/* Intel 960 specific support for 32-bit ELF
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/* Intel 960 specific support for 32-bit ELF
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Copyright 1999, 2000, 2001, 2002, 2003, 2005, 2007
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Copyright 1999, 2000, 2001, 2002, 2003, 2005, 2007
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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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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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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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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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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(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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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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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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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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf-bfd.h"
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#include "elf/i960.h"
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#include "elf/i960.h"
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#define USE_REL 1
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#define USE_REL 1
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#define bfd_elf32_bfd_reloc_type_lookup elf32_i960_reloc_type_lookup
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#define bfd_elf32_bfd_reloc_type_lookup elf32_i960_reloc_type_lookup
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#define bfd_elf32_bfd_reloc_name_lookup \
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#define bfd_elf32_bfd_reloc_name_lookup \
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elf32_i960_reloc_name_lookup
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elf32_i960_reloc_name_lookup
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#define elf_info_to_howto elf32_i960_info_to_howto
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#define elf_info_to_howto elf32_i960_info_to_howto
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#define elf_info_to_howto_rel elf32_i960_info_to_howto_rel
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#define elf_info_to_howto_rel elf32_i960_info_to_howto_rel
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/* ELF relocs are against symbols. If we are producing relocatable
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/* ELF relocs are against symbols. If we are producing relocatable
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output, and the reloc is against an external symbol, and nothing
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output, and the reloc is against an external symbol, and nothing
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has given us any additional addend, the resulting reloc will also
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has given us any additional addend, the resulting reloc will also
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be against the same symbol. In such a case, we don't want to
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be against the same symbol. In such a case, we don't want to
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change anything about the way the reloc is handled, since it will
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change anything about the way the reloc is handled, since it will
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all be done at final link time. Rather than put special case code
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all be done at final link time. Rather than put special case code
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into bfd_perform_relocation, all the reloc types use this howto
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into bfd_perform_relocation, all the reloc types use this howto
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function. It just short circuits the reloc if producing
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function. It just short circuits the reloc if producing
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relocatable output against an external symbol. */
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relocatable output against an external symbol. */
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static bfd_reloc_status_type
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static bfd_reloc_status_type
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elf32_i960_relocate (bfd *abfd ATTRIBUTE_UNUSED,
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elf32_i960_relocate (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *reloc_entry,
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arelent *reloc_entry,
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asymbol *symbol,
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asymbol *symbol,
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PTR data ATTRIBUTE_UNUSED,
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PTR data ATTRIBUTE_UNUSED,
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asection *input_section,
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asection *input_section,
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bfd *output_bfd,
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bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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char **error_message ATTRIBUTE_UNUSED)
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{
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{
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/* HACK: I think this first condition is necessary when producing
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/* HACK: I think this first condition is necessary when producing
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relocatable output. After the end of HACK, the code is identical
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relocatable output. After the end of HACK, the code is identical
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to bfd_elf_generic_reloc(). I would _guess_ the first change
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to bfd_elf_generic_reloc(). I would _guess_ the first change
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belongs there rather than here. martindo 1998-10-23. */
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belongs there rather than here. martindo 1998-10-23. */
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if (output_bfd != (bfd *) NULL
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if (output_bfd != (bfd *) NULL
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&& reloc_entry->howto->pc_relative
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&& reloc_entry->howto->pc_relative
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&& !reloc_entry->howto->pcrel_offset)
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&& !reloc_entry->howto->pcrel_offset)
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reloc_entry->addend -= symbol->value;
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reloc_entry->addend -= symbol->value;
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/* This is more dubious. */
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/* This is more dubious. */
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else if (output_bfd != (bfd *) NULL
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else if (output_bfd != (bfd *) NULL
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&& (symbol->flags & BSF_SECTION_SYM) != 0)
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&& (symbol->flags & BSF_SECTION_SYM) != 0)
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reloc_entry->addend -= symbol->section->output_section->vma;
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reloc_entry->addend -= symbol->section->output_section->vma;
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else
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else
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{
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{
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/* ...end of HACK. */
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/* ...end of HACK. */
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if (output_bfd != (bfd *) NULL
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if (output_bfd != (bfd *) NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& (! reloc_entry->howto->partial_inplace
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&& (! reloc_entry->howto->partial_inplace
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|| reloc_entry->addend == 0))
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|| reloc_entry->addend == 0))
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{
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{
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reloc_entry->address += input_section->output_offset;
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
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return bfd_reloc_ok;
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}
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}
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}
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}
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return bfd_reloc_continue;
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return bfd_reloc_continue;
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}
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}
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static reloc_howto_type elf_howto_table[]=
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static reloc_howto_type elf_howto_table[]=
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{
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{
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HOWTO (R_960_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
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HOWTO (R_960_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
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elf32_i960_relocate, "R_960_NONE", TRUE,
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elf32_i960_relocate, "R_960_NONE", TRUE,
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0x00000000, 0x00000000, FALSE),
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0x00000000, 0x00000000, FALSE),
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EMPTY_HOWTO (1),
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EMPTY_HOWTO (1),
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HOWTO (R_960_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
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HOWTO (R_960_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
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elf32_i960_relocate, "R_960_32", TRUE,
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elf32_i960_relocate, "R_960_32", TRUE,
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0xffffffff, 0xffffffff, FALSE),
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0xffffffff, 0xffffffff, FALSE),
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HOWTO (R_960_IP24, 0, 2, 24, TRUE, 0, complain_overflow_signed,
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HOWTO (R_960_IP24, 0, 2, 24, TRUE, 0, complain_overflow_signed,
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elf32_i960_relocate, "R_960_IP24 ", TRUE,
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elf32_i960_relocate, "R_960_IP24 ", TRUE,
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0x00ffffff, 0x00ffffff, FALSE),
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0x00ffffff, 0x00ffffff, FALSE),
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EMPTY_HOWTO (4),
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EMPTY_HOWTO (4),
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EMPTY_HOWTO (5),
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EMPTY_HOWTO (5),
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EMPTY_HOWTO (6),
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EMPTY_HOWTO (6),
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EMPTY_HOWTO (7)
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EMPTY_HOWTO (7)
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};
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};
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static enum elf_i960_reloc_type
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static enum elf_i960_reloc_type
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elf32_i960_bfd_to_reloc_type (bfd_reloc_code_real_type code)
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elf32_i960_bfd_to_reloc_type (bfd_reloc_code_real_type code)
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{
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{
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switch (code)
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switch (code)
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{
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{
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default:
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default:
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return R_960_NONE;
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return R_960_NONE;
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case BFD_RELOC_I960_CALLJ:
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case BFD_RELOC_I960_CALLJ:
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return R_960_OPTCALL;
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return R_960_OPTCALL;
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case BFD_RELOC_32:
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case BFD_RELOC_32:
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case BFD_RELOC_CTOR:
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case BFD_RELOC_CTOR:
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return R_960_32;
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return R_960_32;
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case BFD_RELOC_24_PCREL:
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case BFD_RELOC_24_PCREL:
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return R_960_IP24;
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return R_960_IP24;
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}
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}
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}
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}
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static void
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static void
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elf32_i960_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
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elf32_i960_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
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arelent * cache_ptr ATTRIBUTE_UNUSED,
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arelent * cache_ptr ATTRIBUTE_UNUSED,
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Elf_Internal_Rela * dst ATTRIBUTE_UNUSED)
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Elf_Internal_Rela * dst ATTRIBUTE_UNUSED)
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{
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{
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abort ();
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abort ();
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}
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}
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static void
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static void
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elf32_i960_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
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elf32_i960_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *cache_ptr,
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arelent *cache_ptr,
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Elf_Internal_Rela *dst)
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Elf_Internal_Rela *dst)
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{
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{
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enum elf_i960_reloc_type type;
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enum elf_i960_reloc_type type;
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type = (enum elf_i960_reloc_type) ELF32_R_TYPE (dst->r_info);
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type = (enum elf_i960_reloc_type) ELF32_R_TYPE (dst->r_info);
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BFD_ASSERT (type < R_960_max);
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BFD_ASSERT (type < R_960_max);
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cache_ptr->howto = &elf_howto_table[(int) type];
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cache_ptr->howto = &elf_howto_table[(int) type];
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}
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}
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static reloc_howto_type *
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static reloc_howto_type *
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elf32_i960_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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elf32_i960_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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bfd_reloc_code_real_type code)
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bfd_reloc_code_real_type code)
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{
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{
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return elf_howto_table + elf32_i960_bfd_to_reloc_type (code);
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return elf_howto_table + elf32_i960_bfd_to_reloc_type (code);
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}
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}
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static reloc_howto_type *
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static reloc_howto_type *
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elf32_i960_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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elf32_i960_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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const char *r_name)
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const char *r_name)
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{
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{
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unsigned int i;
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unsigned int i;
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for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
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for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
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if (elf_howto_table[i].name != NULL
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if (elf_howto_table[i].name != NULL
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&& strcasecmp (elf_howto_table[i].name, r_name) == 0)
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&& strcasecmp (elf_howto_table[i].name, r_name) == 0)
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return &elf_howto_table[i];
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return &elf_howto_table[i];
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return NULL;
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return NULL;
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}
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}
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#define TARGET_LITTLE_SYM bfd_elf32_i960_vec
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#define TARGET_LITTLE_SYM bfd_elf32_i960_vec
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#define TARGET_LITTLE_NAME "elf32-i960"
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#define TARGET_LITTLE_NAME "elf32-i960"
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#define ELF_ARCH bfd_arch_i960
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#define ELF_ARCH bfd_arch_i960
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#define ELF_MACHINE_CODE EM_960
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#define ELF_MACHINE_CODE EM_960
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#define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */
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#define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */
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#include "elf32-target.h"
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#include "elf32-target.h"
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