1 /* Build symbol tables in GDB's internal format.
2 Copyright (C) 1986-1993, 1995-2000, 2002-2003, 2007-2012 Free
3 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 3 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, see <http://www.gnu.org/licenses/>. */
20 #if !defined (BUILDSYM_H)
27 /* This module provides definitions used for creating and adding to
28 the symbol table. These routines are called from various symbol-
29 file-reading routines.
31 They originated in dbxread.c of gdb-4.2, and were split out to
32 make xcoffread.c more maintainable by sharing code.
34 Variables declared in this file can be defined by #define-ing the
35 name EXTERN to null. It is used to declare variables that are
36 normally extern, but which get defined in a single module using
46 #define HASHSIZE 127 /* Size of things hashed via
49 /* Name of source file whose symbol data we are now processing. This
50 comes from a symbol of type N_SO for stabs. For Dwarf it comes
51 from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */
53 EXTERN
char *last_source_file
;
55 /* Core address of start of text of current source file. This too
56 comes from the N_SO symbol. For Dwarf it typically comes from the
57 DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */
59 EXTERN CORE_ADDR last_source_start_addr
;
61 /* The list of sub-source-files within the current individual
62 compilation. Each file gets its own symtab with its own linetable
63 and associated info, but they all share one blockvector. */
70 struct linetable
*line_vector
;
71 int line_vector_length
;
72 enum language language
;
74 const char *debugformat
;
75 struct symtab
*symtab
;
78 EXTERN
struct subfile
*current_subfile
;
80 /* Global variable which, when set, indicates that we are processing a
81 .o file compiled with gcc */
83 EXTERN
unsigned char processing_gcc_compilation
;
85 /* When set, we are processing a .o file compiled by sun acc. This is
86 misnamed; it refers to all stabs-in-elf implementations which use
87 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
88 stabs-in-elf implementations ever invented will choose to be
91 EXTERN
unsigned char processing_acc_compilation
;
93 /* Count symbols as they are processed, for error messages. */
95 EXTERN
unsigned int symnum
;
97 /* Record the symbols defined for each context in a list. We don't
98 create a struct block for the context until we know how long to
101 #define PENDINGSIZE 100
105 struct pending
*next
;
107 struct symbol
*symbol
[PENDINGSIZE
];
110 /* Here are the three lists that symbols are put on. */
112 /* static at top level, and types */
114 EXTERN
struct pending
*file_symbols
;
116 /* global functions and variables */
118 EXTERN
struct pending
*global_symbols
;
120 /* everything local to lexical context */
122 EXTERN
struct pending
*local_symbols
;
124 /* "using" directives local to lexical context. */
126 EXTERN
struct using_direct
*using_directives
;
128 /* Stack representing unclosed lexical contexts (that will become
129 blocks, eventually). */
133 /* Outer locals at the time we entered */
135 struct pending
*locals
;
137 /* Pending using directives at the time we entered. */
139 struct using_direct
*using_directives
;
141 /* Pointer into blocklist as of entry */
143 struct pending_block
*old_blocks
;
145 /* Name of function, if any, defining context */
149 /* PC where this context starts */
151 CORE_ADDR start_addr
;
153 /* Temp slot for exception handling. */
157 /* For error-checking matching push/pop */
163 EXTERN
struct context_stack
*context_stack
;
165 /* Index of first unused entry in context stack. */
167 EXTERN
int context_stack_depth
;
169 /* Currently allocated size of context stack. */
171 EXTERN
int context_stack_size
;
173 /* Non-zero if the context stack is empty. */
174 #define outermost_context_p() (context_stack_depth == 0)
176 /* Nonzero if within a function (so symbols should be local, if
177 nothing says specifically). */
179 EXTERN
int within_function
;
185 struct subfile_stack
*next
;
189 EXTERN
struct subfile_stack
*subfile_stack
;
191 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
193 /* Function to invoke get the next symbol. Return the symbol name. */
195 EXTERN
char *(*next_symbol_text_func
) (struct objfile
*);
197 /* Vector of types defined so far, indexed by their type numbers.
198 Used for both stabs and coff. (In newer sun systems, dbx uses a
199 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
200 Then these numbers must be translated through the type_translations
201 hash table to get the index into the type vector.) */
203 EXTERN
struct type
**type_vector
;
205 /* Number of elements allocated for type_vector currently. */
207 EXTERN
int type_vector_length
;
209 /* Initial size of type vector. Is realloc'd larger if needed, and
210 realloc'd down to the size actually used, when completed. */
212 #define INITIAL_TYPE_VECTOR_LENGTH 160
214 extern void add_symbol_to_list (struct symbol
*symbol
,
215 struct pending
**listhead
);
217 extern struct symbol
*find_symbol_in_list (struct pending
*list
,
218 char *name
, int length
);
220 extern struct block
*finish_block (struct symbol
*symbol
,
221 struct pending
**listhead
,
222 struct pending_block
*old_blocks
,
223 CORE_ADDR start
, CORE_ADDR end
,
224 struct objfile
*objfile
);
226 extern void record_block_range (struct block
*,
227 CORE_ADDR start
, CORE_ADDR end_inclusive
);
229 extern void really_free_pendings (void *dummy
);
231 extern void start_subfile (const char *name
, const char *dirname
);
233 extern void patch_subfile_names (struct subfile
*subfile
, char *name
);
235 extern void push_subfile (void);
237 extern char *pop_subfile (void);
239 extern struct block
*end_symtab_get_static_block (CORE_ADDR end_addr
,
240 struct objfile
*objfile
,
244 extern struct symtab
*end_symtab_from_static_block (struct block
*static_block
,
245 struct objfile
*objfile
,
249 extern struct symtab
*end_symtab (CORE_ADDR end_addr
,
250 struct objfile
*objfile
, int section
);
252 extern struct symtab
*end_expandable_symtab (CORE_ADDR end_addr
,
253 struct objfile
*objfile
,
256 extern void augment_type_symtab (struct objfile
*objfile
,
257 struct symtab
*primary_symtab
);
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 struct context_stack
*pop_context (void);
271 extern void record_line (struct subfile
*subfile
, int line
, CORE_ADDR pc
);
273 extern void start_symtab (char *name
, char *dirname
, CORE_ADDR start_addr
);
275 extern void restart_symtab (CORE_ADDR start_addr
);
277 extern int hashname (const char *name
);
279 extern void free_pending_blocks (void);
281 /* Record the name of the debug format in the current pending symbol
282 table. FORMAT must be a string with a lifetime at least as long as
283 the symtab's objfile. */
285 extern void record_debugformat (const char *format
);
287 /* Record the name of the debuginfo producer (usually the compiler) in
288 the current pending symbol table. PRODUCER must be a string with a
289 lifetime at least as long as the symtab's objfile. */
291 extern void record_producer (const char *producer
);
293 extern void merge_symbol_lists (struct pending
**srclist
,
294 struct pending
**targetlist
);
296 /* The macro table for the compilation unit whose symbols we're
297 currently reading. All the symtabs for this CU will point to
299 EXTERN
struct macro_table
*pending_macros
;
303 #endif /* defined (BUILDSYM_H) */