1/* Pragma related interfaces.
2   Copyright (C) 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3   2007, 2008  Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3.  If not see
19<http://www.gnu.org/licenses/>.  */
20
21#ifndef GCC_C_PRAGMA_H
22#define GCC_C_PRAGMA_H
23
24#include <cpplib.h> /* For enum cpp_ttype.  */
25
26/* Pragma identifiers built in to the front end parsers.  Identifiers
27   for ancillary handlers will follow these.  */
28typedef enum pragma_kind {
29  PRAGMA_NONE = 0,
30
31  PRAGMA_OMP_ATOMIC,
32  PRAGMA_OMP_BARRIER,
33  PRAGMA_OMP_CRITICAL,
34  PRAGMA_OMP_FLUSH,
35  PRAGMA_OMP_FOR,
36  PRAGMA_OMP_MASTER,
37  PRAGMA_OMP_ORDERED,
38  PRAGMA_OMP_PARALLEL,
39  PRAGMA_OMP_PARALLEL_FOR,
40  PRAGMA_OMP_PARALLEL_SECTIONS,
41  PRAGMA_OMP_SECTION,
42  PRAGMA_OMP_SECTIONS,
43  PRAGMA_OMP_SINGLE,
44  PRAGMA_OMP_TASK,
45  PRAGMA_OMP_TASKWAIT,
46  PRAGMA_OMP_THREADPRIVATE,
47
48  PRAGMA_GCC_PCH_PREPROCESS,
49
50  PRAGMA_FIRST_EXTERNAL
51} pragma_kind;
52
53
54/* All clauses defined by OpenMP 2.5 and 3.0.
55   Used internally by both C and C++ parsers.  */
56typedef enum pragma_omp_clause {
57  PRAGMA_OMP_CLAUSE_NONE = 0,
58
59  PRAGMA_OMP_CLAUSE_COLLAPSE,
60  PRAGMA_OMP_CLAUSE_COPYIN,
61  PRAGMA_OMP_CLAUSE_COPYPRIVATE,
62  PRAGMA_OMP_CLAUSE_DEFAULT,
63  PRAGMA_OMP_CLAUSE_FIRSTPRIVATE,
64  PRAGMA_OMP_CLAUSE_IF,
65  PRAGMA_OMP_CLAUSE_LASTPRIVATE,
66  PRAGMA_OMP_CLAUSE_NOWAIT,
67  PRAGMA_OMP_CLAUSE_NUM_THREADS,
68  PRAGMA_OMP_CLAUSE_ORDERED,
69  PRAGMA_OMP_CLAUSE_PRIVATE,
70  PRAGMA_OMP_CLAUSE_REDUCTION,
71  PRAGMA_OMP_CLAUSE_SCHEDULE,
72  PRAGMA_OMP_CLAUSE_SHARED,
73  PRAGMA_OMP_CLAUSE_UNTIED
74} pragma_omp_clause;
75
76extern struct cpp_reader* parse_in;
77
78#define HANDLE_PRAGMA_WEAK SUPPORTS_WEAK
79
80#ifdef HANDLE_SYSV_PRAGMA
81/* We always support #pragma pack for SYSV pragmas.  */
82#ifndef HANDLE_PRAGMA_PACK
83#define HANDLE_PRAGMA_PACK 1
84#endif
85#endif /* HANDLE_SYSV_PRAGMA */
86
87
88#ifdef HANDLE_PRAGMA_PACK_PUSH_POP
89/* If we are supporting #pragma pack(push... then we automatically
90   support #pragma pack(<n>)  */
91#define HANDLE_PRAGMA_PACK 1
92#endif /* HANDLE_PRAGMA_PACK_PUSH_POP */
93
94/* It's safe to always leave visibility pragma enabled as if
95   visibility is not supported on the host OS platform the
96   statements are ignored.  */
97#define HANDLE_PRAGMA_VISIBILITY 1
98extern void push_visibility (const char *, int);
99extern bool pop_visibility (int);
100
101extern void init_pragma (void);
102
103/* Front-end wrappers for pragma registration.  */
104typedef void (*pragma_handler)(struct cpp_reader *);
105extern void c_register_pragma (const char *, const char *, pragma_handler);
106extern void c_register_pragma_with_expansion (const char *, const char *,
107					      pragma_handler);
108extern void c_invoke_pragma_handler (unsigned int);
109
110extern void maybe_apply_pragma_weak (tree);
111extern void maybe_apply_pending_pragma_weaks (void);
112extern tree maybe_apply_renaming_pragma (tree, tree);
113extern void add_to_renaming_pragma_list (tree, tree);
114
115extern enum cpp_ttype pragma_lex (tree *);
116
117/* Flags for use with c_lex_with_flags.  The values here were picked
118   so that 0 means to translate and join strings.  */
119#define C_LEX_STRING_NO_TRANSLATE 1 /* Do not lex strings into
120				       execution character set.  */
121#define C_LEX_STRING_NO_JOIN	  2 /* Do not concatenate strings
122				       nor translate them into execution
123				       character set.  */
124
125/* This is not actually available to pragma parsers.  It's merely a
126   convenient location to declare this function for c-lex, after
127   having enum cpp_ttype declared.  */
128extern enum cpp_ttype c_lex_with_flags (tree *, location_t *, unsigned char *,
129					int);
130
131extern void c_pp_lookup_pragma (unsigned int, const char **, const char **);
132
133#endif /* GCC_C_PRAGMA_H */
134