/* Intel i386 Mach-O support for BFD.
- Copyright 2009
- Free Software Foundation, Inc.
+ Copyright (C) 2009-2020 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, BFD_MACH_O_CPU_TYPE_I386);
+ 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,
- BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_I386);
+ return bfd_mach_o_header_p (abfd, 0,
+ BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_I386);
}
static bfd_boolean
if (!bfd_mach_o_mkobject_init (abfd))
return FALSE;
- mdata = abfd->tdata.mach_o_data;
+ 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.filetype = BFD_MACH_O_MH_OBJECT;
mdata->header.byteorder = BFD_ENDIAN_LITTLE;
mdata->header.version = 1;
return TRUE;
}
-#define TARGET_NAME mach_o_i386_vec
-#define TARGET_STRING "mach-o-i386"
-#define TARGET_BIG_ENDIAN 0
-#define TARGET_ARCHIVE 0
+static reloc_howto_type i386_howto_table[]=
+{
+ /* 0 */
+ 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),
+ /* 4 */
+ 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_LOCAL_SECTDIFF, 0, 2, 32, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "LSECTDIFF_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),
+ /* 8 */
+ HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 1, 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,
+ complain_overflow_bitfield,
+ NULL, "LSECTDIFF_16",
+ FALSE, 0xffff, 0xffff, FALSE),
+ HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 1, 16, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "PAIR_16",
+ 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,
+ arelent * res_base)
+{
+ bfd_mach_o_reloc_info reloc;
+
+ if (!bfd_mach_o_pre_canonicalize_one_reloc (abfd, raw, &reloc, res, syms))
+ return FALSE;
+
+ if (reloc.r_scattered)
+ {
+ switch (reloc.r_type)
+ {
+ 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)
+ {
+ res->howto = &i386_howto_table[10];
+ res->address = res[-1].address;
+ return TRUE;
+ }
+ 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)
+ {
+ res->howto = &i386_howto_table[8];
+ 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)
+ {
+ res->howto = &i386_howto_table[9];
+ 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;
+ }
+ default:
+ break;
+ }
+ }
+ 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->output_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 = rel->howto->size;
+ rinfo->r_extern = 0;
+ rinfo->r_value = rel->addend;
+ break;
+ case BFD_RELOC_MACH_O_LOCAL_SECTDIFF:
+ 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_extern = 0;
+ rinfo->r_value = rel->addend;
+ 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 = rel->howto->size;
+ rinfo->r_extern = 0;
+ rinfo->r_value = rel->addend;
+ 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;
+}
+
+static const mach_o_section_name_xlat text_section_names_xlat[] =
+ {
+ { ".symbol_stub", "__symbol_stub",
+ SEC_CODE | SEC_LOAD, BFD_MACH_O_S_SYMBOL_STUBS,
+ BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS,
+ 0},
+ { ".picsymbol_stub", "__picsymbol_stub",
+ SEC_CODE | SEC_LOAD, BFD_MACH_O_S_SYMBOL_STUBS,
+ BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS,
+ 0},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+static const mach_o_section_name_xlat data_section_names_xlat[] =
+ {
+ /* The first two are recognized by i386, but not emitted for x86 by
+ modern GCC. */
+ { ".non_lazy_symbol_pointer", "__nl_symbol_ptr",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { ".lazy_symbol_pointer", "__la_symbol_ptr",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LAZY_SYMBOL_POINTERS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { ".lazy_symbol_pointer2", "__la_sym_ptr2",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LAZY_SYMBOL_POINTERS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { ".lazy_symbol_pointer3", "__la_sym_ptr3",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LAZY_SYMBOL_POINTERS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+static const mach_o_section_name_xlat import_section_names_xlat[] =
+ {
+ { ".picsymbol_stub3", "__jump_table",
+ SEC_CODE | SEC_LOAD, BFD_MACH_O_S_SYMBOL_STUBS,
+ BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS
+ | BFD_MACH_O_S_SELF_MODIFYING_CODE,
+ 6},
+ { ".non_lazy_symbol_pointer_x86", "__pointers",
+ SEC_DATA | SEC_LOAD, BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS,
+ BFD_MACH_O_S_ATTR_NONE, 2},
+ { NULL, NULL, 0, 0, 0, 0}
+ };
+
+const mach_o_segment_name_xlat mach_o_i386_segsec_names_xlat[] =
+ {
+ { "__TEXT", text_section_names_xlat },
+ { "__DATA", data_section_names_xlat },
+ { "__IMPORT", import_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_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_ARCHITECTURE bfd_arch_i386
+#define TARGET_PAGESIZE 4096
+#define TARGET_BIG_ENDIAN 0
+#define TARGET_ARCHIVE 0
+#define TARGET_PRIORITY 0
#include "mach-o-target.c"
projects / deliverable / binutils-gdb.git / blobdiff