static const bfd_target *
os9k_object_p (bfd *abfd)
{
struct internal_exec anexec;
mh_com exec_bytes;
if (bfd_bread ((PTR) &exec_bytes, (bfd_size_type) MHCOM_BYTES_SIZE, abfd)
!= MHCOM_BYTES_SIZE)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
return 0;
}
anexec.a_info = H_GET_16 (abfd, exec_bytes.m_sync);
if (N_BADMAG (anexec))
{
bfd_set_error (bfd_error_wrong_format);
return 0;
}
if (! os9k_swap_exec_header_in (abfd, &exec_bytes, &anexec))
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
return NULL;
}
return aout_32_some_aout_object_p (abfd, &anexec, os9k_callback);
}
/* Swaps the information in an executable header taken from a raw byte
stream memory image, into the internal exec_header structure. */
static bfd_boolean
os9k_swap_exec_header_in (bfd *abfd,
mh_com *raw_bytes,
struct internal_exec *execp)
{
mh_com *bytes = (mh_com *) raw_bytes;
unsigned int dload, dmemsize, dmemstart;
/* Now fill in fields in the execp, from the bytes in the raw data. */
execp->a_info = H_GET_16 (abfd, bytes->m_sync);
execp->a_syms = 0;
execp->a_entry = H_GET_32 (abfd, bytes->m_exec);
execp->a_talign = 2;
execp->a_dalign = 2;
execp->a_balign = 2;
dload = H_GET_32 (abfd, bytes->m_idata);
execp->a_data = dload + 8;
if (bfd_seek (abfd, (file_ptr) dload, SEEK_SET) != 0
|| (bfd_bread (&dmemstart, (bfd_size_type) sizeof (dmemstart), abfd)
!= sizeof (dmemstart))
|| (bfd_bread (&dmemsize, (bfd_size_type) sizeof (dmemsize), abfd)
!= sizeof (dmemsize)))
return FALSE;
execp->a_tload = 0;
execp->a_dload = H_GET_32 (abfd, (unsigned char *) &dmemstart);
execp->a_text = dload - execp->a_tload;
execp->a_data = H_GET_32 (abfd, (unsigned char *) &dmemsize);
execp->a_bss = H_GET_32 (abfd, bytes->m_data) - execp->a_data;
execp->a_trsize = 0;
execp->a_drsize = 0;
return TRUE;
}
static bfd_boolean
oasys_slurp_symbol_table (bfd *const abfd)
{
oasys_record_union_type record;
oasys_data_type *data = OASYS_DATA (abfd);
bfd_boolean loop = TRUE;
asymbol *dest_defined;
asymbol *dest;
char *string_ptr;
bfd_size_type amt;
if (data->symbols != NULL)
return TRUE;
/* Buy enough memory for all the symbols and all the names. */
amt = abfd->symcount;
amt *= sizeof (asymbol);
data->symbols = bfd_alloc (abfd, amt);
amt = data->symbol_string_length;
#ifdef UNDERSCORE_HACK
/* Buy 1 more char for each symbol to keep the underscore in. */
amt += abfd->symcount;
#endif
data->strings = bfd_alloc (abfd, amt);
if (!data->symbols || !data->strings)
return FALSE;
dest_defined = data->symbols + abfd->symcount - 1;
string_ptr = data->strings;
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
return FALSE;
while (loop)
{
if (! oasys_read_record (abfd, &record))
return FALSE;
switch (record.header.type)
{
case oasys_record_is_header_enum:
break;
case oasys_record_is_local_enum:
case oasys_record_is_symbol_enum:
{
int flag = record.header.type == (int) oasys_record_is_local_enum ?
(BSF_LOCAL) : (BSF_GLOBAL | BSF_EXPORT);
size_t length = oasys_string_length (&record);
switch (record.symbol.relb & RELOCATION_TYPE_BITS)
{
case RELOCATION_TYPE_ABS:
dest = dest_defined--;
dest->section = bfd_abs_section_ptr;
dest->flags = 0;
break;
case RELOCATION_TYPE_REL:
dest = dest_defined--;
dest->section =
OASYS_DATA (abfd)->sections[record.symbol.relb &
RELOCATION_SECT_BITS];
if (record.header.type == (int) oasys_record_is_local_enum)
{
dest->flags = BSF_LOCAL;
if (dest->section == (asection *) (~0))
{
/* It seems that sometimes internal symbols are tied up, but
still get output, even though there is no
section */
dest->section = 0;
}
}
else
dest->flags = flag;
break;
case RELOCATION_TYPE_UND:
dest = data->symbols + H_GET_16 (abfd, record.symbol.refno);
dest->section = bfd_und_section_ptr;
break;
case RELOCATION_TYPE_COM:
dest = dest_defined--;
dest->name = string_ptr;
dest->the_bfd = abfd;
dest->section = bfd_com_section_ptr;
break;
default:
dest = dest_defined--;
BFD_ASSERT (FALSE);
break;
}
dest->name = string_ptr;
dest->the_bfd = abfd;
dest->udata.p = NULL;
dest->value = H_GET_32 (abfd, record.symbol.value);
#ifdef UNDERSCORE_HACK
if (record.symbol.name[0] != '_')
{
string_ptr[0] = '_';
string_ptr++;
}
#endif
memcpy (string_ptr, record.symbol.name, length);
string_ptr[length] = 0;
string_ptr += length + 1;
}
break;
default:
loop = FALSE;
}
}
return TRUE;
}