1 /* Build symbol tables in GDB's internal format.
2 Copyright (C) 1986-2015 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
*local_using_directives
;
123 /* global "using" directives. */
125 EXTERN
struct using_direct
*global_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
*local_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
;
180 /* The type of the record_line function. */
181 typedef void (record_line_ftype
) (struct subfile
*subfile
, int line
,
186 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
188 /* Function to invoke get the next symbol. Return the symbol name. */
190 EXTERN
char *(*next_symbol_text_func
) (struct objfile
*);
192 extern void add_symbol_to_list (struct symbol
*symbol
,
193 struct pending
**listhead
);
195 extern struct symbol
*find_symbol_in_list (struct pending
*list
,
196 char *name
, int length
);
198 extern struct block
*finish_block (struct symbol
*symbol
,
199 struct pending
**listhead
,
200 struct pending_block
*old_blocks
,
201 CORE_ADDR start
, CORE_ADDR end
);
203 extern void record_block_range (struct block
*,
204 CORE_ADDR start
, CORE_ADDR end_inclusive
);
206 extern void really_free_pendings (void *dummy
);
208 extern void start_subfile (const char *name
);
210 extern void patch_subfile_names (struct subfile
*subfile
, char *name
);
212 extern void push_subfile (void);
214 extern char *pop_subfile (void);
216 extern struct block
*end_symtab_get_static_block (CORE_ADDR end_addr
,
220 extern struct compunit_symtab
*
221 end_symtab_from_static_block (struct block
*static_block
,
222 int section
, int expandable
);
224 extern struct compunit_symtab
*end_symtab (CORE_ADDR end_addr
, int section
);
226 extern struct compunit_symtab
*end_expandable_symtab (CORE_ADDR end_addr
,
229 extern void augment_type_symtab (void);
231 /* Defined in stabsread.c. */
233 extern void scan_file_globals (struct objfile
*objfile
);
235 extern void buildsym_new_init (void);
237 extern void buildsym_init (void);
239 extern struct context_stack
*push_context (int desc
, CORE_ADDR valu
);
241 extern struct context_stack
*pop_context (void);
243 extern record_line_ftype record_line
;
245 extern struct compunit_symtab
*start_symtab (struct objfile
*objfile
,
247 const char *comp_dir
,
248 CORE_ADDR start_addr
);
250 extern void restart_symtab (struct compunit_symtab
*cust
,
251 const char *name
, CORE_ADDR start_addr
);
253 extern int hashname (const char *name
);
255 extern void free_pending_blocks (void);
257 /* Record the name of the debug format in the current pending symbol
258 table. FORMAT must be a string with a lifetime at least as long as
259 the symtab's objfile. */
261 extern void record_debugformat (const char *format
);
263 /* Record the name of the debuginfo producer (usually the compiler) in
264 the current pending symbol table. PRODUCER must be a string with a
265 lifetime at least as long as the symtab's objfile. */
267 extern void record_producer (const char *producer
);
269 extern void merge_symbol_lists (struct pending
**srclist
,
270 struct pending
**targetlist
);
272 /* Set the name of the last source file. NAME is copied by this
275 extern void set_last_source_file (const char *name
);
277 /* Fetch the name of the last source file. */
279 extern const char *get_last_source_file (void);
281 /* Return the compunit symtab object.
282 It is only valid to call this between calls to start_symtab and the
283 end_symtab* functions. */
285 extern struct compunit_symtab
*buildsym_compunit_symtab (void);
287 /* Return the macro table.
288 Initialize it if this is the first use.
289 It is only valid to call this between calls to start_symtab and the
290 end_symtab* functions. */
292 extern struct macro_table
*get_macro_table (void);
296 #endif /* defined (BUILDSYM_H) */