Commit | Line | Data |
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bd5635a1 | 1 | /* Symbol table definitions for GDB. |
e02a2ad9 | 2 | Copyright 1986, 1989, 1991, 1992, 1993, 1994, 1995, 1996 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 | 17 | along with this program; if not, write to the Free Software |
3f687c78 | 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 | |
2ad5709f | 28 | #include "bcache.h" |
bd5635a1 | 29 | |
2fe3b329 PS |
30 | /* Don't do this; it means that if some .o's are compiled with GNU C |
31 | and some are not (easy to do accidentally the way we configure | |
32 | things; also it is a pain to have to "make clean" every time you | |
33 | want to switch compilers), then GDB dies a horrible death. */ | |
34 | /* GNU C supports enums that are bitfields. Some compilers don't. */ | |
35 | #if 0 && defined(__GNUC__) && !defined(BYTE_BITFIELD) | |
21578747 JG |
36 | #define BYTE_BITFIELD :8; |
37 | #else | |
38 | #define BYTE_BITFIELD /*nothing*/ | |
39 | #endif | |
40 | ||
2e4964ad | 41 | /* Define a structure for the information that is common to all symbol types, |
d63aae7f JK |
42 | including minimal symbols, partial symbols, and full symbols. In a |
43 | multilanguage environment, some language specific information may need to | |
21578747 JG |
44 | be recorded along with each symbol. |
45 | ||
46 | These fields are ordered to encourage good packing, since we frequently | |
47 | have tens or hundreds of thousands of these. */ | |
2e4964ad FF |
48 | |
49 | struct general_symbol_info | |
50 | { | |
51 | /* Name of the symbol. This is a required field. Storage for the name is | |
52 | allocated on the psymbol_obstack or symbol_obstack for the associated | |
53 | objfile. */ | |
54 | ||
55 | char *name; | |
56 | ||
fce30fa1 JK |
57 | /* Value of the symbol. Which member of this union to use, and what |
58 | it means, depends on what kind of symbol this is and its | |
59 | SYMBOL_CLASS. See comments there for more details. All of these | |
60 | are in host byte order (though what they point to might be in | |
61 | target byte order, e.g. LOC_CONST_BYTES). */ | |
2e4964ad FF |
62 | |
63 | union | |
64 | { | |
2fe3b329 PS |
65 | /* The fact that this is a long not a LONGEST mainly limits the |
66 | range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not | |
67 | sure that is a big deal. */ | |
fad466eb | 68 | long ivalue; |
2e4964ad | 69 | |
2e4964ad FF |
70 | struct block *block; |
71 | ||
2e4964ad FF |
72 | char *bytes; |
73 | ||
2e4964ad FF |
74 | CORE_ADDR address; |
75 | ||
76 | /* for opaque typedef struct chain */ | |
bd5635a1 | 77 | |
2e4964ad FF |
78 | struct symbol *chain; |
79 | } | |
80 | value; | |
81 | ||
d63aae7f JK |
82 | /* Since one and only one language can apply, wrap the language specific |
83 | information inside a union. */ | |
2e4964ad | 84 | |
d63aae7f JK |
85 | union |
86 | { | |
87 | struct cplus_specific /* For C++ */ | |
88 | { | |
89 | char *demangled_name; | |
90 | } cplus_specific; | |
91 | struct chill_specific /* For Chill */ | |
2e4964ad | 92 | { |
d63aae7f JK |
93 | char *demangled_name; |
94 | } chill_specific; | |
95 | } language_specific; | |
ca6a826d | 96 | |
21578747 JG |
97 | /* Record the source code language that applies to this symbol. |
98 | This is used to select one of the fields from the language specific | |
99 | union above. */ | |
100 | ||
101 | enum language language BYTE_BITFIELD; | |
102 | ||
ca6a826d PS |
103 | /* Which section is this symbol in? This is an index into |
104 | section_offsets for this objfile. Negative means that the symbol | |
d63aae7f | 105 | does not get relocated relative to a section. |
b86a1b3b JK |
106 | Disclaimer: currently this is just used for xcoff, so don't |
107 | expect all symbol-reading code to set it correctly (the ELF code | |
108 | also tries to set it correctly). */ | |
d63aae7f | 109 | |
fb155ce3 | 110 | short section; |
56e327b3 FF |
111 | |
112 | /* The bfd section associated with this symbol. */ | |
113 | ||
114 | asection *bfd_section; | |
2e4964ad FF |
115 | }; |
116 | ||
56e327b3 FF |
117 | extern CORE_ADDR symbol_overlayed_address PARAMS((CORE_ADDR, asection *)); |
118 | ||
2e4964ad | 119 | #define SYMBOL_NAME(symbol) (symbol)->ginfo.name |
fad466eb | 120 | #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue |
2e4964ad FF |
121 | #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address |
122 | #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes | |
123 | #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block | |
124 | #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain | |
d63aae7f | 125 | #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language |
ca6a826d | 126 | #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section |
56e327b3 | 127 | #define SYMBOL_BFD_SECTION(symbol) (symbol)->ginfo.bfd_section |
ece2e98a JG |
128 | |
129 | #define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \ | |
d63aae7f | 130 | (symbol)->ginfo.language_specific.cplus_specific.demangled_name |
2e4964ad | 131 | |
ece2e98a JG |
132 | /* Macro that initializes the language dependent portion of a symbol |
133 | depending upon the language for the symbol. */ | |
134 | ||
135 | #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \ | |
136 | do { \ | |
137 | SYMBOL_LANGUAGE (symbol) = language; \ | |
138 | if (SYMBOL_LANGUAGE (symbol) == language_cplus) \ | |
139 | { \ | |
140 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
141 | } \ | |
ece2e98a JG |
142 | else if (SYMBOL_LANGUAGE (symbol) == language_chill) \ |
143 | { \ | |
144 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \ | |
145 | } \ | |
ece2e98a JG |
146 | else \ |
147 | { \ | |
d63aae7f JK |
148 | memset (&(symbol)->ginfo.language_specific, 0, \ |
149 | sizeof ((symbol)->ginfo.language_specific)); \ | |
ece2e98a JG |
150 | } \ |
151 | } while (0) | |
152 | ||
153 | /* Macro that attempts to initialize the demangled name for a symbol, | |
154 | based on the language of that symbol. If the language is set to | |
155 | language_auto, it will attempt to find any demangling algorithm | |
156 | that works and then set the language appropriately. If no demangling | |
157 | of any kind is found, the language is set back to language_unknown, | |
158 | so we can avoid doing this work again the next time we encounter | |
159 | the symbol. Any required space to store the name is obtained from the | |
160 | specified obstack. */ | |
161 | ||
162 | #define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \ | |
163 | do { \ | |
164 | char *demangled = NULL; \ | |
165 | if (SYMBOL_LANGUAGE (symbol) == language_cplus \ | |
166 | || SYMBOL_LANGUAGE (symbol) == language_auto) \ | |
167 | { \ | |
168 | demangled = \ | |
169 | cplus_demangle (SYMBOL_NAME (symbol), DMGL_PARAMS | DMGL_ANSI);\ | |
170 | if (demangled != NULL) \ | |
171 | { \ | |
172 | SYMBOL_LANGUAGE (symbol) = language_cplus; \ | |
173 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \ | |
174 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
175 | free (demangled); \ | |
176 | } \ | |
177 | else \ | |
178 | { \ | |
179 | SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \ | |
180 | } \ | |
181 | } \ | |
ece2e98a JG |
182 | if (demangled == NULL \ |
183 | && (SYMBOL_LANGUAGE (symbol) == language_chill \ | |
184 | || SYMBOL_LANGUAGE (symbol) == language_auto)) \ | |
185 | { \ | |
186 | demangled = \ | |
187 | chill_demangle (SYMBOL_NAME (symbol)); \ | |
188 | if (demangled != NULL) \ | |
189 | { \ | |
190 | SYMBOL_LANGUAGE (symbol) = language_chill; \ | |
191 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = \ | |
192 | obsavestring (demangled, strlen (demangled), (obstack)); \ | |
193 | free (demangled); \ | |
194 | } \ | |
195 | else \ | |
196 | { \ | |
197 | SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \ | |
198 | } \ | |
199 | } \ | |
ece2e98a JG |
200 | if (SYMBOL_LANGUAGE (symbol) == language_auto) \ |
201 | { \ | |
202 | SYMBOL_LANGUAGE (symbol) = language_unknown; \ | |
203 | } \ | |
204 | } while (0) | |
205 | ||
206 | /* Macro that returns the demangled name for a symbol based on the language | |
207 | for that symbol. If no demangled name exists, returns NULL. */ | |
208 | ||
ece2e98a JG |
209 | #define SYMBOL_DEMANGLED_NAME(symbol) \ |
210 | (SYMBOL_LANGUAGE (symbol) == language_cplus \ | |
211 | ? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \ | |
212 | : (SYMBOL_LANGUAGE (symbol) == language_chill \ | |
213 | ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) \ | |
214 | : NULL)) | |
215 | ||
5aefc1ca | 216 | #define SYMBOL_CHILL_DEMANGLED_NAME(symbol) \ |
d63aae7f | 217 | (symbol)->ginfo.language_specific.chill_specific.demangled_name |
ece2e98a | 218 | |
2e4964ad FF |
219 | /* Macro that returns the "natural source name" of a symbol. In C++ this is |
220 | the "demangled" form of the name if demangle is on and the "mangled" form | |
221 | of the name if demangle is off. In other languages this is just the | |
ece2e98a | 222 | symbol name. The result should never be NULL. */ |
2e4964ad | 223 | |
ece2e98a JG |
224 | #define SYMBOL_SOURCE_NAME(symbol) \ |
225 | (demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
226 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
227 | : SYMBOL_NAME (symbol)) | |
2e4964ad FF |
228 | |
229 | /* Macro that returns the "natural assembly name" of a symbol. In C++ this is | |
230 | the "mangled" form of the name if demangle is off, or if demangle is on and | |
231 | asm_demangle is off. Otherwise if asm_demangle is on it is the "demangled" | |
ece2e98a JG |
232 | form. In other languages this is just the symbol name. The result should |
233 | never be NULL. */ | |
2e4964ad | 234 | |
ece2e98a JG |
235 | #define SYMBOL_LINKAGE_NAME(symbol) \ |
236 | (demangle && asm_demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
237 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
238 | : SYMBOL_NAME (symbol)) | |
2e4964ad FF |
239 | |
240 | /* Macro that tests a symbol for a match against a specified name string. | |
241 | First test the unencoded name, then looks for and test a C++ encoded | |
242 | name if it exists. Note that whitespace is ignored while attempting to | |
243 | match a C++ encoded name, so that "foo::bar(int,long)" is the same as | |
244 | "foo :: bar (int, long)". | |
245 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
246 | ||
ece2e98a JG |
247 | #define SYMBOL_MATCHES_NAME(symbol, name) \ |
248 | (STREQ (SYMBOL_NAME (symbol), (name)) \ | |
249 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
250 | && strcmp_iw (SYMBOL_DEMANGLED_NAME (symbol), (name)) == 0)) | |
2e4964ad FF |
251 | |
252 | /* Macro that tests a symbol for an re-match against the last compiled regular | |
253 | expression. First test the unencoded name, then look for and test a C++ | |
254 | encoded name if it exists. | |
255 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
256 | ||
ece2e98a JG |
257 | #define SYMBOL_MATCHES_REGEXP(symbol) \ |
258 | (re_exec (SYMBOL_NAME (symbol)) != 0 \ | |
259 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
260 | && re_exec (SYMBOL_DEMANGLED_NAME (symbol)) != 0)) | |
2e4964ad | 261 | |
b0246b3b | 262 | /* Define a simple structure used to hold some very basic information about |
2e4964ad FF |
263 | all defined global symbols (text, data, bss, abs, etc). The only required |
264 | information is the general_symbol_info. | |
265 | ||
266 | In many cases, even if a file was compiled with no special options for | |
267 | debugging at all, as long as was not stripped it will contain sufficient | |
268 | information to build a useful minimal symbol table using this structure. | |
269 | Even when a file contains enough debugging information to build a full | |
270 | symbol table, these minimal symbols are still useful for quickly mapping | |
271 | between names and addresses, and vice versa. They are also sometimes | |
272 | used to figure out what full symbol table entries need to be read in. */ | |
bd5635a1 | 273 | |
b0246b3b FF |
274 | struct minimal_symbol |
275 | { | |
bd5635a1 | 276 | |
fce30fa1 JK |
277 | /* The general symbol info required for all types of symbols. |
278 | ||
279 | The SYMBOL_VALUE_ADDRESS contains the address that this symbol | |
280 | corresponds to. */ | |
bd5635a1 | 281 | |
2e4964ad | 282 | struct general_symbol_info ginfo; |
bd5635a1 | 283 | |
b0246b3b FF |
284 | /* The info field is available for caching machine-specific information that |
285 | The AMD 29000 tdep.c uses it to remember things it has decoded from the | |
286 | instructions in the function header, so it doesn't have to rederive the | |
287 | info constantly (over a serial line). It is initialized to zero and | |
288 | stays that way until target-dependent code sets it. Storage for any data | |
289 | pointed to by this field should be allocated on the symbol_obstack for | |
290 | the associated objfile. The type would be "void *" except for reasons | |
291 | of compatibility with older compilers. This field is optional. */ | |
292 | ||
293 | char *info; | |
294 | ||
3f687c78 SG |
295 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
296 | /* Which source file is this symbol in? Only relevant for mst_file_*. */ | |
297 | char *filename; | |
298 | #endif | |
299 | ||
b0246b3b FF |
300 | /* Classification types for this symbol. These should be taken as "advisory |
301 | only", since if gdb can't easily figure out a classification it simply | |
302 | selects mst_unknown. It may also have to guess when it can't figure out | |
303 | which is a better match between two types (mst_data versus mst_bss) for | |
304 | example. Since the minimal symbol info is sometimes derived from the | |
305 | BFD library's view of a file, we need to live with what information bfd | |
306 | supplies. */ | |
307 | ||
308 | enum minimal_symbol_type | |
bd5635a1 | 309 | { |
b0246b3b FF |
310 | mst_unknown = 0, /* Unknown type, the default */ |
311 | mst_text, /* Generally executable instructions */ | |
312 | mst_data, /* Generally initialized data */ | |
313 | mst_bss, /* Generally uninitialized data */ | |
313dd520 | 314 | mst_abs, /* Generally absolute (nonrelocatable) */ |
2fe3b329 PS |
315 | /* GDB uses mst_solib_trampoline for the start address of a shared |
316 | library trampoline entry. Breakpoints for shared library functions | |
317 | are put there if the shared library is not yet loaded. | |
318 | After the shared library is loaded, lookup_minimal_symbol will | |
319 | prefer the minimal symbol from the shared library (usually | |
320 | a mst_text symbol) over the mst_solib_trampoline symbol, and the | |
321 | breakpoints will be moved to their true address in the shared | |
322 | library via breakpoint_re_set. */ | |
323 | mst_solib_trampoline, /* Shared library trampoline code */ | |
313dd520 JK |
324 | /* For the mst_file* types, the names are only guaranteed to be unique |
325 | within a given .o file. */ | |
326 | mst_file_text, /* Static version of mst_text */ | |
327 | mst_file_data, /* Static version of mst_data */ | |
328 | mst_file_bss /* Static version of mst_bss */ | |
21578747 | 329 | } type BYTE_BITFIELD; |
bd5635a1 | 330 | }; |
7e258d18 | 331 | |
2e4964ad FF |
332 | #define MSYMBOL_INFO(msymbol) (msymbol)->info |
333 | #define MSYMBOL_TYPE(msymbol) (msymbol)->type | |
334 | ||
bd5635a1 RP |
335 | \f |
336 | /* All of the name-scope contours of the program | |
337 | are represented by `struct block' objects. | |
338 | All of these objects are pointed to by the blockvector. | |
339 | ||
340 | Each block represents one name scope. | |
341 | Each lexical context has its own block. | |
342 | ||
0b28c260 JK |
343 | The blockvector begins with some special blocks. |
344 | The GLOBAL_BLOCK contains all the symbols defined in this compilation | |
bd5635a1 | 345 | whose scope is the entire program linked together. |
0b28c260 | 346 | The STATIC_BLOCK contains all the symbols whose scope is the |
bd5635a1 | 347 | entire compilation excluding other separate compilations. |
0b28c260 | 348 | Blocks starting with the FIRST_LOCAL_BLOCK are not special. |
bd5635a1 RP |
349 | |
350 | Each block records a range of core addresses for the code that | |
0b28c260 | 351 | is in the scope of the block. The STATIC_BLOCK and GLOBAL_BLOCK |
bd5635a1 RP |
352 | give, for the range of code, the entire range of code produced |
353 | by the compilation that the symbol segment belongs to. | |
354 | ||
355 | The blocks appear in the blockvector | |
356 | in order of increasing starting-address, | |
357 | and, within that, in order of decreasing ending-address. | |
358 | ||
359 | This implies that within the body of one function | |
360 | the blocks appear in the order of a depth-first tree walk. */ | |
361 | ||
362 | struct blockvector | |
363 | { | |
364 | /* Number of blocks in the list. */ | |
365 | int nblocks; | |
366 | /* The blocks themselves. */ | |
367 | struct block *block[1]; | |
368 | }; | |
369 | ||
2e4964ad FF |
370 | #define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks |
371 | #define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n] | |
372 | ||
92a29b47 | 373 | /* Special block numbers */ |
2e4964ad FF |
374 | |
375 | #define GLOBAL_BLOCK 0 | |
376 | #define STATIC_BLOCK 1 | |
92a29b47 JG |
377 | #define FIRST_LOCAL_BLOCK 2 |
378 | ||
bd5635a1 RP |
379 | struct block |
380 | { | |
2e4964ad | 381 | |
0b28c260 | 382 | /* Addresses in the executable code that are in this block. */ |
2e4964ad FF |
383 | |
384 | CORE_ADDR startaddr; | |
385 | CORE_ADDR endaddr; | |
386 | ||
0b28c260 JK |
387 | /* The symbol that names this block, if the block is the body of a |
388 | function; otherwise, zero. */ | |
2e4964ad | 389 | |
bd5635a1 | 390 | struct symbol *function; |
2e4964ad FF |
391 | |
392 | /* The `struct block' for the containing block, or 0 if none. | |
0b28c260 JK |
393 | |
394 | The superblock of a top-level local block (i.e. a function in the | |
395 | case of C) is the STATIC_BLOCK. The superblock of the | |
396 | STATIC_BLOCK is the GLOBAL_BLOCK. */ | |
2e4964ad | 397 | |
bd5635a1 | 398 | struct block *superblock; |
2e4964ad | 399 | |
0b28c260 JK |
400 | /* Version of GCC used to compile the function corresponding |
401 | to this block, or 0 if not compiled with GCC. When possible, | |
402 | GCC should be compatible with the native compiler, or if that | |
403 | is not feasible, the differences should be fixed during symbol | |
404 | reading. As of 16 Apr 93, this flag is never used to distinguish | |
405 | between gcc2 and the native compiler. | |
406 | ||
407 | If there is no function corresponding to this block, this meaning | |
408 | of this flag is undefined. */ | |
2e4964ad | 409 | |
bd5635a1 | 410 | unsigned char gcc_compile_flag; |
2e4964ad | 411 | |
bd5635a1 | 412 | /* Number of local symbols. */ |
2e4964ad | 413 | |
bd5635a1 | 414 | int nsyms; |
2e4964ad | 415 | |
54023465 JK |
416 | /* The symbols. If some of them are arguments, then they must be |
417 | in the order in which we would like to print them. */ | |
2e4964ad | 418 | |
bd5635a1 RP |
419 | struct symbol *sym[1]; |
420 | }; | |
bd5635a1 | 421 | |
2e4964ad FF |
422 | #define BLOCK_START(bl) (bl)->startaddr |
423 | #define BLOCK_END(bl) (bl)->endaddr | |
424 | #define BLOCK_NSYMS(bl) (bl)->nsyms | |
425 | #define BLOCK_SYM(bl, n) (bl)->sym[n] | |
426 | #define BLOCK_FUNCTION(bl) (bl)->function | |
427 | #define BLOCK_SUPERBLOCK(bl) (bl)->superblock | |
428 | #define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag | |
bd5635a1 | 429 | |
54023465 JK |
430 | /* Nonzero if symbols of block BL should be sorted alphabetically. |
431 | Don't sort a block which corresponds to a function. If we did the | |
432 | sorting would have to preserve the order of the symbols for the | |
433 | arguments. */ | |
bd5635a1 | 434 | |
54023465 | 435 | #define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40 && BLOCK_FUNCTION (bl) == NULL) |
bd5635a1 | 436 | |
2e4964ad FF |
437 | \f |
438 | /* Represent one symbol name; a variable, constant, function or typedef. */ | |
bd5635a1 | 439 | |
2e4964ad FF |
440 | /* Different name spaces for symbols. Looking up a symbol specifies a |
441 | namespace and ignores symbol definitions in other name spaces. */ | |
e02a2ad9 SC |
442 | |
443 | typedef enum | |
bd5635a1 | 444 | { |
2e4964ad FF |
445 | /* UNDEF_NAMESPACE is used when a namespace has not been discovered or |
446 | none of the following apply. This usually indicates an error either | |
447 | in the symbol information or in gdb's handling of symbols. */ | |
448 | ||
449 | UNDEF_NAMESPACE, | |
450 | ||
451 | /* VAR_NAMESPACE is the usual namespace. In C, this contains variables, | |
452 | function names, typedef names and enum type values. */ | |
453 | ||
454 | VAR_NAMESPACE, | |
455 | ||
456 | /* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names. | |
457 | Thus, if `struct foo' is used in a C program, it produces a symbol named | |
458 | `foo' in the STRUCT_NAMESPACE. */ | |
459 | ||
460 | STRUCT_NAMESPACE, | |
461 | ||
462 | /* LABEL_NAMESPACE may be used for names of labels (for gotos); | |
463 | currently it is not used and labels are not recorded at all. */ | |
464 | ||
465 | LABEL_NAMESPACE | |
e02a2ad9 | 466 | } namespace_enum; |
bd5635a1 RP |
467 | |
468 | /* An address-class says where to find the value of a symbol. */ | |
469 | ||
470 | enum address_class | |
471 | { | |
2e4964ad FF |
472 | /* Not used; catches errors */ |
473 | ||
474 | LOC_UNDEF, | |
475 | ||
476 | /* Value is constant int SYMBOL_VALUE, host byteorder */ | |
477 | ||
478 | LOC_CONST, | |
479 | ||
480 | /* Value is at fixed address SYMBOL_VALUE_ADDRESS */ | |
481 | ||
482 | LOC_STATIC, | |
483 | ||
fce30fa1 | 484 | /* Value is in register. SYMBOL_VALUE is the register number. */ |
2e4964ad FF |
485 | |
486 | LOC_REGISTER, | |
487 | ||
fce30fa1 | 488 | /* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */ |
2e4964ad FF |
489 | |
490 | LOC_ARG, | |
491 | ||
5afa2040 | 492 | /* Value address is at SYMBOL_VALUE offset in arglist. */ |
2e4964ad FF |
493 | |
494 | LOC_REF_ARG, | |
495 | ||
fce30fa1 JK |
496 | /* Value is in register number SYMBOL_VALUE. Just like LOC_REGISTER |
497 | except this is an argument. Probably the cleaner way to handle | |
498 | this would be to separate address_class (which would include | |
499 | separate ARG and LOCAL to deal with FRAME_ARGS_ADDRESS versus | |
500 | FRAME_LOCALS_ADDRESS), and an is_argument flag. | |
0b28c260 JK |
501 | |
502 | For some symbol formats (stabs, for some compilers at least), | |
5afa2040 JK |
503 | the compiler generates two symbols, an argument and a register. |
504 | In some cases we combine them to a single LOC_REGPARM in symbol | |
9c5c2722 JK |
505 | reading, but currently not for all cases (e.g. it's passed on the |
506 | stack and then loaded into a register). */ | |
2e4964ad FF |
507 | |
508 | LOC_REGPARM, | |
509 | ||
5afa2040 JK |
510 | /* Value is in specified register. Just like LOC_REGPARM except the |
511 | register holds the address of the argument instead of the argument | |
512 | itself. This is currently used for the passing of structs and unions | |
b9298844 JK |
513 | on sparc and hppa. It is also used for call by reference where the |
514 | address is in a register, at least by mipsread.c. */ | |
5afa2040 JK |
515 | |
516 | LOC_REGPARM_ADDR, | |
517 | ||
fce30fa1 | 518 | /* Value is a local variable at SYMBOL_VALUE offset in stack frame. */ |
2e4964ad FF |
519 | |
520 | LOC_LOCAL, | |
521 | ||
522 | /* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace | |
523 | STRUCT_NAMESPACE all have this class. */ | |
524 | ||
525 | LOC_TYPEDEF, | |
526 | ||
527 | /* Value is address SYMBOL_VALUE_ADDRESS in the code */ | |
528 | ||
529 | LOC_LABEL, | |
530 | ||
fce30fa1 JK |
531 | /* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'. |
532 | In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address | |
533 | of the block. Function names have this class. */ | |
2e4964ad FF |
534 | |
535 | LOC_BLOCK, | |
536 | ||
ca6a826d | 537 | /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in |
2e4964ad FF |
538 | target byte order. */ |
539 | ||
540 | LOC_CONST_BYTES, | |
541 | ||
fce30fa1 JK |
542 | /* Value is arg at SYMBOL_VALUE offset in stack frame. Differs from |
543 | LOC_LOCAL in that symbol is an argument; differs from LOC_ARG in | |
544 | that we find it in the frame (FRAME_LOCALS_ADDRESS), not in the | |
545 | arglist (FRAME_ARGS_ADDRESS). Added for i960, which passes args | |
546 | in regs then copies to frame. */ | |
2e4964ad | 547 | |
ca6a826d PS |
548 | LOC_LOCAL_ARG, |
549 | ||
a1c8d76e JK |
550 | /* Value is at SYMBOL_VALUE offset from the current value of |
551 | register number SYMBOL_BASEREG. This exists mainly for the same | |
552 | things that LOC_LOCAL and LOC_ARG do; but we need to do this | |
553 | instead because on 88k DWARF gives us the offset from the | |
554 | frame/stack pointer, rather than the offset from the "canonical | |
555 | frame address" used by COFF, stabs, etc., and we don't know how | |
556 | to convert between these until we start examining prologues. | |
557 | ||
c438b3af JK |
558 | Note that LOC_BASEREG is much less general than a DWARF expression. |
559 | We don't need the generality (at least not yet), and storing a general | |
560 | DWARF expression would presumably take up more space than the existing | |
561 | scheme. */ | |
a1c8d76e JK |
562 | |
563 | LOC_BASEREG, | |
564 | ||
565 | /* Same as LOC_BASEREG but it is an argument. */ | |
566 | ||
567 | LOC_BASEREG_ARG, | |
568 | ||
e02a2ad9 SC |
569 | /* Value is at fixed address, but the address of the variable has |
570 | to be determined from the minimal symbol table whenever the | |
571 | variable is referenced. | |
572 | This happens if debugging information for a global symbol is | |
573 | emitted and the corresponding minimal symbol is defined | |
574 | in another object file or runtime common storage. | |
575 | The linker might even remove the minimal symbol if the global | |
576 | symbol is never referenced, in which case the symbol remains | |
577 | unresolved. */ | |
578 | ||
579 | LOC_UNRESOLVED, | |
580 | ||
ca6a826d | 581 | /* The variable does not actually exist in the program. |
fce30fa1 | 582 | The value is ignored. */ |
2e4964ad | 583 | |
ca6a826d | 584 | LOC_OPTIMIZED_OUT |
bd5635a1 RP |
585 | }; |
586 | ||
587 | struct symbol | |
588 | { | |
2e4964ad FF |
589 | |
590 | /* The general symbol info required for all types of symbols. */ | |
591 | ||
592 | struct general_symbol_info ginfo; | |
593 | ||
21578747 | 594 | /* Data type of value */ |
2e4964ad | 595 | |
21578747 | 596 | struct type *type; |
2e4964ad | 597 | |
21578747 | 598 | /* Name space code. */ |
2e4964ad | 599 | |
56e327b3 FF |
600 | #ifdef __MFC4__ |
601 | /* FIXME: don't conflict with C++'s namespace */ | |
602 | /* would be safer to do a global change for all namespace identifiers. */ | |
603 | #define namespace _namespace | |
604 | #endif | |
e02a2ad9 | 605 | namespace_enum namespace BYTE_BITFIELD; |
2e4964ad | 606 | |
21578747 | 607 | /* Address class */ |
2e4964ad | 608 | |
3f687c78 | 609 | enum address_class aclass BYTE_BITFIELD; |
bd5635a1 | 610 | |
2e4964ad FF |
611 | /* Line number of definition. FIXME: Should we really make the assumption |
612 | that nobody will try to debug files longer than 64K lines? What about | |
613 | machine generated programs? */ | |
614 | ||
bd5635a1 RP |
615 | unsigned short line; |
616 | ||
252f6c65 FF |
617 | /* Some symbols require an additional value to be recorded on a per- |
618 | symbol basis. Stash those values here. */ | |
2e4964ad | 619 | |
252f6c65 FF |
620 | union |
621 | { | |
a1c8d76e JK |
622 | /* Used by LOC_BASEREG and LOC_BASEREG_ARG. */ |
623 | short basereg; | |
252f6c65 FF |
624 | } |
625 | aux_value; | |
bd5635a1 RP |
626 | }; |
627 | ||
2e4964ad | 628 | #define SYMBOL_NAMESPACE(symbol) (symbol)->namespace |
3f687c78 | 629 | #define SYMBOL_CLASS(symbol) (symbol)->aclass |
2e4964ad FF |
630 | #define SYMBOL_TYPE(symbol) (symbol)->type |
631 | #define SYMBOL_LINE(symbol) (symbol)->line | |
a1c8d76e | 632 | #define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg |
2e4964ad | 633 | \f |
bd5635a1 RP |
634 | /* A partial_symbol records the name, namespace, and address class of |
635 | symbols whose types we have not parsed yet. For functions, it also | |
636 | contains their memory address, so we can find them from a PC value. | |
637 | Each partial_symbol sits in a partial_symtab, all of which are chained | |
b0246b3b | 638 | on a partial symtab list and which points to the corresponding |
bd5635a1 RP |
639 | normal symtab once the partial_symtab has been referenced. */ |
640 | ||
641 | struct partial_symbol | |
642 | { | |
2e4964ad FF |
643 | |
644 | /* The general symbol info required for all types of symbols. */ | |
645 | ||
646 | struct general_symbol_info ginfo; | |
647 | ||
bd5635a1 | 648 | /* Name space code. */ |
2e4964ad | 649 | |
e02a2ad9 | 650 | namespace_enum namespace BYTE_BITFIELD; |
2e4964ad | 651 | |
bd5635a1 | 652 | /* Address class (for info_symbols) */ |
2e4964ad | 653 | |
3f687c78 | 654 | enum address_class aclass BYTE_BITFIELD; |
2e4964ad | 655 | |
bd5635a1 | 656 | }; |
2e4964ad FF |
657 | |
658 | #define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace | |
3f687c78 | 659 | #define PSYMBOL_CLASS(psymbol) (psymbol)->aclass |
2e4964ad | 660 | |
bd5635a1 | 661 | \f |
2e4964ad FF |
662 | /* Source-file information. This describes the relation between source files, |
663 | ine numbers and addresses in the program text. */ | |
bd5635a1 RP |
664 | |
665 | struct sourcevector | |
666 | { | |
667 | int length; /* Number of source files described */ | |
668 | struct source *source[1]; /* Descriptions of the files */ | |
669 | }; | |
670 | ||
671 | /* Each item represents a line-->pc (or the reverse) mapping. This is | |
672 | somewhat more wasteful of space than one might wish, but since only | |
673 | the files which are actually debugged are read in to core, we don't | |
ece2e98a | 674 | waste much space. */ |
bd5635a1 RP |
675 | |
676 | struct linetable_entry | |
677 | { | |
678 | int line; | |
679 | CORE_ADDR pc; | |
680 | }; | |
681 | ||
c438b3af JK |
682 | /* The order of entries in the linetable is significant. They should |
683 | be sorted by increasing values of the pc field. If there is more than | |
684 | one entry for a given pc, then I'm not sure what should happen (and | |
685 | I not sure whether we currently handle it the best way). | |
b9298844 | 686 | |
c438b3af | 687 | Example: a C for statement generally looks like this |
b9298844 JK |
688 | |
689 | 10 0x100 - for the init/test part of a for stmt. | |
690 | 20 0x200 | |
691 | 30 0x300 | |
692 | 10 0x400 - for the increment part of a for stmt. | |
693 | ||
c438b3af | 694 | */ |
b9298844 | 695 | |
bd5635a1 RP |
696 | struct linetable |
697 | { | |
698 | int nitems; | |
c438b3af JK |
699 | |
700 | /* Actually NITEMS elements. If you don't like this use of the | |
701 | `struct hack', you can shove it up your ANSI (seriously, if the | |
702 | committee tells us how to do it, we can probably go along). */ | |
bd5635a1 RP |
703 | struct linetable_entry item[1]; |
704 | }; | |
705 | ||
706 | /* All the information on one source file. */ | |
707 | ||
708 | struct source | |
709 | { | |
710 | char *name; /* Name of file */ | |
711 | struct linetable contents; | |
712 | }; | |
713 | ||
2670f34d JG |
714 | /* How to relocate the symbols from each section in a symbol file. |
715 | Each struct contains an array of offsets. | |
716 | The ordering and meaning of the offsets is file-type-dependent; | |
717 | typically it is indexed by section numbers or symbol types or | |
718 | something like that. | |
719 | ||
720 | To give us flexibility in changing the internal representation | |
721 | of these offsets, the ANOFFSET macro must be used to insert and | |
722 | extract offset values in the struct. */ | |
723 | ||
724 | struct section_offsets | |
725 | { | |
726 | CORE_ADDR offsets[1]; /* As many as needed. */ | |
727 | }; | |
728 | ||
729 | #define ANOFFSET(secoff, whichone) (secoff->offsets[whichone]) | |
730 | ||
e74acce4 MA |
731 | /* The maximum possible size of a section_offsets table. */ |
732 | ||
733 | #define SIZEOF_SECTION_OFFSETS \ | |
734 | (sizeof (struct section_offsets) \ | |
735 | + sizeof (((struct section_offsets *) 0)->offsets) * (SECT_OFF_MAX-1)) | |
736 | ||
737 | ||
b86a1b3b | 738 | /* Each source file or header is represented by a struct symtab. |
bd5635a1 RP |
739 | These objects are chained through the `next' field. */ |
740 | ||
741 | struct symtab | |
742 | { | |
2e4964ad | 743 | |
bd5635a1 | 744 | /* Chain of all existing symtabs. */ |
2e4964ad | 745 | |
bd5635a1 | 746 | struct symtab *next; |
2e4964ad | 747 | |
b86a1b3b JK |
748 | /* List of all symbol scope blocks for this symtab. May be shared |
749 | between different symtabs (and normally is for all the symtabs | |
750 | in a given compilation unit). */ | |
2e4964ad | 751 | |
bd5635a1 | 752 | struct blockvector *blockvector; |
2e4964ad | 753 | |
4137c5fc | 754 | /* Table mapping core addresses to line numbers for this file. |
b86a1b3b | 755 | Can be NULL if none. Never shared between different symtabs. */ |
2e4964ad | 756 | |
bd5635a1 | 757 | struct linetable *linetable; |
2e4964ad | 758 | |
ca6a826d | 759 | /* Section in objfile->section_offsets for the blockvector and |
3f687c78 | 760 | the linetable. Probably always SECT_OFF_TEXT. */ |
ca6a826d PS |
761 | |
762 | int block_line_section; | |
763 | ||
764 | /* If several symtabs share a blockvector, exactly one of them | |
765 | should be designed the primary, so that the blockvector | |
766 | is relocated exactly once by objfile_relocate. */ | |
767 | ||
768 | int primary; | |
769 | ||
bd5635a1 | 770 | /* Name of this source file. */ |
2e4964ad | 771 | |
bd5635a1 | 772 | char *filename; |
2e4964ad | 773 | |
bd5635a1 | 774 | /* Directory in which it was compiled, or NULL if we don't know. */ |
2e4964ad | 775 | |
bd5635a1 | 776 | char *dirname; |
2e4964ad | 777 | |
bd5635a1 RP |
778 | /* This component says how to free the data we point to: |
779 | free_contents => do a tree walk and free each object. | |
780 | free_nothing => do nothing; some other symtab will free | |
781 | the data this one uses. | |
b86a1b3b JK |
782 | free_linetable => free just the linetable. FIXME: Is this redundant |
783 | with the primary field? */ | |
2e4964ad FF |
784 | |
785 | enum free_code | |
786 | { | |
787 | free_nothing, free_contents, free_linetable | |
788 | } | |
789 | free_code; | |
790 | ||
bd5635a1 RP |
791 | /* Pointer to one block of storage to be freed, if nonzero. */ |
792 | /* This is IN ADDITION to the action indicated by free_code. */ | |
2e4964ad | 793 | |
bd5635a1 | 794 | char *free_ptr; |
2e4964ad | 795 | |
bd5635a1 | 796 | /* Total number of lines found in source file. */ |
2e4964ad | 797 | |
bd5635a1 | 798 | int nlines; |
2e4964ad | 799 | |
025abdfb JK |
800 | /* line_charpos[N] is the position of the (N-1)th line of the |
801 | source file. "position" means something we can lseek() to; it | |
802 | is not guaranteed to be useful any other way. */ | |
2e4964ad | 803 | |
bd5635a1 | 804 | int *line_charpos; |
2e4964ad | 805 | |
bd5635a1 | 806 | /* Language of this source file. */ |
2e4964ad | 807 | |
bd5635a1 | 808 | enum language language; |
2e4964ad | 809 | |
609fd033 FF |
810 | /* String that identifies the format of the debugging information, such |
811 | as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful | |
812 | for automated testing of gdb but may also be information that is | |
813 | useful to the user. */ | |
814 | ||
815 | char *debugformat; | |
816 | ||
bd5635a1 | 817 | /* String of version information. May be zero. */ |
2e4964ad | 818 | |
bd5635a1 | 819 | char *version; |
2e4964ad | 820 | |
bd5635a1 | 821 | /* Full name of file as found by searching the source path. |
2e4964ad FF |
822 | NULL if not yet known. */ |
823 | ||
bd5635a1 | 824 | char *fullname; |
8aa13b87 | 825 | |
a048c8f5 | 826 | /* Object file from which this symbol information was read. */ |
2e4964ad | 827 | |
a048c8f5 | 828 | struct objfile *objfile; |
a048c8f5 | 829 | |
8aa13b87 JK |
830 | /* Anything extra for this symtab. This is for target machines |
831 | with special debugging info of some sort (which cannot just | |
832 | be represented in a normal symtab). */ | |
2e4964ad | 833 | |
8aa13b87 JK |
834 | #if defined (EXTRA_SYMTAB_INFO) |
835 | EXTRA_SYMTAB_INFO | |
836 | #endif | |
2e4964ad | 837 | |
bd5635a1 RP |
838 | }; |
839 | ||
2e4964ad FF |
840 | #define BLOCKVECTOR(symtab) (symtab)->blockvector |
841 | #define LINETABLE(symtab) (symtab)->linetable | |
842 | ||
843 | \f | |
bd5635a1 RP |
844 | /* Each source file that has not been fully read in is represented by |
845 | a partial_symtab. This contains the information on where in the | |
846 | executable the debugging symbols for a specific file are, and a | |
847 | list of names of global symbols which are located in this file. | |
b0246b3b | 848 | They are all chained on partial symtab lists. |
bd5635a1 RP |
849 | |
850 | Even after the source file has been read into a symtab, the | |
851 | partial_symtab remains around. They are allocated on an obstack, | |
852 | psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks- | |
853 | style execution of a bunch of .o's. */ | |
b0246b3b | 854 | |
bd5635a1 RP |
855 | struct partial_symtab |
856 | { | |
2e4964ad | 857 | |
bd5635a1 | 858 | /* Chain of all existing partial symtabs. */ |
2e4964ad | 859 | |
bd5635a1 | 860 | struct partial_symtab *next; |
2e4964ad | 861 | |
bd5635a1 | 862 | /* Name of the source file which this partial_symtab defines */ |
2e4964ad | 863 | |
bd5635a1 RP |
864 | char *filename; |
865 | ||
a048c8f5 | 866 | /* Information about the object file from which symbols should be read. */ |
2e4964ad | 867 | |
a048c8f5 | 868 | struct objfile *objfile; |
a048c8f5 | 869 | |
2670f34d | 870 | /* Set of relocation offsets to apply to each section. */ |
2e4964ad | 871 | |
2670f34d JG |
872 | struct section_offsets *section_offsets; |
873 | ||
bd5635a1 RP |
874 | /* Range of text addresses covered by this file; texthigh is the |
875 | beginning of the next section. */ | |
2e4964ad FF |
876 | |
877 | CORE_ADDR textlow; | |
878 | CORE_ADDR texthigh; | |
879 | ||
bd5635a1 RP |
880 | /* Array of pointers to all of the partial_symtab's which this one |
881 | depends on. Since this array can only be set to previous or | |
882 | the current (?) psymtab, this dependency tree is guaranteed not | |
d63aae7f JK |
883 | to have any loops. "depends on" means that symbols must be read |
884 | for the dependencies before being read for this psymtab; this is | |
885 | for type references in stabs, where if foo.c includes foo.h, declarations | |
886 | in foo.h may use type numbers defined in foo.c. For other debugging | |
887 | formats there may be no need to use dependencies. */ | |
2e4964ad | 888 | |
bd5635a1 | 889 | struct partial_symtab **dependencies; |
2e4964ad | 890 | |
bd5635a1 | 891 | int number_of_dependencies; |
2e4964ad | 892 | |
bd5635a1 RP |
893 | /* Global symbol list. This list will be sorted after readin to |
894 | improve access. Binary search will be the usual method of | |
895 | finding a symbol within it. globals_offset is an integer offset | |
4a35d6e9 | 896 | within global_psymbols[]. */ |
2e4964ad FF |
897 | |
898 | int globals_offset; | |
899 | int n_global_syms; | |
900 | ||
bd5635a1 RP |
901 | /* Static symbol list. This list will *not* be sorted after readin; |
902 | to find a symbol in it, exhaustive search must be used. This is | |
903 | reasonable because searches through this list will eventually | |
904 | lead to either the read in of a files symbols for real (assumed | |
905 | to take a *lot* of time; check) or an error (and we don't care | |
4a35d6e9 FF |
906 | how long errors take). This is an offset and size within |
907 | static_psymbols[]. */ | |
2e4964ad FF |
908 | |
909 | int statics_offset; | |
910 | int n_static_syms; | |
911 | ||
bd5635a1 RP |
912 | /* Pointer to symtab eventually allocated for this source file, 0 if |
913 | !readin or if we haven't looked for the symtab after it was readin. */ | |
2e4964ad | 914 | |
bd5635a1 | 915 | struct symtab *symtab; |
2e4964ad | 916 | |
bd5635a1 RP |
917 | /* Pointer to function which will read in the symtab corresponding to |
918 | this psymtab. */ | |
2e4964ad | 919 | |
b0246b3b | 920 | void (*read_symtab) PARAMS ((struct partial_symtab *)); |
2e4964ad | 921 | |
4a35d6e9 FF |
922 | /* Information that lets read_symtab() locate the part of the symbol table |
923 | that this psymtab corresponds to. This information is private to the | |
924 | format-dependent symbol reading routines. For further detail examine | |
925 | the various symbol reading modules. Should really be (void *) but is | |
926 | (char *) as with other such gdb variables. (FIXME) */ | |
2e4964ad | 927 | |
4a35d6e9 | 928 | char *read_symtab_private; |
2e4964ad FF |
929 | |
930 | /* Non-zero if the symtab corresponding to this psymtab has been readin */ | |
931 | ||
bd5635a1 RP |
932 | unsigned char readin; |
933 | }; | |
934 | ||
935 | /* A fast way to get from a psymtab to its symtab (after the first time). */ | |
2e4964ad FF |
936 | #define PSYMTAB_TO_SYMTAB(pst) \ |
937 | ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst)) | |
bd5635a1 | 938 | |
bd5635a1 | 939 | \f |
2e4964ad FF |
940 | /* The virtual function table is now an array of structures which have the |
941 | form { int16 offset, delta; void *pfn; }. | |
aec4cb91 | 942 | |
ea9cdf62 JK |
943 | In normal virtual function tables, OFFSET is unused. |
944 | DELTA is the amount which is added to the apparent object's base | |
945 | address in order to point to the actual object to which the | |
946 | virtual function should be applied. | |
0b28c260 JK |
947 | PFN is a pointer to the virtual function. |
948 | ||
949 | Note that this macro is g++ specific (FIXME). */ | |
bd5635a1 RP |
950 | |
951 | #define VTBL_FNADDR_OFFSET 2 | |
ea9cdf62 | 952 | |
2e4964ad FF |
953 | /* Macro that yields non-zero value iff NAME is the prefix for C++ operator |
954 | names. If you leave out the parenthesis here you will lose! | |
ea9cdf62 | 955 | Currently 'o' 'p' CPLUS_MARKER is used for both the symbol in the |
0b28c260 JK |
956 | symbol-file and the names in gdb's symbol table. |
957 | Note that this macro is g++ specific (FIXME). */ | |
ea9cdf62 | 958 | |
2e4964ad | 959 | #define OPNAME_PREFIX_P(NAME) \ |
81afee37 | 960 | ((NAME)[0] == 'o' && (NAME)[1] == 'p' && is_cplus_marker ((NAME)[2])) |
2e4964ad | 961 | |
ca6a826d | 962 | /* Macro that yields non-zero value iff NAME is the prefix for C++ vtbl |
3f687c78 SG |
963 | names. Note that this macro is g++ specific (FIXME). |
964 | '_vt$' is the old cfront-style vtables; '_VT$' is the new | |
965 | style, using thunks (where '$' is really CPLUS_MARKER). */ | |
ca6a826d | 966 | |
2e4964ad | 967 | #define VTBL_PREFIX_P(NAME) \ |
81afee37 | 968 | ((NAME)[0] == '_' \ |
3f687c78 | 969 | && (((NAME)[1] == 'V' && (NAME)[2] == 'T') \ |
81afee37 FF |
970 | || ((NAME)[1] == 'v' && (NAME)[2] == 't')) \ |
971 | && is_cplus_marker ((NAME)[3])) | |
2e4964ad | 972 | |
ca6a826d | 973 | /* Macro that yields non-zero value iff NAME is the prefix for C++ destructor |
0b28c260 | 974 | names. Note that this macro is g++ specific (FIXME). */ |
ca6a826d PS |
975 | |
976 | #define DESTRUCTOR_PREFIX_P(NAME) \ | |
81afee37 | 977 | ((NAME)[0] == '_' && is_cplus_marker ((NAME)[1]) && (NAME)[2] == '_') |
ca6a826d | 978 | |
bd5635a1 | 979 | \f |
2e4964ad FF |
980 | /* External variables and functions for the objects described above. */ |
981 | ||
982 | /* This symtab variable specifies the current file for printing source lines */ | |
983 | ||
984 | extern struct symtab *current_source_symtab; | |
985 | ||
986 | /* This is the next line to print for listing source lines. */ | |
987 | ||
988 | extern int current_source_line; | |
989 | ||
990 | /* See the comment in symfile.c about how current_objfile is used. */ | |
991 | ||
992 | extern struct objfile *current_objfile; | |
bd5635a1 | 993 | |
81afee37 FF |
994 | /* True if we are nested inside psymtab_to_symtab. */ |
995 | ||
996 | extern int currently_reading_symtab; | |
997 | ||
3f687c78 SG |
998 | /* From utils.c. */ |
999 | extern int demangle; | |
1000 | extern int asm_demangle; | |
1001 | ||
56e327b3 FF |
1002 | /* symtab.c lookup functions */ |
1003 | ||
1004 | /* lookup a symbol table by source file name */ | |
1005 | ||
b0246b3b FF |
1006 | extern struct symtab * |
1007 | lookup_symtab PARAMS ((char *)); | |
1008 | ||
56e327b3 FF |
1009 | /* lookup a symbol by name (optional block, optional symtab) */ |
1010 | ||
b0246b3b FF |
1011 | extern struct symbol * |
1012 | lookup_symbol PARAMS ((const char *, const struct block *, | |
e02a2ad9 | 1013 | const namespace_enum, int *, struct symtab **)); |
b0246b3b | 1014 | |
56e327b3 FF |
1015 | /* lookup a symbol by name, within a specified block */ |
1016 | ||
b0246b3b FF |
1017 | extern struct symbol * |
1018 | lookup_block_symbol PARAMS ((const struct block *, const char *, | |
e02a2ad9 | 1019 | const namespace_enum)); |
b0246b3b | 1020 | |
56e327b3 FF |
1021 | /* lookup a [struct, union, enum] by name, within a specified block */ |
1022 | ||
b0246b3b FF |
1023 | extern struct type * |
1024 | lookup_struct PARAMS ((char *, struct block *)); | |
1025 | ||
1026 | extern struct type * | |
1027 | lookup_union PARAMS ((char *, struct block *)); | |
1028 | ||
1029 | extern struct type * | |
1030 | lookup_enum PARAMS ((char *, struct block *)); | |
1031 | ||
56e327b3 FF |
1032 | /* lookup the function corresponding to the block */ |
1033 | ||
b0246b3b FF |
1034 | extern struct symbol * |
1035 | block_function PARAMS ((struct block *)); | |
1036 | ||
56e327b3 FF |
1037 | /* from blockframe.c: */ |
1038 | ||
1039 | /* lookup the function symbol corresponding to the address */ | |
1040 | ||
b0246b3b FF |
1041 | extern struct symbol * |
1042 | find_pc_function PARAMS ((CORE_ADDR)); | |
1043 | ||
56e327b3 FF |
1044 | /* lookup the function corresponding to the address and section */ |
1045 | ||
1046 | extern struct symbol * | |
1047 | find_pc_sect_function PARAMS ((CORE_ADDR, asection *)); | |
1048 | ||
1049 | /* lookup function from address, return name, start addr and end addr */ | |
1050 | ||
1051 | extern int find_pc_partial_function PARAMS ((CORE_ADDR, char **, | |
1052 | CORE_ADDR *, CORE_ADDR *)); | |
b0246b3b FF |
1053 | |
1054 | extern void | |
1055 | clear_pc_function_cache PARAMS ((void)); | |
1056 | ||
56e327b3 FF |
1057 | /* from symtab.c: */ |
1058 | ||
1059 | /* lookup partial symbol table by filename */ | |
1060 | ||
b0246b3b FF |
1061 | extern struct partial_symtab * |
1062 | lookup_partial_symtab PARAMS ((char *)); | |
1063 | ||
56e327b3 FF |
1064 | /* lookup partial symbol table by address */ |
1065 | ||
b0246b3b FF |
1066 | extern struct partial_symtab * |
1067 | find_pc_psymtab PARAMS ((CORE_ADDR)); | |
1068 | ||
56e327b3 FF |
1069 | /* lookup partial symbol table by address and section */ |
1070 | ||
1071 | extern struct partial_symtab * | |
1072 | find_pc_sect_psymtab PARAMS ((CORE_ADDR, asection *)); | |
1073 | ||
1074 | /* lookup full symbol table by address */ | |
1075 | ||
b0246b3b FF |
1076 | extern struct symtab * |
1077 | find_pc_symtab PARAMS ((CORE_ADDR)); | |
1078 | ||
56e327b3 FF |
1079 | /* lookup full symbol table by address and section */ |
1080 | ||
1081 | extern struct symtab * | |
1082 | find_pc_sect_symtab PARAMS ((CORE_ADDR, asection *)); | |
1083 | ||
1084 | /* lookup partial symbol by address */ | |
1085 | ||
b0246b3b FF |
1086 | extern struct partial_symbol * |
1087 | find_pc_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR)); | |
1088 | ||
56e327b3 FF |
1089 | /* lookup partial symbol by address and section */ |
1090 | ||
1091 | extern struct partial_symbol * | |
1092 | find_pc_sect_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR, asection *)); | |
1093 | ||
b0246b3b FF |
1094 | extern int |
1095 | find_pc_line_pc_range PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *)); | |
1096 | ||
1097 | extern int | |
1098 | contained_in PARAMS ((struct block *, struct block *)); | |
1099 | ||
1100 | extern void | |
1101 | reread_symbols PARAMS ((void)); | |
1102 | ||
404f69a8 JK |
1103 | /* Macro for name of symbol to indicate a file compiled with gcc. */ |
1104 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
1105 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
1106 | #endif | |
1107 | ||
1108 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ | |
1109 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
1110 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
1111 | #endif | |
1112 | ||
b0246b3b FF |
1113 | /* Functions for dealing with the minimal symbol table, really a misc |
1114 | address<->symbol mapping for things we don't have debug symbols for. */ | |
1115 | ||
21578747 JG |
1116 | extern void prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR, |
1117 | enum minimal_symbol_type, | |
1118 | struct objfile *)); | |
b0246b3b | 1119 | |
3f687c78 | 1120 | extern struct minimal_symbol *prim_record_minimal_symbol_and_info |
21578747 JG |
1121 | PARAMS ((const char *, CORE_ADDR, |
1122 | enum minimal_symbol_type, | |
1123 | char *info, int section, | |
56e327b3 | 1124 | asection *bfd_section, |
21578747 | 1125 | struct objfile *)); |
51b57ded | 1126 | |
3f687c78 SG |
1127 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
1128 | extern CORE_ADDR find_stab_function_addr PARAMS ((char *, | |
1129 | struct partial_symtab *, | |
1130 | struct objfile *)); | |
1131 | #endif | |
1132 | ||
b0246b3b | 1133 | extern struct minimal_symbol * |
3f687c78 SG |
1134 | lookup_minimal_symbol PARAMS ((const char *, const char *, struct objfile *)); |
1135 | ||
1136 | extern struct minimal_symbol * | |
1137 | lookup_minimal_symbol_text PARAMS ((const char *, const char *, struct objfile *)); | |
b0246b3b | 1138 | |
e74acce4 MA |
1139 | struct minimal_symbol * |
1140 | lookup_minimal_symbol_solib_trampoline PARAMS ((const char *, | |
1141 | const char *, | |
1142 | struct objfile *)); | |
1143 | ||
b0246b3b FF |
1144 | extern struct minimal_symbol * |
1145 | lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR)); | |
1146 | ||
56e327b3 FF |
1147 | extern struct minimal_symbol * |
1148 | lookup_minimal_symbol_by_pc_section PARAMS ((CORE_ADDR, asection *)); | |
1149 | ||
2fe3b329 PS |
1150 | extern struct minimal_symbol * |
1151 | lookup_solib_trampoline_symbol_by_pc PARAMS ((CORE_ADDR)); | |
1152 | ||
1153 | extern CORE_ADDR | |
1154 | find_solib_trampoline_target PARAMS ((CORE_ADDR)); | |
1155 | ||
b0246b3b FF |
1156 | extern void |
1157 | init_minimal_symbol_collection PARAMS ((void)); | |
1158 | ||
1159 | extern void | |
1160 | discard_minimal_symbols PARAMS ((int)); | |
1161 | ||
1162 | extern void | |
1163 | install_minimal_symbols PARAMS ((struct objfile *)); | |
bd5635a1 | 1164 | |
3f687c78 SG |
1165 | /* Sort all the minimal symbols in OBJFILE. */ |
1166 | ||
1167 | extern void msymbols_sort PARAMS ((struct objfile *objfile)); | |
1168 | ||
bd5635a1 RP |
1169 | struct symtab_and_line |
1170 | { | |
1171 | struct symtab *symtab; | |
56e327b3 | 1172 | asection *section; |
025abdfb JK |
1173 | /* Line number. Line numbers start at 1 and proceed through symtab->nlines. |
1174 | 0 is never a valid line number; it is used to indicate that line number | |
1175 | information is not available. */ | |
bd5635a1 | 1176 | int line; |
025abdfb | 1177 | |
bd5635a1 RP |
1178 | CORE_ADDR pc; |
1179 | CORE_ADDR end; | |
1180 | }; | |
1181 | ||
56e327b3 FF |
1182 | #define INIT_SAL(sal) { \ |
1183 | (sal)->symtab = 0; \ | |
1184 | (sal)->section = 0; \ | |
1185 | (sal)->line = 0; \ | |
1186 | (sal)->pc = 0; \ | |
1187 | (sal)->end = 0; \ | |
1188 | } | |
1189 | ||
bd5635a1 RP |
1190 | struct symtabs_and_lines |
1191 | { | |
1192 | struct symtab_and_line *sals; | |
1193 | int nelts; | |
1194 | }; | |
1195 | ||
2e4964ad FF |
1196 | /* Given a pc value, return line number it is in. Second arg nonzero means |
1197 | if pc is on the boundary use the previous statement's line number. */ | |
bd5635a1 | 1198 | |
b0246b3b FF |
1199 | extern struct symtab_and_line |
1200 | find_pc_line PARAMS ((CORE_ADDR, int)); | |
bd5635a1 | 1201 | |
56e327b3 FF |
1202 | /* Same function, but specify a section as well as an address */ |
1203 | ||
1204 | extern struct symtab_and_line | |
1205 | find_pc_sect_line PARAMS ((CORE_ADDR, asection *, int)); | |
1206 | ||
fb155ce3 JK |
1207 | /* Given an address, return the nearest symbol at or below it in memory. |
1208 | Optionally return the symtab it's from through 2nd arg, and the | |
1209 | address in inferior memory of the symbol through 3rd arg. */ | |
1210 | ||
1211 | extern struct symbol * | |
1212 | find_addr_symbol PARAMS ((CORE_ADDR, struct symtab **, CORE_ADDR *)); | |
1213 | ||
bd5635a1 | 1214 | /* Given a symtab and line number, return the pc there. */ |
b0246b3b FF |
1215 | |
1216 | extern CORE_ADDR | |
1217 | find_line_pc PARAMS ((struct symtab *, int)); | |
1218 | ||
1219 | extern int | |
404f69a8 | 1220 | find_line_pc_range PARAMS ((struct symtab_and_line, |
b86a1b3b | 1221 | CORE_ADDR *, CORE_ADDR *)); |
b0246b3b FF |
1222 | |
1223 | extern void | |
1224 | resolve_sal_pc PARAMS ((struct symtab_and_line *)); | |
bd5635a1 | 1225 | |
2e4964ad FF |
1226 | /* Given a string, return the line specified by it. For commands like "list" |
1227 | and "breakpoint". */ | |
bd5635a1 | 1228 | |
b0246b3b FF |
1229 | extern struct symtabs_and_lines |
1230 | decode_line_spec PARAMS ((char *, int)); | |
1231 | ||
1232 | extern struct symtabs_and_lines | |
1233 | decode_line_spec_1 PARAMS ((char *, int)); | |
1234 | ||
1235 | extern struct symtabs_and_lines | |
6f87ec4a | 1236 | decode_line_1 PARAMS ((char **, int, struct symtab *, int, char ***)); |
bd5635a1 | 1237 | |
35fcebce PB |
1238 | #if MAINTENANCE_CMDS |
1239 | ||
56e327b3 FF |
1240 | /* Symmisc.c */ |
1241 | ||
35fcebce PB |
1242 | void |
1243 | maintenance_print_symbols PARAMS ((char *, int)); | |
1244 | ||
1245 | void | |
1246 | maintenance_print_psymbols PARAMS ((char *, int)); | |
1247 | ||
1248 | void | |
1249 | maintenance_print_msymbols PARAMS ((char *, int)); | |
1250 | ||
1251 | void | |
1252 | maintenance_print_objfiles PARAMS ((char *, int)); | |
1253 | ||
2fe3b329 PS |
1254 | void |
1255 | maintenance_check_symtabs PARAMS ((char *, int)); | |
1256 | ||
56e327b3 FF |
1257 | /* maint.c */ |
1258 | ||
1259 | void | |
1260 | maintenance_print_statistics PARAMS ((char *, int)); | |
1261 | ||
35fcebce PB |
1262 | #endif |
1263 | ||
b0246b3b FF |
1264 | extern void |
1265 | free_symtab PARAMS ((struct symtab *)); | |
5c43db6b | 1266 | |
bd5635a1 | 1267 | /* Symbol-reading stuff in symfile.c and solib.c. */ |
b0246b3b FF |
1268 | |
1269 | extern struct symtab * | |
1270 | psymtab_to_symtab PARAMS ((struct partial_symtab *)); | |
1271 | ||
1272 | extern void | |
1273 | clear_solib PARAMS ((void)); | |
1274 | ||
1275 | extern struct objfile * | |
1276 | symbol_file_add PARAMS ((char *, int, CORE_ADDR, int, int, int)); | |
bd5635a1 RP |
1277 | |
1278 | /* source.c */ | |
bd5635a1 | 1279 | |
b0246b3b | 1280 | extern int |
b9298844 | 1281 | identify_source_line PARAMS ((struct symtab *, int, int, CORE_ADDR)); |
b0246b3b FF |
1282 | |
1283 | extern void | |
1284 | print_source_lines PARAMS ((struct symtab *, int, int, int)); | |
1285 | ||
1286 | extern void | |
1287 | forget_cached_source_info PARAMS ((void)); | |
1288 | ||
1289 | extern void | |
1290 | select_source_symtab PARAMS ((struct symtab *)); | |
1291 | ||
d63aae7f | 1292 | extern char **make_symbol_completion_list PARAMS ((char *, char *)); |
b0246b3b FF |
1293 | |
1294 | /* symtab.c */ | |
1295 | ||
1296 | extern struct partial_symtab * | |
1297 | find_main_psymtab PARAMS ((void)); | |
1298 | ||
1299 | /* blockframe.c */ | |
1300 | ||
1301 | extern struct blockvector * | |
1302 | blockvector_for_pc PARAMS ((CORE_ADDR, int *)); | |
bd5635a1 | 1303 | |
56e327b3 FF |
1304 | |
1305 | extern struct blockvector * | |
1306 | blockvector_for_pc_sect PARAMS ((CORE_ADDR, asection *, int *, | |
1307 | struct symtab *)); | |
b0246b3b | 1308 | /* symfile.c */ |
4a35d6e9 | 1309 | |
313dd520 JK |
1310 | extern void |
1311 | clear_symtab_users PARAMS ((void)); | |
1312 | ||
b0246b3b FF |
1313 | extern enum language |
1314 | deduce_language_from_filename PARAMS ((char *)); | |
4a35d6e9 | 1315 | |
3f687c78 SG |
1316 | /* symtab.c */ |
1317 | ||
1318 | extern int | |
1319 | in_prologue PARAMS ((CORE_ADDR pc, CORE_ADDR func_start)); | |
1320 | ||
56e327b3 FF |
1321 | extern struct symbol * |
1322 | fixup_symbol_section PARAMS ((struct symbol *, struct objfile *)); | |
1323 | ||
b0246b3b | 1324 | #endif /* !defined(SYMTAB_H) */ |