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c906108c | 1 | /* Symbol table definitions for GDB. |
1bac305b AC |
2 | |
3 | Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, | |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software | |
5 | 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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #if !defined (SYMTAB_H) | |
25 | #define SYMTAB_H 1 | |
26 | ||
5f8a3188 | 27 | /* Opaque declarations. */ |
fe898f56 | 28 | |
5f8a3188 | 29 | struct obstack; |
6a2f5abf | 30 | struct objfile; |
fe898f56 DC |
31 | struct block; |
32 | struct blockvector; | |
c906108c SS |
33 | |
34 | /* Don't do this; it means that if some .o's are compiled with GNU C | |
35 | and some are not (easy to do accidentally the way we configure | |
36 | things; also it is a pain to have to "make clean" every time you | |
37 | want to switch compilers), then GDB dies a horrible death. */ | |
38 | /* GNU C supports enums that are bitfields. Some compilers don't. */ | |
39 | #if 0 && defined(__GNUC__) && !defined(BYTE_BITFIELD) | |
40 | #define BYTE_BITFIELD :8; | |
41 | #else | |
c5aa993b | 42 | #define BYTE_BITFIELD /*nothing */ |
c906108c SS |
43 | #endif |
44 | ||
45 | /* Define a structure for the information that is common to all symbol types, | |
46 | including minimal symbols, partial symbols, and full symbols. In a | |
47 | multilanguage environment, some language specific information may need to | |
48 | be recorded along with each symbol. | |
49 | ||
50 | These fields are ordered to encourage good packing, since we frequently | |
51 | have tens or hundreds of thousands of these. */ | |
52 | ||
53 | struct general_symbol_info | |
17c5ed2c DC |
54 | { |
55 | /* Name of the symbol. This is a required field. Storage for the name is | |
56 | allocated on the psymbol_obstack or symbol_obstack for the associated | |
57 | objfile. */ | |
c906108c | 58 | |
17c5ed2c | 59 | char *name; |
c906108c | 60 | |
17c5ed2c DC |
61 | /* Value of the symbol. Which member of this union to use, and what |
62 | it means, depends on what kind of symbol this is and its | |
63 | SYMBOL_CLASS. See comments there for more details. All of these | |
64 | are in host byte order (though what they point to might be in | |
65 | target byte order, e.g. LOC_CONST_BYTES). */ | |
c906108c | 66 | |
17c5ed2c DC |
67 | union |
68 | { | |
69 | /* The fact that this is a long not a LONGEST mainly limits the | |
70 | range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not | |
71 | sure that is a big deal. */ | |
72 | long ivalue; | |
c906108c | 73 | |
17c5ed2c | 74 | struct block *block; |
c906108c | 75 | |
17c5ed2c | 76 | char *bytes; |
c906108c | 77 | |
17c5ed2c | 78 | CORE_ADDR address; |
c906108c | 79 | |
17c5ed2c | 80 | /* for opaque typedef struct chain */ |
c906108c | 81 | |
17c5ed2c DC |
82 | struct symbol *chain; |
83 | } | |
84 | value; | |
c906108c | 85 | |
17c5ed2c DC |
86 | /* Since one and only one language can apply, wrap the language specific |
87 | information inside a union. */ | |
c906108c | 88 | |
17c5ed2c DC |
89 | union |
90 | { | |
91 | struct cplus_specific /* For C++ */ | |
92 | /* and Java */ | |
93 | { | |
94 | char *demangled_name; | |
95 | } | |
96 | cplus_specific; | |
17c5ed2c DC |
97 | } |
98 | language_specific; | |
c5aa993b | 99 | |
17c5ed2c DC |
100 | /* Record the source code language that applies to this symbol. |
101 | This is used to select one of the fields from the language specific | |
102 | union above. */ | |
c5aa993b | 103 | |
17c5ed2c | 104 | enum language language BYTE_BITFIELD; |
c5aa993b | 105 | |
17c5ed2c DC |
106 | /* Which section is this symbol in? This is an index into |
107 | section_offsets for this objfile. Negative means that the symbol | |
108 | does not get relocated relative to a section. | |
109 | Disclaimer: currently this is just used for xcoff, so don't | |
110 | expect all symbol-reading code to set it correctly (the ELF code | |
111 | also tries to set it correctly). */ | |
c5aa993b | 112 | |
17c5ed2c | 113 | short section; |
c5aa993b | 114 | |
17c5ed2c | 115 | /* The bfd section associated with this symbol. */ |
c5aa993b | 116 | |
17c5ed2c DC |
117 | asection *bfd_section; |
118 | }; | |
c906108c | 119 | |
a14ed312 | 120 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, asection *); |
c906108c | 121 | |
88cda038 EZ |
122 | /* Note that all the following SYMBOL_* macros are used with the |
123 | SYMBOL argument being either a partial symbol, a minimal symbol or | |
124 | a full symbol. All three types have a ginfo field. In particular | |
125 | the SYMBOL_INIT_LANGUAGE_SPECIFIC, SYMBOL_INIT_DEMANGLED_NAME, | |
126 | SYMBOL_DEMANGLED_NAME macros cannot be entirely substituted by | |
127 | functions, unless the callers are changed to pass in the ginfo | |
128 | field only, instead of the SYMBOL parameter. */ | |
129 | ||
c906108c SS |
130 | #define SYMBOL_NAME(symbol) (symbol)->ginfo.name |
131 | #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue | |
132 | #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address | |
133 | #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes | |
134 | #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block | |
135 | #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain | |
136 | #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language | |
137 | #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section | |
138 | #define SYMBOL_BFD_SECTION(symbol) (symbol)->ginfo.bfd_section | |
139 | ||
140 | #define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \ | |
141 | (symbol)->ginfo.language_specific.cplus_specific.demangled_name | |
142 | ||
89aad1f9 | 143 | /* Initializes the language dependent portion of a symbol |
c906108c | 144 | depending upon the language for the symbol. */ |
89aad1f9 EZ |
145 | #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \ |
146 | (symbol_init_language_specific (&(symbol)->ginfo, (language))) | |
147 | extern void symbol_init_language_specific (struct general_symbol_info *symbol, | |
148 | enum language language); | |
c906108c | 149 | |
12af6855 | 150 | #define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \ |
2de7ced7 | 151 | (symbol_init_demangled_name (&(symbol)->ginfo, (obstack))) |
12af6855 | 152 | extern void symbol_init_demangled_name (struct general_symbol_info *symbol, |
17c5ed2c DC |
153 | struct obstack *obstack); |
154 | ||
2de7ced7 DJ |
155 | #define SYMBOL_SET_NAMES(symbol,name,len,objfile) \ |
156 | symbol_set_names (&(symbol)->ginfo, name, len, objfile) | |
157 | extern void symbol_set_names (struct general_symbol_info *symbol, | |
158 | const char *name, int len, | |
159 | struct objfile *objfile); | |
160 | ||
9cc0d196 EZ |
161 | /* Return the demangled name for a symbol based on the language for |
162 | that symbol. If no demangled name exists, return NULL. */ | |
163 | #define SYMBOL_DEMANGLED_NAME(symbol) \ | |
164 | (symbol_demangled_name (&(symbol)->ginfo)) | |
165 | extern char *symbol_demangled_name (struct general_symbol_info *symbol); | |
c906108c | 166 | |
de5ad195 DC |
167 | /* Macro that returns a version of the name of a symbol that is |
168 | suitable for output. In C++ this is the "demangled" form of the | |
169 | name if demangle is on and the "mangled" form of the name if | |
170 | demangle is off. In other languages this is just the symbol name. | |
171 | The result should never be NULL. Don't use this for internal | |
172 | purposes (e.g. storing in a hashtable): it's only suitable for | |
173 | output. */ | |
174 | ||
175 | #define SYMBOL_PRINT_NAME(symbol) \ | |
c906108c SS |
176 | (demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ |
177 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
178 | : SYMBOL_NAME (symbol)) | |
179 | ||
c906108c SS |
180 | /* Macro that tests a symbol for a match against a specified name string. |
181 | First test the unencoded name, then looks for and test a C++ encoded | |
182 | name if it exists. Note that whitespace is ignored while attempting to | |
183 | match a C++ encoded name, so that "foo::bar(int,long)" is the same as | |
184 | "foo :: bar (int, long)". | |
185 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
186 | ||
187 | #define SYMBOL_MATCHES_NAME(symbol, name) \ | |
188 | (STREQ (SYMBOL_NAME (symbol), (name)) \ | |
189 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
190 | && strcmp_iw (SYMBOL_DEMANGLED_NAME (symbol), (name)) == 0)) | |
c5aa993b | 191 | |
c906108c SS |
192 | /* Macro that tests a symbol for an re-match against the last compiled regular |
193 | expression. First test the unencoded name, then look for and test a C++ | |
194 | encoded name if it exists. | |
195 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
196 | ||
197 | #define SYMBOL_MATCHES_REGEXP(symbol) \ | |
198 | (re_exec (SYMBOL_NAME (symbol)) != 0 \ | |
199 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
200 | && re_exec (SYMBOL_DEMANGLED_NAME (symbol)) != 0)) | |
c5aa993b | 201 | |
c906108c SS |
202 | /* Define a simple structure used to hold some very basic information about |
203 | all defined global symbols (text, data, bss, abs, etc). The only required | |
204 | information is the general_symbol_info. | |
205 | ||
206 | In many cases, even if a file was compiled with no special options for | |
207 | debugging at all, as long as was not stripped it will contain sufficient | |
208 | information to build a useful minimal symbol table using this structure. | |
209 | Even when a file contains enough debugging information to build a full | |
210 | symbol table, these minimal symbols are still useful for quickly mapping | |
211 | between names and addresses, and vice versa. They are also sometimes | |
212 | used to figure out what full symbol table entries need to be read in. */ | |
213 | ||
214 | struct minimal_symbol | |
17c5ed2c | 215 | { |
c906108c | 216 | |
17c5ed2c | 217 | /* The general symbol info required for all types of symbols. |
c906108c | 218 | |
17c5ed2c DC |
219 | The SYMBOL_VALUE_ADDRESS contains the address that this symbol |
220 | corresponds to. */ | |
c906108c | 221 | |
17c5ed2c | 222 | struct general_symbol_info ginfo; |
c906108c | 223 | |
17c5ed2c DC |
224 | /* The info field is available for caching machine-specific information |
225 | so it doesn't have to rederive the info constantly (over a serial line). | |
226 | It is initialized to zero and stays that way until target-dependent code | |
227 | sets it. Storage for any data pointed to by this field should be allo- | |
228 | cated on the symbol_obstack for the associated objfile. | |
229 | The type would be "void *" except for reasons of compatibility with older | |
230 | compilers. This field is optional. | |
c906108c | 231 | |
17c5ed2c DC |
232 | Currently, the AMD 29000 tdep.c uses it to remember things it has decoded |
233 | from the instructions in the function header, and the MIPS-16 code uses | |
234 | it to identify 16-bit procedures. */ | |
c906108c | 235 | |
17c5ed2c | 236 | char *info; |
c906108c SS |
237 | |
238 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
17c5ed2c DC |
239 | /* Which source file is this symbol in? Only relevant for mst_file_*. */ |
240 | char *filename; | |
c906108c SS |
241 | #endif |
242 | ||
17c5ed2c DC |
243 | /* Classification types for this symbol. These should be taken as "advisory |
244 | only", since if gdb can't easily figure out a classification it simply | |
245 | selects mst_unknown. It may also have to guess when it can't figure out | |
246 | which is a better match between two types (mst_data versus mst_bss) for | |
247 | example. Since the minimal symbol info is sometimes derived from the | |
248 | BFD library's view of a file, we need to live with what information bfd | |
249 | supplies. */ | |
250 | ||
251 | enum minimal_symbol_type | |
252 | { | |
253 | mst_unknown = 0, /* Unknown type, the default */ | |
254 | mst_text, /* Generally executable instructions */ | |
255 | mst_data, /* Generally initialized data */ | |
256 | mst_bss, /* Generally uninitialized data */ | |
257 | mst_abs, /* Generally absolute (nonrelocatable) */ | |
258 | /* GDB uses mst_solib_trampoline for the start address of a shared | |
259 | library trampoline entry. Breakpoints for shared library functions | |
260 | are put there if the shared library is not yet loaded. | |
261 | After the shared library is loaded, lookup_minimal_symbol will | |
262 | prefer the minimal symbol from the shared library (usually | |
263 | a mst_text symbol) over the mst_solib_trampoline symbol, and the | |
264 | breakpoints will be moved to their true address in the shared | |
265 | library via breakpoint_re_set. */ | |
266 | mst_solib_trampoline, /* Shared library trampoline code */ | |
267 | /* For the mst_file* types, the names are only guaranteed to be unique | |
268 | within a given .o file. */ | |
269 | mst_file_text, /* Static version of mst_text */ | |
270 | mst_file_data, /* Static version of mst_data */ | |
271 | mst_file_bss /* Static version of mst_bss */ | |
272 | } | |
273 | type BYTE_BITFIELD; | |
274 | ||
275 | /* Minimal symbols with the same hash key are kept on a linked | |
276 | list. This is the link. */ | |
277 | ||
278 | struct minimal_symbol *hash_next; | |
279 | ||
280 | /* Minimal symbols are stored in two different hash tables. This is | |
281 | the `next' pointer for the demangled hash table. */ | |
282 | ||
283 | struct minimal_symbol *demangled_hash_next; | |
284 | }; | |
c906108c SS |
285 | |
286 | #define MSYMBOL_INFO(msymbol) (msymbol)->info | |
287 | #define MSYMBOL_TYPE(msymbol) (msymbol)->type | |
c906108c | 288 | |
c906108c | 289 | \f |
c5aa993b | 290 | |
c906108c SS |
291 | /* Represent one symbol name; a variable, constant, function or typedef. */ |
292 | ||
293 | /* Different name spaces for symbols. Looking up a symbol specifies a | |
294 | namespace and ignores symbol definitions in other name spaces. */ | |
c906108c | 295 | |
c5aa993b | 296 | typedef enum |
17c5ed2c DC |
297 | { |
298 | /* UNDEF_NAMESPACE is used when a namespace has not been discovered or | |
299 | none of the following apply. This usually indicates an error either | |
300 | in the symbol information or in gdb's handling of symbols. */ | |
c906108c | 301 | |
17c5ed2c | 302 | UNDEF_NAMESPACE, |
c906108c | 303 | |
17c5ed2c DC |
304 | /* VAR_NAMESPACE is the usual namespace. In C, this contains variables, |
305 | function names, typedef names and enum type values. */ | |
c906108c | 306 | |
17c5ed2c | 307 | VAR_NAMESPACE, |
c906108c | 308 | |
17c5ed2c DC |
309 | /* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names. |
310 | Thus, if `struct foo' is used in a C program, it produces a symbol named | |
311 | `foo' in the STRUCT_NAMESPACE. */ | |
c906108c | 312 | |
17c5ed2c | 313 | STRUCT_NAMESPACE, |
c906108c | 314 | |
17c5ed2c DC |
315 | /* LABEL_NAMESPACE may be used for names of labels (for gotos); |
316 | currently it is not used and labels are not recorded at all. */ | |
c906108c | 317 | |
17c5ed2c | 318 | LABEL_NAMESPACE, |
c906108c | 319 | |
17c5ed2c DC |
320 | /* Searching namespaces. These overlap with VAR_NAMESPACE, providing |
321 | some granularity with the search_symbols function. */ | |
c906108c | 322 | |
17c5ed2c DC |
323 | /* Everything in VAR_NAMESPACE minus FUNCTIONS_-, TYPES_-, and |
324 | METHODS_NAMESPACE */ | |
325 | VARIABLES_NAMESPACE, | |
c906108c | 326 | |
17c5ed2c DC |
327 | /* All functions -- for some reason not methods, though. */ |
328 | FUNCTIONS_NAMESPACE, | |
c906108c | 329 | |
17c5ed2c DC |
330 | /* All defined types */ |
331 | TYPES_NAMESPACE, | |
c906108c | 332 | |
17c5ed2c DC |
333 | /* All class methods -- why is this separated out? */ |
334 | METHODS_NAMESPACE | |
335 | } | |
c5aa993b | 336 | namespace_enum; |
c906108c SS |
337 | |
338 | /* An address-class says where to find the value of a symbol. */ | |
339 | ||
340 | enum address_class | |
17c5ed2c DC |
341 | { |
342 | /* Not used; catches errors */ | |
c5aa993b | 343 | |
17c5ed2c | 344 | LOC_UNDEF, |
c906108c | 345 | |
17c5ed2c | 346 | /* Value is constant int SYMBOL_VALUE, host byteorder */ |
c906108c | 347 | |
17c5ed2c | 348 | LOC_CONST, |
c906108c | 349 | |
17c5ed2c | 350 | /* Value is at fixed address SYMBOL_VALUE_ADDRESS */ |
c906108c | 351 | |
17c5ed2c | 352 | LOC_STATIC, |
c906108c | 353 | |
17c5ed2c | 354 | /* Value is in register. SYMBOL_VALUE is the register number. */ |
c906108c | 355 | |
17c5ed2c | 356 | LOC_REGISTER, |
c906108c | 357 | |
17c5ed2c | 358 | /* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */ |
c906108c | 359 | |
17c5ed2c | 360 | LOC_ARG, |
c906108c | 361 | |
17c5ed2c | 362 | /* Value address is at SYMBOL_VALUE offset in arglist. */ |
c906108c | 363 | |
17c5ed2c | 364 | LOC_REF_ARG, |
c906108c | 365 | |
17c5ed2c DC |
366 | /* Value is in register number SYMBOL_VALUE. Just like LOC_REGISTER |
367 | except this is an argument. Probably the cleaner way to handle | |
368 | this would be to separate address_class (which would include | |
369 | separate ARG and LOCAL to deal with FRAME_ARGS_ADDRESS versus | |
370 | FRAME_LOCALS_ADDRESS), and an is_argument flag. | |
c906108c | 371 | |
17c5ed2c DC |
372 | For some symbol formats (stabs, for some compilers at least), |
373 | the compiler generates two symbols, an argument and a register. | |
374 | In some cases we combine them to a single LOC_REGPARM in symbol | |
375 | reading, but currently not for all cases (e.g. it's passed on the | |
376 | stack and then loaded into a register). */ | |
c906108c | 377 | |
17c5ed2c | 378 | LOC_REGPARM, |
c906108c | 379 | |
17c5ed2c DC |
380 | /* Value is in specified register. Just like LOC_REGPARM except the |
381 | register holds the address of the argument instead of the argument | |
382 | itself. This is currently used for the passing of structs and unions | |
383 | on sparc and hppa. It is also used for call by reference where the | |
384 | address is in a register, at least by mipsread.c. */ | |
c906108c | 385 | |
17c5ed2c | 386 | LOC_REGPARM_ADDR, |
c906108c | 387 | |
17c5ed2c | 388 | /* Value is a local variable at SYMBOL_VALUE offset in stack frame. */ |
c906108c | 389 | |
17c5ed2c | 390 | LOC_LOCAL, |
c906108c | 391 | |
17c5ed2c DC |
392 | /* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace |
393 | STRUCT_NAMESPACE all have this class. */ | |
c906108c | 394 | |
17c5ed2c | 395 | LOC_TYPEDEF, |
c906108c | 396 | |
17c5ed2c | 397 | /* Value is address SYMBOL_VALUE_ADDRESS in the code */ |
c906108c | 398 | |
17c5ed2c | 399 | LOC_LABEL, |
c906108c | 400 | |
17c5ed2c DC |
401 | /* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'. |
402 | In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address | |
403 | of the block. Function names have this class. */ | |
c906108c | 404 | |
17c5ed2c | 405 | LOC_BLOCK, |
c906108c | 406 | |
17c5ed2c DC |
407 | /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in |
408 | target byte order. */ | |
c906108c | 409 | |
17c5ed2c | 410 | LOC_CONST_BYTES, |
c906108c | 411 | |
17c5ed2c DC |
412 | /* Value is arg at SYMBOL_VALUE offset in stack frame. Differs from |
413 | LOC_LOCAL in that symbol is an argument; differs from LOC_ARG in | |
414 | that we find it in the frame (FRAME_LOCALS_ADDRESS), not in the | |
415 | arglist (FRAME_ARGS_ADDRESS). Added for i960, which passes args | |
416 | in regs then copies to frame. */ | |
c906108c | 417 | |
17c5ed2c | 418 | LOC_LOCAL_ARG, |
c906108c | 419 | |
17c5ed2c DC |
420 | /* Value is at SYMBOL_VALUE offset from the current value of |
421 | register number SYMBOL_BASEREG. This exists mainly for the same | |
422 | things that LOC_LOCAL and LOC_ARG do; but we need to do this | |
423 | instead because on 88k DWARF gives us the offset from the | |
424 | frame/stack pointer, rather than the offset from the "canonical | |
425 | frame address" used by COFF, stabs, etc., and we don't know how | |
426 | to convert between these until we start examining prologues. | |
c906108c | 427 | |
17c5ed2c DC |
428 | Note that LOC_BASEREG is much less general than a DWARF expression. |
429 | We don't need the generality (at least not yet), and storing a general | |
430 | DWARF expression would presumably take up more space than the existing | |
431 | scheme. */ | |
c906108c | 432 | |
17c5ed2c | 433 | LOC_BASEREG, |
c906108c | 434 | |
17c5ed2c | 435 | /* Same as LOC_BASEREG but it is an argument. */ |
c906108c | 436 | |
17c5ed2c | 437 | LOC_BASEREG_ARG, |
c906108c | 438 | |
17c5ed2c DC |
439 | /* Value is at fixed address, but the address of the variable has |
440 | to be determined from the minimal symbol table whenever the | |
441 | variable is referenced. | |
442 | This happens if debugging information for a global symbol is | |
443 | emitted and the corresponding minimal symbol is defined | |
444 | in another object file or runtime common storage. | |
445 | The linker might even remove the minimal symbol if the global | |
446 | symbol is never referenced, in which case the symbol remains | |
447 | unresolved. */ | |
c906108c | 448 | |
17c5ed2c | 449 | LOC_UNRESOLVED, |
c906108c | 450 | |
17c5ed2c | 451 | /* Value is at a thread-specific location calculated by a |
407caf07 | 452 | target-specific method. This is used only by hppa. */ |
c906108c | 453 | |
407caf07 | 454 | LOC_HP_THREAD_LOCAL_STATIC, |
c906108c | 455 | |
9d774e44 EZ |
456 | /* Value is at a thread-specific location calculated by a |
457 | target-specific method. SYMBOL_OBJFILE gives the object file | |
458 | in which the symbol is defined; the symbol's value is the | |
459 | offset into that objfile's thread-local storage for the current | |
460 | thread. */ | |
461 | ||
462 | LOC_THREAD_LOCAL_STATIC, | |
463 | ||
17c5ed2c DC |
464 | /* The variable does not actually exist in the program. |
465 | The value is ignored. */ | |
c906108c | 466 | |
17c5ed2c | 467 | LOC_OPTIMIZED_OUT, |
c906108c | 468 | |
17c5ed2c DC |
469 | /* The variable is static, but actually lives at * (address). |
470 | * I.e. do an extra indirection to get to it. | |
471 | * This is used on HP-UX to get at globals that are allocated | |
472 | * in shared libraries, where references from images other | |
473 | * than the one where the global was allocated are done | |
474 | * with a level of indirection. | |
475 | */ | |
c906108c | 476 | |
17c5ed2c DC |
477 | LOC_INDIRECT |
478 | }; | |
c906108c SS |
479 | |
480 | /* Linked list of symbol's live ranges. */ | |
481 | ||
c5aa993b | 482 | struct range_list |
17c5ed2c DC |
483 | { |
484 | CORE_ADDR start; | |
485 | CORE_ADDR end; | |
486 | struct range_list *next; | |
487 | }; | |
c906108c SS |
488 | |
489 | /* Linked list of aliases for a particular main/primary symbol. */ | |
490 | struct alias_list | |
17c5ed2c DC |
491 | { |
492 | struct symbol *sym; | |
493 | struct alias_list *next; | |
494 | }; | |
c906108c SS |
495 | |
496 | struct symbol | |
17c5ed2c | 497 | { |
c906108c | 498 | |
17c5ed2c | 499 | /* The general symbol info required for all types of symbols. */ |
c906108c | 500 | |
17c5ed2c | 501 | struct general_symbol_info ginfo; |
c906108c | 502 | |
17c5ed2c | 503 | /* Data type of value */ |
c906108c | 504 | |
17c5ed2c | 505 | struct type *type; |
c906108c | 506 | |
17c5ed2c | 507 | /* Name space code. */ |
c906108c SS |
508 | |
509 | #ifdef __MFC4__ | |
17c5ed2c DC |
510 | /* FIXME: don't conflict with C++'s namespace */ |
511 | /* would be safer to do a global change for all namespace identifiers. */ | |
c5aa993b | 512 | #define namespace _namespace |
c906108c | 513 | #endif |
17c5ed2c | 514 | namespace_enum namespace BYTE_BITFIELD; |
c906108c | 515 | |
17c5ed2c | 516 | /* Address class */ |
c906108c | 517 | |
17c5ed2c | 518 | enum address_class aclass BYTE_BITFIELD; |
c906108c | 519 | |
17c5ed2c DC |
520 | /* Line number of definition. FIXME: Should we really make the assumption |
521 | that nobody will try to debug files longer than 64K lines? What about | |
522 | machine generated programs? */ | |
c906108c | 523 | |
17c5ed2c | 524 | unsigned short line; |
c906108c | 525 | |
17c5ed2c DC |
526 | /* Some symbols require an additional value to be recorded on a per- |
527 | symbol basis. Stash those values here. */ | |
c5aa993b | 528 | |
17c5ed2c DC |
529 | union |
530 | { | |
531 | /* Used by LOC_BASEREG and LOC_BASEREG_ARG. */ | |
532 | short basereg; | |
9d774e44 EZ |
533 | |
534 | /* Used by LOC_THREAD_LOCAL_STATIC. The objfile in which this | |
535 | symbol is defined. To find a thread-local variable (e.g., a | |
536 | variable declared with the `__thread' storage class), we may | |
537 | need to know which object file it's in. */ | |
538 | struct objfile *objfile; | |
17c5ed2c DC |
539 | } |
540 | aux_value; | |
c906108c SS |
541 | |
542 | ||
17c5ed2c DC |
543 | /* Link to a list of aliases for this symbol. |
544 | Only a "primary/main symbol may have aliases. */ | |
545 | struct alias_list *aliases; | |
c906108c | 546 | |
17c5ed2c DC |
547 | /* List of ranges where this symbol is active. This is only |
548 | used by alias symbols at the current time. */ | |
549 | struct range_list *ranges; | |
261397f8 | 550 | |
17c5ed2c DC |
551 | struct symbol *hash_next; |
552 | }; | |
c906108c SS |
553 | |
554 | ||
555 | #define SYMBOL_NAMESPACE(symbol) (symbol)->namespace | |
556 | #define SYMBOL_CLASS(symbol) (symbol)->aclass | |
557 | #define SYMBOL_TYPE(symbol) (symbol)->type | |
558 | #define SYMBOL_LINE(symbol) (symbol)->line | |
559 | #define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg | |
9d774e44 | 560 | #define SYMBOL_OBJFILE(symbol) (symbol)->aux_value.objfile |
c906108c SS |
561 | #define SYMBOL_ALIASES(symbol) (symbol)->aliases |
562 | #define SYMBOL_RANGES(symbol) (symbol)->ranges | |
563 | \f | |
564 | /* A partial_symbol records the name, namespace, and address class of | |
565 | symbols whose types we have not parsed yet. For functions, it also | |
566 | contains their memory address, so we can find them from a PC value. | |
567 | Each partial_symbol sits in a partial_symtab, all of which are chained | |
a960f249 | 568 | on a partial symtab list and which points to the corresponding |
c906108c SS |
569 | normal symtab once the partial_symtab has been referenced. */ |
570 | ||
571 | struct partial_symbol | |
17c5ed2c | 572 | { |
c906108c | 573 | |
17c5ed2c | 574 | /* The general symbol info required for all types of symbols. */ |
c906108c | 575 | |
17c5ed2c | 576 | struct general_symbol_info ginfo; |
c906108c | 577 | |
17c5ed2c | 578 | /* Name space code. */ |
c906108c | 579 | |
17c5ed2c | 580 | namespace_enum namespace BYTE_BITFIELD; |
c906108c | 581 | |
17c5ed2c | 582 | /* Address class (for info_symbols) */ |
c906108c | 583 | |
17c5ed2c | 584 | enum address_class aclass BYTE_BITFIELD; |
c906108c | 585 | |
17c5ed2c | 586 | }; |
c906108c SS |
587 | |
588 | #define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace | |
589 | #define PSYMBOL_CLASS(psymbol) (psymbol)->aclass | |
c906108c | 590 | \f |
c5aa993b | 591 | |
c906108c SS |
592 | /* Each item represents a line-->pc (or the reverse) mapping. This is |
593 | somewhat more wasteful of space than one might wish, but since only | |
594 | the files which are actually debugged are read in to core, we don't | |
595 | waste much space. */ | |
596 | ||
597 | struct linetable_entry | |
17c5ed2c DC |
598 | { |
599 | int line; | |
600 | CORE_ADDR pc; | |
601 | }; | |
c906108c SS |
602 | |
603 | /* The order of entries in the linetable is significant. They should | |
604 | be sorted by increasing values of the pc field. If there is more than | |
605 | one entry for a given pc, then I'm not sure what should happen (and | |
606 | I not sure whether we currently handle it the best way). | |
607 | ||
608 | Example: a C for statement generally looks like this | |
609 | ||
c5aa993b JM |
610 | 10 0x100 - for the init/test part of a for stmt. |
611 | 20 0x200 | |
612 | 30 0x300 | |
613 | 10 0x400 - for the increment part of a for stmt. | |
c906108c | 614 | |
e8717518 FF |
615 | If an entry has a line number of zero, it marks the start of a PC |
616 | range for which no line number information is available. It is | |
617 | acceptable, though wasteful of table space, for such a range to be | |
618 | zero length. */ | |
c906108c SS |
619 | |
620 | struct linetable | |
17c5ed2c DC |
621 | { |
622 | int nitems; | |
c906108c | 623 | |
17c5ed2c DC |
624 | /* Actually NITEMS elements. If you don't like this use of the |
625 | `struct hack', you can shove it up your ANSI (seriously, if the | |
626 | committee tells us how to do it, we can probably go along). */ | |
627 | struct linetable_entry item[1]; | |
628 | }; | |
c906108c | 629 | |
c906108c SS |
630 | /* How to relocate the symbols from each section in a symbol file. |
631 | Each struct contains an array of offsets. | |
632 | The ordering and meaning of the offsets is file-type-dependent; | |
633 | typically it is indexed by section numbers or symbol types or | |
634 | something like that. | |
635 | ||
636 | To give us flexibility in changing the internal representation | |
637 | of these offsets, the ANOFFSET macro must be used to insert and | |
638 | extract offset values in the struct. */ | |
639 | ||
640 | struct section_offsets | |
17c5ed2c DC |
641 | { |
642 | CORE_ADDR offsets[1]; /* As many as needed. */ | |
643 | }; | |
c906108c | 644 | |
a4c8257b | 645 | #define ANOFFSET(secoff, whichone) \ |
8e65ff28 AC |
646 | ((whichone == -1) \ |
647 | ? (internal_error (__FILE__, __LINE__, "Section index is uninitialized"), -1) \ | |
648 | : secoff->offsets[whichone]) | |
c906108c | 649 | |
b29c9944 JB |
650 | /* The size of a section_offsets table for N sections. */ |
651 | #define SIZEOF_N_SECTION_OFFSETS(n) \ | |
c906108c | 652 | (sizeof (struct section_offsets) \ |
b29c9944 JB |
653 | + sizeof (((struct section_offsets *) 0)->offsets) * ((n)-1)) |
654 | ||
655 | /* The maximum possible size of a section_offsets table. */ | |
656 | #define SIZEOF_SECTION_OFFSETS (SIZEOF_N_SECTION_OFFSETS (SECT_OFF_MAX)) | |
c906108c | 657 | |
a960f249 | 658 | /* Each source file or header is represented by a struct symtab. |
c906108c SS |
659 | These objects are chained through the `next' field. */ |
660 | ||
661 | struct symtab | |
17c5ed2c | 662 | { |
c906108c | 663 | |
17c5ed2c | 664 | /* Chain of all existing symtabs. */ |
c906108c | 665 | |
17c5ed2c | 666 | struct symtab *next; |
c906108c | 667 | |
17c5ed2c DC |
668 | /* List of all symbol scope blocks for this symtab. May be shared |
669 | between different symtabs (and normally is for all the symtabs | |
670 | in a given compilation unit). */ | |
c906108c | 671 | |
17c5ed2c | 672 | struct blockvector *blockvector; |
c906108c | 673 | |
17c5ed2c DC |
674 | /* Table mapping core addresses to line numbers for this file. |
675 | Can be NULL if none. Never shared between different symtabs. */ | |
c906108c | 676 | |
17c5ed2c | 677 | struct linetable *linetable; |
c906108c | 678 | |
17c5ed2c DC |
679 | /* Section in objfile->section_offsets for the blockvector and |
680 | the linetable. Probably always SECT_OFF_TEXT. */ | |
c906108c | 681 | |
17c5ed2c | 682 | int block_line_section; |
c906108c | 683 | |
17c5ed2c DC |
684 | /* If several symtabs share a blockvector, exactly one of them |
685 | should be designated the primary, so that the blockvector | |
686 | is relocated exactly once by objfile_relocate. */ | |
c906108c | 687 | |
17c5ed2c | 688 | int primary; |
c906108c | 689 | |
17c5ed2c DC |
690 | /* The macro table for this symtab. Like the blockvector, this |
691 | may be shared between different symtabs --- and normally is for | |
692 | all the symtabs in a given compilation unit. */ | |
693 | struct macro_table *macro_table; | |
99d9066e | 694 | |
17c5ed2c | 695 | /* Name of this source file. */ |
c906108c | 696 | |
17c5ed2c | 697 | char *filename; |
c906108c | 698 | |
17c5ed2c | 699 | /* Directory in which it was compiled, or NULL if we don't know. */ |
c906108c | 700 | |
17c5ed2c | 701 | char *dirname; |
c906108c | 702 | |
17c5ed2c DC |
703 | /* This component says how to free the data we point to: |
704 | free_contents => do a tree walk and free each object. | |
705 | free_nothing => do nothing; some other symtab will free | |
706 | the data this one uses. | |
707 | free_linetable => free just the linetable. FIXME: Is this redundant | |
708 | with the primary field? */ | |
c906108c | 709 | |
17c5ed2c DC |
710 | enum free_code |
711 | { | |
712 | free_nothing, free_contents, free_linetable | |
713 | } | |
714 | free_code; | |
c906108c | 715 | |
17c5ed2c DC |
716 | /* Pointer to one block of storage to be freed, if nonzero. */ |
717 | /* This is IN ADDITION to the action indicated by free_code. */ | |
c5aa993b | 718 | |
17c5ed2c | 719 | char *free_ptr; |
c906108c | 720 | |
17c5ed2c | 721 | /* Total number of lines found in source file. */ |
c906108c | 722 | |
17c5ed2c | 723 | int nlines; |
c906108c | 724 | |
17c5ed2c DC |
725 | /* line_charpos[N] is the position of the (N-1)th line of the |
726 | source file. "position" means something we can lseek() to; it | |
727 | is not guaranteed to be useful any other way. */ | |
c906108c | 728 | |
17c5ed2c | 729 | int *line_charpos; |
c906108c | 730 | |
17c5ed2c | 731 | /* Language of this source file. */ |
c906108c | 732 | |
17c5ed2c | 733 | enum language language; |
c906108c | 734 | |
17c5ed2c DC |
735 | /* String that identifies the format of the debugging information, such |
736 | as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful | |
737 | for automated testing of gdb but may also be information that is | |
738 | useful to the user. */ | |
c906108c | 739 | |
17c5ed2c | 740 | char *debugformat; |
c906108c | 741 | |
17c5ed2c | 742 | /* String of version information. May be zero. */ |
c906108c | 743 | |
17c5ed2c | 744 | char *version; |
c906108c | 745 | |
17c5ed2c DC |
746 | /* Full name of file as found by searching the source path. |
747 | NULL if not yet known. */ | |
c906108c | 748 | |
17c5ed2c | 749 | char *fullname; |
c906108c | 750 | |
17c5ed2c | 751 | /* Object file from which this symbol information was read. */ |
c906108c | 752 | |
17c5ed2c | 753 | struct objfile *objfile; |
c906108c | 754 | |
17c5ed2c | 755 | }; |
c906108c SS |
756 | |
757 | #define BLOCKVECTOR(symtab) (symtab)->blockvector | |
758 | #define LINETABLE(symtab) (symtab)->linetable | |
c906108c | 759 | \f |
c5aa993b | 760 | |
c906108c SS |
761 | /* Each source file that has not been fully read in is represented by |
762 | a partial_symtab. This contains the information on where in the | |
763 | executable the debugging symbols for a specific file are, and a | |
764 | list of names of global symbols which are located in this file. | |
765 | They are all chained on partial symtab lists. | |
766 | ||
767 | Even after the source file has been read into a symtab, the | |
768 | partial_symtab remains around. They are allocated on an obstack, | |
769 | psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks- | |
770 | style execution of a bunch of .o's. */ | |
771 | ||
772 | struct partial_symtab | |
17c5ed2c | 773 | { |
c906108c | 774 | |
17c5ed2c | 775 | /* Chain of all existing partial symtabs. */ |
c906108c | 776 | |
17c5ed2c | 777 | struct partial_symtab *next; |
c906108c | 778 | |
17c5ed2c | 779 | /* Name of the source file which this partial_symtab defines */ |
c906108c | 780 | |
17c5ed2c | 781 | char *filename; |
c906108c | 782 | |
17c5ed2c | 783 | /* Full path of the source file. NULL if not known. */ |
58d370e0 | 784 | |
17c5ed2c | 785 | char *fullname; |
58d370e0 | 786 | |
17c5ed2c | 787 | /* Information about the object file from which symbols should be read. */ |
c906108c | 788 | |
17c5ed2c | 789 | struct objfile *objfile; |
c906108c | 790 | |
17c5ed2c | 791 | /* Set of relocation offsets to apply to each section. */ |
c906108c | 792 | |
17c5ed2c | 793 | struct section_offsets *section_offsets; |
c906108c | 794 | |
17c5ed2c DC |
795 | /* Range of text addresses covered by this file; texthigh is the |
796 | beginning of the next section. */ | |
c906108c | 797 | |
17c5ed2c DC |
798 | CORE_ADDR textlow; |
799 | CORE_ADDR texthigh; | |
c906108c | 800 | |
17c5ed2c DC |
801 | /* Array of pointers to all of the partial_symtab's which this one |
802 | depends on. Since this array can only be set to previous or | |
803 | the current (?) psymtab, this dependency tree is guaranteed not | |
804 | to have any loops. "depends on" means that symbols must be read | |
805 | for the dependencies before being read for this psymtab; this is | |
806 | for type references in stabs, where if foo.c includes foo.h, declarations | |
807 | in foo.h may use type numbers defined in foo.c. For other debugging | |
808 | formats there may be no need to use dependencies. */ | |
c906108c | 809 | |
17c5ed2c | 810 | struct partial_symtab **dependencies; |
c906108c | 811 | |
17c5ed2c | 812 | int number_of_dependencies; |
c906108c | 813 | |
17c5ed2c DC |
814 | /* Global symbol list. This list will be sorted after readin to |
815 | improve access. Binary search will be the usual method of | |
816 | finding a symbol within it. globals_offset is an integer offset | |
817 | within global_psymbols[]. */ | |
c906108c | 818 | |
17c5ed2c DC |
819 | int globals_offset; |
820 | int n_global_syms; | |
c906108c | 821 | |
17c5ed2c DC |
822 | /* Static symbol list. This list will *not* be sorted after readin; |
823 | to find a symbol in it, exhaustive search must be used. This is | |
824 | reasonable because searches through this list will eventually | |
825 | lead to either the read in of a files symbols for real (assumed | |
826 | to take a *lot* of time; check) or an error (and we don't care | |
827 | how long errors take). This is an offset and size within | |
828 | static_psymbols[]. */ | |
c906108c | 829 | |
17c5ed2c DC |
830 | int statics_offset; |
831 | int n_static_syms; | |
c906108c | 832 | |
17c5ed2c DC |
833 | /* Pointer to symtab eventually allocated for this source file, 0 if |
834 | !readin or if we haven't looked for the symtab after it was readin. */ | |
c906108c | 835 | |
17c5ed2c | 836 | struct symtab *symtab; |
c906108c | 837 | |
17c5ed2c DC |
838 | /* Pointer to function which will read in the symtab corresponding to |
839 | this psymtab. */ | |
c906108c | 840 | |
17c5ed2c | 841 | void (*read_symtab) (struct partial_symtab *); |
c906108c | 842 | |
17c5ed2c DC |
843 | /* Information that lets read_symtab() locate the part of the symbol table |
844 | that this psymtab corresponds to. This information is private to the | |
845 | format-dependent symbol reading routines. For further detail examine | |
846 | the various symbol reading modules. Should really be (void *) but is | |
847 | (char *) as with other such gdb variables. (FIXME) */ | |
c906108c | 848 | |
17c5ed2c | 849 | char *read_symtab_private; |
c906108c | 850 | |
17c5ed2c | 851 | /* Non-zero if the symtab corresponding to this psymtab has been readin */ |
c906108c | 852 | |
17c5ed2c DC |
853 | unsigned char readin; |
854 | }; | |
c906108c SS |
855 | |
856 | /* A fast way to get from a psymtab to its symtab (after the first time). */ | |
857 | #define PSYMTAB_TO_SYMTAB(pst) \ | |
858 | ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst)) | |
c906108c | 859 | \f |
c5aa993b | 860 | |
c906108c | 861 | /* The virtual function table is now an array of structures which have the |
a960f249 | 862 | form { int16 offset, delta; void *pfn; }. |
c906108c SS |
863 | |
864 | In normal virtual function tables, OFFSET is unused. | |
865 | DELTA is the amount which is added to the apparent object's base | |
866 | address in order to point to the actual object to which the | |
867 | virtual function should be applied. | |
868 | PFN is a pointer to the virtual function. | |
869 | ||
870 | Note that this macro is g++ specific (FIXME). */ | |
c5aa993b | 871 | |
c906108c SS |
872 | #define VTBL_FNADDR_OFFSET 2 |
873 | ||
c906108c SS |
874 | /* External variables and functions for the objects described above. */ |
875 | ||
c906108c SS |
876 | /* See the comment in symfile.c about how current_objfile is used. */ |
877 | ||
878 | extern struct objfile *current_objfile; | |
879 | ||
880 | /* True if we are nested inside psymtab_to_symtab. */ | |
881 | ||
882 | extern int currently_reading_symtab; | |
883 | ||
884 | /* From utils.c. */ | |
885 | extern int demangle; | |
886 | extern int asm_demangle; | |
887 | ||
888 | /* symtab.c lookup functions */ | |
889 | ||
890 | /* lookup a symbol table by source file name */ | |
891 | ||
1f8cc6db | 892 | extern struct symtab *lookup_symtab (const char *); |
c906108c SS |
893 | |
894 | /* lookup a symbol by name (optional block, optional symtab) */ | |
895 | ||
a14ed312 KB |
896 | extern struct symbol *lookup_symbol (const char *, const struct block *, |
897 | const namespace_enum, int *, | |
898 | struct symtab **); | |
c906108c SS |
899 | |
900 | /* lookup a symbol by name, within a specified block */ | |
c5aa993b | 901 | |
a14ed312 | 902 | extern struct symbol *lookup_block_symbol (const struct block *, const char *, |
3121eff0 | 903 | const char *, |
a14ed312 | 904 | const namespace_enum); |
c906108c SS |
905 | |
906 | /* lookup a [struct, union, enum] by name, within a specified block */ | |
907 | ||
a14ed312 | 908 | extern struct type *lookup_struct (char *, struct block *); |
c906108c | 909 | |
a14ed312 | 910 | extern struct type *lookup_union (char *, struct block *); |
c906108c | 911 | |
a14ed312 | 912 | extern struct type *lookup_enum (char *, struct block *); |
c906108c | 913 | |
c906108c SS |
914 | /* from blockframe.c: */ |
915 | ||
916 | /* lookup the function symbol corresponding to the address */ | |
917 | ||
a14ed312 | 918 | extern struct symbol *find_pc_function (CORE_ADDR); |
c906108c SS |
919 | |
920 | /* lookup the function corresponding to the address and section */ | |
921 | ||
a14ed312 | 922 | extern struct symbol *find_pc_sect_function (CORE_ADDR, asection *); |
c5aa993b | 923 | |
c906108c SS |
924 | /* lookup function from address, return name, start addr and end addr */ |
925 | ||
570b8f7c AC |
926 | extern int find_pc_partial_function (CORE_ADDR, char **, CORE_ADDR *, |
927 | CORE_ADDR *); | |
c906108c | 928 | |
a14ed312 | 929 | extern void clear_pc_function_cache (void); |
c906108c | 930 | |
5ae5f592 AC |
931 | extern int find_pc_sect_partial_function (CORE_ADDR, asection *, |
932 | char **, CORE_ADDR *, CORE_ADDR *); | |
c906108c SS |
933 | |
934 | /* from symtab.c: */ | |
935 | ||
936 | /* lookup partial symbol table by filename */ | |
937 | ||
1f8cc6db | 938 | extern struct partial_symtab *lookup_partial_symtab (const char *); |
c906108c SS |
939 | |
940 | /* lookup partial symbol table by address */ | |
941 | ||
a14ed312 | 942 | extern struct partial_symtab *find_pc_psymtab (CORE_ADDR); |
c906108c SS |
943 | |
944 | /* lookup partial symbol table by address and section */ | |
945 | ||
a14ed312 | 946 | extern struct partial_symtab *find_pc_sect_psymtab (CORE_ADDR, asection *); |
c906108c SS |
947 | |
948 | /* lookup full symbol table by address */ | |
949 | ||
a14ed312 | 950 | extern struct symtab *find_pc_symtab (CORE_ADDR); |
c906108c SS |
951 | |
952 | /* lookup full symbol table by address and section */ | |
953 | ||
a14ed312 | 954 | extern struct symtab *find_pc_sect_symtab (CORE_ADDR, asection *); |
c906108c SS |
955 | |
956 | /* lookup partial symbol by address */ | |
957 | ||
a14ed312 KB |
958 | extern struct partial_symbol *find_pc_psymbol (struct partial_symtab *, |
959 | CORE_ADDR); | |
c906108c SS |
960 | |
961 | /* lookup partial symbol by address and section */ | |
962 | ||
a14ed312 KB |
963 | extern struct partial_symbol *find_pc_sect_psymbol (struct partial_symtab *, |
964 | CORE_ADDR, asection *); | |
c906108c | 965 | |
a14ed312 | 966 | extern int find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *); |
c906108c | 967 | |
a14ed312 | 968 | extern void reread_symbols (void); |
c906108c | 969 | |
a14ed312 | 970 | extern struct type *lookup_transparent_type (const char *); |
c906108c SS |
971 | |
972 | ||
973 | /* Macro for name of symbol to indicate a file compiled with gcc. */ | |
974 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
975 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
976 | #endif | |
977 | ||
978 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ | |
979 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
980 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
981 | #endif | |
982 | ||
983 | /* Functions for dealing with the minimal symbol table, really a misc | |
984 | address<->symbol mapping for things we don't have debug symbols for. */ | |
985 | ||
a14ed312 KB |
986 | extern void prim_record_minimal_symbol (const char *, CORE_ADDR, |
987 | enum minimal_symbol_type, | |
988 | struct objfile *); | |
c906108c SS |
989 | |
990 | extern struct minimal_symbol *prim_record_minimal_symbol_and_info | |
a14ed312 KB |
991 | (const char *, CORE_ADDR, |
992 | enum minimal_symbol_type, | |
993 | char *info, int section, asection * bfd_section, struct objfile *); | |
c906108c | 994 | |
a14ed312 | 995 | extern unsigned int msymbol_hash_iw (const char *); |
9227b5eb | 996 | |
a14ed312 | 997 | extern unsigned int msymbol_hash (const char *); |
9227b5eb JB |
998 | |
999 | extern void | |
1000 | add_minsym_to_hash_table (struct minimal_symbol *sym, | |
1001 | struct minimal_symbol **table); | |
1002 | ||
a14ed312 KB |
1003 | extern struct minimal_symbol *lookup_minimal_symbol (const char *, |
1004 | const char *, | |
1005 | struct objfile *); | |
c906108c | 1006 | |
a14ed312 KB |
1007 | extern struct minimal_symbol *lookup_minimal_symbol_text (const char *, |
1008 | const char *, | |
1009 | struct objfile *); | |
c906108c | 1010 | |
a14ed312 KB |
1011 | struct minimal_symbol *lookup_minimal_symbol_solib_trampoline (const char *, |
1012 | const char *, | |
1013 | struct objfile | |
1014 | *); | |
c906108c | 1015 | |
a14ed312 | 1016 | extern struct minimal_symbol *lookup_minimal_symbol_by_pc (CORE_ADDR); |
c906108c | 1017 | |
a14ed312 KB |
1018 | extern struct minimal_symbol *lookup_minimal_symbol_by_pc_section (CORE_ADDR, |
1019 | asection | |
1020 | *); | |
c906108c | 1021 | |
a14ed312 KB |
1022 | extern struct minimal_symbol |
1023 | *lookup_solib_trampoline_symbol_by_pc (CORE_ADDR); | |
c906108c | 1024 | |
a14ed312 | 1025 | extern CORE_ADDR find_solib_trampoline_target (CORE_ADDR); |
c906108c | 1026 | |
a14ed312 | 1027 | extern void init_minimal_symbol_collection (void); |
c906108c | 1028 | |
56e290f4 | 1029 | extern struct cleanup *make_cleanup_discard_minimal_symbols (void); |
c906108c | 1030 | |
a14ed312 | 1031 | extern void install_minimal_symbols (struct objfile *); |
c906108c SS |
1032 | |
1033 | /* Sort all the minimal symbols in OBJFILE. */ | |
1034 | ||
a14ed312 | 1035 | extern void msymbols_sort (struct objfile *objfile); |
c906108c SS |
1036 | |
1037 | struct symtab_and_line | |
17c5ed2c DC |
1038 | { |
1039 | struct symtab *symtab; | |
1040 | asection *section; | |
1041 | /* Line number. Line numbers start at 1 and proceed through symtab->nlines. | |
1042 | 0 is never a valid line number; it is used to indicate that line number | |
1043 | information is not available. */ | |
1044 | int line; | |
1045 | ||
1046 | CORE_ADDR pc; | |
1047 | CORE_ADDR end; | |
1048 | }; | |
c906108c | 1049 | |
fe39c653 | 1050 | extern void init_sal (struct symtab_and_line *sal); |
c906108c SS |
1051 | |
1052 | struct symtabs_and_lines | |
17c5ed2c DC |
1053 | { |
1054 | struct symtab_and_line *sals; | |
1055 | int nelts; | |
1056 | }; | |
c5aa993b | 1057 | \f |
c906108c SS |
1058 | |
1059 | ||
c906108c SS |
1060 | /* Some types and macros needed for exception catchpoints. |
1061 | Can't put these in target.h because symtab_and_line isn't | |
1062 | known there. This file will be included by breakpoint.c, | |
1063 | hppa-tdep.c, etc. */ | |
1064 | ||
1065 | /* Enums for exception-handling support */ | |
c5aa993b | 1066 | enum exception_event_kind |
17c5ed2c DC |
1067 | { |
1068 | EX_EVENT_THROW, | |
1069 | EX_EVENT_CATCH | |
1070 | }; | |
c906108c SS |
1071 | |
1072 | /* Type for returning info about an exception */ | |
c5aa993b | 1073 | struct exception_event_record |
17c5ed2c DC |
1074 | { |
1075 | enum exception_event_kind kind; | |
1076 | struct symtab_and_line throw_sal; | |
1077 | struct symtab_and_line catch_sal; | |
1078 | /* This may need to be extended in the future, if | |
1079 | some platforms allow reporting more information, | |
1080 | such as point of rethrow, type of exception object, | |
1081 | type expected by catch clause, etc. */ | |
1082 | }; | |
c906108c SS |
1083 | |
1084 | #define CURRENT_EXCEPTION_KIND (current_exception_event->kind) | |
1085 | #define CURRENT_EXCEPTION_CATCH_SAL (current_exception_event->catch_sal) | |
1086 | #define CURRENT_EXCEPTION_CATCH_LINE (current_exception_event->catch_sal.line) | |
1087 | #define CURRENT_EXCEPTION_CATCH_FILE (current_exception_event->catch_sal.symtab->filename) | |
1088 | #define CURRENT_EXCEPTION_CATCH_PC (current_exception_event->catch_sal.pc) | |
1089 | #define CURRENT_EXCEPTION_THROW_SAL (current_exception_event->throw_sal) | |
1090 | #define CURRENT_EXCEPTION_THROW_LINE (current_exception_event->throw_sal.line) | |
1091 | #define CURRENT_EXCEPTION_THROW_FILE (current_exception_event->throw_sal.symtab->filename) | |
1092 | #define CURRENT_EXCEPTION_THROW_PC (current_exception_event->throw_sal.pc) | |
1093 | \f | |
1094 | ||
1095 | /* Given a pc value, return line number it is in. Second arg nonzero means | |
1096 | if pc is on the boundary use the previous statement's line number. */ | |
1097 | ||
a14ed312 | 1098 | extern struct symtab_and_line find_pc_line (CORE_ADDR, int); |
c906108c SS |
1099 | |
1100 | /* Same function, but specify a section as well as an address */ | |
1101 | ||
a14ed312 | 1102 | extern struct symtab_and_line find_pc_sect_line (CORE_ADDR, asection *, int); |
c906108c | 1103 | |
c906108c SS |
1104 | /* Given a symtab and line number, return the pc there. */ |
1105 | ||
a14ed312 | 1106 | extern int find_line_pc (struct symtab *, int, CORE_ADDR *); |
c906108c | 1107 | |
570b8f7c AC |
1108 | extern int find_line_pc_range (struct symtab_and_line, CORE_ADDR *, |
1109 | CORE_ADDR *); | |
c906108c | 1110 | |
a14ed312 | 1111 | extern void resolve_sal_pc (struct symtab_and_line *); |
c906108c SS |
1112 | |
1113 | /* Given a string, return the line specified by it. For commands like "list" | |
1114 | and "breakpoint". */ | |
1115 | ||
a14ed312 | 1116 | extern struct symtabs_and_lines decode_line_spec (char *, int); |
c906108c | 1117 | |
a14ed312 | 1118 | extern struct symtabs_and_lines decode_line_spec_1 (char *, int); |
c906108c | 1119 | |
c906108c SS |
1120 | /* Symmisc.c */ |
1121 | ||
a14ed312 | 1122 | void maintenance_print_symbols (char *, int); |
c906108c | 1123 | |
a14ed312 | 1124 | void maintenance_print_psymbols (char *, int); |
c906108c | 1125 | |
a14ed312 | 1126 | void maintenance_print_msymbols (char *, int); |
c906108c | 1127 | |
a14ed312 | 1128 | void maintenance_print_objfiles (char *, int); |
c906108c | 1129 | |
a14ed312 | 1130 | void maintenance_check_symtabs (char *, int); |
c906108c SS |
1131 | |
1132 | /* maint.c */ | |
1133 | ||
a14ed312 | 1134 | void maintenance_print_statistics (char *, int); |
c906108c | 1135 | |
a14ed312 | 1136 | extern void free_symtab (struct symtab *); |
c906108c SS |
1137 | |
1138 | /* Symbol-reading stuff in symfile.c and solib.c. */ | |
1139 | ||
a14ed312 | 1140 | extern struct symtab *psymtab_to_symtab (struct partial_symtab *); |
c906108c | 1141 | |
a14ed312 | 1142 | extern void clear_solib (void); |
c906108c | 1143 | |
c906108c SS |
1144 | /* source.c */ |
1145 | ||
a14ed312 | 1146 | extern int identify_source_line (struct symtab *, int, int, CORE_ADDR); |
c906108c | 1147 | |
a14ed312 | 1148 | extern void print_source_lines (struct symtab *, int, int, int); |
c906108c | 1149 | |
a14ed312 | 1150 | extern void forget_cached_source_info (void); |
c906108c | 1151 | |
a14ed312 | 1152 | extern void select_source_symtab (struct symtab *); |
c906108c | 1153 | |
a14ed312 | 1154 | extern char **make_symbol_completion_list (char *, char *); |
c906108c | 1155 | |
c94fdfd0 EZ |
1156 | extern char **make_file_symbol_completion_list (char *, char *, char *); |
1157 | ||
a14ed312 | 1158 | extern struct symbol **make_symbol_overload_list (struct symbol *); |
c906108c | 1159 | |
c94fdfd0 EZ |
1160 | extern char **make_source_files_completion_list (char *, char *); |
1161 | ||
c906108c SS |
1162 | /* symtab.c */ |
1163 | ||
a14ed312 | 1164 | extern struct partial_symtab *find_main_psymtab (void); |
c906108c | 1165 | |
50641945 FN |
1166 | extern struct symtab *find_line_symtab (struct symtab *, int, int *, int *); |
1167 | ||
17c5ed2c DC |
1168 | extern struct symtab_and_line find_function_start_sal (struct symbol *sym, |
1169 | int); | |
50641945 | 1170 | |
c906108c SS |
1171 | /* symfile.c */ |
1172 | ||
a14ed312 | 1173 | extern void clear_symtab_users (void); |
c906108c | 1174 | |
a14ed312 | 1175 | extern enum language deduce_language_from_filename (char *); |
c906108c SS |
1176 | |
1177 | /* symtab.c */ | |
1178 | ||
a14ed312 | 1179 | extern int in_prologue (CORE_ADDR pc, CORE_ADDR func_start); |
c906108c | 1180 | |
a14ed312 KB |
1181 | extern struct symbol *fixup_symbol_section (struct symbol *, |
1182 | struct objfile *); | |
c906108c | 1183 | |
7a78d0ee KB |
1184 | extern struct partial_symbol *fixup_psymbol_section (struct partial_symbol |
1185 | *psym, | |
1186 | struct objfile *objfile); | |
1187 | ||
c906108c SS |
1188 | /* Symbol searching */ |
1189 | ||
1190 | /* When using search_symbols, a list of the following structs is returned. | |
7e73cedf | 1191 | Callers must free the search list using free_search_symbols! */ |
c906108c | 1192 | struct symbol_search |
17c5ed2c DC |
1193 | { |
1194 | /* The block in which the match was found. Could be, for example, | |
1195 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
1196 | int block; | |
c906108c | 1197 | |
17c5ed2c | 1198 | /* Information describing what was found. |
c906108c | 1199 | |
17c5ed2c DC |
1200 | If symtab abd symbol are NOT NULL, then information was found |
1201 | for this match. */ | |
1202 | struct symtab *symtab; | |
1203 | struct symbol *symbol; | |
c906108c | 1204 | |
17c5ed2c DC |
1205 | /* If msymbol is non-null, then a match was made on something for |
1206 | which only minimal_symbols exist. */ | |
1207 | struct minimal_symbol *msymbol; | |
c906108c | 1208 | |
17c5ed2c DC |
1209 | /* A link to the next match, or NULL for the end. */ |
1210 | struct symbol_search *next; | |
1211 | }; | |
c906108c | 1212 | |
a14ed312 KB |
1213 | extern void search_symbols (char *, namespace_enum, int, char **, |
1214 | struct symbol_search **); | |
1215 | extern void free_search_symbols (struct symbol_search *); | |
17c5ed2c DC |
1216 | extern struct cleanup *make_cleanup_free_search_symbols (struct symbol_search |
1217 | *); | |
c906108c | 1218 | |
51cc5b07 AC |
1219 | /* The name of the ``main'' function. |
1220 | FIXME: cagney/2001-03-20: Can't make main_name() const since some | |
1221 | of the calling code currently assumes that the string isn't | |
1222 | const. */ | |
1223 | extern void set_main_name (const char *name); | |
17c5ed2c | 1224 | extern /*const */ char *main_name (void); |
51cc5b07 | 1225 | |
c906108c | 1226 | #endif /* !defined(SYMTAB_H) */ |