1 /* Build symbol tables in GDB's internal format.
2 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1995, 1996,
3 1997, 1998, 1999, 2000, 2002, 2003, 2007 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 3 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, see <http://www.gnu.org/licenses/>. */
20 #if !defined (BUILDSYM_H)
27 /* This module provides definitions used for creating and adding to
28 the symbol table. These routines are called from various symbol-
29 file-reading routines.
31 They originated in dbxread.c of gdb-4.2, and were split out to
32 make xcoffread.c more maintainable by sharing code.
34 Variables declared in this file can be defined by #define-ing the
35 name EXTERN to null. It is used to declare variables that are
36 normally extern, but which get defined in a single module using
45 #define HASHSIZE 127 /* Size of things hashed via
48 /* Name of source file whose symbol data we are now processing. This
49 comes from a symbol of type N_SO. */
51 EXTERN
char *last_source_file
;
53 /* Core address of start of text of current source file. This too
54 comes from the N_SO symbol. */
56 EXTERN CORE_ADDR last_source_start_addr
;
58 /* The list of sub-source-files within the current individual
59 compilation. Each file gets its own symtab with its own linetable
60 and associated info, but they all share one blockvector. */
67 struct linetable
*line_vector
;
68 int line_vector_length
;
69 enum language language
;
72 struct symtab
*symtab
;
75 EXTERN
struct subfile
*current_subfile
;
77 /* Global variable which, when set, indicates that we are processing a
78 .o file compiled with gcc */
80 EXTERN
unsigned char processing_gcc_compilation
;
82 /* When set, we are processing a .o file compiled by sun acc. This is
83 misnamed; it refers to all stabs-in-elf implementations which use
84 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
85 stabs-in-elf implementations ever invented will choose to be
88 EXTERN
unsigned char processing_acc_compilation
;
90 /* Count symbols as they are processed, for error messages. */
92 EXTERN
unsigned int symnum
;
94 /* Record the symbols defined for each context in a list. We don't
95 create a struct block for the context until we know how long to
98 #define PENDINGSIZE 100
102 struct pending
*next
;
104 struct symbol
*symbol
[PENDINGSIZE
];
107 /* Here are the three lists that symbols are put on. */
109 /* static at top level, and types */
111 EXTERN
struct pending
*file_symbols
;
113 /* global functions and variables */
115 EXTERN
struct pending
*global_symbols
;
117 /* everything local to lexical context */
119 EXTERN
struct pending
*local_symbols
;
121 /* func params local to lexical context */
123 EXTERN
struct pending
*param_symbols
;
125 /* Stack representing unclosed lexical contexts (that will become
126 blocks, eventually). */
130 /* Outer locals at the time we entered */
132 struct pending
*locals
;
134 /* Pending func params at the time we entered */
136 struct pending
*params
;
138 /* Pointer into blocklist as of entry */
140 struct pending_block
*old_blocks
;
142 /* Name of function, if any, defining context */
146 /* PC where this context starts */
148 CORE_ADDR start_addr
;
150 /* Temp slot for exception handling. */
154 /* For error-checking matching push/pop */
160 EXTERN
struct context_stack
*context_stack
;
162 /* Index of first unused entry in context stack. */
164 EXTERN
int context_stack_depth
;
166 /* Currently allocated size of context stack. */
168 EXTERN
int context_stack_size
;
170 /* Non-zero if the context stack is empty. */
171 #define outermost_context_p() (context_stack_depth == 0)
173 /* Nonzero if within a function (so symbols should be local, if
174 nothing says specifically). */
176 EXTERN
int within_function
;
178 /* List of blocks already made (lexical contexts already closed).
179 This is used at the end to make the blockvector. */
183 struct pending_block
*next
;
187 /* Pointer to the head of a linked list of symbol blocks which have
188 already been finalized (lexical contexts already closed) and which
189 are just waiting to be built into a blockvector when finalizing the
190 associated symtab. */
192 EXTERN
struct pending_block
*pending_blocks
;
197 struct subfile_stack
*next
;
201 EXTERN
struct subfile_stack
*subfile_stack
;
203 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
205 /* Function to invoke get the next symbol. Return the symbol name. */
207 EXTERN
char *(*next_symbol_text_func
) (struct objfile
*);
209 /* Vector of types defined so far, indexed by their type numbers.
210 Used for both stabs and coff. (In newer sun systems, dbx uses a
211 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
212 Then these numbers must be translated through the type_translations
213 hash table to get the index into the type vector.) */
215 EXTERN
struct type
**type_vector
;
217 /* Number of elements allocated for type_vector currently. */
219 EXTERN
int type_vector_length
;
221 /* Initial size of type vector. Is realloc'd larger if needed, and
222 realloc'd down to the size actually used, when completed. */
224 #define INITIAL_TYPE_VECTOR_LENGTH 160
226 extern void add_free_pendings (struct pending
*list
);
228 extern void add_symbol_to_list (struct symbol
*symbol
,
229 struct pending
**listhead
);
231 extern struct symbol
*find_symbol_in_list (struct pending
*list
,
232 char *name
, int length
);
234 extern struct block
*finish_block (struct symbol
*symbol
,
235 struct pending
**listhead
,
236 struct pending_block
*old_blocks
,
237 CORE_ADDR start
, CORE_ADDR end
,
238 struct objfile
*objfile
);
240 extern void record_block_range (struct block
*,
241 CORE_ADDR start
, CORE_ADDR end_inclusive
);
243 extern void really_free_pendings (void *dummy
);
245 extern void start_subfile (char *name
, char *dirname
);
247 extern void patch_subfile_names (struct subfile
*subfile
, char *name
);
249 extern void push_subfile (void);
251 extern char *pop_subfile (void);
253 extern struct symtab
*end_symtab (CORE_ADDR end_addr
,
254 struct objfile
*objfile
, int section
);
256 /* Defined in stabsread.c. */
258 extern void scan_file_globals (struct objfile
*objfile
);
260 extern void buildsym_new_init (void);
262 extern void buildsym_init (void);
264 extern struct context_stack
*push_context (int desc
, CORE_ADDR valu
);
266 extern struct context_stack
*pop_context (void);
268 extern void record_line (struct subfile
*subfile
, int line
, CORE_ADDR pc
);
270 extern void start_symtab (char *name
, char *dirname
, CORE_ADDR start_addr
);
272 extern int hashname (char *name
);
274 extern void free_pending_blocks (void);
276 /* FIXME: Note that this is used only in buildsym.c and dstread.c,
277 which should be fixed to not need direct access to
278 record_pending_block. */
280 extern void record_pending_block (struct objfile
*objfile
,
282 struct pending_block
*opblock
);
284 extern void record_debugformat (char *format
);
286 extern void record_producer (const char *producer
);
288 extern void merge_symbol_lists (struct pending
**srclist
,
289 struct pending
**targetlist
);
291 /* The macro table for the compilation unit whose symbols we're
292 currently reading. All the symtabs for this CU will point to this. */
293 EXTERN
struct macro_table
*pending_macros
;
297 #endif /* defined (BUILDSYM_H) */