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od-macho.c
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/* od-macho.c -- dump information about an Mach-O object file.
Copyright (C) 2011-2015 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"
#include "mach-o/unwind.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
#define OPT_COMPACT_UNWIND 7
#define OPT_FUNCTION_STARTS 8
#define OPT_DATA_IN_CODE 9
#define OPT_TWOLEVEL_HINTS 10
#define OPT_DYLD_INFO 11
/* 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 },
{ "compact_unwind", 0 },
{ "function_starts", 0 },
{ "data_in_code", 0 },
{ "twolevel_hints", 0 },
{ "dyld_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\
compact_unwind Display compact unwinding info\n\
function_starts Display start address of functions\n\
data_in_code Display data in code entries\n\
twolevel_hints Display the two-level namespace lookup hints table\n\
dyld_info Display dyld information\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 },
{ "arm64", BFD_MACH_O_CPU_TYPE_ARM64 },
{ 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},
{ "main", BFD_MACH_O_LC_MAIN},
{ "data_in_code", BFD_MACH_O_LC_DATA_IN_CODE},
{ "source_version", BFD_MACH_O_LC_SOURCE_VERSION},
{ "dylib_code_sign_drs", BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS},
{ 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 ("-");
}
/* Print a bfd_uint64_t, using a platform independant style. */
static void
printf_uint64 (bfd_uint64_t v)
{
printf ("0x%08lx%08lx",
(unsigned long)((v >> 16) >> 16), (unsigned long)(v & 0xffffffffUL));
}
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 (%lu)\n"), h->sizeofcmds, 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);
putchar ('\n');
}
static void
disp_segment_prot (unsigned int prot)
{
putchar (prot & BFD_MACH_O_PROT_READ ? 'r' : '-');
putchar (prot & BFD_MACH_O_PROT_WRITE ? 'w' : '-');
putchar (prot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-');
}
static void
dump_section_map (bfd *abfd)
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bfd_mach_o_load_command *cmd;
unsigned int sec_nbr = 0;
fputs (_("Segments and Sections:\n"), stdout);
fputs (_(" #: Segment name Section name Address\n"), stdout);
for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
bfd_mach_o_segment_command *seg;
bfd_mach_o_section *sec;
if (cmd->type != BFD_MACH_O_LC_SEGMENT
&& cmd->type != BFD_MACH_O_LC_SEGMENT_64)
continue;
seg = &cmd->command.segment;
printf ("[Segment %-16s ", seg->segname);
printf_vma (seg->vmaddr);
putchar ('-');
printf_vma (seg->vmaddr + seg->vmsize - 1);
putchar (' ');
disp_segment_prot (seg->initprot);
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_header (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: %16s", *seg->segname ? seg->segname : "*none*");
printf (" nsects: %lu", seg->nsects);
printf (" flags: %lx", seg->flags);
printf (" initprot: ");
disp_segment_prot (seg->initprot);
printf (" maxprot: ");
disp_segment_prot (seg->maxprot);
printf ("\n");
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");
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
dump_section_header (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 bfd_boolean
load_and_dump (bfd *abfd, ufile_ptr off, unsigned int len,
void (*dump)(bfd *abfd, unsigned char *buf, unsigned int len,
ufile_ptr off))
{
unsigned char *buf;
if (len == 0)
return TRUE;
buf = xmalloc (len);
if (bfd_seek (abfd, off, SEEK_SET) == 0
&& bfd_bread (buf, len, abfd) == len)
dump (abfd, buf, len, off);
else
return FALSE;
free (buf);
return TRUE;
}
static const bfd_mach_o_xlat_name bfd_mach_o_dyld_rebase_type_name[] =
{
{ "pointer", BFD_MACH_O_REBASE_TYPE_POINTER },
{ "text_abs32", BFD_MACH_O_REBASE_TYPE_TEXT_ABSOLUTE32 },
{ "text_pcrel32", BFD_MACH_O_REBASE_TYPE_TEXT_PCREL32 },
{ NULL, 0 }
};
static void
dump_dyld_info_rebase (bfd *abfd, unsigned char *buf, unsigned int len,
ufile_ptr off ATTRIBUTE_UNUSED)
{
unsigned int i;
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
unsigned int ptrsize = mdata->header.version == 2 ? 8 : 4;
for (i = 0; i < len; )
{
unsigned char b = buf[i++];
unsigned char imm = b & BFD_MACH_O_REBASE_IMMEDIATE_MASK;
bfd_vma leb;
unsigned int leblen;
printf (" [0x%04x] 0x%02x: ", i, b);
switch (b & BFD_MACH_O_REBASE_OPCODE_MASK)
{
case BFD_MACH_O_REBASE_OPCODE_DONE:
printf ("done\n");
return;
case BFD_MACH_O_REBASE_OPCODE_SET_TYPE_IMM:
printf ("set_type %s\n",
bfd_mach_o_get_name (bfd_mach_o_dyld_rebase_type_name, imm));
break;
case BFD_MACH_O_REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("set segment: %u and offset: 0x%08x\n",
imm, (unsigned) leb);
i += leblen;
break;
case BFD_MACH_O_REBASE_OPCODE_ADD_ADDR_ULEB:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("add addr uleb: 0x%08x\n", (unsigned) leb);
i += leblen;
break;
case BFD_MACH_O_REBASE_OPCODE_ADD_ADDR_IMM_SCALED:
printf ("add addr imm scaled: %u\n", imm * ptrsize);
break;
case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_IMM_TIMES:
printf ("rebase imm times: %u\n", imm);
break;
case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ULEB_TIMES:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("rebase uleb times: %u\n", (unsigned) leb);
i += leblen;
break;
case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("rebase add addr uleb: %u\n", (unsigned) leb);
i += leblen;
break;
case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("rebase uleb times (%u)", (unsigned) leb);
i += leblen;
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf (" skipping uleb (%u)\n", (unsigned) leb);
i += leblen;
break;
default:
printf ("unknown\n");
return;
}
}
printf (" rebase commands without end!\n");
}
static void
dump_dyld_info_bind (bfd *abfd, unsigned char *buf, unsigned int len,
ufile_ptr off ATTRIBUTE_UNUSED)
{
unsigned int i;
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
unsigned int ptrsize = mdata->header.version == 2 ? 8 : 4;
for (i = 0; i < len; )
{
unsigned char b = buf[i++];
unsigned char imm = b & BFD_MACH_O_BIND_IMMEDIATE_MASK;
bfd_vma leb;
unsigned int leblen;
printf (" [0x%04x] 0x%02x: ", i, b);
switch (b & BFD_MACH_O_BIND_OPCODE_MASK)
{
case BFD_MACH_O_BIND_OPCODE_DONE:
printf ("done\n");
return;
case BFD_MACH_O_BIND_OPCODE_SET_DYLIB_ORDINAL_IMM:
printf ("set dylib ordinal imm: %u\n", imm);
break;
case BFD_MACH_O_BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("set dylib ordinal uleb: %u\n", imm);
i += leblen;
break;
case BFD_MACH_O_BIND_OPCODE_SET_DYLIB_SPECIAL_IMM:
imm = (imm != 0) ? imm | BFD_MACH_O_BIND_OPCODE_MASK : imm;
printf ("set dylib special imm: %d\n", imm);
break;
case BFD_MACH_O_BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM:
printf ("set symbol trailing flags imm: 0x%02x, ", imm);
for (; i < len && buf[i] != 0; i++)
putchar (buf[i] >= ' ' && buf[i] < 0x7f ? buf[i] : '?');
putchar ('\n');
i++;
break;
case BFD_MACH_O_BIND_OPCODE_SET_TYPE_IMM:
/* Kludge: use the same table as rebase type. */
printf ("set_type %s\n",
bfd_mach_o_get_name (bfd_mach_o_dyld_rebase_type_name, imm));
break;
case BFD_MACH_O_BIND_OPCODE_SET_ADDEND_SLEB:
{
bfd_signed_vma svma;
svma = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("set addend sleb: 0x%08x\n", (unsigned) svma);
i += leblen;
}
break;
case BFD_MACH_O_BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("set segment: %u and offset: 0x%08x\n",
imm, (unsigned) leb);
i += leblen;
break;
case BFD_MACH_O_BIND_OPCODE_ADD_ADDR_ULEB:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("add addr uleb: 0x%08x\n", (unsigned) leb);
i += leblen;
break;
case BFD_MACH_O_BIND_OPCODE_DO_BIND:
printf ("do bind\n");
break;
case BFD_MACH_O_BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("do bind add addr uleb: 0x%08x\n", (unsigned) leb);
i += leblen;
break;
case BFD_MACH_O_BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED:
printf ("do bind add addr imm scaled: %u\n", imm * ptrsize);
break;
case BFD_MACH_O_BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB:
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf ("do bind uleb times (%u)", (unsigned) leb);
i += leblen;
leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
printf (" skipping uleb (%u)\n", (unsigned) leb);
i += leblen;
break;
default:
printf ("unknown\n");
return;
}
}
printf (" bind commands without end!\n");
}
struct export_info_data
{
const unsigned char *name;
struct export_info_data *next;
};
static void
dump_dyld_info_export_1 (bfd *abfd, unsigned char *buf, unsigned int len,
unsigned int off, struct export_info_data *parent,
struct export_info_data *base)
{
bfd_vma size;
unsigned int leblen;
unsigned int child_count;
unsigned int i;
size = read_unsigned_leb128 (abfd, buf + off, &leblen);
off += leblen;
if (size != 0)
{
bfd_vma flags;
struct export_info_data *d;
flags = read_unsigned_leb128 (abfd, buf + off, &leblen);
off += leblen;
fputs (" ", stdout);
switch (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_MASK)
{
case BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_REGULAR:
putchar ('-');
break;
case BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL:
putchar ('T');
break;
default:
putchar ('?');
break;
}
putchar ((flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION) ?
'W' : '-');
if (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_REEXPORT)
{
bfd_vma lib;
lib = read_unsigned_leb128 (abfd, buf + off, &leblen);
off += leblen;
fputs (" [reexport] ", stdout);
for (d = base; d != NULL; d = d->next)
printf ("%s", d->name);
fputs (" (", stdout);
if (buf[off] != 0)
{
fputs ((const char *)buf + off, stdout);
putchar (' ');
off += strlen ((const char *)buf + off);
}
printf ("from dylib %u)\n", (unsigned) lib);
off++;
}
else
{
bfd_vma offset;
bfd_vma resolv = 0;
offset = read_unsigned_leb128 (abfd, buf + off, &leblen);
off += leblen;
if (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER)
{
resolv = read_unsigned_leb128 (abfd, buf + off, &leblen);
off += leblen;
}
printf (" 0x%08x ", (unsigned) offset);
for (d = base; d != NULL; d = d->next)
printf ("%s", d->name);
if (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER)
printf (" [resolv: 0x%08x]", (unsigned) resolv);
printf ("\n");
}
}
child_count = read_unsigned_leb128 (abfd, buf + off, &leblen);
off += leblen;
for (i = 0; i < child_count; i++)
{
struct export_info_data sub_data;
bfd_vma sub_off;
sub_data.name = buf + off;
sub_data.next = NULL;
parent->next = &sub_data;
off += strlen ((const char *)buf + off) + 1;
sub_off = read_unsigned_leb128 (abfd, buf + off, &leblen);
off += leblen;
dump_dyld_info_export_1 (abfd, buf, len, sub_off, &sub_data, base);
}
}
static void
dump_dyld_info_export (bfd *abfd, unsigned char *buf, unsigned int len,
ufile_ptr off ATTRIBUTE_UNUSED)
{
struct export_info_data data;
data.name = (const unsigned char *) "";
data.next = NULL;
printf (" fl offset sym (Flags: Tls Weak)\n");
dump_dyld_info_export_1 (abfd, buf, len, 0, &data, &data);
}
static void
dump_dyld_info (bfd *abfd, bfd_mach_o_load_command *cmd,
bfd_boolean verbose)
{
bfd_mach_o_dyld_info_command *info = &cmd->command.dyld_info;
printf (" rebase: off: 0x%08x size: %-8u (endoff: 0x%08x)\n",
info->rebase_off, info->rebase_size,
info->rebase_off + info->rebase_size);
printf (" bind: off: 0x%08x size: %-8u (endoff: 0x%08x)\n",
info->bind_off, info->bind_size,
info->bind_off + info->bind_size);
printf (" weak bind: off: 0x%08x size: %-8u (endoff: 0x%08x)\n",
info->weak_bind_off, info->weak_bind_size,
info->weak_bind_off + info->weak_bind_size);
printf (" lazy bind: off: 0x%08x size: %-8u (endoff: 0x%08x)\n",
info->lazy_bind_off, info->lazy_bind_size,
info->lazy_bind_off + info->lazy_bind_size);
printf (" export: off: 0x%08x size: %-8u (endoff: 0x%08x)\n",
info->export_off, info->export_size,
info->export_off + info->export_size);
if (!verbose)
return;
printf (" rebase:\n");
if (!load_and_dump (abfd, info->rebase_off, info->rebase_size,
dump_dyld_info_rebase))
non_fatal (_("cannot read rebase dyld info"));
printf (" bind:\n");
if (!load_and_dump (abfd, info->bind_off, info->bind_size,
dump_dyld_info_bind))
non_fatal (_("cannot read bind dyld info"));
printf (" weak bind:\n");
if (!load_and_dump (abfd, info->weak_bind_off, info->weak_bind_size,
dump_dyld_info_bind))
non_fatal (_("cannot read weak bind dyld info"));
printf (" lazy bind:\n");
if (!load_and_dump (abfd, info->lazy_bind_off, info->lazy_bind_size,
dump_dyld_info_bind))
non_fatal (_("cannot read lazy bind dyld info"));
printf (" exported symbols:\n");
if (!load_and_dump (abfd, info->export_off, info->export_size,
dump_dyld_info_export))
non_fatal (_("cannot read export symbols dyld info"));
}
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];