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Mach-O: Add objdump -P dyld_info to dump dyld data.
include/mach-o/ * loader.h: Add macros for rebase, bind and export constants. binutils/ * od-macho.c (OPT_DYLD_INFO): New macro. (options): Add entry for dyld_info. (mach_o_help): Likewise. (load_and_dump, dump_dyld_info_rebase, dump_dyld_info_bind) (dump_dyld_info_export_1, dump_dyld_info_export): New functions. (bfd_mach_o_dyld_rebase_type_name): New array. (export_info_data): New struct. (dump_dyld_info): Add verbose argument. Dump rebase, bind and exports data. (dump_load_command): Adjust dump_dyld_info call. (mach_o_dump): Handle dyld_info.
This commit is contained in:
Tristan Gingold
parent
47f8a1070c
commit
e89d3dee76
@ -1,3 +1,17 @@
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2014-04-16 Tristan Gingold <gingold@adacore.com>
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* od-macho.c (OPT_DYLD_INFO): New macro.
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(options): Add entry for dyld_info.
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(mach_o_help): Likewise.
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(load_and_dump, dump_dyld_info_rebase, dump_dyld_info_bind)
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(dump_dyld_info_export_1, dump_dyld_info_export): New functions.
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(bfd_mach_o_dyld_rebase_type_name): New array.
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(export_info_data): New struct.
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(dump_dyld_info): Add verbose argument. Dump rebase, bind and
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exports data.
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(dump_load_command): Adjust dump_dyld_info call.
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(mach_o_dump): Handle dyld_info.
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2014-04-16 Tristan Gingold <gingold@adacore.com>
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* od-macho.c (dump_header): Display sizeofcmds in decimal too.
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@ -45,6 +45,7 @@
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#define OPT_FUNCTION_STARTS 8
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#define OPT_DATA_IN_CODE 9
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#define OPT_TWOLEVEL_HINTS 10
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#define OPT_DYLD_INFO 11
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/* List of actions. */
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static struct objdump_private_option options[] =
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@ -60,6 +61,7 @@ static struct objdump_private_option options[] =
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{ "function_starts", 0 },
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{ "data_in_code", 0 },
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{ "twolevel_hints", 0 },
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{ "dyld_info", 0 },
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{ NULL, 0 }
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};
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@ -81,6 +83,7 @@ For Mach-O files:\n\
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function_starts Display start address of functions\n\
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data_in_code Display data in code entries\n\
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twolevel_hints Display the two-level namespace lookup hints table\n\
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dyld_info Display dyld information\n\
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"));
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}
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@ -622,8 +625,319 @@ dump_dysymtab (bfd *abfd, bfd_mach_o_load_command *cmd, bfd_boolean verbose)
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}
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static bfd_boolean
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load_and_dump (bfd *abfd, ufile_ptr off, unsigned int len,
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void (*dump)(bfd *abfd, unsigned char *buf, unsigned int len,
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ufile_ptr off))
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{
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unsigned char *buf;
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if (len == 0)
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return TRUE;
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buf = xmalloc (len);
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if (bfd_seek (abfd, off, SEEK_SET) == 0
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&& bfd_bread (buf, len, abfd) == len)
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dump (abfd, buf, len, off);
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else
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return FALSE;
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free (buf);
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return TRUE;
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}
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static const bfd_mach_o_xlat_name bfd_mach_o_dyld_rebase_type_name[] =
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{
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{ "pointer", BFD_MACH_O_REBASE_TYPE_POINTER },
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{ "text_abs32", BFD_MACH_O_REBASE_TYPE_TEXT_ABSOLUTE32 },
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{ "text_pcrel32", BFD_MACH_O_REBASE_TYPE_TEXT_PCREL32 },
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{ NULL, 0 }
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};
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static void
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dump_dyld_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_mach_o_load_command *cmd)
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dump_dyld_info_rebase (bfd *abfd, unsigned char *buf, unsigned int len,
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ufile_ptr off ATTRIBUTE_UNUSED)
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{
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unsigned int i;
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bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
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unsigned int ptrsize = mdata->header.version == 2 ? 8 : 4;
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for (i = 0; i < len; )
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{
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unsigned char b = buf[i++];
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unsigned char imm = b & BFD_MACH_O_REBASE_IMMEDIATE_MASK;
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bfd_vma leb;
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unsigned int leblen;
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printf (" [0x%04x] 0x%02x: ", i, b);
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switch (b & BFD_MACH_O_REBASE_OPCODE_MASK)
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{
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case BFD_MACH_O_REBASE_OPCODE_DONE:
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printf ("done\n");
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return;
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case BFD_MACH_O_REBASE_OPCODE_SET_TYPE_IMM:
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printf ("set_type %s\n",
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bfd_mach_o_get_name (bfd_mach_o_dyld_rebase_type_name, imm));
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break;
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case BFD_MACH_O_REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("set segment: %u and offset: 0x%08x\n",
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imm, (unsigned) leb);
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i += leblen;
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break;
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case BFD_MACH_O_REBASE_OPCODE_ADD_ADDR_ULEB:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("add addr uleb: 0x%08x\n", (unsigned) leb);
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i += leblen;
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break;
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case BFD_MACH_O_REBASE_OPCODE_ADD_ADDR_IMM_SCALED:
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printf ("add addr imm scaled: %u\n", imm * ptrsize);
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break;
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case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_IMM_TIMES:
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printf ("rebase imm times: %u\n", imm);
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break;
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case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ULEB_TIMES:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("rebase uleb times: %u\n", (unsigned) leb);
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i += leblen;
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break;
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case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("rebase add addr uleb: %u\n", (unsigned) leb);
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i += leblen;
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break;
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case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("rebase uleb times (%u)", (unsigned) leb);
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i += leblen;
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf (" skipping uleb (%u)\n", (unsigned) leb);
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i += leblen;
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break;
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default:
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printf ("unknown\n");
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return;
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}
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}
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printf (" rebase commands without end!\n");
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}
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static void
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dump_dyld_info_bind (bfd *abfd, unsigned char *buf, unsigned int len,
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ufile_ptr off ATTRIBUTE_UNUSED)
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{
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unsigned int i;
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bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
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unsigned int ptrsize = mdata->header.version == 2 ? 8 : 4;
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for (i = 0; i < len; )
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{
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unsigned char b = buf[i++];
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unsigned char imm = b & BFD_MACH_O_BIND_IMMEDIATE_MASK;
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bfd_vma leb;
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unsigned int leblen;
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printf (" [0x%04x] 0x%02x: ", i, b);
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switch (b & BFD_MACH_O_BIND_OPCODE_MASK)
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{
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case BFD_MACH_O_BIND_OPCODE_DONE:
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printf ("done\n");
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return;
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case BFD_MACH_O_BIND_OPCODE_SET_DYLIB_ORDINAL_IMM:
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printf ("set dylib ordinal imm: %u\n", imm);
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break;
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case BFD_MACH_O_BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("set dylib ordinal uleb: %u\n", imm);
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i += leblen;
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break;
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case BFD_MACH_O_BIND_OPCODE_SET_DYLIB_SPECIAL_IMM:
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imm = (imm != 0) ? imm | BFD_MACH_O_BIND_OPCODE_MASK : imm;
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printf ("set dylib special imm: %d\n", imm);
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break;
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case BFD_MACH_O_BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM:
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printf ("set symbol trailing flags imm: 0x%02x, ", imm);
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for (; i < len && buf[i] != 0; i++)
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putchar (buf[i] >= ' ' && buf[i] < 0x7f ? buf[i] : '?');
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putchar ('\n');
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i++;
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break;
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case BFD_MACH_O_BIND_OPCODE_SET_TYPE_IMM:
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/* Kludge: use the same table as rebase type. */
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printf ("set_type %s\n",
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bfd_mach_o_get_name (bfd_mach_o_dyld_rebase_type_name, imm));
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break;
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case BFD_MACH_O_BIND_OPCODE_SET_ADDEND_SLEB:
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{
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bfd_signed_vma svma;
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svma = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("set addend sleb: 0x%08x\n", (unsigned) svma);
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i += leblen;
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}
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break;
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case BFD_MACH_O_BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("set segment: %u and offset: 0x%08x\n",
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imm, (unsigned) leb);
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i += leblen;
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break;
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case BFD_MACH_O_BIND_OPCODE_ADD_ADDR_ULEB:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("add addr uleb: 0x%08x\n", (unsigned) leb);
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i += leblen;
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break;
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case BFD_MACH_O_BIND_OPCODE_DO_BIND:
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printf ("do bind\n");
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break;
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case BFD_MACH_O_BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("do bind add addr uleb: 0x%08x\n", (unsigned) leb);
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i += leblen;
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break;
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case BFD_MACH_O_BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED:
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printf ("do bind add addr imm scaled: %u\n", imm * ptrsize);
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break;
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case BFD_MACH_O_BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB:
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf ("do bind uleb times (%u)", (unsigned) leb);
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i += leblen;
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leb = read_unsigned_leb128 (abfd, buf + i, &leblen);
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printf (" skipping uleb (%u)\n", (unsigned) leb);
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i += leblen;
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break;
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default:
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printf ("unknown\n");
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return;
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}
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}
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printf (" bind commands without end!\n");
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}
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struct export_info_data
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{
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const unsigned char *name;
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struct export_info_data *next;
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};
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static void
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dump_dyld_info_export_1 (bfd *abfd, unsigned char *buf, unsigned int len,
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unsigned int off, struct export_info_data *parent,
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struct export_info_data *base)
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{
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bfd_vma size;
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unsigned int leblen;
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unsigned int child_count;
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unsigned int i;
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size = read_unsigned_leb128 (abfd, buf + off, &leblen);
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off += leblen;
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if (size != 0)
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{
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bfd_vma flags;
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struct export_info_data *d;
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flags = read_unsigned_leb128 (abfd, buf + off, &leblen);
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off += leblen;
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fputs (" ", stdout);
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switch (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_MASK)
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{
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case BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_REGULAR:
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putchar ('-');
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break;
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case BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL:
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putchar ('T');
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break;
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default:
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putchar ('?');
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break;
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}
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putchar ((flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION) ?
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'W' : '-');
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if (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_REEXPORT)
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{
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bfd_vma lib;
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lib = read_unsigned_leb128 (abfd, buf + off, &leblen);
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off += leblen;
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fputs (" [reexport] ", stdout);
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for (d = base; d != NULL; d = d->next)
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printf ("%s", d->name);
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fputs (" (", stdout);
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if (buf[off] != 0)
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{
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fputs ((const char *)buf + off, stdout);
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putchar (' ');
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off += strlen ((const char *)buf + off);
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}
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printf ("from dylib %u)\n", (unsigned) lib);
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off++;
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}
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else
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{
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bfd_vma offset;
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bfd_vma resolv = 0;
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offset = read_unsigned_leb128 (abfd, buf + off, &leblen);
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off += leblen;
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if (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER)
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{
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resolv = read_unsigned_leb128 (abfd, buf + off, &leblen);
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off += leblen;
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}
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printf (" 0x%08x ", (unsigned) offset);
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for (d = base; d != NULL; d = d->next)
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printf ("%s", d->name);
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if (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER)
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printf (" [resolv: 0x%08x]", (unsigned) resolv);
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printf ("\n");
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}
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}
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child_count = read_unsigned_leb128 (abfd, buf + off, &leblen);
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off += leblen;
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for (i = 0; i < child_count; i++)
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{
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struct export_info_data sub_data;
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bfd_vma sub_off;
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sub_data.name = buf + off;
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sub_data.next = NULL;
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parent->next = &sub_data;
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off += strlen ((const char *)buf + off) + 1;
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sub_off = read_unsigned_leb128 (abfd, buf + off, &leblen);
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off += leblen;
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dump_dyld_info_export_1 (abfd, buf, len, sub_off, &sub_data, base);
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}
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}
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static void
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dump_dyld_info_export (bfd *abfd, unsigned char *buf, unsigned int len,
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ufile_ptr off ATTRIBUTE_UNUSED)
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{
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struct export_info_data data;
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data.name = (const unsigned char *) "";
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data.next = NULL;
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printf (" fl offset sym (Flags: Tls Weak)\n");
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dump_dyld_info_export_1 (abfd, buf, len, 0, &data, &data);
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}
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static void
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dump_dyld_info (bfd *abfd, bfd_mach_o_load_command *cmd,
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bfd_boolean verbose)
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{
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bfd_mach_o_dyld_info_command *info = &cmd->command.dyld_info;
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@ -642,6 +956,34 @@ dump_dyld_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_mach_o_load_command *cmd)
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printf (" export: off: 0x%08x size: %-8u (endoff: 0x%08x)\n",
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info->export_off, info->export_size,
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info->export_off + info->export_size);
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if (!verbose)
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return;
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printf (" rebase:\n");
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if (!load_and_dump (abfd, info->rebase_off, info->rebase_size,
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dump_dyld_info_rebase))
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non_fatal (_("cannot read rebase dyld info"));
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printf (" bind:\n");
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if (!load_and_dump (abfd, info->bind_off, info->bind_size,
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dump_dyld_info_bind))
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non_fatal (_("cannot read bind dyld info"));
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printf (" weak bind:\n");
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if (!load_and_dump (abfd, info->weak_bind_off, info->weak_bind_size,
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dump_dyld_info_bind))
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non_fatal (_("cannot read weak bind dyld info"));
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printf (" lazy bind:\n");
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if (!load_and_dump (abfd, info->lazy_bind_off, info->lazy_bind_size,
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dump_dyld_info_bind))
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non_fatal (_("cannot read lazy bind dyld info"));
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printf (" exported symbols:\n");
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if (!load_and_dump (abfd, info->export_off, info->export_size,
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dump_dyld_info_export))
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non_fatal (_("cannot read export symbols dyld info"));
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}
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static void
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@ -1219,16 +1561,15 @@ dump_load_command (bfd *abfd, bfd_mach_o_load_command *cmd,
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{
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bfd_mach_o_encryption_info_command *cryp =
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&cmd->command.encryption_info;
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printf
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(" cryptoff: 0x%08x cryptsize: 0x%08x (endoff 0x%08x)"
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" cryptid: %u\n",
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cryp->cryptoff, cryp->cryptsize,
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cryp->cryptoff + cryp->cryptsize,
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cryp->cryptid);
|
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printf (" 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:
|
||||
dump_dyld_info (abfd, cmd);
|
||||
dump_dyld_info (abfd, cmd, verbose);
|
||||
break;
|
||||
case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
|
||||
case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
|
||||
@ -1791,6 +2132,8 @@ mach_o_dump (bfd *abfd)
|
||||
dump_section_content (abfd, "__TEXT", "__unwind_info",
|
||||
dump_exe_compact_unwind);
|
||||
}
|
||||
if (options[OPT_DYLD_INFO].selected)
|
||||
dump_load_commands (abfd, BFD_MACH_O_LC_DYLD_INFO, 0);
|
||||
}
|
||||
|
||||
/* Vector for Mach-O. */
|
||||
|
||||
@ -1,3 +1,7 @@
|
||||
2014-04-16 Tristan Gingold <gingold@adacore.com>
|
||||
|
||||
* loader.h: Add macros for rebase, bind and export constants.
|
||||
|
||||
2014-04-16 Tristan Gingold <gingold@adacore.com>
|
||||
|
||||
* loader.h (BFD_MACH_O_CPU_ARCH_MASK, BFD_MACH_O_CPU_ARCH_ABI64)
|
||||
|
||||
@ -342,6 +342,63 @@ bfd_mach_o_section_attribute;
|
||||
#define BFD_MACH_O_INDIRECT_SYM_LOCAL 0x80000000
|
||||
#define BFD_MACH_O_INDIRECT_SYM_ABS 0x40000000
|
||||
|
||||
/* Constants for dyld info rebase. */
|
||||
#define BFD_MACH_O_REBASE_OPCODE_MASK 0xf0
|
||||
#define BFD_MACH_O_REBASE_IMMEDIATE_MASK 0x0f
|
||||
|
||||
/* The rebase opcodes. */
|
||||
#define BFD_MACH_O_REBASE_OPCODE_DONE 0x00
|
||||
#define BFD_MACH_O_REBASE_OPCODE_SET_TYPE_IMM 0x10
|
||||
#define BFD_MACH_O_REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB 0x20
|
||||
#define BFD_MACH_O_REBASE_OPCODE_ADD_ADDR_ULEB 0x30
|
||||
#define BFD_MACH_O_REBASE_OPCODE_ADD_ADDR_IMM_SCALED 0x40
|
||||
#define BFD_MACH_O_REBASE_OPCODE_DO_REBASE_IMM_TIMES 0x50
|
||||
#define BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ULEB_TIMES 0x60
|
||||
#define BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB 0x70
|
||||
#define BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB 0x80
|
||||
|
||||
/* The rebase type. */
|
||||
#define BFD_MACH_O_REBASE_TYPE_POINTER 1
|
||||
#define BFD_MACH_O_REBASE_TYPE_TEXT_ABSOLUTE32 2
|
||||
#define BFD_MACH_O_REBASE_TYPE_TEXT_PCREL32 3
|
||||
|
||||
/* Constants for dyld info bind. */
|
||||
#define BFD_MACH_O_BIND_OPCODE_MASK 0xf0
|
||||
#define BFD_MACH_O_BIND_IMMEDIATE_MASK 0x0f
|
||||
|
||||
/* The bind opcodes. */
|
||||
#define BFD_MACH_O_BIND_OPCODE_DONE 0x00
|
||||
#define BFD_MACH_O_BIND_OPCODE_SET_DYLIB_ORDINAL_IMM 0x10
|
||||
#define BFD_MACH_O_BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB 0x20
|
||||
#define BFD_MACH_O_BIND_OPCODE_SET_DYLIB_SPECIAL_IMM 0x30
|
||||
#define BFD_MACH_O_BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM 0x40
|
||||
#define BFD_MACH_O_BIND_OPCODE_SET_TYPE_IMM 0x50
|
||||
#define BFD_MACH_O_BIND_OPCODE_SET_ADDEND_SLEB 0x60
|
||||
#define BFD_MACH_O_BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB 0x70
|
||||
#define BFD_MACH_O_BIND_OPCODE_ADD_ADDR_ULEB 0x80
|
||||
#define BFD_MACH_O_BIND_OPCODE_DO_BIND 0x90
|
||||
#define BFD_MACH_O_BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB 0xa0
|
||||
#define BFD_MACH_O_BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED 0xb0
|
||||
#define BFD_MACH_O_BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB 0xc0
|
||||
|
||||
/* The bind types. */
|
||||
#define BFD_MACH_O_BIND_TYPE_POINTER 1
|
||||
#define BFD_MACH_O_BIND_TYPE_TEXT_ABSOLUTE32 2
|
||||
#define BFD_MACH_O_BIND_TYPE_TEXT_PCREL32 3
|
||||
|
||||
/* The special dylib. */
|
||||
#define BFD_MACH_O_BIND_SPECIAL_DYLIB_SELF 0
|
||||
#define BFD_MACH_O_BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE -1
|
||||
#define BFD_MACH_O_BIND_SPECIAL_DYLIB_FLAT_LOOKUP -2
|
||||
|
||||
/* Constants for dyld info export. */
|
||||
#define BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_MASK 0x03
|
||||
#define BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_REGULAR 0x00
|
||||
#define BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL 0x01
|
||||
#define BFD_MACH_O_EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION 0x04
|
||||
#define BFD_MACH_O_EXPORT_SYMBOL_FLAGS_REEXPORT 0x08
|
||||
#define BFD_MACH_O_EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER 0x10
|
||||
|
||||
/* Constants for DATA_IN_CODE entries. */
|
||||
typedef enum bfd_mach_o_data_in_code_entry_kind
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user