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)
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
43 #define HASHSIZE 127 /* Size of things hashed via
46 /* Name of source file whose symbol data we are now processing. This
47 comes from a symbol of type N_SO. */
49 EXTERN
char *last_source_file
;
51 /* Core address of start of text of current source file. This too
52 comes from the N_SO symbol. */
54 EXTERN CORE_ADDR last_source_start_addr
;
56 /* The list of sub-source-files within the current individual
57 compilation. Each file gets its own symtab with its own linetable
58 and associated info, but they all share one blockvector. */
65 struct linetable
*line_vector
;
66 int line_vector_length
;
67 enum language language
;
71 EXTERN
struct subfile
*subfiles
;
73 EXTERN
struct subfile
*current_subfile
;
75 /* Global variable which, when set, indicates that we are processing a
76 .o file compiled with gcc */
78 EXTERN
unsigned char processing_gcc_compilation
;
80 /* When set, we are processing a .o file compiled by sun acc. This is
81 misnamed; it refers to all stabs-in-elf implementations which use
82 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
83 stabs-in-elf implementations ever invented will choose to be
86 EXTERN
unsigned char processing_acc_compilation
;
88 /* Count symbols as they are processed, for error messages. */
90 EXTERN
unsigned int symnum
;
92 /* Record the symbols defined for each context in a list. We don't
93 create a struct block for the context until we know how long to
96 #define PENDINGSIZE 100
100 struct pending
*next
;
102 struct symbol
*symbol
[PENDINGSIZE
];
105 /* Here are the three lists that symbols are put on. */
107 /* static at top level, and types */
109 EXTERN
struct pending
*file_symbols
;
111 /* global functions and variables */
113 EXTERN
struct pending
*global_symbols
;
115 /* everything local to lexical context */
117 EXTERN
struct pending
*local_symbols
;
119 /* func params local to lexical context */
121 EXTERN
struct pending
*param_symbols
;
123 /* Stack representing unclosed lexical contexts (that will become
124 blocks, eventually). */
128 /* Outer locals at the time we entered */
130 struct pending
*locals
;
132 /* Pending func params at the time we entered */
134 struct pending
*params
;
136 /* Pointer into blocklist as of entry */
138 struct pending_block
*old_blocks
;
140 /* Name of function, if any, defining context */
144 /* PC where this context starts */
146 CORE_ADDR start_addr
;
148 /* Temp slot for exception handling. */
152 /* For error-checking matching push/pop */
158 EXTERN
struct context_stack
*context_stack
;
160 /* Index of first unused entry in context stack. */
162 EXTERN
int context_stack_depth
;
164 /* Currently allocated size of context stack. */
166 EXTERN
int context_stack_size
;
168 /* Non-zero if the context stack is empty. */
169 #define outermost_context_p() (context_stack_depth == 0)
171 /* Nonzero if within a function (so symbols should be local, if
172 nothing says specifically). */
174 EXTERN
int within_function
;
176 /* List of blocks already made (lexical contexts already closed).
177 This is used at the end to make the blockvector. */
181 struct pending_block
*next
;
185 /* Pointer to the head of a linked list of symbol blocks which have
186 already been finalized (lexical contexts already closed) and which
187 are just waiting to be built into a blockvector when finalizing the
188 associated symtab. */
190 EXTERN
struct pending_block
*pending_blocks
;
195 struct subfile_stack
*next
;
199 EXTERN
struct subfile_stack
*subfile_stack
;
201 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
203 /* Function to invoke get the next symbol. Return the symbol name. */
205 EXTERN
char *(*next_symbol_text_func
) (struct objfile
*);
207 /* Vector of types defined so far, indexed by their type numbers.
208 Used for both stabs and coff. (In newer sun systems, dbx uses a
209 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
210 Then these numbers must be translated through the type_translations
211 hash table to get the index into the type vector.) */
213 EXTERN
struct type
**type_vector
;
215 /* Number of elements allocated for type_vector currently. */
217 EXTERN
int type_vector_length
;
219 /* Initial size of type vector. Is realloc'd larger if needed, and
220 realloc'd down to the size actually used, when completed. */
222 #define INITIAL_TYPE_VECTOR_LENGTH 160
224 extern void add_free_pendings (struct pending
*list
);
226 extern void add_symbol_to_list (struct symbol
*symbol
,
227 struct pending
**listhead
);
229 extern struct symbol
*find_symbol_in_list (struct pending
*list
,
230 char *name
, int length
);
232 extern void finish_block (struct symbol
*symbol
,
233 struct pending
**listhead
,
234 struct pending_block
*old_blocks
,
235 CORE_ADDR start
, CORE_ADDR end
,
236 struct objfile
*objfile
);
238 extern void really_free_pendings (void *dummy
);
240 extern void start_subfile (char *name
, char *dirname
);
242 extern void patch_subfile_names (struct subfile
*subfile
, char *name
);
244 extern void push_subfile (void);
246 extern char *pop_subfile (void);
248 extern struct symtab
*end_symtab (CORE_ADDR end_addr
,
249 struct objfile
*objfile
, int section
);
251 /* Defined in stabsread.c. */
253 extern void scan_file_globals (struct objfile
*objfile
);
255 extern void buildsym_new_init (void);
257 extern void buildsym_init (void);
259 extern struct context_stack
*push_context (int desc
, CORE_ADDR valu
);
261 extern struct context_stack
*pop_context (void);
263 extern void record_line (struct subfile
*subfile
, int line
, CORE_ADDR pc
);
265 extern void start_symtab (char *name
, char *dirname
, CORE_ADDR start_addr
);
267 extern int hashname (char *name
);
269 extern void free_pending_blocks (void);
271 /* FIXME: Note that this is used only in buildsym.c and dstread.c,
272 which should be fixed to not need direct access to
273 record_pending_block. */
275 extern void record_pending_block (struct objfile
*objfile
,
277 struct pending_block
*opblock
);
279 extern void record_debugformat (char *format
);
281 extern void merge_symbol_lists (struct pending
**srclist
,
282 struct pending
**targetlist
);
284 /* The macro table for the compilation unit whose symbols we're
285 currently reading. All the symtabs for this CU will point to this. */
286 EXTERN
struct macro_table
*pending_macros
;
290 #endif /* defined (BUILDSYM_H) */