diff options
Diffstat (limited to 'binutils-2.25/bfd/mach-o-i386.c')
| -rw-r--r-- | binutils-2.25/bfd/mach-o-i386.c | 403 |
1 files changed, 403 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/mach-o-i386.c b/binutils-2.25/bfd/mach-o-i386.c new file mode 100644 index 00000000..97e0d58b --- /dev/null +++ b/binutils-2.25/bfd/mach-o-i386.c @@ -0,0 +1,403 @@ +/* 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" +#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 * +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[]= +{ + /* 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_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) + { + 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: + 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 = 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_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_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 mach_o_i386_vec +#define TARGET_STRING "mach-o-i386" +#define TARGET_ARCHITECTURE bfd_arch_i386 +#define TARGET_BIG_ENDIAN 0 +#define TARGET_ARCHIVE 0 +#define TARGET_PRIORITY 0 +#include "mach-o-target.c" |