1 /* Build symbol tables in GDB's internal format.
2 Copyright (C) 1986-2017 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
48 #define HASHSIZE 127 /* Size of things hashed via
51 /* Core address of start of text of current source file. This too
52 comes from the N_SO symbol. For Dwarf it typically comes from the
53 DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */
55 EXTERN CORE_ADDR last_source_start_addr;
57 /* The list of sub-source-files within the current individual
58 compilation. Each file gets its own symtab with its own linetable
59 and associated info, but they all share one blockvector. */
64 /* Space for this is malloc'd. */
66 /* Space for this is malloc'd. */
67 struct linetable *line_vector;
68 int line_vector_length;
69 /* The "containing" compunit. */
70 struct buildsym_compunit *buildsym_compunit;
71 enum language language;
72 struct symtab *symtab;
75 EXTERN struct subfile *current_subfile;
77 /* Global variable which, when set, indicates that we are processing a
78 .o file compiled with gcc */
80 EXTERN unsigned char processing_gcc_compilation;
82 /* When set, we are processing a .o file compiled by sun acc. This is
83 misnamed; it refers to all stabs-in-elf implementations which use
84 N_UNDF the way Sun does, including Solaris gcc. Hopefully all
85 stabs-in-elf implementations ever invented will choose to be
88 EXTERN unsigned char processing_acc_compilation;
90 /* Count symbols as they are processed, for error messages. */
92 EXTERN unsigned int symnum;
94 /* Record the symbols defined for each context in a list. We don't
95 create a struct block for the context until we know how long to
98 #define PENDINGSIZE 100
102 struct pending *next;
104 struct symbol *symbol[PENDINGSIZE];
107 /* Here are the three lists that symbols are put on. */
109 /* static at top level, and types */
111 EXTERN struct pending *file_symbols;
113 /* global functions and variables */
115 EXTERN struct pending *global_symbols;
117 /* everything local to lexical context */
119 EXTERN struct pending *local_symbols;
121 /* "using" directives local to lexical context. */
123 EXTERN struct using_direct *local_using_directives;
125 /* global "using" directives. */
127 EXTERN struct using_direct *global_using_directives;
129 /* Stack representing unclosed lexical contexts (that will become
130 blocks, eventually). */
134 /* Outer locals at the time we entered */
136 struct pending *locals;
138 /* Pending using directives at the time we entered. */
140 struct using_direct *local_using_directives;
142 /* Pointer into blocklist as of entry */
144 struct pending_block *old_blocks;
146 /* Name of function, if any, defining context */
150 /* Expression that computes the frame base of the lexically enclosing
151 function, if any. NULL otherwise. */
153 struct dynamic_prop *static_link;
155 /* PC where this context starts */
157 CORE_ADDR start_addr;
159 /* Temp slot for exception handling. */
163 /* For error-checking matching push/pop */
169 EXTERN struct context_stack *context_stack;
171 /* Index of first unused entry in context stack. */
173 EXTERN int context_stack_depth;
175 /* Currently allocated size of context stack. */
177 EXTERN int context_stack_size;
179 /* Non-zero if the context stack is empty. */
180 #define outermost_context_p() (context_stack_depth == 0)
182 /* Nonzero if within a function (so symbols should be local, if
183 nothing says specifically). */
185 EXTERN int within_function;
187 /* The type of the record_line function. */
188 typedef void (record_line_ftype) (struct subfile *subfile, int line,
193 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
195 /* Function to invoke get the next symbol. Return the symbol name. */
197 EXTERN const char *(*next_symbol_text_func) (struct objfile *);
199 extern void add_symbol_to_list (struct symbol *symbol,
200 struct pending **listhead);
202 extern struct symbol *find_symbol_in_list (struct pending *list,
203 char *name, int length);
205 extern struct block *finish_block (struct symbol *symbol,
206 struct pending **listhead,
207 struct pending_block *old_blocks,
208 const struct dynamic_prop *static_link,
212 extern void record_block_range (struct block *,
213 CORE_ADDR start, CORE_ADDR end_inclusive);
215 extern void really_free_pendings (void *dummy);
217 extern void start_subfile (const char *name);
219 extern void patch_subfile_names (struct subfile *subfile, const char *name);
221 extern void push_subfile (void);
223 extern char *pop_subfile (void);
225 extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
229 extern struct compunit_symtab *
230 end_symtab_from_static_block (struct block *static_block,
231 int section, int expandable);
233 extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section);
235 extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
238 extern void augment_type_symtab (void);
240 /* Defined in stabsread.c. */
242 extern void scan_file_globals (struct objfile *objfile);
244 extern void buildsym_new_init (void);
246 extern void buildsym_init (void);
248 extern struct context_stack *push_context (int desc, CORE_ADDR valu);
250 extern struct context_stack *pop_context (void);
252 extern record_line_ftype record_line;
254 extern struct compunit_symtab *start_symtab (struct objfile *objfile,
256 const char *comp_dir,
257 CORE_ADDR start_addr);
259 extern void restart_symtab (struct compunit_symtab *cust,
260 const char *name, CORE_ADDR start_addr);
262 extern int hashname (const char *name);
264 extern void free_pending_blocks (void);
266 /* Record the name of the debug format in the current pending symbol
267 table. FORMAT must be a string with a lifetime at least as long as
268 the symtab's objfile. */
270 extern void record_debugformat (const char *format);
272 /* Record the name of the debuginfo producer (usually the compiler) in
273 the current pending symbol table. PRODUCER must be a string with a
274 lifetime at least as long as the symtab's objfile. */
276 extern void record_producer (const char *producer);
278 extern void merge_symbol_lists (struct pending **srclist,
279 struct pending **targetlist);
281 /* Set the name of the last source file. NAME is copied by this
284 extern void set_last_source_file (const char *name);
286 /* Fetch the name of the last source file. */
288 extern const char *get_last_source_file (void);
290 /* Return the compunit symtab object.
291 It is only valid to call this between calls to start_symtab and the
292 end_symtab* functions. */
294 extern struct compunit_symtab *buildsym_compunit_symtab (void);
296 /* Return the macro table.
297 Initialize it if this is the first use.
298 It is only valid to call this between calls to start_symtab and the
299 end_symtab* functions. */
301 extern struct macro_table *get_macro_table (void);
305 #endif /* defined (BUILDSYM_H) */