Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* DWARF 2 support. |
818a27ac | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
709d67f1 | 3 | 2004, 2005, 2006, 2007, 2008 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 | |
cd123cb7 | 20 | the Free Software Foundation; either version 3 of the License, or (at |
e2f6d277 | 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 | |
cd123cb7 NC |
30 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
31 | MA 02110-1301, USA. */ | |
252b5132 | 32 | |
252b5132 | 33 | #include "sysdep.h" |
3db64b00 | 34 | #include "bfd.h" |
252b5132 RH |
35 | #include "libiberty.h" |
36 | #include "libbfd.h" | |
37 | #include "elf-bfd.h" | |
38 | #include "elf/dwarf2.h" | |
39 | ||
40 | /* The data in the .debug_line statement prologue looks like this. */ | |
a092b084 | 41 | |
252b5132 | 42 | struct line_head |
a092b084 | 43 | { |
d03ba2a1 | 44 | bfd_vma total_length; |
a092b084 | 45 | unsigned short version; |
f46c2da6 | 46 | bfd_vma prologue_length; |
a092b084 NC |
47 | unsigned char minimum_instruction_length; |
48 | unsigned char default_is_stmt; | |
49 | int line_base; | |
50 | unsigned char line_range; | |
51 | unsigned char opcode_base; | |
52 | unsigned char *standard_opcode_lengths; | |
53 | }; | |
54 | ||
55 | /* Attributes have a name and a value. */ | |
56 | ||
252b5132 | 57 | struct attribute |
a092b084 NC |
58 | { |
59 | enum dwarf_attribute name; | |
60 | enum dwarf_form form; | |
61 | union | |
252b5132 | 62 | { |
a092b084 NC |
63 | char *str; |
64 | struct dwarf_block *blk; | |
8ce8c090 AM |
65 | bfd_uint64_t val; |
66 | bfd_int64_t sval; | |
a092b084 NC |
67 | } |
68 | u; | |
69 | }; | |
70 | ||
98591c73 | 71 | /* Blocks are a bunch of untyped bytes. */ |
252b5132 | 72 | struct dwarf_block |
a092b084 NC |
73 | { |
74 | unsigned int size; | |
f075ee0c | 75 | bfd_byte *data; |
a092b084 | 76 | }; |
252b5132 | 77 | |
d4c32a81 L |
78 | struct loadable_section |
79 | { | |
80 | asection *section; | |
81 | bfd_vma adj_vma; | |
82 | }; | |
83 | ||
a092b084 NC |
84 | struct dwarf2_debug |
85 | { | |
86 | /* A list of all previously read comp_units. */ | |
f075ee0c | 87 | struct comp_unit *all_comp_units; |
252b5132 | 88 | |
bd210d54 NC |
89 | /* Last comp unit in list above. */ |
90 | struct comp_unit *last_comp_unit; | |
91 | ||
252b5132 RH |
92 | /* The next unread compilation unit within the .debug_info section. |
93 | Zero indicates that the .debug_info section has not been loaded | |
a092b084 | 94 | into a buffer yet. */ |
f075ee0c | 95 | bfd_byte *info_ptr; |
252b5132 | 96 | |
a092b084 | 97 | /* Pointer to the end of the .debug_info section memory buffer. */ |
f075ee0c | 98 | bfd_byte *info_ptr_end; |
252b5132 | 99 | |
0d161102 NC |
100 | /* Pointer to the bfd, section and address of the beginning of the |
101 | section. The bfd might be different than expected because of | |
102 | gnu_debuglink sections. */ | |
103 | bfd * bfd; | |
f075ee0c AM |
104 | asection *sec; |
105 | bfd_byte *sec_info_ptr; | |
f2363ce5 AO |
106 | |
107 | /* Pointer to the symbol table. */ | |
f075ee0c | 108 | asymbol **syms; |
f2363ce5 | 109 | |
a092b084 | 110 | /* Pointer to the .debug_abbrev section loaded into memory. */ |
f075ee0c | 111 | bfd_byte *dwarf_abbrev_buffer; |
252b5132 | 112 | |
a092b084 | 113 | /* Length of the loaded .debug_abbrev section. */ |
252b5132 | 114 | unsigned long dwarf_abbrev_size; |
69dd2e2d RH |
115 | |
116 | /* Buffer for decode_line_info. */ | |
f075ee0c | 117 | bfd_byte *dwarf_line_buffer; |
ccdb16fc JW |
118 | |
119 | /* Length of the loaded .debug_line section. */ | |
120 | unsigned long dwarf_line_size; | |
d03ba2a1 JJ |
121 | |
122 | /* Pointer to the .debug_str section loaded into memory. */ | |
f075ee0c | 123 | bfd_byte *dwarf_str_buffer; |
d03ba2a1 JJ |
124 | |
125 | /* Length of the loaded .debug_str section. */ | |
126 | unsigned long dwarf_str_size; | |
a13afe8e FF |
127 | |
128 | /* Pointer to the .debug_ranges section loaded into memory. */ | |
129 | bfd_byte *dwarf_ranges_buffer; | |
130 | ||
131 | /* Length of the loaded .debug_ranges section. */ | |
132 | unsigned long dwarf_ranges_size; | |
4ab527b0 FF |
133 | |
134 | /* If the most recent call to bfd_find_nearest_line was given an | |
135 | address in an inlined function, preserve a pointer into the | |
136 | calling chain for subsequent calls to bfd_find_inliner_info to | |
137 | use. */ | |
138 | struct funcinfo *inliner_chain; | |
d4c32a81 L |
139 | |
140 | /* Number of loadable sections. */ | |
141 | unsigned int loadable_section_count; | |
142 | ||
143 | /* Array of loadable sections. */ | |
144 | struct loadable_section *loadable_sections; | |
bd210d54 NC |
145 | |
146 | /* Number of times find_line is called. This is used in | |
147 | the heuristic for enabling the info hash tables. */ | |
148 | int info_hash_count; | |
149 | ||
150 | #define STASH_INFO_HASH_TRIGGER 100 | |
151 | ||
152 | /* Hash table mapping symbol names to function infos. */ | |
153 | struct info_hash_table *funcinfo_hash_table; | |
154 | ||
155 | /* Hash table mapping symbol names to variable infos. */ | |
156 | struct info_hash_table *varinfo_hash_table; | |
157 | ||
158 | /* Head of comp_unit list in the last hash table update. */ | |
159 | struct comp_unit *hash_units_head; | |
160 | ||
161 | /* Status of info hash. */ | |
162 | int info_hash_status; | |
163 | #define STASH_INFO_HASH_OFF 0 | |
164 | #define STASH_INFO_HASH_ON 1 | |
165 | #define STASH_INFO_HASH_DISABLED 2 | |
252b5132 RH |
166 | }; |
167 | ||
a092b084 NC |
168 | struct arange |
169 | { | |
f623be2b RH |
170 | struct arange *next; |
171 | bfd_vma low; | |
172 | bfd_vma high; | |
173 | }; | |
252b5132 | 174 | |
252b5132 | 175 | /* A minimal decoding of DWARF2 compilation units. We only decode |
a092b084 | 176 | what's needed to get to the line number information. */ |
252b5132 | 177 | |
a092b084 NC |
178 | struct comp_unit |
179 | { | |
180 | /* Chain the previously read compilation units. */ | |
f075ee0c | 181 | struct comp_unit *next_unit; |
252b5132 | 182 | |
bd210d54 NC |
183 | /* Likewise, chain the compilation unit read after this one. |
184 | The comp units are stored in reversed reading order. */ | |
185 | struct comp_unit *prev_unit; | |
186 | ||
2ae727ad | 187 | /* Keep the bfd convenient (for memory allocation). */ |
f075ee0c | 188 | bfd *abfd; |
252b5132 | 189 | |
709d67f1 AM |
190 | /* The lowest and highest addresses contained in this compilation |
191 | unit as specified in the compilation unit header. */ | |
192 | struct arange arange; | |
252b5132 | 193 | |
a092b084 | 194 | /* The DW_AT_name attribute (for error messages). */ |
f075ee0c | 195 | char *name; |
252b5132 | 196 | |
a092b084 | 197 | /* The abbrev hash table. */ |
f075ee0c | 198 | struct abbrev_info **abbrevs; |
252b5132 | 199 | |
a092b084 | 200 | /* Note that an error was found by comp_unit_find_nearest_line. */ |
252b5132 RH |
201 | int error; |
202 | ||
a092b084 | 203 | /* The DW_AT_comp_dir attribute. */ |
f075ee0c | 204 | char *comp_dir; |
252b5132 | 205 | |
b34976b6 | 206 | /* TRUE if there is a line number table associated with this comp. unit. */ |
252b5132 | 207 | int stmtlist; |
98591c73 | 208 | |
c0c28ab8 L |
209 | /* Pointer to the current comp_unit so that we can find a given entry |
210 | by its reference. */ | |
f075ee0c | 211 | bfd_byte *info_ptr_unit; |
c0c28ab8 | 212 | |
a092b084 | 213 | /* The offset into .debug_line of the line number table. */ |
252b5132 RH |
214 | unsigned long line_offset; |
215 | ||
a092b084 | 216 | /* Pointer to the first child die for the comp unit. */ |
f075ee0c | 217 | bfd_byte *first_child_die_ptr; |
252b5132 | 218 | |
a092b084 | 219 | /* The end of the comp unit. */ |
f075ee0c | 220 | bfd_byte *end_ptr; |
252b5132 | 221 | |
a092b084 | 222 | /* The decoded line number, NULL if not yet decoded. */ |
f075ee0c | 223 | struct line_info_table *line_table; |
252b5132 | 224 | |
a092b084 | 225 | /* A list of the functions found in this comp. unit. */ |
f075ee0c | 226 | struct funcinfo *function_table; |
252b5132 | 227 | |
5420f73d L |
228 | /* A list of the variables found in this comp. unit. */ |
229 | struct varinfo *variable_table; | |
230 | ||
d03ba2a1 JJ |
231 | /* Pointer to dwarf2_debug structure. */ |
232 | struct dwarf2_debug *stash; | |
233 | ||
a092b084 | 234 | /* Address size for this unit - from unit header. */ |
252b5132 | 235 | unsigned char addr_size; |
d03ba2a1 JJ |
236 | |
237 | /* Offset size for this unit - from unit header. */ | |
238 | unsigned char offset_size; | |
a13afe8e FF |
239 | |
240 | /* Base address for this unit - from DW_AT_low_pc attribute of | |
241 | DW_TAG_compile_unit DIE */ | |
242 | bfd_vma base_address; | |
bd210d54 NC |
243 | |
244 | /* TRUE if symbols are cached in hash table for faster lookup by name. */ | |
245 | bfd_boolean cached; | |
252b5132 RH |
246 | }; |
247 | ||
a7b97311 AM |
248 | /* This data structure holds the information of an abbrev. */ |
249 | struct abbrev_info | |
250 | { | |
251 | unsigned int number; /* Number identifying abbrev. */ | |
252 | enum dwarf_tag tag; /* DWARF tag. */ | |
253 | int has_children; /* Boolean. */ | |
254 | unsigned int num_attrs; /* Number of attributes. */ | |
255 | struct attr_abbrev *attrs; /* An array of attribute descriptions. */ | |
256 | struct abbrev_info *next; /* Next in chain. */ | |
257 | }; | |
258 | ||
259 | struct attr_abbrev | |
260 | { | |
261 | enum dwarf_attribute name; | |
262 | enum dwarf_form form; | |
263 | }; | |
264 | ||
265 | #ifndef ABBREV_HASH_SIZE | |
266 | #define ABBREV_HASH_SIZE 121 | |
267 | #endif | |
268 | #ifndef ATTR_ALLOC_CHUNK | |
269 | #define ATTR_ALLOC_CHUNK 4 | |
270 | #endif | |
271 | ||
bd210d54 NC |
272 | /* Variable and function hash tables. This is used to speed up look-up |
273 | in lookup_symbol_in_var_table() and lookup_symbol_in_function_table(). | |
274 | In order to share code between variable and function infos, we use | |
275 | a list of untyped pointer for all variable/function info associated with | |
276 | a symbol. We waste a bit of memory for list with one node but that | |
277 | simplifies the code. */ | |
278 | ||
279 | struct info_list_node | |
280 | { | |
281 | struct info_list_node *next; | |
282 | void *info; | |
283 | }; | |
284 | ||
285 | /* Info hash entry. */ | |
286 | struct info_hash_entry | |
287 | { | |
288 | struct bfd_hash_entry root; | |
289 | struct info_list_node *head; | |
290 | }; | |
291 | ||
292 | struct info_hash_table | |
293 | { | |
294 | struct bfd_hash_table base; | |
295 | }; | |
296 | ||
297 | /* Function to create a new entry in info hash table. */ | |
298 | ||
299 | static struct bfd_hash_entry * | |
300 | info_hash_table_newfunc (struct bfd_hash_entry *entry, | |
301 | struct bfd_hash_table *table, | |
302 | const char *string) | |
303 | { | |
304 | struct info_hash_entry *ret = (struct info_hash_entry *) entry; | |
305 | ||
306 | /* Allocate the structure if it has not already been allocated by a | |
307 | derived class. */ | |
308 | if (ret == NULL) | |
309 | { | |
310 | ret = bfd_hash_allocate (table, sizeof (* ret)); | |
311 | if (ret == NULL) | |
312 | return NULL; | |
313 | } | |
314 | ||
315 | /* Call the allocation method of the base class. */ | |
316 | ret = ((struct info_hash_entry *) | |
317 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
318 | ||
319 | /* Initialize the local fields here. */ | |
320 | if (ret) | |
321 | ret->head = NULL; | |
322 | ||
323 | return (struct bfd_hash_entry *) ret; | |
324 | } | |
325 | ||
326 | /* Function to create a new info hash table. It returns a pointer to the | |
327 | newly created table or NULL if there is any error. We need abfd | |
328 | solely for memory allocation. */ | |
329 | ||
330 | static struct info_hash_table * | |
331 | create_info_hash_table (bfd *abfd) | |
332 | { | |
333 | struct info_hash_table *hash_table; | |
334 | ||
335 | hash_table = bfd_alloc (abfd, sizeof (struct info_hash_table)); | |
336 | if (!hash_table) | |
337 | return hash_table; | |
338 | ||
339 | if (!bfd_hash_table_init (&hash_table->base, info_hash_table_newfunc, | |
340 | sizeof (struct info_hash_entry))) | |
341 | { | |
342 | bfd_release (abfd, hash_table); | |
343 | return NULL; | |
344 | } | |
345 | ||
346 | return hash_table; | |
347 | } | |
348 | ||
349 | /* Insert an info entry into an info hash table. We do not check of | |
350 | duplicate entries. Also, the caller need to guarantee that the | |
351 | right type of info in inserted as info is passed as a void* pointer. | |
352 | This function returns true if there is no error. */ | |
353 | ||
354 | static bfd_boolean | |
355 | insert_info_hash_table (struct info_hash_table *hash_table, | |
356 | const char *key, | |
357 | void *info, | |
358 | bfd_boolean copy_p) | |
359 | { | |
360 | struct info_hash_entry *entry; | |
361 | struct info_list_node *node; | |
362 | ||
363 | entry = (struct info_hash_entry*) bfd_hash_lookup (&hash_table->base, | |
364 | key, TRUE, copy_p); | |
365 | if (!entry) | |
366 | return FALSE; | |
367 | ||
368 | node = bfd_hash_allocate (&hash_table->base, sizeof (*node)); | |
369 | if (!node) | |
370 | return FALSE; | |
371 | ||
372 | node->info = info; | |
373 | node->next = entry->head; | |
374 | entry->head = node; | |
375 | ||
376 | return TRUE; | |
377 | } | |
378 | ||
379 | /* Look up an info entry list from an info hash table. Return NULL | |
380 | if there is none. */ | |
381 | ||
382 | static struct info_list_node * | |
383 | lookup_info_hash_table (struct info_hash_table *hash_table, const char *key) | |
384 | { | |
385 | struct info_hash_entry *entry; | |
386 | ||
387 | entry = (struct info_hash_entry*) bfd_hash_lookup (&hash_table->base, key, | |
388 | FALSE, FALSE); | |
389 | return entry ? entry->head : NULL; | |
390 | } | |
391 | ||
98591c73 KH |
392 | /* VERBATIM |
393 | The following function up to the END VERBATIM mark are | |
a092b084 | 394 | copied directly from dwarf2read.c. */ |
252b5132 | 395 | |
a092b084 | 396 | /* Read dwarf information from a buffer. */ |
252b5132 RH |
397 | |
398 | static unsigned int | |
f075ee0c | 399 | read_1_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf) |
252b5132 | 400 | { |
818a27ac | 401 | return bfd_get_8 (abfd, buf); |
252b5132 RH |
402 | } |
403 | ||
404 | static int | |
f075ee0c | 405 | read_1_signed_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf) |
252b5132 | 406 | { |
818a27ac | 407 | return bfd_get_signed_8 (abfd, buf); |
252b5132 RH |
408 | } |
409 | ||
410 | static unsigned int | |
f075ee0c | 411 | read_2_bytes (bfd *abfd, bfd_byte *buf) |
252b5132 | 412 | { |
818a27ac | 413 | return bfd_get_16 (abfd, buf); |
252b5132 RH |
414 | } |
415 | ||
252b5132 | 416 | static unsigned int |
f075ee0c | 417 | read_4_bytes (bfd *abfd, bfd_byte *buf) |
252b5132 | 418 | { |
818a27ac | 419 | return bfd_get_32 (abfd, buf); |
252b5132 RH |
420 | } |
421 | ||
8ce8c090 | 422 | static bfd_uint64_t |
f075ee0c | 423 | read_8_bytes (bfd *abfd, bfd_byte *buf) |
252b5132 | 424 | { |
818a27ac | 425 | return bfd_get_64 (abfd, buf); |
252b5132 RH |
426 | } |
427 | ||
f075ee0c | 428 | static bfd_byte * |
818a27ac | 429 | read_n_bytes (bfd *abfd ATTRIBUTE_UNUSED, |
f075ee0c | 430 | bfd_byte *buf, |
818a27ac | 431 | unsigned int size ATTRIBUTE_UNUSED) |
252b5132 RH |
432 | { |
433 | /* If the size of a host char is 8 bits, we can return a pointer | |
434 | to the buffer, otherwise we have to copy the data to a buffer | |
435 | allocated on the temporary obstack. */ | |
436 | return buf; | |
437 | } | |
438 | ||
439 | static char * | |
818a27ac | 440 | read_string (bfd *abfd ATTRIBUTE_UNUSED, |
f075ee0c | 441 | bfd_byte *buf, |
818a27ac | 442 | unsigned int *bytes_read_ptr) |
252b5132 | 443 | { |
d03ba2a1 | 444 | /* Return a pointer to the embedded string. */ |
f075ee0c AM |
445 | char *str = (char *) buf; |
446 | if (*str == '\0') | |
252b5132 RH |
447 | { |
448 | *bytes_read_ptr = 1; | |
449 | return NULL; | |
450 | } | |
98591c73 | 451 | |
f075ee0c AM |
452 | *bytes_read_ptr = strlen (str) + 1; |
453 | return str; | |
252b5132 RH |
454 | } |
455 | ||
d03ba2a1 | 456 | static char * |
818a27ac | 457 | read_indirect_string (struct comp_unit* unit, |
f075ee0c | 458 | bfd_byte *buf, |
818a27ac | 459 | unsigned int *bytes_read_ptr) |
d03ba2a1 | 460 | { |
8ce8c090 | 461 | bfd_uint64_t offset; |
d03ba2a1 | 462 | struct dwarf2_debug *stash = unit->stash; |
f075ee0c | 463 | char *str; |
d03ba2a1 JJ |
464 | |
465 | if (unit->offset_size == 4) | |
466 | offset = read_4_bytes (unit->abfd, buf); | |
467 | else | |
468 | offset = read_8_bytes (unit->abfd, buf); | |
469 | *bytes_read_ptr = unit->offset_size; | |
470 | ||
471 | if (! stash->dwarf_str_buffer) | |
472 | { | |
473 | asection *msec; | |
474 | bfd *abfd = unit->abfd; | |
eea6121a | 475 | bfd_size_type sz; |
d03ba2a1 JJ |
476 | |
477 | msec = bfd_get_section_by_name (abfd, ".debug_str"); | |
478 | if (! msec) | |
479 | { | |
480 | (*_bfd_error_handler) | |
481 | (_("Dwarf Error: Can't find .debug_str section.")); | |
482 | bfd_set_error (bfd_error_bad_value); | |
483 | return NULL; | |
484 | } | |
485 | ||
eea6121a AM |
486 | sz = msec->rawsize ? msec->rawsize : msec->size; |
487 | stash->dwarf_str_size = sz; | |
488 | stash->dwarf_str_buffer = bfd_alloc (abfd, sz); | |
36868d45 | 489 | if (! stash->dwarf_str_buffer) |
d03ba2a1 JJ |
490 | return NULL; |
491 | ||
9f632188 | 492 | if (! bfd_get_section_contents (abfd, msec, stash->dwarf_str_buffer, |
eea6121a | 493 | 0, sz)) |
d03ba2a1 JJ |
494 | return NULL; |
495 | } | |
496 | ||
497 | if (offset >= stash->dwarf_str_size) | |
498 | { | |
f46c2da6 AM |
499 | (*_bfd_error_handler) (_("Dwarf Error: DW_FORM_strp offset (%lu) greater than or equal to .debug_str size (%lu)."), |
500 | (unsigned long) offset, stash->dwarf_str_size); | |
d03ba2a1 JJ |
501 | bfd_set_error (bfd_error_bad_value); |
502 | return NULL; | |
503 | } | |
504 | ||
f075ee0c AM |
505 | str = (char *) stash->dwarf_str_buffer + offset; |
506 | if (*str == '\0') | |
d03ba2a1 | 507 | return NULL; |
f075ee0c | 508 | return str; |
d03ba2a1 JJ |
509 | } |
510 | ||
252b5132 RH |
511 | /* END VERBATIM */ |
512 | ||
8ce8c090 | 513 | static bfd_uint64_t |
f075ee0c | 514 | read_address (struct comp_unit *unit, bfd_byte *buf) |
252b5132 | 515 | { |
0af4cd7c PK |
516 | int signed_vma = get_elf_backend_data (unit->abfd)->sign_extend_vma; |
517 | ||
518 | if (signed_vma) | |
519 | { | |
520 | switch (unit->addr_size) | |
521 | { | |
522 | case 8: | |
523 | return bfd_get_signed_64 (unit->abfd, buf); | |
524 | case 4: | |
525 | return bfd_get_signed_32 (unit->abfd, buf); | |
526 | case 2: | |
527 | return bfd_get_signed_16 (unit->abfd, buf); | |
528 | default: | |
529 | abort (); | |
530 | } | |
531 | } | |
532 | else | |
252b5132 | 533 | { |
0af4cd7c PK |
534 | switch (unit->addr_size) |
535 | { | |
536 | case 8: | |
537 | return bfd_get_64 (unit->abfd, buf); | |
538 | case 4: | |
539 | return bfd_get_32 (unit->abfd, buf); | |
540 | case 2: | |
541 | return bfd_get_16 (unit->abfd, buf); | |
542 | default: | |
543 | abort (); | |
544 | } | |
252b5132 | 545 | } |
252b5132 RH |
546 | } |
547 | ||
252b5132 RH |
548 | /* Lookup an abbrev_info structure in the abbrev hash table. */ |
549 | ||
550 | static struct abbrev_info * | |
818a27ac | 551 | lookup_abbrev (unsigned int number, struct abbrev_info **abbrevs) |
252b5132 RH |
552 | { |
553 | unsigned int hash_number; | |
554 | struct abbrev_info *abbrev; | |
555 | ||
556 | hash_number = number % ABBREV_HASH_SIZE; | |
557 | abbrev = abbrevs[hash_number]; | |
558 | ||
559 | while (abbrev) | |
560 | { | |
561 | if (abbrev->number == number) | |
562 | return abbrev; | |
563 | else | |
564 | abbrev = abbrev->next; | |
565 | } | |
98591c73 | 566 | |
252b5132 RH |
567 | return NULL; |
568 | } | |
569 | ||
570 | /* In DWARF version 2, the description of the debugging information is | |
571 | stored in a separate .debug_abbrev section. Before we read any | |
572 | dies from a section we read in all abbreviations and install them | |
573 | in a hash table. */ | |
574 | ||
575 | static struct abbrev_info** | |
8ce8c090 | 576 | read_abbrevs (bfd *abfd, bfd_uint64_t offset, struct dwarf2_debug *stash) |
252b5132 RH |
577 | { |
578 | struct abbrev_info **abbrevs; | |
f075ee0c | 579 | bfd_byte *abbrev_ptr; |
252b5132 RH |
580 | struct abbrev_info *cur_abbrev; |
581 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
582 | unsigned int abbrev_form, hash_number; | |
dc810e39 | 583 | bfd_size_type amt; |
252b5132 RH |
584 | |
585 | if (! stash->dwarf_abbrev_buffer) | |
586 | { | |
587 | asection *msec; | |
588 | ||
589 | msec = bfd_get_section_by_name (abfd, ".debug_abbrev"); | |
590 | if (! msec) | |
591 | { | |
592 | (*_bfd_error_handler) (_("Dwarf Error: Can't find .debug_abbrev section.")); | |
593 | bfd_set_error (bfd_error_bad_value); | |
594 | return 0; | |
595 | } | |
98591c73 | 596 | |
eea6121a | 597 | stash->dwarf_abbrev_size = msec->size; |
6e84a906 DJ |
598 | stash->dwarf_abbrev_buffer |
599 | = bfd_simple_get_relocated_section_contents (abfd, msec, NULL, | |
600 | stash->syms); | |
252b5132 RH |
601 | if (! stash->dwarf_abbrev_buffer) |
602 | return 0; | |
252b5132 RH |
603 | } |
604 | ||
f5198f61 | 605 | if (offset >= stash->dwarf_abbrev_size) |
252b5132 | 606 | { |
f46c2da6 AM |
607 | (*_bfd_error_handler) (_("Dwarf Error: Abbrev offset (%lu) greater than or equal to .debug_abbrev size (%lu)."), |
608 | (unsigned long) offset, stash->dwarf_abbrev_size); | |
252b5132 RH |
609 | bfd_set_error (bfd_error_bad_value); |
610 | return 0; | |
611 | } | |
612 | ||
dc810e39 | 613 | amt = sizeof (struct abbrev_info*) * ABBREV_HASH_SIZE; |
818a27ac | 614 | abbrevs = bfd_zalloc (abfd, amt); |
252b5132 RH |
615 | |
616 | abbrev_ptr = stash->dwarf_abbrev_buffer + offset; | |
617 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
618 | abbrev_ptr += bytes_read; | |
619 | ||
a092b084 | 620 | /* Loop until we reach an abbrev number of 0. */ |
252b5132 RH |
621 | while (abbrev_number) |
622 | { | |
dc810e39 | 623 | amt = sizeof (struct abbrev_info); |
818a27ac | 624 | cur_abbrev = bfd_zalloc (abfd, amt); |
252b5132 | 625 | |
a092b084 | 626 | /* Read in abbrev header. */ |
252b5132 | 627 | cur_abbrev->number = abbrev_number; |
d45913a0 DA |
628 | cur_abbrev->tag = (enum dwarf_tag) |
629 | read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
252b5132 RH |
630 | abbrev_ptr += bytes_read; |
631 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
632 | abbrev_ptr += 1; | |
633 | ||
a092b084 | 634 | /* Now read in declarations. */ |
252b5132 RH |
635 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
636 | abbrev_ptr += bytes_read; | |
637 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
638 | abbrev_ptr += bytes_read; | |
98591c73 | 639 | |
252b5132 RH |
640 | while (abbrev_name) |
641 | { | |
642 | if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0) | |
643 | { | |
35330cce NC |
644 | struct attr_abbrev *tmp; |
645 | ||
dc810e39 AM |
646 | amt = cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK; |
647 | amt *= sizeof (struct attr_abbrev); | |
35330cce NC |
648 | tmp = bfd_realloc (cur_abbrev->attrs, amt); |
649 | if (tmp == NULL) | |
d8d1c398 AM |
650 | { |
651 | size_t i; | |
652 | ||
653 | for (i = 0; i < ABBREV_HASH_SIZE; i++) | |
654 | { | |
655 | struct abbrev_info *abbrev = abbrevs[i]; | |
656 | ||
657 | while (abbrev) | |
658 | { | |
b42bf1e0 NC |
659 | struct abbrev_info * a = abbrev; |
660 | ||
661 | abbrev = a->next; | |
662 | if (a->attrs) | |
663 | free (abbrev->attrs); | |
664 | free (a); | |
d8d1c398 AM |
665 | } |
666 | } | |
b42bf1e0 NC |
667 | |
668 | free (abbrevs); | |
d8d1c398 AM |
669 | return NULL; |
670 | } | |
35330cce | 671 | cur_abbrev->attrs = tmp; |
252b5132 | 672 | } |
98591c73 | 673 | |
d45913a0 DA |
674 | cur_abbrev->attrs[cur_abbrev->num_attrs].name |
675 | = (enum dwarf_attribute) abbrev_name; | |
676 | cur_abbrev->attrs[cur_abbrev->num_attrs++].form | |
677 | = (enum dwarf_form) abbrev_form; | |
252b5132 RH |
678 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
679 | abbrev_ptr += bytes_read; | |
680 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
681 | abbrev_ptr += bytes_read; | |
682 | } | |
683 | ||
684 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
685 | cur_abbrev->next = abbrevs[hash_number]; | |
686 | abbrevs[hash_number] = cur_abbrev; | |
687 | ||
688 | /* Get next abbreviation. | |
e82ce529 | 689 | Under Irix6 the abbreviations for a compilation unit are not |
252b5132 RH |
690 | always properly terminated with an abbrev number of 0. |
691 | Exit loop if we encounter an abbreviation which we have | |
692 | already read (which means we are about to read the abbreviations | |
693 | for the next compile unit) or if the end of the abbreviation | |
694 | table is reached. */ | |
695 | if ((unsigned int) (abbrev_ptr - stash->dwarf_abbrev_buffer) | |
d8d1c398 | 696 | >= stash->dwarf_abbrev_size) |
252b5132 RH |
697 | break; |
698 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
699 | abbrev_ptr += bytes_read; | |
700 | if (lookup_abbrev (abbrev_number,abbrevs) != NULL) | |
701 | break; | |
702 | } | |
703 | ||
704 | return abbrevs; | |
705 | } | |
706 | ||
cf716c56 | 707 | /* Read an attribute value described by an attribute form. */ |
252b5132 | 708 | |
f075ee0c | 709 | static bfd_byte * |
818a27ac AM |
710 | read_attribute_value (struct attribute *attr, |
711 | unsigned form, | |
712 | struct comp_unit *unit, | |
f075ee0c | 713 | bfd_byte *info_ptr) |
252b5132 RH |
714 | { |
715 | bfd *abfd = unit->abfd; | |
716 | unsigned int bytes_read; | |
717 | struct dwarf_block *blk; | |
dc810e39 | 718 | bfd_size_type amt; |
252b5132 | 719 | |
d45913a0 | 720 | attr->form = (enum dwarf_form) form; |
98591c73 | 721 | |
cf716c56 | 722 | switch (form) |
252b5132 RH |
723 | { |
724 | case DW_FORM_addr: | |
0cc1cf99 | 725 | /* FIXME: DWARF3 draft says DW_FORM_ref_addr is offset_size. */ |
252b5132 | 726 | case DW_FORM_ref_addr: |
482e2e37 | 727 | attr->u.val = read_address (unit, info_ptr); |
252b5132 RH |
728 | info_ptr += unit->addr_size; |
729 | break; | |
730 | case DW_FORM_block2: | |
dc810e39 | 731 | amt = sizeof (struct dwarf_block); |
818a27ac | 732 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
733 | blk->size = read_2_bytes (abfd, info_ptr); |
734 | info_ptr += 2; | |
735 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
736 | info_ptr += blk->size; | |
482e2e37 | 737 | attr->u.blk = blk; |
252b5132 RH |
738 | break; |
739 | case DW_FORM_block4: | |
dc810e39 | 740 | amt = sizeof (struct dwarf_block); |
818a27ac | 741 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
742 | blk->size = read_4_bytes (abfd, info_ptr); |
743 | info_ptr += 4; | |
744 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
745 | info_ptr += blk->size; | |
482e2e37 | 746 | attr->u.blk = blk; |
252b5132 RH |
747 | break; |
748 | case DW_FORM_data2: | |
482e2e37 | 749 | attr->u.val = read_2_bytes (abfd, info_ptr); |
252b5132 RH |
750 | info_ptr += 2; |
751 | break; | |
752 | case DW_FORM_data4: | |
482e2e37 | 753 | attr->u.val = read_4_bytes (abfd, info_ptr); |
252b5132 RH |
754 | info_ptr += 4; |
755 | break; | |
756 | case DW_FORM_data8: | |
482e2e37 | 757 | attr->u.val = read_8_bytes (abfd, info_ptr); |
252b5132 RH |
758 | info_ptr += 8; |
759 | break; | |
760 | case DW_FORM_string: | |
482e2e37 | 761 | attr->u.str = read_string (abfd, info_ptr, &bytes_read); |
252b5132 RH |
762 | info_ptr += bytes_read; |
763 | break; | |
d03ba2a1 | 764 | case DW_FORM_strp: |
482e2e37 | 765 | attr->u.str = read_indirect_string (unit, info_ptr, &bytes_read); |
d03ba2a1 JJ |
766 | info_ptr += bytes_read; |
767 | break; | |
252b5132 | 768 | case DW_FORM_block: |
dc810e39 | 769 | amt = sizeof (struct dwarf_block); |
818a27ac | 770 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
771 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
772 | info_ptr += bytes_read; | |
773 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
774 | info_ptr += blk->size; | |
482e2e37 | 775 | attr->u.blk = blk; |
252b5132 RH |
776 | break; |
777 | case DW_FORM_block1: | |
dc810e39 | 778 | amt = sizeof (struct dwarf_block); |
818a27ac | 779 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
780 | blk->size = read_1_byte (abfd, info_ptr); |
781 | info_ptr += 1; | |
782 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
783 | info_ptr += blk->size; | |
482e2e37 | 784 | attr->u.blk = blk; |
252b5132 RH |
785 | break; |
786 | case DW_FORM_data1: | |
482e2e37 | 787 | attr->u.val = read_1_byte (abfd, info_ptr); |
252b5132 RH |
788 | info_ptr += 1; |
789 | break; | |
790 | case DW_FORM_flag: | |
482e2e37 | 791 | attr->u.val = read_1_byte (abfd, info_ptr); |
252b5132 RH |
792 | info_ptr += 1; |
793 | break; | |
794 | case DW_FORM_sdata: | |
482e2e37 | 795 | attr->u.sval = read_signed_leb128 (abfd, info_ptr, &bytes_read); |
252b5132 RH |
796 | info_ptr += bytes_read; |
797 | break; | |
798 | case DW_FORM_udata: | |
482e2e37 | 799 | attr->u.val = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
252b5132 RH |
800 | info_ptr += bytes_read; |
801 | break; | |
802 | case DW_FORM_ref1: | |
482e2e37 | 803 | attr->u.val = read_1_byte (abfd, info_ptr); |
252b5132 RH |
804 | info_ptr += 1; |
805 | break; | |
806 | case DW_FORM_ref2: | |
482e2e37 | 807 | attr->u.val = read_2_bytes (abfd, info_ptr); |
252b5132 RH |
808 | info_ptr += 2; |
809 | break; | |
810 | case DW_FORM_ref4: | |
482e2e37 | 811 | attr->u.val = read_4_bytes (abfd, info_ptr); |
252b5132 RH |
812 | info_ptr += 4; |
813 | break; | |
81edd86d | 814 | case DW_FORM_ref8: |
482e2e37 | 815 | attr->u.val = read_8_bytes (abfd, info_ptr); |
81edd86d MM |
816 | info_ptr += 8; |
817 | break; | |
252b5132 | 818 | case DW_FORM_ref_udata: |
482e2e37 | 819 | attr->u.val = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
252b5132 RH |
820 | info_ptr += bytes_read; |
821 | break; | |
252b5132 | 822 | case DW_FORM_indirect: |
cf716c56 RH |
823 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
824 | info_ptr += bytes_read; | |
825 | info_ptr = read_attribute_value (attr, form, unit, info_ptr); | |
826 | break; | |
252b5132 | 827 | default: |
f46c2da6 | 828 | (*_bfd_error_handler) (_("Dwarf Error: Invalid or unhandled FORM value: %u."), |
cf716c56 | 829 | form); |
252b5132 RH |
830 | bfd_set_error (bfd_error_bad_value); |
831 | } | |
832 | return info_ptr; | |
833 | } | |
834 | ||
cf716c56 RH |
835 | /* Read an attribute described by an abbreviated attribute. */ |
836 | ||
f075ee0c | 837 | static bfd_byte * |
818a27ac AM |
838 | read_attribute (struct attribute *attr, |
839 | struct attr_abbrev *abbrev, | |
840 | struct comp_unit *unit, | |
f075ee0c | 841 | bfd_byte *info_ptr) |
cf716c56 RH |
842 | { |
843 | attr->name = abbrev->name; | |
844 | info_ptr = read_attribute_value (attr, abbrev->form, unit, info_ptr); | |
845 | return info_ptr; | |
846 | } | |
847 | ||
a092b084 | 848 | /* Source line information table routines. */ |
252b5132 RH |
849 | |
850 | #define FILE_ALLOC_CHUNK 5 | |
851 | #define DIR_ALLOC_CHUNK 5 | |
852 | ||
a092b084 NC |
853 | struct line_info |
854 | { | |
252b5132 | 855 | struct line_info* prev_line; |
252b5132 | 856 | bfd_vma address; |
f075ee0c | 857 | char *filename; |
252b5132 RH |
858 | unsigned int line; |
859 | unsigned int column; | |
a092b084 | 860 | int end_sequence; /* End of (sequential) code sequence. */ |
252b5132 RH |
861 | }; |
862 | ||
a092b084 NC |
863 | struct fileinfo |
864 | { | |
252b5132 RH |
865 | char *name; |
866 | unsigned int dir; | |
867 | unsigned int time; | |
868 | unsigned int size; | |
869 | }; | |
870 | ||
a092b084 NC |
871 | struct line_info_table |
872 | { | |
252b5132 | 873 | bfd* abfd; |
252b5132 RH |
874 | unsigned int num_files; |
875 | unsigned int num_dirs; | |
f075ee0c AM |
876 | char *comp_dir; |
877 | char **dirs; | |
252b5132 | 878 | struct fileinfo* files; |
709d67f1 AM |
879 | struct line_info* last_line; /* largest VMA */ |
880 | struct line_info* lcl_head; /* local head; used in 'add_line_info' */ | |
252b5132 RH |
881 | }; |
882 | ||
4ab527b0 FF |
883 | /* Remember some information about each function. If the function is |
884 | inlined (DW_TAG_inlined_subroutine) it may have two additional | |
885 | attributes, DW_AT_call_file and DW_AT_call_line, which specify the | |
886 | source code location where this function was inlined. */ | |
887 | ||
1ee24f27 DJ |
888 | struct funcinfo |
889 | { | |
709d67f1 AM |
890 | struct funcinfo *prev_func; /* Pointer to previous function in list of all functions */ |
891 | struct funcinfo *caller_func; /* Pointer to function one scope higher */ | |
892 | char *caller_file; /* Source location file name where caller_func inlines this func */ | |
893 | int caller_line; /* Source location line number where caller_func inlines this func */ | |
894 | char *file; /* Source location file name */ | |
895 | int line; /* Source location line number */ | |
4ab527b0 | 896 | int tag; |
f075ee0c | 897 | char *name; |
a13afe8e | 898 | struct arange arange; |
709d67f1 | 899 | asection *sec; /* Where the symbol is defined */ |
5420f73d L |
900 | }; |
901 | ||
902 | struct varinfo | |
903 | { | |
709d67f1 | 904 | /* Pointer to previous variable in list of all variables */ |
5420f73d | 905 | struct varinfo *prev_var; |
709d67f1 | 906 | /* Source location file name */ |
5420f73d | 907 | char *file; |
709d67f1 | 908 | /* Source location line number */ |
5420f73d L |
909 | int line; |
910 | int tag; | |
911 | char *name; | |
5cf2e3f0 | 912 | bfd_vma addr; |
709d67f1 | 913 | /* Where the symbol is defined */ |
5420f73d | 914 | asection *sec; |
709d67f1 | 915 | /* Is this a stack variable? */ |
5420f73d | 916 | unsigned int stack: 1; |
1ee24f27 DJ |
917 | }; |
918 | ||
d4c32a81 L |
919 | /* Return TRUE if NEW_LINE should sort after LINE. */ |
920 | ||
921 | static inline bfd_boolean | |
922 | new_line_sorts_after (struct line_info *new_line, struct line_info *line) | |
923 | { | |
924 | return (new_line->address > line->address | |
925 | || (new_line->address == line->address | |
aff90a5f | 926 | && new_line->end_sequence < line->end_sequence)); |
d4c32a81 L |
927 | } |
928 | ||
929 | ||
af3ef9fe NC |
930 | /* Adds a new entry to the line_info list in the line_info_table, ensuring |
931 | that the list is sorted. Note that the line_info list is sorted from | |
932 | highest to lowest VMA (with possible duplicates); that is, | |
933 | line_info->prev_line always accesses an equal or smaller VMA. */ | |
934 | ||
98591c73 | 935 | static void |
818a27ac AM |
936 | add_line_info (struct line_info_table *table, |
937 | bfd_vma address, | |
938 | char *filename, | |
939 | unsigned int line, | |
940 | unsigned int column, | |
941 | int end_sequence) | |
252b5132 | 942 | { |
dc810e39 | 943 | bfd_size_type amt = sizeof (struct line_info); |
709d67f1 | 944 | struct line_info* info = bfd_alloc (table->abfd, amt); |
252b5132 | 945 | |
d4c32a81 L |
946 | /* Set member data of 'info'. */ |
947 | info->address = address; | |
948 | info->line = line; | |
949 | info->column = column; | |
950 | info->end_sequence = end_sequence; | |
951 | ||
952 | if (filename && filename[0]) | |
953 | { | |
954 | info->filename = bfd_alloc (table->abfd, strlen (filename) + 1); | |
955 | if (info->filename) | |
956 | strcpy (info->filename, filename); | |
957 | } | |
958 | else | |
959 | info->filename = NULL; | |
960 | ||
e82ce529 AM |
961 | /* Find the correct location for 'info'. Normally we will receive |
962 | new line_info data 1) in order and 2) with increasing VMAs. | |
963 | However some compilers break the rules (cf. decode_line_info) and | |
964 | so we include some heuristics for quickly finding the correct | |
965 | location for 'info'. In particular, these heuristics optimize for | |
966 | the common case in which the VMA sequence that we receive is a | |
967 | list of locally sorted VMAs such as | |
968 | p...z a...j (where a < j < p < z) | |
252b5132 | 969 | |
e82ce529 AM |
970 | Note: table->lcl_head is used to head an *actual* or *possible* |
971 | sequence within the list (such as a...j) that is not directly | |
972 | headed by table->last_line | |
973 | ||
974 | Note: we may receive duplicate entries from 'decode_line_info'. */ | |
975 | ||
aff90a5f L |
976 | if (table->last_line |
977 | && table->last_line->address == address | |
978 | && table->last_line->end_sequence == end_sequence) | |
979 | { | |
980 | /* We only keep the last entry with the same address and end | |
981 | sequence. See PR ld/4986. */ | |
982 | if (table->lcl_head == table->last_line) | |
983 | table->lcl_head = info; | |
984 | info->prev_line = table->last_line->prev_line; | |
985 | table->last_line = info; | |
986 | } | |
987 | else if (!table->last_line | |
709d67f1 | 988 | || new_line_sorts_after (info, table->last_line)) |
d8d1c398 | 989 | { |
709d67f1 | 990 | /* Normal case: add 'info' to the beginning of the list */ |
d8d1c398 AM |
991 | info->prev_line = table->last_line; |
992 | table->last_line = info; | |
e82ce529 | 993 | |
d8d1c398 AM |
994 | /* lcl_head: initialize to head a *possible* sequence at the end. */ |
995 | if (!table->lcl_head) | |
996 | table->lcl_head = info; | |
997 | } | |
998 | else if (!new_line_sorts_after (info, table->lcl_head) | |
999 | && (!table->lcl_head->prev_line | |
1000 | || new_line_sorts_after (info, table->lcl_head->prev_line))) | |
1001 | { | |
1002 | /* Abnormal but easy: lcl_head is the head of 'info'. */ | |
1003 | info->prev_line = table->lcl_head->prev_line; | |
1004 | table->lcl_head->prev_line = info; | |
1005 | } | |
1006 | else | |
1007 | { | |
1008 | /* Abnormal and hard: Neither 'last_line' nor 'lcl_head' are valid | |
1009 | heads for 'info'. Reset 'lcl_head'. */ | |
709d67f1 | 1010 | struct line_info* li2 = table->last_line; /* always non-NULL */ |
d8d1c398 | 1011 | struct line_info* li1 = li2->prev_line; |
e82ce529 | 1012 | |
d8d1c398 AM |
1013 | while (li1) |
1014 | { | |
1015 | if (!new_line_sorts_after (info, li2) | |
1016 | && new_line_sorts_after (info, li1)) | |
1017 | break; | |
e82ce529 | 1018 | |
709d67f1 | 1019 | li2 = li1; /* always non-NULL */ |
d8d1c398 AM |
1020 | li1 = li1->prev_line; |
1021 | } | |
1022 | table->lcl_head = li2; | |
1023 | info->prev_line = table->lcl_head->prev_line; | |
1024 | table->lcl_head->prev_line = info; | |
1025 | } | |
252b5132 RH |
1026 | } |
1027 | ||
5ed6aba4 | 1028 | /* Extract a fully qualified filename from a line info table. |
af3ef9fe NC |
1029 | The returned string has been malloc'ed and it is the caller's |
1030 | responsibility to free it. */ | |
5ed6aba4 | 1031 | |
a092b084 | 1032 | static char * |
818a27ac | 1033 | concat_filename (struct line_info_table *table, unsigned int file) |
252b5132 | 1034 | { |
f075ee0c | 1035 | char *filename; |
159002ff RH |
1036 | |
1037 | if (file - 1 >= table->num_files) | |
1038 | { | |
75a657ba L |
1039 | /* FILE == 0 means unknown. */ |
1040 | if (file) | |
1041 | (*_bfd_error_handler) | |
1042 | (_("Dwarf Error: mangled line number section (bad file number).")); | |
af3ef9fe | 1043 | return strdup ("<unknown>"); |
159002ff RH |
1044 | } |
1045 | ||
1046 | filename = table->files[file - 1].name; | |
5ed6aba4 | 1047 | |
7421a730 | 1048 | if (!IS_ABSOLUTE_PATH (filename)) |
252b5132 | 1049 | { |
7421a730 AM |
1050 | char *dirname = NULL; |
1051 | char *subdirname = NULL; | |
1052 | char *name; | |
1053 | size_t len; | |
0dafd5f6 | 1054 | |
7421a730 AM |
1055 | if (table->files[file - 1].dir) |
1056 | subdirname = table->dirs[table->files[file - 1].dir - 1]; | |
1057 | ||
1058 | if (!subdirname || !IS_ABSOLUTE_PATH (subdirname)) | |
1059 | dirname = table->comp_dir; | |
1060 | ||
1061 | if (!dirname) | |
af3ef9fe | 1062 | { |
7421a730 AM |
1063 | dirname = subdirname; |
1064 | subdirname = NULL; | |
1065 | } | |
af3ef9fe | 1066 | |
7421a730 AM |
1067 | if (!dirname) |
1068 | return strdup (filename); | |
1069 | ||
1070 | len = strlen (dirname) + strlen (filename) + 2; | |
1071 | ||
1072 | if (subdirname) | |
1073 | { | |
1074 | len += strlen (subdirname) + 1; | |
1075 | name = bfd_malloc (len); | |
1076 | if (name) | |
1077 | sprintf (name, "%s/%s/%s", dirname, subdirname, filename); | |
1078 | } | |
1079 | else | |
1080 | { | |
af3ef9fe NC |
1081 | name = bfd_malloc (len); |
1082 | if (name) | |
1083 | sprintf (name, "%s/%s", dirname, filename); | |
af3ef9fe | 1084 | } |
7421a730 AM |
1085 | |
1086 | return name; | |
252b5132 | 1087 | } |
af3ef9fe NC |
1088 | |
1089 | return strdup (filename); | |
252b5132 RH |
1090 | } |
1091 | ||
f623be2b | 1092 | static void |
709d67f1 | 1093 | arange_add (bfd *abfd, struct arange *first_arange, bfd_vma low_pc, bfd_vma high_pc) |
f623be2b RH |
1094 | { |
1095 | struct arange *arange; | |
1096 | ||
709d67f1 | 1097 | /* If the first arange is empty, use it. */ |
a13afe8e FF |
1098 | if (first_arange->high == 0) |
1099 | { | |
1100 | first_arange->low = low_pc; | |
1101 | first_arange->high = high_pc; | |
1102 | return; | |
1103 | } | |
98591c73 | 1104 | |
a13afe8e FF |
1105 | /* Next see if we can cheaply extend an existing range. */ |
1106 | arange = first_arange; | |
f623be2b RH |
1107 | do |
1108 | { | |
1109 | if (low_pc == arange->high) | |
1110 | { | |
1111 | arange->high = high_pc; | |
1112 | return; | |
1113 | } | |
1114 | if (high_pc == arange->low) | |
1115 | { | |
1116 | arange->low = low_pc; | |
1117 | return; | |
1118 | } | |
1119 | arange = arange->next; | |
1120 | } | |
1121 | while (arange); | |
1122 | ||
a13afe8e | 1123 | /* Need to allocate a new arange and insert it into the arange list. |
709d67f1 | 1124 | Order isn't significant, so just insert after the first arange. */ |
a13afe8e | 1125 | arange = bfd_zalloc (abfd, sizeof (*arange)); |
f623be2b RH |
1126 | arange->low = low_pc; |
1127 | arange->high = high_pc; | |
a13afe8e FF |
1128 | arange->next = first_arange->next; |
1129 | first_arange->next = arange; | |
f623be2b RH |
1130 | } |
1131 | ||
b42bf1e0 NC |
1132 | /* Decode the line number information for UNIT. |
1133 | Note: this function allocates memory. It is the caller's | |
1134 | responsibility to free it. */ | |
252b5132 | 1135 | |
b42bf1e0 | 1136 | static struct line_info_table * |
818a27ac | 1137 | decode_line_info (struct comp_unit *unit, struct dwarf2_debug *stash) |
252b5132 RH |
1138 | { |
1139 | bfd *abfd = unit->abfd; | |
252b5132 | 1140 | struct line_info_table* table; |
f075ee0c AM |
1141 | bfd_byte *line_ptr; |
1142 | bfd_byte *line_end; | |
252b5132 | 1143 | struct line_head lh; |
d03ba2a1 | 1144 | unsigned int i, bytes_read, offset_size; |
252b5132 RH |
1145 | char *cur_file, *cur_dir; |
1146 | unsigned char op_code, extended_op, adj_opcode; | |
dc810e39 | 1147 | bfd_size_type amt; |
252b5132 | 1148 | |
69dd2e2d | 1149 | if (! stash->dwarf_line_buffer) |
252b5132 RH |
1150 | { |
1151 | asection *msec; | |
252b5132 RH |
1152 | |
1153 | msec = bfd_get_section_by_name (abfd, ".debug_line"); | |
1154 | if (! msec) | |
1155 | { | |
1156 | (*_bfd_error_handler) (_("Dwarf Error: Can't find .debug_line section.")); | |
1157 | bfd_set_error (bfd_error_bad_value); | |
1158 | return 0; | |
1159 | } | |
98591c73 | 1160 | |
eea6121a | 1161 | stash->dwarf_line_size = msec->size; |
6e84a906 DJ |
1162 | stash->dwarf_line_buffer |
1163 | = bfd_simple_get_relocated_section_contents (abfd, msec, NULL, | |
1164 | stash->syms); | |
f623be2b | 1165 | if (! stash->dwarf_line_buffer) |
252b5132 | 1166 | return 0; |
252b5132 RH |
1167 | } |
1168 | ||
6e84a906 DJ |
1169 | /* It is possible to get a bad value for the line_offset. Validate |
1170 | it here so that we won't get a segfault below. */ | |
ccdb16fc JW |
1171 | if (unit->line_offset >= stash->dwarf_line_size) |
1172 | { | |
f46c2da6 | 1173 | (*_bfd_error_handler) (_("Dwarf Error: Line offset (%lu) greater than or equal to .debug_line size (%lu)."), |
ccdb16fc JW |
1174 | unit->line_offset, stash->dwarf_line_size); |
1175 | bfd_set_error (bfd_error_bad_value); | |
1176 | return 0; | |
1177 | } | |
1178 | ||
dc810e39 | 1179 | amt = sizeof (struct line_info_table); |
818a27ac | 1180 | table = bfd_alloc (abfd, amt); |
252b5132 RH |
1181 | table->abfd = abfd; |
1182 | table->comp_dir = unit->comp_dir; | |
1183 | ||
1184 | table->num_files = 0; | |
1185 | table->files = NULL; | |
1186 | ||
1187 | table->num_dirs = 0; | |
1188 | table->dirs = NULL; | |
1189 | ||
159002ff RH |
1190 | table->files = NULL; |
1191 | table->last_line = NULL; | |
e82ce529 | 1192 | table->lcl_head = NULL; |
159002ff | 1193 | |
69dd2e2d | 1194 | line_ptr = stash->dwarf_line_buffer + unit->line_offset; |
252b5132 | 1195 | |
a092b084 | 1196 | /* Read in the prologue. */ |
91a4d569 AM |
1197 | lh.total_length = read_4_bytes (abfd, line_ptr); |
1198 | line_ptr += 4; | |
1199 | offset_size = 4; | |
1200 | if (lh.total_length == 0xffffffff) | |
dae2dd0d | 1201 | { |
dae2dd0d NC |
1202 | lh.total_length = read_8_bytes (abfd, line_ptr); |
1203 | line_ptr += 8; | |
1204 | offset_size = 8; | |
1205 | } | |
91a4d569 | 1206 | else if (lh.total_length == 0 && unit->addr_size == 8) |
d03ba2a1 | 1207 | { |
91a4d569 AM |
1208 | /* Handle (non-standard) 64-bit DWARF2 formats. */ |
1209 | lh.total_length = read_4_bytes (abfd, line_ptr); | |
1210 | line_ptr += 4; | |
d03ba2a1 JJ |
1211 | offset_size = 8; |
1212 | } | |
252b5132 RH |
1213 | line_end = line_ptr + lh.total_length; |
1214 | lh.version = read_2_bytes (abfd, line_ptr); | |
1215 | line_ptr += 2; | |
d03ba2a1 JJ |
1216 | if (offset_size == 4) |
1217 | lh.prologue_length = read_4_bytes (abfd, line_ptr); | |
1218 | else | |
1219 | lh.prologue_length = read_8_bytes (abfd, line_ptr); | |
1220 | line_ptr += offset_size; | |
252b5132 RH |
1221 | lh.minimum_instruction_length = read_1_byte (abfd, line_ptr); |
1222 | line_ptr += 1; | |
1223 | lh.default_is_stmt = read_1_byte (abfd, line_ptr); | |
1224 | line_ptr += 1; | |
1225 | lh.line_base = read_1_signed_byte (abfd, line_ptr); | |
1226 | line_ptr += 1; | |
1227 | lh.line_range = read_1_byte (abfd, line_ptr); | |
1228 | line_ptr += 1; | |
1229 | lh.opcode_base = read_1_byte (abfd, line_ptr); | |
1230 | line_ptr += 1; | |
dc810e39 | 1231 | amt = lh.opcode_base * sizeof (unsigned char); |
818a27ac | 1232 | lh.standard_opcode_lengths = bfd_alloc (abfd, amt); |
252b5132 RH |
1233 | |
1234 | lh.standard_opcode_lengths[0] = 1; | |
98591c73 | 1235 | |
252b5132 RH |
1236 | for (i = 1; i < lh.opcode_base; ++i) |
1237 | { | |
1238 | lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
1239 | line_ptr += 1; | |
1240 | } | |
1241 | ||
a092b084 | 1242 | /* Read directory table. */ |
252b5132 RH |
1243 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
1244 | { | |
1245 | line_ptr += bytes_read; | |
98591c73 | 1246 | |
252b5132 RH |
1247 | if ((table->num_dirs % DIR_ALLOC_CHUNK) == 0) |
1248 | { | |
35330cce NC |
1249 | char **tmp; |
1250 | ||
dc810e39 AM |
1251 | amt = table->num_dirs + DIR_ALLOC_CHUNK; |
1252 | amt *= sizeof (char *); | |
35330cce NC |
1253 | |
1254 | tmp = bfd_realloc (table->dirs, amt); | |
1255 | if (tmp == NULL) | |
1256 | { | |
1257 | free (table->dirs); | |
515ef31d | 1258 | free (table); |
35330cce NC |
1259 | return NULL; |
1260 | } | |
1261 | table->dirs = tmp; | |
252b5132 | 1262 | } |
98591c73 | 1263 | |
252b5132 RH |
1264 | table->dirs[table->num_dirs++] = cur_dir; |
1265 | } | |
98591c73 | 1266 | |
252b5132 RH |
1267 | line_ptr += bytes_read; |
1268 | ||
a092b084 | 1269 | /* Read file name table. */ |
252b5132 RH |
1270 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
1271 | { | |
1272 | line_ptr += bytes_read; | |
98591c73 | 1273 | |
252b5132 RH |
1274 | if ((table->num_files % FILE_ALLOC_CHUNK) == 0) |
1275 | { | |
35330cce NC |
1276 | struct fileinfo *tmp; |
1277 | ||
dc810e39 AM |
1278 | amt = table->num_files + FILE_ALLOC_CHUNK; |
1279 | amt *= sizeof (struct fileinfo); | |
35330cce NC |
1280 | |
1281 | tmp = bfd_realloc (table->files, amt); | |
1282 | if (tmp == NULL) | |
1283 | { | |
1284 | free (table->files); | |
1285 | free (table->dirs); | |
b42bf1e0 | 1286 | free (table); |
35330cce NC |
1287 | return NULL; |
1288 | } | |
1289 | table->files = tmp; | |
252b5132 | 1290 | } |
98591c73 | 1291 | |
252b5132 RH |
1292 | table->files[table->num_files].name = cur_file; |
1293 | table->files[table->num_files].dir = | |
1294 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1295 | line_ptr += bytes_read; | |
1296 | table->files[table->num_files].time = | |
1297 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1298 | line_ptr += bytes_read; | |
1299 | table->files[table->num_files].size = | |
1300 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1301 | line_ptr += bytes_read; | |
1302 | table->num_files++; | |
1303 | } | |
98591c73 | 1304 | |
252b5132 RH |
1305 | line_ptr += bytes_read; |
1306 | ||
1307 | /* Read the statement sequences until there's nothing left. */ | |
1308 | while (line_ptr < line_end) | |
1309 | { | |
a092b084 | 1310 | /* State machine registers. */ |
252b5132 | 1311 | bfd_vma address = 0; |
8bfd78b3 | 1312 | char * filename = table->num_files ? concat_filename (table, 1) : NULL; |
252b5132 RH |
1313 | unsigned int line = 1; |
1314 | unsigned int column = 0; | |
1315 | int is_stmt = lh.default_is_stmt; | |
e2f6d277 NC |
1316 | int end_sequence = 0; |
1317 | /* eraxxon@alumni.rice.edu: Against the DWARF2 specs, some | |
e82ce529 AM |
1318 | compilers generate address sequences that are wildly out of |
1319 | order using DW_LNE_set_address (e.g. Intel C++ 6.0 compiler | |
1320 | for ia64-Linux). Thus, to determine the low and high | |
1321 | address, we must compare on every DW_LNS_copy, etc. */ | |
75758e9d | 1322 | bfd_vma low_pc = (bfd_vma) -1; |
e2f6d277 | 1323 | bfd_vma high_pc = 0; |
252b5132 | 1324 | |
a092b084 | 1325 | /* Decode the table. */ |
252b5132 RH |
1326 | while (! end_sequence) |
1327 | { | |
1328 | op_code = read_1_byte (abfd, line_ptr); | |
1329 | line_ptr += 1; | |
98591c73 | 1330 | |
1a509dcc | 1331 | if (op_code >= lh.opcode_base) |
e2f6d277 NC |
1332 | { |
1333 | /* Special operand. */ | |
1a509dcc GK |
1334 | adj_opcode = op_code - lh.opcode_base; |
1335 | address += (adj_opcode / lh.line_range) | |
1336 | * lh.minimum_instruction_length; | |
1337 | line += lh.line_base + (adj_opcode % lh.line_range); | |
1338 | /* Append row to matrix using current values. */ | |
1339 | add_line_info (table, address, filename, line, column, 0); | |
75758e9d AM |
1340 | if (address < low_pc) |
1341 | low_pc = address; | |
e2f6d277 NC |
1342 | if (address > high_pc) |
1343 | high_pc = address; | |
1a509dcc GK |
1344 | } |
1345 | else switch (op_code) | |
252b5132 RH |
1346 | { |
1347 | case DW_LNS_extended_op: | |
e2f6d277 NC |
1348 | /* Ignore length. */ |
1349 | line_ptr += 1; | |
252b5132 RH |
1350 | extended_op = read_1_byte (abfd, line_ptr); |
1351 | line_ptr += 1; | |
e2f6d277 | 1352 | |
252b5132 RH |
1353 | switch (extended_op) |
1354 | { | |
1355 | case DW_LNE_end_sequence: | |
1356 | end_sequence = 1; | |
f623be2b RH |
1357 | add_line_info (table, address, filename, line, column, |
1358 | end_sequence); | |
75758e9d AM |
1359 | if (address < low_pc) |
1360 | low_pc = address; | |
e2f6d277 NC |
1361 | if (address > high_pc) |
1362 | high_pc = address; | |
709d67f1 | 1363 | arange_add (unit->abfd, &unit->arange, low_pc, high_pc); |
252b5132 RH |
1364 | break; |
1365 | case DW_LNE_set_address: | |
1366 | address = read_address (unit, line_ptr); | |
1367 | line_ptr += unit->addr_size; | |
1368 | break; | |
1369 | case DW_LNE_define_file: | |
1370 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
1371 | line_ptr += bytes_read; | |
1372 | if ((table->num_files % FILE_ALLOC_CHUNK) == 0) | |
1373 | { | |
35330cce NC |
1374 | struct fileinfo *tmp; |
1375 | ||
dc810e39 AM |
1376 | amt = table->num_files + FILE_ALLOC_CHUNK; |
1377 | amt *= sizeof (struct fileinfo); | |
35330cce NC |
1378 | tmp = bfd_realloc (table->files, amt); |
1379 | if (tmp == NULL) | |
d8d1c398 | 1380 | { |
35330cce NC |
1381 | free (table->files); |
1382 | free (table->dirs); | |
b42bf1e0 | 1383 | free (table); |
35330cce NC |
1384 | free (filename); |
1385 | return NULL; | |
d8d1c398 | 1386 | } |
35330cce | 1387 | table->files = tmp; |
252b5132 RH |
1388 | } |
1389 | table->files[table->num_files].name = cur_file; | |
1390 | table->files[table->num_files].dir = | |
1391 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1392 | line_ptr += bytes_read; | |
1393 | table->files[table->num_files].time = | |
1394 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1395 | line_ptr += bytes_read; | |
1396 | table->files[table->num_files].size = | |
1397 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1398 | line_ptr += bytes_read; | |
1399 | table->num_files++; | |
1400 | break; | |
1401 | default: | |
1402 | (*_bfd_error_handler) (_("Dwarf Error: mangled line number section.")); | |
1403 | bfd_set_error (bfd_error_bad_value); | |
35330cce NC |
1404 | free (filename); |
1405 | free (table->files); | |
1406 | free (table->dirs); | |
b42bf1e0 | 1407 | free (table); |
35330cce | 1408 | return NULL; |
252b5132 RH |
1409 | } |
1410 | break; | |
1411 | case DW_LNS_copy: | |
159002ff | 1412 | add_line_info (table, address, filename, line, column, 0); |
75758e9d AM |
1413 | if (address < low_pc) |
1414 | low_pc = address; | |
e2f6d277 NC |
1415 | if (address > high_pc) |
1416 | high_pc = address; | |
252b5132 RH |
1417 | break; |
1418 | case DW_LNS_advance_pc: | |
1419 | address += lh.minimum_instruction_length | |
1420 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1421 | line_ptr += bytes_read; | |
1422 | break; | |
1423 | case DW_LNS_advance_line: | |
1424 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
1425 | line_ptr += bytes_read; | |
1426 | break; | |
1427 | case DW_LNS_set_file: | |
1428 | { | |
1429 | unsigned int file; | |
1430 | ||
e2f6d277 NC |
1431 | /* The file and directory tables are 0 |
1432 | based, the references are 1 based. */ | |
252b5132 RH |
1433 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
1434 | line_ptr += bytes_read; | |
af3ef9fe NC |
1435 | if (filename) |
1436 | free (filename); | |
252b5132 RH |
1437 | filename = concat_filename (table, file); |
1438 | break; | |
1439 | } | |
1440 | case DW_LNS_set_column: | |
1441 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1442 | line_ptr += bytes_read; | |
1443 | break; | |
1444 | case DW_LNS_negate_stmt: | |
1445 | is_stmt = (!is_stmt); | |
1446 | break; | |
1447 | case DW_LNS_set_basic_block: | |
252b5132 RH |
1448 | break; |
1449 | case DW_LNS_const_add_pc: | |
159002ff RH |
1450 | address += lh.minimum_instruction_length |
1451 | * ((255 - lh.opcode_base) / lh.line_range); | |
252b5132 RH |
1452 | break; |
1453 | case DW_LNS_fixed_advance_pc: | |
1454 | address += read_2_bytes (abfd, line_ptr); | |
1455 | line_ptr += 2; | |
1456 | break; | |
1a509dcc | 1457 | default: |
e2f6d277 | 1458 | { |
1a509dcc | 1459 | int i; |
5ed6aba4 | 1460 | |
e2f6d277 | 1461 | /* Unknown standard opcode, ignore it. */ |
1a509dcc GK |
1462 | for (i = 0; i < lh.standard_opcode_lengths[op_code]; i++) |
1463 | { | |
1464 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1465 | line_ptr += bytes_read; | |
1466 | } | |
1467 | } | |
252b5132 RH |
1468 | } |
1469 | } | |
5ed6aba4 | 1470 | |
af3ef9fe NC |
1471 | if (filename) |
1472 | free (filename); | |
252b5132 RH |
1473 | } |
1474 | ||
1475 | return table; | |
1476 | } | |
1477 | ||
b34976b6 AM |
1478 | /* If ADDR is within TABLE set the output parameters and return TRUE, |
1479 | otherwise return FALSE. The output parameters, FILENAME_PTR and | |
a092b084 | 1480 | LINENUMBER_PTR, are pointers to the objects to be filled in. */ |
252b5132 | 1481 | |
b34976b6 | 1482 | static bfd_boolean |
818a27ac AM |
1483 | lookup_address_in_line_info_table (struct line_info_table *table, |
1484 | bfd_vma addr, | |
1485 | struct funcinfo *function, | |
1486 | const char **filename_ptr, | |
1487 | unsigned int *linenumber_ptr) | |
252b5132 | 1488 | { |
e82ce529 | 1489 | /* Note: table->last_line should be a descendingly sorted list. */ |
159002ff | 1490 | struct line_info* next_line = table->last_line; |
e82ce529 AM |
1491 | struct line_info* each_line = NULL; |
1492 | *filename_ptr = NULL; | |
98591c73 | 1493 | |
159002ff | 1494 | if (!next_line) |
b34976b6 | 1495 | return FALSE; |
159002ff RH |
1496 | |
1497 | each_line = next_line->prev_line; | |
1498 | ||
e82ce529 AM |
1499 | /* Check for large addresses */ |
1500 | if (addr > next_line->address) | |
1501 | each_line = NULL; /* ensure we skip over the normal case */ | |
1502 | ||
1503 | /* Normal case: search the list; save */ | |
159002ff | 1504 | while (each_line && next_line) |
252b5132 | 1505 | { |
e82ce529 AM |
1506 | /* If we have an address match, save this info. This allows us |
1507 | to return as good as results as possible for strange debugging | |
1508 | info. */ | |
b34976b6 | 1509 | bfd_boolean addr_match = FALSE; |
a13afe8e | 1510 | if (each_line->address <= addr && addr < next_line->address) |
252b5132 | 1511 | { |
b34976b6 | 1512 | addr_match = TRUE; |
e82ce529 | 1513 | |
1ee24f27 DJ |
1514 | /* If this line appears to span functions, and addr is in the |
1515 | later function, return the first line of that function instead | |
1516 | of the last line of the earlier one. This check is for GCC | |
1517 | 2.95, which emits the first line number for a function late. */ | |
a13afe8e FF |
1518 | |
1519 | if (function != NULL) | |
1ee24f27 | 1520 | { |
a13afe8e FF |
1521 | bfd_vma lowest_pc; |
1522 | struct arange *arange; | |
1523 | ||
1524 | /* Find the lowest address in the function's range list */ | |
1525 | lowest_pc = function->arange.low; | |
1526 | for (arange = &function->arange; | |
1527 | arange; | |
1528 | arange = arange->next) | |
1529 | { | |
1530 | if (function->arange.low < lowest_pc) | |
1531 | lowest_pc = function->arange.low; | |
1532 | } | |
1533 | /* Check for spanning function and set outgoing line info */ | |
1534 | if (addr >= lowest_pc | |
1535 | && each_line->address < lowest_pc | |
1536 | && next_line->address > lowest_pc) | |
1537 | { | |
1538 | *filename_ptr = next_line->filename; | |
1539 | *linenumber_ptr = next_line->line; | |
1540 | } | |
1541 | else | |
1542 | { | |
1543 | *filename_ptr = each_line->filename; | |
1544 | *linenumber_ptr = each_line->line; | |
1545 | } | |
1ee24f27 | 1546 | } |
6bd00c5d L |
1547 | else |
1548 | { | |
1549 | *filename_ptr = each_line->filename; | |
1550 | *linenumber_ptr = each_line->line; | |
1551 | } | |
252b5132 | 1552 | } |
e82ce529 AM |
1553 | |
1554 | if (addr_match && !each_line->end_sequence) | |
b34976b6 | 1555 | return TRUE; /* we have definitely found what we want */ |
e82ce529 | 1556 | |
159002ff RH |
1557 | next_line = each_line; |
1558 | each_line = each_line->prev_line; | |
252b5132 | 1559 | } |
98591c73 | 1560 | |
e82ce529 AM |
1561 | /* At this point each_line is NULL but next_line is not. If we found |
1562 | a candidate end-of-sequence point in the loop above, we can return | |
1563 | that (compatibility with a bug in the Intel compiler); otherwise, | |
1564 | assuming that we found the containing function for this address in | |
1565 | this compilation unit, return the first line we have a number for | |
1566 | (compatibility with GCC 2.95). */ | |
1567 | if (*filename_ptr == NULL && function != NULL) | |
1ee24f27 DJ |
1568 | { |
1569 | *filename_ptr = next_line->filename; | |
1570 | *linenumber_ptr = next_line->line; | |
b34976b6 | 1571 | return TRUE; |
1ee24f27 DJ |
1572 | } |
1573 | ||
b34976b6 | 1574 | return FALSE; |
252b5132 | 1575 | } |
98591c73 | 1576 | |
a13afe8e FF |
1577 | /* Read in the .debug_ranges section for future reference */ |
1578 | ||
1579 | static bfd_boolean | |
1580 | read_debug_ranges (struct comp_unit *unit) | |
1581 | { | |
1582 | struct dwarf2_debug *stash = unit->stash; | |
1583 | if (! stash->dwarf_ranges_buffer) | |
1584 | { | |
1585 | bfd *abfd = unit->abfd; | |
1586 | asection *msec; | |
1587 | ||
1588 | msec = bfd_get_section_by_name (abfd, ".debug_ranges"); | |
1589 | if (! msec) | |
1590 | { | |
1591 | (*_bfd_error_handler) (_("Dwarf Error: Can't find .debug_ranges section.")); | |
1592 | bfd_set_error (bfd_error_bad_value); | |
1593 | return FALSE; | |
1594 | } | |
1595 | ||
1596 | stash->dwarf_ranges_size = msec->size; | |
1597 | stash->dwarf_ranges_buffer | |
1598 | = bfd_simple_get_relocated_section_contents (abfd, msec, NULL, | |
1599 | stash->syms); | |
1600 | if (! stash->dwarf_ranges_buffer) | |
1601 | return FALSE; | |
1602 | } | |
1603 | return TRUE; | |
1604 | } | |
1605 | ||
a092b084 | 1606 | /* Function table functions. */ |
252b5132 | 1607 | |
a13afe8e FF |
1608 | /* If ADDR is within TABLE, set FUNCTIONNAME_PTR, and return TRUE. |
1609 | Note that we need to find the function that has the smallest | |
1610 | range that contains ADDR, to handle inlined functions without | |
1611 | depending upon them being ordered in TABLE by increasing range. */ | |
252b5132 | 1612 | |
b34976b6 | 1613 | static bfd_boolean |
4ab527b0 | 1614 | lookup_address_in_function_table (struct comp_unit *unit, |
818a27ac AM |
1615 | bfd_vma addr, |
1616 | struct funcinfo **function_ptr, | |
1617 | const char **functionname_ptr) | |
252b5132 RH |
1618 | { |
1619 | struct funcinfo* each_func; | |
a13afe8e FF |
1620 | struct funcinfo* best_fit = NULL; |
1621 | struct arange *arange; | |
252b5132 | 1622 | |
4ab527b0 | 1623 | for (each_func = unit->function_table; |
252b5132 RH |
1624 | each_func; |
1625 | each_func = each_func->prev_func) | |
1626 | { | |
a13afe8e FF |
1627 | for (arange = &each_func->arange; |
1628 | arange; | |
1629 | arange = arange->next) | |
252b5132 | 1630 | { |
a13afe8e FF |
1631 | if (addr >= arange->low && addr < arange->high) |
1632 | { | |
1633 | if (!best_fit || | |
1634 | ((arange->high - arange->low) < (best_fit->arange.high - best_fit->arange.low))) | |
1635 | best_fit = each_func; | |
1636 | } | |
252b5132 RH |
1637 | } |
1638 | } | |
98591c73 | 1639 | |
a13afe8e FF |
1640 | if (best_fit) |
1641 | { | |
1642 | *functionname_ptr = best_fit->name; | |
1643 | *function_ptr = best_fit; | |
1644 | return TRUE; | |
1645 | } | |
1646 | else | |
1647 | { | |
1648 | return FALSE; | |
1649 | } | |
252b5132 RH |
1650 | } |
1651 | ||
5420f73d L |
1652 | /* If SYM at ADDR is within function table of UNIT, set FILENAME_PTR |
1653 | and LINENUMBER_PTR, and return TRUE. */ | |
1654 | ||
1655 | static bfd_boolean | |
1656 | lookup_symbol_in_function_table (struct comp_unit *unit, | |
1657 | asymbol *sym, | |
1658 | bfd_vma addr, | |
1659 | const char **filename_ptr, | |
1660 | unsigned int *linenumber_ptr) | |
1661 | { | |
1662 | struct funcinfo* each_func; | |
1663 | struct funcinfo* best_fit = NULL; | |
1664 | struct arange *arange; | |
1665 | const char *name = bfd_asymbol_name (sym); | |
1666 | asection *sec = bfd_get_section (sym); | |
1667 | ||
1668 | for (each_func = unit->function_table; | |
1669 | each_func; | |
1670 | each_func = each_func->prev_func) | |
1671 | { | |
1672 | for (arange = &each_func->arange; | |
1673 | arange; | |
1674 | arange = arange->next) | |
1675 | { | |
1676 | if ((!each_func->sec || each_func->sec == sec) | |
1677 | && addr >= arange->low | |
1678 | && addr < arange->high | |
650f284e | 1679 | && each_func->name |
5420f73d L |
1680 | && strcmp (name, each_func->name) == 0 |
1681 | && (!best_fit | |
1682 | || ((arange->high - arange->low) | |
1683 | < (best_fit->arange.high - best_fit->arange.low)))) | |
1684 | best_fit = each_func; | |
1685 | } | |
1686 | } | |
1687 | ||
1688 | if (best_fit) | |
1689 | { | |
1690 | best_fit->sec = sec; | |
1691 | *filename_ptr = best_fit->file; | |
1692 | *linenumber_ptr = best_fit->line; | |
1693 | return TRUE; | |
1694 | } | |
1695 | else | |
1696 | return FALSE; | |
1697 | } | |
1698 | ||
1699 | /* Variable table functions. */ | |
1700 | ||
1701 | /* If SYM is within variable table of UNIT, set FILENAME_PTR and | |
1702 | LINENUMBER_PTR, and return TRUE. */ | |
1703 | ||
1704 | static bfd_boolean | |
1705 | lookup_symbol_in_variable_table (struct comp_unit *unit, | |
1706 | asymbol *sym, | |
5cf2e3f0 | 1707 | bfd_vma addr, |
5420f73d L |
1708 | const char **filename_ptr, |
1709 | unsigned int *linenumber_ptr) | |
1710 | { | |
1711 | const char *name = bfd_asymbol_name (sym); | |
1712 | asection *sec = bfd_get_section (sym); | |
1713 | struct varinfo* each; | |
1714 | ||
1715 | for (each = unit->variable_table; each; each = each->prev_var) | |
1716 | if (each->stack == 0 | |
5cf2e3f0 L |
1717 | && each->file != NULL |
1718 | && each->name != NULL | |
1719 | && each->addr == addr | |
5420f73d L |
1720 | && (!each->sec || each->sec == sec) |
1721 | && strcmp (name, each->name) == 0) | |
1722 | break; | |
1723 | ||
1724 | if (each) | |
1725 | { | |
1726 | each->sec = sec; | |
1727 | *filename_ptr = each->file; | |
1728 | *linenumber_ptr = each->line; | |
1729 | return TRUE; | |
1730 | } | |
1731 | else | |
1732 | return FALSE; | |
1733 | } | |
1734 | ||
06f22d7e FF |
1735 | static char * |
1736 | find_abstract_instance_name (struct comp_unit *unit, bfd_uint64_t die_ref) | |
1737 | { | |
1738 | bfd *abfd = unit->abfd; | |
f075ee0c | 1739 | bfd_byte *info_ptr; |
06f22d7e FF |
1740 | unsigned int abbrev_number, bytes_read, i; |
1741 | struct abbrev_info *abbrev; | |
1742 | struct attribute attr; | |
1743 | char *name = 0; | |
1744 | ||
c0c28ab8 | 1745 | info_ptr = unit->info_ptr_unit + die_ref; |
06f22d7e FF |
1746 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
1747 | info_ptr += bytes_read; | |
1748 | ||
1749 | if (abbrev_number) | |
1750 | { | |
1751 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); | |
1752 | if (! abbrev) | |
1753 | { | |
1754 | (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."), | |
1755 | abbrev_number); | |
1756 | bfd_set_error (bfd_error_bad_value); | |
1757 | } | |
1758 | else | |
1759 | { | |
d5cbaa15 | 1760 | for (i = 0; i < abbrev->num_attrs; ++i) |
06f22d7e FF |
1761 | { |
1762 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr); | |
26bf4e33 FF |
1763 | switch (attr.name) |
1764 | { | |
1765 | case DW_AT_name: | |
d5cbaa15 JW |
1766 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ |
1767 | if (name == NULL) | |
1768 | name = attr.u.str; | |
26bf4e33 FF |
1769 | break; |
1770 | case DW_AT_specification: | |
1771 | name = find_abstract_instance_name (unit, attr.u.val); | |
1772 | break; | |
d5cbaa15 JW |
1773 | case DW_AT_MIPS_linkage_name: |
1774 | name = attr.u.str; | |
1775 | break; | |
26bf4e33 FF |
1776 | default: |
1777 | break; | |
1778 | } | |
06f22d7e FF |
1779 | } |
1780 | } | |
1781 | } | |
709d67f1 | 1782 | return (name); |
06f22d7e FF |
1783 | } |
1784 | ||
a13afe8e | 1785 | static void |
709d67f1 | 1786 | read_rangelist (struct comp_unit *unit, struct arange *arange, bfd_uint64_t offset) |
a13afe8e FF |
1787 | { |
1788 | bfd_byte *ranges_ptr; | |
1789 | bfd_vma base_address = unit->base_address; | |
1790 | ||
1791 | if (! unit->stash->dwarf_ranges_buffer) | |
1792 | { | |
1793 | if (! read_debug_ranges (unit)) | |
1794 | return; | |
1795 | } | |
1796 | ranges_ptr = unit->stash->dwarf_ranges_buffer + offset; | |
d8d1c398 | 1797 | |
a13afe8e FF |
1798 | for (;;) |
1799 | { | |
1800 | bfd_vma low_pc; | |
1801 | bfd_vma high_pc; | |
1802 | ||
a29b7e88 | 1803 | if (unit->addr_size == 4) |
a13afe8e FF |
1804 | { |
1805 | low_pc = read_4_bytes (unit->abfd, ranges_ptr); | |
1806 | ranges_ptr += 4; | |
1807 | high_pc = read_4_bytes (unit->abfd, ranges_ptr); | |
1808 | ranges_ptr += 4; | |
1809 | } | |
1810 | else | |
1811 | { | |
1812 | low_pc = read_8_bytes (unit->abfd, ranges_ptr); | |
1813 | ranges_ptr += 8; | |
1814 | high_pc = read_8_bytes (unit->abfd, ranges_ptr); | |
1815 | ranges_ptr += 8; | |
1816 | } | |
1817 | if (low_pc == 0 && high_pc == 0) | |
1818 | break; | |
1819 | if (low_pc == -1UL && high_pc != -1UL) | |
1820 | base_address = high_pc; | |
1821 | else | |
709d67f1 | 1822 | arange_add (unit->abfd, arange, base_address + low_pc, base_address + high_pc); |
a13afe8e FF |
1823 | } |
1824 | } | |
1825 | ||
a092b084 | 1826 | /* DWARF2 Compilation unit functions. */ |
252b5132 RH |
1827 | |
1828 | /* Scan over each die in a comp. unit looking for functions to add | |
b42bf1e0 NC |
1829 | to the function table and variables to the variable table. |
1830 | Returns TRUE upon success, FALSE otherwise. Allocates memory | |
1831 | blocks to the unit->function_table and unit->variable_table fields. | |
1832 | It is the caller's responsibility to free this memory. */ | |
252b5132 | 1833 | |
b34976b6 | 1834 | static bfd_boolean |
5420f73d | 1835 | scan_unit_for_symbols (struct comp_unit *unit) |
252b5132 RH |
1836 | { |
1837 | bfd *abfd = unit->abfd; | |
f075ee0c | 1838 | bfd_byte *info_ptr = unit->first_child_die_ptr; |
252b5132 | 1839 | int nesting_level = 1; |
c955f9cd JW |
1840 | struct funcinfo **nested_funcs; |
1841 | int nested_funcs_size; | |
1842 | ||
1843 | /* Maintain a stack of in-scope functions and inlined functions, which we | |
1844 | can use to set the caller_func field. */ | |
1845 | nested_funcs_size = 32; | |
1846 | nested_funcs = bfd_malloc (nested_funcs_size * sizeof (struct funcinfo *)); | |
1847 | if (nested_funcs == NULL) | |
1848 | return FALSE; | |
b42bf1e0 | 1849 | nested_funcs[nesting_level] = NULL; |
252b5132 RH |
1850 | |
1851 | while (nesting_level) | |
1852 | { | |
1853 | unsigned int abbrev_number, bytes_read, i; | |
1854 | struct abbrev_info *abbrev; | |
1855 | struct attribute attr; | |
1856 | struct funcinfo *func; | |
5420f73d | 1857 | struct varinfo *var; |
a13afe8e FF |
1858 | bfd_vma low_pc = 0; |
1859 | bfd_vma high_pc = 0; | |
252b5132 RH |
1860 | |
1861 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
1862 | info_ptr += bytes_read; | |
1863 | ||
1864 | if (! abbrev_number) | |
1865 | { | |
1866 | nesting_level--; | |
1867 | continue; | |
1868 | } | |
98591c73 | 1869 | |
252b5132 RH |
1870 | abbrev = lookup_abbrev (abbrev_number,unit->abbrevs); |
1871 | if (! abbrev) | |
1872 | { | |
f46c2da6 | 1873 | (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."), |
252b5132 RH |
1874 | abbrev_number); |
1875 | bfd_set_error (bfd_error_bad_value); | |
c955f9cd | 1876 | free (nested_funcs); |
b34976b6 | 1877 | return FALSE; |
252b5132 | 1878 | } |
98591c73 | 1879 | |
5420f73d | 1880 | var = NULL; |
06f22d7e | 1881 | if (abbrev->tag == DW_TAG_subprogram |
5420f73d | 1882 | || abbrev->tag == DW_TAG_entry_point |
06f22d7e | 1883 | || abbrev->tag == DW_TAG_inlined_subroutine) |
252b5132 | 1884 | { |
dc810e39 | 1885 | bfd_size_type amt = sizeof (struct funcinfo); |
b42bf1e0 | 1886 | |
818a27ac | 1887 | func = bfd_zalloc (abfd, amt); |
4ab527b0 | 1888 | func->tag = abbrev->tag; |
252b5132 RH |
1889 | func->prev_func = unit->function_table; |
1890 | unit->function_table = func; | |
bd210d54 | 1891 | BFD_ASSERT (!unit->cached); |
c955f9cd JW |
1892 | |
1893 | if (func->tag == DW_TAG_inlined_subroutine) | |
1894 | for (i = nesting_level - 1; i >= 1; i--) | |
1895 | if (nested_funcs[i]) | |
1896 | { | |
1897 | func->caller_func = nested_funcs[i]; | |
1898 | break; | |
1899 | } | |
1900 | nested_funcs[nesting_level] = func; | |
252b5132 RH |
1901 | } |
1902 | else | |
5420f73d L |
1903 | { |
1904 | func = NULL; | |
1905 | if (abbrev->tag == DW_TAG_variable) | |
1906 | { | |
1907 | bfd_size_type amt = sizeof (struct varinfo); | |
b42bf1e0 | 1908 | |
5420f73d L |
1909 | var = bfd_zalloc (abfd, amt); |
1910 | var->tag = abbrev->tag; | |
1911 | var->stack = 1; | |
1912 | var->prev_var = unit->variable_table; | |
1913 | unit->variable_table = var; | |
bd210d54 | 1914 | BFD_ASSERT (!unit->cached); |
5420f73d | 1915 | } |
c955f9cd JW |
1916 | |
1917 | /* No inline function in scope at this nesting level. */ | |
1918 | nested_funcs[nesting_level] = 0; | |
5420f73d | 1919 | } |
98591c73 | 1920 | |
252b5132 RH |
1921 | for (i = 0; i < abbrev->num_attrs; ++i) |
1922 | { | |
1923 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr); | |
98591c73 | 1924 | |
252b5132 RH |
1925 | if (func) |
1926 | { | |
1927 | switch (attr.name) | |
1928 | { | |
4ab527b0 FF |
1929 | case DW_AT_call_file: |
1930 | func->caller_file = concat_filename (unit->line_table, attr.u.val); | |
1931 | break; | |
1932 | ||
1933 | case DW_AT_call_line: | |
1934 | func->caller_line = attr.u.val; | |
1935 | break; | |
1936 | ||
06f22d7e FF |
1937 | case DW_AT_abstract_origin: |
1938 | func->name = find_abstract_instance_name (unit, attr.u.val); | |
1939 | break; | |
1940 | ||
252b5132 | 1941 | case DW_AT_name: |
252b5132 RH |
1942 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ |
1943 | if (func->name == NULL) | |
482e2e37 | 1944 | func->name = attr.u.str; |
252b5132 | 1945 | break; |
98591c73 | 1946 | |
252b5132 | 1947 | case DW_AT_MIPS_linkage_name: |
482e2e37 | 1948 | func->name = attr.u.str; |
252b5132 RH |
1949 | break; |
1950 | ||
1951 | case DW_AT_low_pc: | |
a13afe8e | 1952 | low_pc = attr.u.val; |
252b5132 RH |
1953 | break; |
1954 | ||
1955 | case DW_AT_high_pc: | |
a13afe8e FF |
1956 | high_pc = attr.u.val; |
1957 | break; | |
1958 | ||
1959 | case DW_AT_ranges: | |
709d67f1 | 1960 | read_rangelist (unit, &func->arange, attr.u.val); |
252b5132 RH |
1961 | break; |
1962 | ||
5420f73d L |
1963 | case DW_AT_decl_file: |
1964 | func->file = concat_filename (unit->line_table, | |
1965 | attr.u.val); | |
1966 | break; | |
1967 | ||
1968 | case DW_AT_decl_line: | |
1969 | func->line = attr.u.val; | |
1970 | break; | |
1971 | ||
1972 | default: | |
1973 | break; | |
1974 | } | |
1975 | } | |
1976 | else if (var) | |
1977 | { | |
1978 | switch (attr.name) | |
1979 | { | |
1980 | case DW_AT_name: | |
1981 | var->name = attr.u.str; | |
1982 | break; | |
1983 | ||
1984 | case DW_AT_decl_file: | |
1985 | var->file = concat_filename (unit->line_table, | |
1986 | attr.u.val); | |
1987 | break; | |
1988 | ||
1989 | case DW_AT_decl_line: | |
1990 | var->line = attr.u.val; | |
1991 | break; | |
1992 | ||
1993 | case DW_AT_external: | |
1994 | if (attr.u.val != 0) | |
1995 | var->stack = 0; | |
1996 | break; | |
1997 | ||
1998 | case DW_AT_location: | |
5cf2e3f0 | 1999 | switch (attr.form) |
5420f73d | 2000 | { |
5cf2e3f0 L |
2001 | case DW_FORM_block: |
2002 | case DW_FORM_block1: | |
2003 | case DW_FORM_block2: | |
2004 | case DW_FORM_block4: | |
2005 | if (*attr.u.blk->data == DW_OP_addr) | |
5420f73d | 2006 | { |
5cf2e3f0 | 2007 | var->stack = 0; |
98b880f4 JW |
2008 | |
2009 | /* Verify that DW_OP_addr is the only opcode in the | |
2010 | location, in which case the block size will be 1 | |
2011 | plus the address size. */ | |
2012 | /* ??? For TLS variables, gcc can emit | |
2013 | DW_OP_addr <addr> DW_OP_GNU_push_tls_address | |
2014 | which we don't handle here yet. */ | |
2015 | if (attr.u.blk->size == unit->addr_size + 1U) | |
2016 | var->addr = bfd_get (unit->addr_size * 8, | |
2017 | unit->abfd, | |
2018 | attr.u.blk->data + 1); | |
5420f73d | 2019 | } |
5cf2e3f0 | 2020 | break; |
d8d1c398 | 2021 | |
5cf2e3f0 L |
2022 | default: |
2023 | break; | |
5420f73d L |
2024 | } |
2025 | break; | |
2026 | ||
252b5132 RH |
2027 | default: |
2028 | break; | |
2029 | } | |
2030 | } | |
2031 | } | |
2032 | ||
a13afe8e FF |
2033 | if (func && high_pc != 0) |
2034 | { | |
2035 | arange_add (unit->abfd, &func->arange, low_pc, high_pc); | |
2036 | } | |
2037 | ||
252b5132 | 2038 | if (abbrev->has_children) |
c955f9cd JW |
2039 | { |
2040 | nesting_level++; | |
2041 | ||
2042 | if (nesting_level >= nested_funcs_size) | |
2043 | { | |
2044 | struct funcinfo **tmp; | |
2045 | ||
2046 | nested_funcs_size *= 2; | |
2047 | tmp = bfd_realloc (nested_funcs, | |
2048 | (nested_funcs_size | |
2049 | * sizeof (struct funcinfo *))); | |
2050 | if (tmp == NULL) | |
2051 | { | |
2052 | free (nested_funcs); | |
2053 | return FALSE; | |
2054 | } | |
2055 | nested_funcs = tmp; | |
2056 | } | |
2057 | nested_funcs[nesting_level] = 0; | |
2058 | } | |
252b5132 RH |
2059 | } |
2060 | ||
c955f9cd | 2061 | free (nested_funcs); |
b34976b6 | 2062 | return TRUE; |
252b5132 RH |
2063 | } |
2064 | ||
5e38c3b8 MM |
2065 | /* Parse a DWARF2 compilation unit starting at INFO_PTR. This |
2066 | includes the compilation unit header that proceeds the DIE's, but | |
5c4491d3 | 2067 | does not include the length field that precedes each compilation |
5e38c3b8 | 2068 | unit header. END_PTR points one past the end of this comp unit. |
d03ba2a1 | 2069 | OFFSET_SIZE is the size of DWARF2 offsets (either 4 or 8 bytes). |
252b5132 RH |
2070 | |
2071 | This routine does not read the whole compilation unit; only enough | |
2072 | to get to the line number information for the compilation unit. */ | |
2073 | ||
2074 | static struct comp_unit * | |
0d161102 | 2075 | parse_comp_unit (struct dwarf2_debug *stash, |
818a27ac | 2076 | bfd_vma unit_length, |
f075ee0c | 2077 | bfd_byte *info_ptr_unit, |
818a27ac | 2078 | unsigned int offset_size) |
252b5132 RH |
2079 | { |
2080 | struct comp_unit* unit; | |
f46c2da6 | 2081 | unsigned int version; |
8ce8c090 | 2082 | bfd_uint64_t abbrev_offset = 0; |
f46c2da6 | 2083 | unsigned int addr_size; |
252b5132 | 2084 | struct abbrev_info** abbrevs; |
252b5132 RH |
2085 | unsigned int abbrev_number, bytes_read, i; |
2086 | struct abbrev_info *abbrev; | |
2087 | struct attribute attr; | |
f075ee0c AM |
2088 | bfd_byte *info_ptr = stash->info_ptr; |
2089 | bfd_byte *end_ptr = info_ptr + unit_length; | |
dc810e39 | 2090 | bfd_size_type amt; |
a13afe8e FF |
2091 | bfd_vma low_pc = 0; |
2092 | bfd_vma high_pc = 0; | |
0d161102 | 2093 | bfd *abfd = stash->bfd; |
3fde5a36 | 2094 | |
252b5132 RH |
2095 | version = read_2_bytes (abfd, info_ptr); |
2096 | info_ptr += 2; | |
d03ba2a1 JJ |
2097 | BFD_ASSERT (offset_size == 4 || offset_size == 8); |
2098 | if (offset_size == 4) | |
5e38c3b8 | 2099 | abbrev_offset = read_4_bytes (abfd, info_ptr); |
d03ba2a1 | 2100 | else |
5e38c3b8 | 2101 | abbrev_offset = read_8_bytes (abfd, info_ptr); |
d03ba2a1 | 2102 | info_ptr += offset_size; |
252b5132 RH |
2103 | addr_size = read_1_byte (abfd, info_ptr); |
2104 | info_ptr += 1; | |
2105 | ||
2106 | if (version != 2) | |
2107 | { | |
f46c2da6 | 2108 | (*_bfd_error_handler) (_("Dwarf Error: found dwarf version '%u', this reader only handles version 2 information."), version); |
252b5132 RH |
2109 | bfd_set_error (bfd_error_bad_value); |
2110 | return 0; | |
2111 | } | |
2112 | ||
2113 | if (addr_size > sizeof (bfd_vma)) | |
2114 | { | |
2115 | (*_bfd_error_handler) (_("Dwarf Error: found address size '%u', this reader can not handle sizes greater than '%u'."), | |
2116 | addr_size, | |
f46c2da6 | 2117 | (unsigned int) sizeof (bfd_vma)); |
252b5132 RH |
2118 | bfd_set_error (bfd_error_bad_value); |
2119 | return 0; | |
2120 | } | |
2121 | ||
ecb651f0 | 2122 | if (addr_size != 2 && addr_size != 4 && addr_size != 8) |
252b5132 | 2123 | { |
f5a3e38a | 2124 | (*_bfd_error_handler) ("Dwarf Error: found address size '%u', this reader can only handle address sizes '2', '4' and '8'.", addr_size); |
252b5132 RH |
2125 | bfd_set_error (bfd_error_bad_value); |
2126 | return 0; | |
2127 | } | |
2128 | ||
a092b084 | 2129 | /* Read the abbrevs for this compilation unit into a table. */ |
51db3708 | 2130 | abbrevs = read_abbrevs (abfd, abbrev_offset, stash); |
252b5132 RH |
2131 | if (! abbrevs) |
2132 | return 0; | |
2133 | ||
2134 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2135 | info_ptr += bytes_read; | |
2136 | if (! abbrev_number) | |
2137 | { | |
f46c2da6 | 2138 | (*_bfd_error_handler) (_("Dwarf Error: Bad abbrev number: %u."), |
252b5132 RH |
2139 | abbrev_number); |
2140 | bfd_set_error (bfd_error_bad_value); | |
2141 | return 0; | |
2142 | } | |
2143 | ||
2144 | abbrev = lookup_abbrev (abbrev_number, abbrevs); | |
2145 | if (! abbrev) | |
2146 | { | |
f46c2da6 | 2147 | (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."), |
252b5132 RH |
2148 | abbrev_number); |
2149 | bfd_set_error (bfd_error_bad_value); | |
2150 | return 0; | |
2151 | } | |
98591c73 | 2152 | |
dc810e39 | 2153 | amt = sizeof (struct comp_unit); |
818a27ac | 2154 | unit = bfd_zalloc (abfd, amt); |
252b5132 | 2155 | unit->abfd = abfd; |
98591c73 | 2156 | unit->addr_size = addr_size; |
d03ba2a1 | 2157 | unit->offset_size = offset_size; |
252b5132 RH |
2158 | unit->abbrevs = abbrevs; |
2159 | unit->end_ptr = end_ptr; | |
d03ba2a1 | 2160 | unit->stash = stash; |
c0c28ab8 | 2161 | unit->info_ptr_unit = info_ptr_unit; |
252b5132 RH |
2162 | |
2163 | for (i = 0; i < abbrev->num_attrs; ++i) | |
2164 | { | |
2165 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr); | |
2166 | ||
2167 | /* Store the data if it is of an attribute we want to keep in a | |
2168 | partial symbol table. */ | |
2169 | switch (attr.name) | |
2170 | { | |
2171 | case DW_AT_stmt_list: | |
2172 | unit->stmtlist = 1; | |
482e2e37 | 2173 | unit->line_offset = attr.u.val; |
252b5132 RH |
2174 | break; |
2175 | ||
2176 | case DW_AT_name: | |
482e2e37 | 2177 | unit->name = attr.u.str; |
252b5132 RH |
2178 | break; |
2179 | ||
2180 | case DW_AT_low_pc: | |
a13afe8e FF |
2181 | low_pc = attr.u.val; |
2182 | /* If the compilation unit DIE has a DW_AT_low_pc attribute, | |
2183 | this is the base address to use when reading location | |
2184 | lists or range lists. */ | |
2185 | unit->base_address = low_pc; | |
252b5132 RH |
2186 | break; |
2187 | ||
2188 | case DW_AT_high_pc: | |
a13afe8e FF |
2189 | high_pc = attr.u.val; |
2190 | break; | |
2191 | ||
2192 | case DW_AT_ranges: | |
709d67f1 | 2193 | read_rangelist (unit, &unit->arange, attr.u.val); |
252b5132 RH |
2194 | break; |
2195 | ||
2196 | case DW_AT_comp_dir: | |
2197 | { | |
f075ee0c | 2198 | char *comp_dir = attr.u.str; |
252b5132 RH |
2199 | if (comp_dir) |
2200 | { | |
2201 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2202 | directory, get rid of it. */ | |
818a27ac | 2203 | char *cp = strchr (comp_dir, ':'); |
252b5132 RH |
2204 | |
2205 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2206 | comp_dir = cp + 1; | |
2207 | } | |
2208 | unit->comp_dir = comp_dir; | |
2209 | break; | |
2210 | } | |
2211 | ||
2212 | default: | |
2213 | break; | |
2214 | } | |
2215 | } | |
a13afe8e | 2216 | if (high_pc != 0) |
709d67f1 AM |
2217 | { |
2218 | arange_add (unit->abfd, &unit->arange, low_pc, high_pc); | |
2219 | } | |
252b5132 RH |
2220 | |
2221 | unit->first_child_die_ptr = info_ptr; | |
2222 | return unit; | |
2223 | } | |
2224 | ||
6dd55cb7 L |
2225 | /* Return TRUE if UNIT may contain the address given by ADDR. When |
2226 | there are functions written entirely with inline asm statements, the | |
2227 | range info in the compilation unit header may not be correct. We | |
2228 | need to consult the line info table to see if a compilation unit | |
2229 | really contains the given address. */ | |
252b5132 | 2230 | |
b34976b6 | 2231 | static bfd_boolean |
818a27ac | 2232 | comp_unit_contains_address (struct comp_unit *unit, bfd_vma addr) |
252b5132 | 2233 | { |
709d67f1 AM |
2234 | struct arange *arange; |
2235 | ||
2236 | if (unit->error) | |
2237 | return FALSE; | |
2238 | ||
2239 | arange = &unit->arange; | |
2240 | do | |
2241 | { | |
2242 | if (addr >= arange->low && addr < arange->high) | |
2243 | return TRUE; | |
2244 | arange = arange->next; | |
2245 | } | |
2246 | while (arange); | |
2247 | ||
2248 | return FALSE; | |
252b5132 RH |
2249 | } |
2250 | ||
252b5132 RH |
2251 | /* If UNIT contains ADDR, set the output parameters to the values for |
2252 | the line containing ADDR. The output parameters, FILENAME_PTR, | |
2253 | FUNCTIONNAME_PTR, and LINENUMBER_PTR, are pointers to the objects | |
98591c73 | 2254 | to be filled in. |
252b5132 | 2255 | |
ab3acfbe | 2256 | Return TRUE if UNIT contains ADDR, and no errors were encountered; |
b34976b6 | 2257 | FALSE otherwise. */ |
252b5132 | 2258 | |
b34976b6 | 2259 | static bfd_boolean |
818a27ac AM |
2260 | comp_unit_find_nearest_line (struct comp_unit *unit, |
2261 | bfd_vma addr, | |
2262 | const char **filename_ptr, | |
2263 | const char **functionname_ptr, | |
2264 | unsigned int *linenumber_ptr, | |
2265 | struct dwarf2_debug *stash) | |
252b5132 | 2266 | { |
b34976b6 AM |
2267 | bfd_boolean line_p; |
2268 | bfd_boolean func_p; | |
1ee24f27 | 2269 | struct funcinfo *function; |
98591c73 | 2270 | |
252b5132 | 2271 | if (unit->error) |
b34976b6 | 2272 | return FALSE; |
252b5132 RH |
2273 | |
2274 | if (! unit->line_table) | |
2275 | { | |
2276 | if (! unit->stmtlist) | |
2277 | { | |
2278 | unit->error = 1; | |
b34976b6 | 2279 | return FALSE; |
252b5132 | 2280 | } |
98591c73 | 2281 | |
51db3708 | 2282 | unit->line_table = decode_line_info (unit, stash); |
252b5132 RH |
2283 | |
2284 | if (! unit->line_table) | |
2285 | { | |
2286 | unit->error = 1; | |
b34976b6 | 2287 | return FALSE; |
252b5132 | 2288 | } |
98591c73 | 2289 | |
3f5864e1 | 2290 | if (unit->first_child_die_ptr < unit->end_ptr |
5420f73d | 2291 | && ! scan_unit_for_symbols (unit)) |
252b5132 RH |
2292 | { |
2293 | unit->error = 1; | |
b34976b6 | 2294 | return FALSE; |
252b5132 RH |
2295 | } |
2296 | } | |
2297 | ||
1ee24f27 | 2298 | function = NULL; |
4ab527b0 | 2299 | func_p = lookup_address_in_function_table (unit, addr, |
e2f6d277 | 2300 | &function, functionname_ptr); |
4ab527b0 FF |
2301 | if (func_p && (function->tag == DW_TAG_inlined_subroutine)) |
2302 | stash->inliner_chain = function; | |
e2f6d277 NC |
2303 | line_p = lookup_address_in_line_info_table (unit->line_table, addr, |
2304 | function, filename_ptr, | |
252b5132 | 2305 | linenumber_ptr); |
b34976b6 | 2306 | return line_p || func_p; |
252b5132 RH |
2307 | } |
2308 | ||
bd210d54 NC |
2309 | /* Check to see if line info is already decoded in a comp_unit. |
2310 | If not, decode it. Returns TRUE if no errors were encountered; | |
5420f73d L |
2311 | FALSE otherwise. */ |
2312 | ||
2313 | static bfd_boolean | |
bd210d54 NC |
2314 | comp_unit_maybe_decode_line_info (struct comp_unit *unit, |
2315 | struct dwarf2_debug *stash) | |
5420f73d L |
2316 | { |
2317 | if (unit->error) | |
2318 | return FALSE; | |
2319 | ||
2320 | if (! unit->line_table) | |
2321 | { | |
2322 | if (! unit->stmtlist) | |
2323 | { | |
2324 | unit->error = 1; | |
2325 | return FALSE; | |
2326 | } | |
2327 | ||
2328 | unit->line_table = decode_line_info (unit, stash); | |
2329 | ||
2330 | if (! unit->line_table) | |
2331 | { | |
2332 | unit->error = 1; | |
2333 | return FALSE; | |
2334 | } | |
2335 | ||
2336 | if (unit->first_child_die_ptr < unit->end_ptr | |
2337 | && ! scan_unit_for_symbols (unit)) | |
2338 | { | |
2339 | unit->error = 1; | |
2340 | return FALSE; | |
2341 | } | |
2342 | } | |
2343 | ||
bd210d54 NC |
2344 | return TRUE; |
2345 | } | |
2346 | ||
2347 | /* If UNIT contains SYM at ADDR, set the output parameters to the | |
2348 | values for the line containing SYM. The output parameters, | |
2349 | FILENAME_PTR, and LINENUMBER_PTR, are pointers to the objects to be | |
2350 | filled in. | |
2351 | ||
2352 | Return TRUE if UNIT contains SYM, and no errors were encountered; | |
2353 | FALSE otherwise. */ | |
2354 | ||
2355 | static bfd_boolean | |
2356 | comp_unit_find_line (struct comp_unit *unit, | |
2357 | asymbol *sym, | |
2358 | bfd_vma addr, | |
2359 | const char **filename_ptr, | |
2360 | unsigned int *linenumber_ptr, | |
2361 | struct dwarf2_debug *stash) | |
2362 | { | |
2363 | if (!comp_unit_maybe_decode_line_info (unit, stash)) | |
2364 | return FALSE; | |
2365 | ||
5420f73d L |
2366 | if (sym->flags & BSF_FUNCTION) |
2367 | return lookup_symbol_in_function_table (unit, sym, addr, | |
2368 | filename_ptr, | |
2369 | linenumber_ptr); | |
bd210d54 NC |
2370 | |
2371 | return lookup_symbol_in_variable_table (unit, sym, addr, | |
2372 | filename_ptr, | |
2373 | linenumber_ptr); | |
2374 | } | |
2375 | ||
2376 | static struct funcinfo * | |
2377 | reverse_funcinfo_list (struct funcinfo *head) | |
2378 | { | |
2379 | struct funcinfo *rhead; | |
2380 | struct funcinfo *temp; | |
2381 | ||
2382 | for (rhead = NULL; head; head = temp) | |
2383 | { | |
2384 | temp = head->prev_func; | |
2385 | head->prev_func = rhead; | |
2386 | rhead = head; | |
2387 | } | |
2388 | return rhead; | |
2389 | } | |
2390 | ||
2391 | static struct varinfo * | |
2392 | reverse_varinfo_list (struct varinfo *head) | |
2393 | { | |
2394 | struct varinfo *rhead; | |
2395 | struct varinfo *temp; | |
2396 | ||
2397 | for (rhead = NULL; head; head = temp) | |
2398 | { | |
2399 | temp = head->prev_var; | |
2400 | head->prev_var = rhead; | |
2401 | rhead = head; | |
2402 | } | |
2403 | return rhead; | |
2404 | } | |
2405 | ||
2406 | /* Extract all interesting funcinfos and varinfos of a compilation | |
2407 | unit into hash tables for faster lookup. Returns TRUE if no | |
2408 | errors were enountered; FALSE otherwise. */ | |
2409 | ||
2410 | static bfd_boolean | |
2411 | comp_unit_hash_info (struct dwarf2_debug *stash, | |
2412 | struct comp_unit *unit, | |
2413 | struct info_hash_table *funcinfo_hash_table, | |
2414 | struct info_hash_table *varinfo_hash_table) | |
2415 | { | |
2416 | struct funcinfo* each_func; | |
2417 | struct varinfo* each_var; | |
2418 | bfd_boolean okay = TRUE; | |
2419 | ||
2420 | BFD_ASSERT (stash->info_hash_status != STASH_INFO_HASH_DISABLED); | |
2421 | ||
2422 | if (!comp_unit_maybe_decode_line_info (unit, stash)) | |
2423 | return FALSE; | |
2424 | ||
2425 | BFD_ASSERT (!unit->cached); | |
2426 | ||
2427 | /* To preserve the original search order, we went to visit the function | |
2428 | infos in the reversed order of the list. However, making the list | |
2429 | bi-directional use quite a bit of extra memory. So we reverse | |
2430 | the list first, traverse the list in the now reversed order and | |
2431 | finally reverse the list again to get back the original order. */ | |
2432 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
2433 | for (each_func = unit->function_table; | |
2434 | each_func && okay; | |
2435 | each_func = each_func->prev_func) | |
2436 | { | |
2437 | /* Skip nameless functions. */ | |
2438 | if (each_func->name) | |
2439 | /* There is no need to copy name string into hash table as | |
2440 | name string is either in the dwarf string buffer or | |
2441 | info in the stash. */ | |
2442 | okay = insert_info_hash_table (funcinfo_hash_table, each_func->name, | |
2443 | (void*) each_func, FALSE); | |
2444 | } | |
2445 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
2446 | if (!okay) | |
2447 | return FALSE; | |
2448 | ||
2449 | /* We do the same for variable infos. */ | |
2450 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
2451 | for (each_var = unit->variable_table; | |
2452 | each_var && okay; | |
2453 | each_var = each_var->prev_var) | |
2454 | { | |
2455 | /* Skip stack vars and vars with no files or names. */ | |
2456 | if (each_var->stack == 0 | |
2457 | && each_var->file != NULL | |
2458 | && each_var->name != NULL) | |
2459 | /* There is no need to copy name string into hash table as | |
2460 | name string is either in the dwarf string buffer or | |
2461 | info in the stash. */ | |
2462 | okay = insert_info_hash_table (varinfo_hash_table, each_var->name, | |
2463 | (void*) each_var, FALSE); | |
2464 | } | |
2465 | ||
2466 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
2467 | unit->cached = TRUE; | |
2468 | return okay; | |
5420f73d L |
2469 | } |
2470 | ||
e2f6d277 NC |
2471 | /* Locate a section in a BFD containing debugging info. The search starts |
2472 | from the section after AFTER_SEC, or from the first section in the BFD if | |
2473 | AFTER_SEC is NULL. The search works by examining the names of the | |
2474 | sections. There are two permissiable names. The first is .debug_info. | |
2475 | This is the standard DWARF2 name. The second is a prefix .gnu.linkonce.wi. | |
2476 | This is a variation on the .debug_info section which has a checksum | |
2477 | describing the contents appended onto the name. This allows the linker to | |
2478 | identify and discard duplicate debugging sections for different | |
2479 | compilation units. */ | |
a092b084 NC |
2480 | #define DWARF2_DEBUG_INFO ".debug_info" |
2481 | #define GNU_LINKONCE_INFO ".gnu.linkonce.wi." | |
2482 | ||
2483 | static asection * | |
818a27ac | 2484 | find_debug_info (bfd *abfd, asection *after_sec) |
a092b084 NC |
2485 | { |
2486 | asection * msec; | |
2487 | ||
0d161102 | 2488 | msec = after_sec != NULL ? after_sec->next : abfd->sections; |
a092b084 NC |
2489 | |
2490 | while (msec) | |
2491 | { | |
2492 | if (strcmp (msec->name, DWARF2_DEBUG_INFO) == 0) | |
2493 | return msec; | |
2494 | ||
0112cd26 | 2495 | if (CONST_STRNEQ (msec->name, GNU_LINKONCE_INFO)) |
a092b084 NC |
2496 | return msec; |
2497 | ||
2498 | msec = msec->next; | |
2499 | } | |
2500 | ||
2501 | return NULL; | |
2502 | } | |
2503 | ||
d4c32a81 L |
2504 | /* Unset vmas for loadable sections in STASH. */ |
2505 | ||
2506 | static void | |
2507 | unset_sections (struct dwarf2_debug *stash) | |
2508 | { | |
2509 | unsigned int i; | |
2510 | struct loadable_section *p; | |
2511 | ||
2512 | i = stash->loadable_section_count; | |
2513 | p = stash->loadable_sections; | |
2514 | for (; i > 0; i--, p++) | |
2515 | p->section->vma = 0; | |
2516 | } | |
2517 | ||
2518 | /* Set unique vmas for loadable sections in ABFD and save vmas in | |
2519 | STASH for unset_sections. */ | |
35ccda9e L |
2520 | |
2521 | static bfd_boolean | |
d4c32a81 | 2522 | place_sections (bfd *abfd, struct dwarf2_debug *stash) |
35ccda9e | 2523 | { |
d4c32a81 L |
2524 | struct loadable_section *p; |
2525 | unsigned int i; | |
2526 | ||
2527 | if (stash->loadable_section_count != 0) | |
35ccda9e | 2528 | { |
d4c32a81 L |
2529 | i = stash->loadable_section_count; |
2530 | p = stash->loadable_sections; | |
2531 | for (; i > 0; i--, p++) | |
2532 | p->section->vma = p->adj_vma; | |
2533 | } | |
2534 | else | |
2535 | { | |
2536 | asection *sect; | |
2537 | bfd_vma last_vma = 0; | |
2538 | bfd_size_type amt; | |
2539 | struct loadable_section *p; | |
35ccda9e | 2540 | |
d4c32a81 L |
2541 | i = 0; |
2542 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
35ccda9e | 2543 | { |
d4c32a81 L |
2544 | bfd_size_type sz; |
2545 | ||
2546 | if (sect->vma != 0 || (sect->flags & SEC_LOAD) == 0) | |
2547 | continue; | |
2548 | ||
2549 | sz = sect->rawsize ? sect->rawsize : sect->size; | |
2550 | if (sz == 0) | |
2551 | continue; | |
2552 | ||
2553 | i++; | |
2554 | } | |
2555 | ||
2556 | amt = i * sizeof (struct loadable_section); | |
2557 | p = (struct loadable_section *) bfd_zalloc (abfd, amt); | |
2558 | if (! p) | |
2559 | return FALSE; | |
2560 | ||
2561 | stash->loadable_sections = p; | |
2562 | stash->loadable_section_count = i; | |
2563 | ||
2564 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
2565 | { | |
2566 | bfd_size_type sz; | |
2567 | ||
2568 | if (sect->vma != 0 || (sect->flags & SEC_LOAD) == 0) | |
2569 | continue; | |
2570 | ||
2571 | sz = sect->rawsize ? sect->rawsize : sect->size; | |
2572 | if (sz == 0) | |
2573 | continue; | |
2574 | ||
2575 | p->section = sect; | |
2576 | if (last_vma != 0) | |
2577 | { | |
2578 | /* Align the new address to the current section | |
2579 | alignment. */ | |
2580 | last_vma = ((last_vma | |
2581 | + ~((bfd_vma) -1 << sect->alignment_power)) | |
2582 | & ((bfd_vma) -1 << sect->alignment_power)); | |
2583 | sect->vma = last_vma; | |
2584 | } | |
2585 | p->adj_vma = sect->vma; | |
2586 | last_vma += sect->vma + sz; | |
2587 | ||
2588 | p++; | |
35ccda9e L |
2589 | } |
2590 | } | |
2591 | ||
2592 | return TRUE; | |
2593 | } | |
2594 | ||
bd210d54 NC |
2595 | /* Look up a funcinfo by name using the given info hash table. If found, |
2596 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
2597 | ||
2598 | This function returns TRUE if a funcinfo that matches the given symbol | |
2599 | and address is found with any error; otherwise it returns FALSE. */ | |
2600 | ||
2601 | static bfd_boolean | |
2602 | info_hash_lookup_funcinfo (struct info_hash_table *hash_table, | |
2603 | asymbol *sym, | |
2604 | bfd_vma addr, | |
2605 | const char **filename_ptr, | |
2606 | unsigned int *linenumber_ptr) | |
2607 | { | |
2608 | struct funcinfo* each_func; | |
2609 | struct funcinfo* best_fit = NULL; | |
2610 | struct info_list_node *node; | |
2611 | struct arange *arange; | |
2612 | const char *name = bfd_asymbol_name (sym); | |
2613 | asection *sec = bfd_get_section (sym); | |
2614 | ||
2615 | for (node = lookup_info_hash_table (hash_table, name); | |
2616 | node; | |
2617 | node = node->next) | |
2618 | { | |
2619 | each_func = node->info; | |
2620 | for (arange = &each_func->arange; | |
2621 | arange; | |
2622 | arange = arange->next) | |
2623 | { | |
2624 | if ((!each_func->sec || each_func->sec == sec) | |
2625 | && addr >= arange->low | |
2626 | && addr < arange->high | |
2627 | && (!best_fit | |
2628 | || ((arange->high - arange->low) | |
2629 | < (best_fit->arange.high - best_fit->arange.low)))) | |
2630 | best_fit = each_func; | |
2631 | } | |
2632 | } | |
2633 | ||
2634 | if (best_fit) | |
2635 | { | |
2636 | best_fit->sec = sec; | |
2637 | *filename_ptr = best_fit->file; | |
2638 | *linenumber_ptr = best_fit->line; | |
2639 | return TRUE; | |
2640 | } | |
2641 | ||
2642 | return FALSE; | |
2643 | } | |
2644 | ||
2645 | /* Look up a varinfo by name using the given info hash table. If found, | |
2646 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
2647 | ||
2648 | This function returns TRUE if a varinfo that matches the given symbol | |
2649 | and address is found with any error; otherwise it returns FALSE. */ | |
2650 | ||
2651 | static bfd_boolean | |
2652 | info_hash_lookup_varinfo (struct info_hash_table *hash_table, | |
2653 | asymbol *sym, | |
2654 | bfd_vma addr, | |
2655 | const char **filename_ptr, | |
2656 | unsigned int *linenumber_ptr) | |
2657 | { | |
2658 | const char *name = bfd_asymbol_name (sym); | |
2659 | asection *sec = bfd_get_section (sym); | |
2660 | struct varinfo* each; | |
2661 | struct info_list_node *node; | |
2662 | ||
2663 | for (node = lookup_info_hash_table (hash_table, name); | |
2664 | node; | |
2665 | node = node->next) | |
2666 | { | |
2667 | each = node->info; | |
2668 | if (each->addr == addr | |
2669 | && (!each->sec || each->sec == sec)) | |
2670 | { | |
2671 | each->sec = sec; | |
2672 | *filename_ptr = each->file; | |
2673 | *linenumber_ptr = each->line; | |
2674 | return TRUE; | |
2675 | } | |
2676 | } | |
2677 | ||
2678 | return FALSE; | |
2679 | } | |
2680 | ||
2681 | /* Update the funcinfo and varinfo info hash tables if they are | |
2682 | not up to date. Returns TRUE if there is no error; otherwise | |
2683 | returns FALSE and disable the info hash tables. */ | |
2684 | ||
2685 | static bfd_boolean | |
2686 | stash_maybe_update_info_hash_tables (struct dwarf2_debug *stash) | |
2687 | { | |
2688 | struct comp_unit *each; | |
2689 | ||
2690 | /* Exit if hash tables are up-to-date. */ | |
2691 | if (stash->all_comp_units == stash->hash_units_head) | |
2692 | return TRUE; | |
2693 | ||
2694 | if (stash->hash_units_head) | |
2695 | each = stash->hash_units_head->prev_unit; | |
2696 | else | |
2697 | each = stash->last_comp_unit; | |
2698 | ||
2699 | while (each) | |
2700 | { | |
2701 | if (!comp_unit_hash_info (stash, each, stash->funcinfo_hash_table, | |
2702 | stash->varinfo_hash_table)) | |
2703 | { | |
2704 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
2705 | return FALSE; | |
2706 | } | |
2707 | each = each->prev_unit; | |
2708 | } | |
2709 | ||
2710 | stash->hash_units_head = stash->all_comp_units; | |
2711 | return TRUE; | |
2712 | } | |
2713 | ||
2714 | /* Check consistency of info hash tables. This is for debugging only. */ | |
2715 | ||
2716 | static void ATTRIBUTE_UNUSED | |
2717 | stash_verify_info_hash_table (struct dwarf2_debug *stash) | |
2718 | { | |
2719 | struct comp_unit *each_unit; | |
2720 | struct funcinfo *each_func; | |
2721 | struct varinfo *each_var; | |
2722 | struct info_list_node *node; | |
2723 | bfd_boolean found; | |
2724 | ||
2725 | for (each_unit = stash->all_comp_units; | |
2726 | each_unit; | |
2727 | each_unit = each_unit->next_unit) | |
2728 | { | |
2729 | for (each_func = each_unit->function_table; | |
2730 | each_func; | |
2731 | each_func = each_func->prev_func) | |
2732 | { | |
2733 | if (!each_func->name) | |
2734 | continue; | |
2735 | node = lookup_info_hash_table (stash->funcinfo_hash_table, | |
2736 | each_func->name); | |
2737 | BFD_ASSERT (node); | |
2738 | found = FALSE; | |
2739 | while (node && !found) | |
2740 | { | |
2741 | found = node->info == each_func; | |
2742 | node = node->next; | |
2743 | } | |
2744 | BFD_ASSERT (found); | |
2745 | } | |
2746 | ||
2747 | for (each_var = each_unit->variable_table; | |
2748 | each_var; | |
2749 | each_var = each_var->prev_var) | |
2750 | { | |
2751 | if (!each_var->name || !each_var->file || each_var->stack) | |
2752 | continue; | |
2753 | node = lookup_info_hash_table (stash->varinfo_hash_table, | |
2754 | each_var->name); | |
2755 | BFD_ASSERT (node); | |
2756 | found = FALSE; | |
2757 | while (node && !found) | |
2758 | { | |
2759 | found = node->info == each_var; | |
2760 | node = node->next; | |
2761 | } | |
2762 | BFD_ASSERT (found); | |
2763 | } | |
2764 | } | |
2765 | } | |
2766 | ||
2767 | /* Check to see if we want to enable the info hash tables, which consume | |
2768 | quite a bit of memory. Currently we only check the number times | |
2769 | bfd_dwarf2_find_line is called. In the future, we may also want to | |
2770 | take the number of symbols into account. */ | |
2771 | ||
2772 | static void | |
2773 | stash_maybe_enable_info_hash_tables (bfd *abfd, struct dwarf2_debug *stash) | |
2774 | { | |
2775 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_OFF); | |
2776 | ||
2777 | if (stash->info_hash_count++ < STASH_INFO_HASH_TRIGGER) | |
2778 | return; | |
2779 | ||
2780 | /* FIXME: Maybe we should check the reduce_memory_overheads | |
2781 | and optimize fields in the bfd_link_info structure ? */ | |
2782 | ||
2783 | /* Create hash tables. */ | |
2784 | stash->funcinfo_hash_table = create_info_hash_table (abfd); | |
2785 | stash->varinfo_hash_table = create_info_hash_table (abfd); | |
2786 | if (!stash->funcinfo_hash_table || !stash->varinfo_hash_table) | |
2787 | { | |
2788 | /* Turn off info hashes if any allocation above fails. */ | |
2789 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
2790 | return; | |
2791 | } | |
2792 | /* We need a forced update so that the info hash tables will | |
2793 | be created even though there is no compilation unit. That | |
2794 | happens if STASH_INFO_HASH_TRIGGER is 0. */ | |
2795 | stash_maybe_update_info_hash_tables (stash); | |
2796 | stash->info_hash_status = STASH_INFO_HASH_ON; | |
2797 | } | |
2798 | ||
2799 | /* Find the file and line associated with a symbol and address using the | |
2800 | info hash tables of a stash. If there is a match, the function returns | |
2801 | TRUE and update the locations pointed to by filename_ptr and linenumber_ptr; | |
2802 | otherwise it returns FALSE. */ | |
2803 | ||
2804 | static bfd_boolean | |
2805 | stash_find_line_fast (struct dwarf2_debug *stash, | |
2806 | asymbol *sym, | |
2807 | bfd_vma addr, | |
2808 | const char **filename_ptr, | |
2809 | unsigned int *linenumber_ptr) | |
2810 | { | |
2811 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_ON); | |
2812 | ||
2813 | if (sym->flags & BSF_FUNCTION) | |
2814 | return info_hash_lookup_funcinfo (stash->funcinfo_hash_table, sym, addr, | |
2815 | filename_ptr, linenumber_ptr); | |
2816 | return info_hash_lookup_varinfo (stash->varinfo_hash_table, sym, addr, | |
2817 | filename_ptr, linenumber_ptr); | |
2818 | } | |
2819 | ||
bec42b15 NC |
2820 | /* Find the source code location of SYMBOL. If SYMBOL is NULL |
2821 | then find the nearest source code location corresponding to | |
2822 | the address SECTION + OFFSET. | |
2823 | Returns TRUE if the line is found without error and fills in | |
2824 | FILENAME_PTR and LINENUMBER_PTR. In the case where SYMBOL was | |
2825 | NULL the FUNCTIONNAME_PTR is also filled in. | |
2826 | SYMBOLS contains the symbol table for ABFD. | |
2827 | ADDR_SIZE is the number of bytes in the initial .debug_info length | |
2828 | field and in the abbreviation offset, or zero to indicate that the | |
2829 | default value should be used. */ | |
252b5132 | 2830 | |
bec42b15 NC |
2831 | static bfd_boolean |
2832 | find_line (bfd *abfd, | |
2833 | asection *section, | |
2834 | bfd_vma offset, | |
2835 | asymbol *symbol, | |
2836 | asymbol **symbols, | |
2837 | const char **filename_ptr, | |
2838 | const char **functionname_ptr, | |
2839 | unsigned int *linenumber_ptr, | |
2840 | unsigned int addr_size, | |
2841 | void **pinfo) | |
252b5132 RH |
2842 | { |
2843 | /* Read each compilation unit from the section .debug_info, and check | |
2844 | to see if it contains the address we are searching for. If yes, | |
2845 | lookup the address, and return the line number info. If no, go | |
98591c73 | 2846 | on to the next compilation unit. |
252b5132 RH |
2847 | |
2848 | We keep a list of all the previously read compilation units, and | |
98591c73 | 2849 | a pointer to the next un-read compilation unit. Check the |
a092b084 | 2850 | previously read units before reading more. */ |
1ba54ee0 | 2851 | struct dwarf2_debug *stash; |
a092b084 | 2852 | /* What address are we looking for? */ |
1ba54ee0 | 2853 | bfd_vma addr; |
252b5132 | 2854 | struct comp_unit* each; |
d4c32a81 | 2855 | bfd_vma found = FALSE; |
bec42b15 | 2856 | bfd_boolean do_line; |
d4c32a81 | 2857 | |
1ba54ee0 | 2858 | stash = *pinfo; |
d4c32a81 L |
2859 | |
2860 | if (! stash) | |
2861 | { | |
2862 | bfd_size_type amt = sizeof (struct dwarf2_debug); | |
2863 | ||
2864 | stash = bfd_zalloc (abfd, amt); | |
2865 | if (! stash) | |
2866 | return FALSE; | |
2867 | } | |
2868 | ||
2869 | /* In a relocatable file, 2 functions may have the same address. | |
2870 | We change the section vma so that they won't overlap. */ | |
2871 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
2872 | { | |
2873 | if (! place_sections (abfd, stash)) | |
2874 | return FALSE; | |
2875 | } | |
2876 | ||
bec42b15 NC |
2877 | do_line = (section == NULL |
2878 | && offset == 0 | |
2879 | && functionname_ptr == NULL | |
2880 | && symbol != NULL); | |
2881 | if (do_line) | |
2882 | { | |
2883 | addr = symbol->value; | |
2884 | section = bfd_get_section (symbol); | |
2885 | } | |
2886 | else if (section != NULL | |
2887 | && functionname_ptr != NULL | |
2888 | && symbol == NULL) | |
2889 | addr = offset; | |
2890 | else | |
2891 | abort (); | |
2892 | ||
1ba54ee0 | 2893 | if (section->output_section) |
6dd55cb7 | 2894 | addr += section->output_section->vma + section->output_offset; |
1ba54ee0 | 2895 | else |
6dd55cb7 | 2896 | addr += section->vma; |
252b5132 | 2897 | *filename_ptr = NULL; |
6b33789f NC |
2898 | if (! do_line) |
2899 | *functionname_ptr = NULL; | |
252b5132 RH |
2900 | *linenumber_ptr = 0; |
2901 | ||
d4c32a81 | 2902 | if (! *pinfo) |
252b5132 | 2903 | { |
0d161102 | 2904 | bfd *debug_bfd; |
dc810e39 | 2905 | bfd_size_type total_size; |
252b5132 | 2906 | asection *msec; |
252b5132 | 2907 | |
818a27ac | 2908 | *pinfo = stash; |
3fde5a36 | 2909 | |
a092b084 | 2910 | msec = find_debug_info (abfd, NULL); |
0d161102 NC |
2911 | if (msec == NULL) |
2912 | { | |
0d4a1476 | 2913 | char * debug_filename = bfd_follow_gnu_debuglink (abfd, DEBUGDIR); |
0d161102 NC |
2914 | |
2915 | if (debug_filename == NULL) | |
2916 | /* No dwarf2 info, and no gnu_debuglink to follow. | |
2917 | Note that at this point the stash has been allocated, but | |
2918 | contains zeros. This lets future calls to this function | |
2919 | fail more quickly. */ | |
2920 | goto done; | |
2921 | ||
2922 | if ((debug_bfd = bfd_openr (debug_filename, NULL)) == NULL | |
2923 | || ! bfd_check_format (debug_bfd, bfd_object) | |
2924 | || (msec = find_debug_info (debug_bfd, NULL)) == NULL) | |
2925 | { | |
2926 | if (debug_bfd) | |
2927 | bfd_close (debug_bfd); | |
2928 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
2929 | free (debug_filename); | |
2930 | goto done; | |
2931 | } | |
2932 | } | |
2933 | else | |
2934 | debug_bfd = abfd; | |
a092b084 NC |
2935 | |
2936 | /* There can be more than one DWARF2 info section in a BFD these days. | |
e82ce529 | 2937 | Read them all in and produce one large stash. We do this in two |
a092b084 NC |
2938 | passes - in the first pass we just accumulate the section sizes. |
2939 | In the second pass we read in the section's contents. The allows | |
2940 | us to avoid reallocing the data as we add sections to the stash. */ | |
0d161102 | 2941 | for (total_size = 0; msec; msec = find_debug_info (debug_bfd, msec)) |
eea6121a | 2942 | total_size += msec->size; |
98591c73 | 2943 | |
0d161102 | 2944 | stash->info_ptr = bfd_alloc (debug_bfd, total_size); |
a092b084 | 2945 | if (stash->info_ptr == NULL) |
d4c32a81 | 2946 | goto done; |
252b5132 | 2947 | |
a092b084 NC |
2948 | stash->info_ptr_end = stash->info_ptr; |
2949 | ||
0d161102 | 2950 | for (msec = find_debug_info (debug_bfd, NULL); |
a092b084 | 2951 | msec; |
0d161102 | 2952 | msec = find_debug_info (debug_bfd, msec)) |
252b5132 | 2953 | { |
dc810e39 AM |
2954 | bfd_size_type size; |
2955 | bfd_size_type start; | |
a092b084 | 2956 | |
eea6121a | 2957 | size = msec->size; |
a092b084 NC |
2958 | if (size == 0) |
2959 | continue; | |
2960 | ||
2961 | start = stash->info_ptr_end - stash->info_ptr; | |
2962 | ||
6e84a906 | 2963 | if ((bfd_simple_get_relocated_section_contents |
0d161102 | 2964 | (debug_bfd, msec, stash->info_ptr + start, symbols)) == NULL) |
a092b084 NC |
2965 | continue; |
2966 | ||
2967 | stash->info_ptr_end = stash->info_ptr + start + size; | |
252b5132 RH |
2968 | } |
2969 | ||
f2363ce5 AO |
2970 | BFD_ASSERT (stash->info_ptr_end == stash->info_ptr + total_size); |
2971 | ||
0d161102 | 2972 | stash->sec = find_debug_info (debug_bfd, NULL); |
f2363ce5 AO |
2973 | stash->sec_info_ptr = stash->info_ptr; |
2974 | stash->syms = symbols; | |
0d161102 | 2975 | stash->bfd = debug_bfd; |
252b5132 | 2976 | } |
a092b084 | 2977 | |
98591c73 | 2978 | /* A null info_ptr indicates that there is no dwarf2 info |
a092b084 | 2979 | (or that an error occured while setting up the stash). */ |
252b5132 | 2980 | if (! stash->info_ptr) |
d4c32a81 | 2981 | goto done; |
252b5132 | 2982 | |
4ab527b0 FF |
2983 | stash->inliner_chain = NULL; |
2984 | ||
a092b084 | 2985 | /* Check the previously read comp. units first. */ |
bd210d54 NC |
2986 | if (do_line) |
2987 | { | |
2988 | /* The info hash tables use quite a bit of memory. We may not want to | |
2989 | always use them. We use some heuristics to decide if and when to | |
2990 | turn it on. */ | |
2991 | if (stash->info_hash_status == STASH_INFO_HASH_OFF) | |
2992 | stash_maybe_enable_info_hash_tables (abfd, stash); | |
2993 | ||
2994 | /* Keep info hash table up to date if they are available. Note that we | |
2995 | may disable the hash tables if there is any error duing update. */ | |
2996 | if (stash->info_hash_status == STASH_INFO_HASH_ON) | |
2997 | stash_maybe_update_info_hash_tables (stash); | |
2998 | ||
2999 | if (stash->info_hash_status == STASH_INFO_HASH_ON) | |
3000 | { | |
3001 | found = stash_find_line_fast (stash, symbol, addr, filename_ptr, | |
3002 | linenumber_ptr); | |
3003 | if (found) | |
3004 | goto done; | |
3005 | } | |
0d161102 | 3006 | else |
bd210d54 NC |
3007 | { |
3008 | /* Check the previously read comp. units first. */ | |
3009 | for (each = stash->all_comp_units; each; each = each->next_unit) | |
3010 | if ((symbol->flags & BSF_FUNCTION) == 0 | |
3011 | || comp_unit_contains_address (each, addr)) | |
3012 | { | |
3013 | found = comp_unit_find_line (each, symbol, addr, filename_ptr, | |
3014 | linenumber_ptr, stash); | |
3015 | if (found) | |
3016 | goto done; | |
3017 | } | |
3018 | } | |
3019 | } | |
3020 | else | |
3021 | { | |
709d67f1 AM |
3022 | for (each = stash->all_comp_units; each; each = each->next_unit) |
3023 | { | |
3024 | found = (comp_unit_contains_address (each, addr) | |
3025 | && comp_unit_find_nearest_line (each, addr, | |
3026 | filename_ptr, | |
3027 | functionname_ptr, | |
3028 | linenumber_ptr, | |
3029 | stash)); | |
3030 | if (found) | |
3031 | goto done; | |
3032 | } | |
5420f73d L |
3033 | } |
3034 | ||
5420f73d L |
3035 | /* The DWARF2 spec says that the initial length field, and the |
3036 | offset of the abbreviation table, should both be 4-byte values. | |
3037 | However, some compilers do things differently. */ | |
3038 | if (addr_size == 0) | |
3039 | addr_size = 4; | |
3040 | BFD_ASSERT (addr_size == 4 || addr_size == 8); | |
3041 | ||
3042 | /* Read each remaining comp. units checking each as they are read. */ | |
3043 | while (stash->info_ptr < stash->info_ptr_end) | |
3044 | { | |
3045 | bfd_vma length; | |
3046 | unsigned int offset_size = addr_size; | |
3047 | bfd_byte *info_ptr_unit = stash->info_ptr; | |
3048 | ||
0d161102 | 3049 | length = read_4_bytes (stash->bfd, stash->info_ptr); |
bec42b15 NC |
3050 | /* A 0xffffff length is the DWARF3 way of indicating |
3051 | we use 64-bit offsets, instead of 32-bit offsets. */ | |
5420f73d L |
3052 | if (length == 0xffffffff) |
3053 | { | |
3054 | offset_size = 8; | |
0d161102 | 3055 | length = read_8_bytes (stash->bfd, stash->info_ptr + 4); |
5420f73d L |
3056 | stash->info_ptr += 12; |
3057 | } | |
3058 | /* A zero length is the IRIX way of indicating 64-bit offsets, | |
3059 | mostly because the 64-bit length will generally fit in 32 | |
3060 | bits, and the endianness helps. */ | |
3061 | else if (length == 0) | |
3062 | { | |
3063 | offset_size = 8; | |
0d161102 | 3064 | length = read_4_bytes (stash->bfd, stash->info_ptr + 4); |
5420f73d L |
3065 | stash->info_ptr += 8; |
3066 | } | |
024b2372 CD |
3067 | /* In the absence of the hints above, we assume 32-bit DWARF2 |
3068 | offsets even for targets with 64-bit addresses, because: | |
3069 | a) most of the time these targets will not have generated | |
3070 | more than 2Gb of debug info and so will not need 64-bit | |
3071 | offsets, | |
3072 | and | |
3073 | b) if they do use 64-bit offsets but they are not using | |
3074 | the size hints that are tested for above then they are | |
3075 | not conforming to the DWARF3 standard anyway. */ | |
5420f73d L |
3076 | else if (addr_size == 8) |
3077 | { | |
024b2372 CD |
3078 | offset_size = 4; |
3079 | stash->info_ptr += 4; | |
5420f73d L |
3080 | } |
3081 | else | |
3082 | stash->info_ptr += 4; | |
3083 | ||
3084 | if (length > 0) | |
3085 | { | |
0d161102 | 3086 | each = parse_comp_unit (stash, length, info_ptr_unit, |
5420f73d | 3087 | offset_size); |
d74e4b29 NS |
3088 | if (!each) |
3089 | /* The dwarf information is damaged, don't trust it any | |
3090 | more. */ | |
3091 | break; | |
5420f73d L |
3092 | stash->info_ptr += length; |
3093 | ||
3094 | if ((bfd_vma) (stash->info_ptr - stash->sec_info_ptr) | |
3095 | == stash->sec->size) | |
3096 | { | |
0d161102 | 3097 | stash->sec = find_debug_info (stash->bfd, stash->sec); |
5420f73d L |
3098 | stash->sec_info_ptr = stash->info_ptr; |
3099 | } | |
3100 | ||
d74e4b29 NS |
3101 | if (stash->all_comp_units) |
3102 | stash->all_comp_units->prev_unit = each; | |
3103 | else | |
3104 | stash->last_comp_unit = each; | |
3105 | ||
3106 | each->next_unit = stash->all_comp_units; | |
3107 | stash->all_comp_units = each; | |
3108 | ||
3109 | /* DW_AT_low_pc and DW_AT_high_pc are optional for | |
3110 | compilation units. If we don't have them (i.e., | |
3111 | unit->high == 0), we need to consult the line info table | |
3112 | to see if a compilation unit contains the given | |
3113 | address. */ | |
3114 | if (do_line) | |
3115 | found = (((symbol->flags & BSF_FUNCTION) == 0 | |
3116 | || each->arange.high == 0 | |
3117 | || comp_unit_contains_address (each, addr)) | |
3118 | && comp_unit_find_line (each, symbol, addr, | |
3119 | filename_ptr, | |
3120 | linenumber_ptr, | |
3121 | stash)); | |
3122 | else | |
3123 | found = ((each->arange.high == 0 | |
3124 | || comp_unit_contains_address (each, addr)) | |
3125 | && comp_unit_find_nearest_line (each, addr, | |
3126 | filename_ptr, | |
3127 | functionname_ptr, | |
3128 | linenumber_ptr, | |
3129 | stash)); | |
3130 | if (found) | |
3131 | goto done; | |
5420f73d L |
3132 | } |
3133 | } | |
3134 | ||
d4c32a81 L |
3135 | done: |
3136 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
3137 | unset_sections (stash); | |
3138 | ||
3139 | return found; | |
5420f73d L |
3140 | } |
3141 | ||
bec42b15 NC |
3142 | /* The DWARF2 version of find_nearest_line. |
3143 | Return TRUE if the line is found without error. */ | |
3144 | ||
3145 | bfd_boolean | |
3146 | _bfd_dwarf2_find_nearest_line (bfd *abfd, | |
3147 | asection *section, | |
3148 | asymbol **symbols, | |
3149 | bfd_vma offset, | |
3150 | const char **filename_ptr, | |
3151 | const char **functionname_ptr, | |
3152 | unsigned int *linenumber_ptr, | |
3153 | unsigned int addr_size, | |
3154 | void **pinfo) | |
3155 | { | |
3156 | return find_line (abfd, section, offset, NULL, symbols, filename_ptr, | |
3157 | functionname_ptr, linenumber_ptr, addr_size, | |
3158 | pinfo); | |
3159 | } | |
3160 | ||
3161 | /* The DWARF2 version of find_line. | |
3162 | Return TRUE if the line is found without error. */ | |
3163 | ||
3164 | bfd_boolean | |
3165 | _bfd_dwarf2_find_line (bfd *abfd, | |
3166 | asymbol **symbols, | |
3167 | asymbol *symbol, | |
3168 | const char **filename_ptr, | |
3169 | unsigned int *linenumber_ptr, | |
3170 | unsigned int addr_size, | |
3171 | void **pinfo) | |
3172 | { | |
3173 | return find_line (abfd, NULL, 0, symbol, symbols, filename_ptr, | |
3174 | NULL, linenumber_ptr, addr_size, | |
3175 | pinfo); | |
3176 | } | |
3177 | ||
4ab527b0 FF |
3178 | bfd_boolean |
3179 | _bfd_dwarf2_find_inliner_info (bfd *abfd ATTRIBUTE_UNUSED, | |
3180 | const char **filename_ptr, | |
3181 | const char **functionname_ptr, | |
3182 | unsigned int *linenumber_ptr, | |
3183 | void **pinfo) | |
3184 | { | |
3185 | struct dwarf2_debug *stash; | |
3186 | ||
3187 | stash = *pinfo; | |
3188 | if (stash) | |
3189 | { | |
3190 | struct funcinfo *func = stash->inliner_chain; | |
bec42b15 | 3191 | |
4ab527b0 FF |
3192 | if (func && func->caller_func) |
3193 | { | |
3194 | *filename_ptr = func->caller_file; | |
3195 | *functionname_ptr = func->caller_func->name; | |
3196 | *linenumber_ptr = func->caller_line; | |
3197 | stash->inliner_chain = func->caller_func; | |
bec42b15 | 3198 | return TRUE; |
4ab527b0 FF |
3199 | } |
3200 | } | |
3201 | ||
bec42b15 | 3202 | return FALSE; |
4ab527b0 FF |
3203 | } |
3204 | ||
35330cce NC |
3205 | void |
3206 | _bfd_dwarf2_cleanup_debug_info (bfd *abfd) | |
3207 | { | |
3208 | struct comp_unit *each; | |
3209 | struct dwarf2_debug *stash; | |
3210 | ||
3211 | if (abfd == NULL || elf_tdata (abfd) == NULL) | |
3212 | return; | |
3213 | ||
3214 | stash = elf_tdata (abfd)->dwarf2_find_line_info; | |
3215 | ||
3216 | if (stash == NULL) | |
3217 | return; | |
3218 | ||
3219 | for (each = stash->all_comp_units; each; each = each->next_unit) | |
3220 | { | |
b42bf1e0 NC |
3221 | struct funcinfo * function_table = each->function_table; |
3222 | struct varinfo * variable_table = each->variable_table; | |
35330cce | 3223 | |
b42bf1e0 | 3224 | if (each->abbrevs != NULL) |
d8d1c398 | 3225 | { |
b42bf1e0 | 3226 | size_t i; |
35330cce | 3227 | |
b42bf1e0 | 3228 | for (i = 0; i < ABBREV_HASH_SIZE; i++) |
d8d1c398 | 3229 | { |
b42bf1e0 NC |
3230 | struct abbrev_info *abbrev = each->abbrevs[i]; |
3231 | ||
3232 | while (abbrev) | |
3233 | { | |
3234 | struct abbrev_info * a = abbrev; | |
3235 | ||
3236 | abbrev = a->next; | |
3237 | if (a->attrs) | |
3238 | free (a->attrs); | |
3239 | free (a); | |
3240 | } | |
d8d1c398 | 3241 | } |
b42bf1e0 NC |
3242 | |
3243 | free (each->abbrevs); | |
3244 | each->abbrevs = NULL; | |
d8d1c398 | 3245 | } |
35330cce NC |
3246 | |
3247 | if (each->line_table) | |
d8d1c398 | 3248 | { |
b42bf1e0 NC |
3249 | /* FIXME: We should free the line_info structures as well. */ |
3250 | if (each->line_table->dirs) | |
3251 | free (each->line_table->dirs); | |
3252 | ||
3253 | if (each->line_table->files) | |
3254 | free (each->line_table->files); | |
3255 | ||
3256 | free (each->line_table); | |
3257 | each->line_table = NULL; | |
d8d1c398 | 3258 | } |
b42bf1e0 NC |
3259 | |
3260 | while (function_table) | |
3261 | { | |
3262 | struct funcinfo * f = function_table; | |
3263 | ||
3264 | function_table = f->prev_func; | |
3265 | ||
3266 | if (f->file) | |
3267 | free (f->file); | |
3268 | ||
3269 | if (f->caller_file) | |
3270 | free (f->caller_file); | |
3271 | ||
3272 | free (f); | |
3273 | } | |
3274 | ||
3275 | each->function_table = NULL; | |
3276 | ||
3277 | while (variable_table) | |
3278 | { | |
3279 | struct varinfo * v = variable_table; | |
3280 | ||
3281 | variable_table = variable_table->prev_var; | |
3282 | ||
3283 | if (v->file) | |
3284 | free (v->file); | |
3285 | ||
3286 | free (v); | |
3287 | } | |
3288 | ||
3289 | each->variable_table = NULL; | |
35330cce NC |
3290 | } |
3291 | ||
3292 | free (stash->dwarf_abbrev_buffer); | |
3293 | free (stash->dwarf_line_buffer); | |
3294 | free (stash->dwarf_ranges_buffer); | |
3295 | } |