gcc/c-pragma.h

   1 /* Pragma related interfaces.
   2    Copyright (C) 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   3    2007  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_THREADPRIVATE,
  45
  46   PRAGMA_GCC_PCH_PREPROCESS,
  47
  48   PRAGMA_FIRST_EXTERNAL
  49 } pragma_kind;
  50
  51
  52 /* All clauses defined by OpenMP 2.5.
  53    Used internally by both C and C++ parsers.  */
  54 typedef enum pragma_omp_clause {
  55   PRAGMA_OMP_CLAUSE_NONE = 0,
  56
  57   PRAGMA_OMP_CLAUSE_COPYIN,
  58   PRAGMA_OMP_CLAUSE_COPYPRIVATE,
  59   PRAGMA_OMP_CLAUSE_DEFAULT,
  60   PRAGMA_OMP_CLAUSE_FIRSTPRIVATE,
  61   PRAGMA_OMP_CLAUSE_IF,
  62   PRAGMA_OMP_CLAUSE_LASTPRIVATE,
  63   PRAGMA_OMP_CLAUSE_NOWAIT,
  64   PRAGMA_OMP_CLAUSE_NUM_THREADS,
  65   PRAGMA_OMP_CLAUSE_ORDERED,
  66   PRAGMA_OMP_CLAUSE_PRIVATE,
  67   PRAGMA_OMP_CLAUSE_REDUCTION,
  68   PRAGMA_OMP_CLAUSE_SCHEDULE,
  69   PRAGMA_OMP_CLAUSE_SHARED
  70 } pragma_omp_clause;
  71
  72 extern struct cpp_reader* parse_in;
  73
  74 #define HANDLE_PRAGMA_WEAK SUPPORTS_WEAK
  75
  76 #ifdef HANDLE_SYSV_PRAGMA
  77 /* We always support #pragma pack for SYSV pragmas.  */
  78 #ifndef HANDLE_PRAGMA_PACK
  79 #define HANDLE_PRAGMA_PACK 1
  80 #endif
  81 #endif /* HANDLE_SYSV_PRAGMA */
  82
  83
  84 #ifdef HANDLE_PRAGMA_PACK_PUSH_POP
  85 /* If we are supporting #pragma pack(push... then we automatically
  86    support #pragma pack(<n>)  */
  87 #define HANDLE_PRAGMA_PACK 1
  88 #endif /* HANDLE_PRAGMA_PACK_PUSH_POP */
  89
  90 /* It's safe to always leave visibility pragma enabled as if
  91    visibility is not supported on the host OS platform the
  92    statements are ignored.  */
  93 #define HANDLE_PRAGMA_VISIBILITY 1
  94 extern void push_visibility (const char *);
  95 extern void pop_visibility (void);
  96
  97 extern void init_pragma (void);
  98
  99 /* Front-end wrappers for pragma registration.  */
 100 typedef void (*pragma_handler)(struct cpp_reader *);
 101 extern void c_register_pragma (const char *, const char *, pragma_handler);
 102 extern void c_register_pragma_with_expansion (const char *, const char *,
 103                                               pragma_handler);
 104 extern void c_invoke_pragma_handler (unsigned int);
 105
 106 extern void maybe_apply_pragma_weak (tree);
 107 extern void maybe_apply_pending_pragma_weaks (void);
 108 extern tree maybe_apply_renaming_pragma (tree, tree);
 109 extern void add_to_renaming_pragma_list (tree, tree);
 110
 111 extern enum cpp_ttype pragma_lex (tree *);
 112
 113 /* This is not actually available to pragma parsers.  It's merely a
 114    convenient location to declare this function for c-lex, after
 115    having enum cpp_ttype declared.  */
 116 extern enum cpp_ttype c_lex_with_flags (tree *, location_t *, unsigned char *);
 117
 118 /* If 1, then lex strings into the execution character set.
 119    If 0, lex strings into the host character set.
 120    If -1, lex both, and chain them together, such that the former
 121    is the TREE_CHAIN of the latter.  */
 122 extern int c_lex_string_translate;
 123
 124 /* If true, strings should be passed to the caller of c_lex completely
 125    unmolested (no concatenation, no translation).  */
 126 extern bool c_lex_return_raw_strings;
 127
 128 #endif /* GCC_C_PRAGMA_H */