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authorJordan K. Hubbard <jkh@FreeBSD.org>1994-12-30 23:33:10 +0000
committerJordan K. Hubbard <jkh@FreeBSD.org>1994-12-30 23:33:10 +0000
commit3c8ea7601ed05f427ea0108e2ec73d04597e1efd (patch)
tree37db35d514c69a356634c1a2cbaecf365cbb68b2 /gnu/usr.bin/gdb/bfd
parent01db5e69c1b8ed8f657fa883a9416c69b2e5425a (diff)
Notes
Diffstat (limited to 'gnu/usr.bin/gdb/bfd')
-rw-r--r--gnu/usr.bin/gdb/bfd/coff-i386.c354
-rw-r--r--gnu/usr.bin/gdb/bfd/coffcode.h2544
-rw-r--r--gnu/usr.bin/gdb/bfd/coffswap.h741
-rw-r--r--gnu/usr.bin/gdb/bfd/ecofflink.c1616
-rw-r--r--gnu/usr.bin/gdb/bfd/elf32-i386.c931
-rw-r--r--gnu/usr.bin/gdb/bfd/elf32-target.h358
-rw-r--r--gnu/usr.bin/gdb/bfd/elf32.c23
-rw-r--r--gnu/usr.bin/gdb/bfd/elfcode.h6351
-rw-r--r--gnu/usr.bin/gdb/bfd/genlink.h106
-rw-r--r--gnu/usr.bin/gdb/bfd/hash.c470
-rw-r--r--gnu/usr.bin/gdb/bfd/i386aout.c68
-rw-r--r--gnu/usr.bin/gdb/bfd/linker.c2442
12 files changed, 16004 insertions, 0 deletions
diff --git a/gnu/usr.bin/gdb/bfd/coff-i386.c b/gnu/usr.bin/gdb/bfd/coff-i386.c
new file mode 100644
index 0000000000000..aaaedca74af8d
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/coff-i386.c
@@ -0,0 +1,354 @@
+/* BFD back-end for Intel 386 COFF files.
+ Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+ Written by Cygnus Support.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "obstack.h"
+#include "coff/i386.h"
+#include "coff/internal.h"
+#include "libcoff.h"
+
+static bfd_reloc_status_type coff_i386_reloc PARAMS ((bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ PTR data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message));
+
+/* The page size is a guess based on ELF. */
+#define COFF_PAGE_SIZE 0x1000
+
+/* For some reason when using i386 COFF the value stored in the .text
+ section for a reference to a common symbol is the value itself plus
+ any desired offset. Ian Taylor, Cygnus Support. */
+
+/* If we are producing relocateable output, we need to do some
+ adjustments to the object file that are not done by the
+ bfd_perform_relocation function. This function is called by every
+ reloc type to make any required adjustments. */
+
+static bfd_reloc_status_type
+coff_i386_reloc (abfd, reloc_entry, symbol, data, input_section, output_bfd,
+ error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ symvalue diff;
+
+ if (output_bfd == (bfd *) NULL)
+ return bfd_reloc_continue;
+
+ if (bfd_is_com_section (symbol->section))
+ {
+ /* We are relocating a common symbol. The current value in the
+ object file is ORIG + OFFSET, where ORIG is the value of the
+ common symbol as seen by the object file when it was compiled
+ (this may be zero if the symbol was undefined) and OFFSET is
+ the offset into the common symbol (normally zero, but may be
+ non-zero when referring to a field in a common structure).
+ ORIG is the negative of reloc_entry->addend, which is set by
+ the CALC_ADDEND macro below. We want to replace the value in
+ the object file with NEW + OFFSET, where NEW is the value of
+ the common symbol which we are going to put in the final
+ object file. NEW is symbol->value. */
+ diff = symbol->value + reloc_entry->addend;
+ }
+ else
+ {
+ /* For some reason bfd_perform_relocation always effectively
+ ignores the addend for a COFF target when producing
+ relocateable output. This seems to be always wrong for 386
+ COFF, so we handle the addend here instead. */
+ diff = reloc_entry->addend;
+ }
+
+#define DOIT(x) \
+ x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
+
+ if (diff != 0)
+ {
+ const reloc_howto_type *howto = reloc_entry->howto;
+ unsigned char *addr = (unsigned char *) data + reloc_entry->address;
+
+ switch (howto->size)
+ {
+ case 0:
+ {
+ char x = bfd_get_8 (abfd, addr);
+ DOIT (x);
+ bfd_put_8 (abfd, x, addr);
+ }
+ break;
+
+ case 1:
+ {
+ short x = bfd_get_16 (abfd, addr);
+ DOIT (x);
+ bfd_put_16 (abfd, x, addr);
+ }
+ break;
+
+ case 2:
+ {
+ long x = bfd_get_32 (abfd, addr);
+ DOIT (x);
+ bfd_put_32 (abfd, x, addr);
+ }
+ break;
+
+ default:
+ abort ();
+ }
+ }
+
+ /* Now let bfd_perform_relocation finish everything up. */
+ return bfd_reloc_continue;
+}
+
+static reloc_howto_type howto_table[] =
+{
+ {0},
+ {1},
+ {2},
+ {3},
+ {4},
+ {5},
+ HOWTO (R_DIR32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_i386_reloc, /* special_function */
+ "dir32", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+ {7},
+ {010},
+ {011},
+ {012},
+ {013},
+ {014},
+ {015},
+ {016},
+ HOWTO (R_RELBYTE, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_i386_reloc, /* special_function */
+ "8", /* name */
+ true, /* partial_inplace */
+ 0x000000ff, /* src_mask */
+ 0x000000ff, /* dst_mask */
+ false), /* pcrel_offset */
+ HOWTO (R_RELWORD, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_i386_reloc, /* special_function */
+ "16", /* name */
+ true, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ false), /* pcrel_offset */
+ HOWTO (R_RELLONG, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_i386_reloc, /* special_function */
+ "32", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+ HOWTO (R_PCRBYTE, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ coff_i386_reloc, /* special_function */
+ "DISP8", /* name */
+ true, /* partial_inplace */
+ 0x000000ff, /* src_mask */
+ 0x000000ff, /* dst_mask */
+ false), /* pcrel_offset */
+ HOWTO (R_PCRWORD, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ coff_i386_reloc, /* special_function */
+ "DISP16", /* name */
+ true, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ false), /* pcrel_offset */
+ HOWTO (R_PCRLONG, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ coff_i386_reloc, /* special_function */
+ "DISP32", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false) /* pcrel_offset */
+};
+
+/* Turn a howto into a reloc nunmber */
+
+#define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
+#define BADMAG(x) I386BADMAG(x)
+#define I386 1 /* Customize coffcode.h */
+
+#define RTYPE2HOWTO(cache_ptr, dst) \
+ cache_ptr->howto = howto_table + (dst)->r_type;
+
+/* On SCO Unix 3.2.2 the native assembler generates two .data
+ sections. We handle that by renaming the second one to .data2. It
+ does no harm to do this for any 386 COFF target. */
+#define TWO_DATA_SECS
+
+/* For 386 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared
+ library. On some other COFF targets STYP_BSS is normally
+ STYP_NOLOAD. */
+#define BSS_NOLOAD_IS_SHARED_LIBRARY
+
+/* Compute the addend of a reloc. If the reloc is to a common symbol,
+ the object file contains the value of the common symbol. By the
+ time this is called, the linker may be using a different symbol
+ from a different object file with a different value. Therefore, we
+ hack wildly to locate the original symbol from this file so that we
+ can make the correct adjustment. This macro sets coffsym to the
+ symbol from the original file, and uses it to set the addend value
+ correctly. If this is not a common symbol, the usual addend
+ calculation is done, except that an additional tweak is needed for
+ PC relative relocs.
+ FIXME: This macro refers to symbols and asect; these are from the
+ calling function, not the macro arguments. */
+
+#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
+ { \
+ coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
+ if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
+ coffsym = (obj_symbols (abfd) \
+ + (cache_ptr->sym_ptr_ptr - symbols)); \
+ else if (ptr) \
+ coffsym = coff_symbol_from (abfd, ptr); \
+ if (coffsym != (coff_symbol_type *) NULL \
+ && coffsym->native->u.syment.n_scnum == 0) \
+ cache_ptr->addend = - coffsym->native->u.syment.n_value; \
+ else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
+ && ptr->section != (asection *) NULL) \
+ cache_ptr->addend = - (ptr->section->vma + ptr->value); \
+ else \
+ cache_ptr->addend = 0; \
+ if (ptr && howto_table[reloc.r_type].pc_relative) \
+ cache_ptr->addend += asect->vma; \
+ }
+
+#include "coffcode.h"
+
+static const bfd_target *
+i3coff_object_p(a)
+ bfd *a;
+{
+ return coff_object_p(a);
+}
+
+const bfd_target
+#ifdef TARGET_SYM
+ TARGET_SYM =
+#else
+ i386coff_vec =
+#endif
+{
+#ifdef TARGET_NAME
+ TARGET_NAME,
+#else
+ "coff-i386", /* name */
+#endif
+ bfd_target_coff_flavour,
+ false, /* data byte order is little */
+ false, /* header byte order is little */
+
+ (HAS_RELOC | EXEC_P | /* object flags */
+ HAS_LINENO | HAS_DEBUG |
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
+
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+ 0, /* leading underscore */
+ '/', /* ar_pad_char */
+ 15, /* ar_max_namelen */
+
+ 2, /* minimum alignment power */
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
+
+/* Note that we allow an object file to be treated as a core file as well. */
+ {_bfd_dummy_target, i3coff_object_p, /* bfd_check_format */
+ bfd_generic_archive_p, i3coff_object_p},
+ {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
+ bfd_false},
+ {bfd_false, coff_write_object_contents, /* bfd_write_contents */
+ _bfd_write_archive_contents, bfd_false},
+
+ BFD_JUMP_TABLE_GENERIC (coff),
+ BFD_JUMP_TABLE_COPY (coff),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+ BFD_JUMP_TABLE_SYMBOLS (coff),
+ BFD_JUMP_TABLE_RELOCS (coff),
+ BFD_JUMP_TABLE_WRITE (coff),
+ BFD_JUMP_TABLE_LINK (coff),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ COFF_SWAP_TABLE,
+};
diff --git a/gnu/usr.bin/gdb/bfd/coffcode.h b/gnu/usr.bin/gdb/bfd/coffcode.h
new file mode 100644
index 0000000000000..206a38192f8ed
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/coffcode.h
@@ -0,0 +1,2544 @@
+/* Support for the generic parts of most COFF variants, for BFD.
+ Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+ Written by Cygnus Support.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/*
+Most of this hacked by Steve Chamberlain,
+ sac@cygnus.com
+*/
+/*
+
+SECTION
+ coff backends
+
+ BFD supports a number of different flavours of coff format.
+ The major differences between formats are the sizes and
+ alignments of fields in structures on disk, and the occasional
+ extra field.
+
+ Coff in all its varieties is implemented with a few common
+ files and a number of implementation specific files. For
+ example, The 88k bcs coff format is implemented in the file
+ @file{coff-m88k.c}. This file @code{#include}s
+ @file{coff/m88k.h} which defines the external structure of the
+ coff format for the 88k, and @file{coff/internal.h} which
+ defines the internal structure. @file{coff-m88k.c} also
+ defines the relocations used by the 88k format
+ @xref{Relocations}.
+
+ The Intel i960 processor version of coff is implemented in
+ @file{coff-i960.c}. This file has the same structure as
+ @file{coff-m88k.c}, except that it includes @file{coff/i960.h}
+ rather than @file{coff-m88k.h}.
+
+SUBSECTION
+ Porting to a new version of coff
+
+ The recommended method is to select from the existing
+ implementations the version of coff which is most like the one
+ you want to use. For example, we'll say that i386 coff is
+ the one you select, and that your coff flavour is called foo.
+ Copy @file{i386coff.c} to @file{foocoff.c}, copy
+ @file{../include/coff/i386.h} to @file{../include/coff/foo.h},
+ and add the lines to @file{targets.c} and @file{Makefile.in}
+ so that your new back end is used. Alter the shapes of the
+ structures in @file{../include/coff/foo.h} so that they match
+ what you need. You will probably also have to add
+ @code{#ifdef}s to the code in @file{coff/internal.h} and
+ @file{coffcode.h} if your version of coff is too wild.
+
+ You can verify that your new BFD backend works quite simply by
+ building @file{objdump} from the @file{binutils} directory,
+ and making sure that its version of what's going on and your
+ host system's idea (assuming it has the pretty standard coff
+ dump utility, usually called @code{att-dump} or just
+ @code{dump}) are the same. Then clean up your code, and send
+ what you've done to Cygnus. Then your stuff will be in the
+ next release, and you won't have to keep integrating it.
+
+SUBSECTION
+ How the coff backend works
+
+SUBSUBSECTION
+ File layout
+
+ The Coff backend is split into generic routines that are
+ applicable to any Coff target and routines that are specific
+ to a particular target. The target-specific routines are
+ further split into ones which are basically the same for all
+ Coff targets except that they use the external symbol format
+ or use different values for certain constants.
+
+ The generic routines are in @file{coffgen.c}. These routines
+ work for any Coff target. They use some hooks into the target
+ specific code; the hooks are in a @code{bfd_coff_backend_data}
+ structure, one of which exists for each target.
+
+ The essentially similar target-specific routines are in
+ @file{coffcode.h}. This header file includes executable C code.
+ The various Coff targets first include the appropriate Coff
+ header file, make any special defines that are needed, and
+ then include @file{coffcode.h}.
+
+ Some of the Coff targets then also have additional routines in
+ the target source file itself.
+
+ For example, @file{coff-i960.c} includes
+ @file{coff/internal.h} and @file{coff/i960.h}. It then
+ defines a few constants, such as @code{I960}, and includes
+ @file{coffcode.h}. Since the i960 has complex relocation
+ types, @file{coff-i960.c} also includes some code to
+ manipulate the i960 relocs. This code is not in
+ @file{coffcode.h} because it would not be used by any other
+ target.
+
+SUBSUBSECTION
+ Bit twiddling
+
+ Each flavour of coff supported in BFD has its own header file
+ describing the external layout of the structures. There is also
+ an internal description of the coff layout, in
+ @file{coff/internal.h}. A major function of the
+ coff backend is swapping the bytes and twiddling the bits to
+ translate the external form of the structures into the normal
+ internal form. This is all performed in the
+ @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
+ elements are different sizes between different versions of
+ coff; it is the duty of the coff version specific include file
+ to override the definitions of various packing routines in
+ @file{coffcode.h}. E.g., the size of line number entry in coff is
+ sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
+ @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
+ correct one. No doubt, some day someone will find a version of
+ coff which has a varying field size not catered to at the
+ moment. To port BFD, that person will have to add more @code{#defines}.
+ Three of the bit twiddling routines are exported to
+ @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
+ and @code{coff_swap_linno_in}. @code{GDB} reads the symbol
+ table on its own, but uses BFD to fix things up. More of the
+ bit twiddlers are exported for @code{gas};
+ @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
+ @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
+ @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
+ @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
+ of all the symbol table and reloc drudgery itself, thereby
+ saving the internal BFD overhead, but uses BFD to swap things
+ on the way out, making cross ports much safer. Doing so also
+ allows BFD (and thus the linker) to use the same header files
+ as @code{gas}, which makes one avenue to disaster disappear.
+
+SUBSUBSECTION
+ Symbol reading
+
+ The simple canonical form for symbols used by BFD is not rich
+ enough to keep all the information available in a coff symbol
+ table. The back end gets around this problem by keeping the original
+ symbol table around, "behind the scenes".
+
+ When a symbol table is requested (through a call to
+ @code{bfd_canonicalize_symtab}), a request gets through to
+ @code{coff_get_normalized_symtab}. This reads the symbol table from
+ the coff file and swaps all the structures inside into the
+ internal form. It also fixes up all the pointers in the table
+ (represented in the file by offsets from the first symbol in
+ the table) into physical pointers to elements in the new
+ internal table. This involves some work since the meanings of
+ fields change depending upon context: a field that is a
+ pointer to another structure in the symbol table at one moment
+ may be the size in bytes of a structure at the next. Another
+ pass is made over the table. All symbols which mark file names
+ (<<C_FILE>> symbols) are modified so that the internal
+ string points to the value in the auxent (the real filename)
+ rather than the normal text associated with the symbol
+ (@code{".file"}).
+
+ At this time the symbol names are moved around. Coff stores
+ all symbols less than nine characters long physically
+ within the symbol table; longer strings are kept at the end of
+ the file in the string table. This pass moves all strings
+ into memory and replaces them with pointers to the strings.
+
+
+ The symbol table is massaged once again, this time to create
+ the canonical table used by the BFD application. Each symbol
+ is inspected in turn, and a decision made (using the
+ @code{sclass} field) about the various flags to set in the
+ @code{asymbol}. @xref{Symbols}. The generated canonical table
+ shares strings with the hidden internal symbol table.
+
+ Any linenumbers are read from the coff file too, and attached
+ to the symbols which own the functions the linenumbers belong to.
+
+SUBSUBSECTION
+ Symbol writing
+
+ Writing a symbol to a coff file which didn't come from a coff
+ file will lose any debugging information. The @code{asymbol}
+ structure remembers the BFD from which the symbol was taken, and on
+ output the back end makes sure that the same destination target as
+ source target is present.
+
+ When the symbols have come from a coff file then all the
+ debugging information is preserved.
+
+ Symbol tables are provided for writing to the back end in a
+ vector of pointers to pointers. This allows applications like
+ the linker to accumulate and output large symbol tables
+ without having to do too much byte copying.
+
+ This function runs through the provided symbol table and
+ patches each symbol marked as a file place holder
+ (@code{C_FILE}) to point to the next file place holder in the
+ list. It also marks each @code{offset} field in the list with
+ the offset from the first symbol of the current symbol.
+
+ Another function of this procedure is to turn the canonical
+ value form of BFD into the form used by coff. Internally, BFD
+ expects symbol values to be offsets from a section base; so a
+ symbol physically at 0x120, but in a section starting at
+ 0x100, would have the value 0x20. Coff expects symbols to
+ contain their final value, so symbols have their values
+ changed at this point to reflect their sum with their owning
+ section. This transformation uses the
+ <<output_section>> field of the @code{asymbol}'s
+ @code{asection} @xref{Sections}.
+
+ o <<coff_mangle_symbols>>
+
+ This routine runs though the provided symbol table and uses
+ the offsets generated by the previous pass and the pointers
+ generated when the symbol table was read in to create the
+ structured hierachy required by coff. It changes each pointer
+ to a symbol into the index into the symbol table of the asymbol.
+
+ o <<coff_write_symbols>>
+
+ This routine runs through the symbol table and patches up the
+ symbols from their internal form into the coff way, calls the
+ bit twiddlers, and writes out the table to the file.
+
+*/
+
+/*
+INTERNAL_DEFINITION
+ coff_symbol_type
+
+DESCRIPTION
+ The hidden information for an <<asymbol>> is described in a
+ <<combined_entry_type>>:
+
+CODE_FRAGMENT
+.
+.typedef struct coff_ptr_struct
+.{
+.
+. {* Remembers the offset from the first symbol in the file for
+. this symbol. Generated by coff_renumber_symbols. *}
+.unsigned int offset;
+.
+. {* Should the value of this symbol be renumbered. Used for
+. XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *}
+.unsigned int fix_value : 1;
+.
+. {* Should the tag field of this symbol be renumbered.
+. Created by coff_pointerize_aux. *}
+.unsigned int fix_tag : 1;
+.
+. {* Should the endidx field of this symbol be renumbered.
+. Created by coff_pointerize_aux. *}
+.unsigned int fix_end : 1;
+.
+. {* Should the x_csect.x_scnlen field be renumbered.
+. Created by coff_slurp_symbol_table. *}
+.unsigned int fix_scnlen : 1;
+.
+. {* The container for the symbol structure as read and translated
+. from the file. *}
+.
+.union {
+. union internal_auxent auxent;
+. struct internal_syment syment;
+. } u;
+.} combined_entry_type;
+.
+.
+.{* Each canonical asymbol really looks like this: *}
+.
+.typedef struct coff_symbol_struct
+.{
+. {* The actual symbol which the rest of BFD works with *}
+.asymbol symbol;
+.
+. {* A pointer to the hidden information for this symbol *}
+.combined_entry_type *native;
+.
+. {* A pointer to the linenumber information for this symbol *}
+.struct lineno_cache_entry *lineno;
+.
+. {* Have the line numbers been relocated yet ? *}
+.boolean done_lineno;
+.} coff_symbol_type;
+
+
+*/
+
+#include "coffswap.h"
+
+/* void warning(); */
+
+/*
+ * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
+ * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
+ * NOTE: If you add to/change this routine, you should mirror the changes
+ * in styp_to_sec_flags().
+ */
+static long
+sec_to_styp_flags (sec_name, sec_flags)
+ CONST char *sec_name;
+ flagword sec_flags;
+{
+ long styp_flags = 0;
+
+ if (!strcmp (sec_name, _TEXT))
+ {
+ styp_flags = STYP_TEXT;
+ }
+ else if (!strcmp (sec_name, _DATA))
+ {
+ styp_flags = STYP_DATA;
+#ifdef TWO_DATA_SECS
+ }
+ else if (!strcmp (sec_name, ".data2"))
+ {
+ styp_flags = STYP_DATA;
+#endif /* TWO_DATA_SECS */
+ }
+ else if (!strcmp (sec_name, _BSS))
+ {
+ styp_flags = STYP_BSS;
+#ifdef _COMMENT
+ }
+ else if (!strcmp (sec_name, _COMMENT))
+ {
+ styp_flags = STYP_INFO;
+#endif /* _COMMENT */
+#ifdef _LIB
+ }
+ else if (!strcmp (sec_name, _LIB))
+ {
+ styp_flags = STYP_LIB;
+#endif /* _LIB */
+#ifdef _LIT
+ }
+ else if (!strcmp (sec_name, _LIT))
+ {
+ styp_flags = STYP_LIT;
+#endif /* _LIT */
+ }
+ else if (!strcmp (sec_name, ".debug"))
+ {
+#ifdef STYP_DEBUG
+ styp_flags = STYP_DEBUG;
+#else
+ styp_flags = STYP_INFO;
+#endif
+ }
+ else if (!strcmp (sec_name, ".stab")
+ || !strncmp (sec_name, ".stabstr", 8))
+ {
+ styp_flags = STYP_INFO;
+ }
+ /* Try and figure out what it should be */
+ else if (sec_flags & SEC_CODE)
+ {
+ styp_flags = STYP_TEXT;
+ }
+ else if (sec_flags & SEC_DATA)
+ {
+ styp_flags = STYP_DATA;
+ }
+ else if (sec_flags & SEC_READONLY)
+ {
+#ifdef STYP_LIT /* 29k readonly text/data section */
+ styp_flags = STYP_LIT;
+#else
+ styp_flags = STYP_TEXT;
+#endif /* STYP_LIT */
+ }
+ else if (sec_flags & SEC_LOAD)
+ {
+ styp_flags = STYP_TEXT;
+ }
+ else if (sec_flags & SEC_ALLOC)
+ {
+ styp_flags = STYP_BSS;
+ }
+
+#ifdef STYP_NOLOAD
+ if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0)
+ styp_flags |= STYP_NOLOAD;
+#endif
+
+ return (styp_flags);
+}
+/*
+ * Return a word with SEC_* flags set to represent the incoming
+ * STYP_* flags (from scnhdr.s_flags). The inverse of this
+ * function is sec_to_styp_flags().
+ * NOTE: If you add to/change this routine, you should mirror the changes
+ * in sec_to_styp_flags().
+ */
+static flagword
+styp_to_sec_flags (abfd, hdr)
+ bfd * abfd;
+ PTR hdr;
+{
+ struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr;
+ long styp_flags = internal_s->s_flags;
+ flagword sec_flags = 0;
+
+#ifdef STYP_NOLOAD
+ if (styp_flags & STYP_NOLOAD)
+ {
+ sec_flags |= SEC_NEVER_LOAD;
+ }
+#endif /* STYP_NOLOAD */
+
+ /* For 386 COFF, at least, an unloadable text or data section is
+ actually a shared library section. */
+ if (styp_flags & STYP_TEXT)
+ {
+ if (sec_flags & SEC_NEVER_LOAD)
+ sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY;
+ else
+ sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC;
+ }
+ else if (styp_flags & STYP_DATA)
+ {
+ if (sec_flags & SEC_NEVER_LOAD)
+ sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY;
+ else
+ sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC;
+ }
+ else if (styp_flags & STYP_BSS)
+ {
+#ifdef BSS_NOLOAD_IS_SHARED_LIBRARY
+ if (sec_flags & SEC_NEVER_LOAD)
+ sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY;
+ else
+#endif
+ sec_flags |= SEC_ALLOC;
+ }
+ else if (styp_flags & STYP_INFO)
+ {
+ /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is
+ defined. coff_compute_section_file_positions uses
+ COFF_PAGE_SIZE to ensure that the low order bits of the
+ section VMA and the file offset match. If we don't know
+ COFF_PAGE_SIZE, we can't ensure the correct correspondence,
+ and demand page loading of the file will fail. */
+#ifdef COFF_PAGE_SIZE
+ sec_flags |= SEC_DEBUGGING;
+#endif
+ }
+ else
+ {
+ sec_flags |= SEC_ALLOC | SEC_LOAD;
+ }
+
+#ifdef STYP_LIT /* A29k readonly text/data section type */
+ if ((styp_flags & STYP_LIT) == STYP_LIT)
+ {
+ sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
+ }
+#endif /* STYP_LIT */
+#ifdef STYP_OTHER_LOAD /* Other loaded sections */
+ if (styp_flags & STYP_OTHER_LOAD)
+ {
+ sec_flags = (SEC_LOAD | SEC_ALLOC);
+ }
+#endif /* STYP_SDATA */
+
+ return (sec_flags);
+}
+
+#define get_index(symbol) ((long) (symbol)->udata)
+
+/*
+INTERNAL_DEFINITION
+ bfd_coff_backend_data
+
+CODE_FRAGMENT
+
+Special entry points for gdb to swap in coff symbol table parts:
+.typedef struct
+.{
+. void (*_bfd_coff_swap_aux_in) PARAMS ((
+. bfd *abfd,
+. PTR ext,
+. int type,
+. int class,
+. int indaux,
+. int numaux,
+. PTR in));
+.
+. void (*_bfd_coff_swap_sym_in) PARAMS ((
+. bfd *abfd ,
+. PTR ext,
+. PTR in));
+.
+. void (*_bfd_coff_swap_lineno_in) PARAMS ((
+. bfd *abfd,
+. PTR ext,
+. PTR in));
+.
+
+Special entry points for gas to swap out coff parts:
+
+. unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
+. bfd *abfd,
+. PTR in,
+. int type,
+. int class,
+. int indaux,
+. int numaux,
+. PTR ext));
+.
+. unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
+. bfd *abfd,
+. PTR in,
+. PTR ext));
+.
+. unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
+. bfd *abfd,
+. PTR in,
+. PTR ext));
+.
+. unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
+. bfd *abfd,
+. PTR src,
+. PTR dst));
+.
+. unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
+. bfd *abfd,
+. PTR in,
+. PTR out));
+.
+. unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
+. bfd *abfd,
+. PTR in,
+. PTR out));
+.
+. unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
+. bfd *abfd,
+. PTR in,
+. PTR out));
+.
+
+Special entry points for generic COFF routines to call target
+dependent COFF routines:
+
+. unsigned int _bfd_filhsz;
+. unsigned int _bfd_aoutsz;
+. unsigned int _bfd_scnhsz;
+. unsigned int _bfd_symesz;
+. unsigned int _bfd_auxesz;
+. unsigned int _bfd_linesz;
+. boolean _bfd_coff_long_filenames;
+. void (*_bfd_coff_swap_filehdr_in) PARAMS ((
+. bfd *abfd,
+. PTR ext,
+. PTR in));
+. void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
+. bfd *abfd,
+. PTR ext,
+. PTR in));
+. void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
+. bfd *abfd,
+. PTR ext,
+. PTR in));
+. boolean (*_bfd_coff_bad_format_hook) PARAMS ((
+. bfd *abfd,
+. PTR internal_filehdr));
+. boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
+. bfd *abfd,
+. PTR internal_filehdr));
+. PTR (*_bfd_coff_mkobject_hook) PARAMS ((
+. bfd *abfd,
+. PTR internal_filehdr,
+. PTR internal_aouthdr));
+. flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
+. bfd *abfd,
+. PTR internal_scnhdr));
+. asection *(*_bfd_make_section_hook) PARAMS ((
+. bfd *abfd,
+. char *name));
+. void (*_bfd_set_alignment_hook) PARAMS ((
+. bfd *abfd,
+. asection *sec,
+. PTR internal_scnhdr));
+. boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
+. bfd *abfd));
+. boolean (*_bfd_coff_symname_in_debug) PARAMS ((
+. bfd *abfd,
+. struct internal_syment *sym));
+. void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
+. bfd *abfd,
+. struct bfd_link_info *link_info,
+. struct bfd_link_order *link_order,
+. arelent *reloc,
+. bfd_byte *data,
+. unsigned int *src_ptr,
+. unsigned int *dst_ptr));
+. int (*_bfd_coff_reloc16_estimate) PARAMS ((
+. bfd *abfd,
+. asection *input_section,
+. arelent *r,
+. unsigned int shrink,
+. struct bfd_link_info *link_info));
+.
+.} bfd_coff_backend_data;
+.
+.#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
+.
+.#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
+. ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
+.
+.#define bfd_coff_swap_sym_in(a,e,i) \
+. ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
+.
+.#define bfd_coff_swap_lineno_in(a,e,i) \
+. ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
+.
+.#define bfd_coff_swap_reloc_out(abfd, i, o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
+.
+.#define bfd_coff_swap_lineno_out(abfd, i, o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
+.
+.#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
+. ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
+.
+.#define bfd_coff_swap_sym_out(abfd, i,o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
+.
+.#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
+.
+.#define bfd_coff_swap_filehdr_out(abfd, i,o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
+.
+.#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
+.
+.#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
+.#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
+.#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
+.#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
+.#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
+.#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
+.#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
+.#define bfd_coff_swap_filehdr_in(abfd, i,o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
+.
+.#define bfd_coff_swap_aouthdr_in(abfd, i,o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
+.
+.#define bfd_coff_swap_scnhdr_in(abfd, i,o) \
+. ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
+.
+.#define bfd_coff_bad_format_hook(abfd, filehdr) \
+. ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
+.
+.#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
+. ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
+.#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
+. ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr))
+.
+.#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr)\
+. ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr))
+.
+.#define bfd_coff_make_section_hook(abfd, name)\
+. ((coff_backend_info (abfd)->_bfd_make_section_hook) (abfd, name))
+.
+.#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
+. ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
+.
+.#define bfd_coff_slurp_symbol_table(abfd)\
+. ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
+.
+.#define bfd_coff_symname_in_debug(abfd, sym)\
+. ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
+.
+.#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\
+. ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
+. (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
+.
+.#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
+. ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
+. (abfd, section, reloc, shrink, link_info))
+.
+*/
+
+/* See whether the magic number matches. */
+
+static boolean
+coff_bad_format_hook (abfd, filehdr)
+ bfd * abfd;
+ PTR filehdr;
+{
+ struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
+
+ if (BADMAG (*internal_f))
+ return false;
+
+ /* if the optional header is NULL or not the correct size then
+ quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
+ and Intel 960 readwrite headers (I960WRMAGIC) is that the
+ optional header is of a different size.
+
+ But the mips keeps extra stuff in it's opthdr, so dont check
+ when doing that
+ */
+
+#if defined(M88) || defined(I960)
+ if (internal_f->f_opthdr != 0 && AOUTSZ != internal_f->f_opthdr)
+ return false;
+#endif
+
+ return true;
+}
+
+static asection *
+coff_make_section_hook (abfd, name)
+ bfd * abfd;
+ char *name;
+{
+#ifdef TWO_DATA_SECS
+ /* FIXME: This predates the call to bfd_make_section_anyway
+ in make_a_section_from_file, and can probably go away. */
+ /* On SCO a file created by the Microsoft assembler can have two
+ .data sections. We use .data2 for the second one. */
+ if (strcmp (name, _DATA) == 0)
+ return bfd_make_section (abfd, ".data2");
+#endif
+ return (asection *) NULL;
+}
+
+/*
+ initialize a section structure with information peculiar to this
+ particular implementation of coff
+*/
+
+static boolean
+coff_new_section_hook (abfd, section)
+ bfd * abfd;
+ asection * section;
+{
+ section->alignment_power = abfd->xvec->align_power_min;
+ /* Allocate aux records for section symbols, to store size and
+ related info.
+
+ @@ Shouldn't use constant multiplier here! */
+ coffsymbol (section->symbol)->native =
+ (combined_entry_type *) bfd_zalloc (abfd,
+ sizeof (combined_entry_type) * 10);
+
+#ifdef COFF_SPARC
+ /* This is to allow double-word operations on addresses in data or bss. */
+ if (strcmp (section->name, ".data") == 0
+ || strcmp (section->name, ".bss") == 0)
+ section->alignment_power = 3;
+#endif /* COFF_SPARC */
+
+ return true;
+}
+
+
+#ifdef I960
+
+/* Set the alignment of a BFD section. */
+
+static void
+coff_set_alignment_hook (abfd, section, scnhdr)
+ bfd * abfd;
+ asection * section;
+ PTR scnhdr;
+{
+ struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
+ unsigned int i;
+
+ for (i = 0; i < 32; i++)
+ if ((1 << i) >= hdr->s_align)
+ break;
+ section->alignment_power = i;
+}
+
+#else /* ! I960 */
+
+#define coff_set_alignment_hook \
+ ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void)
+
+#endif /* ! I960 */
+
+static boolean
+coff_mkobject (abfd)
+ bfd * abfd;
+{
+ coff_data_type *coff;
+
+ abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, sizeof (coff_data_type));
+ if (abfd->tdata.coff_obj_data == 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ coff = coff_data (abfd);
+ coff->symbols = (coff_symbol_type *) NULL;
+ coff->conversion_table = (unsigned int *) NULL;
+ coff->raw_syments = (struct coff_ptr_struct *) NULL;
+ coff->raw_linenos = (struct lineno *) NULL;
+ coff->relocbase = 0;
+/* make_abs_section(abfd);*/
+ return true;
+}
+
+/* Create the COFF backend specific information. */
+
+static PTR
+coff_mkobject_hook (abfd, filehdr, aouthdr)
+ bfd * abfd;
+ PTR filehdr;
+ PTR aouthdr;
+{
+ struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
+ coff_data_type *coff;
+
+ if (coff_mkobject (abfd) == false)
+ return NULL;
+
+ coff = coff_data (abfd);
+
+ coff->sym_filepos = internal_f->f_symptr;
+ coff->flags = internal_f->f_flags;
+
+ /* These members communicate important constants about the symbol
+ table to GDB's symbol-reading code. These `constants'
+ unfortunately vary among coff implementations... */
+ coff->local_n_btmask = N_BTMASK;
+ coff->local_n_btshft = N_BTSHFT;
+ coff->local_n_tmask = N_TMASK;
+ coff->local_n_tshift = N_TSHIFT;
+ coff->local_symesz = SYMESZ;
+ coff->local_auxesz = AUXESZ;
+ coff->local_linesz = LINESZ;
+
+ return (PTR) coff;
+}
+
+/* Determine the machine architecture and type. FIXME: This is target
+ dependent because the magic numbers are defined in the target
+ dependent header files. But there is no particular need for this.
+ If the magic numbers were moved to a separate file, this function
+ would be target independent and would also be much more successful
+ at linking together COFF files for different architectures. */
+
+static boolean
+coff_set_arch_mach_hook (abfd, filehdr)
+ bfd *abfd;
+ PTR filehdr;
+{
+ long machine;
+ enum bfd_architecture arch;
+ struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
+
+ machine = 0;
+ switch (internal_f->f_magic)
+ {
+#ifdef I386MAGIC
+ case I386MAGIC:
+ case I386PTXMAGIC:
+ case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */
+ case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */
+ arch = bfd_arch_i386;
+ machine = 0;
+ break;
+#endif
+
+#ifdef A29K_MAGIC_BIG
+ case A29K_MAGIC_BIG:
+ case A29K_MAGIC_LITTLE:
+ arch = bfd_arch_a29k;
+ machine = 0;
+ break;
+#endif
+
+#ifdef MC68MAGIC
+ case MC68MAGIC:
+ case M68MAGIC:
+#ifdef MC68KBCSMAGIC
+ case MC68KBCSMAGIC:
+#endif
+#ifdef APOLLOM68KMAGIC
+ case APOLLOM68KMAGIC:
+#endif
+#ifdef LYNXCOFFMAGIC
+ case LYNXCOFFMAGIC:
+#endif
+ arch = bfd_arch_m68k;
+ machine = 68020;
+ break;
+#endif
+#ifdef MC88MAGIC
+ case MC88MAGIC:
+ case MC88DMAGIC:
+ case MC88OMAGIC:
+ arch = bfd_arch_m88k;
+ machine = 88100;
+ break;
+#endif
+#ifdef Z8KMAGIC
+ case Z8KMAGIC:
+ arch = bfd_arch_z8k;
+ switch (internal_f->f_flags & F_MACHMASK)
+ {
+ case F_Z8001:
+ machine = bfd_mach_z8001;
+ break;
+ case F_Z8002:
+ machine = bfd_mach_z8002;
+ break;
+ default:
+ return false;
+ }
+ break;
+#endif
+#ifdef I960
+#ifdef I960ROMAGIC
+ case I960ROMAGIC:
+ case I960RWMAGIC:
+ arch = bfd_arch_i960;
+ switch (F_I960TYPE & internal_f->f_flags)
+ {
+ default:
+ case F_I960CORE:
+ machine = bfd_mach_i960_core;
+ break;
+ case F_I960KB:
+ machine = bfd_mach_i960_kb_sb;
+ break;
+ case F_I960MC:
+ machine = bfd_mach_i960_mc;
+ break;
+ case F_I960XA:
+ machine = bfd_mach_i960_xa;
+ break;
+ case F_I960CA:
+ machine = bfd_mach_i960_ca;
+ break;
+ case F_I960KA:
+ machine = bfd_mach_i960_ka_sa;
+ break;
+ }
+ break;
+#endif
+#endif
+
+#ifdef U802ROMAGIC
+ case U802ROMAGIC:
+ case U802WRMAGIC:
+ case U802TOCMAGIC:
+ arch = bfd_arch_rs6000;
+ machine = 6000;
+ break;
+#endif
+
+#ifdef WE32KMAGIC
+ case WE32KMAGIC:
+ arch = bfd_arch_we32k;
+ machine = 0;
+ break;
+#endif
+
+#ifdef H8300MAGIC
+ case H8300MAGIC:
+ arch = bfd_arch_h8300;
+ machine = bfd_mach_h8300;
+ /* !! FIXME this probably isn't the right place for this */
+ abfd->flags |= BFD_IS_RELAXABLE;
+ break;
+#endif
+
+#ifdef H8300HMAGIC
+ case H8300HMAGIC:
+ arch = bfd_arch_h8300;
+ machine = bfd_mach_h8300h;
+ /* !! FIXME this probably isn't the right place for this */
+ abfd->flags |= BFD_IS_RELAXABLE;
+ break;
+#endif
+
+#ifdef SH_ARCH_MAGIC
+ case SH_ARCH_MAGIC:
+ arch = bfd_arch_sh;
+ machine = 0;
+ break;
+#endif
+
+#ifdef H8500MAGIC
+ case H8500MAGIC:
+ arch = bfd_arch_h8500;
+ machine = 0;
+ break;
+#endif
+
+#ifdef SPARCMAGIC
+ case SPARCMAGIC:
+#ifdef LYNXCOFFMAGIC
+ case LYNXCOFFMAGIC:
+#endif
+ arch = bfd_arch_sparc;
+ machine = 0;
+ break;
+#endif
+
+ default: /* Unreadable input file type */
+ arch = bfd_arch_obscure;
+ break;
+ }
+
+ bfd_default_set_arch_mach (abfd, arch, machine);
+ return true;
+}
+
+#ifdef SYMNAME_IN_DEBUG
+
+static boolean
+symname_in_debug_hook (abfd, sym)
+ bfd * abfd;
+ struct internal_syment *sym;
+{
+ return SYMNAME_IN_DEBUG (sym) ? true : false;
+}
+
+#else
+
+#define symname_in_debug_hook \
+ (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false
+
+#endif
+
+/*
+SUBSUBSECTION
+ Writing relocations
+
+ To write relocations, the back end steps though the
+ canonical relocation table and create an
+ @code{internal_reloc}. The symbol index to use is removed from
+ the @code{offset} field in the symbol table supplied. The
+ address comes directly from the sum of the section base
+ address and the relocation offset; the type is dug directly
+ from the howto field. Then the @code{internal_reloc} is
+ swapped into the shape of an @code{external_reloc} and written
+ out to disk.
+
+*/
+
+static boolean
+coff_write_relocs (abfd)
+ bfd * abfd;
+{
+ asection *s;
+ for (s = abfd->sections; s != (asection *) NULL; s = s->next)
+ {
+ unsigned int i;
+ struct external_reloc dst;
+
+ arelent **p = s->orelocation;
+ if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
+ return false;
+ for (i = 0; i < s->reloc_count; i++)
+ {
+ struct internal_reloc n;
+ arelent *q = p[i];
+ memset ((PTR) & n, 0, sizeof (n));
+
+ n.r_vaddr = q->address + s->vma;
+
+#ifdef R_IHCONST
+ /* The 29k const/consth reloc pair is a real kludge. The consth
+ part doesn't have a symbol; it has an offset. So rebuilt
+ that here. */
+ if (q->howto->type == R_IHCONST)
+ n.r_symndx = q->addend;
+ else
+#endif
+ if (q->sym_ptr_ptr)
+ {
+ if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr)
+ /* This is a relocation relative to the absolute symbol. */
+ n.r_symndx = -1;
+ else
+ {
+ n.r_symndx = get_index ((*(q->sym_ptr_ptr)));
+ /* Take notice if the symbol reloc points to a symbol
+ we don't have in our symbol table. What should we
+ do for this?? */
+ if (n.r_symndx > obj_conv_table_size (abfd))
+ abort ();
+ }
+ }
+
+#ifdef SWAP_OUT_RELOC_OFFSET
+ n.r_offset = q->addend;
+#endif
+
+#ifdef SELECT_RELOC
+ /* Work out reloc type from what is required */
+ SELECT_RELOC (n, q->howto);
+#else
+ n.r_type = q->howto->type;
+#endif
+ coff_swap_reloc_out (abfd, &n, &dst);
+ if (bfd_write ((PTR) & dst, 1, RELSZ, abfd) != RELSZ)
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/* Set flags and magic number of a coff file from architecture and machine
+ type. Result is true if we can represent the arch&type, false if not. */
+
+static boolean
+coff_set_flags (abfd, magicp, flagsp)
+ bfd * abfd;
+ unsigned *magicp;
+ unsigned short *flagsp;
+{
+ switch (bfd_get_arch (abfd))
+ {
+#ifdef Z8KMAGIC
+ case bfd_arch_z8k:
+ *magicp = Z8KMAGIC;
+ switch (bfd_get_mach (abfd))
+ {
+ case bfd_mach_z8001:
+ *flagsp = F_Z8001;
+ break;
+ case bfd_mach_z8002:
+ *flagsp = F_Z8002;
+ break;
+ default:
+ return false;
+ }
+ return true;
+#endif
+#ifdef I960ROMAGIC
+
+ case bfd_arch_i960:
+
+ {
+ unsigned flags;
+ *magicp = I960ROMAGIC;
+ /*
+ ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
+ I960RWMAGIC); FIXME???
+ */
+ switch (bfd_get_mach (abfd))
+ {
+ case bfd_mach_i960_core:
+ flags = F_I960CORE;
+ break;
+ case bfd_mach_i960_kb_sb:
+ flags = F_I960KB;
+ break;
+ case bfd_mach_i960_mc:
+ flags = F_I960MC;
+ break;
+ case bfd_mach_i960_xa:
+ flags = F_I960XA;
+ break;
+ case bfd_mach_i960_ca:
+ flags = F_I960CA;
+ break;
+ case bfd_mach_i960_ka_sa:
+ flags = F_I960KA;
+ break;
+ default:
+ return false;
+ }
+ *flagsp = flags;
+ return true;
+ }
+ break;
+#endif
+#ifdef I386MAGIC
+ case bfd_arch_i386:
+ *magicp = I386MAGIC;
+#ifdef LYNXOS
+ /* Just overwrite the usual value if we're doing Lynx. */
+ *magicp = LYNXCOFFMAGIC;
+#endif
+ return true;
+ break;
+#endif
+#ifdef MC68MAGIC
+ case bfd_arch_m68k:
+#ifdef APOLLOM68KMAGIC
+ *magicp = APOLLO_COFF_VERSION_NUMBER;
+#else
+ *magicp = MC68MAGIC;
+#endif
+#ifdef LYNXOS
+ /* Just overwrite the usual value if we're doing Lynx. */
+ *magicp = LYNXCOFFMAGIC;
+#endif
+ return true;
+ break;
+#endif
+
+#ifdef MC88MAGIC
+ case bfd_arch_m88k:
+ *magicp = MC88OMAGIC;
+ return true;
+ break;
+#endif
+#ifdef H8300MAGIC
+ case bfd_arch_h8300:
+ switch (bfd_get_mach (abfd))
+ {
+ case bfd_mach_h8300:
+ *magicp = H8300MAGIC;
+ return true;
+ case bfd_mach_h8300h:
+ *magicp = H8300HMAGIC;
+ return true;
+ }
+ break;
+#endif
+
+#ifdef SH_ARCH_MAGIC
+ case bfd_arch_sh:
+ *magicp = SH_ARCH_MAGIC;
+ return true;
+ break;
+#endif
+
+#ifdef SPARCMAGIC
+ case bfd_arch_sparc:
+ *magicp = SPARCMAGIC;
+#ifdef LYNXOS
+ /* Just overwrite the usual value if we're doing Lynx. */
+ *magicp = LYNXCOFFMAGIC;
+#endif
+ return true;
+ break;
+#endif
+
+#ifdef H8500MAGIC
+ case bfd_arch_h8500:
+ *magicp = H8500MAGIC;
+ return true;
+ break;
+#endif
+#ifdef A29K_MAGIC_BIG
+ case bfd_arch_a29k:
+ if (abfd->xvec->byteorder_big_p)
+ *magicp = A29K_MAGIC_BIG;
+ else
+ *magicp = A29K_MAGIC_LITTLE;
+ return true;
+ break;
+#endif
+
+#ifdef WE32KMAGIC
+ case bfd_arch_we32k:
+ *magicp = WE32KMAGIC;
+ return true;
+ break;
+#endif
+
+#ifdef U802TOCMAGIC
+ case bfd_arch_rs6000:
+ case bfd_arch_powerpc:
+ *magicp = U802TOCMAGIC;
+ return true;
+ break;
+#endif
+
+ default: /* Unknown architecture */
+ /* return false; -- fall through to "return false" below, to avoid
+ "statement never reached" errors on the one below. */
+ break;
+ }
+
+ return false;
+}
+
+
+static boolean
+coff_set_arch_mach (abfd, arch, machine)
+ bfd * abfd;
+ enum bfd_architecture arch;
+ unsigned long machine;
+{
+ unsigned dummy1;
+ unsigned short dummy2;
+
+ if (! bfd_default_set_arch_mach (abfd, arch, machine))
+ return false;
+
+ if (arch != bfd_arch_unknown &&
+ coff_set_flags (abfd, &dummy1, &dummy2) != true)
+ return false; /* We can't represent this type */
+
+ return true; /* We're easy ... */
+}
+
+
+/* Calculate the file position for each section. */
+
+static void
+coff_compute_section_file_positions (abfd)
+ bfd * abfd;
+{
+ asection *current;
+ asection *previous = (asection *) NULL;
+ file_ptr sofar = FILHSZ;
+#ifndef I960
+ file_ptr old_sofar;
+#endif
+ if (bfd_get_start_address (abfd))
+ {
+ /* A start address may have been added to the original file. In this
+ case it will need an optional header to record it. */
+ abfd->flags |= EXEC_P;
+ }
+
+ if (abfd->flags & EXEC_P)
+ sofar += AOUTSZ;
+
+ sofar += abfd->section_count * SCNHSZ;
+ for (current = abfd->sections;
+ current != (asection *) NULL;
+ current = current->next)
+ {
+
+ /* Only deal with sections which have contents */
+ if (!(current->flags & SEC_HAS_CONTENTS))
+ continue;
+
+ /* Align the sections in the file to the same boundary on
+ which they are aligned in virtual memory. I960 doesn't
+ do this (FIXME) so we can stay in sync with Intel. 960
+ doesn't yet page from files... */
+#ifndef I960
+ {
+ /* make sure this section is aligned on the right boundary - by
+ padding the previous section up if necessary */
+
+ old_sofar = sofar;
+ sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
+ if (previous != (asection *) NULL)
+ {
+ previous->_raw_size += sofar - old_sofar;
+ }
+ }
+
+#endif
+
+#ifdef COFF_PAGE_SIZE
+ /* In demand paged files the low order bits of the file offset
+ must match the low order bits of the virtual address. */
+ if ((abfd->flags & D_PAGED) != 0)
+ sofar += (current->vma - sofar) % COFF_PAGE_SIZE;
+#endif
+
+ current->filepos = sofar;
+
+ sofar += current->_raw_size;
+#ifndef I960
+ /* make sure that this section is of the right size too */
+ old_sofar = sofar;
+ sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
+ current->_raw_size += sofar - old_sofar;
+#endif
+
+#ifdef _LIB
+ /* Force .lib sections to start at zero. The vma is then
+ incremented in coff_set_section_contents. This is right for
+ SVR3.2. */
+ if (strcmp (current->name, _LIB) == 0)
+ bfd_set_section_vma (abfd, current, 0);
+#endif
+
+ previous = current;
+ }
+ obj_relocbase (abfd) = sofar;
+}
+
+#ifndef RS6000COFF_C
+
+/* If .file, .text, .data, .bss symbols are missing, add them. */
+/* @@ Should we only be adding missing symbols, or overriding the aux
+ values for existing section symbols? */
+static boolean
+coff_add_missing_symbols (abfd)
+ bfd *abfd;
+{
+ unsigned int nsyms = bfd_get_symcount (abfd);
+ asymbol **sympp = abfd->outsymbols;
+ asymbol **sympp2;
+ unsigned int i;
+ int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
+
+ for (i = 0; i < nsyms; i++)
+ {
+ coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
+ CONST char *name;
+ if (csym)
+ {
+ /* only do this if there is a coff representation of the input
+ symbol */
+ if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
+ {
+ need_file = 0;
+ continue;
+ }
+ name = csym->symbol.name;
+ if (!name)
+ continue;
+ if (!strcmp (name, _TEXT))
+ need_text = 0;
+#ifdef APOLLO_M68
+ else if (!strcmp (name, ".wtext"))
+ need_text = 0;
+#endif
+ else if (!strcmp (name, _DATA))
+ need_data = 0;
+ else if (!strcmp (name, _BSS))
+ need_bss = 0;
+ }
+ }
+ /* Now i == bfd_get_symcount (abfd). */
+ /* @@ For now, don't deal with .file symbol. */
+ need_file = 0;
+
+ if (!need_text && !need_data && !need_bss && !need_file)
+ return true;
+ nsyms += need_text + need_data + need_bss + need_file;
+ sympp2 = (asymbol **) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *));
+ if (!sympp2)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ memcpy (sympp2, sympp, i * sizeof (asymbol *));
+ if (need_file)
+ {
+ /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
+ abort ();
+ }
+ if (need_text)
+ sympp2[i++] = coff_section_symbol (abfd, _TEXT);
+ if (need_data)
+ sympp2[i++] = coff_section_symbol (abfd, _DATA);
+ if (need_bss)
+ sympp2[i++] = coff_section_symbol (abfd, _BSS);
+ BFD_ASSERT (i == nsyms);
+ bfd_set_symtab (abfd, sympp2, nsyms);
+ return true;
+}
+
+#endif /* ! defined (RS6000COFF_C) */
+
+/* SUPPRESS 558 */
+/* SUPPRESS 529 */
+static boolean
+coff_write_object_contents (abfd)
+ bfd * abfd;
+{
+ asection *current;
+ unsigned int count;
+
+ boolean hasrelocs = false;
+ boolean haslinno = false;
+ file_ptr reloc_base;
+ file_ptr lineno_base;
+ file_ptr sym_base;
+ file_ptr scn_base;
+ file_ptr data_base;
+ unsigned long reloc_size = 0;
+ unsigned long lnno_size = 0;
+ asection *text_sec = NULL;
+ asection *data_sec = NULL;
+ asection *bss_sec = NULL;
+
+ struct internal_filehdr internal_f;
+ struct internal_aouthdr internal_a;
+
+
+ bfd_set_error (bfd_error_system_call);
+ /* Number the output sections, starting from one on the first section
+ with a name which doesn't start with a *.
+ @@ The code doesn't make this check. Is it supposed to be done,
+ or isn't it?? */
+ count = 1;
+ for (current = abfd->sections; current != (asection *) NULL;
+ current = current->next)
+ {
+ current->target_index = count;
+ count++;
+ }
+
+ if (abfd->output_has_begun == false)
+ {
+ coff_compute_section_file_positions (abfd);
+ }
+
+ if (abfd->sections != (asection *) NULL)
+ {
+ scn_base = abfd->sections->filepos;
+ }
+ else
+ {
+ scn_base = 0;
+ }
+ if (bfd_seek (abfd, scn_base, SEEK_SET) != 0)
+ return false;
+ reloc_base = obj_relocbase (abfd);
+
+ /* Make a pass through the symbol table to count line number entries and
+ put them into the correct asections */
+
+ lnno_size = coff_count_linenumbers (abfd) * LINESZ;
+ data_base = scn_base;
+
+ /* Work out the size of the reloc and linno areas */
+
+ for (current = abfd->sections; current != NULL; current =
+ current->next)
+ {
+ /* We give section headers to +ve indexes */
+ if (current->target_index > 0)
+ {
+
+ reloc_size += current->reloc_count * RELSZ;
+ data_base += SCNHSZ;
+ }
+
+ }
+
+ lineno_base = reloc_base + reloc_size;
+ sym_base = lineno_base + lnno_size;
+
+ /* Indicate in each section->line_filepos its actual file address */
+ for (current = abfd->sections; current != NULL; current =
+ current->next)
+ {
+ if (current->target_index > 0)
+ {
+
+ if (current->lineno_count)
+ {
+ current->line_filepos = lineno_base;
+ current->moving_line_filepos = lineno_base;
+ lineno_base += current->lineno_count * LINESZ;
+ }
+ else
+ {
+ current->line_filepos = 0;
+ }
+ if (current->reloc_count)
+ {
+ current->rel_filepos = reloc_base;
+ reloc_base += current->reloc_count * RELSZ;
+ }
+ else
+ {
+ current->rel_filepos = 0;
+ }
+ }
+ }
+
+
+
+ /* Write section headers to the file. */
+ internal_f.f_nscns = 0;
+ if (bfd_seek (abfd,
+ (file_ptr) ((abfd->flags & EXEC_P) ?
+ (FILHSZ + AOUTSZ) : FILHSZ),
+ SEEK_SET)
+ != 0)
+ return false;
+
+ {
+#if 0
+ unsigned int pad = abfd->flags & D_PAGED ? data_base : 0;
+#endif
+ unsigned int pad = 0;
+
+ for (current = abfd->sections;
+ current != NULL;
+ current = current->next)
+ {
+ struct internal_scnhdr section;
+ if (current->target_index > 0)
+ {
+ internal_f.f_nscns++;
+ strncpy (&(section.s_name[0]), current->name, 8);
+#ifdef _LIB
+ /* Always set s_vaddr of .lib to 0. This is right for SVR3.2
+ Ian Taylor <ian@cygnus.com>. */
+ if (strcmp (current->name, _LIB) == 0)
+ section.s_vaddr = 0;
+ else
+#endif
+ section.s_vaddr = current->lma + pad;
+ section.s_paddr = current->lma + pad;
+ section.s_size = current->_raw_size - pad;
+ /*
+ If this section has no size or is unloadable then the scnptr
+ will be 0 too
+ */
+ if (current->_raw_size - pad == 0 ||
+ (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
+ {
+ section.s_scnptr = 0;
+ }
+ else
+ {
+ section.s_scnptr = current->filepos;
+ }
+ section.s_relptr = current->rel_filepos;
+ section.s_lnnoptr = current->line_filepos;
+ section.s_nreloc = current->reloc_count;
+ section.s_nlnno = current->lineno_count;
+ if (current->reloc_count != 0)
+ hasrelocs = true;
+ if (current->lineno_count != 0)
+ haslinno = true;
+
+ section.s_flags = sec_to_styp_flags (current->name, current->flags);
+
+ if (!strcmp (current->name, _TEXT))
+ {
+ text_sec = current;
+ }
+ else if (!strcmp (current->name, _DATA))
+ {
+ data_sec = current;
+#ifdef TWO_DATA_SECS
+ }
+ else if (!strcmp (current->name, ".data2"))
+ {
+ data_sec = current;
+#endif /* TWO_DATA_SECS */
+ }
+ else if (!strcmp (current->name, _BSS))
+ {
+ bss_sec = current;
+ }
+
+#ifdef I960
+ section.s_align = (current->alignment_power
+ ? 1 << current->alignment_power
+ : 0);
+
+#endif
+ {
+ SCNHDR buff;
+
+ coff_swap_scnhdr_out (abfd, &section, &buff);
+ if (bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ)
+ return false;
+
+ }
+
+ pad = 0;
+ }
+ }
+ }
+
+
+ /* OK, now set up the filehdr... */
+
+ /* Don't include the internal abs section in the section count */
+
+ /*
+ We will NOT put a fucking timestamp in the header here. Every time you
+ put it back, I will come in and take it out again. I'm sorry. This
+ field does not belong here. We fill it with a 0 so it compares the
+ same but is not a reasonable time. -- gnu@cygnus.com
+ */
+ internal_f.f_timdat = 0;
+
+ if (bfd_get_symcount (abfd) != 0)
+ internal_f.f_symptr = sym_base;
+ else
+ internal_f.f_symptr = 0;
+
+ internal_f.f_flags = 0;
+
+ if (abfd->flags & EXEC_P)
+ internal_f.f_opthdr = AOUTSZ;
+ else
+ internal_f.f_opthdr = 0;
+
+ if (!hasrelocs)
+ internal_f.f_flags |= F_RELFLG;
+ if (!haslinno)
+ internal_f.f_flags |= F_LNNO;
+ if (0 == bfd_get_symcount (abfd))
+ internal_f.f_flags |= F_LSYMS;
+ if (abfd->flags & EXEC_P)
+ internal_f.f_flags |= F_EXEC;
+
+ if (!abfd->xvec->byteorder_big_p)
+ internal_f.f_flags |= F_AR32WR;
+ else
+ internal_f.f_flags |= F_AR32W;
+
+ /*
+ FIXME, should do something about the other byte orders and
+ architectures.
+ */
+
+ memset (&internal_a, 0, sizeof internal_a);
+
+ /* Set up architecture-dependent stuff */
+
+ {
+ unsigned int magic = 0;
+ unsigned short flags = 0;
+ coff_set_flags (abfd, &magic, &flags);
+ internal_f.f_magic = magic;
+ internal_f.f_flags |= flags;
+ /* ...and the "opt"hdr... */
+
+#ifdef A29K
+#ifdef ULTRA3 /* NYU's machine */
+ /* FIXME: This is a bogus check. I really want to see if there
+ * is a .shbss or a .shdata section, if so then set the magic
+ * number to indicate a shared data executable.
+ */
+ if (internal_f.f_nscns >= 7)
+ internal_a.magic = SHMAGIC; /* Shared magic */
+ else
+#endif /* ULTRA3 */
+ internal_a.magic = NMAGIC;/* Assume separate i/d */
+#define __A_MAGIC_SET__
+#endif /* A29K */
+#ifdef I960
+ internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
+#define __A_MAGIC_SET__
+#endif /* I960 */
+#if M88
+#define __A_MAGIC_SET__
+ internal_a.magic = PAGEMAGICBCS;
+#endif /* M88 */
+
+#if APOLLO_M68
+#define __A_MAGIC_SET__
+ internal_a.magic = APOLLO_COFF_VERSION_NUMBER;
+#endif
+
+#if M68 || WE32K
+#define __A_MAGIC_SET__
+ /* Never was anything here for the 68k */
+#endif /* M68 || WE32K */
+
+#if I386
+#define __A_MAGIC_SET__
+ internal_a.magic = ZMAGIC;
+#endif /* I386 */
+
+#if RS6000COFF_C
+#define __A_MAGIC_SET__
+ internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC :
+ (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC :
+ RS6K_AOUTHDR_OMAGIC;
+#endif
+
+#ifndef __A_MAGIC_SET__
+#include "Your aouthdr magic number is not being set!"
+#else
+#undef __A_MAGIC_SET__
+#endif
+ }
+ /* Now should write relocs, strings, syms */
+ obj_sym_filepos (abfd) = sym_base;
+
+ if (bfd_get_symcount (abfd) != 0)
+ {
+#ifndef RS6000COFF_C
+ if (!coff_add_missing_symbols (abfd))
+ return false;
+#endif
+ if (!coff_renumber_symbols (abfd))
+ return false;
+ coff_mangle_symbols (abfd);
+ if (! coff_write_symbols (abfd))
+ return false;
+ if (! coff_write_linenumbers (abfd))
+ return false;
+ if (! coff_write_relocs (abfd))
+ return false;
+ }
+ if (text_sec)
+ {
+ internal_a.tsize = bfd_get_section_size_before_reloc (text_sec);
+ internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
+ }
+ if (data_sec)
+ {
+ internal_a.dsize = bfd_get_section_size_before_reloc (data_sec);
+ internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
+ }
+ if (bss_sec)
+ {
+ internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec);
+ }
+
+ internal_a.entry = bfd_get_start_address (abfd);
+ internal_f.f_nsyms = bfd_get_symcount (abfd);
+
+ /* now write them */
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
+ return false;
+ {
+ FILHDR buff;
+ coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) & buff);
+ if (bfd_write ((PTR) & buff, 1, FILHSZ, abfd) != FILHSZ)
+ return false;
+ }
+ if (abfd->flags & EXEC_P)
+ {
+ AOUTHDR buff;
+ coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) & buff);
+ if (bfd_write ((PTR) & buff, 1, AOUTSZ, abfd) != AOUTSZ)
+ return false;
+ }
+ return true;
+}
+
+static boolean
+coff_set_section_contents (abfd, section, location, offset, count)
+ bfd * abfd;
+ sec_ptr section;
+ PTR location;
+ file_ptr offset;
+ bfd_size_type count;
+{
+ if (abfd->output_has_begun == false) /* set by bfd.c handler */
+ coff_compute_section_file_positions (abfd);
+
+#ifdef _LIB
+ /* If this is a .lib section, bump the vma address so that it
+ winds up being the number of .lib sections output. This is
+ right for SVR3.2. Shared libraries should probably get more
+ generic support. Ian Taylor <ian@cygnus.com>. */
+ if (strcmp (section->name, _LIB) == 0)
+ ++section->lma;
+#endif
+
+ /* Don't write out bss sections - one way to do this is to
+ see if the filepos has not been set. */
+ if (section->filepos == 0)
+ return true;
+
+ if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0)
+ return false;
+
+ if (count != 0)
+ {
+ return (bfd_write (location, 1, count, abfd) == count) ? true : false;
+ }
+ return true;
+}
+#if 0
+static boolean
+coff_close_and_cleanup (abfd)
+ bfd *abfd;
+{
+ if (!bfd_read_p (abfd))
+ switch (abfd->format)
+ {
+ case bfd_archive:
+ if (!_bfd_write_archive_contents (abfd))
+ return false;
+ break;
+ case bfd_object:
+ if (!coff_write_object_contents (abfd))
+ return false;
+ break;
+ default:
+ bfd_set_error (bfd_error_invalid_operation);
+ return false;
+ }
+
+ /* We depend on bfd_close to free all the memory on the obstack. */
+ /* FIXME if bfd_release is not using obstacks! */
+ return true;
+}
+
+#endif
+
+static PTR
+buy_and_read (abfd, where, seek_direction, size)
+ bfd *abfd;
+ file_ptr where;
+ int seek_direction;
+ size_t size;
+{
+ PTR area = (PTR) bfd_alloc (abfd, size);
+ if (!area)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return (NULL);
+ }
+ if (bfd_seek (abfd, where, seek_direction) != 0
+ || bfd_read (area, 1, size, abfd) != size)
+ return (NULL);
+ return (area);
+} /* buy_and_read() */
+
+/*
+SUBSUBSECTION
+ Reading linenumbers
+
+ Creating the linenumber table is done by reading in the entire
+ coff linenumber table, and creating another table for internal use.
+
+ A coff linenumber table is structured so that each function
+ is marked as having a line number of 0. Each line within the
+ function is an offset from the first line in the function. The
+ base of the line number information for the table is stored in
+ the symbol associated with the function.
+
+ The information is copied from the external to the internal
+ table, and each symbol which marks a function is marked by
+ pointing its...
+
+ How does this work ?
+
+*/
+
+static boolean
+coff_slurp_line_table (abfd, asect)
+ bfd *abfd;
+ asection *asect;
+{
+ LINENO *native_lineno;
+ alent *lineno_cache;
+
+ BFD_ASSERT (asect->lineno == (alent *) NULL);
+
+ native_lineno = (LINENO *) buy_and_read (abfd,
+ asect->line_filepos,
+ SEEK_SET,
+ (size_t) (LINESZ *
+ asect->lineno_count));
+ lineno_cache =
+ (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent)));
+ if (lineno_cache == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ else
+ {
+ unsigned int counter = 0;
+ alent *cache_ptr = lineno_cache;
+ LINENO *src = native_lineno;
+
+ while (counter < asect->lineno_count)
+ {
+ struct internal_lineno dst;
+ coff_swap_lineno_in (abfd, src, &dst);
+ cache_ptr->line_number = dst.l_lnno;
+
+ if (cache_ptr->line_number == 0)
+ {
+ coff_symbol_type *sym =
+ (coff_symbol_type *) (dst.l_addr.l_symndx
+ + obj_raw_syments (abfd))->u.syment._n._n_n._n_zeroes;
+ cache_ptr->u.sym = (asymbol *) sym;
+ sym->lineno = cache_ptr;
+ }
+ else
+ {
+ cache_ptr->u.offset = dst.l_addr.l_paddr
+ - bfd_section_vma (abfd, asect);
+ } /* If no linenumber expect a symbol index */
+
+ cache_ptr++;
+ src++;
+ counter++;
+ }
+ cache_ptr->line_number = 0;
+
+ }
+ asect->lineno = lineno_cache;
+ /* FIXME, free native_lineno here, or use alloca or something. */
+ return true;
+}
+
+static boolean
+coff_slurp_symbol_table (abfd)
+ bfd * abfd;
+{
+ combined_entry_type *native_symbols;
+ coff_symbol_type *cached_area;
+ unsigned int *table_ptr;
+
+ unsigned int number_of_symbols = 0;
+ if (obj_symbols (abfd))
+ return true;
+ if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0)
+ return false;
+
+ /* Read in the symbol table */
+ if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL)
+ {
+ return (false);
+ } /* on error */
+
+ /* Allocate enough room for all the symbols in cached form */
+ cached_area =
+ (coff_symbol_type *)
+ bfd_alloc (abfd, (size_t) (bfd_get_symcount (abfd) * sizeof (coff_symbol_type)));
+
+ if (cached_area == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ } /* on error */
+ table_ptr =
+ (unsigned int *)
+ bfd_alloc (abfd, (size_t) (bfd_get_symcount (abfd) * sizeof (unsigned int)));
+
+ if (table_ptr == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ else
+ {
+ coff_symbol_type *dst = cached_area;
+ unsigned int last_native_index = bfd_get_symcount (abfd);
+ unsigned int this_index = 0;
+ while (this_index < last_native_index)
+ {
+ combined_entry_type *src = native_symbols + this_index;
+ table_ptr[this_index] = number_of_symbols;
+ dst->symbol.the_bfd = abfd;
+
+ dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset);
+ /* We use the native name field to point to the cached field. */
+ src->u.syment._n._n_n._n_zeroes = (long) dst;
+ dst->symbol.section = coff_section_from_bfd_index (abfd,
+ src->u.syment.n_scnum);
+ dst->symbol.flags = 0;
+ dst->done_lineno = false;
+
+ switch (src->u.syment.n_sclass)
+ {
+#ifdef I960
+ case C_LEAFEXT:
+#if 0
+ dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
+ dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
+ dst->symbol.flags |= BSF_NOT_AT_END;
+#endif
+ /* Fall through to next case */
+
+#endif
+
+ case C_EXT:
+#ifdef RS6000COFF_C
+ case C_HIDEXT:
+#endif
+ if ((src->u.syment.n_scnum) == 0)
+ {
+ if ((src->u.syment.n_value) == 0)
+ {
+ dst->symbol.section = bfd_und_section_ptr;
+ dst->symbol.value = 0;
+ }
+ else
+ {
+ dst->symbol.section = bfd_com_section_ptr;
+ dst->symbol.value = (src->u.syment.n_value);
+ }
+ }
+ else
+ {
+ /*
+ Base the value as an index from the base of the
+ section
+ */
+
+ dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
+ dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
+
+ if (ISFCN ((src->u.syment.n_type)))
+ {
+ /*
+ A function ext does not go at the end of a file
+ */
+ dst->symbol.flags |= BSF_NOT_AT_END;
+ }
+ }
+
+#ifdef RS6000COFF_C
+ /* If this symbol has a csect aux of type LD, the scnlen field
+ is actually the index of the containing csect symbol. We
+ need to pointerize it. */
+ if (src->u.syment.n_numaux > 0)
+ {
+ combined_entry_type *aux;
+
+ aux = src + src->u.syment.n_numaux - 1;
+ if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD)
+ {
+ aux->u.auxent.x_csect.x_scnlen.p =
+ native_symbols + aux->u.auxent.x_csect.x_scnlen.l;
+ aux->fix_scnlen = 1;
+ }
+ }
+#endif
+
+ break;
+
+ case C_STAT: /* static */
+#ifdef I960
+ case C_LEAFSTAT: /* static leaf procedure */
+#endif
+ case C_LABEL: /* label */
+ if (src->u.syment.n_scnum == -2)
+ dst->symbol.flags = BSF_DEBUGGING;
+ else
+ dst->symbol.flags = BSF_LOCAL;
+ /*
+ Base the value as an index from the base of the section, if
+ there is one
+ */
+ if (dst->symbol.section)
+ dst->symbol.value = (src->u.syment.n_value) -
+ dst->symbol.section->vma;
+ else
+ dst->symbol.value = (src->u.syment.n_value);
+ break;
+
+ case C_MOS: /* member of structure */
+ case C_EOS: /* end of structure */
+#ifdef NOTDEF /* C_AUTOARG has the same value */
+#ifdef C_GLBLREG
+ case C_GLBLREG: /* A29k-specific storage class */
+#endif
+#endif
+ case C_REGPARM: /* register parameter */
+ case C_REG: /* register variable */
+#ifdef C_AUTOARG
+ case C_AUTOARG: /* 960-specific storage class */
+#endif
+ case C_TPDEF: /* type definition */
+ case C_ARG:
+ case C_AUTO: /* automatic variable */
+ case C_FIELD: /* bit field */
+ case C_ENTAG: /* enumeration tag */
+ case C_MOE: /* member of enumeration */
+ case C_MOU: /* member of union */
+ case C_UNTAG: /* union tag */
+ dst->symbol.flags = BSF_DEBUGGING;
+ dst->symbol.value = (src->u.syment.n_value);
+ break;
+
+ case C_FILE: /* file name */
+ case C_STRTAG: /* structure tag */
+#ifdef RS6000COFF_C
+ case C_BINCL: /* beginning of include file */
+ case C_EINCL: /* ending of include file */
+ case C_GSYM:
+ case C_LSYM:
+ case C_PSYM:
+ case C_RSYM:
+ case C_RPSYM:
+ case C_STSYM:
+ case C_DECL:
+ case C_ENTRY:
+ case C_FUN:
+ case C_ESTAT:
+#endif
+ dst->symbol.flags = BSF_DEBUGGING;
+ dst->symbol.value = (src->u.syment.n_value);
+ break;
+
+#ifdef RS6000COFF_C
+ case C_BSTAT:
+ dst->symbol.flags = BSF_DEBUGGING;
+ dst->symbol.value = src->u.syment.n_value;
+
+ /* The value is actually a symbol index. Save a pointer to
+ the symbol instead of the index. FIXME: This should use a
+ union. */
+ src->u.syment.n_value =
+ (long) (native_symbols + src->u.syment.n_value);
+ src->fix_value = 1;
+ break;
+#endif
+
+ case C_BLOCK: /* ".bb" or ".eb" */
+ case C_FCN: /* ".bf" or ".ef" */
+ case C_EFCN: /* physical end of function */
+ dst->symbol.flags = BSF_LOCAL;
+ /*
+ Base the value as an index from the base of the section
+ */
+ dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma;
+ break;
+
+ case C_NULL:
+ case C_EXTDEF: /* external definition */
+ case C_ULABEL: /* undefined label */
+ case C_USTATIC: /* undefined static */
+ case C_LINE: /* line # reformatted as symbol table entry */
+ case C_ALIAS: /* duplicate tag */
+ case C_HIDDEN: /* ext symbol in dmert public lib */
+ default:
+
+ fprintf (stderr, "Unrecognized storage class %d (assuming debugging)\n for %s symbol `%s'\n",
+ src->u.syment.n_sclass, dst->symbol.section->name,
+ dst->symbol.name);
+/* abort();*/
+ dst->symbol.flags = BSF_DEBUGGING;
+ dst->symbol.value = (src->u.syment.n_value);
+ break;
+ }
+
+/* BFD_ASSERT(dst->symbol.flags != 0);*/
+
+ dst->native = src;
+
+ dst->symbol.udata = 0;
+ dst->lineno = (alent *) NULL;
+ this_index += (src->u.syment.n_numaux) + 1;
+ dst++;
+ number_of_symbols++;
+ } /* walk the native symtab */
+ } /* bfdize the native symtab */
+
+ obj_symbols (abfd) = cached_area;
+ obj_raw_syments (abfd) = native_symbols;
+
+ obj_conv_table_size (abfd) = bfd_get_symcount (abfd);
+ bfd_get_symcount (abfd) = number_of_symbols;
+ obj_convert (abfd) = table_ptr;
+ /* Slurp the line tables for each section too */
+ {
+ asection *p;
+ p = abfd->sections;
+ while (p)
+ {
+ coff_slurp_line_table (abfd, p);
+ p = p->next;
+ }
+ }
+ return true;
+} /* coff_slurp_symbol_table() */
+
+/*
+SUBSUBSECTION
+ Reading relocations
+
+ Coff relocations are easily transformed into the internal BFD form
+ (@code{arelent}).
+
+ Reading a coff relocation table is done in the following stages:
+
+ o Read the entire coff relocation table into memory.
+
+ o Process each relocation in turn; first swap it from the
+ external to the internal form.
+
+ o Turn the symbol referenced in the relocation's symbol index
+ into a pointer into the canonical symbol table.
+ This table is the same as the one returned by a call to
+ @code{bfd_canonicalize_symtab}. The back end will call that
+ routine and save the result if a canonicalization hasn't been done.
+
+ o The reloc index is turned into a pointer to a howto
+ structure, in a back end specific way. For instance, the 386
+ and 960 use the @code{r_type} to directly produce an index
+ into a howto table vector; the 88k subtracts a number from the
+ @code{r_type} field and creates an addend field.
+
+
+*/
+
+#ifndef CALC_ADDEND
+#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
+ { \
+ coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
+ if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
+ coffsym = (obj_symbols (abfd) \
+ + (cache_ptr->sym_ptr_ptr - symbols)); \
+ else if (ptr) \
+ coffsym = coff_symbol_from (abfd, ptr); \
+ if (coffsym != (coff_symbol_type *) NULL \
+ && coffsym->native->u.syment.n_scnum == 0) \
+ cache_ptr->addend = 0; \
+ else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
+ && ptr->section != (asection *) NULL) \
+ cache_ptr->addend = - (ptr->section->vma + ptr->value); \
+ else \
+ cache_ptr->addend = 0; \
+ }
+#endif
+
+static boolean
+coff_slurp_reloc_table (abfd, asect, symbols)
+ bfd * abfd;
+ sec_ptr asect;
+ asymbol ** symbols;
+{
+ RELOC *native_relocs;
+ arelent *reloc_cache;
+ arelent *cache_ptr;
+
+ unsigned int idx;
+
+ if (asect->relocation)
+ return true;
+ if (asect->reloc_count == 0)
+ return true;
+ if (asect->flags & SEC_CONSTRUCTOR)
+ return true;
+ if (!coff_slurp_symbol_table (abfd))
+ return false;
+ native_relocs =
+ (RELOC *) buy_and_read (abfd,
+ asect->rel_filepos,
+ SEEK_SET,
+ (size_t) (RELSZ *
+ asect->reloc_count));
+ reloc_cache = (arelent *)
+ bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
+
+ if (reloc_cache == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+
+ for (idx = 0; idx < asect->reloc_count; idx++)
+ {
+#ifdef RELOC_PROCESSING
+ struct internal_reloc dst;
+ struct external_reloc *src;
+
+ cache_ptr = reloc_cache + idx;
+ src = native_relocs + idx;
+ bfd_swap_reloc_in (abfd, src, &dst);
+
+ RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
+#else
+ struct internal_reloc dst;
+ asymbol *ptr;
+ struct external_reloc *src;
+
+ cache_ptr = reloc_cache + idx;
+ src = native_relocs + idx;
+
+ bfd_swap_reloc_in (abfd, src, &dst);
+
+
+ cache_ptr->address = dst.r_vaddr;
+
+ if (dst.r_symndx != -1)
+ {
+ /* @@ Should never be greater than count of symbols! */
+ if (dst.r_symndx >= obj_conv_table_size (abfd))
+ abort ();
+ cache_ptr->sym_ptr_ptr = symbols + obj_convert (abfd)[dst.r_symndx];
+ ptr = *(cache_ptr->sym_ptr_ptr);
+ }
+ else
+ {
+ cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ ptr = 0;
+ }
+
+ /* The symbols definitions that we have read in have been
+ relocated as if their sections started at 0. But the offsets
+ refering to the symbols in the raw data have not been
+ modified, so we have to have a negative addend to compensate.
+
+ Note that symbols which used to be common must be left alone */
+
+ /* Calculate any reloc addend by looking at the symbol */
+ CALC_ADDEND (abfd, ptr, dst, cache_ptr);
+
+ cache_ptr->address -= asect->vma;
+/* !! cache_ptr->section = (asection *) NULL;*/
+
+ /* Fill in the cache_ptr->howto field from dst.r_type */
+ RTYPE2HOWTO (cache_ptr, &dst);
+#endif
+
+ }
+
+ asect->relocation = reloc_cache;
+ return true;
+}
+
+
+/* This is stupid. This function should be a boolean predicate. */
+static long
+coff_canonicalize_reloc (abfd, section, relptr, symbols)
+ bfd * abfd;
+ sec_ptr section;
+ arelent ** relptr;
+ asymbol ** symbols;
+{
+ arelent *tblptr = section->relocation;
+ unsigned int count = 0;
+
+
+ if (section->flags & SEC_CONSTRUCTOR)
+ {
+ /* this section has relocs made up by us, they are not in the
+ file, so take them out of their chain and place them into
+ the data area provided */
+ arelent_chain *chain = section->constructor_chain;
+ for (count = 0; count < section->reloc_count; count++)
+ {
+ *relptr++ = &chain->relent;
+ chain = chain->next;
+ }
+
+ }
+ else
+ {
+ if (! coff_slurp_reloc_table (abfd, section, symbols))
+ return -1;
+
+ tblptr = section->relocation;
+
+ for (; count++ < section->reloc_count;)
+ *relptr++ = tblptr++;
+
+
+ }
+ *relptr = 0;
+ return section->reloc_count;
+}
+
+#ifdef GNU960
+file_ptr
+coff_sym_filepos (abfd)
+ bfd *abfd;
+{
+ return obj_sym_filepos (abfd);
+}
+#endif
+
+#ifndef coff_reloc16_estimate
+#define coff_reloc16_estimate dummy_reloc16_estimate
+
+static int
+dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
+ bfd *abfd;
+ asection *input_section;
+ arelent *reloc;
+ unsigned int shrink;
+ struct bfd_link_info *link_info;
+{
+ abort ();
+}
+
+#endif
+
+#ifndef coff_reloc16_extra_cases
+#define coff_reloc16_extra_cases dummy_reloc16_extra_cases
+/* This works even if abort is not declared in any header file. */
+static void
+dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
+ dst_ptr)
+ bfd *abfd;
+ struct bfd_link_info *link_info;
+ struct bfd_link_order *link_order;
+ arelent *reloc;
+ bfd_byte *data;
+ unsigned int *src_ptr;
+ unsigned int *dst_ptr;
+{
+ fprintf (stderr, "%s\n", reloc->howto->name);
+ abort ();
+}
+#endif
+
+static CONST bfd_coff_backend_data bfd_coff_std_swap_table =
+{
+ coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in,
+ coff_swap_aux_out, coff_swap_sym_out,
+ coff_swap_lineno_out, coff_swap_reloc_out,
+ coff_swap_filehdr_out, coff_swap_aouthdr_out,
+ coff_swap_scnhdr_out,
+ FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, LINESZ,
+#ifdef COFF_LONG_FILENAMES
+ true,
+#else
+ false,
+#endif
+ coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in,
+ coff_bad_format_hook, coff_set_arch_mach_hook, coff_mkobject_hook,
+ styp_to_sec_flags, coff_make_section_hook, coff_set_alignment_hook,
+ coff_slurp_symbol_table, symname_in_debug_hook,
+ coff_reloc16_extra_cases, coff_reloc16_estimate
+};
+
+#define coff_close_and_cleanup _bfd_generic_close_and_cleanup
+#define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
+#define coff_get_section_contents _bfd_generic_get_section_contents
+
+#define coff_bfd_copy_private_section_data \
+ _bfd_generic_bfd_copy_private_section_data
+#define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data
+
+#ifndef coff_bfd_is_local_label
+#define coff_bfd_is_local_label bfd_generic_is_local_label
+#endif
+
+/* The reloc lookup routine must be supplied by each individual COFF
+ backend. */
+#ifndef coff_bfd_reloc_type_lookup
+#define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
+#endif
+
+#define coff_bfd_get_relocated_section_contents \
+ bfd_generic_get_relocated_section_contents
+#define coff_bfd_relax_section bfd_generic_relax_section
+#define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
+#define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols
+#define coff_bfd_final_link _bfd_generic_final_link
diff --git a/gnu/usr.bin/gdb/bfd/coffswap.h b/gnu/usr.bin/gdb/bfd/coffswap.h
new file mode 100644
index 0000000000000..74cc46ebe21f3
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/coffswap.h
@@ -0,0 +1,741 @@
+/* Generic COFF swapping routines, for BFD.
+ Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+ Written by Cygnus Support.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* This file contains routines used to swap COFF data. It is a header
+ file because the details of swapping depend on the details of the
+ structures used by each COFF implementation. This is included by
+ coffcode.h, as well as by the ECOFF backend.
+
+ Any file which uses this must first include "coff/internal.h" and
+ "coff/CPU.h". The functions will then be correct for that CPU. */
+
+#define PUTWORD bfd_h_put_32
+#define PUTHALF bfd_h_put_16
+#define PUTBYTE bfd_h_put_8
+
+#ifndef GET_FCN_LNNOPTR
+#define GET_FCN_LNNOPTR(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
+#endif
+
+#ifndef GET_FCN_ENDNDX
+#define GET_FCN_ENDNDX(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx)
+#endif
+
+#ifndef PUT_FCN_LNNOPTR
+#define PUT_FCN_LNNOPTR(abfd, in, ext) PUTWORD(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
+#endif
+#ifndef PUT_FCN_ENDNDX
+#define PUT_FCN_ENDNDX(abfd, in, ext) PUTWORD(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx)
+#endif
+#ifndef GET_LNSZ_LNNO
+#define GET_LNSZ_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno)
+#endif
+#ifndef GET_LNSZ_SIZE
+#define GET_LNSZ_SIZE(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size)
+#endif
+#ifndef PUT_LNSZ_LNNO
+#define PUT_LNSZ_LNNO(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_sym.x_misc.x_lnsz.x_lnno)
+#endif
+#ifndef PUT_LNSZ_SIZE
+#define PUT_LNSZ_SIZE(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte*) ext->x_sym.x_misc.x_lnsz.x_size)
+#endif
+#ifndef GET_SCN_SCNLEN
+#define GET_SCN_SCNLEN(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_scnlen)
+#endif
+#ifndef GET_SCN_NRELOC
+#define GET_SCN_NRELOC(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nreloc)
+#endif
+#ifndef GET_SCN_NLINNO
+#define GET_SCN_NLINNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nlinno)
+#endif
+#ifndef PUT_SCN_SCNLEN
+#define PUT_SCN_SCNLEN(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_scn.x_scnlen)
+#endif
+#ifndef PUT_SCN_NRELOC
+#define PUT_SCN_NRELOC(abfd,in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_scn.x_nreloc)
+#endif
+#ifndef PUT_SCN_NLINNO
+#define PUT_SCN_NLINNO(abfd,in, ext) bfd_h_put_16(abfd,in, (bfd_byte *) ext->x_scn.x_nlinno)
+#endif
+#ifndef GET_LINENO_LNNO
+#define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));
+#endif
+#ifndef PUT_LINENO_LNNO
+#define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val, (bfd_byte *) (ext->l_lnno));
+#endif
+
+/* The f_symptr field in the filehdr is sometimes 64 bits. */
+#ifndef GET_FILEHDR_SYMPTR
+#define GET_FILEHDR_SYMPTR bfd_h_get_32
+#endif
+#ifndef PUT_FILEHDR_SYMPTR
+#define PUT_FILEHDR_SYMPTR bfd_h_put_32
+#endif
+
+/* Some fields in the aouthdr are sometimes 64 bits. */
+#ifndef GET_AOUTHDR_TSIZE
+#define GET_AOUTHDR_TSIZE bfd_h_get_32
+#endif
+#ifndef PUT_AOUTHDR_TSIZE
+#define PUT_AOUTHDR_TSIZE bfd_h_put_32
+#endif
+#ifndef GET_AOUTHDR_DSIZE
+#define GET_AOUTHDR_DSIZE bfd_h_get_32
+#endif
+#ifndef PUT_AOUTHDR_DSIZE
+#define PUT_AOUTHDR_DSIZE bfd_h_put_32
+#endif
+#ifndef GET_AOUTHDR_BSIZE
+#define GET_AOUTHDR_BSIZE bfd_h_get_32
+#endif
+#ifndef PUT_AOUTHDR_BSIZE
+#define PUT_AOUTHDR_BSIZE bfd_h_put_32
+#endif
+#ifndef GET_AOUTHDR_ENTRY
+#define GET_AOUTHDR_ENTRY bfd_h_get_32
+#endif
+#ifndef PUT_AOUTHDR_ENTRY
+#define PUT_AOUTHDR_ENTRY bfd_h_put_32
+#endif
+#ifndef GET_AOUTHDR_TEXT_START
+#define GET_AOUTHDR_TEXT_START bfd_h_get_32
+#endif
+#ifndef PUT_AOUTHDR_TEXT_START
+#define PUT_AOUTHDR_TEXT_START bfd_h_put_32
+#endif
+#ifndef GET_AOUTHDR_DATA_START
+#define GET_AOUTHDR_DATA_START bfd_h_get_32
+#endif
+#ifndef PUT_AOUTHDR_DATA_START
+#define PUT_AOUTHDR_DATA_START bfd_h_put_32
+#endif
+
+/* Some fields in the scnhdr are sometimes 64 bits. */
+#ifndef GET_SCNHDR_PADDR
+#define GET_SCNHDR_PADDR bfd_h_get_32
+#endif
+#ifndef PUT_SCNHDR_PADDR
+#define PUT_SCNHDR_PADDR bfd_h_put_32
+#endif
+#ifndef GET_SCNHDR_VADDR
+#define GET_SCNHDR_VADDR bfd_h_get_32
+#endif
+#ifndef PUT_SCNHDR_VADDR
+#define PUT_SCNHDR_VADDR bfd_h_put_32
+#endif
+#ifndef GET_SCNHDR_SIZE
+#define GET_SCNHDR_SIZE bfd_h_get_32
+#endif
+#ifndef PUT_SCNHDR_SIZE
+#define PUT_SCNHDR_SIZE bfd_h_put_32
+#endif
+#ifndef GET_SCNHDR_SCNPTR
+#define GET_SCNHDR_SCNPTR bfd_h_get_32
+#endif
+#ifndef PUT_SCNHDR_SCNPTR
+#define PUT_SCNHDR_SCNPTR bfd_h_put_32
+#endif
+#ifndef GET_SCNHDR_RELPTR
+#define GET_SCNHDR_RELPTR bfd_h_get_32
+#endif
+#ifndef PUT_SCNHDR_RELPTR
+#define PUT_SCNHDR_RELPTR bfd_h_put_32
+#endif
+#ifndef GET_SCNHDR_LNNOPTR
+#define GET_SCNHDR_LNNOPTR bfd_h_get_32
+#endif
+#ifndef PUT_SCNHDR_LNNOPTR
+#define PUT_SCNHDR_LNNOPTR bfd_h_put_32
+#endif
+
+#ifndef NO_COFF_RELOCS
+
+static void
+bfd_swap_reloc_in (abfd, reloc_src, reloc_dst)
+ bfd *abfd;
+ RELOC *reloc_src;
+ struct internal_reloc *reloc_dst;
+{
+ reloc_dst->r_vaddr = bfd_h_get_32(abfd, (bfd_byte *)reloc_src->r_vaddr);
+ reloc_dst->r_symndx = bfd_h_get_signed_32(abfd, (bfd_byte *) reloc_src->r_symndx);
+
+#ifdef RS6000COFF_C
+ reloc_dst->r_type = bfd_h_get_8(abfd, reloc_src->r_type);
+ reloc_dst->r_size = bfd_h_get_8(abfd, reloc_src->r_size);
+#else
+ reloc_dst->r_type = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_type);
+#endif
+
+#ifdef SWAP_IN_RELOC_OFFSET
+ reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET(abfd,
+ (bfd_byte *) reloc_src->r_offset);
+#endif
+}
+
+
+static unsigned int
+coff_swap_reloc_out (abfd, src, dst)
+ bfd *abfd;
+ PTR src;
+ PTR dst;
+{
+ struct internal_reloc *reloc_src = (struct internal_reloc *)src;
+ struct external_reloc *reloc_dst = (struct external_reloc *)dst;
+ bfd_h_put_32(abfd, reloc_src->r_vaddr, (bfd_byte *) reloc_dst->r_vaddr);
+ bfd_h_put_32(abfd, reloc_src->r_symndx, (bfd_byte *) reloc_dst->r_symndx);
+
+#ifdef RS6000COFF_C
+ bfd_h_put_8 (abfd, reloc_src->r_type, (bfd_byte *) reloc_dst->r_type);
+ bfd_h_put_8 (abfd, reloc_src->r_size, (bfd_byte *) reloc_dst->r_size);
+#else
+ bfd_h_put_16(abfd, reloc_src->r_type, (bfd_byte *)
+ reloc_dst->r_type);
+#endif
+
+#ifdef SWAP_OUT_RELOC_OFFSET
+ SWAP_OUT_RELOC_OFFSET(abfd,
+ reloc_src->r_offset,
+ (bfd_byte *) reloc_dst->r_offset);
+#endif
+#ifdef SWAP_OUT_RELOC_EXTRA
+ SWAP_OUT_RELOC_EXTRA(abfd,reloc_src, reloc_dst);
+#endif
+
+ return sizeof(struct external_reloc);
+}
+
+#endif /* NO_COFF_RELOCS */
+
+static void
+coff_swap_filehdr_in (abfd, src, dst)
+ bfd *abfd;
+ PTR src;
+ PTR dst;
+{
+ FILHDR *filehdr_src = (FILHDR *) src;
+ struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
+ filehdr_dst->f_magic = bfd_h_get_16(abfd, (bfd_byte *) filehdr_src->f_magic);
+ filehdr_dst->f_nscns = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_nscns);
+ filehdr_dst->f_timdat = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_timdat);
+ filehdr_dst->f_symptr =
+ GET_FILEHDR_SYMPTR (abfd, (bfd_byte *) filehdr_src->f_symptr);
+ filehdr_dst->f_nsyms = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_nsyms);
+ filehdr_dst->f_opthdr = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_opthdr);
+ filehdr_dst->f_flags = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_flags);
+}
+
+static unsigned int
+coff_swap_filehdr_out (abfd, in, out)
+ bfd *abfd;
+ PTR in;
+ PTR out;
+{
+ struct internal_filehdr *filehdr_in = (struct internal_filehdr *)in;
+ FILHDR *filehdr_out = (FILHDR *)out;
+ bfd_h_put_16(abfd, filehdr_in->f_magic, (bfd_byte *) filehdr_out->f_magic);
+ bfd_h_put_16(abfd, filehdr_in->f_nscns, (bfd_byte *) filehdr_out->f_nscns);
+ bfd_h_put_32(abfd, filehdr_in->f_timdat, (bfd_byte *) filehdr_out->f_timdat);
+ PUT_FILEHDR_SYMPTR (abfd, (bfd_vma) filehdr_in->f_symptr,
+ (bfd_byte *) filehdr_out->f_symptr);
+ bfd_h_put_32(abfd, filehdr_in->f_nsyms, (bfd_byte *) filehdr_out->f_nsyms);
+ bfd_h_put_16(abfd, filehdr_in->f_opthdr, (bfd_byte *) filehdr_out->f_opthdr);
+ bfd_h_put_16(abfd, filehdr_in->f_flags, (bfd_byte *) filehdr_out->f_flags);
+ return sizeof(FILHDR);
+}
+
+
+#ifndef NO_COFF_SYMBOLS
+
+static void
+coff_swap_sym_in (abfd, ext1, in1)
+ bfd *abfd;
+ PTR ext1;
+ PTR in1;
+{
+ SYMENT *ext = (SYMENT *)ext1;
+ struct internal_syment *in = (struct internal_syment *)in1;
+
+ if( ext->e.e_name[0] == 0) {
+ in->_n._n_n._n_zeroes = 0;
+ in->_n._n_n._n_offset = bfd_h_get_32(abfd, (bfd_byte *) ext->e.e.e_offset);
+ }
+ else {
+#if SYMNMLEN != E_SYMNMLEN
+ -> Error, we need to cope with truncating or extending SYMNMLEN!;
+#else
+ memcpy(in->_n._n_name, ext->e.e_name, SYMNMLEN);
+#endif
+ }
+ in->n_value = bfd_h_get_32(abfd, (bfd_byte *) ext->e_value);
+ in->n_scnum = bfd_h_get_16(abfd, (bfd_byte *) ext->e_scnum);
+ if (sizeof(ext->e_type) == 2){
+ in->n_type = bfd_h_get_16(abfd, (bfd_byte *) ext->e_type);
+ }
+ else {
+ in->n_type = bfd_h_get_32(abfd, (bfd_byte *) ext->e_type);
+ }
+ in->n_sclass = bfd_h_get_8(abfd, ext->e_sclass);
+ in->n_numaux = bfd_h_get_8(abfd, ext->e_numaux);
+}
+
+static unsigned int
+coff_swap_sym_out (abfd, inp, extp)
+ bfd *abfd;
+ PTR inp;
+ PTR extp;
+{
+ struct internal_syment *in = (struct internal_syment *)inp;
+ SYMENT *ext =(SYMENT *)extp;
+ if(in->_n._n_name[0] == 0) {
+ bfd_h_put_32(abfd, 0, (bfd_byte *) ext->e.e.e_zeroes);
+ bfd_h_put_32(abfd, in->_n._n_n._n_offset, (bfd_byte *) ext->e.e.e_offset);
+ }
+ else {
+#if SYMNMLEN != E_SYMNMLEN
+ -> Error, we need to cope with truncating or extending SYMNMLEN!;
+#else
+ memcpy(ext->e.e_name, in->_n._n_name, SYMNMLEN);
+#endif
+ }
+ bfd_h_put_32(abfd, in->n_value , (bfd_byte *) ext->e_value);
+ bfd_h_put_16(abfd, in->n_scnum , (bfd_byte *) ext->e_scnum);
+ if (sizeof(ext->e_type) == 2)
+ {
+ bfd_h_put_16(abfd, in->n_type , (bfd_byte *) ext->e_type);
+ }
+ else
+ {
+ bfd_h_put_32(abfd, in->n_type , (bfd_byte *) ext->e_type);
+ }
+ bfd_h_put_8(abfd, in->n_sclass , ext->e_sclass);
+ bfd_h_put_8(abfd, in->n_numaux , ext->e_numaux);
+ return sizeof(SYMENT);
+}
+
+static void
+coff_swap_aux_in (abfd, ext1, type, class, indx, numaux, in1)
+ bfd *abfd;
+ PTR ext1;
+ int type;
+ int class;
+ int indx;
+ int numaux;
+ PTR in1;
+{
+ AUXENT *ext = (AUXENT *)ext1;
+ union internal_auxent *in = (union internal_auxent *)in1;
+
+ switch (class) {
+ case C_FILE:
+ if (ext->x_file.x_fname[0] == 0) {
+ in->x_file.x_n.x_zeroes = 0;
+ in->x_file.x_n.x_offset =
+ bfd_h_get_32(abfd, (bfd_byte *) ext->x_file.x_n.x_offset);
+ } else {
+#if FILNMLEN != E_FILNMLEN
+ -> Error, we need to cope with truncating or extending FILNMLEN!;
+#else
+ memcpy (in->x_file.x_fname, ext->x_file.x_fname, FILNMLEN);
+#endif
+ }
+ return;
+
+ /* RS/6000 "csect" auxents */
+#ifdef RS6000COFF_C
+ case C_EXT:
+ case C_HIDEXT:
+ if (indx + 1 == numaux)
+ {
+ in->x_csect.x_scnlen.l = bfd_h_get_32 (abfd, ext->x_csect.x_scnlen);
+ in->x_csect.x_parmhash = bfd_h_get_32 (abfd,
+ ext->x_csect.x_parmhash);
+ in->x_csect.x_snhash = bfd_h_get_16 (abfd, ext->x_csect.x_snhash);
+ /* We don't have to hack bitfields in x_smtyp because it's
+ defined by shifts-and-ands, which are equivalent on all
+ byte orders. */
+ in->x_csect.x_smtyp = bfd_h_get_8 (abfd, ext->x_csect.x_smtyp);
+ in->x_csect.x_smclas = bfd_h_get_8 (abfd, ext->x_csect.x_smclas);
+ in->x_csect.x_stab = bfd_h_get_32 (abfd, ext->x_csect.x_stab);
+ in->x_csect.x_snstab = bfd_h_get_16 (abfd, ext->x_csect.x_snstab);
+ return;
+ }
+ break;
+#endif
+
+ case C_STAT:
+#ifdef C_LEAFSTAT
+ case C_LEAFSTAT:
+#endif
+ case C_HIDDEN:
+ if (type == T_NULL) {
+ in->x_scn.x_scnlen = GET_SCN_SCNLEN(abfd, ext);
+ in->x_scn.x_nreloc = GET_SCN_NRELOC(abfd, ext);
+ in->x_scn.x_nlinno = GET_SCN_NLINNO(abfd, ext);
+ return;
+ }
+ break;
+ }
+
+ in->x_sym.x_tagndx.l = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_tagndx);
+#ifndef NO_TVNDX
+ in->x_sym.x_tvndx = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_tvndx);
+#endif
+
+ if (ISARY(type)) {
+#if DIMNUM != E_DIMNUM
+ -> Error, we need to cope with truncating or extending DIMNUM!;
+#else
+ in->x_sym.x_fcnary.x_ary.x_dimen[0] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[0]);
+ in->x_sym.x_fcnary.x_ary.x_dimen[1] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[1]);
+ in->x_sym.x_fcnary.x_ary.x_dimen[2] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[2]);
+ in->x_sym.x_fcnary.x_ary.x_dimen[3] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[3]);
+#endif
+ }
+ if (class == C_BLOCK || ISFCN(type) || ISTAG(class)) {
+ in->x_sym.x_fcnary.x_fcn.x_lnnoptr = GET_FCN_LNNOPTR(abfd, ext);
+ in->x_sym.x_fcnary.x_fcn.x_endndx.l = GET_FCN_ENDNDX(abfd, ext);
+ }
+
+ if (ISFCN(type)) {
+ in->x_sym.x_misc.x_fsize = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
+ }
+ else {
+ in->x_sym.x_misc.x_lnsz.x_lnno = GET_LNSZ_LNNO(abfd, ext);
+ in->x_sym.x_misc.x_lnsz.x_size = GET_LNSZ_SIZE(abfd, ext);
+ }
+}
+
+static unsigned int
+coff_swap_aux_out (abfd, inp, type, class, indx, numaux, extp)
+ bfd *abfd;
+ PTR inp;
+ int type;
+ int class;
+ int indx;
+ int numaux;
+ PTR extp;
+{
+ union internal_auxent *in = (union internal_auxent *)inp;
+ AUXENT *ext = (AUXENT *)extp;
+
+ memset((PTR)ext, 0, AUXESZ);
+ switch (class) {
+ case C_FILE:
+ if (in->x_file.x_fname[0] == 0) {
+ PUTWORD(abfd, 0, (bfd_byte *) ext->x_file.x_n.x_zeroes);
+ PUTWORD(abfd,
+ in->x_file.x_n.x_offset,
+ (bfd_byte *) ext->x_file.x_n.x_offset);
+ }
+ else {
+#if FILNMLEN != E_FILNMLEN
+ -> Error, we need to cope with truncating or extending FILNMLEN!;
+#else
+ memcpy (ext->x_file.x_fname, in->x_file.x_fname, FILNMLEN);
+#endif
+ }
+ return sizeof (AUXENT);
+
+#ifdef RS6000COFF_C
+ /* RS/6000 "csect" auxents */
+ case C_EXT:
+ case C_HIDEXT:
+ if (indx + 1 == numaux)
+ {
+ PUTWORD (abfd, in->x_csect.x_scnlen.l, ext->x_csect.x_scnlen);
+ PUTWORD (abfd, in->x_csect.x_parmhash, ext->x_csect.x_parmhash);
+ PUTHALF (abfd, in->x_csect.x_snhash, ext->x_csect.x_snhash);
+ /* We don't have to hack bitfields in x_smtyp because it's
+ defined by shifts-and-ands, which are equivalent on all
+ byte orders. */
+ PUTBYTE (abfd, in->x_csect.x_smtyp, ext->x_csect.x_smtyp);
+ PUTBYTE (abfd, in->x_csect.x_smclas, ext->x_csect.x_smclas);
+ PUTWORD (abfd, in->x_csect.x_stab, ext->x_csect.x_stab);
+ PUTHALF (abfd, in->x_csect.x_snstab, ext->x_csect.x_snstab);
+ return sizeof (AUXENT);
+ }
+ break;
+#endif
+
+ case C_STAT:
+#ifdef C_LEAFSTAT
+ case C_LEAFSTAT:
+#endif
+ case C_HIDDEN:
+ if (type == T_NULL) {
+ PUT_SCN_SCNLEN(abfd, in->x_scn.x_scnlen, ext);
+ PUT_SCN_NRELOC(abfd, in->x_scn.x_nreloc, ext);
+ PUT_SCN_NLINNO(abfd, in->x_scn.x_nlinno, ext);
+ return sizeof (AUXENT);
+ }
+ break;
+ }
+
+ PUTWORD(abfd, in->x_sym.x_tagndx.l, (bfd_byte *) ext->x_sym.x_tagndx);
+#ifndef NO_TVNDX
+ bfd_h_put_16(abfd, in->x_sym.x_tvndx , (bfd_byte *) ext->x_sym.x_tvndx);
+#endif
+
+ if (class == C_BLOCK || ISFCN(type) || ISTAG(class)) {
+ PUT_FCN_LNNOPTR(abfd, in->x_sym.x_fcnary.x_fcn.x_lnnoptr, ext);
+ PUT_FCN_ENDNDX(abfd, in->x_sym.x_fcnary.x_fcn.x_endndx.l, ext);
+ }
+
+ if (ISFCN(type)) {
+ PUTWORD(abfd, in->x_sym.x_misc.x_fsize, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
+ }
+ else {
+ if (ISARY(type)) {
+#if DIMNUM != E_DIMNUM
+ -> Error, we need to cope with truncating or extending DIMNUM!;
+#else
+ bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[0], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[0]);
+ bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[1], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[1]);
+ bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[2], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[2]);
+ bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[3], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[3]);
+#endif
+ }
+ PUT_LNSZ_LNNO(abfd, in->x_sym.x_misc.x_lnsz.x_lnno, ext);
+ PUT_LNSZ_SIZE(abfd, in->x_sym.x_misc.x_lnsz.x_size, ext);
+ }
+ return sizeof(AUXENT);
+}
+
+#endif /* NO_COFF_SYMBOLS */
+
+#ifndef NO_COFF_LINENOS
+
+static void
+coff_swap_lineno_in (abfd, ext1, in1)
+ bfd *abfd;
+ PTR ext1;
+ PTR in1;
+{
+ LINENO *ext = (LINENO *)ext1;
+ struct internal_lineno *in = (struct internal_lineno *)in1;
+
+ in->l_addr.l_symndx = bfd_h_get_32(abfd, (bfd_byte *) ext->l_addr.l_symndx);
+ in->l_lnno = GET_LINENO_LNNO(abfd, ext);
+}
+
+static unsigned int
+coff_swap_lineno_out (abfd, inp, outp)
+ bfd *abfd;
+ PTR inp;
+ PTR outp;
+{
+ struct internal_lineno *in = (struct internal_lineno *)inp;
+ struct external_lineno *ext = (struct external_lineno *)outp;
+ PUTWORD(abfd, in->l_addr.l_symndx, (bfd_byte *)
+ ext->l_addr.l_symndx);
+
+ PUT_LINENO_LNNO (abfd, in->l_lnno, ext);
+ return sizeof(struct external_lineno);
+}
+
+#endif /* NO_COFF_LINENOS */
+
+
+static void
+coff_swap_aouthdr_in (abfd, aouthdr_ext1, aouthdr_int1)
+ bfd *abfd;
+ PTR aouthdr_ext1;
+ PTR aouthdr_int1;
+{
+ AOUTHDR *aouthdr_ext = (AOUTHDR *) aouthdr_ext1;
+ struct internal_aouthdr *aouthdr_int = (struct internal_aouthdr *)aouthdr_int1;
+
+ aouthdr_int->magic = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->magic);
+ aouthdr_int->vstamp = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->vstamp);
+ aouthdr_int->tsize =
+ GET_AOUTHDR_TSIZE (abfd, (bfd_byte *) aouthdr_ext->tsize);
+ aouthdr_int->dsize =
+ GET_AOUTHDR_DSIZE (abfd, (bfd_byte *) aouthdr_ext->dsize);
+ aouthdr_int->bsize =
+ GET_AOUTHDR_BSIZE (abfd, (bfd_byte *) aouthdr_ext->bsize);
+ aouthdr_int->entry =
+ GET_AOUTHDR_ENTRY (abfd, (bfd_byte *) aouthdr_ext->entry);
+ aouthdr_int->text_start =
+ GET_AOUTHDR_TEXT_START (abfd, (bfd_byte *) aouthdr_ext->text_start);
+ aouthdr_int->data_start =
+ GET_AOUTHDR_DATA_START (abfd, (bfd_byte *) aouthdr_ext->data_start);
+
+#ifdef I960
+ aouthdr_int->tagentries = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->tagentries);
+#endif
+
+#ifdef APOLLO_M68
+ bfd_h_put_32(abfd, aouthdr_int->o_inlib, (bfd_byte *) aouthdr_ext->o_inlib);
+ bfd_h_put_32(abfd, aouthdr_int->o_sri, (bfd_byte *) aouthdr_ext->o_sri);
+ bfd_h_put_32(abfd, aouthdr_int->vid[0], (bfd_byte *) aouthdr_ext->vid);
+ bfd_h_put_32(abfd, aouthdr_int->vid[1], (bfd_byte *) aouthdr_ext->vid + 4);
+#endif
+
+
+#ifdef RS6000COFF_C
+ aouthdr_int->o_toc = bfd_h_get_32(abfd, aouthdr_ext->o_toc);
+ aouthdr_int->o_snentry = bfd_h_get_16(abfd, aouthdr_ext->o_snentry);
+ aouthdr_int->o_sntext = bfd_h_get_16(abfd, aouthdr_ext->o_sntext);
+ aouthdr_int->o_sndata = bfd_h_get_16(abfd, aouthdr_ext->o_sndata);
+ aouthdr_int->o_sntoc = bfd_h_get_16(abfd, aouthdr_ext->o_sntoc);
+ aouthdr_int->o_snloader = bfd_h_get_16(abfd, aouthdr_ext->o_snloader);
+ aouthdr_int->o_snbss = bfd_h_get_16(abfd, aouthdr_ext->o_snbss);
+ aouthdr_int->o_algntext = bfd_h_get_16(abfd, aouthdr_ext->o_algntext);
+ aouthdr_int->o_algndata = bfd_h_get_16(abfd, aouthdr_ext->o_algndata);
+ aouthdr_int->o_modtype = bfd_h_get_16(abfd, aouthdr_ext->o_modtype);
+ aouthdr_int->o_maxstack = bfd_h_get_32(abfd, aouthdr_ext->o_maxstack);
+#endif
+
+#ifdef MIPSECOFF
+ aouthdr_int->bss_start = bfd_h_get_32(abfd, aouthdr_ext->bss_start);
+ aouthdr_int->gp_value = bfd_h_get_32(abfd, aouthdr_ext->gp_value);
+ aouthdr_int->gprmask = bfd_h_get_32(abfd, aouthdr_ext->gprmask);
+ aouthdr_int->cprmask[0] = bfd_h_get_32(abfd, aouthdr_ext->cprmask[0]);
+ aouthdr_int->cprmask[1] = bfd_h_get_32(abfd, aouthdr_ext->cprmask[1]);
+ aouthdr_int->cprmask[2] = bfd_h_get_32(abfd, aouthdr_ext->cprmask[2]);
+ aouthdr_int->cprmask[3] = bfd_h_get_32(abfd, aouthdr_ext->cprmask[3]);
+#endif
+
+#ifdef ALPHAECOFF
+ aouthdr_int->bss_start = bfd_h_get_64(abfd, aouthdr_ext->bss_start);
+ aouthdr_int->gp_value = bfd_h_get_64(abfd, aouthdr_ext->gp_value);
+ aouthdr_int->gprmask = bfd_h_get_32(abfd, aouthdr_ext->gprmask);
+ aouthdr_int->fprmask = bfd_h_get_32(abfd, aouthdr_ext->fprmask);
+#endif
+}
+
+static unsigned int
+coff_swap_aouthdr_out (abfd, in, out)
+ bfd *abfd;
+ PTR in;
+ PTR out;
+{
+ struct internal_aouthdr *aouthdr_in = (struct internal_aouthdr *)in;
+ AOUTHDR *aouthdr_out = (AOUTHDR *)out;
+
+ bfd_h_put_16(abfd, aouthdr_in->magic, (bfd_byte *) aouthdr_out->magic);
+ bfd_h_put_16(abfd, aouthdr_in->vstamp, (bfd_byte *) aouthdr_out->vstamp);
+ PUT_AOUTHDR_TSIZE (abfd, aouthdr_in->tsize, (bfd_byte *) aouthdr_out->tsize);
+ PUT_AOUTHDR_DSIZE (abfd, aouthdr_in->dsize, (bfd_byte *) aouthdr_out->dsize);
+ PUT_AOUTHDR_BSIZE (abfd, aouthdr_in->bsize, (bfd_byte *) aouthdr_out->bsize);
+ PUT_AOUTHDR_ENTRY (abfd, aouthdr_in->entry, (bfd_byte *) aouthdr_out->entry);
+ PUT_AOUTHDR_TEXT_START (abfd, aouthdr_in->text_start,
+ (bfd_byte *) aouthdr_out->text_start);
+ PUT_AOUTHDR_DATA_START (abfd, aouthdr_in->data_start,
+ (bfd_byte *) aouthdr_out->data_start);
+#ifdef I960
+ bfd_h_put_32(abfd, aouthdr_in->tagentries, (bfd_byte *) aouthdr_out->tagentries);
+#endif
+
+#ifdef MIPSECOFF
+ bfd_h_put_32(abfd, aouthdr_in->bss_start, (bfd_byte *) aouthdr_out->bss_start);
+ bfd_h_put_32(abfd, aouthdr_in->gp_value, (bfd_byte *) aouthdr_out->gp_value);
+ bfd_h_put_32(abfd, aouthdr_in->gprmask, (bfd_byte *) aouthdr_out->gprmask);
+ bfd_h_put_32(abfd, aouthdr_in->cprmask[0], (bfd_byte *) aouthdr_out->cprmask[0]);
+ bfd_h_put_32(abfd, aouthdr_in->cprmask[1], (bfd_byte *) aouthdr_out->cprmask[1]);
+ bfd_h_put_32(abfd, aouthdr_in->cprmask[2], (bfd_byte *) aouthdr_out->cprmask[2]);
+ bfd_h_put_32(abfd, aouthdr_in->cprmask[3], (bfd_byte *) aouthdr_out->cprmask[3]);
+#endif
+
+#ifdef ALPHAECOFF
+ /* FIXME: What does bldrev mean? */
+ bfd_h_put_16(abfd, (bfd_vma) 2, (bfd_byte *) aouthdr_out->bldrev);
+ bfd_h_put_16(abfd, (bfd_vma) 0, (bfd_byte *) aouthdr_out->padding);
+ bfd_h_put_64(abfd, aouthdr_in->bss_start, (bfd_byte *) aouthdr_out->bss_start);
+ bfd_h_put_64(abfd, aouthdr_in->gp_value, (bfd_byte *) aouthdr_out->gp_value);
+ bfd_h_put_32(abfd, aouthdr_in->gprmask, (bfd_byte *) aouthdr_out->gprmask);
+ bfd_h_put_32(abfd, aouthdr_in->fprmask, (bfd_byte *) aouthdr_out->fprmask);
+#endif
+
+ return sizeof(AOUTHDR);
+}
+
+static void
+coff_swap_scnhdr_in (abfd, ext, in)
+ bfd *abfd;
+ PTR ext;
+ PTR in;
+{
+ SCNHDR *scnhdr_ext = (SCNHDR *) ext;
+ struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *) in;
+
+ memcpy(scnhdr_int->s_name, scnhdr_ext->s_name, sizeof(scnhdr_int->s_name));
+ scnhdr_int->s_vaddr =
+ GET_SCNHDR_VADDR (abfd, (bfd_byte *) scnhdr_ext->s_vaddr);
+ scnhdr_int->s_paddr =
+ GET_SCNHDR_PADDR (abfd, (bfd_byte *) scnhdr_ext->s_paddr);
+ scnhdr_int->s_size =
+ GET_SCNHDR_SIZE (abfd, (bfd_byte *) scnhdr_ext->s_size);
+
+ scnhdr_int->s_scnptr =
+ GET_SCNHDR_SCNPTR (abfd, (bfd_byte *) scnhdr_ext->s_scnptr);
+ scnhdr_int->s_relptr =
+ GET_SCNHDR_RELPTR (abfd, (bfd_byte *) scnhdr_ext->s_relptr);
+ scnhdr_int->s_lnnoptr =
+ GET_SCNHDR_LNNOPTR (abfd, (bfd_byte *) scnhdr_ext->s_lnnoptr);
+ scnhdr_int->s_flags = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_flags);
+#if defined(M88)
+ scnhdr_int->s_nreloc = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
+ scnhdr_int->s_nlnno = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
+#else
+ scnhdr_int->s_nreloc = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
+ scnhdr_int->s_nlnno = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
+#endif
+#ifdef I960
+ scnhdr_int->s_align = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_align);
+#endif
+}
+
+static unsigned int
+coff_swap_scnhdr_out (abfd, in, out)
+ bfd *abfd;
+ PTR in;
+ PTR out;
+{
+ struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *)in;
+ SCNHDR *scnhdr_ext = (SCNHDR *)out;
+
+ memcpy(scnhdr_ext->s_name, scnhdr_int->s_name, sizeof(scnhdr_int->s_name));
+ PUT_SCNHDR_VADDR (abfd, scnhdr_int->s_vaddr,
+ (bfd_byte *) scnhdr_ext->s_vaddr);
+ PUT_SCNHDR_PADDR (abfd, scnhdr_int->s_paddr,
+ (bfd_byte *) scnhdr_ext->s_paddr);
+ PUT_SCNHDR_SIZE (abfd, scnhdr_int->s_size,
+ (bfd_byte *) scnhdr_ext->s_size);
+ PUT_SCNHDR_SCNPTR (abfd, scnhdr_int->s_scnptr,
+ (bfd_byte *) scnhdr_ext->s_scnptr);
+ PUT_SCNHDR_RELPTR (abfd, scnhdr_int->s_relptr,
+ (bfd_byte *) scnhdr_ext->s_relptr);
+ PUT_SCNHDR_LNNOPTR (abfd, scnhdr_int->s_lnnoptr,
+ (bfd_byte *) scnhdr_ext->s_lnnoptr);
+ PUTWORD(abfd, scnhdr_int->s_flags, (bfd_byte *) scnhdr_ext->s_flags);
+#if defined(M88)
+ PUTWORD(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
+ PUTWORD(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
+#else
+ PUTHALF(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
+ PUTHALF(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
+#endif
+
+#if defined(I960)
+ PUTWORD(abfd, scnhdr_int->s_align, (bfd_byte *) scnhdr_ext->s_align);
+#endif
+ return sizeof(SCNHDR);
+}
diff --git a/gnu/usr.bin/gdb/bfd/ecofflink.c b/gnu/usr.bin/gdb/bfd/ecofflink.c
new file mode 100644
index 0000000000000..784e87478f60c
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/ecofflink.c
@@ -0,0 +1,1616 @@
+/* Routines to link ECOFF debugging information.
+ Copyright 1993 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "bfdlink.h"
+#include "libbfd.h"
+#include "obstack.h"
+#include "coff/internal.h"
+#include "coff/sym.h"
+#include "coff/symconst.h"
+#include "coff/ecoff.h"
+
+static boolean ecoff_add_bytes PARAMS ((char **buf, char **bufend,
+ size_t need));
+static struct bfd_hash_entry *string_hash_newfunc
+ PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *,
+ const char *));
+static void ecoff_align_debug PARAMS ((bfd *abfd,
+ struct ecoff_debug_info *debug,
+ const struct ecoff_debug_swap *swap));
+static boolean ecoff_write_symhdr PARAMS ((bfd *, struct ecoff_debug_info *,
+ const struct ecoff_debug_swap *,
+ file_ptr where));
+
+/* Obstack allocation and deallocation routines. */
+#define obstack_chunk_alloc malloc
+#define obstack_chunk_free free
+
+/* The minimum amount of data to allocate. */
+#define ALLOC_SIZE (4064)
+
+/* Add bytes to a buffer. Return success. */
+
+static boolean
+ecoff_add_bytes (buf, bufend, need)
+ char **buf;
+ char **bufend;
+ size_t need;
+{
+ size_t have;
+ size_t want;
+ char *newbuf;
+
+ have = *bufend - *buf;
+ if (have > need)
+ want = ALLOC_SIZE;
+ else
+ {
+ want = need - have;
+ if (want < ALLOC_SIZE)
+ want = ALLOC_SIZE;
+ }
+ if (*buf == NULL)
+ newbuf = (char *) malloc (have + want);
+ else
+ newbuf = (char *) realloc (*buf, have + want);
+ if (newbuf == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ *buf = newbuf;
+ *bufend = *buf + have + want;
+ return true;
+}
+
+/* We keep a hash table which maps strings to numbers. We use it to
+ map FDR names to indices in the output file, and to map local
+ strings when combining stabs debugging information. */
+
+struct string_hash_entry
+{
+ struct bfd_hash_entry root;
+ /* FDR index or string table offset. */
+ long val;
+ /* Next entry in string table. */
+ struct string_hash_entry *next;
+};
+
+struct string_hash_table
+{
+ struct bfd_hash_table table;
+};
+
+/* Routine to create an entry in a string hash table. */
+
+static struct bfd_hash_entry *
+string_hash_newfunc (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
+{
+ struct string_hash_entry *ret = (struct string_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == (struct string_hash_entry *) NULL)
+ ret = ((struct string_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct string_hash_entry)));
+ if (ret == (struct string_hash_entry *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct string_hash_entry *)
+ bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
+
+ if (ret)
+ {
+ /* Initialize the local fields. */
+ ret->val = -1;
+ ret->next = NULL;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
+/* Look up an entry in an string hash table. */
+
+#define string_hash_lookup(t, string, create, copy) \
+ ((struct string_hash_entry *) \
+ bfd_hash_lookup (&(t)->table, (string), (create), (copy)))
+
+/* We can't afford to read in all the debugging information when we do
+ a link. Instead, we build a list of these structures to show how
+ different parts of the input file map to the output file. */
+
+struct shuffle
+{
+ /* The next entry in this linked list. */
+ struct shuffle *next;
+ /* The length of the information. */
+ unsigned long size;
+ /* Whether this information comes from a file or not. */
+ boolean filep;
+ union
+ {
+ struct
+ {
+ /* The BFD the data comes from. */
+ bfd *input_bfd;
+ /* The offset within input_bfd. */
+ file_ptr offset;
+ } file;
+ /* The data to be written out. */
+ PTR memory;
+ } u;
+};
+
+/* This structure holds information across calls to
+ bfd_ecoff_debug_accumulate. */
+
+struct accumulate
+{
+ /* The FDR hash table. */
+ struct string_hash_table fdr_hash;
+ /* The strings hash table. */
+ struct string_hash_table str_hash;
+ /* Linked lists describing how to shuffle the input debug
+ information into the output file. We keep a pointer to both the
+ head and the tail. */
+ struct shuffle *line;
+ struct shuffle *line_end;
+ struct shuffle *pdr;
+ struct shuffle *pdr_end;
+ struct shuffle *sym;
+ struct shuffle *sym_end;
+ struct shuffle *opt;
+ struct shuffle *opt_end;
+ struct shuffle *aux;
+ struct shuffle *aux_end;
+ struct shuffle *ss;
+ struct shuffle *ss_end;
+ struct string_hash_entry *ss_hash;
+ struct string_hash_entry *ss_hash_end;
+ struct shuffle *fdr;
+ struct shuffle *fdr_end;
+ struct shuffle *rfd;
+ struct shuffle *rfd_end;
+ /* The size of the largest file shuffle. */
+ unsigned long largest_file_shuffle;
+ /* An obstack for debugging information. */
+ struct obstack memory;
+};
+
+/* Add a file entry to a shuffle list. */
+
+static boolean add_file_shuffle PARAMS ((struct accumulate *,
+ struct shuffle **,
+ struct shuffle **, bfd *, file_ptr,
+ unsigned long));
+
+static boolean
+add_file_shuffle (ainfo, head, tail, input_bfd, offset, size)
+ struct accumulate *ainfo;
+ struct shuffle **head;
+ struct shuffle **tail;
+ bfd *input_bfd;
+ file_ptr offset;
+ unsigned long size;
+{
+ struct shuffle *n;
+
+ if (*tail != (struct shuffle *) NULL
+ && (*tail)->filep
+ && (*tail)->u.file.input_bfd == input_bfd
+ && (*tail)->u.file.offset + (*tail)->size == offset)
+ {
+ /* Just merge this entry onto the existing one. */
+ (*tail)->size += size;
+ if ((*tail)->size > ainfo->largest_file_shuffle)
+ ainfo->largest_file_shuffle = (*tail)->size;
+ return true;
+ }
+
+ n = (struct shuffle *) obstack_alloc (&ainfo->memory,
+ sizeof (struct shuffle));
+ if (!n)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ n->next = NULL;
+ n->size = size;
+ n->filep = true;
+ n->u.file.input_bfd = input_bfd;
+ n->u.file.offset = offset;
+ if (*head == (struct shuffle *) NULL)
+ *head = n;
+ if (*tail != (struct shuffle *) NULL)
+ (*tail)->next = n;
+ *tail = n;
+ if (size > ainfo->largest_file_shuffle)
+ ainfo->largest_file_shuffle = size;
+ return true;
+}
+
+/* Add a memory entry to a shuffle list. */
+
+static boolean add_memory_shuffle PARAMS ((struct accumulate *,
+ struct shuffle **head,
+ struct shuffle **tail,
+ bfd_byte *data, unsigned long size));
+
+static boolean
+add_memory_shuffle (ainfo, head, tail, data, size)
+ struct accumulate *ainfo;
+ struct shuffle **head;
+ struct shuffle **tail;
+ bfd_byte *data;
+ unsigned long size;
+{
+ struct shuffle *n;
+
+ n = (struct shuffle *) obstack_alloc (&ainfo->memory,
+ sizeof (struct shuffle));
+ if (!n)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ n->next = NULL;
+ n->size = size;
+ n->filep = false;
+ n->u.memory = (PTR) data;
+ if (*head == (struct shuffle *) NULL)
+ *head = n;
+ if (*tail != (struct shuffle *) NULL)
+ (*tail)->next = n;
+ *tail = n;
+ return true;
+}
+
+/* Initialize the FDR hash table. This returns a handle which is then
+ passed in to bfd_ecoff_debug_accumulate, et. al. */
+
+/*ARGSUSED*/
+PTR
+bfd_ecoff_debug_init (output_bfd, output_debug, output_swap, info)
+ bfd *output_bfd;
+ struct ecoff_debug_info *output_debug;
+ const struct ecoff_debug_swap *output_swap;
+ struct bfd_link_info *info;
+{
+ struct accumulate *ainfo;
+
+ ainfo = (struct accumulate *) malloc (sizeof (struct accumulate));
+ if (!ainfo)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+ if (! bfd_hash_table_init_n (&ainfo->fdr_hash.table, string_hash_newfunc,
+ 1021))
+ return NULL;
+
+ ainfo->line = NULL;
+ ainfo->line_end = NULL;
+ ainfo->pdr = NULL;
+ ainfo->pdr_end = NULL;
+ ainfo->sym = NULL;
+ ainfo->sym_end = NULL;
+ ainfo->opt = NULL;
+ ainfo->opt_end = NULL;
+ ainfo->aux = NULL;
+ ainfo->aux_end = NULL;
+ ainfo->ss = NULL;
+ ainfo->ss_end = NULL;
+ ainfo->ss_hash = NULL;
+ ainfo->ss_hash_end = NULL;
+ ainfo->fdr = NULL;
+ ainfo->fdr_end = NULL;
+ ainfo->rfd = NULL;
+ ainfo->rfd_end = NULL;
+
+ ainfo->largest_file_shuffle = 0;
+
+ if (! info->relocateable)
+ {
+ if (! bfd_hash_table_init (&ainfo->str_hash.table, string_hash_newfunc))
+ return NULL;
+
+ /* The first entry in the string table is the empty string. */
+ output_debug->symbolic_header.issMax = 1;
+ }
+
+ if (!obstack_begin (&ainfo->memory, 4050))
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ return (PTR) ainfo;
+}
+
+/* Free the accumulated debugging information. */
+
+/*ARGSUSED*/
+void
+bfd_ecoff_debug_free (handle, output_bfd, output_debug, output_swap, info)
+ PTR handle;
+ bfd *output_bfd;
+ struct ecoff_debug_info *output_debug;
+ const struct ecoff_debug_swap *output_swap;
+ struct bfd_link_info *info;
+{
+ struct accumulate *ainfo = (struct accumulate *) handle;
+
+ bfd_hash_table_free (&ainfo->fdr_hash.table);
+
+ if (! info->relocateable)
+ bfd_hash_table_free (&ainfo->str_hash.table);
+
+ obstack_free (&ainfo->memory, (PTR) NULL);
+
+ free (ainfo);
+}
+
+/* Accumulate the debugging information from INPUT_BFD into
+ OUTPUT_BFD. The INPUT_DEBUG argument points to some ECOFF
+ debugging information which we want to link into the information
+ pointed to by the OUTPUT_DEBUG argument. OUTPUT_SWAP and
+ INPUT_SWAP point to the swapping information needed. INFO is the
+ linker information structure. HANDLE is returned by
+ bfd_ecoff_debug_init. */
+
+/*ARGSUSED*/
+boolean
+bfd_ecoff_debug_accumulate (handle, output_bfd, output_debug, output_swap,
+ input_bfd, input_debug, input_swap,
+ info)
+ PTR handle;
+ bfd *output_bfd;
+ struct ecoff_debug_info *output_debug;
+ const struct ecoff_debug_swap *output_swap;
+ bfd *input_bfd;
+ struct ecoff_debug_info *input_debug;
+ const struct ecoff_debug_swap *input_swap;
+ struct bfd_link_info *info;
+{
+ struct accumulate *ainfo = (struct accumulate *) handle;
+ void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
+ = input_swap->swap_sym_in;
+ void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *))
+ = input_swap->swap_rfd_in;
+ void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR))
+ = output_swap->swap_sym_out;
+ void (* const swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR))
+ = output_swap->swap_fdr_out;
+ void (* const swap_rfd_out) PARAMS ((bfd *, const RFDT *, PTR))
+ = output_swap->swap_rfd_out;
+ bfd_size_type external_pdr_size = output_swap->external_pdr_size;
+ bfd_size_type external_sym_size = output_swap->external_sym_size;
+ bfd_size_type external_opt_size = output_swap->external_opt_size;
+ bfd_size_type external_fdr_size = output_swap->external_fdr_size;
+ bfd_size_type external_rfd_size = output_swap->external_rfd_size;
+ HDRR * const output_symhdr = &output_debug->symbolic_header;
+ HDRR * const input_symhdr = &input_debug->symbolic_header;
+ bfd_vma section_adjust[scMax];
+ asection *sec;
+ bfd_byte *fdr_start;
+ bfd_byte *fdr_ptr;
+ bfd_byte *fdr_end;
+ bfd_size_type fdr_add;
+ unsigned int copied;
+ RFDT i;
+ unsigned long sz;
+ bfd_byte *rfd_out;
+ bfd_byte *rfd_in;
+ bfd_byte *rfd_end;
+ long newrfdbase = 0;
+ long oldrfdbase = 0;
+ bfd_byte *fdr_out;
+
+ /* Use section_adjust to hold the value to add to a symbol in a
+ particular section. */
+ memset ((PTR) section_adjust, 0, sizeof section_adjust);
+
+#define SET(name, indx) \
+ sec = bfd_get_section_by_name (input_bfd, name); \
+ if (sec != NULL) \
+ section_adjust[indx] = (sec->output_section->vma \
+ + sec->output_offset \
+ - sec->vma);
+
+ SET (".text", scText);
+ SET (".data", scData);
+ SET (".bss", scBss);
+ SET (".sdata", scSData);
+ SET (".sbss", scSBss);
+ /* scRdata section may be either .rdata or .rodata. */
+ SET (".rdata", scRData);
+ SET (".rodata", scRData);
+ SET (".init", scInit);
+ SET (".fini", scFini);
+
+#undef SET
+
+ /* Find all the debugging information based on the FDR's. We need
+ to handle them whether they are swapped or not. */
+ if (input_debug->fdr != (FDR *) NULL)
+ {
+ fdr_start = (bfd_byte *) input_debug->fdr;
+ fdr_add = sizeof (FDR);
+ }
+ else
+ {
+ fdr_start = (bfd_byte *) input_debug->external_fdr;
+ fdr_add = input_swap->external_fdr_size;
+ }
+ fdr_end = fdr_start + input_symhdr->ifdMax * fdr_add;
+
+ input_debug->ifdmap = (RFDT *) bfd_alloc (input_bfd,
+ (input_symhdr->ifdMax
+ * sizeof (RFDT)));
+
+ sz = (input_symhdr->crfd + input_symhdr->ifdMax) * external_rfd_size;
+ rfd_out = (bfd_byte *) obstack_alloc (&ainfo->memory, sz);
+ if (!input_debug->ifdmap || !rfd_out)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ if (!add_memory_shuffle (ainfo, &ainfo->rfd, &ainfo->rfd_end, rfd_out, sz))
+ return false;
+
+ copied = 0;
+
+ /* Look through the FDR's to see which ones we are going to include
+ in the final output. We do not want duplicate FDR information
+ for header files, because ECOFF debugging is often very large.
+ When we find an FDR with no line information which can be merged,
+ we look it up in a hash table to ensure that we only include it
+ once. We keep a table mapping FDR numbers to the final number
+ they get with the BFD, so that we can refer to it when we write
+ out the external symbols. */
+ for (fdr_ptr = fdr_start, i = 0;
+ fdr_ptr < fdr_end;
+ fdr_ptr += fdr_add, i++, rfd_out += external_rfd_size)
+ {
+ FDR fdr;
+
+ if (input_debug->fdr != (FDR *) NULL)
+ fdr = *(FDR *) fdr_ptr;
+ else
+ (*input_swap->swap_fdr_in) (input_bfd, (PTR) fdr_ptr, &fdr);
+
+ /* See if this FDR can be merged with an existing one. */
+ if (fdr.cbLine == 0 && fdr.rss != -1 && fdr.fMerge)
+ {
+ const char *name;
+ char *lookup;
+ struct string_hash_entry *fh;
+
+ /* We look up a string formed from the file name and the
+ number of symbols. Sometimes an include file will
+ conditionally define a typedef or something based on the
+ order of include files. Using the number of symbols as a
+ hash reduces the chance that we will merge symbol
+ information that should not be merged. */
+ name = input_debug->ss + fdr.issBase + fdr.rss;
+
+ lookup = (char *) malloc (strlen (name) + 20);
+ if (lookup == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ sprintf (lookup, "%s %lx", name, fdr.csym);
+
+ fh = string_hash_lookup (&ainfo->fdr_hash, lookup, true, true);
+ free (lookup);
+ if (fh == (struct string_hash_entry *) NULL)
+ return false;
+
+ if (fh->val != -1)
+ {
+ input_debug->ifdmap[i] = fh->val;
+ (*swap_rfd_out) (output_bfd, input_debug->ifdmap + i,
+ (PTR) rfd_out);
+
+ /* Don't copy this FDR. */
+ continue;
+ }
+
+ fh->val = output_symhdr->ifdMax + copied;
+ }
+
+ input_debug->ifdmap[i] = output_symhdr->ifdMax + copied;
+ (*swap_rfd_out) (output_bfd, input_debug->ifdmap + i, (PTR) rfd_out);
+ ++copied;
+ }
+
+ newrfdbase = output_symhdr->crfd;
+ output_symhdr->crfd += input_symhdr->ifdMax;
+
+ /* Copy over any existing RFD's. RFD's are only created by the
+ linker, so this will only happen for input files which are the
+ result of a partial link. */
+ rfd_in = (bfd_byte *) input_debug->external_rfd;
+ rfd_end = rfd_in + input_symhdr->crfd * input_swap->external_rfd_size;
+ for (;
+ rfd_in < rfd_end;
+ rfd_in += input_swap->external_rfd_size)
+ {
+ RFDT rfd;
+
+ (*swap_rfd_in) (input_bfd, (PTR) rfd_in, &rfd);
+ BFD_ASSERT (rfd >= 0 && rfd < input_symhdr->ifdMax);
+ rfd = input_debug->ifdmap[rfd];
+ (*swap_rfd_out) (output_bfd, &rfd, (PTR) rfd_out);
+ rfd_out += external_rfd_size;
+ }
+
+ oldrfdbase = output_symhdr->crfd;
+ output_symhdr->crfd += input_symhdr->crfd;
+
+ /* Look through the FDR's and copy over all associated debugging
+ information. */
+ sz = copied * external_fdr_size;
+ fdr_out = (bfd_byte *) obstack_alloc (&ainfo->memory, sz);
+ if (!fdr_out)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ if (!add_memory_shuffle (ainfo, &ainfo->fdr, &ainfo->fdr_end, fdr_out, sz))
+ return false;
+ for (fdr_ptr = fdr_start, i = 0;
+ fdr_ptr < fdr_end;
+ fdr_ptr += fdr_add, i++)
+ {
+ FDR fdr;
+ bfd_vma fdr_adr;
+ bfd_byte *sym_out;
+ bfd_byte *lraw_src;
+ bfd_byte *lraw_end;
+ boolean fgotfilename;
+
+ if (input_debug->ifdmap[i] < output_symhdr->ifdMax)
+ {
+ /* We are not copying this FDR. */
+ continue;
+ }
+
+ if (input_debug->fdr != (FDR *) NULL)
+ fdr = *(FDR *) fdr_ptr;
+ else
+ (*input_swap->swap_fdr_in) (input_bfd, (PTR) fdr_ptr, &fdr);
+
+ fdr_adr = fdr.adr;
+
+ /* Adjust the FDR address for any changes that may have been
+ made by relaxing. */
+ if (input_debug->adjust != (struct ecoff_value_adjust *) NULL)
+ {
+ struct ecoff_value_adjust *adjust;
+
+ for (adjust = input_debug->adjust;
+ adjust != (struct ecoff_value_adjust *) NULL;
+ adjust = adjust->next)
+ if (fdr_adr >= adjust->start
+ && fdr_adr < adjust->end)
+ fdr.adr += adjust->adjust;
+ }
+
+ /* FIXME: It is conceivable that this FDR points to the .init or
+ .fini section, in which case this will not do the right
+ thing. */
+ fdr.adr += section_adjust[scText];
+
+ /* Swap in the local symbols, adjust their values, and swap them
+ out again. */
+ fgotfilename = false;
+ sz = fdr.csym * external_sym_size;
+ sym_out = (bfd_byte *) obstack_alloc (&ainfo->memory, sz);
+ if (!sym_out)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ if (!add_memory_shuffle (ainfo, &ainfo->sym, &ainfo->sym_end, sym_out,
+ sz))
+ return false;
+ lraw_src = ((bfd_byte *) input_debug->external_sym
+ + fdr.isymBase * input_swap->external_sym_size);
+ lraw_end = lraw_src + fdr.csym * input_swap->external_sym_size;
+ for (; lraw_src < lraw_end; lraw_src += input_swap->external_sym_size)
+ {
+ SYMR internal_sym;
+
+ (*swap_sym_in) (input_bfd, (PTR) lraw_src, &internal_sym);
+
+ BFD_ASSERT (internal_sym.sc != scCommon
+ && internal_sym.sc != scSCommon);
+
+ /* Adjust the symbol value if appropriate. */
+ switch (internal_sym.st)
+ {
+ case stNil:
+ if (ECOFF_IS_STAB (&internal_sym))
+ break;
+ /* Fall through. */
+ case stGlobal:
+ case stStatic:
+ case stLabel:
+ case stProc:
+ case stStaticProc:
+ if (input_debug->adjust != (struct ecoff_value_adjust *) NULL)
+ {
+ bfd_vma value;
+ struct ecoff_value_adjust *adjust;
+
+ value = internal_sym.value;
+ for (adjust = input_debug->adjust;
+ adjust != (struct ecoff_value_adjust *) NULL;
+ adjust = adjust->next)
+ if (value >= adjust->start
+ && value < adjust->end)
+ internal_sym.value += adjust->adjust;
+ }
+ internal_sym.value += section_adjust[internal_sym.sc];
+ break;
+
+ default:
+ break;
+ }
+
+ /* If we are doing a final link, we hash all the strings in
+ the local symbol table together. This reduces the amount
+ of space required by debugging information. We don't do
+ this when performing a relocateable link because it would
+ prevent us from easily merging different FDR's. */
+ if (! info->relocateable)
+ {
+ boolean ffilename;
+ const char *name;
+
+ if (! fgotfilename && internal_sym.iss == fdr.rss)
+ ffilename = true;
+ else
+ ffilename = false;
+
+ /* Hash the name into the string table. */
+ name = input_debug->ss + fdr.issBase + internal_sym.iss;
+ if (*name == '\0')
+ internal_sym.iss = 0;
+ else
+ {
+ struct string_hash_entry *sh;
+
+ sh = string_hash_lookup (&ainfo->str_hash, name, true, true);
+ if (sh == (struct string_hash_entry *) NULL)
+ return false;
+ if (sh->val == -1)
+ {
+ sh->val = output_symhdr->issMax;
+ output_symhdr->issMax += strlen (name) + 1;
+ if (ainfo->ss_hash == (struct string_hash_entry *) NULL)
+ ainfo->ss_hash = sh;
+ if (ainfo->ss_hash_end
+ != (struct string_hash_entry *) NULL)
+ ainfo->ss_hash_end->next = sh;
+ ainfo->ss_hash_end = sh;
+ }
+ internal_sym.iss = sh->val;
+ }
+
+ if (ffilename)
+ {
+ fdr.rss = internal_sym.iss;
+ fgotfilename = true;
+ }
+ }
+
+ (*swap_sym_out) (output_bfd, &internal_sym, sym_out);
+ sym_out += external_sym_size;
+ }
+
+ fdr.isymBase = output_symhdr->isymMax;
+ output_symhdr->isymMax += fdr.csym;
+
+ /* Copy the information that does not need swapping. */
+
+ /* FIXME: If we are relaxing, we need to adjust the line
+ numbers. Frankly, forget it. Anybody using stabs debugging
+ information will not use this line number information, and
+ stabs are adjusted correctly. */
+ if (fdr.cbLine > 0)
+ {
+ if (!add_file_shuffle (ainfo, &ainfo->line, &ainfo->line_end,
+ input_bfd,
+ input_symhdr->cbLineOffset + fdr.cbLineOffset,
+ fdr.cbLine))
+ return false;
+ fdr.ilineBase = output_symhdr->ilineMax;
+ fdr.cbLineOffset = output_symhdr->cbLine;
+ output_symhdr->ilineMax += fdr.cline;
+ output_symhdr->cbLine += fdr.cbLine;
+ }
+ if (fdr.caux > 0)
+ {
+ if (!add_file_shuffle (ainfo, &ainfo->aux, &ainfo->aux_end,
+ input_bfd,
+ (input_symhdr->cbAuxOffset
+ + fdr.iauxBase * sizeof (union aux_ext)),
+ fdr.caux * sizeof (union aux_ext)))
+ return false;
+ fdr.iauxBase = output_symhdr->iauxMax;
+ output_symhdr->iauxMax += fdr.caux;
+ }
+ if (! info->relocateable)
+ {
+
+ /* When are are hashing strings, we lie about the number of
+ strings attached to each FDR. We need to set cbSs
+ because some versions of dbx apparently use it to decide
+ how much of the string table to read in. */
+ fdr.issBase = 0;
+ fdr.cbSs = output_symhdr->issMax;
+ }
+ else if (fdr.cbSs > 0)
+ {
+ if (!add_file_shuffle (ainfo, &ainfo->ss, &ainfo->ss_end,
+ input_bfd,
+ input_symhdr->cbSsOffset + fdr.issBase,
+ fdr.cbSs))
+ return false;
+ fdr.issBase = output_symhdr->issMax;
+ output_symhdr->issMax += fdr.cbSs;
+ }
+
+ if ((output_bfd->xvec->header_byteorder_big_p
+ == input_bfd->xvec->header_byteorder_big_p)
+ && input_debug->adjust == (struct ecoff_value_adjust *) NULL)
+ {
+ /* The two BFD's have the same endianness, and we don't have
+ to adjust the PDR addresses, so simply copying the
+ information will suffice. */
+ BFD_ASSERT (external_pdr_size == input_swap->external_pdr_size);
+ if (fdr.cpd > 0)
+ {
+ if (!add_file_shuffle (ainfo, &ainfo->pdr, &ainfo->pdr_end,
+ input_bfd,
+ (input_symhdr->cbPdOffset
+ + fdr.ipdFirst * external_pdr_size),
+ fdr.cpd * external_pdr_size))
+ return false;
+ }
+ BFD_ASSERT (external_opt_size == input_swap->external_opt_size);
+ if (fdr.copt > 0)
+ {
+ if (!add_file_shuffle (ainfo, &ainfo->opt, &ainfo->opt_end,
+ input_bfd,
+ (input_symhdr->cbOptOffset
+ + fdr.ioptBase * external_opt_size),
+ fdr.copt * external_opt_size))
+ return false;
+ }
+ }
+ else
+ {
+ bfd_size_type outsz, insz;
+ bfd_byte *in;
+ bfd_byte *end;
+ bfd_byte *out;
+
+ /* The two BFD's have different endianness, so we must swap
+ everything in and out. This code would always work, but
+ it would be unnecessarily slow in the normal case. */
+ outsz = external_pdr_size;
+ insz = input_swap->external_pdr_size;
+ in = ((bfd_byte *) input_debug->external_pdr
+ + fdr.ipdFirst * insz);
+ end = in + fdr.cpd * insz;
+ sz = fdr.cpd * outsz;
+ out = (bfd_byte *) obstack_alloc (&ainfo->memory, sz);
+ if (!out)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ if (!add_memory_shuffle (ainfo, &ainfo->pdr, &ainfo->pdr_end, out,
+ sz))
+ return false;
+ for (; in < end; in += insz, out += outsz)
+ {
+ PDR pdr;
+
+ (*input_swap->swap_pdr_in) (input_bfd, (PTR) in, &pdr);
+
+ /* If we have been relaxing, we may have to adjust the
+ address. */
+ if (input_debug->adjust != (struct ecoff_value_adjust *) NULL)
+ {
+ bfd_vma adr;
+ struct ecoff_value_adjust *adjust;
+
+ adr = fdr_adr + pdr.adr;
+ for (adjust = input_debug->adjust;
+ adjust != (struct ecoff_value_adjust *) NULL;
+ adjust = adjust->next)
+ if (adr >= adjust->start
+ && adr < adjust->end)
+ pdr.adr += adjust->adjust;
+ }
+
+ (*output_swap->swap_pdr_out) (output_bfd, &pdr, (PTR) out);
+ }
+
+ /* Swap over the optimization information. */
+ outsz = external_opt_size;
+ insz = input_swap->external_opt_size;
+ in = ((bfd_byte *) input_debug->external_opt
+ + fdr.ioptBase * insz);
+ end = in + fdr.copt * insz;
+ sz = fdr.copt * outsz;
+ out = (bfd_byte *) obstack_alloc (&ainfo->memory, sz);
+ if (!out)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ if (!add_memory_shuffle (ainfo, &ainfo->opt, &ainfo->opt_end, out,
+ sz))
+ return false;
+ for (; in < end; in += insz, out += outsz)
+ {
+ OPTR opt;
+
+ (*input_swap->swap_opt_in) (input_bfd, (PTR) in, &opt);
+ (*output_swap->swap_opt_out) (output_bfd, &opt, (PTR) out);
+ }
+ }
+
+ fdr.ipdFirst = output_symhdr->ipdMax;
+ output_symhdr->ipdMax += fdr.cpd;
+ fdr.ioptBase = output_symhdr->ioptMax;
+ output_symhdr->ioptMax += fdr.copt;
+
+ if (fdr.crfd <= 0)
+ {
+ /* Point this FDR at the table of RFD's we created. */
+ fdr.rfdBase = newrfdbase;
+ fdr.crfd = input_symhdr->ifdMax;
+ }
+ else
+ {
+ /* Point this FDR at the remapped RFD's. */
+ fdr.rfdBase += oldrfdbase;
+ }
+
+ (*swap_fdr_out) (output_bfd, &fdr, fdr_out);
+ fdr_out += external_fdr_size;
+ ++output_symhdr->ifdMax;
+ }
+
+ return true;
+}
+
+/* Add a string to the debugging information we are accumulating.
+ Return the offset from the fdr string base. */
+
+static long ecoff_add_string PARAMS ((struct accumulate *,
+ struct bfd_link_info *,
+ struct ecoff_debug_info *,
+ FDR *fdr, const char *string));
+
+static long
+ecoff_add_string (ainfo, info, debug, fdr, string)
+ struct accumulate *ainfo;
+ struct bfd_link_info *info;
+ struct ecoff_debug_info *debug;
+ FDR *fdr;
+ const char *string;
+{
+ HDRR *symhdr;
+ size_t len;
+ bfd_size_type ret;
+
+ symhdr = &debug->symbolic_header;
+ len = strlen (string);
+ if (info->relocateable)
+ {
+ if (!add_memory_shuffle (ainfo, &ainfo->ss, &ainfo->ss_end, (PTR) string,
+ len + 1))
+ return -1;
+ ret = symhdr->issMax;
+ symhdr->issMax += len + 1;
+ fdr->cbSs += len + 1;
+ }
+ else
+ {
+ struct string_hash_entry *sh;
+
+ sh = string_hash_lookup (&ainfo->str_hash, string, true, true);
+ if (sh == (struct string_hash_entry *) NULL)
+ return -1;
+ if (sh->val == -1)
+ {
+ sh->val = symhdr->issMax;
+ symhdr->issMax += len + 1;
+ if (ainfo->ss_hash == (struct string_hash_entry *) NULL)
+ ainfo->ss_hash = sh;
+ if (ainfo->ss_hash_end
+ != (struct string_hash_entry *) NULL)
+ ainfo->ss_hash_end->next = sh;
+ ainfo->ss_hash_end = sh;
+ }
+ ret = sh->val;
+ }
+
+ return ret;
+}
+
+/* Add debugging information from a non-ECOFF file. */
+
+boolean
+bfd_ecoff_debug_accumulate_other (handle, output_bfd, output_debug,
+ output_swap, input_bfd, info)
+ PTR handle;
+ bfd *output_bfd;
+ struct ecoff_debug_info *output_debug;
+ const struct ecoff_debug_swap *output_swap;
+ bfd *input_bfd;
+ struct bfd_link_info *info;
+{
+ struct accumulate *ainfo = (struct accumulate *) handle;
+ void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR))
+ = output_swap->swap_sym_out;
+ HDRR *output_symhdr = &output_debug->symbolic_header;
+ FDR fdr;
+ asection *sec;
+ asymbol **symbols;
+ asymbol **sym_ptr;
+ asymbol **sym_end;
+ long symsize;
+ long symcount;
+ PTR external_fdr;
+
+ memset ((PTR) &fdr, 0, sizeof fdr);
+
+ sec = bfd_get_section_by_name (input_bfd, ".text");
+ if (sec != NULL)
+ fdr.adr = sec->output_section->vma + sec->output_offset;
+ else
+ {
+ /* FIXME: What about .init or .fini? */
+ fdr.adr = 0;
+ }
+
+ fdr.issBase = output_symhdr->issMax;
+ fdr.cbSs = 0;
+ fdr.rss = ecoff_add_string (ainfo, info, output_debug, &fdr,
+ bfd_get_filename (input_bfd));
+ if (fdr.rss == -1)
+ return false;
+ fdr.isymBase = output_symhdr->isymMax;
+
+ /* Get the local symbols from the input BFD. */
+ symsize = bfd_get_symtab_upper_bound (input_bfd);
+ if (symsize < 0)
+ return false;
+ symbols = (asymbol **) bfd_alloc (output_bfd, symsize);
+ if (symbols == (asymbol **) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ symcount = bfd_canonicalize_symtab (input_bfd, symbols);
+ if (symcount < 0)
+ return false;
+ sym_end = symbols + symcount;
+
+ /* Handle the local symbols. Any external symbols are handled
+ separately. */
+ fdr.csym = 0;
+ for (sym_ptr = symbols; sym_ptr != sym_end; sym_ptr++)
+ {
+ SYMR internal_sym;
+ PTR external_sym;
+
+ if (((*sym_ptr)->flags & BSF_EXPORT) != 0)
+ continue;
+ memset ((PTR) &internal_sym, 0, sizeof internal_sym);
+ internal_sym.iss = ecoff_add_string (ainfo, info, output_debug, &fdr,
+ (*sym_ptr)->name);
+
+ if (internal_sym.iss == -1)
+ return false;
+ if (bfd_is_com_section ((*sym_ptr)->section)
+ || bfd_is_und_section ((*sym_ptr)->section))
+ internal_sym.value = (*sym_ptr)->value;
+ else
+ internal_sym.value = ((*sym_ptr)->value
+ + (*sym_ptr)->section->output_offset
+ + (*sym_ptr)->section->output_section->vma);
+ internal_sym.st = stNil;
+ internal_sym.sc = scUndefined;
+ internal_sym.index = indexNil;
+
+ external_sym = (PTR) obstack_alloc (&ainfo->memory,
+ output_swap->external_sym_size);
+ if (!external_sym)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ (*swap_sym_out) (output_bfd, &internal_sym, external_sym);
+ add_memory_shuffle (ainfo, &ainfo->sym, &ainfo->sym_end,
+ external_sym, output_swap->external_sym_size);
+ ++fdr.csym;
+ ++output_symhdr->isymMax;
+ }
+
+ bfd_release (output_bfd, (PTR) symbols);
+
+ /* Leave everything else in the FDR zeroed out. This will cause
+ the lang field to be langC. The fBigendian field will
+ indicate little endian format, but it doesn't matter because
+ it only applies to aux fields and there are none. */
+ external_fdr = (PTR) obstack_alloc (&ainfo->memory,
+ output_swap->external_fdr_size);
+ if (!external_fdr)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ (*output_swap->swap_fdr_out) (output_bfd, &fdr, external_fdr);
+ add_memory_shuffle (ainfo, &ainfo->fdr, &ainfo->fdr_end,
+ external_fdr, output_swap->external_fdr_size);
+
+ ++output_symhdr->ifdMax;
+
+ return true;
+}
+
+/* Set up ECOFF debugging information for the external symbols.
+ FIXME: This is done using a memory buffer, but it should be
+ probably be changed to use a shuffle structure. The assembler uses
+ this interface, so that must be changed to do something else. */
+
+boolean
+bfd_ecoff_debug_externals (abfd, debug, swap, relocateable, get_extr,
+ set_index)
+ bfd *abfd;
+ struct ecoff_debug_info *debug;
+ const struct ecoff_debug_swap *swap;
+ boolean relocateable;
+ boolean (*get_extr) PARAMS ((asymbol *, EXTR *));
+ void (*set_index) PARAMS ((asymbol *, bfd_size_type));
+{
+ HDRR * const symhdr = &debug->symbolic_header;
+ asymbol **sym_ptr_ptr;
+ size_t c;
+
+ sym_ptr_ptr = bfd_get_outsymbols (abfd);
+ if (sym_ptr_ptr == NULL)
+ return true;
+
+ for (c = bfd_get_symcount (abfd); c > 0; c--, sym_ptr_ptr++)
+ {
+ asymbol *sym_ptr;
+ EXTR esym;
+
+ sym_ptr = *sym_ptr_ptr;
+
+ /* Get the external symbol information. */
+ if ((*get_extr) (sym_ptr, &esym) == false)
+ continue;
+
+ /* If we're producing an executable, move common symbols into
+ bss. */
+ if (relocateable == false)
+ {
+ if (esym.asym.sc == scCommon)
+ esym.asym.sc = scBss;
+ else if (esym.asym.sc == scSCommon)
+ esym.asym.sc = scSBss;
+ }
+
+ if (bfd_is_com_section (sym_ptr->section)
+ || bfd_is_und_section (sym_ptr->section)
+ || sym_ptr->section->output_section == (asection *) NULL)
+ {
+ /* FIXME: gas does not keep the value of a small undefined
+ symbol in the symbol itself, because of relocation
+ problems. */
+ if (esym.asym.sc != scSUndefined
+ || esym.asym.value == 0
+ || sym_ptr->value != 0)
+ esym.asym.value = sym_ptr->value;
+ }
+ else
+ esym.asym.value = (sym_ptr->value
+ + sym_ptr->section->output_offset
+ + sym_ptr->section->output_section->vma);
+
+ if (set_index)
+ (*set_index) (sym_ptr, (bfd_size_type) symhdr->iextMax);
+
+ if (! bfd_ecoff_debug_one_external (abfd, debug, swap,
+ sym_ptr->name, &esym))
+ return false;
+ }
+
+ return true;
+}
+
+/* Add a single external symbol to the debugging information. */
+
+boolean
+bfd_ecoff_debug_one_external (abfd, debug, swap, name, esym)
+ bfd *abfd;
+ struct ecoff_debug_info *debug;
+ const struct ecoff_debug_swap *swap;
+ const char *name;
+ EXTR *esym;
+{
+ const bfd_size_type external_ext_size = swap->external_ext_size;
+ void (* const swap_ext_out) PARAMS ((bfd *, const EXTR *, PTR))
+ = swap->swap_ext_out;
+ HDRR * const symhdr = &debug->symbolic_header;
+ size_t namelen;
+
+ namelen = strlen (name);
+
+ if (debug->ssext_end - debug->ssext
+ < symhdr->issExtMax + namelen + 1)
+ {
+ if (ecoff_add_bytes ((char **) &debug->ssext,
+ (char **) &debug->ssext_end,
+ symhdr->issExtMax + namelen + 1)
+ == false)
+ return false;
+ }
+ if ((char *) debug->external_ext_end - (char *) debug->external_ext
+ < (symhdr->iextMax + 1) * external_ext_size)
+ {
+ if (ecoff_add_bytes ((char **) &debug->external_ext,
+ (char **) &debug->external_ext_end,
+ (symhdr->iextMax + 1) * external_ext_size)
+ == false)
+ return false;
+ }
+
+ esym->asym.iss = symhdr->issExtMax;
+
+ (*swap_ext_out) (abfd, esym,
+ ((char *) debug->external_ext
+ + symhdr->iextMax * swap->external_ext_size));
+
+ ++symhdr->iextMax;
+
+ strcpy (debug->ssext + symhdr->issExtMax, name);
+ symhdr->issExtMax += namelen + 1;
+
+ return true;
+}
+
+/* Align the ECOFF debugging information. */
+
+/*ARGSUSED*/
+static void
+ecoff_align_debug (abfd, debug, swap)
+ bfd *abfd;
+ struct ecoff_debug_info *debug;
+ const struct ecoff_debug_swap *swap;
+{
+ HDRR * const symhdr = &debug->symbolic_header;
+ bfd_size_type debug_align, aux_align, rfd_align;
+ size_t add;
+
+ /* Adjust the counts so that structures are aligned. */
+ debug_align = swap->debug_align;
+ aux_align = debug_align / sizeof (union aux_ext);
+ rfd_align = debug_align / swap->external_rfd_size;
+
+ add = debug_align - (symhdr->cbLine & (debug_align - 1));
+ if (add != debug_align)
+ {
+ if (debug->line != (unsigned char *) NULL)
+ memset ((PTR) (debug->line + symhdr->cbLine), 0, add);
+ symhdr->cbLine += add;
+ }
+
+ add = debug_align - (symhdr->issMax & (debug_align - 1));
+ if (add != debug_align)
+ {
+ if (debug->ss != (char *) NULL)
+ memset ((PTR) (debug->ss + symhdr->issMax), 0, add);
+ symhdr->issMax += add;
+ }
+
+ add = debug_align - (symhdr->issExtMax & (debug_align - 1));
+ if (add != debug_align)
+ {
+ if (debug->ssext != (char *) NULL)
+ memset ((PTR) (debug->ssext + symhdr->issExtMax), 0, add);
+ symhdr->issExtMax += add;
+ }
+
+ add = aux_align - (symhdr->iauxMax & (aux_align - 1));
+ if (add != aux_align)
+ {
+ if (debug->external_aux != (union aux_ext *) NULL)
+ memset ((PTR) (debug->external_aux + symhdr->iauxMax), 0,
+ add * sizeof (union aux_ext));
+ symhdr->iauxMax += add;
+ }
+
+ add = rfd_align - (symhdr->crfd & (rfd_align - 1));
+ if (add != rfd_align)
+ {
+ if (debug->external_rfd != (PTR) NULL)
+ memset ((PTR) ((char *) debug->external_rfd
+ + symhdr->crfd * swap->external_rfd_size),
+ 0, add * swap->external_rfd_size);
+ symhdr->crfd += add;
+ }
+}
+
+/* Return the size required by the ECOFF debugging information. */
+
+bfd_size_type
+bfd_ecoff_debug_size (abfd, debug, swap)
+ bfd *abfd;
+ struct ecoff_debug_info *debug;
+ const struct ecoff_debug_swap *swap;
+{
+ bfd_size_type tot;
+
+ ecoff_align_debug (abfd, debug, swap);
+ tot = swap->external_hdr_size;
+
+#define ADD(count, size) \
+ tot += debug->symbolic_header.count * size
+
+ ADD (cbLine, sizeof (unsigned char));
+ ADD (idnMax, swap->external_dnr_size);
+ ADD (ipdMax, swap->external_pdr_size);
+ ADD (isymMax, swap->external_sym_size);
+ ADD (ioptMax, swap->external_opt_size);
+ ADD (iauxMax, sizeof (union aux_ext));
+ ADD (issMax, sizeof (char));
+ ADD (issExtMax, sizeof (char));
+ ADD (ifdMax, swap->external_fdr_size);
+ ADD (crfd, swap->external_rfd_size);
+ ADD (iextMax, swap->external_ext_size);
+
+#undef ADD
+
+ return tot;
+}
+
+/* Write out the ECOFF symbolic header, given the file position it is
+ going to be placed at. This assumes that the counts are set
+ correctly. */
+
+static boolean
+ecoff_write_symhdr (abfd, debug, swap, where)
+ bfd *abfd;
+ struct ecoff_debug_info *debug;
+ const struct ecoff_debug_swap *swap;
+ file_ptr where;
+{
+ HDRR * const symhdr = &debug->symbolic_header;
+ char *buff = NULL;
+
+ ecoff_align_debug (abfd, debug, swap);
+
+ /* Go to the right location in the file. */
+ if (bfd_seek (abfd, where, SEEK_SET) != 0)
+ return false;
+
+ where += swap->external_hdr_size;
+
+ symhdr->magic = swap->sym_magic;
+
+ /* Fill in the file offsets. */
+#define SET(offset, count, size) \
+ if (symhdr->count == 0) \
+ symhdr->offset = 0; \
+ else \
+ { \
+ symhdr->offset = where; \
+ where += symhdr->count * size; \
+ }
+
+ SET (cbLineOffset, cbLine, sizeof (unsigned char));
+ SET (cbDnOffset, idnMax, swap->external_dnr_size);
+ SET (cbPdOffset, ipdMax, swap->external_pdr_size);
+ SET (cbSymOffset, isymMax, swap->external_sym_size);
+ SET (cbOptOffset, ioptMax, swap->external_opt_size);
+ SET (cbAuxOffset, iauxMax, sizeof (union aux_ext));
+ SET (cbSsOffset, issMax, sizeof (char));
+ SET (cbSsExtOffset, issExtMax, sizeof (char));
+ SET (cbFdOffset, ifdMax, swap->external_fdr_size);
+ SET (cbRfdOffset, crfd, swap->external_rfd_size);
+ SET (cbExtOffset, iextMax, swap->external_ext_size);
+#undef SET
+
+ buff = (PTR) malloc (swap->external_hdr_size);
+ if (buff == NULL && swap->external_hdr_size != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ (*swap->swap_hdr_out) (abfd, symhdr, buff);
+ if (bfd_write (buff, 1, swap->external_hdr_size, abfd)
+ != swap->external_hdr_size)
+ goto error_return;
+
+ if (buff != NULL)
+ free (buff);
+ return true;
+ error_return:
+ if (buff != NULL)
+ free (buff);
+ return false;
+}
+
+/* Write out the ECOFF debugging information. This function assumes
+ that the information (the pointers and counts) in *DEBUG have been
+ set correctly. WHERE is the position in the file to write the
+ information to. This function fills in the file offsets in the
+ symbolic header. */
+
+boolean
+bfd_ecoff_write_debug (abfd, debug, swap, where)
+ bfd *abfd;
+ struct ecoff_debug_info *debug;
+ const struct ecoff_debug_swap *swap;
+ file_ptr where;
+{
+ HDRR * const symhdr = &debug->symbolic_header;
+
+ if (! ecoff_write_symhdr (abfd, debug, swap, where))
+ return false;
+
+#define WRITE(ptr, count, size, offset) \
+ BFD_ASSERT (symhdr->offset == 0 || bfd_tell (abfd) == symhdr->offset); \
+ if (bfd_write ((PTR) debug->ptr, size, symhdr->count, abfd) \
+ != size * symhdr->count) \
+ return false;
+
+ WRITE (line, cbLine, sizeof (unsigned char), cbLineOffset);
+ WRITE (external_dnr, idnMax, swap->external_dnr_size, cbDnOffset);
+ WRITE (external_pdr, ipdMax, swap->external_pdr_size, cbPdOffset);
+ WRITE (external_sym, isymMax, swap->external_sym_size, cbSymOffset);
+ WRITE (external_opt, ioptMax, swap->external_opt_size, cbOptOffset);
+ WRITE (external_aux, iauxMax, sizeof (union aux_ext), cbAuxOffset);
+ WRITE (ss, issMax, sizeof (char), cbSsOffset);
+ WRITE (ssext, issExtMax, sizeof (char), cbSsExtOffset);
+ WRITE (external_fdr, ifdMax, swap->external_fdr_size, cbFdOffset);
+ WRITE (external_rfd, crfd, swap->external_rfd_size, cbRfdOffset);
+ WRITE (external_ext, iextMax, swap->external_ext_size, cbExtOffset);
+#undef WRITE
+
+ return true;
+}
+
+/* Write out a shuffle list. */
+
+static boolean ecoff_write_shuffle PARAMS ((bfd *,
+ const struct ecoff_debug_swap *,
+ struct shuffle *, PTR space));
+
+static boolean
+ecoff_write_shuffle (abfd, swap, shuffle, space)
+ bfd *abfd;
+ const struct ecoff_debug_swap *swap;
+ struct shuffle *shuffle;
+ PTR space;
+{
+ register struct shuffle *l;
+ unsigned long total;
+
+ total = 0;
+ for (l = shuffle; l != (struct shuffle *) NULL; l = l->next)
+ {
+ if (! l->filep)
+ {
+ if (bfd_write (l->u.memory, 1, l->size, abfd) != l->size)
+ return false;
+ }
+ else
+ {
+ if (bfd_seek (l->u.file.input_bfd, l->u.file.offset, SEEK_SET) != 0
+ || bfd_read (space, 1, l->size, l->u.file.input_bfd) != l->size
+ || bfd_write (space, 1, l->size, abfd) != l->size)
+ return false;
+ }
+ total += l->size;
+ }
+
+ if ((total & (swap->debug_align - 1)) != 0)
+ {
+ int i;
+ bfd_byte *s;
+
+ i = swap->debug_align - (total & (swap->debug_align - 1));
+ s = (bfd_byte *) malloc (i);
+ if (s == NULL && i != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ memset ((PTR) s, 0, i);
+ if (bfd_write ((PTR) s, 1, i, abfd) != i)
+ {
+ free (s);
+ return false;
+ }
+ free (s);
+ }
+
+ return true;
+}
+
+/* Write out debugging information using accumulated linker
+ information. */
+
+boolean
+bfd_ecoff_write_accumulated_debug (handle, abfd, debug, swap, info, where)
+ PTR handle;
+ bfd *abfd;
+ struct ecoff_debug_info *debug;
+ const struct ecoff_debug_swap *swap;
+ struct bfd_link_info *info;
+ file_ptr where;
+{
+ struct accumulate *ainfo = (struct accumulate *) handle;
+ PTR space = NULL;
+
+ if (! ecoff_write_symhdr (abfd, debug, swap, where))
+ goto error_return;
+
+ space = (PTR) malloc (ainfo->largest_file_shuffle);
+ if (space == NULL && ainfo->largest_file_shuffle != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ if (! ecoff_write_shuffle (abfd, swap, ainfo->line, space)
+ || ! ecoff_write_shuffle (abfd, swap, ainfo->pdr, space)
+ || ! ecoff_write_shuffle (abfd, swap, ainfo->sym, space)
+ || ! ecoff_write_shuffle (abfd, swap, ainfo->opt, space)
+ || ! ecoff_write_shuffle (abfd, swap, ainfo->aux, space))
+ goto error_return;
+
+ /* The string table is written out from the hash table if this is a
+ final link. */
+ if (info->relocateable)
+ {
+ BFD_ASSERT (ainfo->ss_hash == (struct string_hash_entry *) NULL);
+ if (! ecoff_write_shuffle (abfd, swap, ainfo->ss, space))
+ goto error_return;
+ }
+ else
+ {
+ unsigned long total;
+ bfd_byte null;
+ struct string_hash_entry *sh;
+
+ BFD_ASSERT (ainfo->ss == (struct shuffle *) NULL);
+ null = 0;
+ if (bfd_write ((PTR) &null, 1, 1, abfd) != 1)
+ goto error_return;
+ total = 1;
+ BFD_ASSERT (ainfo->ss_hash == NULL || ainfo->ss_hash->val == 1);
+ for (sh = ainfo->ss_hash;
+ sh != (struct string_hash_entry *) NULL;
+ sh = sh->next)
+ {
+ size_t len;
+
+ len = strlen (sh->root.string);
+ if (bfd_write ((PTR) sh->root.string, 1, len + 1, abfd) != len + 1)
+ goto error_return;
+ total += len + 1;
+ }
+
+ if ((total & (swap->debug_align - 1)) != 0)
+ {
+ int i;
+ bfd_byte *s;
+
+ i = swap->debug_align - (total & (swap->debug_align - 1));
+ s = (bfd_byte *) malloc (i);
+ if (s == NULL && i != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ memset ((PTR) s, 0, i);
+ if (bfd_write ((PTR) s, 1, i, abfd) != i)
+ {
+ free (s);
+ goto error_return;
+ }
+ free (s);
+ }
+ }
+
+ /* The external strings and symbol are not converted over to using
+ shuffles. FIXME: They probably should be. */
+ if (bfd_write (debug->ssext, 1, debug->symbolic_header.issExtMax, abfd)
+ != debug->symbolic_header.issExtMax)
+ goto error_return;
+ if ((debug->symbolic_header.issExtMax & (swap->debug_align - 1)) != 0)
+ {
+ int i;
+ bfd_byte *s;
+
+ i = (swap->debug_align
+ - (debug->symbolic_header.issExtMax & (swap->debug_align - 1)));
+ s = (bfd_byte *) malloc (i);
+ if (s == NULL && i != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ memset ((PTR) s, 0, i);
+ if (bfd_write ((PTR) s, 1, i, abfd) != i)
+ {
+ free (s);
+ goto error_return;
+ }
+ free (s);
+ }
+
+ if (! ecoff_write_shuffle (abfd, swap, ainfo->fdr, space)
+ || ! ecoff_write_shuffle (abfd, swap, ainfo->rfd, space))
+ goto error_return;
+
+ BFD_ASSERT (debug->symbolic_header.cbExtOffset == 0
+ || debug->symbolic_header.cbExtOffset == bfd_tell (abfd));
+
+ if (bfd_write (debug->external_ext, swap->external_ext_size,
+ debug->symbolic_header.iextMax, abfd)
+ != debug->symbolic_header.iextMax * swap->external_ext_size)
+ goto error_return;
+
+ if (space != NULL)
+ free (space);
+ return true;
+
+ error_return:
+ if (space != NULL)
+ free (space);
+ return false;
+}
diff --git a/gnu/usr.bin/gdb/bfd/elf32-i386.c b/gnu/usr.bin/gdb/bfd/elf32-i386.c
new file mode 100644
index 0000000000000..d2b1ebacf9f70
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/elf32-i386.c
@@ -0,0 +1,931 @@
+/* Intel 80386/80486-specific support for 32-bit ELF
+ Copyright 1993 Free Software Foundation, Inc.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "bfdlink.h"
+#include "libbfd.h"
+#include "libelf.h"
+
+static CONST struct reloc_howto_struct *elf_i386_reloc_type_lookup
+ PARAMS ((bfd *, bfd_reloc_code_real_type));
+static void elf_i386_info_to_howto
+ PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
+static void elf_i386_info_to_howto_rel
+ PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
+static boolean elf_i386_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean elf_i386_adjust_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
+static boolean elf_i386_allocate_dynamic_section
+ PARAMS ((bfd *, const char *));
+static boolean elf_i386_size_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean elf_i386_relocate_section
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ Elf_Internal_Rela *, Elf_Internal_Sym *, asection **, char *));
+static boolean elf_i386_finish_dynamic_symbol
+ PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
+ Elf_Internal_Sym *));
+static boolean elf_i386_finish_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+
+#define USE_REL 1 /* 386 uses REL relocations instead of RELA */
+
+enum reloc_type
+ {
+ R_386_NONE = 0,
+ R_386_32,
+ R_386_PC32,
+ R_386_GOT32,
+ R_386_PLT32,
+ R_386_COPY,
+ R_386_GLOB_DAT,
+ R_386_JUMP_SLOT,
+ R_386_RELATIVE,
+ R_386_GOTOFF,
+ R_386_GOTPC,
+ R_386_max
+ };
+
+#if 0
+static CONST char *CONST reloc_type_names[] =
+{
+ "R_386_NONE",
+ "R_386_32",
+ "R_386_PC32",
+ "R_386_GOT32",
+ "R_386_PLT32",
+ "R_386_COPY",
+ "R_386_GLOB_DAT",
+ "R_386_JUMP_SLOT",
+ "R_386_RELATIVE",
+ "R_386_GOTOFF",
+ "R_386_GOTPC",
+};
+#endif
+
+static reloc_howto_type elf_howto_table[]=
+{
+ HOWTO(R_386_NONE, 0,0, 0,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_NONE", true,0x00000000,0x00000000,false),
+ HOWTO(R_386_32, 0,2,32,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_32", true,0xffffffff,0xffffffff,false),
+ HOWTO(R_386_PC32, 0,2,32,true, 0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_PC32", true,0xffffffff,0xffffffff,true),
+ HOWTO(R_386_GOT32, 0,2,32,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_GOT32", true,0xffffffff,0xffffffff,false),
+ HOWTO(R_386_PLT32, 0,2,32,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_PLT32", true,0xffffffff,0xffffffff,false),
+ HOWTO(R_386_COPY, 0,2,32,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_COPY", true,0xffffffff,0xffffffff,false),
+ HOWTO(R_386_GLOB_DAT, 0,2,32,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_GLOB_DAT", true,0xffffffff,0xffffffff,false),
+ HOWTO(R_386_JUMP_SLOT, 0,2,32,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_JUMP_SLOT",true,0xffffffff,0xffffffff,false),
+ HOWTO(R_386_RELATIVE, 0,2,32,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_RELATIVE", true,0xffffffff,0xffffffff,false),
+ HOWTO(R_386_GOTOFF, 0,2,32,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_GOTOFF", true,0xffffffff,0xffffffff,false),
+ HOWTO(R_386_GOTPC, 0,2,32,false,0,complain_overflow_bitfield, bfd_elf_generic_reloc,"R_386_GOTPC", true,0xffffffff,0xffffffff,false),
+};
+
+#ifdef DEBUG_GEN_RELOC
+#define TRACE(str) fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
+#else
+#define TRACE(str)
+#endif
+
+static CONST struct reloc_howto_struct *
+elf_i386_reloc_type_lookup (abfd, code)
+ bfd *abfd;
+ bfd_reloc_code_real_type code;
+{
+ switch (code)
+ {
+ case BFD_RELOC_NONE:
+ TRACE ("BFD_RELOC_NONE");
+ return &elf_howto_table[ (int)R_386_NONE ];
+
+ case BFD_RELOC_32:
+ TRACE ("BFD_RELOC_32");
+ return &elf_howto_table[ (int)R_386_32 ];
+
+ case BFD_RELOC_32_PCREL:
+ TRACE ("BFD_RELOC_PC32");
+ return &elf_howto_table[ (int)R_386_PC32 ];
+
+ case BFD_RELOC_386_GOT32:
+ TRACE ("BFD_RELOC_386_GOT32");
+ return &elf_howto_table[ (int)R_386_GOT32 ];
+
+ case BFD_RELOC_386_PLT32:
+ TRACE ("BFD_RELOC_386_PLT32");
+ return &elf_howto_table[ (int)R_386_PLT32 ];
+
+ case BFD_RELOC_386_COPY:
+ TRACE ("BFD_RELOC_386_COPY");
+ return &elf_howto_table[ (int)R_386_COPY ];
+
+ case BFD_RELOC_386_GLOB_DAT:
+ TRACE ("BFD_RELOC_386_GLOB_DAT");
+ return &elf_howto_table[ (int)R_386_GLOB_DAT ];
+
+ case BFD_RELOC_386_JUMP_SLOT:
+ TRACE ("BFD_RELOC_386_JUMP_SLOT");
+ return &elf_howto_table[ (int)R_386_JUMP_SLOT ];
+
+ case BFD_RELOC_386_RELATIVE:
+ TRACE ("BFD_RELOC_386_RELATIVE");
+ return &elf_howto_table[ (int)R_386_RELATIVE ];
+
+ case BFD_RELOC_386_GOTOFF:
+ TRACE ("BFD_RELOC_386_GOTOFF");
+ return &elf_howto_table[ (int)R_386_GOTOFF ];
+
+ case BFD_RELOC_386_GOTPC:
+ TRACE ("BFD_RELOC_386_GOTPC");
+ return &elf_howto_table[ (int)R_386_GOTPC ];
+
+ default:
+ break;
+ }
+
+ TRACE ("Unknown");
+ return 0;
+}
+
+static void
+elf_i386_info_to_howto (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf32_Internal_Rela *dst;
+{
+ BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_386_max);
+
+ cache_ptr->howto = &elf_howto_table[ELF32_R_TYPE(dst->r_info)];
+}
+
+static void
+elf_i386_info_to_howto_rel (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf32_Internal_Rel *dst;
+{
+ BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_386_max);
+
+ cache_ptr->howto = &elf_howto_table[ELF32_R_TYPE(dst->r_info)];
+}
+
+/* Functions for the i386 ELF linker. */
+
+/* The name of the dynamic interpreter. This is put in the .interp
+ section. */
+
+#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
+
+/* The size in bytes of an entry in the procedure linkage table. */
+
+#define PLT_ENTRY_SIZE 16
+
+/* The first entry in an absolute procedure linkage table looks like
+ this. See the SVR4 ABI i386 supplement to see how this works. */
+
+static bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] =
+{
+ 0xff, 0x35, /* pushl contents of address */
+ 0, 0, 0, 0, /* replaced with address of .got + 4. */
+ 0xff, 0x25, /* jmp indirect */
+ 0, 0, 0, 0, /* replaced with address of .got + 8. */
+ 0, 0, 0, 0 /* pad out to 16 bytes. */
+};
+
+/* Subsequent entries in an absolute procedure linkage table look like
+ this. */
+
+static bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
+{
+ 0xff, 0x25, /* jmp indirect */
+ 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
+ 0x68, /* pushl immediate */
+ 0, 0, 0, 0, /* replaced with offset into relocation table. */
+ 0xe9, /* jmp relative */
+ 0, 0, 0, 0 /* replaced with offset to start of .plt. */
+};
+
+/* Create dynamic sections when linking against a dynamic object. */
+
+static boolean
+elf_i386_create_dynamic_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ flagword flags;
+ register asection *s;
+ struct elf_link_hash_entry *h;
+
+ /* We need to create .plt, .rel.plt, .got, .dynbss, and .rel.bss
+ sections. */
+
+ flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+
+ s = bfd_make_section (abfd, ".plt");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY | SEC_CODE)
+ || ! bfd_set_section_alignment (abfd, s, 2))
+ return false;
+
+ s = bfd_make_section (abfd, ".rel.plt");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || ! bfd_set_section_alignment (abfd, s, 2))
+ return false;
+
+ s = bfd_make_section (abfd, ".got");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags)
+ || ! bfd_set_section_alignment (abfd, s, 2))
+ return false;
+
+ /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
+ section. We don't do this in the linker script because we don't
+ want to define the symbol if we are not creating a global offset
+ table. */
+ h = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, (bfd_vma) 0,
+ (const char *) NULL, false, get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
+
+ /* The first three global offset table entries are reserved. */
+ s->_raw_size += 3 * 4;
+
+ /* The .dynbss section is a place to put symbols which are defined
+ by dynamic objects, are referenced by regular objects, and are
+ not functions. We must allocate space for them in the process
+ image and use a R_386_COPY reloc to tell the dynamic linker to
+ initialize them at run time. The linker script puts the .dynbss
+ section into the .bss section of the final image. */
+ s = bfd_make_section (abfd, ".dynbss");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
+ return false;
+
+ /* The .rel.bss section holds copy relocs. This section is not
+ normally needed. We need to create it here, though, so that the
+ linker will map it to an output section. If it turns out not to
+ be needed, we can discard it later. */
+ s = bfd_make_section (abfd, ".rel.bss");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || ! bfd_set_section_alignment (abfd, s, 2))
+ return false;
+
+ return true;
+}
+
+/* Adjust a symbol defined by a dynamic object and referenced by a
+ regular object. The current definition is in some section of the
+ dynamic object, but we're not including those sections. We have to
+ change the definition to something the rest of the link can
+ understand. */
+
+static boolean
+elf_i386_adjust_dynamic_symbol (info, h)
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
+{
+ bfd *dynobj;
+ asection *s;
+ unsigned int power_of_two;
+ size_t align;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ /* Make sure we know what is going on here. */
+ BFD_ASSERT (dynobj != NULL
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) != 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
+ && h->root.type == bfd_link_hash_defined
+ && (bfd_get_flavour (h->root.u.def.section->owner)
+ == bfd_target_elf_flavour)
+ && (elf_elfheader (h->root.u.def.section->owner)->e_type
+ == ET_DYN)
+ && h->root.u.def.section->output_section == NULL);
+
+ /* If this is a function, put it in the procedure linkage table. We
+ will fill in the contents of the procedure linkage table later,
+ when we know the address of the .got section. */
+ if (h->type == STT_FUNC)
+ {
+ s = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (s != NULL);
+
+ /* If this is the first .plt entry, make room for the special
+ first entry. */
+ if (s->_raw_size == 0)
+ s->_raw_size += PLT_ENTRY_SIZE;
+
+ /* Set the symbol to this location in the .plt. */
+ h->root.u.def.section = s;
+ h->root.u.def.value = s->_raw_size;
+
+ /* Make room for this entry. */
+ s->_raw_size += PLT_ENTRY_SIZE;
+
+ /* We also need to make an entry in the .got section. */
+
+ s = bfd_get_section_by_name (dynobj, ".got");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size += 4;
+
+ /* We also need to make an entry in the .rel.plt section. */
+
+ s = bfd_get_section_by_name (dynobj, ".rel.plt");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size += sizeof (Elf32_External_Rel);
+
+ return true;
+ }
+
+ /* If this is a weak symbol, and there is a real definition, the
+ processor independent code will have arranged for us to see the
+ real definition first, and we can just use the same value. */
+ if (h->weakdef != NULL)
+ {
+ BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined);
+ h->root.u.def.section = h->weakdef->root.u.def.section;
+ h->root.u.def.value = h->weakdef->root.u.def.value;
+ h->align = (bfd_size_type) -1;
+ return true;
+ }
+
+ /* This is a reference to a symbol defined by a dynamic object which
+ is not a function. We must allocate it in our .dynbss section,
+ which will become part of the .bss section of the executable.
+ There will be an entry for this symbol in the .dynsym section.
+ The dynamic object will contain position independent code, so all
+ references from the dynamic object to this symbol will go through
+ the global offset table. The dynamic linker will use the .dynsym
+ entry to determine the address it must put in the global offset
+ table, so both the dynamic object and the regular object will
+ refer to the same memory location for the variable. */
+
+ s = bfd_get_section_by_name (dynobj, ".dynbss");
+ BFD_ASSERT (s != NULL);
+
+ /* If the symbol is currently defined in the .bss section of the
+ dynamic object, then it is OK to simply initialize it to zero.
+ If the symbol is in some other section, we must generate a
+ R_386_COPY reloc to tell the dynamic linker to copy the initial
+ value out of the dynamic object and into the runtime process
+ image. We need to remember the offset into the .rel.bss section
+ we are going to use, and we coopt the align field for this
+ purpose (the align field is only used for common symbols, and
+ these symbols are always defined). It would be cleaner to use a
+ new field, but that would waste memory. */
+ if ((h->root.u.def.section->flags & SEC_LOAD) == 0)
+ h->align = (bfd_size_type) -1;
+ else
+ {
+ asection *srel;
+
+ srel = bfd_get_section_by_name (dynobj, ".rel.bss");
+ BFD_ASSERT (srel != NULL);
+ h->align = srel->_raw_size;
+ srel->_raw_size += sizeof (Elf32_External_Rel);
+ }
+
+ /* We need to figure out the alignment required for this symbol. I
+ have no idea how ELF linkers handle this. */
+ switch (h->size)
+ {
+ case 0:
+ case 1:
+ power_of_two = 0;
+ align = 1;
+ break;
+ case 2:
+ power_of_two = 1;
+ align = 2;
+ break;
+ case 3:
+ case 4:
+ power_of_two = 2;
+ align = 4;
+ break;
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ power_of_two = 3;
+ align = 8;
+ break;
+ default:
+ power_of_two = 4;
+ align = 16;
+ break;
+ }
+
+ /* Apply the required alignment. */
+ s->_raw_size = BFD_ALIGN (s->_raw_size, align);
+ if (power_of_two > bfd_get_section_alignment (dynobj, s))
+ {
+ if (! bfd_set_section_alignment (dynobj, s, power_of_two))
+ return false;
+ }
+
+ /* Define the symbol as being at this point in the section. */
+ h->root.u.def.section = s;
+ h->root.u.def.value = s->_raw_size;
+
+ /* Increment the section size to make room for the symbol. */
+ s->_raw_size += h->size;
+
+ return true;
+}
+
+/* Allocate contents for a section. */
+
+static INLINE boolean
+elf_i386_allocate_dynamic_section (dynobj, name)
+ bfd *dynobj;
+ const char *name;
+{
+ register asection *s;
+
+ s = bfd_get_section_by_name (dynobj, name);
+ BFD_ASSERT (s != NULL);
+ s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
+ if (s->contents == NULL && s->_raw_size != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ return true;
+}
+
+/* Set the sizes of the dynamic sections. */
+
+static boolean
+elf_i386_size_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ asection *s;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ BFD_ASSERT (dynobj != NULL);
+
+ /* Set the contents of the .interp section to the interpreter. */
+ if (! info->shared)
+ {
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+
+ /* The adjust_dynamic_symbol entry point has determined the sizes of
+ the various dynamic sections. Allocate some memory for them to
+ hold contents. */
+ if (! elf_i386_allocate_dynamic_section (dynobj, ".plt")
+ || ! elf_i386_allocate_dynamic_section (dynobj, ".rel.plt")
+ || ! elf_i386_allocate_dynamic_section (dynobj, ".got")
+ || ! elf_i386_allocate_dynamic_section (dynobj, ".rel.bss"))
+ return false;
+
+ /* Add some entries to the .dynamic section. We fill in the values
+ later, in elf_i386_finish_dynamic_sections, but we must add the
+ entries now so that we get the correct size for the .dynamic
+ section. The DT_DEBUG entry is filled in by the dynamic linker
+ and used by the debugger. */
+ if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0))
+ return false;
+
+ s = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (s != NULL);
+ if (s->_raw_size != 0)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_REL)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
+ return false;
+ }
+
+ /* If we didn't need the .rel.bss section, then discard it from the
+ output file. This is a hack. We don't bother to do it for the
+ other sections because they normally are needed. */
+ s = bfd_get_section_by_name (dynobj, ".rel.bss");
+ BFD_ASSERT (s != NULL);
+ if (s->_raw_size == 0)
+ {
+ asection **spp;
+
+ for (spp = &s->output_section->owner->sections;
+ *spp != s->output_section;
+ spp = &(*spp)->next)
+ ;
+ *spp = s->output_section->next;
+ --s->output_section->owner->section_count;
+ }
+ else
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_REL, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_RELSZ, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_RELENT,
+ sizeof (Elf32_External_Rel)))
+ return false;
+ }
+
+ return true;
+}
+
+/* Relocate an i386 ELF section. */
+
+static boolean
+elf_i386_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, local_syms, local_sections,
+ output_names)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ Elf_Internal_Rela *relocs;
+ Elf_Internal_Sym *local_syms;
+ asection **local_sections;
+ char *output_names;
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ int r_type;
+ const reloc_howto_type *howto;
+ long r_symndx;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+ if (r_type < 0 || r_type >= (int) R_386_max)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ howto = elf_howto_table + r_type;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ if (info->relocateable)
+ {
+ /* This is a relocateable link. We don't have to change
+ anything, unless the reloc is against a section symbol,
+ in which case we have to adjust according to where the
+ section symbol winds up in the output section. */
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ {
+ bfd_vma val;
+
+ sec = local_sections[r_symndx];
+ val = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ val += sec->output_offset + sym->st_value;
+ bfd_put_32 (input_bfd, val, contents + rel->r_offset);
+ }
+ }
+
+ continue;
+ }
+
+ /* This is a final link. */
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ sec = local_sections[r_symndx];
+ relocation = (sec->output_section->vma
+ + sec->output_offset
+ + sym->st_value);
+ }
+ else
+ {
+ long indx;
+
+ indx = r_symndx - symtab_hdr->sh_info;
+ h = elf_sym_hashes (input_bfd)[indx];
+ if (h->root.type == bfd_link_hash_defined)
+ {
+ sec = h->root.u.def.section;
+ relocation = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
+ else if (h->root.type == bfd_link_hash_weak)
+ relocation = 0;
+ else
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd,
+ input_section, rel->r_offset)))
+ return false;
+ relocation = 0;
+ }
+ }
+
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, (bfd_vma) 0);
+
+ if (r != bfd_reloc_ok)
+ {
+ switch (r)
+ {
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+ case bfd_reloc_overflow:
+ {
+ const char *name;
+
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ {
+ name = output_names + sym->st_name;
+ if (name == NULL)
+ return false;
+ if (*name == '\0')
+ name = bfd_section_name (input_bfd, sec);
+ }
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset)))
+ return false;
+ }
+ break;
+ }
+ }
+ }
+
+ return true;
+}
+
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
+
+static boolean
+elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+{
+ /* If this symbol is not defined by a dynamic object, or is not
+ referenced by a regular object, ignore it. */
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
+ {
+ /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
+ if (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ sym->st_shndx = SHN_ABS;
+ return true;
+ }
+
+ BFD_ASSERT (h->root.type == bfd_link_hash_defined);
+ BFD_ASSERT (h->dynindx != -1);
+
+ if (h->type == STT_FUNC)
+ {
+ asection *splt;
+ asection *sgot;
+ asection *srel;
+ bfd_vma plt_index;
+ bfd_vma got_offset;
+ Elf_Internal_Rel rel;
+
+ splt = h->root.u.def.section;
+ BFD_ASSERT (strcmp (bfd_get_section_name (splt->owner, splt), ".plt")
+ == 0);
+ sgot = bfd_get_section_by_name (splt->owner, ".got");
+ BFD_ASSERT (sgot != NULL);
+ srel = bfd_get_section_by_name (splt->owner, ".rel.plt");
+ BFD_ASSERT (srel != NULL);
+
+ /* FIXME: This only handles an absolute procedure linkage table.
+ When producing a dynamic object, we need to generate a
+ position independent procedure linkage table. */
+
+ /* Get the index in the procedure linkage table which
+ corresponds to this symbol. This is the index of this symbol
+ in all the symbols for which we are making plt entries. The
+ first entry in the procedure linkage table is reserved. */
+ plt_index = h->root.u.def.value / PLT_ENTRY_SIZE - 1;
+
+ /* Get the offset into the .got table of the entry that
+ corresponds to this function. Each .got entry is 4 bytes.
+ The first three are reserved. */
+ got_offset = (plt_index + 3) * 4;
+
+ /* Fill in the entry in the procedure linkage table. */
+ memcpy (splt->contents + h->root.u.def.value, elf_i386_plt_entry,
+ PLT_ENTRY_SIZE);
+ bfd_put_32 (output_bfd,
+ (sgot->output_section->vma
+ + sgot->output_offset
+ + got_offset),
+ splt->contents + h->root.u.def.value + 2);
+ bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
+ splt->contents + h->root.u.def.value + 7);
+ bfd_put_32 (output_bfd, - (h->root.u.def.value + PLT_ENTRY_SIZE),
+ splt->contents + h->root.u.def.value + 12);
+
+ /* Fill in the entry in the global offset table. */
+ bfd_put_32 (output_bfd,
+ (splt->output_section->vma
+ + splt->output_offset
+ + h->root.u.def.value
+ + 6),
+ sgot->contents + got_offset);
+
+ /* Fill in the entry in the .rel.plt section. */
+ rel.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + got_offset);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel,
+ ((Elf32_External_Rel *) srel->contents
+ + plt_index));
+
+ /* Mark the symbol as undefined, rather than as defined in the
+ .plt section. Leave the value alone. */
+ sym->st_shndx = SHN_UNDEF;
+ }
+ else
+ {
+ /* This is not a function. We have already allocated memory for
+ it in the .bss section (via .dynbss). All we have to do here
+ is create a COPY reloc if required. */
+ if (h->align != (bfd_size_type) -1)
+ {
+ asection *s;
+ Elf_Internal_Rel rel;
+
+ s = bfd_get_section_by_name (h->root.u.def.section->owner,
+ ".rel.bss");
+ BFD_ASSERT (s != NULL);
+
+ rel.r_offset = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel,
+ ((Elf32_External_Rel *)
+ (s->contents + h->align)));
+ }
+ }
+
+ return true;
+}
+
+/* Finish up the dynamic sections. */
+
+static boolean
+elf_i386_finish_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ asection *splt;
+ asection *sgot;
+ asection *sdyn;
+ Elf32_External_Dyn *dyncon, *dynconend;
+
+ splt = bfd_get_section_by_name (elf_hash_table (info)->dynobj, ".plt");
+ sgot = bfd_get_section_by_name (elf_hash_table (info)->dynobj, ".got");
+ sdyn = bfd_get_section_by_name (elf_hash_table (info)->dynobj, ".dynamic");
+ BFD_ASSERT (splt != NULL && sgot != NULL && sdyn != NULL);
+
+ dyncon = (Elf32_External_Dyn *) sdyn->contents;
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn dyn;
+ const char *name;
+ boolean size;
+
+ bfd_elf32_swap_dyn_in (elf_hash_table (info)->dynobj, dyncon, &dyn);
+
+ /* My reading of the SVR4 ABI indicates that the procedure
+ linkage table relocs (DT_JMPREL) should be included in the
+ overall relocs (DT_REL). This is what Solaris does.
+ However, UnixWare can not handle that case. Therefore, we
+ override the DT_REL and DT_RELSZ entries here to make them
+ not include the JMPREL relocs. */
+
+ switch (dyn.d_tag)
+ {
+ case DT_PLTGOT: name = ".got"; size = false; break;
+ case DT_PLTRELSZ: name = ".rel.plt"; size = true; break;
+ case DT_JMPREL: name = ".rel.plt"; size = false; break;
+ case DT_REL: name = ".rel.bss"; size = false; break;
+ case DT_RELSZ: name = ".rel.bss"; size = true; break;
+ default: name = NULL; size = false; break;
+ }
+
+ if (name != NULL)
+ {
+ asection *s;
+
+ s = bfd_get_section_by_name (output_bfd, name);
+ BFD_ASSERT (s != NULL);
+ if (! size)
+ dyn.d_un.d_ptr = s->vma;
+ else
+ {
+ if (s->_cooked_size != 0)
+ dyn.d_un.d_val = s->_cooked_size;
+ else
+ dyn.d_un.d_val = s->_raw_size;
+ }
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ }
+ }
+
+ /* Fill in the first entry in the procedure linkage table. */
+ if (splt->_raw_size > 0)
+ {
+ memcpy (splt->contents, elf_i386_plt0_entry, PLT_ENTRY_SIZE);
+ bfd_put_32 (output_bfd,
+ sgot->output_section->vma + sgot->output_offset + 4,
+ splt->contents + 2);
+ bfd_put_32 (output_bfd,
+ sgot->output_section->vma + sgot->output_offset + 8,
+ splt->contents + 8);
+ }
+
+ /* Fill in the first three entries in the global offset table. */
+ if (sgot->_raw_size > 0)
+ {
+ bfd_put_32 (output_bfd,
+ sdyn->output_section->vma + sdyn->output_offset,
+ sgot->contents);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
+ }
+
+ elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
+
+ /* UnixWare sets the entsize of .plt to 4, although that doesn't
+ really seem like the right value. */
+ elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
+
+ return true;
+}
+
+#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
+#define TARGET_LITTLE_NAME "elf32-i386"
+#define ELF_ARCH bfd_arch_i386
+#define ELF_MACHINE_CODE EM_386
+#define elf_info_to_howto elf_i386_info_to_howto
+#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
+#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
+#define ELF_MAXPAGESIZE 0x1000
+#define elf_backend_create_dynamic_sections \
+ elf_i386_create_dynamic_sections
+#define elf_backend_adjust_dynamic_symbol \
+ elf_i386_adjust_dynamic_symbol
+#define elf_backend_size_dynamic_sections \
+ elf_i386_size_dynamic_sections
+#define elf_backend_relocate_section elf_i386_relocate_section
+#define elf_backend_finish_dynamic_symbol \
+ elf_i386_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections \
+ elf_i386_finish_dynamic_sections
+
+#include "elf32-target.h"
diff --git a/gnu/usr.bin/gdb/bfd/elf32-target.h b/gnu/usr.bin/gdb/bfd/elf32-target.h
new file mode 100644
index 0000000000000..67dabecc71fe9
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/elf32-target.h
@@ -0,0 +1,358 @@
+/* Target definitions for 32-bit ELF
+ Copyright 1993, 1994 Free Software Foundation, Inc.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* This structure contains everything that BFD knows about a target.
+ It includes things like its byte order, name, what routines to call
+ to do various operations, etc. Every BFD points to a target structure
+ with its "xvec" member.
+
+ There are two such structures here: one for big-endian machines and
+ one for little-endian machines. */
+
+#define bfd_elf32_close_and_cleanup _bfd_generic_close_and_cleanup
+#define bfd_elf32_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
+#ifndef bfd_elf32_get_section_contents
+#define bfd_elf32_get_section_contents _bfd_generic_get_section_contents
+#endif
+
+#define bfd_elf32_bfd_get_relocated_section_contents \
+ bfd_generic_get_relocated_section_contents
+#define bfd_elf32_bfd_relax_section bfd_generic_relax_section
+#define bfd_elf32_bfd_make_debug_symbol \
+ ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
+
+#ifndef bfd_elf32_bfd_copy_private_section_data
+#define bfd_elf32_bfd_copy_private_section_data \
+ ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
+#endif
+#ifndef bfd_elf32_bfd_copy_private_bfd_data
+#define bfd_elf32_bfd_copy_private_bfd_data \
+ ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
+#endif
+#ifndef bfd_elf32_bfd_is_local_label
+#define bfd_elf32_bfd_is_local_label bfd_generic_is_local_label
+#endif
+
+#ifndef bfd_elf32_get_dynamic_reloc_upper_bound
+#define bfd_elf32_get_dynamic_reloc_upper_bound \
+ _bfd_nodynamic_get_dynamic_reloc_upper_bound
+#endif
+#ifndef bfd_elf32_canonicalize_dynamic_reloc
+#define bfd_elf32_canonicalize_dynamic_reloc \
+ _bfd_nodynamic_canonicalize_dynamic_reloc
+#endif
+
+#ifdef elf_backend_relocate_section
+#ifndef bfd_elf32_bfd_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
+#endif
+#else /* ! defined (elf_backend_relocate_section) */
+/* If no backend relocate_section routine, use the generic linker. */
+#ifndef bfd_elf32_bfd_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_create \
+ _bfd_generic_link_hash_table_create
+#endif
+#ifndef bfd_elf32_bfd_link_add_symbols
+#define bfd_elf32_bfd_link_add_symbols _bfd_generic_link_add_symbols
+#endif
+#ifndef bfd_elf32_bfd_final_link
+#define bfd_elf32_bfd_final_link _bfd_generic_final_link
+#endif
+#endif /* ! defined (elf_backend_relocate_section) */
+
+#ifndef elf_info_to_howto_rel
+#define elf_info_to_howto_rel 0
+#endif
+
+#ifndef ELF_MAXPAGESIZE
+#define ELF_MAXPAGESIZE 1
+#endif
+
+#ifndef elf_backend_collect
+#define elf_backend_collect false
+#endif
+
+#ifndef elf_backend_sym_is_global
+#define elf_backend_sym_is_global 0
+#endif
+#ifndef elf_backend_object_p
+#define elf_backend_object_p 0
+#endif
+#ifndef elf_backend_symbol_processing
+#define elf_backend_symbol_processing 0
+#endif
+#ifndef elf_backend_symbol_table_processing
+#define elf_backend_symbol_table_processing 0
+#endif
+#ifndef elf_backend_section_processing
+#define elf_backend_section_processing 0
+#endif
+#ifndef elf_backend_section_from_shdr
+#define elf_backend_section_from_shdr 0
+#endif
+#ifndef elf_backend_fake_sections
+#define elf_backend_fake_sections 0
+#endif
+#ifndef elf_backend_section_from_bfd_section
+#define elf_backend_section_from_bfd_section 0
+#endif
+#ifndef elf_backend_add_symbol_hook
+#define elf_backend_add_symbol_hook 0
+#endif
+#ifndef elf_backend_link_output_symbol_hook
+#define elf_backend_link_output_symbol_hook 0
+#endif
+#ifndef elf_backend_create_dynamic_sections
+#define elf_backend_create_dynamic_sections 0
+#endif
+#ifndef elf_backend_adjust_dynamic_symbol
+#define elf_backend_adjust_dynamic_symbol 0
+#endif
+#ifndef elf_backend_size_dynamic_sections
+#define elf_backend_size_dynamic_sections 0
+#endif
+#ifndef elf_backend_relocate_section
+#define elf_backend_relocate_section 0
+#endif
+#ifndef elf_backend_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_symbol 0
+#endif
+#ifndef elf_backend_finish_dynamic_sections
+#define elf_backend_finish_dynamic_sections 0
+#endif
+#ifndef elf_backend_begin_write_processing
+#define elf_backend_begin_write_processing 0
+#endif
+#ifndef elf_backend_final_write_processing
+#define elf_backend_final_write_processing 0
+#endif
+#ifndef elf_backend_ecoff_debug_swap
+#define elf_backend_ecoff_debug_swap 0
+#endif
+
+static CONST struct elf_backend_data elf32_bed =
+{
+#ifdef USE_REL
+ 0, /* use_rela_p */
+#else
+ 1, /* use_rela_p */
+#endif
+ 0, /* elf_64_p */
+ ELF_ARCH, /* arch */
+ ELF_MACHINE_CODE, /* elf_machine_code */
+ ELF_MAXPAGESIZE, /* maxpagesize */
+ elf_backend_collect,
+ elf_info_to_howto,
+ elf_info_to_howto_rel,
+ elf_backend_sym_is_global,
+ elf_backend_object_p,
+ elf_backend_symbol_processing,
+ elf_backend_symbol_table_processing,
+ elf_backend_section_processing,
+ elf_backend_section_from_shdr,
+ elf_backend_fake_sections,
+ elf_backend_section_from_bfd_section,
+ elf_backend_add_symbol_hook,
+ elf_backend_link_output_symbol_hook,
+ elf_backend_create_dynamic_sections,
+ elf_backend_adjust_dynamic_symbol,
+ elf_backend_size_dynamic_sections,
+ elf_backend_relocate_section,
+ elf_backend_finish_dynamic_symbol,
+ elf_backend_finish_dynamic_sections,
+ elf_backend_begin_write_processing,
+ elf_backend_final_write_processing,
+ elf_backend_ecoff_debug_swap
+};
+
+#ifdef TARGET_BIG_SYM
+const bfd_target TARGET_BIG_SYM =
+{
+ /* name: identify kind of target */
+ TARGET_BIG_NAME,
+
+ /* flavour: general indication about file */
+ bfd_target_elf_flavour,
+
+ /* byteorder_big_p: data is big endian */
+ true,
+
+ /* header_byteorder_big_p: header is also big endian */
+ true,
+
+ /* object_flags: mask of all file flags */
+ (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
+ DYNAMIC | WP_TEXT | D_PAGED),
+
+ /* section_flags: mask of all section flags */
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
+ SEC_CODE | SEC_DATA | SEC_DEBUGGING),
+
+ /* leading_symbol_char: is the first char of a user symbol
+ predictable, and if so what is it */
+ 0,
+
+ /* ar_pad_char: pad character for filenames within an archive header
+ FIXME: this really has nothing to do with ELF, this is a characteristic
+ of the archiver and/or os and should be independently tunable */
+ '/',
+
+ /* ar_max_namelen: maximum number of characters in an archive header
+ FIXME: this really has nothing to do with ELF, this is a characteristic
+ of the archiver and should be independently tunable. This value is
+ a WAG (wild a** guess) */
+ 14,
+
+ /* align_power_min: minimum alignment restriction for any section
+ FIXME: this value may be target machine dependent */
+ 3,
+
+ /* Routines to byte-swap various sized integers from the data sections */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16,
+
+ /* Routines to byte-swap various sized integers from the file headers */
+ bfd_getb64, bfd_getb_signed_64, bfd_putb64,
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16,
+
+ /* bfd_check_format: check the format of a file being read */
+ { _bfd_dummy_target, /* unknown format */
+ bfd_elf32_object_p, /* assembler/linker output (object file) */
+ bfd_generic_archive_p, /* an archive */
+ bfd_elf32_core_file_p /* a core file */
+ },
+
+ /* bfd_set_format: set the format of a file being written */
+ { bfd_false,
+ bfd_elf_mkobject,
+ _bfd_generic_mkarchive,
+ bfd_false
+ },
+
+ /* bfd_write_contents: write cached information into a file being written */
+ { bfd_false,
+ bfd_elf32_write_object_contents,
+ _bfd_write_archive_contents,
+ bfd_false
+ },
+
+ BFD_JUMP_TABLE_GENERIC (bfd_elf32),
+ BFD_JUMP_TABLE_COPY (bfd_elf32),
+ BFD_JUMP_TABLE_CORE (bfd_elf32),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+ BFD_JUMP_TABLE_SYMBOLS (bfd_elf32),
+ BFD_JUMP_TABLE_RELOCS (bfd_elf32),
+ BFD_JUMP_TABLE_WRITE (bfd_elf32),
+ BFD_JUMP_TABLE_LINK (bfd_elf32),
+ BFD_JUMP_TABLE_DYNAMIC (bfd_elf32),
+
+ /* backend_data: */
+ (PTR) &elf32_bed,
+};
+#endif
+
+#ifdef TARGET_LITTLE_SYM
+const bfd_target TARGET_LITTLE_SYM =
+{
+ /* name: identify kind of target */
+ TARGET_LITTLE_NAME,
+
+ /* flavour: general indication about file */
+ bfd_target_elf_flavour,
+
+ /* byteorder_big_p: data is big endian */
+ false, /* Nope -- this one's little endian */
+
+ /* header_byteorder_big_p: header is also big endian */
+ false, /* Nope -- this one's little endian */
+
+ /* object_flags: mask of all file flags */
+ (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
+ DYNAMIC | WP_TEXT | D_PAGED),
+
+ /* section_flags: mask of all section flags */
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
+ SEC_CODE | SEC_DATA | SEC_DEBUGGING),
+
+ /* leading_symbol_char: is the first char of a user symbol
+ predictable, and if so what is it */
+ 0,
+
+ /* ar_pad_char: pad character for filenames within an archive header
+ FIXME: this really has nothing to do with ELF, this is a characteristic
+ of the archiver and/or os and should be independently tunable */
+ '/',
+
+ /* ar_max_namelen: maximum number of characters in an archive header
+ FIXME: this really has nothing to do with ELF, this is a characteristic
+ of the archiver and should be independently tunable. This value is
+ a WAG (wild a** guess) */
+ 14,
+
+ /* align_power_min: minimum alignment restriction for any section
+ FIXME: this value may be target machine dependent */
+ 3,
+
+ /* Routines to byte-swap various sized integers from the data sections */
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16,
+
+ /* Routines to byte-swap various sized integers from the file headers */
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16,
+
+ /* bfd_check_format: check the format of a file being read */
+ { _bfd_dummy_target, /* unknown format */
+ bfd_elf32_object_p, /* assembler/linker output (object file) */
+ bfd_generic_archive_p, /* an archive */
+ bfd_elf32_core_file_p /* a core file */
+ },
+
+ /* bfd_set_format: set the format of a file being written */
+ { bfd_false,
+ bfd_elf_mkobject,
+ _bfd_generic_mkarchive,
+ bfd_false
+ },
+
+ /* bfd_write_contents: write cached information into a file being written */
+ { bfd_false,
+ bfd_elf32_write_object_contents,
+ _bfd_write_archive_contents,
+ bfd_false
+ },
+
+ BFD_JUMP_TABLE_GENERIC (bfd_elf32),
+ BFD_JUMP_TABLE_COPY (bfd_elf32),
+ BFD_JUMP_TABLE_CORE (bfd_elf32),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+ BFD_JUMP_TABLE_SYMBOLS (bfd_elf32),
+ BFD_JUMP_TABLE_RELOCS (bfd_elf32),
+ BFD_JUMP_TABLE_WRITE (bfd_elf32),
+ BFD_JUMP_TABLE_LINK (bfd_elf32),
+ BFD_JUMP_TABLE_DYNAMIC (bfd_elf32),
+
+ /* backend_data: */
+ (PTR) &elf32_bed,
+};
+#endif
diff --git a/gnu/usr.bin/gdb/bfd/elf32.c b/gnu/usr.bin/gdb/bfd/elf32.c
new file mode 100644
index 0000000000000..862dd2df592cb
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/elf32.c
@@ -0,0 +1,23 @@
+/* ELF 32-bit executable support for BFD.
+ Copyright 1993 Free Software Foundation, Inc.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#define ARCH_SIZE 32
+
+
+#include "elfcode.h"
diff --git a/gnu/usr.bin/gdb/bfd/elfcode.h b/gnu/usr.bin/gdb/bfd/elfcode.h
new file mode 100644
index 0000000000000..5d9ffd10d2791
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/elfcode.h
@@ -0,0 +1,6351 @@
+/* ELF executable support for BFD.
+ Copyright 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+
+ Written by Fred Fish @ Cygnus Support, from information published
+ in "UNIX System V Release 4, Programmers Guide: ANSI C and
+ Programming Support Tools". Sufficient support for gdb.
+
+ Rewritten by Mark Eichin @ Cygnus Support, from information
+ published in "System V Application Binary Interface", chapters 4
+ and 5, as well as the various "Processor Supplement" documents
+ derived from it. Added support for assembler and other object file
+ utilities. Further work done by Ken Raeburn (Cygnus Support), Michael
+ Meissner (Open Software Foundation), and Peter Hoogenboom (University
+ of Utah) to finish and extend this.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* Problems and other issues to resolve.
+
+ (1) BFD expects there to be some fixed number of "sections" in
+ the object file. I.E. there is a "section_count" variable in the
+ bfd structure which contains the number of sections. However, ELF
+ supports multiple "views" of a file. In particular, with current
+ implementations, executable files typically have two tables, a
+ program header table and a section header table, both of which
+ partition the executable.
+
+ In ELF-speak, the "linking view" of the file uses the section header
+ table to access "sections" within the file, and the "execution view"
+ uses the program header table to access "segments" within the file.
+ "Segments" typically may contain all the data from one or more
+ "sections".
+
+ Note that the section header table is optional in ELF executables,
+ but it is this information that is most useful to gdb. If the
+ section header table is missing, then gdb should probably try
+ to make do with the program header table. (FIXME)
+
+ (2) The code in this file is compiled twice, once in 32-bit mode and
+ once in 64-bit mode. More of it should be made size-independent
+ and moved into elf.c.
+
+ (3) ELF section symbols are handled rather sloppily now. This should
+ be cleaned up, and ELF section symbols reconciled with BFD section
+ symbols.
+
+ (4) We need a published spec for 64-bit ELF. We've got some stuff here
+ that we're using for SPARC V9 64-bit chips, but don't assume that
+ it's cast in stone.
+ */
+
+#include <string.h> /* For strrchr and friends */
+#include "bfd.h"
+#include "sysdep.h"
+#include "bfdlink.h"
+#include "libbfd.h"
+#include "libelf.h"
+
+/* Renaming structures, typedefs, macros and functions to be size-specific. */
+#define Elf_External_Ehdr NAME(Elf,External_Ehdr)
+#define Elf_External_Sym NAME(Elf,External_Sym)
+#define Elf_External_Shdr NAME(Elf,External_Shdr)
+#define Elf_External_Phdr NAME(Elf,External_Phdr)
+#define Elf_External_Rel NAME(Elf,External_Rel)
+#define Elf_External_Rela NAME(Elf,External_Rela)
+#define Elf_External_Dyn NAME(Elf,External_Dyn)
+
+#define elf_core_file_failing_command NAME(bfd_elf,core_file_failing_command)
+#define elf_core_file_failing_signal NAME(bfd_elf,core_file_failing_signal)
+#define elf_core_file_matches_executable_p \
+ NAME(bfd_elf,core_file_matches_executable_p)
+#define elf_object_p NAME(bfd_elf,object_p)
+#define elf_core_file_p NAME(bfd_elf,core_file_p)
+#define elf_get_symtab_upper_bound NAME(bfd_elf,get_symtab_upper_bound)
+#define elf_get_dynamic_symtab_upper_bound \
+ NAME(bfd_elf,get_dynamic_symtab_upper_bound)
+#define elf_swap_reloc_in NAME(bfd_elf,swap_reloc_in)
+#define elf_swap_reloca_in NAME(bfd_elf,swap_reloca_in)
+#define elf_swap_reloc_out NAME(bfd_elf,swap_reloc_out)
+#define elf_swap_reloca_out NAME(bfd_elf,swap_reloca_out)
+#define elf_swap_symbol_in NAME(bfd_elf,swap_symbol_in)
+#define elf_swap_symbol_out NAME(bfd_elf,swap_symbol_out)
+#define elf_swap_dyn_in NAME(bfd_elf,swap_dyn_in)
+#define elf_swap_dyn_out NAME(bfd_elf,swap_dyn_out)
+#define elf_get_reloc_upper_bound NAME(bfd_elf,get_reloc_upper_bound)
+#define elf_canonicalize_reloc NAME(bfd_elf,canonicalize_reloc)
+#define elf_get_symtab NAME(bfd_elf,get_symtab)
+#define elf_canonicalize_dynamic_symtab \
+ NAME(bfd_elf,canonicalize_dynamic_symtab)
+#define elf_make_empty_symbol NAME(bfd_elf,make_empty_symbol)
+#define elf_get_symbol_info NAME(bfd_elf,get_symbol_info)
+#define elf_print_symbol NAME(bfd_elf,print_symbol)
+#define elf_get_lineno NAME(bfd_elf,get_lineno)
+#define elf_set_arch_mach NAME(bfd_elf,set_arch_mach)
+#define elf_find_nearest_line NAME(bfd_elf,find_nearest_line)
+#define elf_sizeof_headers NAME(bfd_elf,sizeof_headers)
+#define elf_set_section_contents NAME(bfd_elf,set_section_contents)
+#define elf_no_info_to_howto NAME(bfd_elf,no_info_to_howto)
+#define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel)
+#define elf_new_section_hook NAME(bfd_elf,new_section_hook)
+#define write_relocs NAME(bfd_elf,_write_relocs)
+#define elf_find_section NAME(bfd_elf,find_section)
+#define elf_bfd_link_add_symbols NAME(bfd_elf,bfd_link_add_symbols)
+#define elf_add_dynamic_entry NAME(bfd_elf,add_dynamic_entry)
+#define elf_bfd_final_link NAME(bfd_elf,bfd_final_link)
+
+#if ARCH_SIZE == 64
+#define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y)
+#define ELF_R_SYM(X) ELF64_R_SYM(X)
+#define ELF_R_TYPE(X) ELF64_R_TYPE(X)
+#define ELFCLASS ELFCLASS64
+#define FILE_ALIGN 8
+#define LOG_FILE_ALIGN 3
+#endif
+#if ARCH_SIZE == 32
+#define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y)
+#define ELF_R_SYM(X) ELF32_R_SYM(X)
+#define ELF_R_TYPE(X) ELF32_R_TYPE(X)
+#define ELFCLASS ELFCLASS32
+#define FILE_ALIGN 4
+#define LOG_FILE_ALIGN 2
+#endif
+
+/* Forward declarations of static functions */
+
+static unsigned long bfd_add_to_strtab
+ PARAMS ((bfd *, struct strtab *, const char *));
+static asection *section_from_elf_index PARAMS ((bfd *, unsigned int));
+
+static int elf_section_from_bfd_section PARAMS ((bfd *, struct sec *));
+
+static long elf_slurp_symbol_table PARAMS ((bfd *, asymbol **, boolean));
+
+static boolean elf_slurp_reloc_table PARAMS ((bfd *, asection *, asymbol **));
+
+static int elf_symbol_from_bfd_symbol PARAMS ((bfd *,
+ struct symbol_cache_entry **));
+
+static boolean elf_compute_section_file_positions
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean prep_headers PARAMS ((bfd *));
+static void elf_fake_sections PARAMS ((bfd *, asection *, PTR));
+static boolean assign_section_numbers PARAMS ((bfd *));
+static file_ptr align_file_position PARAMS ((file_ptr));
+static file_ptr assign_file_position_for_section
+ PARAMS ((Elf_Internal_Shdr *, file_ptr, boolean));
+static boolean assign_file_positions_except_relocs PARAMS ((bfd *, boolean));
+static void assign_file_positions_for_relocs PARAMS ((bfd *));
+static bfd_size_type get_program_header_size PARAMS ((bfd *));
+static file_ptr map_program_segments
+ PARAMS ((bfd *, file_ptr, Elf_Internal_Shdr *, bfd_size_type));
+
+static boolean elf_map_symbols PARAMS ((bfd *));
+static boolean swap_out_syms PARAMS ((bfd *));
+
+static boolean bfd_section_from_shdr PARAMS ((bfd *, unsigned int shindex));
+
+#ifdef DEBUG
+static void elf_debug_section PARAMS ((char *, int, Elf_Internal_Shdr *));
+static void elf_debug_file PARAMS ((Elf_Internal_Ehdr *));
+#endif
+
+#define elf_string_from_elf_strtab(abfd,strindex) \
+ elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex)
+
+
+/* Structure swapping routines */
+
+/* Should perhaps use put_offset, put_word, etc. For now, the two versions
+ can be handled by explicitly specifying 32 bits or "the long type". */
+#if ARCH_SIZE == 64
+#define put_word bfd_h_put_64
+#define get_word bfd_h_get_64
+#endif
+#if ARCH_SIZE == 32
+#define put_word bfd_h_put_32
+#define get_word bfd_h_get_32
+#endif
+
+/* Translate an ELF symbol in external format into an ELF symbol in internal
+ format. */
+
+void
+elf_swap_symbol_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Sym *src;
+ Elf_Internal_Sym *dst;
+{
+ dst->st_name = bfd_h_get_32 (abfd, (bfd_byte *) src->st_name);
+ dst->st_value = get_word (abfd, (bfd_byte *) src->st_value);
+ dst->st_size = get_word (abfd, (bfd_byte *) src->st_size);
+ dst->st_info = bfd_h_get_8 (abfd, (bfd_byte *) src->st_info);
+ dst->st_other = bfd_h_get_8 (abfd, (bfd_byte *) src->st_other);
+ dst->st_shndx = bfd_h_get_16 (abfd, (bfd_byte *) src->st_shndx);
+}
+
+/* Translate an ELF symbol in internal format into an ELF symbol in external
+ format. */
+
+void
+elf_swap_symbol_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Sym *src;
+ Elf_External_Sym *dst;
+{
+ bfd_h_put_32 (abfd, src->st_name, dst->st_name);
+ put_word (abfd, src->st_value, dst->st_value);
+ put_word (abfd, src->st_size, dst->st_size);
+ bfd_h_put_8 (abfd, src->st_info, dst->st_info);
+ bfd_h_put_8 (abfd, src->st_other, dst->st_other);
+ bfd_h_put_16 (abfd, src->st_shndx, dst->st_shndx);
+}
+
+
+/* Translate an ELF file header in external format into an ELF file header in
+ internal format. */
+
+static void
+elf_swap_ehdr_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Ehdr *src;
+ Elf_Internal_Ehdr *dst;
+{
+ memcpy (dst->e_ident, src->e_ident, EI_NIDENT);
+ dst->e_type = bfd_h_get_16 (abfd, (bfd_byte *) src->e_type);
+ dst->e_machine = bfd_h_get_16 (abfd, (bfd_byte *) src->e_machine);
+ dst->e_version = bfd_h_get_32 (abfd, (bfd_byte *) src->e_version);
+ dst->e_entry = get_word (abfd, (bfd_byte *) src->e_entry);
+ dst->e_phoff = get_word (abfd, (bfd_byte *) src->e_phoff);
+ dst->e_shoff = get_word (abfd, (bfd_byte *) src->e_shoff);
+ dst->e_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->e_flags);
+ dst->e_ehsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_ehsize);
+ dst->e_phentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phentsize);
+ dst->e_phnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phnum);
+ dst->e_shentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shentsize);
+ dst->e_shnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shnum);
+ dst->e_shstrndx = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shstrndx);
+}
+
+/* Translate an ELF file header in internal format into an ELF file header in
+ external format. */
+
+static void
+elf_swap_ehdr_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Ehdr *src;
+ Elf_External_Ehdr *dst;
+{
+ memcpy (dst->e_ident, src->e_ident, EI_NIDENT);
+ /* note that all elements of dst are *arrays of unsigned char* already... */
+ bfd_h_put_16 (abfd, src->e_type, dst->e_type);
+ bfd_h_put_16 (abfd, src->e_machine, dst->e_machine);
+ bfd_h_put_32 (abfd, src->e_version, dst->e_version);
+ put_word (abfd, src->e_entry, dst->e_entry);
+ put_word (abfd, src->e_phoff, dst->e_phoff);
+ put_word (abfd, src->e_shoff, dst->e_shoff);
+ bfd_h_put_32 (abfd, src->e_flags, dst->e_flags);
+ bfd_h_put_16 (abfd, src->e_ehsize, dst->e_ehsize);
+ bfd_h_put_16 (abfd, src->e_phentsize, dst->e_phentsize);
+ bfd_h_put_16 (abfd, src->e_phnum, dst->e_phnum);
+ bfd_h_put_16 (abfd, src->e_shentsize, dst->e_shentsize);
+ bfd_h_put_16 (abfd, src->e_shnum, dst->e_shnum);
+ bfd_h_put_16 (abfd, src->e_shstrndx, dst->e_shstrndx);
+}
+
+
+/* Translate an ELF section header table entry in external format into an
+ ELF section header table entry in internal format. */
+
+static void
+elf_swap_shdr_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Shdr *src;
+ Elf_Internal_Shdr *dst;
+{
+ dst->sh_name = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_name);
+ dst->sh_type = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_type);
+ dst->sh_flags = get_word (abfd, (bfd_byte *) src->sh_flags);
+ dst->sh_addr = get_word (abfd, (bfd_byte *) src->sh_addr);
+ dst->sh_offset = get_word (abfd, (bfd_byte *) src->sh_offset);
+ dst->sh_size = get_word (abfd, (bfd_byte *) src->sh_size);
+ dst->sh_link = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_link);
+ dst->sh_info = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_info);
+ dst->sh_addralign = get_word (abfd, (bfd_byte *) src->sh_addralign);
+ dst->sh_entsize = get_word (abfd, (bfd_byte *) src->sh_entsize);
+ /* we haven't done any processing on it yet, so... */
+ dst->rawdata = (void *) 0;
+}
+
+/* Translate an ELF section header table entry in internal format into an
+ ELF section header table entry in external format. */
+
+static void
+elf_swap_shdr_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Shdr *src;
+ Elf_External_Shdr *dst;
+{
+ /* note that all elements of dst are *arrays of unsigned char* already... */
+ bfd_h_put_32 (abfd, src->sh_name, dst->sh_name);
+ bfd_h_put_32 (abfd, src->sh_type, dst->sh_type);
+ put_word (abfd, src->sh_flags, dst->sh_flags);
+ put_word (abfd, src->sh_addr, dst->sh_addr);
+ put_word (abfd, src->sh_offset, dst->sh_offset);
+ put_word (abfd, src->sh_size, dst->sh_size);
+ bfd_h_put_32 (abfd, src->sh_link, dst->sh_link);
+ bfd_h_put_32 (abfd, src->sh_info, dst->sh_info);
+ put_word (abfd, src->sh_addralign, dst->sh_addralign);
+ put_word (abfd, src->sh_entsize, dst->sh_entsize);
+}
+
+
+/* Translate an ELF program header table entry in external format into an
+ ELF program header table entry in internal format. */
+
+static void
+elf_swap_phdr_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Phdr *src;
+ Elf_Internal_Phdr *dst;
+{
+ dst->p_type = bfd_h_get_32 (abfd, (bfd_byte *) src->p_type);
+ dst->p_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->p_flags);
+ dst->p_offset = get_word (abfd, (bfd_byte *) src->p_offset);
+ dst->p_vaddr = get_word (abfd, (bfd_byte *) src->p_vaddr);
+ dst->p_paddr = get_word (abfd, (bfd_byte *) src->p_paddr);
+ dst->p_filesz = get_word (abfd, (bfd_byte *) src->p_filesz);
+ dst->p_memsz = get_word (abfd, (bfd_byte *) src->p_memsz);
+ dst->p_align = get_word (abfd, (bfd_byte *) src->p_align);
+}
+
+static void
+elf_swap_phdr_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Phdr *src;
+ Elf_External_Phdr *dst;
+{
+ /* note that all elements of dst are *arrays of unsigned char* already... */
+ bfd_h_put_32 (abfd, src->p_type, dst->p_type);
+ put_word (abfd, src->p_offset, dst->p_offset);
+ put_word (abfd, src->p_vaddr, dst->p_vaddr);
+ put_word (abfd, src->p_paddr, dst->p_paddr);
+ put_word (abfd, src->p_filesz, dst->p_filesz);
+ put_word (abfd, src->p_memsz, dst->p_memsz);
+ bfd_h_put_32 (abfd, src->p_flags, dst->p_flags);
+ put_word (abfd, src->p_align, dst->p_align);
+}
+
+/* Translate an ELF reloc from external format to internal format. */
+INLINE void
+elf_swap_reloc_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Rel *src;
+ Elf_Internal_Rel *dst;
+{
+ dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset);
+ dst->r_info = get_word (abfd, (bfd_byte *) src->r_info);
+}
+
+INLINE void
+elf_swap_reloca_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Rela *src;
+ Elf_Internal_Rela *dst;
+{
+ dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset);
+ dst->r_info = get_word (abfd, (bfd_byte *) src->r_info);
+ dst->r_addend = get_word (abfd, (bfd_byte *) src->r_addend);
+}
+
+/* Translate an ELF reloc from internal format to external format. */
+INLINE void
+elf_swap_reloc_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Rel *src;
+ Elf_External_Rel *dst;
+{
+ put_word (abfd, src->r_offset, dst->r_offset);
+ put_word (abfd, src->r_info, dst->r_info);
+}
+
+INLINE void
+elf_swap_reloca_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Rela *src;
+ Elf_External_Rela *dst;
+{
+ put_word (abfd, src->r_offset, dst->r_offset);
+ put_word (abfd, src->r_info, dst->r_info);
+ put_word (abfd, src->r_addend, dst->r_addend);
+}
+
+INLINE void
+elf_swap_dyn_in (abfd, src, dst)
+ bfd *abfd;
+ const Elf_External_Dyn *src;
+ Elf_Internal_Dyn *dst;
+{
+ dst->d_tag = get_word (abfd, src->d_tag);
+ dst->d_un.d_val = get_word (abfd, src->d_un.d_val);
+}
+
+INLINE void
+elf_swap_dyn_out (abfd, src, dst)
+ bfd *abfd;
+ const Elf_Internal_Dyn *src;
+ Elf_External_Dyn *dst;
+{
+ put_word (abfd, src->d_tag, dst->d_tag);
+ put_word (abfd, src->d_un.d_val, dst->d_un.d_val);
+}
+
+/* String table creation/manipulation routines */
+
+static struct strtab *
+bfd_new_strtab (abfd)
+ bfd *abfd;
+{
+ struct strtab *ss;
+
+ ss = (struct strtab *) malloc (sizeof (struct strtab));
+ if (!ss)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+ ss->tab = malloc (1);
+ if (!ss->tab)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+ *ss->tab = 0;
+ ss->nentries = 0;
+ ss->length = 1;
+
+ return ss;
+}
+
+static unsigned long
+bfd_add_to_strtab (abfd, ss, str)
+ bfd *abfd;
+ struct strtab *ss;
+ const char *str;
+{
+ /* should search first, but for now: */
+ /* include the trailing NUL */
+ int ln = strlen (str) + 1;
+
+ /* FIXME: This is slow. Also, we could combine this with the a.out
+ string table building and use a hash table, although it might not
+ be worth it since ELF symbols don't include debugging information
+ and thus have much less overlap. */
+ ss->tab = realloc (ss->tab, ss->length + ln);
+ if (ss->tab == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return (unsigned long) -1;
+ }
+
+ strcpy (ss->tab + ss->length, str);
+ ss->nentries++;
+ ss->length += ln;
+
+ return ss->length - ln;
+}
+
+static int
+bfd_add_2_to_strtab (abfd, ss, str, str2)
+ bfd *abfd;
+ struct strtab *ss;
+ char *str;
+ CONST char *str2;
+{
+ /* should search first, but for now: */
+ /* include the trailing NUL */
+ int ln = strlen (str) + strlen (str2) + 1;
+
+ /* should this be using obstacks? */
+ if (ss->length)
+ ss->tab = realloc (ss->tab, ss->length + ln);
+ else
+ ss->tab = malloc (ln);
+
+ BFD_ASSERT (ss->tab != 0); /* FIXME */
+ strcpy (ss->tab + ss->length, str);
+ strcpy (ss->tab + ss->length + strlen (str), str2);
+ ss->nentries++;
+ ss->length += ln;
+
+ return ss->length - ln;
+}
+
+/* ELF .o/exec file reading */
+
+/* Create a new bfd section from an ELF section header. */
+
+static boolean
+bfd_section_from_shdr (abfd, shindex)
+ bfd *abfd;
+ unsigned int shindex;
+{
+ Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex];
+ Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd);
+ char *name;
+
+ name = elf_string_from_elf_strtab (abfd, hdr->sh_name);
+
+ switch (hdr->sh_type)
+ {
+ case SHT_NULL:
+ /* Inactive section. Throw it away. */
+ return true;
+
+ case SHT_PROGBITS: /* Normal section with contents. */
+ case SHT_DYNAMIC: /* Dynamic linking information. */
+ case SHT_NOBITS: /* .bss section. */
+ case SHT_HASH: /* .hash section. */
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+
+ case SHT_SYMTAB: /* A symbol table */
+ if (elf_onesymtab (abfd) == shindex)
+ return true;
+
+ BFD_ASSERT (hdr->sh_entsize == sizeof (Elf_External_Sym));
+ BFD_ASSERT (elf_onesymtab (abfd) == 0);
+ elf_onesymtab (abfd) = shindex;
+ elf_tdata (abfd)->symtab_hdr = *hdr;
+ elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_hdr;
+ abfd->flags |= HAS_SYMS;
+ return true;
+
+ case SHT_DYNSYM: /* A dynamic symbol table */
+ if (elf_dynsymtab (abfd) == shindex)
+ return true;
+
+ BFD_ASSERT (hdr->sh_entsize == sizeof (Elf_External_Sym));
+ BFD_ASSERT (elf_dynsymtab (abfd) == 0);
+ elf_dynsymtab (abfd) = shindex;
+ elf_tdata (abfd)->dynsymtab_hdr = *hdr;
+ elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->dynsymtab_hdr;
+ abfd->flags |= HAS_SYMS;
+
+ /* Besides being a symbol table, we also treat this as a regular
+ section, so that objcopy can handle it. */
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+
+ case SHT_STRTAB: /* A string table */
+ if (hdr->rawdata != NULL)
+ return true;
+ if (ehdr->e_shstrndx == shindex)
+ {
+ elf_tdata (abfd)->shstrtab_hdr = *hdr;
+ elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
+ hdr->rawdata = (PTR) & elf_tdata (abfd)->shstrtab_hdr;
+ return true;
+ }
+ {
+ unsigned int i;
+
+ for (i = 1; i < ehdr->e_shnum; i++)
+ {
+ Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
+ if (hdr2->sh_link == shindex)
+ {
+ if (! bfd_section_from_shdr (abfd, i))
+ return false;
+ if (elf_onesymtab (abfd) == i)
+ {
+ elf_tdata (abfd)->strtab_hdr = *hdr;
+ elf_elfsections (abfd)[shindex] =
+ &elf_tdata (abfd)->strtab_hdr;
+ return true;
+ }
+ if (elf_dynsymtab (abfd) == i)
+ {
+ elf_tdata (abfd)->dynstrtab_hdr = *hdr;
+ elf_elfsections (abfd)[shindex] =
+ &elf_tdata (abfd)->dynstrtab_hdr;
+ /* We also treat this as a regular section, so
+ that objcopy can handle it. */
+ break;
+ }
+#if 0 /* Not handling other string tables specially right now. */
+ hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */
+ /* We have a strtab for some random other section. */
+ newsect = (asection *) hdr2->rawdata;
+ if (!newsect)
+ break;
+ hdr->rawdata = (PTR) newsect;
+ hdr2 = &elf_section_data (newsect)->str_hdr;
+ *hdr2 = *hdr;
+ elf_elfsections (abfd)[shindex] = hdr2;
+#endif
+ }
+ }
+ }
+
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+
+ case SHT_REL:
+ case SHT_RELA:
+ /* *These* do a lot of work -- but build no sections! */
+ {
+ asection *target_sect;
+ Elf_Internal_Shdr *hdr2;
+ int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
+
+ /* Get the symbol table. */
+ if (! bfd_section_from_shdr (abfd, hdr->sh_link))
+ return false;
+
+ /* If this reloc section does not use the main symbol table we
+ don't treat it as a reloc section. BFD can't adequately
+ represent such a section, so at least for now, we don't
+ try. We just present it as a normal section. */
+ if (hdr->sh_link != elf_onesymtab (abfd))
+ return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
+
+ /* Don't allow REL relocations on a machine that uses RELA and
+ vice versa. */
+ /* @@ Actually, the generic ABI does suggest that both might be
+ used in one file. But the four ABI Processor Supplements I
+ have access to right now all specify that only one is used on
+ each of those architectures. It's conceivable that, e.g., a
+ bunch of absolute 32-bit relocs might be more compact in REL
+ form even on a RELA machine... */
+ BFD_ASSERT (use_rela_p
+ ? (hdr->sh_type == SHT_RELA
+ && hdr->sh_entsize == sizeof (Elf_External_Rela))
+ : (hdr->sh_type == SHT_REL
+ && hdr->sh_entsize == sizeof (Elf_External_Rel)));
+
+ if (! bfd_section_from_shdr (abfd, hdr->sh_info))
+ return false;
+ target_sect = section_from_elf_index (abfd, hdr->sh_info);
+ if (target_sect == NULL
+ || elf_section_data (target_sect) == NULL)
+ return false;
+
+ hdr2 = &elf_section_data (target_sect)->rel_hdr;
+ *hdr2 = *hdr;
+ elf_elfsections (abfd)[shindex] = hdr2;
+ target_sect->reloc_count = hdr->sh_size / hdr->sh_entsize;
+ target_sect->flags |= SEC_RELOC;
+ target_sect->relocation = NULL;
+ target_sect->rel_filepos = hdr->sh_offset;
+ abfd->flags |= HAS_RELOC;
+ return true;
+ }
+ break;
+
+ case SHT_NOTE:
+#if 0
+ fprintf (stderr, "Note Sections not yet supported.\n");
+ BFD_FAIL ();
+#endif
+ break;
+
+ case SHT_SHLIB:
+#if 0
+ fprintf (stderr, "SHLIB Sections not supported (and non conforming.)\n");
+#endif
+ return true;
+
+ default:
+ /* Check for any processor-specific section types. */
+ {
+ struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ if (bed->elf_backend_section_from_shdr)
+ (*bed->elf_backend_section_from_shdr) (abfd, hdr, name);
+ }
+ break;
+ }
+
+ return true;
+}
+
+boolean
+elf_new_section_hook (abfd, sec)
+ bfd *abfd
+ ;
+ asection *sec;
+{
+ struct bfd_elf_section_data *sdata;
+
+ sdata = (struct bfd_elf_section_data *) bfd_alloc (abfd, sizeof (*sdata));
+ if (!sdata)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ sec->used_by_bfd = (PTR) sdata;
+ memset (sdata, 0, sizeof (*sdata));
+ return true;
+}
+
+/* Create a new bfd section from an ELF program header.
+
+ Since program segments have no names, we generate a synthetic name
+ of the form segment<NUM>, where NUM is generally the index in the
+ program header table. For segments that are split (see below) we
+ generate the names segment<NUM>a and segment<NUM>b.
+
+ Note that some program segments may have a file size that is different than
+ (less than) the memory size. All this means is that at execution the
+ system must allocate the amount of memory specified by the memory size,
+ but only initialize it with the first "file size" bytes read from the
+ file. This would occur for example, with program segments consisting
+ of combined data+bss.
+
+ To handle the above situation, this routine generates TWO bfd sections
+ for the single program segment. The first has the length specified by
+ the file size of the segment, and the second has the length specified
+ by the difference between the two sizes. In effect, the segment is split
+ into it's initialized and uninitialized parts.
+
+ */
+
+static boolean
+bfd_section_from_phdr (abfd, hdr, index)
+ bfd *abfd;
+ Elf_Internal_Phdr *hdr;
+ int index;
+{
+ asection *newsect;
+ char *name;
+ char namebuf[64];
+ int split;
+
+ split = ((hdr->p_memsz > 0) &&
+ (hdr->p_filesz > 0) &&
+ (hdr->p_memsz > hdr->p_filesz));
+ sprintf (namebuf, split ? "segment%da" : "segment%d", index);
+ name = bfd_alloc (abfd, strlen (namebuf) + 1);
+ if (!name)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ strcpy (name, namebuf);
+ newsect = bfd_make_section (abfd, name);
+ if (newsect == NULL)
+ return false;
+ newsect->vma = hdr->p_vaddr;
+ newsect->_raw_size = hdr->p_filesz;
+ newsect->filepos = hdr->p_offset;
+ newsect->flags |= SEC_HAS_CONTENTS;
+ if (hdr->p_type == PT_LOAD)
+ {
+ newsect->flags |= SEC_ALLOC;
+ newsect->flags |= SEC_LOAD;
+ if (hdr->p_flags & PF_X)
+ {
+ /* FIXME: all we known is that it has execute PERMISSION,
+ may be data. */
+ newsect->flags |= SEC_CODE;
+ }
+ }
+ if (!(hdr->p_flags & PF_W))
+ {
+ newsect->flags |= SEC_READONLY;
+ }
+
+ if (split)
+ {
+ sprintf (namebuf, "segment%db", index);
+ name = bfd_alloc (abfd, strlen (namebuf) + 1);
+ if (!name)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ strcpy (name, namebuf);
+ newsect = bfd_make_section (abfd, name);
+ if (newsect == NULL)
+ return false;
+ newsect->vma = hdr->p_vaddr + hdr->p_filesz;
+ newsect->_raw_size = hdr->p_memsz - hdr->p_filesz;
+ if (hdr->p_type == PT_LOAD)
+ {
+ newsect->flags |= SEC_ALLOC;
+ if (hdr->p_flags & PF_X)
+ newsect->flags |= SEC_CODE;
+ }
+ if (!(hdr->p_flags & PF_W))
+ newsect->flags |= SEC_READONLY;
+ }
+
+ return true;
+}
+
+/* Begin processing a given object.
+
+ First we validate the file by reading in the ELF header and checking
+ the magic number. */
+
+static INLINE boolean
+elf_file_p (x_ehdrp)
+ Elf_External_Ehdr *x_ehdrp;
+{
+ return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0)
+ && (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1)
+ && (x_ehdrp->e_ident[EI_MAG2] == ELFMAG2)
+ && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3));
+}
+
+/* Check to see if the file associated with ABFD matches the target vector
+ that ABFD points to.
+
+ Note that we may be called several times with the same ABFD, but different
+ target vectors, most of which will not match. We have to avoid leaving
+ any side effects in ABFD, or any data it points to (like tdata), if the
+ file does not match the target vector. */
+
+const bfd_target *
+elf_object_p (abfd)
+ bfd *abfd;
+{
+ Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_External_Shdr x_shdr; /* Section header table entry, external form */
+ Elf_Internal_Shdr *i_shdrp = NULL; /* Section header table, internal form */
+ unsigned int shindex;
+ char *shstrtab; /* Internal copy of section header stringtab */
+ struct elf_backend_data *ebd;
+ struct elf_obj_tdata *preserved_tdata = elf_tdata (abfd);
+ struct elf_obj_tdata *new_tdata = NULL;
+
+ /* Read in the ELF header in external format. */
+
+ if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr))
+ {
+ if (bfd_get_error () != bfd_error_system_call)
+ goto got_wrong_format_error;
+ else
+ goto got_no_match;
+ }
+
+ /* Now check to see if we have a valid ELF file, and one that BFD can
+ make use of. The magic number must match, the address size ('class')
+ and byte-swapping must match our XVEC entry, and it must have a
+ section header table (FIXME: See comments re sections at top of this
+ file). */
+
+ if ((elf_file_p (&x_ehdr) == false) ||
+ (x_ehdr.e_ident[EI_VERSION] != EV_CURRENT) ||
+ (x_ehdr.e_ident[EI_CLASS] != ELFCLASS))
+ goto got_wrong_format_error;
+
+ /* Check that file's byte order matches xvec's */
+ switch (x_ehdr.e_ident[EI_DATA])
+ {
+ case ELFDATA2MSB: /* Big-endian */
+ if (!abfd->xvec->header_byteorder_big_p)
+ goto got_wrong_format_error;
+ break;
+ case ELFDATA2LSB: /* Little-endian */
+ if (abfd->xvec->header_byteorder_big_p)
+ goto got_wrong_format_error;
+ break;
+ case ELFDATANONE: /* No data encoding specified */
+ default: /* Unknown data encoding specified */
+ goto got_wrong_format_error;
+ }
+
+ /* Allocate an instance of the elf_obj_tdata structure and hook it up to
+ the tdata pointer in the bfd. */
+
+ new_tdata = ((struct elf_obj_tdata *)
+ bfd_zalloc (abfd, sizeof (struct elf_obj_tdata)));
+ if (new_tdata == NULL)
+ goto got_no_memory_error;
+ elf_tdata (abfd) = new_tdata;
+
+ /* Now that we know the byte order, swap in the rest of the header */
+ i_ehdrp = elf_elfheader (abfd);
+ elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
+#if DEBUG & 1
+ elf_debug_file (i_ehdrp);
+#endif
+
+ /* If there is no section header table, we're hosed. */
+ if (i_ehdrp->e_shoff == 0)
+ goto got_wrong_format_error;
+
+ /* As a simple sanity check, verify that the what BFD thinks is the
+ size of each section header table entry actually matches the size
+ recorded in the file. */
+ if (i_ehdrp->e_shentsize != sizeof (x_shdr))
+ goto got_wrong_format_error;
+
+ ebd = get_elf_backend_data (abfd);
+
+ /* Check that the ELF e_machine field matches what this particular
+ BFD format expects. */
+ if (ebd->elf_machine_code != i_ehdrp->e_machine)
+ {
+ const bfd_target * const *target_ptr;
+
+ if (ebd->elf_machine_code != EM_NONE)
+ goto got_wrong_format_error;
+
+ /* This is the generic ELF target. Let it match any ELF target
+ for which we do not have a specific backend. */
+ for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
+ {
+ struct elf_backend_data *back;
+
+ if ((*target_ptr)->flavour != bfd_target_elf_flavour)
+ continue;
+ back = (struct elf_backend_data *) (*target_ptr)->backend_data;
+ if (back->elf_machine_code == i_ehdrp->e_machine)
+ {
+ /* target_ptr is an ELF backend which matches this
+ object file, so reject the generic ELF target. */
+ goto got_wrong_format_error;
+ }
+ }
+ }
+
+ if (i_ehdrp->e_type == ET_EXEC)
+ abfd->flags |= EXEC_P;
+ else if (i_ehdrp->e_type == ET_DYN)
+ abfd->flags |= DYNAMIC;
+
+ if (i_ehdrp->e_phnum > 0)
+ abfd->flags |= D_PAGED;
+
+ if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0))
+ goto got_no_match;
+
+ /* Remember the entry point specified in the ELF file header. */
+ bfd_get_start_address (abfd) = i_ehdrp->e_entry;
+
+ /* Allocate space for a copy of the section header table in
+ internal form, seek to the section header table in the file,
+ read it in, and convert it to internal form. */
+ i_shdrp = ((Elf_Internal_Shdr *)
+ bfd_alloc (abfd, sizeof (*i_shdrp) * i_ehdrp->e_shnum));
+ elf_elfsections (abfd) = ((Elf_Internal_Shdr **)
+ bfd_alloc (abfd,
+ sizeof (i_shdrp) * i_ehdrp->e_shnum));
+ if (!i_shdrp || !elf_elfsections (abfd))
+ goto got_no_memory_error;
+ if (bfd_seek (abfd, i_ehdrp->e_shoff, SEEK_SET) != 0)
+ goto got_no_match;
+ for (shindex = 0; shindex < i_ehdrp->e_shnum; shindex++)
+ {
+ if (bfd_read ((PTR) & x_shdr, sizeof x_shdr, 1, abfd) != sizeof (x_shdr))
+ goto got_no_match;
+ elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
+ elf_elfsections (abfd)[shindex] = i_shdrp + shindex;
+ }
+ if (i_ehdrp->e_shstrndx)
+ {
+ if (! bfd_section_from_shdr (abfd, i_ehdrp->e_shstrndx))
+ goto got_no_match;
+ }
+
+ /* Read in the string table containing the names of the sections. We
+ will need the base pointer to this table later. */
+ /* We read this inline now, so that we don't have to go through
+ bfd_section_from_shdr with it (since this particular strtab is
+ used to find all of the ELF section names.) */
+
+ shstrtab = elf_get_str_section (abfd, i_ehdrp->e_shstrndx);
+ if (!shstrtab)
+ goto got_no_match;
+
+ /* Once all of the section headers have been read and converted, we
+ can start processing them. Note that the first section header is
+ a dummy placeholder entry, so we ignore it. */
+
+ for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++)
+ {
+ if (! bfd_section_from_shdr (abfd, shindex))
+ goto got_no_match;
+ }
+
+ /* Let the backend double check the format and override global
+ information. */
+ if (ebd->elf_backend_object_p)
+ {
+ if ((*ebd->elf_backend_object_p) (abfd) == false)
+ goto got_wrong_format_error;
+ }
+
+ return (abfd->xvec);
+
+got_wrong_format_error:
+ bfd_set_error (bfd_error_wrong_format);
+ goto got_no_match;
+got_no_memory_error:
+ bfd_set_error (bfd_error_no_memory);
+ goto got_no_match;
+got_no_match:
+ if (new_tdata != NULL
+ && new_tdata->elf_sect_ptr != NULL)
+ bfd_release (abfd, new_tdata->elf_sect_ptr);
+ if (i_shdrp != NULL)
+ bfd_release (abfd, i_shdrp);
+ if (new_tdata != NULL)
+ bfd_release (abfd, new_tdata);
+ elf_tdata (abfd) = preserved_tdata;
+ return (NULL);
+}
+
+
+/* ELF .o/exec file writing */
+
+/* Takes a bfd and a symbol, returns a pointer to the elf specific area
+ of the symbol if there is one. */
+static INLINE elf_symbol_type *
+elf_symbol_from (ignore_abfd, symbol)
+ bfd *ignore_abfd;
+ asymbol *symbol;
+{
+ if (symbol->the_bfd->xvec->flavour != bfd_target_elf_flavour)
+ return 0;
+
+ if (symbol->the_bfd->tdata.elf_obj_data == (struct elf_obj_tdata *) NULL)
+ return 0;
+
+ return (elf_symbol_type *) symbol;
+}
+
+void
+write_relocs (abfd, sec, xxx)
+ bfd *abfd;
+ asection *sec;
+ PTR xxx;
+{
+ Elf_Internal_Shdr *rela_hdr;
+ Elf_External_Rela *outbound_relocas;
+ Elf_External_Rel *outbound_relocs;
+ int idx;
+ int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
+ asymbol *last_sym = 0;
+ int last_sym_idx = 9999999; /* should always be written before use */
+
+ if ((sec->flags & SEC_RELOC) == 0)
+ return;
+
+ /* The linker backend writes the relocs out itself, and sets the
+ reloc_count field to zero to inhibit writing them here. Also,
+ sometimes the SEC_RELOC flag gets set even when there aren't any
+ relocs. */
+ if (sec->reloc_count == 0)
+ return;
+
+ rela_hdr = &elf_section_data (sec)->rel_hdr;
+
+ rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count;
+ rela_hdr->contents = (void *) bfd_alloc (abfd, rela_hdr->sh_size);
+ if (!rela_hdr->contents)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ abort (); /* FIXME */
+ }
+
+ /* orelocation has the data, reloc_count has the count... */
+ if (use_rela_p)
+ {
+ outbound_relocas = (Elf_External_Rela *) rela_hdr->contents;
+
+ for (idx = 0; idx < sec->reloc_count; idx++)
+ {
+ Elf_Internal_Rela dst_rela;
+ Elf_External_Rela *src_rela;
+ arelent *ptr;
+ asymbol *sym;
+ int n;
+
+ ptr = sec->orelocation[idx];
+ src_rela = outbound_relocas + idx;
+ if (!(abfd->flags & EXEC_P))
+ dst_rela.r_offset = ptr->address - sec->vma;
+ else
+ dst_rela.r_offset = ptr->address;
+
+ sym = *ptr->sym_ptr_ptr;
+ if (sym == last_sym)
+ n = last_sym_idx;
+ else
+ {
+ last_sym = sym;
+ last_sym_idx = n = elf_symbol_from_bfd_symbol (abfd, &sym);
+ }
+ dst_rela.r_info = ELF_R_INFO (n, ptr->howto->type);
+
+ dst_rela.r_addend = ptr->addend;
+ elf_swap_reloca_out (abfd, &dst_rela, src_rela);
+ }
+ }
+ else
+ /* REL relocations */
+ {
+ outbound_relocs = (Elf_External_Rel *) rela_hdr->contents;
+
+ for (idx = 0; idx < sec->reloc_count; idx++)
+ {
+ Elf_Internal_Rel dst_rel;
+ Elf_External_Rel *src_rel;
+ arelent *ptr;
+ int n;
+ asymbol *sym;
+
+ ptr = sec->orelocation[idx];
+ sym = *ptr->sym_ptr_ptr;
+ src_rel = outbound_relocs + idx;
+ if (!(abfd->flags & EXEC_P))
+ dst_rel.r_offset = ptr->address - sec->vma;
+ else
+ dst_rel.r_offset = ptr->address;
+
+ if (sym == last_sym)
+ n = last_sym_idx;
+ else
+ {
+ last_sym = sym;
+ last_sym_idx = n = elf_symbol_from_bfd_symbol (abfd, &sym);
+ }
+ dst_rel.r_info = ELF_R_INFO (n, ptr->howto->type);
+
+ elf_swap_reloc_out (abfd, &dst_rel, src_rel);
+ }
+ }
+}
+
+/* Set up an ELF internal section header for a section. */
+
+/*ARGSUSED*/
+static void
+elf_fake_sections (abfd, asect, ignore)
+ bfd *abfd;
+ asection *asect;
+ PTR ignore;
+{
+ Elf_Internal_Shdr *this_hdr;
+
+ this_hdr = &elf_section_data (asect)->this_hdr;
+
+ this_hdr->sh_name = bfd_add_to_strtab (abfd, elf_shstrtab (abfd),
+ asect->name);
+ if (this_hdr->sh_name == (unsigned long) -1)
+ abort (); /* FIXME */
+
+ this_hdr->sh_flags = 0;
+ if ((asect->flags & SEC_ALLOC) != 0)
+ this_hdr->sh_addr = asect->vma;
+ else
+ this_hdr->sh_addr = 0;
+ this_hdr->sh_offset = 0;
+ this_hdr->sh_size = asect->_raw_size;
+ this_hdr->sh_link = 0;
+ this_hdr->sh_info = 0;
+ this_hdr->sh_addralign = 1 << asect->alignment_power;
+ this_hdr->sh_entsize = 0;
+
+ this_hdr->rawdata = (PTR) asect;
+ this_hdr->contents = NULL;
+ this_hdr->size = 0;
+
+ /* FIXME: This should not be based on section names. */
+ if (strcmp (asect->name, ".dynstr") == 0)
+ this_hdr->sh_type = SHT_STRTAB;
+ else if (strcmp (asect->name, ".hash") == 0)
+ {
+ this_hdr->sh_type = SHT_HASH;
+ this_hdr->sh_entsize = ARCH_SIZE / 8;
+ }
+ else if (strcmp (asect->name, ".dynsym") == 0)
+ {
+ this_hdr->sh_type = SHT_DYNSYM;
+ this_hdr->sh_entsize = sizeof (Elf_External_Sym);
+ }
+ else if (strcmp (asect->name, ".dynamic") == 0)
+ {
+ this_hdr->sh_type = SHT_DYNAMIC;
+ this_hdr->sh_entsize = sizeof (Elf_External_Dyn);
+ }
+ else if (strncmp (asect->name, ".rel.", 5) == 0)
+ {
+ this_hdr->sh_type = SHT_REL;
+ this_hdr->sh_entsize = sizeof (Elf_External_Rel);
+ }
+ else if (strncmp (asect->name, ".rela.", 6) == 0)
+ {
+ this_hdr->sh_type = SHT_RELA;
+ this_hdr->sh_entsize = sizeof (Elf_External_Rela);
+ }
+ else if (strcmp (asect->name, ".note") == 0)
+ this_hdr->sh_type = SHT_NOTE;
+ else if (strncmp (asect->name, ".stab", 5) == 0
+ && strcmp (asect->name + strlen (asect->name) - 3, "str") == 0)
+ this_hdr->sh_type = SHT_STRTAB;
+ else if ((asect->flags & SEC_ALLOC) != 0
+ && (asect->flags & SEC_LOAD) != 0)
+ this_hdr->sh_type = SHT_PROGBITS;
+ else if ((asect->flags & SEC_ALLOC) != 0
+ && ((asect->flags & SEC_LOAD) == 0))
+ {
+ BFD_ASSERT (strcmp (asect->name, ".bss") == 0
+ || strcmp (asect->name, ".sbss") == 0);
+ this_hdr->sh_type = SHT_NOBITS;
+ }
+ else
+ {
+ /* Who knows? */
+ this_hdr->sh_type = SHT_PROGBITS;
+ }
+
+ if ((asect->flags & SEC_ALLOC) != 0)
+ this_hdr->sh_flags |= SHF_ALLOC;
+ if ((asect->flags & SEC_READONLY) == 0)
+ this_hdr->sh_flags |= SHF_WRITE;
+ if ((asect->flags & SEC_CODE) != 0)
+ this_hdr->sh_flags |= SHF_EXECINSTR;
+
+ /* Check for processor-specific section types. */
+ {
+ struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ if (bed->elf_backend_fake_sections)
+ (*bed->elf_backend_fake_sections) (abfd, this_hdr, asect);
+ }
+
+ /* If the section has relocs, set up a section header for the
+ SHT_REL[A] section. */
+ if ((asect->flags & SEC_RELOC) != 0)
+ {
+ Elf_Internal_Shdr *rela_hdr;
+ int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
+
+ rela_hdr = &elf_section_data (asect)->rel_hdr;
+ rela_hdr->sh_name =
+ bfd_add_2_to_strtab (abfd, elf_shstrtab (abfd),
+ use_rela_p ? ".rela" : ".rel",
+ asect->name);
+ rela_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
+ rela_hdr->sh_entsize = (use_rela_p
+ ? sizeof (Elf_External_Rela)
+ : sizeof (Elf_External_Rel));
+ rela_hdr->sh_addralign = FILE_ALIGN;
+ rela_hdr->sh_flags = 0;
+ rela_hdr->sh_addr = 0;
+ rela_hdr->sh_size = 0;
+ rela_hdr->sh_offset = 0;
+ rela_hdr->size = 0;
+ }
+}
+
+/* Assign all ELF section numbers. The dummy first section is handled here
+ too. The link/info pointers for the standard section types are filled
+ in here too, while we're at it. */
+
+static boolean
+assign_section_numbers (abfd)
+ bfd *abfd;
+{
+ struct elf_obj_tdata *t = elf_tdata (abfd);
+ asection *sec;
+ unsigned int section_number;
+ Elf_Internal_Shdr **i_shdrp;
+
+ section_number = 1;
+
+ for (sec = abfd->sections; sec; sec = sec->next)
+ {
+ struct bfd_elf_section_data *d = elf_section_data (sec);
+
+ d->this_idx = section_number++;
+ if ((sec->flags & SEC_RELOC) == 0)
+ d->rel_idx = 0;
+ else
+ d->rel_idx = section_number++;
+ }
+
+ t->shstrtab_section = section_number++;
+ elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
+ t->shstrtab_hdr.sh_size = elf_shstrtab (abfd)->length;
+ t->shstrtab_hdr.contents = (PTR) elf_shstrtab (abfd)->tab;
+
+ if (abfd->symcount > 0)
+ {
+ t->symtab_section = section_number++;
+ t->strtab_section = section_number++;
+ }
+
+ elf_elfheader (abfd)->e_shnum = section_number;
+
+ /* Set up the list of section header pointers, in agreement with the
+ indices. */
+ i_shdrp = ((Elf_Internal_Shdr **)
+ bfd_alloc (abfd, section_number * sizeof (Elf_Internal_Shdr *)));
+ if (i_shdrp == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ i_shdrp[0] = ((Elf_Internal_Shdr *)
+ bfd_alloc (abfd, sizeof (Elf_Internal_Shdr)));
+ if (i_shdrp[0] == NULL)
+ {
+ bfd_release (abfd, i_shdrp);
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ memset (i_shdrp[0], 0, sizeof (Elf_Internal_Shdr));
+
+ elf_elfsections (abfd) = i_shdrp;
+
+ i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
+ if (abfd->symcount > 0)
+ {
+ i_shdrp[t->symtab_section] = &t->symtab_hdr;
+ i_shdrp[t->strtab_section] = &t->strtab_hdr;
+ t->symtab_hdr.sh_link = t->strtab_section;
+ }
+ for (sec = abfd->sections; sec; sec = sec->next)
+ {
+ struct bfd_elf_section_data *d = elf_section_data (sec);
+ asection *s;
+ const char *name;
+
+ i_shdrp[d->this_idx] = &d->this_hdr;
+ if (d->rel_idx != 0)
+ i_shdrp[d->rel_idx] = &d->rel_hdr;
+
+ /* Fill in the sh_link and sh_info fields while we're at it. */
+
+ /* sh_link of a reloc section is the section index of the symbol
+ table. sh_info is the section index of the section to which
+ the relocation entries apply. */
+ if (d->rel_idx != 0)
+ {
+ d->rel_hdr.sh_link = t->symtab_section;
+ d->rel_hdr.sh_info = d->this_idx;
+ }
+
+ switch (d->this_hdr.sh_type)
+ {
+ case SHT_REL:
+ case SHT_RELA:
+ /* A reloc section which we are treating as a normal BFD
+ section. sh_link is the section index of the symbol
+ table. sh_info is the section index of the section to
+ which the relocation entries apply. We assume that an
+ allocated reloc section uses the dynamic symbol table.
+ FIXME: How can we be sure? */
+ s = bfd_get_section_by_name (abfd, ".dynsym");
+ if (s != NULL)
+ d->this_hdr.sh_link = elf_section_data (s)->this_idx;
+
+ /* We look up the section the relocs apply to by name. */
+ name = sec->name;
+ if (d->this_hdr.sh_type == SHT_REL)
+ name += 4;
+ else
+ name += 5;
+ s = bfd_get_section_by_name (abfd, name);
+ if (s != NULL)
+ d->this_hdr.sh_info = elf_section_data (s)->this_idx;
+ break;
+
+ case SHT_STRTAB:
+ /* We assume that a section named .stab*str is a stabs
+ string section. We look for a section with the same name
+ but without the trailing ``str'', and set its sh_link
+ field to point to this section. */
+ if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0
+ && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
+ {
+ size_t len;
+ char *alc;
+
+ len = strlen (sec->name);
+ alc = (char *) malloc (len - 2);
+ if (alc == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ strncpy (alc, sec->name, len - 3);
+ alc[len - 3] = '\0';
+ s = bfd_get_section_by_name (abfd, alc);
+ free (alc);
+ if (s != NULL)
+ {
+ elf_section_data (s)->this_hdr.sh_link = d->this_idx;
+
+ /* This is a .stab section. */
+ elf_section_data (s)->this_hdr.sh_entsize =
+ 4 + 2 * (ARCH_SIZE / 8);
+ }
+ }
+ break;
+
+ case SHT_DYNAMIC:
+ case SHT_DYNSYM:
+ /* sh_link is the section header index of the string table
+ used for the dynamic entries or symbol table. */
+ s = bfd_get_section_by_name (abfd, ".dynstr");
+ if (s != NULL)
+ d->this_hdr.sh_link = elf_section_data (s)->this_idx;
+ break;
+
+ case SHT_HASH:
+ /* sh_link is the section header index of the symbol table
+ this hash table is for. */
+ s = bfd_get_section_by_name (abfd, ".dynsym");
+ if (s != NULL)
+ d->this_hdr.sh_link = elf_section_data (s)->this_idx;
+ break;
+ }
+ }
+
+ return true;
+}
+
+/* Map symbol from it's internal number to the external number, moving
+ all local symbols to be at the head of the list. */
+
+static INLINE int
+sym_is_global (abfd, sym)
+ bfd *abfd;
+ asymbol *sym;
+{
+ /* If the backend has a special mapping, use it. */
+ if (get_elf_backend_data (abfd)->elf_backend_sym_is_global)
+ return ((*get_elf_backend_data (abfd)->elf_backend_sym_is_global)
+ (abfd, sym));
+
+ if (sym->flags & (BSF_GLOBAL | BSF_WEAK))
+ {
+ if (sym->flags & BSF_LOCAL)
+ abort ();
+ return 1;
+ }
+ if (sym->section == 0)
+ {
+ /* Is this valid? */
+ abort ();
+
+ return 1;
+ }
+ if (bfd_is_und_section (sym->section))
+ return 1;
+ if (bfd_is_com_section (sym->section))
+ return 1;
+ if (sym->flags & (BSF_LOCAL | BSF_SECTION_SYM | BSF_FILE))
+ return 0;
+ return 0;
+}
+
+static boolean
+elf_map_symbols (abfd)
+ bfd *abfd;
+{
+ int symcount = bfd_get_symcount (abfd);
+ asymbol **syms = bfd_get_outsymbols (abfd);
+ asymbol **sect_syms;
+ int num_locals = 0;
+ int num_globals = 0;
+ int num_locals2 = 0;
+ int num_globals2 = 0;
+ int max_index = 0;
+ int num_sections = 0;
+ Elf_Sym_Extra *sym_extra;
+ int idx;
+ asection *asect;
+
+#ifdef DEBUG
+ fprintf (stderr, "elf_map_symbols\n");
+ fflush (stderr);
+#endif
+
+ /* Add local symbols for each section for which there are relocs.
+ FIXME: How can we tell which sections have relocs at this point?
+ Will reloc_count always be accurate? Actually, I think most ELF
+ targets create section symbols for all sections anyhow. */
+ for (asect = abfd->sections; asect; asect = asect->next)
+ {
+ if (max_index < asect->index)
+ max_index = asect->index;
+ }
+
+ max_index++;
+ elf_num_section_syms (abfd) = max_index;
+ sect_syms = (asymbol **) bfd_zalloc (abfd, max_index * sizeof (asymbol *));
+ elf_section_syms (abfd) = sect_syms;
+
+ if (sect_syms == 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ for (asect = abfd->sections; asect; asect = asect->next)
+ {
+ asymbol *sym = bfd_make_empty_symbol (abfd);
+ if (!sym)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ sym->the_bfd = abfd;
+ sym->name = asect->name;
+ sym->value = asect->vma;
+ sym->flags = BSF_SECTION_SYM;
+ sym->section = asect;
+ sect_syms[asect->index] = sym;
+ num_sections++;
+#ifdef DEBUG
+ fprintf (stderr,
+ "creating section symbol, name = %s, value = 0x%.8lx, index = %d, section = 0x%.8lx\n",
+ asect->name, (long) asect->vma, asect->index, (long) asect);
+#endif
+ }
+
+ if (num_sections)
+ {
+ if (syms)
+ syms = (asymbol **) bfd_realloc (abfd, syms,
+ ((symcount + num_sections + 1)
+ * sizeof (asymbol *)));
+ else
+ syms = (asymbol **) bfd_alloc (abfd,
+ (num_sections + 1) * sizeof (asymbol *));
+ if (!syms)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ for (asect = abfd->sections; asect; asect = asect->next)
+ {
+ if (sect_syms[asect->index])
+ syms[symcount++] = sect_syms[asect->index];
+ }
+
+ syms[symcount] = (asymbol *) 0;
+ bfd_set_symtab (abfd, syms, symcount);
+ }
+
+ elf_sym_extra (abfd) = sym_extra
+ = (Elf_Sym_Extra *) bfd_alloc (abfd, symcount * sizeof (Elf_Sym_Extra));
+ if (!sym_extra)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ /* Identify and classify all of the symbols. */
+ for (idx = 0; idx < symcount; idx++)
+ {
+ if (!sym_is_global (abfd, syms[idx]))
+ num_locals++;
+ else
+ num_globals++;
+ }
+
+ /* Now provide mapping information. Add +1 for skipping over the
+ dummy symbol. */
+ for (idx = 0; idx < symcount; idx++)
+ {
+ syms[idx]->udata = (PTR) & sym_extra[idx];
+ if (!sym_is_global (abfd, syms[idx]))
+ sym_extra[idx].elf_sym_num = 1 + num_locals2++;
+ else
+ sym_extra[idx].elf_sym_num = 1 + num_locals + num_globals2++;
+ }
+
+ elf_num_locals (abfd) = num_locals;
+ elf_num_globals (abfd) = num_globals;
+ return true;
+}
+
+/* Compute the file positions we are going to put the sections at, and
+ otherwise prepare to begin writing out the ELF file. If LINK_INFO
+ is not NULL, this is being called by the ELF backend linker. */
+
+static boolean
+elf_compute_section_file_positions (abfd, link_info)
+ bfd *abfd;
+ struct bfd_link_info *link_info;
+{
+ struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ Elf_Internal_Shdr *shstrtab_hdr;
+
+ if (abfd->output_has_begun)
+ return true;
+
+ /* Do any elf backend specific processing first. */
+ if (bed->elf_backend_begin_write_processing)
+ (*bed->elf_backend_begin_write_processing) (abfd, link_info);
+
+ if (! prep_headers (abfd))
+ return false;
+
+ bfd_map_over_sections (abfd, elf_fake_sections, 0);
+
+ if (!assign_section_numbers (abfd))
+ return false;
+
+ /* The backend linker builds symbol table information itself. */
+ if (link_info == NULL)
+ {
+ if (! swap_out_syms (abfd))
+ return false;
+ }
+
+ shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr;
+ /* sh_name was set in prep_headers. */
+ shstrtab_hdr->sh_type = SHT_STRTAB;
+ shstrtab_hdr->sh_flags = 0;
+ shstrtab_hdr->sh_addr = 0;
+ shstrtab_hdr->sh_size = elf_shstrtab (abfd)->length;
+ shstrtab_hdr->sh_entsize = 0;
+ shstrtab_hdr->sh_link = 0;
+ shstrtab_hdr->sh_info = 0;
+ /* sh_offset is set in assign_file_positions_for_symtabs_and_strtabs. */
+ shstrtab_hdr->sh_addralign = 1;
+ shstrtab_hdr->contents = (PTR) elf_shstrtab (abfd)->tab;
+
+ if (!assign_file_positions_except_relocs (abfd,
+ link_info == NULL ? true : false))
+ return false;
+
+ abfd->output_has_begun = true;
+
+ return true;
+}
+
+
+/* Align to the maximum file alignment that could be required for any
+ ELF data structure. */
+
+static INLINE file_ptr
+align_file_position (off)
+ file_ptr off;
+{
+ return (off + FILE_ALIGN - 1) & ~(FILE_ALIGN - 1);
+}
+
+/* Assign a file position to a section, optionally aligning to the
+ required section alignment. */
+
+static INLINE file_ptr
+assign_file_position_for_section (i_shdrp, offset, align)
+ Elf_Internal_Shdr *i_shdrp;
+ file_ptr offset;
+ boolean align;
+{
+ if (align)
+ {
+ unsigned int al;
+
+ al = i_shdrp->sh_addralign;
+ if (al > 1)
+ offset = BFD_ALIGN (offset, al);
+ }
+ i_shdrp->sh_offset = offset;
+ if (i_shdrp->rawdata != NULL)
+ ((asection *) i_shdrp->rawdata)->filepos = offset;
+ if (i_shdrp->sh_type != SHT_NOBITS)
+ offset += i_shdrp->sh_size;
+ return offset;
+}
+
+/* Get the size of the program header. This is called by the linker
+ before any of the section VMA's are set, so it can't calculate the
+ correct value for a strange memory layout. */
+
+static bfd_size_type
+get_program_header_size (abfd)
+ bfd *abfd;
+{
+ size_t segs;
+ asection *s;
+
+ /* Assume we will need exactly two PT_LOAD segments: one for text
+ and one for data. */
+ segs = 2;
+
+ s = bfd_get_section_by_name (abfd, ".interp");
+ if (s != NULL && (s->flags & SEC_LOAD) != 0)
+ {
+ /* If we have a loadable interpreter section, we need a
+ PT_INTERP segment. In this case, assume we also need a
+ PT_PHDR segment, although that may not be true for all
+ targets. */
+ segs += 2;
+ }
+
+ if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
+ {
+ /* We need a PT_DYNAMIC segment. */
+ ++segs;
+ }
+
+ return segs * sizeof (Elf_External_Phdr);
+}
+
+/* Create the program header. OFF is the file offset where the
+ program header should be written. FIRST is the first loadable ELF
+ section. PHDR_SIZE is the size of the program header as returned
+ by get_program_header_size. */
+
+static file_ptr
+map_program_segments (abfd, off, first, phdr_size)
+ bfd *abfd;
+ file_ptr off;
+ Elf_Internal_Shdr *first;
+ bfd_size_type phdr_size;
+{
+ Elf_Internal_Phdr phdrs[10];
+ unsigned int phdr_count;
+ Elf_Internal_Phdr *phdr;
+ int phdr_size_adjust;
+ unsigned int i;
+ Elf_Internal_Shdr **hdrpp;
+ asection *sinterp, *sdyn;
+ unsigned int last_type;
+ Elf_Internal_Ehdr *i_ehdrp;
+
+ BFD_ASSERT ((abfd->flags & EXEC_P) != 0);
+ BFD_ASSERT (phdr_size / sizeof (Elf_Internal_Phdr)
+ <= sizeof phdrs / sizeof (phdrs[0]));
+
+ phdr_count = 0;
+ phdr = phdrs;
+
+ phdr_size_adjust = 0;
+
+ /* If we have a loadable .interp section, we must create a PT_INTERP
+ segment which must precede all PT_LOAD segments. We assume that
+ we must also create a PT_PHDR segment, although that may not be
+ true for all targets. */
+ sinterp = bfd_get_section_by_name (abfd, ".interp");
+ if (sinterp != NULL && (sinterp->flags & SEC_LOAD) != 0)
+ {
+ BFD_ASSERT (first != NULL);
+
+ phdr->p_type = PT_PHDR;
+
+ phdr->p_offset = off;
+
+ /* Account for any adjustment made because of the alignment of
+ the first loadable section. */
+ phdr_size_adjust = (first->sh_offset - phdr_size) - off;
+ BFD_ASSERT (phdr_size_adjust >= 0 && phdr_size_adjust < 128);
+
+ /* The program header precedes all loadable sections. This lets
+ us compute its loadable address. This depends on the linker
+ script. */
+ phdr->p_vaddr = first->sh_addr - (phdr_size + phdr_size_adjust);
+
+ phdr->p_paddr = 0;
+ phdr->p_filesz = phdr_size;
+ phdr->p_memsz = phdr_size;
+
+ /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
+ phdr->p_flags = PF_R | PF_X;
+
+ phdr->p_align = FILE_ALIGN;
+ BFD_ASSERT ((phdr->p_vaddr - phdr->p_offset) % FILE_ALIGN == 0);
+
+ /* Include the ELF header in the first loadable segment. */
+ phdr_size_adjust += off;
+
+ ++phdr_count;
+ ++phdr;
+
+ phdr->p_type = PT_INTERP;
+ phdr->p_offset = sinterp->filepos;
+ phdr->p_vaddr = sinterp->vma;
+ phdr->p_paddr = 0;
+ phdr->p_filesz = sinterp->_raw_size;
+ phdr->p_memsz = sinterp->_raw_size;
+ phdr->p_flags = PF_R;
+ phdr->p_align = 1 << bfd_get_section_alignment (abfd, sinterp);
+
+ ++phdr_count;
+ ++phdr;
+ }
+
+ /* Look through the sections to see how they will be divided into
+ program segments. The sections must be arranged in order by
+ sh_addr for this to work correctly. */
+ phdr->p_type = PT_NULL;
+ last_type = SHT_PROGBITS;
+ for (i = 1, hdrpp = elf_elfsections (abfd) + 1;
+ i < elf_elfheader (abfd)->e_shnum;
+ i++, hdrpp++)
+ {
+ Elf_Internal_Shdr *hdr;
+
+ hdr = *hdrpp;
+
+ /* Ignore any section which will not be part of the process
+ image. */
+ if ((hdr->sh_flags & SHF_ALLOC) == 0)
+ continue;
+
+ /* If this section fits in the segment we are constructing, add
+ it in. */
+ if (phdr->p_type != PT_NULL
+ && (hdr->sh_offset - (phdr->p_offset + phdr->p_memsz)
+ == hdr->sh_addr - (phdr->p_vaddr + phdr->p_memsz))
+ && (last_type != SHT_NOBITS || hdr->sh_type == SHT_NOBITS))
+ {
+ bfd_size_type adjust;
+
+ adjust = hdr->sh_addr - (phdr->p_vaddr + phdr->p_memsz);
+ phdr->p_memsz += hdr->sh_size + adjust;
+ if (hdr->sh_type != SHT_NOBITS)
+ phdr->p_filesz += hdr->sh_size + adjust;
+ if ((hdr->sh_flags & SHF_WRITE) != 0)
+ phdr->p_flags |= PF_W;
+ if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
+ phdr->p_flags |= PF_X;
+ last_type = hdr->sh_type;
+ continue;
+ }
+
+ /* If we have a segment, move to the next one. */
+ if (phdr->p_type != PT_NULL)
+ {
+ ++phdr;
+ ++phdr_count;
+ }
+
+ /* Start a new segment. */
+ phdr->p_type = PT_LOAD;
+ phdr->p_offset = hdr->sh_offset;
+ phdr->p_vaddr = hdr->sh_addr;
+ phdr->p_paddr = 0;
+ if (hdr->sh_type == SHT_NOBITS)
+ phdr->p_filesz = 0;
+ else
+ phdr->p_filesz = hdr->sh_size;
+ phdr->p_memsz = hdr->sh_size;
+ phdr->p_flags = PF_R;
+ if ((hdr->sh_flags & SHF_WRITE) != 0)
+ phdr->p_flags |= PF_W;
+ if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
+ phdr->p_flags |= PF_X;
+ phdr->p_align = get_elf_backend_data (abfd)->maxpagesize;
+
+ if (hdr == first
+ && sinterp != NULL
+ && (sinterp->flags & SEC_LOAD) != 0)
+ {
+ phdr->p_offset -= phdr_size + phdr_size_adjust;
+ phdr->p_vaddr -= phdr_size + phdr_size_adjust;
+ phdr->p_filesz += phdr_size + phdr_size_adjust;
+ phdr->p_memsz += phdr_size + phdr_size_adjust;
+ }
+
+ last_type = hdr->sh_type;
+ }
+
+ if (phdr->p_type != PT_NULL)
+ {
+ ++phdr;
+ ++phdr_count;
+ }
+
+ /* If we have a .dynamic section, create a PT_DYNAMIC segment. */
+ sdyn = bfd_get_section_by_name (abfd, ".dynamic");
+ if (sdyn != NULL && (sdyn->flags & SEC_LOAD) != 0)
+ {
+ phdr->p_type = PT_DYNAMIC;
+ phdr->p_offset = sdyn->filepos;
+ phdr->p_vaddr = sdyn->vma;
+ phdr->p_paddr = 0;
+ phdr->p_filesz = sdyn->_raw_size;
+ phdr->p_memsz = sdyn->_raw_size;
+ phdr->p_flags = PF_R;
+ if ((sdyn->flags & SEC_READONLY) == 0)
+ phdr->p_flags |= PF_W;
+ if ((sdyn->flags & SEC_CODE) != 0)
+ phdr->p_flags |= PF_X;
+ phdr->p_align = 1 << bfd_get_section_alignment (abfd, sdyn);
+
+ ++phdr;
+ ++phdr_count;
+ }
+
+ /* Make sure the return value from get_program_header_size matches
+ what we computed here. */
+ if (phdr_count != phdr_size / sizeof (Elf_External_Phdr))
+ abort ();
+
+ /* Set up program header information. */
+ i_ehdrp = elf_elfheader (abfd);
+ i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
+ i_ehdrp->e_phoff = off;
+ i_ehdrp->e_phnum = phdr_count;
+
+ /* Save the program headers away. I don't think anybody uses this
+ information right now. */
+ elf_tdata (abfd)->phdr = ((Elf_Internal_Phdr *)
+ bfd_alloc (abfd,
+ (phdr_count
+ * sizeof (Elf_Internal_Phdr))));
+ if (elf_tdata (abfd)->phdr == NULL && phdr_count != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return (file_ptr) -1;
+ }
+ memcpy (elf_tdata (abfd)->phdr, phdrs,
+ phdr_count * sizeof (Elf_Internal_Phdr));
+
+ /* Write out the program headers. */
+ if (bfd_seek (abfd, off, SEEK_SET) != 0)
+ return (file_ptr) -1;
+
+ for (i = 0, phdr = phdrs; i < phdr_count; i++, phdr++)
+ {
+ Elf_External_Phdr extphdr;
+
+ elf_swap_phdr_out (abfd, phdr, &extphdr);
+ if (bfd_write (&extphdr, sizeof (Elf_External_Phdr), 1, abfd)
+ != sizeof (Elf_External_Phdr))
+ return (file_ptr) -1;
+ }
+
+ return off + phdr_count * sizeof (Elf_External_Phdr);
+}
+
+/* Work out the file positions of all the sections. This is called by
+ elf_compute_section_file_positions. All the section sizes and VMAs
+ must be known before this is called.
+
+ We do not consider reloc sections at this point, unless they form
+ part of the loadable image. Reloc sections are assigned file
+ positions in assign_file_positions_for_relocs, which is called by
+ write_object_contents and final_link.
+
+ If DOSYMS is false, we do not assign file positions for the symbol
+ table or the string table. */
+
+static boolean
+assign_file_positions_except_relocs (abfd, dosyms)
+ bfd *abfd;
+ boolean dosyms;
+{
+ struct elf_obj_tdata * const tdata = elf_tdata (abfd);
+ Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd);
+ Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
+ file_ptr off;
+
+ /* Start after the ELF header. */
+ off = i_ehdrp->e_ehsize;
+
+ if ((abfd->flags & EXEC_P) == 0)
+ {
+ Elf_Internal_Shdr **hdrpp;
+ unsigned int i;
+
+ /* We are not creating an executable, which means that we are
+ not creating a program header, and that the actual order of
+ the sections in the file is unimportant. */
+ for (i = 1, hdrpp = i_shdrpp + 1; i < i_ehdrp->e_shnum; i++, hdrpp++)
+ {
+ Elf_Internal_Shdr *hdr;
+
+ hdr = *hdrpp;
+ if (hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
+ {
+ hdr->sh_offset = -1;
+ continue;
+ }
+ if (! dosyms
+ && (i == tdata->symtab_section
+ || i == tdata->strtab_section))
+ {
+ hdr->sh_offset = -1;
+ continue;
+ }
+
+ off = assign_file_position_for_section (hdr, off, true);
+ }
+ }
+ else
+ {
+ file_ptr phdr_off;
+ bfd_size_type phdr_size;
+ bfd_vma maxpagesize;
+ Elf_Internal_Shdr **hdrpp;
+ unsigned int i;
+ Elf_Internal_Shdr *first;
+ file_ptr phdr_map;
+
+ /* We are creating an executable. We must create a program
+ header. We can't actually create the program header until we
+ have set the file positions for the sections, but we can
+ figure out how big it is going to be. */
+ off = align_file_position (off);
+ phdr_size = get_program_header_size (abfd);
+ if (phdr_size == (file_ptr) -1)
+ return false;
+ phdr_off = off;
+ off += phdr_size;
+
+ maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
+ if (maxpagesize == 0)
+ maxpagesize = 1;
+
+ /* FIXME: We might want to sort the sections on the sh_addr
+ field here. For now, we just assume that the linker will
+ create the sections in an appropriate order. */
+
+ /* Assign file positions in two passes. In the first pass, we
+ assign a file position to every section which forms part of
+ the executable image. */
+ first = NULL;
+ for (i = 1, hdrpp = i_shdrpp + 1; i < i_ehdrp->e_shnum; i++, hdrpp++)
+ {
+ Elf_Internal_Shdr *hdr;
+
+ hdr = *hdrpp;
+ if ((hdr->sh_flags & SHF_ALLOC) == 0)
+ continue;
+
+ if (first == NULL)
+ first = hdr;
+
+ if ((abfd->flags & D_PAGED) != 0)
+ {
+ /* The section VMA must equal the file position modulo
+ the page size. This is required by the program
+ header. */
+ off += (hdr->sh_addr - off) % maxpagesize;
+ }
+
+ off = assign_file_position_for_section (hdr, off, false);
+ }
+
+ /* Assign file positions to all the sections which do not form
+ part of the loadable image, except for the relocs. */
+ for (i = 1, hdrpp = i_shdrpp + 1; i < i_ehdrp->e_shnum; i++, hdrpp++)
+ {
+ Elf_Internal_Shdr *hdr;
+
+ hdr = *hdrpp;
+ if ((hdr->sh_flags & SHF_ALLOC) != 0)
+ continue;
+ if (hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
+ {
+ hdr->sh_offset = -1;
+ continue;
+ }
+ if (! dosyms
+ && (i == tdata->symtab_section
+ || i == tdata->strtab_section))
+ {
+ hdr->sh_offset = -1;
+ continue;
+ }
+
+ off = assign_file_position_for_section (hdr, off, true);
+ }
+
+ phdr_map = map_program_segments (abfd, phdr_off, first, phdr_size);
+ if (phdr_map == (file_ptr) -1)
+ return false;
+ BFD_ASSERT (phdr_map == phdr_off + phdr_size);
+ }
+
+ /* Place the section headers. */
+ off = align_file_position (off);
+ i_ehdrp->e_shoff = off;
+ off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
+
+ elf_tdata (abfd)->next_file_pos = off;
+
+ return true;
+}
+
+static boolean
+prep_headers (abfd)
+ bfd *abfd;
+{
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
+ Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
+ int count;
+ struct strtab *shstrtab;
+
+ i_ehdrp = elf_elfheader (abfd);
+ i_shdrp = elf_elfsections (abfd);
+
+ shstrtab = bfd_new_strtab (abfd);
+ if (!shstrtab)
+ return false;
+
+ elf_shstrtab (abfd) = shstrtab;
+
+ i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
+ i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
+ i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
+ i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
+
+ i_ehdrp->e_ident[EI_CLASS] = ELFCLASS;
+ i_ehdrp->e_ident[EI_DATA] =
+ abfd->xvec->byteorder_big_p ? ELFDATA2MSB : ELFDATA2LSB;
+ i_ehdrp->e_ident[EI_VERSION] = EV_CURRENT;
+
+ for (count = EI_PAD; count < EI_NIDENT; count++)
+ i_ehdrp->e_ident[count] = 0;
+
+ if ((abfd->flags & DYNAMIC) != 0)
+ i_ehdrp->e_type = ET_DYN;
+ else if ((abfd->flags & EXEC_P) != 0)
+ i_ehdrp->e_type = ET_EXEC;
+ else
+ i_ehdrp->e_type = ET_REL;
+
+ switch (bfd_get_arch (abfd))
+ {
+ case bfd_arch_unknown:
+ i_ehdrp->e_machine = EM_NONE;
+ break;
+ case bfd_arch_sparc:
+#if ARCH_SIZE == 64
+ i_ehdrp->e_machine = EM_SPARC64;
+#else
+ i_ehdrp->e_machine = EM_SPARC;
+#endif
+ break;
+ case bfd_arch_i386:
+ i_ehdrp->e_machine = EM_386;
+ break;
+ case bfd_arch_m68k:
+ i_ehdrp->e_machine = EM_68K;
+ break;
+ case bfd_arch_m88k:
+ i_ehdrp->e_machine = EM_88K;
+ break;
+ case bfd_arch_i860:
+ i_ehdrp->e_machine = EM_860;
+ break;
+ case bfd_arch_mips: /* MIPS Rxxxx */
+ i_ehdrp->e_machine = EM_MIPS; /* only MIPS R3000 */
+ break;
+ case bfd_arch_hppa:
+ i_ehdrp->e_machine = EM_PARISC;
+ break;
+ case bfd_arch_powerpc:
+ i_ehdrp->e_machine = EM_CYGNUS_POWERPC;
+ break;
+ /* also note that EM_M32, AT&T WE32100 is unknown to bfd */
+ default:
+ i_ehdrp->e_machine = EM_NONE;
+ }
+ i_ehdrp->e_version = EV_CURRENT;
+ i_ehdrp->e_ehsize = sizeof (Elf_External_Ehdr);
+
+ /* no program header, for now. */
+ i_ehdrp->e_phoff = 0;
+ i_ehdrp->e_phentsize = 0;
+ i_ehdrp->e_phnum = 0;
+
+ /* each bfd section is section header entry */
+ i_ehdrp->e_entry = bfd_get_start_address (abfd);
+ i_ehdrp->e_shentsize = sizeof (Elf_External_Shdr);
+
+ /* if we're building an executable, we'll need a program header table */
+ if (abfd->flags & EXEC_P)
+ {
+ /* it all happens later */
+#if 0
+ i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
+
+ /* elf_build_phdrs() returns a (NULL-terminated) array of
+ Elf_Internal_Phdrs */
+ i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum);
+ i_ehdrp->e_phoff = outbase;
+ outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
+#endif
+ }
+ else
+ {
+ i_ehdrp->e_phentsize = 0;
+ i_phdrp = 0;
+ i_ehdrp->e_phoff = 0;
+ }
+
+ elf_tdata (abfd)->symtab_hdr.sh_name = bfd_add_to_strtab (abfd, shstrtab,
+ ".symtab");
+ elf_tdata (abfd)->strtab_hdr.sh_name = bfd_add_to_strtab (abfd, shstrtab,
+ ".strtab");
+ elf_tdata (abfd)->shstrtab_hdr.sh_name = bfd_add_to_strtab (abfd, shstrtab,
+ ".shstrtab");
+ if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
+ || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
+ || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
+ return false;
+
+ return true;
+}
+
+static boolean
+swap_out_syms (abfd)
+ bfd *abfd;
+{
+ if (!elf_map_symbols (abfd))
+ return false;
+
+ /* Dump out the symtabs. */
+ {
+ int symcount = bfd_get_symcount (abfd);
+ asymbol **syms = bfd_get_outsymbols (abfd);
+ struct strtab *stt = bfd_new_strtab (abfd);
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Shdr *symstrtab_hdr;
+ Elf_External_Sym *outbound_syms;
+ int idx;
+
+ if (!stt)
+ return false;
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ symtab_hdr->sh_type = SHT_SYMTAB;
+ symtab_hdr->sh_entsize = sizeof (Elf_External_Sym);
+ symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
+ symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
+ symtab_hdr->sh_addralign = FILE_ALIGN;
+
+ symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
+ symstrtab_hdr->sh_type = SHT_STRTAB;
+
+ outbound_syms = (Elf_External_Sym *)
+ bfd_alloc (abfd, (1 + symcount) * sizeof (Elf_External_Sym));
+ if (!outbound_syms)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ /* now generate the data (for "contents") */
+ {
+ /* Fill in zeroth symbol and swap it out. */
+ Elf_Internal_Sym sym;
+ sym.st_name = 0;
+ sym.st_value = 0;
+ sym.st_size = 0;
+ sym.st_info = 0;
+ sym.st_other = 0;
+ sym.st_shndx = SHN_UNDEF;
+ elf_swap_symbol_out (abfd, &sym, outbound_syms);
+ }
+ for (idx = 0; idx < symcount; idx++)
+ {
+ Elf_Internal_Sym sym;
+ bfd_vma value = syms[idx]->value;
+ elf_symbol_type *type_ptr;
+
+ if (syms[idx]->flags & BSF_SECTION_SYM)
+ /* Section symbols have no names. */
+ sym.st_name = 0;
+ else
+ {
+ sym.st_name = bfd_add_to_strtab (abfd, stt, syms[idx]->name);
+ if (sym.st_name == (unsigned long) -1)
+ return false;
+ }
+
+ type_ptr = elf_symbol_from (abfd, syms[idx]);
+
+ if (bfd_is_com_section (syms[idx]->section))
+ {
+ /* ELF common symbols put the alignment into the `value' field,
+ and the size into the `size' field. This is backwards from
+ how BFD handles it, so reverse it here. */
+ sym.st_size = value;
+ sym.st_value = type_ptr ? type_ptr->internal_elf_sym.st_value : 16;
+ sym.st_shndx = elf_section_from_bfd_section (abfd,
+ syms[idx]->section);
+ }
+ else
+ {
+ asection *sec = syms[idx]->section;
+ int shndx;
+
+ if (sec->output_section)
+ {
+ value += sec->output_offset;
+ sec = sec->output_section;
+ }
+ value += sec->vma;
+ sym.st_value = value;
+ sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;
+ sym.st_shndx = shndx = elf_section_from_bfd_section (abfd, sec);
+ if (shndx == -1)
+ {
+ asection *sec2;
+ /* Writing this would be a hell of a lot easier if we had
+ some decent documentation on bfd, and knew what to expect
+ of the library, and what to demand of applications. For
+ example, it appears that `objcopy' might not set the
+ section of a symbol to be a section that is actually in
+ the output file. */
+ sec2 = bfd_get_section_by_name (abfd, sec->name);
+ BFD_ASSERT (sec2 != 0);
+ sym.st_shndx = shndx = elf_section_from_bfd_section (abfd, sec2);
+ BFD_ASSERT (shndx != -1);
+ }
+ }
+
+ if (bfd_is_com_section (syms[idx]->section))
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_OBJECT);
+ else if (bfd_is_und_section (syms[idx]->section))
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_NOTYPE);
+ else if (syms[idx]->flags & BSF_SECTION_SYM)
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
+ else if (syms[idx]->flags & BSF_FILE)
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
+ else
+ {
+ int bind = STB_LOCAL;
+ int type = STT_OBJECT;
+ unsigned int flags = syms[idx]->flags;
+
+ if (flags & BSF_LOCAL)
+ bind = STB_LOCAL;
+ else if (flags & BSF_WEAK)
+ bind = STB_WEAK;
+ else if (flags & BSF_GLOBAL)
+ bind = STB_GLOBAL;
+
+ if (flags & BSF_FUNCTION)
+ type = STT_FUNC;
+
+ sym.st_info = ELF_ST_INFO (bind, type);
+ }
+
+ sym.st_other = 0;
+ elf_swap_symbol_out (abfd, &sym,
+ (outbound_syms
+ + elf_sym_extra (abfd)[idx].elf_sym_num));
+ }
+
+ symtab_hdr->contents = (PTR) outbound_syms;
+ symstrtab_hdr->contents = (PTR) stt->tab;
+ symstrtab_hdr->sh_size = stt->length;
+ symstrtab_hdr->sh_type = SHT_STRTAB;
+
+ symstrtab_hdr->sh_flags = 0;
+ symstrtab_hdr->sh_addr = 0;
+ symstrtab_hdr->sh_entsize = 0;
+ symstrtab_hdr->sh_link = 0;
+ symstrtab_hdr->sh_info = 0;
+ symstrtab_hdr->sh_addralign = 1;
+ symstrtab_hdr->size = 0;
+ }
+
+ return true;
+}
+
+static boolean
+write_shdrs_and_ehdr (abfd)
+ bfd *abfd;
+{
+ Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_External_Shdr *x_shdrp; /* Section header table, external form */
+ Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
+ unsigned int count;
+ struct strtab *shstrtab;
+
+ i_ehdrp = elf_elfheader (abfd);
+ i_shdrp = elf_elfsections (abfd);
+ shstrtab = elf_shstrtab (abfd);
+
+ /* swap the header before spitting it out... */
+
+#if DEBUG & 1
+ elf_debug_file (i_ehdrp);
+#endif
+ elf_swap_ehdr_out (abfd, i_ehdrp, &x_ehdr);
+ if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
+ || (bfd_write ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd)
+ != sizeof (x_ehdr)))
+ return false;
+
+ /* at this point we've concocted all the ELF sections... */
+ x_shdrp = (Elf_External_Shdr *)
+ bfd_alloc (abfd, sizeof (*x_shdrp) * (i_ehdrp->e_shnum));
+ if (!x_shdrp)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ for (count = 0; count < i_ehdrp->e_shnum; count++)
+ {
+#if DEBUG & 2
+ elf_debug_section (shstrtab->tab + i_shdrp[count]->sh_name, count,
+ i_shdrp[count]);
+#endif
+ elf_swap_shdr_out (abfd, i_shdrp[count], x_shdrp + count);
+ }
+ if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET) != 0
+ || (bfd_write ((PTR) x_shdrp, sizeof (*x_shdrp), i_ehdrp->e_shnum, abfd)
+ != sizeof (*x_shdrp) * i_ehdrp->e_shnum))
+ return false;
+
+ /* need to dump the string table too... */
+
+ return true;
+}
+
+/* Assign file positions for all the reloc sections which are not part
+ of the loadable file image. */
+
+static void
+assign_file_positions_for_relocs (abfd)
+ bfd *abfd;
+{
+ file_ptr off;
+ unsigned int i;
+ Elf_Internal_Shdr **shdrpp;
+
+ off = elf_tdata (abfd)->next_file_pos;
+
+ for (i = 1, shdrpp = elf_elfsections (abfd) + 1;
+ i < elf_elfheader (abfd)->e_shnum;
+ i++, shdrpp++)
+ {
+ Elf_Internal_Shdr *shdrp;
+
+ shdrp = *shdrpp;
+ if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
+ && shdrp->sh_offset == -1)
+ off = assign_file_position_for_section (shdrp, off, true);
+ }
+
+ elf_tdata (abfd)->next_file_pos = off;
+}
+
+boolean
+NAME(bfd_elf,write_object_contents) (abfd)
+ bfd *abfd;
+{
+ struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ Elf_Internal_Ehdr *i_ehdrp;
+ Elf_Internal_Shdr **i_shdrp;
+ unsigned int count;
+
+ if (! abfd->output_has_begun
+ && ! elf_compute_section_file_positions (abfd,
+ (struct bfd_link_info *) NULL))
+ return false;
+
+ i_shdrp = elf_elfsections (abfd);
+ i_ehdrp = elf_elfheader (abfd);
+
+ bfd_map_over_sections (abfd, write_relocs, (PTR) 0);
+ assign_file_positions_for_relocs (abfd);
+
+ /* After writing the headers, we need to write the sections too... */
+ for (count = 1; count < i_ehdrp->e_shnum; count++)
+ {
+ if (bed->elf_backend_section_processing)
+ (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
+ if (i_shdrp[count]->contents)
+ {
+ if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
+ || (bfd_write (i_shdrp[count]->contents, i_shdrp[count]->sh_size,
+ 1, abfd)
+ != i_shdrp[count]->sh_size))
+ return false;
+ }
+ }
+
+ if (bed->elf_backend_final_write_processing)
+ (*bed->elf_backend_final_write_processing) (abfd, NULL);
+
+ return write_shdrs_and_ehdr (abfd);
+}
+
+/* Given an index of a section, retrieve a pointer to it. Note
+ that for our purposes, sections are indexed by {1, 2, ...} with
+ 0 being an illegal index. */
+
+/* In the original, each ELF section went into exactly one BFD
+ section. This doesn't really make sense, so we need a real mapping.
+ The mapping has to hide in the Elf_Internal_Shdr since asection
+ doesn't have anything like a tdata field... */
+
+static asection *
+section_from_elf_index (abfd, index)
+ bfd *abfd;
+ unsigned int index;
+{
+ /* @@ Is bfd_com_section_ptr really correct in all the places it could
+ be returned from this routine? */
+
+ if (index == SHN_ABS)
+ return bfd_com_section_ptr; /* not abs? */
+ if (index == SHN_COMMON)
+ return bfd_com_section_ptr;
+
+ if (index >= elf_elfheader (abfd)->e_shnum)
+ return NULL;
+
+ {
+ Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[index];
+
+ switch (hdr->sh_type)
+ {
+ /* ELF sections that map to BFD sections */
+ case SHT_PROGBITS:
+ case SHT_NOBITS:
+ case SHT_HASH:
+ case SHT_DYNAMIC:
+ if (hdr->rawdata == NULL)
+ {
+ if (! bfd_section_from_shdr (abfd, index))
+ return NULL;
+ }
+ return (struct sec *) hdr->rawdata;
+
+ default:
+ return bfd_abs_section_ptr;
+ }
+ }
+}
+
+/* given a section, search the header to find them... */
+static int
+elf_section_from_bfd_section (abfd, asect)
+ bfd *abfd;
+ struct sec *asect;
+{
+ Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
+ int index;
+ Elf_Internal_Shdr *hdr;
+ int maxindex = elf_elfheader (abfd)->e_shnum;
+
+ if (asect->owner == NULL)
+ {
+ if (bfd_is_abs_section (asect))
+ return SHN_ABS;
+ if (bfd_is_com_section (asect))
+ return SHN_COMMON;
+ if (bfd_is_und_section (asect))
+ return SHN_UNDEF;
+ return -1;
+ }
+
+ BFD_ASSERT (asect->owner == abfd);
+
+ for (index = 0; index < maxindex; index++)
+ {
+ hdr = i_shdrp[index];
+ switch (hdr->sh_type)
+ {
+ /* ELF sections that map to BFD sections */
+ case SHT_PROGBITS:
+ case SHT_NOBITS:
+ case SHT_NOTE:
+ case SHT_HASH:
+ case SHT_DYNAMIC:
+ case SHT_DYNSYM:
+ if (hdr->rawdata)
+ {
+ if (((struct sec *) (hdr->rawdata)) == asect)
+ return index;
+ }
+ break;
+
+ case SHT_REL:
+ case SHT_RELA:
+ /* We sometimes map a reloc section to a BFD section. */
+ if (hdr->sh_link != elf_onesymtab (abfd)
+ && (asection *) hdr->rawdata == asect)
+ return index;
+ break;
+
+ case SHT_STRTAB:
+ /* We map most string tables to BFD sections. */
+ if (index != elf_elfheader (abfd)->e_shstrndx
+ && index != elf_onesymtab (abfd)
+ && (asection *) hdr->rawdata == asect)
+ return index;
+
+ /* FALL THROUGH */
+ default:
+ {
+ struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ if (bed->elf_backend_section_from_bfd_section)
+ {
+ int retval;
+
+ retval = index;
+ if ((*bed->elf_backend_section_from_bfd_section)
+ (abfd, hdr, asect, &retval))
+ return retval;
+ }
+ }
+ break;
+ }
+ }
+ return -1;
+}
+
+/* given a symbol, return the bfd index for that symbol. */
+static int
+elf_symbol_from_bfd_symbol (abfd, asym_ptr_ptr)
+ bfd *abfd;
+ struct symbol_cache_entry **asym_ptr_ptr;
+{
+ struct symbol_cache_entry *asym_ptr = *asym_ptr_ptr;
+ int idx;
+ flagword flags = asym_ptr->flags;
+
+ /* When gas creates relocations against local labels, it creates its
+ own symbol for the section, but does put the symbol into the
+ symbol chain, so udata is 0. When the linker is generating
+ relocatable output, this section symbol may be for one of the
+ input sections rather than the output section. */
+ if (asym_ptr->udata == (PTR) 0
+ && (flags & BSF_SECTION_SYM)
+ && asym_ptr->section)
+ {
+ int indx;
+
+ if (asym_ptr->section->output_section != NULL)
+ indx = asym_ptr->section->output_section->index;
+ else
+ indx = asym_ptr->section->index;
+ if (elf_section_syms (abfd)[indx])
+ asym_ptr->udata = elf_section_syms (abfd)[indx]->udata;
+ }
+
+ if (asym_ptr->udata)
+ idx = ((Elf_Sym_Extra *) asym_ptr->udata)->elf_sym_num;
+ else
+ {
+ abort ();
+ }
+
+#if DEBUG & 4
+ {
+
+ fprintf (stderr,
+ "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx %s\n",
+ (long) asym_ptr, asym_ptr->name, idx, flags, elf_symbol_flags (flags));
+ fflush (stderr);
+ }
+#endif
+
+ return idx;
+}
+
+static long
+elf_slurp_symbol_table (abfd, symptrs, dynamic)
+ bfd *abfd;
+ asymbol **symptrs; /* Buffer for generated bfd symbols */
+ boolean dynamic;
+{
+ Elf_Internal_Shdr *hdr;
+ long symcount; /* Number of external ELF symbols */
+ elf_symbol_type *sym; /* Pointer to current bfd symbol */
+ elf_symbol_type *symbase; /* Buffer for generated bfd symbols */
+ Elf_Internal_Sym i_sym;
+ Elf_External_Sym *x_symp = NULL;
+
+ /* Read each raw ELF symbol, converting from external ELF form to
+ internal ELF form, and then using the information to create a
+ canonical bfd symbol table entry.
+
+ Note that we allocate the initial bfd canonical symbol buffer
+ based on a one-to-one mapping of the ELF symbols to canonical
+ symbols. We actually use all the ELF symbols, so there will be no
+ space left over at the end. When we have all the symbols, we
+ build the caller's pointer vector. */
+
+ if (dynamic)
+ hdr = &elf_tdata (abfd)->dynsymtab_hdr;
+ else
+ hdr = &elf_tdata (abfd)->symtab_hdr;
+ if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1)
+ return -1;
+
+ symcount = hdr->sh_size / sizeof (Elf_External_Sym);
+
+ if (symcount == 0)
+ sym = symbase = NULL;
+ else
+ {
+ long i;
+
+ if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1)
+ return -1;
+
+ symbase = ((elf_symbol_type *)
+ bfd_zalloc (abfd, symcount * sizeof (elf_symbol_type)));
+ if (symbase == (elf_symbol_type *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return -1;
+ }
+ sym = symbase;
+
+ /* Temporarily allocate room for the raw ELF symbols. */
+ x_symp = ((Elf_External_Sym *)
+ malloc (symcount * sizeof (Elf_External_Sym)));
+ if (x_symp == NULL && symcount != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ if (bfd_read ((PTR) x_symp, sizeof (Elf_External_Sym), symcount, abfd)
+ != symcount * sizeof (Elf_External_Sym))
+ goto error_return;
+ /* Skip first symbol, which is a null dummy. */
+ for (i = 1; i < symcount; i++)
+ {
+ elf_swap_symbol_in (abfd, x_symp + i, &i_sym);
+ memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym));
+#ifdef ELF_KEEP_EXTSYM
+ memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym));
+#endif
+ sym->symbol.the_bfd = abfd;
+
+ sym->symbol.name = elf_string_from_elf_section (abfd, hdr->sh_link,
+ i_sym.st_name);
+
+ sym->symbol.value = i_sym.st_value;
+
+ if (i_sym.st_shndx > 0 && i_sym.st_shndx < SHN_LORESERVE)
+ {
+ sym->symbol.section = section_from_elf_index (abfd,
+ i_sym.st_shndx);
+ if (sym->symbol.section == NULL)
+ {
+ /* This symbol is in a section for which we did not
+ create a BFD section. Just use bfd_abs_section,
+ although it is wrong. FIXME. */
+ sym->symbol.section = bfd_abs_section_ptr;
+ }
+ }
+ else if (i_sym.st_shndx == SHN_ABS)
+ {
+ sym->symbol.section = bfd_abs_section_ptr;
+ }
+ else if (i_sym.st_shndx == SHN_COMMON)
+ {
+ sym->symbol.section = bfd_com_section_ptr;
+ /* Elf puts the alignment into the `value' field, and
+ the size into the `size' field. BFD wants to see the
+ size in the value field, and doesn't care (at the
+ moment) about the alignment. */
+ sym->symbol.value = i_sym.st_size;
+ }
+ else if (i_sym.st_shndx == SHN_UNDEF)
+ {
+ sym->symbol.section = bfd_und_section_ptr;
+ }
+ else
+ sym->symbol.section = bfd_abs_section_ptr;
+
+ sym->symbol.value -= sym->symbol.section->vma;
+
+ switch (ELF_ST_BIND (i_sym.st_info))
+ {
+ case STB_LOCAL:
+ sym->symbol.flags |= BSF_LOCAL;
+ break;
+ case STB_GLOBAL:
+ sym->symbol.flags |= BSF_GLOBAL;
+ break;
+ case STB_WEAK:
+ sym->symbol.flags |= BSF_WEAK;
+ break;
+ }
+
+ switch (ELF_ST_TYPE (i_sym.st_info))
+ {
+ case STT_SECTION:
+ sym->symbol.flags |= BSF_SECTION_SYM | BSF_DEBUGGING;
+ break;
+ case STT_FILE:
+ sym->symbol.flags |= BSF_FILE | BSF_DEBUGGING;
+ break;
+ case STT_FUNC:
+ sym->symbol.flags |= BSF_FUNCTION;
+ break;
+ }
+
+ if (dynamic)
+ sym->symbol.flags |= BSF_DYNAMIC;
+
+ /* Do some backend-specific processing on this symbol. */
+ {
+ struct elf_backend_data *ebd = get_elf_backend_data (abfd);
+ if (ebd->elf_backend_symbol_processing)
+ (*ebd->elf_backend_symbol_processing) (abfd, &sym->symbol);
+ }
+
+ sym++;
+ }
+ }
+
+ /* Do some backend-specific processing on this symbol table. */
+ {
+ struct elf_backend_data *ebd = get_elf_backend_data (abfd);
+ if (ebd->elf_backend_symbol_table_processing)
+ (*ebd->elf_backend_symbol_table_processing) (abfd, symbase, symcount);
+ }
+
+ /* We rely on the zalloc to clear out the final symbol entry. */
+
+ symcount = sym - symbase;
+
+ /* Fill in the user's symbol pointer vector if needed. */
+ if (symptrs)
+ {
+ long l = symcount;
+
+ sym = symbase;
+ while (l-- > 0)
+ {
+ *symptrs++ = &sym->symbol;
+ sym++;
+ }
+ *symptrs = 0; /* Final null pointer */
+ }
+
+ if (x_symp != NULL)
+ free (x_symp);
+ return symcount;
+error_return:
+ if (x_symp != NULL)
+ free (x_symp);
+ return -1;
+}
+
+/* Return the number of bytes required to hold the symtab vector.
+
+ Note that we base it on the count plus 1, since we will null terminate
+ the vector allocated based on this size. However, the ELF symbol table
+ always has a dummy entry as symbol #0, so it ends up even. */
+
+long
+elf_get_symtab_upper_bound (abfd)
+ bfd *abfd;
+{
+ long symcount;
+ long symtab_size;
+ Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
+
+ symcount = hdr->sh_size / sizeof (Elf_External_Sym);
+ symtab_size = (symcount - 1 + 1) * (sizeof (asymbol *));
+
+ return symtab_size;
+}
+
+long
+elf_get_dynamic_symtab_upper_bound (abfd)
+ bfd *abfd;
+{
+ long symcount;
+ long symtab_size;
+ Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;
+
+ if (elf_dynsymtab (abfd) == 0)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ symcount = hdr->sh_size / sizeof (Elf_External_Sym);
+ symtab_size = (symcount - 1 + 1) * (sizeof (asymbol *));
+
+ return symtab_size;
+}
+
+long
+elf_get_reloc_upper_bound (abfd, asect)
+ bfd *abfd;
+ sec_ptr asect;
+{
+ return (asect->reloc_count + 1) * sizeof (arelent *);
+}
+
+/* Read in and swap the external relocs. */
+
+static boolean
+elf_slurp_reloc_table (abfd, asect, symbols)
+ bfd *abfd;
+ asection *asect;
+ asymbol **symbols;
+{
+ struct elf_backend_data * const ebd = get_elf_backend_data (abfd);
+ struct bfd_elf_section_data * const d = elf_section_data (asect);
+ PTR allocated = NULL;
+ bfd_byte *native_relocs;
+ arelent *relents;
+ arelent *relent;
+ unsigned int i;
+ int entsize;
+
+ if (asect->relocation != NULL)
+ return true;
+
+ BFD_ASSERT (asect->rel_filepos == d->rel_hdr.sh_offset
+ && (asect->reloc_count
+ == d->rel_hdr.sh_size / d->rel_hdr.sh_entsize));
+
+ native_relocs = (bfd_byte *) elf_section_data (asect)->relocs;
+ if (native_relocs == NULL)
+ {
+ allocated = (PTR) malloc (d->rel_hdr.sh_size);
+ if (allocated == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0
+ || (bfd_read (allocated, 1, d->rel_hdr.sh_size, abfd)
+ != d->rel_hdr.sh_size))
+ goto error_return;
+
+ native_relocs = (bfd_byte *) allocated;
+ }
+
+ relents = ((arelent *)
+ bfd_alloc (abfd, asect->reloc_count * sizeof (arelent)));
+ if (relents == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ entsize = d->rel_hdr.sh_entsize;
+ BFD_ASSERT (entsize == sizeof (Elf_External_Rel)
+ || entsize == sizeof (Elf_External_Rela));
+
+ for (i = 0, relent = relents;
+ i < asect->reloc_count;
+ i++, relent++, native_relocs += entsize)
+ {
+ Elf_Internal_Rela rela;
+ Elf_Internal_Rel rel;
+
+ if (entsize == sizeof (Elf_External_Rela))
+ elf_swap_reloca_in (abfd, (Elf_External_Rela *) native_relocs, &rela);
+ else
+ {
+ elf_swap_reloc_in (abfd, (Elf_External_Rel *) native_relocs, &rel);
+ rela.r_offset = rel.r_offset;
+ rela.r_info = rel.r_info;
+ rela.r_addend = 0;
+ }
+
+ /* The address of an ELF reloc is section relative for an object
+ file, and absolute for an executable file or shared library.
+ The address of a BFD reloc is always section relative. */
+ if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
+ relent->address = rela.r_offset;
+ else
+ relent->address = rela.r_offset - asect->vma;
+
+ if (ELF_R_SYM (rela.r_info) == 0)
+ relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ else
+ {
+ asymbol **ps, *s;
+
+ ps = symbols + ELF_R_SYM (rela.r_info) - 1;
+ s = *ps;
+
+ /* Canonicalize ELF section symbols. FIXME: Why? */
+ if ((s->flags & BSF_SECTION_SYM) == 0)
+ relent->sym_ptr_ptr = ps;
+ else
+ relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
+ }
+
+ relent->addend = rela.r_addend;
+
+ if (entsize == sizeof (Elf_External_Rela))
+ (*ebd->elf_info_to_howto) (abfd, relent, &rela);
+ else
+ (*ebd->elf_info_to_howto_rel) (abfd, relent, &rel);
+ }
+
+ asect->relocation = relents;
+
+ if (allocated != NULL)
+ free (allocated);
+
+ return true;
+
+ error_return:
+ if (allocated != NULL)
+ free (allocated);
+ return false;
+}
+
+#ifdef DEBUG
+static void
+elf_debug_section (str, num, hdr)
+ char *str;
+ int num;
+ Elf_Internal_Shdr *hdr;
+{
+ fprintf (stderr, "\nSection#%d '%s' 0x%.8lx\n", num, str, (long) hdr);
+ fprintf (stderr,
+ "sh_name = %ld\tsh_type = %ld\tsh_flags = %ld\n",
+ (long) hdr->sh_name,
+ (long) hdr->sh_type,
+ (long) hdr->sh_flags);
+ fprintf (stderr,
+ "sh_addr = %ld\tsh_offset = %ld\tsh_size = %ld\n",
+ (long) hdr->sh_addr,
+ (long) hdr->sh_offset,
+ (long) hdr->sh_size);
+ fprintf (stderr,
+ "sh_link = %ld\tsh_info = %ld\tsh_addralign = %ld\n",
+ (long) hdr->sh_link,
+ (long) hdr->sh_info,
+ (long) hdr->sh_addralign);
+ fprintf (stderr, "sh_entsize = %ld\n",
+ (long) hdr->sh_entsize);
+ fprintf (stderr, "rawdata = 0x%.8lx\n", (long) hdr->rawdata);
+ fprintf (stderr, "contents = 0x%.8lx\n", (long) hdr->contents);
+ fprintf (stderr, "size = %ld\n", (long) hdr->size);
+ fflush (stderr);
+}
+
+static void
+elf_debug_file (ehdrp)
+ Elf_Internal_Ehdr *ehdrp;
+{
+ fprintf (stderr, "e_entry = 0x%.8lx\n", (long) ehdrp->e_entry);
+ fprintf (stderr, "e_phoff = %ld\n", (long) ehdrp->e_phoff);
+ fprintf (stderr, "e_phnum = %ld\n", (long) ehdrp->e_phnum);
+ fprintf (stderr, "e_phentsize = %ld\n", (long) ehdrp->e_phentsize);
+ fprintf (stderr, "e_shoff = %ld\n", (long) ehdrp->e_shoff);
+ fprintf (stderr, "e_shnum = %ld\n", (long) ehdrp->e_shnum);
+ fprintf (stderr, "e_shentsize = %ld\n", (long) ehdrp->e_shentsize);
+}
+#endif
+
+/* Canonicalize the relocs. */
+
+long
+elf_canonicalize_reloc (abfd, section, relptr, symbols)
+ bfd *abfd;
+ sec_ptr section;
+ arelent **relptr;
+ asymbol **symbols;
+{
+ arelent *tblptr;
+ unsigned int i;
+
+ if (! elf_slurp_reloc_table (abfd, section, symbols))
+ return -1;
+
+ tblptr = section->relocation;
+ for (i = 0; i < section->reloc_count; i++)
+ *relptr++ = tblptr++;
+
+ *relptr = NULL;
+
+ return section->reloc_count;
+}
+
+long
+elf_get_symtab (abfd, alocation)
+ bfd *abfd;
+ asymbol **alocation;
+{
+ long symcount = elf_slurp_symbol_table (abfd, alocation, false);
+
+ if (symcount >= 0)
+ bfd_get_symcount (abfd) = symcount;
+ return symcount;
+}
+
+long
+elf_canonicalize_dynamic_symtab (abfd, alocation)
+ bfd *abfd;
+ asymbol **alocation;
+{
+ return elf_slurp_symbol_table (abfd, alocation, true);
+}
+
+asymbol *
+elf_make_empty_symbol (abfd)
+ bfd *abfd;
+{
+ elf_symbol_type *newsym;
+
+ newsym = (elf_symbol_type *) bfd_zalloc (abfd, sizeof (elf_symbol_type));
+ if (!newsym)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+ else
+ {
+ newsym->symbol.the_bfd = abfd;
+ return &newsym->symbol;
+ }
+}
+
+void
+elf_get_symbol_info (ignore_abfd, symbol, ret)
+ bfd *ignore_abfd;
+ asymbol *symbol;
+ symbol_info *ret;
+{
+ bfd_symbol_info (symbol, ret);
+}
+
+void
+elf_print_symbol (ignore_abfd, filep, symbol, how)
+ bfd *ignore_abfd;
+ PTR filep;
+ asymbol *symbol;
+ bfd_print_symbol_type how;
+{
+ FILE *file = (FILE *) filep;
+ switch (how)
+ {
+ case bfd_print_symbol_name:
+ fprintf (file, "%s", symbol->name);
+ break;
+ case bfd_print_symbol_more:
+ fprintf (file, "elf ");
+ fprintf_vma (file, symbol->value);
+ fprintf (file, " %lx", (long) symbol->flags);
+ break;
+ case bfd_print_symbol_all:
+ {
+ CONST char *section_name;
+ section_name = symbol->section ? symbol->section->name : "(*none*)";
+ bfd_print_symbol_vandf ((PTR) file, symbol);
+ fprintf (file, " %s\t%s",
+ section_name,
+ symbol->name);
+ }
+ break;
+ }
+
+}
+
+alent *
+elf_get_lineno (ignore_abfd, symbol)
+ bfd *ignore_abfd;
+ asymbol *symbol;
+{
+ fprintf (stderr, "elf_get_lineno unimplemented\n");
+ fflush (stderr);
+ BFD_FAIL ();
+ return NULL;
+}
+
+boolean
+elf_set_arch_mach (abfd, arch, machine)
+ bfd *abfd;
+ enum bfd_architecture arch;
+ unsigned long machine;
+{
+ /* If this isn't the right architecture for this backend, and this
+ isn't the generic backend, fail. */
+ if (arch != get_elf_backend_data (abfd)->arch
+ && arch != bfd_arch_unknown
+ && get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
+ return false;
+
+ return bfd_default_set_arch_mach (abfd, arch, machine);
+}
+
+boolean
+elf_find_nearest_line (abfd,
+ section,
+ symbols,
+ offset,
+ filename_ptr,
+ functionname_ptr,
+ line_ptr)
+ bfd *abfd;
+ asection *section;
+ asymbol **symbols;
+ bfd_vma offset;
+ CONST char **filename_ptr;
+ CONST char **functionname_ptr;
+ unsigned int *line_ptr;
+{
+ return false;
+}
+
+int
+elf_sizeof_headers (abfd, reloc)
+ bfd *abfd;
+ boolean reloc;
+{
+ int ret;
+
+ ret = sizeof (Elf_External_Ehdr);
+ if (! reloc)
+ ret += get_program_header_size (abfd);
+ return ret;
+}
+
+boolean
+elf_set_section_contents (abfd, section, location, offset, count)
+ bfd *abfd;
+ sec_ptr section;
+ PTR location;
+ file_ptr offset;
+ bfd_size_type count;
+{
+ Elf_Internal_Shdr *hdr;
+
+ if (! abfd->output_has_begun
+ && ! elf_compute_section_file_positions (abfd,
+ (struct bfd_link_info *) NULL))
+ return false;
+
+ hdr = &elf_section_data (section)->this_hdr;
+
+ if (bfd_seek (abfd, hdr->sh_offset + offset, SEEK_SET) == -1)
+ return false;
+ if (bfd_write (location, 1, count, abfd) != count)
+ return false;
+
+ return true;
+}
+
+void
+elf_no_info_to_howto (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf_Internal_Rela *dst;
+{
+ fprintf (stderr, "elf RELA relocation support for target machine unimplemented\n");
+ fflush (stderr);
+ BFD_FAIL ();
+}
+
+void
+elf_no_info_to_howto_rel (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf_Internal_Rel *dst;
+{
+ fprintf (stderr, "elf REL relocation support for target machine unimplemented\n");
+ fflush (stderr);
+ BFD_FAIL ();
+}
+
+
+/* Core file support */
+
+#ifdef HAVE_PROCFS /* Some core file support requires host /proc files */
+#include <sys/procfs.h>
+#else
+#define bfd_prstatus(abfd, descdata, descsz, filepos) true
+#define bfd_fpregset(abfd, descdata, descsz, filepos) true
+#define bfd_prpsinfo(abfd, descdata, descsz, filepos) true
+#endif
+
+#ifdef HAVE_PROCFS
+
+static boolean
+bfd_prstatus (abfd, descdata, descsz, filepos)
+ bfd *abfd;
+ char *descdata;
+ int descsz;
+ long filepos;
+{
+ asection *newsect;
+ prstatus_t *status = (prstatus_t *) 0;
+
+ if (descsz == sizeof (prstatus_t))
+ {
+ newsect = bfd_make_section (abfd, ".reg");
+ if (newsect == NULL)
+ return false;
+ newsect->_raw_size = sizeof (status->pr_reg);
+ newsect->filepos = filepos + (long) &status->pr_reg;
+ newsect->flags = SEC_HAS_CONTENTS;
+ newsect->alignment_power = 2;
+ if ((core_prstatus (abfd) = bfd_alloc (abfd, descsz)) != NULL)
+ {
+ memcpy (core_prstatus (abfd), descdata, descsz);
+ }
+ }
+ return true;
+}
+
+/* Stash a copy of the prpsinfo structure away for future use. */
+
+static boolean
+bfd_prpsinfo (abfd, descdata, descsz, filepos)
+ bfd *abfd;
+ char *descdata;
+ int descsz;
+ long filepos;
+{
+ if (descsz == sizeof (prpsinfo_t))
+ {
+ if ((core_prpsinfo (abfd) = bfd_alloc (abfd, descsz)) == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ memcpy (core_prpsinfo (abfd), descdata, descsz);
+ }
+ return true;
+}
+
+static boolean
+bfd_fpregset (abfd, descdata, descsz, filepos)
+ bfd *abfd;
+ char *descdata;
+ int descsz;
+ long filepos;
+{
+ asection *newsect;
+
+ newsect = bfd_make_section (abfd, ".reg2");
+ if (newsect == NULL)
+ return false;
+ newsect->_raw_size = descsz;
+ newsect->filepos = filepos;
+ newsect->flags = SEC_HAS_CONTENTS;
+ newsect->alignment_power = 2;
+ return true;
+}
+
+#endif /* HAVE_PROCFS */
+
+/* Return a pointer to the args (including the command name) that were
+ seen by the program that generated the core dump. Note that for
+ some reason, a spurious space is tacked onto the end of the args
+ in some (at least one anyway) implementations, so strip it off if
+ it exists. */
+
+char *
+elf_core_file_failing_command (abfd)
+ bfd *abfd;
+{
+#ifdef HAVE_PROCFS
+ if (core_prpsinfo (abfd))
+ {
+ prpsinfo_t *p = core_prpsinfo (abfd);
+ char *scan = p->pr_psargs;
+ while (*scan++)
+ {;
+ }
+ scan -= 2;
+ if ((scan > p->pr_psargs) && (*scan == ' '))
+ {
+ *scan = '\000';
+ }
+ return p->pr_psargs;
+ }
+#endif
+ return NULL;
+}
+
+/* Return the number of the signal that caused the core dump. Presumably,
+ since we have a core file, we got a signal of some kind, so don't bother
+ checking the other process status fields, just return the signal number.
+ */
+
+int
+elf_core_file_failing_signal (abfd)
+ bfd *abfd;
+{
+#ifdef HAVE_PROCFS
+ if (core_prstatus (abfd))
+ {
+ return ((prstatus_t *) (core_prstatus (abfd)))->pr_cursig;
+ }
+#endif
+ return -1;
+}
+
+/* Check to see if the core file could reasonably be expected to have
+ come for the current executable file. Note that by default we return
+ true unless we find something that indicates that there might be a
+ problem.
+ */
+
+boolean
+elf_core_file_matches_executable_p (core_bfd, exec_bfd)
+ bfd *core_bfd;
+ bfd *exec_bfd;
+{
+#ifdef HAVE_PROCFS
+ char *corename;
+ char *execname;
+#endif
+
+ /* First, xvecs must match since both are ELF files for the same target. */
+
+ if (core_bfd->xvec != exec_bfd->xvec)
+ {
+ bfd_set_error (bfd_error_system_call);
+ return false;
+ }
+
+#ifdef HAVE_PROCFS
+
+ /* If no prpsinfo, just return true. Otherwise, grab the last component
+ of the exec'd pathname from the prpsinfo. */
+
+ if (core_prpsinfo (core_bfd))
+ {
+ corename = (((struct prpsinfo *) core_prpsinfo (core_bfd))->pr_fname);
+ }
+ else
+ {
+ return true;
+ }
+
+ /* Find the last component of the executable pathname. */
+
+ if ((execname = strrchr (exec_bfd->filename, '/')) != NULL)
+ {
+ execname++;
+ }
+ else
+ {
+ execname = (char *) exec_bfd->filename;
+ }
+
+ /* See if they match */
+
+ return strcmp (execname, corename) ? false : true;
+
+#else
+
+ return true;
+
+#endif /* HAVE_PROCFS */
+}
+
+/* ELF core files contain a segment of type PT_NOTE, that holds much of
+ the information that would normally be available from the /proc interface
+ for the process, at the time the process dumped core. Currently this
+ includes copies of the prstatus, prpsinfo, and fpregset structures.
+
+ Since these structures are potentially machine dependent in size and
+ ordering, bfd provides two levels of support for them. The first level,
+ available on all machines since it does not require that the host
+ have /proc support or the relevant include files, is to create a bfd
+ section for each of the prstatus, prpsinfo, and fpregset structures,
+ without any interpretation of their contents. With just this support,
+ the bfd client will have to interpret the structures itself. Even with
+ /proc support, it might want these full structures for it's own reasons.
+
+ In the second level of support, where HAVE_PROCFS is defined, bfd will
+ pick apart the structures to gather some additional information that
+ clients may want, such as the general register set, the name of the
+ exec'ed file and its arguments, the signal (if any) that caused the
+ core dump, etc.
+
+ */
+
+static boolean
+elf_corefile_note (abfd, hdr)
+ bfd *abfd;
+ Elf_Internal_Phdr *hdr;
+{
+ Elf_External_Note *x_note_p; /* Elf note, external form */
+ Elf_Internal_Note i_note; /* Elf note, internal form */
+ char *buf = NULL; /* Entire note segment contents */
+ char *namedata; /* Name portion of the note */
+ char *descdata; /* Descriptor portion of the note */
+ char *sectname; /* Name to use for new section */
+ long filepos; /* File offset to descriptor data */
+ asection *newsect;
+
+ if (hdr->p_filesz > 0
+ && (buf = (char *) malloc (hdr->p_filesz)) != NULL
+ && bfd_seek (abfd, hdr->p_offset, SEEK_SET) != -1
+ && bfd_read ((PTR) buf, hdr->p_filesz, 1, abfd) == hdr->p_filesz)
+ {
+ x_note_p = (Elf_External_Note *) buf;
+ while ((char *) x_note_p < (buf + hdr->p_filesz))
+ {
+ i_note.namesz = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p->namesz);
+ i_note.descsz = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p->descsz);
+ i_note.type = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p->type);
+ namedata = x_note_p->name;
+ descdata = namedata + BFD_ALIGN (i_note.namesz, 4);
+ filepos = hdr->p_offset + (descdata - buf);
+ switch (i_note.type)
+ {
+ case NT_PRSTATUS:
+ /* process descdata as prstatus info */
+ if (! bfd_prstatus (abfd, descdata, i_note.descsz, filepos))
+ return false;
+ sectname = ".prstatus";
+ break;
+ case NT_FPREGSET:
+ /* process descdata as fpregset info */
+ if (! bfd_fpregset (abfd, descdata, i_note.descsz, filepos))
+ return false;
+ sectname = ".fpregset";
+ break;
+ case NT_PRPSINFO:
+ /* process descdata as prpsinfo */
+ if (! bfd_prpsinfo (abfd, descdata, i_note.descsz, filepos))
+ return false;
+ sectname = ".prpsinfo";
+ break;
+ default:
+ /* Unknown descriptor, just ignore it. */
+ sectname = NULL;
+ break;
+ }
+ if (sectname != NULL)
+ {
+ newsect = bfd_make_section (abfd, sectname);
+ if (newsect == NULL)
+ return false;
+ newsect->_raw_size = i_note.descsz;
+ newsect->filepos = filepos;
+ newsect->flags = SEC_ALLOC | SEC_HAS_CONTENTS;
+ newsect->alignment_power = 2;
+ }
+ x_note_p = (Elf_External_Note *)
+ (descdata + BFD_ALIGN (i_note.descsz, 4));
+ }
+ }
+ if (buf != NULL)
+ {
+ free (buf);
+ }
+ else if (hdr->p_filesz > 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ return true;
+
+}
+
+/* Core files are simply standard ELF formatted files that partition
+ the file using the execution view of the file (program header table)
+ rather than the linking view. In fact, there is no section header
+ table in a core file.
+
+ The process status information (including the contents of the general
+ register set) and the floating point register set are stored in a
+ segment of type PT_NOTE. We handcraft a couple of extra bfd sections
+ that allow standard bfd access to the general registers (.reg) and the
+ floating point registers (.reg2).
+
+ */
+
+const bfd_target *
+elf_core_file_p (abfd)
+ bfd *abfd;
+{
+ Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_External_Phdr x_phdr; /* Program header table entry, external form */
+ Elf_Internal_Phdr *i_phdrp; /* Program header table, internal form */
+ unsigned int phindex;
+ struct elf_backend_data *ebd;
+
+ /* Read in the ELF header in external format. */
+
+ if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr))
+ {
+ if (bfd_get_error () != bfd_error_system_call)
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+
+ /* Now check to see if we have a valid ELF file, and one that BFD can
+ make use of. The magic number must match, the address size ('class')
+ and byte-swapping must match our XVEC entry, and it must have a
+ program header table (FIXME: See comments re segments at top of this
+ file). */
+
+ if (elf_file_p (&x_ehdr) == false)
+ {
+ wrong:
+ bfd_set_error (bfd_error_wrong_format);
+ return NULL;
+ }
+
+ /* FIXME, Check EI_VERSION here ! */
+
+ {
+#if ARCH_SIZE == 32
+ int desired_address_size = ELFCLASS32;
+#endif
+#if ARCH_SIZE == 64
+ int desired_address_size = ELFCLASS64;
+#endif
+
+ if (x_ehdr.e_ident[EI_CLASS] != desired_address_size)
+ goto wrong;
+ }
+
+ /* Switch xvec to match the specified byte order. */
+ switch (x_ehdr.e_ident[EI_DATA])
+ {
+ case ELFDATA2MSB: /* Big-endian */
+ if (abfd->xvec->byteorder_big_p == false)
+ goto wrong;
+ break;
+ case ELFDATA2LSB: /* Little-endian */
+ if (abfd->xvec->byteorder_big_p == true)
+ goto wrong;
+ break;
+ case ELFDATANONE: /* No data encoding specified */
+ default: /* Unknown data encoding specified */
+ goto wrong;
+ }
+
+ /* Allocate an instance of the elf_obj_tdata structure and hook it up to
+ the tdata pointer in the bfd. */
+
+ elf_tdata (abfd) =
+ (struct elf_obj_tdata *) bfd_zalloc (abfd, sizeof (struct elf_obj_tdata));
+ if (elf_tdata (abfd) == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ /* FIXME, `wrong' returns from this point onward, leak memory. */
+
+ /* Now that we know the byte order, swap in the rest of the header */
+ i_ehdrp = elf_elfheader (abfd);
+ elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
+#if DEBUG & 1
+ elf_debug_file (i_ehdrp);
+#endif
+
+ ebd = get_elf_backend_data (abfd);
+
+ /* Check that the ELF e_machine field matches what this particular
+ BFD format expects. */
+ if (ebd->elf_machine_code != i_ehdrp->e_machine)
+ {
+ const bfd_target * const *target_ptr;
+
+ if (ebd->elf_machine_code != EM_NONE)
+ goto wrong;
+
+ /* This is the generic ELF target. Let it match any ELF target
+ for which we do not have a specific backend. */
+ for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
+ {
+ struct elf_backend_data *back;
+
+ if ((*target_ptr)->flavour != bfd_target_elf_flavour)
+ continue;
+ back = (struct elf_backend_data *) (*target_ptr)->backend_data;
+ if (back->elf_machine_code == i_ehdrp->e_machine)
+ {
+ /* target_ptr is an ELF backend which matches this
+ object file, so reject the generic ELF target. */
+ goto wrong;
+ }
+ }
+ }
+
+ /* If there is no program header, or the type is not a core file, then
+ we are hosed. */
+ if (i_ehdrp->e_phoff == 0 || i_ehdrp->e_type != ET_CORE)
+ goto wrong;
+
+ /* Allocate space for a copy of the program header table in
+ internal form, seek to the program header table in the file,
+ read it in, and convert it to internal form. As a simple sanity
+ check, verify that the what BFD thinks is the size of each program
+ header table entry actually matches the size recorded in the file. */
+
+ if (i_ehdrp->e_phentsize != sizeof (x_phdr))
+ goto wrong;
+ i_phdrp = (Elf_Internal_Phdr *)
+ bfd_alloc (abfd, sizeof (*i_phdrp) * i_ehdrp->e_phnum);
+ if (!i_phdrp)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+ if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) == -1)
+ return NULL;
+ for (phindex = 0; phindex < i_ehdrp->e_phnum; phindex++)
+ {
+ if (bfd_read ((PTR) & x_phdr, sizeof (x_phdr), 1, abfd)
+ != sizeof (x_phdr))
+ return NULL;
+ elf_swap_phdr_in (abfd, &x_phdr, i_phdrp + phindex);
+ }
+
+ /* Once all of the program headers have been read and converted, we
+ can start processing them. */
+
+ for (phindex = 0; phindex < i_ehdrp->e_phnum; phindex++)
+ {
+ bfd_section_from_phdr (abfd, i_phdrp + phindex, phindex);
+ if ((i_phdrp + phindex)->p_type == PT_NOTE)
+ {
+ if (! elf_corefile_note (abfd, i_phdrp + phindex))
+ return NULL;
+ }
+ }
+
+ /* Remember the entry point specified in the ELF file header. */
+
+ bfd_get_start_address (abfd) = i_ehdrp->e_entry;
+
+ return abfd->xvec;
+}
+
+/* ELF linker code. */
+
+static boolean elf_link_add_object_symbols
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean elf_link_add_archive_symbols
+ PARAMS ((bfd *, struct bfd_link_info *));
+static INLINE boolean elf_link_record_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
+static boolean elf_link_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean elf_adjust_dynamic_symbol
+ PARAMS ((struct elf_link_hash_entry *, PTR));
+
+/* Given an ELF BFD, add symbols to the global hash table as
+ appropriate. */
+
+boolean
+elf_bfd_link_add_symbols (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ switch (bfd_get_format (abfd))
+ {
+ case bfd_object:
+ return elf_link_add_object_symbols (abfd, info);
+ case bfd_archive:
+ return elf_link_add_archive_symbols (abfd, info);
+ default:
+ bfd_set_error (bfd_error_wrong_format);
+ return false;
+ }
+}
+
+/* Add symbols from an ELF archive file to the linker hash table. We
+ don't use _bfd_generic_link_add_archive_symbols because of a
+ problem which arises on UnixWare. The UnixWare libc.so is an
+ archive which includes an entry libc.so.1 which defines a bunch of
+ symbols. The libc.so archive also includes a number of other
+ object files, which also define symbols, some of which are the same
+ as those defined in libc.so.1. Correct linking requires that we
+ consider each object file in turn, and include it if it defines any
+ symbols we need. _bfd_generic_link_add_archive_symbols does not do
+ this; it looks through the list of undefined symbols, and includes
+ any object file which defines them. When this algorithm is used on
+ UnixWare, it winds up pulling in libc.so.1 early and defining a
+ bunch of symbols. This means that some of the other objects in the
+ archive are not included in the link, which is incorrect since they
+ precede libc.so.1 in the archive.
+
+ Fortunately, ELF archive handling is simpler than that done by
+ _bfd_generic_link_add_archive_symbols, which has to allow for a.out
+ oddities. In ELF, if we find a symbol in the archive map, and the
+ symbol is currently undefined, we know that we must pull in that
+ object file.
+
+ Unfortunately, we do have to make multiple passes over the symbol
+ table until nothing further is resolved. */
+
+static boolean
+elf_link_add_archive_symbols (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ symindex c;
+ boolean *defined = NULL;
+ boolean *included = NULL;
+ carsym *symdefs;
+ boolean loop;
+
+ if (! bfd_has_map (abfd))
+ {
+ bfd_set_error (bfd_error_no_symbols);
+ return false;
+ }
+
+ /* Keep track of all symbols we know to be already defined, and all
+ files we know to be already included. This is to speed up the
+ second and subsequent passes. */
+ c = bfd_ardata (abfd)->symdef_count;
+ if (c == 0)
+ return true;
+ defined = (boolean *) malloc (c * sizeof (boolean));
+ included = (boolean *) malloc (c * sizeof (boolean));
+ if (defined == (boolean *) NULL || included == (boolean *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ memset (defined, 0, c * sizeof (boolean));
+ memset (included, 0, c * sizeof (boolean));
+
+ symdefs = bfd_ardata (abfd)->symdefs;
+
+ do
+ {
+ file_ptr last;
+ symindex i;
+ carsym *symdef;
+ carsym *symdefend;
+
+ loop = false;
+ last = -1;
+
+ symdef = symdefs;
+ symdefend = symdef + c;
+ for (i = 0; symdef < symdefend; symdef++, i++)
+ {
+ struct elf_link_hash_entry *h;
+ bfd *element;
+ struct bfd_link_hash_entry *undefs_tail;
+ symindex mark;
+
+ if (defined[i] || included[i])
+ continue;
+ if (symdef->file_offset == last)
+ {
+ included[i] = true;
+ continue;
+ }
+
+ h = elf_link_hash_lookup (elf_hash_table (info), symdef->name,
+ false, false, false);
+ if (h == (struct elf_link_hash_entry *) NULL)
+ continue;
+ if (h->root.type != bfd_link_hash_undefined)
+ {
+ defined[i] = true;
+ continue;
+ }
+
+ /* We need to include this archive member. */
+
+ element = _bfd_get_elt_at_filepos (abfd, symdef->file_offset);
+ if (element == (bfd *) NULL)
+ goto error_return;
+
+ if (! bfd_check_format (element, bfd_object))
+ goto error_return;
+
+ /* Doublecheck that we have not included this object
+ already--it should be impossible, but there may be
+ something wrong with the archive. */
+ if (element->archive_pass != 0)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+ element->archive_pass = 1;
+
+ undefs_tail = info->hash->undefs_tail;
+
+ if (! (*info->callbacks->add_archive_element) (info, element,
+ symdef->name))
+ goto error_return;
+ if (! elf_link_add_object_symbols (element, info))
+ goto error_return;
+
+ /* If there are any new undefined symbols, we need to make
+ another pass through the archive in order to see whether
+ they can be defined. FIXME: This isn't perfect, because
+ common symbols wind up on undefs_tail and because an
+ undefined symbol which is defined later on in this pass
+ does not require another pass. This isn't a bug, but it
+ does make the code less efficient than it could be. */
+ if (undefs_tail != info->hash->undefs_tail)
+ loop = true;
+
+ /* Look backward to mark all symbols from this object file
+ which we have already seen in this pass. */
+ mark = i;
+ do
+ {
+ included[mark] = true;
+ if (mark == 0)
+ break;
+ --mark;
+ }
+ while (symdefs[mark].file_offset == symdef->file_offset);
+
+ /* We mark subsequent symbols from this object file as we go
+ on through the loop. */
+ last = symdef->file_offset;
+ }
+ }
+ while (loop);
+
+ free (defined);
+ free (included);
+
+ return true;
+
+ error_return:
+ if (defined != (boolean *) NULL)
+ free (defined);
+ if (included != (boolean *) NULL)
+ free (included);
+ return false;
+}
+
+/* Record a new dynamic symbol. We record the dynamic symbols as we
+ read the input files, since we need to have a list of all of them
+ before we can determine the final sizes of the output sections. */
+
+static INLINE boolean
+elf_link_record_dynamic_symbol (info, h)
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
+{
+ if (h->dynindx == -1)
+ {
+ h->dynindx = elf_hash_table (info)->dynsymcount;
+ ++elf_hash_table (info)->dynsymcount;
+ h->dynstr_index = bfd_add_to_strtab (elf_hash_table (info)->dynobj,
+ elf_hash_table (info)->dynstr,
+ h->root.root.string);
+ if (h->dynstr_index == (unsigned long) -1)
+ return false;
+ }
+
+ return true;
+}
+
+/* Add symbols from an ELF object file to the linker hash table. */
+
+static boolean
+elf_link_add_object_symbols (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ boolean (*add_symbol_hook) PARAMS ((bfd *, struct bfd_link_info *,
+ const Elf_Internal_Sym *,
+ const char **, flagword *,
+ asection **, bfd_vma *));
+ boolean collect;
+ Elf_Internal_Shdr *hdr;
+ size_t symcount;
+ size_t extsymcount;
+ size_t extsymoff;
+ Elf_External_Sym *buf = NULL;
+ struct elf_link_hash_entry **sym_hash;
+ boolean dynamic;
+ Elf_External_Dyn *dynbuf = NULL;
+ struct elf_link_hash_entry *weaks;
+ Elf_External_Sym *esym;
+ Elf_External_Sym *esymend;
+
+ add_symbol_hook = get_elf_backend_data (abfd)->elf_add_symbol_hook;
+ collect = get_elf_backend_data (abfd)->collect;
+
+ hdr = &elf_tdata (abfd)->symtab_hdr;
+ symcount = hdr->sh_size / sizeof (Elf_External_Sym);
+
+ /* The sh_info field of the symtab header tells us where the
+ external symbols start. We don't care about the local symbols at
+ this point. */
+ if (elf_bad_symtab (abfd))
+ {
+ extsymcount = symcount;
+ extsymoff = 0;
+ }
+ else
+ {
+ extsymcount = symcount - hdr->sh_info;
+ extsymoff = hdr->sh_info;
+ }
+
+ buf = (Elf_External_Sym *) malloc (extsymcount * sizeof (Elf_External_Sym));
+ if (buf == NULL && extsymcount != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ /* We store a pointer to the hash table entry for each external
+ symbol. */
+ sym_hash = ((struct elf_link_hash_entry **)
+ bfd_alloc (abfd,
+ extsymcount * sizeof (struct elf_link_hash_entry *)));
+ if (sym_hash == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ elf_sym_hashes (abfd) = sym_hash;
+
+ if (elf_elfheader (abfd)->e_type != ET_DYN)
+ {
+ dynamic = false;
+
+ /* If we are creating a shared library, create all the dynamic
+ sections immediately. We need to attach them to something,
+ so we attach them to this BFD, provided it is the right
+ format. FIXME: If there are no input BFD's of the same
+ format as the output, we can't make a shared library. */
+ if (info->shared
+ && elf_hash_table (info)->dynobj == NULL
+ && abfd->xvec == info->hash->creator)
+ {
+ if (! elf_link_create_dynamic_sections (abfd, info))
+ goto error_return;
+ elf_hash_table (info)->dynobj = abfd;
+ }
+ }
+ else
+ {
+ asection *s;
+ const char *name;
+ unsigned long strindex;
+
+ dynamic = true;
+
+ /* You can't use -r against a dynamic object. There's no hope
+ of using a dynamic object which does not exactly match the
+ format of the output file. */
+ if (info->relocateable
+ || info->hash->creator != abfd->xvec)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ goto error_return;
+ }
+
+ /* Find the name to use in a DT_NEEDED entry that refers to this
+ object. If the object has a DT_SONAME entry, we use it.
+ Otherwise, if the generic linker stuck something in
+ elf_dt_needed_name, we use that. Otherwise, we just use the
+ file name. */
+ name = bfd_get_filename (abfd);
+ if (elf_dt_needed_name (abfd) != NULL)
+ name = elf_dt_needed_name (abfd);
+ s = bfd_get_section_by_name (abfd, ".dynamic");
+ if (s != NULL)
+ {
+ Elf_External_Dyn *extdyn;
+ Elf_External_Dyn *extdynend;
+
+ dynbuf = (Elf_External_Dyn *) malloc (s->_raw_size);
+ if (dynbuf == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf,
+ (file_ptr) 0, s->_raw_size))
+ goto error_return;
+
+ extdyn = dynbuf;
+ extdynend = extdyn + s->_raw_size / sizeof (Elf_External_Dyn);
+ for (; extdyn < extdynend; extdyn++)
+ {
+ Elf_Internal_Dyn dyn;
+
+ elf_swap_dyn_in (abfd, extdyn, &dyn);
+ if (dyn.d_tag == DT_SONAME)
+ {
+ int elfsec;
+ unsigned long link;
+
+ elfsec = elf_section_from_bfd_section (abfd, s);
+ if (elfsec == -1)
+ goto error_return;
+ link = elf_elfsections (abfd)[elfsec]->sh_link;
+ name = elf_string_from_elf_section (abfd, link,
+ dyn.d_un.d_val);
+ if (name == NULL)
+ goto error_return;
+
+ break;
+ }
+ }
+
+ free (dynbuf);
+ dynbuf = NULL;
+ }
+
+ /* We do not want to include any of the sections in a dynamic
+ object in the output file. We hack by simply clobbering the
+ list of sections in the BFD. This could be handled more
+ cleanly by, say, a new section flag; the existing
+ SEC_NEVER_LOAD flag is not the one we want, because that one
+ still implies that the section takes up space in the output
+ file. */
+ abfd->sections = NULL;
+
+ /* If this is the first dynamic object found in the link, create
+ the special sections required for dynamic linking. We need
+ to put them somewhere, and attaching them to the first
+ dynamic object is as good place as any. */
+ if (elf_hash_table (info)->dynobj == NULL)
+ {
+ if (! elf_link_create_dynamic_sections (abfd, info))
+ goto error_return;
+ elf_hash_table (info)->dynobj = abfd;
+ }
+
+ /* Add a DT_NEEDED entry for this dynamic object. */
+ strindex = bfd_add_to_strtab (abfd,
+ elf_hash_table (info)->dynstr,
+ name);
+
+ if (strindex == (unsigned long) -1)
+ goto error_return;
+ if (! elf_add_dynamic_entry (info, DT_NEEDED, strindex))
+ goto error_return;
+ }
+
+ if (bfd_seek (abfd,
+ hdr->sh_offset + extsymoff * sizeof (Elf_External_Sym),
+ SEEK_SET) != 0
+ || (bfd_read ((PTR) buf, sizeof (Elf_External_Sym), extsymcount, abfd)
+ != extsymcount * sizeof (Elf_External_Sym)))
+ goto error_return;
+
+ weaks = NULL;
+
+ esymend = buf + extsymcount;
+ for (esym = buf; esym < esymend; esym++, sym_hash++)
+ {
+ Elf_Internal_Sym sym;
+ int bind;
+ bfd_vma value;
+ asection *sec;
+ flagword flags;
+ const char *name;
+ struct elf_link_hash_entry *h = NULL;
+ boolean definition;
+
+ elf_swap_symbol_in (abfd, esym, &sym);
+
+ flags = BSF_NO_FLAGS;
+ sec = NULL;
+ value = sym.st_value;
+ *sym_hash = NULL;
+
+ bind = ELF_ST_BIND (sym.st_info);
+ if (bind == STB_LOCAL)
+ {
+ /* This should be impossible, since ELF requires that all
+ global symbols follow all local symbols, and that sh_info
+ point to the first global symbol. Unfortunatealy, Irix 5
+ screws this up. */
+ continue;
+ }
+ else if (bind == STB_GLOBAL)
+ flags = BSF_GLOBAL;
+ else if (bind == STB_WEAK)
+ flags = BSF_WEAK;
+ else
+ {
+ /* Leave it up to the processor backend. */
+ }
+
+ if (sym.st_shndx == SHN_UNDEF)
+ sec = bfd_und_section_ptr;
+ else if (sym.st_shndx > 0 && sym.st_shndx < SHN_LORESERVE)
+ {
+ sec = section_from_elf_index (abfd, sym.st_shndx);
+ if (sec == NULL)
+ goto error_return;
+ value -= sec->vma;
+ }
+ else if (sym.st_shndx == SHN_ABS)
+ sec = bfd_abs_section_ptr;
+ else if (sym.st_shndx == SHN_COMMON)
+ {
+ sec = bfd_com_section_ptr;
+ /* What ELF calls the size we call the value. What ELF
+ calls the value we call the alignment. */
+ value = sym.st_size;
+ }
+ else
+ {
+ /* Leave it up to the processor backend. */
+ }
+
+ name = elf_string_from_elf_section (abfd, hdr->sh_link, sym.st_name);
+ if (name == (const char *) NULL)
+ goto error_return;
+
+ if (add_symbol_hook)
+ {
+ if (! (*add_symbol_hook) (abfd, info, &sym, &name, &flags, &sec,
+ &value))
+ goto error_return;
+
+ /* The hook function sets the name to NULL if this symbol
+ should be skipped for some reason. */
+ if (name == (const char *) NULL)
+ continue;
+ }
+
+ /* Sanity check that all possibilities were handled. */
+ if (flags == BSF_NO_FLAGS || sec == (asection *) NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
+
+ if (bfd_is_und_section (sec)
+ || bfd_is_com_section (sec))
+ definition = false;
+ else
+ definition = true;
+
+ if (info->hash->creator->flavour == bfd_target_elf_flavour)
+ {
+ /* We need to look up the symbol now in order to get some of
+ the dynamic object handling right. We pass the hash
+ table entry in to _bfd_generic_link_add_one_symbol so
+ that it does not have to look it up again. */
+ h = elf_link_hash_lookup (elf_hash_table (info), name,
+ true, false, false);
+ if (h == NULL)
+ goto error_return;
+ *sym_hash = h;
+
+ /* If we are looking at a dynamic object, and this is a
+ definition, we need to see if it has already been defined
+ by some other object. If it has, we want to use the
+ existing definition, and we do not want to report a
+ multiple symbol definition error; we do this by
+ clobbering sec to be bfd_und_section_ptr. */
+ if (dynamic && definition)
+ {
+ if (h->root.type == bfd_link_hash_defined)
+ sec = bfd_und_section_ptr;
+ }
+
+ /* Similarly, if we are not looking at a dynamic object, and
+ we have a definition, we want to override any definition
+ we may have from a dynamic object. Symbols from regular
+ files always take precedence over symbols from dynamic
+ objects, even if they are defined after the dynamic
+ object in the link. */
+ if (! dynamic
+ && definition
+ && h->root.type == bfd_link_hash_defined
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
+ && (bfd_get_flavour (h->root.u.def.section->owner)
+ == bfd_target_elf_flavour)
+ && (elf_elfheader (h->root.u.def.section->owner)->e_type
+ == ET_DYN))
+ {
+ /* Change the hash table entry to undefined, and let
+ _bfd_generic_link_add_one_symbol do the right thing
+ with the new definition. */
+ h->root.type = bfd_link_hash_undefined;
+ h->root.u.undef.abfd = h->root.u.def.section->owner;
+ h->elf_link_hash_flags &=~ ELF_LINK_HASH_DEFINED_WEAK;
+ }
+
+ /* If this is a weak definition which we are going to use,
+ and the symbol is currently undefined, record that the
+ definition is weak. */
+ if (definition
+ && (flags & BSF_WEAK) != 0
+ && ! bfd_is_und_section (sec)
+ && (h->root.type == bfd_link_hash_new
+ || h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_weak))
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEFINED_WEAK;
+ }
+
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, name, flags, sec, value, (const char *) NULL,
+ false, collect, (struct bfd_link_hash_entry **) sym_hash)))
+ goto error_return;
+
+ if (dynamic
+ && definition
+ && (flags & BSF_WEAK) != 0
+ && ELF_ST_TYPE (sym.st_info) != STT_FUNC
+ && (*sym_hash)->weakdef == NULL)
+ {
+ /* Keep a list of all weak defined non function symbols from
+ a dynamic object, using the weakdef field. Later in this
+ function we will set the weakdef field to the correct
+ value. We only put non-function symbols from dynamic
+ objects on this list, because that happens to be the only
+ time we need to know the normal symbol corresponding to a
+ weak symbol, and the information is time consuming to
+ figure out. If the weakdef field is not already NULL,
+ then this symbol was already defined by some previous
+ dynamic object, and we will be using that previous
+ definition anyhow. */
+
+ (*sym_hash)->weakdef = weaks;
+ weaks = *sym_hash;
+ }
+
+ if (info->hash->creator->flavour == bfd_target_elf_flavour)
+ {
+ int old_flags;
+ boolean dynsym;
+ int new_flag;
+
+ /* Remember the symbol size, type and alignment. */
+ if (sym.st_size != 0)
+ {
+ /* FIXME: We should probably somehow give a warning if
+ the symbol size changes. */
+ h->size = sym.st_size;
+ }
+ if (sym.st_shndx == SHN_COMMON
+ && sym.st_value > h->align)
+ h->align = sym.st_value;
+ if (ELF_ST_TYPE (sym.st_info) != STT_NOTYPE)
+ {
+ /* FIXME: We should probably somehow give a warning if
+ the symbol type changes. */
+ h->type = ELF_ST_TYPE (sym.st_info);
+ }
+
+ /* Set a flag in the hash table entry indicating the type of
+ reference or definition we just found. Keep a count of
+ the number of dynamic symbols we find. A dynamic symbol
+ is one which is referenced or defined by both a regular
+ object and a shared object, or one which is referenced or
+ defined by more than one shared object. */
+ old_flags = h->elf_link_hash_flags;
+ dynsym = false;
+ if (! dynamic)
+ {
+ if (! definition)
+ new_flag = ELF_LINK_HASH_REF_REGULAR;
+ else
+ new_flag = ELF_LINK_HASH_DEF_REGULAR;
+ if ((old_flags & (ELF_LINK_HASH_DEF_DYNAMIC
+ | ELF_LINK_HASH_REF_DYNAMIC)) != 0)
+ dynsym = true;
+ }
+ else
+ {
+ if (! definition)
+ new_flag = ELF_LINK_HASH_REF_DYNAMIC;
+ else
+ new_flag = ELF_LINK_HASH_DEF_DYNAMIC;
+ if ((old_flags & new_flag) != 0)
+ {
+ if (! definition)
+ new_flag = ELF_LINK_HASH_REF_DYNAMIC_MULTIPLE;
+ else
+ new_flag = ELF_LINK_HASH_DEF_DYNAMIC_MULTIPLE;
+ dynsym = true;
+ }
+ else
+ {
+ if ((old_flags & (ELF_LINK_HASH_DEF_REGULAR
+ | ELF_LINK_HASH_REF_REGULAR)) != 0)
+ dynsym = true;
+ }
+ }
+
+ h->elf_link_hash_flags |= new_flag;
+ if (dynsym && h->dynindx == -1)
+ {
+ if (! elf_link_record_dynamic_symbol (info, h))
+ goto error_return;
+ }
+ }
+ }
+
+ /* Now set the weakdefs field correctly for all the weak defined
+ symbols we found. The only way to do this is to search all the
+ symbols. Since we only need the information for non functions in
+ dynamic objects, that's the only time we actually put anything on
+ the list WEAKS. We need this information so that if a regular
+ object refers to a symbol defined weakly in a dynamic object, the
+ real symbol in the dynamic object is also put in the dynamic
+ symbols; we also must arrange for both symbols to point to the
+ same memory location. We could handle the general case of symbol
+ aliasing, but a general symbol alias can only be generated in
+ assembler code, handling it correctly would be very time
+ consuming, and other ELF linkers don't handle general aliasing
+ either. */
+ while (weaks != NULL)
+ {
+ struct elf_link_hash_entry *hlook;
+ asection *slook;
+ bfd_vma vlook;
+ struct elf_link_hash_entry **hpp;
+ struct elf_link_hash_entry **hppend;
+
+ hlook = weaks;
+ weaks = hlook->weakdef;
+ hlook->weakdef = NULL;
+
+ BFD_ASSERT (hlook->root.type == bfd_link_hash_defined);
+ slook = hlook->root.u.def.section;
+ vlook = hlook->root.u.def.value;
+
+ hpp = elf_sym_hashes (abfd);
+ hppend = hpp + extsymcount;
+ for (; hpp < hppend; hpp++)
+ {
+ struct elf_link_hash_entry *h;
+
+ h = *hpp;
+ if (h != hlook
+ && h->root.type == bfd_link_hash_defined
+ && h->root.u.def.section == slook
+ && h->root.u.def.value == vlook)
+ {
+ hlook->weakdef = h;
+
+ /* If the weak definition is in the list of dynamic
+ symbols, make sure the real definition is put there
+ as well. */
+ if (hlook->dynindx != -1
+ && h->dynindx == -1)
+ {
+ if (! elf_link_record_dynamic_symbol (info, h))
+ goto error_return;
+ }
+
+ break;
+ }
+ }
+ }
+
+ if (buf != NULL)
+ free (buf);
+
+ return true;
+
+ error_return:
+ if (buf != NULL)
+ free (buf);
+ if (dynbuf != NULL)
+ free (dynbuf);
+ return false;
+}
+
+/* Create some sections which will be filled in with dynamic linking
+ information. The ABFD argument is an input file which is a dynamic
+ object. The dynamic sections take up virtual memory space when the
+ final executable is run, so we need to create them before addresses
+ are assigned to the output sections. We work out the actual
+ contents and size of these sections later. */
+
+static boolean
+elf_link_create_dynamic_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ flagword flags;
+ register asection *s;
+ struct elf_link_hash_entry *h;
+ struct elf_backend_data *bed;
+
+ /* Note that we set the SEC_IN_MEMORY flag for all of these
+ sections. */
+ flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+
+ /* A dynamically linked executable has a .interp section, but a
+ shared library does not. */
+ if (! info->shared)
+ {
+ s = bfd_make_section (abfd, ".interp");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY))
+ return false;
+ }
+
+ s = bfd_make_section (abfd, ".dynamic");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags)
+ || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
+ return false;
+
+ /* The special symbol _DYNAMIC is always set to the start of the
+ .dynamic section. This call occurs before we have processed the
+ symbols for any dynamic object, so we don't have to worry about
+ overriding a dynamic definition. We could set _DYNAMIC in a
+ linker script, but we only want to define it if we are, in fact,
+ creating a .dynamic section. We don't want to define it if there
+ is no .dynamic section, since on some ELF platforms the start up
+ code examines it to decide how to initialize the process. */
+ h = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, "_DYNAMIC", BSF_GLOBAL, s, (bfd_vma) 0,
+ (const char *) NULL, false, get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
+
+ s = bfd_make_section (abfd, ".dynsym");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
+ return false;
+
+ /* The first .dynsym symbol is a dummy. */
+ elf_hash_table (info)->dynsymcount = 1;
+
+ s = bfd_make_section (abfd, ".dynstr");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY))
+ return false;
+
+ /* Create a strtab to hold the dynamic symbol names. */
+ elf_hash_table (info)->dynstr = bfd_new_strtab (abfd);
+ if (elf_hash_table (info)->dynstr == NULL)
+ return false;
+
+ s = bfd_make_section (abfd, ".hash");
+ if (s == NULL
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || ! bfd_set_section_alignment (abfd, s, LOG_FILE_ALIGN))
+ return false;
+
+ /* Let the backend create the rest of the sections. This lets the
+ backend set the right flags. The backend will normally create
+ the .got and .plt sections. */
+ bed = get_elf_backend_data (abfd);
+ return (*bed->elf_backend_create_dynamic_sections) (abfd, info);
+}
+
+/* Add an entry to the .dynamic table. */
+
+boolean
+elf_add_dynamic_entry (info, tag, val)
+ struct bfd_link_info *info;
+ bfd_vma tag;
+ bfd_vma val;
+{
+ Elf_Internal_Dyn dyn;
+ bfd *dynobj;
+ asection *s;
+ size_t newsize;
+ bfd_byte *newcontents;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ s = bfd_get_section_by_name (dynobj, ".dynamic");
+ BFD_ASSERT (s != NULL);
+
+ newsize = s->_raw_size + sizeof (Elf_External_Dyn);
+ if (s->contents == NULL)
+ newcontents = (bfd_byte *) malloc (newsize);
+ else
+ newcontents = (bfd_byte *) realloc (s->contents, newsize);
+ if (newcontents == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ dyn.d_tag = tag;
+ dyn.d_un.d_val = val;
+ elf_swap_dyn_out (dynobj, &dyn,
+ (Elf_External_Dyn *) (newcontents + s->_raw_size));
+
+ s->_raw_size = newsize;
+ s->contents = newcontents;
+
+ return true;
+}
+
+/* Record an assignment to a symbol made by a linker script. We need
+ this in case some dynamic object refers to this symbol. */
+
+/*ARGSUSED*/
+boolean
+NAME(bfd_elf,record_link_assignment) (output_bfd, info, name)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ const char *name;
+{
+ struct elf_link_hash_entry *h;
+
+ /* This is called after we have examined all the input objects. If
+ the symbol does not exist, it merely means that no object refers
+ to it, and we can just ignore it at this point. */
+ h = elf_link_hash_lookup (elf_hash_table (info), name,
+ false, false, false);
+ if (h == NULL)
+ return true;
+
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
+
+ if ((h->elf_link_hash_flags & (ELF_LINK_HASH_DEF_DYNAMIC
+ | ELF_LINK_HASH_REF_DYNAMIC)) != 0
+ && h->dynindx == -1)
+ {
+ if (! elf_link_record_dynamic_symbol (info, h))
+ return false;
+
+ /* If this is a weak defined symbol, and we know a corresponding
+ real symbol from the same dynamic object, make sure the real
+ symbol is also made into a dynamic symbol. */
+ if (h->weakdef != NULL
+ && h->weakdef->dynindx == -1)
+ {
+ if (! elf_link_record_dynamic_symbol (info, h->weakdef))
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/* Array used to determine the number of hash table buckets to use
+ based on the number of symbols there are. If there are fewer than
+ 3 symbols we use 1 bucket, fewer than 17 symbols we use 3 buckets,
+ fewer than 37 we use 17 buckets, and so forth. We never use more
+ than 521 buckets. */
+
+static const size_t elf_buckets[] =
+{
+ 1, 3, 17, 37, 67, 97, 131, 197, 263, 521, 0
+};
+
+/* Set up the sizes and contents of the ELF dynamic sections. This is
+ called by the ELF linker emulation before_allocation routine. We
+ must set the sizes of the sections before the linker sets the
+ addresses of the various sections. */
+
+boolean
+NAME(bfd_elf,size_dynamic_sections) (output_bfd, info, sinterpptr)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ asection **sinterpptr;
+{
+ bfd *dynobj;
+ size_t dynsymcount;
+ asection *s;
+ Elf_Internal_Sym isym;
+ size_t i;
+ size_t bucketcount;
+ struct elf_backend_data *bed;
+
+ *sinterpptr = NULL;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ dynsymcount = elf_hash_table (info)->dynsymcount;
+
+ /* If there were no dynamic objects in the link, there is nothing to
+ do here. */
+ if (dynobj == NULL)
+ return true;
+
+ *sinterpptr = bfd_get_section_by_name (dynobj, ".interp");
+ BFD_ASSERT (*sinterpptr != NULL || info->shared);
+
+ /* Set the size of the .dynsym and .hash sections. We counted the
+ number of dynamic symbols in elf_link_add_object_symbols. We
+ will build the contents of .dynsym and .hash when we build the
+ final symbol table, because until then we do not know the correct
+ value to give the symbols. We built the .dynstr section as we
+ went along in elf_link_add_object_symbols. */
+ s = bfd_get_section_by_name (dynobj, ".dynsym");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size = dynsymcount * sizeof (Elf_External_Sym);
+ s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size);
+ if (s->contents == NULL && s->_raw_size != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ /* The first entry in .dynsym is a dummy symbol. */
+ isym.st_value = 0;
+ isym.st_size = 0;
+ isym.st_name = 0;
+ isym.st_info = 0;
+ isym.st_other = 0;
+ isym.st_shndx = 0;
+ elf_swap_symbol_out (output_bfd, &isym,
+ (Elf_External_Sym *) s->contents);
+
+ for (i = 0; elf_buckets[i] != 0; i++)
+ {
+ bucketcount = elf_buckets[i];
+ if (dynsymcount < elf_buckets[i + 1])
+ break;
+ }
+
+ s = bfd_get_section_by_name (dynobj, ".hash");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size = (2 + bucketcount + dynsymcount) * (ARCH_SIZE / 8);
+ s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size);
+ if (s->contents == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ memset (s->contents, 0, s->_raw_size);
+
+ put_word (output_bfd, bucketcount, s->contents);
+ put_word (output_bfd, dynsymcount, s->contents + (ARCH_SIZE / 8));
+
+ elf_hash_table (info)->bucketcount = bucketcount;
+
+ s = bfd_get_section_by_name (dynobj, ".dynstr");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size = elf_hash_table (info)->dynstr->length;
+ s->contents = (unsigned char *) elf_hash_table (info)->dynstr->tab;
+
+ /* Find all symbols which were defined in a dynamic object and make
+ the backend pick a reasonable value for them. */
+ elf_link_hash_traverse (elf_hash_table (info),
+ elf_adjust_dynamic_symbol,
+ (PTR) info);
+
+ /* Add some entries to the .dynamic section. We fill in some of the
+ values later, in elf_bfd_final_link, but we must add the entries
+ now so that we know the final size of the .dynamic section. */
+ if (bfd_get_section_by_name (output_bfd, ".init") != NULL)
+ {
+ if (! elf_add_dynamic_entry (info, DT_INIT, 0))
+ return false;
+ }
+ if (bfd_get_section_by_name (output_bfd, ".fini") != NULL)
+ {
+ if (! elf_add_dynamic_entry (info, DT_FINI, 0))
+ return false;
+ }
+ if (! elf_add_dynamic_entry (info, DT_HASH, 0)
+ || ! elf_add_dynamic_entry (info, DT_STRTAB, 0)
+ || ! elf_add_dynamic_entry (info, DT_SYMTAB, 0)
+ || ! elf_add_dynamic_entry (info, DT_STRSZ,
+ elf_hash_table (info)->dynstr->length)
+ || ! elf_add_dynamic_entry (info, DT_SYMENT,
+ sizeof (Elf_External_Sym)))
+ return false;
+
+ /* The backend must work out the sizes of all the other dynamic
+ sections. */
+ bed = get_elf_backend_data (output_bfd);
+ if (! (*bed->elf_backend_size_dynamic_sections) (output_bfd, info))
+ return false;
+
+ return elf_add_dynamic_entry (info, DT_NULL, 0);
+}
+
+/* Make the backend pick a good value for a dynamic symbol. This is
+ called via elf_link_hash_traverse, and also calls itself
+ recursively. */
+
+static boolean
+elf_adjust_dynamic_symbol (h, data)
+ struct elf_link_hash_entry *h;
+ PTR data;
+{
+ struct bfd_link_info *info = (struct bfd_link_info *) data;
+ bfd *dynobj;
+ struct elf_backend_data *bed;
+
+ /* If this symbol is not defined by a dynamic object, or is not
+ referenced by a regular object, ignore it. FIXME: Do we need to
+ worry about symbols which are defined by one dynamic object and
+ referenced by another one? */
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
+ return true;
+
+ /* If we've already adjusted this symbol, don't do it again. This
+ can happen via a recursive call. */
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
+ return true;
+
+ /* Don't look at this symbol again. Note that we must set this
+ after checking the above conditions, because we may look at a
+ symbol once, decide not to do anything, and then get called
+ recursively later after REF_REGULAR is set below. */
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DYNAMIC_ADJUSTED;
+
+ /* If this is a weak definition, and we know a real definition, and
+ the real symbol is not itself defined by a regular object file,
+ then get a good value for the real definition. We handle the
+ real symbol first, for the convenience of the backend routine.
+
+ Note that there is a confusing case here. If the real definition
+ is defined by a regular object file, we don't get the real symbol
+ from the dynamic object, but we do get the weak symbol. If the
+ processor backend uses a COPY reloc, then if some routine in the
+ dynamic object changes the real symbol, we will not see that
+ change in the corresponding weak symbol. This is the way other
+ ELF linkers work as well, and seems to be a result of the shared
+ library model.
+
+ I will clarify this issue. Most SVR4 shared libraries define the
+ variable _timezone and define timezone as a weak synonym. The
+ tzset call changes _timezone. If you write
+ extern int timezone;
+ int _timezone = 5;
+ int main () { tzset (); printf ("%d %d\n", timezone, _timezone); }
+ you might expect that, since timezone is a synonym for _timezone,
+ the same number will print both times. However, if the processor
+ backend uses a COPY reloc, then actually timezone will be copied
+ into your process image, and, since you define _timezone
+ yourself, _timezone will not. Thus timezone and _timezone will
+ wind up at different memory locations. The tzset call will set
+ _timezone, leaving timezone unchanged. */
+
+ if (h->weakdef != NULL)
+ {
+ struct elf_link_hash_entry *weakdef;
+
+ BFD_ASSERT (h->root.type == bfd_link_hash_defined);
+ weakdef = h->weakdef;
+ BFD_ASSERT (weakdef->root.type == bfd_link_hash_defined);
+ BFD_ASSERT (weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC);
+ if ((weakdef->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
+ || (weakdef->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
+ {
+ /* This symbol is defined or referenced by a regular object
+ file, so we will not do anything special. Clear weakdef
+ for the convenience of the processor backend. */
+ h->weakdef = NULL;
+ }
+ else
+ {
+ /* There is an implicit reference by a regular object file
+ via the weak symbol. */
+ weakdef->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
+ if (! elf_adjust_dynamic_symbol (weakdef, (PTR) info))
+ return false;
+ }
+ }
+
+ dynobj = elf_hash_table (info)->dynobj;
+ bed = get_elf_backend_data (dynobj);
+ if (! (*bed->elf_backend_adjust_dynamic_symbol) (info, h))
+ {
+ /* FIXME: No way to return error. */
+ abort ();
+ }
+
+ return true;
+}
+
+/* Final phase of ELF linker. */
+
+/* A structure we use to avoid passing large numbers of arguments. */
+
+struct elf_final_link_info
+{
+ /* General link information. */
+ struct bfd_link_info *info;
+ /* Output BFD. */
+ bfd *output_bfd;
+ /* Symbol string table. */
+ struct strtab *symstrtab;
+ /* .dynsym section. */
+ asection *dynsym_sec;
+ /* .hash section. */
+ asection *hash_sec;
+ /* Buffer large enough to hold contents of any section. */
+ bfd_byte *contents;
+ /* Buffer large enough to hold external relocs of any section. */
+ PTR external_relocs;
+ /* Buffer large enough to hold internal relocs of any section. */
+ Elf_Internal_Rela *internal_relocs;
+ /* Buffer large enough to hold external local symbols of any input
+ BFD. */
+ Elf_External_Sym *external_syms;
+ /* Buffer large enough to hold internal local symbols of any input
+ BFD. */
+ Elf_Internal_Sym *internal_syms;
+ /* Array large enough to hold a symbol index for each local symbol
+ of any input BFD. */
+ long *indices;
+ /* Array large enough to hold a section pointer for each local
+ symbol of any input BFD. */
+ asection **sections;
+ /* Buffer to hold swapped out symbols. */
+ Elf_External_Sym *symbuf;
+ /* Number of swapped out symbols in buffer. */
+ size_t symbuf_count;
+ /* Number of symbols which fit in symbuf. */
+ size_t symbuf_size;
+};
+
+static boolean elf_link_output_sym
+ PARAMS ((struct elf_final_link_info *, const char *,
+ Elf_Internal_Sym *, asection *));
+static boolean elf_link_flush_output_syms
+ PARAMS ((struct elf_final_link_info *));
+static boolean elf_link_output_extsym
+ PARAMS ((struct elf_link_hash_entry *, PTR));
+static boolean elf_link_input_bfd
+ PARAMS ((struct elf_final_link_info *, bfd *));
+static boolean elf_reloc_link_order
+ PARAMS ((bfd *, struct bfd_link_info *, asection *,
+ struct bfd_link_order *));
+
+/* Do the final step of an ELF link. */
+
+boolean
+elf_bfd_final_link (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ struct elf_final_link_info finfo;
+ register asection *o;
+ register struct bfd_link_order *p;
+ register bfd *sub;
+ size_t max_contents_size;
+ size_t max_external_reloc_size;
+ size_t max_internal_reloc_count;
+ size_t max_sym_count;
+ file_ptr off;
+ Elf_Internal_Sym elfsym;
+ unsigned int i;
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Shdr *symstrtab_hdr;
+ struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ if (info->shared)
+ {
+ fprintf (stderr,
+ "Generating ELF shared libraries is not yet supported\n");
+ bfd_set_error (bfd_error_invalid_operation);
+ return false;
+ }
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ finfo.info = info;
+ finfo.output_bfd = abfd;
+ finfo.symstrtab = bfd_new_strtab (abfd);
+ if (finfo.symstrtab == NULL)
+ return false;
+ if (dynobj == NULL)
+ {
+ finfo.dynsym_sec = NULL;
+ finfo.hash_sec = NULL;
+ }
+ else
+ {
+ finfo.dynsym_sec = bfd_get_section_by_name (dynobj, ".dynsym");
+ finfo.hash_sec = bfd_get_section_by_name (dynobj, ".hash");
+ if (finfo.dynsym_sec == NULL
+ || finfo.hash_sec == NULL)
+ abort ();
+ }
+ finfo.contents = NULL;
+ finfo.external_relocs = NULL;
+ finfo.internal_relocs = NULL;
+ finfo.external_syms = NULL;
+ finfo.internal_syms = NULL;
+ finfo.indices = NULL;
+ finfo.sections = NULL;
+ finfo.symbuf = NULL;
+ finfo.symbuf_count = 0;
+
+ /* Count up the number of relocations we will output for each output
+ section, so that we know the sizes of the reloc sections. We
+ also figure out some maximum sizes. */
+ max_contents_size = 0;
+ max_external_reloc_size = 0;
+ max_internal_reloc_count = 0;
+ max_sym_count = 0;
+ for (o = abfd->sections; o != (asection *) NULL; o = o->next)
+ {
+ o->reloc_count = 0;
+
+ for (p = o->link_order_head; p != NULL; p = p->next)
+ {
+ if (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order)
+ ++o->reloc_count;
+ else if (p->type == bfd_indirect_link_order)
+ {
+ asection *sec;
+
+ sec = p->u.indirect.section;
+
+ if (info->relocateable)
+ o->reloc_count += sec->reloc_count;
+
+ if (sec->_raw_size > max_contents_size)
+ max_contents_size = sec->_raw_size;
+ if (sec->_cooked_size > max_contents_size)
+ max_contents_size = sec->_cooked_size;
+
+ /* We are interested in just local symbols, not all
+ symbols. */
+ if (bfd_get_flavour (sec->owner) == bfd_target_elf_flavour)
+ {
+ size_t sym_count;
+
+ if (elf_bad_symtab (sec->owner))
+ sym_count = (elf_tdata (sec->owner)->symtab_hdr.sh_size
+ / sizeof (Elf_External_Sym));
+ else
+ sym_count = elf_tdata (sec->owner)->symtab_hdr.sh_info;
+
+ if (sym_count > max_sym_count)
+ max_sym_count = sym_count;
+
+ if ((sec->flags & SEC_RELOC) != 0)
+ {
+ size_t ext_size;
+
+ ext_size = elf_section_data (sec)->rel_hdr.sh_size;
+ if (ext_size > max_external_reloc_size)
+ max_external_reloc_size = ext_size;
+ if (sec->reloc_count > max_internal_reloc_count)
+ max_internal_reloc_count = sec->reloc_count;
+ }
+ }
+ }
+ }
+
+ if (o->reloc_count > 0)
+ o->flags |= SEC_RELOC;
+ else
+ {
+ /* Explicitly clear the SEC_RELOC flag. The linker tends to
+ set it (this is probably a bug) and if it is set
+ assign_section_numbers will create a reloc section. */
+ o->flags &=~ SEC_RELOC;
+ }
+ }
+
+ /* Figure out the file positions for everything but the symbol table
+ and the relocs. We set symcount to force assign_section_numbers
+ to create a symbol table. */
+ abfd->symcount = info->strip == strip_all ? 0 : 1;
+ BFD_ASSERT (! abfd->output_has_begun);
+ if (! elf_compute_section_file_positions (abfd, info))
+ goto error_return;
+
+ /* That created the reloc sections. Set their sizes, and assign
+ them file positions, and allocate some buffers. */
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_RELOC) != 0)
+ {
+ Elf_Internal_Shdr *rel_hdr;
+ register struct elf_link_hash_entry **p, **pend;
+
+ rel_hdr = &elf_section_data (o)->rel_hdr;
+
+ rel_hdr->sh_size = rel_hdr->sh_entsize * o->reloc_count;
+
+ /* The contents field must last into write_object_contents,
+ so we allocate it with bfd_alloc rather than malloc. */
+ rel_hdr->contents = (PTR) bfd_alloc (abfd, rel_hdr->sh_size);
+ if (rel_hdr->contents == NULL && rel_hdr->sh_size != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ p = ((struct elf_link_hash_entry **)
+ malloc (o->reloc_count
+ * sizeof (struct elf_link_hash_entry *)));
+ if (p == NULL && o->reloc_count != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ elf_section_data (o)->rel_hashes = p;
+ pend = p + o->reloc_count;
+ for (; p < pend; p++)
+ *p = NULL;
+
+ /* Use the reloc_count field as an index when outputting the
+ relocs. */
+ o->reloc_count = 0;
+ }
+ }
+
+ assign_file_positions_for_relocs (abfd);
+
+ /* We have now assigned file positions for all the sections except
+ .symtab and .strtab. We start the .symtab section at the current
+ file position, and write directly to it. We build the .strtab
+ section in memory. When we add .dynsym support, we will build
+ that in memory as well (.dynsym is smaller than .symtab). */
+ abfd->symcount = 0;
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ /* sh_name is set in prep_headers. */
+ symtab_hdr->sh_type = SHT_SYMTAB;
+ symtab_hdr->sh_flags = 0;
+ symtab_hdr->sh_addr = 0;
+ symtab_hdr->sh_size = 0;
+ symtab_hdr->sh_entsize = sizeof (Elf_External_Sym);
+ /* sh_link is set in assign_section_numbers. */
+ /* sh_info is set below. */
+ /* sh_offset is set just below. */
+ symtab_hdr->sh_addralign = 4; /* FIXME: system dependent? */
+
+ off = elf_tdata (abfd)->next_file_pos;
+ off = assign_file_position_for_section (symtab_hdr, off, true);
+
+ /* Note that at this point elf_tdata (abfd)->next_file_pos is
+ incorrect. We do not yet know the size of the .symtab section.
+ We correct next_file_pos below, after we do know the size. */
+
+ /* Allocate a buffer to hold swapped out symbols. This is to avoid
+ continuously seeking to the right position in the file. */
+ if (! info->keep_memory || max_sym_count < 20)
+ finfo.symbuf_size = 20;
+ else
+ finfo.symbuf_size = max_sym_count;
+ finfo.symbuf = ((Elf_External_Sym *)
+ malloc (finfo.symbuf_size * sizeof (Elf_External_Sym)));
+ if (finfo.symbuf == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ /* Start writing out the symbol table. The first symbol is always a
+ dummy symbol. */
+ elfsym.st_value = 0;
+ elfsym.st_size = 0;
+ elfsym.st_info = 0;
+ elfsym.st_other = 0;
+ elfsym.st_shndx = SHN_UNDEF;
+ if (! elf_link_output_sym (&finfo, (const char *) NULL,
+ &elfsym, bfd_und_section_ptr))
+ goto error_return;
+
+#if 0
+ /* Some standard ELF linkers do this, but we don't because it causes
+ bootstrap comparison failures. */
+ /* Output a file symbol for the output file as the second symbol.
+ We output this even if we are discarding local symbols, although
+ I'm not sure if this is correct. */
+ elfsym.st_value = 0;
+ elfsym.st_size = 0;
+ elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
+ elfsym.st_other = 0;
+ elfsym.st_shndx = SHN_ABS;
+ if (! elf_link_output_sym (&finfo, bfd_get_filename (abfd),
+ &elfsym, bfd_abs_section_ptr))
+ goto error_return;
+#endif
+
+ /* Output a symbol for each section. We output these even if we are
+ discarding local symbols, since they are used for relocs. These
+ symbols have no names. We store the index of each one in the
+ index field of the section, so that we can find it again when
+ outputting relocs. */
+ elfsym.st_value = 0;
+ elfsym.st_size = 0;
+ elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
+ elfsym.st_other = 0;
+ for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
+ {
+ o = section_from_elf_index (abfd, i);
+ if (! bfd_is_abs_section (o))
+ o->target_index = abfd->symcount;
+ elfsym.st_shndx = i;
+ if (! elf_link_output_sym (&finfo, (const char *) NULL,
+ &elfsym, o))
+ goto error_return;
+ }
+
+ /* Allocate some memory to hold information read in from the input
+ files. */
+ finfo.contents = (bfd_byte *) malloc (max_contents_size);
+ finfo.external_relocs = (PTR) malloc (max_external_reloc_size);
+ finfo.internal_relocs = ((Elf_Internal_Rela *)
+ malloc (max_internal_reloc_count
+ * sizeof (Elf_Internal_Rela)));
+ finfo.external_syms = ((Elf_External_Sym *)
+ malloc (max_sym_count * sizeof (Elf_External_Sym)));
+ finfo.internal_syms = ((Elf_Internal_Sym *)
+ malloc (max_sym_count * sizeof (Elf_Internal_Sym)));
+ finfo.indices = (long *) malloc (max_sym_count * sizeof (long));
+ finfo.sections = (asection **) malloc (max_sym_count * sizeof (asection *));
+ if ((finfo.contents == NULL && max_contents_size != 0)
+ || (finfo.external_relocs == NULL && max_external_reloc_size != 0)
+ || (finfo.internal_relocs == NULL && max_internal_reloc_count != 0)
+ || (finfo.external_syms == NULL && max_sym_count != 0)
+ || (finfo.internal_syms == NULL && max_sym_count != 0)
+ || (finfo.indices == NULL && max_sym_count != 0)
+ || (finfo.sections == NULL && max_sym_count != 0))
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ /* Since ELF permits relocations to be against local symbols, we
+ must have the local symbols available when we do the relocations.
+ Since we would rather only read the local symbols once, and we
+ would rather not keep them in memory, we handle all the
+ relocations for a single input file at the same time.
+
+ Unfortunately, there is no way to know the total number of local
+ symbols until we have seen all of them, and the local symbol
+ indices precede the global symbol indices. This means that when
+ we are generating relocateable output, and we see a reloc against
+ a global symbol, we can not know the symbol index until we have
+ finished examining all the local symbols to see which ones we are
+ going to output. To deal with this, we keep the relocations in
+ memory, and don't output them until the end of the link. This is
+ an unfortunate waste of memory, but I don't see a good way around
+ it. Fortunately, it only happens when performing a relocateable
+ link, which is not the common case. FIXME: If keep_memory is set
+ we could write the relocs out and then read them again; I don't
+ know how bad the memory loss will be. */
+
+ for (sub = info->input_bfds; sub != NULL; sub = sub->next)
+ sub->output_has_begun = false;
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ for (p = o->link_order_head; p != NULL; p = p->next)
+ {
+ if (p->type == bfd_indirect_link_order
+ && (bfd_get_flavour (p->u.indirect.section->owner)
+ == bfd_target_elf_flavour))
+ {
+ sub = p->u.indirect.section->owner;
+ if (! sub->output_has_begun)
+ {
+ if (! elf_link_input_bfd (&finfo, sub))
+ goto error_return;
+ sub->output_has_begun = true;
+ }
+ }
+ else if (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order)
+ {
+ if (! elf_reloc_link_order (abfd, info, o, p))
+ goto error_return;
+ }
+ else
+ {
+ if (! _bfd_default_link_order (abfd, info, o, p))
+ goto error_return;
+ }
+ }
+ }
+
+ /* That wrote out all the local symbols. Finish up the symbol table
+ with the global symbols. */
+
+ /* The sh_info field records the index of the first non local
+ symbol. */
+ symtab_hdr->sh_info = abfd->symcount;
+ if (dynobj != NULL)
+ elf_section_data (finfo.dynsym_sec->output_section)->this_hdr.sh_info = 1;
+
+ /* We get the global symbols from the hash table. */
+ elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,
+ (PTR) &finfo);
+
+ /* Flush all symbols to the file. */
+ if (! elf_link_flush_output_syms (&finfo))
+ return false;
+
+ /* Now we know the size of the symtab section. */
+ off += symtab_hdr->sh_size;
+
+ /* Finish up the symbol string table (.strtab) section. */
+ symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
+ /* sh_name was set in prep_headers. */
+ symstrtab_hdr->sh_type = SHT_STRTAB;
+ symstrtab_hdr->sh_flags = 0;
+ symstrtab_hdr->sh_addr = 0;
+ symstrtab_hdr->sh_size = finfo.symstrtab->length;
+ symstrtab_hdr->sh_entsize = 0;
+ symstrtab_hdr->sh_link = 0;
+ symstrtab_hdr->sh_info = 0;
+ /* sh_offset is set just below. */
+ symstrtab_hdr->sh_addralign = 1;
+ symstrtab_hdr->contents = (PTR) finfo.symstrtab->tab;
+
+ off = assign_file_position_for_section (symstrtab_hdr, off, true);
+ elf_tdata (abfd)->next_file_pos = off;
+
+ /* Adjust the relocs to have the correct symbol indices. */
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ struct elf_link_hash_entry **rel_hash;
+ Elf_Internal_Shdr *rel_hdr;
+
+ if ((o->flags & SEC_RELOC) == 0)
+ continue;
+
+ rel_hash = elf_section_data (o)->rel_hashes;
+ rel_hdr = &elf_section_data (o)->rel_hdr;
+ for (i = 0; i < o->reloc_count; i++, rel_hash++)
+ {
+ if (*rel_hash == NULL)
+ continue;
+
+ BFD_ASSERT ((*rel_hash)->indx >= 0);
+
+ if (rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
+ {
+ Elf_External_Rel *erel;
+ Elf_Internal_Rel irel;
+
+ erel = (Elf_External_Rel *) rel_hdr->contents + i;
+ elf_swap_reloc_in (abfd, erel, &irel);
+ irel.r_info = ELF_R_INFO ((*rel_hash)->indx,
+ ELF_R_TYPE (irel.r_info));
+ elf_swap_reloc_out (abfd, &irel, erel);
+ }
+ else
+ {
+ Elf_External_Rela *erela;
+ Elf_Internal_Rela irela;
+
+ BFD_ASSERT (rel_hdr->sh_entsize
+ == sizeof (Elf_External_Rela));
+
+ erela = (Elf_External_Rela *) rel_hdr->contents + i;
+ elf_swap_reloca_in (abfd, erela, &irela);
+ irela.r_info = ELF_R_INFO ((*rel_hash)->indx,
+ ELF_R_TYPE (irela.r_info));
+ elf_swap_reloca_out (abfd, &irela, erela);
+ }
+ }
+
+ /* Set the reloc_count field to 0 to prevent write_relocs from
+ trying to swap the relocs out itself. */
+ o->reloc_count = 0;
+ }
+
+ /* If we are linking against a dynamic object, finish up the dynamic
+ linking information. */
+ if (dynobj != NULL)
+ {
+ Elf_External_Dyn *dyncon, *dynconend;
+
+ /* Fix up .dynamic entries. */
+ o = bfd_get_section_by_name (dynobj, ".dynamic");
+ BFD_ASSERT (o != NULL);
+
+ dyncon = (Elf_External_Dyn *) o->contents;
+ dynconend = (Elf_External_Dyn *) (o->contents + o->_raw_size);
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn dyn;
+ const char *name;
+ unsigned int type;
+
+ elf_swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
+ {
+ default:
+ break;
+
+ case DT_INIT:
+ name = ".init";
+ goto get_vma;
+ case DT_FINI:
+ name = ".fini";
+ goto get_vma;
+ case DT_HASH:
+ name = ".hash";
+ goto get_vma;
+ case DT_STRTAB:
+ name = ".dynstr";
+ goto get_vma;
+ case DT_SYMTAB:
+ name = ".dynsym";
+ get_vma:
+ o = bfd_get_section_by_name (abfd, name);
+ BFD_ASSERT (o != NULL);
+ dyn.d_un.d_ptr = o->vma;
+ elf_swap_dyn_out (dynobj, &dyn, dyncon);
+ break;
+
+ case DT_REL:
+ case DT_RELA:
+ case DT_RELSZ:
+ case DT_RELASZ:
+ if (dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
+ type = SHT_REL;
+ else
+ type = SHT_RELA;
+ dyn.d_un.d_val = 0;
+ for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
+ {
+ Elf_Internal_Shdr *hdr;
+
+ hdr = elf_elfsections (abfd)[i];
+ if (hdr->sh_type == type
+ && (hdr->sh_flags & SHF_ALLOC) != 0)
+ {
+ if (dyn.d_tag == DT_RELSZ || dyn.d_tag == DT_RELASZ)
+ dyn.d_un.d_val += hdr->sh_size;
+ else
+ {
+ if (dyn.d_un.d_val == 0
+ || hdr->sh_addr < dyn.d_un.d_val)
+ dyn.d_un.d_val = hdr->sh_addr;
+ }
+ }
+ }
+ elf_swap_dyn_out (dynobj, &dyn, dyncon);
+ break;
+ }
+ }
+
+ if (! (*bed->elf_backend_finish_dynamic_sections) (abfd, info))
+ goto error_return;
+
+ for (o = dynobj->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
+ if ((o->flags & SEC_IN_MEMORY) == 0)
+ {
+ BFD_ASSERT (info->shared);
+ continue;
+ }
+ if (! bfd_set_section_contents (abfd, o->output_section,
+ o->contents, o->output_offset,
+ o->_raw_size))
+ goto error_return;
+ }
+ }
+
+ /* Now backend stuff. */
+ if (bed->elf_backend_final_write_processing)
+ (*bed->elf_backend_final_write_processing) (abfd, NULL);
+
+ if (finfo.contents != NULL)
+ free (finfo.contents);
+ if (finfo.external_relocs != NULL)
+ free (finfo.external_relocs);
+ if (finfo.internal_relocs != NULL)
+ free (finfo.internal_relocs);
+ if (finfo.external_syms != NULL)
+ free (finfo.external_syms);
+ if (finfo.internal_syms != NULL)
+ free (finfo.internal_syms);
+ if (finfo.indices != NULL)
+ free (finfo.indices);
+ if (finfo.sections != NULL)
+ free (finfo.sections);
+ if (finfo.symbuf != NULL)
+ free (finfo.symbuf);
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_RELOC) != 0
+ && elf_section_data (o)->rel_hashes != NULL)
+ free (elf_section_data (o)->rel_hashes);
+ }
+
+ return true;
+
+ error_return:
+ if (finfo.contents != NULL)
+ free (finfo.contents);
+ if (finfo.external_relocs != NULL)
+ free (finfo.external_relocs);
+ if (finfo.internal_relocs != NULL)
+ free (finfo.internal_relocs);
+ if (finfo.external_syms != NULL)
+ free (finfo.external_syms);
+ if (finfo.internal_syms != NULL)
+ free (finfo.internal_syms);
+ if (finfo.indices != NULL)
+ free (finfo.indices);
+ if (finfo.sections != NULL)
+ free (finfo.sections);
+ if (finfo.symbuf != NULL)
+ free (finfo.symbuf);
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_RELOC) != 0
+ && elf_section_data (o)->rel_hashes != NULL)
+ free (elf_section_data (o)->rel_hashes);
+ }
+
+ return false;
+}
+
+/* Add a symbol to the output symbol table. */
+
+static boolean
+elf_link_output_sym (finfo, name, elfsym, input_sec)
+ struct elf_final_link_info *finfo;
+ const char *name;
+ Elf_Internal_Sym *elfsym;
+ asection *input_sec;
+{
+ boolean (*output_symbol_hook) PARAMS ((bfd *,
+ struct bfd_link_info *info,
+ const char *,
+ Elf_Internal_Sym *,
+ asection *));
+
+ output_symbol_hook = get_elf_backend_data (finfo->output_bfd)->
+ elf_backend_link_output_symbol_hook;
+ if (output_symbol_hook != NULL)
+ {
+ if (! ((*output_symbol_hook)
+ (finfo->output_bfd, finfo->info, name, elfsym, input_sec)))
+ return false;
+ }
+
+ if (name == (const char *) NULL || *name == '\0')
+ elfsym->st_name = 0;
+ else
+ {
+ elfsym->st_name = bfd_add_to_strtab (finfo->output_bfd,
+ finfo->symstrtab, name);
+ if (elfsym->st_name == (unsigned long) -1)
+ return false;
+ }
+
+ if (finfo->symbuf_count >= finfo->symbuf_size)
+ {
+ if (! elf_link_flush_output_syms (finfo))
+ return false;
+ }
+
+ elf_swap_symbol_out (finfo->output_bfd, elfsym,
+ finfo->symbuf + finfo->symbuf_count);
+ ++finfo->symbuf_count;
+
+ ++finfo->output_bfd->symcount;
+
+ return true;
+}
+
+/* Flush the output symbols to the file. */
+
+static boolean
+elf_link_flush_output_syms (finfo)
+ struct elf_final_link_info *finfo;
+{
+ Elf_Internal_Shdr *symtab;
+
+ symtab = &elf_tdata (finfo->output_bfd)->symtab_hdr;
+
+ if (bfd_seek (finfo->output_bfd, symtab->sh_offset + symtab->sh_size,
+ SEEK_SET) != 0
+ || (bfd_write ((PTR) finfo->symbuf, finfo->symbuf_count,
+ sizeof (Elf_External_Sym), finfo->output_bfd)
+ != finfo->symbuf_count * sizeof (Elf_External_Sym)))
+ return false;
+
+ symtab->sh_size += finfo->symbuf_count * sizeof (Elf_External_Sym);
+
+ finfo->symbuf_count = 0;
+
+ return true;
+}
+
+/* Add an external symbol to the symbol table. This is called from
+ the hash table traversal routine. */
+
+static boolean
+elf_link_output_extsym (h, data)
+ struct elf_link_hash_entry *h;
+ PTR data;
+{
+ struct elf_final_link_info *finfo = (struct elf_final_link_info *) data;
+ boolean strip;
+ Elf_Internal_Sym sym;
+ asection *input_sec;
+
+ /* We don't want to output symbols that have never been mentioned by
+ a regular file, or that we have been told to strip. However, if
+ h->indx is set to -2, the symbol is used by a reloc and we must
+ output it. */
+ if (h->indx == -2)
+ strip = false;
+ else if (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
+ strip = true;
+ else if (finfo->info->strip == strip_all
+ || (finfo->info->strip == strip_some
+ && bfd_hash_lookup (finfo->info->keep_hash,
+ h->root.root.string,
+ false, false) == NULL))
+ strip = true;
+ else
+ strip = false;
+
+ /* If we're stripping it, and it's not a dynamic symbol, there's
+ nothing else to do. */
+ if (strip && h->dynindx == -1)
+ return true;
+
+ sym.st_value = 0;
+ sym.st_size = h->size;
+ sym.st_other = 0;
+ if (h->root.type == bfd_link_hash_weak
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_DEFINED_WEAK) != 0)
+ sym.st_info = ELF_ST_INFO (STB_WEAK, h->type);
+ else
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, h->type);
+
+ switch (h->root.type)
+ {
+ default:
+ case bfd_link_hash_new:
+ abort ();
+ return false;
+
+ case bfd_link_hash_undefined:
+ input_sec = bfd_und_section_ptr;
+ sym.st_shndx = SHN_UNDEF;
+ break;
+
+ case bfd_link_hash_weak:
+ input_sec = bfd_und_section_ptr;
+ sym.st_shndx = SHN_UNDEF;
+ break;
+
+ case bfd_link_hash_defined:
+ {
+
+ input_sec = h->root.u.def.section;
+ if (input_sec->output_section != NULL)
+ {
+ sym.st_shndx = elf_section_from_bfd_section (finfo->output_bfd,
+ input_sec->output_section);
+ if (sym.st_shndx == (unsigned short) -1)
+ {
+ /* FIXME: No way to handle errors. */
+ abort ();
+ }
+
+ /* ELF symbols in relocateable files are section relative,
+ but in nonrelocateable files they are virtual
+ addresses. */
+ sym.st_value = h->root.u.def.value + input_sec->output_offset;
+ if (! finfo->info->relocateable)
+ sym.st_value += input_sec->output_section->vma;
+ }
+ else
+ {
+ BFD_ASSERT (bfd_get_flavour (input_sec->owner)
+ == bfd_target_elf_flavour
+ && elf_elfheader (input_sec->owner)->e_type == ET_DYN);
+ sym.st_shndx = SHN_UNDEF;
+ input_sec = bfd_und_section_ptr;
+ }
+ }
+ break;
+
+ case bfd_link_hash_common:
+ input_sec = bfd_com_section_ptr;
+ sym.st_shndx = SHN_COMMON;
+ if (h->align == 0)
+ sym.st_value = 1;
+ else
+ sym.st_value = h->align;
+ break;
+
+ case bfd_link_hash_indirect:
+ case bfd_link_hash_warning:
+ /* I have no idea how these should be handled. */
+ return true;
+ }
+
+ /* If this symbol should be put in the .dynsym section, then put it
+ there now. We have already know the symbol index. We also fill
+ in the entry in the .hash section. */
+ if (h->dynindx != -1)
+ {
+ struct elf_backend_data *bed;
+ size_t bucketcount;
+ size_t bucket;
+ bfd_byte *bucketpos;
+ bfd_vma chain;
+
+ sym.st_name = h->dynstr_index;
+
+ /* Give the processor backend a chance to tweak the symbol
+ value, and also to finish up anything that needs to be done
+ for this symbol. */
+ bed = get_elf_backend_data (finfo->output_bfd);
+ if (! ((*bed->elf_backend_finish_dynamic_symbol)
+ (finfo->output_bfd, finfo->info, h, &sym)))
+ {
+ /* FIXME: No way to return error. */
+ abort ();
+ }
+
+ elf_swap_symbol_out (finfo->output_bfd, &sym,
+ ((Elf_External_Sym *) finfo->dynsym_sec->contents
+ + h->dynindx));
+
+ bucketcount = elf_hash_table (finfo->info)->bucketcount;
+ bucket = bfd_elf_hash (h->root.root.string) % bucketcount;
+ bucketpos = ((bfd_byte *) finfo->hash_sec->contents
+ + (bucket + 2) * (ARCH_SIZE / 8));
+ chain = get_word (finfo->output_bfd, bucketpos);
+ put_word (finfo->output_bfd, h->dynindx, bucketpos);
+ put_word (finfo->output_bfd, chain,
+ ((bfd_byte *) finfo->hash_sec->contents
+ + (bucketcount + 2 + h->dynindx) * (ARCH_SIZE / 8)));
+ }
+
+ /* If we're stripping it, then it was just a dynamic symbol, and
+ there's nothing else to do. */
+ if (strip)
+ return true;
+
+ h->indx = finfo->output_bfd->symcount;
+
+ if (! elf_link_output_sym (finfo, h->root.root.string, &sym, input_sec))
+ {
+ /* FIXME: No way to return error. */
+ abort ();
+ }
+
+ return true;
+}
+
+/* Link an input file into the linker output file. This function
+ handles all the sections and relocations of the input file at once.
+ This is so that we only have to read the local symbols once, and
+ don't have to keep them in memory. */
+
+static boolean
+elf_link_input_bfd (finfo, input_bfd)
+ struct elf_final_link_info *finfo;
+ bfd *input_bfd;
+{
+ boolean (*relocate_section) PARAMS ((bfd *, struct bfd_link_info *,
+ bfd *, asection *, bfd_byte *,
+ Elf_Internal_Rela *,
+ Elf_Internal_Sym *,
+ asection **, char *));
+ bfd *output_bfd;
+ Elf_Internal_Shdr *symtab_hdr;
+ size_t locsymcount;
+ size_t extsymoff;
+ Elf_External_Sym *esym;
+ Elf_External_Sym *esymend;
+ Elf_Internal_Sym *isym;
+ long *pindex;
+ asection **ppsection;
+ asection *o;
+
+ output_bfd = finfo->output_bfd;
+ relocate_section =
+ get_elf_backend_data (output_bfd)->elf_backend_relocate_section;
+
+ /* If this is a dynamic object, we don't want to do anything here:
+ we don't want the local symbols, and we don't want the section
+ contents. */
+ if (elf_elfheader (input_bfd)->e_type == ET_DYN)
+ return true;
+
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ if (elf_bad_symtab (input_bfd))
+ {
+ locsymcount = symtab_hdr->sh_size / sizeof (Elf_External_Sym);
+ extsymoff = 0;
+ }
+ else
+ {
+ locsymcount = symtab_hdr->sh_info;
+ extsymoff = symtab_hdr->sh_info;
+ }
+
+ /* Read the local symbols. */
+ if (locsymcount > 0
+ && (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
+ || (bfd_read (finfo->external_syms, sizeof (Elf_External_Sym),
+ locsymcount, input_bfd)
+ != locsymcount * sizeof (Elf_External_Sym))))
+ return false;
+
+ /* Swap in the local symbols and write out the ones which we know
+ are going into the output file. */
+ esym = finfo->external_syms;
+ esymend = esym + locsymcount;
+ isym = finfo->internal_syms;
+ pindex = finfo->indices;
+ ppsection = finfo->sections;
+ for (; esym < esymend; esym++, isym++, pindex++, ppsection++)
+ {
+ asection *isec;
+ const char *name;
+ bfd_vma oldval;
+
+ elf_swap_symbol_in (input_bfd, esym, isym);
+ *pindex = -1;
+
+ if (elf_bad_symtab (input_bfd))
+ {
+ if (ELF_ST_BIND (isym->st_info) != STB_LOCAL)
+ {
+ *ppsection = NULL;
+ continue;
+ }
+ }
+
+ if (isym->st_shndx == SHN_UNDEF)
+ isec = bfd_und_section_ptr;
+ else if (isym->st_shndx > 0 && isym->st_shndx < SHN_LORESERVE)
+ {
+ isec = section_from_elf_index (input_bfd, isym->st_shndx);
+ if (isec == NULL)
+ return false;
+ }
+ else if (isym->st_shndx == SHN_ABS)
+ isec = bfd_abs_section_ptr;
+ else if (isym->st_shndx == SHN_COMMON)
+ isec = bfd_com_section_ptr;
+ else
+ {
+ /* Who knows? */
+ isec = NULL;
+ }
+
+ *ppsection = isec;
+
+ /* Don't output the first, undefined, symbol. */
+ if (esym == finfo->external_syms)
+ continue;
+
+ /* If we are stripping all symbols, we don't want to output this
+ one. */
+ if (finfo->info->strip == strip_all)
+ continue;
+
+ /* We never output section symbols. Instead, we use the section
+ symbol of the corresponding section in the output file. */
+ if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
+ continue;
+
+ /* If we are discarding all local symbols, we don't want to
+ output this one. If we are generating a relocateable output
+ file, then some of the local symbols may be required by
+ relocs; we output them below as we discover that they are
+ needed. */
+ if (finfo->info->discard == discard_all)
+ continue;
+
+ /* Get the name of the symbol. */
+ name = elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link,
+ isym->st_name);
+ if (name == NULL)
+ return false;
+
+ /* See if we are discarding symbols with this name. */
+ if ((finfo->info->strip == strip_some
+ && (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
+ == NULL))
+ || (finfo->info->discard == discard_l
+ && strncmp (name, finfo->info->lprefix,
+ finfo->info->lprefix_len) == 0))
+ continue;
+
+ /* If we get here, we are going to output this symbol. */
+
+ /* Adjust the section index for the output file. */
+ isym->st_shndx = elf_section_from_bfd_section (output_bfd,
+ isec->output_section);
+ if (isym->st_shndx == (unsigned short) -1)
+ return false;
+
+ *pindex = output_bfd->symcount;
+
+ /* ELF symbols in relocateable files are section relative, but
+ in executable files they are virtual addresses. Note that
+ this code assumes that all ELF sections have an associated
+ BFD section with a reasonable value for output_offset; below
+ we assume that they also have a reasonable value for
+ output_section. Any special sections must be set up to meet
+ these requirements. */
+ oldval = isym->st_value;
+ isym->st_value += isec->output_offset;
+ if (! finfo->info->relocateable)
+ isym->st_value += isec->output_section->vma;
+
+ if (! elf_link_output_sym (finfo, name, isym, isec))
+ return false;
+
+ /* Restore the old value for reloc handling. */
+ isym->st_value = oldval;
+ }
+
+ /* Relocate the contents of each section. */
+ for (o = input_bfd->sections; o != NULL; o = o->next)
+ {
+ Elf_Internal_Shdr *input_rel_hdr;
+
+ if ((o->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
+
+ if ((o->flags & SEC_IN_MEMORY) != 0
+ && input_bfd == elf_hash_table (finfo->info)->dynobj)
+ {
+ /* Section was created by elf_link_create_dynamic_sections.
+ FIXME: This test is fragile. */
+ continue;
+ }
+
+ /* Read the contents of the section. */
+ if (! bfd_get_section_contents (input_bfd, o, finfo->contents,
+ (file_ptr) 0, o->_raw_size))
+ return false;
+
+ if ((o->flags & SEC_RELOC) != 0)
+ {
+ PTR external_relocs;
+
+ /* Get the external relocs. They may have been cached. */
+ external_relocs = elf_section_data (o)->relocs;
+ if (external_relocs == NULL)
+ {
+ input_rel_hdr = &elf_section_data (o)->rel_hdr;
+ if ((bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET)
+ != 0)
+ || (bfd_read (finfo->external_relocs, 1,
+ input_rel_hdr->sh_size, input_bfd)
+ != input_rel_hdr->sh_size))
+ return false;
+ external_relocs = finfo->external_relocs;
+ }
+
+ /* Swap in the relocs. For convenience, we always produce
+ an Elf_Internal_Rela array; if the relocs are Rel, we set
+ the addend to 0. */
+ if (input_rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
+ {
+ Elf_External_Rel *erel;
+ Elf_External_Rel *erelend;
+ Elf_Internal_Rela *irela;
+
+ erel = (Elf_External_Rel *) external_relocs;
+ erelend = erel + o->reloc_count;
+ irela = finfo->internal_relocs;
+ for (; erel < erelend; erel++, irela++)
+ {
+ Elf_Internal_Rel irel;
+
+ elf_swap_reloc_in (input_bfd, erel, &irel);
+ irela->r_offset = irel.r_offset;
+ irela->r_info = irel.r_info;
+ irela->r_addend = 0;
+ }
+ }
+ else
+ {
+ Elf_External_Rela *erela;
+ Elf_External_Rela *erelaend;
+ Elf_Internal_Rela *irela;
+
+ BFD_ASSERT (input_rel_hdr->sh_entsize
+ == sizeof (Elf_External_Rela));
+
+ erela = (Elf_External_Rela *) external_relocs;
+ erelaend = erela + o->reloc_count;
+ irela = finfo->internal_relocs;
+ for (; erela < erelaend; erela++, irela++)
+ elf_swap_reloca_in (input_bfd, erela, irela);
+ }
+
+ /* Relocate the section by invoking a back end routine.
+
+ The back end routine is responsible for adjusting the
+ section contents as necessary, and (if using Rela relocs
+ and generating a relocateable output file) adjusting the
+ reloc addend as necessary.
+
+ The back end routine does not have to worry about setting
+ the reloc address or the reloc symbol index.
+
+ The back end routine is given a pointer to the swapped in
+ internal symbols, and can access the hash table entries
+ for the external symbols via elf_sym_hashes (input_bfd).
+
+ When generating relocateable output, the back end routine
+ must handle STB_LOCAL/STT_SECTION symbols specially. The
+ output symbol is going to be a section symbol
+ corresponding to the output section, which will require
+ the addend to be adjusted. */
+
+ if (! (*relocate_section) (output_bfd, finfo->info,
+ input_bfd, o,
+ finfo->contents,
+ finfo->internal_relocs,
+ finfo->internal_syms,
+ finfo->sections,
+ finfo->symstrtab->tab))
+ return false;
+
+ if (finfo->info->relocateable)
+ {
+ Elf_Internal_Rela *irela;
+ Elf_Internal_Rela *irelaend;
+ struct elf_link_hash_entry **rel_hash;
+ Elf_Internal_Shdr *output_rel_hdr;
+
+ /* Adjust the reloc addresses and symbol indices. */
+
+ irela = finfo->internal_relocs;
+ irelaend = irela + o->reloc_count;
+ rel_hash = (elf_section_data (o->output_section)->rel_hashes
+ + o->output_section->reloc_count);
+ for (; irela < irelaend; irela++, rel_hash++)
+ {
+ long r_symndx;
+ Elf_Internal_Sym *isym;
+ asection *sec;
+
+ irela->r_offset += o->output_offset;
+
+ r_symndx = ELF_R_SYM (irela->r_info);
+
+ if (r_symndx == 0)
+ continue;
+
+ if (r_symndx >= locsymcount
+ || (elf_bad_symtab (input_bfd)
+ && finfo->sections[r_symndx] == NULL))
+ {
+ long indx;
+
+ /* This is a reloc against a global symbol. We
+ have not yet output all the local symbols, so
+ we do not know the symbol index of any global
+ symbol. We set the rel_hash entry for this
+ reloc to point to the global hash table entry
+ for this symbol. The symbol index is then
+ set at the end of elf_bfd_final_link. */
+ indx = r_symndx - extsymoff;
+ *rel_hash = elf_sym_hashes (input_bfd)[indx];
+
+ /* Setting the index to -2 tells
+ elf_link_output_extsym that this symbol is
+ used by a reloc. */
+ BFD_ASSERT ((*rel_hash)->indx < 0);
+ (*rel_hash)->indx = -2;
+
+ continue;
+ }
+
+ /* This is a reloc against a local symbol. */
+
+ *rel_hash = NULL;
+ isym = finfo->internal_syms + r_symndx;
+ sec = finfo->sections[r_symndx];
+ if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
+ {
+ /* I suppose the backend ought to fill in the
+ section of any STT_SECTION symbol against a
+ processor specific section. */
+ if (sec != NULL && bfd_is_abs_section (sec))
+ r_symndx = 0;
+ else if (sec == NULL || sec->owner == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ else
+ {
+ r_symndx = sec->output_section->target_index;
+ if (r_symndx == 0)
+ abort ();
+ }
+ }
+ else
+ {
+ if (finfo->indices[r_symndx] == -1)
+ {
+ unsigned long link;
+ const char *name;
+ asection *osec;
+
+ if (finfo->info->strip == strip_all)
+ {
+ /* You can't do ld -r -s. */
+ bfd_set_error (bfd_error_invalid_operation);
+ return false;
+ }
+
+ /* This symbol was skipped earlier, but
+ since it is needed by a reloc, we
+ must output it now. */
+ link = symtab_hdr->sh_link;
+ name = elf_string_from_elf_section (input_bfd,
+ link,
+ isym->st_name);
+ if (name == NULL)
+ return false;
+
+ osec = sec->output_section;
+ isym->st_shndx =
+ elf_section_from_bfd_section (output_bfd,
+ osec);
+ if (isym->st_shndx == (unsigned short) -1)
+ return false;
+
+ isym->st_value += sec->output_offset;
+ if (! finfo->info->relocateable)
+ isym->st_value += osec->vma;
+
+ finfo->indices[r_symndx] = output_bfd->symcount;
+
+ if (! elf_link_output_sym (finfo, name, isym, sec))
+ return false;
+ }
+
+ r_symndx = finfo->indices[r_symndx];
+ }
+
+ irela->r_info = ELF_R_INFO (r_symndx,
+ ELF_R_TYPE (irela->r_info));
+ }
+
+ /* Swap out the relocs. */
+ output_rel_hdr = &elf_section_data (o->output_section)->rel_hdr;
+ BFD_ASSERT (output_rel_hdr->sh_entsize
+ == input_rel_hdr->sh_entsize);
+ irela = finfo->internal_relocs;
+ irelaend = irela + o->reloc_count;
+ if (input_rel_hdr->sh_entsize == sizeof (Elf_External_Rel))
+ {
+ Elf_External_Rel *erel;
+
+ erel = ((Elf_External_Rel *) output_rel_hdr->contents
+ + o->output_section->reloc_count);
+ for (; irela < irelaend; irela++, erel++)
+ {
+ Elf_Internal_Rel irel;
+
+ irel.r_offset = irela->r_offset;
+ irel.r_info = irela->r_info;
+ BFD_ASSERT (irela->r_addend == 0);
+ elf_swap_reloc_out (output_bfd, &irel, erel);
+ }
+ }
+ else
+ {
+ Elf_External_Rela *erela;
+
+ BFD_ASSERT (input_rel_hdr->sh_entsize
+ == sizeof (Elf_External_Rela));
+ erela = ((Elf_External_Rela *) output_rel_hdr->contents
+ + o->output_section->reloc_count);
+ for (; irela < irelaend; irela++, erela++)
+ elf_swap_reloca_out (output_bfd, irela, erela);
+ }
+
+ o->output_section->reloc_count += o->reloc_count;
+ }
+ }
+
+ /* Write out the modified section contents. */
+ if (! bfd_set_section_contents (output_bfd, o->output_section,
+ finfo->contents, o->output_offset,
+ (o->_cooked_size != 0
+ ? o->_cooked_size
+ : o->_raw_size)))
+ return false;
+ }
+
+ return true;
+}
+
+/* Generate a reloc when linking an ELF file. This is a reloc
+ requested by the linker, and does come from any input file. This
+ is used to build constructor and destructor tables when linking
+ with -Ur. */
+
+static boolean
+elf_reloc_link_order (output_bfd, info, output_section, link_order)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ asection *output_section;
+ struct bfd_link_order *link_order;
+{
+ const reloc_howto_type *howto;
+ long indx;
+ bfd_vma offset;
+ struct elf_link_hash_entry **rel_hash_ptr;
+ Elf_Internal_Shdr *rel_hdr;
+
+ howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
+ if (howto == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ /* If this is an inplace reloc, we must write the addend into the
+ object file. */
+ if (howto->partial_inplace
+ && link_order->u.reloc.p->addend != 0)
+ {
+ bfd_size_type size;
+ bfd_reloc_status_type rstat;
+ bfd_byte *buf;
+ boolean ok;
+
+ size = bfd_get_reloc_size (howto);
+ buf = (bfd_byte *) bfd_zmalloc (size);
+ if (buf == (bfd_byte *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ rstat = _bfd_relocate_contents (howto, output_bfd,
+ link_order->u.reloc.p->addend, buf);
+ switch (rstat)
+ {
+ case bfd_reloc_ok:
+ break;
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+ case bfd_reloc_overflow:
+ if (! ((*info->callbacks->reloc_overflow)
+ (info,
+ (link_order->type == bfd_section_reloc_link_order
+ ? bfd_section_name (output_bfd,
+ link_order->u.reloc.p->u.section)
+ : link_order->u.reloc.p->u.name),
+ howto->name, link_order->u.reloc.p->addend,
+ (bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
+ {
+ free (buf);
+ return false;
+ }
+ break;
+ }
+ ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf,
+ (file_ptr) link_order->offset, size);
+ free (buf);
+ if (! ok)
+ return false;
+ }
+
+ /* Figure out the symbol index. */
+ rel_hash_ptr = (elf_section_data (output_section)->rel_hashes
+ + output_section->reloc_count);
+ if (link_order->type == bfd_section_reloc_link_order)
+ {
+ indx = link_order->u.reloc.p->u.section->target_index;
+ if (indx == 0)
+ abort ();
+ *rel_hash_ptr = NULL;
+ }
+ else
+ {
+ struct elf_link_hash_entry *h;
+
+ h = elf_link_hash_lookup (elf_hash_table (info),
+ link_order->u.reloc.p->u.name,
+ false, false, true);
+ if (h != NULL)
+ {
+ /* Setting the index to -2 tells elf_link_output_extsym that
+ this symbol is used by a reloc. */
+ h->indx = -2;
+ *rel_hash_ptr = h;
+ indx = 0;
+ }
+ else
+ {
+ if (! ((*info->callbacks->unattached_reloc)
+ (info, link_order->u.reloc.p->u.name, (bfd *) NULL,
+ (asection *) NULL, (bfd_vma) 0)))
+ return false;
+ indx = 0;
+ }
+ }
+
+ /* The address of a reloc is relative to the section in a
+ relocateable file, and is a virtual address in an executable
+ file. */
+ offset = link_order->offset;
+ if (! info->relocateable)
+ offset += output_section->vma;
+
+ rel_hdr = &elf_section_data (output_section)->rel_hdr;
+
+ if (rel_hdr->sh_type == SHT_REL)
+ {
+ Elf_Internal_Rel irel;
+ Elf_External_Rel *erel;
+
+ irel.r_offset = offset;
+ irel.r_info = ELF_R_INFO (indx, howto->type);
+ erel = ((Elf_External_Rel *) rel_hdr->contents
+ + output_section->reloc_count);
+ elf_swap_reloc_out (output_bfd, &irel, erel);
+ }
+ else
+ {
+ Elf_Internal_Rela irela;
+ Elf_External_Rela *erela;
+
+ irela.r_offset = offset;
+ irela.r_info = ELF_R_INFO (indx, howto->type);
+ irela.r_addend = link_order->u.reloc.p->addend;
+ erela = ((Elf_External_Rela *) rel_hdr->contents
+ + output_section->reloc_count);
+ elf_swap_reloca_out (output_bfd, &irela, erela);
+ }
+
+ ++output_section->reloc_count;
+
+ return true;
+}
diff --git a/gnu/usr.bin/gdb/bfd/genlink.h b/gnu/usr.bin/gdb/bfd/genlink.h
new file mode 100644
index 0000000000000..06f6bfc629c26
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/genlink.h
@@ -0,0 +1,106 @@
+/* genlink.h -- interface to the BFD generic linker
+ Copyright 1993, 1994 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Cygnus Support.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#ifndef GENLINK_H
+#define GENLINK_H
+
+/* This header file is internal to BFD. It describes the internal
+ structures and functions used by the BFD generic linker, in case
+ any of the more specific linkers want to use or call them. Note
+ that some functions, such as _bfd_generic_link_hash_table_create,
+ are declared in libbfd.h, because they are expected to be widely
+ used. The functions and structures in this file will probably only
+ be used by a few files besides linker.c itself. In fact, this file
+ is not particularly complete; I have only put in the interfaces I
+ actually needed. */
+
+/* The generic linker uses a hash table which is a derived class of
+ the standard linker hash table, just as the other backend specific
+ linkers do. Do not confuse the generic linker hash table with the
+ standard BFD linker hash table it is built upon. */
+
+/* Generic linker hash table entries. */
+
+struct generic_link_hash_entry
+{
+ struct bfd_link_hash_entry root;
+ /* Whether this symbol has been written out. */
+ boolean written;
+ /* Symbol from input BFD. */
+ asymbol *sym;
+};
+
+/* Generic linker hash table. */
+
+struct generic_link_hash_table
+{
+ struct bfd_link_hash_table root;
+};
+
+/* Look up an entry in an generic link hash table. */
+
+#define _bfd_generic_link_hash_lookup(table, string, create, copy, follow) \
+ ((struct generic_link_hash_entry *) \
+ bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
+
+/* Traverse an generic link hash table. */
+
+#define _bfd_generic_link_hash_traverse(table, func, info) \
+ (bfd_link_hash_traverse \
+ (&(table)->root, \
+ (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
+ (info)))
+
+/* Get the generic link hash table from the info structure. This is
+ just a cast. */
+
+#define _bfd_generic_hash_table(p) \
+ ((struct generic_link_hash_table *) ((p)->hash))
+
+/* The generic linker reads in the asymbol structures for an input BFD
+ and keeps them in the outsymbol and symcount fields. */
+
+#define _bfd_generic_link_get_symbols(abfd) ((abfd)->outsymbols)
+#define _bfd_generic_link_get_symcount(abfd) ((abfd)->symcount)
+
+/* Add the symbols of input_bfd to the symbols being built for
+ output_bfd. */
+extern boolean _bfd_generic_link_output_symbols
+ PARAMS ((bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *,
+ size_t *psymalloc));
+
+/* This structure is used to pass information to
+ _bfd_generic_link_write_global_symbol, which may be called via
+ _bfd_generic_link_hash_traverse. */
+
+struct generic_write_global_symbol_info
+{
+ struct bfd_link_info *info;
+ bfd *output_bfd;
+ size_t *psymalloc;
+};
+
+/* Write out a single global symbol. This is expected to be called
+ via _bfd_generic_link_hash_traverse. The second argument must
+ actually be a struct generic_write_global_symbol_info *. */
+extern boolean _bfd_generic_link_write_global_symbol
+ PARAMS ((struct generic_link_hash_entry *, PTR));
+
+#endif
diff --git a/gnu/usr.bin/gdb/bfd/hash.c b/gnu/usr.bin/gdb/bfd/hash.c
new file mode 100644
index 0000000000000..cb11c2380e41e
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/hash.c
@@ -0,0 +1,470 @@
+/* hash.c -- hash table routines for BFD
+ Copyright (C) 1993, 94 Free Software Foundation, Inc.
+ Written by Steve Chamberlain <sac@cygnus.com>
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "obstack.h"
+
+/*
+SECTION
+ Hash Tables
+
+@cindex Hash tables
+ BFD provides a simple set of hash table functions. Routines
+ are provided to initialize a hash table, to free a hash table,
+ to look up a string in a hash table and optionally create an
+ entry for it, and to traverse a hash table. There is
+ currently no routine to delete an string from a hash table.
+
+ The basic hash table does not permit any data to be stored
+ with a string. However, a hash table is designed to present a
+ base class from which other types of hash tables may be
+ derived. These derived types may store additional information
+ with the string. Hash tables were implemented in this way,
+ rather than simply providing a data pointer in a hash table
+ entry, because they were designed for use by the linker back
+ ends. The linker may create thousands of hash table entries,
+ and the overhead of allocating private data and storing and
+ following pointers becomes noticeable.
+
+ The basic hash table code is in <<hash.c>>.
+
+@menu
+@* Creating and Freeing a Hash Table::
+@* Looking Up or Entering a String::
+@* Traversing a Hash Table::
+@* Deriving a New Hash Table Type::
+@end menu
+
+INODE
+Creating and Freeing a Hash Table, Looking Up or Entering a String, Hash Tables, Hash Tables
+SUBSECTION
+ Creating and freeing a hash table
+
+@findex bfd_hash_table_init
+@findex bfd_hash_table_init_n
+ To create a hash table, create an instance of a <<struct
+ bfd_hash_table>> (defined in <<bfd.h>>) and call
+ <<bfd_hash_table_init>> (if you know approximately how many
+ entries you will need, the function <<bfd_hash_table_init_n>>,
+ which takes a @var{size} argument, may be used).
+ <<bfd_hash_table_init>> returns <<false>> if some sort of
+ error occurs.
+
+@findex bfd_hash_newfunc
+ The function <<bfd_hash_table_init>> take as an argument a
+ function to use to create new entries. For a basic hash
+ table, use the function <<bfd_hash_newfunc>>. @xref{Deriving
+ a New Hash Table Type} for why you would want to use a
+ different value for this argument.
+
+@findex bfd_hash_allocate
+ <<bfd_hash_table_init>> will create an obstack which will be
+ used to allocate new entries. You may allocate memory on this
+ obstack using <<bfd_hash_allocate>>.
+
+@findex bfd_hash_table_free
+ Use <<bfd_hash_table_free>> to free up all the memory that has
+ been allocated for a hash table. This will not free up the
+ <<struct bfd_hash_table>> itself, which you must provide.
+
+INODE
+Looking Up or Entering a String, Traversing a Hash Table, Creating and Freeing a Hash Table, Hash Tables
+SUBSECTION
+ Looking up or entering a string
+
+@findex bfd_hash_lookup
+ The function <<bfd_hash_lookup>> is used both to look up a
+ string in the hash table and to create a new entry.
+
+ If the @var{create} argument is <<false>>, <<bfd_hash_lookup>>
+ will look up a string. If the string is found, it will
+ returns a pointer to a <<struct bfd_hash_entry>>. If the
+ string is not found in the table <<bfd_hash_lookup>> will
+ return <<NULL>>. You should not modify any of the fields in
+ the returns <<struct bfd_hash_entry>>.
+
+ If the @var{create} argument is <<true>>, the string will be
+ entered into the hash table if it is not already there.
+ Either way a pointer to a <<struct bfd_hash_entry>> will be
+ returned, either to the existing structure or to a newly
+ created one. In this case, a <<NULL>> return means that an
+ error occurred.
+
+ If the @var{create} argument is <<true>>, and a new entry is
+ created, the @var{copy} argument is used to decide whether to
+ copy the string onto the hash table obstack or not. If
+ @var{copy} is passed as <<false>>, you must be careful not to
+ deallocate or modify the string as long as the hash table
+ exists.
+
+INODE
+Traversing a Hash Table, Deriving a New Hash Table Type, Looking Up or Entering a String, Hash Tables
+SUBSECTION
+ Traversing a hash table
+
+@findex bfd_hash_traverse
+ The function <<bfd_hash_traverse>> may be used to traverse a
+ hash table, calling a function on each element. The traversal
+ is done in a random order.
+
+ <<bfd_hash_traverse>> takes as arguments a function and a
+ generic <<void *>> pointer. The function is called with a
+ hash table entry (a <<struct bfd_hash_entry *>>) and the
+ generic pointer passed to <<bfd_hash_traverse>>. The function
+ must return a <<boolean>> value, which indicates whether to
+ continue traversing the hash table. If the function returns
+ <<false>>, <<bfd_hash_traverse>> will stop the traversal and
+ return immediately.
+
+INODE
+Deriving a New Hash Table Type, , Traversing a Hash Table, Hash Tables
+SUBSECTION
+ Deriving a new hash table type
+
+ Many uses of hash tables want to store additional information
+ which each entry in the hash table. Some also find it
+ convenient to store additional information with the hash table
+ itself. This may be done using a derived hash table.
+
+ Since C is not an object oriented language, creating a derived
+ hash table requires sticking together some boilerplate
+ routines with a few differences specific to the type of hash
+ table you want to create.
+
+ An example of a derived hash table is the linker hash table.
+ The structures for this are defined in <<bfdlink.h>>. The
+ functions are in <<linker.c>>.
+
+ You may also derive a hash table from an already derived hash
+ table. For example, the a.out linker backend code uses a hash
+ table derived from the linker hash table.
+
+@menu
+@* Define the Derived Structures::
+@* Write the Derived Creation Routine::
+@* Write Other Derived Routines::
+@end menu
+
+INODE
+Define the Derived Structures, Write the Derived Creation Routine, Deriving a New Hash Table Type, Deriving a New Hash Table Type
+SUBSUBSECTION
+ Define the derived structures
+
+ You must define a structure for an entry in the hash table,
+ and a structure for the hash table itself.
+
+ The first field in the structure for an entry in the hash
+ table must be of the type used for an entry in the hash table
+ you are deriving from. If you are deriving from a basic hash
+ table this is <<struct bfd_hash_entry>>, which is defined in
+ <<bfd.h>>. The first field in the structure for the hash
+ table itself must be of the type of the hash table you are
+ deriving from itself. If you are deriving from a basic hash
+ table, this is <<struct bfd_hash_table>>.
+
+ For example, the linker hash table defines <<struct
+ bfd_link_hash_entry>> (in <<bfdlink.h>>). The first field,
+ <<root>>, is of type <<struct bfd_hash_entry>>. Similarly,
+ the first field in <<struct bfd_link_hash_table>>, <<table>>,
+ is of type <<struct bfd_hash_table>>.
+
+INODE
+Write the Derived Creation Routine, Write Other Derived Routines, Define the Derived Structures, Deriving a New Hash Table Type
+SUBSUBSECTION
+ Write the derived creation routine
+
+ You must write a routine which will create and initialize an
+ entry in the hash table. This routine is passed as the
+ function argument to <<bfd_hash_table_init>>.
+
+ In order to permit other hash tables to be derived from the
+ hash table you are creating, this routine must be written in a
+ standard way.
+
+ The first argument to the creation routine is a pointer to a
+ hash table entry. This may be <<NULL>>, in which case the
+ routine should allocate the right amount of space. Otherwise
+ the space has already been allocated by a hash table type
+ derived from this one.
+
+ After allocating space, the creation routine must call the
+ creation routine of the hash table type it is derived from,
+ passing in a pointer to the space it just allocated. This
+ will initialize any fields used by the base hash table.
+
+ Finally the creation routine must initialize any local fields
+ for the new hash table type.
+
+ Here is a boilerplate example of a creation routine.
+ @var{function_name} is the name of the routine.
+ @var{entry_type} is the type of an entry in the hash table you
+ are creating. @var{base_newfunc} is the name of the creation
+ routine of the hash table type your hash table is derived
+ from.
+
+EXAMPLE
+
+.struct bfd_hash_entry *
+.@var{function_name} (entry, table, string)
+. struct bfd_hash_entry *entry;
+. struct bfd_hash_table *table;
+. const char *string;
+.{
+. struct @var{entry_type} *ret = (@var{entry_type} *) entry;
+.
+. {* Allocate the structure if it has not already been allocated by a
+. derived class. *}
+. if (ret == (@var{entry_type} *) NULL)
+. {
+. ret = ((@var{entry_type} *)
+. bfd_hash_allocate (table, sizeof (@var{entry_type})));
+. if (ret == (@var{entry_type} *) NULL)
+. return NULL;
+. }
+.
+. {* Call the allocation method of the base class. *}
+. ret = ((@var{entry_type} *)
+. @var{base_newfunc} ((struct bfd_hash_entry *) ret, table, string));
+.
+. {* Initialize the local fields here. *}
+.
+. return (struct bfd_hash_entry *) ret;
+.}
+
+DESCRIPTION
+ The creation routine for the linker hash table, which is in
+ <<linker.c>>, looks just like this example.
+ @var{function_name} is <<_bfd_link_hash_newfunc>>.
+ @var{entry_type} is <<struct bfd_link_hash_entry>>.
+ @var{base_newfunc} is <<bfd_hash_newfunc>>, the creation
+ routine for a basic hash table.
+
+ <<_bfd_link_hash_newfunc>> also initializes the local fields
+ in a linker hash table entry: <<type>>, <<written>> and
+ <<next>>.
+
+INODE
+Write Other Derived Routines, , Write the Derived Creation Routine, Deriving a New Hash Table Type
+SUBSUBSECTION
+ Write other derived routines
+
+ You will want to write other routines for your new hash table,
+ as well.
+
+ You will want an initialization routine which calls the
+ initialization routine of the hash table you are deriving from
+ and initializes any other local fields. For the linker hash
+ table, this is <<_bfd_link_hash_table_init>> in <<linker.c>>.
+
+ You will want a lookup routine which calls the lookup routine
+ of the hash table you are deriving from and casts the result.
+ The linker hash table uses <<bfd_link_hash_lookup>> in
+ <<linker.c>> (this actually takes an additional argument which
+ it uses to decide how to return the looked up value).
+
+ You may want a traversal routine. This should just call the
+ traversal routine of the hash table you are deriving from with
+ appropriate casts. The linker hash table uses
+ <<bfd_link_hash_traverse>> in <<linker.c>>.
+
+ These routines may simply be defined as macros. For example,
+ the a.out backend linker hash table, which is derived from the
+ linker hash table, uses macros for the lookup and traversal
+ routines. These are <<aout_link_hash_lookup>> and
+ <<aout_link_hash_traverse>> in aoutx.h.
+*/
+
+/* Obstack allocation and deallocation routines. */
+#define obstack_chunk_alloc malloc
+#define obstack_chunk_free free
+
+/* The default number of entries to use when creating a hash table. */
+#define DEFAULT_SIZE (4051)
+
+/* Create a new hash table, given a number of entries. */
+
+boolean
+bfd_hash_table_init_n (table, newfunc, size)
+ struct bfd_hash_table *table;
+ struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *));
+ unsigned int size;
+{
+ unsigned int alloc;
+
+ alloc = size * sizeof (struct bfd_hash_entry *);
+ if (!obstack_begin (&table->memory, alloc))
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ table->table = ((struct bfd_hash_entry **)
+ obstack_alloc (&table->memory, alloc));
+ if (!table->table)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ memset ((PTR) table->table, 0, alloc);
+ table->size = size;
+ table->newfunc = newfunc;
+ return true;
+}
+
+/* Create a new hash table with the default number of entries. */
+
+boolean
+bfd_hash_table_init (table, newfunc)
+ struct bfd_hash_table *table;
+ struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *));
+{
+ return bfd_hash_table_init_n (table, newfunc, DEFAULT_SIZE);
+}
+
+/* Free a hash table. */
+
+void
+bfd_hash_table_free (table)
+ struct bfd_hash_table *table;
+{
+ obstack_free (&table->memory, (PTR) NULL);
+}
+
+/* Look up a string in a hash table. */
+
+struct bfd_hash_entry *
+bfd_hash_lookup (table, string, create, copy)
+ struct bfd_hash_table *table;
+ const char *string;
+ boolean create;
+ boolean copy;
+{
+ register const unsigned char *s;
+ register unsigned long hash;
+ register unsigned int c;
+ struct bfd_hash_entry *hashp;
+ unsigned int len;
+ unsigned int index;
+
+ hash = 0;
+ len = 0;
+ s = (const unsigned char *) string;
+ while ((c = *s++) != '\0')
+ {
+ hash += c + (c << 17);
+ hash ^= hash >> 2;
+ ++len;
+ }
+ hash += len + (len << 17);
+ hash ^= hash >> 2;
+
+ index = hash % table->size;
+ for (hashp = table->table[index];
+ hashp != (struct bfd_hash_entry *) NULL;
+ hashp = hashp->next)
+ {
+ if (hashp->hash == hash
+ && strcmp (hashp->string, string) == 0)
+ return hashp;
+ }
+
+ if (! create)
+ return (struct bfd_hash_entry *) NULL;
+
+ hashp = (*table->newfunc) ((struct bfd_hash_entry *) NULL, table, string);
+ if (hashp == (struct bfd_hash_entry *) NULL)
+ return (struct bfd_hash_entry *) NULL;
+ if (copy)
+ {
+ char *new;
+
+ new = (char *) obstack_alloc (&table->memory, len + 1);
+ if (!new)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return (struct bfd_hash_entry *) NULL;
+ }
+ strcpy (new, string);
+ string = new;
+ }
+ hashp->string = string;
+ hashp->hash = hash;
+ hashp->next = table->table[index];
+ table->table[index] = hashp;
+
+ return hashp;
+}
+
+/* Base method for creating a new hash table entry. */
+
+/*ARGSUSED*/
+struct bfd_hash_entry *
+bfd_hash_newfunc (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
+{
+ if (entry == (struct bfd_hash_entry *) NULL)
+ entry = ((struct bfd_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct bfd_hash_entry)));
+ return entry;
+}
+
+/* Allocate space in a hash table. */
+
+PTR
+bfd_hash_allocate (table, size)
+ struct bfd_hash_table *table;
+ unsigned int size;
+{
+ PTR ret;
+
+ ret = obstack_alloc (&table->memory, size);
+ if (ret == NULL && size != 0)
+ bfd_set_error (bfd_error_no_memory);
+ return ret;
+}
+
+/* Traverse a hash table. */
+
+void
+bfd_hash_traverse (table, func, info)
+ struct bfd_hash_table *table;
+ boolean (*func) PARAMS ((struct bfd_hash_entry *, PTR));
+ PTR info;
+{
+ unsigned int i;
+
+ for (i = 0; i < table->size; i++)
+ {
+ struct bfd_hash_entry *p;
+
+ for (p = table->table[i]; p != NULL; p = p->next)
+ {
+ if (! (*func) (p, info))
+ return;
+ }
+ }
+}
diff --git a/gnu/usr.bin/gdb/bfd/i386aout.c b/gnu/usr.bin/gdb/bfd/i386aout.c
new file mode 100644
index 0000000000000..0771fb0e2450c
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/i386aout.c
@@ -0,0 +1,68 @@
+/* BFD back-end for i386 a.out binaries.
+ Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+
+/* The only 386 aout system we have here is GO32 from DJ.
+ These numbers make BFD work with that. If your aout 386 system
+ doesn't work with these, we'll have to split them into different
+ files. Send me (sac@cygnus.com) the runes to make it work on your
+ system, and I'll stick it in for the next release. */
+
+#define N_HEADER_IN_TEXT(x) 0
+#define BYTES_IN_WORD 4
+
+#define N_TXTOFF(x) 0x20
+#define N_TXTADDR(x) (N_MAGIC(x)==ZMAGIC ? 0x1020 : 0)
+
+#define N_TXTSIZE(x) ((x).a_text)
+#if 0
+#define N_DATADDR(x) (N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) : (SEGMENT_SIZE + ((0x1020+(x).a_text-1) & ~(SEGMENT_SIZE-1))))
+#define NOSUBEXECB
+
+#endif
+#define PAGE_SIZE 4096
+#define SEGMENT_SIZE 0x400000
+#define DEFAULT_ARCH bfd_arch_i386
+
+#define MY(OP) CAT(i386aout_,OP)
+#define TARGETNAME "a.out-i386"
+#define NO_WRITE_HEADER_KLUDGE 1
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "libaout.h"
+static boolean MY(set_sizes)();
+#define MY_backend_data &MY(backend_data)
+static CONST struct aout_backend_data MY(backend_data) = {
+ 0, /* zmagic contiguous */
+ 1, /* text incl header */
+ 0, /* exec_hdr_flags */
+ 0, /* text vma? */
+ MY(set_sizes),
+ 1, /* exec header not counted */
+ 0, /* add_dynamic_symbols */
+ 0, /* add_one_symbol */
+ 0, /* link_dynamic_object */
+ 0, /* write_dynamic_symbol */
+ 0, /* check_dynamic_reloc */
+ 0 /* finish_dynamic_link */
+};
+
+#include "aout-target.h"
diff --git a/gnu/usr.bin/gdb/bfd/linker.c b/gnu/usr.bin/gdb/bfd/linker.c
new file mode 100644
index 0000000000000..d8275b5a0b57b
--- /dev/null
+++ b/gnu/usr.bin/gdb/bfd/linker.c
@@ -0,0 +1,2442 @@
+/* linker.c -- BFD linker routines
+ Copyright (C) 1993, 94 Free Software Foundation, Inc.
+ Written by Steve Chamberlain and Ian Lance Taylor, Cygnus Support
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "bfdlink.h"
+#include "genlink.h"
+
+/*
+SECTION
+ Linker Functions
+
+@cindex Linker
+ The linker uses three special entry points in the BFD target
+ vector. It is not necessary to write special routines for
+ these entry points when creating a new BFD back end, since
+ generic versions are provided. However, writing them can
+ speed up linking and make it use significantly less runtime
+ memory.
+
+ The first routine creates a hash table used by the other
+ routines. The second routine adds the symbols from an object
+ file to the hash table. The third routine takes all the
+ object files and links them together to create the output
+ file. These routines are designed so that the linker proper
+ does not need to know anything about the symbols in the object
+ files that it is linking. The linker merely arranges the
+ sections as directed by the linker script and lets BFD handle
+ the details of symbols and relocs.
+
+ The second routine and third routines are passed a pointer to
+ a <<struct bfd_link_info>> structure (defined in
+ <<bfdlink.h>>) which holds information relevant to the link,
+ including the linker hash table (which was created by the
+ first routine) and a set of callback functions to the linker
+ proper.
+
+ The generic linker routines are in <<linker.c>>, and use the
+ header file <<genlink.h>>. As of this writing, the only back
+ ends which have implemented versions of these routines are
+ a.out (in <<aoutx.h>>) and ECOFF (in <<ecoff.c>>). The a.out
+ routines are used as examples throughout this section.
+
+@menu
+@* Creating a Linker Hash Table::
+@* Adding Symbols to the Hash Table::
+@* Performing the Final Link::
+@end menu
+
+INODE
+Creating a Linker Hash Table, Adding Symbols to the Hash Table, Linker Functions, Linker Functions
+SUBSECTION
+ Creating a linker hash table
+
+@cindex _bfd_link_hash_table_create in target vector
+@cindex target vector (_bfd_link_hash_table_create)
+ The linker routines must create a hash table, which must be
+ derived from <<struct bfd_link_hash_table>> described in
+ <<bfdlink.c>>. @xref{Hash Tables} for information on how to
+ create a derived hash table. This entry point is called using
+ the target vector of the linker output file.
+
+ The <<_bfd_link_hash_table_create>> entry point must allocate
+ and initialize an instance of the desired hash table. If the
+ back end does not require any additional information to be
+ stored with the entries in the hash table, the entry point may
+ simply create a <<struct bfd_link_hash_table>>. Most likely,
+ however, some additional information will be needed.
+
+ For example, with each entry in the hash table the a.out
+ linker keeps the index the symbol has in the final output file
+ (this index number is used so that when doing a relocateable
+ link the symbol index used in the output file can be quickly
+ filled in when copying over a reloc). The a.out linker code
+ defines the required structures and functions for a hash table
+ derived from <<struct bfd_link_hash_table>>. The a.out linker
+ hash table is created by the function
+ <<NAME(aout,link_hash_table_create)>>; it simply allocates
+ space for the hash table, initializes it, and returns a
+ pointer to it.
+
+ When writing the linker routines for a new back end, you will
+ generally not know exactly which fields will be required until
+ you have finished. You should simply create a new hash table
+ which defines no additional fields, and then simply add fields
+ as they become necessary.
+
+INODE
+Adding Symbols to the Hash Table, Performing the Final Link, Creating a Linker Hash Table, Linker Functions
+SUBSECTION
+ Adding symbols to the hash table
+
+@cindex _bfd_link_add_symbols in target vector
+@cindex target vector (_bfd_link_add_symbols)
+ The linker proper will call the <<_bfd_link_add_symbols>>
+ entry point for each object file or archive which is to be
+ linked (typically these are the files named on the command
+ line, but some may also come from the linker script). The
+ entry point is responsible for examining the file. For an
+ object file, BFD must add any relevant symbol information to
+ the hash table. For an archive, BFD must determine which
+ elements of the archive should be used and adding them to the
+ link.
+
+ The a.out version of this entry point is
+ <<NAME(aout,link_add_symbols)>>.
+
+@menu
+@* Differing file formats::
+@* Adding symbols from an object file::
+@* Adding symbols from an archive::
+@end menu
+
+INODE
+Differing file formats, Adding symbols from an object file, Adding Symbols to the Hash Table, Adding Symbols to the Hash Table
+SUBSUBSECTION
+ Differing file formats
+
+ Normally all the files involved in a link will be of the same
+ format, but it is also possible to link together different
+ format object files, and the back end must support that. The
+ <<_bfd_link_add_symbols>> entry point is called via the target
+ vector of the file to be added. This has an important
+ consequence: the function may not assume that the hash table
+ is the type created by the corresponding
+ <<_bfd_link_hash_table_create>> vector. All the
+ <<_bfd_link_add_symbols>> function can assume about the hash
+ table is that it is derived from <<struct
+ bfd_link_hash_table>>.
+
+ Sometimes the <<_bfd_link_add_symbols>> function must store
+ some information in the hash table entry to be used by the
+ <<_bfd_final_link>> function. In such a case the <<creator>>
+ field of the hash table must be checked to make sure that the
+ hash table was created by an object file of the same format.
+
+ The <<_bfd_final_link>> routine must be prepared to handle a
+ hash entry without any extra information added by the
+ <<_bfd_link_add_symbols>> function. A hash entry without
+ extra information will also occur when the linker script
+ directs the linker to create a symbol. Note that, regardless
+ of how a hash table entry is added, all the fields will be
+ initialized to some sort of null value by the hash table entry
+ initialization function.
+
+ See <<ecoff_link_add_externals>> for an example of how to
+ check the <<creator>> field before saving information (in this
+ case, the ECOFF external symbol debugging information) in a
+ hash table entry.
+
+INODE
+Adding symbols from an object file, Adding symbols from an archive, Differing file formats, Adding Symbols to the Hash Table
+SUBSUBSECTION
+ Adding symbols from an object file
+
+ When the <<_bfd_link_add_symbols>> routine is passed an object
+ file, it must add all externally visible symbols in that
+ object file to the hash table. The actual work of adding the
+ symbol to the hash table is normally handled by the function
+ <<_bfd_generic_link_add_one_symbol>>. The
+ <<_bfd_link_add_symbols>> routine is responsible for reading
+ all the symbols from the object file and passing the correct
+ information to <<_bfd_generic_link_add_one_symbol>>.
+
+ The <<_bfd_link_add_symbols>> routine should not use
+ <<bfd_canonicalize_symtab>> to read the symbols. The point of
+ providing this routine is to avoid the overhead of converting
+ the symbols into generic <<asymbol>> structures.
+
+@findex _bfd_generic_link_add_one_symbol
+ <<_bfd_generic_link_add_one_symbol>> handles the details of
+ combining common symbols, warning about multiple definitions,
+ and so forth. It takes arguments which describe the symbol to
+ add, notably symbol flags, a section, and an offset. The
+ symbol flags include such things as <<BSF_WEAK>> or
+ <<BSF_INDIRECT>>. The section is a section in the object
+ file, or something like <<bfd_und_section_ptr>> for an undefined
+ symbol or <<bfd_com_section_ptr>> for a common symbol.
+
+ If the <<_bfd_final_link>> routine is also going to need to
+ read the symbol information, the <<_bfd_link_add_symbols>>
+ routine should save it somewhere attached to the object file
+ BFD. However, the information should only be saved if the
+ <<keep_memory>> field of the <<info>> argument is true, so
+ that the <<-no-keep-memory>> linker switch is effective.
+
+ The a.out function which adds symbols from an object file is
+ <<aout_link_add_object_symbols>>, and most of the interesting
+ work is in <<aout_link_add_symbols>>. The latter saves
+ pointers to the hash tables entries created by
+ <<_bfd_generic_link_add_one_symbol>> indexed by symbol number,
+ so that the <<_bfd_final_link>> routine does not have to call
+ the hash table lookup routine to locate the entry.
+
+INODE
+Adding symbols from an archive, , Adding symbols from an object file, Adding Symbols to the Hash Table
+SUBSUBSECTION
+ Adding symbols from an archive
+
+ When the <<_bfd_link_add_symbols>> routine is passed an
+ archive, it must look through the symbols defined by the
+ archive and decide which elements of the archive should be
+ included in the link. For each such element it must call the
+ <<add_archive_element>> linker callback, and it must add the
+ symbols from the object file to the linker hash table.
+
+@findex _bfd_generic_link_add_archive_symbols
+ In most cases the work of looking through the symbols in the
+ archive should be done by the
+ <<_bfd_generic_link_add_archive_symbols>> function. This
+ function builds a hash table from the archive symbol table and
+ looks through the list of undefined symbols to see which
+ elements should be included.
+ <<_bfd_generic_link_add_archive_symbols>> is passed a function
+ to call to make the final decision about adding an archive
+ element to the link and to do the actual work of adding the
+ symbols to the linker hash table.
+
+ The function passed to
+ <<_bfd_generic_link_add_archive_symbols>> must read the
+ symbols of the archive element and decide whether the archive
+ element should be included in the link. If the element is to
+ be included, the <<add_archive_element>> linker callback
+ routine must be called with the element as an argument, and
+ the elements symbols must be added to the linker hash table
+ just as though the element had itself been passed to the
+ <<_bfd_link_add_symbols>> function.
+
+ When the a.out <<_bfd_link_add_symbols>> function receives an
+ archive, it calls <<_bfd_generic_link_add_archive_symbols>>
+ passing <<aout_link_check_archive_element>> as the function
+ argument. <<aout_link_check_archive_element>> calls
+ <<aout_link_check_ar_symbols>>. If the latter decides to add
+ the element (an element is only added if it provides a real,
+ non-common, definition for a previously undefined or common
+ symbol) it calls the <<add_archive_element>> callback and then
+ <<aout_link_check_archive_element>> calls
+ <<aout_link_add_symbols>> to actually add the symbols to the
+ linker hash table.
+
+ The ECOFF back end is unusual in that it does not normally
+ call <<_bfd_generic_link_add_archive_symbols>>, because ECOFF
+ archives already contain a hash table of symbols. The ECOFF
+ back end searches the archive itself to avoid the overhead of
+ creating a new hash table.
+
+INODE
+Performing the Final Link, , Adding Symbols to the Hash Table, Linker Functions
+SUBSECTION
+ Performing the final link
+
+@cindex _bfd_link_final_link in target vector
+@cindex target vector (_bfd_final_link)
+ When all the input files have been processed, the linker calls
+ the <<_bfd_final_link>> entry point of the output BFD. This
+ routine is responsible for producing the final output file,
+ which has several aspects. It must relocate the contents of
+ the input sections and copy the data into the output sections.
+ It must build an output symbol table including any local
+ symbols from the input files and the global symbols from the
+ hash table. When producing relocateable output, it must
+ modify the input relocs and write them into the output file.
+ There may also be object format dependent work to be done.
+
+ The linker will also call the <<write_object_contents>> entry
+ point when the BFD is closed. The two entry points must work
+ together in order to produce the correct output file.
+
+ The details of how this works are inevitably dependent upon
+ the specific object file format. The a.out
+ <<_bfd_final_link>> routine is <<NAME(aout,final_link)>>.
+
+@menu
+@* Information provided by the linker::
+@* Relocating the section contents::
+@* Writing the symbol table::
+@end menu
+
+INODE
+Information provided by the linker, Relocating the section contents, Performing the Final Link, Performing the Final Link
+SUBSUBSECTION
+ Information provided by the linker
+
+ Before the linker calls the <<_bfd_final_link>> entry point,
+ it sets up some data structures for the function to use.
+
+ The <<input_bfds>> field of the <<bfd_link_info>> structure
+ will point to a list of all the input files included in the
+ link. These files are linked through the <<link_next>> field
+ of the <<bfd>> structure.
+
+ Each section in the output file will have a list of
+ <<link_order>> structures attached to the <<link_order_head>>
+ field (the <<link_order>> structure is defined in
+ <<bfdlink.h>>). These structures describe how to create the
+ contents of the output section in terms of the contents of
+ various input sections, fill constants, and, eventually, other
+ types of information. They also describe relocs that must be
+ created by the BFD backend, but do not correspond to any input
+ file; this is used to support -Ur, which builds constructors
+ while generating a relocateable object file.
+
+INODE
+Relocating the section contents, Writing the symbol table, Information provided by the linker, Performing the Final Link
+SUBSUBSECTION
+ Relocating the section contents
+
+ The <<_bfd_final_link>> function should look through the
+ <<link_order>> structures attached to each section of the
+ output file. Each <<link_order>> structure should either be
+ handled specially, or it should be passed to the function
+ <<_bfd_default_link_order>> which will do the right thing
+ (<<_bfd_default_link_order>> is defined in <<linker.c>>).
+
+ For efficiency, a <<link_order>> of type
+ <<bfd_indirect_link_order>> whose associated section belongs
+ to a BFD of the same format as the output BFD must be handled
+ specially. This type of <<link_order>> describes part of an
+ output section in terms of a section belonging to one of the
+ input files. The <<_bfd_final_link>> function should read the
+ contents of the section and any associated relocs, apply the
+ relocs to the section contents, and write out the modified
+ section contents. If performing a relocateable link, the
+ relocs themselves must also be modified and written out.
+
+@findex _bfd_relocate_contents
+@findex _bfd_final_link_relocate
+ The functions <<_bfd_relocate_contents>> and
+ <<_bfd_final_link_relocate>> provide some general support for
+ performing the actual relocations, notably overflow checking.
+ Their arguments include information about the symbol the
+ relocation is against and a <<reloc_howto_type>> argument
+ which describes the relocation to perform. These functions
+ are defined in <<reloc.c>>.
+
+ The a.out function which handles reading, relocating, and
+ writing section contents is <<aout_link_input_section>>. The
+ actual relocation is done in <<aout_link_input_section_std>>
+ and <<aout_link_input_section_ext>>.
+
+INODE
+Writing the symbol table, , Relocating the section contents, Performing the Final Link
+SUBSUBSECTION
+ Writing the symbol table
+
+ The <<_bfd_final_link>> function must gather all the symbols
+ in the input files and write them out. It must also write out
+ all the symbols in the global hash table. This must be
+ controlled by the <<strip>> and <<discard>> fields of the
+ <<bfd_link_info>> structure.
+
+ The local symbols of the input files will not have been
+ entered into the linker hash table. The <<_bfd_final_link>>
+ routine must consider each input file and include the symbols
+ in the output file. It may be convenient to do this when
+ looking through the <<link_order>> structures, or it may be
+ done by stepping through the <<input_bfds>> list.
+
+ The <<_bfd_final_link>> routine must also traverse the global
+ hash table to gather all the externally visible symbols. It
+ is possible that most of the externally visible symbols may be
+ written out when considering the symbols of each input file,
+ but it is still necessary to traverse the hash table since the
+ linker script may have defined some symbols that are not in
+ any of the input files. The <<written>> field in the
+ <<bfd_link_hash_entry>> structure may be used to determine
+ which entries in the hash table have not already been written
+ out.
+
+ The <<strip>> field of the <<bfd_link_info>> structure
+ controls which symbols are written out. The possible values
+ are listed in <<bfdlink.h>>. If the value is <<strip_some>>,
+ then the <<keep_hash>> field of the <<bfd_link_info>>
+ structure is a hash table of symbols to keep; each symbol
+ should be looked up in this hash table, and only symbols which
+ are present should be included in the output file.
+
+ If the <<strip>> field of the <<bfd_link_info>> structure
+ permits local symbols to be written out, the <<discard>> field
+ is used to further controls which local symbols are included
+ in the output file. If the value is <<discard_l>>, then all
+ local symbols which begin with a certain prefix are discarded;
+ this prefix is described by the <<lprefix>> and
+ <<lprefix_len>> fields of the <<bfd_link_info>> structure.
+
+ The a.out backend handles symbols by calling
+ <<aout_link_write_symbols>> on each input BFD and then
+ traversing the global hash table with the function
+ <<aout_link_write_other_symbol>>. It builds a string table
+ while writing out the symbols, which is written to the output
+ file at the end of <<NAME(aout,final_link)>>.
+*/
+
+static struct bfd_hash_entry *generic_link_hash_newfunc
+ PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *,
+ const char *));
+static boolean generic_link_read_symbols
+ PARAMS ((bfd *));
+static boolean generic_link_add_symbols
+ PARAMS ((bfd *, struct bfd_link_info *, boolean collect));
+static boolean generic_link_add_object_symbols
+ PARAMS ((bfd *, struct bfd_link_info *, boolean collect));
+static boolean generic_link_check_archive_element_no_collect
+ PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
+static boolean generic_link_check_archive_element_collect
+ PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
+static boolean generic_link_check_archive_element
+ PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded, boolean collect));
+static boolean generic_link_add_symbol_list
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_size_type count, asymbol **,
+ boolean collect));
+static boolean generic_add_output_symbol
+ PARAMS ((bfd *, size_t *psymalloc, asymbol *));
+static boolean default_fill_link_order
+ PARAMS ((bfd *, struct bfd_link_info *, asection *,
+ struct bfd_link_order *));
+static boolean default_indirect_link_order
+ PARAMS ((bfd *, struct bfd_link_info *, asection *,
+ struct bfd_link_order *));
+
+/* The link hash table structure is defined in bfdlink.h. It provides
+ a base hash table which the backend specific hash tables are built
+ upon. */
+
+/* Routine to create an entry in the link hash table. */
+
+struct bfd_hash_entry *
+_bfd_link_hash_newfunc (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
+{
+ struct bfd_link_hash_entry *ret = (struct bfd_link_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == (struct bfd_link_hash_entry *) NULL)
+ ret = ((struct bfd_link_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct bfd_link_hash_entry)));
+ if (ret == (struct bfd_link_hash_entry *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct bfd_link_hash_entry *)
+ bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
+
+ if (ret)
+ {
+ /* Initialize the local fields. */
+ ret->type = bfd_link_hash_new;
+ ret->next = NULL;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
+/* Initialize a link hash table. The BFD argument is the one
+ responsible for creating this table. */
+
+boolean
+_bfd_link_hash_table_init (table, abfd, newfunc)
+ struct bfd_link_hash_table *table;
+ bfd *abfd;
+ struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *));
+{
+ table->creator = abfd->xvec;
+ table->undefs = NULL;
+ table->undefs_tail = NULL;
+ return bfd_hash_table_init (&table->table, newfunc);
+}
+
+/* Look up a symbol in a link hash table. If follow is true, we
+ follow bfd_link_hash_indirect and bfd_link_hash_warning links to
+ the real symbol. */
+
+struct bfd_link_hash_entry *
+bfd_link_hash_lookup (table, string, create, copy, follow)
+ struct bfd_link_hash_table *table;
+ const char *string;
+ boolean create;
+ boolean copy;
+ boolean follow;
+{
+ struct bfd_link_hash_entry *ret;
+
+ ret = ((struct bfd_link_hash_entry *)
+ bfd_hash_lookup (&table->table, string, create, copy));
+
+ if (follow && ret != (struct bfd_link_hash_entry *) NULL)
+ {
+ while (ret->type == bfd_link_hash_indirect
+ || ret->type == bfd_link_hash_warning)
+ ret = ret->u.i.link;
+ }
+
+ return ret;
+}
+
+/* Traverse a generic link hash table. The only reason this is not a
+ macro is to do better type checking. This code presumes that an
+ argument passed as a struct bfd_hash_entry * may be caught as a
+ struct bfd_link_hash_entry * with no explicit cast required on the
+ call. */
+
+void
+bfd_link_hash_traverse (table, func, info)
+ struct bfd_link_hash_table *table;
+ boolean (*func) PARAMS ((struct bfd_link_hash_entry *, PTR));
+ PTR info;
+{
+ bfd_hash_traverse (&table->table,
+ ((boolean (*) PARAMS ((struct bfd_hash_entry *, PTR)))
+ func),
+ info);
+}
+
+/* Add a symbol to the linker hash table undefs list. */
+
+INLINE void
+bfd_link_add_undef (table, h)
+ struct bfd_link_hash_table *table;
+ struct bfd_link_hash_entry *h;
+{
+ BFD_ASSERT (h->next == NULL);
+ if (table->undefs_tail != (struct bfd_link_hash_entry *) NULL)
+ table->undefs_tail->next = h;
+ if (table->undefs == (struct bfd_link_hash_entry *) NULL)
+ table->undefs = h;
+ table->undefs_tail = h;
+}
+
+/* Routine to create an entry in an generic link hash table. */
+
+static struct bfd_hash_entry *
+generic_link_hash_newfunc (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
+{
+ struct generic_link_hash_entry *ret =
+ (struct generic_link_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == (struct generic_link_hash_entry *) NULL)
+ ret = ((struct generic_link_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct generic_link_hash_entry)));
+ if (ret == (struct generic_link_hash_entry *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct generic_link_hash_entry *)
+ _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
+ table, string));
+
+ if (ret)
+ {
+ /* Set local fields. */
+ ret->written = false;
+ ret->sym = NULL;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
+/* Create an generic link hash table. */
+
+struct bfd_link_hash_table *
+_bfd_generic_link_hash_table_create (abfd)
+ bfd *abfd;
+{
+ struct generic_link_hash_table *ret;
+
+ ret = ((struct generic_link_hash_table *)
+ malloc (sizeof (struct generic_link_hash_table)));
+ if (!ret)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return (struct bfd_link_hash_table *) NULL;
+ }
+ if (! _bfd_link_hash_table_init (&ret->root, abfd,
+ generic_link_hash_newfunc))
+ {
+ free (ret);
+ return (struct bfd_link_hash_table *) NULL;
+ }
+ return &ret->root;
+}
+
+/* Grab the symbols for an object file when doing a generic link. We
+ store the symbols in the outsymbols field. We need to keep them
+ around for the entire link to ensure that we only read them once.
+ If we read them multiple times, we might wind up with relocs and
+ the hash table pointing to different instances of the symbol
+ structure. */
+
+static boolean
+generic_link_read_symbols (abfd)
+ bfd *abfd;
+{
+ if (abfd->outsymbols == (asymbol **) NULL)
+ {
+ long symsize;
+ long symcount;
+
+ symsize = bfd_get_symtab_upper_bound (abfd);
+ if (symsize < 0)
+ return false;
+ abfd->outsymbols = (asymbol **) bfd_alloc (abfd, symsize);
+ if (abfd->outsymbols == NULL && symsize != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ symcount = bfd_canonicalize_symtab (abfd, abfd->outsymbols);
+ if (symcount < 0)
+ return false;
+ abfd->symcount = symcount;
+ }
+
+ return true;
+}
+
+/* Generic function to add symbols to from an object file to the
+ global hash table. This version does not automatically collect
+ constructors by name. */
+
+boolean
+_bfd_generic_link_add_symbols (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ return generic_link_add_symbols (abfd, info, false);
+}
+
+/* Generic function to add symbols from an object file to the global
+ hash table. This version automatically collects constructors by
+ name, as the collect2 program does. It should be used for any
+ target which does not provide some other mechanism for setting up
+ constructors and destructors; these are approximately those targets
+ for which gcc uses collect2 and do not support stabs. */
+
+boolean
+_bfd_generic_link_add_symbols_collect (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ return generic_link_add_symbols (abfd, info, true);
+}
+
+/* Add symbols from an object file to the global hash table. */
+
+static boolean
+generic_link_add_symbols (abfd, info, collect)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ boolean collect;
+{
+ boolean ret;
+
+ switch (bfd_get_format (abfd))
+ {
+ case bfd_object:
+ ret = generic_link_add_object_symbols (abfd, info, collect);
+ break;
+ case bfd_archive:
+ ret = (_bfd_generic_link_add_archive_symbols
+ (abfd, info,
+ (collect
+ ? generic_link_check_archive_element_collect
+ : generic_link_check_archive_element_no_collect)));
+ break;
+ default:
+ bfd_set_error (bfd_error_wrong_format);
+ ret = false;
+ }
+
+ return ret;
+}
+
+/* Add symbols from an object file to the global hash table. */
+
+static boolean
+generic_link_add_object_symbols (abfd, info, collect)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ boolean collect;
+{
+ if (! generic_link_read_symbols (abfd))
+ return false;
+ return generic_link_add_symbol_list (abfd, info,
+ _bfd_generic_link_get_symcount (abfd),
+ _bfd_generic_link_get_symbols (abfd),
+ collect);
+}
+
+/* We build a hash table of all symbols defined in an archive. */
+
+/* An archive symbol may be defined by multiple archive elements.
+ This linked list is used to hold the elements. */
+
+struct archive_list
+{
+ struct archive_list *next;
+ int indx;
+};
+
+/* An entry in an archive hash table. */
+
+struct archive_hash_entry
+{
+ struct bfd_hash_entry root;
+ /* Where the symbol is defined. */
+ struct archive_list *defs;
+};
+
+/* An archive hash table itself. */
+
+struct archive_hash_table
+{
+ struct bfd_hash_table table;
+};
+
+static struct bfd_hash_entry *archive_hash_newfunc
+ PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
+static boolean archive_hash_table_init
+ PARAMS ((struct archive_hash_table *,
+ struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *)));
+
+/* Create a new entry for an archive hash table. */
+
+static struct bfd_hash_entry *
+archive_hash_newfunc (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
+{
+ struct archive_hash_entry *ret = (struct archive_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == (struct archive_hash_entry *) NULL)
+ ret = ((struct archive_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct archive_hash_entry)));
+ if (ret == (struct archive_hash_entry *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct archive_hash_entry *)
+ bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
+
+ if (ret)
+ {
+ /* Initialize the local fields. */
+ ret->defs = (struct archive_list *) NULL;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
+/* Initialize an archive hash table. */
+
+static boolean
+archive_hash_table_init (table, newfunc)
+ struct archive_hash_table *table;
+ struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *));
+{
+ return bfd_hash_table_init (&table->table, newfunc);
+}
+
+/* Look up an entry in an archive hash table. */
+
+#define archive_hash_lookup(t, string, create, copy) \
+ ((struct archive_hash_entry *) \
+ bfd_hash_lookup (&(t)->table, (string), (create), (copy)))
+
+/* Allocate space in an archive hash table. */
+
+#define archive_hash_allocate(t, size) bfd_hash_allocate (&(t)->table, (size))
+
+/* Free an archive hash table. */
+
+#define archive_hash_table_free(t) bfd_hash_table_free (&(t)->table)
+
+/* Generic function to add symbols from an archive file to the global
+ hash file. This function presumes that the archive symbol table
+ has already been read in (this is normally done by the
+ bfd_check_format entry point). It looks through the undefined and
+ common symbols and searches the archive symbol table for them. If
+ it finds an entry, it includes the associated object file in the
+ link.
+
+ The old linker looked through the archive symbol table for
+ undefined symbols. We do it the other way around, looking through
+ undefined symbols for symbols defined in the archive. The
+ advantage of the newer scheme is that we only have to look through
+ the list of undefined symbols once, whereas the old method had to
+ re-search the symbol table each time a new object file was added.
+
+ The CHECKFN argument is used to see if an object file should be
+ included. CHECKFN should set *PNEEDED to true if the object file
+ should be included, and must also call the bfd_link_info
+ add_archive_element callback function and handle adding the symbols
+ to the global hash table. CHECKFN should only return false if some
+ sort of error occurs.
+
+ For some formats, such as a.out, it is possible to look through an
+ object file but not actually include it in the link. The
+ archive_pass field in a BFD is used to avoid checking the symbols
+ of an object files too many times. When an object is included in
+ the link, archive_pass is set to -1. If an object is scanned but
+ not included, archive_pass is set to the pass number. The pass
+ number is incremented each time a new object file is included. The
+ pass number is used because when a new object file is included it
+ may create new undefined symbols which cause a previously examined
+ object file to be included. */
+
+boolean
+_bfd_generic_link_add_archive_symbols (abfd, info, checkfn)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ boolean (*checkfn) PARAMS ((bfd *, struct bfd_link_info *,
+ boolean *pneeded));
+{
+ carsym *arsyms;
+ carsym *arsym_end;
+ register carsym *arsym;
+ int pass;
+ struct archive_hash_table arsym_hash;
+ int indx;
+ struct bfd_link_hash_entry **pundef;
+
+ if (! bfd_has_map (abfd))
+ {
+ bfd_set_error (bfd_error_no_symbols);
+ return false;
+ }
+
+ arsyms = bfd_ardata (abfd)->symdefs;
+ arsym_end = arsyms + bfd_ardata (abfd)->symdef_count;
+
+ /* In order to quickly determine whether an symbol is defined in
+ this archive, we build a hash table of the symbols. */
+ if (! archive_hash_table_init (&arsym_hash, archive_hash_newfunc))
+ return false;
+ for (arsym = arsyms, indx = 0; arsym < arsym_end; arsym++, indx++)
+ {
+ struct archive_hash_entry *arh;
+ struct archive_list *l, **pp;
+
+ arh = archive_hash_lookup (&arsym_hash, arsym->name, true, false);
+ if (arh == (struct archive_hash_entry *) NULL)
+ goto error_return;
+ l = ((struct archive_list *)
+ archive_hash_allocate (&arsym_hash, sizeof (struct archive_list)));
+ if (l == NULL)
+ goto error_return;
+ l->indx = indx;
+ for (pp = &arh->defs;
+ *pp != (struct archive_list *) NULL;
+ pp = &(*pp)->next)
+ ;
+ *pp = l;
+ l->next = NULL;
+ }
+
+ /* The archive_pass field in the archive itself is used to
+ initialize PASS, sine we may search the same archive multiple
+ times. */
+ pass = abfd->archive_pass;
+ if (pass == 0)
+ pass = 1;
+
+ /* New undefined symbols are added to the end of the list, so we
+ only need to look through it once. */
+ pundef = &info->hash->undefs;
+ while (*pundef != (struct bfd_link_hash_entry *) NULL)
+ {
+ struct bfd_link_hash_entry *h;
+ struct archive_hash_entry *arh;
+ struct archive_list *l;
+
+ h = *pundef;
+
+ /* When a symbol is defined, it is not necessarily removed from
+ the list. */
+ if (h->type != bfd_link_hash_undefined
+ && h->type != bfd_link_hash_common)
+ {
+ /* Remove this entry from the list, for general cleanliness
+ and because we are going to look through the list again
+ if we search any more libraries. We can't remove the
+ entry if it is the tail, because that would lose any
+ entries we add to the list later on (it would also cause
+ us to lose track of whether the symbol has been
+ referenced). */
+ if (*pundef != info->hash->undefs_tail)
+ *pundef = (*pundef)->next;
+ else
+ pundef = &(*pundef)->next;
+ continue;
+ }
+
+ /* Look for this symbol in the archive symbol map. */
+ arh = archive_hash_lookup (&arsym_hash, h->root.string, false, false);
+ if (arh == (struct archive_hash_entry *) NULL)
+ {
+ pundef = &(*pundef)->next;
+ continue;
+ }
+
+ /* Look at all the objects which define this symbol. */
+ for (l = arh->defs; l != (struct archive_list *) NULL; l = l->next)
+ {
+ bfd *element;
+ boolean needed;
+
+ /* If the symbol has gotten defined along the way, quit. */
+ if (h->type != bfd_link_hash_undefined
+ && h->type != bfd_link_hash_common)
+ break;
+
+ element = bfd_get_elt_at_index (abfd, l->indx);
+ if (element == (bfd *) NULL)
+ goto error_return;
+
+ /* If we've already included this element, or if we've
+ already checked it on this pass, continue. */
+ if (element->archive_pass == -1
+ || element->archive_pass == pass)
+ continue;
+
+ /* If we can't figure this element out, just ignore it. */
+ if (! bfd_check_format (element, bfd_object))
+ {
+ element->archive_pass = -1;
+ continue;
+ }
+
+ /* CHECKFN will see if this element should be included, and
+ go ahead and include it if appropriate. */
+ if (! (*checkfn) (element, info, &needed))
+ goto error_return;
+
+ if (! needed)
+ element->archive_pass = pass;
+ else
+ {
+ element->archive_pass = -1;
+
+ /* Increment the pass count to show that we may need to
+ recheck object files which were already checked. */
+ ++pass;
+ }
+ }
+
+ pundef = &(*pundef)->next;
+ }
+
+ archive_hash_table_free (&arsym_hash);
+
+ /* Save PASS in case we are called again. */
+ abfd->archive_pass = pass;
+
+ return true;
+
+ error_return:
+ archive_hash_table_free (&arsym_hash);
+ return false;
+}
+
+/* See if we should include an archive element. This version is used
+ when we do not want to automatically collect constructors based on
+ the symbol name, presumably because we have some other mechanism
+ for finding them. */
+
+static boolean
+generic_link_check_archive_element_no_collect (abfd, info, pneeded)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ boolean *pneeded;
+{
+ return generic_link_check_archive_element (abfd, info, pneeded, false);
+}
+
+/* See if we should include an archive element. This version is used
+ when we want to automatically collect constructors based on the
+ symbol name, as collect2 does. */
+
+static boolean
+generic_link_check_archive_element_collect (abfd, info, pneeded)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ boolean *pneeded;
+{
+ return generic_link_check_archive_element (abfd, info, pneeded, true);
+}
+
+/* See if we should include an archive element. Optionally collect
+ constructors. */
+
+static boolean
+generic_link_check_archive_element (abfd, info, pneeded, collect)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ boolean *pneeded;
+ boolean collect;
+{
+ asymbol **pp, **ppend;
+
+ *pneeded = false;
+
+ if (! generic_link_read_symbols (abfd))
+ return false;
+
+ pp = _bfd_generic_link_get_symbols (abfd);
+ ppend = pp + _bfd_generic_link_get_symcount (abfd);
+ for (; pp < ppend; pp++)
+ {
+ asymbol *p;
+ struct bfd_link_hash_entry *h;
+
+ p = *pp;
+
+ /* We are only interested in globally visible symbols. */
+ if (! bfd_is_com_section (p->section)
+ && (p->flags & (BSF_GLOBAL | BSF_INDIRECT | BSF_WEAK)) == 0)
+ continue;
+
+ /* We are only interested if we know something about this
+ symbol, and it is undefined or common. An undefined weak
+ symbol (type bfd_link_hash_weak) is not considered to be a
+ reference when pulling files out of an archive. See the SVR4
+ ABI, p. 4-27. */
+ h = bfd_link_hash_lookup (info->hash, bfd_asymbol_name (p), false,
+ false, true);
+ if (h == (struct bfd_link_hash_entry *) NULL
+ || (h->type != bfd_link_hash_undefined
+ && h->type != bfd_link_hash_common))
+ continue;
+
+ /* P is a symbol we are looking for. */
+
+ if (! bfd_is_com_section (p->section))
+ {
+ bfd_size_type symcount;
+ asymbol **symbols;
+
+ /* This object file defines this symbol, so pull it in. */
+ if (! (*info->callbacks->add_archive_element) (info, abfd,
+ bfd_asymbol_name (p)))
+ return false;
+ symcount = _bfd_generic_link_get_symcount (abfd);
+ symbols = _bfd_generic_link_get_symbols (abfd);
+ if (! generic_link_add_symbol_list (abfd, info, symcount,
+ symbols, collect))
+ return false;
+ *pneeded = true;
+ return true;
+ }
+
+ /* P is a common symbol. */
+
+ if (h->type == bfd_link_hash_undefined)
+ {
+ bfd *symbfd;
+
+ symbfd = h->u.undef.abfd;
+ if (symbfd == (bfd *) NULL)
+ {
+ /* This symbol was created as undefined from outside
+ BFD. We assume that we should link in the object
+ file. This is for the -u option in the linker. */
+ if (! (*info->callbacks->add_archive_element)
+ (info, abfd, bfd_asymbol_name (p)))
+ return false;
+ *pneeded = true;
+ return true;
+ }
+
+ /* Turn the symbol into a common symbol but do not link in
+ the object file. This is how a.out works. Object
+ formats that require different semantics must implement
+ this function differently. This symbol is already on the
+ undefs list. We add the section to a common section
+ attached to symbfd to ensure that it is in a BFD which
+ will be linked in. */
+ h->type = bfd_link_hash_common;
+ h->u.c.size = bfd_asymbol_value (p);
+ if (p->section == bfd_com_section_ptr)
+ h->u.c.section = bfd_make_section_old_way (symbfd, "COMMON");
+ else
+ h->u.c.section = bfd_make_section_old_way (symbfd,
+ p->section->name);
+ h->u.c.section->flags = SEC_ALLOC;
+ }
+ else
+ {
+ /* Adjust the size of the common symbol if necessary. This
+ is how a.out works. Object formats that require
+ different semantics must implement this function
+ differently. */
+ if (bfd_asymbol_value (p) > h->u.c.size)
+ h->u.c.size = bfd_asymbol_value (p);
+ }
+ }
+
+ /* This archive element is not needed. */
+ return true;
+}
+
+/* Add the symbols from an object file to the global hash table. ABFD
+ is the object file. INFO is the linker information. SYMBOL_COUNT
+ is the number of symbols. SYMBOLS is the list of symbols. COLLECT
+ is true if constructors should be automatically collected by name
+ as is done by collect2. */
+
+static boolean
+generic_link_add_symbol_list (abfd, info, symbol_count, symbols, collect)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ bfd_size_type symbol_count;
+ asymbol **symbols;
+ boolean collect;
+{
+ asymbol **pp, **ppend;
+
+ pp = symbols;
+ ppend = symbols + symbol_count;
+ for (; pp < ppend; pp++)
+ {
+ asymbol *p;
+
+ p = *pp;
+
+ if ((p->flags & (BSF_INDIRECT
+ | BSF_WARNING
+ | BSF_GLOBAL
+ | BSF_CONSTRUCTOR
+ | BSF_WEAK)) != 0
+ || bfd_is_und_section (bfd_get_section (p))
+ || bfd_is_com_section (bfd_get_section (p))
+ || bfd_is_ind_section (bfd_get_section (p)))
+ {
+ const char *name;
+ const char *string;
+ struct generic_link_hash_entry *h;
+
+ name = bfd_asymbol_name (p);
+ if ((p->flags & BSF_INDIRECT) != 0
+ || bfd_is_ind_section (p->section))
+ string = bfd_asymbol_name ((asymbol *) p->value);
+ else if ((p->flags & BSF_WARNING) != 0)
+ {
+ /* The name of P is actually the warning string, and the
+ value is actually a pointer to the symbol to warn
+ about. */
+ string = name;
+ name = bfd_asymbol_name ((asymbol *) p->value);
+ }
+ else
+ string = NULL;
+
+ h = NULL;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, name, p->flags, bfd_get_section (p),
+ p->value, string, false, collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+
+ /* Save the BFD symbol so that we don't lose any backend
+ specific information that may be attached to it. We only
+ want this one if it gives more information than the
+ existing one; we don't want to replace a defined symbol
+ with an undefined one. This routine may be called with a
+ hash table other than the generic hash table, so we only
+ do this if we are certain that the hash table is a
+ generic one. */
+ if (info->hash->creator == abfd->xvec)
+ {
+ if (h->sym == (asymbol *) NULL
+ || (! bfd_is_und_section (bfd_get_section (p))
+ && (! bfd_is_com_section (bfd_get_section (p))
+ || bfd_is_und_section (bfd_get_section (h->sym)))))
+ {
+ h->sym = p;
+ /* BSF_OLD_COMMON is a hack to support COFF reloc
+ reading, and it should go away when the COFF
+ linker is switched to the new version. */
+ if (bfd_is_com_section (bfd_get_section (p)))
+ p->flags |= BSF_OLD_COMMON;
+ }
+
+ /* Store a back pointer from the symbol to the hash
+ table entry for the benefit of relaxation code until
+ it gets rewritten to not use asymbol structures. */
+ p->udata = (PTR) h;
+ }
+ }
+ }
+
+ return true;
+}
+
+/* We use a state table to deal with adding symbols from an object
+ file. The first index into the state table describes the symbol
+ from the object file. The second index into the state table is the
+ type of the symbol in the hash table. */
+
+/* The symbol from the object file is turned into one of these row
+ values. */
+
+enum link_row
+{
+ UNDEF_ROW, /* Undefined. */
+ UNDEFW_ROW, /* Weak undefined. */
+ DEF_ROW, /* Defined. */
+ DEFW_ROW, /* Weak defined. */
+ COMMON_ROW, /* Common. */
+ INDR_ROW, /* Indirect. */
+ WARN_ROW, /* Warning. */
+ SET_ROW /* Member of set. */
+};
+
+/* apparently needed for Hitachi 3050R(HI-UX/WE2)? */
+#undef FAIL
+
+/* The actions to take in the state table. */
+
+enum link_action
+{
+ FAIL, /* Abort. */
+ UND, /* Mark symbol undefined. */
+ WEAK, /* Mark symbol weak undefined. */
+ DEF, /* Mark symbol defined. */
+ COM, /* Mark symbol common. */
+ REF, /* Mark defined symbol referenced. */
+ CREF, /* Possibly warn about common reference to defined symbol. */
+ CDEF, /* Define existing common symbol. */
+ NOACT, /* No action. */
+ BIG, /* Mark symbol common using largest size. */
+ MDEF, /* Multiple definition error. */
+ MIND, /* Multiple indirect symbols. */
+ IND, /* Make indirect symbol. */
+ SET, /* Add value to set. */
+ MWARN, /* Make warning symbol. */
+ WARN, /* Issue warning. */
+ CWARN, /* Warn if referenced, else MWARN. */
+ CYCLE, /* Repeat with symbol pointed to. */
+ REFC, /* Mark indirect symbol referenced and then CYCLE. */
+ WARNC /* Issue warning and then CYCLE. */
+};
+
+/* The state table itself. The first index is a link_row and the
+ second index is a bfd_link_hash_type. */
+
+static const enum link_action link_action[8][7] =
+{
+ /* current\prev new undef weak def com indr warn */
+ /* UNDEF_ROW */ {UND, NOACT, NOACT, REF, NOACT, REFC, WARNC },
+ /* UNDEFW_ROW */ {WEAK, WEAK, NOACT, REF, NOACT, REFC, WARNC },
+ /* DEF_ROW */ {DEF, DEF, DEF, MDEF, CDEF, MDEF, CYCLE },
+ /* DEFW_ROW */ {DEF, DEF, DEF, NOACT, NOACT, NOACT, CYCLE },
+ /* COMMON_ROW */ {COM, COM, COM, CREF, BIG, MDEF, WARNC },
+ /* INDR_ROW */ {IND, IND, IND, MDEF, MDEF, MIND, CYCLE },
+ /* WARN_ROW */ {MWARN, WARN, WARN, CWARN, WARN, CWARN, CYCLE },
+ /* SET_ROW */ {SET, SET, SET, SET, SET, CYCLE, CYCLE }
+};
+
+/* Most of the entries in the LINK_ACTION table are straightforward,
+ but a few are somewhat subtle.
+
+ A reference to an indirect symbol (UNDEF_ROW/indr or
+ UNDEFW_ROW/indr) is counted as a reference both to the indirect
+ symbol and to the symbol the indirect symbol points to.
+
+ A reference to a warning symbol (UNDEF_ROW/warn or UNDEFW_ROW/warn)
+ causes the warning to be issued.
+
+ A common definition of an indirect symbol (COMMON_ROW/indr) is
+ treated as a multiple definition error. Likewise for an indirect
+ definition of a common symbol (INDR_ROW/com).
+
+ An indirect definition of a warning (INDR_ROW/warn) does not cause
+ the warning to be issued.
+
+ If a warning is created for an indirect symbol (WARN_ROW/indr) no
+ warning is created for the symbol the indirect symbol points to.
+
+ Adding an entry to a set does not count as a reference to a set,
+ and no warning is issued (SET_ROW/warn). */
+
+/* Add a symbol to the global hash table.
+ ABFD is the BFD the symbol comes from.
+ NAME is the name of the symbol.
+ FLAGS is the BSF_* bits associated with the symbol.
+ SECTION is the section in which the symbol is defined; this may be
+ bfd_und_section_ptr or bfd_com_section_ptr.
+ VALUE is the value of the symbol, relative to the section.
+ STRING is used for either an indirect symbol, in which case it is
+ the name of the symbol to indirect to, or a warning symbol, in
+ which case it is the warning string.
+ COPY is true if NAME or STRING must be copied into locally
+ allocated memory if they need to be saved.
+ COLLECT is true if we should automatically collect gcc constructor
+ or destructor names as collect2 does.
+ HASHP, if not NULL, is a place to store the created hash table
+ entry; if *HASHP is not NULL, the caller has already looked up
+ the hash table entry, and stored it in *HASHP. */
+
+boolean
+_bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value,
+ string, copy, collect, hashp)
+ struct bfd_link_info *info;
+ bfd *abfd;
+ const char *name;
+ flagword flags;
+ asection *section;
+ bfd_vma value;
+ const char *string;
+ boolean copy;
+ boolean collect;
+ struct bfd_link_hash_entry **hashp;
+{
+ enum link_row row;
+ struct bfd_link_hash_entry *h;
+ boolean cycle;
+
+ if (bfd_is_ind_section (section)
+ || (flags & BSF_INDIRECT) != 0)
+ row = INDR_ROW;
+ else if ((flags & BSF_WARNING) != 0)
+ row = WARN_ROW;
+ else if ((flags & BSF_CONSTRUCTOR) != 0)
+ row = SET_ROW;
+ else if (bfd_is_und_section (section))
+ {
+ if ((flags & BSF_WEAK) != 0)
+ row = UNDEFW_ROW;
+ else
+ row = UNDEF_ROW;
+ }
+ else if ((flags & BSF_WEAK) != 0)
+ row = DEFW_ROW;
+ else if (bfd_is_com_section (section))
+ row = COMMON_ROW;
+ else
+ row = DEF_ROW;
+
+ if (hashp != NULL && *hashp != NULL)
+ {
+ h = *hashp;
+ BFD_ASSERT (strcmp (h->root.string, name) == 0);
+ }
+ else
+ {
+ h = bfd_link_hash_lookup (info->hash, name, true, copy, false);
+ if (h == NULL)
+ {
+ if (hashp != NULL)
+ *hashp = NULL;
+ return false;
+ }
+ }
+
+ if (info->notice_hash != (struct bfd_hash_table *) NULL
+ && (bfd_hash_lookup (info->notice_hash, name, false, false)
+ != (struct bfd_hash_entry *) NULL))
+ {
+ if (! (*info->callbacks->notice) (info, name, abfd, section, value))
+ return false;
+ }
+
+ if (hashp != (struct bfd_link_hash_entry **) NULL)
+ *hashp = h;
+
+ do
+ {
+ enum link_action action;
+
+ cycle = false;
+ action = link_action[(int) row][(int) h->type];
+ switch (action)
+ {
+ case FAIL:
+ abort ();
+
+ case NOACT:
+ /* Do nothing. */
+ break;
+
+ case UND:
+ /* Make a new undefined symbol. */
+ h->type = bfd_link_hash_undefined;
+ h->u.undef.abfd = abfd;
+ bfd_link_add_undef (info->hash, h);
+ break;
+
+ case WEAK:
+ /* Make a new weak undefined symbol. */
+ h->type = bfd_link_hash_weak;
+ h->u.undef.abfd = abfd;
+ break;
+
+ case CDEF:
+ /* We have found a definition for a symbol which was
+ previously common. */
+ BFD_ASSERT (h->type == bfd_link_hash_common);
+ if (! ((*info->callbacks->multiple_common)
+ (info, name,
+ h->u.c.section->owner, bfd_link_hash_common, h->u.c.size,
+ abfd, bfd_link_hash_defined, (bfd_vma) 0)))
+ return false;
+ /* Fall through. */
+ case DEF:
+ /* Define a symbol. */
+ h->type = bfd_link_hash_defined;
+ h->u.def.section = section;
+ h->u.def.value = value;
+
+ /* If we have been asked to, we act like collect2 and
+ identify all functions that might be global constructors
+ and destructors and pass them up in a callback. We only
+ do this for certain object file types, since many object
+ file types can handle this automatically. */
+ if (collect && name[0] == '_')
+ {
+ const char *s;
+
+ /* A constructor or destructor name starts like this:
+ _+GLOBAL_[_.$][ID][_.$]
+ where the first [_.$] and the second are the same
+ character (we accept any character there, in case a
+ new object file format comes along with even worse
+ naming restrictions). */
+
+#define CONS_PREFIX "GLOBAL_"
+#define CONS_PREFIX_LEN (sizeof CONS_PREFIX - 1)
+
+ s = name + 1;
+ while (*s == '_')
+ ++s;
+ if (s[0] == 'G'
+ && strncmp (s, CONS_PREFIX, CONS_PREFIX_LEN - 1) == 0)
+ {
+ char c;
+
+ c = s[CONS_PREFIX_LEN + 1];
+ if ((c == 'I' || c == 'D')
+ && s[CONS_PREFIX_LEN] == s[CONS_PREFIX_LEN + 2])
+ {
+ if (! ((*info->callbacks->constructor)
+ (info,
+ c == 'I' ? true : false,
+ name, abfd, section, value)))
+ return false;
+ }
+ }
+ }
+
+ break;
+
+ case COM:
+ /* We have found a common definition for a symbol. */
+ if (h->type == bfd_link_hash_new)
+ bfd_link_add_undef (info->hash, h);
+ h->type = bfd_link_hash_common;
+ h->u.c.size = value;
+ if (section == bfd_com_section_ptr)
+ {
+ h->u.c.section = bfd_make_section_old_way (abfd, "COMMON");
+ h->u.c.section->flags = SEC_ALLOC;
+ }
+ else if (section->owner != abfd)
+ {
+ h->u.c.section = bfd_make_section_old_way (abfd, section->name);
+ h->u.c.section->flags = SEC_ALLOC;
+ }
+ else
+ h->u.c.section = section;
+ break;
+
+ case REF:
+ /* A reference to a defined symbol. */
+ if (h->next == NULL && info->hash->undefs_tail != h)
+ h->next = h;
+ break;
+
+ case BIG:
+ /* We have found a common definition for a symbol which
+ already had a common definition. Use the maximum of the
+ two sizes. */
+ BFD_ASSERT (h->type == bfd_link_hash_common);
+ if (! ((*info->callbacks->multiple_common)
+ (info, name,
+ h->u.c.section->owner, bfd_link_hash_common, h->u.c.size,
+ abfd, bfd_link_hash_common, value)))
+ return false;
+ if (value > h->u.c.size)
+ h->u.c.size = value;
+ break;
+
+ case CREF:
+ /* We have found a common definition for a symbol which was
+ already defined. */
+ BFD_ASSERT (h->type == bfd_link_hash_defined);
+ if (! ((*info->callbacks->multiple_common)
+ (info, name,
+ h->u.def.section->owner, bfd_link_hash_defined, (bfd_vma) 0,
+ abfd, bfd_link_hash_common, value)))
+ return false;
+ break;
+
+ case MIND:
+ /* Multiple indirect symbols. This is OK if they both point
+ to the same symbol. */
+ if (strcmp (h->u.i.link->root.string, string) == 0)
+ break;
+ /* Fall through. */
+ case MDEF:
+ /* Handle a multiple definition. */
+ {
+ asection *msec;
+ bfd_vma mval;
+
+ switch (h->type)
+ {
+ case bfd_link_hash_defined:
+ msec = h->u.def.section;
+ mval = h->u.def.value;
+ break;
+ case bfd_link_hash_common:
+ msec = bfd_com_section_ptr;
+ mval = h->u.c.size;
+ break;
+ case bfd_link_hash_indirect:
+ msec = bfd_ind_section_ptr;
+ mval = 0;
+ break;
+ default:
+ abort ();
+ }
+
+ if (! ((*info->callbacks->multiple_definition)
+ (info, name, msec->owner, msec, mval, abfd, section,
+ value)))
+ return false;
+ }
+ break;
+
+ case IND:
+ /* Create an indirect symbol. */
+ {
+ struct bfd_link_hash_entry *inh;
+
+ /* STRING is the name of the symbol we want to indirect
+ to. */
+ inh = bfd_link_hash_lookup (info->hash, string, true, copy,
+ false);
+ if (inh == (struct bfd_link_hash_entry *) NULL)
+ return false;
+ if (inh->type == bfd_link_hash_new)
+ {
+ inh->type = bfd_link_hash_undefined;
+ inh->u.undef.abfd = abfd;
+ bfd_link_add_undef (info->hash, inh);
+ }
+
+ /* If the indirect symbol has been referenced, we need to
+ push the reference down to the symbol we are
+ referencing. */
+ if (h->type != bfd_link_hash_new)
+ {
+ row = UNDEF_ROW;
+ cycle = true;
+ }
+
+ h->type = bfd_link_hash_indirect;
+ h->u.i.link = inh;
+ }
+ break;
+
+ case SET:
+ /* Add an entry to a set. */
+ if (! (*info->callbacks->add_to_set) (info, h, BFD_RELOC_CTOR,
+ abfd, section, value))
+ return false;
+ break;
+
+ case WARNC:
+ /* Issue a warning and cycle. */
+ if (h->u.i.warning != NULL)
+ {
+ if (! (*info->callbacks->warning) (info, h->u.i.warning))
+ return false;
+ /* Only issue a warning once. */
+ h->u.i.warning = NULL;
+ }
+ /* Fall through. */
+ case CYCLE:
+ /* Try again with the referenced symbol. */
+ h = h->u.i.link;
+ cycle = true;
+ break;
+
+ case REFC:
+ /* A reference to an indirect symbol. */
+ if (h->next == NULL && info->hash->undefs_tail != h)
+ h->next = h;
+ h = h->u.i.link;
+ cycle = true;
+ break;
+
+ case WARN:
+ /* Issue a warning. */
+ if (! (*info->callbacks->warning) (info, string))
+ return false;
+ break;
+
+ case CWARN:
+ /* Warn if this symbol has been referenced already,
+ otherwise either add a warning or cycle. A symbol has
+ been referenced if the next field is not NULL, or it is
+ the tail of the undefined symbol list. The REF case
+ above helps to ensure this. */
+ if (h->next != NULL || info->hash->undefs_tail == h)
+ {
+ if (! (*info->callbacks->warning) (info, string))
+ return false;
+ break;
+ }
+ /* Fall through. */
+ case MWARN:
+ /* Make a warning symbol. */
+ {
+ struct bfd_link_hash_entry *sub;
+
+ /* STRING is the warning to give. */
+ sub = ((struct bfd_link_hash_entry *)
+ bfd_hash_allocate (&info->hash->table,
+ sizeof (struct bfd_link_hash_entry)));
+ if (!sub)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ *sub = *h;
+ h->type = bfd_link_hash_warning;
+ h->u.i.link = sub;
+ if (! copy)
+ h->u.i.warning = string;
+ else
+ {
+ char *w;
+
+ w = bfd_hash_allocate (&info->hash->table,
+ strlen (string) + 1);
+ strcpy (w, string);
+ h->u.i.warning = w;
+ }
+ }
+ break;
+ }
+ }
+ while (cycle);
+
+ return true;
+}
+
+/* Generic final link routine. */
+
+boolean
+_bfd_generic_final_link (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ bfd *sub;
+ asection *o;
+ struct bfd_link_order *p;
+ size_t outsymalloc;
+ struct generic_write_global_symbol_info wginfo;
+
+ abfd->outsymbols = (asymbol **) NULL;
+ abfd->symcount = 0;
+ outsymalloc = 0;
+
+ /* Build the output symbol table. */
+ for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
+ if (! _bfd_generic_link_output_symbols (abfd, sub, info, &outsymalloc))
+ return false;
+
+ /* Accumulate the global symbols. */
+ wginfo.info = info;
+ wginfo.output_bfd = abfd;
+ wginfo.psymalloc = &outsymalloc;
+ _bfd_generic_link_hash_traverse (_bfd_generic_hash_table (info),
+ _bfd_generic_link_write_global_symbol,
+ (PTR) &wginfo);
+
+ if (info->relocateable)
+ {
+ /* Allocate space for the output relocs for each section. */
+ for (o = abfd->sections;
+ o != (asection *) NULL;
+ o = o->next)
+ {
+ o->reloc_count = 0;
+ for (p = o->link_order_head;
+ p != (struct bfd_link_order *) NULL;
+ p = p->next)
+ {
+ if (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order)
+ ++o->reloc_count;
+ else if (p->type == bfd_indirect_link_order)
+ {
+ asection *input_section;
+ bfd *input_bfd;
+ long relsize;
+ arelent **relocs;
+ asymbol **symbols;
+ long reloc_count;
+
+ input_section = p->u.indirect.section;
+ input_bfd = input_section->owner;
+ relsize = bfd_get_reloc_upper_bound (input_bfd,
+ input_section);
+ if (relsize < 0)
+ return false;
+ relocs = (arelent **) malloc ((size_t) relsize);
+ if (!relocs && relsize != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ symbols = _bfd_generic_link_get_symbols (input_bfd);
+ reloc_count = bfd_canonicalize_reloc (input_bfd,
+ input_section,
+ relocs,
+ symbols);
+ if (reloc_count < 0)
+ return false;
+ BFD_ASSERT (reloc_count == input_section->reloc_count);
+ o->reloc_count += reloc_count;
+ free (relocs);
+ }
+ }
+ if (o->reloc_count > 0)
+ {
+ o->orelocation = ((arelent **)
+ bfd_alloc (abfd,
+ (o->reloc_count
+ * sizeof (arelent *))));
+ if (!o->orelocation)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ o->flags |= SEC_RELOC;
+ /* Reset the count so that it can be used as an index
+ when putting in the output relocs. */
+ o->reloc_count = 0;
+ }
+ }
+ }
+
+ /* Handle all the link order information for the sections. */
+ for (o = abfd->sections;
+ o != (asection *) NULL;
+ o = o->next)
+ {
+ for (p = o->link_order_head;
+ p != (struct bfd_link_order *) NULL;
+ p = p->next)
+ {
+ switch (p->type)
+ {
+ case bfd_section_reloc_link_order:
+ case bfd_symbol_reloc_link_order:
+ if (! _bfd_generic_reloc_link_order (abfd, info, o, p))
+ return false;
+ break;
+ default:
+ if (! _bfd_default_link_order (abfd, info, o, p))
+ return false;
+ break;
+ }
+ }
+ }
+
+ return true;
+}
+
+/* Add an output symbol to the output BFD. */
+
+static boolean
+generic_add_output_symbol (output_bfd, psymalloc, sym)
+ bfd *output_bfd;
+ size_t *psymalloc;
+ asymbol *sym;
+{
+ if (output_bfd->symcount >= *psymalloc)
+ {
+ asymbol **newsyms;
+
+ if (*psymalloc == 0)
+ *psymalloc = 124;
+ else
+ *psymalloc *= 2;
+ if (output_bfd->outsymbols == (asymbol **) NULL)
+ newsyms = (asymbol **) malloc (*psymalloc * sizeof (asymbol *));
+ else
+ newsyms = (asymbol **) realloc (output_bfd->outsymbols,
+ *psymalloc * sizeof (asymbol *));
+ if (newsyms == (asymbol **) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ output_bfd->outsymbols = newsyms;
+ }
+
+ output_bfd->outsymbols[output_bfd->symcount] = sym;
+ ++output_bfd->symcount;
+
+ return true;
+}
+
+/* Handle the symbols for an input BFD. */
+
+boolean
+_bfd_generic_link_output_symbols (output_bfd, input_bfd, info, psymalloc)
+ bfd *output_bfd;
+ bfd *input_bfd;
+ struct bfd_link_info *info;
+ size_t *psymalloc;
+{
+ asymbol **sym_ptr;
+ asymbol **sym_end;
+
+ if (! generic_link_read_symbols (input_bfd))
+ return false;
+
+ /* Create a filename symbol if we are supposed to. */
+ if (info->create_object_symbols_section != (asection *) NULL)
+ {
+ asection *sec;
+
+ for (sec = input_bfd->sections;
+ sec != (asection *) NULL;
+ sec = sec->next)
+ {
+ if (sec->output_section == info->create_object_symbols_section)
+ {
+ asymbol *newsym;
+
+ newsym = bfd_make_empty_symbol (input_bfd);
+ if (!newsym)
+ return false;
+ newsym->name = input_bfd->filename;
+ newsym->value = 0;
+ newsym->flags = BSF_LOCAL | BSF_FILE;
+ newsym->section = sec;
+
+ if (! generic_add_output_symbol (output_bfd, psymalloc,
+ newsym))
+ return false;
+
+ break;
+ }
+ }
+ }
+
+ /* Adjust the values of the globally visible symbols, and write out
+ local symbols. */
+ sym_ptr = _bfd_generic_link_get_symbols (input_bfd);
+ sym_end = sym_ptr + _bfd_generic_link_get_symcount (input_bfd);
+ for (; sym_ptr < sym_end; sym_ptr++)
+ {
+ asymbol *sym;
+ struct generic_link_hash_entry *h;
+ boolean output;
+
+ h = (struct generic_link_hash_entry *) NULL;
+ sym = *sym_ptr;
+ if ((sym->flags & (BSF_INDIRECT
+ | BSF_WARNING
+ | BSF_GLOBAL
+ | BSF_CONSTRUCTOR
+ | BSF_WEAK)) != 0
+ || bfd_is_und_section (bfd_get_section (sym))
+ || bfd_is_com_section (bfd_get_section (sym))
+ || bfd_is_ind_section (bfd_get_section (sym)))
+ {
+ h = _bfd_generic_link_hash_lookup (_bfd_generic_hash_table (info),
+ bfd_asymbol_name (sym),
+ false, false, true);
+ if (h != (struct generic_link_hash_entry *) NULL)
+ {
+ /* Force all references to this symbol to point to
+ the same area in memory. It is possible that
+ this routine will be called with a hash table
+ other than a generic hash table, so we double
+ check that. */
+ if (info->hash->creator == input_bfd->xvec)
+ {
+ if (h->sym != (asymbol *) NULL)
+ *sym_ptr = sym = h->sym;
+ }
+
+ switch (h->root.type)
+ {
+ default:
+ case bfd_link_hash_new:
+ abort ();
+ case bfd_link_hash_undefined:
+ case bfd_link_hash_weak:
+ break;
+ case bfd_link_hash_defined:
+ sym->value = h->root.u.def.value;
+ sym->section = h->root.u.def.section;
+ sym->flags |= BSF_GLOBAL;
+ break;
+ case bfd_link_hash_common:
+ sym->value = h->root.u.c.size;
+ sym->flags |= BSF_GLOBAL;
+ if (! bfd_is_com_section (sym->section))
+ {
+ BFD_ASSERT (bfd_is_und_section (sym->section));
+ sym->section = bfd_com_section_ptr;
+ }
+ /* We do not set the section of the symbol to
+ h->root.u.c.section. That value was saved so
+ that we would know where to allocate the symbol
+ if it was defined. In this case the type is
+ still bfd_link_hash_common, so we did not define
+ it, so we do not want to use that section. */
+ break;
+ }
+ }
+ }
+
+ /* This switch is straight from the old code in
+ write_file_locals in ldsym.c. */
+ if (info->strip == strip_some
+ && (bfd_hash_lookup (info->keep_hash, bfd_asymbol_name (sym),
+ false, false)
+ == (struct bfd_hash_entry *) NULL))
+ output = false;
+ else if ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0)
+ {
+ /* If this symbol is marked as occurring now, rather
+ than at the end, output it now. This is used for
+ COFF C_EXT FCN symbols. FIXME: There must be a
+ better way. */
+ if (bfd_asymbol_bfd (sym) == input_bfd
+ && (sym->flags & BSF_NOT_AT_END) != 0)
+ output = true;
+ else
+ output = false;
+ }
+ else if (bfd_is_ind_section (sym->section))
+ output = false;
+ else if ((sym->flags & BSF_DEBUGGING) != 0)
+ {
+ if (info->strip == strip_none)
+ output = true;
+ else
+ output = false;
+ }
+ else if (bfd_is_und_section (sym->section)
+ || bfd_is_com_section (sym->section))
+ output = false;
+ else if ((sym->flags & BSF_LOCAL) != 0)
+ {
+ if ((sym->flags & BSF_WARNING) != 0)
+ output = false;
+ else
+ {
+ switch (info->discard)
+ {
+ default:
+ case discard_all:
+ output = false;
+ break;
+ case discard_l:
+ if (bfd_asymbol_name (sym)[0] == info->lprefix[0]
+ && (info->lprefix_len == 1
+ || strncmp (bfd_asymbol_name (sym), info->lprefix,
+ info->lprefix_len) == 0))
+ output = false;
+ else
+ output = true;
+ break;
+ case discard_none:
+ output = true;
+ break;
+ }
+ }
+ }
+ else if ((sym->flags & BSF_CONSTRUCTOR))
+ {
+ if (info->strip != strip_all)
+ output = true;
+ else
+ output = false;
+ }
+ else
+ abort ();
+
+ if (output)
+ {
+ if (! generic_add_output_symbol (output_bfd, psymalloc, sym))
+ return false;
+ if (h != (struct generic_link_hash_entry *) NULL)
+ h->written = true;
+ }
+ }
+
+ return true;
+}
+
+/* Write out a global symbol, if it hasn't already been written out.
+ This is called for each symbol in the hash table. */
+
+boolean
+_bfd_generic_link_write_global_symbol (h, data)
+ struct generic_link_hash_entry *h;
+ PTR data;
+{
+ struct generic_write_global_symbol_info *wginfo =
+ (struct generic_write_global_symbol_info *) data;
+ asymbol *sym;
+
+ if (h->written)
+ return true;
+
+ h->written = true;
+
+ if (wginfo->info->strip == strip_all
+ || (wginfo->info->strip == strip_some
+ && bfd_hash_lookup (wginfo->info->keep_hash, h->root.root.string,
+ false, false) == NULL))
+ return true;
+
+ if (h->sym != (asymbol *) NULL)
+ {
+ sym = h->sym;
+ BFD_ASSERT (strcmp (bfd_asymbol_name (sym), h->root.root.string) == 0);
+ }
+ else
+ {
+ sym = bfd_make_empty_symbol (wginfo->output_bfd);
+ if (!sym)
+ return false;
+ sym->name = h->root.root.string;
+ sym->flags = 0;
+ }
+
+ switch (h->root.type)
+ {
+ default:
+ case bfd_link_hash_new:
+ abort ();
+ case bfd_link_hash_undefined:
+ sym->section = bfd_und_section_ptr;
+ sym->value = 0;
+ break;
+ case bfd_link_hash_weak:
+ sym->section = bfd_und_section_ptr;
+ sym->value = 0;
+ sym->flags |= BSF_WEAK;
+ break;
+ case bfd_link_hash_defined:
+ sym->section = h->root.u.def.section;
+ sym->value = h->root.u.def.value;
+ break;
+ case bfd_link_hash_common:
+ sym->value = h->root.u.c.size;
+ if (sym->section == NULL)
+ sym->section = bfd_com_section_ptr;
+ else if (! bfd_is_com_section (sym->section))
+ {
+ BFD_ASSERT (bfd_is_und_section (sym->section));
+ sym->section = bfd_com_section_ptr;
+ }
+ /* Do not set the section; see _bfd_generic_link_output_symbols. */
+ break;
+ case bfd_link_hash_indirect:
+ case bfd_link_hash_warning:
+ /* FIXME: What should we do here? */
+ break;
+ }
+
+ sym->flags |= BSF_GLOBAL;
+
+ if (! generic_add_output_symbol (wginfo->output_bfd, wginfo->psymalloc,
+ sym))
+ {
+ /* FIXME: No way to return failure. */
+ abort ();
+ }
+
+ return true;
+}
+
+/* Create a relocation. */
+
+boolean
+_bfd_generic_reloc_link_order (abfd, info, sec, link_order)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ struct bfd_link_order *link_order;
+{
+ arelent *r;
+
+ if (! info->relocateable)
+ abort ();
+ if (sec->orelocation == (arelent **) NULL)
+ abort ();
+
+ r = (arelent *) bfd_alloc (abfd, sizeof (arelent));
+ if (r == (arelent *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ r->address = link_order->offset;
+ r->howto = bfd_reloc_type_lookup (abfd, link_order->u.reloc.p->reloc);
+ if (r->howto == (const reloc_howto_type *) NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ /* Get the symbol to use for the relocation. */
+ if (link_order->type == bfd_section_reloc_link_order)
+ r->sym_ptr_ptr = link_order->u.reloc.p->u.section->symbol_ptr_ptr;
+ else
+ {
+ struct generic_link_hash_entry *h;
+
+ h = _bfd_generic_link_hash_lookup (_bfd_generic_hash_table (info),
+ link_order->u.reloc.p->u.name,
+ false, false, true);
+ if (h == (struct generic_link_hash_entry *) NULL
+ || ! h->written)
+ {
+ if (! ((*info->callbacks->unattached_reloc)
+ (info, link_order->u.reloc.p->u.name,
+ (bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
+ return false;
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ r->sym_ptr_ptr = &h->sym;
+ }
+
+ /* If this is an inplace reloc, write the addend to the object file.
+ Otherwise, store it in the reloc addend. */
+ if (! r->howto->partial_inplace)
+ r->addend = link_order->u.reloc.p->addend;
+ else
+ {
+ bfd_size_type size;
+ bfd_reloc_status_type rstat;
+ bfd_byte *buf;
+ boolean ok;
+
+ size = bfd_get_reloc_size (r->howto);
+ buf = (bfd_byte *) bfd_zmalloc (size);
+ if (buf == (bfd_byte *) NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ rstat = _bfd_relocate_contents (r->howto, abfd,
+ link_order->u.reloc.p->addend, buf);
+ switch (rstat)
+ {
+ case bfd_reloc_ok:
+ break;
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+ case bfd_reloc_overflow:
+ if (! ((*info->callbacks->reloc_overflow)
+ (info,
+ (link_order->type == bfd_section_reloc_link_order
+ ? bfd_section_name (abfd, link_order->u.reloc.p->u.section)
+ : link_order->u.reloc.p->u.name),
+ r->howto->name, link_order->u.reloc.p->addend,
+ (bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
+ {
+ free (buf);
+ return false;
+ }
+ break;
+ }
+ ok = bfd_set_section_contents (abfd, sec, (PTR) buf,
+ (file_ptr) link_order->offset, size);
+ free (buf);
+ if (! ok)
+ return false;
+
+ r->addend = 0;
+ }
+
+ sec->orelocation[sec->reloc_count] = r;
+ ++sec->reloc_count;
+
+ return true;
+}
+
+/* Allocate a new link_order for a section. */
+
+struct bfd_link_order *
+bfd_new_link_order (abfd, section)
+ bfd *abfd;
+ asection *section;
+{
+ struct bfd_link_order *new;
+
+ new = ((struct bfd_link_order *)
+ bfd_alloc_by_size_t (abfd, sizeof (struct bfd_link_order)));
+ if (!new)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+
+ new->type = bfd_undefined_link_order;
+ new->offset = 0;
+ new->size = 0;
+ new->next = (struct bfd_link_order *) NULL;
+
+ if (section->link_order_tail != (struct bfd_link_order *) NULL)
+ section->link_order_tail->next = new;
+ else
+ section->link_order_head = new;
+ section->link_order_tail = new;
+
+ return new;
+}
+
+/* Default link order processing routine. Note that we can not handle
+ the reloc_link_order types here, since they depend upon the details
+ of how the particular backends generates relocs. */
+
+boolean
+_bfd_default_link_order (abfd, info, sec, link_order)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ struct bfd_link_order *link_order;
+{
+ switch (link_order->type)
+ {
+ case bfd_undefined_link_order:
+ case bfd_section_reloc_link_order:
+ case bfd_symbol_reloc_link_order:
+ default:
+ abort ();
+ case bfd_indirect_link_order:
+ return default_indirect_link_order (abfd, info, sec, link_order);
+ case bfd_fill_link_order:
+ return default_fill_link_order (abfd, info, sec, link_order);
+ case bfd_data_link_order:
+ return bfd_set_section_contents (abfd, sec,
+ (PTR) link_order->u.data.contents,
+ (file_ptr) link_order->offset,
+ link_order->size);
+ }
+}
+
+/* Default routine to handle a bfd_fill_link_order. */
+
+/*ARGSUSED*/
+static boolean
+default_fill_link_order (abfd, info, sec, link_order)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ struct bfd_link_order *link_order;
+{
+ size_t size;
+ char *space;
+ size_t i;
+ int fill;
+ boolean result;
+
+ BFD_ASSERT ((sec->flags & SEC_HAS_CONTENTS) != 0);
+
+ size = (size_t) link_order->size;
+ space = (char *) malloc (size);
+ if (space == NULL && size != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+
+ fill = link_order->u.fill.value;
+ for (i = 0; i < size; i += 2)
+ space[i] = fill >> 8;
+ for (i = 1; i < size; i += 2)
+ space[i] = fill;
+ result = bfd_set_section_contents (abfd, sec, space,
+ (file_ptr) link_order->offset,
+ link_order->size);
+ free (space);
+ return result;
+}
+
+/* Default routine to handle a bfd_indirect_link_order. */
+
+static boolean
+default_indirect_link_order (output_bfd, info, output_section, link_order)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ asection *output_section;
+ struct bfd_link_order *link_order;
+{
+ asection *input_section;
+ bfd *input_bfd;
+ bfd_byte *contents = NULL;
+ bfd_byte *new_contents;
+
+ BFD_ASSERT ((output_section->flags & SEC_HAS_CONTENTS) != 0);
+
+ if (link_order->size == 0)
+ return true;
+
+ input_section = link_order->u.indirect.section;
+ input_bfd = input_section->owner;
+
+ BFD_ASSERT (input_section->output_section == output_section);
+ BFD_ASSERT (input_section->output_offset == link_order->offset);
+ BFD_ASSERT (input_section->_cooked_size == link_order->size);
+
+ if (info->relocateable
+ && input_section->reloc_count > 0
+ && output_section->orelocation == (arelent **) NULL)
+ {
+ /* Space has not been allocated for the output relocations.
+ This can happen when we are called by a specific backend
+ because somebody is attempting to link together different
+ types of object files. Handling this case correctly is
+ difficult, and sometimes impossible. */
+ abort ();
+ }
+
+ /* Get the canonical symbols. The generic linker will always have
+ retrieved them by this point, but we may be being called by a
+ specific linker when linking different types of object files
+ together. */
+ if (! generic_link_read_symbols (input_bfd))
+ return false;
+
+ /* Get and relocate the section contents. */
+ contents = (bfd_byte *) malloc (bfd_section_size (input_bfd, input_section));
+ if (contents == NULL && bfd_section_size (input_bfd, input_section) != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ new_contents = (bfd_get_relocated_section_contents
+ (output_bfd, info, link_order, contents, info->relocateable,
+ _bfd_generic_link_get_symbols (input_bfd)));
+ if (!new_contents)
+ goto error_return;
+
+ /* Output the section contents. */
+ if (! bfd_set_section_contents (output_bfd, output_section,
+ (PTR) new_contents,
+ link_order->offset, link_order->size))
+ goto error_return;
+
+ if (contents != NULL)
+ free (contents);
+ return true;
+
+ error_return:
+ if (contents != NULL)
+ free (contents);
+ return false;
+}
+
+/* A little routine to count the number of relocs in a link_order
+ list. */
+
+unsigned int
+_bfd_count_link_order_relocs (link_order)
+ struct bfd_link_order *link_order;
+{
+ register unsigned int c;
+ register struct bfd_link_order *l;
+
+ c = 0;
+ for (l = link_order; l != (struct bfd_link_order *) NULL; l = l->next)
+ {
+ if (l->type == bfd_section_reloc_link_order
+ || l->type == bfd_symbol_reloc_link_order)
+ ++c;
+ }
+
+ return c;
+}