2009-04-16 17:39:48 +02:00
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/* moxie-specific support for 32-bit ELF.
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2014-03-05 12:46:15 +01:00
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Copyright (C) 2009-2014 Free Software Foundation, Inc.
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2009-04-16 17:39:48 +02:00
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Copied from elf32-fr30.c which is..
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2014-03-05 12:46:15 +01:00
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Copyright (C) 1998-2014 Free Software Foundation, Inc.
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2009-04-16 17:39:48 +02:00
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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 3 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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/moxie.h"
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/* Forward declarations. */
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static reloc_howto_type moxie_elf_howto_table [] =
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{
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/* This reloc does nothing. */
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HOWTO (R_MOXIE_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_MOXIE_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 32 bit absolute relocation. */
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HOWTO (R_MOXIE_32, /* 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_MOXIE_32", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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2009-06-11 13:27:58 +02:00
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/* A 10 bit PC-relative relocation. */
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HOWTO (R_MOXIE_PCREL10, /* type. */
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1, /* rightshift. */
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1, /* size (0 = byte, 1 = short, 2 = long). */
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10, /* 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_MOXIE_PCREL10", /* name. */
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FALSE, /* partial_inplace. */
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0, /* src_mask. */
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0x000003FF, /* dst_mask. */
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TRUE), /* pcrel_offset. */
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2009-04-16 17:39:48 +02:00
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};
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/* Map BFD reloc types to MOXIE ELF reloc types. */
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struct moxie_reloc_map
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{
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bfd_reloc_code_real_type bfd_reloc_val;
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unsigned int moxie_reloc_val;
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};
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static const struct moxie_reloc_map moxie_reloc_map [] =
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{
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2009-06-11 13:27:58 +02:00
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{ BFD_RELOC_NONE, R_MOXIE_NONE },
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{ BFD_RELOC_32, R_MOXIE_32 },
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{ BFD_RELOC_MOXIE_10_PCREL, R_MOXIE_PCREL10 },
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2009-04-16 17:39:48 +02:00
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};
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static reloc_howto_type *
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moxie_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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bfd_reloc_code_real_type code)
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{
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unsigned int i;
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for (i = sizeof (moxie_reloc_map) / sizeof (moxie_reloc_map[0]);
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--i;)
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if (moxie_reloc_map [i].bfd_reloc_val == code)
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return & moxie_elf_howto_table [moxie_reloc_map[i].moxie_reloc_val];
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return NULL;
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}
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static reloc_howto_type *
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moxie_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
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{
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unsigned int i;
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for (i = 0;
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i < sizeof (moxie_elf_howto_table) / sizeof (moxie_elf_howto_table[0]);
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i++)
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if (moxie_elf_howto_table[i].name != NULL
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&& strcasecmp (moxie_elf_howto_table[i].name, r_name) == 0)
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return &moxie_elf_howto_table[i];
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return NULL;
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}
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/* Set the howto pointer for an MOXIE ELF reloc. */
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static void
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moxie_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *cache_ptr,
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Elf_Internal_Rela *dst)
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{
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unsigned int r_type;
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r_type = ELF32_R_TYPE (dst->r_info);
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BFD_ASSERT (r_type < (unsigned int) R_MOXIE_max);
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cache_ptr->howto = & moxie_elf_howto_table [r_type];
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}
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/* Perform a single relocation. By default we use the standard BFD
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routines, but a few relocs, we have to do them ourselves. */
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static bfd_reloc_status_type
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moxie_final_link_relocate (reloc_howto_type *howto,
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bfd *input_bfd,
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asection *input_section,
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bfd_byte *contents,
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Elf_Internal_Rela *rel,
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bfd_vma relocation)
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{
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bfd_reloc_status_type r = bfd_reloc_ok;
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switch (howto->type)
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{
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default:
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r = _bfd_final_link_relocate (howto, input_bfd, input_section,
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contents, rel->r_offset,
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relocation, rel->r_addend);
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}
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return r;
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}
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/* Relocate an MOXIE ELF section.
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The RELOCATE_SECTION function is called by the new ELF backend linker
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to handle the relocations for a section.
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The relocs are always passed as Rela structures; if the section
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actually uses Rel structures, the r_addend field will always be
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zero.
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This function is responsible for adjusting the section contents as
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necessary, and (if using Rela relocs and generating a relocatable
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output file) adjusting the reloc addend as necessary.
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This function does not have to worry about setting the reloc
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address or the reloc symbol index.
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LOCAL_SYMS is a pointer to the swapped in local symbols.
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LOCAL_SECTIONS is an array giving the section in the input file
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corresponding to the st_shndx field of each local symbol.
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The global hash table entry for the global symbols can be found
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via elf_sym_hashes (input_bfd).
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When generating relocatable output, this function must handle
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STB_LOCAL/STT_SECTION symbols specially. The output symbol is
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going to be the section symbol corresponding to the output
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section, which means that the addend must be adjusted
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accordingly. */
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static bfd_boolean
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moxie_elf_relocate_section (bfd *output_bfd,
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struct bfd_link_info *info,
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bfd *input_bfd,
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asection *input_section,
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bfd_byte *contents,
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Elf_Internal_Rela *relocs,
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Elf_Internal_Sym *local_syms,
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asection **local_sections)
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{
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Elf_Internal_Shdr *symtab_hdr;
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struct elf_link_hash_entry **sym_hashes;
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Elf_Internal_Rela *rel;
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Elf_Internal_Rela *relend;
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symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
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sym_hashes = elf_sym_hashes (input_bfd);
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relend = relocs + input_section->reloc_count;
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for (rel = relocs; rel < relend; rel ++)
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{
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reloc_howto_type *howto;
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unsigned long r_symndx;
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Elf_Internal_Sym *sym;
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asection *sec;
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struct elf_link_hash_entry *h;
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bfd_vma relocation;
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bfd_reloc_status_type r;
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const char *name;
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int r_type;
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r_type = ELF32_R_TYPE (rel->r_info);
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r_symndx = ELF32_R_SYM (rel->r_info);
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2010-06-27 06:07:55 +02:00
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howto = moxie_elf_howto_table + r_type;
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2009-04-16 17:39:48 +02:00
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h = NULL;
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sym = NULL;
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sec = NULL;
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if (r_symndx < symtab_hdr->sh_info)
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{
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sym = local_syms + r_symndx;
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sec = local_sections [r_symndx];
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relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
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name = bfd_elf_string_from_elf_section
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(input_bfd, symtab_hdr->sh_link, sym->st_name);
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name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
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}
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else
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{
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2013-11-05 19:29:44 +01:00
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bfd_boolean unresolved_reloc, warned, ignored;
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2009-04-16 17:39:48 +02:00
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RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
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r_symndx, symtab_hdr, sym_hashes,
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h, sec, relocation,
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2013-11-05 19:29:44 +01:00
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unresolved_reloc, warned, ignored);
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2009-04-16 17:39:48 +02:00
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name = h->root.root.string;
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}
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PR ld/13991
bfd/
* bfd/elf-bfd.h (_bfd_elf_link_just_syms): Define as
_bfd_generic_link_just_syms.
* bfd/elflink.c (_bfd_elf_link_just_syms): Delete.
* bfd/linker.c (_bfd_generic_link_just_syms): Set sec_info_type.
* bfd/bfd-in.h (discarded_section): Renamed from elf_discarded_section.
* bfd/section.c (SEC_INFO_TYPE_NONE, SEC_INFO_TYPE_STABS,
SEC_INFO_TYPE_MERGE, SEC_INFO_TYPE_EH_FRAME,
SEC_INFO_TYPE_JUST_SYMS): Renamed from corresponding ELF_INFO_TYPE.
* bfd/elf-eh-frame.c, * bfd/elf-m10200.c, * bfd/elf-m10300.c,
* bfd/elf.c, * bfd/elf32-arm.c, * bfd/elf32-avr.c, * bfd/elf32-bfin.c,
* bfd/elf32-cr16.c, * bfd/elf32-cr16c.c, * bfd/elf32-cris.c,
* bfd/elf32-crx.c, * bfd/elf32-d10v.c, * bfd/elf32-epiphany.c,
* bfd/elf32-fr30.c, * bfd/elf32-frv.c, * bfd/elf32-h8300.c,
* bfd/elf32-hppa.c, * bfd/elf32-i370.c, * bfd/elf32-i386.c,
* bfd/elf32-i860.c, * bfd/elf32-ip2k.c, * bfd/elf32-iq2000.c,
* bfd/elf32-lm32.c, * bfd/elf32-m32c.c, * bfd/elf32-m32r.c,
* bfd/elf32-m68hc1x.c, * bfd/elf32-m68k.c, * bfd/elf32-mcore.c,
* bfd/elf32-mep.c, * bfd/elf32-moxie.c, * bfd/elf32-msp430.c,
* bfd/elf32-mt.c, * bfd/elf32-openrisc.c, * bfd/elf32-ppc.c,
* bfd/elf32-rl78.c, * bfd/elf32-rx.c, * bfd/elf32-s390.c,
* bfd/elf32-score.c, * bfd/elf32-score7.c, * bfd/elf32-sh.c,
* bfd/elf32-spu.c, * bfd/elf32-tic6x.c, * bfd/elf32-tilepro.c,
* bfd/elf32-v850.c, * bfd/elf32-vax.c, * bfd/elf32-xc16x.c,
* bfd/elf32-xstormy16.c, * bfd/elf32-xtensa.c, * bfd/elf64-alpha.c,
* bfd/elf64-hppa.c, * bfd/elf64-ia64-vms.c, * bfd/elf64-mmix.c,
* bfd/elf64-ppc.c, * bfd/elf64-s390.c, * bfd/elf64-sh64.c,
* bfd/elf64-x86-64.c, * bfd/elflink.c, * bfd/elfnn-ia64.c,
* bfd/elfxx-mips.c, * bfd/elfxx-sparc.c, * bfd/elfxx-tilegx.c,
* bfd/reloc.c: Update all references.
* bfd/bfd-in2.h: Regenerate.
ld/
* ld/ldlang.c (size_input_section): Use sec_info_type rather than
usrdata->flags.just_syms.
* ld/ldwrite.c (build_link_order): Likewise.
* ld/emultempl/hppaelf.em (build_section_lists): Likewise.
* ld/emultempl/ppc64elf.em (build_toc_list): Likewise.
* ld/emultempl/armelf.em (build_section_lists): Likewise.
(after_allocation): Update for renamed sec_info_type value.
* ld/emultempl/tic6xdsbt.em: Likewise.
2012-04-24 07:12:40 +02:00
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if (sec != NULL && discarded_section (sec))
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2010-10-25 17:54:16 +02:00
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RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
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2012-05-07 05:27:52 +02:00
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rel, 1, relend, howto, 0, contents);
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2009-04-16 17:39:48 +02:00
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if (info->relocatable)
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continue;
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r = moxie_final_link_relocate (howto, input_bfd, input_section,
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contents, rel, relocation);
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|
|
|
|
|
|
|
|
|
if (r != bfd_reloc_ok)
|
|
|
|
|
{
|
|
|
|
|
const char * msg = NULL;
|
|
|
|
|
|
|
|
|
|
switch (r)
|
|
|
|
|
{
|
|
|
|
|
case bfd_reloc_overflow:
|
|
|
|
|
r = info->callbacks->reloc_overflow
|
|
|
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
|
|
|
|
(bfd_vma) 0, input_bfd, input_section, rel->r_offset);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_undefined:
|
|
|
|
|
r = info->callbacks->undefined_symbol
|
|
|
|
|
(info, name, input_bfd, input_section, rel->r_offset,
|
|
|
|
|
TRUE);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_outofrange:
|
|
|
|
|
msg = _("internal error: out of range error");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_notsupported:
|
|
|
|
|
msg = _("internal error: unsupported relocation error");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_dangerous:
|
|
|
|
|
msg = _("internal error: dangerous relocation");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
msg = _("internal error: unknown error");
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (msg)
|
|
|
|
|
r = info->callbacks->warning
|
|
|
|
|
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
|
|
|
|
|
|
|
|
|
if (! r)
|
|
|
|
|
return FALSE;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Return the section that should be marked against GC for a given
|
|
|
|
|
relocation. */
|
|
|
|
|
|
|
|
|
|
static asection *
|
|
|
|
|
moxie_elf_gc_mark_hook (asection *sec,
|
|
|
|
|
struct bfd_link_info *info,
|
|
|
|
|
Elf_Internal_Rela *rel,
|
|
|
|
|
struct elf_link_hash_entry *h,
|
|
|
|
|
Elf_Internal_Sym *sym)
|
|
|
|
|
{
|
|
|
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Look through the relocs for a section during the first phase.
|
|
|
|
|
Since we don't do .gots or .plts, we just need to consider the
|
|
|
|
|
virtual table relocs for gc. */
|
|
|
|
|
|
|
|
|
|
static bfd_boolean
|
|
|
|
|
moxie_elf_check_relocs (bfd *abfd,
|
|
|
|
|
struct bfd_link_info *info,
|
|
|
|
|
asection *sec,
|
|
|
|
|
const Elf_Internal_Rela *relocs)
|
|
|
|
|
{
|
|
|
|
|
Elf_Internal_Shdr *symtab_hdr;
|
|
|
|
|
struct elf_link_hash_entry **sym_hashes;
|
|
|
|
|
const Elf_Internal_Rela *rel;
|
|
|
|
|
const Elf_Internal_Rela *rel_end;
|
|
|
|
|
|
|
|
|
|
if (info->relocatable)
|
|
|
|
|
return TRUE;
|
|
|
|
|
|
|
|
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
|
|
|
|
sym_hashes = elf_sym_hashes (abfd);
|
|
|
|
|
|
|
|
|
|
rel_end = relocs + sec->reloc_count;
|
|
|
|
|
for (rel = relocs; rel < rel_end; rel++)
|
|
|
|
|
{
|
|
|
|
|
struct elf_link_hash_entry *h;
|
|
|
|
|
unsigned long r_symndx;
|
|
|
|
|
|
|
|
|
|
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];
|
|
|
|
|
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;
|
2013-03-30 11:14:15 +01:00
|
|
|
|
|
|
|
|
|
/* PR15323, ref flags aren't set for references in the same
|
|
|
|
|
object. */
|
|
|
|
|
h->root.non_ir_ref = 1;
|
2009-04-16 17:39:48 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#define ELF_ARCH bfd_arch_moxie
|
|
|
|
|
#define ELF_MACHINE_CODE EM_MOXIE
|
|
|
|
|
#define ELF_MAXPAGESIZE 0x1
|
|
|
|
|
|
2012-09-14 00:24:51 +02:00
|
|
|
|
#define TARGET_BIG_SYM bfd_elf32_bigmoxie_vec
|
|
|
|
|
#define TARGET_BIG_NAME "elf32-bigmoxie"
|
|
|
|
|
#define TARGET_LITTLE_SYM bfd_elf32_littlemoxie_vec
|
|
|
|
|
#define TARGET_LITTLE_NAME "elf32-littlemoxie"
|
2009-04-16 17:39:48 +02:00
|
|
|
|
|
|
|
|
|
#define elf_info_to_howto_rel NULL
|
|
|
|
|
#define elf_info_to_howto moxie_info_to_howto_rela
|
|
|
|
|
#define elf_backend_relocate_section moxie_elf_relocate_section
|
|
|
|
|
#define elf_backend_gc_mark_hook moxie_elf_gc_mark_hook
|
|
|
|
|
#define elf_backend_check_relocs moxie_elf_check_relocs
|
|
|
|
|
|
|
|
|
|
#define elf_backend_can_gc_sections 1
|
|
|
|
|
#define elf_backend_rela_normal 1
|
|
|
|
|
|
|
|
|
|
#define bfd_elf32_bfd_reloc_type_lookup moxie_reloc_type_lookup
|
|
|
|
|
#define bfd_elf32_bfd_reloc_name_lookup moxie_reloc_name_lookup
|
|
|
|
|
|
|
|
|
|
#include "elf32-target.h"
|