1 /* Build symbol tables in GDB's internal format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1995, 1996,
3 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #if !defined (BUILDSYM_H)
25 /* This module provides definitions used for creating and adding to
26 the symbol table. These routines are called from various symbol-
27 file-reading routines.
29 They originated in dbxread.c of gdb-4.2, and were split out to
30 make xcoffread.c more maintainable by sharing code.
32 Variables declared in this file can be defined by #define-ing the
33 name EXTERN to null. It is used to declare variables that are
34 normally extern, but which get defined in a single module using
41 #define HASHSIZE 127 /* Size of things hashed via
44 /* Name of source file whose symbol data we are now processing. This
45 comes from a symbol of type N_SO. */
47 EXTERN char *last_source_file;
49 /* Core address of start of text of current source file. This too
50 comes from the N_SO symbol. */
52 EXTERN CORE_ADDR last_source_start_addr;
54 /* The list of sub-source-files within the current individual
55 compilation. Each file gets its own symtab with its own linetable
56 and associated info, but they all share one blockvector. */
63 struct linetable *line_vector;
64 int line_vector_length;
65 enum language language;
69 EXTERN struct subfile *subfiles;
71 EXTERN struct subfile *current_subfile;
73 /* Global variable which, when set, indicates that we are processing a
74 .o file compiled with gcc */
76 EXTERN unsigned char processing_gcc_compilation;
78 /* When set, we are processing a .o file compiled by sun acc. This is
79 misnamed; it refers to all stabs-in-elf implementations which use
80 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
81 stabs-in-elf implementations ever invented will choose to be
84 EXTERN unsigned char processing_acc_compilation;
86 /* elz: added this flag to know when a block is compiled with HP
87 compilers (cc, aCC). This is necessary because of the macro
88 COERCE_FLOAT_TO_DOUBLE defined in tm_hppa.h, which causes a
89 coercion of float to double to always occur in parameter passing
90 for a function called by gdb (see the function value_arg_coerce in
91 valops.c). This is necessary only if the target was compiled with
92 gcc, not with HP compilers or with g++ */
94 EXTERN unsigned char processing_hp_compilation;
96 /* Count symbols as they are processed, for error messages. */
98 EXTERN unsigned int symnum;
100 /* Record the symbols defined for each context in a list. We don't
101 create a struct block for the context until we know how long to
104 #define PENDINGSIZE 100
108 struct pending *next;
110 struct symbol *symbol[PENDINGSIZE];
113 /* Here are the three lists that symbols are put on. */
115 /* static at top level, and types */
117 EXTERN struct pending *file_symbols;
119 /* global functions and variables */
121 EXTERN struct pending *global_symbols;
123 /* everything local to lexical context */
125 EXTERN struct pending *local_symbols;
127 /* func params local to lexical context */
129 EXTERN struct pending *param_symbols;
131 /* Stack representing unclosed lexical contexts (that will become
132 blocks, eventually). */
136 /* Outer locals at the time we entered */
138 struct pending *locals;
140 /* Pending func params at the time we entered */
142 struct pending *params;
144 /* Pointer into blocklist as of entry */
146 struct pending_block *old_blocks;
148 /* Name of function, if any, defining context */
152 /* PC where this context starts */
154 CORE_ADDR start_addr;
156 /* Temp slot for exception handling. */
160 /* For error-checking matching push/pop */
166 EXTERN struct context_stack *context_stack;
168 /* Index of first unused entry in context stack. */
170 EXTERN int context_stack_depth;
172 /* Currently allocated size of context stack. */
174 EXTERN int context_stack_size;
176 /* Non-zero if the context stack is empty. */
177 #define outermost_context_p() (context_stack_depth == 0)
179 /* Nonzero if within a function (so symbols should be local, if
180 nothing says specifically). */
182 EXTERN int within_function;
184 /* List of blocks already made (lexical contexts already closed).
185 This is used at the end to make the blockvector. */
189 struct pending_block *next;
193 /* Pointer to the head of a linked list of symbol blocks which have
194 already been finalized (lexical contexts already closed) and which
195 are just waiting to be built into a blockvector when finalizing the
196 associated symtab. */
198 EXTERN struct pending_block *pending_blocks;
203 struct subfile_stack *next;
207 EXTERN struct subfile_stack *subfile_stack;
209 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
211 /* Function to invoke get the next symbol. Return the symbol name. */
213 EXTERN char *(*next_symbol_text_func) (struct objfile *);
215 /* Vector of types defined so far, indexed by their type numbers.
216 Used for both stabs and coff. (In newer sun systems, dbx uses a
217 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
218 Then these numbers must be translated through the type_translations
219 hash table to get the index into the type vector.) */
221 EXTERN struct type **type_vector;
223 /* Number of elements allocated for type_vector currently. */
225 EXTERN int type_vector_length;
227 /* Initial size of type vector. Is realloc'd larger if needed, and
228 realloc'd down to the size actually used, when completed. */
230 #define INITIAL_TYPE_VECTOR_LENGTH 160
232 extern void add_free_pendings (struct pending *list);
234 extern void add_symbol_to_list (struct symbol *symbol,
235 struct pending **listhead);
237 extern struct symbol *find_symbol_in_list (struct pending *list,
238 char *name, int length);
240 extern void finish_block (struct symbol *symbol,
241 struct pending **listhead,
242 struct pending_block *old_blocks,
243 CORE_ADDR start, CORE_ADDR end,
244 struct objfile *objfile);
246 extern void really_free_pendings (PTR dummy);
248 extern void start_subfile (char *name, char *dirname);
250 extern void patch_subfile_names (struct subfile *subfile, char *name);
252 extern void push_subfile (void);
254 extern char *pop_subfile (void);
256 extern struct symtab *end_symtab (CORE_ADDR end_addr,
257 struct objfile *objfile, int section);
259 /* Defined in stabsread.c. */
261 extern void scan_file_globals (struct objfile *objfile);
263 extern void buildsym_new_init (void);
265 extern void buildsym_init (void);
267 extern struct context_stack *push_context (int desc, CORE_ADDR valu);
269 extern struct context_stack *pop_context (void);
271 extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc);
273 extern void start_symtab (char *name, char *dirname, CORE_ADDR start_addr);
275 extern int hashname (char *name);
277 extern void free_pending_blocks (void);
279 /* FIXME: Note that this is used only in buildsym.c and dstread.c,
280 which should be fixed to not need direct access to
281 record_pending_block. */
283 extern void record_pending_block (struct objfile *objfile,
285 struct pending_block *opblock);
287 extern void record_debugformat (char *format);
289 extern void merge_symbol_lists (struct pending **srclist,
290 struct pending **targetlist);
292 /* The macro table for the compilation unit whose symbols we're
293 currently reading. All the symtabs for this CU will point to this. */
294 EXTERN struct macro_table *pending_macros;
298 #endif /* defined (BUILDSYM_H) */