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bd5635a1 | 1 | /* Symbol table definitions for GDB. |
fb155ce3 | 2 | Copyright 1986, 1989, 1991, 1992, 1993, 1994 Free Software Foundation, Inc. |
bd5635a1 RP |
3 | |
4 | This file is part of GDB. | |
5 | ||
4a35d6e9 | 6 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 7 | it under the terms of the GNU General Public License as published by |
4a35d6e9 FF |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
bd5635a1 | 10 | |
4a35d6e9 | 11 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
4a35d6e9 FF |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 RP |
19 | |
20 | #if !defined (SYMTAB_H) | |
21 | #define SYMTAB_H 1 | |
bd5635a1 RP |
22 | |
23 | /* Some definitions and declarations to go with use of obstacks. */ | |
2e4964ad FF |
24 | |
25 | #include "obstack.h" | |
bd5635a1 RP |
26 | #define obstack_chunk_alloc xmalloc |
27 | #define obstack_chunk_free free | |
bd5635a1 | 28 | |
21578747 JG |
29 | /* GNU C supports enums that are bitfields. Some old compilers don't. */ |
30 | #if defined(__GNUC__) && !defined(BYTE_BITFIELD) | |
31 | #define BYTE_BITFIELD :8; | |
32 | #else | |
33 | #define BYTE_BITFIELD /*nothing*/ | |
34 | #endif | |
35 | ||
2e4964ad | 36 | /* Define a structure for the information that is common to all symbol types, |
d63aae7f JK |
37 | including minimal symbols, partial symbols, and full symbols. In a |
38 | multilanguage environment, some language specific information may need to | |
21578747 JG |
39 | be recorded along with each symbol. |
40 | ||
41 | These fields are ordered to encourage good packing, since we frequently | |
42 | have tens or hundreds of thousands of these. */ | |
2e4964ad FF |
43 | |
44 | struct general_symbol_info | |
45 | { | |
46 | /* Name of the symbol. This is a required field. Storage for the name is | |
47 | allocated on the psymbol_obstack or symbol_obstack for the associated | |
48 | objfile. */ | |
49 | ||
50 | char *name; | |
51 | ||
fce30fa1 JK |
52 | /* Value of the symbol. Which member of this union to use, and what |
53 | it means, depends on what kind of symbol this is and its | |
54 | SYMBOL_CLASS. See comments there for more details. All of these | |
55 | are in host byte order (though what they point to might be in | |
56 | target byte order, e.g. LOC_CONST_BYTES). */ | |
2e4964ad FF |
57 | |
58 | union | |
59 | { | |
2e4964ad FF |
60 | long value; |
61 | ||
2e4964ad FF |
62 | struct block *block; |
63 | ||
2e4964ad FF |
64 | char *bytes; |
65 | ||
2e4964ad FF |
66 | CORE_ADDR address; |
67 | ||
68 | /* for opaque typedef struct chain */ | |
bd5635a1 | 69 | |
2e4964ad FF |
70 | struct symbol *chain; |
71 | } | |
72 | value; | |
73 | ||
d63aae7f JK |
74 | /* Since one and only one language can apply, wrap the language specific |
75 | information inside a union. */ | |
2e4964ad | 76 | |
d63aae7f JK |
77 | union |
78 | { | |
79 | struct cplus_specific /* For C++ */ | |
80 | { | |
81 | char *demangled_name; | |
82 | } cplus_specific; | |
83 | struct chill_specific /* For Chill */ | |
2e4964ad | 84 | { |
d63aae7f JK |
85 | char *demangled_name; |
86 | } chill_specific; | |
87 | } language_specific; | |
ca6a826d | 88 | |
21578747 JG |
89 | /* Record the source code language that applies to this symbol. |
90 | This is used to select one of the fields from the language specific | |
91 | union above. */ | |
92 | ||
93 | enum language language BYTE_BITFIELD; | |
94 | ||
ca6a826d PS |
95 | /* Which section is this symbol in? This is an index into |
96 | section_offsets for this objfile. Negative means that the symbol | |
d63aae7f | 97 | does not get relocated relative to a section. |
b86a1b3b JK |
98 | Disclaimer: currently this is just used for xcoff, so don't |
99 | expect all symbol-reading code to set it correctly (the ELF code | |
100 | also tries to set it correctly). */ | |
d63aae7f | 101 | |
fb155ce3 | 102 | short section; |
2e4964ad FF |
103 | }; |
104 | ||
105 | #define SYMBOL_NAME(symbol) (symbol)->ginfo.name | |
106 | #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.value | |
107 | #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address | |
108 | #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes | |
109 | #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block | |
110 | #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain | |
d63aae7f | 111 | #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language |
ca6a826d | 112 | #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section |
ece2e98a JG |
113 | |
114 | #define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \ | |
d63aae7f | 115 | (symbol)->ginfo.language_specific.cplus_specific.demangled_name |
2e4964ad | 116 | |
ece2e98a | 117 | |
2e4964ad FF |
118 | extern int demangle; /* We reference it, so go ahead and declare it. */ |
119 | ||
ece2e98a JG |
120 | /* Macro that initializes the language dependent portion of a symbol |
121 | depending upon the language for the symbol. */ | |
122 | ||
123 | #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \ | |
124 | do { \ | |
125 | SYMBOL_LANGUAGE (symbol) = language; \ | |
126 | if (SYMBOL_LANGUAGE (symbol) == language_cplus) \ | |
127 | { \ | |
128 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
129 | } \ | |
ece2e98a JG |
130 | else if (SYMBOL_LANGUAGE (symbol) == language_chill) \ |
131 | { \ | |
132 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \ | |
133 | } \ | |
ece2e98a JG |
134 | else \ |
135 | { \ | |
d63aae7f JK |
136 | memset (&(symbol)->ginfo.language_specific, 0, \ |
137 | sizeof ((symbol)->ginfo.language_specific)); \ | |
ece2e98a JG |
138 | } \ |
139 | } while (0) | |
140 | ||
141 | /* Macro that attempts to initialize the demangled name for a symbol, | |
142 | based on the language of that symbol. If the language is set to | |
143 | language_auto, it will attempt to find any demangling algorithm | |
144 | that works and then set the language appropriately. If no demangling | |
145 | of any kind is found, the language is set back to language_unknown, | |
146 | so we can avoid doing this work again the next time we encounter | |
147 | the symbol. Any required space to store the name is obtained from the | |
148 | specified obstack. */ | |
149 | ||
150 | #define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \ | |
151 | do { \ | |
152 | char *demangled = NULL; \ | |
153 | if (SYMBOL_LANGUAGE (symbol) == language_cplus \ | |
154 | || SYMBOL_LANGUAGE (symbol) == language_auto) \ | |
155 | { \ | |
156 | demangled = \ | |
157 | cplus_demangle (SYMBOL_NAME (symbol), DMGL_PARAMS | DMGL_ANSI);\ | |
158 | if (demangled != NULL) \ | |
159 | { \ | |
160 | SYMBOL_LANGUAGE (symbol) = language_cplus; \ | |
161 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \ | |
162 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
163 | free (demangled); \ | |
164 | } \ | |
165 | else \ | |
166 | { \ | |
167 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
168 | } \ | |
169 | } \ | |
ece2e98a JG |
170 | if (demangled == NULL \ |
171 | && (SYMBOL_LANGUAGE (symbol) == language_chill \ | |
172 | || SYMBOL_LANGUAGE (symbol) == language_auto)) \ | |
173 | { \ | |
174 | demangled = \ | |
175 | chill_demangle (SYMBOL_NAME (symbol)); \ | |
176 | if (demangled != NULL) \ | |
177 | { \ | |
178 | SYMBOL_LANGUAGE (symbol) = language_chill; \ | |
179 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = \ | |
180 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
181 | free (demangled); \ | |
182 | } \ | |
183 | else \ | |
184 | { \ | |
185 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \ | |
186 | } \ | |
187 | } \ | |
ece2e98a JG |
188 | if (SYMBOL_LANGUAGE (symbol) == language_auto) \ |
189 | { \ | |
190 | SYMBOL_LANGUAGE (symbol) = language_unknown; \ | |
191 | } \ | |
192 | } while (0) | |
193 | ||
194 | /* Macro that returns the demangled name for a symbol based on the language | |
195 | for that symbol. If no demangled name exists, returns NULL. */ | |
196 | ||
ece2e98a JG |
197 | #define SYMBOL_DEMANGLED_NAME(symbol) \ |
198 | (SYMBOL_LANGUAGE (symbol) == language_cplus \ | |
199 | ? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \ | |
200 | : (SYMBOL_LANGUAGE (symbol) == language_chill \ | |
201 | ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) \ | |
202 | : NULL)) | |
203 | ||
5aefc1ca | 204 | #define SYMBOL_CHILL_DEMANGLED_NAME(symbol) \ |
d63aae7f | 205 | (symbol)->ginfo.language_specific.chill_specific.demangled_name |
ece2e98a | 206 | |
2e4964ad FF |
207 | /* Macro that returns the "natural source name" of a symbol. In C++ this is |
208 | the "demangled" form of the name if demangle is on and the "mangled" form | |
209 | of the name if demangle is off. In other languages this is just the | |
ece2e98a | 210 | symbol name. The result should never be NULL. */ |
2e4964ad | 211 | |
ece2e98a JG |
212 | #define SYMBOL_SOURCE_NAME(symbol) \ |
213 | (demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
214 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
215 | : SYMBOL_NAME (symbol)) | |
2e4964ad FF |
216 | |
217 | /* Macro that returns the "natural assembly name" of a symbol. In C++ this is | |
218 | the "mangled" form of the name if demangle is off, or if demangle is on and | |
219 | asm_demangle is off. Otherwise if asm_demangle is on it is the "demangled" | |
ece2e98a JG |
220 | form. In other languages this is just the symbol name. The result should |
221 | never be NULL. */ | |
2e4964ad | 222 | |
ece2e98a JG |
223 | #define SYMBOL_LINKAGE_NAME(symbol) \ |
224 | (demangle && asm_demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
225 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
226 | : SYMBOL_NAME (symbol)) | |
2e4964ad | 227 | |
54023465 JK |
228 | /* From utils.c. */ |
229 | extern int demangle; | |
230 | extern int asm_demangle; | |
231 | ||
2e4964ad FF |
232 | /* Macro that tests a symbol for a match against a specified name string. |
233 | First test the unencoded name, then looks for and test a C++ encoded | |
234 | name if it exists. Note that whitespace is ignored while attempting to | |
235 | match a C++ encoded name, so that "foo::bar(int,long)" is the same as | |
236 | "foo :: bar (int, long)". | |
237 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
238 | ||
ece2e98a JG |
239 | #define SYMBOL_MATCHES_NAME(symbol, name) \ |
240 | (STREQ (SYMBOL_NAME (symbol), (name)) \ | |
241 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
242 | && strcmp_iw (SYMBOL_DEMANGLED_NAME (symbol), (name)) == 0)) | |
2e4964ad FF |
243 | |
244 | /* Macro that tests a symbol for an re-match against the last compiled regular | |
245 | expression. First test the unencoded name, then look for and test a C++ | |
246 | encoded name if it exists. | |
247 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
248 | ||
ece2e98a JG |
249 | #define SYMBOL_MATCHES_REGEXP(symbol) \ |
250 | (re_exec (SYMBOL_NAME (symbol)) != 0 \ | |
251 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
252 | && re_exec (SYMBOL_DEMANGLED_NAME (symbol)) != 0)) | |
2e4964ad | 253 | |
b0246b3b | 254 | /* Define a simple structure used to hold some very basic information about |
2e4964ad FF |
255 | all defined global symbols (text, data, bss, abs, etc). The only required |
256 | information is the general_symbol_info. | |
257 | ||
258 | In many cases, even if a file was compiled with no special options for | |
259 | debugging at all, as long as was not stripped it will contain sufficient | |
260 | information to build a useful minimal symbol table using this structure. | |
261 | Even when a file contains enough debugging information to build a full | |
262 | symbol table, these minimal symbols are still useful for quickly mapping | |
263 | between names and addresses, and vice versa. They are also sometimes | |
264 | used to figure out what full symbol table entries need to be read in. */ | |
bd5635a1 | 265 | |
b0246b3b FF |
266 | struct minimal_symbol |
267 | { | |
bd5635a1 | 268 | |
fce30fa1 JK |
269 | /* The general symbol info required for all types of symbols. |
270 | ||
271 | The SYMBOL_VALUE_ADDRESS contains the address that this symbol | |
272 | corresponds to. */ | |
bd5635a1 | 273 | |
2e4964ad | 274 | struct general_symbol_info ginfo; |
bd5635a1 | 275 | |
b0246b3b FF |
276 | /* The info field is available for caching machine-specific information that |
277 | The AMD 29000 tdep.c uses it to remember things it has decoded from the | |
278 | instructions in the function header, so it doesn't have to rederive the | |
279 | info constantly (over a serial line). It is initialized to zero and | |
280 | stays that way until target-dependent code sets it. Storage for any data | |
281 | pointed to by this field should be allocated on the symbol_obstack for | |
282 | the associated objfile. The type would be "void *" except for reasons | |
283 | of compatibility with older compilers. This field is optional. */ | |
284 | ||
285 | char *info; | |
286 | ||
287 | /* Classification types for this symbol. These should be taken as "advisory | |
288 | only", since if gdb can't easily figure out a classification it simply | |
289 | selects mst_unknown. It may also have to guess when it can't figure out | |
290 | which is a better match between two types (mst_data versus mst_bss) for | |
291 | example. Since the minimal symbol info is sometimes derived from the | |
292 | BFD library's view of a file, we need to live with what information bfd | |
293 | supplies. */ | |
294 | ||
295 | enum minimal_symbol_type | |
bd5635a1 | 296 | { |
b0246b3b FF |
297 | mst_unknown = 0, /* Unknown type, the default */ |
298 | mst_text, /* Generally executable instructions */ | |
299 | mst_data, /* Generally initialized data */ | |
300 | mst_bss, /* Generally uninitialized data */ | |
313dd520 JK |
301 | mst_abs, /* Generally absolute (nonrelocatable) */ |
302 | /* For the mst_file* types, the names are only guaranteed to be unique | |
303 | within a given .o file. */ | |
304 | mst_file_text, /* Static version of mst_text */ | |
305 | mst_file_data, /* Static version of mst_data */ | |
306 | mst_file_bss /* Static version of mst_bss */ | |
21578747 | 307 | } type BYTE_BITFIELD; |
d018c8a6 | 308 | |
bd5635a1 | 309 | }; |
7e258d18 | 310 | |
2e4964ad FF |
311 | #define MSYMBOL_INFO(msymbol) (msymbol)->info |
312 | #define MSYMBOL_TYPE(msymbol) (msymbol)->type | |
313 | ||
bd5635a1 RP |
314 | \f |
315 | /* All of the name-scope contours of the program | |
316 | are represented by `struct block' objects. | |
317 | All of these objects are pointed to by the blockvector. | |
318 | ||
319 | Each block represents one name scope. | |
320 | Each lexical context has its own block. | |
321 | ||
0b28c260 JK |
322 | The blockvector begins with some special blocks. |
323 | The GLOBAL_BLOCK contains all the symbols defined in this compilation | |
bd5635a1 | 324 | whose scope is the entire program linked together. |
0b28c260 | 325 | The STATIC_BLOCK contains all the symbols whose scope is the |
bd5635a1 | 326 | entire compilation excluding other separate compilations. |
0b28c260 | 327 | Blocks starting with the FIRST_LOCAL_BLOCK are not special. |
bd5635a1 RP |
328 | |
329 | Each block records a range of core addresses for the code that | |
0b28c260 | 330 | is in the scope of the block. The STATIC_BLOCK and GLOBAL_BLOCK |
bd5635a1 RP |
331 | give, for the range of code, the entire range of code produced |
332 | by the compilation that the symbol segment belongs to. | |
333 | ||
334 | The blocks appear in the blockvector | |
335 | in order of increasing starting-address, | |
336 | and, within that, in order of decreasing ending-address. | |
337 | ||
338 | This implies that within the body of one function | |
339 | the blocks appear in the order of a depth-first tree walk. */ | |
340 | ||
341 | struct blockvector | |
342 | { | |
343 | /* Number of blocks in the list. */ | |
344 | int nblocks; | |
345 | /* The blocks themselves. */ | |
346 | struct block *block[1]; | |
347 | }; | |
348 | ||
2e4964ad FF |
349 | #define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks |
350 | #define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n] | |
351 | ||
92a29b47 | 352 | /* Special block numbers */ |
2e4964ad FF |
353 | |
354 | #define GLOBAL_BLOCK 0 | |
355 | #define STATIC_BLOCK 1 | |
92a29b47 JG |
356 | #define FIRST_LOCAL_BLOCK 2 |
357 | ||
bd5635a1 RP |
358 | struct block |
359 | { | |
2e4964ad | 360 | |
0b28c260 | 361 | /* Addresses in the executable code that are in this block. */ |
2e4964ad FF |
362 | |
363 | CORE_ADDR startaddr; | |
364 | CORE_ADDR endaddr; | |
365 | ||
0b28c260 JK |
366 | /* The symbol that names this block, if the block is the body of a |
367 | function; otherwise, zero. */ | |
2e4964ad | 368 | |
bd5635a1 | 369 | struct symbol *function; |
2e4964ad FF |
370 | |
371 | /* The `struct block' for the containing block, or 0 if none. | |
0b28c260 JK |
372 | |
373 | The superblock of a top-level local block (i.e. a function in the | |
374 | case of C) is the STATIC_BLOCK. The superblock of the | |
375 | STATIC_BLOCK is the GLOBAL_BLOCK. */ | |
2e4964ad | 376 | |
bd5635a1 | 377 | struct block *superblock; |
2e4964ad | 378 | |
0b28c260 JK |
379 | /* Version of GCC used to compile the function corresponding |
380 | to this block, or 0 if not compiled with GCC. When possible, | |
381 | GCC should be compatible with the native compiler, or if that | |
382 | is not feasible, the differences should be fixed during symbol | |
383 | reading. As of 16 Apr 93, this flag is never used to distinguish | |
384 | between gcc2 and the native compiler. | |
385 | ||
386 | If there is no function corresponding to this block, this meaning | |
387 | of this flag is undefined. */ | |
2e4964ad | 388 | |
bd5635a1 | 389 | unsigned char gcc_compile_flag; |
2e4964ad | 390 | |
bd5635a1 | 391 | /* Number of local symbols. */ |
2e4964ad | 392 | |
bd5635a1 | 393 | int nsyms; |
2e4964ad | 394 | |
54023465 JK |
395 | /* The symbols. If some of them are arguments, then they must be |
396 | in the order in which we would like to print them. */ | |
2e4964ad | 397 | |
bd5635a1 RP |
398 | struct symbol *sym[1]; |
399 | }; | |
bd5635a1 | 400 | |
2e4964ad FF |
401 | #define BLOCK_START(bl) (bl)->startaddr |
402 | #define BLOCK_END(bl) (bl)->endaddr | |
403 | #define BLOCK_NSYMS(bl) (bl)->nsyms | |
404 | #define BLOCK_SYM(bl, n) (bl)->sym[n] | |
405 | #define BLOCK_FUNCTION(bl) (bl)->function | |
406 | #define BLOCK_SUPERBLOCK(bl) (bl)->superblock | |
407 | #define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag | |
bd5635a1 | 408 | |
54023465 JK |
409 | /* Nonzero if symbols of block BL should be sorted alphabetically. |
410 | Don't sort a block which corresponds to a function. If we did the | |
411 | sorting would have to preserve the order of the symbols for the | |
412 | arguments. */ | |
bd5635a1 | 413 | |
54023465 | 414 | #define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40 && BLOCK_FUNCTION (bl) == NULL) |
bd5635a1 | 415 | |
2e4964ad FF |
416 | \f |
417 | /* Represent one symbol name; a variable, constant, function or typedef. */ | |
bd5635a1 | 418 | |
2e4964ad FF |
419 | /* Different name spaces for symbols. Looking up a symbol specifies a |
420 | namespace and ignores symbol definitions in other name spaces. */ | |
421 | ||
bd5635a1 RP |
422 | enum namespace |
423 | { | |
2e4964ad FF |
424 | /* UNDEF_NAMESPACE is used when a namespace has not been discovered or |
425 | none of the following apply. This usually indicates an error either | |
426 | in the symbol information or in gdb's handling of symbols. */ | |
427 | ||
428 | UNDEF_NAMESPACE, | |
429 | ||
430 | /* VAR_NAMESPACE is the usual namespace. In C, this contains variables, | |
431 | function names, typedef names and enum type values. */ | |
432 | ||
433 | VAR_NAMESPACE, | |
434 | ||
435 | /* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names. | |
436 | Thus, if `struct foo' is used in a C program, it produces a symbol named | |
437 | `foo' in the STRUCT_NAMESPACE. */ | |
438 | ||
439 | STRUCT_NAMESPACE, | |
440 | ||
441 | /* LABEL_NAMESPACE may be used for names of labels (for gotos); | |
442 | currently it is not used and labels are not recorded at all. */ | |
443 | ||
444 | LABEL_NAMESPACE | |
bd5635a1 RP |
445 | }; |
446 | ||
447 | /* An address-class says where to find the value of a symbol. */ | |
448 | ||
449 | enum address_class | |
450 | { | |
2e4964ad FF |
451 | /* Not used; catches errors */ |
452 | ||
453 | LOC_UNDEF, | |
454 | ||
455 | /* Value is constant int SYMBOL_VALUE, host byteorder */ | |
456 | ||
457 | LOC_CONST, | |
458 | ||
459 | /* Value is at fixed address SYMBOL_VALUE_ADDRESS */ | |
460 | ||
461 | LOC_STATIC, | |
462 | ||
fce30fa1 | 463 | /* Value is in register. SYMBOL_VALUE is the register number. */ |
2e4964ad FF |
464 | |
465 | LOC_REGISTER, | |
466 | ||
fce30fa1 | 467 | /* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */ |
2e4964ad FF |
468 | |
469 | LOC_ARG, | |
470 | ||
5afa2040 | 471 | /* Value address is at SYMBOL_VALUE offset in arglist. */ |
2e4964ad FF |
472 | |
473 | LOC_REF_ARG, | |
474 | ||
fce30fa1 JK |
475 | /* Value is in register number SYMBOL_VALUE. Just like LOC_REGISTER |
476 | except this is an argument. Probably the cleaner way to handle | |
477 | this would be to separate address_class (which would include | |
478 | separate ARG and LOCAL to deal with FRAME_ARGS_ADDRESS versus | |
479 | FRAME_LOCALS_ADDRESS), and an is_argument flag. | |
0b28c260 JK |
480 | |
481 | For some symbol formats (stabs, for some compilers at least), | |
5afa2040 JK |
482 | the compiler generates two symbols, an argument and a register. |
483 | In some cases we combine them to a single LOC_REGPARM in symbol | |
9c5c2722 JK |
484 | reading, but currently not for all cases (e.g. it's passed on the |
485 | stack and then loaded into a register). */ | |
2e4964ad FF |
486 | |
487 | LOC_REGPARM, | |
488 | ||
5afa2040 JK |
489 | /* Value is in specified register. Just like LOC_REGPARM except the |
490 | register holds the address of the argument instead of the argument | |
491 | itself. This is currently used for the passing of structs and unions | |
b9298844 JK |
492 | on sparc and hppa. It is also used for call by reference where the |
493 | address is in a register, at least by mipsread.c. */ | |
5afa2040 JK |
494 | |
495 | LOC_REGPARM_ADDR, | |
496 | ||
fce30fa1 | 497 | /* Value is a local variable at SYMBOL_VALUE offset in stack frame. */ |
2e4964ad FF |
498 | |
499 | LOC_LOCAL, | |
500 | ||
501 | /* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace | |
502 | STRUCT_NAMESPACE all have this class. */ | |
503 | ||
504 | LOC_TYPEDEF, | |
505 | ||
506 | /* Value is address SYMBOL_VALUE_ADDRESS in the code */ | |
507 | ||
508 | LOC_LABEL, | |
509 | ||
fce30fa1 JK |
510 | /* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'. |
511 | In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address | |
512 | of the block. Function names have this class. */ | |
2e4964ad FF |
513 | |
514 | LOC_BLOCK, | |
515 | ||
ca6a826d | 516 | /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in |
2e4964ad FF |
517 | target byte order. */ |
518 | ||
519 | LOC_CONST_BYTES, | |
520 | ||
fce30fa1 JK |
521 | /* Value is arg at SYMBOL_VALUE offset in stack frame. Differs from |
522 | LOC_LOCAL in that symbol is an argument; differs from LOC_ARG in | |
523 | that we find it in the frame (FRAME_LOCALS_ADDRESS), not in the | |
524 | arglist (FRAME_ARGS_ADDRESS). Added for i960, which passes args | |
525 | in regs then copies to frame. */ | |
2e4964ad | 526 | |
ca6a826d PS |
527 | LOC_LOCAL_ARG, |
528 | ||
a1c8d76e JK |
529 | /* Value is at SYMBOL_VALUE offset from the current value of |
530 | register number SYMBOL_BASEREG. This exists mainly for the same | |
531 | things that LOC_LOCAL and LOC_ARG do; but we need to do this | |
532 | instead because on 88k DWARF gives us the offset from the | |
533 | frame/stack pointer, rather than the offset from the "canonical | |
534 | frame address" used by COFF, stabs, etc., and we don't know how | |
535 | to convert between these until we start examining prologues. | |
536 | ||
c438b3af JK |
537 | Note that LOC_BASEREG is much less general than a DWARF expression. |
538 | We don't need the generality (at least not yet), and storing a general | |
539 | DWARF expression would presumably take up more space than the existing | |
540 | scheme. */ | |
a1c8d76e JK |
541 | |
542 | LOC_BASEREG, | |
543 | ||
544 | /* Same as LOC_BASEREG but it is an argument. */ | |
545 | ||
546 | LOC_BASEREG_ARG, | |
547 | ||
ca6a826d | 548 | /* The variable does not actually exist in the program. |
fce30fa1 | 549 | The value is ignored. */ |
2e4964ad | 550 | |
ca6a826d | 551 | LOC_OPTIMIZED_OUT |
bd5635a1 RP |
552 | }; |
553 | ||
554 | struct symbol | |
555 | { | |
2e4964ad FF |
556 | |
557 | /* The general symbol info required for all types of symbols. */ | |
558 | ||
559 | struct general_symbol_info ginfo; | |
560 | ||
21578747 | 561 | /* Data type of value */ |
2e4964ad | 562 | |
21578747 | 563 | struct type *type; |
2e4964ad | 564 | |
21578747 | 565 | /* Name space code. */ |
2e4964ad | 566 | |
21578747 | 567 | enum namespace namespace BYTE_BITFIELD; |
2e4964ad | 568 | |
21578747 | 569 | /* Address class */ |
2e4964ad | 570 | |
21578747 | 571 | enum address_class class BYTE_BITFIELD; |
bd5635a1 | 572 | |
2e4964ad FF |
573 | /* Line number of definition. FIXME: Should we really make the assumption |
574 | that nobody will try to debug files longer than 64K lines? What about | |
575 | machine generated programs? */ | |
576 | ||
bd5635a1 RP |
577 | unsigned short line; |
578 | ||
252f6c65 FF |
579 | /* Some symbols require an additional value to be recorded on a per- |
580 | symbol basis. Stash those values here. */ | |
2e4964ad | 581 | |
252f6c65 FF |
582 | union |
583 | { | |
a1c8d76e JK |
584 | /* Used by LOC_BASEREG and LOC_BASEREG_ARG. */ |
585 | short basereg; | |
252f6c65 FF |
586 | } |
587 | aux_value; | |
bd5635a1 RP |
588 | }; |
589 | ||
2e4964ad FF |
590 | #define SYMBOL_NAMESPACE(symbol) (symbol)->namespace |
591 | #define SYMBOL_CLASS(symbol) (symbol)->class | |
592 | #define SYMBOL_TYPE(symbol) (symbol)->type | |
593 | #define SYMBOL_LINE(symbol) (symbol)->line | |
a1c8d76e | 594 | #define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg |
2e4964ad | 595 | \f |
bd5635a1 RP |
596 | /* A partial_symbol records the name, namespace, and address class of |
597 | symbols whose types we have not parsed yet. For functions, it also | |
598 | contains their memory address, so we can find them from a PC value. | |
599 | Each partial_symbol sits in a partial_symtab, all of which are chained | |
b0246b3b | 600 | on a partial symtab list and which points to the corresponding |
bd5635a1 RP |
601 | normal symtab once the partial_symtab has been referenced. */ |
602 | ||
603 | struct partial_symbol | |
604 | { | |
2e4964ad FF |
605 | |
606 | /* The general symbol info required for all types of symbols. */ | |
607 | ||
608 | struct general_symbol_info ginfo; | |
609 | ||
bd5635a1 | 610 | /* Name space code. */ |
2e4964ad | 611 | |
21578747 | 612 | enum namespace namespace BYTE_BITFIELD; |
2e4964ad | 613 | |
bd5635a1 | 614 | /* Address class (for info_symbols) */ |
2e4964ad | 615 | |
21578747 | 616 | enum address_class class BYTE_BITFIELD; |
2e4964ad | 617 | |
bd5635a1 | 618 | }; |
2e4964ad FF |
619 | |
620 | #define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace | |
621 | #define PSYMBOL_CLASS(psymbol) (psymbol)->class | |
622 | ||
bd5635a1 | 623 | \f |
2e4964ad FF |
624 | /* Source-file information. This describes the relation between source files, |
625 | ine numbers and addresses in the program text. */ | |
bd5635a1 RP |
626 | |
627 | struct sourcevector | |
628 | { | |
629 | int length; /* Number of source files described */ | |
630 | struct source *source[1]; /* Descriptions of the files */ | |
631 | }; | |
632 | ||
633 | /* Each item represents a line-->pc (or the reverse) mapping. This is | |
634 | somewhat more wasteful of space than one might wish, but since only | |
635 | the files which are actually debugged are read in to core, we don't | |
ece2e98a | 636 | waste much space. */ |
bd5635a1 RP |
637 | |
638 | struct linetable_entry | |
639 | { | |
640 | int line; | |
641 | CORE_ADDR pc; | |
642 | }; | |
643 | ||
c438b3af JK |
644 | /* The order of entries in the linetable is significant. They should |
645 | be sorted by increasing values of the pc field. If there is more than | |
646 | one entry for a given pc, then I'm not sure what should happen (and | |
647 | I not sure whether we currently handle it the best way). | |
b9298844 | 648 | |
c438b3af | 649 | Example: a C for statement generally looks like this |
b9298844 JK |
650 | |
651 | 10 0x100 - for the init/test part of a for stmt. | |
652 | 20 0x200 | |
653 | 30 0x300 | |
654 | 10 0x400 - for the increment part of a for stmt. | |
655 | ||
c438b3af | 656 | */ |
b9298844 | 657 | |
bd5635a1 RP |
658 | struct linetable |
659 | { | |
660 | int nitems; | |
c438b3af JK |
661 | |
662 | /* Actually NITEMS elements. If you don't like this use of the | |
663 | `struct hack', you can shove it up your ANSI (seriously, if the | |
664 | committee tells us how to do it, we can probably go along). */ | |
bd5635a1 RP |
665 | struct linetable_entry item[1]; |
666 | }; | |
667 | ||
668 | /* All the information on one source file. */ | |
669 | ||
670 | struct source | |
671 | { | |
672 | char *name; /* Name of file */ | |
673 | struct linetable contents; | |
674 | }; | |
675 | ||
2670f34d JG |
676 | /* How to relocate the symbols from each section in a symbol file. |
677 | Each struct contains an array of offsets. | |
678 | The ordering and meaning of the offsets is file-type-dependent; | |
679 | typically it is indexed by section numbers or symbol types or | |
680 | something like that. | |
681 | ||
682 | To give us flexibility in changing the internal representation | |
683 | of these offsets, the ANOFFSET macro must be used to insert and | |
684 | extract offset values in the struct. */ | |
685 | ||
686 | struct section_offsets | |
687 | { | |
688 | CORE_ADDR offsets[1]; /* As many as needed. */ | |
689 | }; | |
690 | ||
691 | #define ANOFFSET(secoff, whichone) (secoff->offsets[whichone]) | |
692 | ||
b86a1b3b | 693 | /* Each source file or header is represented by a struct symtab. |
bd5635a1 RP |
694 | These objects are chained through the `next' field. */ |
695 | ||
696 | struct symtab | |
697 | { | |
2e4964ad | 698 | |
bd5635a1 | 699 | /* Chain of all existing symtabs. */ |
2e4964ad | 700 | |
bd5635a1 | 701 | struct symtab *next; |
2e4964ad | 702 | |
b86a1b3b JK |
703 | /* List of all symbol scope blocks for this symtab. May be shared |
704 | between different symtabs (and normally is for all the symtabs | |
705 | in a given compilation unit). */ | |
2e4964ad | 706 | |
bd5635a1 | 707 | struct blockvector *blockvector; |
2e4964ad | 708 | |
4137c5fc | 709 | /* Table mapping core addresses to line numbers for this file. |
b86a1b3b | 710 | Can be NULL if none. Never shared between different symtabs. */ |
2e4964ad | 711 | |
bd5635a1 | 712 | struct linetable *linetable; |
2e4964ad | 713 | |
ca6a826d PS |
714 | /* Section in objfile->section_offsets for the blockvector and |
715 | the linetable. */ | |
716 | ||
717 | int block_line_section; | |
718 | ||
719 | /* If several symtabs share a blockvector, exactly one of them | |
720 | should be designed the primary, so that the blockvector | |
721 | is relocated exactly once by objfile_relocate. */ | |
722 | ||
723 | int primary; | |
724 | ||
bd5635a1 | 725 | /* Name of this source file. */ |
2e4964ad | 726 | |
bd5635a1 | 727 | char *filename; |
2e4964ad | 728 | |
bd5635a1 | 729 | /* Directory in which it was compiled, or NULL if we don't know. */ |
2e4964ad | 730 | |
bd5635a1 | 731 | char *dirname; |
2e4964ad | 732 | |
bd5635a1 RP |
733 | /* This component says how to free the data we point to: |
734 | free_contents => do a tree walk and free each object. | |
735 | free_nothing => do nothing; some other symtab will free | |
736 | the data this one uses. | |
b86a1b3b JK |
737 | free_linetable => free just the linetable. FIXME: Is this redundant |
738 | with the primary field? */ | |
2e4964ad FF |
739 | |
740 | enum free_code | |
741 | { | |
742 | free_nothing, free_contents, free_linetable | |
743 | } | |
744 | free_code; | |
745 | ||
bd5635a1 RP |
746 | /* Pointer to one block of storage to be freed, if nonzero. */ |
747 | /* This is IN ADDITION to the action indicated by free_code. */ | |
2e4964ad | 748 | |
bd5635a1 | 749 | char *free_ptr; |
2e4964ad | 750 | |
bd5635a1 | 751 | /* Total number of lines found in source file. */ |
2e4964ad | 752 | |
bd5635a1 | 753 | int nlines; |
2e4964ad | 754 | |
025abdfb JK |
755 | /* line_charpos[N] is the position of the (N-1)th line of the |
756 | source file. "position" means something we can lseek() to; it | |
757 | is not guaranteed to be useful any other way. */ | |
2e4964ad | 758 | |
bd5635a1 | 759 | int *line_charpos; |
2e4964ad | 760 | |
bd5635a1 | 761 | /* Language of this source file. */ |
2e4964ad | 762 | |
bd5635a1 | 763 | enum language language; |
2e4964ad | 764 | |
bd5635a1 | 765 | /* String of version information. May be zero. */ |
2e4964ad | 766 | |
bd5635a1 | 767 | char *version; |
2e4964ad | 768 | |
bd5635a1 | 769 | /* Full name of file as found by searching the source path. |
2e4964ad FF |
770 | NULL if not yet known. */ |
771 | ||
bd5635a1 | 772 | char *fullname; |
8aa13b87 | 773 | |
a048c8f5 | 774 | /* Object file from which this symbol information was read. */ |
2e4964ad | 775 | |
a048c8f5 | 776 | struct objfile *objfile; |
a048c8f5 | 777 | |
8aa13b87 JK |
778 | /* Anything extra for this symtab. This is for target machines |
779 | with special debugging info of some sort (which cannot just | |
780 | be represented in a normal symtab). */ | |
2e4964ad | 781 | |
8aa13b87 JK |
782 | #if defined (EXTRA_SYMTAB_INFO) |
783 | EXTRA_SYMTAB_INFO | |
784 | #endif | |
2e4964ad | 785 | |
bd5635a1 RP |
786 | }; |
787 | ||
2e4964ad FF |
788 | #define BLOCKVECTOR(symtab) (symtab)->blockvector |
789 | #define LINETABLE(symtab) (symtab)->linetable | |
790 | ||
791 | \f | |
bd5635a1 RP |
792 | /* Each source file that has not been fully read in is represented by |
793 | a partial_symtab. This contains the information on where in the | |
794 | executable the debugging symbols for a specific file are, and a | |
795 | list of names of global symbols which are located in this file. | |
b0246b3b | 796 | They are all chained on partial symtab lists. |
bd5635a1 RP |
797 | |
798 | Even after the source file has been read into a symtab, the | |
799 | partial_symtab remains around. They are allocated on an obstack, | |
800 | psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks- | |
801 | style execution of a bunch of .o's. */ | |
b0246b3b | 802 | |
bd5635a1 RP |
803 | struct partial_symtab |
804 | { | |
2e4964ad | 805 | |
bd5635a1 | 806 | /* Chain of all existing partial symtabs. */ |
2e4964ad | 807 | |
bd5635a1 | 808 | struct partial_symtab *next; |
2e4964ad | 809 | |
bd5635a1 | 810 | /* Name of the source file which this partial_symtab defines */ |
2e4964ad | 811 | |
bd5635a1 RP |
812 | char *filename; |
813 | ||
a048c8f5 | 814 | /* Information about the object file from which symbols should be read. */ |
2e4964ad | 815 | |
a048c8f5 | 816 | struct objfile *objfile; |
a048c8f5 | 817 | |
2670f34d | 818 | /* Set of relocation offsets to apply to each section. */ |
2e4964ad | 819 | |
2670f34d JG |
820 | struct section_offsets *section_offsets; |
821 | ||
bd5635a1 RP |
822 | /* Range of text addresses covered by this file; texthigh is the |
823 | beginning of the next section. */ | |
2e4964ad FF |
824 | |
825 | CORE_ADDR textlow; | |
826 | CORE_ADDR texthigh; | |
827 | ||
bd5635a1 RP |
828 | /* Array of pointers to all of the partial_symtab's which this one |
829 | depends on. Since this array can only be set to previous or | |
830 | the current (?) psymtab, this dependency tree is guaranteed not | |
d63aae7f JK |
831 | to have any loops. "depends on" means that symbols must be read |
832 | for the dependencies before being read for this psymtab; this is | |
833 | for type references in stabs, where if foo.c includes foo.h, declarations | |
834 | in foo.h may use type numbers defined in foo.c. For other debugging | |
835 | formats there may be no need to use dependencies. */ | |
2e4964ad | 836 | |
bd5635a1 | 837 | struct partial_symtab **dependencies; |
2e4964ad | 838 | |
bd5635a1 | 839 | int number_of_dependencies; |
2e4964ad | 840 | |
bd5635a1 RP |
841 | /* Global symbol list. This list will be sorted after readin to |
842 | improve access. Binary search will be the usual method of | |
843 | finding a symbol within it. globals_offset is an integer offset | |
4a35d6e9 | 844 | within global_psymbols[]. */ |
2e4964ad FF |
845 | |
846 | int globals_offset; | |
847 | int n_global_syms; | |
848 | ||
bd5635a1 RP |
849 | /* Static symbol list. This list will *not* be sorted after readin; |
850 | to find a symbol in it, exhaustive search must be used. This is | |
851 | reasonable because searches through this list will eventually | |
852 | lead to either the read in of a files symbols for real (assumed | |
853 | to take a *lot* of time; check) or an error (and we don't care | |
4a35d6e9 FF |
854 | how long errors take). This is an offset and size within |
855 | static_psymbols[]. */ | |
2e4964ad FF |
856 | |
857 | int statics_offset; | |
858 | int n_static_syms; | |
859 | ||
bd5635a1 RP |
860 | /* Pointer to symtab eventually allocated for this source file, 0 if |
861 | !readin or if we haven't looked for the symtab after it was readin. */ | |
2e4964ad | 862 | |
bd5635a1 | 863 | struct symtab *symtab; |
2e4964ad | 864 | |
bd5635a1 RP |
865 | /* Pointer to function which will read in the symtab corresponding to |
866 | this psymtab. */ | |
2e4964ad | 867 | |
b0246b3b | 868 | void (*read_symtab) PARAMS ((struct partial_symtab *)); |
2e4964ad | 869 | |
4a35d6e9 FF |
870 | /* Information that lets read_symtab() locate the part of the symbol table |
871 | that this psymtab corresponds to. This information is private to the | |
872 | format-dependent symbol reading routines. For further detail examine | |
873 | the various symbol reading modules. Should really be (void *) but is | |
874 | (char *) as with other such gdb variables. (FIXME) */ | |
2e4964ad | 875 | |
4a35d6e9 | 876 | char *read_symtab_private; |
2e4964ad FF |
877 | |
878 | /* Non-zero if the symtab corresponding to this psymtab has been readin */ | |
879 | ||
bd5635a1 RP |
880 | unsigned char readin; |
881 | }; | |
882 | ||
883 | /* A fast way to get from a psymtab to its symtab (after the first time). */ | |
2e4964ad FF |
884 | #define PSYMTAB_TO_SYMTAB(pst) \ |
885 | ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst)) | |
bd5635a1 | 886 | |
bd5635a1 | 887 | \f |
2e4964ad FF |
888 | /* The virtual function table is now an array of structures which have the |
889 | form { int16 offset, delta; void *pfn; }. | |
aec4cb91 | 890 | |
ea9cdf62 JK |
891 | In normal virtual function tables, OFFSET is unused. |
892 | DELTA is the amount which is added to the apparent object's base | |
893 | address in order to point to the actual object to which the | |
894 | virtual function should be applied. | |
0b28c260 JK |
895 | PFN is a pointer to the virtual function. |
896 | ||
897 | Note that this macro is g++ specific (FIXME). */ | |
bd5635a1 RP |
898 | |
899 | #define VTBL_FNADDR_OFFSET 2 | |
ea9cdf62 | 900 | |
2e4964ad FF |
901 | /* Macro that yields non-zero value iff NAME is the prefix for C++ operator |
902 | names. If you leave out the parenthesis here you will lose! | |
ea9cdf62 | 903 | Currently 'o' 'p' CPLUS_MARKER is used for both the symbol in the |
0b28c260 JK |
904 | symbol-file and the names in gdb's symbol table. |
905 | Note that this macro is g++ specific (FIXME). */ | |
ea9cdf62 | 906 | |
2e4964ad FF |
907 | #define OPNAME_PREFIX_P(NAME) \ |
908 | ((NAME)[0] == 'o' && (NAME)[1] == 'p' && (NAME)[2] == CPLUS_MARKER) | |
909 | ||
ca6a826d | 910 | /* Macro that yields non-zero value iff NAME is the prefix for C++ vtbl |
0b28c260 | 911 | names. Note that this macro is g++ specific (FIXME). */ |
ca6a826d | 912 | |
2e4964ad FF |
913 | #define VTBL_PREFIX_P(NAME) \ |
914 | ((NAME)[3] == CPLUS_MARKER && !strncmp ((NAME), "_vt", 3)) | |
915 | ||
ca6a826d | 916 | /* Macro that yields non-zero value iff NAME is the prefix for C++ destructor |
0b28c260 | 917 | names. Note that this macro is g++ specific (FIXME). */ |
ca6a826d PS |
918 | |
919 | #define DESTRUCTOR_PREFIX_P(NAME) \ | |
920 | ((NAME)[0] == '_' && (NAME)[1] == CPLUS_MARKER && (NAME)[2] == '_') | |
921 | ||
bd5635a1 | 922 | \f |
2e4964ad FF |
923 | /* External variables and functions for the objects described above. */ |
924 | ||
925 | /* This symtab variable specifies the current file for printing source lines */ | |
926 | ||
927 | extern struct symtab *current_source_symtab; | |
928 | ||
929 | /* This is the next line to print for listing source lines. */ | |
930 | ||
931 | extern int current_source_line; | |
932 | ||
933 | /* See the comment in symfile.c about how current_objfile is used. */ | |
934 | ||
935 | extern struct objfile *current_objfile; | |
bd5635a1 | 936 | |
b0246b3b FF |
937 | extern struct symtab * |
938 | lookup_symtab PARAMS ((char *)); | |
939 | ||
940 | extern struct symbol * | |
941 | lookup_symbol PARAMS ((const char *, const struct block *, | |
942 | const enum namespace, int *, struct symtab **)); | |
943 | ||
944 | extern struct symbol * | |
945 | lookup_block_symbol PARAMS ((const struct block *, const char *, | |
946 | const enum namespace)); | |
947 | ||
948 | extern struct type * | |
949 | lookup_struct PARAMS ((char *, struct block *)); | |
950 | ||
951 | extern struct type * | |
952 | lookup_union PARAMS ((char *, struct block *)); | |
953 | ||
954 | extern struct type * | |
955 | lookup_enum PARAMS ((char *, struct block *)); | |
956 | ||
957 | extern struct symbol * | |
958 | block_function PARAMS ((struct block *)); | |
959 | ||
960 | extern struct symbol * | |
961 | find_pc_function PARAMS ((CORE_ADDR)); | |
962 | ||
f1ed4330 JK |
963 | extern int find_pc_partial_function |
964 | PARAMS ((CORE_ADDR, char **, CORE_ADDR *, CORE_ADDR *)); | |
b0246b3b FF |
965 | |
966 | extern void | |
967 | clear_pc_function_cache PARAMS ((void)); | |
968 | ||
969 | extern struct partial_symtab * | |
970 | lookup_partial_symtab PARAMS ((char *)); | |
971 | ||
972 | extern struct partial_symtab * | |
973 | find_pc_psymtab PARAMS ((CORE_ADDR)); | |
974 | ||
975 | extern struct symtab * | |
976 | find_pc_symtab PARAMS ((CORE_ADDR)); | |
977 | ||
978 | extern struct partial_symbol * | |
979 | find_pc_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR)); | |
980 | ||
981 | extern int | |
982 | find_pc_line_pc_range PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *)); | |
983 | ||
984 | extern int | |
985 | contained_in PARAMS ((struct block *, struct block *)); | |
986 | ||
987 | extern void | |
988 | reread_symbols PARAMS ((void)); | |
989 | ||
404f69a8 JK |
990 | /* Macro for name of symbol to indicate a file compiled with gcc. */ |
991 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
992 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
993 | #endif | |
994 | ||
995 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ | |
996 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
997 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
998 | #endif | |
999 | ||
b0246b3b FF |
1000 | /* Functions for dealing with the minimal symbol table, really a misc |
1001 | address<->symbol mapping for things we don't have debug symbols for. */ | |
1002 | ||
21578747 JG |
1003 | extern void prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR, |
1004 | enum minimal_symbol_type, | |
1005 | struct objfile *)); | |
b0246b3b | 1006 | |
21578747 JG |
1007 | extern void prim_record_minimal_symbol_and_info |
1008 | PARAMS ((const char *, CORE_ADDR, | |
1009 | enum minimal_symbol_type, | |
1010 | char *info, int section, | |
1011 | struct objfile *)); | |
51b57ded | 1012 | |
b0246b3b FF |
1013 | extern struct minimal_symbol * |
1014 | lookup_minimal_symbol PARAMS ((const char *, struct objfile *)); | |
1015 | ||
1016 | extern struct minimal_symbol * | |
1017 | lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR)); | |
1018 | ||
b0246b3b FF |
1019 | extern void |
1020 | init_minimal_symbol_collection PARAMS ((void)); | |
1021 | ||
1022 | extern void | |
1023 | discard_minimal_symbols PARAMS ((int)); | |
1024 | ||
1025 | extern void | |
1026 | install_minimal_symbols PARAMS ((struct objfile *)); | |
bd5635a1 RP |
1027 | |
1028 | struct symtab_and_line | |
1029 | { | |
1030 | struct symtab *symtab; | |
025abdfb JK |
1031 | |
1032 | /* Line number. Line numbers start at 1 and proceed through symtab->nlines. | |
1033 | 0 is never a valid line number; it is used to indicate that line number | |
1034 | information is not available. */ | |
bd5635a1 | 1035 | int line; |
025abdfb | 1036 | |
bd5635a1 RP |
1037 | CORE_ADDR pc; |
1038 | CORE_ADDR end; | |
1039 | }; | |
1040 | ||
1041 | struct symtabs_and_lines | |
1042 | { | |
1043 | struct symtab_and_line *sals; | |
1044 | int nelts; | |
1045 | }; | |
1046 | ||
2e4964ad FF |
1047 | /* Given a pc value, return line number it is in. Second arg nonzero means |
1048 | if pc is on the boundary use the previous statement's line number. */ | |
bd5635a1 | 1049 | |
b0246b3b FF |
1050 | extern struct symtab_and_line |
1051 | find_pc_line PARAMS ((CORE_ADDR, int)); | |
bd5635a1 | 1052 | |
fb155ce3 JK |
1053 | /* Given an address, return the nearest symbol at or below it in memory. |
1054 | Optionally return the symtab it's from through 2nd arg, and the | |
1055 | address in inferior memory of the symbol through 3rd arg. */ | |
1056 | ||
1057 | extern struct symbol * | |
1058 | find_addr_symbol PARAMS ((CORE_ADDR, struct symtab **, CORE_ADDR *)); | |
1059 | ||
bd5635a1 | 1060 | /* Given a symtab and line number, return the pc there. */ |
b0246b3b FF |
1061 | |
1062 | extern CORE_ADDR | |
1063 | find_line_pc PARAMS ((struct symtab *, int)); | |
1064 | ||
1065 | extern int | |
404f69a8 | 1066 | find_line_pc_range PARAMS ((struct symtab_and_line, |
b86a1b3b | 1067 | CORE_ADDR *, CORE_ADDR *)); |
b0246b3b FF |
1068 | |
1069 | extern void | |
1070 | resolve_sal_pc PARAMS ((struct symtab_and_line *)); | |
bd5635a1 | 1071 | |
2e4964ad FF |
1072 | /* Given a string, return the line specified by it. For commands like "list" |
1073 | and "breakpoint". */ | |
bd5635a1 | 1074 | |
b0246b3b FF |
1075 | extern struct symtabs_and_lines |
1076 | decode_line_spec PARAMS ((char *, int)); | |
1077 | ||
1078 | extern struct symtabs_and_lines | |
1079 | decode_line_spec_1 PARAMS ((char *, int)); | |
1080 | ||
1081 | extern struct symtabs_and_lines | |
6f87ec4a | 1082 | decode_line_1 PARAMS ((char **, int, struct symtab *, int, char ***)); |
bd5635a1 | 1083 | |
5c43db6b | 1084 | /* Symmisc.c */ |
b0246b3b | 1085 | |
35fcebce PB |
1086 | #if MAINTENANCE_CMDS |
1087 | ||
1088 | void | |
1089 | maintenance_print_symbols PARAMS ((char *, int)); | |
1090 | ||
1091 | void | |
1092 | maintenance_print_psymbols PARAMS ((char *, int)); | |
1093 | ||
1094 | void | |
1095 | maintenance_print_msymbols PARAMS ((char *, int)); | |
1096 | ||
1097 | void | |
1098 | maintenance_print_objfiles PARAMS ((char *, int)); | |
1099 | ||
1100 | #endif | |
1101 | ||
b0246b3b FF |
1102 | extern void |
1103 | free_symtab PARAMS ((struct symtab *)); | |
5c43db6b | 1104 | |
bd5635a1 | 1105 | /* Symbol-reading stuff in symfile.c and solib.c. */ |
b0246b3b FF |
1106 | |
1107 | extern struct symtab * | |
1108 | psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
1109 | ||
1110 | extern void | |
1111 | clear_solib PARAMS ((void)); | |
1112 | ||
1113 | extern struct objfile * | |
1114 | symbol_file_add PARAMS ((char *, int, CORE_ADDR, int, int, int)); | |
bd5635a1 RP |
1115 | |
1116 | /* source.c */ | |
bd5635a1 | 1117 | |
b9298844 JK |
1118 | extern int frame_file_full_name; /* in stack.c */ |
1119 | ||
b0246b3b | 1120 | extern int |
b9298844 | 1121 | identify_source_line PARAMS ((struct symtab *, int, int, CORE_ADDR)); |
b0246b3b FF |
1122 | |
1123 | extern void | |
1124 | print_source_lines PARAMS ((struct symtab *, int, int, int)); | |
1125 | ||
1126 | extern void | |
1127 | forget_cached_source_info PARAMS ((void)); | |
1128 | ||
1129 | extern void | |
1130 | select_source_symtab PARAMS ((struct symtab *)); | |
1131 | ||
d63aae7f | 1132 | extern char **make_symbol_completion_list PARAMS ((char *, char *)); |
b0246b3b FF |
1133 | |
1134 | /* symtab.c */ | |
1135 | ||
1136 | extern struct partial_symtab * | |
1137 | find_main_psymtab PARAMS ((void)); | |
1138 | ||
1139 | /* blockframe.c */ | |
1140 | ||
1141 | extern struct blockvector * | |
1142 | blockvector_for_pc PARAMS ((CORE_ADDR, int *)); | |
bd5635a1 | 1143 | |
b0246b3b | 1144 | /* symfile.c */ |
4a35d6e9 | 1145 | |
313dd520 JK |
1146 | extern void |
1147 | clear_symtab_users PARAMS ((void)); | |
1148 | ||
b0246b3b FF |
1149 | extern enum language |
1150 | deduce_language_from_filename PARAMS ((char *)); | |
4a35d6e9 | 1151 | |
b0246b3b | 1152 | #endif /* !defined(SYMTAB_H) */ |