| /* Mach-O support for BFD. |
| Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 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 "aout/stab_gnu.h" |
| #include <ctype.h> |
| |
| #define bfd_mach_o_object_p bfd_mach_o_gen_object_p |
| #define bfd_mach_o_core_p bfd_mach_o_gen_core_p |
| #define bfd_mach_o_mkobject bfd_false |
| |
| #define FILE_ALIGN(off, algn) \ |
| (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1 << (algn))) |
| |
| unsigned int |
| bfd_mach_o_version (bfd *abfd) |
| { |
| bfd_mach_o_data_struct *mdata = NULL; |
| |
| BFD_ASSERT (bfd_mach_o_valid (abfd)); |
| mdata = abfd->tdata.mach_o_data; |
| |
| return mdata->header.version; |
| } |
| |
| bfd_boolean |
| bfd_mach_o_valid (bfd *abfd) |
| { |
| if (abfd == NULL || abfd->xvec == NULL) |
| return FALSE; |
| |
| if (abfd->xvec->flavour != bfd_target_mach_o_flavour) |
| return FALSE; |
| |
| if (abfd->tdata.mach_o_data == NULL) |
| return FALSE; |
| return TRUE; |
| } |
| |
| static INLINE bfd_boolean |
| mach_o_wide_p (bfd_mach_o_header *header) |
| { |
| switch (header->version) |
| { |
| case 1: |
| return FALSE; |
| case 2: |
| return TRUE; |
| default: |
| BFD_FAIL (); |
| return FALSE; |
| } |
| } |
| |
| static INLINE bfd_boolean |
| bfd_mach_o_wide_p (bfd *abfd) |
| { |
| return mach_o_wide_p (&abfd->tdata.mach_o_data->header); |
| } |
| |
| /* Tables to translate well known Mach-O segment/section names to bfd |
| names. Use of canonical names (such as .text or .debug_frame) is required |
| by gdb. */ |
| |
| struct mach_o_section_name_xlat |
| { |
| const char *bfd_name; |
| const char *mach_o_name; |
| }; |
| |
| static const struct mach_o_section_name_xlat dwarf_section_names_xlat[] = |
| { |
| { ".debug_frame", "__debug_frame" }, |
| { ".debug_info", "__debug_info" }, |
| { ".debug_abbrev", "__debug_abbrev" }, |
| { ".debug_aranges", "__debug_aranges" }, |
| { ".debug_macinfo", "__debug_macinfo" }, |
| { ".debug_line", "__debug_line" }, |
| { ".debug_loc", "__debug_loc" }, |
| { ".debug_pubnames", "__debug_pubnames" }, |
| { ".debug_pubtypes", "__debug_pubtypes" }, |
| { ".debug_str", "__debug_str" }, |
| { ".debug_ranges", "__debug_ranges" }, |
| { NULL, NULL} |
| }; |
| |
| static const struct mach_o_section_name_xlat text_section_names_xlat[] = |
| { |
| { ".text", "__text" }, |
| { ".cstring", "__cstring" }, |
| { ".eh_frame", "__eh_frame" }, |
| { NULL, NULL} |
| }; |
| |
| static const struct mach_o_section_name_xlat data_section_names_xlat[] = |
| { |
| { ".data", "__data" }, |
| { ".bss", "__bss" }, |
| { NULL, NULL} |
| }; |
| |
| struct mach_o_segment_name_xlat |
| { |
| const char *segname; |
| const struct mach_o_section_name_xlat *sections; |
| }; |
| |
| static const struct mach_o_segment_name_xlat segsec_names_xlat[] = |
| { |
| { "__DWARF", dwarf_section_names_xlat }, |
| { "__TEXT", text_section_names_xlat }, |
| { "__DATA", data_section_names_xlat }, |
| { NULL, NULL } |
| }; |
| |
| |
| /* Mach-O to bfd names. */ |
| |
| static char * |
| bfd_mach_o_convert_section_name_to_bfd (bfd *abfd, bfd_mach_o_section *section) |
| { |
| const struct mach_o_segment_name_xlat *seg; |
| char *res; |
| unsigned int len; |
| const char *pfx = ""; |
| |
| for (seg = segsec_names_xlat; seg->segname; seg++) |
| { |
| if (strcmp (seg->segname, section->segname) == 0) |
| { |
| const struct mach_o_section_name_xlat *sec; |
| |
| for (sec = seg->sections; sec->mach_o_name; sec++) |
| { |
| if (strcmp (sec->mach_o_name, section->sectname) == 0) |
| { |
| len = strlen (sec->bfd_name); |
| res = bfd_alloc (abfd, len + 1); |
| |
| if (res == NULL) |
| return NULL; |
| strcpy (res, sec->bfd_name); |
| return res; |
| } |
| } |
| } |
| } |
| |
| len = strlen (section->segname) + 1 |
| + strlen (section->sectname) + 1; |
| |
| /* Put "LC_SEGMENT." prefix if the segment name is weird (ie doesn't start |
| with an underscore. */ |
| if (section->segname[0] != '_') |
| { |
| static const char seg_pfx[] = "LC_SEGMENT."; |
| |
| pfx = seg_pfx; |
| len += sizeof (seg_pfx) - 1; |
| } |
| |
| res = bfd_alloc (abfd, len); |
| if (res == NULL) |
| return NULL; |
| snprintf (res, len, "%s%s.%s", pfx, section->segname, section->sectname); |
| return res; |
| } |
| |
| /* Convert a bfd section name to a Mach-O segment + section name. */ |
| |
| static void |
| bfd_mach_o_convert_section_name_to_mach_o (bfd *abfd ATTRIBUTE_UNUSED, |
| asection *sect, |
| bfd_mach_o_section *section) |
| { |
| const struct mach_o_segment_name_xlat *seg; |
| const char *name = bfd_get_section_name (abfd, sect); |
| const char *dot; |
| unsigned int len; |
| unsigned int seglen; |
| unsigned int seclen; |
| |
| /* List of well known names. They all start with a dot. */ |
| if (name[0] == '.') |
| for (seg = segsec_names_xlat; seg->segname; seg++) |
| { |
| const struct mach_o_section_name_xlat *sec; |
| |
| for (sec = seg->sections; sec->mach_o_name; sec++) |
| { |
| if (strcmp (sec->bfd_name, name) == 0) |
| { |
| strcpy (section->segname, seg->segname); |
| strcpy (section->sectname, sec->mach_o_name); |
| return; |
| } |
| } |
| } |
| |
| /* Strip LC_SEGMENT. prefix. */ |
| if (strncmp (name, "LC_SEGMENT.", 11) == 0) |
| name += 11; |
| |
| /* Find a dot. */ |
| dot = strchr (name, '.'); |
| len = strlen (name); |
| |
| /* Try to split name into segment and section names. */ |
| if (dot && dot != name) |
| { |
| seglen = dot - name; |
| seclen = len - (dot + 1 - name); |
| |
| if (seglen < 16 && seclen < 16) |
| { |
| memcpy (section->segname, name, seglen); |
| section->segname[seglen] = 0; |
| memcpy (section->sectname, dot + 1, seclen); |
| section->sectname[seclen] = 0; |
| return; |
| } |
| } |
| |
| if (len > 16) |
| len = 16; |
| memcpy (section->segname, name, len); |
| section->segname[len] = 0; |
| memcpy (section->sectname, name, len); |
| section->sectname[len] = 0; |
| } |
| |
| /* Copy any private info we understand from the input symbol |
| to the output symbol. */ |
| |
| 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. */ |
| |
| 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. */ |
| |
| bfd_boolean |
| bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
| { |
| if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour |
| || bfd_get_flavour (obfd) != bfd_target_mach_o_flavour) |
| return TRUE; |
| |
| BFD_ASSERT (bfd_mach_o_valid (ibfd)); |
| BFD_ASSERT (bfd_mach_o_valid (obfd)); |
| |
| /* FIXME: copy commands. */ |
| |
| return TRUE; |
| } |
| |
| /* Count the total number of symbols. Traverse all sections. */ |
| |
| 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; |
| } |
| |
| 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 *)); |
| } |
| |
| 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].symbol; |
| } |
| } |
| } |
| |
| *csym++ = NULL; |
| |
| return nsyms; |
| } |
| |
| void |
| bfd_mach_o_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
| asymbol *symbol, |
| symbol_info *ret) |
| { |
| bfd_symbol_info (symbol, ret); |
| } |
| |
| void |
| bfd_mach_o_print_symbol (bfd *abfd, |
| PTR afile, |
| asymbol *symbol, |
| bfd_print_symbol_type how) |
| { |
| FILE *file = (FILE *) afile; |
| const char *name; |
| bfd_mach_o_asymbol *asym = (bfd_mach_o_asymbol *)symbol; |
| |
| switch (how) |
| { |
| case bfd_print_symbol_name: |
| fprintf (file, "%s", symbol->name); |
| break; |
| default: |
| bfd_print_symbol_vandf (abfd, (PTR) file, symbol); |
| if (asym->n_type & BFD_MACH_O_N_STAB) |
| name = bfd_get_stab_name (asym->n_type); |
| else |
| switch (asym->n_type & BFD_MACH_O_N_TYPE) |
| { |
| case BFD_MACH_O_N_UNDF: |
| name = "UND"; |
| break; |
| case BFD_MACH_O_N_ABS: |
| name = "ABS"; |
| break; |
| case BFD_MACH_O_N_INDR: |
| name = "INDR"; |
| break; |
| case BFD_MACH_O_N_PBUD: |
| name = "PBUD"; |
| break; |
| case BFD_MACH_O_N_SECT: |
| name = "SECT"; |
| break; |
| default: |
| name = "???"; |
| break; |
| } |
| if (name == NULL) |
| name = ""; |
| fprintf (file, " %02x %-6s %02x %04x", |
| asym->n_type, name, asym->n_sect, asym->n_desc); |
| if ((asym->n_type & BFD_MACH_O_N_STAB) == 0 |
| && (asym->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_SECT) |
| fprintf (file, " %-5s", symbol->section->name); |
| fprintf (file, " %s", 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; |
| *subtype = bfd_mach_i386_i386; |
| break; |
| case BFD_MACH_O_CPU_TYPE_X86_64: |
| *type = bfd_arch_i386; |
| *subtype = bfd_mach_x86_64; |
| 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; |
| *subtype = bfd_mach_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; |
| *subtype = bfd_mach_ppc; |
| break; |
| case BFD_MACH_O_CPU_TYPE_POWERPC_64: |
| *type = bfd_arch_powerpc; |
| *subtype = bfd_mach_ppc64; |
| break; |
| default: |
| *type = bfd_arch_unknown; |
| break; |
| } |
| } |
| |
| static bfd_boolean |
| bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header) |
| { |
| unsigned char buf[32]; |
| unsigned int size; |
| |
| size = mach_o_wide_p (header) ? |
| BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE; |
| |
| 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); |
| |
| if (mach_o_wide_p (header)) |
| bfd_h_put_32 (abfd, header->reserved, buf + 28); |
| |
| if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| || bfd_bwrite ((PTR) buf, size, abfd) != size) |
| return FALSE; |
| |
| return TRUE; |
| } |
| |
| 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]; |
| unsigned int 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); |
| |
| if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0 |
| || bfd_bwrite ((PTR) buf, 8, abfd) != 8) |
| return -1; |
| |
| offset += cmd->flavours[i].size + 8; |
| } |
| |
| return 0; |
| } |
| |
| long |
| bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, |
| asection *asect) |
| { |
| return (asect->reloc_count + 1) * sizeof (arelent *); |
| } |
| |
| long |
| bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect, |
| arelent **rels, asymbol **syms) |
| { |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd); |
| unsigned long i; |
| arelent *res; |
| char *native_relocs; |
| bfd_size_type native_size; |
| |
| if (asect->reloc_count == 0) |
| return 0; |
| |
| /* No need to go further if we don't know how to read relocs. */ |
| if (bed->_bfd_mach_o_swap_reloc_in == NULL) |
| return 0; |
| |
| /* Allocate and read relocs. */ |
| native_size = asect->reloc_count * BFD_MACH_O_RELENT_SIZE; |
| native_relocs = bfd_malloc (native_size); |
| if (native_relocs == NULL) |
| return -1; |
| |
| if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0 |
| || bfd_bread (native_relocs, native_size, abfd) != native_size) |
| { |
| free (native_relocs); |
| return -1; |
| } |
| |
| res = bfd_malloc (asect->reloc_count * sizeof (arelent)); |
| if (res == NULL) |
| { |
| free (native_relocs); |
| return -1; |
| } |
| |
| for (i = 0; i < asect->reloc_count; i++) |
| { |
| char *buf = native_relocs + BFD_MACH_O_RELENT_SIZE * i; |
| bfd_mach_o_reloc_info reloc; |
| bfd_vma addr; |
| bfd_vma symnum; |
| asymbol **sym; |
| |
| addr = bfd_get_32 (abfd, buf + 0); |
| symnum = bfd_get_32 (abfd, buf + 4); |
| |
| if (addr & BFD_MACH_O_SR_SCATTERED) |
| { |
| unsigned int j; |
| |
| /* Scattered relocation. |
| Extract section and offset from r_value. */ |
| res[i].sym_ptr_ptr = NULL; |
| res[i].addend = 0; |
| for (j = 0; j < mdata->nsects; j++) |
| { |
| bfd_mach_o_section *sect = mdata->sections[j]; |
| if (symnum >= sect->addr && symnum < sect->addr + sect->size) |
| { |
| res[i].sym_ptr_ptr = sect->bfdsection->symbol_ptr_ptr; |
| res[i].addend = symnum - sect->addr; |
| break; |
| } |
| } |
| res[i].address = BFD_MACH_O_GET_SR_ADDRESS (addr); |
| reloc.r_type = BFD_MACH_O_GET_SR_TYPE (addr); |
| reloc.r_length = BFD_MACH_O_GET_SR_LENGTH (addr); |
| reloc.r_pcrel = addr & BFD_MACH_O_SR_PCREL; |
| reloc.r_scattered = 1; |
| } |
| else |
| { |
| unsigned int num = BFD_MACH_O_GET_R_SYMBOLNUM (symnum); |
| res[i].addend = 0; |
| res[i].address = addr; |
| if (symnum & BFD_MACH_O_R_EXTERN) |
| sym = syms + num; |
| else |
| { |
| BFD_ASSERT (num != 0); |
| BFD_ASSERT (num <= mdata->nsects); |
| sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr; |
| } |
| res[i].sym_ptr_ptr = sym; |
| reloc.r_type = BFD_MACH_O_GET_R_TYPE (symnum); |
| reloc.r_length = BFD_MACH_O_GET_R_LENGTH (symnum); |
| reloc.r_pcrel = (symnum & BFD_MACH_O_R_PCREL) ? 1 : 0; |
| reloc.r_scattered = 0; |
| } |
| |
| if (!(*bed->_bfd_mach_o_swap_reloc_in)(&res[i], &reloc)) |
| { |
| free (res); |
| free (native_relocs); |
| return -1; |
| } |
| rels[i] = &res[i]; |
| } |
| asect->relocation = res; |
| free (native_relocs); |
| return i; |
| } |
| |
| static bfd_boolean |
| bfd_mach_o_scan_write_relocs (bfd *abfd, bfd_mach_o_section *section) |
| { |
| bfd_mach_o_data_struct *mdata = bfd_get_mach_o_data (abfd); |
| unsigned int i; |
| arelent **entries; |
| asection *sec; |
| bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd); |
| |
| sec = section->bfdsection; |
| if (sec->reloc_count == 0) |
| return TRUE; |
| |
| if (bed->_bfd_mach_o_swap_reloc_out == NULL) |
| return TRUE; |
| |
| /* Allocate relocation room. */ |
| mdata->filelen = FILE_ALIGN(mdata->filelen, 2); |
| section->nreloc = sec->reloc_count; |
| sec->rel_filepos = mdata->filelen; |
| section->reloff = sec->rel_filepos; |
| mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE; |
| |
| if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0) |
| return FALSE; |
| |
| /* Convert and write. */ |
| entries = section->bfdsection->orelocation; |
| for (i = 0; i < section->nreloc; i++) |
| { |
| arelent *rel = entries[i]; |
| char buf[8]; |
| bfd_mach_o_reloc_info info, *pinfo = &info; |
| |
| /* Convert relocation to an intermediate representation. */ |
| if (!(*bed->_bfd_mach_o_swap_reloc_out) (rel, pinfo)) |
| return FALSE; |
| |
| /* Lower the relocation info. */ |
| if (pinfo->r_scattered) |
| { |
| unsigned long v; |
| |
| v = BFD_MACH_O_SR_SCATTERED |
| | (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0) |
| | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length) |
| | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type) |
| | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address); |
| bfd_put_32 (abfd, v, buf); |
| bfd_put_32 (abfd, pinfo->r_value, buf + 4); |
| } |
| else |
| { |
| unsigned long v; |
| |
| bfd_put_32 (abfd, pinfo->r_address, buf); |
| v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value) |
| | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0) |
| | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length) |
| | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0) |
| | BFD_MACH_O_SET_R_TYPE (pinfo->r_type); |
| bfd_put_32 (abfd, v, buf + 4); |
| } |
| |
| if (bfd_bwrite ((PTR) buf, BFD_MACH_O_RELENT_SIZE, abfd) |
| != BFD_MACH_O_RELENT_SIZE) |
| return FALSE; |
| } |
| return TRUE; |
| } |
| |
| static int |
| bfd_mach_o_scan_write_section_32 (bfd *abfd, bfd_mach_o_section *section) |
| { |
| unsigned char buf[BFD_MACH_O_SECTION_SIZE]; |
| |
| 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); |
| |
| if (bfd_bwrite ((PTR) buf, BFD_MACH_O_SECTION_SIZE, abfd) |
| != BFD_MACH_O_SECTION_SIZE) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_write_section_64 (bfd *abfd, bfd_mach_o_section *section) |
| { |
| unsigned char buf[BFD_MACH_O_SECTION_64_SIZE]; |
| |
| memcpy (buf, section->sectname, 16); |
| memcpy (buf + 16, section->segname, 16); |
| bfd_h_put_64 (abfd, section->addr, buf + 32); |
| bfd_h_put_64 (abfd, section->size, buf + 40); |
| bfd_h_put_32 (abfd, section->offset, buf + 48); |
| bfd_h_put_32 (abfd, section->align, buf + 52); |
| bfd_h_put_32 (abfd, section->reloff, buf + 56); |
| bfd_h_put_32 (abfd, section->nreloc, buf + 60); |
| bfd_h_put_32 (abfd, section->flags, buf + 64); |
| bfd_h_put_32 (abfd, section->reserved1, buf + 68); |
| bfd_h_put_32 (abfd, section->reserved2, buf + 72); |
| bfd_h_put_32 (abfd, section->reserved3, buf + 76); |
| |
| if (bfd_bwrite ((PTR) buf, BFD_MACH_O_SECTION_64_SIZE, abfd) |
| != BFD_MACH_O_SECTION_64_SIZE) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| unsigned char buf[BFD_MACH_O_LC_SEGMENT_SIZE]; |
| bfd_mach_o_segment_command *seg = &command->command.segment; |
| unsigned long i; |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT); |
| |
| for (i = 0; i < seg->nsects; i++) |
| if (!bfd_mach_o_scan_write_relocs (abfd, &seg->sections[i])) |
| return -1; |
| |
| 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, seg->maxprot, buf + 32); |
| bfd_h_put_32 (abfd, seg->initprot, buf + 36); |
| bfd_h_put_32 (abfd, seg->nsects, buf + 40); |
| bfd_h_put_32 (abfd, seg->flags, buf + 44); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || (bfd_bwrite ((PTR) buf, BFD_MACH_O_LC_SEGMENT_SIZE - 8, abfd) |
| != BFD_MACH_O_LC_SEGMENT_SIZE - 8)) |
| return -1; |
| |
| for (i = 0; i < seg->nsects; i++) |
| if (bfd_mach_o_scan_write_section_32 (abfd, &seg->sections[i])) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| unsigned char buf[BFD_MACH_O_LC_SEGMENT_64_SIZE]; |
| bfd_mach_o_segment_command *seg = &command->command.segment; |
| unsigned long i; |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64); |
| |
| for (i = 0; i < seg->nsects; i++) |
| if (!bfd_mach_o_scan_write_relocs (abfd, &seg->sections[i])) |
| return -1; |
| |
| memcpy (buf, seg->segname, 16); |
| bfd_h_put_64 (abfd, seg->vmaddr, buf + 16); |
| bfd_h_put_64 (abfd, seg->vmsize, buf + 24); |
| bfd_h_put_64 (abfd, seg->fileoff, buf + 32); |
| bfd_h_put_64 (abfd, seg->filesize, buf + 40); |
| bfd_h_put_32 (abfd, seg->maxprot, buf + 48); |
| bfd_h_put_32 (abfd, seg->initprot, buf + 52); |
| bfd_h_put_32 (abfd, seg->nsects, buf + 56); |
| bfd_h_put_32 (abfd, seg->flags, buf + 60); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || (bfd_bwrite ((PTR) buf, BFD_MACH_O_LC_SEGMENT_64_SIZE - 8, abfd) |
| != BFD_MACH_O_LC_SEGMENT_64_SIZE - 8)) |
| return -1; |
| |
| for (i = 0; i < seg->nsects; i++) |
| if (bfd_mach_o_scan_write_section_64 (abfd, &seg->sections[i])) |
| return -1; |
| |
| return 0; |
| } |
| |
| static bfd_boolean |
| bfd_mach_o_scan_write_symtab (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_data_struct *mdata = bfd_get_mach_o_data (abfd); |
| bfd_mach_o_symtab_command *sym = &command->command.symtab; |
| unsigned char buf[16]; |
| unsigned long i; |
| unsigned int wide = bfd_mach_o_wide_p (abfd); |
| unsigned int symlen = wide ? 16 : 12; |
| struct bfd_strtab_hash *strtab; |
| asymbol **symbols = bfd_get_outsymbols (abfd); |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB); |
| |
| /* Write the symbols first. */ |
| mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2); |
| sym->symoff = mdata->filelen; |
| if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0) |
| return FALSE; |
| |
| sym->nsyms = bfd_get_symcount (abfd); |
| mdata->filelen += sym->nsyms * symlen; |
| |
| strtab = _bfd_stringtab_init (); |
| if (strtab == NULL) |
| return FALSE; |
| |
| for (i = 0; i < sym->nsyms; i++) |
| { |
| unsigned char buf[16]; |
| bfd_size_type index; |
| bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i]; |
| |
| /* Compute name index. */ |
| /* An index of 0 always means the empty string. */ |
| if (s->symbol.name == 0 || s->symbol.name[0] == '\0') |
| index = 0; |
| else |
| { |
| index = _bfd_stringtab_add (strtab, s->symbol.name, TRUE, FALSE); |
| if (index == (bfd_size_type) -1) |
| goto err; |
| } |
| bfd_h_put_32 (abfd, index, buf); |
| bfd_h_put_8 (abfd, s->n_type, buf + 4); |
| bfd_h_put_8 (abfd, s->n_sect, buf + 5); |
| bfd_h_put_16 (abfd, s->n_desc, buf + 6); |
| if (wide) |
| bfd_h_put_64 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8); |
| else |
| bfd_h_put_32 (abfd, s->symbol.section->vma + s->symbol.value, buf + 8); |
| |
| if (bfd_bwrite ((PTR) buf, symlen, abfd) != symlen) |
| goto err; |
| } |
| sym->strsize = _bfd_stringtab_size (strtab); |
| sym->stroff = mdata->filelen; |
| mdata->filelen += sym->strsize; |
| |
| if (_bfd_stringtab_emit (abfd, strtab) != TRUE) |
| goto err; |
| _bfd_stringtab_free (strtab); |
| |
| /* The command. */ |
| bfd_h_put_32 (abfd, sym->symoff, buf); |
| bfd_h_put_32 (abfd, sym->nsyms, buf + 4); |
| bfd_h_put_32 (abfd, sym->stroff, buf + 8); |
| bfd_h_put_32 (abfd, sym->strsize, buf + 12); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || bfd_bwrite ((PTR) buf, 16, abfd) != 16) |
| return FALSE; |
| |
| return TRUE; |
| |
| err: |
| _bfd_stringtab_free (strtab); |
| return FALSE; |
| } |
| |
| /* Process the symbols and generate Mach-O specific fields. |
| Number them. */ |
| |
| static bfd_boolean |
| bfd_mach_o_mangle_symbols (bfd *abfd) |
| { |
| unsigned long i; |
| asymbol **symbols = bfd_get_outsymbols (abfd); |
| |
| for (i = 0; i < bfd_get_symcount (abfd); i++) |
| { |
| bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i]; |
| |
| if (s->n_type == BFD_MACH_O_N_UNDF && !(s->symbol.flags & BSF_DEBUGGING)) |
| { |
| /* As genuine Mach-O symbols type shouldn't be N_UNDF (undefined |
| symbols should be N_UNDEF | N_EXT), we suppose the back-end |
| values haven't been set. */ |
| if (s->symbol.section == bfd_abs_section_ptr) |
| s->n_type = BFD_MACH_O_N_ABS; |
| else if (s->symbol.section == bfd_und_section_ptr) |
| { |
| s->n_type = BFD_MACH_O_N_UNDF; |
| if (s->symbol.flags & BSF_WEAK) |
| s->n_desc |= BFD_MACH_O_N_WEAK_REF; |
| } |
| else if (s->symbol.section == bfd_com_section_ptr) |
| s->n_type = BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT; |
| else |
| s->n_type = BFD_MACH_O_N_SECT; |
| |
| if (s->symbol.flags & BSF_GLOBAL) |
| s->n_type |= BFD_MACH_O_N_EXT; |
| } |
| |
| /* Compute section index. */ |
| if (s->symbol.section != bfd_abs_section_ptr |
| && s->symbol.section != bfd_und_section_ptr |
| && s->symbol.section != bfd_com_section_ptr) |
| s->n_sect = s->symbol.section->target_index; |
| |
| /* Number symbols. */ |
| s->symbol.udata.i = i; |
| } |
| return TRUE; |
| } |
| |
| bfd_boolean |
| bfd_mach_o_write_contents (bfd *abfd) |
| { |
| unsigned int i; |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| |
| if (mdata->header.ncmds == 0) |
| if (!bfd_mach_o_build_commands (abfd)) |
| return FALSE; |
| |
| /* Now write header information. */ |
| if (mdata->header.filetype == 0) |
| { |
| if (abfd->flags & EXEC_P) |
| mdata->header.filetype = BFD_MACH_O_MH_EXECUTE; |
| else if (abfd->flags & DYNAMIC) |
| mdata->header.filetype = BFD_MACH_O_MH_DYLIB; |
| else |
| mdata->header.filetype = BFD_MACH_O_MH_OBJECT; |
| } |
| if (!bfd_mach_o_write_header (abfd, &mdata->header)) |
| return FALSE; |
| |
| /* Assign a number to each symbols. */ |
| if (!bfd_mach_o_mangle_symbols (abfd)) |
| 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 | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0); |
| |
| bfd_h_put_32 (abfd, typeflag, buf); |
| bfd_h_put_32 (abfd, cur->len, buf + 4); |
| |
| if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0 |
| || 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_32 (abfd, cur) != 0) |
| return FALSE; |
| break; |
| case BFD_MACH_O_LC_SEGMENT_64: |
| if (bfd_mach_o_scan_write_segment_64 (abfd, cur) != 0) |
| return FALSE; |
| break; |
| case BFD_MACH_O_LC_SYMTAB: |
| if (!bfd_mach_o_scan_write_symtab (abfd, cur)) |
| 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", |
| (unsigned long) cur->type); |
| return FALSE; |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| /* Build Mach-O load commands from the sections. */ |
| |
| bfd_boolean |
| bfd_mach_o_build_commands (bfd *abfd) |
| { |
| bfd_mach_o_data_struct *mdata = bfd_get_mach_o_data (abfd); |
| unsigned int wide = mach_o_wide_p (&mdata->header); |
| bfd_mach_o_segment_command *seg; |
| bfd_mach_o_section *sections; |
| asection *sec; |
| bfd_mach_o_load_command *cmd; |
| bfd_mach_o_load_command *symtab_cmd; |
| int target_index; |
| |
| /* Return now if commands are already built. */ |
| if (mdata->header.ncmds) |
| return FALSE; |
| |
| /* Very simple version: 1 command (segment) containing all sections. */ |
| mdata->header.ncmds = 2; |
| mdata->commands = bfd_alloc (abfd, mdata->header.ncmds |
| * sizeof (bfd_mach_o_load_command)); |
| if (mdata->commands == NULL) |
| return FALSE; |
| cmd = &mdata->commands[0]; |
| seg = &cmd->command.segment; |
| |
| seg->nsects = bfd_count_sections (abfd); |
| sections = bfd_alloc (abfd, seg->nsects * sizeof (bfd_mach_o_section)); |
| if (sections == NULL) |
| return FALSE; |
| seg->sections = sections; |
| |
| /* Set segment command. */ |
| if (wide) |
| { |
| cmd->type = BFD_MACH_O_LC_SEGMENT_64; |
| cmd->offset = BFD_MACH_O_HEADER_64_SIZE; |
| cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE |
| + BFD_MACH_O_SECTION_64_SIZE * seg->nsects; |
| } |
| else |
| { |
| cmd->type = BFD_MACH_O_LC_SEGMENT; |
| cmd->offset = BFD_MACH_O_HEADER_SIZE; |
| cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE |
| + BFD_MACH_O_SECTION_SIZE * seg->nsects; |
| } |
| cmd->type_required = FALSE; |
| mdata->header.sizeofcmds = cmd->len; |
| mdata->filelen = cmd->offset + cmd->len; |
| |
| /* Set symtab command. */ |
| symtab_cmd = &mdata->commands[1]; |
| |
| symtab_cmd->type = BFD_MACH_O_LC_SYMTAB; |
| symtab_cmd->offset = cmd->offset + cmd->len; |
| symtab_cmd->len = 6 * 4; |
| symtab_cmd->type_required = FALSE; |
| |
| mdata->header.sizeofcmds += symtab_cmd->len; |
| mdata->filelen += symtab_cmd->len; |
| |
| /* Fill segment command. */ |
| memset (seg->segname, 0, sizeof (seg->segname)); |
| seg->vmaddr = 0; |
| seg->fileoff = mdata->filelen; |
| seg->filesize = 0; |
| seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE |
| | BFD_MACH_O_PROT_EXECUTE; |
| seg->initprot = seg->maxprot; |
| seg->flags = 0; |
| |
| /* Create Mach-O sections. */ |
| target_index = 0; |
| for (sec = abfd->sections; sec; sec = sec->next) |
| { |
| sections->bfdsection = sec; |
| bfd_mach_o_convert_section_name_to_mach_o (abfd, sec, sections); |
| sections->addr = bfd_get_section_vma (abfd, sec); |
| sections->size = bfd_get_section_size (sec); |
| sections->align = bfd_get_section_alignment (abfd, sec); |
| |
| if (sections->size != 0) |
| { |
| mdata->filelen = FILE_ALIGN (mdata->filelen, sections->align); |
| sections->offset = mdata->filelen; |
| } |
| else |
| sections->offset = 0; |
| sections->reloff = 0; |
| sections->nreloc = 0; |
| sections->reserved1 = 0; |
| sections->reserved2 = 0; |
| sections->reserved3 = 0; |
| |
| sec->filepos = sections->offset; |
| sec->target_index = ++target_index; |
| |
| mdata->filelen += sections->size; |
| sections++; |
| } |
| seg->filesize = mdata->filelen - seg->fileoff; |
| seg->vmsize = seg->filesize; |
| |
| return TRUE; |
| } |
| |
| /* Set the contents of a section. */ |
| |
| bfd_boolean |
| bfd_mach_o_set_section_contents (bfd *abfd, |
| asection *section, |
| const void * location, |
| file_ptr offset, |
| bfd_size_type count) |
| { |
| file_ptr pos; |
| |
| /* This must be done first, because bfd_set_section_contents is |
| going to set output_has_begun to TRUE. */ |
| if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd)) |
| return FALSE; |
| |
| if (count == 0) |
| return TRUE; |
| |
| pos = section->filepos + offset; |
| if (bfd_seek (abfd, pos, SEEK_SET) != 0 |
| || bfd_bwrite (location, count, abfd) != count) |
| return FALSE; |
| |
| return TRUE; |
| } |
| |
| int |
| bfd_mach_o_sizeof_headers (bfd *a ATTRIBUTE_UNUSED, |
| struct bfd_link_info *info 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. */ |
| |
| asymbol * |
| bfd_mach_o_make_empty_symbol (bfd *abfd) |
| { |
| asymbol *new; |
| |
| new = bfd_zalloc (abfd, sizeof (bfd_mach_o_asymbol)); |
| if (new == NULL) |
| return new; |
| new->the_bfd = abfd; |
| new->udata.i = 0; |
| return new; |
| } |
| |
| static bfd_boolean |
| bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header) |
| { |
| unsigned char buf[32]; |
| unsigned int size; |
| bfd_vma (*get32) (const void *) = NULL; |
| |
| /* Just read the magic number. */ |
| if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| || bfd_bread ((PTR) buf, 4, abfd) != 4) |
| return FALSE; |
| |
| if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC) |
| { |
| header->byteorder = BFD_ENDIAN_BIG; |
| header->magic = BFD_MACH_O_MH_MAGIC; |
| header->version = 1; |
| get32 = bfd_getb32; |
| } |
| else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC) |
| { |
| header->byteorder = BFD_ENDIAN_LITTLE; |
| header->magic = BFD_MACH_O_MH_MAGIC; |
| header->version = 1; |
| get32 = bfd_getl32; |
| } |
| else if (bfd_getb32 (buf) == BFD_MACH_O_MH_MAGIC_64) |
| { |
| header->byteorder = BFD_ENDIAN_BIG; |
| header->magic = BFD_MACH_O_MH_MAGIC_64; |
| header->version = 2; |
| get32 = bfd_getb32; |
| } |
| else if (bfd_getl32 (buf) == BFD_MACH_O_MH_MAGIC_64) |
| { |
| header->byteorder = BFD_ENDIAN_LITTLE; |
| header->magic = BFD_MACH_O_MH_MAGIC_64; |
| header->version = 2; |
| get32 = bfd_getl32; |
| } |
| else |
| { |
| header->byteorder = BFD_ENDIAN_UNKNOWN; |
| return FALSE; |
| } |
| |
| /* Once the size of the header is known, read the full header. */ |
| size = mach_o_wide_p (header) ? |
| BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE; |
| |
| if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| || bfd_bread ((PTR) buf, size, abfd) != size) |
| return FALSE; |
| |
| 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); |
| |
| if (mach_o_wide_p (header)) |
| header->reserved = (*get32) (buf + 28); |
| |
| return TRUE; |
| } |
| |
| static asection * |
| bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section, |
| unsigned long prot) |
| { |
| asection *bfdsec; |
| char *sname; |
| flagword flags; |
| |
| sname = bfd_mach_o_convert_section_name_to_bfd (abfd, section); |
| if (sname == NULL) |
| return NULL; |
| |
| if (section->flags & BFD_MACH_O_S_ATTR_DEBUG) |
| flags = SEC_HAS_CONTENTS | SEC_DEBUGGING; |
| else |
| { |
| flags = SEC_ALLOC; |
| if ((section->flags & BFD_MACH_O_SECTION_TYPE_MASK) |
| != BFD_MACH_O_S_ZEROFILL) |
| { |
| flags |= SEC_HAS_CONTENTS | SEC_LOAD; |
| if (prot & BFD_MACH_O_PROT_EXECUTE) |
| flags |= SEC_CODE; |
| if (prot & BFD_MACH_O_PROT_WRITE) |
| flags |= SEC_DATA; |
| else if (prot & BFD_MACH_O_PROT_READ) |
| flags |= SEC_READONLY; |
| } |
| } |
| if (section->nreloc != 0) |
| flags |= SEC_RELOC; |
| |
| bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, flags); |
| 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; |
| bfdsec->segment_mark = 0; |
| bfdsec->reloc_count = section->nreloc; |
| bfdsec->rel_filepos = section->reloff; |
| |
| return bfdsec; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_section_32 (bfd *abfd, |
| bfd_mach_o_section *section, |
| unsigned int offset, |
| unsigned long prot) |
| { |
| unsigned char buf[BFD_MACH_O_SECTION_SIZE]; |
| |
| if (bfd_seek (abfd, offset, SEEK_SET) != 0 |
| || (bfd_bread ((PTR) buf, BFD_MACH_O_SECTION_SIZE, abfd) |
| != BFD_MACH_O_SECTION_SIZE)) |
| 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->reserved3 = 0; |
| section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot); |
| |
| if (section->bfdsection == NULL) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_section_64 (bfd *abfd, |
| bfd_mach_o_section *section, |
| unsigned int offset, |
| unsigned long prot) |
| { |
| unsigned char buf[BFD_MACH_O_SECTION_64_SIZE]; |
| |
| if (bfd_seek (abfd, offset, SEEK_SET) != 0 |
| || (bfd_bread ((PTR) buf, BFD_MACH_O_SECTION_64_SIZE, abfd) |
| != BFD_MACH_O_SECTION_64_SIZE)) |
| 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_64 (abfd, buf + 32); |
| section->size = bfd_h_get_64 (abfd, buf + 40); |
| section->offset = bfd_h_get_32 (abfd, buf + 48); |
| section->align = bfd_h_get_32 (abfd, buf + 52); |
| section->reloff = bfd_h_get_32 (abfd, buf + 56); |
| section->nreloc = bfd_h_get_32 (abfd, buf + 60); |
| section->flags = bfd_h_get_32 (abfd, buf + 64); |
| section->reserved1 = bfd_h_get_32 (abfd, buf + 68); |
| section->reserved2 = bfd_h_get_32 (abfd, buf + 72); |
| section->reserved3 = bfd_h_get_32 (abfd, buf + 76); |
| section->bfdsection = bfd_mach_o_make_bfd_section (abfd, section, prot); |
| |
| if (section->bfdsection == NULL) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_section (bfd *abfd, |
| bfd_mach_o_section *section, |
| unsigned int offset, |
| unsigned long prot, |
| unsigned int wide) |
| { |
| if (wide) |
| return bfd_mach_o_scan_read_section_64 (abfd, section, offset, prot); |
| else |
| return bfd_mach_o_scan_read_section_32 (abfd, section, offset, prot); |
| } |
| |
| int |
| bfd_mach_o_scan_read_symtab_symbol (bfd *abfd, |
| bfd_mach_o_symtab_command *sym, |
| bfd_mach_o_asymbol *s, |
| unsigned long i) |
| { |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| unsigned int wide = mach_o_wide_p (&mdata->header); |
| unsigned int symwidth = wide ? 16 : 12; |
| unsigned int symoff = sym->symoff + (i * symwidth); |
| unsigned char buf[16]; |
| unsigned char type = -1; |
| unsigned char section = -1; |
| short desc = -1; |
| symvalue value = -1; |
| unsigned long stroff = -1; |
| unsigned int symtype = -1; |
| |
| BFD_ASSERT (sym->strtab != NULL); |
| |
| if (bfd_seek (abfd, symoff, SEEK_SET) != 0 |
| || bfd_bread ((PTR) buf, symwidth, abfd) != symwidth) |
| { |
| fprintf (stderr, "bfd_mach_o_scan_read_symtab_symbol: unable to read %d bytes at %lu\n", |
| symwidth, (unsigned long) symoff); |
| return -1; |
| } |
| |
| stroff = bfd_h_get_32 (abfd, buf); |
| type = bfd_h_get_8 (abfd, buf + 4); |
| symtype = type & BFD_MACH_O_N_TYPE; |
| section = bfd_h_get_8 (abfd, buf + 5); |
| desc = bfd_h_get_16 (abfd, buf + 6); |
| if (wide) |
| value = bfd_h_get_64 (abfd, buf + 8); |
| else |
| 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->symbol.the_bfd = abfd; |
| s->symbol.name = sym->strtab + stroff; |
| s->symbol.value = value; |
| s->symbol.flags = 0x0; |
| s->symbol.udata.i = 0; |
| s->n_type = type; |
| s->n_sect = section; |
| s->n_desc = desc; |
| |
| if (type & BFD_MACH_O_N_STAB) |
| { |
| s->symbol.flags |= BSF_DEBUGGING; |
| s->symbol.section = bfd_und_section_ptr; |
| switch (type) |
| { |
| case N_FUN: |
| case N_STSYM: |
| case N_LCSYM: |
| case N_BNSYM: |
| case N_SLINE: |
| case N_ENSYM: |
| case N_ECOMM: |
| case N_ECOML: |
| case N_GSYM: |
| if ((section > 0) && (section <= mdata->nsects)) |
| { |
| s->symbol.section = mdata->sections[section - 1]->bfdsection; |
| s->symbol.value = |
| s->symbol.value - mdata->sections[section - 1]->addr; |
| } |
| break; |
| } |
| } |
| else |
| { |
| if (type & BFD_MACH_O_N_PEXT) |
| s->symbol.flags |= BSF_GLOBAL; |
| |
| if (type & BFD_MACH_O_N_EXT) |
| s->symbol.flags |= BSF_GLOBAL; |
| |
| if (!(type & (BFD_MACH_O_N_PEXT | BFD_MACH_O_N_EXT))) |
| s->symbol.flags |= BSF_LOCAL; |
| |
| switch (symtype) |
| { |
| case BFD_MACH_O_N_UNDF: |
| if (type == (BFD_MACH_O_N_UNDF | BFD_MACH_O_N_EXT) |
| && s->symbol.value != 0) |
| { |
| /* A common symbol. */ |
| s->symbol.section = bfd_com_section_ptr; |
| s->symbol.flags = BSF_NO_FLAGS; |
| } |
| else |
| { |
| s->symbol.section = bfd_und_section_ptr; |
| if (s->n_desc & BFD_MACH_O_N_WEAK_REF) |
| s->symbol.flags |= BSF_WEAK; |
| } |
| break; |
| case BFD_MACH_O_N_PBUD: |
| s->symbol.section = bfd_und_section_ptr; |
| break; |
| case BFD_MACH_O_N_ABS: |
| s->symbol.section = bfd_abs_section_ptr; |
| break; |
| case BFD_MACH_O_N_SECT: |
| if ((section > 0) && (section <= mdata->nsects)) |
| { |
| s->symbol.section = mdata->sections[section - 1]->bfdsection; |
| s->symbol.value = |
| s->symbol.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->symbol.name, section, mdata->nsects); |
| } |
| s->symbol.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->symbol.name); |
| s->symbol.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->symbol.name, symtype); |
| s->symbol.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; |
| |
| if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0 |
| || bfd_bread ((PTR) sym->strtab, sym->strsize, abfd) != sym->strsize) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| 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 (bfd_mach_o_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, |
| bfd_mach_o_asymbol *s, |
| unsigned long i) |
| { |
| unsigned long isymoff = dysym->indirectsymoff + (i * 4); |
| unsigned long symindex; |
| unsigned char buf[4]; |
| |
| BFD_ASSERT (i < dysym->nindirectsyms); |
| |
| if (bfd_seek (abfd, isymoff, SEEK_SET) != 0 |
| || 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_x86_THREAD_STATE32: return "x86_THREAD_STATE32"; |
| case BFD_MACH_O_x86_FLOAT_STATE32: return "x86_FLOAT_STATE32"; |
| case BFD_MACH_O_x86_EXCEPTION_STATE32: return "x86_EXCEPTION_STATE32"; |
| case BFD_MACH_O_x86_THREAD_STATE64: return "x86_THREAD_STATE64"; |
| case BFD_MACH_O_x86_FLOAT_STATE64: return "x86_FLOAT_STATE64"; |
| case BFD_MACH_O_x86_EXCEPTION_STATE64: return "x86_EXCEPTION_STATE64"; |
| case BFD_MACH_O_x86_THREAD_STATE: return "x86_THREAD_STATE"; |
| case BFD_MACH_O_x86_FLOAT_STATE: return "x86_FLOAT_STATE"; |
| case BFD_MACH_O_x86_EXCEPTION_STATE: return "x86_EXCEPTION_STATE"; |
| case BFD_MACH_O_x86_DEBUG_STATE32: return "x86_DEBUG_STATE32"; |
| case BFD_MACH_O_x86_DEBUG_STATE64: return "x86_DEBUG_STATE64"; |
| case BFD_MACH_O_x86_DEBUG_STATE: return "x86_DEBUG_STATE"; |
| case BFD_MACH_O_THREAD_STATE_NONE: return "THREAD_STATE_NONE"; |
| 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)); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || 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_with_flags (abfd, sname, SEC_HAS_CONTENTS); |
| if (bfdsec == NULL) |
| return -1; |
| |
| bfdsec->vma = 0; |
| bfdsec->lma = 0; |
| bfdsec->size = command->len - nameoff; |
| bfdsec->filepos = command->offset + nameoff; |
| bfdsec->alignment_power = 0; |
| |
| 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)); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || 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_with_flags (abfd, sname, SEC_HAS_CONTENTS); |
| 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; |
| |
| 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]; |
| unsigned int 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; |
| |
| if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0 |
| || 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; |
| |
| if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0 |
| || 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: |
| case BFD_MACH_O_CPU_TYPE_POWERPC_64: |
| flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour); |
| break; |
| case BFD_MACH_O_CPU_TYPE_I386: |
| case BFD_MACH_O_CPU_TYPE_X86_64: |
| 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_with_flags (abfd, sname, SEC_HAS_CONTENTS); |
| |
| bfdsec->vma = 0; |
| bfdsec->lma = 0; |
| bfdsec->size = cmd->flavours[i].size; |
| bfdsec->filepos = cmd->flavours[i].offset; |
| bfdsec->alignment_power = 0x0; |
| |
| 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); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || 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]; |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || 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; |
| |
| if (seg->nsyms != 0) |
| abfd->flags |= HAS_SYMS; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_uuid (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| bfd_mach_o_uuid_command *cmd = &command->command.uuid; |
| asection *bfdsec; |
| char *sname; |
| static const char prefix[] = "LC_UUID"; |
| |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || bfd_bread ((PTR) cmd->uuid, 16, abfd) != 16) |
| return -1; |
| |
| sname = bfd_alloc (abfd, strlen (prefix) + 1); |
| if (sname == NULL) |
| return -1; |
| strcpy (sname, prefix); |
| |
| bfdsec = bfd_make_section_anyway_with_flags (abfd, sname, SEC_HAS_CONTENTS); |
| 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; |
| |
| cmd->section = bfdsec; |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_segment (bfd *abfd, |
| bfd_mach_o_load_command *command, |
| unsigned int wide) |
| { |
| unsigned char buf[64]; |
| bfd_mach_o_segment_command *seg = &command->command.segment; |
| unsigned long i; |
| |
| if (wide) |
| { |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || bfd_bread ((PTR) buf, 64, abfd) != 64) |
| return -1; |
| |
| memcpy (seg->segname, buf, 16); |
| seg->segname[16] = '\0'; |
| |
| seg->vmaddr = bfd_h_get_64 (abfd, buf + 16); |
| seg->vmsize = bfd_h_get_64 (abfd, buf + 24); |
| seg->fileoff = bfd_h_get_64 (abfd, buf + 32); |
| seg->filesize = bfd_h_get_64 (abfd, buf + 40); |
| seg->maxprot = bfd_h_get_32 (abfd, buf + 48); |
| seg->initprot = bfd_h_get_32 (abfd, buf + 52); |
| seg->nsects = bfd_h_get_32 (abfd, buf + 56); |
| seg->flags = bfd_h_get_32 (abfd, buf + 60); |
| } |
| else |
| { |
| BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT); |
| |
| if (bfd_seek (abfd, command->offset + 8, SEEK_SET) != 0 |
| || bfd_bread ((PTR) buf, 48, abfd) != 48) |
| return -1; |
| |
| memcpy (seg->segname, buf, 16); |
| seg->segname[16] = '\0'; |
| |
| 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); |
| } |
| |
| 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; |
| if (wide) |
| segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE |
| + (i * BFD_MACH_O_SECTION_64_SIZE); |
| else |
| segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE |
| + (i * BFD_MACH_O_SECTION_SIZE); |
| |
| if (bfd_mach_o_scan_read_section |
| (abfd, &seg->sections[i], segoff, seg->initprot, wide) != 0) |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int |
| bfd_mach_o_scan_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| return bfd_mach_o_scan_read_segment (abfd, command, 0); |
| } |
| |
| static int |
| bfd_mach_o_scan_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| return bfd_mach_o_scan_read_segment (abfd, command, 1); |
| } |
| |
| static int |
| bfd_mach_o_scan_read_command (bfd *abfd, bfd_mach_o_load_command *command) |
| { |
| unsigned char buf[8]; |
| |
| if (bfd_seek (abfd, command->offset, SEEK_SET) != 0 |
| || 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 |
| ? TRUE : FALSE); |
| 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_32 (abfd, command) != 0) |
| return -1; |
| break; |
| case BFD_MACH_O_LC_SEGMENT_64: |
| if (bfd_mach_o_scan_read_segment_64 (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; |
| case BFD_MACH_O_LC_UUID: |
| if (bfd_mach_o_scan_read_uuid (abfd, command) != 0) |
| return -1; |
| break; |
| case BFD_MACH_O_LC_CODE_SIGNATURE: |
| case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO: |
| case BFD_MACH_O_LC_REEXPORT_DYLIB: |
| 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; |
| |
| /* Count total number of sections. */ |
| mdata->nsects = 0; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT |
| || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64) |
| { |
| bfd_mach_o_segment_command *seg; |
| |
| seg = &mdata->commands[i].command.segment; |
| mdata->nsects += seg->nsects; |
| } |
| } |
| |
| /* Allocate sections array. */ |
| mdata->sections = bfd_alloc (abfd, |
| mdata->nsects * sizeof (bfd_mach_o_section *)); |
| |
| /* Fill the array. */ |
| csect = 0; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT |
| || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64) |
| { |
| 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_x86_THREAD_STATE32)) |
| { |
| unsigned char buf[4]; |
| |
| if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0 |
| || 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]; |
| |
| if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0 |
| || 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_64) |
| && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE_64)) |
| { |
| unsigned char buf[8]; |
| |
| if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0 |
| || bfd_bread (buf, 8, abfd) != 8) |
| return -1; |
| |
| abfd->start_address = bfd_h_get_64 (abfd, buf); |
| } |
| else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64) |
| && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64)) |
| { |
| unsigned char buf[8]; |
| |
| if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0 |
| || bfd_bread (buf, 8, abfd) != 8) |
| return -1; |
| |
| abfd->start_address = bfd_h_get_64 (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; |
| unsigned int hdrsize; |
| |
| hdrsize = mach_o_wide_p (header) ? |
| BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE; |
| |
| mdata->header = *header; |
| |
| abfd->flags = abfd->flags & BFD_IN_MEMORY; |
| switch (header->filetype) |
| { |
| case BFD_MACH_O_MH_OBJECT: |
| abfd->flags |= HAS_RELOC; |
| break; |
| case BFD_MACH_O_MH_EXECUTE: |
| abfd->flags |= EXEC_P; |
| break; |
| case BFD_MACH_O_MH_DYLIB: |
| case BFD_MACH_O_MH_BUNDLE: |
| abfd->flags |= DYNAMIC; |
| break; |
| } |
| |
| 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 = hdrsize; |
| 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_init (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->nsects = 0; |
| mdata->sections = NULL; |
| |
| return TRUE; |
| } |
| |
| const bfd_target * |
| bfd_mach_o_header_p (bfd *abfd, |
| bfd_mach_o_filetype filetype, |
| bfd_mach_o_cpu_type cputype) |
| { |
| struct bfd_preserve preserve; |
| bfd_mach_o_header header; |
| |
| preserve.marker = NULL; |
| if (!bfd_mach_o_read_header (abfd, &header)) |
| goto wrong; |
| |
| if (! (header.byteorder == BFD_ENDIAN_BIG |
| || header.byteorder == BFD_ENDIAN_LITTLE)) |
| { |
| fprintf (stderr, "unknown header byte-order value 0x%lx\n", |
| (unsigned 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; |
| |
| /* Check cputype and filetype. |
| In case of wildcard, do not accept magics that are handled by existing |
| targets. */ |
| if (cputype) |
| { |
| if (header.cputype != cputype) |
| goto wrong; |
| } |
| else |
| { |
| switch (header.cputype) |
| { |
| case BFD_MACH_O_CPU_TYPE_I386: |
| /* Handled by mach-o-i386 */ |
| goto wrong; |
| default: |
| break; |
| } |
| } |
| if (filetype) |
| { |
| if (header.filetype != filetype) |
| goto wrong; |
| } |
| else |
| { |
| switch (header.filetype) |
| { |
| case BFD_MACH_O_MH_CORE: |
| /* Handled by core_p */ |
| goto wrong; |
| default: |
| break; |
| } |
| } |
| |
| 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; |
| } |
| |
| static const bfd_target * |
| bfd_mach_o_gen_object_p (bfd *abfd) |
| { |
| return bfd_mach_o_header_p (abfd, 0, 0); |
| } |
| |
| static const bfd_target * |
| bfd_mach_o_gen_core_p (bfd *abfd) |
| { |
| return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0); |
| } |
| |
| typedef struct mach_o_fat_archentry |
| { |
| unsigned long cputype; |
| unsigned long cpusubtype; |
| unsigned long offset; |
| unsigned long size; |
| unsigned long align; |
| } 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; |
| |
| if (bfd_seek (abfd, 0, SEEK_SET) != 0 |
| || 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; |
| /* Avoid matching Java bytecode files, which have the same magic number. |
| In the Java bytecode file format this field contains the JVM version, |
| which starts at 43.0. */ |
| if (adata->nfat_arch > 30) |
| 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++) |
| { |
| if (bfd_seek (abfd, 8 + 20 * i, SEEK_SET) != 0 |
| || 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); |
| } |
| |
| 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; |
| bfd *nbfd; |
| enum bfd_architecture arch_type; |
| unsigned long arch_subtype; |
| |
| 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].offset == prev->origin) |
| 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]; |
| nbfd = _bfd_new_bfd_contained_in (archive); |
| if (nbfd == NULL) |
| return NULL; |
| |
| nbfd->origin = entry->offset; |
| |
| bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype, |
| &arch_type, &arch_subtype); |
| /* Create the member filename. |
| Use FILENAME:ARCH_NAME. */ |
| { |
| char *s = NULL; |
| const char *arch_name; |
| size_t arch_file_len = strlen (bfd_get_filename (archive)); |
| |
| arch_name = bfd_printable_arch_mach (arch_type, arch_subtype); |
| s = bfd_malloc (arch_file_len + 1 + strlen (arch_name) + 1); |
| if (s == NULL) |
| return NULL; |
| memcpy (s, bfd_get_filename (archive), arch_file_len); |
| s[arch_file_len] = ':'; |
| strcpy (s + arch_file_len + 1, arch_name); |
| nbfd->filename = s; |
| } |
| nbfd->iostream = NULL; |
| bfd_set_arch_mach (nbfd, arch_type, arch_subtype); |
| |
| return nbfd; |
| } |
| |
| /* If ABFD format is FORMAT and architecture is ARCH, return it. |
| If ABFD is a fat image containing a member that corresponds to FORMAT |
| and ARCH, returns it. |
| In other case, returns NULL. |
| This function allows transparent uses of fat images. */ |
| bfd * |
| bfd_mach_o_fat_extract (bfd *abfd, |
| bfd_format format, |
| const bfd_arch_info_type *arch) |
| { |
| bfd *res; |
| mach_o_fat_data_struct *adata; |
| unsigned int i; |
| |
| if (bfd_check_format (abfd, format)) |
| { |
| if (bfd_get_arch_info (abfd) == arch) |
| return abfd; |
| return NULL; |
| } |
| if (!bfd_check_format (abfd, bfd_archive) |
| || abfd->xvec != &mach_o_fat_vec) |
| return NULL; |
| |
| /* This is a Mach-O fat image. */ |
| adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data; |
| BFD_ASSERT (adata != NULL); |
| |
| for (i = 0; i < adata->nfat_arch; i++) |
| { |
| struct mach_o_fat_archentry *e = &adata->archentries[i]; |
| enum bfd_architecture cpu_type; |
| unsigned long cpu_subtype; |
| |
| bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype, |
| &cpu_type, &cpu_subtype); |
| if (cpu_type != arch->arch || cpu_subtype != arch->mach) |
| continue; |
| |
| /* The architecture is found. */ |
| res = _bfd_new_bfd_contained_in (abfd); |
| if (res == NULL) |
| return NULL; |
| |
| res->origin = e->offset; |
| |
| res->filename = strdup (abfd->filename); |
| res->iostream = NULL; |
| |
| if (bfd_check_format (res, format)) |
| { |
| BFD_ASSERT (bfd_get_arch_info (res) == arch); |
| return res; |
| } |
| bfd_close (res); |
| return NULL; |
| } |
| |
| return NULL; |
| } |
| |
| 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 |
| || cmd->type != BFD_MACH_O_LC_SEGMENT_64) |
| 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; |
| } |
| } |
| |
| bfd_boolean |
| bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, PTR ptr) |
| { |
| bfd_mach_o_data_struct *mdata = abfd->tdata.mach_o_data; |
| FILE *file = (FILE *) ptr; |
| unsigned int i, j; |
| unsigned int sec_nbr = 0; |
| |
| fprintf (file, _("Segments and Sections:\n")); |
| fprintf (file, _(" #: Segment name Section name Address\n")); |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| bfd_mach_o_segment_command *seg; |
| |
| if (mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT |
| && mdata->commands[i].type != BFD_MACH_O_LC_SEGMENT_64) |
| continue; |
| |
| seg = &mdata->commands[i].command.segment; |
| |
| fprintf (file, "[Segment %-16s ", seg->segname); |
| fprintf_vma (file, seg->vmaddr); |
| fprintf (file, "-"); |
| fprintf_vma (file, seg->vmaddr + seg->vmsize - 1); |
| fputc (' ', file); |
| fputc (seg->initprot & BFD_MACH_O_PROT_READ ? 'r' : '-', file); |
| fputc (seg->initprot & BFD_MACH_O_PROT_WRITE ? 'w' : '-', file); |
| fputc (seg->initprot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-', file); |
| fprintf (file, "]\n"); |
| for (j = 0; j < seg->nsects; j++) |
| { |
| bfd_mach_o_section *sec = &seg->sections[j]; |
| fprintf (file, "%02u: %-16s %-16s ", ++sec_nbr, |
| sec->segname, sec->sectname); |
| fprintf_vma (file, sec->addr); |
| fprintf (file, " "); |
| fprintf_vma (file, sec->size); |
| fprintf (file, " %08lx\n", sec->flags); |
| } |
| } |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| bfd_mach_o_load_command *cmd = &mdata->commands[i]; |
| |
| switch (cmd->type) |
| { |
| case BFD_MACH_O_LC_SEGMENT: |
| case BFD_MACH_O_LC_SEGMENT_64: |
| break; |
| case BFD_MACH_O_LC_UUID: |
| { |
| bfd_mach_o_uuid_command *uuid = &cmd->command.uuid; |
| unsigned int i; |
| |
| fprintf (file, "\n" |
| "UUID:"); |
| for (i = 0; i < sizeof (uuid->uuid); i++) |
| fprintf (file, " %02x", uuid->uuid[i]); |
| fputc ('\n', file); |
| } |
| break; |
| case BFD_MACH_O_LC_LOAD_DYLIB: |
| { |
| bfd_mach_o_dylib_command *dylib = &cmd->command.dylib; |
| bfd_byte *data = NULL; |
| |
| if (! bfd_malloc_and_get_section (abfd, dylib->section, &data)) |
| { |
| if (data != NULL) |
| free (data); |
| break; |
| } |
| fprintf (file, "\n" |
| "LOAD_DYLIB: %s\n", |
| data + dylib->name_offset - cmd->offset - 8); |
| fprintf (file, " time stamp: 0x%08lx\n", |
| dylib->timestamp); |
| fprintf (file, " current version: 0x%08lx\n", |
| dylib->current_version); |
| fprintf (file, " comptibility version: 0x%08lx\n", |
| dylib->compatibility_version); |
| free (data); |
| break; |
| } |
| case BFD_MACH_O_LC_LOAD_DYLINKER: |
| { |
| bfd_mach_o_dylinker_command *linker = &cmd->command.dylinker; |
| bfd_byte *data = NULL; |
| |
| if (! bfd_malloc_and_get_section (abfd, linker->section, &data)) |
| { |
| if (data != NULL) |
| free (data); |
| break; |
| } |
| fprintf (file, "\n" |
| "LOAD_DYLINKER: %s\n", |
| data + linker->name_offset - cmd->offset - 8); |
| free (data); |
| break; |
| } |
| case BFD_MACH_O_LC_SYMTAB: |
| { |
| bfd_mach_o_symtab_command *symtab = &cmd->command.symtab; |
| fprintf (file, "\n" |
| "LC_SYMTAB: nsyms: %u, strsize: %u\n", |
| symtab->nsyms, symtab->strsize); |
| break; |
| } |
| case BFD_MACH_O_LC_DYSYMTAB: |
| { |
| bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab; |
| fprintf (file, "\n" |
| "LC_DYSYMTAB:\n" |
| " local symbols: index: %lu number: %lu\n", |
| dysymtab->ilocalsym, dysymtab->nlocalsym); |
| fprintf (file, |
| " external symbols: index: %lu number: %lu\n", |
| dysymtab->iextdefsym, dysymtab->nextdefsym); |
| fprintf (file, |
| " undefined symbols: index: %lu number: %lu\n", |
| dysymtab->iundefsym, dysymtab->nundefsym); |
| fprintf (file, |
| " ntoc: offset: %lu number: %lu\n", |
| dysymtab->tocoff, dysymtab->ntoc); |
| fprintf (file, |
| " module table: offset: %lu number: %lu\n", |
| dysymtab->modtaboff, dysymtab->nmodtab); |
| break; |
| } |
| default: |
| fprintf (file, "LC_%d\n", cmd->type); |
| break; |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| 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_or_free (buf, size); |
| if (buf == NULL) |
| return -1; |
| |
| if (bfd_seek (abfd, end - size, SEEK_SET) != 0) |
| { |
| free (buf); |
| return -1; |
| } |
| |
| nread = bfd_bread (buf, size, abfd); |
| |
| if (nread != size) |
| { |
| free (buf); |
| 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); |
| free (buf); |
| return 0; |
| } |
| } |
| |
| if (size == (end - start)) |
| break; |
| |
| size *= 2; |
| } |
| |
| free (buf); |
| } |
| } |
| |
| 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; |
| } |
| |
| #define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup |
| #define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup |
| |
| #define bfd_mach_o_swap_reloc_in NULL |
| #define bfd_mach_o_swap_reloc_out NULL |
| |
| #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 |