gcc/c-pragma.h

   1 /* Pragma related interfaces.
   2    Copyright (C) 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   3    2007, 2008  Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along 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.  */
  28 typedef 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.  */
  56 typedef 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
  76 extern 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
  98 extern void push_visibility (const char *, int);
  99 extern bool pop_visibility (int);
 100
 101 extern void init_pragma (void);
 102
 103 /* Front-end wrappers for pragma registration.  */
 104 typedef void (*pragma_handler)(struct cpp_reader *);
 105 extern void c_register_pragma (const char *, const char *, pragma_handler);
 106 extern void c_register_pragma_with_expansion (const char *, const char *,
 107                                               pragma_handler);
 108 extern void c_invoke_pragma_handler (unsigned int);
 109
 110 extern void maybe_apply_pragma_weak (tree);
 111 extern void maybe_apply_pending_pragma_weaks (void);
 112 extern tree maybe_apply_renaming_pragma (tree, tree);
 113 extern void add_to_renaming_pragma_list (tree, tree);
 114
 115 extern 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.  */
 128 extern enum cpp_ttype c_lex_with_flags (tree *, location_t *, unsigned char *,
 129                                         int);
 130
 131 extern void c_pp_lookup_pragma (unsigned int, const char **, const char **);
 132
 133 #endif /* GCC_C_PRAGMA_H */