1 /* Pragma related interfaces. 2 Copyright (C) 1995-2013 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef GCC_C_PRAGMA_H 21 #define GCC_C_PRAGMA_H 22 23 #include "cpplib.h" /* For enum cpp_ttype. */ 24 25 /* Pragma identifiers built in to the front end parsers. Identifiers 26 for ancillary handlers will follow these. */ 27 typedef enum pragma_kind { 28 PRAGMA_NONE = 0, 29 30 PRAGMA_OMP_ATOMIC, 31 PRAGMA_OMP_BARRIER, 32 PRAGMA_OMP_CRITICAL, 33 PRAGMA_OMP_FLUSH, 34 PRAGMA_OMP_FOR, 35 PRAGMA_OMP_MASTER, 36 PRAGMA_OMP_ORDERED, 37 PRAGMA_OMP_PARALLEL, 38 PRAGMA_OMP_PARALLEL_FOR, 39 PRAGMA_OMP_PARALLEL_SECTIONS, 40 PRAGMA_OMP_SECTION, 41 PRAGMA_OMP_SECTIONS, 42 PRAGMA_OMP_SINGLE, 43 PRAGMA_OMP_TASK, 44 PRAGMA_OMP_TASKWAIT, 45 PRAGMA_OMP_TASKYIELD, 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_FINAL, 75 PRAGMA_OMP_CLAUSE_MERGEABLE 76 } pragma_omp_clause; 77 78 extern struct cpp_reader* parse_in; 79 80 /* It's safe to always leave visibility pragma enabled as if 81 visibility is not supported on the host OS platform the 82 statements are ignored. */ 83 extern void push_visibility (const char *, int); 84 extern bool pop_visibility (int); 85 86 extern void init_pragma (void); 87 88 /* Front-end wrappers for pragma registration. */ 89 typedef void (*pragma_handler_1arg)(struct cpp_reader *); 90 /* A second pragma handler, which adds a void * argument allowing to pass extra 91 data to the handler. */ 92 typedef void (*pragma_handler_2arg)(struct cpp_reader *, void *); 93 94 /* This union allows to abstract the different handlers. */ 95 union gen_pragma_handler { 96 pragma_handler_1arg handler_1arg; 97 pragma_handler_2arg handler_2arg; 98 }; 99 /* Internally used to keep the data of the handler. */ 100 struct internal_pragma_handler_d { 101 union gen_pragma_handler handler; 102 /* Permits to know if handler is a pragma_handler_1arg (extra_data is false) 103 or a pragma_handler_2arg (extra_data is true). */ 104 bool extra_data; 105 /* A data field which can be used when extra_data is true. */ 106 void * data; 107 }; 108 typedef struct internal_pragma_handler_d internal_pragma_handler; 109 110 extern void c_register_pragma (const char *space, const char *name, 111 pragma_handler_1arg handler); 112 extern void c_register_pragma_with_data (const char *space, const char *name, 113 pragma_handler_2arg handler, 114 void *data); 115 116 extern void c_register_pragma_with_expansion (const char *space, 117 const char *name, 118 pragma_handler_1arg handler); 119 extern void c_register_pragma_with_expansion_and_data (const char *space, 120 const char *name, 121 pragma_handler_2arg handler, 122 void *data); 123 extern void c_invoke_pragma_handler (unsigned int); 124 125 extern void maybe_apply_pragma_weak (tree); 126 extern void maybe_apply_pending_pragma_weaks (void); 127 extern tree maybe_apply_renaming_pragma (tree, tree); 128 extern void add_to_renaming_pragma_list (tree, tree); 129 130 extern enum cpp_ttype pragma_lex (tree *); 131 132 /* Flags for use with c_lex_with_flags. The values here were picked 133 so that 0 means to translate and join strings. */ 134 #define C_LEX_STRING_NO_TRANSLATE 1 /* Do not lex strings into 135 execution character set. */ 136 #define C_LEX_STRING_NO_JOIN 2 /* Do not concatenate strings 137 nor translate them into execution 138 character set. */ 139 140 /* This is not actually available to pragma parsers. It's merely a 141 convenient location to declare this function for c-lex, after 142 having enum cpp_ttype declared. */ 143 extern enum cpp_ttype c_lex_with_flags (tree *, location_t *, unsigned char *, 144 int); 145 146 extern void c_pp_lookup_pragma (unsigned int, const char **, const char **); 147 148 extern GTY(()) tree pragma_extern_prefix; 149 150 #endif /* GCC_C_PRAGMA_H */ 151