152 lines
4.8 KiB
C
152 lines
4.8 KiB
C
/* Intel 960 specific support for 32-bit ELF
|
|
Copyright 1999, 2000, 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
|
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "libbfd.h"
|
|
#include "elf-bfd.h"
|
|
#include "elf/i960.h"
|
|
|
|
#define USE_REL 1
|
|
|
|
#define bfd_elf32_bfd_reloc_type_lookup elf32_i960_reloc_type_lookup
|
|
#define elf_info_to_howto elf32_i960_info_to_howto
|
|
#define elf_info_to_howto_rel elf32_i960_info_to_howto_rel
|
|
|
|
/* ELF relocs are against symbols. If we are producing relocatable
|
|
output, and the reloc is against an external symbol, and nothing
|
|
has given us any additional addend, the resulting reloc will also
|
|
be against the same symbol. In such a case, we don't want to
|
|
change anything about the way the reloc is handled, since it will
|
|
all be done at final link time. Rather than put special case code
|
|
into bfd_perform_relocation, all the reloc types use this howto
|
|
function. It just short circuits the reloc if producing
|
|
relocatable output against an external symbol. */
|
|
|
|
static bfd_reloc_status_type
|
|
elf32_i960_relocate (bfd *abfd ATTRIBUTE_UNUSED,
|
|
arelent *reloc_entry,
|
|
asymbol *symbol,
|
|
PTR data ATTRIBUTE_UNUSED,
|
|
asection *input_section,
|
|
bfd *output_bfd,
|
|
char **error_message ATTRIBUTE_UNUSED)
|
|
{
|
|
/* HACK: I think this first condition is necessary when producing
|
|
relocatable output. After the end of HACK, the code is identical
|
|
to bfd_elf_generic_reloc(). I would _guess_ the first change
|
|
belongs there rather than here. martindo 1998-10-23. */
|
|
if (output_bfd != (bfd *) NULL
|
|
&& reloc_entry->howto->pc_relative
|
|
&& !reloc_entry->howto->pcrel_offset)
|
|
reloc_entry->addend -= symbol->value;
|
|
|
|
/* This is more dubious. */
|
|
else if (output_bfd != (bfd *) NULL
|
|
&& (symbol->flags & BSF_SECTION_SYM) != 0)
|
|
reloc_entry->addend -= symbol->section->output_section->vma;
|
|
|
|
else
|
|
{
|
|
/* ...end of HACK. */
|
|
if (output_bfd != (bfd *) NULL
|
|
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
|
&& (! reloc_entry->howto->partial_inplace
|
|
|| reloc_entry->addend == 0))
|
|
{
|
|
reloc_entry->address += input_section->output_offset;
|
|
return bfd_reloc_ok;
|
|
}
|
|
}
|
|
|
|
return bfd_reloc_continue;
|
|
}
|
|
|
|
static reloc_howto_type elf_howto_table[]=
|
|
{
|
|
HOWTO (R_960_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
|
|
elf32_i960_relocate, "R_960_NONE", TRUE,
|
|
0x00000000, 0x00000000, FALSE),
|
|
EMPTY_HOWTO (1),
|
|
HOWTO (R_960_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
|
|
elf32_i960_relocate, "R_960_32", TRUE,
|
|
0xffffffff, 0xffffffff, FALSE),
|
|
HOWTO (R_960_IP24, 0, 2, 24, TRUE, 0, complain_overflow_signed,
|
|
elf32_i960_relocate, "R_960_IP24 ", TRUE,
|
|
0x00ffffff, 0x00ffffff, FALSE),
|
|
EMPTY_HOWTO (4),
|
|
EMPTY_HOWTO (5),
|
|
EMPTY_HOWTO (6),
|
|
EMPTY_HOWTO (7)
|
|
};
|
|
|
|
static enum elf_i960_reloc_type
|
|
elf32_i960_bfd_to_reloc_type (bfd_reloc_code_real_type code)
|
|
{
|
|
switch (code)
|
|
{
|
|
default:
|
|
return R_960_NONE;
|
|
case BFD_RELOC_I960_CALLJ:
|
|
return R_960_OPTCALL;
|
|
case BFD_RELOC_32:
|
|
case BFD_RELOC_CTOR:
|
|
return R_960_32;
|
|
case BFD_RELOC_24_PCREL:
|
|
return R_960_IP24;
|
|
}
|
|
}
|
|
|
|
static void
|
|
elf32_i960_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
|
|
arelent * cache_ptr ATTRIBUTE_UNUSED,
|
|
Elf_Internal_Rela * dst ATTRIBUTE_UNUSED)
|
|
{
|
|
abort ();
|
|
}
|
|
|
|
static void
|
|
elf32_i960_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
|
|
arelent *cache_ptr,
|
|
Elf_Internal_Rela *dst)
|
|
{
|
|
enum elf_i960_reloc_type type;
|
|
|
|
type = (enum elf_i960_reloc_type) ELF32_R_TYPE (dst->r_info);
|
|
BFD_ASSERT (type < R_960_max);
|
|
|
|
cache_ptr->howto = &elf_howto_table[(int) type];
|
|
}
|
|
|
|
static reloc_howto_type *
|
|
elf32_i960_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
|
bfd_reloc_code_real_type code)
|
|
{
|
|
return elf_howto_table + elf32_i960_bfd_to_reloc_type (code);
|
|
}
|
|
|
|
#define TARGET_LITTLE_SYM bfd_elf32_i960_vec
|
|
#define TARGET_LITTLE_NAME "elf32-i960"
|
|
#define ELF_ARCH bfd_arch_i960
|
|
#define ELF_MACHINE_CODE EM_960
|
|
#define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */
|
|
|
|
#include "elf32-target.h"
|