| /* od-macho.c -- dump information about an Mach-O object file. |
| Copyright 2011, 2012 Free Software Foundation, Inc. |
| Written by Tristan Gingold, Adacore. |
| |
| This file is part of GNU Binutils. |
| |
| 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, 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, 51 Franklin Street - Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| #include "sysdep.h" |
| #include <stddef.h> |
| #include <time.h> |
| #include "safe-ctype.h" |
| #include "bfd.h" |
| #include "objdump.h" |
| #include "bucomm.h" |
| #include "bfdlink.h" |
| #include "libbfd.h" |
| #include "mach-o.h" |
| #include "mach-o/external.h" |
| #include "mach-o/codesign.h" |
| |
| /* Index of the options in the options[] array. */ |
| #define OPT_HEADER 0 |
| #define OPT_SECTION 1 |
| #define OPT_MAP 2 |
| #define OPT_LOAD 3 |
| #define OPT_DYSYMTAB 4 |
| #define OPT_CODESIGN 5 |
| #define OPT_SEG_SPLIT_INFO 6 |
| |
| /* List of actions. */ |
| static struct objdump_private_option options[] = |
| { |
| { "header", 0 }, |
| { "section", 0 }, |
| { "map", 0 }, |
| { "load", 0 }, |
| { "dysymtab", 0 }, |
| { "codesign", 0 }, |
| { "seg_split_info", 0 }, |
| { NULL, 0 } |
| }; |
| |
| /* Display help. */ |
| |
| static void |
| mach_o_help (FILE *stream) |
| { |
| fprintf (stream, _("\ |
| For Mach-O files:\n\ |
| header Display the file header\n\ |
| section Display the segments and sections commands\n\ |
| map Display the section map\n\ |
| load Display the load commands\n\ |
| dysymtab Display the dynamic symbol table\n\ |
| codesign Display code signature\n\ |
| seg_split_info Display segment split info\n\ |
| ")); |
| } |
| |
| /* Return TRUE if ABFD is handled. */ |
| |
| static int |
| mach_o_filter (bfd *abfd) |
| { |
| return bfd_get_flavour (abfd) == bfd_target_mach_o_flavour; |
| } |
| |
| static const bfd_mach_o_xlat_name bfd_mach_o_cpu_name[] = |
| { |
| { "vax", BFD_MACH_O_CPU_TYPE_VAX }, |
| { "mc680x0", BFD_MACH_O_CPU_TYPE_MC680x0 }, |
| { "i386", BFD_MACH_O_CPU_TYPE_I386 }, |
| { "mips", BFD_MACH_O_CPU_TYPE_MIPS }, |
| { "mc98000", BFD_MACH_O_CPU_TYPE_MC98000 }, |
| { "hppa", BFD_MACH_O_CPU_TYPE_HPPA }, |
| { "arm", BFD_MACH_O_CPU_TYPE_ARM }, |
| { "mc88000", BFD_MACH_O_CPU_TYPE_MC88000 }, |
| { "sparc", BFD_MACH_O_CPU_TYPE_SPARC }, |
| { "i860", BFD_MACH_O_CPU_TYPE_I860 }, |
| { "alpha", BFD_MACH_O_CPU_TYPE_ALPHA }, |
| { "powerpc", BFD_MACH_O_CPU_TYPE_POWERPC }, |
| { "powerpc_64", BFD_MACH_O_CPU_TYPE_POWERPC_64 }, |
| { "x86_64", BFD_MACH_O_CPU_TYPE_X86_64 }, |
| { NULL, 0} |
| }; |
| |
| static const bfd_mach_o_xlat_name bfd_mach_o_filetype_name[] = |
| { |
| { "object", BFD_MACH_O_MH_OBJECT }, |
| { "execute", BFD_MACH_O_MH_EXECUTE }, |
| { "fvmlib", BFD_MACH_O_MH_FVMLIB }, |
| { "core", BFD_MACH_O_MH_CORE }, |
| { "preload", BFD_MACH_O_MH_PRELOAD }, |
| { "dylib", BFD_MACH_O_MH_DYLIB }, |
| { "dylinker", BFD_MACH_O_MH_DYLINKER }, |
| { "bundle", BFD_MACH_O_MH_BUNDLE }, |
| { "dylib_stub", BFD_MACH_O_MH_DYLIB_STUB }, |
| { "dym", BFD_MACH_O_MH_DSYM }, |
| { "kext_bundle", BFD_MACH_O_MH_KEXT_BUNDLE }, |
| { NULL, 0} |
| }; |
| |
| static const bfd_mach_o_xlat_name bfd_mach_o_header_flags_name[] = |
| { |
| { "noundefs", BFD_MACH_O_MH_NOUNDEFS }, |
| { "incrlink", BFD_MACH_O_MH_INCRLINK }, |
| { "dyldlink", BFD_MACH_O_MH_DYLDLINK }, |
| { "bindatload", BFD_MACH_O_MH_BINDATLOAD }, |
| { "prebound", BFD_MACH_O_MH_PREBOUND }, |
| { "split_segs", BFD_MACH_O_MH_SPLIT_SEGS }, |
| { "lazy_init", BFD_MACH_O_MH_LAZY_INIT }, |
| { "twolevel", BFD_MACH_O_MH_TWOLEVEL }, |
| { "force_flat", BFD_MACH_O_MH_FORCE_FLAT }, |
| { "nomultidefs", BFD_MACH_O_MH_NOMULTIDEFS }, |
| { "nofixprebinding", BFD_MACH_O_MH_NOFIXPREBINDING }, |
| { "prebindable", BFD_MACH_O_MH_PREBINDABLE }, |
| { "allmodsbound", BFD_MACH_O_MH_ALLMODSBOUND }, |
| { "subsections_via_symbols", BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS }, |
| { "canonical", BFD_MACH_O_MH_CANONICAL }, |
| { "weak_defines", BFD_MACH_O_MH_WEAK_DEFINES }, |
| { "binds_to_weak", BFD_MACH_O_MH_BINDS_TO_WEAK }, |
| { "allow_stack_execution", BFD_MACH_O_MH_ALLOW_STACK_EXECUTION }, |
| { "root_safe", BFD_MACH_O_MH_ROOT_SAFE }, |
| { "setuid_safe", BFD_MACH_O_MH_SETUID_SAFE }, |
| { "no_reexported_dylibs", BFD_MACH_O_MH_NO_REEXPORTED_DYLIBS }, |
| { "pie", BFD_MACH_O_MH_PIE }, |
| { NULL, 0} |
| }; |
| |
| static const bfd_mach_o_xlat_name bfd_mach_o_load_command_name[] = |
| { |
| { "segment", BFD_MACH_O_LC_SEGMENT}, |
| { "symtab", BFD_MACH_O_LC_SYMTAB}, |
| { "symseg", BFD_MACH_O_LC_SYMSEG}, |
| { "thread", BFD_MACH_O_LC_THREAD}, |
| { "unixthread", BFD_MACH_O_LC_UNIXTHREAD}, |
| { "loadfvmlib", BFD_MACH_O_LC_LOADFVMLIB}, |
| { "idfvmlib", BFD_MACH_O_LC_IDFVMLIB}, |
| { "ident", BFD_MACH_O_LC_IDENT}, |
| { "fvmfile", BFD_MACH_O_LC_FVMFILE}, |
| { "prepage", BFD_MACH_O_LC_PREPAGE}, |
| { "dysymtab", BFD_MACH_O_LC_DYSYMTAB}, |
| { "load_dylib", BFD_MACH_O_LC_LOAD_DYLIB}, |
| { "id_dylib", BFD_MACH_O_LC_ID_DYLIB}, |
| { "load_dylinker", BFD_MACH_O_LC_LOAD_DYLINKER}, |
| { "id_dylinker", BFD_MACH_O_LC_ID_DYLINKER}, |
| { "prebound_dylib", BFD_MACH_O_LC_PREBOUND_DYLIB}, |
| { "routines", BFD_MACH_O_LC_ROUTINES}, |
| { "sub_framework", BFD_MACH_O_LC_SUB_FRAMEWORK}, |
| { "sub_umbrella", BFD_MACH_O_LC_SUB_UMBRELLA}, |
| { "sub_client", BFD_MACH_O_LC_SUB_CLIENT}, |
| { "sub_library", BFD_MACH_O_LC_SUB_LIBRARY}, |
| { "twolevel_hints", BFD_MACH_O_LC_TWOLEVEL_HINTS}, |
| { "prebind_cksum", BFD_MACH_O_LC_PREBIND_CKSUM}, |
| { "load_weak_dylib", BFD_MACH_O_LC_LOAD_WEAK_DYLIB}, |
| { "segment_64", BFD_MACH_O_LC_SEGMENT_64}, |
| { "routines_64", BFD_MACH_O_LC_ROUTINES_64}, |
| { "uuid", BFD_MACH_O_LC_UUID}, |
| { "rpath", BFD_MACH_O_LC_RPATH}, |
| { "code_signature", BFD_MACH_O_LC_CODE_SIGNATURE}, |
| { "segment_split_info", BFD_MACH_O_LC_SEGMENT_SPLIT_INFO}, |
| { "reexport_dylib", BFD_MACH_O_LC_REEXPORT_DYLIB}, |
| { "lazy_load_dylib", BFD_MACH_O_LC_LAZY_LOAD_DYLIB}, |
| { "encryption_info", BFD_MACH_O_LC_ENCRYPTION_INFO}, |
| { "dyld_info", BFD_MACH_O_LC_DYLD_INFO}, |
| { "load_upward_lib", BFD_MACH_O_LC_LOAD_UPWARD_DYLIB}, |
| { "version_min_macosx", BFD_MACH_O_LC_VERSION_MIN_MACOSX}, |
| { "version_min_iphoneos", BFD_MACH_O_LC_VERSION_MIN_IPHONEOS}, |
| { "function_starts", BFD_MACH_O_LC_FUNCTION_STARTS}, |
| { "dyld_environment", BFD_MACH_O_LC_DYLD_ENVIRONMENT}, |
| { NULL, 0} |
| }; |
| |
| static const bfd_mach_o_xlat_name bfd_mach_o_thread_x86_name[] = |
| { |
| { "thread_state32", BFD_MACH_O_x86_THREAD_STATE32}, |
| { "float_state32", BFD_MACH_O_x86_FLOAT_STATE32}, |
| { "exception_state32", BFD_MACH_O_x86_EXCEPTION_STATE32}, |
| { "thread_state64", BFD_MACH_O_x86_THREAD_STATE64}, |
| { "float_state64", BFD_MACH_O_x86_FLOAT_STATE64}, |
| { "exception_state64", BFD_MACH_O_x86_EXCEPTION_STATE64}, |
| { "thread_state", BFD_MACH_O_x86_THREAD_STATE}, |
| { "float_state", BFD_MACH_O_x86_FLOAT_STATE}, |
| { "exception_state", BFD_MACH_O_x86_EXCEPTION_STATE}, |
| { "debug_state32", BFD_MACH_O_x86_DEBUG_STATE32}, |
| { "debug_state64", BFD_MACH_O_x86_DEBUG_STATE64}, |
| { "debug_state", BFD_MACH_O_x86_DEBUG_STATE}, |
| { "state_none", BFD_MACH_O_x86_THREAD_STATE_NONE}, |
| { NULL, 0 } |
| }; |
| |
| static void |
| bfd_mach_o_print_flags (const bfd_mach_o_xlat_name *table, |
| unsigned long val) |
| { |
| int first = 1; |
| |
| for (; table->name; table++) |
| { |
| if (table->val & val) |
| { |
| if (!first) |
| printf ("+"); |
| printf ("%s", table->name); |
| val &= ~table->val; |
| first = 0; |
| } |
| } |
| if (val) |
| { |
| if (!first) |
| printf ("+"); |
| printf ("0x%lx", val); |
| return; |
| } |
| if (first) |
| printf ("-"); |
| } |
| |
| static const char * |
| bfd_mach_o_get_name_or_null (const bfd_mach_o_xlat_name *table, |
| unsigned long val) |
| { |
| for (; table->name; table++) |
| if (table->val == val) |
| return table->name; |
| return NULL; |
| } |
| |
| static const char * |
| bfd_mach_o_get_name (const bfd_mach_o_xlat_name *table, unsigned long val) |
| { |
| const char *res = bfd_mach_o_get_name_or_null (table, val); |
| |
| if (res == NULL) |
| return "*UNKNOWN*"; |
| else |
| return res; |
| } |
| |
| static void |
| dump_header (bfd *abfd) |
| { |
| bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); |
| bfd_mach_o_header *h = &mdata->header; |
| |
| fputs (_("Mach-O header:\n"), stdout); |
| printf (_(" magic : %08lx\n"), h->magic); |
| printf (_(" cputype : %08lx (%s)\n"), h->cputype, |
| bfd_mach_o_get_name (bfd_mach_o_cpu_name, h->cputype)); |
| printf (_(" cpusubtype: %08lx\n"), h->cpusubtype); |
| printf (_(" filetype : %08lx (%s)\n"), |
| h->filetype, |
| bfd_mach_o_get_name (bfd_mach_o_filetype_name, h->filetype)); |
| printf (_(" ncmds : %08lx (%lu)\n"), h->ncmds, h->ncmds); |
| printf (_(" sizeofcmds: %08lx\n"), h->sizeofcmds); |
| printf (_(" flags : %08lx ("), h->flags); |
| bfd_mach_o_print_flags (bfd_mach_o_header_flags_name, h->flags); |
| fputs (_(")\n"), stdout); |
| printf (_(" reserved : %08x\n"), h->reserved); |
| } |
| |
| static void |
| dump_section_map (bfd *abfd) |
| { |
| bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); |
| unsigned int i; |
| unsigned int sec_nbr = 0; |
| |
| fputs (_("Segments and Sections:\n"), stdout); |
| fputs (_(" #: Segment name Section name Address\n"), stdout); |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| bfd_mach_o_segment_command *seg; |
| bfd_mach_o_section *sec; |
| |
| 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; |
| |
| printf ("[Segment %-16s ", seg->segname); |
| printf_vma (seg->vmaddr); |
| putchar ('-'); |
| printf_vma (seg->vmaddr + seg->vmsize - 1); |
| putchar (' '); |
| putchar (seg->initprot & BFD_MACH_O_PROT_READ ? 'r' : '-'); |
| putchar (seg->initprot & BFD_MACH_O_PROT_WRITE ? 'w' : '-'); |
| putchar (seg->initprot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-'); |
| printf ("]\n"); |
| |
| for (sec = seg->sect_head; sec != NULL; sec = sec->next) |
| { |
| printf ("%02u: %-16s %-16s ", ++sec_nbr, |
| sec->segname, sec->sectname); |
| printf_vma (sec->addr); |
| putchar (' '); |
| printf_vma (sec->size); |
| printf (" %08lx\n", sec->flags); |
| } |
| } |
| } |
| |
| static void |
| dump_section (bfd *abfd ATTRIBUTE_UNUSED, bfd_mach_o_section *sec) |
| { |
| printf (" Section: %-16s %-16s (bfdname: %s)\n", |
| sec->sectname, sec->segname, sec->bfdsection->name); |
| printf (" addr: "); |
| printf_vma (sec->addr); |
| printf (" size: "); |
| printf_vma (sec->size); |
| printf (" offset: "); |
| printf_vma (sec->offset); |
| printf ("\n"); |
| printf (" align: %ld", sec->align); |
| printf (" nreloc: %lu reloff: ", sec->nreloc); |
| printf_vma (sec->reloff); |
| printf ("\n"); |
| printf (" flags: %08lx (type: %s", sec->flags, |
| bfd_mach_o_get_name (bfd_mach_o_section_type_name, |
| sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)); |
| printf (" attr: "); |
| bfd_mach_o_print_flags (bfd_mach_o_section_attribute_name, |
| sec->flags & BFD_MACH_O_SECTION_ATTRIBUTES_MASK); |
| printf (")\n"); |
| switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK) |
| { |
| case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS: |
| case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS: |
| case BFD_MACH_O_S_SYMBOL_STUBS: |
| printf (" first indirect sym: %lu", sec->reserved1); |
| printf (" (%u entries)", |
| bfd_mach_o_section_get_nbr_indirect (abfd, sec)); |
| break; |
| default: |
| printf (" reserved1: 0x%lx", sec->reserved1); |
| break; |
| } |
| switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK) |
| { |
| case BFD_MACH_O_S_SYMBOL_STUBS: |
| printf (" stub size: %lu", sec->reserved2); |
| break; |
| default: |
| printf (" reserved2: 0x%lx", sec->reserved2); |
| break; |
| } |
| printf (" reserved3: 0x%lx\n", sec->reserved3); |
| } |
| |
| static void |
| dump_segment (bfd *abfd ATTRIBUTE_UNUSED, bfd_mach_o_load_command *cmd) |
| { |
| bfd_mach_o_segment_command *seg = &cmd->command.segment; |
| bfd_mach_o_section *sec; |
| |
| printf (" name: %s\n", *seg->segname ? seg->segname : "*none*"); |
| printf (" vmaddr: "); |
| printf_vma (seg->vmaddr); |
| printf (" vmsize: "); |
| printf_vma (seg->vmsize); |
| printf ("\n"); |
| printf (" fileoff: "); |
| printf_vma (seg->fileoff); |
| printf (" filesize: "); |
| printf_vma ((bfd_vma)seg->filesize); |
| printf (" endoff: "); |
| printf_vma ((bfd_vma)(seg->fileoff + seg->filesize)); |
| printf ("\n"); |
| printf (" nsects: %lu ", seg->nsects); |
| printf (" flags: %lx\n", seg->flags); |
| for (sec = seg->sect_head; sec != NULL; sec = sec->next) |
| dump_section (abfd, sec); |
| } |
| |
| static void |
| dump_dysymtab (bfd *abfd, bfd_mach_o_load_command *cmd, bfd_boolean verbose) |
| { |
| bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab; |
| bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); |
| unsigned int i; |
| |
| printf (" local symbols: idx: %10lu num: %-8lu", |
| dysymtab->ilocalsym, dysymtab->nlocalsym); |
| printf (" (nxtidx: %lu)\n", |
| dysymtab->ilocalsym + dysymtab->nlocalsym); |
| printf (" external symbols: idx: %10lu num: %-8lu", |
| dysymtab->iextdefsym, dysymtab->nextdefsym); |
| printf (" (nxtidx: %lu)\n", |
| dysymtab->iextdefsym + dysymtab->nextdefsym); |
| printf (" undefined symbols: idx: %10lu num: %-8lu", |
| dysymtab->iundefsym, dysymtab->nundefsym); |
| printf (" (nxtidx: %lu)\n", |
| dysymtab->iundefsym + dysymtab->nundefsym); |
| printf (" table of content: off: 0x%08lx num: %-8lu", |
| dysymtab->tocoff, dysymtab->ntoc); |
| printf (" (endoff: 0x%08lx)\n", |
| dysymtab->tocoff + dysymtab->ntoc * BFD_MACH_O_TABLE_OF_CONTENT_SIZE); |
| printf (" module table: off: 0x%08lx num: %-8lu", |
| dysymtab->modtaboff, dysymtab->nmodtab); |
| printf (" (endoff: 0x%08lx)\n", |
| dysymtab->modtaboff + dysymtab->nmodtab |
| * (mdata->header.version == 2 ? |
| BFD_MACH_O_DYLIB_MODULE_64_SIZE : BFD_MACH_O_DYLIB_MODULE_SIZE)); |
| printf (" external reference table: off: 0x%08lx num: %-8lu", |
| dysymtab->extrefsymoff, dysymtab->nextrefsyms); |
| printf (" (endoff: 0x%08lx)\n", |
| dysymtab->extrefsymoff |
| + dysymtab->nextrefsyms * BFD_MACH_O_REFERENCE_SIZE); |
| printf (" indirect symbol table: off: 0x%08lx num: %-8lu", |
| dysymtab->indirectsymoff, dysymtab->nindirectsyms); |
| printf (" (endoff: 0x%08lx)\n", |
| dysymtab->indirectsymoff |
| + dysymtab->nindirectsyms * BFD_MACH_O_INDIRECT_SYMBOL_SIZE); |
| printf (" external relocation table: off: 0x%08lx num: %-8lu", |
| dysymtab->extreloff, dysymtab->nextrel); |
| printf (" (endoff: 0x%08lx)\n", |
| dysymtab->extreloff + dysymtab->nextrel * BFD_MACH_O_RELENT_SIZE); |
| printf (" local relocation table: off: 0x%08lx num: %-8lu", |
| dysymtab->locreloff, dysymtab->nlocrel); |
| printf (" (endoff: 0x%08lx)\n", |
| dysymtab->locreloff + dysymtab->nlocrel * BFD_MACH_O_RELENT_SIZE); |
| |
| if (!verbose) |
| return; |
| |
| if (dysymtab->ntoc > 0 |
| || dysymtab->nindirectsyms > 0 |
| || dysymtab->nextrefsyms > 0) |
| { |
| /* Try to read the symbols to display the toc or indirect symbols. */ |
| bfd_mach_o_read_symtab_symbols (abfd); |
| } |
| else if (dysymtab->nmodtab > 0) |
| { |
| /* Try to read the strtab to display modules name. */ |
| bfd_mach_o_read_symtab_strtab (abfd); |
| } |
| |
| for (i = 0; i < dysymtab->nmodtab; i++) |
| { |
| bfd_mach_o_dylib_module *module = &dysymtab->dylib_module[i]; |
| printf (" module %u:\n", i); |
| printf (" name: %lu", module->module_name_idx); |
| if (mdata->symtab && mdata->symtab->strtab) |
| printf (": %s", |
| mdata->symtab->strtab + module->module_name_idx); |
| printf ("\n"); |
| printf (" extdefsym: idx: %8lu num: %lu\n", |
| module->iextdefsym, module->nextdefsym); |
| printf (" refsym: idx: %8lu num: %lu\n", |
| module->irefsym, module->nrefsym); |
| printf (" localsym: idx: %8lu num: %lu\n", |
| module->ilocalsym, module->nlocalsym); |
| printf (" extrel: idx: %8lu num: %lu\n", |
| module->iextrel, module->nextrel); |
| printf (" init: idx: %8u num: %u\n", |
| module->iinit, module->ninit); |
| printf (" term: idx: %8u num: %u\n", |
| module->iterm, module->nterm); |
| printf (" objc_module_info: addr: "); |
| printf_vma (module->objc_module_info_addr); |
| printf (" size: %lu\n", module->objc_module_info_size); |
| } |
| |
| if (dysymtab->ntoc > 0) |
| { |
| bfd_mach_o_symtab_command *symtab = mdata->symtab; |
| |
| printf (" table of content: (symbol/module)\n"); |
| for (i = 0; i < dysymtab->ntoc; i++) |
| { |
| bfd_mach_o_dylib_table_of_content *toc = &dysymtab->dylib_toc[i]; |
| |
| printf (" %4u: ", i); |
| if (symtab && symtab->symbols && toc->symbol_index < symtab->nsyms) |
| { |
| const char *name = symtab->symbols[toc->symbol_index].symbol.name; |
| printf ("%s (%lu)", name ? name : "*invalid*", |
| toc->symbol_index); |
| } |
| else |
| printf ("%lu", toc->symbol_index); |
| |
| printf (" / "); |
| if (symtab && symtab->strtab |
| && toc->module_index < dysymtab->nmodtab) |
| { |
| bfd_mach_o_dylib_module *mod; |
| mod = &dysymtab->dylib_module[toc->module_index]; |
| printf ("%s (%lu)", |
| symtab->strtab + mod->module_name_idx, |
| toc->module_index); |
| } |
| else |
| printf ("%lu", toc->module_index); |
| |
| printf ("\n"); |
| } |
| } |
| |
| if (dysymtab->nindirectsyms != 0) |
| { |
| printf (" indirect symbols:\n"); |
| |
| for (i = 0; i < mdata->nsects; i++) |
| { |
| bfd_mach_o_section *sec = mdata->sections[i]; |
| unsigned int j, first, last; |
| bfd_mach_o_symtab_command *symtab = mdata->symtab; |
| bfd_vma addr; |
| bfd_vma entry_size; |
| |
| switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK) |
| { |
| case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS: |
| case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS: |
| case BFD_MACH_O_S_SYMBOL_STUBS: |
| first = sec->reserved1; |
| last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec); |
| addr = sec->addr; |
| entry_size = bfd_mach_o_section_get_entry_size (abfd, sec); |
| printf (" for section %s.%s:\n", |
| sec->segname, sec->sectname); |
| for (j = first; j < last; j++) |
| { |
| unsigned int isym = dysymtab->indirect_syms[j]; |
| |
| printf (" "); |
| printf_vma (addr); |
| printf (" %5u: 0x%08x", j, isym); |
| if (isym & BFD_MACH_O_INDIRECT_SYMBOL_LOCAL) |
| printf (" LOCAL"); |
| if (isym & BFD_MACH_O_INDIRECT_SYMBOL_ABS) |
| printf (" ABSOLUTE"); |
| if (symtab && symtab->symbols |
| && isym < symtab->nsyms |
| && symtab->symbols[isym].symbol.name) |
| printf (" %s", symtab->symbols[isym].symbol.name); |
| printf ("\n"); |
| addr += entry_size; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| if (dysymtab->nextrefsyms > 0) |
| { |
| bfd_mach_o_symtab_command *symtab = mdata->symtab; |
| |
| printf (" external reference table: (symbol flags)\n"); |
| for (i = 0; i < dysymtab->nextrefsyms; i++) |
| { |
| bfd_mach_o_dylib_reference *ref = &dysymtab->ext_refs[i]; |
| |
| printf (" %4u: %5lu 0x%02lx", i, ref->isym, ref->flags); |
| if (symtab && symtab->symbols |
| && ref->isym < symtab->nsyms |
| && symtab->symbols[ref->isym].symbol.name) |
| printf (" %s", symtab->symbols[ref->isym].symbol.name); |
| printf ("\n"); |
| } |
| } |
| |
| } |
| |
| static void |
| dump_dyld_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_mach_o_load_command *cmd) |
| { |
| bfd_mach_o_dyld_info_command *info = &cmd->command.dyld_info; |
| |
| printf (" rebase: off: 0x%08x size: %-8u\n", |
| info->rebase_off, info->rebase_size); |
| printf (" bind: off: 0x%08x size: %-8u\n", |
| info->bind_off, info->bind_size); |
| printf (" weak bind: off: 0x%08x size: %-8u\n", |
| info->weak_bind_off, info->weak_bind_size); |
| printf (" lazy bind: off: 0x%08x size: %-8u\n", |
| info->lazy_bind_off, info->lazy_bind_size); |
| printf (" export: off: 0x%08x size: %-8u\n", |
| info->export_off, info->export_size); |
| } |
| |
| static void |
| dump_thread (bfd *abfd, bfd_mach_o_load_command *cmd) |
| { |
| bfd_mach_o_thread_command *thread = &cmd->command.thread; |
| unsigned int j; |
| bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd); |
| bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); |
| |
| printf (" nflavours: %lu\n", thread->nflavours); |
| for (j = 0; j < thread->nflavours; j++) |
| { |
| bfd_mach_o_thread_flavour *flavour = &thread->flavours[j]; |
| const bfd_mach_o_xlat_name *name_table; |
| |
| printf (" %2u: flavour: 0x%08lx", j, flavour->flavour); |
| switch (mdata->header.cputype) |
| { |
| case BFD_MACH_O_CPU_TYPE_I386: |
| case BFD_MACH_O_CPU_TYPE_X86_64: |
| name_table = bfd_mach_o_thread_x86_name; |
| break; |
| default: |
| name_table = NULL; |
| break; |
| } |
| if (name_table != NULL) |
| printf (": %s", bfd_mach_o_get_name (name_table, flavour->flavour)); |
| putchar ('\n'); |
| |
| printf (" offset: 0x%08lx size: 0x%08lx\n", |
| flavour->offset, flavour->size); |
| if (bed->_bfd_mach_o_print_thread) |
| { |
| char *buf = xmalloc (flavour->size); |
| |
| if (bfd_seek (abfd, flavour->offset, SEEK_SET) == 0 |
| && bfd_bread (buf, flavour->size, abfd) == flavour->size) |
| (*bed->_bfd_mach_o_print_thread)(abfd, flavour, stdout, buf); |
| |
| free (buf); |
| } |
| } |
| } |
| |
| static const bfd_mach_o_xlat_name bfd_mach_o_cs_magic[] = |
| { |
| { "embedded signature", BFD_MACH_O_CS_MAGIC_EMBEDDED_SIGNATURE }, |
| { "requirement", BFD_MACH_O_CS_MAGIC_REQUIREMENT }, |
| { "requirements", BFD_MACH_O_CS_MAGIC_REQUIREMENTS }, |
| { "code directory", BFD_MACH_O_CS_MAGIC_CODEDIRECTORY }, |
| { "embedded entitlements", BFD_MACH_O_CS_MAGIC_EMBEDDED_ENTITLEMENTS }, |
| { "blob wrapper", BFD_MACH_O_CS_MAGIC_BLOB_WRAPPER }, |
| { NULL, 0 } |
| }; |
| |
| static const bfd_mach_o_xlat_name bfd_mach_o_cs_hash_type[] = |
| { |
| { "no-hash", BFD_MACH_O_CS_NO_HASH }, |
| { "sha1", BFD_MACH_O_CS_HASH_SHA1 }, |
| { "sha256", BFD_MACH_O_CS_HASH_SHA256 }, |
| { "skein 160", BFD_MACH_O_CS_HASH_PRESTANDARD_SKEIN_160x256 }, |
| { "skein 256", BFD_MACH_O_CS_HASH_PRESTANDARD_SKEIN_256x512 }, |
| { NULL, 0 } |
| }; |
| |
| static unsigned int |
| dump_code_signature_blob (bfd *abfd, const unsigned char *buf, unsigned int len); |
| |
| static void |
| dump_code_signature_superblob (bfd *abfd ATTRIBUTE_UNUSED, |
| const unsigned char *buf, unsigned int len) |
| { |
| unsigned int count; |
| unsigned int i; |
| |
| if (len < 12) |
| { |
| printf (_(" [bad block length]\n")); |
| return; |
| } |
| count = bfd_getb32 (buf + 8); |
| printf (_(" %u index entries:\n"), count); |
| if (len < 12 + 8 * count) |
| { |
| printf (_(" [bad block length]\n")); |
| return; |
| } |
| for (i = 0; i < count; i++) |
| { |
| unsigned int type; |
| unsigned int off; |
| |
| type = bfd_getb32 (buf + 12 + 8 * i); |
| off = bfd_getb32 (buf + 12 + 8 * i + 4); |
| printf (_(" index entry %u: type: %08x, offset: %08x\n"), |
| i, type, off); |
| |
| dump_code_signature_blob (abfd, buf + off, len - off); |
| } |
| } |
| |
| static void |
| swap_code_codedirectory_v1_in |
| (const struct mach_o_codesign_codedirectory_external_v1 *src, |
| struct mach_o_codesign_codedirectory_v1 *dst) |
| { |
| dst->version = bfd_getb32 (src->version); |
| dst->flags = bfd_getb32 (src->flags); |
| dst->hash_offset = bfd_getb32 (src->hash_offset); |
| dst->ident_offset = bfd_getb32 (src->ident_offset); |
| dst->nbr_special_slots = bfd_getb32 (src->nbr_special_slots); |
| dst->nbr_code_slots = bfd_getb32 (src->nbr_code_slots); |
| dst->code_limit = bfd_getb32 (src->code_limit); |
| dst->hash_size = src->hash_size[0]; |
| dst->hash_type = src->hash_type[0]; |
| dst->spare1 = src->spare1[0]; |
| dst->page_size = src->page_size[0]; |
| dst->spare2 = bfd_getb32 (src->spare2); |
| } |
| |
| static void |
| hexdump (unsigned int start, unsigned int len, |
| const unsigned char *buf) |
| { |
| unsigned int i, j; |
| |
| for (i = 0; i < len; i += 16) |
| { |
| printf ("%08x:", start + i); |
| for (j = 0; j < 16; j++) |
| { |
| fputc (j == 8 ? '-' : ' ', stdout); |
| if (i + j < len) |
| printf ("%02x", buf[i + j]); |
| else |
| fputs (" ", stdout); |
| } |
| fputc (' ', stdout); |
| for (j = 0; j < 16; j++) |
| { |
| if (i + j < len) |
| fputc (ISPRINT (buf[i + j]) ? buf[i + j] : '.', stdout); |
| else |
| fputc (' ', stdout); |
| } |
| fputc ('\n', stdout); |
| } |
| } |
| |
| static void |
| dump_code_signature_codedirectory (bfd *abfd ATTRIBUTE_UNUSED, |
| const unsigned char *buf, unsigned int len) |
| { |
| struct mach_o_codesign_codedirectory_v1 cd; |
| const char *id; |
| |
| if (len < sizeof (struct mach_o_codesign_codedirectory_external_v1)) |
| { |
| printf (_(" [bad block length]\n")); |
| return; |
| } |
| |
| swap_code_codedirectory_v1_in |
| ((const struct mach_o_codesign_codedirectory_external_v1 *) (buf + 8), &cd); |
| |
| printf (_(" version: %08x\n"), cd.version); |
| printf (_(" flags: %08x\n"), cd.flags); |
| printf (_(" hash offset: %08x\n"), cd.hash_offset); |
| id = (const char *) buf + cd.ident_offset; |
| printf (_(" ident offset: %08x (- %08x)\n"), |
| cd.ident_offset, cd.ident_offset + (unsigned) strlen (id) + 1); |
| printf (_(" identity: %s\n"), id); |
| printf (_(" nbr special slots: %08x (at offset %08x)\n"), |
| cd.nbr_special_slots, |
| cd.hash_offset - cd.nbr_special_slots * cd.hash_size); |
| printf (_(" nbr code slots: %08x\n"), cd.nbr_code_slots); |
| printf (_(" code limit: %08x\n"), cd.code_limit); |
| printf (_(" hash size: %02x\n"), cd.hash_size); |
| printf (_(" hash type: %02x (%s)\n"), |
| cd.hash_type, |
| bfd_mach_o_get_name (bfd_mach_o_cs_hash_type, cd.hash_type)); |
| printf (_(" spare1: %02x\n"), cd.spare1); |
| printf (_(" page size: %02x\n"), cd.page_size); |
| printf (_(" spare2: %08x\n"), cd.spare2); |
| if (cd.version >= 0x20100) |
| printf (_(" scatter offset: %08x\n"), |
| (unsigned) bfd_getb32 (buf + 44)); |
| } |
| |
| static unsigned int |
| dump_code_signature_blob (bfd *abfd, const unsigned char *buf, unsigned int len) |
| { |
| unsigned int magic; |
| unsigned int length; |
| |
| if (len < 8) |
| { |
| printf (_(" [truncated block]\n")); |
| return 0; |
| } |
| magic = bfd_getb32 (buf); |
| length = bfd_getb32 (buf + 4); |
| if (magic == 0 || length == 0) |
| return 0; |
| |
| printf (_(" magic : %08x (%s)\n"), magic, |
| bfd_mach_o_get_name (bfd_mach_o_cs_magic, magic)); |
| printf (_(" length: %08x\n"), length); |
| if (length > len) |
| { |
| printf (_(" [bad block length]\n")); |
| return 0; |
| } |
| |
| switch (magic) |
| { |
| case BFD_MACH_O_CS_MAGIC_EMBEDDED_SIGNATURE: |
| dump_code_signature_superblob (abfd, buf, length); |
| break; |
| case BFD_MACH_O_CS_MAGIC_CODEDIRECTORY: |
| dump_code_signature_codedirectory (abfd, buf, length); |
| break; |
| default: |
| hexdump (0, length - 8, buf + 8); |
| break; |
| } |
| return length; |
| } |
| |
| static void |
| dump_code_signature (bfd *abfd, bfd_mach_o_linkedit_command *cmd) |
| { |
| unsigned char *buf = xmalloc (cmd->datasize); |
| unsigned int off; |
| |
| if (bfd_seek (abfd, cmd->dataoff, SEEK_SET) != 0 |
| || bfd_bread (buf, cmd->datasize, abfd) != cmd->datasize) |
| { |
| non_fatal (_("cannot read code signature data")); |
| free (buf); |
| return; |
| } |
| for (off = 0; off < cmd->datasize;) |
| { |
| unsigned int len; |
| |
| len = dump_code_signature_blob (abfd, buf + off, cmd->datasize - off); |
| |
| if (len == 0) |
| break; |
| off += len; |
| } |
| free (buf); |
| } |
| |
| static void |
| dump_segment_split_info (bfd *abfd, bfd_mach_o_linkedit_command *cmd) |
| { |
| unsigned char *buf = xmalloc (cmd->datasize); |
| unsigned char *p; |
| unsigned int len; |
| bfd_vma addr = 0; |
| |
| if (bfd_seek (abfd, cmd->dataoff, SEEK_SET) != 0 |
| || bfd_bread (buf, cmd->datasize, abfd) != cmd->datasize) |
| { |
| non_fatal (_("cannot read segment split info")); |
| free (buf); |
| return; |
| } |
| if (buf[cmd->datasize - 1] != 0) |
| { |
| non_fatal (_("segment split info is not nul terminated")); |
| free (buf); |
| return; |
| } |
| |
| switch (buf[0]) |
| { |
| case 0: |
| printf (_(" 32 bit pointers:\n")); |
| break; |
| case 1: |
| printf (_(" 64 bit pointers:\n")); |
| break; |
| case 2: |
| printf (_(" PPC hi-16:\n")); |
| break; |
| default: |
| printf (_(" Unhandled location type %u\n"), buf[0]); |
| break; |
| } |
| for (p = buf + 1; *p != 0; p += len) |
| { |
| addr += read_unsigned_leb128 (abfd, p, &len); |
| fputs (" ", stdout); |
| bfd_printf_vma (abfd, addr); |
| putchar ('\n'); |
| } |
| free (buf); |
| } |
| |
| static void |
| dump_load_command (bfd *abfd, bfd_mach_o_load_command *cmd, |
| bfd_boolean verbose) |
| { |
| bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); |
| const char *cmd_name; |
| |
| cmd_name = bfd_mach_o_get_name_or_null |
| (bfd_mach_o_load_command_name, cmd->type); |
| printf ("Load command "); |
| if (cmd_name == NULL) |
| printf ("0x%02x:", cmd->type); |
| else |
| printf ("%s:", cmd_name); |
| |
| switch (cmd->type) |
| { |
| case BFD_MACH_O_LC_SEGMENT: |
| case BFD_MACH_O_LC_SEGMENT_64: |
| dump_segment (abfd, cmd); |
| break; |
| case BFD_MACH_O_LC_UUID: |
| { |
| bfd_mach_o_uuid_command *uuid = &cmd->command.uuid; |
| unsigned int j; |
| |
| for (j = 0; j < sizeof (uuid->uuid); j ++) |
| printf (" %02x", uuid->uuid[j]); |
| putchar ('\n'); |
| } |
| break; |
| case BFD_MACH_O_LC_LOAD_DYLIB: |
| case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: |
| case BFD_MACH_O_LC_REEXPORT_DYLIB: |
| case BFD_MACH_O_LC_ID_DYLIB: |
| case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB: |
| { |
| bfd_mach_o_dylib_command *dylib = &cmd->command.dylib; |
| printf (" %s\n", dylib->name_str); |
| printf (" time stamp: 0x%08lx\n", |
| dylib->timestamp); |
| printf (" current version: 0x%08lx\n", |
| dylib->current_version); |
| printf (" comptibility version: 0x%08lx\n", |
| dylib->compatibility_version); |
| } |
| break; |
| case BFD_MACH_O_LC_LOAD_DYLINKER: |
| case BFD_MACH_O_LC_ID_DYLINKER: |
| printf (" %s\n", cmd->command.dylinker.name_str); |
| break; |
| case BFD_MACH_O_LC_SYMTAB: |
| { |
| bfd_mach_o_symtab_command *symtab = &cmd->command.symtab; |
| printf ("\n" |
| " symoff: 0x%08x nsyms: %8u (endoff: 0x%08x)\n", |
| symtab->symoff, symtab->nsyms, |
| symtab->symoff + symtab->nsyms |
| * (mdata->header.version == 2 |
| ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE)); |
| printf (" stroff: 0x%08x strsize: %8u (endoff: 0x%08x)\n", |
| symtab->stroff, symtab->strsize, |
| symtab->stroff + symtab->strsize); |
| break; |
| } |
| case BFD_MACH_O_LC_DYSYMTAB: |
| putchar ('\n'); |
| dump_dysymtab (abfd, cmd, verbose); |
| break; |
| case BFD_MACH_O_LC_LOADFVMLIB: |
| case BFD_MACH_O_LC_IDFVMLIB: |
| { |
| bfd_mach_o_fvmlib_command *fvmlib = &cmd->command.fvmlib; |
| printf (" %s\n", fvmlib->name_str); |
| printf (" minor version: 0x%08x\n", fvmlib->minor_version); |
| printf (" header address: 0x%08x\n", fvmlib->header_addr); |
| } |
| break; |
| case BFD_MACH_O_LC_CODE_SIGNATURE: |
| case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO: |
| case BFD_MACH_O_LC_FUNCTION_STARTS: |
| { |
| bfd_mach_o_linkedit_command *linkedit = &cmd->command.linkedit; |
| printf |
| ("\n" |
| " dataoff: 0x%08lx datasize: 0x%08lx (endoff: 0x%08lx)\n", |
| linkedit->dataoff, linkedit->datasize, |
| linkedit->dataoff + linkedit->datasize); |
| |
| if (verbose && cmd->type == BFD_MACH_O_LC_CODE_SIGNATURE) |
| dump_code_signature (abfd, linkedit); |
| else if (verbose && cmd->type == BFD_MACH_O_LC_SEGMENT_SPLIT_INFO) |
| dump_segment_split_info (abfd, linkedit); |
| break; |
| } |
| case BFD_MACH_O_LC_SUB_FRAMEWORK: |
| case BFD_MACH_O_LC_SUB_UMBRELLA: |
| case BFD_MACH_O_LC_SUB_LIBRARY: |
| case BFD_MACH_O_LC_SUB_CLIENT: |
| case BFD_MACH_O_LC_RPATH: |
| { |
| bfd_mach_o_str_command *str = &cmd->command.str; |
| printf (" %s\n", str->str); |
| break; |
| } |
| case BFD_MACH_O_LC_THREAD: |
| case BFD_MACH_O_LC_UNIXTHREAD: |
| dump_thread (abfd, cmd); |
| break; |
| case BFD_MACH_O_LC_ENCRYPTION_INFO: |
| { |
| bfd_mach_o_encryption_info_command *cryp = |
| &cmd->command.encryption_info; |
| printf |
| ("\n" |
| " cryptoff: 0x%08x cryptsize: 0x%08x (endoff 0x%08x)" |
| " cryptid: %u\n", |
| cryp->cryptoff, cryp->cryptsize, |
| cryp->cryptoff + cryp->cryptsize, |
| cryp->cryptid); |
| } |
| break; |
| case BFD_MACH_O_LC_DYLD_INFO: |
| putchar ('\n'); |
| dump_dyld_info (abfd, cmd); |
| break; |
| case BFD_MACH_O_LC_VERSION_MIN_MACOSX: |
| case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS: |
| { |
| bfd_mach_o_version_min_command *ver = &cmd->command.version_min; |
| |
| printf (" %u.%u.%u\n", ver->rel, ver->maj, ver->min); |
| } |
| break; |
| default: |
| putchar ('\n'); |
| printf (" offset: 0x%08lx\n", (unsigned long)cmd->offset); |
| printf (" size: 0x%08lx\n", (unsigned long)cmd->len); |
| break; |
| } |
| putchar ('\n'); |
| } |
| |
| static void |
| dump_load_commands (bfd *abfd, unsigned int cmd32, unsigned int cmd64) |
| { |
| bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); |
| unsigned int i; |
| |
| for (i = 0; i < mdata->header.ncmds; i++) |
| { |
| bfd_mach_o_load_command *cmd = &mdata->commands[i]; |
| |
| if (cmd32 == 0) |
| dump_load_command (abfd, cmd, FALSE); |
| else if (cmd->type == cmd32 || cmd->type == cmd64) |
| dump_load_command (abfd, cmd, TRUE); |
| } |
| } |
| |
| /* Dump ABFD (according to the options[] array). */ |
| |
| static void |
| mach_o_dump (bfd *abfd) |
| { |
| if (options[OPT_HEADER].selected) |
| dump_header (abfd); |
| if (options[OPT_SECTION].selected) |
| dump_load_commands (abfd, BFD_MACH_O_LC_SEGMENT, BFD_MACH_O_LC_SEGMENT_64); |
| if (options[OPT_MAP].selected) |
| dump_section_map (abfd); |
| if (options[OPT_LOAD].selected) |
| dump_load_commands (abfd, 0, 0); |
| if (options[OPT_DYSYMTAB].selected) |
| dump_load_commands (abfd, BFD_MACH_O_LC_DYSYMTAB, 0); |
| if (options[OPT_CODESIGN].selected) |
| dump_load_commands (abfd, BFD_MACH_O_LC_CODE_SIGNATURE, 0); |
| if (options[OPT_SEG_SPLIT_INFO].selected) |
| dump_load_commands (abfd, BFD_MACH_O_LC_SEGMENT_SPLIT_INFO, 0); |
| } |
| |
| /* Vector for Mach-O. */ |
| |
| const struct objdump_private_desc objdump_private_desc_mach_o = |
| { |
| mach_o_help, |
| mach_o_filter, |
| mach_o_dump, |
| options |
| }; |