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 /* Macro "function" for popping contexts from the stack. Pushing is
177 done by a real function, push_context. This returns a pointer to a
178 struct context_stack. */
180 #define pop_context() (&context_stack[--context_stack_depth]);
182 /* Nonzero if within a function (so symbols should be local, if
183 nothing says specifically). */
185 EXTERN
int within_function
;
187 /* List of blocks already made (lexical contexts already closed).
188 This is used at the end to make the blockvector. */
192 struct pending_block
*next
;
196 /* Pointer to the head of a linked list of symbol blocks which have
197 already been finalized (lexical contexts already closed) and which
198 are just waiting to be built into a blockvector when finalizing the
199 associated symtab. */
201 EXTERN
struct pending_block
*pending_blocks
;
206 struct subfile_stack
*next
;
210 EXTERN
struct subfile_stack
*subfile_stack
;
212 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
214 /* Function to invoke get the next symbol. Return the symbol name. */
216 EXTERN
char *(*next_symbol_text_func
) (struct objfile
*);
218 /* Vector of types defined so far, indexed by their type numbers.
219 Used for both stabs and coff. (In newer sun systems, dbx uses a
220 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
221 Then these numbers must be translated through the type_translations
222 hash table to get the index into the type vector.) */
224 EXTERN
struct type
**type_vector
;
226 /* Number of elements allocated for type_vector currently. */
228 EXTERN
int type_vector_length
;
230 /* Initial size of type vector. Is realloc'd larger if needed, and
231 realloc'd down to the size actually used, when completed. */
233 #define INITIAL_TYPE_VECTOR_LENGTH 160
235 extern void add_free_pendings (struct pending
*list
);
237 extern void add_symbol_to_list (struct symbol
*symbol
,
238 struct pending
**listhead
);
240 extern struct symbol
*find_symbol_in_list (struct pending
*list
,
241 char *name
, int length
);
243 extern void finish_block (struct symbol
*symbol
,
244 struct pending
**listhead
,
245 struct pending_block
*old_blocks
,
246 CORE_ADDR start
, CORE_ADDR end
,
247 struct objfile
*objfile
);
249 extern void really_free_pendings (PTR dummy
);
251 extern void start_subfile (char *name
, char *dirname
);
253 extern void patch_subfile_names (struct subfile
*subfile
, char *name
);
255 extern void push_subfile (void);
257 extern char *pop_subfile (void);
259 extern struct symtab
*end_symtab (CORE_ADDR end_addr
,
260 struct objfile
*objfile
, int section
);
262 /* Defined in stabsread.c. */
264 extern void scan_file_globals (struct objfile
*objfile
);
266 extern void buildsym_new_init (void);
268 extern void buildsym_init (void);
270 extern struct context_stack
*push_context (int desc
, CORE_ADDR valu
);
272 extern void record_line (struct subfile
*subfile
, int line
, CORE_ADDR pc
);
274 extern void start_symtab (char *name
, char *dirname
, CORE_ADDR start_addr
);
276 extern int hashname (char *name
);
278 extern void free_pending_blocks (void);
280 /* FIXME: Note that this is used only in buildsym.c and dstread.c,
281 which should be fixed to not need direct access to
284 extern struct blockvector
*make_blockvector (struct objfile
*objfile
);
286 /* FIXME: Note that this is used only in buildsym.c and dstread.c,
287 which should be fixed to not need direct access to
288 record_pending_block. */
290 extern void record_pending_block (struct objfile
*objfile
,
292 struct pending_block
*opblock
);
294 extern void record_debugformat (char *format
);
296 extern void merge_symbol_lists (struct pending
**srclist
,
297 struct pending
**targetlist
);
301 #endif /* defined (BUILDSYM_H) */