1 /* Build symbol tables in GDB's internal format.
2 Copyright 1986-1993, 1996-1999 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 #if !defined (BUILDSYM_H)
23 /* This module provides definitions used for creating and adding to
24 the symbol table. These routines are called from various symbol-
25 file-reading routines.
27 They originated in dbxread.c of gdb-4.2, and were split out to
28 make xcoffread.c more maintainable by sharing code.
30 Variables declared in this file can be defined by #define-ing the
31 name EXTERN to null. It is used to declare variables that are
32 normally extern, but which get defined in a single module using
39 #define HASHSIZE 127 /* Size of things hashed via
42 /* Name of source file whose symbol data we are now processing. This
43 comes from a symbol of type N_SO. */
45 EXTERN
char *last_source_file
;
47 /* Core address of start of text of current source file. This too
48 comes from the N_SO symbol. */
50 EXTERN CORE_ADDR last_source_start_addr
;
52 /* The list of sub-source-files within the current individual
53 compilation. Each file gets its own symtab with its own linetable
54 and associated info, but they all share one blockvector. */
61 struct linetable
*line_vector
;
62 int line_vector_length
;
63 enum language language
;
67 EXTERN
struct subfile
*subfiles
;
69 EXTERN
struct subfile
*current_subfile
;
71 /* Global variable which, when set, indicates that we are processing a
72 .o file compiled with gcc */
74 EXTERN
unsigned char processing_gcc_compilation
;
76 /* When set, we are processing a .o file compiled by sun acc. This is
77 misnamed; it refers to all stabs-in-elf implementations which use
78 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
79 stabs-in-elf implementations ever invented will choose to be
82 EXTERN
unsigned char processing_acc_compilation
;
84 /* elz: added this flag to know when a block is compiled with HP
85 compilers (cc, aCC). This is necessary because of the macro
86 COERCE_FLOAT_TO_DOUBLE defined in tm_hppa.h, which causes a
87 coercion of float to double to always occur in parameter passing
88 for a function called by gdb (see the function value_arg_coerce in
89 valops.c). This is necessary only if the target was compiled with
90 gcc, not with HP compilers or with g++ */
92 EXTERN
unsigned char processing_hp_compilation
;
94 /* Count symbols as they are processed, for error messages. */
96 EXTERN
unsigned int symnum
;
98 /* Record the symbols defined for each context in a list. We don't
99 create a struct block for the context until we know how long to
102 #define PENDINGSIZE 100
106 struct pending
*next
;
108 struct symbol
*symbol
[PENDINGSIZE
];
111 /* Here are the three lists that symbols are put on. */
113 /* static at top level, and types */
115 EXTERN
struct pending
*file_symbols
;
117 /* global functions and variables */
119 EXTERN
struct pending
*global_symbols
;
121 /* everything local to lexical context */
123 EXTERN
struct pending
*local_symbols
;
125 /* func params local to lexical context */
127 EXTERN
struct pending
*param_symbols
;
129 /* Stack representing unclosed lexical contexts (that will become
130 blocks, eventually). */
134 /* Outer locals at the time we entered */
136 struct pending
*locals
;
138 /* Pending func params at the time we entered */
140 struct pending
*params
;
142 /* Pointer into blocklist as of entry */
144 struct pending_block
*old_blocks
;
146 /* Name of function, if any, defining context */
150 /* PC where this context starts */
152 CORE_ADDR start_addr
;
154 /* Temp slot for exception handling. */
158 /* For error-checking matching push/pop */
164 EXTERN
struct context_stack
*context_stack
;
166 /* Index of first unused entry in context stack. */
168 EXTERN
int context_stack_depth
;
170 /* Currently allocated size of context stack. */
172 EXTERN
int context_stack_size
;
174 /* Macro "function" for popping contexts from the stack. Pushing is
175 done by a real function, push_context. This returns a pointer to a
176 struct context_stack. */
178 #define pop_context() (&context_stack[--context_stack_depth]);
180 /* Nonzero if within a function (so symbols should be local, if
181 nothing says specifically). */
183 EXTERN
int within_function
;
185 /* List of blocks already made (lexical contexts already closed).
186 This is used at the end to make the blockvector. */
190 struct pending_block
*next
;
194 /* Pointer to the head of a linked list of symbol blocks which have
195 already been finalized (lexical contexts already closed) and which
196 are just waiting to be built into a blockvector when finalizing the
197 associated symtab. */
199 EXTERN
struct pending_block
*pending_blocks
;
204 struct subfile_stack
*next
;
208 EXTERN
struct subfile_stack
*subfile_stack
;
210 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
212 /* Function to invoke get the next symbol. Return the symbol name. */
214 EXTERN
char *(*next_symbol_text_func
) (struct objfile
*);
216 /* Vector of types defined so far, indexed by their type numbers.
217 Used for both stabs and coff. (In newer sun systems, dbx uses a
218 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
219 Then these numbers must be translated through the type_translations
220 hash table to get the index into the type vector.) */
222 EXTERN
struct type
**type_vector
;
224 /* Number of elements allocated for type_vector currently. */
226 EXTERN
int type_vector_length
;
228 /* Initial size of type vector. Is realloc'd larger if needed, and
229 realloc'd down to the size actually used, when completed. */
231 #define INITIAL_TYPE_VECTOR_LENGTH 160
233 extern void add_symbol_to_list (struct symbol
*symbol
,
234 struct pending
**listhead
);
236 extern struct symbol
*find_symbol_in_list (struct pending
*list
,
237 char *name
, int length
);
239 extern void finish_block (struct symbol
*symbol
,
240 struct pending
**listhead
,
241 struct pending_block
*old_blocks
,
242 CORE_ADDR start
, CORE_ADDR end
,
243 struct objfile
*objfile
);
245 extern void really_free_pendings (int foo
);
247 extern void start_subfile (char *name
, char *dirname
);
249 extern void patch_subfile_names (struct subfile
*subfile
, char *name
);
251 extern void push_subfile (void);
253 extern char *pop_subfile (void);
255 extern struct symtab
*end_symtab (CORE_ADDR end_addr
,
256 struct objfile
*objfile
, int section
);
258 /* Defined in stabsread.c. */
260 extern void scan_file_globals (struct objfile
*objfile
);
262 extern void buildsym_new_init (void);
264 extern void buildsym_init (void);
266 extern struct context_stack
*push_context (int desc
, CORE_ADDR valu
);
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
280 extern struct blockvector
*make_blockvector (struct objfile
*objfile
);
282 /* FIXME: Note that this is used only in buildsym.c and dstread.c,
283 which should be fixed to not need direct access to
284 record_pending_block. */
286 extern void record_pending_block (struct objfile
*objfile
,
288 struct pending_block
*opblock
);
290 extern void record_debugformat (char *format
);
292 extern void merge_symbol_lists (struct pending
**srclist
,
293 struct pending
**targetlist
);
297 #endif /* defined (BUILDSYM_H) */