Commit | Line | Data |
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c906108c | 1 | /* Symbol table definitions for GDB. |
1bac305b | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
4c38e0a4 | 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010 |
6aba47ca | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #if !defined (SYMTAB_H) | |
23 | #define SYMTAB_H 1 | |
24 | ||
5f8a3188 | 25 | /* Opaque declarations. */ |
da3331ec AC |
26 | struct ui_file; |
27 | struct frame_info; | |
28 | struct symbol; | |
5f8a3188 | 29 | struct obstack; |
6a2f5abf | 30 | struct objfile; |
fe898f56 DC |
31 | struct block; |
32 | struct blockvector; | |
4c2df51b DJ |
33 | struct axs_value; |
34 | struct agent_expr; | |
6c95b8df | 35 | struct program_space; |
c906108c | 36 | |
a7f19c79 MC |
37 | /* Some of the structures in this file are space critical. |
38 | The space-critical structures are: | |
39 | ||
40 | struct general_symbol_info | |
41 | struct symbol | |
42 | struct partial_symbol | |
43 | ||
5bccb4d1 | 44 | These structures are laid out to encourage good packing. |
a7f19c79 MC |
45 | They use ENUM_BITFIELD and short int fields, and they order the |
46 | structure members so that fields less than a word are next | |
47 | to each other so they can be packed together. */ | |
48 | ||
49 | /* Rearranged: used ENUM_BITFIELD and rearranged field order in | |
50 | all the space critical structures (plus struct minimal_symbol). | |
51 | Memory usage dropped from 99360768 bytes to 90001408 bytes. | |
52 | I measured this with before-and-after tests of | |
53 | "HEAD-old-gdb -readnow HEAD-old-gdb" and | |
54 | "HEAD-new-gdb -readnow HEAD-old-gdb" on native i686-pc-linux-gnu, | |
55 | red hat linux 8, with LD_LIBRARY_PATH=/usr/lib/debug, | |
56 | typing "maint space 1" at the first command prompt. | |
57 | ||
58 | Here is another measurement (from andrew c): | |
59 | # no /usr/lib/debug, just plain glibc, like a normal user | |
60 | gdb HEAD-old-gdb | |
61 | (gdb) break internal_error | |
62 | (gdb) run | |
63 | (gdb) maint internal-error | |
64 | (gdb) backtrace | |
65 | (gdb) maint space 1 | |
66 | ||
67 | gdb gdb_6_0_branch 2003-08-19 space used: 8896512 | |
68 | gdb HEAD 2003-08-19 space used: 8904704 | |
69 | gdb HEAD 2003-08-21 space used: 8396800 (+symtab.h) | |
70 | gdb HEAD 2003-08-21 space used: 8265728 (+gdbtypes.h) | |
71 | ||
72 | The third line shows the savings from the optimizations in symtab.h. | |
73 | The fourth line shows the savings from the optimizations in | |
74 | gdbtypes.h. Both optimizations are in gdb HEAD now. | |
75 | ||
76 | --chastain 2003-08-21 */ | |
77 | ||
78 | ||
79 | ||
c906108c SS |
80 | /* Define a structure for the information that is common to all symbol types, |
81 | including minimal symbols, partial symbols, and full symbols. In a | |
82 | multilanguage environment, some language specific information may need to | |
a7f19c79 | 83 | be recorded along with each symbol. */ |
c906108c | 84 | |
a7f19c79 | 85 | /* This structure is space critical. See space comments at the top. */ |
c906108c SS |
86 | |
87 | struct general_symbol_info | |
17c5ed2c | 88 | { |
22abf04a | 89 | /* Name of the symbol. This is a required field. Storage for the |
4a146b47 EZ |
90 | name is allocated on the objfile_obstack for the associated |
91 | objfile. For languages like C++ that make a distinction between | |
92 | the mangled name and demangled name, this is the mangled | |
93 | name. */ | |
c906108c | 94 | |
17c5ed2c | 95 | char *name; |
c906108c | 96 | |
17c5ed2c DC |
97 | /* Value of the symbol. Which member of this union to use, and what |
98 | it means, depends on what kind of symbol this is and its | |
99 | SYMBOL_CLASS. See comments there for more details. All of these | |
100 | are in host byte order (though what they point to might be in | |
101 | target byte order, e.g. LOC_CONST_BYTES). */ | |
c906108c | 102 | |
17c5ed2c DC |
103 | union |
104 | { | |
105 | /* The fact that this is a long not a LONGEST mainly limits the | |
106 | range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not | |
107 | sure that is a big deal. */ | |
108 | long ivalue; | |
c906108c | 109 | |
17c5ed2c | 110 | struct block *block; |
c906108c | 111 | |
4e38b386 | 112 | gdb_byte *bytes; |
c906108c | 113 | |
17c5ed2c | 114 | CORE_ADDR address; |
c906108c | 115 | |
17c5ed2c | 116 | /* for opaque typedef struct chain */ |
c906108c | 117 | |
17c5ed2c DC |
118 | struct symbol *chain; |
119 | } | |
120 | value; | |
c906108c | 121 | |
17c5ed2c DC |
122 | /* Since one and only one language can apply, wrap the language specific |
123 | information inside a union. */ | |
c906108c | 124 | |
17c5ed2c DC |
125 | union |
126 | { | |
afa16725 SW |
127 | /* This is used by languages which wish to store a demangled name. |
128 | currently used by Ada, Java, and Objective C.*/ | |
129 | struct mangled_lang | |
17c5ed2c DC |
130 | { |
131 | char *demangled_name; | |
132 | } | |
afa16725 | 133 | mangled_lang; |
17c5ed2c DC |
134 | } |
135 | language_specific; | |
c5aa993b | 136 | |
17c5ed2c DC |
137 | /* Record the source code language that applies to this symbol. |
138 | This is used to select one of the fields from the language specific | |
139 | union above. */ | |
c5aa993b | 140 | |
87193939 | 141 | ENUM_BITFIELD(language) language : 8; |
c5aa993b | 142 | |
17c5ed2c DC |
143 | /* Which section is this symbol in? This is an index into |
144 | section_offsets for this objfile. Negative means that the symbol | |
145 | does not get relocated relative to a section. | |
146 | Disclaimer: currently this is just used for xcoff, so don't | |
147 | expect all symbol-reading code to set it correctly (the ELF code | |
148 | also tries to set it correctly). */ | |
c5aa993b | 149 | |
17c5ed2c | 150 | short section; |
c5aa993b | 151 | |
c0201579 | 152 | /* The section associated with this symbol. It can be NULL. */ |
c5aa993b | 153 | |
714835d5 | 154 | struct obj_section *obj_section; |
17c5ed2c | 155 | }; |
c906108c | 156 | |
b250c185 SW |
157 | extern void symbol_set_demangled_name (struct general_symbol_info *, char *); |
158 | ||
159 | extern char *symbol_get_demangled_name (const struct general_symbol_info *); | |
160 | ||
714835d5 | 161 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); |
c906108c | 162 | |
88cda038 EZ |
163 | /* Note that all the following SYMBOL_* macros are used with the |
164 | SYMBOL argument being either a partial symbol, a minimal symbol or | |
165 | a full symbol. All three types have a ginfo field. In particular | |
d6350901 DJ |
166 | the SYMBOL_INIT_LANGUAGE_SPECIFIC, SYMBOL_DEMANGLED_NAME, etc. |
167 | macros cannot be entirely substituted by | |
88cda038 EZ |
168 | functions, unless the callers are changed to pass in the ginfo |
169 | field only, instead of the SYMBOL parameter. */ | |
170 | ||
c906108c SS |
171 | #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue |
172 | #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address | |
173 | #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes | |
174 | #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block | |
175 | #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain | |
176 | #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language | |
177 | #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section | |
714835d5 | 178 | #define SYMBOL_OBJ_SECTION(symbol) (symbol)->ginfo.obj_section |
c906108c | 179 | |
89aad1f9 | 180 | /* Initializes the language dependent portion of a symbol |
c906108c | 181 | depending upon the language for the symbol. */ |
89aad1f9 EZ |
182 | #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \ |
183 | (symbol_init_language_specific (&(symbol)->ginfo, (language))) | |
184 | extern void symbol_init_language_specific (struct general_symbol_info *symbol, | |
185 | enum language language); | |
c906108c | 186 | |
3567439c DJ |
187 | /* Set just the linkage name of a symbol; do not try to demangle |
188 | it. Used for constructs which do not have a mangled name, | |
189 | e.g. struct tags. Unlike SYMBOL_SET_NAMES, linkage_name must | |
1c9e8358 TT |
190 | be terminated and either already on the objfile's obstack or |
191 | permanently allocated. */ | |
3567439c DJ |
192 | #define SYMBOL_SET_LINKAGE_NAME(symbol,linkage_name) \ |
193 | (symbol)->ginfo.name = (linkage_name) | |
194 | ||
195 | /* Set the linkage and natural names of a symbol, by demangling | |
196 | the linkage name. */ | |
04a679b8 TT |
197 | #define SYMBOL_SET_NAMES(symbol,linkage_name,len,copy_name,objfile) \ |
198 | symbol_set_names (&(symbol)->ginfo, linkage_name, len, copy_name, objfile) | |
2de7ced7 | 199 | extern void symbol_set_names (struct general_symbol_info *symbol, |
04a679b8 | 200 | const char *linkage_name, int len, int copy_name, |
2de7ced7 DJ |
201 | struct objfile *objfile); |
202 | ||
22abf04a DC |
203 | /* Now come lots of name accessor macros. Short version as to when to |
204 | use which: Use SYMBOL_NATURAL_NAME to refer to the name of the | |
205 | symbol in the original source code. Use SYMBOL_LINKAGE_NAME if you | |
206 | want to know what the linker thinks the symbol's name is. Use | |
207 | SYMBOL_PRINT_NAME for output. Use SYMBOL_DEMANGLED_NAME if you | |
208 | specifically need to know whether SYMBOL_NATURAL_NAME and | |
3567439c | 209 | SYMBOL_LINKAGE_NAME are different. */ |
22abf04a DC |
210 | |
211 | /* Return SYMBOL's "natural" name, i.e. the name that it was called in | |
212 | the original source code. In languages like C++ where symbols may | |
213 | be mangled for ease of manipulation by the linker, this is the | |
214 | demangled name. */ | |
215 | ||
216 | #define SYMBOL_NATURAL_NAME(symbol) \ | |
217 | (symbol_natural_name (&(symbol)->ginfo)) | |
218 | extern char *symbol_natural_name (const struct general_symbol_info *symbol); | |
219 | ||
220 | /* Return SYMBOL's name from the point of view of the linker. In | |
221 | languages like C++ where symbols may be mangled for ease of | |
222 | manipulation by the linker, this is the mangled name; otherwise, | |
3567439c | 223 | it's the same as SYMBOL_NATURAL_NAME. */ |
22abf04a DC |
224 | |
225 | #define SYMBOL_LINKAGE_NAME(symbol) (symbol)->ginfo.name | |
226 | ||
9cc0d196 EZ |
227 | /* Return the demangled name for a symbol based on the language for |
228 | that symbol. If no demangled name exists, return NULL. */ | |
229 | #define SYMBOL_DEMANGLED_NAME(symbol) \ | |
230 | (symbol_demangled_name (&(symbol)->ginfo)) | |
df8a16a1 | 231 | extern char *symbol_demangled_name (const struct general_symbol_info *symbol); |
c906108c | 232 | |
de5ad195 DC |
233 | /* Macro that returns a version of the name of a symbol that is |
234 | suitable for output. In C++ this is the "demangled" form of the | |
235 | name if demangle is on and the "mangled" form of the name if | |
236 | demangle is off. In other languages this is just the symbol name. | |
237 | The result should never be NULL. Don't use this for internal | |
238 | purposes (e.g. storing in a hashtable): it's only suitable for | |
239 | output. */ | |
240 | ||
241 | #define SYMBOL_PRINT_NAME(symbol) \ | |
22abf04a | 242 | (demangle ? SYMBOL_NATURAL_NAME (symbol) : SYMBOL_LINKAGE_NAME (symbol)) |
c906108c | 243 | |
c906108c SS |
244 | /* Macro that tests a symbol for a match against a specified name string. |
245 | First test the unencoded name, then looks for and test a C++ encoded | |
246 | name if it exists. Note that whitespace is ignored while attempting to | |
247 | match a C++ encoded name, so that "foo::bar(int,long)" is the same as | |
248 | "foo :: bar (int, long)". | |
249 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
250 | ||
8e437497 DC |
251 | /* Macro that tests a symbol for a match against a specified name |
252 | string. It tests against SYMBOL_NATURAL_NAME, and it ignores | |
253 | whitespace and trailing parentheses. (See strcmp_iw for details | |
254 | about its behavior.) */ | |
255 | ||
256 | #define SYMBOL_MATCHES_NATURAL_NAME(symbol, name) \ | |
257 | (strcmp_iw (SYMBOL_NATURAL_NAME (symbol), (name)) == 0) | |
258 | ||
4725b721 PH |
259 | /* Macro that returns the name to be used when sorting and searching symbols. |
260 | In C++, Chill, and Java, we search for the demangled form of a name, | |
261 | and so sort symbols accordingly. In Ada, however, we search by mangled | |
262 | name. If there is no distinct demangled name, then SYMBOL_SEARCH_NAME | |
263 | returns the same value (same pointer) as SYMBOL_LINKAGE_NAME. */ | |
264 | #define SYMBOL_SEARCH_NAME(symbol) \ | |
265 | (symbol_search_name (&(symbol)->ginfo)) | |
266 | extern char *symbol_search_name (const struct general_symbol_info *); | |
267 | ||
268 | /* Analogous to SYMBOL_MATCHES_NATURAL_NAME, but uses the search | |
269 | name. */ | |
270 | #define SYMBOL_MATCHES_SEARCH_NAME(symbol, name) \ | |
271 | (strcmp_iw (SYMBOL_SEARCH_NAME (symbol), (name)) == 0) | |
272 | ||
87193939 MC |
273 | /* Classification types for a minimal symbol. These should be taken as |
274 | "advisory only", since if gdb can't easily figure out a | |
275 | classification it simply selects mst_unknown. It may also have to | |
276 | guess when it can't figure out which is a better match between two | |
277 | types (mst_data versus mst_bss) for example. Since the minimal | |
278 | symbol info is sometimes derived from the BFD library's view of a | |
279 | file, we need to live with what information bfd supplies. */ | |
280 | ||
281 | enum minimal_symbol_type | |
282 | { | |
283 | mst_unknown = 0, /* Unknown type, the default */ | |
284 | mst_text, /* Generally executable instructions */ | |
285 | mst_data, /* Generally initialized data */ | |
286 | mst_bss, /* Generally uninitialized data */ | |
287 | mst_abs, /* Generally absolute (nonrelocatable) */ | |
288 | /* GDB uses mst_solib_trampoline for the start address of a shared | |
289 | library trampoline entry. Breakpoints for shared library functions | |
290 | are put there if the shared library is not yet loaded. | |
291 | After the shared library is loaded, lookup_minimal_symbol will | |
292 | prefer the minimal symbol from the shared library (usually | |
293 | a mst_text symbol) over the mst_solib_trampoline symbol, and the | |
294 | breakpoints will be moved to their true address in the shared | |
295 | library via breakpoint_re_set. */ | |
296 | mst_solib_trampoline, /* Shared library trampoline code */ | |
297 | /* For the mst_file* types, the names are only guaranteed to be unique | |
298 | within a given .o file. */ | |
299 | mst_file_text, /* Static version of mst_text */ | |
300 | mst_file_data, /* Static version of mst_data */ | |
301 | mst_file_bss /* Static version of mst_bss */ | |
302 | }; | |
303 | ||
c906108c SS |
304 | /* Define a simple structure used to hold some very basic information about |
305 | all defined global symbols (text, data, bss, abs, etc). The only required | |
306 | information is the general_symbol_info. | |
307 | ||
308 | In many cases, even if a file was compiled with no special options for | |
309 | debugging at all, as long as was not stripped it will contain sufficient | |
310 | information to build a useful minimal symbol table using this structure. | |
311 | Even when a file contains enough debugging information to build a full | |
312 | symbol table, these minimal symbols are still useful for quickly mapping | |
313 | between names and addresses, and vice versa. They are also sometimes | |
314 | used to figure out what full symbol table entries need to be read in. */ | |
315 | ||
316 | struct minimal_symbol | |
17c5ed2c | 317 | { |
c906108c | 318 | |
17c5ed2c | 319 | /* The general symbol info required for all types of symbols. |
c906108c | 320 | |
17c5ed2c DC |
321 | The SYMBOL_VALUE_ADDRESS contains the address that this symbol |
322 | corresponds to. */ | |
c906108c | 323 | |
17c5ed2c | 324 | struct general_symbol_info ginfo; |
c906108c | 325 | |
f594e5e9 MC |
326 | /* Size of this symbol. end_psymtab in dbxread.c uses this |
327 | information to calculate the end of the partial symtab based on the | |
328 | address of the last symbol plus the size of the last symbol. */ | |
329 | ||
330 | unsigned long size; | |
331 | ||
17c5ed2c DC |
332 | /* Which source file is this symbol in? Only relevant for mst_file_*. */ |
333 | char *filename; | |
c906108c | 334 | |
87193939 | 335 | /* Classification type for this minimal symbol. */ |
17c5ed2c | 336 | |
87193939 | 337 | ENUM_BITFIELD(minimal_symbol_type) type : 8; |
17c5ed2c | 338 | |
b887350f TT |
339 | /* Two flag bits provided for the use of the target. */ |
340 | unsigned int target_flag_1 : 1; | |
341 | unsigned int target_flag_2 : 1; | |
342 | ||
17c5ed2c DC |
343 | /* Minimal symbols with the same hash key are kept on a linked |
344 | list. This is the link. */ | |
345 | ||
346 | struct minimal_symbol *hash_next; | |
347 | ||
348 | /* Minimal symbols are stored in two different hash tables. This is | |
349 | the `next' pointer for the demangled hash table. */ | |
350 | ||
351 | struct minimal_symbol *demangled_hash_next; | |
352 | }; | |
c906108c | 353 | |
b887350f TT |
354 | #define MSYMBOL_TARGET_FLAG_1(msymbol) (msymbol)->target_flag_1 |
355 | #define MSYMBOL_TARGET_FLAG_2(msymbol) (msymbol)->target_flag_2 | |
f594e5e9 | 356 | #define MSYMBOL_SIZE(msymbol) (msymbol)->size |
c906108c | 357 | #define MSYMBOL_TYPE(msymbol) (msymbol)->type |
c906108c | 358 | |
c906108c | 359 | \f |
c5aa993b | 360 | |
c906108c SS |
361 | /* Represent one symbol name; a variable, constant, function or typedef. */ |
362 | ||
176620f1 EZ |
363 | /* Different name domains for symbols. Looking up a symbol specifies a |
364 | domain and ignores symbol definitions in other name domains. */ | |
c906108c | 365 | |
87193939 | 366 | typedef enum domain_enum_tag |
17c5ed2c | 367 | { |
176620f1 | 368 | /* UNDEF_DOMAIN is used when a domain has not been discovered or |
17c5ed2c DC |
369 | none of the following apply. This usually indicates an error either |
370 | in the symbol information or in gdb's handling of symbols. */ | |
c906108c | 371 | |
176620f1 | 372 | UNDEF_DOMAIN, |
c906108c | 373 | |
176620f1 | 374 | /* VAR_DOMAIN is the usual domain. In C, this contains variables, |
17c5ed2c | 375 | function names, typedef names and enum type values. */ |
c906108c | 376 | |
176620f1 | 377 | VAR_DOMAIN, |
c906108c | 378 | |
176620f1 | 379 | /* STRUCT_DOMAIN is used in C to hold struct, union and enum type names. |
17c5ed2c | 380 | Thus, if `struct foo' is used in a C program, it produces a symbol named |
176620f1 | 381 | `foo' in the STRUCT_DOMAIN. */ |
c906108c | 382 | |
176620f1 | 383 | STRUCT_DOMAIN, |
c906108c | 384 | |
0f5238ed | 385 | /* LABEL_DOMAIN may be used for names of labels (for gotos). */ |
c906108c | 386 | |
176620f1 | 387 | LABEL_DOMAIN, |
c906108c | 388 | |
176620f1 | 389 | /* Searching domains. These overlap with VAR_DOMAIN, providing |
17c5ed2c | 390 | some granularity with the search_symbols function. */ |
c906108c | 391 | |
bd2e94ce TT |
392 | /* Everything in VAR_DOMAIN minus FUNCTIONS_DOMAIN and |
393 | TYPES_DOMAIN. */ | |
176620f1 | 394 | VARIABLES_DOMAIN, |
c906108c | 395 | |
17c5ed2c | 396 | /* All functions -- for some reason not methods, though. */ |
176620f1 | 397 | FUNCTIONS_DOMAIN, |
c906108c | 398 | |
17c5ed2c | 399 | /* All defined types */ |
bd2e94ce | 400 | TYPES_DOMAIN |
17c5ed2c | 401 | } |
176620f1 | 402 | domain_enum; |
c906108c SS |
403 | |
404 | /* An address-class says where to find the value of a symbol. */ | |
405 | ||
406 | enum address_class | |
17c5ed2c DC |
407 | { |
408 | /* Not used; catches errors */ | |
c5aa993b | 409 | |
17c5ed2c | 410 | LOC_UNDEF, |
c906108c | 411 | |
17c5ed2c | 412 | /* Value is constant int SYMBOL_VALUE, host byteorder */ |
c906108c | 413 | |
17c5ed2c | 414 | LOC_CONST, |
c906108c | 415 | |
17c5ed2c | 416 | /* Value is at fixed address SYMBOL_VALUE_ADDRESS */ |
c906108c | 417 | |
17c5ed2c | 418 | LOC_STATIC, |
c906108c | 419 | |
768a979c UW |
420 | /* Value is in register. SYMBOL_VALUE is the register number |
421 | in the original debug format. SYMBOL_REGISTER_OPS holds a | |
422 | function that can be called to transform this into the | |
423 | actual register number this represents in a specific target | |
424 | architecture (gdbarch). | |
2a2d4dc3 AS |
425 | |
426 | For some symbol formats (stabs, for some compilers at least), | |
427 | the compiler generates two symbols, an argument and a register. | |
428 | In some cases we combine them to a single LOC_REGISTER in symbol | |
429 | reading, but currently not for all cases (e.g. it's passed on the | |
430 | stack and then loaded into a register). */ | |
c906108c | 431 | |
17c5ed2c | 432 | LOC_REGISTER, |
c906108c | 433 | |
17c5ed2c | 434 | /* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */ |
c906108c | 435 | |
17c5ed2c | 436 | LOC_ARG, |
c906108c | 437 | |
17c5ed2c | 438 | /* Value address is at SYMBOL_VALUE offset in arglist. */ |
c906108c | 439 | |
17c5ed2c | 440 | LOC_REF_ARG, |
c906108c | 441 | |
2a2d4dc3 | 442 | /* Value is in specified register. Just like LOC_REGISTER except the |
17c5ed2c DC |
443 | register holds the address of the argument instead of the argument |
444 | itself. This is currently used for the passing of structs and unions | |
445 | on sparc and hppa. It is also used for call by reference where the | |
446 | address is in a register, at least by mipsread.c. */ | |
c906108c | 447 | |
17c5ed2c | 448 | LOC_REGPARM_ADDR, |
c906108c | 449 | |
17c5ed2c | 450 | /* Value is a local variable at SYMBOL_VALUE offset in stack frame. */ |
c906108c | 451 | |
17c5ed2c | 452 | LOC_LOCAL, |
c906108c | 453 | |
176620f1 EZ |
454 | /* Value not used; definition in SYMBOL_TYPE. Symbols in the domain |
455 | STRUCT_DOMAIN all have this class. */ | |
c906108c | 456 | |
17c5ed2c | 457 | LOC_TYPEDEF, |
c906108c | 458 | |
17c5ed2c | 459 | /* Value is address SYMBOL_VALUE_ADDRESS in the code */ |
c906108c | 460 | |
17c5ed2c | 461 | LOC_LABEL, |
c906108c | 462 | |
17c5ed2c DC |
463 | /* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'. |
464 | In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address | |
465 | of the block. Function names have this class. */ | |
c906108c | 466 | |
17c5ed2c | 467 | LOC_BLOCK, |
c906108c | 468 | |
17c5ed2c DC |
469 | /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in |
470 | target byte order. */ | |
c906108c | 471 | |
17c5ed2c | 472 | LOC_CONST_BYTES, |
c906108c | 473 | |
17c5ed2c DC |
474 | /* Value is at fixed address, but the address of the variable has |
475 | to be determined from the minimal symbol table whenever the | |
476 | variable is referenced. | |
477 | This happens if debugging information for a global symbol is | |
478 | emitted and the corresponding minimal symbol is defined | |
479 | in another object file or runtime common storage. | |
480 | The linker might even remove the minimal symbol if the global | |
481 | symbol is never referenced, in which case the symbol remains | |
de40b933 JK |
482 | unresolved. |
483 | ||
484 | GDB would normally find the symbol in the minimal symbol table if it will | |
485 | not find it in the full symbol table. But a reference to an external | |
486 | symbol in a local block shadowing other definition requires full symbol | |
487 | without possibly having its address available for LOC_STATIC. Testcase | |
488 | is provided as `gdb.dwarf2/dw2-unresolved.exp'. */ | |
c906108c | 489 | |
17c5ed2c | 490 | LOC_UNRESOLVED, |
c906108c | 491 | |
17c5ed2c DC |
492 | /* The variable does not actually exist in the program. |
493 | The value is ignored. */ | |
c906108c | 494 | |
17c5ed2c | 495 | LOC_OPTIMIZED_OUT, |
c906108c | 496 | |
4c2df51b | 497 | /* The variable's address is computed by a set of location |
768a979c | 498 | functions (see "struct symbol_computed_ops" below). */ |
4c2df51b | 499 | LOC_COMPUTED, |
4c2df51b DJ |
500 | }; |
501 | ||
768a979c | 502 | /* The methods needed to implement LOC_COMPUTED. These methods can |
a67af2b9 AC |
503 | use the symbol's .aux_value for additional per-symbol information. |
504 | ||
505 | At present this is only used to implement location expressions. */ | |
506 | ||
768a979c | 507 | struct symbol_computed_ops |
4c2df51b DJ |
508 | { |
509 | ||
510 | /* Return the value of the variable SYMBOL, relative to the stack | |
511 | frame FRAME. If the variable has been optimized out, return | |
512 | zero. | |
513 | ||
514 | Iff `read_needs_frame (SYMBOL)' is zero, then FRAME may be zero. */ | |
515 | ||
516 | struct value *(*read_variable) (struct symbol * symbol, | |
517 | struct frame_info * frame); | |
518 | ||
519 | /* Return non-zero if we need a frame to find the value of the SYMBOL. */ | |
520 | int (*read_needs_frame) (struct symbol * symbol); | |
521 | ||
522 | /* Write to STREAM a natural-language description of the location of | |
08922a10 SS |
523 | SYMBOL, in the context of ADDR. */ |
524 | void (*describe_location) (struct symbol * symbol, CORE_ADDR addr, | |
525 | struct ui_file * stream); | |
4c2df51b DJ |
526 | |
527 | /* Tracepoint support. Append bytecodes to the tracepoint agent | |
528 | expression AX that push the address of the object SYMBOL. Set | |
529 | VALUE appropriately. Note --- for objects in registers, this | |
530 | needn't emit any code; as long as it sets VALUE properly, then | |
531 | the caller will generate the right code in the process of | |
532 | treating this as an lvalue or rvalue. */ | |
533 | ||
505e835d UW |
534 | void (*tracepoint_var_ref) (struct symbol *symbol, struct gdbarch *gdbarch, |
535 | struct agent_expr *ax, struct axs_value *value); | |
17c5ed2c | 536 | }; |
c906108c | 537 | |
768a979c UW |
538 | /* Functions used with LOC_REGISTER and LOC_REGPARM_ADDR. */ |
539 | ||
540 | struct symbol_register_ops | |
541 | { | |
542 | int (*register_number) (struct symbol *symbol, struct gdbarch *gdbarch); | |
543 | }; | |
544 | ||
a7f19c79 MC |
545 | /* This structure is space critical. See space comments at the top. */ |
546 | ||
c906108c | 547 | struct symbol |
17c5ed2c | 548 | { |
c906108c | 549 | |
17c5ed2c | 550 | /* The general symbol info required for all types of symbols. */ |
c906108c | 551 | |
17c5ed2c | 552 | struct general_symbol_info ginfo; |
c906108c | 553 | |
17c5ed2c | 554 | /* Data type of value */ |
c906108c | 555 | |
17c5ed2c | 556 | struct type *type; |
c906108c | 557 | |
cb1df416 | 558 | /* The symbol table containing this symbol. This is the file |
cd55e50f JK |
559 | associated with LINE. It can be NULL during symbols read-in but it is |
560 | never NULL during normal operation. */ | |
cb1df416 DJ |
561 | struct symtab *symtab; |
562 | ||
176620f1 | 563 | /* Domain code. */ |
c906108c | 564 | |
87193939 | 565 | ENUM_BITFIELD(domain_enum_tag) domain : 6; |
c906108c | 566 | |
17c5ed2c | 567 | /* Address class */ |
a67af2b9 AC |
568 | /* NOTE: cagney/2003-11-02: The fields "aclass" and "ops" contain |
569 | overlapping information. By creating a per-aclass ops vector, or | |
570 | using the aclass as an index into an ops table, the aclass and | |
571 | ops fields can be merged. The latter, for instance, would shave | |
572 | 32-bits from each symbol (relative to a symbol lookup, any table | |
573 | index overhead would be in the noise). */ | |
c906108c | 574 | |
87193939 | 575 | ENUM_BITFIELD(address_class) aclass : 6; |
c906108c | 576 | |
2a2d4dc3 AS |
577 | /* Whether this is an argument. */ |
578 | ||
579 | unsigned is_argument : 1; | |
580 | ||
edb3359d DJ |
581 | /* Whether this is an inlined function (class LOC_BLOCK only). */ |
582 | unsigned is_inlined : 1; | |
583 | ||
584 | /* Line number of this symbol's definition, except for inlined | |
585 | functions. For an inlined function (class LOC_BLOCK and | |
586 | SYMBOL_INLINED set) this is the line number of the function's call | |
587 | site. Inlined function symbols are not definitions, and they are | |
588 | never found by symbol table lookup. | |
589 | ||
590 | FIXME: Should we really make the assumption that nobody will try | |
591 | to debug files longer than 64K lines? What about machine | |
592 | generated programs? */ | |
c906108c | 593 | |
17c5ed2c | 594 | unsigned short line; |
c906108c | 595 | |
a67af2b9 AC |
596 | /* Method's for symbol's of this class. */ |
597 | /* NOTE: cagney/2003-11-02: See comment above attached to "aclass". */ | |
598 | ||
768a979c UW |
599 | union |
600 | { | |
601 | /* Used with LOC_COMPUTED. */ | |
602 | const struct symbol_computed_ops *ops_computed; | |
603 | ||
604 | /* Used with LOC_REGISTER and LOC_REGPARM_ADDR. */ | |
605 | const struct symbol_register_ops *ops_register; | |
606 | } ops; | |
a67af2b9 | 607 | |
10f4ecb8 UW |
608 | /* An arbitrary data pointer, allowing symbol readers to record |
609 | additional information on a per-symbol basis. Note that this data | |
610 | must be allocated using the same obstack as the symbol itself. */ | |
2a2d4dc3 | 611 | /* So far it is only used by LOC_COMPUTED to |
10f4ecb8 UW |
612 | find the location information. For a LOC_BLOCK symbol |
613 | for a function in a compilation unit compiled with DWARF 2 | |
614 | information, this is information used internally by the DWARF 2 | |
615 | code --- specifically, the location expression for the frame | |
616 | base for this function. */ | |
617 | /* FIXME drow/2003-02-21: For the LOC_BLOCK case, it might be better | |
618 | to add a magic symbol to the block containing this information, | |
619 | or to have a generic debug info annotation slot for symbols. */ | |
620 | ||
621 | void *aux_value; | |
c906108c | 622 | |
17c5ed2c DC |
623 | struct symbol *hash_next; |
624 | }; | |
c906108c SS |
625 | |
626 | ||
176620f1 | 627 | #define SYMBOL_DOMAIN(symbol) (symbol)->domain |
c906108c | 628 | #define SYMBOL_CLASS(symbol) (symbol)->aclass |
2a2d4dc3 | 629 | #define SYMBOL_IS_ARGUMENT(symbol) (symbol)->is_argument |
edb3359d | 630 | #define SYMBOL_INLINED(symbol) (symbol)->is_inlined |
c906108c SS |
631 | #define SYMBOL_TYPE(symbol) (symbol)->type |
632 | #define SYMBOL_LINE(symbol) (symbol)->line | |
cb1df416 | 633 | #define SYMBOL_SYMTAB(symbol) (symbol)->symtab |
768a979c UW |
634 | #define SYMBOL_COMPUTED_OPS(symbol) (symbol)->ops.ops_computed |
635 | #define SYMBOL_REGISTER_OPS(symbol) (symbol)->ops.ops_register | |
10f4ecb8 | 636 | #define SYMBOL_LOCATION_BATON(symbol) (symbol)->aux_value |
c906108c | 637 | \f |
c906108c SS |
638 | /* Each item represents a line-->pc (or the reverse) mapping. This is |
639 | somewhat more wasteful of space than one might wish, but since only | |
640 | the files which are actually debugged are read in to core, we don't | |
641 | waste much space. */ | |
642 | ||
643 | struct linetable_entry | |
17c5ed2c DC |
644 | { |
645 | int line; | |
646 | CORE_ADDR pc; | |
647 | }; | |
c906108c SS |
648 | |
649 | /* The order of entries in the linetable is significant. They should | |
650 | be sorted by increasing values of the pc field. If there is more than | |
651 | one entry for a given pc, then I'm not sure what should happen (and | |
652 | I not sure whether we currently handle it the best way). | |
653 | ||
654 | Example: a C for statement generally looks like this | |
655 | ||
c5aa993b JM |
656 | 10 0x100 - for the init/test part of a for stmt. |
657 | 20 0x200 | |
658 | 30 0x300 | |
659 | 10 0x400 - for the increment part of a for stmt. | |
c906108c | 660 | |
e8717518 FF |
661 | If an entry has a line number of zero, it marks the start of a PC |
662 | range for which no line number information is available. It is | |
663 | acceptable, though wasteful of table space, for such a range to be | |
664 | zero length. */ | |
c906108c SS |
665 | |
666 | struct linetable | |
17c5ed2c DC |
667 | { |
668 | int nitems; | |
c906108c | 669 | |
17c5ed2c DC |
670 | /* Actually NITEMS elements. If you don't like this use of the |
671 | `struct hack', you can shove it up your ANSI (seriously, if the | |
672 | committee tells us how to do it, we can probably go along). */ | |
673 | struct linetable_entry item[1]; | |
674 | }; | |
c906108c | 675 | |
c906108c SS |
676 | /* How to relocate the symbols from each section in a symbol file. |
677 | Each struct contains an array of offsets. | |
678 | The ordering and meaning of the offsets is file-type-dependent; | |
679 | typically it is indexed by section numbers or symbol types or | |
680 | something like that. | |
681 | ||
682 | To give us flexibility in changing the internal representation | |
683 | of these offsets, the ANOFFSET macro must be used to insert and | |
684 | extract offset values in the struct. */ | |
685 | ||
686 | struct section_offsets | |
17c5ed2c DC |
687 | { |
688 | CORE_ADDR offsets[1]; /* As many as needed. */ | |
689 | }; | |
c906108c | 690 | |
a4c8257b | 691 | #define ANOFFSET(secoff, whichone) \ |
8e65ff28 | 692 | ((whichone == -1) \ |
e2e0b3e5 | 693 | ? (internal_error (__FILE__, __LINE__, _("Section index is uninitialized")), -1) \ |
8e65ff28 | 694 | : secoff->offsets[whichone]) |
c906108c | 695 | |
b29c9944 JB |
696 | /* The size of a section_offsets table for N sections. */ |
697 | #define SIZEOF_N_SECTION_OFFSETS(n) \ | |
c906108c | 698 | (sizeof (struct section_offsets) \ |
b29c9944 JB |
699 | + sizeof (((struct section_offsets *) 0)->offsets) * ((n)-1)) |
700 | ||
a960f249 | 701 | /* Each source file or header is represented by a struct symtab. |
c906108c SS |
702 | These objects are chained through the `next' field. */ |
703 | ||
704 | struct symtab | |
17c5ed2c | 705 | { |
c906108c | 706 | |
17c5ed2c | 707 | /* Chain of all existing symtabs. */ |
c906108c | 708 | |
17c5ed2c | 709 | struct symtab *next; |
c906108c | 710 | |
17c5ed2c DC |
711 | /* List of all symbol scope blocks for this symtab. May be shared |
712 | between different symtabs (and normally is for all the symtabs | |
713 | in a given compilation unit). */ | |
c906108c | 714 | |
17c5ed2c | 715 | struct blockvector *blockvector; |
c906108c | 716 | |
17c5ed2c DC |
717 | /* Table mapping core addresses to line numbers for this file. |
718 | Can be NULL if none. Never shared between different symtabs. */ | |
c906108c | 719 | |
17c5ed2c | 720 | struct linetable *linetable; |
c906108c | 721 | |
17c5ed2c DC |
722 | /* Section in objfile->section_offsets for the blockvector and |
723 | the linetable. Probably always SECT_OFF_TEXT. */ | |
c906108c | 724 | |
17c5ed2c | 725 | int block_line_section; |
c906108c | 726 | |
17c5ed2c DC |
727 | /* If several symtabs share a blockvector, exactly one of them |
728 | should be designated the primary, so that the blockvector | |
729 | is relocated exactly once by objfile_relocate. */ | |
c906108c | 730 | |
17c5ed2c | 731 | int primary; |
c906108c | 732 | |
17c5ed2c DC |
733 | /* The macro table for this symtab. Like the blockvector, this |
734 | may be shared between different symtabs --- and normally is for | |
735 | all the symtabs in a given compilation unit. */ | |
736 | struct macro_table *macro_table; | |
99d9066e | 737 | |
17c5ed2c | 738 | /* Name of this source file. */ |
c906108c | 739 | |
17c5ed2c | 740 | char *filename; |
c906108c | 741 | |
17c5ed2c | 742 | /* Directory in which it was compiled, or NULL if we don't know. */ |
c906108c | 743 | |
17c5ed2c | 744 | char *dirname; |
c906108c | 745 | |
17c5ed2c | 746 | /* This component says how to free the data we point to: |
17c5ed2c DC |
747 | free_nothing => do nothing; some other symtab will free |
748 | the data this one uses. | |
749 | free_linetable => free just the linetable. FIXME: Is this redundant | |
750 | with the primary field? */ | |
c906108c | 751 | |
17c5ed2c DC |
752 | enum free_code |
753 | { | |
f73634e5 | 754 | free_nothing, free_linetable |
17c5ed2c DC |
755 | } |
756 | free_code; | |
c906108c | 757 | |
de4f826b DC |
758 | /* A function to call to free space, if necessary. This is IN |
759 | ADDITION to the action indicated by free_code. */ | |
c5aa993b | 760 | |
de4f826b | 761 | void (*free_func)(struct symtab *symtab); |
c906108c | 762 | |
17c5ed2c | 763 | /* Total number of lines found in source file. */ |
c906108c | 764 | |
17c5ed2c | 765 | int nlines; |
c906108c | 766 | |
17c5ed2c DC |
767 | /* line_charpos[N] is the position of the (N-1)th line of the |
768 | source file. "position" means something we can lseek() to; it | |
769 | is not guaranteed to be useful any other way. */ | |
c906108c | 770 | |
17c5ed2c | 771 | int *line_charpos; |
c906108c | 772 | |
17c5ed2c | 773 | /* Language of this source file. */ |
c906108c | 774 | |
17c5ed2c | 775 | enum language language; |
c906108c | 776 | |
17c5ed2c DC |
777 | /* String that identifies the format of the debugging information, such |
778 | as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful | |
779 | for automated testing of gdb but may also be information that is | |
780 | useful to the user. */ | |
c906108c | 781 | |
17c5ed2c | 782 | char *debugformat; |
c906108c | 783 | |
303b6f5d | 784 | /* String of producer version information. May be zero. */ |
c906108c | 785 | |
303b6f5d | 786 | char *producer; |
c906108c | 787 | |
17c5ed2c DC |
788 | /* Full name of file as found by searching the source path. |
789 | NULL if not yet known. */ | |
c906108c | 790 | |
17c5ed2c | 791 | char *fullname; |
c906108c | 792 | |
17c5ed2c | 793 | /* Object file from which this symbol information was read. */ |
c906108c | 794 | |
17c5ed2c | 795 | struct objfile *objfile; |
c906108c | 796 | |
17c5ed2c | 797 | }; |
c906108c SS |
798 | |
799 | #define BLOCKVECTOR(symtab) (symtab)->blockvector | |
800 | #define LINETABLE(symtab) (symtab)->linetable | |
6c95b8df | 801 | #define SYMTAB_PSPACE(symtab) (symtab)->objfile->pspace |
c906108c | 802 | \f |
c5aa993b | 803 | |
c906108c | 804 | /* The virtual function table is now an array of structures which have the |
a960f249 | 805 | form { int16 offset, delta; void *pfn; }. |
c906108c SS |
806 | |
807 | In normal virtual function tables, OFFSET is unused. | |
808 | DELTA is the amount which is added to the apparent object's base | |
809 | address in order to point to the actual object to which the | |
810 | virtual function should be applied. | |
811 | PFN is a pointer to the virtual function. | |
812 | ||
813 | Note that this macro is g++ specific (FIXME). */ | |
c5aa993b | 814 | |
c906108c SS |
815 | #define VTBL_FNADDR_OFFSET 2 |
816 | ||
c906108c SS |
817 | /* External variables and functions for the objects described above. */ |
818 | ||
c906108c SS |
819 | /* See the comment in symfile.c about how current_objfile is used. */ |
820 | ||
821 | extern struct objfile *current_objfile; | |
822 | ||
823 | /* True if we are nested inside psymtab_to_symtab. */ | |
824 | ||
825 | extern int currently_reading_symtab; | |
826 | ||
827 | /* From utils.c. */ | |
828 | extern int demangle; | |
829 | extern int asm_demangle; | |
830 | ||
831 | /* symtab.c lookup functions */ | |
832 | ||
7fc830e2 MK |
833 | extern const char multiple_symbols_ask[]; |
834 | extern const char multiple_symbols_all[]; | |
835 | extern const char multiple_symbols_cancel[]; | |
717d2f5a JB |
836 | |
837 | const char *multiple_symbols_select_mode (void); | |
838 | ||
5eeb2539 AR |
839 | int symbol_matches_domain (enum language symbol_language, |
840 | domain_enum symbol_domain, | |
841 | domain_enum domain); | |
842 | ||
c906108c SS |
843 | /* lookup a symbol table by source file name */ |
844 | ||
1f8cc6db | 845 | extern struct symtab *lookup_symtab (const char *); |
c906108c | 846 | |
6c9353d3 | 847 | /* lookup a symbol by name (optional block) in language. */ |
53c5240f PA |
848 | |
849 | extern struct symbol *lookup_symbol_in_language (const char *, | |
850 | const struct block *, | |
851 | const domain_enum, | |
852 | enum language, | |
2570f2b7 | 853 | int *); |
53c5240f PA |
854 | |
855 | /* lookup a symbol by name (optional block, optional symtab) | |
856 | in the current language */ | |
c906108c | 857 | |
a14ed312 | 858 | extern struct symbol *lookup_symbol (const char *, const struct block *, |
2570f2b7 | 859 | const domain_enum, int *); |
c906108c | 860 | |
5f9a71c3 DC |
861 | /* A default version of lookup_symbol_nonlocal for use by languages |
862 | that can't think of anything better to do. */ | |
863 | ||
864 | extern struct symbol *basic_lookup_symbol_nonlocal (const char *, | |
5f9a71c3 | 865 | const struct block *, |
21b556f4 | 866 | const domain_enum); |
5f9a71c3 DC |
867 | |
868 | /* Some helper functions for languages that need to write their own | |
869 | lookup_symbol_nonlocal functions. */ | |
870 | ||
871 | /* Lookup a symbol in the static block associated to BLOCK, if there | |
872 | is one; do nothing if BLOCK is NULL or a global block. */ | |
873 | ||
874 | extern struct symbol *lookup_symbol_static (const char *name, | |
5f9a71c3 | 875 | const struct block *block, |
21b556f4 | 876 | const domain_enum domain); |
5f9a71c3 DC |
877 | |
878 | /* Lookup a symbol in all files' global blocks (searching psymtabs if | |
879 | necessary). */ | |
880 | ||
881 | extern struct symbol *lookup_symbol_global (const char *name, | |
3a40aaa0 | 882 | const struct block *block, |
21b556f4 | 883 | const domain_enum domain); |
5f9a71c3 DC |
884 | |
885 | /* Lookup a symbol within the block BLOCK. This, unlike | |
886 | lookup_symbol_block, will set SYMTAB and BLOCK_FOUND correctly, and | |
887 | will fix up the symbol if necessary. */ | |
888 | ||
889 | extern struct symbol *lookup_symbol_aux_block (const char *name, | |
5f9a71c3 | 890 | const struct block *block, |
21b556f4 | 891 | const domain_enum domain); |
5f9a71c3 | 892 | |
41f62f39 JK |
893 | /* Lookup a symbol only in the file static scope of all the objfiles. */ |
894 | ||
895 | struct symbol *lookup_static_symbol_aux (const char *name, | |
896 | const domain_enum domain); | |
897 | ||
898 | ||
c906108c | 899 | /* lookup a symbol by name, within a specified block */ |
c5aa993b | 900 | |
a14ed312 | 901 | extern struct symbol *lookup_block_symbol (const struct block *, const char *, |
176620f1 | 902 | const domain_enum); |
c906108c SS |
903 | |
904 | /* lookup a [struct, union, enum] by name, within a specified block */ | |
905 | ||
a14ed312 | 906 | extern struct type *lookup_struct (char *, struct block *); |
c906108c | 907 | |
a14ed312 | 908 | extern struct type *lookup_union (char *, struct block *); |
c906108c | 909 | |
a14ed312 | 910 | extern struct type *lookup_enum (char *, struct block *); |
c906108c | 911 | |
c906108c SS |
912 | /* from blockframe.c: */ |
913 | ||
914 | /* lookup the function symbol corresponding to the address */ | |
915 | ||
a14ed312 | 916 | extern struct symbol *find_pc_function (CORE_ADDR); |
c906108c SS |
917 | |
918 | /* lookup the function corresponding to the address and section */ | |
919 | ||
714835d5 | 920 | extern struct symbol *find_pc_sect_function (CORE_ADDR, struct obj_section *); |
c5aa993b | 921 | |
c906108c SS |
922 | /* lookup function from address, return name, start addr and end addr */ |
923 | ||
570b8f7c AC |
924 | extern int find_pc_partial_function (CORE_ADDR, char **, CORE_ADDR *, |
925 | CORE_ADDR *); | |
c906108c | 926 | |
a14ed312 | 927 | extern void clear_pc_function_cache (void); |
c906108c | 928 | |
c906108c SS |
929 | /* lookup partial symbol table by address and section */ |
930 | ||
ccefe4c4 TT |
931 | extern struct symtab *find_pc_sect_symtab_via_partial (CORE_ADDR, |
932 | struct obj_section *); | |
c906108c SS |
933 | |
934 | /* lookup full symbol table by address */ | |
935 | ||
a14ed312 | 936 | extern struct symtab *find_pc_symtab (CORE_ADDR); |
c906108c SS |
937 | |
938 | /* lookup full symbol table by address and section */ | |
939 | ||
714835d5 | 940 | extern struct symtab *find_pc_sect_symtab (CORE_ADDR, struct obj_section *); |
c906108c | 941 | |
a14ed312 | 942 | extern int find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *); |
c906108c | 943 | |
a14ed312 | 944 | extern void reread_symbols (void); |
c906108c | 945 | |
a14ed312 | 946 | extern struct type *lookup_transparent_type (const char *); |
b368761e | 947 | extern struct type *basic_lookup_transparent_type (const char *); |
c906108c SS |
948 | |
949 | ||
950 | /* Macro for name of symbol to indicate a file compiled with gcc. */ | |
951 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
952 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
953 | #endif | |
954 | ||
955 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ | |
956 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
957 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
958 | #endif | |
959 | ||
960 | /* Functions for dealing with the minimal symbol table, really a misc | |
961 | address<->symbol mapping for things we don't have debug symbols for. */ | |
962 | ||
a14ed312 KB |
963 | extern void prim_record_minimal_symbol (const char *, CORE_ADDR, |
964 | enum minimal_symbol_type, | |
965 | struct objfile *); | |
c906108c | 966 | |
04a679b8 TT |
967 | extern struct minimal_symbol *prim_record_minimal_symbol_full |
968 | (const char *, int, int, CORE_ADDR, | |
969 | enum minimal_symbol_type, | |
970 | int section, asection * bfd_section, struct objfile *); | |
971 | ||
c906108c | 972 | extern struct minimal_symbol *prim_record_minimal_symbol_and_info |
a14ed312 KB |
973 | (const char *, CORE_ADDR, |
974 | enum minimal_symbol_type, | |
b887350f | 975 | int section, asection * bfd_section, struct objfile *); |
c906108c | 976 | |
a14ed312 | 977 | extern unsigned int msymbol_hash_iw (const char *); |
9227b5eb | 978 | |
a14ed312 | 979 | extern unsigned int msymbol_hash (const char *); |
9227b5eb | 980 | |
bccdca4a UW |
981 | extern struct objfile * msymbol_objfile (struct minimal_symbol *sym); |
982 | ||
9227b5eb JB |
983 | extern void |
984 | add_minsym_to_hash_table (struct minimal_symbol *sym, | |
985 | struct minimal_symbol **table); | |
986 | ||
a14ed312 KB |
987 | extern struct minimal_symbol *lookup_minimal_symbol (const char *, |
988 | const char *, | |
989 | struct objfile *); | |
c906108c | 990 | |
a14ed312 | 991 | extern struct minimal_symbol *lookup_minimal_symbol_text (const char *, |
a14ed312 | 992 | struct objfile *); |
c906108c | 993 | |
a14ed312 | 994 | struct minimal_symbol *lookup_minimal_symbol_solib_trampoline (const char *, |
a14ed312 KB |
995 | struct objfile |
996 | *); | |
c906108c | 997 | |
907fc202 UW |
998 | extern struct minimal_symbol *lookup_minimal_symbol_by_pc_name |
999 | (CORE_ADDR, const char *, struct objfile *); | |
1000 | ||
a14ed312 | 1001 | extern struct minimal_symbol *lookup_minimal_symbol_by_pc (CORE_ADDR); |
c906108c | 1002 | |
0d5392b8 TT |
1003 | extern struct minimal_symbol * |
1004 | lookup_minimal_symbol_and_objfile (const char *, | |
1005 | struct objfile **); | |
1006 | ||
714835d5 UW |
1007 | extern struct minimal_symbol |
1008 | *lookup_minimal_symbol_by_pc_section (CORE_ADDR, struct obj_section *); | |
c906108c | 1009 | |
a14ed312 KB |
1010 | extern struct minimal_symbol |
1011 | *lookup_solib_trampoline_symbol_by_pc (CORE_ADDR); | |
c906108c | 1012 | |
52f729a7 | 1013 | extern CORE_ADDR find_solib_trampoline_target (struct frame_info *, CORE_ADDR); |
c906108c | 1014 | |
a14ed312 | 1015 | extern void init_minimal_symbol_collection (void); |
c906108c | 1016 | |
56e290f4 | 1017 | extern struct cleanup *make_cleanup_discard_minimal_symbols (void); |
c906108c | 1018 | |
a14ed312 | 1019 | extern void install_minimal_symbols (struct objfile *); |
c906108c SS |
1020 | |
1021 | /* Sort all the minimal symbols in OBJFILE. */ | |
1022 | ||
a14ed312 | 1023 | extern void msymbols_sort (struct objfile *objfile); |
c906108c SS |
1024 | |
1025 | struct symtab_and_line | |
17c5ed2c | 1026 | { |
6c95b8df PA |
1027 | /* The program space of this sal. */ |
1028 | struct program_space *pspace; | |
1029 | ||
17c5ed2c | 1030 | struct symtab *symtab; |
714835d5 | 1031 | struct obj_section *section; |
17c5ed2c DC |
1032 | /* Line number. Line numbers start at 1 and proceed through symtab->nlines. |
1033 | 0 is never a valid line number; it is used to indicate that line number | |
1034 | information is not available. */ | |
1035 | int line; | |
1036 | ||
1037 | CORE_ADDR pc; | |
1038 | CORE_ADDR end; | |
ed0616c6 VP |
1039 | int explicit_pc; |
1040 | int explicit_line; | |
17c5ed2c | 1041 | }; |
c906108c | 1042 | |
fe39c653 | 1043 | extern void init_sal (struct symtab_and_line *sal); |
c906108c SS |
1044 | |
1045 | struct symtabs_and_lines | |
17c5ed2c DC |
1046 | { |
1047 | struct symtab_and_line *sals; | |
1048 | int nelts; | |
1049 | }; | |
c5aa993b | 1050 | \f |
c906108c SS |
1051 | |
1052 | ||
c906108c SS |
1053 | /* Some types and macros needed for exception catchpoints. |
1054 | Can't put these in target.h because symtab_and_line isn't | |
1055 | known there. This file will be included by breakpoint.c, | |
1056 | hppa-tdep.c, etc. */ | |
1057 | ||
1058 | /* Enums for exception-handling support */ | |
c5aa993b | 1059 | enum exception_event_kind |
17c5ed2c DC |
1060 | { |
1061 | EX_EVENT_THROW, | |
1062 | EX_EVENT_CATCH | |
1063 | }; | |
c906108c | 1064 | |
c906108c SS |
1065 | \f |
1066 | ||
1067 | /* Given a pc value, return line number it is in. Second arg nonzero means | |
1068 | if pc is on the boundary use the previous statement's line number. */ | |
1069 | ||
a14ed312 | 1070 | extern struct symtab_and_line find_pc_line (CORE_ADDR, int); |
c906108c SS |
1071 | |
1072 | /* Same function, but specify a section as well as an address */ | |
1073 | ||
714835d5 UW |
1074 | extern struct symtab_and_line find_pc_sect_line (CORE_ADDR, |
1075 | struct obj_section *, int); | |
c906108c | 1076 | |
c906108c SS |
1077 | /* Given a symtab and line number, return the pc there. */ |
1078 | ||
a14ed312 | 1079 | extern int find_line_pc (struct symtab *, int, CORE_ADDR *); |
c906108c | 1080 | |
570b8f7c AC |
1081 | extern int find_line_pc_range (struct symtab_and_line, CORE_ADDR *, |
1082 | CORE_ADDR *); | |
c906108c | 1083 | |
a14ed312 | 1084 | extern void resolve_sal_pc (struct symtab_and_line *); |
c906108c SS |
1085 | |
1086 | /* Given a string, return the line specified by it. For commands like "list" | |
1087 | and "breakpoint". */ | |
1088 | ||
a14ed312 | 1089 | extern struct symtabs_and_lines decode_line_spec (char *, int); |
c906108c | 1090 | |
a14ed312 | 1091 | extern struct symtabs_and_lines decode_line_spec_1 (char *, int); |
c906108c | 1092 | |
c906108c SS |
1093 | /* Symmisc.c */ |
1094 | ||
a14ed312 | 1095 | void maintenance_print_symbols (char *, int); |
c906108c | 1096 | |
a14ed312 | 1097 | void maintenance_print_psymbols (char *, int); |
c906108c | 1098 | |
a14ed312 | 1099 | void maintenance_print_msymbols (char *, int); |
c906108c | 1100 | |
a14ed312 | 1101 | void maintenance_print_objfiles (char *, int); |
c906108c | 1102 | |
5e7b2f39 | 1103 | void maintenance_info_symtabs (char *, int); |
44ea7b70 | 1104 | |
5e7b2f39 | 1105 | void maintenance_info_psymtabs (char *, int); |
44ea7b70 | 1106 | |
a14ed312 | 1107 | void maintenance_check_symtabs (char *, int); |
c906108c SS |
1108 | |
1109 | /* maint.c */ | |
1110 | ||
a14ed312 | 1111 | void maintenance_print_statistics (char *, int); |
c906108c | 1112 | |
a14ed312 | 1113 | extern void free_symtab (struct symtab *); |
c906108c SS |
1114 | |
1115 | /* Symbol-reading stuff in symfile.c and solib.c. */ | |
1116 | ||
a14ed312 | 1117 | extern void clear_solib (void); |
c906108c | 1118 | |
c906108c SS |
1119 | /* source.c */ |
1120 | ||
a14ed312 | 1121 | extern int identify_source_line (struct symtab *, int, int, CORE_ADDR); |
c906108c | 1122 | |
a14ed312 | 1123 | extern void print_source_lines (struct symtab *, int, int, int); |
c906108c | 1124 | |
a14ed312 | 1125 | extern void forget_cached_source_info (void); |
c906108c | 1126 | |
a14ed312 | 1127 | extern void select_source_symtab (struct symtab *); |
c906108c | 1128 | |
f55ee35c JK |
1129 | extern char **default_make_symbol_completion_list_break_on |
1130 | (char *text, char *word, const char *break_on); | |
41d27058 | 1131 | extern char **default_make_symbol_completion_list (char *, char *); |
a14ed312 | 1132 | extern char **make_symbol_completion_list (char *, char *); |
d8906c6f TJB |
1133 | extern char **make_symbol_completion_list_fn (struct cmd_list_element *, |
1134 | char *, char *); | |
c906108c | 1135 | |
c94fdfd0 EZ |
1136 | extern char **make_file_symbol_completion_list (char *, char *, char *); |
1137 | ||
c94fdfd0 EZ |
1138 | extern char **make_source_files_completion_list (char *, char *); |
1139 | ||
c906108c SS |
1140 | /* symtab.c */ |
1141 | ||
714835d5 | 1142 | int matching_obj_sections (struct obj_section *, struct obj_section *); |
94277a38 | 1143 | |
dd786858 | 1144 | extern const char *find_main_filename (void); |
c906108c | 1145 | |
50641945 FN |
1146 | extern struct symtab *find_line_symtab (struct symtab *, int, int *, int *); |
1147 | ||
17c5ed2c DC |
1148 | extern struct symtab_and_line find_function_start_sal (struct symbol *sym, |
1149 | int); | |
50641945 | 1150 | |
059acae7 UW |
1151 | extern void skip_prologue_sal (struct symtab_and_line *); |
1152 | ||
c906108c SS |
1153 | /* symfile.c */ |
1154 | ||
a14ed312 | 1155 | extern void clear_symtab_users (void); |
c906108c | 1156 | |
dd786858 | 1157 | extern enum language deduce_language_from_filename (const char *); |
c906108c SS |
1158 | |
1159 | /* symtab.c */ | |
1160 | ||
d80b854b UW |
1161 | extern int in_prologue (struct gdbarch *gdbarch, |
1162 | CORE_ADDR pc, CORE_ADDR func_start); | |
c906108c | 1163 | |
d80b854b UW |
1164 | extern CORE_ADDR skip_prologue_using_sal (struct gdbarch *gdbarch, |
1165 | CORE_ADDR func_addr); | |
634aa483 | 1166 | |
a14ed312 KB |
1167 | extern struct symbol *fixup_symbol_section (struct symbol *, |
1168 | struct objfile *); | |
c906108c SS |
1169 | |
1170 | /* Symbol searching */ | |
1171 | ||
1172 | /* When using search_symbols, a list of the following structs is returned. | |
7e73cedf | 1173 | Callers must free the search list using free_search_symbols! */ |
c906108c | 1174 | struct symbol_search |
17c5ed2c DC |
1175 | { |
1176 | /* The block in which the match was found. Could be, for example, | |
1177 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
1178 | int block; | |
c906108c | 1179 | |
17c5ed2c | 1180 | /* Information describing what was found. |
c906108c | 1181 | |
17c5ed2c DC |
1182 | If symtab abd symbol are NOT NULL, then information was found |
1183 | for this match. */ | |
1184 | struct symtab *symtab; | |
1185 | struct symbol *symbol; | |
c906108c | 1186 | |
17c5ed2c DC |
1187 | /* If msymbol is non-null, then a match was made on something for |
1188 | which only minimal_symbols exist. */ | |
1189 | struct minimal_symbol *msymbol; | |
c906108c | 1190 | |
17c5ed2c DC |
1191 | /* A link to the next match, or NULL for the end. */ |
1192 | struct symbol_search *next; | |
1193 | }; | |
c906108c | 1194 | |
176620f1 | 1195 | extern void search_symbols (char *, domain_enum, int, char **, |
a14ed312 KB |
1196 | struct symbol_search **); |
1197 | extern void free_search_symbols (struct symbol_search *); | |
17c5ed2c DC |
1198 | extern struct cleanup *make_cleanup_free_search_symbols (struct symbol_search |
1199 | *); | |
c906108c | 1200 | |
51cc5b07 AC |
1201 | /* The name of the ``main'' function. |
1202 | FIXME: cagney/2001-03-20: Can't make main_name() const since some | |
1203 | of the calling code currently assumes that the string isn't | |
1204 | const. */ | |
1205 | extern void set_main_name (const char *name); | |
17c5ed2c | 1206 | extern /*const */ char *main_name (void); |
51cc5b07 | 1207 | |
3a40aaa0 UW |
1208 | /* Check global symbols in objfile. */ |
1209 | struct symbol *lookup_global_symbol_from_objfile (const struct objfile *objfile, | |
1210 | const char *name, | |
21b556f4 | 1211 | const domain_enum domain); |
3a40aaa0 | 1212 | |
a6c727b2 DJ |
1213 | extern struct symtabs_and_lines expand_line_sal (struct symtab_and_line sal); |
1214 | ||
1215 | /* Return 1 if the supplied producer string matches the ARM RealView | |
1216 | compiler (armcc). */ | |
1217 | int producer_is_realview (const char *producer); | |
3a40aaa0 | 1218 | |
ccefe4c4 TT |
1219 | void fixup_section (struct general_symbol_info *ginfo, |
1220 | CORE_ADDR addr, struct objfile *objfile); | |
1221 | ||
c0201579 JK |
1222 | struct objfile *lookup_objfile_from_block (const struct block *block); |
1223 | ||
c906108c | 1224 | #endif /* !defined(SYMTAB_H) */ |