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. */ |
3076cd1f | 114 | bfd_size_type 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. */ | |
3076cd1f | 120 | bfd_size_type 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. */ | |
3076cd1f | 126 | bfd_size_type 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. */ | |
3076cd1f | 132 | bfd_size_type 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 | ||
1b315056 CS |
392 | /* Read a section into its appropriate place in the dwarf2_debug |
393 | struct (indicated by SECTION_BUFFER and SECTION_SIZE). If syms is | |
394 | not NULL, use bfd_simple_get_relocated_section_contents to read the | |
395 | section contents, otherwise use bfd_get_section_contents. */ | |
396 | ||
397 | static bfd_boolean | |
398 | read_section (bfd *abfd, | |
399 | const char* section_name, const char* compressed_section_name, | |
400 | asymbol** syms, bfd_uint64_t offset, | |
3076cd1f | 401 | bfd_byte **section_buffer, bfd_size_type *section_size) |
1b315056 CS |
402 | { |
403 | asection *msec; | |
404 | bfd_boolean section_is_compressed = FALSE; | |
405 | ||
406 | /* read_section is a noop if the section has already been read. */ | |
407 | if (*section_buffer) | |
408 | return TRUE; | |
409 | ||
410 | msec = bfd_get_section_by_name (abfd, section_name); | |
411 | if (! msec && compressed_section_name) | |
412 | { | |
413 | msec = bfd_get_section_by_name (abfd, compressed_section_name); | |
414 | section_is_compressed = TRUE; | |
415 | } | |
416 | if (! msec) | |
417 | { | |
418 | (*_bfd_error_handler) (_("Dwarf Error: Can't find %s section."), section_name); | |
419 | bfd_set_error (bfd_error_bad_value); | |
420 | return FALSE; | |
421 | } | |
422 | ||
423 | if (syms) | |
424 | { | |
425 | *section_size = msec->size; | |
426 | *section_buffer | |
427 | = bfd_simple_get_relocated_section_contents (abfd, msec, NULL, syms); | |
428 | if (! *section_buffer) | |
429 | return FALSE; | |
430 | } | |
431 | else | |
432 | { | |
433 | *section_size = msec->rawsize ? msec->rawsize : msec->size; | |
434 | *section_buffer = bfd_malloc (*section_size); | |
435 | if (! *section_buffer) | |
436 | return FALSE; | |
437 | if (! bfd_get_section_contents (abfd, msec, *section_buffer, | |
438 | 0, *section_size)) | |
439 | return FALSE; | |
440 | } | |
441 | ||
442 | if (section_is_compressed) | |
443 | { | |
444 | if (! bfd_uncompress_section_contents (section_buffer, section_size)) | |
445 | { | |
446 | (*_bfd_error_handler) (_("Dwarf Error: unable to decompress %s section."), compressed_section_name); | |
447 | bfd_set_error (bfd_error_bad_value); | |
448 | return FALSE; | |
449 | } | |
450 | } | |
451 | ||
452 | /* It is possible to get a bad value for the offset into the section | |
453 | * that the client wants. Validate it here to avoid trouble later. */ | |
454 | if (offset != 0 && offset >= *section_size) | |
455 | { | |
456 | (*_bfd_error_handler) (_("Dwarf Error: Offset (%lu) greater than or equal to %s size (%lu)."), | |
457 | offset, section_name, *section_size); | |
458 | bfd_set_error (bfd_error_bad_value); | |
459 | return FALSE; | |
460 | } | |
461 | ||
462 | return TRUE; | |
463 | } | |
464 | ||
98591c73 KH |
465 | /* VERBATIM |
466 | The following function up to the END VERBATIM mark are | |
a092b084 | 467 | copied directly from dwarf2read.c. */ |
252b5132 | 468 | |
a092b084 | 469 | /* Read dwarf information from a buffer. */ |
252b5132 RH |
470 | |
471 | static unsigned int | |
f075ee0c | 472 | read_1_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf) |
252b5132 | 473 | { |
818a27ac | 474 | return bfd_get_8 (abfd, buf); |
252b5132 RH |
475 | } |
476 | ||
477 | static int | |
f075ee0c | 478 | read_1_signed_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf) |
252b5132 | 479 | { |
818a27ac | 480 | return bfd_get_signed_8 (abfd, buf); |
252b5132 RH |
481 | } |
482 | ||
483 | static unsigned int | |
f075ee0c | 484 | read_2_bytes (bfd *abfd, bfd_byte *buf) |
252b5132 | 485 | { |
818a27ac | 486 | return bfd_get_16 (abfd, buf); |
252b5132 RH |
487 | } |
488 | ||
252b5132 | 489 | static unsigned int |
f075ee0c | 490 | read_4_bytes (bfd *abfd, bfd_byte *buf) |
252b5132 | 491 | { |
818a27ac | 492 | return bfd_get_32 (abfd, buf); |
252b5132 RH |
493 | } |
494 | ||
8ce8c090 | 495 | static bfd_uint64_t |
f075ee0c | 496 | read_8_bytes (bfd *abfd, bfd_byte *buf) |
252b5132 | 497 | { |
818a27ac | 498 | return bfd_get_64 (abfd, buf); |
252b5132 RH |
499 | } |
500 | ||
f075ee0c | 501 | static bfd_byte * |
818a27ac | 502 | read_n_bytes (bfd *abfd ATTRIBUTE_UNUSED, |
f075ee0c | 503 | bfd_byte *buf, |
818a27ac | 504 | unsigned int size ATTRIBUTE_UNUSED) |
252b5132 RH |
505 | { |
506 | /* If the size of a host char is 8 bits, we can return a pointer | |
507 | to the buffer, otherwise we have to copy the data to a buffer | |
508 | allocated on the temporary obstack. */ | |
509 | return buf; | |
510 | } | |
511 | ||
512 | static char * | |
818a27ac | 513 | read_string (bfd *abfd ATTRIBUTE_UNUSED, |
f075ee0c | 514 | bfd_byte *buf, |
818a27ac | 515 | unsigned int *bytes_read_ptr) |
252b5132 | 516 | { |
d03ba2a1 | 517 | /* Return a pointer to the embedded string. */ |
f075ee0c AM |
518 | char *str = (char *) buf; |
519 | if (*str == '\0') | |
252b5132 RH |
520 | { |
521 | *bytes_read_ptr = 1; | |
522 | return NULL; | |
523 | } | |
98591c73 | 524 | |
f075ee0c AM |
525 | *bytes_read_ptr = strlen (str) + 1; |
526 | return str; | |
252b5132 RH |
527 | } |
528 | ||
d03ba2a1 | 529 | static char * |
818a27ac | 530 | read_indirect_string (struct comp_unit* unit, |
f075ee0c | 531 | bfd_byte *buf, |
818a27ac | 532 | unsigned int *bytes_read_ptr) |
d03ba2a1 | 533 | { |
8ce8c090 | 534 | bfd_uint64_t offset; |
d03ba2a1 | 535 | struct dwarf2_debug *stash = unit->stash; |
f075ee0c | 536 | char *str; |
d03ba2a1 JJ |
537 | |
538 | if (unit->offset_size == 4) | |
539 | offset = read_4_bytes (unit->abfd, buf); | |
540 | else | |
541 | offset = read_8_bytes (unit->abfd, buf); | |
542 | *bytes_read_ptr = unit->offset_size; | |
543 | ||
1b315056 CS |
544 | if (! read_section (unit->abfd, ".debug_str", ".zdebug_str", |
545 | 0, offset, | |
546 | &stash->dwarf_str_buffer, &stash->dwarf_str_size)) | |
547 | return 0; | |
d03ba2a1 | 548 | |
f075ee0c AM |
549 | str = (char *) stash->dwarf_str_buffer + offset; |
550 | if (*str == '\0') | |
d03ba2a1 | 551 | return NULL; |
f075ee0c | 552 | return str; |
d03ba2a1 JJ |
553 | } |
554 | ||
252b5132 RH |
555 | /* END VERBATIM */ |
556 | ||
8ce8c090 | 557 | static bfd_uint64_t |
f075ee0c | 558 | read_address (struct comp_unit *unit, bfd_byte *buf) |
252b5132 | 559 | { |
0af4cd7c PK |
560 | int signed_vma = get_elf_backend_data (unit->abfd)->sign_extend_vma; |
561 | ||
562 | if (signed_vma) | |
563 | { | |
564 | switch (unit->addr_size) | |
565 | { | |
566 | case 8: | |
567 | return bfd_get_signed_64 (unit->abfd, buf); | |
568 | case 4: | |
569 | return bfd_get_signed_32 (unit->abfd, buf); | |
570 | case 2: | |
571 | return bfd_get_signed_16 (unit->abfd, buf); | |
572 | default: | |
573 | abort (); | |
574 | } | |
575 | } | |
576 | else | |
252b5132 | 577 | { |
0af4cd7c PK |
578 | switch (unit->addr_size) |
579 | { | |
580 | case 8: | |
581 | return bfd_get_64 (unit->abfd, buf); | |
582 | case 4: | |
583 | return bfd_get_32 (unit->abfd, buf); | |
584 | case 2: | |
585 | return bfd_get_16 (unit->abfd, buf); | |
586 | default: | |
587 | abort (); | |
588 | } | |
252b5132 | 589 | } |
252b5132 RH |
590 | } |
591 | ||
252b5132 RH |
592 | /* Lookup an abbrev_info structure in the abbrev hash table. */ |
593 | ||
594 | static struct abbrev_info * | |
818a27ac | 595 | lookup_abbrev (unsigned int number, struct abbrev_info **abbrevs) |
252b5132 RH |
596 | { |
597 | unsigned int hash_number; | |
598 | struct abbrev_info *abbrev; | |
599 | ||
600 | hash_number = number % ABBREV_HASH_SIZE; | |
601 | abbrev = abbrevs[hash_number]; | |
602 | ||
603 | while (abbrev) | |
604 | { | |
605 | if (abbrev->number == number) | |
606 | return abbrev; | |
607 | else | |
608 | abbrev = abbrev->next; | |
609 | } | |
98591c73 | 610 | |
252b5132 RH |
611 | return NULL; |
612 | } | |
613 | ||
614 | /* In DWARF version 2, the description of the debugging information is | |
615 | stored in a separate .debug_abbrev section. Before we read any | |
616 | dies from a section we read in all abbreviations and install them | |
617 | in a hash table. */ | |
618 | ||
619 | static struct abbrev_info** | |
8ce8c090 | 620 | read_abbrevs (bfd *abfd, bfd_uint64_t offset, struct dwarf2_debug *stash) |
252b5132 RH |
621 | { |
622 | struct abbrev_info **abbrevs; | |
f075ee0c | 623 | bfd_byte *abbrev_ptr; |
252b5132 RH |
624 | struct abbrev_info *cur_abbrev; |
625 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
626 | unsigned int abbrev_form, hash_number; | |
dc810e39 | 627 | bfd_size_type amt; |
252b5132 | 628 | |
1b315056 CS |
629 | if (! read_section (abfd, ".debug_abbrev", ".zdebug_abbrev", |
630 | stash->syms, offset, | |
631 | &stash->dwarf_abbrev_buffer, &stash->dwarf_abbrev_size)) | |
632 | return 0; | |
252b5132 | 633 | |
dc810e39 | 634 | amt = sizeof (struct abbrev_info*) * ABBREV_HASH_SIZE; |
818a27ac | 635 | abbrevs = bfd_zalloc (abfd, amt); |
252b5132 RH |
636 | |
637 | abbrev_ptr = stash->dwarf_abbrev_buffer + offset; | |
638 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
639 | abbrev_ptr += bytes_read; | |
640 | ||
a092b084 | 641 | /* Loop until we reach an abbrev number of 0. */ |
252b5132 RH |
642 | while (abbrev_number) |
643 | { | |
dc810e39 | 644 | amt = sizeof (struct abbrev_info); |
818a27ac | 645 | cur_abbrev = bfd_zalloc (abfd, amt); |
252b5132 | 646 | |
a092b084 | 647 | /* Read in abbrev header. */ |
252b5132 | 648 | cur_abbrev->number = abbrev_number; |
d45913a0 DA |
649 | cur_abbrev->tag = (enum dwarf_tag) |
650 | read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
252b5132 RH |
651 | abbrev_ptr += bytes_read; |
652 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
653 | abbrev_ptr += 1; | |
654 | ||
a092b084 | 655 | /* Now read in declarations. */ |
252b5132 RH |
656 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
657 | abbrev_ptr += bytes_read; | |
658 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
659 | abbrev_ptr += bytes_read; | |
98591c73 | 660 | |
252b5132 RH |
661 | while (abbrev_name) |
662 | { | |
663 | if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0) | |
664 | { | |
35330cce NC |
665 | struct attr_abbrev *tmp; |
666 | ||
dc810e39 AM |
667 | amt = cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK; |
668 | amt *= sizeof (struct attr_abbrev); | |
35330cce NC |
669 | tmp = bfd_realloc (cur_abbrev->attrs, amt); |
670 | if (tmp == NULL) | |
d8d1c398 AM |
671 | { |
672 | size_t i; | |
673 | ||
674 | for (i = 0; i < ABBREV_HASH_SIZE; i++) | |
675 | { | |
676 | struct abbrev_info *abbrev = abbrevs[i]; | |
677 | ||
678 | while (abbrev) | |
679 | { | |
34b5e0b2 NC |
680 | free (abbrev->attrs); |
681 | abbrev = abbrev->next; | |
d8d1c398 AM |
682 | } |
683 | } | |
684 | return NULL; | |
685 | } | |
35330cce | 686 | cur_abbrev->attrs = tmp; |
252b5132 | 687 | } |
98591c73 | 688 | |
d45913a0 DA |
689 | cur_abbrev->attrs[cur_abbrev->num_attrs].name |
690 | = (enum dwarf_attribute) abbrev_name; | |
691 | cur_abbrev->attrs[cur_abbrev->num_attrs++].form | |
692 | = (enum dwarf_form) abbrev_form; | |
252b5132 RH |
693 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
694 | abbrev_ptr += bytes_read; | |
695 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
696 | abbrev_ptr += bytes_read; | |
697 | } | |
698 | ||
699 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
700 | cur_abbrev->next = abbrevs[hash_number]; | |
701 | abbrevs[hash_number] = cur_abbrev; | |
702 | ||
703 | /* Get next abbreviation. | |
e82ce529 | 704 | Under Irix6 the abbreviations for a compilation unit are not |
252b5132 RH |
705 | always properly terminated with an abbrev number of 0. |
706 | Exit loop if we encounter an abbreviation which we have | |
707 | already read (which means we are about to read the abbreviations | |
708 | for the next compile unit) or if the end of the abbreviation | |
709 | table is reached. */ | |
710 | if ((unsigned int) (abbrev_ptr - stash->dwarf_abbrev_buffer) | |
d8d1c398 | 711 | >= stash->dwarf_abbrev_size) |
252b5132 RH |
712 | break; |
713 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
714 | abbrev_ptr += bytes_read; | |
715 | if (lookup_abbrev (abbrev_number,abbrevs) != NULL) | |
716 | break; | |
717 | } | |
718 | ||
719 | return abbrevs; | |
720 | } | |
721 | ||
cf716c56 | 722 | /* Read an attribute value described by an attribute form. */ |
252b5132 | 723 | |
f075ee0c | 724 | static bfd_byte * |
818a27ac AM |
725 | read_attribute_value (struct attribute *attr, |
726 | unsigned form, | |
727 | struct comp_unit *unit, | |
f075ee0c | 728 | bfd_byte *info_ptr) |
252b5132 RH |
729 | { |
730 | bfd *abfd = unit->abfd; | |
731 | unsigned int bytes_read; | |
732 | struct dwarf_block *blk; | |
dc810e39 | 733 | bfd_size_type amt; |
252b5132 | 734 | |
d45913a0 | 735 | attr->form = (enum dwarf_form) form; |
98591c73 | 736 | |
cf716c56 | 737 | switch (form) |
252b5132 RH |
738 | { |
739 | case DW_FORM_addr: | |
0cc1cf99 | 740 | /* FIXME: DWARF3 draft says DW_FORM_ref_addr is offset_size. */ |
252b5132 | 741 | case DW_FORM_ref_addr: |
482e2e37 | 742 | attr->u.val = read_address (unit, info_ptr); |
252b5132 RH |
743 | info_ptr += unit->addr_size; |
744 | break; | |
745 | case DW_FORM_block2: | |
dc810e39 | 746 | amt = sizeof (struct dwarf_block); |
818a27ac | 747 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
748 | blk->size = read_2_bytes (abfd, info_ptr); |
749 | info_ptr += 2; | |
750 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
751 | info_ptr += blk->size; | |
482e2e37 | 752 | attr->u.blk = blk; |
252b5132 RH |
753 | break; |
754 | case DW_FORM_block4: | |
dc810e39 | 755 | amt = sizeof (struct dwarf_block); |
818a27ac | 756 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
757 | blk->size = read_4_bytes (abfd, info_ptr); |
758 | info_ptr += 4; | |
759 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
760 | info_ptr += blk->size; | |
482e2e37 | 761 | attr->u.blk = blk; |
252b5132 RH |
762 | break; |
763 | case DW_FORM_data2: | |
482e2e37 | 764 | attr->u.val = read_2_bytes (abfd, info_ptr); |
252b5132 RH |
765 | info_ptr += 2; |
766 | break; | |
767 | case DW_FORM_data4: | |
482e2e37 | 768 | attr->u.val = read_4_bytes (abfd, info_ptr); |
252b5132 RH |
769 | info_ptr += 4; |
770 | break; | |
771 | case DW_FORM_data8: | |
482e2e37 | 772 | attr->u.val = read_8_bytes (abfd, info_ptr); |
252b5132 RH |
773 | info_ptr += 8; |
774 | break; | |
775 | case DW_FORM_string: | |
482e2e37 | 776 | attr->u.str = read_string (abfd, info_ptr, &bytes_read); |
252b5132 RH |
777 | info_ptr += bytes_read; |
778 | break; | |
d03ba2a1 | 779 | case DW_FORM_strp: |
482e2e37 | 780 | attr->u.str = read_indirect_string (unit, info_ptr, &bytes_read); |
d03ba2a1 JJ |
781 | info_ptr += bytes_read; |
782 | break; | |
252b5132 | 783 | case DW_FORM_block: |
dc810e39 | 784 | amt = sizeof (struct dwarf_block); |
818a27ac | 785 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
786 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
787 | info_ptr += bytes_read; | |
788 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
789 | info_ptr += blk->size; | |
482e2e37 | 790 | attr->u.blk = blk; |
252b5132 RH |
791 | break; |
792 | case DW_FORM_block1: | |
dc810e39 | 793 | amt = sizeof (struct dwarf_block); |
818a27ac | 794 | blk = bfd_alloc (abfd, amt); |
252b5132 RH |
795 | blk->size = read_1_byte (abfd, info_ptr); |
796 | info_ptr += 1; | |
797 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
798 | info_ptr += blk->size; | |
482e2e37 | 799 | attr->u.blk = blk; |
252b5132 RH |
800 | break; |
801 | case DW_FORM_data1: | |
482e2e37 | 802 | attr->u.val = read_1_byte (abfd, info_ptr); |
252b5132 RH |
803 | info_ptr += 1; |
804 | break; | |
805 | case DW_FORM_flag: | |
482e2e37 | 806 | attr->u.val = read_1_byte (abfd, info_ptr); |
252b5132 RH |
807 | info_ptr += 1; |
808 | break; | |
809 | case DW_FORM_sdata: | |
482e2e37 | 810 | attr->u.sval = read_signed_leb128 (abfd, info_ptr, &bytes_read); |
252b5132 RH |
811 | info_ptr += bytes_read; |
812 | break; | |
813 | case DW_FORM_udata: | |
482e2e37 | 814 | attr->u.val = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
252b5132 RH |
815 | info_ptr += bytes_read; |
816 | break; | |
817 | case DW_FORM_ref1: | |
482e2e37 | 818 | attr->u.val = read_1_byte (abfd, info_ptr); |
252b5132 RH |
819 | info_ptr += 1; |
820 | break; | |
821 | case DW_FORM_ref2: | |
482e2e37 | 822 | attr->u.val = read_2_bytes (abfd, info_ptr); |
252b5132 RH |
823 | info_ptr += 2; |
824 | break; | |
825 | case DW_FORM_ref4: | |
482e2e37 | 826 | attr->u.val = read_4_bytes (abfd, info_ptr); |
252b5132 RH |
827 | info_ptr += 4; |
828 | break; | |
81edd86d | 829 | case DW_FORM_ref8: |
482e2e37 | 830 | attr->u.val = read_8_bytes (abfd, info_ptr); |
81edd86d MM |
831 | info_ptr += 8; |
832 | break; | |
252b5132 | 833 | case DW_FORM_ref_udata: |
482e2e37 | 834 | attr->u.val = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
252b5132 RH |
835 | info_ptr += bytes_read; |
836 | break; | |
252b5132 | 837 | case DW_FORM_indirect: |
cf716c56 RH |
838 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
839 | info_ptr += bytes_read; | |
840 | info_ptr = read_attribute_value (attr, form, unit, info_ptr); | |
841 | break; | |
252b5132 | 842 | default: |
f46c2da6 | 843 | (*_bfd_error_handler) (_("Dwarf Error: Invalid or unhandled FORM value: %u."), |
cf716c56 | 844 | form); |
252b5132 RH |
845 | bfd_set_error (bfd_error_bad_value); |
846 | } | |
847 | return info_ptr; | |
848 | } | |
849 | ||
cf716c56 RH |
850 | /* Read an attribute described by an abbreviated attribute. */ |
851 | ||
f075ee0c | 852 | static bfd_byte * |
818a27ac AM |
853 | read_attribute (struct attribute *attr, |
854 | struct attr_abbrev *abbrev, | |
855 | struct comp_unit *unit, | |
f075ee0c | 856 | bfd_byte *info_ptr) |
cf716c56 RH |
857 | { |
858 | attr->name = abbrev->name; | |
859 | info_ptr = read_attribute_value (attr, abbrev->form, unit, info_ptr); | |
860 | return info_ptr; | |
861 | } | |
862 | ||
a092b084 | 863 | /* Source line information table routines. */ |
252b5132 RH |
864 | |
865 | #define FILE_ALLOC_CHUNK 5 | |
866 | #define DIR_ALLOC_CHUNK 5 | |
867 | ||
a092b084 NC |
868 | struct line_info |
869 | { | |
252b5132 | 870 | struct line_info* prev_line; |
252b5132 | 871 | bfd_vma address; |
f075ee0c | 872 | char *filename; |
252b5132 RH |
873 | unsigned int line; |
874 | unsigned int column; | |
a092b084 | 875 | int end_sequence; /* End of (sequential) code sequence. */ |
252b5132 RH |
876 | }; |
877 | ||
a092b084 NC |
878 | struct fileinfo |
879 | { | |
252b5132 RH |
880 | char *name; |
881 | unsigned int dir; | |
882 | unsigned int time; | |
883 | unsigned int size; | |
884 | }; | |
885 | ||
a092b084 NC |
886 | struct line_info_table |
887 | { | |
252b5132 | 888 | bfd* abfd; |
252b5132 RH |
889 | unsigned int num_files; |
890 | unsigned int num_dirs; | |
f075ee0c AM |
891 | char *comp_dir; |
892 | char **dirs; | |
252b5132 | 893 | struct fileinfo* files; |
709d67f1 AM |
894 | struct line_info* last_line; /* largest VMA */ |
895 | struct line_info* lcl_head; /* local head; used in 'add_line_info' */ | |
252b5132 RH |
896 | }; |
897 | ||
4ab527b0 FF |
898 | /* Remember some information about each function. If the function is |
899 | inlined (DW_TAG_inlined_subroutine) it may have two additional | |
900 | attributes, DW_AT_call_file and DW_AT_call_line, which specify the | |
901 | source code location where this function was inlined. */ | |
902 | ||
1ee24f27 DJ |
903 | struct funcinfo |
904 | { | |
709d67f1 AM |
905 | struct funcinfo *prev_func; /* Pointer to previous function in list of all functions */ |
906 | struct funcinfo *caller_func; /* Pointer to function one scope higher */ | |
907 | char *caller_file; /* Source location file name where caller_func inlines this func */ | |
908 | int caller_line; /* Source location line number where caller_func inlines this func */ | |
909 | char *file; /* Source location file name */ | |
910 | int line; /* Source location line number */ | |
4ab527b0 | 911 | int tag; |
f075ee0c | 912 | char *name; |
a13afe8e | 913 | struct arange arange; |
709d67f1 | 914 | asection *sec; /* Where the symbol is defined */ |
5420f73d L |
915 | }; |
916 | ||
917 | struct varinfo | |
918 | { | |
709d67f1 | 919 | /* Pointer to previous variable in list of all variables */ |
5420f73d | 920 | struct varinfo *prev_var; |
709d67f1 | 921 | /* Source location file name */ |
5420f73d | 922 | char *file; |
709d67f1 | 923 | /* Source location line number */ |
5420f73d L |
924 | int line; |
925 | int tag; | |
926 | char *name; | |
5cf2e3f0 | 927 | bfd_vma addr; |
709d67f1 | 928 | /* Where the symbol is defined */ |
5420f73d | 929 | asection *sec; |
709d67f1 | 930 | /* Is this a stack variable? */ |
5420f73d | 931 | unsigned int stack: 1; |
1ee24f27 DJ |
932 | }; |
933 | ||
d4c32a81 L |
934 | /* Return TRUE if NEW_LINE should sort after LINE. */ |
935 | ||
936 | static inline bfd_boolean | |
937 | new_line_sorts_after (struct line_info *new_line, struct line_info *line) | |
938 | { | |
939 | return (new_line->address > line->address | |
940 | || (new_line->address == line->address | |
aff90a5f | 941 | && new_line->end_sequence < line->end_sequence)); |
d4c32a81 L |
942 | } |
943 | ||
944 | ||
af3ef9fe NC |
945 | /* Adds a new entry to the line_info list in the line_info_table, ensuring |
946 | that the list is sorted. Note that the line_info list is sorted from | |
947 | highest to lowest VMA (with possible duplicates); that is, | |
948 | line_info->prev_line always accesses an equal or smaller VMA. */ | |
949 | ||
98591c73 | 950 | static void |
818a27ac AM |
951 | add_line_info (struct line_info_table *table, |
952 | bfd_vma address, | |
953 | char *filename, | |
954 | unsigned int line, | |
955 | unsigned int column, | |
956 | int end_sequence) | |
252b5132 | 957 | { |
dc810e39 | 958 | bfd_size_type amt = sizeof (struct line_info); |
709d67f1 | 959 | struct line_info* info = bfd_alloc (table->abfd, amt); |
252b5132 | 960 | |
d4c32a81 L |
961 | /* Set member data of 'info'. */ |
962 | info->address = address; | |
963 | info->line = line; | |
964 | info->column = column; | |
965 | info->end_sequence = end_sequence; | |
966 | ||
967 | if (filename && filename[0]) | |
968 | { | |
969 | info->filename = bfd_alloc (table->abfd, strlen (filename) + 1); | |
970 | if (info->filename) | |
971 | strcpy (info->filename, filename); | |
972 | } | |
973 | else | |
974 | info->filename = NULL; | |
975 | ||
e82ce529 AM |
976 | /* Find the correct location for 'info'. Normally we will receive |
977 | new line_info data 1) in order and 2) with increasing VMAs. | |
978 | However some compilers break the rules (cf. decode_line_info) and | |
979 | so we include some heuristics for quickly finding the correct | |
980 | location for 'info'. In particular, these heuristics optimize for | |
981 | the common case in which the VMA sequence that we receive is a | |
982 | list of locally sorted VMAs such as | |
983 | p...z a...j (where a < j < p < z) | |
252b5132 | 984 | |
e82ce529 AM |
985 | Note: table->lcl_head is used to head an *actual* or *possible* |
986 | sequence within the list (such as a...j) that is not directly | |
987 | headed by table->last_line | |
988 | ||
989 | Note: we may receive duplicate entries from 'decode_line_info'. */ | |
990 | ||
aff90a5f L |
991 | if (table->last_line |
992 | && table->last_line->address == address | |
993 | && table->last_line->end_sequence == end_sequence) | |
994 | { | |
995 | /* We only keep the last entry with the same address and end | |
996 | sequence. See PR ld/4986. */ | |
997 | if (table->lcl_head == table->last_line) | |
998 | table->lcl_head = info; | |
999 | info->prev_line = table->last_line->prev_line; | |
1000 | table->last_line = info; | |
1001 | } | |
1002 | else if (!table->last_line | |
709d67f1 | 1003 | || new_line_sorts_after (info, table->last_line)) |
d8d1c398 | 1004 | { |
709d67f1 | 1005 | /* Normal case: add 'info' to the beginning of the list */ |
d8d1c398 AM |
1006 | info->prev_line = table->last_line; |
1007 | table->last_line = info; | |
e82ce529 | 1008 | |
d8d1c398 AM |
1009 | /* lcl_head: initialize to head a *possible* sequence at the end. */ |
1010 | if (!table->lcl_head) | |
1011 | table->lcl_head = info; | |
1012 | } | |
1013 | else if (!new_line_sorts_after (info, table->lcl_head) | |
1014 | && (!table->lcl_head->prev_line | |
1015 | || new_line_sorts_after (info, table->lcl_head->prev_line))) | |
1016 | { | |
1017 | /* Abnormal but easy: lcl_head is the head of 'info'. */ | |
1018 | info->prev_line = table->lcl_head->prev_line; | |
1019 | table->lcl_head->prev_line = info; | |
1020 | } | |
1021 | else | |
1022 | { | |
1023 | /* Abnormal and hard: Neither 'last_line' nor 'lcl_head' are valid | |
1024 | heads for 'info'. Reset 'lcl_head'. */ | |
709d67f1 | 1025 | struct line_info* li2 = table->last_line; /* always non-NULL */ |
d8d1c398 | 1026 | struct line_info* li1 = li2->prev_line; |
e82ce529 | 1027 | |
d8d1c398 AM |
1028 | while (li1) |
1029 | { | |
1030 | if (!new_line_sorts_after (info, li2) | |
1031 | && new_line_sorts_after (info, li1)) | |
1032 | break; | |
e82ce529 | 1033 | |
709d67f1 | 1034 | li2 = li1; /* always non-NULL */ |
d8d1c398 AM |
1035 | li1 = li1->prev_line; |
1036 | } | |
1037 | table->lcl_head = li2; | |
1038 | info->prev_line = table->lcl_head->prev_line; | |
1039 | table->lcl_head->prev_line = info; | |
1040 | } | |
252b5132 RH |
1041 | } |
1042 | ||
5ed6aba4 | 1043 | /* Extract a fully qualified filename from a line info table. |
af3ef9fe NC |
1044 | The returned string has been malloc'ed and it is the caller's |
1045 | responsibility to free it. */ | |
5ed6aba4 | 1046 | |
a092b084 | 1047 | static char * |
818a27ac | 1048 | concat_filename (struct line_info_table *table, unsigned int file) |
252b5132 | 1049 | { |
f075ee0c | 1050 | char *filename; |
159002ff RH |
1051 | |
1052 | if (file - 1 >= table->num_files) | |
1053 | { | |
75a657ba L |
1054 | /* FILE == 0 means unknown. */ |
1055 | if (file) | |
1056 | (*_bfd_error_handler) | |
1057 | (_("Dwarf Error: mangled line number section (bad file number).")); | |
af3ef9fe | 1058 | return strdup ("<unknown>"); |
159002ff RH |
1059 | } |
1060 | ||
1061 | filename = table->files[file - 1].name; | |
5ed6aba4 | 1062 | |
7421a730 | 1063 | if (!IS_ABSOLUTE_PATH (filename)) |
252b5132 | 1064 | { |
7421a730 AM |
1065 | char *dirname = NULL; |
1066 | char *subdirname = NULL; | |
1067 | char *name; | |
1068 | size_t len; | |
0dafd5f6 | 1069 | |
7421a730 AM |
1070 | if (table->files[file - 1].dir) |
1071 | subdirname = table->dirs[table->files[file - 1].dir - 1]; | |
1072 | ||
1073 | if (!subdirname || !IS_ABSOLUTE_PATH (subdirname)) | |
1074 | dirname = table->comp_dir; | |
1075 | ||
1076 | if (!dirname) | |
af3ef9fe | 1077 | { |
7421a730 AM |
1078 | dirname = subdirname; |
1079 | subdirname = NULL; | |
1080 | } | |
af3ef9fe | 1081 | |
7421a730 AM |
1082 | if (!dirname) |
1083 | return strdup (filename); | |
1084 | ||
1085 | len = strlen (dirname) + strlen (filename) + 2; | |
1086 | ||
1087 | if (subdirname) | |
1088 | { | |
1089 | len += strlen (subdirname) + 1; | |
1090 | name = bfd_malloc (len); | |
1091 | if (name) | |
1092 | sprintf (name, "%s/%s/%s", dirname, subdirname, filename); | |
1093 | } | |
1094 | else | |
1095 | { | |
af3ef9fe NC |
1096 | name = bfd_malloc (len); |
1097 | if (name) | |
1098 | sprintf (name, "%s/%s", dirname, filename); | |
af3ef9fe | 1099 | } |
7421a730 AM |
1100 | |
1101 | return name; | |
252b5132 | 1102 | } |
af3ef9fe NC |
1103 | |
1104 | return strdup (filename); | |
252b5132 RH |
1105 | } |
1106 | ||
f623be2b | 1107 | static void |
709d67f1 | 1108 | arange_add (bfd *abfd, struct arange *first_arange, bfd_vma low_pc, bfd_vma high_pc) |
f623be2b RH |
1109 | { |
1110 | struct arange *arange; | |
1111 | ||
709d67f1 | 1112 | /* If the first arange is empty, use it. */ |
a13afe8e FF |
1113 | if (first_arange->high == 0) |
1114 | { | |
1115 | first_arange->low = low_pc; | |
1116 | first_arange->high = high_pc; | |
1117 | return; | |
1118 | } | |
98591c73 | 1119 | |
a13afe8e FF |
1120 | /* Next see if we can cheaply extend an existing range. */ |
1121 | arange = first_arange; | |
f623be2b RH |
1122 | do |
1123 | { | |
1124 | if (low_pc == arange->high) | |
1125 | { | |
1126 | arange->high = high_pc; | |
1127 | return; | |
1128 | } | |
1129 | if (high_pc == arange->low) | |
1130 | { | |
1131 | arange->low = low_pc; | |
1132 | return; | |
1133 | } | |
1134 | arange = arange->next; | |
1135 | } | |
1136 | while (arange); | |
1137 | ||
a13afe8e | 1138 | /* Need to allocate a new arange and insert it into the arange list. |
709d67f1 | 1139 | Order isn't significant, so just insert after the first arange. */ |
a13afe8e | 1140 | arange = bfd_zalloc (abfd, sizeof (*arange)); |
f623be2b RH |
1141 | arange->low = low_pc; |
1142 | arange->high = high_pc; | |
a13afe8e FF |
1143 | arange->next = first_arange->next; |
1144 | first_arange->next = arange; | |
f623be2b RH |
1145 | } |
1146 | ||
34b5e0b2 | 1147 | /* Decode the line number information for UNIT. */ |
252b5132 | 1148 | |
34b5e0b2 | 1149 | static struct line_info_table* |
818a27ac | 1150 | decode_line_info (struct comp_unit *unit, struct dwarf2_debug *stash) |
252b5132 RH |
1151 | { |
1152 | bfd *abfd = unit->abfd; | |
252b5132 | 1153 | struct line_info_table* table; |
f075ee0c AM |
1154 | bfd_byte *line_ptr; |
1155 | bfd_byte *line_end; | |
252b5132 | 1156 | struct line_head lh; |
d03ba2a1 | 1157 | unsigned int i, bytes_read, offset_size; |
252b5132 RH |
1158 | char *cur_file, *cur_dir; |
1159 | unsigned char op_code, extended_op, adj_opcode; | |
dc810e39 | 1160 | bfd_size_type amt; |
252b5132 | 1161 | |
1b315056 CS |
1162 | if (! read_section (abfd, ".debug_line", ".zdebug_line", |
1163 | stash->syms, unit->line_offset, | |
1164 | &stash->dwarf_line_buffer, &stash->dwarf_line_size)) | |
1165 | return 0; | |
ccdb16fc | 1166 | |
dc810e39 | 1167 | amt = sizeof (struct line_info_table); |
818a27ac | 1168 | table = bfd_alloc (abfd, amt); |
252b5132 RH |
1169 | table->abfd = abfd; |
1170 | table->comp_dir = unit->comp_dir; | |
1171 | ||
1172 | table->num_files = 0; | |
1173 | table->files = NULL; | |
1174 | ||
1175 | table->num_dirs = 0; | |
1176 | table->dirs = NULL; | |
1177 | ||
159002ff RH |
1178 | table->files = NULL; |
1179 | table->last_line = NULL; | |
e82ce529 | 1180 | table->lcl_head = NULL; |
159002ff | 1181 | |
69dd2e2d | 1182 | line_ptr = stash->dwarf_line_buffer + unit->line_offset; |
252b5132 | 1183 | |
a092b084 | 1184 | /* Read in the prologue. */ |
91a4d569 AM |
1185 | lh.total_length = read_4_bytes (abfd, line_ptr); |
1186 | line_ptr += 4; | |
1187 | offset_size = 4; | |
1188 | if (lh.total_length == 0xffffffff) | |
dae2dd0d | 1189 | { |
dae2dd0d NC |
1190 | lh.total_length = read_8_bytes (abfd, line_ptr); |
1191 | line_ptr += 8; | |
1192 | offset_size = 8; | |
1193 | } | |
91a4d569 | 1194 | else if (lh.total_length == 0 && unit->addr_size == 8) |
d03ba2a1 | 1195 | { |
91a4d569 AM |
1196 | /* Handle (non-standard) 64-bit DWARF2 formats. */ |
1197 | lh.total_length = read_4_bytes (abfd, line_ptr); | |
1198 | line_ptr += 4; | |
d03ba2a1 JJ |
1199 | offset_size = 8; |
1200 | } | |
252b5132 RH |
1201 | line_end = line_ptr + lh.total_length; |
1202 | lh.version = read_2_bytes (abfd, line_ptr); | |
1203 | line_ptr += 2; | |
d03ba2a1 JJ |
1204 | if (offset_size == 4) |
1205 | lh.prologue_length = read_4_bytes (abfd, line_ptr); | |
1206 | else | |
1207 | lh.prologue_length = read_8_bytes (abfd, line_ptr); | |
1208 | line_ptr += offset_size; | |
252b5132 RH |
1209 | lh.minimum_instruction_length = read_1_byte (abfd, line_ptr); |
1210 | line_ptr += 1; | |
1211 | lh.default_is_stmt = read_1_byte (abfd, line_ptr); | |
1212 | line_ptr += 1; | |
1213 | lh.line_base = read_1_signed_byte (abfd, line_ptr); | |
1214 | line_ptr += 1; | |
1215 | lh.line_range = read_1_byte (abfd, line_ptr); | |
1216 | line_ptr += 1; | |
1217 | lh.opcode_base = read_1_byte (abfd, line_ptr); | |
1218 | line_ptr += 1; | |
dc810e39 | 1219 | amt = lh.opcode_base * sizeof (unsigned char); |
818a27ac | 1220 | lh.standard_opcode_lengths = bfd_alloc (abfd, amt); |
252b5132 RH |
1221 | |
1222 | lh.standard_opcode_lengths[0] = 1; | |
98591c73 | 1223 | |
252b5132 RH |
1224 | for (i = 1; i < lh.opcode_base; ++i) |
1225 | { | |
1226 | lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
1227 | line_ptr += 1; | |
1228 | } | |
1229 | ||
a092b084 | 1230 | /* Read directory table. */ |
252b5132 RH |
1231 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
1232 | { | |
1233 | line_ptr += bytes_read; | |
98591c73 | 1234 | |
252b5132 RH |
1235 | if ((table->num_dirs % DIR_ALLOC_CHUNK) == 0) |
1236 | { | |
35330cce NC |
1237 | char **tmp; |
1238 | ||
dc810e39 AM |
1239 | amt = table->num_dirs + DIR_ALLOC_CHUNK; |
1240 | amt *= sizeof (char *); | |
35330cce NC |
1241 | |
1242 | tmp = bfd_realloc (table->dirs, amt); | |
1243 | if (tmp == NULL) | |
1244 | { | |
1245 | free (table->dirs); | |
1246 | return NULL; | |
1247 | } | |
1248 | table->dirs = tmp; | |
252b5132 | 1249 | } |
98591c73 | 1250 | |
252b5132 RH |
1251 | table->dirs[table->num_dirs++] = cur_dir; |
1252 | } | |
98591c73 | 1253 | |
252b5132 RH |
1254 | line_ptr += bytes_read; |
1255 | ||
a092b084 | 1256 | /* Read file name table. */ |
252b5132 RH |
1257 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
1258 | { | |
1259 | line_ptr += bytes_read; | |
98591c73 | 1260 | |
252b5132 RH |
1261 | if ((table->num_files % FILE_ALLOC_CHUNK) == 0) |
1262 | { | |
35330cce NC |
1263 | struct fileinfo *tmp; |
1264 | ||
dc810e39 AM |
1265 | amt = table->num_files + FILE_ALLOC_CHUNK; |
1266 | amt *= sizeof (struct fileinfo); | |
35330cce NC |
1267 | |
1268 | tmp = bfd_realloc (table->files, amt); | |
1269 | if (tmp == NULL) | |
1270 | { | |
1271 | free (table->files); | |
1272 | free (table->dirs); | |
1273 | return NULL; | |
1274 | } | |
1275 | table->files = tmp; | |
252b5132 | 1276 | } |
98591c73 | 1277 | |
252b5132 RH |
1278 | table->files[table->num_files].name = cur_file; |
1279 | table->files[table->num_files].dir = | |
1280 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1281 | line_ptr += bytes_read; | |
1282 | table->files[table->num_files].time = | |
1283 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1284 | line_ptr += bytes_read; | |
1285 | table->files[table->num_files].size = | |
1286 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1287 | line_ptr += bytes_read; | |
1288 | table->num_files++; | |
1289 | } | |
98591c73 | 1290 | |
252b5132 RH |
1291 | line_ptr += bytes_read; |
1292 | ||
1293 | /* Read the statement sequences until there's nothing left. */ | |
1294 | while (line_ptr < line_end) | |
1295 | { | |
a092b084 | 1296 | /* State machine registers. */ |
252b5132 | 1297 | bfd_vma address = 0; |
8bfd78b3 | 1298 | char * filename = table->num_files ? concat_filename (table, 1) : NULL; |
252b5132 RH |
1299 | unsigned int line = 1; |
1300 | unsigned int column = 0; | |
1301 | int is_stmt = lh.default_is_stmt; | |
e2f6d277 NC |
1302 | int end_sequence = 0; |
1303 | /* eraxxon@alumni.rice.edu: Against the DWARF2 specs, some | |
e82ce529 AM |
1304 | compilers generate address sequences that are wildly out of |
1305 | order using DW_LNE_set_address (e.g. Intel C++ 6.0 compiler | |
1306 | for ia64-Linux). Thus, to determine the low and high | |
1307 | address, we must compare on every DW_LNS_copy, etc. */ | |
75758e9d | 1308 | bfd_vma low_pc = (bfd_vma) -1; |
e2f6d277 | 1309 | bfd_vma high_pc = 0; |
252b5132 | 1310 | |
a092b084 | 1311 | /* Decode the table. */ |
252b5132 RH |
1312 | while (! end_sequence) |
1313 | { | |
1314 | op_code = read_1_byte (abfd, line_ptr); | |
1315 | line_ptr += 1; | |
98591c73 | 1316 | |
1a509dcc | 1317 | if (op_code >= lh.opcode_base) |
e2f6d277 NC |
1318 | { |
1319 | /* Special operand. */ | |
1a509dcc GK |
1320 | adj_opcode = op_code - lh.opcode_base; |
1321 | address += (adj_opcode / lh.line_range) | |
1322 | * lh.minimum_instruction_length; | |
1323 | line += lh.line_base + (adj_opcode % lh.line_range); | |
1324 | /* Append row to matrix using current values. */ | |
1325 | add_line_info (table, address, filename, line, column, 0); | |
75758e9d AM |
1326 | if (address < low_pc) |
1327 | low_pc = address; | |
e2f6d277 NC |
1328 | if (address > high_pc) |
1329 | high_pc = address; | |
1a509dcc GK |
1330 | } |
1331 | else switch (op_code) | |
252b5132 RH |
1332 | { |
1333 | case DW_LNS_extended_op: | |
e2f6d277 NC |
1334 | /* Ignore length. */ |
1335 | line_ptr += 1; | |
252b5132 RH |
1336 | extended_op = read_1_byte (abfd, line_ptr); |
1337 | line_ptr += 1; | |
e2f6d277 | 1338 | |
252b5132 RH |
1339 | switch (extended_op) |
1340 | { | |
1341 | case DW_LNE_end_sequence: | |
1342 | end_sequence = 1; | |
f623be2b RH |
1343 | add_line_info (table, address, filename, line, column, |
1344 | end_sequence); | |
75758e9d AM |
1345 | if (address < low_pc) |
1346 | low_pc = address; | |
e2f6d277 NC |
1347 | if (address > high_pc) |
1348 | high_pc = address; | |
709d67f1 | 1349 | arange_add (unit->abfd, &unit->arange, low_pc, high_pc); |
252b5132 RH |
1350 | break; |
1351 | case DW_LNE_set_address: | |
1352 | address = read_address (unit, line_ptr); | |
1353 | line_ptr += unit->addr_size; | |
1354 | break; | |
1355 | case DW_LNE_define_file: | |
1356 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
1357 | line_ptr += bytes_read; | |
1358 | if ((table->num_files % FILE_ALLOC_CHUNK) == 0) | |
1359 | { | |
35330cce NC |
1360 | struct fileinfo *tmp; |
1361 | ||
dc810e39 AM |
1362 | amt = table->num_files + FILE_ALLOC_CHUNK; |
1363 | amt *= sizeof (struct fileinfo); | |
35330cce NC |
1364 | tmp = bfd_realloc (table->files, amt); |
1365 | if (tmp == NULL) | |
d8d1c398 | 1366 | { |
35330cce NC |
1367 | free (table->files); |
1368 | free (table->dirs); | |
1369 | free (filename); | |
1370 | return NULL; | |
d8d1c398 | 1371 | } |
35330cce | 1372 | table->files = tmp; |
252b5132 RH |
1373 | } |
1374 | table->files[table->num_files].name = cur_file; | |
1375 | table->files[table->num_files].dir = | |
1376 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1377 | line_ptr += bytes_read; | |
1378 | table->files[table->num_files].time = | |
1379 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1380 | line_ptr += bytes_read; | |
1381 | table->files[table->num_files].size = | |
1382 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1383 | line_ptr += bytes_read; | |
1384 | table->num_files++; | |
1385 | break; | |
1386 | default: | |
1387 | (*_bfd_error_handler) (_("Dwarf Error: mangled line number section.")); | |
1388 | bfd_set_error (bfd_error_bad_value); | |
35330cce NC |
1389 | free (filename); |
1390 | free (table->files); | |
1391 | free (table->dirs); | |
1392 | return NULL; | |
252b5132 RH |
1393 | } |
1394 | break; | |
1395 | case DW_LNS_copy: | |
159002ff | 1396 | add_line_info (table, address, filename, line, column, 0); |
75758e9d AM |
1397 | if (address < low_pc) |
1398 | low_pc = address; | |
e2f6d277 NC |
1399 | if (address > high_pc) |
1400 | high_pc = address; | |
252b5132 RH |
1401 | break; |
1402 | case DW_LNS_advance_pc: | |
1403 | address += lh.minimum_instruction_length | |
1404 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1405 | line_ptr += bytes_read; | |
1406 | break; | |
1407 | case DW_LNS_advance_line: | |
1408 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
1409 | line_ptr += bytes_read; | |
1410 | break; | |
1411 | case DW_LNS_set_file: | |
1412 | { | |
1413 | unsigned int file; | |
1414 | ||
e2f6d277 NC |
1415 | /* The file and directory tables are 0 |
1416 | based, the references are 1 based. */ | |
252b5132 RH |
1417 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
1418 | line_ptr += bytes_read; | |
af3ef9fe NC |
1419 | if (filename) |
1420 | free (filename); | |
252b5132 RH |
1421 | filename = concat_filename (table, file); |
1422 | break; | |
1423 | } | |
1424 | case DW_LNS_set_column: | |
1425 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1426 | line_ptr += bytes_read; | |
1427 | break; | |
1428 | case DW_LNS_negate_stmt: | |
1429 | is_stmt = (!is_stmt); | |
1430 | break; | |
1431 | case DW_LNS_set_basic_block: | |
252b5132 RH |
1432 | break; |
1433 | case DW_LNS_const_add_pc: | |
159002ff RH |
1434 | address += lh.minimum_instruction_length |
1435 | * ((255 - lh.opcode_base) / lh.line_range); | |
252b5132 RH |
1436 | break; |
1437 | case DW_LNS_fixed_advance_pc: | |
1438 | address += read_2_bytes (abfd, line_ptr); | |
1439 | line_ptr += 2; | |
1440 | break; | |
1a509dcc | 1441 | default: |
e2f6d277 | 1442 | { |
1a509dcc | 1443 | int i; |
5ed6aba4 | 1444 | |
e2f6d277 | 1445 | /* Unknown standard opcode, ignore it. */ |
1a509dcc GK |
1446 | for (i = 0; i < lh.standard_opcode_lengths[op_code]; i++) |
1447 | { | |
1448 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
1449 | line_ptr += bytes_read; | |
1450 | } | |
1451 | } | |
252b5132 RH |
1452 | } |
1453 | } | |
5ed6aba4 | 1454 | |
af3ef9fe NC |
1455 | if (filename) |
1456 | free (filename); | |
252b5132 RH |
1457 | } |
1458 | ||
1459 | return table; | |
1460 | } | |
1461 | ||
b34976b6 AM |
1462 | /* If ADDR is within TABLE set the output parameters and return TRUE, |
1463 | otherwise return FALSE. The output parameters, FILENAME_PTR and | |
a092b084 | 1464 | LINENUMBER_PTR, are pointers to the objects to be filled in. */ |
252b5132 | 1465 | |
b34976b6 | 1466 | static bfd_boolean |
818a27ac AM |
1467 | lookup_address_in_line_info_table (struct line_info_table *table, |
1468 | bfd_vma addr, | |
1469 | struct funcinfo *function, | |
1470 | const char **filename_ptr, | |
1471 | unsigned int *linenumber_ptr) | |
252b5132 | 1472 | { |
e82ce529 | 1473 | /* Note: table->last_line should be a descendingly sorted list. */ |
159002ff | 1474 | struct line_info* next_line = table->last_line; |
e82ce529 AM |
1475 | struct line_info* each_line = NULL; |
1476 | *filename_ptr = NULL; | |
98591c73 | 1477 | |
159002ff | 1478 | if (!next_line) |
b34976b6 | 1479 | return FALSE; |
159002ff RH |
1480 | |
1481 | each_line = next_line->prev_line; | |
1482 | ||
e82ce529 AM |
1483 | /* Check for large addresses */ |
1484 | if (addr > next_line->address) | |
1485 | each_line = NULL; /* ensure we skip over the normal case */ | |
1486 | ||
1487 | /* Normal case: search the list; save */ | |
159002ff | 1488 | while (each_line && next_line) |
252b5132 | 1489 | { |
e82ce529 AM |
1490 | /* If we have an address match, save this info. This allows us |
1491 | to return as good as results as possible for strange debugging | |
1492 | info. */ | |
b34976b6 | 1493 | bfd_boolean addr_match = FALSE; |
a13afe8e | 1494 | if (each_line->address <= addr && addr < next_line->address) |
252b5132 | 1495 | { |
b34976b6 | 1496 | addr_match = TRUE; |
e82ce529 | 1497 | |
1ee24f27 DJ |
1498 | /* If this line appears to span functions, and addr is in the |
1499 | later function, return the first line of that function instead | |
1500 | of the last line of the earlier one. This check is for GCC | |
1501 | 2.95, which emits the first line number for a function late. */ | |
a13afe8e FF |
1502 | |
1503 | if (function != NULL) | |
1ee24f27 | 1504 | { |
a13afe8e FF |
1505 | bfd_vma lowest_pc; |
1506 | struct arange *arange; | |
1507 | ||
1508 | /* Find the lowest address in the function's range list */ | |
1509 | lowest_pc = function->arange.low; | |
1510 | for (arange = &function->arange; | |
1511 | arange; | |
1512 | arange = arange->next) | |
1513 | { | |
1514 | if (function->arange.low < lowest_pc) | |
1515 | lowest_pc = function->arange.low; | |
1516 | } | |
1517 | /* Check for spanning function and set outgoing line info */ | |
1518 | if (addr >= lowest_pc | |
1519 | && each_line->address < lowest_pc | |
1520 | && next_line->address > lowest_pc) | |
1521 | { | |
1522 | *filename_ptr = next_line->filename; | |
1523 | *linenumber_ptr = next_line->line; | |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | *filename_ptr = each_line->filename; | |
1528 | *linenumber_ptr = each_line->line; | |
1529 | } | |
1ee24f27 | 1530 | } |
6bd00c5d L |
1531 | else |
1532 | { | |
1533 | *filename_ptr = each_line->filename; | |
1534 | *linenumber_ptr = each_line->line; | |
1535 | } | |
252b5132 | 1536 | } |
e82ce529 AM |
1537 | |
1538 | if (addr_match && !each_line->end_sequence) | |
b34976b6 | 1539 | return TRUE; /* we have definitely found what we want */ |
e82ce529 | 1540 | |
159002ff RH |
1541 | next_line = each_line; |
1542 | each_line = each_line->prev_line; | |
252b5132 | 1543 | } |
98591c73 | 1544 | |
e82ce529 AM |
1545 | /* At this point each_line is NULL but next_line is not. If we found |
1546 | a candidate end-of-sequence point in the loop above, we can return | |
1547 | that (compatibility with a bug in the Intel compiler); otherwise, | |
1548 | assuming that we found the containing function for this address in | |
1549 | this compilation unit, return the first line we have a number for | |
1550 | (compatibility with GCC 2.95). */ | |
1551 | if (*filename_ptr == NULL && function != NULL) | |
1ee24f27 DJ |
1552 | { |
1553 | *filename_ptr = next_line->filename; | |
1554 | *linenumber_ptr = next_line->line; | |
b34976b6 | 1555 | return TRUE; |
1ee24f27 DJ |
1556 | } |
1557 | ||
b34976b6 | 1558 | return FALSE; |
252b5132 | 1559 | } |
98591c73 | 1560 | |
a13afe8e FF |
1561 | /* Read in the .debug_ranges section for future reference */ |
1562 | ||
1563 | static bfd_boolean | |
1564 | read_debug_ranges (struct comp_unit *unit) | |
1565 | { | |
1566 | struct dwarf2_debug *stash = unit->stash; | |
1b315056 CS |
1567 | return read_section (unit->abfd, ".debug_ranges", ".zdebug_ranges", |
1568 | stash->syms, 0, | |
1569 | &stash->dwarf_ranges_buffer, &stash->dwarf_ranges_size); | |
a13afe8e FF |
1570 | } |
1571 | ||
a092b084 | 1572 | /* Function table functions. */ |
252b5132 | 1573 | |
a13afe8e FF |
1574 | /* If ADDR is within TABLE, set FUNCTIONNAME_PTR, and return TRUE. |
1575 | Note that we need to find the function that has the smallest | |
1576 | range that contains ADDR, to handle inlined functions without | |
1577 | depending upon them being ordered in TABLE by increasing range. */ | |
252b5132 | 1578 | |
b34976b6 | 1579 | static bfd_boolean |
4ab527b0 | 1580 | lookup_address_in_function_table (struct comp_unit *unit, |
818a27ac AM |
1581 | bfd_vma addr, |
1582 | struct funcinfo **function_ptr, | |
1583 | const char **functionname_ptr) | |
252b5132 RH |
1584 | { |
1585 | struct funcinfo* each_func; | |
a13afe8e FF |
1586 | struct funcinfo* best_fit = NULL; |
1587 | struct arange *arange; | |
252b5132 | 1588 | |
4ab527b0 | 1589 | for (each_func = unit->function_table; |
252b5132 RH |
1590 | each_func; |
1591 | each_func = each_func->prev_func) | |
1592 | { | |
a13afe8e FF |
1593 | for (arange = &each_func->arange; |
1594 | arange; | |
1595 | arange = arange->next) | |
252b5132 | 1596 | { |
a13afe8e FF |
1597 | if (addr >= arange->low && addr < arange->high) |
1598 | { | |
1599 | if (!best_fit || | |
1600 | ((arange->high - arange->low) < (best_fit->arange.high - best_fit->arange.low))) | |
1601 | best_fit = each_func; | |
1602 | } | |
252b5132 RH |
1603 | } |
1604 | } | |
98591c73 | 1605 | |
a13afe8e FF |
1606 | if (best_fit) |
1607 | { | |
1608 | *functionname_ptr = best_fit->name; | |
1609 | *function_ptr = best_fit; | |
1610 | return TRUE; | |
1611 | } | |
1612 | else | |
1613 | { | |
1614 | return FALSE; | |
1615 | } | |
252b5132 RH |
1616 | } |
1617 | ||
5420f73d L |
1618 | /* If SYM at ADDR is within function table of UNIT, set FILENAME_PTR |
1619 | and LINENUMBER_PTR, and return TRUE. */ | |
1620 | ||
1621 | static bfd_boolean | |
1622 | lookup_symbol_in_function_table (struct comp_unit *unit, | |
1623 | asymbol *sym, | |
1624 | bfd_vma addr, | |
1625 | const char **filename_ptr, | |
1626 | unsigned int *linenumber_ptr) | |
1627 | { | |
1628 | struct funcinfo* each_func; | |
1629 | struct funcinfo* best_fit = NULL; | |
1630 | struct arange *arange; | |
1631 | const char *name = bfd_asymbol_name (sym); | |
1632 | asection *sec = bfd_get_section (sym); | |
1633 | ||
1634 | for (each_func = unit->function_table; | |
1635 | each_func; | |
1636 | each_func = each_func->prev_func) | |
1637 | { | |
1638 | for (arange = &each_func->arange; | |
1639 | arange; | |
1640 | arange = arange->next) | |
1641 | { | |
1642 | if ((!each_func->sec || each_func->sec == sec) | |
1643 | && addr >= arange->low | |
1644 | && addr < arange->high | |
650f284e | 1645 | && each_func->name |
5420f73d L |
1646 | && strcmp (name, each_func->name) == 0 |
1647 | && (!best_fit | |
1648 | || ((arange->high - arange->low) | |
1649 | < (best_fit->arange.high - best_fit->arange.low)))) | |
1650 | best_fit = each_func; | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | if (best_fit) | |
1655 | { | |
1656 | best_fit->sec = sec; | |
1657 | *filename_ptr = best_fit->file; | |
1658 | *linenumber_ptr = best_fit->line; | |
1659 | return TRUE; | |
1660 | } | |
1661 | else | |
1662 | return FALSE; | |
1663 | } | |
1664 | ||
1665 | /* Variable table functions. */ | |
1666 | ||
1667 | /* If SYM is within variable table of UNIT, set FILENAME_PTR and | |
1668 | LINENUMBER_PTR, and return TRUE. */ | |
1669 | ||
1670 | static bfd_boolean | |
1671 | lookup_symbol_in_variable_table (struct comp_unit *unit, | |
1672 | asymbol *sym, | |
5cf2e3f0 | 1673 | bfd_vma addr, |
5420f73d L |
1674 | const char **filename_ptr, |
1675 | unsigned int *linenumber_ptr) | |
1676 | { | |
1677 | const char *name = bfd_asymbol_name (sym); | |
1678 | asection *sec = bfd_get_section (sym); | |
1679 | struct varinfo* each; | |
1680 | ||
1681 | for (each = unit->variable_table; each; each = each->prev_var) | |
1682 | if (each->stack == 0 | |
5cf2e3f0 L |
1683 | && each->file != NULL |
1684 | && each->name != NULL | |
1685 | && each->addr == addr | |
5420f73d L |
1686 | && (!each->sec || each->sec == sec) |
1687 | && strcmp (name, each->name) == 0) | |
1688 | break; | |
1689 | ||
1690 | if (each) | |
1691 | { | |
1692 | each->sec = sec; | |
1693 | *filename_ptr = each->file; | |
1694 | *linenumber_ptr = each->line; | |
1695 | return TRUE; | |
1696 | } | |
1697 | else | |
1698 | return FALSE; | |
1699 | } | |
1700 | ||
06f22d7e FF |
1701 | static char * |
1702 | find_abstract_instance_name (struct comp_unit *unit, bfd_uint64_t die_ref) | |
1703 | { | |
1704 | bfd *abfd = unit->abfd; | |
f075ee0c | 1705 | bfd_byte *info_ptr; |
06f22d7e FF |
1706 | unsigned int abbrev_number, bytes_read, i; |
1707 | struct abbrev_info *abbrev; | |
1708 | struct attribute attr; | |
1709 | char *name = 0; | |
1710 | ||
c0c28ab8 | 1711 | info_ptr = unit->info_ptr_unit + die_ref; |
06f22d7e FF |
1712 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
1713 | info_ptr += bytes_read; | |
1714 | ||
1715 | if (abbrev_number) | |
1716 | { | |
1717 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); | |
1718 | if (! abbrev) | |
1719 | { | |
1720 | (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."), | |
1721 | abbrev_number); | |
1722 | bfd_set_error (bfd_error_bad_value); | |
1723 | } | |
1724 | else | |
1725 | { | |
d5cbaa15 | 1726 | for (i = 0; i < abbrev->num_attrs; ++i) |
06f22d7e FF |
1727 | { |
1728 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr); | |
26bf4e33 FF |
1729 | switch (attr.name) |
1730 | { | |
1731 | case DW_AT_name: | |
d5cbaa15 JW |
1732 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ |
1733 | if (name == NULL) | |
1734 | name = attr.u.str; | |
26bf4e33 FF |
1735 | break; |
1736 | case DW_AT_specification: | |
1737 | name = find_abstract_instance_name (unit, attr.u.val); | |
1738 | break; | |
d5cbaa15 JW |
1739 | case DW_AT_MIPS_linkage_name: |
1740 | name = attr.u.str; | |
1741 | break; | |
26bf4e33 FF |
1742 | default: |
1743 | break; | |
1744 | } | |
06f22d7e FF |
1745 | } |
1746 | } | |
1747 | } | |
709d67f1 | 1748 | return (name); |
06f22d7e FF |
1749 | } |
1750 | ||
a13afe8e | 1751 | static void |
709d67f1 | 1752 | read_rangelist (struct comp_unit *unit, struct arange *arange, bfd_uint64_t offset) |
a13afe8e FF |
1753 | { |
1754 | bfd_byte *ranges_ptr; | |
1755 | bfd_vma base_address = unit->base_address; | |
1756 | ||
1757 | if (! unit->stash->dwarf_ranges_buffer) | |
1758 | { | |
1759 | if (! read_debug_ranges (unit)) | |
1760 | return; | |
1761 | } | |
1762 | ranges_ptr = unit->stash->dwarf_ranges_buffer + offset; | |
d8d1c398 | 1763 | |
a13afe8e FF |
1764 | for (;;) |
1765 | { | |
1766 | bfd_vma low_pc; | |
1767 | bfd_vma high_pc; | |
1768 | ||
a29b7e88 | 1769 | if (unit->addr_size == 4) |
a13afe8e FF |
1770 | { |
1771 | low_pc = read_4_bytes (unit->abfd, ranges_ptr); | |
1772 | ranges_ptr += 4; | |
1773 | high_pc = read_4_bytes (unit->abfd, ranges_ptr); | |
1774 | ranges_ptr += 4; | |
1775 | } | |
1776 | else | |
1777 | { | |
1778 | low_pc = read_8_bytes (unit->abfd, ranges_ptr); | |
1779 | ranges_ptr += 8; | |
1780 | high_pc = read_8_bytes (unit->abfd, ranges_ptr); | |
1781 | ranges_ptr += 8; | |
1782 | } | |
1783 | if (low_pc == 0 && high_pc == 0) | |
1784 | break; | |
1785 | if (low_pc == -1UL && high_pc != -1UL) | |
1786 | base_address = high_pc; | |
1787 | else | |
709d67f1 | 1788 | arange_add (unit->abfd, arange, base_address + low_pc, base_address + high_pc); |
a13afe8e FF |
1789 | } |
1790 | } | |
1791 | ||
a092b084 | 1792 | /* DWARF2 Compilation unit functions. */ |
252b5132 RH |
1793 | |
1794 | /* Scan over each die in a comp. unit looking for functions to add | |
34b5e0b2 | 1795 | to the function table and variables to the variable table. */ |
252b5132 | 1796 | |
b34976b6 | 1797 | static bfd_boolean |
5420f73d | 1798 | scan_unit_for_symbols (struct comp_unit *unit) |
252b5132 RH |
1799 | { |
1800 | bfd *abfd = unit->abfd; | |
f075ee0c | 1801 | bfd_byte *info_ptr = unit->first_child_die_ptr; |
252b5132 | 1802 | int nesting_level = 1; |
c955f9cd JW |
1803 | struct funcinfo **nested_funcs; |
1804 | int nested_funcs_size; | |
1805 | ||
1806 | /* Maintain a stack of in-scope functions and inlined functions, which we | |
1807 | can use to set the caller_func field. */ | |
1808 | nested_funcs_size = 32; | |
1809 | nested_funcs = bfd_malloc (nested_funcs_size * sizeof (struct funcinfo *)); | |
1810 | if (nested_funcs == NULL) | |
1811 | return FALSE; | |
34b5e0b2 | 1812 | nested_funcs[nesting_level] = 0; |
252b5132 RH |
1813 | |
1814 | while (nesting_level) | |
1815 | { | |
1816 | unsigned int abbrev_number, bytes_read, i; | |
1817 | struct abbrev_info *abbrev; | |
1818 | struct attribute attr; | |
1819 | struct funcinfo *func; | |
5420f73d | 1820 | struct varinfo *var; |
a13afe8e FF |
1821 | bfd_vma low_pc = 0; |
1822 | bfd_vma high_pc = 0; | |
252b5132 RH |
1823 | |
1824 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
1825 | info_ptr += bytes_read; | |
1826 | ||
1827 | if (! abbrev_number) | |
1828 | { | |
1829 | nesting_level--; | |
1830 | continue; | |
1831 | } | |
98591c73 | 1832 | |
252b5132 RH |
1833 | abbrev = lookup_abbrev (abbrev_number,unit->abbrevs); |
1834 | if (! abbrev) | |
1835 | { | |
f46c2da6 | 1836 | (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."), |
252b5132 RH |
1837 | abbrev_number); |
1838 | bfd_set_error (bfd_error_bad_value); | |
c955f9cd | 1839 | free (nested_funcs); |
b34976b6 | 1840 | return FALSE; |
252b5132 | 1841 | } |
98591c73 | 1842 | |
5420f73d | 1843 | var = NULL; |
06f22d7e | 1844 | if (abbrev->tag == DW_TAG_subprogram |
5420f73d | 1845 | || abbrev->tag == DW_TAG_entry_point |
06f22d7e | 1846 | || abbrev->tag == DW_TAG_inlined_subroutine) |
252b5132 | 1847 | { |
dc810e39 | 1848 | bfd_size_type amt = sizeof (struct funcinfo); |
818a27ac | 1849 | func = bfd_zalloc (abfd, amt); |
4ab527b0 | 1850 | func->tag = abbrev->tag; |
252b5132 RH |
1851 | func->prev_func = unit->function_table; |
1852 | unit->function_table = func; | |
bd210d54 | 1853 | BFD_ASSERT (!unit->cached); |
c955f9cd JW |
1854 | |
1855 | if (func->tag == DW_TAG_inlined_subroutine) | |
1856 | for (i = nesting_level - 1; i >= 1; i--) | |
1857 | if (nested_funcs[i]) | |
1858 | { | |
1859 | func->caller_func = nested_funcs[i]; | |
1860 | break; | |
1861 | } | |
1862 | nested_funcs[nesting_level] = func; | |
252b5132 RH |
1863 | } |
1864 | else | |
5420f73d L |
1865 | { |
1866 | func = NULL; | |
1867 | if (abbrev->tag == DW_TAG_variable) | |
1868 | { | |
1869 | bfd_size_type amt = sizeof (struct varinfo); | |
1870 | var = bfd_zalloc (abfd, amt); | |
1871 | var->tag = abbrev->tag; | |
1872 | var->stack = 1; | |
1873 | var->prev_var = unit->variable_table; | |
1874 | unit->variable_table = var; | |
bd210d54 | 1875 | BFD_ASSERT (!unit->cached); |
5420f73d | 1876 | } |
c955f9cd JW |
1877 | |
1878 | /* No inline function in scope at this nesting level. */ | |
1879 | nested_funcs[nesting_level] = 0; | |
5420f73d | 1880 | } |
98591c73 | 1881 | |
252b5132 RH |
1882 | for (i = 0; i < abbrev->num_attrs; ++i) |
1883 | { | |
1884 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr); | |
98591c73 | 1885 | |
252b5132 RH |
1886 | if (func) |
1887 | { | |
1888 | switch (attr.name) | |
1889 | { | |
4ab527b0 FF |
1890 | case DW_AT_call_file: |
1891 | func->caller_file = concat_filename (unit->line_table, attr.u.val); | |
1892 | break; | |
1893 | ||
1894 | case DW_AT_call_line: | |
1895 | func->caller_line = attr.u.val; | |
1896 | break; | |
1897 | ||
06f22d7e FF |
1898 | case DW_AT_abstract_origin: |
1899 | func->name = find_abstract_instance_name (unit, attr.u.val); | |
1900 | break; | |
1901 | ||
252b5132 | 1902 | case DW_AT_name: |
252b5132 RH |
1903 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ |
1904 | if (func->name == NULL) | |
482e2e37 | 1905 | func->name = attr.u.str; |
252b5132 | 1906 | break; |
98591c73 | 1907 | |
252b5132 | 1908 | case DW_AT_MIPS_linkage_name: |
482e2e37 | 1909 | func->name = attr.u.str; |
252b5132 RH |
1910 | break; |
1911 | ||
1912 | case DW_AT_low_pc: | |
a13afe8e | 1913 | low_pc = attr.u.val; |
252b5132 RH |
1914 | break; |
1915 | ||
1916 | case DW_AT_high_pc: | |
a13afe8e FF |
1917 | high_pc = attr.u.val; |
1918 | break; | |
1919 | ||
1920 | case DW_AT_ranges: | |
709d67f1 | 1921 | read_rangelist (unit, &func->arange, attr.u.val); |
252b5132 RH |
1922 | break; |
1923 | ||
5420f73d L |
1924 | case DW_AT_decl_file: |
1925 | func->file = concat_filename (unit->line_table, | |
1926 | attr.u.val); | |
1927 | break; | |
1928 | ||
1929 | case DW_AT_decl_line: | |
1930 | func->line = attr.u.val; | |
1931 | break; | |
1932 | ||
1933 | default: | |
1934 | break; | |
1935 | } | |
1936 | } | |
1937 | else if (var) | |
1938 | { | |
1939 | switch (attr.name) | |
1940 | { | |
1941 | case DW_AT_name: | |
1942 | var->name = attr.u.str; | |
1943 | break; | |
1944 | ||
1945 | case DW_AT_decl_file: | |
1946 | var->file = concat_filename (unit->line_table, | |
1947 | attr.u.val); | |
1948 | break; | |
1949 | ||
1950 | case DW_AT_decl_line: | |
1951 | var->line = attr.u.val; | |
1952 | break; | |
1953 | ||
1954 | case DW_AT_external: | |
1955 | if (attr.u.val != 0) | |
1956 | var->stack = 0; | |
1957 | break; | |
1958 | ||
1959 | case DW_AT_location: | |
5cf2e3f0 | 1960 | switch (attr.form) |
5420f73d | 1961 | { |
5cf2e3f0 L |
1962 | case DW_FORM_block: |
1963 | case DW_FORM_block1: | |
1964 | case DW_FORM_block2: | |
1965 | case DW_FORM_block4: | |
1966 | if (*attr.u.blk->data == DW_OP_addr) | |
5420f73d | 1967 | { |
5cf2e3f0 | 1968 | var->stack = 0; |
98b880f4 JW |
1969 | |
1970 | /* Verify that DW_OP_addr is the only opcode in the | |
1971 | location, in which case the block size will be 1 | |
1972 | plus the address size. */ | |
1973 | /* ??? For TLS variables, gcc can emit | |
1974 | DW_OP_addr <addr> DW_OP_GNU_push_tls_address | |
1975 | which we don't handle here yet. */ | |
1976 | if (attr.u.blk->size == unit->addr_size + 1U) | |
1977 | var->addr = bfd_get (unit->addr_size * 8, | |
1978 | unit->abfd, | |
1979 | attr.u.blk->data + 1); | |
5420f73d | 1980 | } |
5cf2e3f0 | 1981 | break; |
d8d1c398 | 1982 | |
5cf2e3f0 L |
1983 | default: |
1984 | break; | |
5420f73d L |
1985 | } |
1986 | break; | |
1987 | ||
252b5132 RH |
1988 | default: |
1989 | break; | |
1990 | } | |
1991 | } | |
1992 | } | |
1993 | ||
a13afe8e FF |
1994 | if (func && high_pc != 0) |
1995 | { | |
1996 | arange_add (unit->abfd, &func->arange, low_pc, high_pc); | |
1997 | } | |
1998 | ||
252b5132 | 1999 | if (abbrev->has_children) |
c955f9cd JW |
2000 | { |
2001 | nesting_level++; | |
2002 | ||
2003 | if (nesting_level >= nested_funcs_size) | |
2004 | { | |
2005 | struct funcinfo **tmp; | |
2006 | ||
2007 | nested_funcs_size *= 2; | |
2008 | tmp = bfd_realloc (nested_funcs, | |
2009 | (nested_funcs_size | |
2010 | * sizeof (struct funcinfo *))); | |
2011 | if (tmp == NULL) | |
2012 | { | |
2013 | free (nested_funcs); | |
2014 | return FALSE; | |
2015 | } | |
2016 | nested_funcs = tmp; | |
2017 | } | |
2018 | nested_funcs[nesting_level] = 0; | |
2019 | } | |
252b5132 RH |
2020 | } |
2021 | ||
c955f9cd | 2022 | free (nested_funcs); |
b34976b6 | 2023 | return TRUE; |
252b5132 RH |
2024 | } |
2025 | ||
5e38c3b8 MM |
2026 | /* Parse a DWARF2 compilation unit starting at INFO_PTR. This |
2027 | includes the compilation unit header that proceeds the DIE's, but | |
5c4491d3 | 2028 | does not include the length field that precedes each compilation |
5e38c3b8 | 2029 | unit header. END_PTR points one past the end of this comp unit. |
d03ba2a1 | 2030 | OFFSET_SIZE is the size of DWARF2 offsets (either 4 or 8 bytes). |
252b5132 RH |
2031 | |
2032 | This routine does not read the whole compilation unit; only enough | |
2033 | to get to the line number information for the compilation unit. */ | |
2034 | ||
2035 | static struct comp_unit * | |
0d161102 | 2036 | parse_comp_unit (struct dwarf2_debug *stash, |
818a27ac | 2037 | bfd_vma unit_length, |
f075ee0c | 2038 | bfd_byte *info_ptr_unit, |
818a27ac | 2039 | unsigned int offset_size) |
252b5132 RH |
2040 | { |
2041 | struct comp_unit* unit; | |
f46c2da6 | 2042 | unsigned int version; |
8ce8c090 | 2043 | bfd_uint64_t abbrev_offset = 0; |
f46c2da6 | 2044 | unsigned int addr_size; |
252b5132 | 2045 | struct abbrev_info** abbrevs; |
252b5132 RH |
2046 | unsigned int abbrev_number, bytes_read, i; |
2047 | struct abbrev_info *abbrev; | |
2048 | struct attribute attr; | |
f075ee0c AM |
2049 | bfd_byte *info_ptr = stash->info_ptr; |
2050 | bfd_byte *end_ptr = info_ptr + unit_length; | |
dc810e39 | 2051 | bfd_size_type amt; |
a13afe8e FF |
2052 | bfd_vma low_pc = 0; |
2053 | bfd_vma high_pc = 0; | |
0d161102 | 2054 | bfd *abfd = stash->bfd; |
3fde5a36 | 2055 | |
252b5132 RH |
2056 | version = read_2_bytes (abfd, info_ptr); |
2057 | info_ptr += 2; | |
d03ba2a1 JJ |
2058 | BFD_ASSERT (offset_size == 4 || offset_size == 8); |
2059 | if (offset_size == 4) | |
5e38c3b8 | 2060 | abbrev_offset = read_4_bytes (abfd, info_ptr); |
d03ba2a1 | 2061 | else |
5e38c3b8 | 2062 | abbrev_offset = read_8_bytes (abfd, info_ptr); |
d03ba2a1 | 2063 | info_ptr += offset_size; |
252b5132 RH |
2064 | addr_size = read_1_byte (abfd, info_ptr); |
2065 | info_ptr += 1; | |
2066 | ||
2067 | if (version != 2) | |
2068 | { | |
f46c2da6 | 2069 | (*_bfd_error_handler) (_("Dwarf Error: found dwarf version '%u', this reader only handles version 2 information."), version); |
252b5132 RH |
2070 | bfd_set_error (bfd_error_bad_value); |
2071 | return 0; | |
2072 | } | |
2073 | ||
2074 | if (addr_size > sizeof (bfd_vma)) | |
2075 | { | |
2076 | (*_bfd_error_handler) (_("Dwarf Error: found address size '%u', this reader can not handle sizes greater than '%u'."), | |
2077 | addr_size, | |
f46c2da6 | 2078 | (unsigned int) sizeof (bfd_vma)); |
252b5132 RH |
2079 | bfd_set_error (bfd_error_bad_value); |
2080 | return 0; | |
2081 | } | |
2082 | ||
ecb651f0 | 2083 | if (addr_size != 2 && addr_size != 4 && addr_size != 8) |
252b5132 | 2084 | { |
f5a3e38a | 2085 | (*_bfd_error_handler) ("Dwarf Error: found address size '%u', this reader can only handle address sizes '2', '4' and '8'.", addr_size); |
252b5132 RH |
2086 | bfd_set_error (bfd_error_bad_value); |
2087 | return 0; | |
2088 | } | |
2089 | ||
a092b084 | 2090 | /* Read the abbrevs for this compilation unit into a table. */ |
51db3708 | 2091 | abbrevs = read_abbrevs (abfd, abbrev_offset, stash); |
252b5132 RH |
2092 | if (! abbrevs) |
2093 | return 0; | |
2094 | ||
2095 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2096 | info_ptr += bytes_read; | |
2097 | if (! abbrev_number) | |
2098 | { | |
f46c2da6 | 2099 | (*_bfd_error_handler) (_("Dwarf Error: Bad abbrev number: %u."), |
252b5132 RH |
2100 | abbrev_number); |
2101 | bfd_set_error (bfd_error_bad_value); | |
2102 | return 0; | |
2103 | } | |
2104 | ||
2105 | abbrev = lookup_abbrev (abbrev_number, abbrevs); | |
2106 | if (! abbrev) | |
2107 | { | |
f46c2da6 | 2108 | (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."), |
252b5132 RH |
2109 | abbrev_number); |
2110 | bfd_set_error (bfd_error_bad_value); | |
2111 | return 0; | |
2112 | } | |
98591c73 | 2113 | |
dc810e39 | 2114 | amt = sizeof (struct comp_unit); |
818a27ac | 2115 | unit = bfd_zalloc (abfd, amt); |
252b5132 | 2116 | unit->abfd = abfd; |
98591c73 | 2117 | unit->addr_size = addr_size; |
d03ba2a1 | 2118 | unit->offset_size = offset_size; |
252b5132 RH |
2119 | unit->abbrevs = abbrevs; |
2120 | unit->end_ptr = end_ptr; | |
d03ba2a1 | 2121 | unit->stash = stash; |
c0c28ab8 | 2122 | unit->info_ptr_unit = info_ptr_unit; |
252b5132 RH |
2123 | |
2124 | for (i = 0; i < abbrev->num_attrs; ++i) | |
2125 | { | |
2126 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr); | |
2127 | ||
2128 | /* Store the data if it is of an attribute we want to keep in a | |
2129 | partial symbol table. */ | |
2130 | switch (attr.name) | |
2131 | { | |
2132 | case DW_AT_stmt_list: | |
2133 | unit->stmtlist = 1; | |
482e2e37 | 2134 | unit->line_offset = attr.u.val; |
252b5132 RH |
2135 | break; |
2136 | ||
2137 | case DW_AT_name: | |
482e2e37 | 2138 | unit->name = attr.u.str; |
252b5132 RH |
2139 | break; |
2140 | ||
2141 | case DW_AT_low_pc: | |
a13afe8e FF |
2142 | low_pc = attr.u.val; |
2143 | /* If the compilation unit DIE has a DW_AT_low_pc attribute, | |
2144 | this is the base address to use when reading location | |
2145 | lists or range lists. */ | |
2146 | unit->base_address = low_pc; | |
252b5132 RH |
2147 | break; |
2148 | ||
2149 | case DW_AT_high_pc: | |
a13afe8e FF |
2150 | high_pc = attr.u.val; |
2151 | break; | |
2152 | ||
2153 | case DW_AT_ranges: | |
709d67f1 | 2154 | read_rangelist (unit, &unit->arange, attr.u.val); |
252b5132 RH |
2155 | break; |
2156 | ||
2157 | case DW_AT_comp_dir: | |
2158 | { | |
f075ee0c | 2159 | char *comp_dir = attr.u.str; |
252b5132 RH |
2160 | if (comp_dir) |
2161 | { | |
2162 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2163 | directory, get rid of it. */ | |
818a27ac | 2164 | char *cp = strchr (comp_dir, ':'); |
252b5132 RH |
2165 | |
2166 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2167 | comp_dir = cp + 1; | |
2168 | } | |
2169 | unit->comp_dir = comp_dir; | |
2170 | break; | |
2171 | } | |
2172 | ||
2173 | default: | |
2174 | break; | |
2175 | } | |
2176 | } | |
a13afe8e | 2177 | if (high_pc != 0) |
709d67f1 AM |
2178 | { |
2179 | arange_add (unit->abfd, &unit->arange, low_pc, high_pc); | |
2180 | } | |
252b5132 RH |
2181 | |
2182 | unit->first_child_die_ptr = info_ptr; | |
2183 | return unit; | |
2184 | } | |
2185 | ||
6dd55cb7 L |
2186 | /* Return TRUE if UNIT may contain the address given by ADDR. When |
2187 | there are functions written entirely with inline asm statements, the | |
2188 | range info in the compilation unit header may not be correct. We | |
2189 | need to consult the line info table to see if a compilation unit | |
2190 | really contains the given address. */ | |
252b5132 | 2191 | |
b34976b6 | 2192 | static bfd_boolean |
818a27ac | 2193 | comp_unit_contains_address (struct comp_unit *unit, bfd_vma addr) |
252b5132 | 2194 | { |
709d67f1 AM |
2195 | struct arange *arange; |
2196 | ||
2197 | if (unit->error) | |
2198 | return FALSE; | |
2199 | ||
2200 | arange = &unit->arange; | |
2201 | do | |
2202 | { | |
2203 | if (addr >= arange->low && addr < arange->high) | |
2204 | return TRUE; | |
2205 | arange = arange->next; | |
2206 | } | |
2207 | while (arange); | |
2208 | ||
2209 | return FALSE; | |
252b5132 RH |
2210 | } |
2211 | ||
252b5132 RH |
2212 | /* If UNIT contains ADDR, set the output parameters to the values for |
2213 | the line containing ADDR. The output parameters, FILENAME_PTR, | |
2214 | FUNCTIONNAME_PTR, and LINENUMBER_PTR, are pointers to the objects | |
98591c73 | 2215 | to be filled in. |
252b5132 | 2216 | |
ab3acfbe | 2217 | Return TRUE if UNIT contains ADDR, and no errors were encountered; |
b34976b6 | 2218 | FALSE otherwise. */ |
252b5132 | 2219 | |
b34976b6 | 2220 | static bfd_boolean |
818a27ac AM |
2221 | comp_unit_find_nearest_line (struct comp_unit *unit, |
2222 | bfd_vma addr, | |
2223 | const char **filename_ptr, | |
2224 | const char **functionname_ptr, | |
2225 | unsigned int *linenumber_ptr, | |
2226 | struct dwarf2_debug *stash) | |
252b5132 | 2227 | { |
b34976b6 AM |
2228 | bfd_boolean line_p; |
2229 | bfd_boolean func_p; | |
1ee24f27 | 2230 | struct funcinfo *function; |
98591c73 | 2231 | |
252b5132 | 2232 | if (unit->error) |
b34976b6 | 2233 | return FALSE; |
252b5132 RH |
2234 | |
2235 | if (! unit->line_table) | |
2236 | { | |
2237 | if (! unit->stmtlist) | |
2238 | { | |
2239 | unit->error = 1; | |
b34976b6 | 2240 | return FALSE; |
252b5132 | 2241 | } |
98591c73 | 2242 | |
51db3708 | 2243 | unit->line_table = decode_line_info (unit, stash); |
252b5132 RH |
2244 | |
2245 | if (! unit->line_table) | |
2246 | { | |
2247 | unit->error = 1; | |
b34976b6 | 2248 | return FALSE; |
252b5132 | 2249 | } |
98591c73 | 2250 | |
3f5864e1 | 2251 | if (unit->first_child_die_ptr < unit->end_ptr |
5420f73d | 2252 | && ! scan_unit_for_symbols (unit)) |
252b5132 RH |
2253 | { |
2254 | unit->error = 1; | |
b34976b6 | 2255 | return FALSE; |
252b5132 RH |
2256 | } |
2257 | } | |
2258 | ||
1ee24f27 | 2259 | function = NULL; |
4ab527b0 | 2260 | func_p = lookup_address_in_function_table (unit, addr, |
e2f6d277 | 2261 | &function, functionname_ptr); |
4ab527b0 FF |
2262 | if (func_p && (function->tag == DW_TAG_inlined_subroutine)) |
2263 | stash->inliner_chain = function; | |
e2f6d277 NC |
2264 | line_p = lookup_address_in_line_info_table (unit->line_table, addr, |
2265 | function, filename_ptr, | |
252b5132 | 2266 | linenumber_ptr); |
b34976b6 | 2267 | return line_p || func_p; |
252b5132 RH |
2268 | } |
2269 | ||
bd210d54 NC |
2270 | /* Check to see if line info is already decoded in a comp_unit. |
2271 | If not, decode it. Returns TRUE if no errors were encountered; | |
5420f73d L |
2272 | FALSE otherwise. */ |
2273 | ||
2274 | static bfd_boolean | |
bd210d54 NC |
2275 | comp_unit_maybe_decode_line_info (struct comp_unit *unit, |
2276 | struct dwarf2_debug *stash) | |
5420f73d L |
2277 | { |
2278 | if (unit->error) | |
2279 | return FALSE; | |
2280 | ||
2281 | if (! unit->line_table) | |
2282 | { | |
2283 | if (! unit->stmtlist) | |
2284 | { | |
2285 | unit->error = 1; | |
2286 | return FALSE; | |
2287 | } | |
2288 | ||
2289 | unit->line_table = decode_line_info (unit, stash); | |
2290 | ||
2291 | if (! unit->line_table) | |
2292 | { | |
2293 | unit->error = 1; | |
2294 | return FALSE; | |
2295 | } | |
2296 | ||
2297 | if (unit->first_child_die_ptr < unit->end_ptr | |
2298 | && ! scan_unit_for_symbols (unit)) | |
2299 | { | |
2300 | unit->error = 1; | |
2301 | return FALSE; | |
2302 | } | |
2303 | } | |
2304 | ||
bd210d54 NC |
2305 | return TRUE; |
2306 | } | |
2307 | ||
2308 | /* If UNIT contains SYM at ADDR, set the output parameters to the | |
2309 | values for the line containing SYM. The output parameters, | |
2310 | FILENAME_PTR, and LINENUMBER_PTR, are pointers to the objects to be | |
2311 | filled in. | |
2312 | ||
2313 | Return TRUE if UNIT contains SYM, and no errors were encountered; | |
2314 | FALSE otherwise. */ | |
2315 | ||
2316 | static bfd_boolean | |
2317 | comp_unit_find_line (struct comp_unit *unit, | |
2318 | asymbol *sym, | |
2319 | bfd_vma addr, | |
2320 | const char **filename_ptr, | |
2321 | unsigned int *linenumber_ptr, | |
2322 | struct dwarf2_debug *stash) | |
2323 | { | |
2324 | if (!comp_unit_maybe_decode_line_info (unit, stash)) | |
2325 | return FALSE; | |
2326 | ||
5420f73d L |
2327 | if (sym->flags & BSF_FUNCTION) |
2328 | return lookup_symbol_in_function_table (unit, sym, addr, | |
2329 | filename_ptr, | |
2330 | linenumber_ptr); | |
bd210d54 NC |
2331 | |
2332 | return lookup_symbol_in_variable_table (unit, sym, addr, | |
2333 | filename_ptr, | |
2334 | linenumber_ptr); | |
2335 | } | |
2336 | ||
2337 | static struct funcinfo * | |
2338 | reverse_funcinfo_list (struct funcinfo *head) | |
2339 | { | |
2340 | struct funcinfo *rhead; | |
2341 | struct funcinfo *temp; | |
2342 | ||
2343 | for (rhead = NULL; head; head = temp) | |
2344 | { | |
2345 | temp = head->prev_func; | |
2346 | head->prev_func = rhead; | |
2347 | rhead = head; | |
2348 | } | |
2349 | return rhead; | |
2350 | } | |
2351 | ||
2352 | static struct varinfo * | |
2353 | reverse_varinfo_list (struct varinfo *head) | |
2354 | { | |
2355 | struct varinfo *rhead; | |
2356 | struct varinfo *temp; | |
2357 | ||
2358 | for (rhead = NULL; head; head = temp) | |
2359 | { | |
2360 | temp = head->prev_var; | |
2361 | head->prev_var = rhead; | |
2362 | rhead = head; | |
2363 | } | |
2364 | return rhead; | |
2365 | } | |
2366 | ||
2367 | /* Extract all interesting funcinfos and varinfos of a compilation | |
2368 | unit into hash tables for faster lookup. Returns TRUE if no | |
2369 | errors were enountered; FALSE otherwise. */ | |
2370 | ||
2371 | static bfd_boolean | |
2372 | comp_unit_hash_info (struct dwarf2_debug *stash, | |
2373 | struct comp_unit *unit, | |
2374 | struct info_hash_table *funcinfo_hash_table, | |
2375 | struct info_hash_table *varinfo_hash_table) | |
2376 | { | |
2377 | struct funcinfo* each_func; | |
2378 | struct varinfo* each_var; | |
2379 | bfd_boolean okay = TRUE; | |
2380 | ||
2381 | BFD_ASSERT (stash->info_hash_status != STASH_INFO_HASH_DISABLED); | |
2382 | ||
2383 | if (!comp_unit_maybe_decode_line_info (unit, stash)) | |
2384 | return FALSE; | |
2385 | ||
2386 | BFD_ASSERT (!unit->cached); | |
2387 | ||
2388 | /* To preserve the original search order, we went to visit the function | |
2389 | infos in the reversed order of the list. However, making the list | |
2390 | bi-directional use quite a bit of extra memory. So we reverse | |
2391 | the list first, traverse the list in the now reversed order and | |
2392 | finally reverse the list again to get back the original order. */ | |
2393 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
2394 | for (each_func = unit->function_table; | |
2395 | each_func && okay; | |
2396 | each_func = each_func->prev_func) | |
2397 | { | |
2398 | /* Skip nameless functions. */ | |
2399 | if (each_func->name) | |
2400 | /* There is no need to copy name string into hash table as | |
2401 | name string is either in the dwarf string buffer or | |
2402 | info in the stash. */ | |
2403 | okay = insert_info_hash_table (funcinfo_hash_table, each_func->name, | |
2404 | (void*) each_func, FALSE); | |
2405 | } | |
2406 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
2407 | if (!okay) | |
2408 | return FALSE; | |
2409 | ||
2410 | /* We do the same for variable infos. */ | |
2411 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
2412 | for (each_var = unit->variable_table; | |
2413 | each_var && okay; | |
2414 | each_var = each_var->prev_var) | |
2415 | { | |
2416 | /* Skip stack vars and vars with no files or names. */ | |
2417 | if (each_var->stack == 0 | |
2418 | && each_var->file != NULL | |
2419 | && each_var->name != NULL) | |
2420 | /* There is no need to copy name string into hash table as | |
2421 | name string is either in the dwarf string buffer or | |
2422 | info in the stash. */ | |
2423 | okay = insert_info_hash_table (varinfo_hash_table, each_var->name, | |
2424 | (void*) each_var, FALSE); | |
2425 | } | |
2426 | ||
2427 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
2428 | unit->cached = TRUE; | |
2429 | return okay; | |
5420f73d L |
2430 | } |
2431 | ||
e2f6d277 NC |
2432 | /* Locate a section in a BFD containing debugging info. The search starts |
2433 | from the section after AFTER_SEC, or from the first section in the BFD if | |
2434 | AFTER_SEC is NULL. The search works by examining the names of the | |
2435 | sections. There are two permissiable names. The first is .debug_info. | |
2436 | This is the standard DWARF2 name. The second is a prefix .gnu.linkonce.wi. | |
2437 | This is a variation on the .debug_info section which has a checksum | |
2438 | describing the contents appended onto the name. This allows the linker to | |
2439 | identify and discard duplicate debugging sections for different | |
2440 | compilation units. */ | |
a092b084 | 2441 | #define DWARF2_DEBUG_INFO ".debug_info" |
1b315056 | 2442 | #define DWARF2_COMPRESSED_DEBUG_INFO ".zdebug_info" |
a092b084 NC |
2443 | #define GNU_LINKONCE_INFO ".gnu.linkonce.wi." |
2444 | ||
2445 | static asection * | |
818a27ac | 2446 | find_debug_info (bfd *abfd, asection *after_sec) |
a092b084 NC |
2447 | { |
2448 | asection * msec; | |
2449 | ||
0d161102 | 2450 | msec = after_sec != NULL ? after_sec->next : abfd->sections; |
a092b084 NC |
2451 | |
2452 | while (msec) | |
2453 | { | |
2454 | if (strcmp (msec->name, DWARF2_DEBUG_INFO) == 0) | |
2455 | return msec; | |
2456 | ||
1b315056 CS |
2457 | if (strcmp (msec->name, DWARF2_COMPRESSED_DEBUG_INFO) == 0) |
2458 | return msec; | |
2459 | ||
0112cd26 | 2460 | if (CONST_STRNEQ (msec->name, GNU_LINKONCE_INFO)) |
a092b084 NC |
2461 | return msec; |
2462 | ||
2463 | msec = msec->next; | |
2464 | } | |
2465 | ||
2466 | return NULL; | |
2467 | } | |
2468 | ||
d4c32a81 L |
2469 | /* Unset vmas for loadable sections in STASH. */ |
2470 | ||
2471 | static void | |
2472 | unset_sections (struct dwarf2_debug *stash) | |
2473 | { | |
2474 | unsigned int i; | |
2475 | struct loadable_section *p; | |
2476 | ||
2477 | i = stash->loadable_section_count; | |
2478 | p = stash->loadable_sections; | |
2479 | for (; i > 0; i--, p++) | |
2480 | p->section->vma = 0; | |
2481 | } | |
2482 | ||
2483 | /* Set unique vmas for loadable sections in ABFD and save vmas in | |
2484 | STASH for unset_sections. */ | |
35ccda9e L |
2485 | |
2486 | static bfd_boolean | |
d4c32a81 | 2487 | place_sections (bfd *abfd, struct dwarf2_debug *stash) |
35ccda9e | 2488 | { |
d4c32a81 L |
2489 | struct loadable_section *p; |
2490 | unsigned int i; | |
2491 | ||
2492 | if (stash->loadable_section_count != 0) | |
35ccda9e | 2493 | { |
d4c32a81 L |
2494 | i = stash->loadable_section_count; |
2495 | p = stash->loadable_sections; | |
2496 | for (; i > 0; i--, p++) | |
2497 | p->section->vma = p->adj_vma; | |
2498 | } | |
2499 | else | |
2500 | { | |
2501 | asection *sect; | |
2502 | bfd_vma last_vma = 0; | |
2503 | bfd_size_type amt; | |
2504 | struct loadable_section *p; | |
35ccda9e | 2505 | |
d4c32a81 L |
2506 | i = 0; |
2507 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
35ccda9e | 2508 | { |
d4c32a81 L |
2509 | bfd_size_type sz; |
2510 | ||
2511 | if (sect->vma != 0 || (sect->flags & SEC_LOAD) == 0) | |
2512 | continue; | |
2513 | ||
2514 | sz = sect->rawsize ? sect->rawsize : sect->size; | |
2515 | if (sz == 0) | |
2516 | continue; | |
2517 | ||
2518 | i++; | |
2519 | } | |
2520 | ||
2521 | amt = i * sizeof (struct loadable_section); | |
2522 | p = (struct loadable_section *) bfd_zalloc (abfd, amt); | |
2523 | if (! p) | |
2524 | return FALSE; | |
2525 | ||
2526 | stash->loadable_sections = p; | |
2527 | stash->loadable_section_count = i; | |
2528 | ||
2529 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
2530 | { | |
2531 | bfd_size_type sz; | |
2532 | ||
2533 | if (sect->vma != 0 || (sect->flags & SEC_LOAD) == 0) | |
2534 | continue; | |
2535 | ||
2536 | sz = sect->rawsize ? sect->rawsize : sect->size; | |
2537 | if (sz == 0) | |
2538 | continue; | |
2539 | ||
2540 | p->section = sect; | |
2541 | if (last_vma != 0) | |
2542 | { | |
2543 | /* Align the new address to the current section | |
2544 | alignment. */ | |
2545 | last_vma = ((last_vma | |
2546 | + ~((bfd_vma) -1 << sect->alignment_power)) | |
2547 | & ((bfd_vma) -1 << sect->alignment_power)); | |
2548 | sect->vma = last_vma; | |
2549 | } | |
2550 | p->adj_vma = sect->vma; | |
2551 | last_vma += sect->vma + sz; | |
2552 | ||
2553 | p++; | |
35ccda9e L |
2554 | } |
2555 | } | |
2556 | ||
2557 | return TRUE; | |
2558 | } | |
2559 | ||
bd210d54 NC |
2560 | /* Look up a funcinfo by name using the given info hash table. If found, |
2561 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
2562 | ||
2563 | This function returns TRUE if a funcinfo that matches the given symbol | |
2564 | and address is found with any error; otherwise it returns FALSE. */ | |
2565 | ||
2566 | static bfd_boolean | |
2567 | info_hash_lookup_funcinfo (struct info_hash_table *hash_table, | |
2568 | asymbol *sym, | |
2569 | bfd_vma addr, | |
2570 | const char **filename_ptr, | |
2571 | unsigned int *linenumber_ptr) | |
2572 | { | |
2573 | struct funcinfo* each_func; | |
2574 | struct funcinfo* best_fit = NULL; | |
2575 | struct info_list_node *node; | |
2576 | struct arange *arange; | |
2577 | const char *name = bfd_asymbol_name (sym); | |
2578 | asection *sec = bfd_get_section (sym); | |
2579 | ||
2580 | for (node = lookup_info_hash_table (hash_table, name); | |
2581 | node; | |
2582 | node = node->next) | |
2583 | { | |
2584 | each_func = node->info; | |
2585 | for (arange = &each_func->arange; | |
2586 | arange; | |
2587 | arange = arange->next) | |
2588 | { | |
2589 | if ((!each_func->sec || each_func->sec == sec) | |
2590 | && addr >= arange->low | |
2591 | && addr < arange->high | |
2592 | && (!best_fit | |
2593 | || ((arange->high - arange->low) | |
2594 | < (best_fit->arange.high - best_fit->arange.low)))) | |
2595 | best_fit = each_func; | |
2596 | } | |
2597 | } | |
2598 | ||
2599 | if (best_fit) | |
2600 | { | |
2601 | best_fit->sec = sec; | |
2602 | *filename_ptr = best_fit->file; | |
2603 | *linenumber_ptr = best_fit->line; | |
2604 | return TRUE; | |
2605 | } | |
2606 | ||
2607 | return FALSE; | |
2608 | } | |
2609 | ||
2610 | /* Look up a varinfo by name using the given info hash table. If found, | |
2611 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
2612 | ||
2613 | This function returns TRUE if a varinfo that matches the given symbol | |
2614 | and address is found with any error; otherwise it returns FALSE. */ | |
2615 | ||
2616 | static bfd_boolean | |
2617 | info_hash_lookup_varinfo (struct info_hash_table *hash_table, | |
2618 | asymbol *sym, | |
2619 | bfd_vma addr, | |
2620 | const char **filename_ptr, | |
2621 | unsigned int *linenumber_ptr) | |
2622 | { | |
2623 | const char *name = bfd_asymbol_name (sym); | |
2624 | asection *sec = bfd_get_section (sym); | |
2625 | struct varinfo* each; | |
2626 | struct info_list_node *node; | |
2627 | ||
2628 | for (node = lookup_info_hash_table (hash_table, name); | |
2629 | node; | |
2630 | node = node->next) | |
2631 | { | |
2632 | each = node->info; | |
2633 | if (each->addr == addr | |
2634 | && (!each->sec || each->sec == sec)) | |
2635 | { | |
2636 | each->sec = sec; | |
2637 | *filename_ptr = each->file; | |
2638 | *linenumber_ptr = each->line; | |
2639 | return TRUE; | |
2640 | } | |
2641 | } | |
2642 | ||
2643 | return FALSE; | |
2644 | } | |
2645 | ||
2646 | /* Update the funcinfo and varinfo info hash tables if they are | |
2647 | not up to date. Returns TRUE if there is no error; otherwise | |
2648 | returns FALSE and disable the info hash tables. */ | |
2649 | ||
2650 | static bfd_boolean | |
2651 | stash_maybe_update_info_hash_tables (struct dwarf2_debug *stash) | |
2652 | { | |
2653 | struct comp_unit *each; | |
2654 | ||
2655 | /* Exit if hash tables are up-to-date. */ | |
2656 | if (stash->all_comp_units == stash->hash_units_head) | |
2657 | return TRUE; | |
2658 | ||
2659 | if (stash->hash_units_head) | |
2660 | each = stash->hash_units_head->prev_unit; | |
2661 | else | |
2662 | each = stash->last_comp_unit; | |
2663 | ||
2664 | while (each) | |
2665 | { | |
2666 | if (!comp_unit_hash_info (stash, each, stash->funcinfo_hash_table, | |
2667 | stash->varinfo_hash_table)) | |
2668 | { | |
2669 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
2670 | return FALSE; | |
2671 | } | |
2672 | each = each->prev_unit; | |
2673 | } | |
2674 | ||
2675 | stash->hash_units_head = stash->all_comp_units; | |
2676 | return TRUE; | |
2677 | } | |
2678 | ||
2679 | /* Check consistency of info hash tables. This is for debugging only. */ | |
2680 | ||
2681 | static void ATTRIBUTE_UNUSED | |
2682 | stash_verify_info_hash_table (struct dwarf2_debug *stash) | |
2683 | { | |
2684 | struct comp_unit *each_unit; | |
2685 | struct funcinfo *each_func; | |
2686 | struct varinfo *each_var; | |
2687 | struct info_list_node *node; | |
2688 | bfd_boolean found; | |
2689 | ||
2690 | for (each_unit = stash->all_comp_units; | |
2691 | each_unit; | |
2692 | each_unit = each_unit->next_unit) | |
2693 | { | |
2694 | for (each_func = each_unit->function_table; | |
2695 | each_func; | |
2696 | each_func = each_func->prev_func) | |
2697 | { | |
2698 | if (!each_func->name) | |
2699 | continue; | |
2700 | node = lookup_info_hash_table (stash->funcinfo_hash_table, | |
2701 | each_func->name); | |
2702 | BFD_ASSERT (node); | |
2703 | found = FALSE; | |
2704 | while (node && !found) | |
2705 | { | |
2706 | found = node->info == each_func; | |
2707 | node = node->next; | |
2708 | } | |
2709 | BFD_ASSERT (found); | |
2710 | } | |
2711 | ||
2712 | for (each_var = each_unit->variable_table; | |
2713 | each_var; | |
2714 | each_var = each_var->prev_var) | |
2715 | { | |
2716 | if (!each_var->name || !each_var->file || each_var->stack) | |
2717 | continue; | |
2718 | node = lookup_info_hash_table (stash->varinfo_hash_table, | |
2719 | each_var->name); | |
2720 | BFD_ASSERT (node); | |
2721 | found = FALSE; | |
2722 | while (node && !found) | |
2723 | { | |
2724 | found = node->info == each_var; | |
2725 | node = node->next; | |
2726 | } | |
2727 | BFD_ASSERT (found); | |
2728 | } | |
2729 | } | |
2730 | } | |
2731 | ||
2732 | /* Check to see if we want to enable the info hash tables, which consume | |
2733 | quite a bit of memory. Currently we only check the number times | |
2734 | bfd_dwarf2_find_line is called. In the future, we may also want to | |
2735 | take the number of symbols into account. */ | |
2736 | ||
2737 | static void | |
2738 | stash_maybe_enable_info_hash_tables (bfd *abfd, struct dwarf2_debug *stash) | |
2739 | { | |
2740 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_OFF); | |
2741 | ||
2742 | if (stash->info_hash_count++ < STASH_INFO_HASH_TRIGGER) | |
2743 | return; | |
2744 | ||
2745 | /* FIXME: Maybe we should check the reduce_memory_overheads | |
2746 | and optimize fields in the bfd_link_info structure ? */ | |
2747 | ||
2748 | /* Create hash tables. */ | |
2749 | stash->funcinfo_hash_table = create_info_hash_table (abfd); | |
2750 | stash->varinfo_hash_table = create_info_hash_table (abfd); | |
2751 | if (!stash->funcinfo_hash_table || !stash->varinfo_hash_table) | |
2752 | { | |
2753 | /* Turn off info hashes if any allocation above fails. */ | |
2754 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
2755 | return; | |
2756 | } | |
2757 | /* We need a forced update so that the info hash tables will | |
2758 | be created even though there is no compilation unit. That | |
2759 | happens if STASH_INFO_HASH_TRIGGER is 0. */ | |
2760 | stash_maybe_update_info_hash_tables (stash); | |
2761 | stash->info_hash_status = STASH_INFO_HASH_ON; | |
2762 | } | |
2763 | ||
2764 | /* Find the file and line associated with a symbol and address using the | |
2765 | info hash tables of a stash. If there is a match, the function returns | |
2766 | TRUE and update the locations pointed to by filename_ptr and linenumber_ptr; | |
2767 | otherwise it returns FALSE. */ | |
2768 | ||
2769 | static bfd_boolean | |
2770 | stash_find_line_fast (struct dwarf2_debug *stash, | |
2771 | asymbol *sym, | |
2772 | bfd_vma addr, | |
2773 | const char **filename_ptr, | |
2774 | unsigned int *linenumber_ptr) | |
2775 | { | |
2776 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_ON); | |
2777 | ||
2778 | if (sym->flags & BSF_FUNCTION) | |
2779 | return info_hash_lookup_funcinfo (stash->funcinfo_hash_table, sym, addr, | |
2780 | filename_ptr, linenumber_ptr); | |
2781 | return info_hash_lookup_varinfo (stash->varinfo_hash_table, sym, addr, | |
2782 | filename_ptr, linenumber_ptr); | |
2783 | } | |
2784 | ||
bec42b15 NC |
2785 | /* Find the source code location of SYMBOL. If SYMBOL is NULL |
2786 | then find the nearest source code location corresponding to | |
2787 | the address SECTION + OFFSET. | |
2788 | Returns TRUE if the line is found without error and fills in | |
2789 | FILENAME_PTR and LINENUMBER_PTR. In the case where SYMBOL was | |
2790 | NULL the FUNCTIONNAME_PTR is also filled in. | |
2791 | SYMBOLS contains the symbol table for ABFD. | |
2792 | ADDR_SIZE is the number of bytes in the initial .debug_info length | |
2793 | field and in the abbreviation offset, or zero to indicate that the | |
2794 | default value should be used. */ | |
252b5132 | 2795 | |
bec42b15 NC |
2796 | static bfd_boolean |
2797 | find_line (bfd *abfd, | |
2798 | asection *section, | |
2799 | bfd_vma offset, | |
2800 | asymbol *symbol, | |
2801 | asymbol **symbols, | |
2802 | const char **filename_ptr, | |
2803 | const char **functionname_ptr, | |
2804 | unsigned int *linenumber_ptr, | |
2805 | unsigned int addr_size, | |
2806 | void **pinfo) | |
252b5132 RH |
2807 | { |
2808 | /* Read each compilation unit from the section .debug_info, and check | |
2809 | to see if it contains the address we are searching for. If yes, | |
2810 | lookup the address, and return the line number info. If no, go | |
98591c73 | 2811 | on to the next compilation unit. |
252b5132 RH |
2812 | |
2813 | We keep a list of all the previously read compilation units, and | |
98591c73 | 2814 | a pointer to the next un-read compilation unit. Check the |
a092b084 | 2815 | previously read units before reading more. */ |
1ba54ee0 | 2816 | struct dwarf2_debug *stash; |
a092b084 | 2817 | /* What address are we looking for? */ |
1ba54ee0 | 2818 | bfd_vma addr; |
252b5132 | 2819 | struct comp_unit* each; |
d4c32a81 | 2820 | bfd_vma found = FALSE; |
bec42b15 | 2821 | bfd_boolean do_line; |
d4c32a81 | 2822 | |
1ba54ee0 | 2823 | stash = *pinfo; |
d4c32a81 L |
2824 | |
2825 | if (! stash) | |
2826 | { | |
2827 | bfd_size_type amt = sizeof (struct dwarf2_debug); | |
2828 | ||
2829 | stash = bfd_zalloc (abfd, amt); | |
2830 | if (! stash) | |
2831 | return FALSE; | |
2832 | } | |
2833 | ||
2834 | /* In a relocatable file, 2 functions may have the same address. | |
2835 | We change the section vma so that they won't overlap. */ | |
2836 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
2837 | { | |
2838 | if (! place_sections (abfd, stash)) | |
2839 | return FALSE; | |
2840 | } | |
2841 | ||
bec42b15 NC |
2842 | do_line = (section == NULL |
2843 | && offset == 0 | |
2844 | && functionname_ptr == NULL | |
2845 | && symbol != NULL); | |
2846 | if (do_line) | |
2847 | { | |
2848 | addr = symbol->value; | |
2849 | section = bfd_get_section (symbol); | |
2850 | } | |
2851 | else if (section != NULL | |
2852 | && functionname_ptr != NULL | |
2853 | && symbol == NULL) | |
2854 | addr = offset; | |
2855 | else | |
2856 | abort (); | |
2857 | ||
1ba54ee0 | 2858 | if (section->output_section) |
6dd55cb7 | 2859 | addr += section->output_section->vma + section->output_offset; |
1ba54ee0 | 2860 | else |
6dd55cb7 | 2861 | addr += section->vma; |
252b5132 | 2862 | *filename_ptr = NULL; |
6b33789f NC |
2863 | if (! do_line) |
2864 | *functionname_ptr = NULL; | |
252b5132 RH |
2865 | *linenumber_ptr = 0; |
2866 | ||
d4c32a81 | 2867 | if (! *pinfo) |
252b5132 | 2868 | { |
0d161102 | 2869 | bfd *debug_bfd; |
dc810e39 | 2870 | bfd_size_type total_size; |
252b5132 | 2871 | asection *msec; |
252b5132 | 2872 | |
818a27ac | 2873 | *pinfo = stash; |
3fde5a36 | 2874 | |
a092b084 | 2875 | msec = find_debug_info (abfd, NULL); |
0d161102 NC |
2876 | if (msec == NULL) |
2877 | { | |
0d4a1476 | 2878 | char * debug_filename = bfd_follow_gnu_debuglink (abfd, DEBUGDIR); |
0d161102 NC |
2879 | |
2880 | if (debug_filename == NULL) | |
2881 | /* No dwarf2 info, and no gnu_debuglink to follow. | |
2882 | Note that at this point the stash has been allocated, but | |
2883 | contains zeros. This lets future calls to this function | |
2884 | fail more quickly. */ | |
2885 | goto done; | |
2886 | ||
2887 | if ((debug_bfd = bfd_openr (debug_filename, NULL)) == NULL | |
2888 | || ! bfd_check_format (debug_bfd, bfd_object) | |
2889 | || (msec = find_debug_info (debug_bfd, NULL)) == NULL) | |
2890 | { | |
2891 | if (debug_bfd) | |
2892 | bfd_close (debug_bfd); | |
2893 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
2894 | free (debug_filename); | |
2895 | goto done; | |
2896 | } | |
2897 | } | |
2898 | else | |
2899 | debug_bfd = abfd; | |
a092b084 | 2900 | |
1b315056 CS |
2901 | /* There can be more than one DWARF2 info section in a BFD these |
2902 | days. First handle the easy case when there's only one. If | |
2903 | there's more than one, try case two: none of the sections is | |
2904 | compressed. In that case, read them all in and produce one | |
2905 | large stash. We do this in two passes - in the first pass we | |
2906 | just accumulate the section sizes, and in the second pass we | |
2907 | read in the section's contents. (The allows us to avoid | |
2908 | reallocing the data as we add sections to the stash.) If | |
2909 | some or all sections are compressed, then do things the slow | |
2910 | way, with a bunch of reallocs. */ | |
2911 | ||
2912 | if (! find_debug_info (debug_bfd, msec)) | |
2913 | { | |
2914 | /* Case 1: only one info section. */ | |
2915 | total_size = msec->size; | |
2916 | if (! read_section (debug_bfd, ".debug_info", ".zdebug_info", | |
2917 | symbols, 0, | |
2918 | &stash->info_ptr, &total_size)) | |
2919 | goto done; | |
2920 | stash->info_ptr_end = stash->info_ptr + total_size; | |
2921 | } | |
2922 | else | |
2923 | { | |
2924 | int all_uncompressed = 1; | |
2925 | for (total_size = 0; msec; msec = find_debug_info (debug_bfd, msec)) | |
2926 | { | |
2927 | total_size += msec->size; | |
2928 | if (strcmp (msec->name, DWARF2_COMPRESSED_DEBUG_INFO) == 0) | |
2929 | all_uncompressed = 0; | |
2930 | } | |
2931 | if (all_uncompressed) | |
2932 | { | |
2933 | /* Case 2: multiple sections, but none is compressed. */ | |
2934 | stash->info_ptr = bfd_malloc (total_size); | |
2935 | if (stash->info_ptr == NULL) | |
2936 | goto done; | |
2937 | ||
2938 | stash->info_ptr_end = stash->info_ptr; | |
2939 | ||
2940 | for (msec = find_debug_info (debug_bfd, NULL); | |
2941 | msec; | |
2942 | msec = find_debug_info (debug_bfd, msec)) | |
2943 | { | |
2944 | bfd_size_type size; | |
2945 | bfd_size_type start; | |
2946 | ||
2947 | size = msec->size; | |
2948 | if (size == 0) | |
2949 | continue; | |
2950 | ||
2951 | start = stash->info_ptr_end - stash->info_ptr; | |
2952 | ||
2953 | if ((bfd_simple_get_relocated_section_contents | |
2954 | (debug_bfd, msec, stash->info_ptr + start, symbols)) | |
2955 | == NULL) | |
2956 | continue; | |
2957 | ||
2958 | stash->info_ptr_end = stash->info_ptr + start + size; | |
2959 | } | |
2960 | ||
2961 | BFD_ASSERT (stash->info_ptr_end == stash->info_ptr + total_size); | |
2962 | } | |
2963 | else | |
2964 | { | |
2965 | /* Case 3: multiple sections, some or all compressed. */ | |
2966 | stash->info_ptr = bfd_malloc (1); | |
2967 | stash->info_ptr_end = stash->info_ptr; | |
2968 | for (msec = find_debug_info (debug_bfd, NULL); | |
2969 | msec; | |
2970 | msec = find_debug_info (debug_bfd, msec)) | |
2971 | { | |
2972 | bfd_size_type size = msec->size; | |
2973 | bfd_byte* buffer | |
2974 | = (bfd_simple_get_relocated_section_contents | |
2975 | (debug_bfd, msec, NULL, symbols)); | |
2976 | if (! buffer) | |
2977 | continue; | |
2978 | if (strcmp (msec->name, DWARF2_COMPRESSED_DEBUG_INFO) == 0) | |
2979 | { | |
2980 | if (! bfd_uncompress_section_contents (&buffer, &size)) | |
2981 | continue; | |
2982 | } | |
2983 | stash->info_ptr = bfd_realloc (stash->info_ptr, | |
2984 | stash->info_ptr_end | |
2985 | - stash->info_ptr + size); | |
2986 | memcpy (stash->info_ptr_end, buffer, size); | |
2987 | free (buffer); | |
2988 | stash->info_ptr_end += size; | |
2989 | } | |
2990 | } | |
2991 | } | |
f2363ce5 | 2992 | |
0d161102 | 2993 | stash->sec = find_debug_info (debug_bfd, NULL); |
f2363ce5 AO |
2994 | stash->sec_info_ptr = stash->info_ptr; |
2995 | stash->syms = symbols; | |
0d161102 | 2996 | stash->bfd = debug_bfd; |
252b5132 | 2997 | } |
a092b084 | 2998 | |
98591c73 | 2999 | /* A null info_ptr indicates that there is no dwarf2 info |
a092b084 | 3000 | (or that an error occured while setting up the stash). */ |
252b5132 | 3001 | if (! stash->info_ptr) |
d4c32a81 | 3002 | goto done; |
252b5132 | 3003 | |
4ab527b0 FF |
3004 | stash->inliner_chain = NULL; |
3005 | ||
a092b084 | 3006 | /* Check the previously read comp. units first. */ |
bd210d54 NC |
3007 | if (do_line) |
3008 | { | |
3009 | /* The info hash tables use quite a bit of memory. We may not want to | |
3010 | always use them. We use some heuristics to decide if and when to | |
3011 | turn it on. */ | |
3012 | if (stash->info_hash_status == STASH_INFO_HASH_OFF) | |
3013 | stash_maybe_enable_info_hash_tables (abfd, stash); | |
3014 | ||
3015 | /* Keep info hash table up to date if they are available. Note that we | |
3016 | may disable the hash tables if there is any error duing update. */ | |
3017 | if (stash->info_hash_status == STASH_INFO_HASH_ON) | |
3018 | stash_maybe_update_info_hash_tables (stash); | |
3019 | ||
3020 | if (stash->info_hash_status == STASH_INFO_HASH_ON) | |
3021 | { | |
3022 | found = stash_find_line_fast (stash, symbol, addr, filename_ptr, | |
3023 | linenumber_ptr); | |
3024 | if (found) | |
3025 | goto done; | |
3026 | } | |
0d161102 | 3027 | else |
bd210d54 NC |
3028 | { |
3029 | /* Check the previously read comp. units first. */ | |
3030 | for (each = stash->all_comp_units; each; each = each->next_unit) | |
3031 | if ((symbol->flags & BSF_FUNCTION) == 0 | |
3032 | || comp_unit_contains_address (each, addr)) | |
3033 | { | |
3034 | found = comp_unit_find_line (each, symbol, addr, filename_ptr, | |
3035 | linenumber_ptr, stash); | |
3036 | if (found) | |
3037 | goto done; | |
3038 | } | |
3039 | } | |
3040 | } | |
3041 | else | |
3042 | { | |
709d67f1 AM |
3043 | for (each = stash->all_comp_units; each; each = each->next_unit) |
3044 | { | |
3045 | found = (comp_unit_contains_address (each, addr) | |
3046 | && comp_unit_find_nearest_line (each, addr, | |
3047 | filename_ptr, | |
3048 | functionname_ptr, | |
3049 | linenumber_ptr, | |
3050 | stash)); | |
3051 | if (found) | |
3052 | goto done; | |
3053 | } | |
5420f73d L |
3054 | } |
3055 | ||
5420f73d L |
3056 | /* The DWARF2 spec says that the initial length field, and the |
3057 | offset of the abbreviation table, should both be 4-byte values. | |
3058 | However, some compilers do things differently. */ | |
3059 | if (addr_size == 0) | |
3060 | addr_size = 4; | |
3061 | BFD_ASSERT (addr_size == 4 || addr_size == 8); | |
3062 | ||
3063 | /* Read each remaining comp. units checking each as they are read. */ | |
3064 | while (stash->info_ptr < stash->info_ptr_end) | |
3065 | { | |
3066 | bfd_vma length; | |
3067 | unsigned int offset_size = addr_size; | |
3068 | bfd_byte *info_ptr_unit = stash->info_ptr; | |
3069 | ||
0d161102 | 3070 | length = read_4_bytes (stash->bfd, stash->info_ptr); |
bec42b15 NC |
3071 | /* A 0xffffff length is the DWARF3 way of indicating |
3072 | we use 64-bit offsets, instead of 32-bit offsets. */ | |
5420f73d L |
3073 | if (length == 0xffffffff) |
3074 | { | |
3075 | offset_size = 8; | |
0d161102 | 3076 | length = read_8_bytes (stash->bfd, stash->info_ptr + 4); |
5420f73d L |
3077 | stash->info_ptr += 12; |
3078 | } | |
3079 | /* A zero length is the IRIX way of indicating 64-bit offsets, | |
3080 | mostly because the 64-bit length will generally fit in 32 | |
3081 | bits, and the endianness helps. */ | |
3082 | else if (length == 0) | |
3083 | { | |
3084 | offset_size = 8; | |
0d161102 | 3085 | length = read_4_bytes (stash->bfd, stash->info_ptr + 4); |
5420f73d L |
3086 | stash->info_ptr += 8; |
3087 | } | |
024b2372 CD |
3088 | /* In the absence of the hints above, we assume 32-bit DWARF2 |
3089 | offsets even for targets with 64-bit addresses, because: | |
3090 | a) most of the time these targets will not have generated | |
3091 | more than 2Gb of debug info and so will not need 64-bit | |
3092 | offsets, | |
3093 | and | |
3094 | b) if they do use 64-bit offsets but they are not using | |
3095 | the size hints that are tested for above then they are | |
3096 | not conforming to the DWARF3 standard anyway. */ | |
5420f73d L |
3097 | else if (addr_size == 8) |
3098 | { | |
024b2372 CD |
3099 | offset_size = 4; |
3100 | stash->info_ptr += 4; | |
5420f73d L |
3101 | } |
3102 | else | |
3103 | stash->info_ptr += 4; | |
3104 | ||
3105 | if (length > 0) | |
3106 | { | |
0d161102 | 3107 | each = parse_comp_unit (stash, length, info_ptr_unit, |
5420f73d | 3108 | offset_size); |
d74e4b29 NS |
3109 | if (!each) |
3110 | /* The dwarf information is damaged, don't trust it any | |
3111 | more. */ | |
3112 | break; | |
5420f73d L |
3113 | stash->info_ptr += length; |
3114 | ||
3115 | if ((bfd_vma) (stash->info_ptr - stash->sec_info_ptr) | |
3116 | == stash->sec->size) | |
3117 | { | |
0d161102 | 3118 | stash->sec = find_debug_info (stash->bfd, stash->sec); |
5420f73d L |
3119 | stash->sec_info_ptr = stash->info_ptr; |
3120 | } | |
3121 | ||
d74e4b29 NS |
3122 | if (stash->all_comp_units) |
3123 | stash->all_comp_units->prev_unit = each; | |
3124 | else | |
3125 | stash->last_comp_unit = each; | |
3126 | ||
3127 | each->next_unit = stash->all_comp_units; | |
3128 | stash->all_comp_units = each; | |
3129 | ||
3130 | /* DW_AT_low_pc and DW_AT_high_pc are optional for | |
3131 | compilation units. If we don't have them (i.e., | |
3132 | unit->high == 0), we need to consult the line info table | |
3133 | to see if a compilation unit contains the given | |
3134 | address. */ | |
3135 | if (do_line) | |
3136 | found = (((symbol->flags & BSF_FUNCTION) == 0 | |
3137 | || each->arange.high == 0 | |
3138 | || comp_unit_contains_address (each, addr)) | |
3139 | && comp_unit_find_line (each, symbol, addr, | |
3140 | filename_ptr, | |
3141 | linenumber_ptr, | |
3142 | stash)); | |
3143 | else | |
3144 | found = ((each->arange.high == 0 | |
3145 | || comp_unit_contains_address (each, addr)) | |
3146 | && comp_unit_find_nearest_line (each, addr, | |
3147 | filename_ptr, | |
3148 | functionname_ptr, | |
3149 | linenumber_ptr, | |
3150 | stash)); | |
3151 | if (found) | |
3152 | goto done; | |
5420f73d L |
3153 | } |
3154 | } | |
3155 | ||
d4c32a81 L |
3156 | done: |
3157 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
3158 | unset_sections (stash); | |
3159 | ||
3160 | return found; | |
5420f73d L |
3161 | } |
3162 | ||
bec42b15 NC |
3163 | /* The DWARF2 version of find_nearest_line. |
3164 | Return TRUE if the line is found without error. */ | |
3165 | ||
3166 | bfd_boolean | |
3167 | _bfd_dwarf2_find_nearest_line (bfd *abfd, | |
3168 | asection *section, | |
3169 | asymbol **symbols, | |
3170 | bfd_vma offset, | |
3171 | const char **filename_ptr, | |
3172 | const char **functionname_ptr, | |
3173 | unsigned int *linenumber_ptr, | |
3174 | unsigned int addr_size, | |
3175 | void **pinfo) | |
3176 | { | |
3177 | return find_line (abfd, section, offset, NULL, symbols, filename_ptr, | |
3178 | functionname_ptr, linenumber_ptr, addr_size, | |
3179 | pinfo); | |
3180 | } | |
3181 | ||
3182 | /* The DWARF2 version of find_line. | |
3183 | Return TRUE if the line is found without error. */ | |
3184 | ||
3185 | bfd_boolean | |
3186 | _bfd_dwarf2_find_line (bfd *abfd, | |
3187 | asymbol **symbols, | |
3188 | asymbol *symbol, | |
3189 | const char **filename_ptr, | |
3190 | unsigned int *linenumber_ptr, | |
3191 | unsigned int addr_size, | |
3192 | void **pinfo) | |
3193 | { | |
3194 | return find_line (abfd, NULL, 0, symbol, symbols, filename_ptr, | |
3195 | NULL, linenumber_ptr, addr_size, | |
3196 | pinfo); | |
3197 | } | |
3198 | ||
4ab527b0 FF |
3199 | bfd_boolean |
3200 | _bfd_dwarf2_find_inliner_info (bfd *abfd ATTRIBUTE_UNUSED, | |
3201 | const char **filename_ptr, | |
3202 | const char **functionname_ptr, | |
3203 | unsigned int *linenumber_ptr, | |
3204 | void **pinfo) | |
3205 | { | |
3206 | struct dwarf2_debug *stash; | |
3207 | ||
3208 | stash = *pinfo; | |
3209 | if (stash) | |
3210 | { | |
3211 | struct funcinfo *func = stash->inliner_chain; | |
bec42b15 | 3212 | |
4ab527b0 FF |
3213 | if (func && func->caller_func) |
3214 | { | |
3215 | *filename_ptr = func->caller_file; | |
3216 | *functionname_ptr = func->caller_func->name; | |
3217 | *linenumber_ptr = func->caller_line; | |
3218 | stash->inliner_chain = func->caller_func; | |
bec42b15 | 3219 | return TRUE; |
4ab527b0 FF |
3220 | } |
3221 | } | |
3222 | ||
bec42b15 | 3223 | return FALSE; |
4ab527b0 FF |
3224 | } |
3225 | ||
35330cce NC |
3226 | void |
3227 | _bfd_dwarf2_cleanup_debug_info (bfd *abfd) | |
3228 | { | |
3229 | struct comp_unit *each; | |
3230 | struct dwarf2_debug *stash; | |
3231 | ||
3232 | if (abfd == NULL || elf_tdata (abfd) == NULL) | |
3233 | return; | |
3234 | ||
3235 | stash = elf_tdata (abfd)->dwarf2_find_line_info; | |
3236 | ||
3237 | if (stash == NULL) | |
3238 | return; | |
3239 | ||
3240 | for (each = stash->all_comp_units; each; each = each->next_unit) | |
3241 | { | |
34b5e0b2 | 3242 | struct abbrev_info **abbrevs = each->abbrevs; |
90b5b1a5 NC |
3243 | struct funcinfo *function_table = each->function_table; |
3244 | struct varinfo *variable_table = each->variable_table; | |
34b5e0b2 | 3245 | size_t i; |
35330cce | 3246 | |
34b5e0b2 | 3247 | for (i = 0; i < ABBREV_HASH_SIZE; i++) |
d8d1c398 | 3248 | { |
34b5e0b2 | 3249 | struct abbrev_info *abbrev = abbrevs[i]; |
35330cce | 3250 | |
34b5e0b2 | 3251 | while (abbrev) |
d8d1c398 | 3252 | { |
34b5e0b2 NC |
3253 | free (abbrev->attrs); |
3254 | abbrev = abbrev->next; | |
d8d1c398 AM |
3255 | } |
3256 | } | |
35330cce NC |
3257 | |
3258 | if (each->line_table) | |
d8d1c398 | 3259 | { |
34b5e0b2 NC |
3260 | free (each->line_table->dirs); |
3261 | free (each->line_table->files); | |
d8d1c398 | 3262 | } |
90b5b1a5 NC |
3263 | |
3264 | while (function_table) | |
3265 | { | |
3266 | if (function_table->file) | |
3267 | { | |
3268 | free (function_table->file); | |
3269 | function_table->file = NULL; | |
3270 | } | |
3271 | ||
3272 | if (function_table->caller_file) | |
3273 | { | |
3274 | free (function_table->caller_file); | |
3275 | function_table->caller_file = NULL; | |
3276 | } | |
3277 | function_table = function_table->prev_func; | |
3278 | } | |
3279 | ||
3280 | while (variable_table) | |
3281 | { | |
3282 | if (variable_table->file) | |
3283 | { | |
3284 | free (variable_table->file); | |
3285 | variable_table->file = NULL; | |
3286 | } | |
3287 | ||
3288 | variable_table = variable_table->prev_var; | |
3289 | } | |
35330cce NC |
3290 | } |
3291 | ||
3292 | free (stash->dwarf_abbrev_buffer); | |
3293 | free (stash->dwarf_line_buffer); | |
3294 | free (stash->dwarf_ranges_buffer); | |
1b315056 | 3295 | free (stash->sec_info_ptr); |
35330cce | 3296 | } |