summaryrefslogtreecommitdiff
path: root/gdb/buildsym.h
blob: 5f572b2891b9b1bedb8152b627c5a564a0b6ff76 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
/* Build symbol tables in GDB's internal format.
   Copyright (C) 1986-1996 Free Software Foundation, Inc.

This file is part of GDB.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#if !defined (BUILDSYM_H)
#define BUILDSYM_H 1

/* This module provides definitions used for creating and adding to
   the symbol table.  These routines are called from various symbol-
   file-reading routines.  

   They originated in dbxread.c of gdb-4.2, and were split out to
   make xcoffread.c more maintainable by sharing code.

   Variables declared in this file can be defined by #define-ing
   the name EXTERN to null.  It is used to declare variables that
   are normally extern, but which get defined in a single module
   using this technique.  */

#ifndef EXTERN
#define	EXTERN extern
#endif

#define HASHSIZE 127	/* Size of things hashed via hashname() */

/* Name of source file whose symbol data we are now processing.
   This comes from a symbol of type N_SO. */

EXTERN char *last_source_file;

/* Core address of start of text of current source file.
   This too comes from the N_SO symbol. */

EXTERN CORE_ADDR last_source_start_addr;

/* The list of sub-source-files within the current individual compilation.
   Each file gets its own symtab with its own linetable and associated info,
   but they all share one blockvector.  */

struct subfile
{
  struct subfile *next;
  char *name;
  char *dirname;
  struct linetable *line_vector;
  int line_vector_length;
  enum language language;
  char *debugformat;
};

EXTERN struct subfile *subfiles;

EXTERN struct subfile *current_subfile;

/* Global variable which, when set, indicates that we are processing a
   .o file compiled with gcc */

EXTERN unsigned char processing_gcc_compilation;

/* When set, we are processing a .o file compiled by sun acc.  This is
   misnamed; it refers to all stabs-in-elf implementations which use
   N_UNDF the way Sun does, including Solaris gcc.  Hopefully all
   stabs-in-elf implementations ever invented will choose to be
   compatible.  */

EXTERN unsigned char processing_acc_compilation;

/* Count symbols as they are processed, for error messages.  */

EXTERN unsigned int symnum;

/* Record the symbols defined for each context in a list.
   We don't create a struct block for the context until we
   know how long to make it.  */

#define PENDINGSIZE 100

struct pending
{
  struct pending *next;
  int nsyms;
  struct symbol *symbol[PENDINGSIZE];
};

/* Here are the three lists that symbols are put on.  */

EXTERN struct pending *file_symbols;	/* static at top level, and types */

EXTERN struct pending *global_symbols;	/* global functions and variables */

EXTERN struct pending *local_symbols;	/* everything local to lexic context */

/* Stack representing unclosed lexical contexts
   (that will become blocks, eventually).  */

struct context_stack
{
  /* Outer locals at the time we entered */

  struct pending *locals;

  /* Pointer into blocklist as of entry */

  struct pending_block *old_blocks;

  /* Name of function, if any, defining context*/

  struct symbol *name;

  /* PC where this context starts */

  CORE_ADDR start_addr;

  /* Temp slot for exception handling. */

  CORE_ADDR end_addr;

  /* For error-checking matching push/pop */

  int depth;

};

EXTERN struct context_stack *context_stack;

/* Index of first unused entry in context stack.  */

EXTERN int context_stack_depth;

/* Currently allocated size of context stack.  */

EXTERN int context_stack_size;

/* Macro "function" for popping contexts from the stack.  Pushing is done
   by a real function, push_context.  This returns a pointer to a struct
   context_stack.  */

#define	pop_context() (&context_stack[--context_stack_depth]);

/* Nonzero if within a function (so symbols should be local,
   if nothing says specifically).  */

EXTERN int within_function;

/* List of blocks already made (lexical contexts already closed).
   This is used at the end to make the blockvector.  */

struct pending_block
{
  struct pending_block *next;
  struct block *block;
};


struct subfile_stack
{
  struct subfile_stack *next;
  char *name;
};

EXTERN struct subfile_stack *subfile_stack;

#define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)

/* Function to invoke get the next symbol.  Return the symbol name. */

EXTERN char *(*next_symbol_text_func) PARAMS ((struct objfile *));

/* Vector of types defined so far, indexed by their type numbers.
   Used for both stabs and coff.
   (In newer sun systems, dbx uses a pair of numbers in parens,
    as in "(SUBFILENUM,NUMWITHINSUBFILE)".  Then these numbers must be
    translated through the type_translations hash table to get
    the index into the type vector.)  */

EXTERN struct type **type_vector;

/* Number of elements allocated for type_vector currently.  */

EXTERN int type_vector_length;

/* Initial size of type vector.  Is realloc'd larger if needed,
   and realloc'd down to the size actually used, when completed.  */

#define	INITIAL_TYPE_VECTOR_LENGTH	160

extern void
add_symbol_to_list PARAMS ((struct symbol *, struct pending **));

extern struct symbol *
find_symbol_in_list PARAMS ((struct pending *, char *, int));

extern void
finish_block PARAMS ((struct symbol *, struct pending **,
		      struct pending_block *, CORE_ADDR, CORE_ADDR,
		      struct objfile *));

extern void
really_free_pendings PARAMS ((int foo));

extern void
start_subfile PARAMS ((char *, char *));

extern void
patch_subfile_names PARAMS ((struct subfile *subfile, char *name));

extern void
push_subfile PARAMS ((void));

extern char *
pop_subfile PARAMS ((void));

extern struct symtab *
end_symtab PARAMS ((CORE_ADDR, struct objfile *, int));

extern void
scan_file_globals PARAMS ((struct objfile *));

extern void
buildsym_new_init PARAMS ((void));

extern void
buildsym_init PARAMS ((void));

extern struct context_stack *
push_context PARAMS ((int, CORE_ADDR));

extern void
record_line PARAMS ((struct subfile *, int, CORE_ADDR));

extern void
start_symtab PARAMS ((char *, char *, CORE_ADDR));

extern int
hashname PARAMS ((char *));

extern void
free_pending_blocks PARAMS ((void));

/* FIXME: Note that this is used only in buildsym.c and dstread.c,
   which should be fixed to not need direct access to make_blockvector. */

extern struct blockvector *
make_blockvector PARAMS ((struct objfile *));

/* FIXME: Note that this is used only in buildsym.c and dstread.c,
   which should be fixed to not need direct access to record_pending_block. */

extern void
record_pending_block PARAMS ((struct objfile *, struct block *,
			      struct pending_block *));

extern void
record_debugformat PARAMS ((char *));

#undef EXTERN

#endif	/* defined (BUILDSYM_H) */