#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/d30v.h"
#define MAX32 ((bfd_signed_vma) 0x7fffffff)
#define MIN32 (- MAX32 - 1)
static bfd_reloc_status_type
bfd_elf_d30v_reloc (bfd *abfd,
arelent *reloc_entry,
asymbol *symbol,
void * data,
asection *input_section,
bfd *output_bfd,
char **error_message)
{
bfd_signed_vma relocation;
bfd_vma in1, in2, num;
bfd_vma tmp_addr = 0;
bfd_reloc_status_type r;
asection *reloc_target_output_section;
bfd_size_type addr = reloc_entry->address;
bfd_reloc_status_type flag = bfd_reloc_ok;
bfd_vma output_base = 0;
reloc_howto_type *howto = reloc_entry->howto;
int make_absolute = 0;
if (output_bfd != NULL)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, error_message);
if (r != bfd_reloc_continue)
return r;
if (bfd_is_und_section (symbol->section)
&& (symbol->flags & BSF_WEAK) == 0
&& output_bfd == NULL)
flag = bfd_reloc_undefined;
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
return bfd_reloc_outofrange;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
reloc_target_output_section = symbol->section->output_section;
output_base = reloc_target_output_section->vma;
relocation += output_base + symbol->section->output_offset;
relocation += reloc_entry->addend;
if (howto->pc_relative)
{
tmp_addr = input_section->output_section->vma
+ input_section->output_offset
+ reloc_entry->address;
relocation -= tmp_addr;
}
in1 = bfd_get_32 (abfd, (bfd_byte *) data + addr);
in2 = bfd_get_32 (abfd, (bfd_byte *) data + addr + 4);
num = ((in2 & 0x3FFFF)
| ((in2 & 0xFF00000) >> 2)
| ((in1 & 0x3F) << 26));
in1 &= 0xFFFFFFC0;
in2 = 0x80000000;
relocation += num;
if (howto->pc_relative && howto->bitsize == 32)
{
if (relocation > MAX32 || relocation < MIN32)
{
relocation = (relocation + tmp_addr) & 0xffffffff;
make_absolute = 1;
}
}
in1 |= (relocation >> 26) & 0x3F;
in2 |= ((relocation & 0x03FC0000) << 2);
in2 |= relocation & 0x0003FFFF;
if (make_absolute)
in1 |= 0x00100000;
bfd_put_32 (abfd, in1, (bfd_byte *) data + addr);
bfd_put_32 (abfd, in2, (bfd_byte *) data + addr + 4);
return flag;
}
static bfd_reloc_status_type
bfd_elf_d30v_reloc_21 (bfd *abfd,
arelent *reloc_entry,
asymbol *symbol,
void * data,
asection *input_section,
bfd *output_bfd,
char **error_message)
{
bfd_vma relocation;
bfd_vma in1, num;
bfd_reloc_status_type r;
asection *reloc_target_output_section;
bfd_size_type addr = reloc_entry->address;
bfd_reloc_status_type flag = bfd_reloc_ok;
bfd_vma output_base = 0;
reloc_howto_type *howto = reloc_entry->howto;
int mask, max;
if (output_bfd != NULL)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, error_message);
if (r != bfd_reloc_continue)
return r;
if (bfd_is_und_section (symbol->section)
&& (symbol->flags & BSF_WEAK) == 0
&& output_bfd == NULL)
flag = bfd_reloc_undefined;
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
return bfd_reloc_outofrange;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
reloc_target_output_section = symbol->section->output_section;
output_base = reloc_target_output_section->vma;
relocation += output_base + symbol->section->output_offset;
relocation += reloc_entry->addend;
if (howto->pc_relative)
{
relocation -= (input_section->output_section->vma
+ input_section->output_offset);
if (howto->pcrel_offset)
relocation -= reloc_entry->address;
}
in1 = bfd_get_32 (abfd, (bfd_byte *) data + addr);
mask = (1 << howto->bitsize) - 1;
if (howto->bitsize == 6)
mask <<= 12;
max = (1 << (howto->bitsize + 2)) - 1;
num = in1 & mask;
if (howto->bitsize == 6)
num >>= 12;
num <<= 3;
in1 &= ~mask;
relocation += num;
if (howto->type == R_D30V_21_PCREL_R
|| howto->type == R_D30V_15_PCREL_R
|| howto->type == R_D30V_9_PCREL_R)
relocation += 4;
if ((int) relocation < 0)
{
if (~ (int) relocation > max)
flag = bfd_reloc_overflow;
}
else
{
if ((int) relocation > max)
flag = bfd_reloc_overflow;
}
relocation >>= 3;
if (howto->bitsize == 6)
in1 |= ((relocation & (mask >> 12)) << 12);
else
in1 |= relocation & mask;
bfd_put_32 (abfd, in1, (bfd_byte *) data + addr);
return flag;
}
static reloc_howto_type elf_d30v_howto_table[] =
{
HOWTO (R_D30V_NONE,
0,
2,
32,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_D30V_NONE",
FALSE,
0,
0,
FALSE),
HOWTO (R_D30V_6,
0,
2,
6,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_D30V_6",
FALSE,
0x3f,
0x3f,
FALSE),
HOWTO (R_D30V_9_PCREL,
3,
2,
6,
TRUE,
0,
complain_overflow_signed,
bfd_elf_d30v_reloc_21,
"R_D30V_9_PCREL",
FALSE,
0x3f,
0x3f,
TRUE),
HOWTO (R_D30V_9_PCREL_R,
3,
2,
6,
TRUE,
0,
complain_overflow_signed,
bfd_elf_d30v_reloc_21,
"R_D30V_9_PCREL_R",
FALSE,
0x3f,
0x3f,
TRUE),
HOWTO (R_D30V_15,
3,
2,
12,
FALSE,
0,
complain_overflow_signed,
bfd_elf_generic_reloc,
"R_D30V_15",
FALSE,
0xfff,
0xfff,
FALSE),
HOWTO (R_D30V_15_PCREL,
3,
2,
12,
TRUE,
0,
complain_overflow_signed,
bfd_elf_d30v_reloc_21,
"R_D30V_15_PCREL",
FALSE,
0xfff,
0xfff,
TRUE),
HOWTO (R_D30V_15_PCREL_R,
3,
2,
12,
TRUE,
0,
complain_overflow_signed,
bfd_elf_d30v_reloc_21,
"R_D30V_15_PCREL_R",
FALSE,
0xfff,
0xfff,
TRUE),
HOWTO (R_D30V_21,
3,
2,
18,
FALSE,
0,
complain_overflow_signed,
bfd_elf_generic_reloc,
"R_D30V_21",
FALSE,
0x3ffff,
0x3ffff,
FALSE),
HOWTO (R_D30V_21_PCREL,
3,
2,
18,
TRUE,
0,
complain_overflow_signed,
bfd_elf_d30v_reloc_21,
"R_D30V_21_PCREL",
FALSE,
0x3ffff,
0x3ffff,
TRUE),
HOWTO (R_D30V_21_PCREL_R,
3,
2,
18,
TRUE,
0,
complain_overflow_signed,
bfd_elf_d30v_reloc_21,
"R_D30V_21_PCREL_R",
FALSE,
0x3ffff,
0x3ffff,
TRUE),
HOWTO (R_D30V_32,
0,
4,
32,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_d30v_reloc,
"R_D30V_32",
FALSE,
0xffffffff,
0xffffffff,
FALSE),
HOWTO (R_D30V_32_PCREL,
0,
4,
32,
TRUE,
0,
complain_overflow_signed,
bfd_elf_d30v_reloc,
"R_D30V_32_PCREL",
FALSE,
0xffffffff,
0xffffffff,
TRUE),
HOWTO (R_D30V_32_NORMAL,
0,
2,
32,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_D30V_32_NORMAL",
FALSE,
0xffffffff,
0xffffffff,
FALSE),
};
struct d30v_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
unsigned char elf_reloc_val;
};
static const struct d30v_reloc_map d30v_reloc_map[] =
{
{ BFD_RELOC_NONE, R_D30V_NONE, },
{ BFD_RELOC_D30V_6, R_D30V_6 },
{ BFD_RELOC_D30V_9_PCREL, R_D30V_9_PCREL },
{ BFD_RELOC_D30V_9_PCREL_R, R_D30V_9_PCREL_R },
{ BFD_RELOC_D30V_15, R_D30V_15 },
{ BFD_RELOC_D30V_15_PCREL, R_D30V_15_PCREL },
{ BFD_RELOC_D30V_15_PCREL_R, R_D30V_15_PCREL_R },
{ BFD_RELOC_D30V_21, R_D30V_21 },
{ BFD_RELOC_D30V_21_PCREL, R_D30V_21_PCREL },
{ BFD_RELOC_D30V_21_PCREL_R, R_D30V_21_PCREL_R },
{ BFD_RELOC_D30V_32, R_D30V_32 },
{ BFD_RELOC_D30V_32_PCREL, R_D30V_32_PCREL },
{ BFD_RELOC_32, R_D30V_32_NORMAL },
};
static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
unsigned int i;
for (i = 0;
i < sizeof (d30v_reloc_map) / sizeof (struct d30v_reloc_map);
i++)
{
if (d30v_reloc_map[i].bfd_reloc_val == code)
return &elf_d30v_howto_table[d30v_reloc_map[i].elf_reloc_val];
}
return NULL;
}
static void
d30v_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
BFD_ASSERT (r_type < (unsigned int) R_D30V_max);
cache_ptr->howto = &elf_d30v_howto_table[r_type];
}
static void
d30v_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
BFD_ASSERT (r_type < (unsigned int) R_D30V_max);
cache_ptr->howto = &elf_d30v_howto_table[r_type];
}
#define ELF_ARCH bfd_arch_d30v
#define ELF_MACHINE_CODE EM_D30V
#define ELF_MACHINE_ALT1 EM_CYGNUS_D30V
#define ELF_MAXPAGESIZE 0x1000
#define TARGET_BIG_SYM bfd_elf32_d30v_vec
#define TARGET_BIG_NAME "elf32-d30v"
#define elf_info_to_howto d30v_info_to_howto_rela
#define elf_info_to_howto_rel d30v_info_to_howto_rel
#define elf_backend_object_p 0
#define elf_backend_final_write_processing 0
#include "elf32-target.h"