| 1 | /* Symbol table definitions for GDB. |
| 2 | Copyright (C) 1986, 1989, 1991, 1992 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 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 |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | #if !defined (SYMTAB_H) |
| 21 | #define SYMTAB_H 1 |
| 22 | #include "obstack.h" |
| 23 | |
| 24 | /* See the comment in symfile.c about how current_objfile is used. */ |
| 25 | |
| 26 | extern struct objfile *current_objfile; |
| 27 | |
| 28 | /* Some definitions and declarations to go with use of obstacks. */ |
| 29 | #define obstack_chunk_alloc xmalloc |
| 30 | #define obstack_chunk_free free |
| 31 | |
| 32 | /* Some macros for char-based bitfields. */ |
| 33 | #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7))) |
| 34 | #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7))) |
| 35 | #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7))) |
| 36 | #define B_TYPE unsigned char |
| 37 | #define B_BYTES(x) ( 1 + ((x)>>3) ) |
| 38 | #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x)) |
| 39 | |
| 40 | |
| 41 | /* Define a simple structure used to hold some very basic information about |
| 42 | all defined global symbols (text, data, bss, abs, etc). The only two |
| 43 | required pieces of information are the symbol's name and the address |
| 44 | associated with that symbol. In many cases, even if a file was compiled |
| 45 | with no special options for debugging at all, as long as was not stripped |
| 46 | it will contain sufficient information to build a useful minimal symbol |
| 47 | table using this structure. Even when a file contains enough debugging |
| 48 | information to build a full symbol table, these minimal symbols are still |
| 49 | useful for quickly mapping between names and addresses, and vice versa. |
| 50 | They are also sometimes used to figure out what full symbol table entries |
| 51 | need to be read in. */ |
| 52 | |
| 53 | struct minimal_symbol |
| 54 | { |
| 55 | |
| 56 | /* Name of the symbol. This is a required field. Storage for the name is |
| 57 | allocated on the symbol_obstack for the associated objfile. */ |
| 58 | |
| 59 | char *name; |
| 60 | |
| 61 | /* Address of the symbol. This is a required field. */ |
| 62 | |
| 63 | CORE_ADDR address; |
| 64 | |
| 65 | /* The info field is available for caching machine-specific information that |
| 66 | The AMD 29000 tdep.c uses it to remember things it has decoded from the |
| 67 | instructions in the function header, so it doesn't have to rederive the |
| 68 | info constantly (over a serial line). It is initialized to zero and |
| 69 | stays that way until target-dependent code sets it. Storage for any data |
| 70 | pointed to by this field should be allocated on the symbol_obstack for |
| 71 | the associated objfile. The type would be "void *" except for reasons |
| 72 | of compatibility with older compilers. This field is optional. */ |
| 73 | |
| 74 | char *info; |
| 75 | |
| 76 | /* Classification types for this symbol. These should be taken as "advisory |
| 77 | only", since if gdb can't easily figure out a classification it simply |
| 78 | selects mst_unknown. It may also have to guess when it can't figure out |
| 79 | which is a better match between two types (mst_data versus mst_bss) for |
| 80 | example. Since the minimal symbol info is sometimes derived from the |
| 81 | BFD library's view of a file, we need to live with what information bfd |
| 82 | supplies. */ |
| 83 | |
| 84 | enum minimal_symbol_type |
| 85 | { |
| 86 | mst_unknown = 0, /* Unknown type, the default */ |
| 87 | mst_text, /* Generally executable instructions */ |
| 88 | mst_data, /* Generally initialized data */ |
| 89 | mst_bss, /* Generally uninitialized data */ |
| 90 | mst_abs /* Generally absolute (nonrelocatable) */ |
| 91 | } type; |
| 92 | |
| 93 | }; |
| 94 | |
| 95 | \f |
| 96 | /* All of the name-scope contours of the program |
| 97 | are represented by `struct block' objects. |
| 98 | All of these objects are pointed to by the blockvector. |
| 99 | |
| 100 | Each block represents one name scope. |
| 101 | Each lexical context has its own block. |
| 102 | |
| 103 | The first two blocks in the blockvector are special. |
| 104 | The first one contains all the symbols defined in this compilation |
| 105 | whose scope is the entire program linked together. |
| 106 | The second one contains all the symbols whose scope is the |
| 107 | entire compilation excluding other separate compilations. |
| 108 | In C, these correspond to global symbols and static symbols. |
| 109 | |
| 110 | Each block records a range of core addresses for the code that |
| 111 | is in the scope of the block. The first two special blocks |
| 112 | give, for the range of code, the entire range of code produced |
| 113 | by the compilation that the symbol segment belongs to. |
| 114 | |
| 115 | The blocks appear in the blockvector |
| 116 | in order of increasing starting-address, |
| 117 | and, within that, in order of decreasing ending-address. |
| 118 | |
| 119 | This implies that within the body of one function |
| 120 | the blocks appear in the order of a depth-first tree walk. */ |
| 121 | |
| 122 | struct blockvector |
| 123 | { |
| 124 | /* Number of blocks in the list. */ |
| 125 | int nblocks; |
| 126 | /* The blocks themselves. */ |
| 127 | struct block *block[1]; |
| 128 | }; |
| 129 | |
| 130 | /* Special block numbers */ |
| 131 | #define GLOBAL_BLOCK 0 |
| 132 | #define STATIC_BLOCK 1 |
| 133 | #define FIRST_LOCAL_BLOCK 2 |
| 134 | |
| 135 | struct block |
| 136 | { |
| 137 | /* Addresses in the executable code that are in this block. |
| 138 | Note: in an unrelocated symbol segment in a file, |
| 139 | these are always zero. They can be filled in from the |
| 140 | N_LBRAC and N_RBRAC symbols in the loader symbol table. */ |
| 141 | CORE_ADDR startaddr, endaddr; |
| 142 | /* The symbol that names this block, |
| 143 | if the block is the body of a function; |
| 144 | otherwise, zero. |
| 145 | Note: In an unrelocated symbol segment in an object file, |
| 146 | this field may be zero even when the block has a name. |
| 147 | That is because the block is output before the name |
| 148 | (since the name resides in a higher block). |
| 149 | Since the symbol does point to the block (as its value), |
| 150 | it is possible to find the block and set its name properly. */ |
| 151 | struct symbol *function; |
| 152 | /* The `struct block' for the containing block, or 0 if none. */ |
| 153 | /* Note that in an unrelocated symbol segment in an object file |
| 154 | this pointer may be zero when the correct value should be |
| 155 | the second special block (for symbols whose scope is one compilation). |
| 156 | This is because the compiler outputs the special blocks at the |
| 157 | very end, after the other blocks. */ |
| 158 | struct block *superblock; |
| 159 | /* A flag indicating whether or not the function corresponding |
| 160 | to this block was compiled with gcc or not. If there is no |
| 161 | function corresponding to this block, this meaning of this flag |
| 162 | is undefined. (In practice it will be 1 if the block was created |
| 163 | while processing a file compiled with gcc and 0 when not). */ |
| 164 | unsigned char gcc_compile_flag; |
| 165 | /* Number of local symbols. */ |
| 166 | int nsyms; |
| 167 | /* The symbols. */ |
| 168 | struct symbol *sym[1]; |
| 169 | }; |
| 170 | \f |
| 171 | /* Represent one symbol name; a variable, constant, function or typedef. */ |
| 172 | |
| 173 | /* Different name spaces for symbols. Looking up a symbol specifies |
| 174 | a namespace and ignores symbol definitions in other name spaces. |
| 175 | |
| 176 | VAR_NAMESPACE is the usual namespace. |
| 177 | In C, this contains variables, function names, typedef names |
| 178 | and enum type values. |
| 179 | |
| 180 | STRUCT_NAMESPACE is used in C to hold struct, union and enum type names. |
| 181 | Thus, if `struct foo' is used in a C program, |
| 182 | it produces a symbol named `foo' in the STRUCT_NAMESPACE. |
| 183 | |
| 184 | LABEL_NAMESPACE may be used for names of labels (for gotos); |
| 185 | currently it is not used and labels are not recorded at all. */ |
| 186 | |
| 187 | /* For a non-global symbol allocated statically, |
| 188 | the correct core address cannot be determined by the compiler. |
| 189 | The compiler puts an index number into the symbol's value field. |
| 190 | This index number can be matched with the "desc" field of |
| 191 | an entry in the loader symbol table. */ |
| 192 | |
| 193 | enum namespace |
| 194 | { |
| 195 | UNDEF_NAMESPACE, VAR_NAMESPACE, STRUCT_NAMESPACE, LABEL_NAMESPACE |
| 196 | }; |
| 197 | |
| 198 | /* An address-class says where to find the value of a symbol. */ |
| 199 | |
| 200 | enum address_class |
| 201 | { |
| 202 | LOC_UNDEF, /* Not used; catches errors */ |
| 203 | LOC_CONST, /* Value is constant int SYMBOL_VALUE, host byteorder */ |
| 204 | LOC_STATIC, /* Value is at fixed address SYMBOL_VALUE_ADDRESS */ |
| 205 | LOC_REGISTER, /* Value is in register */ |
| 206 | LOC_ARG, /* Value is at spec'd offset in arglist */ |
| 207 | LOC_REF_ARG, /* Value address is at spec'd offset in arglist. */ |
| 208 | LOC_REGPARM, /* Value is at spec'd offset in register window */ |
| 209 | LOC_LOCAL, /* Value is at spec'd offset in stack frame */ |
| 210 | LOC_TYPEDEF, /* Value not used; definition in SYMBOL_TYPE |
| 211 | Symbols in the namespace STRUCT_NAMESPACE |
| 212 | all have this class. */ |
| 213 | LOC_LABEL, /* Value is address SYMBOL_VALUE_ADDRESS in the code */ |
| 214 | LOC_BLOCK, /* Value is address SYMBOL_VALUE_BLOCK of a |
| 215 | `struct block'. Function names have this class. */ |
| 216 | LOC_CONST_BYTES, /* Value is a constant byte-sequence pointed to by |
| 217 | SYMBOL_VALUE_ADDRESS, in target byte order. */ |
| 218 | LOC_LOCAL_ARG /* Value is arg at spec'd offset in stack frame. |
| 219 | Differs from LOC_LOCAL in that symbol is an |
| 220 | argument; differs from LOC_ARG in that we find it |
| 221 | in the frame (FRAME_LOCALS_ADDRESS), not in the |
| 222 | arglist (FRAME_ARGS_ADDRESS). Added for i960, |
| 223 | which passes args in regs then copies to frame. */ |
| 224 | }; |
| 225 | |
| 226 | struct symbol |
| 227 | { |
| 228 | /* Symbol name */ |
| 229 | char *name; |
| 230 | /* Name space code. */ |
| 231 | enum namespace namespace; |
| 232 | /* Address class */ |
| 233 | enum address_class class; |
| 234 | /* Data type of value */ |
| 235 | struct type *type; |
| 236 | |
| 237 | /* Line number of definition. */ |
| 238 | unsigned short line; |
| 239 | |
| 240 | /* constant value, or address if static, or register number, |
| 241 | or offset in arguments, or offset in stack frame. All of |
| 242 | these are in host byte order (though what they point to might |
| 243 | be in target byte order, e.g. LOC_CONST_BYTES). */ |
| 244 | union |
| 245 | { |
| 246 | long value; /* for LOC_CONST, LOC_REGISTER, LOC_ARG, |
| 247 | LOC_REF_ARG, LOC_REGPARM, LOC_LOCAL */ |
| 248 | struct block *block; /* for LOC_BLOCK */ |
| 249 | char *bytes; /* for LOC_CONST_BYTES */ |
| 250 | CORE_ADDR address; /* for LOC_STATIC, LOC_LABEL */ |
| 251 | struct symbol *chain; /* for opaque typedef struct chain */ |
| 252 | } |
| 253 | value; |
| 254 | |
| 255 | /* Some symbols require an additional value to be recorded on a per- |
| 256 | symbol basis. Stash those values here. */ |
| 257 | union |
| 258 | { |
| 259 | struct /* for OP_BASEREG in DWARF location specs */ |
| 260 | { |
| 261 | short regno_valid; /* 0 == regno invalid; !0 == regno valid */ |
| 262 | short regno; /* base register number {0, 1, 2, ...} */ |
| 263 | } basereg; |
| 264 | } |
| 265 | aux_value; |
| 266 | }; |
| 267 | |
| 268 | |
| 269 | /* A partial_symbol records the name, namespace, and address class of |
| 270 | symbols whose types we have not parsed yet. For functions, it also |
| 271 | contains their memory address, so we can find them from a PC value. |
| 272 | Each partial_symbol sits in a partial_symtab, all of which are chained |
| 273 | on a partial symtab list and which points to the corresponding |
| 274 | normal symtab once the partial_symtab has been referenced. */ |
| 275 | |
| 276 | struct partial_symbol |
| 277 | { |
| 278 | /* Symbol name */ |
| 279 | char *name; |
| 280 | /* Name space code. */ |
| 281 | enum namespace namespace; |
| 282 | /* Address class (for info_symbols) */ |
| 283 | enum address_class class; |
| 284 | /* Value (only used for static functions currently). Done this |
| 285 | way so that we can use the struct symbol macros. |
| 286 | Note that the address of a function is SYMBOL_VALUE_ADDRESS (pst) |
| 287 | in a partial symbol table, but BLOCK_START (SYMBOL_BLOCK_VALUE (st)) |
| 288 | in a symbol table. */ |
| 289 | union |
| 290 | { |
| 291 | long value; |
| 292 | CORE_ADDR address; |
| 293 | } |
| 294 | value; |
| 295 | }; |
| 296 | \f |
| 297 | /* Source-file information. |
| 298 | This describes the relation between source files and line numbers |
| 299 | and addresses in the program text. */ |
| 300 | |
| 301 | struct sourcevector |
| 302 | { |
| 303 | int length; /* Number of source files described */ |
| 304 | struct source *source[1]; /* Descriptions of the files */ |
| 305 | }; |
| 306 | |
| 307 | /* Each item represents a line-->pc (or the reverse) mapping. This is |
| 308 | somewhat more wasteful of space than one might wish, but since only |
| 309 | the files which are actually debugged are read in to core, we don't |
| 310 | waste much space. |
| 311 | |
| 312 | Each item used to be an int; either minus a line number, or a |
| 313 | program counter. If it represents a line number, that is the line |
| 314 | described by the next program counter value. If it is positive, it |
| 315 | is the program counter at which the code for the next line starts. */ |
| 316 | |
| 317 | struct linetable_entry |
| 318 | { |
| 319 | int line; |
| 320 | CORE_ADDR pc; |
| 321 | }; |
| 322 | |
| 323 | struct linetable |
| 324 | { |
| 325 | int nitems; |
| 326 | struct linetable_entry item[1]; |
| 327 | }; |
| 328 | |
| 329 | /* All the information on one source file. */ |
| 330 | |
| 331 | struct source |
| 332 | { |
| 333 | char *name; /* Name of file */ |
| 334 | struct linetable contents; |
| 335 | }; |
| 336 | |
| 337 | /* How to relocate the symbols from each section in a symbol file. |
| 338 | Each struct contains an array of offsets. |
| 339 | The ordering and meaning of the offsets is file-type-dependent; |
| 340 | typically it is indexed by section numbers or symbol types or |
| 341 | something like that. |
| 342 | |
| 343 | To give us flexibility in changing the internal representation |
| 344 | of these offsets, the ANOFFSET macro must be used to insert and |
| 345 | extract offset values in the struct. */ |
| 346 | |
| 347 | struct section_offsets |
| 348 | { |
| 349 | CORE_ADDR offsets[1]; /* As many as needed. */ |
| 350 | }; |
| 351 | |
| 352 | #define ANOFFSET(secoff, whichone) (secoff->offsets[whichone]) |
| 353 | |
| 354 | /* Each source file is represented by a struct symtab. |
| 355 | These objects are chained through the `next' field. */ |
| 356 | |
| 357 | struct symtab |
| 358 | { |
| 359 | /* Chain of all existing symtabs. */ |
| 360 | struct symtab *next; |
| 361 | /* List of all symbol scope blocks for this symtab. */ |
| 362 | struct blockvector *blockvector; |
| 363 | /* Table mapping core addresses to line numbers for this file. |
| 364 | Can be NULL if none. */ |
| 365 | struct linetable *linetable; |
| 366 | /* Name of this source file. */ |
| 367 | char *filename; |
| 368 | /* Directory in which it was compiled, or NULL if we don't know. */ |
| 369 | char *dirname; |
| 370 | /* This component says how to free the data we point to: |
| 371 | free_contents => do a tree walk and free each object. |
| 372 | free_nothing => do nothing; some other symtab will free |
| 373 | the data this one uses. |
| 374 | free_linetable => free just the linetable. */ |
| 375 | enum free_code {free_nothing, free_contents, free_linetable} |
| 376 | free_code; |
| 377 | /* Pointer to one block of storage to be freed, if nonzero. */ |
| 378 | /* This is IN ADDITION to the action indicated by free_code. */ |
| 379 | char *free_ptr; |
| 380 | /* Total number of lines found in source file. */ |
| 381 | int nlines; |
| 382 | /* Array mapping line number to character position. */ |
| 383 | int *line_charpos; |
| 384 | /* Language of this source file. */ |
| 385 | enum language language; |
| 386 | /* String of version information. May be zero. */ |
| 387 | char *version; |
| 388 | /* Full name of file as found by searching the source path. |
| 389 | 0 if not yet known. */ |
| 390 | char *fullname; |
| 391 | |
| 392 | /* Object file from which this symbol information was read. */ |
| 393 | struct objfile *objfile; |
| 394 | |
| 395 | /* Anything extra for this symtab. This is for target machines |
| 396 | with special debugging info of some sort (which cannot just |
| 397 | be represented in a normal symtab). */ |
| 398 | #if defined (EXTRA_SYMTAB_INFO) |
| 399 | EXTRA_SYMTAB_INFO |
| 400 | #endif |
| 401 | }; |
| 402 | |
| 403 | /* Each source file that has not been fully read in is represented by |
| 404 | a partial_symtab. This contains the information on where in the |
| 405 | executable the debugging symbols for a specific file are, and a |
| 406 | list of names of global symbols which are located in this file. |
| 407 | They are all chained on partial symtab lists. |
| 408 | |
| 409 | Even after the source file has been read into a symtab, the |
| 410 | partial_symtab remains around. They are allocated on an obstack, |
| 411 | psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks- |
| 412 | style execution of a bunch of .o's. */ |
| 413 | |
| 414 | struct partial_symtab |
| 415 | { |
| 416 | /* Chain of all existing partial symtabs. */ |
| 417 | struct partial_symtab *next; |
| 418 | /* Name of the source file which this partial_symtab defines */ |
| 419 | char *filename; |
| 420 | |
| 421 | /* Information about the object file from which symbols should be read. */ |
| 422 | struct objfile *objfile; |
| 423 | |
| 424 | /* Set of relocation offsets to apply to each section. */ |
| 425 | struct section_offsets *section_offsets; |
| 426 | |
| 427 | /* Range of text addresses covered by this file; texthigh is the |
| 428 | beginning of the next section. */ |
| 429 | CORE_ADDR textlow, texthigh; |
| 430 | /* Array of pointers to all of the partial_symtab's which this one |
| 431 | depends on. Since this array can only be set to previous or |
| 432 | the current (?) psymtab, this dependency tree is guaranteed not |
| 433 | to have any loops. */ |
| 434 | struct partial_symtab **dependencies; |
| 435 | int number_of_dependencies; |
| 436 | /* Global symbol list. This list will be sorted after readin to |
| 437 | improve access. Binary search will be the usual method of |
| 438 | finding a symbol within it. globals_offset is an integer offset |
| 439 | within global_psymbols[]. */ |
| 440 | int globals_offset, n_global_syms; |
| 441 | /* Static symbol list. This list will *not* be sorted after readin; |
| 442 | to find a symbol in it, exhaustive search must be used. This is |
| 443 | reasonable because searches through this list will eventually |
| 444 | lead to either the read in of a files symbols for real (assumed |
| 445 | to take a *lot* of time; check) or an error (and we don't care |
| 446 | how long errors take). This is an offset and size within |
| 447 | static_psymbols[]. */ |
| 448 | int statics_offset, n_static_syms; |
| 449 | /* Pointer to symtab eventually allocated for this source file, 0 if |
| 450 | !readin or if we haven't looked for the symtab after it was readin. */ |
| 451 | struct symtab *symtab; |
| 452 | /* Pointer to function which will read in the symtab corresponding to |
| 453 | this psymtab. */ |
| 454 | void (*read_symtab) PARAMS ((struct partial_symtab *)); |
| 455 | /* Information that lets read_symtab() locate the part of the symbol table |
| 456 | that this psymtab corresponds to. This information is private to the |
| 457 | format-dependent symbol reading routines. For further detail examine |
| 458 | the various symbol reading modules. Should really be (void *) but is |
| 459 | (char *) as with other such gdb variables. (FIXME) */ |
| 460 | char *read_symtab_private; |
| 461 | /* Non-zero if the symtab corresponding to this psymtab has been |
| 462 | readin */ |
| 463 | unsigned char readin; |
| 464 | }; |
| 465 | |
| 466 | /* A fast way to get from a psymtab to its symtab (after the first time). */ |
| 467 | #define PSYMTAB_TO_SYMTAB(pst) ((pst)->symtab? \ |
| 468 | (pst)->symtab: \ |
| 469 | psymtab_to_symtab (pst) ) |
| 470 | |
| 471 | /* This symtab variable specifies the current file for printing source lines */ |
| 472 | |
| 473 | extern struct symtab *current_source_symtab; |
| 474 | |
| 475 | /* This is the next line to print for listing source lines. */ |
| 476 | |
| 477 | extern int current_source_line; |
| 478 | |
| 479 | #define BLOCKVECTOR(symtab) (symtab)->blockvector |
| 480 | |
| 481 | #define LINETABLE(symtab) (symtab)->linetable |
| 482 | \f |
| 483 | /* Macros normally used to access components of symbol table structures. */ |
| 484 | |
| 485 | #define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks |
| 486 | #define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n] |
| 487 | |
| 488 | #define BLOCK_START(bl) (bl)->startaddr |
| 489 | #define BLOCK_END(bl) (bl)->endaddr |
| 490 | #define BLOCK_NSYMS(bl) (bl)->nsyms |
| 491 | #define BLOCK_SYM(bl, n) (bl)->sym[n] |
| 492 | #define BLOCK_FUNCTION(bl) (bl)->function |
| 493 | #define BLOCK_SUPERBLOCK(bl) (bl)->superblock |
| 494 | #define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag |
| 495 | |
| 496 | /* Nonzero if symbols of block BL should be sorted alphabetically. */ |
| 497 | #define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40) |
| 498 | |
| 499 | #define SYMBOL_NAME(symbol) (symbol)->name |
| 500 | #define SYMBOL_NAMESPACE(symbol) (symbol)->namespace |
| 501 | #define SYMBOL_CLASS(symbol) (symbol)->class |
| 502 | #define SYMBOL_VALUE(symbol) (symbol)->value.value |
| 503 | #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->value.address |
| 504 | #define SYMBOL_VALUE_BYTES(symbol) (symbol)->value.bytes |
| 505 | #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->value.block |
| 506 | #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->value.chain |
| 507 | #define SYMBOL_TYPE(symbol) (symbol)->type |
| 508 | #define SYMBOL_LINE(symbol) (symbol)->line |
| 509 | #if 0 |
| 510 | /* This currently fails because some symbols are not being initialized |
| 511 | to zero on allocation, and no code is currently setting this value. |
| 512 | Basereg handling will probably change significantly in the next release. |
| 513 | FIXME -fnf */ |
| 514 | #define SYMBOL_BASEREG_VALID(symbol) (symbol)->aux_value.basereg.regno_valid |
| 515 | #else |
| 516 | #define SYMBOL_BASEREG_VALID(symbol) 0 |
| 517 | #endif |
| 518 | #define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg.regno |
| 519 | |
| 520 | /* The virtual function table is now an array of structures |
| 521 | which have the form { int16 offset, delta; void *pfn; }. |
| 522 | |
| 523 | In normal virtual function tables, OFFSET is unused. |
| 524 | DELTA is the amount which is added to the apparent object's base |
| 525 | address in order to point to the actual object to which the |
| 526 | virtual function should be applied. |
| 527 | PFN is a pointer to the virtual function. */ |
| 528 | |
| 529 | #define VTBL_FNADDR_OFFSET 2 |
| 530 | |
| 531 | /* Macro that yields non-zero value iff NAME is the prefix |
| 532 | for C++ operator names. If you leave out the parenthesis |
| 533 | here you will lose! |
| 534 | |
| 535 | Currently 'o' 'p' CPLUS_MARKER is used for both the symbol in the |
| 536 | symbol-file and the names in gdb's symbol table. */ |
| 537 | #define OPNAME_PREFIX_P(NAME) ((NAME)[0] == 'o' && (NAME)[1] == 'p' \ |
| 538 | && (NAME)[2] == CPLUS_MARKER) |
| 539 | |
| 540 | #define VTBL_PREFIX_P(NAME) ((NAME)[3] == CPLUS_MARKER \ |
| 541 | && !strncmp ((NAME), "_vt", 3)) |
| 542 | \f |
| 543 | /* Functions that work on the objects described above */ |
| 544 | |
| 545 | extern struct symtab * |
| 546 | lookup_symtab PARAMS ((char *)); |
| 547 | |
| 548 | extern struct symbol * |
| 549 | lookup_symbol PARAMS ((const char *, const struct block *, |
| 550 | const enum namespace, int *, struct symtab **)); |
| 551 | |
| 552 | extern struct symbol * |
| 553 | lookup_block_symbol PARAMS ((const struct block *, const char *, |
| 554 | const enum namespace)); |
| 555 | |
| 556 | extern struct type * |
| 557 | lookup_struct PARAMS ((char *, struct block *)); |
| 558 | |
| 559 | extern struct type * |
| 560 | lookup_union PARAMS ((char *, struct block *)); |
| 561 | |
| 562 | extern struct type * |
| 563 | lookup_enum PARAMS ((char *, struct block *)); |
| 564 | |
| 565 | extern struct type * |
| 566 | check_struct PARAMS ((struct type *)); |
| 567 | |
| 568 | extern struct type * |
| 569 | check_union PARAMS ((struct type *)); |
| 570 | |
| 571 | extern struct type * |
| 572 | check_enum PARAMS ((struct type *)); |
| 573 | |
| 574 | extern struct symbol * |
| 575 | block_function PARAMS ((struct block *)); |
| 576 | |
| 577 | extern struct symbol * |
| 578 | find_pc_function PARAMS ((CORE_ADDR)); |
| 579 | |
| 580 | extern int |
| 581 | find_pc_partial_function PARAMS ((CORE_ADDR, char **, CORE_ADDR *)); |
| 582 | |
| 583 | extern void |
| 584 | clear_pc_function_cache PARAMS ((void)); |
| 585 | |
| 586 | extern struct partial_symtab * |
| 587 | lookup_partial_symtab PARAMS ((char *)); |
| 588 | |
| 589 | extern struct partial_symtab * |
| 590 | find_pc_psymtab PARAMS ((CORE_ADDR)); |
| 591 | |
| 592 | extern struct symtab * |
| 593 | find_pc_symtab PARAMS ((CORE_ADDR)); |
| 594 | |
| 595 | extern struct partial_symbol * |
| 596 | find_pc_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR)); |
| 597 | |
| 598 | extern int |
| 599 | find_pc_line_pc_range PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *)); |
| 600 | |
| 601 | extern int |
| 602 | contained_in PARAMS ((struct block *, struct block *)); |
| 603 | |
| 604 | extern void |
| 605 | reread_symbols PARAMS ((void)); |
| 606 | |
| 607 | /* Functions for dealing with the minimal symbol table, really a misc |
| 608 | address<->symbol mapping for things we don't have debug symbols for. */ |
| 609 | |
| 610 | extern void |
| 611 | prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR, |
| 612 | enum minimal_symbol_type)); |
| 613 | |
| 614 | extern void |
| 615 | prim_record_minimal_symbol_and_info PARAMS ((const char *, CORE_ADDR, |
| 616 | enum minimal_symbol_type, |
| 617 | char *info)); |
| 618 | |
| 619 | extern struct minimal_symbol * |
| 620 | lookup_minimal_symbol PARAMS ((const char *, struct objfile *)); |
| 621 | |
| 622 | extern struct minimal_symbol * |
| 623 | lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR)); |
| 624 | |
| 625 | extern void |
| 626 | init_minimal_symbol_collection PARAMS ((void)); |
| 627 | |
| 628 | extern void |
| 629 | discard_minimal_symbols PARAMS ((int)); |
| 630 | |
| 631 | extern void |
| 632 | install_minimal_symbols PARAMS ((struct objfile *)); |
| 633 | |
| 634 | struct symtab_and_line |
| 635 | { |
| 636 | struct symtab *symtab; |
| 637 | int line; |
| 638 | CORE_ADDR pc; |
| 639 | CORE_ADDR end; |
| 640 | }; |
| 641 | |
| 642 | struct symtabs_and_lines |
| 643 | { |
| 644 | struct symtab_and_line *sals; |
| 645 | int nelts; |
| 646 | }; |
| 647 | |
| 648 | /* Given a pc value, return line number it is in. |
| 649 | Second arg nonzero means if pc is on the boundary |
| 650 | use the previous statement's line number. */ |
| 651 | |
| 652 | extern struct symtab_and_line |
| 653 | find_pc_line PARAMS ((CORE_ADDR, int)); |
| 654 | |
| 655 | /* Given a symtab and line number, return the pc there. */ |
| 656 | |
| 657 | extern CORE_ADDR |
| 658 | find_line_pc PARAMS ((struct symtab *, int)); |
| 659 | |
| 660 | extern int |
| 661 | find_line_pc_range PARAMS ((struct symtab *, int, CORE_ADDR *, CORE_ADDR *)); |
| 662 | |
| 663 | extern void |
| 664 | resolve_sal_pc PARAMS ((struct symtab_and_line *)); |
| 665 | |
| 666 | /* Given a string, return the line specified by it. |
| 667 | For commands like "list" and "breakpoint". */ |
| 668 | |
| 669 | extern struct symtabs_and_lines |
| 670 | decode_line_spec PARAMS ((char *, int)); |
| 671 | |
| 672 | extern struct symtabs_and_lines |
| 673 | decode_line_spec_1 PARAMS ((char *, int)); |
| 674 | |
| 675 | extern struct symtabs_and_lines |
| 676 | decode_line_1 PARAMS ((char **, int, struct symtab *, int)); |
| 677 | |
| 678 | /* Symmisc.c */ |
| 679 | |
| 680 | #if MAINTENANCE_CMDS |
| 681 | |
| 682 | void |
| 683 | maintenance_print_symbols PARAMS ((char *, int)); |
| 684 | |
| 685 | void |
| 686 | maintenance_print_psymbols PARAMS ((char *, int)); |
| 687 | |
| 688 | void |
| 689 | maintenance_print_msymbols PARAMS ((char *, int)); |
| 690 | |
| 691 | void |
| 692 | maintenance_print_objfiles PARAMS ((char *, int)); |
| 693 | |
| 694 | #endif |
| 695 | |
| 696 | extern void |
| 697 | free_symtab PARAMS ((struct symtab *)); |
| 698 | |
| 699 | /* Symbol-reading stuff in symfile.c and solib.c. */ |
| 700 | |
| 701 | extern struct symtab * |
| 702 | psymtab_to_symtab PARAMS ((struct partial_symtab *)); |
| 703 | |
| 704 | extern void |
| 705 | clear_solib PARAMS ((void)); |
| 706 | |
| 707 | extern struct objfile * |
| 708 | symbol_file_add PARAMS ((char *, int, CORE_ADDR, int, int, int)); |
| 709 | |
| 710 | /* source.c */ |
| 711 | |
| 712 | extern int |
| 713 | identify_source_line PARAMS ((struct symtab *, int, int)); |
| 714 | |
| 715 | extern void |
| 716 | print_source_lines PARAMS ((struct symtab *, int, int, int)); |
| 717 | |
| 718 | extern void |
| 719 | forget_cached_source_info PARAMS ((void)); |
| 720 | |
| 721 | extern void |
| 722 | select_source_symtab PARAMS ((struct symtab *)); |
| 723 | |
| 724 | extern char ** |
| 725 | make_symbol_completion_list PARAMS ((char *)); |
| 726 | |
| 727 | /* symtab.c */ |
| 728 | |
| 729 | extern void |
| 730 | clear_symtab_users_once PARAMS ((void)); |
| 731 | |
| 732 | extern struct partial_symtab * |
| 733 | find_main_psymtab PARAMS ((void)); |
| 734 | |
| 735 | extern struct type * |
| 736 | find_nested_type PARAMS ((struct type *, char*)); |
| 737 | |
| 738 | /* blockframe.c */ |
| 739 | |
| 740 | extern struct blockvector * |
| 741 | blockvector_for_pc PARAMS ((CORE_ADDR, int *)); |
| 742 | |
| 743 | /* symfile.c */ |
| 744 | |
| 745 | extern enum language |
| 746 | deduce_language_from_filename PARAMS ((char *)); |
| 747 | |
| 748 | #endif /* !defined(SYMTAB_H) */ |