mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
5f771d47c7
as appropriate. Use EMPTY_HOWTO as appropriate. Fill in structure initializations. Add casts. * reloc.c (EMPTY_HOWTO): Define. * bfd-in2.h: Rebuild. * coff-h8300.c (h8300_reloc16_extra_cases): Remove useless comparisons against 0. * elf32-sparc.c (elf32_sparc_merge_private_bfd_data): Change previous_ibfd_e_flags to unsigned long. * vms.h (struct vms_private_data_struct): Change section_count to unsigned. * vms-gsd.c (_bfd_vms_slurp_gsd): Change psect_idx to unsigned. (_bfd_vms_write_gsd): Change symnum to unsigned. * vms-hdr.c (_bfd_vms_write_hdr): Change symnum to unsigned. * vms-tir.c (etir_sta): Change psect to unsigned. (alloc_section): Change idx to unsigned. (tir_sta, tir_ctl): Change psect to unsigned. (_bfd_vms_write_tir): Change len and before to bfd_size_type. * vms.c (priv_section_count): Change to unsigned.
731 lines
22 KiB
C
731 lines
22 KiB
C
/* BFD back-end for Motorolla MCore COFF/PE
|
||
Copyright 1999 Free Software Foundation, Inc.
|
||
|
||
This file is part of BFD, the Binary File Descriptor library.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, 59 Temple Place - Suite 330,
|
||
Boston, MA 02111-1307, USA. */
|
||
|
||
#include "bfd.h"
|
||
#include "sysdep.h"
|
||
#include "libbfd.h"
|
||
#include "coff/mcore.h"
|
||
#include "coff/internal.h"
|
||
#include "coff/pe.h"
|
||
#include "libcoff.h"
|
||
|
||
#ifdef BADMAG
|
||
#undef BADMAG
|
||
#endif
|
||
#define BADMAG(x) MCOREBADMAG(x)
|
||
|
||
#ifndef NUM_ELEM
|
||
#define NUM_ELEM(A) (sizeof (A) / sizeof (A)[0])
|
||
#endif
|
||
|
||
/* This file is compiled more than once, but we only compile the
|
||
final_link routine once. */
|
||
extern boolean mcore_bfd_coff_final_link
|
||
PARAMS ((bfd *, struct bfd_link_info *));
|
||
|
||
static struct bfd_link_hash_table * coff_mcore_link_hash_table_create
|
||
PARAMS ((bfd *));
|
||
static bfd_reloc_status_type mcore_coff_unsupported_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static boolean coff_mcore_relocate_section
|
||
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
|
||
struct internal_reloc *, struct internal_syment *, asection **));
|
||
static reloc_howto_type * mcore_coff_reloc_type_lookup
|
||
PARAMS ((bfd *, bfd_reloc_code_real_type));
|
||
static reloc_howto_type * coff_mcore_rtype_to_howto
|
||
PARAMS ((bfd *, asection *, struct internal_reloc *,
|
||
struct coff_link_hash_entry *, struct internal_syment *, bfd_vma *));
|
||
static const bfd_target * pe_object_p
|
||
PARAMS ((bfd *));
|
||
|
||
|
||
|
||
/* The NT loader points the toc register to &toc + 32768, in order to
|
||
use the complete range of a 16-bit displacement. We have to adjust
|
||
for this when we fix up loads displaced off the toc reg. */
|
||
#define TOC_LOAD_ADJUSTMENT (-32768)
|
||
#define TOC_SECTION_NAME ".private.toc"
|
||
|
||
/* The main body of code is in coffcode.h. */
|
||
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
|
||
|
||
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
|
||
from smaller values. Start with zero, widen, *then* decrement. */
|
||
#define MINUS_ONE (((bfd_vma)0) - 1)
|
||
|
||
|
||
static reloc_howto_type mcore_coff_howto_table[] =
|
||
{
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_MCORE_ABSOLUTE,/* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* dont complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"ABSOLUTE", /* name */
|
||
false, /* partial_inplace */
|
||
0x00, /* src_mask */
|
||
0x00, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
HOWTO (IMAGE_REL_MCORE_ADDR32,/* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"ADDR32", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 8 bits + 2 zero bits; jmpi/jsri/lrw instructions.
|
||
Should not appear in object files. */
|
||
HOWTO (IMAGE_REL_MCORE_PCREL_IMM8BY4, /* type */
|
||
2, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
mcore_coff_unsupported_reloc, /* special_function */
|
||
"IMM8BY4", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* bsr/bt/bf/br instructions; 11 bits + 1 zero bit
|
||
Span 2k instructions == 4k bytes.
|
||
Only useful pieces at the relocated address are the opcode (5 bits) */
|
||
HOWTO (IMAGE_REL_MCORE_PCREL_IMM11BY2,/* type */
|
||
1, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
11, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"IMM11BY2", /* name */
|
||
false, /* partial_inplace */
|
||
0x0, /* src_mask */
|
||
0x7ff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* 4 bits + 1 zero bit; 'loopt' instruction only; unsupported. */
|
||
HOWTO (IMAGE_REL_MCORE_PCREL_IMM4BY2, /* type */
|
||
1, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
4, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
mcore_coff_unsupported_reloc, /* special_function */
|
||
"IMM4BY2", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* 32-bit pc-relative. Eventually this will help support PIC code. */
|
||
HOWTO (IMAGE_REL_MCORE_PCREL_32,/* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"PCREL_32", /* name */
|
||
false, /* partial_inplace */
|
||
0x0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* Like PCREL_IMM11BY2, this relocation indicates that there is a
|
||
'jsri' at the specified address. There is a separate relocation
|
||
entry for the literal pool entry that it references, but we
|
||
might be able to change the jsri to a bsr if the target turns out
|
||
to be close enough [even though we won't reclaim the literal pool
|
||
entry, we'll get some runtime efficiency back]. Note that this
|
||
is a relocation that we are allowed to safely ignore. */
|
||
HOWTO (IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2,/* type */
|
||
1, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
11, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"JSR_IMM11BY2", /* name */
|
||
false, /* partial_inplace */
|
||
0x0, /* src_mask */
|
||
0x7ff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
HOWTO (IMAGE_REL_MCORE_RVA, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"MCORE_RVA", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
true) /* pcrel_offset */
|
||
};
|
||
|
||
/* Extend the coff_link_hash_table structure with a few M*Core specific fields.
|
||
This allows us to store global data here without actually creating any
|
||
global variables, which is a no-no in the BFD world. */
|
||
typedef struct coff_mcore_link_hash_table
|
||
{
|
||
/* The original coff_link_hash_table structure. MUST be first field. */
|
||
struct coff_link_hash_table root;
|
||
|
||
bfd * bfd_of_toc_owner;
|
||
long int global_toc_size;
|
||
long int import_table_size;
|
||
long int first_thunk_address;
|
||
long int thunk_size;
|
||
}
|
||
mcore_hash_table;
|
||
|
||
/* Get the MCore coff linker hash table from a link_info structure. */
|
||
#define coff_mcore_hash_table(info) \
|
||
((mcore_hash_table *) ((info)->hash))
|
||
|
||
/* Create an MCore coff linker hash table. */
|
||
static struct bfd_link_hash_table *
|
||
coff_mcore_link_hash_table_create (abfd)
|
||
bfd * abfd;
|
||
{
|
||
mcore_hash_table * ret;
|
||
|
||
ret = ((mcore_hash_table *) bfd_alloc (abfd, sizeof (* ret)));
|
||
if (ret == (mcore_hash_table *) NULL)
|
||
return NULL;
|
||
|
||
if (! _bfd_coff_link_hash_table_init
|
||
(& ret->root, abfd, _bfd_coff_link_hash_newfunc))
|
||
{
|
||
bfd_release (abfd, ret);
|
||
return (struct bfd_link_hash_table *) NULL;
|
||
}
|
||
|
||
ret->bfd_of_toc_owner = NULL;
|
||
ret->global_toc_size = 0;
|
||
ret->import_table_size = 0;
|
||
ret->first_thunk_address = 0;
|
||
ret->thunk_size = 0;
|
||
|
||
return & ret->root.root;
|
||
}
|
||
|
||
/*ARGSUSED*/
|
||
static bfd_reloc_status_type
|
||
mcore_coff_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd * abfd;
|
||
arelent * reloc_entry;
|
||
asymbol * symbol ATTRIBUTE_UNUSED;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection * input_section ATTRIBUTE_UNUSED;
|
||
bfd * output_bfd ATTRIBUTE_UNUSED;
|
||
char ** error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
BFD_ASSERT (reloc_entry->howto != (reloc_howto_type *)0);
|
||
|
||
_bfd_error_handler (_("%s: Relocation %s (%d) is not currently supported.\n"),
|
||
bfd_get_filename (abfd),
|
||
reloc_entry->howto->name,
|
||
reloc_entry->howto->type);
|
||
|
||
return bfd_reloc_notsupported;
|
||
}
|
||
|
||
|
||
/* A cheesy little macro to make the code a little more readable. */
|
||
#define HOW2MAP(bfd_rtype, mcore_rtype) \
|
||
case bfd_rtype: return & mcore_coff_howto_table [mcore_rtype]
|
||
|
||
static reloc_howto_type *
|
||
mcore_coff_reloc_type_lookup (abfd, code)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
switch (code)
|
||
{
|
||
HOW2MAP (BFD_RELOC_32, IMAGE_REL_MCORE_ADDR32);
|
||
HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM8BY4, IMAGE_REL_MCORE_PCREL_IMM8BY4);
|
||
HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM11BY2, IMAGE_REL_MCORE_PCREL_IMM11BY2);
|
||
HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM4BY2, IMAGE_REL_MCORE_PCREL_IMM4BY2);
|
||
HOW2MAP (BFD_RELOC_32_PCREL, IMAGE_REL_MCORE_PCREL_32);
|
||
HOW2MAP (BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2, IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2);
|
||
HOW2MAP (BFD_RELOC_RVA, IMAGE_REL_MCORE_RVA);
|
||
default:
|
||
return NULL;
|
||
}
|
||
/*NOTREACHED*/
|
||
}
|
||
|
||
#undef HOW2MAP
|
||
|
||
#define RTYPE2HOWTO(cache_ptr, dst) \
|
||
(cache_ptr)->howto = mcore_coff_howto_table + (dst)->r_type;
|
||
|
||
static reloc_howto_type *
|
||
coff_mcore_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
asection * sec;
|
||
struct internal_reloc * rel;
|
||
struct coff_link_hash_entry * h ATTRIBUTE_UNUSED;
|
||
struct internal_syment * sym;
|
||
bfd_vma * addendp;
|
||
{
|
||
reloc_howto_type * howto;
|
||
|
||
|
||
if (rel->r_type >= NUM_ELEM (mcore_coff_howto_table))
|
||
return NULL;
|
||
|
||
howto = mcore_coff_howto_table + rel->r_type;
|
||
|
||
if (rel->r_type == IMAGE_REL_MCORE_RVA)
|
||
* addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase;
|
||
|
||
if (howto->pc_relative)
|
||
{
|
||
* addendp = sec->vma - 2; /* XXX guess - is this right ? */
|
||
|
||
/* If the symbol is defined, then the generic code is going to
|
||
add back the symbol value in order to cancel out an
|
||
adjustment it made to the addend. However, we set the addend
|
||
to 0 at the start of this function. We need to adjust here,
|
||
to avoid the adjustment the generic code will make. FIXME:
|
||
This is getting a bit hackish. */
|
||
if (sym != NULL && sym->n_scnum != 0)
|
||
* addendp -= sym->n_value;
|
||
}
|
||
else
|
||
* addendp = 0;
|
||
|
||
return howto;
|
||
}
|
||
|
||
/* Return true if this relocation should appear in the output .reloc section.
|
||
This function is referenced in pe_mkobject in peicode.h. */
|
||
static boolean
|
||
in_reloc_p (abfd, howto)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
reloc_howto_type * howto;
|
||
{
|
||
return ! howto->pc_relative && howto->type != IMAGE_REL_MCORE_RVA;
|
||
}
|
||
|
||
|
||
/* The reloc processing routine for the optimized COFF linker. */
|
||
static boolean
|
||
coff_mcore_relocate_section (output_bfd, info, input_bfd, input_section,
|
||
contents, relocs, syms, sections)
|
||
bfd * output_bfd;
|
||
struct bfd_link_info * info;
|
||
bfd * input_bfd;
|
||
asection * input_section;
|
||
bfd_byte * contents;
|
||
struct internal_reloc * relocs;
|
||
struct internal_syment * syms;
|
||
asection ** sections;
|
||
{
|
||
struct internal_reloc * rel;
|
||
struct internal_reloc * relend;
|
||
boolean hihalf;
|
||
bfd_vma hihalf_val;
|
||
|
||
/* If we are performing a relocateable link, we don't need to do a
|
||
thing. The caller will take care of adjusting the reloc
|
||
addresses and symbol indices. */
|
||
if (info->relocateable)
|
||
return true;
|
||
|
||
/* Check if we have the same endianess */
|
||
if ( input_bfd->xvec->byteorder != output_bfd->xvec->byteorder
|
||
&& output_bfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: compiled for a %s endian system and target is %s endian.\n"),
|
||
bfd_get_filename (input_bfd),
|
||
bfd_big_endian (input_bfd) ? "big" : "little",
|
||
bfd_big_endian (output_bfd) ? "big" : "little");
|
||
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return false;
|
||
}
|
||
|
||
hihalf = false;
|
||
hihalf_val = 0;
|
||
|
||
rel = relocs;
|
||
relend = rel + input_section->reloc_count;
|
||
|
||
for (; rel < relend; rel++)
|
||
{
|
||
long symndx;
|
||
struct internal_syment * sym;
|
||
bfd_vma val;
|
||
bfd_vma addend;
|
||
bfd_reloc_status_type rstat;
|
||
bfd_byte * loc;
|
||
unsigned short r_type = rel->r_type;
|
||
reloc_howto_type * howto = NULL;
|
||
struct coff_link_hash_entry * h;
|
||
const char * my_name;
|
||
|
||
symndx = rel->r_symndx;
|
||
loc = contents + rel->r_vaddr - input_section->vma;
|
||
|
||
if (symndx == -1)
|
||
{
|
||
h = NULL;
|
||
sym = NULL;
|
||
}
|
||
else
|
||
{
|
||
h = obj_coff_sym_hashes (input_bfd)[symndx];
|
||
sym = syms + symndx;
|
||
}
|
||
|
||
/* Get the howto and initialise the addend. */
|
||
howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
|
||
sym, & addend);
|
||
if (howto == NULL)
|
||
return false;
|
||
|
||
val = 0;
|
||
|
||
if (h == NULL)
|
||
{
|
||
if (symndx == -1)
|
||
my_name = "*ABS*";
|
||
else
|
||
{
|
||
asection * sec = sections[symndx];
|
||
|
||
val = (sym->n_value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
|
||
if (sym == NULL)
|
||
my_name = "*unknown*";
|
||
else if ( sym->_n._n_n._n_zeroes == 0
|
||
&& sym->_n._n_n._n_offset != 0)
|
||
my_name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
|
||
else
|
||
{
|
||
static char buf [SYMNMLEN + 1];
|
||
|
||
strncpy (buf, sym->_n._n_name, SYMNMLEN);
|
||
buf[SYMNMLEN] = '\0';
|
||
my_name = buf;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if ( h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
{
|
||
asection * sec = h->root.u.def.section;
|
||
|
||
val = (h->root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
}
|
||
else
|
||
{
|
||
if (! ((*info->callbacks->undefined_symbol)
|
||
(info, h->root.root.string, input_bfd, input_section,
|
||
rel->r_vaddr - input_section->vma)))
|
||
return false;
|
||
}
|
||
|
||
my_name = h->root.root.string;
|
||
}
|
||
|
||
rstat = bfd_reloc_ok;
|
||
|
||
/* Each case must do its own relocation, setting rstat appropriately. */
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
_bfd_error_handler (_("%s: unsupported relocation type 0x%02x"),
|
||
bfd_get_filename (input_bfd), r_type);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
|
||
case IMAGE_REL_MCORE_ABSOLUTE:
|
||
fprintf (stderr,
|
||
_("Warning: unsupported reloc %s <file %s, section %s>\n"),
|
||
howto->name,
|
||
bfd_get_filename (input_bfd),
|
||
input_section->name);
|
||
|
||
fprintf (stderr,"sym %ld (%s), r_vaddr %ld (%lx)\n",
|
||
rel->r_symndx, my_name, (long) rel->r_vaddr,
|
||
(unsigned long) rel->r_vaddr);
|
||
break;
|
||
|
||
case IMAGE_REL_MCORE_PCREL_IMM8BY4:
|
||
case IMAGE_REL_MCORE_PCREL_IMM11BY2:
|
||
case IMAGE_REL_MCORE_PCREL_IMM4BY2:
|
||
case IMAGE_REL_MCORE_PCREL_32:
|
||
case IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2:
|
||
case IMAGE_REL_MCORE_ADDR32:
|
||
case IMAGE_REL_MCORE_RVA:
|
||
rstat = _bfd_relocate_contents (howto, input_bfd, val, loc);
|
||
break;
|
||
}
|
||
|
||
switch (rstat)
|
||
{
|
||
default:
|
||
abort ();
|
||
|
||
case bfd_reloc_ok:
|
||
break;
|
||
|
||
case bfd_reloc_overflow:
|
||
if (! ((*info->callbacks->reloc_overflow)
|
||
(info, my_name, howto->name,
|
||
(bfd_vma) 0, input_bfd,
|
||
input_section, rel->r_vaddr - input_section->vma)))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Tailor coffcode.h -- macro heaven. */
|
||
|
||
/* We use the special COFF backend linker, with our own special touch. */
|
||
|
||
#define coff_bfd_reloc_type_lookup mcore_coff_reloc_type_lookup
|
||
#define coff_relocate_section coff_mcore_relocate_section
|
||
#define coff_rtype_to_howto coff_mcore_rtype_to_howto
|
||
|
||
#define SELECT_RELOC(internal, howto) {internal.r_type = howto->type;}
|
||
|
||
#define COFF_PAGE_SIZE 0x1000
|
||
|
||
#include "coffcode.h"
|
||
|
||
static const bfd_target *
|
||
pe_object_p (abfd)
|
||
bfd * abfd;
|
||
{
|
||
#ifdef COFF_IMAGE_WITH_PE
|
||
/* We need to hack badly to handle a PE image correctly. In PE
|
||
images created by the GNU linker, the offset to the COFF header
|
||
is always the size. However, this is not the case in images
|
||
generated by other PE linkers. The PE format stores a four byte
|
||
offset to the PE signature just before the COFF header at
|
||
location 0x3c of the file. We pick up that offset, verify that
|
||
the PE signature is there, and then set ourselves up to read in
|
||
the COFF header. */
|
||
{
|
||
bfd_byte ext_offset[4];
|
||
file_ptr offset;
|
||
bfd_byte ext_signature[4];
|
||
unsigned long signature;
|
||
|
||
if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0
|
||
|| bfd_read (ext_offset, 1, 4, abfd) != 4)
|
||
{
|
||
if (bfd_get_error () != bfd_error_system_call)
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return NULL;
|
||
}
|
||
|
||
offset = bfd_h_get_32 (abfd, ext_offset);
|
||
|
||
if (bfd_seek (abfd, offset, SEEK_SET) != 0
|
||
|| bfd_read (ext_signature, 1, 4, abfd) != 4)
|
||
{
|
||
if (bfd_get_error () != bfd_error_system_call)
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
|
||
return NULL;
|
||
}
|
||
|
||
signature = bfd_h_get_32 (abfd, ext_signature);
|
||
|
||
if (signature != 0x4550)
|
||
{
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return NULL;
|
||
}
|
||
|
||
/* Here is the hack. coff_object_p wants to read filhsz bytes to
|
||
pick up the COFF header. We adjust so that that will work. 20
|
||
is the size of the mips COFF filehdr. */
|
||
if (bfd_seek (abfd, (bfd_tell (abfd) - bfd_coff_filhsz (abfd) + 20),
|
||
SEEK_SET) != 0)
|
||
{
|
||
if (bfd_get_error () != bfd_error_system_call)
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
|
||
return NULL;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
return coff_object_p (abfd);
|
||
}
|
||
|
||
/* The transfer vectors that lead the outside world to all of the above. */
|
||
|
||
const bfd_target
|
||
TARGET_BIG_SYM =
|
||
{
|
||
TARGET_BIG_NAME,
|
||
bfd_target_coff_flavour,
|
||
BFD_ENDIAN_BIG, /* data byte order is big */
|
||
BFD_ENDIAN_BIG, /* header byte order is big */
|
||
|
||
(HAS_RELOC | EXEC_P | /* object flags */
|
||
HAS_LINENO | HAS_DEBUG |
|
||
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
||
|
||
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
|
||
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
|
||
|
||
0, /* leading char */
|
||
'/', /* ar_pad_char */
|
||
15, /* ar_max_namelen */
|
||
|
||
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
||
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
||
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
|
||
|
||
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
||
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
||
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
|
||
|
||
{ _bfd_dummy_target,
|
||
pe_object_p, /* bfd_check_format */
|
||
bfd_generic_archive_p, /* _bfd_dummy_target */
|
||
pe_object_p
|
||
},
|
||
{ bfd_false,
|
||
coff_mkobject,
|
||
_bfd_generic_mkarchive, /* bfd_set_format */
|
||
bfd_false
|
||
},
|
||
{ bfd_false,
|
||
coff_write_object_contents, /* bfd_write_contents */
|
||
_bfd_write_archive_contents,
|
||
bfd_false
|
||
},
|
||
|
||
BFD_JUMP_TABLE_GENERIC (coff),
|
||
BFD_JUMP_TABLE_COPY (coff),
|
||
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
||
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
||
BFD_JUMP_TABLE_SYMBOLS (coff),
|
||
BFD_JUMP_TABLE_RELOCS (coff),
|
||
BFD_JUMP_TABLE_WRITE (coff),
|
||
BFD_JUMP_TABLE_LINK (coff),
|
||
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
||
|
||
COFF_SWAP_TABLE,
|
||
};
|
||
|
||
const bfd_target
|
||
TARGET_LITTLE_SYM =
|
||
{
|
||
TARGET_LITTLE_NAME,
|
||
bfd_target_coff_flavour,
|
||
BFD_ENDIAN_LITTLE, /* data byte order is little */
|
||
BFD_ENDIAN_LITTLE, /* header byte order is little */
|
||
|
||
(HAS_RELOC | EXEC_P | /* object flags */
|
||
HAS_LINENO | HAS_DEBUG |
|
||
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
||
|
||
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
|
||
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
|
||
|
||
0, /* leading underscore */
|
||
'/', /* ar_pad_char */
|
||
15, /* ar_max_namelen */
|
||
|
||
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
||
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
||
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
||
|
||
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
||
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
||
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
||
|
||
/* Note that we allow an object file to be treated as a core file as well. */
|
||
{
|
||
_bfd_dummy_target,
|
||
pe_object_p, /* bfd_check_format */
|
||
bfd_generic_archive_p,
|
||
pe_object_p
|
||
},
|
||
{
|
||
bfd_false,
|
||
coff_mkobject,
|
||
_bfd_generic_mkarchive, /* bfd_set_format */
|
||
bfd_false
|
||
},
|
||
{
|
||
bfd_false,
|
||
coff_write_object_contents, /* bfd_write_contents */
|
||
_bfd_write_archive_contents,
|
||
bfd_false
|
||
},
|
||
|
||
BFD_JUMP_TABLE_GENERIC (coff),
|
||
BFD_JUMP_TABLE_COPY (coff),
|
||
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
||
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
||
BFD_JUMP_TABLE_SYMBOLS (coff),
|
||
BFD_JUMP_TABLE_RELOCS (coff),
|
||
BFD_JUMP_TABLE_WRITE (coff),
|
||
BFD_JUMP_TABLE_LINK (coff),
|
||
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
||
|
||
COFF_SWAP_TABLE,
|
||
};
|
||
|