1 /* dwarf.c -- display DWARF contents of a BFD binary file
3 Free Software Foundation, Inc.
5 This file is part of GNU Binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
27 #include "libiberty.h"
29 static int have_frame_base;
30 static int need_base_address;
32 static unsigned int last_pointer_size = 0;
33 static int warned_about_missing_comp_units = FALSE;
35 static unsigned int num_debug_info_entries = 0;
36 static debug_info *debug_information = NULL;
38 dwarf_vma eh_addr_size;
44 int do_debug_pubnames;
48 int do_debug_frames_interp;
53 dwarf_vma (*byte_get) (unsigned char *, int);
56 byte_get_little_endian (unsigned char *field, int size)
64 return ((unsigned int) (field[0]))
65 | (((unsigned int) (field[1])) << 8);
68 return ((unsigned long) (field[0]))
69 | (((unsigned long) (field[1])) << 8)
70 | (((unsigned long) (field[2])) << 16)
71 | (((unsigned long) (field[3])) << 24);
74 if (sizeof (dwarf_vma) == 8)
75 return ((dwarf_vma) (field[0]))
76 | (((dwarf_vma) (field[1])) << 8)
77 | (((dwarf_vma) (field[2])) << 16)
78 | (((dwarf_vma) (field[3])) << 24)
79 | (((dwarf_vma) (field[4])) << 32)
80 | (((dwarf_vma) (field[5])) << 40)
81 | (((dwarf_vma) (field[6])) << 48)
82 | (((dwarf_vma) (field[7])) << 56);
83 else if (sizeof (dwarf_vma) == 4)
84 /* We want to extract data from an 8 byte wide field and
85 place it into a 4 byte wide field. Since this is a little
86 endian source we can just use the 4 byte extraction code. */
87 return ((unsigned long) (field[0]))
88 | (((unsigned long) (field[1])) << 8)
89 | (((unsigned long) (field[2])) << 16)
90 | (((unsigned long) (field[3])) << 24);
93 error (_("Unhandled data length: %d\n"), size);
99 byte_get_big_endian (unsigned char *field, int size)
107 return ((unsigned int) (field[1])) | (((int) (field[0])) << 8);
110 return ((unsigned long) (field[3]))
111 | (((unsigned long) (field[2])) << 8)
112 | (((unsigned long) (field[1])) << 16)
113 | (((unsigned long) (field[0])) << 24);
116 if (sizeof (dwarf_vma) == 8)
117 return ((dwarf_vma) (field[7]))
118 | (((dwarf_vma) (field[6])) << 8)
119 | (((dwarf_vma) (field[5])) << 16)
120 | (((dwarf_vma) (field[4])) << 24)
121 | (((dwarf_vma) (field[3])) << 32)
122 | (((dwarf_vma) (field[2])) << 40)
123 | (((dwarf_vma) (field[1])) << 48)
124 | (((dwarf_vma) (field[0])) << 56);
125 else if (sizeof (dwarf_vma) == 4)
127 /* Although we are extracing data from an 8 byte wide field,
128 we are returning only 4 bytes of data. */
130 return ((unsigned long) (field[3]))
131 | (((unsigned long) (field[2])) << 8)
132 | (((unsigned long) (field[1])) << 16)
133 | (((unsigned long) (field[0])) << 24);
137 error (_("Unhandled data length: %d\n"), size);
143 byte_get_signed (unsigned char *field, int size)
145 dwarf_vma x = byte_get (field, size);
150 return (x ^ 0x80) - 0x80;
152 return (x ^ 0x8000) - 0x8000;
154 return (x ^ 0x80000000) - 0x80000000;
162 static unsigned long int
163 read_leb128 (unsigned char *data, unsigned int *length_return, int sign)
165 unsigned long int result = 0;
166 unsigned int num_read = 0;
167 unsigned int shift = 0;
175 result |= ((unsigned long int) (byte & 0x7f)) << shift;
182 if (length_return != NULL)
183 *length_return = num_read;
185 if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40))
186 result |= -1L << shift;
191 typedef struct State_Machine_Registers
193 unsigned long address;
200 /* This variable hold the number of the last entry seen
201 in the File Table. */
202 unsigned int last_file_entry;
205 static SMR state_machine_regs;
208 reset_state_machine (int is_stmt)
210 state_machine_regs.address = 0;
211 state_machine_regs.file = 1;
212 state_machine_regs.line = 1;
213 state_machine_regs.column = 0;
214 state_machine_regs.is_stmt = is_stmt;
215 state_machine_regs.basic_block = 0;
216 state_machine_regs.end_sequence = 0;
217 state_machine_regs.last_file_entry = 0;
220 /* Handled an extend line op.
221 Returns the number of bytes read. */
224 process_extended_line_op (unsigned char *data, int is_stmt, int pointer_size)
226 unsigned char op_code;
227 unsigned int bytes_read;
232 len = read_leb128 (data, & bytes_read, 0);
237 warn (_("badly formed extended line op encountered!\n"));
244 printf (_(" Extended opcode %d: "), op_code);
248 case DW_LNE_end_sequence:
249 printf (_("End of Sequence\n\n"));
250 reset_state_machine (is_stmt);
253 case DW_LNE_set_address:
254 adr = byte_get (data, pointer_size);
255 printf (_("set Address to 0x%lx\n"), adr);
256 state_machine_regs.address = adr;
259 case DW_LNE_define_file:
260 printf (_(" define new File Table entry\n"));
261 printf (_(" Entry\tDir\tTime\tSize\tName\n"));
263 printf (_(" %d\t"), ++state_machine_regs.last_file_entry);
265 data += strlen ((char *) data) + 1;
266 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
268 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
270 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
271 printf (_("%s\n\n"), name);
275 printf (_("UNKNOWN: length %d\n"), len - bytes_read);
283 fetch_indirect_string (unsigned long offset)
285 struct dwarf_section *section = &debug_displays [str].section;
287 if (section->start == NULL)
288 return _("<no .debug_str section>");
290 /* DWARF sections under Mach-O have non-zero addresses. */
291 offset -= section->address;
292 if (offset > section->size)
294 warn (_("DW_FORM_strp offset too big: %lx\n"), offset);
295 return _("<offset is too big>");
298 return (const char *) section->start + offset;
301 /* FIXME: There are better and more efficient ways to handle
302 these structures. For now though, I just want something that
303 is simple to implement. */
304 typedef struct abbrev_attr
306 unsigned long attribute;
308 struct abbrev_attr *next;
312 typedef struct abbrev_entry
317 struct abbrev_attr *first_attr;
318 struct abbrev_attr *last_attr;
319 struct abbrev_entry *next;
323 static abbrev_entry *first_abbrev = NULL;
324 static abbrev_entry *last_abbrev = NULL;
329 abbrev_entry *abbrev;
331 for (abbrev = first_abbrev; abbrev;)
333 abbrev_entry *next = abbrev->next;
336 for (attr = abbrev->first_attr; attr;)
338 abbrev_attr *next = attr->next;
348 last_abbrev = first_abbrev = NULL;
352 add_abbrev (unsigned long number, unsigned long tag, int children)
356 entry = malloc (sizeof (*entry));
362 entry->entry = number;
364 entry->children = children;
365 entry->first_attr = NULL;
366 entry->last_attr = NULL;
369 if (first_abbrev == NULL)
370 first_abbrev = entry;
372 last_abbrev->next = entry;
378 add_abbrev_attr (unsigned long attribute, unsigned long form)
382 attr = malloc (sizeof (*attr));
388 attr->attribute = attribute;
392 if (last_abbrev->first_attr == NULL)
393 last_abbrev->first_attr = attr;
395 last_abbrev->last_attr->next = attr;
397 last_abbrev->last_attr = attr;
400 /* Processes the (partial) contents of a .debug_abbrev section.
401 Returns NULL if the end of the section was encountered.
402 Returns the address after the last byte read if the end of
403 an abbreviation set was found. */
405 static unsigned char *
406 process_abbrev_section (unsigned char *start, unsigned char *end)
408 if (first_abbrev != NULL)
413 unsigned int bytes_read;
416 unsigned long attribute;
419 entry = read_leb128 (start, & bytes_read, 0);
422 /* A single zero is supposed to end the section according
423 to the standard. If there's more, then signal that to
426 return start == end ? NULL : start;
428 tag = read_leb128 (start, & bytes_read, 0);
433 add_abbrev (entry, tag, children);
439 attribute = read_leb128 (start, & bytes_read, 0);
442 form = read_leb128 (start, & bytes_read, 0);
446 add_abbrev_attr (attribute, form);
448 while (attribute != 0);
455 get_TAG_name (unsigned long tag)
459 case DW_TAG_padding: return "DW_TAG_padding";
460 case DW_TAG_array_type: return "DW_TAG_array_type";
461 case DW_TAG_class_type: return "DW_TAG_class_type";
462 case DW_TAG_entry_point: return "DW_TAG_entry_point";
463 case DW_TAG_enumeration_type: return "DW_TAG_enumeration_type";
464 case DW_TAG_formal_parameter: return "DW_TAG_formal_parameter";
465 case DW_TAG_imported_declaration: return "DW_TAG_imported_declaration";
466 case DW_TAG_label: return "DW_TAG_label";
467 case DW_TAG_lexical_block: return "DW_TAG_lexical_block";
468 case DW_TAG_member: return "DW_TAG_member";
469 case DW_TAG_pointer_type: return "DW_TAG_pointer_type";
470 case DW_TAG_reference_type: return "DW_TAG_reference_type";
471 case DW_TAG_compile_unit: return "DW_TAG_compile_unit";
472 case DW_TAG_string_type: return "DW_TAG_string_type";
473 case DW_TAG_structure_type: return "DW_TAG_structure_type";
474 case DW_TAG_subroutine_type: return "DW_TAG_subroutine_type";
475 case DW_TAG_typedef: return "DW_TAG_typedef";
476 case DW_TAG_union_type: return "DW_TAG_union_type";
477 case DW_TAG_unspecified_parameters: return "DW_TAG_unspecified_parameters";
478 case DW_TAG_variant: return "DW_TAG_variant";
479 case DW_TAG_common_block: return "DW_TAG_common_block";
480 case DW_TAG_common_inclusion: return "DW_TAG_common_inclusion";
481 case DW_TAG_inheritance: return "DW_TAG_inheritance";
482 case DW_TAG_inlined_subroutine: return "DW_TAG_inlined_subroutine";
483 case DW_TAG_module: return "DW_TAG_module";
484 case DW_TAG_ptr_to_member_type: return "DW_TAG_ptr_to_member_type";
485 case DW_TAG_set_type: return "DW_TAG_set_type";
486 case DW_TAG_subrange_type: return "DW_TAG_subrange_type";
487 case DW_TAG_with_stmt: return "DW_TAG_with_stmt";
488 case DW_TAG_access_declaration: return "DW_TAG_access_declaration";
489 case DW_TAG_base_type: return "DW_TAG_base_type";
490 case DW_TAG_catch_block: return "DW_TAG_catch_block";
491 case DW_TAG_const_type: return "DW_TAG_const_type";
492 case DW_TAG_constant: return "DW_TAG_constant";
493 case DW_TAG_enumerator: return "DW_TAG_enumerator";
494 case DW_TAG_file_type: return "DW_TAG_file_type";
495 case DW_TAG_friend: return "DW_TAG_friend";
496 case DW_TAG_namelist: return "DW_TAG_namelist";
497 case DW_TAG_namelist_item: return "DW_TAG_namelist_item";
498 case DW_TAG_packed_type: return "DW_TAG_packed_type";
499 case DW_TAG_subprogram: return "DW_TAG_subprogram";
500 case DW_TAG_template_type_param: return "DW_TAG_template_type_param";
501 case DW_TAG_template_value_param: return "DW_TAG_template_value_param";
502 case DW_TAG_thrown_type: return "DW_TAG_thrown_type";
503 case DW_TAG_try_block: return "DW_TAG_try_block";
504 case DW_TAG_variant_part: return "DW_TAG_variant_part";
505 case DW_TAG_variable: return "DW_TAG_variable";
506 case DW_TAG_volatile_type: return "DW_TAG_volatile_type";
507 case DW_TAG_MIPS_loop: return "DW_TAG_MIPS_loop";
508 case DW_TAG_format_label: return "DW_TAG_format_label";
509 case DW_TAG_function_template: return "DW_TAG_function_template";
510 case DW_TAG_class_template: return "DW_TAG_class_template";
511 /* DWARF 2.1 values. */
512 case DW_TAG_dwarf_procedure: return "DW_TAG_dwarf_procedure";
513 case DW_TAG_restrict_type: return "DW_TAG_restrict_type";
514 case DW_TAG_interface_type: return "DW_TAG_interface_type";
515 case DW_TAG_namespace: return "DW_TAG_namespace";
516 case DW_TAG_imported_module: return "DW_TAG_imported_module";
517 case DW_TAG_unspecified_type: return "DW_TAG_unspecified_type";
518 case DW_TAG_partial_unit: return "DW_TAG_partial_unit";
519 case DW_TAG_imported_unit: return "DW_TAG_imported_unit";
521 case DW_TAG_upc_shared_type: return "DW_TAG_upc_shared_type";
522 case DW_TAG_upc_strict_type: return "DW_TAG_upc_strict_type";
523 case DW_TAG_upc_relaxed_type: return "DW_TAG_upc_relaxed_type";
526 static char buffer[100];
528 snprintf (buffer, sizeof (buffer), _("Unknown TAG value: %lx"), tag);
535 get_FORM_name (unsigned long form)
539 case DW_FORM_addr: return "DW_FORM_addr";
540 case DW_FORM_block2: return "DW_FORM_block2";
541 case DW_FORM_block4: return "DW_FORM_block4";
542 case DW_FORM_data2: return "DW_FORM_data2";
543 case DW_FORM_data4: return "DW_FORM_data4";
544 case DW_FORM_data8: return "DW_FORM_data8";
545 case DW_FORM_string: return "DW_FORM_string";
546 case DW_FORM_block: return "DW_FORM_block";
547 case DW_FORM_block1: return "DW_FORM_block1";
548 case DW_FORM_data1: return "DW_FORM_data1";
549 case DW_FORM_flag: return "DW_FORM_flag";
550 case DW_FORM_sdata: return "DW_FORM_sdata";
551 case DW_FORM_strp: return "DW_FORM_strp";
552 case DW_FORM_udata: return "DW_FORM_udata";
553 case DW_FORM_ref_addr: return "DW_FORM_ref_addr";
554 case DW_FORM_ref1: return "DW_FORM_ref1";
555 case DW_FORM_ref2: return "DW_FORM_ref2";
556 case DW_FORM_ref4: return "DW_FORM_ref4";
557 case DW_FORM_ref8: return "DW_FORM_ref8";
558 case DW_FORM_ref_udata: return "DW_FORM_ref_udata";
559 case DW_FORM_indirect: return "DW_FORM_indirect";
562 static char buffer[100];
564 snprintf (buffer, sizeof (buffer), _("Unknown FORM value: %lx"), form);
570 static unsigned char *
571 display_block (unsigned char *data, unsigned long length)
573 printf (_(" %lu byte block: "), length);
576 printf ("%lx ", (unsigned long) byte_get (data++, 1));
582 decode_location_expression (unsigned char * data,
583 unsigned int pointer_size,
584 unsigned long length,
585 unsigned long cu_offset)
588 unsigned int bytes_read;
589 unsigned long uvalue;
590 unsigned char *end = data + length;
591 int need_frame_base = 0;
600 printf ("DW_OP_addr: %lx",
601 (unsigned long) byte_get (data, pointer_size));
602 data += pointer_size;
605 printf ("DW_OP_deref");
608 printf ("DW_OP_const1u: %lu", (unsigned long) byte_get (data++, 1));
611 printf ("DW_OP_const1s: %ld", (long) byte_get_signed (data++, 1));
614 printf ("DW_OP_const2u: %lu", (unsigned long) byte_get (data, 2));
618 printf ("DW_OP_const2s: %ld", (long) byte_get_signed (data, 2));
622 printf ("DW_OP_const4u: %lu", (unsigned long) byte_get (data, 4));
626 printf ("DW_OP_const4s: %ld", (long) byte_get_signed (data, 4));
630 printf ("DW_OP_const8u: %lu %lu", (unsigned long) byte_get (data, 4),
631 (unsigned long) byte_get (data + 4, 4));
635 printf ("DW_OP_const8s: %ld %ld", (long) byte_get (data, 4),
636 (long) byte_get (data + 4, 4));
640 printf ("DW_OP_constu: %lu", read_leb128 (data, &bytes_read, 0));
644 printf ("DW_OP_consts: %ld", read_leb128 (data, &bytes_read, 1));
648 printf ("DW_OP_dup");
651 printf ("DW_OP_drop");
654 printf ("DW_OP_over");
657 printf ("DW_OP_pick: %ld", (unsigned long) byte_get (data++, 1));
660 printf ("DW_OP_swap");
663 printf ("DW_OP_rot");
666 printf ("DW_OP_xderef");
669 printf ("DW_OP_abs");
672 printf ("DW_OP_and");
675 printf ("DW_OP_div");
678 printf ("DW_OP_minus");
681 printf ("DW_OP_mod");
684 printf ("DW_OP_mul");
687 printf ("DW_OP_neg");
690 printf ("DW_OP_not");
696 printf ("DW_OP_plus");
698 case DW_OP_plus_uconst:
699 printf ("DW_OP_plus_uconst: %lu",
700 read_leb128 (data, &bytes_read, 0));
704 printf ("DW_OP_shl");
707 printf ("DW_OP_shr");
710 printf ("DW_OP_shra");
713 printf ("DW_OP_xor");
716 printf ("DW_OP_bra: %ld", (long) byte_get_signed (data, 2));
738 printf ("DW_OP_skip: %ld", (long) byte_get_signed (data, 2));
774 printf ("DW_OP_lit%d", op - DW_OP_lit0);
809 printf ("DW_OP_reg%d", op - DW_OP_reg0);
844 printf ("DW_OP_breg%d: %ld", op - DW_OP_breg0,
845 read_leb128 (data, &bytes_read, 1));
850 printf ("DW_OP_regx: %lu", read_leb128 (data, &bytes_read, 0));
855 printf ("DW_OP_fbreg: %ld", read_leb128 (data, &bytes_read, 1));
859 uvalue = read_leb128 (data, &bytes_read, 0);
861 printf ("DW_OP_bregx: %lu %ld", uvalue,
862 read_leb128 (data, &bytes_read, 1));
866 printf ("DW_OP_piece: %lu", read_leb128 (data, &bytes_read, 0));
869 case DW_OP_deref_size:
870 printf ("DW_OP_deref_size: %ld", (long) byte_get (data++, 1));
872 case DW_OP_xderef_size:
873 printf ("DW_OP_xderef_size: %ld", (long) byte_get (data++, 1));
876 printf ("DW_OP_nop");
879 /* DWARF 3 extensions. */
880 case DW_OP_push_object_address:
881 printf ("DW_OP_push_object_address");
884 /* XXX: Strictly speaking for 64-bit DWARF3 files
885 this ought to be an 8-byte wide computation. */
886 printf ("DW_OP_call2: <%lx>", (long) byte_get (data, 2) + cu_offset);
890 /* XXX: Strictly speaking for 64-bit DWARF3 files
891 this ought to be an 8-byte wide computation. */
892 printf ("DW_OP_call4: <%lx>", (long) byte_get (data, 4) + cu_offset);
896 printf ("DW_OP_call_ref");
899 /* GNU extensions. */
900 case DW_OP_GNU_push_tls_address:
901 printf ("DW_OP_GNU_push_tls_address");
905 if (op >= DW_OP_lo_user
906 && op <= DW_OP_hi_user)
907 printf (_("(User defined location op)"));
909 printf (_("(Unknown location op)"));
910 /* No way to tell where the next op is, so just bail. */
911 return need_frame_base;
914 /* Separate the ops. */
919 return need_frame_base;
922 static unsigned char *
923 read_and_display_attr_value (unsigned long attribute,
926 unsigned long cu_offset,
927 unsigned long pointer_size,
928 unsigned long offset_size,
930 debug_info *debug_info_p,
933 unsigned long uvalue = 0;
934 unsigned char *block_start = NULL;
935 unsigned int bytes_read;
942 case DW_FORM_ref_addr:
943 if (dwarf_version == 2)
945 uvalue = byte_get (data, pointer_size);
946 data += pointer_size;
948 else if (dwarf_version == 3)
950 uvalue = byte_get (data, offset_size);
955 error (_("Internal error: DWARF version is not 2 or 3.\n"));
960 uvalue = byte_get (data, pointer_size);
961 data += pointer_size;
965 uvalue = byte_get (data, offset_size);
972 uvalue = byte_get (data++, 1);
977 uvalue = byte_get (data, 2);
983 uvalue = byte_get (data, 4);
988 uvalue = read_leb128 (data, & bytes_read, 1);
992 case DW_FORM_ref_udata:
994 uvalue = read_leb128 (data, & bytes_read, 0);
998 case DW_FORM_indirect:
999 form = read_leb128 (data, & bytes_read, 0);
1002 printf (" %s", get_FORM_name (form));
1003 return read_and_display_attr_value (attribute, form, data,
1004 cu_offset, pointer_size,
1005 offset_size, dwarf_version,
1006 debug_info_p, do_loc);
1011 case DW_FORM_ref_addr:
1013 printf (" <#%lx>", uvalue);
1019 case DW_FORM_ref_udata:
1021 printf (" <%lx>", uvalue + cu_offset);
1027 printf (" %#lx", uvalue);
1036 printf (" %ld", uvalue);
1043 uvalue = byte_get (data, 4);
1044 printf (" %lx", uvalue);
1045 printf (" %lx", (unsigned long) byte_get (data + 4, 4));
1047 if ((do_loc || do_debug_loc || do_debug_ranges)
1048 && num_debug_info_entries == 0)
1050 if (sizeof (uvalue) == 8)
1051 uvalue = byte_get (data, 8);
1053 error (_("DW_FORM_data8 is unsupported when sizeof (unsigned long) != 8\n"));
1058 case DW_FORM_string:
1060 printf (" %s", data);
1061 data += strlen ((char *) data) + 1;
1065 uvalue = read_leb128 (data, & bytes_read, 0);
1066 block_start = data + bytes_read;
1068 data = block_start + uvalue;
1070 data = display_block (block_start, uvalue);
1073 case DW_FORM_block1:
1074 uvalue = byte_get (data, 1);
1075 block_start = data + 1;
1077 data = block_start + uvalue;
1079 data = display_block (block_start, uvalue);
1082 case DW_FORM_block2:
1083 uvalue = byte_get (data, 2);
1084 block_start = data + 2;
1086 data = block_start + uvalue;
1088 data = display_block (block_start, uvalue);
1091 case DW_FORM_block4:
1092 uvalue = byte_get (data, 4);
1093 block_start = data + 4;
1095 data = block_start + uvalue;
1097 data = display_block (block_start, uvalue);
1102 printf (_(" (indirect string, offset: 0x%lx): %s"),
1103 uvalue, fetch_indirect_string (uvalue));
1106 case DW_FORM_indirect:
1107 /* Handled above. */
1111 warn (_("Unrecognized form: %lu\n"), form);
1115 /* For some attributes we can display further information. */
1116 if ((do_loc || do_debug_loc || do_debug_ranges)
1117 && num_debug_info_entries == 0)
1121 case DW_AT_frame_base:
1122 have_frame_base = 1;
1123 case DW_AT_location:
1124 case DW_AT_data_member_location:
1125 case DW_AT_vtable_elem_location:
1126 case DW_AT_allocated:
1127 case DW_AT_associated:
1128 case DW_AT_data_location:
1130 case DW_AT_upper_bound:
1131 case DW_AT_lower_bound:
1132 if (form == DW_FORM_data4 || form == DW_FORM_data8)
1134 /* Process location list. */
1135 unsigned int max = debug_info_p->max_loc_offsets;
1136 unsigned int num = debug_info_p->num_loc_offsets;
1138 if (max == 0 || num >= max)
1141 debug_info_p->loc_offsets
1142 = xcrealloc (debug_info_p->loc_offsets,
1143 max, sizeof (*debug_info_p->loc_offsets));
1144 debug_info_p->have_frame_base
1145 = xcrealloc (debug_info_p->have_frame_base,
1146 max, sizeof (*debug_info_p->have_frame_base));
1147 debug_info_p->max_loc_offsets = max;
1149 debug_info_p->loc_offsets [num] = uvalue;
1150 debug_info_p->have_frame_base [num] = have_frame_base;
1151 debug_info_p->num_loc_offsets++;
1156 if (need_base_address)
1157 debug_info_p->base_address = uvalue;
1161 if (form == DW_FORM_data4 || form == DW_FORM_data8)
1163 /* Process range list. */
1164 unsigned int max = debug_info_p->max_range_lists;
1165 unsigned int num = debug_info_p->num_range_lists;
1167 if (max == 0 || num >= max)
1170 debug_info_p->range_lists
1171 = xcrealloc (debug_info_p->range_lists,
1172 max, sizeof (*debug_info_p->range_lists));
1173 debug_info_p->max_range_lists = max;
1175 debug_info_p->range_lists [num] = uvalue;
1176 debug_info_p->num_range_lists++;
1195 case DW_INL_not_inlined:
1196 printf (_("(not inlined)"));
1198 case DW_INL_inlined:
1199 printf (_("(inlined)"));
1201 case DW_INL_declared_not_inlined:
1202 printf (_("(declared as inline but ignored)"));
1204 case DW_INL_declared_inlined:
1205 printf (_("(declared as inline and inlined)"));
1208 printf (_(" (Unknown inline attribute value: %lx)"), uvalue);
1213 case DW_AT_language:
1216 case DW_LANG_C: printf ("(non-ANSI C)"); break;
1217 case DW_LANG_C89: printf ("(ANSI C)"); break;
1218 case DW_LANG_C_plus_plus: printf ("(C++)"); break;
1219 case DW_LANG_Fortran77: printf ("(FORTRAN 77)"); break;
1220 case DW_LANG_Fortran90: printf ("(Fortran 90)"); break;
1221 case DW_LANG_Modula2: printf ("(Modula 2)"); break;
1222 case DW_LANG_Pascal83: printf ("(ANSI Pascal)"); break;
1223 case DW_LANG_Ada83: printf ("(Ada)"); break;
1224 case DW_LANG_Cobol74: printf ("(Cobol 74)"); break;
1225 case DW_LANG_Cobol85: printf ("(Cobol 85)"); break;
1226 /* DWARF 2.1 values. */
1227 case DW_LANG_C99: printf ("(ANSI C99)"); break;
1228 case DW_LANG_Ada95: printf ("(ADA 95)"); break;
1229 case DW_LANG_Fortran95: printf ("(Fortran 95)"); break;
1230 /* MIPS extension. */
1231 case DW_LANG_Mips_Assembler: printf ("(MIPS assembler)"); break;
1232 /* UPC extension. */
1233 case DW_LANG_Upc: printf ("(Unified Parallel C)"); break;
1235 printf ("(Unknown: %lx)", uvalue);
1240 case DW_AT_encoding:
1243 case DW_ATE_void: printf ("(void)"); break;
1244 case DW_ATE_address: printf ("(machine address)"); break;
1245 case DW_ATE_boolean: printf ("(boolean)"); break;
1246 case DW_ATE_complex_float: printf ("(complex float)"); break;
1247 case DW_ATE_float: printf ("(float)"); break;
1248 case DW_ATE_signed: printf ("(signed)"); break;
1249 case DW_ATE_signed_char: printf ("(signed char)"); break;
1250 case DW_ATE_unsigned: printf ("(unsigned)"); break;
1251 case DW_ATE_unsigned_char: printf ("(unsigned char)"); break;
1252 /* DWARF 2.1 value. */
1253 case DW_ATE_imaginary_float: printf ("(imaginary float)"); break;
1254 case DW_ATE_decimal_float: printf ("(decimal float)"); break;
1256 if (uvalue >= DW_ATE_lo_user
1257 && uvalue <= DW_ATE_hi_user)
1258 printf ("(user defined type)");
1260 printf ("(unknown type)");
1265 case DW_AT_accessibility:
1268 case DW_ACCESS_public: printf ("(public)"); break;
1269 case DW_ACCESS_protected: printf ("(protected)"); break;
1270 case DW_ACCESS_private: printf ("(private)"); break;
1272 printf ("(unknown accessibility)");
1277 case DW_AT_visibility:
1280 case DW_VIS_local: printf ("(local)"); break;
1281 case DW_VIS_exported: printf ("(exported)"); break;
1282 case DW_VIS_qualified: printf ("(qualified)"); break;
1283 default: printf ("(unknown visibility)"); break;
1287 case DW_AT_virtuality:
1290 case DW_VIRTUALITY_none: printf ("(none)"); break;
1291 case DW_VIRTUALITY_virtual: printf ("(virtual)"); break;
1292 case DW_VIRTUALITY_pure_virtual:printf ("(pure_virtual)"); break;
1293 default: printf ("(unknown virtuality)"); break;
1297 case DW_AT_identifier_case:
1300 case DW_ID_case_sensitive: printf ("(case_sensitive)"); break;
1301 case DW_ID_up_case: printf ("(up_case)"); break;
1302 case DW_ID_down_case: printf ("(down_case)"); break;
1303 case DW_ID_case_insensitive: printf ("(case_insensitive)"); break;
1304 default: printf ("(unknown case)"); break;
1308 case DW_AT_calling_convention:
1311 case DW_CC_normal: printf ("(normal)"); break;
1312 case DW_CC_program: printf ("(program)"); break;
1313 case DW_CC_nocall: printf ("(nocall)"); break;
1315 if (uvalue >= DW_CC_lo_user
1316 && uvalue <= DW_CC_hi_user)
1317 printf ("(user defined)");
1319 printf ("(unknown convention)");
1323 case DW_AT_ordering:
1326 case -1: printf ("(undefined)"); break;
1327 case 0: printf ("(row major)"); break;
1328 case 1: printf ("(column major)"); break;
1332 case DW_AT_frame_base:
1333 have_frame_base = 1;
1334 case DW_AT_location:
1335 case DW_AT_data_member_location:
1336 case DW_AT_vtable_elem_location:
1337 case DW_AT_allocated:
1338 case DW_AT_associated:
1339 case DW_AT_data_location:
1341 case DW_AT_upper_bound:
1342 case DW_AT_lower_bound:
1345 int need_frame_base;
1348 need_frame_base = decode_location_expression (block_start,
1353 if (need_frame_base && !have_frame_base)
1354 printf (_(" [without DW_AT_frame_base]"));
1356 else if (form == DW_FORM_data4 || form == DW_FORM_data8)
1357 printf (_("(location list)"));
1369 get_AT_name (unsigned long attribute)
1373 case DW_AT_sibling: return "DW_AT_sibling";
1374 case DW_AT_location: return "DW_AT_location";
1375 case DW_AT_name: return "DW_AT_name";
1376 case DW_AT_ordering: return "DW_AT_ordering";
1377 case DW_AT_subscr_data: return "DW_AT_subscr_data";
1378 case DW_AT_byte_size: return "DW_AT_byte_size";
1379 case DW_AT_bit_offset: return "DW_AT_bit_offset";
1380 case DW_AT_bit_size: return "DW_AT_bit_size";
1381 case DW_AT_element_list: return "DW_AT_element_list";
1382 case DW_AT_stmt_list: return "DW_AT_stmt_list";
1383 case DW_AT_low_pc: return "DW_AT_low_pc";
1384 case DW_AT_high_pc: return "DW_AT_high_pc";
1385 case DW_AT_language: return "DW_AT_language";
1386 case DW_AT_member: return "DW_AT_member";
1387 case DW_AT_discr: return "DW_AT_discr";
1388 case DW_AT_discr_value: return "DW_AT_discr_value";
1389 case DW_AT_visibility: return "DW_AT_visibility";
1390 case DW_AT_import: return "DW_AT_import";
1391 case DW_AT_string_length: return "DW_AT_string_length";
1392 case DW_AT_common_reference: return "DW_AT_common_reference";
1393 case DW_AT_comp_dir: return "DW_AT_comp_dir";
1394 case DW_AT_const_value: return "DW_AT_const_value";
1395 case DW_AT_containing_type: return "DW_AT_containing_type";
1396 case DW_AT_default_value: return "DW_AT_default_value";
1397 case DW_AT_inline: return "DW_AT_inline";
1398 case DW_AT_is_optional: return "DW_AT_is_optional";
1399 case DW_AT_lower_bound: return "DW_AT_lower_bound";
1400 case DW_AT_producer: return "DW_AT_producer";
1401 case DW_AT_prototyped: return "DW_AT_prototyped";
1402 case DW_AT_return_addr: return "DW_AT_return_addr";
1403 case DW_AT_start_scope: return "DW_AT_start_scope";
1404 case DW_AT_stride_size: return "DW_AT_stride_size";
1405 case DW_AT_upper_bound: return "DW_AT_upper_bound";
1406 case DW_AT_abstract_origin: return "DW_AT_abstract_origin";
1407 case DW_AT_accessibility: return "DW_AT_accessibility";
1408 case DW_AT_address_class: return "DW_AT_address_class";
1409 case DW_AT_artificial: return "DW_AT_artificial";
1410 case DW_AT_base_types: return "DW_AT_base_types";
1411 case DW_AT_calling_convention: return "DW_AT_calling_convention";
1412 case DW_AT_count: return "DW_AT_count";
1413 case DW_AT_data_member_location: return "DW_AT_data_member_location";
1414 case DW_AT_decl_column: return "DW_AT_decl_column";
1415 case DW_AT_decl_file: return "DW_AT_decl_file";
1416 case DW_AT_decl_line: return "DW_AT_decl_line";
1417 case DW_AT_declaration: return "DW_AT_declaration";
1418 case DW_AT_discr_list: return "DW_AT_discr_list";
1419 case DW_AT_encoding: return "DW_AT_encoding";
1420 case DW_AT_external: return "DW_AT_external";
1421 case DW_AT_frame_base: return "DW_AT_frame_base";
1422 case DW_AT_friend: return "DW_AT_friend";
1423 case DW_AT_identifier_case: return "DW_AT_identifier_case";
1424 case DW_AT_macro_info: return "DW_AT_macro_info";
1425 case DW_AT_namelist_items: return "DW_AT_namelist_items";
1426 case DW_AT_priority: return "DW_AT_priority";
1427 case DW_AT_segment: return "DW_AT_segment";
1428 case DW_AT_specification: return "DW_AT_specification";
1429 case DW_AT_static_link: return "DW_AT_static_link";
1430 case DW_AT_type: return "DW_AT_type";
1431 case DW_AT_use_location: return "DW_AT_use_location";
1432 case DW_AT_variable_parameter: return "DW_AT_variable_parameter";
1433 case DW_AT_virtuality: return "DW_AT_virtuality";
1434 case DW_AT_vtable_elem_location: return "DW_AT_vtable_elem_location";
1435 /* DWARF 2.1 values. */
1436 case DW_AT_allocated: return "DW_AT_allocated";
1437 case DW_AT_associated: return "DW_AT_associated";
1438 case DW_AT_data_location: return "DW_AT_data_location";
1439 case DW_AT_stride: return "DW_AT_stride";
1440 case DW_AT_entry_pc: return "DW_AT_entry_pc";
1441 case DW_AT_use_UTF8: return "DW_AT_use_UTF8";
1442 case DW_AT_extension: return "DW_AT_extension";
1443 case DW_AT_ranges: return "DW_AT_ranges";
1444 case DW_AT_trampoline: return "DW_AT_trampoline";
1445 case DW_AT_call_column: return "DW_AT_call_column";
1446 case DW_AT_call_file: return "DW_AT_call_file";
1447 case DW_AT_call_line: return "DW_AT_call_line";
1448 /* SGI/MIPS extensions. */
1449 case DW_AT_MIPS_fde: return "DW_AT_MIPS_fde";
1450 case DW_AT_MIPS_loop_begin: return "DW_AT_MIPS_loop_begin";
1451 case DW_AT_MIPS_tail_loop_begin: return "DW_AT_MIPS_tail_loop_begin";
1452 case DW_AT_MIPS_epilog_begin: return "DW_AT_MIPS_epilog_begin";
1453 case DW_AT_MIPS_loop_unroll_factor: return "DW_AT_MIPS_loop_unroll_factor";
1454 case DW_AT_MIPS_software_pipeline_depth:
1455 return "DW_AT_MIPS_software_pipeline_depth";
1456 case DW_AT_MIPS_linkage_name: return "DW_AT_MIPS_linkage_name";
1457 case DW_AT_MIPS_stride: return "DW_AT_MIPS_stride";
1458 case DW_AT_MIPS_abstract_name: return "DW_AT_MIPS_abstract_name";
1459 case DW_AT_MIPS_clone_origin: return "DW_AT_MIPS_clone_origin";
1460 case DW_AT_MIPS_has_inlines: return "DW_AT_MIPS_has_inlines";
1461 /* GNU extensions. */
1462 case DW_AT_sf_names: return "DW_AT_sf_names";
1463 case DW_AT_src_info: return "DW_AT_src_info";
1464 case DW_AT_mac_info: return "DW_AT_mac_info";
1465 case DW_AT_src_coords: return "DW_AT_src_coords";
1466 case DW_AT_body_begin: return "DW_AT_body_begin";
1467 case DW_AT_body_end: return "DW_AT_body_end";
1468 case DW_AT_GNU_vector: return "DW_AT_GNU_vector";
1469 /* UPC extension. */
1470 case DW_AT_upc_threads_scaled: return "DW_AT_upc_threads_scaled";
1473 static char buffer[100];
1475 snprintf (buffer, sizeof (buffer), _("Unknown AT value: %lx"),
1482 static unsigned char *
1483 read_and_display_attr (unsigned long attribute,
1485 unsigned char *data,
1486 unsigned long cu_offset,
1487 unsigned long pointer_size,
1488 unsigned long offset_size,
1490 debug_info *debug_info_p,
1494 printf (" %-18s:", get_AT_name (attribute));
1495 data = read_and_display_attr_value (attribute, form, data, cu_offset,
1496 pointer_size, offset_size,
1497 dwarf_version, debug_info_p,
1505 /* Process the contents of a .debug_info section. If do_loc is non-zero
1506 then we are scanning for location lists and we do not want to display
1507 anything to the user. */
1510 process_debug_info (struct dwarf_section *section, void *file,
1513 unsigned char *start = section->start;
1514 unsigned char *end = start + section->size;
1515 unsigned char *section_begin;
1517 unsigned int num_units = 0;
1519 if ((do_loc || do_debug_loc || do_debug_ranges)
1520 && num_debug_info_entries == 0)
1522 unsigned long length;
1524 /* First scan the section to get the number of comp units. */
1525 for (section_begin = start, num_units = 0; section_begin < end;
1528 /* Read the first 4 bytes. For a 32-bit DWARF section, this
1529 will be the length. For a 64-bit DWARF section, it'll be
1530 the escape code 0xffffffff followed by an 8 byte length. */
1531 length = byte_get (section_begin, 4);
1533 if (length == 0xffffffff)
1535 length = byte_get (section_begin + 4, 8);
1536 section_begin += length + 12;
1539 section_begin += length + 4;
1544 error (_("No comp units in %s section ?"), section->name);
1548 /* Then allocate an array to hold the information. */
1549 debug_information = cmalloc (num_units,
1550 sizeof (* debug_information));
1551 if (debug_information == NULL)
1553 error (_("Not enough memory for a debug info array of %u entries"),
1561 printf (_("The section %s contains:\n\n"), section->name);
1563 load_debug_section (str, file);
1566 load_debug_section (abbrev, file);
1567 if (debug_displays [abbrev].section.start == NULL)
1569 warn (_("Unable to locate %s section!\n"),
1570 debug_displays [abbrev].section.name);
1574 for (section_begin = start, unit = 0; start < end; unit++)
1576 DWARF2_Internal_CompUnit compunit;
1577 unsigned char *hdrptr;
1578 unsigned char *cu_abbrev_offset_ptr;
1579 unsigned char *tags;
1581 unsigned long cu_offset;
1583 int initial_length_size;
1587 compunit.cu_length = byte_get (hdrptr, 4);
1590 if (compunit.cu_length == 0xffffffff)
1592 compunit.cu_length = byte_get (hdrptr, 8);
1595 initial_length_size = 12;
1600 initial_length_size = 4;
1603 compunit.cu_version = byte_get (hdrptr, 2);
1606 cu_offset = start - section_begin;
1607 start += compunit.cu_length + initial_length_size;
1609 cu_abbrev_offset_ptr = hdrptr;
1610 compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size);
1611 hdrptr += offset_size;
1613 compunit.cu_pointer_size = byte_get (hdrptr, 1);
1615 if ((do_loc || do_debug_loc || do_debug_ranges)
1616 && num_debug_info_entries == 0)
1618 debug_information [unit].cu_offset = cu_offset;
1619 debug_information [unit].pointer_size
1620 = compunit.cu_pointer_size;
1621 debug_information [unit].base_address = 0;
1622 debug_information [unit].loc_offsets = NULL;
1623 debug_information [unit].have_frame_base = NULL;
1624 debug_information [unit].max_loc_offsets = 0;
1625 debug_information [unit].num_loc_offsets = 0;
1626 debug_information [unit].range_lists = NULL;
1627 debug_information [unit].max_range_lists= 0;
1628 debug_information [unit].num_range_lists = 0;
1635 printf (_(" Compilation Unit @ offset 0x%lx:\n"), cu_offset);
1636 printf (_(" Length: %ld\n"), compunit.cu_length);
1637 printf (_(" Version: %d\n"), compunit.cu_version);
1638 printf (_(" Abbrev Offset: %ld\n"), compunit.cu_abbrev_offset);
1639 printf (_(" Pointer Size: %d\n"), compunit.cu_pointer_size);
1642 if (compunit.cu_version != 2 && compunit.cu_version != 3)
1644 warn (_("Only version 2 and 3 DWARF debug information is currently supported.\n"));
1650 /* Process the abbrevs used by this compilation unit. DWARF
1651 sections under Mach-O have non-zero addresses. */
1652 process_abbrev_section
1653 ((unsigned char *) debug_displays [abbrev].section.start
1654 + compunit.cu_abbrev_offset - debug_displays [abbrev].section.address,
1655 (unsigned char *) debug_displays [abbrev].section.start
1656 + debug_displays [abbrev].section.size);
1659 while (tags < start)
1661 unsigned int bytes_read;
1662 unsigned long abbrev_number;
1663 abbrev_entry *entry;
1666 abbrev_number = read_leb128 (tags, & bytes_read, 0);
1669 /* A null DIE marks the end of a list of children. */
1670 if (abbrev_number == 0)
1676 /* Scan through the abbreviation list until we reach the
1678 for (entry = first_abbrev;
1679 entry && entry->entry != abbrev_number;
1680 entry = entry->next)
1685 warn (_("Unable to locate entry %lu in the abbreviation table\n"),
1691 printf (_(" <%d><%lx>: Abbrev Number: %lu (%s)\n"),
1693 (unsigned long) (tags - section_begin
1696 get_TAG_name (entry->tag));
1701 need_base_address = 0;
1703 case DW_TAG_compile_unit:
1704 need_base_address = 1;
1706 case DW_TAG_entry_point:
1707 case DW_TAG_inlined_subroutine:
1708 case DW_TAG_subprogram:
1709 need_base_address = 0;
1710 /* Assuming that there is no DW_AT_frame_base. */
1711 have_frame_base = 0;
1715 for (attr = entry->first_attr; attr; attr = attr->next)
1716 tags = read_and_display_attr (attr->attribute,
1719 compunit.cu_pointer_size,
1721 compunit.cu_version,
1722 &debug_information [unit],
1725 if (entry->children)
1730 /* Set num_debug_info_entries here so that it can be used to check if
1731 we need to process .debug_loc and .debug_ranges sections. */
1732 if ((do_loc || do_debug_loc || do_debug_ranges)
1733 && num_debug_info_entries == 0)
1734 num_debug_info_entries = num_units;
1744 /* Locate and scan the .debug_info section in the file and record the pointer
1745 sizes and offsets for the compilation units in it. Usually an executable
1746 will have just one pointer size, but this is not guaranteed, and so we try
1747 not to make any assumptions. Returns zero upon failure, or the number of
1748 compilation units upon success. */
1751 load_debug_info (void * file)
1753 /* Reset the last pointer size so that we can issue correct error
1754 messages if we are displaying the contents of more than one section. */
1755 last_pointer_size = 0;
1756 warned_about_missing_comp_units = FALSE;
1758 /* If we already have the information there is nothing else to do. */
1759 if (num_debug_info_entries > 0)
1760 return num_debug_info_entries;
1762 if (load_debug_section (info, file)
1763 && process_debug_info (&debug_displays [info].section, file, 1))
1764 return num_debug_info_entries;
1769 /* Retrieve the pointer size associated with the given compilation unit.
1770 Optionally the offset of this unit into the .debug_info section is
1771 also retutned. If there is no .debug_info section then an error
1772 message is issued and 0 is returned. If the requested comp unit has
1773 not been defined in the .debug_info section then a warning message
1774 is issued and the last know pointer size is returned. This message
1775 is only issued once per section dumped per file dumped. */
1778 get_pointer_size_and_offset_of_comp_unit (unsigned int comp_unit,
1779 const char * section_name,
1780 unsigned long * offset_return)
1782 unsigned long offset = 0;
1784 if (num_debug_info_entries == 0)
1785 error (_("%s section needs a populated .debug_info section\n"),
1788 else if (comp_unit >= num_debug_info_entries)
1790 if (!warned_about_missing_comp_units)
1792 warn (_("%s section has more comp units than .debug_info section\n"),
1794 warn (_("assuming that the pointer size is %d, from the last comp unit in .debug_info\n\n"),
1796 warned_about_missing_comp_units = TRUE;
1801 last_pointer_size = debug_information [comp_unit].pointer_size;
1802 offset = debug_information [comp_unit].cu_offset;
1805 if (offset_return != NULL)
1806 * offset_return = offset;
1808 return last_pointer_size;
1812 display_debug_lines (struct dwarf_section *section, void *file)
1814 unsigned char *start = section->start;
1815 unsigned char *data = start;
1816 unsigned char *end = start + section->size;
1817 unsigned int comp_unit = 0;
1819 printf (_("\nDump of debug contents of section %s:\n\n"),
1822 load_debug_info (file);
1826 DWARF2_Internal_LineInfo info;
1827 unsigned char *standard_opcodes;
1828 unsigned char *end_of_sequence;
1829 unsigned char *hdrptr;
1830 unsigned int pointer_size;
1831 int initial_length_size;
1837 /* Check the length of the block. */
1838 info.li_length = byte_get (hdrptr, 4);
1841 if (info.li_length == 0xffffffff)
1843 /* This section is 64-bit DWARF 3. */
1844 info.li_length = byte_get (hdrptr, 8);
1847 initial_length_size = 12;
1852 initial_length_size = 4;
1855 if (info.li_length + initial_length_size > section->size)
1858 (_("The line info appears to be corrupt - the section is too small\n"));
1862 /* Check its version number. */
1863 info.li_version = byte_get (hdrptr, 2);
1865 if (info.li_version != 2 && info.li_version != 3)
1867 warn (_("Only DWARF version 2 and 3 line info is currently supported.\n"));
1871 info.li_prologue_length = byte_get (hdrptr, offset_size);
1872 hdrptr += offset_size;
1873 info.li_min_insn_length = byte_get (hdrptr, 1);
1875 info.li_default_is_stmt = byte_get (hdrptr, 1);
1877 info.li_line_base = byte_get (hdrptr, 1);
1879 info.li_line_range = byte_get (hdrptr, 1);
1881 info.li_opcode_base = byte_get (hdrptr, 1);
1884 /* Sign extend the line base field. */
1885 info.li_line_base <<= 24;
1886 info.li_line_base >>= 24;
1888 /* Get the pointer size from the comp unit associated
1889 with this block of line number information. */
1890 pointer_size = get_pointer_size_and_offset_of_comp_unit
1891 (comp_unit, ".debug_line", NULL);
1894 printf (_(" Length: %ld\n"), info.li_length);
1895 printf (_(" DWARF Version: %d\n"), info.li_version);
1896 printf (_(" Prologue Length: %d\n"), info.li_prologue_length);
1897 printf (_(" Minimum Instruction Length: %d\n"), info.li_min_insn_length);
1898 printf (_(" Initial value of 'is_stmt': %d\n"), info.li_default_is_stmt);
1899 printf (_(" Line Base: %d\n"), info.li_line_base);
1900 printf (_(" Line Range: %d\n"), info.li_line_range);
1901 printf (_(" Opcode Base: %d\n"), info.li_opcode_base);
1902 printf (_(" (Pointer size: %u)%s\n"),
1904 warned_about_missing_comp_units ? " [assumed]" : "" );
1906 end_of_sequence = data + info.li_length + initial_length_size;
1908 reset_state_machine (info.li_default_is_stmt);
1910 /* Display the contents of the Opcodes table. */
1911 standard_opcodes = hdrptr;
1913 printf (_("\n Opcodes:\n"));
1915 for (i = 1; i < info.li_opcode_base; i++)
1916 printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]);
1918 /* Display the contents of the Directory table. */
1919 data = standard_opcodes + info.li_opcode_base - 1;
1922 printf (_("\n The Directory Table is empty.\n"));
1925 printf (_("\n The Directory Table:\n"));
1929 printf (_(" %s\n"), data);
1931 data += strlen ((char *) data) + 1;
1935 /* Skip the NUL at the end of the table. */
1938 /* Display the contents of the File Name table. */
1940 printf (_("\n The File Name Table is empty.\n"));
1943 printf (_("\n The File Name Table:\n"));
1944 printf (_(" Entry\tDir\tTime\tSize\tName\n"));
1948 unsigned char *name;
1949 unsigned int bytes_read;
1951 printf (_(" %d\t"), ++state_machine_regs.last_file_entry);
1954 data += strlen ((char *) data) + 1;
1956 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
1958 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
1960 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
1962 printf (_("%s\n"), name);
1966 /* Skip the NUL at the end of the table. */
1969 /* Now display the statements. */
1970 printf (_("\n Line Number Statements:\n"));
1972 while (data < end_of_sequence)
1974 unsigned char op_code;
1976 unsigned long int uladv;
1977 unsigned int bytes_read;
1981 if (op_code >= info.li_opcode_base)
1983 op_code -= info.li_opcode_base;
1984 uladv = (op_code / info.li_line_range) * info.li_min_insn_length;
1985 state_machine_regs.address += uladv;
1986 printf (_(" Special opcode %d: advance Address by %lu to 0x%lx"),
1987 op_code, uladv, state_machine_regs.address);
1988 adv = (op_code % info.li_line_range) + info.li_line_base;
1989 state_machine_regs.line += adv;
1990 printf (_(" and Line by %d to %d\n"),
1991 adv, state_machine_regs.line);
1993 else switch (op_code)
1995 case DW_LNS_extended_op:
1996 if (pointer_size == 0)
1998 warn (_("Extend line ops need a valid pointer size, guessing at 4\n"));
2002 data += process_extended_line_op (data, info.li_default_is_stmt,
2007 printf (_(" Copy\n"));
2010 case DW_LNS_advance_pc:
2011 uladv = read_leb128 (data, & bytes_read, 0);
2012 uladv *= info.li_min_insn_length;
2014 state_machine_regs.address += uladv;
2015 printf (_(" Advance PC by %lu to 0x%lx\n"), uladv,
2016 state_machine_regs.address);
2019 case DW_LNS_advance_line:
2020 adv = read_leb128 (data, & bytes_read, 1);
2022 state_machine_regs.line += adv;
2023 printf (_(" Advance Line by %d to %d\n"), adv,
2024 state_machine_regs.line);
2027 case DW_LNS_set_file:
2028 adv = read_leb128 (data, & bytes_read, 0);
2030 printf (_(" Set File Name to entry %d in the File Name Table\n"),
2032 state_machine_regs.file = adv;
2035 case DW_LNS_set_column:
2036 uladv = read_leb128 (data, & bytes_read, 0);
2038 printf (_(" Set column to %lu\n"), uladv);
2039 state_machine_regs.column = uladv;
2042 case DW_LNS_negate_stmt:
2043 adv = state_machine_regs.is_stmt;
2045 printf (_(" Set is_stmt to %d\n"), adv);
2046 state_machine_regs.is_stmt = adv;
2049 case DW_LNS_set_basic_block:
2050 printf (_(" Set basic block\n"));
2051 state_machine_regs.basic_block = 1;
2054 case DW_LNS_const_add_pc:
2055 uladv = (((255 - info.li_opcode_base) / info.li_line_range)
2056 * info.li_min_insn_length);
2057 state_machine_regs.address += uladv;
2058 printf (_(" Advance PC by constant %lu to 0x%lx\n"), uladv,
2059 state_machine_regs.address);
2062 case DW_LNS_fixed_advance_pc:
2063 uladv = byte_get (data, 2);
2065 state_machine_regs.address += uladv;
2066 printf (_(" Advance PC by fixed size amount %lu to 0x%lx\n"),
2067 uladv, state_machine_regs.address);
2070 case DW_LNS_set_prologue_end:
2071 printf (_(" Set prologue_end to true\n"));
2074 case DW_LNS_set_epilogue_begin:
2075 printf (_(" Set epilogue_begin to true\n"));
2078 case DW_LNS_set_isa:
2079 uladv = read_leb128 (data, & bytes_read, 0);
2081 printf (_(" Set ISA to %lu\n"), uladv);
2085 printf (_(" Unknown opcode %d with operands: "), op_code);
2087 for (i = standard_opcodes[op_code - 1]; i > 0 ; --i)
2089 printf ("0x%lx%s", read_leb128 (data, &bytes_read, 0),
2090 i == 1 ? "" : ", ");
2104 display_debug_pubnames (struct dwarf_section *section,
2105 void *file ATTRIBUTE_UNUSED)
2107 DWARF2_Internal_PubNames pubnames;
2108 unsigned char *start = section->start;
2109 unsigned char *end = start + section->size;
2111 printf (_("Contents of the %s section:\n\n"), section->name);
2115 unsigned char *data;
2116 unsigned long offset;
2117 int offset_size, initial_length_size;
2121 pubnames.pn_length = byte_get (data, 4);
2123 if (pubnames.pn_length == 0xffffffff)
2125 pubnames.pn_length = byte_get (data, 8);
2128 initial_length_size = 12;
2133 initial_length_size = 4;
2136 pubnames.pn_version = byte_get (data, 2);
2138 pubnames.pn_offset = byte_get (data, offset_size);
2139 data += offset_size;
2140 pubnames.pn_size = byte_get (data, offset_size);
2141 data += offset_size;
2143 start += pubnames.pn_length + initial_length_size;
2145 if (pubnames.pn_version != 2 && pubnames.pn_version != 3)
2147 static int warned = 0;
2151 warn (_("Only DWARF 2 and 3 pubnames are currently supported\n"));
2158 printf (_(" Length: %ld\n"),
2159 pubnames.pn_length);
2160 printf (_(" Version: %d\n"),
2161 pubnames.pn_version);
2162 printf (_(" Offset into .debug_info section: %ld\n"),
2163 pubnames.pn_offset);
2164 printf (_(" Size of area in .debug_info section: %ld\n"),
2167 printf (_("\n Offset\tName\n"));
2171 offset = byte_get (data, offset_size);
2175 data += offset_size;
2176 printf (" %-6ld\t\t%s\n", offset, data);
2177 data += strlen ((char *) data) + 1;
2180 while (offset != 0);
2188 display_debug_macinfo (struct dwarf_section *section,
2189 void *file ATTRIBUTE_UNUSED)
2191 unsigned char *start = section->start;
2192 unsigned char *end = start + section->size;
2193 unsigned char *curr = start;
2194 unsigned int bytes_read;
2195 enum dwarf_macinfo_record_type op;
2197 printf (_("Contents of the %s section:\n\n"), section->name);
2201 unsigned int lineno;
2209 case DW_MACINFO_start_file:
2211 unsigned int filenum;
2213 lineno = read_leb128 (curr, & bytes_read, 0);
2215 filenum = read_leb128 (curr, & bytes_read, 0);
2218 printf (_(" DW_MACINFO_start_file - lineno: %d filenum: %d\n"),
2223 case DW_MACINFO_end_file:
2224 printf (_(" DW_MACINFO_end_file\n"));
2227 case DW_MACINFO_define:
2228 lineno = read_leb128 (curr, & bytes_read, 0);
2230 string = (char *) curr;
2231 curr += strlen (string) + 1;
2232 printf (_(" DW_MACINFO_define - lineno : %d macro : %s\n"),
2236 case DW_MACINFO_undef:
2237 lineno = read_leb128 (curr, & bytes_read, 0);
2239 string = (char *) curr;
2240 curr += strlen (string) + 1;
2241 printf (_(" DW_MACINFO_undef - lineno : %d macro : %s\n"),
2245 case DW_MACINFO_vendor_ext:
2247 unsigned int constant;
2249 constant = read_leb128 (curr, & bytes_read, 0);
2251 string = (char *) curr;
2252 curr += strlen (string) + 1;
2253 printf (_(" DW_MACINFO_vendor_ext - constant : %d string : %s\n"),
2264 display_debug_abbrev (struct dwarf_section *section,
2265 void *file ATTRIBUTE_UNUSED)
2267 abbrev_entry *entry;
2268 unsigned char *start = section->start;
2269 unsigned char *end = start + section->size;
2271 printf (_("Contents of the %s section:\n\n"), section->name);
2277 start = process_abbrev_section (start, end);
2279 if (first_abbrev == NULL)
2282 printf (_(" Number TAG\n"));
2284 for (entry = first_abbrev; entry; entry = entry->next)
2288 printf (_(" %ld %s [%s]\n"),
2290 get_TAG_name (entry->tag),
2291 entry->children ? _("has children") : _("no children"));
2293 for (attr = entry->first_attr; attr; attr = attr->next)
2294 printf (_(" %-18s %s\n"),
2295 get_AT_name (attr->attribute),
2296 get_FORM_name (attr->form));
2307 display_debug_loc (struct dwarf_section *section, void *file)
2309 unsigned char *start = section->start;
2310 unsigned char *section_end;
2311 unsigned long bytes;
2312 unsigned char *section_begin = start;
2313 unsigned int num_loc_list = 0;
2314 unsigned long last_offset = 0;
2315 unsigned int first = 0;
2318 int seen_first_offset = 0;
2319 int use_debug_info = 1;
2320 unsigned char *next;
2322 bytes = section->size;
2323 section_end = start + bytes;
2327 printf (_("\nThe %s section is empty.\n"), section->name);
2331 load_debug_info (file);
2333 /* Check the order of location list in .debug_info section. If
2334 offsets of location lists are in the ascending order, we can
2335 use `debug_information' directly. */
2336 for (i = 0; i < num_debug_info_entries; i++)
2340 num = debug_information [i].num_loc_offsets;
2341 num_loc_list += num;
2343 /* Check if we can use `debug_information' directly. */
2344 if (use_debug_info && num != 0)
2346 if (!seen_first_offset)
2348 /* This is the first location list. */
2349 last_offset = debug_information [i].loc_offsets [0];
2351 seen_first_offset = 1;
2357 for (; j < num; j++)
2360 debug_information [i].loc_offsets [j])
2365 last_offset = debug_information [i].loc_offsets [j];
2370 if (!use_debug_info)
2371 /* FIXME: Should we handle this case? */
2372 error (_("Location lists in .debug_info section aren't in ascending order!\n"));
2374 if (!seen_first_offset)
2375 error (_("No location lists in .debug_info section!\n"));
2377 /* DWARF sections under Mach-O have non-zero addresses. */
2378 if (debug_information [first].loc_offsets [0] != section->address)
2379 warn (_("Location lists in %s section start at 0x%lx\n"),
2380 section->name, debug_information [first].loc_offsets [0]);
2382 printf (_("Contents of the %s section:\n\n"), section->name);
2383 printf (_(" Offset Begin End Expression\n"));
2385 seen_first_offset = 0;
2386 for (i = first; i < num_debug_info_entries; i++)
2388 unsigned long begin;
2390 unsigned short length;
2391 unsigned long offset;
2392 unsigned int pointer_size;
2393 unsigned long cu_offset;
2394 unsigned long base_address;
2395 int need_frame_base;
2398 pointer_size = debug_information [i].pointer_size;
2399 cu_offset = debug_information [i].cu_offset;
2401 for (j = 0; j < debug_information [i].num_loc_offsets; j++)
2403 has_frame_base = debug_information [i].have_frame_base [j];
2404 /* DWARF sections under Mach-O have non-zero addresses. */
2405 offset = debug_information [i].loc_offsets [j] - section->address;
2406 next = section_begin + offset;
2407 base_address = debug_information [i].base_address;
2409 if (!seen_first_offset)
2410 seen_first_offset = 1;
2414 warn (_("There is a hole [0x%lx - 0x%lx] in .debug_loc section.\n"),
2415 (long)(start - section_begin), (long)(next - section_begin));
2416 else if (start > next)
2417 warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"),
2418 (long)(start - section_begin), (long)(next - section_begin));
2422 if (offset >= bytes)
2424 warn (_("Offset 0x%lx is bigger than .debug_loc section size.\n"),
2431 if (start + 2 * pointer_size > section_end)
2433 warn (_("Location list starting at offset 0x%lx is not terminated.\n"),
2438 begin = byte_get (start, pointer_size);
2439 start += pointer_size;
2440 end = byte_get (start, pointer_size);
2441 start += pointer_size;
2443 if (begin == 0 && end == 0)
2445 printf (_(" %8.8lx <End of list>\n"), offset);
2449 /* Check base address specifiers. */
2450 if (begin == -1UL && end != -1UL)
2453 printf (_(" %8.8lx %8.8lx %8.8lx (base address)\n"),
2454 offset, begin, end);
2458 if (start + 2 > section_end)
2460 warn (_("Location list starting at offset 0x%lx is not terminated.\n"),
2465 length = byte_get (start, 2);
2468 if (start + length > section_end)
2470 warn (_("Location list starting at offset 0x%lx is not terminated.\n"),
2475 printf (" %8.8lx %8.8lx %8.8lx (",
2476 offset, begin + base_address, end + base_address);
2477 need_frame_base = decode_location_expression (start,
2483 if (need_frame_base && !has_frame_base)
2484 printf (_(" [without DW_AT_frame_base]"));
2487 fputs (_(" (start == end)"), stdout);
2488 else if (begin > end)
2489 fputs (_(" (start > end)"), stdout);
2501 display_debug_str (struct dwarf_section *section,
2502 void *file ATTRIBUTE_UNUSED)
2504 unsigned char *start = section->start;
2505 unsigned long bytes = section->size;
2506 dwarf_vma addr = section->address;
2510 printf (_("\nThe %s section is empty.\n"), section->name);
2514 printf (_("Contents of the %s section:\n\n"), section->name);
2522 lbytes = (bytes > 16 ? 16 : bytes);
2524 printf (" 0x%8.8lx ", (unsigned long) addr);
2526 for (j = 0; j < 16; j++)
2529 printf ("%2.2x", start[j]);
2537 for (j = 0; j < lbytes; j++)
2540 if (k >= ' ' && k < 0x80)
2560 display_debug_info (struct dwarf_section *section, void *file)
2562 return process_debug_info (section, file, 0);
2567 display_debug_aranges (struct dwarf_section *section,
2568 void *file ATTRIBUTE_UNUSED)
2570 unsigned char *start = section->start;
2571 unsigned char *end = start + section->size;
2573 printf (_("The section %s contains:\n\n"), section->name);
2577 unsigned char *hdrptr;
2578 DWARF2_Internal_ARange arange;
2579 unsigned char *ranges;
2580 unsigned long length;
2581 unsigned long address;
2584 int initial_length_size;
2588 arange.ar_length = byte_get (hdrptr, 4);
2591 if (arange.ar_length == 0xffffffff)
2593 arange.ar_length = byte_get (hdrptr, 8);
2596 initial_length_size = 12;
2601 initial_length_size = 4;
2604 arange.ar_version = byte_get (hdrptr, 2);
2607 arange.ar_info_offset = byte_get (hdrptr, offset_size);
2608 hdrptr += offset_size;
2610 arange.ar_pointer_size = byte_get (hdrptr, 1);
2613 arange.ar_segment_size = byte_get (hdrptr, 1);
2616 if (arange.ar_version != 2 && arange.ar_version != 3)
2618 warn (_("Only DWARF 2 and 3 aranges are currently supported.\n"));
2622 printf (_(" Length: %ld\n"), arange.ar_length);
2623 printf (_(" Version: %d\n"), arange.ar_version);
2624 printf (_(" Offset into .debug_info: %lx\n"), arange.ar_info_offset);
2625 printf (_(" Pointer Size: %d\n"), arange.ar_pointer_size);
2626 printf (_(" Segment Size: %d\n"), arange.ar_segment_size);
2628 printf (_("\n Address Length\n"));
2632 /* Must pad to an alignment boundary that is twice the pointer size. */
2633 excess = (hdrptr - start) % (2 * arange.ar_pointer_size);
2635 ranges += (2 * arange.ar_pointer_size) - excess;
2639 address = byte_get (ranges, arange.ar_pointer_size);
2641 ranges += arange.ar_pointer_size;
2643 length = byte_get (ranges, arange.ar_pointer_size);
2645 ranges += arange.ar_pointer_size;
2647 /* A pair of zeros marks the end of the list. */
2648 if (address == 0 && length == 0)
2651 printf (" %8.8lx %lu\n", address, length);
2654 start += arange.ar_length + initial_length_size;
2663 display_debug_ranges (struct dwarf_section *section,
2664 void *file ATTRIBUTE_UNUSED)
2666 unsigned char *start = section->start;
2667 unsigned char *section_end;
2668 unsigned long bytes;
2669 unsigned char *section_begin = start;
2670 unsigned int num_range_list = 0;
2671 unsigned long last_offset = 0;
2672 unsigned int first = 0;
2675 int seen_first_offset = 0;
2676 int use_debug_info = 1;
2677 unsigned char *next;
2679 bytes = section->size;
2680 section_end = start + bytes;
2684 printf (_("\nThe %s section is empty.\n"), section->name);
2688 load_debug_info (file);
2690 /* Check the order of range list in .debug_info section. If
2691 offsets of range lists are in the ascending order, we can
2692 use `debug_information' directly. */
2693 for (i = 0; i < num_debug_info_entries; i++)
2697 num = debug_information [i].num_range_lists;
2698 num_range_list += num;
2700 /* Check if we can use `debug_information' directly. */
2701 if (use_debug_info && num != 0)
2703 if (!seen_first_offset)
2705 /* This is the first range list. */
2706 last_offset = debug_information [i].range_lists [0];
2708 seen_first_offset = 1;
2714 for (; j < num; j++)
2717 debug_information [i].range_lists [j])
2722 last_offset = debug_information [i].range_lists [j];
2727 if (!use_debug_info)
2728 /* FIXME: Should we handle this case? */
2729 error (_("Range lists in .debug_info section aren't in ascending order!\n"));
2731 if (!seen_first_offset)
2732 error (_("No range lists in .debug_info section!\n"));
2734 /* DWARF sections under Mach-O have non-zero addresses. */
2735 if (debug_information [first].range_lists [0] != section->address)
2736 warn (_("Range lists in %s section start at 0x%lx\n"),
2737 section->name, debug_information [first].range_lists [0]);
2739 printf (_("Contents of the %s section:\n\n"), section->name);
2740 printf (_(" Offset Begin End\n"));
2742 seen_first_offset = 0;
2743 for (i = first; i < num_debug_info_entries; i++)
2745 unsigned long begin;
2747 unsigned long offset;
2748 unsigned int pointer_size;
2749 unsigned long base_address;
2751 pointer_size = debug_information [i].pointer_size;
2753 for (j = 0; j < debug_information [i].num_range_lists; j++)
2755 /* DWARF sections under Mach-O have non-zero addresses. */
2756 offset = debug_information [i].range_lists [j] - section->address;
2757 next = section_begin + offset;
2758 base_address = debug_information [i].base_address;
2760 if (!seen_first_offset)
2761 seen_first_offset = 1;
2765 warn (_("There is a hole [0x%lx - 0x%lx] in %s section.\n"),
2766 (long)(start - section_begin),
2767 (long)(next - section_begin), section->name);
2768 else if (start > next)
2769 warn (_("There is an overlap [0x%lx - 0x%lx] in %s section.\n"),
2770 (long)(start - section_begin),
2771 (long)(next - section_begin), section->name);
2777 begin = byte_get (start, pointer_size);
2778 start += pointer_size;
2779 end = byte_get (start, pointer_size);
2780 start += pointer_size;
2782 if (begin == 0 && end == 0)
2784 printf (_(" %8.8lx <End of list>\n"), offset);
2788 /* Check base address specifiers. */
2789 if (begin == -1UL && end != -1UL)
2792 printf (" %8.8lx %8.8lx %8.8lx (base address)\n",
2793 offset, begin, end);
2797 printf (" %8.8lx %8.8lx %8.8lx",
2798 offset, begin + base_address, end + base_address);
2801 fputs (_(" (start == end)"), stdout);
2802 else if (begin > end)
2803 fputs (_(" (start > end)"), stdout);
2813 typedef struct Frame_Chunk
2815 struct Frame_Chunk *next;
2816 unsigned char *chunk_start;
2818 /* DW_CFA_{undefined,same_value,offset,register,unreferenced} */
2819 short int *col_type;
2822 unsigned int code_factor;
2824 unsigned long pc_begin;
2825 unsigned long pc_range;
2829 unsigned char fde_encoding;
2830 unsigned char cfa_exp;
2834 /* A marker for a col_type that means this column was never referenced
2835 in the frame info. */
2836 #define DW_CFA_unreferenced (-1)
2839 frame_need_space (Frame_Chunk *fc, int reg)
2841 int prev = fc->ncols;
2843 if (reg < fc->ncols)
2846 fc->ncols = reg + 1;
2847 fc->col_type = xcrealloc (fc->col_type, fc->ncols, sizeof (short int));
2848 fc->col_offset = xcrealloc (fc->col_offset, fc->ncols, sizeof (int));
2850 while (prev < fc->ncols)
2852 fc->col_type[prev] = DW_CFA_unreferenced;
2853 fc->col_offset[prev] = 0;
2859 frame_display_row (Frame_Chunk *fc, int *need_col_headers, int *max_regs)
2864 if (*max_regs < fc->ncols)
2865 *max_regs = fc->ncols;
2867 if (*need_col_headers)
2869 *need_col_headers = 0;
2871 printf (" LOC CFA ");
2873 for (r = 0; r < *max_regs; r++)
2874 if (fc->col_type[r] != DW_CFA_unreferenced)
2879 printf ("r%-4d", r);
2885 printf ("%08lx ", fc->pc_begin);
2887 strcpy (tmp, "exp");
2889 sprintf (tmp, "r%d%+d", fc->cfa_reg, fc->cfa_offset);
2890 printf ("%-8s ", tmp);
2892 for (r = 0; r < fc->ncols; r++)
2894 if (fc->col_type[r] != DW_CFA_unreferenced)
2896 switch (fc->col_type[r])
2898 case DW_CFA_undefined:
2901 case DW_CFA_same_value:
2905 sprintf (tmp, "c%+d", fc->col_offset[r]);
2907 case DW_CFA_register:
2908 sprintf (tmp, "r%d", fc->col_offset[r]);
2910 case DW_CFA_expression:
2911 strcpy (tmp, "exp");
2914 strcpy (tmp, "n/a");
2917 printf ("%-5s", tmp);
2924 size_of_encoded_value (int encoding)
2926 switch (encoding & 0x7)
2929 case 0: return eh_addr_size;
2937 get_encoded_value (unsigned char *data, int encoding)
2939 int size = size_of_encoded_value (encoding);
2940 if (encoding & DW_EH_PE_signed)
2941 return byte_get_signed (data, size);
2943 return byte_get (data, size);
2946 #define GET(N) byte_get (start, N); start += N
2947 #define LEB() read_leb128 (start, & length_return, 0); start += length_return
2948 #define SLEB() read_leb128 (start, & length_return, 1); start += length_return
2951 display_debug_frames (struct dwarf_section *section,
2952 void *file ATTRIBUTE_UNUSED)
2954 unsigned char *start = section->start;
2955 unsigned char *end = start + section->size;
2956 unsigned char *section_start = start;
2957 Frame_Chunk *chunks = 0;
2958 Frame_Chunk *remembered_state = 0;
2960 int is_eh = strcmp (section->name, ".eh_frame") == 0;
2961 unsigned int length_return;
2964 printf (_("The section %s contains:\n"), section->name);
2968 unsigned char *saved_start;
2969 unsigned char *block_end;
2970 unsigned long length;
2971 unsigned long cie_id;
2974 int need_col_headers = 1;
2975 unsigned char *augmentation_data = NULL;
2976 unsigned long augmentation_data_len = 0;
2977 int encoded_ptr_size = eh_addr_size;
2979 int initial_length_size;
2981 saved_start = start;
2982 length = byte_get (start, 4); start += 4;
2986 printf ("\n%08lx ZERO terminator\n\n",
2987 (unsigned long)(saved_start - section_start));
2991 if (length == 0xffffffff)
2993 length = byte_get (start, 8);
2996 initial_length_size = 12;
3001 initial_length_size = 4;
3004 block_end = saved_start + length + initial_length_size;
3005 cie_id = byte_get (start, offset_size); start += offset_size;
3007 if (is_eh ? (cie_id == 0) : (cie_id == DW_CIE_ID))
3011 fc = xmalloc (sizeof (Frame_Chunk));
3012 memset (fc, 0, sizeof (Frame_Chunk));
3016 fc->chunk_start = saved_start;
3018 fc->col_type = xmalloc (sizeof (short int));
3019 fc->col_offset = xmalloc (sizeof (int));
3020 frame_need_space (fc, max_regs-1);
3024 fc->augmentation = (char *) start;
3025 start = (unsigned char *) strchr ((char *) start, '\0') + 1;
3027 if (fc->augmentation[0] == 'z')
3029 fc->code_factor = LEB ();
3030 fc->data_factor = SLEB ();
3039 augmentation_data_len = LEB ();
3040 augmentation_data = start;
3041 start += augmentation_data_len;
3043 else if (strcmp (fc->augmentation, "eh") == 0)
3045 start += eh_addr_size;
3046 fc->code_factor = LEB ();
3047 fc->data_factor = SLEB ();
3059 fc->code_factor = LEB ();
3060 fc->data_factor = SLEB ();
3072 if (do_debug_frames_interp)
3073 printf ("\n%08lx %08lx %08lx CIE \"%s\" cf=%d df=%d ra=%d\n",
3074 (unsigned long)(saved_start - section_start), length, cie_id,
3075 fc->augmentation, fc->code_factor, fc->data_factor,
3079 printf ("\n%08lx %08lx %08lx CIE\n",
3080 (unsigned long)(saved_start - section_start), length, cie_id);
3081 printf (" Version: %d\n", version);
3082 printf (" Augmentation: \"%s\"\n", fc->augmentation);
3083 printf (" Code alignment factor: %u\n", fc->code_factor);
3084 printf (" Data alignment factor: %d\n", fc->data_factor);
3085 printf (" Return address column: %d\n", fc->ra);
3087 if (augmentation_data_len)
3090 printf (" Augmentation data: ");
3091 for (i = 0; i < augmentation_data_len; ++i)
3092 printf (" %02x", augmentation_data[i]);
3098 if (augmentation_data_len)
3100 unsigned char *p, *q;
3101 p = (unsigned char *) fc->augmentation + 1;
3102 q = augmentation_data;
3109 q += 1 + size_of_encoded_value (*q);
3111 fc->fde_encoding = *q++;
3117 if (fc->fde_encoding)
3118 encoded_ptr_size = size_of_encoded_value (fc->fde_encoding);
3121 frame_need_space (fc, fc->ra);
3125 unsigned char *look_for;
3126 static Frame_Chunk fde_fc;
3129 memset (fc, 0, sizeof (Frame_Chunk));
3131 look_for = is_eh ? start - 4 - cie_id : section_start + cie_id;
3133 for (cie = chunks; cie ; cie = cie->next)
3134 if (cie->chunk_start == look_for)
3139 warn ("Invalid CIE pointer %08lx in FDE at %p\n",
3140 cie_id, saved_start);
3143 fc->col_type = xmalloc (sizeof (short int));
3144 fc->col_offset = xmalloc (sizeof (int));
3145 frame_need_space (fc, max_regs - 1);
3147 fc->augmentation = "";
3148 fc->fde_encoding = 0;
3152 fc->ncols = cie->ncols;
3153 fc->col_type = xcmalloc (fc->ncols, sizeof (short int));
3154 fc->col_offset = xcmalloc (fc->ncols, sizeof (int));
3155 memcpy (fc->col_type, cie->col_type, fc->ncols * sizeof (short int));
3156 memcpy (fc->col_offset, cie->col_offset, fc->ncols * sizeof (int));
3157 fc->augmentation = cie->augmentation;
3158 fc->code_factor = cie->code_factor;
3159 fc->data_factor = cie->data_factor;
3160 fc->cfa_reg = cie->cfa_reg;
3161 fc->cfa_offset = cie->cfa_offset;
3163 frame_need_space (fc, max_regs-1);
3164 fc->fde_encoding = cie->fde_encoding;
3167 if (fc->fde_encoding)
3168 encoded_ptr_size = size_of_encoded_value (fc->fde_encoding);
3170 fc->pc_begin = get_encoded_value (start, fc->fde_encoding);
3171 if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel
3172 /* Don't adjust for relocatable file since there's
3173 invariably a pcrel reloc here, which we haven't
3176 fc->pc_begin += section->address + (start - section_start);
3177 start += encoded_ptr_size;
3178 fc->pc_range = byte_get (start, encoded_ptr_size);
3179 start += encoded_ptr_size;
3181 if (cie->augmentation[0] == 'z')
3183 augmentation_data_len = LEB ();
3184 augmentation_data = start;
3185 start += augmentation_data_len;
3188 printf ("\n%08lx %08lx %08lx FDE cie=%08lx pc=%08lx..%08lx\n",
3189 (unsigned long)(saved_start - section_start), length, cie_id,
3190 (unsigned long)(cie->chunk_start - section_start),
3191 fc->pc_begin, fc->pc_begin + fc->pc_range);
3192 if (! do_debug_frames_interp && augmentation_data_len)
3196 printf (" Augmentation data: ");
3197 for (i = 0; i < augmentation_data_len; ++i)
3198 printf (" %02x", augmentation_data[i]);
3204 /* At this point, fc is the current chunk, cie (if any) is set, and
3205 we're about to interpret instructions for the chunk. */
3206 /* ??? At present we need to do this always, since this sizes the
3207 fc->col_type and fc->col_offset arrays, which we write into always.
3208 We should probably split the interpreted and non-interpreted bits
3209 into two different routines, since there's so much that doesn't
3210 really overlap between them. */
3211 if (1 || do_debug_frames_interp)
3213 /* Start by making a pass over the chunk, allocating storage
3214 and taking note of what registers are used. */
3215 unsigned char *tmp = start;
3217 while (start < block_end)
3220 unsigned long reg, tmp;
3227 /* Warning: if you add any more cases to this switch, be
3228 sure to add them to the corresponding switch below. */
3231 case DW_CFA_advance_loc:
3235 frame_need_space (fc, opa);
3236 fc->col_type[opa] = DW_CFA_undefined;
3238 case DW_CFA_restore:
3239 frame_need_space (fc, opa);
3240 fc->col_type[opa] = DW_CFA_undefined;
3242 case DW_CFA_set_loc:
3243 start += encoded_ptr_size;
3245 case DW_CFA_advance_loc1:
3248 case DW_CFA_advance_loc2:
3251 case DW_CFA_advance_loc4:
3254 case DW_CFA_offset_extended:
3255 reg = LEB (); LEB ();
3256 frame_need_space (fc, reg);
3257 fc->col_type[reg] = DW_CFA_undefined;
3259 case DW_CFA_restore_extended:
3261 frame_need_space (fc, reg);
3262 fc->col_type[reg] = DW_CFA_undefined;
3264 case DW_CFA_undefined:
3266 frame_need_space (fc, reg);
3267 fc->col_type[reg] = DW_CFA_undefined;
3269 case DW_CFA_same_value:
3271 frame_need_space (fc, reg);
3272 fc->col_type[reg] = DW_CFA_undefined;
3274 case DW_CFA_register:
3275 reg = LEB (); LEB ();
3276 frame_need_space (fc, reg);
3277 fc->col_type[reg] = DW_CFA_undefined;
3279 case DW_CFA_def_cfa:
3282 case DW_CFA_def_cfa_register:
3285 case DW_CFA_def_cfa_offset:
3288 case DW_CFA_def_cfa_expression:
3292 case DW_CFA_expression:
3296 frame_need_space (fc, reg);
3297 fc->col_type[reg] = DW_CFA_undefined;
3299 case DW_CFA_offset_extended_sf:
3300 reg = LEB (); SLEB ();
3301 frame_need_space (fc, reg);
3302 fc->col_type[reg] = DW_CFA_undefined;
3304 case DW_CFA_def_cfa_sf:
3307 case DW_CFA_def_cfa_offset_sf:
3310 case DW_CFA_MIPS_advance_loc8:
3313 case DW_CFA_GNU_args_size:
3316 case DW_CFA_GNU_negative_offset_extended:
3317 reg = LEB (); LEB ();
3318 frame_need_space (fc, reg);
3319 fc->col_type[reg] = DW_CFA_undefined;
3328 /* Now we know what registers are used, make a second pass over
3329 the chunk, this time actually printing out the info. */
3331 while (start < block_end)
3334 unsigned long ul, reg, roffs;
3343 /* Warning: if you add any more cases to this switch, be
3344 sure to add them to the corresponding switch above. */
3347 case DW_CFA_advance_loc:
3348 if (do_debug_frames_interp)
3349 frame_display_row (fc, &need_col_headers, &max_regs);
3351 printf (" DW_CFA_advance_loc: %d to %08lx\n",
3352 opa * fc->code_factor,
3353 fc->pc_begin + opa * fc->code_factor);
3354 fc->pc_begin += opa * fc->code_factor;
3359 if (! do_debug_frames_interp)
3360 printf (" DW_CFA_offset: r%d at cfa%+ld\n",
3361 opa, roffs * fc->data_factor);
3362 fc->col_type[opa] = DW_CFA_offset;
3363 fc->col_offset[opa] = roffs * fc->data_factor;
3366 case DW_CFA_restore:
3367 if (! do_debug_frames_interp)
3368 printf (" DW_CFA_restore: r%d\n", opa);
3369 fc->col_type[opa] = cie->col_type[opa];
3370 fc->col_offset[opa] = cie->col_offset[opa];
3373 case DW_CFA_set_loc:
3374 vma = get_encoded_value (start, fc->fde_encoding);
3375 if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel
3377 vma += section->address + (start - section_start);
3378 start += encoded_ptr_size;
3379 if (do_debug_frames_interp)
3380 frame_display_row (fc, &need_col_headers, &max_regs);
3382 printf (" DW_CFA_set_loc: %08lx\n", (unsigned long)vma);
3386 case DW_CFA_advance_loc1:
3387 ofs = byte_get (start, 1); start += 1;
3388 if (do_debug_frames_interp)
3389 frame_display_row (fc, &need_col_headers, &max_regs);
3391 printf (" DW_CFA_advance_loc1: %ld to %08lx\n",
3392 ofs * fc->code_factor,
3393 fc->pc_begin + ofs * fc->code_factor);
3394 fc->pc_begin += ofs * fc->code_factor;
3397 case DW_CFA_advance_loc2:
3398 ofs = byte_get (start, 2); start += 2;
3399 if (do_debug_frames_interp)
3400 frame_display_row (fc, &need_col_headers, &max_regs);
3402 printf (" DW_CFA_advance_loc2: %ld to %08lx\n",
3403 ofs * fc->code_factor,
3404 fc->pc_begin + ofs * fc->code_factor);
3405 fc->pc_begin += ofs * fc->code_factor;
3408 case DW_CFA_advance_loc4:
3409 ofs = byte_get (start, 4); start += 4;
3410 if (do_debug_frames_interp)
3411 frame_display_row (fc, &need_col_headers, &max_regs);
3413 printf (" DW_CFA_advance_loc4: %ld to %08lx\n",
3414 ofs * fc->code_factor,
3415 fc->pc_begin + ofs * fc->code_factor);
3416 fc->pc_begin += ofs * fc->code_factor;
3419 case DW_CFA_offset_extended:
3422 if (! do_debug_frames_interp)
3423 printf (" DW_CFA_offset_extended: r%ld at cfa%+ld\n",
3424 reg, roffs * fc->data_factor);
3425 fc->col_type[reg] = DW_CFA_offset;
3426 fc->col_offset[reg] = roffs * fc->data_factor;
3429 case DW_CFA_restore_extended:
3431 if (! do_debug_frames_interp)
3432 printf (" DW_CFA_restore_extended: r%ld\n", reg);
3433 fc->col_type[reg] = cie->col_type[reg];
3434 fc->col_offset[reg] = cie->col_offset[reg];
3437 case DW_CFA_undefined:
3439 if (! do_debug_frames_interp)
3440 printf (" DW_CFA_undefined: r%ld\n", reg);
3441 fc->col_type[reg] = DW_CFA_undefined;
3442 fc->col_offset[reg] = 0;
3445 case DW_CFA_same_value:
3447 if (! do_debug_frames_interp)
3448 printf (" DW_CFA_same_value: r%ld\n", reg);
3449 fc->col_type[reg] = DW_CFA_same_value;
3450 fc->col_offset[reg] = 0;
3453 case DW_CFA_register:
3456 if (! do_debug_frames_interp)
3457 printf (" DW_CFA_register: r%ld in r%ld\n", reg, roffs);
3458 fc->col_type[reg] = DW_CFA_register;
3459 fc->col_offset[reg] = roffs;
3462 case DW_CFA_remember_state:
3463 if (! do_debug_frames_interp)
3464 printf (" DW_CFA_remember_state\n");
3465 rs = xmalloc (sizeof (Frame_Chunk));
3466 rs->ncols = fc->ncols;
3467 rs->col_type = xcmalloc (rs->ncols, sizeof (short int));
3468 rs->col_offset = xcmalloc (rs->ncols, sizeof (int));
3469 memcpy (rs->col_type, fc->col_type, rs->ncols);
3470 memcpy (rs->col_offset, fc->col_offset, rs->ncols * sizeof (int));
3471 rs->next = remembered_state;
3472 remembered_state = rs;
3475 case DW_CFA_restore_state:
3476 if (! do_debug_frames_interp)
3477 printf (" DW_CFA_restore_state\n");
3478 rs = remembered_state;
3481 remembered_state = rs->next;
3482 frame_need_space (fc, rs->ncols-1);
3483 memcpy (fc->col_type, rs->col_type, rs->ncols);
3484 memcpy (fc->col_offset, rs->col_offset,
3485 rs->ncols * sizeof (int));
3486 free (rs->col_type);
3487 free (rs->col_offset);
3490 else if (do_debug_frames_interp)
3491 printf ("Mismatched DW_CFA_restore_state\n");
3494 case DW_CFA_def_cfa:
3495 fc->cfa_reg = LEB ();
3496 fc->cfa_offset = LEB ();
3498 if (! do_debug_frames_interp)
3499 printf (" DW_CFA_def_cfa: r%d ofs %d\n",
3500 fc->cfa_reg, fc->cfa_offset);
3503 case DW_CFA_def_cfa_register:
3504 fc->cfa_reg = LEB ();
3506 if (! do_debug_frames_interp)
3507 printf (" DW_CFA_def_cfa_reg: r%d\n", fc->cfa_reg);
3510 case DW_CFA_def_cfa_offset:
3511 fc->cfa_offset = LEB ();
3512 if (! do_debug_frames_interp)
3513 printf (" DW_CFA_def_cfa_offset: %d\n", fc->cfa_offset);
3517 if (! do_debug_frames_interp)
3518 printf (" DW_CFA_nop\n");
3521 case DW_CFA_def_cfa_expression:
3523 if (! do_debug_frames_interp)
3525 printf (" DW_CFA_def_cfa_expression (");
3526 decode_location_expression (start, eh_addr_size, ul, 0);
3533 case DW_CFA_expression:
3536 if (! do_debug_frames_interp)
3538 printf (" DW_CFA_expression: r%ld (", reg);
3539 decode_location_expression (start, eh_addr_size, ul, 0);
3542 fc->col_type[reg] = DW_CFA_expression;
3546 case DW_CFA_offset_extended_sf:
3549 frame_need_space (fc, reg);
3550 if (! do_debug_frames_interp)
3551 printf (" DW_CFA_offset_extended_sf: r%ld at cfa%+ld\n",
3552 reg, l * fc->data_factor);
3553 fc->col_type[reg] = DW_CFA_offset;
3554 fc->col_offset[reg] = l * fc->data_factor;
3557 case DW_CFA_def_cfa_sf:
3558 fc->cfa_reg = LEB ();
3559 fc->cfa_offset = SLEB ();
3560 fc->cfa_offset = fc->cfa_offset * fc->data_factor;
3562 if (! do_debug_frames_interp)
3563 printf (" DW_CFA_def_cfa_sf: r%d ofs %d\n",
3564 fc->cfa_reg, fc->cfa_offset);
3567 case DW_CFA_def_cfa_offset_sf:
3568 fc->cfa_offset = SLEB ();
3569 fc->cfa_offset = fc->cfa_offset * fc->data_factor;
3570 if (! do_debug_frames_interp)
3571 printf (" DW_CFA_def_cfa_offset_sf: %d\n", fc->cfa_offset);
3574 case DW_CFA_MIPS_advance_loc8:
3575 ofs = byte_get (start, 8); start += 8;
3576 if (do_debug_frames_interp)
3577 frame_display_row (fc, &need_col_headers, &max_regs);
3579 printf (" DW_CFA_MIPS_advance_loc8: %ld to %08lx\n",
3580 ofs * fc->code_factor,
3581 fc->pc_begin + ofs * fc->code_factor);
3582 fc->pc_begin += ofs * fc->code_factor;
3585 case DW_CFA_GNU_window_save:
3586 if (! do_debug_frames_interp)
3587 printf (" DW_CFA_GNU_window_save\n");
3590 case DW_CFA_GNU_args_size:
3592 if (! do_debug_frames_interp)
3593 printf (" DW_CFA_GNU_args_size: %ld\n", ul);
3596 case DW_CFA_GNU_negative_offset_extended:
3599 frame_need_space (fc, reg);
3600 if (! do_debug_frames_interp)
3601 printf (" DW_CFA_GNU_negative_offset_extended: r%ld at cfa%+ld\n",
3602 reg, l * fc->data_factor);
3603 fc->col_type[reg] = DW_CFA_offset;
3604 fc->col_offset[reg] = l * fc->data_factor;
3608 warn (_("unsupported or unknown DW_CFA_%d\n"), op);
3613 if (do_debug_frames_interp)
3614 frame_display_row (fc, &need_col_headers, &max_regs);
3629 display_debug_not_supported (struct dwarf_section *section,
3630 void *file ATTRIBUTE_UNUSED)
3632 printf (_("Displaying the debug contents of section %s is not yet supported.\n"),
3639 cmalloc (size_t nmemb, size_t size)
3641 /* Check for overflow. */
3642 if (nmemb >= ~(size_t) 0 / size)
3645 return malloc (nmemb * size);
3649 xcmalloc (size_t nmemb, size_t size)
3651 /* Check for overflow. */
3652 if (nmemb >= ~(size_t) 0 / size)
3655 return xmalloc (nmemb * size);
3659 xcrealloc (void *ptr, size_t nmemb, size_t size)
3661 /* Check for overflow. */
3662 if (nmemb >= ~(size_t) 0 / size)
3665 return xrealloc (ptr, nmemb * size);
3669 error (const char *message, ...)
3673 va_start (args, message);
3674 fprintf (stderr, _("%s: Error: "), program_name);
3675 vfprintf (stderr, message, args);
3680 warn (const char *message, ...)
3684 va_start (args, message);
3685 fprintf (stderr, _("%s: Warning: "), program_name);
3686 vfprintf (stderr, message, args);
3691 free_debug_memory (void)
3693 enum dwarf_section_display_enum i;
3697 for (i = 0; i < max; i++)
3698 free_debug_section (i);
3700 if (debug_information)
3702 for (i = 0; i < num_debug_info_entries; i++)
3704 if (!debug_information [i].max_loc_offsets)
3706 free (debug_information [i].loc_offsets);
3707 free (debug_information [i].have_frame_base);
3709 if (!debug_information [i].max_range_lists)
3710 free (debug_information [i].range_lists);
3712 free (debug_information);
3713 debug_information = NULL;
3714 num_debug_info_entries = 0;
3719 struct dwarf_section_display debug_displays[] =
3721 { { ".debug_abbrev", NULL, 0, 0 },
3722 display_debug_abbrev, 0, 0 },
3723 { { ".debug_aranges", NULL, 0, 0 },
3724 display_debug_aranges, 0, 0 },
3725 { { ".debug_frame", NULL, 0, 0 },
3726 display_debug_frames, 1, 0 },
3727 { { ".debug_info", NULL, 0, 0 },
3728 display_debug_info, 1, 0 },
3729 { { ".debug_line", NULL, 0, 0 },
3730 display_debug_lines, 0, 0 },
3731 { { ".debug_pubnames", NULL, 0, 0 },
3732 display_debug_pubnames, 0, 0 },
3733 { { ".eh_frame", NULL, 0, 0 },
3734 display_debug_frames, 1, 1 },
3735 { { ".debug_macinfo", NULL, 0, 0 },
3736 display_debug_macinfo, 0, 0 },
3737 { { ".debug_str", NULL, 0, 0 },
3738 display_debug_str, 0, 0 },
3739 { { ".debug_loc", NULL, 0, 0 },
3740 display_debug_loc, 0, 0 },
3741 { { ".debug_pubtypes", NULL, 0, 0 },
3742 display_debug_pubnames, 0, 0 },
3743 { { ".debug_ranges", NULL, 0, 0 },
3744 display_debug_ranges, 0, 0 },
3745 { { ".debug_static_func", NULL, 0, 0 },
3746 display_debug_not_supported, 0, 0 },
3747 { { ".debug_static_vars", NULL, 0, 0 },
3748 display_debug_not_supported, 0, 0 },
3749 { { ".debug_types", NULL, 0, 0 },
3750 display_debug_not_supported, 0, 0 },
3751 { { ".debug_weaknames", NULL, 0, 0 },
3752 display_debug_not_supported, 0, 0 }