Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* DWARF 2 support. |
82704155 | 2 | Copyright (C) 1994-2019 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | Adapted from gdb/dwarf2read.c by Gavin Koch of Cygnus Solutions | |
5 | (gavin@cygnus.com). | |
6 | ||
7 | From the dwarf2read.c header: | |
8 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
9 | Inc. with support from Florida State University (under contract | |
10 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
11 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
12 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
13 | support in dwarfread.c | |
14 | ||
e2f6d277 | 15 | This file is part of BFD. |
252b5132 | 16 | |
e2f6d277 NC |
17 | This program is free software; you can redistribute it and/or modify |
18 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 19 | the Free Software Foundation; either version 3 of the License, or (at |
e2f6d277 | 20 | your option) any later version. |
252b5132 | 21 | |
e2f6d277 NC |
22 | This program is distributed in the hope that it will be useful, but |
23 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
25 | General Public License for more details. | |
252b5132 | 26 | |
e2f6d277 NC |
27 | You should have received a copy of the GNU General Public License |
28 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
29 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
30 | MA 02110-1301, USA. */ | |
252b5132 | 31 | |
252b5132 | 32 | #include "sysdep.h" |
3db64b00 | 33 | #include "bfd.h" |
252b5132 RH |
34 | #include "libiberty.h" |
35 | #include "libbfd.h" | |
36 | #include "elf-bfd.h" | |
fa8f86ff | 37 | #include "dwarf2.h" |
3eb185c9 | 38 | #include "hashtab.h" |
252b5132 RH |
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 | 47 | unsigned char minimum_instruction_length; |
a233b20c | 48 | unsigned char maximum_ops_per_insn; |
a092b084 NC |
49 | unsigned char default_is_stmt; |
50 | int line_base; | |
51 | unsigned char line_range; | |
52 | unsigned char opcode_base; | |
53 | unsigned char *standard_opcode_lengths; | |
54 | }; | |
55 | ||
56 | /* Attributes have a name and a value. */ | |
57 | ||
252b5132 | 58 | struct attribute |
a092b084 NC |
59 | { |
60 | enum dwarf_attribute name; | |
61 | enum dwarf_form form; | |
62 | union | |
252b5132 | 63 | { |
a092b084 NC |
64 | char *str; |
65 | struct dwarf_block *blk; | |
8ce8c090 AM |
66 | bfd_uint64_t val; |
67 | bfd_int64_t sval; | |
a092b084 NC |
68 | } |
69 | u; | |
70 | }; | |
71 | ||
98591c73 | 72 | /* Blocks are a bunch of untyped bytes. */ |
252b5132 | 73 | struct dwarf_block |
a092b084 NC |
74 | { |
75 | unsigned int size; | |
f075ee0c | 76 | bfd_byte *data; |
a092b084 | 77 | }; |
252b5132 | 78 | |
5609a71e | 79 | struct adjusted_section |
d4c32a81 L |
80 | { |
81 | asection *section; | |
82 | bfd_vma adj_vma; | |
83 | }; | |
84 | ||
a092b084 NC |
85 | struct dwarf2_debug |
86 | { | |
87 | /* A list of all previously read comp_units. */ | |
f075ee0c | 88 | struct comp_unit *all_comp_units; |
252b5132 | 89 | |
bd210d54 NC |
90 | /* Last comp unit in list above. */ |
91 | struct comp_unit *last_comp_unit; | |
92 | ||
fc28f9aa TG |
93 | /* Names of the debug sections. */ |
94 | const struct dwarf_debug_section *debug_sections; | |
95 | ||
252b5132 RH |
96 | /* The next unread compilation unit within the .debug_info section. |
97 | Zero indicates that the .debug_info section has not been loaded | |
a092b084 | 98 | into a buffer yet. */ |
f075ee0c | 99 | bfd_byte *info_ptr; |
252b5132 | 100 | |
a092b084 | 101 | /* Pointer to the end of the .debug_info section memory buffer. */ |
f075ee0c | 102 | bfd_byte *info_ptr_end; |
252b5132 | 103 | |
90ed9b8b AB |
104 | /* Pointer to the original bfd for which debug was loaded. This is what |
105 | we use to compare and so check that the cached debug data is still | |
106 | valid - it saves having to possibly dereference the gnu_debuglink each | |
107 | time. */ | |
108 | bfd *orig_bfd; | |
109 | ||
0d161102 NC |
110 | /* Pointer to the bfd, section and address of the beginning of the |
111 | section. The bfd might be different than expected because of | |
112 | gnu_debuglink sections. */ | |
a50b1753 | 113 | bfd *bfd_ptr; |
f075ee0c AM |
114 | asection *sec; |
115 | bfd_byte *sec_info_ptr; | |
f2363ce5 | 116 | |
95e34fb4 NC |
117 | /* Support for alternate debug info sections created by the DWZ utility: |
118 | This includes a pointer to an alternate bfd which contains *extra*, | |
119 | possibly duplicate debug sections, and pointers to the loaded | |
120 | .debug_str and .debug_info sections from this bfd. */ | |
07d6d2b8 AM |
121 | bfd * alt_bfd_ptr; |
122 | bfd_byte * alt_dwarf_str_buffer; | |
123 | bfd_size_type alt_dwarf_str_size; | |
124 | bfd_byte * alt_dwarf_info_buffer; | |
125 | bfd_size_type alt_dwarf_info_size; | |
95e34fb4 | 126 | |
aaf30c25 CS |
127 | /* A pointer to the memory block allocated for info_ptr. Neither |
128 | info_ptr nor sec_info_ptr are guaranteed to stay pointing to the | |
1b86808a | 129 | beginning of the malloc block. */ |
aaf30c25 CS |
130 | bfd_byte *info_ptr_memory; |
131 | ||
f2363ce5 | 132 | /* Pointer to the symbol table. */ |
f075ee0c | 133 | asymbol **syms; |
f2363ce5 | 134 | |
a092b084 | 135 | /* Pointer to the .debug_abbrev section loaded into memory. */ |
f075ee0c | 136 | bfd_byte *dwarf_abbrev_buffer; |
252b5132 | 137 | |
a092b084 | 138 | /* Length of the loaded .debug_abbrev section. */ |
3076cd1f | 139 | bfd_size_type dwarf_abbrev_size; |
69dd2e2d RH |
140 | |
141 | /* Buffer for decode_line_info. */ | |
f075ee0c | 142 | bfd_byte *dwarf_line_buffer; |
ccdb16fc JW |
143 | |
144 | /* Length of the loaded .debug_line section. */ | |
3076cd1f | 145 | bfd_size_type dwarf_line_size; |
d03ba2a1 JJ |
146 | |
147 | /* Pointer to the .debug_str section loaded into memory. */ | |
f075ee0c | 148 | bfd_byte *dwarf_str_buffer; |
d03ba2a1 JJ |
149 | |
150 | /* Length of the loaded .debug_str section. */ | |
3076cd1f | 151 | bfd_size_type dwarf_str_size; |
a13afe8e | 152 | |
0041f7df JK |
153 | /* Pointer to the .debug_line_str section loaded into memory. */ |
154 | bfd_byte *dwarf_line_str_buffer; | |
155 | ||
156 | /* Length of the loaded .debug_line_str section. */ | |
157 | bfd_size_type dwarf_line_str_size; | |
158 | ||
089e3718 | 159 | /* Pointer to the .debug_ranges section loaded into memory. */ |
a13afe8e FF |
160 | bfd_byte *dwarf_ranges_buffer; |
161 | ||
089e3718 | 162 | /* Length of the loaded .debug_ranges section. */ |
3076cd1f | 163 | bfd_size_type dwarf_ranges_size; |
4ab527b0 FF |
164 | |
165 | /* If the most recent call to bfd_find_nearest_line was given an | |
166 | address in an inlined function, preserve a pointer into the | |
167 | calling chain for subsequent calls to bfd_find_inliner_info to | |
089e3718 | 168 | use. */ |
4ab527b0 | 169 | struct funcinfo *inliner_chain; |
d4c32a81 | 170 | |
cd0449ab AM |
171 | /* Section VMAs at the time the stash was built. */ |
172 | bfd_vma *sec_vma; | |
d7f848c3 NC |
173 | /* Number of sections in the SEC_VMA table. */ |
174 | unsigned int sec_vma_count; | |
cd0449ab | 175 | |
5609a71e | 176 | /* Number of sections whose VMA we must adjust. */ |
93ee1e36 | 177 | int adjusted_section_count; |
d4c32a81 | 178 | |
5609a71e DJ |
179 | /* Array of sections with adjusted VMA. */ |
180 | struct adjusted_section *adjusted_sections; | |
bd210d54 NC |
181 | |
182 | /* Number of times find_line is called. This is used in | |
183 | the heuristic for enabling the info hash tables. */ | |
184 | int info_hash_count; | |
185 | ||
186 | #define STASH_INFO_HASH_TRIGGER 100 | |
187 | ||
188 | /* Hash table mapping symbol names to function infos. */ | |
189 | struct info_hash_table *funcinfo_hash_table; | |
190 | ||
191 | /* Hash table mapping symbol names to variable infos. */ | |
192 | struct info_hash_table *varinfo_hash_table; | |
193 | ||
194 | /* Head of comp_unit list in the last hash table update. */ | |
195 | struct comp_unit *hash_units_head; | |
196 | ||
197 | /* Status of info hash. */ | |
198 | int info_hash_status; | |
07d6d2b8 AM |
199 | #define STASH_INFO_HASH_OFF 0 |
200 | #define STASH_INFO_HASH_ON 1 | |
bd210d54 | 201 | #define STASH_INFO_HASH_DISABLED 2 |
1c37913d AM |
202 | |
203 | /* True if we opened bfd_ptr. */ | |
204 | bfd_boolean close_on_cleanup; | |
252b5132 RH |
205 | }; |
206 | ||
a092b084 NC |
207 | struct arange |
208 | { | |
f623be2b RH |
209 | struct arange *next; |
210 | bfd_vma low; | |
211 | bfd_vma high; | |
212 | }; | |
252b5132 | 213 | |
252b5132 | 214 | /* A minimal decoding of DWARF2 compilation units. We only decode |
a092b084 | 215 | what's needed to get to the line number information. */ |
252b5132 | 216 | |
a092b084 NC |
217 | struct comp_unit |
218 | { | |
219 | /* Chain the previously read compilation units. */ | |
f075ee0c | 220 | struct comp_unit *next_unit; |
252b5132 | 221 | |
bd210d54 NC |
222 | /* Likewise, chain the compilation unit read after this one. |
223 | The comp units are stored in reversed reading order. */ | |
224 | struct comp_unit *prev_unit; | |
225 | ||
2ae727ad | 226 | /* Keep the bfd convenient (for memory allocation). */ |
f075ee0c | 227 | bfd *abfd; |
252b5132 | 228 | |
709d67f1 AM |
229 | /* The lowest and highest addresses contained in this compilation |
230 | unit as specified in the compilation unit header. */ | |
231 | struct arange arange; | |
252b5132 | 232 | |
a092b084 | 233 | /* The DW_AT_name attribute (for error messages). */ |
f075ee0c | 234 | char *name; |
252b5132 | 235 | |
a092b084 | 236 | /* The abbrev hash table. */ |
f075ee0c | 237 | struct abbrev_info **abbrevs; |
252b5132 | 238 | |
e00e8198 AM |
239 | /* DW_AT_language. */ |
240 | int lang; | |
241 | ||
a092b084 | 242 | /* Note that an error was found by comp_unit_find_nearest_line. */ |
252b5132 RH |
243 | int error; |
244 | ||
a092b084 | 245 | /* The DW_AT_comp_dir attribute. */ |
f075ee0c | 246 | char *comp_dir; |
252b5132 | 247 | |
b34976b6 | 248 | /* TRUE if there is a line number table associated with this comp. unit. */ |
252b5132 | 249 | int stmtlist; |
98591c73 | 250 | |
c0c28ab8 L |
251 | /* Pointer to the current comp_unit so that we can find a given entry |
252 | by its reference. */ | |
f075ee0c | 253 | bfd_byte *info_ptr_unit; |
c0c28ab8 | 254 | |
a092b084 | 255 | /* The offset into .debug_line of the line number table. */ |
252b5132 RH |
256 | unsigned long line_offset; |
257 | ||
a092b084 | 258 | /* Pointer to the first child die for the comp unit. */ |
f075ee0c | 259 | bfd_byte *first_child_die_ptr; |
252b5132 | 260 | |
a092b084 | 261 | /* The end of the comp unit. */ |
f075ee0c | 262 | bfd_byte *end_ptr; |
252b5132 | 263 | |
a092b084 | 264 | /* The decoded line number, NULL if not yet decoded. */ |
f075ee0c | 265 | struct line_info_table *line_table; |
252b5132 | 266 | |
a092b084 | 267 | /* A list of the functions found in this comp. unit. */ |
f075ee0c | 268 | struct funcinfo *function_table; |
252b5132 | 269 | |
089e3718 IT |
270 | /* A table of function information references searchable by address. */ |
271 | struct lookup_funcinfo *lookup_funcinfo_table; | |
272 | ||
273 | /* Number of functions in the function_table and sorted_function_table. */ | |
274 | bfd_size_type number_of_functions; | |
275 | ||
5420f73d L |
276 | /* A list of the variables found in this comp. unit. */ |
277 | struct varinfo *variable_table; | |
278 | ||
d03ba2a1 JJ |
279 | /* Pointer to dwarf2_debug structure. */ |
280 | struct dwarf2_debug *stash; | |
281 | ||
5609a71e DJ |
282 | /* DWARF format version for this unit - from unit header. */ |
283 | int version; | |
284 | ||
a092b084 | 285 | /* Address size for this unit - from unit header. */ |
252b5132 | 286 | unsigned char addr_size; |
d03ba2a1 JJ |
287 | |
288 | /* Offset size for this unit - from unit header. */ | |
289 | unsigned char offset_size; | |
a13afe8e FF |
290 | |
291 | /* Base address for this unit - from DW_AT_low_pc attribute of | |
292 | DW_TAG_compile_unit DIE */ | |
293 | bfd_vma base_address; | |
bd210d54 NC |
294 | |
295 | /* TRUE if symbols are cached in hash table for faster lookup by name. */ | |
296 | bfd_boolean cached; | |
252b5132 RH |
297 | }; |
298 | ||
a7b97311 AM |
299 | /* This data structure holds the information of an abbrev. */ |
300 | struct abbrev_info | |
301 | { | |
302 | unsigned int number; /* Number identifying abbrev. */ | |
303 | enum dwarf_tag tag; /* DWARF tag. */ | |
304 | int has_children; /* Boolean. */ | |
305 | unsigned int num_attrs; /* Number of attributes. */ | |
306 | struct attr_abbrev *attrs; /* An array of attribute descriptions. */ | |
307 | struct abbrev_info *next; /* Next in chain. */ | |
308 | }; | |
309 | ||
310 | struct attr_abbrev | |
311 | { | |
312 | enum dwarf_attribute name; | |
313 | enum dwarf_form form; | |
0041f7df | 314 | bfd_vma implicit_const; |
a7b97311 AM |
315 | }; |
316 | ||
4a114e3e L |
317 | /* Map of uncompressed DWARF debug section name to compressed one. It |
318 | is terminated by NULL uncompressed_name. */ | |
319 | ||
e4c93b56 | 320 | const struct dwarf_debug_section dwarf_debug_sections[] = |
4a114e3e L |
321 | { |
322 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
323 | { ".debug_aranges", ".zdebug_aranges" }, | |
324 | { ".debug_frame", ".zdebug_frame" }, | |
325 | { ".debug_info", ".zdebug_info" }, | |
95e34fb4 | 326 | { ".debug_info", ".zdebug_info" }, |
4a114e3e L |
327 | { ".debug_line", ".zdebug_line" }, |
328 | { ".debug_loc", ".zdebug_loc" }, | |
329 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
4ccf1e31 | 330 | { ".debug_macro", ".zdebug_macro" }, |
4a114e3e L |
331 | { ".debug_pubnames", ".zdebug_pubnames" }, |
332 | { ".debug_pubtypes", ".zdebug_pubtypes" }, | |
333 | { ".debug_ranges", ".zdebug_ranges" }, | |
334 | { ".debug_static_func", ".zdebug_static_func" }, | |
335 | { ".debug_static_vars", ".zdebug_static_vars" }, | |
336 | { ".debug_str", ".zdebug_str", }, | |
95e34fb4 | 337 | { ".debug_str", ".zdebug_str", }, |
0041f7df | 338 | { ".debug_line_str", ".zdebug_line_str", }, |
4a114e3e L |
339 | { ".debug_types", ".zdebug_types" }, |
340 | /* GNU DWARF 1 extensions */ | |
341 | { ".debug_sfnames", ".zdebug_sfnames" }, | |
342 | { ".debug_srcinfo", ".zebug_srcinfo" }, | |
343 | /* SGI/MIPS DWARF 2 extensions */ | |
344 | { ".debug_funcnames", ".zdebug_funcnames" }, | |
345 | { ".debug_typenames", ".zdebug_typenames" }, | |
346 | { ".debug_varnames", ".zdebug_varnames" }, | |
347 | { ".debug_weaknames", ".zdebug_weaknames" }, | |
348 | { NULL, NULL }, | |
349 | }; | |
350 | ||
67ce483b | 351 | /* NB/ Numbers in this enum must match up with indices |
95e34fb4 | 352 | into the dwarf_debug_sections[] array above. */ |
4a114e3e L |
353 | enum dwarf_debug_section_enum |
354 | { | |
355 | debug_abbrev = 0, | |
356 | debug_aranges, | |
357 | debug_frame, | |
358 | debug_info, | |
95e34fb4 | 359 | debug_info_alt, |
4a114e3e L |
360 | debug_line, |
361 | debug_loc, | |
362 | debug_macinfo, | |
4ccf1e31 | 363 | debug_macro, |
4a114e3e L |
364 | debug_pubnames, |
365 | debug_pubtypes, | |
366 | debug_ranges, | |
367 | debug_static_func, | |
368 | debug_static_vars, | |
369 | debug_str, | |
95e34fb4 | 370 | debug_str_alt, |
0041f7df | 371 | debug_line_str, |
4a114e3e L |
372 | debug_types, |
373 | debug_sfnames, | |
374 | debug_srcinfo, | |
375 | debug_funcnames, | |
376 | debug_typenames, | |
377 | debug_varnames, | |
0041f7df JK |
378 | debug_weaknames, |
379 | debug_max | |
4a114e3e L |
380 | }; |
381 | ||
0041f7df JK |
382 | /* A static assertion. */ |
383 | extern int dwarf_debug_section_assert[ARRAY_SIZE (dwarf_debug_sections) | |
384 | == debug_max + 1 ? 1 : -1]; | |
385 | ||
a7b97311 AM |
386 | #ifndef ABBREV_HASH_SIZE |
387 | #define ABBREV_HASH_SIZE 121 | |
388 | #endif | |
389 | #ifndef ATTR_ALLOC_CHUNK | |
390 | #define ATTR_ALLOC_CHUNK 4 | |
391 | #endif | |
392 | ||
bd210d54 NC |
393 | /* Variable and function hash tables. This is used to speed up look-up |
394 | in lookup_symbol_in_var_table() and lookup_symbol_in_function_table(). | |
395 | In order to share code between variable and function infos, we use | |
396 | a list of untyped pointer for all variable/function info associated with | |
397 | a symbol. We waste a bit of memory for list with one node but that | |
398 | simplifies the code. */ | |
399 | ||
400 | struct info_list_node | |
401 | { | |
402 | struct info_list_node *next; | |
403 | void *info; | |
404 | }; | |
405 | ||
406 | /* Info hash entry. */ | |
407 | struct info_hash_entry | |
408 | { | |
409 | struct bfd_hash_entry root; | |
410 | struct info_list_node *head; | |
411 | }; | |
412 | ||
413 | struct info_hash_table | |
414 | { | |
415 | struct bfd_hash_table base; | |
416 | }; | |
417 | ||
089e3718 | 418 | /* Function to create a new entry in info hash table. */ |
bd210d54 NC |
419 | |
420 | static struct bfd_hash_entry * | |
421 | info_hash_table_newfunc (struct bfd_hash_entry *entry, | |
422 | struct bfd_hash_table *table, | |
423 | const char *string) | |
424 | { | |
425 | struct info_hash_entry *ret = (struct info_hash_entry *) entry; | |
426 | ||
427 | /* Allocate the structure if it has not already been allocated by a | |
428 | derived class. */ | |
429 | if (ret == NULL) | |
430 | { | |
a50b1753 | 431 | ret = (struct info_hash_entry *) bfd_hash_allocate (table, |
93ee1e36 | 432 | sizeof (* ret)); |
bd210d54 NC |
433 | if (ret == NULL) |
434 | return NULL; | |
435 | } | |
436 | ||
437 | /* Call the allocation method of the base class. */ | |
438 | ret = ((struct info_hash_entry *) | |
2d47a72c | 439 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); |
bd210d54 NC |
440 | |
441 | /* Initialize the local fields here. */ | |
442 | if (ret) | |
443 | ret->head = NULL; | |
444 | ||
445 | return (struct bfd_hash_entry *) ret; | |
446 | } | |
447 | ||
448 | /* Function to create a new info hash table. It returns a pointer to the | |
449 | newly created table or NULL if there is any error. We need abfd | |
450 | solely for memory allocation. */ | |
451 | ||
452 | static struct info_hash_table * | |
453 | create_info_hash_table (bfd *abfd) | |
454 | { | |
455 | struct info_hash_table *hash_table; | |
456 | ||
a2a50954 AM |
457 | hash_table = ((struct info_hash_table *) |
458 | bfd_alloc (abfd, sizeof (struct info_hash_table))); | |
bd210d54 NC |
459 | if (!hash_table) |
460 | return hash_table; | |
461 | ||
462 | if (!bfd_hash_table_init (&hash_table->base, info_hash_table_newfunc, | |
463 | sizeof (struct info_hash_entry))) | |
464 | { | |
465 | bfd_release (abfd, hash_table); | |
466 | return NULL; | |
467 | } | |
468 | ||
469 | return hash_table; | |
470 | } | |
471 | ||
472 | /* Insert an info entry into an info hash table. We do not check of | |
473 | duplicate entries. Also, the caller need to guarantee that the | |
474 | right type of info in inserted as info is passed as a void* pointer. | |
475 | This function returns true if there is no error. */ | |
476 | ||
477 | static bfd_boolean | |
478 | insert_info_hash_table (struct info_hash_table *hash_table, | |
479 | const char *key, | |
480 | void *info, | |
481 | bfd_boolean copy_p) | |
482 | { | |
483 | struct info_hash_entry *entry; | |
484 | struct info_list_node *node; | |
485 | ||
486 | entry = (struct info_hash_entry*) bfd_hash_lookup (&hash_table->base, | |
487 | key, TRUE, copy_p); | |
488 | if (!entry) | |
489 | return FALSE; | |
490 | ||
a50b1753 | 491 | node = (struct info_list_node *) bfd_hash_allocate (&hash_table->base, |
93ee1e36 | 492 | sizeof (*node)); |
bd210d54 NC |
493 | if (!node) |
494 | return FALSE; | |
495 | ||
496 | node->info = info; | |
497 | node->next = entry->head; | |
498 | entry->head = node; | |
499 | ||
500 | return TRUE; | |
501 | } | |
502 | ||
503 | /* Look up an info entry list from an info hash table. Return NULL | |
089e3718 | 504 | if there is none. */ |
bd210d54 NC |
505 | |
506 | static struct info_list_node * | |
507 | lookup_info_hash_table (struct info_hash_table *hash_table, const char *key) | |
508 | { | |
509 | struct info_hash_entry *entry; | |
510 | ||
511 | entry = (struct info_hash_entry*) bfd_hash_lookup (&hash_table->base, key, | |
512 | FALSE, FALSE); | |
513 | return entry ? entry->head : NULL; | |
514 | } | |
515 | ||
1b315056 | 516 | /* Read a section into its appropriate place in the dwarf2_debug |
dc80fd5c | 517 | struct (indicated by SECTION_BUFFER and SECTION_SIZE). If SYMS is |
1b315056 | 518 | not NULL, use bfd_simple_get_relocated_section_contents to read the |
dc80fd5c NC |
519 | section contents, otherwise use bfd_get_section_contents. Fail if |
520 | the located section does not contain at least OFFSET bytes. */ | |
1b315056 CS |
521 | |
522 | static bfd_boolean | |
07d6d2b8 | 523 | read_section (bfd * abfd, |
fc28f9aa | 524 | const struct dwarf_debug_section *sec, |
dc80fd5c NC |
525 | asymbol ** syms, |
526 | bfd_uint64_t offset, | |
527 | bfd_byte ** section_buffer, | |
528 | bfd_size_type * section_size) | |
1b315056 CS |
529 | { |
530 | asection *msec; | |
fc28f9aa | 531 | const char *section_name = sec->uncompressed_name; |
4b04bba2 | 532 | bfd_byte *contents = *section_buffer; |
30838132 | 533 | bfd_size_type amt; |
1b315056 | 534 | |
95e34fb4 | 535 | /* The section may have already been read. */ |
4b04bba2 | 536 | if (contents == NULL) |
1b315056 | 537 | { |
53638231 | 538 | msec = bfd_get_section_by_name (abfd, section_name); |
4a114e3e | 539 | if (! msec) |
53638231 | 540 | { |
fc28f9aa | 541 | section_name = sec->compressed_name; |
93ee1e36 AM |
542 | if (section_name != NULL) |
543 | msec = bfd_get_section_by_name (abfd, section_name); | |
53638231 AS |
544 | } |
545 | if (! msec) | |
2d47a72c | 546 | { |
9793eb77 | 547 | _bfd_error_handler (_("DWARF error: can't find %s section."), |
4eca0228 | 548 | sec->uncompressed_name); |
2d47a72c DJ |
549 | bfd_set_error (bfd_error_bad_value); |
550 | return FALSE; | |
551 | } | |
53638231 | 552 | |
bc664799 | 553 | *section_size = msec->rawsize ? msec->rawsize : msec->size; |
4b04bba2 AM |
554 | /* Paranoia - alloc one extra so that we can make sure a string |
555 | section is NUL terminated. */ | |
30838132 AM |
556 | amt = *section_size + 1; |
557 | if (amt == 0) | |
558 | { | |
559 | bfd_set_error (bfd_error_no_memory); | |
560 | return FALSE; | |
561 | } | |
562 | contents = (bfd_byte *) bfd_malloc (amt); | |
4b04bba2 AM |
563 | if (contents == NULL) |
564 | return FALSE; | |
565 | if (syms | |
566 | ? !bfd_simple_get_relocated_section_contents (abfd, msec, contents, | |
567 | syms) | |
568 | : !bfd_get_section_contents (abfd, msec, contents, 0, *section_size)) | |
8c2ccebd | 569 | { |
4b04bba2 AM |
570 | free (contents); |
571 | return FALSE; | |
e4f27230 | 572 | } |
4b04bba2 AM |
573 | contents[*section_size] = 0; |
574 | *section_buffer = contents; | |
1b315056 CS |
575 | } |
576 | ||
577 | /* It is possible to get a bad value for the offset into the section | |
dc80fd5c | 578 | that the client wants. Validate it here to avoid trouble later. */ |
1b315056 CS |
579 | if (offset != 0 && offset >= *section_size) |
580 | { | |
695344c0 | 581 | /* xgettext: c-format */ |
9793eb77 AM |
582 | _bfd_error_handler (_("DWARF error: offset (%" PRIu64 ")" |
583 | " greater than or equal to %s size (%" PRIu64 ")"), | |
8979927a | 584 | (uint64_t) offset, section_name, |
2dcf00ce | 585 | (uint64_t) *section_size); |
1b315056 CS |
586 | bfd_set_error (bfd_error_bad_value); |
587 | return FALSE; | |
588 | } | |
589 | ||
590 | return TRUE; | |
591 | } | |
592 | ||
a092b084 | 593 | /* Read dwarf information from a buffer. */ |
252b5132 RH |
594 | |
595 | static unsigned int | |
dbb3fbbb | 596 | read_1_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf, bfd_byte *end) |
252b5132 | 597 | { |
dbb3fbbb NC |
598 | if (buf + 1 > end) |
599 | return 0; | |
818a27ac | 600 | return bfd_get_8 (abfd, buf); |
252b5132 RH |
601 | } |
602 | ||
603 | static int | |
dbb3fbbb | 604 | read_1_signed_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf, bfd_byte *end) |
252b5132 | 605 | { |
dbb3fbbb NC |
606 | if (buf + 1 > end) |
607 | return 0; | |
818a27ac | 608 | return bfd_get_signed_8 (abfd, buf); |
252b5132 RH |
609 | } |
610 | ||
611 | static unsigned int | |
dbb3fbbb | 612 | read_2_bytes (bfd *abfd, bfd_byte *buf, bfd_byte *end) |
252b5132 | 613 | { |
dbb3fbbb NC |
614 | if (buf + 2 > end) |
615 | return 0; | |
818a27ac | 616 | return bfd_get_16 (abfd, buf); |
252b5132 RH |
617 | } |
618 | ||
252b5132 | 619 | static unsigned int |
dbb3fbbb | 620 | read_4_bytes (bfd *abfd, bfd_byte *buf, bfd_byte *end) |
252b5132 | 621 | { |
dbb3fbbb NC |
622 | if (buf + 4 > end) |
623 | return 0; | |
818a27ac | 624 | return bfd_get_32 (abfd, buf); |
252b5132 RH |
625 | } |
626 | ||
8ce8c090 | 627 | static bfd_uint64_t |
dbb3fbbb | 628 | read_8_bytes (bfd *abfd, bfd_byte *buf, bfd_byte *end) |
252b5132 | 629 | { |
dbb3fbbb NC |
630 | if (buf + 8 > end) |
631 | return 0; | |
818a27ac | 632 | return bfd_get_64 (abfd, buf); |
252b5132 RH |
633 | } |
634 | ||
f075ee0c | 635 | static bfd_byte * |
12c96342 NC |
636 | read_n_bytes (bfd_byte * buf, |
637 | bfd_byte * end, | |
638 | struct dwarf_block * block) | |
252b5132 | 639 | { |
12c96342 NC |
640 | unsigned int size = block->size; |
641 | bfd_byte * block_end = buf + size; | |
642 | ||
643 | if (block_end > end || block_end < buf) | |
644 | { | |
645 | block->data = NULL; | |
646 | block->size = 0; | |
647 | return end; | |
648 | } | |
649 | else | |
650 | { | |
651 | block->data = buf; | |
652 | return block_end; | |
653 | } | |
252b5132 RH |
654 | } |
655 | ||
dbb3fbbb NC |
656 | /* Scans a NUL terminated string starting at BUF, returning a pointer to it. |
657 | Returns the number of characters in the string, *including* the NUL byte, | |
658 | in BYTES_READ_PTR. This value is set even if the function fails. Bytes | |
659 | at or beyond BUF_END will not be read. Returns NULL if there was a | |
660 | problem, or if the string is empty. */ | |
661 | ||
252b5132 | 662 | static char * |
07d6d2b8 AM |
663 | read_string (bfd * abfd ATTRIBUTE_UNUSED, |
664 | bfd_byte * buf, | |
665 | bfd_byte * buf_end, | |
dbb3fbbb | 666 | unsigned int * bytes_read_ptr) |
252b5132 | 667 | { |
dbb3fbbb NC |
668 | bfd_byte *str = buf; |
669 | ||
670 | if (buf >= buf_end) | |
671 | { | |
672 | * bytes_read_ptr = 0; | |
673 | return NULL; | |
674 | } | |
dc80fd5c | 675 | |
f075ee0c | 676 | if (*str == '\0') |
252b5132 | 677 | { |
dbb3fbbb | 678 | * bytes_read_ptr = 1; |
252b5132 RH |
679 | return NULL; |
680 | } | |
98591c73 | 681 | |
dbb3fbbb NC |
682 | while (buf < buf_end) |
683 | if (* buf ++ == 0) | |
684 | { | |
685 | * bytes_read_ptr = buf - str; | |
686 | return (char *) str; | |
687 | } | |
688 | ||
689 | * bytes_read_ptr = buf - str; | |
690 | return NULL; | |
252b5132 RH |
691 | } |
692 | ||
dbb3fbbb NC |
693 | /* Reads an offset from BUF and then locates the string at this offset |
694 | inside the debug string section. Returns a pointer to the string. | |
695 | Returns the number of bytes read from BUF, *not* the length of the string, | |
696 | in BYTES_READ_PTR. This value is set even if the function fails. Bytes | |
697 | at or beyond BUF_END will not be read from BUF. Returns NULL if there was | |
698 | a problem, or if the string is empty. Does not check for NUL termination | |
699 | of the string. */ | |
dc80fd5c | 700 | |
d03ba2a1 | 701 | static char * |
dc80fd5c | 702 | read_indirect_string (struct comp_unit * unit, |
07d6d2b8 AM |
703 | bfd_byte * buf, |
704 | bfd_byte * buf_end, | |
705 | unsigned int * bytes_read_ptr) | |
d03ba2a1 | 706 | { |
8ce8c090 | 707 | bfd_uint64_t offset; |
d03ba2a1 | 708 | struct dwarf2_debug *stash = unit->stash; |
f075ee0c | 709 | char *str; |
d03ba2a1 | 710 | |
dbb3fbbb NC |
711 | if (buf + unit->offset_size > buf_end) |
712 | { | |
713 | * bytes_read_ptr = 0; | |
714 | return NULL; | |
715 | } | |
62f8d217 | 716 | |
d03ba2a1 | 717 | if (unit->offset_size == 4) |
dbb3fbbb | 718 | offset = read_4_bytes (unit->abfd, buf, buf_end); |
d03ba2a1 | 719 | else |
dbb3fbbb | 720 | offset = read_8_bytes (unit->abfd, buf, buf_end); |
dc80fd5c | 721 | |
d03ba2a1 JJ |
722 | *bytes_read_ptr = unit->offset_size; |
723 | ||
fc28f9aa | 724 | if (! read_section (unit->abfd, &stash->debug_sections[debug_str], |
93ee1e36 | 725 | stash->syms, offset, |
9e32b19f | 726 | &stash->dwarf_str_buffer, &stash->dwarf_str_size)) |
dc80fd5c | 727 | return NULL; |
d03ba2a1 | 728 | |
dbb3fbbb NC |
729 | if (offset >= stash->dwarf_str_size) |
730 | return NULL; | |
f075ee0c AM |
731 | str = (char *) stash->dwarf_str_buffer + offset; |
732 | if (*str == '\0') | |
d03ba2a1 | 733 | return NULL; |
f075ee0c | 734 | return str; |
d03ba2a1 JJ |
735 | } |
736 | ||
0041f7df JK |
737 | /* Like read_indirect_string but from .debug_line_str section. */ |
738 | ||
739 | static char * | |
740 | read_indirect_line_string (struct comp_unit * unit, | |
07d6d2b8 AM |
741 | bfd_byte * buf, |
742 | bfd_byte * buf_end, | |
0041f7df JK |
743 | unsigned int * bytes_read_ptr) |
744 | { | |
745 | bfd_uint64_t offset; | |
746 | struct dwarf2_debug *stash = unit->stash; | |
747 | char *str; | |
748 | ||
749 | if (buf + unit->offset_size > buf_end) | |
750 | { | |
751 | * bytes_read_ptr = 0; | |
752 | return NULL; | |
753 | } | |
754 | ||
755 | if (unit->offset_size == 4) | |
756 | offset = read_4_bytes (unit->abfd, buf, buf_end); | |
757 | else | |
758 | offset = read_8_bytes (unit->abfd, buf, buf_end); | |
759 | ||
760 | *bytes_read_ptr = unit->offset_size; | |
761 | ||
762 | if (! read_section (unit->abfd, &stash->debug_sections[debug_line_str], | |
763 | stash->syms, offset, | |
764 | &stash->dwarf_line_str_buffer, | |
765 | &stash->dwarf_line_str_size)) | |
766 | return NULL; | |
767 | ||
768 | if (offset >= stash->dwarf_line_str_size) | |
769 | return NULL; | |
770 | str = (char *) stash->dwarf_line_str_buffer + offset; | |
771 | if (*str == '\0') | |
772 | return NULL; | |
773 | return str; | |
774 | } | |
775 | ||
95e34fb4 | 776 | /* Like read_indirect_string but uses a .debug_str located in |
93ee1e36 | 777 | an alternate file pointed to by the .gnu_debugaltlink section. |
95e34fb4 NC |
778 | Used to impement DW_FORM_GNU_strp_alt. */ |
779 | ||
780 | static char * | |
781 | read_alt_indirect_string (struct comp_unit * unit, | |
07d6d2b8 AM |
782 | bfd_byte * buf, |
783 | bfd_byte * buf_end, | |
95e34fb4 NC |
784 | unsigned int * bytes_read_ptr) |
785 | { | |
786 | bfd_uint64_t offset; | |
787 | struct dwarf2_debug *stash = unit->stash; | |
788 | char *str; | |
789 | ||
dbb3fbbb NC |
790 | if (buf + unit->offset_size > buf_end) |
791 | { | |
792 | * bytes_read_ptr = 0; | |
793 | return NULL; | |
794 | } | |
62f8d217 | 795 | |
95e34fb4 | 796 | if (unit->offset_size == 4) |
dbb3fbbb | 797 | offset = read_4_bytes (unit->abfd, buf, buf_end); |
95e34fb4 | 798 | else |
dbb3fbbb | 799 | offset = read_8_bytes (unit->abfd, buf, buf_end); |
95e34fb4 NC |
800 | |
801 | *bytes_read_ptr = unit->offset_size; | |
802 | ||
803 | if (stash->alt_bfd_ptr == NULL) | |
804 | { | |
217d2eaa AM |
805 | bfd *debug_bfd; |
806 | char *debug_filename = bfd_follow_gnu_debugaltlink (unit->abfd, DEBUGDIR); | |
95e34fb4 NC |
807 | |
808 | if (debug_filename == NULL) | |
809 | return NULL; | |
810 | ||
217d2eaa AM |
811 | debug_bfd = bfd_openr (debug_filename, NULL); |
812 | free (debug_filename); | |
813 | if (debug_bfd == NULL) | |
814 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
815 | return NULL; | |
95e34fb4 | 816 | |
217d2eaa AM |
817 | if (!bfd_check_format (debug_bfd, bfd_object)) |
818 | { | |
819 | bfd_close (debug_bfd); | |
95e34fb4 NC |
820 | return NULL; |
821 | } | |
822 | stash->alt_bfd_ptr = debug_bfd; | |
823 | } | |
62f8d217 | 824 | |
95e34fb4 NC |
825 | if (! read_section (unit->stash->alt_bfd_ptr, |
826 | stash->debug_sections + debug_str_alt, | |
827 | NULL, /* FIXME: Do we need to load alternate symbols ? */ | |
828 | offset, | |
829 | &stash->alt_dwarf_str_buffer, | |
830 | &stash->alt_dwarf_str_size)) | |
831 | return NULL; | |
832 | ||
dbb3fbbb NC |
833 | if (offset >= stash->alt_dwarf_str_size) |
834 | return NULL; | |
95e34fb4 NC |
835 | str = (char *) stash->alt_dwarf_str_buffer + offset; |
836 | if (*str == '\0') | |
837 | return NULL; | |
838 | ||
839 | return str; | |
840 | } | |
841 | ||
842 | /* Resolve an alternate reference from UNIT at OFFSET. | |
843 | Returns a pointer into the loaded alternate CU upon success | |
844 | or NULL upon failure. */ | |
845 | ||
846 | static bfd_byte * | |
847 | read_alt_indirect_ref (struct comp_unit * unit, | |
848 | bfd_uint64_t offset) | |
849 | { | |
850 | struct dwarf2_debug *stash = unit->stash; | |
851 | ||
852 | if (stash->alt_bfd_ptr == NULL) | |
853 | { | |
217d2eaa AM |
854 | bfd *debug_bfd; |
855 | char *debug_filename = bfd_follow_gnu_debugaltlink (unit->abfd, DEBUGDIR); | |
95e34fb4 NC |
856 | |
857 | if (debug_filename == NULL) | |
858 | return FALSE; | |
859 | ||
217d2eaa AM |
860 | debug_bfd = bfd_openr (debug_filename, NULL); |
861 | free (debug_filename); | |
862 | if (debug_bfd == NULL) | |
863 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
864 | return NULL; | |
95e34fb4 | 865 | |
217d2eaa AM |
866 | if (!bfd_check_format (debug_bfd, bfd_object)) |
867 | { | |
868 | bfd_close (debug_bfd); | |
95e34fb4 NC |
869 | return NULL; |
870 | } | |
871 | stash->alt_bfd_ptr = debug_bfd; | |
872 | } | |
62f8d217 | 873 | |
95e34fb4 NC |
874 | if (! read_section (unit->stash->alt_bfd_ptr, |
875 | stash->debug_sections + debug_info_alt, | |
876 | NULL, /* FIXME: Do we need to load alternate symbols ? */ | |
877 | offset, | |
878 | &stash->alt_dwarf_info_buffer, | |
879 | &stash->alt_dwarf_info_size)) | |
880 | return NULL; | |
881 | ||
dbb3fbbb NC |
882 | if (offset >= stash->alt_dwarf_info_size) |
883 | return NULL; | |
95e34fb4 NC |
884 | return stash->alt_dwarf_info_buffer + offset; |
885 | } | |
886 | ||
8ce8c090 | 887 | static bfd_uint64_t |
dbb3fbbb | 888 | read_address (struct comp_unit *unit, bfd_byte *buf, bfd_byte * buf_end) |
252b5132 | 889 | { |
fa15f18d AM |
890 | int signed_vma = 0; |
891 | ||
892 | if (bfd_get_flavour (unit->abfd) == bfd_target_elf_flavour) | |
893 | signed_vma = get_elf_backend_data (unit->abfd)->sign_extend_vma; | |
0af4cd7c | 894 | |
dbb3fbbb NC |
895 | if (buf + unit->addr_size > buf_end) |
896 | return 0; | |
897 | ||
0af4cd7c PK |
898 | if (signed_vma) |
899 | { | |
900 | switch (unit->addr_size) | |
901 | { | |
902 | case 8: | |
903 | return bfd_get_signed_64 (unit->abfd, buf); | |
904 | case 4: | |
905 | return bfd_get_signed_32 (unit->abfd, buf); | |
906 | case 2: | |
907 | return bfd_get_signed_16 (unit->abfd, buf); | |
908 | default: | |
909 | abort (); | |
910 | } | |
911 | } | |
912 | else | |
252b5132 | 913 | { |
0af4cd7c PK |
914 | switch (unit->addr_size) |
915 | { | |
916 | case 8: | |
917 | return bfd_get_64 (unit->abfd, buf); | |
918 | case 4: | |
919 | return bfd_get_32 (unit->abfd, buf); | |
920 | case 2: | |
921 | return bfd_get_16 (unit->abfd, buf); | |
922 | default: | |
923 | abort (); | |
924 | } | |
252b5132 | 925 | } |
252b5132 RH |
926 | } |
927 | ||
252b5132 RH |
928 | /* Lookup an abbrev_info structure in the abbrev hash table. */ |
929 | ||
930 | static struct abbrev_info * | |
818a27ac | 931 | lookup_abbrev (unsigned int number, struct abbrev_info **abbrevs) |
252b5132 RH |
932 | { |
933 | unsigned int hash_number; | |
934 | struct abbrev_info *abbrev; | |
935 | ||
936 | hash_number = number % ABBREV_HASH_SIZE; | |
937 | abbrev = abbrevs[hash_number]; | |
938 | ||
939 | while (abbrev) | |
940 | { | |
941 | if (abbrev->number == number) | |
942 | return abbrev; | |
943 | else | |
944 | abbrev = abbrev->next; | |
945 | } | |
98591c73 | 946 | |
252b5132 RH |
947 | return NULL; |
948 | } | |
949 | ||
950 | /* In DWARF version 2, the description of the debugging information is | |
951 | stored in a separate .debug_abbrev section. Before we read any | |
952 | dies from a section we read in all abbreviations and install them | |
953 | in a hash table. */ | |
954 | ||
955 | static struct abbrev_info** | |
8ce8c090 | 956 | read_abbrevs (bfd *abfd, bfd_uint64_t offset, struct dwarf2_debug *stash) |
252b5132 RH |
957 | { |
958 | struct abbrev_info **abbrevs; | |
f075ee0c | 959 | bfd_byte *abbrev_ptr; |
dbb3fbbb | 960 | bfd_byte *abbrev_end; |
252b5132 RH |
961 | struct abbrev_info *cur_abbrev; |
962 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
963 | unsigned int abbrev_form, hash_number; | |
dc810e39 | 964 | bfd_size_type amt; |
252b5132 | 965 | |
fc28f9aa | 966 | if (! read_section (abfd, &stash->debug_sections[debug_abbrev], |
93ee1e36 | 967 | stash->syms, offset, |
9e32b19f | 968 | &stash->dwarf_abbrev_buffer, &stash->dwarf_abbrev_size)) |
8af6b354 | 969 | return NULL; |
252b5132 | 970 | |
dbb3fbbb NC |
971 | if (offset >= stash->dwarf_abbrev_size) |
972 | return NULL; | |
973 | ||
dc810e39 | 974 | amt = sizeof (struct abbrev_info*) * ABBREV_HASH_SIZE; |
a50b1753 | 975 | abbrevs = (struct abbrev_info **) bfd_zalloc (abfd, amt); |
8af6b354 AM |
976 | if (abbrevs == NULL) |
977 | return NULL; | |
252b5132 RH |
978 | |
979 | abbrev_ptr = stash->dwarf_abbrev_buffer + offset; | |
dbb3fbbb | 980 | abbrev_end = stash->dwarf_abbrev_buffer + stash->dwarf_abbrev_size; |
c7c3d11b PA |
981 | abbrev_number = _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, |
982 | FALSE, abbrev_end); | |
252b5132 RH |
983 | abbrev_ptr += bytes_read; |
984 | ||
a092b084 | 985 | /* Loop until we reach an abbrev number of 0. */ |
252b5132 RH |
986 | while (abbrev_number) |
987 | { | |
dc810e39 | 988 | amt = sizeof (struct abbrev_info); |
a50b1753 | 989 | cur_abbrev = (struct abbrev_info *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
990 | if (cur_abbrev == NULL) |
991 | return NULL; | |
252b5132 | 992 | |
a092b084 | 993 | /* Read in abbrev header. */ |
252b5132 | 994 | cur_abbrev->number = abbrev_number; |
d45913a0 | 995 | cur_abbrev->tag = (enum dwarf_tag) |
4265548c PA |
996 | _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, |
997 | FALSE, abbrev_end); | |
252b5132 | 998 | abbrev_ptr += bytes_read; |
dbb3fbbb | 999 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr, abbrev_end); |
252b5132 RH |
1000 | abbrev_ptr += 1; |
1001 | ||
a092b084 | 1002 | /* Now read in declarations. */ |
0041f7df | 1003 | for (;;) |
252b5132 | 1004 | { |
0041f7df JK |
1005 | /* Initialize it just to avoid a GCC false warning. */ |
1006 | bfd_vma implicit_const = -1; | |
1007 | ||
1008 | abbrev_name = _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, | |
1009 | FALSE, abbrev_end); | |
1010 | abbrev_ptr += bytes_read; | |
1011 | abbrev_form = _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, | |
1012 | FALSE, abbrev_end); | |
1013 | abbrev_ptr += bytes_read; | |
1014 | if (abbrev_form == DW_FORM_implicit_const) | |
1015 | { | |
1016 | implicit_const = _bfd_safe_read_leb128 (abfd, abbrev_ptr, | |
1017 | &bytes_read, TRUE, | |
1018 | abbrev_end); | |
1019 | abbrev_ptr += bytes_read; | |
1020 | } | |
1021 | ||
1022 | if (abbrev_name == 0) | |
1023 | break; | |
1024 | ||
252b5132 RH |
1025 | if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0) |
1026 | { | |
35330cce NC |
1027 | struct attr_abbrev *tmp; |
1028 | ||
dc810e39 AM |
1029 | amt = cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK; |
1030 | amt *= sizeof (struct attr_abbrev); | |
a50b1753 | 1031 | tmp = (struct attr_abbrev *) bfd_realloc (cur_abbrev->attrs, amt); |
35330cce | 1032 | if (tmp == NULL) |
d8d1c398 AM |
1033 | { |
1034 | size_t i; | |
1035 | ||
1036 | for (i = 0; i < ABBREV_HASH_SIZE; i++) | |
1037 | { | |
1038 | struct abbrev_info *abbrev = abbrevs[i]; | |
1039 | ||
1040 | while (abbrev) | |
1041 | { | |
34b5e0b2 NC |
1042 | free (abbrev->attrs); |
1043 | abbrev = abbrev->next; | |
d8d1c398 AM |
1044 | } |
1045 | } | |
1046 | return NULL; | |
1047 | } | |
35330cce | 1048 | cur_abbrev->attrs = tmp; |
252b5132 | 1049 | } |
98591c73 | 1050 | |
d45913a0 DA |
1051 | cur_abbrev->attrs[cur_abbrev->num_attrs].name |
1052 | = (enum dwarf_attribute) abbrev_name; | |
0041f7df | 1053 | cur_abbrev->attrs[cur_abbrev->num_attrs].form |
d45913a0 | 1054 | = (enum dwarf_form) abbrev_form; |
0041f7df JK |
1055 | cur_abbrev->attrs[cur_abbrev->num_attrs].implicit_const |
1056 | = implicit_const; | |
1057 | ++cur_abbrev->num_attrs; | |
252b5132 RH |
1058 | } |
1059 | ||
1060 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
1061 | cur_abbrev->next = abbrevs[hash_number]; | |
1062 | abbrevs[hash_number] = cur_abbrev; | |
1063 | ||
1064 | /* Get next abbreviation. | |
e82ce529 | 1065 | Under Irix6 the abbreviations for a compilation unit are not |
252b5132 RH |
1066 | always properly terminated with an abbrev number of 0. |
1067 | Exit loop if we encounter an abbreviation which we have | |
1068 | already read (which means we are about to read the abbreviations | |
1069 | for the next compile unit) or if the end of the abbreviation | |
1070 | table is reached. */ | |
1071 | if ((unsigned int) (abbrev_ptr - stash->dwarf_abbrev_buffer) | |
d8d1c398 | 1072 | >= stash->dwarf_abbrev_size) |
252b5132 | 1073 | break; |
4265548c PA |
1074 | abbrev_number = _bfd_safe_read_leb128 (abfd, abbrev_ptr, |
1075 | &bytes_read, FALSE, abbrev_end); | |
252b5132 | 1076 | abbrev_ptr += bytes_read; |
dbb3fbbb | 1077 | if (lookup_abbrev (abbrev_number, abbrevs) != NULL) |
252b5132 RH |
1078 | break; |
1079 | } | |
1080 | ||
1081 | return abbrevs; | |
1082 | } | |
1083 | ||
60d77146 NC |
1084 | /* Returns true if the form is one which has a string value. */ |
1085 | ||
1086 | static inline bfd_boolean | |
1087 | is_str_attr (enum dwarf_form form) | |
1088 | { | |
0041f7df JK |
1089 | return (form == DW_FORM_string || form == DW_FORM_strp |
1090 | || form == DW_FORM_line_strp || form == DW_FORM_GNU_strp_alt); | |
60d77146 NC |
1091 | } |
1092 | ||
dbb3fbbb NC |
1093 | /* Read and fill in the value of attribute ATTR as described by FORM. |
1094 | Read data starting from INFO_PTR, but never at or beyond INFO_PTR_END. | |
1095 | Returns an updated INFO_PTR taking into account the amount of data read. */ | |
252b5132 | 1096 | |
f075ee0c | 1097 | static bfd_byte * |
dbb3fbbb | 1098 | read_attribute_value (struct attribute * attr, |
07d6d2b8 AM |
1099 | unsigned form, |
1100 | bfd_vma implicit_const, | |
dbb3fbbb | 1101 | struct comp_unit * unit, |
07d6d2b8 AM |
1102 | bfd_byte * info_ptr, |
1103 | bfd_byte * info_ptr_end) | |
252b5132 RH |
1104 | { |
1105 | bfd *abfd = unit->abfd; | |
1106 | unsigned int bytes_read; | |
1107 | struct dwarf_block *blk; | |
dc810e39 | 1108 | bfd_size_type amt; |
252b5132 | 1109 | |
a97fbc7e | 1110 | if (info_ptr >= info_ptr_end && form != DW_FORM_flag_present) |
dbb3fbbb | 1111 | { |
9793eb77 | 1112 | _bfd_error_handler (_("DWARF error: info pointer extends beyond end of attributes")); |
dbb3fbbb NC |
1113 | bfd_set_error (bfd_error_bad_value); |
1114 | return info_ptr; | |
1115 | } | |
1116 | ||
d45913a0 | 1117 | attr->form = (enum dwarf_form) form; |
98591c73 | 1118 | |
cf716c56 | 1119 | switch (form) |
252b5132 | 1120 | { |
252b5132 | 1121 | case DW_FORM_ref_addr: |
5609a71e DJ |
1122 | /* DW_FORM_ref_addr is an address in DWARF2, and an offset in |
1123 | DWARF3. */ | |
c07cbdd7 | 1124 | if (unit->version == 3 || unit->version == 4) |
5609a71e DJ |
1125 | { |
1126 | if (unit->offset_size == 4) | |
dbb3fbbb | 1127 | attr->u.val = read_4_bytes (unit->abfd, info_ptr, info_ptr_end); |
5609a71e | 1128 | else |
dbb3fbbb | 1129 | attr->u.val = read_8_bytes (unit->abfd, info_ptr, info_ptr_end); |
5609a71e DJ |
1130 | info_ptr += unit->offset_size; |
1131 | break; | |
1132 | } | |
1133 | /* FALLTHROUGH */ | |
1134 | case DW_FORM_addr: | |
dbb3fbbb | 1135 | attr->u.val = read_address (unit, info_ptr, info_ptr_end); |
252b5132 RH |
1136 | info_ptr += unit->addr_size; |
1137 | break; | |
95e34fb4 | 1138 | case DW_FORM_GNU_ref_alt: |
c07cbdd7 JJ |
1139 | case DW_FORM_sec_offset: |
1140 | if (unit->offset_size == 4) | |
dbb3fbbb | 1141 | attr->u.val = read_4_bytes (unit->abfd, info_ptr, info_ptr_end); |
c07cbdd7 | 1142 | else |
dbb3fbbb | 1143 | attr->u.val = read_8_bytes (unit->abfd, info_ptr, info_ptr_end); |
c07cbdd7 JJ |
1144 | info_ptr += unit->offset_size; |
1145 | break; | |
252b5132 | 1146 | case DW_FORM_block2: |
dc810e39 | 1147 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1148 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1149 | if (blk == NULL) |
1150 | return NULL; | |
dbb3fbbb | 1151 | blk->size = read_2_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 | 1152 | info_ptr += 2; |
12c96342 | 1153 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1154 | attr->u.blk = blk; |
252b5132 RH |
1155 | break; |
1156 | case DW_FORM_block4: | |
dc810e39 | 1157 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1158 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1159 | if (blk == NULL) |
1160 | return NULL; | |
dbb3fbbb | 1161 | blk->size = read_4_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 | 1162 | info_ptr += 4; |
12c96342 | 1163 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1164 | attr->u.blk = blk; |
252b5132 RH |
1165 | break; |
1166 | case DW_FORM_data2: | |
dbb3fbbb | 1167 | attr->u.val = read_2_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1168 | info_ptr += 2; |
1169 | break; | |
1170 | case DW_FORM_data4: | |
dbb3fbbb | 1171 | attr->u.val = read_4_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1172 | info_ptr += 4; |
1173 | break; | |
1174 | case DW_FORM_data8: | |
dbb3fbbb | 1175 | attr->u.val = read_8_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1176 | info_ptr += 8; |
1177 | break; | |
1178 | case DW_FORM_string: | |
dbb3fbbb | 1179 | attr->u.str = read_string (abfd, info_ptr, info_ptr_end, &bytes_read); |
252b5132 RH |
1180 | info_ptr += bytes_read; |
1181 | break; | |
d03ba2a1 | 1182 | case DW_FORM_strp: |
dbb3fbbb | 1183 | attr->u.str = read_indirect_string (unit, info_ptr, info_ptr_end, &bytes_read); |
d03ba2a1 JJ |
1184 | info_ptr += bytes_read; |
1185 | break; | |
0041f7df JK |
1186 | case DW_FORM_line_strp: |
1187 | attr->u.str = read_indirect_line_string (unit, info_ptr, info_ptr_end, &bytes_read); | |
1188 | info_ptr += bytes_read; | |
1189 | break; | |
95e34fb4 | 1190 | case DW_FORM_GNU_strp_alt: |
dbb3fbbb | 1191 | attr->u.str = read_alt_indirect_string (unit, info_ptr, info_ptr_end, &bytes_read); |
95e34fb4 NC |
1192 | info_ptr += bytes_read; |
1193 | break; | |
c07cbdd7 | 1194 | case DW_FORM_exprloc: |
252b5132 | 1195 | case DW_FORM_block: |
dc810e39 | 1196 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1197 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1198 | if (blk == NULL) |
1199 | return NULL; | |
4265548c PA |
1200 | blk->size = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1201 | FALSE, info_ptr_end); | |
252b5132 | 1202 | info_ptr += bytes_read; |
12c96342 | 1203 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1204 | attr->u.blk = blk; |
252b5132 RH |
1205 | break; |
1206 | case DW_FORM_block1: | |
dc810e39 | 1207 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1208 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1209 | if (blk == NULL) |
1210 | return NULL; | |
dbb3fbbb | 1211 | blk->size = read_1_byte (abfd, info_ptr, info_ptr_end); |
252b5132 | 1212 | info_ptr += 1; |
12c96342 | 1213 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1214 | attr->u.blk = blk; |
252b5132 RH |
1215 | break; |
1216 | case DW_FORM_data1: | |
dbb3fbbb | 1217 | attr->u.val = read_1_byte (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1218 | info_ptr += 1; |
1219 | break; | |
1220 | case DW_FORM_flag: | |
dbb3fbbb | 1221 | attr->u.val = read_1_byte (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1222 | info_ptr += 1; |
1223 | break; | |
c07cbdd7 JJ |
1224 | case DW_FORM_flag_present: |
1225 | attr->u.val = 1; | |
1226 | break; | |
252b5132 | 1227 | case DW_FORM_sdata: |
4265548c PA |
1228 | attr->u.sval = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1229 | TRUE, info_ptr_end); | |
252b5132 RH |
1230 | info_ptr += bytes_read; |
1231 | break; | |
1232 | case DW_FORM_udata: | |
4265548c PA |
1233 | attr->u.val = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1234 | FALSE, info_ptr_end); | |
252b5132 RH |
1235 | info_ptr += bytes_read; |
1236 | break; | |
1237 | case DW_FORM_ref1: | |
dbb3fbbb | 1238 | attr->u.val = read_1_byte (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1239 | info_ptr += 1; |
1240 | break; | |
1241 | case DW_FORM_ref2: | |
dbb3fbbb | 1242 | attr->u.val = read_2_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1243 | info_ptr += 2; |
1244 | break; | |
1245 | case DW_FORM_ref4: | |
dbb3fbbb | 1246 | attr->u.val = read_4_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1247 | info_ptr += 4; |
1248 | break; | |
81edd86d | 1249 | case DW_FORM_ref8: |
dbb3fbbb | 1250 | attr->u.val = read_8_bytes (abfd, info_ptr, info_ptr_end); |
81edd86d MM |
1251 | info_ptr += 8; |
1252 | break; | |
a37a68dd | 1253 | case DW_FORM_ref_sig8: |
dbb3fbbb | 1254 | attr->u.val = read_8_bytes (abfd, info_ptr, info_ptr_end); |
a37a68dd CC |
1255 | info_ptr += 8; |
1256 | break; | |
252b5132 | 1257 | case DW_FORM_ref_udata: |
4265548c PA |
1258 | attr->u.val = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1259 | FALSE, info_ptr_end); | |
252b5132 RH |
1260 | info_ptr += bytes_read; |
1261 | break; | |
252b5132 | 1262 | case DW_FORM_indirect: |
4265548c PA |
1263 | form = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1264 | FALSE, info_ptr_end); | |
cf716c56 | 1265 | info_ptr += bytes_read; |
0041f7df JK |
1266 | if (form == DW_FORM_implicit_const) |
1267 | { | |
1268 | implicit_const = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, | |
1269 | TRUE, info_ptr_end); | |
1270 | info_ptr += bytes_read; | |
1271 | } | |
1272 | info_ptr = read_attribute_value (attr, form, implicit_const, unit, | |
1273 | info_ptr, info_ptr_end); | |
1274 | break; | |
1275 | case DW_FORM_implicit_const: | |
1276 | attr->form = DW_FORM_sdata; | |
1277 | attr->u.sval = implicit_const; | |
cf716c56 | 1278 | break; |
252b5132 | 1279 | default: |
9793eb77 | 1280 | _bfd_error_handler (_("DWARF error: invalid or unhandled FORM value: %#x"), |
4eca0228 | 1281 | form); |
252b5132 | 1282 | bfd_set_error (bfd_error_bad_value); |
c07cbdd7 | 1283 | return NULL; |
252b5132 RH |
1284 | } |
1285 | return info_ptr; | |
1286 | } | |
1287 | ||
cf716c56 RH |
1288 | /* Read an attribute described by an abbreviated attribute. */ |
1289 | ||
f075ee0c | 1290 | static bfd_byte * |
dbb3fbbb NC |
1291 | read_attribute (struct attribute * attr, |
1292 | struct attr_abbrev * abbrev, | |
1293 | struct comp_unit * unit, | |
07d6d2b8 AM |
1294 | bfd_byte * info_ptr, |
1295 | bfd_byte * info_ptr_end) | |
cf716c56 RH |
1296 | { |
1297 | attr->name = abbrev->name; | |
0041f7df JK |
1298 | info_ptr = read_attribute_value (attr, abbrev->form, abbrev->implicit_const, |
1299 | unit, info_ptr, info_ptr_end); | |
cf716c56 RH |
1300 | return info_ptr; |
1301 | } | |
1302 | ||
e00e8198 AM |
1303 | /* Return whether DW_AT_name will return the same as DW_AT_linkage_name |
1304 | for a function. */ | |
1305 | ||
1306 | static bfd_boolean | |
1307 | non_mangled (int lang) | |
1308 | { | |
1309 | switch (lang) | |
1310 | { | |
1311 | default: | |
1312 | return FALSE; | |
1313 | ||
1314 | case DW_LANG_C89: | |
1315 | case DW_LANG_C: | |
1316 | case DW_LANG_Ada83: | |
1317 | case DW_LANG_Cobol74: | |
1318 | case DW_LANG_Cobol85: | |
1319 | case DW_LANG_Fortran77: | |
1320 | case DW_LANG_Pascal83: | |
1321 | case DW_LANG_C99: | |
1322 | case DW_LANG_Ada95: | |
1323 | case DW_LANG_PLI: | |
1324 | case DW_LANG_UPC: | |
1325 | case DW_LANG_C11: | |
1326 | return TRUE; | |
1327 | } | |
1328 | } | |
1329 | ||
a092b084 | 1330 | /* Source line information table routines. */ |
252b5132 RH |
1331 | |
1332 | #define FILE_ALLOC_CHUNK 5 | |
1333 | #define DIR_ALLOC_CHUNK 5 | |
1334 | ||
a092b084 NC |
1335 | struct line_info |
1336 | { | |
089e3718 IT |
1337 | struct line_info * prev_line; |
1338 | bfd_vma address; | |
1339 | char * filename; | |
1340 | unsigned int line; | |
1341 | unsigned int column; | |
1342 | unsigned int discriminator; | |
1343 | unsigned char op_index; | |
1344 | unsigned char end_sequence; /* End of (sequential) code sequence. */ | |
252b5132 RH |
1345 | }; |
1346 | ||
a092b084 NC |
1347 | struct fileinfo |
1348 | { | |
089e3718 IT |
1349 | char * name; |
1350 | unsigned int dir; | |
1351 | unsigned int time; | |
1352 | unsigned int size; | |
252b5132 RH |
1353 | }; |
1354 | ||
0ee19663 NC |
1355 | struct line_sequence |
1356 | { | |
07d6d2b8 | 1357 | bfd_vma low_pc; |
0ee19663 | 1358 | struct line_sequence* prev_sequence; |
07d6d2b8 AM |
1359 | struct line_info* last_line; /* Largest VMA. */ |
1360 | struct line_info** line_info_lookup; | |
089e3718 | 1361 | bfd_size_type num_lines; |
0ee19663 NC |
1362 | }; |
1363 | ||
a092b084 NC |
1364 | struct line_info_table |
1365 | { | |
07d6d2b8 AM |
1366 | bfd * abfd; |
1367 | unsigned int num_files; | |
1368 | unsigned int num_dirs; | |
1369 | unsigned int num_sequences; | |
1370 | char * comp_dir; | |
1371 | char ** dirs; | |
1372 | struct fileinfo* files; | |
0ee19663 | 1373 | struct line_sequence* sequences; |
07d6d2b8 | 1374 | struct line_info* lcl_head; /* Local head; used in 'add_line_info'. */ |
252b5132 RH |
1375 | }; |
1376 | ||
4ab527b0 FF |
1377 | /* Remember some information about each function. If the function is |
1378 | inlined (DW_TAG_inlined_subroutine) it may have two additional | |
1379 | attributes, DW_AT_call_file and DW_AT_call_line, which specify the | |
a2a50954 | 1380 | source code location where this function was inlined. */ |
4ab527b0 | 1381 | |
1ee24f27 DJ |
1382 | struct funcinfo |
1383 | { | |
a2a50954 | 1384 | /* Pointer to previous function in list of all functions. */ |
089e3718 | 1385 | struct funcinfo * prev_func; |
a2a50954 | 1386 | /* Pointer to function one scope higher. */ |
089e3718 | 1387 | struct funcinfo * caller_func; |
a2a50954 | 1388 | /* Source location file name where caller_func inlines this func. */ |
089e3718 | 1389 | char * caller_file; |
a2a50954 | 1390 | /* Source location file name. */ |
089e3718 | 1391 | char * file; |
e00e8198 | 1392 | /* Source location line number where caller_func inlines this func. */ |
089e3718 | 1393 | int caller_line; |
a2a50954 | 1394 | /* Source location line number. */ |
089e3718 IT |
1395 | int line; |
1396 | int tag; | |
3b0d929d | 1397 | bfd_boolean is_linkage; |
089e3718 IT |
1398 | const char * name; |
1399 | struct arange arange; | |
a2a50954 | 1400 | /* Where the symbol is defined. */ |
089e3718 IT |
1401 | asection * sec; |
1402 | }; | |
1403 | ||
1404 | struct lookup_funcinfo | |
1405 | { | |
1406 | /* Function information corresponding to this lookup table entry. */ | |
1407 | struct funcinfo * funcinfo; | |
1408 | ||
1409 | /* The lowest address for this specific function. */ | |
07d6d2b8 | 1410 | bfd_vma low_addr; |
089e3718 IT |
1411 | |
1412 | /* The highest address of this function before the lookup table is sorted. | |
1413 | The highest address of all prior functions after the lookup table is | |
1414 | sorted, which is used for binary search. */ | |
07d6d2b8 | 1415 | bfd_vma high_addr; |
5420f73d L |
1416 | }; |
1417 | ||
1418 | struct varinfo | |
1419 | { | |
709d67f1 | 1420 | /* Pointer to previous variable in list of all variables */ |
5420f73d | 1421 | struct varinfo *prev_var; |
709d67f1 | 1422 | /* Source location file name */ |
5420f73d | 1423 | char *file; |
709d67f1 | 1424 | /* Source location line number */ |
5420f73d L |
1425 | int line; |
1426 | int tag; | |
1427 | char *name; | |
5cf2e3f0 | 1428 | bfd_vma addr; |
709d67f1 | 1429 | /* Where the symbol is defined */ |
5420f73d | 1430 | asection *sec; |
709d67f1 | 1431 | /* Is this a stack variable? */ |
5420f73d | 1432 | unsigned int stack: 1; |
1ee24f27 DJ |
1433 | }; |
1434 | ||
d4c32a81 L |
1435 | /* Return TRUE if NEW_LINE should sort after LINE. */ |
1436 | ||
1437 | static inline bfd_boolean | |
1438 | new_line_sorts_after (struct line_info *new_line, struct line_info *line) | |
1439 | { | |
1440 | return (new_line->address > line->address | |
1441 | || (new_line->address == line->address | |
20230942 | 1442 | && new_line->op_index > line->op_index)); |
d4c32a81 L |
1443 | } |
1444 | ||
1445 | ||
af3ef9fe NC |
1446 | /* Adds a new entry to the line_info list in the line_info_table, ensuring |
1447 | that the list is sorted. Note that the line_info list is sorted from | |
1448 | highest to lowest VMA (with possible duplicates); that is, | |
1449 | line_info->prev_line always accesses an equal or smaller VMA. */ | |
1450 | ||
8af6b354 | 1451 | static bfd_boolean |
818a27ac AM |
1452 | add_line_info (struct line_info_table *table, |
1453 | bfd_vma address, | |
a233b20c | 1454 | unsigned char op_index, |
818a27ac AM |
1455 | char *filename, |
1456 | unsigned int line, | |
1457 | unsigned int column, | |
9b8d1a36 | 1458 | unsigned int discriminator, |
818a27ac | 1459 | int end_sequence) |
252b5132 | 1460 | { |
dc810e39 | 1461 | bfd_size_type amt = sizeof (struct line_info); |
0ee19663 | 1462 | struct line_sequence* seq = table->sequences; |
a50b1753 | 1463 | struct line_info* info = (struct line_info *) bfd_alloc (table->abfd, amt); |
252b5132 | 1464 | |
8af6b354 AM |
1465 | if (info == NULL) |
1466 | return FALSE; | |
1467 | ||
d4c32a81 | 1468 | /* Set member data of 'info'. */ |
f5296ddc | 1469 | info->prev_line = NULL; |
d4c32a81 | 1470 | info->address = address; |
a233b20c | 1471 | info->op_index = op_index; |
d4c32a81 L |
1472 | info->line = line; |
1473 | info->column = column; | |
9b8d1a36 | 1474 | info->discriminator = discriminator; |
d4c32a81 L |
1475 | info->end_sequence = end_sequence; |
1476 | ||
1477 | if (filename && filename[0]) | |
1478 | { | |
a50b1753 | 1479 | info->filename = (char *) bfd_alloc (table->abfd, strlen (filename) + 1); |
8af6b354 AM |
1480 | if (info->filename == NULL) |
1481 | return FALSE; | |
1482 | strcpy (info->filename, filename); | |
d4c32a81 L |
1483 | } |
1484 | else | |
1485 | info->filename = NULL; | |
1486 | ||
e82ce529 AM |
1487 | /* Find the correct location for 'info'. Normally we will receive |
1488 | new line_info data 1) in order and 2) with increasing VMAs. | |
1489 | However some compilers break the rules (cf. decode_line_info) and | |
1490 | so we include some heuristics for quickly finding the correct | |
1491 | location for 'info'. In particular, these heuristics optimize for | |
1492 | the common case in which the VMA sequence that we receive is a | |
1493 | list of locally sorted VMAs such as | |
1494 | p...z a...j (where a < j < p < z) | |
252b5132 | 1495 | |
e82ce529 | 1496 | Note: table->lcl_head is used to head an *actual* or *possible* |
0ee19663 | 1497 | sub-sequence within the list (such as a...j) that is not directly |
e82ce529 AM |
1498 | headed by table->last_line |
1499 | ||
1500 | Note: we may receive duplicate entries from 'decode_line_info'. */ | |
1501 | ||
0ee19663 NC |
1502 | if (seq |
1503 | && seq->last_line->address == address | |
a233b20c | 1504 | && seq->last_line->op_index == op_index |
0ee19663 | 1505 | && seq->last_line->end_sequence == end_sequence) |
aff90a5f L |
1506 | { |
1507 | /* We only keep the last entry with the same address and end | |
1508 | sequence. See PR ld/4986. */ | |
0ee19663 | 1509 | if (table->lcl_head == seq->last_line) |
aff90a5f | 1510 | table->lcl_head = info; |
0ee19663 NC |
1511 | info->prev_line = seq->last_line->prev_line; |
1512 | seq->last_line = info; | |
aff90a5f | 1513 | } |
0ee19663 | 1514 | else if (!seq || seq->last_line->end_sequence) |
d8d1c398 | 1515 | { |
0ee19663 NC |
1516 | /* Start a new line sequence. */ |
1517 | amt = sizeof (struct line_sequence); | |
1518 | seq = (struct line_sequence *) bfd_malloc (amt); | |
8af6b354 AM |
1519 | if (seq == NULL) |
1520 | return FALSE; | |
0ee19663 NC |
1521 | seq->low_pc = address; |
1522 | seq->prev_sequence = table->sequences; | |
1523 | seq->last_line = info; | |
1524 | table->lcl_head = info; | |
1525 | table->sequences = seq; | |
1526 | table->num_sequences++; | |
1527 | } | |
20230942 AM |
1528 | else if (info->end_sequence |
1529 | || new_line_sorts_after (info, seq->last_line)) | |
0ee19663 NC |
1530 | { |
1531 | /* Normal case: add 'info' to the beginning of the current sequence. */ | |
1532 | info->prev_line = seq->last_line; | |
1533 | seq->last_line = info; | |
e82ce529 | 1534 | |
d8d1c398 AM |
1535 | /* lcl_head: initialize to head a *possible* sequence at the end. */ |
1536 | if (!table->lcl_head) | |
1537 | table->lcl_head = info; | |
1538 | } | |
1539 | else if (!new_line_sorts_after (info, table->lcl_head) | |
1540 | && (!table->lcl_head->prev_line | |
1541 | || new_line_sorts_after (info, table->lcl_head->prev_line))) | |
1542 | { | |
1543 | /* Abnormal but easy: lcl_head is the head of 'info'. */ | |
1544 | info->prev_line = table->lcl_head->prev_line; | |
1545 | table->lcl_head->prev_line = info; | |
1546 | } | |
1547 | else | |
1548 | { | |
0ee19663 NC |
1549 | /* Abnormal and hard: Neither 'last_line' nor 'lcl_head' |
1550 | are valid heads for 'info'. Reset 'lcl_head'. */ | |
1551 | struct line_info* li2 = seq->last_line; /* Always non-NULL. */ | |
d8d1c398 | 1552 | struct line_info* li1 = li2->prev_line; |
e82ce529 | 1553 | |
d8d1c398 AM |
1554 | while (li1) |
1555 | { | |
1556 | if (!new_line_sorts_after (info, li2) | |
1557 | && new_line_sorts_after (info, li1)) | |
1558 | break; | |
e82ce529 | 1559 | |
709d67f1 | 1560 | li2 = li1; /* always non-NULL */ |
d8d1c398 AM |
1561 | li1 = li1->prev_line; |
1562 | } | |
1563 | table->lcl_head = li2; | |
1564 | info->prev_line = table->lcl_head->prev_line; | |
1565 | table->lcl_head->prev_line = info; | |
0ee19663 | 1566 | if (address < seq->low_pc) |
93ee1e36 | 1567 | seq->low_pc = address; |
d8d1c398 | 1568 | } |
8af6b354 | 1569 | return TRUE; |
252b5132 RH |
1570 | } |
1571 | ||
5ed6aba4 | 1572 | /* Extract a fully qualified filename from a line info table. |
af3ef9fe NC |
1573 | The returned string has been malloc'ed and it is the caller's |
1574 | responsibility to free it. */ | |
5ed6aba4 | 1575 | |
a092b084 | 1576 | static char * |
818a27ac | 1577 | concat_filename (struct line_info_table *table, unsigned int file) |
252b5132 | 1578 | { |
f075ee0c | 1579 | char *filename; |
159002ff | 1580 | |
6327533b | 1581 | if (table == NULL || file - 1 >= table->num_files) |
159002ff | 1582 | { |
75a657ba L |
1583 | /* FILE == 0 means unknown. */ |
1584 | if (file) | |
4eca0228 | 1585 | _bfd_error_handler |
9793eb77 | 1586 | (_("DWARF error: mangled line number section (bad file number)")); |
af3ef9fe | 1587 | return strdup ("<unknown>"); |
159002ff RH |
1588 | } |
1589 | ||
1590 | filename = table->files[file - 1].name; | |
a54018b7 AM |
1591 | if (filename == NULL) |
1592 | return strdup ("<unknown>"); | |
5ed6aba4 | 1593 | |
7421a730 | 1594 | if (!IS_ABSOLUTE_PATH (filename)) |
252b5132 | 1595 | { |
608fa8d3 JB |
1596 | char *dir_name = NULL; |
1597 | char *subdir_name = NULL; | |
7421a730 AM |
1598 | char *name; |
1599 | size_t len; | |
0dafd5f6 | 1600 | |
877a8638 | 1601 | if (table->files[file - 1].dir |
dbb3fbbb NC |
1602 | /* PR 17512: file: 0317e960. */ |
1603 | && table->files[file - 1].dir <= table->num_dirs | |
877a8638 NC |
1604 | /* PR 17512: file: 7f3d2e4b. */ |
1605 | && table->dirs != NULL) | |
608fa8d3 | 1606 | subdir_name = table->dirs[table->files[file - 1].dir - 1]; |
7421a730 | 1607 | |
608fa8d3 JB |
1608 | if (!subdir_name || !IS_ABSOLUTE_PATH (subdir_name)) |
1609 | dir_name = table->comp_dir; | |
7421a730 | 1610 | |
608fa8d3 | 1611 | if (!dir_name) |
af3ef9fe | 1612 | { |
608fa8d3 JB |
1613 | dir_name = subdir_name; |
1614 | subdir_name = NULL; | |
7421a730 | 1615 | } |
af3ef9fe | 1616 | |
608fa8d3 | 1617 | if (!dir_name) |
7421a730 AM |
1618 | return strdup (filename); |
1619 | ||
608fa8d3 | 1620 | len = strlen (dir_name) + strlen (filename) + 2; |
7421a730 | 1621 | |
608fa8d3 | 1622 | if (subdir_name) |
7421a730 | 1623 | { |
608fa8d3 | 1624 | len += strlen (subdir_name) + 1; |
a50b1753 | 1625 | name = (char *) bfd_malloc (len); |
7421a730 | 1626 | if (name) |
608fa8d3 | 1627 | sprintf (name, "%s/%s/%s", dir_name, subdir_name, filename); |
7421a730 AM |
1628 | } |
1629 | else | |
1630 | { | |
a50b1753 | 1631 | name = (char *) bfd_malloc (len); |
af3ef9fe | 1632 | if (name) |
608fa8d3 | 1633 | sprintf (name, "%s/%s", dir_name, filename); |
af3ef9fe | 1634 | } |
7421a730 AM |
1635 | |
1636 | return name; | |
252b5132 | 1637 | } |
af3ef9fe NC |
1638 | |
1639 | return strdup (filename); | |
252b5132 RH |
1640 | } |
1641 | ||
8af6b354 | 1642 | static bfd_boolean |
a2a50954 | 1643 | arange_add (const struct comp_unit *unit, struct arange *first_arange, |
8af6b354 | 1644 | bfd_vma low_pc, bfd_vma high_pc) |
f623be2b RH |
1645 | { |
1646 | struct arange *arange; | |
1647 | ||
a2a50954 AM |
1648 | /* Ignore empty ranges. */ |
1649 | if (low_pc == high_pc) | |
1650 | return TRUE; | |
1651 | ||
1652 | /* If the first arange is empty, use it. */ | |
a13afe8e FF |
1653 | if (first_arange->high == 0) |
1654 | { | |
1655 | first_arange->low = low_pc; | |
1656 | first_arange->high = high_pc; | |
8af6b354 | 1657 | return TRUE; |
a13afe8e | 1658 | } |
98591c73 | 1659 | |
a13afe8e FF |
1660 | /* Next see if we can cheaply extend an existing range. */ |
1661 | arange = first_arange; | |
f623be2b RH |
1662 | do |
1663 | { | |
1664 | if (low_pc == arange->high) | |
1665 | { | |
1666 | arange->high = high_pc; | |
8af6b354 | 1667 | return TRUE; |
f623be2b RH |
1668 | } |
1669 | if (high_pc == arange->low) | |
1670 | { | |
1671 | arange->low = low_pc; | |
8af6b354 | 1672 | return TRUE; |
f623be2b RH |
1673 | } |
1674 | arange = arange->next; | |
1675 | } | |
1676 | while (arange); | |
1677 | ||
a13afe8e | 1678 | /* Need to allocate a new arange and insert it into the arange list. |
089e3718 | 1679 | Order isn't significant, so just insert after the first arange. */ |
a2a50954 | 1680 | arange = (struct arange *) bfd_alloc (unit->abfd, sizeof (*arange)); |
8af6b354 AM |
1681 | if (arange == NULL) |
1682 | return FALSE; | |
f623be2b RH |
1683 | arange->low = low_pc; |
1684 | arange->high = high_pc; | |
a13afe8e FF |
1685 | arange->next = first_arange->next; |
1686 | first_arange->next = arange; | |
8af6b354 | 1687 | return TRUE; |
f623be2b RH |
1688 | } |
1689 | ||
0ee19663 NC |
1690 | /* Compare function for line sequences. */ |
1691 | ||
1692 | static int | |
1693 | compare_sequences (const void* a, const void* b) | |
1694 | { | |
1695 | const struct line_sequence* seq1 = a; | |
1696 | const struct line_sequence* seq2 = b; | |
1697 | ||
1698 | /* Sort by low_pc as the primary key. */ | |
1699 | if (seq1->low_pc < seq2->low_pc) | |
1700 | return -1; | |
1701 | if (seq1->low_pc > seq2->low_pc) | |
1702 | return 1; | |
1703 | ||
1704 | /* If low_pc values are equal, sort in reverse order of | |
1705 | high_pc, so that the largest region comes first. */ | |
1706 | if (seq1->last_line->address < seq2->last_line->address) | |
1707 | return 1; | |
1708 | if (seq1->last_line->address > seq2->last_line->address) | |
1709 | return -1; | |
1710 | ||
a233b20c JJ |
1711 | if (seq1->last_line->op_index < seq2->last_line->op_index) |
1712 | return 1; | |
1713 | if (seq1->last_line->op_index > seq2->last_line->op_index) | |
1714 | return -1; | |
1715 | ||
0ee19663 NC |
1716 | return 0; |
1717 | } | |
1718 | ||
089e3718 IT |
1719 | /* Construct the line information table for quick lookup. */ |
1720 | ||
1721 | static bfd_boolean | |
1722 | build_line_info_table (struct line_info_table * table, | |
1723 | struct line_sequence * seq) | |
1724 | { | |
1725 | bfd_size_type amt; | |
1726 | struct line_info** line_info_lookup; | |
1727 | struct line_info* each_line; | |
1728 | unsigned int num_lines; | |
b6ddcd85 | 1729 | unsigned int line_index; |
089e3718 IT |
1730 | |
1731 | if (seq->line_info_lookup != NULL) | |
1732 | return TRUE; | |
1733 | ||
1734 | /* Count the number of line information entries. We could do this while | |
1735 | scanning the debug information, but some entries may be added via | |
1736 | lcl_head without having a sequence handy to increment the number of | |
1737 | lines. */ | |
1738 | num_lines = 0; | |
1739 | for (each_line = seq->last_line; each_line; each_line = each_line->prev_line) | |
1740 | num_lines++; | |
1741 | ||
1742 | if (num_lines == 0) | |
1743 | return TRUE; | |
1744 | ||
1745 | /* Allocate space for the line information lookup table. */ | |
1746 | amt = sizeof (struct line_info*) * num_lines; | |
1747 | line_info_lookup = (struct line_info**) bfd_alloc (table->abfd, amt); | |
1748 | if (line_info_lookup == NULL) | |
1749 | return FALSE; | |
1750 | ||
1751 | /* Create the line information lookup table. */ | |
b6ddcd85 | 1752 | line_index = num_lines; |
089e3718 | 1753 | for (each_line = seq->last_line; each_line; each_line = each_line->prev_line) |
b6ddcd85 | 1754 | line_info_lookup[--line_index] = each_line; |
089e3718 | 1755 | |
b6ddcd85 | 1756 | BFD_ASSERT (line_index == 0); |
089e3718 IT |
1757 | |
1758 | seq->num_lines = num_lines; | |
1759 | seq->line_info_lookup = line_info_lookup; | |
1760 | ||
1761 | return TRUE; | |
1762 | } | |
1763 | ||
0ee19663 NC |
1764 | /* Sort the line sequences for quick lookup. */ |
1765 | ||
8af6b354 | 1766 | static bfd_boolean |
0ee19663 NC |
1767 | sort_line_sequences (struct line_info_table* table) |
1768 | { | |
07d6d2b8 AM |
1769 | bfd_size_type amt; |
1770 | struct line_sequence* sequences; | |
1771 | struct line_sequence* seq; | |
1772 | unsigned int n = 0; | |
1773 | unsigned int num_sequences = table->num_sequences; | |
1774 | bfd_vma last_high_pc; | |
0ee19663 NC |
1775 | |
1776 | if (num_sequences == 0) | |
8af6b354 | 1777 | return TRUE; |
0ee19663 NC |
1778 | |
1779 | /* Allocate space for an array of sequences. */ | |
1780 | amt = sizeof (struct line_sequence) * num_sequences; | |
1781 | sequences = (struct line_sequence *) bfd_alloc (table->abfd, amt); | |
8af6b354 AM |
1782 | if (sequences == NULL) |
1783 | return FALSE; | |
0ee19663 NC |
1784 | |
1785 | /* Copy the linked list into the array, freeing the original nodes. */ | |
1786 | seq = table->sequences; | |
1787 | for (n = 0; n < num_sequences; n++) | |
1788 | { | |
1789 | struct line_sequence* last_seq = seq; | |
1790 | ||
1791 | BFD_ASSERT (seq); | |
1792 | sequences[n].low_pc = seq->low_pc; | |
1793 | sequences[n].prev_sequence = NULL; | |
1794 | sequences[n].last_line = seq->last_line; | |
089e3718 IT |
1795 | sequences[n].line_info_lookup = NULL; |
1796 | sequences[n].num_lines = 0; | |
0ee19663 NC |
1797 | seq = seq->prev_sequence; |
1798 | free (last_seq); | |
1799 | } | |
1800 | BFD_ASSERT (seq == NULL); | |
1801 | ||
1802 | qsort (sequences, n, sizeof (struct line_sequence), compare_sequences); | |
1803 | ||
1804 | /* Make the list binary-searchable by trimming overlapping entries | |
1805 | and removing nested entries. */ | |
1806 | num_sequences = 1; | |
1807 | last_high_pc = sequences[0].last_line->address; | |
1808 | for (n = 1; n < table->num_sequences; n++) | |
1809 | { | |
1810 | if (sequences[n].low_pc < last_high_pc) | |
93ee1e36 | 1811 | { |
0ee19663 NC |
1812 | if (sequences[n].last_line->address <= last_high_pc) |
1813 | /* Skip nested entries. */ | |
1814 | continue; | |
1815 | ||
1816 | /* Trim overlapping entries. */ | |
1817 | sequences[n].low_pc = last_high_pc; | |
93ee1e36 | 1818 | } |
0ee19663 NC |
1819 | last_high_pc = sequences[n].last_line->address; |
1820 | if (n > num_sequences) | |
93ee1e36 AM |
1821 | { |
1822 | /* Close up the gap. */ | |
1823 | sequences[num_sequences].low_pc = sequences[n].low_pc; | |
1824 | sequences[num_sequences].last_line = sequences[n].last_line; | |
1825 | } | |
0ee19663 NC |
1826 | num_sequences++; |
1827 | } | |
1828 | ||
1829 | table->sequences = sequences; | |
1830 | table->num_sequences = num_sequences; | |
8af6b354 | 1831 | return TRUE; |
0ee19663 NC |
1832 | } |
1833 | ||
0041f7df JK |
1834 | /* Add directory to TABLE. CUR_DIR memory ownership is taken by TABLE. */ |
1835 | ||
1836 | static bfd_boolean | |
1837 | line_info_add_include_dir (struct line_info_table *table, char *cur_dir) | |
1838 | { | |
1839 | if ((table->num_dirs % DIR_ALLOC_CHUNK) == 0) | |
1840 | { | |
1841 | char **tmp; | |
1842 | bfd_size_type amt; | |
1843 | ||
1844 | amt = table->num_dirs + DIR_ALLOC_CHUNK; | |
1845 | amt *= sizeof (char *); | |
1846 | ||
1847 | tmp = (char **) bfd_realloc (table->dirs, amt); | |
1848 | if (tmp == NULL) | |
1849 | return FALSE; | |
1850 | table->dirs = tmp; | |
1851 | } | |
1852 | ||
1853 | table->dirs[table->num_dirs++] = cur_dir; | |
1854 | return TRUE; | |
1855 | } | |
1856 | ||
1857 | static bfd_boolean | |
1858 | line_info_add_include_dir_stub (struct line_info_table *table, char *cur_dir, | |
1859 | unsigned int dir ATTRIBUTE_UNUSED, | |
1d827a72 | 1860 | unsigned int xtime ATTRIBUTE_UNUSED, |
0041f7df JK |
1861 | unsigned int size ATTRIBUTE_UNUSED) |
1862 | { | |
1863 | return line_info_add_include_dir (table, cur_dir); | |
1864 | } | |
1865 | ||
1866 | /* Add file to TABLE. CUR_FILE memory ownership is taken by TABLE. */ | |
1867 | ||
1868 | static bfd_boolean | |
1869 | line_info_add_file_name (struct line_info_table *table, char *cur_file, | |
1d827a72 L |
1870 | unsigned int dir, unsigned int xtime, |
1871 | unsigned int size) | |
0041f7df JK |
1872 | { |
1873 | if ((table->num_files % FILE_ALLOC_CHUNK) == 0) | |
1874 | { | |
1875 | struct fileinfo *tmp; | |
1876 | bfd_size_type amt; | |
1877 | ||
1878 | amt = table->num_files + FILE_ALLOC_CHUNK; | |
1879 | amt *= sizeof (struct fileinfo); | |
1880 | ||
1881 | tmp = (struct fileinfo *) bfd_realloc (table->files, amt); | |
1882 | if (tmp == NULL) | |
1883 | return FALSE; | |
1884 | table->files = tmp; | |
1885 | } | |
1886 | ||
1887 | table->files[table->num_files].name = cur_file; | |
1888 | table->files[table->num_files].dir = dir; | |
1d827a72 | 1889 | table->files[table->num_files].time = xtime; |
0041f7df JK |
1890 | table->files[table->num_files].size = size; |
1891 | table->num_files++; | |
1892 | return TRUE; | |
1893 | } | |
1894 | ||
1895 | /* Read directory or file name entry format, starting with byte of | |
1896 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
1897 | entries count and the entries themselves in the described entry | |
1898 | format. */ | |
1899 | ||
1900 | static bfd_boolean | |
1901 | read_formatted_entries (struct comp_unit *unit, bfd_byte **bufp, | |
1902 | bfd_byte *buf_end, struct line_info_table *table, | |
1903 | bfd_boolean (*callback) (struct line_info_table *table, | |
1904 | char *cur_file, | |
1905 | unsigned int dir, | |
1906 | unsigned int time, | |
1907 | unsigned int size)) | |
1908 | { | |
1909 | bfd *abfd = unit->abfd; | |
1910 | bfd_byte format_count, formati; | |
1911 | bfd_vma data_count, datai; | |
1912 | bfd_byte *buf = *bufp; | |
1913 | bfd_byte *format_header_data; | |
1914 | unsigned int bytes_read; | |
1915 | ||
1916 | format_count = read_1_byte (abfd, buf, buf_end); | |
1917 | buf += 1; | |
1918 | format_header_data = buf; | |
1919 | for (formati = 0; formati < format_count; formati++) | |
1920 | { | |
1921 | _bfd_safe_read_leb128 (abfd, buf, &bytes_read, FALSE, buf_end); | |
1922 | buf += bytes_read; | |
1923 | _bfd_safe_read_leb128 (abfd, buf, &bytes_read, FALSE, buf_end); | |
1924 | buf += bytes_read; | |
1925 | } | |
1926 | ||
1927 | data_count = _bfd_safe_read_leb128 (abfd, buf, &bytes_read, FALSE, buf_end); | |
1928 | buf += bytes_read; | |
c361faae AM |
1929 | if (format_count == 0 && data_count != 0) |
1930 | { | |
9793eb77 | 1931 | _bfd_error_handler (_("DWARF error: zero format count")); |
c361faae AM |
1932 | bfd_set_error (bfd_error_bad_value); |
1933 | return FALSE; | |
1934 | } | |
1935 | ||
30d0157a NC |
1936 | /* PR 22210. Paranoia check. Don't bother running the loop |
1937 | if we know that we are going to run out of buffer. */ | |
1938 | if (data_count > (bfd_vma) (buf_end - buf)) | |
1939 | { | |
2dcf00ce | 1940 | _bfd_error_handler |
9793eb77 | 1941 | (_("DWARF error: data count (%" PRIx64 ") larger than buffer size"), |
2dcf00ce | 1942 | (uint64_t) data_count); |
30d0157a NC |
1943 | bfd_set_error (bfd_error_bad_value); |
1944 | return FALSE; | |
1945 | } | |
1946 | ||
0041f7df JK |
1947 | for (datai = 0; datai < data_count; datai++) |
1948 | { | |
1949 | bfd_byte *format = format_header_data; | |
1950 | struct fileinfo fe; | |
1951 | ||
a54018b7 | 1952 | memset (&fe, 0, sizeof fe); |
0041f7df JK |
1953 | for (formati = 0; formati < format_count; formati++) |
1954 | { | |
1955 | bfd_vma content_type, form; | |
1956 | char *string_trash; | |
1957 | char **stringp = &string_trash; | |
1958 | unsigned int uint_trash, *uintp = &uint_trash; | |
33e0a9a0 | 1959 | struct attribute attr; |
0041f7df JK |
1960 | |
1961 | content_type = _bfd_safe_read_leb128 (abfd, format, &bytes_read, | |
1962 | FALSE, buf_end); | |
1963 | format += bytes_read; | |
1964 | switch (content_type) | |
1965 | { | |
1966 | case DW_LNCT_path: | |
1967 | stringp = &fe.name; | |
1968 | break; | |
1969 | case DW_LNCT_directory_index: | |
1970 | uintp = &fe.dir; | |
1971 | break; | |
1972 | case DW_LNCT_timestamp: | |
1973 | uintp = &fe.time; | |
1974 | break; | |
1975 | case DW_LNCT_size: | |
1976 | uintp = &fe.size; | |
1977 | break; | |
1978 | case DW_LNCT_MD5: | |
1979 | break; | |
1980 | default: | |
1981 | _bfd_error_handler | |
9793eb77 | 1982 | (_("DWARF error: unknown format content type %" PRIu64), |
2dcf00ce | 1983 | (uint64_t) content_type); |
0041f7df JK |
1984 | bfd_set_error (bfd_error_bad_value); |
1985 | return FALSE; | |
1986 | } | |
1987 | ||
1988 | form = _bfd_safe_read_leb128 (abfd, format, &bytes_read, FALSE, | |
1989 | buf_end); | |
1990 | format += bytes_read; | |
33e0a9a0 AM |
1991 | |
1992 | buf = read_attribute_value (&attr, form, 0, unit, buf, buf_end); | |
1993 | if (buf == NULL) | |
1994 | return FALSE; | |
0041f7df JK |
1995 | switch (form) |
1996 | { | |
1997 | case DW_FORM_string: | |
0041f7df | 1998 | case DW_FORM_line_strp: |
33e0a9a0 | 1999 | *stringp = attr.u.str; |
0041f7df JK |
2000 | break; |
2001 | ||
2002 | case DW_FORM_data1: | |
0041f7df | 2003 | case DW_FORM_data2: |
0041f7df | 2004 | case DW_FORM_data4: |
0041f7df | 2005 | case DW_FORM_data8: |
0041f7df | 2006 | case DW_FORM_udata: |
33e0a9a0 | 2007 | *uintp = attr.u.val; |
0041f7df JK |
2008 | break; |
2009 | } | |
2010 | } | |
2011 | ||
2012 | if (!callback (table, fe.name, fe.dir, fe.time, fe.size)) | |
2013 | return FALSE; | |
2014 | } | |
2015 | ||
2016 | *bufp = buf; | |
2017 | return TRUE; | |
2018 | } | |
2019 | ||
34b5e0b2 | 2020 | /* Decode the line number information for UNIT. */ |
252b5132 | 2021 | |
34b5e0b2 | 2022 | static struct line_info_table* |
818a27ac | 2023 | decode_line_info (struct comp_unit *unit, struct dwarf2_debug *stash) |
252b5132 RH |
2024 | { |
2025 | bfd *abfd = unit->abfd; | |
252b5132 | 2026 | struct line_info_table* table; |
f075ee0c AM |
2027 | bfd_byte *line_ptr; |
2028 | bfd_byte *line_end; | |
252b5132 | 2029 | struct line_head lh; |
d03ba2a1 | 2030 | unsigned int i, bytes_read, offset_size; |
252b5132 RH |
2031 | char *cur_file, *cur_dir; |
2032 | unsigned char op_code, extended_op, adj_opcode; | |
fec16237 | 2033 | unsigned int exop_len; |
dc810e39 | 2034 | bfd_size_type amt; |
252b5132 | 2035 | |
fc28f9aa | 2036 | if (! read_section (abfd, &stash->debug_sections[debug_line], |
93ee1e36 | 2037 | stash->syms, unit->line_offset, |
9e32b19f | 2038 | &stash->dwarf_line_buffer, &stash->dwarf_line_size)) |
8af6b354 | 2039 | return NULL; |
ccdb16fc | 2040 | |
dc810e39 | 2041 | amt = sizeof (struct line_info_table); |
a50b1753 | 2042 | table = (struct line_info_table *) bfd_alloc (abfd, amt); |
8af6b354 AM |
2043 | if (table == NULL) |
2044 | return NULL; | |
252b5132 RH |
2045 | table->abfd = abfd; |
2046 | table->comp_dir = unit->comp_dir; | |
2047 | ||
2048 | table->num_files = 0; | |
2049 | table->files = NULL; | |
2050 | ||
2051 | table->num_dirs = 0; | |
2052 | table->dirs = NULL; | |
2053 | ||
0ee19663 NC |
2054 | table->num_sequences = 0; |
2055 | table->sequences = NULL; | |
2056 | ||
e82ce529 | 2057 | table->lcl_head = NULL; |
159002ff | 2058 | |
dbb3fbbb NC |
2059 | if (stash->dwarf_line_size < 16) |
2060 | { | |
4eca0228 | 2061 | _bfd_error_handler |
9793eb77 | 2062 | (_("DWARF error: line info section is too small (%" PRId64 ")"), |
2dcf00ce | 2063 | (int64_t) stash->dwarf_line_size); |
dbb3fbbb NC |
2064 | bfd_set_error (bfd_error_bad_value); |
2065 | return NULL; | |
2066 | } | |
69dd2e2d | 2067 | line_ptr = stash->dwarf_line_buffer + unit->line_offset; |
dbb3fbbb | 2068 | line_end = stash->dwarf_line_buffer + stash->dwarf_line_size; |
252b5132 | 2069 | |
a092b084 | 2070 | /* Read in the prologue. */ |
dbb3fbbb | 2071 | lh.total_length = read_4_bytes (abfd, line_ptr, line_end); |
91a4d569 AM |
2072 | line_ptr += 4; |
2073 | offset_size = 4; | |
2074 | if (lh.total_length == 0xffffffff) | |
dae2dd0d | 2075 | { |
dbb3fbbb | 2076 | lh.total_length = read_8_bytes (abfd, line_ptr, line_end); |
dae2dd0d NC |
2077 | line_ptr += 8; |
2078 | offset_size = 8; | |
2079 | } | |
91a4d569 | 2080 | else if (lh.total_length == 0 && unit->addr_size == 8) |
d03ba2a1 | 2081 | { |
91a4d569 | 2082 | /* Handle (non-standard) 64-bit DWARF2 formats. */ |
dbb3fbbb | 2083 | lh.total_length = read_4_bytes (abfd, line_ptr, line_end); |
91a4d569 | 2084 | line_ptr += 4; |
d03ba2a1 JJ |
2085 | offset_size = 8; |
2086 | } | |
dbb3fbbb | 2087 | |
515f23e6 | 2088 | if (lh.total_length > (size_t) (line_end - line_ptr)) |
dbb3fbbb | 2089 | { |
4eca0228 | 2090 | _bfd_error_handler |
695344c0 | 2091 | /* xgettext: c-format */ |
9793eb77 | 2092 | (_("DWARF error: line info data is bigger (%#" PRIx64 ")" |
515f23e6 | 2093 | " than the space remaining in the section (%#lx)"), |
2dcf00ce | 2094 | (uint64_t) lh.total_length, (unsigned long) (line_end - line_ptr)); |
dbb3fbbb NC |
2095 | bfd_set_error (bfd_error_bad_value); |
2096 | return NULL; | |
2097 | } | |
62f8d217 | 2098 | |
252b5132 | 2099 | line_end = line_ptr + lh.total_length; |
62f8d217 | 2100 | |
dbb3fbbb | 2101 | lh.version = read_2_bytes (abfd, line_ptr, line_end); |
0041f7df | 2102 | if (lh.version < 2 || lh.version > 5) |
a233b20c | 2103 | { |
4eca0228 | 2104 | _bfd_error_handler |
9793eb77 | 2105 | (_("DWARF error: unhandled .debug_line version %d"), lh.version); |
a233b20c JJ |
2106 | bfd_set_error (bfd_error_bad_value); |
2107 | return NULL; | |
2108 | } | |
252b5132 | 2109 | line_ptr += 2; |
dbb3fbbb | 2110 | |
0041f7df JK |
2111 | if (line_ptr + offset_size + (lh.version >= 5 ? 8 : (lh.version >= 4 ? 6 : 5)) |
2112 | >= line_end) | |
dbb3fbbb | 2113 | { |
4eca0228 | 2114 | _bfd_error_handler |
9793eb77 | 2115 | (_("DWARF error: ran out of room reading prologue")); |
dbb3fbbb NC |
2116 | bfd_set_error (bfd_error_bad_value); |
2117 | return NULL; | |
2118 | } | |
2119 | ||
0041f7df JK |
2120 | if (lh.version >= 5) |
2121 | { | |
2122 | unsigned int segment_selector_size; | |
2123 | ||
2124 | /* Skip address size. */ | |
2125 | read_1_byte (abfd, line_ptr, line_end); | |
2126 | line_ptr += 1; | |
2127 | ||
2128 | segment_selector_size = read_1_byte (abfd, line_ptr, line_end); | |
2129 | line_ptr += 1; | |
2130 | if (segment_selector_size != 0) | |
2131 | { | |
2132 | _bfd_error_handler | |
9793eb77 | 2133 | (_("DWARF error: line info unsupported segment selector size %u"), |
0041f7df JK |
2134 | segment_selector_size); |
2135 | bfd_set_error (bfd_error_bad_value); | |
2136 | return NULL; | |
2137 | } | |
2138 | } | |
2139 | ||
d03ba2a1 | 2140 | if (offset_size == 4) |
dbb3fbbb | 2141 | lh.prologue_length = read_4_bytes (abfd, line_ptr, line_end); |
d03ba2a1 | 2142 | else |
dbb3fbbb | 2143 | lh.prologue_length = read_8_bytes (abfd, line_ptr, line_end); |
d03ba2a1 | 2144 | line_ptr += offset_size; |
dbb3fbbb NC |
2145 | |
2146 | lh.minimum_instruction_length = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2147 | line_ptr += 1; |
dbb3fbbb | 2148 | |
a233b20c JJ |
2149 | if (lh.version >= 4) |
2150 | { | |
dbb3fbbb | 2151 | lh.maximum_ops_per_insn = read_1_byte (abfd, line_ptr, line_end); |
a233b20c JJ |
2152 | line_ptr += 1; |
2153 | } | |
2154 | else | |
2155 | lh.maximum_ops_per_insn = 1; | |
dbb3fbbb | 2156 | |
a233b20c JJ |
2157 | if (lh.maximum_ops_per_insn == 0) |
2158 | { | |
4eca0228 | 2159 | _bfd_error_handler |
9793eb77 | 2160 | (_("DWARF error: invalid maximum operations per instruction")); |
a233b20c JJ |
2161 | bfd_set_error (bfd_error_bad_value); |
2162 | return NULL; | |
2163 | } | |
dbb3fbbb NC |
2164 | |
2165 | lh.default_is_stmt = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2166 | line_ptr += 1; |
dbb3fbbb NC |
2167 | |
2168 | lh.line_base = read_1_signed_byte (abfd, line_ptr, line_end); | |
252b5132 | 2169 | line_ptr += 1; |
dbb3fbbb NC |
2170 | |
2171 | lh.line_range = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2172 | line_ptr += 1; |
dbb3fbbb NC |
2173 | |
2174 | lh.opcode_base = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2175 | line_ptr += 1; |
dbb3fbbb NC |
2176 | |
2177 | if (line_ptr + (lh.opcode_base - 1) >= line_end) | |
2178 | { | |
9793eb77 | 2179 | _bfd_error_handler (_("DWARF error: ran out of room reading opcodes")); |
dbb3fbbb NC |
2180 | bfd_set_error (bfd_error_bad_value); |
2181 | return NULL; | |
2182 | } | |
62f8d217 | 2183 | |
dc810e39 | 2184 | amt = lh.opcode_base * sizeof (unsigned char); |
a50b1753 | 2185 | lh.standard_opcode_lengths = (unsigned char *) bfd_alloc (abfd, amt); |
252b5132 RH |
2186 | |
2187 | lh.standard_opcode_lengths[0] = 1; | |
98591c73 | 2188 | |
252b5132 RH |
2189 | for (i = 1; i < lh.opcode_base; ++i) |
2190 | { | |
dbb3fbbb | 2191 | lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr, line_end); |
252b5132 RH |
2192 | line_ptr += 1; |
2193 | } | |
2194 | ||
0041f7df | 2195 | if (lh.version >= 5) |
252b5132 | 2196 | { |
0041f7df JK |
2197 | /* Read directory table. */ |
2198 | if (!read_formatted_entries (unit, &line_ptr, line_end, table, | |
2199 | line_info_add_include_dir_stub)) | |
2200 | goto fail; | |
98591c73 | 2201 | |
0041f7df JK |
2202 | /* Read file name table. */ |
2203 | if (!read_formatted_entries (unit, &line_ptr, line_end, table, | |
2204 | line_info_add_file_name)) | |
2205 | goto fail; | |
2206 | } | |
2207 | else | |
2208 | { | |
2209 | /* Read directory table. */ | |
2210 | while ((cur_dir = read_string (abfd, line_ptr, line_end, &bytes_read)) != NULL) | |
252b5132 | 2211 | { |
0041f7df | 2212 | line_ptr += bytes_read; |
35330cce | 2213 | |
0041f7df | 2214 | if (!line_info_add_include_dir (table, cur_dir)) |
8af6b354 | 2215 | goto fail; |
252b5132 | 2216 | } |
98591c73 | 2217 | |
252b5132 | 2218 | line_ptr += bytes_read; |
98591c73 | 2219 | |
0041f7df JK |
2220 | /* Read file name table. */ |
2221 | while ((cur_file = read_string (abfd, line_ptr, line_end, &bytes_read)) != NULL) | |
252b5132 | 2222 | { |
1d827a72 | 2223 | unsigned int dir, xtime, size; |
0041f7df JK |
2224 | |
2225 | line_ptr += bytes_read; | |
35330cce | 2226 | |
0041f7df JK |
2227 | dir = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, FALSE, line_end); |
2228 | line_ptr += bytes_read; | |
1d827a72 | 2229 | xtime = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, FALSE, line_end); |
0041f7df JK |
2230 | line_ptr += bytes_read; |
2231 | size = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, FALSE, line_end); | |
2232 | line_ptr += bytes_read; | |
35330cce | 2233 | |
1d827a72 | 2234 | if (!line_info_add_file_name (table, cur_file, dir, xtime, size)) |
8af6b354 | 2235 | goto fail; |
252b5132 | 2236 | } |
98591c73 | 2237 | |
252b5132 | 2238 | line_ptr += bytes_read; |
252b5132 | 2239 | } |
98591c73 | 2240 | |
252b5132 RH |
2241 | /* Read the statement sequences until there's nothing left. */ |
2242 | while (line_ptr < line_end) | |
2243 | { | |
a092b084 | 2244 | /* State machine registers. */ |
252b5132 | 2245 | bfd_vma address = 0; |
a233b20c | 2246 | unsigned char op_index = 0; |
8bfd78b3 | 2247 | char * filename = table->num_files ? concat_filename (table, 1) : NULL; |
252b5132 RH |
2248 | unsigned int line = 1; |
2249 | unsigned int column = 0; | |
9b8d1a36 | 2250 | unsigned int discriminator = 0; |
252b5132 | 2251 | int is_stmt = lh.default_is_stmt; |
e2f6d277 | 2252 | int end_sequence = 0; |
a54018b7 | 2253 | unsigned int dir, xtime, size; |
e2f6d277 | 2254 | /* eraxxon@alumni.rice.edu: Against the DWARF2 specs, some |
e82ce529 AM |
2255 | compilers generate address sequences that are wildly out of |
2256 | order using DW_LNE_set_address (e.g. Intel C++ 6.0 compiler | |
2257 | for ia64-Linux). Thus, to determine the low and high | |
2258 | address, we must compare on every DW_LNS_copy, etc. */ | |
75758e9d | 2259 | bfd_vma low_pc = (bfd_vma) -1; |
e2f6d277 | 2260 | bfd_vma high_pc = 0; |
252b5132 | 2261 | |
a092b084 | 2262 | /* Decode the table. */ |
e338894d | 2263 | while (!end_sequence && line_ptr < line_end) |
252b5132 | 2264 | { |
dbb3fbbb | 2265 | op_code = read_1_byte (abfd, line_ptr, line_end); |
252b5132 | 2266 | line_ptr += 1; |
98591c73 | 2267 | |
1a509dcc | 2268 | if (op_code >= lh.opcode_base) |
e2f6d277 NC |
2269 | { |
2270 | /* Special operand. */ | |
1a509dcc | 2271 | adj_opcode = op_code - lh.opcode_base; |
dbb3fbbb NC |
2272 | if (lh.line_range == 0) |
2273 | goto line_fail; | |
a233b20c | 2274 | if (lh.maximum_ops_per_insn == 1) |
a2a50954 AM |
2275 | address += (adj_opcode / lh.line_range |
2276 | * lh.minimum_instruction_length); | |
a233b20c JJ |
2277 | else |
2278 | { | |
a2a50954 AM |
2279 | address += ((op_index + adj_opcode / lh.line_range) |
2280 | / lh.maximum_ops_per_insn | |
2281 | * lh.minimum_instruction_length); | |
2282 | op_index = ((op_index + adj_opcode / lh.line_range) | |
2283 | % lh.maximum_ops_per_insn); | |
a233b20c | 2284 | } |
1a509dcc GK |
2285 | line += lh.line_base + (adj_opcode % lh.line_range); |
2286 | /* Append row to matrix using current values. */ | |
a233b20c | 2287 | if (!add_line_info (table, address, op_index, filename, |
9b8d1a36 | 2288 | line, column, discriminator, 0)) |
8af6b354 | 2289 | goto line_fail; |
93ee1e36 | 2290 | discriminator = 0; |
75758e9d AM |
2291 | if (address < low_pc) |
2292 | low_pc = address; | |
e2f6d277 NC |
2293 | if (address > high_pc) |
2294 | high_pc = address; | |
1a509dcc GK |
2295 | } |
2296 | else switch (op_code) | |
252b5132 RH |
2297 | { |
2298 | case DW_LNS_extended_op: | |
4265548c PA |
2299 | exop_len = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2300 | FALSE, line_end); | |
fec16237 | 2301 | line_ptr += bytes_read; |
dbb3fbbb | 2302 | extended_op = read_1_byte (abfd, line_ptr, line_end); |
252b5132 | 2303 | line_ptr += 1; |
e2f6d277 | 2304 | |
252b5132 RH |
2305 | switch (extended_op) |
2306 | { | |
2307 | case DW_LNE_end_sequence: | |
2308 | end_sequence = 1; | |
9b8d1a36 CC |
2309 | if (!add_line_info (table, address, op_index, filename, line, |
2310 | column, discriminator, end_sequence)) | |
8af6b354 | 2311 | goto line_fail; |
93ee1e36 | 2312 | discriminator = 0; |
75758e9d AM |
2313 | if (address < low_pc) |
2314 | low_pc = address; | |
e2f6d277 NC |
2315 | if (address > high_pc) |
2316 | high_pc = address; | |
a2a50954 | 2317 | if (!arange_add (unit, &unit->arange, low_pc, high_pc)) |
8af6b354 | 2318 | goto line_fail; |
252b5132 RH |
2319 | break; |
2320 | case DW_LNE_set_address: | |
dbb3fbbb | 2321 | address = read_address (unit, line_ptr, line_end); |
a233b20c | 2322 | op_index = 0; |
252b5132 RH |
2323 | line_ptr += unit->addr_size; |
2324 | break; | |
2325 | case DW_LNE_define_file: | |
dbb3fbbb | 2326 | cur_file = read_string (abfd, line_ptr, line_end, &bytes_read); |
252b5132 | 2327 | line_ptr += bytes_read; |
a54018b7 AM |
2328 | dir = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2329 | FALSE, line_end); | |
252b5132 | 2330 | line_ptr += bytes_read; |
a54018b7 AM |
2331 | xtime = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2332 | FALSE, line_end); | |
252b5132 | 2333 | line_ptr += bytes_read; |
a54018b7 AM |
2334 | size = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2335 | FALSE, line_end); | |
252b5132 | 2336 | line_ptr += bytes_read; |
a54018b7 AM |
2337 | if (!line_info_add_file_name (table, cur_file, dir, |
2338 | xtime, size)) | |
2339 | goto line_fail; | |
252b5132 | 2340 | break; |
9e1f7c0e | 2341 | case DW_LNE_set_discriminator: |
9b8d1a36 | 2342 | discriminator = |
4265548c PA |
2343 | _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2344 | FALSE, line_end); | |
9e1f7c0e DK |
2345 | line_ptr += bytes_read; |
2346 | break; | |
a2a50954 AM |
2347 | case DW_LNE_HP_source_file_correlation: |
2348 | line_ptr += exop_len - 1; | |
2349 | break; | |
252b5132 | 2350 | default: |
4eca0228 | 2351 | _bfd_error_handler |
9793eb77 | 2352 | (_("DWARF error: mangled line number section")); |
252b5132 | 2353 | bfd_set_error (bfd_error_bad_value); |
8af6b354 AM |
2354 | line_fail: |
2355 | if (filename != NULL) | |
2356 | free (filename); | |
2357 | goto fail; | |
252b5132 RH |
2358 | } |
2359 | break; | |
2360 | case DW_LNS_copy: | |
a233b20c | 2361 | if (!add_line_info (table, address, op_index, |
9b8d1a36 | 2362 | filename, line, column, discriminator, 0)) |
8af6b354 | 2363 | goto line_fail; |
93ee1e36 | 2364 | discriminator = 0; |
75758e9d AM |
2365 | if (address < low_pc) |
2366 | low_pc = address; | |
e2f6d277 NC |
2367 | if (address > high_pc) |
2368 | high_pc = address; | |
252b5132 RH |
2369 | break; |
2370 | case DW_LNS_advance_pc: | |
a233b20c | 2371 | if (lh.maximum_ops_per_insn == 1) |
a2a50954 | 2372 | address += (lh.minimum_instruction_length |
4265548c PA |
2373 | * _bfd_safe_read_leb128 (abfd, line_ptr, |
2374 | &bytes_read, | |
2375 | FALSE, line_end)); | |
a233b20c JJ |
2376 | else |
2377 | { | |
4265548c PA |
2378 | bfd_vma adjust = _bfd_safe_read_leb128 (abfd, line_ptr, |
2379 | &bytes_read, | |
2380 | FALSE, line_end); | |
a2a50954 AM |
2381 | address = ((op_index + adjust) / lh.maximum_ops_per_insn |
2382 | * lh.minimum_instruction_length); | |
a233b20c JJ |
2383 | op_index = (op_index + adjust) % lh.maximum_ops_per_insn; |
2384 | } | |
252b5132 RH |
2385 | line_ptr += bytes_read; |
2386 | break; | |
2387 | case DW_LNS_advance_line: | |
4265548c PA |
2388 | line += _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2389 | TRUE, line_end); | |
252b5132 RH |
2390 | line_ptr += bytes_read; |
2391 | break; | |
2392 | case DW_LNS_set_file: | |
2393 | { | |
2394 | unsigned int file; | |
2395 | ||
e2f6d277 NC |
2396 | /* The file and directory tables are 0 |
2397 | based, the references are 1 based. */ | |
4265548c PA |
2398 | file = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2399 | FALSE, line_end); | |
252b5132 | 2400 | line_ptr += bytes_read; |
af3ef9fe NC |
2401 | if (filename) |
2402 | free (filename); | |
252b5132 RH |
2403 | filename = concat_filename (table, file); |
2404 | break; | |
2405 | } | |
2406 | case DW_LNS_set_column: | |
4265548c PA |
2407 | column = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2408 | FALSE, line_end); | |
252b5132 RH |
2409 | line_ptr += bytes_read; |
2410 | break; | |
2411 | case DW_LNS_negate_stmt: | |
2412 | is_stmt = (!is_stmt); | |
2413 | break; | |
2414 | case DW_LNS_set_basic_block: | |
252b5132 RH |
2415 | break; |
2416 | case DW_LNS_const_add_pc: | |
d8010d3e AM |
2417 | if (lh.line_range == 0) |
2418 | goto line_fail; | |
a233b20c | 2419 | if (lh.maximum_ops_per_insn == 1) |
a2a50954 AM |
2420 | address += (lh.minimum_instruction_length |
2421 | * ((255 - lh.opcode_base) / lh.line_range)); | |
a233b20c JJ |
2422 | else |
2423 | { | |
2424 | bfd_vma adjust = ((255 - lh.opcode_base) / lh.line_range); | |
a2a50954 AM |
2425 | address += (lh.minimum_instruction_length |
2426 | * ((op_index + adjust) | |
2427 | / lh.maximum_ops_per_insn)); | |
a233b20c JJ |
2428 | op_index = (op_index + adjust) % lh.maximum_ops_per_insn; |
2429 | } | |
252b5132 RH |
2430 | break; |
2431 | case DW_LNS_fixed_advance_pc: | |
dbb3fbbb | 2432 | address += read_2_bytes (abfd, line_ptr, line_end); |
a233b20c | 2433 | op_index = 0; |
252b5132 RH |
2434 | line_ptr += 2; |
2435 | break; | |
1a509dcc | 2436 | default: |
91d6fa6a NC |
2437 | /* Unknown standard opcode, ignore it. */ |
2438 | for (i = 0; i < lh.standard_opcode_lengths[op_code]; i++) | |
2439 | { | |
4265548c PA |
2440 | (void) _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2441 | FALSE, line_end); | |
91d6fa6a NC |
2442 | line_ptr += bytes_read; |
2443 | } | |
2444 | break; | |
252b5132 RH |
2445 | } |
2446 | } | |
5ed6aba4 | 2447 | |
af3ef9fe NC |
2448 | if (filename) |
2449 | free (filename); | |
252b5132 RH |
2450 | } |
2451 | ||
8af6b354 AM |
2452 | if (sort_line_sequences (table)) |
2453 | return table; | |
0ee19663 | 2454 | |
8af6b354 | 2455 | fail: |
a26a013f AM |
2456 | while (table->sequences != NULL) |
2457 | { | |
2458 | struct line_sequence* seq = table->sequences; | |
2459 | table->sequences = table->sequences->prev_sequence; | |
2460 | free (seq); | |
2461 | } | |
8af6b354 AM |
2462 | if (table->files != NULL) |
2463 | free (table->files); | |
2464 | if (table->dirs != NULL) | |
2465 | free (table->dirs); | |
2466 | return NULL; | |
252b5132 RH |
2467 | } |
2468 | ||
240d6706 NC |
2469 | /* If ADDR is within TABLE set the output parameters and return the |
2470 | range of addresses covered by the entry used to fill them out. | |
2471 | Otherwise set * FILENAME_PTR to NULL and return 0. | |
2472 | The parameters FILENAME_PTR, LINENUMBER_PTR and DISCRIMINATOR_PTR | |
2473 | are pointers to the objects to be filled in. */ | |
252b5132 | 2474 | |
240d6706 | 2475 | static bfd_vma |
818a27ac AM |
2476 | lookup_address_in_line_info_table (struct line_info_table *table, |
2477 | bfd_vma addr, | |
818a27ac | 2478 | const char **filename_ptr, |
9b8d1a36 CC |
2479 | unsigned int *linenumber_ptr, |
2480 | unsigned int *discriminator_ptr) | |
252b5132 | 2481 | { |
0ee19663 | 2482 | struct line_sequence *seq = NULL; |
089e3718 | 2483 | struct line_info *info; |
0ee19663 | 2484 | int low, high, mid; |
e82ce529 | 2485 | |
0ee19663 NC |
2486 | /* Binary search the array of sequences. */ |
2487 | low = 0; | |
2488 | high = table->num_sequences; | |
2489 | while (low < high) | |
2490 | { | |
2491 | mid = (low + high) / 2; | |
2492 | seq = &table->sequences[mid]; | |
2493 | if (addr < seq->low_pc) | |
2494 | high = mid; | |
2495 | else if (addr >= seq->last_line->address) | |
2496 | low = mid + 1; | |
2497 | else | |
2498 | break; | |
2499 | } | |
98591c73 | 2500 | |
089e3718 IT |
2501 | /* Check for a valid sequence. */ |
2502 | if (!seq || addr < seq->low_pc || addr >= seq->last_line->address) | |
2503 | goto fail; | |
2504 | ||
2505 | if (!build_line_info_table (table, seq)) | |
2506 | goto fail; | |
2507 | ||
2508 | /* Binary search the array of line information. */ | |
2509 | low = 0; | |
2510 | high = seq->num_lines; | |
2511 | info = NULL; | |
2512 | while (low < high) | |
1ee24f27 | 2513 | { |
089e3718 IT |
2514 | mid = (low + high) / 2; |
2515 | info = seq->line_info_lookup[mid]; | |
2516 | if (addr < info->address) | |
2517 | high = mid; | |
2518 | else if (addr >= seq->line_info_lookup[mid + 1]->address) | |
2519 | low = mid + 1; | |
2520 | else | |
2521 | break; | |
2522 | } | |
0ee19663 | 2523 | |
089e3718 IT |
2524 | /* Check for a valid line information entry. */ |
2525 | if (info | |
2526 | && addr >= info->address | |
2527 | && addr < seq->line_info_lookup[mid + 1]->address | |
2528 | && !(info->end_sequence || info == seq->last_line)) | |
2529 | { | |
2530 | *filename_ptr = info->filename; | |
2531 | *linenumber_ptr = info->line; | |
2532 | if (discriminator_ptr) | |
2533 | *discriminator_ptr = info->discriminator; | |
2534 | return seq->last_line->address - seq->low_pc; | |
1ee24f27 DJ |
2535 | } |
2536 | ||
089e3718 | 2537 | fail: |
107601c8 | 2538 | *filename_ptr = NULL; |
240d6706 | 2539 | return 0; |
252b5132 | 2540 | } |
98591c73 | 2541 | |
0ee19663 | 2542 | /* Read in the .debug_ranges section for future reference. */ |
a13afe8e FF |
2543 | |
2544 | static bfd_boolean | |
089e3718 | 2545 | read_debug_ranges (struct comp_unit * unit) |
a13afe8e | 2546 | { |
089e3718 IT |
2547 | struct dwarf2_debug * stash = unit->stash; |
2548 | ||
fc28f9aa | 2549 | return read_section (unit->abfd, &stash->debug_sections[debug_ranges], |
93ee1e36 | 2550 | stash->syms, 0, |
089e3718 IT |
2551 | &stash->dwarf_ranges_buffer, |
2552 | &stash->dwarf_ranges_size); | |
a13afe8e FF |
2553 | } |
2554 | ||
a092b084 | 2555 | /* Function table functions. */ |
252b5132 | 2556 | |
089e3718 IT |
2557 | static int |
2558 | compare_lookup_funcinfos (const void * a, const void * b) | |
2559 | { | |
2560 | const struct lookup_funcinfo * lookup1 = a; | |
2561 | const struct lookup_funcinfo * lookup2 = b; | |
2562 | ||
2563 | if (lookup1->low_addr < lookup2->low_addr) | |
2564 | return -1; | |
2565 | if (lookup1->low_addr > lookup2->low_addr) | |
2566 | return 1; | |
2567 | if (lookup1->high_addr < lookup2->high_addr) | |
2568 | return -1; | |
2569 | if (lookup1->high_addr > lookup2->high_addr) | |
2570 | return 1; | |
2571 | ||
2572 | return 0; | |
2573 | } | |
2574 | ||
2575 | static bfd_boolean | |
2576 | build_lookup_funcinfo_table (struct comp_unit * unit) | |
2577 | { | |
2578 | struct lookup_funcinfo *lookup_funcinfo_table = unit->lookup_funcinfo_table; | |
2579 | unsigned int number_of_functions = unit->number_of_functions; | |
2580 | struct funcinfo *each; | |
2581 | struct lookup_funcinfo *entry; | |
b6ddcd85 | 2582 | size_t func_index; |
089e3718 IT |
2583 | struct arange *range; |
2584 | bfd_vma low_addr, high_addr; | |
2585 | ||
2586 | if (lookup_funcinfo_table || number_of_functions == 0) | |
2587 | return TRUE; | |
2588 | ||
2589 | /* Create the function info lookup table. */ | |
2590 | lookup_funcinfo_table = (struct lookup_funcinfo *) | |
2591 | bfd_malloc (number_of_functions * sizeof (struct lookup_funcinfo)); | |
2592 | if (lookup_funcinfo_table == NULL) | |
2593 | return FALSE; | |
2594 | ||
2595 | /* Populate the function info lookup table. */ | |
b6ddcd85 | 2596 | func_index = number_of_functions; |
089e3718 IT |
2597 | for (each = unit->function_table; each; each = each->prev_func) |
2598 | { | |
b6ddcd85 | 2599 | entry = &lookup_funcinfo_table[--func_index]; |
089e3718 IT |
2600 | entry->funcinfo = each; |
2601 | ||
2602 | /* Calculate the lowest and highest address for this function entry. */ | |
2603 | low_addr = entry->funcinfo->arange.low; | |
2604 | high_addr = entry->funcinfo->arange.high; | |
2605 | ||
2606 | for (range = entry->funcinfo->arange.next; range; range = range->next) | |
2607 | { | |
2608 | if (range->low < low_addr) | |
2609 | low_addr = range->low; | |
2610 | if (range->high > high_addr) | |
2611 | high_addr = range->high; | |
2612 | } | |
2613 | ||
2614 | entry->low_addr = low_addr; | |
2615 | entry->high_addr = high_addr; | |
2616 | } | |
2617 | ||
b6ddcd85 | 2618 | BFD_ASSERT (func_index == 0); |
089e3718 IT |
2619 | |
2620 | /* Sort the function by address. */ | |
2621 | qsort (lookup_funcinfo_table, | |
2622 | number_of_functions, | |
2623 | sizeof (struct lookup_funcinfo), | |
2624 | compare_lookup_funcinfos); | |
2625 | ||
2626 | /* Calculate the high watermark for each function in the lookup table. */ | |
2627 | high_addr = lookup_funcinfo_table[0].high_addr; | |
b6ddcd85 | 2628 | for (func_index = 1; func_index < number_of_functions; func_index++) |
089e3718 | 2629 | { |
b6ddcd85 | 2630 | entry = &lookup_funcinfo_table[func_index]; |
089e3718 IT |
2631 | if (entry->high_addr > high_addr) |
2632 | high_addr = entry->high_addr; | |
2633 | else | |
2634 | entry->high_addr = high_addr; | |
2635 | } | |
2636 | ||
2637 | unit->lookup_funcinfo_table = lookup_funcinfo_table; | |
2638 | return TRUE; | |
2639 | } | |
2640 | ||
e00e8198 | 2641 | /* If ADDR is within UNIT's function tables, set FUNCTION_PTR, and return |
240d6706 NC |
2642 | TRUE. Note that we need to find the function that has the smallest range |
2643 | that contains ADDR, to handle inlined functions without depending upon | |
2644 | them being ordered in TABLE by increasing range. */ | |
252b5132 | 2645 | |
b34976b6 | 2646 | static bfd_boolean |
4ab527b0 | 2647 | lookup_address_in_function_table (struct comp_unit *unit, |
818a27ac | 2648 | bfd_vma addr, |
e00e8198 | 2649 | struct funcinfo **function_ptr) |
252b5132 | 2650 | { |
089e3718 IT |
2651 | unsigned int number_of_functions = unit->number_of_functions; |
2652 | struct lookup_funcinfo* lookup_funcinfo = NULL; | |
2653 | struct funcinfo* funcinfo = NULL; | |
a13afe8e | 2654 | struct funcinfo* best_fit = NULL; |
4ba3b326 | 2655 | bfd_vma best_fit_len = 0; |
089e3718 | 2656 | bfd_size_type low, high, mid, first; |
a13afe8e | 2657 | struct arange *arange; |
252b5132 | 2658 | |
cd6581da NC |
2659 | if (number_of_functions == 0) |
2660 | return FALSE; | |
2661 | ||
089e3718 IT |
2662 | if (!build_lookup_funcinfo_table (unit)) |
2663 | return FALSE; | |
2664 | ||
cd6581da NC |
2665 | if (unit->lookup_funcinfo_table[number_of_functions - 1].high_addr < addr) |
2666 | return FALSE; | |
07d6d2b8 | 2667 | |
089e3718 IT |
2668 | /* Find the first function in the lookup table which may contain the |
2669 | specified address. */ | |
2670 | low = 0; | |
2671 | high = number_of_functions; | |
2672 | first = high; | |
2673 | while (low < high) | |
252b5132 | 2674 | { |
089e3718 IT |
2675 | mid = (low + high) / 2; |
2676 | lookup_funcinfo = &unit->lookup_funcinfo_table[mid]; | |
2677 | if (addr < lookup_funcinfo->low_addr) | |
2678 | high = mid; | |
2679 | else if (addr >= lookup_funcinfo->high_addr) | |
2680 | low = mid + 1; | |
2681 | else | |
2682 | high = first = mid; | |
2683 | } | |
2684 | ||
2685 | /* Find the 'best' match for the address. The prior algorithm defined the | |
2686 | best match as the function with the smallest address range containing | |
2687 | the specified address. This definition should probably be changed to the | |
2688 | innermost inline routine containing the address, but right now we want | |
2689 | to get the same results we did before. */ | |
2690 | while (first < number_of_functions) | |
2691 | { | |
2692 | if (addr < unit->lookup_funcinfo_table[first].low_addr) | |
2693 | break; | |
2694 | funcinfo = unit->lookup_funcinfo_table[first].funcinfo; | |
2695 | ||
2696 | for (arange = &funcinfo->arange; arange; arange = arange->next) | |
252b5132 | 2697 | { |
089e3718 IT |
2698 | if (addr < arange->low || addr >= arange->high) |
2699 | continue; | |
2700 | ||
2701 | if (!best_fit | |
2702 | || arange->high - arange->low < best_fit_len | |
2703 | /* The following comparison is designed to return the same | |
2704 | match as the previous algorithm for routines which have the | |
2705 | same best fit length. */ | |
2706 | || (arange->high - arange->low == best_fit_len | |
2707 | && funcinfo > best_fit)) | |
a13afe8e | 2708 | { |
089e3718 IT |
2709 | best_fit = funcinfo; |
2710 | best_fit_len = arange->high - arange->low; | |
a13afe8e | 2711 | } |
252b5132 | 2712 | } |
98591c73 | 2713 | |
089e3718 | 2714 | first++; |
a13afe8e | 2715 | } |
089e3718 IT |
2716 | |
2717 | if (!best_fit) | |
2718 | return FALSE; | |
2719 | ||
2720 | *function_ptr = best_fit; | |
2721 | return TRUE; | |
252b5132 RH |
2722 | } |
2723 | ||
5420f73d L |
2724 | /* If SYM at ADDR is within function table of UNIT, set FILENAME_PTR |
2725 | and LINENUMBER_PTR, and return TRUE. */ | |
2726 | ||
2727 | static bfd_boolean | |
2728 | lookup_symbol_in_function_table (struct comp_unit *unit, | |
2729 | asymbol *sym, | |
2730 | bfd_vma addr, | |
2731 | const char **filename_ptr, | |
2732 | unsigned int *linenumber_ptr) | |
2733 | { | |
2734 | struct funcinfo* each_func; | |
2735 | struct funcinfo* best_fit = NULL; | |
4ba3b326 | 2736 | bfd_vma best_fit_len = 0; |
5420f73d L |
2737 | struct arange *arange; |
2738 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 2739 | asection *sec = bfd_asymbol_section (sym); |
5420f73d L |
2740 | |
2741 | for (each_func = unit->function_table; | |
2742 | each_func; | |
2743 | each_func = each_func->prev_func) | |
2744 | { | |
2745 | for (arange = &each_func->arange; | |
2746 | arange; | |
2747 | arange = arange->next) | |
2748 | { | |
2749 | if ((!each_func->sec || each_func->sec == sec) | |
2750 | && addr >= arange->low | |
2751 | && addr < arange->high | |
650f284e | 2752 | && each_func->name |
5420f73d L |
2753 | && strcmp (name, each_func->name) == 0 |
2754 | && (!best_fit | |
4ba3b326 TG |
2755 | || arange->high - arange->low < best_fit_len)) |
2756 | { | |
2757 | best_fit = each_func; | |
2758 | best_fit_len = arange->high - arange->low; | |
2759 | } | |
5420f73d L |
2760 | } |
2761 | } | |
2762 | ||
2763 | if (best_fit) | |
2764 | { | |
2765 | best_fit->sec = sec; | |
2766 | *filename_ptr = best_fit->file; | |
2767 | *linenumber_ptr = best_fit->line; | |
2768 | return TRUE; | |
2769 | } | |
2770 | else | |
2771 | return FALSE; | |
2772 | } | |
2773 | ||
2774 | /* Variable table functions. */ | |
2775 | ||
2776 | /* If SYM is within variable table of UNIT, set FILENAME_PTR and | |
2777 | LINENUMBER_PTR, and return TRUE. */ | |
2778 | ||
2779 | static bfd_boolean | |
2780 | lookup_symbol_in_variable_table (struct comp_unit *unit, | |
2781 | asymbol *sym, | |
5cf2e3f0 | 2782 | bfd_vma addr, |
5420f73d L |
2783 | const char **filename_ptr, |
2784 | unsigned int *linenumber_ptr) | |
2785 | { | |
2786 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 2787 | asection *sec = bfd_asymbol_section (sym); |
5420f73d L |
2788 | struct varinfo* each; |
2789 | ||
2790 | for (each = unit->variable_table; each; each = each->prev_var) | |
2791 | if (each->stack == 0 | |
5cf2e3f0 L |
2792 | && each->file != NULL |
2793 | && each->name != NULL | |
2794 | && each->addr == addr | |
5420f73d L |
2795 | && (!each->sec || each->sec == sec) |
2796 | && strcmp (name, each->name) == 0) | |
2797 | break; | |
2798 | ||
2799 | if (each) | |
2800 | { | |
2801 | each->sec = sec; | |
2802 | *filename_ptr = each->file; | |
2803 | *linenumber_ptr = each->line; | |
2804 | return TRUE; | |
2805 | } | |
089e3718 IT |
2806 | |
2807 | return FALSE; | |
5420f73d L |
2808 | } |
2809 | ||
dfc19da6 | 2810 | static struct comp_unit *stash_comp_unit (struct dwarf2_debug *); |
c327a44f AM |
2811 | static bfd_boolean comp_unit_maybe_decode_line_info (struct comp_unit *, |
2812 | struct dwarf2_debug *); | |
2813 | ||
52a93b95 | 2814 | static bfd_boolean |
063c511b AM |
2815 | find_abstract_instance (struct comp_unit *unit, |
2816 | struct attribute *attr_ptr, | |
2817 | unsigned int recur_count, | |
2818 | const char **pname, | |
2819 | bfd_boolean *is_linkage, | |
2820 | char **filename_ptr, | |
2821 | int *linenumber_ptr) | |
06f22d7e FF |
2822 | { |
2823 | bfd *abfd = unit->abfd; | |
f075ee0c | 2824 | bfd_byte *info_ptr; |
dbb3fbbb | 2825 | bfd_byte *info_ptr_end; |
06f22d7e FF |
2826 | unsigned int abbrev_number, bytes_read, i; |
2827 | struct abbrev_info *abbrev; | |
5609a71e | 2828 | bfd_uint64_t die_ref = attr_ptr->u.val; |
06f22d7e | 2829 | struct attribute attr; |
52a93b95 | 2830 | const char *name = NULL; |
06f22d7e | 2831 | |
063c511b AM |
2832 | if (recur_count == 100) |
2833 | { | |
2834 | _bfd_error_handler | |
2835 | (_("DWARF error: abstract instance recursion detected")); | |
2836 | bfd_set_error (bfd_error_bad_value); | |
2837 | return FALSE; | |
2838 | } | |
2839 | ||
5609a71e DJ |
2840 | /* DW_FORM_ref_addr can reference an entry in a different CU. It |
2841 | is an offset from the .debug_info section, not the current CU. */ | |
2842 | if (attr_ptr->form == DW_FORM_ref_addr) | |
2843 | { | |
2844 | /* We only support DW_FORM_ref_addr within the same file, so | |
1b86808a AM |
2845 | any relocations should be resolved already. Check this by |
2846 | testing for a zero die_ref; There can't be a valid reference | |
2847 | to the header of a .debug_info section. | |
2848 | DW_FORM_ref_addr is an offset relative to .debug_info. | |
2849 | Normally when using the GNU linker this is accomplished by | |
2850 | emitting a symbolic reference to a label, because .debug_info | |
2851 | sections are linked at zero. When there are multiple section | |
2852 | groups containing .debug_info, as there might be in a | |
2853 | relocatable object file, it would be reasonable to assume that | |
2854 | a symbolic reference to a label in any .debug_info section | |
2855 | might be used. Since we lay out multiple .debug_info | |
2856 | sections at non-zero VMAs (see place_sections), and read | |
2857 | them contiguously into stash->info_ptr_memory, that means | |
2858 | the reference is relative to stash->info_ptr_memory. */ | |
2859 | size_t total; | |
2860 | ||
2861 | info_ptr = unit->stash->info_ptr_memory; | |
2862 | info_ptr_end = unit->stash->info_ptr_end; | |
2863 | total = info_ptr_end - info_ptr; | |
a4cd947a AM |
2864 | if (!die_ref) |
2865 | return TRUE; | |
2866 | else if (die_ref >= total) | |
52a93b95 AM |
2867 | { |
2868 | _bfd_error_handler | |
9793eb77 | 2869 | (_("DWARF error: invalid abstract instance DIE ref")); |
52a93b95 AM |
2870 | bfd_set_error (bfd_error_bad_value); |
2871 | return FALSE; | |
2872 | } | |
1b86808a | 2873 | info_ptr += die_ref; |
0a9c7b2b NC |
2874 | |
2875 | /* Now find the CU containing this pointer. */ | |
2876 | if (info_ptr >= unit->info_ptr_unit && info_ptr < unit->end_ptr) | |
1b86808a | 2877 | info_ptr_end = unit->end_ptr; |
0a9c7b2b NC |
2878 | else |
2879 | { | |
2880 | /* Check other CUs to see if they contain the abbrev. */ | |
2881 | struct comp_unit * u; | |
2882 | ||
2883 | for (u = unit->prev_unit; u != NULL; u = u->prev_unit) | |
2884 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
2885 | break; | |
2886 | ||
2887 | if (u == NULL) | |
2888 | for (u = unit->next_unit; u != NULL; u = u->next_unit) | |
2889 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
2890 | break; | |
2891 | ||
dfc19da6 | 2892 | while (u == NULL) |
1b86808a | 2893 | { |
dfc19da6 AM |
2894 | u = stash_comp_unit (unit->stash); |
2895 | if (u == NULL) | |
2896 | break; | |
2897 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
2898 | break; | |
2899 | u = NULL; | |
1b86808a | 2900 | } |
dfc19da6 AM |
2901 | |
2902 | if (u == NULL) | |
2903 | { | |
2904 | _bfd_error_handler | |
2905 | (_("DWARF error: unable to locate abstract instance DIE ref %" | |
2906 | PRIu64), (uint64_t) die_ref); | |
2907 | bfd_set_error (bfd_error_bad_value); | |
2908 | return FALSE; | |
2909 | } | |
2910 | unit = u; | |
2911 | info_ptr_end = unit->end_ptr; | |
0a9c7b2b | 2912 | } |
5609a71e | 2913 | } |
95e34fb4 NC |
2914 | else if (attr_ptr->form == DW_FORM_GNU_ref_alt) |
2915 | { | |
2916 | info_ptr = read_alt_indirect_ref (unit, die_ref); | |
2917 | if (info_ptr == NULL) | |
2918 | { | |
4eca0228 | 2919 | _bfd_error_handler |
9793eb77 | 2920 | (_("DWARF error: unable to read alt ref %" PRIu64), |
8979927a | 2921 | (uint64_t) die_ref); |
95e34fb4 | 2922 | bfd_set_error (bfd_error_bad_value); |
52a93b95 | 2923 | return FALSE; |
95e34fb4 | 2924 | } |
52a93b95 AM |
2925 | info_ptr_end = (unit->stash->alt_dwarf_info_buffer |
2926 | + unit->stash->alt_dwarf_info_size); | |
dbb3fbbb | 2927 | |
0a9c7b2b NC |
2928 | /* FIXME: Do we need to locate the correct CU, in a similar |
2929 | fashion to the code in the DW_FORM_ref_addr case above ? */ | |
95e34fb4 | 2930 | } |
68ffbac6 | 2931 | else |
dbb3fbbb | 2932 | { |
1b86808a AM |
2933 | /* DW_FORM_ref1, DW_FORM_ref2, DW_FORM_ref4, DW_FORM_ref8 or |
2934 | DW_FORM_ref_udata. These are all references relative to the | |
2935 | start of the current CU. */ | |
2936 | size_t total; | |
2937 | ||
2938 | info_ptr = unit->info_ptr_unit; | |
dbb3fbbb | 2939 | info_ptr_end = unit->end_ptr; |
1b86808a AM |
2940 | total = info_ptr_end - info_ptr; |
2941 | if (!die_ref || die_ref >= total) | |
2942 | { | |
2943 | _bfd_error_handler | |
9793eb77 | 2944 | (_("DWARF error: invalid abstract instance DIE ref")); |
1b86808a AM |
2945 | bfd_set_error (bfd_error_bad_value); |
2946 | return FALSE; | |
2947 | } | |
2948 | info_ptr += die_ref; | |
dbb3fbbb | 2949 | } |
95e34fb4 | 2950 | |
4265548c PA |
2951 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
2952 | FALSE, info_ptr_end); | |
06f22d7e FF |
2953 | info_ptr += bytes_read; |
2954 | ||
2955 | if (abbrev_number) | |
2956 | { | |
2957 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); | |
2958 | if (! abbrev) | |
2959 | { | |
4eca0228 | 2960 | _bfd_error_handler |
9793eb77 | 2961 | (_("DWARF error: could not find abbrev number %u"), abbrev_number); |
06f22d7e | 2962 | bfd_set_error (bfd_error_bad_value); |
52a93b95 | 2963 | return FALSE; |
06f22d7e FF |
2964 | } |
2965 | else | |
2966 | { | |
d5cbaa15 | 2967 | for (i = 0; i < abbrev->num_attrs; ++i) |
06f22d7e | 2968 | { |
8af6b354 | 2969 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, |
dbb3fbbb | 2970 | info_ptr, info_ptr_end); |
8af6b354 AM |
2971 | if (info_ptr == NULL) |
2972 | break; | |
26bf4e33 FF |
2973 | switch (attr.name) |
2974 | { | |
2975 | case DW_AT_name: | |
643be349 JJ |
2976 | /* Prefer DW_AT_MIPS_linkage_name or DW_AT_linkage_name |
2977 | over DW_AT_name. */ | |
60d77146 | 2978 | if (name == NULL && is_str_attr (attr.form)) |
e00e8198 AM |
2979 | { |
2980 | name = attr.u.str; | |
2981 | if (non_mangled (unit->lang)) | |
2982 | *is_linkage = TRUE; | |
2983 | } | |
26bf4e33 FF |
2984 | break; |
2985 | case DW_AT_specification: | |
063c511b | 2986 | if (!find_abstract_instance (unit, &attr, recur_count + 1, |
c8d3f932 | 2987 | &name, is_linkage, |
422f3d3d | 2988 | filename_ptr, linenumber_ptr)) |
52a93b95 | 2989 | return FALSE; |
26bf4e33 | 2990 | break; |
643be349 | 2991 | case DW_AT_linkage_name: |
d5cbaa15 | 2992 | case DW_AT_MIPS_linkage_name: |
60d77146 NC |
2993 | /* PR 16949: Corrupt debug info can place |
2994 | non-string forms into these attributes. */ | |
6d74e8a1 | 2995 | if (is_str_attr (attr.form)) |
e00e8198 AM |
2996 | { |
2997 | name = attr.u.str; | |
2998 | *is_linkage = TRUE; | |
2999 | } | |
d5cbaa15 | 3000 | break; |
422f3d3d | 3001 | case DW_AT_decl_file: |
dfc19da6 AM |
3002 | if (!comp_unit_maybe_decode_line_info (unit, unit->stash)) |
3003 | return FALSE; | |
422f3d3d PC |
3004 | *filename_ptr = concat_filename (unit->line_table, |
3005 | attr.u.val); | |
3006 | break; | |
3007 | case DW_AT_decl_line: | |
3008 | *linenumber_ptr = attr.u.val; | |
3009 | break; | |
26bf4e33 FF |
3010 | default: |
3011 | break; | |
3012 | } | |
06f22d7e FF |
3013 | } |
3014 | } | |
3015 | } | |
52a93b95 AM |
3016 | *pname = name; |
3017 | return TRUE; | |
06f22d7e FF |
3018 | } |
3019 | ||
8af6b354 AM |
3020 | static bfd_boolean |
3021 | read_rangelist (struct comp_unit *unit, struct arange *arange, | |
3022 | bfd_uint64_t offset) | |
a13afe8e FF |
3023 | { |
3024 | bfd_byte *ranges_ptr; | |
dbb3fbbb | 3025 | bfd_byte *ranges_end; |
a13afe8e FF |
3026 | bfd_vma base_address = unit->base_address; |
3027 | ||
3028 | if (! unit->stash->dwarf_ranges_buffer) | |
3029 | { | |
3030 | if (! read_debug_ranges (unit)) | |
8af6b354 | 3031 | return FALSE; |
a13afe8e | 3032 | } |
d8d1c398 | 3033 | |
dbb3fbbb NC |
3034 | ranges_ptr = unit->stash->dwarf_ranges_buffer + offset; |
3035 | if (ranges_ptr < unit->stash->dwarf_ranges_buffer) | |
3036 | return FALSE; | |
3037 | ranges_end = unit->stash->dwarf_ranges_buffer + unit->stash->dwarf_ranges_size; | |
62f8d217 | 3038 | |
a13afe8e FF |
3039 | for (;;) |
3040 | { | |
3041 | bfd_vma low_pc; | |
3042 | bfd_vma high_pc; | |
3043 | ||
dbb3fbbb | 3044 | /* PR 17512: file: 62cada7d. */ |
62f8d217 | 3045 | if (ranges_ptr + 2 * unit->addr_size > ranges_end) |
dbb3fbbb NC |
3046 | return FALSE; |
3047 | ||
3048 | low_pc = read_address (unit, ranges_ptr, ranges_end); | |
13d72a14 | 3049 | ranges_ptr += unit->addr_size; |
dbb3fbbb | 3050 | high_pc = read_address (unit, ranges_ptr, ranges_end); |
13d72a14 AN |
3051 | ranges_ptr += unit->addr_size; |
3052 | ||
a13afe8e FF |
3053 | if (low_pc == 0 && high_pc == 0) |
3054 | break; | |
3055 | if (low_pc == -1UL && high_pc != -1UL) | |
3056 | base_address = high_pc; | |
3057 | else | |
8af6b354 | 3058 | { |
a2a50954 | 3059 | if (!arange_add (unit, arange, |
8af6b354 AM |
3060 | base_address + low_pc, base_address + high_pc)) |
3061 | return FALSE; | |
3062 | } | |
a13afe8e | 3063 | } |
8af6b354 | 3064 | return TRUE; |
a13afe8e FF |
3065 | } |
3066 | ||
a092b084 | 3067 | /* DWARF2 Compilation unit functions. */ |
252b5132 RH |
3068 | |
3069 | /* Scan over each die in a comp. unit looking for functions to add | |
34b5e0b2 | 3070 | to the function table and variables to the variable table. */ |
252b5132 | 3071 | |
b34976b6 | 3072 | static bfd_boolean |
5420f73d | 3073 | scan_unit_for_symbols (struct comp_unit *unit) |
252b5132 RH |
3074 | { |
3075 | bfd *abfd = unit->abfd; | |
f075ee0c | 3076 | bfd_byte *info_ptr = unit->first_child_die_ptr; |
05192282 | 3077 | bfd_byte *info_ptr_end = unit->end_ptr; |
52a93b95 AM |
3078 | int nesting_level = 0; |
3079 | struct nest_funcinfo { | |
3080 | struct funcinfo *func; | |
3081 | } *nested_funcs; | |
c955f9cd JW |
3082 | int nested_funcs_size; |
3083 | ||
3084 | /* Maintain a stack of in-scope functions and inlined functions, which we | |
3085 | can use to set the caller_func field. */ | |
3086 | nested_funcs_size = 32; | |
52a93b95 AM |
3087 | nested_funcs = (struct nest_funcinfo *) |
3088 | bfd_malloc (nested_funcs_size * sizeof (*nested_funcs)); | |
c955f9cd JW |
3089 | if (nested_funcs == NULL) |
3090 | return FALSE; | |
52a93b95 | 3091 | nested_funcs[nesting_level].func = 0; |
252b5132 | 3092 | |
52a93b95 | 3093 | while (nesting_level >= 0) |
252b5132 RH |
3094 | { |
3095 | unsigned int abbrev_number, bytes_read, i; | |
3096 | struct abbrev_info *abbrev; | |
3097 | struct attribute attr; | |
3098 | struct funcinfo *func; | |
5420f73d | 3099 | struct varinfo *var; |
a13afe8e FF |
3100 | bfd_vma low_pc = 0; |
3101 | bfd_vma high_pc = 0; | |
c49ead2f | 3102 | bfd_boolean high_pc_relative = FALSE; |
252b5132 | 3103 | |
877a8638 | 3104 | /* PR 17512: file: 9f405d9d. */ |
dbb3fbbb | 3105 | if (info_ptr >= info_ptr_end) |
877a8638 | 3106 | goto fail; |
62f8d217 | 3107 | |
4265548c PA |
3108 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
3109 | FALSE, info_ptr_end); | |
252b5132 RH |
3110 | info_ptr += bytes_read; |
3111 | ||
3112 | if (! abbrev_number) | |
3113 | { | |
3114 | nesting_level--; | |
3115 | continue; | |
3116 | } | |
98591c73 | 3117 | |
e643cb45 | 3118 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); |
252b5132 RH |
3119 | if (! abbrev) |
3120 | { | |
e643cb45 NC |
3121 | static unsigned int previous_failed_abbrev = -1U; |
3122 | ||
3123 | /* Avoid multiple reports of the same missing abbrev. */ | |
3124 | if (abbrev_number != previous_failed_abbrev) | |
3125 | { | |
3126 | _bfd_error_handler | |
9793eb77 | 3127 | (_("DWARF error: could not find abbrev number %u"), |
e643cb45 NC |
3128 | abbrev_number); |
3129 | previous_failed_abbrev = abbrev_number; | |
3130 | } | |
252b5132 | 3131 | bfd_set_error (bfd_error_bad_value); |
8af6b354 | 3132 | goto fail; |
252b5132 | 3133 | } |
98591c73 | 3134 | |
5420f73d | 3135 | var = NULL; |
06f22d7e | 3136 | if (abbrev->tag == DW_TAG_subprogram |
5420f73d | 3137 | || abbrev->tag == DW_TAG_entry_point |
06f22d7e | 3138 | || abbrev->tag == DW_TAG_inlined_subroutine) |
252b5132 | 3139 | { |
dc810e39 | 3140 | bfd_size_type amt = sizeof (struct funcinfo); |
a50b1753 | 3141 | func = (struct funcinfo *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
3142 | if (func == NULL) |
3143 | goto fail; | |
4ab527b0 | 3144 | func->tag = abbrev->tag; |
252b5132 RH |
3145 | func->prev_func = unit->function_table; |
3146 | unit->function_table = func; | |
e643cb45 | 3147 | unit->number_of_functions++; |
bd210d54 | 3148 | BFD_ASSERT (!unit->cached); |
c955f9cd JW |
3149 | |
3150 | if (func->tag == DW_TAG_inlined_subroutine) | |
52a93b95 AM |
3151 | for (i = nesting_level; i-- != 0; ) |
3152 | if (nested_funcs[i].func) | |
c955f9cd | 3153 | { |
52a93b95 | 3154 | func->caller_func = nested_funcs[i].func; |
c955f9cd JW |
3155 | break; |
3156 | } | |
52a93b95 | 3157 | nested_funcs[nesting_level].func = func; |
252b5132 RH |
3158 | } |
3159 | else | |
5420f73d L |
3160 | { |
3161 | func = NULL; | |
3162 | if (abbrev->tag == DW_TAG_variable) | |
3163 | { | |
3164 | bfd_size_type amt = sizeof (struct varinfo); | |
a50b1753 | 3165 | var = (struct varinfo *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
3166 | if (var == NULL) |
3167 | goto fail; | |
5420f73d L |
3168 | var->tag = abbrev->tag; |
3169 | var->stack = 1; | |
3170 | var->prev_var = unit->variable_table; | |
3171 | unit->variable_table = var; | |
e643cb45 NC |
3172 | /* PR 18205: Missing debug information can cause this |
3173 | var to be attached to an already cached unit. */ | |
5420f73d | 3174 | } |
c955f9cd JW |
3175 | |
3176 | /* No inline function in scope at this nesting level. */ | |
52a93b95 | 3177 | nested_funcs[nesting_level].func = 0; |
5420f73d | 3178 | } |
98591c73 | 3179 | |
252b5132 RH |
3180 | for (i = 0; i < abbrev->num_attrs; ++i) |
3181 | { | |
52a93b95 AM |
3182 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], |
3183 | unit, info_ptr, info_ptr_end); | |
8af6b354 | 3184 | if (info_ptr == NULL) |
8ecc1f20 | 3185 | goto fail; |
98591c73 | 3186 | |
252b5132 RH |
3187 | if (func) |
3188 | { | |
3189 | switch (attr.name) | |
3190 | { | |
4ab527b0 | 3191 | case DW_AT_call_file: |
8af6b354 AM |
3192 | func->caller_file = concat_filename (unit->line_table, |
3193 | attr.u.val); | |
4ab527b0 FF |
3194 | break; |
3195 | ||
3196 | case DW_AT_call_line: | |
3197 | func->caller_line = attr.u.val; | |
3198 | break; | |
3199 | ||
06f22d7e | 3200 | case DW_AT_abstract_origin: |
5d8e6b4d | 3201 | case DW_AT_specification: |
063c511b | 3202 | if (!find_abstract_instance (unit, &attr, 0, |
422f3d3d PC |
3203 | &func->name, |
3204 | &func->is_linkage, | |
3205 | &func->file, | |
3206 | &func->line)) | |
52a93b95 | 3207 | goto fail; |
06f22d7e FF |
3208 | break; |
3209 | ||
252b5132 | 3210 | case DW_AT_name: |
643be349 JJ |
3211 | /* Prefer DW_AT_MIPS_linkage_name or DW_AT_linkage_name |
3212 | over DW_AT_name. */ | |
60d77146 | 3213 | if (func->name == NULL && is_str_attr (attr.form)) |
e00e8198 AM |
3214 | { |
3215 | func->name = attr.u.str; | |
3216 | if (non_mangled (unit->lang)) | |
3217 | func->is_linkage = TRUE; | |
3218 | } | |
252b5132 | 3219 | break; |
98591c73 | 3220 | |
643be349 | 3221 | case DW_AT_linkage_name: |
252b5132 | 3222 | case DW_AT_MIPS_linkage_name: |
60d77146 NC |
3223 | /* PR 16949: Corrupt debug info can place |
3224 | non-string forms into these attributes. */ | |
3225 | if (is_str_attr (attr.form)) | |
e00e8198 AM |
3226 | { |
3227 | func->name = attr.u.str; | |
3228 | func->is_linkage = TRUE; | |
3229 | } | |
252b5132 RH |
3230 | break; |
3231 | ||
3232 | case DW_AT_low_pc: | |
a13afe8e | 3233 | low_pc = attr.u.val; |
252b5132 RH |
3234 | break; |
3235 | ||
3236 | case DW_AT_high_pc: | |
a13afe8e | 3237 | high_pc = attr.u.val; |
c49ead2f | 3238 | high_pc_relative = attr.form != DW_FORM_addr; |
a13afe8e FF |
3239 | break; |
3240 | ||
3241 | case DW_AT_ranges: | |
8af6b354 AM |
3242 | if (!read_rangelist (unit, &func->arange, attr.u.val)) |
3243 | goto fail; | |
252b5132 RH |
3244 | break; |
3245 | ||
5420f73d L |
3246 | case DW_AT_decl_file: |
3247 | func->file = concat_filename (unit->line_table, | |
3248 | attr.u.val); | |
3249 | break; | |
3250 | ||
3251 | case DW_AT_decl_line: | |
3252 | func->line = attr.u.val; | |
3253 | break; | |
3254 | ||
3255 | default: | |
3256 | break; | |
3257 | } | |
3258 | } | |
3259 | else if (var) | |
3260 | { | |
3261 | switch (attr.name) | |
3262 | { | |
3263 | case DW_AT_name: | |
11855d8a AM |
3264 | if (is_str_attr (attr.form)) |
3265 | var->name = attr.u.str; | |
5420f73d L |
3266 | break; |
3267 | ||
3268 | case DW_AT_decl_file: | |
3269 | var->file = concat_filename (unit->line_table, | |
3270 | attr.u.val); | |
3271 | break; | |
3272 | ||
3273 | case DW_AT_decl_line: | |
3274 | var->line = attr.u.val; | |
3275 | break; | |
3276 | ||
3277 | case DW_AT_external: | |
3278 | if (attr.u.val != 0) | |
3279 | var->stack = 0; | |
3280 | break; | |
3281 | ||
3282 | case DW_AT_location: | |
5cf2e3f0 | 3283 | switch (attr.form) |
5420f73d | 3284 | { |
5cf2e3f0 L |
3285 | case DW_FORM_block: |
3286 | case DW_FORM_block1: | |
3287 | case DW_FORM_block2: | |
3288 | case DW_FORM_block4: | |
c07cbdd7 | 3289 | case DW_FORM_exprloc: |
0d76029f AM |
3290 | if (attr.u.blk->data != NULL |
3291 | && *attr.u.blk->data == DW_OP_addr) | |
5420f73d | 3292 | { |
5cf2e3f0 | 3293 | var->stack = 0; |
98b880f4 JW |
3294 | |
3295 | /* Verify that DW_OP_addr is the only opcode in the | |
3296 | location, in which case the block size will be 1 | |
3297 | plus the address size. */ | |
3298 | /* ??? For TLS variables, gcc can emit | |
3299 | DW_OP_addr <addr> DW_OP_GNU_push_tls_address | |
3300 | which we don't handle here yet. */ | |
3301 | if (attr.u.blk->size == unit->addr_size + 1U) | |
3302 | var->addr = bfd_get (unit->addr_size * 8, | |
3303 | unit->abfd, | |
3304 | attr.u.blk->data + 1); | |
5420f73d | 3305 | } |
5cf2e3f0 | 3306 | break; |
d8d1c398 | 3307 | |
5cf2e3f0 L |
3308 | default: |
3309 | break; | |
5420f73d L |
3310 | } |
3311 | break; | |
3312 | ||
252b5132 RH |
3313 | default: |
3314 | break; | |
3315 | } | |
3316 | } | |
3317 | } | |
3318 | ||
c49ead2f MW |
3319 | if (high_pc_relative) |
3320 | high_pc += low_pc; | |
3321 | ||
a13afe8e FF |
3322 | if (func && high_pc != 0) |
3323 | { | |
a2a50954 | 3324 | if (!arange_add (unit, &func->arange, low_pc, high_pc)) |
8af6b354 | 3325 | goto fail; |
a13afe8e FF |
3326 | } |
3327 | ||
252b5132 | 3328 | if (abbrev->has_children) |
c955f9cd JW |
3329 | { |
3330 | nesting_level++; | |
3331 | ||
3332 | if (nesting_level >= nested_funcs_size) | |
3333 | { | |
52a93b95 | 3334 | struct nest_funcinfo *tmp; |
c955f9cd JW |
3335 | |
3336 | nested_funcs_size *= 2; | |
52a93b95 | 3337 | tmp = (struct nest_funcinfo *) |
a2a50954 | 3338 | bfd_realloc (nested_funcs, |
52a93b95 | 3339 | nested_funcs_size * sizeof (*nested_funcs)); |
c955f9cd | 3340 | if (tmp == NULL) |
8af6b354 | 3341 | goto fail; |
c955f9cd JW |
3342 | nested_funcs = tmp; |
3343 | } | |
52a93b95 | 3344 | nested_funcs[nesting_level].func = 0; |
c955f9cd | 3345 | } |
252b5132 RH |
3346 | } |
3347 | ||
c955f9cd | 3348 | free (nested_funcs); |
b34976b6 | 3349 | return TRUE; |
8af6b354 AM |
3350 | |
3351 | fail: | |
3352 | free (nested_funcs); | |
3353 | return FALSE; | |
252b5132 RH |
3354 | } |
3355 | ||
dfc19da6 | 3356 | /* Parse a DWARF2 compilation unit starting at INFO_PTR. UNIT_LENGTH |
5e38c3b8 | 3357 | includes the compilation unit header that proceeds the DIE's, but |
5c4491d3 | 3358 | does not include the length field that precedes each compilation |
5e38c3b8 | 3359 | unit header. END_PTR points one past the end of this comp unit. |
d03ba2a1 | 3360 | OFFSET_SIZE is the size of DWARF2 offsets (either 4 or 8 bytes). |
252b5132 RH |
3361 | |
3362 | This routine does not read the whole compilation unit; only enough | |
3363 | to get to the line number information for the compilation unit. */ | |
3364 | ||
3365 | static struct comp_unit * | |
0d161102 | 3366 | parse_comp_unit (struct dwarf2_debug *stash, |
818a27ac | 3367 | bfd_vma unit_length, |
f075ee0c | 3368 | bfd_byte *info_ptr_unit, |
818a27ac | 3369 | unsigned int offset_size) |
252b5132 RH |
3370 | { |
3371 | struct comp_unit* unit; | |
f46c2da6 | 3372 | unsigned int version; |
8ce8c090 | 3373 | bfd_uint64_t abbrev_offset = 0; |
0041f7df JK |
3374 | /* Initialize it just to avoid a GCC false warning. */ |
3375 | unsigned int addr_size = -1; | |
252b5132 | 3376 | struct abbrev_info** abbrevs; |
252b5132 RH |
3377 | unsigned int abbrev_number, bytes_read, i; |
3378 | struct abbrev_info *abbrev; | |
3379 | struct attribute attr; | |
f075ee0c AM |
3380 | bfd_byte *info_ptr = stash->info_ptr; |
3381 | bfd_byte *end_ptr = info_ptr + unit_length; | |
dc810e39 | 3382 | bfd_size_type amt; |
a13afe8e FF |
3383 | bfd_vma low_pc = 0; |
3384 | bfd_vma high_pc = 0; | |
a50b1753 | 3385 | bfd *abfd = stash->bfd_ptr; |
c49ead2f | 3386 | bfd_boolean high_pc_relative = FALSE; |
0041f7df | 3387 | enum dwarf_unit_type unit_type; |
3fde5a36 | 3388 | |
dbb3fbbb | 3389 | version = read_2_bytes (abfd, info_ptr, end_ptr); |
252b5132 | 3390 | info_ptr += 2; |
0041f7df | 3391 | if (version < 2 || version > 5) |
252b5132 | 3392 | { |
67f101ee NC |
3393 | /* PR 19872: A version number of 0 probably means that there is padding |
3394 | at the end of the .debug_info section. Gold puts it there when | |
3395 | performing an incremental link, for example. So do not generate | |
3396 | an error, just return a NULL. */ | |
3397 | if (version) | |
3398 | { | |
4eca0228 | 3399 | _bfd_error_handler |
9793eb77 AM |
3400 | (_("DWARF error: found dwarf version '%u', this reader" |
3401 | " only handles version 2, 3, 4 and 5 information"), version); | |
67f101ee NC |
3402 | bfd_set_error (bfd_error_bad_value); |
3403 | } | |
3404 | return NULL; | |
252b5132 RH |
3405 | } |
3406 | ||
0041f7df JK |
3407 | if (version < 5) |
3408 | unit_type = DW_UT_compile; | |
3409 | else | |
3410 | { | |
3411 | unit_type = read_1_byte (abfd, info_ptr, end_ptr); | |
3412 | info_ptr += 1; | |
3413 | ||
3414 | addr_size = read_1_byte (abfd, info_ptr, end_ptr); | |
3415 | info_ptr += 1; | |
3416 | } | |
3417 | ||
3418 | BFD_ASSERT (offset_size == 4 || offset_size == 8); | |
3419 | if (offset_size == 4) | |
3420 | abbrev_offset = read_4_bytes (abfd, info_ptr, end_ptr); | |
3421 | else | |
3422 | abbrev_offset = read_8_bytes (abfd, info_ptr, end_ptr); | |
3423 | info_ptr += offset_size; | |
3424 | ||
3425 | if (version < 5) | |
3426 | { | |
3427 | addr_size = read_1_byte (abfd, info_ptr, end_ptr); | |
3428 | info_ptr += 1; | |
3429 | } | |
3430 | ||
3431 | if (unit_type == DW_UT_type) | |
3432 | { | |
3433 | /* Skip type signature. */ | |
3434 | info_ptr += 8; | |
3435 | ||
3436 | /* Skip type offset. */ | |
3437 | info_ptr += offset_size; | |
3438 | } | |
3439 | ||
252b5132 RH |
3440 | if (addr_size > sizeof (bfd_vma)) |
3441 | { | |
4eca0228 | 3442 | _bfd_error_handler |
695344c0 | 3443 | /* xgettext: c-format */ |
9793eb77 AM |
3444 | (_("DWARF error: found address size '%u', this reader" |
3445 | " can not handle sizes greater than '%u'"), | |
a2a50954 AM |
3446 | addr_size, |
3447 | (unsigned int) sizeof (bfd_vma)); | |
252b5132 | 3448 | bfd_set_error (bfd_error_bad_value); |
67f101ee | 3449 | return NULL; |
252b5132 RH |
3450 | } |
3451 | ||
ecb651f0 | 3452 | if (addr_size != 2 && addr_size != 4 && addr_size != 8) |
252b5132 | 3453 | { |
4eca0228 | 3454 | _bfd_error_handler |
9793eb77 AM |
3455 | ("DWARF error: found address size '%u', this reader" |
3456 | " can only handle address sizes '2', '4' and '8'", addr_size); | |
252b5132 | 3457 | bfd_set_error (bfd_error_bad_value); |
67f101ee | 3458 | return NULL; |
252b5132 RH |
3459 | } |
3460 | ||
a092b084 | 3461 | /* Read the abbrevs for this compilation unit into a table. */ |
51db3708 | 3462 | abbrevs = read_abbrevs (abfd, abbrev_offset, stash); |
252b5132 | 3463 | if (! abbrevs) |
67f101ee | 3464 | return NULL; |
252b5132 | 3465 | |
4265548c PA |
3466 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
3467 | FALSE, end_ptr); | |
252b5132 RH |
3468 | info_ptr += bytes_read; |
3469 | if (! abbrev_number) | |
3470 | { | |
67f101ee NC |
3471 | /* PR 19872: An abbrev number of 0 probably means that there is padding |
3472 | at the end of the .debug_abbrev section. Gold puts it there when | |
3473 | performing an incremental link, for example. So do not generate | |
3474 | an error, just return a NULL. */ | |
3475 | return NULL; | |
252b5132 RH |
3476 | } |
3477 | ||
3478 | abbrev = lookup_abbrev (abbrev_number, abbrevs); | |
3479 | if (! abbrev) | |
3480 | { | |
9793eb77 | 3481 | _bfd_error_handler (_("DWARF error: could not find abbrev number %u"), |
4eca0228 | 3482 | abbrev_number); |
252b5132 | 3483 | bfd_set_error (bfd_error_bad_value); |
67f101ee | 3484 | return NULL; |
252b5132 | 3485 | } |
98591c73 | 3486 | |
dc810e39 | 3487 | amt = sizeof (struct comp_unit); |
a50b1753 | 3488 | unit = (struct comp_unit *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
3489 | if (unit == NULL) |
3490 | return NULL; | |
252b5132 | 3491 | unit->abfd = abfd; |
5609a71e | 3492 | unit->version = version; |
98591c73 | 3493 | unit->addr_size = addr_size; |
d03ba2a1 | 3494 | unit->offset_size = offset_size; |
252b5132 RH |
3495 | unit->abbrevs = abbrevs; |
3496 | unit->end_ptr = end_ptr; | |
d03ba2a1 | 3497 | unit->stash = stash; |
c0c28ab8 | 3498 | unit->info_ptr_unit = info_ptr_unit; |
252b5132 RH |
3499 | |
3500 | for (i = 0; i < abbrev->num_attrs; ++i) | |
3501 | { | |
dbb3fbbb | 3502 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr, end_ptr); |
8af6b354 AM |
3503 | if (info_ptr == NULL) |
3504 | return NULL; | |
252b5132 RH |
3505 | |
3506 | /* Store the data if it is of an attribute we want to keep in a | |
3507 | partial symbol table. */ | |
3508 | switch (attr.name) | |
3509 | { | |
3510 | case DW_AT_stmt_list: | |
3511 | unit->stmtlist = 1; | |
482e2e37 | 3512 | unit->line_offset = attr.u.val; |
252b5132 RH |
3513 | break; |
3514 | ||
3515 | case DW_AT_name: | |
11855d8a AM |
3516 | if (is_str_attr (attr.form)) |
3517 | unit->name = attr.u.str; | |
252b5132 RH |
3518 | break; |
3519 | ||
3520 | case DW_AT_low_pc: | |
a13afe8e FF |
3521 | low_pc = attr.u.val; |
3522 | /* If the compilation unit DIE has a DW_AT_low_pc attribute, | |
3523 | this is the base address to use when reading location | |
089e3718 | 3524 | lists or range lists. */ |
a2a50954 AM |
3525 | if (abbrev->tag == DW_TAG_compile_unit) |
3526 | unit->base_address = low_pc; | |
252b5132 RH |
3527 | break; |
3528 | ||
3529 | case DW_AT_high_pc: | |
a13afe8e | 3530 | high_pc = attr.u.val; |
c49ead2f | 3531 | high_pc_relative = attr.form != DW_FORM_addr; |
a13afe8e FF |
3532 | break; |
3533 | ||
3534 | case DW_AT_ranges: | |
8af6b354 AM |
3535 | if (!read_rangelist (unit, &unit->arange, attr.u.val)) |
3536 | return NULL; | |
252b5132 RH |
3537 | break; |
3538 | ||
3539 | case DW_AT_comp_dir: | |
3540 | { | |
f075ee0c | 3541 | char *comp_dir = attr.u.str; |
877a8638 NC |
3542 | |
3543 | /* PR 17512: file: 1fe726be. */ | |
3544 | if (! is_str_attr (attr.form)) | |
3545 | { | |
4eca0228 | 3546 | _bfd_error_handler |
9793eb77 | 3547 | (_("DWARF error: DW_AT_comp_dir attribute encountered with a non-string form")); |
877a8638 NC |
3548 | comp_dir = NULL; |
3549 | } | |
3550 | ||
252b5132 RH |
3551 | if (comp_dir) |
3552 | { | |
3553 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
3554 | directory, get rid of it. */ | |
818a27ac | 3555 | char *cp = strchr (comp_dir, ':'); |
252b5132 RH |
3556 | |
3557 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
3558 | comp_dir = cp + 1; | |
3559 | } | |
3560 | unit->comp_dir = comp_dir; | |
3561 | break; | |
3562 | } | |
3563 | ||
e00e8198 AM |
3564 | case DW_AT_language: |
3565 | unit->lang = attr.u.val; | |
3566 | break; | |
3567 | ||
252b5132 RH |
3568 | default: |
3569 | break; | |
3570 | } | |
3571 | } | |
c49ead2f MW |
3572 | if (high_pc_relative) |
3573 | high_pc += low_pc; | |
a13afe8e | 3574 | if (high_pc != 0) |
709d67f1 | 3575 | { |
a2a50954 | 3576 | if (!arange_add (unit, &unit->arange, low_pc, high_pc)) |
8af6b354 | 3577 | return NULL; |
709d67f1 | 3578 | } |
252b5132 RH |
3579 | |
3580 | unit->first_child_die_ptr = info_ptr; | |
3581 | return unit; | |
3582 | } | |
3583 | ||
6dd55cb7 L |
3584 | /* Return TRUE if UNIT may contain the address given by ADDR. When |
3585 | there are functions written entirely with inline asm statements, the | |
3586 | range info in the compilation unit header may not be correct. We | |
3587 | need to consult the line info table to see if a compilation unit | |
3588 | really contains the given address. */ | |
252b5132 | 3589 | |
b34976b6 | 3590 | static bfd_boolean |
818a27ac | 3591 | comp_unit_contains_address (struct comp_unit *unit, bfd_vma addr) |
252b5132 | 3592 | { |
709d67f1 AM |
3593 | struct arange *arange; |
3594 | ||
3595 | if (unit->error) | |
3596 | return FALSE; | |
3597 | ||
3598 | arange = &unit->arange; | |
3599 | do | |
3600 | { | |
3601 | if (addr >= arange->low && addr < arange->high) | |
3602 | return TRUE; | |
3603 | arange = arange->next; | |
3604 | } | |
3605 | while (arange); | |
3606 | ||
3607 | return FALSE; | |
252b5132 RH |
3608 | } |
3609 | ||
252b5132 RH |
3610 | /* If UNIT contains ADDR, set the output parameters to the values for |
3611 | the line containing ADDR. The output parameters, FILENAME_PTR, | |
e00e8198 | 3612 | FUNCTION_PTR, and LINENUMBER_PTR, are pointers to the objects |
98591c73 | 3613 | to be filled in. |
252b5132 | 3614 | |
240d6706 NC |
3615 | Returns the range of addresses covered by the entry that was used |
3616 | to fill in *LINENUMBER_PTR or 0 if it was not filled in. */ | |
252b5132 | 3617 | |
240d6706 | 3618 | static bfd_vma |
818a27ac AM |
3619 | comp_unit_find_nearest_line (struct comp_unit *unit, |
3620 | bfd_vma addr, | |
3621 | const char **filename_ptr, | |
e00e8198 | 3622 | struct funcinfo **function_ptr, |
818a27ac | 3623 | unsigned int *linenumber_ptr, |
9b8d1a36 | 3624 | unsigned int *discriminator_ptr, |
818a27ac | 3625 | struct dwarf2_debug *stash) |
252b5132 | 3626 | { |
b34976b6 | 3627 | bfd_boolean func_p; |
98591c73 | 3628 | |
c327a44f | 3629 | if (!comp_unit_maybe_decode_line_info (unit, stash)) |
b34976b6 | 3630 | return FALSE; |
252b5132 | 3631 | |
e00e8198 AM |
3632 | *function_ptr = NULL; |
3633 | func_p = lookup_address_in_function_table (unit, addr, function_ptr); | |
3634 | if (func_p && (*function_ptr)->tag == DW_TAG_inlined_subroutine) | |
3635 | stash->inliner_chain = *function_ptr; | |
240d6706 NC |
3636 | |
3637 | return lookup_address_in_line_info_table (unit->line_table, addr, | |
3638 | filename_ptr, | |
3639 | linenumber_ptr, | |
3640 | discriminator_ptr); | |
252b5132 RH |
3641 | } |
3642 | ||
bd210d54 NC |
3643 | /* Check to see if line info is already decoded in a comp_unit. |
3644 | If not, decode it. Returns TRUE if no errors were encountered; | |
5420f73d L |
3645 | FALSE otherwise. */ |
3646 | ||
3647 | static bfd_boolean | |
bd210d54 NC |
3648 | comp_unit_maybe_decode_line_info (struct comp_unit *unit, |
3649 | struct dwarf2_debug *stash) | |
5420f73d L |
3650 | { |
3651 | if (unit->error) | |
3652 | return FALSE; | |
3653 | ||
3654 | if (! unit->line_table) | |
3655 | { | |
3656 | if (! unit->stmtlist) | |
3657 | { | |
3658 | unit->error = 1; | |
3659 | return FALSE; | |
3660 | } | |
3661 | ||
3662 | unit->line_table = decode_line_info (unit, stash); | |
3663 | ||
3664 | if (! unit->line_table) | |
3665 | { | |
3666 | unit->error = 1; | |
3667 | return FALSE; | |
3668 | } | |
3669 | ||
3670 | if (unit->first_child_die_ptr < unit->end_ptr | |
3671 | && ! scan_unit_for_symbols (unit)) | |
3672 | { | |
3673 | unit->error = 1; | |
3674 | return FALSE; | |
3675 | } | |
3676 | } | |
3677 | ||
bd210d54 NC |
3678 | return TRUE; |
3679 | } | |
3680 | ||
3681 | /* If UNIT contains SYM at ADDR, set the output parameters to the | |
3682 | values for the line containing SYM. The output parameters, | |
3683 | FILENAME_PTR, and LINENUMBER_PTR, are pointers to the objects to be | |
3684 | filled in. | |
3685 | ||
3686 | Return TRUE if UNIT contains SYM, and no errors were encountered; | |
3687 | FALSE otherwise. */ | |
3688 | ||
3689 | static bfd_boolean | |
3690 | comp_unit_find_line (struct comp_unit *unit, | |
3691 | asymbol *sym, | |
3692 | bfd_vma addr, | |
3693 | const char **filename_ptr, | |
3694 | unsigned int *linenumber_ptr, | |
3695 | struct dwarf2_debug *stash) | |
3696 | { | |
3697 | if (!comp_unit_maybe_decode_line_info (unit, stash)) | |
3698 | return FALSE; | |
3699 | ||
5420f73d L |
3700 | if (sym->flags & BSF_FUNCTION) |
3701 | return lookup_symbol_in_function_table (unit, sym, addr, | |
3702 | filename_ptr, | |
3703 | linenumber_ptr); | |
bd210d54 NC |
3704 | |
3705 | return lookup_symbol_in_variable_table (unit, sym, addr, | |
3706 | filename_ptr, | |
3707 | linenumber_ptr); | |
3708 | } | |
3709 | ||
3710 | static struct funcinfo * | |
3711 | reverse_funcinfo_list (struct funcinfo *head) | |
3712 | { | |
3713 | struct funcinfo *rhead; | |
3714 | struct funcinfo *temp; | |
3715 | ||
3716 | for (rhead = NULL; head; head = temp) | |
3717 | { | |
3718 | temp = head->prev_func; | |
3719 | head->prev_func = rhead; | |
3720 | rhead = head; | |
3721 | } | |
3722 | return rhead; | |
3723 | } | |
3724 | ||
3725 | static struct varinfo * | |
3726 | reverse_varinfo_list (struct varinfo *head) | |
3727 | { | |
3728 | struct varinfo *rhead; | |
3729 | struct varinfo *temp; | |
3730 | ||
3731 | for (rhead = NULL; head; head = temp) | |
3732 | { | |
3733 | temp = head->prev_var; | |
3734 | head->prev_var = rhead; | |
3735 | rhead = head; | |
3736 | } | |
3737 | return rhead; | |
3738 | } | |
3739 | ||
3740 | /* Extract all interesting funcinfos and varinfos of a compilation | |
3741 | unit into hash tables for faster lookup. Returns TRUE if no | |
3742 | errors were enountered; FALSE otherwise. */ | |
3743 | ||
3744 | static bfd_boolean | |
3745 | comp_unit_hash_info (struct dwarf2_debug *stash, | |
3746 | struct comp_unit *unit, | |
3747 | struct info_hash_table *funcinfo_hash_table, | |
3748 | struct info_hash_table *varinfo_hash_table) | |
3749 | { | |
3750 | struct funcinfo* each_func; | |
3751 | struct varinfo* each_var; | |
3752 | bfd_boolean okay = TRUE; | |
3753 | ||
3754 | BFD_ASSERT (stash->info_hash_status != STASH_INFO_HASH_DISABLED); | |
3755 | ||
3756 | if (!comp_unit_maybe_decode_line_info (unit, stash)) | |
3757 | return FALSE; | |
3758 | ||
3759 | BFD_ASSERT (!unit->cached); | |
3760 | ||
3761 | /* To preserve the original search order, we went to visit the function | |
3762 | infos in the reversed order of the list. However, making the list | |
3763 | bi-directional use quite a bit of extra memory. So we reverse | |
3764 | the list first, traverse the list in the now reversed order and | |
3765 | finally reverse the list again to get back the original order. */ | |
3766 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
3767 | for (each_func = unit->function_table; | |
3768 | each_func && okay; | |
3769 | each_func = each_func->prev_func) | |
3770 | { | |
089e3718 | 3771 | /* Skip nameless functions. */ |
bd210d54 NC |
3772 | if (each_func->name) |
3773 | /* There is no need to copy name string into hash table as | |
3774 | name string is either in the dwarf string buffer or | |
3775 | info in the stash. */ | |
3776 | okay = insert_info_hash_table (funcinfo_hash_table, each_func->name, | |
3777 | (void*) each_func, FALSE); | |
3778 | } | |
3779 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
3780 | if (!okay) | |
3781 | return FALSE; | |
3782 | ||
3783 | /* We do the same for variable infos. */ | |
3784 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
3785 | for (each_var = unit->variable_table; | |
3786 | each_var && okay; | |
3787 | each_var = each_var->prev_var) | |
3788 | { | |
3789 | /* Skip stack vars and vars with no files or names. */ | |
3790 | if (each_var->stack == 0 | |
3791 | && each_var->file != NULL | |
3792 | && each_var->name != NULL) | |
3793 | /* There is no need to copy name string into hash table as | |
3794 | name string is either in the dwarf string buffer or | |
3795 | info in the stash. */ | |
3796 | okay = insert_info_hash_table (varinfo_hash_table, each_var->name, | |
3797 | (void*) each_var, FALSE); | |
3798 | } | |
3799 | ||
3800 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
3801 | unit->cached = TRUE; | |
3802 | return okay; | |
5420f73d L |
3803 | } |
3804 | ||
e2f6d277 NC |
3805 | /* Locate a section in a BFD containing debugging info. The search starts |
3806 | from the section after AFTER_SEC, or from the first section in the BFD if | |
3807 | AFTER_SEC is NULL. The search works by examining the names of the | |
fc28f9aa TG |
3808 | sections. There are three permissiable names. The first two are given |
3809 | by DEBUG_SECTIONS[debug_info] (whose standard DWARF2 names are .debug_info | |
3810 | and .zdebug_info). The third is a prefix .gnu.linkonce.wi. | |
e2f6d277 NC |
3811 | This is a variation on the .debug_info section which has a checksum |
3812 | describing the contents appended onto the name. This allows the linker to | |
3813 | identify and discard duplicate debugging sections for different | |
3814 | compilation units. */ | |
a092b084 NC |
3815 | #define GNU_LINKONCE_INFO ".gnu.linkonce.wi." |
3816 | ||
3817 | static asection * | |
fc28f9aa | 3818 | find_debug_info (bfd *abfd, const struct dwarf_debug_section *debug_sections, |
93ee1e36 | 3819 | asection *after_sec) |
a092b084 | 3820 | { |
a2a50954 AM |
3821 | asection *msec; |
3822 | const char *look; | |
3823 | ||
3824 | if (after_sec == NULL) | |
3825 | { | |
3826 | look = debug_sections[debug_info].uncompressed_name; | |
3827 | msec = bfd_get_section_by_name (abfd, look); | |
3828 | if (msec != NULL) | |
3829 | return msec; | |
a092b084 | 3830 | |
a2a50954 AM |
3831 | look = debug_sections[debug_info].compressed_name; |
3832 | if (look != NULL) | |
3833 | { | |
3834 | msec = bfd_get_section_by_name (abfd, look); | |
3835 | if (msec != NULL) | |
3836 | return msec; | |
3837 | } | |
a092b084 | 3838 | |
a2a50954 AM |
3839 | for (msec = abfd->sections; msec != NULL; msec = msec->next) |
3840 | if (CONST_STRNEQ (msec->name, GNU_LINKONCE_INFO)) | |
3841 | return msec; | |
3842 | ||
3843 | return NULL; | |
3844 | } | |
3845 | ||
3846 | for (msec = after_sec->next; msec != NULL; msec = msec->next) | |
a092b084 | 3847 | { |
a2a50954 AM |
3848 | look = debug_sections[debug_info].uncompressed_name; |
3849 | if (strcmp (msec->name, look) == 0) | |
a092b084 NC |
3850 | return msec; |
3851 | ||
a2a50954 AM |
3852 | look = debug_sections[debug_info].compressed_name; |
3853 | if (look != NULL && strcmp (msec->name, look) == 0) | |
1b315056 CS |
3854 | return msec; |
3855 | ||
0112cd26 | 3856 | if (CONST_STRNEQ (msec->name, GNU_LINKONCE_INFO)) |
a092b084 | 3857 | return msec; |
a092b084 NC |
3858 | } |
3859 | ||
3860 | return NULL; | |
3861 | } | |
3862 | ||
93ee1e36 AM |
3863 | /* Transfer VMAs from object file to separate debug file. */ |
3864 | ||
3865 | static void | |
3866 | set_debug_vma (bfd *orig_bfd, bfd *debug_bfd) | |
3867 | { | |
3868 | asection *s, *d; | |
3869 | ||
3870 | for (s = orig_bfd->sections, d = debug_bfd->sections; | |
3871 | s != NULL && d != NULL; | |
3872 | s = s->next, d = d->next) | |
3873 | { | |
3874 | if ((d->flags & SEC_DEBUGGING) != 0) | |
3875 | break; | |
3876 | /* ??? Assumes 1-1 correspondence between sections in the | |
3877 | two files. */ | |
3878 | if (strcmp (s->name, d->name) == 0) | |
3879 | { | |
3880 | d->output_section = s->output_section; | |
3881 | d->output_offset = s->output_offset; | |
3882 | d->vma = s->vma; | |
3883 | } | |
3884 | } | |
3885 | } | |
3886 | ||
5609a71e | 3887 | /* Unset vmas for adjusted sections in STASH. */ |
d4c32a81 L |
3888 | |
3889 | static void | |
3890 | unset_sections (struct dwarf2_debug *stash) | |
3891 | { | |
93ee1e36 | 3892 | int i; |
5609a71e | 3893 | struct adjusted_section *p; |
d4c32a81 | 3894 | |
5609a71e DJ |
3895 | i = stash->adjusted_section_count; |
3896 | p = stash->adjusted_sections; | |
d4c32a81 L |
3897 | for (; i > 0; i--, p++) |
3898 | p->section->vma = 0; | |
3899 | } | |
3900 | ||
93ee1e36 AM |
3901 | /* Set VMAs for allocated and .debug_info sections in ORIG_BFD, a |
3902 | relocatable object file. VMAs are normally all zero in relocatable | |
3903 | object files, so if we want to distinguish locations in sections by | |
3904 | address we need to set VMAs so the sections do not overlap. We | |
3905 | also set VMA on .debug_info so that when we have multiple | |
3906 | .debug_info sections (or the linkonce variant) they also do not | |
3907 | overlap. The multiple .debug_info sections make up a single | |
3908 | logical section. ??? We should probably do the same for other | |
3909 | debug sections. */ | |
35ccda9e L |
3910 | |
3911 | static bfd_boolean | |
93ee1e36 | 3912 | place_sections (bfd *orig_bfd, struct dwarf2_debug *stash) |
35ccda9e | 3913 | { |
93ee1e36 | 3914 | bfd *abfd; |
5609a71e | 3915 | struct adjusted_section *p; |
93ee1e36 AM |
3916 | int i; |
3917 | const char *debug_info_name; | |
d4c32a81 | 3918 | |
5609a71e | 3919 | if (stash->adjusted_section_count != 0) |
35ccda9e | 3920 | { |
5609a71e DJ |
3921 | i = stash->adjusted_section_count; |
3922 | p = stash->adjusted_sections; | |
d4c32a81 L |
3923 | for (; i > 0; i--, p++) |
3924 | p->section->vma = p->adj_vma; | |
93ee1e36 | 3925 | return TRUE; |
d4c32a81 | 3926 | } |
93ee1e36 AM |
3927 | |
3928 | debug_info_name = stash->debug_sections[debug_info].uncompressed_name; | |
3929 | i = 0; | |
3930 | abfd = orig_bfd; | |
3931 | while (1) | |
d4c32a81 L |
3932 | { |
3933 | asection *sect; | |
35ccda9e | 3934 | |
d4c32a81 | 3935 | for (sect = abfd->sections; sect != NULL; sect = sect->next) |
35ccda9e | 3936 | { |
5609a71e DJ |
3937 | int is_debug_info; |
3938 | ||
cd0449ab | 3939 | if ((sect->output_section != NULL |
93ee1e36 AM |
3940 | && sect->output_section != sect |
3941 | && (sect->flags & SEC_DEBUGGING) == 0) | |
cd0449ab | 3942 | || sect->vma != 0) |
5609a71e DJ |
3943 | continue; |
3944 | ||
93ee1e36 AM |
3945 | is_debug_info = (strcmp (sect->name, debug_info_name) == 0 |
3946 | || CONST_STRNEQ (sect->name, GNU_LINKONCE_INFO)); | |
d4c32a81 | 3947 | |
93ee1e36 AM |
3948 | if (!((sect->flags & SEC_ALLOC) != 0 && abfd == orig_bfd) |
3949 | && !is_debug_info) | |
d4c32a81 L |
3950 | continue; |
3951 | ||
3952 | i++; | |
3953 | } | |
93ee1e36 AM |
3954 | if (abfd == stash->bfd_ptr) |
3955 | break; | |
3956 | abfd = stash->bfd_ptr; | |
3957 | } | |
3958 | ||
3959 | if (i <= 1) | |
3960 | stash->adjusted_section_count = -1; | |
3961 | else | |
3962 | { | |
3963 | bfd_vma last_vma = 0, last_dwarf = 0; | |
3964 | bfd_size_type amt = i * sizeof (struct adjusted_section); | |
d4c32a81 | 3965 | |
93ee1e36 AM |
3966 | p = (struct adjusted_section *) bfd_malloc (amt); |
3967 | if (p == NULL) | |
d4c32a81 L |
3968 | return FALSE; |
3969 | ||
5609a71e DJ |
3970 | stash->adjusted_sections = p; |
3971 | stash->adjusted_section_count = i; | |
d4c32a81 | 3972 | |
93ee1e36 AM |
3973 | abfd = orig_bfd; |
3974 | while (1) | |
d4c32a81 | 3975 | { |
93ee1e36 | 3976 | asection *sect; |
d4c32a81 | 3977 | |
93ee1e36 AM |
3978 | for (sect = abfd->sections; sect != NULL; sect = sect->next) |
3979 | { | |
3980 | bfd_size_type sz; | |
3981 | int is_debug_info; | |
5609a71e | 3982 | |
93ee1e36 AM |
3983 | if ((sect->output_section != NULL |
3984 | && sect->output_section != sect | |
3985 | && (sect->flags & SEC_DEBUGGING) == 0) | |
3986 | || sect->vma != 0) | |
3987 | continue; | |
5609a71e | 3988 | |
93ee1e36 AM |
3989 | is_debug_info = (strcmp (sect->name, debug_info_name) == 0 |
3990 | || CONST_STRNEQ (sect->name, GNU_LINKONCE_INFO)); | |
d4c32a81 | 3991 | |
93ee1e36 AM |
3992 | if (!((sect->flags & SEC_ALLOC) != 0 && abfd == orig_bfd) |
3993 | && !is_debug_info) | |
3994 | continue; | |
d4c32a81 | 3995 | |
93ee1e36 | 3996 | sz = sect->rawsize ? sect->rawsize : sect->size; |
5609a71e | 3997 | |
93ee1e36 AM |
3998 | if (is_debug_info) |
3999 | { | |
4000 | BFD_ASSERT (sect->alignment_power == 0); | |
4001 | sect->vma = last_dwarf; | |
4002 | last_dwarf += sz; | |
4003 | } | |
4004 | else | |
4005 | { | |
4006 | /* Align the new address to the current section | |
4007 | alignment. */ | |
4008 | last_vma = ((last_vma | |
29f628db DV |
4009 | + ~(-((bfd_vma) 1 << sect->alignment_power))) |
4010 | & (-((bfd_vma) 1 << sect->alignment_power))); | |
93ee1e36 AM |
4011 | sect->vma = last_vma; |
4012 | last_vma += sz; | |
4013 | } | |
d4c32a81 | 4014 | |
93ee1e36 AM |
4015 | p->section = sect; |
4016 | p->adj_vma = sect->vma; | |
4017 | p++; | |
4018 | } | |
4019 | if (abfd == stash->bfd_ptr) | |
4020 | break; | |
4021 | abfd = stash->bfd_ptr; | |
35ccda9e L |
4022 | } |
4023 | } | |
4024 | ||
93ee1e36 AM |
4025 | if (orig_bfd != stash->bfd_ptr) |
4026 | set_debug_vma (orig_bfd, stash->bfd_ptr); | |
4027 | ||
35ccda9e L |
4028 | return TRUE; |
4029 | } | |
4030 | ||
bd210d54 NC |
4031 | /* Look up a funcinfo by name using the given info hash table. If found, |
4032 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
4033 | ||
4034 | This function returns TRUE if a funcinfo that matches the given symbol | |
4035 | and address is found with any error; otherwise it returns FALSE. */ | |
4036 | ||
4037 | static bfd_boolean | |
4038 | info_hash_lookup_funcinfo (struct info_hash_table *hash_table, | |
4039 | asymbol *sym, | |
4040 | bfd_vma addr, | |
4041 | const char **filename_ptr, | |
4042 | unsigned int *linenumber_ptr) | |
4043 | { | |
4044 | struct funcinfo* each_func; | |
4045 | struct funcinfo* best_fit = NULL; | |
4ba3b326 | 4046 | bfd_vma best_fit_len = 0; |
bd210d54 NC |
4047 | struct info_list_node *node; |
4048 | struct arange *arange; | |
4049 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 4050 | asection *sec = bfd_asymbol_section (sym); |
bd210d54 NC |
4051 | |
4052 | for (node = lookup_info_hash_table (hash_table, name); | |
4053 | node; | |
4054 | node = node->next) | |
4055 | { | |
a50b1753 | 4056 | each_func = (struct funcinfo *) node->info; |
bd210d54 NC |
4057 | for (arange = &each_func->arange; |
4058 | arange; | |
4059 | arange = arange->next) | |
4060 | { | |
4061 | if ((!each_func->sec || each_func->sec == sec) | |
4062 | && addr >= arange->low | |
4063 | && addr < arange->high | |
4064 | && (!best_fit | |
4ba3b326 TG |
4065 | || arange->high - arange->low < best_fit_len)) |
4066 | { | |
4067 | best_fit = each_func; | |
4068 | best_fit_len = arange->high - arange->low; | |
4069 | } | |
bd210d54 NC |
4070 | } |
4071 | } | |
4072 | ||
4073 | if (best_fit) | |
4074 | { | |
4075 | best_fit->sec = sec; | |
4076 | *filename_ptr = best_fit->file; | |
4077 | *linenumber_ptr = best_fit->line; | |
4078 | return TRUE; | |
4079 | } | |
4080 | ||
4081 | return FALSE; | |
4082 | } | |
4083 | ||
4084 | /* Look up a varinfo by name using the given info hash table. If found, | |
4085 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
4086 | ||
4087 | This function returns TRUE if a varinfo that matches the given symbol | |
4088 | and address is found with any error; otherwise it returns FALSE. */ | |
4089 | ||
4090 | static bfd_boolean | |
4091 | info_hash_lookup_varinfo (struct info_hash_table *hash_table, | |
4092 | asymbol *sym, | |
4093 | bfd_vma addr, | |
4094 | const char **filename_ptr, | |
4095 | unsigned int *linenumber_ptr) | |
4096 | { | |
4097 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 4098 | asection *sec = bfd_asymbol_section (sym); |
bd210d54 NC |
4099 | struct varinfo* each; |
4100 | struct info_list_node *node; | |
4101 | ||
4102 | for (node = lookup_info_hash_table (hash_table, name); | |
4103 | node; | |
4104 | node = node->next) | |
4105 | { | |
a50b1753 | 4106 | each = (struct varinfo *) node->info; |
bd210d54 NC |
4107 | if (each->addr == addr |
4108 | && (!each->sec || each->sec == sec)) | |
4109 | { | |
4110 | each->sec = sec; | |
4111 | *filename_ptr = each->file; | |
4112 | *linenumber_ptr = each->line; | |
4113 | return TRUE; | |
4114 | } | |
4115 | } | |
4116 | ||
4117 | return FALSE; | |
4118 | } | |
4119 | ||
4120 | /* Update the funcinfo and varinfo info hash tables if they are | |
4121 | not up to date. Returns TRUE if there is no error; otherwise | |
4122 | returns FALSE and disable the info hash tables. */ | |
4123 | ||
4124 | static bfd_boolean | |
4125 | stash_maybe_update_info_hash_tables (struct dwarf2_debug *stash) | |
4126 | { | |
4127 | struct comp_unit *each; | |
4128 | ||
4129 | /* Exit if hash tables are up-to-date. */ | |
4130 | if (stash->all_comp_units == stash->hash_units_head) | |
4131 | return TRUE; | |
4132 | ||
4133 | if (stash->hash_units_head) | |
4134 | each = stash->hash_units_head->prev_unit; | |
4135 | else | |
4136 | each = stash->last_comp_unit; | |
4137 | ||
4138 | while (each) | |
4139 | { | |
4140 | if (!comp_unit_hash_info (stash, each, stash->funcinfo_hash_table, | |
4141 | stash->varinfo_hash_table)) | |
4142 | { | |
4143 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
4144 | return FALSE; | |
4145 | } | |
4146 | each = each->prev_unit; | |
4147 | } | |
4148 | ||
4149 | stash->hash_units_head = stash->all_comp_units; | |
4150 | return TRUE; | |
4151 | } | |
4152 | ||
089e3718 | 4153 | /* Check consistency of info hash tables. This is for debugging only. */ |
bd210d54 NC |
4154 | |
4155 | static void ATTRIBUTE_UNUSED | |
4156 | stash_verify_info_hash_table (struct dwarf2_debug *stash) | |
4157 | { | |
4158 | struct comp_unit *each_unit; | |
4159 | struct funcinfo *each_func; | |
4160 | struct varinfo *each_var; | |
4161 | struct info_list_node *node; | |
4162 | bfd_boolean found; | |
4163 | ||
4164 | for (each_unit = stash->all_comp_units; | |
4165 | each_unit; | |
4166 | each_unit = each_unit->next_unit) | |
4167 | { | |
4168 | for (each_func = each_unit->function_table; | |
4169 | each_func; | |
4170 | each_func = each_func->prev_func) | |
4171 | { | |
4172 | if (!each_func->name) | |
4173 | continue; | |
4174 | node = lookup_info_hash_table (stash->funcinfo_hash_table, | |
4175 | each_func->name); | |
4176 | BFD_ASSERT (node); | |
4177 | found = FALSE; | |
4178 | while (node && !found) | |
4179 | { | |
4180 | found = node->info == each_func; | |
4181 | node = node->next; | |
4182 | } | |
4183 | BFD_ASSERT (found); | |
4184 | } | |
4185 | ||
4186 | for (each_var = each_unit->variable_table; | |
4187 | each_var; | |
4188 | each_var = each_var->prev_var) | |
4189 | { | |
4190 | if (!each_var->name || !each_var->file || each_var->stack) | |
4191 | continue; | |
4192 | node = lookup_info_hash_table (stash->varinfo_hash_table, | |
4193 | each_var->name); | |
4194 | BFD_ASSERT (node); | |
4195 | found = FALSE; | |
4196 | while (node && !found) | |
4197 | { | |
4198 | found = node->info == each_var; | |
4199 | node = node->next; | |
4200 | } | |
4201 | BFD_ASSERT (found); | |
4202 | } | |
4203 | } | |
4204 | } | |
4205 | ||
4206 | /* Check to see if we want to enable the info hash tables, which consume | |
4207 | quite a bit of memory. Currently we only check the number times | |
4208 | bfd_dwarf2_find_line is called. In the future, we may also want to | |
4209 | take the number of symbols into account. */ | |
4210 | ||
4211 | static void | |
4212 | stash_maybe_enable_info_hash_tables (bfd *abfd, struct dwarf2_debug *stash) | |
4213 | { | |
4214 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_OFF); | |
4215 | ||
4216 | if (stash->info_hash_count++ < STASH_INFO_HASH_TRIGGER) | |
4217 | return; | |
4218 | ||
4219 | /* FIXME: Maybe we should check the reduce_memory_overheads | |
4220 | and optimize fields in the bfd_link_info structure ? */ | |
4221 | ||
4222 | /* Create hash tables. */ | |
4223 | stash->funcinfo_hash_table = create_info_hash_table (abfd); | |
4224 | stash->varinfo_hash_table = create_info_hash_table (abfd); | |
4225 | if (!stash->funcinfo_hash_table || !stash->varinfo_hash_table) | |
4226 | { | |
4227 | /* Turn off info hashes if any allocation above fails. */ | |
4228 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
4229 | return; | |
4230 | } | |
4231 | /* We need a forced update so that the info hash tables will | |
4232 | be created even though there is no compilation unit. That | |
4233 | happens if STASH_INFO_HASH_TRIGGER is 0. */ | |
e168da45 MF |
4234 | if (stash_maybe_update_info_hash_tables (stash)) |
4235 | stash->info_hash_status = STASH_INFO_HASH_ON; | |
bd210d54 NC |
4236 | } |
4237 | ||
4238 | /* Find the file and line associated with a symbol and address using the | |
4239 | info hash tables of a stash. If there is a match, the function returns | |
4240 | TRUE and update the locations pointed to by filename_ptr and linenumber_ptr; | |
4241 | otherwise it returns FALSE. */ | |
4242 | ||
4243 | static bfd_boolean | |
4244 | stash_find_line_fast (struct dwarf2_debug *stash, | |
4245 | asymbol *sym, | |
4246 | bfd_vma addr, | |
4247 | const char **filename_ptr, | |
4248 | unsigned int *linenumber_ptr) | |
4249 | { | |
4250 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_ON); | |
4251 | ||
4252 | if (sym->flags & BSF_FUNCTION) | |
4253 | return info_hash_lookup_funcinfo (stash->funcinfo_hash_table, sym, addr, | |
4254 | filename_ptr, linenumber_ptr); | |
4255 | return info_hash_lookup_varinfo (stash->varinfo_hash_table, sym, addr, | |
4256 | filename_ptr, linenumber_ptr); | |
4257 | } | |
4258 | ||
cd0449ab AM |
4259 | /* Save current section VMAs. */ |
4260 | ||
4261 | static bfd_boolean | |
4262 | save_section_vma (const bfd *abfd, struct dwarf2_debug *stash) | |
4263 | { | |
4264 | asection *s; | |
4265 | unsigned int i; | |
4266 | ||
4267 | if (abfd->section_count == 0) | |
4268 | return TRUE; | |
4269 | stash->sec_vma = bfd_malloc (sizeof (*stash->sec_vma) * abfd->section_count); | |
4270 | if (stash->sec_vma == NULL) | |
4271 | return FALSE; | |
d7f848c3 | 4272 | stash->sec_vma_count = abfd->section_count; |
0eb32b6e AM |
4273 | for (i = 0, s = abfd->sections; |
4274 | s != NULL && i < abfd->section_count; | |
4275 | i++, s = s->next) | |
cd0449ab AM |
4276 | { |
4277 | if (s->output_section != NULL) | |
4278 | stash->sec_vma[i] = s->output_section->vma + s->output_offset; | |
4279 | else | |
4280 | stash->sec_vma[i] = s->vma; | |
4281 | } | |
4282 | return TRUE; | |
4283 | } | |
4284 | ||
4285 | /* Compare current section VMAs against those at the time the stash | |
4286 | was created. If find_nearest_line is used in linker warnings or | |
4287 | errors early in the link process, the debug info stash will be | |
4288 | invalid for later calls. This is because we relocate debug info | |
4289 | sections, so the stashed section contents depend on symbol values, | |
4290 | which in turn depend on section VMAs. */ | |
4291 | ||
4292 | static bfd_boolean | |
4293 | section_vma_same (const bfd *abfd, const struct dwarf2_debug *stash) | |
4294 | { | |
4295 | asection *s; | |
4296 | unsigned int i; | |
4297 | ||
d7f848c3 NC |
4298 | /* PR 24334: If the number of sections in ABFD has changed between |
4299 | when the stash was created and now, then we cannot trust the | |
4300 | stashed vma information. */ | |
4301 | if (abfd->section_count != stash->sec_vma_count) | |
4302 | return FALSE; | |
4b24dd1a | 4303 | |
0eb32b6e AM |
4304 | for (i = 0, s = abfd->sections; |
4305 | s != NULL && i < abfd->section_count; | |
4306 | i++, s = s->next) | |
cd0449ab AM |
4307 | { |
4308 | bfd_vma vma; | |
4309 | ||
4310 | if (s->output_section != NULL) | |
4311 | vma = s->output_section->vma + s->output_offset; | |
4312 | else | |
4313 | vma = s->vma; | |
4314 | if (vma != stash->sec_vma[i]) | |
4315 | return FALSE; | |
4316 | } | |
4317 | return TRUE; | |
4318 | } | |
4319 | ||
2ca7691a TG |
4320 | /* Read debug information from DEBUG_BFD when DEBUG_BFD is specified. |
4321 | If DEBUG_BFD is not specified, we read debug information from ABFD | |
4322 | or its gnu_debuglink. The results will be stored in PINFO. | |
4323 | The function returns TRUE iff debug information is ready. */ | |
4324 | ||
4325 | bfd_boolean | |
4326 | _bfd_dwarf2_slurp_debug_info (bfd *abfd, bfd *debug_bfd, | |
93ee1e36 AM |
4327 | const struct dwarf_debug_section *debug_sections, |
4328 | asymbol **symbols, | |
4329 | void **pinfo, | |
4330 | bfd_boolean do_place) | |
2ca7691a TG |
4331 | { |
4332 | bfd_size_type amt = sizeof (struct dwarf2_debug); | |
4333 | bfd_size_type total_size; | |
4334 | asection *msec; | |
4335 | struct dwarf2_debug *stash = (struct dwarf2_debug *) *pinfo; | |
4336 | ||
4337 | if (stash != NULL) | |
cd0449ab | 4338 | { |
90ed9b8b | 4339 | if (stash->orig_bfd == abfd |
07d6d2b8 AM |
4340 | && section_vma_same (abfd, stash)) |
4341 | { | |
4342 | /* Check that we did previously find some debug information | |
4343 | before attempting to make use of it. */ | |
4344 | if (stash->bfd_ptr != NULL) | |
4345 | { | |
4346 | if (do_place && !place_sections (abfd, stash)) | |
4347 | return FALSE; | |
4348 | return TRUE; | |
4349 | } | |
4350 | ||
4351 | return FALSE; | |
4352 | } | |
cd0449ab AM |
4353 | _bfd_dwarf2_cleanup_debug_info (abfd, pinfo); |
4354 | memset (stash, 0, amt); | |
4355 | } | |
4356 | else | |
4357 | { | |
4358 | stash = (struct dwarf2_debug *) bfd_zalloc (abfd, amt); | |
4359 | if (! stash) | |
4360 | return FALSE; | |
4361 | } | |
90ed9b8b | 4362 | stash->orig_bfd = abfd; |
2ca7691a | 4363 | stash->debug_sections = debug_sections; |
1c37913d | 4364 | stash->syms = symbols; |
cd0449ab AM |
4365 | if (!save_section_vma (abfd, stash)) |
4366 | return FALSE; | |
2ca7691a TG |
4367 | |
4368 | *pinfo = stash; | |
4369 | ||
4370 | if (debug_bfd == NULL) | |
4371 | debug_bfd = abfd; | |
4372 | ||
4373 | msec = find_debug_info (debug_bfd, debug_sections, NULL); | |
4374 | if (msec == NULL && abfd == debug_bfd) | |
4375 | { | |
2425a30e NC |
4376 | char * debug_filename; |
4377 | ||
4378 | debug_filename = bfd_follow_build_id_debuglink (abfd, DEBUGDIR); | |
4379 | if (debug_filename == NULL) | |
4380 | debug_filename = bfd_follow_gnu_debuglink (abfd, DEBUGDIR); | |
2ca7691a TG |
4381 | |
4382 | if (debug_filename == NULL) | |
4383 | /* No dwarf2 info, and no gnu_debuglink to follow. | |
4384 | Note that at this point the stash has been allocated, but | |
4385 | contains zeros. This lets future calls to this function | |
4386 | fail more quickly. */ | |
4387 | return FALSE; | |
4388 | ||
22b31fea AM |
4389 | debug_bfd = bfd_openr (debug_filename, NULL); |
4390 | free (debug_filename); | |
4391 | if (debug_bfd == NULL) | |
4392 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
4393 | return FALSE; | |
4394 | ||
bf150a0b | 4395 | /* Set BFD_DECOMPRESS to decompress debug sections. */ |
22b31fea AM |
4396 | debug_bfd->flags |= BFD_DECOMPRESS; |
4397 | if (!bfd_check_format (debug_bfd, bfd_object) | |
2ca7691a | 4398 | || (msec = find_debug_info (debug_bfd, |
93ee1e36 AM |
4399 | debug_sections, NULL)) == NULL |
4400 | || !bfd_generic_link_read_symbols (debug_bfd)) | |
2ca7691a | 4401 | { |
22b31fea | 4402 | bfd_close (debug_bfd); |
2ca7691a TG |
4403 | return FALSE; |
4404 | } | |
93ee1e36 AM |
4405 | |
4406 | symbols = bfd_get_outsymbols (debug_bfd); | |
4407 | stash->syms = symbols; | |
1c37913d | 4408 | stash->close_on_cleanup = TRUE; |
2ca7691a | 4409 | } |
1c37913d | 4410 | stash->bfd_ptr = debug_bfd; |
2ca7691a | 4411 | |
93ee1e36 AM |
4412 | if (do_place |
4413 | && !place_sections (abfd, stash)) | |
4414 | return FALSE; | |
4415 | ||
2ca7691a TG |
4416 | /* There can be more than one DWARF2 info section in a BFD these |
4417 | days. First handle the easy case when there's only one. If | |
4418 | there's more than one, try case two: none of the sections is | |
4419 | compressed. In that case, read them all in and produce one | |
4420 | large stash. We do this in two passes - in the first pass we | |
4421 | just accumulate the section sizes, and in the second pass we | |
4422 | read in the section's contents. (The allows us to avoid | |
4423 | reallocing the data as we add sections to the stash.) If | |
4424 | some or all sections are compressed, then do things the slow | |
4425 | way, with a bunch of reallocs. */ | |
4426 | ||
4427 | if (! find_debug_info (debug_bfd, debug_sections, msec)) | |
4428 | { | |
4429 | /* Case 1: only one info section. */ | |
4430 | total_size = msec->size; | |
4431 | if (! read_section (debug_bfd, &stash->debug_sections[debug_info], | |
4432 | symbols, 0, | |
4433 | &stash->info_ptr_memory, &total_size)) | |
4434 | return FALSE; | |
4435 | } | |
4436 | else | |
4437 | { | |
4438 | /* Case 2: multiple sections. */ | |
4439 | for (total_size = 0; | |
4440 | msec; | |
4441 | msec = find_debug_info (debug_bfd, debug_sections, msec)) | |
336bfbeb AM |
4442 | { |
4443 | /* Catch PR25070 testcase overflowing size calculation here. */ | |
4444 | if (total_size + msec->size < total_size | |
4445 | || total_size + msec->size < msec->size) | |
4446 | { | |
4447 | bfd_set_error (bfd_error_no_memory); | |
4448 | return FALSE; | |
4449 | } | |
4450 | total_size += msec->size; | |
4451 | } | |
2ca7691a TG |
4452 | |
4453 | stash->info_ptr_memory = (bfd_byte *) bfd_malloc (total_size); | |
4454 | if (stash->info_ptr_memory == NULL) | |
4455 | return FALSE; | |
4456 | ||
4457 | total_size = 0; | |
4458 | for (msec = find_debug_info (debug_bfd, debug_sections, NULL); | |
4459 | msec; | |
4460 | msec = find_debug_info (debug_bfd, debug_sections, msec)) | |
4461 | { | |
4462 | bfd_size_type size; | |
4463 | ||
4464 | size = msec->size; | |
4465 | if (size == 0) | |
4466 | continue; | |
4467 | ||
4468 | if (!(bfd_simple_get_relocated_section_contents | |
4469 | (debug_bfd, msec, stash->info_ptr_memory + total_size, | |
4470 | symbols))) | |
4471 | return FALSE; | |
4472 | ||
4473 | total_size += size; | |
4474 | } | |
4475 | } | |
4476 | ||
4477 | stash->info_ptr = stash->info_ptr_memory; | |
4478 | stash->info_ptr_end = stash->info_ptr + total_size; | |
4479 | stash->sec = find_debug_info (debug_bfd, debug_sections, NULL); | |
4480 | stash->sec_info_ptr = stash->info_ptr; | |
2ca7691a TG |
4481 | return TRUE; |
4482 | } | |
4483 | ||
dfc19da6 AM |
4484 | /* Parse the next DWARF2 compilation unit at STASH->INFO_PTR. */ |
4485 | ||
4486 | static struct comp_unit * | |
4487 | stash_comp_unit (struct dwarf2_debug *stash) | |
4488 | { | |
4489 | bfd_size_type length; | |
4490 | unsigned int offset_size; | |
4491 | bfd_byte *info_ptr_unit = stash->info_ptr; | |
4492 | ||
4493 | if (stash->info_ptr >= stash->info_ptr_end) | |
4494 | return NULL; | |
4495 | ||
4496 | length = read_4_bytes (stash->bfd_ptr, stash->info_ptr, | |
4497 | stash->info_ptr_end); | |
4498 | /* A 0xffffff length is the DWARF3 way of indicating | |
4499 | we use 64-bit offsets, instead of 32-bit offsets. */ | |
4500 | if (length == 0xffffffff) | |
4501 | { | |
4502 | offset_size = 8; | |
4503 | length = read_8_bytes (stash->bfd_ptr, stash->info_ptr + 4, | |
4504 | stash->info_ptr_end); | |
4505 | stash->info_ptr += 12; | |
4506 | } | |
4507 | /* A zero length is the IRIX way of indicating 64-bit offsets, | |
4508 | mostly because the 64-bit length will generally fit in 32 | |
4509 | bits, and the endianness helps. */ | |
4510 | else if (length == 0) | |
4511 | { | |
4512 | offset_size = 8; | |
4513 | length = read_4_bytes (stash->bfd_ptr, stash->info_ptr + 4, | |
4514 | stash->info_ptr_end); | |
4515 | stash->info_ptr += 8; | |
4516 | } | |
4517 | /* In the absence of the hints above, we assume 32-bit DWARF2 | |
4518 | offsets even for targets with 64-bit addresses, because: | |
4519 | a) most of the time these targets will not have generated | |
4520 | more than 2Gb of debug info and so will not need 64-bit | |
4521 | offsets, | |
4522 | and | |
4523 | b) if they do use 64-bit offsets but they are not using | |
4524 | the size hints that are tested for above then they are | |
4525 | not conforming to the DWARF3 standard anyway. */ | |
4526 | else | |
4527 | { | |
4528 | offset_size = 4; | |
4529 | stash->info_ptr += 4; | |
4530 | } | |
4531 | ||
4532 | if (length != 0 | |
4533 | && stash->info_ptr + length <= stash->info_ptr_end | |
4534 | && stash->info_ptr + length > stash->info_ptr) | |
4535 | { | |
4536 | struct comp_unit *each = parse_comp_unit (stash, length, info_ptr_unit, | |
4537 | offset_size); | |
4538 | if (each) | |
4539 | { | |
4540 | if (stash->all_comp_units) | |
4541 | stash->all_comp_units->prev_unit = each; | |
4542 | else | |
4543 | stash->last_comp_unit = each; | |
4544 | ||
4545 | each->next_unit = stash->all_comp_units; | |
4546 | stash->all_comp_units = each; | |
4547 | ||
4548 | stash->info_ptr += length; | |
4549 | ||
4550 | if ((bfd_size_type) (stash->info_ptr - stash->sec_info_ptr) | |
4551 | == stash->sec->size) | |
4552 | { | |
4553 | stash->sec = find_debug_info (stash->bfd_ptr, | |
4554 | stash->debug_sections, | |
4555 | stash->sec); | |
4556 | stash->sec_info_ptr = stash->info_ptr; | |
4557 | } | |
4558 | return each; | |
4559 | } | |
4560 | } | |
4561 | ||
4562 | /* Don't trust any of the DWARF info after a corrupted length or | |
4563 | parse error. */ | |
4564 | stash->info_ptr = stash->info_ptr_end; | |
4565 | return NULL; | |
4566 | } | |
4567 | ||
3eb185c9 TT |
4568 | /* Hash function for an asymbol. */ |
4569 | ||
4570 | static hashval_t | |
4571 | hash_asymbol (const void *sym) | |
4572 | { | |
4573 | const asymbol *asym = sym; | |
4574 | return htab_hash_string (asym->name); | |
4575 | } | |
4576 | ||
4577 | /* Equality function for asymbols. */ | |
4578 | ||
4579 | static int | |
4580 | eq_asymbol (const void *a, const void *b) | |
4581 | { | |
4582 | const asymbol *sa = a; | |
4583 | const asymbol *sb = b; | |
4584 | return strcmp (sa->name, sb->name) == 0; | |
4585 | } | |
4586 | ||
425bd9e1 NC |
4587 | /* Scan the debug information in PINFO looking for a DW_TAG_subprogram |
4588 | abbrev with a DW_AT_low_pc attached to it. Then lookup that same | |
4589 | symbol in SYMBOLS and return the difference between the low_pc and | |
4590 | the symbol's address. Returns 0 if no suitable symbol could be found. */ | |
4591 | ||
4592 | bfd_signed_vma | |
4593 | _bfd_dwarf2_find_symbol_bias (asymbol ** symbols, void ** pinfo) | |
4594 | { | |
4595 | struct dwarf2_debug *stash; | |
4596 | struct comp_unit * unit; | |
3eb185c9 TT |
4597 | htab_t sym_hash; |
4598 | bfd_signed_vma result = 0; | |
4599 | asymbol ** psym; | |
425bd9e1 NC |
4600 | |
4601 | stash = (struct dwarf2_debug *) *pinfo; | |
4602 | ||
219d6836 | 4603 | if (stash == NULL || symbols == NULL) |
425bd9e1 NC |
4604 | return 0; |
4605 | ||
3eb185c9 TT |
4606 | sym_hash = htab_create_alloc (10, hash_asymbol, eq_asymbol, |
4607 | NULL, xcalloc, free); | |
4608 | for (psym = symbols; * psym != NULL; psym++) | |
4609 | { | |
4610 | asymbol * sym = * psym; | |
4611 | ||
4612 | if (sym->flags & BSF_FUNCTION && sym->section != NULL) | |
4613 | { | |
4614 | void **slot = htab_find_slot (sym_hash, sym, INSERT); | |
4615 | *slot = sym; | |
4616 | } | |
4617 | } | |
4618 | ||
425bd9e1 NC |
4619 | for (unit = stash->all_comp_units; unit; unit = unit->next_unit) |
4620 | { | |
4621 | struct funcinfo * func; | |
4622 | ||
c327a44f | 4623 | comp_unit_maybe_decode_line_info (unit, stash); |
425bd9e1 NC |
4624 | |
4625 | for (func = unit->function_table; func != NULL; func = func->prev_func) | |
4626 | if (func->name && func->arange.low) | |
4627 | { | |
3eb185c9 | 4628 | asymbol search, *sym; |
425bd9e1 NC |
4629 | |
4630 | /* FIXME: Do we need to scan the aranges looking for the lowest pc value ? */ | |
4631 | ||
3eb185c9 TT |
4632 | search.name = func->name; |
4633 | sym = htab_find (sym_hash, &search); | |
4634 | if (sym != NULL) | |
425bd9e1 | 4635 | { |
3eb185c9 TT |
4636 | result = ((bfd_signed_vma) func->arange.low) - |
4637 | ((bfd_signed_vma) (sym->value + sym->section->vma)); | |
4638 | goto done; | |
425bd9e1 NC |
4639 | } |
4640 | } | |
4641 | } | |
4642 | ||
3eb185c9 TT |
4643 | done: |
4644 | htab_delete (sym_hash); | |
4645 | return result; | |
425bd9e1 NC |
4646 | } |
4647 | ||
bec42b15 NC |
4648 | /* Find the source code location of SYMBOL. If SYMBOL is NULL |
4649 | then find the nearest source code location corresponding to | |
4650 | the address SECTION + OFFSET. | |
4651 | Returns TRUE if the line is found without error and fills in | |
4652 | FILENAME_PTR and LINENUMBER_PTR. In the case where SYMBOL was | |
4653 | NULL the FUNCTIONNAME_PTR is also filled in. | |
4654 | SYMBOLS contains the symbol table for ABFD. | |
fc28f9aa | 4655 | DEBUG_SECTIONS contains the name of the dwarf debug sections. |
bec42b15 NC |
4656 | field and in the abbreviation offset, or zero to indicate that the |
4657 | default value should be used. */ | |
252b5132 | 4658 | |
fb167eb2 AM |
4659 | bfd_boolean |
4660 | _bfd_dwarf2_find_nearest_line (bfd *abfd, | |
4661 | asymbol **symbols, | |
4662 | asymbol *symbol, | |
4663 | asection *section, | |
4664 | bfd_vma offset, | |
4665 | const char **filename_ptr, | |
4666 | const char **functionname_ptr, | |
4667 | unsigned int *linenumber_ptr, | |
4668 | unsigned int *discriminator_ptr, | |
4669 | const struct dwarf_debug_section *debug_sections, | |
fb167eb2 | 4670 | void **pinfo) |
252b5132 RH |
4671 | { |
4672 | /* Read each compilation unit from the section .debug_info, and check | |
4673 | to see if it contains the address we are searching for. If yes, | |
4674 | lookup the address, and return the line number info. If no, go | |
98591c73 | 4675 | on to the next compilation unit. |
252b5132 RH |
4676 | |
4677 | We keep a list of all the previously read compilation units, and | |
98591c73 | 4678 | a pointer to the next un-read compilation unit. Check the |
a092b084 | 4679 | previously read units before reading more. */ |
1ba54ee0 | 4680 | struct dwarf2_debug *stash; |
a092b084 | 4681 | /* What address are we looking for? */ |
1ba54ee0 | 4682 | bfd_vma addr; |
252b5132 | 4683 | struct comp_unit* each; |
e00e8198 | 4684 | struct funcinfo *function = NULL; |
240d6706 | 4685 | bfd_boolean found = FALSE; |
bec42b15 | 4686 | bfd_boolean do_line; |
d4c32a81 | 4687 | |
2ca7691a TG |
4688 | *filename_ptr = NULL; |
4689 | if (functionname_ptr != NULL) | |
4690 | *functionname_ptr = NULL; | |
4691 | *linenumber_ptr = 0; | |
f725daa8 CC |
4692 | if (discriminator_ptr) |
4693 | *discriminator_ptr = 0; | |
d4c32a81 | 4694 | |
93ee1e36 AM |
4695 | if (! _bfd_dwarf2_slurp_debug_info (abfd, NULL, debug_sections, |
4696 | symbols, pinfo, | |
4697 | (abfd->flags & (EXEC_P | DYNAMIC)) == 0)) | |
2ca7691a | 4698 | return FALSE; |
d4c32a81 | 4699 | |
2ca7691a | 4700 | stash = (struct dwarf2_debug *) *pinfo; |
d4c32a81 | 4701 | |
fb167eb2 | 4702 | do_line = symbol != NULL; |
bec42b15 NC |
4703 | if (do_line) |
4704 | { | |
fb167eb2 | 4705 | BFD_ASSERT (section == NULL && offset == 0 && functionname_ptr == NULL); |
e6f7f6d1 | 4706 | section = bfd_asymbol_section (symbol); |
fb167eb2 | 4707 | addr = symbol->value; |
bec42b15 | 4708 | } |
bec42b15 | 4709 | else |
fb167eb2 AM |
4710 | { |
4711 | BFD_ASSERT (section != NULL && functionname_ptr != NULL); | |
4712 | addr = offset; | |
3239a423 AB |
4713 | |
4714 | /* If we have no SYMBOL but the section we're looking at is not a | |
07d6d2b8 AM |
4715 | code section, then take a look through the list of symbols to see |
4716 | if we have a symbol at the address we're looking for. If we do | |
4717 | then use this to look up line information. This will allow us to | |
4718 | give file and line results for data symbols. We exclude code | |
4719 | symbols here, if we look up a function symbol and then look up the | |
4720 | line information we'll actually return the line number for the | |
4721 | opening '{' rather than the function definition line. This is | |
4722 | because looking up by symbol uses the line table, in which the | |
4723 | first line for a function is usually the opening '{', while | |
4724 | looking up the function by section + offset uses the | |
4725 | DW_AT_decl_line from the function DW_TAG_subprogram for the line, | |
4726 | which will be the line of the function name. */ | |
97e83a10 | 4727 | if (symbols != NULL && (section->flags & SEC_CODE) == 0) |
3239a423 AB |
4728 | { |
4729 | asymbol **tmp; | |
4730 | ||
4731 | for (tmp = symbols; (*tmp) != NULL; ++tmp) | |
4732 | if ((*tmp)->the_bfd == abfd | |
4733 | && (*tmp)->section == section | |
4734 | && (*tmp)->value == offset | |
4735 | && ((*tmp)->flags & BSF_SECTION_SYM) == 0) | |
4736 | { | |
4737 | symbol = *tmp; | |
4738 | do_line = TRUE; | |
07d6d2b8 AM |
4739 | /* For local symbols, keep going in the hope we find a |
4740 | global. */ | |
4741 | if ((symbol->flags & BSF_GLOBAL) != 0) | |
4742 | break; | |
3239a423 AB |
4743 | } |
4744 | } | |
fb167eb2 | 4745 | } |
bec42b15 | 4746 | |
1ba54ee0 | 4747 | if (section->output_section) |
6dd55cb7 | 4748 | addr += section->output_section->vma + section->output_offset; |
1ba54ee0 | 4749 | else |
6dd55cb7 | 4750 | addr += section->vma; |
a092b084 | 4751 | |
98591c73 | 4752 | /* A null info_ptr indicates that there is no dwarf2 info |
a092b084 | 4753 | (or that an error occured while setting up the stash). */ |
252b5132 | 4754 | if (! stash->info_ptr) |
2ca7691a | 4755 | return FALSE; |
252b5132 | 4756 | |
4ab527b0 FF |
4757 | stash->inliner_chain = NULL; |
4758 | ||
a092b084 | 4759 | /* Check the previously read comp. units first. */ |
bd210d54 NC |
4760 | if (do_line) |
4761 | { | |
4762 | /* The info hash tables use quite a bit of memory. We may not want to | |
4763 | always use them. We use some heuristics to decide if and when to | |
4764 | turn it on. */ | |
4765 | if (stash->info_hash_status == STASH_INFO_HASH_OFF) | |
4766 | stash_maybe_enable_info_hash_tables (abfd, stash); | |
4767 | ||
4768 | /* Keep info hash table up to date if they are available. Note that we | |
089e3718 | 4769 | may disable the hash tables if there is any error duing update. */ |
bd210d54 NC |
4770 | if (stash->info_hash_status == STASH_INFO_HASH_ON) |
4771 | stash_maybe_update_info_hash_tables (stash); | |
4772 | ||
4773 | if (stash->info_hash_status == STASH_INFO_HASH_ON) | |
4774 | { | |
4775 | found = stash_find_line_fast (stash, symbol, addr, filename_ptr, | |
4776 | linenumber_ptr); | |
4777 | if (found) | |
4778 | goto done; | |
4779 | } | |
0d161102 | 4780 | else |
bd210d54 NC |
4781 | { |
4782 | /* Check the previously read comp. units first. */ | |
4783 | for (each = stash->all_comp_units; each; each = each->next_unit) | |
4784 | if ((symbol->flags & BSF_FUNCTION) == 0 | |
a2a50954 | 4785 | || each->arange.high == 0 |
bd210d54 NC |
4786 | || comp_unit_contains_address (each, addr)) |
4787 | { | |
4788 | found = comp_unit_find_line (each, symbol, addr, filename_ptr, | |
4789 | linenumber_ptr, stash); | |
4790 | if (found) | |
4791 | goto done; | |
4792 | } | |
4793 | } | |
4794 | } | |
4795 | else | |
4796 | { | |
240d6706 NC |
4797 | bfd_vma min_range = (bfd_vma) -1; |
4798 | const char * local_filename = NULL; | |
e00e8198 | 4799 | struct funcinfo *local_function = NULL; |
240d6706 NC |
4800 | unsigned int local_linenumber = 0; |
4801 | unsigned int local_discriminator = 0; | |
96691246 | 4802 | |
709d67f1 AM |
4803 | for (each = stash->all_comp_units; each; each = each->next_unit) |
4804 | { | |
240d6706 NC |
4805 | bfd_vma range = (bfd_vma) -1; |
4806 | ||
a2a50954 AM |
4807 | found = ((each->arange.high == 0 |
4808 | || comp_unit_contains_address (each, addr)) | |
240d6706 NC |
4809 | && (range = comp_unit_find_nearest_line (each, addr, |
4810 | & local_filename, | |
e00e8198 | 4811 | & local_function, |
240d6706 NC |
4812 | & local_linenumber, |
4813 | & local_discriminator, | |
4814 | stash)) != 0); | |
709d67f1 | 4815 | if (found) |
240d6706 NC |
4816 | { |
4817 | /* PRs 15935 15994: Bogus debug information may have provided us | |
4818 | with an erroneous match. We attempt to counter this by | |
4819 | selecting the match that has the smallest address range | |
4820 | associated with it. (We are assuming that corrupt debug info | |
4821 | will tend to result in extra large address ranges rather than | |
4822 | extra small ranges). | |
4823 | ||
4824 | This does mean that we scan through all of the CUs associated | |
4825 | with the bfd each time this function is called. But this does | |
4826 | have the benefit of producing consistent results every time the | |
4827 | function is called. */ | |
4828 | if (range <= min_range) | |
4829 | { | |
4830 | if (filename_ptr && local_filename) | |
4831 | * filename_ptr = local_filename; | |
e00e8198 AM |
4832 | if (local_function) |
4833 | function = local_function; | |
240d6706 NC |
4834 | if (discriminator_ptr && local_discriminator) |
4835 | * discriminator_ptr = local_discriminator; | |
4836 | if (local_linenumber) | |
4837 | * linenumber_ptr = local_linenumber; | |
4838 | min_range = range; | |
4839 | } | |
4840 | } | |
4841 | } | |
4842 | ||
4843 | if (* linenumber_ptr) | |
4844 | { | |
4845 | found = TRUE; | |
4846 | goto done; | |
709d67f1 | 4847 | } |
5420f73d L |
4848 | } |
4849 | ||
5420f73d | 4850 | /* Read each remaining comp. units checking each as they are read. */ |
dfc19da6 | 4851 | while ((each = stash_comp_unit (stash)) != NULL) |
5420f73d | 4852 | { |
dfc19da6 AM |
4853 | /* DW_AT_low_pc and DW_AT_high_pc are optional for |
4854 | compilation units. If we don't have them (i.e., | |
4855 | unit->high == 0), we need to consult the line info table | |
4856 | to see if a compilation unit contains the given | |
4857 | address. */ | |
4858 | if (do_line) | |
4859 | found = (((symbol->flags & BSF_FUNCTION) == 0 | |
4860 | || each->arange.high == 0 | |
4861 | || comp_unit_contains_address (each, addr)) | |
4862 | && comp_unit_find_line (each, symbol, addr, | |
4863 | filename_ptr, | |
4864 | linenumber_ptr, | |
4865 | stash)); | |
9defd221 | 4866 | else |
dfc19da6 AM |
4867 | found = ((each->arange.high == 0 |
4868 | || comp_unit_contains_address (each, addr)) | |
4869 | && comp_unit_find_nearest_line (each, addr, | |
4870 | filename_ptr, | |
4871 | &function, | |
4872 | linenumber_ptr, | |
4873 | discriminator_ptr, | |
4874 | stash) != 0); | |
4875 | ||
4876 | if (found) | |
4877 | break; | |
5420f73d L |
4878 | } |
4879 | ||
a2a50954 | 4880 | done: |
e00e8198 AM |
4881 | if (function) |
4882 | { | |
923b198a | 4883 | if (!function->is_linkage) |
e00e8198 | 4884 | { |
923b198a AM |
4885 | asymbol *fun; |
4886 | bfd_vma sec_vma; | |
4887 | ||
4888 | fun = _bfd_elf_find_function (abfd, symbols, section, offset, | |
4889 | *filename_ptr ? NULL : filename_ptr, | |
4890 | functionname_ptr); | |
4891 | sec_vma = section->vma; | |
4892 | if (section->output_section != NULL) | |
4893 | sec_vma = section->output_section->vma + section->output_offset; | |
4894 | if (fun != NULL | |
4895 | && fun->value + sec_vma == function->arange.low) | |
4896 | function->name = *functionname_ptr; | |
4897 | /* Even if we didn't find a linkage name, say that we have | |
4898 | to stop a repeated search of symbols. */ | |
e00e8198 AM |
4899 | function->is_linkage = TRUE; |
4900 | } | |
923b198a | 4901 | *functionname_ptr = function->name; |
e00e8198 | 4902 | } |
d4c32a81 L |
4903 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
4904 | unset_sections (stash); | |
4905 | ||
4906 | return found; | |
5420f73d L |
4907 | } |
4908 | ||
4ab527b0 FF |
4909 | bfd_boolean |
4910 | _bfd_dwarf2_find_inliner_info (bfd *abfd ATTRIBUTE_UNUSED, | |
4911 | const char **filename_ptr, | |
4912 | const char **functionname_ptr, | |
4913 | unsigned int *linenumber_ptr, | |
4914 | void **pinfo) | |
4915 | { | |
4916 | struct dwarf2_debug *stash; | |
4917 | ||
a50b1753 | 4918 | stash = (struct dwarf2_debug *) *pinfo; |
4ab527b0 FF |
4919 | if (stash) |
4920 | { | |
4921 | struct funcinfo *func = stash->inliner_chain; | |
bec42b15 | 4922 | |
4ab527b0 FF |
4923 | if (func && func->caller_func) |
4924 | { | |
4925 | *filename_ptr = func->caller_file; | |
4926 | *functionname_ptr = func->caller_func->name; | |
4927 | *linenumber_ptr = func->caller_line; | |
4928 | stash->inliner_chain = func->caller_func; | |
bec42b15 | 4929 | return TRUE; |
4ab527b0 FF |
4930 | } |
4931 | } | |
4932 | ||
bec42b15 | 4933 | return FALSE; |
4ab527b0 FF |
4934 | } |
4935 | ||
35330cce | 4936 | void |
d9071b0c | 4937 | _bfd_dwarf2_cleanup_debug_info (bfd *abfd, void **pinfo) |
35330cce | 4938 | { |
5bb3703f | 4939 | struct dwarf2_debug *stash = (struct dwarf2_debug *) *pinfo; |
35330cce | 4940 | struct comp_unit *each; |
35330cce | 4941 | |
d9071b0c | 4942 | if (abfd == NULL || stash == NULL) |
35330cce NC |
4943 | return; |
4944 | ||
4945 | for (each = stash->all_comp_units; each; each = each->next_unit) | |
4946 | { | |
34b5e0b2 | 4947 | struct abbrev_info **abbrevs = each->abbrevs; |
90b5b1a5 NC |
4948 | struct funcinfo *function_table = each->function_table; |
4949 | struct varinfo *variable_table = each->variable_table; | |
34b5e0b2 | 4950 | size_t i; |
35330cce | 4951 | |
34b5e0b2 | 4952 | for (i = 0; i < ABBREV_HASH_SIZE; i++) |
d8d1c398 | 4953 | { |
34b5e0b2 | 4954 | struct abbrev_info *abbrev = abbrevs[i]; |
35330cce | 4955 | |
34b5e0b2 | 4956 | while (abbrev) |
d8d1c398 | 4957 | { |
34b5e0b2 NC |
4958 | free (abbrev->attrs); |
4959 | abbrev = abbrev->next; | |
d8d1c398 AM |
4960 | } |
4961 | } | |
35330cce NC |
4962 | |
4963 | if (each->line_table) | |
d8d1c398 | 4964 | { |
34b5e0b2 NC |
4965 | free (each->line_table->dirs); |
4966 | free (each->line_table->files); | |
d8d1c398 | 4967 | } |
90b5b1a5 NC |
4968 | |
4969 | while (function_table) | |
4970 | { | |
4971 | if (function_table->file) | |
4972 | { | |
4973 | free (function_table->file); | |
4974 | function_table->file = NULL; | |
4975 | } | |
4976 | ||
4977 | if (function_table->caller_file) | |
4978 | { | |
4979 | free (function_table->caller_file); | |
4980 | function_table->caller_file = NULL; | |
4981 | } | |
4982 | function_table = function_table->prev_func; | |
4983 | } | |
4984 | ||
089e3718 IT |
4985 | if (each->lookup_funcinfo_table) |
4986 | { | |
4987 | free (each->lookup_funcinfo_table); | |
4988 | each->lookup_funcinfo_table = NULL; | |
4989 | } | |
4990 | ||
90b5b1a5 NC |
4991 | while (variable_table) |
4992 | { | |
4993 | if (variable_table->file) | |
4994 | { | |
4995 | free (variable_table->file); | |
4996 | variable_table->file = NULL; | |
4997 | } | |
4998 | ||
4999 | variable_table = variable_table->prev_var; | |
5000 | } | |
35330cce NC |
5001 | } |
5002 | ||
b55ec8b6 AM |
5003 | if (stash->funcinfo_hash_table) |
5004 | bfd_hash_table_free (&stash->funcinfo_hash_table->base); | |
5005 | if (stash->varinfo_hash_table) | |
5006 | bfd_hash_table_free (&stash->varinfo_hash_table->base); | |
5d0900eb AM |
5007 | if (stash->dwarf_abbrev_buffer) |
5008 | free (stash->dwarf_abbrev_buffer); | |
5009 | if (stash->dwarf_line_buffer) | |
5010 | free (stash->dwarf_line_buffer); | |
5011 | if (stash->dwarf_str_buffer) | |
5012 | free (stash->dwarf_str_buffer); | |
0041f7df JK |
5013 | if (stash->dwarf_line_str_buffer) |
5014 | free (stash->dwarf_line_str_buffer); | |
5d0900eb AM |
5015 | if (stash->dwarf_ranges_buffer) |
5016 | free (stash->dwarf_ranges_buffer); | |
5017 | if (stash->info_ptr_memory) | |
5018 | free (stash->info_ptr_memory); | |
1c37913d AM |
5019 | if (stash->close_on_cleanup) |
5020 | bfd_close (stash->bfd_ptr); | |
95e34fb4 NC |
5021 | if (stash->alt_dwarf_str_buffer) |
5022 | free (stash->alt_dwarf_str_buffer); | |
5023 | if (stash->alt_dwarf_info_buffer) | |
5024 | free (stash->alt_dwarf_info_buffer); | |
cd0449ab AM |
5025 | if (stash->sec_vma) |
5026 | free (stash->sec_vma); | |
93ee1e36 AM |
5027 | if (stash->adjusted_sections) |
5028 | free (stash->adjusted_sections); | |
95e34fb4 NC |
5029 | if (stash->alt_bfd_ptr) |
5030 | bfd_close (stash->alt_bfd_ptr); | |
35330cce | 5031 | } |
e00e8198 AM |
5032 | |
5033 | /* Find the function to a particular section and offset, | |
5034 | for error reporting. */ | |
5035 | ||
923b198a | 5036 | asymbol * |
e00e8198 AM |
5037 | _bfd_elf_find_function (bfd *abfd, |
5038 | asymbol **symbols, | |
5039 | asection *section, | |
5040 | bfd_vma offset, | |
5041 | const char **filename_ptr, | |
5042 | const char **functionname_ptr) | |
5043 | { | |
5044 | struct elf_find_function_cache | |
5045 | { | |
5046 | asection *last_section; | |
5047 | asymbol *func; | |
5048 | const char *filename; | |
5049 | bfd_size_type func_size; | |
5050 | } *cache; | |
5051 | ||
5052 | if (symbols == NULL) | |
923b198a | 5053 | return NULL; |
e00e8198 AM |
5054 | |
5055 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) | |
923b198a | 5056 | return NULL; |
e00e8198 AM |
5057 | |
5058 | cache = elf_tdata (abfd)->elf_find_function_cache; | |
5059 | if (cache == NULL) | |
5060 | { | |
5061 | cache = bfd_zalloc (abfd, sizeof (*cache)); | |
5062 | elf_tdata (abfd)->elf_find_function_cache = cache; | |
5063 | if (cache == NULL) | |
923b198a | 5064 | return NULL; |
e00e8198 AM |
5065 | } |
5066 | if (cache->last_section != section | |
5067 | || cache->func == NULL | |
5068 | || offset < cache->func->value | |
5069 | || offset >= cache->func->value + cache->func_size) | |
5070 | { | |
5071 | asymbol *file; | |
5072 | bfd_vma low_func; | |
5073 | asymbol **p; | |
5074 | /* ??? Given multiple file symbols, it is impossible to reliably | |
5075 | choose the right file name for global symbols. File symbols are | |
5076 | local symbols, and thus all file symbols must sort before any | |
5077 | global symbols. The ELF spec may be interpreted to say that a | |
5078 | file symbol must sort before other local symbols, but currently | |
5079 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
5080 | make a better choice of file name for local symbols by ignoring | |
5081 | file symbols appearing after a given local symbol. */ | |
5082 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
5083 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
5084 | ||
5085 | file = NULL; | |
5086 | low_func = 0; | |
5087 | state = nothing_seen; | |
5088 | cache->filename = NULL; | |
5089 | cache->func = NULL; | |
5090 | cache->func_size = 0; | |
5091 | cache->last_section = section; | |
5092 | ||
5093 | for (p = symbols; *p != NULL; p++) | |
5094 | { | |
5095 | asymbol *sym = *p; | |
5096 | bfd_vma code_off; | |
5097 | bfd_size_type size; | |
5098 | ||
5099 | if ((sym->flags & BSF_FILE) != 0) | |
5100 | { | |
5101 | file = sym; | |
5102 | if (state == symbol_seen) | |
5103 | state = file_after_symbol_seen; | |
5104 | continue; | |
5105 | } | |
5106 | ||
5107 | size = bed->maybe_function_sym (sym, section, &code_off); | |
5108 | if (size != 0 | |
5109 | && code_off <= offset | |
5110 | && (code_off > low_func | |
5111 | || (code_off == low_func | |
5112 | && size > cache->func_size))) | |
5113 | { | |
5114 | cache->func = sym; | |
5115 | cache->func_size = size; | |
5116 | cache->filename = NULL; | |
5117 | low_func = code_off; | |
5118 | if (file != NULL | |
5119 | && ((sym->flags & BSF_LOCAL) != 0 | |
5120 | || state != file_after_symbol_seen)) | |
5121 | cache->filename = bfd_asymbol_name (file); | |
5122 | } | |
5123 | if (state == nothing_seen) | |
5124 | state = symbol_seen; | |
5125 | } | |
5126 | } | |
5127 | ||
5128 | if (cache->func == NULL) | |
923b198a | 5129 | return NULL; |
e00e8198 AM |
5130 | |
5131 | if (filename_ptr) | |
5132 | *filename_ptr = cache->filename; | |
5133 | if (functionname_ptr) | |
5134 | *functionname_ptr = bfd_asymbol_name (cache->func); | |
5135 | ||
923b198a | 5136 | return cache->func; |
e00e8198 | 5137 | } |