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 /* Core address of start of text of current source file. This too
49 comes from the N_SO symbol. For Dwarf it typically comes from the
50 DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */
52 EXTERN CORE_ADDR last_source_start_addr;
54 /* The list of sub-source-files within the current individual
55 compilation. Each file gets its own symtab with its own linetable
56 and associated info, but they all share one blockvector. */
63 struct linetable *line_vector;
64 int line_vector_length;
65 enum language language;
67 const char *debugformat;
68 struct symtab *symtab;
71 EXTERN struct subfile *current_subfile;
73 /* Global variable which, when set, indicates that we are processing a
74 .o file compiled with gcc */
76 EXTERN unsigned char processing_gcc_compilation;
78 /* When set, we are processing a .o file compiled by sun acc. This is
79 misnamed; it refers to all stabs-in-elf implementations which use
80 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
81 stabs-in-elf implementations ever invented will choose to be
84 EXTERN unsigned char processing_acc_compilation;
86 /* Count symbols as they are processed, for error messages. */
88 EXTERN unsigned int symnum;
90 /* Record the symbols defined for each context in a list. We don't
91 create a struct block for the context until we know how long to
94 #define PENDINGSIZE 100
100 struct symbol *symbol[PENDINGSIZE];
103 /* Here are the three lists that symbols are put on. */
105 /* static at top level, and types */
107 EXTERN struct pending *file_symbols;
109 /* global functions and variables */
111 EXTERN struct pending *global_symbols;
113 /* everything local to lexical context */
115 EXTERN struct pending *local_symbols;
117 /* "using" directives local to lexical context. */
119 EXTERN struct using_direct *using_directives;
121 /* Stack representing unclosed lexical contexts (that will become
122 blocks, eventually). */
126 /* Outer locals at the time we entered */
128 struct pending *locals;
130 /* Pending using directives at the time we entered. */
132 struct using_direct *using_directives;
134 /* Pointer into blocklist as of entry */
136 struct pending_block *old_blocks;
138 /* Name of function, if any, defining context */
142 /* PC where this context starts */
144 CORE_ADDR start_addr;
146 /* Temp slot for exception handling. */
150 /* For error-checking matching push/pop */
156 EXTERN struct context_stack *context_stack;
158 /* Index of first unused entry in context stack. */
160 EXTERN int context_stack_depth;
162 /* Currently allocated size of context stack. */
164 EXTERN int context_stack_size;
166 /* Non-zero if the context stack is empty. */
167 #define outermost_context_p() (context_stack_depth == 0)
169 /* Nonzero if within a function (so symbols should be local, if
170 nothing says specifically). */
172 EXTERN int within_function;
178 struct subfile_stack *next;
182 EXTERN struct subfile_stack *subfile_stack;
184 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
186 /* Function to invoke get the next symbol. Return the symbol name. */
188 EXTERN char *(*next_symbol_text_func) (struct objfile *);
190 /* Vector of types defined so far, indexed by their type numbers.
191 Used for both stabs and coff. (In newer sun systems, dbx uses a
192 pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)".
193 Then these numbers must be translated through the type_translations
194 hash table to get the index into the type vector.) */
196 EXTERN struct type **type_vector;
198 /* Number of elements allocated for type_vector currently. */
200 EXTERN int type_vector_length;
202 /* Initial size of type vector. Is realloc'd larger if needed, and
203 realloc'd down to the size actually used, when completed. */
205 #define INITIAL_TYPE_VECTOR_LENGTH 160
207 extern void add_symbol_to_list (struct symbol *symbol,
208 struct pending **listhead);
210 extern struct symbol *find_symbol_in_list (struct pending *list,
211 char *name, int length);
213 extern struct block *finish_block (struct symbol *symbol,
214 struct pending **listhead,
215 struct pending_block *old_blocks,
216 CORE_ADDR start, CORE_ADDR end,
217 struct objfile *objfile);
219 extern void record_block_range (struct block *,
220 CORE_ADDR start, CORE_ADDR end_inclusive);
222 extern void really_free_pendings (void *dummy);
224 extern void start_subfile (const char *name, const char *dirname);
226 extern void patch_subfile_names (struct subfile *subfile, char *name);
228 extern void push_subfile (void);
230 extern char *pop_subfile (void);
232 extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
233 struct objfile *objfile,
237 extern struct symtab *end_symtab_from_static_block (struct block *static_block,
238 struct objfile *objfile,
242 extern struct symtab *end_symtab (CORE_ADDR end_addr,
243 struct objfile *objfile, int section);
245 extern struct symtab *end_expandable_symtab (CORE_ADDR end_addr,
246 struct objfile *objfile,
249 extern void augment_type_symtab (struct objfile *objfile,
250 struct symtab *primary_symtab);
252 /* Defined in stabsread.c. */
254 extern void scan_file_globals (struct objfile *objfile);
256 extern void buildsym_new_init (void);
258 extern void buildsym_init (void);
260 extern struct context_stack *push_context (int desc, CORE_ADDR valu);
262 extern struct context_stack *pop_context (void);
264 extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc);
266 extern void start_symtab (const char *name, const char *dirname,
267 CORE_ADDR start_addr);
269 extern void restart_symtab (CORE_ADDR start_addr);
271 extern int hashname (const char *name);
273 extern void free_pending_blocks (void);
275 /* Record the name of the debug format in the current pending symbol
276 table. FORMAT must be a string with a lifetime at least as long as
277 the symtab's objfile. */
279 extern void record_debugformat (const char *format);
281 /* Record the name of the debuginfo producer (usually the compiler) in
282 the current pending symbol table. PRODUCER must be a string with a
283 lifetime at least as long as the symtab's objfile. */
285 extern void record_producer (const char *producer);
287 extern void merge_symbol_lists (struct pending **srclist,
288 struct pending **targetlist);
290 /* Set the name of the last source file. NAME is copied by this
293 extern void set_last_source_file (const char *name);
295 /* Fetch the name of the last source file. */
297 extern const char *get_last_source_file (void);
299 /* The macro table for the compilation unit whose symbols we're
300 currently reading. All the symtabs for this CU will point to
302 EXTERN struct macro_table *pending_macros;
306 #endif /* defined (BUILDSYM_H) */