1 /* dwarf.c -- display DWARF contents of a BFD binary file
2 Copyright 2005, 2006, 2007, 2008, 2009, 2010
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/common.h"
30 static int have_frame_base;
31 static int need_base_address;
33 static unsigned int last_pointer_size = 0;
34 static int warned_about_missing_comp_units = FALSE;
36 static unsigned int num_debug_info_entries = 0;
37 static debug_info *debug_information = NULL;
38 /* Special value for num_debug_info_entries to indicate
39 that the .debug_info section could not be loaded/parsed. */
40 #define DEBUG_INFO_UNAVAILABLE (unsigned int) -1
47 int do_debug_pubnames;
48 int do_debug_pubtypes;
52 int do_debug_frames_interp;
58 /* Values for do_debug_lines. */
59 #define FLAG_DEBUG_LINES_RAW 1
60 #define FLAG_DEBUG_LINES_DECODED 2
62 dwarf_vma (*byte_get) (unsigned char *, int);
65 byte_get_little_endian (unsigned char *field, int size)
73 return ((unsigned int) (field[0]))
74 | (((unsigned int) (field[1])) << 8);
77 return ((unsigned long) (field[0]))
78 | (((unsigned long) (field[1])) << 8)
79 | (((unsigned long) (field[2])) << 16);
82 return ((unsigned long) (field[0]))
83 | (((unsigned long) (field[1])) << 8)
84 | (((unsigned long) (field[2])) << 16)
85 | (((unsigned long) (field[3])) << 24);
88 if (sizeof (dwarf_vma) == 8)
89 return ((dwarf_vma) (field[0]))
90 | (((dwarf_vma) (field[1])) << 8)
91 | (((dwarf_vma) (field[2])) << 16)
92 | (((dwarf_vma) (field[3])) << 24)
93 | (((dwarf_vma) (field[4])) << 32)
94 | (((dwarf_vma) (field[5])) << 40)
95 | (((dwarf_vma) (field[6])) << 48)
96 | (((dwarf_vma) (field[7])) << 56);
97 else if (sizeof (dwarf_vma) == 4)
98 /* We want to extract data from an 8 byte wide field and
99 place it into a 4 byte wide field. Since this is a little
100 endian source we can just use the 4 byte extraction code. */
101 return ((unsigned long) (field[0]))
102 | (((unsigned long) (field[1])) << 8)
103 | (((unsigned long) (field[2])) << 16)
104 | (((unsigned long) (field[3])) << 24);
107 error (_("Unhandled data length: %d\n"), size);
113 byte_get_big_endian (unsigned char *field, int size)
121 return ((unsigned int) (field[1])) | (((int) (field[0])) << 8);
124 return ((unsigned long) (field[2]))
125 | (((unsigned long) (field[1])) << 8)
126 | (((unsigned long) (field[0])) << 16);
129 return ((unsigned long) (field[3]))
130 | (((unsigned long) (field[2])) << 8)
131 | (((unsigned long) (field[1])) << 16)
132 | (((unsigned long) (field[0])) << 24);
135 if (sizeof (dwarf_vma) == 8)
136 return ((dwarf_vma) (field[7]))
137 | (((dwarf_vma) (field[6])) << 8)
138 | (((dwarf_vma) (field[5])) << 16)
139 | (((dwarf_vma) (field[4])) << 24)
140 | (((dwarf_vma) (field[3])) << 32)
141 | (((dwarf_vma) (field[2])) << 40)
142 | (((dwarf_vma) (field[1])) << 48)
143 | (((dwarf_vma) (field[0])) << 56);
144 else if (sizeof (dwarf_vma) == 4)
146 /* Although we are extracing data from an 8 byte wide field,
147 we are returning only 4 bytes of data. */
149 return ((unsigned long) (field[3]))
150 | (((unsigned long) (field[2])) << 8)
151 | (((unsigned long) (field[1])) << 16)
152 | (((unsigned long) (field[0])) << 24);
156 error (_("Unhandled data length: %d\n"), size);
162 byte_get_signed (unsigned char *field, int size)
164 dwarf_vma x = byte_get (field, size);
169 return (x ^ 0x80) - 0x80;
171 return (x ^ 0x8000) - 0x8000;
173 return (x ^ 0x80000000) - 0x80000000;
182 size_of_encoded_value (int encoding)
184 switch (encoding & 0x7)
187 case 0: return eh_addr_size;
195 get_encoded_value (unsigned char *data, int encoding)
197 int size = size_of_encoded_value (encoding);
199 if (encoding & DW_EH_PE_signed)
200 return byte_get_signed (data, size);
202 return byte_get (data, size);
205 /* Print a dwarf_vma value (typically an address, offset or length) in
206 hexadecimal format, followed by a space. The length of the value (and
207 hence the precision displayed) is determined by the byte_size parameter. */
210 print_dwarf_vma (dwarf_vma val, unsigned byte_size)
212 static char buff[18];
214 /* Printf does not have a way of specifiying a maximum field width for an
215 integer value, so we print the full value into a buffer and then select
216 the precision we need. */
217 #if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2)
219 snprintf (buff, sizeof (buff), "%16.16llx ", val);
221 snprintf (buff, sizeof (buff), "%016I64x ", val);
224 snprintf (buff, sizeof (buff), "%16.16lx ", val);
227 fputs (buff + (byte_size == 4 ? 8 : 0), stdout);
231 read_leb128 (unsigned char *data, unsigned int *length_return, int sign)
233 unsigned long int result = 0;
234 unsigned int num_read = 0;
235 unsigned int shift = 0;
243 result |= ((unsigned long int) (byte & 0x7f)) << shift;
250 if (length_return != NULL)
251 *length_return = num_read;
253 if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40))
254 result |= -1L << shift;
259 typedef struct State_Machine_Registers
261 unsigned long address;
267 unsigned char op_index;
268 unsigned char end_sequence;
269 /* This variable hold the number of the last entry seen
270 in the File Table. */
271 unsigned int last_file_entry;
274 static SMR state_machine_regs;
277 reset_state_machine (int is_stmt)
279 state_machine_regs.address = 0;
280 state_machine_regs.op_index = 0;
281 state_machine_regs.file = 1;
282 state_machine_regs.line = 1;
283 state_machine_regs.column = 0;
284 state_machine_regs.is_stmt = is_stmt;
285 state_machine_regs.basic_block = 0;
286 state_machine_regs.end_sequence = 0;
287 state_machine_regs.last_file_entry = 0;
290 /* Handled an extend line op.
291 Returns the number of bytes read. */
294 process_extended_line_op (unsigned char *data, int is_stmt)
296 unsigned char op_code;
297 unsigned int bytes_read;
302 len = read_leb128 (data, & bytes_read, 0);
307 warn (_("badly formed extended line op encountered!\n"));
314 printf (_(" Extended opcode %d: "), op_code);
318 case DW_LNE_end_sequence:
319 printf (_("End of Sequence\n\n"));
320 reset_state_machine (is_stmt);
323 case DW_LNE_set_address:
324 adr = byte_get (data, len - bytes_read - 1);
325 printf (_("set Address to 0x%lx\n"), adr);
326 state_machine_regs.address = adr;
327 state_machine_regs.op_index = 0;
330 case DW_LNE_define_file:
331 printf (_(" define new File Table entry\n"));
332 printf (_(" Entry\tDir\tTime\tSize\tName\n"));
334 printf (_(" %d\t"), ++state_machine_regs.last_file_entry);
336 data += strlen ((char *) data) + 1;
337 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
339 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
341 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
342 printf (_("%s\n\n"), name);
345 case DW_LNE_set_discriminator:
346 printf (_("set Discriminator to %lu\n"),
347 read_leb128 (data, & bytes_read, 0));
351 case DW_LNE_HP_negate_is_UV_update:
352 printf ("DW_LNE_HP_negate_is_UV_update\n");
354 case DW_LNE_HP_push_context:
355 printf ("DW_LNE_HP_push_context\n");
357 case DW_LNE_HP_pop_context:
358 printf ("DW_LNE_HP_pop_context\n");
360 case DW_LNE_HP_set_file_line_column:
361 printf ("DW_LNE_HP_set_file_line_column\n");
363 case DW_LNE_HP_set_routine_name:
364 printf ("DW_LNE_HP_set_routine_name\n");
366 case DW_LNE_HP_set_sequence:
367 printf ("DW_LNE_HP_set_sequence\n");
369 case DW_LNE_HP_negate_post_semantics:
370 printf ("DW_LNE_HP_negate_post_semantics\n");
372 case DW_LNE_HP_negate_function_exit:
373 printf ("DW_LNE_HP_negate_function_exit\n");
375 case DW_LNE_HP_negate_front_end_logical:
376 printf ("DW_LNE_HP_negate_front_end_logical\n");
378 case DW_LNE_HP_define_proc:
379 printf ("DW_LNE_HP_define_proc\n");
383 if (op_code >= DW_LNE_lo_user
384 /* The test against DW_LNW_hi_user is redundant due to
385 the limited range of the unsigned char data type used
387 /*&& op_code <= DW_LNE_hi_user*/)
388 printf (_("user defined: length %d\n"), len - bytes_read);
390 printf (_("UNKNOWN: length %d\n"), len - bytes_read);
398 fetch_indirect_string (unsigned long offset)
400 struct dwarf_section *section = &debug_displays [str].section;
402 if (section->start == NULL)
403 return _("<no .debug_str section>");
405 /* DWARF sections under Mach-O have non-zero addresses. */
406 offset -= section->address;
407 if (offset > section->size)
409 warn (_("DW_FORM_strp offset too big: %lx\n"), offset);
410 return _("<offset is too big>");
413 return (const char *) section->start + offset;
416 /* FIXME: There are better and more efficient ways to handle
417 these structures. For now though, I just want something that
418 is simple to implement. */
419 typedef struct abbrev_attr
421 unsigned long attribute;
423 struct abbrev_attr *next;
427 typedef struct abbrev_entry
432 struct abbrev_attr *first_attr;
433 struct abbrev_attr *last_attr;
434 struct abbrev_entry *next;
438 static abbrev_entry *first_abbrev = NULL;
439 static abbrev_entry *last_abbrev = NULL;
446 for (abbrv = first_abbrev; abbrv;)
448 abbrev_entry *next_abbrev = abbrv->next;
451 for (attr = abbrv->first_attr; attr;)
453 abbrev_attr *next_attr = attr->next;
463 last_abbrev = first_abbrev = NULL;
467 add_abbrev (unsigned long number, unsigned long tag, int children)
471 entry = (abbrev_entry *) malloc (sizeof (*entry));
477 entry->entry = number;
479 entry->children = children;
480 entry->first_attr = NULL;
481 entry->last_attr = NULL;
484 if (first_abbrev == NULL)
485 first_abbrev = entry;
487 last_abbrev->next = entry;
493 add_abbrev_attr (unsigned long attribute, unsigned long form)
497 attr = (abbrev_attr *) malloc (sizeof (*attr));
503 attr->attribute = attribute;
507 if (last_abbrev->first_attr == NULL)
508 last_abbrev->first_attr = attr;
510 last_abbrev->last_attr->next = attr;
512 last_abbrev->last_attr = attr;
515 /* Processes the (partial) contents of a .debug_abbrev section.
516 Returns NULL if the end of the section was encountered.
517 Returns the address after the last byte read if the end of
518 an abbreviation set was found. */
520 static unsigned char *
521 process_abbrev_section (unsigned char *start, unsigned char *end)
523 if (first_abbrev != NULL)
528 unsigned int bytes_read;
531 unsigned long attribute;
534 entry = read_leb128 (start, & bytes_read, 0);
537 /* A single zero is supposed to end the section according
538 to the standard. If there's more, then signal that to
541 return start == end ? NULL : start;
543 tag = read_leb128 (start, & bytes_read, 0);
548 add_abbrev (entry, tag, children);
554 attribute = read_leb128 (start, & bytes_read, 0);
557 form = read_leb128 (start, & bytes_read, 0);
561 add_abbrev_attr (attribute, form);
563 while (attribute != 0);
570 get_TAG_name (unsigned long tag)
574 case DW_TAG_padding: return "DW_TAG_padding";
575 case DW_TAG_array_type: return "DW_TAG_array_type";
576 case DW_TAG_class_type: return "DW_TAG_class_type";
577 case DW_TAG_entry_point: return "DW_TAG_entry_point";
578 case DW_TAG_enumeration_type: return "DW_TAG_enumeration_type";
579 case DW_TAG_formal_parameter: return "DW_TAG_formal_parameter";
580 case DW_TAG_imported_declaration: return "DW_TAG_imported_declaration";
581 case DW_TAG_label: return "DW_TAG_label";
582 case DW_TAG_lexical_block: return "DW_TAG_lexical_block";
583 case DW_TAG_member: return "DW_TAG_member";
584 case DW_TAG_pointer_type: return "DW_TAG_pointer_type";
585 case DW_TAG_reference_type: return "DW_TAG_reference_type";
586 case DW_TAG_compile_unit: return "DW_TAG_compile_unit";
587 case DW_TAG_string_type: return "DW_TAG_string_type";
588 case DW_TAG_structure_type: return "DW_TAG_structure_type";
589 case DW_TAG_subroutine_type: return "DW_TAG_subroutine_type";
590 case DW_TAG_typedef: return "DW_TAG_typedef";
591 case DW_TAG_union_type: return "DW_TAG_union_type";
592 case DW_TAG_unspecified_parameters: return "DW_TAG_unspecified_parameters";
593 case DW_TAG_variant: return "DW_TAG_variant";
594 case DW_TAG_common_block: return "DW_TAG_common_block";
595 case DW_TAG_common_inclusion: return "DW_TAG_common_inclusion";
596 case DW_TAG_inheritance: return "DW_TAG_inheritance";
597 case DW_TAG_inlined_subroutine: return "DW_TAG_inlined_subroutine";
598 case DW_TAG_module: return "DW_TAG_module";
599 case DW_TAG_ptr_to_member_type: return "DW_TAG_ptr_to_member_type";
600 case DW_TAG_set_type: return "DW_TAG_set_type";
601 case DW_TAG_subrange_type: return "DW_TAG_subrange_type";
602 case DW_TAG_with_stmt: return "DW_TAG_with_stmt";
603 case DW_TAG_access_declaration: return "DW_TAG_access_declaration";
604 case DW_TAG_base_type: return "DW_TAG_base_type";
605 case DW_TAG_catch_block: return "DW_TAG_catch_block";
606 case DW_TAG_const_type: return "DW_TAG_const_type";
607 case DW_TAG_constant: return "DW_TAG_constant";
608 case DW_TAG_enumerator: return "DW_TAG_enumerator";
609 case DW_TAG_file_type: return "DW_TAG_file_type";
610 case DW_TAG_friend: return "DW_TAG_friend";
611 case DW_TAG_namelist: return "DW_TAG_namelist";
612 case DW_TAG_namelist_item: return "DW_TAG_namelist_item";
613 case DW_TAG_packed_type: return "DW_TAG_packed_type";
614 case DW_TAG_subprogram: return "DW_TAG_subprogram";
615 case DW_TAG_template_type_param: return "DW_TAG_template_type_param";
616 case DW_TAG_template_value_param: return "DW_TAG_template_value_param";
617 case DW_TAG_thrown_type: return "DW_TAG_thrown_type";
618 case DW_TAG_try_block: return "DW_TAG_try_block";
619 case DW_TAG_variant_part: return "DW_TAG_variant_part";
620 case DW_TAG_variable: return "DW_TAG_variable";
621 case DW_TAG_volatile_type: return "DW_TAG_volatile_type";
622 case DW_TAG_MIPS_loop: return "DW_TAG_MIPS_loop";
623 case DW_TAG_format_label: return "DW_TAG_format_label";
624 case DW_TAG_function_template: return "DW_TAG_function_template";
625 case DW_TAG_class_template: return "DW_TAG_class_template";
626 /* DWARF 2.1 values. */
627 case DW_TAG_dwarf_procedure: return "DW_TAG_dwarf_procedure";
628 case DW_TAG_restrict_type: return "DW_TAG_restrict_type";
629 case DW_TAG_interface_type: return "DW_TAG_interface_type";
630 case DW_TAG_namespace: return "DW_TAG_namespace";
631 case DW_TAG_imported_module: return "DW_TAG_imported_module";
632 case DW_TAG_unspecified_type: return "DW_TAG_unspecified_type";
633 case DW_TAG_partial_unit: return "DW_TAG_partial_unit";
634 case DW_TAG_imported_unit: return "DW_TAG_imported_unit";
635 case DW_TAG_condition: return "DW_TAG_condition";
636 case DW_TAG_shared_type: return "DW_TAG_shared_type";
637 /* DWARF 4 values. */
638 case DW_TAG_type_unit: return "DW_TAG_type_unit";
639 case DW_TAG_rvalue_reference_type: return "DW_TAG_rvalue_reference_type";
640 case DW_TAG_template_alias: return "DW_TAG_template_alias";
642 case DW_TAG_upc_shared_type: return "DW_TAG_upc_shared_type";
643 case DW_TAG_upc_strict_type: return "DW_TAG_upc_strict_type";
644 case DW_TAG_upc_relaxed_type: return "DW_TAG_upc_relaxed_type";
647 static char buffer[100];
649 snprintf (buffer, sizeof (buffer), _("Unknown TAG value: %lx"), tag);
656 get_FORM_name (unsigned long form)
660 case DW_FORM_addr: return "DW_FORM_addr";
661 case DW_FORM_block2: return "DW_FORM_block2";
662 case DW_FORM_block4: return "DW_FORM_block4";
663 case DW_FORM_data2: return "DW_FORM_data2";
664 case DW_FORM_data4: return "DW_FORM_data4";
665 case DW_FORM_data8: return "DW_FORM_data8";
666 case DW_FORM_string: return "DW_FORM_string";
667 case DW_FORM_block: return "DW_FORM_block";
668 case DW_FORM_block1: return "DW_FORM_block1";
669 case DW_FORM_data1: return "DW_FORM_data1";
670 case DW_FORM_flag: return "DW_FORM_flag";
671 case DW_FORM_sdata: return "DW_FORM_sdata";
672 case DW_FORM_strp: return "DW_FORM_strp";
673 case DW_FORM_udata: return "DW_FORM_udata";
674 case DW_FORM_ref_addr: return "DW_FORM_ref_addr";
675 case DW_FORM_ref1: return "DW_FORM_ref1";
676 case DW_FORM_ref2: return "DW_FORM_ref2";
677 case DW_FORM_ref4: return "DW_FORM_ref4";
678 case DW_FORM_ref8: return "DW_FORM_ref8";
679 case DW_FORM_ref_udata: return "DW_FORM_ref_udata";
680 case DW_FORM_indirect: return "DW_FORM_indirect";
681 /* DWARF 4 values. */
682 case DW_FORM_sec_offset: return "DW_FORM_sec_offset";
683 case DW_FORM_exprloc: return "DW_FORM_exprloc";
684 case DW_FORM_flag_present: return "DW_FORM_flag_present";
685 case DW_FORM_ref_sig8: return "DW_FORM_ref_sig8";
688 static char buffer[100];
690 snprintf (buffer, sizeof (buffer), _("Unknown FORM value: %lx"), form);
696 static unsigned char *
697 display_block (unsigned char *data, unsigned long length)
699 printf (_(" %lu byte block: "), length);
702 printf ("%lx ", (unsigned long) byte_get (data++, 1));
708 decode_location_expression (unsigned char * data,
709 unsigned int pointer_size,
710 unsigned long length,
711 unsigned long cu_offset,
712 struct dwarf_section * section)
715 unsigned int bytes_read;
716 unsigned long uvalue;
717 unsigned char *end = data + length;
718 int need_frame_base = 0;
727 printf ("DW_OP_addr: %lx",
728 (unsigned long) byte_get (data, pointer_size));
729 data += pointer_size;
732 printf ("DW_OP_deref");
735 printf ("DW_OP_const1u: %lu", (unsigned long) byte_get (data++, 1));
738 printf ("DW_OP_const1s: %ld", (long) byte_get_signed (data++, 1));
741 printf ("DW_OP_const2u: %lu", (unsigned long) byte_get (data, 2));
745 printf ("DW_OP_const2s: %ld", (long) byte_get_signed (data, 2));
749 printf ("DW_OP_const4u: %lu", (unsigned long) byte_get (data, 4));
753 printf ("DW_OP_const4s: %ld", (long) byte_get_signed (data, 4));
757 printf ("DW_OP_const8u: %lu %lu", (unsigned long) byte_get (data, 4),
758 (unsigned long) byte_get (data + 4, 4));
762 printf ("DW_OP_const8s: %ld %ld", (long) byte_get (data, 4),
763 (long) byte_get (data + 4, 4));
767 printf ("DW_OP_constu: %lu", read_leb128 (data, &bytes_read, 0));
771 printf ("DW_OP_consts: %ld", read_leb128 (data, &bytes_read, 1));
775 printf ("DW_OP_dup");
778 printf ("DW_OP_drop");
781 printf ("DW_OP_over");
784 printf ("DW_OP_pick: %ld", (unsigned long) byte_get (data++, 1));
787 printf ("DW_OP_swap");
790 printf ("DW_OP_rot");
793 printf ("DW_OP_xderef");
796 printf ("DW_OP_abs");
799 printf ("DW_OP_and");
802 printf ("DW_OP_div");
805 printf ("DW_OP_minus");
808 printf ("DW_OP_mod");
811 printf ("DW_OP_mul");
814 printf ("DW_OP_neg");
817 printf ("DW_OP_not");
823 printf ("DW_OP_plus");
825 case DW_OP_plus_uconst:
826 printf ("DW_OP_plus_uconst: %lu",
827 read_leb128 (data, &bytes_read, 0));
831 printf ("DW_OP_shl");
834 printf ("DW_OP_shr");
837 printf ("DW_OP_shra");
840 printf ("DW_OP_xor");
843 printf ("DW_OP_bra: %ld", (long) byte_get_signed (data, 2));
865 printf ("DW_OP_skip: %ld", (long) byte_get_signed (data, 2));
901 printf ("DW_OP_lit%d", op - DW_OP_lit0);
936 printf ("DW_OP_reg%d", op - DW_OP_reg0);
971 printf ("DW_OP_breg%d: %ld", op - DW_OP_breg0,
972 read_leb128 (data, &bytes_read, 1));
977 printf ("DW_OP_regx: %lu", read_leb128 (data, &bytes_read, 0));
982 printf ("DW_OP_fbreg: %ld", read_leb128 (data, &bytes_read, 1));
986 uvalue = read_leb128 (data, &bytes_read, 0);
988 printf ("DW_OP_bregx: %lu %ld", uvalue,
989 read_leb128 (data, &bytes_read, 1));
993 printf ("DW_OP_piece: %lu", read_leb128 (data, &bytes_read, 0));
996 case DW_OP_deref_size:
997 printf ("DW_OP_deref_size: %ld", (long) byte_get (data++, 1));
999 case DW_OP_xderef_size:
1000 printf ("DW_OP_xderef_size: %ld", (long) byte_get (data++, 1));
1003 printf ("DW_OP_nop");
1006 /* DWARF 3 extensions. */
1007 case DW_OP_push_object_address:
1008 printf ("DW_OP_push_object_address");
1011 /* XXX: Strictly speaking for 64-bit DWARF3 files
1012 this ought to be an 8-byte wide computation. */
1013 printf ("DW_OP_call2: <%lx>", (long) byte_get (data, 2) + cu_offset);
1017 /* XXX: Strictly speaking for 64-bit DWARF3 files
1018 this ought to be an 8-byte wide computation. */
1019 printf ("DW_OP_call4: <%lx>", (long) byte_get (data, 4) + cu_offset);
1022 case DW_OP_call_ref:
1023 /* XXX: Strictly speaking for 64-bit DWARF3 files
1024 this ought to be an 8-byte wide computation. */
1025 printf ("DW_OP_call_ref: <%lx>", (long) byte_get (data, 4) + cu_offset);
1028 case DW_OP_form_tls_address:
1029 printf ("DW_OP_form_tls_address");
1031 case DW_OP_call_frame_cfa:
1032 printf ("DW_OP_call_frame_cfa");
1034 case DW_OP_bit_piece:
1035 printf ("DW_OP_bit_piece: ");
1036 printf ("size: %lu ", read_leb128 (data, &bytes_read, 0));
1038 printf ("offset: %lu ", read_leb128 (data, &bytes_read, 0));
1042 /* DWARF 4 extensions. */
1043 case DW_OP_stack_value:
1044 printf ("DW_OP_stack_value");
1047 case DW_OP_implicit_value:
1048 printf ("DW_OP_implicit_value");
1049 uvalue = read_leb128 (data, &bytes_read, 0);
1051 display_block (data, uvalue);
1055 /* GNU extensions. */
1056 case DW_OP_GNU_push_tls_address:
1057 printf ("DW_OP_GNU_push_tls_address or DW_OP_HP_unknown");
1059 case DW_OP_GNU_uninit:
1060 printf ("DW_OP_GNU_uninit");
1061 /* FIXME: Is there data associated with this OP ? */
1063 case DW_OP_GNU_encoded_addr:
1069 addr = get_encoded_value (data, encoding);
1070 if ((encoding & 0x70) == DW_EH_PE_pcrel)
1071 addr += section->address + (data - section->start);
1072 data += size_of_encoded_value (encoding);
1074 printf ("DW_OP_GNU_encoded_addr: fmt:%02x addr:", encoding);
1075 print_dwarf_vma (addr, pointer_size);
1079 /* HP extensions. */
1080 case DW_OP_HP_is_value:
1081 printf ("DW_OP_HP_is_value");
1082 /* FIXME: Is there data associated with this OP ? */
1084 case DW_OP_HP_fltconst4:
1085 printf ("DW_OP_HP_fltconst4");
1086 /* FIXME: Is there data associated with this OP ? */
1088 case DW_OP_HP_fltconst8:
1089 printf ("DW_OP_HP_fltconst8");
1090 /* FIXME: Is there data associated with this OP ? */
1092 case DW_OP_HP_mod_range:
1093 printf ("DW_OP_HP_mod_range");
1094 /* FIXME: Is there data associated with this OP ? */
1096 case DW_OP_HP_unmod_range:
1097 printf ("DW_OP_HP_unmod_range");
1098 /* FIXME: Is there data associated with this OP ? */
1101 printf ("DW_OP_HP_tls");
1102 /* FIXME: Is there data associated with this OP ? */
1105 /* PGI (STMicroelectronics) extensions. */
1106 case DW_OP_PGI_omp_thread_num:
1107 /* Pushes the thread number for the current thread as it would be
1108 returned by the standard OpenMP library function:
1109 omp_get_thread_num(). The "current thread" is the thread for
1110 which the expression is being evaluated. */
1111 printf ("DW_OP_PGI_omp_thread_num");
1115 if (op >= DW_OP_lo_user
1116 && op <= DW_OP_hi_user)
1117 printf (_("(User defined location op)"));
1119 printf (_("(Unknown location op)"));
1120 /* No way to tell where the next op is, so just bail. */
1121 return need_frame_base;
1124 /* Separate the ops. */
1129 return need_frame_base;
1132 static unsigned char *
1133 read_and_display_attr_value (unsigned long attribute,
1135 unsigned char * data,
1136 unsigned long cu_offset,
1137 unsigned long pointer_size,
1138 unsigned long offset_size,
1140 debug_info * debug_info_p,
1142 struct dwarf_section * section)
1144 unsigned long uvalue = 0;
1145 unsigned char *block_start = NULL;
1146 unsigned char * orig_data = data;
1147 unsigned int bytes_read;
1154 case DW_FORM_ref_addr:
1155 if (dwarf_version == 2)
1157 uvalue = byte_get (data, pointer_size);
1158 data += pointer_size;
1160 else if (dwarf_version == 3 || dwarf_version == 4)
1162 uvalue = byte_get (data, offset_size);
1163 data += offset_size;
1167 error (_("Internal error: DWARF version is not 2, 3 or 4.\n"));
1172 uvalue = byte_get (data, pointer_size);
1173 data += pointer_size;
1177 case DW_FORM_sec_offset:
1178 uvalue = byte_get (data, offset_size);
1179 data += offset_size;
1182 case DW_FORM_flag_present:
1189 uvalue = byte_get (data++, 1);
1194 uvalue = byte_get (data, 2);
1200 uvalue = byte_get (data, 4);
1205 uvalue = read_leb128 (data, & bytes_read, 1);
1209 case DW_FORM_ref_udata:
1211 uvalue = read_leb128 (data, & bytes_read, 0);
1215 case DW_FORM_indirect:
1216 form = read_leb128 (data, & bytes_read, 0);
1219 printf (" %s", get_FORM_name (form));
1220 return read_and_display_attr_value (attribute, form, data,
1221 cu_offset, pointer_size,
1222 offset_size, dwarf_version,
1223 debug_info_p, do_loc,
1229 case DW_FORM_ref_addr:
1231 printf (" <0x%lx>", uvalue);
1237 case DW_FORM_ref_udata:
1239 printf (" <0x%lx>", uvalue + cu_offset);
1244 case DW_FORM_sec_offset:
1246 printf (" 0x%lx", uvalue);
1249 case DW_FORM_flag_present:
1256 printf (" %ld", uvalue);
1263 uvalue = byte_get (data, 4);
1264 printf (" 0x%lx", uvalue);
1265 printf (" 0x%lx", (unsigned long) byte_get (data + 4, 4));
1267 if ((do_loc || do_debug_loc || do_debug_ranges)
1268 && num_debug_info_entries == 0)
1270 if (sizeof (uvalue) == 8)
1271 uvalue = byte_get (data, 8);
1273 error (_("DW_FORM_data8 is unsupported when sizeof (unsigned long) != 8\n"));
1278 case DW_FORM_string:
1280 printf (" %s", data);
1281 data += strlen ((char *) data) + 1;
1285 case DW_FORM_exprloc:
1286 uvalue = read_leb128 (data, & bytes_read, 0);
1287 block_start = data + bytes_read;
1289 data = block_start + uvalue;
1291 data = display_block (block_start, uvalue);
1294 case DW_FORM_block1:
1295 uvalue = byte_get (data, 1);
1296 block_start = data + 1;
1298 data = block_start + uvalue;
1300 data = display_block (block_start, uvalue);
1303 case DW_FORM_block2:
1304 uvalue = byte_get (data, 2);
1305 block_start = data + 2;
1307 data = block_start + uvalue;
1309 data = display_block (block_start, uvalue);
1312 case DW_FORM_block4:
1313 uvalue = byte_get (data, 4);
1314 block_start = data + 4;
1316 data = block_start + uvalue;
1318 data = display_block (block_start, uvalue);
1323 printf (_(" (indirect string, offset: 0x%lx): %s"),
1324 uvalue, fetch_indirect_string (uvalue));
1327 case DW_FORM_indirect:
1328 /* Handled above. */
1331 case DW_FORM_ref_sig8:
1335 printf (" signature: ");
1336 for (i = 0; i < 8; i++)
1338 printf ("%02x", (unsigned) byte_get (data, 1));
1347 warn (_("Unrecognized form: %lu\n"), form);
1351 if ((do_loc || do_debug_loc || do_debug_ranges)
1352 && num_debug_info_entries == 0)
1356 case DW_AT_frame_base:
1357 have_frame_base = 1;
1358 case DW_AT_location:
1359 case DW_AT_string_length:
1360 case DW_AT_return_addr:
1361 case DW_AT_data_member_location:
1362 case DW_AT_vtable_elem_location:
1364 case DW_AT_static_link:
1365 case DW_AT_use_location:
1366 if (form == DW_FORM_data4
1367 || form == DW_FORM_data8
1368 || form == DW_FORM_sec_offset)
1370 /* Process location list. */
1371 unsigned int lmax = debug_info_p->max_loc_offsets;
1372 unsigned int num = debug_info_p->num_loc_offsets;
1374 if (lmax == 0 || num >= lmax)
1377 debug_info_p->loc_offsets = (long unsigned int *)
1378 xcrealloc (debug_info_p->loc_offsets,
1379 lmax, sizeof (*debug_info_p->loc_offsets));
1380 debug_info_p->have_frame_base = (int *)
1381 xcrealloc (debug_info_p->have_frame_base,
1382 lmax, sizeof (*debug_info_p->have_frame_base));
1383 debug_info_p->max_loc_offsets = lmax;
1385 debug_info_p->loc_offsets [num] = uvalue;
1386 debug_info_p->have_frame_base [num] = have_frame_base;
1387 debug_info_p->num_loc_offsets++;
1392 if (need_base_address)
1393 debug_info_p->base_address = uvalue;
1397 if (form == DW_FORM_data4
1398 || form == DW_FORM_data8
1399 || form == DW_FORM_sec_offset)
1401 /* Process range list. */
1402 unsigned int lmax = debug_info_p->max_range_lists;
1403 unsigned int num = debug_info_p->num_range_lists;
1405 if (lmax == 0 || num >= lmax)
1408 debug_info_p->range_lists = (long unsigned int *)
1409 xcrealloc (debug_info_p->range_lists,
1410 lmax, sizeof (*debug_info_p->range_lists));
1411 debug_info_p->max_range_lists = lmax;
1413 debug_info_p->range_lists [num] = uvalue;
1414 debug_info_p->num_range_lists++;
1426 /* For some attributes we can display further information. */
1434 case DW_INL_not_inlined:
1435 printf (_("(not inlined)"));
1437 case DW_INL_inlined:
1438 printf (_("(inlined)"));
1440 case DW_INL_declared_not_inlined:
1441 printf (_("(declared as inline but ignored)"));
1443 case DW_INL_declared_inlined:
1444 printf (_("(declared as inline and inlined)"));
1447 printf (_(" (Unknown inline attribute value: %lx)"), uvalue);
1452 case DW_AT_language:
1455 /* Ordered by the numeric value of these constants. */
1456 case DW_LANG_C89: printf ("(ANSI C)"); break;
1457 case DW_LANG_C: printf ("(non-ANSI C)"); break;
1458 case DW_LANG_Ada83: printf ("(Ada)"); break;
1459 case DW_LANG_C_plus_plus: printf ("(C++)"); break;
1460 case DW_LANG_Cobol74: printf ("(Cobol 74)"); break;
1461 case DW_LANG_Cobol85: printf ("(Cobol 85)"); break;
1462 case DW_LANG_Fortran77: printf ("(FORTRAN 77)"); break;
1463 case DW_LANG_Fortran90: printf ("(Fortran 90)"); break;
1464 case DW_LANG_Pascal83: printf ("(ANSI Pascal)"); break;
1465 case DW_LANG_Modula2: printf ("(Modula 2)"); break;
1466 /* DWARF 2.1 values. */
1467 case DW_LANG_Java: printf ("(Java)"); break;
1468 case DW_LANG_C99: printf ("(ANSI C99)"); break;
1469 case DW_LANG_Ada95: printf ("(ADA 95)"); break;
1470 case DW_LANG_Fortran95: printf ("(Fortran 95)"); break;
1471 /* DWARF 3 values. */
1472 case DW_LANG_PLI: printf ("(PLI)"); break;
1473 case DW_LANG_ObjC: printf ("(Objective C)"); break;
1474 case DW_LANG_ObjC_plus_plus: printf ("(Objective C++)"); break;
1475 case DW_LANG_UPC: printf ("(Unified Parallel C)"); break;
1476 case DW_LANG_D: printf ("(D)"); break;
1477 /* DWARF 4 values. */
1478 case DW_LANG_Python: printf ("(Python)"); break;
1479 /* MIPS extension. */
1480 case DW_LANG_Mips_Assembler: printf ("(MIPS assembler)"); break;
1481 /* UPC extension. */
1482 case DW_LANG_Upc: printf ("(Unified Parallel C)"); break;
1484 if (uvalue >= DW_LANG_lo_user && uvalue <= DW_LANG_hi_user)
1485 printf ("(implementation defined: %lx)", uvalue);
1487 printf ("(Unknown: %lx)", uvalue);
1492 case DW_AT_encoding:
1495 case DW_ATE_void: printf ("(void)"); break;
1496 case DW_ATE_address: printf ("(machine address)"); break;
1497 case DW_ATE_boolean: printf ("(boolean)"); break;
1498 case DW_ATE_complex_float: printf ("(complex float)"); break;
1499 case DW_ATE_float: printf ("(float)"); break;
1500 case DW_ATE_signed: printf ("(signed)"); break;
1501 case DW_ATE_signed_char: printf ("(signed char)"); break;
1502 case DW_ATE_unsigned: printf ("(unsigned)"); break;
1503 case DW_ATE_unsigned_char: printf ("(unsigned char)"); break;
1504 /* DWARF 2.1 values: */
1505 case DW_ATE_imaginary_float: printf ("(imaginary float)"); break;
1506 case DW_ATE_decimal_float: printf ("(decimal float)"); break;
1507 /* DWARF 3 values: */
1508 case DW_ATE_packed_decimal: printf ("(packed_decimal)"); break;
1509 case DW_ATE_numeric_string: printf ("(numeric_string)"); break;
1510 case DW_ATE_edited: printf ("(edited)"); break;
1511 case DW_ATE_signed_fixed: printf ("(signed_fixed)"); break;
1512 case DW_ATE_unsigned_fixed: printf ("(unsigned_fixed)"); break;
1513 /* HP extensions: */
1514 case DW_ATE_HP_float80: printf ("(HP_float80)"); break;
1515 case DW_ATE_HP_complex_float80: printf ("(HP_complex_float80)"); break;
1516 case DW_ATE_HP_float128: printf ("(HP_float128)"); break;
1517 case DW_ATE_HP_complex_float128:printf ("(HP_complex_float128)"); break;
1518 case DW_ATE_HP_floathpintel: printf ("(HP_floathpintel)"); break;
1519 case DW_ATE_HP_imaginary_float80: printf ("(HP_imaginary_float80)"); break;
1520 case DW_ATE_HP_imaginary_float128: printf ("(HP_imaginary_float128)"); break;
1523 if (uvalue >= DW_ATE_lo_user
1524 && uvalue <= DW_ATE_hi_user)
1525 printf ("(user defined type)");
1527 printf ("(unknown type)");
1532 case DW_AT_accessibility:
1535 case DW_ACCESS_public: printf ("(public)"); break;
1536 case DW_ACCESS_protected: printf ("(protected)"); break;
1537 case DW_ACCESS_private: printf ("(private)"); break;
1539 printf ("(unknown accessibility)");
1544 case DW_AT_visibility:
1547 case DW_VIS_local: printf ("(local)"); break;
1548 case DW_VIS_exported: printf ("(exported)"); break;
1549 case DW_VIS_qualified: printf ("(qualified)"); break;
1550 default: printf ("(unknown visibility)"); break;
1554 case DW_AT_virtuality:
1557 case DW_VIRTUALITY_none: printf ("(none)"); break;
1558 case DW_VIRTUALITY_virtual: printf ("(virtual)"); break;
1559 case DW_VIRTUALITY_pure_virtual:printf ("(pure_virtual)"); break;
1560 default: printf ("(unknown virtuality)"); break;
1564 case DW_AT_identifier_case:
1567 case DW_ID_case_sensitive: printf ("(case_sensitive)"); break;
1568 case DW_ID_up_case: printf ("(up_case)"); break;
1569 case DW_ID_down_case: printf ("(down_case)"); break;
1570 case DW_ID_case_insensitive: printf ("(case_insensitive)"); break;
1571 default: printf ("(unknown case)"); break;
1575 case DW_AT_calling_convention:
1578 case DW_CC_normal: printf ("(normal)"); break;
1579 case DW_CC_program: printf ("(program)"); break;
1580 case DW_CC_nocall: printf ("(nocall)"); break;
1582 if (uvalue >= DW_CC_lo_user
1583 && uvalue <= DW_CC_hi_user)
1584 printf ("(user defined)");
1586 printf ("(unknown convention)");
1590 case DW_AT_ordering:
1593 case -1: printf ("(undefined)"); break;
1594 case 0: printf ("(row major)"); break;
1595 case 1: printf ("(column major)"); break;
1599 case DW_AT_frame_base:
1600 have_frame_base = 1;
1601 case DW_AT_location:
1602 case DW_AT_string_length:
1603 case DW_AT_return_addr:
1604 case DW_AT_data_member_location:
1605 case DW_AT_vtable_elem_location:
1607 case DW_AT_static_link:
1608 case DW_AT_use_location:
1609 if (form == DW_FORM_data4
1610 || form == DW_FORM_data8
1611 || form == DW_FORM_sec_offset)
1612 printf (_("(location list)"));
1614 case DW_AT_allocated:
1615 case DW_AT_associated:
1616 case DW_AT_data_location:
1618 case DW_AT_upper_bound:
1619 case DW_AT_lower_bound:
1622 int need_frame_base;
1625 need_frame_base = decode_location_expression (block_start,
1628 cu_offset, section);
1630 if (need_frame_base && !have_frame_base)
1631 printf (_(" [without DW_AT_frame_base]"));
1637 if (form == DW_FORM_ref_sig8)
1640 if (form == DW_FORM_ref1
1641 || form == DW_FORM_ref2
1642 || form == DW_FORM_ref4)
1643 uvalue += cu_offset;
1645 if (uvalue >= section->size)
1646 warn (_("Offset %lx used as value for DW_AT_import attribute of DIE at offset %lx is too big.\n"),
1647 uvalue, (unsigned long) (orig_data - section->start));
1650 unsigned long abbrev_number;
1651 abbrev_entry * entry;
1653 abbrev_number = read_leb128 (section->start + uvalue, NULL, 0);
1655 printf ("[Abbrev Number: %ld", abbrev_number);
1656 for (entry = first_abbrev; entry != NULL; entry = entry->next)
1657 if (entry->entry == abbrev_number)
1660 printf (" (%s)", get_TAG_name (entry->tag));
1674 get_AT_name (unsigned long attribute)
1678 case DW_AT_sibling: return "DW_AT_sibling";
1679 case DW_AT_location: return "DW_AT_location";
1680 case DW_AT_name: return "DW_AT_name";
1681 case DW_AT_ordering: return "DW_AT_ordering";
1682 case DW_AT_subscr_data: return "DW_AT_subscr_data";
1683 case DW_AT_byte_size: return "DW_AT_byte_size";
1684 case DW_AT_bit_offset: return "DW_AT_bit_offset";
1685 case DW_AT_bit_size: return "DW_AT_bit_size";
1686 case DW_AT_element_list: return "DW_AT_element_list";
1687 case DW_AT_stmt_list: return "DW_AT_stmt_list";
1688 case DW_AT_low_pc: return "DW_AT_low_pc";
1689 case DW_AT_high_pc: return "DW_AT_high_pc";
1690 case DW_AT_language: return "DW_AT_language";
1691 case DW_AT_member: return "DW_AT_member";
1692 case DW_AT_discr: return "DW_AT_discr";
1693 case DW_AT_discr_value: return "DW_AT_discr_value";
1694 case DW_AT_visibility: return "DW_AT_visibility";
1695 case DW_AT_import: return "DW_AT_import";
1696 case DW_AT_string_length: return "DW_AT_string_length";
1697 case DW_AT_common_reference: return "DW_AT_common_reference";
1698 case DW_AT_comp_dir: return "DW_AT_comp_dir";
1699 case DW_AT_const_value: return "DW_AT_const_value";
1700 case DW_AT_containing_type: return "DW_AT_containing_type";
1701 case DW_AT_default_value: return "DW_AT_default_value";
1702 case DW_AT_inline: return "DW_AT_inline";
1703 case DW_AT_is_optional: return "DW_AT_is_optional";
1704 case DW_AT_lower_bound: return "DW_AT_lower_bound";
1705 case DW_AT_producer: return "DW_AT_producer";
1706 case DW_AT_prototyped: return "DW_AT_prototyped";
1707 case DW_AT_return_addr: return "DW_AT_return_addr";
1708 case DW_AT_start_scope: return "DW_AT_start_scope";
1709 case DW_AT_stride_size: return "DW_AT_stride_size";
1710 case DW_AT_upper_bound: return "DW_AT_upper_bound";
1711 case DW_AT_abstract_origin: return "DW_AT_abstract_origin";
1712 case DW_AT_accessibility: return "DW_AT_accessibility";
1713 case DW_AT_address_class: return "DW_AT_address_class";
1714 case DW_AT_artificial: return "DW_AT_artificial";
1715 case DW_AT_base_types: return "DW_AT_base_types";
1716 case DW_AT_calling_convention: return "DW_AT_calling_convention";
1717 case DW_AT_count: return "DW_AT_count";
1718 case DW_AT_data_member_location: return "DW_AT_data_member_location";
1719 case DW_AT_decl_column: return "DW_AT_decl_column";
1720 case DW_AT_decl_file: return "DW_AT_decl_file";
1721 case DW_AT_decl_line: return "DW_AT_decl_line";
1722 case DW_AT_declaration: return "DW_AT_declaration";
1723 case DW_AT_discr_list: return "DW_AT_discr_list";
1724 case DW_AT_encoding: return "DW_AT_encoding";
1725 case DW_AT_external: return "DW_AT_external";
1726 case DW_AT_frame_base: return "DW_AT_frame_base";
1727 case DW_AT_friend: return "DW_AT_friend";
1728 case DW_AT_identifier_case: return "DW_AT_identifier_case";
1729 case DW_AT_macro_info: return "DW_AT_macro_info";
1730 case DW_AT_namelist_items: return "DW_AT_namelist_items";
1731 case DW_AT_priority: return "DW_AT_priority";
1732 case DW_AT_segment: return "DW_AT_segment";
1733 case DW_AT_specification: return "DW_AT_specification";
1734 case DW_AT_static_link: return "DW_AT_static_link";
1735 case DW_AT_type: return "DW_AT_type";
1736 case DW_AT_use_location: return "DW_AT_use_location";
1737 case DW_AT_variable_parameter: return "DW_AT_variable_parameter";
1738 case DW_AT_virtuality: return "DW_AT_virtuality";
1739 case DW_AT_vtable_elem_location: return "DW_AT_vtable_elem_location";
1740 /* DWARF 2.1 values. */
1741 case DW_AT_allocated: return "DW_AT_allocated";
1742 case DW_AT_associated: return "DW_AT_associated";
1743 case DW_AT_data_location: return "DW_AT_data_location";
1744 case DW_AT_stride: return "DW_AT_stride";
1745 case DW_AT_entry_pc: return "DW_AT_entry_pc";
1746 case DW_AT_use_UTF8: return "DW_AT_use_UTF8";
1747 case DW_AT_extension: return "DW_AT_extension";
1748 case DW_AT_ranges: return "DW_AT_ranges";
1749 case DW_AT_trampoline: return "DW_AT_trampoline";
1750 case DW_AT_call_column: return "DW_AT_call_column";
1751 case DW_AT_call_file: return "DW_AT_call_file";
1752 case DW_AT_call_line: return "DW_AT_call_line";
1753 case DW_AT_description: return "DW_AT_description";
1754 case DW_AT_binary_scale: return "DW_AT_binary_scale";
1755 case DW_AT_decimal_scale: return "DW_AT_decimal_scale";
1756 case DW_AT_small: return "DW_AT_small";
1757 case DW_AT_decimal_sign: return "DW_AT_decimal_sign";
1758 case DW_AT_digit_count: return "DW_AT_digit_count";
1759 case DW_AT_picture_string: return "DW_AT_picture_string";
1760 case DW_AT_mutable: return "DW_AT_mutable";
1761 case DW_AT_threads_scaled: return "DW_AT_threads_scaled";
1762 case DW_AT_explicit: return "DW_AT_explicit";
1763 case DW_AT_object_pointer: return "DW_AT_object_pointer";
1764 case DW_AT_endianity: return "DW_AT_endianity";
1765 case DW_AT_elemental: return "DW_AT_elemental";
1766 case DW_AT_pure: return "DW_AT_pure";
1767 case DW_AT_recursive: return "DW_AT_recursive";
1768 /* DWARF 4 values. */
1769 case DW_AT_signature: return "DW_AT_signature";
1770 case DW_AT_main_subprogram: return "DW_AT_main_subprogram";
1771 case DW_AT_data_bit_offset: return "DW_AT_data_bit_offset";
1772 case DW_AT_const_expr: return "DW_AT_const_expr";
1773 case DW_AT_enum_class: return "DW_AT_enum_class";
1774 case DW_AT_linkage_name: return "DW_AT_linkage_name";
1776 /* HP and SGI/MIPS extensions. */
1777 case DW_AT_MIPS_loop_begin: return "DW_AT_MIPS_loop_begin";
1778 case DW_AT_MIPS_tail_loop_begin: return "DW_AT_MIPS_tail_loop_begin";
1779 case DW_AT_MIPS_epilog_begin: return "DW_AT_MIPS_epilog_begin";
1780 case DW_AT_MIPS_loop_unroll_factor: return "DW_AT_MIPS_loop_unroll_factor";
1781 case DW_AT_MIPS_software_pipeline_depth: return "DW_AT_MIPS_software_pipeline_depth";
1782 case DW_AT_MIPS_linkage_name: return "DW_AT_MIPS_linkage_name";
1783 case DW_AT_MIPS_stride: return "DW_AT_MIPS_stride";
1784 case DW_AT_MIPS_abstract_name: return "DW_AT_MIPS_abstract_name";
1785 case DW_AT_MIPS_clone_origin: return "DW_AT_MIPS_clone_origin";
1786 case DW_AT_MIPS_has_inlines: return "DW_AT_MIPS_has_inlines";
1788 /* HP Extensions. */
1789 case DW_AT_HP_block_index: return "DW_AT_HP_block_index";
1790 case DW_AT_HP_actuals_stmt_list: return "DW_AT_HP_actuals_stmt_list";
1791 case DW_AT_HP_proc_per_section: return "DW_AT_HP_proc_per_section";
1792 case DW_AT_HP_raw_data_ptr: return "DW_AT_HP_raw_data_ptr";
1793 case DW_AT_HP_pass_by_reference: return "DW_AT_HP_pass_by_reference";
1794 case DW_AT_HP_opt_level: return "DW_AT_HP_opt_level";
1795 case DW_AT_HP_prof_version_id: return "DW_AT_HP_prof_version_id";
1796 case DW_AT_HP_opt_flags: return "DW_AT_HP_opt_flags";
1797 case DW_AT_HP_cold_region_low_pc: return "DW_AT_HP_cold_region_low_pc";
1798 case DW_AT_HP_cold_region_high_pc: return "DW_AT_HP_cold_region_high_pc";
1799 case DW_AT_HP_all_variables_modifiable: return "DW_AT_HP_all_variables_modifiable";
1800 case DW_AT_HP_linkage_name: return "DW_AT_HP_linkage_name";
1801 case DW_AT_HP_prof_flags: return "DW_AT_HP_prof_flags";
1803 /* One value is shared by the MIPS and HP extensions: */
1804 case DW_AT_MIPS_fde: return "DW_AT_MIPS_fde or DW_AT_HP_unmodifiable";
1806 /* GNU extensions. */
1807 case DW_AT_sf_names: return "DW_AT_sf_names";
1808 case DW_AT_src_info: return "DW_AT_src_info";
1809 case DW_AT_mac_info: return "DW_AT_mac_info";
1810 case DW_AT_src_coords: return "DW_AT_src_coords";
1811 case DW_AT_body_begin: return "DW_AT_body_begin";
1812 case DW_AT_body_end: return "DW_AT_body_end";
1813 case DW_AT_GNU_vector: return "DW_AT_GNU_vector";
1814 case DW_AT_GNU_guarded_by: return "DW_AT_GNU_guarded_by";
1815 case DW_AT_GNU_pt_guarded_by: return "DW_AT_GNU_pt_guarded_by";
1816 case DW_AT_GNU_guarded: return "DW_AT_GNU_guarded";
1817 case DW_AT_GNU_pt_guarded: return "DW_AT_GNU_pt_guarded";
1818 case DW_AT_GNU_locks_excluded: return "DW_AT_GNU_locks_excluded";
1819 case DW_AT_GNU_exclusive_locks_required: return "DW_AT_GNU_exclusive_locks_required";
1820 case DW_AT_GNU_shared_locks_required: return "DW_AT_GNU_shared_locks_required";
1821 case DW_AT_GNU_odr_signature: return "DW_AT_GNU_odr_signature";
1822 case DW_AT_use_GNAT_descriptive_type: return "DW_AT_use_GNAT_descriptive_type";
1823 case DW_AT_GNAT_descriptive_type: return "DW_AT_GNAT_descriptive_type";
1825 /* UPC extension. */
1826 case DW_AT_upc_threads_scaled: return "DW_AT_upc_threads_scaled";
1828 /* PGI (STMicroelectronics) extensions. */
1829 case DW_AT_PGI_lbase: return "DW_AT_PGI_lbase";
1830 case DW_AT_PGI_soffset: return "DW_AT_PGI_soffset";
1831 case DW_AT_PGI_lstride: return "DW_AT_PGI_lstride";
1835 static char buffer[100];
1837 snprintf (buffer, sizeof (buffer), _("Unknown AT value: %lx"),
1844 static unsigned char *
1845 read_and_display_attr (unsigned long attribute,
1847 unsigned char * data,
1848 unsigned long cu_offset,
1849 unsigned long pointer_size,
1850 unsigned long offset_size,
1852 debug_info * debug_info_p,
1854 struct dwarf_section * section)
1857 printf (" %-18s:", get_AT_name (attribute));
1858 data = read_and_display_attr_value (attribute, form, data, cu_offset,
1859 pointer_size, offset_size,
1860 dwarf_version, debug_info_p,
1868 /* Process the contents of a .debug_info section. If do_loc is non-zero
1869 then we are scanning for location lists and we do not want to display
1870 anything to the user. If do_types is non-zero, we are processing
1871 a .debug_types section instead of a .debug_info section. */
1874 process_debug_info (struct dwarf_section *section,
1879 unsigned char *start = section->start;
1880 unsigned char *end = start + section->size;
1881 unsigned char *section_begin;
1883 unsigned int num_units = 0;
1885 if ((do_loc || do_debug_loc || do_debug_ranges)
1886 && num_debug_info_entries == 0
1889 unsigned long length;
1891 /* First scan the section to get the number of comp units. */
1892 for (section_begin = start, num_units = 0; section_begin < end;
1895 /* Read the first 4 bytes. For a 32-bit DWARF section, this
1896 will be the length. For a 64-bit DWARF section, it'll be
1897 the escape code 0xffffffff followed by an 8 byte length. */
1898 length = byte_get (section_begin, 4);
1900 if (length == 0xffffffff)
1902 length = byte_get (section_begin + 4, 8);
1903 section_begin += length + 12;
1905 else if (length >= 0xfffffff0 && length < 0xffffffff)
1907 warn (_("Reserved length value (%lx) found in section %s\n"), length, section->name);
1911 section_begin += length + 4;
1913 /* Negative values are illegal, they may even cause infinite
1914 looping. This can happen if we can't accurately apply
1915 relocations to an object file. */
1916 if ((signed long) length <= 0)
1918 warn (_("Corrupt unit length (%lx) found in section %s\n"), length, section->name);
1925 error (_("No comp units in %s section ?"), section->name);
1929 /* Then allocate an array to hold the information. */
1930 debug_information = (debug_info *) cmalloc (num_units,
1931 sizeof (* debug_information));
1932 if (debug_information == NULL)
1934 error (_("Not enough memory for a debug info array of %u entries"),
1942 printf (_("Contents of the %s section:\n\n"), section->name);
1944 load_debug_section (str, file);
1947 load_debug_section (abbrev, file);
1948 if (debug_displays [abbrev].section.start == NULL)
1950 warn (_("Unable to locate %s section!\n"),
1951 debug_displays [abbrev].section.name);
1955 for (section_begin = start, unit = 0; start < end; unit++)
1957 DWARF2_Internal_CompUnit compunit;
1958 unsigned char *hdrptr;
1959 unsigned char *cu_abbrev_offset_ptr;
1960 unsigned char *tags;
1962 unsigned long cu_offset;
1964 int initial_length_size;
1965 unsigned char signature[8];
1966 unsigned long type_offset = 0;
1970 compunit.cu_length = byte_get (hdrptr, 4);
1973 if (compunit.cu_length == 0xffffffff)
1975 compunit.cu_length = byte_get (hdrptr, 8);
1978 initial_length_size = 12;
1983 initial_length_size = 4;
1986 compunit.cu_version = byte_get (hdrptr, 2);
1989 cu_offset = start - section_begin;
1991 cu_abbrev_offset_ptr = hdrptr;
1992 compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size);
1993 hdrptr += offset_size;
1995 compunit.cu_pointer_size = byte_get (hdrptr, 1);
2002 for (i = 0; i < 8; i++)
2004 signature[i] = byte_get (hdrptr, 1);
2008 type_offset = byte_get (hdrptr, offset_size);
2009 hdrptr += offset_size;
2012 if ((do_loc || do_debug_loc || do_debug_ranges)
2013 && num_debug_info_entries == 0
2016 debug_information [unit].cu_offset = cu_offset;
2017 debug_information [unit].pointer_size
2018 = compunit.cu_pointer_size;
2019 debug_information [unit].base_address = 0;
2020 debug_information [unit].loc_offsets = NULL;
2021 debug_information [unit].have_frame_base = NULL;
2022 debug_information [unit].max_loc_offsets = 0;
2023 debug_information [unit].num_loc_offsets = 0;
2024 debug_information [unit].range_lists = NULL;
2025 debug_information [unit].max_range_lists= 0;
2026 debug_information [unit].num_range_lists = 0;
2031 printf (_(" Compilation Unit @ offset 0x%lx:\n"), cu_offset);
2032 printf (_(" Length: 0x%lx (%s)\n"), compunit.cu_length,
2033 initial_length_size == 8 ? "64-bit" : "32-bit");
2034 printf (_(" Version: %d\n"), compunit.cu_version);
2035 printf (_(" Abbrev Offset: %ld\n"), compunit.cu_abbrev_offset);
2036 printf (_(" Pointer Size: %d\n"), compunit.cu_pointer_size);
2040 printf (_(" Signature: "));
2041 for (i = 0; i < 8; i++)
2042 printf ("%02x", signature[i]);
2044 printf (_(" Type Offset: 0x%lx\n"), type_offset);
2048 if (cu_offset + compunit.cu_length + initial_length_size
2051 warn (_("Debug info is corrupted, length of CU at %lx extends beyond end of section (length = %lx)\n"),
2052 cu_offset, compunit.cu_length);
2056 start += compunit.cu_length + initial_length_size;
2058 if (compunit.cu_version != 2
2059 && compunit.cu_version != 3
2060 && compunit.cu_version != 4)
2062 warn (_("CU at offset %lx contains corrupt or unsupported version number: %d.\n"),
2063 cu_offset, compunit.cu_version);
2069 /* Process the abbrevs used by this compilation unit. DWARF
2070 sections under Mach-O have non-zero addresses. */
2071 if (compunit.cu_abbrev_offset >= debug_displays [abbrev].section.size)
2072 warn (_("Debug info is corrupted, abbrev offset (%lx) is larger than abbrev section size (%lx)\n"),
2073 (unsigned long) compunit.cu_abbrev_offset,
2074 (unsigned long) debug_displays [abbrev].section.size);
2076 process_abbrev_section
2077 ((unsigned char *) debug_displays [abbrev].section.start
2078 + compunit.cu_abbrev_offset - debug_displays [abbrev].section.address,
2079 (unsigned char *) debug_displays [abbrev].section.start
2080 + debug_displays [abbrev].section.size);
2083 while (tags < start)
2085 unsigned int bytes_read;
2086 unsigned long abbrev_number;
2087 unsigned long die_offset;
2088 abbrev_entry *entry;
2091 die_offset = tags - section_begin;
2093 abbrev_number = read_leb128 (tags, & bytes_read, 0);
2096 /* A null DIE marks the end of a list of siblings or it may also be
2097 a section padding. */
2098 if (abbrev_number == 0)
2100 /* Check if it can be a section padding for the last CU. */
2101 if (level == 0 && start == end)
2105 for (chk = tags; chk < start; chk++)
2115 static unsigned num_bogus_warns = 0;
2117 if (num_bogus_warns < 3)
2119 warn (_("Bogus end-of-siblings marker detected at offset %lx in .debug_info section\n"),
2122 if (num_bogus_warns == 3)
2123 warn (_("Further warnings about bogus end-of-sibling markers suppressed\n"));
2130 printf (_(" <%d><%lx>: Abbrev Number: %lu"),
2131 level, die_offset, abbrev_number);
2133 /* Scan through the abbreviation list until we reach the
2135 for (entry = first_abbrev;
2136 entry && entry->entry != abbrev_number;
2137 entry = entry->next)
2147 warn (_("DIE at offset %lx refers to abbreviation number %lu which does not exist\n"),
2148 die_offset, abbrev_number);
2153 printf (_(" (%s)\n"), get_TAG_name (entry->tag));
2158 need_base_address = 0;
2160 case DW_TAG_compile_unit:
2161 need_base_address = 1;
2163 case DW_TAG_entry_point:
2164 case DW_TAG_subprogram:
2165 need_base_address = 0;
2166 /* Assuming that there is no DW_AT_frame_base. */
2167 have_frame_base = 0;
2171 for (attr = entry->first_attr; attr; attr = attr->next)
2174 /* Show the offset from where the tag was extracted. */
2175 printf (" <%2lx>", (unsigned long)(tags - section_begin));
2177 tags = read_and_display_attr (attr->attribute,
2180 compunit.cu_pointer_size,
2182 compunit.cu_version,
2183 debug_information + unit,
2187 if (entry->children)
2192 /* Set num_debug_info_entries here so that it can be used to check if
2193 we need to process .debug_loc and .debug_ranges sections. */
2194 if ((do_loc || do_debug_loc || do_debug_ranges)
2195 && num_debug_info_entries == 0
2197 num_debug_info_entries = num_units;
2207 /* Locate and scan the .debug_info section in the file and record the pointer
2208 sizes and offsets for the compilation units in it. Usually an executable
2209 will have just one pointer size, but this is not guaranteed, and so we try
2210 not to make any assumptions. Returns zero upon failure, or the number of
2211 compilation units upon success. */
2214 load_debug_info (void * file)
2216 /* Reset the last pointer size so that we can issue correct error
2217 messages if we are displaying the contents of more than one section. */
2218 last_pointer_size = 0;
2219 warned_about_missing_comp_units = FALSE;
2221 /* If we have already tried and failed to load the .debug_info
2222 section then do not bother to repear the task. */
2223 if (num_debug_info_entries == DEBUG_INFO_UNAVAILABLE)
2226 /* If we already have the information there is nothing else to do. */
2227 if (num_debug_info_entries > 0)
2228 return num_debug_info_entries;
2230 if (load_debug_section (info, file)
2231 && process_debug_info (&debug_displays [info].section, file, 1, 0))
2232 return num_debug_info_entries;
2234 num_debug_info_entries = DEBUG_INFO_UNAVAILABLE;
2239 display_debug_lines_raw (struct dwarf_section *section,
2240 unsigned char *data,
2243 unsigned char *start = section->start;
2245 printf (_("Raw dump of debug contents of section %s:\n\n"),
2250 DWARF2_Internal_LineInfo linfo;
2251 unsigned char *standard_opcodes;
2252 unsigned char *end_of_sequence;
2253 unsigned char *hdrptr;
2254 unsigned long hdroff;
2255 int initial_length_size;
2260 hdroff = hdrptr - start;
2262 /* Check the length of the block. */
2263 linfo.li_length = byte_get (hdrptr, 4);
2266 if (linfo.li_length == 0xffffffff)
2268 /* This section is 64-bit DWARF 3. */
2269 linfo.li_length = byte_get (hdrptr, 8);
2272 initial_length_size = 12;
2277 initial_length_size = 4;
2280 if (linfo.li_length + initial_length_size > section->size)
2283 (_("The information in section %s appears to be corrupt - the section is too small\n"),
2288 /* Check its version number. */
2289 linfo.li_version = byte_get (hdrptr, 2);
2291 if (linfo.li_version != 2
2292 && linfo.li_version != 3
2293 && linfo.li_version != 4)
2295 warn (_("Only DWARF version 2, 3 and 4 line info is currently supported.\n"));
2299 linfo.li_prologue_length = byte_get (hdrptr, offset_size);
2300 hdrptr += offset_size;
2301 linfo.li_min_insn_length = byte_get (hdrptr, 1);
2303 if (linfo.li_version >= 4)
2305 linfo.li_max_ops_per_insn = byte_get (hdrptr, 1);
2307 if (linfo.li_max_ops_per_insn == 0)
2309 warn (_("Invalid maximum operations per insn.\n"));
2314 linfo.li_max_ops_per_insn = 1;
2315 linfo.li_default_is_stmt = byte_get (hdrptr, 1);
2317 linfo.li_line_base = byte_get (hdrptr, 1);
2319 linfo.li_line_range = byte_get (hdrptr, 1);
2321 linfo.li_opcode_base = byte_get (hdrptr, 1);
2324 /* Sign extend the line base field. */
2325 linfo.li_line_base <<= 24;
2326 linfo.li_line_base >>= 24;
2328 printf (_(" Offset: 0x%lx\n"), hdroff);
2329 printf (_(" Length: %ld\n"), linfo.li_length);
2330 printf (_(" DWARF Version: %d\n"), linfo.li_version);
2331 printf (_(" Prologue Length: %d\n"), linfo.li_prologue_length);
2332 printf (_(" Minimum Instruction Length: %d\n"), linfo.li_min_insn_length);
2333 if (linfo.li_version >= 4)
2334 printf (_(" Maximum Ops per Instruction: %d\n"), linfo.li_max_ops_per_insn);
2335 printf (_(" Initial value of 'is_stmt': %d\n"), linfo.li_default_is_stmt);
2336 printf (_(" Line Base: %d\n"), linfo.li_line_base);
2337 printf (_(" Line Range: %d\n"), linfo.li_line_range);
2338 printf (_(" Opcode Base: %d\n"), linfo.li_opcode_base);
2340 end_of_sequence = data + linfo.li_length + initial_length_size;
2342 reset_state_machine (linfo.li_default_is_stmt);
2344 /* Display the contents of the Opcodes table. */
2345 standard_opcodes = hdrptr;
2347 printf (_("\n Opcodes:\n"));
2349 for (i = 1; i < linfo.li_opcode_base; i++)
2350 printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]);
2352 /* Display the contents of the Directory table. */
2353 data = standard_opcodes + linfo.li_opcode_base - 1;
2356 printf (_("\n The Directory Table is empty.\n"));
2359 printf (_("\n The Directory Table:\n"));
2363 printf (_(" %s\n"), data);
2365 data += strlen ((char *) data) + 1;
2369 /* Skip the NUL at the end of the table. */
2372 /* Display the contents of the File Name table. */
2374 printf (_("\n The File Name Table is empty.\n"));
2377 printf (_("\n The File Name Table:\n"));
2378 printf (_(" Entry\tDir\tTime\tSize\tName\n"));
2382 unsigned char *name;
2383 unsigned int bytes_read;
2385 printf (_(" %d\t"), ++state_machine_regs.last_file_entry);
2388 data += strlen ((char *) data) + 1;
2390 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
2392 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
2394 printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0));
2396 printf (_("%s\n"), name);
2400 /* Skip the NUL at the end of the table. */
2403 /* Now display the statements. */
2404 printf (_("\n Line Number Statements:\n"));
2406 while (data < end_of_sequence)
2408 unsigned char op_code;
2410 unsigned long int uladv;
2411 unsigned int bytes_read;
2415 if (op_code >= linfo.li_opcode_base)
2417 op_code -= linfo.li_opcode_base;
2418 uladv = (op_code / linfo.li_line_range);
2419 if (linfo.li_max_ops_per_insn == 1)
2421 uladv *= linfo.li_min_insn_length;
2422 state_machine_regs.address += uladv;
2423 printf (_(" Special opcode %d: advance Address by %lu to 0x%lx"),
2424 op_code, uladv, state_machine_regs.address);
2428 state_machine_regs.address
2429 += ((state_machine_regs.op_index + uladv)
2430 / linfo.li_max_ops_per_insn)
2431 * linfo.li_min_insn_length;
2432 state_machine_regs.op_index
2433 = (state_machine_regs.op_index + uladv)
2434 % linfo.li_max_ops_per_insn;
2435 printf (_(" Special opcode %d: advance Address by %lu to 0x%lx[%d]"),
2436 op_code, uladv, state_machine_regs.address,
2437 state_machine_regs.op_index);
2439 adv = (op_code % linfo.li_line_range) + linfo.li_line_base;
2440 state_machine_regs.line += adv;
2441 printf (_(" and Line by %d to %d\n"),
2442 adv, state_machine_regs.line);
2444 else switch (op_code)
2446 case DW_LNS_extended_op:
2447 data += process_extended_line_op (data, linfo.li_default_is_stmt);
2451 printf (_(" Copy\n"));
2454 case DW_LNS_advance_pc:
2455 uladv = read_leb128 (data, & bytes_read, 0);
2457 if (linfo.li_max_ops_per_insn == 1)
2459 uladv *= linfo.li_min_insn_length;
2460 state_machine_regs.address += uladv;
2461 printf (_(" Advance PC by %lu to 0x%lx\n"), uladv,
2462 state_machine_regs.address);
2466 state_machine_regs.address
2467 += ((state_machine_regs.op_index + uladv)
2468 / linfo.li_max_ops_per_insn)
2469 * linfo.li_min_insn_length;
2470 state_machine_regs.op_index
2471 = (state_machine_regs.op_index + uladv)
2472 % linfo.li_max_ops_per_insn;
2473 printf (_(" Advance PC by %lu to 0x%lx[%d]\n"), uladv,
2474 state_machine_regs.address,
2475 state_machine_regs.op_index);
2479 case DW_LNS_advance_line:
2480 adv = read_leb128 (data, & bytes_read, 1);
2482 state_machine_regs.line += adv;
2483 printf (_(" Advance Line by %d to %d\n"), adv,
2484 state_machine_regs.line);
2487 case DW_LNS_set_file:
2488 adv = read_leb128 (data, & bytes_read, 0);
2490 printf (_(" Set File Name to entry %d in the File Name Table\n"),
2492 state_machine_regs.file = adv;
2495 case DW_LNS_set_column:
2496 uladv = read_leb128 (data, & bytes_read, 0);
2498 printf (_(" Set column to %lu\n"), uladv);
2499 state_machine_regs.column = uladv;
2502 case DW_LNS_negate_stmt:
2503 adv = state_machine_regs.is_stmt;
2505 printf (_(" Set is_stmt to %d\n"), adv);
2506 state_machine_regs.is_stmt = adv;
2509 case DW_LNS_set_basic_block:
2510 printf (_(" Set basic block\n"));
2511 state_machine_regs.basic_block = 1;
2514 case DW_LNS_const_add_pc:
2515 uladv = ((255 - linfo.li_opcode_base) / linfo.li_line_range);
2516 if (linfo.li_max_ops_per_insn)
2518 uladv *= linfo.li_min_insn_length;
2519 state_machine_regs.address += uladv;
2520 printf (_(" Advance PC by constant %lu to 0x%lx\n"), uladv,
2521 state_machine_regs.address);
2525 state_machine_regs.address
2526 += ((state_machine_regs.op_index + uladv)
2527 / linfo.li_max_ops_per_insn)
2528 * linfo.li_min_insn_length;
2529 state_machine_regs.op_index
2530 = (state_machine_regs.op_index + uladv)
2531 % linfo.li_max_ops_per_insn;
2532 printf (_(" Advance PC by constant %lu to 0x%lx[%d]\n"),
2533 uladv, state_machine_regs.address,
2534 state_machine_regs.op_index);
2538 case DW_LNS_fixed_advance_pc:
2539 uladv = byte_get (data, 2);
2541 state_machine_regs.address += uladv;
2542 state_machine_regs.op_index = 0;
2543 printf (_(" Advance PC by fixed size amount %lu to 0x%lx\n"),
2544 uladv, state_machine_regs.address);
2547 case DW_LNS_set_prologue_end:
2548 printf (_(" Set prologue_end to true\n"));
2551 case DW_LNS_set_epilogue_begin:
2552 printf (_(" Set epilogue_begin to true\n"));
2555 case DW_LNS_set_isa:
2556 uladv = read_leb128 (data, & bytes_read, 0);
2558 printf (_(" Set ISA to %lu\n"), uladv);
2562 printf (_(" Unknown opcode %d with operands: "), op_code);
2564 for (i = standard_opcodes[op_code - 1]; i > 0 ; --i)
2566 printf ("0x%lx%s", read_leb128 (data, &bytes_read, 0),
2567 i == 1 ? "" : ", ");
2582 unsigned char *name;
2583 unsigned int directory_index;
2584 unsigned int modification_date;
2585 unsigned int length;
2588 /* Output a decoded representation of the .debug_line section. */
2591 display_debug_lines_decoded (struct dwarf_section *section,
2592 unsigned char *data,
2595 printf (_("Decoded dump of debug contents of section %s:\n\n"),
2600 /* This loop amounts to one iteration per compilation unit. */
2601 DWARF2_Internal_LineInfo linfo;
2602 unsigned char *standard_opcodes;
2603 unsigned char *end_of_sequence;
2604 unsigned char *hdrptr;
2605 int initial_length_size;
2608 File_Entry *file_table = NULL;
2609 unsigned char **directory_table = NULL;
2610 unsigned int prev_line = 0;
2614 /* Extract information from the Line Number Program Header.
2615 (section 6.2.4 in the Dwarf3 doc). */
2617 /* Get the length of this CU's line number information block. */
2618 linfo.li_length = byte_get (hdrptr, 4);
2621 if (linfo.li_length == 0xffffffff)
2623 /* This section is 64-bit DWARF 3. */
2624 linfo.li_length = byte_get (hdrptr, 8);
2627 initial_length_size = 12;
2632 initial_length_size = 4;
2635 if (linfo.li_length + initial_length_size > section->size)
2637 warn (_("The line info appears to be corrupt - "
2638 "the section is too small\n"));
2642 /* Get this CU's Line Number Block version number. */
2643 linfo.li_version = byte_get (hdrptr, 2);
2645 if (linfo.li_version != 2
2646 && linfo.li_version != 3
2647 && linfo.li_version != 4)
2649 warn (_("Only DWARF version 2, 3 and 4 line info is currently "
2654 linfo.li_prologue_length = byte_get (hdrptr, offset_size);
2655 hdrptr += offset_size;
2656 linfo.li_min_insn_length = byte_get (hdrptr, 1);
2658 if (linfo.li_version >= 4)
2660 linfo.li_max_ops_per_insn = byte_get (hdrptr, 1);
2662 if (linfo.li_max_ops_per_insn == 0)
2664 warn (_("Invalid maximum operations per insn.\n"));
2669 linfo.li_max_ops_per_insn = 1;
2670 linfo.li_default_is_stmt = byte_get (hdrptr, 1);
2672 linfo.li_line_base = byte_get (hdrptr, 1);
2674 linfo.li_line_range = byte_get (hdrptr, 1);
2676 linfo.li_opcode_base = byte_get (hdrptr, 1);
2679 /* Sign extend the line base field. */
2680 linfo.li_line_base <<= 24;
2681 linfo.li_line_base >>= 24;
2683 /* Find the end of this CU's Line Number Information Block. */
2684 end_of_sequence = data + linfo.li_length + initial_length_size;
2686 reset_state_machine (linfo.li_default_is_stmt);
2688 /* Save a pointer to the contents of the Opcodes table. */
2689 standard_opcodes = hdrptr;
2691 /* Traverse the Directory table just to count entries. */
2692 data = standard_opcodes + linfo.li_opcode_base - 1;
2695 unsigned int n_directories = 0;
2696 unsigned char *ptr_directory_table = data;
2700 data += strlen ((char *) data) + 1;
2704 /* Go through the directory table again to save the directories. */
2705 directory_table = (unsigned char **)
2706 xmalloc (n_directories * sizeof (unsigned char *));
2709 while (*ptr_directory_table != 0)
2711 directory_table[i] = ptr_directory_table;
2712 ptr_directory_table += strlen ((char *) ptr_directory_table) + 1;
2716 /* Skip the NUL at the end of the table. */
2719 /* Traverse the File Name table just to count the entries. */
2722 unsigned int n_files = 0;
2723 unsigned char *ptr_file_name_table = data;
2727 unsigned int bytes_read;
2729 /* Skip Name, directory index, last modification time and length
2731 data += strlen ((char *) data) + 1;
2732 read_leb128 (data, & bytes_read, 0);
2734 read_leb128 (data, & bytes_read, 0);
2736 read_leb128 (data, & bytes_read, 0);
2742 /* Go through the file table again to save the strings. */
2743 file_table = (File_Entry *) xmalloc (n_files * sizeof (File_Entry));
2746 while (*ptr_file_name_table != 0)
2748 unsigned int bytes_read;
2750 file_table[i].name = ptr_file_name_table;
2751 ptr_file_name_table += strlen ((char *) ptr_file_name_table) + 1;
2753 /* We are not interested in directory, time or size. */
2754 file_table[i].directory_index = read_leb128 (ptr_file_name_table,
2756 ptr_file_name_table += bytes_read;
2757 file_table[i].modification_date = read_leb128 (ptr_file_name_table,
2759 ptr_file_name_table += bytes_read;
2760 file_table[i].length = read_leb128 (ptr_file_name_table, & bytes_read, 0);
2761 ptr_file_name_table += bytes_read;
2766 /* Print the Compilation Unit's name and a header. */
2767 if (directory_table == NULL)
2769 printf (_("CU: %s:\n"), file_table[0].name);
2770 printf (_("File name Line number Starting address\n"));
2774 if (do_wide || strlen ((char *) directory_table[0]) < 76)
2776 printf (_("CU: %s/%s:\n"), directory_table[0],
2777 file_table[0].name);
2781 printf (_("%s:\n"), file_table[0].name);
2783 printf (_("File name Line number Starting address\n"));
2787 /* Skip the NUL at the end of the table. */
2790 /* This loop iterates through the Dwarf Line Number Program. */
2791 while (data < end_of_sequence)
2793 unsigned char op_code;
2795 unsigned long int uladv;
2796 unsigned int bytes_read;
2797 int is_special_opcode = 0;
2800 prev_line = state_machine_regs.line;
2802 if (op_code >= linfo.li_opcode_base)
2804 op_code -= linfo.li_opcode_base;
2805 uladv = (op_code / linfo.li_line_range);
2806 if (linfo.li_max_ops_per_insn == 1)
2808 uladv *= linfo.li_min_insn_length;
2809 state_machine_regs.address += uladv;
2813 state_machine_regs.address
2814 += ((state_machine_regs.op_index + uladv)
2815 / linfo.li_max_ops_per_insn)
2816 * linfo.li_min_insn_length;
2817 state_machine_regs.op_index
2818 = (state_machine_regs.op_index + uladv)
2819 % linfo.li_max_ops_per_insn;
2822 adv = (op_code % linfo.li_line_range) + linfo.li_line_base;
2823 state_machine_regs.line += adv;
2824 is_special_opcode = 1;
2826 else switch (op_code)
2828 case DW_LNS_extended_op:
2830 unsigned int ext_op_code_len;
2831 unsigned char ext_op_code;
2832 unsigned char *op_code_data = data;
2834 ext_op_code_len = read_leb128 (op_code_data, &bytes_read, 0);
2835 op_code_data += bytes_read;
2837 if (ext_op_code_len == 0)
2839 warn (_("badly formed extended line op encountered!\n"));
2842 ext_op_code_len += bytes_read;
2843 ext_op_code = *op_code_data++;
2845 switch (ext_op_code)
2847 case DW_LNE_end_sequence:
2848 reset_state_machine (linfo.li_default_is_stmt);
2850 case DW_LNE_set_address:
2851 state_machine_regs.address =
2852 byte_get (op_code_data, ext_op_code_len - bytes_read - 1);
2853 state_machine_regs.op_index = 0;
2855 case DW_LNE_define_file:
2857 unsigned int dir_index = 0;
2859 ++state_machine_regs.last_file_entry;
2860 op_code_data += strlen ((char *) op_code_data) + 1;
2861 dir_index = read_leb128 (op_code_data, & bytes_read, 0);
2862 op_code_data += bytes_read;
2863 read_leb128 (op_code_data, & bytes_read, 0);
2864 op_code_data += bytes_read;
2865 read_leb128 (op_code_data, & bytes_read, 0);
2867 printf (_("%s:\n"), directory_table[dir_index]);
2871 printf (_("UNKNOWN: length %d\n"), ext_op_code_len - bytes_read);
2874 data += ext_op_code_len;
2880 case DW_LNS_advance_pc:
2881 uladv = read_leb128 (data, & bytes_read, 0);
2883 if (linfo.li_max_ops_per_insn == 1)
2885 uladv *= linfo.li_min_insn_length;
2886 state_machine_regs.address += uladv;
2890 state_machine_regs.address
2891 += ((state_machine_regs.op_index + uladv)
2892 / linfo.li_max_ops_per_insn)
2893 * linfo.li_min_insn_length;
2894 state_machine_regs.op_index
2895 = (state_machine_regs.op_index + uladv)
2896 % linfo.li_max_ops_per_insn;
2900 case DW_LNS_advance_line:
2901 adv = read_leb128 (data, & bytes_read, 1);
2903 state_machine_regs.line += adv;
2906 case DW_LNS_set_file:
2907 adv = read_leb128 (data, & bytes_read, 0);
2909 state_machine_regs.file = adv;
2910 if (file_table[state_machine_regs.file - 1].directory_index == 0)
2912 /* If directory index is 0, that means current directory. */
2913 printf (_("\n./%s:[++]\n"),
2914 file_table[state_machine_regs.file - 1].name);
2918 /* The directory index starts counting at 1. */
2919 printf (_("\n%s/%s:\n"),
2920 directory_table[file_table[state_machine_regs.file - 1].directory_index - 1],
2921 file_table[state_machine_regs.file - 1].name);
2925 case DW_LNS_set_column:
2926 uladv = read_leb128 (data, & bytes_read, 0);
2928 state_machine_regs.column = uladv;
2931 case DW_LNS_negate_stmt:
2932 adv = state_machine_regs.is_stmt;
2934 state_machine_regs.is_stmt = adv;
2937 case DW_LNS_set_basic_block:
2938 state_machine_regs.basic_block = 1;
2941 case DW_LNS_const_add_pc:
2942 uladv = ((255 - linfo.li_opcode_base) / linfo.li_line_range);
2943 if (linfo.li_max_ops_per_insn == 1)
2945 uladv *= linfo.li_min_insn_length;
2946 state_machine_regs.address += uladv;
2950 state_machine_regs.address
2951 += ((state_machine_regs.op_index + uladv)
2952 / linfo.li_max_ops_per_insn)
2953 * linfo.li_min_insn_length;
2954 state_machine_regs.op_index
2955 = (state_machine_regs.op_index + uladv)
2956 % linfo.li_max_ops_per_insn;
2960 case DW_LNS_fixed_advance_pc:
2961 uladv = byte_get (data, 2);
2963 state_machine_regs.address += uladv;
2964 state_machine_regs.op_index = 0;
2967 case DW_LNS_set_prologue_end:
2970 case DW_LNS_set_epilogue_begin:
2973 case DW_LNS_set_isa:
2974 uladv = read_leb128 (data, & bytes_read, 0);
2976 printf (_(" Set ISA to %lu\n"), uladv);
2980 printf (_(" Unknown opcode %d with operands: "), op_code);
2982 for (i = standard_opcodes[op_code - 1]; i > 0 ; --i)
2984 printf ("0x%lx%s", read_leb128 (data, &bytes_read, 0),
2985 i == 1 ? "" : ", ");
2992 /* Only Special opcodes, DW_LNS_copy and DW_LNE_end_sequence adds a row
2993 to the DWARF address/line matrix. */
2994 if ((is_special_opcode) || (op_code == DW_LNE_end_sequence)
2995 || (op_code == DW_LNS_copy))
2997 const unsigned int MAX_FILENAME_LENGTH = 35;
2998 char *fileName = (char *)file_table[state_machine_regs.file - 1].name;
2999 char *newFileName = NULL;
3000 size_t fileNameLength = strlen (fileName);
3002 if ((fileNameLength > MAX_FILENAME_LENGTH) && (!do_wide))
3004 newFileName = (char *) xmalloc (MAX_FILENAME_LENGTH + 1);
3005 /* Truncate file name */
3006 strncpy (newFileName,
3007 fileName + fileNameLength - MAX_FILENAME_LENGTH,
3008 MAX_FILENAME_LENGTH + 1);
3012 newFileName = (char *) xmalloc (fileNameLength + 1);
3013 strncpy (newFileName, fileName, fileNameLength + 1);
3016 if (!do_wide || (fileNameLength <= MAX_FILENAME_LENGTH))
3018 if (linfo.li_max_ops_per_insn == 1)
3019 printf (_("%-35s %11d %#18lx\n"), newFileName,
3020 state_machine_regs.line,
3021 state_machine_regs.address);
3023 printf (_("%-35s %11d %#18lx[%d]\n"), newFileName,
3024 state_machine_regs.line,
3025 state_machine_regs.address,
3026 state_machine_regs.op_index);
3030 if (linfo.li_max_ops_per_insn == 1)
3031 printf (_("%s %11d %#18lx\n"), newFileName,
3032 state_machine_regs.line,
3033 state_machine_regs.address);
3035 printf (_("%s %11d %#18lx[%d]\n"), newFileName,
3036 state_machine_regs.line,
3037 state_machine_regs.address,
3038 state_machine_regs.op_index);
3041 if (op_code == DW_LNE_end_sequence)
3049 free (directory_table);
3050 directory_table = NULL;
3058 display_debug_lines (struct dwarf_section *section, void *file)
3060 unsigned char *data = section->start;
3061 unsigned char *end = data + section->size;
3063 int retValDecoded = 1;
3065 if (load_debug_info (file) == 0)
3067 warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"),
3072 if (do_debug_lines == 0)
3073 do_debug_lines |= FLAG_DEBUG_LINES_RAW;
3075 if (do_debug_lines & FLAG_DEBUG_LINES_RAW)
3076 retValRaw = display_debug_lines_raw (section, data, end);
3078 if (do_debug_lines & FLAG_DEBUG_LINES_DECODED)
3079 retValDecoded = display_debug_lines_decoded (section, data, end);
3081 if (!retValRaw || !retValDecoded)
3088 find_debug_info_for_offset (unsigned long offset)
3092 if (num_debug_info_entries == DEBUG_INFO_UNAVAILABLE)
3095 for (i = 0; i < num_debug_info_entries; i++)
3096 if (debug_information[i].cu_offset == offset)
3097 return debug_information + i;
3103 display_debug_pubnames (struct dwarf_section *section,
3104 void *file ATTRIBUTE_UNUSED)
3106 DWARF2_Internal_PubNames names;
3107 unsigned char *start = section->start;
3108 unsigned char *end = start + section->size;
3110 /* It does not matter if this load fails,
3111 we test for that later on. */
3112 load_debug_info (file);
3114 printf (_("Contents of the %s section:\n\n"), section->name);
3118 unsigned char *data;
3119 unsigned long offset;
3120 int offset_size, initial_length_size;
3124 names.pn_length = byte_get (data, 4);
3126 if (names.pn_length == 0xffffffff)
3128 names.pn_length = byte_get (data, 8);
3131 initial_length_size = 12;
3136 initial_length_size = 4;
3139 names.pn_version = byte_get (data, 2);
3142 names.pn_offset = byte_get (data, offset_size);
3143 data += offset_size;
3145 if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE
3146 && num_debug_info_entries > 0
3147 && find_debug_info_for_offset (names.pn_offset) == NULL)
3148 warn (_(".debug_info offset of 0x%lx in %s section does not point to a CU header.\n"),
3149 names.pn_offset, section->name);
3151 names.pn_size = byte_get (data, offset_size);
3152 data += offset_size;
3154 start += names.pn_length + initial_length_size;
3156 if (names.pn_version != 2 && names.pn_version != 3)
3158 static int warned = 0;
3162 warn (_("Only DWARF 2 and 3 pubnames are currently supported\n"));
3169 printf (_(" Length: %ld\n"),
3171 printf (_(" Version: %d\n"),
3173 printf (_(" Offset into .debug_info section: 0x%lx\n"),
3175 printf (_(" Size of area in .debug_info section: %ld\n"),
3178 printf (_("\n Offset\tName\n"));
3182 offset = byte_get (data, offset_size);
3186 data += offset_size;
3187 printf (" %-6lx\t%s\n", offset, data);
3188 data += strlen ((char *) data) + 1;
3191 while (offset != 0);
3199 display_debug_macinfo (struct dwarf_section *section,
3200 void *file ATTRIBUTE_UNUSED)
3202 unsigned char *start = section->start;
3203 unsigned char *end = start + section->size;
3204 unsigned char *curr = start;
3205 unsigned int bytes_read;
3206 enum dwarf_macinfo_record_type op;
3208 printf (_("Contents of the %s section:\n\n"), section->name);
3212 unsigned int lineno;
3215 op = (enum dwarf_macinfo_record_type) *curr;
3220 case DW_MACINFO_start_file:
3222 unsigned int filenum;
3224 lineno = read_leb128 (curr, & bytes_read, 0);
3226 filenum = read_leb128 (curr, & bytes_read, 0);
3229 printf (_(" DW_MACINFO_start_file - lineno: %d filenum: %d\n"),
3234 case DW_MACINFO_end_file:
3235 printf (_(" DW_MACINFO_end_file\n"));
3238 case DW_MACINFO_define:
3239 lineno = read_leb128 (curr, & bytes_read, 0);
3241 string = (char *) curr;
3242 curr += strlen (string) + 1;
3243 printf (_(" DW_MACINFO_define - lineno : %d macro : %s\n"),
3247 case DW_MACINFO_undef:
3248 lineno = read_leb128 (curr, & bytes_read, 0);
3250 string = (char *) curr;
3251 curr += strlen (string) + 1;
3252 printf (_(" DW_MACINFO_undef - lineno : %d macro : %s\n"),
3256 case DW_MACINFO_vendor_ext:
3258 unsigned int constant;
3260 constant = read_leb128 (curr, & bytes_read, 0);
3262 string = (char *) curr;
3263 curr += strlen (string) + 1;
3264 printf (_(" DW_MACINFO_vendor_ext - constant : %d string : %s\n"),
3275 display_debug_abbrev (struct dwarf_section *section,
3276 void *file ATTRIBUTE_UNUSED)
3278 abbrev_entry *entry;
3279 unsigned char *start = section->start;
3280 unsigned char *end = start + section->size;
3282 printf (_("Contents of the %s section:\n\n"), section->name);
3288 start = process_abbrev_section (start, end);
3290 if (first_abbrev == NULL)
3293 printf (_(" Number TAG\n"));
3295 for (entry = first_abbrev; entry; entry = entry->next)
3299 printf (_(" %ld %s [%s]\n"),
3301 get_TAG_name (entry->tag),
3302 entry->children ? _("has children") : _("no children"));
3304 for (attr = entry->first_attr; attr; attr = attr->next)
3305 printf (_(" %-18s %s\n"),
3306 get_AT_name (attr->attribute),
3307 get_FORM_name (attr->form));
3318 display_debug_loc (struct dwarf_section *section, void *file)
3320 unsigned char *start = section->start;
3321 unsigned char *section_end;
3322 unsigned long bytes;
3323 unsigned char *section_begin = start;
3324 unsigned int num_loc_list = 0;
3325 unsigned long last_offset = 0;
3326 unsigned int first = 0;
3329 int seen_first_offset = 0;
3330 int use_debug_info = 1;
3331 unsigned char *next;
3333 bytes = section->size;
3334 section_end = start + bytes;
3338 printf (_("\nThe %s section is empty.\n"), section->name);
3342 if (load_debug_info (file) == 0)
3344 warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"),
3349 /* Check the order of location list in .debug_info section. If
3350 offsets of location lists are in the ascending order, we can
3351 use `debug_information' directly. */
3352 for (i = 0; i < num_debug_info_entries; i++)
3356 num = debug_information [i].num_loc_offsets;
3357 num_loc_list += num;
3359 /* Check if we can use `debug_information' directly. */
3360 if (use_debug_info && num != 0)
3362 if (!seen_first_offset)
3364 /* This is the first location list. */
3365 last_offset = debug_information [i].loc_offsets [0];
3367 seen_first_offset = 1;
3373 for (; j < num; j++)
3376 debug_information [i].loc_offsets [j])
3381 last_offset = debug_information [i].loc_offsets [j];
3386 if (!use_debug_info)
3387 /* FIXME: Should we handle this case? */
3388 error (_("Location lists in .debug_info section aren't in ascending order!\n"));
3390 if (!seen_first_offset)
3391 error (_("No location lists in .debug_info section!\n"));
3393 /* DWARF sections under Mach-O have non-zero addresses. */
3394 if (debug_information [first].num_loc_offsets > 0
3395 && debug_information [first].loc_offsets [0] != section->address)
3396 warn (_("Location lists in %s section start at 0x%lx\n"),
3397 section->name, debug_information [first].loc_offsets [0]);
3399 printf (_("Contents of the %s section:\n\n"), section->name);
3400 printf (_(" Offset Begin End Expression\n"));
3402 seen_first_offset = 0;
3403 for (i = first; i < num_debug_info_entries; i++)
3407 unsigned short length;
3408 unsigned long offset;
3409 unsigned int pointer_size;
3410 unsigned long cu_offset;
3411 unsigned long base_address;
3412 int need_frame_base;
3415 pointer_size = debug_information [i].pointer_size;
3416 cu_offset = debug_information [i].cu_offset;
3418 for (j = 0; j < debug_information [i].num_loc_offsets; j++)
3420 has_frame_base = debug_information [i].have_frame_base [j];
3421 /* DWARF sections under Mach-O have non-zero addresses. */
3422 offset = debug_information [i].loc_offsets [j] - section->address;
3423 next = section_begin + offset;
3424 base_address = debug_information [i].base_address;
3426 if (!seen_first_offset)
3427 seen_first_offset = 1;
3431 warn (_("There is a hole [0x%lx - 0x%lx] in .debug_loc section.\n"),
3432 (unsigned long) (start - section_begin),
3433 (unsigned long) (next - section_begin));
3434 else if (start > next)
3435 warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"),
3436 (unsigned long) (start - section_begin),
3437 (unsigned long) (next - section_begin));
3441 if (offset >= bytes)
3443 warn (_("Offset 0x%lx is bigger than .debug_loc section size.\n"),
3450 if (start + 2 * pointer_size > section_end)
3452 warn (_("Location list starting at offset 0x%lx is not terminated.\n"),
3457 /* Note: we use sign extension here in order to be sure that
3458 we can detect the -1 escape value. Sign extension into the
3459 top 32 bits of a 32-bit address will not affect the values
3460 that we display since we always show hex values, and always
3461 the bottom 32-bits. */
3462 begin = byte_get_signed (start, pointer_size);
3463 start += pointer_size;
3464 end = byte_get_signed (start, pointer_size);
3465 start += pointer_size;
3467 printf (" %8.8lx ", offset);
3469 if (begin == 0 && end == 0)
3471 printf (_("<End of list>\n"));
3475 /* Check base address specifiers. */
3476 if (begin == (dwarf_vma) -1 && end != (dwarf_vma) -1)
3479 print_dwarf_vma (begin, pointer_size);
3480 print_dwarf_vma (end, pointer_size);
3481 printf (_("(base address)\n"));
3485 if (start + 2 > section_end)
3487 warn (_("Location list starting at offset 0x%lx is not terminated.\n"),
3492 length = byte_get (start, 2);
3495 if (start + length > section_end)
3497 warn (_("Location list starting at offset 0x%lx is not terminated.\n"),
3502 print_dwarf_vma (begin + base_address, pointer_size);
3503 print_dwarf_vma (end + base_address, pointer_size);
3506 need_frame_base = decode_location_expression (start,
3509 cu_offset, section);
3512 if (need_frame_base && !has_frame_base)
3513 printf (_(" [without DW_AT_frame_base]"));
3516 fputs (_(" (start == end)"), stdout);
3517 else if (begin > end)
3518 fputs (_(" (start > end)"), stdout);
3527 if (start < section_end)
3528 warn (_("There are %ld unused bytes at the end of section %s\n"),
3529 (long) (section_end - start), section->name);
3535 display_debug_str (struct dwarf_section *section,
3536 void *file ATTRIBUTE_UNUSED)
3538 unsigned char *start = section->start;
3539 unsigned long bytes = section->size;
3540 dwarf_vma addr = section->address;
3544 printf (_("\nThe %s section is empty.\n"), section->name);
3548 printf (_("Contents of the %s section:\n\n"), section->name);
3556 lbytes = (bytes > 16 ? 16 : bytes);
3558 printf (" 0x%8.8lx ", (unsigned long) addr);
3560 for (j = 0; j < 16; j++)
3563 printf ("%2.2x", start[j]);
3571 for (j = 0; j < lbytes; j++)
3574 if (k >= ' ' && k < 0x80)
3593 display_debug_info (struct dwarf_section *section, void *file)
3595 return process_debug_info (section, file, 0, 0);
3599 display_debug_types (struct dwarf_section *section, void *file)
3601 return process_debug_info (section, file, 0, 1);
3605 display_debug_aranges (struct dwarf_section *section,
3606 void *file ATTRIBUTE_UNUSED)
3608 unsigned char *start = section->start;
3609 unsigned char *end = start + section->size;
3611 printf (_("Contents of the %s section:\n\n"), section->name);
3613 /* It does not matter if this load fails,
3614 we test for that later on. */
3615 load_debug_info (file);
3619 unsigned char *hdrptr;
3620 DWARF2_Internal_ARange arange;
3621 unsigned char *addr_ranges;
3624 unsigned char address_size;
3627 int initial_length_size;
3631 arange.ar_length = byte_get (hdrptr, 4);
3634 if (arange.ar_length == 0xffffffff)
3636 arange.ar_length = byte_get (hdrptr, 8);
3639 initial_length_size = 12;
3644 initial_length_size = 4;
3647 arange.ar_version = byte_get (hdrptr, 2);
3650 arange.ar_info_offset = byte_get (hdrptr, offset_size);
3651 hdrptr += offset_size;
3653 if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE
3654 && num_debug_info_entries > 0
3655 && find_debug_info_for_offset (arange.ar_info_offset) == NULL)
3656 warn (_(".debug_info offset of 0x%lx in %s section does not point to a CU header.\n"),
3657 arange.ar_info_offset, section->name);
3659 arange.ar_pointer_size = byte_get (hdrptr, 1);
3662 arange.ar_segment_size = byte_get (hdrptr, 1);
3665 if (arange.ar_version != 2 && arange.ar_version != 3)
3667 warn (_("Only DWARF 2 and 3 aranges are currently supported.\n"));
3671 printf (_(" Length: %ld\n"), arange.ar_length);
3672 printf (_(" Version: %d\n"), arange.ar_version);
3673 printf (_(" Offset into .debug_info: 0x%lx\n"), arange.ar_info_offset);
3674 printf (_(" Pointer Size: %d\n"), arange.ar_pointer_size);
3675 printf (_(" Segment Size: %d\n"), arange.ar_segment_size);
3677 address_size = arange.ar_pointer_size + arange.ar_segment_size;
3679 /* The DWARF spec does not require that the address size be a power
3680 of two, but we do. This will have to change if we ever encounter
3681 an uneven architecture. */
3682 if ((address_size & (address_size - 1)) != 0)
3684 warn (_("Pointer size + Segment size is not a power of two.\n"));
3688 if (address_size > 4)
3689 printf (_("\n Address Length\n"));
3691 printf (_("\n Address Length\n"));
3693 addr_ranges = hdrptr;
3695 /* Must pad to an alignment boundary that is twice the address size. */
3696 excess = (hdrptr - start) % (2 * address_size);
3698 addr_ranges += (2 * address_size) - excess;
3700 start += arange.ar_length + initial_length_size;
3702 while (addr_ranges + 2 * address_size <= start)
3704 address = byte_get (addr_ranges, address_size);
3706 addr_ranges += address_size;
3708 length = byte_get (addr_ranges, address_size);
3710 addr_ranges += address_size;
3713 print_dwarf_vma (address, address_size);
3714 print_dwarf_vma (length, address_size);
3724 /* Each debug_information[x].range_lists[y] gets this representation for
3725 sorting purposes. */
3729 /* The debug_information[x].range_lists[y] value. */
3730 unsigned long ranges_offset;
3732 /* Original debug_information to find parameters of the data. */
3733 debug_info *debug_info_p;
3736 /* Sort struct range_entry in ascending order of its RANGES_OFFSET. */
3739 range_entry_compar (const void *ap, const void *bp)
3741 const struct range_entry *a_re = (const struct range_entry *) ap;
3742 const struct range_entry *b_re = (const struct range_entry *) bp;
3743 const unsigned long a = a_re->ranges_offset;
3744 const unsigned long b = b_re->ranges_offset;
3746 return (a > b) - (b > a);
3750 display_debug_ranges (struct dwarf_section *section,
3751 void *file ATTRIBUTE_UNUSED)
3753 unsigned char *start = section->start;
3754 unsigned char *section_end;
3755 unsigned long bytes;
3756 unsigned char *section_begin = start;
3757 unsigned int num_range_list, i;
3758 struct range_entry *range_entries, *range_entry_fill;
3760 bytes = section->size;
3761 section_end = start + bytes;
3765 printf (_("\nThe %s section is empty.\n"), section->name);
3769 if (load_debug_info (file) == 0)
3771 warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"),
3777 for (i = 0; i < num_debug_info_entries; i++)
3778 num_range_list += debug_information [i].num_range_lists;
3780 if (num_range_list == 0)
3781 error (_("No range lists in .debug_info section!\n"));
3783 range_entries = (struct range_entry *)
3784 xmalloc (sizeof (*range_entries) * num_range_list);
3785 range_entry_fill = range_entries;
3787 for (i = 0; i < num_debug_info_entries; i++)
3789 debug_info *debug_info_p = &debug_information[i];
3792 for (j = 0; j < debug_info_p->num_range_lists; j++)
3794 range_entry_fill->ranges_offset = debug_info_p->range_lists[j];
3795 range_entry_fill->debug_info_p = debug_info_p;
3800 qsort (range_entries, num_range_list, sizeof (*range_entries),
3801 range_entry_compar);
3803 /* DWARF sections under Mach-O have non-zero addresses. */
3804 if (range_entries[0].ranges_offset != section->address)
3805 warn (_("Range lists in %s section start at 0x%lx\n"),
3806 section->name, range_entries[0].ranges_offset);
3808 printf (_("Contents of the %s section:\n\n"), section->name);
3809 printf (_(" Offset Begin End\n"));
3811 for (i = 0; i < num_range_list; i++)
3813 struct range_entry *range_entry = &range_entries[i];
3814 debug_info *debug_info_p = range_entry->debug_info_p;
3815 unsigned int pointer_size;
3816 unsigned long offset;
3817 unsigned char *next;
3818 unsigned long base_address;
3820 pointer_size = debug_info_p->pointer_size;
3822 /* DWARF sections under Mach-O have non-zero addresses. */
3823 offset = range_entry->ranges_offset - section->address;
3824 next = section_begin + offset;
3825 base_address = debug_info_p->base_address;
3830 warn (_("There is a hole [0x%lx - 0x%lx] in %s section.\n"),
3831 (unsigned long) (start - section_begin),
3832 (unsigned long) (next - section_begin), section->name);
3833 else if (start > next)
3834 warn (_("There is an overlap [0x%lx - 0x%lx] in %s section.\n"),
3835 (unsigned long) (start - section_begin),
3836 (unsigned long) (next - section_begin), section->name);
3845 /* Note: we use sign extension here in order to be sure that
3846 we can detect the -1 escape value. Sign extension into the
3847 top 32 bits of a 32-bit address will not affect the values
3848 that we display since we always show hex values, and always
3849 the bottom 32-bits. */
3850 begin = byte_get_signed (start, pointer_size);
3851 start += pointer_size;
3852 end = byte_get_signed (start, pointer_size);
3853 start += pointer_size;
3855 printf (" %8.8lx ", offset);
3857 if (begin == 0 && end == 0)
3859 printf (_("<End of list>\n"));
3863 /* Check base address specifiers. */
3864 if (begin == (dwarf_vma) -1 && end != (dwarf_vma) -1)
3867 print_dwarf_vma (begin, pointer_size);
3868 print_dwarf_vma (end, pointer_size);
3869 printf ("(base address)\n");
3873 print_dwarf_vma (begin + base_address, pointer_size);
3874 print_dwarf_vma (end + base_address, pointer_size);
3877 fputs (_("(start == end)"), stdout);
3878 else if (begin > end)
3879 fputs (_("(start > end)"), stdout);
3886 free (range_entries);
3891 typedef struct Frame_Chunk
3893 struct Frame_Chunk *next;
3894 unsigned char *chunk_start;
3896 /* DW_CFA_{undefined,same_value,offset,register,unreferenced} */
3897 short int *col_type;
3900 unsigned int code_factor;
3902 unsigned long pc_begin;
3903 unsigned long pc_range;
3907 unsigned char fde_encoding;
3908 unsigned char cfa_exp;
3909 unsigned char ptr_size;
3910 unsigned char segment_size;
3914 static const char *const *dwarf_regnames;
3915 static unsigned int dwarf_regnames_count;
3917 /* A marker for a col_type that means this column was never referenced
3918 in the frame info. */
3919 #define DW_CFA_unreferenced (-1)
3921 /* Return 0 if not more space is needed, 1 if more space is needed,
3922 -1 for invalid reg. */
3925 frame_need_space (Frame_Chunk *fc, unsigned int reg)
3927 int prev = fc->ncols;
3929 if (reg < (unsigned int) fc->ncols)
3932 if (dwarf_regnames_count
3933 && reg > dwarf_regnames_count)
3936 fc->ncols = reg + 1;
3937 fc->col_type = (short int *) xcrealloc (fc->col_type, fc->ncols,
3938 sizeof (short int));
3939 fc->col_offset = (int *) xcrealloc (fc->col_offset, fc->ncols, sizeof (int));
3941 while (prev < fc->ncols)
3943 fc->col_type[prev] = DW_CFA_unreferenced;
3944 fc->col_offset[prev] = 0;
3950 static const char *const dwarf_regnames_i386[] =
3952 "eax", "ecx", "edx", "ebx",
3953 "esp", "ebp", "esi", "edi",
3954 "eip", "eflags", NULL,
3955 "st0", "st1", "st2", "st3",
3956 "st4", "st5", "st6", "st7",
3958 "xmm0", "xmm1", "xmm2", "xmm3",
3959 "xmm4", "xmm5", "xmm6", "xmm7",
3960 "mm0", "mm1", "mm2", "mm3",
3961 "mm4", "mm5", "mm6", "mm7",
3962 "fcw", "fsw", "mxcsr",
3963 "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL,
3967 static const char *const dwarf_regnames_x86_64[] =
3969 "rax", "rdx", "rcx", "rbx",
3970 "rsi", "rdi", "rbp", "rsp",
3971 "r8", "r9", "r10", "r11",
3972 "r12", "r13", "r14", "r15",
3974 "xmm0", "xmm1", "xmm2", "xmm3",
3975 "xmm4", "xmm5", "xmm6", "xmm7",
3976 "xmm8", "xmm9", "xmm10", "xmm11",
3977 "xmm12", "xmm13", "xmm14", "xmm15",
3978 "st0", "st1", "st2", "st3",
3979 "st4", "st5", "st6", "st7",
3980 "mm0", "mm1", "mm2", "mm3",
3981 "mm4", "mm5", "mm6", "mm7",
3983 "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL,
3984 "fs.base", "gs.base", NULL, NULL,
3986 "mxcsr", "fcw", "fsw"
3990 init_dwarf_regnames (unsigned int e_machine)
3996 dwarf_regnames = dwarf_regnames_i386;
3997 dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_i386);
4001 dwarf_regnames = dwarf_regnames_x86_64;
4002 dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_x86_64);
4011 regname (unsigned int regno, int row)
4013 static char reg[64];
4015 && regno < dwarf_regnames_count
4016 && dwarf_regnames [regno] != NULL)
4019 return dwarf_regnames [regno];
4020 snprintf (reg, sizeof (reg), "r%d (%s)", regno,
4021 dwarf_regnames [regno]);
4024 snprintf (reg, sizeof (reg), "r%d", regno);
4029 frame_display_row (Frame_Chunk *fc, int *need_col_headers, int *max_regs)
4034 if (*max_regs < fc->ncols)
4035 *max_regs = fc->ncols;
4037 if (*need_col_headers)
4039 static const char *sloc = " LOC";
4041 *need_col_headers = 0;
4043 printf ("%-*s CFA ", eh_addr_size * 2, sloc);
4045 for (r = 0; r < *max_regs; r++)
4046 if (fc->col_type[r] != DW_CFA_unreferenced)
4051 printf ("%-5s ", regname (r, 1));
4057 printf ("%0*lx ", eh_addr_size * 2, fc->pc_begin);
4059 strcpy (tmp, "exp");
4061 sprintf (tmp, "%s%+d", regname (fc->cfa_reg, 1), fc->cfa_offset);
4062 printf ("%-8s ", tmp);
4064 for (r = 0; r < fc->ncols; r++)
4066 if (fc->col_type[r] != DW_CFA_unreferenced)
4068 switch (fc->col_type[r])
4070 case DW_CFA_undefined:
4073 case DW_CFA_same_value:
4077 sprintf (tmp, "c%+d", fc->col_offset[r]);
4079 case DW_CFA_val_offset:
4080 sprintf (tmp, "v%+d", fc->col_offset[r]);
4082 case DW_CFA_register:
4083 sprintf (tmp, "%s", regname (fc->col_offset[r], 0));
4085 case DW_CFA_expression:
4086 strcpy (tmp, "exp");
4088 case DW_CFA_val_expression:
4089 strcpy (tmp, "vexp");
4092 strcpy (tmp, "n/a");
4095 printf ("%-5s ", tmp);
4101 #define GET(N) byte_get (start, N); start += N
4102 #define LEB() read_leb128 (start, & length_return, 0); start += length_return
4103 #define SLEB() read_leb128 (start, & length_return, 1); start += length_return
4106 display_debug_frames (struct dwarf_section *section,
4107 void *file ATTRIBUTE_UNUSED)
4109 unsigned char *start = section->start;
4110 unsigned char *end = start + section->size;
4111 unsigned char *section_start = start;
4112 Frame_Chunk *chunks = 0;
4113 Frame_Chunk *remembered_state = 0;
4115 int is_eh = strcmp (section->name, ".eh_frame") == 0;
4116 unsigned int length_return;
4118 const char *bad_reg = _("bad register: ");
4119 int saved_eh_addr_size = eh_addr_size;
4121 printf (_("Contents of the %s section:\n"), section->name);
4125 unsigned char *saved_start;
4126 unsigned char *block_end;
4127 unsigned long length;
4128 unsigned long cie_id;
4131 int need_col_headers = 1;
4132 unsigned char *augmentation_data = NULL;
4133 unsigned long augmentation_data_len = 0;
4134 int encoded_ptr_size = saved_eh_addr_size;
4136 int initial_length_size;
4138 saved_start = start;
4139 length = byte_get (start, 4); start += 4;
4143 printf ("\n%08lx ZERO terminator\n\n",
4144 (unsigned long)(saved_start - section_start));
4148 if (length == 0xffffffff)
4150 length = byte_get (start, 8);
4153 initial_length_size = 12;
4158 initial_length_size = 4;
4161 block_end = saved_start + length + initial_length_size;
4162 if (block_end > end)
4164 warn ("Invalid length %#08lx in FDE at %#08lx\n",
4165 length, (unsigned long)(saved_start - section_start));
4168 cie_id = byte_get (start, offset_size); start += offset_size;
4170 if (is_eh ? (cie_id == 0) : (cie_id == DW_CIE_ID))
4174 fc = (Frame_Chunk *) xmalloc (sizeof (Frame_Chunk));
4175 memset (fc, 0, sizeof (Frame_Chunk));
4179 fc->chunk_start = saved_start;
4181 fc->col_type = (short int *) xmalloc (sizeof (short int));
4182 fc->col_offset = (int *) xmalloc (sizeof (int));
4183 frame_need_space (fc, max_regs - 1);
4187 fc->augmentation = (char *) start;
4188 start = (unsigned char *) strchr ((char *) start, '\0') + 1;
4190 if (strcmp (fc->augmentation, "eh") == 0)
4191 start += eh_addr_size;
4195 fc->ptr_size = GET (1);
4196 fc->segment_size = GET (1);
4197 eh_addr_size = fc->ptr_size;
4201 fc->ptr_size = eh_addr_size;
4202 fc->segment_size = 0;
4204 fc->code_factor = LEB ();
4205 fc->data_factor = SLEB ();
4215 if (fc->augmentation[0] == 'z')
4217 augmentation_data_len = LEB ();
4218 augmentation_data = start;
4219 start += augmentation_data_len;
4223 if (do_debug_frames_interp)
4224 printf ("\n%08lx %08lx %08lx CIE \"%s\" cf=%d df=%d ra=%d\n",
4225 (unsigned long)(saved_start - section_start), length, cie_id,
4226 fc->augmentation, fc->code_factor, fc->data_factor,
4230 printf ("\n%08lx %08lx %08lx CIE\n",
4231 (unsigned long)(saved_start - section_start), length, cie_id);
4232 printf (" Version: %d\n", version);
4233 printf (" Augmentation: \"%s\"\n", fc->augmentation);
4236 printf (" Pointer Size: %u\n", fc->ptr_size);
4237 printf (" Segment Size: %u\n", fc->segment_size);
4239 printf (" Code alignment factor: %u\n", fc->code_factor);
4240 printf (" Data alignment factor: %d\n", fc->data_factor);
4241 printf (" Return address column: %d\n", fc->ra);
4243 if (augmentation_data_len)
4246 printf (" Augmentation data: ");
4247 for (i = 0; i < augmentation_data_len; ++i)
4248 printf (" %02x", augmentation_data[i]);
4254 if (augmentation_data_len)
4256 unsigned char *p, *q;
4257 p = (unsigned char *) fc->augmentation + 1;
4258 q = augmentation_data;
4265 q += 1 + size_of_encoded_value (*q);
4267 fc->fde_encoding = *q++;
4275 if (fc->fde_encoding)
4276 encoded_ptr_size = size_of_encoded_value (fc->fde_encoding);
4279 frame_need_space (fc, fc->ra);
4283 unsigned char *look_for;
4284 static Frame_Chunk fde_fc;
4285 unsigned long segment_selector;
4288 memset (fc, 0, sizeof (Frame_Chunk));
4290 look_for = is_eh ? start - 4 - cie_id : section_start + cie_id;
4292 for (cie = chunks; cie ; cie = cie->next)
4293 if (cie->chunk_start == look_for)
4298 warn ("Invalid CIE pointer %#08lx in FDE at %#08lx\n",
4299 cie_id, (unsigned long)(saved_start - section_start));
4301 fc->col_type = (short int *) xmalloc (sizeof (short int));
4302 fc->col_offset = (int *) xmalloc (sizeof (int));
4303 frame_need_space (fc, max_regs - 1);
4305 fc->augmentation = "";
4306 fc->fde_encoding = 0;
4307 fc->ptr_size = eh_addr_size;
4308 fc->segment_size = 0;
4312 fc->ncols = cie->ncols;
4313 fc->col_type = (short int *) xcmalloc (fc->ncols, sizeof (short int));
4314 fc->col_offset = (int *) xcmalloc (fc->ncols, sizeof (int));
4315 memcpy (fc->col_type, cie->col_type, fc->ncols * sizeof (short int));
4316 memcpy (fc->col_offset, cie->col_offset, fc->ncols * sizeof (int));
4317 fc->augmentation = cie->augmentation;
4318 fc->ptr_size = cie->ptr_size;
4319 eh_addr_size = cie->ptr_size;
4320 fc->segment_size = cie->segment_size;
4321 fc->code_factor = cie->code_factor;
4322 fc->data_factor = cie->data_factor;
4323 fc->cfa_reg = cie->cfa_reg;
4324 fc->cfa_offset = cie->cfa_offset;
4326 frame_need_space (fc, max_regs - 1);
4327 fc->fde_encoding = cie->fde_encoding;
4330 if (fc->fde_encoding)
4331 encoded_ptr_size = size_of_encoded_value (fc->fde_encoding);
4333 segment_selector = 0;
4334 if (fc->segment_size)
4336 segment_selector = byte_get (start, fc->segment_size);
4337 start += fc->segment_size;
4339 fc->pc_begin = get_encoded_value (start, fc->fde_encoding);
4340 if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel)
4341 fc->pc_begin += section->address + (start - section_start);
4342 start += encoded_ptr_size;
4343 fc->pc_range = byte_get (start, encoded_ptr_size);
4344 start += encoded_ptr_size;
4346 if (cie->augmentation[0] == 'z')
4348 augmentation_data_len = LEB ();
4349 augmentation_data = start;
4350 start += augmentation_data_len;
4353 printf ("\n%08lx %08lx %08lx FDE cie=%08lx pc=",
4354 (unsigned long)(saved_start - section_start), length, cie_id,
4355 (unsigned long)(cie->chunk_start - section_start));
4356 if (fc->segment_size)
4357 printf ("%04lx:", segment_selector);
4358 printf ("%08lx..%08lx\n", fc->pc_begin, fc->pc_begin + fc->pc_range);
4359 if (! do_debug_frames_interp && augmentation_data_len)
4363 printf (" Augmentation data: ");
4364 for (i = 0; i < augmentation_data_len; ++i)
4365 printf (" %02x", augmentation_data[i]);
4371 /* At this point, fc is the current chunk, cie (if any) is set, and
4372 we're about to interpret instructions for the chunk. */
4373 /* ??? At present we need to do this always, since this sizes the
4374 fc->col_type and fc->col_offset arrays, which we write into always.
4375 We should probably split the interpreted and non-interpreted bits
4376 into two different routines, since there's so much that doesn't
4377 really overlap between them. */
4378 if (1 || do_debug_frames_interp)
4380 /* Start by making a pass over the chunk, allocating storage
4381 and taking note of what registers are used. */
4382 unsigned char *tmp = start;
4384 while (start < block_end)
4387 unsigned long reg, temp;
4394 /* Warning: if you add any more cases to this switch, be
4395 sure to add them to the corresponding switch below. */
4398 case DW_CFA_advance_loc:
4402 if (frame_need_space (fc, opa) >= 0)
4403 fc->col_type[opa] = DW_CFA_undefined;
4405 case DW_CFA_restore:
4406 if (frame_need_space (fc, opa) >= 0)
4407 fc->col_type[opa] = DW_CFA_undefined;
4409 case DW_CFA_set_loc:
4410 start += encoded_ptr_size;
4412 case DW_CFA_advance_loc1:
4415 case DW_CFA_advance_loc2:
4418 case DW_CFA_advance_loc4:
4421 case DW_CFA_offset_extended:
4422 case DW_CFA_val_offset:
4423 reg = LEB (); LEB ();
4424 if (frame_need_space (fc, reg) >= 0)
4425 fc->col_type[reg] = DW_CFA_undefined;
4427 case DW_CFA_restore_extended:
4429 frame_need_space (fc, reg);
4430 if (frame_need_space (fc, reg) >= 0)
4431 fc->col_type[reg] = DW_CFA_undefined;
4433 case DW_CFA_undefined:
4435 if (frame_need_space (fc, reg) >= 0)
4436 fc->col_type[reg] = DW_CFA_undefined;
4438 case DW_CFA_same_value:
4440 if (frame_need_space (fc, reg) >= 0)
4441 fc->col_type[reg] = DW_CFA_undefined;
4443 case DW_CFA_register:
4444 reg = LEB (); LEB ();
4445 if (frame_need_space (fc, reg) >= 0)
4446 fc->col_type[reg] = DW_CFA_undefined;
4448 case DW_CFA_def_cfa:
4451 case DW_CFA_def_cfa_register:
4454 case DW_CFA_def_cfa_offset:
4457 case DW_CFA_def_cfa_expression:
4461 case DW_CFA_expression:
4462 case DW_CFA_val_expression:
4466 if (frame_need_space (fc, reg) >= 0)
4467 fc->col_type[reg] = DW_CFA_undefined;
4469 case DW_CFA_offset_extended_sf:
4470 case DW_CFA_val_offset_sf:
4471 reg = LEB (); SLEB ();
4472 if (frame_need_space (fc, reg) >= 0)
4473 fc->col_type[reg] = DW_CFA_undefined;
4475 case DW_CFA_def_cfa_sf:
4478 case DW_CFA_def_cfa_offset_sf:
4481 case DW_CFA_MIPS_advance_loc8:
4484 case DW_CFA_GNU_args_size:
4487 case DW_CFA_GNU_negative_offset_extended:
4488 reg = LEB (); LEB ();
4489 if (frame_need_space (fc, reg) >= 0)
4490 fc->col_type[reg] = DW_CFA_undefined;
4499 /* Now we know what registers are used, make a second pass over
4500 the chunk, this time actually printing out the info. */
4502 while (start < block_end)
4505 unsigned long ul, reg, roffs;
4508 const char *reg_prefix = "";
4515 /* Warning: if you add any more cases to this switch, be
4516 sure to add them to the corresponding switch above. */
4519 case DW_CFA_advance_loc:
4520 if (do_debug_frames_interp)
4521 frame_display_row (fc, &need_col_headers, &max_regs);
4523 printf (" DW_CFA_advance_loc: %d to %08lx\n",
4524 opa * fc->code_factor,
4525 fc->pc_begin + opa * fc->code_factor);
4526 fc->pc_begin += opa * fc->code_factor;
4531 if (opa >= (unsigned int) fc->ncols)
4532 reg_prefix = bad_reg;
4533 if (! do_debug_frames_interp || *reg_prefix != '\0')
4534 printf (" DW_CFA_offset: %s%s at cfa%+ld\n",
4535 reg_prefix, regname (opa, 0),
4536 roffs * fc->data_factor);
4537 if (*reg_prefix == '\0')
4539 fc->col_type[opa] = DW_CFA_offset;
4540 fc->col_offset[opa] = roffs * fc->data_factor;
4544 case DW_CFA_restore:
4545 if (opa >= (unsigned int) cie->ncols
4546 || opa >= (unsigned int) fc->ncols)
4547 reg_prefix = bad_reg;
4548 if (! do_debug_frames_interp || *reg_prefix != '\0')
4549 printf (" DW_CFA_restore: %s%s\n",
4550 reg_prefix, regname (opa, 0));
4551 if (*reg_prefix == '\0')
4553 fc->col_type[opa] = cie->col_type[opa];
4554 fc->col_offset[opa] = cie->col_offset[opa];
4558 case DW_CFA_set_loc:
4559 vma = get_encoded_value (start, fc->fde_encoding);
4560 if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel)
4561 vma += section->address + (start - section_start);
4562 start += encoded_ptr_size;
4563 if (do_debug_frames_interp)
4564 frame_display_row (fc, &need_col_headers, &max_regs);
4566 printf (" DW_CFA_set_loc: %08lx\n", (unsigned long)vma);
4570 case DW_CFA_advance_loc1:
4571 ofs = byte_get (start, 1); start += 1;
4572 if (do_debug_frames_interp)
4573 frame_display_row (fc, &need_col_headers, &max_regs);
4575 printf (" DW_CFA_advance_loc1: %ld to %08lx\n",
4576 ofs * fc->code_factor,
4577 fc->pc_begin + ofs * fc->code_factor);
4578 fc->pc_begin += ofs * fc->code_factor;
4581 case DW_CFA_advance_loc2:
4582 ofs = byte_get (start, 2); start += 2;
4583 if (do_debug_frames_interp)
4584 frame_display_row (fc, &need_col_headers, &max_regs);
4586 printf (" DW_CFA_advance_loc2: %ld to %08lx\n",
4587 ofs * fc->code_factor,
4588 fc->pc_begin + ofs * fc->code_factor);
4589 fc->pc_begin += ofs * fc->code_factor;
4592 case DW_CFA_advance_loc4:
4593 ofs = byte_get (start, 4); start += 4;
4594 if (do_debug_frames_interp)
4595 frame_display_row (fc, &need_col_headers, &max_regs);
4597 printf (" DW_CFA_advance_loc4: %ld to %08lx\n",
4598 ofs * fc->code_factor,
4599 fc->pc_begin + ofs * fc->code_factor);
4600 fc->pc_begin += ofs * fc->code_factor;
4603 case DW_CFA_offset_extended:
4606 if (reg >= (unsigned int) fc->ncols)
4607 reg_prefix = bad_reg;
4608 if (! do_debug_frames_interp || *reg_prefix != '\0')
4609 printf (" DW_CFA_offset_extended: %s%s at cfa%+ld\n",
4610 reg_prefix, regname (reg, 0),
4611 roffs * fc->data_factor);
4612 if (*reg_prefix == '\0')
4614 fc->col_type[reg] = DW_CFA_offset;
4615 fc->col_offset[reg] = roffs * fc->data_factor;
4619 case DW_CFA_val_offset:
4622 if (reg >= (unsigned int) fc->ncols)
4623 reg_prefix = bad_reg;
4624 if (! do_debug_frames_interp || *reg_prefix != '\0')
4625 printf (" DW_CFA_val_offset: %s%s at cfa%+ld\n",
4626 reg_prefix, regname (reg, 0),
4627 roffs * fc->data_factor);
4628 if (*reg_prefix == '\0')
4630 fc->col_type[reg] = DW_CFA_val_offset;
4631 fc->col_offset[reg] = roffs * fc->data_factor;
4635 case DW_CFA_restore_extended:
4637 if (reg >= (unsigned int) cie->ncols
4638 || reg >= (unsigned int) fc->ncols)
4639 reg_prefix = bad_reg;
4640 if (! do_debug_frames_interp || *reg_prefix != '\0')
4641 printf (" DW_CFA_restore_extended: %s%s\n",
4642 reg_prefix, regname (reg, 0));
4643 if (*reg_prefix == '\0')
4645 fc->col_type[reg] = cie->col_type[reg];
4646 fc->col_offset[reg] = cie->col_offset[reg];
4650 case DW_CFA_undefined:
4652 if (reg >= (unsigned int) fc->ncols)
4653 reg_prefix = bad_reg;
4654 if (! do_debug_frames_interp || *reg_prefix != '\0')
4655 printf (" DW_CFA_undefined: %s%s\n",
4656 reg_prefix, regname (reg, 0));
4657 if (*reg_prefix == '\0')
4659 fc->col_type[reg] = DW_CFA_undefined;
4660 fc->col_offset[reg] = 0;
4664 case DW_CFA_same_value:
4666 if (reg >= (unsigned int) fc->ncols)
4667 reg_prefix = bad_reg;
4668 if (! do_debug_frames_interp || *reg_prefix != '\0')
4669 printf (" DW_CFA_same_value: %s%s\n",
4670 reg_prefix, regname (reg, 0));
4671 if (*reg_prefix == '\0')
4673 fc->col_type[reg] = DW_CFA_same_value;
4674 fc->col_offset[reg] = 0;
4678 case DW_CFA_register:
4681 if (reg >= (unsigned int) fc->ncols)
4682 reg_prefix = bad_reg;
4683 if (! do_debug_frames_interp || *reg_prefix != '\0')
4685 printf (" DW_CFA_register: %s%s in ",
4686 reg_prefix, regname (reg, 0));
4687 puts (regname (roffs, 0));
4689 if (*reg_prefix == '\0')
4691 fc->col_type[reg] = DW_CFA_register;
4692 fc->col_offset[reg] = roffs;
4696 case DW_CFA_remember_state:
4697 if (! do_debug_frames_interp)
4698 printf (" DW_CFA_remember_state\n");
4699 rs = (Frame_Chunk *) xmalloc (sizeof (Frame_Chunk));
4700 rs->ncols = fc->ncols;
4701 rs->col_type = (short int *) xcmalloc (rs->ncols,
4702 sizeof (short int));
4703 rs->col_offset = (int *) xcmalloc (rs->ncols, sizeof (int));
4704 memcpy (rs->col_type, fc->col_type, rs->ncols);
4705 memcpy (rs->col_offset, fc->col_offset, rs->ncols * sizeof (int));
4706 rs->next = remembered_state;
4707 remembered_state = rs;
4710 case DW_CFA_restore_state:
4711 if (! do_debug_frames_interp)
4712 printf (" DW_CFA_restore_state\n");
4713 rs = remembered_state;
4716 remembered_state = rs->next;
4717 frame_need_space (fc, rs->ncols - 1);
4718 memcpy (fc->col_type, rs->col_type, rs->ncols);
4719 memcpy (fc->col_offset, rs->col_offset,
4720 rs->ncols * sizeof (int));
4721 free (rs->col_type);
4722 free (rs->col_offset);
4725 else if (do_debug_frames_interp)
4726 printf ("Mismatched DW_CFA_restore_state\n");
4729 case DW_CFA_def_cfa:
4730 fc->cfa_reg = LEB ();
4731 fc->cfa_offset = LEB ();
4733 if (! do_debug_frames_interp)
4734 printf (" DW_CFA_def_cfa: %s ofs %d\n",
4735 regname (fc->cfa_reg, 0), fc->cfa_offset);
4738 case DW_CFA_def_cfa_register:
4739 fc->cfa_reg = LEB ();
4741 if (! do_debug_frames_interp)
4742 printf (" DW_CFA_def_cfa_register: %s\n",
4743 regname (fc->cfa_reg, 0));
4746 case DW_CFA_def_cfa_offset:
4747 fc->cfa_offset = LEB ();
4748 if (! do_debug_frames_interp)
4749 printf (" DW_CFA_def_cfa_offset: %d\n", fc->cfa_offset);
4753 if (! do_debug_frames_interp)
4754 printf (" DW_CFA_nop\n");
4757 case DW_CFA_def_cfa_expression:
4759 if (! do_debug_frames_interp)
4761 printf (" DW_CFA_def_cfa_expression (");
4762 decode_location_expression (start, eh_addr_size, ul, 0,
4770 case DW_CFA_expression:
4773 if (reg >= (unsigned int) fc->ncols)
4774 reg_prefix = bad_reg;
4775 if (! do_debug_frames_interp || *reg_prefix != '\0')
4777 printf (" DW_CFA_expression: %s%s (",
4778 reg_prefix, regname (reg, 0));
4779 decode_location_expression (start, eh_addr_size,
4783 if (*reg_prefix == '\0')
4784 fc->col_type[reg] = DW_CFA_expression;
4788 case DW_CFA_val_expression:
4791 if (reg >= (unsigned int) fc->ncols)
4792 reg_prefix = bad_reg;
4793 if (! do_debug_frames_interp || *reg_prefix != '\0')
4795 printf (" DW_CFA_val_expression: %s%s (",
4796 reg_prefix, regname (reg, 0));
4797 decode_location_expression (start, eh_addr_size, ul, 0,
4801 if (*reg_prefix == '\0')
4802 fc->col_type[reg] = DW_CFA_val_expression;
4806 case DW_CFA_offset_extended_sf:
4809 if (frame_need_space (fc, reg) < 0)
4810 reg_prefix = bad_reg;
4811 if (! do_debug_frames_interp || *reg_prefix != '\0')
4812 printf (" DW_CFA_offset_extended_sf: %s%s at cfa%+ld\n",
4813 reg_prefix, regname (reg, 0),
4814 l * fc->data_factor);
4815 if (*reg_prefix == '\0')
4817 fc->col_type[reg] = DW_CFA_offset;
4818 fc->col_offset[reg] = l * fc->data_factor;
4822 case DW_CFA_val_offset_sf:
4825 if (frame_need_space (fc, reg) < 0)
4826 reg_prefix = bad_reg;
4827 if (! do_debug_frames_interp || *reg_prefix != '\0')
4828 printf (" DW_CFA_val_offset_sf: %s%s at cfa%+ld\n",
4829 reg_prefix, regname (reg, 0),
4830 l * fc->data_factor);
4831 if (*reg_prefix == '\0')
4833 fc->col_type[reg] = DW_CFA_val_offset;
4834 fc->col_offset[reg] = l * fc->data_factor;
4838 case DW_CFA_def_cfa_sf:
4839 fc->cfa_reg = LEB ();
4840 fc->cfa_offset = SLEB ();
4841 fc->cfa_offset = fc->cfa_offset * fc->data_factor;
4843 if (! do_debug_frames_interp)
4844 printf (" DW_CFA_def_cfa_sf: %s ofs %d\n",
4845 regname (fc->cfa_reg, 0), fc->cfa_offset);
4848 case DW_CFA_def_cfa_offset_sf:
4849 fc->cfa_offset = SLEB ();
4850 fc->cfa_offset = fc->cfa_offset * fc->data_factor;
4851 if (! do_debug_frames_interp)
4852 printf (" DW_CFA_def_cfa_offset_sf: %d\n", fc->cfa_offset);
4855 case DW_CFA_MIPS_advance_loc8:
4856 ofs = byte_get (start, 8); start += 8;
4857 if (do_debug_frames_interp)
4858 frame_display_row (fc, &need_col_headers, &max_regs);
4860 printf (" DW_CFA_MIPS_advance_loc8: %ld to %08lx\n",
4861 ofs * fc->code_factor,
4862 fc->pc_begin + ofs * fc->code_factor);
4863 fc->pc_begin += ofs * fc->code_factor;
4866 case DW_CFA_GNU_window_save:
4867 if (! do_debug_frames_interp)
4868 printf (" DW_CFA_GNU_window_save\n");
4871 case DW_CFA_GNU_args_size:
4873 if (! do_debug_frames_interp)
4874 printf (" DW_CFA_GNU_args_size: %ld\n", ul);
4877 case DW_CFA_GNU_negative_offset_extended:
4880 if (frame_need_space (fc, reg) < 0)
4881 reg_prefix = bad_reg;
4882 if (! do_debug_frames_interp || *reg_prefix != '\0')
4883 printf (" DW_CFA_GNU_negative_offset_extended: %s%s at cfa%+ld\n",
4884 reg_prefix, regname (reg, 0),
4885 l * fc->data_factor);
4886 if (*reg_prefix == '\0')
4888 fc->col_type[reg] = DW_CFA_offset;
4889 fc->col_offset[reg] = l * fc->data_factor;
4894 if (op >= DW_CFA_lo_user && op <= DW_CFA_hi_user)
4895 printf (_(" DW_CFA_??? (User defined call frame op: %#x)\n"), op);
4897 warn (_("unsupported or unknown Dwarf Call Frame Instruction number: %#x\n"), op);
4902 if (do_debug_frames_interp)
4903 frame_display_row (fc, &need_col_headers, &max_regs);
4906 eh_addr_size = saved_eh_addr_size;
4919 display_debug_not_supported (struct dwarf_section *section,
4920 void *file ATTRIBUTE_UNUSED)
4922 printf (_("Displaying the debug contents of section %s is not yet supported.\n"),
4929 cmalloc (size_t nmemb, size_t size)
4931 /* Check for overflow. */
4932 if (nmemb >= ~(size_t) 0 / size)
4935 return malloc (nmemb * size);
4939 xcmalloc (size_t nmemb, size_t size)
4941 /* Check for overflow. */
4942 if (nmemb >= ~(size_t) 0 / size)
4945 return xmalloc (nmemb * size);
4949 xcrealloc (void *ptr, size_t nmemb, size_t size)
4951 /* Check for overflow. */
4952 if (nmemb >= ~(size_t) 0 / size)
4955 return xrealloc (ptr, nmemb * size);
4959 error (const char *message, ...)
4963 va_start (args, message);
4964 fprintf (stderr, _("%s: Error: "), program_name);
4965 vfprintf (stderr, message, args);
4970 warn (const char *message, ...)
4974 va_start (args, message);
4975 fprintf (stderr, _("%s: Warning: "), program_name);
4976 vfprintf (stderr, message, args);
4981 free_debug_memory (void)
4987 for (i = 0; i < max; i++)
4988 free_debug_section ((enum dwarf_section_display_enum) i);
4990 if (debug_information != NULL)
4992 if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE)
4994 for (i = 0; i < num_debug_info_entries; i++)
4996 if (!debug_information [i].max_loc_offsets)
4998 free (debug_information [i].loc_offsets);
4999 free (debug_information [i].have_frame_base);
5001 if (!debug_information [i].max_range_lists)
5002 free (debug_information [i].range_lists);
5006 free (debug_information);
5007 debug_information = NULL;
5008 num_debug_info_entries = 0;
5013 dwarf_select_sections_by_names (const char *names)
5017 const char * option;
5021 debug_dump_long_opts;
5023 static const debug_dump_long_opts opts_table [] =
5025 /* Please keep this table alpha- sorted. */
5026 { "Ranges", & do_debug_ranges, 1 },
5027 { "abbrev", & do_debug_abbrevs, 1 },
5028 { "aranges", & do_debug_aranges, 1 },
5029 { "frames", & do_debug_frames, 1 },
5030 { "frames-interp", & do_debug_frames_interp, 1 },
5031 { "info", & do_debug_info, 1 },
5032 { "line", & do_debug_lines, FLAG_DEBUG_LINES_RAW }, /* For backwards compatibility. */
5033 { "rawline", & do_debug_lines, FLAG_DEBUG_LINES_RAW },
5034 { "decodedline", & do_debug_lines, FLAG_DEBUG_LINES_DECODED },
5035 { "loc", & do_debug_loc, 1 },
5036 { "macro", & do_debug_macinfo, 1 },
5037 { "pubnames", & do_debug_pubnames, 1 },
5038 { "pubtypes", & do_debug_pubtypes, 1 },
5039 /* This entry is for compatability
5040 with earlier versions of readelf. */
5041 { "ranges", & do_debug_aranges, 1 },
5042 { "str", & do_debug_str, 1 },
5051 const debug_dump_long_opts * entry;
5053 for (entry = opts_table; entry->option; entry++)
5055 size_t len = strlen (entry->option);
5057 if (strncmp (p, entry->option, len) == 0
5058 && (p[len] == ',' || p[len] == '\0'))
5060 * entry->variable |= entry->val;
5062 /* The --debug-dump=frames-interp option also
5063 enables the --debug-dump=frames option. */
5064 if (do_debug_frames_interp)
5065 do_debug_frames = 1;
5072 if (entry->option == NULL)
5074 warn (_("Unrecognized debug option '%s'\n"), p);
5075 p = strchr (p, ',');
5086 dwarf_select_sections_by_letters (const char *letters)
5088 unsigned int lindex = 0;
5090 while (letters[lindex])
5091 switch (letters[lindex++])
5098 do_debug_abbrevs = 1;
5102 do_debug_lines |= FLAG_DEBUG_LINES_RAW;
5106 do_debug_lines |= FLAG_DEBUG_LINES_DECODED;
5110 do_debug_pubnames = 1;
5114 do_debug_pubtypes = 1;
5118 do_debug_aranges = 1;
5122 do_debug_ranges = 1;
5126 do_debug_frames_interp = 1;
5128 do_debug_frames = 1;
5132 do_debug_macinfo = 1;
5144 warn (_("Unrecognized debug option '%s'\n"), optarg);
5150 dwarf_select_sections_all (void)
5153 do_debug_abbrevs = 1;
5154 do_debug_lines = FLAG_DEBUG_LINES_RAW;
5155 do_debug_pubnames = 1;
5156 do_debug_pubtypes = 1;
5157 do_debug_aranges = 1;
5158 do_debug_ranges = 1;
5159 do_debug_frames = 1;
5160 do_debug_macinfo = 1;
5165 struct dwarf_section_display debug_displays[] =
5167 { { ".debug_abbrev", ".zdebug_abbrev", NULL, NULL, 0, 0 },
5168 display_debug_abbrev, &do_debug_abbrevs, 0 },
5169 { { ".debug_aranges", ".zdebug_aranges", NULL, NULL, 0, 0 },
5170 display_debug_aranges, &do_debug_aranges, 1 },
5171 { { ".debug_frame", ".zdebug_frame", NULL, NULL, 0, 0 },
5172 display_debug_frames, &do_debug_frames, 1 },
5173 { { ".debug_info", ".zdebug_info", NULL, NULL, 0, 0 },
5174 display_debug_info, &do_debug_info, 1 },
5175 { { ".debug_line", ".zdebug_line", NULL, NULL, 0, 0 },
5176 display_debug_lines, &do_debug_lines, 1 },
5177 { { ".debug_pubnames", ".zdebug_pubnames", NULL, NULL, 0, 0 },
5178 display_debug_pubnames, &do_debug_pubnames, 0 },
5179 { { ".eh_frame", "", NULL, NULL, 0, 0 },
5180 display_debug_frames, &do_debug_frames, 1 },
5181 { { ".debug_macinfo", ".zdebug_macinfo", NULL, NULL, 0, 0 },
5182 display_debug_macinfo, &do_debug_macinfo, 0 },
5183 { { ".debug_str", ".zdebug_str", NULL, NULL, 0, 0 },
5184 display_debug_str, &do_debug_str, 0 },
5185 { { ".debug_loc", ".zdebug_loc", NULL, NULL, 0, 0 },
5186 display_debug_loc, &do_debug_loc, 1 },
5187 { { ".debug_pubtypes", ".zdebug_pubtypes", NULL, NULL, 0, 0 },
5188 display_debug_pubnames, &do_debug_pubtypes, 0 },
5189 { { ".debug_ranges", ".zdebug_ranges", NULL, NULL, 0, 0 },
5190 display_debug_ranges, &do_debug_ranges, 1 },
5191 { { ".debug_static_func", ".zdebug_static_func", NULL, NULL, 0, 0 },
5192 display_debug_not_supported, NULL, 0 },
5193 { { ".debug_static_vars", ".zdebug_static_vars", NULL, NULL, 0, 0 },
5194 display_debug_not_supported, NULL, 0 },
5195 { { ".debug_types", ".zdebug_types", NULL, NULL, 0, 0 },
5196 display_debug_types, &do_debug_info, 1 },
5197 { { ".debug_weaknames", ".zdebug_weaknames", NULL, NULL, 0, 0 },
5198 display_debug_not_supported, NULL, 0 }