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
94 /* start-sanitize-chill */
100 /* end-sanitize-chill */
104 /* Which section is this symbol in? This is an index into
105 section_offsets for this objfile. Negative means that the symbol
106 does not get relocated relative to a section. */
107 /* Disclaimer: currently this is just used for xcoff, so don't expect
108 all symbol-reading code to set it correctly. */
112 #define SYMBOL_NAME(symbol) (symbol)->ginfo.name
113 #define SYMBOL_VALUE(symbol) (symbol)->ginfo.value.value
114 #define SYMBOL_VALUE_ADDRESS(symbol) (symbol)->ginfo.value.address
115 #define SYMBOL_VALUE_BYTES(symbol) (symbol)->ginfo.value.bytes
116 #define SYMBOL_BLOCK_VALUE(symbol) (symbol)->ginfo.value.block
117 #define SYMBOL_VALUE_CHAIN(symbol) (symbol)->ginfo.value.chain
118 #define SYMBOL_LANGUAGE(symbol) (symbol)->ginfo.lang_specific.language
119 #define SYMBOL_SECTION(symbol) (symbol)->ginfo.section
121 #define SYMBOL_CPLUS_DEMANGLED_NAME(symbol) \
122 (symbol)->ginfo.lang_specific.lang_u.cplus_specific.demangled_name
125 extern int demangle; /* We reference it, so go ahead and declare it. */
127 /* Macro that initializes the language dependent portion of a symbol
128 depending upon the language for the symbol. */
130 #define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \
132 SYMBOL_LANGUAGE (symbol) = language; \
133 if (SYMBOL_LANGUAGE (symbol) == language_cplus) \
135 SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
137 /* start-sanitize-chill */ \
138 else if (SYMBOL_LANGUAGE (symbol) == language_chill) \
140 SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \
142 /* end-sanitize-chill */ \
145 memset (&(symbol)->ginfo.lang_specific.lang_u, 0, \
146 sizeof ((symbol)->ginfo.lang_specific.lang_u)); \
150 /* Macro that attempts to initialize the demangled name for a symbol,
151 based on the language of that symbol. If the language is set to
152 language_auto, it will attempt to find any demangling algorithm
153 that works and then set the language appropriately. If no demangling
154 of any kind is found, the language is set back to language_unknown,
155 so we can avoid doing this work again the next time we encounter
156 the symbol. Any required space to store the name is obtained from the
157 specified obstack. */
159 #define SYMBOL_INIT_DEMANGLED_NAME(symbol,obstack) \
161 char *demangled = NULL; \
162 if (SYMBOL_LANGUAGE (symbol) == language_cplus \
163 || SYMBOL_LANGUAGE (symbol) == language_auto) \
166 cplus_demangle (SYMBOL_NAME (symbol), DMGL_PARAMS | DMGL_ANSI);\
167 if (demangled != NULL) \
169 SYMBOL_LANGUAGE (symbol) = language_cplus; \
170 SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \
171 obsavestring (demangled, strlen (demangled), (obstack)); \
176 SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
179 /* start-sanitize-chill */ \
180 if (demangled == NULL \
181 && (SYMBOL_LANGUAGE (symbol) == language_chill \
182 || SYMBOL_LANGUAGE (symbol) == language_auto)) \
185 chill_demangle (SYMBOL_NAME (symbol)); \
186 if (demangled != NULL) \
188 SYMBOL_LANGUAGE (symbol) = language_chill; \
189 SYMBOL_CHILL_DEMANGLED_NAME (symbol) = \
190 obsavestring (demangled, strlen (demangled), (obstack)); \
195 SYMBOL_CHILL_DEMANGLED_NAME (symbol) = NULL; \
198 /* end-sanitize-chill */ \
199 if (SYMBOL_LANGUAGE (symbol) == language_auto) \
201 SYMBOL_LANGUAGE (symbol) = language_unknown; \
205 /* Macro that returns the demangled name for a symbol based on the language
206 for that symbol. If no demangled name exists, returns NULL. */
208 #define SYMBOL_DEMANGLED_NAME(symbol) \
209 (SYMBOL_LANGUAGE (symbol) == language_cplus \
210 ? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \
213 /* start-sanitize-chill */
215 #define SYMBOL_CHILL_DEMANGLED_NAME(symbol) \
216 (symbol)->ginfo.lang_specific.lang_u.chill_specific.demangled_name
218 /* Redefine SYMBOL_DEMANGLED_NAME. This is simplier than trying to
219 devise a macro for which part of it can be cleanly sanitized away. */
221 #undef SYMBOL_DEMANGLED_NAME
222 #define SYMBOL_DEMANGLED_NAME(symbol) \
223 (SYMBOL_LANGUAGE (symbol) == language_cplus \
224 ? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \
225 : (SYMBOL_LANGUAGE (symbol) == language_chill \
226 ? SYMBOL_CHILL_DEMANGLED_NAME (symbol) \
229 /* end-sanitize-chill */
231 /* Macro that returns the "natural source name" of a symbol. In C++ this is
232 the "demangled" form of the name if demangle is on and the "mangled" form
233 of the name if demangle is off. In other languages this is just the
234 symbol name. The result should never be NULL. */
236 #define SYMBOL_SOURCE_NAME(symbol) \
237 (demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \
238 ? SYMBOL_DEMANGLED_NAME (symbol) \
239 : SYMBOL_NAME (symbol))
241 /* Macro that returns the "natural assembly name" of a symbol. In C++ this is
242 the "mangled" form of the name if demangle is off, or if demangle is on and
243 asm_demangle is off. Otherwise if asm_demangle is on it is the "demangled"
244 form. In other languages this is just the symbol name. The result should
247 #define SYMBOL_LINKAGE_NAME(symbol) \
248 (demangle && asm_demangle && SYMBOL_DEMANGLED_NAME (symbol) != NULL \
249 ? SYMBOL_DEMANGLED_NAME (symbol) \
250 : SYMBOL_NAME (symbol))
252 /* Macro that tests a symbol for a match against a specified name string.
253 First test the unencoded name, then looks for and test a C++ encoded
254 name if it exists. Note that whitespace is ignored while attempting to
255 match a C++ encoded name, so that "foo::bar(int,long)" is the same as
256 "foo :: bar (int, long)".
257 Evaluates to zero if the match fails, or nonzero if it succeeds. */
259 #define SYMBOL_MATCHES_NAME(symbol, name) \
260 (STREQ (SYMBOL_NAME (symbol), (name)) \
261 || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \
262 && strcmp_iw (SYMBOL_DEMANGLED_NAME (symbol), (name)) == 0))
264 /* Macro that tests a symbol for an re-match against the last compiled regular
265 expression. First test the unencoded name, then look for and test a C++
266 encoded name if it exists.
267 Evaluates to zero if the match fails, or nonzero if it succeeds. */
269 #define SYMBOL_MATCHES_REGEXP(symbol) \
270 (re_exec (SYMBOL_NAME (symbol)) != 0 \
271 || (SYMBOL_DEMANGLED_NAME (symbol) != NULL \
272 && re_exec (SYMBOL_DEMANGLED_NAME (symbol)) != 0))
274 /* Define a simple structure used to hold some very basic information about
275 all defined global symbols (text, data, bss, abs, etc). The only required
276 information is the general_symbol_info.
278 In many cases, even if a file was compiled with no special options for
279 debugging at all, as long as was not stripped it will contain sufficient
280 information to build a useful minimal symbol table using this structure.
281 Even when a file contains enough debugging information to build a full
282 symbol table, these minimal symbols are still useful for quickly mapping
283 between names and addresses, and vice versa. They are also sometimes
284 used to figure out what full symbol table entries need to be read in. */
286 struct minimal_symbol
289 /* The general symbol info required for all types of symbols. */
291 struct general_symbol_info ginfo;
293 /* The info field is available for caching machine-specific information that
294 The AMD 29000 tdep.c uses it to remember things it has decoded from the
295 instructions in the function header, so it doesn't have to rederive the
296 info constantly (over a serial line). It is initialized to zero and
297 stays that way until target-dependent code sets it. Storage for any data
298 pointed to by this field should be allocated on the symbol_obstack for
299 the associated objfile. The type would be "void *" except for reasons
300 of compatibility with older compilers. This field is optional. */
304 /* Classification types for this symbol. These should be taken as "advisory
305 only", since if gdb can't easily figure out a classification it simply
306 selects mst_unknown. It may also have to guess when it can't figure out
307 which is a better match between two types (mst_data versus mst_bss) for
308 example. Since the minimal symbol info is sometimes derived from the
309 BFD library's view of a file, we need to live with what information bfd
312 enum minimal_symbol_type
314 mst_unknown = 0, /* Unknown type, the default */
315 mst_text, /* Generally executable instructions */
316 mst_data, /* Generally initialized data */
317 mst_bss, /* Generally uninitialized data */
318 mst_abs /* Generally absolute (nonrelocatable) */
323 #define MSYMBOL_INFO(msymbol) (msymbol)->info
324 #define MSYMBOL_TYPE(msymbol) (msymbol)->type
327 /* All of the name-scope contours of the program
328 are represented by `struct block' objects.
329 All of these objects are pointed to by the blockvector.
331 Each block represents one name scope.
332 Each lexical context has its own block.
334 The first two blocks in the blockvector are special.
335 The first one contains all the symbols defined in this compilation
336 whose scope is the entire program linked together.
337 The second one contains all the symbols whose scope is the
338 entire compilation excluding other separate compilations.
339 In C, these correspond to global symbols and static symbols.
341 Each block records a range of core addresses for the code that
342 is in the scope of the block. The first two special blocks
343 give, for the range of code, the entire range of code produced
344 by the compilation that the symbol segment belongs to.
346 The blocks appear in the blockvector
347 in order of increasing starting-address,
348 and, within that, in order of decreasing ending-address.
350 This implies that within the body of one function
351 the blocks appear in the order of a depth-first tree walk. */
355 /* Number of blocks in the list. */
357 /* The blocks themselves. */
358 struct block *block[1];
361 #define BLOCKVECTOR_NBLOCKS(blocklist) (blocklist)->nblocks
362 #define BLOCKVECTOR_BLOCK(blocklist,n) (blocklist)->block[n]
364 /* Special block numbers */
366 #define GLOBAL_BLOCK 0
367 #define STATIC_BLOCK 1
368 #define FIRST_LOCAL_BLOCK 2
373 /* Addresses in the executable code that are in this block.
374 Note: in an unrelocated symbol segment in a file,
375 these are always zero. They can be filled in from the
376 N_LBRAC and N_RBRAC symbols in the loader symbol table. */
381 /* The symbol that names this block,
382 if the block is the body of a function;
384 Note: In an unrelocated symbol segment in an object file,
385 this field may be zero even when the block has a name.
386 That is because the block is output before the name
387 (since the name resides in a higher block).
388 Since the symbol does point to the block (as its value),
389 it is possible to find the block and set its name properly. */
391 struct symbol *function;
393 /* The `struct block' for the containing block, or 0 if none.
394 Note that in an unrelocated symbol segment in an object file
395 this pointer may be zero when the correct value should be
396 the second special block (for symbols whose scope is one compilation).
397 This is because the compiler outputs the special blocks at the
398 very end, after the other blocks. */
400 struct block *superblock;
402 /* A flag indicating whether or not the function corresponding
403 to this block was compiled with gcc or not. If there is no
404 function corresponding to this block, this meaning of this flag
405 is undefined. (In practice it will be 1 if the block was created
406 while processing a file compiled with gcc and 0 when not). */
408 unsigned char gcc_compile_flag;
410 /* Number of local symbols. */
416 struct symbol *sym[1];
419 #define BLOCK_START(bl) (bl)->startaddr
420 #define BLOCK_END(bl) (bl)->endaddr
421 #define BLOCK_NSYMS(bl) (bl)->nsyms
422 #define BLOCK_SYM(bl, n) (bl)->sym[n]
423 #define BLOCK_FUNCTION(bl) (bl)->function
424 #define BLOCK_SUPERBLOCK(bl) (bl)->superblock
425 #define BLOCK_GCC_COMPILED(bl) (bl)->gcc_compile_flag
427 /* Nonzero if symbols of block BL should be sorted alphabetically. */
429 #define BLOCK_SHOULD_SORT(bl) ((bl)->nsyms >= 40)
432 /* Represent one symbol name; a variable, constant, function or typedef. */
434 /* For a non-global symbol allocated statically,
435 the correct core address cannot be determined by the compiler.
436 The compiler puts an index number into the symbol's value field.
437 This index number can be matched with the "desc" field of
438 an entry in the loader symbol table. */
440 /* Different name spaces for symbols. Looking up a symbol specifies a
441 namespace and ignores symbol definitions in other name spaces. */
445 /* UNDEF_NAMESPACE is used when a namespace has not been discovered or
446 none of the following apply. This usually indicates an error either
447 in the symbol information or in gdb's handling of symbols. */
451 /* VAR_NAMESPACE is the usual namespace. In C, this contains variables,
452 function names, typedef names and enum type values. */
456 /* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names.
457 Thus, if `struct foo' is used in a C program, it produces a symbol named
458 `foo' in the STRUCT_NAMESPACE. */
462 /* LABEL_NAMESPACE may be used for names of labels (for gotos);
463 currently it is not used and labels are not recorded at all. */
468 /* An address-class says where to find the value of a symbol. */
472 /* Not used; catches errors */
476 /* Value is constant int SYMBOL_VALUE, host byteorder */
480 /* Value is at fixed address SYMBOL_VALUE_ADDRESS */
484 /* Value is in register */
488 /* Value is at spec'd offset in arglist */
492 /* Value address is at spec'd offset in arglist. */
496 /* Value is at spec'd offset in register window */
500 /* Value is at spec'd offset in stack frame */
504 /* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace
505 STRUCT_NAMESPACE all have this class. */
509 /* Value is address SYMBOL_VALUE_ADDRESS in the code */
513 /* Value is address SYMBOL_VALUE_BLOCK of a `struct block'. Function names
518 /* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in
519 target byte order. */
523 /* Value is arg at spec'd offset in stack frame. Differs from LOC_LOCAL in
524 that symbol is an argument; differs from LOC_ARG in that we find it
525 in the frame (FRAME_LOCALS_ADDRESS), not in the arglist
526 (FRAME_ARGS_ADDRESS). Added for i960, which passes args in regs then
531 /* The variable does not actually exist in the program.
532 The SYMBOL_VALUE is ignored. */
540 /* The general symbol info required for all types of symbols. */
542 struct general_symbol_info ginfo;
544 /* Name space code. */
546 enum namespace namespace;
550 enum address_class class;
552 /* Data type of value */
556 /* Line number of definition. FIXME: Should we really make the assumption
557 that nobody will try to debug files longer than 64K lines? What about
558 machine generated programs? */
562 /* Some symbols require an additional value to be recorded on a per-
563 symbol basis. Stash those values here. */
567 /* for OP_BASEREG in DWARF location specs */
570 short regno_valid; /* 0 == regno invalid; !0 == regno valid */
571 short regno; /* base register number {0, 1, 2, ...} */
578 #define SYMBOL_NAMESPACE(symbol) (symbol)->namespace
579 #define SYMBOL_CLASS(symbol) (symbol)->class
580 #define SYMBOL_TYPE(symbol) (symbol)->type
581 #define SYMBOL_LINE(symbol) (symbol)->line
582 #define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg.regno
584 /* This currently fails because some symbols are not being initialized
585 to zero on allocation, and no code is currently setting this value.
586 Basereg handling will probably change significantly in the next release.
590 #define SYMBOL_BASEREG_VALID(symbol) (symbol)->aux_value.basereg.regno_valid
592 #define SYMBOL_BASEREG_VALID(symbol) 0
596 /* A partial_symbol records the name, namespace, and address class of
597 symbols whose types we have not parsed yet. For functions, it also
598 contains their memory address, so we can find them from a PC value.
599 Each partial_symbol sits in a partial_symtab, all of which are chained
600 on a partial symtab list and which points to the corresponding
601 normal symtab once the partial_symtab has been referenced. */
603 struct partial_symbol
606 /* The general symbol info required for all types of symbols. */
608 struct general_symbol_info ginfo;
610 /* Name space code. */
612 enum namespace namespace;
614 /* Address class (for info_symbols) */
616 enum address_class class;
620 #define PSYMBOL_NAMESPACE(psymbol) (psymbol)->namespace
621 #define PSYMBOL_CLASS(psymbol) (psymbol)->class
624 /* Source-file information. This describes the relation between source files,
625 ine numbers and addresses in the program text. */
629 int length; /* Number of source files described */
630 struct source *source[1]; /* Descriptions of the files */
633 /* Each item represents a line-->pc (or the reverse) mapping. This is
634 somewhat more wasteful of space than one might wish, but since only
635 the files which are actually debugged are read in to core, we don't
638 struct linetable_entry
647 struct linetable_entry item[1];
650 /* All the information on one source file. */
654 char *name; /* Name of file */
655 struct linetable contents;
658 /* How to relocate the symbols from each section in a symbol file.
659 Each struct contains an array of offsets.
660 The ordering and meaning of the offsets is file-type-dependent;
661 typically it is indexed by section numbers or symbol types or
664 To give us flexibility in changing the internal representation
665 of these offsets, the ANOFFSET macro must be used to insert and
666 extract offset values in the struct. */
668 struct section_offsets
670 CORE_ADDR offsets[1]; /* As many as needed. */
673 #define ANOFFSET(secoff, whichone) (secoff->offsets[whichone])
675 /* Each source file is represented by a struct symtab.
676 These objects are chained through the `next' field. */
681 /* Chain of all existing symtabs. */
685 /* List of all symbol scope blocks for this symtab. */
687 struct blockvector *blockvector;
689 /* Table mapping core addresses to line numbers for this file.
690 Can be NULL if none. */
692 struct linetable *linetable;
694 /* Section in objfile->section_offsets for the blockvector and
697 int block_line_section;
699 /* If several symtabs share a blockvector, exactly one of them
700 should be designed the primary, so that the blockvector
701 is relocated exactly once by objfile_relocate. */
705 /* Name of this source file. */
709 /* Directory in which it was compiled, or NULL if we don't know. */
713 /* This component says how to free the data we point to:
714 free_contents => do a tree walk and free each object.
715 free_nothing => do nothing; some other symtab will free
716 the data this one uses.
717 free_linetable => free just the linetable. */
721 free_nothing, free_contents, free_linetable
725 /* Pointer to one block of storage to be freed, if nonzero. */
726 /* This is IN ADDITION to the action indicated by free_code. */
730 /* Total number of lines found in source file. */
734 /* Array mapping line number to character position. */
738 /* Language of this source file. */
740 enum language language;
742 /* String of version information. May be zero. */
746 /* Full name of file as found by searching the source path.
747 NULL if not yet known. */
751 /* Object file from which this symbol information was read. */
753 struct objfile *objfile;
755 /* Anything extra for this symtab. This is for target machines
756 with special debugging info of some sort (which cannot just
757 be represented in a normal symtab). */
759 #if defined (EXTRA_SYMTAB_INFO)
765 #define BLOCKVECTOR(symtab) (symtab)->blockvector
766 #define LINETABLE(symtab) (symtab)->linetable
769 /* Each source file that has not been fully read in is represented by
770 a partial_symtab. This contains the information on where in the
771 executable the debugging symbols for a specific file are, and a
772 list of names of global symbols which are located in this file.
773 They are all chained on partial symtab lists.
775 Even after the source file has been read into a symtab, the
776 partial_symtab remains around. They are allocated on an obstack,
777 psymbol_obstack. FIXME, this is bad for dynamic linking or VxWorks-
778 style execution of a bunch of .o's. */
780 struct partial_symtab
783 /* Chain of all existing partial symtabs. */
785 struct partial_symtab *next;
787 /* Name of the source file which this partial_symtab defines */
791 /* Information about the object file from which symbols should be read. */
793 struct objfile *objfile;
795 /* Set of relocation offsets to apply to each section. */
797 struct section_offsets *section_offsets;
799 /* Range of text addresses covered by this file; texthigh is the
800 beginning of the next section. */
805 /* Array of pointers to all of the partial_symtab's which this one
806 depends on. Since this array can only be set to previous or
807 the current (?) psymtab, this dependency tree is guaranteed not
808 to have any loops. */
810 struct partial_symtab **dependencies;
812 int number_of_dependencies;
814 /* Global symbol list. This list will be sorted after readin to
815 improve access. Binary search will be the usual method of
816 finding a symbol within it. globals_offset is an integer offset
817 within global_psymbols[]. */
822 /* Static symbol list. This list will *not* be sorted after readin;
823 to find a symbol in it, exhaustive search must be used. This is
824 reasonable because searches through this list will eventually
825 lead to either the read in of a files symbols for real (assumed
826 to take a *lot* of time; check) or an error (and we don't care
827 how long errors take). This is an offset and size within
828 static_psymbols[]. */
833 /* Pointer to symtab eventually allocated for this source file, 0 if
834 !readin or if we haven't looked for the symtab after it was readin. */
836 struct symtab *symtab;
838 /* Pointer to function which will read in the symtab corresponding to
841 void (*read_symtab) PARAMS ((struct partial_symtab *));
843 /* Information that lets read_symtab() locate the part of the symbol table
844 that this psymtab corresponds to. This information is private to the
845 format-dependent symbol reading routines. For further detail examine
846 the various symbol reading modules. Should really be (void *) but is
847 (char *) as with other such gdb variables. (FIXME) */
849 char *read_symtab_private;
851 /* Non-zero if the symtab corresponding to this psymtab has been readin */
853 unsigned char readin;
856 /* A fast way to get from a psymtab to its symtab (after the first time). */
857 #define PSYMTAB_TO_SYMTAB(pst) \
858 ((pst) -> symtab != NULL ? (pst) -> symtab : psymtab_to_symtab (pst))
861 /* The virtual function table is now an array of structures which have the
862 form { int16 offset, delta; void *pfn; }.
864 In normal virtual function tables, OFFSET is unused.
865 DELTA is the amount which is added to the apparent object's base
866 address in order to point to the actual object to which the
867 virtual function should be applied.
868 PFN is a pointer to the virtual function. */
870 #define VTBL_FNADDR_OFFSET 2
872 /* Macro that yields non-zero value iff NAME is the prefix for C++ operator
873 names. If you leave out the parenthesis here you will lose!
874 Currently 'o' 'p' CPLUS_MARKER is used for both the symbol in the
875 symbol-file and the names in gdb's symbol table. */
877 #define OPNAME_PREFIX_P(NAME) \
878 ((NAME)[0] == 'o' && (NAME)[1] == 'p' && (NAME)[2] == CPLUS_MARKER)
880 /* Macro that yields non-zero value iff NAME is the prefix for C++ vtbl
883 #define VTBL_PREFIX_P(NAME) \
884 ((NAME)[3] == CPLUS_MARKER && !strncmp ((NAME), "_vt", 3))
886 /* Macro that yields non-zero value iff NAME is the prefix for C++ destructor
889 #define DESTRUCTOR_PREFIX_P(NAME) \
890 ((NAME)[0] == '_' && (NAME)[1] == CPLUS_MARKER && (NAME)[2] == '_')
893 /* External variables and functions for the objects described above. */
895 /* This symtab variable specifies the current file for printing source lines */
897 extern struct symtab *current_source_symtab;
899 /* This is the next line to print for listing source lines. */
901 extern int current_source_line;
903 /* See the comment in symfile.c about how current_objfile is used. */
905 extern struct objfile *current_objfile;
907 extern struct symtab *
908 lookup_symtab PARAMS ((char *));
910 extern struct symbol *
911 lookup_symbol PARAMS ((const char *, const struct block *,
912 const enum namespace, int *, struct symtab **));
914 extern struct symbol *
915 lookup_block_symbol PARAMS ((const struct block *, const char *,
916 const enum namespace));
919 lookup_struct PARAMS ((char *, struct block *));
922 lookup_union PARAMS ((char *, struct block *));
925 lookup_enum PARAMS ((char *, struct block *));
927 extern struct symbol *
928 block_function PARAMS ((struct block *));
930 extern struct symbol *
931 find_pc_function PARAMS ((CORE_ADDR));
934 find_pc_partial_function PARAMS ((CORE_ADDR, char **, CORE_ADDR *));
937 clear_pc_function_cache PARAMS ((void));
939 extern struct partial_symtab *
940 lookup_partial_symtab PARAMS ((char *));
942 extern struct partial_symtab *
943 find_pc_psymtab PARAMS ((CORE_ADDR));
945 extern struct symtab *
946 find_pc_symtab PARAMS ((CORE_ADDR));
948 extern struct partial_symbol *
949 find_pc_psymbol PARAMS ((struct partial_symtab *, CORE_ADDR));
952 find_pc_line_pc_range PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *));
955 contained_in PARAMS ((struct block *, struct block *));
958 reread_symbols PARAMS ((void));
960 /* Functions for dealing with the minimal symbol table, really a misc
961 address<->symbol mapping for things we don't have debug symbols for. */
964 prim_record_minimal_symbol PARAMS ((const char *, CORE_ADDR,
965 enum minimal_symbol_type));
968 prim_record_minimal_symbol_and_info PARAMS ((const char *, CORE_ADDR,
969 enum minimal_symbol_type,
970 char *info, int section));
972 extern struct minimal_symbol *
973 lookup_minimal_symbol PARAMS ((const char *, struct objfile *));
975 extern struct minimal_symbol *
976 lookup_minimal_symbol_by_pc PARAMS ((CORE_ADDR));
979 init_minimal_symbol_collection PARAMS ((void));
982 discard_minimal_symbols PARAMS ((int));
985 install_minimal_symbols PARAMS ((struct objfile *));
987 struct symtab_and_line
989 struct symtab *symtab;
995 struct symtabs_and_lines
997 struct symtab_and_line *sals;
1001 /* Given a pc value, return line number it is in. Second arg nonzero means
1002 if pc is on the boundary use the previous statement's line number. */
1004 extern struct symtab_and_line
1005 find_pc_line PARAMS ((CORE_ADDR, int));
1007 /* Given a symtab and line number, return the pc there. */
1010 find_line_pc PARAMS ((struct symtab *, int));
1013 find_line_pc_range PARAMS ((struct symtab *, int, CORE_ADDR *, CORE_ADDR *));
1016 resolve_sal_pc PARAMS ((struct symtab_and_line *));
1018 /* Given a string, return the line specified by it. For commands like "list"
1019 and "breakpoint". */
1021 extern struct symtabs_and_lines
1022 decode_line_spec PARAMS ((char *, int));
1024 extern struct symtabs_and_lines
1025 decode_line_spec_1 PARAMS ((char *, int));
1027 extern struct symtabs_and_lines
1028 decode_line_1 PARAMS ((char **, int, struct symtab *, int));
1032 #if MAINTENANCE_CMDS
1035 maintenance_print_symbols PARAMS ((char *, int));
1038 maintenance_print_psymbols PARAMS ((char *, int));
1041 maintenance_print_msymbols PARAMS ((char *, int));
1044 maintenance_print_objfiles PARAMS ((char *, int));
1049 free_symtab PARAMS ((struct symtab *));
1051 /* Symbol-reading stuff in symfile.c and solib.c. */
1053 extern struct symtab *
1054 psymtab_to_symtab PARAMS ((struct partial_symtab *));
1057 clear_solib PARAMS ((void));
1059 extern struct objfile *
1060 symbol_file_add PARAMS ((char *, int, CORE_ADDR, int, int, int));
1065 identify_source_line PARAMS ((struct symtab *, int, int));
1068 print_source_lines PARAMS ((struct symtab *, int, int, int));
1071 forget_cached_source_info PARAMS ((void));
1074 select_source_symtab PARAMS ((struct symtab *));
1077 make_symbol_completion_list PARAMS ((char *));
1082 clear_symtab_users_once PARAMS ((void));
1084 extern struct partial_symtab *
1085 find_main_psymtab PARAMS ((void));
1089 extern struct blockvector *
1090 blockvector_for_pc PARAMS ((CORE_ADDR, int *));
1094 extern enum language
1095 deduce_language_from_filename PARAMS ((char *));
1097 #endif /* !defined(SYMTAB_H) */