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, 2002, 2003 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)
28 /* This module provides definitions used for creating and adding to
29 the symbol table. These routines are called from various symbol-
30 file-reading routines.
32 They originated in dbxread.c of gdb-4.2, and were split out to
33 make xcoffread.c more maintainable by sharing code.
35 Variables declared in this file can be defined by #define-ing the
36 name EXTERN to null. It is used to declare variables that are
37 normally extern, but which get defined in a single module using
46 #define HASHSIZE 127 /* Size of things hashed via
49 /* Name of source file whose symbol data we are now processing. This
50 comes from a symbol of type N_SO. */
52 EXTERN char *last_source_file;
54 /* Core address of start of text of current source file. This too
55 comes from the N_SO symbol. */
57 EXTERN CORE_ADDR last_source_start_addr;
59 /* The list of sub-source-files within the current individual
60 compilation. Each file gets its own symtab with its own linetable
61 and associated info, but they all share one blockvector. */
68 struct linetable *line_vector;
69 int line_vector_length;
70 enum language language;
74 EXTERN struct subfile *subfiles;
76 EXTERN struct subfile *current_subfile;
78 /* Global variable which, when set, indicates that we are processing a
79 .o file compiled with gcc */
81 EXTERN unsigned char processing_gcc_compilation;
83 /* When set, we are processing a .o file compiled by sun acc. This is
84 misnamed; it refers to all stabs-in-elf implementations which use
85 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
86 stabs-in-elf implementations ever invented will choose to be
89 EXTERN unsigned char processing_acc_compilation;
91 /* Count symbols as they are processed, for error messages. */
93 EXTERN unsigned int symnum;
95 /* Record the symbols defined for each context in a list. We don't
96 create a struct block for the context until we know how long to
99 #define PENDINGSIZE 100
103 struct pending *next;
105 struct symbol *symbol[PENDINGSIZE];
108 /* Here are the three lists that symbols are put on. */
110 /* static at top level, and types */
112 EXTERN struct pending *file_symbols;
114 /* global functions and variables */
116 EXTERN struct pending *global_symbols;
118 /* everything local to lexical context */
120 EXTERN struct pending *local_symbols;
122 /* func params local to lexical context */
124 EXTERN struct pending *param_symbols;
126 /* Stack representing unclosed lexical contexts (that will become
127 blocks, eventually). */
131 /* Outer locals at the time we entered */
133 struct pending *locals;
135 /* Pending func params at the time we entered */
137 struct pending *params;
139 /* Pointer into blocklist as of entry */
141 struct pending_block *old_blocks;
143 /* Name of function, if any, defining context */
147 /* PC where this context starts */
149 CORE_ADDR start_addr;
151 /* Temp slot for exception handling. */
155 /* For error-checking matching push/pop */
161 EXTERN struct context_stack *context_stack;
163 /* Index of first unused entry in context stack. */
165 EXTERN int context_stack_depth;
167 /* Currently allocated size of context stack. */
169 EXTERN int context_stack_size;
171 /* Non-zero if the context stack is empty. */
172 #define outermost_context_p() (context_stack_depth == 0)
174 /* Nonzero if within a function (so symbols should be local, if
175 nothing says specifically). */
177 EXTERN int within_function;
179 /* List of blocks already made (lexical contexts already closed).
180 This is used at the end to make the blockvector. */
184 struct pending_block *next;
188 /* Pointer to the head of a linked list of symbol blocks which have
189 already been finalized (lexical contexts already closed) and which
190 are just waiting to be built into a blockvector when finalizing the
191 associated symtab. */
193 EXTERN struct pending_block *pending_blocks;
198 struct subfile_stack *next;
202 EXTERN struct subfile_stack *subfile_stack;
204 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
206 /* Function to invoke get the next symbol. Return the symbol name. */
208 EXTERN char *(*next_symbol_text_func) (struct objfile *);
210 /* Vector of types defined so far, indexed by their type numbers.
211 Used for both stabs and coff. (In newer sun systems, dbx uses a
212 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
213 Then these numbers must be translated through the type_translations
214 hash table to get the index into the type vector.) */
216 EXTERN struct type **type_vector;
218 /* Number of elements allocated for type_vector currently. */
220 EXTERN int type_vector_length;
222 /* Initial size of type vector. Is realloc'd larger if needed, and
223 realloc'd down to the size actually used, when completed. */
225 #define INITIAL_TYPE_VECTOR_LENGTH 160
227 extern void add_free_pendings (struct pending *list);
229 extern void add_symbol_to_list (struct symbol *symbol,
230 struct pending **listhead);
232 extern struct symbol *find_symbol_in_list (struct pending *list,
233 char *name, int length);
235 extern void finish_block (struct symbol *symbol,
236 struct pending **listhead,
237 struct pending_block *old_blocks,
238 CORE_ADDR start, CORE_ADDR end,
239 struct objfile *objfile);
241 extern void really_free_pendings (void *dummy);
243 extern void start_subfile (char *name, char *dirname);
245 extern void patch_subfile_names (struct subfile *subfile, char *name);
247 extern void push_subfile (void);
249 extern char *pop_subfile (void);
251 extern struct symtab *end_symtab (CORE_ADDR end_addr,
252 struct objfile *objfile, int section);
254 /* Defined in stabsread.c. */
256 extern void scan_file_globals (struct objfile *objfile);
258 extern void buildsym_new_init (void);
260 extern void buildsym_init (void);
262 extern struct context_stack *push_context (int desc, CORE_ADDR valu);
264 extern struct context_stack *pop_context (void);
266 extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc);
268 extern void start_symtab (char *name, char *dirname, CORE_ADDR start_addr);
270 extern int hashname (char *name);
272 extern void free_pending_blocks (void);
274 /* FIXME: Note that this is used only in buildsym.c and dstread.c,
275 which should be fixed to not need direct access to
276 record_pending_block. */
278 extern void record_pending_block (struct objfile *objfile,
280 struct pending_block *opblock);
282 extern void record_debugformat (char *format);
284 extern void merge_symbol_lists (struct pending **srclist,
285 struct pending **targetlist);
287 /* The macro table for the compilation unit whose symbols we're
288 currently reading. All the symtabs for this CU will point to this. */
289 EXTERN struct macro_table *pending_macros;
293 #endif /* defined (BUILDSYM_H) */