1 /* Build symbol tables in GDB's internal format.
2 Copyright (C) 1986-1991 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 2 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, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
20 #if !defined (BUILDSYM_H)
23 /* This module provides definitions used for creating and adding to
24 the symbol table. These routines are called from various symbol-
25 file-reading routines.
27 They originated in dbxread.c of gdb-4.2, and were split out to
28 make xcoffread.c more maintainable by sharing code.
30 Variables declared in this file can be defined by #define-ing
31 the name EXTERN to null. It is used to declare variables that
32 are normally extern, but which get defined in a single module
33 using this technique. */
39 #define HASHSIZE 127 /* Size of things hashed via hashname() */
41 /* Name of source file whose symbol data we are now processing.
42 This comes from a symbol of type N_SO. */
44 EXTERN
char *last_source_file
;
46 /* Core address of start of text of current source file.
47 This too comes from the N_SO symbol. */
49 EXTERN CORE_ADDR last_source_start_addr
;
51 /* The list of sub-source-files within the current individual compilation.
52 Each file gets its own symtab with its own linetable and associated info,
53 but they all share one blockvector. */
60 struct linetable
*line_vector
;
61 int line_vector_length
;
64 EXTERN
struct subfile
*subfiles
;
66 EXTERN
struct subfile
*current_subfile
;
68 /* Global variable which, when set, indicates that we are processing a
69 .o file compiled with gcc */
71 EXTERN
unsigned char processing_gcc_compilation
;
73 /* When set, we are processing a .o file compiled by sun acc */
75 EXTERN
unsigned char processing_acc_compilation
;
77 /* Count symbols as they are processed, for error messages. */
79 EXTERN
unsigned int symnum
;
81 /* Record the symbols defined for each context in a list.
82 We don't create a struct block for the context until we
83 know how long to make it. */
85 #define PENDINGSIZE 100
91 struct symbol
*symbol
[PENDINGSIZE
];
94 /* List of free `struct pending' structures for reuse. */
96 EXTERN
struct pending
*free_pendings
;
98 /* Here are the three lists that symbols are put on. */
100 EXTERN
struct pending
*file_symbols
; /* static at top level, and types */
102 EXTERN
struct pending
*global_symbols
; /* global functions and variables */
104 EXTERN
struct pending
*local_symbols
; /* everything local to lexic context */
106 /* Stack representing unclosed lexical contexts
107 (that will become blocks, eventually). */
111 /* Outer locals at the time we entered */
113 struct pending
*locals
;
115 /* Pointer into blocklist as of entry */
117 struct pending_block
*old_blocks
;
119 /* Name of function, if any, defining context*/
123 /* PC where this context starts */
125 CORE_ADDR start_addr
;
127 /* Temp slot for exception handling. */
131 /* For error-checking matching push/pop */
137 EXTERN
struct context_stack
*context_stack
;
139 /* Index of first unused entry in context stack. */
141 EXTERN
int context_stack_depth
;
143 /* Currently allocated size of context stack. */
145 EXTERN
int context_stack_size
;
147 /* Macro "function" for popping contexts from the stack. Pushing is done
148 by a real function, push_context. This returns a pointer to a struct
151 #define pop_context() (&context_stack[--context_stack_depth]);
153 /* Nonzero if within a function (so symbols should be local,
154 if nothing says specifically). */
156 EXTERN
int within_function
;
158 /* List of blocks already made (lexical contexts already closed).
159 This is used at the end to make the blockvector. */
163 struct pending_block
*next
;
167 EXTERN
struct pending_block
*pending_blocks
;
172 struct subfile_stack
*next
;
176 EXTERN
struct subfile_stack
*subfile_stack
;
178 #define next_symbol_text() (*next_symbol_text_func)()
180 /* Function to invoke get the next symbol. Return the symbol name. */
182 EXTERN
char *(*next_symbol_text_func
) PARAMS ((void));
184 /* Vector of types defined so far, indexed by their type numbers.
185 Used for both stabs and coff.
186 (In newer sun systems, dbx uses a pair of numbers in parens,
187 as in "(SUBFILENUM,NUMWITHINSUBFILE)". Then these numbers must be
188 translated through the type_translations hash table to get
189 the index into the type vector.) */
191 EXTERN
struct type
**type_vector
;
193 /* Number of elements allocated for type_vector currently. */
195 EXTERN
int type_vector_length
;
197 /* Initial size of type vector. Is realloc'd larger if needed,
198 and realloc'd down to the size actually used, when completed. */
200 #define INITIAL_TYPE_VECTOR_LENGTH 160
203 add_symbol_to_list
PARAMS ((struct symbol
*, struct pending
**));
205 extern struct symbol
*
206 find_symbol_in_list
PARAMS ((struct pending
*, char *, int));
209 finish_block
PARAMS ((struct symbol
*, struct pending
**,
210 struct pending_block
*, CORE_ADDR
, CORE_ADDR
,
214 really_free_pendings
PARAMS ((int foo
));
217 start_subfile
PARAMS ((char *, char *));
220 patch_subfile_names
PARAMS ((struct subfile
*subfile
, char *name
));
223 push_subfile
PARAMS ((void));
226 pop_subfile
PARAMS ((void));
228 extern struct symtab
*
229 end_symtab
PARAMS ((CORE_ADDR
, int, int, struct objfile
*));
232 scan_file_globals
PARAMS ((struct objfile
*));
235 buildsym_new_init
PARAMS ((void));
238 buildsym_init
PARAMS ((void));
240 extern struct context_stack
*
241 push_context
PARAMS ((int, CORE_ADDR
));
244 record_line
PARAMS ((struct subfile
*, int, CORE_ADDR
));
247 start_symtab
PARAMS ((char *, char *, CORE_ADDR
));
249 extern struct partial_symtab
*
250 start_psymtab
PARAMS ((struct objfile
*, struct section_offsets
*, char *,
251 CORE_ADDR
, int, struct partial_symbol
*,
252 struct partial_symbol
*));
255 end_psymtab
PARAMS ((struct partial_symtab
*, char **, int, int, CORE_ADDR
,
256 struct partial_symtab
**, int));
259 process_one_symbol
PARAMS ((int, int, CORE_ADDR
, char *,
260 struct section_offsets
*, struct objfile
*));
262 hashname
PARAMS ((char *));
266 #endif /* defined (BUILDSYM_H) */