Commit | Line | Data |
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252b5132 | 1 | /* DWARF 2 support. |
250d07de | 2 | Copyright (C) 1994-2021 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 | ||
99b06c60 | 85 | struct dwarf2_debug_file |
a092b084 | 86 | { |
99b06c60 AM |
87 | /* The actual bfd from which debug info was loaded. Might be |
88 | different to orig_bfd because of gnu_debuglink sections. */ | |
89 | bfd *bfd_ptr; | |
bd210d54 | 90 | |
99b06c60 AM |
91 | /* Pointer to the symbol table. */ |
92 | asymbol **syms; | |
fc28f9aa | 93 | |
99b06c60 | 94 | /* The current info pointer for the .debug_info section being parsed. */ |
f075ee0c | 95 | bfd_byte *info_ptr; |
252b5132 | 96 | |
1b8e1271 | 97 | /* A pointer to the memory block allocated for .debug_info sections. */ |
99b06c60 | 98 | bfd_byte *dwarf_info_buffer; |
aaf30c25 | 99 | |
99b06c60 AM |
100 | /* Length of the loaded .debug_info sections. */ |
101 | bfd_size_type dwarf_info_size; | |
f2363ce5 | 102 | |
a092b084 | 103 | /* Pointer to the .debug_abbrev section loaded into memory. */ |
f075ee0c | 104 | bfd_byte *dwarf_abbrev_buffer; |
252b5132 | 105 | |
a092b084 | 106 | /* Length of the loaded .debug_abbrev section. */ |
3076cd1f | 107 | bfd_size_type dwarf_abbrev_size; |
69dd2e2d RH |
108 | |
109 | /* Buffer for decode_line_info. */ | |
f075ee0c | 110 | bfd_byte *dwarf_line_buffer; |
ccdb16fc JW |
111 | |
112 | /* Length of the loaded .debug_line section. */ | |
3076cd1f | 113 | bfd_size_type dwarf_line_size; |
d03ba2a1 JJ |
114 | |
115 | /* Pointer to the .debug_str section loaded into memory. */ | |
f075ee0c | 116 | bfd_byte *dwarf_str_buffer; |
d03ba2a1 JJ |
117 | |
118 | /* Length of the loaded .debug_str section. */ | |
3076cd1f | 119 | bfd_size_type dwarf_str_size; |
a13afe8e | 120 | |
0041f7df JK |
121 | /* Pointer to the .debug_line_str section loaded into memory. */ |
122 | bfd_byte *dwarf_line_str_buffer; | |
123 | ||
124 | /* Length of the loaded .debug_line_str section. */ | |
125 | bfd_size_type dwarf_line_str_size; | |
126 | ||
089e3718 | 127 | /* Pointer to the .debug_ranges section loaded into memory. */ |
a13afe8e FF |
128 | bfd_byte *dwarf_ranges_buffer; |
129 | ||
089e3718 | 130 | /* Length of the loaded .debug_ranges section. */ |
3076cd1f | 131 | bfd_size_type dwarf_ranges_size; |
4ab527b0 | 132 | |
c3757b58 MW |
133 | /* Pointer to the .debug_rnglists section loaded into memory. */ |
134 | bfd_byte *dwarf_rnglists_buffer; | |
135 | ||
136 | /* Length of the loaded .debug_rnglists section. */ | |
137 | bfd_size_type dwarf_rnglists_size; | |
138 | ||
99b06c60 AM |
139 | /* A list of all previously read comp_units. */ |
140 | struct comp_unit *all_comp_units; | |
141 | ||
142 | /* Last comp unit in list above. */ | |
143 | struct comp_unit *last_comp_unit; | |
e63ef095 AM |
144 | |
145 | /* Line table at line_offset zero. */ | |
146 | struct line_info_table *line_table; | |
147 | ||
148 | /* Hash table to map offsets to decoded abbrevs. */ | |
149 | htab_t abbrev_offsets; | |
99b06c60 AM |
150 | }; |
151 | ||
152 | struct dwarf2_debug | |
153 | { | |
154 | /* Names of the debug sections. */ | |
155 | const struct dwarf_debug_section *debug_sections; | |
156 | ||
157 | /* Per-file stuff. */ | |
158 | struct dwarf2_debug_file f, alt; | |
159 | ||
160 | /* Pointer to the original bfd for which debug was loaded. This is what | |
161 | we use to compare and so check that the cached debug data is still | |
162 | valid - it saves having to possibly dereference the gnu_debuglink each | |
163 | time. */ | |
164 | bfd *orig_bfd; | |
165 | ||
4ab527b0 FF |
166 | /* If the most recent call to bfd_find_nearest_line was given an |
167 | address in an inlined function, preserve a pointer into the | |
168 | calling chain for subsequent calls to bfd_find_inliner_info to | |
089e3718 | 169 | use. */ |
4ab527b0 | 170 | struct funcinfo *inliner_chain; |
d4c32a81 | 171 | |
cd0449ab AM |
172 | /* Section VMAs at the time the stash was built. */ |
173 | bfd_vma *sec_vma; | |
d7f848c3 NC |
174 | /* Number of sections in the SEC_VMA table. */ |
175 | unsigned int sec_vma_count; | |
cd0449ab | 176 | |
5609a71e | 177 | /* Number of sections whose VMA we must adjust. */ |
93ee1e36 | 178 | int adjusted_section_count; |
d4c32a81 | 179 | |
5609a71e DJ |
180 | /* Array of sections with adjusted VMA. */ |
181 | struct adjusted_section *adjusted_sections; | |
bd210d54 NC |
182 | |
183 | /* Number of times find_line is called. This is used in | |
184 | the heuristic for enabling the info hash tables. */ | |
185 | int info_hash_count; | |
186 | ||
187 | #define STASH_INFO_HASH_TRIGGER 100 | |
188 | ||
189 | /* Hash table mapping symbol names to function infos. */ | |
190 | struct info_hash_table *funcinfo_hash_table; | |
191 | ||
192 | /* Hash table mapping symbol names to variable infos. */ | |
193 | struct info_hash_table *varinfo_hash_table; | |
194 | ||
195 | /* Head of comp_unit list in the last hash table update. */ | |
196 | struct comp_unit *hash_units_head; | |
197 | ||
198 | /* Status of info hash. */ | |
199 | int info_hash_status; | |
07d6d2b8 AM |
200 | #define STASH_INFO_HASH_OFF 0 |
201 | #define STASH_INFO_HASH_ON 1 | |
bd210d54 | 202 | #define STASH_INFO_HASH_DISABLED 2 |
1c37913d AM |
203 | |
204 | /* True if we opened bfd_ptr. */ | |
205 | bfd_boolean close_on_cleanup; | |
252b5132 RH |
206 | }; |
207 | ||
a092b084 NC |
208 | struct arange |
209 | { | |
f623be2b RH |
210 | struct arange *next; |
211 | bfd_vma low; | |
212 | bfd_vma high; | |
213 | }; | |
252b5132 | 214 | |
252b5132 | 215 | /* A minimal decoding of DWARF2 compilation units. We only decode |
a092b084 | 216 | what's needed to get to the line number information. */ |
252b5132 | 217 | |
a092b084 NC |
218 | struct comp_unit |
219 | { | |
220 | /* Chain the previously read compilation units. */ | |
f075ee0c | 221 | struct comp_unit *next_unit; |
252b5132 | 222 | |
bd210d54 NC |
223 | /* Likewise, chain the compilation unit read after this one. |
224 | The comp units are stored in reversed reading order. */ | |
225 | struct comp_unit *prev_unit; | |
226 | ||
2ae727ad | 227 | /* Keep the bfd convenient (for memory allocation). */ |
f075ee0c | 228 | bfd *abfd; |
252b5132 | 229 | |
709d67f1 AM |
230 | /* The lowest and highest addresses contained in this compilation |
231 | unit as specified in the compilation unit header. */ | |
232 | struct arange arange; | |
252b5132 | 233 | |
a092b084 | 234 | /* The DW_AT_name attribute (for error messages). */ |
f075ee0c | 235 | char *name; |
252b5132 | 236 | |
a092b084 | 237 | /* The abbrev hash table. */ |
f075ee0c | 238 | struct abbrev_info **abbrevs; |
252b5132 | 239 | |
e00e8198 AM |
240 | /* DW_AT_language. */ |
241 | int lang; | |
242 | ||
a092b084 | 243 | /* Note that an error was found by comp_unit_find_nearest_line. */ |
252b5132 RH |
244 | int error; |
245 | ||
a092b084 | 246 | /* The DW_AT_comp_dir attribute. */ |
f075ee0c | 247 | char *comp_dir; |
252b5132 | 248 | |
b34976b6 | 249 | /* TRUE if there is a line number table associated with this comp. unit. */ |
252b5132 | 250 | int stmtlist; |
98591c73 | 251 | |
c0c28ab8 L |
252 | /* Pointer to the current comp_unit so that we can find a given entry |
253 | by its reference. */ | |
f075ee0c | 254 | bfd_byte *info_ptr_unit; |
c0c28ab8 | 255 | |
a092b084 | 256 | /* The offset into .debug_line of the line number table. */ |
252b5132 RH |
257 | unsigned long line_offset; |
258 | ||
a092b084 | 259 | /* Pointer to the first child die for the comp unit. */ |
f075ee0c | 260 | bfd_byte *first_child_die_ptr; |
252b5132 | 261 | |
a092b084 | 262 | /* The end of the comp unit. */ |
f075ee0c | 263 | bfd_byte *end_ptr; |
252b5132 | 264 | |
a092b084 | 265 | /* The decoded line number, NULL if not yet decoded. */ |
f075ee0c | 266 | struct line_info_table *line_table; |
252b5132 | 267 | |
a092b084 | 268 | /* A list of the functions found in this comp. unit. */ |
f075ee0c | 269 | struct funcinfo *function_table; |
252b5132 | 270 | |
089e3718 IT |
271 | /* A table of function information references searchable by address. */ |
272 | struct lookup_funcinfo *lookup_funcinfo_table; | |
273 | ||
274 | /* Number of functions in the function_table and sorted_function_table. */ | |
275 | bfd_size_type number_of_functions; | |
276 | ||
5420f73d L |
277 | /* A list of the variables found in this comp. unit. */ |
278 | struct varinfo *variable_table; | |
279 | ||
99b06c60 | 280 | /* Pointers to dwarf2_debug structures. */ |
d03ba2a1 | 281 | struct dwarf2_debug *stash; |
99b06c60 | 282 | struct dwarf2_debug_file *file; |
d03ba2a1 | 283 | |
5609a71e DJ |
284 | /* DWARF format version for this unit - from unit header. */ |
285 | int version; | |
286 | ||
a092b084 | 287 | /* Address size for this unit - from unit header. */ |
252b5132 | 288 | unsigned char addr_size; |
d03ba2a1 JJ |
289 | |
290 | /* Offset size for this unit - from unit header. */ | |
291 | unsigned char offset_size; | |
a13afe8e FF |
292 | |
293 | /* Base address for this unit - from DW_AT_low_pc attribute of | |
294 | DW_TAG_compile_unit DIE */ | |
295 | bfd_vma base_address; | |
bd210d54 NC |
296 | |
297 | /* TRUE if symbols are cached in hash table for faster lookup by name. */ | |
298 | bfd_boolean cached; | |
252b5132 RH |
299 | }; |
300 | ||
a7b97311 AM |
301 | /* This data structure holds the information of an abbrev. */ |
302 | struct abbrev_info | |
303 | { | |
f3a08f77 NC |
304 | unsigned int number; /* Number identifying abbrev. */ |
305 | enum dwarf_tag tag; /* DWARF tag. */ | |
306 | bfd_boolean has_children; /* TRUE if the abbrev has children. */ | |
307 | unsigned int num_attrs; /* Number of attributes. */ | |
308 | struct attr_abbrev * attrs; /* An array of attribute descriptions. */ | |
309 | struct abbrev_info * next; /* Next in chain. */ | |
a7b97311 AM |
310 | }; |
311 | ||
312 | struct attr_abbrev | |
313 | { | |
314 | enum dwarf_attribute name; | |
315 | enum dwarf_form form; | |
0041f7df | 316 | bfd_vma implicit_const; |
a7b97311 AM |
317 | }; |
318 | ||
4a114e3e L |
319 | /* Map of uncompressed DWARF debug section name to compressed one. It |
320 | is terminated by NULL uncompressed_name. */ | |
321 | ||
e4c93b56 | 322 | const struct dwarf_debug_section dwarf_debug_sections[] = |
4a114e3e L |
323 | { |
324 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
325 | { ".debug_aranges", ".zdebug_aranges" }, | |
326 | { ".debug_frame", ".zdebug_frame" }, | |
327 | { ".debug_info", ".zdebug_info" }, | |
95e34fb4 | 328 | { ".debug_info", ".zdebug_info" }, |
4a114e3e L |
329 | { ".debug_line", ".zdebug_line" }, |
330 | { ".debug_loc", ".zdebug_loc" }, | |
331 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
4ccf1e31 | 332 | { ".debug_macro", ".zdebug_macro" }, |
4a114e3e L |
333 | { ".debug_pubnames", ".zdebug_pubnames" }, |
334 | { ".debug_pubtypes", ".zdebug_pubtypes" }, | |
335 | { ".debug_ranges", ".zdebug_ranges" }, | |
c3757b58 | 336 | { ".debug_rnglists", ".zdebug_rnglist" }, |
4a114e3e L |
337 | { ".debug_static_func", ".zdebug_static_func" }, |
338 | { ".debug_static_vars", ".zdebug_static_vars" }, | |
339 | { ".debug_str", ".zdebug_str", }, | |
95e34fb4 | 340 | { ".debug_str", ".zdebug_str", }, |
0041f7df | 341 | { ".debug_line_str", ".zdebug_line_str", }, |
4a114e3e L |
342 | { ".debug_types", ".zdebug_types" }, |
343 | /* GNU DWARF 1 extensions */ | |
344 | { ".debug_sfnames", ".zdebug_sfnames" }, | |
345 | { ".debug_srcinfo", ".zebug_srcinfo" }, | |
346 | /* SGI/MIPS DWARF 2 extensions */ | |
347 | { ".debug_funcnames", ".zdebug_funcnames" }, | |
348 | { ".debug_typenames", ".zdebug_typenames" }, | |
349 | { ".debug_varnames", ".zdebug_varnames" }, | |
350 | { ".debug_weaknames", ".zdebug_weaknames" }, | |
351 | { NULL, NULL }, | |
352 | }; | |
353 | ||
67ce483b | 354 | /* NB/ Numbers in this enum must match up with indices |
95e34fb4 | 355 | into the dwarf_debug_sections[] array above. */ |
4a114e3e L |
356 | enum dwarf_debug_section_enum |
357 | { | |
358 | debug_abbrev = 0, | |
359 | debug_aranges, | |
360 | debug_frame, | |
361 | debug_info, | |
95e34fb4 | 362 | debug_info_alt, |
4a114e3e L |
363 | debug_line, |
364 | debug_loc, | |
365 | debug_macinfo, | |
4ccf1e31 | 366 | debug_macro, |
4a114e3e L |
367 | debug_pubnames, |
368 | debug_pubtypes, | |
369 | debug_ranges, | |
c3757b58 | 370 | debug_rnglists, |
4a114e3e L |
371 | debug_static_func, |
372 | debug_static_vars, | |
373 | debug_str, | |
95e34fb4 | 374 | debug_str_alt, |
0041f7df | 375 | debug_line_str, |
4a114e3e L |
376 | debug_types, |
377 | debug_sfnames, | |
378 | debug_srcinfo, | |
379 | debug_funcnames, | |
380 | debug_typenames, | |
381 | debug_varnames, | |
0041f7df JK |
382 | debug_weaknames, |
383 | debug_max | |
4a114e3e L |
384 | }; |
385 | ||
0041f7df JK |
386 | /* A static assertion. */ |
387 | extern int dwarf_debug_section_assert[ARRAY_SIZE (dwarf_debug_sections) | |
388 | == debug_max + 1 ? 1 : -1]; | |
389 | ||
a7b97311 AM |
390 | #ifndef ABBREV_HASH_SIZE |
391 | #define ABBREV_HASH_SIZE 121 | |
392 | #endif | |
393 | #ifndef ATTR_ALLOC_CHUNK | |
394 | #define ATTR_ALLOC_CHUNK 4 | |
395 | #endif | |
396 | ||
bd210d54 NC |
397 | /* Variable and function hash tables. This is used to speed up look-up |
398 | in lookup_symbol_in_var_table() and lookup_symbol_in_function_table(). | |
399 | In order to share code between variable and function infos, we use | |
400 | a list of untyped pointer for all variable/function info associated with | |
401 | a symbol. We waste a bit of memory for list with one node but that | |
402 | simplifies the code. */ | |
403 | ||
404 | struct info_list_node | |
405 | { | |
406 | struct info_list_node *next; | |
407 | void *info; | |
408 | }; | |
409 | ||
410 | /* Info hash entry. */ | |
411 | struct info_hash_entry | |
412 | { | |
413 | struct bfd_hash_entry root; | |
414 | struct info_list_node *head; | |
415 | }; | |
416 | ||
417 | struct info_hash_table | |
418 | { | |
419 | struct bfd_hash_table base; | |
420 | }; | |
421 | ||
089e3718 | 422 | /* Function to create a new entry in info hash table. */ |
bd210d54 NC |
423 | |
424 | static struct bfd_hash_entry * | |
425 | info_hash_table_newfunc (struct bfd_hash_entry *entry, | |
426 | struct bfd_hash_table *table, | |
427 | const char *string) | |
428 | { | |
429 | struct info_hash_entry *ret = (struct info_hash_entry *) entry; | |
430 | ||
431 | /* Allocate the structure if it has not already been allocated by a | |
432 | derived class. */ | |
433 | if (ret == NULL) | |
434 | { | |
a50b1753 | 435 | ret = (struct info_hash_entry *) bfd_hash_allocate (table, |
93ee1e36 | 436 | sizeof (* ret)); |
bd210d54 NC |
437 | if (ret == NULL) |
438 | return NULL; | |
439 | } | |
440 | ||
441 | /* Call the allocation method of the base class. */ | |
442 | ret = ((struct info_hash_entry *) | |
2d47a72c | 443 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); |
bd210d54 NC |
444 | |
445 | /* Initialize the local fields here. */ | |
446 | if (ret) | |
447 | ret->head = NULL; | |
448 | ||
449 | return (struct bfd_hash_entry *) ret; | |
450 | } | |
451 | ||
452 | /* Function to create a new info hash table. It returns a pointer to the | |
453 | newly created table or NULL if there is any error. We need abfd | |
454 | solely for memory allocation. */ | |
455 | ||
456 | static struct info_hash_table * | |
457 | create_info_hash_table (bfd *abfd) | |
458 | { | |
459 | struct info_hash_table *hash_table; | |
460 | ||
a2a50954 AM |
461 | hash_table = ((struct info_hash_table *) |
462 | bfd_alloc (abfd, sizeof (struct info_hash_table))); | |
bd210d54 NC |
463 | if (!hash_table) |
464 | return hash_table; | |
465 | ||
466 | if (!bfd_hash_table_init (&hash_table->base, info_hash_table_newfunc, | |
467 | sizeof (struct info_hash_entry))) | |
468 | { | |
469 | bfd_release (abfd, hash_table); | |
470 | return NULL; | |
471 | } | |
472 | ||
473 | return hash_table; | |
474 | } | |
475 | ||
476 | /* Insert an info entry into an info hash table. We do not check of | |
477 | duplicate entries. Also, the caller need to guarantee that the | |
478 | right type of info in inserted as info is passed as a void* pointer. | |
479 | This function returns true if there is no error. */ | |
480 | ||
481 | static bfd_boolean | |
482 | insert_info_hash_table (struct info_hash_table *hash_table, | |
483 | const char *key, | |
484 | void *info, | |
485 | bfd_boolean copy_p) | |
486 | { | |
487 | struct info_hash_entry *entry; | |
488 | struct info_list_node *node; | |
489 | ||
490 | entry = (struct info_hash_entry*) bfd_hash_lookup (&hash_table->base, | |
491 | key, TRUE, copy_p); | |
492 | if (!entry) | |
493 | return FALSE; | |
494 | ||
a50b1753 | 495 | node = (struct info_list_node *) bfd_hash_allocate (&hash_table->base, |
93ee1e36 | 496 | sizeof (*node)); |
bd210d54 NC |
497 | if (!node) |
498 | return FALSE; | |
499 | ||
500 | node->info = info; | |
501 | node->next = entry->head; | |
502 | entry->head = node; | |
503 | ||
504 | return TRUE; | |
505 | } | |
506 | ||
507 | /* Look up an info entry list from an info hash table. Return NULL | |
089e3718 | 508 | if there is none. */ |
bd210d54 NC |
509 | |
510 | static struct info_list_node * | |
511 | lookup_info_hash_table (struct info_hash_table *hash_table, const char *key) | |
512 | { | |
513 | struct info_hash_entry *entry; | |
514 | ||
515 | entry = (struct info_hash_entry*) bfd_hash_lookup (&hash_table->base, key, | |
516 | FALSE, FALSE); | |
517 | return entry ? entry->head : NULL; | |
518 | } | |
519 | ||
1b315056 | 520 | /* Read a section into its appropriate place in the dwarf2_debug |
dc80fd5c | 521 | struct (indicated by SECTION_BUFFER and SECTION_SIZE). If SYMS is |
1b315056 | 522 | not NULL, use bfd_simple_get_relocated_section_contents to read the |
dc80fd5c NC |
523 | section contents, otherwise use bfd_get_section_contents. Fail if |
524 | the located section does not contain at least OFFSET bytes. */ | |
1b315056 CS |
525 | |
526 | static bfd_boolean | |
07d6d2b8 | 527 | read_section (bfd * abfd, |
fc28f9aa | 528 | const struct dwarf_debug_section *sec, |
dc80fd5c NC |
529 | asymbol ** syms, |
530 | bfd_uint64_t offset, | |
531 | bfd_byte ** section_buffer, | |
532 | bfd_size_type * section_size) | |
1b315056 | 533 | { |
fc28f9aa | 534 | const char *section_name = sec->uncompressed_name; |
4b04bba2 | 535 | bfd_byte *contents = *section_buffer; |
1b315056 | 536 | |
95e34fb4 | 537 | /* The section may have already been read. */ |
4b04bba2 | 538 | if (contents == NULL) |
1b315056 | 539 | { |
647cebce NC |
540 | bfd_size_type amt; |
541 | asection *msec; | |
542 | ufile_ptr filesize; | |
543 | ||
53638231 | 544 | msec = bfd_get_section_by_name (abfd, section_name); |
647cebce | 545 | if (msec == NULL) |
53638231 | 546 | { |
fc28f9aa | 547 | section_name = sec->compressed_name; |
93ee1e36 AM |
548 | if (section_name != NULL) |
549 | msec = bfd_get_section_by_name (abfd, section_name); | |
53638231 | 550 | } |
647cebce | 551 | if (msec == NULL) |
2d47a72c | 552 | { |
9793eb77 | 553 | _bfd_error_handler (_("DWARF error: can't find %s section."), |
4eca0228 | 554 | sec->uncompressed_name); |
2d47a72c DJ |
555 | bfd_set_error (bfd_error_bad_value); |
556 | return FALSE; | |
557 | } | |
53638231 | 558 | |
647cebce NC |
559 | amt = bfd_get_section_limit_octets (abfd, msec); |
560 | filesize = bfd_get_file_size (abfd); | |
561 | if (amt >= filesize) | |
562 | { | |
563 | /* PR 26946 */ | |
564 | _bfd_error_handler (_("DWARF error: section %s is larger than its filesize! (0x%lx vs 0x%lx)"), | |
565 | section_name, (long) amt, (long) filesize); | |
566 | bfd_set_error (bfd_error_bad_value); | |
567 | return FALSE; | |
568 | } | |
569 | *section_size = amt; | |
4b04bba2 AM |
570 | /* Paranoia - alloc one extra so that we can make sure a string |
571 | section is NUL terminated. */ | |
647cebce | 572 | amt += 1; |
30838132 AM |
573 | if (amt == 0) |
574 | { | |
647cebce | 575 | /* Paranoia - this should never happen. */ |
30838132 AM |
576 | bfd_set_error (bfd_error_no_memory); |
577 | return FALSE; | |
578 | } | |
579 | contents = (bfd_byte *) bfd_malloc (amt); | |
4b04bba2 AM |
580 | if (contents == NULL) |
581 | return FALSE; | |
582 | if (syms | |
583 | ? !bfd_simple_get_relocated_section_contents (abfd, msec, contents, | |
584 | syms) | |
585 | : !bfd_get_section_contents (abfd, msec, contents, 0, *section_size)) | |
8c2ccebd | 586 | { |
4b04bba2 AM |
587 | free (contents); |
588 | return FALSE; | |
e4f27230 | 589 | } |
4b04bba2 AM |
590 | contents[*section_size] = 0; |
591 | *section_buffer = contents; | |
1b315056 CS |
592 | } |
593 | ||
594 | /* It is possible to get a bad value for the offset into the section | |
dc80fd5c | 595 | that the client wants. Validate it here to avoid trouble later. */ |
1b315056 CS |
596 | if (offset != 0 && offset >= *section_size) |
597 | { | |
695344c0 | 598 | /* xgettext: c-format */ |
9793eb77 AM |
599 | _bfd_error_handler (_("DWARF error: offset (%" PRIu64 ")" |
600 | " greater than or equal to %s size (%" PRIu64 ")"), | |
8979927a | 601 | (uint64_t) offset, section_name, |
2dcf00ce | 602 | (uint64_t) *section_size); |
1b315056 CS |
603 | bfd_set_error (bfd_error_bad_value); |
604 | return FALSE; | |
605 | } | |
606 | ||
607 | return TRUE; | |
608 | } | |
609 | ||
a092b084 | 610 | /* Read dwarf information from a buffer. */ |
252b5132 RH |
611 | |
612 | static unsigned int | |
dbb3fbbb | 613 | read_1_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf, bfd_byte *end) |
252b5132 | 614 | { |
dbb3fbbb NC |
615 | if (buf + 1 > end) |
616 | return 0; | |
818a27ac | 617 | return bfd_get_8 (abfd, buf); |
252b5132 RH |
618 | } |
619 | ||
620 | static int | |
dbb3fbbb | 621 | read_1_signed_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf, bfd_byte *end) |
252b5132 | 622 | { |
dbb3fbbb NC |
623 | if (buf + 1 > end) |
624 | return 0; | |
818a27ac | 625 | return bfd_get_signed_8 (abfd, buf); |
252b5132 RH |
626 | } |
627 | ||
628 | static unsigned int | |
dbb3fbbb | 629 | read_2_bytes (bfd *abfd, bfd_byte *buf, bfd_byte *end) |
252b5132 | 630 | { |
dbb3fbbb NC |
631 | if (buf + 2 > end) |
632 | return 0; | |
818a27ac | 633 | return bfd_get_16 (abfd, buf); |
252b5132 RH |
634 | } |
635 | ||
252b5132 | 636 | static unsigned int |
dbb3fbbb | 637 | read_4_bytes (bfd *abfd, bfd_byte *buf, bfd_byte *end) |
252b5132 | 638 | { |
dbb3fbbb NC |
639 | if (buf + 4 > end) |
640 | return 0; | |
818a27ac | 641 | return bfd_get_32 (abfd, buf); |
252b5132 RH |
642 | } |
643 | ||
8ce8c090 | 644 | static bfd_uint64_t |
dbb3fbbb | 645 | read_8_bytes (bfd *abfd, bfd_byte *buf, bfd_byte *end) |
252b5132 | 646 | { |
dbb3fbbb NC |
647 | if (buf + 8 > end) |
648 | return 0; | |
818a27ac | 649 | return bfd_get_64 (abfd, buf); |
252b5132 RH |
650 | } |
651 | ||
f075ee0c | 652 | static bfd_byte * |
12c96342 NC |
653 | read_n_bytes (bfd_byte * buf, |
654 | bfd_byte * end, | |
655 | struct dwarf_block * block) | |
252b5132 | 656 | { |
12c96342 NC |
657 | unsigned int size = block->size; |
658 | bfd_byte * block_end = buf + size; | |
659 | ||
660 | if (block_end > end || block_end < buf) | |
661 | { | |
662 | block->data = NULL; | |
663 | block->size = 0; | |
664 | return end; | |
665 | } | |
666 | else | |
667 | { | |
668 | block->data = buf; | |
669 | return block_end; | |
670 | } | |
252b5132 RH |
671 | } |
672 | ||
dbb3fbbb NC |
673 | /* Scans a NUL terminated string starting at BUF, returning a pointer to it. |
674 | Returns the number of characters in the string, *including* the NUL byte, | |
675 | in BYTES_READ_PTR. This value is set even if the function fails. Bytes | |
676 | at or beyond BUF_END will not be read. Returns NULL if there was a | |
677 | problem, or if the string is empty. */ | |
678 | ||
252b5132 | 679 | static char * |
07d6d2b8 AM |
680 | read_string (bfd * abfd ATTRIBUTE_UNUSED, |
681 | bfd_byte * buf, | |
682 | bfd_byte * buf_end, | |
dbb3fbbb | 683 | unsigned int * bytes_read_ptr) |
252b5132 | 684 | { |
dbb3fbbb NC |
685 | bfd_byte *str = buf; |
686 | ||
687 | if (buf >= buf_end) | |
688 | { | |
689 | * bytes_read_ptr = 0; | |
690 | return NULL; | |
691 | } | |
dc80fd5c | 692 | |
f075ee0c | 693 | if (*str == '\0') |
252b5132 | 694 | { |
dbb3fbbb | 695 | * bytes_read_ptr = 1; |
252b5132 RH |
696 | return NULL; |
697 | } | |
98591c73 | 698 | |
dbb3fbbb NC |
699 | while (buf < buf_end) |
700 | if (* buf ++ == 0) | |
701 | { | |
702 | * bytes_read_ptr = buf - str; | |
703 | return (char *) str; | |
704 | } | |
705 | ||
706 | * bytes_read_ptr = buf - str; | |
707 | return NULL; | |
252b5132 RH |
708 | } |
709 | ||
dbb3fbbb NC |
710 | /* Reads an offset from BUF and then locates the string at this offset |
711 | inside the debug string section. Returns a pointer to the string. | |
712 | Returns the number of bytes read from BUF, *not* the length of the string, | |
713 | in BYTES_READ_PTR. This value is set even if the function fails. Bytes | |
714 | at or beyond BUF_END will not be read from BUF. Returns NULL if there was | |
715 | a problem, or if the string is empty. Does not check for NUL termination | |
716 | of the string. */ | |
dc80fd5c | 717 | |
d03ba2a1 | 718 | static char * |
dc80fd5c | 719 | read_indirect_string (struct comp_unit * unit, |
07d6d2b8 AM |
720 | bfd_byte * buf, |
721 | bfd_byte * buf_end, | |
722 | unsigned int * bytes_read_ptr) | |
d03ba2a1 | 723 | { |
8ce8c090 | 724 | bfd_uint64_t offset; |
d03ba2a1 | 725 | struct dwarf2_debug *stash = unit->stash; |
99b06c60 | 726 | struct dwarf2_debug_file *file = unit->file; |
f075ee0c | 727 | char *str; |
d03ba2a1 | 728 | |
dbb3fbbb NC |
729 | if (buf + unit->offset_size > buf_end) |
730 | { | |
731 | * bytes_read_ptr = 0; | |
732 | return NULL; | |
733 | } | |
62f8d217 | 734 | |
d03ba2a1 | 735 | if (unit->offset_size == 4) |
dbb3fbbb | 736 | offset = read_4_bytes (unit->abfd, buf, buf_end); |
d03ba2a1 | 737 | else |
dbb3fbbb | 738 | offset = read_8_bytes (unit->abfd, buf, buf_end); |
dc80fd5c | 739 | |
d03ba2a1 JJ |
740 | *bytes_read_ptr = unit->offset_size; |
741 | ||
fc28f9aa | 742 | if (! read_section (unit->abfd, &stash->debug_sections[debug_str], |
99b06c60 AM |
743 | file->syms, offset, |
744 | &file->dwarf_str_buffer, &file->dwarf_str_size)) | |
dc80fd5c | 745 | return NULL; |
d03ba2a1 | 746 | |
99b06c60 | 747 | str = (char *) file->dwarf_str_buffer + offset; |
f075ee0c | 748 | if (*str == '\0') |
d03ba2a1 | 749 | return NULL; |
f075ee0c | 750 | return str; |
d03ba2a1 JJ |
751 | } |
752 | ||
0041f7df JK |
753 | /* Like read_indirect_string but from .debug_line_str section. */ |
754 | ||
755 | static char * | |
756 | read_indirect_line_string (struct comp_unit * unit, | |
07d6d2b8 AM |
757 | bfd_byte * buf, |
758 | bfd_byte * buf_end, | |
0041f7df JK |
759 | unsigned int * bytes_read_ptr) |
760 | { | |
761 | bfd_uint64_t offset; | |
762 | struct dwarf2_debug *stash = unit->stash; | |
99b06c60 | 763 | struct dwarf2_debug_file *file = unit->file; |
0041f7df JK |
764 | char *str; |
765 | ||
766 | if (buf + unit->offset_size > buf_end) | |
767 | { | |
768 | * bytes_read_ptr = 0; | |
769 | return NULL; | |
770 | } | |
771 | ||
772 | if (unit->offset_size == 4) | |
773 | offset = read_4_bytes (unit->abfd, buf, buf_end); | |
774 | else | |
775 | offset = read_8_bytes (unit->abfd, buf, buf_end); | |
776 | ||
777 | *bytes_read_ptr = unit->offset_size; | |
778 | ||
779 | if (! read_section (unit->abfd, &stash->debug_sections[debug_line_str], | |
99b06c60 AM |
780 | file->syms, offset, |
781 | &file->dwarf_line_str_buffer, | |
782 | &file->dwarf_line_str_size)) | |
0041f7df JK |
783 | return NULL; |
784 | ||
99b06c60 | 785 | str = (char *) file->dwarf_line_str_buffer + offset; |
0041f7df JK |
786 | if (*str == '\0') |
787 | return NULL; | |
788 | return str; | |
789 | } | |
790 | ||
95e34fb4 | 791 | /* Like read_indirect_string but uses a .debug_str located in |
93ee1e36 | 792 | an alternate file pointed to by the .gnu_debugaltlink section. |
95e34fb4 NC |
793 | Used to impement DW_FORM_GNU_strp_alt. */ |
794 | ||
795 | static char * | |
796 | read_alt_indirect_string (struct comp_unit * unit, | |
07d6d2b8 AM |
797 | bfd_byte * buf, |
798 | bfd_byte * buf_end, | |
95e34fb4 NC |
799 | unsigned int * bytes_read_ptr) |
800 | { | |
801 | bfd_uint64_t offset; | |
802 | struct dwarf2_debug *stash = unit->stash; | |
803 | char *str; | |
804 | ||
dbb3fbbb NC |
805 | if (buf + unit->offset_size > buf_end) |
806 | { | |
807 | * bytes_read_ptr = 0; | |
808 | return NULL; | |
809 | } | |
62f8d217 | 810 | |
95e34fb4 | 811 | if (unit->offset_size == 4) |
dbb3fbbb | 812 | offset = read_4_bytes (unit->abfd, buf, buf_end); |
95e34fb4 | 813 | else |
dbb3fbbb | 814 | offset = read_8_bytes (unit->abfd, buf, buf_end); |
95e34fb4 NC |
815 | |
816 | *bytes_read_ptr = unit->offset_size; | |
817 | ||
99b06c60 | 818 | if (stash->alt.bfd_ptr == NULL) |
95e34fb4 | 819 | { |
217d2eaa AM |
820 | bfd *debug_bfd; |
821 | char *debug_filename = bfd_follow_gnu_debugaltlink (unit->abfd, DEBUGDIR); | |
95e34fb4 NC |
822 | |
823 | if (debug_filename == NULL) | |
824 | return NULL; | |
825 | ||
217d2eaa AM |
826 | debug_bfd = bfd_openr (debug_filename, NULL); |
827 | free (debug_filename); | |
828 | if (debug_bfd == NULL) | |
829 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
830 | return NULL; | |
95e34fb4 | 831 | |
217d2eaa AM |
832 | if (!bfd_check_format (debug_bfd, bfd_object)) |
833 | { | |
834 | bfd_close (debug_bfd); | |
95e34fb4 NC |
835 | return NULL; |
836 | } | |
99b06c60 | 837 | stash->alt.bfd_ptr = debug_bfd; |
95e34fb4 | 838 | } |
62f8d217 | 839 | |
99b06c60 | 840 | if (! read_section (unit->stash->alt.bfd_ptr, |
95e34fb4 | 841 | stash->debug_sections + debug_str_alt, |
99b06c60 AM |
842 | stash->alt.syms, offset, |
843 | &stash->alt.dwarf_str_buffer, | |
844 | &stash->alt.dwarf_str_size)) | |
95e34fb4 NC |
845 | return NULL; |
846 | ||
99b06c60 | 847 | str = (char *) stash->alt.dwarf_str_buffer + offset; |
95e34fb4 NC |
848 | if (*str == '\0') |
849 | return NULL; | |
850 | ||
851 | return str; | |
852 | } | |
853 | ||
854 | /* Resolve an alternate reference from UNIT at OFFSET. | |
855 | Returns a pointer into the loaded alternate CU upon success | |
856 | or NULL upon failure. */ | |
857 | ||
858 | static bfd_byte * | |
859 | read_alt_indirect_ref (struct comp_unit * unit, | |
860 | bfd_uint64_t offset) | |
861 | { | |
862 | struct dwarf2_debug *stash = unit->stash; | |
863 | ||
99b06c60 | 864 | if (stash->alt.bfd_ptr == NULL) |
95e34fb4 | 865 | { |
217d2eaa AM |
866 | bfd *debug_bfd; |
867 | char *debug_filename = bfd_follow_gnu_debugaltlink (unit->abfd, DEBUGDIR); | |
95e34fb4 NC |
868 | |
869 | if (debug_filename == NULL) | |
1b8e1271 | 870 | return NULL; |
95e34fb4 | 871 | |
217d2eaa AM |
872 | debug_bfd = bfd_openr (debug_filename, NULL); |
873 | free (debug_filename); | |
874 | if (debug_bfd == NULL) | |
875 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
876 | return NULL; | |
95e34fb4 | 877 | |
217d2eaa AM |
878 | if (!bfd_check_format (debug_bfd, bfd_object)) |
879 | { | |
880 | bfd_close (debug_bfd); | |
95e34fb4 NC |
881 | return NULL; |
882 | } | |
99b06c60 | 883 | stash->alt.bfd_ptr = debug_bfd; |
95e34fb4 | 884 | } |
62f8d217 | 885 | |
99b06c60 | 886 | if (! read_section (unit->stash->alt.bfd_ptr, |
95e34fb4 | 887 | stash->debug_sections + debug_info_alt, |
99b06c60 AM |
888 | stash->alt.syms, offset, |
889 | &stash->alt.dwarf_info_buffer, | |
890 | &stash->alt.dwarf_info_size)) | |
95e34fb4 NC |
891 | return NULL; |
892 | ||
99b06c60 | 893 | return stash->alt.dwarf_info_buffer + offset; |
95e34fb4 NC |
894 | } |
895 | ||
8ce8c090 | 896 | static bfd_uint64_t |
dbb3fbbb | 897 | read_address (struct comp_unit *unit, bfd_byte *buf, bfd_byte * buf_end) |
252b5132 | 898 | { |
fa15f18d AM |
899 | int signed_vma = 0; |
900 | ||
901 | if (bfd_get_flavour (unit->abfd) == bfd_target_elf_flavour) | |
902 | signed_vma = get_elf_backend_data (unit->abfd)->sign_extend_vma; | |
0af4cd7c | 903 | |
dbb3fbbb NC |
904 | if (buf + unit->addr_size > buf_end) |
905 | return 0; | |
906 | ||
0af4cd7c PK |
907 | if (signed_vma) |
908 | { | |
909 | switch (unit->addr_size) | |
910 | { | |
911 | case 8: | |
912 | return bfd_get_signed_64 (unit->abfd, buf); | |
913 | case 4: | |
914 | return bfd_get_signed_32 (unit->abfd, buf); | |
915 | case 2: | |
916 | return bfd_get_signed_16 (unit->abfd, buf); | |
917 | default: | |
918 | abort (); | |
919 | } | |
920 | } | |
921 | else | |
252b5132 | 922 | { |
0af4cd7c PK |
923 | switch (unit->addr_size) |
924 | { | |
925 | case 8: | |
926 | return bfd_get_64 (unit->abfd, buf); | |
927 | case 4: | |
928 | return bfd_get_32 (unit->abfd, buf); | |
929 | case 2: | |
930 | return bfd_get_16 (unit->abfd, buf); | |
931 | default: | |
932 | abort (); | |
933 | } | |
252b5132 | 934 | } |
252b5132 RH |
935 | } |
936 | ||
252b5132 RH |
937 | /* Lookup an abbrev_info structure in the abbrev hash table. */ |
938 | ||
939 | static struct abbrev_info * | |
818a27ac | 940 | lookup_abbrev (unsigned int number, struct abbrev_info **abbrevs) |
252b5132 RH |
941 | { |
942 | unsigned int hash_number; | |
943 | struct abbrev_info *abbrev; | |
944 | ||
945 | hash_number = number % ABBREV_HASH_SIZE; | |
946 | abbrev = abbrevs[hash_number]; | |
947 | ||
948 | while (abbrev) | |
949 | { | |
950 | if (abbrev->number == number) | |
951 | return abbrev; | |
952 | else | |
953 | abbrev = abbrev->next; | |
954 | } | |
98591c73 | 955 | |
252b5132 RH |
956 | return NULL; |
957 | } | |
958 | ||
e63ef095 AM |
959 | /* We keep a hash table to map .debug_abbrev section offsets to the |
960 | array of abbrevs, so that compilation units using the same set of | |
961 | abbrevs do not waste memory. */ | |
962 | ||
963 | struct abbrev_offset_entry | |
964 | { | |
965 | size_t offset; | |
966 | struct abbrev_info **abbrevs; | |
967 | }; | |
968 | ||
969 | static hashval_t | |
970 | hash_abbrev (const void *p) | |
971 | { | |
972 | const struct abbrev_offset_entry *ent = p; | |
973 | return htab_hash_pointer ((void *) ent->offset); | |
974 | } | |
975 | ||
976 | static int | |
977 | eq_abbrev (const void *pa, const void *pb) | |
978 | { | |
979 | const struct abbrev_offset_entry *a = pa; | |
980 | const struct abbrev_offset_entry *b = pb; | |
981 | return a->offset == b->offset; | |
982 | } | |
983 | ||
984 | static void | |
985 | del_abbrev (void *p) | |
986 | { | |
987 | struct abbrev_offset_entry *ent = p; | |
988 | struct abbrev_info **abbrevs = ent->abbrevs; | |
989 | size_t i; | |
990 | ||
991 | for (i = 0; i < ABBREV_HASH_SIZE; i++) | |
992 | { | |
993 | struct abbrev_info *abbrev = abbrevs[i]; | |
994 | ||
995 | while (abbrev) | |
996 | { | |
997 | free (abbrev->attrs); | |
998 | abbrev = abbrev->next; | |
999 | } | |
1000 | } | |
1001 | free (ent); | |
1002 | } | |
1003 | ||
252b5132 RH |
1004 | /* In DWARF version 2, the description of the debugging information is |
1005 | stored in a separate .debug_abbrev section. Before we read any | |
1006 | dies from a section we read in all abbreviations and install them | |
1007 | in a hash table. */ | |
1008 | ||
1009 | static struct abbrev_info** | |
99b06c60 AM |
1010 | read_abbrevs (bfd *abfd, bfd_uint64_t offset, struct dwarf2_debug *stash, |
1011 | struct dwarf2_debug_file *file) | |
252b5132 RH |
1012 | { |
1013 | struct abbrev_info **abbrevs; | |
f075ee0c | 1014 | bfd_byte *abbrev_ptr; |
dbb3fbbb | 1015 | bfd_byte *abbrev_end; |
252b5132 RH |
1016 | struct abbrev_info *cur_abbrev; |
1017 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
1018 | unsigned int abbrev_form, hash_number; | |
986f0783 | 1019 | size_t amt; |
e63ef095 AM |
1020 | void **slot; |
1021 | struct abbrev_offset_entry ent = { offset, NULL }; | |
1022 | ||
1023 | if (ent.offset != offset) | |
1024 | return NULL; | |
1025 | ||
1026 | slot = htab_find_slot (file->abbrev_offsets, &ent, INSERT); | |
1027 | if (slot == NULL) | |
1028 | return NULL; | |
1029 | if (*slot != NULL) | |
1030 | return ((struct abbrev_offset_entry *) (*slot))->abbrevs; | |
252b5132 | 1031 | |
fc28f9aa | 1032 | if (! read_section (abfd, &stash->debug_sections[debug_abbrev], |
99b06c60 AM |
1033 | file->syms, offset, |
1034 | &file->dwarf_abbrev_buffer, | |
1035 | &file->dwarf_abbrev_size)) | |
8af6b354 | 1036 | return NULL; |
252b5132 | 1037 | |
dc810e39 | 1038 | amt = sizeof (struct abbrev_info*) * ABBREV_HASH_SIZE; |
a50b1753 | 1039 | abbrevs = (struct abbrev_info **) bfd_zalloc (abfd, amt); |
8af6b354 AM |
1040 | if (abbrevs == NULL) |
1041 | return NULL; | |
252b5132 | 1042 | |
99b06c60 AM |
1043 | abbrev_ptr = file->dwarf_abbrev_buffer + offset; |
1044 | abbrev_end = file->dwarf_abbrev_buffer + file->dwarf_abbrev_size; | |
c7c3d11b PA |
1045 | abbrev_number = _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, |
1046 | FALSE, abbrev_end); | |
252b5132 RH |
1047 | abbrev_ptr += bytes_read; |
1048 | ||
a092b084 | 1049 | /* Loop until we reach an abbrev number of 0. */ |
252b5132 RH |
1050 | while (abbrev_number) |
1051 | { | |
dc810e39 | 1052 | amt = sizeof (struct abbrev_info); |
a50b1753 | 1053 | cur_abbrev = (struct abbrev_info *) bfd_zalloc (abfd, amt); |
8af6b354 | 1054 | if (cur_abbrev == NULL) |
019cc875 | 1055 | goto fail; |
252b5132 | 1056 | |
a092b084 | 1057 | /* Read in abbrev header. */ |
252b5132 | 1058 | cur_abbrev->number = abbrev_number; |
d45913a0 | 1059 | cur_abbrev->tag = (enum dwarf_tag) |
4265548c PA |
1060 | _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, |
1061 | FALSE, abbrev_end); | |
252b5132 | 1062 | abbrev_ptr += bytes_read; |
dbb3fbbb | 1063 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr, abbrev_end); |
252b5132 RH |
1064 | abbrev_ptr += 1; |
1065 | ||
a092b084 | 1066 | /* Now read in declarations. */ |
0041f7df | 1067 | for (;;) |
252b5132 | 1068 | { |
0041f7df JK |
1069 | /* Initialize it just to avoid a GCC false warning. */ |
1070 | bfd_vma implicit_const = -1; | |
1071 | ||
1072 | abbrev_name = _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, | |
1073 | FALSE, abbrev_end); | |
1074 | abbrev_ptr += bytes_read; | |
1075 | abbrev_form = _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, | |
1076 | FALSE, abbrev_end); | |
1077 | abbrev_ptr += bytes_read; | |
1078 | if (abbrev_form == DW_FORM_implicit_const) | |
1079 | { | |
1080 | implicit_const = _bfd_safe_read_leb128 (abfd, abbrev_ptr, | |
1081 | &bytes_read, TRUE, | |
1082 | abbrev_end); | |
1083 | abbrev_ptr += bytes_read; | |
1084 | } | |
1085 | ||
1086 | if (abbrev_name == 0) | |
1087 | break; | |
1088 | ||
252b5132 RH |
1089 | if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0) |
1090 | { | |
35330cce NC |
1091 | struct attr_abbrev *tmp; |
1092 | ||
dc810e39 AM |
1093 | amt = cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK; |
1094 | amt *= sizeof (struct attr_abbrev); | |
a50b1753 | 1095 | tmp = (struct attr_abbrev *) bfd_realloc (cur_abbrev->attrs, amt); |
35330cce | 1096 | if (tmp == NULL) |
019cc875 | 1097 | goto fail; |
35330cce | 1098 | cur_abbrev->attrs = tmp; |
252b5132 | 1099 | } |
98591c73 | 1100 | |
d45913a0 DA |
1101 | cur_abbrev->attrs[cur_abbrev->num_attrs].name |
1102 | = (enum dwarf_attribute) abbrev_name; | |
0041f7df | 1103 | cur_abbrev->attrs[cur_abbrev->num_attrs].form |
d45913a0 | 1104 | = (enum dwarf_form) abbrev_form; |
0041f7df JK |
1105 | cur_abbrev->attrs[cur_abbrev->num_attrs].implicit_const |
1106 | = implicit_const; | |
1107 | ++cur_abbrev->num_attrs; | |
252b5132 RH |
1108 | } |
1109 | ||
1110 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
1111 | cur_abbrev->next = abbrevs[hash_number]; | |
1112 | abbrevs[hash_number] = cur_abbrev; | |
1113 | ||
1114 | /* Get next abbreviation. | |
e82ce529 | 1115 | Under Irix6 the abbreviations for a compilation unit are not |
252b5132 RH |
1116 | always properly terminated with an abbrev number of 0. |
1117 | Exit loop if we encounter an abbreviation which we have | |
1118 | already read (which means we are about to read the abbreviations | |
1119 | for the next compile unit) or if the end of the abbreviation | |
1120 | table is reached. */ | |
99b06c60 AM |
1121 | if ((size_t) (abbrev_ptr - file->dwarf_abbrev_buffer) |
1122 | >= file->dwarf_abbrev_size) | |
252b5132 | 1123 | break; |
4265548c PA |
1124 | abbrev_number = _bfd_safe_read_leb128 (abfd, abbrev_ptr, |
1125 | &bytes_read, FALSE, abbrev_end); | |
252b5132 | 1126 | abbrev_ptr += bytes_read; |
dbb3fbbb | 1127 | if (lookup_abbrev (abbrev_number, abbrevs) != NULL) |
252b5132 RH |
1128 | break; |
1129 | } | |
e63ef095 AM |
1130 | |
1131 | *slot = bfd_malloc (sizeof ent); | |
1132 | if (!*slot) | |
1133 | goto fail; | |
1134 | ent.abbrevs = abbrevs; | |
1135 | memcpy (*slot, &ent, sizeof ent); | |
252b5132 | 1136 | return abbrevs; |
019cc875 AM |
1137 | |
1138 | fail: | |
1139 | if (abbrevs != NULL) | |
1140 | { | |
1141 | size_t i; | |
1142 | ||
1143 | for (i = 0; i < ABBREV_HASH_SIZE; i++) | |
1144 | { | |
1145 | struct abbrev_info *abbrev = abbrevs[i]; | |
1146 | ||
1147 | while (abbrev) | |
1148 | { | |
1149 | free (abbrev->attrs); | |
1150 | abbrev = abbrev->next; | |
1151 | } | |
1152 | } | |
1153 | free (abbrevs); | |
1154 | } | |
1155 | return NULL; | |
252b5132 RH |
1156 | } |
1157 | ||
60d77146 NC |
1158 | /* Returns true if the form is one which has a string value. */ |
1159 | ||
1160 | static inline bfd_boolean | |
1161 | is_str_attr (enum dwarf_form form) | |
1162 | { | |
2017f387 NC |
1163 | return (form == DW_FORM_string |
1164 | || form == DW_FORM_strp | |
1165 | || form == DW_FORM_strx | |
1166 | || form == DW_FORM_strx1 | |
1167 | || form == DW_FORM_strx2 | |
1168 | || form == DW_FORM_strx3 | |
1169 | || form == DW_FORM_strx4 | |
1170 | || form == DW_FORM_line_strp | |
1171 | || form == DW_FORM_GNU_strp_alt); | |
1172 | } | |
1173 | ||
1174 | static const char * | |
f596b03f | 1175 | read_indexed_string (bfd_uint64_t idx ATTRIBUTE_UNUSED, |
2017f387 NC |
1176 | struct comp_unit * unit ATTRIBUTE_UNUSED) |
1177 | { | |
1178 | /* FIXME: Add support for indexed strings. */ | |
1179 | return "<indexed strings not yet supported>"; | |
60d77146 NC |
1180 | } |
1181 | ||
dbb3fbbb NC |
1182 | /* Read and fill in the value of attribute ATTR as described by FORM. |
1183 | Read data starting from INFO_PTR, but never at or beyond INFO_PTR_END. | |
1184 | Returns an updated INFO_PTR taking into account the amount of data read. */ | |
252b5132 | 1185 | |
f075ee0c | 1186 | static bfd_byte * |
dbb3fbbb | 1187 | read_attribute_value (struct attribute * attr, |
07d6d2b8 AM |
1188 | unsigned form, |
1189 | bfd_vma implicit_const, | |
dbb3fbbb | 1190 | struct comp_unit * unit, |
07d6d2b8 AM |
1191 | bfd_byte * info_ptr, |
1192 | bfd_byte * info_ptr_end) | |
252b5132 RH |
1193 | { |
1194 | bfd *abfd = unit->abfd; | |
1195 | unsigned int bytes_read; | |
1196 | struct dwarf_block *blk; | |
986f0783 | 1197 | size_t amt; |
252b5132 | 1198 | |
a97fbc7e | 1199 | if (info_ptr >= info_ptr_end && form != DW_FORM_flag_present) |
dbb3fbbb | 1200 | { |
9793eb77 | 1201 | _bfd_error_handler (_("DWARF error: info pointer extends beyond end of attributes")); |
dbb3fbbb NC |
1202 | bfd_set_error (bfd_error_bad_value); |
1203 | return info_ptr; | |
1204 | } | |
1205 | ||
d45913a0 | 1206 | attr->form = (enum dwarf_form) form; |
98591c73 | 1207 | |
cf716c56 | 1208 | switch (form) |
252b5132 | 1209 | { |
2017f387 NC |
1210 | case DW_FORM_flag_present: |
1211 | attr->u.val = 1; | |
1212 | break; | |
252b5132 | 1213 | case DW_FORM_ref_addr: |
5609a71e DJ |
1214 | /* DW_FORM_ref_addr is an address in DWARF2, and an offset in |
1215 | DWARF3. */ | |
51f6e7a9 | 1216 | if (unit->version >= 3) |
5609a71e DJ |
1217 | { |
1218 | if (unit->offset_size == 4) | |
dbb3fbbb | 1219 | attr->u.val = read_4_bytes (unit->abfd, info_ptr, info_ptr_end); |
5609a71e | 1220 | else |
dbb3fbbb | 1221 | attr->u.val = read_8_bytes (unit->abfd, info_ptr, info_ptr_end); |
5609a71e DJ |
1222 | info_ptr += unit->offset_size; |
1223 | break; | |
1224 | } | |
1225 | /* FALLTHROUGH */ | |
1226 | case DW_FORM_addr: | |
dbb3fbbb | 1227 | attr->u.val = read_address (unit, info_ptr, info_ptr_end); |
252b5132 RH |
1228 | info_ptr += unit->addr_size; |
1229 | break; | |
95e34fb4 | 1230 | case DW_FORM_GNU_ref_alt: |
c07cbdd7 JJ |
1231 | case DW_FORM_sec_offset: |
1232 | if (unit->offset_size == 4) | |
dbb3fbbb | 1233 | attr->u.val = read_4_bytes (unit->abfd, info_ptr, info_ptr_end); |
c07cbdd7 | 1234 | else |
dbb3fbbb | 1235 | attr->u.val = read_8_bytes (unit->abfd, info_ptr, info_ptr_end); |
c07cbdd7 JJ |
1236 | info_ptr += unit->offset_size; |
1237 | break; | |
252b5132 | 1238 | case DW_FORM_block2: |
dc810e39 | 1239 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1240 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1241 | if (blk == NULL) |
1242 | return NULL; | |
dbb3fbbb | 1243 | blk->size = read_2_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 | 1244 | info_ptr += 2; |
12c96342 | 1245 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1246 | attr->u.blk = blk; |
252b5132 RH |
1247 | break; |
1248 | case DW_FORM_block4: | |
dc810e39 | 1249 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1250 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1251 | if (blk == NULL) |
1252 | return NULL; | |
dbb3fbbb | 1253 | blk->size = read_4_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 | 1254 | info_ptr += 4; |
12c96342 | 1255 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1256 | attr->u.blk = blk; |
252b5132 | 1257 | break; |
2017f387 NC |
1258 | case DW_FORM_ref1: |
1259 | case DW_FORM_flag: | |
1260 | case DW_FORM_data1: | |
1261 | case DW_FORM_addrx1: | |
1262 | attr->u.val = read_1_byte (abfd, info_ptr, info_ptr_end); | |
1263 | info_ptr += 1; | |
1264 | break; | |
252b5132 | 1265 | case DW_FORM_data2: |
2017f387 | 1266 | case DW_FORM_ref2: |
dbb3fbbb | 1267 | attr->u.val = read_2_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1268 | info_ptr += 2; |
1269 | break; | |
2017f387 NC |
1270 | case DW_FORM_addrx3: |
1271 | attr->u.val = read_4_bytes (abfd, info_ptr, info_ptr_end); | |
1272 | attr->u.val &= 0xffffff; | |
1273 | info_ptr += 3; | |
1274 | break; | |
1275 | case DW_FORM_ref4: | |
252b5132 | 1276 | case DW_FORM_data4: |
2017f387 | 1277 | case DW_FORM_addrx4: |
dbb3fbbb | 1278 | attr->u.val = read_4_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1279 | info_ptr += 4; |
1280 | break; | |
1281 | case DW_FORM_data8: | |
2017f387 NC |
1282 | case DW_FORM_ref8: |
1283 | case DW_FORM_ref_sig8: | |
dbb3fbbb | 1284 | attr->u.val = read_8_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1285 | info_ptr += 8; |
1286 | break; | |
1287 | case DW_FORM_string: | |
dbb3fbbb | 1288 | attr->u.str = read_string (abfd, info_ptr, info_ptr_end, &bytes_read); |
252b5132 RH |
1289 | info_ptr += bytes_read; |
1290 | break; | |
d03ba2a1 | 1291 | case DW_FORM_strp: |
dbb3fbbb | 1292 | attr->u.str = read_indirect_string (unit, info_ptr, info_ptr_end, &bytes_read); |
d03ba2a1 JJ |
1293 | info_ptr += bytes_read; |
1294 | break; | |
0041f7df JK |
1295 | case DW_FORM_line_strp: |
1296 | attr->u.str = read_indirect_line_string (unit, info_ptr, info_ptr_end, &bytes_read); | |
1297 | info_ptr += bytes_read; | |
1298 | break; | |
95e34fb4 | 1299 | case DW_FORM_GNU_strp_alt: |
dbb3fbbb | 1300 | attr->u.str = read_alt_indirect_string (unit, info_ptr, info_ptr_end, &bytes_read); |
95e34fb4 NC |
1301 | info_ptr += bytes_read; |
1302 | break; | |
2017f387 NC |
1303 | case DW_FORM_strx1: |
1304 | attr->u.val = read_1_byte (abfd, info_ptr, info_ptr_end); | |
1305 | info_ptr += 1; | |
1306 | attr->u.str = (char *) read_indexed_string (attr->u.val, unit); | |
1307 | break; | |
1308 | case DW_FORM_strx2: | |
1309 | attr->u.val = read_2_bytes (abfd, info_ptr, info_ptr_end); | |
1310 | info_ptr += 2; | |
1311 | attr->u.str = (char *) read_indexed_string (attr->u.val, unit); | |
1312 | break; | |
1313 | case DW_FORM_strx3: | |
1314 | attr->u.val = read_4_bytes (abfd, info_ptr, info_ptr_end); | |
1315 | info_ptr += 3; | |
1316 | attr->u.val &= 0xffffff; | |
1317 | attr->u.str = (char *) read_indexed_string (attr->u.val, unit); | |
1318 | break; | |
1319 | case DW_FORM_strx4: | |
1320 | attr->u.val = read_4_bytes (abfd, info_ptr, info_ptr_end); | |
1321 | info_ptr += 4; | |
1322 | attr->u.str = (char *) read_indexed_string (attr->u.val, unit); | |
1323 | break; | |
1324 | case DW_FORM_strx: | |
1325 | attr->u.val = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, | |
1326 | FALSE, info_ptr_end); | |
1327 | info_ptr += bytes_read; | |
1328 | attr->u.str = (char *) read_indexed_string (attr->u.val, unit); | |
1329 | break; | |
c07cbdd7 | 1330 | case DW_FORM_exprloc: |
252b5132 | 1331 | case DW_FORM_block: |
dc810e39 | 1332 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1333 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1334 | if (blk == NULL) |
1335 | return NULL; | |
4265548c PA |
1336 | blk->size = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1337 | FALSE, info_ptr_end); | |
252b5132 | 1338 | info_ptr += bytes_read; |
12c96342 | 1339 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1340 | attr->u.blk = blk; |
252b5132 RH |
1341 | break; |
1342 | case DW_FORM_block1: | |
dc810e39 | 1343 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1344 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1345 | if (blk == NULL) |
1346 | return NULL; | |
dbb3fbbb | 1347 | blk->size = read_1_byte (abfd, info_ptr, info_ptr_end); |
252b5132 | 1348 | info_ptr += 1; |
12c96342 | 1349 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1350 | attr->u.blk = blk; |
252b5132 | 1351 | break; |
252b5132 | 1352 | case DW_FORM_sdata: |
4265548c PA |
1353 | attr->u.sval = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1354 | TRUE, info_ptr_end); | |
252b5132 RH |
1355 | info_ptr += bytes_read; |
1356 | break; | |
252b5132 | 1357 | case DW_FORM_ref_udata: |
2017f387 NC |
1358 | case DW_FORM_udata: |
1359 | case DW_FORM_addrx: | |
4265548c PA |
1360 | attr->u.val = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1361 | FALSE, info_ptr_end); | |
252b5132 RH |
1362 | info_ptr += bytes_read; |
1363 | break; | |
252b5132 | 1364 | case DW_FORM_indirect: |
4265548c PA |
1365 | form = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1366 | FALSE, info_ptr_end); | |
cf716c56 | 1367 | info_ptr += bytes_read; |
0041f7df JK |
1368 | if (form == DW_FORM_implicit_const) |
1369 | { | |
1370 | implicit_const = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, | |
1371 | TRUE, info_ptr_end); | |
1372 | info_ptr += bytes_read; | |
1373 | } | |
1374 | info_ptr = read_attribute_value (attr, form, implicit_const, unit, | |
1375 | info_ptr, info_ptr_end); | |
1376 | break; | |
1377 | case DW_FORM_implicit_const: | |
1378 | attr->form = DW_FORM_sdata; | |
1379 | attr->u.sval = implicit_const; | |
cf716c56 | 1380 | break; |
19d80e5f MW |
1381 | case DW_FORM_data16: |
1382 | /* This is really a "constant", but there is no way to store that | |
1383 | so pretend it is a 16 byte block instead. */ | |
1384 | amt = sizeof (struct dwarf_block); | |
1385 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); | |
1386 | if (blk == NULL) | |
1387 | return NULL; | |
1388 | blk->size = 16; | |
1389 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); | |
1390 | attr->u.blk = blk; | |
1391 | break; | |
2017f387 | 1392 | |
252b5132 | 1393 | default: |
9793eb77 | 1394 | _bfd_error_handler (_("DWARF error: invalid or unhandled FORM value: %#x"), |
4eca0228 | 1395 | form); |
252b5132 | 1396 | bfd_set_error (bfd_error_bad_value); |
c07cbdd7 | 1397 | return NULL; |
252b5132 RH |
1398 | } |
1399 | return info_ptr; | |
1400 | } | |
1401 | ||
cf716c56 RH |
1402 | /* Read an attribute described by an abbreviated attribute. */ |
1403 | ||
f075ee0c | 1404 | static bfd_byte * |
dbb3fbbb NC |
1405 | read_attribute (struct attribute * attr, |
1406 | struct attr_abbrev * abbrev, | |
1407 | struct comp_unit * unit, | |
07d6d2b8 AM |
1408 | bfd_byte * info_ptr, |
1409 | bfd_byte * info_ptr_end) | |
cf716c56 RH |
1410 | { |
1411 | attr->name = abbrev->name; | |
0041f7df JK |
1412 | info_ptr = read_attribute_value (attr, abbrev->form, abbrev->implicit_const, |
1413 | unit, info_ptr, info_ptr_end); | |
cf716c56 RH |
1414 | return info_ptr; |
1415 | } | |
1416 | ||
e00e8198 AM |
1417 | /* Return whether DW_AT_name will return the same as DW_AT_linkage_name |
1418 | for a function. */ | |
1419 | ||
1420 | static bfd_boolean | |
1421 | non_mangled (int lang) | |
1422 | { | |
1423 | switch (lang) | |
1424 | { | |
1425 | default: | |
1426 | return FALSE; | |
1427 | ||
1428 | case DW_LANG_C89: | |
1429 | case DW_LANG_C: | |
1430 | case DW_LANG_Ada83: | |
1431 | case DW_LANG_Cobol74: | |
1432 | case DW_LANG_Cobol85: | |
1433 | case DW_LANG_Fortran77: | |
1434 | case DW_LANG_Pascal83: | |
1435 | case DW_LANG_C99: | |
1436 | case DW_LANG_Ada95: | |
1437 | case DW_LANG_PLI: | |
1438 | case DW_LANG_UPC: | |
1439 | case DW_LANG_C11: | |
1440 | return TRUE; | |
1441 | } | |
1442 | } | |
1443 | ||
a092b084 | 1444 | /* Source line information table routines. */ |
252b5132 RH |
1445 | |
1446 | #define FILE_ALLOC_CHUNK 5 | |
1447 | #define DIR_ALLOC_CHUNK 5 | |
1448 | ||
a092b084 NC |
1449 | struct line_info |
1450 | { | |
089e3718 IT |
1451 | struct line_info * prev_line; |
1452 | bfd_vma address; | |
1453 | char * filename; | |
1454 | unsigned int line; | |
1455 | unsigned int column; | |
1456 | unsigned int discriminator; | |
1457 | unsigned char op_index; | |
1458 | unsigned char end_sequence; /* End of (sequential) code sequence. */ | |
252b5132 RH |
1459 | }; |
1460 | ||
a092b084 NC |
1461 | struct fileinfo |
1462 | { | |
089e3718 IT |
1463 | char * name; |
1464 | unsigned int dir; | |
1465 | unsigned int time; | |
1466 | unsigned int size; | |
252b5132 RH |
1467 | }; |
1468 | ||
0ee19663 NC |
1469 | struct line_sequence |
1470 | { | |
07d6d2b8 | 1471 | bfd_vma low_pc; |
0ee19663 | 1472 | struct line_sequence* prev_sequence; |
07d6d2b8 AM |
1473 | struct line_info* last_line; /* Largest VMA. */ |
1474 | struct line_info** line_info_lookup; | |
089e3718 | 1475 | bfd_size_type num_lines; |
0ee19663 NC |
1476 | }; |
1477 | ||
a092b084 NC |
1478 | struct line_info_table |
1479 | { | |
07d6d2b8 AM |
1480 | bfd * abfd; |
1481 | unsigned int num_files; | |
1482 | unsigned int num_dirs; | |
1483 | unsigned int num_sequences; | |
1484 | char * comp_dir; | |
1485 | char ** dirs; | |
1486 | struct fileinfo* files; | |
0ee19663 | 1487 | struct line_sequence* sequences; |
07d6d2b8 | 1488 | struct line_info* lcl_head; /* Local head; used in 'add_line_info'. */ |
252b5132 RH |
1489 | }; |
1490 | ||
4ab527b0 FF |
1491 | /* Remember some information about each function. If the function is |
1492 | inlined (DW_TAG_inlined_subroutine) it may have two additional | |
1493 | attributes, DW_AT_call_file and DW_AT_call_line, which specify the | |
a2a50954 | 1494 | source code location where this function was inlined. */ |
4ab527b0 | 1495 | |
1ee24f27 DJ |
1496 | struct funcinfo |
1497 | { | |
a2a50954 | 1498 | /* Pointer to previous function in list of all functions. */ |
089e3718 | 1499 | struct funcinfo * prev_func; |
a2a50954 | 1500 | /* Pointer to function one scope higher. */ |
089e3718 | 1501 | struct funcinfo * caller_func; |
a2a50954 | 1502 | /* Source location file name where caller_func inlines this func. */ |
089e3718 | 1503 | char * caller_file; |
a2a50954 | 1504 | /* Source location file name. */ |
089e3718 | 1505 | char * file; |
e00e8198 | 1506 | /* Source location line number where caller_func inlines this func. */ |
089e3718 | 1507 | int caller_line; |
a2a50954 | 1508 | /* Source location line number. */ |
089e3718 IT |
1509 | int line; |
1510 | int tag; | |
3b0d929d | 1511 | bfd_boolean is_linkage; |
089e3718 IT |
1512 | const char * name; |
1513 | struct arange arange; | |
a2a50954 | 1514 | /* Where the symbol is defined. */ |
089e3718 | 1515 | asection * sec; |
ca8f6bc6 NC |
1516 | /* The offset of the funcinfo from the start of the unit. */ |
1517 | bfd_uint64_t unit_offset; | |
089e3718 IT |
1518 | }; |
1519 | ||
1520 | struct lookup_funcinfo | |
1521 | { | |
1522 | /* Function information corresponding to this lookup table entry. */ | |
1523 | struct funcinfo * funcinfo; | |
1524 | ||
1525 | /* The lowest address for this specific function. */ | |
07d6d2b8 | 1526 | bfd_vma low_addr; |
089e3718 IT |
1527 | |
1528 | /* The highest address of this function before the lookup table is sorted. | |
1529 | The highest address of all prior functions after the lookup table is | |
1530 | sorted, which is used for binary search. */ | |
07d6d2b8 | 1531 | bfd_vma high_addr; |
8025b055 AM |
1532 | /* Index of this function, used to ensure qsort is stable. */ |
1533 | unsigned int idx; | |
5420f73d L |
1534 | }; |
1535 | ||
1536 | struct varinfo | |
1537 | { | |
f3a08f77 | 1538 | /* Pointer to previous variable in list of all variables. */ |
5420f73d | 1539 | struct varinfo *prev_var; |
f3a08f77 NC |
1540 | /* The offset of the varinfo from the start of the unit. */ |
1541 | bfd_uint64_t unit_offset; | |
1542 | /* Source location file name. */ | |
5420f73d | 1543 | char *file; |
f3a08f77 | 1544 | /* Source location line number. */ |
5420f73d | 1545 | int line; |
f3a08f77 | 1546 | /* The type of this variable. */ |
5420f73d | 1547 | int tag; |
f3a08f77 | 1548 | /* The name of the variable, if it has one. */ |
5420f73d | 1549 | char *name; |
f3a08f77 | 1550 | /* The address of the variable. */ |
5cf2e3f0 | 1551 | bfd_vma addr; |
f3a08f77 | 1552 | /* Where the symbol is defined. */ |
5420f73d | 1553 | asection *sec; |
f3a08f77 NC |
1554 | /* Is this a stack variable? */ |
1555 | bfd_boolean stack; | |
1ee24f27 DJ |
1556 | }; |
1557 | ||
d4c32a81 L |
1558 | /* Return TRUE if NEW_LINE should sort after LINE. */ |
1559 | ||
1560 | static inline bfd_boolean | |
1561 | new_line_sorts_after (struct line_info *new_line, struct line_info *line) | |
1562 | { | |
1563 | return (new_line->address > line->address | |
1564 | || (new_line->address == line->address | |
20230942 | 1565 | && new_line->op_index > line->op_index)); |
d4c32a81 L |
1566 | } |
1567 | ||
1568 | ||
af3ef9fe NC |
1569 | /* Adds a new entry to the line_info list in the line_info_table, ensuring |
1570 | that the list is sorted. Note that the line_info list is sorted from | |
1571 | highest to lowest VMA (with possible duplicates); that is, | |
1572 | line_info->prev_line always accesses an equal or smaller VMA. */ | |
1573 | ||
8af6b354 | 1574 | static bfd_boolean |
818a27ac AM |
1575 | add_line_info (struct line_info_table *table, |
1576 | bfd_vma address, | |
a233b20c | 1577 | unsigned char op_index, |
818a27ac AM |
1578 | char *filename, |
1579 | unsigned int line, | |
1580 | unsigned int column, | |
9b8d1a36 | 1581 | unsigned int discriminator, |
818a27ac | 1582 | int end_sequence) |
252b5132 | 1583 | { |
986f0783 | 1584 | size_t amt = sizeof (struct line_info); |
0ee19663 | 1585 | struct line_sequence* seq = table->sequences; |
a50b1753 | 1586 | struct line_info* info = (struct line_info *) bfd_alloc (table->abfd, amt); |
252b5132 | 1587 | |
8af6b354 AM |
1588 | if (info == NULL) |
1589 | return FALSE; | |
1590 | ||
d4c32a81 | 1591 | /* Set member data of 'info'. */ |
f5296ddc | 1592 | info->prev_line = NULL; |
d4c32a81 | 1593 | info->address = address; |
a233b20c | 1594 | info->op_index = op_index; |
d4c32a81 L |
1595 | info->line = line; |
1596 | info->column = column; | |
9b8d1a36 | 1597 | info->discriminator = discriminator; |
d4c32a81 L |
1598 | info->end_sequence = end_sequence; |
1599 | ||
1600 | if (filename && filename[0]) | |
1601 | { | |
a50b1753 | 1602 | info->filename = (char *) bfd_alloc (table->abfd, strlen (filename) + 1); |
8af6b354 AM |
1603 | if (info->filename == NULL) |
1604 | return FALSE; | |
1605 | strcpy (info->filename, filename); | |
d4c32a81 L |
1606 | } |
1607 | else | |
1608 | info->filename = NULL; | |
1609 | ||
e82ce529 AM |
1610 | /* Find the correct location for 'info'. Normally we will receive |
1611 | new line_info data 1) in order and 2) with increasing VMAs. | |
1612 | However some compilers break the rules (cf. decode_line_info) and | |
1613 | so we include some heuristics for quickly finding the correct | |
1614 | location for 'info'. In particular, these heuristics optimize for | |
1615 | the common case in which the VMA sequence that we receive is a | |
1616 | list of locally sorted VMAs such as | |
1617 | p...z a...j (where a < j < p < z) | |
252b5132 | 1618 | |
e82ce529 | 1619 | Note: table->lcl_head is used to head an *actual* or *possible* |
0ee19663 | 1620 | sub-sequence within the list (such as a...j) that is not directly |
e82ce529 AM |
1621 | headed by table->last_line |
1622 | ||
1623 | Note: we may receive duplicate entries from 'decode_line_info'. */ | |
1624 | ||
0ee19663 NC |
1625 | if (seq |
1626 | && seq->last_line->address == address | |
a233b20c | 1627 | && seq->last_line->op_index == op_index |
0ee19663 | 1628 | && seq->last_line->end_sequence == end_sequence) |
aff90a5f L |
1629 | { |
1630 | /* We only keep the last entry with the same address and end | |
1631 | sequence. See PR ld/4986. */ | |
0ee19663 | 1632 | if (table->lcl_head == seq->last_line) |
aff90a5f | 1633 | table->lcl_head = info; |
0ee19663 NC |
1634 | info->prev_line = seq->last_line->prev_line; |
1635 | seq->last_line = info; | |
aff90a5f | 1636 | } |
0ee19663 | 1637 | else if (!seq || seq->last_line->end_sequence) |
d8d1c398 | 1638 | { |
0ee19663 NC |
1639 | /* Start a new line sequence. */ |
1640 | amt = sizeof (struct line_sequence); | |
1641 | seq = (struct line_sequence *) bfd_malloc (amt); | |
8af6b354 AM |
1642 | if (seq == NULL) |
1643 | return FALSE; | |
0ee19663 NC |
1644 | seq->low_pc = address; |
1645 | seq->prev_sequence = table->sequences; | |
1646 | seq->last_line = info; | |
1647 | table->lcl_head = info; | |
1648 | table->sequences = seq; | |
1649 | table->num_sequences++; | |
1650 | } | |
20230942 AM |
1651 | else if (info->end_sequence |
1652 | || new_line_sorts_after (info, seq->last_line)) | |
0ee19663 NC |
1653 | { |
1654 | /* Normal case: add 'info' to the beginning of the current sequence. */ | |
1655 | info->prev_line = seq->last_line; | |
1656 | seq->last_line = info; | |
e82ce529 | 1657 | |
d8d1c398 AM |
1658 | /* lcl_head: initialize to head a *possible* sequence at the end. */ |
1659 | if (!table->lcl_head) | |
1660 | table->lcl_head = info; | |
1661 | } | |
1662 | else if (!new_line_sorts_after (info, table->lcl_head) | |
1663 | && (!table->lcl_head->prev_line | |
1664 | || new_line_sorts_after (info, table->lcl_head->prev_line))) | |
1665 | { | |
1666 | /* Abnormal but easy: lcl_head is the head of 'info'. */ | |
1667 | info->prev_line = table->lcl_head->prev_line; | |
1668 | table->lcl_head->prev_line = info; | |
1669 | } | |
1670 | else | |
1671 | { | |
0ee19663 NC |
1672 | /* Abnormal and hard: Neither 'last_line' nor 'lcl_head' |
1673 | are valid heads for 'info'. Reset 'lcl_head'. */ | |
1674 | struct line_info* li2 = seq->last_line; /* Always non-NULL. */ | |
d8d1c398 | 1675 | struct line_info* li1 = li2->prev_line; |
e82ce529 | 1676 | |
d8d1c398 AM |
1677 | while (li1) |
1678 | { | |
1679 | if (!new_line_sorts_after (info, li2) | |
1680 | && new_line_sorts_after (info, li1)) | |
1681 | break; | |
e82ce529 | 1682 | |
709d67f1 | 1683 | li2 = li1; /* always non-NULL */ |
d8d1c398 AM |
1684 | li1 = li1->prev_line; |
1685 | } | |
1686 | table->lcl_head = li2; | |
1687 | info->prev_line = table->lcl_head->prev_line; | |
1688 | table->lcl_head->prev_line = info; | |
0ee19663 | 1689 | if (address < seq->low_pc) |
93ee1e36 | 1690 | seq->low_pc = address; |
d8d1c398 | 1691 | } |
8af6b354 | 1692 | return TRUE; |
252b5132 RH |
1693 | } |
1694 | ||
5ed6aba4 | 1695 | /* Extract a fully qualified filename from a line info table. |
af3ef9fe NC |
1696 | The returned string has been malloc'ed and it is the caller's |
1697 | responsibility to free it. */ | |
5ed6aba4 | 1698 | |
a092b084 | 1699 | static char * |
818a27ac | 1700 | concat_filename (struct line_info_table *table, unsigned int file) |
252b5132 | 1701 | { |
f075ee0c | 1702 | char *filename; |
159002ff | 1703 | |
6327533b | 1704 | if (table == NULL || file - 1 >= table->num_files) |
159002ff | 1705 | { |
75a657ba L |
1706 | /* FILE == 0 means unknown. */ |
1707 | if (file) | |
4eca0228 | 1708 | _bfd_error_handler |
9793eb77 | 1709 | (_("DWARF error: mangled line number section (bad file number)")); |
af3ef9fe | 1710 | return strdup ("<unknown>"); |
159002ff RH |
1711 | } |
1712 | ||
1713 | filename = table->files[file - 1].name; | |
a54018b7 AM |
1714 | if (filename == NULL) |
1715 | return strdup ("<unknown>"); | |
5ed6aba4 | 1716 | |
7421a730 | 1717 | if (!IS_ABSOLUTE_PATH (filename)) |
252b5132 | 1718 | { |
608fa8d3 JB |
1719 | char *dir_name = NULL; |
1720 | char *subdir_name = NULL; | |
7421a730 AM |
1721 | char *name; |
1722 | size_t len; | |
0dafd5f6 | 1723 | |
877a8638 | 1724 | if (table->files[file - 1].dir |
dbb3fbbb NC |
1725 | /* PR 17512: file: 0317e960. */ |
1726 | && table->files[file - 1].dir <= table->num_dirs | |
877a8638 NC |
1727 | /* PR 17512: file: 7f3d2e4b. */ |
1728 | && table->dirs != NULL) | |
608fa8d3 | 1729 | subdir_name = table->dirs[table->files[file - 1].dir - 1]; |
7421a730 | 1730 | |
608fa8d3 JB |
1731 | if (!subdir_name || !IS_ABSOLUTE_PATH (subdir_name)) |
1732 | dir_name = table->comp_dir; | |
7421a730 | 1733 | |
608fa8d3 | 1734 | if (!dir_name) |
af3ef9fe | 1735 | { |
608fa8d3 JB |
1736 | dir_name = subdir_name; |
1737 | subdir_name = NULL; | |
7421a730 | 1738 | } |
af3ef9fe | 1739 | |
608fa8d3 | 1740 | if (!dir_name) |
7421a730 AM |
1741 | return strdup (filename); |
1742 | ||
608fa8d3 | 1743 | len = strlen (dir_name) + strlen (filename) + 2; |
7421a730 | 1744 | |
608fa8d3 | 1745 | if (subdir_name) |
7421a730 | 1746 | { |
608fa8d3 | 1747 | len += strlen (subdir_name) + 1; |
a50b1753 | 1748 | name = (char *) bfd_malloc (len); |
7421a730 | 1749 | if (name) |
608fa8d3 | 1750 | sprintf (name, "%s/%s/%s", dir_name, subdir_name, filename); |
7421a730 AM |
1751 | } |
1752 | else | |
1753 | { | |
a50b1753 | 1754 | name = (char *) bfd_malloc (len); |
af3ef9fe | 1755 | if (name) |
608fa8d3 | 1756 | sprintf (name, "%s/%s", dir_name, filename); |
af3ef9fe | 1757 | } |
7421a730 AM |
1758 | |
1759 | return name; | |
252b5132 | 1760 | } |
af3ef9fe NC |
1761 | |
1762 | return strdup (filename); | |
252b5132 RH |
1763 | } |
1764 | ||
8af6b354 | 1765 | static bfd_boolean |
a2a50954 | 1766 | arange_add (const struct comp_unit *unit, struct arange *first_arange, |
8af6b354 | 1767 | bfd_vma low_pc, bfd_vma high_pc) |
f623be2b RH |
1768 | { |
1769 | struct arange *arange; | |
1770 | ||
a2a50954 AM |
1771 | /* Ignore empty ranges. */ |
1772 | if (low_pc == high_pc) | |
1773 | return TRUE; | |
1774 | ||
1775 | /* If the first arange is empty, use it. */ | |
a13afe8e FF |
1776 | if (first_arange->high == 0) |
1777 | { | |
1778 | first_arange->low = low_pc; | |
1779 | first_arange->high = high_pc; | |
8af6b354 | 1780 | return TRUE; |
a13afe8e | 1781 | } |
98591c73 | 1782 | |
a13afe8e FF |
1783 | /* Next see if we can cheaply extend an existing range. */ |
1784 | arange = first_arange; | |
f623be2b RH |
1785 | do |
1786 | { | |
1787 | if (low_pc == arange->high) | |
1788 | { | |
1789 | arange->high = high_pc; | |
8af6b354 | 1790 | return TRUE; |
f623be2b RH |
1791 | } |
1792 | if (high_pc == arange->low) | |
1793 | { | |
1794 | arange->low = low_pc; | |
8af6b354 | 1795 | return TRUE; |
f623be2b RH |
1796 | } |
1797 | arange = arange->next; | |
1798 | } | |
1799 | while (arange); | |
1800 | ||
a13afe8e | 1801 | /* Need to allocate a new arange and insert it into the arange list. |
089e3718 | 1802 | Order isn't significant, so just insert after the first arange. */ |
a2a50954 | 1803 | arange = (struct arange *) bfd_alloc (unit->abfd, sizeof (*arange)); |
8af6b354 AM |
1804 | if (arange == NULL) |
1805 | return FALSE; | |
f623be2b RH |
1806 | arange->low = low_pc; |
1807 | arange->high = high_pc; | |
a13afe8e FF |
1808 | arange->next = first_arange->next; |
1809 | first_arange->next = arange; | |
8af6b354 | 1810 | return TRUE; |
f623be2b RH |
1811 | } |
1812 | ||
0ee19663 NC |
1813 | /* Compare function for line sequences. */ |
1814 | ||
1815 | static int | |
1816 | compare_sequences (const void* a, const void* b) | |
1817 | { | |
1818 | const struct line_sequence* seq1 = a; | |
1819 | const struct line_sequence* seq2 = b; | |
1820 | ||
1821 | /* Sort by low_pc as the primary key. */ | |
1822 | if (seq1->low_pc < seq2->low_pc) | |
1823 | return -1; | |
1824 | if (seq1->low_pc > seq2->low_pc) | |
1825 | return 1; | |
1826 | ||
1827 | /* If low_pc values are equal, sort in reverse order of | |
1828 | high_pc, so that the largest region comes first. */ | |
1829 | if (seq1->last_line->address < seq2->last_line->address) | |
1830 | return 1; | |
1831 | if (seq1->last_line->address > seq2->last_line->address) | |
1832 | return -1; | |
1833 | ||
a233b20c JJ |
1834 | if (seq1->last_line->op_index < seq2->last_line->op_index) |
1835 | return 1; | |
1836 | if (seq1->last_line->op_index > seq2->last_line->op_index) | |
1837 | return -1; | |
1838 | ||
8025b055 AM |
1839 | /* num_lines is initially an index, to make the sort stable. */ |
1840 | if (seq1->num_lines < seq2->num_lines) | |
1841 | return -1; | |
1842 | if (seq1->num_lines > seq2->num_lines) | |
1843 | return 1; | |
0ee19663 NC |
1844 | return 0; |
1845 | } | |
1846 | ||
089e3718 IT |
1847 | /* Construct the line information table for quick lookup. */ |
1848 | ||
1849 | static bfd_boolean | |
1850 | build_line_info_table (struct line_info_table * table, | |
1851 | struct line_sequence * seq) | |
1852 | { | |
986f0783 AM |
1853 | size_t amt; |
1854 | struct line_info **line_info_lookup; | |
1855 | struct line_info *each_line; | |
1856 | unsigned int num_lines; | |
1857 | unsigned int line_index; | |
089e3718 IT |
1858 | |
1859 | if (seq->line_info_lookup != NULL) | |
1860 | return TRUE; | |
1861 | ||
1862 | /* Count the number of line information entries. We could do this while | |
1863 | scanning the debug information, but some entries may be added via | |
1864 | lcl_head without having a sequence handy to increment the number of | |
1865 | lines. */ | |
1866 | num_lines = 0; | |
1867 | for (each_line = seq->last_line; each_line; each_line = each_line->prev_line) | |
1868 | num_lines++; | |
1869 | ||
8025b055 | 1870 | seq->num_lines = num_lines; |
089e3718 IT |
1871 | if (num_lines == 0) |
1872 | return TRUE; | |
1873 | ||
1874 | /* Allocate space for the line information lookup table. */ | |
1875 | amt = sizeof (struct line_info*) * num_lines; | |
1876 | line_info_lookup = (struct line_info**) bfd_alloc (table->abfd, amt); | |
8025b055 | 1877 | seq->line_info_lookup = line_info_lookup; |
089e3718 IT |
1878 | if (line_info_lookup == NULL) |
1879 | return FALSE; | |
1880 | ||
1881 | /* Create the line information lookup table. */ | |
b6ddcd85 | 1882 | line_index = num_lines; |
089e3718 | 1883 | for (each_line = seq->last_line; each_line; each_line = each_line->prev_line) |
b6ddcd85 | 1884 | line_info_lookup[--line_index] = each_line; |
089e3718 | 1885 | |
b6ddcd85 | 1886 | BFD_ASSERT (line_index == 0); |
089e3718 IT |
1887 | return TRUE; |
1888 | } | |
1889 | ||
0ee19663 NC |
1890 | /* Sort the line sequences for quick lookup. */ |
1891 | ||
8af6b354 | 1892 | static bfd_boolean |
0ee19663 NC |
1893 | sort_line_sequences (struct line_info_table* table) |
1894 | { | |
986f0783 AM |
1895 | size_t amt; |
1896 | struct line_sequence *sequences; | |
1897 | struct line_sequence *seq; | |
1898 | unsigned int n = 0; | |
1899 | unsigned int num_sequences = table->num_sequences; | |
1900 | bfd_vma last_high_pc; | |
0ee19663 NC |
1901 | |
1902 | if (num_sequences == 0) | |
8af6b354 | 1903 | return TRUE; |
0ee19663 NC |
1904 | |
1905 | /* Allocate space for an array of sequences. */ | |
1906 | amt = sizeof (struct line_sequence) * num_sequences; | |
1907 | sequences = (struct line_sequence *) bfd_alloc (table->abfd, amt); | |
8af6b354 AM |
1908 | if (sequences == NULL) |
1909 | return FALSE; | |
0ee19663 NC |
1910 | |
1911 | /* Copy the linked list into the array, freeing the original nodes. */ | |
1912 | seq = table->sequences; | |
1913 | for (n = 0; n < num_sequences; n++) | |
1914 | { | |
1915 | struct line_sequence* last_seq = seq; | |
1916 | ||
1917 | BFD_ASSERT (seq); | |
1918 | sequences[n].low_pc = seq->low_pc; | |
1919 | sequences[n].prev_sequence = NULL; | |
1920 | sequences[n].last_line = seq->last_line; | |
089e3718 | 1921 | sequences[n].line_info_lookup = NULL; |
8025b055 | 1922 | sequences[n].num_lines = n; |
0ee19663 NC |
1923 | seq = seq->prev_sequence; |
1924 | free (last_seq); | |
1925 | } | |
1926 | BFD_ASSERT (seq == NULL); | |
1927 | ||
1928 | qsort (sequences, n, sizeof (struct line_sequence), compare_sequences); | |
1929 | ||
1930 | /* Make the list binary-searchable by trimming overlapping entries | |
1931 | and removing nested entries. */ | |
1932 | num_sequences = 1; | |
1933 | last_high_pc = sequences[0].last_line->address; | |
1934 | for (n = 1; n < table->num_sequences; n++) | |
1935 | { | |
1936 | if (sequences[n].low_pc < last_high_pc) | |
93ee1e36 | 1937 | { |
0ee19663 NC |
1938 | if (sequences[n].last_line->address <= last_high_pc) |
1939 | /* Skip nested entries. */ | |
1940 | continue; | |
1941 | ||
1942 | /* Trim overlapping entries. */ | |
1943 | sequences[n].low_pc = last_high_pc; | |
93ee1e36 | 1944 | } |
0ee19663 NC |
1945 | last_high_pc = sequences[n].last_line->address; |
1946 | if (n > num_sequences) | |
93ee1e36 AM |
1947 | { |
1948 | /* Close up the gap. */ | |
1949 | sequences[num_sequences].low_pc = sequences[n].low_pc; | |
1950 | sequences[num_sequences].last_line = sequences[n].last_line; | |
1951 | } | |
0ee19663 NC |
1952 | num_sequences++; |
1953 | } | |
1954 | ||
1955 | table->sequences = sequences; | |
1956 | table->num_sequences = num_sequences; | |
8af6b354 | 1957 | return TRUE; |
0ee19663 NC |
1958 | } |
1959 | ||
0041f7df JK |
1960 | /* Add directory to TABLE. CUR_DIR memory ownership is taken by TABLE. */ |
1961 | ||
1962 | static bfd_boolean | |
1963 | line_info_add_include_dir (struct line_info_table *table, char *cur_dir) | |
1964 | { | |
1965 | if ((table->num_dirs % DIR_ALLOC_CHUNK) == 0) | |
1966 | { | |
1967 | char **tmp; | |
986f0783 | 1968 | size_t amt; |
0041f7df JK |
1969 | |
1970 | amt = table->num_dirs + DIR_ALLOC_CHUNK; | |
1971 | amt *= sizeof (char *); | |
1972 | ||
1973 | tmp = (char **) bfd_realloc (table->dirs, amt); | |
1974 | if (tmp == NULL) | |
1975 | return FALSE; | |
1976 | table->dirs = tmp; | |
1977 | } | |
1978 | ||
1979 | table->dirs[table->num_dirs++] = cur_dir; | |
1980 | return TRUE; | |
1981 | } | |
1982 | ||
1983 | static bfd_boolean | |
1984 | line_info_add_include_dir_stub (struct line_info_table *table, char *cur_dir, | |
1985 | unsigned int dir ATTRIBUTE_UNUSED, | |
1d827a72 | 1986 | unsigned int xtime ATTRIBUTE_UNUSED, |
0041f7df JK |
1987 | unsigned int size ATTRIBUTE_UNUSED) |
1988 | { | |
1989 | return line_info_add_include_dir (table, cur_dir); | |
1990 | } | |
1991 | ||
1992 | /* Add file to TABLE. CUR_FILE memory ownership is taken by TABLE. */ | |
1993 | ||
1994 | static bfd_boolean | |
1995 | line_info_add_file_name (struct line_info_table *table, char *cur_file, | |
1d827a72 L |
1996 | unsigned int dir, unsigned int xtime, |
1997 | unsigned int size) | |
0041f7df JK |
1998 | { |
1999 | if ((table->num_files % FILE_ALLOC_CHUNK) == 0) | |
2000 | { | |
2001 | struct fileinfo *tmp; | |
986f0783 | 2002 | size_t amt; |
0041f7df JK |
2003 | |
2004 | amt = table->num_files + FILE_ALLOC_CHUNK; | |
2005 | amt *= sizeof (struct fileinfo); | |
2006 | ||
2007 | tmp = (struct fileinfo *) bfd_realloc (table->files, amt); | |
2008 | if (tmp == NULL) | |
2009 | return FALSE; | |
2010 | table->files = tmp; | |
2011 | } | |
2012 | ||
2013 | table->files[table->num_files].name = cur_file; | |
2014 | table->files[table->num_files].dir = dir; | |
1d827a72 | 2015 | table->files[table->num_files].time = xtime; |
0041f7df JK |
2016 | table->files[table->num_files].size = size; |
2017 | table->num_files++; | |
2018 | return TRUE; | |
2019 | } | |
2020 | ||
2021 | /* Read directory or file name entry format, starting with byte of | |
2022 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
2023 | entries count and the entries themselves in the described entry | |
2024 | format. */ | |
2025 | ||
2026 | static bfd_boolean | |
2027 | read_formatted_entries (struct comp_unit *unit, bfd_byte **bufp, | |
2028 | bfd_byte *buf_end, struct line_info_table *table, | |
2029 | bfd_boolean (*callback) (struct line_info_table *table, | |
2030 | char *cur_file, | |
2031 | unsigned int dir, | |
2032 | unsigned int time, | |
2033 | unsigned int size)) | |
2034 | { | |
2035 | bfd *abfd = unit->abfd; | |
2036 | bfd_byte format_count, formati; | |
2037 | bfd_vma data_count, datai; | |
2038 | bfd_byte *buf = *bufp; | |
2039 | bfd_byte *format_header_data; | |
2040 | unsigned int bytes_read; | |
2041 | ||
2042 | format_count = read_1_byte (abfd, buf, buf_end); | |
2043 | buf += 1; | |
2044 | format_header_data = buf; | |
2045 | for (formati = 0; formati < format_count; formati++) | |
2046 | { | |
2047 | _bfd_safe_read_leb128 (abfd, buf, &bytes_read, FALSE, buf_end); | |
2048 | buf += bytes_read; | |
2049 | _bfd_safe_read_leb128 (abfd, buf, &bytes_read, FALSE, buf_end); | |
2050 | buf += bytes_read; | |
2051 | } | |
2052 | ||
2053 | data_count = _bfd_safe_read_leb128 (abfd, buf, &bytes_read, FALSE, buf_end); | |
2054 | buf += bytes_read; | |
c361faae AM |
2055 | if (format_count == 0 && data_count != 0) |
2056 | { | |
9793eb77 | 2057 | _bfd_error_handler (_("DWARF error: zero format count")); |
c361faae AM |
2058 | bfd_set_error (bfd_error_bad_value); |
2059 | return FALSE; | |
2060 | } | |
2061 | ||
30d0157a NC |
2062 | /* PR 22210. Paranoia check. Don't bother running the loop |
2063 | if we know that we are going to run out of buffer. */ | |
2064 | if (data_count > (bfd_vma) (buf_end - buf)) | |
2065 | { | |
2dcf00ce | 2066 | _bfd_error_handler |
9793eb77 | 2067 | (_("DWARF error: data count (%" PRIx64 ") larger than buffer size"), |
2dcf00ce | 2068 | (uint64_t) data_count); |
30d0157a NC |
2069 | bfd_set_error (bfd_error_bad_value); |
2070 | return FALSE; | |
2071 | } | |
2072 | ||
0041f7df JK |
2073 | for (datai = 0; datai < data_count; datai++) |
2074 | { | |
2075 | bfd_byte *format = format_header_data; | |
2076 | struct fileinfo fe; | |
2077 | ||
a54018b7 | 2078 | memset (&fe, 0, sizeof fe); |
0041f7df JK |
2079 | for (formati = 0; formati < format_count; formati++) |
2080 | { | |
2081 | bfd_vma content_type, form; | |
2082 | char *string_trash; | |
2083 | char **stringp = &string_trash; | |
2084 | unsigned int uint_trash, *uintp = &uint_trash; | |
33e0a9a0 | 2085 | struct attribute attr; |
0041f7df JK |
2086 | |
2087 | content_type = _bfd_safe_read_leb128 (abfd, format, &bytes_read, | |
2088 | FALSE, buf_end); | |
2089 | format += bytes_read; | |
2090 | switch (content_type) | |
2091 | { | |
2092 | case DW_LNCT_path: | |
2093 | stringp = &fe.name; | |
2094 | break; | |
2095 | case DW_LNCT_directory_index: | |
2096 | uintp = &fe.dir; | |
2097 | break; | |
2098 | case DW_LNCT_timestamp: | |
2099 | uintp = &fe.time; | |
2100 | break; | |
2101 | case DW_LNCT_size: | |
2102 | uintp = &fe.size; | |
2103 | break; | |
2104 | case DW_LNCT_MD5: | |
2105 | break; | |
2106 | default: | |
2107 | _bfd_error_handler | |
9793eb77 | 2108 | (_("DWARF error: unknown format content type %" PRIu64), |
2dcf00ce | 2109 | (uint64_t) content_type); |
0041f7df JK |
2110 | bfd_set_error (bfd_error_bad_value); |
2111 | return FALSE; | |
2112 | } | |
2113 | ||
2114 | form = _bfd_safe_read_leb128 (abfd, format, &bytes_read, FALSE, | |
2115 | buf_end); | |
2116 | format += bytes_read; | |
33e0a9a0 AM |
2117 | |
2118 | buf = read_attribute_value (&attr, form, 0, unit, buf, buf_end); | |
2119 | if (buf == NULL) | |
2120 | return FALSE; | |
0041f7df JK |
2121 | switch (form) |
2122 | { | |
2123 | case DW_FORM_string: | |
0041f7df | 2124 | case DW_FORM_line_strp: |
33e0a9a0 | 2125 | *stringp = attr.u.str; |
0041f7df JK |
2126 | break; |
2127 | ||
2128 | case DW_FORM_data1: | |
0041f7df | 2129 | case DW_FORM_data2: |
0041f7df | 2130 | case DW_FORM_data4: |
0041f7df | 2131 | case DW_FORM_data8: |
0041f7df | 2132 | case DW_FORM_udata: |
33e0a9a0 | 2133 | *uintp = attr.u.val; |
0041f7df | 2134 | break; |
19d80e5f MW |
2135 | |
2136 | case DW_FORM_data16: | |
2137 | /* MD5 data is in the attr.blk, but we are ignoring those. */ | |
2138 | break; | |
0041f7df JK |
2139 | } |
2140 | } | |
2141 | ||
19d80e5f MW |
2142 | /* Skip the first "zero entry", which is the compilation dir/file. */ |
2143 | if (datai != 0) | |
2144 | if (!callback (table, fe.name, fe.dir, fe.time, fe.size)) | |
2145 | return FALSE; | |
0041f7df JK |
2146 | } |
2147 | ||
2148 | *bufp = buf; | |
2149 | return TRUE; | |
2150 | } | |
2151 | ||
34b5e0b2 | 2152 | /* Decode the line number information for UNIT. */ |
252b5132 | 2153 | |
34b5e0b2 | 2154 | static struct line_info_table* |
99b06c60 | 2155 | decode_line_info (struct comp_unit *unit) |
252b5132 RH |
2156 | { |
2157 | bfd *abfd = unit->abfd; | |
99b06c60 AM |
2158 | struct dwarf2_debug *stash = unit->stash; |
2159 | struct dwarf2_debug_file *file = unit->file; | |
252b5132 | 2160 | struct line_info_table* table; |
f075ee0c AM |
2161 | bfd_byte *line_ptr; |
2162 | bfd_byte *line_end; | |
252b5132 | 2163 | struct line_head lh; |
d03ba2a1 | 2164 | unsigned int i, bytes_read, offset_size; |
252b5132 RH |
2165 | char *cur_file, *cur_dir; |
2166 | unsigned char op_code, extended_op, adj_opcode; | |
fec16237 | 2167 | unsigned int exop_len; |
986f0783 | 2168 | size_t amt; |
252b5132 | 2169 | |
e63ef095 AM |
2170 | if (unit->line_offset == 0 && file->line_table) |
2171 | return file->line_table; | |
2172 | ||
fc28f9aa | 2173 | if (! read_section (abfd, &stash->debug_sections[debug_line], |
99b06c60 AM |
2174 | file->syms, unit->line_offset, |
2175 | &file->dwarf_line_buffer, &file->dwarf_line_size)) | |
8af6b354 | 2176 | return NULL; |
ccdb16fc | 2177 | |
99b06c60 | 2178 | if (file->dwarf_line_size < 16) |
dbb3fbbb | 2179 | { |
4eca0228 | 2180 | _bfd_error_handler |
9793eb77 | 2181 | (_("DWARF error: line info section is too small (%" PRId64 ")"), |
99b06c60 | 2182 | (int64_t) file->dwarf_line_size); |
dbb3fbbb NC |
2183 | bfd_set_error (bfd_error_bad_value); |
2184 | return NULL; | |
2185 | } | |
99b06c60 AM |
2186 | line_ptr = file->dwarf_line_buffer + unit->line_offset; |
2187 | line_end = file->dwarf_line_buffer + file->dwarf_line_size; | |
252b5132 | 2188 | |
a092b084 | 2189 | /* Read in the prologue. */ |
dbb3fbbb | 2190 | lh.total_length = read_4_bytes (abfd, line_ptr, line_end); |
91a4d569 AM |
2191 | line_ptr += 4; |
2192 | offset_size = 4; | |
2193 | if (lh.total_length == 0xffffffff) | |
dae2dd0d | 2194 | { |
dbb3fbbb | 2195 | lh.total_length = read_8_bytes (abfd, line_ptr, line_end); |
dae2dd0d NC |
2196 | line_ptr += 8; |
2197 | offset_size = 8; | |
2198 | } | |
91a4d569 | 2199 | else if (lh.total_length == 0 && unit->addr_size == 8) |
d03ba2a1 | 2200 | { |
91a4d569 | 2201 | /* Handle (non-standard) 64-bit DWARF2 formats. */ |
dbb3fbbb | 2202 | lh.total_length = read_4_bytes (abfd, line_ptr, line_end); |
91a4d569 | 2203 | line_ptr += 4; |
d03ba2a1 JJ |
2204 | offset_size = 8; |
2205 | } | |
dbb3fbbb | 2206 | |
515f23e6 | 2207 | if (lh.total_length > (size_t) (line_end - line_ptr)) |
dbb3fbbb | 2208 | { |
4eca0228 | 2209 | _bfd_error_handler |
695344c0 | 2210 | /* xgettext: c-format */ |
9793eb77 | 2211 | (_("DWARF error: line info data is bigger (%#" PRIx64 ")" |
515f23e6 | 2212 | " than the space remaining in the section (%#lx)"), |
2dcf00ce | 2213 | (uint64_t) lh.total_length, (unsigned long) (line_end - line_ptr)); |
dbb3fbbb NC |
2214 | bfd_set_error (bfd_error_bad_value); |
2215 | return NULL; | |
2216 | } | |
62f8d217 | 2217 | |
252b5132 | 2218 | line_end = line_ptr + lh.total_length; |
62f8d217 | 2219 | |
dbb3fbbb | 2220 | lh.version = read_2_bytes (abfd, line_ptr, line_end); |
0041f7df | 2221 | if (lh.version < 2 || lh.version > 5) |
a233b20c | 2222 | { |
4eca0228 | 2223 | _bfd_error_handler |
9793eb77 | 2224 | (_("DWARF error: unhandled .debug_line version %d"), lh.version); |
a233b20c JJ |
2225 | bfd_set_error (bfd_error_bad_value); |
2226 | return NULL; | |
2227 | } | |
252b5132 | 2228 | line_ptr += 2; |
dbb3fbbb | 2229 | |
0041f7df JK |
2230 | if (line_ptr + offset_size + (lh.version >= 5 ? 8 : (lh.version >= 4 ? 6 : 5)) |
2231 | >= line_end) | |
dbb3fbbb | 2232 | { |
4eca0228 | 2233 | _bfd_error_handler |
9793eb77 | 2234 | (_("DWARF error: ran out of room reading prologue")); |
dbb3fbbb NC |
2235 | bfd_set_error (bfd_error_bad_value); |
2236 | return NULL; | |
2237 | } | |
2238 | ||
0041f7df JK |
2239 | if (lh.version >= 5) |
2240 | { | |
2241 | unsigned int segment_selector_size; | |
2242 | ||
2243 | /* Skip address size. */ | |
2244 | read_1_byte (abfd, line_ptr, line_end); | |
2245 | line_ptr += 1; | |
2246 | ||
2247 | segment_selector_size = read_1_byte (abfd, line_ptr, line_end); | |
2248 | line_ptr += 1; | |
2249 | if (segment_selector_size != 0) | |
2250 | { | |
2251 | _bfd_error_handler | |
9793eb77 | 2252 | (_("DWARF error: line info unsupported segment selector size %u"), |
0041f7df JK |
2253 | segment_selector_size); |
2254 | bfd_set_error (bfd_error_bad_value); | |
2255 | return NULL; | |
2256 | } | |
2257 | } | |
2258 | ||
d03ba2a1 | 2259 | if (offset_size == 4) |
dbb3fbbb | 2260 | lh.prologue_length = read_4_bytes (abfd, line_ptr, line_end); |
d03ba2a1 | 2261 | else |
dbb3fbbb | 2262 | lh.prologue_length = read_8_bytes (abfd, line_ptr, line_end); |
d03ba2a1 | 2263 | line_ptr += offset_size; |
dbb3fbbb NC |
2264 | |
2265 | lh.minimum_instruction_length = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2266 | line_ptr += 1; |
dbb3fbbb | 2267 | |
a233b20c JJ |
2268 | if (lh.version >= 4) |
2269 | { | |
dbb3fbbb | 2270 | lh.maximum_ops_per_insn = read_1_byte (abfd, line_ptr, line_end); |
a233b20c JJ |
2271 | line_ptr += 1; |
2272 | } | |
2273 | else | |
2274 | lh.maximum_ops_per_insn = 1; | |
dbb3fbbb | 2275 | |
a233b20c JJ |
2276 | if (lh.maximum_ops_per_insn == 0) |
2277 | { | |
4eca0228 | 2278 | _bfd_error_handler |
9793eb77 | 2279 | (_("DWARF error: invalid maximum operations per instruction")); |
a233b20c JJ |
2280 | bfd_set_error (bfd_error_bad_value); |
2281 | return NULL; | |
2282 | } | |
dbb3fbbb NC |
2283 | |
2284 | lh.default_is_stmt = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2285 | line_ptr += 1; |
dbb3fbbb NC |
2286 | |
2287 | lh.line_base = read_1_signed_byte (abfd, line_ptr, line_end); | |
252b5132 | 2288 | line_ptr += 1; |
dbb3fbbb NC |
2289 | |
2290 | lh.line_range = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2291 | line_ptr += 1; |
dbb3fbbb NC |
2292 | |
2293 | lh.opcode_base = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2294 | line_ptr += 1; |
dbb3fbbb NC |
2295 | |
2296 | if (line_ptr + (lh.opcode_base - 1) >= line_end) | |
2297 | { | |
9793eb77 | 2298 | _bfd_error_handler (_("DWARF error: ran out of room reading opcodes")); |
dbb3fbbb NC |
2299 | bfd_set_error (bfd_error_bad_value); |
2300 | return NULL; | |
2301 | } | |
62f8d217 | 2302 | |
dc810e39 | 2303 | amt = lh.opcode_base * sizeof (unsigned char); |
a50b1753 | 2304 | lh.standard_opcode_lengths = (unsigned char *) bfd_alloc (abfd, amt); |
252b5132 RH |
2305 | |
2306 | lh.standard_opcode_lengths[0] = 1; | |
98591c73 | 2307 | |
252b5132 RH |
2308 | for (i = 1; i < lh.opcode_base; ++i) |
2309 | { | |
dbb3fbbb | 2310 | lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr, line_end); |
252b5132 RH |
2311 | line_ptr += 1; |
2312 | } | |
2313 | ||
e63ef095 AM |
2314 | amt = sizeof (struct line_info_table); |
2315 | table = (struct line_info_table *) bfd_alloc (abfd, amt); | |
2316 | if (table == NULL) | |
2317 | return NULL; | |
2318 | table->abfd = abfd; | |
2319 | table->comp_dir = unit->comp_dir; | |
2320 | ||
2321 | table->num_files = 0; | |
2322 | table->files = NULL; | |
2323 | ||
2324 | table->num_dirs = 0; | |
2325 | table->dirs = NULL; | |
2326 | ||
2327 | table->num_sequences = 0; | |
2328 | table->sequences = NULL; | |
2329 | ||
2330 | table->lcl_head = NULL; | |
2331 | ||
0041f7df | 2332 | if (lh.version >= 5) |
252b5132 | 2333 | { |
0041f7df JK |
2334 | /* Read directory table. */ |
2335 | if (!read_formatted_entries (unit, &line_ptr, line_end, table, | |
2336 | line_info_add_include_dir_stub)) | |
2337 | goto fail; | |
98591c73 | 2338 | |
0041f7df JK |
2339 | /* Read file name table. */ |
2340 | if (!read_formatted_entries (unit, &line_ptr, line_end, table, | |
2341 | line_info_add_file_name)) | |
2342 | goto fail; | |
2343 | } | |
2344 | else | |
2345 | { | |
2346 | /* Read directory table. */ | |
2347 | while ((cur_dir = read_string (abfd, line_ptr, line_end, &bytes_read)) != NULL) | |
252b5132 | 2348 | { |
0041f7df | 2349 | line_ptr += bytes_read; |
35330cce | 2350 | |
0041f7df | 2351 | if (!line_info_add_include_dir (table, cur_dir)) |
8af6b354 | 2352 | goto fail; |
252b5132 | 2353 | } |
98591c73 | 2354 | |
252b5132 | 2355 | line_ptr += bytes_read; |
98591c73 | 2356 | |
0041f7df JK |
2357 | /* Read file name table. */ |
2358 | while ((cur_file = read_string (abfd, line_ptr, line_end, &bytes_read)) != NULL) | |
252b5132 | 2359 | { |
1d827a72 | 2360 | unsigned int dir, xtime, size; |
0041f7df JK |
2361 | |
2362 | line_ptr += bytes_read; | |
35330cce | 2363 | |
0041f7df JK |
2364 | dir = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, FALSE, line_end); |
2365 | line_ptr += bytes_read; | |
1d827a72 | 2366 | xtime = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, FALSE, line_end); |
0041f7df JK |
2367 | line_ptr += bytes_read; |
2368 | size = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, FALSE, line_end); | |
2369 | line_ptr += bytes_read; | |
35330cce | 2370 | |
1d827a72 | 2371 | if (!line_info_add_file_name (table, cur_file, dir, xtime, size)) |
8af6b354 | 2372 | goto fail; |
252b5132 | 2373 | } |
98591c73 | 2374 | |
252b5132 | 2375 | line_ptr += bytes_read; |
252b5132 | 2376 | } |
98591c73 | 2377 | |
252b5132 RH |
2378 | /* Read the statement sequences until there's nothing left. */ |
2379 | while (line_ptr < line_end) | |
2380 | { | |
a092b084 | 2381 | /* State machine registers. */ |
252b5132 | 2382 | bfd_vma address = 0; |
a233b20c | 2383 | unsigned char op_index = 0; |
8bfd78b3 | 2384 | char * filename = table->num_files ? concat_filename (table, 1) : NULL; |
252b5132 RH |
2385 | unsigned int line = 1; |
2386 | unsigned int column = 0; | |
9b8d1a36 | 2387 | unsigned int discriminator = 0; |
252b5132 | 2388 | int is_stmt = lh.default_is_stmt; |
e2f6d277 | 2389 | int end_sequence = 0; |
a54018b7 | 2390 | unsigned int dir, xtime, size; |
e2f6d277 | 2391 | /* eraxxon@alumni.rice.edu: Against the DWARF2 specs, some |
e82ce529 AM |
2392 | compilers generate address sequences that are wildly out of |
2393 | order using DW_LNE_set_address (e.g. Intel C++ 6.0 compiler | |
2394 | for ia64-Linux). Thus, to determine the low and high | |
2395 | address, we must compare on every DW_LNS_copy, etc. */ | |
75758e9d | 2396 | bfd_vma low_pc = (bfd_vma) -1; |
e2f6d277 | 2397 | bfd_vma high_pc = 0; |
252b5132 | 2398 | |
a092b084 | 2399 | /* Decode the table. */ |
e338894d | 2400 | while (!end_sequence && line_ptr < line_end) |
252b5132 | 2401 | { |
dbb3fbbb | 2402 | op_code = read_1_byte (abfd, line_ptr, line_end); |
252b5132 | 2403 | line_ptr += 1; |
98591c73 | 2404 | |
1a509dcc | 2405 | if (op_code >= lh.opcode_base) |
e2f6d277 NC |
2406 | { |
2407 | /* Special operand. */ | |
1a509dcc | 2408 | adj_opcode = op_code - lh.opcode_base; |
dbb3fbbb NC |
2409 | if (lh.line_range == 0) |
2410 | goto line_fail; | |
a233b20c | 2411 | if (lh.maximum_ops_per_insn == 1) |
a2a50954 AM |
2412 | address += (adj_opcode / lh.line_range |
2413 | * lh.minimum_instruction_length); | |
a233b20c JJ |
2414 | else |
2415 | { | |
a2a50954 AM |
2416 | address += ((op_index + adj_opcode / lh.line_range) |
2417 | / lh.maximum_ops_per_insn | |
2418 | * lh.minimum_instruction_length); | |
2419 | op_index = ((op_index + adj_opcode / lh.line_range) | |
2420 | % lh.maximum_ops_per_insn); | |
a233b20c | 2421 | } |
1a509dcc GK |
2422 | line += lh.line_base + (adj_opcode % lh.line_range); |
2423 | /* Append row to matrix using current values. */ | |
a233b20c | 2424 | if (!add_line_info (table, address, op_index, filename, |
9b8d1a36 | 2425 | line, column, discriminator, 0)) |
8af6b354 | 2426 | goto line_fail; |
93ee1e36 | 2427 | discriminator = 0; |
75758e9d AM |
2428 | if (address < low_pc) |
2429 | low_pc = address; | |
e2f6d277 NC |
2430 | if (address > high_pc) |
2431 | high_pc = address; | |
1a509dcc GK |
2432 | } |
2433 | else switch (op_code) | |
252b5132 RH |
2434 | { |
2435 | case DW_LNS_extended_op: | |
4265548c PA |
2436 | exop_len = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2437 | FALSE, line_end); | |
fec16237 | 2438 | line_ptr += bytes_read; |
dbb3fbbb | 2439 | extended_op = read_1_byte (abfd, line_ptr, line_end); |
252b5132 | 2440 | line_ptr += 1; |
e2f6d277 | 2441 | |
252b5132 RH |
2442 | switch (extended_op) |
2443 | { | |
2444 | case DW_LNE_end_sequence: | |
2445 | end_sequence = 1; | |
9b8d1a36 CC |
2446 | if (!add_line_info (table, address, op_index, filename, line, |
2447 | column, discriminator, end_sequence)) | |
8af6b354 | 2448 | goto line_fail; |
93ee1e36 | 2449 | discriminator = 0; |
75758e9d AM |
2450 | if (address < low_pc) |
2451 | low_pc = address; | |
e2f6d277 NC |
2452 | if (address > high_pc) |
2453 | high_pc = address; | |
a2a50954 | 2454 | if (!arange_add (unit, &unit->arange, low_pc, high_pc)) |
8af6b354 | 2455 | goto line_fail; |
252b5132 RH |
2456 | break; |
2457 | case DW_LNE_set_address: | |
dbb3fbbb | 2458 | address = read_address (unit, line_ptr, line_end); |
a233b20c | 2459 | op_index = 0; |
252b5132 RH |
2460 | line_ptr += unit->addr_size; |
2461 | break; | |
2462 | case DW_LNE_define_file: | |
dbb3fbbb | 2463 | cur_file = read_string (abfd, line_ptr, line_end, &bytes_read); |
252b5132 | 2464 | line_ptr += bytes_read; |
a54018b7 AM |
2465 | dir = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2466 | FALSE, line_end); | |
252b5132 | 2467 | line_ptr += bytes_read; |
a54018b7 AM |
2468 | xtime = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2469 | FALSE, line_end); | |
252b5132 | 2470 | line_ptr += bytes_read; |
a54018b7 AM |
2471 | size = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2472 | FALSE, line_end); | |
252b5132 | 2473 | line_ptr += bytes_read; |
a54018b7 AM |
2474 | if (!line_info_add_file_name (table, cur_file, dir, |
2475 | xtime, size)) | |
2476 | goto line_fail; | |
252b5132 | 2477 | break; |
9e1f7c0e | 2478 | case DW_LNE_set_discriminator: |
9b8d1a36 | 2479 | discriminator = |
4265548c PA |
2480 | _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2481 | FALSE, line_end); | |
9e1f7c0e DK |
2482 | line_ptr += bytes_read; |
2483 | break; | |
a2a50954 AM |
2484 | case DW_LNE_HP_source_file_correlation: |
2485 | line_ptr += exop_len - 1; | |
2486 | break; | |
252b5132 | 2487 | default: |
4eca0228 | 2488 | _bfd_error_handler |
9793eb77 | 2489 | (_("DWARF error: mangled line number section")); |
252b5132 | 2490 | bfd_set_error (bfd_error_bad_value); |
8af6b354 | 2491 | line_fail: |
c9594989 | 2492 | free (filename); |
8af6b354 | 2493 | goto fail; |
252b5132 RH |
2494 | } |
2495 | break; | |
2496 | case DW_LNS_copy: | |
a233b20c | 2497 | if (!add_line_info (table, address, op_index, |
9b8d1a36 | 2498 | filename, line, column, discriminator, 0)) |
8af6b354 | 2499 | goto line_fail; |
93ee1e36 | 2500 | discriminator = 0; |
75758e9d AM |
2501 | if (address < low_pc) |
2502 | low_pc = address; | |
e2f6d277 NC |
2503 | if (address > high_pc) |
2504 | high_pc = address; | |
252b5132 RH |
2505 | break; |
2506 | case DW_LNS_advance_pc: | |
a233b20c | 2507 | if (lh.maximum_ops_per_insn == 1) |
a2a50954 | 2508 | address += (lh.minimum_instruction_length |
4265548c PA |
2509 | * _bfd_safe_read_leb128 (abfd, line_ptr, |
2510 | &bytes_read, | |
2511 | FALSE, line_end)); | |
a233b20c JJ |
2512 | else |
2513 | { | |
4265548c PA |
2514 | bfd_vma adjust = _bfd_safe_read_leb128 (abfd, line_ptr, |
2515 | &bytes_read, | |
2516 | FALSE, line_end); | |
a2a50954 AM |
2517 | address = ((op_index + adjust) / lh.maximum_ops_per_insn |
2518 | * lh.minimum_instruction_length); | |
a233b20c JJ |
2519 | op_index = (op_index + adjust) % lh.maximum_ops_per_insn; |
2520 | } | |
252b5132 RH |
2521 | line_ptr += bytes_read; |
2522 | break; | |
2523 | case DW_LNS_advance_line: | |
4265548c PA |
2524 | line += _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2525 | TRUE, line_end); | |
252b5132 RH |
2526 | line_ptr += bytes_read; |
2527 | break; | |
2528 | case DW_LNS_set_file: | |
2529 | { | |
99b06c60 | 2530 | unsigned int filenum; |
252b5132 | 2531 | |
e2f6d277 NC |
2532 | /* The file and directory tables are 0 |
2533 | based, the references are 1 based. */ | |
99b06c60 AM |
2534 | filenum = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2535 | FALSE, line_end); | |
252b5132 | 2536 | line_ptr += bytes_read; |
c9594989 | 2537 | free (filename); |
99b06c60 | 2538 | filename = concat_filename (table, filenum); |
252b5132 RH |
2539 | break; |
2540 | } | |
2541 | case DW_LNS_set_column: | |
4265548c PA |
2542 | column = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2543 | FALSE, line_end); | |
252b5132 RH |
2544 | line_ptr += bytes_read; |
2545 | break; | |
2546 | case DW_LNS_negate_stmt: | |
2547 | is_stmt = (!is_stmt); | |
2548 | break; | |
2549 | case DW_LNS_set_basic_block: | |
252b5132 RH |
2550 | break; |
2551 | case DW_LNS_const_add_pc: | |
d8010d3e AM |
2552 | if (lh.line_range == 0) |
2553 | goto line_fail; | |
a233b20c | 2554 | if (lh.maximum_ops_per_insn == 1) |
a2a50954 AM |
2555 | address += (lh.minimum_instruction_length |
2556 | * ((255 - lh.opcode_base) / lh.line_range)); | |
a233b20c JJ |
2557 | else |
2558 | { | |
2559 | bfd_vma adjust = ((255 - lh.opcode_base) / lh.line_range); | |
a2a50954 AM |
2560 | address += (lh.minimum_instruction_length |
2561 | * ((op_index + adjust) | |
2562 | / lh.maximum_ops_per_insn)); | |
a233b20c JJ |
2563 | op_index = (op_index + adjust) % lh.maximum_ops_per_insn; |
2564 | } | |
252b5132 RH |
2565 | break; |
2566 | case DW_LNS_fixed_advance_pc: | |
dbb3fbbb | 2567 | address += read_2_bytes (abfd, line_ptr, line_end); |
a233b20c | 2568 | op_index = 0; |
252b5132 RH |
2569 | line_ptr += 2; |
2570 | break; | |
1a509dcc | 2571 | default: |
91d6fa6a NC |
2572 | /* Unknown standard opcode, ignore it. */ |
2573 | for (i = 0; i < lh.standard_opcode_lengths[op_code]; i++) | |
2574 | { | |
4265548c PA |
2575 | (void) _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2576 | FALSE, line_end); | |
91d6fa6a NC |
2577 | line_ptr += bytes_read; |
2578 | } | |
2579 | break; | |
252b5132 RH |
2580 | } |
2581 | } | |
5ed6aba4 | 2582 | |
c9594989 | 2583 | free (filename); |
252b5132 RH |
2584 | } |
2585 | ||
e63ef095 AM |
2586 | if (unit->line_offset == 0) |
2587 | file->line_table = table; | |
8af6b354 AM |
2588 | if (sort_line_sequences (table)) |
2589 | return table; | |
0ee19663 | 2590 | |
8af6b354 | 2591 | fail: |
a26a013f AM |
2592 | while (table->sequences != NULL) |
2593 | { | |
2594 | struct line_sequence* seq = table->sequences; | |
2595 | table->sequences = table->sequences->prev_sequence; | |
2596 | free (seq); | |
2597 | } | |
c9594989 AM |
2598 | free (table->files); |
2599 | free (table->dirs); | |
8af6b354 | 2600 | return NULL; |
252b5132 RH |
2601 | } |
2602 | ||
240d6706 NC |
2603 | /* If ADDR is within TABLE set the output parameters and return the |
2604 | range of addresses covered by the entry used to fill them out. | |
2605 | Otherwise set * FILENAME_PTR to NULL and return 0. | |
2606 | The parameters FILENAME_PTR, LINENUMBER_PTR and DISCRIMINATOR_PTR | |
2607 | are pointers to the objects to be filled in. */ | |
252b5132 | 2608 | |
240d6706 | 2609 | static bfd_vma |
818a27ac AM |
2610 | lookup_address_in_line_info_table (struct line_info_table *table, |
2611 | bfd_vma addr, | |
818a27ac | 2612 | const char **filename_ptr, |
9b8d1a36 CC |
2613 | unsigned int *linenumber_ptr, |
2614 | unsigned int *discriminator_ptr) | |
252b5132 | 2615 | { |
0ee19663 | 2616 | struct line_sequence *seq = NULL; |
089e3718 | 2617 | struct line_info *info; |
0ee19663 | 2618 | int low, high, mid; |
e82ce529 | 2619 | |
0ee19663 NC |
2620 | /* Binary search the array of sequences. */ |
2621 | low = 0; | |
2622 | high = table->num_sequences; | |
2623 | while (low < high) | |
2624 | { | |
2625 | mid = (low + high) / 2; | |
2626 | seq = &table->sequences[mid]; | |
2627 | if (addr < seq->low_pc) | |
2628 | high = mid; | |
2629 | else if (addr >= seq->last_line->address) | |
2630 | low = mid + 1; | |
2631 | else | |
2632 | break; | |
2633 | } | |
98591c73 | 2634 | |
089e3718 IT |
2635 | /* Check for a valid sequence. */ |
2636 | if (!seq || addr < seq->low_pc || addr >= seq->last_line->address) | |
2637 | goto fail; | |
2638 | ||
2639 | if (!build_line_info_table (table, seq)) | |
2640 | goto fail; | |
2641 | ||
2642 | /* Binary search the array of line information. */ | |
2643 | low = 0; | |
2644 | high = seq->num_lines; | |
2645 | info = NULL; | |
2646 | while (low < high) | |
1ee24f27 | 2647 | { |
089e3718 IT |
2648 | mid = (low + high) / 2; |
2649 | info = seq->line_info_lookup[mid]; | |
2650 | if (addr < info->address) | |
2651 | high = mid; | |
2652 | else if (addr >= seq->line_info_lookup[mid + 1]->address) | |
2653 | low = mid + 1; | |
2654 | else | |
2655 | break; | |
2656 | } | |
0ee19663 | 2657 | |
089e3718 IT |
2658 | /* Check for a valid line information entry. */ |
2659 | if (info | |
2660 | && addr >= info->address | |
2661 | && addr < seq->line_info_lookup[mid + 1]->address | |
2662 | && !(info->end_sequence || info == seq->last_line)) | |
2663 | { | |
2664 | *filename_ptr = info->filename; | |
2665 | *linenumber_ptr = info->line; | |
2666 | if (discriminator_ptr) | |
2667 | *discriminator_ptr = info->discriminator; | |
2668 | return seq->last_line->address - seq->low_pc; | |
1ee24f27 DJ |
2669 | } |
2670 | ||
dc1e8a47 | 2671 | fail: |
107601c8 | 2672 | *filename_ptr = NULL; |
240d6706 | 2673 | return 0; |
252b5132 | 2674 | } |
98591c73 | 2675 | |
0ee19663 | 2676 | /* Read in the .debug_ranges section for future reference. */ |
a13afe8e FF |
2677 | |
2678 | static bfd_boolean | |
089e3718 | 2679 | read_debug_ranges (struct comp_unit * unit) |
a13afe8e | 2680 | { |
99b06c60 AM |
2681 | struct dwarf2_debug *stash = unit->stash; |
2682 | struct dwarf2_debug_file *file = unit->file; | |
089e3718 | 2683 | |
fc28f9aa | 2684 | return read_section (unit->abfd, &stash->debug_sections[debug_ranges], |
99b06c60 AM |
2685 | file->syms, 0, |
2686 | &file->dwarf_ranges_buffer, &file->dwarf_ranges_size); | |
a13afe8e FF |
2687 | } |
2688 | ||
c3757b58 MW |
2689 | /* Read in the .debug_rnglists section for future reference. */ |
2690 | ||
2691 | static bfd_boolean | |
2692 | read_debug_rnglists (struct comp_unit * unit) | |
2693 | { | |
2694 | struct dwarf2_debug *stash = unit->stash; | |
2695 | struct dwarf2_debug_file *file = unit->file; | |
2696 | ||
2697 | return read_section (unit->abfd, &stash->debug_sections[debug_rnglists], | |
2698 | file->syms, 0, | |
2699 | &file->dwarf_rnglists_buffer, &file->dwarf_rnglists_size); | |
2700 | } | |
2701 | ||
a092b084 | 2702 | /* Function table functions. */ |
252b5132 | 2703 | |
089e3718 IT |
2704 | static int |
2705 | compare_lookup_funcinfos (const void * a, const void * b) | |
2706 | { | |
2707 | const struct lookup_funcinfo * lookup1 = a; | |
2708 | const struct lookup_funcinfo * lookup2 = b; | |
2709 | ||
2710 | if (lookup1->low_addr < lookup2->low_addr) | |
2711 | return -1; | |
2712 | if (lookup1->low_addr > lookup2->low_addr) | |
2713 | return 1; | |
2714 | if (lookup1->high_addr < lookup2->high_addr) | |
2715 | return -1; | |
2716 | if (lookup1->high_addr > lookup2->high_addr) | |
2717 | return 1; | |
2718 | ||
8025b055 AM |
2719 | if (lookup1->idx < lookup2->idx) |
2720 | return -1; | |
2721 | if (lookup1->idx > lookup2->idx) | |
2722 | return 1; | |
089e3718 IT |
2723 | return 0; |
2724 | } | |
2725 | ||
2726 | static bfd_boolean | |
2727 | build_lookup_funcinfo_table (struct comp_unit * unit) | |
2728 | { | |
2729 | struct lookup_funcinfo *lookup_funcinfo_table = unit->lookup_funcinfo_table; | |
2730 | unsigned int number_of_functions = unit->number_of_functions; | |
2731 | struct funcinfo *each; | |
2732 | struct lookup_funcinfo *entry; | |
b6ddcd85 | 2733 | size_t func_index; |
089e3718 IT |
2734 | struct arange *range; |
2735 | bfd_vma low_addr, high_addr; | |
2736 | ||
2737 | if (lookup_funcinfo_table || number_of_functions == 0) | |
2738 | return TRUE; | |
2739 | ||
2740 | /* Create the function info lookup table. */ | |
2741 | lookup_funcinfo_table = (struct lookup_funcinfo *) | |
2742 | bfd_malloc (number_of_functions * sizeof (struct lookup_funcinfo)); | |
2743 | if (lookup_funcinfo_table == NULL) | |
2744 | return FALSE; | |
2745 | ||
2746 | /* Populate the function info lookup table. */ | |
b6ddcd85 | 2747 | func_index = number_of_functions; |
089e3718 IT |
2748 | for (each = unit->function_table; each; each = each->prev_func) |
2749 | { | |
b6ddcd85 | 2750 | entry = &lookup_funcinfo_table[--func_index]; |
089e3718 | 2751 | entry->funcinfo = each; |
8025b055 | 2752 | entry->idx = func_index; |
089e3718 IT |
2753 | |
2754 | /* Calculate the lowest and highest address for this function entry. */ | |
2755 | low_addr = entry->funcinfo->arange.low; | |
2756 | high_addr = entry->funcinfo->arange.high; | |
2757 | ||
2758 | for (range = entry->funcinfo->arange.next; range; range = range->next) | |
2759 | { | |
2760 | if (range->low < low_addr) | |
2761 | low_addr = range->low; | |
2762 | if (range->high > high_addr) | |
2763 | high_addr = range->high; | |
2764 | } | |
2765 | ||
2766 | entry->low_addr = low_addr; | |
2767 | entry->high_addr = high_addr; | |
2768 | } | |
2769 | ||
b6ddcd85 | 2770 | BFD_ASSERT (func_index == 0); |
089e3718 IT |
2771 | |
2772 | /* Sort the function by address. */ | |
2773 | qsort (lookup_funcinfo_table, | |
2774 | number_of_functions, | |
2775 | sizeof (struct lookup_funcinfo), | |
2776 | compare_lookup_funcinfos); | |
2777 | ||
2778 | /* Calculate the high watermark for each function in the lookup table. */ | |
2779 | high_addr = lookup_funcinfo_table[0].high_addr; | |
b6ddcd85 | 2780 | for (func_index = 1; func_index < number_of_functions; func_index++) |
089e3718 | 2781 | { |
b6ddcd85 | 2782 | entry = &lookup_funcinfo_table[func_index]; |
089e3718 IT |
2783 | if (entry->high_addr > high_addr) |
2784 | high_addr = entry->high_addr; | |
2785 | else | |
2786 | entry->high_addr = high_addr; | |
2787 | } | |
2788 | ||
2789 | unit->lookup_funcinfo_table = lookup_funcinfo_table; | |
2790 | return TRUE; | |
2791 | } | |
2792 | ||
e00e8198 | 2793 | /* If ADDR is within UNIT's function tables, set FUNCTION_PTR, and return |
240d6706 NC |
2794 | TRUE. Note that we need to find the function that has the smallest range |
2795 | that contains ADDR, to handle inlined functions without depending upon | |
2796 | them being ordered in TABLE by increasing range. */ | |
252b5132 | 2797 | |
b34976b6 | 2798 | static bfd_boolean |
4ab527b0 | 2799 | lookup_address_in_function_table (struct comp_unit *unit, |
818a27ac | 2800 | bfd_vma addr, |
e00e8198 | 2801 | struct funcinfo **function_ptr) |
252b5132 | 2802 | { |
089e3718 IT |
2803 | unsigned int number_of_functions = unit->number_of_functions; |
2804 | struct lookup_funcinfo* lookup_funcinfo = NULL; | |
2805 | struct funcinfo* funcinfo = NULL; | |
a13afe8e | 2806 | struct funcinfo* best_fit = NULL; |
4ba3b326 | 2807 | bfd_vma best_fit_len = 0; |
089e3718 | 2808 | bfd_size_type low, high, mid, first; |
a13afe8e | 2809 | struct arange *arange; |
252b5132 | 2810 | |
cd6581da NC |
2811 | if (number_of_functions == 0) |
2812 | return FALSE; | |
2813 | ||
089e3718 IT |
2814 | if (!build_lookup_funcinfo_table (unit)) |
2815 | return FALSE; | |
2816 | ||
cd6581da NC |
2817 | if (unit->lookup_funcinfo_table[number_of_functions - 1].high_addr < addr) |
2818 | return FALSE; | |
07d6d2b8 | 2819 | |
089e3718 IT |
2820 | /* Find the first function in the lookup table which may contain the |
2821 | specified address. */ | |
2822 | low = 0; | |
2823 | high = number_of_functions; | |
2824 | first = high; | |
2825 | while (low < high) | |
252b5132 | 2826 | { |
089e3718 IT |
2827 | mid = (low + high) / 2; |
2828 | lookup_funcinfo = &unit->lookup_funcinfo_table[mid]; | |
2829 | if (addr < lookup_funcinfo->low_addr) | |
2830 | high = mid; | |
2831 | else if (addr >= lookup_funcinfo->high_addr) | |
2832 | low = mid + 1; | |
2833 | else | |
2834 | high = first = mid; | |
2835 | } | |
2836 | ||
2837 | /* Find the 'best' match for the address. The prior algorithm defined the | |
2838 | best match as the function with the smallest address range containing | |
2839 | the specified address. This definition should probably be changed to the | |
2840 | innermost inline routine containing the address, but right now we want | |
2841 | to get the same results we did before. */ | |
2842 | while (first < number_of_functions) | |
2843 | { | |
2844 | if (addr < unit->lookup_funcinfo_table[first].low_addr) | |
2845 | break; | |
2846 | funcinfo = unit->lookup_funcinfo_table[first].funcinfo; | |
2847 | ||
2848 | for (arange = &funcinfo->arange; arange; arange = arange->next) | |
252b5132 | 2849 | { |
089e3718 IT |
2850 | if (addr < arange->low || addr >= arange->high) |
2851 | continue; | |
2852 | ||
2853 | if (!best_fit | |
2854 | || arange->high - arange->low < best_fit_len | |
2855 | /* The following comparison is designed to return the same | |
2856 | match as the previous algorithm for routines which have the | |
2857 | same best fit length. */ | |
2858 | || (arange->high - arange->low == best_fit_len | |
2859 | && funcinfo > best_fit)) | |
a13afe8e | 2860 | { |
089e3718 IT |
2861 | best_fit = funcinfo; |
2862 | best_fit_len = arange->high - arange->low; | |
a13afe8e | 2863 | } |
252b5132 | 2864 | } |
98591c73 | 2865 | |
089e3718 | 2866 | first++; |
a13afe8e | 2867 | } |
089e3718 IT |
2868 | |
2869 | if (!best_fit) | |
2870 | return FALSE; | |
2871 | ||
2872 | *function_ptr = best_fit; | |
2873 | return TRUE; | |
252b5132 RH |
2874 | } |
2875 | ||
5420f73d L |
2876 | /* If SYM at ADDR is within function table of UNIT, set FILENAME_PTR |
2877 | and LINENUMBER_PTR, and return TRUE. */ | |
2878 | ||
2879 | static bfd_boolean | |
2880 | lookup_symbol_in_function_table (struct comp_unit *unit, | |
2881 | asymbol *sym, | |
2882 | bfd_vma addr, | |
2883 | const char **filename_ptr, | |
2884 | unsigned int *linenumber_ptr) | |
2885 | { | |
2886 | struct funcinfo* each_func; | |
2887 | struct funcinfo* best_fit = NULL; | |
4ba3b326 | 2888 | bfd_vma best_fit_len = 0; |
5420f73d L |
2889 | struct arange *arange; |
2890 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 2891 | asection *sec = bfd_asymbol_section (sym); |
5420f73d L |
2892 | |
2893 | for (each_func = unit->function_table; | |
2894 | each_func; | |
2895 | each_func = each_func->prev_func) | |
2896 | { | |
2897 | for (arange = &each_func->arange; | |
2898 | arange; | |
2899 | arange = arange->next) | |
2900 | { | |
2901 | if ((!each_func->sec || each_func->sec == sec) | |
2902 | && addr >= arange->low | |
2903 | && addr < arange->high | |
650f284e | 2904 | && each_func->name |
5420f73d L |
2905 | && strcmp (name, each_func->name) == 0 |
2906 | && (!best_fit | |
4ba3b326 TG |
2907 | || arange->high - arange->low < best_fit_len)) |
2908 | { | |
2909 | best_fit = each_func; | |
2910 | best_fit_len = arange->high - arange->low; | |
2911 | } | |
5420f73d L |
2912 | } |
2913 | } | |
2914 | ||
2915 | if (best_fit) | |
2916 | { | |
2917 | best_fit->sec = sec; | |
2918 | *filename_ptr = best_fit->file; | |
2919 | *linenumber_ptr = best_fit->line; | |
2920 | return TRUE; | |
2921 | } | |
2922 | else | |
2923 | return FALSE; | |
2924 | } | |
2925 | ||
2926 | /* Variable table functions. */ | |
2927 | ||
2928 | /* If SYM is within variable table of UNIT, set FILENAME_PTR and | |
2929 | LINENUMBER_PTR, and return TRUE. */ | |
2930 | ||
2931 | static bfd_boolean | |
2932 | lookup_symbol_in_variable_table (struct comp_unit *unit, | |
2933 | asymbol *sym, | |
5cf2e3f0 | 2934 | bfd_vma addr, |
5420f73d L |
2935 | const char **filename_ptr, |
2936 | unsigned int *linenumber_ptr) | |
2937 | { | |
2938 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 2939 | asection *sec = bfd_asymbol_section (sym); |
5420f73d L |
2940 | struct varinfo* each; |
2941 | ||
2942 | for (each = unit->variable_table; each; each = each->prev_var) | |
f3a08f77 | 2943 | if (! each->stack |
5cf2e3f0 L |
2944 | && each->file != NULL |
2945 | && each->name != NULL | |
2946 | && each->addr == addr | |
5420f73d L |
2947 | && (!each->sec || each->sec == sec) |
2948 | && strcmp (name, each->name) == 0) | |
2949 | break; | |
2950 | ||
2951 | if (each) | |
2952 | { | |
2953 | each->sec = sec; | |
2954 | *filename_ptr = each->file; | |
2955 | *linenumber_ptr = each->line; | |
2956 | return TRUE; | |
2957 | } | |
089e3718 IT |
2958 | |
2959 | return FALSE; | |
5420f73d L |
2960 | } |
2961 | ||
99b06c60 AM |
2962 | static struct comp_unit *stash_comp_unit (struct dwarf2_debug *, |
2963 | struct dwarf2_debug_file *); | |
2964 | static bfd_boolean comp_unit_maybe_decode_line_info (struct comp_unit *); | |
c327a44f | 2965 | |
52a93b95 | 2966 | static bfd_boolean |
063c511b AM |
2967 | find_abstract_instance (struct comp_unit *unit, |
2968 | struct attribute *attr_ptr, | |
2969 | unsigned int recur_count, | |
2970 | const char **pname, | |
2971 | bfd_boolean *is_linkage, | |
2972 | char **filename_ptr, | |
2973 | int *linenumber_ptr) | |
06f22d7e FF |
2974 | { |
2975 | bfd *abfd = unit->abfd; | |
e63ef095 | 2976 | bfd_byte *info_ptr = NULL; |
dbb3fbbb | 2977 | bfd_byte *info_ptr_end; |
06f22d7e FF |
2978 | unsigned int abbrev_number, bytes_read, i; |
2979 | struct abbrev_info *abbrev; | |
5609a71e | 2980 | bfd_uint64_t die_ref = attr_ptr->u.val; |
06f22d7e | 2981 | struct attribute attr; |
52a93b95 | 2982 | const char *name = NULL; |
06f22d7e | 2983 | |
063c511b AM |
2984 | if (recur_count == 100) |
2985 | { | |
2986 | _bfd_error_handler | |
2987 | (_("DWARF error: abstract instance recursion detected")); | |
2988 | bfd_set_error (bfd_error_bad_value); | |
2989 | return FALSE; | |
2990 | } | |
2991 | ||
5609a71e DJ |
2992 | /* DW_FORM_ref_addr can reference an entry in a different CU. It |
2993 | is an offset from the .debug_info section, not the current CU. */ | |
2994 | if (attr_ptr->form == DW_FORM_ref_addr) | |
2995 | { | |
2996 | /* We only support DW_FORM_ref_addr within the same file, so | |
1b86808a AM |
2997 | any relocations should be resolved already. Check this by |
2998 | testing for a zero die_ref; There can't be a valid reference | |
2999 | to the header of a .debug_info section. | |
3000 | DW_FORM_ref_addr is an offset relative to .debug_info. | |
3001 | Normally when using the GNU linker this is accomplished by | |
3002 | emitting a symbolic reference to a label, because .debug_info | |
3003 | sections are linked at zero. When there are multiple section | |
3004 | groups containing .debug_info, as there might be in a | |
3005 | relocatable object file, it would be reasonable to assume that | |
3006 | a symbolic reference to a label in any .debug_info section | |
3007 | might be used. Since we lay out multiple .debug_info | |
3008 | sections at non-zero VMAs (see place_sections), and read | |
99b06c60 AM |
3009 | them contiguously into dwarf_info_buffer, that means the |
3010 | reference is relative to dwarf_info_buffer. */ | |
1b86808a AM |
3011 | size_t total; |
3012 | ||
99b06c60 AM |
3013 | info_ptr = unit->file->dwarf_info_buffer; |
3014 | info_ptr_end = info_ptr + unit->file->dwarf_info_size; | |
1b86808a | 3015 | total = info_ptr_end - info_ptr; |
a4cd947a AM |
3016 | if (!die_ref) |
3017 | return TRUE; | |
3018 | else if (die_ref >= total) | |
52a93b95 AM |
3019 | { |
3020 | _bfd_error_handler | |
9793eb77 | 3021 | (_("DWARF error: invalid abstract instance DIE ref")); |
52a93b95 AM |
3022 | bfd_set_error (bfd_error_bad_value); |
3023 | return FALSE; | |
3024 | } | |
1b86808a | 3025 | info_ptr += die_ref; |
e63ef095 AM |
3026 | } |
3027 | else if (attr_ptr->form == DW_FORM_GNU_ref_alt) | |
3028 | { | |
3029 | bfd_boolean first_time = unit->stash->alt.dwarf_info_buffer == NULL; | |
3030 | ||
3031 | info_ptr = read_alt_indirect_ref (unit, die_ref); | |
3032 | if (first_time) | |
3033 | unit->stash->alt.info_ptr = unit->stash->alt.dwarf_info_buffer; | |
3034 | if (info_ptr == NULL) | |
3035 | { | |
3036 | _bfd_error_handler | |
3037 | (_("DWARF error: unable to read alt ref %" PRIu64), | |
3038 | (uint64_t) die_ref); | |
3039 | bfd_set_error (bfd_error_bad_value); | |
3040 | return FALSE; | |
3041 | } | |
3042 | info_ptr_end = (unit->stash->alt.dwarf_info_buffer | |
3043 | + unit->stash->alt.dwarf_info_size); | |
3044 | if (unit->stash->alt.all_comp_units) | |
3045 | unit = unit->stash->alt.all_comp_units; | |
3046 | } | |
0a9c7b2b | 3047 | |
e63ef095 AM |
3048 | if (attr_ptr->form == DW_FORM_ref_addr |
3049 | || attr_ptr->form == DW_FORM_GNU_ref_alt) | |
3050 | { | |
0a9c7b2b NC |
3051 | /* Now find the CU containing this pointer. */ |
3052 | if (info_ptr >= unit->info_ptr_unit && info_ptr < unit->end_ptr) | |
1b86808a | 3053 | info_ptr_end = unit->end_ptr; |
0a9c7b2b NC |
3054 | else |
3055 | { | |
3056 | /* Check other CUs to see if they contain the abbrev. */ | |
e63ef095 | 3057 | struct comp_unit *u; |
0a9c7b2b NC |
3058 | |
3059 | for (u = unit->prev_unit; u != NULL; u = u->prev_unit) | |
3060 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
3061 | break; | |
3062 | ||
3063 | if (u == NULL) | |
3064 | for (u = unit->next_unit; u != NULL; u = u->next_unit) | |
3065 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
3066 | break; | |
3067 | ||
e63ef095 AM |
3068 | if (attr_ptr->form == DW_FORM_ref_addr) |
3069 | while (u == NULL) | |
3070 | { | |
3071 | u = stash_comp_unit (unit->stash, &unit->stash->f); | |
3072 | if (u == NULL) | |
3073 | break; | |
3074 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
3075 | break; | |
3076 | u = NULL; | |
3077 | } | |
3078 | ||
3079 | if (attr_ptr->form == DW_FORM_GNU_ref_alt) | |
3080 | while (u == NULL) | |
3081 | { | |
3082 | u = stash_comp_unit (unit->stash, &unit->stash->alt); | |
3083 | if (u == NULL) | |
3084 | break; | |
3085 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
3086 | break; | |
3087 | u = NULL; | |
3088 | } | |
dfc19da6 AM |
3089 | |
3090 | if (u == NULL) | |
3091 | { | |
3092 | _bfd_error_handler | |
3093 | (_("DWARF error: unable to locate abstract instance DIE ref %" | |
3094 | PRIu64), (uint64_t) die_ref); | |
3095 | bfd_set_error (bfd_error_bad_value); | |
3096 | return FALSE; | |
3097 | } | |
3098 | unit = u; | |
3099 | info_ptr_end = unit->end_ptr; | |
0a9c7b2b | 3100 | } |
5609a71e | 3101 | } |
68ffbac6 | 3102 | else |
dbb3fbbb | 3103 | { |
1b86808a AM |
3104 | /* DW_FORM_ref1, DW_FORM_ref2, DW_FORM_ref4, DW_FORM_ref8 or |
3105 | DW_FORM_ref_udata. These are all references relative to the | |
3106 | start of the current CU. */ | |
3107 | size_t total; | |
3108 | ||
3109 | info_ptr = unit->info_ptr_unit; | |
dbb3fbbb | 3110 | info_ptr_end = unit->end_ptr; |
1b86808a AM |
3111 | total = info_ptr_end - info_ptr; |
3112 | if (!die_ref || die_ref >= total) | |
3113 | { | |
3114 | _bfd_error_handler | |
9793eb77 | 3115 | (_("DWARF error: invalid abstract instance DIE ref")); |
1b86808a AM |
3116 | bfd_set_error (bfd_error_bad_value); |
3117 | return FALSE; | |
3118 | } | |
3119 | info_ptr += die_ref; | |
dbb3fbbb | 3120 | } |
95e34fb4 | 3121 | |
4265548c PA |
3122 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
3123 | FALSE, info_ptr_end); | |
06f22d7e FF |
3124 | info_ptr += bytes_read; |
3125 | ||
3126 | if (abbrev_number) | |
3127 | { | |
3128 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); | |
3129 | if (! abbrev) | |
3130 | { | |
4eca0228 | 3131 | _bfd_error_handler |
9793eb77 | 3132 | (_("DWARF error: could not find abbrev number %u"), abbrev_number); |
06f22d7e | 3133 | bfd_set_error (bfd_error_bad_value); |
52a93b95 | 3134 | return FALSE; |
06f22d7e FF |
3135 | } |
3136 | else | |
3137 | { | |
d5cbaa15 | 3138 | for (i = 0; i < abbrev->num_attrs; ++i) |
06f22d7e | 3139 | { |
8af6b354 | 3140 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, |
dbb3fbbb | 3141 | info_ptr, info_ptr_end); |
8af6b354 AM |
3142 | if (info_ptr == NULL) |
3143 | break; | |
26bf4e33 FF |
3144 | switch (attr.name) |
3145 | { | |
3146 | case DW_AT_name: | |
643be349 JJ |
3147 | /* Prefer DW_AT_MIPS_linkage_name or DW_AT_linkage_name |
3148 | over DW_AT_name. */ | |
60d77146 | 3149 | if (name == NULL && is_str_attr (attr.form)) |
e00e8198 AM |
3150 | { |
3151 | name = attr.u.str; | |
3152 | if (non_mangled (unit->lang)) | |
3153 | *is_linkage = TRUE; | |
3154 | } | |
26bf4e33 FF |
3155 | break; |
3156 | case DW_AT_specification: | |
063c511b | 3157 | if (!find_abstract_instance (unit, &attr, recur_count + 1, |
c8d3f932 | 3158 | &name, is_linkage, |
422f3d3d | 3159 | filename_ptr, linenumber_ptr)) |
52a93b95 | 3160 | return FALSE; |
26bf4e33 | 3161 | break; |
643be349 | 3162 | case DW_AT_linkage_name: |
d5cbaa15 | 3163 | case DW_AT_MIPS_linkage_name: |
60d77146 NC |
3164 | /* PR 16949: Corrupt debug info can place |
3165 | non-string forms into these attributes. */ | |
6d74e8a1 | 3166 | if (is_str_attr (attr.form)) |
e00e8198 AM |
3167 | { |
3168 | name = attr.u.str; | |
3169 | *is_linkage = TRUE; | |
3170 | } | |
d5cbaa15 | 3171 | break; |
422f3d3d | 3172 | case DW_AT_decl_file: |
99b06c60 | 3173 | if (!comp_unit_maybe_decode_line_info (unit)) |
dfc19da6 | 3174 | return FALSE; |
422f3d3d PC |
3175 | *filename_ptr = concat_filename (unit->line_table, |
3176 | attr.u.val); | |
3177 | break; | |
3178 | case DW_AT_decl_line: | |
3179 | *linenumber_ptr = attr.u.val; | |
3180 | break; | |
26bf4e33 FF |
3181 | default: |
3182 | break; | |
3183 | } | |
06f22d7e FF |
3184 | } |
3185 | } | |
3186 | } | |
52a93b95 AM |
3187 | *pname = name; |
3188 | return TRUE; | |
06f22d7e FF |
3189 | } |
3190 | ||
8af6b354 | 3191 | static bfd_boolean |
c3757b58 MW |
3192 | read_ranges (struct comp_unit *unit, struct arange *arange, |
3193 | bfd_uint64_t offset) | |
a13afe8e FF |
3194 | { |
3195 | bfd_byte *ranges_ptr; | |
dbb3fbbb | 3196 | bfd_byte *ranges_end; |
a13afe8e FF |
3197 | bfd_vma base_address = unit->base_address; |
3198 | ||
99b06c60 | 3199 | if (! unit->file->dwarf_ranges_buffer) |
a13afe8e FF |
3200 | { |
3201 | if (! read_debug_ranges (unit)) | |
8af6b354 | 3202 | return FALSE; |
a13afe8e | 3203 | } |
d8d1c398 | 3204 | |
99b06c60 AM |
3205 | ranges_ptr = unit->file->dwarf_ranges_buffer + offset; |
3206 | if (ranges_ptr < unit->file->dwarf_ranges_buffer) | |
dbb3fbbb | 3207 | return FALSE; |
99b06c60 | 3208 | ranges_end = unit->file->dwarf_ranges_buffer + unit->file->dwarf_ranges_size; |
62f8d217 | 3209 | |
a13afe8e FF |
3210 | for (;;) |
3211 | { | |
3212 | bfd_vma low_pc; | |
3213 | bfd_vma high_pc; | |
3214 | ||
dbb3fbbb | 3215 | /* PR 17512: file: 62cada7d. */ |
62f8d217 | 3216 | if (ranges_ptr + 2 * unit->addr_size > ranges_end) |
dbb3fbbb NC |
3217 | return FALSE; |
3218 | ||
3219 | low_pc = read_address (unit, ranges_ptr, ranges_end); | |
13d72a14 | 3220 | ranges_ptr += unit->addr_size; |
dbb3fbbb | 3221 | high_pc = read_address (unit, ranges_ptr, ranges_end); |
13d72a14 AN |
3222 | ranges_ptr += unit->addr_size; |
3223 | ||
a13afe8e FF |
3224 | if (low_pc == 0 && high_pc == 0) |
3225 | break; | |
3226 | if (low_pc == -1UL && high_pc != -1UL) | |
3227 | base_address = high_pc; | |
3228 | else | |
8af6b354 | 3229 | { |
a2a50954 | 3230 | if (!arange_add (unit, arange, |
8af6b354 AM |
3231 | base_address + low_pc, base_address + high_pc)) |
3232 | return FALSE; | |
3233 | } | |
a13afe8e | 3234 | } |
8af6b354 | 3235 | return TRUE; |
a13afe8e FF |
3236 | } |
3237 | ||
c3757b58 MW |
3238 | static bfd_boolean |
3239 | read_rnglists (struct comp_unit *unit, struct arange *arange, | |
3240 | bfd_uint64_t offset) | |
3241 | { | |
3242 | bfd_byte *rngs_ptr; | |
3243 | bfd_byte *rngs_end; | |
3244 | bfd_vma base_address = unit->base_address; | |
3245 | bfd_vma low_pc; | |
3246 | bfd_vma high_pc; | |
3247 | bfd *abfd = unit->abfd; | |
3248 | ||
3249 | if (! unit->file->dwarf_rnglists_buffer) | |
3250 | { | |
3251 | if (! read_debug_rnglists (unit)) | |
3252 | return FALSE; | |
3253 | } | |
3254 | ||
3255 | rngs_ptr = unit->file->dwarf_rnglists_buffer + offset; | |
3256 | if (rngs_ptr < unit->file->dwarf_rnglists_buffer) | |
3257 | return FALSE; | |
3258 | rngs_end = unit->file->dwarf_rnglists_buffer; | |
3259 | rngs_end += unit->file->dwarf_rnglists_size; | |
3260 | ||
3261 | for (;;) | |
3262 | { | |
3263 | enum dwarf_range_list_entry rlet; | |
3264 | unsigned int bytes_read; | |
3265 | ||
3266 | if (rngs_ptr + 1 > rngs_end) | |
3267 | return FALSE; | |
3268 | ||
3269 | rlet = read_1_byte (abfd, rngs_ptr, rngs_end); | |
3270 | rngs_ptr++; | |
3271 | ||
3272 | switch (rlet) | |
3273 | { | |
3274 | case DW_RLE_end_of_list: | |
3275 | return TRUE; | |
3276 | ||
3277 | case DW_RLE_base_address: | |
3278 | if (rngs_ptr + unit->addr_size > rngs_end) | |
3279 | return FALSE; | |
3280 | base_address = read_address (unit, rngs_ptr, rngs_end); | |
3281 | rngs_ptr += unit->addr_size; | |
3282 | continue; | |
3283 | ||
3284 | case DW_RLE_start_length: | |
3285 | if (rngs_ptr + unit->addr_size > rngs_end) | |
3286 | return FALSE; | |
3287 | low_pc = read_address (unit, rngs_ptr, rngs_end); | |
3288 | rngs_ptr += unit->addr_size; | |
3289 | high_pc = low_pc; | |
3290 | high_pc += _bfd_safe_read_leb128 (abfd, rngs_ptr, &bytes_read, | |
3291 | FALSE, rngs_end); | |
3292 | rngs_ptr += bytes_read; | |
3293 | break; | |
3294 | ||
3295 | case DW_RLE_offset_pair: | |
3296 | low_pc = base_address; | |
3297 | low_pc += _bfd_safe_read_leb128 (abfd, rngs_ptr, &bytes_read, | |
3298 | FALSE, rngs_end); | |
18454c15 | 3299 | rngs_ptr += bytes_read; |
c3757b58 MW |
3300 | high_pc = base_address; |
3301 | high_pc += _bfd_safe_read_leb128 (abfd, rngs_ptr, &bytes_read, | |
3302 | FALSE, rngs_end); | |
18454c15 | 3303 | rngs_ptr += bytes_read; |
c3757b58 MW |
3304 | break; |
3305 | ||
3306 | case DW_RLE_start_end: | |
3307 | if (rngs_ptr + 2 * unit->addr_size > rngs_end) | |
3308 | return FALSE; | |
3309 | low_pc = read_address (unit, rngs_ptr, rngs_end); | |
3310 | rngs_ptr += unit->addr_size; | |
3311 | high_pc = read_address (unit, rngs_ptr, rngs_end); | |
3312 | rngs_ptr += unit->addr_size; | |
3313 | break; | |
3314 | ||
3315 | /* TODO x-variants need .debug_addr support used for split-dwarf. */ | |
3316 | case DW_RLE_base_addressx: | |
3317 | case DW_RLE_startx_endx: | |
3318 | case DW_RLE_startx_length: | |
3319 | default: | |
3320 | return FALSE; | |
3321 | } | |
3322 | ||
c3757b58 MW |
3323 | if (!arange_add (unit, arange, low_pc, high_pc)) |
3324 | return FALSE; | |
3325 | } | |
3326 | } | |
3327 | ||
3328 | static bfd_boolean | |
3329 | read_rangelist (struct comp_unit *unit, struct arange *arange, | |
3330 | bfd_uint64_t offset) | |
3331 | { | |
3332 | if (unit->version <= 4) | |
3333 | return read_ranges (unit, arange, offset); | |
3334 | else | |
3335 | return read_rnglists (unit, arange, offset); | |
3336 | } | |
3337 | ||
ca8f6bc6 NC |
3338 | static struct funcinfo * |
3339 | lookup_func_by_offset (bfd_uint64_t offset, struct funcinfo * table) | |
3340 | { | |
3341 | for (; table != NULL; table = table->prev_func) | |
3342 | if (table->unit_offset == offset) | |
3343 | return table; | |
3344 | return NULL; | |
3345 | } | |
3346 | ||
f3a08f77 NC |
3347 | static struct varinfo * |
3348 | lookup_var_by_offset (bfd_uint64_t offset, struct varinfo * table) | |
3349 | { | |
3350 | while (table) | |
3351 | { | |
3352 | if (table->unit_offset == offset) | |
3353 | return table; | |
3354 | table = table->prev_var; | |
3355 | } | |
3356 | ||
3357 | return NULL; | |
3358 | } | |
3359 | ||
3360 | ||
a092b084 | 3361 | /* DWARF2 Compilation unit functions. */ |
252b5132 RH |
3362 | |
3363 | /* Scan over each die in a comp. unit looking for functions to add | |
34b5e0b2 | 3364 | to the function table and variables to the variable table. */ |
252b5132 | 3365 | |
b34976b6 | 3366 | static bfd_boolean |
5420f73d | 3367 | scan_unit_for_symbols (struct comp_unit *unit) |
252b5132 RH |
3368 | { |
3369 | bfd *abfd = unit->abfd; | |
f075ee0c | 3370 | bfd_byte *info_ptr = unit->first_child_die_ptr; |
05192282 | 3371 | bfd_byte *info_ptr_end = unit->end_ptr; |
52a93b95 | 3372 | int nesting_level = 0; |
ca8f6bc6 NC |
3373 | struct nest_funcinfo |
3374 | { | |
52a93b95 AM |
3375 | struct funcinfo *func; |
3376 | } *nested_funcs; | |
c955f9cd JW |
3377 | int nested_funcs_size; |
3378 | ||
3379 | /* Maintain a stack of in-scope functions and inlined functions, which we | |
3380 | can use to set the caller_func field. */ | |
3381 | nested_funcs_size = 32; | |
52a93b95 AM |
3382 | nested_funcs = (struct nest_funcinfo *) |
3383 | bfd_malloc (nested_funcs_size * sizeof (*nested_funcs)); | |
c955f9cd JW |
3384 | if (nested_funcs == NULL) |
3385 | return FALSE; | |
52a93b95 | 3386 | nested_funcs[nesting_level].func = 0; |
252b5132 | 3387 | |
ca8f6bc6 NC |
3388 | /* PR 27484: We must scan the DIEs twice. The first time we look for |
3389 | function and variable tags and accumulate them into their respective | |
3390 | tables. The second time through we process the attributes of the | |
3391 | functions/variables and augment the table entries. */ | |
52a93b95 | 3392 | while (nesting_level >= 0) |
252b5132 RH |
3393 | { |
3394 | unsigned int abbrev_number, bytes_read, i; | |
3395 | struct abbrev_info *abbrev; | |
252b5132 | 3396 | struct funcinfo *func; |
5420f73d | 3397 | struct varinfo *var; |
f3a08f77 | 3398 | bfd_uint64_t current_offset; |
252b5132 | 3399 | |
877a8638 | 3400 | /* PR 17512: file: 9f405d9d. */ |
dbb3fbbb | 3401 | if (info_ptr >= info_ptr_end) |
877a8638 | 3402 | goto fail; |
62f8d217 | 3403 | |
f3a08f77 | 3404 | current_offset = info_ptr - unit->info_ptr_unit; |
4265548c PA |
3405 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
3406 | FALSE, info_ptr_end); | |
252b5132 RH |
3407 | info_ptr += bytes_read; |
3408 | ||
ca8f6bc6 | 3409 | if (abbrev_number == 0) |
252b5132 RH |
3410 | { |
3411 | nesting_level--; | |
3412 | continue; | |
3413 | } | |
98591c73 | 3414 | |
e643cb45 | 3415 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); |
252b5132 RH |
3416 | if (! abbrev) |
3417 | { | |
e643cb45 NC |
3418 | static unsigned int previous_failed_abbrev = -1U; |
3419 | ||
3420 | /* Avoid multiple reports of the same missing abbrev. */ | |
3421 | if (abbrev_number != previous_failed_abbrev) | |
3422 | { | |
3423 | _bfd_error_handler | |
9793eb77 | 3424 | (_("DWARF error: could not find abbrev number %u"), |
e643cb45 NC |
3425 | abbrev_number); |
3426 | previous_failed_abbrev = abbrev_number; | |
3427 | } | |
252b5132 | 3428 | bfd_set_error (bfd_error_bad_value); |
8af6b354 | 3429 | goto fail; |
252b5132 | 3430 | } |
98591c73 | 3431 | |
06f22d7e | 3432 | if (abbrev->tag == DW_TAG_subprogram |
5420f73d | 3433 | || abbrev->tag == DW_TAG_entry_point |
06f22d7e | 3434 | || abbrev->tag == DW_TAG_inlined_subroutine) |
252b5132 | 3435 | { |
986f0783 | 3436 | size_t amt = sizeof (struct funcinfo); |
f3a08f77 NC |
3437 | |
3438 | var = NULL; | |
a50b1753 | 3439 | func = (struct funcinfo *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
3440 | if (func == NULL) |
3441 | goto fail; | |
4ab527b0 | 3442 | func->tag = abbrev->tag; |
252b5132 | 3443 | func->prev_func = unit->function_table; |
ca8f6bc6 | 3444 | func->unit_offset = current_offset; |
252b5132 | 3445 | unit->function_table = func; |
e643cb45 | 3446 | unit->number_of_functions++; |
bd210d54 | 3447 | BFD_ASSERT (!unit->cached); |
c955f9cd JW |
3448 | |
3449 | if (func->tag == DW_TAG_inlined_subroutine) | |
52a93b95 AM |
3450 | for (i = nesting_level; i-- != 0; ) |
3451 | if (nested_funcs[i].func) | |
c955f9cd | 3452 | { |
52a93b95 | 3453 | func->caller_func = nested_funcs[i].func; |
c955f9cd JW |
3454 | break; |
3455 | } | |
52a93b95 | 3456 | nested_funcs[nesting_level].func = func; |
252b5132 RH |
3457 | } |
3458 | else | |
5420f73d L |
3459 | { |
3460 | func = NULL; | |
e6f04d55 NC |
3461 | if (abbrev->tag == DW_TAG_variable |
3462 | || abbrev->tag == DW_TAG_member) | |
5420f73d | 3463 | { |
986f0783 | 3464 | size_t amt = sizeof (struct varinfo); |
ca8f6bc6 | 3465 | |
a50b1753 | 3466 | var = (struct varinfo *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
3467 | if (var == NULL) |
3468 | goto fail; | |
5420f73d | 3469 | var->tag = abbrev->tag; |
f3a08f77 | 3470 | var->stack = TRUE; |
5420f73d L |
3471 | var->prev_var = unit->variable_table; |
3472 | unit->variable_table = var; | |
f3a08f77 | 3473 | var->unit_offset = current_offset; |
e643cb45 NC |
3474 | /* PR 18205: Missing debug information can cause this |
3475 | var to be attached to an already cached unit. */ | |
5420f73d | 3476 | } |
f3a08f77 NC |
3477 | else |
3478 | var = NULL; | |
c955f9cd JW |
3479 | |
3480 | /* No inline function in scope at this nesting level. */ | |
52a93b95 | 3481 | nested_funcs[nesting_level].func = 0; |
5420f73d | 3482 | } |
98591c73 | 3483 | |
ca8f6bc6 NC |
3484 | for (i = 0; i < abbrev->num_attrs; ++i) |
3485 | { | |
3486 | struct attribute attr; | |
3487 | ||
3488 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], | |
3489 | unit, info_ptr, info_ptr_end); | |
3490 | if (info_ptr == NULL) | |
3491 | goto fail; | |
3492 | } | |
3493 | ||
3494 | if (abbrev->has_children) | |
3495 | { | |
3496 | nesting_level++; | |
3497 | ||
3498 | if (nesting_level >= nested_funcs_size) | |
3499 | { | |
3500 | struct nest_funcinfo *tmp; | |
3501 | ||
3502 | nested_funcs_size *= 2; | |
3503 | tmp = (struct nest_funcinfo *) | |
3504 | bfd_realloc (nested_funcs, | |
3505 | nested_funcs_size * sizeof (*nested_funcs)); | |
3506 | if (tmp == NULL) | |
3507 | goto fail; | |
3508 | nested_funcs = tmp; | |
3509 | } | |
3510 | nested_funcs[nesting_level].func = 0; | |
3511 | } | |
3512 | } | |
3513 | ||
3514 | /* This is the second pass over the abbrevs. */ | |
3515 | info_ptr = unit->first_child_die_ptr; | |
3516 | nesting_level = 0; | |
3517 | ||
3518 | while (nesting_level >= 0) | |
3519 | { | |
3520 | unsigned int abbrev_number, bytes_read, i; | |
3521 | struct abbrev_info *abbrev; | |
3522 | struct attribute attr; | |
3523 | struct funcinfo *func; | |
3524 | struct varinfo *var; | |
3525 | bfd_vma low_pc = 0; | |
3526 | bfd_vma high_pc = 0; | |
3527 | bfd_boolean high_pc_relative = FALSE; | |
3528 | bfd_uint64_t current_offset; | |
3529 | ||
3530 | /* PR 17512: file: 9f405d9d. */ | |
3531 | if (info_ptr >= info_ptr_end) | |
3532 | goto fail; | |
3533 | ||
3534 | current_offset = info_ptr - unit->info_ptr_unit; | |
3535 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, | |
3536 | FALSE, info_ptr_end); | |
3537 | info_ptr += bytes_read; | |
3538 | ||
3539 | if (! abbrev_number) | |
3540 | { | |
3541 | nesting_level--; | |
3542 | continue; | |
3543 | } | |
3544 | ||
3545 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); | |
3546 | /* This should have been handled above. */ | |
3547 | BFD_ASSERT (abbrev != NULL); | |
3548 | ||
3549 | func = NULL; | |
3550 | var = NULL; | |
3551 | if (abbrev->tag == DW_TAG_subprogram | |
3552 | || abbrev->tag == DW_TAG_entry_point | |
3553 | || abbrev->tag == DW_TAG_inlined_subroutine) | |
3554 | { | |
3555 | func = lookup_func_by_offset (current_offset, unit->function_table); | |
3556 | if (func == NULL) | |
3557 | goto fail; | |
3558 | } | |
3559 | else if (abbrev->tag == DW_TAG_variable | |
3560 | || abbrev->tag == DW_TAG_member) | |
3561 | { | |
3562 | var = lookup_var_by_offset (current_offset, unit->variable_table); | |
3563 | if (var == NULL) | |
3564 | goto fail; | |
3565 | } | |
3566 | ||
252b5132 RH |
3567 | for (i = 0; i < abbrev->num_attrs; ++i) |
3568 | { | |
52a93b95 AM |
3569 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], |
3570 | unit, info_ptr, info_ptr_end); | |
8af6b354 | 3571 | if (info_ptr == NULL) |
8ecc1f20 | 3572 | goto fail; |
98591c73 | 3573 | |
252b5132 RH |
3574 | if (func) |
3575 | { | |
3576 | switch (attr.name) | |
3577 | { | |
4ab527b0 | 3578 | case DW_AT_call_file: |
8af6b354 AM |
3579 | func->caller_file = concat_filename (unit->line_table, |
3580 | attr.u.val); | |
4ab527b0 FF |
3581 | break; |
3582 | ||
3583 | case DW_AT_call_line: | |
3584 | func->caller_line = attr.u.val; | |
3585 | break; | |
3586 | ||
06f22d7e | 3587 | case DW_AT_abstract_origin: |
5d8e6b4d | 3588 | case DW_AT_specification: |
063c511b | 3589 | if (!find_abstract_instance (unit, &attr, 0, |
422f3d3d PC |
3590 | &func->name, |
3591 | &func->is_linkage, | |
3592 | &func->file, | |
3593 | &func->line)) | |
52a93b95 | 3594 | goto fail; |
06f22d7e FF |
3595 | break; |
3596 | ||
252b5132 | 3597 | case DW_AT_name: |
643be349 JJ |
3598 | /* Prefer DW_AT_MIPS_linkage_name or DW_AT_linkage_name |
3599 | over DW_AT_name. */ | |
60d77146 | 3600 | if (func->name == NULL && is_str_attr (attr.form)) |
e00e8198 AM |
3601 | { |
3602 | func->name = attr.u.str; | |
3603 | if (non_mangled (unit->lang)) | |
3604 | func->is_linkage = TRUE; | |
3605 | } | |
252b5132 | 3606 | break; |
98591c73 | 3607 | |
643be349 | 3608 | case DW_AT_linkage_name: |
252b5132 | 3609 | case DW_AT_MIPS_linkage_name: |
60d77146 NC |
3610 | /* PR 16949: Corrupt debug info can place |
3611 | non-string forms into these attributes. */ | |
3612 | if (is_str_attr (attr.form)) | |
e00e8198 AM |
3613 | { |
3614 | func->name = attr.u.str; | |
3615 | func->is_linkage = TRUE; | |
3616 | } | |
252b5132 RH |
3617 | break; |
3618 | ||
3619 | case DW_AT_low_pc: | |
a13afe8e | 3620 | low_pc = attr.u.val; |
252b5132 RH |
3621 | break; |
3622 | ||
3623 | case DW_AT_high_pc: | |
a13afe8e | 3624 | high_pc = attr.u.val; |
c49ead2f | 3625 | high_pc_relative = attr.form != DW_FORM_addr; |
a13afe8e FF |
3626 | break; |
3627 | ||
3628 | case DW_AT_ranges: | |
8af6b354 AM |
3629 | if (!read_rangelist (unit, &func->arange, attr.u.val)) |
3630 | goto fail; | |
252b5132 RH |
3631 | break; |
3632 | ||
5420f73d L |
3633 | case DW_AT_decl_file: |
3634 | func->file = concat_filename (unit->line_table, | |
3635 | attr.u.val); | |
3636 | break; | |
3637 | ||
3638 | case DW_AT_decl_line: | |
3639 | func->line = attr.u.val; | |
3640 | break; | |
3641 | ||
3642 | default: | |
3643 | break; | |
3644 | } | |
3645 | } | |
3646 | else if (var) | |
3647 | { | |
3648 | switch (attr.name) | |
3649 | { | |
f3a08f77 NC |
3650 | case DW_AT_specification: |
3651 | if (attr.u.val) | |
3652 | { | |
3653 | struct varinfo * spec_var; | |
3654 | ||
aec72fda AM |
3655 | spec_var = lookup_var_by_offset (attr.u.val, |
3656 | unit->variable_table); | |
f3a08f77 | 3657 | if (spec_var == NULL) |
e6f04d55 | 3658 | { |
aec72fda AM |
3659 | _bfd_error_handler (_("DWARF error: could not find " |
3660 | "variable specification " | |
ca8f6bc6 | 3661 | "at offset 0x%lx"), |
aec72fda | 3662 | (unsigned long) attr.u.val); |
f3a08f77 NC |
3663 | break; |
3664 | } | |
3665 | ||
3666 | if (var->name == NULL) | |
3667 | var->name = spec_var->name; | |
aec72fda | 3668 | if (var->file == NULL && spec_var->file != NULL) |
f3a08f77 NC |
3669 | var->file = strdup (spec_var->file); |
3670 | if (var->line == 0) | |
3671 | var->line = spec_var->line; | |
3672 | if (var->sec == NULL) | |
3673 | var->sec = spec_var->sec; | |
3674 | } | |
3675 | break; | |
3676 | ||
5420f73d | 3677 | case DW_AT_name: |
11855d8a AM |
3678 | if (is_str_attr (attr.form)) |
3679 | var->name = attr.u.str; | |
5420f73d L |
3680 | break; |
3681 | ||
3682 | case DW_AT_decl_file: | |
3683 | var->file = concat_filename (unit->line_table, | |
3684 | attr.u.val); | |
3685 | break; | |
3686 | ||
3687 | case DW_AT_decl_line: | |
3688 | var->line = attr.u.val; | |
3689 | break; | |
3690 | ||
3691 | case DW_AT_external: | |
3692 | if (attr.u.val != 0) | |
f3a08f77 | 3693 | var->stack = FALSE; |
5420f73d L |
3694 | break; |
3695 | ||
3696 | case DW_AT_location: | |
5cf2e3f0 | 3697 | switch (attr.form) |
5420f73d | 3698 | { |
5cf2e3f0 L |
3699 | case DW_FORM_block: |
3700 | case DW_FORM_block1: | |
3701 | case DW_FORM_block2: | |
3702 | case DW_FORM_block4: | |
c07cbdd7 | 3703 | case DW_FORM_exprloc: |
0d76029f AM |
3704 | if (attr.u.blk->data != NULL |
3705 | && *attr.u.blk->data == DW_OP_addr) | |
5420f73d | 3706 | { |
f3a08f77 | 3707 | var->stack = FALSE; |
98b880f4 JW |
3708 | |
3709 | /* Verify that DW_OP_addr is the only opcode in the | |
3710 | location, in which case the block size will be 1 | |
3711 | plus the address size. */ | |
3712 | /* ??? For TLS variables, gcc can emit | |
3713 | DW_OP_addr <addr> DW_OP_GNU_push_tls_address | |
3714 | which we don't handle here yet. */ | |
3715 | if (attr.u.blk->size == unit->addr_size + 1U) | |
3716 | var->addr = bfd_get (unit->addr_size * 8, | |
3717 | unit->abfd, | |
3718 | attr.u.blk->data + 1); | |
5420f73d | 3719 | } |
5cf2e3f0 | 3720 | break; |
d8d1c398 | 3721 | |
5cf2e3f0 L |
3722 | default: |
3723 | break; | |
5420f73d L |
3724 | } |
3725 | break; | |
3726 | ||
252b5132 RH |
3727 | default: |
3728 | break; | |
3729 | } | |
3730 | } | |
3731 | } | |
3732 | ||
ca8f6bc6 NC |
3733 | if (abbrev->has_children) |
3734 | nesting_level++; | |
3735 | ||
c49ead2f MW |
3736 | if (high_pc_relative) |
3737 | high_pc += low_pc; | |
3738 | ||
a13afe8e FF |
3739 | if (func && high_pc != 0) |
3740 | { | |
a2a50954 | 3741 | if (!arange_add (unit, &func->arange, low_pc, high_pc)) |
8af6b354 | 3742 | goto fail; |
a13afe8e | 3743 | } |
252b5132 RH |
3744 | } |
3745 | ||
c955f9cd | 3746 | free (nested_funcs); |
b34976b6 | 3747 | return TRUE; |
8af6b354 AM |
3748 | |
3749 | fail: | |
3750 | free (nested_funcs); | |
3751 | return FALSE; | |
252b5132 RH |
3752 | } |
3753 | ||
dfc19da6 | 3754 | /* Parse a DWARF2 compilation unit starting at INFO_PTR. UNIT_LENGTH |
5e38c3b8 | 3755 | includes the compilation unit header that proceeds the DIE's, but |
5c4491d3 | 3756 | does not include the length field that precedes each compilation |
5e38c3b8 | 3757 | unit header. END_PTR points one past the end of this comp unit. |
d03ba2a1 | 3758 | OFFSET_SIZE is the size of DWARF2 offsets (either 4 or 8 bytes). |
252b5132 RH |
3759 | |
3760 | This routine does not read the whole compilation unit; only enough | |
3761 | to get to the line number information for the compilation unit. */ | |
3762 | ||
3763 | static struct comp_unit * | |
0d161102 | 3764 | parse_comp_unit (struct dwarf2_debug *stash, |
99b06c60 AM |
3765 | struct dwarf2_debug_file *file, |
3766 | bfd_byte *info_ptr, | |
818a27ac | 3767 | bfd_vma unit_length, |
f075ee0c | 3768 | bfd_byte *info_ptr_unit, |
818a27ac | 3769 | unsigned int offset_size) |
252b5132 RH |
3770 | { |
3771 | struct comp_unit* unit; | |
f46c2da6 | 3772 | unsigned int version; |
8ce8c090 | 3773 | bfd_uint64_t abbrev_offset = 0; |
0041f7df JK |
3774 | /* Initialize it just to avoid a GCC false warning. */ |
3775 | unsigned int addr_size = -1; | |
252b5132 | 3776 | struct abbrev_info** abbrevs; |
252b5132 RH |
3777 | unsigned int abbrev_number, bytes_read, i; |
3778 | struct abbrev_info *abbrev; | |
3779 | struct attribute attr; | |
f075ee0c | 3780 | bfd_byte *end_ptr = info_ptr + unit_length; |
986f0783 | 3781 | size_t amt; |
a13afe8e FF |
3782 | bfd_vma low_pc = 0; |
3783 | bfd_vma high_pc = 0; | |
99b06c60 | 3784 | bfd *abfd = file->bfd_ptr; |
c49ead2f | 3785 | bfd_boolean high_pc_relative = FALSE; |
0041f7df | 3786 | enum dwarf_unit_type unit_type; |
3fde5a36 | 3787 | |
dbb3fbbb | 3788 | version = read_2_bytes (abfd, info_ptr, end_ptr); |
252b5132 | 3789 | info_ptr += 2; |
0041f7df | 3790 | if (version < 2 || version > 5) |
252b5132 | 3791 | { |
67f101ee NC |
3792 | /* PR 19872: A version number of 0 probably means that there is padding |
3793 | at the end of the .debug_info section. Gold puts it there when | |
3794 | performing an incremental link, for example. So do not generate | |
3795 | an error, just return a NULL. */ | |
3796 | if (version) | |
3797 | { | |
4eca0228 | 3798 | _bfd_error_handler |
9793eb77 AM |
3799 | (_("DWARF error: found dwarf version '%u', this reader" |
3800 | " only handles version 2, 3, 4 and 5 information"), version); | |
67f101ee NC |
3801 | bfd_set_error (bfd_error_bad_value); |
3802 | } | |
3803 | return NULL; | |
252b5132 RH |
3804 | } |
3805 | ||
0041f7df JK |
3806 | if (version < 5) |
3807 | unit_type = DW_UT_compile; | |
3808 | else | |
3809 | { | |
3810 | unit_type = read_1_byte (abfd, info_ptr, end_ptr); | |
3811 | info_ptr += 1; | |
3812 | ||
3813 | addr_size = read_1_byte (abfd, info_ptr, end_ptr); | |
3814 | info_ptr += 1; | |
3815 | } | |
3816 | ||
3817 | BFD_ASSERT (offset_size == 4 || offset_size == 8); | |
3818 | if (offset_size == 4) | |
3819 | abbrev_offset = read_4_bytes (abfd, info_ptr, end_ptr); | |
3820 | else | |
3821 | abbrev_offset = read_8_bytes (abfd, info_ptr, end_ptr); | |
3822 | info_ptr += offset_size; | |
3823 | ||
3824 | if (version < 5) | |
3825 | { | |
3826 | addr_size = read_1_byte (abfd, info_ptr, end_ptr); | |
3827 | info_ptr += 1; | |
3828 | } | |
3829 | ||
3830 | if (unit_type == DW_UT_type) | |
3831 | { | |
3832 | /* Skip type signature. */ | |
3833 | info_ptr += 8; | |
3834 | ||
3835 | /* Skip type offset. */ | |
3836 | info_ptr += offset_size; | |
3837 | } | |
3838 | ||
252b5132 RH |
3839 | if (addr_size > sizeof (bfd_vma)) |
3840 | { | |
4eca0228 | 3841 | _bfd_error_handler |
695344c0 | 3842 | /* xgettext: c-format */ |
9793eb77 AM |
3843 | (_("DWARF error: found address size '%u', this reader" |
3844 | " can not handle sizes greater than '%u'"), | |
a2a50954 AM |
3845 | addr_size, |
3846 | (unsigned int) sizeof (bfd_vma)); | |
252b5132 | 3847 | bfd_set_error (bfd_error_bad_value); |
67f101ee | 3848 | return NULL; |
252b5132 RH |
3849 | } |
3850 | ||
ecb651f0 | 3851 | if (addr_size != 2 && addr_size != 4 && addr_size != 8) |
252b5132 | 3852 | { |
4eca0228 | 3853 | _bfd_error_handler |
9793eb77 AM |
3854 | ("DWARF error: found address size '%u', this reader" |
3855 | " can only handle address sizes '2', '4' and '8'", addr_size); | |
252b5132 | 3856 | bfd_set_error (bfd_error_bad_value); |
67f101ee | 3857 | return NULL; |
252b5132 RH |
3858 | } |
3859 | ||
a092b084 | 3860 | /* Read the abbrevs for this compilation unit into a table. */ |
99b06c60 | 3861 | abbrevs = read_abbrevs (abfd, abbrev_offset, stash, file); |
252b5132 | 3862 | if (! abbrevs) |
67f101ee | 3863 | return NULL; |
252b5132 | 3864 | |
4265548c PA |
3865 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
3866 | FALSE, end_ptr); | |
252b5132 RH |
3867 | info_ptr += bytes_read; |
3868 | if (! abbrev_number) | |
3869 | { | |
67f101ee NC |
3870 | /* PR 19872: An abbrev number of 0 probably means that there is padding |
3871 | at the end of the .debug_abbrev section. Gold puts it there when | |
3872 | performing an incremental link, for example. So do not generate | |
3873 | an error, just return a NULL. */ | |
3874 | return NULL; | |
252b5132 RH |
3875 | } |
3876 | ||
3877 | abbrev = lookup_abbrev (abbrev_number, abbrevs); | |
3878 | if (! abbrev) | |
3879 | { | |
9793eb77 | 3880 | _bfd_error_handler (_("DWARF error: could not find abbrev number %u"), |
4eca0228 | 3881 | abbrev_number); |
252b5132 | 3882 | bfd_set_error (bfd_error_bad_value); |
67f101ee | 3883 | return NULL; |
252b5132 | 3884 | } |
98591c73 | 3885 | |
dc810e39 | 3886 | amt = sizeof (struct comp_unit); |
a50b1753 | 3887 | unit = (struct comp_unit *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
3888 | if (unit == NULL) |
3889 | return NULL; | |
252b5132 | 3890 | unit->abfd = abfd; |
5609a71e | 3891 | unit->version = version; |
98591c73 | 3892 | unit->addr_size = addr_size; |
d03ba2a1 | 3893 | unit->offset_size = offset_size; |
252b5132 RH |
3894 | unit->abbrevs = abbrevs; |
3895 | unit->end_ptr = end_ptr; | |
d03ba2a1 | 3896 | unit->stash = stash; |
99b06c60 | 3897 | unit->file = file; |
c0c28ab8 | 3898 | unit->info_ptr_unit = info_ptr_unit; |
252b5132 RH |
3899 | |
3900 | for (i = 0; i < abbrev->num_attrs; ++i) | |
3901 | { | |
dbb3fbbb | 3902 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr, end_ptr); |
8af6b354 AM |
3903 | if (info_ptr == NULL) |
3904 | return NULL; | |
252b5132 RH |
3905 | |
3906 | /* Store the data if it is of an attribute we want to keep in a | |
3907 | partial symbol table. */ | |
3908 | switch (attr.name) | |
3909 | { | |
3910 | case DW_AT_stmt_list: | |
3911 | unit->stmtlist = 1; | |
482e2e37 | 3912 | unit->line_offset = attr.u.val; |
252b5132 RH |
3913 | break; |
3914 | ||
3915 | case DW_AT_name: | |
11855d8a AM |
3916 | if (is_str_attr (attr.form)) |
3917 | unit->name = attr.u.str; | |
252b5132 RH |
3918 | break; |
3919 | ||
3920 | case DW_AT_low_pc: | |
a13afe8e FF |
3921 | low_pc = attr.u.val; |
3922 | /* If the compilation unit DIE has a DW_AT_low_pc attribute, | |
3923 | this is the base address to use when reading location | |
089e3718 | 3924 | lists or range lists. */ |
a2a50954 AM |
3925 | if (abbrev->tag == DW_TAG_compile_unit) |
3926 | unit->base_address = low_pc; | |
252b5132 RH |
3927 | break; |
3928 | ||
3929 | case DW_AT_high_pc: | |
a13afe8e | 3930 | high_pc = attr.u.val; |
c49ead2f | 3931 | high_pc_relative = attr.form != DW_FORM_addr; |
a13afe8e FF |
3932 | break; |
3933 | ||
3934 | case DW_AT_ranges: | |
8af6b354 AM |
3935 | if (!read_rangelist (unit, &unit->arange, attr.u.val)) |
3936 | return NULL; | |
252b5132 RH |
3937 | break; |
3938 | ||
3939 | case DW_AT_comp_dir: | |
3940 | { | |
f075ee0c | 3941 | char *comp_dir = attr.u.str; |
877a8638 NC |
3942 | |
3943 | /* PR 17512: file: 1fe726be. */ | |
3944 | if (! is_str_attr (attr.form)) | |
3945 | { | |
4eca0228 | 3946 | _bfd_error_handler |
9793eb77 | 3947 | (_("DWARF error: DW_AT_comp_dir attribute encountered with a non-string form")); |
877a8638 NC |
3948 | comp_dir = NULL; |
3949 | } | |
3950 | ||
252b5132 RH |
3951 | if (comp_dir) |
3952 | { | |
3953 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
3954 | directory, get rid of it. */ | |
818a27ac | 3955 | char *cp = strchr (comp_dir, ':'); |
252b5132 RH |
3956 | |
3957 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
3958 | comp_dir = cp + 1; | |
3959 | } | |
3960 | unit->comp_dir = comp_dir; | |
3961 | break; | |
3962 | } | |
3963 | ||
e00e8198 AM |
3964 | case DW_AT_language: |
3965 | unit->lang = attr.u.val; | |
3966 | break; | |
3967 | ||
252b5132 RH |
3968 | default: |
3969 | break; | |
3970 | } | |
3971 | } | |
c49ead2f MW |
3972 | if (high_pc_relative) |
3973 | high_pc += low_pc; | |
a13afe8e | 3974 | if (high_pc != 0) |
709d67f1 | 3975 | { |
a2a50954 | 3976 | if (!arange_add (unit, &unit->arange, low_pc, high_pc)) |
8af6b354 | 3977 | return NULL; |
709d67f1 | 3978 | } |
252b5132 RH |
3979 | |
3980 | unit->first_child_die_ptr = info_ptr; | |
3981 | return unit; | |
3982 | } | |
3983 | ||
6dd55cb7 L |
3984 | /* Return TRUE if UNIT may contain the address given by ADDR. When |
3985 | there are functions written entirely with inline asm statements, the | |
3986 | range info in the compilation unit header may not be correct. We | |
3987 | need to consult the line info table to see if a compilation unit | |
3988 | really contains the given address. */ | |
252b5132 | 3989 | |
b34976b6 | 3990 | static bfd_boolean |
818a27ac | 3991 | comp_unit_contains_address (struct comp_unit *unit, bfd_vma addr) |
252b5132 | 3992 | { |
709d67f1 AM |
3993 | struct arange *arange; |
3994 | ||
3995 | if (unit->error) | |
3996 | return FALSE; | |
3997 | ||
3998 | arange = &unit->arange; | |
3999 | do | |
4000 | { | |
4001 | if (addr >= arange->low && addr < arange->high) | |
4002 | return TRUE; | |
4003 | arange = arange->next; | |
4004 | } | |
4005 | while (arange); | |
4006 | ||
4007 | return FALSE; | |
252b5132 RH |
4008 | } |
4009 | ||
252b5132 RH |
4010 | /* If UNIT contains ADDR, set the output parameters to the values for |
4011 | the line containing ADDR. The output parameters, FILENAME_PTR, | |
e00e8198 | 4012 | FUNCTION_PTR, and LINENUMBER_PTR, are pointers to the objects |
98591c73 | 4013 | to be filled in. |
252b5132 | 4014 | |
240d6706 NC |
4015 | Returns the range of addresses covered by the entry that was used |
4016 | to fill in *LINENUMBER_PTR or 0 if it was not filled in. */ | |
252b5132 | 4017 | |
240d6706 | 4018 | static bfd_vma |
818a27ac AM |
4019 | comp_unit_find_nearest_line (struct comp_unit *unit, |
4020 | bfd_vma addr, | |
4021 | const char **filename_ptr, | |
e00e8198 | 4022 | struct funcinfo **function_ptr, |
818a27ac | 4023 | unsigned int *linenumber_ptr, |
99b06c60 | 4024 | unsigned int *discriminator_ptr) |
252b5132 | 4025 | { |
b34976b6 | 4026 | bfd_boolean func_p; |
98591c73 | 4027 | |
99b06c60 | 4028 | if (!comp_unit_maybe_decode_line_info (unit)) |
b34976b6 | 4029 | return FALSE; |
252b5132 | 4030 | |
e00e8198 AM |
4031 | *function_ptr = NULL; |
4032 | func_p = lookup_address_in_function_table (unit, addr, function_ptr); | |
4033 | if (func_p && (*function_ptr)->tag == DW_TAG_inlined_subroutine) | |
99b06c60 | 4034 | unit->stash->inliner_chain = *function_ptr; |
240d6706 NC |
4035 | |
4036 | return lookup_address_in_line_info_table (unit->line_table, addr, | |
4037 | filename_ptr, | |
4038 | linenumber_ptr, | |
4039 | discriminator_ptr); | |
252b5132 RH |
4040 | } |
4041 | ||
bd210d54 NC |
4042 | /* Check to see if line info is already decoded in a comp_unit. |
4043 | If not, decode it. Returns TRUE if no errors were encountered; | |
5420f73d L |
4044 | FALSE otherwise. */ |
4045 | ||
4046 | static bfd_boolean | |
99b06c60 | 4047 | comp_unit_maybe_decode_line_info (struct comp_unit *unit) |
5420f73d L |
4048 | { |
4049 | if (unit->error) | |
4050 | return FALSE; | |
4051 | ||
4052 | if (! unit->line_table) | |
4053 | { | |
4054 | if (! unit->stmtlist) | |
4055 | { | |
4056 | unit->error = 1; | |
4057 | return FALSE; | |
4058 | } | |
4059 | ||
99b06c60 | 4060 | unit->line_table = decode_line_info (unit); |
5420f73d L |
4061 | |
4062 | if (! unit->line_table) | |
4063 | { | |
4064 | unit->error = 1; | |
4065 | return FALSE; | |
4066 | } | |
4067 | ||
4068 | if (unit->first_child_die_ptr < unit->end_ptr | |
4069 | && ! scan_unit_for_symbols (unit)) | |
4070 | { | |
4071 | unit->error = 1; | |
4072 | return FALSE; | |
4073 | } | |
4074 | } | |
4075 | ||
bd210d54 NC |
4076 | return TRUE; |
4077 | } | |
4078 | ||
4079 | /* If UNIT contains SYM at ADDR, set the output parameters to the | |
4080 | values for the line containing SYM. The output parameters, | |
4081 | FILENAME_PTR, and LINENUMBER_PTR, are pointers to the objects to be | |
4082 | filled in. | |
4083 | ||
4084 | Return TRUE if UNIT contains SYM, and no errors were encountered; | |
4085 | FALSE otherwise. */ | |
4086 | ||
4087 | static bfd_boolean | |
4088 | comp_unit_find_line (struct comp_unit *unit, | |
4089 | asymbol *sym, | |
4090 | bfd_vma addr, | |
4091 | const char **filename_ptr, | |
99b06c60 | 4092 | unsigned int *linenumber_ptr) |
bd210d54 | 4093 | { |
99b06c60 | 4094 | if (!comp_unit_maybe_decode_line_info (unit)) |
bd210d54 NC |
4095 | return FALSE; |
4096 | ||
5420f73d L |
4097 | if (sym->flags & BSF_FUNCTION) |
4098 | return lookup_symbol_in_function_table (unit, sym, addr, | |
4099 | filename_ptr, | |
4100 | linenumber_ptr); | |
bd210d54 NC |
4101 | |
4102 | return lookup_symbol_in_variable_table (unit, sym, addr, | |
4103 | filename_ptr, | |
4104 | linenumber_ptr); | |
4105 | } | |
4106 | ||
4107 | static struct funcinfo * | |
4108 | reverse_funcinfo_list (struct funcinfo *head) | |
4109 | { | |
4110 | struct funcinfo *rhead; | |
4111 | struct funcinfo *temp; | |
4112 | ||
4113 | for (rhead = NULL; head; head = temp) | |
4114 | { | |
4115 | temp = head->prev_func; | |
4116 | head->prev_func = rhead; | |
4117 | rhead = head; | |
4118 | } | |
4119 | return rhead; | |
4120 | } | |
4121 | ||
4122 | static struct varinfo * | |
4123 | reverse_varinfo_list (struct varinfo *head) | |
4124 | { | |
4125 | struct varinfo *rhead; | |
4126 | struct varinfo *temp; | |
4127 | ||
4128 | for (rhead = NULL; head; head = temp) | |
4129 | { | |
4130 | temp = head->prev_var; | |
4131 | head->prev_var = rhead; | |
4132 | rhead = head; | |
4133 | } | |
4134 | return rhead; | |
4135 | } | |
4136 | ||
4137 | /* Extract all interesting funcinfos and varinfos of a compilation | |
4138 | unit into hash tables for faster lookup. Returns TRUE if no | |
4139 | errors were enountered; FALSE otherwise. */ | |
4140 | ||
4141 | static bfd_boolean | |
4142 | comp_unit_hash_info (struct dwarf2_debug *stash, | |
4143 | struct comp_unit *unit, | |
4144 | struct info_hash_table *funcinfo_hash_table, | |
4145 | struct info_hash_table *varinfo_hash_table) | |
4146 | { | |
4147 | struct funcinfo* each_func; | |
4148 | struct varinfo* each_var; | |
4149 | bfd_boolean okay = TRUE; | |
4150 | ||
4151 | BFD_ASSERT (stash->info_hash_status != STASH_INFO_HASH_DISABLED); | |
4152 | ||
99b06c60 | 4153 | if (!comp_unit_maybe_decode_line_info (unit)) |
bd210d54 NC |
4154 | return FALSE; |
4155 | ||
4156 | BFD_ASSERT (!unit->cached); | |
4157 | ||
4158 | /* To preserve the original search order, we went to visit the function | |
4159 | infos in the reversed order of the list. However, making the list | |
4160 | bi-directional use quite a bit of extra memory. So we reverse | |
4161 | the list first, traverse the list in the now reversed order and | |
4162 | finally reverse the list again to get back the original order. */ | |
4163 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
4164 | for (each_func = unit->function_table; | |
4165 | each_func && okay; | |
4166 | each_func = each_func->prev_func) | |
4167 | { | |
089e3718 | 4168 | /* Skip nameless functions. */ |
bd210d54 NC |
4169 | if (each_func->name) |
4170 | /* There is no need to copy name string into hash table as | |
4171 | name string is either in the dwarf string buffer or | |
4172 | info in the stash. */ | |
4173 | okay = insert_info_hash_table (funcinfo_hash_table, each_func->name, | |
4174 | (void*) each_func, FALSE); | |
4175 | } | |
4176 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
4177 | if (!okay) | |
4178 | return FALSE; | |
4179 | ||
4180 | /* We do the same for variable infos. */ | |
4181 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
4182 | for (each_var = unit->variable_table; | |
4183 | each_var && okay; | |
4184 | each_var = each_var->prev_var) | |
4185 | { | |
4186 | /* Skip stack vars and vars with no files or names. */ | |
f3a08f77 | 4187 | if (! each_var->stack |
bd210d54 NC |
4188 | && each_var->file != NULL |
4189 | && each_var->name != NULL) | |
4190 | /* There is no need to copy name string into hash table as | |
4191 | name string is either in the dwarf string buffer or | |
4192 | info in the stash. */ | |
4193 | okay = insert_info_hash_table (varinfo_hash_table, each_var->name, | |
4194 | (void*) each_var, FALSE); | |
4195 | } | |
4196 | ||
4197 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
4198 | unit->cached = TRUE; | |
4199 | return okay; | |
5420f73d L |
4200 | } |
4201 | ||
e2f6d277 NC |
4202 | /* Locate a section in a BFD containing debugging info. The search starts |
4203 | from the section after AFTER_SEC, or from the first section in the BFD if | |
4204 | AFTER_SEC is NULL. The search works by examining the names of the | |
fc28f9aa TG |
4205 | sections. There are three permissiable names. The first two are given |
4206 | by DEBUG_SECTIONS[debug_info] (whose standard DWARF2 names are .debug_info | |
4207 | and .zdebug_info). The third is a prefix .gnu.linkonce.wi. | |
e2f6d277 NC |
4208 | This is a variation on the .debug_info section which has a checksum |
4209 | describing the contents appended onto the name. This allows the linker to | |
4210 | identify and discard duplicate debugging sections for different | |
4211 | compilation units. */ | |
a092b084 NC |
4212 | #define GNU_LINKONCE_INFO ".gnu.linkonce.wi." |
4213 | ||
4214 | static asection * | |
fc28f9aa | 4215 | find_debug_info (bfd *abfd, const struct dwarf_debug_section *debug_sections, |
93ee1e36 | 4216 | asection *after_sec) |
a092b084 | 4217 | { |
a2a50954 AM |
4218 | asection *msec; |
4219 | const char *look; | |
4220 | ||
4221 | if (after_sec == NULL) | |
4222 | { | |
4223 | look = debug_sections[debug_info].uncompressed_name; | |
4224 | msec = bfd_get_section_by_name (abfd, look); | |
4225 | if (msec != NULL) | |
4226 | return msec; | |
a092b084 | 4227 | |
a2a50954 AM |
4228 | look = debug_sections[debug_info].compressed_name; |
4229 | if (look != NULL) | |
4230 | { | |
4231 | msec = bfd_get_section_by_name (abfd, look); | |
4232 | if (msec != NULL) | |
4233 | return msec; | |
4234 | } | |
a092b084 | 4235 | |
a2a50954 | 4236 | for (msec = abfd->sections; msec != NULL; msec = msec->next) |
08dedd66 | 4237 | if (startswith (msec->name, GNU_LINKONCE_INFO)) |
a2a50954 AM |
4238 | return msec; |
4239 | ||
4240 | return NULL; | |
4241 | } | |
4242 | ||
4243 | for (msec = after_sec->next; msec != NULL; msec = msec->next) | |
a092b084 | 4244 | { |
a2a50954 AM |
4245 | look = debug_sections[debug_info].uncompressed_name; |
4246 | if (strcmp (msec->name, look) == 0) | |
a092b084 NC |
4247 | return msec; |
4248 | ||
a2a50954 AM |
4249 | look = debug_sections[debug_info].compressed_name; |
4250 | if (look != NULL && strcmp (msec->name, look) == 0) | |
1b315056 CS |
4251 | return msec; |
4252 | ||
08dedd66 | 4253 | if (startswith (msec->name, GNU_LINKONCE_INFO)) |
a092b084 | 4254 | return msec; |
a092b084 NC |
4255 | } |
4256 | ||
4257 | return NULL; | |
4258 | } | |
4259 | ||
93ee1e36 AM |
4260 | /* Transfer VMAs from object file to separate debug file. */ |
4261 | ||
4262 | static void | |
4263 | set_debug_vma (bfd *orig_bfd, bfd *debug_bfd) | |
4264 | { | |
4265 | asection *s, *d; | |
4266 | ||
4267 | for (s = orig_bfd->sections, d = debug_bfd->sections; | |
4268 | s != NULL && d != NULL; | |
4269 | s = s->next, d = d->next) | |
4270 | { | |
4271 | if ((d->flags & SEC_DEBUGGING) != 0) | |
4272 | break; | |
4273 | /* ??? Assumes 1-1 correspondence between sections in the | |
4274 | two files. */ | |
4275 | if (strcmp (s->name, d->name) == 0) | |
4276 | { | |
4277 | d->output_section = s->output_section; | |
4278 | d->output_offset = s->output_offset; | |
4279 | d->vma = s->vma; | |
4280 | } | |
4281 | } | |
4282 | } | |
4283 | ||
e7679060 AM |
4284 | /* If the dwarf2 info was found in a separate debug file, return the |
4285 | debug file section corresponding to the section in the original file | |
4286 | and the debug file symbols. */ | |
4287 | ||
4288 | static void | |
4289 | _bfd_dwarf2_stash_syms (struct dwarf2_debug *stash, bfd *abfd, | |
4290 | asection **sec, asymbol ***syms) | |
4291 | { | |
99b06c60 | 4292 | if (stash->f.bfd_ptr != abfd) |
e7679060 AM |
4293 | { |
4294 | asection *s, *d; | |
4295 | ||
4296 | if (*sec == NULL) | |
4297 | { | |
99b06c60 | 4298 | *syms = stash->f.syms; |
e7679060 AM |
4299 | return; |
4300 | } | |
4301 | ||
99b06c60 | 4302 | for (s = abfd->sections, d = stash->f.bfd_ptr->sections; |
e7679060 AM |
4303 | s != NULL && d != NULL; |
4304 | s = s->next, d = d->next) | |
4305 | { | |
4306 | if ((d->flags & SEC_DEBUGGING) != 0) | |
4307 | break; | |
4308 | if (s == *sec | |
4309 | && strcmp (s->name, d->name) == 0) | |
4310 | { | |
4311 | *sec = d; | |
99b06c60 | 4312 | *syms = stash->f.syms; |
7f3bf384 | 4313 | break; |
e7679060 AM |
4314 | } |
4315 | } | |
4316 | } | |
4317 | } | |
4318 | ||
5609a71e | 4319 | /* Unset vmas for adjusted sections in STASH. */ |
d4c32a81 L |
4320 | |
4321 | static void | |
4322 | unset_sections (struct dwarf2_debug *stash) | |
4323 | { | |
93ee1e36 | 4324 | int i; |
5609a71e | 4325 | struct adjusted_section *p; |
d4c32a81 | 4326 | |
5609a71e DJ |
4327 | i = stash->adjusted_section_count; |
4328 | p = stash->adjusted_sections; | |
d4c32a81 L |
4329 | for (; i > 0; i--, p++) |
4330 | p->section->vma = 0; | |
4331 | } | |
4332 | ||
93ee1e36 AM |
4333 | /* Set VMAs for allocated and .debug_info sections in ORIG_BFD, a |
4334 | relocatable object file. VMAs are normally all zero in relocatable | |
4335 | object files, so if we want to distinguish locations in sections by | |
4336 | address we need to set VMAs so the sections do not overlap. We | |
4337 | also set VMA on .debug_info so that when we have multiple | |
4338 | .debug_info sections (or the linkonce variant) they also do not | |
4339 | overlap. The multiple .debug_info sections make up a single | |
4340 | logical section. ??? We should probably do the same for other | |
4341 | debug sections. */ | |
35ccda9e L |
4342 | |
4343 | static bfd_boolean | |
93ee1e36 | 4344 | place_sections (bfd *orig_bfd, struct dwarf2_debug *stash) |
35ccda9e | 4345 | { |
93ee1e36 | 4346 | bfd *abfd; |
5609a71e | 4347 | struct adjusted_section *p; |
93ee1e36 AM |
4348 | int i; |
4349 | const char *debug_info_name; | |
d4c32a81 | 4350 | |
5609a71e | 4351 | if (stash->adjusted_section_count != 0) |
35ccda9e | 4352 | { |
5609a71e DJ |
4353 | i = stash->adjusted_section_count; |
4354 | p = stash->adjusted_sections; | |
d4c32a81 L |
4355 | for (; i > 0; i--, p++) |
4356 | p->section->vma = p->adj_vma; | |
93ee1e36 | 4357 | return TRUE; |
d4c32a81 | 4358 | } |
93ee1e36 AM |
4359 | |
4360 | debug_info_name = stash->debug_sections[debug_info].uncompressed_name; | |
4361 | i = 0; | |
4362 | abfd = orig_bfd; | |
4363 | while (1) | |
d4c32a81 L |
4364 | { |
4365 | asection *sect; | |
35ccda9e | 4366 | |
d4c32a81 | 4367 | for (sect = abfd->sections; sect != NULL; sect = sect->next) |
35ccda9e | 4368 | { |
5609a71e DJ |
4369 | int is_debug_info; |
4370 | ||
cd0449ab | 4371 | if ((sect->output_section != NULL |
93ee1e36 AM |
4372 | && sect->output_section != sect |
4373 | && (sect->flags & SEC_DEBUGGING) == 0) | |
cd0449ab | 4374 | || sect->vma != 0) |
5609a71e DJ |
4375 | continue; |
4376 | ||
93ee1e36 | 4377 | is_debug_info = (strcmp (sect->name, debug_info_name) == 0 |
08dedd66 | 4378 | || startswith (sect->name, GNU_LINKONCE_INFO)); |
d4c32a81 | 4379 | |
93ee1e36 AM |
4380 | if (!((sect->flags & SEC_ALLOC) != 0 && abfd == orig_bfd) |
4381 | && !is_debug_info) | |
d4c32a81 L |
4382 | continue; |
4383 | ||
4384 | i++; | |
4385 | } | |
99b06c60 | 4386 | if (abfd == stash->f.bfd_ptr) |
93ee1e36 | 4387 | break; |
99b06c60 | 4388 | abfd = stash->f.bfd_ptr; |
93ee1e36 AM |
4389 | } |
4390 | ||
4391 | if (i <= 1) | |
4392 | stash->adjusted_section_count = -1; | |
4393 | else | |
4394 | { | |
4395 | bfd_vma last_vma = 0, last_dwarf = 0; | |
986f0783 | 4396 | size_t amt = i * sizeof (struct adjusted_section); |
d4c32a81 | 4397 | |
93ee1e36 AM |
4398 | p = (struct adjusted_section *) bfd_malloc (amt); |
4399 | if (p == NULL) | |
d4c32a81 L |
4400 | return FALSE; |
4401 | ||
5609a71e DJ |
4402 | stash->adjusted_sections = p; |
4403 | stash->adjusted_section_count = i; | |
d4c32a81 | 4404 | |
93ee1e36 AM |
4405 | abfd = orig_bfd; |
4406 | while (1) | |
d4c32a81 | 4407 | { |
93ee1e36 | 4408 | asection *sect; |
d4c32a81 | 4409 | |
93ee1e36 AM |
4410 | for (sect = abfd->sections; sect != NULL; sect = sect->next) |
4411 | { | |
4412 | bfd_size_type sz; | |
4413 | int is_debug_info; | |
5609a71e | 4414 | |
93ee1e36 AM |
4415 | if ((sect->output_section != NULL |
4416 | && sect->output_section != sect | |
4417 | && (sect->flags & SEC_DEBUGGING) == 0) | |
4418 | || sect->vma != 0) | |
4419 | continue; | |
5609a71e | 4420 | |
93ee1e36 | 4421 | is_debug_info = (strcmp (sect->name, debug_info_name) == 0 |
08dedd66 | 4422 | || startswith (sect->name, GNU_LINKONCE_INFO)); |
d4c32a81 | 4423 | |
93ee1e36 AM |
4424 | if (!((sect->flags & SEC_ALLOC) != 0 && abfd == orig_bfd) |
4425 | && !is_debug_info) | |
4426 | continue; | |
d4c32a81 | 4427 | |
93ee1e36 | 4428 | sz = sect->rawsize ? sect->rawsize : sect->size; |
5609a71e | 4429 | |
93ee1e36 AM |
4430 | if (is_debug_info) |
4431 | { | |
4432 | BFD_ASSERT (sect->alignment_power == 0); | |
4433 | sect->vma = last_dwarf; | |
4434 | last_dwarf += sz; | |
4435 | } | |
4436 | else | |
4437 | { | |
4438 | /* Align the new address to the current section | |
4439 | alignment. */ | |
4440 | last_vma = ((last_vma | |
29f628db DV |
4441 | + ~(-((bfd_vma) 1 << sect->alignment_power))) |
4442 | & (-((bfd_vma) 1 << sect->alignment_power))); | |
93ee1e36 AM |
4443 | sect->vma = last_vma; |
4444 | last_vma += sz; | |
4445 | } | |
d4c32a81 | 4446 | |
93ee1e36 AM |
4447 | p->section = sect; |
4448 | p->adj_vma = sect->vma; | |
4449 | p++; | |
4450 | } | |
99b06c60 | 4451 | if (abfd == stash->f.bfd_ptr) |
93ee1e36 | 4452 | break; |
99b06c60 | 4453 | abfd = stash->f.bfd_ptr; |
35ccda9e L |
4454 | } |
4455 | } | |
4456 | ||
99b06c60 AM |
4457 | if (orig_bfd != stash->f.bfd_ptr) |
4458 | set_debug_vma (orig_bfd, stash->f.bfd_ptr); | |
93ee1e36 | 4459 | |
35ccda9e L |
4460 | return TRUE; |
4461 | } | |
4462 | ||
bd210d54 NC |
4463 | /* Look up a funcinfo by name using the given info hash table. If found, |
4464 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
4465 | ||
4466 | This function returns TRUE if a funcinfo that matches the given symbol | |
4467 | and address is found with any error; otherwise it returns FALSE. */ | |
4468 | ||
4469 | static bfd_boolean | |
4470 | info_hash_lookup_funcinfo (struct info_hash_table *hash_table, | |
4471 | asymbol *sym, | |
4472 | bfd_vma addr, | |
4473 | const char **filename_ptr, | |
4474 | unsigned int *linenumber_ptr) | |
4475 | { | |
4476 | struct funcinfo* each_func; | |
4477 | struct funcinfo* best_fit = NULL; | |
4ba3b326 | 4478 | bfd_vma best_fit_len = 0; |
bd210d54 NC |
4479 | struct info_list_node *node; |
4480 | struct arange *arange; | |
4481 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 4482 | asection *sec = bfd_asymbol_section (sym); |
bd210d54 NC |
4483 | |
4484 | for (node = lookup_info_hash_table (hash_table, name); | |
4485 | node; | |
4486 | node = node->next) | |
4487 | { | |
a50b1753 | 4488 | each_func = (struct funcinfo *) node->info; |
bd210d54 NC |
4489 | for (arange = &each_func->arange; |
4490 | arange; | |
4491 | arange = arange->next) | |
4492 | { | |
4493 | if ((!each_func->sec || each_func->sec == sec) | |
4494 | && addr >= arange->low | |
4495 | && addr < arange->high | |
4496 | && (!best_fit | |
4ba3b326 TG |
4497 | || arange->high - arange->low < best_fit_len)) |
4498 | { | |
4499 | best_fit = each_func; | |
4500 | best_fit_len = arange->high - arange->low; | |
4501 | } | |
bd210d54 NC |
4502 | } |
4503 | } | |
4504 | ||
4505 | if (best_fit) | |
4506 | { | |
4507 | best_fit->sec = sec; | |
4508 | *filename_ptr = best_fit->file; | |
4509 | *linenumber_ptr = best_fit->line; | |
4510 | return TRUE; | |
4511 | } | |
4512 | ||
4513 | return FALSE; | |
4514 | } | |
4515 | ||
4516 | /* Look up a varinfo by name using the given info hash table. If found, | |
4517 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
4518 | ||
4519 | This function returns TRUE if a varinfo that matches the given symbol | |
4520 | and address is found with any error; otherwise it returns FALSE. */ | |
4521 | ||
4522 | static bfd_boolean | |
4523 | info_hash_lookup_varinfo (struct info_hash_table *hash_table, | |
4524 | asymbol *sym, | |
4525 | bfd_vma addr, | |
4526 | const char **filename_ptr, | |
4527 | unsigned int *linenumber_ptr) | |
4528 | { | |
4529 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 4530 | asection *sec = bfd_asymbol_section (sym); |
bd210d54 NC |
4531 | struct varinfo* each; |
4532 | struct info_list_node *node; | |
4533 | ||
4534 | for (node = lookup_info_hash_table (hash_table, name); | |
4535 | node; | |
4536 | node = node->next) | |
4537 | { | |
a50b1753 | 4538 | each = (struct varinfo *) node->info; |
bd210d54 NC |
4539 | if (each->addr == addr |
4540 | && (!each->sec || each->sec == sec)) | |
4541 | { | |
4542 | each->sec = sec; | |
4543 | *filename_ptr = each->file; | |
4544 | *linenumber_ptr = each->line; | |
4545 | return TRUE; | |
4546 | } | |
4547 | } | |
4548 | ||
4549 | return FALSE; | |
4550 | } | |
4551 | ||
4552 | /* Update the funcinfo and varinfo info hash tables if they are | |
4553 | not up to date. Returns TRUE if there is no error; otherwise | |
4554 | returns FALSE and disable the info hash tables. */ | |
4555 | ||
4556 | static bfd_boolean | |
4557 | stash_maybe_update_info_hash_tables (struct dwarf2_debug *stash) | |
4558 | { | |
4559 | struct comp_unit *each; | |
4560 | ||
4561 | /* Exit if hash tables are up-to-date. */ | |
99b06c60 | 4562 | if (stash->f.all_comp_units == stash->hash_units_head) |
bd210d54 NC |
4563 | return TRUE; |
4564 | ||
4565 | if (stash->hash_units_head) | |
4566 | each = stash->hash_units_head->prev_unit; | |
4567 | else | |
99b06c60 | 4568 | each = stash->f.last_comp_unit; |
bd210d54 NC |
4569 | |
4570 | while (each) | |
4571 | { | |
4572 | if (!comp_unit_hash_info (stash, each, stash->funcinfo_hash_table, | |
4573 | stash->varinfo_hash_table)) | |
4574 | { | |
4575 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
4576 | return FALSE; | |
4577 | } | |
4578 | each = each->prev_unit; | |
4579 | } | |
4580 | ||
99b06c60 | 4581 | stash->hash_units_head = stash->f.all_comp_units; |
bd210d54 NC |
4582 | return TRUE; |
4583 | } | |
4584 | ||
089e3718 | 4585 | /* Check consistency of info hash tables. This is for debugging only. */ |
bd210d54 NC |
4586 | |
4587 | static void ATTRIBUTE_UNUSED | |
4588 | stash_verify_info_hash_table (struct dwarf2_debug *stash) | |
4589 | { | |
4590 | struct comp_unit *each_unit; | |
4591 | struct funcinfo *each_func; | |
4592 | struct varinfo *each_var; | |
4593 | struct info_list_node *node; | |
4594 | bfd_boolean found; | |
4595 | ||
99b06c60 | 4596 | for (each_unit = stash->f.all_comp_units; |
bd210d54 NC |
4597 | each_unit; |
4598 | each_unit = each_unit->next_unit) | |
4599 | { | |
4600 | for (each_func = each_unit->function_table; | |
4601 | each_func; | |
4602 | each_func = each_func->prev_func) | |
4603 | { | |
4604 | if (!each_func->name) | |
4605 | continue; | |
4606 | node = lookup_info_hash_table (stash->funcinfo_hash_table, | |
4607 | each_func->name); | |
4608 | BFD_ASSERT (node); | |
4609 | found = FALSE; | |
4610 | while (node && !found) | |
4611 | { | |
4612 | found = node->info == each_func; | |
4613 | node = node->next; | |
4614 | } | |
4615 | BFD_ASSERT (found); | |
4616 | } | |
4617 | ||
4618 | for (each_var = each_unit->variable_table; | |
4619 | each_var; | |
4620 | each_var = each_var->prev_var) | |
4621 | { | |
4622 | if (!each_var->name || !each_var->file || each_var->stack) | |
4623 | continue; | |
4624 | node = lookup_info_hash_table (stash->varinfo_hash_table, | |
4625 | each_var->name); | |
4626 | BFD_ASSERT (node); | |
4627 | found = FALSE; | |
4628 | while (node && !found) | |
4629 | { | |
4630 | found = node->info == each_var; | |
4631 | node = node->next; | |
4632 | } | |
4633 | BFD_ASSERT (found); | |
4634 | } | |
4635 | } | |
4636 | } | |
4637 | ||
4638 | /* Check to see if we want to enable the info hash tables, which consume | |
4639 | quite a bit of memory. Currently we only check the number times | |
4640 | bfd_dwarf2_find_line is called. In the future, we may also want to | |
4641 | take the number of symbols into account. */ | |
4642 | ||
4643 | static void | |
4644 | stash_maybe_enable_info_hash_tables (bfd *abfd, struct dwarf2_debug *stash) | |
4645 | { | |
4646 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_OFF); | |
4647 | ||
4648 | if (stash->info_hash_count++ < STASH_INFO_HASH_TRIGGER) | |
4649 | return; | |
4650 | ||
4651 | /* FIXME: Maybe we should check the reduce_memory_overheads | |
4652 | and optimize fields in the bfd_link_info structure ? */ | |
4653 | ||
4654 | /* Create hash tables. */ | |
4655 | stash->funcinfo_hash_table = create_info_hash_table (abfd); | |
4656 | stash->varinfo_hash_table = create_info_hash_table (abfd); | |
4657 | if (!stash->funcinfo_hash_table || !stash->varinfo_hash_table) | |
4658 | { | |
4659 | /* Turn off info hashes if any allocation above fails. */ | |
4660 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
4661 | return; | |
4662 | } | |
4663 | /* We need a forced update so that the info hash tables will | |
4664 | be created even though there is no compilation unit. That | |
4665 | happens if STASH_INFO_HASH_TRIGGER is 0. */ | |
e168da45 MF |
4666 | if (stash_maybe_update_info_hash_tables (stash)) |
4667 | stash->info_hash_status = STASH_INFO_HASH_ON; | |
bd210d54 NC |
4668 | } |
4669 | ||
4670 | /* Find the file and line associated with a symbol and address using the | |
4671 | info hash tables of a stash. If there is a match, the function returns | |
4672 | TRUE and update the locations pointed to by filename_ptr and linenumber_ptr; | |
4673 | otherwise it returns FALSE. */ | |
4674 | ||
4675 | static bfd_boolean | |
4676 | stash_find_line_fast (struct dwarf2_debug *stash, | |
4677 | asymbol *sym, | |
4678 | bfd_vma addr, | |
4679 | const char **filename_ptr, | |
4680 | unsigned int *linenumber_ptr) | |
4681 | { | |
4682 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_ON); | |
4683 | ||
4684 | if (sym->flags & BSF_FUNCTION) | |
4685 | return info_hash_lookup_funcinfo (stash->funcinfo_hash_table, sym, addr, | |
4686 | filename_ptr, linenumber_ptr); | |
4687 | return info_hash_lookup_varinfo (stash->varinfo_hash_table, sym, addr, | |
4688 | filename_ptr, linenumber_ptr); | |
4689 | } | |
4690 | ||
cd0449ab AM |
4691 | /* Save current section VMAs. */ |
4692 | ||
4693 | static bfd_boolean | |
4694 | save_section_vma (const bfd *abfd, struct dwarf2_debug *stash) | |
4695 | { | |
4696 | asection *s; | |
4697 | unsigned int i; | |
4698 | ||
4699 | if (abfd->section_count == 0) | |
4700 | return TRUE; | |
4701 | stash->sec_vma = bfd_malloc (sizeof (*stash->sec_vma) * abfd->section_count); | |
4702 | if (stash->sec_vma == NULL) | |
4703 | return FALSE; | |
d7f848c3 | 4704 | stash->sec_vma_count = abfd->section_count; |
0eb32b6e AM |
4705 | for (i = 0, s = abfd->sections; |
4706 | s != NULL && i < abfd->section_count; | |
4707 | i++, s = s->next) | |
cd0449ab AM |
4708 | { |
4709 | if (s->output_section != NULL) | |
4710 | stash->sec_vma[i] = s->output_section->vma + s->output_offset; | |
4711 | else | |
4712 | stash->sec_vma[i] = s->vma; | |
4713 | } | |
4714 | return TRUE; | |
4715 | } | |
4716 | ||
4717 | /* Compare current section VMAs against those at the time the stash | |
4718 | was created. If find_nearest_line is used in linker warnings or | |
4719 | errors early in the link process, the debug info stash will be | |
4720 | invalid for later calls. This is because we relocate debug info | |
4721 | sections, so the stashed section contents depend on symbol values, | |
4722 | which in turn depend on section VMAs. */ | |
4723 | ||
4724 | static bfd_boolean | |
4725 | section_vma_same (const bfd *abfd, const struct dwarf2_debug *stash) | |
4726 | { | |
4727 | asection *s; | |
4728 | unsigned int i; | |
4729 | ||
d7f848c3 NC |
4730 | /* PR 24334: If the number of sections in ABFD has changed between |
4731 | when the stash was created and now, then we cannot trust the | |
4732 | stashed vma information. */ | |
4733 | if (abfd->section_count != stash->sec_vma_count) | |
4734 | return FALSE; | |
4b24dd1a | 4735 | |
0eb32b6e AM |
4736 | for (i = 0, s = abfd->sections; |
4737 | s != NULL && i < abfd->section_count; | |
4738 | i++, s = s->next) | |
cd0449ab AM |
4739 | { |
4740 | bfd_vma vma; | |
4741 | ||
4742 | if (s->output_section != NULL) | |
4743 | vma = s->output_section->vma + s->output_offset; | |
4744 | else | |
4745 | vma = s->vma; | |
4746 | if (vma != stash->sec_vma[i]) | |
4747 | return FALSE; | |
4748 | } | |
4749 | return TRUE; | |
4750 | } | |
4751 | ||
2ca7691a TG |
4752 | /* Read debug information from DEBUG_BFD when DEBUG_BFD is specified. |
4753 | If DEBUG_BFD is not specified, we read debug information from ABFD | |
4754 | or its gnu_debuglink. The results will be stored in PINFO. | |
4755 | The function returns TRUE iff debug information is ready. */ | |
4756 | ||
4757 | bfd_boolean | |
4758 | _bfd_dwarf2_slurp_debug_info (bfd *abfd, bfd *debug_bfd, | |
93ee1e36 AM |
4759 | const struct dwarf_debug_section *debug_sections, |
4760 | asymbol **symbols, | |
4761 | void **pinfo, | |
4762 | bfd_boolean do_place) | |
2ca7691a | 4763 | { |
986f0783 | 4764 | size_t amt = sizeof (struct dwarf2_debug); |
2ca7691a TG |
4765 | bfd_size_type total_size; |
4766 | asection *msec; | |
4767 | struct dwarf2_debug *stash = (struct dwarf2_debug *) *pinfo; | |
4768 | ||
4769 | if (stash != NULL) | |
cd0449ab | 4770 | { |
90ed9b8b | 4771 | if (stash->orig_bfd == abfd |
07d6d2b8 AM |
4772 | && section_vma_same (abfd, stash)) |
4773 | { | |
4774 | /* Check that we did previously find some debug information | |
4775 | before attempting to make use of it. */ | |
99b06c60 | 4776 | if (stash->f.bfd_ptr != NULL) |
07d6d2b8 AM |
4777 | { |
4778 | if (do_place && !place_sections (abfd, stash)) | |
4779 | return FALSE; | |
4780 | return TRUE; | |
4781 | } | |
4782 | ||
4783 | return FALSE; | |
4784 | } | |
cd0449ab AM |
4785 | _bfd_dwarf2_cleanup_debug_info (abfd, pinfo); |
4786 | memset (stash, 0, amt); | |
4787 | } | |
4788 | else | |
4789 | { | |
4790 | stash = (struct dwarf2_debug *) bfd_zalloc (abfd, amt); | |
4791 | if (! stash) | |
4792 | return FALSE; | |
4793 | } | |
90ed9b8b | 4794 | stash->orig_bfd = abfd; |
2ca7691a | 4795 | stash->debug_sections = debug_sections; |
99b06c60 | 4796 | stash->f.syms = symbols; |
cd0449ab AM |
4797 | if (!save_section_vma (abfd, stash)) |
4798 | return FALSE; | |
2ca7691a | 4799 | |
e63ef095 AM |
4800 | stash->f.abbrev_offsets = htab_create_alloc (10, hash_abbrev, eq_abbrev, |
4801 | del_abbrev, calloc, free); | |
4802 | if (!stash->f.abbrev_offsets) | |
4803 | return FALSE; | |
4804 | ||
4805 | stash->alt.abbrev_offsets = htab_create_alloc (10, hash_abbrev, eq_abbrev, | |
4806 | del_abbrev, calloc, free); | |
4807 | if (!stash->alt.abbrev_offsets) | |
4808 | return FALSE; | |
4809 | ||
2ca7691a TG |
4810 | *pinfo = stash; |
4811 | ||
4812 | if (debug_bfd == NULL) | |
4813 | debug_bfd = abfd; | |
4814 | ||
4815 | msec = find_debug_info (debug_bfd, debug_sections, NULL); | |
4816 | if (msec == NULL && abfd == debug_bfd) | |
4817 | { | |
2425a30e NC |
4818 | char * debug_filename; |
4819 | ||
4820 | debug_filename = bfd_follow_build_id_debuglink (abfd, DEBUGDIR); | |
4821 | if (debug_filename == NULL) | |
4822 | debug_filename = bfd_follow_gnu_debuglink (abfd, DEBUGDIR); | |
2ca7691a TG |
4823 | |
4824 | if (debug_filename == NULL) | |
4825 | /* No dwarf2 info, and no gnu_debuglink to follow. | |
4826 | Note that at this point the stash has been allocated, but | |
4827 | contains zeros. This lets future calls to this function | |
4828 | fail more quickly. */ | |
4829 | return FALSE; | |
4830 | ||
22b31fea AM |
4831 | debug_bfd = bfd_openr (debug_filename, NULL); |
4832 | free (debug_filename); | |
4833 | if (debug_bfd == NULL) | |
4834 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
4835 | return FALSE; | |
4836 | ||
bf150a0b | 4837 | /* Set BFD_DECOMPRESS to decompress debug sections. */ |
22b31fea AM |
4838 | debug_bfd->flags |= BFD_DECOMPRESS; |
4839 | if (!bfd_check_format (debug_bfd, bfd_object) | |
2ca7691a | 4840 | || (msec = find_debug_info (debug_bfd, |
93ee1e36 AM |
4841 | debug_sections, NULL)) == NULL |
4842 | || !bfd_generic_link_read_symbols (debug_bfd)) | |
2ca7691a | 4843 | { |
22b31fea | 4844 | bfd_close (debug_bfd); |
2ca7691a TG |
4845 | return FALSE; |
4846 | } | |
93ee1e36 AM |
4847 | |
4848 | symbols = bfd_get_outsymbols (debug_bfd); | |
99b06c60 | 4849 | stash->f.syms = symbols; |
1c37913d | 4850 | stash->close_on_cleanup = TRUE; |
2ca7691a | 4851 | } |
99b06c60 | 4852 | stash->f.bfd_ptr = debug_bfd; |
2ca7691a | 4853 | |
93ee1e36 AM |
4854 | if (do_place |
4855 | && !place_sections (abfd, stash)) | |
4856 | return FALSE; | |
4857 | ||
2ca7691a TG |
4858 | /* There can be more than one DWARF2 info section in a BFD these |
4859 | days. First handle the easy case when there's only one. If | |
4860 | there's more than one, try case two: none of the sections is | |
4861 | compressed. In that case, read them all in and produce one | |
4862 | large stash. We do this in two passes - in the first pass we | |
4863 | just accumulate the section sizes, and in the second pass we | |
4864 | read in the section's contents. (The allows us to avoid | |
4865 | reallocing the data as we add sections to the stash.) If | |
4866 | some or all sections are compressed, then do things the slow | |
4867 | way, with a bunch of reallocs. */ | |
4868 | ||
4869 | if (! find_debug_info (debug_bfd, debug_sections, msec)) | |
4870 | { | |
4871 | /* Case 1: only one info section. */ | |
4872 | total_size = msec->size; | |
4873 | if (! read_section (debug_bfd, &stash->debug_sections[debug_info], | |
4874 | symbols, 0, | |
99b06c60 | 4875 | &stash->f.dwarf_info_buffer, &total_size)) |
2ca7691a TG |
4876 | return FALSE; |
4877 | } | |
4878 | else | |
4879 | { | |
4880 | /* Case 2: multiple sections. */ | |
4881 | for (total_size = 0; | |
4882 | msec; | |
4883 | msec = find_debug_info (debug_bfd, debug_sections, msec)) | |
336bfbeb AM |
4884 | { |
4885 | /* Catch PR25070 testcase overflowing size calculation here. */ | |
4886 | if (total_size + msec->size < total_size | |
4887 | || total_size + msec->size < msec->size) | |
4888 | { | |
4889 | bfd_set_error (bfd_error_no_memory); | |
4890 | return FALSE; | |
4891 | } | |
4892 | total_size += msec->size; | |
4893 | } | |
2ca7691a | 4894 | |
99b06c60 AM |
4895 | stash->f.dwarf_info_buffer = (bfd_byte *) bfd_malloc (total_size); |
4896 | if (stash->f.dwarf_info_buffer == NULL) | |
2ca7691a TG |
4897 | return FALSE; |
4898 | ||
4899 | total_size = 0; | |
4900 | for (msec = find_debug_info (debug_bfd, debug_sections, NULL); | |
4901 | msec; | |
4902 | msec = find_debug_info (debug_bfd, debug_sections, msec)) | |
4903 | { | |
4904 | bfd_size_type size; | |
4905 | ||
4906 | size = msec->size; | |
4907 | if (size == 0) | |
4908 | continue; | |
4909 | ||
4910 | if (!(bfd_simple_get_relocated_section_contents | |
99b06c60 | 4911 | (debug_bfd, msec, stash->f.dwarf_info_buffer + total_size, |
2ca7691a TG |
4912 | symbols))) |
4913 | return FALSE; | |
4914 | ||
4915 | total_size += size; | |
4916 | } | |
4917 | } | |
4918 | ||
99b06c60 AM |
4919 | stash->f.info_ptr = stash->f.dwarf_info_buffer; |
4920 | stash->f.dwarf_info_size = total_size; | |
2ca7691a TG |
4921 | return TRUE; |
4922 | } | |
4923 | ||
99b06c60 | 4924 | /* Parse the next DWARF2 compilation unit at FILE->INFO_PTR. */ |
dfc19da6 AM |
4925 | |
4926 | static struct comp_unit * | |
99b06c60 | 4927 | stash_comp_unit (struct dwarf2_debug *stash, struct dwarf2_debug_file *file) |
dfc19da6 AM |
4928 | { |
4929 | bfd_size_type length; | |
4930 | unsigned int offset_size; | |
99b06c60 AM |
4931 | bfd_byte *info_ptr_unit = file->info_ptr; |
4932 | bfd_byte *info_ptr_end = file->dwarf_info_buffer + file->dwarf_info_size; | |
dfc19da6 | 4933 | |
99b06c60 | 4934 | if (file->info_ptr >= info_ptr_end) |
dfc19da6 AM |
4935 | return NULL; |
4936 | ||
99b06c60 | 4937 | length = read_4_bytes (file->bfd_ptr, file->info_ptr, info_ptr_end); |
dfc19da6 AM |
4938 | /* A 0xffffff length is the DWARF3 way of indicating |
4939 | we use 64-bit offsets, instead of 32-bit offsets. */ | |
4940 | if (length == 0xffffffff) | |
4941 | { | |
4942 | offset_size = 8; | |
99b06c60 AM |
4943 | length = read_8_bytes (file->bfd_ptr, file->info_ptr + 4, |
4944 | info_ptr_end); | |
4945 | file->info_ptr += 12; | |
dfc19da6 AM |
4946 | } |
4947 | /* A zero length is the IRIX way of indicating 64-bit offsets, | |
4948 | mostly because the 64-bit length will generally fit in 32 | |
4949 | bits, and the endianness helps. */ | |
4950 | else if (length == 0) | |
4951 | { | |
4952 | offset_size = 8; | |
99b06c60 AM |
4953 | length = read_4_bytes (file->bfd_ptr, file->info_ptr + 4, |
4954 | info_ptr_end); | |
4955 | file->info_ptr += 8; | |
dfc19da6 AM |
4956 | } |
4957 | /* In the absence of the hints above, we assume 32-bit DWARF2 | |
4958 | offsets even for targets with 64-bit addresses, because: | |
4959 | a) most of the time these targets will not have generated | |
4960 | more than 2Gb of debug info and so will not need 64-bit | |
4961 | offsets, | |
4962 | and | |
4963 | b) if they do use 64-bit offsets but they are not using | |
4964 | the size hints that are tested for above then they are | |
4965 | not conforming to the DWARF3 standard anyway. */ | |
4966 | else | |
4967 | { | |
4968 | offset_size = 4; | |
99b06c60 | 4969 | file->info_ptr += 4; |
dfc19da6 AM |
4970 | } |
4971 | ||
4972 | if (length != 0 | |
99b06c60 AM |
4973 | && file->info_ptr + length <= info_ptr_end |
4974 | && file->info_ptr + length > file->info_ptr) | |
dfc19da6 | 4975 | { |
99b06c60 AM |
4976 | struct comp_unit *each = parse_comp_unit (stash, file, |
4977 | file->info_ptr, length, | |
4978 | info_ptr_unit, offset_size); | |
dfc19da6 AM |
4979 | if (each) |
4980 | { | |
99b06c60 AM |
4981 | if (file->all_comp_units) |
4982 | file->all_comp_units->prev_unit = each; | |
dfc19da6 | 4983 | else |
99b06c60 | 4984 | file->last_comp_unit = each; |
dfc19da6 | 4985 | |
99b06c60 AM |
4986 | each->next_unit = file->all_comp_units; |
4987 | file->all_comp_units = each; | |
dfc19da6 | 4988 | |
99b06c60 | 4989 | file->info_ptr += length; |
dfc19da6 AM |
4990 | return each; |
4991 | } | |
4992 | } | |
4993 | ||
4994 | /* Don't trust any of the DWARF info after a corrupted length or | |
4995 | parse error. */ | |
99b06c60 | 4996 | file->info_ptr = info_ptr_end; |
dfc19da6 AM |
4997 | return NULL; |
4998 | } | |
4999 | ||
3eb185c9 TT |
5000 | /* Hash function for an asymbol. */ |
5001 | ||
5002 | static hashval_t | |
5003 | hash_asymbol (const void *sym) | |
5004 | { | |
5005 | const asymbol *asym = sym; | |
5006 | return htab_hash_string (asym->name); | |
5007 | } | |
5008 | ||
5009 | /* Equality function for asymbols. */ | |
5010 | ||
5011 | static int | |
5012 | eq_asymbol (const void *a, const void *b) | |
5013 | { | |
5014 | const asymbol *sa = a; | |
5015 | const asymbol *sb = b; | |
5016 | return strcmp (sa->name, sb->name) == 0; | |
5017 | } | |
5018 | ||
425bd9e1 NC |
5019 | /* Scan the debug information in PINFO looking for a DW_TAG_subprogram |
5020 | abbrev with a DW_AT_low_pc attached to it. Then lookup that same | |
5021 | symbol in SYMBOLS and return the difference between the low_pc and | |
5022 | the symbol's address. Returns 0 if no suitable symbol could be found. */ | |
5023 | ||
5024 | bfd_signed_vma | |
5025 | _bfd_dwarf2_find_symbol_bias (asymbol ** symbols, void ** pinfo) | |
5026 | { | |
5027 | struct dwarf2_debug *stash; | |
5028 | struct comp_unit * unit; | |
3eb185c9 TT |
5029 | htab_t sym_hash; |
5030 | bfd_signed_vma result = 0; | |
5031 | asymbol ** psym; | |
425bd9e1 NC |
5032 | |
5033 | stash = (struct dwarf2_debug *) *pinfo; | |
5034 | ||
219d6836 | 5035 | if (stash == NULL || symbols == NULL) |
425bd9e1 NC |
5036 | return 0; |
5037 | ||
3eb185c9 TT |
5038 | sym_hash = htab_create_alloc (10, hash_asymbol, eq_asymbol, |
5039 | NULL, xcalloc, free); | |
5040 | for (psym = symbols; * psym != NULL; psym++) | |
5041 | { | |
5042 | asymbol * sym = * psym; | |
5043 | ||
5044 | if (sym->flags & BSF_FUNCTION && sym->section != NULL) | |
5045 | { | |
5046 | void **slot = htab_find_slot (sym_hash, sym, INSERT); | |
5047 | *slot = sym; | |
5048 | } | |
5049 | } | |
5050 | ||
99b06c60 | 5051 | for (unit = stash->f.all_comp_units; unit; unit = unit->next_unit) |
425bd9e1 NC |
5052 | { |
5053 | struct funcinfo * func; | |
5054 | ||
99b06c60 | 5055 | comp_unit_maybe_decode_line_info (unit); |
425bd9e1 NC |
5056 | |
5057 | for (func = unit->function_table; func != NULL; func = func->prev_func) | |
5058 | if (func->name && func->arange.low) | |
5059 | { | |
3eb185c9 | 5060 | asymbol search, *sym; |
425bd9e1 NC |
5061 | |
5062 | /* FIXME: Do we need to scan the aranges looking for the lowest pc value ? */ | |
5063 | ||
3eb185c9 TT |
5064 | search.name = func->name; |
5065 | sym = htab_find (sym_hash, &search); | |
5066 | if (sym != NULL) | |
425bd9e1 | 5067 | { |
3eb185c9 TT |
5068 | result = ((bfd_signed_vma) func->arange.low) - |
5069 | ((bfd_signed_vma) (sym->value + sym->section->vma)); | |
5070 | goto done; | |
425bd9e1 NC |
5071 | } |
5072 | } | |
5073 | } | |
5074 | ||
3eb185c9 TT |
5075 | done: |
5076 | htab_delete (sym_hash); | |
5077 | return result; | |
425bd9e1 NC |
5078 | } |
5079 | ||
bec42b15 NC |
5080 | /* Find the source code location of SYMBOL. If SYMBOL is NULL |
5081 | then find the nearest source code location corresponding to | |
5082 | the address SECTION + OFFSET. | |
7f3bf384 | 5083 | Returns 1 if the line is found without error and fills in |
bec42b15 NC |
5084 | FILENAME_PTR and LINENUMBER_PTR. In the case where SYMBOL was |
5085 | NULL the FUNCTIONNAME_PTR is also filled in. | |
7f3bf384 AM |
5086 | Returns 2 if partial information from _bfd_elf_find_function is |
5087 | returned (function and maybe file) by looking at symbols. DWARF2 | |
5088 | info is present but not regarding the requested code location. | |
5089 | Returns 0 otherwise. | |
bec42b15 | 5090 | SYMBOLS contains the symbol table for ABFD. |
2247a609 | 5091 | DEBUG_SECTIONS contains the name of the dwarf debug sections. */ |
252b5132 | 5092 | |
7f3bf384 | 5093 | int |
fb167eb2 AM |
5094 | _bfd_dwarf2_find_nearest_line (bfd *abfd, |
5095 | asymbol **symbols, | |
5096 | asymbol *symbol, | |
5097 | asection *section, | |
5098 | bfd_vma offset, | |
5099 | const char **filename_ptr, | |
5100 | const char **functionname_ptr, | |
5101 | unsigned int *linenumber_ptr, | |
5102 | unsigned int *discriminator_ptr, | |
5103 | const struct dwarf_debug_section *debug_sections, | |
fb167eb2 | 5104 | void **pinfo) |
252b5132 RH |
5105 | { |
5106 | /* Read each compilation unit from the section .debug_info, and check | |
5107 | to see if it contains the address we are searching for. If yes, | |
5108 | lookup the address, and return the line number info. If no, go | |
98591c73 | 5109 | on to the next compilation unit. |
252b5132 RH |
5110 | |
5111 | We keep a list of all the previously read compilation units, and | |
98591c73 | 5112 | a pointer to the next un-read compilation unit. Check the |
a092b084 | 5113 | previously read units before reading more. */ |
1ba54ee0 | 5114 | struct dwarf2_debug *stash; |
a092b084 | 5115 | /* What address are we looking for? */ |
1ba54ee0 | 5116 | bfd_vma addr; |
252b5132 | 5117 | struct comp_unit* each; |
e00e8198 | 5118 | struct funcinfo *function = NULL; |
7f3bf384 | 5119 | int found = FALSE; |
bec42b15 | 5120 | bfd_boolean do_line; |
d4c32a81 | 5121 | |
2ca7691a TG |
5122 | *filename_ptr = NULL; |
5123 | if (functionname_ptr != NULL) | |
5124 | *functionname_ptr = NULL; | |
5125 | *linenumber_ptr = 0; | |
f725daa8 CC |
5126 | if (discriminator_ptr) |
5127 | *discriminator_ptr = 0; | |
d4c32a81 | 5128 | |
93ee1e36 AM |
5129 | if (! _bfd_dwarf2_slurp_debug_info (abfd, NULL, debug_sections, |
5130 | symbols, pinfo, | |
5131 | (abfd->flags & (EXEC_P | DYNAMIC)) == 0)) | |
2ca7691a | 5132 | return FALSE; |
d4c32a81 | 5133 | |
2ca7691a | 5134 | stash = (struct dwarf2_debug *) *pinfo; |
d4c32a81 | 5135 | |
fb167eb2 | 5136 | do_line = symbol != NULL; |
bec42b15 NC |
5137 | if (do_line) |
5138 | { | |
fb167eb2 | 5139 | BFD_ASSERT (section == NULL && offset == 0 && functionname_ptr == NULL); |
e6f7f6d1 | 5140 | section = bfd_asymbol_section (symbol); |
fb167eb2 | 5141 | addr = symbol->value; |
bec42b15 | 5142 | } |
bec42b15 | 5143 | else |
fb167eb2 AM |
5144 | { |
5145 | BFD_ASSERT (section != NULL && functionname_ptr != NULL); | |
5146 | addr = offset; | |
3239a423 AB |
5147 | |
5148 | /* If we have no SYMBOL but the section we're looking at is not a | |
07d6d2b8 AM |
5149 | code section, then take a look through the list of symbols to see |
5150 | if we have a symbol at the address we're looking for. If we do | |
5151 | then use this to look up line information. This will allow us to | |
5152 | give file and line results for data symbols. We exclude code | |
5153 | symbols here, if we look up a function symbol and then look up the | |
5154 | line information we'll actually return the line number for the | |
5155 | opening '{' rather than the function definition line. This is | |
5156 | because looking up by symbol uses the line table, in which the | |
5157 | first line for a function is usually the opening '{', while | |
5158 | looking up the function by section + offset uses the | |
5159 | DW_AT_decl_line from the function DW_TAG_subprogram for the line, | |
5160 | which will be the line of the function name. */ | |
97e83a10 | 5161 | if (symbols != NULL && (section->flags & SEC_CODE) == 0) |
3239a423 AB |
5162 | { |
5163 | asymbol **tmp; | |
5164 | ||
5165 | for (tmp = symbols; (*tmp) != NULL; ++tmp) | |
5166 | if ((*tmp)->the_bfd == abfd | |
5167 | && (*tmp)->section == section | |
5168 | && (*tmp)->value == offset | |
5169 | && ((*tmp)->flags & BSF_SECTION_SYM) == 0) | |
5170 | { | |
5171 | symbol = *tmp; | |
5172 | do_line = TRUE; | |
07d6d2b8 AM |
5173 | /* For local symbols, keep going in the hope we find a |
5174 | global. */ | |
5175 | if ((symbol->flags & BSF_GLOBAL) != 0) | |
5176 | break; | |
3239a423 AB |
5177 | } |
5178 | } | |
fb167eb2 | 5179 | } |
bec42b15 | 5180 | |
1ba54ee0 | 5181 | if (section->output_section) |
6dd55cb7 | 5182 | addr += section->output_section->vma + section->output_offset; |
1ba54ee0 | 5183 | else |
6dd55cb7 | 5184 | addr += section->vma; |
a092b084 | 5185 | |
98591c73 | 5186 | /* A null info_ptr indicates that there is no dwarf2 info |
a092b084 | 5187 | (or that an error occured while setting up the stash). */ |
99b06c60 | 5188 | if (! stash->f.info_ptr) |
2ca7691a | 5189 | return FALSE; |
252b5132 | 5190 | |
4ab527b0 FF |
5191 | stash->inliner_chain = NULL; |
5192 | ||
a092b084 | 5193 | /* Check the previously read comp. units first. */ |
bd210d54 NC |
5194 | if (do_line) |
5195 | { | |
5196 | /* The info hash tables use quite a bit of memory. We may not want to | |
5197 | always use them. We use some heuristics to decide if and when to | |
5198 | turn it on. */ | |
5199 | if (stash->info_hash_status == STASH_INFO_HASH_OFF) | |
5200 | stash_maybe_enable_info_hash_tables (abfd, stash); | |
5201 | ||
5202 | /* Keep info hash table up to date if they are available. Note that we | |
089e3718 | 5203 | may disable the hash tables if there is any error duing update. */ |
bd210d54 NC |
5204 | if (stash->info_hash_status == STASH_INFO_HASH_ON) |
5205 | stash_maybe_update_info_hash_tables (stash); | |
5206 | ||
5207 | if (stash->info_hash_status == STASH_INFO_HASH_ON) | |
5208 | { | |
5209 | found = stash_find_line_fast (stash, symbol, addr, filename_ptr, | |
5210 | linenumber_ptr); | |
5211 | if (found) | |
5212 | goto done; | |
5213 | } | |
0d161102 | 5214 | else |
bd210d54 NC |
5215 | { |
5216 | /* Check the previously read comp. units first. */ | |
99b06c60 | 5217 | for (each = stash->f.all_comp_units; each; each = each->next_unit) |
bd210d54 | 5218 | if ((symbol->flags & BSF_FUNCTION) == 0 |
a2a50954 | 5219 | || each->arange.high == 0 |
bd210d54 NC |
5220 | || comp_unit_contains_address (each, addr)) |
5221 | { | |
5222 | found = comp_unit_find_line (each, symbol, addr, filename_ptr, | |
99b06c60 | 5223 | linenumber_ptr); |
bd210d54 NC |
5224 | if (found) |
5225 | goto done; | |
5226 | } | |
5227 | } | |
5228 | } | |
5229 | else | |
5230 | { | |
240d6706 NC |
5231 | bfd_vma min_range = (bfd_vma) -1; |
5232 | const char * local_filename = NULL; | |
e00e8198 | 5233 | struct funcinfo *local_function = NULL; |
240d6706 NC |
5234 | unsigned int local_linenumber = 0; |
5235 | unsigned int local_discriminator = 0; | |
96691246 | 5236 | |
99b06c60 | 5237 | for (each = stash->f.all_comp_units; each; each = each->next_unit) |
709d67f1 | 5238 | { |
240d6706 NC |
5239 | bfd_vma range = (bfd_vma) -1; |
5240 | ||
a2a50954 AM |
5241 | found = ((each->arange.high == 0 |
5242 | || comp_unit_contains_address (each, addr)) | |
99b06c60 AM |
5243 | && (range = (comp_unit_find_nearest_line |
5244 | (each, addr, &local_filename, | |
5245 | &local_function, &local_linenumber, | |
5246 | &local_discriminator))) != 0); | |
709d67f1 | 5247 | if (found) |
240d6706 NC |
5248 | { |
5249 | /* PRs 15935 15994: Bogus debug information may have provided us | |
5250 | with an erroneous match. We attempt to counter this by | |
5251 | selecting the match that has the smallest address range | |
5252 | associated with it. (We are assuming that corrupt debug info | |
5253 | will tend to result in extra large address ranges rather than | |
5254 | extra small ranges). | |
5255 | ||
5256 | This does mean that we scan through all of the CUs associated | |
5257 | with the bfd each time this function is called. But this does | |
5258 | have the benefit of producing consistent results every time the | |
5259 | function is called. */ | |
5260 | if (range <= min_range) | |
5261 | { | |
5262 | if (filename_ptr && local_filename) | |
5263 | * filename_ptr = local_filename; | |
e00e8198 AM |
5264 | if (local_function) |
5265 | function = local_function; | |
240d6706 NC |
5266 | if (discriminator_ptr && local_discriminator) |
5267 | * discriminator_ptr = local_discriminator; | |
5268 | if (local_linenumber) | |
5269 | * linenumber_ptr = local_linenumber; | |
5270 | min_range = range; | |
5271 | } | |
5272 | } | |
5273 | } | |
5274 | ||
5275 | if (* linenumber_ptr) | |
5276 | { | |
5277 | found = TRUE; | |
5278 | goto done; | |
709d67f1 | 5279 | } |
5420f73d L |
5280 | } |
5281 | ||
5420f73d | 5282 | /* Read each remaining comp. units checking each as they are read. */ |
99b06c60 | 5283 | while ((each = stash_comp_unit (stash, &stash->f)) != NULL) |
5420f73d | 5284 | { |
dfc19da6 AM |
5285 | /* DW_AT_low_pc and DW_AT_high_pc are optional for |
5286 | compilation units. If we don't have them (i.e., | |
5287 | unit->high == 0), we need to consult the line info table | |
5288 | to see if a compilation unit contains the given | |
5289 | address. */ | |
5290 | if (do_line) | |
5291 | found = (((symbol->flags & BSF_FUNCTION) == 0 | |
5292 | || each->arange.high == 0 | |
5293 | || comp_unit_contains_address (each, addr)) | |
5294 | && comp_unit_find_line (each, symbol, addr, | |
99b06c60 | 5295 | filename_ptr, linenumber_ptr)); |
9defd221 | 5296 | else |
dfc19da6 AM |
5297 | found = ((each->arange.high == 0 |
5298 | || comp_unit_contains_address (each, addr)) | |
5299 | && comp_unit_find_nearest_line (each, addr, | |
5300 | filename_ptr, | |
5301 | &function, | |
5302 | linenumber_ptr, | |
99b06c60 | 5303 | discriminator_ptr) != 0); |
dfc19da6 AM |
5304 | |
5305 | if (found) | |
5306 | break; | |
5420f73d L |
5307 | } |
5308 | ||
a2a50954 | 5309 | done: |
e7679060 AM |
5310 | if (functionname_ptr && function && function->is_linkage) |
5311 | *functionname_ptr = function->name; | |
5312 | else if (functionname_ptr | |
7f3bf384 | 5313 | && (!*functionname_ptr |
e7679060 | 5314 | || (function && !function->is_linkage))) |
e00e8198 | 5315 | { |
e7679060 AM |
5316 | asymbol *fun; |
5317 | asymbol **syms = symbols; | |
5318 | asection *sec = section; | |
5319 | ||
7f3bf384 | 5320 | _bfd_dwarf2_stash_syms (stash, abfd, &sec, &syms); |
e7679060 AM |
5321 | fun = _bfd_elf_find_function (abfd, syms, sec, offset, |
5322 | *filename_ptr ? NULL : filename_ptr, | |
5323 | functionname_ptr); | |
5324 | ||
7f3bf384 AM |
5325 | if (!found && fun != NULL) |
5326 | found = 2; | |
5327 | ||
e7679060 | 5328 | if (function && !function->is_linkage) |
e00e8198 | 5329 | { |
923b198a AM |
5330 | bfd_vma sec_vma; |
5331 | ||
923b198a AM |
5332 | sec_vma = section->vma; |
5333 | if (section->output_section != NULL) | |
5334 | sec_vma = section->output_section->vma + section->output_offset; | |
5335 | if (fun != NULL | |
5336 | && fun->value + sec_vma == function->arange.low) | |
5337 | function->name = *functionname_ptr; | |
5338 | /* Even if we didn't find a linkage name, say that we have | |
5339 | to stop a repeated search of symbols. */ | |
e00e8198 AM |
5340 | function->is_linkage = TRUE; |
5341 | } | |
e00e8198 | 5342 | } |
e7679060 | 5343 | |
d4c32a81 L |
5344 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
5345 | unset_sections (stash); | |
5346 | ||
5347 | return found; | |
5420f73d L |
5348 | } |
5349 | ||
4ab527b0 FF |
5350 | bfd_boolean |
5351 | _bfd_dwarf2_find_inliner_info (bfd *abfd ATTRIBUTE_UNUSED, | |
5352 | const char **filename_ptr, | |
5353 | const char **functionname_ptr, | |
5354 | unsigned int *linenumber_ptr, | |
5355 | void **pinfo) | |
5356 | { | |
5357 | struct dwarf2_debug *stash; | |
5358 | ||
a50b1753 | 5359 | stash = (struct dwarf2_debug *) *pinfo; |
4ab527b0 FF |
5360 | if (stash) |
5361 | { | |
5362 | struct funcinfo *func = stash->inliner_chain; | |
bec42b15 | 5363 | |
4ab527b0 FF |
5364 | if (func && func->caller_func) |
5365 | { | |
5366 | *filename_ptr = func->caller_file; | |
5367 | *functionname_ptr = func->caller_func->name; | |
5368 | *linenumber_ptr = func->caller_line; | |
5369 | stash->inliner_chain = func->caller_func; | |
bec42b15 | 5370 | return TRUE; |
4ab527b0 FF |
5371 | } |
5372 | } | |
5373 | ||
bec42b15 | 5374 | return FALSE; |
4ab527b0 FF |
5375 | } |
5376 | ||
35330cce | 5377 | void |
d9071b0c | 5378 | _bfd_dwarf2_cleanup_debug_info (bfd *abfd, void **pinfo) |
35330cce | 5379 | { |
5bb3703f | 5380 | struct dwarf2_debug *stash = (struct dwarf2_debug *) *pinfo; |
35330cce | 5381 | struct comp_unit *each; |
99b06c60 | 5382 | struct dwarf2_debug_file *file; |
35330cce | 5383 | |
d9071b0c | 5384 | if (abfd == NULL || stash == NULL) |
35330cce NC |
5385 | return; |
5386 | ||
99b06c60 AM |
5387 | if (stash->varinfo_hash_table) |
5388 | bfd_hash_table_free (&stash->varinfo_hash_table->base); | |
5389 | if (stash->funcinfo_hash_table) | |
5390 | bfd_hash_table_free (&stash->funcinfo_hash_table->base); | |
35330cce | 5391 | |
99b06c60 AM |
5392 | file = &stash->f; |
5393 | while (1) | |
5394 | { | |
5395 | for (each = file->all_comp_units; each; each = each->next_unit) | |
d8d1c398 | 5396 | { |
99b06c60 AM |
5397 | struct funcinfo *function_table = each->function_table; |
5398 | struct varinfo *variable_table = each->variable_table; | |
90b5b1a5 | 5399 | |
e63ef095 | 5400 | if (each->line_table && each->line_table != file->line_table) |
90b5b1a5 | 5401 | { |
99b06c60 AM |
5402 | free (each->line_table->files); |
5403 | free (each->line_table->dirs); | |
90b5b1a5 NC |
5404 | } |
5405 | ||
c9594989 AM |
5406 | free (each->lookup_funcinfo_table); |
5407 | each->lookup_funcinfo_table = NULL; | |
089e3718 | 5408 | |
99b06c60 | 5409 | while (function_table) |
90b5b1a5 | 5410 | { |
c9594989 AM |
5411 | free (function_table->file); |
5412 | function_table->file = NULL; | |
5413 | free (function_table->caller_file); | |
5414 | function_table->caller_file = NULL; | |
99b06c60 | 5415 | function_table = function_table->prev_func; |
90b5b1a5 NC |
5416 | } |
5417 | ||
99b06c60 AM |
5418 | while (variable_table) |
5419 | { | |
c9594989 AM |
5420 | free (variable_table->file); |
5421 | variable_table->file = NULL; | |
99b06c60 AM |
5422 | variable_table = variable_table->prev_var; |
5423 | } | |
90b5b1a5 | 5424 | } |
35330cce | 5425 | |
e63ef095 AM |
5426 | if (file->line_table) |
5427 | { | |
5428 | free (file->line_table->files); | |
5429 | free (file->line_table->dirs); | |
5430 | } | |
5431 | htab_delete (file->abbrev_offsets); | |
5432 | ||
99b06c60 AM |
5433 | free (file->dwarf_line_str_buffer); |
5434 | free (file->dwarf_str_buffer); | |
5435 | free (file->dwarf_ranges_buffer); | |
5436 | free (file->dwarf_line_buffer); | |
5437 | free (file->dwarf_abbrev_buffer); | |
5438 | free (file->dwarf_info_buffer); | |
5439 | if (file == &stash->alt) | |
5440 | break; | |
5441 | file = &stash->alt; | |
5442 | } | |
5443 | free (stash->sec_vma); | |
5444 | free (stash->adjusted_sections); | |
1c37913d | 5445 | if (stash->close_on_cleanup) |
99b06c60 AM |
5446 | bfd_close (stash->f.bfd_ptr); |
5447 | if (stash->alt.bfd_ptr) | |
5448 | bfd_close (stash->alt.bfd_ptr); | |
35330cce | 5449 | } |
e00e8198 AM |
5450 | |
5451 | /* Find the function to a particular section and offset, | |
5452 | for error reporting. */ | |
5453 | ||
923b198a | 5454 | asymbol * |
e00e8198 AM |
5455 | _bfd_elf_find_function (bfd *abfd, |
5456 | asymbol **symbols, | |
5457 | asection *section, | |
5458 | bfd_vma offset, | |
5459 | const char **filename_ptr, | |
5460 | const char **functionname_ptr) | |
5461 | { | |
5462 | struct elf_find_function_cache | |
5463 | { | |
5464 | asection *last_section; | |
5465 | asymbol *func; | |
5466 | const char *filename; | |
5467 | bfd_size_type func_size; | |
5468 | } *cache; | |
5469 | ||
5470 | if (symbols == NULL) | |
923b198a | 5471 | return NULL; |
e00e8198 AM |
5472 | |
5473 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) | |
923b198a | 5474 | return NULL; |
e00e8198 AM |
5475 | |
5476 | cache = elf_tdata (abfd)->elf_find_function_cache; | |
5477 | if (cache == NULL) | |
5478 | { | |
5479 | cache = bfd_zalloc (abfd, sizeof (*cache)); | |
5480 | elf_tdata (abfd)->elf_find_function_cache = cache; | |
5481 | if (cache == NULL) | |
923b198a | 5482 | return NULL; |
e00e8198 AM |
5483 | } |
5484 | if (cache->last_section != section | |
5485 | || cache->func == NULL | |
5486 | || offset < cache->func->value | |
5487 | || offset >= cache->func->value + cache->func_size) | |
5488 | { | |
5489 | asymbol *file; | |
5490 | bfd_vma low_func; | |
5491 | asymbol **p; | |
5492 | /* ??? Given multiple file symbols, it is impossible to reliably | |
5493 | choose the right file name for global symbols. File symbols are | |
5494 | local symbols, and thus all file symbols must sort before any | |
5495 | global symbols. The ELF spec may be interpreted to say that a | |
5496 | file symbol must sort before other local symbols, but currently | |
5497 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
5498 | make a better choice of file name for local symbols by ignoring | |
5499 | file symbols appearing after a given local symbol. */ | |
5500 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
5501 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
5502 | ||
5503 | file = NULL; | |
5504 | low_func = 0; | |
5505 | state = nothing_seen; | |
5506 | cache->filename = NULL; | |
5507 | cache->func = NULL; | |
5508 | cache->func_size = 0; | |
5509 | cache->last_section = section; | |
5510 | ||
5511 | for (p = symbols; *p != NULL; p++) | |
5512 | { | |
5513 | asymbol *sym = *p; | |
5514 | bfd_vma code_off; | |
5515 | bfd_size_type size; | |
5516 | ||
5517 | if ((sym->flags & BSF_FILE) != 0) | |
5518 | { | |
5519 | file = sym; | |
5520 | if (state == symbol_seen) | |
5521 | state = file_after_symbol_seen; | |
5522 | continue; | |
5523 | } | |
5524 | ||
5525 | size = bed->maybe_function_sym (sym, section, &code_off); | |
5526 | if (size != 0 | |
5527 | && code_off <= offset | |
5528 | && (code_off > low_func | |
5529 | || (code_off == low_func | |
5530 | && size > cache->func_size))) | |
5531 | { | |
5532 | cache->func = sym; | |
5533 | cache->func_size = size; | |
5534 | cache->filename = NULL; | |
5535 | low_func = code_off; | |
5536 | if (file != NULL | |
5537 | && ((sym->flags & BSF_LOCAL) != 0 | |
5538 | || state != file_after_symbol_seen)) | |
5539 | cache->filename = bfd_asymbol_name (file); | |
5540 | } | |
5541 | if (state == nothing_seen) | |
5542 | state = symbol_seen; | |
5543 | } | |
5544 | } | |
5545 | ||
5546 | if (cache->func == NULL) | |
923b198a | 5547 | return NULL; |
e00e8198 AM |
5548 | |
5549 | if (filename_ptr) | |
5550 | *filename_ptr = cache->filename; | |
5551 | if (functionname_ptr) | |
5552 | *functionname_ptr = bfd_asymbol_name (cache->func); | |
5553 | ||
923b198a | 5554 | return cache->func; |
e00e8198 | 5555 | } |