#define SHLIBLEN 60
#define MF_IMPURE 00200
#define MF_SQUEEZED 01000
#define MF_USES_SL 02000
#define MF_IS_SL 04000
#define IMAGIC (MF_IMPURE | ZMAGIC)
#define SPOMAGIC (MF_USES_SL | OMAGIC)
#define SLOMAGIC (MF_IS_SL | OMAGIC)
#define QMAGIC (MF_SQUEEZED | ZMAGIC)
#define SPZMAGIC (MF_USES_SL | ZMAGIC)
#define SPQMAGIC (MF_USES_SL | QMAGIC)
#define SLZMAGIC (MF_IS_SL | ZMAGIC)
#define SLPZMAGIC (MF_USES_SL | SLZMAGIC)
#define N_SHARED_LIB(x) ((x).a_info & MF_USES_SL)
#define N_TXTOFF(x) \
((x).a_info == OMAGIC \
? 32 \
: (N_MAGIC(x) == ZMAGIC \
? TARGET_PAGE_SIZE \
: 999))
#define N_TXTADDR(x) \
(N_MAGIC(x) != ZMAGIC \
? (bfd_vma) 0 \
\
: (N_SHARED_LIB(x) \
? ((x).a_entry & ~(bfd_vma) (TARGET_PAGE_SIZE - 1)) \
: (bfd_vma) TEXT_START_ADDR))
#define N_SYMOFF(x) \
(N_TXTOFF (x) + (x).a_text + (x).a_data + (x).a_trsize + (x).a_drsize)
#define N_STROFF(x) (N_SYMOFF (x) + (x).a_syms)
#define TEXT_START_ADDR 32768
#define TARGET_PAGE_SIZE 32768
#define SEGMENT_SIZE TARGET_PAGE_SIZE
#define DEFAULT_ARCH bfd_arch_arm
#define MY(OP) CONCAT2 (riscix_,OP)
#define TARGETNAME "a.out-riscix"
#define N_BADMAG(x) ((((x).a_info & ~007200) != ZMAGIC) \
&& (((x).a_info & ~006000) != OMAGIC) \
&& ((x).a_info != NMAGIC))
#define N_MAGIC(x) ((x).a_info & ~07200)
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#define WRITE_HEADERS(abfd, execp) \
{ \
bfd_size_type text_size; \
file_ptr text_end; \
\
if (adata (abfd).magic == undecided_magic) \
NAME (aout, adjust_sizes_and_vmas) (abfd, & text_size, & text_end); \
\
execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
execp->a_entry = bfd_get_start_address (abfd); \
\
execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
obj_reloc_entry_size (abfd)); \
execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
obj_reloc_entry_size (abfd)); \
NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); \
\
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \
|| bfd_bwrite ((void *) & exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \
abfd) != EXEC_BYTES_SIZE) \
return FALSE; \
\
\
if (bfd_get_outsymbols (abfd) != NULL \
&& bfd_get_symcount (abfd) != 0) \
{ \
if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (* execp)), SEEK_SET) != 0)\
return FALSE; \
\
if (! NAME (aout, write_syms) (abfd)) \
return FALSE; \
\
if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (* execp)), SEEK_SET) != 0)\
return FALSE; \
\
if (! riscix_squirt_out_relocs (abfd, obj_textsec (abfd))) \
return FALSE; \
if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (* execp)), SEEK_SET) != 0)\
return FALSE; \
\
if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) \
return FALSE; \
} \
}
#include "libaout.h"
#include "aout/aout64.h"
static bfd_reloc_status_type
riscix_fix_pcrel_26_done (bfd *abfd ATTRIBUTE_UNUSED,
arelent *reloc_entry ATTRIBUTE_UNUSED,
asymbol *symbol ATTRIBUTE_UNUSED,
void * data ATTRIBUTE_UNUSED,
asection *input_section ATTRIBUTE_UNUSED,
bfd *output_bfd ATTRIBUTE_UNUSED,
char **error_message ATTRIBUTE_UNUSED)
{
return bfd_reloc_ok;
}
static bfd_reloc_status_type riscix_fix_pcrel_26 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static const bfd_target *riscix_callback (bfd *);
static reloc_howto_type riscix_std_reloc_howto[] =
{
HOWTO( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE),
HOWTO( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
HOWTO( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE),
HOWTO( 3, 2, 3, 26, TRUE, 0, complain_overflow_signed, riscix_fix_pcrel_26 , "ARM26", TRUE, 0x00ffffff,0x00ffffff, FALSE),
HOWTO( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, TRUE),
HOWTO( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, TRUE),
HOWTO( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, TRUE),
HOWTO( 7, 2, 3, 26, FALSE, 0, complain_overflow_signed, riscix_fix_pcrel_26_done, "ARM26D",TRUE,0x00ffffff,0x00ffffff, FALSE),
EMPTY_HOWTO (-1),
HOWTO( 9, 0, -1, 16, FALSE, 0, complain_overflow_bitfield,0,"NEG16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
HOWTO( 10, 0, -2, 32, FALSE, 0, complain_overflow_bitfield,0,"NEG32", TRUE, 0xffffffff,0xffffffff, FALSE)
};
#define RISCIX_TABLE_SIZE \
(sizeof (riscix_std_reloc_howto) / sizeof (reloc_howto_type))
static bfd_reloc_status_type
riscix_fix_pcrel_26 (bfd *abfd,
arelent *reloc_entry,
asymbol *symbol,
void * data,
asection *input_section,
bfd *output_bfd,
char **error_message ATTRIBUTE_UNUSED)
{
bfd_vma relocation;
bfd_size_type addr = reloc_entry->address;
long target = bfd_get_32 (abfd, (bfd_byte *) data + addr);
bfd_reloc_status_type flag = bfd_reloc_ok;
if (symbol->section == &bfd_und_section
&& (symbol->flags & BSF_WEAK) == 0)
return output_bfd ? bfd_reloc_continue : bfd_reloc_undefined;
if (symbol->section->name != input_section->name
&& output_bfd != NULL)
return bfd_reloc_continue;
relocation = (target & 0x00ffffff) << 2;
relocation = (relocation ^ 0x02000000) - 0x02000000;
relocation += symbol->value;
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
relocation += reloc_entry->addend;
relocation -= input_section->output_section->vma;
relocation -= input_section->output_offset;
relocation -= addr;
if (relocation & 3)
return bfd_reloc_overflow;
if (relocation & 0x02000000)
{
if ((relocation & ~ (bfd_vma) 0x03ffffff) != ~ (bfd_vma) 0x03ffffff)
flag = bfd_reloc_overflow;
}
else if (relocation & ~ (bfd_vma) 0x03ffffff)
flag = bfd_reloc_overflow;
target &= ~0x00ffffff;
target |= (relocation >> 2) & 0x00ffffff;
bfd_put_32 (abfd, (bfd_vma) target, (bfd_byte *) data + addr);
reloc_entry->howto = &riscix_std_reloc_howto[7];
return flag;
}
static reloc_howto_type *
riscix_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
{
#define ASTD(i,j) case i: return &riscix_std_reloc_howto[j]
if (code == BFD_RELOC_CTOR)
switch (bfd_get_arch_info (abfd)->bits_per_address)
{
case 32:
code = BFD_RELOC_32;
break;
default:
return NULL;
}
switch (code)
{
ASTD (BFD_RELOC_16, 1);
ASTD (BFD_RELOC_32, 2);
ASTD (BFD_RELOC_ARM_PCREL_BRANCH, 3);
ASTD (BFD_RELOC_8_PCREL, 4);
ASTD (BFD_RELOC_16_PCREL, 5);
ASTD (BFD_RELOC_32_PCREL, 6);
default:
return NULL;
}
}
#define MY_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
#define MY_bfd_link_add_symbols _bfd_generic_link_add_symbols
#define MY_final_link_callback should_not_be_used
#define MY_bfd_final_link _bfd_generic_final_link
#define MY_bfd_reloc_type_lookup riscix_reloc_type_lookup
#define MY_canonicalize_reloc riscix_canonicalize_reloc
#define MY_object_p riscix_object_p
static void
riscix_swap_std_reloc_out (bfd *abfd,
arelent *g,
struct reloc_std_external *natptr)
{
int r_index;
asymbol *sym = *(g->sym_ptr_ptr);
int r_extern;
int r_length;
int r_pcrel;
int r_neg = 0;
asection *output_section = sym->section->output_section;
PUT_WORD(abfd, g->address, natptr->r_address);
r_length = g->howto->size ;
if (r_length < 0)
{
r_length = -r_length;
r_neg = 1;
}
r_pcrel = (int) g->howto->pc_relative;
if (r_length == 3)
r_pcrel = r_pcrel ? 0 : 1;
if (bfd_is_com_section (output_section)
|| output_section == & bfd_abs_section
|| output_section == & bfd_und_section)
{
if (bfd_abs_section.symbol == sym)
{
r_index = 0;
r_extern = 0;
}
else
{
r_extern = 1;
r_index = (*g->sym_ptr_ptr)->udata.i;
}
}
else
{
r_extern = 0;
r_index = output_section->target_index;
}
if (bfd_header_big_endian (abfd))
{
natptr->r_index[0] = r_index >> 16;
natptr->r_index[1] = r_index >> 8;
natptr->r_index[2] = r_index;
natptr->r_type[0] =
( (r_extern ? RELOC_STD_BITS_EXTERN_BIG: 0)
| (r_pcrel ? RELOC_STD_BITS_PCREL_BIG: 0)
| (r_neg ? RELOC_STD_BITS_BASEREL_BIG: 0)
| (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
}
else
{
natptr->r_index[2] = r_index >> 16;
natptr->r_index[1] = r_index >> 8;
natptr->r_index[0] = r_index;
natptr->r_type[0] =
( (r_extern ? RELOC_STD_BITS_EXTERN_LITTLE: 0)
| (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE: 0)
| (r_neg ? RELOC_STD_BITS_BASEREL_LITTLE: 0)
| (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
}
}
static bfd_boolean
riscix_squirt_out_relocs (bfd *abfd, asection *section)
{
arelent **generic;
unsigned char *native, *natptr;
size_t each_size;
unsigned int count = section->reloc_count;
bfd_size_type natsize;
if (count == 0)
return TRUE;
each_size = obj_reloc_entry_size (abfd);
natsize = each_size;
natsize *= count;
native = bfd_zalloc (abfd, natsize);
if (!native)
return FALSE;
generic = section->orelocation;
for (natptr = native;
count != 0;
--count, natptr += each_size, ++generic)
riscix_swap_std_reloc_out (abfd, *generic,
(struct reloc_std_external *) natptr);
if (bfd_bwrite ((void *) native, natsize, abfd) != natsize)
{
bfd_release (abfd, native);
return FALSE;
}
bfd_release (abfd, native);
return TRUE;
}
static long
MY (canonicalize_reloc) (bfd *abfd,
sec_ptr section,
arelent **relptr,
asymbol **symbols)
{
arelent *tblptr = section->relocation;
unsigned int count, c;
extern reloc_howto_type NAME (aout, std_howto_table)[];
if (section->flags & SEC_CONSTRUCTOR)
{
arelent_chain *chain = section->constructor_chain;
for (count = 0; count < section->reloc_count; count++)
{
*relptr++ = &chain->relent;
chain = chain->next;
}
*relptr = 0;
return section->reloc_count;
}
if (tblptr && section->reloc_count)
{
for (count = 0; count++ < section->reloc_count;)
*relptr++ = tblptr++;
*relptr = 0;
return section->reloc_count;
}
if (!NAME (aout, slurp_reloc_table) (abfd, section, symbols))
return -1;
tblptr = section->relocation;
for (count = 0; count++ < section->reloc_count;)
{
c = tblptr->howto - NAME(aout,std_howto_table);
BFD_ASSERT (c < RISCIX_TABLE_SIZE);
tblptr->howto = &riscix_std_reloc_howto[c];
*relptr++ = tblptr++;
}
*relptr = 0;
return section->reloc_count;
}
static const bfd_target *
riscix_some_aout_object_p (bfd *abfd,
struct internal_exec *execp,
const bfd_target *(*callback_to_real_object_p) (bfd *))
{
struct aout_data_struct *rawptr, *oldrawptr;
const bfd_target *result;
bfd_size_type amt = sizeof (struct aout_data_struct);
rawptr = bfd_zalloc (abfd, amt);
if (rawptr == NULL)
return NULL;
oldrawptr = abfd->tdata.aout_data;
abfd->tdata.aout_data = rawptr;
if (oldrawptr != NULL)
*abfd->tdata.aout_data = *oldrawptr;
abfd->tdata.aout_data->a.hdr = &rawptr->e;
*(abfd->tdata.aout_data->a.hdr) = *execp;
execp = abfd->tdata.aout_data->a.hdr;
abfd->flags = BFD_NO_FLAGS;
if (execp->a_drsize || execp->a_trsize)
abfd->flags |= HAS_RELOC;
if (execp->a_syms)
abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
if (N_DYNAMIC(*execp))
abfd->flags |= DYNAMIC;
if ((execp->a_info & MF_SQUEEZED) != 0)
{
bfd_set_error (bfd_error_wrong_format);
return NULL;
}
else if ((execp->a_info & MF_IS_SL) != 0)
{
bfd_set_error (bfd_error_wrong_format);
return NULL;
}
else if (N_MAGIC (*execp) == ZMAGIC)
{
abfd->flags |= D_PAGED | WP_TEXT;
adata (abfd).magic = z_magic;
}
else if (N_MAGIC (*execp) == NMAGIC)
{
abfd->flags |= WP_TEXT;
adata (abfd).magic = n_magic;
}
else if (N_MAGIC (*execp) == OMAGIC)
adata (abfd).magic = o_magic;
else
abort ();
bfd_get_start_address (abfd) = execp->a_entry;
obj_aout_symbols (abfd) = NULL;
bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
obj_aout_external_syms (abfd) = NULL;
obj_aout_external_strings (abfd) = NULL;
obj_aout_sym_hashes (abfd) = NULL;
if (! NAME (aout, make_sections) (abfd))
return NULL;
obj_datasec (abfd)->size = execp->a_data;
obj_bsssec (abfd)->size = execp->a_bss;
obj_textsec (abfd)->flags =
(execp->a_trsize != 0
? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
: (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
obj_datasec (abfd)->flags =
(execp->a_drsize != 0
? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
: (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
obj_bsssec (abfd)->flags = SEC_ALLOC;
result = (*callback_to_real_object_p) (abfd);
#if defined(MACH) || defined(STAT_FOR_EXEC)
{
struct stat stat_buf;
if (abfd->iostream != NULL
&& (abfd->flags & BFD_IN_MEMORY) == 0
&& (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
&& ((stat_buf.st_mode & 0111) != 0))
abfd->flags |= EXEC_P;
}
#else
if ((execp->a_entry >= obj_textsec(abfd)->vma) &&
(execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->size))
abfd->flags |= EXEC_P;
#endif
if (result == NULL)
{
free (rawptr);
abfd->tdata.aout_data = oldrawptr;
}
return result;
}
static const bfd_target *
MY (object_p) (bfd *abfd)
{
struct external_exec exec_bytes;
struct internal_exec exec;
const bfd_target *target;
if (bfd_bread ((void *) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd)
!= EXEC_BYTES_SIZE)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
return NULL;
}
exec.a_info = H_GET_32 (abfd, exec_bytes.e_info);
if (N_BADMAG (exec))
return NULL;
#ifdef MACHTYPE_OK
if (!(MACHTYPE_OK (N_MACHTYPE (exec))))
return NULL;
#endif
NAME (aout, swap_exec_header_in) (abfd, & exec_bytes, & exec);
target = riscix_some_aout_object_p (abfd, & exec, MY (callback));
return target;
}
#include "aout-target.h"