| /* Mach-O support for BFD. |
| Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
| 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, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| |
| #include "mach-o.h" |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| #include "libiberty.h" |
| #include <ctype.h> |
| |
| #ifndef BFD_IO_FUNCS |
| #define BFD_IO_FUNCS 0 |
| #endif |
| |
| #define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive |
| #define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr |
| #define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap |
| #define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table |
| #define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table |
| #define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname |
| #define bfd_mach_o_write_armap _bfd_noarchive_write_armap |
| #define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index |
| #define bfd_mach_o_generic_stat_arch_elt _bfd_noarchive_generic_stat_arch_elt |
| #define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp |
| #define bfd_mach_o_close_and_cleanup _bfd_generic_close_and_cleanup |
| #define bfd_mach_o_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
| #define bfd_mach_o_new_section_hook _bfd_generic_new_section_hook |
| #define bfd_mach_o_get_section_contents_in_window _bfd_generic_get_section_contents_in_window |
| #define bfd_mach_o_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name |
| #define bfd_mach_o_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) |
| #define bfd_mach_o_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name |
| #define bfd_mach_o_get_lineno _bfd_nosymbols_get_lineno |
| #define bfd_mach_o_find_nearest_line _bfd_nosymbols_find_nearest_line |
| #define bfd_mach_o_find_inliner_info _bfd_nosymbols_find_inliner_info |
| #define bfd_mach_o_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
| #define bfd_mach_o_read_minisymbols _bfd_generic_read_minisymbols |
| #define bfd_mach_o_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| #define bfd_mach_o_get_reloc_upper_bound _bfd_norelocs_get_reloc_upper_bound |
| #define bfd_mach_o_canonicalize_reloc _bfd_norelocs_canonicalize_reloc |
| #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup |
| #define bfd_mach_o_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
| #define bfd_mach_o_bfd_relax_section bfd_generic_relax_section |
| #define bfd_mach_o_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| #define bfd_mach_o_bfd_link_hash_table_free _bfd_generic_link_hash_table_free |
| #define bfd_mach_o_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| #define bfd_mach_o_bfd_link_just_syms _bfd_generic_link_just_syms |
| #define bfd_mach_o_bfd_final_link _bfd_generic_final_link |
| #define bfd_mach_o_bfd_link_split_section _bfd_generic_link_split_section |
| #define bfd_mach_o_set_arch_mach bfd_default_set_arch_mach |
| #define bfd_mach_o_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data |
| #define bfd_mach_o_bfd_set_private_flags _bfd_generic_bfd_set_private_flags |
| #define bfd_mach_o_bfd_print_private_bfd_data _bfd_generic_bfd_print_private_bfd_data |
| #define bfd_mach_o_get_section_contents _bfd_generic_get_section_contents |
| #define bfd_mach_o_set_section_contents _bfd_generic_set_section_contents |
| #define bfd_mach_o_bfd_gc_sections bfd_generic_gc_sections |
| #define bfd_mach_o_bfd_merge_sections bfd_generic_merge_sections |
| #define bfd_mach_o_bfd_is_group_section bfd_generic_is_group_section |
| #define bfd_mach_o_bfd_discard_group bfd_generic_discard_group |
| #define bfd_mach_o_section_already_linked _bfd_generic_section_already_linked |
| #define bfd_mach_o_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
| |
| |
| /* The flags field of a section structure is separated into two parts a section |
| type and section attributes. The section types are mutually exclusive (it |
| can only have one type) but the section attributes are not (it may have more |
| than one attribute). */ |
| |
| #define SECTION_TYPE 0x000000ff /* 256 section types. */ |
| #define SECTION_ATTRIBUTES 0xffffff00 /* 24 section attributes. */ |
| |
| /* Constants for the section attributes part of the flags field of a section |
| structure. */ |
| |
| #define SECTION_ATTRIBUTES_USR 0xff000000 /* User-settable attributes. */ |
| #define S_ATTR_PURE_INSTRUCTIONS 0x80000000 /* Section contains only true machine instructions. */ |
| #define SECTION_ATTRIBUTES_SYS 0x00ffff00 /* System setable attributes. */ |
| #define S_ATTR_SOME_INSTRUCTIONS 0x00000400 /* Section contains some machine instructions. */ |
| #define S_ATTR_EXT_RELOC 0x00000200 /* Section has external relocation entries. */ |
| #define S_ATTR_LOC_RELOC 0x00000100 /* Section has local relocation entries. */ |
| |
| #define N_STAB 0xe0 |
| #define N_TYPE 0x1e |
| #define N_EXT 0x01 |
| #define N_UNDF 0x0 |
| #define N_ABS 0x2 |
| #define N_SECT 0xe |
| #define N_INDR 0xa |
| |
| bfd_boolean |
| bfd_mach_o_valid (bfd *abfd) |
| { |
| if (abfd == NULL || abfd->xvec == NULL) |
| return 0; |
| |
| if (! ((abfd->xvec == &mach_o_be_vec) |
| || (abfd->xvec == &mach_o_le_vec) |
| || (abfd->xvec == &mach_o_fat_vec))) |
| return 0; |
| |
| if (abfd->tdata.mach_o_data == NULL) |
| return 0; |
| return 1; |
| } |
| |
| /* Copy any private info we understand from the input symbol |
| to the output symbol. */ |
| |
| static bfd_boolean |
| bfd_mach_o_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| asymbol *isymbol ATTRIBUTE_UNUSED, |
| bfd *obfd ATTRIBUTE_UNUSED, |
| asymbol *osymbol ATTRIBUTE_UNUSED) |
| { |
| return TRUE; |
| } |
| |
| /* Copy any private info we understand from the input section |
| to the output section. */ |
| |
| static bfd_boolean |
| bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| asection *isection ATTRIBUTE_UNUSED, |
| bfd *obfd ATTRIBUTE_UNUSED, |
| asection *osection ATTRIBUTE_UNUSED) |
| { |
| return TRUE; |
| } |
| |
| /* Copy any private info we understand from the input bfd |
| to the output bfd. */ |
| |
| static bfd_boolean |
| bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
| { |
| BFD_ASSERT (bfd_mach_o_valid (ibfd)); |
| BFD_ASSERT (bfd_mach_o_valid (obfd)); |
| |
| obfd->tdata.mach_o_data = ibfd->tdata.mach_o_data; |
| obfd->tdata.mach_o_data->ibfd = ibfd; |
| return TRUE; |
| } |
| |
| static long |
| bfd_mach_o_count_symbols (bfd *abfd) |
| { |
| bfd_mach_o_data_struct *mdata = NULL; |
| long nsyms = 0; |
| unsigned long i; |
| |
| BFD_ASSERT (bfd_mach_o_valid (abfd)); |
| mdata = abfd->tdata.mach_o_data; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB) |
| { |
| bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab; |
| nsyms += sym->nsyms; |
| } |
| |
| return nsyms; |
| } |
| |
| static long |
| bfd_mach_o_get_symtab_upper_bound (bfd *abfd) |
| { |
| long nsyms = bfd_mach_o_count_symbols (abfd); |
| |
| if (nsyms < 0) |
| return nsyms; |
| |
| return ((nsyms + 1) * sizeof (asymbol *)); |
| } |
| |
| static long |
| bfd_mach_o_canonicalize_symtab (bfd *abfd, asymbol **alocation) |
| { |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| long nsyms = bfd_mach_o_count_symbols (abfd); |
| asymbol **csym = alocation; |
| unsigned long i, j; |
| |
| if (nsyms < 0) |
| return nsyms; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| if (mdata->commands[i].type == BFD_MACH_O_LC_SYMTAB) |
| { |
| bfd_mach_o_symtab_command *sym = &mdata->commands[i].command.symtab; |
| |
| if (bfd_mach_o_scan_read_symtab_symbols (abfd, &mdata->commands[i].command.symtab) != 0) |
| { |
| fprintf (stderr, "bfd_mach_o_canonicalize_symtab: unable to load symbols for section %lu\n", i); |
| return 0; |
| } |
| |
| BFD_ASSERT (sym->symbols != NULL); |
| |
| for (j = 0; j < sym->nsyms; j++) |
| { |
| BFD_ASSERT (csym < (alocation + nsyms)); |
| *csym++ = &sym->symbols[j]; |
| } |
| } |
| } |
| |
| *csym++ = NULL; |
| |
| return nsyms; |
| } |
| |
| static void |
| bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
| asymbol *symbol, |
| symbol_info *ret) |
| { |
| bfd_symbol_info (symbol, ret); |
| } |
| |
| static void |
| bfd_mach_o_print_symbol (bfd *abfd, |
| PTR afile, |
| asymbol *symbol, |
| bfd_print_symbol_type how) |
| { |
| FILE *file = (FILE *) afile; |
| |
| switch (how) |
| { |
| case bfd_print_symbol_name: |
| fprintf (file, "%s", symbol->name); |
| break; |
| default: |
| bfd_print_symbol_vandf (abfd, (PTR) file, symbol); |
| fprintf (file, " %-5s %s", symbol->section->name, symbol->name); |
| } |
| } |
| |
| static void |
| bfd_mach_o_convert_architecture (bfd_mach_o_cpu_type mtype, |
| bfd_mach_o_cpu_subtype msubtype ATTRIBUTE_UNUSED, |
| enum bfd_architecture *type, |
| unsigned long *subtype) |
| { |
| *subtype = bfd_arch_unknown; |
| |
| switch (mtype) |
| { |
| case BFD_MACH_O_CPU_TYPE_VAX: *type = bfd_arch_vax; break; |
| case BFD_MACH_O_CPU_TYPE_MC680x0: *type = bfd_arch_m68k; break; |
| case BFD_MACH_O_CPU_TYPE_I386: *type = bfd_arch_i386; break; |
| case BFD_MACH_O_CPU_TYPE_MIPS: *type = bfd_arch_mips; break; |
| case BFD_MACH_O_CPU_TYPE_MC98000: *type = bfd_arch_m98k; break; |
| case BFD_MACH_O_CPU_TYPE_HPPA: *type = bfd_arch_hppa; break; |
| case BFD_MACH_O_CPU_TYPE_ARM: *type = bfd_arch_arm; break; |
| case BFD_MACH_O_CPU_TYPE_MC88000: *type = bfd_arch_m88k; break; |
| case BFD_MACH_O_CPU_TYPE_SPARC: *type = bfd_arch_sparc; break; |
| case BFD_MACH_O_CPU_TYPE_I860: *type = bfd_arch_i860; break; |
| case BFD_MACH_O_CPU_TYPE_ALPHA: *type = bfd_arch_alpha; break; |
| case BFD_MACH_O_CPU_TYPE_POWERPC: *type = bfd_arch_powerpc; break; |
| default: *type = bfd_arch_unknown; break; |
| } |
| |
| switch (*type) |
| { |
| case bfd_arch_i386: *subtype = bfd_mach_i386_i386; break; |
| case bfd_arch_sparc: *subtype = bfd_mach_sparc; break; |
| default: |
| *subtype = bfd_arch_unknown; |
| } |
| } |
| |
| static int |
| bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header) |
| { |
| unsigned char buf[28]; |
| |
| bfd_h_put_32 (abfd, header->magic, buf + 0); |
| bfd_h_put_32 (abfd, header->cputype, buf + 4); |
| bfd_h_put_32 (abfd, header->cpusubtype, buf + 8); |
| bfd_h_put_32 (abfd, header->filetype, buf + 12); |
| bfd_h_put_32 (abfd, header->ncmds, buf + 16); |
| bfd_h_put_32 (abfd, header->sizeofcmds, buf + 20); |
| bfd_h_put_32 (abfd, header->flags, buf + 24); |
| |
| bfd_seek (abfd, 0, SEEK_SET); |
| if (bfd_bwrite ((PTR) buf, 28, abfd) != 28) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_write_thread (bfd *abfd, |
| bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_thread_command *cmd = &command->command.thread; |
| unsigned int i; |
| unsigned char buf[8]; |
| bfd_vma offset; |
| unsigned int nflavours; |
| |
| BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD) |
| || (command->type == BFD_MACH_O_LC_UNIXTHREAD)); |
| |
| offset = 8; |
| nflavours = 0; |
| for (i = 0; i < cmd->nflavours; i++) |
| { |
| BFD_ASSERT ((cmd->flavours[i].size % 4) == 0); |
| BFD_ASSERT (cmd->flavours[i].offset == (command->offset + offset + 8)); |
| |
| bfd_h_put_32 (abfd, cmd->flavours[i].flavour, buf); |
| bfd_h_put_32 (abfd, (cmd->flavours[i].size / 4), buf + 4); |
| |
| bfd_seek (abfd, command->offset + offset, SEEK_SET); |
| if (bfd_bwrite ((PTR) buf, 8, abfd) != 8) |
| return -1; |
| |
| offset += cmd->flavours[i].size + 8; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_write_section (bfd *abfd, |
| bfd_mach_o_section *section, |
| bfd_vma offset) |
| { |
| unsigned char buf[68]; |
| |
| memcpy (buf, section->sectname, 16); |
| memcpy (buf + 16, section->segname, 16); |
| bfd_h_put_32 (abfd, section->addr, buf + 32); |
| bfd_h_put_32 (abfd, section->size, buf + 36); |
| bfd_h_put_32 (abfd, section->offset, buf + 40); |
| bfd_h_put_32 (abfd, section->align, buf + 44); |
| bfd_h_put_32 (abfd, section->reloff, buf + 48); |
| bfd_h_put_32 (abfd, section->nreloc, buf + 52); |
| bfd_h_put_32 (abfd, section->flags, buf + 56); |
| /* bfd_h_put_32 (abfd, section->reserved1, buf + 60); */ |
| /* bfd_h_put_32 (abfd, section->reserved2, buf + 64); */ |
| |
| bfd_seek (abfd, offset, SEEK_SET); |
| if (bfd_bwrite ((PTR) buf, 68, abfd) != 68) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_write_segment (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| unsigned char buf[48]; |
| bfd_mach_o_segment_command *seg = &command->command.segment; |
| unsigned long i; |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT); |
| |
| memcpy (buf, seg->segname, 16); |
| bfd_h_put_32 (abfd, seg->vmaddr, buf + 16); |
| bfd_h_put_32 (abfd, seg->vmsize, buf + 20); |
| bfd_h_put_32 (abfd, seg->fileoff, buf + 24); |
| bfd_h_put_32 (abfd, seg->filesize, buf + 28); |
| bfd_h_put_32 (abfd, 0 /* seg->maxprot */, buf + 32); |
| bfd_h_put_32 (abfd, 0 /* seg->initprot */, buf + 36); |
| bfd_h_put_32 (abfd, seg->nsects, buf + 40); |
| bfd_h_put_32 (abfd, seg->flags, buf + 44); |
| |
| bfd_seek (abfd, command->offset + 8, SEEK_SET); |
| if (bfd_bwrite ((PTR) buf, 48, abfd) != 48) |
| return -1; |
| |
| { |
| char buf[1024]; |
| bfd_vma nbytes = seg->filesize; |
| bfd_vma curoff = seg->fileoff; |
| |
| while (nbytes > 0) |
| { |
| bfd_vma thisread = nbytes; |
| |
| if (thisread > 1024) |
| thisread = 1024; |
| |
| bfd_seek (abfd, curoff, SEEK_SET); |
| if (bfd_bread ((PTR) buf, thisread, abfd) != thisread) |
| return -1; |
| |
| bfd_seek (abfd, curoff, SEEK_SET); |
| if (bfd_bwrite ((PTR) buf, thisread, abfd) != thisread) |
| return -1; |
| |
| nbytes -= thisread; |
| curoff += thisread; |
| } |
| } |
| |
| for (i = 0; i < seg->nsects; i++) |
| { |
| bfd_vma segoff = command->offset + 48 + 8 + (i * 68); |
| |
| if (bfd_mach_o_scan_write_section (abfd, &seg->sections[i], segoff) != 0) |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_write_symtab_symbols (bfd *abfd, |
| bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_symtab_command *sym = &command->command.symtab; |
| asymbol *s = NULL; |
| unsigned long i; |
| |
| for (i = 0; i < sym->nsyms; i++) |
| { |
| unsigned char buf[12]; |
| bfd_vma symoff = sym->symoff + (i * 12); |
| unsigned char ntype = 0; |
| unsigned char nsect = 0; |
| short ndesc = 0; |
| |
| s = &sym->symbols[i]; |
| |
| /* Instead just set from the stored values. */ |
| ntype = (s->udata.i >> 24) & 0xff; |
| nsect = (s->udata.i >> 16) & 0xff; |
| ndesc = s->udata.i & 0xffff; |
| |
| bfd_h_put_32 (abfd, s->name - sym->strtab, buf); |
| bfd_h_put_8 (abfd, ntype, buf + 4); |
| bfd_h_put_8 (abfd, nsect, buf + 5); |
| bfd_h_put_16 (abfd, ndesc, buf + 6); |
| bfd_h_put_32 (abfd, s->section->vma + s->value, buf + 8); |
| |
| bfd_seek (abfd, symoff, SEEK_SET); |
| if (bfd_bwrite ((PTR) buf, 12, abfd) != 12) |
| { |
| fprintf (stderr, "bfd_mach_o_scan_write_symtab_symbols: unable to write %d bytes at %lu\n", |
| 12, (unsigned long) symoff); |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_write_symtab (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_symtab_command *seg = &command->command.symtab; |
| unsigned char buf[16]; |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB); |
| |
| bfd_h_put_32 (abfd, seg->symoff, buf); |
| bfd_h_put_32 (abfd, seg->nsyms, buf + 4); |
| bfd_h_put_32 (abfd, seg->stroff, buf + 8); |
| bfd_h_put_32 (abfd, seg->strsize, buf + 12); |
| |
| bfd_seek (abfd, command->offset + 8, SEEK_SET); |
| if (bfd_bwrite ((PTR) buf, 16, abfd) != 16) |
| return -1; |
| |
| if (bfd_mach_o_scan_write_symtab_symbols (abfd, command) != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| static bfd_boolean |
| bfd_mach_o_write_contents (bfd *abfd) |
| { |
| unsigned int i; |
| asection *s; |
| |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| |
| /* Write data sections first in case they overlap header data to be |
| written later. */ |
| |
| for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
| ; |
| |
| /* Now write header information. */ |
| if (bfd_mach_o_write_header (abfd, &mdata->header) != 0) |
| return FALSE; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| unsigned char buf[8]; |
| bfd_mach_o_load_command *cur = &mdata->commands[i]; |
| unsigned long typeflag; |
| |
| typeflag = cur->type_required ? cur->type & BFD_MACH_O_LC_REQ_DYLD : cur->type; |
| |
| bfd_h_put_32 (abfd, typeflag, buf); |
| bfd_h_put_32 (abfd, cur->len, buf + 4); |
| |
| bfd_seek (abfd, cur->offset, SEEK_SET); |
| if (bfd_bwrite ((PTR) buf, 8, abfd) != 8) |
| return FALSE; |
| |
| switch (cur->type) |
| { |
| case BFD_MACH_O_LC_SEGMENT: |
| if (bfd_mach_o_scan_write_segment (abfd, cur) != 0) |
| return FALSE; |
| break; |
| case BFD_MACH_O_LC_SYMTAB: |
| if (bfd_mach_o_scan_write_symtab (abfd, cur) != 0) |
| return FALSE; |
| break; |
| case BFD_MACH_O_LC_SYMSEG: |
| break; |
| case BFD_MACH_O_LC_THREAD: |
| case BFD_MACH_O_LC_UNIXTHREAD: |
| if (bfd_mach_o_scan_write_thread (abfd, cur) != 0) |
| return FALSE; |
| break; |
| case BFD_MACH_O_LC_LOADFVMLIB: |
| case BFD_MACH_O_LC_IDFVMLIB: |
| case BFD_MACH_O_LC_IDENT: |
| case BFD_MACH_O_LC_FVMFILE: |
| case BFD_MACH_O_LC_PREPAGE: |
| case BFD_MACH_O_LC_DYSYMTAB: |
| case BFD_MACH_O_LC_LOAD_DYLIB: |
| case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: |
| case BFD_MACH_O_LC_ID_DYLIB: |
| case BFD_MACH_O_LC_LOAD_DYLINKER: |
| case BFD_MACH_O_LC_ID_DYLINKER: |
| case BFD_MACH_O_LC_PREBOUND_DYLIB: |
| case BFD_MACH_O_LC_ROUTINES: |
| case BFD_MACH_O_LC_SUB_FRAMEWORK: |
| break; |
| default: |
| fprintf (stderr, |
| "unable to write unknown load command 0x%lx\n", |
| (long) cur->type); |
| return FALSE; |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| static int |
| bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED, |
| bfd_boolean b ATTRIBUTE_UNUSED) |
| { |
| return 0; |
| } |
| |
| /* Make an empty symbol. This is required only because |
| bfd_make_section_anyway wants to create a symbol for the section. */ |
| |
| static asymbol * |
| bfd_mach_o_make_empty_symbol (bfd *abfd) |
| { |
| asymbol *new; |
| |
| new = bfd_zalloc (abfd, sizeof (* new)); |
| if (new == NULL) |
| return new; |
| new->the_bfd = abfd; |
| return new; |
| } |
| |
| static int |
| bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header) |
| { |
| unsigned char buf[28]; |
| bfd_vma (*get32) (const void *) = NULL; |
| |
| bfd_seek (abfd, 0, SEEK_SET); |
| |
| if (bfd_bread ((PTR) buf, 28, abfd) != 28) |
| return -1; |
| |
| if (bfd_getb32 (buf) == 0xfeedface) |
| { |
| header->byteorder = BFD_ENDIAN_BIG; |
| header->magic = 0xfeedface; |
| get32 = bfd_getb32; |
| } |
| else if (bfd_getl32 (buf) == 0xfeedface) |
| { |
| header->byteorder = BFD_ENDIAN_LITTLE; |
| header->magic = 0xfeedface; |
| get32 = bfd_getl32; |
| } |
| else |
| { |
| header->byteorder = BFD_ENDIAN_UNKNOWN; |
| return -1; |
| } |
| |
| header->cputype = (*get32) (buf + 4); |
| header->cpusubtype = (*get32) (buf + 8); |
| header->filetype = (*get32) (buf + 12); |
| header->ncmds = (*get32) (buf + 16); |
| header->sizeofcmds = (*get32) (buf + 20); |
| header->flags = (*get32) (buf + 24); |
| |
| return 0; |
| } |
| |
| static asection * |
| bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section) |
| { |
| asection *bfdsec; |
| char *sname; |
| const char *prefix = "LC_SEGMENT"; |
| unsigned int snamelen; |
| |
| snamelen = strlen (prefix) + 1 |
| + strlen (section->segname) + 1 |
| + strlen (section->sectname) + 1; |
| |
| sname = bfd_alloc (abfd, snamelen); |
| if (sname == NULL) |
| return NULL; |
| sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname); |
| |
| bfdsec = bfd_make_section_anyway (abfd, sname); |
| if (bfdsec == NULL) |
| return NULL; |
| |
| bfdsec->vma = section->addr; |
| bfdsec->lma = section->addr; |
| bfdsec->size = section->size; |
| bfdsec->filepos = section->offset; |
| bfdsec->alignment_power = section->align; |
| |
| if (section->flags & BFD_MACH_O_S_ZEROFILL) |
| bfdsec->flags = SEC_ALLOC; |
| else |
| bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE; |
| |
| return bfdsec; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_section (bfd *abfd, |
| bfd_mach_o_section *section, |
| bfd_vma offset) |
| { |
| unsigned char buf[68]; |
| |
| bfd_seek (abfd, offset, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 68, abfd) != 68) |
| return -1; |
| |
| memcpy (section->sectname, buf, 16); |
| section->sectname[16] = '\0'; |
| memcpy (section->segname, buf + 16, 16); |
| section->segname[16] = '\0'; |
| section->addr = bfd_h_get_32 (abfd, buf + 32); |
| section->size = bfd_h_get_32 (abfd, buf + 36); |
| section->offset = bfd_h_get_32 (abfd, buf + 40); |
| section->align = bfd_h_get_32 (abfd, buf + 44); |
| section->reloff = bfd_h_get_32 (abfd, buf + 48); |
| section->nreloc = bfd_h_get_32 (abfd, buf + 52); |
| section->flags = bfd_h_get_32 (abfd, buf + 56); |
| section->reserved1 = bfd_h_get_32 (abfd, buf + 60); |
| section->reserved2 = bfd_h_get_32 (abfd, buf + 64); |
| section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section); |
| |
| if (section->bfdsection == NULL) |
| return -1; |
| |
| return 0; |
| } |
| |
| int |
| bfd_mach_o_scan_read_symtab_symbol (bfd *abfd, |
| bfd_mach_o_symtab_command *sym, |
| asymbol *s, |
| unsigned long i) |
| { |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| bfd_vma symoff = sym->symoff + (i * 12); |
| unsigned char buf[12]; |
| unsigned char type = -1; |
| unsigned char section = -1; |
| short desc = -1; |
| unsigned long value = -1; |
| unsigned long stroff = -1; |
| unsigned int symtype = -1; |
| |
| BFD_ASSERT (sym->strtab != NULL); |
| |
| bfd_seek (abfd, symoff, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 12, abfd) != 12) |
| { |
| fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n", |
| 12, (unsigned long) symoff); |
| return -1; |
| } |
| |
| stroff = bfd_h_get_32 (abfd, buf); |
| type = bfd_h_get_8 (abfd, buf + 4); |
| symtype = (type & 0x0e); |
| section = bfd_h_get_8 (abfd, buf + 5) - 1; |
| desc = bfd_h_get_16 (abfd, buf + 6); |
| value = bfd_h_get_32 (abfd, buf + 8); |
| |
| if (stroff >= sym->strsize) |
| { |
| fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: symbol name out of range (%lu >= %lu)\n", |
| (unsigned long) stroff, (unsigned long) sym->strsize); |
| return -1; |
| } |
| |
| s->the_bfd = abfd; |
| s->name = sym->strtab + stroff; |
| s->value = value; |
| s->udata.i = (type << 24) | (section << 16) | desc; |
| s->flags = 0x0; |
| |
| if (type & BFD_MACH_O_N_STAB) |
| { |
| s->flags |= BSF_DEBUGGING; |
| s->section = bfd_und_section_ptr; |
| } |
| else |
| { |
| if (type & BFD_MACH_O_N_PEXT) |
| { |
| type &= ~BFD_MACH_O_N_PEXT; |
| s->flags |= BSF_GLOBAL; |
| } |
| |
| if (type & BFD_MACH_O_N_EXT) |
| { |
| type &= ~BFD_MACH_O_N_EXT; |
| s->flags |= BSF_GLOBAL; |
| } |
| |
| switch (symtype) |
| { |
| case BFD_MACH_O_N_UNDF: |
| s->section = bfd_und_section_ptr; |
| break; |
| case BFD_MACH_O_N_PBUD: |
| s->section = bfd_und_section_ptr; |
| break; |
| case BFD_MACH_O_N_ABS: |
| s->section = bfd_abs_section_ptr; |
| break; |
| case BFD_MACH_O_N_SECT: |
| if ((section > 0) && (section <= mdata->nsects)) |
| { |
| s->section = mdata->sections[section - 1]->bfdsection; |
| s->value = s->value - mdata->sections[section - 1]->addr; |
| } |
| else |
| { |
| /* Mach-O uses 0 to mean "no section"; not an error. */ |
| if (section != 0) |
| { |
| fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: " |
| "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined\n", |
| s->name, section, mdata->nsects); |
| } |
| s->section = bfd_und_section_ptr; |
| } |
| break; |
| case BFD_MACH_O_N_INDR: |
| fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: " |
| "symbol \"%s\" is unsupported 'indirect' reference: setting to undefined\n", |
| s->name); |
| s->section = bfd_und_section_ptr; |
| break; |
| default: |
| fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: " |
| "symbol \"%s\" specified invalid type field 0x%x: setting to undefined\n", |
| s->name, symtype); |
| s->section = bfd_und_section_ptr; |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int |
| bfd_mach_o_scan_read_symtab_strtab (bfd *abfd, |
| bfd_mach_o_symtab_command *sym) |
| { |
| BFD_ASSERT (sym->strtab == NULL); |
| |
| if (abfd->flags & BFD_IN_MEMORY) |
| { |
| struct bfd_in_memory *b; |
| |
| b = (struct bfd_in_memory *) abfd->iostream; |
| |
| if ((sym->stroff + sym->strsize) > b->size) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| return -1; |
| } |
| sym->strtab = (char *) b->buffer + sym->stroff; |
| return 0; |
| } |
| |
| sym->strtab = bfd_alloc (abfd, sym->strsize); |
| if (sym->strtab == NULL) |
| return -1; |
| |
| bfd_seek (abfd, sym->stroff, SEEK_SET); |
| if (bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize) |
| { |
| fprintf (stderr, "bfd_mach_o_scan_read_symtab_strtab: unable to read %lu bytes at %lu\n", |
| sym->strsize, sym->stroff); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int |
| bfd_mach_o_scan_read_symtab_symbols (bfd *abfd, |
| bfd_mach_o_symtab_command *sym) |
| { |
| unsigned long i; |
| int ret; |
| |
| BFD_ASSERT (sym->symbols == NULL); |
| sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (asymbol)); |
| |
| if (sym->symbols == NULL) |
| { |
| fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbols: unable to allocate memory for symbols\n"); |
| return -1; |
| } |
| |
| ret = bfd_mach_o_scan_read_symtab_strtab (abfd, sym); |
| if (ret != 0) |
| return ret; |
| |
| for (i = 0; i < sym->nsyms; i++) |
| { |
| ret = bfd_mach_o_scan_read_symtab_symbol (abfd, sym, &sym->symbols[i], i); |
| if (ret != 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| int |
| bfd_mach_o_scan_read_dysymtab_symbol (bfd *abfd, |
| bfd_mach_o_dysymtab_command *dysym, |
| bfd_mach_o_symtab_command *sym, |
| asymbol *s, |
| unsigned long i) |
| { |
| unsigned long isymoff = dysym->indirectsymoff + (i * 4); |
| unsigned long symindex; |
| unsigned char buf[4]; |
| |
| BFD_ASSERT (i < dysym->nindirectsyms); |
| |
| bfd_seek (abfd, isymoff, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 4, abfd) != 4) |
| { |
| fprintf (stderr, "bfd_mach_o_scan_read_dysymtab_symbol: unable to read %lu bytes at %lu\n", |
| (unsigned long) 4, isymoff); |
| return -1; |
| } |
| symindex = bfd_h_get_32 (abfd, buf); |
| |
| return bfd_mach_o_scan_read_symtab_symbol (abfd, sym, s, symindex); |
| } |
| |
| static const char * |
| bfd_mach_o_i386_flavour_string (unsigned int flavour) |
| { |
| switch ((int) flavour) |
| { |
| case BFD_MACH_O_i386_NEW_THREAD_STATE: return "i386_NEW_THREAD_STATE"; |
| case BFD_MACH_O_i386_FLOAT_STATE: return "i386_FLOAT_STATE"; |
| case BFD_MACH_O_i386_ISA_PORT_MAP_STATE: return "i386_ISA_PORT_MAP_STATE"; |
| case BFD_MACH_O_i386_V86_ASSIST_STATE: return "i386_V86_ASSIST_STATE"; |
| case BFD_MACH_O_i386_REGS_SEGS_STATE: return "i386_REGS_SEGS_STATE"; |
| case BFD_MACH_O_i386_THREAD_SYSCALL_STATE: return "i386_THREAD_SYSCALL_STATE"; |
| case BFD_MACH_O_i386_THREAD_STATE_NONE: return "i386_THREAD_STATE_NONE"; |
| case BFD_MACH_O_i386_SAVED_STATE: return "i386_SAVED_STATE"; |
| case BFD_MACH_O_i386_THREAD_STATE: return "i386_THREAD_STATE"; |
| case BFD_MACH_O_i386_THREAD_FPSTATE: return "i386_THREAD_FPSTATE"; |
| case BFD_MACH_O_i386_THREAD_EXCEPTSTATE: return "i386_THREAD_EXCEPTSTATE"; |
| case BFD_MACH_O_i386_THREAD_CTHREADSTATE: return "i386_THREAD_CTHREADSTATE"; |
| default: return "UNKNOWN"; |
| } |
| } |
| |
| static const char * |
| bfd_mach_o_ppc_flavour_string (unsigned int flavour) |
| { |
| switch ((int) flavour) |
| { |
| case BFD_MACH_O_PPC_THREAD_STATE: return "PPC_THREAD_STATE"; |
| case BFD_MACH_O_PPC_FLOAT_STATE: return "PPC_FLOAT_STATE"; |
| case BFD_MACH_O_PPC_EXCEPTION_STATE: return "PPC_EXCEPTION_STATE"; |
| case BFD_MACH_O_PPC_VECTOR_STATE: return "PPC_VECTOR_STATE"; |
| default: return "UNKNOWN"; |
| } |
| } |
| |
| static int |
| bfd_mach_o_scan_read_dylinker (bfd *abfd, |
| bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_dylinker_command *cmd = &command->command.dylinker; |
| unsigned char buf[4]; |
| unsigned int nameoff; |
| asection *bfdsec; |
| char *sname; |
| const char *prefix; |
| |
| BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER) |
| || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER)); |
| |
| bfd_seek (abfd, command->offset + 8, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 4, abfd) != 4) |
| return -1; |
| |
| nameoff = bfd_h_get_32 (abfd, buf + 0); |
| |
| cmd->name_offset = command->offset + nameoff; |
| cmd->name_len = command->len - nameoff; |
| |
| if (command->type == BFD_MACH_O_LC_LOAD_DYLINKER) |
| prefix = "LC_LOAD_DYLINKER"; |
| else if (command->type == BFD_MACH_O_LC_ID_DYLINKER) |
| prefix = "LC_ID_DYLINKER"; |
| else |
| abort (); |
| |
| sname = bfd_alloc (abfd, strlen (prefix) + 1); |
| if (sname == NULL) |
| return -1; |
| strcpy (sname, prefix); |
| |
| bfdsec = bfd_make_section_anyway (abfd, sname); |
| if (bfdsec == NULL) |
| return -1; |
| |
| bfdsec->vma = 0; |
| bfdsec->lma = 0; |
| bfdsec->size = command->len - 8; |
| bfdsec->filepos = command->offset + 8; |
| bfdsec->alignment_power = 0; |
| bfdsec->flags = SEC_HAS_CONTENTS; |
| |
| cmd->section = bfdsec; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_dylib (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_dylib_command *cmd = &command->command.dylib; |
| unsigned char buf[16]; |
| unsigned int nameoff; |
| asection *bfdsec; |
| char *sname; |
| const char *prefix; |
| |
| BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLIB) |
| || (command->type == BFD_MACH_O_LC_LOAD_DYLIB) |
| || (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB)); |
| |
| bfd_seek (abfd, command->offset + 8, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 16, abfd) != 16) |
| return -1; |
| |
| nameoff = bfd_h_get_32 (abfd, buf + 0); |
| cmd->timestamp = bfd_h_get_32 (abfd, buf + 4); |
| cmd->current_version = bfd_h_get_32 (abfd, buf + 8); |
| cmd->compatibility_version = bfd_h_get_32 (abfd, buf + 12); |
| |
| cmd->name_offset = command->offset + nameoff; |
| cmd->name_len = command->len - nameoff; |
| |
| if (command->type == BFD_MACH_O_LC_LOAD_DYLIB) |
| prefix = "LC_LOAD_DYLIB"; |
| else if (command->type == BFD_MACH_O_LC_LOAD_WEAK_DYLIB) |
| prefix = "LC_LOAD_WEAK_DYLIB"; |
| else if (command->type == BFD_MACH_O_LC_ID_DYLIB) |
| prefix = "LC_ID_DYLIB"; |
| else |
| abort (); |
| |
| sname = bfd_alloc (abfd, strlen (prefix) + 1); |
| if (sname == NULL) |
| return -1; |
| strcpy (sname, prefix); |
| |
| bfdsec = bfd_make_section_anyway (abfd, sname); |
| if (bfdsec == NULL) |
| return -1; |
| |
| bfdsec->vma = 0; |
| bfdsec->lma = 0; |
| bfdsec->size = command->len - 8; |
| bfdsec->filepos = command->offset + 8; |
| bfdsec->alignment_power = 0; |
| bfdsec->flags = SEC_HAS_CONTENTS; |
| |
| cmd->section = bfdsec; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED, |
| bfd_mach_o_load_command *command ATTRIBUTE_UNUSED) |
| { |
| /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */ |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB); |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_thread (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_data_struct *mdata = NULL; |
| bfd_mach_o_thread_command *cmd = &command->command.thread; |
| unsigned char buf[8]; |
| bfd_vma offset; |
| unsigned int nflavours; |
| unsigned int i; |
| |
| BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD) |
| || (command->type == BFD_MACH_O_LC_UNIXTHREAD)); |
| |
| BFD_ASSERT (bfd_mach_o_valid (abfd)); |
| mdata = abfd->tdata.mach_o_data; |
| |
| offset = 8; |
| nflavours = 0; |
| while (offset != command->len) |
| { |
| if (offset >= command->len) |
| return -1; |
| |
| bfd_seek (abfd, command->offset + offset, SEEK_SET); |
| |
| if (bfd_bread ((PTR) buf, 8, abfd) != 8) |
| return -1; |
| |
| offset += 8 + bfd_h_get_32 (abfd, buf + 4) * 4; |
| nflavours++; |
| } |
| |
| cmd->flavours = bfd_alloc (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour)); |
| if (cmd->flavours == NULL) |
| return -1; |
| cmd->nflavours = nflavours; |
| |
| offset = 8; |
| nflavours = 0; |
| while (offset != command->len) |
| { |
| if (offset >= command->len) |
| return -1; |
| |
| if (nflavours >= cmd->nflavours) |
| return -1; |
| |
| bfd_seek (abfd, command->offset + offset, SEEK_SET); |
| |
| if (bfd_bread ((PTR) buf, 8, abfd) != 8) |
| return -1; |
| |
| cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, buf); |
| cmd->flavours[nflavours].offset = command->offset + offset + 8; |
| cmd->flavours[nflavours].size = bfd_h_get_32 (abfd, buf + 4) * 4; |
| offset += cmd->flavours[nflavours].size + 8; |
| nflavours++; |
| } |
| |
| for (i = 0; i < nflavours; i++) |
| { |
| asection *bfdsec; |
| unsigned int snamelen; |
| char *sname; |
| const char *flavourstr; |
| const char *prefix = "LC_THREAD"; |
| unsigned int j = 0; |
| |
| switch (mdata->header.cputype) |
| { |
| case BFD_MACH_O_CPU_TYPE_POWERPC: |
| flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour); |
| break; |
| case BFD_MACH_O_CPU_TYPE_I386: |
| flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour); |
| break; |
| default: |
| flavourstr = "UNKNOWN_ARCHITECTURE"; |
| break; |
| } |
| |
| snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1; |
| sname = bfd_alloc (abfd, snamelen); |
| if (sname == NULL) |
| return -1; |
| |
| for (;;) |
| { |
| sprintf (sname, "%s.%s.%u", prefix, flavourstr, j); |
| if (bfd_get_section_by_name (abfd, sname) == NULL) |
| break; |
| j++; |
| } |
| |
| bfdsec = bfd_make_section (abfd, sname); |
| |
| bfdsec->vma = 0; |
| bfdsec->lma = 0; |
| bfdsec->size = cmd->flavours[i].size; |
| bfdsec->filepos = cmd->flavours[i].offset; |
| bfdsec->alignment_power = 0x0; |
| bfdsec->flags = SEC_HAS_CONTENTS; |
| |
| cmd->section = bfdsec; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_dysymtab_command *seg = &command->command.dysymtab; |
| unsigned char buf[72]; |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_DYSYMTAB); |
| |
| bfd_seek (abfd, command->offset + 8, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 72, abfd) != 72) |
| return -1; |
| |
| seg->ilocalsym = bfd_h_get_32 (abfd, buf + 0); |
| seg->nlocalsym = bfd_h_get_32 (abfd, buf + 4); |
| seg->iextdefsym = bfd_h_get_32 (abfd, buf + 8); |
| seg->nextdefsym = bfd_h_get_32 (abfd, buf + 12); |
| seg->iundefsym = bfd_h_get_32 (abfd, buf + 16); |
| seg->nundefsym = bfd_h_get_32 (abfd, buf + 20); |
| seg->tocoff = bfd_h_get_32 (abfd, buf + 24); |
| seg->ntoc = bfd_h_get_32 (abfd, buf + 28); |
| seg->modtaboff = bfd_h_get_32 (abfd, buf + 32); |
| seg->nmodtab = bfd_h_get_32 (abfd, buf + 36); |
| seg->extrefsymoff = bfd_h_get_32 (abfd, buf + 40); |
| seg->nextrefsyms = bfd_h_get_32 (abfd, buf + 44); |
| seg->indirectsymoff = bfd_h_get_32 (abfd, buf + 48); |
| seg->nindirectsyms = bfd_h_get_32 (abfd, buf + 52); |
| seg->extreloff = bfd_h_get_32 (abfd, buf + 56); |
| seg->nextrel = bfd_h_get_32 (abfd, buf + 60); |
| seg->locreloff = bfd_h_get_32 (abfd, buf + 64); |
| seg->nlocrel = bfd_h_get_32 (abfd, buf + 68); |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_symtab (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_symtab_command *seg = &command->command.symtab; |
| unsigned char buf[16]; |
| asection *bfdsec; |
| char *sname; |
| const char *prefix = "LC_SYMTAB.stabs"; |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB); |
| |
| bfd_seek (abfd, command->offset + 8, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 16, abfd) != 16) |
| return -1; |
| |
| seg->symoff = bfd_h_get_32 (abfd, buf); |
| seg->nsyms = bfd_h_get_32 (abfd, buf + 4); |
| seg->stroff = bfd_h_get_32 (abfd, buf + 8); |
| seg->strsize = bfd_h_get_32 (abfd, buf + 12); |
| seg->symbols = NULL; |
| seg->strtab = NULL; |
| |
| sname = bfd_alloc (abfd, strlen (prefix) + 1); |
| if (sname == NULL) |
| return -1; |
| strcpy (sname, prefix); |
| |
| bfdsec = bfd_make_section_anyway (abfd, sname); |
| if (bfdsec == NULL) |
| return -1; |
| |
| bfdsec->vma = 0; |
| bfdsec->lma = 0; |
| bfdsec->size = seg->nsyms * 12; |
| bfdsec->filepos = seg->symoff; |
| bfdsec->alignment_power = 0; |
| bfdsec->flags = SEC_HAS_CONTENTS; |
| |
| seg->stabs_segment = bfdsec; |
| |
| prefix = "LC_SYMTAB.stabstr"; |
| sname = bfd_alloc (abfd, strlen (prefix) + 1); |
| if (sname == NULL) |
| return -1; |
| strcpy (sname, prefix); |
| |
| bfdsec = bfd_make_section_anyway (abfd, sname); |
| if (bfdsec == NULL) |
| return -1; |
| |
| bfdsec->vma = 0; |
| bfdsec->lma = 0; |
| bfdsec->size = seg->strsize; |
| bfdsec->filepos = seg->stroff; |
| bfdsec->alignment_power = 0; |
| bfdsec->flags = SEC_HAS_CONTENTS; |
| |
| seg->stabstr_segment = bfdsec; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_segment (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| unsigned char buf[48]; |
| bfd_mach_o_segment_command *seg = &command->command.segment; |
| unsigned long i; |
| asection *bfdsec; |
| char *sname; |
| const char *prefix = "LC_SEGMENT"; |
| unsigned int snamelen; |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT); |
| |
| bfd_seek (abfd, command->offset + 8, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 48, abfd) != 48) |
| return -1; |
| |
| memcpy (seg->segname, buf, 16); |
| seg->vmaddr = bfd_h_get_32 (abfd, buf + 16); |
| seg->vmsize = bfd_h_get_32 (abfd, buf + 20); |
| seg->fileoff = bfd_h_get_32 (abfd, buf + 24); |
| seg->filesize = bfd_h_get_32 (abfd, buf + 28); |
| /* seg->maxprot = bfd_h_get_32 (abfd, buf + 32); */ |
| /* seg->initprot = bfd_h_get_32 (abfd, buf + 36); */ |
| seg->nsects = bfd_h_get_32 (abfd, buf + 40); |
| seg->flags = bfd_h_get_32 (abfd, buf + 44); |
| |
| snamelen = strlen (prefix) + 1 + strlen (seg->segname) + 1; |
| sname = bfd_alloc (abfd, snamelen); |
| if (sname == NULL) |
| return -1; |
| sprintf (sname, "%s.%s", prefix, seg->segname); |
| |
| bfdsec = bfd_make_section_anyway (abfd, sname); |
| if (bfdsec == NULL) |
| return -1; |
| |
| bfdsec->vma = seg->vmaddr; |
| bfdsec->lma = seg->vmaddr; |
| bfdsec->size = seg->filesize; |
| bfdsec->filepos = seg->fileoff; |
| bfdsec->alignment_power = 0x0; |
| bfdsec->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE; |
| |
| seg->segment = bfdsec; |
| |
| if (seg->nsects != 0) |
| { |
| seg->sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section)); |
| if (seg->sections == NULL) |
| return -1; |
| |
| for (i = 0; i < seg->nsects; i++) |
| { |
| bfd_vma segoff = command->offset + 48 + 8 + (i * 68); |
| |
| if (bfd_mach_o_scan_read_section (abfd, &seg->sections[i], |
| segoff) != 0) |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_command (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| unsigned char buf[8]; |
| |
| bfd_seek (abfd, command->offset, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 8, abfd) != 8) |
| return -1; |
| |
| command->type = (bfd_h_get_32 (abfd, buf) & ~BFD_MACH_O_LC_REQ_DYLD); |
| command->type_required = (bfd_h_get_32 (abfd, buf) & BFD_MACH_O_LC_REQ_DYLD |
| ? 1 : 0); |
| command->len = bfd_h_get_32 (abfd, buf + 4); |
| |
| switch (command->type) |
| { |
| case BFD_MACH_O_LC_SEGMENT: |
| if (bfd_mach_o_scan_read_segment (abfd, command) != 0) |
| return -1; |
| break; |
| case BFD_MACH_O_LC_SYMTAB: |
| if (bfd_mach_o_scan_read_symtab (abfd, command) != 0) |
| return -1; |
| break; |
| case BFD_MACH_O_LC_SYMSEG: |
| break; |
| case BFD_MACH_O_LC_THREAD: |
| case BFD_MACH_O_LC_UNIXTHREAD: |
| if (bfd_mach_o_scan_read_thread (abfd, command) != 0) |
| return -1; |
| break; |
| case BFD_MACH_O_LC_LOAD_DYLINKER: |
| case BFD_MACH_O_LC_ID_DYLINKER: |
| if (bfd_mach_o_scan_read_dylinker (abfd, command) != 0) |
| return -1; |
| break; |
| case BFD_MACH_O_LC_LOAD_DYLIB: |
| case BFD_MACH_O_LC_ID_DYLIB: |
| case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: |
| if (bfd_mach_o_scan_read_dylib (abfd, command) != 0) |
| return -1; |
| break; |
| case BFD_MACH_O_LC_PREBOUND_DYLIB: |
| if (bfd_mach_o_scan_read_prebound_dylib (abfd, command) != 0) |
| return -1; |
| break; |
| case BFD_MACH_O_LC_LOADFVMLIB: |
| case BFD_MACH_O_LC_IDFVMLIB: |
| case BFD_MACH_O_LC_IDENT: |
| case BFD_MACH_O_LC_FVMFILE: |
| case BFD_MACH_O_LC_PREPAGE: |
| case BFD_MACH_O_LC_ROUTINES: |
| case BFD_MACH_O_LC_SUB_FRAMEWORK: |
| break; |
| case BFD_MACH_O_LC_DYSYMTAB: |
| if (bfd_mach_o_scan_read_dysymtab (abfd, command) != 0) |
| return -1; |
| break; |
| case BFD_MACH_O_LC_SUB_UMBRELLA: |
| case BFD_MACH_O_LC_SUB_CLIENT: |
| case BFD_MACH_O_LC_SUB_LIBRARY: |
| case BFD_MACH_O_LC_TWOLEVEL_HINTS: |
| case BFD_MACH_O_LC_PREBIND_CKSUM: |
| break; |
| default: |
| fprintf (stderr, "unable to read unknown load command 0x%lx\n", |
| (unsigned long) command->type); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static void |
| bfd_mach_o_flatten_sections (bfd *abfd) |
| { |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| long csect = 0; |
| unsigned long i, j; |
| |
| mdata->nsects = 0; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT) |
| { |
| bfd_mach_o_segment_command *seg; |
| |
| seg = &mdata->commands[i].command.segment; |
| mdata->nsects += seg->nsects; |
| } |
| } |
| |
| mdata->sections = bfd_alloc (abfd, |
| mdata->nsects * sizeof (bfd_mach_o_section *)); |
| csect = 0; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT) |
| { |
| bfd_mach_o_segment_command *seg; |
| |
| seg = &mdata->commands[i].command.segment; |
| BFD_ASSERT (csect + seg->nsects <= mdata->nsects); |
| |
| for (j = 0; j < seg->nsects; j++) |
| mdata->sections[csect++] = &seg->sections[j]; |
| } |
| } |
| } |
| |
| int |
| bfd_mach_o_scan_start_address (bfd *abfd) |
| { |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| bfd_mach_o_thread_command *cmd = NULL; |
| unsigned long i; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) || |
| (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD)) |
| { |
| if (cmd == NULL) |
| cmd = &mdata->commands[i].command.thread; |
| else |
| return 0; |
| } |
| } |
| |
| if (cmd == NULL) |
| return 0; |
| |
| for (i = 0; i < cmd->nflavours; i++) |
| { |
| if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386) |
| && (cmd->flavours[i].flavour |
| == (unsigned long) BFD_MACH_O_i386_THREAD_STATE)) |
| { |
| unsigned char buf[4]; |
| |
| bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET); |
| |
| if (bfd_bread (buf, 4, abfd) != 4) |
| return -1; |
| |
| abfd->start_address = bfd_h_get_32 (abfd, buf); |
| } |
| else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC) |
| && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE)) |
| { |
| unsigned char buf[4]; |
| |
| bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET); |
| |
| if (bfd_bread (buf, 4, abfd) != 4) |
| return -1; |
| |
| abfd->start_address = bfd_h_get_32 (abfd, buf); |
| } |
| } |
| |
| return 0; |
| } |
| |
| int |
| bfd_mach_o_scan (bfd *abfd, |
| bfd_mach_o_header *header, |
| bfd_mach_o_data_struct *mdata) |
| { |
| unsigned int i; |
| enum bfd_architecture cputype; |
| unsigned long cpusubtype; |
| |
| mdata->header = *header; |
| mdata->symbols = NULL; |
| |
| abfd->flags = (abfd->xvec->object_flags |
| | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS))); |
| abfd->tdata.mach_o_data = mdata; |
| |
| bfd_mach_o_convert_architecture (header->cputype, header->cpusubtype, |
| &cputype, &cpusubtype); |
| if (cputype == bfd_arch_unknown) |
| { |
| fprintf (stderr, "bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx\n", |
| header->cputype, header->cpusubtype); |
| return -1; |
| } |
| |
| bfd_set_arch_mach (abfd, cputype, cpusubtype); |
| |
| if (header->ncmds != 0) |
| { |
| mdata->commands = bfd_alloc (abfd, header->ncmds * sizeof (bfd_mach_o_load_command)); |
| if (mdata->commands == NULL) |
| return -1; |
| |
| for (i = 0; i < header->ncmds; i++) |
| { |
| bfd_mach_o_load_command *cur = &mdata->commands[i]; |
| |
| if (i == 0) |
| cur->offset = 28; |
| else |
| { |
| bfd_mach_o_load_command *prev = &mdata->commands[i - 1]; |
| cur->offset = prev->offset + prev->len; |
| } |
| |
| if (bfd_mach_o_scan_read_command (abfd, cur) < 0) |
| return -1; |
| } |
| } |
| |
| if (bfd_mach_o_scan_start_address (abfd) < 0) |
| return -1; |
| |
| bfd_mach_o_flatten_sections (abfd); |
| return 0; |
| } |
| |
| bfd_boolean |
| bfd_mach_o_mkobject (bfd *abfd) |
| { |
| bfd_mach_o_data_struct *mdata = NULL; |
| |
| mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct)); |
| if (mdata == NULL) |
| return FALSE; |
| abfd->tdata.mach_o_data = mdata; |
| |
| mdata->header.magic = 0; |
| mdata->header.cputype = 0; |
| mdata->header.cpusubtype = 0; |
| mdata->header.filetype = 0; |
| mdata->header.ncmds = 0; |
| mdata->header.sizeofcmds = 0; |
| mdata->header.flags = 0; |
| mdata->header.byteorder = BFD_ENDIAN_UNKNOWN; |
| mdata->commands = NULL; |
| mdata->nsymbols = 0; |
| mdata->symbols = NULL; |
| mdata->nsects = 0; |
| mdata->sections = NULL; |
| mdata->ibfd = NULL; |
| |
| return TRUE; |
| } |
| |
| const bfd_target * |
| bfd_mach_o_object_p (bfd *abfd) |
| { |
| struct bfd_preserve preserve; |
| bfd_mach_o_header header; |
| |
| preserve.marker = NULL; |
| if (bfd_mach_o_read_header (abfd, &header) != 0) |
| goto wrong; |
| |
| if (! (header.byteorder == BFD_ENDIAN_BIG |
| || header.byteorder == BFD_ENDIAN_LITTLE)) |
| { |
| fprintf (stderr, "unknown header byte-order value 0x%lx\n", |
| (long) header.byteorder); |
| goto wrong; |
| } |
| |
| if (! ((header.byteorder == BFD_ENDIAN_BIG |
| && abfd->xvec->byteorder == BFD_ENDIAN_BIG |
| && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG) |
| || (header.byteorder == BFD_ENDIAN_LITTLE |
| && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE |
| && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE))) |
| goto wrong; |
| |
| preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct)); |
| if (preserve.marker == NULL |
| || !bfd_preserve_save (abfd, &preserve)) |
| goto fail; |
| |
| if (bfd_mach_o_scan (abfd, &header, |
| (bfd_mach_o_data_struct *) preserve.marker) != 0) |
| goto wrong; |
| |
| bfd_preserve_finish (abfd, &preserve); |
| return abfd->xvec; |
| |
| wrong: |
| bfd_set_error (bfd_error_wrong_format); |
| |
| fail: |
| if (preserve.marker != NULL) |
| bfd_preserve_restore (abfd, &preserve); |
| return NULL; |
| } |
| |
| const bfd_target * |
| bfd_mach_o_core_p (bfd *abfd) |
| { |
| struct bfd_preserve preserve; |
| bfd_mach_o_header header; |
| |
| preserve.marker = NULL; |
| if (bfd_mach_o_read_header (abfd, &header) != 0) |
| goto wrong; |
| |
| if (! (header.byteorder == BFD_ENDIAN_BIG |
| || header.byteorder == BFD_ENDIAN_LITTLE)) |
| { |
| fprintf (stderr, "unknown header byte-order value 0x%lx\n", |
| (long) header.byteorder); |
| abort (); |
| } |
| |
| if (! ((header.byteorder == BFD_ENDIAN_BIG |
| && abfd->xvec->byteorder == BFD_ENDIAN_BIG |
| && abfd->xvec->header_byteorder == BFD_ENDIAN_BIG) |
| || (header.byteorder == BFD_ENDIAN_LITTLE |
| && abfd->xvec->byteorder == BFD_ENDIAN_LITTLE |
| && abfd->xvec->header_byteorder == BFD_ENDIAN_LITTLE))) |
| goto wrong; |
| |
| if (header.filetype != BFD_MACH_O_MH_CORE) |
| goto wrong; |
| |
| preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct)); |
| if (preserve.marker == NULL |
| || !bfd_preserve_save (abfd, &preserve)) |
| goto fail; |
| |
| if (bfd_mach_o_scan (abfd, &header, |
| (bfd_mach_o_data_struct *) preserve.marker) != 0) |
| goto wrong; |
| |
| bfd_preserve_finish (abfd, &preserve); |
| return abfd->xvec; |
| |
| wrong: |
| bfd_set_error (bfd_error_wrong_format); |
| |
| fail: |
| if (preserve.marker != NULL) |
| bfd_preserve_restore (abfd, &preserve); |
| return NULL; |
| } |
| |
| typedef struct mach_o_fat_archentry |
| { |
| unsigned long cputype; |
| unsigned long cpusubtype; |
| unsigned long offset; |
| unsigned long size; |
| unsigned long align; |
| bfd *abfd; |
| } mach_o_fat_archentry; |
| |
| typedef struct mach_o_fat_data_struct |
| { |
| unsigned long magic; |
| unsigned long nfat_arch; |
| mach_o_fat_archentry *archentries; |
| } mach_o_fat_data_struct; |
| |
| const bfd_target * |
| bfd_mach_o_archive_p (bfd *abfd) |
| { |
| mach_o_fat_data_struct *adata = NULL; |
| unsigned char buf[20]; |
| unsigned long i; |
| |
| bfd_seek (abfd, 0, SEEK_SET); |
| if (bfd_bread ((PTR) buf, 8, abfd) != 8) |
| goto error; |
| |
| adata = bfd_alloc (abfd, sizeof (mach_o_fat_data_struct)); |
| if (adata == NULL) |
| goto error; |
| |
| adata->magic = bfd_getb32 (buf); |
| adata->nfat_arch = bfd_getb32 (buf + 4); |
| if (adata->magic != 0xcafebabe) |
| goto error; |
| |
| adata->archentries = |
| bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry)); |
| if (adata->archentries == NULL) |
| goto error; |
| |
| for (i = 0; i < adata->nfat_arch; i++) |
| { |
| bfd_seek (abfd, 8 + 20 * i, SEEK_SET); |
| |
| if (bfd_bread ((PTR) buf, 20, abfd) != 20) |
| goto error; |
| adata->archentries[i].cputype = bfd_getb32 (buf); |
| adata->archentries[i].cpusubtype = bfd_getb32 (buf + 4); |
| adata->archentries[i].offset = bfd_getb32 (buf + 8); |
| adata->archentries[i].size = bfd_getb32 (buf + 12); |
| adata->archentries[i].align = bfd_getb32 (buf + 16); |
| adata->archentries[i].abfd = NULL; |
| } |
| |
| abfd->tdata.mach_o_fat_data = adata; |
| return abfd->xvec; |
| |
| error: |
| if (adata != NULL) |
| bfd_release (abfd, adata); |
| bfd_set_error (bfd_error_wrong_format); |
| return NULL; |
| } |
| |
| bfd * |
| bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev) |
| { |
| mach_o_fat_data_struct *adata; |
| mach_o_fat_archentry *entry = NULL; |
| unsigned long i; |
| |
| adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data; |
| BFD_ASSERT (adata != NULL); |
| |
| /* Find index of previous entry. */ |
| if (prev == NULL) |
| i = 0; /* Start at first one. */ |
| else |
| { |
| for (i = 0; i < adata->nfat_arch; i++) |
| { |
| if (adata->archentries[i].abfd == prev) |
| break; |
| } |
| |
| if (i == adata->nfat_arch) |
| { |
| /* Not found. */ |
| bfd_set_error (bfd_error_bad_value); |
| return NULL; |
| } |
| i++; /* Get next entry. */ |
| } |
| |
| if (i >= adata->nfat_arch) |
| { |
| bfd_set_error (bfd_error_no_more_archived_files); |
| return NULL; |
| } |
| |
| entry = &adata->archentries[i]; |
| if (entry->abfd == NULL) |
| { |
| bfd *nbfd = _bfd_new_bfd_contained_in (archive); |
| char *s = NULL; |
| |
| if (nbfd == NULL) |
| return NULL; |
| |
| nbfd->origin = entry->offset; |
| s = bfd_malloc (strlen (archive->filename) + 1); |
| if (s == NULL) |
| return NULL; |
| strcpy (s, archive->filename); |
| nbfd->filename = s; |
| nbfd->iostream = NULL; |
| entry->abfd = nbfd; |
| } |
| |
| return entry->abfd; |
| } |
| |
| int |
| bfd_mach_o_lookup_section (bfd *abfd, |
| asection *section, |
| bfd_mach_o_load_command **mcommand, |
| bfd_mach_o_section **msection) |
| { |
| struct mach_o_data_struct *md = abfd->tdata.mach_o_data; |
| unsigned int i, j, num; |
| |
| bfd_mach_o_load_command *ncmd = NULL; |
| bfd_mach_o_section *nsect = NULL; |
| |
| BFD_ASSERT (mcommand != NULL); |
| BFD_ASSERT (msection != NULL); |
| |
| num = 0; |
| for (i = 0; i < md->header.ncmds; i++) |
| { |
| struct bfd_mach_o_load_command *cmd = &md->commands[i]; |
| struct bfd_mach_o_segment_command *seg = NULL; |
| |
| if (cmd->type != BFD_MACH_O_LC_SEGMENT) |
| continue; |
| seg = &cmd->command.segment; |
| |
| if (seg->segment == section) |
| { |
| if (num == 0) |
| ncmd = cmd; |
| num++; |
| } |
| |
| for (j = 0; j < seg->nsects; j++) |
| { |
| struct bfd_mach_o_section *sect = &seg->sections[j]; |
| |
| if (sect->bfdsection == section) |
| { |
| if (num == 0) |
| nsect = sect; |
| num++; |
| } |
| } |
| } |
| |
| *mcommand = ncmd; |
| *msection = nsect; |
| return num; |
| } |
| |
| int |
| bfd_mach_o_lookup_command (bfd *abfd, |
| bfd_mach_o_load_command_type type, |
| bfd_mach_o_load_command **mcommand) |
| { |
| struct mach_o_data_struct *md = NULL; |
| bfd_mach_o_load_command *ncmd = NULL; |
| unsigned int i, num; |
| |
| md = abfd->tdata.mach_o_data; |
| |
| BFD_ASSERT (md != NULL); |
| BFD_ASSERT (mcommand != NULL); |
| |
| num = 0; |
| for (i = 0; i < md->header.ncmds; i++) |
| { |
| struct bfd_mach_o_load_command *cmd = &md->commands[i]; |
| |
| if (cmd->type != type) |
| continue; |
| |
| if (num == 0) |
| ncmd = cmd; |
| num++; |
| } |
| |
| *mcommand = ncmd; |
| return num; |
| } |
| |
| unsigned long |
| bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type type) |
| { |
| switch (type) |
| { |
| case BFD_MACH_O_CPU_TYPE_MC680x0: |
| return 0x04000000; |
| case BFD_MACH_O_CPU_TYPE_MC88000: |
| return 0xffffe000; |
| case BFD_MACH_O_CPU_TYPE_POWERPC: |
| return 0xc0000000; |
| case BFD_MACH_O_CPU_TYPE_I386: |
| return 0xc0000000; |
| case BFD_MACH_O_CPU_TYPE_SPARC: |
| return 0xf0000000; |
| case BFD_MACH_O_CPU_TYPE_I860: |
| return 0; |
| case BFD_MACH_O_CPU_TYPE_HPPA: |
| return 0xc0000000 - 0x04000000; |
| default: |
| return 0; |
| } |
| } |
| |
| int |
| bfd_mach_o_core_fetch_environment (bfd *abfd, |
| unsigned char **rbuf, |
| unsigned int *rlen) |
| { |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype); |
| unsigned int i = 0; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| bfd_mach_o_load_command *cur = &mdata->commands[i]; |
| bfd_mach_o_segment_command *seg = NULL; |
| |
| if (cur->type != BFD_MACH_O_LC_SEGMENT) |
| continue; |
| |
| seg = &cur->command.segment; |
| |
| if ((seg->vmaddr + seg->vmsize) == stackaddr) |
| { |
| unsigned long start = seg->fileoff; |
| unsigned long end = seg->fileoff + seg->filesize; |
| unsigned char *buf = bfd_malloc (1024); |
| unsigned long size = 1024; |
| |
| for (;;) |
| { |
| bfd_size_type nread = 0; |
| unsigned long offset; |
| int found_nonnull = 0; |
| |
| if (size > (end - start)) |
| size = (end - start); |
| |
| buf = bfd_realloc (buf, size); |
| |
| bfd_seek (abfd, end - size, SEEK_SET); |
| nread = bfd_bread (buf, size, abfd); |
| |
| if (nread != size) |
| return -1; |
| |
| for (offset = 4; offset <= size; offset += 4) |
| { |
| unsigned long val; |
| |
| val = *((unsigned long *) (buf + size - offset)); |
| if (! found_nonnull) |
| { |
| if (val != 0) |
| found_nonnull = 1; |
| } |
| else if (val == 0x0) |
| { |
| unsigned long bottom; |
| unsigned long top; |
| |
| bottom = seg->fileoff + seg->filesize - offset; |
| top = seg->fileoff + seg->filesize - 4; |
| *rbuf = bfd_malloc (top - bottom); |
| *rlen = top - bottom; |
| |
| memcpy (*rbuf, buf + size - *rlen, *rlen); |
| return 0; |
| } |
| } |
| |
| if (size == (end - start)) |
| break; |
| |
| size *= 2; |
| } |
| } |
| } |
| |
| return -1; |
| } |
| |
| char * |
| bfd_mach_o_core_file_failing_command (bfd *abfd) |
| { |
| unsigned char *buf = NULL; |
| unsigned int len = 0; |
| int ret = -1; |
| |
| ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len); |
| if (ret < 0) |
| return NULL; |
| |
| return (char *) buf; |
| } |
| |
| int |
| bfd_mach_o_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) |
| { |
| return 0; |
| } |
| |
| bfd_boolean |
| bfd_mach_o_core_file_matches_executable_p (bfd *core_bfd ATTRIBUTE_UNUSED, |
| bfd *exec_bfd ATTRIBUTE_UNUSED) |
| { |
| return TRUE; |
| } |
| |
| #define TARGET_NAME mach_o_be_vec |
| #define TARGET_STRING "mach-o-be" |
| #define TARGET_BIG_ENDIAN 1 |
| #define TARGET_ARCHIVE 0 |
| |
| #include "mach-o-target.c" |
| |
| #undef TARGET_NAME |
| #undef TARGET_STRING |
| #undef TARGET_BIG_ENDIAN |
| #undef TARGET_ARCHIVE |
| |
| #define TARGET_NAME mach_o_le_vec |
| #define TARGET_STRING "mach-o-le" |
| #define TARGET_BIG_ENDIAN 0 |
| #define TARGET_ARCHIVE 0 |
| |
| #include "mach-o-target.c" |
| |
| #undef TARGET_NAME |
| #undef TARGET_STRING |
| #undef TARGET_BIG_ENDIAN |
| #undef TARGET_ARCHIVE |
| |
| #define TARGET_NAME mach_o_fat_vec |
| #define TARGET_STRING "mach-o-fat" |
| #define TARGET_BIG_ENDIAN 1 |
| #define TARGET_ARCHIVE 1 |
| |
| #include "mach-o-target.c" |
| |
| #undef TARGET_NAME |
| #undef TARGET_STRING |
| #undef TARGET_BIG_ENDIAN |
| #undef TARGET_ARCHIVE |