#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/crx.h"
static reloc_howto_type *elf_crx_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
static void elf_crx_info_to_howto
(bfd *, arelent *, Elf_Internal_Rela *);
static bfd_boolean elf32_crx_relax_delete_bytes
(struct bfd_link_info *, bfd *, asection *, bfd_vma, int);
static bfd_reloc_status_type crx_elf_final_link_relocate
(reloc_howto_type *, bfd *, bfd *, asection *,
bfd_byte *, bfd_vma, bfd_vma, bfd_vma,
struct bfd_link_info *, asection *, int);
static bfd_boolean elf32_crx_relocate_section
(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
static asection * elf32_crx_gc_mark_hook
(asection *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *, Elf_Internal_Sym *);
static bfd_boolean elf32_crx_gc_sweep_hook
(bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *);
static bfd_boolean elf32_crx_relax_section
(bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
static bfd_byte * elf32_crx_get_relocated_section_contents
(bfd *, struct bfd_link_info *, struct bfd_link_order *,
bfd_byte *, bfd_boolean, asymbol **);
struct crx_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_enum;
unsigned short crx_reloc_type;
};
static const struct crx_reloc_map crx_reloc_map[R_CRX_MAX] =
{
{BFD_RELOC_NONE, R_CRX_NONE},
{BFD_RELOC_CRX_REL4, R_CRX_REL4},
{BFD_RELOC_CRX_REL8, R_CRX_REL8},
{BFD_RELOC_CRX_REL8_CMP, R_CRX_REL8_CMP},
{BFD_RELOC_CRX_REL16, R_CRX_REL16},
{BFD_RELOC_CRX_REL24, R_CRX_REL24},
{BFD_RELOC_CRX_REL32, R_CRX_REL32},
{BFD_RELOC_CRX_REGREL12, R_CRX_REGREL12},
{BFD_RELOC_CRX_REGREL22, R_CRX_REGREL22},
{BFD_RELOC_CRX_REGREL28, R_CRX_REGREL28},
{BFD_RELOC_CRX_REGREL32, R_CRX_REGREL32},
{BFD_RELOC_CRX_ABS16, R_CRX_ABS16},
{BFD_RELOC_CRX_ABS32, R_CRX_ABS32},
{BFD_RELOC_CRX_NUM8, R_CRX_NUM8},
{BFD_RELOC_CRX_NUM16, R_CRX_NUM16},
{BFD_RELOC_CRX_NUM32, R_CRX_NUM32},
{BFD_RELOC_CRX_IMM16, R_CRX_IMM16},
{BFD_RELOC_CRX_IMM32, R_CRX_IMM32},
{BFD_RELOC_CRX_SWITCH8, R_CRX_SWITCH8},
{BFD_RELOC_CRX_SWITCH16, R_CRX_SWITCH16},
{BFD_RELOC_CRX_SWITCH32, R_CRX_SWITCH32}
};
static reloc_howto_type crx_elf_howto_table[] =
{
HOWTO (R_CRX_NONE,
0,
2,
32,
FALSE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_CRX_NONE",
FALSE,
0,
0,
FALSE),
HOWTO (R_CRX_REL4,
1,
0,
4,
TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REL4",
FALSE,
0xf,
0xf,
FALSE),
HOWTO (R_CRX_REL8,
1,
0,
8,
TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REL8",
FALSE,
0xff,
0xff,
FALSE),
HOWTO (R_CRX_REL8_CMP,
1,
0,
8,
TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REL8_CMP",
FALSE,
0xff,
0xff,
FALSE),
HOWTO (R_CRX_REL16,
1,
1,
16,
TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REL16",
FALSE,
0xffff,
0xffff,
FALSE),
HOWTO (R_CRX_REL24,
1,
2,
24,
TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REL24",
FALSE,
0xffffff,
0xffffff,
FALSE),
HOWTO (R_CRX_REL32,
1,
2,
32,
TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REL32",
FALSE,
0xffffffff,
0xffffffff,
FALSE),
HOWTO (R_CRX_REGREL12,
0,
1,
12,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REGREL12",
FALSE,
0xfff,
0xfff,
FALSE),
HOWTO (R_CRX_REGREL22,
0,
2,
22,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REGREL22",
FALSE,
0x3fffff,
0x3fffff,
FALSE),
HOWTO (R_CRX_REGREL28,
0,
2,
28,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REGREL28",
FALSE,
0xfffffff,
0xfffffff,
FALSE),
HOWTO (R_CRX_REGREL32,
0,
2,
32,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_REGREL32",
FALSE,
0xffffffff,
0xffffffff,
FALSE),
HOWTO (R_CRX_ABS16,
0,
1,
16,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_ABS16",
FALSE,
0xffff,
0xffff,
FALSE),
HOWTO (R_CRX_ABS32,
0,
2,
32,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_ABS32",
FALSE,
0xffffffff,
0xffffffff,
FALSE),
HOWTO (R_CRX_NUM8,
0,
0,
8,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_NUM8",
FALSE,
0xff,
0xff,
FALSE),
HOWTO (R_CRX_NUM16,
0,
1,
16,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_NUM16",
FALSE,
0xffff,
0xffff,
FALSE),
HOWTO (R_CRX_NUM32,
0,
2,
32,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_NUM32",
FALSE,
0xffffffff,
0xffffffff,
FALSE),
HOWTO (R_CRX_IMM16,
0,
1,
16,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_IMM16",
FALSE,
0xffff,
0xffff,
FALSE),
HOWTO (R_CRX_IMM32,
0,
2,
32,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_CRX_IMM32",
FALSE,
0xffffffff,
0xffffffff,
FALSE),
HOWTO (R_CRX_SWITCH8,
0,
0,
8,
FALSE,
0,
complain_overflow_unsigned,
bfd_elf_generic_reloc,
"R_CRX_SWITCH8",
FALSE,
0xff,
0xff,
TRUE),
HOWTO (R_CRX_SWITCH16,
0,
1,
16,
FALSE,
0,
complain_overflow_unsigned,
bfd_elf_generic_reloc,
"R_CRX_SWITCH16",
FALSE,
0xffff,
0xffff,
TRUE),
HOWTO (R_CRX_SWITCH32,
0,
2,
32,
FALSE,
0,
complain_overflow_unsigned,
bfd_elf_generic_reloc,
"R_CRX_SWITCH32",
FALSE,
0xffffffff,
0xffffffff,
TRUE)
};
static reloc_howto_type *
elf_crx_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
unsigned int i;
for (i = 0; i < R_CRX_MAX; i++)
if (code == crx_reloc_map[i].bfd_reloc_enum)
return &crx_elf_howto_table[crx_reloc_map[i].crx_reloc_type];
printf ("This relocation Type is not supported -0x%x\n", code);
return 0;
}
static void
elf_crx_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
BFD_ASSERT (r_type < (unsigned int) R_CRX_MAX);
cache_ptr->howto = &crx_elf_howto_table[r_type];
}
static bfd_reloc_status_type
crx_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd,
bfd *output_bfd ATTRIBUTE_UNUSED,
asection *input_section, bfd_byte *contents,
bfd_vma offset, bfd_vma Rvalue, bfd_vma addend,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
asection *sec ATTRIBUTE_UNUSED,
int is_local ATTRIBUTE_UNUSED)
{
unsigned short r_type = howto->type;
bfd_byte *hit_data = contents + offset;
bfd_vma reloc_bits, check;
switch (r_type)
{
case R_CRX_IMM16:
case R_CRX_IMM32:
case R_CRX_ABS16:
case R_CRX_ABS32:
case R_CRX_REL8_CMP:
case R_CRX_REL16:
case R_CRX_REL24:
case R_CRX_REL32:
case R_CRX_REGREL12:
case R_CRX_REGREL22:
case R_CRX_REGREL28:
case R_CRX_REGREL32:
hit_data += 2;
break;
case R_CRX_REL4:
Rvalue -= 1;
break;
case R_CRX_NONE:
return bfd_reloc_ok;
break;
case R_CRX_SWITCH8:
case R_CRX_SWITCH16:
case R_CRX_SWITCH32:
Rvalue = 0;
default:
break;
}
if (howto->pc_relative)
{
Rvalue -= (input_section->output_section->vma
+ input_section->output_offset);
Rvalue -= offset;
}
Rvalue += addend;
check = Rvalue >> howto->rightshift;
reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
if (((bfd_vma) check & ~reloc_bits) != 0
&& (((bfd_vma) check & ~reloc_bits)
!= (-(bfd_vma) 1 & ~reloc_bits)))
{
if (howto->rightshift && (bfd_signed_vma) Rvalue < 0)
{
check |= ((bfd_vma) - 1
& ~((bfd_vma) - 1
>> howto->rightshift));
if (((bfd_vma) check & ~reloc_bits)
!= (-(bfd_vma) 1 & ~reloc_bits))
return bfd_reloc_overflow;
}
else
return bfd_reloc_overflow;
}
Rvalue >>= (bfd_vma) howto->rightshift;
Rvalue &= howto->dst_mask;
switch (howto->size)
{
case 0:
if (r_type == R_CRX_REL4)
{
Rvalue <<= 4;
Rvalue |= (bfd_get_8 (input_bfd, hit_data) & 0x0f);
}
bfd_put_8 (input_bfd, (unsigned char) Rvalue, hit_data);
break;
case 1:
if (r_type == R_CRX_REGREL12)
Rvalue |= (bfd_get_16 (input_bfd, hit_data) & 0xf000);
bfd_put_16 (input_bfd, Rvalue, hit_data);
break;
case 2:
if (r_type == R_CRX_REL24
|| r_type == R_CRX_REGREL22
|| r_type == R_CRX_REGREL28)
Rvalue |= (((bfd_get_16 (input_bfd, hit_data) << 16) |
bfd_get_16 (input_bfd, hit_data + 2)) & ~howto->dst_mask);
if (r_type == R_CRX_NUM32 || r_type == R_CRX_SWITCH32)
bfd_put_32 (input_bfd, Rvalue, hit_data);
else
{
bfd_put_16 (input_bfd, (Rvalue >> 16) & 0xffff, hit_data);
bfd_put_16 (input_bfd, Rvalue & 0xffff, hit_data + 2);
}
break;
default:
return bfd_reloc_notsupported;
}
return bfd_reloc_ok;
}
static bfd_boolean
elf32_crx_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd,
asection *sec, bfd_vma addr, int count)
{
Elf_Internal_Shdr *symtab_hdr;
unsigned int sec_shndx;
bfd_byte *contents;
Elf_Internal_Rela *irel, *irelend;
Elf_Internal_Rela *irelalign;
bfd_vma toaddr;
Elf_Internal_Sym *isym;
Elf_Internal_Sym *isymend;
struct elf_link_hash_entry **sym_hashes;
struct elf_link_hash_entry **end_hashes;
struct elf_link_hash_entry **start_hashes;
unsigned int symcount;
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
contents = elf_section_data (sec)->this_hdr.contents;
irelalign = NULL;
toaddr = sec->size;
irel = elf_section_data (sec)->relocs;
irelend = irel + sec->reloc_count;
memmove (contents + addr, contents + addr + count,
(size_t) (toaddr - addr - count));
sec->size -= count;
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
{
if ((irel->r_offset > addr
&& irel->r_offset < toaddr))
irel->r_offset -= count;
}
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
isym = (Elf_Internal_Sym *) symtab_hdr->contents;
for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
{
if (isym->st_shndx == sec_shndx
&& isym->st_value > addr
&& isym->st_value < toaddr)
{
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
{
unsigned long r_symndx;
Elf_Internal_Sym *rsym;
bfd_vma addsym, subsym;
if (ELF32_R_TYPE (irel->r_info) != (int) R_CRX_SWITCH8
&& ELF32_R_TYPE (irel->r_info) != (int) R_CRX_SWITCH16
&& ELF32_R_TYPE (irel->r_info) != (int) R_CRX_SWITCH32)
continue;
r_symndx = ELF32_R_SYM (irel->r_info);
rsym = (Elf_Internal_Sym *) symtab_hdr->contents + r_symndx;
if (rsym != isym)
continue;
addsym = isym->st_value;
subsym = addsym - irel->r_addend;
if (subsym <= addr)
irel->r_addend -= count;
else
continue;
}
isym->st_value -= count;
}
}
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
- symtab_hdr->sh_info);
sym_hashes = start_hashes = elf_sym_hashes (abfd);
end_hashes = sym_hashes + symcount;
for (; sym_hashes < end_hashes; sym_hashes++)
{
struct elf_link_hash_entry *sym_hash = *sym_hashes;
if (link_info->wrap_hash != NULL)
{
struct elf_link_hash_entry **cur_sym_hashes;
for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes;
cur_sym_hashes++)
{
if (*cur_sym_hashes == sym_hash)
break;
}
if (cur_sym_hashes < sym_hashes)
continue;
}
if ((sym_hash->root.type == bfd_link_hash_defined
|| sym_hash->root.type == bfd_link_hash_defweak)
&& sym_hash->root.u.def.section == sec
&& sym_hash->root.u.def.value > addr
&& sym_hash->root.u.def.value < toaddr)
sym_hash->root.u.def.value -= count;
}
return TRUE;
}
static bfd_byte *
elf32_crx_get_relocated_section_contents (bfd *output_bfd,
struct bfd_link_info *link_info,
struct bfd_link_order *link_order,
bfd_byte *data,
bfd_boolean relocatable,
asymbol **symbols)
{
Elf_Internal_Shdr *symtab_hdr;
asection *input_section = link_order->u.indirect.section;
bfd *input_bfd = input_section->owner;
asection **sections = NULL;
Elf_Internal_Rela *internal_relocs = NULL;
Elf_Internal_Sym *isymbuf = NULL;
if (relocatable
|| elf_section_data (input_section)->this_hdr.contents == NULL)
return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
link_order, data,
relocatable,
symbols);
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
memcpy (data, elf_section_data (input_section)->this_hdr.contents,
(size_t) input_section->size);
if ((input_section->flags & SEC_RELOC) != 0
&& input_section->reloc_count > 0)
{
Elf_Internal_Sym *isym;
Elf_Internal_Sym *isymend;
asection **secpp;
bfd_size_type amt;
internal_relocs = (_bfd_elf_link_read_relocs
(input_bfd, input_section, (PTR) NULL,
(Elf_Internal_Rela *) NULL, FALSE));
if (internal_relocs == NULL)
goto error_return;
if (symtab_hdr->sh_info != 0)
{
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
if (isymbuf == NULL)
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
symtab_hdr->sh_info, 0,
NULL, NULL, NULL);
if (isymbuf == NULL)
goto error_return;
}
amt = symtab_hdr->sh_info;
amt *= sizeof (asection *);
sections = bfd_malloc (amt);
if (sections == NULL && amt != 0)
goto error_return;
isymend = isymbuf + symtab_hdr->sh_info;
for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
{
asection *isec;
if (isym->st_shndx == SHN_UNDEF)
isec = bfd_und_section_ptr;
else if (isym->st_shndx == SHN_ABS)
isec = bfd_abs_section_ptr;
else if (isym->st_shndx == SHN_COMMON)
isec = bfd_com_section_ptr;
else
isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
*secpp = isec;
}
if (! elf32_crx_relocate_section (output_bfd, link_info, input_bfd,
input_section, data, internal_relocs,
isymbuf, sections))
goto error_return;
if (sections != NULL)
free (sections);
if (isymbuf != NULL
&& symtab_hdr->contents != (unsigned char *) isymbuf)
free (isymbuf);
if (elf_section_data (input_section)->relocs != internal_relocs)
free (internal_relocs);
}
return data;
error_return:
if (sections != NULL)
free (sections);
if (isymbuf != NULL
&& symtab_hdr->contents != (unsigned char *) isymbuf)
free (isymbuf);
if (internal_relocs != NULL
&& elf_section_data (input_section)->relocs != internal_relocs)
free (internal_relocs);
return NULL;
}
static bfd_boolean
elf32_crx_relocate_section (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, *relend;
if (info->relocatable)
return TRUE;
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;
unsigned long r_symndx;
Elf_Internal_Sym *sym;
asection *sec;
struct elf_link_hash_entry *h;
bfd_vma relocation;
bfd_reloc_status_type r;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
howto = crx_elf_howto_table + (r_type);
h = NULL;
sym = NULL;
sec = NULL;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
bfd_boolean unresolved_reloc, warned;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
unresolved_reloc, warned);
}
r = crx_elf_final_link_relocate (howto, input_bfd, output_bfd,
input_section,
contents, rel->r_offset,
relocation, rel->r_addend,
info, sec, h == NULL);
if (r != bfd_reloc_ok)
{
const char *name;
const char *msg = (const char *) 0;
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 || *name == '\0')
name = bfd_section_name (input_bfd, sec);
}
switch (r)
{
case bfd_reloc_overflow:
if (!((*info->callbacks->reloc_overflow)
(info, (h ? &h->root : NULL), name, howto->name,
(bfd_vma) 0, input_bfd, input_section,
rel->r_offset)))
return FALSE;
break;
case bfd_reloc_undefined:
if (!((*info->callbacks->undefined_symbol)
(info, name, input_bfd, input_section,
rel->r_offset, TRUE)))
return FALSE;
break;
case bfd_reloc_outofrange:
msg = _("internal error: out of range error");
goto common_error;
case bfd_reloc_notsupported:
msg = _("internal error: unsupported relocation error");
goto common_error;
case bfd_reloc_dangerous:
msg = _("internal error: dangerous error");
goto common_error;
default:
msg = _("internal error: unknown error");
common_error:
if (!((*info->callbacks->warning)
(info, msg, name, input_bfd, input_section,
rel->r_offset)))
return FALSE;
break;
}
}
}
return TRUE;
}
static bfd_boolean
elf32_crx_relax_section (bfd *abfd, asection *sec,
struct bfd_link_info *link_info, bfd_boolean *again)
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Rela *internal_relocs;
Elf_Internal_Rela *irel, *irelend;
bfd_byte *contents = NULL;
Elf_Internal_Sym *isymbuf = NULL;
*again = FALSE;
if (link_info->relocatable
|| (sec->flags & SEC_RELOC) == 0
|| sec->reloc_count == 0
|| (sec->flags & SEC_CODE) == 0)
return TRUE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
internal_relocs = (_bfd_elf_link_read_relocs
(abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
link_info->keep_memory));
if (internal_relocs == NULL)
goto error_return;
irelend = internal_relocs + sec->reloc_count;
for (irel = internal_relocs; irel < irelend; irel++)
{
bfd_vma symval;
if (ELF32_R_TYPE (irel->r_info) != (int) R_CRX_REL32
&& ELF32_R_TYPE (irel->r_info) != (int) R_CRX_REL16
&& ELF32_R_TYPE (irel->r_info) != (int) R_CRX_REL24
&& ELF32_R_TYPE (irel->r_info) != (int) R_CRX_IMM32)
continue;
if (contents == NULL)
{
if (elf_section_data (sec)->this_hdr.contents != NULL)
contents = elf_section_data (sec)->this_hdr.contents;
else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
goto error_return;
}
if (isymbuf == NULL && symtab_hdr->sh_info != 0)
{
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
if (isymbuf == NULL)
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
symtab_hdr->sh_info, 0,
NULL, NULL, NULL);
if (isymbuf == NULL)
goto error_return;
}
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
{
Elf_Internal_Sym *isym;
asection *sym_sec;
isym = isymbuf + ELF32_R_SYM (irel->r_info);
if (isym->st_shndx == SHN_UNDEF)
sym_sec = bfd_und_section_ptr;
else if (isym->st_shndx == SHN_ABS)
sym_sec = bfd_abs_section_ptr;
else if (isym->st_shndx == SHN_COMMON)
sym_sec = bfd_com_section_ptr;
else
sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
symval = (isym->st_value
+ sym_sec->output_section->vma
+ sym_sec->output_offset);
}
else
{
unsigned long indx;
struct elf_link_hash_entry *h;
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
h = elf_sym_hashes (abfd)[indx];
BFD_ASSERT (h != NULL);
if (h->root.type != bfd_link_hash_defined
&& h->root.type != bfd_link_hash_defweak)
continue;
symval = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
}
if (ELF32_R_TYPE (irel->r_info) == (int) R_CRX_REL32)
{
bfd_vma value = symval;
value -= (sec->output_section->vma + sec->output_offset);
value -= irel->r_offset;
value += irel->r_addend;
if ((long) value < 0x10000 && (long) value > -0x10002)
{
unsigned short code;
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
if ((code & 0xfff0) == 0x3170)
bfd_put_8 (abfd, 0x30, contents + irel->r_offset + 1);
else if ((code & 0xf0ff) == 0x707f)
bfd_put_8 (abfd, 0x7e, contents + irel->r_offset);
else
continue;
elf_section_data (sec)->relocs = internal_relocs;
elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_CRX_REL16);
if (!elf32_crx_relax_delete_bytes (link_info, abfd, sec,
irel->r_offset + 2, 2))
goto error_return;
*again = TRUE;
}
}
if (ELF32_R_TYPE (irel->r_info) == (int) R_CRX_REL16)
{
bfd_vma value = symval;
value -= (sec->output_section->vma + sec->output_offset);
value -= irel->r_offset;
value += irel->r_addend;
if ((long) value < 0xfe && (long) value > -0x100)
{
unsigned short code;
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
if ((code & 0xf0ff) != 0x707e)
continue;
elf_section_data (sec)->relocs = internal_relocs;
elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_CRX_REL8);
if (!elf32_crx_relax_delete_bytes (link_info, abfd, sec,
irel->r_offset + 2, 2))
goto error_return;
*again = TRUE;
}
}
if (ELF32_R_TYPE (irel->r_info) == (int) R_CRX_REL24)
{
bfd_vma value = symval;
value -= (sec->output_section->vma + sec->output_offset);
value -= irel->r_offset;
value += irel->r_addend;
if ((long) value < 0x100 && (long) value > -0x100)
{
unsigned short code;
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
if ((code & 0xfff0) != 0x3180 && (code & 0xfff0) != 0x3190
&& (code & 0xfff0) != 0x31a0 && (code & 0xfff0) != 0x31c0
&& (code & 0xfff0) != 0x31d0 && (code & 0xfff0) != 0x31e0
&& (code & 0xfff0) != 0x3010 && (code & 0xfff0) != 0x3110)
continue;
elf_section_data (sec)->relocs = internal_relocs;
elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
bfd_put_8 (abfd, 0x30, contents + irel->r_offset + 1);
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_CRX_REL8_CMP);
if (!elf32_crx_relax_delete_bytes (link_info, abfd, sec,
irel->r_offset + 4, 2))
goto error_return;
*again = TRUE;
}
}
if (ELF32_R_TYPE (irel->r_info) == (int) R_CRX_IMM32)
{
bfd_vma value = symval;
if ((long) value < 0x7fff && (long) value > -0x8000)
{
unsigned short code;
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
if ((code & 0xf0f0) != 0x20f0)
continue;
elf_section_data (sec)->relocs = internal_relocs;
elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
bfd_put_8 (abfd, (code & 0xff) - 0x10, contents + irel->r_offset);
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_CRX_IMM16);
if (!elf32_crx_relax_delete_bytes (link_info, abfd, sec,
irel->r_offset + 2, 2))
goto error_return;
*again = TRUE;
}
}
}
if (isymbuf != NULL
&& symtab_hdr->contents != (unsigned char *) isymbuf)
{
if (! link_info->keep_memory)
free (isymbuf);
else
{
symtab_hdr->contents = (unsigned char *) isymbuf;
}
}
if (contents != NULL
&& elf_section_data (sec)->this_hdr.contents != contents)
{
if (! link_info->keep_memory)
free (contents);
else
{
elf_section_data (sec)->this_hdr.contents = contents;
}
}
if (internal_relocs != NULL
&& elf_section_data (sec)->relocs != internal_relocs)
free (internal_relocs);
return TRUE;
error_return:
if (isymbuf != NULL
&& symtab_hdr->contents != (unsigned char *) isymbuf)
free (isymbuf);
if (contents != NULL
&& elf_section_data (sec)->this_hdr.contents != contents)
free (contents);
if (internal_relocs != NULL
&& elf_section_data (sec)->relocs != internal_relocs)
free (internal_relocs);
return FALSE;
}
static asection *
elf32_crx_gc_mark_hook (asection *sec,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
Elf_Internal_Rela *rel ATTRIBUTE_UNUSED,
struct elf_link_hash_entry *h,
Elf_Internal_Sym *sym)
{
if (h == NULL)
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
switch (h->root.type)
{
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
return h->root.u.def.section;
case bfd_link_hash_common:
return h->root.u.c.p->section;
default:
return NULL;
}
}
static bfd_boolean
elf32_crx_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
asection *sec ATTRIBUTE_UNUSED,
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
{
return TRUE;
}
#define TARGET_LITTLE_SYM bfd_elf32_crx_vec
#define TARGET_LITTLE_NAME "elf32-crx"
#define ELF_ARCH bfd_arch_crx
#define ELF_MACHINE_CODE EM_CRX
#define ELF_MAXPAGESIZE 0x1
#define elf_symbol_leading_char '_'
#define bfd_elf32_bfd_reloc_type_lookup elf_crx_reloc_type_lookup
#define elf_info_to_howto elf_crx_info_to_howto
#define elf_info_to_howto_rel 0
#define elf_backend_relocate_section elf32_crx_relocate_section
#define bfd_elf32_bfd_relax_section elf32_crx_relax_section
#define bfd_elf32_bfd_get_relocated_section_contents \
elf32_crx_get_relocated_section_contents
#define elf_backend_gc_mark_hook elf32_crx_gc_mark_hook
#define elf_backend_gc_sweep_hook elf32_crx_gc_sweep_hook
#define elf_backend_can_gc_sections 1
#define elf_backend_rela_normal 1
#include "elf32-target.h"