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,
19 Boston, MA 02111-1307, USA. */
21 #if !defined (BUILDSYM_H)
24 /* This module provides definitions used for creating and adding to
25 the symbol table. These routines are called from various symbol-
26 file-reading routines.
28 They originated in dbxread.c of gdb-4.2, and were split out to
29 make xcoffread.c more maintainable by sharing code.
31 Variables declared in this file can be defined by #define-ing the
32 name EXTERN to null. It is used to declare variables that are
33 normally extern, but which get defined in a single module using
40 #define HASHSIZE 127 /* Size of things hashed via
43 /* Name of source file whose symbol data we are now processing. This
44 comes from a symbol of type N_SO. */
46 EXTERN
char *last_source_file
;
48 /* Core address of start of text of current source file. This too
49 comes from the N_SO symbol. */
51 EXTERN CORE_ADDR last_source_start_addr
;
53 /* The list of sub-source-files within the current individual
54 compilation. Each file gets its own symtab with its own linetable
55 and associated info, but they all share one blockvector. */
62 struct linetable
*line_vector
;
63 int line_vector_length
;
64 enum language language
;
68 EXTERN
struct subfile
*subfiles
;
70 EXTERN
struct subfile
*current_subfile
;
72 /* Global variable which, when set, indicates that we are processing a
73 .o file compiled with gcc */
75 EXTERN
unsigned char processing_gcc_compilation
;
77 /* When set, we are processing a .o file compiled by sun acc. This is
78 misnamed; it refers to all stabs-in-elf implementations which use
79 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
80 stabs-in-elf implementations ever invented will choose to be
83 EXTERN
unsigned char processing_acc_compilation
;
85 /* elz: added this flag to know when a block is compiled with HP
86 compilers (cc, aCC). This is necessary because of the macro
87 COERCE_FLOAT_TO_DOUBLE defined in tm_hppa.h, which causes a
88 coercion of float to double to always occur in parameter passing
89 for a function called by gdb (see the function value_arg_coerce in
90 valops.c). This is necessary only if the target was compiled with
91 gcc, not with HP compilers or with g++ */
93 EXTERN
unsigned char processing_hp_compilation
;
95 /* Count symbols as they are processed, for error messages. */
97 EXTERN
unsigned int symnum
;
99 /* Record the symbols defined for each context in a list. We don't
100 create a struct block for the context until we know how long to
103 #define PENDINGSIZE 100
107 struct pending
*next
;
109 struct symbol
*symbol
[PENDINGSIZE
];
112 /* Here are the three lists that symbols are put on. */
114 /* static at top level, and types */
116 EXTERN
struct pending
*file_symbols
;
118 /* global functions and variables */
120 EXTERN
struct pending
*global_symbols
;
122 /* everything local to lexical context */
124 EXTERN
struct pending
*local_symbols
;
126 /* func params local to lexical context */
128 EXTERN
struct pending
*param_symbols
;
130 /* Stack representing unclosed lexical contexts (that will become
131 blocks, eventually). */
135 /* Outer locals at the time we entered */
137 struct pending
*locals
;
139 /* Pending func params at the time we entered */
141 struct pending
*params
;
143 /* Pointer into blocklist as of entry */
145 struct pending_block
*old_blocks
;
147 /* Name of function, if any, defining context */
151 /* PC where this context starts */
153 CORE_ADDR start_addr
;
155 /* Temp slot for exception handling. */
159 /* For error-checking matching push/pop */
165 EXTERN
struct context_stack
*context_stack
;
167 /* Index of first unused entry in context stack. */
169 EXTERN
int context_stack_depth
;
171 /* Currently allocated size of context stack. */
173 EXTERN
int context_stack_size
;
175 /* Macro "function" for popping contexts from the stack. Pushing is
176 done by a real function, push_context. This returns a pointer to a
177 struct context_stack. */
179 #define pop_context() (&context_stack[--context_stack_depth]);
181 /* Nonzero if within a function (so symbols should be local, if
182 nothing says specifically). */
184 EXTERN
int within_function
;
186 /* List of blocks already made (lexical contexts already closed).
187 This is used at the end to make the blockvector. */
191 struct pending_block
*next
;
195 /* Pointer to the head of a linked list of symbol blocks which have
196 already been finalized (lexical contexts already closed) and which
197 are just waiting to be built into a blockvector when finalizing the
198 associated symtab. */
200 EXTERN
struct pending_block
*pending_blocks
;
205 struct subfile_stack
*next
;
209 EXTERN
struct subfile_stack
*subfile_stack
;
211 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
213 /* Function to invoke get the next symbol. Return the symbol name. */
215 EXTERN
char *(*next_symbol_text_func
) (struct objfile
*);
217 /* Vector of types defined so far, indexed by their type numbers.
218 Used for both stabs and coff. (In newer sun systems, dbx uses a
219 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
220 Then these numbers must be translated through the type_translations
221 hash table to get the index into the type vector.) */
223 EXTERN
struct type
**type_vector
;
225 /* Number of elements allocated for type_vector currently. */
227 EXTERN
int type_vector_length
;
229 /* Initial size of type vector. Is realloc'd larger if needed, and
230 realloc'd down to the size actually used, when completed. */
232 #define INITIAL_TYPE_VECTOR_LENGTH 160
234 extern void add_symbol_to_list (struct symbol
*symbol
,
235 struct pending
**listhead
);
237 extern struct symbol
*find_symbol_in_list (struct pending
*list
,
238 char *name
, int length
);
240 extern void finish_block (struct symbol
*symbol
,
241 struct pending
**listhead
,
242 struct pending_block
*old_blocks
,
243 CORE_ADDR start
, CORE_ADDR end
,
244 struct objfile
*objfile
);
246 extern void really_free_pendings (int foo
);
248 extern void start_subfile (char *name
, char *dirname
);
250 extern void patch_subfile_names (struct subfile
*subfile
, char *name
);
252 extern void push_subfile (void);
254 extern char *pop_subfile (void);
256 extern struct symtab
*end_symtab (CORE_ADDR end_addr
,
257 struct objfile
*objfile
, int section
);
259 /* Defined in stabsread.c. */
261 extern void scan_file_globals (struct objfile
*objfile
);
263 extern void buildsym_new_init (void);
265 extern void buildsym_init (void);
267 extern struct context_stack
*push_context (int desc
, CORE_ADDR valu
);
269 extern void record_line (struct subfile
*subfile
, int line
, CORE_ADDR pc
);
271 extern void start_symtab (char *name
, char *dirname
, CORE_ADDR start_addr
);
273 extern int hashname (char *name
);
275 extern void free_pending_blocks (void);
277 /* FIXME: Note that this is used only in buildsym.c and dstread.c,
278 which should be fixed to not need direct access to
281 extern struct blockvector
*make_blockvector (struct objfile
*objfile
);
283 /* FIXME: Note that this is used only in buildsym.c and dstread.c,
284 which should be fixed to not need direct access to
285 record_pending_block. */
287 extern void record_pending_block (struct objfile
*objfile
,
289 struct pending_block
*opblock
);
291 extern void record_debugformat (char *format
);
293 extern void merge_symbol_lists (struct pending
**srclist
,
294 struct pending
**targetlist
);
298 #endif /* defined (BUILDSYM_H) */