Commit | Line | Data |
---|---|---|
19e6b90e | 1 | /* dwarf.c -- display DWARF contents of a BFD binary file |
12eae2d3 | 2 | Copyright 2005, 2006 |
19e6b90e L |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GNU Binutils. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
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 | |
20 | 02110-1301, USA. */ | |
21 | ||
22 | #include <stdio.h> | |
23 | ||
24 | #include "dwarf.h" | |
25 | ||
26 | #include "bucomm.h" | |
27 | #include "libiberty.h" | |
28 | ||
29 | static int have_frame_base; | |
30 | static int need_base_address; | |
31 | ||
32 | static unsigned int last_pointer_size = 0; | |
33 | static int warned_about_missing_comp_units = FALSE; | |
34 | ||
35 | static unsigned int num_debug_info_entries = 0; | |
36 | static debug_info *debug_information = NULL; | |
37 | ||
38 | dwarf_vma eh_addr_size; | |
39 | int is_relocatable; | |
40 | ||
41 | int do_debug_info; | |
42 | int do_debug_abbrevs; | |
43 | int do_debug_lines; | |
44 | int do_debug_pubnames; | |
45 | int do_debug_aranges; | |
46 | int do_debug_ranges; | |
47 | int do_debug_frames; | |
48 | int do_debug_frames_interp; | |
49 | int do_debug_macinfo; | |
50 | int do_debug_str; | |
51 | int do_debug_loc; | |
52 | ||
53 | dwarf_vma (*byte_get) (unsigned char *, int); | |
54 | ||
55 | dwarf_vma | |
56 | byte_get_little_endian (unsigned char *field, int size) | |
57 | { | |
58 | switch (size) | |
59 | { | |
60 | case 1: | |
61 | return *field; | |
62 | ||
63 | case 2: | |
64 | return ((unsigned int) (field[0])) | |
65 | | (((unsigned int) (field[1])) << 8); | |
66 | ||
67 | case 4: | |
68 | return ((unsigned long) (field[0])) | |
69 | | (((unsigned long) (field[1])) << 8) | |
70 | | (((unsigned long) (field[2])) << 16) | |
71 | | (((unsigned long) (field[3])) << 24); | |
72 | ||
73 | case 8: | |
74 | if (sizeof (dwarf_vma) == 8) | |
75 | return ((dwarf_vma) (field[0])) | |
76 | | (((dwarf_vma) (field[1])) << 8) | |
77 | | (((dwarf_vma) (field[2])) << 16) | |
78 | | (((dwarf_vma) (field[3])) << 24) | |
79 | | (((dwarf_vma) (field[4])) << 32) | |
80 | | (((dwarf_vma) (field[5])) << 40) | |
81 | | (((dwarf_vma) (field[6])) << 48) | |
82 | | (((dwarf_vma) (field[7])) << 56); | |
83 | else if (sizeof (dwarf_vma) == 4) | |
84 | /* We want to extract data from an 8 byte wide field and | |
85 | place it into a 4 byte wide field. Since this is a little | |
86 | endian source we can just use the 4 byte extraction code. */ | |
87 | return ((unsigned long) (field[0])) | |
88 | | (((unsigned long) (field[1])) << 8) | |
89 | | (((unsigned long) (field[2])) << 16) | |
90 | | (((unsigned long) (field[3])) << 24); | |
91 | ||
92 | default: | |
93 | error (_("Unhandled data length: %d\n"), size); | |
94 | abort (); | |
95 | } | |
96 | } | |
97 | ||
98 | dwarf_vma | |
99 | byte_get_big_endian (unsigned char *field, int size) | |
100 | { | |
101 | switch (size) | |
102 | { | |
103 | case 1: | |
104 | return *field; | |
105 | ||
106 | case 2: | |
107 | return ((unsigned int) (field[1])) | (((int) (field[0])) << 8); | |
108 | ||
109 | case 4: | |
110 | return ((unsigned long) (field[3])) | |
111 | | (((unsigned long) (field[2])) << 8) | |
112 | | (((unsigned long) (field[1])) << 16) | |
113 | | (((unsigned long) (field[0])) << 24); | |
114 | ||
115 | case 8: | |
116 | if (sizeof (dwarf_vma) == 8) | |
117 | return ((dwarf_vma) (field[7])) | |
118 | | (((dwarf_vma) (field[6])) << 8) | |
119 | | (((dwarf_vma) (field[5])) << 16) | |
120 | | (((dwarf_vma) (field[4])) << 24) | |
121 | | (((dwarf_vma) (field[3])) << 32) | |
122 | | (((dwarf_vma) (field[2])) << 40) | |
123 | | (((dwarf_vma) (field[1])) << 48) | |
124 | | (((dwarf_vma) (field[0])) << 56); | |
125 | else if (sizeof (dwarf_vma) == 4) | |
126 | { | |
127 | /* Although we are extracing data from an 8 byte wide field, | |
128 | we are returning only 4 bytes of data. */ | |
129 | field += 4; | |
130 | return ((unsigned long) (field[3])) | |
131 | | (((unsigned long) (field[2])) << 8) | |
132 | | (((unsigned long) (field[1])) << 16) | |
133 | | (((unsigned long) (field[0])) << 24); | |
134 | } | |
135 | ||
136 | default: | |
137 | error (_("Unhandled data length: %d\n"), size); | |
138 | abort (); | |
139 | } | |
140 | } | |
141 | ||
142 | static dwarf_vma | |
143 | byte_get_signed (unsigned char *field, int size) | |
144 | { | |
145 | dwarf_vma x = byte_get (field, size); | |
146 | ||
147 | switch (size) | |
148 | { | |
149 | case 1: | |
150 | return (x ^ 0x80) - 0x80; | |
151 | case 2: | |
152 | return (x ^ 0x8000) - 0x8000; | |
153 | case 4: | |
154 | return (x ^ 0x80000000) - 0x80000000; | |
155 | case 8: | |
156 | return x; | |
157 | default: | |
158 | abort (); | |
159 | } | |
160 | } | |
161 | ||
162 | static unsigned long int | |
163 | read_leb128 (unsigned char *data, unsigned int *length_return, int sign) | |
164 | { | |
165 | unsigned long int result = 0; | |
166 | unsigned int num_read = 0; | |
167 | unsigned int shift = 0; | |
168 | unsigned char byte; | |
169 | ||
170 | do | |
171 | { | |
172 | byte = *data++; | |
173 | num_read++; | |
174 | ||
175 | result |= ((unsigned long int) (byte & 0x7f)) << shift; | |
176 | ||
177 | shift += 7; | |
178 | ||
179 | } | |
180 | while (byte & 0x80); | |
181 | ||
182 | if (length_return != NULL) | |
183 | *length_return = num_read; | |
184 | ||
185 | if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40)) | |
186 | result |= -1L << shift; | |
187 | ||
188 | return result; | |
189 | } | |
190 | ||
191 | typedef struct State_Machine_Registers | |
192 | { | |
193 | unsigned long address; | |
194 | unsigned int file; | |
195 | unsigned int line; | |
196 | unsigned int column; | |
197 | int is_stmt; | |
198 | int basic_block; | |
199 | int end_sequence; | |
200 | /* This variable hold the number of the last entry seen | |
201 | in the File Table. */ | |
202 | unsigned int last_file_entry; | |
203 | } SMR; | |
204 | ||
205 | static SMR state_machine_regs; | |
206 | ||
207 | static void | |
208 | reset_state_machine (int is_stmt) | |
209 | { | |
210 | state_machine_regs.address = 0; | |
211 | state_machine_regs.file = 1; | |
212 | state_machine_regs.line = 1; | |
213 | state_machine_regs.column = 0; | |
214 | state_machine_regs.is_stmt = is_stmt; | |
215 | state_machine_regs.basic_block = 0; | |
216 | state_machine_regs.end_sequence = 0; | |
217 | state_machine_regs.last_file_entry = 0; | |
218 | } | |
219 | ||
220 | /* Handled an extend line op. | |
221 | Returns the number of bytes read. */ | |
222 | ||
223 | static int | |
224 | process_extended_line_op (unsigned char *data, int is_stmt, int pointer_size) | |
225 | { | |
226 | unsigned char op_code; | |
227 | unsigned int bytes_read; | |
228 | unsigned int len; | |
229 | unsigned char *name; | |
230 | unsigned long adr; | |
231 | ||
232 | len = read_leb128 (data, & bytes_read, 0); | |
233 | data += bytes_read; | |
234 | ||
235 | if (len == 0) | |
236 | { | |
237 | warn (_("badly formed extended line op encountered!\n")); | |
238 | return bytes_read; | |
239 | } | |
240 | ||
241 | len += bytes_read; | |
242 | op_code = *data++; | |
243 | ||
244 | printf (_(" Extended opcode %d: "), op_code); | |
245 | ||
246 | switch (op_code) | |
247 | { | |
248 | case DW_LNE_end_sequence: | |
249 | printf (_("End of Sequence\n\n")); | |
250 | reset_state_machine (is_stmt); | |
251 | break; | |
252 | ||
253 | case DW_LNE_set_address: | |
254 | adr = byte_get (data, pointer_size); | |
255 | printf (_("set Address to 0x%lx\n"), adr); | |
256 | state_machine_regs.address = adr; | |
257 | break; | |
258 | ||
259 | case DW_LNE_define_file: | |
260 | printf (_(" define new File Table entry\n")); | |
261 | printf (_(" Entry\tDir\tTime\tSize\tName\n")); | |
262 | ||
263 | printf (_(" %d\t"), ++state_machine_regs.last_file_entry); | |
264 | name = data; | |
265 | data += strlen ((char *) data) + 1; | |
266 | printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); | |
267 | data += bytes_read; | |
268 | printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); | |
269 | data += bytes_read; | |
270 | printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); | |
271 | printf (_("%s\n\n"), name); | |
272 | break; | |
273 | ||
274 | default: | |
275 | printf (_("UNKNOWN: length %d\n"), len - bytes_read); | |
276 | break; | |
277 | } | |
278 | ||
279 | return len; | |
280 | } | |
281 | ||
282 | static const char * | |
283 | fetch_indirect_string (unsigned long offset) | |
284 | { | |
285 | struct dwarf_section *section = &debug_displays [str].section; | |
286 | ||
287 | if (section->start == NULL) | |
288 | return _("<no .debug_str section>"); | |
289 | ||
bfe2612a L |
290 | /* DWARF sections under Mach-O have non-zero addresses. */ |
291 | offset -= section->address; | |
19e6b90e L |
292 | if (offset > section->size) |
293 | { | |
294 | warn (_("DW_FORM_strp offset too big: %lx\n"), offset); | |
295 | return _("<offset is too big>"); | |
296 | } | |
297 | ||
298 | return (const char *) section->start + offset; | |
299 | } | |
300 | ||
301 | /* FIXME: There are better and more efficient ways to handle | |
302 | these structures. For now though, I just want something that | |
303 | is simple to implement. */ | |
304 | typedef struct abbrev_attr | |
305 | { | |
306 | unsigned long attribute; | |
307 | unsigned long form; | |
308 | struct abbrev_attr *next; | |
309 | } | |
310 | abbrev_attr; | |
311 | ||
312 | typedef struct abbrev_entry | |
313 | { | |
314 | unsigned long entry; | |
315 | unsigned long tag; | |
316 | int children; | |
317 | struct abbrev_attr *first_attr; | |
318 | struct abbrev_attr *last_attr; | |
319 | struct abbrev_entry *next; | |
320 | } | |
321 | abbrev_entry; | |
322 | ||
323 | static abbrev_entry *first_abbrev = NULL; | |
324 | static abbrev_entry *last_abbrev = NULL; | |
325 | ||
326 | static void | |
327 | free_abbrevs (void) | |
328 | { | |
329 | abbrev_entry *abbrev; | |
330 | ||
331 | for (abbrev = first_abbrev; abbrev;) | |
332 | { | |
333 | abbrev_entry *next = abbrev->next; | |
334 | abbrev_attr *attr; | |
335 | ||
336 | for (attr = abbrev->first_attr; attr;) | |
337 | { | |
338 | abbrev_attr *next = attr->next; | |
339 | ||
340 | free (attr); | |
341 | attr = next; | |
342 | } | |
343 | ||
344 | free (abbrev); | |
345 | abbrev = next; | |
346 | } | |
347 | ||
348 | last_abbrev = first_abbrev = NULL; | |
349 | } | |
350 | ||
351 | static void | |
352 | add_abbrev (unsigned long number, unsigned long tag, int children) | |
353 | { | |
354 | abbrev_entry *entry; | |
355 | ||
356 | entry = malloc (sizeof (*entry)); | |
357 | ||
358 | if (entry == NULL) | |
359 | /* ugg */ | |
360 | return; | |
361 | ||
362 | entry->entry = number; | |
363 | entry->tag = tag; | |
364 | entry->children = children; | |
365 | entry->first_attr = NULL; | |
366 | entry->last_attr = NULL; | |
367 | entry->next = NULL; | |
368 | ||
369 | if (first_abbrev == NULL) | |
370 | first_abbrev = entry; | |
371 | else | |
372 | last_abbrev->next = entry; | |
373 | ||
374 | last_abbrev = entry; | |
375 | } | |
376 | ||
377 | static void | |
378 | add_abbrev_attr (unsigned long attribute, unsigned long form) | |
379 | { | |
380 | abbrev_attr *attr; | |
381 | ||
382 | attr = malloc (sizeof (*attr)); | |
383 | ||
384 | if (attr == NULL) | |
385 | /* ugg */ | |
386 | return; | |
387 | ||
388 | attr->attribute = attribute; | |
389 | attr->form = form; | |
390 | attr->next = NULL; | |
391 | ||
392 | if (last_abbrev->first_attr == NULL) | |
393 | last_abbrev->first_attr = attr; | |
394 | else | |
395 | last_abbrev->last_attr->next = attr; | |
396 | ||
397 | last_abbrev->last_attr = attr; | |
398 | } | |
399 | ||
400 | /* Processes the (partial) contents of a .debug_abbrev section. | |
401 | Returns NULL if the end of the section was encountered. | |
402 | Returns the address after the last byte read if the end of | |
403 | an abbreviation set was found. */ | |
404 | ||
405 | static unsigned char * | |
406 | process_abbrev_section (unsigned char *start, unsigned char *end) | |
407 | { | |
408 | if (first_abbrev != NULL) | |
409 | return NULL; | |
410 | ||
411 | while (start < end) | |
412 | { | |
413 | unsigned int bytes_read; | |
414 | unsigned long entry; | |
415 | unsigned long tag; | |
416 | unsigned long attribute; | |
417 | int children; | |
418 | ||
419 | entry = read_leb128 (start, & bytes_read, 0); | |
420 | start += bytes_read; | |
421 | ||
422 | /* A single zero is supposed to end the section according | |
423 | to the standard. If there's more, then signal that to | |
424 | the caller. */ | |
425 | if (entry == 0) | |
426 | return start == end ? NULL : start; | |
427 | ||
428 | tag = read_leb128 (start, & bytes_read, 0); | |
429 | start += bytes_read; | |
430 | ||
431 | children = *start++; | |
432 | ||
433 | add_abbrev (entry, tag, children); | |
434 | ||
435 | do | |
436 | { | |
437 | unsigned long form; | |
438 | ||
439 | attribute = read_leb128 (start, & bytes_read, 0); | |
440 | start += bytes_read; | |
441 | ||
442 | form = read_leb128 (start, & bytes_read, 0); | |
443 | start += bytes_read; | |
444 | ||
445 | if (attribute != 0) | |
446 | add_abbrev_attr (attribute, form); | |
447 | } | |
448 | while (attribute != 0); | |
449 | } | |
450 | ||
451 | return NULL; | |
452 | } | |
453 | ||
454 | static char * | |
455 | get_TAG_name (unsigned long tag) | |
456 | { | |
457 | switch (tag) | |
458 | { | |
459 | case DW_TAG_padding: return "DW_TAG_padding"; | |
460 | case DW_TAG_array_type: return "DW_TAG_array_type"; | |
461 | case DW_TAG_class_type: return "DW_TAG_class_type"; | |
462 | case DW_TAG_entry_point: return "DW_TAG_entry_point"; | |
463 | case DW_TAG_enumeration_type: return "DW_TAG_enumeration_type"; | |
464 | case DW_TAG_formal_parameter: return "DW_TAG_formal_parameter"; | |
465 | case DW_TAG_imported_declaration: return "DW_TAG_imported_declaration"; | |
466 | case DW_TAG_label: return "DW_TAG_label"; | |
467 | case DW_TAG_lexical_block: return "DW_TAG_lexical_block"; | |
468 | case DW_TAG_member: return "DW_TAG_member"; | |
469 | case DW_TAG_pointer_type: return "DW_TAG_pointer_type"; | |
470 | case DW_TAG_reference_type: return "DW_TAG_reference_type"; | |
471 | case DW_TAG_compile_unit: return "DW_TAG_compile_unit"; | |
472 | case DW_TAG_string_type: return "DW_TAG_string_type"; | |
473 | case DW_TAG_structure_type: return "DW_TAG_structure_type"; | |
474 | case DW_TAG_subroutine_type: return "DW_TAG_subroutine_type"; | |
475 | case DW_TAG_typedef: return "DW_TAG_typedef"; | |
476 | case DW_TAG_union_type: return "DW_TAG_union_type"; | |
477 | case DW_TAG_unspecified_parameters: return "DW_TAG_unspecified_parameters"; | |
478 | case DW_TAG_variant: return "DW_TAG_variant"; | |
479 | case DW_TAG_common_block: return "DW_TAG_common_block"; | |
480 | case DW_TAG_common_inclusion: return "DW_TAG_common_inclusion"; | |
481 | case DW_TAG_inheritance: return "DW_TAG_inheritance"; | |
482 | case DW_TAG_inlined_subroutine: return "DW_TAG_inlined_subroutine"; | |
483 | case DW_TAG_module: return "DW_TAG_module"; | |
484 | case DW_TAG_ptr_to_member_type: return "DW_TAG_ptr_to_member_type"; | |
485 | case DW_TAG_set_type: return "DW_TAG_set_type"; | |
486 | case DW_TAG_subrange_type: return "DW_TAG_subrange_type"; | |
487 | case DW_TAG_with_stmt: return "DW_TAG_with_stmt"; | |
488 | case DW_TAG_access_declaration: return "DW_TAG_access_declaration"; | |
489 | case DW_TAG_base_type: return "DW_TAG_base_type"; | |
490 | case DW_TAG_catch_block: return "DW_TAG_catch_block"; | |
491 | case DW_TAG_const_type: return "DW_TAG_const_type"; | |
492 | case DW_TAG_constant: return "DW_TAG_constant"; | |
493 | case DW_TAG_enumerator: return "DW_TAG_enumerator"; | |
494 | case DW_TAG_file_type: return "DW_TAG_file_type"; | |
495 | case DW_TAG_friend: return "DW_TAG_friend"; | |
496 | case DW_TAG_namelist: return "DW_TAG_namelist"; | |
497 | case DW_TAG_namelist_item: return "DW_TAG_namelist_item"; | |
498 | case DW_TAG_packed_type: return "DW_TAG_packed_type"; | |
499 | case DW_TAG_subprogram: return "DW_TAG_subprogram"; | |
500 | case DW_TAG_template_type_param: return "DW_TAG_template_type_param"; | |
501 | case DW_TAG_template_value_param: return "DW_TAG_template_value_param"; | |
502 | case DW_TAG_thrown_type: return "DW_TAG_thrown_type"; | |
503 | case DW_TAG_try_block: return "DW_TAG_try_block"; | |
504 | case DW_TAG_variant_part: return "DW_TAG_variant_part"; | |
505 | case DW_TAG_variable: return "DW_TAG_variable"; | |
506 | case DW_TAG_volatile_type: return "DW_TAG_volatile_type"; | |
507 | case DW_TAG_MIPS_loop: return "DW_TAG_MIPS_loop"; | |
508 | case DW_TAG_format_label: return "DW_TAG_format_label"; | |
509 | case DW_TAG_function_template: return "DW_TAG_function_template"; | |
510 | case DW_TAG_class_template: return "DW_TAG_class_template"; | |
511 | /* DWARF 2.1 values. */ | |
512 | case DW_TAG_dwarf_procedure: return "DW_TAG_dwarf_procedure"; | |
513 | case DW_TAG_restrict_type: return "DW_TAG_restrict_type"; | |
514 | case DW_TAG_interface_type: return "DW_TAG_interface_type"; | |
515 | case DW_TAG_namespace: return "DW_TAG_namespace"; | |
516 | case DW_TAG_imported_module: return "DW_TAG_imported_module"; | |
517 | case DW_TAG_unspecified_type: return "DW_TAG_unspecified_type"; | |
518 | case DW_TAG_partial_unit: return "DW_TAG_partial_unit"; | |
519 | case DW_TAG_imported_unit: return "DW_TAG_imported_unit"; | |
520 | /* UPC values. */ | |
521 | case DW_TAG_upc_shared_type: return "DW_TAG_upc_shared_type"; | |
522 | case DW_TAG_upc_strict_type: return "DW_TAG_upc_strict_type"; | |
523 | case DW_TAG_upc_relaxed_type: return "DW_TAG_upc_relaxed_type"; | |
524 | default: | |
525 | { | |
526 | static char buffer[100]; | |
527 | ||
528 | snprintf (buffer, sizeof (buffer), _("Unknown TAG value: %lx"), tag); | |
529 | return buffer; | |
530 | } | |
531 | } | |
532 | } | |
533 | ||
534 | static char * | |
535 | get_FORM_name (unsigned long form) | |
536 | { | |
537 | switch (form) | |
538 | { | |
539 | case DW_FORM_addr: return "DW_FORM_addr"; | |
540 | case DW_FORM_block2: return "DW_FORM_block2"; | |
541 | case DW_FORM_block4: return "DW_FORM_block4"; | |
542 | case DW_FORM_data2: return "DW_FORM_data2"; | |
543 | case DW_FORM_data4: return "DW_FORM_data4"; | |
544 | case DW_FORM_data8: return "DW_FORM_data8"; | |
545 | case DW_FORM_string: return "DW_FORM_string"; | |
546 | case DW_FORM_block: return "DW_FORM_block"; | |
547 | case DW_FORM_block1: return "DW_FORM_block1"; | |
548 | case DW_FORM_data1: return "DW_FORM_data1"; | |
549 | case DW_FORM_flag: return "DW_FORM_flag"; | |
550 | case DW_FORM_sdata: return "DW_FORM_sdata"; | |
551 | case DW_FORM_strp: return "DW_FORM_strp"; | |
552 | case DW_FORM_udata: return "DW_FORM_udata"; | |
553 | case DW_FORM_ref_addr: return "DW_FORM_ref_addr"; | |
554 | case DW_FORM_ref1: return "DW_FORM_ref1"; | |
555 | case DW_FORM_ref2: return "DW_FORM_ref2"; | |
556 | case DW_FORM_ref4: return "DW_FORM_ref4"; | |
557 | case DW_FORM_ref8: return "DW_FORM_ref8"; | |
558 | case DW_FORM_ref_udata: return "DW_FORM_ref_udata"; | |
559 | case DW_FORM_indirect: return "DW_FORM_indirect"; | |
560 | default: | |
561 | { | |
562 | static char buffer[100]; | |
563 | ||
564 | snprintf (buffer, sizeof (buffer), _("Unknown FORM value: %lx"), form); | |
565 | return buffer; | |
566 | } | |
567 | } | |
568 | } | |
569 | ||
570 | static unsigned char * | |
571 | display_block (unsigned char *data, unsigned long length) | |
572 | { | |
573 | printf (_(" %lu byte block: "), length); | |
574 | ||
575 | while (length --) | |
576 | printf ("%lx ", (unsigned long) byte_get (data++, 1)); | |
577 | ||
578 | return data; | |
579 | } | |
580 | ||
581 | static int | |
582 | decode_location_expression (unsigned char * data, | |
583 | unsigned int pointer_size, | |
584 | unsigned long length, | |
585 | unsigned long cu_offset) | |
586 | { | |
587 | unsigned op; | |
588 | unsigned int bytes_read; | |
589 | unsigned long uvalue; | |
590 | unsigned char *end = data + length; | |
591 | int need_frame_base = 0; | |
592 | ||
593 | while (data < end) | |
594 | { | |
595 | op = *data++; | |
596 | ||
597 | switch (op) | |
598 | { | |
599 | case DW_OP_addr: | |
600 | printf ("DW_OP_addr: %lx", | |
601 | (unsigned long) byte_get (data, pointer_size)); | |
602 | data += pointer_size; | |
603 | break; | |
604 | case DW_OP_deref: | |
605 | printf ("DW_OP_deref"); | |
606 | break; | |
607 | case DW_OP_const1u: | |
608 | printf ("DW_OP_const1u: %lu", (unsigned long) byte_get (data++, 1)); | |
609 | break; | |
610 | case DW_OP_const1s: | |
611 | printf ("DW_OP_const1s: %ld", (long) byte_get_signed (data++, 1)); | |
612 | break; | |
613 | case DW_OP_const2u: | |
614 | printf ("DW_OP_const2u: %lu", (unsigned long) byte_get (data, 2)); | |
615 | data += 2; | |
616 | break; | |
617 | case DW_OP_const2s: | |
618 | printf ("DW_OP_const2s: %ld", (long) byte_get_signed (data, 2)); | |
619 | data += 2; | |
620 | break; | |
621 | case DW_OP_const4u: | |
622 | printf ("DW_OP_const4u: %lu", (unsigned long) byte_get (data, 4)); | |
623 | data += 4; | |
624 | break; | |
625 | case DW_OP_const4s: | |
626 | printf ("DW_OP_const4s: %ld", (long) byte_get_signed (data, 4)); | |
627 | data += 4; | |
628 | break; | |
629 | case DW_OP_const8u: | |
630 | printf ("DW_OP_const8u: %lu %lu", (unsigned long) byte_get (data, 4), | |
631 | (unsigned long) byte_get (data + 4, 4)); | |
632 | data += 8; | |
633 | break; | |
634 | case DW_OP_const8s: | |
635 | printf ("DW_OP_const8s: %ld %ld", (long) byte_get (data, 4), | |
636 | (long) byte_get (data + 4, 4)); | |
637 | data += 8; | |
638 | break; | |
639 | case DW_OP_constu: | |
640 | printf ("DW_OP_constu: %lu", read_leb128 (data, &bytes_read, 0)); | |
641 | data += bytes_read; | |
642 | break; | |
643 | case DW_OP_consts: | |
644 | printf ("DW_OP_consts: %ld", read_leb128 (data, &bytes_read, 1)); | |
645 | data += bytes_read; | |
646 | break; | |
647 | case DW_OP_dup: | |
648 | printf ("DW_OP_dup"); | |
649 | break; | |
650 | case DW_OP_drop: | |
651 | printf ("DW_OP_drop"); | |
652 | break; | |
653 | case DW_OP_over: | |
654 | printf ("DW_OP_over"); | |
655 | break; | |
656 | case DW_OP_pick: | |
657 | printf ("DW_OP_pick: %ld", (unsigned long) byte_get (data++, 1)); | |
658 | break; | |
659 | case DW_OP_swap: | |
660 | printf ("DW_OP_swap"); | |
661 | break; | |
662 | case DW_OP_rot: | |
663 | printf ("DW_OP_rot"); | |
664 | break; | |
665 | case DW_OP_xderef: | |
666 | printf ("DW_OP_xderef"); | |
667 | break; | |
668 | case DW_OP_abs: | |
669 | printf ("DW_OP_abs"); | |
670 | break; | |
671 | case DW_OP_and: | |
672 | printf ("DW_OP_and"); | |
673 | break; | |
674 | case DW_OP_div: | |
675 | printf ("DW_OP_div"); | |
676 | break; | |
677 | case DW_OP_minus: | |
678 | printf ("DW_OP_minus"); | |
679 | break; | |
680 | case DW_OP_mod: | |
681 | printf ("DW_OP_mod"); | |
682 | break; | |
683 | case DW_OP_mul: | |
684 | printf ("DW_OP_mul"); | |
685 | break; | |
686 | case DW_OP_neg: | |
687 | printf ("DW_OP_neg"); | |
688 | break; | |
689 | case DW_OP_not: | |
690 | printf ("DW_OP_not"); | |
691 | break; | |
692 | case DW_OP_or: | |
693 | printf ("DW_OP_or"); | |
694 | break; | |
695 | case DW_OP_plus: | |
696 | printf ("DW_OP_plus"); | |
697 | break; | |
698 | case DW_OP_plus_uconst: | |
699 | printf ("DW_OP_plus_uconst: %lu", | |
700 | read_leb128 (data, &bytes_read, 0)); | |
701 | data += bytes_read; | |
702 | break; | |
703 | case DW_OP_shl: | |
704 | printf ("DW_OP_shl"); | |
705 | break; | |
706 | case DW_OP_shr: | |
707 | printf ("DW_OP_shr"); | |
708 | break; | |
709 | case DW_OP_shra: | |
710 | printf ("DW_OP_shra"); | |
711 | break; | |
712 | case DW_OP_xor: | |
713 | printf ("DW_OP_xor"); | |
714 | break; | |
715 | case DW_OP_bra: | |
716 | printf ("DW_OP_bra: %ld", (long) byte_get_signed (data, 2)); | |
717 | data += 2; | |
718 | break; | |
719 | case DW_OP_eq: | |
720 | printf ("DW_OP_eq"); | |
721 | break; | |
722 | case DW_OP_ge: | |
723 | printf ("DW_OP_ge"); | |
724 | break; | |
725 | case DW_OP_gt: | |
726 | printf ("DW_OP_gt"); | |
727 | break; | |
728 | case DW_OP_le: | |
729 | printf ("DW_OP_le"); | |
730 | break; | |
731 | case DW_OP_lt: | |
732 | printf ("DW_OP_lt"); | |
733 | break; | |
734 | case DW_OP_ne: | |
735 | printf ("DW_OP_ne"); | |
736 | break; | |
737 | case DW_OP_skip: | |
738 | printf ("DW_OP_skip: %ld", (long) byte_get_signed (data, 2)); | |
739 | data += 2; | |
740 | break; | |
741 | ||
742 | case DW_OP_lit0: | |
743 | case DW_OP_lit1: | |
744 | case DW_OP_lit2: | |
745 | case DW_OP_lit3: | |
746 | case DW_OP_lit4: | |
747 | case DW_OP_lit5: | |
748 | case DW_OP_lit6: | |
749 | case DW_OP_lit7: | |
750 | case DW_OP_lit8: | |
751 | case DW_OP_lit9: | |
752 | case DW_OP_lit10: | |
753 | case DW_OP_lit11: | |
754 | case DW_OP_lit12: | |
755 | case DW_OP_lit13: | |
756 | case DW_OP_lit14: | |
757 | case DW_OP_lit15: | |
758 | case DW_OP_lit16: | |
759 | case DW_OP_lit17: | |
760 | case DW_OP_lit18: | |
761 | case DW_OP_lit19: | |
762 | case DW_OP_lit20: | |
763 | case DW_OP_lit21: | |
764 | case DW_OP_lit22: | |
765 | case DW_OP_lit23: | |
766 | case DW_OP_lit24: | |
767 | case DW_OP_lit25: | |
768 | case DW_OP_lit26: | |
769 | case DW_OP_lit27: | |
770 | case DW_OP_lit28: | |
771 | case DW_OP_lit29: | |
772 | case DW_OP_lit30: | |
773 | case DW_OP_lit31: | |
774 | printf ("DW_OP_lit%d", op - DW_OP_lit0); | |
775 | break; | |
776 | ||
777 | case DW_OP_reg0: | |
778 | case DW_OP_reg1: | |
779 | case DW_OP_reg2: | |
780 | case DW_OP_reg3: | |
781 | case DW_OP_reg4: | |
782 | case DW_OP_reg5: | |
783 | case DW_OP_reg6: | |
784 | case DW_OP_reg7: | |
785 | case DW_OP_reg8: | |
786 | case DW_OP_reg9: | |
787 | case DW_OP_reg10: | |
788 | case DW_OP_reg11: | |
789 | case DW_OP_reg12: | |
790 | case DW_OP_reg13: | |
791 | case DW_OP_reg14: | |
792 | case DW_OP_reg15: | |
793 | case DW_OP_reg16: | |
794 | case DW_OP_reg17: | |
795 | case DW_OP_reg18: | |
796 | case DW_OP_reg19: | |
797 | case DW_OP_reg20: | |
798 | case DW_OP_reg21: | |
799 | case DW_OP_reg22: | |
800 | case DW_OP_reg23: | |
801 | case DW_OP_reg24: | |
802 | case DW_OP_reg25: | |
803 | case DW_OP_reg26: | |
804 | case DW_OP_reg27: | |
805 | case DW_OP_reg28: | |
806 | case DW_OP_reg29: | |
807 | case DW_OP_reg30: | |
808 | case DW_OP_reg31: | |
809 | printf ("DW_OP_reg%d", op - DW_OP_reg0); | |
810 | break; | |
811 | ||
812 | case DW_OP_breg0: | |
813 | case DW_OP_breg1: | |
814 | case DW_OP_breg2: | |
815 | case DW_OP_breg3: | |
816 | case DW_OP_breg4: | |
817 | case DW_OP_breg5: | |
818 | case DW_OP_breg6: | |
819 | case DW_OP_breg7: | |
820 | case DW_OP_breg8: | |
821 | case DW_OP_breg9: | |
822 | case DW_OP_breg10: | |
823 | case DW_OP_breg11: | |
824 | case DW_OP_breg12: | |
825 | case DW_OP_breg13: | |
826 | case DW_OP_breg14: | |
827 | case DW_OP_breg15: | |
828 | case DW_OP_breg16: | |
829 | case DW_OP_breg17: | |
830 | case DW_OP_breg18: | |
831 | case DW_OP_breg19: | |
832 | case DW_OP_breg20: | |
833 | case DW_OP_breg21: | |
834 | case DW_OP_breg22: | |
835 | case DW_OP_breg23: | |
836 | case DW_OP_breg24: | |
837 | case DW_OP_breg25: | |
838 | case DW_OP_breg26: | |
839 | case DW_OP_breg27: | |
840 | case DW_OP_breg28: | |
841 | case DW_OP_breg29: | |
842 | case DW_OP_breg30: | |
843 | case DW_OP_breg31: | |
844 | printf ("DW_OP_breg%d: %ld", op - DW_OP_breg0, | |
845 | read_leb128 (data, &bytes_read, 1)); | |
846 | data += bytes_read; | |
847 | break; | |
848 | ||
849 | case DW_OP_regx: | |
850 | printf ("DW_OP_regx: %lu", read_leb128 (data, &bytes_read, 0)); | |
851 | data += bytes_read; | |
852 | break; | |
853 | case DW_OP_fbreg: | |
854 | need_frame_base = 1; | |
855 | printf ("DW_OP_fbreg: %ld", read_leb128 (data, &bytes_read, 1)); | |
856 | data += bytes_read; | |
857 | break; | |
858 | case DW_OP_bregx: | |
859 | uvalue = read_leb128 (data, &bytes_read, 0); | |
860 | data += bytes_read; | |
861 | printf ("DW_OP_bregx: %lu %ld", uvalue, | |
862 | read_leb128 (data, &bytes_read, 1)); | |
863 | data += bytes_read; | |
864 | break; | |
865 | case DW_OP_piece: | |
866 | printf ("DW_OP_piece: %lu", read_leb128 (data, &bytes_read, 0)); | |
867 | data += bytes_read; | |
868 | break; | |
869 | case DW_OP_deref_size: | |
870 | printf ("DW_OP_deref_size: %ld", (long) byte_get (data++, 1)); | |
871 | break; | |
872 | case DW_OP_xderef_size: | |
873 | printf ("DW_OP_xderef_size: %ld", (long) byte_get (data++, 1)); | |
874 | break; | |
875 | case DW_OP_nop: | |
876 | printf ("DW_OP_nop"); | |
877 | break; | |
878 | ||
879 | /* DWARF 3 extensions. */ | |
880 | case DW_OP_push_object_address: | |
881 | printf ("DW_OP_push_object_address"); | |
882 | break; | |
883 | case DW_OP_call2: | |
884 | /* XXX: Strictly speaking for 64-bit DWARF3 files | |
885 | this ought to be an 8-byte wide computation. */ | |
886 | printf ("DW_OP_call2: <%lx>", (long) byte_get (data, 2) + cu_offset); | |
887 | data += 2; | |
888 | break; | |
889 | case DW_OP_call4: | |
890 | /* XXX: Strictly speaking for 64-bit DWARF3 files | |
891 | this ought to be an 8-byte wide computation. */ | |
892 | printf ("DW_OP_call4: <%lx>", (long) byte_get (data, 4) + cu_offset); | |
893 | data += 4; | |
894 | break; | |
895 | case DW_OP_call_ref: | |
896 | printf ("DW_OP_call_ref"); | |
897 | break; | |
898 | ||
899 | /* GNU extensions. */ | |
900 | case DW_OP_GNU_push_tls_address: | |
901 | printf ("DW_OP_GNU_push_tls_address"); | |
902 | break; | |
903 | ||
904 | default: | |
905 | if (op >= DW_OP_lo_user | |
906 | && op <= DW_OP_hi_user) | |
907 | printf (_("(User defined location op)")); | |
908 | else | |
909 | printf (_("(Unknown location op)")); | |
910 | /* No way to tell where the next op is, so just bail. */ | |
911 | return need_frame_base; | |
912 | } | |
913 | ||
914 | /* Separate the ops. */ | |
915 | if (data < end) | |
916 | printf ("; "); | |
917 | } | |
918 | ||
919 | return need_frame_base; | |
920 | } | |
921 | ||
922 | static unsigned char * | |
923 | read_and_display_attr_value (unsigned long attribute, | |
924 | unsigned long form, | |
925 | unsigned char *data, | |
926 | unsigned long cu_offset, | |
927 | unsigned long pointer_size, | |
928 | unsigned long offset_size, | |
929 | int dwarf_version, | |
930 | debug_info *debug_info_p, | |
931 | int do_loc) | |
932 | { | |
933 | unsigned long uvalue = 0; | |
934 | unsigned char *block_start = NULL; | |
935 | unsigned int bytes_read; | |
936 | ||
937 | switch (form) | |
938 | { | |
939 | default: | |
940 | break; | |
941 | ||
942 | case DW_FORM_ref_addr: | |
943 | if (dwarf_version == 2) | |
944 | { | |
945 | uvalue = byte_get (data, pointer_size); | |
946 | data += pointer_size; | |
947 | } | |
948 | else if (dwarf_version == 3) | |
949 | { | |
950 | uvalue = byte_get (data, offset_size); | |
951 | data += offset_size; | |
952 | } | |
953 | else | |
954 | { | |
955 | error (_("Internal error: DWARF version is not 2 or 3.\n")); | |
956 | } | |
957 | break; | |
958 | ||
959 | case DW_FORM_addr: | |
960 | uvalue = byte_get (data, pointer_size); | |
961 | data += pointer_size; | |
962 | break; | |
963 | ||
964 | case DW_FORM_strp: | |
965 | uvalue = byte_get (data, offset_size); | |
966 | data += offset_size; | |
967 | break; | |
968 | ||
969 | case DW_FORM_ref1: | |
970 | case DW_FORM_flag: | |
971 | case DW_FORM_data1: | |
972 | uvalue = byte_get (data++, 1); | |
973 | break; | |
974 | ||
975 | case DW_FORM_ref2: | |
976 | case DW_FORM_data2: | |
977 | uvalue = byte_get (data, 2); | |
978 | data += 2; | |
979 | break; | |
980 | ||
981 | case DW_FORM_ref4: | |
982 | case DW_FORM_data4: | |
983 | uvalue = byte_get (data, 4); | |
984 | data += 4; | |
985 | break; | |
986 | ||
987 | case DW_FORM_sdata: | |
988 | uvalue = read_leb128 (data, & bytes_read, 1); | |
989 | data += bytes_read; | |
990 | break; | |
991 | ||
992 | case DW_FORM_ref_udata: | |
993 | case DW_FORM_udata: | |
994 | uvalue = read_leb128 (data, & bytes_read, 0); | |
995 | data += bytes_read; | |
996 | break; | |
997 | ||
998 | case DW_FORM_indirect: | |
999 | form = read_leb128 (data, & bytes_read, 0); | |
1000 | data += bytes_read; | |
1001 | if (!do_loc) | |
1002 | printf (" %s", get_FORM_name (form)); | |
1003 | return read_and_display_attr_value (attribute, form, data, | |
1004 | cu_offset, pointer_size, | |
1005 | offset_size, dwarf_version, | |
1006 | debug_info_p, do_loc); | |
1007 | } | |
1008 | ||
1009 | switch (form) | |
1010 | { | |
1011 | case DW_FORM_ref_addr: | |
1012 | if (!do_loc) | |
1013 | printf (" <#%lx>", uvalue); | |
1014 | break; | |
1015 | ||
1016 | case DW_FORM_ref1: | |
1017 | case DW_FORM_ref2: | |
1018 | case DW_FORM_ref4: | |
1019 | case DW_FORM_ref_udata: | |
1020 | if (!do_loc) | |
1021 | printf (" <%lx>", uvalue + cu_offset); | |
1022 | break; | |
1023 | ||
1024 | case DW_FORM_data4: | |
1025 | case DW_FORM_addr: | |
1026 | if (!do_loc) | |
1027 | printf (" %#lx", uvalue); | |
1028 | break; | |
1029 | ||
1030 | case DW_FORM_flag: | |
1031 | case DW_FORM_data1: | |
1032 | case DW_FORM_data2: | |
1033 | case DW_FORM_sdata: | |
1034 | case DW_FORM_udata: | |
1035 | if (!do_loc) | |
1036 | printf (" %ld", uvalue); | |
1037 | break; | |
1038 | ||
1039 | case DW_FORM_ref8: | |
1040 | case DW_FORM_data8: | |
1041 | if (!do_loc) | |
1042 | { | |
1043 | uvalue = byte_get (data, 4); | |
1044 | printf (" %lx", uvalue); | |
1045 | printf (" %lx", (unsigned long) byte_get (data + 4, 4)); | |
1046 | } | |
1047 | if ((do_loc || do_debug_loc || do_debug_ranges) | |
1048 | && num_debug_info_entries == 0) | |
1049 | { | |
1050 | if (sizeof (uvalue) == 8) | |
1051 | uvalue = byte_get (data, 8); | |
1052 | else | |
1053 | error (_("DW_FORM_data8 is unsupported when sizeof (unsigned long) != 8\n")); | |
1054 | } | |
1055 | data += 8; | |
1056 | break; | |
1057 | ||
1058 | case DW_FORM_string: | |
1059 | if (!do_loc) | |
1060 | printf (" %s", data); | |
1061 | data += strlen ((char *) data) + 1; | |
1062 | break; | |
1063 | ||
1064 | case DW_FORM_block: | |
1065 | uvalue = read_leb128 (data, & bytes_read, 0); | |
1066 | block_start = data + bytes_read; | |
1067 | if (do_loc) | |
1068 | data = block_start + uvalue; | |
1069 | else | |
1070 | data = display_block (block_start, uvalue); | |
1071 | break; | |
1072 | ||
1073 | case DW_FORM_block1: | |
1074 | uvalue = byte_get (data, 1); | |
1075 | block_start = data + 1; | |
1076 | if (do_loc) | |
1077 | data = block_start + uvalue; | |
1078 | else | |
1079 | data = display_block (block_start, uvalue); | |
1080 | break; | |
1081 | ||
1082 | case DW_FORM_block2: | |
1083 | uvalue = byte_get (data, 2); | |
1084 | block_start = data + 2; | |
1085 | if (do_loc) | |
1086 | data = block_start + uvalue; | |
1087 | else | |
1088 | data = display_block (block_start, uvalue); | |
1089 | break; | |
1090 | ||
1091 | case DW_FORM_block4: | |
1092 | uvalue = byte_get (data, 4); | |
1093 | block_start = data + 4; | |
1094 | if (do_loc) | |
1095 | data = block_start + uvalue; | |
1096 | else | |
1097 | data = display_block (block_start, uvalue); | |
1098 | break; | |
1099 | ||
1100 | case DW_FORM_strp: | |
1101 | if (!do_loc) | |
1102 | printf (_(" (indirect string, offset: 0x%lx): %s"), | |
1103 | uvalue, fetch_indirect_string (uvalue)); | |
1104 | break; | |
1105 | ||
1106 | case DW_FORM_indirect: | |
1107 | /* Handled above. */ | |
1108 | break; | |
1109 | ||
1110 | default: | |
1111 | warn (_("Unrecognized form: %lu\n"), form); | |
1112 | break; | |
1113 | } | |
1114 | ||
1115 | /* For some attributes we can display further information. */ | |
1116 | if ((do_loc || do_debug_loc || do_debug_ranges) | |
1117 | && num_debug_info_entries == 0) | |
1118 | { | |
1119 | switch (attribute) | |
1120 | { | |
1121 | case DW_AT_frame_base: | |
1122 | have_frame_base = 1; | |
1123 | case DW_AT_location: | |
1124 | case DW_AT_data_member_location: | |
1125 | case DW_AT_vtable_elem_location: | |
1126 | case DW_AT_allocated: | |
1127 | case DW_AT_associated: | |
1128 | case DW_AT_data_location: | |
1129 | case DW_AT_stride: | |
1130 | case DW_AT_upper_bound: | |
1131 | case DW_AT_lower_bound: | |
1132 | if (form == DW_FORM_data4 || form == DW_FORM_data8) | |
1133 | { | |
1134 | /* Process location list. */ | |
1135 | unsigned int max = debug_info_p->max_loc_offsets; | |
1136 | unsigned int num = debug_info_p->num_loc_offsets; | |
1137 | ||
1138 | if (max == 0 || num >= max) | |
1139 | { | |
1140 | max += 1024; | |
1141 | debug_info_p->loc_offsets | |
1142 | = xcrealloc (debug_info_p->loc_offsets, | |
1143 | max, sizeof (*debug_info_p->loc_offsets)); | |
1144 | debug_info_p->have_frame_base | |
1145 | = xcrealloc (debug_info_p->have_frame_base, | |
1146 | max, sizeof (*debug_info_p->have_frame_base)); | |
1147 | debug_info_p->max_loc_offsets = max; | |
1148 | } | |
1149 | debug_info_p->loc_offsets [num] = uvalue; | |
1150 | debug_info_p->have_frame_base [num] = have_frame_base; | |
1151 | debug_info_p->num_loc_offsets++; | |
1152 | } | |
1153 | break; | |
1154 | ||
1155 | case DW_AT_low_pc: | |
1156 | if (need_base_address) | |
1157 | debug_info_p->base_address = uvalue; | |
1158 | break; | |
1159 | ||
1160 | case DW_AT_ranges: | |
1161 | if (form == DW_FORM_data4 || form == DW_FORM_data8) | |
1162 | { | |
1163 | /* Process range list. */ | |
1164 | unsigned int max = debug_info_p->max_range_lists; | |
1165 | unsigned int num = debug_info_p->num_range_lists; | |
1166 | ||
1167 | if (max == 0 || num >= max) | |
1168 | { | |
1169 | max += 1024; | |
1170 | debug_info_p->range_lists | |
1171 | = xcrealloc (debug_info_p->range_lists, | |
1172 | max, sizeof (*debug_info_p->range_lists)); | |
1173 | debug_info_p->max_range_lists = max; | |
1174 | } | |
1175 | debug_info_p->range_lists [num] = uvalue; | |
1176 | debug_info_p->num_range_lists++; | |
1177 | } | |
1178 | break; | |
1179 | ||
1180 | default: | |
1181 | break; | |
1182 | } | |
1183 | } | |
1184 | ||
1185 | if (do_loc) | |
1186 | return data; | |
1187 | ||
1188 | printf ("\t"); | |
1189 | ||
1190 | switch (attribute) | |
1191 | { | |
1192 | case DW_AT_inline: | |
1193 | switch (uvalue) | |
1194 | { | |
1195 | case DW_INL_not_inlined: | |
1196 | printf (_("(not inlined)")); | |
1197 | break; | |
1198 | case DW_INL_inlined: | |
1199 | printf (_("(inlined)")); | |
1200 | break; | |
1201 | case DW_INL_declared_not_inlined: | |
1202 | printf (_("(declared as inline but ignored)")); | |
1203 | break; | |
1204 | case DW_INL_declared_inlined: | |
1205 | printf (_("(declared as inline and inlined)")); | |
1206 | break; | |
1207 | default: | |
1208 | printf (_(" (Unknown inline attribute value: %lx)"), uvalue); | |
1209 | break; | |
1210 | } | |
1211 | break; | |
1212 | ||
1213 | case DW_AT_language: | |
1214 | switch (uvalue) | |
1215 | { | |
1216 | case DW_LANG_C: printf ("(non-ANSI C)"); break; | |
1217 | case DW_LANG_C89: printf ("(ANSI C)"); break; | |
1218 | case DW_LANG_C_plus_plus: printf ("(C++)"); break; | |
1219 | case DW_LANG_Fortran77: printf ("(FORTRAN 77)"); break; | |
1220 | case DW_LANG_Fortran90: printf ("(Fortran 90)"); break; | |
1221 | case DW_LANG_Modula2: printf ("(Modula 2)"); break; | |
1222 | case DW_LANG_Pascal83: printf ("(ANSI Pascal)"); break; | |
1223 | case DW_LANG_Ada83: printf ("(Ada)"); break; | |
1224 | case DW_LANG_Cobol74: printf ("(Cobol 74)"); break; | |
1225 | case DW_LANG_Cobol85: printf ("(Cobol 85)"); break; | |
1226 | /* DWARF 2.1 values. */ | |
1227 | case DW_LANG_C99: printf ("(ANSI C99)"); break; | |
1228 | case DW_LANG_Ada95: printf ("(ADA 95)"); break; | |
1229 | case DW_LANG_Fortran95: printf ("(Fortran 95)"); break; | |
1230 | /* MIPS extension. */ | |
1231 | case DW_LANG_Mips_Assembler: printf ("(MIPS assembler)"); break; | |
1232 | /* UPC extension. */ | |
1233 | case DW_LANG_Upc: printf ("(Unified Parallel C)"); break; | |
1234 | default: | |
1235 | printf ("(Unknown: %lx)", uvalue); | |
1236 | break; | |
1237 | } | |
1238 | break; | |
1239 | ||
1240 | case DW_AT_encoding: | |
1241 | switch (uvalue) | |
1242 | { | |
1243 | case DW_ATE_void: printf ("(void)"); break; | |
1244 | case DW_ATE_address: printf ("(machine address)"); break; | |
1245 | case DW_ATE_boolean: printf ("(boolean)"); break; | |
1246 | case DW_ATE_complex_float: printf ("(complex float)"); break; | |
1247 | case DW_ATE_float: printf ("(float)"); break; | |
1248 | case DW_ATE_signed: printf ("(signed)"); break; | |
1249 | case DW_ATE_signed_char: printf ("(signed char)"); break; | |
1250 | case DW_ATE_unsigned: printf ("(unsigned)"); break; | |
1251 | case DW_ATE_unsigned_char: printf ("(unsigned char)"); break; | |
1252 | /* DWARF 2.1 value. */ | |
1253 | case DW_ATE_imaginary_float: printf ("(imaginary float)"); break; | |
1254 | case DW_ATE_decimal_float: printf ("(decimal float)"); break; | |
1255 | default: | |
1256 | if (uvalue >= DW_ATE_lo_user | |
1257 | && uvalue <= DW_ATE_hi_user) | |
1258 | printf ("(user defined type)"); | |
1259 | else | |
1260 | printf ("(unknown type)"); | |
1261 | break; | |
1262 | } | |
1263 | break; | |
1264 | ||
1265 | case DW_AT_accessibility: | |
1266 | switch (uvalue) | |
1267 | { | |
1268 | case DW_ACCESS_public: printf ("(public)"); break; | |
1269 | case DW_ACCESS_protected: printf ("(protected)"); break; | |
1270 | case DW_ACCESS_private: printf ("(private)"); break; | |
1271 | default: | |
1272 | printf ("(unknown accessibility)"); | |
1273 | break; | |
1274 | } | |
1275 | break; | |
1276 | ||
1277 | case DW_AT_visibility: | |
1278 | switch (uvalue) | |
1279 | { | |
1280 | case DW_VIS_local: printf ("(local)"); break; | |
1281 | case DW_VIS_exported: printf ("(exported)"); break; | |
1282 | case DW_VIS_qualified: printf ("(qualified)"); break; | |
1283 | default: printf ("(unknown visibility)"); break; | |
1284 | } | |
1285 | break; | |
1286 | ||
1287 | case DW_AT_virtuality: | |
1288 | switch (uvalue) | |
1289 | { | |
1290 | case DW_VIRTUALITY_none: printf ("(none)"); break; | |
1291 | case DW_VIRTUALITY_virtual: printf ("(virtual)"); break; | |
1292 | case DW_VIRTUALITY_pure_virtual:printf ("(pure_virtual)"); break; | |
1293 | default: printf ("(unknown virtuality)"); break; | |
1294 | } | |
1295 | break; | |
1296 | ||
1297 | case DW_AT_identifier_case: | |
1298 | switch (uvalue) | |
1299 | { | |
1300 | case DW_ID_case_sensitive: printf ("(case_sensitive)"); break; | |
1301 | case DW_ID_up_case: printf ("(up_case)"); break; | |
1302 | case DW_ID_down_case: printf ("(down_case)"); break; | |
1303 | case DW_ID_case_insensitive: printf ("(case_insensitive)"); break; | |
1304 | default: printf ("(unknown case)"); break; | |
1305 | } | |
1306 | break; | |
1307 | ||
1308 | case DW_AT_calling_convention: | |
1309 | switch (uvalue) | |
1310 | { | |
1311 | case DW_CC_normal: printf ("(normal)"); break; | |
1312 | case DW_CC_program: printf ("(program)"); break; | |
1313 | case DW_CC_nocall: printf ("(nocall)"); break; | |
1314 | default: | |
1315 | if (uvalue >= DW_CC_lo_user | |
1316 | && uvalue <= DW_CC_hi_user) | |
1317 | printf ("(user defined)"); | |
1318 | else | |
1319 | printf ("(unknown convention)"); | |
1320 | } | |
1321 | break; | |
1322 | ||
1323 | case DW_AT_ordering: | |
1324 | switch (uvalue) | |
1325 | { | |
1326 | case -1: printf ("(undefined)"); break; | |
1327 | case 0: printf ("(row major)"); break; | |
1328 | case 1: printf ("(column major)"); break; | |
1329 | } | |
1330 | break; | |
1331 | ||
1332 | case DW_AT_frame_base: | |
1333 | have_frame_base = 1; | |
1334 | case DW_AT_location: | |
1335 | case DW_AT_data_member_location: | |
1336 | case DW_AT_vtable_elem_location: | |
1337 | case DW_AT_allocated: | |
1338 | case DW_AT_associated: | |
1339 | case DW_AT_data_location: | |
1340 | case DW_AT_stride: | |
1341 | case DW_AT_upper_bound: | |
1342 | case DW_AT_lower_bound: | |
1343 | if (block_start) | |
1344 | { | |
1345 | int need_frame_base; | |
1346 | ||
1347 | printf ("("); | |
1348 | need_frame_base = decode_location_expression (block_start, | |
1349 | pointer_size, | |
1350 | uvalue, | |
1351 | cu_offset); | |
1352 | printf (")"); | |
1353 | if (need_frame_base && !have_frame_base) | |
1354 | printf (_(" [without DW_AT_frame_base]")); | |
1355 | } | |
1356 | else if (form == DW_FORM_data4 || form == DW_FORM_data8) | |
1357 | printf (_("(location list)")); | |
1358 | ||
1359 | break; | |
1360 | ||
1361 | default: | |
1362 | break; | |
1363 | } | |
1364 | ||
1365 | return data; | |
1366 | } | |
1367 | ||
1368 | static char * | |
1369 | get_AT_name (unsigned long attribute) | |
1370 | { | |
1371 | switch (attribute) | |
1372 | { | |
1373 | case DW_AT_sibling: return "DW_AT_sibling"; | |
1374 | case DW_AT_location: return "DW_AT_location"; | |
1375 | case DW_AT_name: return "DW_AT_name"; | |
1376 | case DW_AT_ordering: return "DW_AT_ordering"; | |
1377 | case DW_AT_subscr_data: return "DW_AT_subscr_data"; | |
1378 | case DW_AT_byte_size: return "DW_AT_byte_size"; | |
1379 | case DW_AT_bit_offset: return "DW_AT_bit_offset"; | |
1380 | case DW_AT_bit_size: return "DW_AT_bit_size"; | |
1381 | case DW_AT_element_list: return "DW_AT_element_list"; | |
1382 | case DW_AT_stmt_list: return "DW_AT_stmt_list"; | |
1383 | case DW_AT_low_pc: return "DW_AT_low_pc"; | |
1384 | case DW_AT_high_pc: return "DW_AT_high_pc"; | |
1385 | case DW_AT_language: return "DW_AT_language"; | |
1386 | case DW_AT_member: return "DW_AT_member"; | |
1387 | case DW_AT_discr: return "DW_AT_discr"; | |
1388 | case DW_AT_discr_value: return "DW_AT_discr_value"; | |
1389 | case DW_AT_visibility: return "DW_AT_visibility"; | |
1390 | case DW_AT_import: return "DW_AT_import"; | |
1391 | case DW_AT_string_length: return "DW_AT_string_length"; | |
1392 | case DW_AT_common_reference: return "DW_AT_common_reference"; | |
1393 | case DW_AT_comp_dir: return "DW_AT_comp_dir"; | |
1394 | case DW_AT_const_value: return "DW_AT_const_value"; | |
1395 | case DW_AT_containing_type: return "DW_AT_containing_type"; | |
1396 | case DW_AT_default_value: return "DW_AT_default_value"; | |
1397 | case DW_AT_inline: return "DW_AT_inline"; | |
1398 | case DW_AT_is_optional: return "DW_AT_is_optional"; | |
1399 | case DW_AT_lower_bound: return "DW_AT_lower_bound"; | |
1400 | case DW_AT_producer: return "DW_AT_producer"; | |
1401 | case DW_AT_prototyped: return "DW_AT_prototyped"; | |
1402 | case DW_AT_return_addr: return "DW_AT_return_addr"; | |
1403 | case DW_AT_start_scope: return "DW_AT_start_scope"; | |
1404 | case DW_AT_stride_size: return "DW_AT_stride_size"; | |
1405 | case DW_AT_upper_bound: return "DW_AT_upper_bound"; | |
1406 | case DW_AT_abstract_origin: return "DW_AT_abstract_origin"; | |
1407 | case DW_AT_accessibility: return "DW_AT_accessibility"; | |
1408 | case DW_AT_address_class: return "DW_AT_address_class"; | |
1409 | case DW_AT_artificial: return "DW_AT_artificial"; | |
1410 | case DW_AT_base_types: return "DW_AT_base_types"; | |
1411 | case DW_AT_calling_convention: return "DW_AT_calling_convention"; | |
1412 | case DW_AT_count: return "DW_AT_count"; | |
1413 | case DW_AT_data_member_location: return "DW_AT_data_member_location"; | |
1414 | case DW_AT_decl_column: return "DW_AT_decl_column"; | |
1415 | case DW_AT_decl_file: return "DW_AT_decl_file"; | |
1416 | case DW_AT_decl_line: return "DW_AT_decl_line"; | |
1417 | case DW_AT_declaration: return "DW_AT_declaration"; | |
1418 | case DW_AT_discr_list: return "DW_AT_discr_list"; | |
1419 | case DW_AT_encoding: return "DW_AT_encoding"; | |
1420 | case DW_AT_external: return "DW_AT_external"; | |
1421 | case DW_AT_frame_base: return "DW_AT_frame_base"; | |
1422 | case DW_AT_friend: return "DW_AT_friend"; | |
1423 | case DW_AT_identifier_case: return "DW_AT_identifier_case"; | |
1424 | case DW_AT_macro_info: return "DW_AT_macro_info"; | |
1425 | case DW_AT_namelist_items: return "DW_AT_namelist_items"; | |
1426 | case DW_AT_priority: return "DW_AT_priority"; | |
1427 | case DW_AT_segment: return "DW_AT_segment"; | |
1428 | case DW_AT_specification: return "DW_AT_specification"; | |
1429 | case DW_AT_static_link: return "DW_AT_static_link"; | |
1430 | case DW_AT_type: return "DW_AT_type"; | |
1431 | case DW_AT_use_location: return "DW_AT_use_location"; | |
1432 | case DW_AT_variable_parameter: return "DW_AT_variable_parameter"; | |
1433 | case DW_AT_virtuality: return "DW_AT_virtuality"; | |
1434 | case DW_AT_vtable_elem_location: return "DW_AT_vtable_elem_location"; | |
1435 | /* DWARF 2.1 values. */ | |
1436 | case DW_AT_allocated: return "DW_AT_allocated"; | |
1437 | case DW_AT_associated: return "DW_AT_associated"; | |
1438 | case DW_AT_data_location: return "DW_AT_data_location"; | |
1439 | case DW_AT_stride: return "DW_AT_stride"; | |
1440 | case DW_AT_entry_pc: return "DW_AT_entry_pc"; | |
1441 | case DW_AT_use_UTF8: return "DW_AT_use_UTF8"; | |
1442 | case DW_AT_extension: return "DW_AT_extension"; | |
1443 | case DW_AT_ranges: return "DW_AT_ranges"; | |
1444 | case DW_AT_trampoline: return "DW_AT_trampoline"; | |
1445 | case DW_AT_call_column: return "DW_AT_call_column"; | |
1446 | case DW_AT_call_file: return "DW_AT_call_file"; | |
1447 | case DW_AT_call_line: return "DW_AT_call_line"; | |
1448 | /* SGI/MIPS extensions. */ | |
1449 | case DW_AT_MIPS_fde: return "DW_AT_MIPS_fde"; | |
1450 | case DW_AT_MIPS_loop_begin: return "DW_AT_MIPS_loop_begin"; | |
1451 | case DW_AT_MIPS_tail_loop_begin: return "DW_AT_MIPS_tail_loop_begin"; | |
1452 | case DW_AT_MIPS_epilog_begin: return "DW_AT_MIPS_epilog_begin"; | |
1453 | case DW_AT_MIPS_loop_unroll_factor: return "DW_AT_MIPS_loop_unroll_factor"; | |
1454 | case DW_AT_MIPS_software_pipeline_depth: | |
1455 | return "DW_AT_MIPS_software_pipeline_depth"; | |
1456 | case DW_AT_MIPS_linkage_name: return "DW_AT_MIPS_linkage_name"; | |
1457 | case DW_AT_MIPS_stride: return "DW_AT_MIPS_stride"; | |
1458 | case DW_AT_MIPS_abstract_name: return "DW_AT_MIPS_abstract_name"; | |
1459 | case DW_AT_MIPS_clone_origin: return "DW_AT_MIPS_clone_origin"; | |
1460 | case DW_AT_MIPS_has_inlines: return "DW_AT_MIPS_has_inlines"; | |
1461 | /* GNU extensions. */ | |
1462 | case DW_AT_sf_names: return "DW_AT_sf_names"; | |
1463 | case DW_AT_src_info: return "DW_AT_src_info"; | |
1464 | case DW_AT_mac_info: return "DW_AT_mac_info"; | |
1465 | case DW_AT_src_coords: return "DW_AT_src_coords"; | |
1466 | case DW_AT_body_begin: return "DW_AT_body_begin"; | |
1467 | case DW_AT_body_end: return "DW_AT_body_end"; | |
1468 | case DW_AT_GNU_vector: return "DW_AT_GNU_vector"; | |
1469 | /* UPC extension. */ | |
1470 | case DW_AT_upc_threads_scaled: return "DW_AT_upc_threads_scaled"; | |
1471 | default: | |
1472 | { | |
1473 | static char buffer[100]; | |
1474 | ||
1475 | snprintf (buffer, sizeof (buffer), _("Unknown AT value: %lx"), | |
1476 | attribute); | |
1477 | return buffer; | |
1478 | } | |
1479 | } | |
1480 | } | |
1481 | ||
1482 | static unsigned char * | |
1483 | read_and_display_attr (unsigned long attribute, | |
1484 | unsigned long form, | |
1485 | unsigned char *data, | |
1486 | unsigned long cu_offset, | |
1487 | unsigned long pointer_size, | |
1488 | unsigned long offset_size, | |
1489 | int dwarf_version, | |
1490 | debug_info *debug_info_p, | |
1491 | int do_loc) | |
1492 | { | |
1493 | if (!do_loc) | |
1494 | printf (" %-18s:", get_AT_name (attribute)); | |
1495 | data = read_and_display_attr_value (attribute, form, data, cu_offset, | |
1496 | pointer_size, offset_size, | |
1497 | dwarf_version, debug_info_p, | |
1498 | do_loc); | |
1499 | if (!do_loc) | |
1500 | printf ("\n"); | |
1501 | return data; | |
1502 | } | |
1503 | ||
1504 | ||
1505 | /* Process the contents of a .debug_info section. If do_loc is non-zero | |
1506 | then we are scanning for location lists and we do not want to display | |
1507 | anything to the user. */ | |
1508 | ||
1509 | static int | |
1510 | process_debug_info (struct dwarf_section *section, void *file, | |
1511 | int do_loc) | |
1512 | { | |
1513 | unsigned char *start = section->start; | |
1514 | unsigned char *end = start + section->size; | |
1515 | unsigned char *section_begin; | |
1516 | unsigned int unit; | |
1517 | unsigned int num_units = 0; | |
1518 | ||
1519 | if ((do_loc || do_debug_loc || do_debug_ranges) | |
1520 | && num_debug_info_entries == 0) | |
1521 | { | |
1522 | unsigned long length; | |
1523 | ||
1524 | /* First scan the section to get the number of comp units. */ | |
1525 | for (section_begin = start, num_units = 0; section_begin < end; | |
1526 | num_units ++) | |
1527 | { | |
1528 | /* Read the first 4 bytes. For a 32-bit DWARF section, this | |
1529 | will be the length. For a 64-bit DWARF section, it'll be | |
1530 | the escape code 0xffffffff followed by an 8 byte length. */ | |
1531 | length = byte_get (section_begin, 4); | |
1532 | ||
1533 | if (length == 0xffffffff) | |
1534 | { | |
1535 | length = byte_get (section_begin + 4, 8); | |
1536 | section_begin += length + 12; | |
1537 | } | |
1538 | else | |
1539 | section_begin += length + 4; | |
1540 | } | |
1541 | ||
1542 | if (num_units == 0) | |
1543 | { | |
1544 | error (_("No comp units in %s section ?"), section->name); | |
1545 | return 0; | |
1546 | } | |
1547 | ||
1548 | /* Then allocate an array to hold the information. */ | |
1549 | debug_information = cmalloc (num_units, | |
1550 | sizeof (* debug_information)); | |
1551 | if (debug_information == NULL) | |
1552 | { | |
1553 | error (_("Not enough memory for a debug info array of %u entries"), | |
1554 | num_units); | |
1555 | return 0; | |
1556 | } | |
1557 | } | |
1558 | ||
1559 | if (!do_loc) | |
1560 | { | |
1561 | printf (_("The section %s contains:\n\n"), section->name); | |
1562 | ||
1563 | load_debug_section (str, file); | |
1564 | } | |
1565 | ||
1566 | load_debug_section (abbrev, file); | |
1567 | if (debug_displays [abbrev].section.start == NULL) | |
1568 | { | |
1569 | warn (_("Unable to locate %s section!\n"), | |
1570 | debug_displays [abbrev].section.name); | |
1571 | return 0; | |
1572 | } | |
1573 | ||
1574 | for (section_begin = start, unit = 0; start < end; unit++) | |
1575 | { | |
1576 | DWARF2_Internal_CompUnit compunit; | |
1577 | unsigned char *hdrptr; | |
1578 | unsigned char *cu_abbrev_offset_ptr; | |
1579 | unsigned char *tags; | |
1580 | int level; | |
1581 | unsigned long cu_offset; | |
1582 | int offset_size; | |
1583 | int initial_length_size; | |
1584 | ||
1585 | hdrptr = start; | |
1586 | ||
1587 | compunit.cu_length = byte_get (hdrptr, 4); | |
1588 | hdrptr += 4; | |
1589 | ||
1590 | if (compunit.cu_length == 0xffffffff) | |
1591 | { | |
1592 | compunit.cu_length = byte_get (hdrptr, 8); | |
1593 | hdrptr += 8; | |
1594 | offset_size = 8; | |
1595 | initial_length_size = 12; | |
1596 | } | |
1597 | else | |
1598 | { | |
1599 | offset_size = 4; | |
1600 | initial_length_size = 4; | |
1601 | } | |
1602 | ||
1603 | compunit.cu_version = byte_get (hdrptr, 2); | |
1604 | hdrptr += 2; | |
1605 | ||
1606 | cu_offset = start - section_begin; | |
1607 | start += compunit.cu_length + initial_length_size; | |
1608 | ||
1609 | cu_abbrev_offset_ptr = hdrptr; | |
1610 | compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size); | |
1611 | hdrptr += offset_size; | |
1612 | ||
1613 | compunit.cu_pointer_size = byte_get (hdrptr, 1); | |
1614 | hdrptr += 1; | |
1615 | if ((do_loc || do_debug_loc || do_debug_ranges) | |
1616 | && num_debug_info_entries == 0) | |
1617 | { | |
1618 | debug_information [unit].cu_offset = cu_offset; | |
1619 | debug_information [unit].pointer_size | |
1620 | = compunit.cu_pointer_size; | |
1621 | debug_information [unit].base_address = 0; | |
1622 | debug_information [unit].loc_offsets = NULL; | |
1623 | debug_information [unit].have_frame_base = NULL; | |
1624 | debug_information [unit].max_loc_offsets = 0; | |
1625 | debug_information [unit].num_loc_offsets = 0; | |
1626 | debug_information [unit].range_lists = NULL; | |
1627 | debug_information [unit].max_range_lists= 0; | |
1628 | debug_information [unit].num_range_lists = 0; | |
1629 | } | |
1630 | ||
1631 | tags = hdrptr; | |
1632 | ||
1633 | if (!do_loc) | |
1634 | { | |
1635 | printf (_(" Compilation Unit @ offset 0x%lx:\n"), cu_offset); | |
1636 | printf (_(" Length: %ld\n"), compunit.cu_length); | |
1637 | printf (_(" Version: %d\n"), compunit.cu_version); | |
1638 | printf (_(" Abbrev Offset: %ld\n"), compunit.cu_abbrev_offset); | |
1639 | printf (_(" Pointer Size: %d\n"), compunit.cu_pointer_size); | |
1640 | } | |
1641 | ||
1642 | if (compunit.cu_version != 2 && compunit.cu_version != 3) | |
1643 | { | |
1644 | warn (_("Only version 2 and 3 DWARF debug information is currently supported.\n")); | |
1645 | continue; | |
1646 | } | |
1647 | ||
1648 | free_abbrevs (); | |
1649 | ||
bfe2612a L |
1650 | /* Process the abbrevs used by this compilation unit. DWARF |
1651 | sections under Mach-O have non-zero addresses. */ | |
19e6b90e L |
1652 | process_abbrev_section |
1653 | ((unsigned char *) debug_displays [abbrev].section.start | |
bfe2612a | 1654 | + compunit.cu_abbrev_offset - debug_displays [abbrev].section.address, |
19e6b90e L |
1655 | (unsigned char *) debug_displays [abbrev].section.start |
1656 | + debug_displays [abbrev].section.size); | |
1657 | ||
1658 | level = 0; | |
1659 | while (tags < start) | |
1660 | { | |
1661 | unsigned int bytes_read; | |
1662 | unsigned long abbrev_number; | |
1663 | abbrev_entry *entry; | |
1664 | abbrev_attr *attr; | |
1665 | ||
1666 | abbrev_number = read_leb128 (tags, & bytes_read, 0); | |
1667 | tags += bytes_read; | |
1668 | ||
1669 | /* A null DIE marks the end of a list of children. */ | |
1670 | if (abbrev_number == 0) | |
1671 | { | |
1672 | --level; | |
1673 | continue; | |
1674 | } | |
1675 | ||
1676 | /* Scan through the abbreviation list until we reach the | |
1677 | correct entry. */ | |
1678 | for (entry = first_abbrev; | |
1679 | entry && entry->entry != abbrev_number; | |
1680 | entry = entry->next) | |
1681 | continue; | |
1682 | ||
1683 | if (entry == NULL) | |
1684 | { | |
1685 | warn (_("Unable to locate entry %lu in the abbreviation table\n"), | |
1686 | abbrev_number); | |
1687 | return 0; | |
1688 | } | |
1689 | ||
1690 | if (!do_loc) | |
1691 | printf (_(" <%d><%lx>: Abbrev Number: %lu (%s)\n"), | |
1692 | level, | |
1693 | (unsigned long) (tags - section_begin | |
1694 | - bytes_read), | |
1695 | abbrev_number, | |
1696 | get_TAG_name (entry->tag)); | |
1697 | ||
1698 | switch (entry->tag) | |
1699 | { | |
1700 | default: | |
1701 | need_base_address = 0; | |
1702 | break; | |
1703 | case DW_TAG_compile_unit: | |
1704 | need_base_address = 1; | |
1705 | break; | |
1706 | case DW_TAG_entry_point: | |
1707 | case DW_TAG_inlined_subroutine: | |
1708 | case DW_TAG_subprogram: | |
1709 | need_base_address = 0; | |
1710 | /* Assuming that there is no DW_AT_frame_base. */ | |
1711 | have_frame_base = 0; | |
1712 | break; | |
1713 | } | |
1714 | ||
1715 | for (attr = entry->first_attr; attr; attr = attr->next) | |
1716 | tags = read_and_display_attr (attr->attribute, | |
1717 | attr->form, | |
1718 | tags, cu_offset, | |
1719 | compunit.cu_pointer_size, | |
1720 | offset_size, | |
1721 | compunit.cu_version, | |
1722 | &debug_information [unit], | |
1723 | do_loc); | |
1724 | ||
1725 | if (entry->children) | |
1726 | ++level; | |
1727 | } | |
1728 | } | |
1729 | ||
1730 | /* Set num_debug_info_entries here so that it can be used to check if | |
1731 | we need to process .debug_loc and .debug_ranges sections. */ | |
1732 | if ((do_loc || do_debug_loc || do_debug_ranges) | |
1733 | && num_debug_info_entries == 0) | |
1734 | num_debug_info_entries = num_units; | |
1735 | ||
1736 | if (!do_loc) | |
1737 | { | |
1738 | printf ("\n"); | |
1739 | } | |
1740 | ||
1741 | return 1; | |
1742 | } | |
1743 | ||
1744 | /* Locate and scan the .debug_info section in the file and record the pointer | |
1745 | sizes and offsets for the compilation units in it. Usually an executable | |
1746 | will have just one pointer size, but this is not guaranteed, and so we try | |
1747 | not to make any assumptions. Returns zero upon failure, or the number of | |
1748 | compilation units upon success. */ | |
1749 | ||
1750 | static unsigned int | |
1751 | load_debug_info (void * file) | |
1752 | { | |
1753 | /* Reset the last pointer size so that we can issue correct error | |
1754 | messages if we are displaying the contents of more than one section. */ | |
1755 | last_pointer_size = 0; | |
1756 | warned_about_missing_comp_units = FALSE; | |
1757 | ||
1758 | /* If we already have the information there is nothing else to do. */ | |
1759 | if (num_debug_info_entries > 0) | |
1760 | return num_debug_info_entries; | |
1761 | ||
1762 | if (load_debug_section (info, file) | |
1763 | && process_debug_info (&debug_displays [info].section, file, 1)) | |
1764 | return num_debug_info_entries; | |
1765 | else | |
1766 | return 0; | |
1767 | } | |
1768 | ||
1769 | /* Retrieve the pointer size associated with the given compilation unit. | |
1770 | Optionally the offset of this unit into the .debug_info section is | |
1771 | also retutned. If there is no .debug_info section then an error | |
1772 | message is issued and 0 is returned. If the requested comp unit has | |
1773 | not been defined in the .debug_info section then a warning message | |
1774 | is issued and the last know pointer size is returned. This message | |
1775 | is only issued once per section dumped per file dumped. */ | |
1776 | ||
1777 | static unsigned int | |
1778 | get_pointer_size_and_offset_of_comp_unit (unsigned int comp_unit, | |
1779 | const char * section_name, | |
1780 | unsigned long * offset_return) | |
1781 | { | |
1782 | unsigned long offset = 0; | |
1783 | ||
1784 | if (num_debug_info_entries == 0) | |
1785 | error (_("%s section needs a populated .debug_info section\n"), | |
1786 | section_name); | |
1787 | ||
1788 | else if (comp_unit >= num_debug_info_entries) | |
1789 | { | |
1790 | if (!warned_about_missing_comp_units) | |
1791 | { | |
1792 | warn (_("%s section has more comp units than .debug_info section\n"), | |
1793 | section_name); | |
1794 | warn (_("assuming that the pointer size is %d, from the last comp unit in .debug_info\n\n"), | |
1795 | last_pointer_size); | |
1796 | warned_about_missing_comp_units = TRUE; | |
1797 | } | |
1798 | } | |
1799 | else | |
1800 | { | |
1801 | last_pointer_size = debug_information [comp_unit].pointer_size; | |
1802 | offset = debug_information [comp_unit].cu_offset; | |
1803 | } | |
1804 | ||
1805 | if (offset_return != NULL) | |
1806 | * offset_return = offset; | |
1807 | ||
1808 | return last_pointer_size; | |
1809 | } | |
1810 | ||
1811 | static int | |
1812 | display_debug_lines (struct dwarf_section *section, void *file) | |
1813 | { | |
1814 | unsigned char *start = section->start; | |
1815 | unsigned char *data = start; | |
1816 | unsigned char *end = start + section->size; | |
1817 | unsigned int comp_unit = 0; | |
1818 | ||
1819 | printf (_("\nDump of debug contents of section %s:\n\n"), | |
1820 | section->name); | |
1821 | ||
1822 | load_debug_info (file); | |
1823 | ||
1824 | while (data < end) | |
1825 | { | |
1826 | DWARF2_Internal_LineInfo info; | |
1827 | unsigned char *standard_opcodes; | |
1828 | unsigned char *end_of_sequence; | |
1829 | unsigned char *hdrptr; | |
1830 | unsigned int pointer_size; | |
1831 | int initial_length_size; | |
1832 | int offset_size; | |
1833 | int i; | |
1834 | ||
1835 | hdrptr = data; | |
1836 | ||
1837 | /* Check the length of the block. */ | |
1838 | info.li_length = byte_get (hdrptr, 4); | |
1839 | hdrptr += 4; | |
1840 | ||
1841 | if (info.li_length == 0xffffffff) | |
1842 | { | |
1843 | /* This section is 64-bit DWARF 3. */ | |
1844 | info.li_length = byte_get (hdrptr, 8); | |
1845 | hdrptr += 8; | |
1846 | offset_size = 8; | |
1847 | initial_length_size = 12; | |
1848 | } | |
1849 | else | |
1850 | { | |
1851 | offset_size = 4; | |
1852 | initial_length_size = 4; | |
1853 | } | |
1854 | ||
1855 | if (info.li_length + initial_length_size > section->size) | |
1856 | { | |
1857 | warn | |
1858 | (_("The line info appears to be corrupt - the section is too small\n")); | |
1859 | return 0; | |
1860 | } | |
1861 | ||
1862 | /* Check its version number. */ | |
1863 | info.li_version = byte_get (hdrptr, 2); | |
1864 | hdrptr += 2; | |
1865 | if (info.li_version != 2 && info.li_version != 3) | |
1866 | { | |
1867 | warn (_("Only DWARF version 2 and 3 line info is currently supported.\n")); | |
1868 | return 0; | |
1869 | } | |
1870 | ||
1871 | info.li_prologue_length = byte_get (hdrptr, offset_size); | |
1872 | hdrptr += offset_size; | |
1873 | info.li_min_insn_length = byte_get (hdrptr, 1); | |
1874 | hdrptr++; | |
1875 | info.li_default_is_stmt = byte_get (hdrptr, 1); | |
1876 | hdrptr++; | |
1877 | info.li_line_base = byte_get (hdrptr, 1); | |
1878 | hdrptr++; | |
1879 | info.li_line_range = byte_get (hdrptr, 1); | |
1880 | hdrptr++; | |
1881 | info.li_opcode_base = byte_get (hdrptr, 1); | |
1882 | hdrptr++; | |
1883 | ||
1884 | /* Sign extend the line base field. */ | |
1885 | info.li_line_base <<= 24; | |
1886 | info.li_line_base >>= 24; | |
1887 | ||
1888 | /* Get the pointer size from the comp unit associated | |
1889 | with this block of line number information. */ | |
1890 | pointer_size = get_pointer_size_and_offset_of_comp_unit | |
1891 | (comp_unit, ".debug_line", NULL); | |
1892 | comp_unit ++; | |
1893 | ||
1894 | printf (_(" Length: %ld\n"), info.li_length); | |
1895 | printf (_(" DWARF Version: %d\n"), info.li_version); | |
1896 | printf (_(" Prologue Length: %d\n"), info.li_prologue_length); | |
1897 | printf (_(" Minimum Instruction Length: %d\n"), info.li_min_insn_length); | |
1898 | printf (_(" Initial value of 'is_stmt': %d\n"), info.li_default_is_stmt); | |
1899 | printf (_(" Line Base: %d\n"), info.li_line_base); | |
1900 | printf (_(" Line Range: %d\n"), info.li_line_range); | |
1901 | printf (_(" Opcode Base: %d\n"), info.li_opcode_base); | |
1902 | printf (_(" (Pointer size: %u)%s\n"), | |
1903 | pointer_size, | |
1904 | warned_about_missing_comp_units ? " [assumed]" : "" ); | |
1905 | ||
1906 | end_of_sequence = data + info.li_length + initial_length_size; | |
1907 | ||
1908 | reset_state_machine (info.li_default_is_stmt); | |
1909 | ||
1910 | /* Display the contents of the Opcodes table. */ | |
1911 | standard_opcodes = hdrptr; | |
1912 | ||
1913 | printf (_("\n Opcodes:\n")); | |
1914 | ||
1915 | for (i = 1; i < info.li_opcode_base; i++) | |
1916 | printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]); | |
1917 | ||
1918 | /* Display the contents of the Directory table. */ | |
1919 | data = standard_opcodes + info.li_opcode_base - 1; | |
1920 | ||
1921 | if (*data == 0) | |
1922 | printf (_("\n The Directory Table is empty.\n")); | |
1923 | else | |
1924 | { | |
1925 | printf (_("\n The Directory Table:\n")); | |
1926 | ||
1927 | while (*data != 0) | |
1928 | { | |
1929 | printf (_(" %s\n"), data); | |
1930 | ||
1931 | data += strlen ((char *) data) + 1; | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | /* Skip the NUL at the end of the table. */ | |
1936 | data++; | |
1937 | ||
1938 | /* Display the contents of the File Name table. */ | |
1939 | if (*data == 0) | |
1940 | printf (_("\n The File Name Table is empty.\n")); | |
1941 | else | |
1942 | { | |
1943 | printf (_("\n The File Name Table:\n")); | |
1944 | printf (_(" Entry\tDir\tTime\tSize\tName\n")); | |
1945 | ||
1946 | while (*data != 0) | |
1947 | { | |
1948 | unsigned char *name; | |
1949 | unsigned int bytes_read; | |
1950 | ||
1951 | printf (_(" %d\t"), ++state_machine_regs.last_file_entry); | |
1952 | name = data; | |
1953 | ||
1954 | data += strlen ((char *) data) + 1; | |
1955 | ||
1956 | printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); | |
1957 | data += bytes_read; | |
1958 | printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); | |
1959 | data += bytes_read; | |
1960 | printf (_("%lu\t"), read_leb128 (data, & bytes_read, 0)); | |
1961 | data += bytes_read; | |
1962 | printf (_("%s\n"), name); | |
1963 | } | |
1964 | } | |
1965 | ||
1966 | /* Skip the NUL at the end of the table. */ | |
1967 | data++; | |
1968 | ||
1969 | /* Now display the statements. */ | |
1970 | printf (_("\n Line Number Statements:\n")); | |
1971 | ||
1972 | while (data < end_of_sequence) | |
1973 | { | |
1974 | unsigned char op_code; | |
1975 | int adv; | |
1976 | unsigned long int uladv; | |
1977 | unsigned int bytes_read; | |
1978 | ||
1979 | op_code = *data++; | |
1980 | ||
1981 | if (op_code >= info.li_opcode_base) | |
1982 | { | |
1983 | op_code -= info.li_opcode_base; | |
1984 | uladv = (op_code / info.li_line_range) * info.li_min_insn_length; | |
1985 | state_machine_regs.address += uladv; | |
1986 | printf (_(" Special opcode %d: advance Address by %lu to 0x%lx"), | |
1987 | op_code, uladv, state_machine_regs.address); | |
1988 | adv = (op_code % info.li_line_range) + info.li_line_base; | |
1989 | state_machine_regs.line += adv; | |
1990 | printf (_(" and Line by %d to %d\n"), | |
1991 | adv, state_machine_regs.line); | |
1992 | } | |
1993 | else switch (op_code) | |
1994 | { | |
1995 | case DW_LNS_extended_op: | |
1996 | if (pointer_size == 0) | |
1997 | { | |
1998 | warn (_("Extend line ops need a valid pointer size, guessing at 4\n")); | |
1999 | pointer_size = 4; | |
2000 | } | |
2001 | ||
2002 | data += process_extended_line_op (data, info.li_default_is_stmt, | |
2003 | pointer_size); | |
2004 | break; | |
2005 | ||
2006 | case DW_LNS_copy: | |
2007 | printf (_(" Copy\n")); | |
2008 | break; | |
2009 | ||
2010 | case DW_LNS_advance_pc: | |
2011 | uladv = read_leb128 (data, & bytes_read, 0); | |
2012 | uladv *= info.li_min_insn_length; | |
2013 | data += bytes_read; | |
2014 | state_machine_regs.address += uladv; | |
2015 | printf (_(" Advance PC by %lu to 0x%lx\n"), uladv, | |
2016 | state_machine_regs.address); | |
2017 | break; | |
2018 | ||
2019 | case DW_LNS_advance_line: | |
2020 | adv = read_leb128 (data, & bytes_read, 1); | |
2021 | data += bytes_read; | |
2022 | state_machine_regs.line += adv; | |
2023 | printf (_(" Advance Line by %d to %d\n"), adv, | |
2024 | state_machine_regs.line); | |
2025 | break; | |
2026 | ||
2027 | case DW_LNS_set_file: | |
2028 | adv = read_leb128 (data, & bytes_read, 0); | |
2029 | data += bytes_read; | |
2030 | printf (_(" Set File Name to entry %d in the File Name Table\n"), | |
2031 | adv); | |
2032 | state_machine_regs.file = adv; | |
2033 | break; | |
2034 | ||
2035 | case DW_LNS_set_column: | |
2036 | uladv = read_leb128 (data, & bytes_read, 0); | |
2037 | data += bytes_read; | |
2038 | printf (_(" Set column to %lu\n"), uladv); | |
2039 | state_machine_regs.column = uladv; | |
2040 | break; | |
2041 | ||
2042 | case DW_LNS_negate_stmt: | |
2043 | adv = state_machine_regs.is_stmt; | |
2044 | adv = ! adv; | |
2045 | printf (_(" Set is_stmt to %d\n"), adv); | |
2046 | state_machine_regs.is_stmt = adv; | |
2047 | break; | |
2048 | ||
2049 | case DW_LNS_set_basic_block: | |
2050 | printf (_(" Set basic block\n")); | |
2051 | state_machine_regs.basic_block = 1; | |
2052 | break; | |
2053 | ||
2054 | case DW_LNS_const_add_pc: | |
2055 | uladv = (((255 - info.li_opcode_base) / info.li_line_range) | |
2056 | * info.li_min_insn_length); | |
2057 | state_machine_regs.address += uladv; | |
2058 | printf (_(" Advance PC by constant %lu to 0x%lx\n"), uladv, | |
2059 | state_machine_regs.address); | |
2060 | break; | |
2061 | ||
2062 | case DW_LNS_fixed_advance_pc: | |
2063 | uladv = byte_get (data, 2); | |
2064 | data += 2; | |
2065 | state_machine_regs.address += uladv; | |
2066 | printf (_(" Advance PC by fixed size amount %lu to 0x%lx\n"), | |
2067 | uladv, state_machine_regs.address); | |
2068 | break; | |
2069 | ||
2070 | case DW_LNS_set_prologue_end: | |
2071 | printf (_(" Set prologue_end to true\n")); | |
2072 | break; | |
2073 | ||
2074 | case DW_LNS_set_epilogue_begin: | |
2075 | printf (_(" Set epilogue_begin to true\n")); | |
2076 | break; | |
2077 | ||
2078 | case DW_LNS_set_isa: | |
2079 | uladv = read_leb128 (data, & bytes_read, 0); | |
2080 | data += bytes_read; | |
2081 | printf (_(" Set ISA to %lu\n"), uladv); | |
2082 | break; | |
2083 | ||
2084 | default: | |
2085 | printf (_(" Unknown opcode %d with operands: "), op_code); | |
2086 | ||
2087 | for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) | |
2088 | { | |
2089 | printf ("0x%lx%s", read_leb128 (data, &bytes_read, 0), | |
2090 | i == 1 ? "" : ", "); | |
2091 | data += bytes_read; | |
2092 | } | |
2093 | putchar ('\n'); | |
2094 | break; | |
2095 | } | |
2096 | } | |
2097 | putchar ('\n'); | |
2098 | } | |
2099 | ||
2100 | return 1; | |
2101 | } | |
2102 | ||
2103 | static int | |
2104 | display_debug_pubnames (struct dwarf_section *section, | |
2105 | void *file ATTRIBUTE_UNUSED) | |
2106 | { | |
2107 | DWARF2_Internal_PubNames pubnames; | |
2108 | unsigned char *start = section->start; | |
2109 | unsigned char *end = start + section->size; | |
2110 | ||
2111 | printf (_("Contents of the %s section:\n\n"), section->name); | |
2112 | ||
2113 | while (start < end) | |
2114 | { | |
2115 | unsigned char *data; | |
2116 | unsigned long offset; | |
2117 | int offset_size, initial_length_size; | |
2118 | ||
2119 | data = start; | |
2120 | ||
2121 | pubnames.pn_length = byte_get (data, 4); | |
2122 | data += 4; | |
2123 | if (pubnames.pn_length == 0xffffffff) | |
2124 | { | |
2125 | pubnames.pn_length = byte_get (data, 8); | |
2126 | data += 8; | |
2127 | offset_size = 8; | |
2128 | initial_length_size = 12; | |
2129 | } | |
2130 | else | |
2131 | { | |
2132 | offset_size = 4; | |
2133 | initial_length_size = 4; | |
2134 | } | |
2135 | ||
2136 | pubnames.pn_version = byte_get (data, 2); | |
2137 | data += 2; | |
2138 | pubnames.pn_offset = byte_get (data, offset_size); | |
2139 | data += offset_size; | |
2140 | pubnames.pn_size = byte_get (data, offset_size); | |
2141 | data += offset_size; | |
2142 | ||
2143 | start += pubnames.pn_length + initial_length_size; | |
2144 | ||
2145 | if (pubnames.pn_version != 2 && pubnames.pn_version != 3) | |
2146 | { | |
2147 | static int warned = 0; | |
2148 | ||
2149 | if (! warned) | |
2150 | { | |
2151 | warn (_("Only DWARF 2 and 3 pubnames are currently supported\n")); | |
2152 | warned = 1; | |
2153 | } | |
2154 | ||
2155 | continue; | |
2156 | } | |
2157 | ||
2158 | printf (_(" Length: %ld\n"), | |
2159 | pubnames.pn_length); | |
2160 | printf (_(" Version: %d\n"), | |
2161 | pubnames.pn_version); | |
2162 | printf (_(" Offset into .debug_info section: %ld\n"), | |
2163 | pubnames.pn_offset); | |
2164 | printf (_(" Size of area in .debug_info section: %ld\n"), | |
2165 | pubnames.pn_size); | |
2166 | ||
2167 | printf (_("\n Offset\tName\n")); | |
2168 | ||
2169 | do | |
2170 | { | |
2171 | offset = byte_get (data, offset_size); | |
2172 | ||
2173 | if (offset != 0) | |
2174 | { | |
2175 | data += offset_size; | |
2176 | printf (" %-6ld\t\t%s\n", offset, data); | |
2177 | data += strlen ((char *) data) + 1; | |
2178 | } | |
2179 | } | |
2180 | while (offset != 0); | |
2181 | } | |
2182 | ||
2183 | printf ("\n"); | |
2184 | return 1; | |
2185 | } | |
2186 | ||
2187 | static int | |
2188 | display_debug_macinfo (struct dwarf_section *section, | |
2189 | void *file ATTRIBUTE_UNUSED) | |
2190 | { | |
2191 | unsigned char *start = section->start; | |
2192 | unsigned char *end = start + section->size; | |
2193 | unsigned char *curr = start; | |
2194 | unsigned int bytes_read; | |
2195 | enum dwarf_macinfo_record_type op; | |
2196 | ||
2197 | printf (_("Contents of the %s section:\n\n"), section->name); | |
2198 | ||
2199 | while (curr < end) | |
2200 | { | |
2201 | unsigned int lineno; | |
2202 | const char *string; | |
2203 | ||
2204 | op = *curr; | |
2205 | curr++; | |
2206 | ||
2207 | switch (op) | |
2208 | { | |
2209 | case DW_MACINFO_start_file: | |
2210 | { | |
2211 | unsigned int filenum; | |
2212 | ||
2213 | lineno = read_leb128 (curr, & bytes_read, 0); | |
2214 | curr += bytes_read; | |
2215 | filenum = read_leb128 (curr, & bytes_read, 0); | |
2216 | curr += bytes_read; | |
2217 | ||
2218 | printf (_(" DW_MACINFO_start_file - lineno: %d filenum: %d\n"), | |
2219 | lineno, filenum); | |
2220 | } | |
2221 | break; | |
2222 | ||
2223 | case DW_MACINFO_end_file: | |
2224 | printf (_(" DW_MACINFO_end_file\n")); | |
2225 | break; | |
2226 | ||
2227 | case DW_MACINFO_define: | |
2228 | lineno = read_leb128 (curr, & bytes_read, 0); | |
2229 | curr += bytes_read; | |
2230 | string = (char *) curr; | |
2231 | curr += strlen (string) + 1; | |
2232 | printf (_(" DW_MACINFO_define - lineno : %d macro : %s\n"), | |
2233 | lineno, string); | |
2234 | break; | |
2235 | ||
2236 | case DW_MACINFO_undef: | |
2237 | lineno = read_leb128 (curr, & bytes_read, 0); | |
2238 | curr += bytes_read; | |
2239 | string = (char *) curr; | |
2240 | curr += strlen (string) + 1; | |
2241 | printf (_(" DW_MACINFO_undef - lineno : %d macro : %s\n"), | |
2242 | lineno, string); | |
2243 | break; | |
2244 | ||
2245 | case DW_MACINFO_vendor_ext: | |
2246 | { | |
2247 | unsigned int constant; | |
2248 | ||
2249 | constant = read_leb128 (curr, & bytes_read, 0); | |
2250 | curr += bytes_read; | |
2251 | string = (char *) curr; | |
2252 | curr += strlen (string) + 1; | |
2253 | printf (_(" DW_MACINFO_vendor_ext - constant : %d string : %s\n"), | |
2254 | constant, string); | |
2255 | } | |
2256 | break; | |
2257 | } | |
2258 | } | |
2259 | ||
2260 | return 1; | |
2261 | } | |
2262 | ||
2263 | static int | |
2264 | display_debug_abbrev (struct dwarf_section *section, | |
2265 | void *file ATTRIBUTE_UNUSED) | |
2266 | { | |
2267 | abbrev_entry *entry; | |
2268 | unsigned char *start = section->start; | |
2269 | unsigned char *end = start + section->size; | |
2270 | ||
2271 | printf (_("Contents of the %s section:\n\n"), section->name); | |
2272 | ||
2273 | do | |
2274 | { | |
2275 | free_abbrevs (); | |
2276 | ||
2277 | start = process_abbrev_section (start, end); | |
2278 | ||
2279 | if (first_abbrev == NULL) | |
2280 | continue; | |
2281 | ||
2282 | printf (_(" Number TAG\n")); | |
2283 | ||
2284 | for (entry = first_abbrev; entry; entry = entry->next) | |
2285 | { | |
2286 | abbrev_attr *attr; | |
2287 | ||
2288 | printf (_(" %ld %s [%s]\n"), | |
2289 | entry->entry, | |
2290 | get_TAG_name (entry->tag), | |
2291 | entry->children ? _("has children") : _("no children")); | |
2292 | ||
2293 | for (attr = entry->first_attr; attr; attr = attr->next) | |
2294 | printf (_(" %-18s %s\n"), | |
2295 | get_AT_name (attr->attribute), | |
2296 | get_FORM_name (attr->form)); | |
2297 | } | |
2298 | } | |
2299 | while (start); | |
2300 | ||
2301 | printf ("\n"); | |
2302 | ||
2303 | return 1; | |
2304 | } | |
2305 | ||
2306 | static int | |
2307 | display_debug_loc (struct dwarf_section *section, void *file) | |
2308 | { | |
2309 | unsigned char *start = section->start; | |
2310 | unsigned char *section_end; | |
2311 | unsigned long bytes; | |
2312 | unsigned char *section_begin = start; | |
2313 | unsigned int num_loc_list = 0; | |
2314 | unsigned long last_offset = 0; | |
2315 | unsigned int first = 0; | |
2316 | unsigned int i; | |
2317 | unsigned int j; | |
2318 | int seen_first_offset = 0; | |
2319 | int use_debug_info = 1; | |
2320 | unsigned char *next; | |
2321 | ||
2322 | bytes = section->size; | |
2323 | section_end = start + bytes; | |
2324 | ||
2325 | if (bytes == 0) | |
2326 | { | |
2327 | printf (_("\nThe %s section is empty.\n"), section->name); | |
2328 | return 0; | |
2329 | } | |
2330 | ||
2331 | load_debug_info (file); | |
2332 | ||
2333 | /* Check the order of location list in .debug_info section. If | |
2334 | offsets of location lists are in the ascending order, we can | |
2335 | use `debug_information' directly. */ | |
2336 | for (i = 0; i < num_debug_info_entries; i++) | |
2337 | { | |
2338 | unsigned int num; | |
2339 | ||
2340 | num = debug_information [i].num_loc_offsets; | |
2341 | num_loc_list += num; | |
2342 | ||
2343 | /* Check if we can use `debug_information' directly. */ | |
2344 | if (use_debug_info && num != 0) | |
2345 | { | |
2346 | if (!seen_first_offset) | |
2347 | { | |
2348 | /* This is the first location list. */ | |
2349 | last_offset = debug_information [i].loc_offsets [0]; | |
2350 | first = i; | |
2351 | seen_first_offset = 1; | |
2352 | j = 1; | |
2353 | } | |
2354 | else | |
2355 | j = 0; | |
2356 | ||
2357 | for (; j < num; j++) | |
2358 | { | |
2359 | if (last_offset > | |
2360 | debug_information [i].loc_offsets [j]) | |
2361 | { | |
2362 | use_debug_info = 0; | |
2363 | break; | |
2364 | } | |
2365 | last_offset = debug_information [i].loc_offsets [j]; | |
2366 | } | |
2367 | } | |
2368 | } | |
2369 | ||
2370 | if (!use_debug_info) | |
2371 | /* FIXME: Should we handle this case? */ | |
2372 | error (_("Location lists in .debug_info section aren't in ascending order!\n")); | |
2373 | ||
2374 | if (!seen_first_offset) | |
2375 | error (_("No location lists in .debug_info section!\n")); | |
2376 | ||
bfe2612a L |
2377 | /* DWARF sections under Mach-O have non-zero addresses. */ |
2378 | if (debug_information [first].loc_offsets [0] != section->address) | |
19e6b90e L |
2379 | warn (_("Location lists in %s section start at 0x%lx\n"), |
2380 | section->name, debug_information [first].loc_offsets [0]); | |
2381 | ||
2382 | printf (_("Contents of the %s section:\n\n"), section->name); | |
2383 | printf (_(" Offset Begin End Expression\n")); | |
2384 | ||
2385 | seen_first_offset = 0; | |
2386 | for (i = first; i < num_debug_info_entries; i++) | |
2387 | { | |
2388 | unsigned long begin; | |
2389 | unsigned long end; | |
2390 | unsigned short length; | |
2391 | unsigned long offset; | |
2392 | unsigned int pointer_size; | |
2393 | unsigned long cu_offset; | |
2394 | unsigned long base_address; | |
2395 | int need_frame_base; | |
2396 | int has_frame_base; | |
2397 | ||
2398 | pointer_size = debug_information [i].pointer_size; | |
2399 | cu_offset = debug_information [i].cu_offset; | |
2400 | ||
2401 | for (j = 0; j < debug_information [i].num_loc_offsets; j++) | |
2402 | { | |
2403 | has_frame_base = debug_information [i].have_frame_base [j]; | |
bfe2612a L |
2404 | /* DWARF sections under Mach-O have non-zero addresses. */ |
2405 | offset = debug_information [i].loc_offsets [j] - section->address; | |
19e6b90e L |
2406 | next = section_begin + offset; |
2407 | base_address = debug_information [i].base_address; | |
2408 | ||
2409 | if (!seen_first_offset) | |
2410 | seen_first_offset = 1; | |
2411 | else | |
2412 | { | |
2413 | if (start < next) | |
2414 | warn (_("There is a hole [0x%lx - 0x%lx] in .debug_loc section.\n"), | |
2415 | (long)(start - section_begin), (long)(next - section_begin)); | |
2416 | else if (start > next) | |
2417 | warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"), | |
2418 | (long)(start - section_begin), (long)(next - section_begin)); | |
2419 | } | |
2420 | start = next; | |
2421 | ||
2422 | if (offset >= bytes) | |
2423 | { | |
2424 | warn (_("Offset 0x%lx is bigger than .debug_loc section size.\n"), | |
2425 | offset); | |
2426 | continue; | |
2427 | } | |
2428 | ||
2429 | while (1) | |
2430 | { | |
2431 | if (start + 2 * pointer_size > section_end) | |
2432 | { | |
2433 | warn (_("Location list starting at offset 0x%lx is not terminated.\n"), | |
2434 | offset); | |
2435 | break; | |
2436 | } | |
2437 | ||
2438 | begin = byte_get (start, pointer_size); | |
2439 | start += pointer_size; | |
2440 | end = byte_get (start, pointer_size); | |
2441 | start += pointer_size; | |
2442 | ||
2443 | if (begin == 0 && end == 0) | |
2444 | { | |
2445 | printf (_(" %8.8lx <End of list>\n"), offset); | |
2446 | break; | |
2447 | } | |
2448 | ||
2449 | /* Check base address specifiers. */ | |
2450 | if (begin == -1UL && end != -1UL) | |
2451 | { | |
2452 | base_address = end; | |
2453 | printf (_(" %8.8lx %8.8lx %8.8lx (base address)\n"), | |
2454 | offset, begin, end); | |
2455 | continue; | |
2456 | } | |
2457 | ||
2458 | if (start + 2 > section_end) | |
2459 | { | |
2460 | warn (_("Location list starting at offset 0x%lx is not terminated.\n"), | |
2461 | offset); | |
2462 | break; | |
2463 | } | |
2464 | ||
2465 | length = byte_get (start, 2); | |
2466 | start += 2; | |
2467 | ||
2468 | if (start + length > section_end) | |
2469 | { | |
2470 | warn (_("Location list starting at offset 0x%lx is not terminated.\n"), | |
2471 | offset); | |
2472 | break; | |
2473 | } | |
2474 | ||
2475 | printf (" %8.8lx %8.8lx %8.8lx (", | |
2476 | offset, begin + base_address, end + base_address); | |
2477 | need_frame_base = decode_location_expression (start, | |
2478 | pointer_size, | |
2479 | length, | |
2480 | cu_offset); | |
2481 | putchar (')'); | |
2482 | ||
2483 | if (need_frame_base && !has_frame_base) | |
2484 | printf (_(" [without DW_AT_frame_base]")); | |
2485 | ||
2486 | if (begin == end) | |
2487 | fputs (_(" (start == end)"), stdout); | |
2488 | else if (begin > end) | |
2489 | fputs (_(" (start > end)"), stdout); | |
2490 | ||
2491 | putchar ('\n'); | |
2492 | ||
2493 | start += length; | |
2494 | } | |
2495 | } | |
2496 | } | |
2497 | return 1; | |
2498 | } | |
2499 | ||
2500 | static int | |
2501 | display_debug_str (struct dwarf_section *section, | |
2502 | void *file ATTRIBUTE_UNUSED) | |
2503 | { | |
2504 | unsigned char *start = section->start; | |
2505 | unsigned long bytes = section->size; | |
2506 | dwarf_vma addr = section->address; | |
2507 | ||
2508 | if (bytes == 0) | |
2509 | { | |
2510 | printf (_("\nThe %s section is empty.\n"), section->name); | |
2511 | return 0; | |
2512 | } | |
2513 | ||
2514 | printf (_("Contents of the %s section:\n\n"), section->name); | |
2515 | ||
2516 | while (bytes) | |
2517 | { | |
2518 | int j; | |
2519 | int k; | |
2520 | int lbytes; | |
2521 | ||
2522 | lbytes = (bytes > 16 ? 16 : bytes); | |
2523 | ||
2524 | printf (" 0x%8.8lx ", (unsigned long) addr); | |
2525 | ||
2526 | for (j = 0; j < 16; j++) | |
2527 | { | |
2528 | if (j < lbytes) | |
2529 | printf ("%2.2x", start[j]); | |
2530 | else | |
2531 | printf (" "); | |
2532 | ||
2533 | if ((j & 3) == 3) | |
2534 | printf (" "); | |
2535 | } | |
2536 | ||
2537 | for (j = 0; j < lbytes; j++) | |
2538 | { | |
2539 | k = start[j]; | |
2540 | if (k >= ' ' && k < 0x80) | |
2541 | printf ("%c", k); | |
2542 | else | |
2543 | printf ("."); | |
2544 | } | |
2545 | ||
2546 | putchar ('\n'); | |
2547 | ||
2548 | start += lbytes; | |
2549 | addr += lbytes; | |
2550 | bytes -= lbytes; | |
2551 | } | |
2552 | ||
2553 | putchar ('\n'); | |
2554 | ||
2555 | return 1; | |
2556 | } | |
2557 | ||
2558 | ||
2559 | static int | |
2560 | display_debug_info (struct dwarf_section *section, void *file) | |
2561 | { | |
2562 | return process_debug_info (section, file, 0); | |
2563 | } | |
2564 | ||
2565 | ||
2566 | static int | |
2567 | display_debug_aranges (struct dwarf_section *section, | |
2568 | void *file ATTRIBUTE_UNUSED) | |
2569 | { | |
2570 | unsigned char *start = section->start; | |
2571 | unsigned char *end = start + section->size; | |
2572 | ||
2573 | printf (_("The section %s contains:\n\n"), section->name); | |
2574 | ||
2575 | while (start < end) | |
2576 | { | |
2577 | unsigned char *hdrptr; | |
2578 | DWARF2_Internal_ARange arange; | |
2579 | unsigned char *ranges; | |
2580 | unsigned long length; | |
2581 | unsigned long address; | |
2582 | int excess; | |
2583 | int offset_size; | |
2584 | int initial_length_size; | |
2585 | ||
2586 | hdrptr = start; | |
2587 | ||
2588 | arange.ar_length = byte_get (hdrptr, 4); | |
2589 | hdrptr += 4; | |
2590 | ||
2591 | if (arange.ar_length == 0xffffffff) | |
2592 | { | |
2593 | arange.ar_length = byte_get (hdrptr, 8); | |
2594 | hdrptr += 8; | |
2595 | offset_size = 8; | |
2596 | initial_length_size = 12; | |
2597 | } | |
2598 | else | |
2599 | { | |
2600 | offset_size = 4; | |
2601 | initial_length_size = 4; | |
2602 | } | |
2603 | ||
2604 | arange.ar_version = byte_get (hdrptr, 2); | |
2605 | hdrptr += 2; | |
2606 | ||
2607 | arange.ar_info_offset = byte_get (hdrptr, offset_size); | |
2608 | hdrptr += offset_size; | |
2609 | ||
2610 | arange.ar_pointer_size = byte_get (hdrptr, 1); | |
2611 | hdrptr += 1; | |
2612 | ||
2613 | arange.ar_segment_size = byte_get (hdrptr, 1); | |
2614 | hdrptr += 1; | |
2615 | ||
2616 | if (arange.ar_version != 2 && arange.ar_version != 3) | |
2617 | { | |
2618 | warn (_("Only DWARF 2 and 3 aranges are currently supported.\n")); | |
2619 | break; | |
2620 | } | |
2621 | ||
2622 | printf (_(" Length: %ld\n"), arange.ar_length); | |
2623 | printf (_(" Version: %d\n"), arange.ar_version); | |
2624 | printf (_(" Offset into .debug_info: %lx\n"), arange.ar_info_offset); | |
2625 | printf (_(" Pointer Size: %d\n"), arange.ar_pointer_size); | |
2626 | printf (_(" Segment Size: %d\n"), arange.ar_segment_size); | |
2627 | ||
2628 | printf (_("\n Address Length\n")); | |
2629 | ||
2630 | ranges = hdrptr; | |
2631 | ||
2632 | /* Must pad to an alignment boundary that is twice the pointer size. */ | |
2633 | excess = (hdrptr - start) % (2 * arange.ar_pointer_size); | |
2634 | if (excess) | |
2635 | ranges += (2 * arange.ar_pointer_size) - excess; | |
2636 | ||
2637 | for (;;) | |
2638 | { | |
2639 | address = byte_get (ranges, arange.ar_pointer_size); | |
2640 | ||
2641 | ranges += arange.ar_pointer_size; | |
2642 | ||
2643 | length = byte_get (ranges, arange.ar_pointer_size); | |
2644 | ||
2645 | ranges += arange.ar_pointer_size; | |
2646 | ||
2647 | /* A pair of zeros marks the end of the list. */ | |
2648 | if (address == 0 && length == 0) | |
2649 | break; | |
2650 | ||
2651 | printf (" %8.8lx %lu\n", address, length); | |
2652 | } | |
2653 | ||
2654 | start += arange.ar_length + initial_length_size; | |
2655 | } | |
2656 | ||
2657 | printf ("\n"); | |
2658 | ||
2659 | return 1; | |
2660 | } | |
2661 | ||
2662 | static int | |
2663 | display_debug_ranges (struct dwarf_section *section, | |
2664 | void *file ATTRIBUTE_UNUSED) | |
2665 | { | |
2666 | unsigned char *start = section->start; | |
2667 | unsigned char *section_end; | |
2668 | unsigned long bytes; | |
2669 | unsigned char *section_begin = start; | |
2670 | unsigned int num_range_list = 0; | |
2671 | unsigned long last_offset = 0; | |
2672 | unsigned int first = 0; | |
2673 | unsigned int i; | |
2674 | unsigned int j; | |
2675 | int seen_first_offset = 0; | |
2676 | int use_debug_info = 1; | |
2677 | unsigned char *next; | |
2678 | ||
2679 | bytes = section->size; | |
2680 | section_end = start + bytes; | |
2681 | ||
2682 | if (bytes == 0) | |
2683 | { | |
2684 | printf (_("\nThe %s section is empty.\n"), section->name); | |
2685 | return 0; | |
2686 | } | |
2687 | ||
2688 | load_debug_info (file); | |
2689 | ||
2690 | /* Check the order of range list in .debug_info section. If | |
2691 | offsets of range lists are in the ascending order, we can | |
2692 | use `debug_information' directly. */ | |
2693 | for (i = 0; i < num_debug_info_entries; i++) | |
2694 | { | |
2695 | unsigned int num; | |
2696 | ||
2697 | num = debug_information [i].num_range_lists; | |
2698 | num_range_list += num; | |
2699 | ||
2700 | /* Check if we can use `debug_information' directly. */ | |
2701 | if (use_debug_info && num != 0) | |
2702 | { | |
2703 | if (!seen_first_offset) | |
2704 | { | |
2705 | /* This is the first range list. */ | |
2706 | last_offset = debug_information [i].range_lists [0]; | |
2707 | first = i; | |
2708 | seen_first_offset = 1; | |
2709 | j = 1; | |
2710 | } | |
2711 | else | |
2712 | j = 0; | |
2713 | ||
2714 | for (; j < num; j++) | |
2715 | { | |
2716 | if (last_offset > | |
2717 | debug_information [i].range_lists [j]) | |
2718 | { | |
2719 | use_debug_info = 0; | |
2720 | break; | |
2721 | } | |
2722 | last_offset = debug_information [i].range_lists [j]; | |
2723 | } | |
2724 | } | |
2725 | } | |
2726 | ||
2727 | if (!use_debug_info) | |
2728 | /* FIXME: Should we handle this case? */ | |
2729 | error (_("Range lists in .debug_info section aren't in ascending order!\n")); | |
2730 | ||
2731 | if (!seen_first_offset) | |
2732 | error (_("No range lists in .debug_info section!\n")); | |
2733 | ||
bfe2612a L |
2734 | /* DWARF sections under Mach-O have non-zero addresses. */ |
2735 | if (debug_information [first].range_lists [0] != section->address) | |
19e6b90e L |
2736 | warn (_("Range lists in %s section start at 0x%lx\n"), |
2737 | section->name, debug_information [first].range_lists [0]); | |
2738 | ||
2739 | printf (_("Contents of the %s section:\n\n"), section->name); | |
2740 | printf (_(" Offset Begin End\n")); | |
2741 | ||
2742 | seen_first_offset = 0; | |
2743 | for (i = first; i < num_debug_info_entries; i++) | |
2744 | { | |
2745 | unsigned long begin; | |
2746 | unsigned long end; | |
2747 | unsigned long offset; | |
2748 | unsigned int pointer_size; | |
2749 | unsigned long base_address; | |
2750 | ||
2751 | pointer_size = debug_information [i].pointer_size; | |
2752 | ||
2753 | for (j = 0; j < debug_information [i].num_range_lists; j++) | |
2754 | { | |
bfe2612a L |
2755 | /* DWARF sections under Mach-O have non-zero addresses. */ |
2756 | offset = debug_information [i].range_lists [j] - section->address; | |
19e6b90e L |
2757 | next = section_begin + offset; |
2758 | base_address = debug_information [i].base_address; | |
2759 | ||
2760 | if (!seen_first_offset) | |
2761 | seen_first_offset = 1; | |
2762 | else | |
2763 | { | |
2764 | if (start < next) | |
2765 | warn (_("There is a hole [0x%lx - 0x%lx] in %s section.\n"), | |
2766 | (long)(start - section_begin), | |
2767 | (long)(next - section_begin), section->name); | |
2768 | else if (start > next) | |
2769 | warn (_("There is an overlap [0x%lx - 0x%lx] in %s section.\n"), | |
2770 | (long)(start - section_begin), | |
2771 | (long)(next - section_begin), section->name); | |
2772 | } | |
2773 | start = next; | |
2774 | ||
2775 | while (1) | |
2776 | { | |
2777 | begin = byte_get (start, pointer_size); | |
2778 | start += pointer_size; | |
2779 | end = byte_get (start, pointer_size); | |
2780 | start += pointer_size; | |
2781 | ||
2782 | if (begin == 0 && end == 0) | |
2783 | { | |
2784 | printf (_(" %8.8lx <End of list>\n"), offset); | |
2785 | break; | |
2786 | } | |
2787 | ||
2788 | /* Check base address specifiers. */ | |
2789 | if (begin == -1UL && end != -1UL) | |
2790 | { | |
2791 | base_address = end; | |
2792 | printf (" %8.8lx %8.8lx %8.8lx (base address)\n", | |
2793 | offset, begin, end); | |
2794 | continue; | |
2795 | } | |
2796 | ||
2797 | printf (" %8.8lx %8.8lx %8.8lx", | |
2798 | offset, begin + base_address, end + base_address); | |
2799 | ||
2800 | if (begin == end) | |
2801 | fputs (_(" (start == end)"), stdout); | |
2802 | else if (begin > end) | |
2803 | fputs (_(" (start > end)"), stdout); | |
2804 | ||
2805 | putchar ('\n'); | |
2806 | } | |
2807 | } | |
2808 | } | |
2809 | putchar ('\n'); | |
2810 | return 1; | |
2811 | } | |
2812 | ||
2813 | typedef struct Frame_Chunk | |
2814 | { | |
2815 | struct Frame_Chunk *next; | |
2816 | unsigned char *chunk_start; | |
2817 | int ncols; | |
2818 | /* DW_CFA_{undefined,same_value,offset,register,unreferenced} */ | |
2819 | short int *col_type; | |
2820 | int *col_offset; | |
2821 | char *augmentation; | |
2822 | unsigned int code_factor; | |
2823 | int data_factor; | |
2824 | unsigned long pc_begin; | |
2825 | unsigned long pc_range; | |
2826 | int cfa_reg; | |
2827 | int cfa_offset; | |
2828 | int ra; | |
2829 | unsigned char fde_encoding; | |
2830 | unsigned char cfa_exp; | |
2831 | } | |
2832 | Frame_Chunk; | |
2833 | ||
2834 | /* A marker for a col_type that means this column was never referenced | |
2835 | in the frame info. */ | |
2836 | #define DW_CFA_unreferenced (-1) | |
2837 | ||
2838 | static void | |
2839 | frame_need_space (Frame_Chunk *fc, int reg) | |
2840 | { | |
2841 | int prev = fc->ncols; | |
2842 | ||
2843 | if (reg < fc->ncols) | |
2844 | return; | |
2845 | ||
2846 | fc->ncols = reg + 1; | |
2847 | fc->col_type = xcrealloc (fc->col_type, fc->ncols, sizeof (short int)); | |
2848 | fc->col_offset = xcrealloc (fc->col_offset, fc->ncols, sizeof (int)); | |
2849 | ||
2850 | while (prev < fc->ncols) | |
2851 | { | |
2852 | fc->col_type[prev] = DW_CFA_unreferenced; | |
2853 | fc->col_offset[prev] = 0; | |
2854 | prev++; | |
2855 | } | |
2856 | } | |
2857 | ||
2858 | static void | |
2859 | frame_display_row (Frame_Chunk *fc, int *need_col_headers, int *max_regs) | |
2860 | { | |
2861 | int r; | |
2862 | char tmp[100]; | |
2863 | ||
2864 | if (*max_regs < fc->ncols) | |
2865 | *max_regs = fc->ncols; | |
2866 | ||
2867 | if (*need_col_headers) | |
2868 | { | |
2869 | *need_col_headers = 0; | |
2870 | ||
2871 | printf (" LOC CFA "); | |
2872 | ||
2873 | for (r = 0; r < *max_regs; r++) | |
2874 | if (fc->col_type[r] != DW_CFA_unreferenced) | |
2875 | { | |
2876 | if (r == fc->ra) | |
2877 | printf ("ra "); | |
2878 | else | |
2879 | printf ("r%-4d", r); | |
2880 | } | |
2881 | ||
2882 | printf ("\n"); | |
2883 | } | |
2884 | ||
2885 | printf ("%08lx ", fc->pc_begin); | |
2886 | if (fc->cfa_exp) | |
2887 | strcpy (tmp, "exp"); | |
2888 | else | |
2889 | sprintf (tmp, "r%d%+d", fc->cfa_reg, fc->cfa_offset); | |
2890 | printf ("%-8s ", tmp); | |
2891 | ||
2892 | for (r = 0; r < fc->ncols; r++) | |
2893 | { | |
2894 | if (fc->col_type[r] != DW_CFA_unreferenced) | |
2895 | { | |
2896 | switch (fc->col_type[r]) | |
2897 | { | |
2898 | case DW_CFA_undefined: | |
2899 | strcpy (tmp, "u"); | |
2900 | break; | |
2901 | case DW_CFA_same_value: | |
2902 | strcpy (tmp, "s"); | |
2903 | break; | |
2904 | case DW_CFA_offset: | |
2905 | sprintf (tmp, "c%+d", fc->col_offset[r]); | |
2906 | break; | |
12eae2d3 JJ |
2907 | case DW_CFA_val_offset: |
2908 | sprintf (tmp, "v%+d", fc->col_offset[r]); | |
2909 | break; | |
19e6b90e L |
2910 | case DW_CFA_register: |
2911 | sprintf (tmp, "r%d", fc->col_offset[r]); | |
2912 | break; | |
2913 | case DW_CFA_expression: | |
2914 | strcpy (tmp, "exp"); | |
2915 | break; | |
12eae2d3 JJ |
2916 | case DW_CFA_val_expression: |
2917 | strcpy (tmp, "vexp"); | |
2918 | break; | |
19e6b90e L |
2919 | default: |
2920 | strcpy (tmp, "n/a"); | |
2921 | break; | |
2922 | } | |
2923 | printf ("%-5s", tmp); | |
2924 | } | |
2925 | } | |
2926 | printf ("\n"); | |
2927 | } | |
2928 | ||
2929 | static int | |
2930 | size_of_encoded_value (int encoding) | |
2931 | { | |
2932 | switch (encoding & 0x7) | |
2933 | { | |
2934 | default: /* ??? */ | |
2935 | case 0: return eh_addr_size; | |
2936 | case 2: return 2; | |
2937 | case 3: return 4; | |
2938 | case 4: return 8; | |
2939 | } | |
2940 | } | |
2941 | ||
2942 | static dwarf_vma | |
2943 | get_encoded_value (unsigned char *data, int encoding) | |
2944 | { | |
2945 | int size = size_of_encoded_value (encoding); | |
2946 | if (encoding & DW_EH_PE_signed) | |
2947 | return byte_get_signed (data, size); | |
2948 | else | |
2949 | return byte_get (data, size); | |
2950 | } | |
2951 | ||
2952 | #define GET(N) byte_get (start, N); start += N | |
2953 | #define LEB() read_leb128 (start, & length_return, 0); start += length_return | |
2954 | #define SLEB() read_leb128 (start, & length_return, 1); start += length_return | |
2955 | ||
2956 | static int | |
2957 | display_debug_frames (struct dwarf_section *section, | |
2958 | void *file ATTRIBUTE_UNUSED) | |
2959 | { | |
2960 | unsigned char *start = section->start; | |
2961 | unsigned char *end = start + section->size; | |
2962 | unsigned char *section_start = start; | |
2963 | Frame_Chunk *chunks = 0; | |
2964 | Frame_Chunk *remembered_state = 0; | |
2965 | Frame_Chunk *rs; | |
2966 | int is_eh = strcmp (section->name, ".eh_frame") == 0; | |
2967 | unsigned int length_return; | |
2968 | int max_regs = 0; | |
2969 | ||
2970 | printf (_("The section %s contains:\n"), section->name); | |
2971 | ||
2972 | while (start < end) | |
2973 | { | |
2974 | unsigned char *saved_start; | |
2975 | unsigned char *block_end; | |
2976 | unsigned long length; | |
2977 | unsigned long cie_id; | |
2978 | Frame_Chunk *fc; | |
2979 | Frame_Chunk *cie; | |
2980 | int need_col_headers = 1; | |
2981 | unsigned char *augmentation_data = NULL; | |
2982 | unsigned long augmentation_data_len = 0; | |
2983 | int encoded_ptr_size = eh_addr_size; | |
2984 | int offset_size; | |
2985 | int initial_length_size; | |
2986 | ||
2987 | saved_start = start; | |
2988 | length = byte_get (start, 4); start += 4; | |
2989 | ||
2990 | if (length == 0) | |
2991 | { | |
2992 | printf ("\n%08lx ZERO terminator\n\n", | |
2993 | (unsigned long)(saved_start - section_start)); | |
2994 | return 1; | |
2995 | } | |
2996 | ||
2997 | if (length == 0xffffffff) | |
2998 | { | |
2999 | length = byte_get (start, 8); | |
3000 | start += 8; | |
3001 | offset_size = 8; | |
3002 | initial_length_size = 12; | |
3003 | } | |
3004 | else | |
3005 | { | |
3006 | offset_size = 4; | |
3007 | initial_length_size = 4; | |
3008 | } | |
3009 | ||
3010 | block_end = saved_start + length + initial_length_size; | |
3011 | cie_id = byte_get (start, offset_size); start += offset_size; | |
3012 | ||
3013 | if (is_eh ? (cie_id == 0) : (cie_id == DW_CIE_ID)) | |
3014 | { | |
3015 | int version; | |
3016 | ||
3017 | fc = xmalloc (sizeof (Frame_Chunk)); | |
3018 | memset (fc, 0, sizeof (Frame_Chunk)); | |
3019 | ||
3020 | fc->next = chunks; | |
3021 | chunks = fc; | |
3022 | fc->chunk_start = saved_start; | |
3023 | fc->ncols = 0; | |
3024 | fc->col_type = xmalloc (sizeof (short int)); | |
3025 | fc->col_offset = xmalloc (sizeof (int)); | |
3026 | frame_need_space (fc, max_regs-1); | |
3027 | ||
3028 | version = *start++; | |
3029 | ||
3030 | fc->augmentation = (char *) start; | |
3031 | start = (unsigned char *) strchr ((char *) start, '\0') + 1; | |
3032 | ||
3033 | if (fc->augmentation[0] == 'z') | |
3034 | { | |
3035 | fc->code_factor = LEB (); | |
3036 | fc->data_factor = SLEB (); | |
3037 | if (version == 1) | |
3038 | { | |
3039 | fc->ra = GET (1); | |
3040 | } | |
3041 | else | |
3042 | { | |
3043 | fc->ra = LEB (); | |
3044 | } | |
3045 | augmentation_data_len = LEB (); | |
3046 | augmentation_data = start; | |
3047 | start += augmentation_data_len; | |
3048 | } | |
3049 | else if (strcmp (fc->augmentation, "eh") == 0) | |
3050 | { | |
3051 | start += eh_addr_size; | |
3052 | fc->code_factor = LEB (); | |
3053 | fc->data_factor = SLEB (); | |
3054 | if (version == 1) | |
3055 | { | |
3056 | fc->ra = GET (1); | |
3057 | } | |
3058 | else | |
3059 | { | |
3060 | fc->ra = LEB (); | |
3061 | } | |
3062 | } | |
3063 | else | |
3064 | { | |
3065 | fc->code_factor = LEB (); | |
3066 | fc->data_factor = SLEB (); | |
3067 | if (version == 1) | |
3068 | { | |
3069 | fc->ra = GET (1); | |
3070 | } | |
3071 | else | |
3072 | { | |
3073 | fc->ra = LEB (); | |
3074 | } | |
3075 | } | |
3076 | cie = fc; | |
3077 | ||
3078 | if (do_debug_frames_interp) | |
3079 | printf ("\n%08lx %08lx %08lx CIE \"%s\" cf=%d df=%d ra=%d\n", | |
3080 | (unsigned long)(saved_start - section_start), length, cie_id, | |
3081 | fc->augmentation, fc->code_factor, fc->data_factor, | |
3082 | fc->ra); | |
3083 | else | |
3084 | { | |
3085 | printf ("\n%08lx %08lx %08lx CIE\n", | |
3086 | (unsigned long)(saved_start - section_start), length, cie_id); | |
3087 | printf (" Version: %d\n", version); | |
3088 | printf (" Augmentation: \"%s\"\n", fc->augmentation); | |
3089 | printf (" Code alignment factor: %u\n", fc->code_factor); | |
3090 | printf (" Data alignment factor: %d\n", fc->data_factor); | |
3091 | printf (" Return address column: %d\n", fc->ra); | |
3092 | ||
3093 | if (augmentation_data_len) | |
3094 | { | |
3095 | unsigned long i; | |
3096 | printf (" Augmentation data: "); | |
3097 | for (i = 0; i < augmentation_data_len; ++i) | |
3098 | printf (" %02x", augmentation_data[i]); | |
3099 | putchar ('\n'); | |
3100 | } | |
3101 | putchar ('\n'); | |
3102 | } | |
3103 | ||
3104 | if (augmentation_data_len) | |
3105 | { | |
3106 | unsigned char *p, *q; | |
3107 | p = (unsigned char *) fc->augmentation + 1; | |
3108 | q = augmentation_data; | |
3109 | ||
3110 | while (1) | |
3111 | { | |
3112 | if (*p == 'L') | |
3113 | q++; | |
3114 | else if (*p == 'P') | |
3115 | q += 1 + size_of_encoded_value (*q); | |
3116 | else if (*p == 'R') | |
3117 | fc->fde_encoding = *q++; | |
3118 | else | |
3119 | break; | |
3120 | p++; | |
3121 | } | |
3122 | ||
3123 | if (fc->fde_encoding) | |
3124 | encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); | |
3125 | } | |
3126 | ||
3127 | frame_need_space (fc, fc->ra); | |
3128 | } | |
3129 | else | |
3130 | { | |
3131 | unsigned char *look_for; | |
3132 | static Frame_Chunk fde_fc; | |
3133 | ||
3134 | fc = & fde_fc; | |
3135 | memset (fc, 0, sizeof (Frame_Chunk)); | |
3136 | ||
3137 | look_for = is_eh ? start - 4 - cie_id : section_start + cie_id; | |
3138 | ||
3139 | for (cie = chunks; cie ; cie = cie->next) | |
3140 | if (cie->chunk_start == look_for) | |
3141 | break; | |
3142 | ||
3143 | if (!cie) | |
3144 | { | |
3145 | warn ("Invalid CIE pointer %08lx in FDE at %p\n", | |
3146 | cie_id, saved_start); | |
3147 | start = block_end; | |
3148 | fc->ncols = 0; | |
3149 | fc->col_type = xmalloc (sizeof (short int)); | |
3150 | fc->col_offset = xmalloc (sizeof (int)); | |
3151 | frame_need_space (fc, max_regs - 1); | |
3152 | cie = fc; | |
3153 | fc->augmentation = ""; | |
3154 | fc->fde_encoding = 0; | |
3155 | } | |
3156 | else | |
3157 | { | |
3158 | fc->ncols = cie->ncols; | |
3159 | fc->col_type = xcmalloc (fc->ncols, sizeof (short int)); | |
3160 | fc->col_offset = xcmalloc (fc->ncols, sizeof (int)); | |
3161 | memcpy (fc->col_type, cie->col_type, fc->ncols * sizeof (short int)); | |
3162 | memcpy (fc->col_offset, cie->col_offset, fc->ncols * sizeof (int)); | |
3163 | fc->augmentation = cie->augmentation; | |
3164 | fc->code_factor = cie->code_factor; | |
3165 | fc->data_factor = cie->data_factor; | |
3166 | fc->cfa_reg = cie->cfa_reg; | |
3167 | fc->cfa_offset = cie->cfa_offset; | |
3168 | fc->ra = cie->ra; | |
3169 | frame_need_space (fc, max_regs-1); | |
3170 | fc->fde_encoding = cie->fde_encoding; | |
3171 | } | |
3172 | ||
3173 | if (fc->fde_encoding) | |
3174 | encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); | |
3175 | ||
3176 | fc->pc_begin = get_encoded_value (start, fc->fde_encoding); | |
3177 | if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel | |
3178 | /* Don't adjust for relocatable file since there's | |
3179 | invariably a pcrel reloc here, which we haven't | |
3180 | applied. */ | |
3181 | && !is_relocatable) | |
3182 | fc->pc_begin += section->address + (start - section_start); | |
3183 | start += encoded_ptr_size; | |
3184 | fc->pc_range = byte_get (start, encoded_ptr_size); | |
3185 | start += encoded_ptr_size; | |
3186 | ||
3187 | if (cie->augmentation[0] == 'z') | |
3188 | { | |
3189 | augmentation_data_len = LEB (); | |
3190 | augmentation_data = start; | |
3191 | start += augmentation_data_len; | |
3192 | } | |
3193 | ||
3194 | printf ("\n%08lx %08lx %08lx FDE cie=%08lx pc=%08lx..%08lx\n", | |
3195 | (unsigned long)(saved_start - section_start), length, cie_id, | |
3196 | (unsigned long)(cie->chunk_start - section_start), | |
3197 | fc->pc_begin, fc->pc_begin + fc->pc_range); | |
3198 | if (! do_debug_frames_interp && augmentation_data_len) | |
3199 | { | |
3200 | unsigned long i; | |
3201 | ||
3202 | printf (" Augmentation data: "); | |
3203 | for (i = 0; i < augmentation_data_len; ++i) | |
3204 | printf (" %02x", augmentation_data[i]); | |
3205 | putchar ('\n'); | |
3206 | putchar ('\n'); | |
3207 | } | |
3208 | } | |
3209 | ||
3210 | /* At this point, fc is the current chunk, cie (if any) is set, and | |
3211 | we're about to interpret instructions for the chunk. */ | |
3212 | /* ??? At present we need to do this always, since this sizes the | |
3213 | fc->col_type and fc->col_offset arrays, which we write into always. | |
3214 | We should probably split the interpreted and non-interpreted bits | |
3215 | into two different routines, since there's so much that doesn't | |
3216 | really overlap between them. */ | |
3217 | if (1 || do_debug_frames_interp) | |
3218 | { | |
3219 | /* Start by making a pass over the chunk, allocating storage | |
3220 | and taking note of what registers are used. */ | |
3221 | unsigned char *tmp = start; | |
3222 | ||
3223 | while (start < block_end) | |
3224 | { | |
3225 | unsigned op, opa; | |
3226 | unsigned long reg, tmp; | |
3227 | ||
3228 | op = *start++; | |
3229 | opa = op & 0x3f; | |
3230 | if (op & 0xc0) | |
3231 | op &= 0xc0; | |
3232 | ||
3233 | /* Warning: if you add any more cases to this switch, be | |
3234 | sure to add them to the corresponding switch below. */ | |
3235 | switch (op) | |
3236 | { | |
3237 | case DW_CFA_advance_loc: | |
3238 | break; | |
3239 | case DW_CFA_offset: | |
3240 | LEB (); | |
3241 | frame_need_space (fc, opa); | |
3242 | fc->col_type[opa] = DW_CFA_undefined; | |
3243 | break; | |
3244 | case DW_CFA_restore: | |
3245 | frame_need_space (fc, opa); | |
3246 | fc->col_type[opa] = DW_CFA_undefined; | |
3247 | break; | |
3248 | case DW_CFA_set_loc: | |
3249 | start += encoded_ptr_size; | |
3250 | break; | |
3251 | case DW_CFA_advance_loc1: | |
3252 | start += 1; | |
3253 | break; | |
3254 | case DW_CFA_advance_loc2: | |
3255 | start += 2; | |
3256 | break; | |
3257 | case DW_CFA_advance_loc4: | |
3258 | start += 4; | |
3259 | break; | |
3260 | case DW_CFA_offset_extended: | |
12eae2d3 | 3261 | case DW_CFA_val_offset: |
19e6b90e L |
3262 | reg = LEB (); LEB (); |
3263 | frame_need_space (fc, reg); | |
3264 | fc->col_type[reg] = DW_CFA_undefined; | |
3265 | break; | |
3266 | case DW_CFA_restore_extended: | |
3267 | reg = LEB (); | |
3268 | frame_need_space (fc, reg); | |
3269 | fc->col_type[reg] = DW_CFA_undefined; | |
3270 | break; | |
3271 | case DW_CFA_undefined: | |
3272 | reg = LEB (); | |
3273 | frame_need_space (fc, reg); | |
3274 | fc->col_type[reg] = DW_CFA_undefined; | |
3275 | break; | |
3276 | case DW_CFA_same_value: | |
3277 | reg = LEB (); | |
3278 | frame_need_space (fc, reg); | |
3279 | fc->col_type[reg] = DW_CFA_undefined; | |
3280 | break; | |
3281 | case DW_CFA_register: | |
3282 | reg = LEB (); LEB (); | |
3283 | frame_need_space (fc, reg); | |
3284 | fc->col_type[reg] = DW_CFA_undefined; | |
3285 | break; | |
3286 | case DW_CFA_def_cfa: | |
3287 | LEB (); LEB (); | |
3288 | break; | |
3289 | case DW_CFA_def_cfa_register: | |
3290 | LEB (); | |
3291 | break; | |
3292 | case DW_CFA_def_cfa_offset: | |
3293 | LEB (); | |
3294 | break; | |
3295 | case DW_CFA_def_cfa_expression: | |
3296 | tmp = LEB (); | |
3297 | start += tmp; | |
3298 | break; | |
3299 | case DW_CFA_expression: | |
12eae2d3 | 3300 | case DW_CFA_val_expression: |
19e6b90e L |
3301 | reg = LEB (); |
3302 | tmp = LEB (); | |
3303 | start += tmp; | |
3304 | frame_need_space (fc, reg); | |
3305 | fc->col_type[reg] = DW_CFA_undefined; | |
3306 | break; | |
3307 | case DW_CFA_offset_extended_sf: | |
12eae2d3 | 3308 | case DW_CFA_val_offset_sf: |
19e6b90e L |
3309 | reg = LEB (); SLEB (); |
3310 | frame_need_space (fc, reg); | |
3311 | fc->col_type[reg] = DW_CFA_undefined; | |
3312 | break; | |
3313 | case DW_CFA_def_cfa_sf: | |
3314 | LEB (); SLEB (); | |
3315 | break; | |
3316 | case DW_CFA_def_cfa_offset_sf: | |
3317 | SLEB (); | |
3318 | break; | |
3319 | case DW_CFA_MIPS_advance_loc8: | |
3320 | start += 8; | |
3321 | break; | |
3322 | case DW_CFA_GNU_args_size: | |
3323 | LEB (); | |
3324 | break; | |
3325 | case DW_CFA_GNU_negative_offset_extended: | |
3326 | reg = LEB (); LEB (); | |
3327 | frame_need_space (fc, reg); | |
3328 | fc->col_type[reg] = DW_CFA_undefined; | |
3329 | ||
3330 | default: | |
3331 | break; | |
3332 | } | |
3333 | } | |
3334 | start = tmp; | |
3335 | } | |
3336 | ||
3337 | /* Now we know what registers are used, make a second pass over | |
3338 | the chunk, this time actually printing out the info. */ | |
3339 | ||
3340 | while (start < block_end) | |
3341 | { | |
3342 | unsigned op, opa; | |
3343 | unsigned long ul, reg, roffs; | |
3344 | long l, ofs; | |
3345 | dwarf_vma vma; | |
3346 | ||
3347 | op = *start++; | |
3348 | opa = op & 0x3f; | |
3349 | if (op & 0xc0) | |
3350 | op &= 0xc0; | |
3351 | ||
3352 | /* Warning: if you add any more cases to this switch, be | |
3353 | sure to add them to the corresponding switch above. */ | |
3354 | switch (op) | |
3355 | { | |
3356 | case DW_CFA_advance_loc: | |
3357 | if (do_debug_frames_interp) | |
3358 | frame_display_row (fc, &need_col_headers, &max_regs); | |
3359 | else | |
3360 | printf (" DW_CFA_advance_loc: %d to %08lx\n", | |
3361 | opa * fc->code_factor, | |
3362 | fc->pc_begin + opa * fc->code_factor); | |
3363 | fc->pc_begin += opa * fc->code_factor; | |
3364 | break; | |
3365 | ||
3366 | case DW_CFA_offset: | |
3367 | roffs = LEB (); | |
3368 | if (! do_debug_frames_interp) | |
3369 | printf (" DW_CFA_offset: r%d at cfa%+ld\n", | |
3370 | opa, roffs * fc->data_factor); | |
3371 | fc->col_type[opa] = DW_CFA_offset; | |
3372 | fc->col_offset[opa] = roffs * fc->data_factor; | |
3373 | break; | |
3374 | ||
3375 | case DW_CFA_restore: | |
3376 | if (! do_debug_frames_interp) | |
3377 | printf (" DW_CFA_restore: r%d\n", opa); | |
3378 | fc->col_type[opa] = cie->col_type[opa]; | |
3379 | fc->col_offset[opa] = cie->col_offset[opa]; | |
3380 | break; | |
3381 | ||
3382 | case DW_CFA_set_loc: | |
3383 | vma = get_encoded_value (start, fc->fde_encoding); | |
3384 | if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel | |
3385 | && !is_relocatable) | |
3386 | vma += section->address + (start - section_start); | |
3387 | start += encoded_ptr_size; | |
3388 | if (do_debug_frames_interp) | |
3389 | frame_display_row (fc, &need_col_headers, &max_regs); | |
3390 | else | |
3391 | printf (" DW_CFA_set_loc: %08lx\n", (unsigned long)vma); | |
3392 | fc->pc_begin = vma; | |
3393 | break; | |
3394 | ||
3395 | case DW_CFA_advance_loc1: | |
3396 | ofs = byte_get (start, 1); start += 1; | |
3397 | if (do_debug_frames_interp) | |
3398 | frame_display_row (fc, &need_col_headers, &max_regs); | |
3399 | else | |
3400 | printf (" DW_CFA_advance_loc1: %ld to %08lx\n", | |
3401 | ofs * fc->code_factor, | |
3402 | fc->pc_begin + ofs * fc->code_factor); | |
3403 | fc->pc_begin += ofs * fc->code_factor; | |
3404 | break; | |
3405 | ||
3406 | case DW_CFA_advance_loc2: | |
3407 | ofs = byte_get (start, 2); start += 2; | |
3408 | if (do_debug_frames_interp) | |
3409 | frame_display_row (fc, &need_col_headers, &max_regs); | |
3410 | else | |
3411 | printf (" DW_CFA_advance_loc2: %ld to %08lx\n", | |
3412 | ofs * fc->code_factor, | |
3413 | fc->pc_begin + ofs * fc->code_factor); | |
3414 | fc->pc_begin += ofs * fc->code_factor; | |
3415 | break; | |
3416 | ||
3417 | case DW_CFA_advance_loc4: | |
3418 | ofs = byte_get (start, 4); start += 4; | |
3419 | if (do_debug_frames_interp) | |
3420 | frame_display_row (fc, &need_col_headers, &max_regs); | |
3421 | else | |
3422 | printf (" DW_CFA_advance_loc4: %ld to %08lx\n", | |
3423 | ofs * fc->code_factor, | |
3424 | fc->pc_begin + ofs * fc->code_factor); | |
3425 | fc->pc_begin += ofs * fc->code_factor; | |
3426 | break; | |
3427 | ||
3428 | case DW_CFA_offset_extended: | |
3429 | reg = LEB (); | |
3430 | roffs = LEB (); | |
3431 | if (! do_debug_frames_interp) | |
3432 | printf (" DW_CFA_offset_extended: r%ld at cfa%+ld\n", | |
3433 | reg, roffs * fc->data_factor); | |
3434 | fc->col_type[reg] = DW_CFA_offset; | |
3435 | fc->col_offset[reg] = roffs * fc->data_factor; | |
3436 | break; | |
3437 | ||
12eae2d3 JJ |
3438 | case DW_CFA_val_offset: |
3439 | reg = LEB (); | |
3440 | roffs = LEB (); | |
3441 | if (! do_debug_frames_interp) | |
3442 | printf (" DW_CFA_val_offset: r%ld at cfa%+ld\n", | |
3443 | reg, roffs * fc->data_factor); | |
3444 | fc->col_type[reg] = DW_CFA_val_offset; | |
3445 | fc->col_offset[reg] = roffs * fc->data_factor; | |
3446 | break; | |
3447 | ||
19e6b90e L |
3448 | case DW_CFA_restore_extended: |
3449 | reg = LEB (); | |
3450 | if (! do_debug_frames_interp) | |
3451 | printf (" DW_CFA_restore_extended: r%ld\n", reg); | |
3452 | fc->col_type[reg] = cie->col_type[reg]; | |
3453 | fc->col_offset[reg] = cie->col_offset[reg]; | |
3454 | break; | |
3455 | ||
3456 | case DW_CFA_undefined: | |
3457 | reg = LEB (); | |
3458 | if (! do_debug_frames_interp) | |
3459 | printf (" DW_CFA_undefined: r%ld\n", reg); | |
3460 | fc->col_type[reg] = DW_CFA_undefined; | |
3461 | fc->col_offset[reg] = 0; | |
3462 | break; | |
3463 | ||
3464 | case DW_CFA_same_value: | |
3465 | reg = LEB (); | |
3466 | if (! do_debug_frames_interp) | |
3467 | printf (" DW_CFA_same_value: r%ld\n", reg); | |
3468 | fc->col_type[reg] = DW_CFA_same_value; | |
3469 | fc->col_offset[reg] = 0; | |
3470 | break; | |
3471 | ||
3472 | case DW_CFA_register: | |
3473 | reg = LEB (); | |
3474 | roffs = LEB (); | |
3475 | if (! do_debug_frames_interp) | |
3476 | printf (" DW_CFA_register: r%ld in r%ld\n", reg, roffs); | |
3477 | fc->col_type[reg] = DW_CFA_register; | |
3478 | fc->col_offset[reg] = roffs; | |
3479 | break; | |
3480 | ||
3481 | case DW_CFA_remember_state: | |
3482 | if (! do_debug_frames_interp) | |
3483 | printf (" DW_CFA_remember_state\n"); | |
3484 | rs = xmalloc (sizeof (Frame_Chunk)); | |
3485 | rs->ncols = fc->ncols; | |
3486 | rs->col_type = xcmalloc (rs->ncols, sizeof (short int)); | |
3487 | rs->col_offset = xcmalloc (rs->ncols, sizeof (int)); | |
3488 | memcpy (rs->col_type, fc->col_type, rs->ncols); | |
3489 | memcpy (rs->col_offset, fc->col_offset, rs->ncols * sizeof (int)); | |
3490 | rs->next = remembered_state; | |
3491 | remembered_state = rs; | |
3492 | break; | |
3493 | ||
3494 | case DW_CFA_restore_state: | |
3495 | if (! do_debug_frames_interp) | |
3496 | printf (" DW_CFA_restore_state\n"); | |
3497 | rs = remembered_state; | |
3498 | if (rs) | |
3499 | { | |
3500 | remembered_state = rs->next; | |
3501 | frame_need_space (fc, rs->ncols-1); | |
3502 | memcpy (fc->col_type, rs->col_type, rs->ncols); | |
3503 | memcpy (fc->col_offset, rs->col_offset, | |
3504 | rs->ncols * sizeof (int)); | |
3505 | free (rs->col_type); | |
3506 | free (rs->col_offset); | |
3507 | free (rs); | |
3508 | } | |
3509 | else if (do_debug_frames_interp) | |
3510 | printf ("Mismatched DW_CFA_restore_state\n"); | |
3511 | break; | |
3512 | ||
3513 | case DW_CFA_def_cfa: | |
3514 | fc->cfa_reg = LEB (); | |
3515 | fc->cfa_offset = LEB (); | |
3516 | fc->cfa_exp = 0; | |
3517 | if (! do_debug_frames_interp) | |
3518 | printf (" DW_CFA_def_cfa: r%d ofs %d\n", | |
3519 | fc->cfa_reg, fc->cfa_offset); | |
3520 | break; | |
3521 | ||
3522 | case DW_CFA_def_cfa_register: | |
3523 | fc->cfa_reg = LEB (); | |
3524 | fc->cfa_exp = 0; | |
3525 | if (! do_debug_frames_interp) | |
3526 | printf (" DW_CFA_def_cfa_reg: r%d\n", fc->cfa_reg); | |
3527 | break; | |
3528 | ||
3529 | case DW_CFA_def_cfa_offset: | |
3530 | fc->cfa_offset = LEB (); | |
3531 | if (! do_debug_frames_interp) | |
3532 | printf (" DW_CFA_def_cfa_offset: %d\n", fc->cfa_offset); | |
3533 | break; | |
3534 | ||
3535 | case DW_CFA_nop: | |
3536 | if (! do_debug_frames_interp) | |
3537 | printf (" DW_CFA_nop\n"); | |
3538 | break; | |
3539 | ||
3540 | case DW_CFA_def_cfa_expression: | |
3541 | ul = LEB (); | |
3542 | if (! do_debug_frames_interp) | |
3543 | { | |
3544 | printf (" DW_CFA_def_cfa_expression ("); | |
3545 | decode_location_expression (start, eh_addr_size, ul, 0); | |
3546 | printf (")\n"); | |
3547 | } | |
3548 | fc->cfa_exp = 1; | |
3549 | start += ul; | |
3550 | break; | |
3551 | ||
3552 | case DW_CFA_expression: | |
3553 | reg = LEB (); | |
3554 | ul = LEB (); | |
3555 | if (! do_debug_frames_interp) | |
3556 | { | |
3557 | printf (" DW_CFA_expression: r%ld (", reg); | |
3558 | decode_location_expression (start, eh_addr_size, ul, 0); | |
3559 | printf (")\n"); | |
3560 | } | |
3561 | fc->col_type[reg] = DW_CFA_expression; | |
3562 | start += ul; | |
3563 | break; | |
3564 | ||
12eae2d3 JJ |
3565 | case DW_CFA_val_expression: |
3566 | reg = LEB (); | |
3567 | ul = LEB (); | |
3568 | if (! do_debug_frames_interp) | |
3569 | { | |
3570 | printf (" DW_CFA_val_expression: r%ld (", reg); | |
3571 | decode_location_expression (start, eh_addr_size, ul, 0); | |
3572 | printf (")\n"); | |
3573 | } | |
3574 | fc->col_type[reg] = DW_CFA_val_expression; | |
3575 | start += ul; | |
3576 | break; | |
3577 | ||
19e6b90e L |
3578 | case DW_CFA_offset_extended_sf: |
3579 | reg = LEB (); | |
3580 | l = SLEB (); | |
3581 | frame_need_space (fc, reg); | |
3582 | if (! do_debug_frames_interp) | |
3583 | printf (" DW_CFA_offset_extended_sf: r%ld at cfa%+ld\n", | |
3584 | reg, l * fc->data_factor); | |
3585 | fc->col_type[reg] = DW_CFA_offset; | |
3586 | fc->col_offset[reg] = l * fc->data_factor; | |
3587 | break; | |
3588 | ||
12eae2d3 JJ |
3589 | case DW_CFA_val_offset_sf: |
3590 | reg = LEB (); | |
3591 | l = SLEB (); | |
3592 | frame_need_space (fc, reg); | |
3593 | if (! do_debug_frames_interp) | |
3594 | printf (" DW_CFA_val_offset_sf: r%ld at cfa%+ld\n", | |
3595 | reg, l * fc->data_factor); | |
3596 | fc->col_type[reg] = DW_CFA_val_offset; | |
3597 | fc->col_offset[reg] = l * fc->data_factor; | |
3598 | break; | |
3599 | ||
19e6b90e L |
3600 | case DW_CFA_def_cfa_sf: |
3601 | fc->cfa_reg = LEB (); | |
3602 | fc->cfa_offset = SLEB (); | |
3603 | fc->cfa_offset = fc->cfa_offset * fc->data_factor; | |
3604 | fc->cfa_exp = 0; | |
3605 | if (! do_debug_frames_interp) | |
3606 | printf (" DW_CFA_def_cfa_sf: r%d ofs %d\n", | |
3607 | fc->cfa_reg, fc->cfa_offset); | |
3608 | break; | |
3609 | ||
3610 | case DW_CFA_def_cfa_offset_sf: | |
3611 | fc->cfa_offset = SLEB (); | |
3612 | fc->cfa_offset = fc->cfa_offset * fc->data_factor; | |
3613 | if (! do_debug_frames_interp) | |
3614 | printf (" DW_CFA_def_cfa_offset_sf: %d\n", fc->cfa_offset); | |
3615 | break; | |
3616 | ||
3617 | case DW_CFA_MIPS_advance_loc8: | |
3618 | ofs = byte_get (start, 8); start += 8; | |
3619 | if (do_debug_frames_interp) | |
3620 | frame_display_row (fc, &need_col_headers, &max_regs); | |
3621 | else | |
3622 | printf (" DW_CFA_MIPS_advance_loc8: %ld to %08lx\n", | |
3623 | ofs * fc->code_factor, | |
3624 | fc->pc_begin + ofs * fc->code_factor); | |
3625 | fc->pc_begin += ofs * fc->code_factor; | |
3626 | break; | |
3627 | ||
3628 | case DW_CFA_GNU_window_save: | |
3629 | if (! do_debug_frames_interp) | |
3630 | printf (" DW_CFA_GNU_window_save\n"); | |
3631 | break; | |
3632 | ||
3633 | case DW_CFA_GNU_args_size: | |
3634 | ul = LEB (); | |
3635 | if (! do_debug_frames_interp) | |
3636 | printf (" DW_CFA_GNU_args_size: %ld\n", ul); | |
3637 | break; | |
3638 | ||
3639 | case DW_CFA_GNU_negative_offset_extended: | |
3640 | reg = LEB (); | |
3641 | l = - LEB (); | |
3642 | frame_need_space (fc, reg); | |
3643 | if (! do_debug_frames_interp) | |
3644 | printf (" DW_CFA_GNU_negative_offset_extended: r%ld at cfa%+ld\n", | |
3645 | reg, l * fc->data_factor); | |
3646 | fc->col_type[reg] = DW_CFA_offset; | |
3647 | fc->col_offset[reg] = l * fc->data_factor; | |
3648 | break; | |
3649 | ||
3650 | default: | |
3651 | warn (_("unsupported or unknown DW_CFA_%d\n"), op); | |
3652 | start = block_end; | |
3653 | } | |
3654 | } | |
3655 | ||
3656 | if (do_debug_frames_interp) | |
3657 | frame_display_row (fc, &need_col_headers, &max_regs); | |
3658 | ||
3659 | start = block_end; | |
3660 | } | |
3661 | ||
3662 | printf ("\n"); | |
3663 | ||
3664 | return 1; | |
3665 | } | |
3666 | ||
3667 | #undef GET | |
3668 | #undef LEB | |
3669 | #undef SLEB | |
3670 | ||
3671 | static int | |
3672 | display_debug_not_supported (struct dwarf_section *section, | |
3673 | void *file ATTRIBUTE_UNUSED) | |
3674 | { | |
3675 | printf (_("Displaying the debug contents of section %s is not yet supported.\n"), | |
3676 | section->name); | |
3677 | ||
3678 | return 1; | |
3679 | } | |
3680 | ||
3681 | void * | |
3682 | cmalloc (size_t nmemb, size_t size) | |
3683 | { | |
3684 | /* Check for overflow. */ | |
3685 | if (nmemb >= ~(size_t) 0 / size) | |
3686 | return NULL; | |
3687 | else | |
3688 | return malloc (nmemb * size); | |
3689 | } | |
3690 | ||
3691 | void * | |
3692 | xcmalloc (size_t nmemb, size_t size) | |
3693 | { | |
3694 | /* Check for overflow. */ | |
3695 | if (nmemb >= ~(size_t) 0 / size) | |
3696 | return NULL; | |
3697 | else | |
3698 | return xmalloc (nmemb * size); | |
3699 | } | |
3700 | ||
3701 | void * | |
3702 | xcrealloc (void *ptr, size_t nmemb, size_t size) | |
3703 | { | |
3704 | /* Check for overflow. */ | |
3705 | if (nmemb >= ~(size_t) 0 / size) | |
3706 | return NULL; | |
3707 | else | |
3708 | return xrealloc (ptr, nmemb * size); | |
3709 | } | |
3710 | ||
3711 | void | |
3712 | error (const char *message, ...) | |
3713 | { | |
3714 | va_list args; | |
3715 | ||
3716 | va_start (args, message); | |
3717 | fprintf (stderr, _("%s: Error: "), program_name); | |
3718 | vfprintf (stderr, message, args); | |
3719 | va_end (args); | |
3720 | } | |
3721 | ||
3722 | void | |
3723 | warn (const char *message, ...) | |
3724 | { | |
3725 | va_list args; | |
3726 | ||
3727 | va_start (args, message); | |
3728 | fprintf (stderr, _("%s: Warning: "), program_name); | |
3729 | vfprintf (stderr, message, args); | |
3730 | va_end (args); | |
3731 | } | |
3732 | ||
3733 | void | |
3734 | free_debug_memory (void) | |
3735 | { | |
3736 | enum dwarf_section_display_enum i; | |
3737 | ||
3738 | free_abbrevs (); | |
3739 | ||
3740 | for (i = 0; i < max; i++) | |
3741 | free_debug_section (i); | |
3742 | ||
3743 | if (debug_information) | |
3744 | { | |
3745 | for (i = 0; i < num_debug_info_entries; i++) | |
3746 | { | |
3747 | if (!debug_information [i].max_loc_offsets) | |
3748 | { | |
3749 | free (debug_information [i].loc_offsets); | |
3750 | free (debug_information [i].have_frame_base); | |
3751 | } | |
3752 | if (!debug_information [i].max_range_lists) | |
3753 | free (debug_information [i].range_lists); | |
3754 | } | |
3755 | free (debug_information); | |
3756 | debug_information = NULL; | |
3757 | num_debug_info_entries = 0; | |
3758 | } | |
3759 | ||
3760 | } | |
3761 | ||
3762 | struct dwarf_section_display debug_displays[] = | |
3763 | { | |
3764 | { { ".debug_abbrev", NULL, 0, 0 }, | |
3765 | display_debug_abbrev, 0, 0 }, | |
3766 | { { ".debug_aranges", NULL, 0, 0 }, | |
3767 | display_debug_aranges, 0, 0 }, | |
3768 | { { ".debug_frame", NULL, 0, 0 }, | |
3769 | display_debug_frames, 1, 0 }, | |
3770 | { { ".debug_info", NULL, 0, 0 }, | |
3771 | display_debug_info, 1, 0 }, | |
3772 | { { ".debug_line", NULL, 0, 0 }, | |
3773 | display_debug_lines, 0, 0 }, | |
3774 | { { ".debug_pubnames", NULL, 0, 0 }, | |
3775 | display_debug_pubnames, 0, 0 }, | |
3776 | { { ".eh_frame", NULL, 0, 0 }, | |
3777 | display_debug_frames, 1, 1 }, | |
3778 | { { ".debug_macinfo", NULL, 0, 0 }, | |
3779 | display_debug_macinfo, 0, 0 }, | |
3780 | { { ".debug_str", NULL, 0, 0 }, | |
3781 | display_debug_str, 0, 0 }, | |
3782 | { { ".debug_loc", NULL, 0, 0 }, | |
3783 | display_debug_loc, 0, 0 }, | |
3784 | { { ".debug_pubtypes", NULL, 0, 0 }, | |
3785 | display_debug_pubnames, 0, 0 }, | |
3786 | { { ".debug_ranges", NULL, 0, 0 }, | |
3787 | display_debug_ranges, 0, 0 }, | |
3788 | { { ".debug_static_func", NULL, 0, 0 }, | |
3789 | display_debug_not_supported, 0, 0 }, | |
3790 | { { ".debug_static_vars", NULL, 0, 0 }, | |
3791 | display_debug_not_supported, 0, 0 }, | |
3792 | { { ".debug_types", NULL, 0, 0 }, | |
3793 | display_debug_not_supported, 0, 0 }, | |
3794 | { { ".debug_weaknames", NULL, 0, 0 }, | |
3795 | display_debug_not_supported, 0, 0 } | |
3796 | }; |