#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "genlink.h"
#include "bout.h"
#include "libiberty.h"
#include "aout/stab_gnu.h"
#include "libaout.h"
#define ABS32CODE 0
#define ABS32CODE_SHRUNK 1
#define PCREL24 2
#define CALLJ 3
#define ABS32 4
#define PCREL13 5
#define ABS32_MAYBE_RELAXABLE 1
#define ABS32_WAS_RELAXABLE 2
#define ALIGNER 10
#define ALIGNDONE 11
static reloc_howto_type howto_reloc_callj =
HOWTO (CALLJ, 0, 2, 24, TRUE, 0, complain_overflow_signed, 0,"callj", TRUE, 0x00ffffff, 0x00ffffff,FALSE);
static reloc_howto_type howto_reloc_abs32 =
HOWTO (ABS32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"abs32", TRUE, 0xffffffff,0xffffffff,FALSE);
static reloc_howto_type howto_reloc_pcrel24 =
HOWTO (PCREL24, 0, 2, 24, TRUE, 0, complain_overflow_signed,0,"pcrel24", TRUE, 0x00ffffff,0x00ffffff,FALSE);
static reloc_howto_type howto_reloc_pcrel13 =
HOWTO (PCREL13, 0, 2, 13, TRUE, 0, complain_overflow_signed,0,"pcrel13", TRUE, 0x00001fff,0x00001fff,FALSE);
static reloc_howto_type howto_reloc_abs32codeshrunk =
HOWTO (ABS32CODE_SHRUNK, 0, 2, 24, TRUE, 0, complain_overflow_signed, 0,"callx->callj", TRUE, 0x00ffffff, 0x00ffffff,FALSE);
static reloc_howto_type howto_reloc_abs32code =
HOWTO (ABS32CODE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"callx", TRUE, 0xffffffff,0xffffffff,FALSE);
static reloc_howto_type howto_align_table[] =
{
HOWTO (ALIGNER, 0, 0x1, 0, FALSE, 0, complain_overflow_dont, 0, "align16", FALSE, 0, 0, FALSE),
HOWTO (ALIGNER, 0, 0x3, 0, FALSE, 0, complain_overflow_dont, 0, "align32", FALSE, 0, 0, FALSE),
HOWTO (ALIGNER, 0, 0x7, 0, FALSE, 0, complain_overflow_dont, 0, "align64", FALSE, 0, 0, FALSE),
HOWTO (ALIGNER, 0, 0xf, 0, FALSE, 0, complain_overflow_dont, 0, "align128", FALSE, 0, 0, FALSE),
};
static reloc_howto_type howto_done_align_table[] =
{
HOWTO (ALIGNDONE, 0x1, 0x1, 0, FALSE, 0, complain_overflow_dont, 0, "donealign16", FALSE, 0, 0, FALSE),
HOWTO (ALIGNDONE, 0x3, 0x3, 0, FALSE, 0, complain_overflow_dont, 0, "donealign32", FALSE, 0, 0, FALSE),
HOWTO (ALIGNDONE, 0x7, 0x7, 0, FALSE, 0, complain_overflow_dont, 0, "donealign64", FALSE, 0, 0, FALSE),
HOWTO (ALIGNDONE, 0xf, 0xf, 0, FALSE, 0, complain_overflow_dont, 0, "donealign128", FALSE, 0, 0, FALSE),
};
static void
bout_swap_exec_header_in (bfd *abfd,
struct external_exec *bytes,
struct internal_exec *execp)
{
execp->a_info = H_GET_32 (abfd, bytes->e_info);
execp->a_text = GET_WORD (abfd, bytes->e_text);
execp->a_data = GET_WORD (abfd, bytes->e_data);
execp->a_bss = GET_WORD (abfd, bytes->e_bss);
execp->a_syms = GET_WORD (abfd, bytes->e_syms);
execp->a_entry = GET_WORD (abfd, bytes->e_entry);
execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
execp->a_tload = GET_WORD (abfd, bytes->e_tload);
execp->a_dload = GET_WORD (abfd, bytes->e_dload);
execp->a_talign = bytes->e_talign[0];
execp->a_dalign = bytes->e_dalign[0];
execp->a_balign = bytes->e_balign[0];
execp->a_relaxable = bytes->e_relaxable[0];
}
static void
bout_swap_exec_header_out (bfd *abfd,
struct internal_exec *execp,
struct external_exec *bytes)
{
H_PUT_32 (abfd, execp->a_info , bytes->e_info);
PUT_WORD (abfd, execp->a_text , bytes->e_text);
PUT_WORD (abfd, execp->a_data , bytes->e_data);
PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
PUT_WORD (abfd, execp->a_tload , bytes->e_tload);
PUT_WORD (abfd, execp->a_dload , bytes->e_dload);
bytes->e_talign[0] = execp->a_talign;
bytes->e_dalign[0] = execp->a_dalign;
bytes->e_balign[0] = execp->a_balign;
bytes->e_relaxable[0] = execp->a_relaxable;
}
static const bfd_target *
b_out_callback (bfd *abfd)
{
struct internal_exec *execp = exec_hdr (abfd);
unsigned long bss_start;
bfd_set_arch_mach (abfd,
bfd_arch_i960,
bfd_mach_i960_core
);
obj_str_filepos (abfd) = N_STROFF (*execp);
obj_sym_filepos (abfd) = N_SYMOFF (*execp);
obj_textsec (abfd)->alignment_power = execp->a_talign;
obj_datasec (abfd)->alignment_power = execp->a_dalign;
obj_bsssec (abfd)->alignment_power = execp->a_balign;
obj_textsec (abfd)->vma = execp->a_tload;
obj_datasec (abfd)->vma = execp->a_dload;
obj_textsec (abfd)->lma = obj_textsec (abfd)->vma;
obj_datasec (abfd)->lma = obj_datasec (abfd)->vma;
obj_textsec (abfd)->size = execp->a_text;
bss_start = execp->a_dload + execp->a_data;
obj_bsssec (abfd)->vma = align_power (bss_start, execp->a_balign);
obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma;
obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
obj_datasec (abfd)->filepos = N_DATOFF (*execp);
obj_textsec (abfd)->rel_filepos = N_TROFF (*execp);
obj_datasec (abfd)->rel_filepos = N_DROFF (*execp);
adata (abfd).page_size = 1;
adata (abfd).segment_size = 1;
adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
if (execp->a_relaxable)
abfd->flags |= BFD_IS_RELAXABLE;
return abfd->xvec;
}
static const bfd_target *
b_out_object_p (bfd *abfd)
{
struct internal_exec anexec;
struct external_exec exec_bytes;
bfd_size_type amt = EXEC_BYTES_SIZE;
if (bfd_bread ((void *) &exec_bytes, amt, abfd) != amt)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
return 0;
}
anexec.a_info = H_GET_32 (abfd, exec_bytes.e_info);
if (N_BADMAG (anexec))
{
bfd_set_error (bfd_error_wrong_format);
return 0;
}
bout_swap_exec_header_in (abfd, &exec_bytes, &anexec);
return aout_32_some_aout_object_p (abfd, &anexec, b_out_callback);
}
struct bout_data_struct
{
struct aoutdata a;
struct internal_exec e;
};
static bfd_boolean
b_out_mkobject (bfd *abfd)
{
struct bout_data_struct *rawptr;
bfd_size_type amt = sizeof (struct bout_data_struct);
rawptr = bfd_zalloc (abfd, amt);
if (rawptr == NULL)
return FALSE;
abfd->tdata.bout_data = rawptr;
exec_hdr (abfd) = &rawptr->e;
obj_textsec (abfd) = NULL;
obj_datasec (abfd) = NULL;
obj_bsssec (abfd) = NULL;
return TRUE;
}
static int
b_out_symbol_cmp (const void * a_ptr, const void * b_ptr)
{
struct aout_symbol ** a = (struct aout_symbol **) a_ptr;
struct aout_symbol ** b = (struct aout_symbol **) b_ptr;
asection *sec;
bfd_vma av, bv;
sec = bfd_get_section (&(*a)->symbol);
av = sec->output_section->vma + sec->output_offset + (*a)->symbol.value;
sec = bfd_get_section (&(*b)->symbol);
bv = sec->output_section->vma + sec->output_offset + (*b)->symbol.value;
if (av < bv)
return -1;
if (av > bv)
return 1;
if (IS_BALNAME ((*a)->other) || IS_CALLNAME ((*b)->other))
return -1;
if (IS_CALLNAME ((*a)->other) || IS_BALNAME ((*b)->other))
return 1;
return 0;
}
static bfd_boolean
b_out_squirt_out_relocs (bfd *abfd, asection *section)
{
arelent **generic;
int r_extern = 0;
int r_idx;
int incode_mask;
int len_1;
unsigned int count = section->reloc_count;
struct relocation_info *native, *natptr;
bfd_size_type natsize;
int extern_mask, pcrel_mask, len_2, callj_mask;
if (count == 0)
return TRUE;
generic = section->orelocation;
natsize = (bfd_size_type) count * sizeof (struct relocation_info);
native = bfd_malloc (natsize);
if (!native && natsize != 0)
return FALSE;
if (bfd_header_big_endian (abfd))
{
pcrel_mask = 0x80;
extern_mask = 0x10;
len_2 = 0x40;
len_1 = 0x20;
callj_mask = 0x02;
incode_mask = 0x08;
}
else
{
pcrel_mask = 0x01;
extern_mask = 0x08;
len_2 = 0x04;
len_1 = 0x02;
callj_mask = 0x40;
incode_mask = 0x10;
}
for (natptr = native; count > 0; --count, ++natptr, ++generic)
{
arelent *g = *generic;
unsigned char *raw = (unsigned char *) natptr;
asymbol *sym = *(g->sym_ptr_ptr);
asection *output_section = sym->section->output_section;
H_PUT_32 (abfd, g->address, raw);
r_idx = 0;
if (g->howto== &howto_reloc_callj)
raw[7] = callj_mask + pcrel_mask + len_2;
else if (g->howto == &howto_reloc_pcrel24)
raw[7] = pcrel_mask + len_2;
else if (g->howto == &howto_reloc_pcrel13)
raw[7] = pcrel_mask + len_1;
else if (g->howto == &howto_reloc_abs32code)
raw[7] = len_2 + incode_mask;
else if (g->howto >= howto_align_table
&& g->howto <= (howto_align_table + ARRAY_SIZE (howto_align_table) - 1))
{
r_idx = -2;
r_extern = 0;
raw[7] = (pcrel_mask
| ((g->howto - howto_align_table) << 1));
}
else
raw[7] = len_2;
if (r_idx != 0)
;
else if (bfd_is_com_section (output_section)
|| bfd_is_abs_section (output_section)
|| bfd_is_und_section (output_section))
{
if (bfd_abs_section_ptr->symbol == sym)
{
r_idx = 0;
r_extern = 0;
}
else
{
r_extern = 1;
r_idx = (*g->sym_ptr_ptr)->udata.i;
}
}
else
{
r_extern = 0;
r_idx = output_section->target_index;
}
if (bfd_header_big_endian (abfd))
{
raw[4] = (unsigned char) (r_idx >> 16);
raw[5] = (unsigned char) (r_idx >> 8);
raw[6] = (unsigned char) (r_idx );
}
else
{
raw[6] = (unsigned char) (r_idx >> 16);
raw[5] = (unsigned char) (r_idx>> 8);
raw[4] = (unsigned char) (r_idx );
}
if (r_extern)
raw[7] |= extern_mask;
}
if (bfd_bwrite ((void *) native, natsize, abfd) != natsize)
{
free (native);
return FALSE;
}
free (native);
return TRUE;
}
static bfd_boolean
b_out_write_object_contents (bfd *abfd)
{
struct external_exec swapped_hdr;
bfd_size_type amt;
if (! aout_32_make_sections (abfd))
return FALSE;
exec_hdr (abfd)->a_info = BMAGIC;
exec_hdr (abfd)->a_text = obj_textsec (abfd)->size;
exec_hdr (abfd)->a_data = obj_datasec (abfd)->size;
exec_hdr (abfd)->a_bss = obj_bsssec (abfd)->size;
exec_hdr (abfd)->a_syms = bfd_get_symcount (abfd) * 12;
exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
exec_hdr (abfd)->a_trsize = (obj_textsec (abfd)->reloc_count) * 8;
exec_hdr (abfd)->a_drsize = (obj_datasec (abfd)->reloc_count) * 8;
exec_hdr (abfd)->a_talign = obj_textsec (abfd)->alignment_power;
exec_hdr (abfd)->a_dalign = obj_datasec (abfd)->alignment_power;
exec_hdr (abfd)->a_balign = obj_bsssec (abfd)->alignment_power;
exec_hdr (abfd)->a_tload = obj_textsec (abfd)->vma;
exec_hdr (abfd)->a_dload = obj_datasec (abfd)->vma;
bout_swap_exec_header_out (abfd, exec_hdr (abfd), &swapped_hdr);
amt = EXEC_BYTES_SIZE;
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
|| bfd_bwrite ((void *) &swapped_hdr, amt, abfd) != amt)
return FALSE;
if (bfd_get_symcount (abfd) != 0)
{
asymbol **outsyms, **p, **q;
outsyms = bfd_get_outsymbols (abfd);
p = outsyms + bfd_get_symcount (abfd);
for (q = p--; p >= outsyms; p--)
{
if ((*p)->flags & BSF_DEBUGGING)
{
asymbol *t = *--q;
*q = *p;
*p = t;
}
}
if (q > outsyms)
qsort (outsyms, (size_t) (q - outsyms), sizeof (asymbol*),
b_out_symbol_cmp);
if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (*exec_hdr (abfd))), SEEK_SET)
!= 0)
return FALSE;
if (! aout_32_write_syms (abfd))
return FALSE;
if (bfd_seek (abfd, (file_ptr) (N_TROFF (*exec_hdr (abfd))), SEEK_SET)
!= 0)
return FALSE;
if (!b_out_squirt_out_relocs (abfd, obj_textsec (abfd)))
return FALSE;
if (bfd_seek (abfd, (file_ptr) (N_DROFF (*exec_hdr (abfd))), SEEK_SET)
!= 0)
return FALSE;
if (!b_out_squirt_out_relocs (abfd, obj_datasec (abfd)))
return FALSE;
}
return TRUE;
}
#define CALLS 0x66003800
#define BAL 0x0b000000
#define BAL_MASK 0x00ffffff
#define BALX 0x85f00000
#define BALX_MASK 0x0007ffff
#define CALL 0x09000000
#define PCREL13_MASK 0x1fff
#define output_addr(sec) ((sec)->output_offset+(sec)->output_section->vma)
static bfd_vma
get_value (arelent *reloc,
struct bfd_link_info *link_info,
asection *input_section)
{
bfd_vma value;
asymbol *symbol = *(reloc->sym_ptr_ptr);
if (bfd_is_und_section (symbol->section))
{
struct bfd_link_hash_entry *h;
h = bfd_wrapped_link_hash_lookup (input_section->owner, link_info,
bfd_asymbol_name (symbol),
FALSE, FALSE, TRUE);
if (h != (struct bfd_link_hash_entry *) NULL
&& (h->type == bfd_link_hash_defined
|| h->type == bfd_link_hash_defweak))
value = h->u.def.value + output_addr (h->u.def.section);
else if (h != (struct bfd_link_hash_entry *) NULL
&& h->type == bfd_link_hash_common)
value = h->u.c.size;
else
{
if (! ((*link_info->callbacks->undefined_symbol)
(link_info, bfd_asymbol_name (symbol),
input_section->owner, input_section, reloc->address,
TRUE)))
abort ();
value = 0;
}
}
else
value = symbol->value + output_addr (symbol->section);
value += reloc->addend;
return value;
}
static bfd_reloc_status_type
calljx_callback (bfd *abfd,
struct bfd_link_info *link_info,
arelent *reloc_entry,
void * src,
void * dst,
asection *input_section)
{
int word = bfd_get_32 (abfd, src);
asymbol *symbol_in = *(reloc_entry->sym_ptr_ptr);
aout_symbol_type *symbol = aout_symbol (symbol_in);
bfd_vma value;
value = get_value (reloc_entry, link_info, input_section);
if (IS_CALLNAME (symbol->other))
{
aout_symbol_type *balsym = symbol+1;
int inst = bfd_get_32 (abfd, (bfd_byte *) src-4);
BFD_ASSERT (IS_BALNAME (balsym->other));
inst &= BALX_MASK;
inst |= BALX;
bfd_put_32 (abfd, (bfd_vma) inst, (bfd_byte *) dst-4);
symbol = balsym;
value = (symbol->symbol.value
+ output_addr (symbol->symbol.section));
}
word += value + reloc_entry->addend;
bfd_put_32 (abfd, (bfd_vma) word, dst);
return bfd_reloc_ok;
}
static bfd_reloc_status_type
callj_callback (bfd *abfd,
struct bfd_link_info *link_info,
arelent *reloc_entry,
void * data,
unsigned int srcidx,
unsigned int dstidx,
asection *input_section,
bfd_boolean shrinking)
{
int word = bfd_get_32 (abfd, (bfd_byte *) data + srcidx);
asymbol *symbol_in = *(reloc_entry->sym_ptr_ptr);
aout_symbol_type *symbol = aout_symbol (symbol_in);
bfd_vma value;
value = get_value (reloc_entry, link_info, input_section);
if (IS_OTHER (symbol->other))
word = CALLS | (symbol->other - 1);
else if (IS_CALLNAME (symbol->other))
{
aout_symbol_type *balsym = symbol+1;
BFD_ASSERT (IS_BALNAME (balsym->other));
word = BAL | ((word
+ output_addr (balsym->symbol.section)
+ balsym->symbol.value + reloc_entry->addend
- dstidx
- output_addr (input_section))
& BAL_MASK);
}
else if ((symbol->symbol.flags & BSF_SECTION_SYM) != 0)
{
BFD_ASSERT (! shrinking);
BFD_ASSERT (symbol->symbol.section == input_section);
}
else
word = CALL | (((word & BAL_MASK)
+ value
+ reloc_entry->addend
- (shrinking ? dstidx : 0)
- output_addr (input_section))
& BAL_MASK);
bfd_put_32 (abfd, (bfd_vma) word, (bfd_byte *) data + dstidx);
return bfd_reloc_ok;
}
static reloc_howto_type *
b_out_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code)
{
switch (code)
{
default:
return 0;
case BFD_RELOC_I960_CALLJ:
return &howto_reloc_callj;
case BFD_RELOC_32:
case BFD_RELOC_CTOR:
return &howto_reloc_abs32;
case BFD_RELOC_24_PCREL:
return &howto_reloc_pcrel24;
}
}
static bfd_boolean
b_out_slurp_reloc_table (bfd *abfd, sec_ptr asect, asymbol **symbols)
{
struct relocation_info *rptr;
unsigned int counter;
arelent *cache_ptr;
int extern_mask, pcrel_mask, callj_mask, length_shift;
int incode_mask;
int size_mask;
bfd_vma prev_addr = 0;
unsigned int count;
bfd_size_type reloc_size, amt;
struct relocation_info *relocs;
arelent *reloc_cache;
if (asect->relocation)
return TRUE;
if (!aout_32_slurp_symbol_table (abfd))
return FALSE;
if (asect == obj_datasec (abfd))
reloc_size = exec_hdr (abfd)->a_drsize;
else if (asect == obj_textsec (abfd))
reloc_size = exec_hdr (abfd)->a_trsize;
else if (asect == obj_bsssec (abfd))
reloc_size = 0;
else
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
return FALSE;
count = reloc_size / sizeof (struct relocation_info);
relocs = bfd_malloc (reloc_size);
if (!relocs && reloc_size != 0)
return FALSE;
amt = ((bfd_size_type) count + 1) * sizeof (arelent);
reloc_cache = bfd_malloc (amt);
if (!reloc_cache)
{
if (relocs != NULL)
free (relocs);
return FALSE;
}
if (bfd_bread ((void *) relocs, reloc_size, abfd) != reloc_size)
{
free (reloc_cache);
if (relocs != NULL)
free (relocs);
return FALSE;
}
if (bfd_header_big_endian (abfd))
{
pcrel_mask = 0x80;
extern_mask = 0x10;
incode_mask = 0x08;
callj_mask = 0x02;
size_mask = 0x20;
length_shift = 5;
}
else
{
pcrel_mask = 0x01;
extern_mask = 0x08;
incode_mask = 0x10;
callj_mask = 0x40;
size_mask = 0x02;
length_shift = 1;
}
for (rptr = relocs, cache_ptr = reloc_cache, counter = 0;
counter < count;
counter++, rptr++, cache_ptr++)
{
unsigned char *raw = (unsigned char *)rptr;
unsigned int symnum;
cache_ptr->address = H_GET_32 (abfd, raw + 0);
cache_ptr->howto = 0;
if (bfd_header_big_endian (abfd))
symnum = (raw[4] << 16) | (raw[5] << 8) | raw[6];
else
symnum = (raw[6] << 16) | (raw[5] << 8) | raw[4];
if (raw[7] & extern_mask)
{
cache_ptr->sym_ptr_ptr = symbols + symnum;
cache_ptr->addend = 0;
}
else
{
int s;
s = symnum;
if (s & (1 << 23))
s |= (~0) << 24;
cache_ptr->sym_ptr_ptr = (asymbol **)NULL;
switch (s)
{
case N_TEXT:
case N_TEXT | N_EXT:
cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr;
cache_ptr->addend = - obj_textsec (abfd)->vma;
break;
case N_DATA:
case N_DATA | N_EXT:
cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr;
cache_ptr->addend = - obj_datasec (abfd)->vma;
break;
case N_BSS:
case N_BSS | N_EXT:
cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr;
cache_ptr->addend = - obj_bsssec (abfd)->vma;
break;
case N_ABS:
case N_ABS | N_EXT:
cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr;
cache_ptr->addend = 0;
break;
case -2:
if (raw[7] & pcrel_mask)
{
cache_ptr->howto = &howto_align_table[(raw[7] >> length_shift) & 3];
cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
}
else
{
abort ();
}
cache_ptr->addend = 0;
break;
default:
BFD_ASSERT (FALSE);
break;
}
}
if (cache_ptr->howto != 0)
;
else if (raw[7] & callj_mask)
{
cache_ptr->howto = &howto_reloc_callj;
}
else if ( raw[7] & pcrel_mask)
{
if (raw[7] & size_mask)
cache_ptr->howto = &howto_reloc_pcrel13;
else
cache_ptr->howto = &howto_reloc_pcrel24;
}
else
{
if (raw[7] & incode_mask)
cache_ptr->howto = &howto_reloc_abs32code;
else
cache_ptr->howto = &howto_reloc_abs32;
}
if (cache_ptr->address < prev_addr)
{
arelent tmp;
arelent *cursor = cache_ptr-1;
bfd_vma stop = cache_ptr->address;
tmp = *cache_ptr;
while (cursor->address > stop && cursor >= reloc_cache)
{
cursor[1] = cursor[0];
cursor--;
}
cursor[1] = tmp;
}
else
prev_addr = cache_ptr->address;
}
if (relocs != NULL)
free (relocs);
asect->relocation = reloc_cache;
asect->reloc_count = count;
return TRUE;
}
static long
b_out_canonicalize_reloc (bfd *abfd,
sec_ptr section,
arelent **relptr,
asymbol **symbols)
{
arelent *tblptr;
unsigned int count;
if ((section->flags & SEC_CONSTRUCTOR) != 0)
{
arelent_chain *chain = section->constructor_chain;
for (count = 0; count < section->reloc_count; count++)
{
*relptr++ = &chain->relent;
chain = chain->next;
}
}
else
{
if (section->relocation == NULL
&& ! b_out_slurp_reloc_table (abfd, section, symbols))
return -1;
tblptr = section->relocation;
for (count = 0; count++ < section->reloc_count;)
*relptr++ = tblptr++;
}
*relptr = NULL;
return section->reloc_count;
}
static long
b_out_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
{
if (bfd_get_format (abfd) != bfd_object)
{
bfd_set_error (bfd_error_invalid_operation);
return -1;
}
if (asect->flags & SEC_CONSTRUCTOR)
return sizeof (arelent *) * (asect->reloc_count + 1);
if (asect == obj_datasec (abfd))
return (sizeof (arelent *) *
((exec_hdr (abfd)->a_drsize / sizeof (struct relocation_info))
+ 1));
if (asect == obj_textsec (abfd))
return (sizeof (arelent *) *
((exec_hdr (abfd)->a_trsize / sizeof (struct relocation_info))
+ 1));
if (asect == obj_bsssec (abfd))
return 0;
bfd_set_error (bfd_error_invalid_operation);
return -1;
}
static bfd_boolean
b_out_set_section_contents (bfd *abfd,
asection *section,
const void * location,
file_ptr offset,
bfd_size_type count)
{
if (! abfd->output_has_begun)
{
if (! aout_32_make_sections (abfd))
return FALSE;
obj_textsec (abfd)->filepos = sizeof (struct external_exec);
obj_datasec (abfd)->filepos = obj_textsec (abfd)->filepos
+ obj_textsec (abfd)->size;
}
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
return FALSE;
if (count == 0)
return TRUE;
return bfd_bwrite ((void *) location, count, abfd) == count;
}
static bfd_boolean
b_out_set_arch_mach (bfd *abfd,
enum bfd_architecture arch,
unsigned long machine)
{
bfd_default_set_arch_mach (abfd, arch, machine);
if (arch == bfd_arch_unknown)
return TRUE;
if (arch == bfd_arch_i960)
switch (machine)
{
case bfd_mach_i960_core:
case bfd_mach_i960_kb_sb:
case bfd_mach_i960_mc:
case bfd_mach_i960_xa:
case bfd_mach_i960_ca:
case bfd_mach_i960_ka_sa:
case bfd_mach_i960_jx:
case bfd_mach_i960_hx:
case 0:
return TRUE;
default:
return FALSE;
}
return FALSE;
}
static int
b_out_sizeof_headers (bfd *ignore_abfd ATTRIBUTE_UNUSED, bfd_boolean ignore ATTRIBUTE_UNUSED)
{
return sizeof (struct external_exec);
}
static void
perform_slip (bfd *abfd,
unsigned int slip,
asection *input_section,
bfd_vma value)
{
asymbol **s;
s = _bfd_generic_link_get_symbols (abfd);
BFD_ASSERT (s != (asymbol **) NULL);
while (*s)
{
asymbol *p = *s;
if (p->section == input_section)
{
if (p->value > value)
{
p->value -=slip;
if (p->udata.p != NULL)
{
struct generic_link_hash_entry *h;
h = (struct generic_link_hash_entry *) p->udata.p;
BFD_ASSERT (h->root.type == bfd_link_hash_defined);
h->root.u.def.value -= slip;
BFD_ASSERT (h->root.u.def.value == p->value);
}
}
}
s++;
}
}
static int
abs32code (bfd *abfd,
asection *input_section,
arelent *r,
unsigned int shrink,
struct bfd_link_info *link_info)
{
bfd_vma value = get_value (r, link_info, input_section);
bfd_vma dot = output_addr (input_section) + r->address;
bfd_vma gap;
gap = value - (dot - shrink);
if (-1 << 23 < (long)gap && (long)gap < 1 << 23)
{
r->howto = &howto_reloc_abs32codeshrunk;
r->address -=4;
shrink += 4 ;
perform_slip (abfd, 4, input_section, r->address-shrink + 4);
}
return shrink;
}
static int
aligncode (bfd *abfd,
asection *input_section,
arelent *r,
unsigned int shrink)
{
bfd_vma dot = output_addr (input_section) + r->address;
bfd_vma gap;
bfd_vma old_end;
bfd_vma new_end;
unsigned int shrink_delta;
int size = r->howto->size;
old_end = ((dot + size ) & ~size) + size+1;
new_end = ((dot - shrink + size) & ~size);
gap = old_end - ((dot + size) & ~size);
shrink_delta = (old_end - new_end) - shrink;
if (shrink_delta)
{
r->howto = howto_done_align_table + (r->howto - howto_align_table);
r->addend = old_end - dot + r->address;
perform_slip (abfd, shrink_delta, input_section, r->address - shrink);
shrink += shrink_delta;
}
return shrink;
}
static bfd_boolean
b_out_bfd_relax_section (bfd *abfd,
asection *i,
struct bfd_link_info *link_info,
bfd_boolean *again)
{
bfd *input_bfd = i->owner;
asection *input_section = i;
unsigned int shrink = 0 ;
arelent **reloc_vector = NULL;
long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
if (reloc_size < 0)
return FALSE;
*again = FALSE;
if (reloc_size)
{
long reloc_count;
reloc_vector = bfd_malloc ((bfd_size_type) reloc_size);
if (reloc_vector == NULL && reloc_size != 0)
goto error_return;
reloc_count =
bfd_canonicalize_reloc (input_bfd, input_section, reloc_vector,
_bfd_generic_link_get_symbols (input_bfd));
if (reloc_count < 0)
goto error_return;
if (reloc_count > 0)
{
arelent **parent;
for (parent = reloc_vector; *parent; parent++)
{
arelent *r = *parent;
switch (r->howto->type)
{
case ALIGNER:
shrink = aligncode (abfd, input_section, r, shrink);
break;
case ABS32CODE:
shrink = abs32code (input_bfd, input_section, r, shrink,
link_info);
break;
case ABS32CODE_SHRUNK:
shrink += 4;
break;
}
}
}
}
input_section->size -= shrink;
if (reloc_vector != NULL)
free (reloc_vector);
return TRUE;
error_return:
if (reloc_vector != NULL)
free (reloc_vector);
return FALSE;
}
static bfd_byte *
b_out_bfd_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)
{
bfd *input_bfd = link_order->u.indirect.section->owner;
asection *input_section = link_order->u.indirect.section;
long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
arelent **reloc_vector = NULL;
long reloc_count;
if (reloc_size < 0)
goto error_return;
if (relocatable)
return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
link_order,
data, relocatable,
symbols);
reloc_vector = bfd_malloc ((bfd_size_type) reloc_size);
if (reloc_vector == NULL && reloc_size != 0)
goto error_return;
BFD_ASSERT (bfd_get_section_contents (input_bfd,
input_section,
data,
(bfd_vma) 0,
input_section->size));
reloc_count = bfd_canonicalize_reloc (input_bfd,
input_section,
reloc_vector,
symbols);
if (reloc_count < 0)
goto error_return;
if (reloc_count > 0)
{
arelent **parent = reloc_vector;
arelent *reloc ;
unsigned int dst_address = 0;
unsigned int src_address = 0;
unsigned int run;
unsigned int idx;
while (dst_address < link_order->size)
{
reloc = *parent;
if (reloc)
{
BFD_ASSERT (reloc->address >= src_address);
run = reloc->address - src_address;
parent++;
}
else
run = link_order->size - dst_address;
for (idx = 0; idx < run; idx++)
data[dst_address++] = data[src_address++];
if (reloc)
{
switch (reloc->howto->type)
{
case ABS32CODE:
calljx_callback (input_bfd, link_info, reloc,
src_address + data, dst_address + data,
input_section);
src_address += 4;
dst_address += 4;
break;
case ABS32:
bfd_put_32 (input_bfd,
(bfd_get_32 (input_bfd, data + src_address)
+ get_value (reloc, link_info, input_section)),
data + dst_address);
src_address += 4;
dst_address += 4;
break;
case CALLJ:
callj_callback (input_bfd, link_info, reloc, data,
src_address, dst_address, input_section,
FALSE);
src_address += 4;
dst_address += 4;
break;
case ALIGNDONE:
BFD_ASSERT (reloc->addend >= src_address);
BFD_ASSERT ((bfd_vma) reloc->addend
<= input_section->size);
src_address = reloc->addend;
dst_address = ((dst_address + reloc->howto->size)
& ~reloc->howto->size);
break;
case ABS32CODE_SHRUNK:
callj_callback (input_bfd, link_info, reloc, data,
src_address + 4, dst_address, input_section,
TRUE);
dst_address += 4;
src_address += 8;
break;
case PCREL24:
{
long int word = bfd_get_32 (input_bfd,
data + src_address);
bfd_vma value;
value = get_value (reloc, link_info, input_section);
word = ((word & ~BAL_MASK)
| (((word & BAL_MASK)
+ value
- output_addr (input_section)
+ reloc->addend)
& BAL_MASK));
bfd_put_32 (input_bfd, (bfd_vma) word, data + dst_address);
dst_address += 4;
src_address += 4;
}
break;
case PCREL13:
{
long int word = bfd_get_32 (input_bfd,
data + src_address);
bfd_vma value;
value = get_value (reloc, link_info, input_section);
word = ((word & ~PCREL13_MASK)
| (((word & PCREL13_MASK)
+ value
+ reloc->addend
- output_addr (input_section))
& PCREL13_MASK));
bfd_put_32 (input_bfd, (bfd_vma) word, data + dst_address);
dst_address += 4;
src_address += 4;
}
break;
default:
abort ();
}
}
}
}
if (reloc_vector != NULL)
free (reloc_vector);
return data;
error_return:
if (reloc_vector != NULL)
free (reloc_vector);
return NULL;
}
#define aout_32_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
#define aout_32_close_and_cleanup aout_32_bfd_free_cached_info
#define b_out_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
#define b_out_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
#define b_out_bfd_link_add_symbols _bfd_generic_link_add_symbols
#define b_out_bfd_link_just_syms _bfd_generic_link_just_syms
#define b_out_bfd_final_link _bfd_generic_final_link
#define b_out_bfd_link_split_section _bfd_generic_link_split_section
#define b_out_bfd_gc_sections bfd_generic_gc_sections
#define b_out_bfd_merge_sections bfd_generic_merge_sections
#define b_out_bfd_is_group_section bfd_generic_is_group_section
#define b_out_bfd_discard_group bfd_generic_discard_group
#define b_out_section_already_linked _bfd_generic_section_already_linked
#define aout_32_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
#define aout_32_get_section_contents_in_window_with_mode \
_bfd_generic_get_section_contents_in_window_with_mode
extern const bfd_target b_out_vec_little_host;
const bfd_target b_out_vec_big_host =
{
"b.out.big",
bfd_target_aout_flavour,
BFD_ENDIAN_LITTLE,
BFD_ENDIAN_BIG,
(HAS_RELOC | EXEC_P |
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
'_',
' ',
16,
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
bfd_getb16, bfd_getb_signed_16, bfd_putb16,
{_bfd_dummy_target, b_out_object_p,
bfd_generic_archive_p, _bfd_dummy_target},
{bfd_false, b_out_mkobject,
_bfd_generic_mkarchive, bfd_false},
{bfd_false, b_out_write_object_contents,
_bfd_write_archive_contents, bfd_false},
BFD_JUMP_TABLE_GENERIC (aout_32),
BFD_JUMP_TABLE_COPY (_bfd_generic),
BFD_JUMP_TABLE_CORE (_bfd_nocore),
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
BFD_JUMP_TABLE_SYMBOLS (aout_32),
BFD_JUMP_TABLE_RELOCS (b_out),
BFD_JUMP_TABLE_WRITE (b_out),
BFD_JUMP_TABLE_LINK (b_out),
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
& b_out_vec_little_host,
NULL
};
const bfd_target b_out_vec_little_host =
{
"b.out.little",
bfd_target_aout_flavour,
BFD_ENDIAN_LITTLE,
BFD_ENDIAN_LITTLE,
(HAS_RELOC | EXEC_P |
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
'_',
' ',
16,
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
bfd_getl16, bfd_getl_signed_16, bfd_putl16,
{_bfd_dummy_target, b_out_object_p,
bfd_generic_archive_p, _bfd_dummy_target},
{bfd_false, b_out_mkobject,
_bfd_generic_mkarchive, bfd_false},
{bfd_false, b_out_write_object_contents,
_bfd_write_archive_contents, bfd_false},
BFD_JUMP_TABLE_GENERIC (aout_32),
BFD_JUMP_TABLE_COPY (_bfd_generic),
BFD_JUMP_TABLE_CORE (_bfd_nocore),
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd),
BFD_JUMP_TABLE_SYMBOLS (aout_32),
BFD_JUMP_TABLE_RELOCS (b_out),
BFD_JUMP_TABLE_WRITE (b_out),
BFD_JUMP_TABLE_LINK (b_out),
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
& b_out_vec_big_host,
NULL
};