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Diffstat (limited to 'contrib/gcc/config/alpha/elf.h')
| -rw-r--r-- | contrib/gcc/config/alpha/elf.h | 534 |
1 files changed, 0 insertions, 534 deletions
diff --git a/contrib/gcc/config/alpha/elf.h b/contrib/gcc/config/alpha/elf.h deleted file mode 100644 index 6cea3da5d5b4..000000000000 --- a/contrib/gcc/config/alpha/elf.h +++ /dev/null @@ -1,534 +0,0 @@ -/* Definitions of target machine for GNU compiler, for DEC Alpha w/ELF. - Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. - Contributed by Richard Henderson (rth@tamu.edu). - -This file is part of GNU CC. - -GNU CC 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, or (at your option) -any later version. - -GNU CC 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 GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#undef OBJECT_FORMAT_COFF -#undef EXTENDED_COFF -#define OBJECT_FORMAT_ELF - -#define DBX_DEBUGGING_INFO -#define DWARF2_DEBUGGING_INFO - -#undef PREFERRED_DEBUGGING_TYPE -#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG - -#undef ASM_FINAL_SPEC - -#undef CC1_SPEC -#define CC1_SPEC "%{G*}" - -#undef ASM_SPEC -#define ASM_SPEC "%{G*} %{relax:-relax} %{gdwarf*:-no-mdebug}" - -#undef LINK_SPEC -#define LINK_SPEC "-m elf64alpha %{G*} %{relax:-relax} \ - %{O*:-O3} %{!O*:-O1} \ - %{shared:-shared} \ - %{!shared: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - %{!dynamic-linker:-dynamic-linker %(elf_dynamic_linker)}} \ - %{static:-static}}" - -/* Output at beginning of assembler file. */ -#undef ASM_FILE_START -#define ASM_FILE_START(FILE) \ -do { \ - if (write_symbols != DWARF2_DEBUG) \ - { \ - alpha_write_verstamp (FILE); \ - output_file_directive (FILE, main_input_filename); \ - } \ - fprintf (FILE, "\t.set noat\n"); \ - fprintf (FILE, "\t.set noreorder\n"); \ - if (TARGET_BWX | TARGET_MAX | TARGET_FIX | TARGET_CIX) \ - { \ - fprintf (FILE, "\t.arch %s\n", \ - (alpha_cpu == PROCESSOR_EV6 ? "ev6" \ - : TARGET_MAX ? "pca56" : "ev56")); \ - } \ -} while (0) - -extern void output_file_directive (); - -/* Attach a special .ident directive to the end of the file to identify - the version of GCC which compiled this code. The format of the - .ident string is patterned after the ones produced by native svr4 - C compilers. */ - -#define IDENT_ASM_OP ".ident" - -#ifdef IDENTIFY_WITH_IDENT -#define ASM_IDENTIFY_GCC(FILE) /* nothing */ -#define ASM_IDENTIFY_LANGUAGE(FILE) \ - fprintf(FILE, "\t%s \"GCC (%s) %s\"\n", IDENT_ASM_OP, \ - lang_identify(), version_string) -#else -#define ASM_FILE_END(FILE) \ -do { \ - if (!flag_no_ident) \ - fprintf ((FILE), "\t%s\t\"GCC: (GNU) %s\"\n", \ - IDENT_ASM_OP, version_string); \ - } while (0) -#endif - -/* Allow #sccs in preprocessor. */ -#define SCCS_DIRECTIVE - -/* Output #ident as a .ident. */ -#define ASM_OUTPUT_IDENT(FILE, NAME) \ - fprintf (FILE, "\t%s\t\"%s\"\n", IDENT_ASM_OP, NAME); - -/* This is how to allocate empty space in some section. The .zero - pseudo-op is used for this on most svr4 assemblers. */ - -#define SKIP_ASM_OP ".zero" - -#undef ASM_OUTPUT_SKIP -#define ASM_OUTPUT_SKIP(FILE,SIZE) \ - fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE)) - -/* Output the label which precedes a jumptable. Note that for all svr4 - systems where we actually generate jumptables (which is to say every - svr4 target except i386, where we use casesi instead) we put the jump- - tables into the .rodata section and since other stuff could have been - put into the .rodata section prior to any given jumptable, we have to - make sure that the location counter for the .rodata section gets pro- - perly re-aligned prior to the actual beginning of the jump table. */ - -#define ALIGN_ASM_OP ".align" - -#ifndef ASM_OUTPUT_BEFORE_CASE_LABEL -#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \ - ASM_OUTPUT_ALIGN ((FILE), 2); -#endif - -#undef ASM_OUTPUT_CASE_LABEL -#define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,JUMPTABLE) \ - do { \ - ASM_OUTPUT_BEFORE_CASE_LABEL (FILE, PREFIX, NUM, JUMPTABLE) \ - ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \ - } while (0) - -/* The standard SVR4 assembler seems to require that certain builtin - library routines (e.g. .udiv) be explicitly declared as .globl - in each assembly file where they are referenced. */ - -#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ - ASM_GLOBALIZE_LABEL (FILE, XSTR (FUN, 0)) - -/* This says how to output assembler code to declare an - uninitialized external linkage data object. Under SVR4, - the linker seems to want the alignment of data objects - to depend on their types. We do exactly that here. */ - -#define COMMON_ASM_OP ".comm" - -#undef ASM_OUTPUT_ALIGNED_COMMON -#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \ -do { \ - fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \ - assemble_name ((FILE), (NAME)); \ - fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \ -} while (0) - -/* This says how to output assembler code to declare an - uninitialized internal linkage data object. Under SVR4, - the linker seems to want the alignment of data objects - to depend on their types. We do exactly that here. */ - -#undef ASM_OUTPUT_ALIGNED_LOCAL -#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ -do { \ - if ((SIZE) <= g_switch_value) \ - sbss_section(); \ - else \ - bss_section(); \ - fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ - assemble_name (FILE, NAME); \ - putc (',', FILE); \ - fprintf (FILE, TYPE_OPERAND_FMT, "object"); \ - putc ('\n', FILE); \ - if (!flag_inhibit_size_directive) \ - { \ - fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ - assemble_name (FILE, NAME); \ - fprintf (FILE, ",%d\n", (SIZE)); \ - } \ - ASM_OUTPUT_ALIGN ((FILE), exact_log2((ALIGN) / BITS_PER_UNIT)); \ - ASM_OUTPUT_LABEL(FILE, NAME); \ - ASM_OUTPUT_SKIP((FILE), (SIZE)); \ -} while (0) - -/* This is the pseudo-op used to generate a 64-bit word of data with a - specific value in some section. */ - -#define INT_ASM_OP ".quad" - -/* Biggest alignment supported by the object file format of this - machine. Use this macro to limit the alignment which can be - specified using the `__attribute__ ((aligned (N)))' construct. If - not defined, the default value is `BIGGEST_ALIGNMENT'. - - This value is really 2^63. Since gcc figures the alignment in bits, - we could only potentially get to 2^60 on suitible hosts. Due to other - considerations in varasm, we must restrict this to what fits in an int. */ - -#define MAX_OFILE_ALIGNMENT \ - (1 << (HOST_BITS_PER_INT < 64 ? HOST_BITS_PER_INT - 2 : 62)) - -/* This is the pseudo-op used to generate a contiguous sequence of byte - values from a double-quoted string WITHOUT HAVING A TERMINATING NUL - AUTOMATICALLY APPENDED. This is the same for most svr4 assemblers. */ - -#undef ASCII_DATA_ASM_OP -#define ASCII_DATA_ASM_OP ".ascii" - -/* Support const sections and the ctors and dtors sections for g++. - Note that there appears to be two different ways to support const - sections at the moment. You can either #define the symbol - READONLY_DATA_SECTION (giving it some code which switches to the - readonly data section) or else you can #define the symbols - EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and - SELECT_RTX_SECTION. We do both here just to be on the safe side. */ - -#define USE_CONST_SECTION 1 - -#define CONST_SECTION_ASM_OP ".section\t.rodata" - -/* Define the pseudo-ops used to switch to the .ctors and .dtors sections. - - Note that we want to give these sections the SHF_WRITE attribute - because these sections will actually contain data (i.e. tables of - addresses of functions in the current root executable or shared library - file) and, in the case of a shared library, the relocatable addresses - will have to be properly resolved/relocated (and then written into) by - the dynamic linker when it actually attaches the given shared library - to the executing process. (Note that on SVR4, you may wish to use the - `-z text' option to the ELF linker, when building a shared library, as - an additional check that you are doing everything right. But if you do - use the `-z text' option when building a shared library, you will get - errors unless the .ctors and .dtors sections are marked as writable - via the SHF_WRITE attribute.) */ - -#define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\"" -#define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\"" - -/* Handle the small data sections. */ -#define BSS_SECTION_ASM_OP ".section\t.bss" -#define SBSS_SECTION_ASM_OP ".section\t.sbss,\"aw\"" -#define SDATA_SECTION_ASM_OP ".section\t.sdata,\"aw\"" - -/* On svr4, we *do* have support for the .init and .fini sections, and we - can put stuff in there to be executed before and after `main'. We let - crtstuff.c and other files know this by defining the following symbols. - The definitions say how to change sections to the .init and .fini - sections. This is the same for all known svr4 assemblers. */ - -#define INIT_SECTION_ASM_OP ".section\t.init" -#define FINI_SECTION_ASM_OP ".section\t.fini" - -/* A default list of other sections which we might be "in" at any given - time. For targets that use additional sections (e.g. .tdesc) you - should override this definition in the target-specific file which - includes this file. */ - -#undef EXTRA_SECTIONS -#define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_sbss, in_sdata - -/* A default list of extra section function definitions. For targets - that use additional sections (e.g. .tdesc) you should override this - definition in the target-specific file which includes this file. */ - -#undef EXTRA_SECTION_FUNCTIONS -#define EXTRA_SECTION_FUNCTIONS \ - CONST_SECTION_FUNCTION \ - SECTION_FUNCTION_TEMPLATE(ctors_section, in_ctors, CTORS_SECTION_ASM_OP) \ - SECTION_FUNCTION_TEMPLATE(dtors_section, in_dtors, DTORS_SECTION_ASM_OP) \ - SECTION_FUNCTION_TEMPLATE(sbss_section, in_sbss, SBSS_SECTION_ASM_OP) \ - SECTION_FUNCTION_TEMPLATE(sdata_section, in_sdata, SDATA_SECTION_ASM_OP) - -#undef READONLY_DATA_SECTION -#define READONLY_DATA_SECTION() const_section () - -extern void text_section (); - -#define CONST_SECTION_FUNCTION \ -void \ -const_section () \ -{ \ - if (!USE_CONST_SECTION) \ - text_section(); \ - else if (in_section != in_const) \ - { \ - fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \ - in_section = in_const; \ - } \ -} - -#define SECTION_FUNCTION_TEMPLATE(FN, ENUM, OP) \ -void FN () \ -{ \ - if (in_section != ENUM) \ - { \ - fprintf (asm_out_file, "%s\n", OP); \ - in_section = ENUM; \ - } \ -} - - -/* Switch into a generic section. - This is currently only used to support section attributes. - - We make the section read-only and executable for a function decl, - read-only for a const data decl, and writable for a non-const data decl. */ -#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \ - fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, \ - (DECL) && TREE_CODE (DECL) == FUNCTION_DECL ? "ax" : \ - (DECL) && DECL_READONLY_SECTION (DECL, RELOC) ? "a" : "aw") - - -/* A C statement (sans semicolon) to output an element in the table of - global constructors. */ -#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ - do { \ - ctors_section (); \ - fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ - assemble_name (FILE, NAME); \ - fprintf (FILE, "\n"); \ - } while (0) - -/* A C statement (sans semicolon) to output an element in the table of - global destructors. */ -#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ - do { \ - dtors_section (); \ - fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ - assemble_name (FILE, NAME); \ - fprintf (FILE, "\n"); \ - } while (0) - -/* A C statement or statements to switch to the appropriate - section for output of DECL. DECL is either a `VAR_DECL' node - or a constant of some sort. RELOC indicates whether forming - the initial value of DECL requires link-time relocations. */ - -#define SELECT_SECTION(DECL,RELOC) \ -{ \ - if (TREE_CODE (DECL) == STRING_CST) \ - { \ - if (! flag_writable_strings) \ - const_section (); \ - else \ - data_section (); \ - } \ - else if (TREE_CODE (DECL) == VAR_DECL) \ - { \ - if ((flag_pic && RELOC) \ - || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \ - || !DECL_INITIAL (DECL) \ - || (DECL_INITIAL (DECL) != error_mark_node \ - && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \ - { \ - int size = int_size_in_bytes (TREE_TYPE (DECL)); \ - if (size >= 0 && size <= g_switch_value) \ - sdata_section (); \ - else \ - data_section (); \ - } \ - else \ - const_section (); \ - } \ - else \ - const_section (); \ -} - -/* A C statement or statements to switch to the appropriate - section for output of RTX in mode MODE. RTX is some kind - of constant in RTL. The argument MODE is redundant except - in the case of a `const_int' rtx. Currently, these always - go into the const section. */ - -#undef SELECT_RTX_SECTION -#define SELECT_RTX_SECTION(MODE,RTX) const_section() - -/* Define the strings used for the special svr4 .type and .size directives. - These strings generally do not vary from one system running svr4 to - another, but if a given system (e.g. m88k running svr) needs to use - different pseudo-op names for these, they may be overridden in the - file which includes this one. */ - -#define TYPE_ASM_OP ".type" -#define SIZE_ASM_OP ".size" - -/* This is how we tell the assembler that a symbol is weak. */ - -#define ASM_WEAKEN_LABEL(FILE,NAME) \ - do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \ - fputc ('\n', FILE); } while (0) - -/* This is how we tell the assembler that two symbols have the same value. */ - -#define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \ - do { assemble_name(FILE, NAME1); \ - fputs(" = ", FILE); \ - assemble_name(FILE, NAME2); \ - fputc('\n', FILE); } while (0) - -/* The following macro defines the format used to output the second - operand of the .type assembler directive. Different svr4 assemblers - expect various different forms for this operand. The one given here - is just a default. You may need to override it in your machine- - specific tm.h file (depending upon the particulars of your assembler). */ - -#define TYPE_OPERAND_FMT "@%s" - -/* Write the extra assembler code needed to declare a function's result. - Most svr4 assemblers don't require any special declaration of the - result value, but there are exceptions. */ - -#ifndef ASM_DECLARE_RESULT -#define ASM_DECLARE_RESULT(FILE, RESULT) -#endif - -/* These macros generate the special .type and .size directives which - are used to set the corresponding fields of the linker symbol table - entries in an ELF object file under SVR4. These macros also output - the starting labels for the relevant functions/objects. */ - -/* Write the extra assembler code needed to declare an object properly. */ - -#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ - do { \ - fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ - assemble_name (FILE, NAME); \ - putc (',', FILE); \ - fprintf (FILE, TYPE_OPERAND_FMT, "object"); \ - putc ('\n', FILE); \ - size_directive_output = 0; \ - if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \ - { \ - size_directive_output = 1; \ - fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ - assemble_name (FILE, NAME); \ - fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \ - } \ - ASM_OUTPUT_LABEL(FILE, NAME); \ - } while (0) - -/* Output the size directive for a decl in rest_of_decl_compilation - in the case where we did not do so before the initializer. - Once we find the error_mark_node, we know that the value of - size_directive_output was set - by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */ - -#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \ -do { \ - char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \ - if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \ - && ! AT_END && TOP_LEVEL \ - && DECL_INITIAL (DECL) == error_mark_node \ - && !size_directive_output) \ - { \ - size_directive_output = 1; \ - fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ - assemble_name (FILE, name); \ - putc (',', FILE); \ - fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, \ - int_size_in_bytes (TREE_TYPE (DECL))); \ - putc ('\n', FILE); \ - } \ -} while (0) - -/* A table of bytes codes used by the ASM_OUTPUT_ASCII and - ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table - corresponds to a particular byte value [0..255]. For any - given byte value, if the value in the corresponding table - position is zero, the given character can be output directly. - If the table value is 1, the byte must be output as a \ooo - octal escape. If the tables value is anything else, then the - byte value should be output as a \ followed by the value - in the table. Note that we can use standard UN*X escape - sequences for many control characters, but we don't use - \a to represent BEL because some svr4 assemblers (e.g. on - the i386) don't know about that. Also, we don't use \v - since some versions of gas, such as 2.2 did not accept it. */ - -#define ESCAPES \ -"\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ -\0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\ -\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\ -\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\ -\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ -\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ -\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\ -\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1" - -/* Some svr4 assemblers have a limit on the number of characters which - can appear in the operand of a .string directive. If your assembler - has such a limitation, you should define STRING_LIMIT to reflect that - limit. Note that at least some svr4 assemblers have a limit on the - actual number of bytes in the double-quoted string, and that they - count each character in an escape sequence as one byte. Thus, an - escape sequence like \377 would count as four bytes. - - If your target assembler doesn't support the .string directive, you - should define this to zero. */ - -#define STRING_LIMIT ((unsigned) 256) -#define STRING_ASM_OP ".string" - -/* GAS is the only Alpha/ELF assembler. */ -#undef TARGET_GAS -#define TARGET_GAS (1) - -/* Provide a STARTFILE_SPEC appropriate for ELF. Here we add the - (even more) magical crtbegin.o file which provides part of the - support for getting C++ file-scope static object constructed before - entering `main'. - - Don't bother seeing crtstuff.c -- there is absolutely no hope of - getting that file to understand multiple GPs. GNU Libc provides a - hand-coded version that is used on Linux; it could be copied here - if there is ever a need. */ - -#undef STARTFILE_SPEC -#define STARTFILE_SPEC \ - "%{!shared: \ - %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\ - crti.o%s crtbegin.o%s" - -/* Provide a ENDFILE_SPEC appropriate for ELF. Here we tack on the - magical crtend.o file which provides part of the support for - getting C++ file-scope static object constructed before entering - `main', followed by a normal ELF "finalizer" file, `crtn.o'. */ - -#undef ENDFILE_SPEC -#define ENDFILE_SPEC \ - "crtend.o%s crtn.o%s" - -/* We support #pragma. */ -#define HANDLE_SYSV_PRAGMA - -/* Undo the auto-alignment stuff from alpha.h. ELF has unaligned data - pseudos natively. */ -#undef UNALIGNED_SHORT_ASM_OP -#undef UNALIGNED_INT_ASM_OP -#undef UNALIGNED_DOUBLE_INT_ASM_OP |