1 /* Symbol table definitions for GDB.
2 Copyright (C) 1986, 1989, 1991, 1992 Free Software Foundation, Inc.
4 This file is part of GDB.
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.
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.
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. */
20 #if !defined (SYMTAB_H)
23 /* Some definitions and declarations to go with use of obstacks. */
26 #define obstack_chunk_alloc xmalloc
27 #define obstack_chunk_free free
29 /* Define a structure for the information that is common to all symbol types,
30 including minimal symbols, partial symbols, and full symbols. */
32 struct general_symbol_info
34 /* Name of the symbol. This is a required field. Storage for the name is
35 allocated on the psymbol_obstack or symbol_obstack for the associated
40 /* Constant value, or address if static, or register number,
41 or offset in arguments, or offset in stack frame. All of
42 these are in host byte order (though what they point to might
43 be in target byte order, e.g. LOC_CONST_BYTES).
45 Note that the address of a function is SYMBOL_VALUE_ADDRESS (pst)
46 in a partial symbol table, but BLOCK_START (SYMBOL_BLOCK_VALUE (st))
51 /* for LOC_CONST, LOC_REGISTER, LOC_ARG, LOC_REF_ARG, LOC_REGPARM,
60 /* for LOC_CONST_BYTES */
64 /* for LOC_STATIC, LOC_LABEL */
68 /* for opaque typedef struct chain */
74 /* In a multilanguage environment, some language specific information may
75 need to be recorded along with each symbol. */
77 struct language_dependent_info
80 /* Record the language that this information applies to. */
82 enum language language;
84 /* Since one and only one language can apply, wrap the information inside
102 /* Which section is this symbol in? This is an index into
103 section_offsets for this objfile. Negative means that the symbol
104 does not get relocated relative to a section. */
105 /* Disclaimer: currently this is just used for xcoff, so don't expect
106 all symbol-reading code to set it correctly. */
110 #define SYMBOL_NAME(symbol) (symbol)->ginfo.name
111 #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.value
112 #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address
113 #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes
114 #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block
115 #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain
116 #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.lang_specific.language
117 #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section
119 #define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \
120 (symbol)->ginfo.lang_specific.lang_u.cplus_specific.demangled_name
123 extern int demangle; /* We reference it, so go ahead and declare it. */
125 /* Macro that initializes the language dependent portion of a symbol
126 depending upon the language for the symbol. */
128 #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \
130 SYMBOL_LANGUAGE (symbol) = language; \
131 if (SYMBOL_LANGUAGE (symbol) == language_cplus) \
133 SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
135 else if (SYMBOL_LANGUAGE (symbol) == language_chill) \
137 SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \
141 memset (&(symbol)->ginfo.lang_specific.lang_u, 0, \
142 sizeof ((symbol)->ginfo.lang_specific.lang_u)); \
146 /* Macro that attempts to initialize the demangled name for a symbol,
147 based on the language of that symbol. If the language is set to
148 language_auto, it will attempt to find any demangling algorithm
149 that works and then set the language appropriately. If no demangling
150 of any kind is found, the language is set back to language_unknown,
151 so we can avoid doing this work again the next time we encounter
152 the symbol. Any required space to store the name is obtained from the
153 specified obstack. */
155 #define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \
157 char *demangled = NULL; \
158 if (SYMBOL_LANGUAGE (symbol) == language_cplus \
159 || SYMBOL_LANGUAGE (symbol) == language_auto) \
162 cplus_demangle (SYMBOL_NAME (symbol), DMGL_PARAMS | DMGL_ANSI);\
163 if (demangled != NULL) \
165 SYMBOL_LANGUAGE (symbol) = language_cplus; \
166 SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \
167 obsavestring (demangled, strlen (demangled), (obstack)); \
172 SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
175 if (demangled == NULL \
176 && (SYMBOL_LANGUAGE (symbol) == language_chill \
177 || SYMBOL_LANGUAGE (symbol) == language_auto)) \
180 chill_demangle (SYMBOL_NAME (symbol)); \
181 if (demangled != NULL) \
183 SYMBOL_LANGUAGE (symbol) = language_chill; \
184 SYMBOL_CHILL_DEMANGLED_NAME (symbol) = \
185 obsavestring (demangled, strlen (demangled), (obstack)); \
190 SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \
193 if (SYMBOL_LANGUAGE (symbol) == language_auto) \
195 SYMBOL_LANGUAGE (symbol) = language_unknown; \
199 /* Macro that returns the demangled name for a symbol based on the language
200 for that symbol. If no demangled name exists, returns NULL. */
202 #define SYMBOL_DEMANGLED_NAME(symbol) \
203 (SYMBOL_LANGUAGE (symbol) == language_cplus \
204 ? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \
205 : (SYMBOL_LANGUAGE (symbol) == language_chill \
206 ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) \
209 #define SYMBOL_CHILL_DEMANGLED_NAME(symbol) \
210 (symbol)->ginfo.lang_specific.lang_u.chill_specific.demangled_name
212 /* Macro that returns the "natural source name" of a symbol. In C++ this is
213 the "demangled" form of the name if demangle is on and the "mangled" form
214 of the name if demangle is off. In other languages this is just the
215 symbol name. The result should never be NULL. */
217 #define SYMBOL_SOURCE_NAME(symbol) \
218 (demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \
219 ? SYMBOL_DEMANGLED_NAME (symbol) \
220 : SYMBOL_NAME (symbol))
222 /* Macro that returns the "natural assembly name" of a symbol. In C++ this is
223 the "mangled" form of the name if demangle is off, or if demangle is on and
224 asm_demangle is off. Otherwise if asm_demangle is on it is the "demangled"
225 form. In other languages this is just the symbol name. The result should
228 #define SYMBOL_LINKAGE_NAME(symbol) \
229 (demangle && asm_demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \
230 ? SYMBOL_DEMANGLED_NAME (symbol) \
231 : SYMBOL_NAME (symbol))
233 /* Macro that tests a symbol for a match against a specified name string.
234 First test the unencoded name, then looks for and test a C++ encoded
235 name if it exists. Note that whitespace is ignored while attempting to
236 match a C++ encoded name, so that "foo::bar(int,long)" is the same as
237 "foo :: bar (int, long)".
238 Evaluates to zero if the match fails, or nonzero if it succeeds. */
240 #define SYMBOL_MATCHES_NAME(symbol, name) \
241 (STREQ (SYMBOL_NAME (symbol), (name)) \
242 || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \
243 && strcmp_iw (SYMBOL_DEMANGLED_NAME (symbol), (name)) == 0))
245 /* Macro that tests a symbol for an re-match against the last compiled regular
246 expression. First test the unencoded name, then look for and test a C++
247 encoded name if it exists.
248 Evaluates to zero if the match fails, or nonzero if it succeeds. */
250 #define SYMBOL_MATCHES_REGEXP(symbol) \
251 (re_exec (SYMBOL_NAME (symbol)) != 0 \
252 || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \
253 && re_exec (SYMBOL_DEMANGLED_NAME (symbol)) != 0))
255 /* Define a simple structure used to hold some very basic information about
256 all defined global symbols (text, data, bss, abs, etc). The only required
257 information is the general_symbol_info.
259 In many cases, even if a file was compiled with no special options for
260 debugging at all, as long as was not stripped it will contain sufficient
261 information to build a useful minimal symbol table using this structure.
262 Even when a file contains enough debugging information to build a full
263 symbol table, these minimal symbols are still useful for quickly mapping
264 between names and addresses, and vice versa. They are also sometimes
265 used to figure out what full symbol table entries need to be read in. */
267 struct minimal_symbol
270 /* The general symbol info required for all types of symbols. */
272 struct general_symbol_info ginfo;
274 /* The info field is available for caching machine-specific information that
275 The AMD 29000 tdep.c uses it to remember things it has decoded from the
276 instructions in the function header, so it doesn't have to rederive the
277 info constantly (over a serial line). It is initialized to zero and
278 stays that way until target-dependent code sets it. Storage for any data
279 pointed to by this field should be allocated on the symbol_obstack for
280 the associated objfile. The type would be "void *" except for reasons
281 of compatibility with older compilers. This field is optional. */
285 /* Classification types for this symbol. These should be taken as "advisory
286 only", since if gdb can't easily figure out a classification it simply
287 selects mst_unknown. It may also have to guess when it can't figure out
288 which is a better match between two types (mst_data versus mst_bss) for
289 example. Since the minimal symbol info is sometimes derived from the
290 BFD library's view of a file, we need to live with what information bfd
293 enum minimal_symbol_type
295 mst_unknown = 0, /* Unknown type, the default */
296 mst_text, /* Generally executable instructions */
297 mst_data, /* Generally initialized data */
298 mst_bss, /* Generally uninitialized data */
299 mst_abs /* Generally absolute (nonrelocatable) */
304 #define MSYMBOL_INFO(msymbol) (msymbol)->info
305 #define MSYMBOL_TYPE(msymbol) (msymbol)->type
308 /* All of the name-scope contours of the program
309 are represented by `struct block' objects.
310 All of these objects are pointed to by the blockvector.
312 Each block represents one name scope.
313 Each lexical context has its own block.
315 The blockvector begins with some special blocks.
316 The GLOBAL_BLOCK contains all the symbols defined in this compilation
317 whose scope is the entire program linked together.
318 The STATIC_BLOCK contains all the symbols whose scope is the
319 entire compilation excluding other separate compilations.
320 Blocks starting with the FIRST_LOCAL_BLOCK are not special.
322 Each block records a range of core addresses for the code that
323 is in the scope of the block. The STATIC_BLOCK and GLOBAL_BLOCK
324 give, for the range of code, the entire range of code produced
325 by the compilation that the symbol segment belongs to.
327 The blocks appear in the blockvector
328 in order of increasing starting-address,
329 and, within that, in order of decreasing ending-address.
331 This implies that within the body of one function
332 the blocks appear in the order of a depth-first tree walk. */
336 /* Number of blocks in the list. */
338 /* The blocks themselves. */
339 struct block *block[1];
342 #define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks
343 #define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n]
345 /* Special block numbers */
347 #define GLOBAL_BLOCK 0
348 #define STATIC_BLOCK 1
349 #define FIRST_LOCAL_BLOCK 2
354 /* Addresses in the executable code that are in this block. */
359 /* The symbol that names this block, if the block is the body of a
360 function; otherwise, zero. */
362 struct symbol *function;
364 /* The `struct block' for the containing block, or 0 if none.
366 The superblock of a top-level local block (i.e. a function in the
367 case of C) is the STATIC_BLOCK. The superblock of the
368 STATIC_BLOCK is the GLOBAL_BLOCK. */
370 struct block *superblock;
372 /* Version of GCC used to compile the function corresponding
373 to this block, or 0 if not compiled with GCC. When possible,
374 GCC should be compatible with the native compiler, or if that
375 is not feasible, the differences should be fixed during symbol
376 reading. As of 16 Apr 93, this flag is never used to distinguish
377 between gcc2 and the native compiler.
379 If there is no function corresponding to this block, this meaning
380 of this flag is undefined. */
382 unsigned char gcc_compile_flag;
384 /* Number of local symbols. */
390 struct symbol *sym[1];
393 #define BLOCK_START(bl) (bl)->startaddr
394 #define BLOCK_END(bl) (bl)->endaddr
395 #define BLOCK_NSYMS(bl) (bl)->nsyms
396 #define BLOCK_SYM(bl, n) (bl)->sym[n]
397 #define BLOCK_FUNCTION(bl) (bl)->function
398 #define BLOCK_SUPERBLOCK(bl) (bl)->superblock
399 #define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag
401 /* Nonzero if symbols of block BL should be sorted alphabetically. */
403 #define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40)
406 /* Represent one symbol name; a variable, constant, function or typedef. */
408 /* Different name spaces for symbols. Looking up a symbol specifies a
409 namespace and ignores symbol definitions in other name spaces. */
413 /* UNDEF_NAMESPACE is used when a namespace has not been discovered or
414 none of the following apply. This usually indicates an error either
415 in the symbol information or in gdb's handling of symbols. */
419 /* VAR_NAMESPACE is the usual namespace. In C, this contains variables,
420 function names, typedef names and enum type values. */
424 /* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names.
425 Thus, if `struct foo' is used in a C program, it produces a symbol named
426 `foo' in the STRUCT_NAMESPACE. */
430 /* LABEL_NAMESPACE may be used for names of labels (for gotos);
431 currently it is not used and labels are not recorded at all. */
436 /* An address-class says where to find the value of a symbol. */
440 /* Not used; catches errors */
444 /* Value is constant int SYMBOL_VALUE, host byteorder */
448 /* Value is at fixed address SYMBOL_VALUE_ADDRESS */
452 /* Value is in register */
456 /* Value is at spec'd offset in arglist */
460 /* Value address is at spec'd offset in arglist. Currently this is used
461 for C++ references (and presumably will be used for Pascal VAR
462 parameters), and is only dereferenced in certain contexts. */
466 /* Value is in specified register. Just like LOC_REGISTER except this is
467 an argument. Probably the cleaner way to handle this would be to
468 separate address_class (which would include separate ARG and LOCAL
469 to deal with FRAME_ARGS_ADDRESS versus FRAME_LOCALS_ADDRESS), and
472 For some symbol formats (stabs, for some compilers at least),
473 gdb generates a LOC_ARG and a LOC_REGISTER rather than a LOC_REGPARM.
474 This is because that's what the compiler does, but perhaps it would
475 be better if the symbol-reading code detected this (is it possible?)
476 and generated a LOC_REGPARM. */
480 /* Value is at spec'd offset in stack frame */
484 /* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace
485 STRUCT_NAMESPACE all have this class. */
489 /* Value is address SYMBOL_VALUE_ADDRESS in the code */
493 /* Value is address SYMBOL_VALUE_BLOCK of a `struct block'. Function names
498 /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in
499 target byte order. */
503 /* Value is arg at spec'd offset in stack frame. Differs from LOC_LOCAL in
504 that symbol is an argument; differs from LOC_ARG in that we find it
505 in the frame (FRAME_LOCALS_ADDRESS), not in the arglist
506 (FRAME_ARGS_ADDRESS). Added for i960, which passes args in regs then
511 /* The variable does not actually exist in the program.
512 The SYMBOL_VALUE is ignored. */
520 /* The general symbol info required for all types of symbols. */
522 struct general_symbol_info ginfo;
524 /* Name space code. */
526 enum namespace namespace;
530 enum address_class class;
532 /* Data type of value */
536 /* Line number of definition. FIXME: Should we really make the assumption
537 that nobody will try to debug files longer than 64K lines? What about
538 machine generated programs? */
542 /* Some symbols require an additional value to be recorded on a per-
543 symbol basis. Stash those values here. */
547 /* for OP_BASEREG in DWARF location specs */
550 short regno_valid; /* 0 == regno invalid; !0 == regno valid */
551 short regno; /* base register number {0, 1, 2, ...} */
558 #define SYMBOL_NAMESPACE(symbol) (symbol)->namespace
559 #define SYMBOL_CLASS(symbol) (symbol)->class
560 #define SYMBOL_TYPE(symbol) (symbol)->type
561 #define SYMBOL_LINE(symbol) (symbol)->line
562 #define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg.regno
564 /* This currently fails because some symbols are not being initialized
565 to zero on allocation, and no code is currently setting this value.
566 Basereg handling will probably change significantly in the next release.
570 #define SYMBOL_BASEREG_VALID(symbol) (symbol)->aux_value.basereg.regno_valid
572 #define SYMBOL_BASEREG_VALID(symbol) 0
576 /* A partial_symbol records the name, namespace, and address class of
577 symbols whose types we have not parsed yet. For functions, it also
578 contains their memory address, so we can find them from a PC value.
579 Each partial_symbol sits in a partial_symtab, all of which are chained
580 on a partial symtab list and which points to the corresponding
581 normal symtab once the partial_symtab has been referenced. */
583 struct partial_symbol
586 /* The general symbol info required for all types of symbols. */
588 struct general_symbol_info ginfo;
590 /* Name space code. */
592 enum namespace namespace;
594 /* Address class (for info_symbols) */
596 enum address_class class;
600 #define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace
601 #define PSYMBOL_CLASS(psymbol) (psymbol)->class
604 /* Source-file information. This describes the relation between source files,
605 ine numbers and addresses in the program text. */
609 int length; /* Number of source files described */
610 struct source *source[1]; /* Descriptions of the files */
613 /* Each item represents a line-->pc (or the reverse) mapping. This is
614 somewhat more wasteful of space than one might wish, but since only
615 the files which are actually debugged are read in to core, we don't
618 struct linetable_entry
627 struct linetable_entry item[1];
630 /* All the information on one source file. */
634 char *name; /* Name of file */
635 struct linetable contents;
638 /* How to relocate the symbols from each section in a symbol file.
639 Each struct contains an array of offsets.
640 The ordering and meaning of the offsets is file-type-dependent;
641 typically it is indexed by section numbers or symbol types or
644 To give us flexibility in changing the internal representation
645 of these offsets, the ANOFFSET macro must be used to insert and
646 extract offset values in the struct. */
648 struct section_offsets
650 CORE_ADDR offsets[1]; /* As many as needed. */
653 #define ANOFFSET(secoff, whichone) (secoff->offsets[whichone])
655 /* Each source file is represented by a struct symtab.
656 These objects are chained through the `next' field. */
661 /* Chain of all existing symtabs. */
665 /* List of all symbol scope blocks for this symtab. */
667 struct blockvector *blockvector;
669 /* Table mapping core addresses to line numbers for this file.
670 Can be NULL if none. */
672 struct linetable *linetable;
674 /* Section in objfile->section_offsets for the blockvector and
677 int block_line_section;
679 /* If several symtabs share a blockvector, exactly one of them
680 should be designed the primary, so that the blockvector
681 is relocated exactly once by objfile_relocate. */
685 /* Name of this source file. */
689 /* Directory in which it was compiled, or NULL if we don't know. */
693 /* This component says how to free the data we point to:
694 free_contents => do a tree walk and free each object.
695 free_nothing => do nothing; some other symtab will free
696 the data this one uses.
697 free_linetable => free just the linetable. */
701 free_nothing, free_contents, free_linetable
705 /* Pointer to one block of storage to be freed, if nonzero. */
706 /* This is IN ADDITION to the action indicated by free_code. */
710 /* Total number of lines found in source file. */
714 /* Array mapping line number to character position. */
718 /* Language of this source file. */
720 enum language language;
722 /* String of version information. May be zero. */
726 /* Full name of file as found by searching the source path.
727 NULL if not yet known. */
731 /* Object file from which this symbol information was read. */
733 struct objfile *objfile;
735 /* Anything extra for this symtab. This is for target machines
736 with special debugging info of some sort (which cannot just
737 be represented in a normal symtab). */
739 #if defined (EXTRA_SYMTAB_INFO)
745 #define BLOCKVECTOR(symtab) (symtab)->blockvector
746 #define LINETABLE(symtab) (symtab)->linetable
749 /* Each source file that has not been fully read in is represented by
750 a partial_symtab. This contains the information on where in the
751 executable the debugging symbols for a specific file are, and a
752 list of names of global symbols which are located in this file.
753 They are all chained on partial symtab lists.
755 Even after the source file has been read into a symtab, the
756 partial_symtab remains around. They are allocated on an obstack,
757 psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks-
758 style execution of a bunch of .o's. */
760 struct partial_symtab
763 /* Chain of all existing partial symtabs. */
765 struct partial_symtab *next;
767 /* Name of the source file which this partial_symtab defines */
771 /* Information about the object file from which symbols should be read. */
773 struct objfile *objfile;
775 /* Set of relocation offsets to apply to each section. */
777 struct section_offsets *section_offsets;
779 /* Range of text addresses covered by this file; texthigh is the
780 beginning of the next section. */
785 /* Array of pointers to all of the partial_symtab's which this one
786 depends on. Since this array can only be set to previous or
787 the current (?) psymtab, this dependency tree is guaranteed not
788 to have any loops. */
790 struct partial_symtab **dependencies;
792 int number_of_dependencies;
794 /* Global symbol list. This list will be sorted after readin to
795 improve access. Binary search will be the usual method of
796 finding a symbol within it. globals_offset is an integer offset
797 within global_psymbols[]. */
802 /* Static symbol list. This list will *not* be sorted after readin;
803 to find a symbol in it, exhaustive search must be used. This is
804 reasonable because searches through this list will eventually
805 lead to either the read in of a files symbols for real (assumed
806 to take a *lot* of time; check) or an error (and we don't care
807 how long errors take). This is an offset and size within
808 static_psymbols[]. */
813 /* Pointer to symtab eventually allocated for this source file, 0 if
814 !readin or if we haven't looked for the symtab after it was readin. */
816 struct symtab *symtab;
818 /* Pointer to function which will read in the symtab corresponding to
821 void (*read_symtab) PARAMS ((struct partial_symtab *));
823 /* Information that lets read_symtab() locate the part of the symbol table
824 that this psymtab corresponds to. This information is private to the
825 format-dependent symbol reading routines. For further detail examine
826 the various symbol reading modules. Should really be (void *) but is
827 (char *) as with other such gdb variables. (FIXME) */
829 char *read_symtab_private;
831 /* Non-zero if the symtab corresponding to this psymtab has been readin */
833 unsigned char readin;
836 /* A fast way to get from a psymtab to its symtab (after the first time). */
837 #define PSYMTAB_TO_SYMTAB(pst) \
838 ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst))
841 /* The virtual function table is now an array of structures which have the
842 form { int16 offset, delta; void *pfn; }.
844 In normal virtual function tables, OFFSET is unused.
845 DELTA is the amount which is added to the apparent object's base
846 address in order to point to the actual object to which the
847 virtual function should be applied.
848 PFN is a pointer to the virtual function.
850 Note that this macro is g++ specific (FIXME). */
852 #define VTBL_FNADDR_OFFSET 2
854 /* Macro that yields non-zero value iff NAME is the prefix for C++ operator
855 names. If you leave out the parenthesis here you will lose!
856 Currently 'o' 'p' CPLUS_MARKER is used for both the symbol in the
857 symbol-file and the names in gdb's symbol table.
858 Note that this macro is g++ specific (FIXME). */
860 #define OPNAME_PREFIX_P(NAME) \
861 ((NAME)[0] == 'o' && (NAME)[1] == 'p' && (NAME)[2] == CPLUS_MARKER)
863 /* Macro that yields non-zero value iff NAME is the prefix for C++ vtbl
864 names. Note that this macro is g++ specific (FIXME). */
866 #define VTBL_PREFIX_P(NAME) \
867 ((NAME)[3] == CPLUS_MARKER && !strncmp ((NAME), "_vt", 3))
869 /* Macro that yields non-zero value iff NAME is the prefix for C++ destructor
870 names. Note that this macro is g++ specific (FIXME). */
872 #define DESTRUCTOR_PREFIX_P(NAME) \
873 ((NAME)[0] == '_' && (NAME)[1] == CPLUS_MARKER && (NAME)[2] == '_')
876 /* External variables and functions for the objects described above. */
878 /* This symtab variable specifies the current file for printing source lines */
880 extern struct symtab *current_source_symtab;
882 /* This is the next line to print for listing source lines. */
884 extern int current_source_line;
886 /* See the comment in symfile.c about how current_objfile is used. */
888 extern struct objfile *current_objfile;
890 extern struct symtab *
891 lookup_symtab PARAMS ((char *));
893 extern struct symbol *
894 lookup_symbol PARAMS ((const char *, const struct block *,
895 const enum namespace, int *, struct symtab **));
897 extern struct symbol *
898 lookup_block_symbol PARAMS ((const struct block *, const char *,
899 const enum namespace));
902 lookup_struct PARAMS ((char *, struct block *));
905 lookup_union PARAMS ((char *, struct block *));
908 lookup_enum PARAMS ((char *, struct block *));
910 extern struct symbol *
911 block_function PARAMS ((struct block *));
913 extern struct symbol *
914 find_pc_function PARAMS ((CORE_ADDR));
917 find_pc_partial_function PARAMS ((CORE_ADDR, char **, CORE_ADDR *));
920 clear_pc_function_cache PARAMS ((void));
922 extern struct partial_symtab *
923 lookup_partial_symtab PARAMS ((char *));
925 extern struct partial_symtab *
926 find_pc_psymtab PARAMS ((CORE_ADDR));
928 extern struct symtab *
929 find_pc_symtab PARAMS ((CORE_ADDR));
931 extern struct partial_symbol *
932 find_pc_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR));
935 find_pc_line_pc_range PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *));
938 contained_in PARAMS ((struct block *, struct block *));
941 reread_symbols PARAMS ((void));
943 /* Functions for dealing with the minimal symbol table, really a misc
944 address<->symbol mapping for things we don't have debug symbols for. */
947 prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR,
948 enum minimal_symbol_type));
951 prim_record_minimal_symbol_and_info PARAMS ((const char *, CORE_ADDR,
952 enum minimal_symbol_type,
953 char *info, int section));
955 extern struct minimal_symbol *
956 lookup_minimal_symbol PARAMS ((const char *, struct objfile *));
958 extern struct minimal_symbol *
959 lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR));
962 init_minimal_symbol_collection PARAMS ((void));
965 discard_minimal_symbols PARAMS ((int));
968 install_minimal_symbols PARAMS ((struct objfile *));
970 struct symtab_and_line
972 struct symtab *symtab;
978 struct symtabs_and_lines
980 struct symtab_and_line *sals;
984 /* Given a pc value, return line number it is in. Second arg nonzero means
985 if pc is on the boundary use the previous statement's line number. */
987 extern struct symtab_and_line
988 find_pc_line PARAMS ((CORE_ADDR, int));
990 /* Given a symtab and line number, return the pc there. */
993 find_line_pc PARAMS ((struct symtab *, int));
996 find_line_pc_range PARAMS ((struct symtab *, int, CORE_ADDR *, CORE_ADDR *));
999 resolve_sal_pc PARAMS ((struct symtab_and_line *));
1001 /* Given a string, return the line specified by it. For commands like "list"
1002 and "breakpoint". */
1004 extern struct symtabs_and_lines
1005 decode_line_spec PARAMS ((char *, int));
1007 extern struct symtabs_and_lines
1008 decode_line_spec_1 PARAMS ((char *, int));
1010 extern struct symtabs_and_lines
1011 decode_line_1 PARAMS ((char **, int, struct symtab *, int));
1015 #if MAINTENANCE_CMDS
1018 maintenance_print_symbols PARAMS ((char *, int));
1021 maintenance_print_psymbols PARAMS ((char *, int));
1024 maintenance_print_msymbols PARAMS ((char *, int));
1027 maintenance_print_objfiles PARAMS ((char *, int));
1032 free_symtab PARAMS ((struct symtab *));
1034 /* Symbol-reading stuff in symfile.c and solib.c. */
1036 extern struct symtab *
1037 psymtab_to_symtab PARAMS ((struct partial_symtab *));
1040 clear_solib PARAMS ((void));
1042 extern struct objfile *
1043 symbol_file_add PARAMS ((char *, int, CORE_ADDR, int, int, int));
1048 identify_source_line PARAMS ((struct symtab *, int, int));
1051 print_source_lines PARAMS ((struct symtab *, int, int, int));
1054 forget_cached_source_info PARAMS ((void));
1057 select_source_symtab PARAMS ((struct symtab *));
1060 make_symbol_completion_list PARAMS ((char *));
1065 clear_symtab_users_once PARAMS ((void));
1067 extern struct partial_symtab *
1068 find_main_psymtab PARAMS ((void));
1072 extern struct blockvector *
1073 blockvector_for_pc PARAMS ((CORE_ADDR, int *));
1077 extern enum language
1078 deduce_language_from_filename PARAMS ((char *));
1080 #endif /* !defined(SYMTAB_H) */