#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "coff/maxq.h"
#include "coff/internal.h"
#include "libcoff.h"
#include "libiberty.h"
#ifndef MAXQ20
#define MAXQ20 1
#endif
#define RTYPE2HOWTO(cache_ptr, dst) \
((cache_ptr)->howto = \
((dst)->r_type < 48 \
? howto_table + (((dst)->r_type==47) ? 6: ((dst)->r_type)) \
: NULL))
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
#define SWAP_IN_RELOC_OFFSET H_GET_16
#define SWAP_OUT_RELOC_OFFSET H_PUT_16
#define SHORT_JUMP BFD_RELOC_16_PCREL_S2
#define LONG_JUMP BFD_RELOC_14
#define ABSOLUTE_ADDR_FOR_DATA BFD_RELOC_24
#define IS_SJUMP_RANGE(x) ((x > -128) && (x < 129))
#define HIGH_WORD_MASK 0xff00
#define LOW_WORD_MASK 0x00ff
static long
get_symbol_value (asymbol *symbol)
{
long relocation = 0;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value +
symbol->section->output_section->vma + symbol->section->output_offset;
return relocation;
}
static bfd_reloc_status_type
coff_maxq20_reloc (bfd * abfd,
arelent * reloc_entry,
asymbol * symbol_in,
void * data,
asection * input_section ATTRIBUTE_UNUSED,
bfd * output_bfd ATTRIBUTE_UNUSED,
char ** error_message ATTRIBUTE_UNUSED)
{
reloc_howto_type *howto = NULL;
unsigned char *addr = NULL;
unsigned long x = 0;
long call_addr = 0;
short addend = 0;
long diff = 0;
if (symbol_in->section == &bfd_und_section
&& (symbol_in->flags & BSF_WEAK) == 0)
return bfd_reloc_continue;
if (data && reloc_entry)
{
howto = reloc_entry->howto;
addr = (unsigned char *) data + reloc_entry->address;
call_addr = call_addr - call_addr;
call_addr = get_symbol_value (symbol_in);
switch (reloc_entry->howto->type)
{
case SHORT_JUMP:
addend = reloc_entry->addend;
if (addend > call_addr || addend > 0)
call_addr = symbol_in->section->output_section->vma + addend;
else if (addend < call_addr && addend > 0)
call_addr = call_addr + addend;
else if (addend < 0)
call_addr = call_addr + addend;
diff = ((call_addr << 1) - (reloc_entry->address << 1));
if (!IS_SJUMP_RANGE (diff))
{
bfd_perror (_("Can't Make it a Short Jump"));
return bfd_reloc_outofrange;
}
x = bfd_get_16 (abfd, addr);
x = x & LOW_WORD_MASK;
x = x | (diff << 8);
bfd_put_16 (abfd, (bfd_vma) x, addr);
return bfd_reloc_ok;
case ABSOLUTE_ADDR_FOR_DATA:
case LONG_JUMP:
addend = (reloc_entry->addend - reloc_entry->addend);
addend = reloc_entry->addend;
addend = 0;
if (!bfd_is_com_section (symbol_in->section) &&
((symbol_in->flags & BSF_OLD_COMMON) == 0))
{
if (reloc_entry->addend > symbol_in->value)
addend = reloc_entry->addend - symbol_in->value;
if ((reloc_entry->addend < symbol_in->value)
&& (reloc_entry->addend != 0))
addend = reloc_entry->addend - symbol_in->value;
if (reloc_entry->addend == symbol_in->value)
addend = 0;
}
if (bfd_is_com_section (symbol_in->section) ||
((symbol_in->flags & BSF_OLD_COMMON) != 0))
addend = reloc_entry->addend;
if (addend < 0
&& (call_addr < (long) (addend * (-1))))
addend = 0;
call_addr += addend;
if ((symbol_in->section->flags & SEC_CODE) == SEC_CODE)
{
call_addr = call_addr >> 1;
if (call_addr > 0xFFFF)
{
bfd_perror (_("Exceeds Long Jump Range"));
return bfd_reloc_outofrange;
}
}
else
{
if (call_addr > 0xFFFF)
{
bfd_perror (_("Absolute address Exceeds 16 bit Range"));
return bfd_reloc_outofrange;
}
}
x = bfd_get_32 (abfd, addr);
x = (x & 0xFF00FF00);
x = (x | ((call_addr & HIGH_WORD_MASK) >> 8));
x = (x | (call_addr & LOW_WORD_MASK) << 16);
bfd_put_32 (abfd, (bfd_vma) x, addr);
return bfd_reloc_ok;
case BFD_RELOC_8:
addend = (reloc_entry->addend - reloc_entry->addend);
if (!bfd_is_com_section (symbol_in->section) &&
((symbol_in->flags & BSF_OLD_COMMON) == 0))
{
if (reloc_entry->addend > symbol_in->value)
addend = reloc_entry->addend - symbol_in->value;
if (reloc_entry->addend < symbol_in->value)
addend = reloc_entry->addend - symbol_in->value;
if (reloc_entry->addend == symbol_in->value)
addend = 0;
}
if (bfd_is_com_section (symbol_in->section) ||
((symbol_in->flags & BSF_OLD_COMMON) != 0))
addend = reloc_entry->addend;
if (addend < 0
&& (call_addr < (long) (addend * (-1))))
addend = 0;
if (call_addr + addend > 0xFF)
{
bfd_perror (_("Absolute address Exceeds 8 bit Range"));
return bfd_reloc_outofrange;
}
x = bfd_get_8 (abfd, addr);
x = x & 0x00;
x = x | (call_addr + addend);
bfd_put_8 (abfd, (bfd_vma) x, addr);
return bfd_reloc_ok;
case BFD_RELOC_16:
addend = (reloc_entry->addend - reloc_entry->addend);
if (!bfd_is_com_section (symbol_in->section) &&
((symbol_in->flags & BSF_OLD_COMMON) == 0))
{
if (reloc_entry->addend > symbol_in->value)
addend = reloc_entry->addend - symbol_in->value;
if (reloc_entry->addend < symbol_in->value)
addend = reloc_entry->addend - symbol_in->value;
if (reloc_entry->addend == symbol_in->value)
addend = 0;
}
if (bfd_is_com_section (symbol_in->section) ||
((symbol_in->flags & BSF_OLD_COMMON) != 0))
addend = reloc_entry->addend;
if (addend < 0
&& (call_addr < (long) (addend * (-1))))
addend = 0;
if ((call_addr + addend) > 0xFFFF)
{
bfd_perror (_("Absolute address Exceeds 16 bit Range"));
return bfd_reloc_outofrange;
}
else
{
unsigned short val = (call_addr + addend);
x = bfd_get_16 (abfd, addr);
x = (x & 0x0000);
x = val;
if ((symbol_in->section->flags & SEC_CODE) == SEC_CODE)
x = x >> 1;
}
bfd_put_16 (abfd, (bfd_vma) x, addr);
return bfd_reloc_ok;
case BFD_RELOC_32:
addend = (reloc_entry->addend - reloc_entry->addend);
if (!bfd_is_com_section (symbol_in->section) &&
((symbol_in->flags & BSF_OLD_COMMON) == 0))
{
if (reloc_entry->addend > symbol_in->value)
addend = reloc_entry->addend - symbol_in->value;
if (reloc_entry->addend < symbol_in->value)
addend = reloc_entry->addend - symbol_in->value;
if (reloc_entry->addend == symbol_in->value)
addend = 0;
}
if (bfd_is_com_section (symbol_in->section) ||
((symbol_in->flags & BSF_OLD_COMMON) != 0))
addend = reloc_entry->addend;
if (addend < 0
&& (call_addr < (long) (addend * (-1))))
addend = 0;
if ((call_addr + addend) < 0)
{
bfd_perror ("Absolute address Exceeds 32 bit Range");
return bfd_reloc_outofrange;
}
x = bfd_get_32 (abfd, addr);
x = (x & 0x0000);
x = call_addr + addend;
if ((symbol_in->section->flags & SEC_CODE) == SEC_CODE)
x = x >> 1;
bfd_put_32 (abfd, (bfd_vma) x, addr);
return bfd_reloc_ok;
default:
bfd_perror (_("Unrecognized Reloc Type"));
return bfd_reloc_notsupported;
}
}
return bfd_reloc_notsupported;
}
static reloc_howto_type howto_table[] =
{
EMPTY_HOWTO (0),
EMPTY_HOWTO (1),
{
BFD_RELOC_32, 0, 1, 8, FALSE, 0, complain_overflow_bitfield,
coff_maxq20_reloc, "32Bit", TRUE, 0x000000ff, 0x000000ff, TRUE
},
{
SHORT_JUMP, 0, 1, 8, FALSE, 0, complain_overflow_bitfield,
coff_maxq20_reloc, "SHORT_JMP", TRUE, 0x000000ff, 0x000000ff, TRUE
},
{
ABSOLUTE_ADDR_FOR_DATA, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
coff_maxq20_reloc, "INTERSEGMENT_RELOC", TRUE, 0x00000000, 0x00000000,
FALSE
},
{
BFD_RELOC_16, 0, 1, 8, FALSE, 0, complain_overflow_bitfield,
coff_maxq20_reloc, "16Bit", TRUE, 0x000000ff, 0x000000ff, TRUE
},
{
LONG_JUMP, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
coff_maxq20_reloc, "LONG_JUMP", TRUE, 0x00000000, 0x00000000, FALSE
},
{
BFD_RELOC_8, 0, 1, 8, FALSE, 0, complain_overflow_bitfield,
coff_maxq20_reloc, "8bit", TRUE, 0x000000ff, 0x000000ff, TRUE
},
EMPTY_HOWTO (8),
EMPTY_HOWTO (9),
EMPTY_HOWTO (10),
};
typedef struct maxq_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
unsigned int maxq_reloc_val;
reloc_howto_type * table;
}
reloc_map;
static const reloc_map maxq_reloc_map[] =
{
{BFD_RELOC_16_PCREL_S2, SHORT_JUMP, howto_table},
{BFD_RELOC_16, LONG_JUMP, howto_table},
};
static reloc_howto_type *
maxq_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (maxq_reloc_map); i++)
{
const reloc_map *entry;
entry = maxq_reloc_map + i;
switch (code)
{
case BFD_RELOC_16_PCREL_S2:
return howto_table + 3;
case BFD_RELOC_24:
return howto_table + 4;
case BFD_RELOC_8:
return howto_table + 7;
case BFD_RELOC_16:
return howto_table + 5;
case BFD_RELOC_32:
return howto_table + 2;
case BFD_RELOC_14:
return howto_table + 6;
default:
return NULL;
}
}
return NULL;
}
#define coff_bfd_reloc_type_lookup maxq_reloc_type_lookup
#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
cache_ptr->addend = ext_reloc.r_offset;
#include "coffcode.h"
#ifndef TARGET_UNDERSCORE
#define TARGET_UNDERSCORE 1
#endif
#ifndef EXTRA_S_FLAGS
#define EXTRA_S_FLAGS 0
#endif
CREATE_LITTLE_COFF_TARGET_VEC (maxqcoff_vec, "coff-maxq", 0, EXTRA_S_FLAGS,
TARGET_UNDERSCORE, NULL, COFF_SWAP_TABLE);