/* Intel i386 Mach-O support for BFD.
- Copyright (C) 2009-2017 Free Software Foundation, Inc.
+ Copyright (C) 2009-2023 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
MA 02110-1301, USA. */
#include "sysdep.h"
-#include "mach-o.h"
#include "bfd.h"
#include "libbfd.h"
#include "libiberty.h"
+#include "mach-o.h"
#include "mach-o/reloc.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 *
+static bfd_cleanup
bfd_mach_o_i386_object_p (bfd *abfd)
{
return bfd_mach_o_header_p (abfd, 0, 0, BFD_MACH_O_CPU_TYPE_I386);
}
-static const bfd_target *
+static bfd_cleanup
bfd_mach_o_i386_core_p (bfd *abfd)
{
return bfd_mach_o_header_p (abfd, 0,
- BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_I386);
+ BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_I386);
}
-static bfd_boolean
+static bool
bfd_mach_o_i386_mkobject (bfd *abfd)
{
bfd_mach_o_data_struct *mdata;
if (!bfd_mach_o_mkobject_init (abfd))
- return FALSE;
+ return false;
mdata = bfd_mach_o_get_data (abfd);
mdata->header.magic = BFD_MACH_O_MH_MAGIC;
mdata->header.byteorder = BFD_ENDIAN_LITTLE;
mdata->header.version = 1;
- return TRUE;
+ return true;
}
static reloc_howto_type i386_howto_table[]=
{
/* 0 */
- HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0,
+ HOWTO(BFD_RELOC_32, 0, 4, 32, false, 0,
complain_overflow_bitfield,
NULL, "32",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
- HOWTO(BFD_RELOC_16, 0, 1, 16, FALSE, 0,
+ false, 0xffffffff, 0xffffffff, false),
+ HOWTO(BFD_RELOC_16, 0, 2, 16, false, 0,
complain_overflow_bitfield,
NULL, "16",
- FALSE, 0xffff, 0xffff, FALSE),
- HOWTO(BFD_RELOC_8, 0, 0, 8, FALSE, 0,
+ false, 0xffff, 0xffff, false),
+ HOWTO(BFD_RELOC_8, 0, 1, 8, false, 0,
complain_overflow_bitfield,
NULL, "8",
- FALSE, 0xff, 0xff, FALSE),
- HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
+ false, 0xff, 0xff, false),
+ HOWTO(BFD_RELOC_32_PCREL, 0, 4, 32, true, 0,
complain_overflow_bitfield,
NULL, "DISP32",
- FALSE, 0xffffffff, 0xffffffff, TRUE),
+ false, 0xffffffff, 0xffffffff, true),
/* 4 */
- HOWTO(BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0,
+ HOWTO(BFD_RELOC_16_PCREL, 0, 2, 16, true, 0,
complain_overflow_bitfield,
NULL, "DISP16",
- FALSE, 0xffff, 0xffff, TRUE),
- HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 2, 32, FALSE, 0,
+ false, 0xffff, 0xffff, true),
+ HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 4, 32, false, 0,
complain_overflow_bitfield,
NULL, "SECTDIFF_32",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
- HOWTO(BFD_RELOC_MACH_O_LOCAL_SECTDIFF, 0, 2, 32, FALSE, 0,
+ false, 0xffffffff, 0xffffffff, false),
+ HOWTO(BFD_RELOC_MACH_O_LOCAL_SECTDIFF, 0, 4, 32, false, 0,
complain_overflow_bitfield,
NULL, "LSECTDIFF_32",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
- HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 2, 32, FALSE, 0,
+ false, 0xffffffff, 0xffffffff, false),
+ HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 4, 32, false, 0,
complain_overflow_bitfield,
NULL, "PAIR_32",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
+ false, 0xffffffff, 0xffffffff, false),
/* 8 */
- HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 1, 16, FALSE, 0,
+ HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 2, 16, false, 0,
complain_overflow_bitfield,
NULL, "SECTDIFF_16",
- FALSE, 0xffff, 0xffff, FALSE),
- HOWTO(BFD_RELOC_MACH_O_LOCAL_SECTDIFF, 0, 1, 16, FALSE, 0,
+ false, 0xffff, 0xffff, false),
+ HOWTO(BFD_RELOC_MACH_O_LOCAL_SECTDIFF, 0, 2, 16, false, 0,
complain_overflow_bitfield,
NULL, "LSECTDIFF_16",
- FALSE, 0xffff, 0xffff, FALSE),
- HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 1, 16, FALSE, 0,
+ false, 0xffff, 0xffff, false),
+ HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 2, 16, false, 0,
complain_overflow_bitfield,
NULL, "PAIR_16",
- FALSE, 0xffff, 0xffff, FALSE),
+ false, 0xffff, 0xffff, false),
};
-static bfd_boolean
-bfd_mach_o_i386_canonicalize_one_reloc (bfd *abfd,
- struct mach_o_reloc_info_external *raw,
- arelent *res, asymbol **syms)
+static bool
+bfd_mach_o_i386_canonicalize_one_reloc (bfd * abfd,
+ struct mach_o_reloc_info_external * raw,
+ arelent * res,
+ asymbol ** syms,
+ arelent * res_base)
{
bfd_mach_o_reloc_info reloc;
if (!bfd_mach_o_pre_canonicalize_one_reloc (abfd, raw, &reloc, res, syms))
- return FALSE;
+ return false;
if (reloc.r_scattered)
{
switch (reloc.r_type)
- {
- case BFD_MACH_O_GENERIC_RELOC_PAIR:
- if (reloc.r_length == 2)
- {
+ {
+ case BFD_MACH_O_GENERIC_RELOC_PAIR:
+ /* PR 21813: Check for a corrupt PAIR reloc at the start. */
+ if (res == res_base)
+ return false;
+ if (reloc.r_length == 2)
+ {
res->howto = &i386_howto_table[7];
res->address = res[-1].address;
- return TRUE;
- }
- else if (reloc.r_length == 1)
+ return true;
+ }
+ else if (reloc.r_length == 1)
{
res->howto = &i386_howto_table[10];
res->address = res[-1].address;
- return TRUE;
+ return true;
}
- return FALSE;
- case BFD_MACH_O_GENERIC_RELOC_SECTDIFF:
- if (reloc.r_length == 2)
- {
+ return false;
+ case BFD_MACH_O_GENERIC_RELOC_SECTDIFF:
+ if (reloc.r_length == 2)
+ {
res->howto = &i386_howto_table[5];
- return TRUE;
- }
- else if (reloc.r_length == 1)
- {
+ return true;
+ }
+ else if (reloc.r_length == 1)
+ {
res->howto = &i386_howto_table[8];
- return TRUE;
- }
- return FALSE;
- case BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF:
- if (reloc.r_length == 2)
- {
+ return true;
+ }
+ return false;
+ case BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF:
+ if (reloc.r_length == 2)
+ {
res->howto = &i386_howto_table[6];
- return TRUE;
- }
- else if (reloc.r_length == 1)
- {
+ return true;
+ }
+ else if (reloc.r_length == 1)
+ {
res->howto = &i386_howto_table[9];
- return TRUE;
- }
- return FALSE;
- default:
- return FALSE;
- }
+ return true;
+ }
+ return false;
+ default:
+ break;
+ }
}
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;
- }
+ {
+ 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;
+ }
+ default:
+ break;
+ }
}
+ return false;
}
-static bfd_boolean
+static bool
bfd_mach_o_i386_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo)
{
rinfo->r_address = rel->address;
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. */
+ rinfo->r_length = bfd_log2 (bfd_get_reloc_size (rel->howto));
if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
- {
- rinfo->r_extern = 0;
- rinfo->r_value =
+ {
+ rinfo->r_extern = 0;
+ rinfo->r_value =
(*rel->sym_ptr_ptr)->section->output_section->target_index;
- }
+ }
else
- {
- rinfo->r_extern = 1;
- rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i;
- }
+ {
+ 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 = rel->howto->size;
+ rinfo->r_length = bfd_log2 (bfd_get_reloc_size (rel->howto));
rinfo->r_extern = 0;
rinfo->r_value = rel->addend;
break;
rinfo->r_scattered = 1;
rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF;
rinfo->r_pcrel = 0;
- rinfo->r_length = rel->howto->size;
+ rinfo->r_length = bfd_log2 (bfd_get_reloc_size (rel->howto));
rinfo->r_extern = 0;
rinfo->r_value = rel->addend;
break;
rinfo->r_scattered = 1;
rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_PAIR;
rinfo->r_pcrel = 0;
- rinfo->r_length = rel->howto->size;
+ rinfo->r_length = bfd_log2 (bfd_get_reloc_size (rel->howto));
rinfo->r_extern = 0;
rinfo->r_value = rel->addend;
break;
default:
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
static reloc_howto_type *
bfd_mach_o_i386_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
+ bfd_reloc_code_real_type code)
{
unsigned int i;
static reloc_howto_type *
bfd_mach_o_i386_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *name ATTRIBUTE_UNUSED)
+ const char *name ATTRIBUTE_UNUSED)
{
return NULL;
}
-static bfd_boolean
+static bool
bfd_mach_o_i386_print_thread (bfd *abfd, bfd_mach_o_thread_flavour *thread,
- void *vfile, char *buf)
+ void *vfile, char *buf)
{
FILE *file = (FILE *)vfile;
{
case BFD_MACH_O_x86_THREAD_STATE:
if (thread->size < (8 + 16 * 4))
- return FALSE;
+ 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));
+ (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));
+ (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));
+ (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));
+ (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;
+ (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;
+ 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;
+ (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;
+ 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));
+ (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;
+ (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;
+ return false;
}
static const mach_o_section_name_xlat text_section_names_xlat[] =
{ NULL, NULL }
};
-#define bfd_mach_o_canonicalize_one_reloc bfd_mach_o_i386_canonicalize_one_reloc
-#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_canonicalize_one_reloc bfd_mach_o_i386_canonicalize_one_reloc
+#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_tgt_seg_table mach_o_i386_segsec_names_xlat
#define bfd_mach_o_section_type_valid_for_tgt NULL
#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 i386_mach_o_vec
-#define TARGET_STRING "mach-o-i386"
+#define TARGET_NAME i386_mach_o_vec
+#define TARGET_STRING "mach-o-i386"
#define TARGET_ARCHITECTURE bfd_arch_i386
#define TARGET_PAGESIZE 4096
-#define TARGET_BIG_ENDIAN 0
-#define TARGET_ARCHIVE 0
+#define TARGET_BIG_ENDIAN 0
+#define TARGET_ARCHIVE 0
#define TARGET_PRIORITY 0
#include "mach-o-target.c"
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