Commit | Line | Data |
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c906108c | 1 | /* Symbol table definitions for GDB. |
b6ba6518 | 2 | Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
17c5ed2c | 3 | 1997, 1998, 1999, 2000, 2001, 2002 |
c5aa993b | 4 | Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #if !defined (SYMTAB_H) | |
24 | #define SYMTAB_H 1 | |
25 | ||
5f8a3188 AC |
26 | /* Opaque declarations. */ |
27 | struct obstack; | |
c906108c SS |
28 | |
29 | /* Don't do this; it means that if some .o's are compiled with GNU C | |
30 | and some are not (easy to do accidentally the way we configure | |
31 | things; also it is a pain to have to "make clean" every time you | |
32 | want to switch compilers), then GDB dies a horrible death. */ | |
33 | /* GNU C supports enums that are bitfields. Some compilers don't. */ | |
34 | #if 0 && defined(__GNUC__) && !defined(BYTE_BITFIELD) | |
35 | #define BYTE_BITFIELD :8; | |
36 | #else | |
c5aa993b | 37 | #define BYTE_BITFIELD /*nothing */ |
c906108c SS |
38 | #endif |
39 | ||
40 | /* Define a structure for the information that is common to all symbol types, | |
41 | including minimal symbols, partial symbols, and full symbols. In a | |
42 | multilanguage environment, some language specific information may need to | |
43 | be recorded along with each symbol. | |
44 | ||
45 | These fields are ordered to encourage good packing, since we frequently | |
46 | have tens or hundreds of thousands of these. */ | |
47 | ||
48 | struct general_symbol_info | |
17c5ed2c DC |
49 | { |
50 | /* Name of the symbol. This is a required field. Storage for the name is | |
51 | allocated on the psymbol_obstack or symbol_obstack for the associated | |
52 | objfile. */ | |
c906108c | 53 | |
17c5ed2c | 54 | char *name; |
c906108c | 55 | |
17c5ed2c DC |
56 | /* Value of the symbol. Which member of this union to use, and what |
57 | it means, depends on what kind of symbol this is and its | |
58 | SYMBOL_CLASS. See comments there for more details. All of these | |
59 | are in host byte order (though what they point to might be in | |
60 | target byte order, e.g. LOC_CONST_BYTES). */ | |
c906108c | 61 | |
17c5ed2c DC |
62 | union |
63 | { | |
64 | /* The fact that this is a long not a LONGEST mainly limits the | |
65 | range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not | |
66 | sure that is a big deal. */ | |
67 | long ivalue; | |
c906108c | 68 | |
17c5ed2c | 69 | struct block *block; |
c906108c | 70 | |
17c5ed2c | 71 | char *bytes; |
c906108c | 72 | |
17c5ed2c | 73 | CORE_ADDR address; |
c906108c | 74 | |
17c5ed2c | 75 | /* for opaque typedef struct chain */ |
c906108c | 76 | |
17c5ed2c DC |
77 | struct symbol *chain; |
78 | } | |
79 | value; | |
c906108c | 80 | |
17c5ed2c DC |
81 | /* Since one and only one language can apply, wrap the language specific |
82 | information inside a union. */ | |
c906108c | 83 | |
17c5ed2c DC |
84 | union |
85 | { | |
86 | struct cplus_specific /* For C++ */ | |
87 | /* and Java */ | |
88 | { | |
89 | char *demangled_name; | |
90 | } | |
91 | cplus_specific; | |
ff4cb3e8 AF |
92 | struct objc_specific |
93 | { | |
94 | char *demangled_name; | |
95 | } | |
96 | objc_specific; | |
db034ac5 | 97 | #if 0 |
17c5ed2c DC |
98 | /* OBSOLETE struct chill_specific *//* For Chill */ |
99 | /* OBSOLETE { */ | |
100 | /* OBSOLETE char *demangled_name; */ | |
101 | /* OBSOLETE } */ | |
102 | /* OBSOLETE chill_specific; */ | |
db034ac5 | 103 | #endif |
17c5ed2c DC |
104 | } |
105 | language_specific; | |
c5aa993b | 106 | |
17c5ed2c DC |
107 | /* Record the source code language that applies to this symbol. |
108 | This is used to select one of the fields from the language specific | |
109 | union above. */ | |
c5aa993b | 110 | |
17c5ed2c | 111 | enum language language BYTE_BITFIELD; |
c5aa993b | 112 | |
17c5ed2c DC |
113 | /* Which section is this symbol in? This is an index into |
114 | section_offsets for this objfile. Negative means that the symbol | |
115 | does not get relocated relative to a section. | |
116 | Disclaimer: currently this is just used for xcoff, so don't | |
117 | expect all symbol-reading code to set it correctly (the ELF code | |
118 | also tries to set it correctly). */ | |
c5aa993b | 119 | |
17c5ed2c | 120 | short section; |
c5aa993b | 121 | |
17c5ed2c | 122 | /* The bfd section associated with this symbol. */ |
c5aa993b | 123 | |
17c5ed2c DC |
124 | asection *bfd_section; |
125 | }; | |
c906108c | 126 | |
a14ed312 | 127 | extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, asection *); |
c906108c | 128 | |
88cda038 EZ |
129 | /* Note that all the following SYMBOL_* macros are used with the |
130 | SYMBOL argument being either a partial symbol, a minimal symbol or | |
131 | a full symbol. All three types have a ginfo field. In particular | |
132 | the SYMBOL_INIT_LANGUAGE_SPECIFIC, SYMBOL_INIT_DEMANGLED_NAME, | |
133 | SYMBOL_DEMANGLED_NAME macros cannot be entirely substituted by | |
134 | functions, unless the callers are changed to pass in the ginfo | |
135 | field only, instead of the SYMBOL parameter. */ | |
136 | ||
c906108c SS |
137 | #define SYMBOL_NAME(symbol) (symbol)->ginfo.name |
138 | #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.ivalue | |
139 | #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address | |
140 | #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes | |
141 | #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block | |
142 | #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain | |
143 | #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.language | |
144 | #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section | |
145 | #define SYMBOL_BFD_SECTION(symbol) (symbol)->ginfo.bfd_section | |
146 | ||
147 | #define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \ | |
148 | (symbol)->ginfo.language_specific.cplus_specific.demangled_name | |
149 | ||
89aad1f9 | 150 | /* Initializes the language dependent portion of a symbol |
c906108c | 151 | depending upon the language for the symbol. */ |
89aad1f9 EZ |
152 | #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \ |
153 | (symbol_init_language_specific (&(symbol)->ginfo, (language))) | |
154 | extern void symbol_init_language_specific (struct general_symbol_info *symbol, | |
155 | enum language language); | |
c906108c | 156 | |
12af6855 JB |
157 | #define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \ |
158 | (symbol_init_demangled_name (&symbol->ginfo, (obstack))) | |
159 | extern void symbol_init_demangled_name (struct general_symbol_info *symbol, | |
17c5ed2c DC |
160 | struct obstack *obstack); |
161 | ||
9cc0d196 EZ |
162 | /* Return the demangled name for a symbol based on the language for |
163 | that symbol. If no demangled name exists, return NULL. */ | |
164 | #define SYMBOL_DEMANGLED_NAME(symbol) \ | |
165 | (symbol_demangled_name (&(symbol)->ginfo)) | |
166 | extern char *symbol_demangled_name (struct general_symbol_info *symbol); | |
c906108c | 167 | |
db034ac5 AC |
168 | /* OBSOLETE #define SYMBOL_CHILL_DEMANGLED_NAME(symbol) */ |
169 | /* OBSOLETE (symbol)->ginfo.language_specific.chill_specific.demangled_name */ | |
c906108c | 170 | |
ff4cb3e8 AF |
171 | #define SYMBOL_OBJC_DEMANGLED_NAME(symbol) \ |
172 | (symbol)->ginfo.language_specific.objc_specific.demangled_name | |
173 | ||
c906108c SS |
174 | /* Macro that returns the "natural source name" of a symbol. In C++ this is |
175 | the "demangled" form of the name if demangle is on and the "mangled" form | |
176 | of the name if demangle is off. In other languages this is just the | |
177 | symbol name. The result should never be NULL. */ | |
178 | ||
179 | #define SYMBOL_SOURCE_NAME(symbol) \ | |
180 | (demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
181 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
182 | : SYMBOL_NAME (symbol)) | |
183 | ||
184 | /* Macro that returns the "natural assembly name" of a symbol. In C++ this is | |
185 | the "mangled" form of the name if demangle is off, or if demangle is on and | |
186 | asm_demangle is off. Otherwise if asm_demangle is on it is the "demangled" | |
187 | form. In other languages this is just the symbol name. The result should | |
188 | never be NULL. */ | |
189 | ||
190 | #define SYMBOL_LINKAGE_NAME(symbol) \ | |
191 | (demangle && asm_demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
192 | ? SYMBOL_DEMANGLED_NAME (symbol) \ | |
193 | : SYMBOL_NAME (symbol)) | |
194 | ||
195 | /* Macro that tests a symbol for a match against a specified name string. | |
196 | First test the unencoded name, then looks for and test a C++ encoded | |
197 | name if it exists. Note that whitespace is ignored while attempting to | |
198 | match a C++ encoded name, so that "foo::bar(int,long)" is the same as | |
199 | "foo :: bar (int, long)". | |
200 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
201 | ||
202 | #define SYMBOL_MATCHES_NAME(symbol, name) \ | |
203 | (STREQ (SYMBOL_NAME (symbol), (name)) \ | |
204 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
205 | && strcmp_iw (SYMBOL_DEMANGLED_NAME (symbol), (name)) == 0)) | |
c5aa993b | 206 | |
c906108c SS |
207 | /* Macro that tests a symbol for an re-match against the last compiled regular |
208 | expression. First test the unencoded name, then look for and test a C++ | |
209 | encoded name if it exists. | |
210 | Evaluates to zero if the match fails, or nonzero if it succeeds. */ | |
211 | ||
212 | #define SYMBOL_MATCHES_REGEXP(symbol) \ | |
213 | (re_exec (SYMBOL_NAME (symbol)) != 0 \ | |
214 | || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \ | |
215 | && re_exec (SYMBOL_DEMANGLED_NAME (symbol)) != 0)) | |
c5aa993b | 216 | |
c906108c SS |
217 | /* Define a simple structure used to hold some very basic information about |
218 | all defined global symbols (text, data, bss, abs, etc). The only required | |
219 | information is the general_symbol_info. | |
220 | ||
221 | In many cases, even if a file was compiled with no special options for | |
222 | debugging at all, as long as was not stripped it will contain sufficient | |
223 | information to build a useful minimal symbol table using this structure. | |
224 | Even when a file contains enough debugging information to build a full | |
225 | symbol table, these minimal symbols are still useful for quickly mapping | |
226 | between names and addresses, and vice versa. They are also sometimes | |
227 | used to figure out what full symbol table entries need to be read in. */ | |
228 | ||
229 | struct minimal_symbol | |
17c5ed2c | 230 | { |
c906108c | 231 | |
17c5ed2c | 232 | /* The general symbol info required for all types of symbols. |
c906108c | 233 | |
17c5ed2c DC |
234 | The SYMBOL_VALUE_ADDRESS contains the address that this symbol |
235 | corresponds to. */ | |
c906108c | 236 | |
17c5ed2c | 237 | struct general_symbol_info ginfo; |
c906108c | 238 | |
17c5ed2c DC |
239 | /* The info field is available for caching machine-specific information |
240 | so it doesn't have to rederive the info constantly (over a serial line). | |
241 | It is initialized to zero and stays that way until target-dependent code | |
242 | sets it. Storage for any data pointed to by this field should be allo- | |
243 | cated on the symbol_obstack for the associated objfile. | |
244 | The type would be "void *" except for reasons of compatibility with older | |
245 | compilers. This field is optional. | |
c906108c | 246 | |
17c5ed2c DC |
247 | Currently, the AMD 29000 tdep.c uses it to remember things it has decoded |
248 | from the instructions in the function header, and the MIPS-16 code uses | |
249 | it to identify 16-bit procedures. */ | |
c906108c | 250 | |
17c5ed2c | 251 | char *info; |
c906108c SS |
252 | |
253 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING | |
17c5ed2c DC |
254 | /* Which source file is this symbol in? Only relevant for mst_file_*. */ |
255 | char *filename; | |
c906108c SS |
256 | #endif |
257 | ||
17c5ed2c DC |
258 | /* Classification types for this symbol. These should be taken as "advisory |
259 | only", since if gdb can't easily figure out a classification it simply | |
260 | selects mst_unknown. It may also have to guess when it can't figure out | |
261 | which is a better match between two types (mst_data versus mst_bss) for | |
262 | example. Since the minimal symbol info is sometimes derived from the | |
263 | BFD library's view of a file, we need to live with what information bfd | |
264 | supplies. */ | |
265 | ||
266 | enum minimal_symbol_type | |
267 | { | |
268 | mst_unknown = 0, /* Unknown type, the default */ | |
269 | mst_text, /* Generally executable instructions */ | |
270 | mst_data, /* Generally initialized data */ | |
271 | mst_bss, /* Generally uninitialized data */ | |
272 | mst_abs, /* Generally absolute (nonrelocatable) */ | |
273 | /* GDB uses mst_solib_trampoline for the start address of a shared | |
274 | library trampoline entry. Breakpoints for shared library functions | |
275 | are put there if the shared library is not yet loaded. | |
276 | After the shared library is loaded, lookup_minimal_symbol will | |
277 | prefer the minimal symbol from the shared library (usually | |
278 | a mst_text symbol) over the mst_solib_trampoline symbol, and the | |
279 | breakpoints will be moved to their true address in the shared | |
280 | library via breakpoint_re_set. */ | |
281 | mst_solib_trampoline, /* Shared library trampoline code */ | |
282 | /* For the mst_file* types, the names are only guaranteed to be unique | |
283 | within a given .o file. */ | |
284 | mst_file_text, /* Static version of mst_text */ | |
285 | mst_file_data, /* Static version of mst_data */ | |
286 | mst_file_bss /* Static version of mst_bss */ | |
287 | } | |
288 | type BYTE_BITFIELD; | |
289 | ||
290 | /* Minimal symbols with the same hash key are kept on a linked | |
291 | list. This is the link. */ | |
292 | ||
293 | struct minimal_symbol *hash_next; | |
294 | ||
295 | /* Minimal symbols are stored in two different hash tables. This is | |
296 | the `next' pointer for the demangled hash table. */ | |
297 | ||
298 | struct minimal_symbol *demangled_hash_next; | |
299 | }; | |
c906108c SS |
300 | |
301 | #define MSYMBOL_INFO(msymbol) (msymbol)->info | |
302 | #define MSYMBOL_TYPE(msymbol) (msymbol)->type | |
c906108c | 303 | \f |
c5aa993b | 304 | |
17c5ed2c | 305 | |
c906108c SS |
306 | /* All of the name-scope contours of the program |
307 | are represented by `struct block' objects. | |
308 | All of these objects are pointed to by the blockvector. | |
309 | ||
310 | Each block represents one name scope. | |
311 | Each lexical context has its own block. | |
312 | ||
313 | The blockvector begins with some special blocks. | |
314 | The GLOBAL_BLOCK contains all the symbols defined in this compilation | |
315 | whose scope is the entire program linked together. | |
316 | The STATIC_BLOCK contains all the symbols whose scope is the | |
317 | entire compilation excluding other separate compilations. | |
318 | Blocks starting with the FIRST_LOCAL_BLOCK are not special. | |
319 | ||
320 | Each block records a range of core addresses for the code that | |
321 | is in the scope of the block. The STATIC_BLOCK and GLOBAL_BLOCK | |
322 | give, for the range of code, the entire range of code produced | |
323 | by the compilation that the symbol segment belongs to. | |
324 | ||
325 | The blocks appear in the blockvector | |
326 | in order of increasing starting-address, | |
327 | and, within that, in order of decreasing ending-address. | |
328 | ||
329 | This implies that within the body of one function | |
330 | the blocks appear in the order of a depth-first tree walk. */ | |
331 | ||
332 | struct blockvector | |
17c5ed2c DC |
333 | { |
334 | /* Number of blocks in the list. */ | |
335 | int nblocks; | |
336 | /* The blocks themselves. */ | |
337 | struct block *block[1]; | |
338 | }; | |
c906108c SS |
339 | |
340 | #define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks | |
341 | #define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n] | |
342 | ||
343 | /* Special block numbers */ | |
344 | ||
345 | #define GLOBAL_BLOCK 0 | |
346 | #define STATIC_BLOCK 1 | |
347 | #define FIRST_LOCAL_BLOCK 2 | |
348 | ||
349 | struct block | |
17c5ed2c | 350 | { |
c906108c | 351 | |
17c5ed2c | 352 | /* Addresses in the executable code that are in this block. */ |
c906108c | 353 | |
17c5ed2c DC |
354 | CORE_ADDR startaddr; |
355 | CORE_ADDR endaddr; | |
c906108c | 356 | |
17c5ed2c DC |
357 | /* The symbol that names this block, if the block is the body of a |
358 | function; otherwise, zero. */ | |
c906108c | 359 | |
17c5ed2c | 360 | struct symbol *function; |
c906108c | 361 | |
17c5ed2c | 362 | /* The `struct block' for the containing block, or 0 if none. |
c906108c | 363 | |
17c5ed2c DC |
364 | The superblock of a top-level local block (i.e. a function in the |
365 | case of C) is the STATIC_BLOCK. The superblock of the | |
366 | STATIC_BLOCK is the GLOBAL_BLOCK. */ | |
c906108c | 367 | |
17c5ed2c | 368 | struct block *superblock; |
c906108c | 369 | |
17c5ed2c DC |
370 | /* Version of GCC used to compile the function corresponding |
371 | to this block, or 0 if not compiled with GCC. When possible, | |
372 | GCC should be compatible with the native compiler, or if that | |
373 | is not feasible, the differences should be fixed during symbol | |
374 | reading. As of 16 Apr 93, this flag is never used to distinguish | |
375 | between gcc2 and the native compiler. | |
c906108c | 376 | |
17c5ed2c DC |
377 | If there is no function corresponding to this block, this meaning |
378 | of this flag is undefined. */ | |
c906108c | 379 | |
17c5ed2c | 380 | unsigned char gcc_compile_flag; |
c906108c | 381 | |
17c5ed2c DC |
382 | /* The symbols for this block are either in a simple linear list or |
383 | in a simple hashtable. Blocks which correspond to a function | |
384 | (which have a list of symbols corresponding to arguments) use | |
385 | a linear list, as do some older symbol readers (currently only | |
386 | mdebugread and dstread). Other blocks are hashed. | |
261397f8 | 387 | |
17c5ed2c DC |
388 | The hashtable uses the same hash function as the minsym hashtables, |
389 | found in minsyms.c:minsym_hash_iw. Symbols are hashed based on | |
390 | their demangled name if appropriate, and on their name otherwise. | |
391 | The hash function ignores space, and stops at the beginning of the | |
392 | argument list if any. | |
261397f8 | 393 | |
17c5ed2c DC |
394 | The table is laid out in NSYMS/5 buckets and symbols are chained via |
395 | their hash_next field. */ | |
261397f8 | 396 | |
17c5ed2c | 397 | /* If this is really a hashtable of the symbols, this flag is 1. */ |
261397f8 | 398 | |
17c5ed2c | 399 | unsigned char hashtable; |
261397f8 | 400 | |
17c5ed2c | 401 | /* Number of local symbols. */ |
c906108c | 402 | |
17c5ed2c | 403 | int nsyms; |
c906108c | 404 | |
17c5ed2c DC |
405 | /* The symbols. If some of them are arguments, then they must be |
406 | in the order in which we would like to print them. */ | |
c906108c | 407 | |
17c5ed2c DC |
408 | struct symbol *sym[1]; |
409 | }; | |
c906108c SS |
410 | |
411 | #define BLOCK_START(bl) (bl)->startaddr | |
412 | #define BLOCK_END(bl) (bl)->endaddr | |
c906108c SS |
413 | #define BLOCK_FUNCTION(bl) (bl)->function |
414 | #define BLOCK_SUPERBLOCK(bl) (bl)->superblock | |
415 | #define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag | |
261397f8 | 416 | #define BLOCK_HASHTABLE(bl) (bl)->hashtable |
c906108c | 417 | |
261397f8 DJ |
418 | /* For blocks without a hashtable (BLOCK_HASHTABLE (bl) == 0) only. */ |
419 | #define BLOCK_NSYMS(bl) (bl)->nsyms | |
420 | #define BLOCK_SYM(bl, n) (bl)->sym[n] | |
421 | ||
422 | /* For blocks with a hashtable, but these are valid for non-hashed blocks as | |
423 | well - each symbol will appear to be one bucket by itself. */ | |
424 | #define BLOCK_BUCKETS(bl) (bl)->nsyms | |
425 | #define BLOCK_BUCKET(bl, n) (bl)->sym[n] | |
426 | ||
427 | /* Macro used to set the size of a hashtable for N symbols. */ | |
428 | #define BLOCK_HASHTABLE_SIZE(n) ((n)/5 + 1) | |
429 | ||
430 | /* Macro to loop through all symbols in a block BL, in no particular order. | |
431 | i counts which bucket we are in, and sym points to the current symbol. */ | |
432 | ||
433 | #define ALL_BLOCK_SYMBOLS(bl, i, sym) \ | |
434 | for ((i) = 0; (i) < BLOCK_BUCKETS ((bl)); (i)++) \ | |
435 | for ((sym) = BLOCK_BUCKET ((bl), (i)); (sym); \ | |
436 | (sym) = (sym)->hash_next) | |
e88c90f2 | 437 | |
c906108c SS |
438 | /* Nonzero if symbols of block BL should be sorted alphabetically. |
439 | Don't sort a block which corresponds to a function. If we did the | |
440 | sorting would have to preserve the order of the symbols for the | |
261397f8 | 441 | arguments. Also don't sort any block that we chose to hash. */ |
c906108c | 442 | |
261397f8 DJ |
443 | #define BLOCK_SHOULD_SORT(bl) (! BLOCK_HASHTABLE (bl) \ |
444 | && BLOCK_FUNCTION (bl) == NULL) | |
c906108c | 445 | \f |
c5aa993b | 446 | |
c906108c SS |
447 | /* Represent one symbol name; a variable, constant, function or typedef. */ |
448 | ||
449 | /* Different name spaces for symbols. Looking up a symbol specifies a | |
450 | namespace and ignores symbol definitions in other name spaces. */ | |
c906108c | 451 | |
c5aa993b | 452 | typedef enum |
17c5ed2c DC |
453 | { |
454 | /* UNDEF_NAMESPACE is used when a namespace has not been discovered or | |
455 | none of the following apply. This usually indicates an error either | |
456 | in the symbol information or in gdb's handling of symbols. */ | |
c906108c | 457 | |
17c5ed2c | 458 | UNDEF_NAMESPACE, |
c906108c | 459 | |
17c5ed2c DC |
460 | /* VAR_NAMESPACE is the usual namespace. In C, this contains variables, |
461 | function names, typedef names and enum type values. */ | |
c906108c | 462 | |
17c5ed2c | 463 | VAR_NAMESPACE, |
c906108c | 464 | |
17c5ed2c DC |
465 | /* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names. |
466 | Thus, if `struct foo' is used in a C program, it produces a symbol named | |
467 | `foo' in the STRUCT_NAMESPACE. */ | |
c906108c | 468 | |
17c5ed2c | 469 | STRUCT_NAMESPACE, |
c906108c | 470 | |
17c5ed2c DC |
471 | /* LABEL_NAMESPACE may be used for names of labels (for gotos); |
472 | currently it is not used and labels are not recorded at all. */ | |
c906108c | 473 | |
17c5ed2c | 474 | LABEL_NAMESPACE, |
c906108c | 475 | |
17c5ed2c DC |
476 | /* Searching namespaces. These overlap with VAR_NAMESPACE, providing |
477 | some granularity with the search_symbols function. */ | |
c906108c | 478 | |
17c5ed2c DC |
479 | /* Everything in VAR_NAMESPACE minus FUNCTIONS_-, TYPES_-, and |
480 | METHODS_NAMESPACE */ | |
481 | VARIABLES_NAMESPACE, | |
c906108c | 482 | |
17c5ed2c DC |
483 | /* All functions -- for some reason not methods, though. */ |
484 | FUNCTIONS_NAMESPACE, | |
c906108c | 485 | |
17c5ed2c DC |
486 | /* All defined types */ |
487 | TYPES_NAMESPACE, | |
c906108c | 488 | |
17c5ed2c DC |
489 | /* All class methods -- why is this separated out? */ |
490 | METHODS_NAMESPACE | |
491 | } | |
c5aa993b | 492 | namespace_enum; |
c906108c SS |
493 | |
494 | /* An address-class says where to find the value of a symbol. */ | |
495 | ||
496 | enum address_class | |
17c5ed2c DC |
497 | { |
498 | /* Not used; catches errors */ | |
c5aa993b | 499 | |
17c5ed2c | 500 | LOC_UNDEF, |
c906108c | 501 | |
17c5ed2c | 502 | /* Value is constant int SYMBOL_VALUE, host byteorder */ |
c906108c | 503 | |
17c5ed2c | 504 | LOC_CONST, |
c906108c | 505 | |
17c5ed2c | 506 | /* Value is at fixed address SYMBOL_VALUE_ADDRESS */ |
c906108c | 507 | |
17c5ed2c | 508 | LOC_STATIC, |
c906108c | 509 | |
17c5ed2c | 510 | /* Value is in register. SYMBOL_VALUE is the register number. */ |
c906108c | 511 | |
17c5ed2c | 512 | LOC_REGISTER, |
c906108c | 513 | |
17c5ed2c | 514 | /* It's an argument; the value is at SYMBOL_VALUE offset in arglist. */ |
c906108c | 515 | |
17c5ed2c | 516 | LOC_ARG, |
c906108c | 517 | |
17c5ed2c | 518 | /* Value address is at SYMBOL_VALUE offset in arglist. */ |
c906108c | 519 | |
17c5ed2c | 520 | LOC_REF_ARG, |
c906108c | 521 | |
17c5ed2c DC |
522 | /* Value is in register number SYMBOL_VALUE. Just like LOC_REGISTER |
523 | except this is an argument. Probably the cleaner way to handle | |
524 | this would be to separate address_class (which would include | |
525 | separate ARG and LOCAL to deal with FRAME_ARGS_ADDRESS versus | |
526 | FRAME_LOCALS_ADDRESS), and an is_argument flag. | |
c906108c | 527 | |
17c5ed2c DC |
528 | For some symbol formats (stabs, for some compilers at least), |
529 | the compiler generates two symbols, an argument and a register. | |
530 | In some cases we combine them to a single LOC_REGPARM in symbol | |
531 | reading, but currently not for all cases (e.g. it's passed on the | |
532 | stack and then loaded into a register). */ | |
c906108c | 533 | |
17c5ed2c | 534 | LOC_REGPARM, |
c906108c | 535 | |
17c5ed2c DC |
536 | /* Value is in specified register. Just like LOC_REGPARM except the |
537 | register holds the address of the argument instead of the argument | |
538 | itself. This is currently used for the passing of structs and unions | |
539 | on sparc and hppa. It is also used for call by reference where the | |
540 | address is in a register, at least by mipsread.c. */ | |
c906108c | 541 | |
17c5ed2c | 542 | LOC_REGPARM_ADDR, |
c906108c | 543 | |
17c5ed2c | 544 | /* Value is a local variable at SYMBOL_VALUE offset in stack frame. */ |
c906108c | 545 | |
17c5ed2c | 546 | LOC_LOCAL, |
c906108c | 547 | |
17c5ed2c DC |
548 | /* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace |
549 | STRUCT_NAMESPACE all have this class. */ | |
c906108c | 550 | |
17c5ed2c | 551 | LOC_TYPEDEF, |
c906108c | 552 | |
17c5ed2c | 553 | /* Value is address SYMBOL_VALUE_ADDRESS in the code */ |
c906108c | 554 | |
17c5ed2c | 555 | LOC_LABEL, |
c906108c | 556 | |
17c5ed2c DC |
557 | /* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'. |
558 | In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address | |
559 | of the block. Function names have this class. */ | |
c906108c | 560 | |
17c5ed2c | 561 | LOC_BLOCK, |
c906108c | 562 | |
17c5ed2c DC |
563 | /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in |
564 | target byte order. */ | |
c906108c | 565 | |
17c5ed2c | 566 | LOC_CONST_BYTES, |
c906108c | 567 | |
17c5ed2c DC |
568 | /* Value is arg at SYMBOL_VALUE offset in stack frame. Differs from |
569 | LOC_LOCAL in that symbol is an argument; differs from LOC_ARG in | |
570 | that we find it in the frame (FRAME_LOCALS_ADDRESS), not in the | |
571 | arglist (FRAME_ARGS_ADDRESS). Added for i960, which passes args | |
572 | in regs then copies to frame. */ | |
c906108c | 573 | |
17c5ed2c | 574 | LOC_LOCAL_ARG, |
c906108c | 575 | |
17c5ed2c DC |
576 | /* Value is at SYMBOL_VALUE offset from the current value of |
577 | register number SYMBOL_BASEREG. This exists mainly for the same | |
578 | things that LOC_LOCAL and LOC_ARG do; but we need to do this | |
579 | instead because on 88k DWARF gives us the offset from the | |
580 | frame/stack pointer, rather than the offset from the "canonical | |
581 | frame address" used by COFF, stabs, etc., and we don't know how | |
582 | to convert between these until we start examining prologues. | |
c906108c | 583 | |
17c5ed2c DC |
584 | Note that LOC_BASEREG is much less general than a DWARF expression. |
585 | We don't need the generality (at least not yet), and storing a general | |
586 | DWARF expression would presumably take up more space than the existing | |
587 | scheme. */ | |
c906108c | 588 | |
17c5ed2c | 589 | LOC_BASEREG, |
c906108c | 590 | |
17c5ed2c | 591 | /* Same as LOC_BASEREG but it is an argument. */ |
c906108c | 592 | |
17c5ed2c | 593 | LOC_BASEREG_ARG, |
c906108c | 594 | |
17c5ed2c DC |
595 | /* Value is at fixed address, but the address of the variable has |
596 | to be determined from the minimal symbol table whenever the | |
597 | variable is referenced. | |
598 | This happens if debugging information for a global symbol is | |
599 | emitted and the corresponding minimal symbol is defined | |
600 | in another object file or runtime common storage. | |
601 | The linker might even remove the minimal symbol if the global | |
602 | symbol is never referenced, in which case the symbol remains | |
603 | unresolved. */ | |
c906108c | 604 | |
17c5ed2c | 605 | LOC_UNRESOLVED, |
c906108c | 606 | |
17c5ed2c | 607 | /* Value is at a thread-specific location calculated by a |
407caf07 | 608 | target-specific method. This is used only by hppa. */ |
c906108c | 609 | |
407caf07 | 610 | LOC_HP_THREAD_LOCAL_STATIC, |
c906108c | 611 | |
9d774e44 EZ |
612 | /* Value is at a thread-specific location calculated by a |
613 | target-specific method. SYMBOL_OBJFILE gives the object file | |
614 | in which the symbol is defined; the symbol's value is the | |
615 | offset into that objfile's thread-local storage for the current | |
616 | thread. */ | |
617 | ||
618 | LOC_THREAD_LOCAL_STATIC, | |
619 | ||
17c5ed2c DC |
620 | /* The variable does not actually exist in the program. |
621 | The value is ignored. */ | |
c906108c | 622 | |
17c5ed2c | 623 | LOC_OPTIMIZED_OUT, |
c906108c | 624 | |
17c5ed2c DC |
625 | /* The variable is static, but actually lives at * (address). |
626 | * I.e. do an extra indirection to get to it. | |
627 | * This is used on HP-UX to get at globals that are allocated | |
628 | * in shared libraries, where references from images other | |
629 | * than the one where the global was allocated are done | |
630 | * with a level of indirection. | |
631 | */ | |
c906108c | 632 | |
17c5ed2c DC |
633 | LOC_INDIRECT |
634 | }; | |
c906108c SS |
635 | |
636 | /* Linked list of symbol's live ranges. */ | |
637 | ||
c5aa993b | 638 | struct range_list |
17c5ed2c DC |
639 | { |
640 | CORE_ADDR start; | |
641 | CORE_ADDR end; | |
642 | struct range_list *next; | |
643 | }; | |
c906108c SS |
644 | |
645 | /* Linked list of aliases for a particular main/primary symbol. */ | |
646 | struct alias_list | |
17c5ed2c DC |
647 | { |
648 | struct symbol *sym; | |
649 | struct alias_list *next; | |
650 | }; | |
c906108c SS |
651 | |
652 | struct symbol | |
17c5ed2c | 653 | { |
c906108c | 654 | |
17c5ed2c | 655 | /* The general symbol info required for all types of symbols. */ |
c906108c | 656 | |
17c5ed2c | 657 | struct general_symbol_info ginfo; |
c906108c | 658 | |
17c5ed2c | 659 | /* Data type of value */ |
c906108c | 660 | |
17c5ed2c | 661 | struct type *type; |
c906108c | 662 | |
17c5ed2c | 663 | /* Name space code. */ |
c906108c SS |
664 | |
665 | #ifdef __MFC4__ | |
17c5ed2c DC |
666 | /* FIXME: don't conflict with C++'s namespace */ |
667 | /* would be safer to do a global change for all namespace identifiers. */ | |
c5aa993b | 668 | #define namespace _namespace |
c906108c | 669 | #endif |
17c5ed2c | 670 | namespace_enum namespace BYTE_BITFIELD; |
c906108c | 671 | |
17c5ed2c | 672 | /* Address class */ |
c906108c | 673 | |
17c5ed2c | 674 | enum address_class aclass BYTE_BITFIELD; |
c906108c | 675 | |
17c5ed2c DC |
676 | /* Line number of definition. FIXME: Should we really make the assumption |
677 | that nobody will try to debug files longer than 64K lines? What about | |
678 | machine generated programs? */ | |
c906108c | 679 | |
17c5ed2c | 680 | unsigned short line; |
c906108c | 681 | |
17c5ed2c DC |
682 | /* Some symbols require an additional value to be recorded on a per- |
683 | symbol basis. Stash those values here. */ | |
c5aa993b | 684 | |
17c5ed2c DC |
685 | union |
686 | { | |
687 | /* Used by LOC_BASEREG and LOC_BASEREG_ARG. */ | |
688 | short basereg; | |
9d774e44 EZ |
689 | |
690 | /* Used by LOC_THREAD_LOCAL_STATIC. The objfile in which this | |
691 | symbol is defined. To find a thread-local variable (e.g., a | |
692 | variable declared with the `__thread' storage class), we may | |
693 | need to know which object file it's in. */ | |
694 | struct objfile *objfile; | |
17c5ed2c DC |
695 | } |
696 | aux_value; | |
c906108c SS |
697 | |
698 | ||
17c5ed2c DC |
699 | /* Link to a list of aliases for this symbol. |
700 | Only a "primary/main symbol may have aliases. */ | |
701 | struct alias_list *aliases; | |
c906108c | 702 | |
17c5ed2c DC |
703 | /* List of ranges where this symbol is active. This is only |
704 | used by alias symbols at the current time. */ | |
705 | struct range_list *ranges; | |
261397f8 | 706 | |
17c5ed2c DC |
707 | struct symbol *hash_next; |
708 | }; | |
c906108c SS |
709 | |
710 | ||
711 | #define SYMBOL_NAMESPACE(symbol) (symbol)->namespace | |
712 | #define SYMBOL_CLASS(symbol) (symbol)->aclass | |
713 | #define SYMBOL_TYPE(symbol) (symbol)->type | |
714 | #define SYMBOL_LINE(symbol) (symbol)->line | |
715 | #define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg | |
9d774e44 | 716 | #define SYMBOL_OBJFILE(symbol) (symbol)->aux_value.objfile |
c906108c SS |
717 | #define SYMBOL_ALIASES(symbol) (symbol)->aliases |
718 | #define SYMBOL_RANGES(symbol) (symbol)->ranges | |
719 | \f | |
720 | /* A partial_symbol records the name, namespace, and address class of | |
721 | symbols whose types we have not parsed yet. For functions, it also | |
722 | contains their memory address, so we can find them from a PC value. | |
723 | Each partial_symbol sits in a partial_symtab, all of which are chained | |
a960f249 | 724 | on a partial symtab list and which points to the corresponding |
c906108c SS |
725 | normal symtab once the partial_symtab has been referenced. */ |
726 | ||
727 | struct partial_symbol | |
17c5ed2c | 728 | { |
c906108c | 729 | |
17c5ed2c | 730 | /* The general symbol info required for all types of symbols. */ |
c906108c | 731 | |
17c5ed2c | 732 | struct general_symbol_info ginfo; |
c906108c | 733 | |
17c5ed2c | 734 | /* Name space code. */ |
c906108c | 735 | |
17c5ed2c | 736 | namespace_enum namespace BYTE_BITFIELD; |
c906108c | 737 | |
17c5ed2c | 738 | /* Address class (for info_symbols) */ |
c906108c | 739 | |
17c5ed2c | 740 | enum address_class aclass BYTE_BITFIELD; |
c906108c | 741 | |
17c5ed2c | 742 | }; |
c906108c SS |
743 | |
744 | #define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace | |
745 | #define PSYMBOL_CLASS(psymbol) (psymbol)->aclass | |
c906108c | 746 | \f |
c5aa993b | 747 | |
c906108c SS |
748 | /* Each item represents a line-->pc (or the reverse) mapping. This is |
749 | somewhat more wasteful of space than one might wish, but since only | |
750 | the files which are actually debugged are read in to core, we don't | |
751 | waste much space. */ | |
752 | ||
753 | struct linetable_entry | |
17c5ed2c DC |
754 | { |
755 | int line; | |
756 | CORE_ADDR pc; | |
757 | }; | |
c906108c SS |
758 | |
759 | /* The order of entries in the linetable is significant. They should | |
760 | be sorted by increasing values of the pc field. If there is more than | |
761 | one entry for a given pc, then I'm not sure what should happen (and | |
762 | I not sure whether we currently handle it the best way). | |
763 | ||
764 | Example: a C for statement generally looks like this | |
765 | ||
c5aa993b JM |
766 | 10 0x100 - for the init/test part of a for stmt. |
767 | 20 0x200 | |
768 | 30 0x300 | |
769 | 10 0x400 - for the increment part of a for stmt. | |
c906108c | 770 | |
e8717518 FF |
771 | If an entry has a line number of zero, it marks the start of a PC |
772 | range for which no line number information is available. It is | |
773 | acceptable, though wasteful of table space, for such a range to be | |
774 | zero length. */ | |
c906108c SS |
775 | |
776 | struct linetable | |
17c5ed2c DC |
777 | { |
778 | int nitems; | |
c906108c | 779 | |
17c5ed2c DC |
780 | /* Actually NITEMS elements. If you don't like this use of the |
781 | `struct hack', you can shove it up your ANSI (seriously, if the | |
782 | committee tells us how to do it, we can probably go along). */ | |
783 | struct linetable_entry item[1]; | |
784 | }; | |
c906108c | 785 | |
c906108c SS |
786 | /* How to relocate the symbols from each section in a symbol file. |
787 | Each struct contains an array of offsets. | |
788 | The ordering and meaning of the offsets is file-type-dependent; | |
789 | typically it is indexed by section numbers or symbol types or | |
790 | something like that. | |
791 | ||
792 | To give us flexibility in changing the internal representation | |
793 | of these offsets, the ANOFFSET macro must be used to insert and | |
794 | extract offset values in the struct. */ | |
795 | ||
796 | struct section_offsets | |
17c5ed2c DC |
797 | { |
798 | CORE_ADDR offsets[1]; /* As many as needed. */ | |
799 | }; | |
c906108c | 800 | |
a4c8257b | 801 | #define ANOFFSET(secoff, whichone) \ |
8e65ff28 AC |
802 | ((whichone == -1) \ |
803 | ? (internal_error (__FILE__, __LINE__, "Section index is uninitialized"), -1) \ | |
804 | : secoff->offsets[whichone]) | |
c906108c SS |
805 | |
806 | /* The maximum possible size of a section_offsets table. */ | |
c5aa993b | 807 | |
c906108c SS |
808 | #define SIZEOF_SECTION_OFFSETS \ |
809 | (sizeof (struct section_offsets) \ | |
810 | + sizeof (((struct section_offsets *) 0)->offsets) * (SECT_OFF_MAX-1)) | |
811 | ||
a960f249 | 812 | /* Each source file or header is represented by a struct symtab. |
c906108c SS |
813 | These objects are chained through the `next' field. */ |
814 | ||
815 | struct symtab | |
17c5ed2c | 816 | { |
c906108c | 817 | |
17c5ed2c | 818 | /* Chain of all existing symtabs. */ |
c906108c | 819 | |
17c5ed2c | 820 | struct symtab *next; |
c906108c | 821 | |
17c5ed2c DC |
822 | /* List of all symbol scope blocks for this symtab. May be shared |
823 | between different symtabs (and normally is for all the symtabs | |
824 | in a given compilation unit). */ | |
c906108c | 825 | |
17c5ed2c | 826 | struct blockvector *blockvector; |
c906108c | 827 | |
17c5ed2c DC |
828 | /* Table mapping core addresses to line numbers for this file. |
829 | Can be NULL if none. Never shared between different symtabs. */ | |
c906108c | 830 | |
17c5ed2c | 831 | struct linetable *linetable; |
c906108c | 832 | |
17c5ed2c DC |
833 | /* Section in objfile->section_offsets for the blockvector and |
834 | the linetable. Probably always SECT_OFF_TEXT. */ | |
c906108c | 835 | |
17c5ed2c | 836 | int block_line_section; |
c906108c | 837 | |
17c5ed2c DC |
838 | /* If several symtabs share a blockvector, exactly one of them |
839 | should be designated the primary, so that the blockvector | |
840 | is relocated exactly once by objfile_relocate. */ | |
c906108c | 841 | |
17c5ed2c | 842 | int primary; |
c906108c | 843 | |
17c5ed2c DC |
844 | /* The macro table for this symtab. Like the blockvector, this |
845 | may be shared between different symtabs --- and normally is for | |
846 | all the symtabs in a given compilation unit. */ | |
847 | struct macro_table *macro_table; | |
99d9066e | 848 | |
17c5ed2c | 849 | /* Name of this source file. */ |
c906108c | 850 | |
17c5ed2c | 851 | char *filename; |
c906108c | 852 | |
17c5ed2c | 853 | /* Directory in which it was compiled, or NULL if we don't know. */ |
c906108c | 854 | |
17c5ed2c | 855 | char *dirname; |
c906108c | 856 | |
17c5ed2c DC |
857 | /* This component says how to free the data we point to: |
858 | free_contents => do a tree walk and free each object. | |
859 | free_nothing => do nothing; some other symtab will free | |
860 | the data this one uses. | |
861 | free_linetable => free just the linetable. FIXME: Is this redundant | |
862 | with the primary field? */ | |
c906108c | 863 | |
17c5ed2c DC |
864 | enum free_code |
865 | { | |
866 | free_nothing, free_contents, free_linetable | |
867 | } | |
868 | free_code; | |
c906108c | 869 | |
17c5ed2c DC |
870 | /* Pointer to one block of storage to be freed, if nonzero. */ |
871 | /* This is IN ADDITION to the action indicated by free_code. */ | |
c5aa993b | 872 | |
17c5ed2c | 873 | char *free_ptr; |
c906108c | 874 | |
17c5ed2c | 875 | /* Total number of lines found in source file. */ |
c906108c | 876 | |
17c5ed2c | 877 | int nlines; |
c906108c | 878 | |
17c5ed2c DC |
879 | /* line_charpos[N] is the position of the (N-1)th line of the |
880 | source file. "position" means something we can lseek() to; it | |
881 | is not guaranteed to be useful any other way. */ | |
c906108c | 882 | |
17c5ed2c | 883 | int *line_charpos; |
c906108c | 884 | |
17c5ed2c | 885 | /* Language of this source file. */ |
c906108c | 886 | |
17c5ed2c | 887 | enum language language; |
c906108c | 888 | |
17c5ed2c DC |
889 | /* String that identifies the format of the debugging information, such |
890 | as "stabs", "dwarf 1", "dwarf 2", "coff", etc. This is mostly useful | |
891 | for automated testing of gdb but may also be information that is | |
892 | useful to the user. */ | |
c906108c | 893 | |
17c5ed2c | 894 | char *debugformat; |
c906108c | 895 | |
17c5ed2c | 896 | /* String of version information. May be zero. */ |
c906108c | 897 | |
17c5ed2c | 898 | char *version; |
c906108c | 899 | |
17c5ed2c DC |
900 | /* Full name of file as found by searching the source path. |
901 | NULL if not yet known. */ | |
c906108c | 902 | |
17c5ed2c | 903 | char *fullname; |
c906108c | 904 | |
17c5ed2c | 905 | /* Object file from which this symbol information was read. */ |
c906108c | 906 | |
17c5ed2c | 907 | struct objfile *objfile; |
c906108c | 908 | |
17c5ed2c | 909 | }; |
c906108c SS |
910 | |
911 | #define BLOCKVECTOR(symtab) (symtab)->blockvector | |
912 | #define LINETABLE(symtab) (symtab)->linetable | |
c906108c | 913 | \f |
c5aa993b | 914 | |
c906108c SS |
915 | /* Each source file that has not been fully read in is represented by |
916 | a partial_symtab. This contains the information on where in the | |
917 | executable the debugging symbols for a specific file are, and a | |
918 | list of names of global symbols which are located in this file. | |
919 | They are all chained on partial symtab lists. | |
920 | ||
921 | Even after the source file has been read into a symtab, the | |
922 | partial_symtab remains around. They are allocated on an obstack, | |
923 | psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks- | |
924 | style execution of a bunch of .o's. */ | |
925 | ||
926 | struct partial_symtab | |
17c5ed2c | 927 | { |
c906108c | 928 | |
17c5ed2c | 929 | /* Chain of all existing partial symtabs. */ |
c906108c | 930 | |
17c5ed2c | 931 | struct partial_symtab *next; |
c906108c | 932 | |
17c5ed2c | 933 | /* Name of the source file which this partial_symtab defines */ |
c906108c | 934 | |
17c5ed2c | 935 | char *filename; |
c906108c | 936 | |
17c5ed2c | 937 | /* Full path of the source file. NULL if not known. */ |
58d370e0 | 938 | |
17c5ed2c | 939 | char *fullname; |
58d370e0 | 940 | |
17c5ed2c | 941 | /* Information about the object file from which symbols should be read. */ |
c906108c | 942 | |
17c5ed2c | 943 | struct objfile *objfile; |
c906108c | 944 | |
17c5ed2c | 945 | /* Set of relocation offsets to apply to each section. */ |
c906108c | 946 | |
17c5ed2c | 947 | struct section_offsets *section_offsets; |
c906108c | 948 | |
17c5ed2c DC |
949 | /* Range of text addresses covered by this file; texthigh is the |
950 | beginning of the next section. */ | |
c906108c | 951 | |
17c5ed2c DC |
952 | CORE_ADDR textlow; |
953 | CORE_ADDR texthigh; | |
c906108c | 954 | |
17c5ed2c DC |
955 | /* Array of pointers to all of the partial_symtab's which this one |
956 | depends on. Since this array can only be set to previous or | |
957 | the current (?) psymtab, this dependency tree is guaranteed not | |
958 | to have any loops. "depends on" means that symbols must be read | |
959 | for the dependencies before being read for this psymtab; this is | |
960 | for type references in stabs, where if foo.c includes foo.h, declarations | |
961 | in foo.h may use type numbers defined in foo.c. For other debugging | |
962 | formats there may be no need to use dependencies. */ | |
c906108c | 963 | |
17c5ed2c | 964 | struct partial_symtab **dependencies; |
c906108c | 965 | |
17c5ed2c | 966 | int number_of_dependencies; |
c906108c | 967 | |
17c5ed2c DC |
968 | /* Global symbol list. This list will be sorted after readin to |
969 | improve access. Binary search will be the usual method of | |
970 | finding a symbol within it. globals_offset is an integer offset | |
971 | within global_psymbols[]. */ | |
c906108c | 972 | |
17c5ed2c DC |
973 | int globals_offset; |
974 | int n_global_syms; | |
c906108c | 975 | |
17c5ed2c DC |
976 | /* Static symbol list. This list will *not* be sorted after readin; |
977 | to find a symbol in it, exhaustive search must be used. This is | |
978 | reasonable because searches through this list will eventually | |
979 | lead to either the read in of a files symbols for real (assumed | |
980 | to take a *lot* of time; check) or an error (and we don't care | |
981 | how long errors take). This is an offset and size within | |
982 | static_psymbols[]. */ | |
c906108c | 983 | |
17c5ed2c DC |
984 | int statics_offset; |
985 | int n_static_syms; | |
c906108c | 986 | |
17c5ed2c DC |
987 | /* Pointer to symtab eventually allocated for this source file, 0 if |
988 | !readin or if we haven't looked for the symtab after it was readin. */ | |
c906108c | 989 | |
17c5ed2c | 990 | struct symtab *symtab; |
c906108c | 991 | |
17c5ed2c DC |
992 | /* Pointer to function which will read in the symtab corresponding to |
993 | this psymtab. */ | |
c906108c | 994 | |
17c5ed2c | 995 | void (*read_symtab) (struct partial_symtab *); |
c906108c | 996 | |
17c5ed2c DC |
997 | /* Information that lets read_symtab() locate the part of the symbol table |
998 | that this psymtab corresponds to. This information is private to the | |
999 | format-dependent symbol reading routines. For further detail examine | |
1000 | the various symbol reading modules. Should really be (void *) but is | |
1001 | (char *) as with other such gdb variables. (FIXME) */ | |
c906108c | 1002 | |
17c5ed2c | 1003 | char *read_symtab_private; |
c906108c | 1004 | |
17c5ed2c | 1005 | /* Non-zero if the symtab corresponding to this psymtab has been readin */ |
c906108c | 1006 | |
17c5ed2c DC |
1007 | unsigned char readin; |
1008 | }; | |
c906108c SS |
1009 | |
1010 | /* A fast way to get from a psymtab to its symtab (after the first time). */ | |
1011 | #define PSYMTAB_TO_SYMTAB(pst) \ | |
1012 | ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst)) | |
c906108c | 1013 | \f |
c5aa993b | 1014 | |
c906108c | 1015 | /* The virtual function table is now an array of structures which have the |
a960f249 | 1016 | form { int16 offset, delta; void *pfn; }. |
c906108c SS |
1017 | |
1018 | In normal virtual function tables, OFFSET is unused. | |
1019 | DELTA is the amount which is added to the apparent object's base | |
1020 | address in order to point to the actual object to which the | |
1021 | virtual function should be applied. | |
1022 | PFN is a pointer to the virtual function. | |
1023 | ||
1024 | Note that this macro is g++ specific (FIXME). */ | |
c5aa993b | 1025 | |
c906108c SS |
1026 | #define VTBL_FNADDR_OFFSET 2 |
1027 | ||
c906108c SS |
1028 | /* External variables and functions for the objects described above. */ |
1029 | ||
c906108c SS |
1030 | /* See the comment in symfile.c about how current_objfile is used. */ |
1031 | ||
1032 | extern struct objfile *current_objfile; | |
1033 | ||
1034 | /* True if we are nested inside psymtab_to_symtab. */ | |
1035 | ||
1036 | extern int currently_reading_symtab; | |
1037 | ||
1038 | /* From utils.c. */ | |
1039 | extern int demangle; | |
1040 | extern int asm_demangle; | |
1041 | ||
1042 | /* symtab.c lookup functions */ | |
1043 | ||
1044 | /* lookup a symbol table by source file name */ | |
1045 | ||
1f8cc6db | 1046 | extern struct symtab *lookup_symtab (const char *); |
c906108c SS |
1047 | |
1048 | /* lookup a symbol by name (optional block, optional symtab) */ | |
1049 | ||
a14ed312 KB |
1050 | extern struct symbol *lookup_symbol (const char *, const struct block *, |
1051 | const namespace_enum, int *, | |
1052 | struct symtab **); | |
c906108c SS |
1053 | |
1054 | /* lookup a symbol by name, within a specified block */ | |
c5aa993b | 1055 | |
a14ed312 | 1056 | extern struct symbol *lookup_block_symbol (const struct block *, const char *, |
3121eff0 | 1057 | const char *, |
a14ed312 | 1058 | const namespace_enum); |
c906108c SS |
1059 | |
1060 | /* lookup a [struct, union, enum] by name, within a specified block */ | |
1061 | ||
a14ed312 | 1062 | extern struct type *lookup_struct (char *, struct block *); |
c906108c | 1063 | |
a14ed312 | 1064 | extern struct type *lookup_union (char *, struct block *); |
c906108c | 1065 | |
a14ed312 | 1066 | extern struct type *lookup_enum (char *, struct block *); |
c906108c SS |
1067 | |
1068 | /* lookup the function corresponding to the block */ | |
1069 | ||
a14ed312 | 1070 | extern struct symbol *block_function (struct block *); |
c906108c SS |
1071 | |
1072 | /* from blockframe.c: */ | |
1073 | ||
1074 | /* lookup the function symbol corresponding to the address */ | |
1075 | ||
a14ed312 | 1076 | extern struct symbol *find_pc_function (CORE_ADDR); |
c906108c SS |
1077 | |
1078 | /* lookup the function corresponding to the address and section */ | |
1079 | ||
a14ed312 | 1080 | extern struct symbol *find_pc_sect_function (CORE_ADDR, asection *); |
c5aa993b | 1081 | |
c906108c SS |
1082 | /* lookup function from address, return name, start addr and end addr */ |
1083 | ||
c5aa993b | 1084 | extern int |
a14ed312 | 1085 | find_pc_partial_function (CORE_ADDR, char **, CORE_ADDR *, CORE_ADDR *); |
c906108c | 1086 | |
a14ed312 | 1087 | extern void clear_pc_function_cache (void); |
c906108c | 1088 | |
5ae5f592 AC |
1089 | extern int find_pc_sect_partial_function (CORE_ADDR, asection *, |
1090 | char **, CORE_ADDR *, CORE_ADDR *); | |
c906108c SS |
1091 | |
1092 | /* from symtab.c: */ | |
1093 | ||
1094 | /* lookup partial symbol table by filename */ | |
1095 | ||
1f8cc6db | 1096 | extern struct partial_symtab *lookup_partial_symtab (const char *); |
c906108c SS |
1097 | |
1098 | /* lookup partial symbol table by address */ | |
1099 | ||
a14ed312 | 1100 | extern struct partial_symtab *find_pc_psymtab (CORE_ADDR); |
c906108c SS |
1101 | |
1102 | /* lookup partial symbol table by address and section */ | |
1103 | ||
a14ed312 | 1104 | extern struct partial_symtab *find_pc_sect_psymtab (CORE_ADDR, asection *); |
c906108c SS |
1105 | |
1106 | /* lookup full symbol table by address */ | |
1107 | ||
a14ed312 | 1108 | extern struct symtab *find_pc_symtab (CORE_ADDR); |
c906108c SS |
1109 | |
1110 | /* lookup full symbol table by address and section */ | |
1111 | ||
a14ed312 | 1112 | extern struct symtab *find_pc_sect_symtab (CORE_ADDR, asection *); |
c906108c SS |
1113 | |
1114 | /* lookup partial symbol by address */ | |
1115 | ||
a14ed312 KB |
1116 | extern struct partial_symbol *find_pc_psymbol (struct partial_symtab *, |
1117 | CORE_ADDR); | |
c906108c SS |
1118 | |
1119 | /* lookup partial symbol by address and section */ | |
1120 | ||
a14ed312 KB |
1121 | extern struct partial_symbol *find_pc_sect_psymbol (struct partial_symtab *, |
1122 | CORE_ADDR, asection *); | |
c906108c | 1123 | |
a14ed312 | 1124 | extern int find_pc_line_pc_range (CORE_ADDR, CORE_ADDR *, CORE_ADDR *); |
c906108c | 1125 | |
a14ed312 | 1126 | extern int contained_in (struct block *, struct block *); |
c906108c | 1127 | |
a14ed312 | 1128 | extern void reread_symbols (void); |
c906108c | 1129 | |
a14ed312 | 1130 | extern struct type *lookup_transparent_type (const char *); |
c906108c SS |
1131 | |
1132 | ||
1133 | /* Macro for name of symbol to indicate a file compiled with gcc. */ | |
1134 | #ifndef GCC_COMPILED_FLAG_SYMBOL | |
1135 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled." | |
1136 | #endif | |
1137 | ||
1138 | /* Macro for name of symbol to indicate a file compiled with gcc2. */ | |
1139 | #ifndef GCC2_COMPILED_FLAG_SYMBOL | |
1140 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled." | |
1141 | #endif | |
1142 | ||
1143 | /* Functions for dealing with the minimal symbol table, really a misc | |
1144 | address<->symbol mapping for things we don't have debug symbols for. */ | |
1145 | ||
a14ed312 KB |
1146 | extern void prim_record_minimal_symbol (const char *, CORE_ADDR, |
1147 | enum minimal_symbol_type, | |
1148 | struct objfile *); | |
c906108c SS |
1149 | |
1150 | extern struct minimal_symbol *prim_record_minimal_symbol_and_info | |
a14ed312 KB |
1151 | (const char *, CORE_ADDR, |
1152 | enum minimal_symbol_type, | |
1153 | char *info, int section, asection * bfd_section, struct objfile *); | |
c906108c | 1154 | |
a14ed312 | 1155 | extern unsigned int msymbol_hash_iw (const char *); |
9227b5eb | 1156 | |
a14ed312 | 1157 | extern unsigned int msymbol_hash (const char *); |
9227b5eb JB |
1158 | |
1159 | extern void | |
1160 | add_minsym_to_hash_table (struct minimal_symbol *sym, | |
1161 | struct minimal_symbol **table); | |
1162 | ||
a14ed312 KB |
1163 | extern struct minimal_symbol *lookup_minimal_symbol (const char *, |
1164 | const char *, | |
1165 | struct objfile *); | |
c906108c | 1166 | |
a14ed312 KB |
1167 | extern struct minimal_symbol *lookup_minimal_symbol_text (const char *, |
1168 | const char *, | |
1169 | struct objfile *); | |
c906108c | 1170 | |
a14ed312 KB |
1171 | struct minimal_symbol *lookup_minimal_symbol_solib_trampoline (const char *, |
1172 | const char *, | |
1173 | struct objfile | |
1174 | *); | |
c906108c | 1175 | |
a14ed312 | 1176 | extern struct minimal_symbol *lookup_minimal_symbol_by_pc (CORE_ADDR); |
c906108c | 1177 | |
a14ed312 KB |
1178 | extern struct minimal_symbol *lookup_minimal_symbol_by_pc_section (CORE_ADDR, |
1179 | asection | |
1180 | *); | |
c906108c | 1181 | |
a14ed312 KB |
1182 | extern struct minimal_symbol |
1183 | *lookup_solib_trampoline_symbol_by_pc (CORE_ADDR); | |
c906108c | 1184 | |
a14ed312 | 1185 | extern CORE_ADDR find_solib_trampoline_target (CORE_ADDR); |
c906108c | 1186 | |
a14ed312 | 1187 | extern void init_minimal_symbol_collection (void); |
c906108c | 1188 | |
56e290f4 | 1189 | extern struct cleanup *make_cleanup_discard_minimal_symbols (void); |
c906108c | 1190 | |
a14ed312 | 1191 | extern void install_minimal_symbols (struct objfile *); |
c906108c SS |
1192 | |
1193 | /* Sort all the minimal symbols in OBJFILE. */ | |
1194 | ||
a14ed312 | 1195 | extern void msymbols_sort (struct objfile *objfile); |
c906108c SS |
1196 | |
1197 | struct symtab_and_line | |
17c5ed2c DC |
1198 | { |
1199 | struct symtab *symtab; | |
1200 | asection *section; | |
1201 | /* Line number. Line numbers start at 1 and proceed through symtab->nlines. | |
1202 | 0 is never a valid line number; it is used to indicate that line number | |
1203 | information is not available. */ | |
1204 | int line; | |
1205 | ||
1206 | CORE_ADDR pc; | |
1207 | CORE_ADDR end; | |
1208 | }; | |
c906108c | 1209 | |
fe39c653 | 1210 | extern void init_sal (struct symtab_and_line *sal); |
c906108c SS |
1211 | |
1212 | struct symtabs_and_lines | |
17c5ed2c DC |
1213 | { |
1214 | struct symtab_and_line *sals; | |
1215 | int nelts; | |
1216 | }; | |
c5aa993b | 1217 | \f |
c906108c SS |
1218 | |
1219 | ||
c906108c SS |
1220 | /* Some types and macros needed for exception catchpoints. |
1221 | Can't put these in target.h because symtab_and_line isn't | |
1222 | known there. This file will be included by breakpoint.c, | |
1223 | hppa-tdep.c, etc. */ | |
1224 | ||
1225 | /* Enums for exception-handling support */ | |
c5aa993b | 1226 | enum exception_event_kind |
17c5ed2c DC |
1227 | { |
1228 | EX_EVENT_THROW, | |
1229 | EX_EVENT_CATCH | |
1230 | }; | |
c906108c SS |
1231 | |
1232 | /* Type for returning info about an exception */ | |
c5aa993b | 1233 | struct exception_event_record |
17c5ed2c DC |
1234 | { |
1235 | enum exception_event_kind kind; | |
1236 | struct symtab_and_line throw_sal; | |
1237 | struct symtab_and_line catch_sal; | |
1238 | /* This may need to be extended in the future, if | |
1239 | some platforms allow reporting more information, | |
1240 | such as point of rethrow, type of exception object, | |
1241 | type expected by catch clause, etc. */ | |
1242 | }; | |
c906108c SS |
1243 | |
1244 | #define CURRENT_EXCEPTION_KIND (current_exception_event->kind) | |
1245 | #define CURRENT_EXCEPTION_CATCH_SAL (current_exception_event->catch_sal) | |
1246 | #define CURRENT_EXCEPTION_CATCH_LINE (current_exception_event->catch_sal.line) | |
1247 | #define CURRENT_EXCEPTION_CATCH_FILE (current_exception_event->catch_sal.symtab->filename) | |
1248 | #define CURRENT_EXCEPTION_CATCH_PC (current_exception_event->catch_sal.pc) | |
1249 | #define CURRENT_EXCEPTION_THROW_SAL (current_exception_event->throw_sal) | |
1250 | #define CURRENT_EXCEPTION_THROW_LINE (current_exception_event->throw_sal.line) | |
1251 | #define CURRENT_EXCEPTION_THROW_FILE (current_exception_event->throw_sal.symtab->filename) | |
1252 | #define CURRENT_EXCEPTION_THROW_PC (current_exception_event->throw_sal.pc) | |
1253 | \f | |
1254 | ||
1255 | /* Given a pc value, return line number it is in. Second arg nonzero means | |
1256 | if pc is on the boundary use the previous statement's line number. */ | |
1257 | ||
a14ed312 | 1258 | extern struct symtab_and_line find_pc_line (CORE_ADDR, int); |
c906108c SS |
1259 | |
1260 | /* Same function, but specify a section as well as an address */ | |
1261 | ||
a14ed312 | 1262 | extern struct symtab_and_line find_pc_sect_line (CORE_ADDR, asection *, int); |
c906108c | 1263 | |
c906108c SS |
1264 | /* Given a symtab and line number, return the pc there. */ |
1265 | ||
a14ed312 | 1266 | extern int find_line_pc (struct symtab *, int, CORE_ADDR *); |
c906108c | 1267 | |
c5aa993b | 1268 | extern int |
a14ed312 | 1269 | find_line_pc_range (struct symtab_and_line, CORE_ADDR *, CORE_ADDR *); |
c906108c | 1270 | |
a14ed312 | 1271 | extern void resolve_sal_pc (struct symtab_and_line *); |
c906108c SS |
1272 | |
1273 | /* Given a string, return the line specified by it. For commands like "list" | |
1274 | and "breakpoint". */ | |
1275 | ||
a14ed312 | 1276 | extern struct symtabs_and_lines decode_line_spec (char *, int); |
c906108c | 1277 | |
a14ed312 | 1278 | extern struct symtabs_and_lines decode_line_spec_1 (char *, int); |
c906108c | 1279 | |
c906108c SS |
1280 | /* Symmisc.c */ |
1281 | ||
a14ed312 | 1282 | void maintenance_print_symbols (char *, int); |
c906108c | 1283 | |
a14ed312 | 1284 | void maintenance_print_psymbols (char *, int); |
c906108c | 1285 | |
a14ed312 | 1286 | void maintenance_print_msymbols (char *, int); |
c906108c | 1287 | |
a14ed312 | 1288 | void maintenance_print_objfiles (char *, int); |
c906108c | 1289 | |
a14ed312 | 1290 | void maintenance_check_symtabs (char *, int); |
c906108c SS |
1291 | |
1292 | /* maint.c */ | |
1293 | ||
a14ed312 | 1294 | void maintenance_print_statistics (char *, int); |
c906108c | 1295 | |
a14ed312 | 1296 | extern void free_symtab (struct symtab *); |
c906108c SS |
1297 | |
1298 | /* Symbol-reading stuff in symfile.c and solib.c. */ | |
1299 | ||
a14ed312 | 1300 | extern struct symtab *psymtab_to_symtab (struct partial_symtab *); |
c906108c | 1301 | |
a14ed312 | 1302 | extern void clear_solib (void); |
c906108c | 1303 | |
c906108c SS |
1304 | /* source.c */ |
1305 | ||
a14ed312 | 1306 | extern int identify_source_line (struct symtab *, int, int, CORE_ADDR); |
c906108c | 1307 | |
a14ed312 | 1308 | extern void print_source_lines (struct symtab *, int, int, int); |
c906108c | 1309 | |
a14ed312 | 1310 | extern void forget_cached_source_info (void); |
c906108c | 1311 | |
a14ed312 | 1312 | extern void select_source_symtab (struct symtab *); |
c906108c | 1313 | |
a14ed312 | 1314 | extern char **make_symbol_completion_list (char *, char *); |
c906108c | 1315 | |
c94fdfd0 EZ |
1316 | extern char **make_file_symbol_completion_list (char *, char *, char *); |
1317 | ||
a14ed312 | 1318 | extern struct symbol **make_symbol_overload_list (struct symbol *); |
c906108c | 1319 | |
c94fdfd0 EZ |
1320 | extern char **make_source_files_completion_list (char *, char *); |
1321 | ||
c906108c SS |
1322 | /* symtab.c */ |
1323 | ||
a14ed312 | 1324 | extern struct partial_symtab *find_main_psymtab (void); |
c906108c | 1325 | |
50641945 FN |
1326 | extern struct symtab *find_line_symtab (struct symtab *, int, int *, int *); |
1327 | ||
17c5ed2c DC |
1328 | extern struct symtab_and_line find_function_start_sal (struct symbol *sym, |
1329 | int); | |
50641945 | 1330 | |
c906108c SS |
1331 | /* blockframe.c */ |
1332 | ||
a14ed312 | 1333 | extern struct blockvector *blockvector_for_pc (CORE_ADDR, int *); |
c906108c | 1334 | |
a14ed312 KB |
1335 | extern struct blockvector *blockvector_for_pc_sect (CORE_ADDR, asection *, |
1336 | int *, struct symtab *); | |
c906108c SS |
1337 | |
1338 | /* symfile.c */ | |
1339 | ||
a14ed312 | 1340 | extern void clear_symtab_users (void); |
c906108c | 1341 | |
a14ed312 | 1342 | extern enum language deduce_language_from_filename (char *); |
c906108c SS |
1343 | |
1344 | /* symtab.c */ | |
1345 | ||
a14ed312 | 1346 | extern int in_prologue (CORE_ADDR pc, CORE_ADDR func_start); |
c906108c | 1347 | |
a14ed312 KB |
1348 | extern struct symbol *fixup_symbol_section (struct symbol *, |
1349 | struct objfile *); | |
c906108c | 1350 | |
7a78d0ee KB |
1351 | extern struct partial_symbol *fixup_psymbol_section (struct partial_symbol |
1352 | *psym, | |
1353 | struct objfile *objfile); | |
1354 | ||
c906108c SS |
1355 | /* Symbol searching */ |
1356 | ||
1357 | /* When using search_symbols, a list of the following structs is returned. | |
7e73cedf | 1358 | Callers must free the search list using free_search_symbols! */ |
c906108c | 1359 | struct symbol_search |
17c5ed2c DC |
1360 | { |
1361 | /* The block in which the match was found. Could be, for example, | |
1362 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
1363 | int block; | |
c906108c | 1364 | |
17c5ed2c | 1365 | /* Information describing what was found. |
c906108c | 1366 | |
17c5ed2c DC |
1367 | If symtab abd symbol are NOT NULL, then information was found |
1368 | for this match. */ | |
1369 | struct symtab *symtab; | |
1370 | struct symbol *symbol; | |
c906108c | 1371 | |
17c5ed2c DC |
1372 | /* If msymbol is non-null, then a match was made on something for |
1373 | which only minimal_symbols exist. */ | |
1374 | struct minimal_symbol *msymbol; | |
c906108c | 1375 | |
17c5ed2c DC |
1376 | /* A link to the next match, or NULL for the end. */ |
1377 | struct symbol_search *next; | |
1378 | }; | |
c906108c | 1379 | |
a14ed312 KB |
1380 | extern void search_symbols (char *, namespace_enum, int, char **, |
1381 | struct symbol_search **); | |
1382 | extern void free_search_symbols (struct symbol_search *); | |
17c5ed2c DC |
1383 | extern struct cleanup *make_cleanup_free_search_symbols (struct symbol_search |
1384 | *); | |
c906108c | 1385 | |
51cc5b07 AC |
1386 | /* The name of the ``main'' function. |
1387 | FIXME: cagney/2001-03-20: Can't make main_name() const since some | |
1388 | of the calling code currently assumes that the string isn't | |
1389 | const. */ | |
1390 | extern void set_main_name (const char *name); | |
17c5ed2c | 1391 | extern /*const */ char *main_name (void); |
51cc5b07 | 1392 | |
c906108c | 1393 | #endif /* !defined(SYMTAB_H) */ |