Fix powerpc PC relative reloc & add some 16 bit relocs.
This commit is contained in:
Michael Meissner
parent
677653a077
commit
bcbe2c719c
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@ -1,3 +1,50 @@
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Wed Feb 15 14:54:18 1995 Michael Meissner <meissner@tiktok.cygnus.com>
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* elf32-ppc.c (elf_powerpc_howto_table): Use a destination mask of
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0xffffffff for R_PPC_REL32, not 0.
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(powerpc_reloc_map): Add low 16 bit, high 16 bit, and high 16 bit
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adjusted relocations.
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Tue Feb 14 17:47:17 1995 Ian Lance Taylor <ian@cygnus.com>
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* elf32-mips.c (struct mips_elf_find_line): Define.
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(mips_elf_find_nearest_line): New static function.
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(bfd_elf32_find_nearest_line): Define.
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* libelf.h (struct elf_obj_tdata): Add find_line_info field.
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* ecoff.c (_bfd_ecoff_swap_tir_in): Move to ecofflink.c.
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(_bfd_ecoff_swap_tir_out): Likewise.
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(_bfd_ecoff_swap_rndx_in): Likewise.
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(_bfd_ecoff_swap_rndx_out): Likewise.
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(cmp_fdrtab_entry): Likewise.
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(mk_fdrtab): Likewise.
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(lookup): Likewise.
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(_bfd_ecoff_find_nearest_line): Just call _bfd_ecoff_locate_line
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to do most of the work. Allocate find_line_info if necessary.
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* ecofflink.c: Include "aout/stab_gnu.h".
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(_bfd_ecoff_swap_tir_in): Move in from ecoff.c.
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(_bfd_ecoff_swap_tir_out): Likewise.
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(_bfd_ecoff_swap_rndx_in): Likewise.
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(_bfd_ecoff_swap_rndx_out): Likewise.
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(cmp_fdrtab_entry): Likewise. Use PTR instead of void *.
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(mk_fdrtab): Move in from ecoff.c. Add debug_info, debug_swap,
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and line_info arguments, and use them instead of ecoff_data.
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(fdrtab_lookup): Move in from lookup in ecoff.c. Remove abfd
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argument, add line_info argument. Use it instead of ecoff_data.
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(_bfd_ecoff_locate_line): New function, mostly from the old
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_bfd_ecoff_find_nearest_line in ecoff.c.
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* libecoff.h (ecoff_data_type): Remove find_buffer, fdrtab_len and
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fdrtab fields, replacing them find_line_info field.
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(_bfd_ecoff_swap_tir_in): Declare.
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(_bfd_ecoff_swap_tir_out): Declare.
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(_bfd_ecoff_swap_rndx_in): Declare.
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(_bfd_ecoff_swap_rndx_out): Declare.
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* libbfd-in.h (_bfd_ecoff_locate_line): Declare.
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* libbfd.h: Rebuild.
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* configure.in: Don't use ecoff.o for bfd_elf32_bigmips_vec or
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bfd_elf32_littlemips_vec.
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* Makefile.in: Rebuild dependencies.
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Tue Feb 14 14:04:22 1995 Michael Meissner <meissner@tiktok.cygnus.com>
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* libelf.h (elf_backend_data): Add fields elf_machine_alt1 and
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@ -0,0 +1,926 @@
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/* PowerPC-specific support for 32-bit ELF
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Copyright 1994, 1995 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* This file is based on a preliminary PowerPC ELF ABI. The
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information may not match the final PowerPC ELF ABI. It includes
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suggestions from the in-progress Embedded PowerPC ABI, and that
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information may also not match. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "libelf.h"
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static bfd_reloc_status_type ppc_elf_unsupported_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type ppc_elf_got16_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
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PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
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static void powerpc_info_to_howto
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PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst));
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#define USE_RELA
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enum reloc_type
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{
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R_PPC_NONE = 0, /* 0 */
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R_PPC_ADDR32, /* 1 */
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R_PPC_ADDR24, /* 2 */
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R_PPC_ADDR16, /* 3 */
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R_PPC_ADDR16_LO, /* 4 */
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R_PPC_ADDR16_HI, /* 5 */
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R_PPC_ADDR16_HA, /* 6 */
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R_PPC_ADDR14, /* 7 */
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R_PPC_ADDR14_BRTAKEN, /* 8 */
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R_PPC_ADDR14_BRNTAKEN, /* 9 */
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R_PPC_REL24, /* 10 */
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R_PPC_REL14, /* 11 */
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R_PPC_REL14_BRTAKEN, /* 12 */
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R_PPC_REL14_BRNTAKEN, /* 13 */
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R_PPC_GOT16, /* 14 */
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R_PPC_GOT16_LO, /* 15 */
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R_PPC_GOT16_HI, /* 16 */
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R_PPC_GOT16_HA, /* 17 */
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R_PPC_PLT24, /* 18 */
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R_PPC_COPY, /* 19 */
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R_PPC_GLOB_DAT, /* 20 -- not in final System V spec */
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R_PPC_JMP_SLOT, /* 21 */
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R_PPC_RELATIVE, /* 22 */
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R_PPC_LOCAL24PC, /* 23 */
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R_PPC_UADDR32, /* 24 */
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R_PPC_UADDR16, /* 25 */
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R_PPC_REL32, /* 26 */
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R_PPC_PLT32, /* 27 */
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R_PPC_PLTREL32, /* 28 */
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R_PPC_PLT16_LO, /* 29 */
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R_PPC_PLT16_HI, /* 30 */
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R_PPC_PLT16_HA, /* 31 */
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R_PPC_SDAREL, /* 32 */
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/* Relocations added by Sun. */
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R_PPC_SECTOFF, /* 33 */
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R_PPC_SECTOFF_LO, /* 34 */
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R_PPC_SECTOFF_HI, /* 35 */
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R_PPC_SECTOFF_HA, /* 36 */
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/* The remaining relocs are from the Embedded ELF ABI, and are not
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in the SVR4 ELF ABI. */
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R_PPC_EMB_NADDR32 = 101, /* 101 */
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R_PPC_EMB_NADDR16, /* 102 */
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R_PPC_EMB_NADDR16_LO, /* 103 */
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R_PPC_EMB_NADDR16_HI, /* 104 */
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R_PPC_EMB_NADDR16_HA, /* 105 */
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R_PPC_EMB_SDAI16, /* 106 */
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R_PPC_EMB_SDA2I16, /* 107 */
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R_PPC_EMB_SDA2REL, /* 108 */
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R_PPC_EMB_SDA21, /* 109 */
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R_PPC_EMB_MRKREF, /* 110 */
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R_PPC_EMB_RELSEC16, /* 111 */
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R_PPC_EMB_RELST_LO, /* 112 */
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R_PPC_EMB_RELST_HI, /* 113 */
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R_PPC_EMB_RELST_HA, /* 114 */
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R_PPC_EMB_BIT_FLD, /* 115 */
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R_PPC_EMB_RELSDA, /* 116 */
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R_PPC_max
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};
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static reloc_howto_type elf_powerpc_howto_table[] =
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{
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/* This reloc does nothing. */
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HOWTO (R_PPC_NONE, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_NONE", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false), /* pcrel_offset */
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/* A standard 32 bit relocation. */
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HOWTO (R_PPC_ADDR32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_ADDR32", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* An absolute 26 bit branch; the lower two bits must be zero.
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FIXME: we don't check that, we just clear them. */
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HOWTO (R_PPC_ADDR24, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_ADDR24", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0x3fffffc, /* dst_mask */
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false), /* pcrel_offset */
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/* A standard 16 bit relocation. */
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HOWTO (R_PPC_ADDR16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_ADDR16", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 16 bit relocation without overflow. */
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HOWTO (R_PPC_ADDR16_LO, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_ADDR16_LO", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* The high order 16 bits of an address. */
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HOWTO (R_PPC_ADDR16_HI, /* type */
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16, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_ADDR16_HI", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* The high order 16 bits of an address, plus 1 if the contents of
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the low 16 bits, treated as a signed number, is negative. */
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HOWTO (R_PPC_ADDR16_HA, /* type */
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16, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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ppc_elf_addr16_ha_reloc, /* special_function */
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"R_PPC_ADDR16_HA", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* An absolute 16 bit branch; the lower two bits must be zero.
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FIXME: we don't check that, we just clear them. */
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HOWTO (R_PPC_ADDR14, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_ADDR14", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xfffc, /* dst_mask */
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false), /* pcrel_offset */
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/* An absolute 16 bit branch, for which bit 10 should be set to
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indicate that the branch is expected to be taken. The lower two
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bits must be zero. */
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HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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ppc_elf_unsupported_reloc, /* special_function */
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"R_PPC_ADDR14_BRTAKEN",/* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xfffc, /* dst_mask */
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false), /* pcrel_offset */
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/* An absolute 16 bit branch, for which bit 10 should be set to
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indicate that the branch is not expected to be taken. The lower
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two bits must be zero. */
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HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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ppc_elf_unsupported_reloc, /* special_function */
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"R_PPC_ADDR14_BRNTAKEN",/* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xfffc, /* dst_mask */
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false), /* pcrel_offset */
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/* A relative 26 bit branch; the lower two bits must be zero. */
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HOWTO (R_PPC_REL24, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_REL24", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0x3fffffc, /* dst_mask */
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true), /* pcrel_offset */
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/* A relative 16 bit branch; the lower two bits must be zero. */
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HOWTO (R_PPC_REL14, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_REL14", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xfffc, /* dst_mask */
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true), /* pcrel_offset */
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/* A relative 16 bit branch. Bit 10 should be set to indicate that
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the branch is expected to be taken. The lower two bits must be
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zero. */
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HOWTO (R_PPC_REL14_BRTAKEN, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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ppc_elf_unsupported_reloc, /* special_function */
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"R_PPC_REL14_BRTAKEN", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xfffc, /* dst_mask */
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true), /* pcrel_offset */
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/* A relative 16 bit branch. Bit 10 should be set to indicate that
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the branch is not expected to be taken. The lower two bits must
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be zero. */
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HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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ppc_elf_unsupported_reloc, /* special_function */
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"R_PPC_REL14_BRNTAKEN",/* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xfffc, /* dst_mask */
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true), /* pcrel_offset */
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/* Like R_PPC_ADDR16, but referring to the GOT table entry for the
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symbol. */
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HOWTO (R_PPC_GOT16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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ppc_elf_got16_reloc, /* special_function */
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"R_PPC_GOT16", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
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the symbol. */
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HOWTO (R_PPC_GOT16_LO, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
|
||||
false, /* pc_relative */
|
||||
0, /* bitpos */
|
||||
complain_overflow_bitfield, /* complain_on_overflow */
|
||||
ppc_elf_got16_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 */
|
||||
ppc_elf_got16_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. FIXME: Not supported. */
|
||||
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 */
|
||||
ppc_elf_unsupported_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_PLT24, /* 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_PLT24", /* 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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_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_SDAREL, /* type */
|
||||
0, /* rightshift */
|
||||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||||
16, /* bitsize */
|
||||
false, /* pc_relative */
|
||||
0, /* bitpos */
|
||||
complain_overflow_bitfield, /* complain_on_overflow */
|
||||
ppc_elf_unsupported_reloc, /* special_function */
|
||||
"R_PPC_SDAREL", /* name */
|
||||
false, /* partial_inplace */
|
||||
0, /* src_mask */
|
||||
0xffff, /* dst_mask */
|
||||
false), /* pcrel_offset */
|
||||
|
||||
/* These next 4 relocations were added by Sun. */
|
||||
/* 32-bit section relative relocation. FIXME: not supported. */
|
||||
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 */
|
||||
ppc_elf_unsupported_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. FIXME: not supported. */
|
||||
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 */
|
||||
ppc_elf_unsupported_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. FIXME: not supported. */
|
||||
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 */
|
||||
ppc_elf_unsupported_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. FIXME: not supported. */
|
||||
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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_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 */
|
||||
ppc_elf_unsupported_reloc, /* special_function */
|
||||
"R_PPC_EMB_NADDR16_HA", /* name */
|
||||
false, /* partial_inplace */
|
||||
0, /* src_mask */
|
||||
0xffff, /* dst_mask */
|
||||
false), /* pcrel_offset */
|
||||
};
|
||||
|
||||
/* Don't pretend we can deal with unsupported relocs. */
|
||||
|
||||
/*ARGSUSED*/
|
||||
static bfd_reloc_status_type
|
||||
ppc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||||
output_bfd, error_message)
|
||||
bfd *abfd;
|
||||
arelent *reloc_entry;
|
||||
asymbol *symbol;
|
||||
PTR data;
|
||||
asection *input_section;
|
||||
bfd *output_bfd;
|
||||
char **error_message;
|
||||
{
|
||||
abort ();
|
||||
}
|
||||
|
||||
/* Handle the ADDR16_HA reloc by adjusting the reloc addend. */
|
||||
|
||||
static bfd_reloc_status_type
|
||||
ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||||
output_bfd, error_message)
|
||||
bfd *abfd;
|
||||
arelent *reloc_entry;
|
||||
asymbol *symbol;
|
||||
PTR data;
|
||||
asection *input_section;
|
||||
bfd *output_bfd;
|
||||
char **error_message;
|
||||
{
|
||||
bfd_vma relocation;
|
||||
|
||||
if (output_bfd != (bfd *) NULL)
|
||||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||||
input_section, output_bfd, error_message);
|
||||
|
||||
if (bfd_is_com_section (symbol->section))
|
||||
relocation = 0;
|
||||
else
|
||||
relocation = symbol->value;
|
||||
|
||||
relocation += (symbol->section->output_section->vma
|
||||
+ symbol->section->output_offset
|
||||
+ reloc_entry->addend);
|
||||
|
||||
if ((relocation & 0x8000) != 0)
|
||||
reloc_entry->addend += 0x10000;
|
||||
|
||||
return bfd_reloc_continue;
|
||||
}
|
||||
|
||||
/* Handle the GOT16 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. When and if we support PIC code, we will have to
|
||||
change this, perhaps by switching off on the e_type field. */
|
||||
|
||||
static bfd_reloc_status_type
|
||||
ppc_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||||
output_bfd, error_message)
|
||||
bfd *abfd;
|
||||
arelent *reloc_entry;
|
||||
asymbol *symbol;
|
||||
PTR data;
|
||||
asection *input_section;
|
||||
bfd *output_bfd;
|
||||
char **error_message;
|
||||
{
|
||||
asection *sec;
|
||||
|
||||
if (output_bfd != (bfd *) NULL)
|
||||
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||||
input_section, output_bfd, error_message);
|
||||
|
||||
sec = bfd_get_section (*reloc_entry->sym_ptr_ptr);
|
||||
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);
|
||||
reloc_entry->addend -= sec->output_section->vma;
|
||||
return bfd_reloc_continue;
|
||||
}
|
||||
|
||||
/* Map BFD reloc types to PowerPC ELF reloc types. */
|
||||
|
||||
struct powerpc_reloc_map
|
||||
{
|
||||
unsigned char bfd_reloc_val;
|
||||
unsigned char elf_reloc_val;
|
||||
};
|
||||
|
||||
static const struct powerpc_reloc_map powerpc_reloc_map[] =
|
||||
{
|
||||
{ BFD_RELOC_NONE, R_PPC_NONE, },
|
||||
{ BFD_RELOC_32, R_PPC_ADDR32 },
|
||||
{ BFD_RELOC_32_PCREL, R_PPC_REL32 },
|
||||
{ BFD_RELOC_CTOR, R_PPC_ADDR32 },
|
||||
{ BFD_RELOC_PPC_B26, R_PPC_REL24 },
|
||||
{ BFD_RELOC_PPC_BA26, R_PPC_ADDR24 },
|
||||
{ BFD_RELOC_PPC_TOC16, R_PPC_GOT16 },
|
||||
{ BFD_RELOC_LO16, R_PPC_ADDR16_LO },
|
||||
{ BFD_RELOC_HI16, R_PPC_ADDR16_HI },
|
||||
{ BFD_RELOC_HI16_S, R_PPC_ADDR16_HA }
|
||||
};
|
||||
|
||||
static reloc_howto_type *
|
||||
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
|
||||
bfd *abfd;
|
||||
bfd_reloc_code_real_type code;
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0;
|
||||
i < sizeof (powerpc_reloc_map) / sizeof (struct powerpc_reloc_map);
|
||||
i++)
|
||||
{
|
||||
if (powerpc_reloc_map[i].bfd_reloc_val == code)
|
||||
return &elf_powerpc_howto_table[powerpc_reloc_map[i].elf_reloc_val];
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Set the howto pointer for a PowerPC ELF reloc. */
|
||||
|
||||
static void
|
||||
powerpc_info_to_howto (abfd, cache_ptr, dst)
|
||||
bfd *abfd;
|
||||
arelent *cache_ptr;
|
||||
Elf32_Internal_Rela *dst;
|
||||
{
|
||||
BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
|
||||
cache_ptr->howto = &elf_powerpc_howto_table[ELF32_R_TYPE (dst->r_info)];
|
||||
}
|
||||
|
||||
#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 powerpc_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
|
||||
|
||||
#include "elf32-target.h"
|
||||
Loading…
Reference in New Issue