diff options
Diffstat (limited to 'contrib/gdb/bfd/elf32-ppc.c')
| -rw-r--r-- | contrib/gdb/bfd/elf32-ppc.c | 2554 |
1 files changed, 0 insertions, 2554 deletions
diff --git a/contrib/gdb/bfd/elf32-ppc.c b/contrib/gdb/bfd/elf32-ppc.c deleted file mode 100644 index a8e5ad3fdb19a..0000000000000 --- a/contrib/gdb/bfd/elf32-ppc.c +++ /dev/null @@ -1,2554 +0,0 @@ -/* PowerPC-specific support for 32-bit ELF - Copyright 1994, 1995, 1996 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -/* This file is based on a preliminary PowerPC ELF ABI. The - information may not match the final PowerPC ELF ABI. It includes - suggestions from the in-progress Embedded PowerPC ABI, and that - information may also not match. */ - -#include "bfd.h" -#include "sysdep.h" -#include "bfdlink.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/ppc.h" - -#define USE_RELA /* we want RELA relocations, not REL */ - -/* PowerPC relocations defined by the ABIs */ -enum ppc_reloc_type -{ - R_PPC_NONE = 0, - R_PPC_ADDR32 = 1, - R_PPC_ADDR24 = 2, - R_PPC_ADDR16 = 3, - R_PPC_ADDR16_LO = 4, - R_PPC_ADDR16_HI = 5, - R_PPC_ADDR16_HA = 6, - R_PPC_ADDR14 = 7, - R_PPC_ADDR14_BRTAKEN = 8, - R_PPC_ADDR14_BRNTAKEN = 9, - R_PPC_REL24 = 10, - R_PPC_REL14 = 11, - R_PPC_REL14_BRTAKEN = 12, - R_PPC_REL14_BRNTAKEN = 13, - R_PPC_GOT16 = 14, - R_PPC_GOT16_LO = 15, - R_PPC_GOT16_HI = 16, - R_PPC_GOT16_HA = 17, - R_PPC_PLTREL24 = 18, - R_PPC_COPY = 19, - R_PPC_GLOB_DAT = 20, - R_PPC_JMP_SLOT = 21, - R_PPC_RELATIVE = 22, - R_PPC_LOCAL24PC = 23, - R_PPC_UADDR32 = 24, - R_PPC_UADDR16 = 25, - R_PPC_REL32 = 26, - R_PPC_PLT32 = 27, - R_PPC_PLTREL32 = 28, - R_PPC_PLT16_LO = 29, - R_PPC_PLT16_HI = 30, - R_PPC_PLT16_HA = 31, - R_PPC_SDAREL16 = 32, - R_PPC_SECTOFF = 33, - R_PPC_SECTOFF_LO = 34, - R_PPC_SECTOFF_HI = 35, - R_PPC_SECTOFF_HA = 36, - - /* The remaining relocs are from the Embedded ELF ABI, and are not - in the SVR4 ELF ABI. */ - R_PPC_EMB_NADDR32 = 101, - R_PPC_EMB_NADDR16 = 102, - R_PPC_EMB_NADDR16_LO = 103, - R_PPC_EMB_NADDR16_HI = 104, - R_PPC_EMB_NADDR16_HA = 105, - R_PPC_EMB_SDAI16 = 106, - R_PPC_EMB_SDA2I16 = 107, - R_PPC_EMB_SDA2REL = 108, - R_PPC_EMB_SDA21 = 109, - R_PPC_EMB_MRKREF = 110, - R_PPC_EMB_RELSEC16 = 111, - R_PPC_EMB_RELST_LO = 112, - R_PPC_EMB_RELST_HI = 113, - R_PPC_EMB_RELST_HA = 114, - R_PPC_EMB_BIT_FLD = 115, - R_PPC_EMB_RELSDA = 116, - - /* This is a phony reloc to handle any old fashioned TOC16 references - that may still be in object files. */ - R_PPC_TOC16 = 255, - - R_PPC_max -}; - -static reloc_howto_type *ppc_elf_reloc_type_lookup - PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); -static void ppc_elf_info_to_howto - PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst)); -static void ppc_elf_howto_init PARAMS ((void)); -static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword)); -static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); -static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); - -static int ppc_elf_additional_program_headers PARAMS ((bfd *)); -static boolean ppc_elf_modify_segment_map PARAMS ((bfd *)); - -static boolean ppc_elf_section_from_shdr PARAMS ((bfd *, - Elf32_Internal_Shdr *, - char *)); - -static elf_linker_section_t *ppc_elf_create_linker_section - PARAMS ((bfd *abfd, - struct bfd_link_info *info, - enum elf_linker_section_enum)); - -static boolean ppc_elf_check_relocs PARAMS ((bfd *, - struct bfd_link_info *, - asection *, - const Elf_Internal_Rela *)); - -static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *, - struct elf_link_hash_entry *)); - -static boolean ppc_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR)); - -static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); - -static boolean ppc_elf_relocate_section PARAMS ((bfd *, - struct bfd_link_info *info, - bfd *, - asection *, - bfd_byte *, - Elf_Internal_Rela *relocs, - Elf_Internal_Sym *local_syms, - asection **)); - -static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *, - struct bfd_link_info *, - const Elf_Internal_Sym *, - const char **, - flagword *, - asection **, - bfd_vma *)); - -static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *, - struct bfd_link_info *, - struct elf_link_hash_entry *, - Elf_Internal_Sym *)); - -static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); - -#define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */ -#define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */ -#define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */ - -/* The name of the dynamic interpreter. This is put in the .interp - section. */ - -#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" - - -static reloc_howto_type *ppc_elf_howto_table[ (int)R_PPC_max ]; - -static reloc_howto_type ppc_elf_howto_raw[] = -{ - /* This reloc does nothing. */ - HOWTO (R_PPC_NONE, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_NONE", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* A standard 32 bit relocation. */ - HOWTO (R_PPC_ADDR32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_ADDR32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* An absolute 26 bit branch; the lower two bits must be zero. - FIXME: we don't check that, we just clear them. */ - HOWTO (R_PPC_ADDR24, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_ADDR24", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0x3fffffc, /* dst_mask */ - false), /* pcrel_offset */ - - /* A standard 16 bit relocation. */ - HOWTO (R_PPC_ADDR16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_ADDR16", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* A 16 bit relocation without overflow. */ - HOWTO (R_PPC_ADDR16_LO, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_ADDR16_LO", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* The high order 16 bits of an address. */ - HOWTO (R_PPC_ADDR16_HI, /* type */ - 16, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_ADDR16_HI", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* The high order 16 bits of an address, plus 1 if the contents of - the low 16 bits, treated as a signed number, is negative. */ - HOWTO (R_PPC_ADDR16_HA, /* type */ - 16, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_ADDR16_HA", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* An absolute 16 bit branch; the lower two bits must be zero. - FIXME: we don't check that, we just clear them. */ - HOWTO (R_PPC_ADDR14, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_ADDR14", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xfffc, /* dst_mask */ - false), /* pcrel_offset */ - - /* An absolute 16 bit branch, for which bit 10 should be set to - indicate that the branch is expected to be taken. The lower two - bits must be zero. */ - HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_ADDR14_BRTAKEN",/* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xfffc, /* dst_mask */ - false), /* pcrel_offset */ - - /* An absolute 16 bit branch, for which bit 10 should be set to - indicate that the branch is not expected to be taken. The lower - two bits must be zero. */ - HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_ADDR14_BRNTAKEN",/* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xfffc, /* dst_mask */ - false), /* pcrel_offset */ - - /* A relative 26 bit branch; the lower two bits must be zero. */ - HOWTO (R_PPC_REL24, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_REL24", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0x3fffffc, /* dst_mask */ - true), /* pcrel_offset */ - - /* A relative 16 bit branch; the lower two bits must be zero. */ - HOWTO (R_PPC_REL14, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_REL14", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xfffc, /* dst_mask */ - true), /* pcrel_offset */ - - /* A relative 16 bit branch. Bit 10 should be set to indicate that - the branch is expected to be taken. The lower two bits must be - zero. */ - HOWTO (R_PPC_REL14_BRTAKEN, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_REL14_BRTAKEN", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xfffc, /* dst_mask */ - true), /* pcrel_offset */ - - /* A relative 16 bit branch. Bit 10 should be set to indicate that - the branch is not expected to be taken. The lower two bits must - be zero. */ - HOWTO (R_PPC_REL14_BRNTAKEN, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_REL14_BRNTAKEN",/* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xfffc, /* dst_mask */ - true), /* pcrel_offset */ - - /* Like R_PPC_ADDR16, but referring to the GOT table entry for the - symbol. */ - HOWTO (R_PPC_GOT16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_GOT16", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for - the symbol. */ - HOWTO (R_PPC_GOT16_LO, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_GOT16_LO", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for - the symbol. */ - HOWTO (R_PPC_GOT16_HI, /* type */ - 16, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_GOT16_HI", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for - the symbol. */ - HOWTO (R_PPC_GOT16_HA, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_GOT16_HA", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Like R_PPC_REL24, but referring to the procedure linkage table - entry for the symbol. FIXME: Not supported. */ - HOWTO (R_PPC_PLTREL24, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_PLTREL24", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0x3fffffc, /* dst_mask */ - true), /* pcrel_offset */ - - /* This is used only by the dynamic linker. The symbol should exist - both in the object being run and in some shared library. The - dynamic linker copies the data addressed by the symbol from the - shared library into the object. I have no idea what the purpose - of this is. */ - HOWTO (R_PPC_COPY, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_COPY", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* Like R_PPC_ADDR32, but used when setting global offset table - entries. */ - HOWTO (R_PPC_GLOB_DAT, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_GLOB_DAT", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Marks a procedure linkage table entry for a symbol. */ - HOWTO (R_PPC_JMP_SLOT, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_JMP_SLOT", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* Used only by the dynamic linker. When the object is run, this - longword is set to the load address of the object, plus the - addend. */ - HOWTO (R_PPC_RELATIVE, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_RELATIVE", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Like R_PPC_REL24, but uses the value of the symbol within the - object rather than the final value. Normally used for - _GLOBAL_OFFSET_TABLE_. FIXME: Not supported. */ - HOWTO (R_PPC_LOCAL24PC, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_LOCAL24PC", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0x3fffffc, /* dst_mask */ - true), /* pcrel_offset */ - - /* Like R_PPC_ADDR32, but may be unaligned. */ - HOWTO (R_PPC_UADDR32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_UADDR32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Like R_PPC_ADDR16, but may be unaligned. */ - HOWTO (R_PPC_UADDR16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_UADDR16", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 32-bit PC relative */ - HOWTO (R_PPC_REL32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_REL32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - true), /* pcrel_offset */ - - /* 32-bit relocation to the symbol's procedure linkage table. - FIXEME: not supported. */ - HOWTO (R_PPC_PLT32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_PLT32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - /* 32-bit PC relative relocation to the symbol's procedure linkage table. - FIXEME: not supported. */ - HOWTO (R_PPC_PLTREL32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_PLTREL32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - true), /* pcrel_offset */ - - /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for - the symbol. */ - HOWTO (R_PPC_PLT16_LO, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_PLT16_LO", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for - the symbol. */ - HOWTO (R_PPC_PLT16_HI, /* type */ - 16, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_PLT16_HI", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for - the symbol. FIXME: Not supported. */ - HOWTO (R_PPC_PLT16_HA, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_PLT16_HA", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with - small data items. */ - HOWTO (R_PPC_SDAREL16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_SDAREL16", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 32-bit section relative relocation. */ - HOWTO (R_PPC_SECTOFF, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_SECTOFF", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - true), /* pcrel_offset */ - - /* 16-bit lower half section relative relocation. */ - HOWTO (R_PPC_SECTOFF_LO, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_SECTOFF_LO", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 16-bit upper half section relative relocation. */ - HOWTO (R_PPC_SECTOFF_HI, /* type */ - 16, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_SECTOFF_HI", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 16-bit upper half adjusted section relative relocation. */ - HOWTO (R_PPC_SECTOFF_HA, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_SECTOFF_HA", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* The remaining relocs are from the Embedded ELF ABI, and are not - in the SVR4 ELF ABI. */ - - /* 32 bit value resulting from the addend minus the symbol */ - HOWTO (R_PPC_EMB_NADDR32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_NADDR32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 16 bit value resulting from the addend minus the symbol */ - HOWTO (R_PPC_EMB_NADDR16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_NADDR16", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 16 bit value resulting from the addend minus the symbol */ - HOWTO (R_PPC_EMB_NADDR16_LO, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_ADDR16_LO", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* The high order 16 bits of the addend minus the symbol */ - HOWTO (R_PPC_EMB_NADDR16_HI, /* type */ - 16, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_NADDR16_HI", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* The high order 16 bits of the result of the addend minus the address, - plus 1 if the contents of the low 16 bits, treated as a signed number, - is negative. */ - HOWTO (R_PPC_EMB_NADDR16_HA, /* type */ - 16, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_NADDR16_HA", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 16 bit value resulting from allocating a 4 byte word to hold an - address in the .sdata section, and returning the offset from - _SDA_BASE_ for that relocation */ - HOWTO (R_PPC_EMB_SDAI16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_SDAI16", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 16 bit value resulting from allocating a 4 byte word to hold an - address in the .sdata2 section, and returning the offset from - _SDA2_BASE_ for that relocation */ - HOWTO (R_PPC_EMB_SDA2I16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_SDA2I16", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with - small data items. */ - HOWTO (R_PPC_EMB_SDA2REL, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_SDA2REL", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit - signed offset from the appropriate base, and filling in the register - field with the appropriate register (0, 2, or 13). */ - HOWTO (R_PPC_EMB_SDA21, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_SDA21", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Relocation not handled: R_PPC_EMB_MRKREF */ - /* Relocation not handled: R_PPC_EMB_RELSEC16 */ - /* Relocation not handled: R_PPC_EMB_RELST_LO */ - /* Relocation not handled: R_PPC_EMB_RELST_HI */ - /* Relocation not handled: R_PPC_EMB_RELST_HA */ - /* Relocation not handled: R_PPC_EMB_BIT_FLD */ - - /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling - in the 16 bit signed offset from the appropriate base, and filling in the - register field with the appropriate register (0, 2, or 13). */ - HOWTO (R_PPC_EMB_RELSDA, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_EMB_RELSDA", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Phony reloc to handle AIX style TOC entries */ - HOWTO (R_PPC_TOC16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_PPC_TOC16", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ -}; - - -/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */ - -static void -ppc_elf_howto_init () -{ - unsigned int i, type; - - for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++) - { - type = ppc_elf_howto_raw[i].type; - BFD_ASSERT (type < sizeof(ppc_elf_howto_table) / sizeof(ppc_elf_howto_table[0])); - ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i]; - } -} - - -static reloc_howto_type * -ppc_elf_reloc_type_lookup (abfd, code) - bfd *abfd; - bfd_reloc_code_real_type code; -{ - enum ppc_reloc_type ppc_reloc = R_PPC_NONE; - - if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */ - ppc_elf_howto_init (); - - switch ((int)code) - { - default: - return (reloc_howto_type *)NULL; - - case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break; - case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break; - case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break; - case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break; - case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break; - case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break; - case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break; - case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break; - case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break; - case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break; - case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break; - case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break; - case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break; - case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break; - case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break; - case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break; - case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break; - case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break; - case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break; - case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break; - case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break; - case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break; - case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break; - case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break; - case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break; - case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break; - case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break; - case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break; - case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break; - case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break; - case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break; - case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break; - case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break; - case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break; - case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break; - case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break; - case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break; - case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break; - case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break; - case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break; - case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break; - case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break; - case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break; - case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break; - case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break; - case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break; - case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break; - case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break; - case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break; - case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break; - case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break; - } - - return ppc_elf_howto_table[ (int)ppc_reloc ]; -}; - -/* Set the howto pointer for a PowerPC ELF reloc. */ - -static void -ppc_elf_info_to_howto (abfd, cache_ptr, dst) - bfd *abfd; - arelent *cache_ptr; - Elf32_Internal_Rela *dst; -{ - if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */ - ppc_elf_howto_init (); - - BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max); - cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; -} - -/* Function to set whether a module needs the -mrelocatable bit set. */ - -static boolean -ppc_elf_set_private_flags (abfd, flags) - bfd *abfd; - flagword flags; -{ - BFD_ASSERT (!elf_flags_init (abfd) - || elf_elfheader (abfd)->e_flags == flags); - - elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = true; - return true; -} - -/* Copy backend specific data from one object module to another */ -static boolean -ppc_elf_copy_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; -{ - /* This function is selected based on the input vector. We only - want to copy information over if the output BFD also uses Elf - format. */ - if (bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; - - BFD_ASSERT (!elf_flags_init (obfd) - || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); - - elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; - elf_flags_init (obfd) = true; - return true; -} - -/* Merge backend specific data from an object file to the output - object file when linking */ -static boolean -ppc_elf_merge_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; -{ - flagword old_flags; - flagword new_flags; - boolean error; - - /* Check if we have the same endianess */ - if (ibfd->xvec->byteorder != obfd->xvec->byteorder - && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) - { - (*_bfd_error_handler) - ("%s: compiled for a %s endian system and target is %s endian", - bfd_get_filename (ibfd), - bfd_big_endian (ibfd) ? "big" : "little", - bfd_big_endian (obfd) ? "big" : "little"); - - bfd_set_error (bfd_error_wrong_format); - return false; - } - - /* This function is selected based on the input vector. We only - want to copy information over if the output BFD also uses Elf - format. */ - if (bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; - - new_flags = elf_elfheader (ibfd)->e_flags; - old_flags = elf_elfheader (obfd)->e_flags; - if (!elf_flags_init (obfd)) /* First call, no flags set */ - { - elf_flags_init (obfd) = true; - elf_elfheader (obfd)->e_flags = new_flags; - } - - else if (new_flags == old_flags) /* Compatible flags are ok */ - ; - - else /* Incompatible flags */ - { - /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked - with either. */ - error = false; - if ((new_flags & EF_PPC_RELOCATABLE) != 0 - && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) - { - error = true; - (*_bfd_error_handler) - ("%s: compiled with -mrelocatable and linked with modules compiled normally", - bfd_get_filename (ibfd)); - } - else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 - && (old_flags & EF_PPC_RELOCATABLE) != 0) - { - error = true; - (*_bfd_error_handler) - ("%s: compiled normally and linked with modules compiled with -mrelocatable", - bfd_get_filename (ibfd)); - } - else if ((new_flags & EF_PPC_RELOCATABLE_LIB) != 0) - elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE_LIB; - - - /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */ - elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); - - new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); - old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); - - /* Warn about any other mismatches */ - if (new_flags != old_flags) - { - error = true; - (*_bfd_error_handler) - ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)", - bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); - } - - if (error) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - } - - return true; -} - - -/* Handle a PowerPC specific section when reading an object file. This - is called when elfcode.h finds a section with an unknown type. */ - -static boolean -ppc_elf_section_from_shdr (abfd, hdr, name) - bfd *abfd; - Elf32_Internal_Shdr *hdr; - char *name; -{ - asection *newsect; - flagword flags; - - if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) - return false; - - newsect = hdr->bfd_section; - flags = bfd_get_section_flags (abfd, newsect); - if (hdr->sh_flags & SHF_EXCLUDE) - flags |= SEC_EXCLUDE; - - if (hdr->sh_type == SHT_ORDERED) - flags |= SEC_SORT_ENTRIES; - - bfd_set_section_flags (abfd, newsect, flags); - return true; -} - - -/* Set up any other section flags and such that may be necessary. */ - -boolean -ppc_elf_fake_sections (abfd, shdr, asect) - bfd *abfd; - Elf32_Internal_Shdr *shdr; - asection *asect; -{ - if ((asect->flags & SEC_EXCLUDE) != 0) - shdr->sh_flags |= SHF_EXCLUDE; - - if ((asect->flags & SEC_SORT_ENTRIES) != 0) - shdr->sh_type = SHT_ORDERED; -} - - -/* Create a special linker section */ -static elf_linker_section_t * -ppc_elf_create_linker_section (abfd, info, which) - bfd *abfd; - struct bfd_link_info *info; - enum elf_linker_section_enum which; -{ - bfd *dynobj = elf_hash_table (info)->dynobj; - elf_linker_section_t *lsect; - - /* Record the first bfd section that needs the special section */ - if (!dynobj) - dynobj = elf_hash_table (info)->dynobj = abfd; - - /* If this is the first time, create the section */ - lsect = elf_linker_section (dynobj, which); - if (!lsect) - { - elf_linker_section_t defaults; - static elf_linker_section_t zero_section; - - defaults = zero_section; - defaults.which = which; - defaults.hole_written_p = false; - defaults.alignment = 2; - defaults.flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY; - - switch (which) - { - default: - (*_bfd_error_handler) ("%s: Unknown special linker type %d", - bfd_get_filename (abfd), - (int)which); - - bfd_set_error (bfd_error_bad_value); - return (elf_linker_section_t *)0; - - case LINKER_SECTION_GOT: /* .got section */ - defaults.name = ".got"; - defaults.rel_name = ".rela.got"; - defaults.sym_name = "_GLOBAL_OFFSET_TABLE_"; - defaults.max_hole_offset = 32764; - defaults.hole_size = 16; - defaults.sym_offset = 4; - break; - - case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ - defaults.name = ".sdata"; - defaults.rel_name = ".rela.sdata"; - defaults.bss_name = ".sbss"; - defaults.sym_name = "_SDA_BASE_"; - defaults.sym_offset = 32768; - break; - - case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ - defaults.name = ".sdata2"; - defaults.rel_name = ".rela.sdata2"; - defaults.bss_name = ".sbss2"; - defaults.sym_name = "_SDA2_BASE_"; - defaults.sym_offset = 32768; - defaults.flags |= SEC_READONLY; - break; - } - - lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults); - } - - return lsect; -} - - -/* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we need to bump up - the number of section headers. */ - -static int -ppc_elf_additional_program_headers (abfd) - bfd *abfd; -{ - asection *s; - int ret; - - ret = 0; - - s = bfd_get_section_by_name (abfd, ".sbss2"); - if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) - ++ret; - - s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0"); - if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0) - ++ret; - - return ret; -} - -/* Modify the segment map if needed */ - -static boolean -ppc_elf_modify_segment_map (abfd) - bfd *abfd; -{ - 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 -ppc_elf_adjust_dynamic_symbol (info, h) - struct bfd_link_info *info; - struct elf_link_hash_entry *h; -{ -#ifdef DEBUG - fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called\n"); -#endif - return true; -} - - -/* Increment the index of a dynamic symbol by a given amount. Called - via elf_link_hash_traverse. */ - -static boolean -ppc_elf_adjust_dynindx (h, cparg) - struct elf_link_hash_entry *h; - PTR cparg; -{ - int *cp = (int *) cparg; - -#ifdef DEBUG - fprintf (stderr, "ppc_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", h->dynindx, *cp); -#endif - - if (h->dynindx != -1) - h->dynindx += *cp; - - return true; -} - - -/* Set the sizes of the dynamic sections. */ - -static boolean -ppc_elf_size_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - bfd *dynobj; - asection *s; - boolean reltext; - boolean relplt; - -#ifdef DEBUG - fprintf (stderr, "ppc_elf_size_dynamic_sections called\n"); -#endif - - dynobj = elf_hash_table (info)->dynobj; - BFD_ASSERT (dynobj != NULL); - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* 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; - } - - /* Make space for the trailing nop in .plt. */ - s = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (s != NULL); - if (s->_raw_size > 0) - s->_raw_size += 4; - } - else - { - /* We may have created entries in the .rela.got, .rela.sdata, and - .rela.sdata2 section2. However, if we are not creating the - dynamic sections, we will not actually use these entries. Reset - the size of .rela.got, et al, which will cause it to get - stripped from the output file below. */ - static char *rela_sections[] = { ".rela.got", ".rela.sdata", ".rela.sdata", (char *)0 }; - char **p; - - for (p = rela_sections; *p != (char *)0; p++) - { - s = bfd_get_section_by_name (dynobj, *p); - if (s != NULL) - s->_raw_size = 0; - } - } - - /* The check_relocs and adjust_dynamic_symbol entry points have - determined the sizes of the various dynamic sections. Allocate - memory for them. */ - reltext = false; - relplt = false; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char *name; - boolean strip; - - if ((s->flags & SEC_IN_MEMORY) == 0) - continue; - - /* It's OK to base decisions on the section name, because none - of the dynobj section names depend upon the input files. */ - name = bfd_get_section_name (dynobj, s); - - strip = false; - -#if 0 - if (strncmp (name, ".rela", 5) == 0) - { - if (s->_raw_size == 0) - { - /* If we don't need this section, strip it from the - output file. This is to handle .rela.bss and - .rel.plt. We must create it in - create_dynamic_sections, because it must be created - before the linker maps input sections to output - sections. The linker does that before - adjust_dynamic_symbol is called, and it is that - function which decides whether anything needs to go - into these sections. */ - strip = true; - } - else - { - asection *target; - - /* If this relocation section applies to a read only - section, then we probably need a DT_TEXTREL entry. */ - target = bfd_get_section_by_name (output_bfd, name + 5); - if (target != NULL - && (target->flags & SEC_READONLY) != 0) - reltext = true; - - if (strcmp (name, ".rela.plt") == 0) - relplt = true; - - /* We use the reloc_count field as a counter if we need - to copy relocs into the output file. */ - s->reloc_count = 0; - } - } - else -#endif - if (strcmp (name, ".plt") != 0 - && strcmp (name, ".got") != 0 - && strcmp (name, ".sdata") != 0 - && strcmp (name, ".sdata2") != 0 - && strcmp (name, ".rela.sdata") != 0 - && strcmp (name, ".rela.sdata2") != 0) - { - /* It's not one of our sections, so don't allocate space. */ - continue; - } - - if (strip) - { - 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; - - continue; - } - - /* Allocate memory for the section contents. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); - if (s->contents == NULL && s->_raw_size != 0) - return false; - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in ppc_elf_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 (! info->shared) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) - return false; - } - - if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) - return false; - - if (relplt) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) - || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) - return false; - } - - if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, - sizeof (Elf32_External_Rela))) - return false; - - if (reltext) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) - return false; - } - } - - /* If we are generating a shared library, we generate a section - symbol for each output section. These are local symbols, which - means that they must come first in the dynamic symbol table. - That means we must increment the dynamic symbol index of every - other dynamic symbol. */ - if (info->shared) - { - int c, i; - - c = bfd_count_sections (output_bfd); - elf_link_hash_traverse (elf_hash_table (info), - ppc_elf_adjust_dynindx, - (PTR) &c); - elf_hash_table (info)->dynsymcount += c; - - for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++) - { - elf_section_data (s)->dynindx = i; - /* These symbols will have no names, so we don't need to - fiddle with dynstr_index. */ - } - } - - return true; -} - - -/* Look through the relocs for a section during the first phase, and - allocate space in the global offset table or procedure linkage - table. */ - -static boolean -ppc_elf_check_relocs (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; -{ - bfd *dynobj; - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - elf_linker_section_t *got; - elf_linker_section_t *sdata; - elf_linker_section_t *sdata2; - asection *sreloc; - - if (info->relocateable) - return true; - -#ifdef DEBUG - fprintf (stderr, "ppc_elf_check_relocs called for section %s\n", - bfd_get_section_name (abfd, sec)); -#endif - - /* Create the linker generated sections all the time so that the special - symbols are created. */ - if ((got = elf_linker_section (abfd, LINKER_SECTION_GOT)) == NULL) - { - got = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_GOT); - if (!got) - return false; - } - - if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL) - { - sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); - if (!sdata) - return false; - } - - - if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL) - { - sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2); - if (!sdata2) - return false; - } - - dynobj = elf_hash_table (info)->dynobj; - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - - sreloc = NULL; - - rel_end = relocs + sec->reloc_count; - for (rel = relocs; rel < rel_end; rel++) - { - unsigned long r_symndx; - struct elf_link_hash_entry *h; - - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx < symtab_hdr->sh_info) - h = NULL; - else - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - - switch (ELF32_R_TYPE (rel->r_info)) - { - default: - break; - - /* GOT16 relocations */ - case R_PPC_GOT16: - case R_PPC_GOT16_LO: - case R_PPC_GOT16_HI: - case R_PPC_GOT16_HA: - if (got->rel_section == NULL - && (h != NULL || info->shared) - && !_bfd_elf_make_linker_section_rela (dynobj, got, 2)) - return false; - - if (!bfd_elf32_create_pointer_linker_section (abfd, info, got, h, rel)) - return false; - - break; - - /* Indirect .sdata relocation */ - case R_PPC_EMB_SDAI16: - if (got->rel_section == NULL - && (h != NULL || info->shared) - && !_bfd_elf_make_linker_section_rela (dynobj, got, 2)) - return false; - - if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel)) - return false; - - break; - - /* Indirect .sdata2 relocation */ - case R_PPC_EMB_SDA2I16: - if (got->rel_section == NULL - && (h != NULL || info->shared) - && !_bfd_elf_make_linker_section_rela (dynobj, got, 2)) - return false; - - if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel)) - return false; - - break; - -#if 0 - case R_PPC_PLT32: - case R_PPC_PLTREL24: - case R_PPC_PLT16_LO: - case R_PPC_PLT16_HI: - case R_PPC_PLT16_HA: -#ifdef DEBUG - fprintf (stderr, "Reloc requires a PLT entry\n"); -#endif - /* This symbol requires a procedure linkage table entry. We - actually build the entry in adjust_dynamic_symbol, - because this might be a case of linking PIC code without - linking in any dynamic objects, in which case we don't - need to generate a procedure linkage table after all. */ - - if (h == NULL) - { - /* It does not make sense to have a procedure linkage - table entry for a local symbol. */ - bfd_set_error (bfd_error_bad_value); - return false; - } - - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1) - { - if (! bfd_elf32_link_record_dynamic_symbol (info, h)) - return false; - } - - h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; - break; - - case R_SPARC_PC10: - case R_SPARC_PC22: - if (h != NULL - && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) - break; - /* Fall through. */ - case R_SPARC_DISP8: - case R_SPARC_DISP16: - case R_SPARC_DISP32: - case R_SPARC_WDISP30: - case R_SPARC_WDISP22: - if (h == NULL) - break; - /* Fall through. */ - case R_SPARC_8: - case R_SPARC_16: - case R_SPARC_32: - case R_SPARC_HI22: - case R_SPARC_22: - case R_SPARC_13: - case R_SPARC_LO10: - case R_SPARC_UA32: - if (info->shared - && (sec->flags & SEC_ALLOC) != 0) - { - /* When creating a shared object, we must copy these - relocs into the output file. We create a reloc - section in dynobj and make room for the reloc. */ - if (sreloc == NULL) - { - const char *name; - - name = (bfd_elf_string_from_elf_section - (abfd, - elf_elfheader (abfd)->e_shstrndx, - elf_section_data (sec)->rel_hdr.sh_name)); - if (name == NULL) - return false; - - BFD_ASSERT (strncmp (name, ".rela", 5) == 0 - && strcmp (bfd_get_section_name (abfd, sec), - name + 5) == 0); - - sreloc = bfd_get_section_by_name (dynobj, name); - if (sreloc == NULL) - { - sreloc = bfd_make_section (dynobj, name); - if (sreloc == NULL - || ! bfd_set_section_flags (dynobj, sreloc, - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_READONLY)) - || ! bfd_set_section_alignment (dynobj, sreloc, 2)) - return false; - } - } - - sreloc->_raw_size += sizeof (Elf32_External_Rela); - } - - break; -#endif - } - } - - return true; -} - - -/* Hook called by the linker routine which adds symbols from an object - file. We use it to put .comm items in .sbss, and not .bss. */ - -/*ARGSUSED*/ -static boolean -ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) - bfd *abfd; - struct bfd_link_info *info; - const Elf_Internal_Sym *sym; - const char **namep; - flagword *flagsp; - asection **secp; - bfd_vma *valp; -{ - if (sym->st_shndx == SHN_COMMON && sym->st_size <= bfd_get_gp_size (abfd)) - { - /* Common symbols less than or equal to -G nn bytes are automatically - put into .sdata. */ - elf_linker_section_t *sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA); - if (!sdata->bss_section) - { - sdata->bss_section = bfd_make_section (elf_hash_table (info)->dynobj, sdata->bss_name); - sdata->bss_section->flags = (sdata->bss_section->flags & ~SEC_LOAD) | SEC_IS_COMMON; - } - - *secp = sdata->bss_section; - *valp = sym->st_size; - } - - return true; -} - - -/* Finish up dynamic symbol handling. We set the contents of various - dynamic sections here. */ - -static boolean -ppc_elf_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; -{ - bfd *dynobj; - -#ifdef DEBUG - fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s\n", h->root.root.string); -#endif - - dynobj = elf_hash_table (info)->dynobj; - BFD_ASSERT (dynobj != NULL); - - if (h->plt_offset != (bfd_vma) -1) - { - asection *splt; - asection *srela; - Elf_Internal_Rela rela; - - /* This symbol has an entry in the procedure linkage table. Set - it up. */ - - BFD_ASSERT (h->dynindx != -1); - - splt = bfd_get_section_by_name (dynobj, ".plt"); - srela = bfd_get_section_by_name (dynobj, ".rela.plt"); - BFD_ASSERT (splt != NULL && srela != NULL); - - /* Fill in the entry in the procedure linkage table. */ -#if 0 - bfd_put_32 (output_bfd, - PLT_ENTRY_WORD0 + h->plt_offset, - splt->contents + h->plt_offset); - bfd_put_32 (output_bfd, - (PLT_ENTRY_WORD1 - + (((- (h->plt_offset + 4)) >> 2) & 0x3fffff)), - splt->contents + h->plt_offset + 4); - bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, - splt->contents + h->plt_offset + 8); - - /* Fill in the entry in the .rela.plt section. */ - rela.r_offset = (splt->output_section->vma - + splt->output_offset - + h->plt_offset); - rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); - rela.r_addend = 0; - bfd_elf32_swap_reloca_out (output_bfd, &rela, - ((Elf32_External_Rela *) srela->contents - + h->plt_offset / PLT_ENTRY_SIZE - 4)); -#endif - - if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) - { - /* Mark the symbol as undefined, rather than as defined in - the .plt section. Leave the value alone. */ - sym->st_shndx = SHN_UNDEF; - } - } - - if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) - { - asection *s; - Elf_Internal_Rela rela; - - /* This symbols needs a copy reloc. Set it up. */ - - BFD_ASSERT (h->dynindx != -1); - - s = bfd_get_section_by_name (h->root.u.def.section->owner, - ".rela.bss"); - BFD_ASSERT (s != NULL); - - rela.r_offset = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY); - rela.r_addend = 0; - bfd_elf32_swap_reloca_out (output_bfd, &rela, - ((Elf32_External_Rela *) s->contents - + s->reloc_count)); - ++s->reloc_count; - } - - /* Mark some specially defined symbols as absolute. */ - if (strcmp (h->root.root.string, "_DYNAMIC") == 0 - || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 - || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) - sym->st_shndx = SHN_ABS; - - return true; -} - - -/* Finish up the dynamic sections. */ - -static boolean -ppc_elf_finish_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; -{ - asection *sdyn; - bfd *dynobj = elf_hash_table (info)->dynobj; - elf_linker_section_t *got = elf_linker_section (dynobj, LINKER_SECTION_GOT); - -#ifdef DEBUG - fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n"); -#endif - - sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); - - if (elf_hash_table (info)->dynamic_sections_created) - { - asection *splt; - Elf32_External_Dyn *dyncon, *dynconend; - - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != 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 (dynobj, dyncon, &dyn); - - switch (dyn.d_tag) - { - case DT_PLTGOT: name = ".plt"; size = false; break; - case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; - case DT_JMPREL: name = ".rela.plt"; size = false; break; - default: name = NULL; size = false; break; - } - - if (name != NULL) - { - asection *s; - - s = bfd_get_section_by_name (output_bfd, name); - if (s == NULL) - dyn.d_un.d_val = 0; - else - { - 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); - } - } - } - - /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can - easily find the address of the _GLOBAL_OFFSET_TABLE_. */ - if (got) - { - unsigned char *contents = got->section->contents + got->hole_offset; - bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); - - if (sdyn == NULL) - bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4); - else - bfd_put_32 (output_bfd, - sdyn->output_section->vma + sdyn->output_offset, - contents+4); - - elf_section_data (got->section->output_section)->this_hdr.sh_entsize = 4; - } - - if (info->shared) - { - asection *sdynsym; - asection *s; - Elf_Internal_Sym sym; - - /* Set up the section symbols for the output sections. */ - - sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); - BFD_ASSERT (sdynsym != NULL); - - sym.st_size = 0; - sym.st_name = 0; - sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); - sym.st_other = 0; - - for (s = output_bfd->sections; s != NULL; s = s->next) - { - int indx; - - sym.st_value = s->vma; - - indx = elf_section_data (s)->this_idx; - BFD_ASSERT (indx > 0); - sym.st_shndx = indx; - - bfd_elf32_swap_symbol_out (output_bfd, &sym, - (PTR) (((Elf32_External_Sym *) - sdynsym->contents) - + elf_section_data (s)->dynindx)); - } - - /* Set the sh_info field of the output .dynsym section to the - index of the first global symbol. */ - elf_section_data (sdynsym->output_section)->this_hdr.sh_info = - bfd_count_sections (output_bfd) + 1; - } - - return true; -} - - -/* The RELOCATE_SECTION function is called by the ELF backend linker - to handle the relocations for a section. - - The relocs are always passed as Rela structures; if the section - actually uses Rel structures, the r_addend field will always be - zero. - - This function is responsible for adjust the section contents as - necessary, and (if using Rela relocs and generating a - relocateable output file) adjusting the reloc addend as - necessary. - - This function does not have to worry about setting the reloc - address or the reloc symbol index. - - LOCAL_SYMS is a pointer to the swapped in local symbols. - - LOCAL_SECTIONS is an array giving the section in the input file - corresponding to the st_shndx field of each local symbol. - - The global hash table entry for the global symbols can be found - via elf_sym_hashes (input_bfd). - - When generating relocateable output, this function must handle - STB_LOCAL/STT_SECTION symbols specially. The output symbol is - going to be the section symbol corresponding to the output - section, which means that the addend must be adjusted - accordingly. */ - -static boolean -ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section, - contents, relocs, local_syms, local_sections) - 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; -{ - Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); - bfd *dynobj = elf_hash_table (info)->dynobj; - elf_linker_section_t *got = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_GOT) : NULL; - elf_linker_section_t *sdata = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA) : NULL; - elf_linker_section_t *sdata2 = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA2) : NULL; - Elf_Internal_Rela *rel = relocs; - Elf_Internal_Rela *relend = relocs + input_section->reloc_count; - boolean ret = true; - long insn; - -#ifdef DEBUG - fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n", - bfd_get_filename (input_bfd), - bfd_section_name(input_bfd, input_section), - (long)input_section->reloc_count, - (info->relocateable) ? " (relocatable)" : ""); -#endif - - if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */ - ppc_elf_howto_init (); - - for (; rel < relend; rel++) - { - enum ppc_reloc_type r_type = (enum ppc_reloc_type)ELF32_R_TYPE (rel->r_info); - bfd_vma offset = rel->r_offset; - bfd_vma addend = rel->r_addend; - bfd_reloc_status_type r = bfd_reloc_other; - Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0; - asection *sec = (asection *)0; - struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0; - const char *sym_name = (const char *)0; - reloc_howto_type *howto; - unsigned long r_symndx; - bfd_vma relocation; - - /* Unknown relocation handling */ - if ((unsigned)r_type >= (unsigned)R_PPC_max || !ppc_elf_howto_table[(int)r_type]) - { - (*_bfd_error_handler) ("%s: unknown relocation type %d", - bfd_get_filename (input_bfd), - (int)r_type); - - bfd_set_error (bfd_error_bad_value); - ret = false; - continue; - } - - howto = ppc_elf_howto_table[(int)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 ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION) - { - sec = local_sections[r_symndx]; - addend = rel->r_addend += sec->output_offset + sym->st_value; - } - } - -#ifdef DEBUG - fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n", - howto->name, - (int)r_type, - r_symndx, - (long)offset, - (long)addend); -#endif - continue; - } - - /* This is a final link. */ - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - sym_name = "<local symbol>"; - - relocation = (sec->output_section->vma - + sec->output_offset - + sym->st_value); - } - else - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - sym_name = h->root.root.string; - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - 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_undefweak) - relocation = 0; - else if (info->shared) - relocation = 0; - else - { - (*info->callbacks->undefined_symbol)(info, - h->root.root.string, - input_bfd, - input_section, - rel->r_offset); - ret = false; - continue; - } - } - - switch ((int)r_type) - { - default: - (*_bfd_error_handler) ("%s: unknown relocation type %d for symbol %s", - bfd_get_filename (input_bfd), - (int)r_type, sym_name); - - bfd_set_error (bfd_error_bad_value); - ret = false; - continue; - - /* relocations that need no special processing */ - case (int)R_PPC_NONE: - case (int)R_PPC_ADDR32: - case (int)R_PPC_ADDR24: - case (int)R_PPC_ADDR16: - case (int)R_PPC_ADDR16_LO: - case (int)R_PPC_ADDR16_HI: - case (int)R_PPC_ADDR14: - case (int)R_PPC_REL24: - case (int)R_PPC_REL14: - case (int)R_PPC_UADDR32: - case (int)R_PPC_UADDR16: - case (int)R_PPC_REL32: - break; - - /* branch taken prediction relocations */ - case (int)R_PPC_ADDR14_BRTAKEN: - case (int)R_PPC_REL14_BRTAKEN: - insn = bfd_get_32 (output_bfd, contents + offset); - if ((relocation - offset) & 0x8000) - insn &= ~BRANCH_PREDICT_BIT; - else - insn |= BRANCH_PREDICT_BIT; - bfd_put_32 (output_bfd, insn, contents + offset); - break; - - /* branch not taken predicition relocations */ - case (int)R_PPC_ADDR14_BRNTAKEN: - case (int)R_PPC_REL14_BRNTAKEN: - insn = bfd_get_32 (output_bfd, contents + offset); - if ((relocation - offset) & 0x8000) - insn |= BRANCH_PREDICT_BIT; - else - insn &= ~BRANCH_PREDICT_BIT; - bfd_put_32 (output_bfd, insn, contents + offset); - break; - - /* GOT16 relocations */ - case (int)R_PPC_GOT16: - case (int)R_PPC_GOT16_LO: - case (int)R_PPC_GOT16_HI: - case (int)R_PPC_GOT16_HA: - relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, - got, h, relocation, rel, - R_PPC_RELATIVE); - break; - - /* Indirect .sdata relocation */ - case (int)R_PPC_EMB_SDAI16: - BFD_ASSERT (sdata != NULL); - relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, - sdata, h, relocation, rel, - R_PPC_RELATIVE); - break; - - /* Indirect .sdata2 relocation */ - case (int)R_PPC_EMB_SDA2I16: - BFD_ASSERT (sdata2 != NULL); - relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info, - sdata2, h, relocation, rel, - R_PPC_RELATIVE); - break; - - /* Handle the TOC16 reloc. We want to use the offset within the .got - section, not the actual VMA. This is appropriate when generating - an embedded ELF object, for which the .got section acts like the - AIX .toc section. */ - case (int)R_PPC_TOC16: /* phony GOT16 relocations */ - BFD_ASSERT (sec != (asection *)0); - BFD_ASSERT (bfd_is_und_section (sec) - || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 - || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0) - - addend -= sec->output_section->vma + sec->output_offset + 0x8000; - break; - - /* arithmetic adjust relocations */ - case (int)R_PPC_ADDR16_HA: - BFD_ASSERT (sec != (asection *)0); - addend += ((relocation + addend) & 0x8000) << 1; - break; - - /* relocate against _SDA_BASE_ */ - case (int)R_PPC_SDAREL16: - BFD_ASSERT (sec != (asection *)0); - if (strcmp (bfd_get_section_name (abfd, sec), ".sdata") != 0 - && strcmp (bfd_get_section_name (abfd, sec), ".sbss") != 0) - { - (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)", - bfd_get_filename (input_bfd), - sym_name, - ppc_elf_howto_table[ (int)r_type ]->name, - bfd_get_section_name (abfd, sec)); - - bfd_set_error (bfd_error_bad_value); - ret = false; - continue; - } - addend -= (sdata->sym_hash->root.u.def.value - + sdata->sym_hash->root.u.def.section->output_section->vma - + sdata->sym_hash->root.u.def.section->output_offset); - break; - - - /* relocate against _SDA2_BASE_ */ - case (int)R_PPC_EMB_SDA2REL: - BFD_ASSERT (sec != (asection *)0); - if (strcmp (bfd_get_section_name (abfd, sec), ".sdata2") != 0 - && strcmp (bfd_get_section_name (abfd, sec), ".sbss2") != 0) - { - (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)", - bfd_get_filename (input_bfd), - sym_name, - ppc_elf_howto_table[ (int)r_type ]->name, - bfd_get_section_name (abfd, sec)); - - bfd_set_error (bfd_error_bad_value); - ret = false; - continue; - } - addend -= (sdata2->sym_hash->root.u.def.value - + sdata2->sym_hash->root.u.def.section->output_section->vma - + sdata2->sym_hash->root.u.def.section->output_offset); - break; - - - /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */ - case (int)R_PPC_EMB_SDA21: - case (int)R_PPC_EMB_RELSDA: - { - const char *name = bfd_get_section_name (abfd, sec); - int reg; - - BFD_ASSERT (sec != (asection *)0); - if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0) - { - reg = 13; - addend -= (sdata->sym_hash->root.u.def.value - + sdata->sym_hash->root.u.def.section->output_section->vma - + sdata->sym_hash->root.u.def.section->output_offset); - } - - else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0) - { - reg = 2; - addend -= (sdata2->sym_hash->root.u.def.value - + sdata2->sym_hash->root.u.def.section->output_section->vma - + sdata2->sym_hash->root.u.def.section->output_offset); - } - - else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0) - { - reg = 0; - } - - else - { - (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)", - bfd_get_filename (input_bfd), - sym_name, - ppc_elf_howto_table[ (int)r_type ]->name, - bfd_get_section_name (abfd, sec)); - - bfd_set_error (bfd_error_bad_value); - ret = false; - continue; - } - - if (r_type == R_PPC_EMB_SDA21) - { /* fill in register field */ - insn = bfd_get_32 (output_bfd, contents + offset); - insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT); - bfd_put_32 (output_bfd, insn, contents + offset); - } - } - break; - - /* Relocate against the beginning of the section */ - case (int)R_PPC_SECTOFF: - case (int)R_PPC_SECTOFF_LO: - case (int)R_PPC_SECTOFF_HI: - BFD_ASSERT (sec != (asection *)0); - addend -= sec->output_section->vma; - break; - - case (int)R_PPC_SECTOFF_HA: - BFD_ASSERT (sec != (asection *)0); - addend -= sec->output_section->vma; - addend += ((relocation + addend) & 0x8000) << 1; - break; - - /* Negative relocations */ - case (int)R_PPC_EMB_NADDR32: - case (int)R_PPC_EMB_NADDR16: - case (int)R_PPC_EMB_NADDR16_LO: - case (int)R_PPC_EMB_NADDR16_HI: - addend -= 2*relocation; - break; - - case (int)R_PPC_EMB_NADDR16_HA: - addend -= 2*relocation; - addend += ((relocation + addend) & 0x8000) << 1; - break; - - /* NOP relocation that prevents garbage collecting linkers from omitting a - reference. */ - case (int)R_PPC_EMB_MRKREF: - continue; - - case (int)R_PPC_PLTREL24: - case (int)R_PPC_COPY: - case (int)R_PPC_GLOB_DAT: - case (int)R_PPC_JMP_SLOT: - case (int)R_PPC_RELATIVE: - case (int)R_PPC_LOCAL24PC: - case (int)R_PPC_PLT32: - case (int)R_PPC_PLTREL32: - case (int)R_PPC_PLT16_LO: - case (int)R_PPC_PLT16_HI: - case (int)R_PPC_PLT16_HA: - case (int)R_PPC_EMB_RELSEC16: - case (int)R_PPC_EMB_RELST_LO: - case (int)R_PPC_EMB_RELST_HI: - case (int)R_PPC_EMB_RELST_HA: - case (int)R_PPC_EMB_BIT_FLD: - (*_bfd_error_handler) ("%s: Relocation %s is not yet supported for symbol %s.", - bfd_get_filename (input_bfd), - ppc_elf_howto_table[ (int)r_type ]->name, - sym_name); - - bfd_set_error (bfd_error_invalid_operation); - ret = false; - continue; - } - - -#ifdef DEBUG - fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n", - howto->name, - (int)r_type, - sym_name, - r_symndx, - (long)offset, - (long)addend); -#endif - - r = _bfd_final_link_relocate (howto, - input_bfd, - input_section, - contents, - offset, - relocation, - addend); - - if (r != bfd_reloc_ok) - { - ret = false; - switch (r) - { - default: - break; - - case bfd_reloc_overflow: - { - const char *name; - - if (h != NULL) - name = h->root.root.string; - else - { - name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - sym->st_name); - if (name == NULL) - break; - - if (*name == '\0') - name = bfd_section_name (input_bfd, sec); - } - - (*info->callbacks->reloc_overflow)(info, - name, - howto->name, - (bfd_vma) 0, - input_bfd, - input_section, - offset); - } - break; - - } - } - } - - -#ifdef DEBUG - fprintf (stderr, "\n"); -#endif - - return ret; -} - - -#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec -#define TARGET_LITTLE_NAME "elf32-powerpcle" -#define TARGET_BIG_SYM bfd_elf32_powerpc_vec -#define TARGET_BIG_NAME "elf32-powerpc" -#define ELF_ARCH bfd_arch_powerpc -#define ELF_MACHINE_CODE EM_PPC -#define ELF_MAXPAGESIZE 0x10000 -#define elf_info_to_howto ppc_elf_info_to_howto - -#ifdef EM_CYGNUS_POWERPC -#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC -#endif - -#ifdef EM_PPC_OLD -#define ELF_MACHINE_ALT2 EM_PPC_OLD -#endif - -#define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data -#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data -#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags -#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup -#define elf_backend_section_from_shdr ppc_elf_section_from_shdr -#define elf_backend_relocate_section ppc_elf_relocate_section -#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections -#define elf_backend_check_relocs ppc_elf_check_relocs -#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol -#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook -#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections -#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol -#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections -#define elf_backend_fake_sections ppc_elf_fake_sections -#define elf_backend_additional_program_headers ppc_elf_additional_program_headers -#define elf_backend_modify_segment_map ppc_elf_modify_segment_map - -#include "elf32-target.h" |