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