+ dump_load_command (abfd, cmd, i, TRUE);
+ }
+}
+
+static const char * const unwind_x86_64_regs[] =
+ {"", "rbx", "r12", "r13", "r14", "r15", "rbp", "???" };
+
+static const char * const unwind_x86_regs[] =
+ {"", "ebx", "ecx", "edx", "edi", "edi", "ebp", "???" };
+
+/* Dump x86 or x86-64 compact unwind encoding. Works for both architecture,
+ as the encoding is the same (but not register names). */
+
+static void
+dump_unwind_encoding_x86 (unsigned int encoding, unsigned int sz,
+ const char * const regs_name[])
+{
+ unsigned int mode;
+
+ mode = encoding & MACH_O_UNWIND_X86_64_MODE_MASK;
+ switch (mode)
+ {
+ case MACH_O_UNWIND_X86_64_MODE_RBP_FRAME:
+ {
+ unsigned int regs;
+ char pfx = sz == 8 ? 'R' : 'E';
+
+ regs = encoding & MACH_O_UNWIND_X86_64_RBP_FRAME_REGISTERS;
+ printf (" %cSP frame", pfx);
+ if (regs != 0)
+ {
+ unsigned int offset;
+ int i;
+
+ offset = (encoding & MACH_O_UNWIND_X86_64_RBP_FRAME_OFFSET) >> 16;
+ printf (" at %cBP-%u:", pfx, offset * sz);
+ for (i = 0; i < 5; i++)
+ {
+ unsigned int reg = (regs >> (i * 3)) & 0x7;
+ if (reg != MACH_O_UNWIND_X86_64_REG_NONE)
+ printf (" %s", regs_name[reg]);
+ }
+ }
+ }
+ break;
+ case MACH_O_UNWIND_X86_64_MODE_STACK_IMMD:
+ case MACH_O_UNWIND_X86_64_MODE_STACK_IND:
+ {
+ unsigned int stack_size;
+ unsigned int reg_count;
+ unsigned int reg_perm;
+ unsigned int regs[6];
+ int i, j;
+
+ printf (" frameless");
+ stack_size =
+ (encoding & MACH_O_UNWIND_X86_64_FRAMELESS_STACK_SIZE) >> 16;
+ reg_count =
+ (encoding & MACH_O_UNWIND_X86_64_FRAMELESS_REG_COUNT) >> 10;
+ reg_perm = encoding & MACH_O_UNWIND_X86_64_FRAMELESS_REG_PERMUTATION;
+
+ if (mode == MACH_O_UNWIND_X86_64_MODE_STACK_IMMD)
+ printf (" size: 0x%03x", stack_size * sz);
+ else
+ {
+ unsigned int stack_adj;
+
+ stack_adj =
+ (encoding & MACH_O_UNWIND_X86_64_FRAMELESS_STACK_ADJUST) >> 13;
+ printf (" size at 0x%03x + 0x%02x", stack_size, stack_adj * sz);
+ }
+ /* Registers are coded using arithmetic compression: the register
+ is indexed in range 0-6, the second in range 0-5, the third in
+ range 0-4, etc. Already used registers are removed in next
+ ranges. */
+#define DO_PERM(R, NUM) R = reg_perm / NUM; reg_perm -= R * NUM
+ switch (reg_count)
+ {
+ case 6:
+ case 5:
+ DO_PERM (regs[0], 120);
+ DO_PERM (regs[1], 24);
+ DO_PERM (regs[2], 6);
+ DO_PERM (regs[3], 2);
+ DO_PERM (regs[4], 1);
+ regs[5] = 0; /* Not used if reg_count = 5. */
+ break;
+ case 4:
+ DO_PERM (regs[0], 60);
+ DO_PERM (regs[1], 12);
+ DO_PERM (regs[2], 3);
+ DO_PERM (regs[3], 1);
+ break;
+ case 3:
+ DO_PERM (regs[0], 20);
+ DO_PERM (regs[1], 4);
+ DO_PERM (regs[2], 1);
+ break;
+ case 2:
+ DO_PERM (regs[0], 5);
+ DO_PERM (regs[1], 1);
+ break;
+ case 1:
+ DO_PERM (regs[0], 1);
+ break;
+ case 0:
+ break;
+ default:
+ printf (" [bad reg count]");
+ return;
+ }
+#undef DO_PERM
+ /* Renumber. */
+ for (i = reg_count - 1; i >= 0; i--)
+ {
+ unsigned int inc = 1;
+ for (j = 0; j < i; j++)
+ if (regs[i] >= regs[j])
+ inc++;
+ regs[i] += inc;
+ }
+ /* Display. */
+ for (i = 0; i < (int) reg_count; i++)
+ printf (" %s", regs_name[regs[i]]);
+ }
+ break;
+ case MACH_O_UNWIND_X86_64_MODE_DWARF:
+ printf (" Dwarf offset: 0x%06x",
+ encoding & MACH_O_UNWIND_X86_64_DWARF_SECTION_OFFSET);
+ break;
+ default:
+ printf (" [unhandled mode]");
+ break;
+ }
+}
+
+/* Dump arm64 compact unwind entries. */
+
+static void
+dump_unwind_encoding_arm64 (unsigned int encoding)
+{
+ switch (encoding & MACH_O_UNWIND_ARM64_MODE_MASK)
+ {
+ case MACH_O_UNWIND_ARM64_MODE_FRAMELESS:
+ printf (" frameless");
+ break;
+ case MACH_O_UNWIND_ARM64_MODE_DWARF:
+ printf (" Dwarf offset: 0x%06x",
+ encoding & MACH_O_UNWIND_ARM64_DWARF_SECTION_OFFSET);
+ return;
+ case MACH_O_UNWIND_ARM64_MODE_FRAME:
+ printf (" frame");
+ break;
+ default:
+ printf (" [unhandled mode]");
+ return;
+ }
+ switch (encoding & MACH_O_UNWIND_ARM64_MODE_MASK)
+ {
+ case MACH_O_UNWIND_ARM64_MODE_FRAMELESS:
+ case MACH_O_UNWIND_ARM64_MODE_FRAME:
+ if (encoding & MACH_O_UNWIND_ARM64_FRAME_X19_X20_PAIR)
+ printf (" x19-x20");
+ if (encoding & MACH_O_UNWIND_ARM64_FRAME_X21_X22_PAIR)
+ printf (" x21-x22");
+ if (encoding & MACH_O_UNWIND_ARM64_FRAME_X23_X24_PAIR)
+ printf (" x23-x24");
+ if (encoding & MACH_O_UNWIND_ARM64_FRAME_X25_X26_PAIR)
+ printf (" x25-x26");
+ if (encoding & MACH_O_UNWIND_ARM64_FRAME_X27_X28_PAIR)
+ printf (" x27-x28");
+ break;
+ }
+ switch (encoding & MACH_O_UNWIND_ARM64_MODE_MASK)
+ {
+ case MACH_O_UNWIND_ARM64_MODE_FRAME:
+ if (encoding & MACH_O_UNWIND_ARM64_FRAME_D8_D9_PAIR)
+ printf (" d8-d9");
+ if (encoding & MACH_O_UNWIND_ARM64_FRAME_D10_D11_PAIR)
+ printf (" d10-d11");
+ if (encoding & MACH_O_UNWIND_ARM64_FRAME_D12_D13_PAIR)
+ printf (" d12-d13");
+ if (encoding & MACH_O_UNWIND_ARM64_FRAME_D14_D15_PAIR)
+ printf (" d14-d15");
+ break;
+ case MACH_O_UNWIND_ARM64_MODE_FRAMELESS:
+ printf (" size: %u",
+ (encoding & MACH_O_UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK) >> 8);
+ break;
+ }
+}
+
+static void
+dump_unwind_encoding (bfd_mach_o_data_struct *mdata, unsigned int encoding)
+{
+ printf ("0x%08x", encoding);
+ if (encoding == 0)
+ return;
+
+ switch (mdata->header.cputype)
+ {
+ case BFD_MACH_O_CPU_TYPE_X86_64:
+ dump_unwind_encoding_x86 (encoding, 8, unwind_x86_64_regs);
+ break;
+ case BFD_MACH_O_CPU_TYPE_I386:
+ dump_unwind_encoding_x86 (encoding, 4, unwind_x86_regs);
+ break;
+ case BFD_MACH_O_CPU_TYPE_ARM64:
+ dump_unwind_encoding_arm64 (encoding);
+ break;
+ default:
+ printf (" [unhandled cpu]");
+ break;
+ }
+ if (encoding & MACH_O_UNWIND_HAS_LSDA)
+ printf (" LSDA");
+ if (encoding & MACH_O_UNWIND_PERSONALITY_MASK)
+ printf (" PERS(%u)",
+ ((encoding & MACH_O_UNWIND_PERSONALITY_MASK)
+ >> MACH_O_UNWIND_PERSONALITY_SHIFT));
+}
+
+static void
+dump_obj_compact_unwind (bfd *abfd,
+ const unsigned char *content, bfd_size_type size)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ int is_64 = mdata->header.version == 2;
+ const unsigned char *p;
+
+ printf ("Compact unwind info:\n");
+ printf (" start length personality lsda\n");
+
+ if (is_64)
+ {
+ struct mach_o_compact_unwind_64 *e =
+ (struct mach_o_compact_unwind_64 *) content;
+
+ for (p = content; p < content + size; p += sizeof (*e))
+ {
+ e = (struct mach_o_compact_unwind_64 *) p;
+
+ putchar (' ');
+ printf_uint64 (bfd_get_64 (abfd, e->start));
+ printf (" %08lx", bfd_get_32 (abfd, e->length));
+ putchar (' ');
+ printf_uint64 (bfd_get_64 (abfd, e->personality));
+ putchar (' ');
+ printf_uint64 (bfd_get_64 (abfd, e->lsda));
+ putchar ('\n');
+
+ printf (" encoding: ");
+ dump_unwind_encoding (mdata, bfd_get_32 (abfd, e->encoding));
+ putchar ('\n');
+ }
+ }
+ else
+ {
+ printf ("unhandled\n");
+ }
+}
+
+static void
+dump_exe_compact_unwind (bfd *abfd,
+ const unsigned char *content, bfd_size_type size)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ struct mach_o_unwind_info_header *hdr;
+ unsigned int version;
+ unsigned int encodings_offset;
+ unsigned int encodings_count;
+ unsigned int personality_offset;
+ unsigned int personality_count;
+ unsigned int index_offset;
+ unsigned int index_count;
+ struct mach_o_unwind_index_entry *index_entry;
+ unsigned int i;
+
+ /* The header. */
+ printf ("Compact unwind info:\n");
+
+ hdr = (struct mach_o_unwind_info_header *) content;
+ if (size < sizeof (*hdr))
+ {
+ printf (" truncated!\n");
+ return;
+ }
+
+ version = bfd_get_32 (abfd, hdr->version);
+ if (version != MACH_O_UNWIND_SECTION_VERSION)
+ {
+ printf (" unknown version: %u\n", version);
+ return;
+ }
+ encodings_offset = bfd_get_32 (abfd, hdr->encodings_array_offset);
+ encodings_count = bfd_get_32 (abfd, hdr->encodings_array_count);
+ personality_offset = bfd_get_32 (abfd, hdr->personality_array_offset);
+ personality_count = bfd_get_32 (abfd, hdr->personality_array_count);
+ index_offset = bfd_get_32 (abfd, hdr->index_offset);
+ index_count = bfd_get_32 (abfd, hdr->index_count);
+ printf (" %u encodings, %u personalities, %u level-1 indexes:\n",
+ encodings_count, personality_count, index_count);
+
+ /* Personality. */
+ if (personality_count > 0)
+ {
+ const unsigned char *pers = content + personality_offset;
+
+ printf (" personalities\n");
+ for (i = 0; i < personality_count; i++)
+ printf (" %u: 0x%08x\n", i,
+ (unsigned) bfd_get_32 (abfd, pers + 4 * i));
+ }
+
+ /* Level-1 index. */
+ printf (" idx function level2 off lsda off\n");
+
+ index_entry = (struct mach_o_unwind_index_entry *) (content + index_offset);
+ for (i = 0; i < index_count; i++)
+ {
+ unsigned int func_offset;
+ unsigned int level2_offset;
+ unsigned int lsda_offset;
+
+ func_offset = bfd_get_32 (abfd, index_entry->function_offset);
+ level2_offset = bfd_get_32 (abfd, index_entry->second_level_offset);
+ lsda_offset = bfd_get_32 (abfd, index_entry->lsda_index_offset);
+ printf (" %3u 0x%08x 0x%08x 0x%08x\n",
+ i, func_offset, level2_offset, lsda_offset);
+ index_entry++;
+ }
+
+ /* Level-1 index. */
+ index_entry = (struct mach_o_unwind_index_entry *) (content + index_offset);
+ for (i = 0; i < index_count; i++)
+ {
+ unsigned int func_offset;
+ unsigned int level2_offset;
+ const unsigned char *level2;
+ unsigned int kind;
+
+ func_offset = bfd_get_32 (abfd, index_entry->function_offset);
+ level2_offset = bfd_get_32 (abfd, index_entry->second_level_offset);
+
+ /* No level-2 for this index (should be the last index). */
+ if (level2_offset == 0)
+ continue;
+
+ level2 = content + level2_offset;
+ kind = bfd_get_32 (abfd, level2);
+ switch (kind)
+ {
+ case MACH_O_UNWIND_SECOND_LEVEL_COMPRESSED:
+ {
+ struct mach_o_unwind_compressed_second_level_page_header *l2;
+ unsigned int entry_offset;
+ unsigned int entry_count;
+ unsigned int l2_encodings_offset;
+ unsigned int l2_encodings_count;
+ const unsigned char *en;
+ unsigned int j;
+
+ l2 = (struct mach_o_unwind_compressed_second_level_page_header *)
+ level2;
+ entry_offset = bfd_get_16 (abfd, l2->entry_page_offset);
+ entry_count = bfd_get_16 (abfd, l2->entry_count);
+ l2_encodings_offset = bfd_get_16 (abfd, l2->encodings_offset);
+ l2_encodings_count = bfd_get_16 (abfd, l2->encodings_count);
+
+ printf (" index %2u: compressed second level: "
+ "%u entries, %u encodings (at 0x%08x)\n",
+ i, entry_count, l2_encodings_count, l2_encodings_offset);
+ printf (" # function eidx encoding\n");
+
+ en = level2 + entry_offset;
+ for (j = 0; j < entry_count; j++)
+ {
+ unsigned int entry;
+ unsigned int en_func;
+ unsigned int enc_idx;
+ unsigned int encoding;
+ const unsigned char *enc_addr;
+
+ entry = bfd_get_32 (abfd, en);
+ en_func =
+ MACH_O_UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET (entry);
+ enc_idx =
+ MACH_O_UNWIND_INFO_COMPRESSED_ENTRY_ENCODING_INDEX (entry);
+ if (enc_idx < encodings_count)
+ enc_addr = content + encodings_offset
+ + 4 * enc_idx;
+ else
+ enc_addr = level2 + l2_encodings_offset
+ + 4 * (enc_idx - encodings_count);
+ encoding = bfd_get_32 (abfd, enc_addr);
+
+ printf (" %4u 0x%08x [%3u] ", j,
+ func_offset + en_func, enc_idx);
+ dump_unwind_encoding (mdata, encoding);
+ putchar ('\n');
+
+ en += 4;
+ }
+ }
+ break;
+
+ case MACH_O_UNWIND_SECOND_LEVEL_REGULAR:
+ {
+ struct mach_o_unwind_regular_second_level_page_header *l2;
+ struct mach_o_unwind_regular_second_level_entry *en;
+ unsigned int entry_offset;
+ unsigned int entry_count;
+ unsigned int j;
+
+ l2 = (struct mach_o_unwind_regular_second_level_page_header *)
+ level2;
+
+ entry_offset = bfd_get_16 (abfd, l2->entry_page_offset);
+ entry_count = bfd_get_16 (abfd, l2->entry_count);
+ printf (" index %2u: regular level 2 at 0x%04x, %u entries\n",
+ i, entry_offset, entry_count);
+ printf (" # function encoding\n");
+
+ en = (struct mach_o_unwind_regular_second_level_entry *)
+ (level2 + entry_offset);
+ for (j = 0; j < entry_count; j++)
+ {
+ unsigned int en_func;
+ unsigned int encoding;
+
+ en_func = bfd_get_32 (abfd, en->function_offset);
+ encoding = bfd_get_32 (abfd, en->encoding);
+ printf (" %-4u 0x%08x ", j, en_func);
+ dump_unwind_encoding (mdata, encoding);
+ putchar ('\n');
+ en++;
+ }
+ }
+ break;
+
+ default:
+ printf (" index %2u: unhandled second level format (%u)\n",
+ i, kind);
+ break;
+ }
+
+ {
+ struct mach_o_unwind_lsda_index_entry *lsda;
+ unsigned int lsda_offset;
+ unsigned int next_lsda_offset;
+ unsigned int nbr_lsda;
+ unsigned int j;
+
+ lsda_offset = bfd_get_32 (abfd, index_entry->lsda_index_offset);
+ next_lsda_offset = bfd_get_32 (abfd, index_entry[1].lsda_index_offset);
+ lsda = (struct mach_o_unwind_lsda_index_entry *)
+ (content + lsda_offset);
+ nbr_lsda = (next_lsda_offset - lsda_offset) / sizeof (*lsda);
+ for (j = 0; j < nbr_lsda; j++)
+ {
+ printf (" lsda %3u: function 0x%08x lsda 0x%08x\n",
+ j, (unsigned int) bfd_get_32 (abfd, lsda->function_offset),
+ (unsigned int) bfd_get_32 (abfd, lsda->lsda_offset));
+ lsda++;
+ }
+ }
+ index_entry++;
+ }
+}
+
+static void
+dump_section_content (bfd *abfd,
+ const char *segname, const char *sectname,
+ void (*dump)(bfd*, const unsigned char*, bfd_size_type))
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_load_command *cmd;
+
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
+ {
+ if (cmd->type == BFD_MACH_O_LC_SEGMENT
+ || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
+ {
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
+ bfd_mach_o_section *sec;
+ for (sec = seg->sect_head; sec != NULL; sec = sec->next)
+ if (strcmp (sec->segname, segname) == 0
+ && strcmp (sec->sectname, sectname) == 0)
+ {
+ bfd_size_type size;
+ asection *bfdsec = sec->bfdsection;
+ unsigned char *content;
+
+ size = bfd_section_size (bfdsec);
+ content = (unsigned char *) xmalloc (size);
+ bfd_get_section_contents (abfd, bfdsec, content, 0, size);
+
+ (*dump)(abfd, content, size);
+
+ free (content);
+ }
+ }
projects / deliverable / binutils-gdb.git / blobdiff