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 (PTR dummy);
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) */