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/* SPARC-specific support for 32-bit ELF
Copyright 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "libelf.h"
static CONST struct reloc_howto_struct *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
static void elf_info_to_howto
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
static boolean elf32_sparc_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
enum reloc_type
{
R_SPARC_NONE = 0,
R_SPARC_8, R_SPARC_16, R_SPARC_32,
R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32,
R_SPARC_WDISP30, R_SPARC_WDISP22,
R_SPARC_HI22, R_SPARC_22,
R_SPARC_13, R_SPARC_LO10,
R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22,
R_SPARC_PC10, R_SPARC_PC22,
R_SPARC_WPLT30,
R_SPARC_COPY,
R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT,
R_SPARC_RELATIVE,
R_SPARC_UA32,
R_SPARC_max
};
#if 0
static CONST char *CONST reloc_type_names[] =
{
"R_SPARC_NONE",
"R_SPARC_8", "R_SPARC_16", "R_SPARC_32",
"R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32",
"R_SPARC_WDISP30", "R_SPARC_WDISP22",
"R_SPARC_HI22", "R_SPARC_22",
"R_SPARC_13", "R_SPARC_LO10",
"R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22",
"R_SPARC_PC10", "R_SPARC_PC22",
"R_SPARC_WPLT30",
"R_SPARC_COPY",
"R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT",
"R_SPARC_RELATIVE",
"R_SPARC_UA32",
};
#endif
static reloc_howto_type elf_sparc_howto_table[] =
{
HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_NONE", false,0,0x00000000,true),
HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_8", false,0,0x000000ff,true),
HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_16", false,0,0x0000ffff,true),
HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_32", false,0,0xffffffff,true),
HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_DISP8", false,0,0x000000ff,true),
HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_DISP16", false,0,0x0000ffff,true),
HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_DISP32", false,0,0x00ffffff,true),
HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_WDISP30", false,0,0x3fffffff,true),
HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_WDISP22", false,0,0x003fffff,true),
HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_HI22", false,0,0x003fffff,true),
HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_22", false,0,0x003fffff,true),
HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_13", false,0,0x00001fff,true),
HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_LO10", false,0,0x000003ff,true),
HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_GOT10", false,0,0x000003ff,true),
HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_GOT13", false,0,0x00001fff,true),
HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_GOT22", false,0,0x003fffff,true),
HOWTO(R_SPARC_PC10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_PC10", false,0,0x000003ff,true),
HOWTO(R_SPARC_PC22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_PC22", false,0,0x003fffff,true),
HOWTO(R_SPARC_WPLT30, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_WPLT30", false,0,0x00000000,true),
HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_COPY", false,0,0x00000000,true),
HOWTO(R_SPARC_GLOB_DAT,0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_GLOB_DAT",false,0,0x00000000,true),
HOWTO(R_SPARC_JMP_SLOT,0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_JMP_SLOT",false,0,0x00000000,true),
HOWTO(R_SPARC_RELATIVE,0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_RELATIVE",false,0,0x00000000,true),
HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_UA32", false,0,0x00000000,true),
};
struct elf_reloc_map {
unsigned char bfd_reloc_val;
unsigned char elf_reloc_val;
};
static CONST struct elf_reloc_map sparc_reloc_map[] =
{
{ BFD_RELOC_NONE, R_SPARC_NONE, },
{ BFD_RELOC_16, R_SPARC_16, },
{ BFD_RELOC_8, R_SPARC_8 },
{ BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
{ BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */
{ BFD_RELOC_32, R_SPARC_32 },
{ BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
{ BFD_RELOC_HI22, R_SPARC_HI22 },
{ BFD_RELOC_LO10, R_SPARC_LO10, },
{ BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
{ BFD_RELOC_SPARC22, R_SPARC_22 },
{ BFD_RELOC_SPARC13, R_SPARC_13 },
{ BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
{ BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
{ BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
{ BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
{ BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
{ BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
{ BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
{ BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
{ BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
{ BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
{ BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
/* { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
};
static CONST struct reloc_howto_struct *
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
bfd *abfd;
bfd_reloc_code_real_type code;
{
int i;
for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
{
if (sparc_reloc_map[i].bfd_reloc_val == code)
return &elf_sparc_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
}
return 0;
}
static void
elf_info_to_howto (abfd, cache_ptr, dst)
bfd *abfd;
arelent *cache_ptr;
Elf_Internal_Rela *dst;
{
BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max);
cache_ptr->howto = &elf_sparc_howto_table[ELF32_R_TYPE(dst->r_info)];
}
/* Relocate a SPARC ELF section. */
static boolean
elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
contents, relocs, local_syms, local_sections)
bfd *output_bfd;
struct bfd_link_info *info;
bfd *input_bfd;
asection *input_section;
bfd_byte *contents;
Elf_Internal_Rela *relocs;
Elf_Internal_Sym *local_syms;
asection **local_sections;
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
int r_type;
const reloc_howto_type *howto;
long r_symndx;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
asection *sec;
bfd_vma relocation;
bfd_reloc_status_type r;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type < 0 || r_type >= (int) R_SPARC_max)
{
bfd_set_error (bfd_error_bad_value);
return false;
}
howto = elf_sparc_howto_table + r_type;
r_symndx = ELF32_R_SYM (rel->r_info);
if (info->relocateable)
{
/* This is a relocateable link. We don't have to change
anything, unless the reloc is against a section symbol,
in which case we have to adjust according to where the
section symbol winds up in the output section. */
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
sec = local_sections[r_symndx];
rel->r_addend += sec->output_offset + sym->st_value;
}
}
continue;
}
/* This is a final link. */
h = NULL;
sym = NULL;
sec = NULL;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
relocation = (sec->output_section->vma
+ sec->output_offset
+ sym->st_value);
}
else
{
long indx;
indx = r_symndx - symtab_hdr->sh_info;
h = sym_hashes[indx];
if (h->root.type == bfd_link_hash_defined)
{
sec = h->root.u.def.section;
relocation = (h->root.u.def.value
+ sec->output_section->vma
+ sec->output_offset);
}
else if (h->root.type == bfd_link_hash_weak)
relocation = 0;
else
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd,
input_section, rel->r_offset)))
return false;
relocation = 0;
}
}
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
if (r != bfd_reloc_ok)
{
switch (r)
{
default:
case bfd_reloc_outofrange:
abort ();
case bfd_reloc_overflow:
{
const char *name;
if (h != NULL)
name = h->root.root.string;
else
{
name = elf_string_from_elf_section (input_bfd,
symtab_hdr->sh_link,
sym->st_name);
if (name == NULL)
return false;
if (*name == '\0')
name = bfd_section_name (input_bfd, sec);
}
if (! ((*info->callbacks->reloc_overflow)
(info, name, howto->name, (bfd_vma) 0,
input_bfd, input_section, rel->r_offset)))
return false;
}
break;
}
}
}
return true;
}
#define TARGET_BIG_SYM bfd_elf32_sparc_vec
#define TARGET_BIG_NAME "elf32-sparc"
#define ELF_ARCH bfd_arch_sparc
#define ELF_MACHINE_CODE EM_SPARC
#define ELF_MAXPAGESIZE 0x10000
#define elf_backend_relocate_section elf32_sparc_relocate_section
#include "elf32-target.h"
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.