1 /* Build symbol tables in GDB's internal format.
2 Copyright (C) 1986-2013 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 3 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, see <http://www.gnu.org/licenses/>. */
19 #if !defined (BUILDSYM_H)
26 /* This module provides definitions used for creating and adding to
27 the symbol table. These routines are called from various symbol-
28 file-reading routines.
30 They originated in dbxread.c of gdb-4.2, and were split out to
31 make xcoffread.c more maintainable by sharing code.
33 Variables declared in this file can be defined by #define-ing the
34 name EXTERN to null. It is used to declare variables that are
35 normally extern, but which get defined in a single module using
45 #define HASHSIZE 127 /* Size of things hashed via
48 /* Name of source file whose symbol data we are now processing. This
49 comes from a symbol of type N_SO for stabs. For Dwarf it comes
50 from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */
52 EXTERN char *last_source_file;
54 /* Core address of start of text of current source file. This too
55 comes from the N_SO symbol. For Dwarf it typically comes from the
56 DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */
58 EXTERN CORE_ADDR last_source_start_addr;
60 /* The list of sub-source-files within the current individual
61 compilation. Each file gets its own symtab with its own linetable
62 and associated info, but they all share one blockvector. */
69 struct linetable *line_vector;
70 int line_vector_length;
71 enum language language;
73 const char *debugformat;
74 struct symtab *symtab;
77 EXTERN struct subfile *current_subfile;
79 /* Global variable which, when set, indicates that we are processing a
80 .o file compiled with gcc */
82 EXTERN unsigned char processing_gcc_compilation;
84 /* When set, we are processing a .o file compiled by sun acc. This is
85 misnamed; it refers to all stabs-in-elf implementations which use
86 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
87 stabs-in-elf implementations ever invented will choose to be
90 EXTERN unsigned char processing_acc_compilation;
92 /* Count symbols as they are processed, for error messages. */
94 EXTERN unsigned int symnum;
96 /* Record the symbols defined for each context in a list. We don't
97 create a struct block for the context until we know how long to
100 #define PENDINGSIZE 100
104 struct pending *next;
106 struct symbol *symbol[PENDINGSIZE];
109 /* Here are the three lists that symbols are put on. */
111 /* static at top level, and types */
113 EXTERN struct pending *file_symbols;
115 /* global functions and variables */
117 EXTERN struct pending *global_symbols;
119 /* everything local to lexical context */
121 EXTERN struct pending *local_symbols;
123 /* "using" directives local to lexical context. */
125 EXTERN struct using_direct *using_directives;
127 /* Stack representing unclosed lexical contexts (that will become
128 blocks, eventually). */
132 /* Outer locals at the time we entered */
134 struct pending *locals;
136 /* Pending using directives at the time we entered. */
138 struct using_direct *using_directives;
140 /* Pointer into blocklist as of entry */
142 struct pending_block *old_blocks;
144 /* Name of function, if any, defining context */
148 /* PC where this context starts */
150 CORE_ADDR start_addr;
152 /* Temp slot for exception handling. */
156 /* For error-checking matching push/pop */
162 EXTERN struct context_stack *context_stack;
164 /* Index of first unused entry in context stack. */
166 EXTERN int context_stack_depth;
168 /* Currently allocated size of context stack. */
170 EXTERN int context_stack_size;
172 /* Non-zero if the context stack is empty. */
173 #define outermost_context_p() (context_stack_depth == 0)
175 /* Nonzero if within a function (so symbols should be local, if
176 nothing says specifically). */
178 EXTERN int within_function;
184 struct subfile_stack *next;
188 EXTERN struct subfile_stack *subfile_stack;
190 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
192 /* Function to invoke get the next symbol. Return the symbol name. */
194 EXTERN char *(*next_symbol_text_func) (struct objfile *);
196 /* Vector of types defined so far, indexed by their type numbers.
197 Used for both stabs and coff. (In newer sun systems, dbx uses a
198 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
199 Then these numbers must be translated through the type_translations
200 hash table to get the index into the type vector.) */
202 EXTERN struct type **type_vector;
204 /* Number of elements allocated for type_vector currently. */
206 EXTERN int type_vector_length;
208 /* Initial size of type vector. Is realloc'd larger if needed, and
209 realloc'd down to the size actually used, when completed. */
211 #define INITIAL_TYPE_VECTOR_LENGTH 160
213 extern void add_symbol_to_list (struct symbol *symbol,
214 struct pending **listhead);
216 extern struct symbol *find_symbol_in_list (struct pending *list,
217 char *name, int length);
219 extern struct block *finish_block (struct symbol *symbol,
220 struct pending **listhead,
221 struct pending_block *old_blocks,
222 CORE_ADDR start, CORE_ADDR end,
223 struct objfile *objfile);
225 extern void record_block_range (struct block *,
226 CORE_ADDR start, CORE_ADDR end_inclusive);
228 extern void really_free_pendings (void *dummy);
230 extern void start_subfile (const char *name, const char *dirname);
232 extern void patch_subfile_names (struct subfile *subfile, char *name);
234 extern void push_subfile (void);
236 extern char *pop_subfile (void);
238 extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
239 struct objfile *objfile,
243 extern struct symtab *end_symtab_from_static_block (struct block *static_block,
244 struct objfile *objfile,
248 extern struct symtab *end_symtab (CORE_ADDR end_addr,
249 struct objfile *objfile, int section);
251 extern struct symtab *end_expandable_symtab (CORE_ADDR end_addr,
252 struct objfile *objfile,
255 extern void augment_type_symtab (struct objfile *objfile,
256 struct symtab *primary_symtab);
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 struct context_stack *pop_context (void);
270 extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc);
272 extern void start_symtab (char *name, char *dirname, CORE_ADDR start_addr);
274 extern void restart_symtab (CORE_ADDR start_addr);
276 extern int hashname (const char *name);
278 extern void free_pending_blocks (void);
280 /* Record the name of the debug format in the current pending symbol
281 table. FORMAT must be a string with a lifetime at least as long as
282 the symtab's objfile. */
284 extern void record_debugformat (const char *format);
286 /* Record the name of the debuginfo producer (usually the compiler) in
287 the current pending symbol table. PRODUCER must be a string with a
288 lifetime at least as long as the symtab's objfile. */
290 extern void record_producer (const char *producer);
292 extern void merge_symbol_lists (struct pending **srclist,
293 struct pending **targetlist);
295 /* The macro table for the compilation unit whose symbols we're
296 currently reading. All the symtabs for this CU will point to
298 EXTERN struct macro_table *pending_macros;
302 #endif /* defined (BUILDSYM_H) */