#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf32-m68hc1x.h"
#include "elf/m68hc11.h"
#include "opcode/m68hc11.h"
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
static void m68hc11_info_to_howto_rel
(bfd *, arelent *, Elf_Internal_Rela *);
static bfd_boolean m68hc11_elf_size_one_stub
(struct bfd_hash_entry *gen_entry, void *in_arg);
static bfd_boolean m68hc11_elf_build_one_stub
(struct bfd_hash_entry *gen_entry, void *in_arg);
static struct bfd_link_hash_table* m68hc11_elf_bfd_link_hash_table_create
(bfd* abfd);
static bfd_boolean m68hc11_elf_relax_section
(bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
static void m68hc11_elf_relax_delete_bytes
(bfd *, asection *, bfd_vma, int);
static void m68hc11_relax_group
(bfd *, asection *, bfd_byte *, unsigned, unsigned long, unsigned long);
static int compare_reloc (const void *, const void *);
#define USE_REL 1
static reloc_howto_type elf_m68hc11_howto_table[] = {
HOWTO (R_M68HC11_NONE,
0,
2,
32,
FALSE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_M68HC11_NONE",
FALSE,
0,
0,
FALSE),
HOWTO (R_M68HC11_8,
0,
0,
8,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_M68HC11_8",
FALSE,
0x00ff,
0x00ff,
FALSE),
HOWTO (R_M68HC11_HI8,
8,
0,
8,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_M68HC11_HI8",
FALSE,
0x00ff,
0x00ff,
FALSE),
HOWTO (R_M68HC11_LO8,
0,
0,
8,
FALSE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_M68HC11_LO8",
FALSE,
0x00ff,
0x00ff,
FALSE),
HOWTO (R_M68HC11_PCREL_8,
0,
0,
8,
TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_M68HC11_PCREL_8",
FALSE,
0x00ff,
0x00ff,
TRUE),
HOWTO (R_M68HC11_16,
0,
1,
16,
FALSE,
0,
complain_overflow_dont ,
bfd_elf_generic_reloc,
"R_M68HC11_16",
FALSE,
0xffff,
0xffff,
FALSE),
HOWTO (R_M68HC11_32,
0,
2,
32,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_M68HC11_32",
FALSE,
0xffffffff,
0xffffffff,
FALSE),
HOWTO (R_M68HC11_3B,
0,
0,
3,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_M68HC11_4B",
FALSE,
0x003,
0x003,
FALSE),
HOWTO (R_M68HC11_PCREL_16,
0,
1,
16,
TRUE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_M68HC11_PCREL_16",
FALSE,
0xffff,
0xffff,
TRUE),
HOWTO (R_M68HC11_GNU_VTINHERIT,
0,
1,
0,
FALSE,
0,
complain_overflow_dont,
NULL,
"R_M68HC11_GNU_VTINHERIT",
FALSE,
0,
0,
FALSE),
HOWTO (R_M68HC11_GNU_VTENTRY,
0,
1,
0,
FALSE,
0,
complain_overflow_dont,
_bfd_elf_rel_vtable_reloc_fn,
"R_M68HC11_GNU_VTENTRY",
FALSE,
0,
0,
FALSE),
HOWTO (R_M68HC11_24,
0,
1,
24,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_M68HC11_24",
FALSE,
0xffffff,
0xffffff,
FALSE),
HOWTO (R_M68HC11_LO16,
0,
1,
16,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_M68HC11_LO16",
FALSE,
0xffff,
0xffff,
FALSE),
HOWTO (R_M68HC11_PAGE,
0,
0,
8,
FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_M68HC11_PAGE",
FALSE,
0x00ff,
0x00ff,
FALSE),
EMPTY_HOWTO (14),
EMPTY_HOWTO (15),
EMPTY_HOWTO (16),
EMPTY_HOWTO (17),
EMPTY_HOWTO (18),
EMPTY_HOWTO (19),
HOWTO (R_M68HC11_RL_JUMP,
0,
1,
0,
FALSE,
0,
complain_overflow_dont,
m68hc11_elf_ignore_reloc,
"R_M68HC11_RL_JUMP",
TRUE,
0,
0,
TRUE),
HOWTO (R_M68HC11_RL_GROUP,
0,
1,
0,
FALSE,
0,
complain_overflow_dont,
m68hc11_elf_ignore_reloc,
"R_M68HC11_RL_GROUP",
TRUE,
0,
0,
TRUE),
};
struct m68hc11_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
unsigned char elf_reloc_val;
};
static const struct m68hc11_reloc_map m68hc11_reloc_map[] = {
{BFD_RELOC_NONE, R_M68HC11_NONE,},
{BFD_RELOC_8, R_M68HC11_8},
{BFD_RELOC_M68HC11_HI8, R_M68HC11_HI8},
{BFD_RELOC_M68HC11_LO8, R_M68HC11_LO8},
{BFD_RELOC_8_PCREL, R_M68HC11_PCREL_8},
{BFD_RELOC_16_PCREL, R_M68HC11_PCREL_16},
{BFD_RELOC_16, R_M68HC11_16},
{BFD_RELOC_32, R_M68HC11_32},
{BFD_RELOC_M68HC11_3B, R_M68HC11_3B},
{BFD_RELOC_VTABLE_INHERIT, R_M68HC11_GNU_VTINHERIT},
{BFD_RELOC_VTABLE_ENTRY, R_M68HC11_GNU_VTENTRY},
{BFD_RELOC_M68HC11_LO16, R_M68HC11_LO16},
{BFD_RELOC_M68HC11_PAGE, R_M68HC11_PAGE},
{BFD_RELOC_M68HC11_24, R_M68HC11_24},
{BFD_RELOC_M68HC11_RL_JUMP, R_M68HC11_RL_JUMP},
{BFD_RELOC_M68HC11_RL_GROUP, R_M68HC11_RL_GROUP},
};
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 (m68hc11_reloc_map) / sizeof (struct m68hc11_reloc_map);
i++)
{
if (m68hc11_reloc_map[i].bfd_reloc_val == code)
return &elf_m68hc11_howto_table[m68hc11_reloc_map[i].elf_reloc_val];
}
return NULL;
}
static void
m68hc11_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_M68HC11_max);
cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
}
static bfd_boolean
m68hc11_elf_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
{
struct elf32_m68hc11_stub_hash_entry *stub_entry;
struct bfd_link_info *info;
struct m68hc11_elf_link_hash_table *htab;
asection *stub_sec;
bfd *stub_bfd;
bfd_byte *loc;
bfd_vma sym_value, phys_page, phys_addr;
stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
info = (struct bfd_link_info *) in_arg;
htab = m68hc11_elf_hash_table (info);
stub_sec = stub_entry->stub_sec;
stub_entry->stub_offset = stub_sec->size;
stub_sec->size += 10;
loc = stub_sec->contents + stub_entry->stub_offset;
stub_bfd = stub_sec->owner;
sym_value = (stub_entry->target_value
+ stub_entry->target_section->output_offset
+ stub_entry->target_section->output_section->vma);
phys_addr = m68hc11_phys_addr (&htab->pinfo, sym_value);
phys_page = m68hc11_phys_page (&htab->pinfo, sym_value);
bfd_put_8 (stub_bfd, 0x37, loc);
bfd_put_8 (stub_bfd, 0xC6, loc + 1);
bfd_put_8 (stub_bfd, phys_page, loc + 2);
loc += 3;
bfd_put_8 (stub_bfd, 0x18, loc);
bfd_put_8 (stub_bfd, 0xCE, loc + 1);
bfd_put_16 (stub_bfd, phys_addr, loc + 2);
loc += 4;
bfd_put_8 (stub_bfd, 0x7E, loc);
bfd_put_16 (stub_bfd, htab->pinfo.trampoline_addr, loc + 1);
return TRUE;
}
static bfd_boolean
m68hc11_elf_size_one_stub (struct bfd_hash_entry *gen_entry,
void *in_arg ATTRIBUTE_UNUSED)
{
struct elf32_m68hc11_stub_hash_entry *stub_entry;
stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
stub_entry->stub_sec->size += 10;
return TRUE;
}
static struct bfd_link_hash_table *
m68hc11_elf_bfd_link_hash_table_create (bfd *abfd)
{
struct m68hc11_elf_link_hash_table *ret;
ret = m68hc11_elf_hash_table_create (abfd);
if (ret == (struct m68hc11_elf_link_hash_table *) NULL)
return NULL;
ret->size_one_stub = m68hc11_elf_size_one_stub;
ret->build_one_stub = m68hc11_elf_build_one_stub;
return &ret->root.root;
}
struct m68hc11_direct_relax
{
const char *name;
unsigned char code;
unsigned char direct_code;
} m68hc11_direct_relax_table[] = {
{ "adca", 0xB9, 0x99 },
{ "adcb", 0xF9, 0xD9 },
{ "adda", 0xBB, 0x9B },
{ "addb", 0xFB, 0xDB },
{ "addd", 0xF3, 0xD3 },
{ "anda", 0xB4, 0x94 },
{ "andb", 0xF4, 0xD4 },
{ "cmpa", 0xB1, 0x91 },
{ "cmpb", 0xF1, 0xD1 },
{ "cpd", 0xB3, 0x93 },
{ "cpxy", 0xBC, 0x9C },
{ "eora", 0xB8, 0x98 },
{ "eorb", 0xF8, 0xD8 },
{ "jsr", 0xBD, 0x9D },
{ "ldaa", 0xB6, 0x96 },
{ "ldab", 0xF6, 0xD6 },
{ "ldd", 0xFC, 0xDC },
{ "lds", 0xBE, 0x9E },
{ "ldxy", 0xFE, 0xDE },
{ "oraa", 0xBA, 0x9A },
{ "orab", 0xFA, 0xDA },
{ "sbca", 0xB2, 0x92 },
{ "sbcb", 0xF2, 0xD2 },
{ "staa", 0xB7, 0x97 },
{ "stab", 0xF7, 0xD7 },
{ "std", 0xFD, 0xDD },
{ "sts", 0xBF, 0x9F },
{ "stxy", 0xFF, 0xDF },
{ "suba", 0xB0, 0x90 },
{ "subb", 0xF0, 0xD0 },
{ "subd", 0xB3, 0x93 },
{ 0, 0, 0 }
};
static struct m68hc11_direct_relax *
find_relaxable_insn (unsigned char code)
{
int i;
for (i = 0; m68hc11_direct_relax_table[i].name; i++)
if (m68hc11_direct_relax_table[i].code == code)
return &m68hc11_direct_relax_table[i];
return 0;
}
static int
compare_reloc (const void *e1, const void *e2)
{
const Elf_Internal_Rela *i1 = (const Elf_Internal_Rela *) e1;
const Elf_Internal_Rela *i2 = (const Elf_Internal_Rela *) e2;
if (i1->r_offset == i2->r_offset)
return 0;
else
return i1->r_offset < i2->r_offset ? -1 : 1;
}
#define M6811_OP_LDX_IMMEDIATE (0xCE)
static void
m68hc11_relax_group (bfd *abfd, asection *sec, bfd_byte *contents,
unsigned value, unsigned long offset,
unsigned long end_group)
{
unsigned char code;
unsigned long start_offset;
unsigned long ldx_offset = offset;
unsigned long ldx_size;
int can_delete_ldx;
int relax_ldy = 0;
code = bfd_get_8 (abfd, contents + offset);
if (code == 0x18)
{
relax_ldy++;
offset++;
code = bfd_get_8 (abfd, contents + offset);
}
ldx_size = offset - ldx_offset + 3;
offset += 3;
if (code != M6811_OP_LDX_IMMEDIATE || offset >= end_group)
return;
can_delete_ldx = 1;
while (offset < end_group)
{
unsigned isize;
unsigned new_value;
int bset_use_y;
bset_use_y = 0;
start_offset = offset;
code = bfd_get_8 (abfd, contents + offset);
if (code == 0x18)
{
bset_use_y++;
offset++;
code = bfd_get_8 (abfd, contents + offset);
}
switch (code)
{
case 0x1C:
code = 0x14;
isize = 3;
break;
case 0x1F:
code = 0x13;
isize = 4;
break;
case 0x1E:
code = 0x12;
isize = 4;
break;
case 0x1D:
code = 0x15;
isize = 3;
break;
default:
return;
}
new_value = (unsigned) bfd_get_8 (abfd, contents + offset + 1);
new_value += value;
if ((new_value & 0xff00) == 0 && bset_use_y == relax_ldy)
{
bfd_put_8 (abfd, code, contents + offset);
bfd_put_8 (abfd, new_value, contents + offset + 1);
if (start_offset != offset)
{
m68hc11_elf_relax_delete_bytes (abfd, sec, start_offset,
offset - start_offset);
end_group--;
}
}
else
{
can_delete_ldx = 0;
}
offset = start_offset + isize;
}
if (can_delete_ldx)
{
m68hc11_elf_relax_delete_bytes (abfd, sec, ldx_offset, ldx_size);
}
}
static bfd_boolean
m68hc11_elf_relax_section (bfd *abfd, asection *sec,
struct bfd_link_info *link_info, bfd_boolean *again)
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Shdr *shndx_hdr;
Elf_Internal_Rela *internal_relocs;
Elf_Internal_Rela *free_relocs = NULL;
Elf_Internal_Rela *irel, *irelend;
bfd_byte *contents = NULL;
bfd_byte *free_contents = NULL;
Elf32_External_Sym *free_extsyms = NULL;
Elf_Internal_Rela *prev_insn_branch = NULL;
Elf_Internal_Rela *prev_insn_group = NULL;
unsigned insn_group_value = 0;
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;
shndx_hdr = &elf_tdata (abfd)->symtab_shndx_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;
if (! link_info->keep_memory)
free_relocs = internal_relocs;
qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
compare_reloc);
irelend = internal_relocs + sec->reloc_count;
for (irel = internal_relocs; irel < irelend; irel++)
{
bfd_vma symval;
bfd_vma value;
Elf_Internal_Sym *isym;
asection *sym_sec;
int is_far = 0;
if (ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_16
&& ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_JUMP
&& ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_GROUP)
{
prev_insn_branch = 0;
prev_insn_group = 0;
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 (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_JUMP)
{
Elf_Internal_Rela *nrel;
unsigned char code;
unsigned char roffset;
prev_insn_branch = 0;
prev_insn_group = 0;
if (irel->r_offset + 2 >= sec->size)
continue;
code = bfd_get_8 (abfd, contents + irel->r_offset + 2);
if (code != 0x7e)
continue;
nrel = irel + 1;
if (nrel == irelend
|| irel->r_offset + 3 != nrel->r_offset
|| ELF32_R_TYPE (nrel->r_info) != (int) R_M68HC11_16)
continue;
roffset = bfd_get_8 (abfd, contents + irel->r_offset + 1);
if (roffset != 3)
continue;
prev_insn_branch = irel;
prev_insn_group = 0;
continue;
}
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)
{
isym = isymbuf + ELF32_R_SYM (irel->r_info);
is_far = isym->st_other & STO_M68HC12_FAR;
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)
{
prev_insn_branch = 0;
prev_insn_group = 0;
continue;
}
is_far = h->other & STO_M68HC12_FAR;
isym = 0;
sym_sec = h->root.u.def.section;
symval = (h->root.u.def.value
+ sym_sec->output_section->vma
+ sym_sec->output_offset);
}
if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_GROUP)
{
prev_insn_branch = 0;
prev_insn_group = 0;
if (irel->r_offset == sec->size)
continue;
prev_insn_group = irel;
insn_group_value = isym->st_value;
continue;
}
if (*again && sym_sec != sec
&& sym_sec->output_section == sec->output_section)
{
prev_insn_group = 0;
prev_insn_branch = 0;
continue;
}
value = symval;
if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
&& prev_insn_branch)
{
bfd_vma offset;
unsigned char code;
offset = value - (prev_insn_branch->r_offset
+ sec->output_section->vma
+ sec->output_offset + 2);
if ((offset & 0xff80) != 0 && (offset & 0xff80) != 0xff80)
{
prev_insn_branch = 0;
continue;
}
code = bfd_get_8 (abfd, contents + prev_insn_branch->r_offset);
if (code == 0x7e)
{
code = 0x20;
bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
bfd_put_8 (abfd, 0xff,
contents + prev_insn_branch->r_offset + 1);
irel->r_offset = prev_insn_branch->r_offset + 1;
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_M68HC11_PCREL_8);
m68hc11_elf_relax_delete_bytes (abfd, sec,
irel->r_offset + 1, 1);
}
else
{
code ^= 0x1;
bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
bfd_put_8 (abfd, 0xff,
contents + prev_insn_branch->r_offset + 1);
irel->r_offset = prev_insn_branch->r_offset + 1;
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_M68HC11_PCREL_8);
m68hc11_elf_relax_delete_bytes (abfd, sec,
irel->r_offset + 1, 3);
}
prev_insn_branch = 0;
*again = TRUE;
}
else if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
&& (value & 0xff00) == 0)
{
unsigned char code;
unsigned short offset;
struct m68hc11_direct_relax *rinfo;
prev_insn_branch = 0;
offset = bfd_get_16 (abfd, contents + irel->r_offset);
offset += value;
if ((offset & 0xff00) != 0)
{
prev_insn_group = 0;
continue;
}
if (prev_insn_group)
{
unsigned long old_sec_size = sec->size;
elf_section_data (sec)->relocs = internal_relocs;
free_relocs = NULL;
elf_section_data (sec)->this_hdr.contents = contents;
free_contents = NULL;
symtab_hdr->contents = (bfd_byte *) isymbuf;
free_extsyms = NULL;
m68hc11_relax_group (abfd, sec, contents, offset,
prev_insn_group->r_offset,
insn_group_value);
irel = prev_insn_group;
prev_insn_group = 0;
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_M68HC11_NONE);
if (sec->size != old_sec_size)
*again = TRUE;
continue;
}
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
rinfo = find_relaxable_insn (code);
if (rinfo == 0)
{
prev_insn_group = 0;
continue;
}
elf_section_data (sec)->relocs = internal_relocs;
free_relocs = NULL;
elf_section_data (sec)->this_hdr.contents = contents;
free_contents = NULL;
symtab_hdr->contents = (bfd_byte *) isymbuf;
free_extsyms = NULL;
bfd_put_8 (abfd, rinfo->direct_code,
contents + irel->r_offset - 1);
m68hc11_elf_relax_delete_bytes (abfd, sec, irel->r_offset, 1);
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_M68HC11_8);
*again = TRUE;
}
else if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_16 && !is_far)
{
unsigned char code;
bfd_vma offset;
prev_insn_branch = 0;
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
if (code == 0x7e || code == 0xbd)
{
offset = value - (irel->r_offset
+ sec->output_section->vma
+ sec->output_offset + 1);
offset += bfd_get_16 (abfd, contents + irel->r_offset);
if ((offset & 0xff80) == 0 || (offset & 0xff80) == 0xff80)
{
elf_section_data (sec)->relocs = internal_relocs;
free_relocs = NULL;
elf_section_data (sec)->this_hdr.contents = contents;
free_contents = NULL;
symtab_hdr->contents = (bfd_byte *) isymbuf;
free_extsyms = NULL;
code = (code == 0x7e) ? 0x20 : 0x8d;
bfd_put_8 (abfd, code,
contents + irel->r_offset - 1);
bfd_put_8 (abfd, 0xff,
contents + irel->r_offset);
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_M68HC11_PCREL_8);
m68hc11_elf_relax_delete_bytes (abfd, sec,
irel->r_offset + 1, 1);
*again = TRUE;
}
}
}
prev_insn_branch = 0;
prev_insn_group = 0;
}
if (free_relocs != NULL)
{
free (free_relocs);
free_relocs = NULL;
}
if (free_contents != NULL)
{
if (! link_info->keep_memory)
free (free_contents);
else
{
elf_section_data (sec)->this_hdr.contents = contents;
}
free_contents = NULL;
}
if (free_extsyms != NULL)
{
if (! link_info->keep_memory)
free (free_extsyms);
else
{
symtab_hdr->contents = (unsigned char *) isymbuf;
}
free_extsyms = NULL;
}
return TRUE;
error_return:
if (free_relocs != NULL)
free (free_relocs);
if (free_contents != NULL)
free (free_contents);
if (free_extsyms != NULL)
free (free_extsyms);
return FALSE;
}
static void
m68hc11_elf_relax_delete_bytes (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;
bfd_vma toaddr;
Elf_Internal_Sym *isymbuf, *isym, *isymend;
struct elf_link_hash_entry **sym_hashes;
struct elf_link_hash_entry **end_hashes;
unsigned int symcount;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
contents = elf_section_data (sec)->this_hdr.contents;
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++)
{
unsigned char code;
unsigned char offset;
unsigned short raddr;
unsigned long old_offset;
int branch_pos;
old_offset = irel->r_offset;
if (ELF32_R_TYPE (irel->r_info) != R_M68HC11_RL_JUMP
&& irel->r_offset >= addr && irel->r_offset < addr + count)
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_M68HC11_NONE);
if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_NONE)
continue;
if ((irel->r_offset > addr
&& irel->r_offset < toaddr))
irel->r_offset -= count;
switch (ELF32_R_TYPE (irel->r_info))
{
default:
break;
case R_M68HC11_RL_JUMP:
code = bfd_get_8 (abfd, contents + irel->r_offset);
switch (code)
{
case 0x7e:
case 0x9d:
case 0xbd:
continue;
case 0x12:
case 0x13:
branch_pos = 3;
raddr = 4;
if (old_offset == addr)
raddr++;
break;
case 0x1e:
case 0x1f:
branch_pos = 3;
raddr = 4;
break;
case 0x18:
branch_pos = 4;
raddr = 5;
break;
default:
branch_pos = 1;
raddr = 2;
break;
}
offset = bfd_get_8 (abfd, contents + irel->r_offset + branch_pos);
raddr += old_offset;
raddr += ((unsigned short) offset | ((offset & 0x80) ? 0xff00 : 0));
if (irel->r_offset < addr && raddr > addr)
{
offset -= count;
bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
}
else if (irel->r_offset >= addr && raddr <= addr)
{
offset += count;
bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
}
else
{
}
break;
}
}
isymend = isymbuf + symtab_hdr->sh_info;
for (isym = isymbuf; isym < isymend; isym++)
{
if (isym->st_shndx == sec_shndx
&& isym->st_value > addr
&& isym->st_value <= toaddr)
isym->st_value -= count;
}
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
- symtab_hdr->sh_info);
sym_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 ((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;
}
}
}
static const struct bfd_elf_special_section elf32_m68hc11_special_sections[] =
{
{ ".eeprom", 7, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ ".page0", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
{ ".softregs", 9, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
{ ".vectors", 8, 0, SHT_PROGBITS, SHF_ALLOC },
{ NULL, 0, 0, 0, 0 }
};
#define ELF_ARCH bfd_arch_m68hc11
#define ELF_MACHINE_CODE EM_68HC11
#define ELF_MAXPAGESIZE 0x1000
#define TARGET_BIG_SYM bfd_elf32_m68hc11_vec
#define TARGET_BIG_NAME "elf32-m68hc11"
#define elf_info_to_howto 0
#define elf_info_to_howto_rel m68hc11_info_to_howto_rel
#define bfd_elf32_bfd_relax_section m68hc11_elf_relax_section
#define elf_backend_gc_mark_hook elf32_m68hc11_gc_mark_hook
#define elf_backend_gc_sweep_hook elf32_m68hc11_gc_sweep_hook
#define elf_backend_check_relocs elf32_m68hc11_check_relocs
#define elf_backend_relocate_section elf32_m68hc11_relocate_section
#define elf_backend_add_symbol_hook elf32_m68hc11_add_symbol_hook
#define elf_backend_object_p 0
#define elf_backend_final_write_processing 0
#define elf_backend_can_gc_sections 1
#define elf_backend_special_sections elf32_m68hc11_special_sections
#define bfd_elf32_bfd_link_hash_table_create \
m68hc11_elf_bfd_link_hash_table_create
#define bfd_elf32_bfd_link_hash_table_free \
m68hc11_elf_bfd_link_hash_table_free
#define bfd_elf32_bfd_merge_private_bfd_data \
_bfd_m68hc11_elf_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data \
_bfd_m68hc11_elf_print_private_bfd_data
#include "elf32-target.h"