1130803Smarcel/* Dwarf2 location expression support for GDB.
2130803Smarcel   Copyright 2003 Free Software Foundation, Inc.
3130803Smarcel
4130803Smarcel   This file is part of GDB.
5130803Smarcel
6130803Smarcel   This program is free software; you can redistribute it and/or modify
7130803Smarcel   it under the terms of the GNU General Public License as published by
8130803Smarcel   the Free Software Foundation; either version 2 of the License, or
9130803Smarcel   (at your option) any later version.
10130803Smarcel
11130803Smarcel   This program is distributed in the hope that it will be useful,
12130803Smarcel   but WITHOUT ANY WARRANTY; without even the implied warranty of
13130803Smarcel   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14130803Smarcel   GNU General Public License for more details.
15130803Smarcel
16130803Smarcel   You should have received a copy of the GNU General Public License
17130803Smarcel   along with this program; if not, write to the Free Software
18130803Smarcel   Foundation, Inc., 59 Temple Place - Suite 330,
19130803Smarcel   Boston, MA 02111-1307, USA.  */
20130803Smarcel
21130803Smarcel#if !defined (DWARF2LOC_H)
22130803Smarcel#define DWARF2LOC_H
23130803Smarcel
24130803Smarcelstruct symbol_ops;
25130803Smarcel
26130803Smarcel/* This header is private to the DWARF-2 reader.  It is shared between
27130803Smarcel   dwarf2read.c and dwarf2loc.c.  */
28130803Smarcel
29130803Smarcel/* The symbol location baton types used by the DWARF-2 reader (i.e.
30130803Smarcel   SYMBOL_LOCATION_BATON for a LOC_COMPUTED symbol).  "struct
31130803Smarcel   dwarf2_locexpr_baton" is for a symbol with a single location
32130803Smarcel   expression; "struct dwarf2_loclist_baton" is for a symbol with a
33130803Smarcel   location list.  */
34130803Smarcel
35130803Smarcelstruct dwarf2_locexpr_baton
36130803Smarcel{
37130803Smarcel  /* Pointer to the start of the location expression.  */
38130803Smarcel  unsigned char *data;
39130803Smarcel
40130803Smarcel  /* Length of the location expression.  */
41240163Semaste  unsigned long size;
42130803Smarcel
43130803Smarcel  /* The objfile containing the symbol whose location we're computing.  */
44130803Smarcel  struct objfile *objfile;
45130803Smarcel};
46130803Smarcel
47130803Smarcelstruct dwarf2_loclist_baton
48130803Smarcel{
49130803Smarcel  /* The initial base address for the location list, based on the compilation
50130803Smarcel     unit.  */
51130803Smarcel  CORE_ADDR base_address;
52130803Smarcel
53130803Smarcel  /* Pointer to the start of the location list.  */
54130803Smarcel  unsigned char *data;
55130803Smarcel
56130803Smarcel  /* Length of the location list.  */
57240163Semaste  unsigned long size;
58130803Smarcel
59130803Smarcel  /* The objfile containing the symbol whose location we're computing.  */
60130803Smarcel  /* Used (only???) by thread local variables.  The objfile in which
61130803Smarcel     this symbol is defined.  To find a thread-local variable (e.g., a
62130803Smarcel     variable declared with the `__thread' storage class), we may need
63130803Smarcel     to know which object file it's in.  */
64130803Smarcel  struct objfile *objfile;
65130803Smarcel};
66130803Smarcel
67130803Smarcelextern const struct symbol_ops dwarf2_locexpr_funcs;
68130803Smarcelextern const struct symbol_ops dwarf2_loclist_funcs;
69130803Smarcel
70130803Smarcel#endif
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