gcc/builtin-attrs.def

   1 /* Copyright (C) 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
   2    Contributed by Joseph Myers <jsm28@cam.ac.uk>.
   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 2, 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 COPYING.  If not, write to the Free
  18 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301, USA.  */
  20
  21 /* This header provides a declarative way of describing the attributes
  22    that are applied to some functions by default.
  23
  24    Before including this header, you must define the following macros.
  25    In each case where there is an ENUM, it is an identifier used to
  26    reference the tree in subsequent definitions.
  27
  28    DEF_ATTR_NULL_TREE (ENUM)
  29
  30      Constructs a NULL_TREE.
  31
  32    DEF_ATTR_INT (ENUM, VALUE)
  33
  34      Constructs an INTEGER_CST with value VALUE (an integer representable
  35      in HOST_WIDE_INT).
  36
  37    DEF_ATTR_IDENT (ENUM, STRING)
  38
  39      Constructs an IDENTIFIER_NODE for STRING.
  40
  41    DEF_ATTR_TREE_LIST (ENUM, PURPOSE, VALUE, CHAIN)
  42
  43      Constructs a TREE_LIST with given PURPOSE, VALUE and CHAIN (given
  44      as previous ENUM names).  */
  45
  46 DEF_ATTR_NULL_TREE (ATTR_NULL)
  47
  48 /* Construct a tree for a given integer and a list containing it.  */
  49 #define DEF_ATTR_FOR_INT(VALUE)                                 \
  50   DEF_ATTR_INT (ATTR_##VALUE, VALUE)                    \
  51   DEF_ATTR_TREE_LIST (ATTR_LIST_##VALUE, ATTR_NULL,     \
  52                       ATTR_##VALUE, ATTR_NULL)
  53 DEF_ATTR_FOR_INT (0)
  54 DEF_ATTR_FOR_INT (1)
  55 DEF_ATTR_FOR_INT (2)
  56 DEF_ATTR_FOR_INT (3)
  57 DEF_ATTR_FOR_INT (4)
  58 DEF_ATTR_FOR_INT (5)
  59 DEF_ATTR_FOR_INT (6)
  60 #undef DEF_ATTR_FOR_INT
  61
  62 /* Construct a tree for a list of two integers.  */
  63 #define DEF_LIST_INT_INT(VALUE1, VALUE2)                                 \
  64   DEF_ATTR_TREE_LIST (ATTR_LIST_##VALUE1##_##VALUE2, ATTR_NULL,          \
  65                       ATTR_##VALUE1, ATTR_LIST_##VALUE2)
  66 DEF_LIST_INT_INT (1,0)
  67 DEF_LIST_INT_INT (1,2)
  68 DEF_LIST_INT_INT (2,0)
  69 DEF_LIST_INT_INT (2,3)
  70 DEF_LIST_INT_INT (3,0)
  71 DEF_LIST_INT_INT (3,4)
  72 DEF_LIST_INT_INT (4,0)
  73 DEF_LIST_INT_INT (4,5)
  74 DEF_LIST_INT_INT (5,0)
  75 DEF_LIST_INT_INT (5,6)
  76 #undef DEF_LIST_INT_INT
  77
  78 /* Construct trees for identifiers.  */
  79 DEF_ATTR_IDENT (ATTR_CONST, "const")
  80 DEF_ATTR_IDENT (ATTR_FORMAT, "format")
  81 DEF_ATTR_IDENT (ATTR_FORMAT_ARG, "format_arg")
  82 DEF_ATTR_IDENT (ATTR_MALLOC, "malloc")
  83 DEF_ATTR_IDENT (ATTR_NONNULL, "nonnull")
  84 DEF_ATTR_IDENT (ATTR_NORETURN, "noreturn")
  85 DEF_ATTR_IDENT (ATTR_NOTHROW, "nothrow")
  86 DEF_ATTR_IDENT (ATTR_PRINTF, "printf")
  87 DEF_ATTR_IDENT (ATTR_ASM_FPRINTF, "asm_fprintf")
  88 DEF_ATTR_IDENT (ATTR_GCC_DIAG, "gcc_diag")
  89 DEF_ATTR_IDENT (ATTR_GCC_CDIAG, "gcc_cdiag")
  90 DEF_ATTR_IDENT (ATTR_GCC_CXXDIAG, "gcc_cxxdiag")
  91 DEF_ATTR_IDENT (ATTR_PURE, "pure")
  92 DEF_ATTR_IDENT (ATTR_NOVOPS, "no vops")
  93 DEF_ATTR_IDENT (ATTR_SCANF, "scanf")
  94 DEF_ATTR_IDENT (ATTR_SENTINEL, "sentinel")
  95 DEF_ATTR_IDENT (ATTR_STRFMON, "strfmon")
  96 DEF_ATTR_IDENT (ATTR_STRFTIME, "strftime")
  97
  98 DEF_ATTR_TREE_LIST (ATTR_NOVOPS_LIST, ATTR_NOVOPS, ATTR_NULL, ATTR_NULL)
  99
 100 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_LIST, ATTR_NOTHROW, ATTR_NULL, ATTR_NULL)
 101
 102 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_LIST, ATTR_CONST,        \
 103                         ATTR_NULL, ATTR_NOTHROW_LIST)
 104 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_LIST, ATTR_PURE,          \
 105                         ATTR_NULL, ATTR_NOTHROW_LIST)
 106 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_NOVOPS_LIST, ATTR_NOVOPS, \
 107                         ATTR_NULL, ATTR_PURE_NOTHROW_LIST)
 108 DEF_ATTR_TREE_LIST (ATTR_NORETURN_NOTHROW_LIST, ATTR_NORETURN,  \
 109                         ATTR_NULL, ATTR_NOTHROW_LIST)
 110 DEF_ATTR_TREE_LIST (ATTR_MALLOC_NOTHROW_LIST, ATTR_MALLOC,      \
 111                         ATTR_NULL, ATTR_NOTHROW_LIST)
 112 DEF_ATTR_TREE_LIST (ATTR_SENTINEL_NOTHROW_LIST, ATTR_SENTINEL,  \
 113                         ATTR_NULL, ATTR_NOTHROW_LIST)
 114
 115 /* Functions whose pointer parameter(s) are all nonnull.  */
 116 DEF_ATTR_TREE_LIST (ATTR_NONNULL_LIST, ATTR_NONNULL, ATTR_NULL, ATTR_NULL)
 117 /* Functions whose first parameter is a nonnull pointer.  */
 118 DEF_ATTR_TREE_LIST (ATTR_NONNULL_1, ATTR_NONNULL, ATTR_LIST_1, ATTR_NULL)
 119 /* Functions whose second parameter is a nonnull pointer.  */
 120 DEF_ATTR_TREE_LIST (ATTR_NONNULL_2, ATTR_NONNULL, ATTR_LIST_2, ATTR_NULL)
 121 /* Nothrow functions with the sentinel(1) attribute. */
 122 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_SENTINEL_1, ATTR_SENTINEL, ATTR_LIST_1, \
 123                         ATTR_NOTHROW_LIST)
 124 /* Nothrow functions whose pointer parameter(s) are all nonnull.  */
 125 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL, ATTR_NONNULL, ATTR_NULL, \
 126                         ATTR_NOTHROW_LIST)
 127 /* Nothrow functions whose first parameter is a nonnull pointer.  */
 128 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_1, ATTR_NONNULL, ATTR_LIST_1, \
 129                         ATTR_NOTHROW_LIST)
 130 /* Nothrow functions whose second parameter is a nonnull pointer.  */
 131 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_2, ATTR_NONNULL, ATTR_LIST_2, \
 132                         ATTR_NOTHROW_LIST)
 133 /* Nothrow functions whose third parameter is a nonnull pointer.  */
 134 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_3, ATTR_NONNULL, ATTR_LIST_3, \
 135                         ATTR_NOTHROW_LIST)
 136 /* Nothrow functions whose fourth parameter is a nonnull pointer.  */
 137 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_4, ATTR_NONNULL, ATTR_LIST_4, \
 138                         ATTR_NOTHROW_LIST)
 139 /* Nothrow functions whose fifth parameter is a nonnull pointer.  */
 140 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_5, ATTR_NONNULL, ATTR_LIST_5, \
 141                         ATTR_NOTHROW_LIST)
 142 /* Nothrow const functions whose pointer parameter(s) are all nonnull.  */
 143 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_NONNULL, ATTR_CONST, ATTR_NULL, \
 144                         ATTR_NOTHROW_NONNULL)
 145 /* Nothrow pure functions whose pointer parameter(s) are all nonnull.  */
 146 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_NONNULL, ATTR_PURE, ATTR_NULL, \
 147                         ATTR_NOTHROW_NONNULL)
 148 /* Nothrow malloc functions whose pointer parameter(s) are all nonnull.  */
 149 DEF_ATTR_TREE_LIST (ATTR_MALLOC_NOTHROW_NONNULL, ATTR_MALLOC, ATTR_NULL, \
 150                         ATTR_NOTHROW_NONNULL)
 151
 152 /* Construct a tree for a format attribute.  */
 153 #define DEF_FORMAT_ATTRIBUTE(TYPE, FA, VALUES)                           \
 154   DEF_ATTR_TREE_LIST (ATTR_##TYPE##_##VALUES, ATTR_NULL,                 \
 155                       ATTR_##TYPE, ATTR_LIST_##VALUES)                   \
 156   DEF_ATTR_TREE_LIST (ATTR_FORMAT_##TYPE##_##VALUES, ATTR_FORMAT,        \
 157                       ATTR_##TYPE##_##VALUES, ATTR_NOTHROW_NONNULL_##FA)
 158 DEF_FORMAT_ATTRIBUTE(PRINTF,1,1_0)
 159 DEF_FORMAT_ATTRIBUTE(PRINTF,1,1_2)
 160 DEF_FORMAT_ATTRIBUTE(PRINTF,2,2_0)
 161 DEF_FORMAT_ATTRIBUTE(PRINTF,2,2_3)
 162 DEF_FORMAT_ATTRIBUTE(PRINTF,3,3_0)
 163 DEF_FORMAT_ATTRIBUTE(PRINTF,3,3_4)
 164 DEF_FORMAT_ATTRIBUTE(PRINTF,4,4_0)
 165 DEF_FORMAT_ATTRIBUTE(PRINTF,4,4_5)
 166 DEF_FORMAT_ATTRIBUTE(PRINTF,5,5_0)
 167 DEF_FORMAT_ATTRIBUTE(PRINTF,5,5_6)
 168 DEF_FORMAT_ATTRIBUTE(SCANF,1,1_0)
 169 DEF_FORMAT_ATTRIBUTE(SCANF,1,1_2)
 170 DEF_FORMAT_ATTRIBUTE(SCANF,2,2_0)
 171 DEF_FORMAT_ATTRIBUTE(SCANF,2,2_3)
 172 DEF_FORMAT_ATTRIBUTE(STRFTIME,3,3_0)
 173 DEF_FORMAT_ATTRIBUTE(STRFMON,3,3_4)
 174 #undef DEF_FORMAT_ATTRIBUTE
 175
 176 /* Construct a tree for a format_arg attribute.  */
 177 #define DEF_FORMAT_ARG_ATTRIBUTE(FA)                                    \
 178   DEF_ATTR_TREE_LIST (ATTR_FORMAT_ARG_##FA, ATTR_FORMAT_ARG,            \
 179                       ATTR_LIST_##FA, ATTR_NOTHROW_NONNULL_##FA)
 180 DEF_FORMAT_ARG_ATTRIBUTE(1)
 181 DEF_FORMAT_ARG_ATTRIBUTE(2)
 182 #undef DEF_FORMAT_ARG_ATTRIBUTE
 183