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c906108c | 1 | /* Symbol table definitions for GDB. |
1bac305b | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #if !defined (SYMTAB_H) | |
21 | #define SYMTAB_H 1 | |
22 | ||
f8eba3c6 | 23 | #include "vec.h" |
49c4e619 | 24 | #include "gdb_vecs.h" |
2f68a895 | 25 | #include "gdbtypes.h" |
f8eba3c6 | 26 | |
5f8a3188 | 27 | /* Opaque declarations. */ |
da3331ec AC |
28 | struct ui_file; |
29 | struct frame_info; | |
30 | struct symbol; | |
5f8a3188 | 31 | struct obstack; |
6a2f5abf | 32 | struct objfile; |
fe898f56 DC |
33 | struct block; |
34 | struct blockvector; | |
4c2df51b DJ |
35 | struct axs_value; |
36 | struct agent_expr; | |
6c95b8df | 37 | struct program_space; |
66a17cb6 | 38 | struct language_defn; |
55aa24fb | 39 | struct probe; |
4357ac6c | 40 | struct common_block; |
c906108c | 41 | |
a7f19c79 MC |
42 | /* Some of the structures in this file are space critical. |
43 | The space-critical structures are: | |
44 | ||
45 | struct general_symbol_info | |
46 | struct symbol | |
47 | struct partial_symbol | |
48 | ||
5bccb4d1 | 49 | These structures are laid out to encourage good packing. |
a7f19c79 MC |
50 | They use ENUM_BITFIELD and short int fields, and they order the |
51 | structure members so that fields less than a word are next | |
c378eb4e | 52 | to each other so they can be packed together. */ |
a7f19c79 MC |
53 | |
54 | /* Rearranged: used ENUM_BITFIELD and rearranged field order in | |
55 | all the space critical structures (plus struct minimal_symbol). | |
56 | Memory usage dropped from 99360768 bytes to 90001408 bytes. | |
57 | I measured this with before-and-after tests of | |
58 | "HEAD-old-gdb -readnow HEAD-old-gdb" and | |
59 | "HEAD-new-gdb -readnow HEAD-old-gdb" on native i686-pc-linux-gnu, | |
60 | red hat linux 8, with LD_LIBRARY_PATH=/usr/lib/debug, | |
61 | typing "maint space 1" at the first command prompt. | |
62 | ||
63 | Here is another measurement (from andrew c): | |
64 | # no /usr/lib/debug, just plain glibc, like a normal user | |
65 | gdb HEAD-old-gdb | |
66 | (gdb) break internal_error | |
67 | (gdb) run | |
68 | (gdb) maint internal-error | |
69 | (gdb) backtrace | |
70 | (gdb) maint space 1 | |
71 | ||
72 | gdb gdb_6_0_branch 2003-08-19 space used: 8896512 | |
73 | gdb HEAD 2003-08-19 space used: 8904704 | |
74 | gdb HEAD 2003-08-21 space used: 8396800 (+symtab.h) | |
75 | gdb HEAD 2003-08-21 space used: 8265728 (+gdbtypes.h) | |
76 | ||
77 | The third line shows the savings from the optimizations in symtab.h. | |
78 | The fourth line shows the savings from the optimizations in | |
79 | gdbtypes.h. Both optimizations are in gdb HEAD now. | |
80 | ||
81 | --chastain 2003-08-21 */ | |
82 | ||
29df156d | 83 | /* Struct for storing C++ specific information. Allocated when needed. */ |
a7f19c79 | 84 | |
29df156d SW |
85 | struct cplus_specific |
86 | { | |
0d5cff50 | 87 | const char *demangled_name; |
29df156d | 88 | }; |
a7f19c79 | 89 | |
c906108c SS |
90 | /* Define a structure for the information that is common to all symbol types, |
91 | including minimal symbols, partial symbols, and full symbols. In a | |
92 | multilanguage environment, some language specific information may need to | |
c378eb4e | 93 | be recorded along with each symbol. */ |
c906108c | 94 | |
c378eb4e | 95 | /* This structure is space critical. See space comments at the top. */ |
c906108c SS |
96 | |
97 | struct general_symbol_info | |
17c5ed2c | 98 | { |
22abf04a | 99 | /* Name of the symbol. This is a required field. Storage for the |
4a146b47 EZ |
100 | name is allocated on the objfile_obstack for the associated |
101 | objfile. For languages like C++ that make a distinction between | |
102 | the mangled name and demangled name, this is the mangled | |
103 | name. */ | |
c906108c | 104 | |
0d5cff50 | 105 | const char *name; |
c906108c | 106 | |
17c5ed2c DC |
107 | /* Value of the symbol. Which member of this union to use, and what |
108 | it means, depends on what kind of symbol this is and its | |
109 | SYMBOL_CLASS. See comments there for more details. All of these | |
110 | are in host byte order (though what they point to might be in | |
111 | target byte order, e.g. LOC_CONST_BYTES). */ | |
c906108c | 112 | |
17c5ed2c DC |
113 | union |
114 | { | |
12df843f | 115 | LONGEST ivalue; |
c906108c | 116 | |
3977b71f | 117 | const struct block *block; |
c906108c | 118 | |
d47a1bc1 | 119 | const gdb_byte *bytes; |
c906108c | 120 | |
17c5ed2c | 121 | CORE_ADDR address; |
c906108c | 122 | |
5a352474 | 123 | /* A common block. Used with LOC_COMMON_BLOCK. */ |
4357ac6c | 124 | |
17a40b44 | 125 | const struct common_block *common_block; |
4357ac6c | 126 | |
c378eb4e | 127 | /* For opaque typedef struct chain. */ |
c906108c | 128 | |
17c5ed2c DC |
129 | struct symbol *chain; |
130 | } | |
131 | value; | |
c906108c | 132 | |
17c5ed2c | 133 | /* Since one and only one language can apply, wrap the language specific |
29df156d | 134 | information inside a union. */ |
c906108c | 135 | |
17c5ed2c DC |
136 | union |
137 | { | |
f85f34ed TT |
138 | /* A pointer to an obstack that can be used for storage associated |
139 | with this symbol. This is only used by Ada, and only when the | |
140 | 'ada_mangled' field is zero. */ | |
141 | struct obstack *obstack; | |
142 | ||
afa16725 | 143 | /* This is used by languages which wish to store a demangled name. |
c378eb4e | 144 | currently used by Ada, Java, and Objective C. */ |
afa16725 | 145 | struct mangled_lang |
17c5ed2c | 146 | { |
0d5cff50 | 147 | const char *demangled_name; |
17c5ed2c | 148 | } |
afa16725 | 149 | mangled_lang; |
29df156d SW |
150 | |
151 | struct cplus_specific *cplus_specific; | |
17c5ed2c DC |
152 | } |
153 | language_specific; | |
c5aa993b | 154 | |
17c5ed2c DC |
155 | /* Record the source code language that applies to this symbol. |
156 | This is used to select one of the fields from the language specific | |
c378eb4e | 157 | union above. */ |
c5aa993b | 158 | |
87193939 | 159 | ENUM_BITFIELD(language) language : 8; |
c5aa993b | 160 | |
f85f34ed TT |
161 | /* This is only used by Ada. If set, then the 'mangled_lang' field |
162 | of language_specific is valid. Otherwise, the 'obstack' field is | |
163 | valid. */ | |
164 | unsigned int ada_mangled : 1; | |
165 | ||
17c5ed2c DC |
166 | /* Which section is this symbol in? This is an index into |
167 | section_offsets for this objfile. Negative means that the symbol | |
e27d198c | 168 | does not get relocated relative to a section. */ |
c5aa993b | 169 | |
17c5ed2c | 170 | short section; |
17c5ed2c | 171 | }; |
c906108c | 172 | |
cfc594ee TT |
173 | extern void symbol_set_demangled_name (struct general_symbol_info *, |
174 | const char *, | |
ccde22c0 | 175 | struct obstack *); |
b250c185 | 176 | |
0d5cff50 DE |
177 | extern const char *symbol_get_demangled_name |
178 | (const struct general_symbol_info *); | |
b250c185 | 179 | |
714835d5 | 180 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 181 | |
88cda038 | 182 | /* Note that all the following SYMBOL_* macros are used with the |
efd66ac6 TT |
183 | SYMBOL argument being either a partial symbol or |
184 | a full symbol. Both types have a ginfo field. In particular | |
33e5013e | 185 | the SYMBOL_SET_LANGUAGE, SYMBOL_DEMANGLED_NAME, etc. |
d6350901 | 186 | macros cannot be entirely substituted by |
88cda038 EZ |
187 | functions, unless the callers are changed to pass in the ginfo |
188 | field only, instead of the SYMBOL parameter. */ | |
189 | ||
c906108c SS |
190 | #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue |
191 | #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address | |
192 | #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes | |
4357ac6c | 193 | #define SYMBOL_VALUE_COMMON_BLOCK(symbol) (symbol)->ginfo.value.common_block |
c906108c SS |
194 | #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block |
195 | #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain | |
196 | #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language | |
197 | #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section | |
e27d198c TT |
198 | #define SYMBOL_OBJ_SECTION(objfile, symbol) \ |
199 | (((symbol)->ginfo.section >= 0) \ | |
200 | ? (&(((objfile)->sections)[(symbol)->ginfo.section])) \ | |
201 | : NULL) | |
c906108c | 202 | |
89aad1f9 | 203 | /* Initializes the language dependent portion of a symbol |
c378eb4e | 204 | depending upon the language for the symbol. */ |
f85f34ed TT |
205 | #define SYMBOL_SET_LANGUAGE(symbol,language,obstack) \ |
206 | (symbol_set_language (&(symbol)->ginfo, (language), (obstack))) | |
33e5013e | 207 | extern void symbol_set_language (struct general_symbol_info *symbol, |
f85f34ed TT |
208 | enum language language, |
209 | struct obstack *obstack); | |
c906108c | 210 | |
3567439c DJ |
211 | /* Set just the linkage name of a symbol; do not try to demangle |
212 | it. Used for constructs which do not have a mangled name, | |
213 | e.g. struct tags. Unlike SYMBOL_SET_NAMES, linkage_name must | |
1c9e8358 TT |
214 | be terminated and either already on the objfile's obstack or |
215 | permanently allocated. */ | |
3567439c DJ |
216 | #define SYMBOL_SET_LINKAGE_NAME(symbol,linkage_name) \ |
217 | (symbol)->ginfo.name = (linkage_name) | |
218 | ||
219 | /* Set the linkage and natural names of a symbol, by demangling | |
220 | the linkage name. */ | |
04a679b8 TT |
221 | #define SYMBOL_SET_NAMES(symbol,linkage_name,len,copy_name,objfile) \ |
222 | symbol_set_names (&(symbol)->ginfo, linkage_name, len, copy_name, objfile) | |
2de7ced7 | 223 | extern void symbol_set_names (struct general_symbol_info *symbol, |
04a679b8 | 224 | const char *linkage_name, int len, int copy_name, |
2de7ced7 DJ |
225 | struct objfile *objfile); |
226 | ||
22abf04a DC |
227 | /* Now come lots of name accessor macros. Short version as to when to |
228 | use which: Use SYMBOL_NATURAL_NAME to refer to the name of the | |
229 | symbol in the original source code. Use SYMBOL_LINKAGE_NAME if you | |
230 | want to know what the linker thinks the symbol's name is. Use | |
231 | SYMBOL_PRINT_NAME for output. Use SYMBOL_DEMANGLED_NAME if you | |
232 | specifically need to know whether SYMBOL_NATURAL_NAME and | |
3567439c | 233 | SYMBOL_LINKAGE_NAME are different. */ |
22abf04a DC |
234 | |
235 | /* Return SYMBOL's "natural" name, i.e. the name that it was called in | |
236 | the original source code. In languages like C++ where symbols may | |
237 | be mangled for ease of manipulation by the linker, this is the | |
238 | demangled name. */ | |
239 | ||
240 | #define SYMBOL_NATURAL_NAME(symbol) \ | |
241 | (symbol_natural_name (&(symbol)->ginfo)) | |
0d5cff50 DE |
242 | extern const char *symbol_natural_name |
243 | (const struct general_symbol_info *symbol); | |
22abf04a DC |
244 | |
245 | /* Return SYMBOL's name from the point of view of the linker. In | |
246 | languages like C++ where symbols may be mangled for ease of | |
247 | manipulation by the linker, this is the mangled name; otherwise, | |
3567439c | 248 | it's the same as SYMBOL_NATURAL_NAME. */ |
22abf04a DC |
249 | |
250 | #define SYMBOL_LINKAGE_NAME(symbol) (symbol)->ginfo.name | |
251 | ||
9cc0d196 | 252 | /* Return the demangled name for a symbol based on the language for |
c378eb4e | 253 | that symbol. If no demangled name exists, return NULL. */ |
9cc0d196 EZ |
254 | #define SYMBOL_DEMANGLED_NAME(symbol) \ |
255 | (symbol_demangled_name (&(symbol)->ginfo)) | |
0d5cff50 DE |
256 | extern const char *symbol_demangled_name |
257 | (const struct general_symbol_info *symbol); | |
c906108c | 258 | |
de5ad195 DC |
259 | /* Macro that returns a version of the name of a symbol that is |
260 | suitable for output. In C++ this is the "demangled" form of the | |
261 | name if demangle is on and the "mangled" form of the name if | |
262 | demangle is off. In other languages this is just the symbol name. | |
263 | The result should never be NULL. Don't use this for internal | |
50f182aa DE |
264 | purposes (e.g. storing in a hashtable): it's only suitable for output. |
265 | ||
266 | N.B. symbol may be anything with a ginfo member, | |
267 | e.g., struct symbol or struct minimal_symbol. */ | |
de5ad195 DC |
268 | |
269 | #define SYMBOL_PRINT_NAME(symbol) \ | |
22abf04a | 270 | (demangle ? SYMBOL_NATURAL_NAME (symbol) : SYMBOL_LINKAGE_NAME (symbol)) |
50f182aa | 271 | extern int demangle; |
c906108c | 272 | |
c378eb4e | 273 | /* Macro that returns the name to be used when sorting and searching symbols. |
91101fe5 | 274 | In C++ and Java, we search for the demangled form of a name, |
4725b721 PH |
275 | and so sort symbols accordingly. In Ada, however, we search by mangled |
276 | name. If there is no distinct demangled name, then SYMBOL_SEARCH_NAME | |
c378eb4e | 277 | returns the same value (same pointer) as SYMBOL_LINKAGE_NAME. */ |
4725b721 PH |
278 | #define SYMBOL_SEARCH_NAME(symbol) \ |
279 | (symbol_search_name (&(symbol)->ginfo)) | |
0d5cff50 | 280 | extern const char *symbol_search_name (const struct general_symbol_info *); |
4725b721 | 281 | |
e9111bf7 DE |
282 | /* Return non-zero if NAME matches the "search" name of SYMBOL. |
283 | Whitespace and trailing parentheses are ignored. | |
284 | See strcmp_iw for details about its behavior. */ | |
4725b721 PH |
285 | #define SYMBOL_MATCHES_SEARCH_NAME(symbol, name) \ |
286 | (strcmp_iw (SYMBOL_SEARCH_NAME (symbol), (name)) == 0) | |
287 | ||
87193939 MC |
288 | /* Classification types for a minimal symbol. These should be taken as |
289 | "advisory only", since if gdb can't easily figure out a | |
290 | classification it simply selects mst_unknown. It may also have to | |
291 | guess when it can't figure out which is a better match between two | |
292 | types (mst_data versus mst_bss) for example. Since the minimal | |
293 | symbol info is sometimes derived from the BFD library's view of a | |
c378eb4e | 294 | file, we need to live with what information bfd supplies. */ |
87193939 MC |
295 | |
296 | enum minimal_symbol_type | |
297 | { | |
298 | mst_unknown = 0, /* Unknown type, the default */ | |
299 | mst_text, /* Generally executable instructions */ | |
0875794a JK |
300 | mst_text_gnu_ifunc, /* Executable code returning address |
301 | of executable code */ | |
302 | mst_slot_got_plt, /* GOT entries for .plt sections */ | |
87193939 MC |
303 | mst_data, /* Generally initialized data */ |
304 | mst_bss, /* Generally uninitialized data */ | |
305 | mst_abs, /* Generally absolute (nonrelocatable) */ | |
306 | /* GDB uses mst_solib_trampoline for the start address of a shared | |
307 | library trampoline entry. Breakpoints for shared library functions | |
308 | are put there if the shared library is not yet loaded. | |
309 | After the shared library is loaded, lookup_minimal_symbol will | |
310 | prefer the minimal symbol from the shared library (usually | |
311 | a mst_text symbol) over the mst_solib_trampoline symbol, and the | |
312 | breakpoints will be moved to their true address in the shared | |
313 | library via breakpoint_re_set. */ | |
314 | mst_solib_trampoline, /* Shared library trampoline code */ | |
315 | /* For the mst_file* types, the names are only guaranteed to be unique | |
316 | within a given .o file. */ | |
317 | mst_file_text, /* Static version of mst_text */ | |
318 | mst_file_data, /* Static version of mst_data */ | |
319 | mst_file_bss /* Static version of mst_bss */ | |
320 | }; | |
321 | ||
c906108c SS |
322 | /* Define a simple structure used to hold some very basic information about |
323 | all defined global symbols (text, data, bss, abs, etc). The only required | |
324 | information is the general_symbol_info. | |
325 | ||
326 | In many cases, even if a file was compiled with no special options for | |
327 | debugging at all, as long as was not stripped it will contain sufficient | |
328 | information to build a useful minimal symbol table using this structure. | |
329 | Even when a file contains enough debugging information to build a full | |
330 | symbol table, these minimal symbols are still useful for quickly mapping | |
331 | between names and addresses, and vice versa. They are also sometimes | |
c378eb4e | 332 | used to figure out what full symbol table entries need to be read in. */ |
c906108c SS |
333 | |
334 | struct minimal_symbol | |
17c5ed2c | 335 | { |
c906108c | 336 | |
17c5ed2c | 337 | /* The general symbol info required for all types of symbols. |
c906108c | 338 | |
17c5ed2c DC |
339 | The SYMBOL_VALUE_ADDRESS contains the address that this symbol |
340 | corresponds to. */ | |
c906108c | 341 | |
efd66ac6 | 342 | struct general_symbol_info mginfo; |
c906108c | 343 | |
f594e5e9 MC |
344 | /* Size of this symbol. end_psymtab in dbxread.c uses this |
345 | information to calculate the end of the partial symtab based on the | |
346 | address of the last symbol plus the size of the last symbol. */ | |
347 | ||
348 | unsigned long size; | |
349 | ||
17c5ed2c | 350 | /* Which source file is this symbol in? Only relevant for mst_file_*. */ |
04aba065 | 351 | const char *filename; |
c906108c | 352 | |
87193939 | 353 | /* Classification type for this minimal symbol. */ |
17c5ed2c | 354 | |
87193939 | 355 | ENUM_BITFIELD(minimal_symbol_type) type : 8; |
17c5ed2c | 356 | |
422d65e7 DE |
357 | /* Non-zero if this symbol was created by gdb. |
358 | Such symbols do not appear in the output of "info var|fun". */ | |
359 | unsigned int created_by_gdb : 1; | |
360 | ||
b887350f TT |
361 | /* Two flag bits provided for the use of the target. */ |
362 | unsigned int target_flag_1 : 1; | |
363 | unsigned int target_flag_2 : 1; | |
364 | ||
d9eaeb59 JB |
365 | /* Nonzero iff the size of the minimal symbol has been set. |
366 | Symbol size information can sometimes not be determined, because | |
367 | the object file format may not carry that piece of information. */ | |
368 | unsigned int has_size : 1; | |
369 | ||
17c5ed2c DC |
370 | /* Minimal symbols with the same hash key are kept on a linked |
371 | list. This is the link. */ | |
372 | ||
373 | struct minimal_symbol *hash_next; | |
374 | ||
375 | /* Minimal symbols are stored in two different hash tables. This is | |
376 | the `next' pointer for the demangled hash table. */ | |
377 | ||
378 | struct minimal_symbol *demangled_hash_next; | |
379 | }; | |
c906108c | 380 | |
b887350f TT |
381 | #define MSYMBOL_TARGET_FLAG_1(msymbol) (msymbol)->target_flag_1 |
382 | #define MSYMBOL_TARGET_FLAG_2(msymbol) (msymbol)->target_flag_2 | |
d9eaeb59 JB |
383 | #define MSYMBOL_SIZE(msymbol) ((msymbol)->size + 0) |
384 | #define SET_MSYMBOL_SIZE(msymbol, sz) \ | |
385 | do \ | |
386 | { \ | |
387 | (msymbol)->size = sz; \ | |
388 | (msymbol)->has_size = 1; \ | |
389 | } while (0) | |
390 | #define MSYMBOL_HAS_SIZE(msymbol) ((msymbol)->has_size + 0) | |
c906108c | 391 | #define MSYMBOL_TYPE(msymbol) (msymbol)->type |
c906108c | 392 | |
efd66ac6 | 393 | #define MSYMBOL_VALUE(symbol) (symbol)->mginfo.value.ivalue |
77e371c0 TT |
394 | /* The unrelocated address of the minimal symbol. */ |
395 | #define MSYMBOL_VALUE_RAW_ADDRESS(symbol) ((symbol)->mginfo.value.address + 0) | |
2273f0ac TT |
396 | /* The relocated address of the minimal symbol, using the section |
397 | offsets from OBJFILE. */ | |
77e371c0 TT |
398 | #define MSYMBOL_VALUE_ADDRESS(objfile, symbol) \ |
399 | ((symbol)->mginfo.value.address \ | |
2273f0ac | 400 | + ANOFFSET ((objfile)->section_offsets, ((symbol)->mginfo.section))) |
77e371c0 TT |
401 | /* For a bound minsym, we can easily compute the address directly. */ |
402 | #define BMSYMBOL_VALUE_ADDRESS(symbol) \ | |
403 | MSYMBOL_VALUE_ADDRESS ((symbol).objfile, (symbol).minsym) | |
404 | #define SET_MSYMBOL_VALUE_ADDRESS(symbol, new_value) \ | |
40c1a007 | 405 | ((symbol)->mginfo.value.address = (new_value)) |
efd66ac6 TT |
406 | #define MSYMBOL_VALUE_BYTES(symbol) (symbol)->mginfo.value.bytes |
407 | #define MSYMBOL_BLOCK_VALUE(symbol) (symbol)->mginfo.value.block | |
408 | #define MSYMBOL_VALUE_CHAIN(symbol) (symbol)->mginfo.value.chain | |
409 | #define MSYMBOL_LANGUAGE(symbol) (symbol)->mginfo.language | |
410 | #define MSYMBOL_SECTION(symbol) (symbol)->mginfo.section | |
411 | #define MSYMBOL_OBJ_SECTION(objfile, symbol) \ | |
412 | (((symbol)->mginfo.section >= 0) \ | |
413 | ? (&(((objfile)->sections)[(symbol)->mginfo.section])) \ | |
414 | : NULL) | |
415 | ||
416 | #define MSYMBOL_NATURAL_NAME(symbol) \ | |
417 | (symbol_natural_name (&(symbol)->mginfo)) | |
418 | #define MSYMBOL_LINKAGE_NAME(symbol) (symbol)->mginfo.name | |
419 | #define MSYMBOL_PRINT_NAME(symbol) \ | |
420 | (demangle ? MSYMBOL_NATURAL_NAME (symbol) : MSYMBOL_LINKAGE_NAME (symbol)) | |
421 | #define MSYMBOL_DEMANGLED_NAME(symbol) \ | |
422 | (symbol_demangled_name (&(symbol)->mginfo)) | |
423 | #define MSYMBOL_SET_LANGUAGE(symbol,language,obstack) \ | |
424 | (symbol_set_language (&(symbol)->mginfo, (language), (obstack))) | |
425 | #define MSYMBOL_SEARCH_NAME(symbol) \ | |
426 | (symbol_search_name (&(symbol)->mginfo)) | |
427 | #define MSYMBOL_MATCHES_SEARCH_NAME(symbol, name) \ | |
428 | (strcmp_iw (MSYMBOL_SEARCH_NAME (symbol), (name)) == 0) | |
429 | #define MSYMBOL_SET_NAMES(symbol,linkage_name,len,copy_name,objfile) \ | |
430 | symbol_set_names (&(symbol)->mginfo, linkage_name, len, copy_name, objfile) | |
431 | ||
c35384fb TT |
432 | #include "minsyms.h" |
433 | ||
c906108c | 434 | \f |
c5aa993b | 435 | |
c906108c SS |
436 | /* Represent one symbol name; a variable, constant, function or typedef. */ |
437 | ||
176620f1 | 438 | /* Different name domains for symbols. Looking up a symbol specifies a |
c378eb4e | 439 | domain and ignores symbol definitions in other name domains. */ |
c906108c | 440 | |
87193939 | 441 | typedef enum domain_enum_tag |
17c5ed2c | 442 | { |
176620f1 | 443 | /* UNDEF_DOMAIN is used when a domain has not been discovered or |
17c5ed2c | 444 | none of the following apply. This usually indicates an error either |
c378eb4e | 445 | in the symbol information or in gdb's handling of symbols. */ |
c906108c | 446 | |
176620f1 | 447 | UNDEF_DOMAIN, |
c906108c | 448 | |
176620f1 | 449 | /* VAR_DOMAIN is the usual domain. In C, this contains variables, |
c378eb4e | 450 | function names, typedef names and enum type values. */ |
c906108c | 451 | |
176620f1 | 452 | VAR_DOMAIN, |
c906108c | 453 | |
176620f1 | 454 | /* STRUCT_DOMAIN is used in C to hold struct, union and enum type names. |
17c5ed2c | 455 | Thus, if `struct foo' is used in a C program, it produces a symbol named |
c378eb4e | 456 | `foo' in the STRUCT_DOMAIN. */ |
c906108c | 457 | |
176620f1 | 458 | STRUCT_DOMAIN, |
c906108c | 459 | |
530e8392 KB |
460 | /* MODULE_DOMAIN is used in Fortran to hold module type names. */ |
461 | ||
462 | MODULE_DOMAIN, | |
463 | ||
0f5238ed | 464 | /* LABEL_DOMAIN may be used for names of labels (for gotos). */ |
c906108c | 465 | |
4357ac6c TT |
466 | LABEL_DOMAIN, |
467 | ||
5a352474 JK |
468 | /* Fortran common blocks. Their naming must be separate from VAR_DOMAIN. |
469 | They also always use LOC_COMMON_BLOCK. */ | |
4357ac6c | 470 | COMMON_BLOCK_DOMAIN |
8903c50d | 471 | } domain_enum; |
c906108c | 472 | |
20c681d1 DE |
473 | extern const char *domain_name (domain_enum); |
474 | ||
e8930875 JK |
475 | /* Searching domains, used for `search_symbols'. Element numbers are |
476 | hardcoded in GDB, check all enum uses before changing it. */ | |
c906108c | 477 | |
8903c50d TT |
478 | enum search_domain |
479 | { | |
bd2e94ce TT |
480 | /* Everything in VAR_DOMAIN minus FUNCTIONS_DOMAIN and |
481 | TYPES_DOMAIN. */ | |
e8930875 | 482 | VARIABLES_DOMAIN = 0, |
c906108c | 483 | |
c378eb4e | 484 | /* All functions -- for some reason not methods, though. */ |
e8930875 | 485 | FUNCTIONS_DOMAIN = 1, |
c906108c | 486 | |
17c5ed2c | 487 | /* All defined types */ |
e8930875 | 488 | TYPES_DOMAIN = 2, |
7b08b9eb JK |
489 | |
490 | /* Any type. */ | |
491 | ALL_DOMAIN = 3 | |
8903c50d | 492 | }; |
c906108c | 493 | |
20c681d1 DE |
494 | extern const char *search_domain_name (enum search_domain); |
495 | ||
c906108c SS |
496 | /* An address-class says where to find the value of a symbol. */ |
497 | ||
498 | enum address_class | |
17c5ed2c | 499 | { |
c378eb4e | 500 | /* Not used; catches errors. */ |
c5aa993b | 501 | |
17c5ed2c | 502 | LOC_UNDEF, |
c906108c | 503 | |
c378eb4e | 504 | /* Value is constant int SYMBOL_VALUE, host byteorder. */ |
c906108c | 505 | |
17c5ed2c | 506 | LOC_CONST, |
c906108c | 507 | |
c378eb4e | 508 | /* Value is at fixed address SYMBOL_VALUE_ADDRESS. */ |
c906108c | 509 | |
17c5ed2c | 510 | LOC_STATIC, |
c906108c | 511 | |
768a979c UW |
512 | /* Value is in register. SYMBOL_VALUE is the register number |
513 | in the original debug format. SYMBOL_REGISTER_OPS holds a | |
514 | function that can be called to transform this into the | |
515 | actual register number this represents in a specific target | |
516 | architecture (gdbarch). | |
2a2d4dc3 AS |
517 | |
518 | For some symbol formats (stabs, for some compilers at least), | |
519 | the compiler generates two symbols, an argument and a register. | |
520 | In some cases we combine them to a single LOC_REGISTER in symbol | |
521 | reading, but currently not for all cases (e.g. it's passed on the | |
522 | stack and then loaded into a register). */ | |
c906108c | 523 | |
17c5ed2c | 524 | LOC_REGISTER, |
c906108c | 525 | |
17c5ed2c | 526 | /* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */ |
c906108c | 527 | |
17c5ed2c | 528 | LOC_ARG, |
c906108c | 529 | |
17c5ed2c | 530 | /* Value address is at SYMBOL_VALUE offset in arglist. */ |
c906108c | 531 | |
17c5ed2c | 532 | LOC_REF_ARG, |
c906108c | 533 | |
2a2d4dc3 | 534 | /* Value is in specified register. Just like LOC_REGISTER except the |
17c5ed2c | 535 | register holds the address of the argument instead of the argument |
c378eb4e | 536 | itself. This is currently used for the passing of structs and unions |
17c5ed2c DC |
537 | on sparc and hppa. It is also used for call by reference where the |
538 | address is in a register, at least by mipsread.c. */ | |
c906108c | 539 | |
17c5ed2c | 540 | LOC_REGPARM_ADDR, |
c906108c | 541 | |
17c5ed2c | 542 | /* Value is a local variable at SYMBOL_VALUE offset in stack frame. */ |
c906108c | 543 | |
17c5ed2c | 544 | LOC_LOCAL, |
c906108c | 545 | |
176620f1 EZ |
546 | /* Value not used; definition in SYMBOL_TYPE. Symbols in the domain |
547 | STRUCT_DOMAIN all have this class. */ | |
c906108c | 548 | |
17c5ed2c | 549 | LOC_TYPEDEF, |
c906108c | 550 | |
c378eb4e | 551 | /* Value is address SYMBOL_VALUE_ADDRESS in the code. */ |
c906108c | 552 | |
17c5ed2c | 553 | LOC_LABEL, |
c906108c | 554 | |
17c5ed2c DC |
555 | /* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'. |
556 | In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address | |
c378eb4e | 557 | of the block. Function names have this class. */ |
c906108c | 558 | |
17c5ed2c | 559 | LOC_BLOCK, |
c906108c | 560 | |
17c5ed2c DC |
561 | /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in |
562 | target byte order. */ | |
c906108c | 563 | |
17c5ed2c | 564 | LOC_CONST_BYTES, |
c906108c | 565 | |
17c5ed2c DC |
566 | /* Value is at fixed address, but the address of the variable has |
567 | to be determined from the minimal symbol table whenever the | |
568 | variable is referenced. | |
569 | This happens if debugging information for a global symbol is | |
570 | emitted and the corresponding minimal symbol is defined | |
571 | in another object file or runtime common storage. | |
572 | The linker might even remove the minimal symbol if the global | |
573 | symbol is never referenced, in which case the symbol remains | |
de40b933 JK |
574 | unresolved. |
575 | ||
576 | GDB would normally find the symbol in the minimal symbol table if it will | |
577 | not find it in the full symbol table. But a reference to an external | |
578 | symbol in a local block shadowing other definition requires full symbol | |
579 | without possibly having its address available for LOC_STATIC. Testcase | |
580 | is provided as `gdb.dwarf2/dw2-unresolved.exp'. */ | |
c906108c | 581 | |
17c5ed2c | 582 | LOC_UNRESOLVED, |
c906108c | 583 | |
17c5ed2c DC |
584 | /* The variable does not actually exist in the program. |
585 | The value is ignored. */ | |
c906108c | 586 | |
17c5ed2c | 587 | LOC_OPTIMIZED_OUT, |
c906108c | 588 | |
4c2df51b | 589 | /* The variable's address is computed by a set of location |
768a979c | 590 | functions (see "struct symbol_computed_ops" below). */ |
4c2df51b | 591 | LOC_COMPUTED, |
5a352474 JK |
592 | |
593 | /* The variable uses general_symbol_info->value->common_block field. | |
594 | It also always uses COMMON_BLOCK_DOMAIN. */ | |
595 | LOC_COMMON_BLOCK, | |
f1e6e072 TT |
596 | |
597 | /* Not used, just notes the boundary of the enum. */ | |
598 | LOC_FINAL_VALUE | |
4c2df51b DJ |
599 | }; |
600 | ||
768a979c | 601 | /* The methods needed to implement LOC_COMPUTED. These methods can |
a67af2b9 AC |
602 | use the symbol's .aux_value for additional per-symbol information. |
603 | ||
604 | At present this is only used to implement location expressions. */ | |
605 | ||
768a979c | 606 | struct symbol_computed_ops |
4c2df51b DJ |
607 | { |
608 | ||
609 | /* Return the value of the variable SYMBOL, relative to the stack | |
610 | frame FRAME. If the variable has been optimized out, return | |
611 | zero. | |
612 | ||
613 | Iff `read_needs_frame (SYMBOL)' is zero, then FRAME may be zero. */ | |
614 | ||
615 | struct value *(*read_variable) (struct symbol * symbol, | |
616 | struct frame_info * frame); | |
617 | ||
e18b2753 JK |
618 | /* Read variable SYMBOL like read_variable at (callee) FRAME's function |
619 | entry. SYMBOL should be a function parameter, otherwise | |
620 | NO_ENTRY_VALUE_ERROR will be thrown. */ | |
621 | struct value *(*read_variable_at_entry) (struct symbol *symbol, | |
622 | struct frame_info *frame); | |
623 | ||
4c2df51b DJ |
624 | /* Return non-zero if we need a frame to find the value of the SYMBOL. */ |
625 | int (*read_needs_frame) (struct symbol * symbol); | |
626 | ||
627 | /* Write to STREAM a natural-language description of the location of | |
08922a10 SS |
628 | SYMBOL, in the context of ADDR. */ |
629 | void (*describe_location) (struct symbol * symbol, CORE_ADDR addr, | |
630 | struct ui_file * stream); | |
4c2df51b | 631 | |
f1e6e072 TT |
632 | /* Non-zero if this symbol's address computation is dependent on PC. */ |
633 | unsigned char location_has_loclist; | |
634 | ||
4c2df51b DJ |
635 | /* Tracepoint support. Append bytecodes to the tracepoint agent |
636 | expression AX that push the address of the object SYMBOL. Set | |
637 | VALUE appropriately. Note --- for objects in registers, this | |
638 | needn't emit any code; as long as it sets VALUE properly, then | |
639 | the caller will generate the right code in the process of | |
640 | treating this as an lvalue or rvalue. */ | |
641 | ||
505e835d UW |
642 | void (*tracepoint_var_ref) (struct symbol *symbol, struct gdbarch *gdbarch, |
643 | struct agent_expr *ax, struct axs_value *value); | |
17c5ed2c | 644 | }; |
c906108c | 645 | |
f1e6e072 TT |
646 | /* The methods needed to implement LOC_BLOCK for inferior functions. |
647 | These methods can use the symbol's .aux_value for additional | |
648 | per-symbol information. */ | |
649 | ||
650 | struct symbol_block_ops | |
651 | { | |
652 | /* Fill in *START and *LENGTH with DWARF block data of function | |
653 | FRAMEFUNC valid for inferior context address PC. Set *LENGTH to | |
654 | zero if such location is not valid for PC; *START is left | |
655 | uninitialized in such case. */ | |
656 | void (*find_frame_base_location) (struct symbol *framefunc, CORE_ADDR pc, | |
657 | const gdb_byte **start, size_t *length); | |
658 | }; | |
659 | ||
768a979c UW |
660 | /* Functions used with LOC_REGISTER and LOC_REGPARM_ADDR. */ |
661 | ||
662 | struct symbol_register_ops | |
663 | { | |
664 | int (*register_number) (struct symbol *symbol, struct gdbarch *gdbarch); | |
665 | }; | |
666 | ||
f1e6e072 TT |
667 | /* Objects of this type are used to find the address class and the |
668 | various computed ops vectors of a symbol. */ | |
669 | ||
670 | struct symbol_impl | |
671 | { | |
672 | enum address_class aclass; | |
673 | ||
674 | /* Used with LOC_COMPUTED. */ | |
675 | const struct symbol_computed_ops *ops_computed; | |
676 | ||
677 | /* Used with LOC_BLOCK. */ | |
678 | const struct symbol_block_ops *ops_block; | |
679 | ||
680 | /* Used with LOC_REGISTER and LOC_REGPARM_ADDR. */ | |
681 | const struct symbol_register_ops *ops_register; | |
682 | }; | |
683 | ||
684 | /* The number of bits we reserve in a symbol for the aclass index. | |
685 | This is a #define so that we can have a assertion elsewhere to | |
686 | verify that we have reserved enough space for synthetic address | |
687 | classes. */ | |
688 | ||
689 | #define SYMBOL_ACLASS_BITS 6 | |
690 | ||
c378eb4e | 691 | /* This structure is space critical. See space comments at the top. */ |
a7f19c79 | 692 | |
c906108c | 693 | struct symbol |
17c5ed2c | 694 | { |
c906108c | 695 | |
c378eb4e | 696 | /* The general symbol info required for all types of symbols. */ |
c906108c | 697 | |
17c5ed2c | 698 | struct general_symbol_info ginfo; |
c906108c | 699 | |
17c5ed2c | 700 | /* Data type of value */ |
c906108c | 701 | |
17c5ed2c | 702 | struct type *type; |
c906108c | 703 | |
cb1df416 | 704 | /* The symbol table containing this symbol. This is the file |
cd55e50f JK |
705 | associated with LINE. It can be NULL during symbols read-in but it is |
706 | never NULL during normal operation. */ | |
cb1df416 DJ |
707 | struct symtab *symtab; |
708 | ||
176620f1 | 709 | /* Domain code. */ |
c906108c | 710 | |
87193939 | 711 | ENUM_BITFIELD(domain_enum_tag) domain : 6; |
c906108c | 712 | |
f1e6e072 TT |
713 | /* Address class. This holds an index into the 'symbol_impls' |
714 | table. The actual enum address_class value is stored there, | |
715 | alongside any per-class ops vectors. */ | |
c906108c | 716 | |
f1e6e072 | 717 | unsigned int aclass_index : SYMBOL_ACLASS_BITS; |
c906108c | 718 | |
2a2d4dc3 AS |
719 | /* Whether this is an argument. */ |
720 | ||
721 | unsigned is_argument : 1; | |
722 | ||
edb3359d DJ |
723 | /* Whether this is an inlined function (class LOC_BLOCK only). */ |
724 | unsigned is_inlined : 1; | |
725 | ||
34eaf542 TT |
726 | /* True if this is a C++ function symbol with template arguments. |
727 | In this case the symbol is really a "struct template_symbol". */ | |
728 | unsigned is_cplus_template_function : 1; | |
729 | ||
edb3359d DJ |
730 | /* Line number of this symbol's definition, except for inlined |
731 | functions. For an inlined function (class LOC_BLOCK and | |
732 | SYMBOL_INLINED set) this is the line number of the function's call | |
733 | site. Inlined function symbols are not definitions, and they are | |
734 | never found by symbol table lookup. | |
735 | ||
736 | FIXME: Should we really make the assumption that nobody will try | |
737 | to debug files longer than 64K lines? What about machine | |
738 | generated programs? */ | |
c906108c | 739 | |
17c5ed2c | 740 | unsigned short line; |
c906108c | 741 | |
10f4ecb8 UW |
742 | /* An arbitrary data pointer, allowing symbol readers to record |
743 | additional information on a per-symbol basis. Note that this data | |
744 | must be allocated using the same obstack as the symbol itself. */ | |
2a2d4dc3 | 745 | /* So far it is only used by LOC_COMPUTED to |
10f4ecb8 UW |
746 | find the location information. For a LOC_BLOCK symbol |
747 | for a function in a compilation unit compiled with DWARF 2 | |
748 | information, this is information used internally by the DWARF 2 | |
749 | code --- specifically, the location expression for the frame | |
750 | base for this function. */ | |
751 | /* FIXME drow/2003-02-21: For the LOC_BLOCK case, it might be better | |
752 | to add a magic symbol to the block containing this information, | |
753 | or to have a generic debug info annotation slot for symbols. */ | |
754 | ||
755 | void *aux_value; | |
c906108c | 756 | |
17c5ed2c DC |
757 | struct symbol *hash_next; |
758 | }; | |
c906108c | 759 | |
f1e6e072 | 760 | extern const struct symbol_impl *symbol_impls; |
c906108c | 761 | |
176620f1 | 762 | #define SYMBOL_DOMAIN(symbol) (symbol)->domain |
f1e6e072 TT |
763 | #define SYMBOL_IMPL(symbol) (symbol_impls[(symbol)->aclass_index]) |
764 | #define SYMBOL_ACLASS_INDEX(symbol) (symbol)->aclass_index | |
765 | #define SYMBOL_CLASS(symbol) (SYMBOL_IMPL (symbol).aclass) | |
2a2d4dc3 | 766 | #define SYMBOL_IS_ARGUMENT(symbol) (symbol)->is_argument |
edb3359d | 767 | #define SYMBOL_INLINED(symbol) (symbol)->is_inlined |
34eaf542 TT |
768 | #define SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION(symbol) \ |
769 | (symbol)->is_cplus_template_function | |
c906108c SS |
770 | #define SYMBOL_TYPE(symbol) (symbol)->type |
771 | #define SYMBOL_LINE(symbol) (symbol)->line | |
cb1df416 | 772 | #define SYMBOL_SYMTAB(symbol) (symbol)->symtab |
f1e6e072 TT |
773 | #define SYMBOL_COMPUTED_OPS(symbol) (SYMBOL_IMPL (symbol).ops_computed) |
774 | #define SYMBOL_BLOCK_OPS(symbol) (SYMBOL_IMPL (symbol).ops_block) | |
775 | #define SYMBOL_REGISTER_OPS(symbol) (SYMBOL_IMPL (symbol).ops_register) | |
10f4ecb8 | 776 | #define SYMBOL_LOCATION_BATON(symbol) (symbol)->aux_value |
e27d198c | 777 | #define SYMBOL_OBJFILE(symbol) (SYMBOL_SYMTAB (symbol)->objfile) |
34eaf542 | 778 | |
f1e6e072 TT |
779 | extern int register_symbol_computed_impl (enum address_class, |
780 | const struct symbol_computed_ops *); | |
781 | ||
782 | extern int register_symbol_block_impl (enum address_class aclass, | |
783 | const struct symbol_block_ops *ops); | |
784 | ||
785 | extern int register_symbol_register_impl (enum address_class, | |
786 | const struct symbol_register_ops *); | |
787 | ||
34eaf542 TT |
788 | /* An instance of this type is used to represent a C++ template |
789 | function. It includes a "struct symbol" as a kind of base class; | |
790 | users downcast to "struct template_symbol *" when needed. A symbol | |
791 | is really of this type iff SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION is | |
792 | true. */ | |
793 | ||
794 | struct template_symbol | |
795 | { | |
796 | /* The base class. */ | |
797 | struct symbol base; | |
798 | ||
799 | /* The number of template arguments. */ | |
800 | int n_template_arguments; | |
801 | ||
802 | /* The template arguments. This is an array with | |
803 | N_TEMPLATE_ARGUMENTS elements. */ | |
804 | struct symbol **template_arguments; | |
805 | }; | |
806 | ||
c906108c | 807 | \f |
c906108c SS |
808 | /* Each item represents a line-->pc (or the reverse) mapping. This is |
809 | somewhat more wasteful of space than one might wish, but since only | |
810 | the files which are actually debugged are read in to core, we don't | |
811 | waste much space. */ | |
812 | ||
813 | struct linetable_entry | |
17c5ed2c DC |
814 | { |
815 | int line; | |
816 | CORE_ADDR pc; | |
817 | }; | |
c906108c SS |
818 | |
819 | /* The order of entries in the linetable is significant. They should | |
820 | be sorted by increasing values of the pc field. If there is more than | |
821 | one entry for a given pc, then I'm not sure what should happen (and | |
822 | I not sure whether we currently handle it the best way). | |
823 | ||
824 | Example: a C for statement generally looks like this | |
825 | ||
c5aa993b JM |
826 | 10 0x100 - for the init/test part of a for stmt. |
827 | 20 0x200 | |
828 | 30 0x300 | |
829 | 10 0x400 - for the increment part of a for stmt. | |
c906108c | 830 | |
e8717518 FF |
831 | If an entry has a line number of zero, it marks the start of a PC |
832 | range for which no line number information is available. It is | |
833 | acceptable, though wasteful of table space, for such a range to be | |
834 | zero length. */ | |
c906108c SS |
835 | |
836 | struct linetable | |
17c5ed2c DC |
837 | { |
838 | int nitems; | |
c906108c | 839 | |
17c5ed2c DC |
840 | /* Actually NITEMS elements. If you don't like this use of the |
841 | `struct hack', you can shove it up your ANSI (seriously, if the | |
842 | committee tells us how to do it, we can probably go along). */ | |
843 | struct linetable_entry item[1]; | |
844 | }; | |
c906108c | 845 | |
c906108c SS |
846 | /* How to relocate the symbols from each section in a symbol file. |
847 | Each struct contains an array of offsets. | |
848 | The ordering and meaning of the offsets is file-type-dependent; | |
849 | typically it is indexed by section numbers or symbol types or | |
850 | something like that. | |
851 | ||
852 | To give us flexibility in changing the internal representation | |
853 | of these offsets, the ANOFFSET macro must be used to insert and | |
854 | extract offset values in the struct. */ | |
855 | ||
856 | struct section_offsets | |
17c5ed2c | 857 | { |
c378eb4e | 858 | CORE_ADDR offsets[1]; /* As many as needed. */ |
17c5ed2c | 859 | }; |
c906108c | 860 | |
a4c8257b | 861 | #define ANOFFSET(secoff, whichone) \ |
3e43a32a MS |
862 | ((whichone == -1) \ |
863 | ? (internal_error (__FILE__, __LINE__, \ | |
864 | _("Section index is uninitialized")), -1) \ | |
865 | : secoff->offsets[whichone]) | |
c906108c | 866 | |
b29c9944 JB |
867 | /* The size of a section_offsets table for N sections. */ |
868 | #define SIZEOF_N_SECTION_OFFSETS(n) \ | |
c906108c | 869 | (sizeof (struct section_offsets) \ |
b29c9944 JB |
870 | + sizeof (((struct section_offsets *) 0)->offsets) * ((n)-1)) |
871 | ||
c378eb4e | 872 | /* Each source file or header is represented by a struct symtab. |
c906108c SS |
873 | These objects are chained through the `next' field. */ |
874 | ||
875 | struct symtab | |
17c5ed2c | 876 | { |
93b55aa1 | 877 | /* Unordered chain of all existing symtabs of this objfile. */ |
c906108c | 878 | |
17c5ed2c | 879 | struct symtab *next; |
c906108c | 880 | |
17c5ed2c DC |
881 | /* List of all symbol scope blocks for this symtab. May be shared |
882 | between different symtabs (and normally is for all the symtabs | |
883 | in a given compilation unit). */ | |
c906108c | 884 | |
346d1dfe | 885 | const struct blockvector *blockvector; |
c906108c | 886 | |
17c5ed2c DC |
887 | /* Table mapping core addresses to line numbers for this file. |
888 | Can be NULL if none. Never shared between different symtabs. */ | |
c906108c | 889 | |
17c5ed2c | 890 | struct linetable *linetable; |
c906108c | 891 | |
17c5ed2c DC |
892 | /* Section in objfile->section_offsets for the blockvector and |
893 | the linetable. Probably always SECT_OFF_TEXT. */ | |
c906108c | 894 | |
17c5ed2c | 895 | int block_line_section; |
c906108c | 896 | |
17c5ed2c DC |
897 | /* If several symtabs share a blockvector, exactly one of them |
898 | should be designated the primary, so that the blockvector | |
899 | is relocated exactly once by objfile_relocate. */ | |
c906108c | 900 | |
8be455d7 JK |
901 | unsigned int primary : 1; |
902 | ||
903 | /* Symtab has been compiled with both optimizations and debug info so that | |
904 | GDB may stop skipping prologues as variables locations are valid already | |
905 | at function entry points. */ | |
906 | ||
907 | unsigned int locations_valid : 1; | |
c906108c | 908 | |
e0d00bc7 JK |
909 | /* DWARF unwinder for this CU is valid even for epilogues (PC at the return |
910 | instruction). This is supported by GCC since 4.5.0. */ | |
911 | ||
912 | unsigned int epilogue_unwind_valid : 1; | |
913 | ||
17c5ed2c DC |
914 | /* The macro table for this symtab. Like the blockvector, this |
915 | may be shared between different symtabs --- and normally is for | |
916 | all the symtabs in a given compilation unit. */ | |
917 | struct macro_table *macro_table; | |
99d9066e | 918 | |
4e04028d | 919 | /* Name of this source file. This pointer is never NULL. */ |
c906108c | 920 | |
21ea9eec | 921 | const char *filename; |
c906108c | 922 | |
17c5ed2c | 923 | /* Directory in which it was compiled, or NULL if we don't know. */ |
c906108c | 924 | |
8e96694e | 925 | const char *dirname; |
c906108c | 926 | |
17c5ed2c | 927 | /* Total number of lines found in source file. */ |
c906108c | 928 | |
17c5ed2c | 929 | int nlines; |
c906108c | 930 | |
17c5ed2c DC |
931 | /* line_charpos[N] is the position of the (N-1)th line of the |
932 | source file. "position" means something we can lseek() to; it | |
933 | is not guaranteed to be useful any other way. */ | |
c906108c | 934 | |
17c5ed2c | 935 | int *line_charpos; |
c906108c | 936 | |
17c5ed2c | 937 | /* Language of this source file. */ |
c906108c | 938 | |
17c5ed2c | 939 | enum language language; |
c906108c | 940 | |
17c5ed2c DC |
941 | /* String that identifies the format of the debugging information, such |
942 | as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful | |
943 | for automated testing of gdb but may also be information that is | |
c378eb4e | 944 | useful to the user. */ |
c906108c | 945 | |
554d387d | 946 | const char *debugformat; |
c906108c | 947 | |
303b6f5d | 948 | /* String of producer version information. May be zero. */ |
c906108c | 949 | |
554d387d | 950 | const char *producer; |
c906108c | 951 | |
17c5ed2c DC |
952 | /* Full name of file as found by searching the source path. |
953 | NULL if not yet known. */ | |
c906108c | 954 | |
17c5ed2c | 955 | char *fullname; |
c906108c | 956 | |
17c5ed2c | 957 | /* Object file from which this symbol information was read. */ |
c906108c | 958 | |
17c5ed2c | 959 | struct objfile *objfile; |
c906108c | 960 | |
8e3b41a9 JK |
961 | /* struct call_site entries for this compilation unit or NULL. */ |
962 | ||
963 | htab_t call_site_htab; | |
b5b04b5b TT |
964 | |
965 | /* If non-NULL, then this points to a NULL-terminated vector of | |
966 | included symbol tables. When searching the static or global | |
967 | block of this symbol table, the corresponding block of all | |
968 | included symbol tables will also be searched. Note that this | |
969 | list must be flattened -- the symbol reader is responsible for | |
970 | ensuring that this vector contains the transitive closure of all | |
971 | included symbol tables. */ | |
972 | ||
973 | struct symtab **includes; | |
974 | ||
975 | /* If this is an included symbol table, this points to one includer | |
976 | of the table. This user is considered the canonical symbol table | |
977 | containing this one. An included symbol table may itself be | |
978 | included by another. */ | |
979 | ||
980 | struct symtab *user; | |
17c5ed2c | 981 | }; |
c906108c SS |
982 | |
983 | #define BLOCKVECTOR(symtab) (symtab)->blockvector | |
984 | #define LINETABLE(symtab) (symtab)->linetable | |
6c95b8df | 985 | #define SYMTAB_PSPACE(symtab) (symtab)->objfile->pspace |
ec94af83 | 986 | |
db0fec5c DE |
987 | /* Call this to set the "primary" field in struct symtab. */ |
988 | extern void set_symtab_primary (struct symtab *, int primary); | |
989 | ||
ec94af83 DE |
990 | typedef struct symtab *symtab_ptr; |
991 | DEF_VEC_P (symtab_ptr); | |
992 | ||
c906108c | 993 | \f |
c5aa993b | 994 | |
c906108c | 995 | /* The virtual function table is now an array of structures which have the |
a960f249 | 996 | form { int16 offset, delta; void *pfn; }. |
c906108c SS |
997 | |
998 | In normal virtual function tables, OFFSET is unused. | |
999 | DELTA is the amount which is added to the apparent object's base | |
1000 | address in order to point to the actual object to which the | |
1001 | virtual function should be applied. | |
1002 | PFN is a pointer to the virtual function. | |
1003 | ||
c378eb4e | 1004 | Note that this macro is g++ specific (FIXME). */ |
c5aa993b | 1005 | |
c906108c SS |
1006 | #define VTBL_FNADDR_OFFSET 2 |
1007 | ||
c378eb4e | 1008 | /* External variables and functions for the objects described above. */ |
c906108c | 1009 | |
c378eb4e | 1010 | /* True if we are nested inside psymtab_to_symtab. */ |
c906108c SS |
1011 | |
1012 | extern int currently_reading_symtab; | |
1013 | ||
f08e8df3 DE |
1014 | /* The block in which the most recently looked up symbol was found. */ |
1015 | ||
1016 | extern const struct block *block_found; | |
1017 | ||
c906108c SS |
1018 | /* symtab.c lookup functions */ |
1019 | ||
7fc830e2 MK |
1020 | extern const char multiple_symbols_ask[]; |
1021 | extern const char multiple_symbols_all[]; | |
1022 | extern const char multiple_symbols_cancel[]; | |
717d2f5a JB |
1023 | |
1024 | const char *multiple_symbols_select_mode (void); | |
1025 | ||
4186eb54 KS |
1026 | int symbol_matches_domain (enum language symbol_language, |
1027 | domain_enum symbol_domain, | |
1028 | domain_enum domain); | |
1029 | ||
c378eb4e | 1030 | /* lookup a symbol table by source file name. */ |
c906108c | 1031 | |
1f8cc6db | 1032 | extern struct symtab *lookup_symtab (const char *); |
c906108c | 1033 | |
1993b719 TT |
1034 | /* An object of this type is passed as the 'is_a_field_of_this' |
1035 | argument to lookup_symbol and lookup_symbol_in_language. */ | |
1036 | ||
1037 | struct field_of_this_result | |
1038 | { | |
1039 | /* The type in which the field was found. If this is NULL then the | |
1040 | symbol was not found in 'this'. If non-NULL, then one of the | |
1041 | other fields will be non-NULL as well. */ | |
1042 | ||
1043 | struct type *type; | |
1044 | ||
1045 | /* If the symbol was found as an ordinary field of 'this', then this | |
1046 | is non-NULL and points to the particular field. */ | |
1047 | ||
1048 | struct field *field; | |
1049 | ||
cf901d3b | 1050 | /* If the symbol was found as a function field of 'this', then this |
1993b719 TT |
1051 | is non-NULL and points to the particular field. */ |
1052 | ||
1053 | struct fn_fieldlist *fn_field; | |
1054 | }; | |
1055 | ||
cf901d3b DE |
1056 | /* Find the definition for a specified symbol name NAME |
1057 | in domain DOMAIN in language LANGUAGE, visible from lexical block BLOCK | |
1058 | if non-NULL or from global/static blocks if BLOCK is NULL. | |
1059 | Returns the struct symbol pointer, or NULL if no symbol is found. | |
1060 | C++: if IS_A_FIELD_OF_THIS is non-NULL on entry, check to see if | |
1061 | NAME is a field of the current implied argument `this'. If so fill in the | |
1062 | fields of IS_A_FIELD_OF_THIS, otherwise the fields are set to NULL. | |
1063 | BLOCK_FOUND is set to the block in which NAME is found (in the case of | |
1064 | a field of `this', value_of_this sets BLOCK_FOUND to the proper value). | |
1065 | The symbol's section is fixed up if necessary. */ | |
53c5240f PA |
1066 | |
1067 | extern struct symbol *lookup_symbol_in_language (const char *, | |
1068 | const struct block *, | |
1069 | const domain_enum, | |
1070 | enum language, | |
1993b719 | 1071 | struct field_of_this_result *); |
53c5240f | 1072 | |
cf901d3b | 1073 | /* Same as lookup_symbol_in_language, but using the current language. */ |
c906108c | 1074 | |
a14ed312 | 1075 | extern struct symbol *lookup_symbol (const char *, const struct block *, |
1993b719 TT |
1076 | const domain_enum, |
1077 | struct field_of_this_result *); | |
c906108c | 1078 | |
5f9a71c3 | 1079 | /* A default version of lookup_symbol_nonlocal for use by languages |
cf901d3b DE |
1080 | that can't think of anything better to do. |
1081 | This implements the C lookup rules. */ | |
5f9a71c3 DC |
1082 | |
1083 | extern struct symbol *basic_lookup_symbol_nonlocal (const char *, | |
5f9a71c3 | 1084 | const struct block *, |
21b556f4 | 1085 | const domain_enum); |
5f9a71c3 DC |
1086 | |
1087 | /* Some helper functions for languages that need to write their own | |
1088 | lookup_symbol_nonlocal functions. */ | |
1089 | ||
1090 | /* Lookup a symbol in the static block associated to BLOCK, if there | |
cf901d3b DE |
1091 | is one; do nothing if BLOCK is NULL or a global block. |
1092 | Upon success sets BLOCK_FOUND and fixes up the symbol's section | |
1093 | if necessary. */ | |
5f9a71c3 DC |
1094 | |
1095 | extern struct symbol *lookup_symbol_static (const char *name, | |
5f9a71c3 | 1096 | const struct block *block, |
21b556f4 | 1097 | const domain_enum domain); |
5f9a71c3 | 1098 | |
cf901d3b DE |
1099 | /* Lookup a symbol in all files' global blocks. |
1100 | Upon success sets BLOCK_FOUND and fixes up the symbol's section | |
1101 | if necessary. */ | |
5f9a71c3 DC |
1102 | |
1103 | extern struct symbol *lookup_symbol_global (const char *name, | |
3a40aaa0 | 1104 | const struct block *block, |
21b556f4 | 1105 | const domain_enum domain); |
5f9a71c3 | 1106 | |
cf901d3b DE |
1107 | /* Lookup a symbol within the block BLOCK. |
1108 | Upon success sets BLOCK_FOUND and fixes up the symbol's section | |
1109 | if necessary. */ | |
5f9a71c3 DC |
1110 | |
1111 | extern struct symbol *lookup_symbol_aux_block (const char *name, | |
5f9a71c3 | 1112 | const struct block *block, |
21b556f4 | 1113 | const domain_enum domain); |
5f9a71c3 | 1114 | |
cf901d3b DE |
1115 | /* Look up the `this' symbol for LANG in BLOCK. Return the symbol if |
1116 | found, or NULL if not found. */ | |
1117 | ||
66a17cb6 TT |
1118 | extern struct symbol *lookup_language_this (const struct language_defn *lang, |
1119 | const struct block *block); | |
1120 | ||
cf901d3b DE |
1121 | /* Search all static file-level symbols for NAME from DOMAIN. |
1122 | Upon success sets BLOCK_FOUND and fixes up the symbol's section | |
1123 | if necessary. */ | |
41f62f39 | 1124 | |
cf901d3b DE |
1125 | extern struct symbol *lookup_static_symbol_aux (const char *name, |
1126 | const domain_enum domain); | |
41f62f39 | 1127 | |
cf901d3b | 1128 | /* Search BLOCK for symbol NAME in DOMAIN. */ |
c5aa993b | 1129 | |
a14ed312 | 1130 | extern struct symbol *lookup_block_symbol (const struct block *, const char *, |
176620f1 | 1131 | const domain_enum); |
c906108c | 1132 | |
cf901d3b | 1133 | /* Lookup a [struct, union, enum] by name, within a specified block. */ |
c906108c | 1134 | |
270140bd | 1135 | extern struct type *lookup_struct (const char *, const struct block *); |
c906108c | 1136 | |
270140bd | 1137 | extern struct type *lookup_union (const char *, const struct block *); |
c906108c | 1138 | |
270140bd | 1139 | extern struct type *lookup_enum (const char *, const struct block *); |
c906108c | 1140 | |
c906108c SS |
1141 | /* from blockframe.c: */ |
1142 | ||
c378eb4e | 1143 | /* lookup the function symbol corresponding to the address. */ |
c906108c | 1144 | |
a14ed312 | 1145 | extern struct symbol *find_pc_function (CORE_ADDR); |
c906108c | 1146 | |
c378eb4e | 1147 | /* lookup the function corresponding to the address and section. */ |
c906108c | 1148 | |
714835d5 | 1149 | extern struct symbol *find_pc_sect_function (CORE_ADDR, struct obj_section *); |
c5aa993b | 1150 | |
2c02bd72 | 1151 | extern int find_pc_partial_function_gnu_ifunc (CORE_ADDR pc, const char **name, |
11c81455 JK |
1152 | CORE_ADDR *address, |
1153 | CORE_ADDR *endaddr, | |
1154 | int *is_gnu_ifunc_p); | |
1155 | ||
c378eb4e | 1156 | /* lookup function from address, return name, start addr and end addr. */ |
c906108c | 1157 | |
2c02bd72 | 1158 | extern int find_pc_partial_function (CORE_ADDR, const char **, CORE_ADDR *, |
570b8f7c | 1159 | CORE_ADDR *); |
c906108c | 1160 | |
a14ed312 | 1161 | extern void clear_pc_function_cache (void); |
c906108c | 1162 | |
c378eb4e | 1163 | /* lookup partial symbol table by address and section. */ |
c906108c | 1164 | |
ccefe4c4 TT |
1165 | extern struct symtab *find_pc_sect_symtab_via_partial (CORE_ADDR, |
1166 | struct obj_section *); | |
c906108c | 1167 | |
c378eb4e | 1168 | /* lookup full symbol table by address. */ |
c906108c | 1169 | |
a14ed312 | 1170 | extern struct symtab *find_pc_symtab (CORE_ADDR); |
c906108c | 1171 | |
c378eb4e | 1172 | /* lookup full symbol table by address and section. */ |
c906108c | 1173 | |
714835d5 | 1174 | extern struct symtab *find_pc_sect_symtab (CORE_ADDR, struct obj_section *); |
c906108c | 1175 | |
a14ed312 | 1176 | extern int find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *); |
c906108c | 1177 | |
a14ed312 | 1178 | extern void reread_symbols (void); |
c906108c | 1179 | |
cf901d3b DE |
1180 | /* Look up a type named NAME in STRUCT_DOMAIN in the current language. |
1181 | The type returned must not be opaque -- i.e., must have at least one field | |
1182 | defined. */ | |
1183 | ||
a14ed312 | 1184 | extern struct type *lookup_transparent_type (const char *); |
c906108c | 1185 | |
cf901d3b | 1186 | extern struct type *basic_lookup_transparent_type (const char *); |
c906108c | 1187 | |
c378eb4e | 1188 | /* Macro for name of symbol to indicate a file compiled with gcc. */ |
c906108c SS |
1189 | #ifndef GCC_COMPILED_FLAG_SYMBOL |
1190 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
1191 | #endif | |
1192 | ||
c378eb4e | 1193 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ |
c906108c SS |
1194 | #ifndef GCC2_COMPILED_FLAG_SYMBOL |
1195 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
1196 | #endif | |
1197 | ||
0875794a JK |
1198 | extern int in_gnu_ifunc_stub (CORE_ADDR pc); |
1199 | ||
07be84bf JK |
1200 | /* Functions for resolving STT_GNU_IFUNC symbols which are implemented only |
1201 | for ELF symbol files. */ | |
1202 | ||
1203 | struct gnu_ifunc_fns | |
1204 | { | |
1205 | /* See elf_gnu_ifunc_resolve_addr for its real implementation. */ | |
1206 | CORE_ADDR (*gnu_ifunc_resolve_addr) (struct gdbarch *gdbarch, CORE_ADDR pc); | |
1207 | ||
1208 | /* See elf_gnu_ifunc_resolve_name for its real implementation. */ | |
1209 | int (*gnu_ifunc_resolve_name) (const char *function_name, | |
1210 | CORE_ADDR *function_address_p); | |
0e30163f JK |
1211 | |
1212 | /* See elf_gnu_ifunc_resolver_stop for its real implementation. */ | |
1213 | void (*gnu_ifunc_resolver_stop) (struct breakpoint *b); | |
1214 | ||
1215 | /* See elf_gnu_ifunc_resolver_return_stop for its real implementation. */ | |
1216 | void (*gnu_ifunc_resolver_return_stop) (struct breakpoint *b); | |
07be84bf JK |
1217 | }; |
1218 | ||
1219 | #define gnu_ifunc_resolve_addr gnu_ifunc_fns_p->gnu_ifunc_resolve_addr | |
1220 | #define gnu_ifunc_resolve_name gnu_ifunc_fns_p->gnu_ifunc_resolve_name | |
0e30163f JK |
1221 | #define gnu_ifunc_resolver_stop gnu_ifunc_fns_p->gnu_ifunc_resolver_stop |
1222 | #define gnu_ifunc_resolver_return_stop \ | |
1223 | gnu_ifunc_fns_p->gnu_ifunc_resolver_return_stop | |
07be84bf JK |
1224 | |
1225 | extern const struct gnu_ifunc_fns *gnu_ifunc_fns_p; | |
1226 | ||
52f729a7 | 1227 | extern CORE_ADDR find_solib_trampoline_target (struct frame_info *, CORE_ADDR); |
c906108c | 1228 | |
c906108c | 1229 | struct symtab_and_line |
17c5ed2c | 1230 | { |
6c95b8df PA |
1231 | /* The program space of this sal. */ |
1232 | struct program_space *pspace; | |
1233 | ||
17c5ed2c | 1234 | struct symtab *symtab; |
714835d5 | 1235 | struct obj_section *section; |
17c5ed2c DC |
1236 | /* Line number. Line numbers start at 1 and proceed through symtab->nlines. |
1237 | 0 is never a valid line number; it is used to indicate that line number | |
1238 | information is not available. */ | |
1239 | int line; | |
1240 | ||
1241 | CORE_ADDR pc; | |
1242 | CORE_ADDR end; | |
ed0616c6 VP |
1243 | int explicit_pc; |
1244 | int explicit_line; | |
55aa24fb SDJ |
1245 | |
1246 | /* The probe associated with this symtab_and_line. */ | |
1247 | struct probe *probe; | |
729662a5 TT |
1248 | /* If PROBE is not NULL, then this is the objfile in which the probe |
1249 | originated. */ | |
1250 | struct objfile *objfile; | |
17c5ed2c | 1251 | }; |
c906108c | 1252 | |
fe39c653 | 1253 | extern void init_sal (struct symtab_and_line *sal); |
c906108c SS |
1254 | |
1255 | struct symtabs_and_lines | |
17c5ed2c DC |
1256 | { |
1257 | struct symtab_and_line *sals; | |
1258 | int nelts; | |
1259 | }; | |
c5aa993b | 1260 | \f |
c906108c | 1261 | |
c906108c SS |
1262 | /* Given a pc value, return line number it is in. Second arg nonzero means |
1263 | if pc is on the boundary use the previous statement's line number. */ | |
1264 | ||
a14ed312 | 1265 | extern struct symtab_and_line find_pc_line (CORE_ADDR, int); |
c906108c | 1266 | |
c378eb4e | 1267 | /* Same function, but specify a section as well as an address. */ |
c906108c | 1268 | |
714835d5 UW |
1269 | extern struct symtab_and_line find_pc_sect_line (CORE_ADDR, |
1270 | struct obj_section *, int); | |
c906108c | 1271 | |
c906108c SS |
1272 | /* Given a symtab and line number, return the pc there. */ |
1273 | ||
a14ed312 | 1274 | extern int find_line_pc (struct symtab *, int, CORE_ADDR *); |
c906108c | 1275 | |
570b8f7c AC |
1276 | extern int find_line_pc_range (struct symtab_and_line, CORE_ADDR *, |
1277 | CORE_ADDR *); | |
c906108c | 1278 | |
a14ed312 | 1279 | extern void resolve_sal_pc (struct symtab_and_line *); |
c906108c | 1280 | |
c906108c SS |
1281 | /* Symbol-reading stuff in symfile.c and solib.c. */ |
1282 | ||
a14ed312 | 1283 | extern void clear_solib (void); |
c906108c | 1284 | |
c906108c SS |
1285 | /* source.c */ |
1286 | ||
a14ed312 | 1287 | extern int identify_source_line (struct symtab *, int, int, CORE_ADDR); |
c906108c | 1288 | |
dfaae886 MM |
1289 | /* Flags passed as 4th argument to print_source_lines. */ |
1290 | ||
1291 | enum print_source_lines_flags | |
1292 | { | |
1293 | /* Do not print an error message. */ | |
4cd29721 MM |
1294 | PRINT_SOURCE_LINES_NOERROR = (1 << 0), |
1295 | ||
1296 | /* Print the filename in front of the source lines. */ | |
1297 | PRINT_SOURCE_LINES_FILENAME = (1 << 1) | |
dfaae886 MM |
1298 | }; |
1299 | ||
1300 | extern void print_source_lines (struct symtab *, int, int, | |
1301 | enum print_source_lines_flags); | |
c906108c | 1302 | |
00174a86 | 1303 | extern void forget_cached_source_info_for_objfile (struct objfile *); |
a14ed312 | 1304 | extern void forget_cached_source_info (void); |
c906108c | 1305 | |
a14ed312 | 1306 | extern void select_source_symtab (struct symtab *); |
c906108c | 1307 | |
49c4e619 | 1308 | extern VEC (char_ptr) *default_make_symbol_completion_list_break_on |
6f937416 | 1309 | (const char *text, const char *word, const char *break_on, |
2f68a895 | 1310 | enum type_code code); |
6f937416 PA |
1311 | extern VEC (char_ptr) *default_make_symbol_completion_list (const char *, |
1312 | const char *, | |
2f68a895 | 1313 | enum type_code); |
6f937416 PA |
1314 | extern VEC (char_ptr) *make_symbol_completion_list (const char *, const char *); |
1315 | extern VEC (char_ptr) *make_symbol_completion_type (const char *, const char *, | |
2f68a895 | 1316 | enum type_code); |
49c4e619 | 1317 | extern VEC (char_ptr) *make_symbol_completion_list_fn (struct cmd_list_element *, |
6f937416 PA |
1318 | const char *, |
1319 | const char *); | |
c906108c | 1320 | |
6f937416 PA |
1321 | extern VEC (char_ptr) *make_file_symbol_completion_list (const char *, |
1322 | const char *, | |
1323 | const char *); | |
c94fdfd0 | 1324 | |
6f937416 PA |
1325 | extern VEC (char_ptr) *make_source_files_completion_list (const char *, |
1326 | const char *); | |
c94fdfd0 | 1327 | |
c906108c SS |
1328 | /* symtab.c */ |
1329 | ||
714835d5 | 1330 | int matching_obj_sections (struct obj_section *, struct obj_section *); |
94277a38 | 1331 | |
50641945 FN |
1332 | extern struct symtab *find_line_symtab (struct symtab *, int, int *, int *); |
1333 | ||
17c5ed2c DC |
1334 | extern struct symtab_and_line find_function_start_sal (struct symbol *sym, |
1335 | int); | |
50641945 | 1336 | |
059acae7 UW |
1337 | extern void skip_prologue_sal (struct symtab_and_line *); |
1338 | ||
c906108c SS |
1339 | /* symfile.c */ |
1340 | ||
c1e56572 | 1341 | extern void clear_symtab_users (int add_flags); |
c906108c | 1342 | |
dd786858 | 1343 | extern enum language deduce_language_from_filename (const char *); |
c906108c SS |
1344 | |
1345 | /* symtab.c */ | |
1346 | ||
d80b854b UW |
1347 | extern int in_prologue (struct gdbarch *gdbarch, |
1348 | CORE_ADDR pc, CORE_ADDR func_start); | |
c906108c | 1349 | |
d80b854b UW |
1350 | extern CORE_ADDR skip_prologue_using_sal (struct gdbarch *gdbarch, |
1351 | CORE_ADDR func_addr); | |
634aa483 | 1352 | |
a14ed312 KB |
1353 | extern struct symbol *fixup_symbol_section (struct symbol *, |
1354 | struct objfile *); | |
c906108c SS |
1355 | |
1356 | /* Symbol searching */ | |
5c04624b DE |
1357 | /* Note: struct symbol_search, search_symbols, et.al. are declared here, |
1358 | instead of making them local to symtab.c, for gdbtk's sake. */ | |
c906108c SS |
1359 | |
1360 | /* When using search_symbols, a list of the following structs is returned. | |
c378eb4e | 1361 | Callers must free the search list using free_search_symbols! */ |
c906108c | 1362 | struct symbol_search |
17c5ed2c | 1363 | { |
c378eb4e MS |
1364 | /* The block in which the match was found. Could be, for example, |
1365 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
17c5ed2c | 1366 | int block; |
c906108c | 1367 | |
17c5ed2c | 1368 | /* Information describing what was found. |
c906108c | 1369 | |
b52109bc | 1370 | If symtab and symbol are NOT NULL, then information was found |
c378eb4e | 1371 | for this match. */ |
17c5ed2c DC |
1372 | struct symtab *symtab; |
1373 | struct symbol *symbol; | |
c906108c | 1374 | |
17c5ed2c | 1375 | /* If msymbol is non-null, then a match was made on something for |
c378eb4e | 1376 | which only minimal_symbols exist. */ |
7c7b6655 | 1377 | struct bound_minimal_symbol msymbol; |
c906108c | 1378 | |
c378eb4e | 1379 | /* A link to the next match, or NULL for the end. */ |
17c5ed2c DC |
1380 | struct symbol_search *next; |
1381 | }; | |
c906108c | 1382 | |
96142726 TT |
1383 | extern void search_symbols (const char *, enum search_domain, int, |
1384 | const char **, struct symbol_search **); | |
a14ed312 | 1385 | extern void free_search_symbols (struct symbol_search *); |
17c5ed2c | 1386 | extern struct cleanup *make_cleanup_free_search_symbols (struct symbol_search |
b52109bc | 1387 | **); |
c906108c | 1388 | |
51cc5b07 AC |
1389 | /* The name of the ``main'' function. |
1390 | FIXME: cagney/2001-03-20: Can't make main_name() const since some | |
1391 | of the calling code currently assumes that the string isn't | |
c378eb4e | 1392 | const. */ |
17c5ed2c | 1393 | extern /*const */ char *main_name (void); |
9e6c82ad | 1394 | extern enum language main_language (void); |
51cc5b07 | 1395 | |
cf901d3b DE |
1396 | /* Lookup symbol NAME from DOMAIN in MAIN_OBJFILE's global blocks. |
1397 | This searches MAIN_OBJFILE as well as any associated separate debug info | |
1398 | objfiles of MAIN_OBJFILE. | |
1399 | Upon success sets BLOCK_FOUND and fixes up the symbol's section | |
1400 | if necessary. */ | |
1401 | ||
1402 | extern struct symbol * | |
1403 | lookup_global_symbol_from_objfile (const struct objfile *main_objfile, | |
1404 | const char *name, | |
1405 | const domain_enum domain); | |
3a40aaa0 | 1406 | |
a6c727b2 DJ |
1407 | /* Return 1 if the supplied producer string matches the ARM RealView |
1408 | compiler (armcc). */ | |
1409 | int producer_is_realview (const char *producer); | |
3a40aaa0 | 1410 | |
ccefe4c4 TT |
1411 | void fixup_section (struct general_symbol_info *ginfo, |
1412 | CORE_ADDR addr, struct objfile *objfile); | |
1413 | ||
cf901d3b DE |
1414 | /* Look up objfile containing BLOCK. */ |
1415 | ||
c0201579 JK |
1416 | struct objfile *lookup_objfile_from_block (const struct block *block); |
1417 | ||
db0fec5c | 1418 | extern unsigned int symtab_create_debug; |
45cfd468 | 1419 | |
c011a4f4 DE |
1420 | extern int basenames_may_differ; |
1421 | ||
4aac40c8 | 1422 | int compare_filenames_for_search (const char *filename, |
b57a636e | 1423 | const char *search_name); |
4aac40c8 | 1424 | |
f8eba3c6 | 1425 | int iterate_over_some_symtabs (const char *name, |
f8eba3c6 TT |
1426 | const char *real_path, |
1427 | int (*callback) (struct symtab *symtab, | |
1428 | void *data), | |
1429 | void *data, | |
1430 | struct symtab *first, | |
1431 | struct symtab *after_last); | |
1432 | ||
1433 | void iterate_over_symtabs (const char *name, | |
1434 | int (*callback) (struct symtab *symtab, | |
1435 | void *data), | |
1436 | void *data); | |
1437 | ||
1438 | DEF_VEC_I (CORE_ADDR); | |
1439 | ||
1440 | VEC (CORE_ADDR) *find_pcs_for_symtab_line (struct symtab *symtab, int line, | |
1441 | struct linetable_entry **best_entry); | |
1442 | ||
8e704927 GB |
1443 | /* Callback for LA_ITERATE_OVER_SYMBOLS. The callback will be called |
1444 | once per matching symbol SYM, with DATA being the argument of the | |
1445 | same name that was passed to LA_ITERATE_OVER_SYMBOLS. The callback | |
1446 | should return nonzero to indicate that LA_ITERATE_OVER_SYMBOLS | |
1447 | should continue iterating, or zero to indicate that the iteration | |
1448 | should end. */ | |
1449 | ||
1450 | typedef int (symbol_found_callback_ftype) (struct symbol *sym, void *data); | |
1451 | ||
f8eba3c6 TT |
1452 | void iterate_over_symbols (const struct block *block, const char *name, |
1453 | const domain_enum domain, | |
8e704927 | 1454 | symbol_found_callback_ftype *callback, |
f8eba3c6 TT |
1455 | void *data); |
1456 | ||
1457 | struct cleanup *demangle_for_lookup (const char *name, enum language lang, | |
1458 | const char **result_name); | |
1459 | ||
e623cf5d TT |
1460 | struct symbol *allocate_symbol (struct objfile *); |
1461 | ||
1462 | void initialize_symbol (struct symbol *); | |
1463 | ||
1464 | struct template_symbol *allocate_template_symbol (struct objfile *); | |
1465 | ||
c906108c | 1466 | #endif /* !defined(SYMTAB_H) */ |