1 /* dwarf.c -- display DWARF contents of a BFD binary file
2 Copyright 2005, 2006, 2007
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 3 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
23 #include "libiberty.h"
26 #include "elf/dwarf2.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)
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, len - bytes_read - 1);
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");
898 case DW_OP_form_tls_address:
899 printf ("DW_OP_form_tls_address");
902 /* GNU extensions. */
903 case DW_OP_GNU_push_tls_address:
904 printf ("DW_OP_GNU_push_tls_address");
908 if (op >= DW_OP_lo_user
909 && op <= DW_OP_hi_user)
910 printf (_("(User defined location op)"));
912 printf (_("(Unknown location op)"));
913 /* No way to tell where the next op is, so just bail. */
914 return need_frame_base;
917 /* Separate the ops. */
922 return need_frame_base;
925 static unsigned char *
926 read_and_display_attr_value (unsigned long attribute,
929 unsigned long cu_offset,
930 unsigned long pointer_size,
931 unsigned long offset_size,
933 debug_info *debug_info_p,
936 unsigned long uvalue = 0;
937 unsigned char *block_start = NULL;
938 unsigned int bytes_read;
945 case DW_FORM_ref_addr:
946 if (dwarf_version == 2)
948 uvalue = byte_get (data, pointer_size);
949 data += pointer_size;
951 else if (dwarf_version == 3)
953 uvalue = byte_get (data, offset_size);
958 error (_("Internal error: DWARF version is not 2 or 3.\n"));
963 uvalue = byte_get (data, pointer_size);
964 data += pointer_size;
968 uvalue = byte_get (data, offset_size);
975 uvalue = byte_get (data++, 1);
980 uvalue = byte_get (data, 2);
986 uvalue = byte_get (data, 4);
991 uvalue = read_leb128 (data, & bytes_read, 1);
995 case DW_FORM_ref_udata:
997 uvalue = read_leb128 (data, & bytes_read, 0);
1001 case DW_FORM_indirect:
1002 form = read_leb128 (data, & bytes_read, 0);
1005 printf (" %s", get_FORM_name (form));
1006 return read_and_display_attr_value (attribute, form, data,
1007 cu_offset, pointer_size,
1008 offset_size, dwarf_version,
1009 debug_info_p, do_loc);
1014 case DW_FORM_ref_addr:
1016 printf (" <#%lx>", uvalue);
1022 case DW_FORM_ref_udata:
1024 printf (" <%lx>", uvalue + cu_offset);
1030 printf (" %#lx", uvalue);
1039 printf (" %ld", uvalue);
1046 uvalue = byte_get (data, 4);
1047 printf (" %lx", uvalue);
1048 printf (" %lx", (unsigned long) byte_get (data + 4, 4));
1050 if ((do_loc || do_debug_loc || do_debug_ranges)
1051 && num_debug_info_entries == 0)
1053 if (sizeof (uvalue) == 8)
1054 uvalue = byte_get (data, 8);
1056 error (_("DW_FORM_data8 is unsupported when sizeof (unsigned long) != 8\n"));
1061 case DW_FORM_string:
1063 printf (" %s", data);
1064 data += strlen ((char *) data) + 1;
1068 uvalue = read_leb128 (data, & bytes_read, 0);
1069 block_start = data + bytes_read;
1071 data = block_start + uvalue;
1073 data = display_block (block_start, uvalue);
1076 case DW_FORM_block1:
1077 uvalue = byte_get (data, 1);
1078 block_start = data + 1;
1080 data = block_start + uvalue;
1082 data = display_block (block_start, uvalue);
1085 case DW_FORM_block2:
1086 uvalue = byte_get (data, 2);
1087 block_start = data + 2;
1089 data = block_start + uvalue;
1091 data = display_block (block_start, uvalue);
1094 case DW_FORM_block4:
1095 uvalue = byte_get (data, 4);
1096 block_start = data + 4;
1098 data = block_start + uvalue;
1100 data = display_block (block_start, uvalue);
1105 printf (_(" (indirect string, offset: 0x%lx): %s"),
1106 uvalue, fetch_indirect_string (uvalue));
1109 case DW_FORM_indirect:
1110 /* Handled above. */
1114 warn (_("Unrecognized form: %lu\n"), form);
1118 /* For some attributes we can display further information. */
1119 if ((do_loc || do_debug_loc || do_debug_ranges)
1120 && num_debug_info_entries == 0)
1124 case DW_AT_frame_base:
1125 have_frame_base = 1;
1126 case DW_AT_location:
1127 case DW_AT_data_member_location:
1128 case DW_AT_vtable_elem_location:
1129 case DW_AT_allocated:
1130 case DW_AT_associated:
1131 case DW_AT_data_location:
1133 case DW_AT_upper_bound:
1134 case DW_AT_lower_bound:
1135 if (form == DW_FORM_data4 || form == DW_FORM_data8)
1137 /* Process location list. */
1138 unsigned int max = debug_info_p->max_loc_offsets;
1139 unsigned int num = debug_info_p->num_loc_offsets;
1141 if (max == 0 || num >= max)
1144 debug_info_p->loc_offsets
1145 = xcrealloc (debug_info_p->loc_offsets,
1146 max, sizeof (*debug_info_p->loc_offsets));
1147 debug_info_p->have_frame_base
1148 = xcrealloc (debug_info_p->have_frame_base,
1149 max, sizeof (*debug_info_p->have_frame_base));
1150 debug_info_p->max_loc_offsets = max;
1152 debug_info_p->loc_offsets [num] = uvalue;
1153 debug_info_p->have_frame_base [num] = have_frame_base;
1154 debug_info_p->num_loc_offsets++;
1159 if (need_base_address)
1160 debug_info_p->base_address = uvalue;
1164 if (form == DW_FORM_data4 || form == DW_FORM_data8)
1166 /* Process range list. */
1167 unsigned int max = debug_info_p->max_range_lists;
1168 unsigned int num = debug_info_p->num_range_lists;
1170 if (max == 0 || num >= max)
1173 debug_info_p->range_lists
1174 = xcrealloc (debug_info_p->range_lists,
1175 max, sizeof (*debug_info_p->range_lists));
1176 debug_info_p->max_range_lists = max;
1178 debug_info_p->range_lists [num] = uvalue;
1179 debug_info_p->num_range_lists++;
1198 case DW_INL_not_inlined:
1199 printf (_("(not inlined)"));
1201 case DW_INL_inlined:
1202 printf (_("(inlined)"));
1204 case DW_INL_declared_not_inlined:
1205 printf (_("(declared as inline but ignored)"));
1207 case DW_INL_declared_inlined:
1208 printf (_("(declared as inline and inlined)"));
1211 printf (_(" (Unknown inline attribute value: %lx)"), uvalue);
1216 case DW_AT_language:
1219 /* Ordered by the numeric value of these constants. */
1220 case DW_LANG_C89: printf ("(ANSI C)"); break;
1221 case DW_LANG_C: printf ("(non-ANSI C)"); break;
1222 case DW_LANG_Ada83: printf ("(Ada)"); break;
1223 case DW_LANG_C_plus_plus: printf ("(C++)"); break;
1224 case DW_LANG_Cobol74: printf ("(Cobol 74)"); break;
1225 case DW_LANG_Cobol85: printf ("(Cobol 85)"); break;
1226 case DW_LANG_Fortran77: printf ("(FORTRAN 77)"); break;
1227 case DW_LANG_Fortran90: printf ("(Fortran 90)"); break;
1228 case DW_LANG_Pascal83: printf ("(ANSI Pascal)"); break;
1229 case DW_LANG_Modula2: printf ("(Modula 2)"); break;
1230 /* DWARF 2.1 values. */
1231 case DW_LANG_Java: printf ("(Java)"); break;
1232 case DW_LANG_C99: printf ("(ANSI C99)"); break;
1233 case DW_LANG_Ada95: printf ("(ADA 95)"); break;
1234 case DW_LANG_Fortran95: printf ("(Fortran 95)"); break;
1235 /* DWARF 3 values. */
1236 case DW_LANG_PLI: printf ("(PLI)"); break;
1237 case DW_LANG_ObjC: printf ("(Objective C)"); break;
1238 case DW_LANG_ObjC_plus_plus: printf ("(Objective C++)"); break;
1239 case DW_LANG_UPC: printf ("(Unified Parallel C)"); break;
1240 case DW_LANG_D: printf ("(D)"); break;
1241 /* MIPS extension. */
1242 case DW_LANG_Mips_Assembler: printf ("(MIPS assembler)"); break;
1243 /* UPC extension. */
1244 case DW_LANG_Upc: printf ("(Unified Parallel C)"); break;
1246 if (uvalue >= DW_LANG_lo_user && uvalue <= DW_LANG_hi_user)
1247 printf ("(implementation defined: %lx)", uvalue);
1249 printf ("(Unknown: %lx)", uvalue);
1254 case DW_AT_encoding:
1257 case DW_ATE_void: printf ("(void)"); break;
1258 case DW_ATE_address: printf ("(machine address)"); break;
1259 case DW_ATE_boolean: printf ("(boolean)"); break;
1260 case DW_ATE_complex_float: printf ("(complex float)"); break;
1261 case DW_ATE_float: printf ("(float)"); break;
1262 case DW_ATE_signed: printf ("(signed)"); break;
1263 case DW_ATE_signed_char: printf ("(signed char)"); break;
1264 case DW_ATE_unsigned: printf ("(unsigned)"); break;
1265 case DW_ATE_unsigned_char: printf ("(unsigned char)"); break;
1266 /* DWARF 2.1 value. */
1267 case DW_ATE_imaginary_float: printf ("(imaginary float)"); break;
1268 case DW_ATE_decimal_float: printf ("(decimal float)"); break;
1270 if (uvalue >= DW_ATE_lo_user
1271 && uvalue <= DW_ATE_hi_user)
1272 printf ("(user defined type)");
1274 printf ("(unknown type)");
1279 case DW_AT_accessibility:
1282 case DW_ACCESS_public: printf ("(public)"); break;
1283 case DW_ACCESS_protected: printf ("(protected)"); break;
1284 case DW_ACCESS_private: printf ("(private)"); break;
1286 printf ("(unknown accessibility)");
1291 case DW_AT_visibility:
1294 case DW_VIS_local: printf ("(local)"); break;
1295 case DW_VIS_exported: printf ("(exported)"); break;
1296 case DW_VIS_qualified: printf ("(qualified)"); break;
1297 default: printf ("(unknown visibility)"); break;
1301 case DW_AT_virtuality:
1304 case DW_VIRTUALITY_none: printf ("(none)"); break;
1305 case DW_VIRTUALITY_virtual: printf ("(virtual)"); break;
1306 case DW_VIRTUALITY_pure_virtual:printf ("(pure_virtual)"); break;
1307 default: printf ("(unknown virtuality)"); break;
1311 case DW_AT_identifier_case:
1314 case DW_ID_case_sensitive: printf ("(case_sensitive)"); break;
1315 case DW_ID_up_case: printf ("(up_case)"); break;
1316 case DW_ID_down_case: printf ("(down_case)"); break;
1317 case DW_ID_case_insensitive: printf ("(case_insensitive)"); break;
1318 default: printf ("(unknown case)"); break;
1322 case DW_AT_calling_convention:
1325 case DW_CC_normal: printf ("(normal)"); break;
1326 case DW_CC_program: printf ("(program)"); break;
1327 case DW_CC_nocall: printf ("(nocall)"); break;
1329 if (uvalue >= DW_CC_lo_user
1330 && uvalue <= DW_CC_hi_user)
1331 printf ("(user defined)");
1333 printf ("(unknown convention)");
1337 case DW_AT_ordering:
1340 case -1: printf ("(undefined)"); break;
1341 case 0: printf ("(row major)"); break;
1342 case 1: printf ("(column major)"); break;
1346 case DW_AT_frame_base:
1347 have_frame_base = 1;
1348 case DW_AT_location:
1349 case DW_AT_data_member_location:
1350 case DW_AT_vtable_elem_location:
1351 case DW_AT_allocated:
1352 case DW_AT_associated:
1353 case DW_AT_data_location:
1355 case DW_AT_upper_bound:
1356 case DW_AT_lower_bound:
1359 int need_frame_base;
1362 need_frame_base = decode_location_expression (block_start,
1367 if (need_frame_base && !have_frame_base)
1368 printf (_(" [without DW_AT_frame_base]"));
1370 else if (form == DW_FORM_data4 || form == DW_FORM_data8)
1371 printf (_("(location list)"));
1383 get_AT_name (unsigned long attribute)
1387 case DW_AT_sibling: return "DW_AT_sibling";
1388 case DW_AT_location: return "DW_AT_location";
1389 case DW_AT_name: return "DW_AT_name";
1390 case DW_AT_ordering: return "DW_AT_ordering";
1391 case DW_AT_subscr_data: return "DW_AT_subscr_data";
1392 case DW_AT_byte_size: return "DW_AT_byte_size";
1393 case DW_AT_bit_offset: return "DW_AT_bit_offset";
1394 case DW_AT_bit_size: return "DW_AT_bit_size";
1395 case DW_AT_element_list: return "DW_AT_element_list";
1396 case DW_AT_stmt_list: return "DW_AT_stmt_list";
1397 case DW_AT_low_pc: return "DW_AT_low_pc";
1398 case DW_AT_high_pc: return "DW_AT_high_pc";
1399 case DW_AT_language: return "DW_AT_language";
1400 case DW_AT_member: return "DW_AT_member";
1401 case DW_AT_discr: return "DW_AT_discr";
1402 case DW_AT_discr_value: return "DW_AT_discr_value";
1403 case DW_AT_visibility: return "DW_AT_visibility";
1404 case DW_AT_import: return "DW_AT_import";
1405 case DW_AT_string_length: return "DW_AT_string_length";
1406 case DW_AT_common_reference: return "DW_AT_common_reference";
1407 case DW_AT_comp_dir: return "DW_AT_comp_dir";
1408 case DW_AT_const_value: return "DW_AT_const_value";
1409 case DW_AT_containing_type: return "DW_AT_containing_type";
1410 case DW_AT_default_value: return "DW_AT_default_value";
1411 case DW_AT_inline: return "DW_AT_inline";
1412 case DW_AT_is_optional: return "DW_AT_is_optional";
1413 case DW_AT_lower_bound: return "DW_AT_lower_bound";
1414 case DW_AT_producer: return "DW_AT_producer";
1415 case DW_AT_prototyped: return "DW_AT_prototyped";
1416 case DW_AT_return_addr: return "DW_AT_return_addr";
1417 case DW_AT_start_scope: return "DW_AT_start_scope";
1418 case DW_AT_stride_size: return "DW_AT_stride_size";
1419 case DW_AT_upper_bound: return "DW_AT_upper_bound";
1420 case DW_AT_abstract_origin: return "DW_AT_abstract_origin";
1421 case DW_AT_accessibility: return "DW_AT_accessibility";
1422 case DW_AT_address_class: return "DW_AT_address_class";
1423 case DW_AT_artificial: return "DW_AT_artificial";
1424 case DW_AT_base_types: return "DW_AT_base_types";
1425 case DW_AT_calling_convention: return "DW_AT_calling_convention";
1426 case DW_AT_count: return "DW_AT_count";
1427 case DW_AT_data_member_location: return "DW_AT_data_member_location";
1428 case DW_AT_decl_column: return "DW_AT_decl_column";
1429 case DW_AT_decl_file: return "DW_AT_decl_file";
1430 case DW_AT_decl_line: return "DW_AT_decl_line";
1431 case DW_AT_declaration: return "DW_AT_declaration";
1432 case DW_AT_discr_list: return "DW_AT_discr_list";
1433 case DW_AT_encoding: return "DW_AT_encoding";
1434 case DW_AT_external: return "DW_AT_external";
1435 case DW_AT_frame_base: return "DW_AT_frame_base";
1436 case DW_AT_friend: return "DW_AT_friend";
1437 case DW_AT_identifier_case: return "DW_AT_identifier_case";
1438 case DW_AT_macro_info: return "DW_AT_macro_info";
1439 case DW_AT_namelist_items: return "DW_AT_namelist_items";
1440 case DW_AT_priority: return "DW_AT_priority";
1441 case DW_AT_segment: return "DW_AT_segment";
1442 case DW_AT_specification: return "DW_AT_specification";
1443 case DW_AT_static_link: return "DW_AT_static_link";
1444 case DW_AT_type: return "DW_AT_type";
1445 case DW_AT_use_location: return "DW_AT_use_location";
1446 case DW_AT_variable_parameter: return "DW_AT_variable_parameter";
1447 case DW_AT_virtuality: return "DW_AT_virtuality";
1448 case DW_AT_vtable_elem_location: return "DW_AT_vtable_elem_location";
1449 /* DWARF 2.1 values. */
1450 case DW_AT_allocated: return "DW_AT_allocated";
1451 case DW_AT_associated: return "DW_AT_associated";
1452 case DW_AT_data_location: return "DW_AT_data_location";
1453 case DW_AT_stride: return "DW_AT_stride";
1454 case DW_AT_entry_pc: return "DW_AT_entry_pc";
1455 case DW_AT_use_UTF8: return "DW_AT_use_UTF8";
1456 case DW_AT_extension: return "DW_AT_extension";
1457 case DW_AT_ranges: return "DW_AT_ranges";
1458 case DW_AT_trampoline: return "DW_AT_trampoline";
1459 case DW_AT_call_column: return "DW_AT_call_column";
1460 case DW_AT_call_file: return "DW_AT_call_file";
1461 case DW_AT_call_line: return "DW_AT_call_line";
1462 /* SGI/MIPS extensions. */
1463 case DW_AT_MIPS_fde: return "DW_AT_MIPS_fde";
1464 case DW_AT_MIPS_loop_begin: return "DW_AT_MIPS_loop_begin";
1465 case DW_AT_MIPS_tail_loop_begin: return "DW_AT_MIPS_tail_loop_begin";
1466 case DW_AT_MIPS_epilog_begin: return "DW_AT_MIPS_epilog_begin";
1467 case DW_AT_MIPS_loop_unroll_factor: return "DW_AT_MIPS_loop_unroll_factor";
1468 case DW_AT_MIPS_software_pipeline_depth:
1469 return "DW_AT_MIPS_software_pipeline_depth";
1470 case DW_AT_MIPS_linkage_name: return "DW_AT_MIPS_linkage_name";
1471 case DW_AT_MIPS_stride: return "DW_AT_MIPS_stride";
1472 case DW_AT_MIPS_abstract_name: return "DW_AT_MIPS_abstract_name";
1473 case DW_AT_MIPS_clone_origin: return "DW_AT_MIPS_clone_origin";
1474 case DW_AT_MIPS_has_inlines: return "DW_AT_MIPS_has_inlines";
1475 /* GNU extensions. */
1476 case DW_AT_sf_names: return "DW_AT_sf_names";
1477 case DW_AT_src_info: return "DW_AT_src_info";
1478 case DW_AT_mac_info: return "DW_AT_mac_info";
1479 case DW_AT_src_coords: return "DW_AT_src_coords";
1480 case DW_AT_body_begin: return "DW_AT_body_begin";
1481 case DW_AT_body_end: return "DW_AT_body_end";
1482 case DW_AT_GNU_vector: return "DW_AT_GNU_vector";
1483 /* UPC extension. */
1484 case DW_AT_upc_threads_scaled: return "DW_AT_upc_threads_scaled";
1487 static char buffer[100];
1489 snprintf (buffer, sizeof (buffer), _("Unknown AT value: %lx"),
1496 static unsigned char *
1497 read_and_display_attr (unsigned long attribute,
1499 unsigned char *data,
1500 unsigned long cu_offset,
1501 unsigned long pointer_size,
1502 unsigned long offset_size,
1504 debug_info *debug_info_p,
1508 printf (" %-18s:", get_AT_name (attribute));
1509 data = read_and_display_attr_value (attribute, form, data, cu_offset,
1510 pointer_size, offset_size,
1511 dwarf_version, debug_info_p,
1519 /* Process the contents of a .debug_info section. If do_loc is non-zero
1520 then we are scanning for location lists and we do not want to display
1521 anything to the user. */
1524 process_debug_info (struct dwarf_section *section, void *file,
1527 unsigned char *start = section->start;
1528 unsigned char *end = start + section->size;
1529 unsigned char *section_begin;
1531 unsigned int num_units = 0;
1533 if ((do_loc || do_debug_loc || do_debug_ranges)
1534 && num_debug_info_entries == 0)
1536 unsigned long length;
1538 /* First scan the section to get the number of comp units. */
1539 for (section_begin = start, num_units = 0; section_begin < end;
1542 /* Read the first 4 bytes. For a 32-bit DWARF section, this
1543 will be the length. For a 64-bit DWARF section, it'll be
1544 the escape code 0xffffffff followed by an 8 byte length. */
1545 length = byte_get (section_begin, 4);
1547 if (length == 0xffffffff)
1549 length = byte_get (section_begin + 4, 8);
1550 section_begin += length + 12;
1553 section_begin += length + 4;
1555 /* Negative values are illegal, they may even cause infinite
1556 looping. This can happen if we can't accurately apply
1557 relocations to an object file. */
1558 if ((signed long) length <= 0)
1560 warn (_("Corrupt unit length (%lx) found in section %s\n"), length, section->name);
1567 error (_("No comp units in %s section ?"), section->name);
1571 /* Then allocate an array to hold the information. */
1572 debug_information = cmalloc (num_units,
1573 sizeof (* debug_information));
1574 if (debug_information == NULL)
1576 error (_("Not enough memory for a debug info array of %u entries"),
1584 printf (_("The section %s contains:\n\n"), section->name);
1586 load_debug_section (str, file);
1589 load_debug_section (abbrev, file);
1590 if (debug_displays [abbrev].section.start == NULL)
1592 warn (_("Unable to locate %s section!\n"),
1593 debug_displays [abbrev].section.name);
1597 for (section_begin = start, unit = 0; start < end; unit++)
1599 DWARF2_Internal_CompUnit compunit;
1600 unsigned char *hdrptr;
1601 unsigned char *cu_abbrev_offset_ptr;
1602 unsigned char *tags;
1604 unsigned long cu_offset;
1606 int initial_length_size;
1610 compunit.cu_length = byte_get (hdrptr, 4);
1613 if (compunit.cu_length == 0xffffffff)
1615 compunit.cu_length = byte_get (hdrptr, 8);
1618 initial_length_size = 12;
1623 initial_length_size = 4;
1626 compunit.cu_version = byte_get (hdrptr, 2);
1629 cu_offset = start - section_begin;
1631 cu_abbrev_offset_ptr = hdrptr;
1632 compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size);
1633 hdrptr += offset_size;
1635 compunit.cu_pointer_size = byte_get (hdrptr, 1);
1637 if ((do_loc || do_debug_loc || do_debug_ranges)
1638 && num_debug_info_entries == 0)
1640 debug_information [unit].cu_offset = cu_offset;
1641 debug_information [unit].pointer_size
1642 = compunit.cu_pointer_size;
1643 debug_information [unit].base_address = 0;
1644 debug_information [unit].loc_offsets = NULL;
1645 debug_information [unit].have_frame_base = NULL;
1646 debug_information [unit].max_loc_offsets = 0;
1647 debug_information [unit].num_loc_offsets = 0;
1648 debug_information [unit].range_lists = NULL;
1649 debug_information [unit].max_range_lists= 0;
1650 debug_information [unit].num_range_lists = 0;
1655 printf (_(" Compilation Unit @ offset 0x%lx:\n"), cu_offset);
1656 printf (_(" Length: %ld\n"), compunit.cu_length);
1657 printf (_(" Version: %d\n"), compunit.cu_version);
1658 printf (_(" Abbrev Offset: %ld\n"), compunit.cu_abbrev_offset);
1659 printf (_(" Pointer Size: %d\n"), compunit.cu_pointer_size);
1662 if (cu_offset + compunit.cu_length + initial_length_size
1665 warn (_("Debug info is corrupted, length is invalid (section is %lu bytes)\n"),
1666 (unsigned long)section->size);
1670 start += compunit.cu_length + initial_length_size;
1672 if (compunit.cu_version != 2 && compunit.cu_version != 3)
1674 warn (_("Only version 2 and 3 DWARF debug information is currently supported.\n"));
1680 /* Process the abbrevs used by this compilation unit. DWARF
1681 sections under Mach-O have non-zero addresses. */
1682 if (compunit.cu_abbrev_offset >= debug_displays [abbrev].section.size)
1683 warn (_("Debug info is corrupted, abbrev offset is invalid (section is %lu bytes)\n"),
1684 (unsigned long)debug_displays [abbrev].section.size);
1686 process_abbrev_section
1687 ((unsigned char *) debug_displays [abbrev].section.start
1688 + compunit.cu_abbrev_offset - debug_displays [abbrev].section.address,
1689 (unsigned char *) debug_displays [abbrev].section.start
1690 + debug_displays [abbrev].section.size);
1693 while (tags < start)
1695 unsigned int bytes_read;
1696 unsigned long abbrev_number;
1697 abbrev_entry *entry;
1700 abbrev_number = read_leb128 (tags, & bytes_read, 0);
1703 /* A null DIE marks the end of a list of children. */
1704 if (abbrev_number == 0)
1711 printf (_(" <%d><%lx>: Abbrev Number: %lu"),
1713 (unsigned long) (tags - section_begin
1717 /* Scan through the abbreviation list until we reach the
1719 for (entry = first_abbrev;
1720 entry && entry->entry != abbrev_number;
1721 entry = entry->next)
1731 warn (_("Unable to locate entry %lu in the abbreviation table\n"),
1737 printf (_(" (%s)\n"), get_TAG_name (entry->tag));
1742 need_base_address = 0;
1744 case DW_TAG_compile_unit:
1745 need_base_address = 1;
1747 case DW_TAG_entry_point:
1748 case DW_TAG_subprogram:
1749 need_base_address = 0;
1750 /* Assuming that there is no DW_AT_frame_base. */
1751 have_frame_base = 0;
1755 for (attr = entry->first_attr; attr; attr = attr->next)
1758 /* Show the offset from where the tag was extracted. */
1759 printf (" <%2lx>", (unsigned long)(tags - section_begin));
1761 tags = read_and_display_attr (attr->attribute,
1764 compunit.cu_pointer_size,
1766 compunit.cu_version,
1767 &debug_information [unit],
1771 if (entry->children)
1776 /* Set num_debug_info_entries here so that it can be used to check if
1777 we need to process .debug_loc and .debug_ranges sections. */
1778 if ((do_loc || do_debug_loc || do_debug_ranges)
1779 && num_debug_info_entries == 0)
1780 num_debug_info_entries = num_units;
1790 /* Locate and scan the .debug_info section in the file and record the pointer
1791 sizes and offsets for the compilation units in it. Usually an executable
1792 will have just one pointer size, but this is not guaranteed, and so we try
1793 not to make any assumptions. Returns zero upon failure, or the number of
1794 compilation units upon success. */
1797 load_debug_info (void * file)
1799 /* Reset the last pointer size so that we can issue correct error
1800 messages if we are displaying the contents of more than one section. */
1801 last_pointer_size = 0;
1802 warned_about_missing_comp_units = FALSE;
1804 /* If we already have the information there is nothing else to do. */
1805 if (num_debug_info_entries > 0)
1806 return num_debug_info_entries;
1808 if (load_debug_section (info, file)
1809 && process_debug_info (&debug_displays [info].section, file, 1))
1810 return num_debug_info_entries;
1816 display_debug_lines (struct dwarf_section *section, void *file)
1818 unsigned char *start = section->start;
1819 unsigned char *data = start;
1820 unsigned char *end = start + section->size;
1822 printf (_("\nDump of debug contents of section %s:\n\n"),
1825 load_debug_info (file);
1829 DWARF2_Internal_LineInfo info;
1830 unsigned char *standard_opcodes;
1831 unsigned char *end_of_sequence;
1832 unsigned char *hdrptr;
1833 unsigned long hdroff;
1834 int initial_length_size;
1839 hdroff = hdrptr - start;
1841 /* Check the length of the block. */
1842 info.li_length = byte_get (hdrptr, 4);
1845 if (info.li_length == 0xffffffff)
1847 /* This section is 64-bit DWARF 3. */
1848 info.li_length = byte_get (hdrptr, 8);
1851 initial_length_size = 12;
1856 initial_length_size = 4;
1859 if (info.li_length + initial_length_size > section->size)
1862 (_("The line info appears to be corrupt - the section is too small\n"));
1866 /* Check its version number. */
1867 info.li_version = byte_get (hdrptr, 2);
1869 if (info.li_version != 2 && info.li_version != 3)
1871 warn (_("Only DWARF version 2 and 3 line info is currently supported.\n"));
1875 info.li_prologue_length = byte_get (hdrptr, offset_size);
1876 hdrptr += offset_size;
1877 info.li_min_insn_length = byte_get (hdrptr, 1);
1879 info.li_default_is_stmt = byte_get (hdrptr, 1);
1881 info.li_line_base = byte_get (hdrptr, 1);
1883 info.li_line_range = byte_get (hdrptr, 1);
1885 info.li_opcode_base = byte_get (hdrptr, 1);
1888 /* Sign extend the line base field. */
1889 info.li_line_base <<= 24;
1890 info.li_line_base >>= 24;
1892 printf (_(" Offset: 0x%lx\n"), hdroff);
1893 printf (_(" Length: %ld\n"), info.li_length);
1894 printf (_(" DWARF Version: %d\n"), info.li_version);
1895 printf (_(" Prologue Length: %d\n"), info.li_prologue_length);
1896 printf (_(" Minimum Instruction Length: %d\n"), info.li_min_insn_length);
1897 printf (_(" Initial value of 'is_stmt': %d\n"), info.li_default_is_stmt);
1898 printf (_(" Line Base: %d\n"), info.li_line_base);
1899 printf (_(" Line Range: %d\n"), info.li_line_range);
1900 printf (_(" Opcode Base: %d\n"), info.li_opcode_base);
1902 end_of_sequence = data + info.li_length + initial_length_size;
1904 reset_state_machine (info.li_default_is_stmt);
1906 /* Display the contents of the Opcodes table. */
1907 standard_opcodes = hdrptr;
1909 printf (_("\n Opcodes:\n"));
1911 for (i = 1; i < info.li_opcode_base; i++)
1912 printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]);
1914 /* Display the contents of the Directory table. */
1915 data = standard_opcodes + info.li_opcode_base - 1;
1918 printf (_("\n The Directory Table is empty.\n"));
1921 printf (_("\n The Directory Table:\n"));
1925 printf (_(" %s\n"), data);
1927 data += strlen ((char *) data) + 1;
1931 /* Skip the NUL at the end of the table. */
1934 /* Display the contents of the File Name table. */
1936 printf (_("\n The File Name Table is empty.\n"));
1939 printf (_("\n The File Name Table:\n"));
1940 printf (_(" Entry\tDir\tTime\tSize\tName\n"));
1944 unsigned char *name;
1945 unsigned int bytes_read;
1947 printf (_(" %d\t"), ++state_machine_regs.last_file_entry);
1950 data += strlen ((char *) data) + 1;
1952 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
1954 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
1956 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
1958 printf (_("%s\n"), name);
1962 /* Skip the NUL at the end of the table. */
1965 /* Now display the statements. */
1966 printf (_("\n Line Number Statements:\n"));
1968 while (data < end_of_sequence)
1970 unsigned char op_code;
1972 unsigned long int uladv;
1973 unsigned int bytes_read;
1977 if (op_code >= info.li_opcode_base)
1979 op_code -= info.li_opcode_base;
1980 uladv = (op_code / info.li_line_range) * info.li_min_insn_length;
1981 state_machine_regs.address += uladv;
1982 printf (_(" Special opcode %d: advance Address by %lu to 0x%lx"),
1983 op_code, uladv, state_machine_regs.address);
1984 adv = (op_code % info.li_line_range) + info.li_line_base;
1985 state_machine_regs.line += adv;
1986 printf (_(" and Line by %d to %d\n"),
1987 adv, state_machine_regs.line);
1989 else switch (op_code)
1991 case DW_LNS_extended_op:
1992 data += process_extended_line_op (data, info.li_default_is_stmt);
1996 printf (_(" Copy\n"));
1999 case DW_LNS_advance_pc:
2000 uladv = read_leb128 (data, & bytes_read, 0);
2001 uladv *= info.li_min_insn_length;
2003 state_machine_regs.address += uladv;
2004 printf (_(" Advance PC by %lu to 0x%lx\n"), uladv,
2005 state_machine_regs.address);
2008 case DW_LNS_advance_line:
2009 adv = read_leb128 (data, & bytes_read, 1);
2011 state_machine_regs.line += adv;
2012 printf (_(" Advance Line by %d to %d\n"), adv,
2013 state_machine_regs.line);
2016 case DW_LNS_set_file:
2017 adv = read_leb128 (data, & bytes_read, 0);
2019 printf (_(" Set File Name to entry %d in the File Name Table\n"),
2021 state_machine_regs.file = adv;
2024 case DW_LNS_set_column:
2025 uladv = read_leb128 (data, & bytes_read, 0);
2027 printf (_(" Set column to %lu\n"), uladv);
2028 state_machine_regs.column = uladv;
2031 case DW_LNS_negate_stmt:
2032 adv = state_machine_regs.is_stmt;
2034 printf (_(" Set is_stmt to %d\n"), adv);
2035 state_machine_regs.is_stmt = adv;
2038 case DW_LNS_set_basic_block:
2039 printf (_(" Set basic block\n"));
2040 state_machine_regs.basic_block = 1;
2043 case DW_LNS_const_add_pc:
2044 uladv = (((255 - info.li_opcode_base) / info.li_line_range)
2045 * info.li_min_insn_length);
2046 state_machine_regs.address += uladv;
2047 printf (_(" Advance PC by constant %lu to 0x%lx\n"), uladv,
2048 state_machine_regs.address);
2051 case DW_LNS_fixed_advance_pc:
2052 uladv = byte_get (data, 2);
2054 state_machine_regs.address += uladv;
2055 printf (_(" Advance PC by fixed size amount %lu to 0x%lx\n"),
2056 uladv, state_machine_regs.address);
2059 case DW_LNS_set_prologue_end:
2060 printf (_(" Set prologue_end to true\n"));
2063 case DW_LNS_set_epilogue_begin:
2064 printf (_(" Set epilogue_begin to true\n"));
2067 case DW_LNS_set_isa:
2068 uladv = read_leb128 (data, & bytes_read, 0);
2070 printf (_(" Set ISA to %lu\n"), uladv);
2074 printf (_(" Unknown opcode %d with operands: "), op_code);
2076 for (i = standard_opcodes[op_code - 1]; i > 0 ; --i)
2078 printf ("0x%lx%s", read_leb128 (data, &bytes_read, 0),
2079 i == 1 ? "" : ", ");
2093 display_debug_pubnames (struct dwarf_section *section,
2094 void *file ATTRIBUTE_UNUSED)
2096 DWARF2_Internal_PubNames pubnames;
2097 unsigned char *start = section->start;
2098 unsigned char *end = start + section->size;
2100 printf (_("Contents of the %s section:\n\n"), section->name);
2104 unsigned char *data;
2105 unsigned long offset;
2106 int offset_size, initial_length_size;
2110 pubnames.pn_length = byte_get (data, 4);
2112 if (pubnames.pn_length == 0xffffffff)
2114 pubnames.pn_length = byte_get (data, 8);
2117 initial_length_size = 12;
2122 initial_length_size = 4;
2125 pubnames.pn_version = byte_get (data, 2);
2127 pubnames.pn_offset = byte_get (data, offset_size);
2128 data += offset_size;
2129 pubnames.pn_size = byte_get (data, offset_size);
2130 data += offset_size;
2132 start += pubnames.pn_length + initial_length_size;
2134 if (pubnames.pn_version != 2 && pubnames.pn_version != 3)
2136 static int warned = 0;
2140 warn (_("Only DWARF 2 and 3 pubnames are currently supported\n"));
2147 printf (_(" Length: %ld\n"),
2148 pubnames.pn_length);
2149 printf (_(" Version: %d\n"),
2150 pubnames.pn_version);
2151 printf (_(" Offset into .debug_info section: %ld\n"),
2152 pubnames.pn_offset);
2153 printf (_(" Size of area in .debug_info section: %ld\n"),
2156 printf (_("\n Offset\tName\n"));
2160 offset = byte_get (data, offset_size);
2164 data += offset_size;
2165 printf (" %-6ld\t\t%s\n", offset, data);
2166 data += strlen ((char *) data) + 1;
2169 while (offset != 0);
2177 display_debug_macinfo (struct dwarf_section *section,
2178 void *file ATTRIBUTE_UNUSED)
2180 unsigned char *start = section->start;
2181 unsigned char *end = start + section->size;
2182 unsigned char *curr = start;
2183 unsigned int bytes_read;
2184 enum dwarf_macinfo_record_type op;
2186 printf (_("Contents of the %s section:\n\n"), section->name);
2190 unsigned int lineno;
2198 case DW_MACINFO_start_file:
2200 unsigned int filenum;
2202 lineno = read_leb128 (curr, & bytes_read, 0);
2204 filenum = read_leb128 (curr, & bytes_read, 0);
2207 printf (_(" DW_MACINFO_start_file - lineno: %d filenum: %d\n"),
2212 case DW_MACINFO_end_file:
2213 printf (_(" DW_MACINFO_end_file\n"));
2216 case DW_MACINFO_define:
2217 lineno = read_leb128 (curr, & bytes_read, 0);
2219 string = (char *) curr;
2220 curr += strlen (string) + 1;
2221 printf (_(" DW_MACINFO_define - lineno : %d macro : %s\n"),
2225 case DW_MACINFO_undef:
2226 lineno = read_leb128 (curr, & bytes_read, 0);
2228 string = (char *) curr;
2229 curr += strlen (string) + 1;
2230 printf (_(" DW_MACINFO_undef - lineno : %d macro : %s\n"),
2234 case DW_MACINFO_vendor_ext:
2236 unsigned int constant;
2238 constant = read_leb128 (curr, & bytes_read, 0);
2240 string = (char *) curr;
2241 curr += strlen (string) + 1;
2242 printf (_(" DW_MACINFO_vendor_ext - constant : %d string : %s\n"),
2253 display_debug_abbrev (struct dwarf_section *section,
2254 void *file ATTRIBUTE_UNUSED)
2256 abbrev_entry *entry;
2257 unsigned char *start = section->start;
2258 unsigned char *end = start + section->size;
2260 printf (_("Contents of the %s section:\n\n"), section->name);
2266 start = process_abbrev_section (start, end);
2268 if (first_abbrev == NULL)
2271 printf (_(" Number TAG\n"));
2273 for (entry = first_abbrev; entry; entry = entry->next)
2277 printf (_(" %ld %s [%s]\n"),
2279 get_TAG_name (entry->tag),
2280 entry->children ? _("has children") : _("no children"));
2282 for (attr = entry->first_attr; attr; attr = attr->next)
2283 printf (_(" %-18s %s\n"),
2284 get_AT_name (attr->attribute),
2285 get_FORM_name (attr->form));
2296 display_debug_loc (struct dwarf_section *section, void *file)
2298 unsigned char *start = section->start;
2299 unsigned char *section_end;
2300 unsigned long bytes;
2301 unsigned char *section_begin = start;
2302 unsigned int num_loc_list = 0;
2303 unsigned long last_offset = 0;
2304 unsigned int first = 0;
2307 int seen_first_offset = 0;
2308 int use_debug_info = 1;
2309 unsigned char *next;
2311 bytes = section->size;
2312 section_end = start + bytes;
2316 printf (_("\nThe %s section is empty.\n"), section->name);
2320 load_debug_info (file);
2322 /* Check the order of location list in .debug_info section. If
2323 offsets of location lists are in the ascending order, we can
2324 use `debug_information' directly. */
2325 for (i = 0; i < num_debug_info_entries; i++)
2329 num = debug_information [i].num_loc_offsets;
2330 num_loc_list += num;
2332 /* Check if we can use `debug_information' directly. */
2333 if (use_debug_info && num != 0)
2335 if (!seen_first_offset)
2337 /* This is the first location list. */
2338 last_offset = debug_information [i].loc_offsets [0];
2340 seen_first_offset = 1;
2346 for (; j < num; j++)
2349 debug_information [i].loc_offsets [j])
2354 last_offset = debug_information [i].loc_offsets [j];
2359 if (!use_debug_info)
2360 /* FIXME: Should we handle this case? */
2361 error (_("Location lists in .debug_info section aren't in ascending order!\n"));
2363 if (!seen_first_offset)
2364 error (_("No location lists in .debug_info section!\n"));
2366 /* DWARF sections under Mach-O have non-zero addresses. */
2367 if (debug_information [first].num_loc_offsets > 0
2368 && debug_information [first].loc_offsets [0] != section->address)
2369 warn (_("Location lists in %s section start at 0x%lx\n"),
2370 section->name, debug_information [first].loc_offsets [0]);
2372 printf (_("Contents of the %s section:\n\n"), section->name);
2373 printf (_(" Offset Begin End Expression\n"));
2375 seen_first_offset = 0;
2376 for (i = first; i < num_debug_info_entries; i++)
2378 unsigned long begin;
2380 unsigned short length;
2381 unsigned long offset;
2382 unsigned int pointer_size;
2383 unsigned long cu_offset;
2384 unsigned long base_address;
2385 int need_frame_base;
2388 pointer_size = debug_information [i].pointer_size;
2389 cu_offset = debug_information [i].cu_offset;
2391 for (j = 0; j < debug_information [i].num_loc_offsets; j++)
2393 has_frame_base = debug_information [i].have_frame_base [j];
2394 /* DWARF sections under Mach-O have non-zero addresses. */
2395 offset = debug_information [i].loc_offsets [j] - section->address;
2396 next = section_begin + offset;
2397 base_address = debug_information [i].base_address;
2399 if (!seen_first_offset)
2400 seen_first_offset = 1;
2404 warn (_("There is a hole [0x%lx - 0x%lx] in .debug_loc section.\n"),
2405 (long)(start - section_begin), (long)(next - section_begin));
2406 else if (start > next)
2407 warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"),
2408 (long)(start - section_begin), (long)(next - section_begin));
2412 if (offset >= bytes)
2414 warn (_("Offset 0x%lx is bigger than .debug_loc section size.\n"),
2421 if (start + 2 * pointer_size > section_end)
2423 warn (_("Location list starting at offset 0x%lx is not terminated.\n"),
2428 begin = byte_get (start, pointer_size);
2429 start += pointer_size;
2430 end = byte_get (start, pointer_size);
2431 start += pointer_size;
2433 if (begin == 0 && end == 0)
2435 printf (_(" %8.8lx <End of list>\n"), offset);
2439 /* Check base address specifiers. */
2440 if (begin == -1UL && end != -1UL)
2443 printf (_(" %8.8lx %8.8lx %8.8lx (base address)\n"),
2444 offset, begin, end);
2448 if (start + 2 > section_end)
2450 warn (_("Location list starting at offset 0x%lx is not terminated.\n"),
2455 length = byte_get (start, 2);
2458 if (start + length > section_end)
2460 warn (_("Location list starting at offset 0x%lx is not terminated.\n"),
2465 printf (" %8.8lx %8.8lx %8.8lx (",
2466 offset, begin + base_address, end + base_address);
2467 need_frame_base = decode_location_expression (start,
2473 if (need_frame_base && !has_frame_base)
2474 printf (_(" [without DW_AT_frame_base]"));
2477 fputs (_(" (start == end)"), stdout);
2478 else if (begin > end)
2479 fputs (_(" (start > end)"), stdout);
2491 display_debug_str (struct dwarf_section *section,
2492 void *file ATTRIBUTE_UNUSED)
2494 unsigned char *start = section->start;
2495 unsigned long bytes = section->size;
2496 dwarf_vma addr = section->address;
2500 printf (_("\nThe %s section is empty.\n"), section->name);
2504 printf (_("Contents of the %s section:\n\n"), section->name);
2512 lbytes = (bytes > 16 ? 16 : bytes);
2514 printf (" 0x%8.8lx ", (unsigned long) addr);
2516 for (j = 0; j < 16; j++)
2519 printf ("%2.2x", start[j]);
2527 for (j = 0; j < lbytes; j++)
2530 if (k >= ' ' && k < 0x80)
2549 display_debug_info (struct dwarf_section *section, void *file)
2551 return process_debug_info (section, file, 0);
2556 display_debug_aranges (struct dwarf_section *section,
2557 void *file ATTRIBUTE_UNUSED)
2559 unsigned char *start = section->start;
2560 unsigned char *end = start + section->size;
2562 printf (_("The section %s contains:\n\n"), section->name);
2566 unsigned char *hdrptr;
2567 DWARF2_Internal_ARange arange;
2568 unsigned char *ranges;
2569 unsigned long length;
2570 unsigned long address;
2571 unsigned char address_size;
2574 int initial_length_size;
2578 arange.ar_length = byte_get (hdrptr, 4);
2581 if (arange.ar_length == 0xffffffff)
2583 arange.ar_length = byte_get (hdrptr, 8);
2586 initial_length_size = 12;
2591 initial_length_size = 4;
2594 arange.ar_version = byte_get (hdrptr, 2);
2597 arange.ar_info_offset = byte_get (hdrptr, offset_size);
2598 hdrptr += offset_size;
2600 arange.ar_pointer_size = byte_get (hdrptr, 1);
2603 arange.ar_segment_size = byte_get (hdrptr, 1);
2606 if (arange.ar_version != 2 && arange.ar_version != 3)
2608 warn (_("Only DWARF 2 and 3 aranges are currently supported.\n"));
2612 printf (_(" Length: %ld\n"), arange.ar_length);
2613 printf (_(" Version: %d\n"), arange.ar_version);
2614 printf (_(" Offset into .debug_info: %lx\n"), arange.ar_info_offset);
2615 printf (_(" Pointer Size: %d\n"), arange.ar_pointer_size);
2616 printf (_(" Segment Size: %d\n"), arange.ar_segment_size);
2618 address_size = arange.ar_pointer_size + arange.ar_segment_size;
2620 /* The DWARF spec does not require that the address size be a power
2621 of two, but we do. This will have to change if we ever encounter
2622 an uneven architecture. */
2623 if ((address_size & (address_size - 1)) != 0)
2625 warn (_("Pointer size + Segment size is not a power of two.\n"));
2629 if (address_size > 4)
2630 printf (_("\n Address Length\n"));
2632 printf (_("\n Address Length\n"));
2636 /* Must pad to an alignment boundary that is twice the address size. */
2637 excess = (hdrptr - start) % (2 * address_size);
2639 ranges += (2 * address_size) - excess;
2641 start += arange.ar_length + initial_length_size;
2643 while (ranges + 2 * address_size <= start)
2645 address = byte_get (ranges, address_size);
2647 ranges += address_size;
2649 length = byte_get (ranges, address_size);
2651 ranges += address_size;
2653 if (address_size > 4)
2654 printf (" 0x%16.16lx 0x%lx\n", address, length);
2656 printf (" 0x%8.8lx 0x%lx\n", address, length);
2666 display_debug_ranges (struct dwarf_section *section,
2667 void *file ATTRIBUTE_UNUSED)
2669 unsigned char *start = section->start;
2670 unsigned char *section_end;
2671 unsigned long bytes;
2672 unsigned char *section_begin = start;
2673 unsigned int num_range_list = 0;
2674 unsigned long last_offset = 0;
2675 unsigned int first = 0;
2678 int seen_first_offset = 0;
2679 int use_debug_info = 1;
2680 unsigned char *next;
2682 bytes = section->size;
2683 section_end = start + bytes;
2687 printf (_("\nThe %s section is empty.\n"), section->name);
2691 load_debug_info (file);
2693 /* Check the order of range list in .debug_info section. If
2694 offsets of range lists are in the ascending order, we can
2695 use `debug_information' directly. */
2696 for (i = 0; i < num_debug_info_entries; i++)
2700 num = debug_information [i].num_range_lists;
2701 num_range_list += num;
2703 /* Check if we can use `debug_information' directly. */
2704 if (use_debug_info && num != 0)
2706 if (!seen_first_offset)
2708 /* This is the first range list. */
2709 last_offset = debug_information [i].range_lists [0];
2711 seen_first_offset = 1;
2717 for (; j < num; j++)
2720 debug_information [i].range_lists [j])
2725 last_offset = debug_information [i].range_lists [j];
2730 if (!use_debug_info)
2731 /* FIXME: Should we handle this case? */
2732 error (_("Range lists in .debug_info section aren't in ascending order!\n"));
2734 if (!seen_first_offset)
2735 error (_("No range lists in .debug_info section!\n"));
2737 /* DWARF sections under Mach-O have non-zero addresses. */
2738 if (debug_information [first].num_range_lists > 0
2739 && debug_information [first].range_lists [0] != section->address)
2740 warn (_("Range lists in %s section start at 0x%lx\n"),
2741 section->name, debug_information [first].range_lists [0]);
2743 printf (_("Contents of the %s section:\n\n"), section->name);
2744 printf (_(" Offset Begin End\n"));
2746 seen_first_offset = 0;
2747 for (i = first; i < num_debug_info_entries; i++)
2749 unsigned long begin;
2751 unsigned long offset;
2752 unsigned int pointer_size;
2753 unsigned long base_address;
2755 pointer_size = debug_information [i].pointer_size;
2757 for (j = 0; j < debug_information [i].num_range_lists; j++)
2759 /* DWARF sections under Mach-O have non-zero addresses. */
2760 offset = debug_information [i].range_lists [j] - section->address;
2761 next = section_begin + offset;
2762 base_address = debug_information [i].base_address;
2764 if (!seen_first_offset)
2765 seen_first_offset = 1;
2769 warn (_("There is a hole [0x%lx - 0x%lx] in %s section.\n"),
2770 (long)(start - section_begin),
2771 (long)(next - section_begin), section->name);
2772 else if (start > next)
2773 warn (_("There is an overlap [0x%lx - 0x%lx] in %s section.\n"),
2774 (long)(start - section_begin),
2775 (long)(next - section_begin), section->name);
2781 begin = byte_get (start, pointer_size);
2782 start += pointer_size;
2783 end = byte_get (start, pointer_size);
2784 start += pointer_size;
2786 if (begin == 0 && end == 0)
2788 printf (_(" %8.8lx <End of list>\n"), offset);
2792 /* Check base address specifiers. */
2793 if (begin == -1UL && end != -1UL)
2796 printf (" %8.8lx %8.8lx %8.8lx (base address)\n",
2797 offset, begin, end);
2801 printf (" %8.8lx %8.8lx %8.8lx",
2802 offset, begin + base_address, end + base_address);
2805 fputs (_(" (start == end)"), stdout);
2806 else if (begin > end)
2807 fputs (_(" (start > end)"), stdout);
2817 typedef struct Frame_Chunk
2819 struct Frame_Chunk *next;
2820 unsigned char *chunk_start;
2822 /* DW_CFA_{undefined,same_value,offset,register,unreferenced} */
2823 short int *col_type;
2826 unsigned int code_factor;
2828 unsigned long pc_begin;
2829 unsigned long pc_range;
2833 unsigned char fde_encoding;
2834 unsigned char cfa_exp;
2838 /* A marker for a col_type that means this column was never referenced
2839 in the frame info. */
2840 #define DW_CFA_unreferenced (-1)
2843 frame_need_space (Frame_Chunk *fc, int reg)
2845 int prev = fc->ncols;
2847 if (reg < fc->ncols)
2850 fc->ncols = reg + 1;
2851 fc->col_type = xcrealloc (fc->col_type, fc->ncols, sizeof (short int));
2852 fc->col_offset = xcrealloc (fc->col_offset, fc->ncols, sizeof (int));
2854 while (prev < fc->ncols)
2856 fc->col_type[prev] = DW_CFA_unreferenced;
2857 fc->col_offset[prev] = 0;
2863 frame_display_row (Frame_Chunk *fc, int *need_col_headers, int *max_regs)
2868 if (*max_regs < fc->ncols)
2869 *max_regs = fc->ncols;
2871 if (*need_col_headers)
2873 *need_col_headers = 0;
2875 printf (" LOC CFA ");
2877 for (r = 0; r < *max_regs; r++)
2878 if (fc->col_type[r] != DW_CFA_unreferenced)
2883 printf ("r%-4d", r);
2889 printf ("%08lx ", fc->pc_begin);
2891 strcpy (tmp, "exp");
2893 sprintf (tmp, "r%d%+d", fc->cfa_reg, fc->cfa_offset);
2894 printf ("%-8s ", tmp);
2896 for (r = 0; r < fc->ncols; r++)
2898 if (fc->col_type[r] != DW_CFA_unreferenced)
2900 switch (fc->col_type[r])
2902 case DW_CFA_undefined:
2905 case DW_CFA_same_value:
2909 sprintf (tmp, "c%+d", fc->col_offset[r]);
2911 case DW_CFA_val_offset:
2912 sprintf (tmp, "v%+d", fc->col_offset[r]);
2914 case DW_CFA_register:
2915 sprintf (tmp, "r%d", fc->col_offset[r]);
2917 case DW_CFA_expression:
2918 strcpy (tmp, "exp");
2920 case DW_CFA_val_expression:
2921 strcpy (tmp, "vexp");
2924 strcpy (tmp, "n/a");
2927 printf ("%-5s", tmp);
2934 size_of_encoded_value (int encoding)
2936 switch (encoding & 0x7)
2939 case 0: return eh_addr_size;
2947 get_encoded_value (unsigned char *data, int encoding)
2949 int size = size_of_encoded_value (encoding);
2951 if (encoding & DW_EH_PE_signed)
2952 return byte_get_signed (data, size);
2954 return byte_get (data, size);
2957 #define GET(N) byte_get (start, N); start += N
2958 #define LEB() read_leb128 (start, & length_return, 0); start += length_return
2959 #define SLEB() read_leb128 (start, & length_return, 1); start += length_return
2962 display_debug_frames (struct dwarf_section *section,
2963 void *file ATTRIBUTE_UNUSED)
2965 unsigned char *start = section->start;
2966 unsigned char *end = start + section->size;
2967 unsigned char *section_start = start;
2968 Frame_Chunk *chunks = 0;
2969 Frame_Chunk *remembered_state = 0;
2971 int is_eh = strcmp (section->name, ".eh_frame") == 0;
2972 unsigned int length_return;
2975 printf (_("The section %s contains:\n"), section->name);
2979 unsigned char *saved_start;
2980 unsigned char *block_end;
2981 unsigned long length;
2982 unsigned long cie_id;
2985 int need_col_headers = 1;
2986 unsigned char *augmentation_data = NULL;
2987 unsigned long augmentation_data_len = 0;
2988 int encoded_ptr_size = eh_addr_size;
2990 int initial_length_size;
2992 saved_start = start;
2993 length = byte_get (start, 4); start += 4;
2997 printf ("\n%08lx ZERO terminator\n\n",
2998 (unsigned long)(saved_start - section_start));
3002 if (length == 0xffffffff)
3004 length = byte_get (start, 8);
3007 initial_length_size = 12;
3012 initial_length_size = 4;
3015 block_end = saved_start + length + initial_length_size;
3016 if (block_end > end)
3018 warn ("Invalid length %#08lx in FDE at %#08lx\n",
3019 length, (unsigned long)(saved_start - section_start));
3022 cie_id = byte_get (start, offset_size); start += offset_size;
3024 if (is_eh ? (cie_id == 0) : (cie_id == DW_CIE_ID))
3028 fc = xmalloc (sizeof (Frame_Chunk));
3029 memset (fc, 0, sizeof (Frame_Chunk));
3033 fc->chunk_start = saved_start;
3035 fc->col_type = xmalloc (sizeof (short int));
3036 fc->col_offset = xmalloc (sizeof (int));
3037 frame_need_space (fc, max_regs-1);
3041 fc->augmentation = (char *) start;
3042 start = (unsigned char *) strchr ((char *) start, '\0') + 1;
3044 if (fc->augmentation[0] == 'z')
3046 fc->code_factor = LEB ();
3047 fc->data_factor = SLEB ();
3056 augmentation_data_len = LEB ();
3057 augmentation_data = start;
3058 start += augmentation_data_len;
3060 else if (strcmp (fc->augmentation, "eh") == 0)
3062 start += eh_addr_size;
3063 fc->code_factor = LEB ();
3064 fc->data_factor = SLEB ();
3076 fc->code_factor = LEB ();
3077 fc->data_factor = SLEB ();
3089 if (do_debug_frames_interp)
3090 printf ("\n%08lx %08lx %08lx CIE \"%s\" cf=%d df=%d ra=%d\n",
3091 (unsigned long)(saved_start - section_start), length, cie_id,
3092 fc->augmentation, fc->code_factor, fc->data_factor,
3096 printf ("\n%08lx %08lx %08lx CIE\n",
3097 (unsigned long)(saved_start - section_start), length, cie_id);
3098 printf (" Version: %d\n", version);
3099 printf (" Augmentation: \"%s\"\n", fc->augmentation);
3100 printf (" Code alignment factor: %u\n", fc->code_factor);
3101 printf (" Data alignment factor: %d\n", fc->data_factor);
3102 printf (" Return address column: %d\n", fc->ra);
3104 if (augmentation_data_len)
3107 printf (" Augmentation data: ");
3108 for (i = 0; i < augmentation_data_len; ++i)
3109 printf (" %02x", augmentation_data[i]);
3115 if (augmentation_data_len)
3117 unsigned char *p, *q;
3118 p = (unsigned char *) fc->augmentation + 1;
3119 q = augmentation_data;
3126 q += 1 + size_of_encoded_value (*q);
3128 fc->fde_encoding = *q++;
3134 if (fc->fde_encoding)
3135 encoded_ptr_size = size_of_encoded_value (fc->fde_encoding);
3138 frame_need_space (fc, fc->ra);
3142 unsigned char *look_for;
3143 static Frame_Chunk fde_fc;
3146 memset (fc, 0, sizeof (Frame_Chunk));
3148 look_for = is_eh ? start - 4 - cie_id : section_start + cie_id;
3150 for (cie = chunks; cie ; cie = cie->next)
3151 if (cie->chunk_start == look_for)
3156 warn ("Invalid CIE pointer %#08lx in FDE at %#08lx\n",
3157 cie_id, (unsigned long)(saved_start - section_start));
3159 fc->col_type = xmalloc (sizeof (short int));
3160 fc->col_offset = xmalloc (sizeof (int));
3161 frame_need_space (fc, max_regs - 1);
3163 fc->augmentation = "";
3164 fc->fde_encoding = 0;
3168 fc->ncols = cie->ncols;
3169 fc->col_type = xcmalloc (fc->ncols, sizeof (short int));
3170 fc->col_offset = xcmalloc (fc->ncols, sizeof (int));
3171 memcpy (fc->col_type, cie->col_type, fc->ncols * sizeof (short int));
3172 memcpy (fc->col_offset, cie->col_offset, fc->ncols * sizeof (int));
3173 fc->augmentation = cie->augmentation;
3174 fc->code_factor = cie->code_factor;
3175 fc->data_factor = cie->data_factor;
3176 fc->cfa_reg = cie->cfa_reg;
3177 fc->cfa_offset = cie->cfa_offset;
3179 frame_need_space (fc, max_regs-1);
3180 fc->fde_encoding = cie->fde_encoding;
3183 if (fc->fde_encoding)
3184 encoded_ptr_size = size_of_encoded_value (fc->fde_encoding);
3186 fc->pc_begin = get_encoded_value (start, fc->fde_encoding);
3187 if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel
3188 /* Don't adjust for relocatable file since there's
3189 invariably a pcrel reloc here, which we haven't
3192 fc->pc_begin += section->address + (start - section_start);
3193 start += encoded_ptr_size;
3194 fc->pc_range = byte_get (start, encoded_ptr_size);
3195 start += encoded_ptr_size;
3197 if (cie->augmentation[0] == 'z')
3199 augmentation_data_len = LEB ();
3200 augmentation_data = start;
3201 start += augmentation_data_len;
3204 printf ("\n%08lx %08lx %08lx FDE cie=%08lx pc=%08lx..%08lx\n",
3205 (unsigned long)(saved_start - section_start), length, cie_id,
3206 (unsigned long)(cie->chunk_start - section_start),
3207 fc->pc_begin, fc->pc_begin + fc->pc_range);
3208 if (! do_debug_frames_interp && augmentation_data_len)
3212 printf (" Augmentation data: ");
3213 for (i = 0; i < augmentation_data_len; ++i)
3214 printf (" %02x", augmentation_data[i]);
3220 /* At this point, fc is the current chunk, cie (if any) is set, and
3221 we're about to interpret instructions for the chunk. */
3222 /* ??? At present we need to do this always, since this sizes the
3223 fc->col_type and fc->col_offset arrays, which we write into always.
3224 We should probably split the interpreted and non-interpreted bits
3225 into two different routines, since there's so much that doesn't
3226 really overlap between them. */
3227 if (1 || do_debug_frames_interp)
3229 /* Start by making a pass over the chunk, allocating storage
3230 and taking note of what registers are used. */
3231 unsigned char *tmp = start;
3233 while (start < block_end)
3236 unsigned long reg, tmp;
3243 /* Warning: if you add any more cases to this switch, be
3244 sure to add them to the corresponding switch below. */
3247 case DW_CFA_advance_loc:
3251 frame_need_space (fc, opa);
3252 fc->col_type[opa] = DW_CFA_undefined;
3254 case DW_CFA_restore:
3255 frame_need_space (fc, opa);
3256 fc->col_type[opa] = DW_CFA_undefined;
3258 case DW_CFA_set_loc:
3259 start += encoded_ptr_size;
3261 case DW_CFA_advance_loc1:
3264 case DW_CFA_advance_loc2:
3267 case DW_CFA_advance_loc4:
3270 case DW_CFA_offset_extended:
3271 case DW_CFA_val_offset:
3272 reg = LEB (); LEB ();
3273 frame_need_space (fc, reg);
3274 fc->col_type[reg] = DW_CFA_undefined;
3276 case DW_CFA_restore_extended:
3278 frame_need_space (fc, reg);
3279 fc->col_type[reg] = DW_CFA_undefined;
3281 case DW_CFA_undefined:
3283 frame_need_space (fc, reg);
3284 fc->col_type[reg] = DW_CFA_undefined;
3286 case DW_CFA_same_value:
3288 frame_need_space (fc, reg);
3289 fc->col_type[reg] = DW_CFA_undefined;
3291 case DW_CFA_register:
3292 reg = LEB (); LEB ();
3293 frame_need_space (fc, reg);
3294 fc->col_type[reg] = DW_CFA_undefined;
3296 case DW_CFA_def_cfa:
3299 case DW_CFA_def_cfa_register:
3302 case DW_CFA_def_cfa_offset:
3305 case DW_CFA_def_cfa_expression:
3309 case DW_CFA_expression:
3310 case DW_CFA_val_expression:
3314 frame_need_space (fc, reg);
3315 fc->col_type[reg] = DW_CFA_undefined;
3317 case DW_CFA_offset_extended_sf:
3318 case DW_CFA_val_offset_sf:
3319 reg = LEB (); SLEB ();
3320 frame_need_space (fc, reg);
3321 fc->col_type[reg] = DW_CFA_undefined;
3323 case DW_CFA_def_cfa_sf:
3326 case DW_CFA_def_cfa_offset_sf:
3329 case DW_CFA_MIPS_advance_loc8:
3332 case DW_CFA_GNU_args_size:
3335 case DW_CFA_GNU_negative_offset_extended:
3336 reg = LEB (); LEB ();
3337 frame_need_space (fc, reg);
3338 fc->col_type[reg] = DW_CFA_undefined;
3347 /* Now we know what registers are used, make a second pass over
3348 the chunk, this time actually printing out the info. */
3350 while (start < block_end)
3353 unsigned long ul, reg, roffs;
3362 /* Warning: if you add any more cases to this switch, be
3363 sure to add them to the corresponding switch above. */
3366 case DW_CFA_advance_loc:
3367 if (do_debug_frames_interp)
3368 frame_display_row (fc, &need_col_headers, &max_regs);
3370 printf (" DW_CFA_advance_loc: %d to %08lx\n",
3371 opa * fc->code_factor,
3372 fc->pc_begin + opa * fc->code_factor);
3373 fc->pc_begin += opa * fc->code_factor;
3378 if (! do_debug_frames_interp)
3379 printf (" DW_CFA_offset: r%d at cfa%+ld\n",
3380 opa, roffs * fc->data_factor);
3381 fc->col_type[opa] = DW_CFA_offset;
3382 fc->col_offset[opa] = roffs * fc->data_factor;
3385 case DW_CFA_restore:
3386 if (! do_debug_frames_interp)
3387 printf (" DW_CFA_restore: r%d\n", opa);
3388 fc->col_type[opa] = cie->col_type[opa];
3389 fc->col_offset[opa] = cie->col_offset[opa];
3392 case DW_CFA_set_loc:
3393 vma = get_encoded_value (start, fc->fde_encoding);
3394 if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel
3396 vma += section->address + (start - section_start);
3397 start += encoded_ptr_size;
3398 if (do_debug_frames_interp)
3399 frame_display_row (fc, &need_col_headers, &max_regs);
3401 printf (" DW_CFA_set_loc: %08lx\n", (unsigned long)vma);
3405 case DW_CFA_advance_loc1:
3406 ofs = byte_get (start, 1); start += 1;
3407 if (do_debug_frames_interp)
3408 frame_display_row (fc, &need_col_headers, &max_regs);
3410 printf (" DW_CFA_advance_loc1: %ld to %08lx\n",
3411 ofs * fc->code_factor,
3412 fc->pc_begin + ofs * fc->code_factor);
3413 fc->pc_begin += ofs * fc->code_factor;
3416 case DW_CFA_advance_loc2:
3417 ofs = byte_get (start, 2); start += 2;
3418 if (do_debug_frames_interp)
3419 frame_display_row (fc, &need_col_headers, &max_regs);
3421 printf (" DW_CFA_advance_loc2: %ld to %08lx\n",
3422 ofs * fc->code_factor,
3423 fc->pc_begin + ofs * fc->code_factor);
3424 fc->pc_begin += ofs * fc->code_factor;
3427 case DW_CFA_advance_loc4:
3428 ofs = byte_get (start, 4); start += 4;
3429 if (do_debug_frames_interp)
3430 frame_display_row (fc, &need_col_headers, &max_regs);
3432 printf (" DW_CFA_advance_loc4: %ld to %08lx\n",
3433 ofs * fc->code_factor,
3434 fc->pc_begin + ofs * fc->code_factor);
3435 fc->pc_begin += ofs * fc->code_factor;
3438 case DW_CFA_offset_extended:
3441 if (! do_debug_frames_interp)
3442 printf (" DW_CFA_offset_extended: r%ld at cfa%+ld\n",
3443 reg, roffs * fc->data_factor);
3444 fc->col_type[reg] = DW_CFA_offset;
3445 fc->col_offset[reg] = roffs * fc->data_factor;
3448 case DW_CFA_val_offset:
3451 if (! do_debug_frames_interp)
3452 printf (" DW_CFA_val_offset: r%ld at cfa%+ld\n",
3453 reg, roffs * fc->data_factor);
3454 fc->col_type[reg] = DW_CFA_val_offset;
3455 fc->col_offset[reg] = roffs * fc->data_factor;
3458 case DW_CFA_restore_extended:
3460 if (! do_debug_frames_interp)
3461 printf (" DW_CFA_restore_extended: r%ld\n", reg);
3462 fc->col_type[reg] = cie->col_type[reg];
3463 fc->col_offset[reg] = cie->col_offset[reg];
3466 case DW_CFA_undefined:
3468 if (! do_debug_frames_interp)
3469 printf (" DW_CFA_undefined: r%ld\n", reg);
3470 fc->col_type[reg] = DW_CFA_undefined;
3471 fc->col_offset[reg] = 0;
3474 case DW_CFA_same_value:
3476 if (! do_debug_frames_interp)
3477 printf (" DW_CFA_same_value: r%ld\n", reg);
3478 fc->col_type[reg] = DW_CFA_same_value;
3479 fc->col_offset[reg] = 0;
3482 case DW_CFA_register:
3485 if (! do_debug_frames_interp)
3486 printf (" DW_CFA_register: r%ld in r%ld\n", reg, roffs);
3487 fc->col_type[reg] = DW_CFA_register;
3488 fc->col_offset[reg] = roffs;
3491 case DW_CFA_remember_state:
3492 if (! do_debug_frames_interp)
3493 printf (" DW_CFA_remember_state\n");
3494 rs = xmalloc (sizeof (Frame_Chunk));
3495 rs->ncols = fc->ncols;
3496 rs->col_type = xcmalloc (rs->ncols, sizeof (short int));
3497 rs->col_offset = xcmalloc (rs->ncols, sizeof (int));
3498 memcpy (rs->col_type, fc->col_type, rs->ncols);
3499 memcpy (rs->col_offset, fc->col_offset, rs->ncols * sizeof (int));
3500 rs->next = remembered_state;
3501 remembered_state = rs;
3504 case DW_CFA_restore_state:
3505 if (! do_debug_frames_interp)
3506 printf (" DW_CFA_restore_state\n");
3507 rs = remembered_state;
3510 remembered_state = rs->next;
3511 frame_need_space (fc, rs->ncols-1);
3512 memcpy (fc->col_type, rs->col_type, rs->ncols);
3513 memcpy (fc->col_offset, rs->col_offset,
3514 rs->ncols * sizeof (int));
3515 free (rs->col_type);
3516 free (rs->col_offset);
3519 else if (do_debug_frames_interp)
3520 printf ("Mismatched DW_CFA_restore_state\n");
3523 case DW_CFA_def_cfa:
3524 fc->cfa_reg = LEB ();
3525 fc->cfa_offset = LEB ();
3527 if (! do_debug_frames_interp)
3528 printf (" DW_CFA_def_cfa: r%d ofs %d\n",
3529 fc->cfa_reg, fc->cfa_offset);
3532 case DW_CFA_def_cfa_register:
3533 fc->cfa_reg = LEB ();
3535 if (! do_debug_frames_interp)
3536 printf (" DW_CFA_def_cfa_reg: r%d\n", fc->cfa_reg);
3539 case DW_CFA_def_cfa_offset:
3540 fc->cfa_offset = LEB ();
3541 if (! do_debug_frames_interp)
3542 printf (" DW_CFA_def_cfa_offset: %d\n", fc->cfa_offset);
3546 if (! do_debug_frames_interp)
3547 printf (" DW_CFA_nop\n");
3550 case DW_CFA_def_cfa_expression:
3552 if (! do_debug_frames_interp)
3554 printf (" DW_CFA_def_cfa_expression (");
3555 decode_location_expression (start, eh_addr_size, ul, 0);
3562 case DW_CFA_expression:
3565 if (! do_debug_frames_interp)
3567 printf (" DW_CFA_expression: r%ld (", reg);
3568 decode_location_expression (start, eh_addr_size, ul, 0);
3571 fc->col_type[reg] = DW_CFA_expression;
3575 case DW_CFA_val_expression:
3578 if (! do_debug_frames_interp)
3580 printf (" DW_CFA_val_expression: r%ld (", reg);
3581 decode_location_expression (start, eh_addr_size, ul, 0);
3584 fc->col_type[reg] = DW_CFA_val_expression;
3588 case DW_CFA_offset_extended_sf:
3591 frame_need_space (fc, reg);
3592 if (! do_debug_frames_interp)
3593 printf (" DW_CFA_offset_extended_sf: r%ld at cfa%+ld\n",
3594 reg, l * fc->data_factor);
3595 fc->col_type[reg] = DW_CFA_offset;
3596 fc->col_offset[reg] = l * fc->data_factor;
3599 case DW_CFA_val_offset_sf:
3602 frame_need_space (fc, reg);
3603 if (! do_debug_frames_interp)
3604 printf (" DW_CFA_val_offset_sf: r%ld at cfa%+ld\n",
3605 reg, l * fc->data_factor);
3606 fc->col_type[reg] = DW_CFA_val_offset;
3607 fc->col_offset[reg] = l * fc->data_factor;
3610 case DW_CFA_def_cfa_sf:
3611 fc->cfa_reg = LEB ();
3612 fc->cfa_offset = SLEB ();
3613 fc->cfa_offset = fc->cfa_offset * fc->data_factor;
3615 if (! do_debug_frames_interp)
3616 printf (" DW_CFA_def_cfa_sf: r%d ofs %d\n",
3617 fc->cfa_reg, fc->cfa_offset);
3620 case DW_CFA_def_cfa_offset_sf:
3621 fc->cfa_offset = SLEB ();
3622 fc->cfa_offset = fc->cfa_offset * fc->data_factor;
3623 if (! do_debug_frames_interp)
3624 printf (" DW_CFA_def_cfa_offset_sf: %d\n", fc->cfa_offset);
3627 case DW_CFA_MIPS_advance_loc8:
3628 ofs = byte_get (start, 8); start += 8;
3629 if (do_debug_frames_interp)
3630 frame_display_row (fc, &need_col_headers, &max_regs);
3632 printf (" DW_CFA_MIPS_advance_loc8: %ld to %08lx\n",
3633 ofs * fc->code_factor,
3634 fc->pc_begin + ofs * fc->code_factor);
3635 fc->pc_begin += ofs * fc->code_factor;
3638 case DW_CFA_GNU_window_save:
3639 if (! do_debug_frames_interp)
3640 printf (" DW_CFA_GNU_window_save\n");
3643 case DW_CFA_GNU_args_size:
3645 if (! do_debug_frames_interp)
3646 printf (" DW_CFA_GNU_args_size: %ld\n", ul);
3649 case DW_CFA_GNU_negative_offset_extended:
3652 frame_need_space (fc, reg);
3653 if (! do_debug_frames_interp)
3654 printf (" DW_CFA_GNU_negative_offset_extended: r%ld at cfa%+ld\n",
3655 reg, l * fc->data_factor);
3656 fc->col_type[reg] = DW_CFA_offset;
3657 fc->col_offset[reg] = l * fc->data_factor;
3661 if (op >= DW_CFA_lo_user && op <= DW_CFA_hi_user)
3662 printf (_(" DW_CFA_??? (User defined call frame op: %#x)\n"), op);
3664 warn (_("unsupported or unknown Dwarf Call Frame Instruction number: %#x\n"), op);
3669 if (do_debug_frames_interp)
3670 frame_display_row (fc, &need_col_headers, &max_regs);
3685 display_debug_not_supported (struct dwarf_section *section,
3686 void *file ATTRIBUTE_UNUSED)
3688 printf (_("Displaying the debug contents of section %s is not yet supported.\n"),
3695 cmalloc (size_t nmemb, size_t size)
3697 /* Check for overflow. */
3698 if (nmemb >= ~(size_t) 0 / size)
3701 return malloc (nmemb * size);
3705 xcmalloc (size_t nmemb, size_t size)
3707 /* Check for overflow. */
3708 if (nmemb >= ~(size_t) 0 / size)
3711 return xmalloc (nmemb * size);
3715 xcrealloc (void *ptr, size_t nmemb, size_t size)
3717 /* Check for overflow. */
3718 if (nmemb >= ~(size_t) 0 / size)
3721 return xrealloc (ptr, nmemb * size);
3725 error (const char *message, ...)
3729 va_start (args, message);
3730 fprintf (stderr, _("%s: Error: "), program_name);
3731 vfprintf (stderr, message, args);
3736 warn (const char *message, ...)
3740 va_start (args, message);
3741 fprintf (stderr, _("%s: Warning: "), program_name);
3742 vfprintf (stderr, message, args);
3747 free_debug_memory (void)
3749 enum dwarf_section_display_enum i;
3753 for (i = 0; i < max; i++)
3754 free_debug_section (i);
3756 if (debug_information)
3758 for (i = 0; i < num_debug_info_entries; i++)
3760 if (!debug_information [i].max_loc_offsets)
3762 free (debug_information [i].loc_offsets);
3763 free (debug_information [i].have_frame_base);
3765 if (!debug_information [i].max_range_lists)
3766 free (debug_information [i].range_lists);
3768 free (debug_information);
3769 debug_information = NULL;
3770 num_debug_info_entries = 0;
3775 struct dwarf_section_display debug_displays[] =
3777 { { ".debug_abbrev", NULL, 0, 0 },
3778 display_debug_abbrev, 0, 0 },
3779 { { ".debug_aranges", NULL, 0, 0 },
3780 display_debug_aranges, 0, 0 },
3781 { { ".debug_frame", NULL, 0, 0 },
3782 display_debug_frames, 1, 0 },
3783 { { ".debug_info", NULL, 0, 0 },
3784 display_debug_info, 1, 0 },
3785 { { ".debug_line", NULL, 0, 0 },
3786 display_debug_lines, 0, 0 },
3787 { { ".debug_pubnames", NULL, 0, 0 },
3788 display_debug_pubnames, 0, 0 },
3789 { { ".eh_frame", NULL, 0, 0 },
3790 display_debug_frames, 1, 1 },
3791 { { ".debug_macinfo", NULL, 0, 0 },
3792 display_debug_macinfo, 0, 0 },
3793 { { ".debug_str", NULL, 0, 0 },
3794 display_debug_str, 0, 0 },
3795 { { ".debug_loc", NULL, 0, 0 },
3796 display_debug_loc, 0, 0 },
3797 { { ".debug_pubtypes", NULL, 0, 0 },
3798 display_debug_pubnames, 0, 0 },
3799 { { ".debug_ranges", NULL, 0, 0 },
3800 display_debug_ranges, 0, 0 },
3801 { { ".debug_static_func", NULL, 0, 0 },
3802 display_debug_not_supported, 0, 0 },
3803 { { ".debug_static_vars", NULL, 0, 0 },
3804 display_debug_not_supported, 0, 0 },
3805 { { ".debug_types", NULL, 0, 0 },
3806 display_debug_not_supported, 0, 0 },
3807 { { ".debug_weaknames", NULL, 0, 0 },
3808 display_debug_not_supported, 0, 0 }