Commit | Line | Data |
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252b5132 | 1 | /* DWARF 2 support. |
b3adc24a | 2 | Copyright (C) 1994-2020 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 | |
99b06c60 AM |
133 | /* A list of all previously read comp_units. */ |
134 | struct comp_unit *all_comp_units; | |
135 | ||
136 | /* Last comp unit in list above. */ | |
137 | struct comp_unit *last_comp_unit; | |
e63ef095 AM |
138 | |
139 | /* Line table at line_offset zero. */ | |
140 | struct line_info_table *line_table; | |
141 | ||
142 | /* Hash table to map offsets to decoded abbrevs. */ | |
143 | htab_t abbrev_offsets; | |
99b06c60 AM |
144 | }; |
145 | ||
146 | struct dwarf2_debug | |
147 | { | |
148 | /* Names of the debug sections. */ | |
149 | const struct dwarf_debug_section *debug_sections; | |
150 | ||
151 | /* Per-file stuff. */ | |
152 | struct dwarf2_debug_file f, alt; | |
153 | ||
154 | /* Pointer to the original bfd for which debug was loaded. This is what | |
155 | we use to compare and so check that the cached debug data is still | |
156 | valid - it saves having to possibly dereference the gnu_debuglink each | |
157 | time. */ | |
158 | bfd *orig_bfd; | |
159 | ||
4ab527b0 FF |
160 | /* If the most recent call to bfd_find_nearest_line was given an |
161 | address in an inlined function, preserve a pointer into the | |
162 | calling chain for subsequent calls to bfd_find_inliner_info to | |
089e3718 | 163 | use. */ |
4ab527b0 | 164 | struct funcinfo *inliner_chain; |
d4c32a81 | 165 | |
cd0449ab AM |
166 | /* Section VMAs at the time the stash was built. */ |
167 | bfd_vma *sec_vma; | |
d7f848c3 NC |
168 | /* Number of sections in the SEC_VMA table. */ |
169 | unsigned int sec_vma_count; | |
cd0449ab | 170 | |
5609a71e | 171 | /* Number of sections whose VMA we must adjust. */ |
93ee1e36 | 172 | int adjusted_section_count; |
d4c32a81 | 173 | |
5609a71e DJ |
174 | /* Array of sections with adjusted VMA. */ |
175 | struct adjusted_section *adjusted_sections; | |
bd210d54 NC |
176 | |
177 | /* Number of times find_line is called. This is used in | |
178 | the heuristic for enabling the info hash tables. */ | |
179 | int info_hash_count; | |
180 | ||
181 | #define STASH_INFO_HASH_TRIGGER 100 | |
182 | ||
183 | /* Hash table mapping symbol names to function infos. */ | |
184 | struct info_hash_table *funcinfo_hash_table; | |
185 | ||
186 | /* Hash table mapping symbol names to variable infos. */ | |
187 | struct info_hash_table *varinfo_hash_table; | |
188 | ||
189 | /* Head of comp_unit list in the last hash table update. */ | |
190 | struct comp_unit *hash_units_head; | |
191 | ||
192 | /* Status of info hash. */ | |
193 | int info_hash_status; | |
07d6d2b8 AM |
194 | #define STASH_INFO_HASH_OFF 0 |
195 | #define STASH_INFO_HASH_ON 1 | |
bd210d54 | 196 | #define STASH_INFO_HASH_DISABLED 2 |
1c37913d AM |
197 | |
198 | /* True if we opened bfd_ptr. */ | |
199 | bfd_boolean close_on_cleanup; | |
252b5132 RH |
200 | }; |
201 | ||
a092b084 NC |
202 | struct arange |
203 | { | |
f623be2b RH |
204 | struct arange *next; |
205 | bfd_vma low; | |
206 | bfd_vma high; | |
207 | }; | |
252b5132 | 208 | |
252b5132 | 209 | /* A minimal decoding of DWARF2 compilation units. We only decode |
a092b084 | 210 | what's needed to get to the line number information. */ |
252b5132 | 211 | |
a092b084 NC |
212 | struct comp_unit |
213 | { | |
214 | /* Chain the previously read compilation units. */ | |
f075ee0c | 215 | struct comp_unit *next_unit; |
252b5132 | 216 | |
bd210d54 NC |
217 | /* Likewise, chain the compilation unit read after this one. |
218 | The comp units are stored in reversed reading order. */ | |
219 | struct comp_unit *prev_unit; | |
220 | ||
2ae727ad | 221 | /* Keep the bfd convenient (for memory allocation). */ |
f075ee0c | 222 | bfd *abfd; |
252b5132 | 223 | |
709d67f1 AM |
224 | /* The lowest and highest addresses contained in this compilation |
225 | unit as specified in the compilation unit header. */ | |
226 | struct arange arange; | |
252b5132 | 227 | |
a092b084 | 228 | /* The DW_AT_name attribute (for error messages). */ |
f075ee0c | 229 | char *name; |
252b5132 | 230 | |
a092b084 | 231 | /* The abbrev hash table. */ |
f075ee0c | 232 | struct abbrev_info **abbrevs; |
252b5132 | 233 | |
e00e8198 AM |
234 | /* DW_AT_language. */ |
235 | int lang; | |
236 | ||
a092b084 | 237 | /* Note that an error was found by comp_unit_find_nearest_line. */ |
252b5132 RH |
238 | int error; |
239 | ||
a092b084 | 240 | /* The DW_AT_comp_dir attribute. */ |
f075ee0c | 241 | char *comp_dir; |
252b5132 | 242 | |
b34976b6 | 243 | /* TRUE if there is a line number table associated with this comp. unit. */ |
252b5132 | 244 | int stmtlist; |
98591c73 | 245 | |
c0c28ab8 L |
246 | /* Pointer to the current comp_unit so that we can find a given entry |
247 | by its reference. */ | |
f075ee0c | 248 | bfd_byte *info_ptr_unit; |
c0c28ab8 | 249 | |
a092b084 | 250 | /* The offset into .debug_line of the line number table. */ |
252b5132 RH |
251 | unsigned long line_offset; |
252 | ||
a092b084 | 253 | /* Pointer to the first child die for the comp unit. */ |
f075ee0c | 254 | bfd_byte *first_child_die_ptr; |
252b5132 | 255 | |
a092b084 | 256 | /* The end of the comp unit. */ |
f075ee0c | 257 | bfd_byte *end_ptr; |
252b5132 | 258 | |
a092b084 | 259 | /* The decoded line number, NULL if not yet decoded. */ |
f075ee0c | 260 | struct line_info_table *line_table; |
252b5132 | 261 | |
a092b084 | 262 | /* A list of the functions found in this comp. unit. */ |
f075ee0c | 263 | struct funcinfo *function_table; |
252b5132 | 264 | |
089e3718 IT |
265 | /* A table of function information references searchable by address. */ |
266 | struct lookup_funcinfo *lookup_funcinfo_table; | |
267 | ||
268 | /* Number of functions in the function_table and sorted_function_table. */ | |
269 | bfd_size_type number_of_functions; | |
270 | ||
5420f73d L |
271 | /* A list of the variables found in this comp. unit. */ |
272 | struct varinfo *variable_table; | |
273 | ||
99b06c60 | 274 | /* Pointers to dwarf2_debug structures. */ |
d03ba2a1 | 275 | struct dwarf2_debug *stash; |
99b06c60 | 276 | struct dwarf2_debug_file *file; |
d03ba2a1 | 277 | |
5609a71e DJ |
278 | /* DWARF format version for this unit - from unit header. */ |
279 | int version; | |
280 | ||
a092b084 | 281 | /* Address size for this unit - from unit header. */ |
252b5132 | 282 | unsigned char addr_size; |
d03ba2a1 JJ |
283 | |
284 | /* Offset size for this unit - from unit header. */ | |
285 | unsigned char offset_size; | |
a13afe8e FF |
286 | |
287 | /* Base address for this unit - from DW_AT_low_pc attribute of | |
288 | DW_TAG_compile_unit DIE */ | |
289 | bfd_vma base_address; | |
bd210d54 NC |
290 | |
291 | /* TRUE if symbols are cached in hash table for faster lookup by name. */ | |
292 | bfd_boolean cached; | |
252b5132 RH |
293 | }; |
294 | ||
a7b97311 AM |
295 | /* This data structure holds the information of an abbrev. */ |
296 | struct abbrev_info | |
297 | { | |
f3a08f77 NC |
298 | unsigned int number; /* Number identifying abbrev. */ |
299 | enum dwarf_tag tag; /* DWARF tag. */ | |
300 | bfd_boolean has_children; /* TRUE if the abbrev has children. */ | |
301 | unsigned int num_attrs; /* Number of attributes. */ | |
302 | struct attr_abbrev * attrs; /* An array of attribute descriptions. */ | |
303 | struct abbrev_info * next; /* Next in chain. */ | |
a7b97311 AM |
304 | }; |
305 | ||
306 | struct attr_abbrev | |
307 | { | |
308 | enum dwarf_attribute name; | |
309 | enum dwarf_form form; | |
0041f7df | 310 | bfd_vma implicit_const; |
a7b97311 AM |
311 | }; |
312 | ||
4a114e3e L |
313 | /* Map of uncompressed DWARF debug section name to compressed one. It |
314 | is terminated by NULL uncompressed_name. */ | |
315 | ||
e4c93b56 | 316 | const struct dwarf_debug_section dwarf_debug_sections[] = |
4a114e3e L |
317 | { |
318 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
319 | { ".debug_aranges", ".zdebug_aranges" }, | |
320 | { ".debug_frame", ".zdebug_frame" }, | |
321 | { ".debug_info", ".zdebug_info" }, | |
95e34fb4 | 322 | { ".debug_info", ".zdebug_info" }, |
4a114e3e L |
323 | { ".debug_line", ".zdebug_line" }, |
324 | { ".debug_loc", ".zdebug_loc" }, | |
325 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
4ccf1e31 | 326 | { ".debug_macro", ".zdebug_macro" }, |
4a114e3e L |
327 | { ".debug_pubnames", ".zdebug_pubnames" }, |
328 | { ".debug_pubtypes", ".zdebug_pubtypes" }, | |
329 | { ".debug_ranges", ".zdebug_ranges" }, | |
330 | { ".debug_static_func", ".zdebug_static_func" }, | |
331 | { ".debug_static_vars", ".zdebug_static_vars" }, | |
332 | { ".debug_str", ".zdebug_str", }, | |
95e34fb4 | 333 | { ".debug_str", ".zdebug_str", }, |
0041f7df | 334 | { ".debug_line_str", ".zdebug_line_str", }, |
4a114e3e L |
335 | { ".debug_types", ".zdebug_types" }, |
336 | /* GNU DWARF 1 extensions */ | |
337 | { ".debug_sfnames", ".zdebug_sfnames" }, | |
338 | { ".debug_srcinfo", ".zebug_srcinfo" }, | |
339 | /* SGI/MIPS DWARF 2 extensions */ | |
340 | { ".debug_funcnames", ".zdebug_funcnames" }, | |
341 | { ".debug_typenames", ".zdebug_typenames" }, | |
342 | { ".debug_varnames", ".zdebug_varnames" }, | |
343 | { ".debug_weaknames", ".zdebug_weaknames" }, | |
344 | { NULL, NULL }, | |
345 | }; | |
346 | ||
67ce483b | 347 | /* NB/ Numbers in this enum must match up with indices |
95e34fb4 | 348 | into the dwarf_debug_sections[] array above. */ |
4a114e3e L |
349 | enum dwarf_debug_section_enum |
350 | { | |
351 | debug_abbrev = 0, | |
352 | debug_aranges, | |
353 | debug_frame, | |
354 | debug_info, | |
95e34fb4 | 355 | debug_info_alt, |
4a114e3e L |
356 | debug_line, |
357 | debug_loc, | |
358 | debug_macinfo, | |
4ccf1e31 | 359 | debug_macro, |
4a114e3e L |
360 | debug_pubnames, |
361 | debug_pubtypes, | |
362 | debug_ranges, | |
363 | debug_static_func, | |
364 | debug_static_vars, | |
365 | debug_str, | |
95e34fb4 | 366 | debug_str_alt, |
0041f7df | 367 | debug_line_str, |
4a114e3e L |
368 | debug_types, |
369 | debug_sfnames, | |
370 | debug_srcinfo, | |
371 | debug_funcnames, | |
372 | debug_typenames, | |
373 | debug_varnames, | |
0041f7df JK |
374 | debug_weaknames, |
375 | debug_max | |
4a114e3e L |
376 | }; |
377 | ||
0041f7df JK |
378 | /* A static assertion. */ |
379 | extern int dwarf_debug_section_assert[ARRAY_SIZE (dwarf_debug_sections) | |
380 | == debug_max + 1 ? 1 : -1]; | |
381 | ||
a7b97311 AM |
382 | #ifndef ABBREV_HASH_SIZE |
383 | #define ABBREV_HASH_SIZE 121 | |
384 | #endif | |
385 | #ifndef ATTR_ALLOC_CHUNK | |
386 | #define ATTR_ALLOC_CHUNK 4 | |
387 | #endif | |
388 | ||
bd210d54 NC |
389 | /* Variable and function hash tables. This is used to speed up look-up |
390 | in lookup_symbol_in_var_table() and lookup_symbol_in_function_table(). | |
391 | In order to share code between variable and function infos, we use | |
392 | a list of untyped pointer for all variable/function info associated with | |
393 | a symbol. We waste a bit of memory for list with one node but that | |
394 | simplifies the code. */ | |
395 | ||
396 | struct info_list_node | |
397 | { | |
398 | struct info_list_node *next; | |
399 | void *info; | |
400 | }; | |
401 | ||
402 | /* Info hash entry. */ | |
403 | struct info_hash_entry | |
404 | { | |
405 | struct bfd_hash_entry root; | |
406 | struct info_list_node *head; | |
407 | }; | |
408 | ||
409 | struct info_hash_table | |
410 | { | |
411 | struct bfd_hash_table base; | |
412 | }; | |
413 | ||
089e3718 | 414 | /* Function to create a new entry in info hash table. */ |
bd210d54 NC |
415 | |
416 | static struct bfd_hash_entry * | |
417 | info_hash_table_newfunc (struct bfd_hash_entry *entry, | |
418 | struct bfd_hash_table *table, | |
419 | const char *string) | |
420 | { | |
421 | struct info_hash_entry *ret = (struct info_hash_entry *) entry; | |
422 | ||
423 | /* Allocate the structure if it has not already been allocated by a | |
424 | derived class. */ | |
425 | if (ret == NULL) | |
426 | { | |
a50b1753 | 427 | ret = (struct info_hash_entry *) bfd_hash_allocate (table, |
93ee1e36 | 428 | sizeof (* ret)); |
bd210d54 NC |
429 | if (ret == NULL) |
430 | return NULL; | |
431 | } | |
432 | ||
433 | /* Call the allocation method of the base class. */ | |
434 | ret = ((struct info_hash_entry *) | |
2d47a72c | 435 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); |
bd210d54 NC |
436 | |
437 | /* Initialize the local fields here. */ | |
438 | if (ret) | |
439 | ret->head = NULL; | |
440 | ||
441 | return (struct bfd_hash_entry *) ret; | |
442 | } | |
443 | ||
444 | /* Function to create a new info hash table. It returns a pointer to the | |
445 | newly created table or NULL if there is any error. We need abfd | |
446 | solely for memory allocation. */ | |
447 | ||
448 | static struct info_hash_table * | |
449 | create_info_hash_table (bfd *abfd) | |
450 | { | |
451 | struct info_hash_table *hash_table; | |
452 | ||
a2a50954 AM |
453 | hash_table = ((struct info_hash_table *) |
454 | bfd_alloc (abfd, sizeof (struct info_hash_table))); | |
bd210d54 NC |
455 | if (!hash_table) |
456 | return hash_table; | |
457 | ||
458 | if (!bfd_hash_table_init (&hash_table->base, info_hash_table_newfunc, | |
459 | sizeof (struct info_hash_entry))) | |
460 | { | |
461 | bfd_release (abfd, hash_table); | |
462 | return NULL; | |
463 | } | |
464 | ||
465 | return hash_table; | |
466 | } | |
467 | ||
468 | /* Insert an info entry into an info hash table. We do not check of | |
469 | duplicate entries. Also, the caller need to guarantee that the | |
470 | right type of info in inserted as info is passed as a void* pointer. | |
471 | This function returns true if there is no error. */ | |
472 | ||
473 | static bfd_boolean | |
474 | insert_info_hash_table (struct info_hash_table *hash_table, | |
475 | const char *key, | |
476 | void *info, | |
477 | bfd_boolean copy_p) | |
478 | { | |
479 | struct info_hash_entry *entry; | |
480 | struct info_list_node *node; | |
481 | ||
482 | entry = (struct info_hash_entry*) bfd_hash_lookup (&hash_table->base, | |
483 | key, TRUE, copy_p); | |
484 | if (!entry) | |
485 | return FALSE; | |
486 | ||
a50b1753 | 487 | node = (struct info_list_node *) bfd_hash_allocate (&hash_table->base, |
93ee1e36 | 488 | sizeof (*node)); |
bd210d54 NC |
489 | if (!node) |
490 | return FALSE; | |
491 | ||
492 | node->info = info; | |
493 | node->next = entry->head; | |
494 | entry->head = node; | |
495 | ||
496 | return TRUE; | |
497 | } | |
498 | ||
499 | /* Look up an info entry list from an info hash table. Return NULL | |
089e3718 | 500 | if there is none. */ |
bd210d54 NC |
501 | |
502 | static struct info_list_node * | |
503 | lookup_info_hash_table (struct info_hash_table *hash_table, const char *key) | |
504 | { | |
505 | struct info_hash_entry *entry; | |
506 | ||
507 | entry = (struct info_hash_entry*) bfd_hash_lookup (&hash_table->base, key, | |
508 | FALSE, FALSE); | |
509 | return entry ? entry->head : NULL; | |
510 | } | |
511 | ||
1b315056 | 512 | /* Read a section into its appropriate place in the dwarf2_debug |
dc80fd5c | 513 | struct (indicated by SECTION_BUFFER and SECTION_SIZE). If SYMS is |
1b315056 | 514 | not NULL, use bfd_simple_get_relocated_section_contents to read the |
dc80fd5c NC |
515 | section contents, otherwise use bfd_get_section_contents. Fail if |
516 | the located section does not contain at least OFFSET bytes. */ | |
1b315056 CS |
517 | |
518 | static bfd_boolean | |
07d6d2b8 | 519 | read_section (bfd * abfd, |
fc28f9aa | 520 | const struct dwarf_debug_section *sec, |
dc80fd5c NC |
521 | asymbol ** syms, |
522 | bfd_uint64_t offset, | |
523 | bfd_byte ** section_buffer, | |
524 | bfd_size_type * section_size) | |
1b315056 CS |
525 | { |
526 | asection *msec; | |
fc28f9aa | 527 | const char *section_name = sec->uncompressed_name; |
4b04bba2 | 528 | bfd_byte *contents = *section_buffer; |
30838132 | 529 | bfd_size_type amt; |
1b315056 | 530 | |
95e34fb4 | 531 | /* The section may have already been read. */ |
4b04bba2 | 532 | if (contents == NULL) |
1b315056 | 533 | { |
53638231 | 534 | msec = bfd_get_section_by_name (abfd, section_name); |
4a114e3e | 535 | if (! msec) |
53638231 | 536 | { |
fc28f9aa | 537 | section_name = sec->compressed_name; |
93ee1e36 AM |
538 | if (section_name != NULL) |
539 | msec = bfd_get_section_by_name (abfd, section_name); | |
53638231 AS |
540 | } |
541 | if (! msec) | |
2d47a72c | 542 | { |
9793eb77 | 543 | _bfd_error_handler (_("DWARF error: can't find %s section."), |
4eca0228 | 544 | sec->uncompressed_name); |
2d47a72c DJ |
545 | bfd_set_error (bfd_error_bad_value); |
546 | return FALSE; | |
547 | } | |
53638231 | 548 | |
bc664799 | 549 | *section_size = msec->rawsize ? msec->rawsize : msec->size; |
4b04bba2 AM |
550 | /* Paranoia - alloc one extra so that we can make sure a string |
551 | section is NUL terminated. */ | |
30838132 AM |
552 | amt = *section_size + 1; |
553 | if (amt == 0) | |
554 | { | |
555 | bfd_set_error (bfd_error_no_memory); | |
556 | return FALSE; | |
557 | } | |
558 | contents = (bfd_byte *) bfd_malloc (amt); | |
4b04bba2 AM |
559 | if (contents == NULL) |
560 | return FALSE; | |
561 | if (syms | |
562 | ? !bfd_simple_get_relocated_section_contents (abfd, msec, contents, | |
563 | syms) | |
564 | : !bfd_get_section_contents (abfd, msec, contents, 0, *section_size)) | |
8c2ccebd | 565 | { |
4b04bba2 AM |
566 | free (contents); |
567 | return FALSE; | |
e4f27230 | 568 | } |
4b04bba2 AM |
569 | contents[*section_size] = 0; |
570 | *section_buffer = contents; | |
1b315056 CS |
571 | } |
572 | ||
573 | /* It is possible to get a bad value for the offset into the section | |
dc80fd5c | 574 | that the client wants. Validate it here to avoid trouble later. */ |
1b315056 CS |
575 | if (offset != 0 && offset >= *section_size) |
576 | { | |
695344c0 | 577 | /* xgettext: c-format */ |
9793eb77 AM |
578 | _bfd_error_handler (_("DWARF error: offset (%" PRIu64 ")" |
579 | " greater than or equal to %s size (%" PRIu64 ")"), | |
8979927a | 580 | (uint64_t) offset, section_name, |
2dcf00ce | 581 | (uint64_t) *section_size); |
1b315056 CS |
582 | bfd_set_error (bfd_error_bad_value); |
583 | return FALSE; | |
584 | } | |
585 | ||
586 | return TRUE; | |
587 | } | |
588 | ||
a092b084 | 589 | /* Read dwarf information from a buffer. */ |
252b5132 RH |
590 | |
591 | static unsigned int | |
dbb3fbbb | 592 | read_1_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf, bfd_byte *end) |
252b5132 | 593 | { |
dbb3fbbb NC |
594 | if (buf + 1 > end) |
595 | return 0; | |
818a27ac | 596 | return bfd_get_8 (abfd, buf); |
252b5132 RH |
597 | } |
598 | ||
599 | static int | |
dbb3fbbb | 600 | read_1_signed_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf, bfd_byte *end) |
252b5132 | 601 | { |
dbb3fbbb NC |
602 | if (buf + 1 > end) |
603 | return 0; | |
818a27ac | 604 | return bfd_get_signed_8 (abfd, buf); |
252b5132 RH |
605 | } |
606 | ||
607 | static unsigned int | |
dbb3fbbb | 608 | read_2_bytes (bfd *abfd, bfd_byte *buf, bfd_byte *end) |
252b5132 | 609 | { |
dbb3fbbb NC |
610 | if (buf + 2 > end) |
611 | return 0; | |
818a27ac | 612 | return bfd_get_16 (abfd, buf); |
252b5132 RH |
613 | } |
614 | ||
252b5132 | 615 | static unsigned int |
dbb3fbbb | 616 | read_4_bytes (bfd *abfd, bfd_byte *buf, bfd_byte *end) |
252b5132 | 617 | { |
dbb3fbbb NC |
618 | if (buf + 4 > end) |
619 | return 0; | |
818a27ac | 620 | return bfd_get_32 (abfd, buf); |
252b5132 RH |
621 | } |
622 | ||
8ce8c090 | 623 | static bfd_uint64_t |
dbb3fbbb | 624 | read_8_bytes (bfd *abfd, bfd_byte *buf, bfd_byte *end) |
252b5132 | 625 | { |
dbb3fbbb NC |
626 | if (buf + 8 > end) |
627 | return 0; | |
818a27ac | 628 | return bfd_get_64 (abfd, buf); |
252b5132 RH |
629 | } |
630 | ||
f075ee0c | 631 | static bfd_byte * |
12c96342 NC |
632 | read_n_bytes (bfd_byte * buf, |
633 | bfd_byte * end, | |
634 | struct dwarf_block * block) | |
252b5132 | 635 | { |
12c96342 NC |
636 | unsigned int size = block->size; |
637 | bfd_byte * block_end = buf + size; | |
638 | ||
639 | if (block_end > end || block_end < buf) | |
640 | { | |
641 | block->data = NULL; | |
642 | block->size = 0; | |
643 | return end; | |
644 | } | |
645 | else | |
646 | { | |
647 | block->data = buf; | |
648 | return block_end; | |
649 | } | |
252b5132 RH |
650 | } |
651 | ||
dbb3fbbb NC |
652 | /* Scans a NUL terminated string starting at BUF, returning a pointer to it. |
653 | Returns the number of characters in the string, *including* the NUL byte, | |
654 | in BYTES_READ_PTR. This value is set even if the function fails. Bytes | |
655 | at or beyond BUF_END will not be read. Returns NULL if there was a | |
656 | problem, or if the string is empty. */ | |
657 | ||
252b5132 | 658 | static char * |
07d6d2b8 AM |
659 | read_string (bfd * abfd ATTRIBUTE_UNUSED, |
660 | bfd_byte * buf, | |
661 | bfd_byte * buf_end, | |
dbb3fbbb | 662 | unsigned int * bytes_read_ptr) |
252b5132 | 663 | { |
dbb3fbbb NC |
664 | bfd_byte *str = buf; |
665 | ||
666 | if (buf >= buf_end) | |
667 | { | |
668 | * bytes_read_ptr = 0; | |
669 | return NULL; | |
670 | } | |
dc80fd5c | 671 | |
f075ee0c | 672 | if (*str == '\0') |
252b5132 | 673 | { |
dbb3fbbb | 674 | * bytes_read_ptr = 1; |
252b5132 RH |
675 | return NULL; |
676 | } | |
98591c73 | 677 | |
dbb3fbbb NC |
678 | while (buf < buf_end) |
679 | if (* buf ++ == 0) | |
680 | { | |
681 | * bytes_read_ptr = buf - str; | |
682 | return (char *) str; | |
683 | } | |
684 | ||
685 | * bytes_read_ptr = buf - str; | |
686 | return NULL; | |
252b5132 RH |
687 | } |
688 | ||
dbb3fbbb NC |
689 | /* Reads an offset from BUF and then locates the string at this offset |
690 | inside the debug string section. Returns a pointer to the string. | |
691 | Returns the number of bytes read from BUF, *not* the length of the string, | |
692 | in BYTES_READ_PTR. This value is set even if the function fails. Bytes | |
693 | at or beyond BUF_END will not be read from BUF. Returns NULL if there was | |
694 | a problem, or if the string is empty. Does not check for NUL termination | |
695 | of the string. */ | |
dc80fd5c | 696 | |
d03ba2a1 | 697 | static char * |
dc80fd5c | 698 | read_indirect_string (struct comp_unit * unit, |
07d6d2b8 AM |
699 | bfd_byte * buf, |
700 | bfd_byte * buf_end, | |
701 | unsigned int * bytes_read_ptr) | |
d03ba2a1 | 702 | { |
8ce8c090 | 703 | bfd_uint64_t offset; |
d03ba2a1 | 704 | struct dwarf2_debug *stash = unit->stash; |
99b06c60 | 705 | struct dwarf2_debug_file *file = unit->file; |
f075ee0c | 706 | char *str; |
d03ba2a1 | 707 | |
dbb3fbbb NC |
708 | if (buf + unit->offset_size > buf_end) |
709 | { | |
710 | * bytes_read_ptr = 0; | |
711 | return NULL; | |
712 | } | |
62f8d217 | 713 | |
d03ba2a1 | 714 | if (unit->offset_size == 4) |
dbb3fbbb | 715 | offset = read_4_bytes (unit->abfd, buf, buf_end); |
d03ba2a1 | 716 | else |
dbb3fbbb | 717 | offset = read_8_bytes (unit->abfd, buf, buf_end); |
dc80fd5c | 718 | |
d03ba2a1 JJ |
719 | *bytes_read_ptr = unit->offset_size; |
720 | ||
fc28f9aa | 721 | if (! read_section (unit->abfd, &stash->debug_sections[debug_str], |
99b06c60 AM |
722 | file->syms, offset, |
723 | &file->dwarf_str_buffer, &file->dwarf_str_size)) | |
dc80fd5c | 724 | return NULL; |
d03ba2a1 | 725 | |
99b06c60 | 726 | str = (char *) file->dwarf_str_buffer + offset; |
f075ee0c | 727 | if (*str == '\0') |
d03ba2a1 | 728 | return NULL; |
f075ee0c | 729 | return str; |
d03ba2a1 JJ |
730 | } |
731 | ||
0041f7df JK |
732 | /* Like read_indirect_string but from .debug_line_str section. */ |
733 | ||
734 | static char * | |
735 | read_indirect_line_string (struct comp_unit * unit, | |
07d6d2b8 AM |
736 | bfd_byte * buf, |
737 | bfd_byte * buf_end, | |
0041f7df JK |
738 | unsigned int * bytes_read_ptr) |
739 | { | |
740 | bfd_uint64_t offset; | |
741 | struct dwarf2_debug *stash = unit->stash; | |
99b06c60 | 742 | struct dwarf2_debug_file *file = unit->file; |
0041f7df JK |
743 | char *str; |
744 | ||
745 | if (buf + unit->offset_size > buf_end) | |
746 | { | |
747 | * bytes_read_ptr = 0; | |
748 | return NULL; | |
749 | } | |
750 | ||
751 | if (unit->offset_size == 4) | |
752 | offset = read_4_bytes (unit->abfd, buf, buf_end); | |
753 | else | |
754 | offset = read_8_bytes (unit->abfd, buf, buf_end); | |
755 | ||
756 | *bytes_read_ptr = unit->offset_size; | |
757 | ||
758 | if (! read_section (unit->abfd, &stash->debug_sections[debug_line_str], | |
99b06c60 AM |
759 | file->syms, offset, |
760 | &file->dwarf_line_str_buffer, | |
761 | &file->dwarf_line_str_size)) | |
0041f7df JK |
762 | return NULL; |
763 | ||
99b06c60 | 764 | str = (char *) file->dwarf_line_str_buffer + offset; |
0041f7df JK |
765 | if (*str == '\0') |
766 | return NULL; | |
767 | return str; | |
768 | } | |
769 | ||
95e34fb4 | 770 | /* Like read_indirect_string but uses a .debug_str located in |
93ee1e36 | 771 | an alternate file pointed to by the .gnu_debugaltlink section. |
95e34fb4 NC |
772 | Used to impement DW_FORM_GNU_strp_alt. */ |
773 | ||
774 | static char * | |
775 | read_alt_indirect_string (struct comp_unit * unit, | |
07d6d2b8 AM |
776 | bfd_byte * buf, |
777 | bfd_byte * buf_end, | |
95e34fb4 NC |
778 | unsigned int * bytes_read_ptr) |
779 | { | |
780 | bfd_uint64_t offset; | |
781 | struct dwarf2_debug *stash = unit->stash; | |
782 | char *str; | |
783 | ||
dbb3fbbb NC |
784 | if (buf + unit->offset_size > buf_end) |
785 | { | |
786 | * bytes_read_ptr = 0; | |
787 | return NULL; | |
788 | } | |
62f8d217 | 789 | |
95e34fb4 | 790 | if (unit->offset_size == 4) |
dbb3fbbb | 791 | offset = read_4_bytes (unit->abfd, buf, buf_end); |
95e34fb4 | 792 | else |
dbb3fbbb | 793 | offset = read_8_bytes (unit->abfd, buf, buf_end); |
95e34fb4 NC |
794 | |
795 | *bytes_read_ptr = unit->offset_size; | |
796 | ||
99b06c60 | 797 | if (stash->alt.bfd_ptr == NULL) |
95e34fb4 | 798 | { |
217d2eaa AM |
799 | bfd *debug_bfd; |
800 | char *debug_filename = bfd_follow_gnu_debugaltlink (unit->abfd, DEBUGDIR); | |
95e34fb4 NC |
801 | |
802 | if (debug_filename == NULL) | |
803 | return NULL; | |
804 | ||
217d2eaa AM |
805 | debug_bfd = bfd_openr (debug_filename, NULL); |
806 | free (debug_filename); | |
807 | if (debug_bfd == NULL) | |
808 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
809 | return NULL; | |
95e34fb4 | 810 | |
217d2eaa AM |
811 | if (!bfd_check_format (debug_bfd, bfd_object)) |
812 | { | |
813 | bfd_close (debug_bfd); | |
95e34fb4 NC |
814 | return NULL; |
815 | } | |
99b06c60 | 816 | stash->alt.bfd_ptr = debug_bfd; |
95e34fb4 | 817 | } |
62f8d217 | 818 | |
99b06c60 | 819 | if (! read_section (unit->stash->alt.bfd_ptr, |
95e34fb4 | 820 | stash->debug_sections + debug_str_alt, |
99b06c60 AM |
821 | stash->alt.syms, offset, |
822 | &stash->alt.dwarf_str_buffer, | |
823 | &stash->alt.dwarf_str_size)) | |
95e34fb4 NC |
824 | return NULL; |
825 | ||
99b06c60 | 826 | str = (char *) stash->alt.dwarf_str_buffer + offset; |
95e34fb4 NC |
827 | if (*str == '\0') |
828 | return NULL; | |
829 | ||
830 | return str; | |
831 | } | |
832 | ||
833 | /* Resolve an alternate reference from UNIT at OFFSET. | |
834 | Returns a pointer into the loaded alternate CU upon success | |
835 | or NULL upon failure. */ | |
836 | ||
837 | static bfd_byte * | |
838 | read_alt_indirect_ref (struct comp_unit * unit, | |
839 | bfd_uint64_t offset) | |
840 | { | |
841 | struct dwarf2_debug *stash = unit->stash; | |
842 | ||
99b06c60 | 843 | if (stash->alt.bfd_ptr == NULL) |
95e34fb4 | 844 | { |
217d2eaa AM |
845 | bfd *debug_bfd; |
846 | char *debug_filename = bfd_follow_gnu_debugaltlink (unit->abfd, DEBUGDIR); | |
95e34fb4 NC |
847 | |
848 | if (debug_filename == NULL) | |
1b8e1271 | 849 | return NULL; |
95e34fb4 | 850 | |
217d2eaa AM |
851 | debug_bfd = bfd_openr (debug_filename, NULL); |
852 | free (debug_filename); | |
853 | if (debug_bfd == NULL) | |
854 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
855 | return NULL; | |
95e34fb4 | 856 | |
217d2eaa AM |
857 | if (!bfd_check_format (debug_bfd, bfd_object)) |
858 | { | |
859 | bfd_close (debug_bfd); | |
95e34fb4 NC |
860 | return NULL; |
861 | } | |
99b06c60 | 862 | stash->alt.bfd_ptr = debug_bfd; |
95e34fb4 | 863 | } |
62f8d217 | 864 | |
99b06c60 | 865 | if (! read_section (unit->stash->alt.bfd_ptr, |
95e34fb4 | 866 | stash->debug_sections + debug_info_alt, |
99b06c60 AM |
867 | stash->alt.syms, offset, |
868 | &stash->alt.dwarf_info_buffer, | |
869 | &stash->alt.dwarf_info_size)) | |
95e34fb4 NC |
870 | return NULL; |
871 | ||
99b06c60 | 872 | return stash->alt.dwarf_info_buffer + offset; |
95e34fb4 NC |
873 | } |
874 | ||
8ce8c090 | 875 | static bfd_uint64_t |
dbb3fbbb | 876 | read_address (struct comp_unit *unit, bfd_byte *buf, bfd_byte * buf_end) |
252b5132 | 877 | { |
fa15f18d AM |
878 | int signed_vma = 0; |
879 | ||
880 | if (bfd_get_flavour (unit->abfd) == bfd_target_elf_flavour) | |
881 | signed_vma = get_elf_backend_data (unit->abfd)->sign_extend_vma; | |
0af4cd7c | 882 | |
dbb3fbbb NC |
883 | if (buf + unit->addr_size > buf_end) |
884 | return 0; | |
885 | ||
0af4cd7c PK |
886 | if (signed_vma) |
887 | { | |
888 | switch (unit->addr_size) | |
889 | { | |
890 | case 8: | |
891 | return bfd_get_signed_64 (unit->abfd, buf); | |
892 | case 4: | |
893 | return bfd_get_signed_32 (unit->abfd, buf); | |
894 | case 2: | |
895 | return bfd_get_signed_16 (unit->abfd, buf); | |
896 | default: | |
897 | abort (); | |
898 | } | |
899 | } | |
900 | else | |
252b5132 | 901 | { |
0af4cd7c PK |
902 | switch (unit->addr_size) |
903 | { | |
904 | case 8: | |
905 | return bfd_get_64 (unit->abfd, buf); | |
906 | case 4: | |
907 | return bfd_get_32 (unit->abfd, buf); | |
908 | case 2: | |
909 | return bfd_get_16 (unit->abfd, buf); | |
910 | default: | |
911 | abort (); | |
912 | } | |
252b5132 | 913 | } |
252b5132 RH |
914 | } |
915 | ||
252b5132 RH |
916 | /* Lookup an abbrev_info structure in the abbrev hash table. */ |
917 | ||
918 | static struct abbrev_info * | |
818a27ac | 919 | lookup_abbrev (unsigned int number, struct abbrev_info **abbrevs) |
252b5132 RH |
920 | { |
921 | unsigned int hash_number; | |
922 | struct abbrev_info *abbrev; | |
923 | ||
924 | hash_number = number % ABBREV_HASH_SIZE; | |
925 | abbrev = abbrevs[hash_number]; | |
926 | ||
927 | while (abbrev) | |
928 | { | |
929 | if (abbrev->number == number) | |
930 | return abbrev; | |
931 | else | |
932 | abbrev = abbrev->next; | |
933 | } | |
98591c73 | 934 | |
252b5132 RH |
935 | return NULL; |
936 | } | |
937 | ||
e63ef095 AM |
938 | /* We keep a hash table to map .debug_abbrev section offsets to the |
939 | array of abbrevs, so that compilation units using the same set of | |
940 | abbrevs do not waste memory. */ | |
941 | ||
942 | struct abbrev_offset_entry | |
943 | { | |
944 | size_t offset; | |
945 | struct abbrev_info **abbrevs; | |
946 | }; | |
947 | ||
948 | static hashval_t | |
949 | hash_abbrev (const void *p) | |
950 | { | |
951 | const struct abbrev_offset_entry *ent = p; | |
952 | return htab_hash_pointer ((void *) ent->offset); | |
953 | } | |
954 | ||
955 | static int | |
956 | eq_abbrev (const void *pa, const void *pb) | |
957 | { | |
958 | const struct abbrev_offset_entry *a = pa; | |
959 | const struct abbrev_offset_entry *b = pb; | |
960 | return a->offset == b->offset; | |
961 | } | |
962 | ||
963 | static void | |
964 | del_abbrev (void *p) | |
965 | { | |
966 | struct abbrev_offset_entry *ent = p; | |
967 | struct abbrev_info **abbrevs = ent->abbrevs; | |
968 | size_t i; | |
969 | ||
970 | for (i = 0; i < ABBREV_HASH_SIZE; i++) | |
971 | { | |
972 | struct abbrev_info *abbrev = abbrevs[i]; | |
973 | ||
974 | while (abbrev) | |
975 | { | |
976 | free (abbrev->attrs); | |
977 | abbrev = abbrev->next; | |
978 | } | |
979 | } | |
980 | free (ent); | |
981 | } | |
982 | ||
252b5132 RH |
983 | /* In DWARF version 2, the description of the debugging information is |
984 | stored in a separate .debug_abbrev section. Before we read any | |
985 | dies from a section we read in all abbreviations and install them | |
986 | in a hash table. */ | |
987 | ||
988 | static struct abbrev_info** | |
99b06c60 AM |
989 | read_abbrevs (bfd *abfd, bfd_uint64_t offset, struct dwarf2_debug *stash, |
990 | struct dwarf2_debug_file *file) | |
252b5132 RH |
991 | { |
992 | struct abbrev_info **abbrevs; | |
f075ee0c | 993 | bfd_byte *abbrev_ptr; |
dbb3fbbb | 994 | bfd_byte *abbrev_end; |
252b5132 RH |
995 | struct abbrev_info *cur_abbrev; |
996 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
997 | unsigned int abbrev_form, hash_number; | |
986f0783 | 998 | size_t amt; |
e63ef095 AM |
999 | void **slot; |
1000 | struct abbrev_offset_entry ent = { offset, NULL }; | |
1001 | ||
1002 | if (ent.offset != offset) | |
1003 | return NULL; | |
1004 | ||
1005 | slot = htab_find_slot (file->abbrev_offsets, &ent, INSERT); | |
1006 | if (slot == NULL) | |
1007 | return NULL; | |
1008 | if (*slot != NULL) | |
1009 | return ((struct abbrev_offset_entry *) (*slot))->abbrevs; | |
252b5132 | 1010 | |
fc28f9aa | 1011 | if (! read_section (abfd, &stash->debug_sections[debug_abbrev], |
99b06c60 AM |
1012 | file->syms, offset, |
1013 | &file->dwarf_abbrev_buffer, | |
1014 | &file->dwarf_abbrev_size)) | |
8af6b354 | 1015 | return NULL; |
252b5132 | 1016 | |
dc810e39 | 1017 | amt = sizeof (struct abbrev_info*) * ABBREV_HASH_SIZE; |
a50b1753 | 1018 | abbrevs = (struct abbrev_info **) bfd_zalloc (abfd, amt); |
8af6b354 AM |
1019 | if (abbrevs == NULL) |
1020 | return NULL; | |
252b5132 | 1021 | |
99b06c60 AM |
1022 | abbrev_ptr = file->dwarf_abbrev_buffer + offset; |
1023 | abbrev_end = file->dwarf_abbrev_buffer + file->dwarf_abbrev_size; | |
c7c3d11b PA |
1024 | abbrev_number = _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, |
1025 | FALSE, abbrev_end); | |
252b5132 RH |
1026 | abbrev_ptr += bytes_read; |
1027 | ||
a092b084 | 1028 | /* Loop until we reach an abbrev number of 0. */ |
252b5132 RH |
1029 | while (abbrev_number) |
1030 | { | |
dc810e39 | 1031 | amt = sizeof (struct abbrev_info); |
a50b1753 | 1032 | cur_abbrev = (struct abbrev_info *) bfd_zalloc (abfd, amt); |
8af6b354 | 1033 | if (cur_abbrev == NULL) |
019cc875 | 1034 | goto fail; |
252b5132 | 1035 | |
a092b084 | 1036 | /* Read in abbrev header. */ |
252b5132 | 1037 | cur_abbrev->number = abbrev_number; |
d45913a0 | 1038 | cur_abbrev->tag = (enum dwarf_tag) |
4265548c PA |
1039 | _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, |
1040 | FALSE, abbrev_end); | |
252b5132 | 1041 | abbrev_ptr += bytes_read; |
dbb3fbbb | 1042 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr, abbrev_end); |
252b5132 RH |
1043 | abbrev_ptr += 1; |
1044 | ||
a092b084 | 1045 | /* Now read in declarations. */ |
0041f7df | 1046 | for (;;) |
252b5132 | 1047 | { |
0041f7df JK |
1048 | /* Initialize it just to avoid a GCC false warning. */ |
1049 | bfd_vma implicit_const = -1; | |
1050 | ||
1051 | abbrev_name = _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, | |
1052 | FALSE, abbrev_end); | |
1053 | abbrev_ptr += bytes_read; | |
1054 | abbrev_form = _bfd_safe_read_leb128 (abfd, abbrev_ptr, &bytes_read, | |
1055 | FALSE, abbrev_end); | |
1056 | abbrev_ptr += bytes_read; | |
1057 | if (abbrev_form == DW_FORM_implicit_const) | |
1058 | { | |
1059 | implicit_const = _bfd_safe_read_leb128 (abfd, abbrev_ptr, | |
1060 | &bytes_read, TRUE, | |
1061 | abbrev_end); | |
1062 | abbrev_ptr += bytes_read; | |
1063 | } | |
1064 | ||
1065 | if (abbrev_name == 0) | |
1066 | break; | |
1067 | ||
252b5132 RH |
1068 | if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0) |
1069 | { | |
35330cce NC |
1070 | struct attr_abbrev *tmp; |
1071 | ||
dc810e39 AM |
1072 | amt = cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK; |
1073 | amt *= sizeof (struct attr_abbrev); | |
a50b1753 | 1074 | tmp = (struct attr_abbrev *) bfd_realloc (cur_abbrev->attrs, amt); |
35330cce | 1075 | if (tmp == NULL) |
019cc875 | 1076 | goto fail; |
35330cce | 1077 | cur_abbrev->attrs = tmp; |
252b5132 | 1078 | } |
98591c73 | 1079 | |
d45913a0 DA |
1080 | cur_abbrev->attrs[cur_abbrev->num_attrs].name |
1081 | = (enum dwarf_attribute) abbrev_name; | |
0041f7df | 1082 | cur_abbrev->attrs[cur_abbrev->num_attrs].form |
d45913a0 | 1083 | = (enum dwarf_form) abbrev_form; |
0041f7df JK |
1084 | cur_abbrev->attrs[cur_abbrev->num_attrs].implicit_const |
1085 | = implicit_const; | |
1086 | ++cur_abbrev->num_attrs; | |
252b5132 RH |
1087 | } |
1088 | ||
1089 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
1090 | cur_abbrev->next = abbrevs[hash_number]; | |
1091 | abbrevs[hash_number] = cur_abbrev; | |
1092 | ||
1093 | /* Get next abbreviation. | |
e82ce529 | 1094 | Under Irix6 the abbreviations for a compilation unit are not |
252b5132 RH |
1095 | always properly terminated with an abbrev number of 0. |
1096 | Exit loop if we encounter an abbreviation which we have | |
1097 | already read (which means we are about to read the abbreviations | |
1098 | for the next compile unit) or if the end of the abbreviation | |
1099 | table is reached. */ | |
99b06c60 AM |
1100 | if ((size_t) (abbrev_ptr - file->dwarf_abbrev_buffer) |
1101 | >= file->dwarf_abbrev_size) | |
252b5132 | 1102 | break; |
4265548c PA |
1103 | abbrev_number = _bfd_safe_read_leb128 (abfd, abbrev_ptr, |
1104 | &bytes_read, FALSE, abbrev_end); | |
252b5132 | 1105 | abbrev_ptr += bytes_read; |
dbb3fbbb | 1106 | if (lookup_abbrev (abbrev_number, abbrevs) != NULL) |
252b5132 RH |
1107 | break; |
1108 | } | |
e63ef095 AM |
1109 | |
1110 | *slot = bfd_malloc (sizeof ent); | |
1111 | if (!*slot) | |
1112 | goto fail; | |
1113 | ent.abbrevs = abbrevs; | |
1114 | memcpy (*slot, &ent, sizeof ent); | |
252b5132 | 1115 | return abbrevs; |
019cc875 AM |
1116 | |
1117 | fail: | |
1118 | if (abbrevs != NULL) | |
1119 | { | |
1120 | size_t i; | |
1121 | ||
1122 | for (i = 0; i < ABBREV_HASH_SIZE; i++) | |
1123 | { | |
1124 | struct abbrev_info *abbrev = abbrevs[i]; | |
1125 | ||
1126 | while (abbrev) | |
1127 | { | |
1128 | free (abbrev->attrs); | |
1129 | abbrev = abbrev->next; | |
1130 | } | |
1131 | } | |
1132 | free (abbrevs); | |
1133 | } | |
1134 | return NULL; | |
252b5132 RH |
1135 | } |
1136 | ||
60d77146 NC |
1137 | /* Returns true if the form is one which has a string value. */ |
1138 | ||
1139 | static inline bfd_boolean | |
1140 | is_str_attr (enum dwarf_form form) | |
1141 | { | |
0041f7df JK |
1142 | return (form == DW_FORM_string || form == DW_FORM_strp |
1143 | || form == DW_FORM_line_strp || form == DW_FORM_GNU_strp_alt); | |
60d77146 NC |
1144 | } |
1145 | ||
dbb3fbbb NC |
1146 | /* Read and fill in the value of attribute ATTR as described by FORM. |
1147 | Read data starting from INFO_PTR, but never at or beyond INFO_PTR_END. | |
1148 | Returns an updated INFO_PTR taking into account the amount of data read. */ | |
252b5132 | 1149 | |
f075ee0c | 1150 | static bfd_byte * |
dbb3fbbb | 1151 | read_attribute_value (struct attribute * attr, |
07d6d2b8 AM |
1152 | unsigned form, |
1153 | bfd_vma implicit_const, | |
dbb3fbbb | 1154 | struct comp_unit * unit, |
07d6d2b8 AM |
1155 | bfd_byte * info_ptr, |
1156 | bfd_byte * info_ptr_end) | |
252b5132 RH |
1157 | { |
1158 | bfd *abfd = unit->abfd; | |
1159 | unsigned int bytes_read; | |
1160 | struct dwarf_block *blk; | |
986f0783 | 1161 | size_t amt; |
252b5132 | 1162 | |
a97fbc7e | 1163 | if (info_ptr >= info_ptr_end && form != DW_FORM_flag_present) |
dbb3fbbb | 1164 | { |
9793eb77 | 1165 | _bfd_error_handler (_("DWARF error: info pointer extends beyond end of attributes")); |
dbb3fbbb NC |
1166 | bfd_set_error (bfd_error_bad_value); |
1167 | return info_ptr; | |
1168 | } | |
1169 | ||
d45913a0 | 1170 | attr->form = (enum dwarf_form) form; |
98591c73 | 1171 | |
cf716c56 | 1172 | switch (form) |
252b5132 | 1173 | { |
252b5132 | 1174 | case DW_FORM_ref_addr: |
5609a71e DJ |
1175 | /* DW_FORM_ref_addr is an address in DWARF2, and an offset in |
1176 | DWARF3. */ | |
c07cbdd7 | 1177 | if (unit->version == 3 || unit->version == 4) |
5609a71e DJ |
1178 | { |
1179 | if (unit->offset_size == 4) | |
dbb3fbbb | 1180 | attr->u.val = read_4_bytes (unit->abfd, info_ptr, info_ptr_end); |
5609a71e | 1181 | else |
dbb3fbbb | 1182 | attr->u.val = read_8_bytes (unit->abfd, info_ptr, info_ptr_end); |
5609a71e DJ |
1183 | info_ptr += unit->offset_size; |
1184 | break; | |
1185 | } | |
1186 | /* FALLTHROUGH */ | |
1187 | case DW_FORM_addr: | |
dbb3fbbb | 1188 | attr->u.val = read_address (unit, info_ptr, info_ptr_end); |
252b5132 RH |
1189 | info_ptr += unit->addr_size; |
1190 | break; | |
95e34fb4 | 1191 | case DW_FORM_GNU_ref_alt: |
c07cbdd7 JJ |
1192 | case DW_FORM_sec_offset: |
1193 | if (unit->offset_size == 4) | |
dbb3fbbb | 1194 | attr->u.val = read_4_bytes (unit->abfd, info_ptr, info_ptr_end); |
c07cbdd7 | 1195 | else |
dbb3fbbb | 1196 | attr->u.val = read_8_bytes (unit->abfd, info_ptr, info_ptr_end); |
c07cbdd7 JJ |
1197 | info_ptr += unit->offset_size; |
1198 | break; | |
252b5132 | 1199 | case DW_FORM_block2: |
dc810e39 | 1200 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1201 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1202 | if (blk == NULL) |
1203 | return NULL; | |
dbb3fbbb | 1204 | blk->size = read_2_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 | 1205 | info_ptr += 2; |
12c96342 | 1206 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1207 | attr->u.blk = blk; |
252b5132 RH |
1208 | break; |
1209 | case DW_FORM_block4: | |
dc810e39 | 1210 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1211 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1212 | if (blk == NULL) |
1213 | return NULL; | |
dbb3fbbb | 1214 | blk->size = read_4_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 | 1215 | info_ptr += 4; |
12c96342 | 1216 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1217 | attr->u.blk = blk; |
252b5132 RH |
1218 | break; |
1219 | case DW_FORM_data2: | |
dbb3fbbb | 1220 | attr->u.val = read_2_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1221 | info_ptr += 2; |
1222 | break; | |
1223 | case DW_FORM_data4: | |
dbb3fbbb | 1224 | attr->u.val = read_4_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1225 | info_ptr += 4; |
1226 | break; | |
1227 | case DW_FORM_data8: | |
dbb3fbbb | 1228 | attr->u.val = read_8_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1229 | info_ptr += 8; |
1230 | break; | |
1231 | case DW_FORM_string: | |
dbb3fbbb | 1232 | attr->u.str = read_string (abfd, info_ptr, info_ptr_end, &bytes_read); |
252b5132 RH |
1233 | info_ptr += bytes_read; |
1234 | break; | |
d03ba2a1 | 1235 | case DW_FORM_strp: |
dbb3fbbb | 1236 | attr->u.str = read_indirect_string (unit, info_ptr, info_ptr_end, &bytes_read); |
d03ba2a1 JJ |
1237 | info_ptr += bytes_read; |
1238 | break; | |
0041f7df JK |
1239 | case DW_FORM_line_strp: |
1240 | attr->u.str = read_indirect_line_string (unit, info_ptr, info_ptr_end, &bytes_read); | |
1241 | info_ptr += bytes_read; | |
1242 | break; | |
95e34fb4 | 1243 | case DW_FORM_GNU_strp_alt: |
dbb3fbbb | 1244 | attr->u.str = read_alt_indirect_string (unit, info_ptr, info_ptr_end, &bytes_read); |
95e34fb4 NC |
1245 | info_ptr += bytes_read; |
1246 | break; | |
c07cbdd7 | 1247 | case DW_FORM_exprloc: |
252b5132 | 1248 | case DW_FORM_block: |
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; | |
4265548c PA |
1253 | blk->size = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1254 | FALSE, info_ptr_end); | |
252b5132 | 1255 | info_ptr += bytes_read; |
12c96342 | 1256 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1257 | attr->u.blk = blk; |
252b5132 RH |
1258 | break; |
1259 | case DW_FORM_block1: | |
dc810e39 | 1260 | amt = sizeof (struct dwarf_block); |
a50b1753 | 1261 | blk = (struct dwarf_block *) bfd_alloc (abfd, amt); |
8af6b354 AM |
1262 | if (blk == NULL) |
1263 | return NULL; | |
dbb3fbbb | 1264 | blk->size = read_1_byte (abfd, info_ptr, info_ptr_end); |
252b5132 | 1265 | info_ptr += 1; |
12c96342 | 1266 | info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk); |
482e2e37 | 1267 | attr->u.blk = blk; |
252b5132 RH |
1268 | break; |
1269 | case DW_FORM_data1: | |
dbb3fbbb | 1270 | attr->u.val = read_1_byte (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1271 | info_ptr += 1; |
1272 | break; | |
1273 | case DW_FORM_flag: | |
dbb3fbbb | 1274 | attr->u.val = read_1_byte (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1275 | info_ptr += 1; |
1276 | break; | |
c07cbdd7 JJ |
1277 | case DW_FORM_flag_present: |
1278 | attr->u.val = 1; | |
1279 | break; | |
252b5132 | 1280 | case DW_FORM_sdata: |
4265548c PA |
1281 | attr->u.sval = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1282 | TRUE, info_ptr_end); | |
252b5132 RH |
1283 | info_ptr += bytes_read; |
1284 | break; | |
1285 | case DW_FORM_udata: | |
4265548c PA |
1286 | attr->u.val = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1287 | FALSE, info_ptr_end); | |
252b5132 RH |
1288 | info_ptr += bytes_read; |
1289 | break; | |
1290 | case DW_FORM_ref1: | |
dbb3fbbb | 1291 | attr->u.val = read_1_byte (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1292 | info_ptr += 1; |
1293 | break; | |
1294 | case DW_FORM_ref2: | |
dbb3fbbb | 1295 | attr->u.val = read_2_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1296 | info_ptr += 2; |
1297 | break; | |
1298 | case DW_FORM_ref4: | |
dbb3fbbb | 1299 | attr->u.val = read_4_bytes (abfd, info_ptr, info_ptr_end); |
252b5132 RH |
1300 | info_ptr += 4; |
1301 | break; | |
81edd86d | 1302 | case DW_FORM_ref8: |
dbb3fbbb | 1303 | attr->u.val = read_8_bytes (abfd, info_ptr, info_ptr_end); |
81edd86d MM |
1304 | info_ptr += 8; |
1305 | break; | |
a37a68dd | 1306 | case DW_FORM_ref_sig8: |
dbb3fbbb | 1307 | attr->u.val = read_8_bytes (abfd, info_ptr, info_ptr_end); |
a37a68dd CC |
1308 | info_ptr += 8; |
1309 | break; | |
252b5132 | 1310 | case DW_FORM_ref_udata: |
4265548c PA |
1311 | attr->u.val = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1312 | FALSE, info_ptr_end); | |
252b5132 RH |
1313 | info_ptr += bytes_read; |
1314 | break; | |
252b5132 | 1315 | case DW_FORM_indirect: |
4265548c PA |
1316 | form = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
1317 | FALSE, info_ptr_end); | |
cf716c56 | 1318 | info_ptr += bytes_read; |
0041f7df JK |
1319 | if (form == DW_FORM_implicit_const) |
1320 | { | |
1321 | implicit_const = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, | |
1322 | TRUE, info_ptr_end); | |
1323 | info_ptr += bytes_read; | |
1324 | } | |
1325 | info_ptr = read_attribute_value (attr, form, implicit_const, unit, | |
1326 | info_ptr, info_ptr_end); | |
1327 | break; | |
1328 | case DW_FORM_implicit_const: | |
1329 | attr->form = DW_FORM_sdata; | |
1330 | attr->u.sval = implicit_const; | |
cf716c56 | 1331 | break; |
252b5132 | 1332 | default: |
9793eb77 | 1333 | _bfd_error_handler (_("DWARF error: invalid or unhandled FORM value: %#x"), |
4eca0228 | 1334 | form); |
252b5132 | 1335 | bfd_set_error (bfd_error_bad_value); |
c07cbdd7 | 1336 | return NULL; |
252b5132 RH |
1337 | } |
1338 | return info_ptr; | |
1339 | } | |
1340 | ||
cf716c56 RH |
1341 | /* Read an attribute described by an abbreviated attribute. */ |
1342 | ||
f075ee0c | 1343 | static bfd_byte * |
dbb3fbbb NC |
1344 | read_attribute (struct attribute * attr, |
1345 | struct attr_abbrev * abbrev, | |
1346 | struct comp_unit * unit, | |
07d6d2b8 AM |
1347 | bfd_byte * info_ptr, |
1348 | bfd_byte * info_ptr_end) | |
cf716c56 RH |
1349 | { |
1350 | attr->name = abbrev->name; | |
0041f7df JK |
1351 | info_ptr = read_attribute_value (attr, abbrev->form, abbrev->implicit_const, |
1352 | unit, info_ptr, info_ptr_end); | |
cf716c56 RH |
1353 | return info_ptr; |
1354 | } | |
1355 | ||
e00e8198 AM |
1356 | /* Return whether DW_AT_name will return the same as DW_AT_linkage_name |
1357 | for a function. */ | |
1358 | ||
1359 | static bfd_boolean | |
1360 | non_mangled (int lang) | |
1361 | { | |
1362 | switch (lang) | |
1363 | { | |
1364 | default: | |
1365 | return FALSE; | |
1366 | ||
1367 | case DW_LANG_C89: | |
1368 | case DW_LANG_C: | |
1369 | case DW_LANG_Ada83: | |
1370 | case DW_LANG_Cobol74: | |
1371 | case DW_LANG_Cobol85: | |
1372 | case DW_LANG_Fortran77: | |
1373 | case DW_LANG_Pascal83: | |
1374 | case DW_LANG_C99: | |
1375 | case DW_LANG_Ada95: | |
1376 | case DW_LANG_PLI: | |
1377 | case DW_LANG_UPC: | |
1378 | case DW_LANG_C11: | |
1379 | return TRUE; | |
1380 | } | |
1381 | } | |
1382 | ||
a092b084 | 1383 | /* Source line information table routines. */ |
252b5132 RH |
1384 | |
1385 | #define FILE_ALLOC_CHUNK 5 | |
1386 | #define DIR_ALLOC_CHUNK 5 | |
1387 | ||
a092b084 NC |
1388 | struct line_info |
1389 | { | |
089e3718 IT |
1390 | struct line_info * prev_line; |
1391 | bfd_vma address; | |
1392 | char * filename; | |
1393 | unsigned int line; | |
1394 | unsigned int column; | |
1395 | unsigned int discriminator; | |
1396 | unsigned char op_index; | |
1397 | unsigned char end_sequence; /* End of (sequential) code sequence. */ | |
252b5132 RH |
1398 | }; |
1399 | ||
a092b084 NC |
1400 | struct fileinfo |
1401 | { | |
089e3718 IT |
1402 | char * name; |
1403 | unsigned int dir; | |
1404 | unsigned int time; | |
1405 | unsigned int size; | |
252b5132 RH |
1406 | }; |
1407 | ||
0ee19663 NC |
1408 | struct line_sequence |
1409 | { | |
07d6d2b8 | 1410 | bfd_vma low_pc; |
0ee19663 | 1411 | struct line_sequence* prev_sequence; |
07d6d2b8 AM |
1412 | struct line_info* last_line; /* Largest VMA. */ |
1413 | struct line_info** line_info_lookup; | |
089e3718 | 1414 | bfd_size_type num_lines; |
0ee19663 NC |
1415 | }; |
1416 | ||
a092b084 NC |
1417 | struct line_info_table |
1418 | { | |
07d6d2b8 AM |
1419 | bfd * abfd; |
1420 | unsigned int num_files; | |
1421 | unsigned int num_dirs; | |
1422 | unsigned int num_sequences; | |
1423 | char * comp_dir; | |
1424 | char ** dirs; | |
1425 | struct fileinfo* files; | |
0ee19663 | 1426 | struct line_sequence* sequences; |
07d6d2b8 | 1427 | struct line_info* lcl_head; /* Local head; used in 'add_line_info'. */ |
252b5132 RH |
1428 | }; |
1429 | ||
4ab527b0 FF |
1430 | /* Remember some information about each function. If the function is |
1431 | inlined (DW_TAG_inlined_subroutine) it may have two additional | |
1432 | attributes, DW_AT_call_file and DW_AT_call_line, which specify the | |
a2a50954 | 1433 | source code location where this function was inlined. */ |
4ab527b0 | 1434 | |
1ee24f27 DJ |
1435 | struct funcinfo |
1436 | { | |
a2a50954 | 1437 | /* Pointer to previous function in list of all functions. */ |
089e3718 | 1438 | struct funcinfo * prev_func; |
a2a50954 | 1439 | /* Pointer to function one scope higher. */ |
089e3718 | 1440 | struct funcinfo * caller_func; |
a2a50954 | 1441 | /* Source location file name where caller_func inlines this func. */ |
089e3718 | 1442 | char * caller_file; |
a2a50954 | 1443 | /* Source location file name. */ |
089e3718 | 1444 | char * file; |
e00e8198 | 1445 | /* Source location line number where caller_func inlines this func. */ |
089e3718 | 1446 | int caller_line; |
a2a50954 | 1447 | /* Source location line number. */ |
089e3718 IT |
1448 | int line; |
1449 | int tag; | |
3b0d929d | 1450 | bfd_boolean is_linkage; |
089e3718 IT |
1451 | const char * name; |
1452 | struct arange arange; | |
a2a50954 | 1453 | /* Where the symbol is defined. */ |
089e3718 IT |
1454 | asection * sec; |
1455 | }; | |
1456 | ||
1457 | struct lookup_funcinfo | |
1458 | { | |
1459 | /* Function information corresponding to this lookup table entry. */ | |
1460 | struct funcinfo * funcinfo; | |
1461 | ||
1462 | /* The lowest address for this specific function. */ | |
07d6d2b8 | 1463 | bfd_vma low_addr; |
089e3718 IT |
1464 | |
1465 | /* The highest address of this function before the lookup table is sorted. | |
1466 | The highest address of all prior functions after the lookup table is | |
1467 | sorted, which is used for binary search. */ | |
07d6d2b8 | 1468 | bfd_vma high_addr; |
8025b055 AM |
1469 | /* Index of this function, used to ensure qsort is stable. */ |
1470 | unsigned int idx; | |
5420f73d L |
1471 | }; |
1472 | ||
1473 | struct varinfo | |
1474 | { | |
f3a08f77 | 1475 | /* Pointer to previous variable in list of all variables. */ |
5420f73d | 1476 | struct varinfo *prev_var; |
f3a08f77 NC |
1477 | /* The offset of the varinfo from the start of the unit. */ |
1478 | bfd_uint64_t unit_offset; | |
1479 | /* Source location file name. */ | |
5420f73d | 1480 | char *file; |
f3a08f77 | 1481 | /* Source location line number. */ |
5420f73d | 1482 | int line; |
f3a08f77 | 1483 | /* The type of this variable. */ |
5420f73d | 1484 | int tag; |
f3a08f77 | 1485 | /* The name of the variable, if it has one. */ |
5420f73d | 1486 | char *name; |
f3a08f77 | 1487 | /* The address of the variable. */ |
5cf2e3f0 | 1488 | bfd_vma addr; |
f3a08f77 | 1489 | /* Where the symbol is defined. */ |
5420f73d | 1490 | asection *sec; |
f3a08f77 NC |
1491 | /* Is this a stack variable? */ |
1492 | bfd_boolean stack; | |
1ee24f27 DJ |
1493 | }; |
1494 | ||
d4c32a81 L |
1495 | /* Return TRUE if NEW_LINE should sort after LINE. */ |
1496 | ||
1497 | static inline bfd_boolean | |
1498 | new_line_sorts_after (struct line_info *new_line, struct line_info *line) | |
1499 | { | |
1500 | return (new_line->address > line->address | |
1501 | || (new_line->address == line->address | |
20230942 | 1502 | && new_line->op_index > line->op_index)); |
d4c32a81 L |
1503 | } |
1504 | ||
1505 | ||
af3ef9fe NC |
1506 | /* Adds a new entry to the line_info list in the line_info_table, ensuring |
1507 | that the list is sorted. Note that the line_info list is sorted from | |
1508 | highest to lowest VMA (with possible duplicates); that is, | |
1509 | line_info->prev_line always accesses an equal or smaller VMA. */ | |
1510 | ||
8af6b354 | 1511 | static bfd_boolean |
818a27ac AM |
1512 | add_line_info (struct line_info_table *table, |
1513 | bfd_vma address, | |
a233b20c | 1514 | unsigned char op_index, |
818a27ac AM |
1515 | char *filename, |
1516 | unsigned int line, | |
1517 | unsigned int column, | |
9b8d1a36 | 1518 | unsigned int discriminator, |
818a27ac | 1519 | int end_sequence) |
252b5132 | 1520 | { |
986f0783 | 1521 | size_t amt = sizeof (struct line_info); |
0ee19663 | 1522 | struct line_sequence* seq = table->sequences; |
a50b1753 | 1523 | struct line_info* info = (struct line_info *) bfd_alloc (table->abfd, amt); |
252b5132 | 1524 | |
8af6b354 AM |
1525 | if (info == NULL) |
1526 | return FALSE; | |
1527 | ||
d4c32a81 | 1528 | /* Set member data of 'info'. */ |
f5296ddc | 1529 | info->prev_line = NULL; |
d4c32a81 | 1530 | info->address = address; |
a233b20c | 1531 | info->op_index = op_index; |
d4c32a81 L |
1532 | info->line = line; |
1533 | info->column = column; | |
9b8d1a36 | 1534 | info->discriminator = discriminator; |
d4c32a81 L |
1535 | info->end_sequence = end_sequence; |
1536 | ||
1537 | if (filename && filename[0]) | |
1538 | { | |
a50b1753 | 1539 | info->filename = (char *) bfd_alloc (table->abfd, strlen (filename) + 1); |
8af6b354 AM |
1540 | if (info->filename == NULL) |
1541 | return FALSE; | |
1542 | strcpy (info->filename, filename); | |
d4c32a81 L |
1543 | } |
1544 | else | |
1545 | info->filename = NULL; | |
1546 | ||
e82ce529 AM |
1547 | /* Find the correct location for 'info'. Normally we will receive |
1548 | new line_info data 1) in order and 2) with increasing VMAs. | |
1549 | However some compilers break the rules (cf. decode_line_info) and | |
1550 | so we include some heuristics for quickly finding the correct | |
1551 | location for 'info'. In particular, these heuristics optimize for | |
1552 | the common case in which the VMA sequence that we receive is a | |
1553 | list of locally sorted VMAs such as | |
1554 | p...z a...j (where a < j < p < z) | |
252b5132 | 1555 | |
e82ce529 | 1556 | Note: table->lcl_head is used to head an *actual* or *possible* |
0ee19663 | 1557 | sub-sequence within the list (such as a...j) that is not directly |
e82ce529 AM |
1558 | headed by table->last_line |
1559 | ||
1560 | Note: we may receive duplicate entries from 'decode_line_info'. */ | |
1561 | ||
0ee19663 NC |
1562 | if (seq |
1563 | && seq->last_line->address == address | |
a233b20c | 1564 | && seq->last_line->op_index == op_index |
0ee19663 | 1565 | && seq->last_line->end_sequence == end_sequence) |
aff90a5f L |
1566 | { |
1567 | /* We only keep the last entry with the same address and end | |
1568 | sequence. See PR ld/4986. */ | |
0ee19663 | 1569 | if (table->lcl_head == seq->last_line) |
aff90a5f | 1570 | table->lcl_head = info; |
0ee19663 NC |
1571 | info->prev_line = seq->last_line->prev_line; |
1572 | seq->last_line = info; | |
aff90a5f | 1573 | } |
0ee19663 | 1574 | else if (!seq || seq->last_line->end_sequence) |
d8d1c398 | 1575 | { |
0ee19663 NC |
1576 | /* Start a new line sequence. */ |
1577 | amt = sizeof (struct line_sequence); | |
1578 | seq = (struct line_sequence *) bfd_malloc (amt); | |
8af6b354 AM |
1579 | if (seq == NULL) |
1580 | return FALSE; | |
0ee19663 NC |
1581 | seq->low_pc = address; |
1582 | seq->prev_sequence = table->sequences; | |
1583 | seq->last_line = info; | |
1584 | table->lcl_head = info; | |
1585 | table->sequences = seq; | |
1586 | table->num_sequences++; | |
1587 | } | |
20230942 AM |
1588 | else if (info->end_sequence |
1589 | || new_line_sorts_after (info, seq->last_line)) | |
0ee19663 NC |
1590 | { |
1591 | /* Normal case: add 'info' to the beginning of the current sequence. */ | |
1592 | info->prev_line = seq->last_line; | |
1593 | seq->last_line = info; | |
e82ce529 | 1594 | |
d8d1c398 AM |
1595 | /* lcl_head: initialize to head a *possible* sequence at the end. */ |
1596 | if (!table->lcl_head) | |
1597 | table->lcl_head = info; | |
1598 | } | |
1599 | else if (!new_line_sorts_after (info, table->lcl_head) | |
1600 | && (!table->lcl_head->prev_line | |
1601 | || new_line_sorts_after (info, table->lcl_head->prev_line))) | |
1602 | { | |
1603 | /* Abnormal but easy: lcl_head is the head of 'info'. */ | |
1604 | info->prev_line = table->lcl_head->prev_line; | |
1605 | table->lcl_head->prev_line = info; | |
1606 | } | |
1607 | else | |
1608 | { | |
0ee19663 NC |
1609 | /* Abnormal and hard: Neither 'last_line' nor 'lcl_head' |
1610 | are valid heads for 'info'. Reset 'lcl_head'. */ | |
1611 | struct line_info* li2 = seq->last_line; /* Always non-NULL. */ | |
d8d1c398 | 1612 | struct line_info* li1 = li2->prev_line; |
e82ce529 | 1613 | |
d8d1c398 AM |
1614 | while (li1) |
1615 | { | |
1616 | if (!new_line_sorts_after (info, li2) | |
1617 | && new_line_sorts_after (info, li1)) | |
1618 | break; | |
e82ce529 | 1619 | |
709d67f1 | 1620 | li2 = li1; /* always non-NULL */ |
d8d1c398 AM |
1621 | li1 = li1->prev_line; |
1622 | } | |
1623 | table->lcl_head = li2; | |
1624 | info->prev_line = table->lcl_head->prev_line; | |
1625 | table->lcl_head->prev_line = info; | |
0ee19663 | 1626 | if (address < seq->low_pc) |
93ee1e36 | 1627 | seq->low_pc = address; |
d8d1c398 | 1628 | } |
8af6b354 | 1629 | return TRUE; |
252b5132 RH |
1630 | } |
1631 | ||
5ed6aba4 | 1632 | /* Extract a fully qualified filename from a line info table. |
af3ef9fe NC |
1633 | The returned string has been malloc'ed and it is the caller's |
1634 | responsibility to free it. */ | |
5ed6aba4 | 1635 | |
a092b084 | 1636 | static char * |
818a27ac | 1637 | concat_filename (struct line_info_table *table, unsigned int file) |
252b5132 | 1638 | { |
f075ee0c | 1639 | char *filename; |
159002ff | 1640 | |
6327533b | 1641 | if (table == NULL || file - 1 >= table->num_files) |
159002ff | 1642 | { |
75a657ba L |
1643 | /* FILE == 0 means unknown. */ |
1644 | if (file) | |
4eca0228 | 1645 | _bfd_error_handler |
9793eb77 | 1646 | (_("DWARF error: mangled line number section (bad file number)")); |
af3ef9fe | 1647 | return strdup ("<unknown>"); |
159002ff RH |
1648 | } |
1649 | ||
1650 | filename = table->files[file - 1].name; | |
a54018b7 AM |
1651 | if (filename == NULL) |
1652 | return strdup ("<unknown>"); | |
5ed6aba4 | 1653 | |
7421a730 | 1654 | if (!IS_ABSOLUTE_PATH (filename)) |
252b5132 | 1655 | { |
608fa8d3 JB |
1656 | char *dir_name = NULL; |
1657 | char *subdir_name = NULL; | |
7421a730 AM |
1658 | char *name; |
1659 | size_t len; | |
0dafd5f6 | 1660 | |
877a8638 | 1661 | if (table->files[file - 1].dir |
dbb3fbbb NC |
1662 | /* PR 17512: file: 0317e960. */ |
1663 | && table->files[file - 1].dir <= table->num_dirs | |
877a8638 NC |
1664 | /* PR 17512: file: 7f3d2e4b. */ |
1665 | && table->dirs != NULL) | |
608fa8d3 | 1666 | subdir_name = table->dirs[table->files[file - 1].dir - 1]; |
7421a730 | 1667 | |
608fa8d3 JB |
1668 | if (!subdir_name || !IS_ABSOLUTE_PATH (subdir_name)) |
1669 | dir_name = table->comp_dir; | |
7421a730 | 1670 | |
608fa8d3 | 1671 | if (!dir_name) |
af3ef9fe | 1672 | { |
608fa8d3 JB |
1673 | dir_name = subdir_name; |
1674 | subdir_name = NULL; | |
7421a730 | 1675 | } |
af3ef9fe | 1676 | |
608fa8d3 | 1677 | if (!dir_name) |
7421a730 AM |
1678 | return strdup (filename); |
1679 | ||
608fa8d3 | 1680 | len = strlen (dir_name) + strlen (filename) + 2; |
7421a730 | 1681 | |
608fa8d3 | 1682 | if (subdir_name) |
7421a730 | 1683 | { |
608fa8d3 | 1684 | len += strlen (subdir_name) + 1; |
a50b1753 | 1685 | name = (char *) bfd_malloc (len); |
7421a730 | 1686 | if (name) |
608fa8d3 | 1687 | sprintf (name, "%s/%s/%s", dir_name, subdir_name, filename); |
7421a730 AM |
1688 | } |
1689 | else | |
1690 | { | |
a50b1753 | 1691 | name = (char *) bfd_malloc (len); |
af3ef9fe | 1692 | if (name) |
608fa8d3 | 1693 | sprintf (name, "%s/%s", dir_name, filename); |
af3ef9fe | 1694 | } |
7421a730 AM |
1695 | |
1696 | return name; | |
252b5132 | 1697 | } |
af3ef9fe NC |
1698 | |
1699 | return strdup (filename); | |
252b5132 RH |
1700 | } |
1701 | ||
8af6b354 | 1702 | static bfd_boolean |
a2a50954 | 1703 | arange_add (const struct comp_unit *unit, struct arange *first_arange, |
8af6b354 | 1704 | bfd_vma low_pc, bfd_vma high_pc) |
f623be2b RH |
1705 | { |
1706 | struct arange *arange; | |
1707 | ||
a2a50954 AM |
1708 | /* Ignore empty ranges. */ |
1709 | if (low_pc == high_pc) | |
1710 | return TRUE; | |
1711 | ||
1712 | /* If the first arange is empty, use it. */ | |
a13afe8e FF |
1713 | if (first_arange->high == 0) |
1714 | { | |
1715 | first_arange->low = low_pc; | |
1716 | first_arange->high = high_pc; | |
8af6b354 | 1717 | return TRUE; |
a13afe8e | 1718 | } |
98591c73 | 1719 | |
a13afe8e FF |
1720 | /* Next see if we can cheaply extend an existing range. */ |
1721 | arange = first_arange; | |
f623be2b RH |
1722 | do |
1723 | { | |
1724 | if (low_pc == arange->high) | |
1725 | { | |
1726 | arange->high = high_pc; | |
8af6b354 | 1727 | return TRUE; |
f623be2b RH |
1728 | } |
1729 | if (high_pc == arange->low) | |
1730 | { | |
1731 | arange->low = low_pc; | |
8af6b354 | 1732 | return TRUE; |
f623be2b RH |
1733 | } |
1734 | arange = arange->next; | |
1735 | } | |
1736 | while (arange); | |
1737 | ||
a13afe8e | 1738 | /* Need to allocate a new arange and insert it into the arange list. |
089e3718 | 1739 | Order isn't significant, so just insert after the first arange. */ |
a2a50954 | 1740 | arange = (struct arange *) bfd_alloc (unit->abfd, sizeof (*arange)); |
8af6b354 AM |
1741 | if (arange == NULL) |
1742 | return FALSE; | |
f623be2b RH |
1743 | arange->low = low_pc; |
1744 | arange->high = high_pc; | |
a13afe8e FF |
1745 | arange->next = first_arange->next; |
1746 | first_arange->next = arange; | |
8af6b354 | 1747 | return TRUE; |
f623be2b RH |
1748 | } |
1749 | ||
0ee19663 NC |
1750 | /* Compare function for line sequences. */ |
1751 | ||
1752 | static int | |
1753 | compare_sequences (const void* a, const void* b) | |
1754 | { | |
1755 | const struct line_sequence* seq1 = a; | |
1756 | const struct line_sequence* seq2 = b; | |
1757 | ||
1758 | /* Sort by low_pc as the primary key. */ | |
1759 | if (seq1->low_pc < seq2->low_pc) | |
1760 | return -1; | |
1761 | if (seq1->low_pc > seq2->low_pc) | |
1762 | return 1; | |
1763 | ||
1764 | /* If low_pc values are equal, sort in reverse order of | |
1765 | high_pc, so that the largest region comes first. */ | |
1766 | if (seq1->last_line->address < seq2->last_line->address) | |
1767 | return 1; | |
1768 | if (seq1->last_line->address > seq2->last_line->address) | |
1769 | return -1; | |
1770 | ||
a233b20c JJ |
1771 | if (seq1->last_line->op_index < seq2->last_line->op_index) |
1772 | return 1; | |
1773 | if (seq1->last_line->op_index > seq2->last_line->op_index) | |
1774 | return -1; | |
1775 | ||
8025b055 AM |
1776 | /* num_lines is initially an index, to make the sort stable. */ |
1777 | if (seq1->num_lines < seq2->num_lines) | |
1778 | return -1; | |
1779 | if (seq1->num_lines > seq2->num_lines) | |
1780 | return 1; | |
0ee19663 NC |
1781 | return 0; |
1782 | } | |
1783 | ||
089e3718 IT |
1784 | /* Construct the line information table for quick lookup. */ |
1785 | ||
1786 | static bfd_boolean | |
1787 | build_line_info_table (struct line_info_table * table, | |
1788 | struct line_sequence * seq) | |
1789 | { | |
986f0783 AM |
1790 | size_t amt; |
1791 | struct line_info **line_info_lookup; | |
1792 | struct line_info *each_line; | |
1793 | unsigned int num_lines; | |
1794 | unsigned int line_index; | |
089e3718 IT |
1795 | |
1796 | if (seq->line_info_lookup != NULL) | |
1797 | return TRUE; | |
1798 | ||
1799 | /* Count the number of line information entries. We could do this while | |
1800 | scanning the debug information, but some entries may be added via | |
1801 | lcl_head without having a sequence handy to increment the number of | |
1802 | lines. */ | |
1803 | num_lines = 0; | |
1804 | for (each_line = seq->last_line; each_line; each_line = each_line->prev_line) | |
1805 | num_lines++; | |
1806 | ||
8025b055 | 1807 | seq->num_lines = num_lines; |
089e3718 IT |
1808 | if (num_lines == 0) |
1809 | return TRUE; | |
1810 | ||
1811 | /* Allocate space for the line information lookup table. */ | |
1812 | amt = sizeof (struct line_info*) * num_lines; | |
1813 | line_info_lookup = (struct line_info**) bfd_alloc (table->abfd, amt); | |
8025b055 | 1814 | seq->line_info_lookup = line_info_lookup; |
089e3718 IT |
1815 | if (line_info_lookup == NULL) |
1816 | return FALSE; | |
1817 | ||
1818 | /* Create the line information lookup table. */ | |
b6ddcd85 | 1819 | line_index = num_lines; |
089e3718 | 1820 | for (each_line = seq->last_line; each_line; each_line = each_line->prev_line) |
b6ddcd85 | 1821 | line_info_lookup[--line_index] = each_line; |
089e3718 | 1822 | |
b6ddcd85 | 1823 | BFD_ASSERT (line_index == 0); |
089e3718 IT |
1824 | return TRUE; |
1825 | } | |
1826 | ||
0ee19663 NC |
1827 | /* Sort the line sequences for quick lookup. */ |
1828 | ||
8af6b354 | 1829 | static bfd_boolean |
0ee19663 NC |
1830 | sort_line_sequences (struct line_info_table* table) |
1831 | { | |
986f0783 AM |
1832 | size_t amt; |
1833 | struct line_sequence *sequences; | |
1834 | struct line_sequence *seq; | |
1835 | unsigned int n = 0; | |
1836 | unsigned int num_sequences = table->num_sequences; | |
1837 | bfd_vma last_high_pc; | |
0ee19663 NC |
1838 | |
1839 | if (num_sequences == 0) | |
8af6b354 | 1840 | return TRUE; |
0ee19663 NC |
1841 | |
1842 | /* Allocate space for an array of sequences. */ | |
1843 | amt = sizeof (struct line_sequence) * num_sequences; | |
1844 | sequences = (struct line_sequence *) bfd_alloc (table->abfd, amt); | |
8af6b354 AM |
1845 | if (sequences == NULL) |
1846 | return FALSE; | |
0ee19663 NC |
1847 | |
1848 | /* Copy the linked list into the array, freeing the original nodes. */ | |
1849 | seq = table->sequences; | |
1850 | for (n = 0; n < num_sequences; n++) | |
1851 | { | |
1852 | struct line_sequence* last_seq = seq; | |
1853 | ||
1854 | BFD_ASSERT (seq); | |
1855 | sequences[n].low_pc = seq->low_pc; | |
1856 | sequences[n].prev_sequence = NULL; | |
1857 | sequences[n].last_line = seq->last_line; | |
089e3718 | 1858 | sequences[n].line_info_lookup = NULL; |
8025b055 | 1859 | sequences[n].num_lines = n; |
0ee19663 NC |
1860 | seq = seq->prev_sequence; |
1861 | free (last_seq); | |
1862 | } | |
1863 | BFD_ASSERT (seq == NULL); | |
1864 | ||
1865 | qsort (sequences, n, sizeof (struct line_sequence), compare_sequences); | |
1866 | ||
1867 | /* Make the list binary-searchable by trimming overlapping entries | |
1868 | and removing nested entries. */ | |
1869 | num_sequences = 1; | |
1870 | last_high_pc = sequences[0].last_line->address; | |
1871 | for (n = 1; n < table->num_sequences; n++) | |
1872 | { | |
1873 | if (sequences[n].low_pc < last_high_pc) | |
93ee1e36 | 1874 | { |
0ee19663 NC |
1875 | if (sequences[n].last_line->address <= last_high_pc) |
1876 | /* Skip nested entries. */ | |
1877 | continue; | |
1878 | ||
1879 | /* Trim overlapping entries. */ | |
1880 | sequences[n].low_pc = last_high_pc; | |
93ee1e36 | 1881 | } |
0ee19663 NC |
1882 | last_high_pc = sequences[n].last_line->address; |
1883 | if (n > num_sequences) | |
93ee1e36 AM |
1884 | { |
1885 | /* Close up the gap. */ | |
1886 | sequences[num_sequences].low_pc = sequences[n].low_pc; | |
1887 | sequences[num_sequences].last_line = sequences[n].last_line; | |
1888 | } | |
0ee19663 NC |
1889 | num_sequences++; |
1890 | } | |
1891 | ||
1892 | table->sequences = sequences; | |
1893 | table->num_sequences = num_sequences; | |
8af6b354 | 1894 | return TRUE; |
0ee19663 NC |
1895 | } |
1896 | ||
0041f7df JK |
1897 | /* Add directory to TABLE. CUR_DIR memory ownership is taken by TABLE. */ |
1898 | ||
1899 | static bfd_boolean | |
1900 | line_info_add_include_dir (struct line_info_table *table, char *cur_dir) | |
1901 | { | |
1902 | if ((table->num_dirs % DIR_ALLOC_CHUNK) == 0) | |
1903 | { | |
1904 | char **tmp; | |
986f0783 | 1905 | size_t amt; |
0041f7df JK |
1906 | |
1907 | amt = table->num_dirs + DIR_ALLOC_CHUNK; | |
1908 | amt *= sizeof (char *); | |
1909 | ||
1910 | tmp = (char **) bfd_realloc (table->dirs, amt); | |
1911 | if (tmp == NULL) | |
1912 | return FALSE; | |
1913 | table->dirs = tmp; | |
1914 | } | |
1915 | ||
1916 | table->dirs[table->num_dirs++] = cur_dir; | |
1917 | return TRUE; | |
1918 | } | |
1919 | ||
1920 | static bfd_boolean | |
1921 | line_info_add_include_dir_stub (struct line_info_table *table, char *cur_dir, | |
1922 | unsigned int dir ATTRIBUTE_UNUSED, | |
1d827a72 | 1923 | unsigned int xtime ATTRIBUTE_UNUSED, |
0041f7df JK |
1924 | unsigned int size ATTRIBUTE_UNUSED) |
1925 | { | |
1926 | return line_info_add_include_dir (table, cur_dir); | |
1927 | } | |
1928 | ||
1929 | /* Add file to TABLE. CUR_FILE memory ownership is taken by TABLE. */ | |
1930 | ||
1931 | static bfd_boolean | |
1932 | line_info_add_file_name (struct line_info_table *table, char *cur_file, | |
1d827a72 L |
1933 | unsigned int dir, unsigned int xtime, |
1934 | unsigned int size) | |
0041f7df JK |
1935 | { |
1936 | if ((table->num_files % FILE_ALLOC_CHUNK) == 0) | |
1937 | { | |
1938 | struct fileinfo *tmp; | |
986f0783 | 1939 | size_t amt; |
0041f7df JK |
1940 | |
1941 | amt = table->num_files + FILE_ALLOC_CHUNK; | |
1942 | amt *= sizeof (struct fileinfo); | |
1943 | ||
1944 | tmp = (struct fileinfo *) bfd_realloc (table->files, amt); | |
1945 | if (tmp == NULL) | |
1946 | return FALSE; | |
1947 | table->files = tmp; | |
1948 | } | |
1949 | ||
1950 | table->files[table->num_files].name = cur_file; | |
1951 | table->files[table->num_files].dir = dir; | |
1d827a72 | 1952 | table->files[table->num_files].time = xtime; |
0041f7df JK |
1953 | table->files[table->num_files].size = size; |
1954 | table->num_files++; | |
1955 | return TRUE; | |
1956 | } | |
1957 | ||
1958 | /* Read directory or file name entry format, starting with byte of | |
1959 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
1960 | entries count and the entries themselves in the described entry | |
1961 | format. */ | |
1962 | ||
1963 | static bfd_boolean | |
1964 | read_formatted_entries (struct comp_unit *unit, bfd_byte **bufp, | |
1965 | bfd_byte *buf_end, struct line_info_table *table, | |
1966 | bfd_boolean (*callback) (struct line_info_table *table, | |
1967 | char *cur_file, | |
1968 | unsigned int dir, | |
1969 | unsigned int time, | |
1970 | unsigned int size)) | |
1971 | { | |
1972 | bfd *abfd = unit->abfd; | |
1973 | bfd_byte format_count, formati; | |
1974 | bfd_vma data_count, datai; | |
1975 | bfd_byte *buf = *bufp; | |
1976 | bfd_byte *format_header_data; | |
1977 | unsigned int bytes_read; | |
1978 | ||
1979 | format_count = read_1_byte (abfd, buf, buf_end); | |
1980 | buf += 1; | |
1981 | format_header_data = buf; | |
1982 | for (formati = 0; formati < format_count; formati++) | |
1983 | { | |
1984 | _bfd_safe_read_leb128 (abfd, buf, &bytes_read, FALSE, buf_end); | |
1985 | buf += bytes_read; | |
1986 | _bfd_safe_read_leb128 (abfd, buf, &bytes_read, FALSE, buf_end); | |
1987 | buf += bytes_read; | |
1988 | } | |
1989 | ||
1990 | data_count = _bfd_safe_read_leb128 (abfd, buf, &bytes_read, FALSE, buf_end); | |
1991 | buf += bytes_read; | |
c361faae AM |
1992 | if (format_count == 0 && data_count != 0) |
1993 | { | |
9793eb77 | 1994 | _bfd_error_handler (_("DWARF error: zero format count")); |
c361faae AM |
1995 | bfd_set_error (bfd_error_bad_value); |
1996 | return FALSE; | |
1997 | } | |
1998 | ||
30d0157a NC |
1999 | /* PR 22210. Paranoia check. Don't bother running the loop |
2000 | if we know that we are going to run out of buffer. */ | |
2001 | if (data_count > (bfd_vma) (buf_end - buf)) | |
2002 | { | |
2dcf00ce | 2003 | _bfd_error_handler |
9793eb77 | 2004 | (_("DWARF error: data count (%" PRIx64 ") larger than buffer size"), |
2dcf00ce | 2005 | (uint64_t) data_count); |
30d0157a NC |
2006 | bfd_set_error (bfd_error_bad_value); |
2007 | return FALSE; | |
2008 | } | |
2009 | ||
0041f7df JK |
2010 | for (datai = 0; datai < data_count; datai++) |
2011 | { | |
2012 | bfd_byte *format = format_header_data; | |
2013 | struct fileinfo fe; | |
2014 | ||
a54018b7 | 2015 | memset (&fe, 0, sizeof fe); |
0041f7df JK |
2016 | for (formati = 0; formati < format_count; formati++) |
2017 | { | |
2018 | bfd_vma content_type, form; | |
2019 | char *string_trash; | |
2020 | char **stringp = &string_trash; | |
2021 | unsigned int uint_trash, *uintp = &uint_trash; | |
33e0a9a0 | 2022 | struct attribute attr; |
0041f7df JK |
2023 | |
2024 | content_type = _bfd_safe_read_leb128 (abfd, format, &bytes_read, | |
2025 | FALSE, buf_end); | |
2026 | format += bytes_read; | |
2027 | switch (content_type) | |
2028 | { | |
2029 | case DW_LNCT_path: | |
2030 | stringp = &fe.name; | |
2031 | break; | |
2032 | case DW_LNCT_directory_index: | |
2033 | uintp = &fe.dir; | |
2034 | break; | |
2035 | case DW_LNCT_timestamp: | |
2036 | uintp = &fe.time; | |
2037 | break; | |
2038 | case DW_LNCT_size: | |
2039 | uintp = &fe.size; | |
2040 | break; | |
2041 | case DW_LNCT_MD5: | |
2042 | break; | |
2043 | default: | |
2044 | _bfd_error_handler | |
9793eb77 | 2045 | (_("DWARF error: unknown format content type %" PRIu64), |
2dcf00ce | 2046 | (uint64_t) content_type); |
0041f7df JK |
2047 | bfd_set_error (bfd_error_bad_value); |
2048 | return FALSE; | |
2049 | } | |
2050 | ||
2051 | form = _bfd_safe_read_leb128 (abfd, format, &bytes_read, FALSE, | |
2052 | buf_end); | |
2053 | format += bytes_read; | |
33e0a9a0 AM |
2054 | |
2055 | buf = read_attribute_value (&attr, form, 0, unit, buf, buf_end); | |
2056 | if (buf == NULL) | |
2057 | return FALSE; | |
0041f7df JK |
2058 | switch (form) |
2059 | { | |
2060 | case DW_FORM_string: | |
0041f7df | 2061 | case DW_FORM_line_strp: |
33e0a9a0 | 2062 | *stringp = attr.u.str; |
0041f7df JK |
2063 | break; |
2064 | ||
2065 | case DW_FORM_data1: | |
0041f7df | 2066 | case DW_FORM_data2: |
0041f7df | 2067 | case DW_FORM_data4: |
0041f7df | 2068 | case DW_FORM_data8: |
0041f7df | 2069 | case DW_FORM_udata: |
33e0a9a0 | 2070 | *uintp = attr.u.val; |
0041f7df JK |
2071 | break; |
2072 | } | |
2073 | } | |
2074 | ||
2075 | if (!callback (table, fe.name, fe.dir, fe.time, fe.size)) | |
2076 | return FALSE; | |
2077 | } | |
2078 | ||
2079 | *bufp = buf; | |
2080 | return TRUE; | |
2081 | } | |
2082 | ||
34b5e0b2 | 2083 | /* Decode the line number information for UNIT. */ |
252b5132 | 2084 | |
34b5e0b2 | 2085 | static struct line_info_table* |
99b06c60 | 2086 | decode_line_info (struct comp_unit *unit) |
252b5132 RH |
2087 | { |
2088 | bfd *abfd = unit->abfd; | |
99b06c60 AM |
2089 | struct dwarf2_debug *stash = unit->stash; |
2090 | struct dwarf2_debug_file *file = unit->file; | |
252b5132 | 2091 | struct line_info_table* table; |
f075ee0c AM |
2092 | bfd_byte *line_ptr; |
2093 | bfd_byte *line_end; | |
252b5132 | 2094 | struct line_head lh; |
d03ba2a1 | 2095 | unsigned int i, bytes_read, offset_size; |
252b5132 RH |
2096 | char *cur_file, *cur_dir; |
2097 | unsigned char op_code, extended_op, adj_opcode; | |
fec16237 | 2098 | unsigned int exop_len; |
986f0783 | 2099 | size_t amt; |
252b5132 | 2100 | |
e63ef095 AM |
2101 | if (unit->line_offset == 0 && file->line_table) |
2102 | return file->line_table; | |
2103 | ||
fc28f9aa | 2104 | if (! read_section (abfd, &stash->debug_sections[debug_line], |
99b06c60 AM |
2105 | file->syms, unit->line_offset, |
2106 | &file->dwarf_line_buffer, &file->dwarf_line_size)) | |
8af6b354 | 2107 | return NULL; |
ccdb16fc | 2108 | |
99b06c60 | 2109 | if (file->dwarf_line_size < 16) |
dbb3fbbb | 2110 | { |
4eca0228 | 2111 | _bfd_error_handler |
9793eb77 | 2112 | (_("DWARF error: line info section is too small (%" PRId64 ")"), |
99b06c60 | 2113 | (int64_t) file->dwarf_line_size); |
dbb3fbbb NC |
2114 | bfd_set_error (bfd_error_bad_value); |
2115 | return NULL; | |
2116 | } | |
99b06c60 AM |
2117 | line_ptr = file->dwarf_line_buffer + unit->line_offset; |
2118 | line_end = file->dwarf_line_buffer + file->dwarf_line_size; | |
252b5132 | 2119 | |
a092b084 | 2120 | /* Read in the prologue. */ |
dbb3fbbb | 2121 | lh.total_length = read_4_bytes (abfd, line_ptr, line_end); |
91a4d569 AM |
2122 | line_ptr += 4; |
2123 | offset_size = 4; | |
2124 | if (lh.total_length == 0xffffffff) | |
dae2dd0d | 2125 | { |
dbb3fbbb | 2126 | lh.total_length = read_8_bytes (abfd, line_ptr, line_end); |
dae2dd0d NC |
2127 | line_ptr += 8; |
2128 | offset_size = 8; | |
2129 | } | |
91a4d569 | 2130 | else if (lh.total_length == 0 && unit->addr_size == 8) |
d03ba2a1 | 2131 | { |
91a4d569 | 2132 | /* Handle (non-standard) 64-bit DWARF2 formats. */ |
dbb3fbbb | 2133 | lh.total_length = read_4_bytes (abfd, line_ptr, line_end); |
91a4d569 | 2134 | line_ptr += 4; |
d03ba2a1 JJ |
2135 | offset_size = 8; |
2136 | } | |
dbb3fbbb | 2137 | |
515f23e6 | 2138 | if (lh.total_length > (size_t) (line_end - line_ptr)) |
dbb3fbbb | 2139 | { |
4eca0228 | 2140 | _bfd_error_handler |
695344c0 | 2141 | /* xgettext: c-format */ |
9793eb77 | 2142 | (_("DWARF error: line info data is bigger (%#" PRIx64 ")" |
515f23e6 | 2143 | " than the space remaining in the section (%#lx)"), |
2dcf00ce | 2144 | (uint64_t) lh.total_length, (unsigned long) (line_end - line_ptr)); |
dbb3fbbb NC |
2145 | bfd_set_error (bfd_error_bad_value); |
2146 | return NULL; | |
2147 | } | |
62f8d217 | 2148 | |
252b5132 | 2149 | line_end = line_ptr + lh.total_length; |
62f8d217 | 2150 | |
dbb3fbbb | 2151 | lh.version = read_2_bytes (abfd, line_ptr, line_end); |
0041f7df | 2152 | if (lh.version < 2 || lh.version > 5) |
a233b20c | 2153 | { |
4eca0228 | 2154 | _bfd_error_handler |
9793eb77 | 2155 | (_("DWARF error: unhandled .debug_line version %d"), lh.version); |
a233b20c JJ |
2156 | bfd_set_error (bfd_error_bad_value); |
2157 | return NULL; | |
2158 | } | |
252b5132 | 2159 | line_ptr += 2; |
dbb3fbbb | 2160 | |
0041f7df JK |
2161 | if (line_ptr + offset_size + (lh.version >= 5 ? 8 : (lh.version >= 4 ? 6 : 5)) |
2162 | >= line_end) | |
dbb3fbbb | 2163 | { |
4eca0228 | 2164 | _bfd_error_handler |
9793eb77 | 2165 | (_("DWARF error: ran out of room reading prologue")); |
dbb3fbbb NC |
2166 | bfd_set_error (bfd_error_bad_value); |
2167 | return NULL; | |
2168 | } | |
2169 | ||
0041f7df JK |
2170 | if (lh.version >= 5) |
2171 | { | |
2172 | unsigned int segment_selector_size; | |
2173 | ||
2174 | /* Skip address size. */ | |
2175 | read_1_byte (abfd, line_ptr, line_end); | |
2176 | line_ptr += 1; | |
2177 | ||
2178 | segment_selector_size = read_1_byte (abfd, line_ptr, line_end); | |
2179 | line_ptr += 1; | |
2180 | if (segment_selector_size != 0) | |
2181 | { | |
2182 | _bfd_error_handler | |
9793eb77 | 2183 | (_("DWARF error: line info unsupported segment selector size %u"), |
0041f7df JK |
2184 | segment_selector_size); |
2185 | bfd_set_error (bfd_error_bad_value); | |
2186 | return NULL; | |
2187 | } | |
2188 | } | |
2189 | ||
d03ba2a1 | 2190 | if (offset_size == 4) |
dbb3fbbb | 2191 | lh.prologue_length = read_4_bytes (abfd, line_ptr, line_end); |
d03ba2a1 | 2192 | else |
dbb3fbbb | 2193 | lh.prologue_length = read_8_bytes (abfd, line_ptr, line_end); |
d03ba2a1 | 2194 | line_ptr += offset_size; |
dbb3fbbb NC |
2195 | |
2196 | lh.minimum_instruction_length = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2197 | line_ptr += 1; |
dbb3fbbb | 2198 | |
a233b20c JJ |
2199 | if (lh.version >= 4) |
2200 | { | |
dbb3fbbb | 2201 | lh.maximum_ops_per_insn = read_1_byte (abfd, line_ptr, line_end); |
a233b20c JJ |
2202 | line_ptr += 1; |
2203 | } | |
2204 | else | |
2205 | lh.maximum_ops_per_insn = 1; | |
dbb3fbbb | 2206 | |
a233b20c JJ |
2207 | if (lh.maximum_ops_per_insn == 0) |
2208 | { | |
4eca0228 | 2209 | _bfd_error_handler |
9793eb77 | 2210 | (_("DWARF error: invalid maximum operations per instruction")); |
a233b20c JJ |
2211 | bfd_set_error (bfd_error_bad_value); |
2212 | return NULL; | |
2213 | } | |
dbb3fbbb NC |
2214 | |
2215 | lh.default_is_stmt = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2216 | line_ptr += 1; |
dbb3fbbb NC |
2217 | |
2218 | lh.line_base = read_1_signed_byte (abfd, line_ptr, line_end); | |
252b5132 | 2219 | line_ptr += 1; |
dbb3fbbb NC |
2220 | |
2221 | lh.line_range = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2222 | line_ptr += 1; |
dbb3fbbb NC |
2223 | |
2224 | lh.opcode_base = read_1_byte (abfd, line_ptr, line_end); | |
252b5132 | 2225 | line_ptr += 1; |
dbb3fbbb NC |
2226 | |
2227 | if (line_ptr + (lh.opcode_base - 1) >= line_end) | |
2228 | { | |
9793eb77 | 2229 | _bfd_error_handler (_("DWARF error: ran out of room reading opcodes")); |
dbb3fbbb NC |
2230 | bfd_set_error (bfd_error_bad_value); |
2231 | return NULL; | |
2232 | } | |
62f8d217 | 2233 | |
dc810e39 | 2234 | amt = lh.opcode_base * sizeof (unsigned char); |
a50b1753 | 2235 | lh.standard_opcode_lengths = (unsigned char *) bfd_alloc (abfd, amt); |
252b5132 RH |
2236 | |
2237 | lh.standard_opcode_lengths[0] = 1; | |
98591c73 | 2238 | |
252b5132 RH |
2239 | for (i = 1; i < lh.opcode_base; ++i) |
2240 | { | |
dbb3fbbb | 2241 | lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr, line_end); |
252b5132 RH |
2242 | line_ptr += 1; |
2243 | } | |
2244 | ||
e63ef095 AM |
2245 | amt = sizeof (struct line_info_table); |
2246 | table = (struct line_info_table *) bfd_alloc (abfd, amt); | |
2247 | if (table == NULL) | |
2248 | return NULL; | |
2249 | table->abfd = abfd; | |
2250 | table->comp_dir = unit->comp_dir; | |
2251 | ||
2252 | table->num_files = 0; | |
2253 | table->files = NULL; | |
2254 | ||
2255 | table->num_dirs = 0; | |
2256 | table->dirs = NULL; | |
2257 | ||
2258 | table->num_sequences = 0; | |
2259 | table->sequences = NULL; | |
2260 | ||
2261 | table->lcl_head = NULL; | |
2262 | ||
0041f7df | 2263 | if (lh.version >= 5) |
252b5132 | 2264 | { |
0041f7df JK |
2265 | /* Read directory table. */ |
2266 | if (!read_formatted_entries (unit, &line_ptr, line_end, table, | |
2267 | line_info_add_include_dir_stub)) | |
2268 | goto fail; | |
98591c73 | 2269 | |
0041f7df JK |
2270 | /* Read file name table. */ |
2271 | if (!read_formatted_entries (unit, &line_ptr, line_end, table, | |
2272 | line_info_add_file_name)) | |
2273 | goto fail; | |
2274 | } | |
2275 | else | |
2276 | { | |
2277 | /* Read directory table. */ | |
2278 | while ((cur_dir = read_string (abfd, line_ptr, line_end, &bytes_read)) != NULL) | |
252b5132 | 2279 | { |
0041f7df | 2280 | line_ptr += bytes_read; |
35330cce | 2281 | |
0041f7df | 2282 | if (!line_info_add_include_dir (table, cur_dir)) |
8af6b354 | 2283 | goto fail; |
252b5132 | 2284 | } |
98591c73 | 2285 | |
252b5132 | 2286 | line_ptr += bytes_read; |
98591c73 | 2287 | |
0041f7df JK |
2288 | /* Read file name table. */ |
2289 | while ((cur_file = read_string (abfd, line_ptr, line_end, &bytes_read)) != NULL) | |
252b5132 | 2290 | { |
1d827a72 | 2291 | unsigned int dir, xtime, size; |
0041f7df JK |
2292 | |
2293 | line_ptr += bytes_read; | |
35330cce | 2294 | |
0041f7df JK |
2295 | dir = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, FALSE, line_end); |
2296 | line_ptr += bytes_read; | |
1d827a72 | 2297 | xtime = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, FALSE, line_end); |
0041f7df JK |
2298 | line_ptr += bytes_read; |
2299 | size = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, FALSE, line_end); | |
2300 | line_ptr += bytes_read; | |
35330cce | 2301 | |
1d827a72 | 2302 | if (!line_info_add_file_name (table, cur_file, dir, xtime, size)) |
8af6b354 | 2303 | goto fail; |
252b5132 | 2304 | } |
98591c73 | 2305 | |
252b5132 | 2306 | line_ptr += bytes_read; |
252b5132 | 2307 | } |
98591c73 | 2308 | |
252b5132 RH |
2309 | /* Read the statement sequences until there's nothing left. */ |
2310 | while (line_ptr < line_end) | |
2311 | { | |
a092b084 | 2312 | /* State machine registers. */ |
252b5132 | 2313 | bfd_vma address = 0; |
a233b20c | 2314 | unsigned char op_index = 0; |
8bfd78b3 | 2315 | char * filename = table->num_files ? concat_filename (table, 1) : NULL; |
252b5132 RH |
2316 | unsigned int line = 1; |
2317 | unsigned int column = 0; | |
9b8d1a36 | 2318 | unsigned int discriminator = 0; |
252b5132 | 2319 | int is_stmt = lh.default_is_stmt; |
e2f6d277 | 2320 | int end_sequence = 0; |
a54018b7 | 2321 | unsigned int dir, xtime, size; |
e2f6d277 | 2322 | /* eraxxon@alumni.rice.edu: Against the DWARF2 specs, some |
e82ce529 AM |
2323 | compilers generate address sequences that are wildly out of |
2324 | order using DW_LNE_set_address (e.g. Intel C++ 6.0 compiler | |
2325 | for ia64-Linux). Thus, to determine the low and high | |
2326 | address, we must compare on every DW_LNS_copy, etc. */ | |
75758e9d | 2327 | bfd_vma low_pc = (bfd_vma) -1; |
e2f6d277 | 2328 | bfd_vma high_pc = 0; |
252b5132 | 2329 | |
a092b084 | 2330 | /* Decode the table. */ |
e338894d | 2331 | while (!end_sequence && line_ptr < line_end) |
252b5132 | 2332 | { |
dbb3fbbb | 2333 | op_code = read_1_byte (abfd, line_ptr, line_end); |
252b5132 | 2334 | line_ptr += 1; |
98591c73 | 2335 | |
1a509dcc | 2336 | if (op_code >= lh.opcode_base) |
e2f6d277 NC |
2337 | { |
2338 | /* Special operand. */ | |
1a509dcc | 2339 | adj_opcode = op_code - lh.opcode_base; |
dbb3fbbb NC |
2340 | if (lh.line_range == 0) |
2341 | goto line_fail; | |
a233b20c | 2342 | if (lh.maximum_ops_per_insn == 1) |
a2a50954 AM |
2343 | address += (adj_opcode / lh.line_range |
2344 | * lh.minimum_instruction_length); | |
a233b20c JJ |
2345 | else |
2346 | { | |
a2a50954 AM |
2347 | address += ((op_index + adj_opcode / lh.line_range) |
2348 | / lh.maximum_ops_per_insn | |
2349 | * lh.minimum_instruction_length); | |
2350 | op_index = ((op_index + adj_opcode / lh.line_range) | |
2351 | % lh.maximum_ops_per_insn); | |
a233b20c | 2352 | } |
1a509dcc GK |
2353 | line += lh.line_base + (adj_opcode % lh.line_range); |
2354 | /* Append row to matrix using current values. */ | |
a233b20c | 2355 | if (!add_line_info (table, address, op_index, filename, |
9b8d1a36 | 2356 | line, column, discriminator, 0)) |
8af6b354 | 2357 | goto line_fail; |
93ee1e36 | 2358 | discriminator = 0; |
75758e9d AM |
2359 | if (address < low_pc) |
2360 | low_pc = address; | |
e2f6d277 NC |
2361 | if (address > high_pc) |
2362 | high_pc = address; | |
1a509dcc GK |
2363 | } |
2364 | else switch (op_code) | |
252b5132 RH |
2365 | { |
2366 | case DW_LNS_extended_op: | |
4265548c PA |
2367 | exop_len = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2368 | FALSE, line_end); | |
fec16237 | 2369 | line_ptr += bytes_read; |
dbb3fbbb | 2370 | extended_op = read_1_byte (abfd, line_ptr, line_end); |
252b5132 | 2371 | line_ptr += 1; |
e2f6d277 | 2372 | |
252b5132 RH |
2373 | switch (extended_op) |
2374 | { | |
2375 | case DW_LNE_end_sequence: | |
2376 | end_sequence = 1; | |
9b8d1a36 CC |
2377 | if (!add_line_info (table, address, op_index, filename, line, |
2378 | column, discriminator, end_sequence)) | |
8af6b354 | 2379 | goto line_fail; |
93ee1e36 | 2380 | discriminator = 0; |
75758e9d AM |
2381 | if (address < low_pc) |
2382 | low_pc = address; | |
e2f6d277 NC |
2383 | if (address > high_pc) |
2384 | high_pc = address; | |
a2a50954 | 2385 | if (!arange_add (unit, &unit->arange, low_pc, high_pc)) |
8af6b354 | 2386 | goto line_fail; |
252b5132 RH |
2387 | break; |
2388 | case DW_LNE_set_address: | |
dbb3fbbb | 2389 | address = read_address (unit, line_ptr, line_end); |
a233b20c | 2390 | op_index = 0; |
252b5132 RH |
2391 | line_ptr += unit->addr_size; |
2392 | break; | |
2393 | case DW_LNE_define_file: | |
dbb3fbbb | 2394 | cur_file = read_string (abfd, line_ptr, line_end, &bytes_read); |
252b5132 | 2395 | line_ptr += bytes_read; |
a54018b7 AM |
2396 | dir = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2397 | FALSE, line_end); | |
252b5132 | 2398 | line_ptr += bytes_read; |
a54018b7 AM |
2399 | xtime = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2400 | FALSE, line_end); | |
252b5132 | 2401 | line_ptr += bytes_read; |
a54018b7 AM |
2402 | size = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2403 | FALSE, line_end); | |
252b5132 | 2404 | line_ptr += bytes_read; |
a54018b7 AM |
2405 | if (!line_info_add_file_name (table, cur_file, dir, |
2406 | xtime, size)) | |
2407 | goto line_fail; | |
252b5132 | 2408 | break; |
9e1f7c0e | 2409 | case DW_LNE_set_discriminator: |
9b8d1a36 | 2410 | discriminator = |
4265548c PA |
2411 | _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2412 | FALSE, line_end); | |
9e1f7c0e DK |
2413 | line_ptr += bytes_read; |
2414 | break; | |
a2a50954 AM |
2415 | case DW_LNE_HP_source_file_correlation: |
2416 | line_ptr += exop_len - 1; | |
2417 | break; | |
252b5132 | 2418 | default: |
4eca0228 | 2419 | _bfd_error_handler |
9793eb77 | 2420 | (_("DWARF error: mangled line number section")); |
252b5132 | 2421 | bfd_set_error (bfd_error_bad_value); |
8af6b354 | 2422 | line_fail: |
c9594989 | 2423 | free (filename); |
8af6b354 | 2424 | goto fail; |
252b5132 RH |
2425 | } |
2426 | break; | |
2427 | case DW_LNS_copy: | |
a233b20c | 2428 | if (!add_line_info (table, address, op_index, |
9b8d1a36 | 2429 | filename, line, column, discriminator, 0)) |
8af6b354 | 2430 | goto line_fail; |
93ee1e36 | 2431 | discriminator = 0; |
75758e9d AM |
2432 | if (address < low_pc) |
2433 | low_pc = address; | |
e2f6d277 NC |
2434 | if (address > high_pc) |
2435 | high_pc = address; | |
252b5132 RH |
2436 | break; |
2437 | case DW_LNS_advance_pc: | |
a233b20c | 2438 | if (lh.maximum_ops_per_insn == 1) |
a2a50954 | 2439 | address += (lh.minimum_instruction_length |
4265548c PA |
2440 | * _bfd_safe_read_leb128 (abfd, line_ptr, |
2441 | &bytes_read, | |
2442 | FALSE, line_end)); | |
a233b20c JJ |
2443 | else |
2444 | { | |
4265548c PA |
2445 | bfd_vma adjust = _bfd_safe_read_leb128 (abfd, line_ptr, |
2446 | &bytes_read, | |
2447 | FALSE, line_end); | |
a2a50954 AM |
2448 | address = ((op_index + adjust) / lh.maximum_ops_per_insn |
2449 | * lh.minimum_instruction_length); | |
a233b20c JJ |
2450 | op_index = (op_index + adjust) % lh.maximum_ops_per_insn; |
2451 | } | |
252b5132 RH |
2452 | line_ptr += bytes_read; |
2453 | break; | |
2454 | case DW_LNS_advance_line: | |
4265548c PA |
2455 | line += _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2456 | TRUE, line_end); | |
252b5132 RH |
2457 | line_ptr += bytes_read; |
2458 | break; | |
2459 | case DW_LNS_set_file: | |
2460 | { | |
99b06c60 | 2461 | unsigned int filenum; |
252b5132 | 2462 | |
e2f6d277 NC |
2463 | /* The file and directory tables are 0 |
2464 | based, the references are 1 based. */ | |
99b06c60 AM |
2465 | filenum = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2466 | FALSE, line_end); | |
252b5132 | 2467 | line_ptr += bytes_read; |
c9594989 | 2468 | free (filename); |
99b06c60 | 2469 | filename = concat_filename (table, filenum); |
252b5132 RH |
2470 | break; |
2471 | } | |
2472 | case DW_LNS_set_column: | |
4265548c PA |
2473 | column = _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2474 | FALSE, line_end); | |
252b5132 RH |
2475 | line_ptr += bytes_read; |
2476 | break; | |
2477 | case DW_LNS_negate_stmt: | |
2478 | is_stmt = (!is_stmt); | |
2479 | break; | |
2480 | case DW_LNS_set_basic_block: | |
252b5132 RH |
2481 | break; |
2482 | case DW_LNS_const_add_pc: | |
d8010d3e AM |
2483 | if (lh.line_range == 0) |
2484 | goto line_fail; | |
a233b20c | 2485 | if (lh.maximum_ops_per_insn == 1) |
a2a50954 AM |
2486 | address += (lh.minimum_instruction_length |
2487 | * ((255 - lh.opcode_base) / lh.line_range)); | |
a233b20c JJ |
2488 | else |
2489 | { | |
2490 | bfd_vma adjust = ((255 - lh.opcode_base) / lh.line_range); | |
a2a50954 AM |
2491 | address += (lh.minimum_instruction_length |
2492 | * ((op_index + adjust) | |
2493 | / lh.maximum_ops_per_insn)); | |
a233b20c JJ |
2494 | op_index = (op_index + adjust) % lh.maximum_ops_per_insn; |
2495 | } | |
252b5132 RH |
2496 | break; |
2497 | case DW_LNS_fixed_advance_pc: | |
dbb3fbbb | 2498 | address += read_2_bytes (abfd, line_ptr, line_end); |
a233b20c | 2499 | op_index = 0; |
252b5132 RH |
2500 | line_ptr += 2; |
2501 | break; | |
1a509dcc | 2502 | default: |
91d6fa6a NC |
2503 | /* Unknown standard opcode, ignore it. */ |
2504 | for (i = 0; i < lh.standard_opcode_lengths[op_code]; i++) | |
2505 | { | |
4265548c PA |
2506 | (void) _bfd_safe_read_leb128 (abfd, line_ptr, &bytes_read, |
2507 | FALSE, line_end); | |
91d6fa6a NC |
2508 | line_ptr += bytes_read; |
2509 | } | |
2510 | break; | |
252b5132 RH |
2511 | } |
2512 | } | |
5ed6aba4 | 2513 | |
c9594989 | 2514 | free (filename); |
252b5132 RH |
2515 | } |
2516 | ||
e63ef095 AM |
2517 | if (unit->line_offset == 0) |
2518 | file->line_table = table; | |
8af6b354 AM |
2519 | if (sort_line_sequences (table)) |
2520 | return table; | |
0ee19663 | 2521 | |
8af6b354 | 2522 | fail: |
a26a013f AM |
2523 | while (table->sequences != NULL) |
2524 | { | |
2525 | struct line_sequence* seq = table->sequences; | |
2526 | table->sequences = table->sequences->prev_sequence; | |
2527 | free (seq); | |
2528 | } | |
c9594989 AM |
2529 | free (table->files); |
2530 | free (table->dirs); | |
8af6b354 | 2531 | return NULL; |
252b5132 RH |
2532 | } |
2533 | ||
240d6706 NC |
2534 | /* If ADDR is within TABLE set the output parameters and return the |
2535 | range of addresses covered by the entry used to fill them out. | |
2536 | Otherwise set * FILENAME_PTR to NULL and return 0. | |
2537 | The parameters FILENAME_PTR, LINENUMBER_PTR and DISCRIMINATOR_PTR | |
2538 | are pointers to the objects to be filled in. */ | |
252b5132 | 2539 | |
240d6706 | 2540 | static bfd_vma |
818a27ac AM |
2541 | lookup_address_in_line_info_table (struct line_info_table *table, |
2542 | bfd_vma addr, | |
818a27ac | 2543 | const char **filename_ptr, |
9b8d1a36 CC |
2544 | unsigned int *linenumber_ptr, |
2545 | unsigned int *discriminator_ptr) | |
252b5132 | 2546 | { |
0ee19663 | 2547 | struct line_sequence *seq = NULL; |
089e3718 | 2548 | struct line_info *info; |
0ee19663 | 2549 | int low, high, mid; |
e82ce529 | 2550 | |
0ee19663 NC |
2551 | /* Binary search the array of sequences. */ |
2552 | low = 0; | |
2553 | high = table->num_sequences; | |
2554 | while (low < high) | |
2555 | { | |
2556 | mid = (low + high) / 2; | |
2557 | seq = &table->sequences[mid]; | |
2558 | if (addr < seq->low_pc) | |
2559 | high = mid; | |
2560 | else if (addr >= seq->last_line->address) | |
2561 | low = mid + 1; | |
2562 | else | |
2563 | break; | |
2564 | } | |
98591c73 | 2565 | |
089e3718 IT |
2566 | /* Check for a valid sequence. */ |
2567 | if (!seq || addr < seq->low_pc || addr >= seq->last_line->address) | |
2568 | goto fail; | |
2569 | ||
2570 | if (!build_line_info_table (table, seq)) | |
2571 | goto fail; | |
2572 | ||
2573 | /* Binary search the array of line information. */ | |
2574 | low = 0; | |
2575 | high = seq->num_lines; | |
2576 | info = NULL; | |
2577 | while (low < high) | |
1ee24f27 | 2578 | { |
089e3718 IT |
2579 | mid = (low + high) / 2; |
2580 | info = seq->line_info_lookup[mid]; | |
2581 | if (addr < info->address) | |
2582 | high = mid; | |
2583 | else if (addr >= seq->line_info_lookup[mid + 1]->address) | |
2584 | low = mid + 1; | |
2585 | else | |
2586 | break; | |
2587 | } | |
0ee19663 | 2588 | |
089e3718 IT |
2589 | /* Check for a valid line information entry. */ |
2590 | if (info | |
2591 | && addr >= info->address | |
2592 | && addr < seq->line_info_lookup[mid + 1]->address | |
2593 | && !(info->end_sequence || info == seq->last_line)) | |
2594 | { | |
2595 | *filename_ptr = info->filename; | |
2596 | *linenumber_ptr = info->line; | |
2597 | if (discriminator_ptr) | |
2598 | *discriminator_ptr = info->discriminator; | |
2599 | return seq->last_line->address - seq->low_pc; | |
1ee24f27 DJ |
2600 | } |
2601 | ||
dc1e8a47 | 2602 | fail: |
107601c8 | 2603 | *filename_ptr = NULL; |
240d6706 | 2604 | return 0; |
252b5132 | 2605 | } |
98591c73 | 2606 | |
0ee19663 | 2607 | /* Read in the .debug_ranges section for future reference. */ |
a13afe8e FF |
2608 | |
2609 | static bfd_boolean | |
089e3718 | 2610 | read_debug_ranges (struct comp_unit * unit) |
a13afe8e | 2611 | { |
99b06c60 AM |
2612 | struct dwarf2_debug *stash = unit->stash; |
2613 | struct dwarf2_debug_file *file = unit->file; | |
089e3718 | 2614 | |
fc28f9aa | 2615 | return read_section (unit->abfd, &stash->debug_sections[debug_ranges], |
99b06c60 AM |
2616 | file->syms, 0, |
2617 | &file->dwarf_ranges_buffer, &file->dwarf_ranges_size); | |
a13afe8e FF |
2618 | } |
2619 | ||
a092b084 | 2620 | /* Function table functions. */ |
252b5132 | 2621 | |
089e3718 IT |
2622 | static int |
2623 | compare_lookup_funcinfos (const void * a, const void * b) | |
2624 | { | |
2625 | const struct lookup_funcinfo * lookup1 = a; | |
2626 | const struct lookup_funcinfo * lookup2 = b; | |
2627 | ||
2628 | if (lookup1->low_addr < lookup2->low_addr) | |
2629 | return -1; | |
2630 | if (lookup1->low_addr > lookup2->low_addr) | |
2631 | return 1; | |
2632 | if (lookup1->high_addr < lookup2->high_addr) | |
2633 | return -1; | |
2634 | if (lookup1->high_addr > lookup2->high_addr) | |
2635 | return 1; | |
2636 | ||
8025b055 AM |
2637 | if (lookup1->idx < lookup2->idx) |
2638 | return -1; | |
2639 | if (lookup1->idx > lookup2->idx) | |
2640 | return 1; | |
089e3718 IT |
2641 | return 0; |
2642 | } | |
2643 | ||
2644 | static bfd_boolean | |
2645 | build_lookup_funcinfo_table (struct comp_unit * unit) | |
2646 | { | |
2647 | struct lookup_funcinfo *lookup_funcinfo_table = unit->lookup_funcinfo_table; | |
2648 | unsigned int number_of_functions = unit->number_of_functions; | |
2649 | struct funcinfo *each; | |
2650 | struct lookup_funcinfo *entry; | |
b6ddcd85 | 2651 | size_t func_index; |
089e3718 IT |
2652 | struct arange *range; |
2653 | bfd_vma low_addr, high_addr; | |
2654 | ||
2655 | if (lookup_funcinfo_table || number_of_functions == 0) | |
2656 | return TRUE; | |
2657 | ||
2658 | /* Create the function info lookup table. */ | |
2659 | lookup_funcinfo_table = (struct lookup_funcinfo *) | |
2660 | bfd_malloc (number_of_functions * sizeof (struct lookup_funcinfo)); | |
2661 | if (lookup_funcinfo_table == NULL) | |
2662 | return FALSE; | |
2663 | ||
2664 | /* Populate the function info lookup table. */ | |
b6ddcd85 | 2665 | func_index = number_of_functions; |
089e3718 IT |
2666 | for (each = unit->function_table; each; each = each->prev_func) |
2667 | { | |
b6ddcd85 | 2668 | entry = &lookup_funcinfo_table[--func_index]; |
089e3718 | 2669 | entry->funcinfo = each; |
8025b055 | 2670 | entry->idx = func_index; |
089e3718 IT |
2671 | |
2672 | /* Calculate the lowest and highest address for this function entry. */ | |
2673 | low_addr = entry->funcinfo->arange.low; | |
2674 | high_addr = entry->funcinfo->arange.high; | |
2675 | ||
2676 | for (range = entry->funcinfo->arange.next; range; range = range->next) | |
2677 | { | |
2678 | if (range->low < low_addr) | |
2679 | low_addr = range->low; | |
2680 | if (range->high > high_addr) | |
2681 | high_addr = range->high; | |
2682 | } | |
2683 | ||
2684 | entry->low_addr = low_addr; | |
2685 | entry->high_addr = high_addr; | |
2686 | } | |
2687 | ||
b6ddcd85 | 2688 | BFD_ASSERT (func_index == 0); |
089e3718 IT |
2689 | |
2690 | /* Sort the function by address. */ | |
2691 | qsort (lookup_funcinfo_table, | |
2692 | number_of_functions, | |
2693 | sizeof (struct lookup_funcinfo), | |
2694 | compare_lookup_funcinfos); | |
2695 | ||
2696 | /* Calculate the high watermark for each function in the lookup table. */ | |
2697 | high_addr = lookup_funcinfo_table[0].high_addr; | |
b6ddcd85 | 2698 | for (func_index = 1; func_index < number_of_functions; func_index++) |
089e3718 | 2699 | { |
b6ddcd85 | 2700 | entry = &lookup_funcinfo_table[func_index]; |
089e3718 IT |
2701 | if (entry->high_addr > high_addr) |
2702 | high_addr = entry->high_addr; | |
2703 | else | |
2704 | entry->high_addr = high_addr; | |
2705 | } | |
2706 | ||
2707 | unit->lookup_funcinfo_table = lookup_funcinfo_table; | |
2708 | return TRUE; | |
2709 | } | |
2710 | ||
e00e8198 | 2711 | /* If ADDR is within UNIT's function tables, set FUNCTION_PTR, and return |
240d6706 NC |
2712 | TRUE. Note that we need to find the function that has the smallest range |
2713 | that contains ADDR, to handle inlined functions without depending upon | |
2714 | them being ordered in TABLE by increasing range. */ | |
252b5132 | 2715 | |
b34976b6 | 2716 | static bfd_boolean |
4ab527b0 | 2717 | lookup_address_in_function_table (struct comp_unit *unit, |
818a27ac | 2718 | bfd_vma addr, |
e00e8198 | 2719 | struct funcinfo **function_ptr) |
252b5132 | 2720 | { |
089e3718 IT |
2721 | unsigned int number_of_functions = unit->number_of_functions; |
2722 | struct lookup_funcinfo* lookup_funcinfo = NULL; | |
2723 | struct funcinfo* funcinfo = NULL; | |
a13afe8e | 2724 | struct funcinfo* best_fit = NULL; |
4ba3b326 | 2725 | bfd_vma best_fit_len = 0; |
089e3718 | 2726 | bfd_size_type low, high, mid, first; |
a13afe8e | 2727 | struct arange *arange; |
252b5132 | 2728 | |
cd6581da NC |
2729 | if (number_of_functions == 0) |
2730 | return FALSE; | |
2731 | ||
089e3718 IT |
2732 | if (!build_lookup_funcinfo_table (unit)) |
2733 | return FALSE; | |
2734 | ||
cd6581da NC |
2735 | if (unit->lookup_funcinfo_table[number_of_functions - 1].high_addr < addr) |
2736 | return FALSE; | |
07d6d2b8 | 2737 | |
089e3718 IT |
2738 | /* Find the first function in the lookup table which may contain the |
2739 | specified address. */ | |
2740 | low = 0; | |
2741 | high = number_of_functions; | |
2742 | first = high; | |
2743 | while (low < high) | |
252b5132 | 2744 | { |
089e3718 IT |
2745 | mid = (low + high) / 2; |
2746 | lookup_funcinfo = &unit->lookup_funcinfo_table[mid]; | |
2747 | if (addr < lookup_funcinfo->low_addr) | |
2748 | high = mid; | |
2749 | else if (addr >= lookup_funcinfo->high_addr) | |
2750 | low = mid + 1; | |
2751 | else | |
2752 | high = first = mid; | |
2753 | } | |
2754 | ||
2755 | /* Find the 'best' match for the address. The prior algorithm defined the | |
2756 | best match as the function with the smallest address range containing | |
2757 | the specified address. This definition should probably be changed to the | |
2758 | innermost inline routine containing the address, but right now we want | |
2759 | to get the same results we did before. */ | |
2760 | while (first < number_of_functions) | |
2761 | { | |
2762 | if (addr < unit->lookup_funcinfo_table[first].low_addr) | |
2763 | break; | |
2764 | funcinfo = unit->lookup_funcinfo_table[first].funcinfo; | |
2765 | ||
2766 | for (arange = &funcinfo->arange; arange; arange = arange->next) | |
252b5132 | 2767 | { |
089e3718 IT |
2768 | if (addr < arange->low || addr >= arange->high) |
2769 | continue; | |
2770 | ||
2771 | if (!best_fit | |
2772 | || arange->high - arange->low < best_fit_len | |
2773 | /* The following comparison is designed to return the same | |
2774 | match as the previous algorithm for routines which have the | |
2775 | same best fit length. */ | |
2776 | || (arange->high - arange->low == best_fit_len | |
2777 | && funcinfo > best_fit)) | |
a13afe8e | 2778 | { |
089e3718 IT |
2779 | best_fit = funcinfo; |
2780 | best_fit_len = arange->high - arange->low; | |
a13afe8e | 2781 | } |
252b5132 | 2782 | } |
98591c73 | 2783 | |
089e3718 | 2784 | first++; |
a13afe8e | 2785 | } |
089e3718 IT |
2786 | |
2787 | if (!best_fit) | |
2788 | return FALSE; | |
2789 | ||
2790 | *function_ptr = best_fit; | |
2791 | return TRUE; | |
252b5132 RH |
2792 | } |
2793 | ||
5420f73d L |
2794 | /* If SYM at ADDR is within function table of UNIT, set FILENAME_PTR |
2795 | and LINENUMBER_PTR, and return TRUE. */ | |
2796 | ||
2797 | static bfd_boolean | |
2798 | lookup_symbol_in_function_table (struct comp_unit *unit, | |
2799 | asymbol *sym, | |
2800 | bfd_vma addr, | |
2801 | const char **filename_ptr, | |
2802 | unsigned int *linenumber_ptr) | |
2803 | { | |
2804 | struct funcinfo* each_func; | |
2805 | struct funcinfo* best_fit = NULL; | |
4ba3b326 | 2806 | bfd_vma best_fit_len = 0; |
5420f73d L |
2807 | struct arange *arange; |
2808 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 2809 | asection *sec = bfd_asymbol_section (sym); |
5420f73d L |
2810 | |
2811 | for (each_func = unit->function_table; | |
2812 | each_func; | |
2813 | each_func = each_func->prev_func) | |
2814 | { | |
2815 | for (arange = &each_func->arange; | |
2816 | arange; | |
2817 | arange = arange->next) | |
2818 | { | |
2819 | if ((!each_func->sec || each_func->sec == sec) | |
2820 | && addr >= arange->low | |
2821 | && addr < arange->high | |
650f284e | 2822 | && each_func->name |
5420f73d L |
2823 | && strcmp (name, each_func->name) == 0 |
2824 | && (!best_fit | |
4ba3b326 TG |
2825 | || arange->high - arange->low < best_fit_len)) |
2826 | { | |
2827 | best_fit = each_func; | |
2828 | best_fit_len = arange->high - arange->low; | |
2829 | } | |
5420f73d L |
2830 | } |
2831 | } | |
2832 | ||
2833 | if (best_fit) | |
2834 | { | |
2835 | best_fit->sec = sec; | |
2836 | *filename_ptr = best_fit->file; | |
2837 | *linenumber_ptr = best_fit->line; | |
2838 | return TRUE; | |
2839 | } | |
2840 | else | |
2841 | return FALSE; | |
2842 | } | |
2843 | ||
2844 | /* Variable table functions. */ | |
2845 | ||
2846 | /* If SYM is within variable table of UNIT, set FILENAME_PTR and | |
2847 | LINENUMBER_PTR, and return TRUE. */ | |
2848 | ||
2849 | static bfd_boolean | |
2850 | lookup_symbol_in_variable_table (struct comp_unit *unit, | |
2851 | asymbol *sym, | |
5cf2e3f0 | 2852 | bfd_vma addr, |
5420f73d L |
2853 | const char **filename_ptr, |
2854 | unsigned int *linenumber_ptr) | |
2855 | { | |
2856 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 2857 | asection *sec = bfd_asymbol_section (sym); |
5420f73d L |
2858 | struct varinfo* each; |
2859 | ||
2860 | for (each = unit->variable_table; each; each = each->prev_var) | |
f3a08f77 | 2861 | if (! each->stack |
5cf2e3f0 L |
2862 | && each->file != NULL |
2863 | && each->name != NULL | |
2864 | && each->addr == addr | |
5420f73d L |
2865 | && (!each->sec || each->sec == sec) |
2866 | && strcmp (name, each->name) == 0) | |
2867 | break; | |
2868 | ||
2869 | if (each) | |
2870 | { | |
2871 | each->sec = sec; | |
2872 | *filename_ptr = each->file; | |
2873 | *linenumber_ptr = each->line; | |
2874 | return TRUE; | |
2875 | } | |
089e3718 IT |
2876 | |
2877 | return FALSE; | |
5420f73d L |
2878 | } |
2879 | ||
99b06c60 AM |
2880 | static struct comp_unit *stash_comp_unit (struct dwarf2_debug *, |
2881 | struct dwarf2_debug_file *); | |
2882 | static bfd_boolean comp_unit_maybe_decode_line_info (struct comp_unit *); | |
c327a44f | 2883 | |
52a93b95 | 2884 | static bfd_boolean |
063c511b AM |
2885 | find_abstract_instance (struct comp_unit *unit, |
2886 | struct attribute *attr_ptr, | |
2887 | unsigned int recur_count, | |
2888 | const char **pname, | |
2889 | bfd_boolean *is_linkage, | |
2890 | char **filename_ptr, | |
2891 | int *linenumber_ptr) | |
06f22d7e FF |
2892 | { |
2893 | bfd *abfd = unit->abfd; | |
e63ef095 | 2894 | bfd_byte *info_ptr = NULL; |
dbb3fbbb | 2895 | bfd_byte *info_ptr_end; |
06f22d7e FF |
2896 | unsigned int abbrev_number, bytes_read, i; |
2897 | struct abbrev_info *abbrev; | |
5609a71e | 2898 | bfd_uint64_t die_ref = attr_ptr->u.val; |
06f22d7e | 2899 | struct attribute attr; |
52a93b95 | 2900 | const char *name = NULL; |
06f22d7e | 2901 | |
063c511b AM |
2902 | if (recur_count == 100) |
2903 | { | |
2904 | _bfd_error_handler | |
2905 | (_("DWARF error: abstract instance recursion detected")); | |
2906 | bfd_set_error (bfd_error_bad_value); | |
2907 | return FALSE; | |
2908 | } | |
2909 | ||
5609a71e DJ |
2910 | /* DW_FORM_ref_addr can reference an entry in a different CU. It |
2911 | is an offset from the .debug_info section, not the current CU. */ | |
2912 | if (attr_ptr->form == DW_FORM_ref_addr) | |
2913 | { | |
2914 | /* We only support DW_FORM_ref_addr within the same file, so | |
1b86808a AM |
2915 | any relocations should be resolved already. Check this by |
2916 | testing for a zero die_ref; There can't be a valid reference | |
2917 | to the header of a .debug_info section. | |
2918 | DW_FORM_ref_addr is an offset relative to .debug_info. | |
2919 | Normally when using the GNU linker this is accomplished by | |
2920 | emitting a symbolic reference to a label, because .debug_info | |
2921 | sections are linked at zero. When there are multiple section | |
2922 | groups containing .debug_info, as there might be in a | |
2923 | relocatable object file, it would be reasonable to assume that | |
2924 | a symbolic reference to a label in any .debug_info section | |
2925 | might be used. Since we lay out multiple .debug_info | |
2926 | sections at non-zero VMAs (see place_sections), and read | |
99b06c60 AM |
2927 | them contiguously into dwarf_info_buffer, that means the |
2928 | reference is relative to dwarf_info_buffer. */ | |
1b86808a AM |
2929 | size_t total; |
2930 | ||
99b06c60 AM |
2931 | info_ptr = unit->file->dwarf_info_buffer; |
2932 | info_ptr_end = info_ptr + unit->file->dwarf_info_size; | |
1b86808a | 2933 | total = info_ptr_end - info_ptr; |
a4cd947a AM |
2934 | if (!die_ref) |
2935 | return TRUE; | |
2936 | else if (die_ref >= total) | |
52a93b95 AM |
2937 | { |
2938 | _bfd_error_handler | |
9793eb77 | 2939 | (_("DWARF error: invalid abstract instance DIE ref")); |
52a93b95 AM |
2940 | bfd_set_error (bfd_error_bad_value); |
2941 | return FALSE; | |
2942 | } | |
1b86808a | 2943 | info_ptr += die_ref; |
e63ef095 AM |
2944 | } |
2945 | else if (attr_ptr->form == DW_FORM_GNU_ref_alt) | |
2946 | { | |
2947 | bfd_boolean first_time = unit->stash->alt.dwarf_info_buffer == NULL; | |
2948 | ||
2949 | info_ptr = read_alt_indirect_ref (unit, die_ref); | |
2950 | if (first_time) | |
2951 | unit->stash->alt.info_ptr = unit->stash->alt.dwarf_info_buffer; | |
2952 | if (info_ptr == NULL) | |
2953 | { | |
2954 | _bfd_error_handler | |
2955 | (_("DWARF error: unable to read alt ref %" PRIu64), | |
2956 | (uint64_t) die_ref); | |
2957 | bfd_set_error (bfd_error_bad_value); | |
2958 | return FALSE; | |
2959 | } | |
2960 | info_ptr_end = (unit->stash->alt.dwarf_info_buffer | |
2961 | + unit->stash->alt.dwarf_info_size); | |
2962 | if (unit->stash->alt.all_comp_units) | |
2963 | unit = unit->stash->alt.all_comp_units; | |
2964 | } | |
0a9c7b2b | 2965 | |
e63ef095 AM |
2966 | if (attr_ptr->form == DW_FORM_ref_addr |
2967 | || attr_ptr->form == DW_FORM_GNU_ref_alt) | |
2968 | { | |
0a9c7b2b NC |
2969 | /* Now find the CU containing this pointer. */ |
2970 | if (info_ptr >= unit->info_ptr_unit && info_ptr < unit->end_ptr) | |
1b86808a | 2971 | info_ptr_end = unit->end_ptr; |
0a9c7b2b NC |
2972 | else |
2973 | { | |
2974 | /* Check other CUs to see if they contain the abbrev. */ | |
e63ef095 | 2975 | struct comp_unit *u; |
0a9c7b2b NC |
2976 | |
2977 | for (u = unit->prev_unit; u != NULL; u = u->prev_unit) | |
2978 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
2979 | break; | |
2980 | ||
2981 | if (u == NULL) | |
2982 | for (u = unit->next_unit; u != NULL; u = u->next_unit) | |
2983 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
2984 | break; | |
2985 | ||
e63ef095 AM |
2986 | if (attr_ptr->form == DW_FORM_ref_addr) |
2987 | while (u == NULL) | |
2988 | { | |
2989 | u = stash_comp_unit (unit->stash, &unit->stash->f); | |
2990 | if (u == NULL) | |
2991 | break; | |
2992 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
2993 | break; | |
2994 | u = NULL; | |
2995 | } | |
2996 | ||
2997 | if (attr_ptr->form == DW_FORM_GNU_ref_alt) | |
2998 | while (u == NULL) | |
2999 | { | |
3000 | u = stash_comp_unit (unit->stash, &unit->stash->alt); | |
3001 | if (u == NULL) | |
3002 | break; | |
3003 | if (info_ptr >= u->info_ptr_unit && info_ptr < u->end_ptr) | |
3004 | break; | |
3005 | u = NULL; | |
3006 | } | |
dfc19da6 AM |
3007 | |
3008 | if (u == NULL) | |
3009 | { | |
3010 | _bfd_error_handler | |
3011 | (_("DWARF error: unable to locate abstract instance DIE ref %" | |
3012 | PRIu64), (uint64_t) die_ref); | |
3013 | bfd_set_error (bfd_error_bad_value); | |
3014 | return FALSE; | |
3015 | } | |
3016 | unit = u; | |
3017 | info_ptr_end = unit->end_ptr; | |
0a9c7b2b | 3018 | } |
5609a71e | 3019 | } |
68ffbac6 | 3020 | else |
dbb3fbbb | 3021 | { |
1b86808a AM |
3022 | /* DW_FORM_ref1, DW_FORM_ref2, DW_FORM_ref4, DW_FORM_ref8 or |
3023 | DW_FORM_ref_udata. These are all references relative to the | |
3024 | start of the current CU. */ | |
3025 | size_t total; | |
3026 | ||
3027 | info_ptr = unit->info_ptr_unit; | |
dbb3fbbb | 3028 | info_ptr_end = unit->end_ptr; |
1b86808a AM |
3029 | total = info_ptr_end - info_ptr; |
3030 | if (!die_ref || die_ref >= total) | |
3031 | { | |
3032 | _bfd_error_handler | |
9793eb77 | 3033 | (_("DWARF error: invalid abstract instance DIE ref")); |
1b86808a AM |
3034 | bfd_set_error (bfd_error_bad_value); |
3035 | return FALSE; | |
3036 | } | |
3037 | info_ptr += die_ref; | |
dbb3fbbb | 3038 | } |
95e34fb4 | 3039 | |
4265548c PA |
3040 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
3041 | FALSE, info_ptr_end); | |
06f22d7e FF |
3042 | info_ptr += bytes_read; |
3043 | ||
3044 | if (abbrev_number) | |
3045 | { | |
3046 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); | |
3047 | if (! abbrev) | |
3048 | { | |
4eca0228 | 3049 | _bfd_error_handler |
9793eb77 | 3050 | (_("DWARF error: could not find abbrev number %u"), abbrev_number); |
06f22d7e | 3051 | bfd_set_error (bfd_error_bad_value); |
52a93b95 | 3052 | return FALSE; |
06f22d7e FF |
3053 | } |
3054 | else | |
3055 | { | |
d5cbaa15 | 3056 | for (i = 0; i < abbrev->num_attrs; ++i) |
06f22d7e | 3057 | { |
8af6b354 | 3058 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, |
dbb3fbbb | 3059 | info_ptr, info_ptr_end); |
8af6b354 AM |
3060 | if (info_ptr == NULL) |
3061 | break; | |
26bf4e33 FF |
3062 | switch (attr.name) |
3063 | { | |
3064 | case DW_AT_name: | |
643be349 JJ |
3065 | /* Prefer DW_AT_MIPS_linkage_name or DW_AT_linkage_name |
3066 | over DW_AT_name. */ | |
60d77146 | 3067 | if (name == NULL && is_str_attr (attr.form)) |
e00e8198 AM |
3068 | { |
3069 | name = attr.u.str; | |
3070 | if (non_mangled (unit->lang)) | |
3071 | *is_linkage = TRUE; | |
3072 | } | |
26bf4e33 FF |
3073 | break; |
3074 | case DW_AT_specification: | |
063c511b | 3075 | if (!find_abstract_instance (unit, &attr, recur_count + 1, |
c8d3f932 | 3076 | &name, is_linkage, |
422f3d3d | 3077 | filename_ptr, linenumber_ptr)) |
52a93b95 | 3078 | return FALSE; |
26bf4e33 | 3079 | break; |
643be349 | 3080 | case DW_AT_linkage_name: |
d5cbaa15 | 3081 | case DW_AT_MIPS_linkage_name: |
60d77146 NC |
3082 | /* PR 16949: Corrupt debug info can place |
3083 | non-string forms into these attributes. */ | |
6d74e8a1 | 3084 | if (is_str_attr (attr.form)) |
e00e8198 AM |
3085 | { |
3086 | name = attr.u.str; | |
3087 | *is_linkage = TRUE; | |
3088 | } | |
d5cbaa15 | 3089 | break; |
422f3d3d | 3090 | case DW_AT_decl_file: |
99b06c60 | 3091 | if (!comp_unit_maybe_decode_line_info (unit)) |
dfc19da6 | 3092 | return FALSE; |
422f3d3d PC |
3093 | *filename_ptr = concat_filename (unit->line_table, |
3094 | attr.u.val); | |
3095 | break; | |
3096 | case DW_AT_decl_line: | |
3097 | *linenumber_ptr = attr.u.val; | |
3098 | break; | |
26bf4e33 FF |
3099 | default: |
3100 | break; | |
3101 | } | |
06f22d7e FF |
3102 | } |
3103 | } | |
3104 | } | |
52a93b95 AM |
3105 | *pname = name; |
3106 | return TRUE; | |
06f22d7e FF |
3107 | } |
3108 | ||
8af6b354 AM |
3109 | static bfd_boolean |
3110 | read_rangelist (struct comp_unit *unit, struct arange *arange, | |
3111 | bfd_uint64_t offset) | |
a13afe8e FF |
3112 | { |
3113 | bfd_byte *ranges_ptr; | |
dbb3fbbb | 3114 | bfd_byte *ranges_end; |
a13afe8e FF |
3115 | bfd_vma base_address = unit->base_address; |
3116 | ||
99b06c60 | 3117 | if (! unit->file->dwarf_ranges_buffer) |
a13afe8e FF |
3118 | { |
3119 | if (! read_debug_ranges (unit)) | |
8af6b354 | 3120 | return FALSE; |
a13afe8e | 3121 | } |
d8d1c398 | 3122 | |
99b06c60 AM |
3123 | ranges_ptr = unit->file->dwarf_ranges_buffer + offset; |
3124 | if (ranges_ptr < unit->file->dwarf_ranges_buffer) | |
dbb3fbbb | 3125 | return FALSE; |
99b06c60 | 3126 | ranges_end = unit->file->dwarf_ranges_buffer + unit->file->dwarf_ranges_size; |
62f8d217 | 3127 | |
a13afe8e FF |
3128 | for (;;) |
3129 | { | |
3130 | bfd_vma low_pc; | |
3131 | bfd_vma high_pc; | |
3132 | ||
dbb3fbbb | 3133 | /* PR 17512: file: 62cada7d. */ |
62f8d217 | 3134 | if (ranges_ptr + 2 * unit->addr_size > ranges_end) |
dbb3fbbb NC |
3135 | return FALSE; |
3136 | ||
3137 | low_pc = read_address (unit, ranges_ptr, ranges_end); | |
13d72a14 | 3138 | ranges_ptr += unit->addr_size; |
dbb3fbbb | 3139 | high_pc = read_address (unit, ranges_ptr, ranges_end); |
13d72a14 AN |
3140 | ranges_ptr += unit->addr_size; |
3141 | ||
a13afe8e FF |
3142 | if (low_pc == 0 && high_pc == 0) |
3143 | break; | |
3144 | if (low_pc == -1UL && high_pc != -1UL) | |
3145 | base_address = high_pc; | |
3146 | else | |
8af6b354 | 3147 | { |
a2a50954 | 3148 | if (!arange_add (unit, arange, |
8af6b354 AM |
3149 | base_address + low_pc, base_address + high_pc)) |
3150 | return FALSE; | |
3151 | } | |
a13afe8e | 3152 | } |
8af6b354 | 3153 | return TRUE; |
a13afe8e FF |
3154 | } |
3155 | ||
f3a08f77 NC |
3156 | static struct varinfo * |
3157 | lookup_var_by_offset (bfd_uint64_t offset, struct varinfo * table) | |
3158 | { | |
3159 | while (table) | |
3160 | { | |
3161 | if (table->unit_offset == offset) | |
3162 | return table; | |
3163 | table = table->prev_var; | |
3164 | } | |
3165 | ||
3166 | return NULL; | |
3167 | } | |
3168 | ||
3169 | ||
a092b084 | 3170 | /* DWARF2 Compilation unit functions. */ |
252b5132 RH |
3171 | |
3172 | /* Scan over each die in a comp. unit looking for functions to add | |
34b5e0b2 | 3173 | to the function table and variables to the variable table. */ |
252b5132 | 3174 | |
b34976b6 | 3175 | static bfd_boolean |
5420f73d | 3176 | scan_unit_for_symbols (struct comp_unit *unit) |
252b5132 RH |
3177 | { |
3178 | bfd *abfd = unit->abfd; | |
f075ee0c | 3179 | bfd_byte *info_ptr = unit->first_child_die_ptr; |
05192282 | 3180 | bfd_byte *info_ptr_end = unit->end_ptr; |
52a93b95 AM |
3181 | int nesting_level = 0; |
3182 | struct nest_funcinfo { | |
3183 | struct funcinfo *func; | |
3184 | } *nested_funcs; | |
c955f9cd JW |
3185 | int nested_funcs_size; |
3186 | ||
3187 | /* Maintain a stack of in-scope functions and inlined functions, which we | |
3188 | can use to set the caller_func field. */ | |
3189 | nested_funcs_size = 32; | |
52a93b95 AM |
3190 | nested_funcs = (struct nest_funcinfo *) |
3191 | bfd_malloc (nested_funcs_size * sizeof (*nested_funcs)); | |
c955f9cd JW |
3192 | if (nested_funcs == NULL) |
3193 | return FALSE; | |
52a93b95 | 3194 | nested_funcs[nesting_level].func = 0; |
252b5132 | 3195 | |
52a93b95 | 3196 | while (nesting_level >= 0) |
252b5132 RH |
3197 | { |
3198 | unsigned int abbrev_number, bytes_read, i; | |
3199 | struct abbrev_info *abbrev; | |
3200 | struct attribute attr; | |
3201 | struct funcinfo *func; | |
5420f73d | 3202 | struct varinfo *var; |
a13afe8e FF |
3203 | bfd_vma low_pc = 0; |
3204 | bfd_vma high_pc = 0; | |
c49ead2f | 3205 | bfd_boolean high_pc_relative = FALSE; |
f3a08f77 | 3206 | bfd_uint64_t current_offset; |
252b5132 | 3207 | |
877a8638 | 3208 | /* PR 17512: file: 9f405d9d. */ |
dbb3fbbb | 3209 | if (info_ptr >= info_ptr_end) |
877a8638 | 3210 | goto fail; |
62f8d217 | 3211 | |
f3a08f77 | 3212 | current_offset = info_ptr - unit->info_ptr_unit; |
4265548c PA |
3213 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
3214 | FALSE, info_ptr_end); | |
252b5132 RH |
3215 | info_ptr += bytes_read; |
3216 | ||
3217 | if (! abbrev_number) | |
3218 | { | |
3219 | nesting_level--; | |
3220 | continue; | |
3221 | } | |
98591c73 | 3222 | |
e643cb45 | 3223 | abbrev = lookup_abbrev (abbrev_number, unit->abbrevs); |
252b5132 RH |
3224 | if (! abbrev) |
3225 | { | |
e643cb45 NC |
3226 | static unsigned int previous_failed_abbrev = -1U; |
3227 | ||
3228 | /* Avoid multiple reports of the same missing abbrev. */ | |
3229 | if (abbrev_number != previous_failed_abbrev) | |
3230 | { | |
3231 | _bfd_error_handler | |
9793eb77 | 3232 | (_("DWARF error: could not find abbrev number %u"), |
e643cb45 NC |
3233 | abbrev_number); |
3234 | previous_failed_abbrev = abbrev_number; | |
3235 | } | |
252b5132 | 3236 | bfd_set_error (bfd_error_bad_value); |
8af6b354 | 3237 | goto fail; |
252b5132 | 3238 | } |
98591c73 | 3239 | |
06f22d7e | 3240 | if (abbrev->tag == DW_TAG_subprogram |
5420f73d | 3241 | || abbrev->tag == DW_TAG_entry_point |
06f22d7e | 3242 | || abbrev->tag == DW_TAG_inlined_subroutine) |
252b5132 | 3243 | { |
986f0783 | 3244 | size_t amt = sizeof (struct funcinfo); |
f3a08f77 NC |
3245 | |
3246 | var = NULL; | |
a50b1753 | 3247 | func = (struct funcinfo *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
3248 | if (func == NULL) |
3249 | goto fail; | |
4ab527b0 | 3250 | func->tag = abbrev->tag; |
252b5132 RH |
3251 | func->prev_func = unit->function_table; |
3252 | unit->function_table = func; | |
e643cb45 | 3253 | unit->number_of_functions++; |
bd210d54 | 3254 | BFD_ASSERT (!unit->cached); |
c955f9cd JW |
3255 | |
3256 | if (func->tag == DW_TAG_inlined_subroutine) | |
52a93b95 AM |
3257 | for (i = nesting_level; i-- != 0; ) |
3258 | if (nested_funcs[i].func) | |
c955f9cd | 3259 | { |
52a93b95 | 3260 | func->caller_func = nested_funcs[i].func; |
c955f9cd JW |
3261 | break; |
3262 | } | |
52a93b95 | 3263 | nested_funcs[nesting_level].func = func; |
252b5132 RH |
3264 | } |
3265 | else | |
5420f73d L |
3266 | { |
3267 | func = NULL; | |
3268 | if (abbrev->tag == DW_TAG_variable) | |
3269 | { | |
986f0783 | 3270 | size_t amt = sizeof (struct varinfo); |
a50b1753 | 3271 | var = (struct varinfo *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
3272 | if (var == NULL) |
3273 | goto fail; | |
5420f73d | 3274 | var->tag = abbrev->tag; |
f3a08f77 | 3275 | var->stack = TRUE; |
5420f73d L |
3276 | var->prev_var = unit->variable_table; |
3277 | unit->variable_table = var; | |
f3a08f77 | 3278 | var->unit_offset = current_offset; |
e643cb45 NC |
3279 | /* PR 18205: Missing debug information can cause this |
3280 | var to be attached to an already cached unit. */ | |
5420f73d | 3281 | } |
f3a08f77 NC |
3282 | else |
3283 | var = NULL; | |
c955f9cd JW |
3284 | |
3285 | /* No inline function in scope at this nesting level. */ | |
52a93b95 | 3286 | nested_funcs[nesting_level].func = 0; |
5420f73d | 3287 | } |
98591c73 | 3288 | |
252b5132 RH |
3289 | for (i = 0; i < abbrev->num_attrs; ++i) |
3290 | { | |
52a93b95 AM |
3291 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], |
3292 | unit, info_ptr, info_ptr_end); | |
8af6b354 | 3293 | if (info_ptr == NULL) |
8ecc1f20 | 3294 | goto fail; |
98591c73 | 3295 | |
252b5132 RH |
3296 | if (func) |
3297 | { | |
3298 | switch (attr.name) | |
3299 | { | |
4ab527b0 | 3300 | case DW_AT_call_file: |
8af6b354 AM |
3301 | func->caller_file = concat_filename (unit->line_table, |
3302 | attr.u.val); | |
4ab527b0 FF |
3303 | break; |
3304 | ||
3305 | case DW_AT_call_line: | |
3306 | func->caller_line = attr.u.val; | |
3307 | break; | |
3308 | ||
06f22d7e | 3309 | case DW_AT_abstract_origin: |
5d8e6b4d | 3310 | case DW_AT_specification: |
063c511b | 3311 | if (!find_abstract_instance (unit, &attr, 0, |
422f3d3d PC |
3312 | &func->name, |
3313 | &func->is_linkage, | |
3314 | &func->file, | |
3315 | &func->line)) | |
52a93b95 | 3316 | goto fail; |
06f22d7e FF |
3317 | break; |
3318 | ||
252b5132 | 3319 | case DW_AT_name: |
643be349 JJ |
3320 | /* Prefer DW_AT_MIPS_linkage_name or DW_AT_linkage_name |
3321 | over DW_AT_name. */ | |
60d77146 | 3322 | if (func->name == NULL && is_str_attr (attr.form)) |
e00e8198 AM |
3323 | { |
3324 | func->name = attr.u.str; | |
3325 | if (non_mangled (unit->lang)) | |
3326 | func->is_linkage = TRUE; | |
3327 | } | |
252b5132 | 3328 | break; |
98591c73 | 3329 | |
643be349 | 3330 | case DW_AT_linkage_name: |
252b5132 | 3331 | case DW_AT_MIPS_linkage_name: |
60d77146 NC |
3332 | /* PR 16949: Corrupt debug info can place |
3333 | non-string forms into these attributes. */ | |
3334 | if (is_str_attr (attr.form)) | |
e00e8198 AM |
3335 | { |
3336 | func->name = attr.u.str; | |
3337 | func->is_linkage = TRUE; | |
3338 | } | |
252b5132 RH |
3339 | break; |
3340 | ||
3341 | case DW_AT_low_pc: | |
a13afe8e | 3342 | low_pc = attr.u.val; |
252b5132 RH |
3343 | break; |
3344 | ||
3345 | case DW_AT_high_pc: | |
a13afe8e | 3346 | high_pc = attr.u.val; |
c49ead2f | 3347 | high_pc_relative = attr.form != DW_FORM_addr; |
a13afe8e FF |
3348 | break; |
3349 | ||
3350 | case DW_AT_ranges: | |
8af6b354 AM |
3351 | if (!read_rangelist (unit, &func->arange, attr.u.val)) |
3352 | goto fail; | |
252b5132 RH |
3353 | break; |
3354 | ||
5420f73d L |
3355 | case DW_AT_decl_file: |
3356 | func->file = concat_filename (unit->line_table, | |
3357 | attr.u.val); | |
3358 | break; | |
3359 | ||
3360 | case DW_AT_decl_line: | |
3361 | func->line = attr.u.val; | |
3362 | break; | |
3363 | ||
3364 | default: | |
3365 | break; | |
3366 | } | |
3367 | } | |
3368 | else if (var) | |
3369 | { | |
3370 | switch (attr.name) | |
3371 | { | |
f3a08f77 NC |
3372 | case DW_AT_specification: |
3373 | if (attr.u.val) | |
3374 | { | |
3375 | struct varinfo * spec_var; | |
3376 | ||
aec72fda AM |
3377 | spec_var = lookup_var_by_offset (attr.u.val, |
3378 | unit->variable_table); | |
f3a08f77 NC |
3379 | if (spec_var == NULL) |
3380 | { | |
aec72fda AM |
3381 | _bfd_error_handler (_("DWARF error: could not find " |
3382 | "variable specification " | |
3383 | "at offset %lx"), | |
3384 | (unsigned long) attr.u.val); | |
f3a08f77 NC |
3385 | break; |
3386 | } | |
3387 | ||
3388 | if (var->name == NULL) | |
3389 | var->name = spec_var->name; | |
aec72fda | 3390 | if (var->file == NULL && spec_var->file != NULL) |
f3a08f77 NC |
3391 | var->file = strdup (spec_var->file); |
3392 | if (var->line == 0) | |
3393 | var->line = spec_var->line; | |
3394 | if (var->sec == NULL) | |
3395 | var->sec = spec_var->sec; | |
3396 | } | |
3397 | break; | |
3398 | ||
5420f73d | 3399 | case DW_AT_name: |
11855d8a AM |
3400 | if (is_str_attr (attr.form)) |
3401 | var->name = attr.u.str; | |
5420f73d L |
3402 | break; |
3403 | ||
3404 | case DW_AT_decl_file: | |
3405 | var->file = concat_filename (unit->line_table, | |
3406 | attr.u.val); | |
3407 | break; | |
3408 | ||
3409 | case DW_AT_decl_line: | |
3410 | var->line = attr.u.val; | |
3411 | break; | |
3412 | ||
3413 | case DW_AT_external: | |
3414 | if (attr.u.val != 0) | |
f3a08f77 | 3415 | var->stack = FALSE; |
5420f73d L |
3416 | break; |
3417 | ||
3418 | case DW_AT_location: | |
5cf2e3f0 | 3419 | switch (attr.form) |
5420f73d | 3420 | { |
5cf2e3f0 L |
3421 | case DW_FORM_block: |
3422 | case DW_FORM_block1: | |
3423 | case DW_FORM_block2: | |
3424 | case DW_FORM_block4: | |
c07cbdd7 | 3425 | case DW_FORM_exprloc: |
0d76029f AM |
3426 | if (attr.u.blk->data != NULL |
3427 | && *attr.u.blk->data == DW_OP_addr) | |
5420f73d | 3428 | { |
f3a08f77 | 3429 | var->stack = FALSE; |
98b880f4 JW |
3430 | |
3431 | /* Verify that DW_OP_addr is the only opcode in the | |
3432 | location, in which case the block size will be 1 | |
3433 | plus the address size. */ | |
3434 | /* ??? For TLS variables, gcc can emit | |
3435 | DW_OP_addr <addr> DW_OP_GNU_push_tls_address | |
3436 | which we don't handle here yet. */ | |
3437 | if (attr.u.blk->size == unit->addr_size + 1U) | |
3438 | var->addr = bfd_get (unit->addr_size * 8, | |
3439 | unit->abfd, | |
3440 | attr.u.blk->data + 1); | |
5420f73d | 3441 | } |
5cf2e3f0 | 3442 | break; |
d8d1c398 | 3443 | |
5cf2e3f0 L |
3444 | default: |
3445 | break; | |
5420f73d L |
3446 | } |
3447 | break; | |
3448 | ||
252b5132 RH |
3449 | default: |
3450 | break; | |
3451 | } | |
3452 | } | |
3453 | } | |
3454 | ||
c49ead2f MW |
3455 | if (high_pc_relative) |
3456 | high_pc += low_pc; | |
3457 | ||
a13afe8e FF |
3458 | if (func && high_pc != 0) |
3459 | { | |
a2a50954 | 3460 | if (!arange_add (unit, &func->arange, low_pc, high_pc)) |
8af6b354 | 3461 | goto fail; |
a13afe8e FF |
3462 | } |
3463 | ||
252b5132 | 3464 | if (abbrev->has_children) |
c955f9cd JW |
3465 | { |
3466 | nesting_level++; | |
3467 | ||
3468 | if (nesting_level >= nested_funcs_size) | |
3469 | { | |
52a93b95 | 3470 | struct nest_funcinfo *tmp; |
c955f9cd JW |
3471 | |
3472 | nested_funcs_size *= 2; | |
52a93b95 | 3473 | tmp = (struct nest_funcinfo *) |
a2a50954 | 3474 | bfd_realloc (nested_funcs, |
52a93b95 | 3475 | nested_funcs_size * sizeof (*nested_funcs)); |
c955f9cd | 3476 | if (tmp == NULL) |
8af6b354 | 3477 | goto fail; |
c955f9cd JW |
3478 | nested_funcs = tmp; |
3479 | } | |
52a93b95 | 3480 | nested_funcs[nesting_level].func = 0; |
c955f9cd | 3481 | } |
252b5132 RH |
3482 | } |
3483 | ||
c955f9cd | 3484 | free (nested_funcs); |
b34976b6 | 3485 | return TRUE; |
8af6b354 AM |
3486 | |
3487 | fail: | |
3488 | free (nested_funcs); | |
3489 | return FALSE; | |
252b5132 RH |
3490 | } |
3491 | ||
dfc19da6 | 3492 | /* Parse a DWARF2 compilation unit starting at INFO_PTR. UNIT_LENGTH |
5e38c3b8 | 3493 | includes the compilation unit header that proceeds the DIE's, but |
5c4491d3 | 3494 | does not include the length field that precedes each compilation |
5e38c3b8 | 3495 | unit header. END_PTR points one past the end of this comp unit. |
d03ba2a1 | 3496 | OFFSET_SIZE is the size of DWARF2 offsets (either 4 or 8 bytes). |
252b5132 RH |
3497 | |
3498 | This routine does not read the whole compilation unit; only enough | |
3499 | to get to the line number information for the compilation unit. */ | |
3500 | ||
3501 | static struct comp_unit * | |
0d161102 | 3502 | parse_comp_unit (struct dwarf2_debug *stash, |
99b06c60 AM |
3503 | struct dwarf2_debug_file *file, |
3504 | bfd_byte *info_ptr, | |
818a27ac | 3505 | bfd_vma unit_length, |
f075ee0c | 3506 | bfd_byte *info_ptr_unit, |
818a27ac | 3507 | unsigned int offset_size) |
252b5132 RH |
3508 | { |
3509 | struct comp_unit* unit; | |
f46c2da6 | 3510 | unsigned int version; |
8ce8c090 | 3511 | bfd_uint64_t abbrev_offset = 0; |
0041f7df JK |
3512 | /* Initialize it just to avoid a GCC false warning. */ |
3513 | unsigned int addr_size = -1; | |
252b5132 | 3514 | struct abbrev_info** abbrevs; |
252b5132 RH |
3515 | unsigned int abbrev_number, bytes_read, i; |
3516 | struct abbrev_info *abbrev; | |
3517 | struct attribute attr; | |
f075ee0c | 3518 | bfd_byte *end_ptr = info_ptr + unit_length; |
986f0783 | 3519 | size_t amt; |
a13afe8e FF |
3520 | bfd_vma low_pc = 0; |
3521 | bfd_vma high_pc = 0; | |
99b06c60 | 3522 | bfd *abfd = file->bfd_ptr; |
c49ead2f | 3523 | bfd_boolean high_pc_relative = FALSE; |
0041f7df | 3524 | enum dwarf_unit_type unit_type; |
3fde5a36 | 3525 | |
dbb3fbbb | 3526 | version = read_2_bytes (abfd, info_ptr, end_ptr); |
252b5132 | 3527 | info_ptr += 2; |
0041f7df | 3528 | if (version < 2 || version > 5) |
252b5132 | 3529 | { |
67f101ee NC |
3530 | /* PR 19872: A version number of 0 probably means that there is padding |
3531 | at the end of the .debug_info section. Gold puts it there when | |
3532 | performing an incremental link, for example. So do not generate | |
3533 | an error, just return a NULL. */ | |
3534 | if (version) | |
3535 | { | |
4eca0228 | 3536 | _bfd_error_handler |
9793eb77 AM |
3537 | (_("DWARF error: found dwarf version '%u', this reader" |
3538 | " only handles version 2, 3, 4 and 5 information"), version); | |
67f101ee NC |
3539 | bfd_set_error (bfd_error_bad_value); |
3540 | } | |
3541 | return NULL; | |
252b5132 RH |
3542 | } |
3543 | ||
0041f7df JK |
3544 | if (version < 5) |
3545 | unit_type = DW_UT_compile; | |
3546 | else | |
3547 | { | |
3548 | unit_type = read_1_byte (abfd, info_ptr, end_ptr); | |
3549 | info_ptr += 1; | |
3550 | ||
3551 | addr_size = read_1_byte (abfd, info_ptr, end_ptr); | |
3552 | info_ptr += 1; | |
3553 | } | |
3554 | ||
3555 | BFD_ASSERT (offset_size == 4 || offset_size == 8); | |
3556 | if (offset_size == 4) | |
3557 | abbrev_offset = read_4_bytes (abfd, info_ptr, end_ptr); | |
3558 | else | |
3559 | abbrev_offset = read_8_bytes (abfd, info_ptr, end_ptr); | |
3560 | info_ptr += offset_size; | |
3561 | ||
3562 | if (version < 5) | |
3563 | { | |
3564 | addr_size = read_1_byte (abfd, info_ptr, end_ptr); | |
3565 | info_ptr += 1; | |
3566 | } | |
3567 | ||
3568 | if (unit_type == DW_UT_type) | |
3569 | { | |
3570 | /* Skip type signature. */ | |
3571 | info_ptr += 8; | |
3572 | ||
3573 | /* Skip type offset. */ | |
3574 | info_ptr += offset_size; | |
3575 | } | |
3576 | ||
252b5132 RH |
3577 | if (addr_size > sizeof (bfd_vma)) |
3578 | { | |
4eca0228 | 3579 | _bfd_error_handler |
695344c0 | 3580 | /* xgettext: c-format */ |
9793eb77 AM |
3581 | (_("DWARF error: found address size '%u', this reader" |
3582 | " can not handle sizes greater than '%u'"), | |
a2a50954 AM |
3583 | addr_size, |
3584 | (unsigned int) sizeof (bfd_vma)); | |
252b5132 | 3585 | bfd_set_error (bfd_error_bad_value); |
67f101ee | 3586 | return NULL; |
252b5132 RH |
3587 | } |
3588 | ||
ecb651f0 | 3589 | if (addr_size != 2 && addr_size != 4 && addr_size != 8) |
252b5132 | 3590 | { |
4eca0228 | 3591 | _bfd_error_handler |
9793eb77 AM |
3592 | ("DWARF error: found address size '%u', this reader" |
3593 | " can only handle address sizes '2', '4' and '8'", addr_size); | |
252b5132 | 3594 | bfd_set_error (bfd_error_bad_value); |
67f101ee | 3595 | return NULL; |
252b5132 RH |
3596 | } |
3597 | ||
a092b084 | 3598 | /* Read the abbrevs for this compilation unit into a table. */ |
99b06c60 | 3599 | abbrevs = read_abbrevs (abfd, abbrev_offset, stash, file); |
252b5132 | 3600 | if (! abbrevs) |
67f101ee | 3601 | return NULL; |
252b5132 | 3602 | |
4265548c PA |
3603 | abbrev_number = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read, |
3604 | FALSE, end_ptr); | |
252b5132 RH |
3605 | info_ptr += bytes_read; |
3606 | if (! abbrev_number) | |
3607 | { | |
67f101ee NC |
3608 | /* PR 19872: An abbrev number of 0 probably means that there is padding |
3609 | at the end of the .debug_abbrev section. Gold puts it there when | |
3610 | performing an incremental link, for example. So do not generate | |
3611 | an error, just return a NULL. */ | |
3612 | return NULL; | |
252b5132 RH |
3613 | } |
3614 | ||
3615 | abbrev = lookup_abbrev (abbrev_number, abbrevs); | |
3616 | if (! abbrev) | |
3617 | { | |
9793eb77 | 3618 | _bfd_error_handler (_("DWARF error: could not find abbrev number %u"), |
4eca0228 | 3619 | abbrev_number); |
252b5132 | 3620 | bfd_set_error (bfd_error_bad_value); |
67f101ee | 3621 | return NULL; |
252b5132 | 3622 | } |
98591c73 | 3623 | |
dc810e39 | 3624 | amt = sizeof (struct comp_unit); |
a50b1753 | 3625 | unit = (struct comp_unit *) bfd_zalloc (abfd, amt); |
8af6b354 AM |
3626 | if (unit == NULL) |
3627 | return NULL; | |
252b5132 | 3628 | unit->abfd = abfd; |
5609a71e | 3629 | unit->version = version; |
98591c73 | 3630 | unit->addr_size = addr_size; |
d03ba2a1 | 3631 | unit->offset_size = offset_size; |
252b5132 RH |
3632 | unit->abbrevs = abbrevs; |
3633 | unit->end_ptr = end_ptr; | |
d03ba2a1 | 3634 | unit->stash = stash; |
99b06c60 | 3635 | unit->file = file; |
c0c28ab8 | 3636 | unit->info_ptr_unit = info_ptr_unit; |
252b5132 RH |
3637 | |
3638 | for (i = 0; i < abbrev->num_attrs; ++i) | |
3639 | { | |
dbb3fbbb | 3640 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr, end_ptr); |
8af6b354 AM |
3641 | if (info_ptr == NULL) |
3642 | return NULL; | |
252b5132 RH |
3643 | |
3644 | /* Store the data if it is of an attribute we want to keep in a | |
3645 | partial symbol table. */ | |
3646 | switch (attr.name) | |
3647 | { | |
3648 | case DW_AT_stmt_list: | |
3649 | unit->stmtlist = 1; | |
482e2e37 | 3650 | unit->line_offset = attr.u.val; |
252b5132 RH |
3651 | break; |
3652 | ||
3653 | case DW_AT_name: | |
11855d8a AM |
3654 | if (is_str_attr (attr.form)) |
3655 | unit->name = attr.u.str; | |
252b5132 RH |
3656 | break; |
3657 | ||
3658 | case DW_AT_low_pc: | |
a13afe8e FF |
3659 | low_pc = attr.u.val; |
3660 | /* If the compilation unit DIE has a DW_AT_low_pc attribute, | |
3661 | this is the base address to use when reading location | |
089e3718 | 3662 | lists or range lists. */ |
a2a50954 AM |
3663 | if (abbrev->tag == DW_TAG_compile_unit) |
3664 | unit->base_address = low_pc; | |
252b5132 RH |
3665 | break; |
3666 | ||
3667 | case DW_AT_high_pc: | |
a13afe8e | 3668 | high_pc = attr.u.val; |
c49ead2f | 3669 | high_pc_relative = attr.form != DW_FORM_addr; |
a13afe8e FF |
3670 | break; |
3671 | ||
3672 | case DW_AT_ranges: | |
8af6b354 AM |
3673 | if (!read_rangelist (unit, &unit->arange, attr.u.val)) |
3674 | return NULL; | |
252b5132 RH |
3675 | break; |
3676 | ||
3677 | case DW_AT_comp_dir: | |
3678 | { | |
f075ee0c | 3679 | char *comp_dir = attr.u.str; |
877a8638 NC |
3680 | |
3681 | /* PR 17512: file: 1fe726be. */ | |
3682 | if (! is_str_attr (attr.form)) | |
3683 | { | |
4eca0228 | 3684 | _bfd_error_handler |
9793eb77 | 3685 | (_("DWARF error: DW_AT_comp_dir attribute encountered with a non-string form")); |
877a8638 NC |
3686 | comp_dir = NULL; |
3687 | } | |
3688 | ||
252b5132 RH |
3689 | if (comp_dir) |
3690 | { | |
3691 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
3692 | directory, get rid of it. */ | |
818a27ac | 3693 | char *cp = strchr (comp_dir, ':'); |
252b5132 RH |
3694 | |
3695 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
3696 | comp_dir = cp + 1; | |
3697 | } | |
3698 | unit->comp_dir = comp_dir; | |
3699 | break; | |
3700 | } | |
3701 | ||
e00e8198 AM |
3702 | case DW_AT_language: |
3703 | unit->lang = attr.u.val; | |
3704 | break; | |
3705 | ||
252b5132 RH |
3706 | default: |
3707 | break; | |
3708 | } | |
3709 | } | |
c49ead2f MW |
3710 | if (high_pc_relative) |
3711 | high_pc += low_pc; | |
a13afe8e | 3712 | if (high_pc != 0) |
709d67f1 | 3713 | { |
a2a50954 | 3714 | if (!arange_add (unit, &unit->arange, low_pc, high_pc)) |
8af6b354 | 3715 | return NULL; |
709d67f1 | 3716 | } |
252b5132 RH |
3717 | |
3718 | unit->first_child_die_ptr = info_ptr; | |
3719 | return unit; | |
3720 | } | |
3721 | ||
6dd55cb7 L |
3722 | /* Return TRUE if UNIT may contain the address given by ADDR. When |
3723 | there are functions written entirely with inline asm statements, the | |
3724 | range info in the compilation unit header may not be correct. We | |
3725 | need to consult the line info table to see if a compilation unit | |
3726 | really contains the given address. */ | |
252b5132 | 3727 | |
b34976b6 | 3728 | static bfd_boolean |
818a27ac | 3729 | comp_unit_contains_address (struct comp_unit *unit, bfd_vma addr) |
252b5132 | 3730 | { |
709d67f1 AM |
3731 | struct arange *arange; |
3732 | ||
3733 | if (unit->error) | |
3734 | return FALSE; | |
3735 | ||
3736 | arange = &unit->arange; | |
3737 | do | |
3738 | { | |
3739 | if (addr >= arange->low && addr < arange->high) | |
3740 | return TRUE; | |
3741 | arange = arange->next; | |
3742 | } | |
3743 | while (arange); | |
3744 | ||
3745 | return FALSE; | |
252b5132 RH |
3746 | } |
3747 | ||
252b5132 RH |
3748 | /* If UNIT contains ADDR, set the output parameters to the values for |
3749 | the line containing ADDR. The output parameters, FILENAME_PTR, | |
e00e8198 | 3750 | FUNCTION_PTR, and LINENUMBER_PTR, are pointers to the objects |
98591c73 | 3751 | to be filled in. |
252b5132 | 3752 | |
240d6706 NC |
3753 | Returns the range of addresses covered by the entry that was used |
3754 | to fill in *LINENUMBER_PTR or 0 if it was not filled in. */ | |
252b5132 | 3755 | |
240d6706 | 3756 | static bfd_vma |
818a27ac AM |
3757 | comp_unit_find_nearest_line (struct comp_unit *unit, |
3758 | bfd_vma addr, | |
3759 | const char **filename_ptr, | |
e00e8198 | 3760 | struct funcinfo **function_ptr, |
818a27ac | 3761 | unsigned int *linenumber_ptr, |
99b06c60 | 3762 | unsigned int *discriminator_ptr) |
252b5132 | 3763 | { |
b34976b6 | 3764 | bfd_boolean func_p; |
98591c73 | 3765 | |
99b06c60 | 3766 | if (!comp_unit_maybe_decode_line_info (unit)) |
b34976b6 | 3767 | return FALSE; |
252b5132 | 3768 | |
e00e8198 AM |
3769 | *function_ptr = NULL; |
3770 | func_p = lookup_address_in_function_table (unit, addr, function_ptr); | |
3771 | if (func_p && (*function_ptr)->tag == DW_TAG_inlined_subroutine) | |
99b06c60 | 3772 | unit->stash->inliner_chain = *function_ptr; |
240d6706 NC |
3773 | |
3774 | return lookup_address_in_line_info_table (unit->line_table, addr, | |
3775 | filename_ptr, | |
3776 | linenumber_ptr, | |
3777 | discriminator_ptr); | |
252b5132 RH |
3778 | } |
3779 | ||
bd210d54 NC |
3780 | /* Check to see if line info is already decoded in a comp_unit. |
3781 | If not, decode it. Returns TRUE if no errors were encountered; | |
5420f73d L |
3782 | FALSE otherwise. */ |
3783 | ||
3784 | static bfd_boolean | |
99b06c60 | 3785 | comp_unit_maybe_decode_line_info (struct comp_unit *unit) |
5420f73d L |
3786 | { |
3787 | if (unit->error) | |
3788 | return FALSE; | |
3789 | ||
3790 | if (! unit->line_table) | |
3791 | { | |
3792 | if (! unit->stmtlist) | |
3793 | { | |
3794 | unit->error = 1; | |
3795 | return FALSE; | |
3796 | } | |
3797 | ||
99b06c60 | 3798 | unit->line_table = decode_line_info (unit); |
5420f73d L |
3799 | |
3800 | if (! unit->line_table) | |
3801 | { | |
3802 | unit->error = 1; | |
3803 | return FALSE; | |
3804 | } | |
3805 | ||
3806 | if (unit->first_child_die_ptr < unit->end_ptr | |
3807 | && ! scan_unit_for_symbols (unit)) | |
3808 | { | |
3809 | unit->error = 1; | |
3810 | return FALSE; | |
3811 | } | |
3812 | } | |
3813 | ||
bd210d54 NC |
3814 | return TRUE; |
3815 | } | |
3816 | ||
3817 | /* If UNIT contains SYM at ADDR, set the output parameters to the | |
3818 | values for the line containing SYM. The output parameters, | |
3819 | FILENAME_PTR, and LINENUMBER_PTR, are pointers to the objects to be | |
3820 | filled in. | |
3821 | ||
3822 | Return TRUE if UNIT contains SYM, and no errors were encountered; | |
3823 | FALSE otherwise. */ | |
3824 | ||
3825 | static bfd_boolean | |
3826 | comp_unit_find_line (struct comp_unit *unit, | |
3827 | asymbol *sym, | |
3828 | bfd_vma addr, | |
3829 | const char **filename_ptr, | |
99b06c60 | 3830 | unsigned int *linenumber_ptr) |
bd210d54 | 3831 | { |
99b06c60 | 3832 | if (!comp_unit_maybe_decode_line_info (unit)) |
bd210d54 NC |
3833 | return FALSE; |
3834 | ||
5420f73d L |
3835 | if (sym->flags & BSF_FUNCTION) |
3836 | return lookup_symbol_in_function_table (unit, sym, addr, | |
3837 | filename_ptr, | |
3838 | linenumber_ptr); | |
bd210d54 NC |
3839 | |
3840 | return lookup_symbol_in_variable_table (unit, sym, addr, | |
3841 | filename_ptr, | |
3842 | linenumber_ptr); | |
3843 | } | |
3844 | ||
3845 | static struct funcinfo * | |
3846 | reverse_funcinfo_list (struct funcinfo *head) | |
3847 | { | |
3848 | struct funcinfo *rhead; | |
3849 | struct funcinfo *temp; | |
3850 | ||
3851 | for (rhead = NULL; head; head = temp) | |
3852 | { | |
3853 | temp = head->prev_func; | |
3854 | head->prev_func = rhead; | |
3855 | rhead = head; | |
3856 | } | |
3857 | return rhead; | |
3858 | } | |
3859 | ||
3860 | static struct varinfo * | |
3861 | reverse_varinfo_list (struct varinfo *head) | |
3862 | { | |
3863 | struct varinfo *rhead; | |
3864 | struct varinfo *temp; | |
3865 | ||
3866 | for (rhead = NULL; head; head = temp) | |
3867 | { | |
3868 | temp = head->prev_var; | |
3869 | head->prev_var = rhead; | |
3870 | rhead = head; | |
3871 | } | |
3872 | return rhead; | |
3873 | } | |
3874 | ||
3875 | /* Extract all interesting funcinfos and varinfos of a compilation | |
3876 | unit into hash tables for faster lookup. Returns TRUE if no | |
3877 | errors were enountered; FALSE otherwise. */ | |
3878 | ||
3879 | static bfd_boolean | |
3880 | comp_unit_hash_info (struct dwarf2_debug *stash, | |
3881 | struct comp_unit *unit, | |
3882 | struct info_hash_table *funcinfo_hash_table, | |
3883 | struct info_hash_table *varinfo_hash_table) | |
3884 | { | |
3885 | struct funcinfo* each_func; | |
3886 | struct varinfo* each_var; | |
3887 | bfd_boolean okay = TRUE; | |
3888 | ||
3889 | BFD_ASSERT (stash->info_hash_status != STASH_INFO_HASH_DISABLED); | |
3890 | ||
99b06c60 | 3891 | if (!comp_unit_maybe_decode_line_info (unit)) |
bd210d54 NC |
3892 | return FALSE; |
3893 | ||
3894 | BFD_ASSERT (!unit->cached); | |
3895 | ||
3896 | /* To preserve the original search order, we went to visit the function | |
3897 | infos in the reversed order of the list. However, making the list | |
3898 | bi-directional use quite a bit of extra memory. So we reverse | |
3899 | the list first, traverse the list in the now reversed order and | |
3900 | finally reverse the list again to get back the original order. */ | |
3901 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
3902 | for (each_func = unit->function_table; | |
3903 | each_func && okay; | |
3904 | each_func = each_func->prev_func) | |
3905 | { | |
089e3718 | 3906 | /* Skip nameless functions. */ |
bd210d54 NC |
3907 | if (each_func->name) |
3908 | /* There is no need to copy name string into hash table as | |
3909 | name string is either in the dwarf string buffer or | |
3910 | info in the stash. */ | |
3911 | okay = insert_info_hash_table (funcinfo_hash_table, each_func->name, | |
3912 | (void*) each_func, FALSE); | |
3913 | } | |
3914 | unit->function_table = reverse_funcinfo_list (unit->function_table); | |
3915 | if (!okay) | |
3916 | return FALSE; | |
3917 | ||
3918 | /* We do the same for variable infos. */ | |
3919 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
3920 | for (each_var = unit->variable_table; | |
3921 | each_var && okay; | |
3922 | each_var = each_var->prev_var) | |
3923 | { | |
3924 | /* Skip stack vars and vars with no files or names. */ | |
f3a08f77 | 3925 | if (! each_var->stack |
bd210d54 NC |
3926 | && each_var->file != NULL |
3927 | && each_var->name != NULL) | |
3928 | /* There is no need to copy name string into hash table as | |
3929 | name string is either in the dwarf string buffer or | |
3930 | info in the stash. */ | |
3931 | okay = insert_info_hash_table (varinfo_hash_table, each_var->name, | |
3932 | (void*) each_var, FALSE); | |
3933 | } | |
3934 | ||
3935 | unit->variable_table = reverse_varinfo_list (unit->variable_table); | |
3936 | unit->cached = TRUE; | |
3937 | return okay; | |
5420f73d L |
3938 | } |
3939 | ||
e2f6d277 NC |
3940 | /* Locate a section in a BFD containing debugging info. The search starts |
3941 | from the section after AFTER_SEC, or from the first section in the BFD if | |
3942 | AFTER_SEC is NULL. The search works by examining the names of the | |
fc28f9aa TG |
3943 | sections. There are three permissiable names. The first two are given |
3944 | by DEBUG_SECTIONS[debug_info] (whose standard DWARF2 names are .debug_info | |
3945 | and .zdebug_info). The third is a prefix .gnu.linkonce.wi. | |
e2f6d277 NC |
3946 | This is a variation on the .debug_info section which has a checksum |
3947 | describing the contents appended onto the name. This allows the linker to | |
3948 | identify and discard duplicate debugging sections for different | |
3949 | compilation units. */ | |
a092b084 NC |
3950 | #define GNU_LINKONCE_INFO ".gnu.linkonce.wi." |
3951 | ||
3952 | static asection * | |
fc28f9aa | 3953 | find_debug_info (bfd *abfd, const struct dwarf_debug_section *debug_sections, |
93ee1e36 | 3954 | asection *after_sec) |
a092b084 | 3955 | { |
a2a50954 AM |
3956 | asection *msec; |
3957 | const char *look; | |
3958 | ||
3959 | if (after_sec == NULL) | |
3960 | { | |
3961 | look = debug_sections[debug_info].uncompressed_name; | |
3962 | msec = bfd_get_section_by_name (abfd, look); | |
3963 | if (msec != NULL) | |
3964 | return msec; | |
a092b084 | 3965 | |
a2a50954 AM |
3966 | look = debug_sections[debug_info].compressed_name; |
3967 | if (look != NULL) | |
3968 | { | |
3969 | msec = bfd_get_section_by_name (abfd, look); | |
3970 | if (msec != NULL) | |
3971 | return msec; | |
3972 | } | |
a092b084 | 3973 | |
a2a50954 AM |
3974 | for (msec = abfd->sections; msec != NULL; msec = msec->next) |
3975 | if (CONST_STRNEQ (msec->name, GNU_LINKONCE_INFO)) | |
3976 | return msec; | |
3977 | ||
3978 | return NULL; | |
3979 | } | |
3980 | ||
3981 | for (msec = after_sec->next; msec != NULL; msec = msec->next) | |
a092b084 | 3982 | { |
a2a50954 AM |
3983 | look = debug_sections[debug_info].uncompressed_name; |
3984 | if (strcmp (msec->name, look) == 0) | |
a092b084 NC |
3985 | return msec; |
3986 | ||
a2a50954 AM |
3987 | look = debug_sections[debug_info].compressed_name; |
3988 | if (look != NULL && strcmp (msec->name, look) == 0) | |
1b315056 CS |
3989 | return msec; |
3990 | ||
0112cd26 | 3991 | if (CONST_STRNEQ (msec->name, GNU_LINKONCE_INFO)) |
a092b084 | 3992 | return msec; |
a092b084 NC |
3993 | } |
3994 | ||
3995 | return NULL; | |
3996 | } | |
3997 | ||
93ee1e36 AM |
3998 | /* Transfer VMAs from object file to separate debug file. */ |
3999 | ||
4000 | static void | |
4001 | set_debug_vma (bfd *orig_bfd, bfd *debug_bfd) | |
4002 | { | |
4003 | asection *s, *d; | |
4004 | ||
4005 | for (s = orig_bfd->sections, d = debug_bfd->sections; | |
4006 | s != NULL && d != NULL; | |
4007 | s = s->next, d = d->next) | |
4008 | { | |
4009 | if ((d->flags & SEC_DEBUGGING) != 0) | |
4010 | break; | |
4011 | /* ??? Assumes 1-1 correspondence between sections in the | |
4012 | two files. */ | |
4013 | if (strcmp (s->name, d->name) == 0) | |
4014 | { | |
4015 | d->output_section = s->output_section; | |
4016 | d->output_offset = s->output_offset; | |
4017 | d->vma = s->vma; | |
4018 | } | |
4019 | } | |
4020 | } | |
4021 | ||
e7679060 AM |
4022 | /* If the dwarf2 info was found in a separate debug file, return the |
4023 | debug file section corresponding to the section in the original file | |
4024 | and the debug file symbols. */ | |
4025 | ||
4026 | static void | |
4027 | _bfd_dwarf2_stash_syms (struct dwarf2_debug *stash, bfd *abfd, | |
4028 | asection **sec, asymbol ***syms) | |
4029 | { | |
99b06c60 | 4030 | if (stash->f.bfd_ptr != abfd) |
e7679060 AM |
4031 | { |
4032 | asection *s, *d; | |
4033 | ||
4034 | if (*sec == NULL) | |
4035 | { | |
99b06c60 | 4036 | *syms = stash->f.syms; |
e7679060 AM |
4037 | return; |
4038 | } | |
4039 | ||
99b06c60 | 4040 | for (s = abfd->sections, d = stash->f.bfd_ptr->sections; |
e7679060 AM |
4041 | s != NULL && d != NULL; |
4042 | s = s->next, d = d->next) | |
4043 | { | |
4044 | if ((d->flags & SEC_DEBUGGING) != 0) | |
4045 | break; | |
4046 | if (s == *sec | |
4047 | && strcmp (s->name, d->name) == 0) | |
4048 | { | |
4049 | *sec = d; | |
99b06c60 | 4050 | *syms = stash->f.syms; |
7f3bf384 | 4051 | break; |
e7679060 AM |
4052 | } |
4053 | } | |
4054 | } | |
4055 | } | |
4056 | ||
5609a71e | 4057 | /* Unset vmas for adjusted sections in STASH. */ |
d4c32a81 L |
4058 | |
4059 | static void | |
4060 | unset_sections (struct dwarf2_debug *stash) | |
4061 | { | |
93ee1e36 | 4062 | int i; |
5609a71e | 4063 | struct adjusted_section *p; |
d4c32a81 | 4064 | |
5609a71e DJ |
4065 | i = stash->adjusted_section_count; |
4066 | p = stash->adjusted_sections; | |
d4c32a81 L |
4067 | for (; i > 0; i--, p++) |
4068 | p->section->vma = 0; | |
4069 | } | |
4070 | ||
93ee1e36 AM |
4071 | /* Set VMAs for allocated and .debug_info sections in ORIG_BFD, a |
4072 | relocatable object file. VMAs are normally all zero in relocatable | |
4073 | object files, so if we want to distinguish locations in sections by | |
4074 | address we need to set VMAs so the sections do not overlap. We | |
4075 | also set VMA on .debug_info so that when we have multiple | |
4076 | .debug_info sections (or the linkonce variant) they also do not | |
4077 | overlap. The multiple .debug_info sections make up a single | |
4078 | logical section. ??? We should probably do the same for other | |
4079 | debug sections. */ | |
35ccda9e L |
4080 | |
4081 | static bfd_boolean | |
93ee1e36 | 4082 | place_sections (bfd *orig_bfd, struct dwarf2_debug *stash) |
35ccda9e | 4083 | { |
93ee1e36 | 4084 | bfd *abfd; |
5609a71e | 4085 | struct adjusted_section *p; |
93ee1e36 AM |
4086 | int i; |
4087 | const char *debug_info_name; | |
d4c32a81 | 4088 | |
5609a71e | 4089 | if (stash->adjusted_section_count != 0) |
35ccda9e | 4090 | { |
5609a71e DJ |
4091 | i = stash->adjusted_section_count; |
4092 | p = stash->adjusted_sections; | |
d4c32a81 L |
4093 | for (; i > 0; i--, p++) |
4094 | p->section->vma = p->adj_vma; | |
93ee1e36 | 4095 | return TRUE; |
d4c32a81 | 4096 | } |
93ee1e36 AM |
4097 | |
4098 | debug_info_name = stash->debug_sections[debug_info].uncompressed_name; | |
4099 | i = 0; | |
4100 | abfd = orig_bfd; | |
4101 | while (1) | |
d4c32a81 L |
4102 | { |
4103 | asection *sect; | |
35ccda9e | 4104 | |
d4c32a81 | 4105 | for (sect = abfd->sections; sect != NULL; sect = sect->next) |
35ccda9e | 4106 | { |
5609a71e DJ |
4107 | int is_debug_info; |
4108 | ||
cd0449ab | 4109 | if ((sect->output_section != NULL |
93ee1e36 AM |
4110 | && sect->output_section != sect |
4111 | && (sect->flags & SEC_DEBUGGING) == 0) | |
cd0449ab | 4112 | || sect->vma != 0) |
5609a71e DJ |
4113 | continue; |
4114 | ||
93ee1e36 AM |
4115 | is_debug_info = (strcmp (sect->name, debug_info_name) == 0 |
4116 | || CONST_STRNEQ (sect->name, GNU_LINKONCE_INFO)); | |
d4c32a81 | 4117 | |
93ee1e36 AM |
4118 | if (!((sect->flags & SEC_ALLOC) != 0 && abfd == orig_bfd) |
4119 | && !is_debug_info) | |
d4c32a81 L |
4120 | continue; |
4121 | ||
4122 | i++; | |
4123 | } | |
99b06c60 | 4124 | if (abfd == stash->f.bfd_ptr) |
93ee1e36 | 4125 | break; |
99b06c60 | 4126 | abfd = stash->f.bfd_ptr; |
93ee1e36 AM |
4127 | } |
4128 | ||
4129 | if (i <= 1) | |
4130 | stash->adjusted_section_count = -1; | |
4131 | else | |
4132 | { | |
4133 | bfd_vma last_vma = 0, last_dwarf = 0; | |
986f0783 | 4134 | size_t amt = i * sizeof (struct adjusted_section); |
d4c32a81 | 4135 | |
93ee1e36 AM |
4136 | p = (struct adjusted_section *) bfd_malloc (amt); |
4137 | if (p == NULL) | |
d4c32a81 L |
4138 | return FALSE; |
4139 | ||
5609a71e DJ |
4140 | stash->adjusted_sections = p; |
4141 | stash->adjusted_section_count = i; | |
d4c32a81 | 4142 | |
93ee1e36 AM |
4143 | abfd = orig_bfd; |
4144 | while (1) | |
d4c32a81 | 4145 | { |
93ee1e36 | 4146 | asection *sect; |
d4c32a81 | 4147 | |
93ee1e36 AM |
4148 | for (sect = abfd->sections; sect != NULL; sect = sect->next) |
4149 | { | |
4150 | bfd_size_type sz; | |
4151 | int is_debug_info; | |
5609a71e | 4152 | |
93ee1e36 AM |
4153 | if ((sect->output_section != NULL |
4154 | && sect->output_section != sect | |
4155 | && (sect->flags & SEC_DEBUGGING) == 0) | |
4156 | || sect->vma != 0) | |
4157 | continue; | |
5609a71e | 4158 | |
93ee1e36 AM |
4159 | is_debug_info = (strcmp (sect->name, debug_info_name) == 0 |
4160 | || CONST_STRNEQ (sect->name, GNU_LINKONCE_INFO)); | |
d4c32a81 | 4161 | |
93ee1e36 AM |
4162 | if (!((sect->flags & SEC_ALLOC) != 0 && abfd == orig_bfd) |
4163 | && !is_debug_info) | |
4164 | continue; | |
d4c32a81 | 4165 | |
93ee1e36 | 4166 | sz = sect->rawsize ? sect->rawsize : sect->size; |
5609a71e | 4167 | |
93ee1e36 AM |
4168 | if (is_debug_info) |
4169 | { | |
4170 | BFD_ASSERT (sect->alignment_power == 0); | |
4171 | sect->vma = last_dwarf; | |
4172 | last_dwarf += sz; | |
4173 | } | |
4174 | else | |
4175 | { | |
4176 | /* Align the new address to the current section | |
4177 | alignment. */ | |
4178 | last_vma = ((last_vma | |
29f628db DV |
4179 | + ~(-((bfd_vma) 1 << sect->alignment_power))) |
4180 | & (-((bfd_vma) 1 << sect->alignment_power))); | |
93ee1e36 AM |
4181 | sect->vma = last_vma; |
4182 | last_vma += sz; | |
4183 | } | |
d4c32a81 | 4184 | |
93ee1e36 AM |
4185 | p->section = sect; |
4186 | p->adj_vma = sect->vma; | |
4187 | p++; | |
4188 | } | |
99b06c60 | 4189 | if (abfd == stash->f.bfd_ptr) |
93ee1e36 | 4190 | break; |
99b06c60 | 4191 | abfd = stash->f.bfd_ptr; |
35ccda9e L |
4192 | } |
4193 | } | |
4194 | ||
99b06c60 AM |
4195 | if (orig_bfd != stash->f.bfd_ptr) |
4196 | set_debug_vma (orig_bfd, stash->f.bfd_ptr); | |
93ee1e36 | 4197 | |
35ccda9e L |
4198 | return TRUE; |
4199 | } | |
4200 | ||
bd210d54 NC |
4201 | /* Look up a funcinfo by name using the given info hash table. If found, |
4202 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
4203 | ||
4204 | This function returns TRUE if a funcinfo that matches the given symbol | |
4205 | and address is found with any error; otherwise it returns FALSE. */ | |
4206 | ||
4207 | static bfd_boolean | |
4208 | info_hash_lookup_funcinfo (struct info_hash_table *hash_table, | |
4209 | asymbol *sym, | |
4210 | bfd_vma addr, | |
4211 | const char **filename_ptr, | |
4212 | unsigned int *linenumber_ptr) | |
4213 | { | |
4214 | struct funcinfo* each_func; | |
4215 | struct funcinfo* best_fit = NULL; | |
4ba3b326 | 4216 | bfd_vma best_fit_len = 0; |
bd210d54 NC |
4217 | struct info_list_node *node; |
4218 | struct arange *arange; | |
4219 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 4220 | asection *sec = bfd_asymbol_section (sym); |
bd210d54 NC |
4221 | |
4222 | for (node = lookup_info_hash_table (hash_table, name); | |
4223 | node; | |
4224 | node = node->next) | |
4225 | { | |
a50b1753 | 4226 | each_func = (struct funcinfo *) node->info; |
bd210d54 NC |
4227 | for (arange = &each_func->arange; |
4228 | arange; | |
4229 | arange = arange->next) | |
4230 | { | |
4231 | if ((!each_func->sec || each_func->sec == sec) | |
4232 | && addr >= arange->low | |
4233 | && addr < arange->high | |
4234 | && (!best_fit | |
4ba3b326 TG |
4235 | || arange->high - arange->low < best_fit_len)) |
4236 | { | |
4237 | best_fit = each_func; | |
4238 | best_fit_len = arange->high - arange->low; | |
4239 | } | |
bd210d54 NC |
4240 | } |
4241 | } | |
4242 | ||
4243 | if (best_fit) | |
4244 | { | |
4245 | best_fit->sec = sec; | |
4246 | *filename_ptr = best_fit->file; | |
4247 | *linenumber_ptr = best_fit->line; | |
4248 | return TRUE; | |
4249 | } | |
4250 | ||
4251 | return FALSE; | |
4252 | } | |
4253 | ||
4254 | /* Look up a varinfo by name using the given info hash table. If found, | |
4255 | also update the locations pointed to by filename_ptr and linenumber_ptr. | |
4256 | ||
4257 | This function returns TRUE if a varinfo that matches the given symbol | |
4258 | and address is found with any error; otherwise it returns FALSE. */ | |
4259 | ||
4260 | static bfd_boolean | |
4261 | info_hash_lookup_varinfo (struct info_hash_table *hash_table, | |
4262 | asymbol *sym, | |
4263 | bfd_vma addr, | |
4264 | const char **filename_ptr, | |
4265 | unsigned int *linenumber_ptr) | |
4266 | { | |
4267 | const char *name = bfd_asymbol_name (sym); | |
e6f7f6d1 | 4268 | asection *sec = bfd_asymbol_section (sym); |
bd210d54 NC |
4269 | struct varinfo* each; |
4270 | struct info_list_node *node; | |
4271 | ||
4272 | for (node = lookup_info_hash_table (hash_table, name); | |
4273 | node; | |
4274 | node = node->next) | |
4275 | { | |
a50b1753 | 4276 | each = (struct varinfo *) node->info; |
bd210d54 NC |
4277 | if (each->addr == addr |
4278 | && (!each->sec || each->sec == sec)) | |
4279 | { | |
4280 | each->sec = sec; | |
4281 | *filename_ptr = each->file; | |
4282 | *linenumber_ptr = each->line; | |
4283 | return TRUE; | |
4284 | } | |
4285 | } | |
4286 | ||
4287 | return FALSE; | |
4288 | } | |
4289 | ||
4290 | /* Update the funcinfo and varinfo info hash tables if they are | |
4291 | not up to date. Returns TRUE if there is no error; otherwise | |
4292 | returns FALSE and disable the info hash tables. */ | |
4293 | ||
4294 | static bfd_boolean | |
4295 | stash_maybe_update_info_hash_tables (struct dwarf2_debug *stash) | |
4296 | { | |
4297 | struct comp_unit *each; | |
4298 | ||
4299 | /* Exit if hash tables are up-to-date. */ | |
99b06c60 | 4300 | if (stash->f.all_comp_units == stash->hash_units_head) |
bd210d54 NC |
4301 | return TRUE; |
4302 | ||
4303 | if (stash->hash_units_head) | |
4304 | each = stash->hash_units_head->prev_unit; | |
4305 | else | |
99b06c60 | 4306 | each = stash->f.last_comp_unit; |
bd210d54 NC |
4307 | |
4308 | while (each) | |
4309 | { | |
4310 | if (!comp_unit_hash_info (stash, each, stash->funcinfo_hash_table, | |
4311 | stash->varinfo_hash_table)) | |
4312 | { | |
4313 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
4314 | return FALSE; | |
4315 | } | |
4316 | each = each->prev_unit; | |
4317 | } | |
4318 | ||
99b06c60 | 4319 | stash->hash_units_head = stash->f.all_comp_units; |
bd210d54 NC |
4320 | return TRUE; |
4321 | } | |
4322 | ||
089e3718 | 4323 | /* Check consistency of info hash tables. This is for debugging only. */ |
bd210d54 NC |
4324 | |
4325 | static void ATTRIBUTE_UNUSED | |
4326 | stash_verify_info_hash_table (struct dwarf2_debug *stash) | |
4327 | { | |
4328 | struct comp_unit *each_unit; | |
4329 | struct funcinfo *each_func; | |
4330 | struct varinfo *each_var; | |
4331 | struct info_list_node *node; | |
4332 | bfd_boolean found; | |
4333 | ||
99b06c60 | 4334 | for (each_unit = stash->f.all_comp_units; |
bd210d54 NC |
4335 | each_unit; |
4336 | each_unit = each_unit->next_unit) | |
4337 | { | |
4338 | for (each_func = each_unit->function_table; | |
4339 | each_func; | |
4340 | each_func = each_func->prev_func) | |
4341 | { | |
4342 | if (!each_func->name) | |
4343 | continue; | |
4344 | node = lookup_info_hash_table (stash->funcinfo_hash_table, | |
4345 | each_func->name); | |
4346 | BFD_ASSERT (node); | |
4347 | found = FALSE; | |
4348 | while (node && !found) | |
4349 | { | |
4350 | found = node->info == each_func; | |
4351 | node = node->next; | |
4352 | } | |
4353 | BFD_ASSERT (found); | |
4354 | } | |
4355 | ||
4356 | for (each_var = each_unit->variable_table; | |
4357 | each_var; | |
4358 | each_var = each_var->prev_var) | |
4359 | { | |
4360 | if (!each_var->name || !each_var->file || each_var->stack) | |
4361 | continue; | |
4362 | node = lookup_info_hash_table (stash->varinfo_hash_table, | |
4363 | each_var->name); | |
4364 | BFD_ASSERT (node); | |
4365 | found = FALSE; | |
4366 | while (node && !found) | |
4367 | { | |
4368 | found = node->info == each_var; | |
4369 | node = node->next; | |
4370 | } | |
4371 | BFD_ASSERT (found); | |
4372 | } | |
4373 | } | |
4374 | } | |
4375 | ||
4376 | /* Check to see if we want to enable the info hash tables, which consume | |
4377 | quite a bit of memory. Currently we only check the number times | |
4378 | bfd_dwarf2_find_line is called. In the future, we may also want to | |
4379 | take the number of symbols into account. */ | |
4380 | ||
4381 | static void | |
4382 | stash_maybe_enable_info_hash_tables (bfd *abfd, struct dwarf2_debug *stash) | |
4383 | { | |
4384 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_OFF); | |
4385 | ||
4386 | if (stash->info_hash_count++ < STASH_INFO_HASH_TRIGGER) | |
4387 | return; | |
4388 | ||
4389 | /* FIXME: Maybe we should check the reduce_memory_overheads | |
4390 | and optimize fields in the bfd_link_info structure ? */ | |
4391 | ||
4392 | /* Create hash tables. */ | |
4393 | stash->funcinfo_hash_table = create_info_hash_table (abfd); | |
4394 | stash->varinfo_hash_table = create_info_hash_table (abfd); | |
4395 | if (!stash->funcinfo_hash_table || !stash->varinfo_hash_table) | |
4396 | { | |
4397 | /* Turn off info hashes if any allocation above fails. */ | |
4398 | stash->info_hash_status = STASH_INFO_HASH_DISABLED; | |
4399 | return; | |
4400 | } | |
4401 | /* We need a forced update so that the info hash tables will | |
4402 | be created even though there is no compilation unit. That | |
4403 | happens if STASH_INFO_HASH_TRIGGER is 0. */ | |
e168da45 MF |
4404 | if (stash_maybe_update_info_hash_tables (stash)) |
4405 | stash->info_hash_status = STASH_INFO_HASH_ON; | |
bd210d54 NC |
4406 | } |
4407 | ||
4408 | /* Find the file and line associated with a symbol and address using the | |
4409 | info hash tables of a stash. If there is a match, the function returns | |
4410 | TRUE and update the locations pointed to by filename_ptr and linenumber_ptr; | |
4411 | otherwise it returns FALSE. */ | |
4412 | ||
4413 | static bfd_boolean | |
4414 | stash_find_line_fast (struct dwarf2_debug *stash, | |
4415 | asymbol *sym, | |
4416 | bfd_vma addr, | |
4417 | const char **filename_ptr, | |
4418 | unsigned int *linenumber_ptr) | |
4419 | { | |
4420 | BFD_ASSERT (stash->info_hash_status == STASH_INFO_HASH_ON); | |
4421 | ||
4422 | if (sym->flags & BSF_FUNCTION) | |
4423 | return info_hash_lookup_funcinfo (stash->funcinfo_hash_table, sym, addr, | |
4424 | filename_ptr, linenumber_ptr); | |
4425 | return info_hash_lookup_varinfo (stash->varinfo_hash_table, sym, addr, | |
4426 | filename_ptr, linenumber_ptr); | |
4427 | } | |
4428 | ||
cd0449ab AM |
4429 | /* Save current section VMAs. */ |
4430 | ||
4431 | static bfd_boolean | |
4432 | save_section_vma (const bfd *abfd, struct dwarf2_debug *stash) | |
4433 | { | |
4434 | asection *s; | |
4435 | unsigned int i; | |
4436 | ||
4437 | if (abfd->section_count == 0) | |
4438 | return TRUE; | |
4439 | stash->sec_vma = bfd_malloc (sizeof (*stash->sec_vma) * abfd->section_count); | |
4440 | if (stash->sec_vma == NULL) | |
4441 | return FALSE; | |
d7f848c3 | 4442 | stash->sec_vma_count = abfd->section_count; |
0eb32b6e AM |
4443 | for (i = 0, s = abfd->sections; |
4444 | s != NULL && i < abfd->section_count; | |
4445 | i++, s = s->next) | |
cd0449ab AM |
4446 | { |
4447 | if (s->output_section != NULL) | |
4448 | stash->sec_vma[i] = s->output_section->vma + s->output_offset; | |
4449 | else | |
4450 | stash->sec_vma[i] = s->vma; | |
4451 | } | |
4452 | return TRUE; | |
4453 | } | |
4454 | ||
4455 | /* Compare current section VMAs against those at the time the stash | |
4456 | was created. If find_nearest_line is used in linker warnings or | |
4457 | errors early in the link process, the debug info stash will be | |
4458 | invalid for later calls. This is because we relocate debug info | |
4459 | sections, so the stashed section contents depend on symbol values, | |
4460 | which in turn depend on section VMAs. */ | |
4461 | ||
4462 | static bfd_boolean | |
4463 | section_vma_same (const bfd *abfd, const struct dwarf2_debug *stash) | |
4464 | { | |
4465 | asection *s; | |
4466 | unsigned int i; | |
4467 | ||
d7f848c3 NC |
4468 | /* PR 24334: If the number of sections in ABFD has changed between |
4469 | when the stash was created and now, then we cannot trust the | |
4470 | stashed vma information. */ | |
4471 | if (abfd->section_count != stash->sec_vma_count) | |
4472 | return FALSE; | |
4b24dd1a | 4473 | |
0eb32b6e AM |
4474 | for (i = 0, s = abfd->sections; |
4475 | s != NULL && i < abfd->section_count; | |
4476 | i++, s = s->next) | |
cd0449ab AM |
4477 | { |
4478 | bfd_vma vma; | |
4479 | ||
4480 | if (s->output_section != NULL) | |
4481 | vma = s->output_section->vma + s->output_offset; | |
4482 | else | |
4483 | vma = s->vma; | |
4484 | if (vma != stash->sec_vma[i]) | |
4485 | return FALSE; | |
4486 | } | |
4487 | return TRUE; | |
4488 | } | |
4489 | ||
2ca7691a TG |
4490 | /* Read debug information from DEBUG_BFD when DEBUG_BFD is specified. |
4491 | If DEBUG_BFD is not specified, we read debug information from ABFD | |
4492 | or its gnu_debuglink. The results will be stored in PINFO. | |
4493 | The function returns TRUE iff debug information is ready. */ | |
4494 | ||
4495 | bfd_boolean | |
4496 | _bfd_dwarf2_slurp_debug_info (bfd *abfd, bfd *debug_bfd, | |
93ee1e36 AM |
4497 | const struct dwarf_debug_section *debug_sections, |
4498 | asymbol **symbols, | |
4499 | void **pinfo, | |
4500 | bfd_boolean do_place) | |
2ca7691a | 4501 | { |
986f0783 | 4502 | size_t amt = sizeof (struct dwarf2_debug); |
2ca7691a TG |
4503 | bfd_size_type total_size; |
4504 | asection *msec; | |
4505 | struct dwarf2_debug *stash = (struct dwarf2_debug *) *pinfo; | |
4506 | ||
4507 | if (stash != NULL) | |
cd0449ab | 4508 | { |
90ed9b8b | 4509 | if (stash->orig_bfd == abfd |
07d6d2b8 AM |
4510 | && section_vma_same (abfd, stash)) |
4511 | { | |
4512 | /* Check that we did previously find some debug information | |
4513 | before attempting to make use of it. */ | |
99b06c60 | 4514 | if (stash->f.bfd_ptr != NULL) |
07d6d2b8 AM |
4515 | { |
4516 | if (do_place && !place_sections (abfd, stash)) | |
4517 | return FALSE; | |
4518 | return TRUE; | |
4519 | } | |
4520 | ||
4521 | return FALSE; | |
4522 | } | |
cd0449ab AM |
4523 | _bfd_dwarf2_cleanup_debug_info (abfd, pinfo); |
4524 | memset (stash, 0, amt); | |
4525 | } | |
4526 | else | |
4527 | { | |
4528 | stash = (struct dwarf2_debug *) bfd_zalloc (abfd, amt); | |
4529 | if (! stash) | |
4530 | return FALSE; | |
4531 | } | |
90ed9b8b | 4532 | stash->orig_bfd = abfd; |
2ca7691a | 4533 | stash->debug_sections = debug_sections; |
99b06c60 | 4534 | stash->f.syms = symbols; |
cd0449ab AM |
4535 | if (!save_section_vma (abfd, stash)) |
4536 | return FALSE; | |
2ca7691a | 4537 | |
e63ef095 AM |
4538 | stash->f.abbrev_offsets = htab_create_alloc (10, hash_abbrev, eq_abbrev, |
4539 | del_abbrev, calloc, free); | |
4540 | if (!stash->f.abbrev_offsets) | |
4541 | return FALSE; | |
4542 | ||
4543 | stash->alt.abbrev_offsets = htab_create_alloc (10, hash_abbrev, eq_abbrev, | |
4544 | del_abbrev, calloc, free); | |
4545 | if (!stash->alt.abbrev_offsets) | |
4546 | return FALSE; | |
4547 | ||
2ca7691a TG |
4548 | *pinfo = stash; |
4549 | ||
4550 | if (debug_bfd == NULL) | |
4551 | debug_bfd = abfd; | |
4552 | ||
4553 | msec = find_debug_info (debug_bfd, debug_sections, NULL); | |
4554 | if (msec == NULL && abfd == debug_bfd) | |
4555 | { | |
2425a30e NC |
4556 | char * debug_filename; |
4557 | ||
4558 | debug_filename = bfd_follow_build_id_debuglink (abfd, DEBUGDIR); | |
4559 | if (debug_filename == NULL) | |
4560 | debug_filename = bfd_follow_gnu_debuglink (abfd, DEBUGDIR); | |
2ca7691a TG |
4561 | |
4562 | if (debug_filename == NULL) | |
4563 | /* No dwarf2 info, and no gnu_debuglink to follow. | |
4564 | Note that at this point the stash has been allocated, but | |
4565 | contains zeros. This lets future calls to this function | |
4566 | fail more quickly. */ | |
4567 | return FALSE; | |
4568 | ||
22b31fea AM |
4569 | debug_bfd = bfd_openr (debug_filename, NULL); |
4570 | free (debug_filename); | |
4571 | if (debug_bfd == NULL) | |
4572 | /* FIXME: Should we report our failure to follow the debuglink ? */ | |
4573 | return FALSE; | |
4574 | ||
bf150a0b | 4575 | /* Set BFD_DECOMPRESS to decompress debug sections. */ |
22b31fea AM |
4576 | debug_bfd->flags |= BFD_DECOMPRESS; |
4577 | if (!bfd_check_format (debug_bfd, bfd_object) | |
2ca7691a | 4578 | || (msec = find_debug_info (debug_bfd, |
93ee1e36 AM |
4579 | debug_sections, NULL)) == NULL |
4580 | || !bfd_generic_link_read_symbols (debug_bfd)) | |
2ca7691a | 4581 | { |
22b31fea | 4582 | bfd_close (debug_bfd); |
2ca7691a TG |
4583 | return FALSE; |
4584 | } | |
93ee1e36 AM |
4585 | |
4586 | symbols = bfd_get_outsymbols (debug_bfd); | |
99b06c60 | 4587 | stash->f.syms = symbols; |
1c37913d | 4588 | stash->close_on_cleanup = TRUE; |
2ca7691a | 4589 | } |
99b06c60 | 4590 | stash->f.bfd_ptr = debug_bfd; |
2ca7691a | 4591 | |
93ee1e36 AM |
4592 | if (do_place |
4593 | && !place_sections (abfd, stash)) | |
4594 | return FALSE; | |
4595 | ||
2ca7691a TG |
4596 | /* There can be more than one DWARF2 info section in a BFD these |
4597 | days. First handle the easy case when there's only one. If | |
4598 | there's more than one, try case two: none of the sections is | |
4599 | compressed. In that case, read them all in and produce one | |
4600 | large stash. We do this in two passes - in the first pass we | |
4601 | just accumulate the section sizes, and in the second pass we | |
4602 | read in the section's contents. (The allows us to avoid | |
4603 | reallocing the data as we add sections to the stash.) If | |
4604 | some or all sections are compressed, then do things the slow | |
4605 | way, with a bunch of reallocs. */ | |
4606 | ||
4607 | if (! find_debug_info (debug_bfd, debug_sections, msec)) | |
4608 | { | |
4609 | /* Case 1: only one info section. */ | |
4610 | total_size = msec->size; | |
4611 | if (! read_section (debug_bfd, &stash->debug_sections[debug_info], | |
4612 | symbols, 0, | |
99b06c60 | 4613 | &stash->f.dwarf_info_buffer, &total_size)) |
2ca7691a TG |
4614 | return FALSE; |
4615 | } | |
4616 | else | |
4617 | { | |
4618 | /* Case 2: multiple sections. */ | |
4619 | for (total_size = 0; | |
4620 | msec; | |
4621 | msec = find_debug_info (debug_bfd, debug_sections, msec)) | |
336bfbeb AM |
4622 | { |
4623 | /* Catch PR25070 testcase overflowing size calculation here. */ | |
4624 | if (total_size + msec->size < total_size | |
4625 | || total_size + msec->size < msec->size) | |
4626 | { | |
4627 | bfd_set_error (bfd_error_no_memory); | |
4628 | return FALSE; | |
4629 | } | |
4630 | total_size += msec->size; | |
4631 | } | |
2ca7691a | 4632 | |
99b06c60 AM |
4633 | stash->f.dwarf_info_buffer = (bfd_byte *) bfd_malloc (total_size); |
4634 | if (stash->f.dwarf_info_buffer == NULL) | |
2ca7691a TG |
4635 | return FALSE; |
4636 | ||
4637 | total_size = 0; | |
4638 | for (msec = find_debug_info (debug_bfd, debug_sections, NULL); | |
4639 | msec; | |
4640 | msec = find_debug_info (debug_bfd, debug_sections, msec)) | |
4641 | { | |
4642 | bfd_size_type size; | |
4643 | ||
4644 | size = msec->size; | |
4645 | if (size == 0) | |
4646 | continue; | |
4647 | ||
4648 | if (!(bfd_simple_get_relocated_section_contents | |
99b06c60 | 4649 | (debug_bfd, msec, stash->f.dwarf_info_buffer + total_size, |
2ca7691a TG |
4650 | symbols))) |
4651 | return FALSE; | |
4652 | ||
4653 | total_size += size; | |
4654 | } | |
4655 | } | |
4656 | ||
99b06c60 AM |
4657 | stash->f.info_ptr = stash->f.dwarf_info_buffer; |
4658 | stash->f.dwarf_info_size = total_size; | |
2ca7691a TG |
4659 | return TRUE; |
4660 | } | |
4661 | ||
99b06c60 | 4662 | /* Parse the next DWARF2 compilation unit at FILE->INFO_PTR. */ |
dfc19da6 AM |
4663 | |
4664 | static struct comp_unit * | |
99b06c60 | 4665 | stash_comp_unit (struct dwarf2_debug *stash, struct dwarf2_debug_file *file) |
dfc19da6 AM |
4666 | { |
4667 | bfd_size_type length; | |
4668 | unsigned int offset_size; | |
99b06c60 AM |
4669 | bfd_byte *info_ptr_unit = file->info_ptr; |
4670 | bfd_byte *info_ptr_end = file->dwarf_info_buffer + file->dwarf_info_size; | |
dfc19da6 | 4671 | |
99b06c60 | 4672 | if (file->info_ptr >= info_ptr_end) |
dfc19da6 AM |
4673 | return NULL; |
4674 | ||
99b06c60 | 4675 | length = read_4_bytes (file->bfd_ptr, file->info_ptr, info_ptr_end); |
dfc19da6 AM |
4676 | /* A 0xffffff length is the DWARF3 way of indicating |
4677 | we use 64-bit offsets, instead of 32-bit offsets. */ | |
4678 | if (length == 0xffffffff) | |
4679 | { | |
4680 | offset_size = 8; | |
99b06c60 AM |
4681 | length = read_8_bytes (file->bfd_ptr, file->info_ptr + 4, |
4682 | info_ptr_end); | |
4683 | file->info_ptr += 12; | |
dfc19da6 AM |
4684 | } |
4685 | /* A zero length is the IRIX way of indicating 64-bit offsets, | |
4686 | mostly because the 64-bit length will generally fit in 32 | |
4687 | bits, and the endianness helps. */ | |
4688 | else if (length == 0) | |
4689 | { | |
4690 | offset_size = 8; | |
99b06c60 AM |
4691 | length = read_4_bytes (file->bfd_ptr, file->info_ptr + 4, |
4692 | info_ptr_end); | |
4693 | file->info_ptr += 8; | |
dfc19da6 AM |
4694 | } |
4695 | /* In the absence of the hints above, we assume 32-bit DWARF2 | |
4696 | offsets even for targets with 64-bit addresses, because: | |
4697 | a) most of the time these targets will not have generated | |
4698 | more than 2Gb of debug info and so will not need 64-bit | |
4699 | offsets, | |
4700 | and | |
4701 | b) if they do use 64-bit offsets but they are not using | |
4702 | the size hints that are tested for above then they are | |
4703 | not conforming to the DWARF3 standard anyway. */ | |
4704 | else | |
4705 | { | |
4706 | offset_size = 4; | |
99b06c60 | 4707 | file->info_ptr += 4; |
dfc19da6 AM |
4708 | } |
4709 | ||
4710 | if (length != 0 | |
99b06c60 AM |
4711 | && file->info_ptr + length <= info_ptr_end |
4712 | && file->info_ptr + length > file->info_ptr) | |
dfc19da6 | 4713 | { |
99b06c60 AM |
4714 | struct comp_unit *each = parse_comp_unit (stash, file, |
4715 | file->info_ptr, length, | |
4716 | info_ptr_unit, offset_size); | |
dfc19da6 AM |
4717 | if (each) |
4718 | { | |
99b06c60 AM |
4719 | if (file->all_comp_units) |
4720 | file->all_comp_units->prev_unit = each; | |
dfc19da6 | 4721 | else |
99b06c60 | 4722 | file->last_comp_unit = each; |
dfc19da6 | 4723 | |
99b06c60 AM |
4724 | each->next_unit = file->all_comp_units; |
4725 | file->all_comp_units = each; | |
dfc19da6 | 4726 | |
99b06c60 | 4727 | file->info_ptr += length; |
dfc19da6 AM |
4728 | return each; |
4729 | } | |
4730 | } | |
4731 | ||
4732 | /* Don't trust any of the DWARF info after a corrupted length or | |
4733 | parse error. */ | |
99b06c60 | 4734 | file->info_ptr = info_ptr_end; |
dfc19da6 AM |
4735 | return NULL; |
4736 | } | |
4737 | ||
3eb185c9 TT |
4738 | /* Hash function for an asymbol. */ |
4739 | ||
4740 | static hashval_t | |
4741 | hash_asymbol (const void *sym) | |
4742 | { | |
4743 | const asymbol *asym = sym; | |
4744 | return htab_hash_string (asym->name); | |
4745 | } | |
4746 | ||
4747 | /* Equality function for asymbols. */ | |
4748 | ||
4749 | static int | |
4750 | eq_asymbol (const void *a, const void *b) | |
4751 | { | |
4752 | const asymbol *sa = a; | |
4753 | const asymbol *sb = b; | |
4754 | return strcmp (sa->name, sb->name) == 0; | |
4755 | } | |
4756 | ||
425bd9e1 NC |
4757 | /* Scan the debug information in PINFO looking for a DW_TAG_subprogram |
4758 | abbrev with a DW_AT_low_pc attached to it. Then lookup that same | |
4759 | symbol in SYMBOLS and return the difference between the low_pc and | |
4760 | the symbol's address. Returns 0 if no suitable symbol could be found. */ | |
4761 | ||
4762 | bfd_signed_vma | |
4763 | _bfd_dwarf2_find_symbol_bias (asymbol ** symbols, void ** pinfo) | |
4764 | { | |
4765 | struct dwarf2_debug *stash; | |
4766 | struct comp_unit * unit; | |
3eb185c9 TT |
4767 | htab_t sym_hash; |
4768 | bfd_signed_vma result = 0; | |
4769 | asymbol ** psym; | |
425bd9e1 NC |
4770 | |
4771 | stash = (struct dwarf2_debug *) *pinfo; | |
4772 | ||
219d6836 | 4773 | if (stash == NULL || symbols == NULL) |
425bd9e1 NC |
4774 | return 0; |
4775 | ||
3eb185c9 TT |
4776 | sym_hash = htab_create_alloc (10, hash_asymbol, eq_asymbol, |
4777 | NULL, xcalloc, free); | |
4778 | for (psym = symbols; * psym != NULL; psym++) | |
4779 | { | |
4780 | asymbol * sym = * psym; | |
4781 | ||
4782 | if (sym->flags & BSF_FUNCTION && sym->section != NULL) | |
4783 | { | |
4784 | void **slot = htab_find_slot (sym_hash, sym, INSERT); | |
4785 | *slot = sym; | |
4786 | } | |
4787 | } | |
4788 | ||
99b06c60 | 4789 | for (unit = stash->f.all_comp_units; unit; unit = unit->next_unit) |
425bd9e1 NC |
4790 | { |
4791 | struct funcinfo * func; | |
4792 | ||
99b06c60 | 4793 | comp_unit_maybe_decode_line_info (unit); |
425bd9e1 NC |
4794 | |
4795 | for (func = unit->function_table; func != NULL; func = func->prev_func) | |
4796 | if (func->name && func->arange.low) | |
4797 | { | |
3eb185c9 | 4798 | asymbol search, *sym; |
425bd9e1 NC |
4799 | |
4800 | /* FIXME: Do we need to scan the aranges looking for the lowest pc value ? */ | |
4801 | ||
3eb185c9 TT |
4802 | search.name = func->name; |
4803 | sym = htab_find (sym_hash, &search); | |
4804 | if (sym != NULL) | |
425bd9e1 | 4805 | { |
3eb185c9 TT |
4806 | result = ((bfd_signed_vma) func->arange.low) - |
4807 | ((bfd_signed_vma) (sym->value + sym->section->vma)); | |
4808 | goto done; | |
425bd9e1 NC |
4809 | } |
4810 | } | |
4811 | } | |
4812 | ||
3eb185c9 TT |
4813 | done: |
4814 | htab_delete (sym_hash); | |
4815 | return result; | |
425bd9e1 NC |
4816 | } |
4817 | ||
bec42b15 NC |
4818 | /* Find the source code location of SYMBOL. If SYMBOL is NULL |
4819 | then find the nearest source code location corresponding to | |
4820 | the address SECTION + OFFSET. | |
7f3bf384 | 4821 | Returns 1 if the line is found without error and fills in |
bec42b15 NC |
4822 | FILENAME_PTR and LINENUMBER_PTR. In the case where SYMBOL was |
4823 | NULL the FUNCTIONNAME_PTR is also filled in. | |
7f3bf384 AM |
4824 | Returns 2 if partial information from _bfd_elf_find_function is |
4825 | returned (function and maybe file) by looking at symbols. DWARF2 | |
4826 | info is present but not regarding the requested code location. | |
4827 | Returns 0 otherwise. | |
bec42b15 | 4828 | SYMBOLS contains the symbol table for ABFD. |
2247a609 | 4829 | DEBUG_SECTIONS contains the name of the dwarf debug sections. */ |
252b5132 | 4830 | |
7f3bf384 | 4831 | int |
fb167eb2 AM |
4832 | _bfd_dwarf2_find_nearest_line (bfd *abfd, |
4833 | asymbol **symbols, | |
4834 | asymbol *symbol, | |
4835 | asection *section, | |
4836 | bfd_vma offset, | |
4837 | const char **filename_ptr, | |
4838 | const char **functionname_ptr, | |
4839 | unsigned int *linenumber_ptr, | |
4840 | unsigned int *discriminator_ptr, | |
4841 | const struct dwarf_debug_section *debug_sections, | |
fb167eb2 | 4842 | void **pinfo) |
252b5132 RH |
4843 | { |
4844 | /* Read each compilation unit from the section .debug_info, and check | |
4845 | to see if it contains the address we are searching for. If yes, | |
4846 | lookup the address, and return the line number info. If no, go | |
98591c73 | 4847 | on to the next compilation unit. |
252b5132 RH |
4848 | |
4849 | We keep a list of all the previously read compilation units, and | |
98591c73 | 4850 | a pointer to the next un-read compilation unit. Check the |
a092b084 | 4851 | previously read units before reading more. */ |
1ba54ee0 | 4852 | struct dwarf2_debug *stash; |
a092b084 | 4853 | /* What address are we looking for? */ |
1ba54ee0 | 4854 | bfd_vma addr; |
252b5132 | 4855 | struct comp_unit* each; |
e00e8198 | 4856 | struct funcinfo *function = NULL; |
7f3bf384 | 4857 | int found = FALSE; |
bec42b15 | 4858 | bfd_boolean do_line; |
d4c32a81 | 4859 | |
2ca7691a TG |
4860 | *filename_ptr = NULL; |
4861 | if (functionname_ptr != NULL) | |
4862 | *functionname_ptr = NULL; | |
4863 | *linenumber_ptr = 0; | |
f725daa8 CC |
4864 | if (discriminator_ptr) |
4865 | *discriminator_ptr = 0; | |
d4c32a81 | 4866 | |
93ee1e36 AM |
4867 | if (! _bfd_dwarf2_slurp_debug_info (abfd, NULL, debug_sections, |
4868 | symbols, pinfo, | |
4869 | (abfd->flags & (EXEC_P | DYNAMIC)) == 0)) | |
2ca7691a | 4870 | return FALSE; |
d4c32a81 | 4871 | |
2ca7691a | 4872 | stash = (struct dwarf2_debug *) *pinfo; |
d4c32a81 | 4873 | |
fb167eb2 | 4874 | do_line = symbol != NULL; |
bec42b15 NC |
4875 | if (do_line) |
4876 | { | |
fb167eb2 | 4877 | BFD_ASSERT (section == NULL && offset == 0 && functionname_ptr == NULL); |
e6f7f6d1 | 4878 | section = bfd_asymbol_section (symbol); |
fb167eb2 | 4879 | addr = symbol->value; |
bec42b15 | 4880 | } |
bec42b15 | 4881 | else |
fb167eb2 AM |
4882 | { |
4883 | BFD_ASSERT (section != NULL && functionname_ptr != NULL); | |
4884 | addr = offset; | |
3239a423 AB |
4885 | |
4886 | /* If we have no SYMBOL but the section we're looking at is not a | |
07d6d2b8 AM |
4887 | code section, then take a look through the list of symbols to see |
4888 | if we have a symbol at the address we're looking for. If we do | |
4889 | then use this to look up line information. This will allow us to | |
4890 | give file and line results for data symbols. We exclude code | |
4891 | symbols here, if we look up a function symbol and then look up the | |
4892 | line information we'll actually return the line number for the | |
4893 | opening '{' rather than the function definition line. This is | |
4894 | because looking up by symbol uses the line table, in which the | |
4895 | first line for a function is usually the opening '{', while | |
4896 | looking up the function by section + offset uses the | |
4897 | DW_AT_decl_line from the function DW_TAG_subprogram for the line, | |
4898 | which will be the line of the function name. */ | |
97e83a10 | 4899 | if (symbols != NULL && (section->flags & SEC_CODE) == 0) |
3239a423 AB |
4900 | { |
4901 | asymbol **tmp; | |
4902 | ||
4903 | for (tmp = symbols; (*tmp) != NULL; ++tmp) | |
4904 | if ((*tmp)->the_bfd == abfd | |
4905 | && (*tmp)->section == section | |
4906 | && (*tmp)->value == offset | |
4907 | && ((*tmp)->flags & BSF_SECTION_SYM) == 0) | |
4908 | { | |
4909 | symbol = *tmp; | |
4910 | do_line = TRUE; | |
07d6d2b8 AM |
4911 | /* For local symbols, keep going in the hope we find a |
4912 | global. */ | |
4913 | if ((symbol->flags & BSF_GLOBAL) != 0) | |
4914 | break; | |
3239a423 AB |
4915 | } |
4916 | } | |
fb167eb2 | 4917 | } |
bec42b15 | 4918 | |
1ba54ee0 | 4919 | if (section->output_section) |
6dd55cb7 | 4920 | addr += section->output_section->vma + section->output_offset; |
1ba54ee0 | 4921 | else |
6dd55cb7 | 4922 | addr += section->vma; |
a092b084 | 4923 | |
98591c73 | 4924 | /* A null info_ptr indicates that there is no dwarf2 info |
a092b084 | 4925 | (or that an error occured while setting up the stash). */ |
99b06c60 | 4926 | if (! stash->f.info_ptr) |
2ca7691a | 4927 | return FALSE; |
252b5132 | 4928 | |
4ab527b0 FF |
4929 | stash->inliner_chain = NULL; |
4930 | ||
a092b084 | 4931 | /* Check the previously read comp. units first. */ |
bd210d54 NC |
4932 | if (do_line) |
4933 | { | |
4934 | /* The info hash tables use quite a bit of memory. We may not want to | |
4935 | always use them. We use some heuristics to decide if and when to | |
4936 | turn it on. */ | |
4937 | if (stash->info_hash_status == STASH_INFO_HASH_OFF) | |
4938 | stash_maybe_enable_info_hash_tables (abfd, stash); | |
4939 | ||
4940 | /* Keep info hash table up to date if they are available. Note that we | |
089e3718 | 4941 | may disable the hash tables if there is any error duing update. */ |
bd210d54 NC |
4942 | if (stash->info_hash_status == STASH_INFO_HASH_ON) |
4943 | stash_maybe_update_info_hash_tables (stash); | |
4944 | ||
4945 | if (stash->info_hash_status == STASH_INFO_HASH_ON) | |
4946 | { | |
4947 | found = stash_find_line_fast (stash, symbol, addr, filename_ptr, | |
4948 | linenumber_ptr); | |
4949 | if (found) | |
4950 | goto done; | |
4951 | } | |
0d161102 | 4952 | else |
bd210d54 NC |
4953 | { |
4954 | /* Check the previously read comp. units first. */ | |
99b06c60 | 4955 | for (each = stash->f.all_comp_units; each; each = each->next_unit) |
bd210d54 | 4956 | if ((symbol->flags & BSF_FUNCTION) == 0 |
a2a50954 | 4957 | || each->arange.high == 0 |
bd210d54 NC |
4958 | || comp_unit_contains_address (each, addr)) |
4959 | { | |
4960 | found = comp_unit_find_line (each, symbol, addr, filename_ptr, | |
99b06c60 | 4961 | linenumber_ptr); |
bd210d54 NC |
4962 | if (found) |
4963 | goto done; | |
4964 | } | |
4965 | } | |
4966 | } | |
4967 | else | |
4968 | { | |
240d6706 NC |
4969 | bfd_vma min_range = (bfd_vma) -1; |
4970 | const char * local_filename = NULL; | |
e00e8198 | 4971 | struct funcinfo *local_function = NULL; |
240d6706 NC |
4972 | unsigned int local_linenumber = 0; |
4973 | unsigned int local_discriminator = 0; | |
96691246 | 4974 | |
99b06c60 | 4975 | for (each = stash->f.all_comp_units; each; each = each->next_unit) |
709d67f1 | 4976 | { |
240d6706 NC |
4977 | bfd_vma range = (bfd_vma) -1; |
4978 | ||
a2a50954 AM |
4979 | found = ((each->arange.high == 0 |
4980 | || comp_unit_contains_address (each, addr)) | |
99b06c60 AM |
4981 | && (range = (comp_unit_find_nearest_line |
4982 | (each, addr, &local_filename, | |
4983 | &local_function, &local_linenumber, | |
4984 | &local_discriminator))) != 0); | |
709d67f1 | 4985 | if (found) |
240d6706 NC |
4986 | { |
4987 | /* PRs 15935 15994: Bogus debug information may have provided us | |
4988 | with an erroneous match. We attempt to counter this by | |
4989 | selecting the match that has the smallest address range | |
4990 | associated with it. (We are assuming that corrupt debug info | |
4991 | will tend to result in extra large address ranges rather than | |
4992 | extra small ranges). | |
4993 | ||
4994 | This does mean that we scan through all of the CUs associated | |
4995 | with the bfd each time this function is called. But this does | |
4996 | have the benefit of producing consistent results every time the | |
4997 | function is called. */ | |
4998 | if (range <= min_range) | |
4999 | { | |
5000 | if (filename_ptr && local_filename) | |
5001 | * filename_ptr = local_filename; | |
e00e8198 AM |
5002 | if (local_function) |
5003 | function = local_function; | |
240d6706 NC |
5004 | if (discriminator_ptr && local_discriminator) |
5005 | * discriminator_ptr = local_discriminator; | |
5006 | if (local_linenumber) | |
5007 | * linenumber_ptr = local_linenumber; | |
5008 | min_range = range; | |
5009 | } | |
5010 | } | |
5011 | } | |
5012 | ||
5013 | if (* linenumber_ptr) | |
5014 | { | |
5015 | found = TRUE; | |
5016 | goto done; | |
709d67f1 | 5017 | } |
5420f73d L |
5018 | } |
5019 | ||
5420f73d | 5020 | /* Read each remaining comp. units checking each as they are read. */ |
99b06c60 | 5021 | while ((each = stash_comp_unit (stash, &stash->f)) != NULL) |
5420f73d | 5022 | { |
dfc19da6 AM |
5023 | /* DW_AT_low_pc and DW_AT_high_pc are optional for |
5024 | compilation units. If we don't have them (i.e., | |
5025 | unit->high == 0), we need to consult the line info table | |
5026 | to see if a compilation unit contains the given | |
5027 | address. */ | |
5028 | if (do_line) | |
5029 | found = (((symbol->flags & BSF_FUNCTION) == 0 | |
5030 | || each->arange.high == 0 | |
5031 | || comp_unit_contains_address (each, addr)) | |
5032 | && comp_unit_find_line (each, symbol, addr, | |
99b06c60 | 5033 | filename_ptr, linenumber_ptr)); |
9defd221 | 5034 | else |
dfc19da6 AM |
5035 | found = ((each->arange.high == 0 |
5036 | || comp_unit_contains_address (each, addr)) | |
5037 | && comp_unit_find_nearest_line (each, addr, | |
5038 | filename_ptr, | |
5039 | &function, | |
5040 | linenumber_ptr, | |
99b06c60 | 5041 | discriminator_ptr) != 0); |
dfc19da6 AM |
5042 | |
5043 | if (found) | |
5044 | break; | |
5420f73d L |
5045 | } |
5046 | ||
a2a50954 | 5047 | done: |
e7679060 AM |
5048 | if (functionname_ptr && function && function->is_linkage) |
5049 | *functionname_ptr = function->name; | |
5050 | else if (functionname_ptr | |
7f3bf384 | 5051 | && (!*functionname_ptr |
e7679060 | 5052 | || (function && !function->is_linkage))) |
e00e8198 | 5053 | { |
e7679060 AM |
5054 | asymbol *fun; |
5055 | asymbol **syms = symbols; | |
5056 | asection *sec = section; | |
5057 | ||
7f3bf384 | 5058 | _bfd_dwarf2_stash_syms (stash, abfd, &sec, &syms); |
e7679060 AM |
5059 | fun = _bfd_elf_find_function (abfd, syms, sec, offset, |
5060 | *filename_ptr ? NULL : filename_ptr, | |
5061 | functionname_ptr); | |
5062 | ||
7f3bf384 AM |
5063 | if (!found && fun != NULL) |
5064 | found = 2; | |
5065 | ||
e7679060 | 5066 | if (function && !function->is_linkage) |
e00e8198 | 5067 | { |
923b198a AM |
5068 | bfd_vma sec_vma; |
5069 | ||
923b198a AM |
5070 | sec_vma = section->vma; |
5071 | if (section->output_section != NULL) | |
5072 | sec_vma = section->output_section->vma + section->output_offset; | |
5073 | if (fun != NULL | |
5074 | && fun->value + sec_vma == function->arange.low) | |
5075 | function->name = *functionname_ptr; | |
5076 | /* Even if we didn't find a linkage name, say that we have | |
5077 | to stop a repeated search of symbols. */ | |
e00e8198 AM |
5078 | function->is_linkage = TRUE; |
5079 | } | |
e00e8198 | 5080 | } |
e7679060 | 5081 | |
d4c32a81 L |
5082 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
5083 | unset_sections (stash); | |
5084 | ||
5085 | return found; | |
5420f73d L |
5086 | } |
5087 | ||
4ab527b0 FF |
5088 | bfd_boolean |
5089 | _bfd_dwarf2_find_inliner_info (bfd *abfd ATTRIBUTE_UNUSED, | |
5090 | const char **filename_ptr, | |
5091 | const char **functionname_ptr, | |
5092 | unsigned int *linenumber_ptr, | |
5093 | void **pinfo) | |
5094 | { | |
5095 | struct dwarf2_debug *stash; | |
5096 | ||
a50b1753 | 5097 | stash = (struct dwarf2_debug *) *pinfo; |
4ab527b0 FF |
5098 | if (stash) |
5099 | { | |
5100 | struct funcinfo *func = stash->inliner_chain; | |
bec42b15 | 5101 | |
4ab527b0 FF |
5102 | if (func && func->caller_func) |
5103 | { | |
5104 | *filename_ptr = func->caller_file; | |
5105 | *functionname_ptr = func->caller_func->name; | |
5106 | *linenumber_ptr = func->caller_line; | |
5107 | stash->inliner_chain = func->caller_func; | |
bec42b15 | 5108 | return TRUE; |
4ab527b0 FF |
5109 | } |
5110 | } | |
5111 | ||
bec42b15 | 5112 | return FALSE; |
4ab527b0 FF |
5113 | } |
5114 | ||
35330cce | 5115 | void |
d9071b0c | 5116 | _bfd_dwarf2_cleanup_debug_info (bfd *abfd, void **pinfo) |
35330cce | 5117 | { |
5bb3703f | 5118 | struct dwarf2_debug *stash = (struct dwarf2_debug *) *pinfo; |
35330cce | 5119 | struct comp_unit *each; |
99b06c60 | 5120 | struct dwarf2_debug_file *file; |
35330cce | 5121 | |
d9071b0c | 5122 | if (abfd == NULL || stash == NULL) |
35330cce NC |
5123 | return; |
5124 | ||
99b06c60 AM |
5125 | if (stash->varinfo_hash_table) |
5126 | bfd_hash_table_free (&stash->varinfo_hash_table->base); | |
5127 | if (stash->funcinfo_hash_table) | |
5128 | bfd_hash_table_free (&stash->funcinfo_hash_table->base); | |
35330cce | 5129 | |
99b06c60 AM |
5130 | file = &stash->f; |
5131 | while (1) | |
5132 | { | |
5133 | for (each = file->all_comp_units; each; each = each->next_unit) | |
d8d1c398 | 5134 | { |
99b06c60 AM |
5135 | struct funcinfo *function_table = each->function_table; |
5136 | struct varinfo *variable_table = each->variable_table; | |
90b5b1a5 | 5137 | |
e63ef095 | 5138 | if (each->line_table && each->line_table != file->line_table) |
90b5b1a5 | 5139 | { |
99b06c60 AM |
5140 | free (each->line_table->files); |
5141 | free (each->line_table->dirs); | |
90b5b1a5 NC |
5142 | } |
5143 | ||
c9594989 AM |
5144 | free (each->lookup_funcinfo_table); |
5145 | each->lookup_funcinfo_table = NULL; | |
089e3718 | 5146 | |
99b06c60 | 5147 | while (function_table) |
90b5b1a5 | 5148 | { |
c9594989 AM |
5149 | free (function_table->file); |
5150 | function_table->file = NULL; | |
5151 | free (function_table->caller_file); | |
5152 | function_table->caller_file = NULL; | |
99b06c60 | 5153 | function_table = function_table->prev_func; |
90b5b1a5 NC |
5154 | } |
5155 | ||
99b06c60 AM |
5156 | while (variable_table) |
5157 | { | |
c9594989 AM |
5158 | free (variable_table->file); |
5159 | variable_table->file = NULL; | |
99b06c60 AM |
5160 | variable_table = variable_table->prev_var; |
5161 | } | |
90b5b1a5 | 5162 | } |
35330cce | 5163 | |
e63ef095 AM |
5164 | if (file->line_table) |
5165 | { | |
5166 | free (file->line_table->files); | |
5167 | free (file->line_table->dirs); | |
5168 | } | |
5169 | htab_delete (file->abbrev_offsets); | |
5170 | ||
99b06c60 AM |
5171 | free (file->dwarf_line_str_buffer); |
5172 | free (file->dwarf_str_buffer); | |
5173 | free (file->dwarf_ranges_buffer); | |
5174 | free (file->dwarf_line_buffer); | |
5175 | free (file->dwarf_abbrev_buffer); | |
5176 | free (file->dwarf_info_buffer); | |
5177 | if (file == &stash->alt) | |
5178 | break; | |
5179 | file = &stash->alt; | |
5180 | } | |
5181 | free (stash->sec_vma); | |
5182 | free (stash->adjusted_sections); | |
1c37913d | 5183 | if (stash->close_on_cleanup) |
99b06c60 AM |
5184 | bfd_close (stash->f.bfd_ptr); |
5185 | if (stash->alt.bfd_ptr) | |
5186 | bfd_close (stash->alt.bfd_ptr); | |
35330cce | 5187 | } |
e00e8198 AM |
5188 | |
5189 | /* Find the function to a particular section and offset, | |
5190 | for error reporting. */ | |
5191 | ||
923b198a | 5192 | asymbol * |
e00e8198 AM |
5193 | _bfd_elf_find_function (bfd *abfd, |
5194 | asymbol **symbols, | |
5195 | asection *section, | |
5196 | bfd_vma offset, | |
5197 | const char **filename_ptr, | |
5198 | const char **functionname_ptr) | |
5199 | { | |
5200 | struct elf_find_function_cache | |
5201 | { | |
5202 | asection *last_section; | |
5203 | asymbol *func; | |
5204 | const char *filename; | |
5205 | bfd_size_type func_size; | |
5206 | } *cache; | |
5207 | ||
5208 | if (symbols == NULL) | |
923b198a | 5209 | return NULL; |
e00e8198 AM |
5210 | |
5211 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) | |
923b198a | 5212 | return NULL; |
e00e8198 AM |
5213 | |
5214 | cache = elf_tdata (abfd)->elf_find_function_cache; | |
5215 | if (cache == NULL) | |
5216 | { | |
5217 | cache = bfd_zalloc (abfd, sizeof (*cache)); | |
5218 | elf_tdata (abfd)->elf_find_function_cache = cache; | |
5219 | if (cache == NULL) | |
923b198a | 5220 | return NULL; |
e00e8198 AM |
5221 | } |
5222 | if (cache->last_section != section | |
5223 | || cache->func == NULL | |
5224 | || offset < cache->func->value | |
5225 | || offset >= cache->func->value + cache->func_size) | |
5226 | { | |
5227 | asymbol *file; | |
5228 | bfd_vma low_func; | |
5229 | asymbol **p; | |
5230 | /* ??? Given multiple file symbols, it is impossible to reliably | |
5231 | choose the right file name for global symbols. File symbols are | |
5232 | local symbols, and thus all file symbols must sort before any | |
5233 | global symbols. The ELF spec may be interpreted to say that a | |
5234 | file symbol must sort before other local symbols, but currently | |
5235 | ld -r doesn't do this. So, for ld -r output, it is possible to | |
5236 | make a better choice of file name for local symbols by ignoring | |
5237 | file symbols appearing after a given local symbol. */ | |
5238 | enum { nothing_seen, symbol_seen, file_after_symbol_seen } state; | |
5239 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
5240 | ||
5241 | file = NULL; | |
5242 | low_func = 0; | |
5243 | state = nothing_seen; | |
5244 | cache->filename = NULL; | |
5245 | cache->func = NULL; | |
5246 | cache->func_size = 0; | |
5247 | cache->last_section = section; | |
5248 | ||
5249 | for (p = symbols; *p != NULL; p++) | |
5250 | { | |
5251 | asymbol *sym = *p; | |
5252 | bfd_vma code_off; | |
5253 | bfd_size_type size; | |
5254 | ||
5255 | if ((sym->flags & BSF_FILE) != 0) | |
5256 | { | |
5257 | file = sym; | |
5258 | if (state == symbol_seen) | |
5259 | state = file_after_symbol_seen; | |
5260 | continue; | |
5261 | } | |
5262 | ||
5263 | size = bed->maybe_function_sym (sym, section, &code_off); | |
5264 | if (size != 0 | |
5265 | && code_off <= offset | |
5266 | && (code_off > low_func | |
5267 | || (code_off == low_func | |
5268 | && size > cache->func_size))) | |
5269 | { | |
5270 | cache->func = sym; | |
5271 | cache->func_size = size; | |
5272 | cache->filename = NULL; | |
5273 | low_func = code_off; | |
5274 | if (file != NULL | |
5275 | && ((sym->flags & BSF_LOCAL) != 0 | |
5276 | || state != file_after_symbol_seen)) | |
5277 | cache->filename = bfd_asymbol_name (file); | |
5278 | } | |
5279 | if (state == nothing_seen) | |
5280 | state = symbol_seen; | |
5281 | } | |
5282 | } | |
5283 | ||
5284 | if (cache->func == NULL) | |
923b198a | 5285 | return NULL; |
e00e8198 AM |
5286 | |
5287 | if (filename_ptr) | |
5288 | *filename_ptr = cache->filename; | |
5289 | if (functionname_ptr) | |
5290 | *functionname_ptr = bfd_asymbol_name (cache->func); | |
5291 | ||
923b198a | 5292 | return cache->func; |
e00e8198 | 5293 | } |