Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* DWARF 2 support. |
818a27ac | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
f075ee0c | 3 | 2004, 2005 Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | Adapted from gdb/dwarf2read.c by Gavin Koch of Cygnus Solutions | |
6 | (gavin@cygnus.com). | |
7 | ||
8 | From the dwarf2read.c header: | |
9 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
10 | Inc. with support from Florida State University (under contract | |
11 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
12 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
13 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
14 | support in dwarfread.c | |
15 | ||
e2f6d277 | 16 | This file is part of BFD. |
252b5132 | 17 | |
e2f6d277 NC |
18 | This program is free software; you can redistribute it and/or modify |
19 | it under the terms of the GNU General Public License as published by | |
20 | the Free Software Foundation; either version 2 of the License, or (at | |
21 | your option) any later version. | |
252b5132 | 22 | |
e2f6d277 NC |
23 | This program is distributed in the hope that it will be useful, but |
24 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
26 | General Public License for more details. | |
252b5132 | 27 | |
e2f6d277 NC |
28 | You should have received a copy of the GNU General Public License |
29 | along with this program; if not, write to the Free Software | |
3e110533 | 30 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
31 | |
32 | #include "bfd.h" | |
33 | #include "sysdep.h" | |
34 | #include "libiberty.h" | |
35 | #include "libbfd.h" | |
36 | #include "elf-bfd.h" | |
37 | #include "elf/dwarf2.h" | |
38 | ||
39 | /* The data in the .debug_line statement prologue looks like this. */ | |
a092b084 | 40 | |
252b5132 | 41 | struct line_head |
a092b084 | 42 | { |
d03ba2a1 | 43 | bfd_vma total_length; |
a092b084 | 44 | unsigned short version; |
f46c2da6 | 45 | bfd_vma prologue_length; |
a092b084 NC |
46 | unsigned char minimum_instruction_length; |
47 | unsigned char default_is_stmt; | |
48 | int line_base; | |
49 | unsigned char line_range; | |
50 | unsigned char opcode_base; | |
51 | unsigned char *standard_opcode_lengths; | |
52 | }; | |
53 | ||
54 | /* Attributes have a name and a value. */ | |
55 | ||
252b5132 | 56 | struct attribute |
a092b084 NC |
57 | { |
58 | enum dwarf_attribute name; | |
59 | enum dwarf_form form; | |
60 | union | |
252b5132 | 61 | { |
a092b084 NC |
62 | char *str; |
63 | struct dwarf_block *blk; | |
8ce8c090 AM |
64 | bfd_uint64_t val; |
65 | bfd_int64_t sval; | |
a092b084 NC |
66 | } |
67 | u; | |
68 | }; | |
69 | ||
98591c73 | 70 | /* Blocks are a bunch of untyped bytes. */ |
252b5132 | 71 | struct dwarf_block |
a092b084 NC |
72 | { |
73 | unsigned int size; | |
f075ee0c | 74 | bfd_byte *data; |
a092b084 | 75 | }; |
252b5132 | 76 | |
a092b084 NC |
77 | struct dwarf2_debug |
78 | { | |
79 | /* A list of all previously read comp_units. */ | |
f075ee0c | 80 | struct comp_unit *all_comp_units; |
252b5132 RH |
81 | |
82 | /* The next unread compilation unit within the .debug_info section. | |
83 | Zero indicates that the .debug_info section has not been loaded | |
a092b084 | 84 | into a buffer yet. */ |
f075ee0c | 85 | bfd_byte *info_ptr; |
252b5132 | 86 | |
a092b084 | 87 | /* Pointer to the end of the .debug_info section memory buffer. */ |
f075ee0c | 88 | bfd_byte *info_ptr_end; |
252b5132 | 89 | |
f2363ce5 AO |
90 | /* Pointer to the section and address of the beginning of the |
91 | section. */ | |
f075ee0c AM |
92 | asection *sec; |
93 | bfd_byte *sec_info_ptr; | |
f2363ce5 AO |
94 | |
95 | /* Pointer to the symbol table. */ | |
f075ee0c | 96 | asymbol **syms; |
f2363ce5 | 97 | |
a092b084 | 98 | /* Pointer to the .debug_abbrev section loaded into memory. */ |
f075ee0c | 99 | bfd_byte *dwarf_abbrev_buffer; |
252b5132 | 100 | |
a092b084 | 101 | /* Length of the loaded .debug_abbrev section. */ |
252b5132 | 102 | unsigned long dwarf_abbrev_size; |
69dd2e2d RH |
103 | |
104 | /* Buffer for decode_line_info. */ | |
f075ee0c | 105 | bfd_byte *dwarf_line_buffer; |
ccdb16fc JW |
106 | |
107 | /* Length of the loaded .debug_line section. */ | |
108 | unsigned long dwarf_line_size; | |
d03ba2a1 JJ |
109 | |
110 | /* Pointer to the .debug_str section loaded into memory. */ | |
f075ee0c | 111 | bfd_byte *dwarf_str_buffer; |
d03ba2a1 JJ |
112 | |
113 | /* Length of the loaded .debug_str section. */ | |
114 | unsigned long dwarf_str_size; | |
a13afe8e FF |
115 | |
116 | /* Pointer to the .debug_ranges section loaded into memory. */ | |
117 | bfd_byte *dwarf_ranges_buffer; | |
118 | ||
119 | /* Length of the loaded .debug_ranges section. */ | |
120 | unsigned long dwarf_ranges_size; | |
252b5132 RH |
121 | }; |
122 | ||
a092b084 NC |
123 | struct arange |
124 | { | |
f623be2b RH |
125 | struct arange *next; |
126 | bfd_vma low; | |
127 | bfd_vma high; | |
128 | }; | |
252b5132 | 129 | |
252b5132 | 130 | /* A minimal decoding of DWARF2 compilation units. We only decode |
a092b084 | 131 | what's needed to get to the line number information. */ |
252b5132 | 132 | |
a092b084 NC |
133 | struct comp_unit |
134 | { | |
135 | /* Chain the previously read compilation units. */ | |
f075ee0c | 136 | struct comp_unit *next_unit; |
252b5132 | 137 | |
a092b084 | 138 | /* Keep the bdf convenient (for memory allocation). */ |
f075ee0c | 139 | bfd *abfd; |
252b5132 | 140 | |
09a9d560 | 141 | /* The lowest and highest addresses contained in this compilation |
a092b084 | 142 | unit as specified in the compilation unit header. */ |
f623be2b | 143 | struct arange arange; |
252b5132 | 144 | |
a092b084 | 145 | /* The DW_AT_name attribute (for error messages). */ |
f075ee0c | 146 | char *name; |
252b5132 | 147 | |
a092b084 | 148 | /* The abbrev hash table. */ |
f075ee0c | 149 | struct abbrev_info **abbrevs; |
252b5132 | 150 | |
a092b084 | 151 | /* Note that an error was found by comp_unit_find_nearest_line. */ |
252b5132 RH |
152 | int error; |
153 | ||
a092b084 | 154 | /* The DW_AT_comp_dir attribute. */ |
f075ee0c | 155 | char *comp_dir; |
252b5132 | 156 | |
b34976b6 | 157 | /* TRUE if there is a line number table associated with this comp. unit. */ |
252b5132 | 158 | int stmtlist; |
98591c73 | 159 | |
c0c28ab8 L |
160 | /* Pointer to the current comp_unit so that we can find a given entry |
161 | by its reference. */ | |
f075ee0c | 162 | bfd_byte *info_ptr_unit; |
c0c28ab8 | 163 | |
a092b084 | 164 | /* The offset into .debug_line of the line number table. */ |
252b5132 RH |
165 | unsigned long line_offset; |
166 | ||
a092b084 | 167 | /* Pointer to the first child die for the comp unit. */ |
f075ee0c | 168 | bfd_byte *first_child_die_ptr; |
252b5132 | 169 | |
a092b084 | 170 | /* The end of the comp unit. */ |
f075ee0c | 171 | bfd_byte *end_ptr; |
252b5132 | 172 | |
a092b084 | 173 | /* The decoded line number, NULL if not yet decoded. */ |
f075ee0c | 174 | struct line_info_table *line_table; |
252b5132 | 175 | |
a092b084 | 176 | /* A list of the functions found in this comp. unit. */ |
f075ee0c | 177 | struct funcinfo *function_table; |
252b5132 | 178 | |
d03ba2a1 JJ |
179 | /* Pointer to dwarf2_debug structure. */ |
180 | struct dwarf2_debug *stash; | |
181 | ||
a092b084 | 182 | /* Address size for this unit - from unit header. */ |
252b5132 | 183 | unsigned char addr_size; |
d03ba2a1 JJ |
184 | |
185 | /* Offset size for this unit - from unit header. */ | |
186 | unsigned char offset_size; | |
a13afe8e FF |
187 | |
188 | /* Base address for this unit - from DW_AT_low_pc attribute of | |
189 | DW_TAG_compile_unit DIE */ | |
190 | bfd_vma base_address; | |
252b5132 RH |
191 | }; |
192 | ||
a7b97311 AM |
193 | /* This data structure holds the information of an abbrev. */ |
194 | struct abbrev_info | |
195 | { | |
196 | unsigned int number; /* Number identifying abbrev. */ | |
197 | enum dwarf_tag tag; /* DWARF tag. */ | |
198 | int has_children; /* Boolean. */ | |
199 | unsigned int num_attrs; /* Number of attributes. */ | |
200 | struct attr_abbrev *attrs; /* An array of attribute descriptions. */ | |
201 | struct abbrev_info *next; /* Next in chain. */ | |
202 | }; | |
203 | ||
204 | struct attr_abbrev | |
205 | { | |
206 | enum dwarf_attribute name; | |
207 | enum dwarf_form form; | |
208 | }; | |
209 | ||
210 | #ifndef ABBREV_HASH_SIZE | |
211 | #define ABBREV_HASH_SIZE 121 | |
212 | #endif | |
213 | #ifndef ATTR_ALLOC_CHUNK | |
214 | #define ATTR_ALLOC_CHUNK 4 | |
215 | #endif | |
216 | ||
98591c73 KH |
217 | /* VERBATIM |
218 | The following function up to the END VERBATIM mark are | |
a092b084 | 219 | copied directly from dwarf2read.c. */ |
252b5132 | 220 | |
a092b084 | 221 | /* Read dwarf information from a buffer. */ |
252b5132 RH |
222 | |
223 | static unsigned int | |
f075ee0c | 224 | read_1_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf) |
252b5132 | 225 | { |
818a27ac | 226 | return bfd_get_8 (abfd, buf); |
252b5132 RH |
227 | } |
228 | ||
229 | static int | |
f075ee0c | 230 | read_1_signed_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf) |
252b5132 | 231 | { |
818a27ac | 232 | return bfd_get_signed_8 (abfd, buf); |
252b5132 RH |
233 | } |
234 | ||
235 | static unsigned int | |
f075ee0c | 236 | read_2_bytes (bfd *abfd, bfd_byte *buf) |
252b5132 | 237 | { |
818a27ac | 238 | return bfd_get_16 (abfd, buf); |
252b5132 RH |
239 | } |
240 | ||
252b5132 | 241 | static unsigned int |
f075ee0c | 242 | read_4_bytes (bfd *abfd, bfd_byte *buf) |
252b5132 | 243 | { |
818a27ac | 244 | return bfd_get_32 (abfd, buf); |
252b5132 RH |
245 | } |
246 | ||
8ce8c090 | 247 | static bfd_uint64_t |
f075ee0c | 248 | read_8_bytes (bfd *abfd, bfd_byte *buf) |
252b5132 | 249 | { |
818a27ac | 250 | return bfd_get_64 (abfd, buf); |
252b5132 RH |
251 | } |
252 | ||
f075ee0c | 253 | static bfd_byte * |
818a27ac | 254 | read_n_bytes (bfd *abfd ATTRIBUTE_UNUSED, |
f075ee0c | 255 | bfd_byte *buf, |
818a27ac | 256 | unsigned int size ATTRIBUTE_UNUSED) |
252b5132 RH |
257 | { |
258 | /* If the size of a host char is 8 bits, we can return a pointer | |
259 | to the buffer, otherwise we have to copy the data to a buffer | |
260 | allocated on the temporary obstack. */ | |
261 | return buf; | |
262 | } | |
263 | ||
264 | static char * | |
818a27ac | 265 | read_string (bfd *abfd ATTRIBUTE_UNUSED, |
f075ee0c | 266 | bfd_byte *buf, |
818a27ac | 267 | unsigned int *bytes_read_ptr) |
252b5132 | 268 | { |
d03ba2a1 | 269 | /* Return a pointer to the embedded string. */ |
f075ee0c AM |
270 | char *str = (char *) buf; |
271 | if (*str == '\0') | |
252b5132 RH |
272 | { |
273 | *bytes_read_ptr = 1; | |
274 | return NULL; | |
275 | } | |
98591c73 | 276 | |
f075ee0c AM |
277 | *bytes_read_ptr = strlen (str) + 1; |
278 | return str; | |
252b5132 RH |
279 | } |
280 | ||
d03ba2a1 | 281 | static char * |
818a27ac | 282 | read_indirect_string (struct comp_unit* unit, |
f075ee0c | 283 | bfd_byte *buf, |
818a27ac | 284 | unsigned int *bytes_read_ptr) |
d03ba2a1 | 285 | { |
8ce8c090 | 286 | bfd_uint64_t offset; |
d03ba2a1 | 287 | struct dwarf2_debug *stash = unit->stash; |
f075ee0c | 288 | char *str; |
d03ba2a1 JJ |
289 | |
290 | if (unit->offset_size == 4) | |
291 | offset = read_4_bytes (unit->abfd, buf); | |
292 | else | |
293 | offset = read_8_bytes (unit->abfd, buf); | |
294 | *bytes_read_ptr = unit->offset_size; | |
295 | ||
296 | if (! stash->dwarf_str_buffer) | |
297 | { | |
298 | asection *msec; | |
299 | bfd *abfd = unit->abfd; | |
eea6121a | 300 | bfd_size_type sz; |
d03ba2a1 JJ |
301 | |
302 | msec = bfd_get_section_by_name (abfd, ".debug_str"); | |
303 | if (! msec) | |
304 | { | |
305 | (*_bfd_error_handler) | |
306 | (_("Dwarf Error: Can't find .debug_str section.")); | |
307 | bfd_set_error (bfd_error_bad_value); | |
308 | return NULL; | |
309 | } | |
310 | ||
eea6121a AM |
311 | sz = msec->rawsize ? msec->rawsize : msec->size; |
312 | stash->dwarf_str_size = sz; | |
313 | stash->dwarf_str_buffer = bfd_alloc (abfd, sz); | |
36868d45 | 314 | if (! stash->dwarf_str_buffer) |
d03ba2a1 JJ |
315 | return NULL; |
316 | ||
9f632188 | 317 | if (! bfd_get_section_contents (abfd, msec, stash->dwarf_str_buffer, |
eea6121a | 318 | 0, sz)) |
d03ba2a1 JJ |
319 | return NULL; |
320 | } | |
321 | ||
322 | if (offset >= stash->dwarf_str_size) | |
323 | { | |
f46c2da6 AM |
324 | (*_bfd_error_handler) (_("Dwarf Error: DW_FORM_strp offset (%lu) greater than or equal to .debug_str size (%lu)."), |
325 | (unsigned long) offset, stash->dwarf_str_size); | |
d03ba2a1 JJ |
326 | bfd_set_error (bfd_error_bad_value); |
327 | return NULL; | |
328 | } | |
329 | ||
f075ee0c AM |
330 | str = (char *) stash->dwarf_str_buffer + offset; |
331 | if (*str == '\0') | |
d03ba2a1 | 332 | return NULL; |
f075ee0c | 333 | return str; |
d03ba2a1 JJ |
334 | } |
335 | ||
252b5132 RH |
336 | /* END VERBATIM */ |
337 | ||
8ce8c090 | 338 | static bfd_uint64_t |
f075ee0c | 339 | read_address (struct comp_unit *unit, bfd_byte *buf) |
252b5132 | 340 | { |
ecb651f0 | 341 | switch (unit->addr_size) |
252b5132 | 342 | { |
ecb651f0 | 343 | case 8: |
818a27ac | 344 | return bfd_get_64 (unit->abfd, buf); |
ecb651f0 | 345 | case 4: |
818a27ac | 346 | return bfd_get_32 (unit->abfd, buf); |
ecb651f0 | 347 | case 2: |
818a27ac | 348 | return bfd_get_16 (unit->abfd, buf); |
ecb651f0 NC |
349 | default: |
350 | abort (); | |
252b5132 | 351 | } |
252b5132 RH |
352 | } |
353 | ||
252b5132 RH |
354 | /* Lookup an abbrev_info structure in the abbrev hash table. */ |
355 | ||
356 | static struct abbrev_info * | |
818a27ac | 357 | lookup_abbrev (unsigned int number, struct abbrev_info **abbrevs) |
252b5132 RH |
358 | { |
359 | unsigned int hash_number; | |
360 | struct abbrev_info *abbrev; | |
361 | ||
362 | hash_number = number % ABBREV_HASH_SIZE; | |
363 | abbrev = abbrevs[hash_number]; | |
364 | ||
365 | while (abbrev) | |
366 | { | |
367 | if (abbrev->number == number) | |
368 | return abbrev; | |
369 | else | |
370 | abbrev = abbrev->next; | |
371 | } | |
98591c73 | 372 | |
252b5132 RH |
373 | return NULL; |
374 | } | |
375 | ||
376 | /* In DWARF version 2, the description of the debugging information is | |
377 | stored in a separate .debug_abbrev section. Before we read any | |
378 | dies from a section we read in all abbreviations and install them | |
379 | in a hash table. */ | |
380 | ||
381 | static struct abbrev_info** | |
8ce8c090 | 382 | read_abbrevs (bfd *abfd, bfd_uint64_t offset, struct dwarf2_debug *stash) |
252b5132 RH |
383 | { |
384 | struct abbrev_info **abbrevs; | |
f075ee0c | 385 | bfd_byte *abbrev_ptr; |
252b5132 RH |
386 | struct abbrev_info *cur_abbrev; |
387 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
388 | unsigned int abbrev_form, hash_number; | |
dc810e39 | 389 | bfd_size_type amt; |
252b5132 RH |
390 | |
391 | if (! stash->dwarf_abbrev_buffer) | |
392 | { | |
393 | asection *msec; | |
394 | ||
395 | msec = bfd_get_section_by_name (abfd, ".debug_abbrev"); | |
396 | if (! msec) | |
397 | { | |
398 | (*_bfd_error_handler) (_("Dwarf Error: Can't find .debug_abbrev section.")); | |
399 | bfd_set_error (bfd_error_bad_value); | |
400 | return 0; | |
401 | } | |
98591c73 | 402 | |
eea6121a | 403 | stash->dwarf_abbrev_size = msec->size; |
6e84a906 DJ |
404 | stash->dwarf_abbrev_buffer |
405 | = bfd_simple_get_relocated_section_contents (abfd, msec, NULL, | |
406 | stash->syms); | |
252b5132 RH |
407 | if (! stash->dwarf_abbrev_buffer) |
408 | return 0; | |
252b5132 RH |
409 | } |
410 | ||
f5198f61 | 411 | if (offset >= stash->dwarf_abbrev_size) |
252b5132 | 412 | { |
f46c2da6 AM |
413 | (*_bfd_error_handler) (_("Dwarf Error: Abbrev offset (%lu) greater than or equal to .debug_abbrev size (%lu)."), |
414 | (unsigned long) offset, stash->dwarf_abbrev_size); | |
252b5132 RH |
415 | bfd_set_error (bfd_error_bad_value); |
416 | return 0; | |
417 | } | |
418 | ||
dc810e39 | 419 | amt = sizeof (struct abbrev_info*) * ABBREV_HASH_SIZE; |
818a27ac | 420 | abbrevs = bfd_zalloc (abfd, amt); |
252b5132 RH |
421 | |
422 | abbrev_ptr = stash->dwarf_abbrev_buffer + offset; | |
423 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
424 | abbrev_ptr += bytes_read; | |
425 | ||
a092b084 | 426 | /* Loop until we reach an abbrev number of 0. */ |
252b5132 RH |
427 | while (abbrev_number) |
428 | { | |
dc810e39 | 429 | amt = sizeof (struct abbrev_info); |
818a27ac | 430 | cur_abbrev = bfd_zalloc (abfd, amt); |
252b5132 | 431 | |
a092b084 | 432 | /* Read in abbrev header. */ |
252b5132 | 433 | cur_abbrev->number = abbrev_number; |
d45913a0 DA |
434 | cur_abbrev->tag = (enum dwarf_tag) |
435 | read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
252b5132 RH |
436 | abbrev_ptr += bytes_read; |
437 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
438 | abbrev_ptr += 1; | |
439 | ||
a092b084 | 440 | /* Now read in declarations. */ |
252b5132 RH |
441 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
442 | abbrev_ptr += bytes_read; | |
443 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
444 | abbrev_ptr += bytes_read; | |
98591c73 | 445 | |
252b5132 RH |
446 | while (abbrev_name) |
447 | { | |
448 | if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0) | |
449 | { | |
35330cce NC |
450 | struct attr_abbrev *tmp; |
451 | ||
dc810e39 AM |
452 | amt = cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK; |
453 | amt *= sizeof (struct attr_abbrev); | |
35330cce NC |
454 | tmp = bfd_realloc (cur_abbrev->attrs, amt); |
455 | if (tmp == NULL) | |
456 | { | |
457 | size_t i; | |
458 | ||
459 | for (i = 0; i < ABBREV_HASH_SIZE; i++) | |
460 | { | |
461 | struct abbrev_info *abbrev = abbrevs[i]; | |
462 | ||
463 | while (abbrev) | |
464 | { | |
465 | free (abbrev->attrs); | |
466 | abbrev = abbrev->next; | |
467 | } | |
468 | } | |
469 | return NULL; | |
470 | } | |
471 | cur_abbrev->attrs = tmp; | |
252b5132 | 472 | } |
98591c73 | 473 | |
d45913a0 DA |
474 | cur_abbrev->attrs[cur_abbrev->num_attrs].name |
475 | = (enum dwarf_attribute) abbrev_name; | |
476 | cur_abbrev->attrs[cur_abbrev->num_attrs++].form | |
477 | = (enum dwarf_form) abbrev_form; | |
252b5132 RH |
478 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
479 | abbrev_ptr += bytes_read; | |
480 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
481 | abbrev_ptr += bytes_read; | |
482 | } | |
483 | ||
484 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
485 | cur_abbrev->next = abbrevs[hash_number]; | |
486 | abbrevs[hash_number] = cur_abbrev; | |
487 | ||
488 | /* Get next abbreviation. | |
e82ce529 | 489 | Under Irix6 the abbreviations for a compilation unit are not |
252b5132 RH |
490 | always properly terminated with an abbrev number of 0. |
491 | Exit loop if we encounter an abbreviation which we have | |
492 | already read (which means we are about to read the abbreviations | |
493 | for the next compile unit) or if the end of the abbreviation | |
494 | table is reached. */ | |
495 | if ((unsigned int) (abbrev_ptr - stash->dwarf_abbrev_buffer) | |
496 | >= stash->dwarf_abbrev_size) | |
497 | break; | |
498 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
499 | abbrev_ptr += bytes_read; | |
500 | if (lookup_abbrev (abbrev_number,abbrevs) != NULL) | |
501 | break; | |
502 | } | |
503 | ||
504 | return abbrevs; | |
505 | } | |
506 | ||
cf716c56 | 507 | /* Read an attribute value described by an attribute form. */ |
252b5132 | 508 | |
f075ee0c | 509 | static bfd_byte * |
818a27ac AM |
510 | read_attribute_value (struct attribute *attr, |
511 | unsigned form, | |
512 | struct comp_unit *unit, | |
f075ee0c | 513 | bfd_byte *info_ptr) |
252b5132 RH |
514 | { |
515 | bfd *abfd = unit->abfd; | |
516 | unsigned int bytes_read; | |
517 | struct dwarf_block *blk; | |
dc810e39 | 518 | bfd_size_type amt; |
252b5132 | 519 | |
d45913a0 | 520 | attr->form = (enum dwarf_form) form; |
98591c73 | 521 | |
cf716c56 | 522 | switch (form) |
252b5132 RH |
523 | { |
524 | case DW_FORM_addr: | |
0cc1cf99 | 525 | /* FIXME: DWARF3 draft says DW_FORM_ref_addr is offset_size. */ |
252b5132 | 526 | case DW_FORM_ref_addr: |
482e2e37 | 527 | attr->u.val = read_address (unit, info_ptr); |
252b5132 RH |
528 | info_ptr += unit->addr_size; |
529 | break; | |
530 | case DW_FORM_block2: | |
dc810e39 | 531 | amt = sizeof (struct dwarf_block); |
818a27ac | 532 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
533 | blk->size = read_2_bytes (abfd, info_ptr); |
534 | info_ptr += 2; | |
535 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
536 | info_ptr += blk->size; | |
482e2e37 | 537 | attr->u.blk = blk; |
252b5132 RH |
538 | break; |
539 | case DW_FORM_block4: | |
dc810e39 | 540 | amt = sizeof (struct dwarf_block); |
818a27ac | 541 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
542 | blk->size = read_4_bytes (abfd, info_ptr); |
543 | info_ptr += 4; | |
544 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
545 | info_ptr += blk->size; | |
482e2e37 | 546 | attr->u.blk = blk; |
252b5132 RH |
547 | break; |
548 | case DW_FORM_data2: | |
482e2e37 | 549 | attr->u.val = read_2_bytes (abfd, info_ptr); |
252b5132 RH |
550 | info_ptr += 2; |
551 | break; | |
552 | case DW_FORM_data4: | |
482e2e37 | 553 | attr->u.val = read_4_bytes (abfd, info_ptr); |
252b5132 RH |
554 | info_ptr += 4; |
555 | break; | |
556 | case DW_FORM_data8: | |
482e2e37 | 557 | attr->u.val = read_8_bytes (abfd, info_ptr); |
252b5132 RH |
558 | info_ptr += 8; |
559 | break; | |
560 | case DW_FORM_string: | |
482e2e37 | 561 | attr->u.str = read_string (abfd, info_ptr, &bytes_read); |
252b5132 RH |
562 | info_ptr += bytes_read; |
563 | break; | |
d03ba2a1 | 564 | case DW_FORM_strp: |
482e2e37 | 565 | attr->u.str = read_indirect_string (unit, info_ptr, &bytes_read); |
d03ba2a1 JJ |
566 | info_ptr += bytes_read; |
567 | break; | |
252b5132 | 568 | case DW_FORM_block: |
dc810e39 | 569 | amt = sizeof (struct dwarf_block); |
818a27ac | 570 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
571 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
572 | info_ptr += bytes_read; | |
573 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
574 | info_ptr += blk->size; | |
482e2e37 | 575 | attr->u.blk = blk; |
252b5132 RH |
576 | break; |
577 | case DW_FORM_block1: | |
dc810e39 | 578 | amt = sizeof (struct dwarf_block); |
818a27ac | 579 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
580 | blk->size = read_1_byte (abfd, info_ptr); |
581 | info_ptr += 1; | |
582 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
583 | info_ptr += blk->size; | |
482e2e37 | 584 | attr->u.blk = blk; |
252b5132 RH |
585 | break; |
586 | case DW_FORM_data1: | |
482e2e37 | 587 | attr->u.val = read_1_byte (abfd, info_ptr); |
252b5132 RH |
588 | info_ptr += 1; |
589 | break; | |
590 | case DW_FORM_flag: | |
482e2e37 | 591 | attr->u.val = read_1_byte (abfd, info_ptr); |
252b5132 RH |
592 | info_ptr += 1; |
593 | break; | |
594 | case DW_FORM_sdata: | |
482e2e37 | 595 | attr->u.sval = read_signed_leb128 (abfd, info_ptr, &bytes_read); |
252b5132 RH |
596 | info_ptr += bytes_read; |
597 | break; | |
598 | case DW_FORM_udata: | |
482e2e37 | 599 | attr->u.val = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
252b5132 RH |
600 | info_ptr += bytes_read; |
601 | break; | |
602 | case DW_FORM_ref1: | |
482e2e37 | 603 | attr->u.val = read_1_byte (abfd, info_ptr); |
252b5132 RH |
604 | info_ptr += 1; |
605 | break; | |
606 | case DW_FORM_ref2: | |
482e2e37 | 607 | attr->u.val = read_2_bytes (abfd, info_ptr); |
252b5132 RH |
608 | info_ptr += 2; |
609 | break; | |
610 | case DW_FORM_ref4: | |
482e2e37 | 611 | attr->u.val = read_4_bytes (abfd, info_ptr); |
252b5132 RH |
612 | info_ptr += 4; |
613 | break; | |
81edd86d | 614 | case DW_FORM_ref8: |
482e2e37 | 615 | attr->u.val = read_8_bytes (abfd, info_ptr); |
81edd86d MM |
616 | info_ptr += 8; |
617 | break; | |
252b5132 | 618 | case DW_FORM_ref_udata: |
482e2e37 | 619 | attr->u.val = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
252b5132 RH |
620 | info_ptr += bytes_read; |
621 | break; | |
252b5132 | 622 | case DW_FORM_indirect: |
cf716c56 RH |
623 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
624 | info_ptr += bytes_read; | |
625 | info_ptr = read_attribute_value (attr, form, unit, info_ptr); | |
626 | break; | |
252b5132 | 627 | default: |
f46c2da6 | 628 | (*_bfd_error_handler) (_("Dwarf Error: Invalid or unhandled FORM value: %u."), |
cf716c56 | 629 | form); |
252b5132 RH |
630 | bfd_set_error (bfd_error_bad_value); |
631 | } | |
632 | return info_ptr; | |
633 | } | |
634 | ||
cf716c56 RH |
635 | /* Read an attribute described by an abbreviated attribute. */ |
636 | ||
f075ee0c | 637 | static bfd_byte * |
818a27ac AM |
638 | read_attribute (struct attribute *attr, |
639 | struct attr_abbrev *abbrev, | |
640 | struct comp_unit *unit, | |
f075ee0c | 641 | bfd_byte *info_ptr) |
cf716c56 RH |
642 | { |
643 | attr->name = abbrev->name; | |
644 | info_ptr = read_attribute_value (attr, abbrev->form, unit, info_ptr); | |
645 | return info_ptr; | |
646 | } | |
647 | ||
a092b084 | 648 | /* Source line information table routines. */ |
252b5132 RH |
649 | |
650 | #define FILE_ALLOC_CHUNK 5 | |
651 | #define DIR_ALLOC_CHUNK 5 | |
652 | ||
a092b084 NC |
653 | struct line_info |
654 | { | |
252b5132 | 655 | struct line_info* prev_line; |
252b5132 | 656 | bfd_vma address; |
f075ee0c | 657 | char *filename; |
252b5132 RH |
658 | unsigned int line; |
659 | unsigned int column; | |
a092b084 | 660 | int end_sequence; /* End of (sequential) code sequence. */ |
252b5132 RH |
661 | }; |
662 | ||
a092b084 NC |
663 | struct fileinfo |
664 | { | |
252b5132 RH |
665 | char *name; |
666 | unsigned int dir; | |
667 | unsigned int time; | |
668 | unsigned int size; | |
669 | }; | |
670 | ||
a092b084 NC |
671 | struct line_info_table |
672 | { | |
252b5132 | 673 | bfd* abfd; |
252b5132 RH |
674 | unsigned int num_files; |
675 | unsigned int num_dirs; | |
f075ee0c AM |
676 | char *comp_dir; |
677 | char **dirs; | |
252b5132 | 678 | struct fileinfo* files; |
e82ce529 AM |
679 | struct line_info* last_line; /* largest VMA */ |
680 | struct line_info* lcl_head; /* local head; used in 'add_line_info' */ | |
252b5132 RH |
681 | }; |
682 | ||
1ee24f27 DJ |
683 | struct funcinfo |
684 | { | |
685 | struct funcinfo *prev_func; | |
f075ee0c | 686 | char *name; |
a13afe8e | 687 | struct arange arange; |
1ee24f27 DJ |
688 | }; |
689 | ||
af3ef9fe NC |
690 | /* Adds a new entry to the line_info list in the line_info_table, ensuring |
691 | that the list is sorted. Note that the line_info list is sorted from | |
692 | highest to lowest VMA (with possible duplicates); that is, | |
693 | line_info->prev_line always accesses an equal or smaller VMA. */ | |
694 | ||
98591c73 | 695 | static void |
818a27ac AM |
696 | add_line_info (struct line_info_table *table, |
697 | bfd_vma address, | |
698 | char *filename, | |
699 | unsigned int line, | |
700 | unsigned int column, | |
701 | int end_sequence) | |
252b5132 | 702 | { |
dc810e39 | 703 | bfd_size_type amt = sizeof (struct line_info); |
818a27ac | 704 | struct line_info* info = bfd_alloc (table->abfd, amt); |
252b5132 | 705 | |
e82ce529 AM |
706 | /* Find the correct location for 'info'. Normally we will receive |
707 | new line_info data 1) in order and 2) with increasing VMAs. | |
708 | However some compilers break the rules (cf. decode_line_info) and | |
709 | so we include some heuristics for quickly finding the correct | |
710 | location for 'info'. In particular, these heuristics optimize for | |
711 | the common case in which the VMA sequence that we receive is a | |
712 | list of locally sorted VMAs such as | |
713 | p...z a...j (where a < j < p < z) | |
252b5132 | 714 | |
e82ce529 AM |
715 | Note: table->lcl_head is used to head an *actual* or *possible* |
716 | sequence within the list (such as a...j) that is not directly | |
717 | headed by table->last_line | |
718 | ||
719 | Note: we may receive duplicate entries from 'decode_line_info'. */ | |
720 | ||
721 | while (1) | |
722 | if (!table->last_line | |
723 | || address >= table->last_line->address) | |
724 | { | |
725 | /* Normal case: add 'info' to the beginning of the list */ | |
726 | info->prev_line = table->last_line; | |
727 | table->last_line = info; | |
728 | ||
729 | /* lcl_head: initialize to head a *possible* sequence at the end. */ | |
730 | if (!table->lcl_head) | |
731 | table->lcl_head = info; | |
732 | break; | |
733 | } | |
734 | else if (!table->lcl_head->prev_line | |
735 | && table->lcl_head->address > address) | |
736 | { | |
737 | /* Abnormal but easy: lcl_head is 1) at the *end* of the line | |
738 | list and 2) the head of 'info'. */ | |
739 | info->prev_line = NULL; | |
740 | table->lcl_head->prev_line = info; | |
741 | break; | |
742 | } | |
743 | else if (table->lcl_head->prev_line | |
744 | && table->lcl_head->address > address | |
745 | && address >= table->lcl_head->prev_line->address) | |
746 | { | |
747 | /* Abnormal but easy: lcl_head is 1) in the *middle* of the line | |
748 | list and 2) the head of 'info'. */ | |
749 | info->prev_line = table->lcl_head->prev_line; | |
750 | table->lcl_head->prev_line = info; | |
751 | break; | |
752 | } | |
753 | else | |
754 | { | |
755 | /* Abnormal and hard: Neither 'last_line' nor 'lcl_head' are valid | |
756 | heads for 'info'. Reset 'lcl_head' and repeat. */ | |
757 | struct line_info* li2 = table->last_line; /* always non-NULL */ | |
758 | struct line_info* li1 = li2->prev_line; | |
759 | ||
760 | while (li1) | |
761 | { | |
762 | if (li2->address > address && address >= li1->address) | |
763 | break; | |
764 | ||
765 | li2 = li1; /* always non-NULL */ | |
766 | li1 = li1->prev_line; | |
767 | } | |
768 | table->lcl_head = li2; | |
769 | } | |
770 | ||
771 | /* Set member data of 'info'. */ | |
252b5132 | 772 | info->address = address; |
252b5132 RH |
773 | info->line = line; |
774 | info->column = column; | |
159002ff | 775 | info->end_sequence = end_sequence; |
d63fd5d1 | 776 | |
eb61d2d6 | 777 | if (filename && filename[0]) |
d63fd5d1 | 778 | { |
eb61d2d6 | 779 | info->filename = bfd_alloc (table->abfd, strlen (filename) + 1); |
d63fd5d1 NC |
780 | if (info->filename) |
781 | strcpy (info->filename, filename); | |
782 | } | |
783 | else | |
784 | info->filename = NULL; | |
252b5132 RH |
785 | } |
786 | ||
5ed6aba4 | 787 | /* Extract a fully qualified filename from a line info table. |
af3ef9fe NC |
788 | The returned string has been malloc'ed and it is the caller's |
789 | responsibility to free it. */ | |
5ed6aba4 | 790 | |
a092b084 | 791 | static char * |
818a27ac | 792 | concat_filename (struct line_info_table *table, unsigned int file) |
252b5132 | 793 | { |
f075ee0c | 794 | char *filename; |
159002ff RH |
795 | |
796 | if (file - 1 >= table->num_files) | |
797 | { | |
dcdea4f4 AM |
798 | (*_bfd_error_handler) |
799 | (_("Dwarf Error: mangled line number section (bad file number).")); | |
af3ef9fe | 800 | return strdup ("<unknown>"); |
159002ff RH |
801 | } |
802 | ||
803 | filename = table->files[file - 1].name; | |
5ed6aba4 | 804 | |
af3ef9fe | 805 | if (! IS_ABSOLUTE_PATH (filename)) |
252b5132 | 806 | { |
f075ee0c | 807 | char *dirname = (table->files[file - 1].dir |
252b5132 RH |
808 | ? table->dirs[table->files[file - 1].dir - 1] |
809 | : table->comp_dir); | |
0dafd5f6 | 810 | |
af3ef9fe NC |
811 | /* Not all tools set DW_AT_comp_dir, so dirname may be unknown. |
812 | The best we can do is return the filename part. */ | |
813 | if (dirname != NULL) | |
814 | { | |
815 | unsigned int len = strlen (dirname) + strlen (filename) + 2; | |
816 | char * name; | |
817 | ||
818 | name = bfd_malloc (len); | |
819 | if (name) | |
820 | sprintf (name, "%s/%s", dirname, filename); | |
821 | return name; | |
822 | } | |
252b5132 | 823 | } |
af3ef9fe NC |
824 | |
825 | return strdup (filename); | |
252b5132 RH |
826 | } |
827 | ||
f623be2b | 828 | static void |
a13afe8e | 829 | arange_add (bfd *abfd, struct arange *first_arange, bfd_vma low_pc, bfd_vma high_pc) |
f623be2b RH |
830 | { |
831 | struct arange *arange; | |
832 | ||
a13afe8e FF |
833 | /* If the first arange is empty, use it. */ |
834 | if (first_arange->high == 0) | |
835 | { | |
836 | first_arange->low = low_pc; | |
837 | first_arange->high = high_pc; | |
838 | return; | |
839 | } | |
98591c73 | 840 | |
a13afe8e FF |
841 | /* Next see if we can cheaply extend an existing range. */ |
842 | arange = first_arange; | |
f623be2b RH |
843 | do |
844 | { | |
845 | if (low_pc == arange->high) | |
846 | { | |
847 | arange->high = high_pc; | |
848 | return; | |
849 | } | |
850 | if (high_pc == arange->low) | |
851 | { | |
852 | arange->low = low_pc; | |
853 | return; | |
854 | } | |
855 | arange = arange->next; | |
856 | } | |
857 | while (arange); | |
858 | ||
a13afe8e FF |
859 | /* Need to allocate a new arange and insert it into the arange list. |
860 | Order isn't significant, so just insert after the first arange. */ | |
861 | arange = bfd_zalloc (abfd, sizeof (*arange)); | |
f623be2b RH |
862 | arange->low = low_pc; |
863 | arange->high = high_pc; | |
a13afe8e FF |
864 | arange->next = first_arange->next; |
865 | first_arange->next = arange; | |
f623be2b RH |
866 | } |
867 | ||
a092b084 | 868 | /* Decode the line number information for UNIT. */ |
252b5132 RH |
869 | |
870 | static struct line_info_table* | |
818a27ac | 871 | decode_line_info (struct comp_unit *unit, struct dwarf2_debug *stash) |
252b5132 RH |
872 | { |
873 | bfd *abfd = unit->abfd; | |
252b5132 | 874 | struct line_info_table* table; |
f075ee0c AM |
875 | bfd_byte *line_ptr; |
876 | bfd_byte *line_end; | |
252b5132 | 877 | struct line_head lh; |
d03ba2a1 | 878 | unsigned int i, bytes_read, offset_size; |
252b5132 RH |
879 | char *cur_file, *cur_dir; |
880 | unsigned char op_code, extended_op, adj_opcode; | |
dc810e39 | 881 | bfd_size_type amt; |
252b5132 | 882 | |
69dd2e2d | 883 | if (! stash->dwarf_line_buffer) |
252b5132 RH |
884 | { |
885 | asection *msec; | |
252b5132 RH |
886 | |
887 | msec = bfd_get_section_by_name (abfd, ".debug_line"); | |
888 | if (! msec) | |
889 | { | |
890 | (*_bfd_error_handler) (_("Dwarf Error: Can't find .debug_line section.")); | |
891 | bfd_set_error (bfd_error_bad_value); | |
892 | return 0; | |
893 | } | |
98591c73 | 894 | |
eea6121a | 895 | stash->dwarf_line_size = msec->size; |
6e84a906 DJ |
896 | stash->dwarf_line_buffer |
897 | = bfd_simple_get_relocated_section_contents (abfd, msec, NULL, | |
898 | stash->syms); | |
f623be2b | 899 | if (! stash->dwarf_line_buffer) |
252b5132 | 900 | return 0; |
252b5132 RH |
901 | } |
902 | ||
6e84a906 DJ |
903 | /* It is possible to get a bad value for the line_offset. Validate |
904 | it here so that we won't get a segfault below. */ | |
ccdb16fc JW |
905 | if (unit->line_offset >= stash->dwarf_line_size) |
906 | { | |
f46c2da6 | 907 | (*_bfd_error_handler) (_("Dwarf Error: Line offset (%lu) greater than or equal to .debug_line size (%lu)."), |
ccdb16fc JW |
908 | unit->line_offset, stash->dwarf_line_size); |
909 | bfd_set_error (bfd_error_bad_value); | |
910 | return 0; | |
911 | } | |
912 | ||
dc810e39 | 913 | amt = sizeof (struct line_info_table); |
818a27ac | 914 | table = bfd_alloc (abfd, amt); |
252b5132 RH |
915 | table->abfd = abfd; |
916 | table->comp_dir = unit->comp_dir; | |
917 | ||
918 | table->num_files = 0; | |
919 | table->files = NULL; | |
920 | ||
921 | table->num_dirs = 0; | |
922 | table->dirs = NULL; | |
923 | ||
159002ff RH |
924 | table->files = NULL; |
925 | table->last_line = NULL; | |
e82ce529 | 926 | table->lcl_head = NULL; |
159002ff | 927 | |
69dd2e2d | 928 | line_ptr = stash->dwarf_line_buffer + unit->line_offset; |
252b5132 | 929 | |
a092b084 | 930 | /* Read in the prologue. */ |
91a4d569 AM |
931 | lh.total_length = read_4_bytes (abfd, line_ptr); |
932 | line_ptr += 4; | |
933 | offset_size = 4; | |
934 | if (lh.total_length == 0xffffffff) | |
dae2dd0d | 935 | { |
dae2dd0d NC |
936 | lh.total_length = read_8_bytes (abfd, line_ptr); |
937 | line_ptr += 8; | |
938 | offset_size = 8; | |
939 | } | |
91a4d569 | 940 | else if (lh.total_length == 0 && unit->addr_size == 8) |
d03ba2a1 | 941 | { |
91a4d569 AM |
942 | /* Handle (non-standard) 64-bit DWARF2 formats. */ |
943 | lh.total_length = read_4_bytes (abfd, line_ptr); | |
944 | line_ptr += 4; | |
d03ba2a1 JJ |
945 | offset_size = 8; |
946 | } | |
252b5132 RH |
947 | line_end = line_ptr + lh.total_length; |
948 | lh.version = read_2_bytes (abfd, line_ptr); | |
949 | line_ptr += 2; | |
d03ba2a1 JJ |
950 | if (offset_size == 4) |
951 | lh.prologue_length = read_4_bytes (abfd, line_ptr); | |
952 | else | |
953 | lh.prologue_length = read_8_bytes (abfd, line_ptr); | |
954 | line_ptr += offset_size; | |
252b5132 RH |
955 | lh.minimum_instruction_length = read_1_byte (abfd, line_ptr); |
956 | line_ptr += 1; | |
957 | lh.default_is_stmt = read_1_byte (abfd, line_ptr); | |
958 | line_ptr += 1; | |
959 | lh.line_base = read_1_signed_byte (abfd, line_ptr); | |
960 | line_ptr += 1; | |
961 | lh.line_range = read_1_byte (abfd, line_ptr); | |
962 | line_ptr += 1; | |
963 | lh.opcode_base = read_1_byte (abfd, line_ptr); | |
964 | line_ptr += 1; | |
dc810e39 | 965 | amt = lh.opcode_base * sizeof (unsigned char); |
818a27ac | 966 | lh.standard_opcode_lengths = bfd_alloc (abfd, amt); |
252b5132 RH |
967 | |
968 | lh.standard_opcode_lengths[0] = 1; | |
98591c73 | 969 | |
252b5132 RH |
970 | for (i = 1; i < lh.opcode_base; ++i) |
971 | { | |
972 | lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
973 | line_ptr += 1; | |
974 | } | |
975 | ||
a092b084 | 976 | /* Read directory table. */ |
252b5132 RH |
977 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
978 | { | |
979 | line_ptr += bytes_read; | |
98591c73 | 980 | |
252b5132 RH |
981 | if ((table->num_dirs % DIR_ALLOC_CHUNK) == 0) |
982 | { | |
35330cce NC |
983 | char **tmp; |
984 | ||
dc810e39 AM |
985 | amt = table->num_dirs + DIR_ALLOC_CHUNK; |
986 | amt *= sizeof (char *); | |
35330cce NC |
987 | |
988 | tmp = bfd_realloc (table->dirs, amt); | |
989 | if (tmp == NULL) | |
990 | { | |
991 | free (table->dirs); | |
992 | return NULL; | |
993 | } | |
994 | table->dirs = tmp; | |
252b5132 | 995 | } |
98591c73 | 996 | |
252b5132 RH |
997 | table->dirs[table->num_dirs++] = cur_dir; |
998 | } | |
98591c73 | 999 | |
252b5132 RH |
1000 | line_ptr += bytes_read; |
1001 | ||
a092b084 | 1002 | /* Read file name table. */ |
252b5132 RH |
1003 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
1004 | { | |
1005 | line_ptr += bytes_read; | |
98591c73 | 1006 | |
252b5132 RH |
1007 | if ((table->num_files % FILE_ALLOC_CHUNK) == 0) |
1008 | { | |
35330cce NC |
1009 | struct fileinfo *tmp; |
1010 | ||
dc810e39 AM |
1011 | amt = table->num_files + FILE_ALLOC_CHUNK; |
1012 | amt *= sizeof (struct fileinfo); | |
35330cce NC |
1013 | |
1014 | tmp = bfd_realloc (table->files, amt); | |
1015 | if (tmp == NULL) | |
1016 | { | |
1017 | free (table->files); | |
1018 | free (table->dirs); | |
1019 | return NULL; | |
1020 | } | |
1021 | table->files = tmp; | |
252b5132 | 1022 | } |
98591c73 | 1023 | |
252b5132 RH |
1024 | table->files[table->num_files].name = cur_file; |
1025 | table->files[table->num_files].dir = | |
1026 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1027 | line_ptr += bytes_read; | |
1028 | table->files[table->num_files].time = | |
1029 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1030 | line_ptr += bytes_read; | |
1031 | table->files[table->num_files].size = | |
1032 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1033 | line_ptr += bytes_read; | |
1034 | table->num_files++; | |
1035 | } | |
98591c73 | 1036 | |
252b5132 RH |
1037 | line_ptr += bytes_read; |
1038 | ||
1039 | /* Read the statement sequences until there's nothing left. */ | |
1040 | while (line_ptr < line_end) | |
1041 | { | |
a092b084 | 1042 | /* State machine registers. */ |
252b5132 | 1043 | bfd_vma address = 0; |
8bfd78b3 | 1044 | char * filename = table->num_files ? concat_filename (table, 1) : NULL; |
252b5132 RH |
1045 | unsigned int line = 1; |
1046 | unsigned int column = 0; | |
1047 | int is_stmt = lh.default_is_stmt; | |
1048 | int basic_block = 0; | |
e2f6d277 NC |
1049 | int end_sequence = 0; |
1050 | /* eraxxon@alumni.rice.edu: Against the DWARF2 specs, some | |
e82ce529 AM |
1051 | compilers generate address sequences that are wildly out of |
1052 | order using DW_LNE_set_address (e.g. Intel C++ 6.0 compiler | |
1053 | for ia64-Linux). Thus, to determine the low and high | |
1054 | address, we must compare on every DW_LNS_copy, etc. */ | |
e2f6d277 NC |
1055 | bfd_vma low_pc = 0; |
1056 | bfd_vma high_pc = 0; | |
252b5132 | 1057 | |
a092b084 | 1058 | /* Decode the table. */ |
252b5132 RH |
1059 | while (! end_sequence) |
1060 | { | |
1061 | op_code = read_1_byte (abfd, line_ptr); | |
1062 | line_ptr += 1; | |
98591c73 | 1063 | |
1a509dcc | 1064 | if (op_code >= lh.opcode_base) |
e2f6d277 NC |
1065 | { |
1066 | /* Special operand. */ | |
1a509dcc GK |
1067 | adj_opcode = op_code - lh.opcode_base; |
1068 | address += (adj_opcode / lh.line_range) | |
1069 | * lh.minimum_instruction_length; | |
1070 | line += lh.line_base + (adj_opcode % lh.line_range); | |
1071 | /* Append row to matrix using current values. */ | |
1072 | add_line_info (table, address, filename, line, column, 0); | |
1073 | basic_block = 1; | |
e2f6d277 NC |
1074 | if (low_pc == 0 || address < low_pc) |
1075 | low_pc = address; | |
1076 | if (address > high_pc) | |
1077 | high_pc = address; | |
1a509dcc GK |
1078 | } |
1079 | else switch (op_code) | |
252b5132 RH |
1080 | { |
1081 | case DW_LNS_extended_op: | |
e2f6d277 NC |
1082 | /* Ignore length. */ |
1083 | line_ptr += 1; | |
252b5132 RH |
1084 | extended_op = read_1_byte (abfd, line_ptr); |
1085 | line_ptr += 1; | |
e2f6d277 | 1086 | |
252b5132 RH |
1087 | switch (extended_op) |
1088 | { | |
1089 | case DW_LNE_end_sequence: | |
1090 | end_sequence = 1; | |
f623be2b RH |
1091 | add_line_info (table, address, filename, line, column, |
1092 | end_sequence); | |
e2f6d277 NC |
1093 | if (low_pc == 0 || address < low_pc) |
1094 | low_pc = address; | |
1095 | if (address > high_pc) | |
1096 | high_pc = address; | |
a13afe8e | 1097 | arange_add (unit->abfd, &unit->arange, low_pc, high_pc); |
252b5132 RH |
1098 | break; |
1099 | case DW_LNE_set_address: | |
1100 | address = read_address (unit, line_ptr); | |
1101 | line_ptr += unit->addr_size; | |
1102 | break; | |
1103 | case DW_LNE_define_file: | |
1104 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
1105 | line_ptr += bytes_read; | |
1106 | if ((table->num_files % FILE_ALLOC_CHUNK) == 0) | |
1107 | { | |
35330cce NC |
1108 | struct fileinfo *tmp; |
1109 | ||
dc810e39 AM |
1110 | amt = table->num_files + FILE_ALLOC_CHUNK; |
1111 | amt *= sizeof (struct fileinfo); | |
35330cce NC |
1112 | tmp = bfd_realloc (table->files, amt); |
1113 | if (tmp == NULL) | |
1114 | { | |
1115 | free (table->files); | |
1116 | free (table->dirs); | |
1117 | free (filename); | |
1118 | return NULL; | |
1119 | } | |
1120 | table->files = tmp; | |
252b5132 RH |
1121 | } |
1122 | table->files[table->num_files].name = cur_file; | |
1123 | table->files[table->num_files].dir = | |
1124 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1125 | line_ptr += bytes_read; | |
1126 | table->files[table->num_files].time = | |
1127 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1128 | line_ptr += bytes_read; | |
1129 | table->files[table->num_files].size = | |
1130 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1131 | line_ptr += bytes_read; | |
1132 | table->num_files++; | |
1133 | break; | |
1134 | default: | |
1135 | (*_bfd_error_handler) (_("Dwarf Error: mangled line number section.")); | |
1136 | bfd_set_error (bfd_error_bad_value); | |
35330cce NC |
1137 | free (filename); |
1138 | free (table->files); | |
1139 | free (table->dirs); | |
1140 | return NULL; | |
252b5132 RH |
1141 | } |
1142 | break; | |
1143 | case DW_LNS_copy: | |
159002ff | 1144 | add_line_info (table, address, filename, line, column, 0); |
252b5132 | 1145 | basic_block = 0; |
e2f6d277 NC |
1146 | if (low_pc == 0 || address < low_pc) |
1147 | low_pc = address; | |
1148 | if (address > high_pc) | |
1149 | high_pc = address; | |
252b5132 RH |
1150 | break; |
1151 | case DW_LNS_advance_pc: | |
1152 | address += lh.minimum_instruction_length | |
1153 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1154 | line_ptr += bytes_read; | |
1155 | break; | |
1156 | case DW_LNS_advance_line: | |
1157 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
1158 | line_ptr += bytes_read; | |
1159 | break; | |
1160 | case DW_LNS_set_file: | |
1161 | { | |
1162 | unsigned int file; | |
1163 | ||
e2f6d277 NC |
1164 | /* The file and directory tables are 0 |
1165 | based, the references are 1 based. */ | |
252b5132 RH |
1166 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
1167 | line_ptr += bytes_read; | |
af3ef9fe NC |
1168 | if (filename) |
1169 | free (filename); | |
252b5132 RH |
1170 | filename = concat_filename (table, file); |
1171 | break; | |
1172 | } | |
1173 | case DW_LNS_set_column: | |
1174 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1175 | line_ptr += bytes_read; | |
1176 | break; | |
1177 | case DW_LNS_negate_stmt: | |
1178 | is_stmt = (!is_stmt); | |
1179 | break; | |
1180 | case DW_LNS_set_basic_block: | |
1181 | basic_block = 1; | |
1182 | break; | |
1183 | case DW_LNS_const_add_pc: | |
159002ff RH |
1184 | address += lh.minimum_instruction_length |
1185 | * ((255 - lh.opcode_base) / lh.line_range); | |
252b5132 RH |
1186 | break; |
1187 | case DW_LNS_fixed_advance_pc: | |
1188 | address += read_2_bytes (abfd, line_ptr); | |
1189 | line_ptr += 2; | |
1190 | break; | |
1a509dcc | 1191 | default: |
e2f6d277 | 1192 | { |
1a509dcc | 1193 | int i; |
5ed6aba4 | 1194 | |
e2f6d277 | 1195 | /* Unknown standard opcode, ignore it. */ |
1a509dcc GK |
1196 | for (i = 0; i < lh.standard_opcode_lengths[op_code]; i++) |
1197 | { | |
1198 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1199 | line_ptr += bytes_read; | |
1200 | } | |
1201 | } | |
252b5132 RH |
1202 | } |
1203 | } | |
5ed6aba4 | 1204 | |
af3ef9fe NC |
1205 | if (filename) |
1206 | free (filename); | |
252b5132 RH |
1207 | } |
1208 | ||
1209 | return table; | |
1210 | } | |
1211 | ||
b34976b6 AM |
1212 | /* If ADDR is within TABLE set the output parameters and return TRUE, |
1213 | otherwise return FALSE. The output parameters, FILENAME_PTR and | |
a092b084 | 1214 | LINENUMBER_PTR, are pointers to the objects to be filled in. */ |
252b5132 | 1215 | |
b34976b6 | 1216 | static bfd_boolean |
818a27ac AM |
1217 | lookup_address_in_line_info_table (struct line_info_table *table, |
1218 | bfd_vma addr, | |
1219 | struct funcinfo *function, | |
1220 | const char **filename_ptr, | |
1221 | unsigned int *linenumber_ptr) | |
252b5132 | 1222 | { |
e82ce529 | 1223 | /* Note: table->last_line should be a descendingly sorted list. */ |
159002ff | 1224 | struct line_info* next_line = table->last_line; |
e82ce529 AM |
1225 | struct line_info* each_line = NULL; |
1226 | *filename_ptr = NULL; | |
98591c73 | 1227 | |
159002ff | 1228 | if (!next_line) |
b34976b6 | 1229 | return FALSE; |
159002ff RH |
1230 | |
1231 | each_line = next_line->prev_line; | |
1232 | ||
e82ce529 AM |
1233 | /* Check for large addresses */ |
1234 | if (addr > next_line->address) | |
1235 | each_line = NULL; /* ensure we skip over the normal case */ | |
1236 | ||
1237 | /* Normal case: search the list; save */ | |
159002ff | 1238 | while (each_line && next_line) |
252b5132 | 1239 | { |
e82ce529 AM |
1240 | /* If we have an address match, save this info. This allows us |
1241 | to return as good as results as possible for strange debugging | |
1242 | info. */ | |
b34976b6 | 1243 | bfd_boolean addr_match = FALSE; |
a13afe8e | 1244 | if (each_line->address <= addr && addr < next_line->address) |
252b5132 | 1245 | { |
b34976b6 | 1246 | addr_match = TRUE; |
e82ce529 | 1247 | |
1ee24f27 DJ |
1248 | /* If this line appears to span functions, and addr is in the |
1249 | later function, return the first line of that function instead | |
1250 | of the last line of the earlier one. This check is for GCC | |
1251 | 2.95, which emits the first line number for a function late. */ | |
a13afe8e FF |
1252 | |
1253 | if (function != NULL) | |
1ee24f27 | 1254 | { |
a13afe8e FF |
1255 | bfd_vma lowest_pc; |
1256 | struct arange *arange; | |
1257 | ||
1258 | /* Find the lowest address in the function's range list */ | |
1259 | lowest_pc = function->arange.low; | |
1260 | for (arange = &function->arange; | |
1261 | arange; | |
1262 | arange = arange->next) | |
1263 | { | |
1264 | if (function->arange.low < lowest_pc) | |
1265 | lowest_pc = function->arange.low; | |
1266 | } | |
1267 | /* Check for spanning function and set outgoing line info */ | |
1268 | if (addr >= lowest_pc | |
1269 | && each_line->address < lowest_pc | |
1270 | && next_line->address > lowest_pc) | |
1271 | { | |
1272 | *filename_ptr = next_line->filename; | |
1273 | *linenumber_ptr = next_line->line; | |
1274 | } | |
1275 | else | |
1276 | { | |
1277 | *filename_ptr = each_line->filename; | |
1278 | *linenumber_ptr = each_line->line; | |
1279 | } | |
1ee24f27 | 1280 | } |
252b5132 | 1281 | } |
e82ce529 AM |
1282 | |
1283 | if (addr_match && !each_line->end_sequence) | |
b34976b6 | 1284 | return TRUE; /* we have definitely found what we want */ |
e82ce529 | 1285 | |
159002ff RH |
1286 | next_line = each_line; |
1287 | each_line = each_line->prev_line; | |
252b5132 | 1288 | } |
98591c73 | 1289 | |
e82ce529 AM |
1290 | /* At this point each_line is NULL but next_line is not. If we found |
1291 | a candidate end-of-sequence point in the loop above, we can return | |
1292 | that (compatibility with a bug in the Intel compiler); otherwise, | |
1293 | assuming that we found the containing function for this address in | |
1294 | this compilation unit, return the first line we have a number for | |
1295 | (compatibility with GCC 2.95). */ | |
1296 | if (*filename_ptr == NULL && function != NULL) | |
1ee24f27 DJ |
1297 | { |
1298 | *filename_ptr = next_line->filename; | |
1299 | *linenumber_ptr = next_line->line; | |
b34976b6 | 1300 | return TRUE; |
1ee24f27 DJ |
1301 | } |
1302 | ||
b34976b6 | 1303 | return FALSE; |
252b5132 | 1304 | } |
98591c73 | 1305 | |
a13afe8e FF |
1306 | /* Read in the .debug_ranges section for future reference */ |
1307 | ||
1308 | static bfd_boolean | |
1309 | read_debug_ranges (struct comp_unit *unit) | |
1310 | { | |
1311 | struct dwarf2_debug *stash = unit->stash; | |
1312 | if (! stash->dwarf_ranges_buffer) | |
1313 | { | |
1314 | bfd *abfd = unit->abfd; | |
1315 | asection *msec; | |
1316 | ||
1317 | msec = bfd_get_section_by_name (abfd, ".debug_ranges"); | |
1318 | if (! msec) | |
1319 | { | |
1320 | (*_bfd_error_handler) (_("Dwarf Error: Can't find .debug_ranges section.")); | |
1321 | bfd_set_error (bfd_error_bad_value); | |
1322 | return FALSE; | |
1323 | } | |
1324 | ||
1325 | stash->dwarf_ranges_size = msec->size; | |
1326 | stash->dwarf_ranges_buffer | |
1327 | = bfd_simple_get_relocated_section_contents (abfd, msec, NULL, | |
1328 | stash->syms); | |
1329 | if (! stash->dwarf_ranges_buffer) | |
1330 | return FALSE; | |
1331 | } | |
1332 | return TRUE; | |
1333 | } | |
1334 | ||
a092b084 | 1335 | /* Function table functions. */ |
252b5132 | 1336 | |
a13afe8e FF |
1337 | /* If ADDR is within TABLE, set FUNCTIONNAME_PTR, and return TRUE. |
1338 | Note that we need to find the function that has the smallest | |
1339 | range that contains ADDR, to handle inlined functions without | |
1340 | depending upon them being ordered in TABLE by increasing range. */ | |
252b5132 | 1341 | |
b34976b6 | 1342 | static bfd_boolean |
818a27ac AM |
1343 | lookup_address_in_function_table (struct funcinfo *table, |
1344 | bfd_vma addr, | |
1345 | struct funcinfo **function_ptr, | |
1346 | const char **functionname_ptr) | |
252b5132 RH |
1347 | { |
1348 | struct funcinfo* each_func; | |
a13afe8e FF |
1349 | struct funcinfo* best_fit = NULL; |
1350 | struct arange *arange; | |
252b5132 RH |
1351 | |
1352 | for (each_func = table; | |
1353 | each_func; | |
1354 | each_func = each_func->prev_func) | |
1355 | { | |
a13afe8e FF |
1356 | for (arange = &each_func->arange; |
1357 | arange; | |
1358 | arange = arange->next) | |
252b5132 | 1359 | { |
a13afe8e FF |
1360 | if (addr >= arange->low && addr < arange->high) |
1361 | { | |
1362 | if (!best_fit || | |
1363 | ((arange->high - arange->low) < (best_fit->arange.high - best_fit->arange.low))) | |
1364 | best_fit = each_func; | |
1365 | } | |
252b5132 RH |
1366 | } |
1367 | } | |
98591c73 | 1368 | |
a13afe8e FF |
1369 | if (best_fit) |
1370 | { | |
1371 | *functionname_ptr = best_fit->name; | |
1372 | *function_ptr = best_fit; | |
1373 | return TRUE; | |
1374 | } | |
1375 | else | |
1376 | { | |
1377 | return FALSE; | |
1378 | } | |
252b5132 RH |
1379 | } |
1380 | ||
06f22d7e FF |
1381 | static char * |
1382 | find_abstract_instance_name (struct comp_unit *unit, bfd_uint64_t die_ref) | |
1383 | { | |
1384 | bfd *abfd = unit->abfd; | |
f075ee0c | 1385 | bfd_byte *info_ptr; |
06f22d7e FF |
1386 | unsigned int abbrev_number, bytes_read, i; |
1387 | struct abbrev_info *abbrev; | |
1388 | struct attribute attr; | |
1389 | char *name = 0; | |
1390 | ||
c0c28ab8 | 1391 | info_ptr = unit->info_ptr_unit + die_ref; |
06f22d7e FF |
1392 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
1393 | info_ptr += bytes_read; | |
1394 | ||
1395 | if (abbrev_number) | |
1396 | { | |
1397 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); | |
1398 | if (! abbrev) | |
1399 | { | |
1400 | (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."), | |
1401 | abbrev_number); | |
1402 | bfd_set_error (bfd_error_bad_value); | |
1403 | } | |
1404 | else | |
1405 | { | |
1406 | for (i = 0; i < abbrev->num_attrs && !name; ++i) | |
1407 | { | |
1408 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr); | |
26bf4e33 FF |
1409 | switch (attr.name) |
1410 | { | |
1411 | case DW_AT_name: | |
1412 | name = attr.u.str; | |
1413 | break; | |
1414 | case DW_AT_specification: | |
1415 | name = find_abstract_instance_name (unit, attr.u.val); | |
1416 | break; | |
1417 | default: | |
1418 | break; | |
1419 | } | |
06f22d7e FF |
1420 | } |
1421 | } | |
1422 | } | |
1423 | return (name); | |
1424 | } | |
1425 | ||
a13afe8e FF |
1426 | static void |
1427 | read_rangelist (struct comp_unit *unit, struct arange *arange, bfd_uint64_t offset) | |
1428 | { | |
1429 | bfd_byte *ranges_ptr; | |
1430 | bfd_vma base_address = unit->base_address; | |
1431 | ||
1432 | if (! unit->stash->dwarf_ranges_buffer) | |
1433 | { | |
1434 | if (! read_debug_ranges (unit)) | |
1435 | return; | |
1436 | } | |
1437 | ranges_ptr = unit->stash->dwarf_ranges_buffer + offset; | |
1438 | ||
1439 | for (;;) | |
1440 | { | |
1441 | bfd_vma low_pc; | |
1442 | bfd_vma high_pc; | |
1443 | ||
1444 | if (unit->offset_size == 4) | |
1445 | { | |
1446 | low_pc = read_4_bytes (unit->abfd, ranges_ptr); | |
1447 | ranges_ptr += 4; | |
1448 | high_pc = read_4_bytes (unit->abfd, ranges_ptr); | |
1449 | ranges_ptr += 4; | |
1450 | } | |
1451 | else | |
1452 | { | |
1453 | low_pc = read_8_bytes (unit->abfd, ranges_ptr); | |
1454 | ranges_ptr += 8; | |
1455 | high_pc = read_8_bytes (unit->abfd, ranges_ptr); | |
1456 | ranges_ptr += 8; | |
1457 | } | |
1458 | if (low_pc == 0 && high_pc == 0) | |
1459 | break; | |
1460 | if (low_pc == -1UL && high_pc != -1UL) | |
1461 | base_address = high_pc; | |
1462 | else | |
1463 | arange_add (unit->abfd, arange, base_address + low_pc, base_address + high_pc); | |
1464 | } | |
1465 | } | |
1466 | ||
a092b084 | 1467 | /* DWARF2 Compilation unit functions. */ |
252b5132 RH |
1468 | |
1469 | /* Scan over each die in a comp. unit looking for functions to add | |
a092b084 | 1470 | to the function table. */ |
252b5132 | 1471 | |
b34976b6 | 1472 | static bfd_boolean |
818a27ac | 1473 | scan_unit_for_functions (struct comp_unit *unit) |
252b5132 RH |
1474 | { |
1475 | bfd *abfd = unit->abfd; | |
f075ee0c | 1476 | bfd_byte *info_ptr = unit->first_child_die_ptr; |
252b5132 RH |
1477 | int nesting_level = 1; |
1478 | ||
1479 | while (nesting_level) | |
1480 | { | |
1481 | unsigned int abbrev_number, bytes_read, i; | |
1482 | struct abbrev_info *abbrev; | |
1483 | struct attribute attr; | |
1484 | struct funcinfo *func; | |
a13afe8e FF |
1485 | bfd_vma low_pc = 0; |
1486 | bfd_vma high_pc = 0; | |
252b5132 RH |
1487 | |
1488 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
1489 | info_ptr += bytes_read; | |
1490 | ||
1491 | if (! abbrev_number) | |
1492 | { | |
1493 | nesting_level--; | |
1494 | continue; | |
1495 | } | |
98591c73 | 1496 | |
252b5132 RH |
1497 | abbrev = lookup_abbrev (abbrev_number,unit->abbrevs); |
1498 | if (! abbrev) | |
1499 | { | |
f46c2da6 | 1500 | (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."), |
252b5132 RH |
1501 | abbrev_number); |
1502 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1503 | return FALSE; |
252b5132 | 1504 | } |
98591c73 | 1505 | |
06f22d7e FF |
1506 | if (abbrev->tag == DW_TAG_subprogram |
1507 | || abbrev->tag == DW_TAG_inlined_subroutine) | |
252b5132 | 1508 | { |
dc810e39 | 1509 | bfd_size_type amt = sizeof (struct funcinfo); |
818a27ac | 1510 | func = bfd_zalloc (abfd, amt); |
252b5132 RH |
1511 | func->prev_func = unit->function_table; |
1512 | unit->function_table = func; | |
1513 | } | |
1514 | else | |
1515 | func = NULL; | |
98591c73 | 1516 | |
252b5132 RH |
1517 | for (i = 0; i < abbrev->num_attrs; ++i) |
1518 | { | |
1519 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr); | |
98591c73 | 1520 | |
252b5132 RH |
1521 | if (func) |
1522 | { | |
1523 | switch (attr.name) | |
1524 | { | |
06f22d7e FF |
1525 | case DW_AT_abstract_origin: |
1526 | func->name = find_abstract_instance_name (unit, attr.u.val); | |
1527 | break; | |
1528 | ||
252b5132 | 1529 | case DW_AT_name: |
252b5132 RH |
1530 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ |
1531 | if (func->name == NULL) | |
482e2e37 | 1532 | func->name = attr.u.str; |
252b5132 | 1533 | break; |
98591c73 | 1534 | |
252b5132 | 1535 | case DW_AT_MIPS_linkage_name: |
482e2e37 | 1536 | func->name = attr.u.str; |
252b5132 RH |
1537 | break; |
1538 | ||
1539 | case DW_AT_low_pc: | |
a13afe8e | 1540 | low_pc = attr.u.val; |
252b5132 RH |
1541 | break; |
1542 | ||
1543 | case DW_AT_high_pc: | |
a13afe8e FF |
1544 | high_pc = attr.u.val; |
1545 | break; | |
1546 | ||
1547 | case DW_AT_ranges: | |
1548 | read_rangelist (unit, &func->arange, attr.u.val); | |
252b5132 RH |
1549 | break; |
1550 | ||
252b5132 RH |
1551 | default: |
1552 | break; | |
1553 | } | |
1554 | } | |
1555 | } | |
1556 | ||
a13afe8e FF |
1557 | if (func && high_pc != 0) |
1558 | { | |
1559 | arange_add (unit->abfd, &func->arange, low_pc, high_pc); | |
1560 | } | |
1561 | ||
252b5132 RH |
1562 | if (abbrev->has_children) |
1563 | nesting_level++; | |
1564 | } | |
1565 | ||
b34976b6 | 1566 | return TRUE; |
252b5132 RH |
1567 | } |
1568 | ||
5e38c3b8 MM |
1569 | /* Parse a DWARF2 compilation unit starting at INFO_PTR. This |
1570 | includes the compilation unit header that proceeds the DIE's, but | |
5c4491d3 | 1571 | does not include the length field that precedes each compilation |
5e38c3b8 | 1572 | unit header. END_PTR points one past the end of this comp unit. |
d03ba2a1 | 1573 | OFFSET_SIZE is the size of DWARF2 offsets (either 4 or 8 bytes). |
252b5132 RH |
1574 | |
1575 | This routine does not read the whole compilation unit; only enough | |
1576 | to get to the line number information for the compilation unit. */ | |
1577 | ||
1578 | static struct comp_unit * | |
818a27ac AM |
1579 | parse_comp_unit (bfd *abfd, |
1580 | struct dwarf2_debug *stash, | |
1581 | bfd_vma unit_length, | |
f075ee0c | 1582 | bfd_byte *info_ptr_unit, |
818a27ac | 1583 | unsigned int offset_size) |
252b5132 RH |
1584 | { |
1585 | struct comp_unit* unit; | |
f46c2da6 | 1586 | unsigned int version; |
8ce8c090 | 1587 | bfd_uint64_t abbrev_offset = 0; |
f46c2da6 | 1588 | unsigned int addr_size; |
252b5132 | 1589 | struct abbrev_info** abbrevs; |
252b5132 RH |
1590 | unsigned int abbrev_number, bytes_read, i; |
1591 | struct abbrev_info *abbrev; | |
1592 | struct attribute attr; | |
f075ee0c AM |
1593 | bfd_byte *info_ptr = stash->info_ptr; |
1594 | bfd_byte *end_ptr = info_ptr + unit_length; | |
dc810e39 | 1595 | bfd_size_type amt; |
a13afe8e FF |
1596 | bfd_vma low_pc = 0; |
1597 | bfd_vma high_pc = 0; | |
3fde5a36 | 1598 | |
252b5132 RH |
1599 | version = read_2_bytes (abfd, info_ptr); |
1600 | info_ptr += 2; | |
d03ba2a1 JJ |
1601 | BFD_ASSERT (offset_size == 4 || offset_size == 8); |
1602 | if (offset_size == 4) | |
5e38c3b8 | 1603 | abbrev_offset = read_4_bytes (abfd, info_ptr); |
d03ba2a1 | 1604 | else |
5e38c3b8 | 1605 | abbrev_offset = read_8_bytes (abfd, info_ptr); |
d03ba2a1 | 1606 | info_ptr += offset_size; |
252b5132 RH |
1607 | addr_size = read_1_byte (abfd, info_ptr); |
1608 | info_ptr += 1; | |
1609 | ||
1610 | if (version != 2) | |
1611 | { | |
f46c2da6 | 1612 | (*_bfd_error_handler) (_("Dwarf Error: found dwarf version '%u', this reader only handles version 2 information."), version); |
252b5132 RH |
1613 | bfd_set_error (bfd_error_bad_value); |
1614 | return 0; | |
1615 | } | |
1616 | ||
1617 | if (addr_size > sizeof (bfd_vma)) | |
1618 | { | |
1619 | (*_bfd_error_handler) (_("Dwarf Error: found address size '%u', this reader can not handle sizes greater than '%u'."), | |
1620 | addr_size, | |
f46c2da6 | 1621 | (unsigned int) sizeof (bfd_vma)); |
252b5132 RH |
1622 | bfd_set_error (bfd_error_bad_value); |
1623 | return 0; | |
1624 | } | |
1625 | ||
ecb651f0 | 1626 | if (addr_size != 2 && addr_size != 4 && addr_size != 8) |
252b5132 | 1627 | { |
f5a3e38a | 1628 | (*_bfd_error_handler) ("Dwarf Error: found address size '%u', this reader can only handle address sizes '2', '4' and '8'.", addr_size); |
252b5132 RH |
1629 | bfd_set_error (bfd_error_bad_value); |
1630 | return 0; | |
1631 | } | |
1632 | ||
a092b084 | 1633 | /* Read the abbrevs for this compilation unit into a table. */ |
51db3708 | 1634 | abbrevs = read_abbrevs (abfd, abbrev_offset, stash); |
252b5132 RH |
1635 | if (! abbrevs) |
1636 | return 0; | |
1637 | ||
1638 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
1639 | info_ptr += bytes_read; | |
1640 | if (! abbrev_number) | |
1641 | { | |
f46c2da6 | 1642 | (*_bfd_error_handler) (_("Dwarf Error: Bad abbrev number: %u."), |
252b5132 RH |
1643 | abbrev_number); |
1644 | bfd_set_error (bfd_error_bad_value); | |
1645 | return 0; | |
1646 | } | |
1647 | ||
1648 | abbrev = lookup_abbrev (abbrev_number, abbrevs); | |
1649 | if (! abbrev) | |
1650 | { | |
f46c2da6 | 1651 | (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."), |
252b5132 RH |
1652 | abbrev_number); |
1653 | bfd_set_error (bfd_error_bad_value); | |
1654 | return 0; | |
1655 | } | |
98591c73 | 1656 | |
dc810e39 | 1657 | amt = sizeof (struct comp_unit); |
818a27ac | 1658 | unit = bfd_zalloc (abfd, amt); |
252b5132 | 1659 | unit->abfd = abfd; |
98591c73 | 1660 | unit->addr_size = addr_size; |
d03ba2a1 | 1661 | unit->offset_size = offset_size; |
252b5132 RH |
1662 | unit->abbrevs = abbrevs; |
1663 | unit->end_ptr = end_ptr; | |
d03ba2a1 | 1664 | unit->stash = stash; |
c0c28ab8 | 1665 | unit->info_ptr_unit = info_ptr_unit; |
252b5132 RH |
1666 | |
1667 | for (i = 0; i < abbrev->num_attrs; ++i) | |
1668 | { | |
1669 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr); | |
1670 | ||
1671 | /* Store the data if it is of an attribute we want to keep in a | |
1672 | partial symbol table. */ | |
1673 | switch (attr.name) | |
1674 | { | |
1675 | case DW_AT_stmt_list: | |
1676 | unit->stmtlist = 1; | |
482e2e37 | 1677 | unit->line_offset = attr.u.val; |
252b5132 RH |
1678 | break; |
1679 | ||
1680 | case DW_AT_name: | |
482e2e37 | 1681 | unit->name = attr.u.str; |
252b5132 RH |
1682 | break; |
1683 | ||
1684 | case DW_AT_low_pc: | |
a13afe8e FF |
1685 | low_pc = attr.u.val; |
1686 | /* If the compilation unit DIE has a DW_AT_low_pc attribute, | |
1687 | this is the base address to use when reading location | |
1688 | lists or range lists. */ | |
1689 | unit->base_address = low_pc; | |
252b5132 RH |
1690 | break; |
1691 | ||
1692 | case DW_AT_high_pc: | |
a13afe8e FF |
1693 | high_pc = attr.u.val; |
1694 | break; | |
1695 | ||
1696 | case DW_AT_ranges: | |
1697 | read_rangelist (unit, &unit->arange, attr.u.val); | |
252b5132 RH |
1698 | break; |
1699 | ||
1700 | case DW_AT_comp_dir: | |
1701 | { | |
f075ee0c | 1702 | char *comp_dir = attr.u.str; |
252b5132 RH |
1703 | if (comp_dir) |
1704 | { | |
1705 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
1706 | directory, get rid of it. */ | |
818a27ac | 1707 | char *cp = strchr (comp_dir, ':'); |
252b5132 RH |
1708 | |
1709 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
1710 | comp_dir = cp + 1; | |
1711 | } | |
1712 | unit->comp_dir = comp_dir; | |
1713 | break; | |
1714 | } | |
1715 | ||
1716 | default: | |
1717 | break; | |
1718 | } | |
1719 | } | |
a13afe8e FF |
1720 | if (high_pc != 0) |
1721 | { | |
1722 | arange_add (unit->abfd, &unit->arange, low_pc, high_pc); | |
1723 | } | |
252b5132 RH |
1724 | |
1725 | unit->first_child_die_ptr = info_ptr; | |
1726 | return unit; | |
1727 | } | |
1728 | ||
b34976b6 | 1729 | /* Return TRUE if UNIT contains the address given by ADDR. */ |
252b5132 | 1730 | |
b34976b6 | 1731 | static bfd_boolean |
818a27ac | 1732 | comp_unit_contains_address (struct comp_unit *unit, bfd_vma addr) |
252b5132 | 1733 | { |
f623be2b RH |
1734 | struct arange *arange; |
1735 | ||
1736 | if (unit->error) | |
b34976b6 | 1737 | return FALSE; |
f623be2b RH |
1738 | |
1739 | arange = &unit->arange; | |
1740 | do | |
1741 | { | |
1742 | if (addr >= arange->low && addr < arange->high) | |
b34976b6 | 1743 | return TRUE; |
f623be2b RH |
1744 | arange = arange->next; |
1745 | } | |
1746 | while (arange); | |
98591c73 | 1747 | |
b34976b6 | 1748 | return FALSE; |
252b5132 RH |
1749 | } |
1750 | ||
252b5132 RH |
1751 | /* If UNIT contains ADDR, set the output parameters to the values for |
1752 | the line containing ADDR. The output parameters, FILENAME_PTR, | |
1753 | FUNCTIONNAME_PTR, and LINENUMBER_PTR, are pointers to the objects | |
98591c73 | 1754 | to be filled in. |
252b5132 | 1755 | |
ab3acfbe | 1756 | Return TRUE if UNIT contains ADDR, and no errors were encountered; |
b34976b6 | 1757 | FALSE otherwise. */ |
252b5132 | 1758 | |
b34976b6 | 1759 | static bfd_boolean |
818a27ac AM |
1760 | comp_unit_find_nearest_line (struct comp_unit *unit, |
1761 | bfd_vma addr, | |
1762 | const char **filename_ptr, | |
1763 | const char **functionname_ptr, | |
1764 | unsigned int *linenumber_ptr, | |
1765 | struct dwarf2_debug *stash) | |
252b5132 | 1766 | { |
b34976b6 AM |
1767 | bfd_boolean line_p; |
1768 | bfd_boolean func_p; | |
1ee24f27 | 1769 | struct funcinfo *function; |
98591c73 | 1770 | |
252b5132 | 1771 | if (unit->error) |
b34976b6 | 1772 | return FALSE; |
252b5132 RH |
1773 | |
1774 | if (! unit->line_table) | |
1775 | { | |
1776 | if (! unit->stmtlist) | |
1777 | { | |
1778 | unit->error = 1; | |
b34976b6 | 1779 | return FALSE; |
252b5132 | 1780 | } |
98591c73 | 1781 | |
51db3708 | 1782 | unit->line_table = decode_line_info (unit, stash); |
252b5132 RH |
1783 | |
1784 | if (! unit->line_table) | |
1785 | { | |
1786 | unit->error = 1; | |
b34976b6 | 1787 | return FALSE; |
252b5132 | 1788 | } |
98591c73 | 1789 | |
3f5864e1 | 1790 | if (unit->first_child_die_ptr < unit->end_ptr |
e82ce529 | 1791 | && ! scan_unit_for_functions (unit)) |
252b5132 RH |
1792 | { |
1793 | unit->error = 1; | |
b34976b6 | 1794 | return FALSE; |
252b5132 RH |
1795 | } |
1796 | } | |
1797 | ||
1ee24f27 | 1798 | function = NULL; |
e2f6d277 NC |
1799 | func_p = lookup_address_in_function_table (unit->function_table, addr, |
1800 | &function, functionname_ptr); | |
1801 | line_p = lookup_address_in_line_info_table (unit->line_table, addr, | |
1802 | function, filename_ptr, | |
252b5132 | 1803 | linenumber_ptr); |
b34976b6 | 1804 | return line_p || func_p; |
252b5132 RH |
1805 | } |
1806 | ||
e2f6d277 NC |
1807 | /* Locate a section in a BFD containing debugging info. The search starts |
1808 | from the section after AFTER_SEC, or from the first section in the BFD if | |
1809 | AFTER_SEC is NULL. The search works by examining the names of the | |
1810 | sections. There are two permissiable names. The first is .debug_info. | |
1811 | This is the standard DWARF2 name. The second is a prefix .gnu.linkonce.wi. | |
1812 | This is a variation on the .debug_info section which has a checksum | |
1813 | describing the contents appended onto the name. This allows the linker to | |
1814 | identify and discard duplicate debugging sections for different | |
1815 | compilation units. */ | |
a092b084 NC |
1816 | #define DWARF2_DEBUG_INFO ".debug_info" |
1817 | #define GNU_LINKONCE_INFO ".gnu.linkonce.wi." | |
1818 | ||
1819 | static asection * | |
818a27ac | 1820 | find_debug_info (bfd *abfd, asection *after_sec) |
a092b084 NC |
1821 | { |
1822 | asection * msec; | |
1823 | ||
1824 | if (after_sec) | |
1825 | msec = after_sec->next; | |
1826 | else | |
1827 | msec = abfd->sections; | |
1828 | ||
1829 | while (msec) | |
1830 | { | |
1831 | if (strcmp (msec->name, DWARF2_DEBUG_INFO) == 0) | |
1832 | return msec; | |
1833 | ||
1834 | if (strncmp (msec->name, GNU_LINKONCE_INFO, strlen (GNU_LINKONCE_INFO)) == 0) | |
1835 | return msec; | |
1836 | ||
1837 | msec = msec->next; | |
1838 | } | |
1839 | ||
1840 | return NULL; | |
1841 | } | |
1842 | ||
cd917290 | 1843 | /* The DWARF2 version of find_nearest_line. Return TRUE if the line |
5e38c3b8 MM |
1844 | is found without error. ADDR_SIZE is the number of bytes in the |
1845 | initial .debug_info length field and in the abbreviation offset. | |
1846 | You may use zero to indicate that the default value should be | |
1847 | used. */ | |
252b5132 | 1848 | |
b34976b6 | 1849 | bfd_boolean |
818a27ac AM |
1850 | _bfd_dwarf2_find_nearest_line (bfd *abfd, |
1851 | asection *section, | |
1852 | asymbol **symbols, | |
1853 | bfd_vma offset, | |
1854 | const char **filename_ptr, | |
1855 | const char **functionname_ptr, | |
1856 | unsigned int *linenumber_ptr, | |
1857 | unsigned int addr_size, | |
1858 | void **pinfo) | |
252b5132 RH |
1859 | { |
1860 | /* Read each compilation unit from the section .debug_info, and check | |
1861 | to see if it contains the address we are searching for. If yes, | |
1862 | lookup the address, and return the line number info. If no, go | |
98591c73 | 1863 | on to the next compilation unit. |
252b5132 RH |
1864 | |
1865 | We keep a list of all the previously read compilation units, and | |
98591c73 | 1866 | a pointer to the next un-read compilation unit. Check the |
a092b084 | 1867 | previously read units before reading more. */ |
1ba54ee0 | 1868 | struct dwarf2_debug *stash; |
252b5132 | 1869 | |
a092b084 | 1870 | /* What address are we looking for? */ |
1ba54ee0 | 1871 | bfd_vma addr; |
252b5132 RH |
1872 | |
1873 | struct comp_unit* each; | |
98591c73 | 1874 | |
1ba54ee0 AM |
1875 | stash = *pinfo; |
1876 | addr = offset; | |
1877 | if (section->output_section) | |
1878 | addr += section->output_section->vma + section->output_offset; | |
1879 | else | |
1880 | addr += section->vma; | |
252b5132 RH |
1881 | *filename_ptr = NULL; |
1882 | *functionname_ptr = NULL; | |
1883 | *linenumber_ptr = 0; | |
1884 | ||
5e38c3b8 MM |
1885 | /* The DWARF2 spec says that the initial length field, and the |
1886 | offset of the abbreviation table, should both be 4-byte values. | |
1887 | However, some compilers do things differently. */ | |
1888 | if (addr_size == 0) | |
1889 | addr_size = 4; | |
1efe4b10 | 1890 | BFD_ASSERT (addr_size == 4 || addr_size == 8); |
98591c73 | 1891 | |
252b5132 RH |
1892 | if (! stash) |
1893 | { | |
dc810e39 | 1894 | bfd_size_type total_size; |
252b5132 | 1895 | asection *msec; |
dc810e39 | 1896 | bfd_size_type amt = sizeof (struct dwarf2_debug); |
a092b084 | 1897 | |
818a27ac | 1898 | stash = bfd_zalloc (abfd, amt); |
252b5132 | 1899 | if (! stash) |
b34976b6 | 1900 | return FALSE; |
252b5132 | 1901 | |
818a27ac | 1902 | *pinfo = stash; |
3fde5a36 | 1903 | |
a092b084 NC |
1904 | msec = find_debug_info (abfd, NULL); |
1905 | if (! msec) | |
1906 | /* No dwarf2 info. Note that at this point the stash | |
1907 | has been allocated, but contains zeros, this lets | |
1908 | future calls to this function fail quicker. */ | |
b34976b6 | 1909 | return FALSE; |
a092b084 NC |
1910 | |
1911 | /* There can be more than one DWARF2 info section in a BFD these days. | |
e82ce529 | 1912 | Read them all in and produce one large stash. We do this in two |
a092b084 NC |
1913 | passes - in the first pass we just accumulate the section sizes. |
1914 | In the second pass we read in the section's contents. The allows | |
1915 | us to avoid reallocing the data as we add sections to the stash. */ | |
1916 | for (total_size = 0; msec; msec = find_debug_info (abfd, msec)) | |
eea6121a | 1917 | total_size += msec->size; |
98591c73 | 1918 | |
818a27ac | 1919 | stash->info_ptr = bfd_alloc (abfd, total_size); |
a092b084 | 1920 | if (stash->info_ptr == NULL) |
b34976b6 | 1921 | return FALSE; |
252b5132 | 1922 | |
a092b084 NC |
1923 | stash->info_ptr_end = stash->info_ptr; |
1924 | ||
1925 | for (msec = find_debug_info (abfd, NULL); | |
1926 | msec; | |
1927 | msec = find_debug_info (abfd, msec)) | |
252b5132 | 1928 | { |
dc810e39 AM |
1929 | bfd_size_type size; |
1930 | bfd_size_type start; | |
a092b084 | 1931 | |
eea6121a | 1932 | size = msec->size; |
a092b084 NC |
1933 | if (size == 0) |
1934 | continue; | |
1935 | ||
1936 | start = stash->info_ptr_end - stash->info_ptr; | |
1937 | ||
6e84a906 DJ |
1938 | if ((bfd_simple_get_relocated_section_contents |
1939 | (abfd, msec, stash->info_ptr + start, symbols)) == NULL) | |
a092b084 NC |
1940 | continue; |
1941 | ||
1942 | stash->info_ptr_end = stash->info_ptr + start + size; | |
252b5132 RH |
1943 | } |
1944 | ||
f2363ce5 AO |
1945 | BFD_ASSERT (stash->info_ptr_end == stash->info_ptr + total_size); |
1946 | ||
1947 | stash->sec = find_debug_info (abfd, NULL); | |
1948 | stash->sec_info_ptr = stash->info_ptr; | |
1949 | stash->syms = symbols; | |
252b5132 | 1950 | } |
a092b084 | 1951 | |
98591c73 | 1952 | /* A null info_ptr indicates that there is no dwarf2 info |
a092b084 | 1953 | (or that an error occured while setting up the stash). */ |
252b5132 | 1954 | if (! stash->info_ptr) |
b34976b6 | 1955 | return FALSE; |
252b5132 | 1956 | |
a092b084 | 1957 | /* Check the previously read comp. units first. */ |
252b5132 | 1958 | for (each = stash->all_comp_units; each; each = each->next_unit) |
f623be2b | 1959 | if (comp_unit_contains_address (each, addr)) |
98591c73 | 1960 | return comp_unit_find_nearest_line (each, addr, filename_ptr, |
51db3708 NC |
1961 | functionname_ptr, linenumber_ptr, |
1962 | stash); | |
252b5132 | 1963 | |
a092b084 | 1964 | /* Read each remaining comp. units checking each as they are read. */ |
252b5132 RH |
1965 | while (stash->info_ptr < stash->info_ptr_end) |
1966 | { | |
5e38c3b8 | 1967 | bfd_vma length; |
b34976b6 | 1968 | bfd_boolean found; |
d03ba2a1 | 1969 | unsigned int offset_size = addr_size; |
f075ee0c | 1970 | bfd_byte *info_ptr_unit = stash->info_ptr; |
252b5132 | 1971 | |
a3805e4e AO |
1972 | length = read_4_bytes (abfd, stash->info_ptr); |
1973 | /* A 0xffffff length is the DWARF3 way of indicating we use | |
1974 | 64-bit offsets, instead of 32-bit offsets. */ | |
1975 | if (length == 0xffffffff) | |
d03ba2a1 | 1976 | { |
a3805e4e AO |
1977 | offset_size = 8; |
1978 | length = read_8_bytes (abfd, stash->info_ptr + 4); | |
1979 | stash->info_ptr += 12; | |
1980 | } | |
1981 | /* A zero length is the IRIX way of indicating 64-bit offsets, | |
1982 | mostly because the 64-bit length will generally fit in 32 | |
1983 | bits, and the endianness helps. */ | |
1984 | else if (length == 0) | |
1985 | { | |
1986 | offset_size = 8; | |
1987 | length = read_4_bytes (abfd, stash->info_ptr + 4); | |
1988 | stash->info_ptr += 8; | |
1989 | } | |
1990 | /* In the absence of the hints above, we assume addr_size-sized | |
1991 | offsets, for backward-compatibility with pre-DWARF3 64-bit | |
1992 | platforms. */ | |
1993 | else if (addr_size == 8) | |
1994 | { | |
1995 | length = read_8_bytes (abfd, stash->info_ptr); | |
060dc71d | 1996 | stash->info_ptr += 8; |
d03ba2a1 | 1997 | } |
5e38c3b8 | 1998 | else |
a3805e4e | 1999 | stash->info_ptr += 4; |
252b5132 RH |
2000 | |
2001 | if (length > 0) | |
e82ce529 | 2002 | { |
c0c28ab8 L |
2003 | each = parse_comp_unit (abfd, stash, length, info_ptr_unit, |
2004 | offset_size); | |
252b5132 RH |
2005 | stash->info_ptr += length; |
2006 | ||
f2363ce5 | 2007 | if ((bfd_vma) (stash->info_ptr - stash->sec_info_ptr) |
eea6121a | 2008 | == stash->sec->size) |
f2363ce5 AO |
2009 | { |
2010 | stash->sec = find_debug_info (abfd, stash->sec); | |
2011 | stash->sec_info_ptr = stash->info_ptr; | |
2012 | } | |
2013 | ||
252b5132 RH |
2014 | if (each) |
2015 | { | |
2016 | each->next_unit = stash->all_comp_units; | |
2017 | stash->all_comp_units = each; | |
2018 | ||
159002ff RH |
2019 | /* DW_AT_low_pc and DW_AT_high_pc are optional for |
2020 | compilation units. If we don't have them (i.e., | |
2021 | unit->high == 0), we need to consult the line info | |
2022 | table to see if a compilation unit contains the given | |
a092b084 | 2023 | address. */ |
f623be2b | 2024 | if (each->arange.high > 0) |
159002ff RH |
2025 | { |
2026 | if (comp_unit_contains_address (each, addr)) | |
2027 | return comp_unit_find_nearest_line (each, addr, | |
6e84a906 DJ |
2028 | filename_ptr, |
2029 | functionname_ptr, | |
2030 | linenumber_ptr, | |
2031 | stash); | |
159002ff RH |
2032 | } |
2033 | else | |
2034 | { | |
2035 | found = comp_unit_find_nearest_line (each, addr, | |
2036 | filename_ptr, | |
2037 | functionname_ptr, | |
51db3708 NC |
2038 | linenumber_ptr, |
2039 | stash); | |
159002ff | 2040 | if (found) |
b34976b6 | 2041 | return TRUE; |
159002ff | 2042 | } |
252b5132 RH |
2043 | } |
2044 | } | |
2045 | } | |
2046 | ||
b34976b6 | 2047 | return FALSE; |
252b5132 | 2048 | } |
35330cce NC |
2049 | |
2050 | void | |
2051 | _bfd_dwarf2_cleanup_debug_info (bfd *abfd) | |
2052 | { | |
2053 | struct comp_unit *each; | |
2054 | struct dwarf2_debug *stash; | |
2055 | ||
2056 | if (abfd == NULL || elf_tdata (abfd) == NULL) | |
2057 | return; | |
2058 | ||
2059 | stash = elf_tdata (abfd)->dwarf2_find_line_info; | |
2060 | ||
2061 | if (stash == NULL) | |
2062 | return; | |
2063 | ||
2064 | for (each = stash->all_comp_units; each; each = each->next_unit) | |
2065 | { | |
2066 | struct abbrev_info **abbrevs = each->abbrevs; | |
2067 | size_t i; | |
2068 | ||
2069 | for (i = 0; i < ABBREV_HASH_SIZE; i++) | |
2070 | { | |
2071 | struct abbrev_info *abbrev = abbrevs[i]; | |
2072 | ||
2073 | while (abbrev) | |
2074 | { | |
2075 | free (abbrev->attrs); | |
2076 | abbrev = abbrev->next; | |
2077 | } | |
2078 | } | |
2079 | ||
2080 | if (each->line_table) | |
2081 | { | |
2082 | free (each->line_table->dirs); | |
2083 | free (each->line_table->files); | |
2084 | } | |
2085 | } | |
2086 | ||
2087 | free (stash->dwarf_abbrev_buffer); | |
2088 | free (stash->dwarf_line_buffer); | |
2089 | free (stash->dwarf_ranges_buffer); | |
2090 | } |