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darling-gdb/bfd/mach-o-i386.c
Tristan Gingold b32e07d7d7 2009-06-25 Tristan Gingold <gingold@adacore.com> 
* mach-o-target.c (bfd_mach_o_get_dynamic_symtab_upper_bound)
	(bfd_mach_o_canonicalize_dynamic_symtab)
	(bfd_mach_o_get_synthetic_symtab): Defines.
	(TARGET_NAME_BACKEND): Add bfd_mach_o_print_thread entry.
	(TARGET_NAME): Use Mach-O specific functions for dynamic.

	* mach-o-i386.c (bfd_mach_o_i386_swap_reloc_in): Fix howto indexes
	for scattered relocations.
	(bfd_mach_o_i386_print_thread): New function.
	(bfd_mach_o_print_thread): Define.

	* mach-o.c (text_section_names_xlat): Add an entry for __const.
	(bfd_mach_o_canonicalize_one_reloc, bfd_mach_o_canonicalize_relocs):
	New functions extracted from ...
	(bfd_mach_o_canonicalize_reloc): ... This.  Simplified.
	(bfd_mach_o_get_dynamic_reloc_upper_bound): New function.
	(bfd_mach_o_canonicalize_dynamic_reloc): New function.
	(bfd_mach_o_i386_flavour_string): Adjusted after enum renaming.
	(bfd_mach_o_ppc_flavour_string): Reindentation.  Add 64 bits cases.
	(bfd_mach_o_scan_read_dylinker): Do not create a section anymore.
	Set name_str field.
	(bfd_mach_o_scan_read_dylib): Ditto.
	(bfd_mach_o_scan_read_thread): Set mdata at declaration.  Add comments,
	reindent.
	(bfd_mach_o_scan_read_dysymtab): Set mdata at declaration.  Correctly
	decode isym and flags on little endian targets.  Set dysymtab field.
	(bfd_mach_o_scan_start_address): Adjust for enum names.
	(bfd_mach_o_lookup_section): Do not look for segments anymore.
	(bfd_mach_o_print_section): Display bfd section name.
	(bfd_mach_o_print_segment): Display none if no name.
	(bfd_mach_o_print_dysymtab): Display next index for local, external
	and undefined symbols.
	(bfd_mach_o_bfd_print_private_bfd_data): Adjust code by using name_str.
	Display dylinker name. Display thread and unixthread commands content.
	(bfd_mach_o_print_thread): New macro.

	* mach-o.h (bfd_mach_o_mach_header_magic): Align numbers.
	(bfd_mach_o_ppc_thread_flavour): Ditto.
	(bfd_mach_o_i386_thread_flavour): Ditto.
	(BFD_MACH_O_PPC_THREAD_STATE_NONE): New enum.
	(BFD_MACH_O_x86_THREAD_STATE_NONE): Replaces
	BFD_MACH_O_THREAD_STATE_NONE.
	(bfd_mach_o_segment_command): Remove segment field.
	(bfd_mach_o_thread_flavour): Field offset is now unsigned long.
	(bfd_mach_o_dylinker_command): Remove section field, add name_str.
	(bfd_mach_o_prebound_dylib_command): Ditto.
	(bfd_mach_o_dylib_command): Ditto.
	(bfd_mach_o_prebound_dylib_command): Remove section field.
	(mach_o_data_struct): Add dysymtab field.
	(bfd_mach_o_backend_data): Add _bfd_mach_o_print_thread field.
	(bfd_mach_o_get_reloc_upper_bound, bfd_mach_o_canonicalize_reloc)
	(bfd_mach_o_build_commands): Remove parameter names and attributes.
	(bfd_mach_o_get_dynamic_reloc_upper_bound)
	(bfd_mach_o_canonicalize_dynamic_reloc): New prototypes.
2009-06-25 12:39:06 +00:00

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/* Intel i386 Mach-O support for BFD.
Copyright 2009
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 3 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, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include "mach-o.h"
#include "bfd.h"
#include "libbfd.h"
#include "libiberty.h"
#define bfd_mach_o_object_p bfd_mach_o_i386_object_p
#define bfd_mach_o_core_p bfd_mach_o_i386_core_p
#define bfd_mach_o_mkobject bfd_mach_o_i386_mkobject
static const bfd_target *
bfd_mach_o_i386_object_p (bfd *abfd)
{
return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_CPU_TYPE_I386);
}
static const bfd_target *
bfd_mach_o_i386_core_p (bfd *abfd)
{
return bfd_mach_o_header_p (abfd,
BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_I386);
}
static bfd_boolean
bfd_mach_o_i386_mkobject (bfd *abfd)
{
bfd_mach_o_data_struct *mdata;
if (!bfd_mach_o_mkobject_init (abfd))
return FALSE;
mdata = bfd_mach_o_get_data (abfd);
mdata->header.magic = BFD_MACH_O_MH_MAGIC;
mdata->header.cputype = BFD_MACH_O_CPU_TYPE_I386;
mdata->header.cpusubtype = BFD_MACH_O_CPU_SUBTYPE_X86_ALL;
mdata->header.byteorder = BFD_ENDIAN_LITTLE;
mdata->header.version = 1;
return TRUE;
}
static reloc_howto_type i386_howto_table[]=
{
HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0,
complain_overflow_bitfield,
NULL, "32",
FALSE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(BFD_RELOC_16, 0, 1, 16, FALSE, 0,
complain_overflow_bitfield,
NULL, "16",
FALSE, 0xffff, 0xffff, FALSE),
HOWTO(BFD_RELOC_8, 0, 0, 8, FALSE, 0,
complain_overflow_bitfield,
NULL, "8",
FALSE, 0xff, 0xff, FALSE),
HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
complain_overflow_bitfield,
NULL, "DISP32",
FALSE, 0xffffffff, 0xffffffff, TRUE),
HOWTO(BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0,
complain_overflow_bitfield,
NULL, "DISP16",
FALSE, 0xffff, 0xffff, TRUE),
HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 2, 32, FALSE, 0,
complain_overflow_bitfield,
NULL, "SECTDIFF_32",
FALSE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 2, 32, FALSE, 0,
complain_overflow_bitfield,
NULL, "PAIR_32",
FALSE, 0xffffffff, 0xffffffff, FALSE),
};
static bfd_boolean
bfd_mach_o_i386_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc)
{
if (reloc->r_scattered)
{
switch (reloc->r_type)
{
case BFD_MACH_O_GENERIC_RELOC_PAIR:
if (reloc->r_length != 2)
return FALSE;
res->howto = &i386_howto_table[6];
res->address = res[-1].address;
return TRUE;
case BFD_MACH_O_GENERIC_RELOC_SECTDIFF:
case BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF:
if (reloc->r_length != 2)
return FALSE;
res->howto = &i386_howto_table[5];
return TRUE;
default:
return FALSE;
}
}
else
{
switch (reloc->r_type)
{
case BFD_MACH_O_GENERIC_RELOC_VANILLA:
switch ((reloc->r_length << 1) | reloc->r_pcrel)
{
case 0: /* len = 0, pcrel = 0 */
res->howto = &i386_howto_table[2];
return TRUE;
case 2: /* len = 1, pcrel = 0 */
res->howto = &i386_howto_table[1];
return TRUE;
case 3: /* len = 1, pcrel = 1 */
res->howto = &i386_howto_table[4];
return TRUE;
case 4: /* len = 2, pcrel = 0 */
res->howto = &i386_howto_table[0];
return TRUE;
case 5: /* len = 2, pcrel = 1 */
res->howto = &i386_howto_table[3];
return TRUE;
default:
return FALSE;
}
break;
default:
return FALSE;
}
}
}
static bfd_boolean
bfd_mach_o_i386_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo)
{
rinfo->r_address = rel->address;
switch (rel->howto->type)
{
case BFD_RELOC_32:
case BFD_RELOC_32_PCREL:
case BFD_RELOC_16:
case BFD_RELOC_16_PCREL:
case BFD_RELOC_8:
rinfo->r_scattered = 0;
rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_VANILLA;
rinfo->r_pcrel = rel->howto->pc_relative;
rinfo->r_length = rel->howto->size; /* Correct in practice. */
if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
{
rinfo->r_extern = 0;
rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index;
}
else
{
rinfo->r_extern = 1;
rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i;
}
break;
case BFD_RELOC_MACH_O_SECTDIFF:
rinfo->r_scattered = 1;
rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_SECTDIFF;
rinfo->r_pcrel = 0;
rinfo->r_length = 2;
rinfo->r_extern = 0;
rinfo->r_value = (*rel->sym_ptr_ptr)->value
+ (*rel->sym_ptr_ptr)->section->vma;
break;
case BFD_RELOC_MACH_O_PAIR:
rinfo->r_address = 0;
rinfo->r_scattered = 1;
rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_PAIR;
rinfo->r_pcrel = 0;
rinfo->r_length = 2;
rinfo->r_extern = 0;
rinfo->r_value = (*rel->sym_ptr_ptr)->value
+ (*rel->sym_ptr_ptr)->section->vma;
break;
default:
return FALSE;
}
return TRUE;
}
static reloc_howto_type *
bfd_mach_o_i386_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
unsigned int i;
for (i = 0; i < sizeof (i386_howto_table) / sizeof (*i386_howto_table); i++)
if (code == i386_howto_table[i].type)
return &i386_howto_table[i];
return NULL;
}
static reloc_howto_type *
bfd_mach_o_i386_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *name ATTRIBUTE_UNUSED)
{
return NULL;
}
static bfd_boolean
bfd_mach_o_i386_print_thread (bfd *abfd, bfd_mach_o_thread_flavour *thread,
void *vfile, char *buf)
{
FILE *file = (FILE *)vfile;
switch (thread->flavour)
{
case BFD_MACH_O_x86_THREAD_STATE:
if (thread->size < (8 + 16 * 4))
return FALSE;
fprintf (file, " x86_THREAD_STATE:\n");
fprintf (file, " flavor: 0x%08lx count: 0x%08lx\n",
(unsigned long)bfd_get_32 (abfd, buf + 0),
(unsigned long)bfd_get_32 (abfd, buf + 4));
fprintf (file, " eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
(unsigned long)bfd_get_32 (abfd, buf + 8),
(unsigned long)bfd_get_32 (abfd, buf + 12),
(unsigned long)bfd_get_32 (abfd, buf + 16),
(unsigned long)bfd_get_32 (abfd, buf + 20));
fprintf (file, " edi: %08lx esi: %08lx ebp: %08lx esp: %08lx\n",
(unsigned long)bfd_get_32 (abfd, buf + 24),
(unsigned long)bfd_get_32 (abfd, buf + 28),
(unsigned long)bfd_get_32 (abfd, buf + 32),
(unsigned long)bfd_get_32 (abfd, buf + 36));
fprintf (file, " ss: %08lx flg: %08lx eip: %08lx cs: %08lx\n",
(unsigned long)bfd_get_32 (abfd, buf + 40),
(unsigned long)bfd_get_32 (abfd, buf + 44),
(unsigned long)bfd_get_32 (abfd, buf + 48),
(unsigned long)bfd_get_32 (abfd, buf + 52));
fprintf (file, " ds: %08lx es: %08lx fs: %08lx gs: %08lx\n",
(unsigned long)bfd_get_32 (abfd, buf + 56),
(unsigned long)bfd_get_32 (abfd, buf + 60),
(unsigned long)bfd_get_32 (abfd, buf + 64),
(unsigned long)bfd_get_32 (abfd, buf + 68));
return TRUE;
case BFD_MACH_O_x86_FLOAT_STATE:
if (thread->size < 8)
return FALSE;
fprintf (file, " x86_FLOAT_STATE:\n");
fprintf (file, " flavor: 0x%08lx count: 0x%08lx\n",
(unsigned long)bfd_get_32 (abfd, buf + 0),
(unsigned long)bfd_get_32 (abfd, buf + 4));
return TRUE;
case BFD_MACH_O_x86_EXCEPTION_STATE:
if (thread->size < 8 + 3 * 4)
return FALSE;
fprintf (file, " x86_EXCEPTION_STATE:\n");
fprintf (file, " flavor: 0x%08lx count: 0x%08lx\n",
(unsigned long)bfd_get_32 (abfd, buf + 0),
(unsigned long)bfd_get_32 (abfd, buf + 4));
fprintf (file, " trapno: %08lx err: %08lx faultaddr: %08lx\n",
(unsigned long)bfd_get_32 (abfd, buf + 8),
(unsigned long)bfd_get_32 (abfd, buf + 12),
(unsigned long)bfd_get_32 (abfd, buf + 16));
return TRUE;
default:
break;
}
return FALSE;
}
#define bfd_mach_o_swap_reloc_in bfd_mach_o_i386_swap_reloc_in
#define bfd_mach_o_swap_reloc_out bfd_mach_o_i386_swap_reloc_out
#define bfd_mach_o_print_thread bfd_mach_o_i386_print_thread
#define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_i386_bfd_reloc_type_lookup
#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_i386_bfd_reloc_name_lookup
#define TARGET_NAME mach_o_i386_vec
#define TARGET_STRING "mach-o-i386"
#define TARGET_BIG_ENDIAN 0
#define TARGET_ARCHIVE 0
#include "mach-o-target.c"
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