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c906108c SS |
1 | /* Symbol table definitions for GDB. |
2 | Copyright 1986, 89, 91, 92, 93, 94, 95, 96, 1998 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #if !defined (SYMTAB_H) | |
22 | #define SYMTAB_H 1 | |
23 | ||
24 | /* Some definitions and declarations to go with use of obstacks. */ | |
25 | ||
26 | #include "obstack.h" | |
27 | #define obstack_chunk_alloc xmalloc | |
28 | #define obstack_chunk_free free | |
29 | #include "bcache.h" | |
30 | ||
31 | /* Don't do this; it means that if some .o's are compiled with GNU C | |
32 | and some are not (easy to do accidentally the way we configure | |
33 | things; also it is a pain to have to "make clean" every time you | |
34 | want to switch compilers), then GDB dies a horrible death. */ | |
35 | /* GNU C supports enums that are bitfields. Some compilers don't. */ | |
36 | #if 0 && defined(__GNUC__) && !defined(BYTE_BITFIELD) | |
37 | #define BYTE_BITFIELD :8; | |
38 | #else | |
39 | #define BYTE_BITFIELD /*nothing*/ | |
40 | #endif | |
41 | ||
42 | /* Define a structure for the information that is common to all symbol types, | |
43 | including minimal symbols, partial symbols, and full symbols. In a | |
44 | multilanguage environment, some language specific information may need to | |
45 | be recorded along with each symbol. | |
46 | ||
47 | These fields are ordered to encourage good packing, since we frequently | |
48 | have tens or hundreds of thousands of these. */ | |
49 | ||
50 | struct general_symbol_info | |
51 | { | |
52 | /* Name of the symbol. This is a required field. Storage for the name is | |
53 | allocated on the psymbol_obstack or symbol_obstack for the associated | |
54 | objfile. */ | |
55 | ||
56 | char *name; | |
57 | ||
58 | /* Value of the symbol. Which member of this union to use, and what | |
59 | it means, depends on what kind of symbol this is and its | |
60 | SYMBOL_CLASS. See comments there for more details. All of these | |
61 | are in host byte order (though what they point to might be in | |
62 | target byte order, e.g. LOC_CONST_BYTES). */ | |
63 | ||
64 | union | |
65 | { | |
66 | /* The fact that this is a long not a LONGEST mainly limits the | |
67 | range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not | |
68 | sure that is a big deal. */ | |
69 | long ivalue; | |
70 | ||
71 | struct block *block; | |
72 | ||
73 | char *bytes; | |
74 | ||
75 | CORE_ADDR address; | |
76 | ||
77 | /* for opaque typedef struct chain */ | |
78 | ||
79 | struct symbol *chain; | |
80 | } | |
81 | value; | |
82 | ||
83 | /* Since one and only one language can apply, wrap the language specific | |
84 | information inside a union. */ | |
85 | ||
86 | union | |
87 | { | |
88 | struct cplus_specific /* For C++ */ | |
89 | /* and Java */ | |
90 | { | |
91 | char *demangled_name; | |
92 | } cplus_specific; | |
93 | struct chill_specific /* For Chill */ | |
94 | { | |
95 | char *demangled_name; | |
96 | } chill_specific; | |
97 | } language_specific; | |
98 | ||
99 | /* Record the source code language that applies to this symbol. | |
100 | This is used to select one of the fields from the language specific | |
101 | union above. */ | |
102 | ||
103 | enum language language BYTE_BITFIELD; | |
104 | ||
105 | /* Which section is this symbol in? This is an index into | |
106 | section_offsets for this objfile. Negative means that the symbol | |
107 | does not get relocated relative to a section. | |
108 | Disclaimer: currently this is just used for xcoff, so don't | |
109 | expect all symbol-reading code to set it correctly (the ELF code | |
110 | also tries to set it correctly). */ | |
111 | ||
112 | short section; | |
113 | ||
114 | /* The bfd section associated with this symbol. */ | |
115 | ||
116 | asection *bfd_section; | |
117 | }; | |
118 | ||
119 | extern CORE_ADDR symbol_overlayed_address PARAMS((CORE_ADDR, asection *)); | |
120 | ||
121 | #define SYMBOL_NAME(symbol) (symbol)->ginfo.name | |
122 | #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue | |
123 | #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address | |
124 | #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes | |
125 | #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block | |
126 | #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain | |
127 | #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language | |
128 | #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section | |
129 | #define SYMBOL_BFD_SECTION(symbol) (symbol)->ginfo.bfd_section | |
130 | ||
131 | #define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \ | |
132 | (symbol)->ginfo.language_specific.cplus_specific.demangled_name | |
133 | ||
134 | /* Macro that initializes the language dependent portion of a symbol | |
135 | depending upon the language for the symbol. */ | |
136 | ||
137 | #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \ | |
138 | do { \ | |
139 | SYMBOL_LANGUAGE (symbol) = language; \ | |
140 | if (SYMBOL_LANGUAGE (symbol) == language_cplus \ | |
141 | || SYMBOL_LANGUAGE (symbol) == language_java \ | |
142 | ) \ | |
143 | { \ | |
144 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
145 | } \ | |
146 | else if (SYMBOL_LANGUAGE (symbol) == language_chill) \ | |
147 | { \ | |
148 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \ | |
149 | } \ | |
150 | else \ | |
151 | { \ | |
152 | memset (&(symbol)->ginfo.language_specific, 0, \ | |
153 | sizeof ((symbol)->ginfo.language_specific)); \ | |
154 | } \ | |
155 | } while (0) | |
156 | ||
157 | /* Macro that attempts to initialize the demangled name for a symbol, | |
158 | based on the language of that symbol. If the language is set to | |
159 | language_auto, it will attempt to find any demangling algorithm | |
160 | that works and then set the language appropriately. If no demangling | |
161 | of any kind is found, the language is set back to language_unknown, | |
162 | so we can avoid doing this work again the next time we encounter | |
163 | the symbol. Any required space to store the name is obtained from the | |
164 | specified obstack. */ | |
165 | ||
166 | #define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \ | |
167 | do { \ | |
168 | char *demangled = NULL; \ | |
169 | if (SYMBOL_LANGUAGE (symbol) == language_cplus \ | |
170 | || SYMBOL_LANGUAGE (symbol) == language_auto) \ | |
171 | { \ | |
172 | demangled = \ | |
173 | cplus_demangle (SYMBOL_NAME (symbol), DMGL_PARAMS | DMGL_ANSI);\ | |
174 | if (demangled != NULL) \ | |
175 | { \ | |
176 | SYMBOL_LANGUAGE (symbol) = language_cplus; \ | |
177 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \ | |
178 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
179 | free (demangled); \ | |
180 | } \ | |
181 | else \ | |
182 | { \ | |
183 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
184 | } \ | |
185 | } \ | |
186 | if (SYMBOL_LANGUAGE (symbol) == language_java) \ | |
187 | { \ | |
188 | demangled = \ | |
189 | cplus_demangle (SYMBOL_NAME (symbol), \ | |
190 | DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); \ | |
191 | if (demangled != NULL) \ | |
192 | { \ | |
193 | SYMBOL_LANGUAGE (symbol) = language_java; \ | |
194 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \ | |
195 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
196 | free (demangled); \ | |
197 | } \ | |
198 | else \ | |
199 | { \ | |
200 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
201 | } \ | |
202 | } \ | |
203 | if (demangled == NULL \ | |
204 | && (SYMBOL_LANGUAGE (symbol) == language_chill \ | |
205 | || SYMBOL_LANGUAGE (symbol) == language_auto)) \ | |
206 | { \ | |
207 | demangled = \ | |
208 | chill_demangle (SYMBOL_NAME (symbol)); \ | |
209 | if (demangled != NULL) \ | |
210 | { \ | |
211 | SYMBOL_LANGUAGE (symbol) = language_chill; \ | |
212 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = \ | |
213 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
214 | free (demangled); \ | |
215 | } \ | |
216 | else \ | |
217 | { \ | |
218 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \ | |
219 | } \ | |
220 | } \ | |
221 | if (SYMBOL_LANGUAGE (symbol) == language_auto) \ | |
222 | { \ | |
223 | SYMBOL_LANGUAGE (symbol) = language_unknown; \ | |
224 | } \ | |
225 | } while (0) | |
226 | ||
227 | /* Macro that returns the demangled name for a symbol based on the language | |
228 | for that symbol. If no demangled name exists, returns NULL. */ | |
229 | ||
230 | #define SYMBOL_DEMANGLED_NAME(symbol) \ | |
231 | (SYMBOL_LANGUAGE (symbol) == language_cplus \ | |
232 | || SYMBOL_LANGUAGE (symbol) == language_java \ | |
233 | ? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \ | |
234 | : (SYMBOL_LANGUAGE (symbol) == language_chill \ | |
235 | ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) \ | |
236 | : NULL)) | |
237 | ||
238 | #define SYMBOL_CHILL_DEMANGLED_NAME(symbol) \ | |
239 | (symbol)->ginfo.language_specific.chill_specific.demangled_name | |
240 | ||
241 | /* Macro that returns the "natural source name" of a symbol. In C++ this is | |
242 | the "demangled" form of the name if demangle is on and the "mangled" form | |
243 | of the name if demangle is off. In other languages this is just the | |
244 | symbol name. The result should never be NULL. */ | |
245 | ||
246 | #define SYMBOL_SOURCE_NAME(symbol) \ | |
247 | (demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
248 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
249 | : SYMBOL_NAME (symbol)) | |
250 | ||
251 | /* Macro that returns the "natural assembly name" of a symbol. In C++ this is | |
252 | the "mangled" form of the name if demangle is off, or if demangle is on and | |
253 | asm_demangle is off. Otherwise if asm_demangle is on it is the "demangled" | |
254 | form. In other languages this is just the symbol name. The result should | |
255 | never be NULL. */ | |
256 | ||
257 | #define SYMBOL_LINKAGE_NAME(symbol) \ | |
258 | (demangle && asm_demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
259 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
260 | : SYMBOL_NAME (symbol)) | |
261 | ||
262 | /* Macro that tests a symbol for a match against a specified name string. | |
263 | First test the unencoded name, then looks for and test a C++ encoded | |
264 | name if it exists. Note that whitespace is ignored while attempting to | |
265 | match a C++ encoded name, so that "foo::bar(int,long)" is the same as | |
266 | "foo :: bar (int, long)". | |
267 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
268 | ||
269 | #define SYMBOL_MATCHES_NAME(symbol, name) \ | |
270 | (STREQ (SYMBOL_NAME (symbol), (name)) \ | |
271 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
272 | && strcmp_iw (SYMBOL_DEMANGLED_NAME (symbol), (name)) == 0)) | |
273 | ||
274 | /* Macro that tests a symbol for an re-match against the last compiled regular | |
275 | expression. First test the unencoded name, then look for and test a C++ | |
276 | encoded name if it exists. | |
277 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
278 | ||
279 | #define SYMBOL_MATCHES_REGEXP(symbol) \ | |
280 | (re_exec (SYMBOL_NAME (symbol)) != 0 \ | |
281 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
282 | && re_exec (SYMBOL_DEMANGLED_NAME (symbol)) != 0)) | |
283 | ||
284 | /* Define a simple structure used to hold some very basic information about | |
285 | all defined global symbols (text, data, bss, abs, etc). The only required | |
286 | information is the general_symbol_info. | |
287 | ||
288 | In many cases, even if a file was compiled with no special options for | |
289 | debugging at all, as long as was not stripped it will contain sufficient | |
290 | information to build a useful minimal symbol table using this structure. | |
291 | Even when a file contains enough debugging information to build a full | |
292 | symbol table, these minimal symbols are still useful for quickly mapping | |
293 | between names and addresses, and vice versa. They are also sometimes | |
294 | used to figure out what full symbol table entries need to be read in. */ | |
295 | ||
296 | struct minimal_symbol | |
297 | { | |
298 | ||
299 | /* The general symbol info required for all types of symbols. | |
300 | ||
301 | The SYMBOL_VALUE_ADDRESS contains the address that this symbol | |
302 | corresponds to. */ | |
303 | ||
304 | struct general_symbol_info ginfo; | |
305 | ||
306 | /* The info field is available for caching machine-specific information | |
307 | so it doesn't have to rederive the info constantly (over a serial line). | |
308 | It is initialized to zero and stays that way until target-dependent code | |
309 | sets it. Storage for any data pointed to by this field should be allo- | |
310 | cated on the symbol_obstack for the associated objfile. | |
311 | The type would be "void *" except for reasons of compatibility with older | |
312 | compilers. This field is optional. | |
313 | ||
314 | Currently, the AMD 29000 tdep.c uses it to remember things it has decoded | |
315 | from the instructions in the function header, and the MIPS-16 code uses | |
316 | it to identify 16-bit procedures. */ | |
317 | ||
318 | char *info; | |
319 | ||
320 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
321 | /* Which source file is this symbol in? Only relevant for mst_file_*. */ | |
322 | char *filename; | |
323 | #endif | |
324 | ||
325 | /* Classification types for this symbol. These should be taken as "advisory | |
326 | only", since if gdb can't easily figure out a classification it simply | |
327 | selects mst_unknown. It may also have to guess when it can't figure out | |
328 | which is a better match between two types (mst_data versus mst_bss) for | |
329 | example. Since the minimal symbol info is sometimes derived from the | |
330 | BFD library's view of a file, we need to live with what information bfd | |
331 | supplies. */ | |
332 | ||
333 | enum minimal_symbol_type | |
334 | { | |
335 | mst_unknown = 0, /* Unknown type, the default */ | |
336 | mst_text, /* Generally executable instructions */ | |
337 | mst_data, /* Generally initialized data */ | |
338 | mst_bss, /* Generally uninitialized data */ | |
339 | mst_abs, /* Generally absolute (nonrelocatable) */ | |
340 | /* GDB uses mst_solib_trampoline for the start address of a shared | |
341 | library trampoline entry. Breakpoints for shared library functions | |
342 | are put there if the shared library is not yet loaded. | |
343 | After the shared library is loaded, lookup_minimal_symbol will | |
344 | prefer the minimal symbol from the shared library (usually | |
345 | a mst_text symbol) over the mst_solib_trampoline symbol, and the | |
346 | breakpoints will be moved to their true address in the shared | |
347 | library via breakpoint_re_set. */ | |
348 | mst_solib_trampoline, /* Shared library trampoline code */ | |
349 | /* For the mst_file* types, the names are only guaranteed to be unique | |
350 | within a given .o file. */ | |
351 | mst_file_text, /* Static version of mst_text */ | |
352 | mst_file_data, /* Static version of mst_data */ | |
353 | mst_file_bss /* Static version of mst_bss */ | |
354 | } type BYTE_BITFIELD; | |
355 | }; | |
356 | ||
357 | #define MSYMBOL_INFO(msymbol) (msymbol)->info | |
358 | #define MSYMBOL_TYPE(msymbol) (msymbol)->type | |
359 | ||
360 | \f | |
361 | /* All of the name-scope contours of the program | |
362 | are represented by `struct block' objects. | |
363 | All of these objects are pointed to by the blockvector. | |
364 | ||
365 | Each block represents one name scope. | |
366 | Each lexical context has its own block. | |
367 | ||
368 | The blockvector begins with some special blocks. | |
369 | The GLOBAL_BLOCK contains all the symbols defined in this compilation | |
370 | whose scope is the entire program linked together. | |
371 | The STATIC_BLOCK contains all the symbols whose scope is the | |
372 | entire compilation excluding other separate compilations. | |
373 | Blocks starting with the FIRST_LOCAL_BLOCK are not special. | |
374 | ||
375 | Each block records a range of core addresses for the code that | |
376 | is in the scope of the block. The STATIC_BLOCK and GLOBAL_BLOCK | |
377 | give, for the range of code, the entire range of code produced | |
378 | by the compilation that the symbol segment belongs to. | |
379 | ||
380 | The blocks appear in the blockvector | |
381 | in order of increasing starting-address, | |
382 | and, within that, in order of decreasing ending-address. | |
383 | ||
384 | This implies that within the body of one function | |
385 | the blocks appear in the order of a depth-first tree walk. */ | |
386 | ||
387 | struct blockvector | |
388 | { | |
389 | /* Number of blocks in the list. */ | |
390 | int nblocks; | |
391 | /* The blocks themselves. */ | |
392 | struct block *block[1]; | |
393 | }; | |
394 | ||
395 | #define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks | |
396 | #define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n] | |
397 | ||
398 | /* Special block numbers */ | |
399 | ||
400 | #define GLOBAL_BLOCK 0 | |
401 | #define STATIC_BLOCK 1 | |
402 | #define FIRST_LOCAL_BLOCK 2 | |
403 | ||
404 | struct block | |
405 | { | |
406 | ||
407 | /* Addresses in the executable code that are in this block. */ | |
408 | ||
409 | CORE_ADDR startaddr; | |
410 | CORE_ADDR endaddr; | |
411 | ||
412 | /* The symbol that names this block, if the block is the body of a | |
413 | function; otherwise, zero. */ | |
414 | ||
415 | struct symbol *function; | |
416 | ||
417 | /* The `struct block' for the containing block, or 0 if none. | |
418 | ||
419 | The superblock of a top-level local block (i.e. a function in the | |
420 | case of C) is the STATIC_BLOCK. The superblock of the | |
421 | STATIC_BLOCK is the GLOBAL_BLOCK. */ | |
422 | ||
423 | struct block *superblock; | |
424 | ||
425 | /* Version of GCC used to compile the function corresponding | |
426 | to this block, or 0 if not compiled with GCC. When possible, | |
427 | GCC should be compatible with the native compiler, or if that | |
428 | is not feasible, the differences should be fixed during symbol | |
429 | reading. As of 16 Apr 93, this flag is never used to distinguish | |
430 | between gcc2 and the native compiler. | |
431 | ||
432 | If there is no function corresponding to this block, this meaning | |
433 | of this flag is undefined. */ | |
434 | ||
435 | unsigned char gcc_compile_flag; | |
436 | ||
437 | /* Number of local symbols. */ | |
438 | ||
439 | int nsyms; | |
440 | ||
441 | /* The symbols. If some of them are arguments, then they must be | |
442 | in the order in which we would like to print them. */ | |
443 | ||
444 | struct symbol *sym[1]; | |
445 | }; | |
446 | ||
447 | #define BLOCK_START(bl) (bl)->startaddr | |
448 | #define BLOCK_END(bl) (bl)->endaddr | |
449 | #define BLOCK_NSYMS(bl) (bl)->nsyms | |
450 | #define BLOCK_SYM(bl, n) (bl)->sym[n] | |
451 | #define BLOCK_FUNCTION(bl) (bl)->function | |
452 | #define BLOCK_SUPERBLOCK(bl) (bl)->superblock | |
453 | #define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag | |
454 | ||
455 | /* Nonzero if symbols of block BL should be sorted alphabetically. | |
456 | Don't sort a block which corresponds to a function. If we did the | |
457 | sorting would have to preserve the order of the symbols for the | |
458 | arguments. */ | |
459 | ||
460 | #define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40 && BLOCK_FUNCTION (bl) == NULL) | |
461 | ||
462 | \f | |
463 | /* Represent one symbol name; a variable, constant, function or typedef. */ | |
464 | ||
465 | /* Different name spaces for symbols. Looking up a symbol specifies a | |
466 | namespace and ignores symbol definitions in other name spaces. */ | |
467 | ||
468 | typedef enum | |
469 | { | |
470 | /* UNDEF_NAMESPACE is used when a namespace has not been discovered or | |
471 | none of the following apply. This usually indicates an error either | |
472 | in the symbol information or in gdb's handling of symbols. */ | |
473 | ||
474 | UNDEF_NAMESPACE, | |
475 | ||
476 | /* VAR_NAMESPACE is the usual namespace. In C, this contains variables, | |
477 | function names, typedef names and enum type values. */ | |
478 | ||
479 | VAR_NAMESPACE, | |
480 | ||
481 | /* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names. | |
482 | Thus, if `struct foo' is used in a C program, it produces a symbol named | |
483 | `foo' in the STRUCT_NAMESPACE. */ | |
484 | ||
485 | STRUCT_NAMESPACE, | |
486 | ||
487 | /* LABEL_NAMESPACE may be used for names of labels (for gotos); | |
488 | currently it is not used and labels are not recorded at all. */ | |
489 | ||
490 | LABEL_NAMESPACE, | |
491 | ||
492 | /* Searching namespaces. These overlap with VAR_NAMESPACE, providing | |
493 | some granularity with the search_symbols function. */ | |
494 | ||
495 | /* Everything in VAR_NAMESPACE minus FUNCTIONS_-, TYPES_-, and | |
496 | METHODS_NAMESPACE */ | |
497 | VARIABLES_NAMESPACE, | |
498 | ||
499 | /* All functions -- for some reason not methods, though. */ | |
500 | FUNCTIONS_NAMESPACE, | |
501 | ||
502 | /* All defined types */ | |
503 | TYPES_NAMESPACE, | |
504 | ||
505 | /* All class methods -- why is this separated out? */ | |
506 | METHODS_NAMESPACE | |
507 | ||
508 | } namespace_enum; | |
509 | ||
510 | /* An address-class says where to find the value of a symbol. */ | |
511 | ||
512 | enum address_class | |
513 | { | |
514 | /* Not used; catches errors */ | |
515 | ||
516 | LOC_UNDEF, | |
517 | ||
518 | /* Value is constant int SYMBOL_VALUE, host byteorder */ | |
519 | ||
520 | LOC_CONST, | |
521 | ||
522 | /* Value is at fixed address SYMBOL_VALUE_ADDRESS */ | |
523 | ||
524 | LOC_STATIC, | |
525 | ||
526 | /* Value is in register. SYMBOL_VALUE is the register number. */ | |
527 | ||
528 | LOC_REGISTER, | |
529 | ||
530 | /* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */ | |
531 | ||
532 | LOC_ARG, | |
533 | ||
534 | /* Value address is at SYMBOL_VALUE offset in arglist. */ | |
535 | ||
536 | LOC_REF_ARG, | |
537 | ||
538 | /* Value is in register number SYMBOL_VALUE. Just like LOC_REGISTER | |
539 | except this is an argument. Probably the cleaner way to handle | |
540 | this would be to separate address_class (which would include | |
541 | separate ARG and LOCAL to deal with FRAME_ARGS_ADDRESS versus | |
542 | FRAME_LOCALS_ADDRESS), and an is_argument flag. | |
543 | ||
544 | For some symbol formats (stabs, for some compilers at least), | |
545 | the compiler generates two symbols, an argument and a register. | |
546 | In some cases we combine them to a single LOC_REGPARM in symbol | |
547 | reading, but currently not for all cases (e.g. it's passed on the | |
548 | stack and then loaded into a register). */ | |
549 | ||
550 | LOC_REGPARM, | |
551 | ||
552 | /* Value is in specified register. Just like LOC_REGPARM except the | |
553 | register holds the address of the argument instead of the argument | |
554 | itself. This is currently used for the passing of structs and unions | |
555 | on sparc and hppa. It is also used for call by reference where the | |
556 | address is in a register, at least by mipsread.c. */ | |
557 | ||
558 | LOC_REGPARM_ADDR, | |
559 | ||
560 | /* Value is a local variable at SYMBOL_VALUE offset in stack frame. */ | |
561 | ||
562 | LOC_LOCAL, | |
563 | ||
564 | /* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace | |
565 | STRUCT_NAMESPACE all have this class. */ | |
566 | ||
567 | LOC_TYPEDEF, | |
568 | ||
569 | /* Value is address SYMBOL_VALUE_ADDRESS in the code */ | |
570 | ||
571 | LOC_LABEL, | |
572 | ||
573 | /* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'. | |
574 | In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address | |
575 | of the block. Function names have this class. */ | |
576 | ||
577 | LOC_BLOCK, | |
578 | ||
579 | /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in | |
580 | target byte order. */ | |
581 | ||
582 | LOC_CONST_BYTES, | |
583 | ||
584 | /* Value is arg at SYMBOL_VALUE offset in stack frame. Differs from | |
585 | LOC_LOCAL in that symbol is an argument; differs from LOC_ARG in | |
586 | that we find it in the frame (FRAME_LOCALS_ADDRESS), not in the | |
587 | arglist (FRAME_ARGS_ADDRESS). Added for i960, which passes args | |
588 | in regs then copies to frame. */ | |
589 | ||
590 | LOC_LOCAL_ARG, | |
591 | ||
592 | /* Value is at SYMBOL_VALUE offset from the current value of | |
593 | register number SYMBOL_BASEREG. This exists mainly for the same | |
594 | things that LOC_LOCAL and LOC_ARG do; but we need to do this | |
595 | instead because on 88k DWARF gives us the offset from the | |
596 | frame/stack pointer, rather than the offset from the "canonical | |
597 | frame address" used by COFF, stabs, etc., and we don't know how | |
598 | to convert between these until we start examining prologues. | |
599 | ||
600 | Note that LOC_BASEREG is much less general than a DWARF expression. | |
601 | We don't need the generality (at least not yet), and storing a general | |
602 | DWARF expression would presumably take up more space than the existing | |
603 | scheme. */ | |
604 | ||
605 | LOC_BASEREG, | |
606 | ||
607 | /* Same as LOC_BASEREG but it is an argument. */ | |
608 | ||
609 | LOC_BASEREG_ARG, | |
610 | ||
611 | /* Value is at fixed address, but the address of the variable has | |
612 | to be determined from the minimal symbol table whenever the | |
613 | variable is referenced. | |
614 | This happens if debugging information for a global symbol is | |
615 | emitted and the corresponding minimal symbol is defined | |
616 | in another object file or runtime common storage. | |
617 | The linker might even remove the minimal symbol if the global | |
618 | symbol is never referenced, in which case the symbol remains | |
619 | unresolved. */ | |
620 | ||
621 | LOC_UNRESOLVED, | |
622 | ||
623 | /* Value is at a thread-specific location calculated by a | |
624 | target-specific method. */ | |
625 | ||
626 | LOC_THREAD_LOCAL_STATIC, | |
627 | ||
628 | /* The variable does not actually exist in the program. | |
629 | The value is ignored. */ | |
630 | ||
631 | LOC_OPTIMIZED_OUT, | |
632 | ||
633 | /* The variable is static, but actually lives at * (address). | |
634 | * I.e. do an extra indirection to get to it. | |
635 | * This is used on HP-UX to get at globals that are allocated | |
636 | * in shared libraries, where references from images other | |
637 | * than the one where the global was allocated are done | |
638 | * with a level of indirection. | |
639 | */ | |
640 | ||
641 | LOC_INDIRECT | |
642 | ||
643 | }; | |
644 | ||
645 | /* Linked list of symbol's live ranges. */ | |
646 | ||
647 | struct range_list | |
648 | { | |
649 | CORE_ADDR start; | |
650 | CORE_ADDR end; | |
651 | struct range_list *next; | |
652 | }; | |
653 | ||
654 | /* Linked list of aliases for a particular main/primary symbol. */ | |
655 | struct alias_list | |
656 | { | |
657 | struct symbol *sym; | |
658 | struct alias_list *next; | |
659 | }; | |
660 | ||
661 | struct symbol | |
662 | { | |
663 | ||
664 | /* The general symbol info required for all types of symbols. */ | |
665 | ||
666 | struct general_symbol_info ginfo; | |
667 | ||
668 | /* Data type of value */ | |
669 | ||
670 | struct type *type; | |
671 | ||
672 | /* Name space code. */ | |
673 | ||
674 | #ifdef __MFC4__ | |
675 | /* FIXME: don't conflict with C++'s namespace */ | |
676 | /* would be safer to do a global change for all namespace identifiers. */ | |
677 | #define namespace _namespace | |
678 | #endif | |
679 | namespace_enum namespace BYTE_BITFIELD; | |
680 | ||
681 | /* Address class */ | |
682 | ||
683 | enum address_class aclass BYTE_BITFIELD; | |
684 | ||
685 | /* Line number of definition. FIXME: Should we really make the assumption | |
686 | that nobody will try to debug files longer than 64K lines? What about | |
687 | machine generated programs? */ | |
688 | ||
689 | unsigned short line; | |
690 | ||
691 | /* Some symbols require an additional value to be recorded on a per- | |
692 | symbol basis. Stash those values here. */ | |
693 | ||
694 | union | |
695 | { | |
696 | /* Used by LOC_BASEREG and LOC_BASEREG_ARG. */ | |
697 | short basereg; | |
698 | } | |
699 | aux_value; | |
700 | ||
701 | ||
702 | /* Link to a list of aliases for this symbol. | |
703 | Only a "primary/main symbol may have aliases. */ | |
704 | struct alias_list *aliases; | |
705 | ||
706 | /* List of ranges where this symbol is active. This is only | |
707 | used by alias symbols at the current time. */ | |
708 | struct range_list *ranges; | |
709 | }; | |
710 | ||
711 | ||
712 | #define SYMBOL_NAMESPACE(symbol) (symbol)->namespace | |
713 | #define SYMBOL_CLASS(symbol) (symbol)->aclass | |
714 | #define SYMBOL_TYPE(symbol) (symbol)->type | |
715 | #define SYMBOL_LINE(symbol) (symbol)->line | |
716 | #define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg | |
717 | #define SYMBOL_ALIASES(symbol) (symbol)->aliases | |
718 | #define SYMBOL_RANGES(symbol) (symbol)->ranges | |
719 | \f | |
720 | /* A partial_symbol records the name, namespace, and address class of | |
721 | symbols whose types we have not parsed yet. For functions, it also | |
722 | contains their memory address, so we can find them from a PC value. | |
723 | Each partial_symbol sits in a partial_symtab, all of which are chained | |
724 | on a partial symtab list and which points to the corresponding | |
725 | normal symtab once the partial_symtab has been referenced. */ | |
726 | ||
727 | struct partial_symbol | |
728 | { | |
729 | ||
730 | /* The general symbol info required for all types of symbols. */ | |
731 | ||
732 | struct general_symbol_info ginfo; | |
733 | ||
734 | /* Name space code. */ | |
735 | ||
736 | namespace_enum namespace BYTE_BITFIELD; | |
737 | ||
738 | /* Address class (for info_symbols) */ | |
739 | ||
740 | enum address_class aclass BYTE_BITFIELD; | |
741 | ||
742 | }; | |
743 | ||
744 | #define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace | |
745 | #define PSYMBOL_CLASS(psymbol) (psymbol)->aclass | |
746 | ||
747 | \f | |
748 | /* Source-file information. This describes the relation between source files, | |
749 | ine numbers and addresses in the program text. */ | |
750 | ||
751 | struct sourcevector | |
752 | { | |
753 | int length; /* Number of source files described */ | |
754 | struct source *source[1]; /* Descriptions of the files */ | |
755 | }; | |
756 | ||
757 | /* Each item represents a line-->pc (or the reverse) mapping. This is | |
758 | somewhat more wasteful of space than one might wish, but since only | |
759 | the files which are actually debugged are read in to core, we don't | |
760 | waste much space. */ | |
761 | ||
762 | struct linetable_entry | |
763 | { | |
764 | int line; | |
765 | CORE_ADDR pc; | |
766 | }; | |
767 | ||
768 | /* The order of entries in the linetable is significant. They should | |
769 | be sorted by increasing values of the pc field. If there is more than | |
770 | one entry for a given pc, then I'm not sure what should happen (and | |
771 | I not sure whether we currently handle it the best way). | |
772 | ||
773 | Example: a C for statement generally looks like this | |
774 | ||
775 | 10 0x100 - for the init/test part of a for stmt. | |
776 | 20 0x200 | |
777 | 30 0x300 | |
778 | 10 0x400 - for the increment part of a for stmt. | |
779 | ||
780 | */ | |
781 | ||
782 | struct linetable | |
783 | { | |
784 | int nitems; | |
785 | ||
786 | /* Actually NITEMS elements. If you don't like this use of the | |
787 | `struct hack', you can shove it up your ANSI (seriously, if the | |
788 | committee tells us how to do it, we can probably go along). */ | |
789 | struct linetable_entry item[1]; | |
790 | }; | |
791 | ||
792 | /* All the information on one source file. */ | |
793 | ||
794 | struct source | |
795 | { | |
796 | char *name; /* Name of file */ | |
797 | struct linetable contents; | |
798 | }; | |
799 | ||
800 | /* How to relocate the symbols from each section in a symbol file. | |
801 | Each struct contains an array of offsets. | |
802 | The ordering and meaning of the offsets is file-type-dependent; | |
803 | typically it is indexed by section numbers or symbol types or | |
804 | something like that. | |
805 | ||
806 | To give us flexibility in changing the internal representation | |
807 | of these offsets, the ANOFFSET macro must be used to insert and | |
808 | extract offset values in the struct. */ | |
809 | ||
810 | struct section_offsets | |
811 | { | |
812 | CORE_ADDR offsets[1]; /* As many as needed. */ | |
813 | }; | |
814 | ||
815 | #define ANOFFSET(secoff, whichone) (secoff->offsets[whichone]) | |
816 | ||
817 | /* The maximum possible size of a section_offsets table. */ | |
818 | ||
819 | #define SIZEOF_SECTION_OFFSETS \ | |
820 | (sizeof (struct section_offsets) \ | |
821 | + sizeof (((struct section_offsets *) 0)->offsets) * (SECT_OFF_MAX-1)) | |
822 | ||
823 | ||
824 | /* Each source file or header is represented by a struct symtab. | |
825 | These objects are chained through the `next' field. */ | |
826 | ||
827 | struct symtab | |
828 | { | |
829 | ||
830 | /* Chain of all existing symtabs. */ | |
831 | ||
832 | struct symtab *next; | |
833 | ||
834 | /* List of all symbol scope blocks for this symtab. May be shared | |
835 | between different symtabs (and normally is for all the symtabs | |
836 | in a given compilation unit). */ | |
837 | ||
838 | struct blockvector *blockvector; | |
839 | ||
840 | /* Table mapping core addresses to line numbers for this file. | |
841 | Can be NULL if none. Never shared between different symtabs. */ | |
842 | ||
843 | struct linetable *linetable; | |
844 | ||
845 | /* Section in objfile->section_offsets for the blockvector and | |
846 | the linetable. Probably always SECT_OFF_TEXT. */ | |
847 | ||
848 | int block_line_section; | |
849 | ||
850 | /* If several symtabs share a blockvector, exactly one of them | |
851 | should be designed the primary, so that the blockvector | |
852 | is relocated exactly once by objfile_relocate. */ | |
853 | ||
854 | int primary; | |
855 | ||
856 | /* Name of this source file. */ | |
857 | ||
858 | char *filename; | |
859 | ||
860 | /* Directory in which it was compiled, or NULL if we don't know. */ | |
861 | ||
862 | char *dirname; | |
863 | ||
864 | /* This component says how to free the data we point to: | |
865 | free_contents => do a tree walk and free each object. | |
866 | free_nothing => do nothing; some other symtab will free | |
867 | the data this one uses. | |
868 | free_linetable => free just the linetable. FIXME: Is this redundant | |
869 | with the primary field? */ | |
870 | ||
871 | enum free_code | |
872 | { | |
873 | free_nothing, free_contents, free_linetable | |
874 | } | |
875 | free_code; | |
876 | ||
877 | /* Pointer to one block of storage to be freed, if nonzero. */ | |
878 | /* This is IN ADDITION to the action indicated by free_code. */ | |
879 | ||
880 | char *free_ptr; | |
881 | ||
882 | /* Total number of lines found in source file. */ | |
883 | ||
884 | int nlines; | |
885 | ||
886 | /* line_charpos[N] is the position of the (N-1)th line of the | |
887 | source file. "position" means something we can lseek() to; it | |
888 | is not guaranteed to be useful any other way. */ | |
889 | ||
890 | int *line_charpos; | |
891 | ||
892 | /* Language of this source file. */ | |
893 | ||
894 | enum language language; | |
895 | ||
896 | /* String that identifies the format of the debugging information, such | |
897 | as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful | |
898 | for automated testing of gdb but may also be information that is | |
899 | useful to the user. */ | |
900 | ||
901 | char *debugformat; | |
902 | ||
903 | /* String of version information. May be zero. */ | |
904 | ||
905 | char *version; | |
906 | ||
907 | /* Full name of file as found by searching the source path. | |
908 | NULL if not yet known. */ | |
909 | ||
910 | char *fullname; | |
911 | ||
912 | /* Object file from which this symbol information was read. */ | |
913 | ||
914 | struct objfile *objfile; | |
915 | ||
916 | }; | |
917 | ||
918 | #define BLOCKVECTOR(symtab) (symtab)->blockvector | |
919 | #define LINETABLE(symtab) (symtab)->linetable | |
920 | ||
921 | \f | |
922 | /* Each source file that has not been fully read in is represented by | |
923 | a partial_symtab. This contains the information on where in the | |
924 | executable the debugging symbols for a specific file are, and a | |
925 | list of names of global symbols which are located in this file. | |
926 | They are all chained on partial symtab lists. | |
927 | ||
928 | Even after the source file has been read into a symtab, the | |
929 | partial_symtab remains around. They are allocated on an obstack, | |
930 | psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks- | |
931 | style execution of a bunch of .o's. */ | |
932 | ||
933 | struct partial_symtab | |
934 | { | |
935 | ||
936 | /* Chain of all existing partial symtabs. */ | |
937 | ||
938 | struct partial_symtab *next; | |
939 | ||
940 | /* Name of the source file which this partial_symtab defines */ | |
941 | ||
942 | char *filename; | |
943 | ||
944 | /* Information about the object file from which symbols should be read. */ | |
945 | ||
946 | struct objfile *objfile; | |
947 | ||
948 | /* Set of relocation offsets to apply to each section. */ | |
949 | ||
950 | struct section_offsets *section_offsets; | |
951 | ||
952 | /* Range of text addresses covered by this file; texthigh is the | |
953 | beginning of the next section. */ | |
954 | ||
955 | CORE_ADDR textlow; | |
956 | CORE_ADDR texthigh; | |
957 | ||
958 | /* Array of pointers to all of the partial_symtab's which this one | |
959 | depends on. Since this array can only be set to previous or | |
960 | the current (?) psymtab, this dependency tree is guaranteed not | |
961 | to have any loops. "depends on" means that symbols must be read | |
962 | for the dependencies before being read for this psymtab; this is | |
963 | for type references in stabs, where if foo.c includes foo.h, declarations | |
964 | in foo.h may use type numbers defined in foo.c. For other debugging | |
965 | formats there may be no need to use dependencies. */ | |
966 | ||
967 | struct partial_symtab **dependencies; | |
968 | ||
969 | int number_of_dependencies; | |
970 | ||
971 | /* Global symbol list. This list will be sorted after readin to | |
972 | improve access. Binary search will be the usual method of | |
973 | finding a symbol within it. globals_offset is an integer offset | |
974 | within global_psymbols[]. */ | |
975 | ||
976 | int globals_offset; | |
977 | int n_global_syms; | |
978 | ||
979 | /* Static symbol list. This list will *not* be sorted after readin; | |
980 | to find a symbol in it, exhaustive search must be used. This is | |
981 | reasonable because searches through this list will eventually | |
982 | lead to either the read in of a files symbols for real (assumed | |
983 | to take a *lot* of time; check) or an error (and we don't care | |
984 | how long errors take). This is an offset and size within | |
985 | static_psymbols[]. */ | |
986 | ||
987 | int statics_offset; | |
988 | int n_static_syms; | |
989 | ||
990 | /* Pointer to symtab eventually allocated for this source file, 0 if | |
991 | !readin or if we haven't looked for the symtab after it was readin. */ | |
992 | ||
993 | struct symtab *symtab; | |
994 | ||
995 | /* Pointer to function which will read in the symtab corresponding to | |
996 | this psymtab. */ | |
997 | ||
998 | void (*read_symtab) PARAMS ((struct partial_symtab *)); | |
999 | ||
1000 | /* Information that lets read_symtab() locate the part of the symbol table | |
1001 | that this psymtab corresponds to. This information is private to the | |
1002 | format-dependent symbol reading routines. For further detail examine | |
1003 | the various symbol reading modules. Should really be (void *) but is | |
1004 | (char *) as with other such gdb variables. (FIXME) */ | |
1005 | ||
1006 | char *read_symtab_private; | |
1007 | ||
1008 | /* Non-zero if the symtab corresponding to this psymtab has been readin */ | |
1009 | ||
1010 | unsigned char readin; | |
1011 | }; | |
1012 | ||
1013 | /* A fast way to get from a psymtab to its symtab (after the first time). */ | |
1014 | #define PSYMTAB_TO_SYMTAB(pst) \ | |
1015 | ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst)) | |
1016 | ||
1017 | \f | |
1018 | /* The virtual function table is now an array of structures which have the | |
1019 | form { int16 offset, delta; void *pfn; }. | |
1020 | ||
1021 | In normal virtual function tables, OFFSET is unused. | |
1022 | DELTA is the amount which is added to the apparent object's base | |
1023 | address in order to point to the actual object to which the | |
1024 | virtual function should be applied. | |
1025 | PFN is a pointer to the virtual function. | |
1026 | ||
1027 | Note that this macro is g++ specific (FIXME). */ | |
1028 | ||
1029 | #define VTBL_FNADDR_OFFSET 2 | |
1030 | ||
1031 | /* Macro that yields non-zero value iff NAME is the prefix for C++ operator | |
1032 | names. If you leave out the parenthesis here you will lose! | |
1033 | Currently 'o' 'p' CPLUS_MARKER is used for both the symbol in the | |
1034 | symbol-file and the names in gdb's symbol table. | |
1035 | Note that this macro is g++ specific (FIXME). */ | |
1036 | ||
1037 | #define OPNAME_PREFIX_P(NAME) \ | |
1038 | ((NAME)[0] == 'o' && (NAME)[1] == 'p' && is_cplus_marker ((NAME)[2])) | |
1039 | ||
1040 | /* Macro that yields non-zero value iff NAME is the prefix for C++ vtbl | |
1041 | names. Note that this macro is g++ specific (FIXME). | |
1042 | '_vt$' is the old cfront-style vtables; '_VT$' is the new | |
1043 | style, using thunks (where '$' is really CPLUS_MARKER). */ | |
1044 | ||
1045 | #define VTBL_PREFIX_P(NAME) \ | |
1046 | ((NAME)[0] == '_' \ | |
1047 | && (((NAME)[1] == 'V' && (NAME)[2] == 'T') \ | |
1048 | || ((NAME)[1] == 'v' && (NAME)[2] == 't')) \ | |
1049 | && is_cplus_marker ((NAME)[3])) | |
1050 | ||
1051 | /* Macro that yields non-zero value iff NAME is the prefix for C++ destructor | |
1052 | names. Note that this macro is g++ specific (FIXME). */ | |
1053 | ||
1054 | #define DESTRUCTOR_PREFIX_P(NAME) \ | |
1055 | ((NAME)[0] == '_' && is_cplus_marker ((NAME)[1]) && (NAME)[2] == '_') | |
1056 | ||
1057 | \f | |
1058 | /* External variables and functions for the objects described above. */ | |
1059 | ||
1060 | /* This symtab variable specifies the current file for printing source lines */ | |
1061 | ||
1062 | extern struct symtab *current_source_symtab; | |
1063 | ||
1064 | /* This is the next line to print for listing source lines. */ | |
1065 | ||
1066 | extern int current_source_line; | |
1067 | ||
1068 | /* See the comment in symfile.c about how current_objfile is used. */ | |
1069 | ||
1070 | extern struct objfile *current_objfile; | |
1071 | ||
1072 | /* True if we are nested inside psymtab_to_symtab. */ | |
1073 | ||
1074 | extern int currently_reading_symtab; | |
1075 | ||
1076 | /* From utils.c. */ | |
1077 | extern int demangle; | |
1078 | extern int asm_demangle; | |
1079 | ||
1080 | /* symtab.c lookup functions */ | |
1081 | ||
1082 | /* lookup a symbol table by source file name */ | |
1083 | ||
1084 | extern struct symtab * | |
1085 | lookup_symtab PARAMS ((char *)); | |
1086 | ||
1087 | /* lookup a symbol by name (optional block, optional symtab) */ | |
1088 | ||
1089 | extern struct symbol * | |
1090 | lookup_symbol PARAMS ((const char *, const struct block *, | |
1091 | const namespace_enum, int *, struct symtab **)); | |
1092 | ||
1093 | /* lookup a symbol by name, within a specified block */ | |
1094 | ||
1095 | extern struct symbol * | |
1096 | lookup_block_symbol PARAMS ((const struct block *, const char *, | |
1097 | const namespace_enum)); | |
1098 | ||
1099 | /* lookup a [struct, union, enum] by name, within a specified block */ | |
1100 | ||
1101 | extern struct type * | |
1102 | lookup_struct PARAMS ((char *, struct block *)); | |
1103 | ||
1104 | extern struct type * | |
1105 | lookup_union PARAMS ((char *, struct block *)); | |
1106 | ||
1107 | extern struct type * | |
1108 | lookup_enum PARAMS ((char *, struct block *)); | |
1109 | ||
1110 | /* lookup the function corresponding to the block */ | |
1111 | ||
1112 | extern struct symbol * | |
1113 | block_function PARAMS ((struct block *)); | |
1114 | ||
1115 | /* from blockframe.c: */ | |
1116 | ||
1117 | /* lookup the function symbol corresponding to the address */ | |
1118 | ||
1119 | extern struct symbol * | |
1120 | find_pc_function PARAMS ((CORE_ADDR)); | |
1121 | ||
1122 | /* lookup the function corresponding to the address and section */ | |
1123 | ||
1124 | extern struct symbol * | |
1125 | find_pc_sect_function PARAMS ((CORE_ADDR, asection *)); | |
1126 | ||
1127 | /* lookup function from address, return name, start addr and end addr */ | |
1128 | ||
1129 | extern int | |
1130 | find_pc_partial_function PARAMS ((CORE_ADDR, char **, | |
1131 | CORE_ADDR *, CORE_ADDR *)); | |
1132 | ||
1133 | extern void | |
1134 | clear_pc_function_cache PARAMS ((void)); | |
1135 | ||
1136 | extern int | |
1137 | find_pc_sect_partial_function PARAMS ((CORE_ADDR, asection *, | |
1138 | char **, CORE_ADDR *, CORE_ADDR *)); | |
1139 | ||
1140 | /* from symtab.c: */ | |
1141 | ||
1142 | /* lookup partial symbol table by filename */ | |
1143 | ||
1144 | extern struct partial_symtab * | |
1145 | lookup_partial_symtab PARAMS ((char *)); | |
1146 | ||
1147 | /* lookup partial symbol table by address */ | |
1148 | ||
1149 | extern struct partial_symtab * | |
1150 | find_pc_psymtab PARAMS ((CORE_ADDR)); | |
1151 | ||
1152 | /* lookup partial symbol table by address and section */ | |
1153 | ||
1154 | extern struct partial_symtab * | |
1155 | find_pc_sect_psymtab PARAMS ((CORE_ADDR, asection *)); | |
1156 | ||
1157 | /* lookup full symbol table by address */ | |
1158 | ||
1159 | extern struct symtab * | |
1160 | find_pc_symtab PARAMS ((CORE_ADDR)); | |
1161 | ||
1162 | /* lookup full symbol table by address and section */ | |
1163 | ||
1164 | extern struct symtab * | |
1165 | find_pc_sect_symtab PARAMS ((CORE_ADDR, asection *)); | |
1166 | ||
1167 | /* lookup partial symbol by address */ | |
1168 | ||
1169 | extern struct partial_symbol * | |
1170 | find_pc_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR)); | |
1171 | ||
1172 | /* lookup partial symbol by address and section */ | |
1173 | ||
1174 | extern struct partial_symbol * | |
1175 | find_pc_sect_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR, asection *)); | |
1176 | ||
1177 | extern int | |
1178 | find_pc_line_pc_range PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *)); | |
1179 | ||
1180 | extern int | |
1181 | contained_in PARAMS ((struct block *, struct block *)); | |
1182 | ||
1183 | extern void | |
1184 | reread_symbols PARAMS ((void)); | |
1185 | ||
1186 | extern struct type * | |
1187 | lookup_transparent_type PARAMS ((const char *)); | |
1188 | ||
1189 | ||
1190 | /* Macro for name of symbol to indicate a file compiled with gcc. */ | |
1191 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
1192 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
1193 | #endif | |
1194 | ||
1195 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ | |
1196 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
1197 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
1198 | #endif | |
1199 | ||
1200 | /* Functions for dealing with the minimal symbol table, really a misc | |
1201 | address<->symbol mapping for things we don't have debug symbols for. */ | |
1202 | ||
1203 | extern void prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR, | |
1204 | enum minimal_symbol_type, | |
1205 | struct objfile *)); | |
1206 | ||
1207 | extern struct minimal_symbol *prim_record_minimal_symbol_and_info | |
1208 | PARAMS ((const char *, CORE_ADDR, | |
1209 | enum minimal_symbol_type, | |
1210 | char *info, int section, | |
1211 | asection *bfd_section, | |
1212 | struct objfile *)); | |
1213 | ||
1214 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
1215 | extern CORE_ADDR find_stab_function_addr PARAMS ((char *, | |
1216 | struct partial_symtab *, | |
1217 | struct objfile *)); | |
1218 | #endif | |
1219 | ||
1220 | extern struct minimal_symbol * | |
1221 | lookup_minimal_symbol PARAMS ((const char *, const char *, struct objfile *)); | |
1222 | ||
1223 | extern struct minimal_symbol * | |
1224 | lookup_minimal_symbol_text PARAMS ((const char *, const char *, struct objfile *)); | |
1225 | ||
1226 | struct minimal_symbol * | |
1227 | lookup_minimal_symbol_solib_trampoline PARAMS ((const char *, | |
1228 | const char *, | |
1229 | struct objfile *)); | |
1230 | ||
1231 | extern struct minimal_symbol * | |
1232 | lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR)); | |
1233 | ||
1234 | extern struct minimal_symbol * | |
1235 | lookup_minimal_symbol_by_pc_section PARAMS ((CORE_ADDR, asection *)); | |
1236 | ||
1237 | extern struct minimal_symbol * | |
1238 | lookup_solib_trampoline_symbol_by_pc PARAMS ((CORE_ADDR)); | |
1239 | ||
1240 | extern CORE_ADDR | |
1241 | find_solib_trampoline_target PARAMS ((CORE_ADDR)); | |
1242 | ||
1243 | extern void | |
1244 | init_minimal_symbol_collection PARAMS ((void)); | |
1245 | ||
1246 | extern void | |
1247 | discard_minimal_symbols PARAMS ((int)); | |
1248 | ||
1249 | extern void | |
1250 | install_minimal_symbols PARAMS ((struct objfile *)); | |
1251 | ||
1252 | /* Sort all the minimal symbols in OBJFILE. */ | |
1253 | ||
1254 | extern void msymbols_sort PARAMS ((struct objfile *objfile)); | |
1255 | ||
1256 | struct symtab_and_line | |
1257 | { | |
1258 | struct symtab *symtab; | |
1259 | asection *section; | |
1260 | /* Line number. Line numbers start at 1 and proceed through symtab->nlines. | |
1261 | 0 is never a valid line number; it is used to indicate that line number | |
1262 | information is not available. */ | |
1263 | int line; | |
1264 | ||
1265 | CORE_ADDR pc; | |
1266 | CORE_ADDR end; | |
1267 | }; | |
1268 | ||
1269 | #define INIT_SAL(sal) { \ | |
1270 | (sal)->symtab = 0; \ | |
1271 | (sal)->section = 0; \ | |
1272 | (sal)->line = 0; \ | |
1273 | (sal)->pc = 0; \ | |
1274 | (sal)->end = 0; \ | |
1275 | } | |
1276 | ||
1277 | struct symtabs_and_lines | |
1278 | { | |
1279 | struct symtab_and_line *sals; | |
1280 | int nelts; | |
1281 | }; | |
1282 | ||
1283 | ||
1284 | \f | |
1285 | /* Some types and macros needed for exception catchpoints. | |
1286 | Can't put these in target.h because symtab_and_line isn't | |
1287 | known there. This file will be included by breakpoint.c, | |
1288 | hppa-tdep.c, etc. */ | |
1289 | ||
1290 | /* Enums for exception-handling support */ | |
1291 | enum exception_event_kind { | |
1292 | EX_EVENT_THROW, | |
1293 | EX_EVENT_CATCH | |
1294 | }; | |
1295 | ||
1296 | /* Type for returning info about an exception */ | |
1297 | struct exception_event_record { | |
1298 | enum exception_event_kind kind; | |
1299 | struct symtab_and_line throw_sal; | |
1300 | struct symtab_and_line catch_sal; | |
1301 | /* This may need to be extended in the future, if | |
1302 | some platforms allow reporting more information, | |
1303 | such as point of rethrow, type of exception object, | |
1304 | type expected by catch clause, etc. */ | |
1305 | }; | |
1306 | ||
1307 | #define CURRENT_EXCEPTION_KIND (current_exception_event->kind) | |
1308 | #define CURRENT_EXCEPTION_CATCH_SAL (current_exception_event->catch_sal) | |
1309 | #define CURRENT_EXCEPTION_CATCH_LINE (current_exception_event->catch_sal.line) | |
1310 | #define CURRENT_EXCEPTION_CATCH_FILE (current_exception_event->catch_sal.symtab->filename) | |
1311 | #define CURRENT_EXCEPTION_CATCH_PC (current_exception_event->catch_sal.pc) | |
1312 | #define CURRENT_EXCEPTION_THROW_SAL (current_exception_event->throw_sal) | |
1313 | #define CURRENT_EXCEPTION_THROW_LINE (current_exception_event->throw_sal.line) | |
1314 | #define CURRENT_EXCEPTION_THROW_FILE (current_exception_event->throw_sal.symtab->filename) | |
1315 | #define CURRENT_EXCEPTION_THROW_PC (current_exception_event->throw_sal.pc) | |
1316 | \f | |
1317 | ||
1318 | /* Given a pc value, return line number it is in. Second arg nonzero means | |
1319 | if pc is on the boundary use the previous statement's line number. */ | |
1320 | ||
1321 | extern struct symtab_and_line | |
1322 | find_pc_line PARAMS ((CORE_ADDR, int)); | |
1323 | ||
1324 | /* Same function, but specify a section as well as an address */ | |
1325 | ||
1326 | extern struct symtab_and_line | |
1327 | find_pc_sect_line PARAMS ((CORE_ADDR, asection *, int)); | |
1328 | ||
1329 | /* Given an address, return the nearest symbol at or below it in memory. | |
1330 | Optionally return the symtab it's from through 2nd arg, and the | |
1331 | address in inferior memory of the symbol through 3rd arg. */ | |
1332 | ||
1333 | extern struct symbol * | |
1334 | find_addr_symbol PARAMS ((CORE_ADDR, struct symtab **, CORE_ADDR *)); | |
1335 | ||
1336 | /* Given a symtab and line number, return the pc there. */ | |
1337 | ||
1338 | extern int | |
1339 | find_line_pc PARAMS ((struct symtab *, int, CORE_ADDR *)); | |
1340 | ||
1341 | extern int | |
1342 | find_line_pc_range PARAMS ((struct symtab_and_line, | |
1343 | CORE_ADDR *, CORE_ADDR *)); | |
1344 | ||
1345 | extern void | |
1346 | resolve_sal_pc PARAMS ((struct symtab_and_line *)); | |
1347 | ||
1348 | /* Given a string, return the line specified by it. For commands like "list" | |
1349 | and "breakpoint". */ | |
1350 | ||
1351 | extern struct symtabs_and_lines | |
1352 | decode_line_spec PARAMS ((char *, int)); | |
1353 | ||
1354 | extern struct symtabs_and_lines | |
1355 | decode_line_spec_1 PARAMS ((char *, int)); | |
1356 | ||
1357 | extern struct symtabs_and_lines | |
1358 | decode_line_1 PARAMS ((char **, int, struct symtab *, int, char ***)); | |
1359 | ||
c906108c SS |
1360 | /* Symmisc.c */ |
1361 | ||
1362 | void | |
1363 | maintenance_print_symbols PARAMS ((char *, int)); | |
1364 | ||
1365 | void | |
1366 | maintenance_print_psymbols PARAMS ((char *, int)); | |
1367 | ||
1368 | void | |
1369 | maintenance_print_msymbols PARAMS ((char *, int)); | |
1370 | ||
1371 | void | |
1372 | maintenance_print_objfiles PARAMS ((char *, int)); | |
1373 | ||
1374 | void | |
1375 | maintenance_check_symtabs PARAMS ((char *, int)); | |
1376 | ||
1377 | /* maint.c */ | |
1378 | ||
1379 | void | |
1380 | maintenance_print_statistics PARAMS ((char *, int)); | |
1381 | ||
c906108c SS |
1382 | extern void |
1383 | free_symtab PARAMS ((struct symtab *)); | |
1384 | ||
1385 | /* Symbol-reading stuff in symfile.c and solib.c. */ | |
1386 | ||
1387 | extern struct symtab * | |
1388 | psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
1389 | ||
1390 | extern void | |
1391 | clear_solib PARAMS ((void)); | |
1392 | ||
1393 | extern struct objfile * | |
1394 | symbol_file_add PARAMS ((char *, int, CORE_ADDR, int, int, int, int, int)); | |
1395 | ||
1396 | /* source.c */ | |
1397 | ||
1398 | extern int | |
1399 | identify_source_line PARAMS ((struct symtab *, int, int, CORE_ADDR)); | |
1400 | ||
1401 | extern void | |
1402 | print_source_lines PARAMS ((struct symtab *, int, int, int)); | |
1403 | ||
1404 | extern void | |
1405 | forget_cached_source_info PARAMS ((void)); | |
1406 | ||
1407 | extern void | |
1408 | select_source_symtab PARAMS ((struct symtab *)); | |
1409 | ||
1410 | extern char **make_symbol_completion_list PARAMS ((char *, char *)); | |
1411 | ||
1412 | extern struct symbol ** | |
1413 | make_symbol_overload_list PARAMS ((struct symbol *)); | |
1414 | ||
1415 | /* symtab.c */ | |
1416 | ||
1417 | extern struct partial_symtab * | |
1418 | find_main_psymtab PARAMS ((void)); | |
1419 | ||
1420 | /* blockframe.c */ | |
1421 | ||
1422 | extern struct blockvector * | |
1423 | blockvector_for_pc PARAMS ((CORE_ADDR, int *)); | |
1424 | ||
1425 | extern struct blockvector * | |
1426 | blockvector_for_pc_sect PARAMS ((CORE_ADDR, asection *, int *, | |
1427 | struct symtab *)); | |
1428 | ||
1429 | /* symfile.c */ | |
1430 | ||
1431 | extern void | |
1432 | clear_symtab_users PARAMS ((void)); | |
1433 | ||
1434 | extern enum language | |
1435 | deduce_language_from_filename PARAMS ((char *)); | |
1436 | ||
1437 | /* symtab.c */ | |
1438 | ||
1439 | extern int | |
1440 | in_prologue PARAMS ((CORE_ADDR pc, CORE_ADDR func_start)); | |
1441 | ||
1442 | extern struct symbol * | |
1443 | fixup_symbol_section PARAMS ((struct symbol *, struct objfile *)); | |
1444 | ||
1445 | /* Symbol searching */ | |
1446 | ||
1447 | /* When using search_symbols, a list of the following structs is returned. | |
1448 | Callers must free the search list using free_symbol_search! */ | |
1449 | struct symbol_search | |
1450 | { | |
1451 | /* The block in which the match was found. Could be, for example, | |
1452 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
1453 | int block; | |
1454 | ||
1455 | /* Information describing what was found. | |
1456 | ||
1457 | If symtab abd symbol are NOT NULL, then information was found | |
1458 | for this match. */ | |
1459 | struct symtab *symtab; | |
1460 | struct symbol *symbol; | |
1461 | ||
1462 | /* If msymbol is non-null, then a match was made on something for | |
1463 | which only minimal_symbols exist. */ | |
1464 | struct minimal_symbol *msymbol; | |
1465 | ||
1466 | /* A link to the next match, or NULL for the end. */ | |
1467 | struct symbol_search *next; | |
1468 | }; | |
1469 | ||
1470 | extern void search_symbols PARAMS ((char *, namespace_enum, int, char **, struct symbol_search **)); | |
1471 | extern void free_search_symbols PARAMS ((struct symbol_search *)); | |
1472 | ||
1473 | #endif /* !defined(SYMTAB_H) */ |