1/* GCC core type declarations.
2   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 2, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING.  If not, write to the Free
18Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
1902110-1301, USA.  */
20
21/* Provide forward declarations of core types which are referred to by
22   most of the compiler.  This allows header files to use these types
23   (e.g. in function prototypes) without concern for whether the full
24   definitions are visible.  Some other declarations that need to be
25   universally visible are here, too.
26
27   In the context of tconfig.h, most of these have special definitions
28   which prevent them from being used except in further type
29   declarations.  This is a kludge; the right thing is to avoid
30   including the "tm.h" header set in the context of tconfig.h, but
31   we're not there yet.  */
32
33#ifndef GCC_CORETYPES_H
34#define GCC_CORETYPES_H
35
36#define GTY(x)  /* nothing - marker for gengtype */
37
38#ifndef USED_FOR_TARGET
39
40struct rtx_def;
41typedef struct rtx_def *rtx;
42struct rtvec_def;
43typedef struct rtvec_def *rtvec;
44union tree_node;
45typedef union tree_node *tree;
46
47/* Provide forward struct declaration so that we don't have to include
48   all of cpplib.h whenever a random prototype includes a pointer.
49   Note that the cpp_reader typedef remains part of cpplib.h.  */
50
51struct cpp_reader;
52
53/* The thread-local storage model associated with a given VAR_DECL
54   or SYMBOL_REF.  This isn't used much, but both trees and RTL refer
55   to it, so it's here.  */
56enum tls_model {
57  TLS_MODEL_NONE,
58  TLS_MODEL_GLOBAL_DYNAMIC,
59  TLS_MODEL_LOCAL_DYNAMIC,
60  TLS_MODEL_INITIAL_EXEC,
61  TLS_MODEL_LOCAL_EXEC
62};
63
64#else
65
66struct _dont_use_rtx_here_;
67struct _dont_use_rtvec_here_;
68union _dont_use_tree_here_;
69#define rtx struct _dont_use_rtx_here_ *
70#define rtvec struct _dont_use_rtvec_here *
71#define tree union _dont_use_tree_here_ *
72
73#endif
74
75#endif /* coretypes.h */
76
77