binutils-gdb/bfd/elf64-sparc.c

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/* SPARC-specific support for 64-bit ELF
Copyright 1993, 1995 Free Software Foundation, Inc.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* We need a published ABI spec for this. Until one comes out, don't
assume this'll remain unchanged forever. */
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#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
static bfd_reloc_status_type sparc64_elf_wdisp16_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static boolean sparc64_elf_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
static boolean sparc64_elf_object_p PARAMS ((bfd *));
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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,
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R_SPARC_WPLT30,
R_SPARC_COPY,
R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT,
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R_SPARC_RELATIVE,
R_SPARC_UA32,
/* v9 relocs */
R_SPARC_10, R_SPARC_11, R_SPARC_64,
R_SPARC_OLO10, R_SPARC_HH22, R_SPARC_HM10, R_SPARC_LM22,
R_SPARC_PC_HH22, R_SPARC_PC_HM10, R_SPARC_PC_LM22,
R_SPARC_WDISP16, R_SPARC_WDISP19,
R_SPARC_GLOB_JMP, R_SPARC_LO7,
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",
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"R_SPARC_WPLT30",
"R_SPARC_COPY",
"R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT",
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"R_SPARC_RELATIVE",
"R_SPARC_UA32",
"R_SPARC_10", "R_SPARC_11", "R_SPARC_64",
"R_SPARC_OLO10", "R_SPARC_HH22", "R_SPARC_HM10", "R_SPARC_LM22",
"R_SPARC_PC_HH22", "R_SPARC_PC_HM10", "R_SPARC_PC_LM22",
"R_SPARC_WDISP16", "R_SPARC_WDISP19",
"R_SPARC_GLOB_JMP", "R_SPARC_LO7",
};
#endif
extern void abort ();
#define DIE ((bfd_reloc_status_type(*)())abort)
static reloc_howto_type elf_sparc_howto_table[] =
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{
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),
HOWTO (R_SPARC_10, 0, 2, 10, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_SPARC_10", false, 0, 0x000003ff, true),
HOWTO (R_SPARC_11, 0, 2, 11, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_SPARC_11", false, 0, 0x000007ff, true),
HOWTO (R_SPARC_64, 0, 4, 00, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_SPARC_64", false, 0, (((bfd_vma) 0xffffffff) << 32) + 0xffffffff, true),
HOWTO (R_SPARC_OLO10, 0, 2, 10, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_OLO10", false, 0, 0x000003ff, true),
HOWTO (R_SPARC_HH22, 42, 2, 22, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false, 0, 0x003fffff, true),
HOWTO (R_SPARC_HM10, 32, 2, 10, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false, 0, 0x000003ff, true),
HOWTO (R_SPARC_LM22, 10, 2, 22, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false, 0, 0x003fffff, true),
HOWTO (R_SPARC_PC_HH22, 42, 2, 22, true, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false, 0, 0x003fffff, true),
HOWTO (R_SPARC_PC_HM10, 32, 2, 10, true, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false, 0, 0x000003ff, true),
HOWTO (R_SPARC_PC_LM22, 10, 2, 22, true, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false, 0, 0x003fffff, true),
HOWTO (R_SPARC_WDISP16, 2, 2, 16, true, 0, complain_overflow_signed, sparc64_elf_wdisp16_reloc, "R_SPARC_WDISP16", false, 0, 0, true),
HOWTO (R_SPARC_WDISP19, 2, 2, 22, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false, 0, 0x0007ffff, true),
HOWTO (R_SPARC_GLOB_JMP, 0, 0, 00, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT", false, 0, 0x00000000, true),
HOWTO (R_SPARC_LO7, 0, 2, 7, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO7", false, 0, 0x0000007f, true),
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};
/* Handle the WDISP16 reloc. */
static bfd_reloc_status_type
sparc64_elf_wdisp16_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;
bfd_vma x;
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;
}
if (output_bfd != NULL)
return bfd_reloc_continue;
if (reloc_entry->address > input_section->_cooked_size)
return bfd_reloc_outofrange;
relocation = (symbol->value
+ symbol->section->output_section->vma
+ symbol->section->output_offset);
relocation += reloc_entry->addend;
relocation -= (input_section->output_section->vma
+ input_section->output_offset);
relocation -= reloc_entry->address;
x = bfd_get_32 (abfd, (char *) data + reloc_entry->address);
x |= ((((relocation >> 2) & 0xc000) << 6)
| ((relocation >> 2) & 0x3fff));
bfd_put_32 (abfd, x, (char *) data + reloc_entry->address);
if ((bfd_signed_vma) relocation < - 0x40000
|| (bfd_signed_vma) relocation > 0x3ffff)
return bfd_reloc_overflow;
else
return bfd_reloc_ok;
}
struct elf_reloc_map
{
unsigned char bfd_reloc_val;
unsigned char elf_reloc_val;
};
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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},
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/* { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
{BFD_RELOC_SPARC_10, R_SPARC_10},
{BFD_RELOC_SPARC_11, R_SPARC_11},
{BFD_RELOC_SPARC_64, R_SPARC_64},
{BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10},
{BFD_RELOC_SPARC_HH22, R_SPARC_HH22},
{BFD_RELOC_SPARC_HM10, R_SPARC_HM10},
{BFD_RELOC_SPARC_LM22, R_SPARC_LM22},
{BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22},
{BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10},
{BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22},
{BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16},
{BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19},
{BFD_RELOC_SPARC_GLOB_JMP, R_SPARC_GLOB_JMP},
{BFD_RELOC_SPARC_LO7, R_SPARC_LO7},
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};
static reloc_howto_type *
bfd_elf64_bfd_reloc_type_lookup (abfd, code)
bfd *abfd;
bfd_reloc_code_real_type code;
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{
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;
Elf64_Internal_Rela *dst;
{
BFD_ASSERT (ELF64_R_TYPE (dst->r_info) < (unsigned int) R_SPARC_max);
cache_ptr->howto = &elf_sparc_howto_table[ELF64_R_TYPE (dst->r_info)];
}
/* Relocate a SPARC64 ELF section. */
static boolean
sparc64_elf_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;
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{
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;
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 = ELF64_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 = ELF64_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
{
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
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_undefweak)
relocation = 0;
else
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd,
input_section, rel->r_offset)))
return false;
relocation = 0;
}
}
if (r_type != R_SPARC_WDISP16)
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
else
{
bfd_vma x;
relocation += rel->r_addend;
relocation -= (input_section->output_section->vma
+ input_section->output_offset);
relocation -= rel->r_offset;
x = bfd_get_32 (input_bfd, contents + rel->r_offset);
x |= ((((relocation >> 2) & 0xc000) << 6)
| ((relocation >> 2) & 0x3fff));
bfd_put_32 (input_bfd, x, contents + rel->r_offset);
if ((bfd_signed_vma) relocation < - 0x40000
|| (bfd_signed_vma) relocation > 0x3ffff)
r = bfd_reloc_overflow;
else
r = bfd_reloc_ok;
}
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 = (bfd_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;
}
/* Set the right machine number for a SPARC64 ELF file. */
static boolean
sparc64_elf_object_p (abfd)
bfd *abfd;
{
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9);
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}
#define TARGET_BIG_SYM bfd_elf64_sparc_vec
#define TARGET_BIG_NAME "elf64-sparc"
#define ELF_ARCH bfd_arch_sparc
#define ELF_MACHINE_CODE EM_SPARC64
#define ELF_MAXPAGESIZE 0x100000
#define elf_backend_relocate_section sparc64_elf_relocate_section
#define elf_backend_object_p sparc64_elf_object_p
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#include "elf64-target.h"