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 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., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, 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
;
73 struct symtab
*symtab
;
76 EXTERN
struct subfile
*subfiles
;
78 EXTERN
struct subfile
*current_subfile
;
80 /* Global variable which, when set, indicates that we are processing a
81 .o file compiled with gcc */
83 EXTERN
unsigned char processing_gcc_compilation
;
85 /* When set, we are processing a .o file compiled by sun acc. This is
86 misnamed; it refers to all stabs-in-elf implementations which use
87 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
88 stabs-in-elf implementations ever invented will choose to be
91 EXTERN
unsigned char processing_acc_compilation
;
93 /* Count symbols as they are processed, for error messages. */
95 EXTERN
unsigned int symnum
;
97 /* Record the symbols defined for each context in a list. We don't
98 create a struct block for the context until we know how long to
101 #define PENDINGSIZE 100
105 struct pending
*next
;
107 struct symbol
*symbol
[PENDINGSIZE
];
110 /* Here are the three lists that symbols are put on. */
112 /* static at top level, and types */
114 EXTERN
struct pending
*file_symbols
;
116 /* global functions and variables */
118 EXTERN
struct pending
*global_symbols
;
120 /* everything local to lexical context */
122 EXTERN
struct pending
*local_symbols
;
124 /* func params local to lexical context */
126 EXTERN
struct pending
*param_symbols
;
128 /* Stack representing unclosed lexical contexts (that will become
129 blocks, eventually). */
133 /* Outer locals at the time we entered */
135 struct pending
*locals
;
137 /* Pending func params at the time we entered */
139 struct pending
*params
;
141 /* Pointer into blocklist as of entry */
143 struct pending_block
*old_blocks
;
145 /* Name of function, if any, defining context */
149 /* PC where this context starts */
151 CORE_ADDR start_addr
;
153 /* Temp slot for exception handling. */
157 /* For error-checking matching push/pop */
163 EXTERN
struct context_stack
*context_stack
;
165 /* Index of first unused entry in context stack. */
167 EXTERN
int context_stack_depth
;
169 /* Currently allocated size of context stack. */
171 EXTERN
int context_stack_size
;
173 /* Non-zero if the context stack is empty. */
174 #define outermost_context_p() (context_stack_depth == 0)
176 /* Nonzero if within a function (so symbols should be local, if
177 nothing says specifically). */
179 EXTERN
int within_function
;
181 /* List of blocks already made (lexical contexts already closed).
182 This is used at the end to make the blockvector. */
186 struct pending_block
*next
;
190 /* Pointer to the head of a linked list of symbol blocks which have
191 already been finalized (lexical contexts already closed) and which
192 are just waiting to be built into a blockvector when finalizing the
193 associated symtab. */
195 EXTERN
struct pending_block
*pending_blocks
;
200 struct subfile_stack
*next
;
204 EXTERN
struct subfile_stack
*subfile_stack
;
206 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
208 /* Function to invoke get the next symbol. Return the symbol name. */
210 EXTERN
char *(*next_symbol_text_func
) (struct objfile
*);
212 /* Vector of types defined so far, indexed by their type numbers.
213 Used for both stabs and coff. (In newer sun systems, dbx uses a
214 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
215 Then these numbers must be translated through the type_translations
216 hash table to get the index into the type vector.) */
218 EXTERN
struct type
**type_vector
;
220 /* Number of elements allocated for type_vector currently. */
222 EXTERN
int type_vector_length
;
224 /* Initial size of type vector. Is realloc'd larger if needed, and
225 realloc'd down to the size actually used, when completed. */
227 #define INITIAL_TYPE_VECTOR_LENGTH 160
229 extern void add_free_pendings (struct pending
*list
);
231 extern void add_symbol_to_list (struct symbol
*symbol
,
232 struct pending
**listhead
);
234 extern struct symbol
*find_symbol_in_list (struct pending
*list
,
235 char *name
, int length
);
237 extern void finish_block (struct symbol
*symbol
,
238 struct pending
**listhead
,
239 struct pending_block
*old_blocks
,
240 CORE_ADDR start
, CORE_ADDR end
,
241 struct objfile
*objfile
);
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) */