1 /* Build symbol tables in GDB's internal format.
2 Copyright (C) 1986-2014 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)
25 struct compunit_symtab;
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 /* Core address of start of text of current source file. This too
50 comes from the N_SO symbol. For Dwarf it typically comes from the
51 DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */
53 EXTERN CORE_ADDR last_source_start_addr;
55 /* The list of sub-source-files within the current individual
56 compilation. Each file gets its own symtab with its own linetable
57 and associated info, but they all share one blockvector. */
62 /* Space for this is malloc'd. */
64 /* Space for this is malloc'd. */
65 struct linetable *line_vector;
66 int line_vector_length;
67 /* The "containing" compunit. */
68 struct buildsym_compunit *buildsym_compunit;
69 enum language language;
70 struct symtab *symtab;
73 EXTERN struct subfile *current_subfile;
75 /* Global variable which, when set, indicates that we are processing a
76 .o file compiled with gcc */
78 EXTERN unsigned char processing_gcc_compilation;
80 /* When set, we are processing a .o file compiled by sun acc. This is
81 misnamed; it refers to all stabs-in-elf implementations which use
82 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
83 stabs-in-elf implementations ever invented will choose to be
86 EXTERN unsigned char processing_acc_compilation;
88 /* Count symbols as they are processed, for error messages. */
90 EXTERN unsigned int symnum;
92 /* Record the symbols defined for each context in a list. We don't
93 create a struct block for the context until we know how long to
96 #define PENDINGSIZE 100
100 struct pending *next;
102 struct symbol *symbol[PENDINGSIZE];
105 /* Here are the three lists that symbols are put on. */
107 /* static at top level, and types */
109 EXTERN struct pending *file_symbols;
111 /* global functions and variables */
113 EXTERN struct pending *global_symbols;
115 /* everything local to lexical context */
117 EXTERN struct pending *local_symbols;
119 /* "using" directives local to lexical context. */
121 EXTERN struct using_direct *using_directives;
123 /* Stack representing unclosed lexical contexts (that will become
124 blocks, eventually). */
128 /* Outer locals at the time we entered */
130 struct pending *locals;
132 /* Pending using directives at the time we entered. */
134 struct using_direct *using_directives;
136 /* Pointer into blocklist as of entry */
138 struct pending_block *old_blocks;
140 /* Name of function, if any, defining context */
144 /* PC where this context starts */
146 CORE_ADDR start_addr;
148 /* Temp slot for exception handling. */
152 /* For error-checking matching push/pop */
158 EXTERN struct context_stack *context_stack;
160 /* Index of first unused entry in context stack. */
162 EXTERN int context_stack_depth;
164 /* Currently allocated size of context stack. */
166 EXTERN int context_stack_size;
168 /* Non-zero if the context stack is empty. */
169 #define outermost_context_p() (context_stack_depth == 0)
171 /* Nonzero if within a function (so symbols should be local, if
172 nothing says specifically). */
174 EXTERN int within_function;
176 /* The type of the record_line function. */
177 typedef void (record_line_ftype) (struct subfile *subfile, int line,
182 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
184 /* Function to invoke get the next symbol. Return the symbol name. */
186 EXTERN char *(*next_symbol_text_func) (struct objfile *);
188 extern void add_symbol_to_list (struct symbol *symbol,
189 struct pending **listhead);
191 extern struct symbol *find_symbol_in_list (struct pending *list,
192 char *name, int length);
194 extern struct block *finish_block (struct symbol *symbol,
195 struct pending **listhead,
196 struct pending_block *old_blocks,
197 CORE_ADDR start, CORE_ADDR end);
199 extern void record_block_range (struct block *,
200 CORE_ADDR start, CORE_ADDR end_inclusive);
202 extern void really_free_pendings (void *dummy);
204 extern void start_subfile (const char *name);
206 extern void patch_subfile_names (struct subfile *subfile, char *name);
208 extern void push_subfile (void);
210 extern char *pop_subfile (void);
212 extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
216 extern struct compunit_symtab *
217 end_symtab_from_static_block (struct block *static_block,
218 int section, int expandable);
220 extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section);
222 extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
225 extern void augment_type_symtab (struct compunit_symtab *cust);
227 /* Defined in stabsread.c. */
229 extern void scan_file_globals (struct objfile *objfile);
231 extern void buildsym_new_init (void);
233 extern void buildsym_init (void);
235 extern struct context_stack *push_context (int desc, CORE_ADDR valu);
237 extern struct context_stack *pop_context (void);
239 extern record_line_ftype record_line;
241 extern struct compunit_symtab *start_symtab (struct objfile *objfile,
243 const char *comp_dir,
244 CORE_ADDR start_addr);
246 extern void restart_symtab (CORE_ADDR start_addr);
248 extern int hashname (const char *name);
250 extern void free_pending_blocks (void);
252 /* Record the name of the debug format in the current pending symbol
253 table. FORMAT must be a string with a lifetime at least as long as
254 the symtab's objfile. */
256 extern void record_debugformat (const char *format);
258 /* Record the name of the debuginfo producer (usually the compiler) in
259 the current pending symbol table. PRODUCER must be a string with a
260 lifetime at least as long as the symtab's objfile. */
262 extern void record_producer (const char *producer);
264 extern void merge_symbol_lists (struct pending **srclist,
265 struct pending **targetlist);
267 /* Set the name of the last source file. NAME is copied by this
270 extern void set_last_source_file (const char *name);
272 /* Fetch the name of the last source file. */
274 extern const char *get_last_source_file (void);
276 /* Return the compunit symtab object.
277 It is only valid to call this between calls to start_symtab and the
278 end_symtab* functions. */
280 extern struct compunit_symtab *buildsym_compunit_symtab (void);
282 /* Return the macro table.
283 Initialize it if this is the first use.
284 It is only valid to call this between calls to start_symtab and the
285 end_symtab* functions. */
287 extern struct macro_table *get_macro_table (void);
291 #endif /* defined (BUILDSYM_H) */