1 /* Copyright (C) 2001-2016 Free Software Foundation, Inc.
2 Contributed by Joseph Myers <jsm28@cam.ac.uk>.
4 This file is part of GCC.
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
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
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/>. */
20 /* This header provides a declarative way of describing the attributes
21 that are applied to some functions by default.
23 Before including this header, you must define the following macros.
24 In each case where there is an ENUM, it is an identifier used to
25 reference the tree in subsequent definitions.
27 DEF_ATTR_NULL_TREE (ENUM)
29 Constructs a NULL_TREE.
31 DEF_ATTR_INT (ENUM, VALUE)
33 Constructs an INTEGER_CST with value VALUE (an integer representable
36 DEF_ATTR_IDENT (ENUM, STRING)
38 Constructs an IDENTIFIER_NODE for STRING.
40 DEF_ATTR_TREE_LIST (ENUM, PURPOSE, VALUE, CHAIN)
42 Constructs a TREE_LIST with given PURPOSE, VALUE and CHAIN (given
43 as previous ENUM names). */
45 DEF_ATTR_NULL_TREE (ATTR_NULL)
47 /* Construct a tree for a given integer and a list containing it. */
48 #define DEF_ATTR_FOR_INT(VALUE) \
49 DEF_ATTR_INT (ATTR_##VALUE, VALUE) \
50 DEF_ATTR_TREE_LIST (ATTR_LIST_##VALUE, ATTR_NULL, \
51 ATTR_##VALUE, ATTR_NULL)
59 #undef DEF_ATTR_FOR_INT
61 /* Construct a tree for a given string and a list containing it. */
62 #define DEF_ATTR_FOR_STRING(ENUM, VALUE) \
63 DEF_ATTR_STRING (ATTR_##ENUM, VALUE) \
64 DEF_ATTR_TREE_LIST (ATTR_LIST_##ENUM, ATTR_NULL, \
65 ATTR_##ENUM, ATTR_NULL)
66 DEF_ATTR_FOR_STRING (STR1, "1")
67 #undef DEF_ATTR_FOR_STRING
69 /* Construct a tree for a list of two integers. */
70 #define DEF_LIST_INT_INT(VALUE1, VALUE2) \
71 DEF_ATTR_TREE_LIST (ATTR_LIST_##VALUE1##_##VALUE2, ATTR_NULL, \
72 ATTR_##VALUE1, ATTR_LIST_##VALUE2)
73 DEF_LIST_INT_INT (1,0)
74 DEF_LIST_INT_INT (1,2)
75 DEF_LIST_INT_INT (2,0)
76 DEF_LIST_INT_INT (2,3)
77 DEF_LIST_INT_INT (3,0)
78 DEF_LIST_INT_INT (3,4)
79 DEF_LIST_INT_INT (4,0)
80 DEF_LIST_INT_INT (4,5)
81 DEF_LIST_INT_INT (5,0)
82 DEF_LIST_INT_INT (5,6)
83 #undef DEF_LIST_INT_INT
85 /* Construct trees for identifiers. */
86 DEF_ATTR_IDENT (ATTR_COLD, "cold")
87 DEF_ATTR_IDENT (ATTR_CONST, "const")
88 DEF_ATTR_IDENT (ATTR_FORMAT, "format")
89 DEF_ATTR_IDENT (ATTR_FORMAT_ARG, "format_arg")
90 DEF_ATTR_IDENT (ATTR_MALLOC, "malloc")
91 DEF_ATTR_IDENT (ATTR_NONNULL, "nonnull")
92 DEF_ATTR_IDENT (ATTR_NORETURN, "noreturn")
93 DEF_ATTR_IDENT (ATTR_NOTHROW, "nothrow")
94 DEF_ATTR_IDENT (ATTR_LEAF, "leaf")
95 DEF_ATTR_IDENT (ATTR_FNSPEC, "fn spec")
96 DEF_ATTR_IDENT (ATTR_PRINTF, "printf")
97 DEF_ATTR_IDENT (ATTR_ASM_FPRINTF, "asm_fprintf")
98 DEF_ATTR_IDENT (ATTR_GCC_DIAG, "gcc_diag")
99 DEF_ATTR_IDENT (ATTR_GCC_CDIAG, "gcc_cdiag")
100 DEF_ATTR_IDENT (ATTR_GCC_CXXDIAG, "gcc_cxxdiag")
101 DEF_ATTR_IDENT (ATTR_PURE, "pure")
102 DEF_ATTR_IDENT (ATTR_NOVOPS, "no vops")
103 DEF_ATTR_IDENT (ATTR_SCANF, "scanf")
104 DEF_ATTR_IDENT (ATTR_SENTINEL, "sentinel")
105 DEF_ATTR_IDENT (ATTR_STRFMON, "strfmon")
106 DEF_ATTR_IDENT (ATTR_STRFTIME, "strftime")
107 DEF_ATTR_IDENT (ATTR_TYPEGENERIC, "type generic")
108 DEF_ATTR_IDENT (ATTR_TM_REGPARM, "*tm regparm")
109 DEF_ATTR_IDENT (ATTR_TM_TMPURE, "transaction_pure")
110 DEF_ATTR_IDENT (ATTR_RETURNS_TWICE, "returns_twice")
112 DEF_ATTR_TREE_LIST (ATTR_NOVOPS_LIST, ATTR_NOVOPS, ATTR_NULL, ATTR_NULL)
114 DEF_ATTR_TREE_LIST (ATTR_NOVOPS_LEAF_LIST, ATTR_LEAF, ATTR_NULL, ATTR_NOVOPS_LIST)
116 DEF_ATTR_TREE_LIST (ATTR_LEAF_LIST, ATTR_LEAF, ATTR_NULL, ATTR_NULL)
118 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_LIST, ATTR_NOTHROW, ATTR_NULL, ATTR_NULL)
120 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_LEAF_LIST, ATTR_LEAF, ATTR_NULL, ATTR_NOTHROW_LIST)
122 DEF_ATTR_TREE_LIST (ATTR_NOVOPS_NOTHROW_LEAF_LIST, ATTR_NOVOPS, \
123 ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
124 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_LIST, ATTR_CONST, \
125 ATTR_NULL, ATTR_NOTHROW_LIST)
126 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_LEAF_LIST, ATTR_CONST, \
127 ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
128 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_LIST, ATTR_PURE, \
129 ATTR_NULL, ATTR_NOTHROW_LIST)
130 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_LEAF_LIST, ATTR_PURE, \
131 ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
132 DEF_ATTR_TREE_LIST (ATTR_NORETURN_NOTHROW_LIST, ATTR_NORETURN, \
133 ATTR_NULL, ATTR_NOTHROW_LIST)
134 DEF_ATTR_TREE_LIST (ATTR_NORETURN_NOTHROW_LEAF_LIST, ATTR_NORETURN,\
135 ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
136 DEF_ATTR_TREE_LIST (ATTR_COLD_NOTHROW_LEAF_LIST, ATTR_COLD,\
137 ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
138 DEF_ATTR_TREE_LIST (ATTR_COLD_NORETURN_NOTHROW_LEAF_LIST, ATTR_COLD,\
139 ATTR_NULL, ATTR_NORETURN_NOTHROW_LEAF_LIST)
140 DEF_ATTR_TREE_LIST (ATTR_CONST_NORETURN_NOTHROW_LEAF_LIST, ATTR_CONST,\
141 ATTR_NULL, ATTR_NORETURN_NOTHROW_LEAF_LIST)
142 DEF_ATTR_TREE_LIST (ATTR_MALLOC_NOTHROW_LIST, ATTR_MALLOC, \
143 ATTR_NULL, ATTR_NOTHROW_LIST)
144 DEF_ATTR_TREE_LIST (ATTR_MALLOC_NOTHROW_LEAF_LIST, ATTR_MALLOC, \
145 ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
146 DEF_ATTR_TREE_LIST (ATTR_SENTINEL_NOTHROW_LIST, ATTR_SENTINEL, \
147 ATTR_NULL, ATTR_NOTHROW_LIST)
148 DEF_ATTR_TREE_LIST (ATTR_SENTINEL_NOTHROW_LEAF_LIST, ATTR_SENTINEL, \
149 ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
150 DEF_ATTR_TREE_LIST (ATTR_COLD_CONST_NORETURN_NOTHROW_LEAF_LIST, ATTR_CONST,\
151 ATTR_NULL, ATTR_COLD_NORETURN_NOTHROW_LEAF_LIST)
153 /* Functions whose pointer parameter(s) are all nonnull. */
154 DEF_ATTR_TREE_LIST (ATTR_NONNULL_LIST, ATTR_NONNULL, ATTR_NULL, ATTR_NULL)
155 /* Functions whose first parameter is a nonnull pointer. */
156 DEF_ATTR_TREE_LIST (ATTR_NONNULL_1, ATTR_NONNULL, ATTR_LIST_1, ATTR_NULL)
157 /* Functions whose second parameter is a nonnull pointer. */
158 DEF_ATTR_TREE_LIST (ATTR_NONNULL_2, ATTR_NONNULL, ATTR_LIST_2, ATTR_NULL)
159 /* Functions whose third parameter is a nonnull pointer. */
160 DEF_ATTR_TREE_LIST (ATTR_NONNULL_3, ATTR_NONNULL, ATTR_LIST_3, ATTR_NULL)
161 /* Nothrow functions with the sentinel(1) attribute. */
162 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_SENTINEL_1, ATTR_SENTINEL, ATTR_LIST_1, \
164 /* Nothrow functions whose pointer parameter(s) are all nonnull. */
165 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL, ATTR_NONNULL, ATTR_NULL, \
167 /* Nothrow leaf functions whose pointer parameter(s) are all nonnull. */
168 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_LEAF, ATTR_NONNULL, ATTR_NULL, \
169 ATTR_NOTHROW_LEAF_LIST)
170 /* Nothrow functions whose first parameter is a nonnull pointer. */
171 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_1, ATTR_NONNULL, ATTR_LIST_1, \
173 /* Nothrow functions whose second parameter is a nonnull pointer. */
174 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_2, ATTR_NONNULL, ATTR_LIST_2, \
176 /* Nothrow functions whose third parameter is a nonnull pointer. */
177 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_3, ATTR_NONNULL, ATTR_LIST_3, \
179 /* Nothrow functions whose fourth parameter is a nonnull pointer. */
180 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_4, ATTR_NONNULL, ATTR_LIST_4, \
182 /* Nothrow functions whose fifth parameter is a nonnull pointer. */
183 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_NONNULL_5, ATTR_NONNULL, ATTR_LIST_5, \
185 /* Nothrow leaf functions which are type-generic. */
186 DEF_ATTR_TREE_LIST (ATTR_NOTHROW_TYPEGENERIC_LEAF, ATTR_TYPEGENERIC, ATTR_NULL, \
187 ATTR_NOTHROW_LEAF_LIST)
188 /* Nothrow const functions whose pointer parameter(s) are all nonnull. */
189 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_NONNULL, ATTR_CONST, ATTR_NULL, \
190 ATTR_NOTHROW_NONNULL)
191 /* Nothrow leaf functions whose pointer parameter(s) are all nonnull,
192 and which return their first argument. */
193 DEF_ATTR_TREE_LIST (ATTR_RET1_NOTHROW_NONNULL_LEAF, ATTR_FNSPEC, ATTR_LIST_STR1, \
194 ATTR_NOTHROW_NONNULL_LEAF)
195 /* Nothrow const leaf functions whose pointer parameter(s) are all nonnull. */
196 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_NONNULL_LEAF, ATTR_CONST, ATTR_NULL, \
197 ATTR_NOTHROW_NONNULL_LEAF)
198 /* Nothrow const functions which are type-generic. */
199 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_TYPEGENERIC, ATTR_TYPEGENERIC, ATTR_NULL, \
200 ATTR_CONST_NOTHROW_LIST)
201 /* Nothrow const leaf functions which are type-generic. */
202 DEF_ATTR_TREE_LIST (ATTR_CONST_NOTHROW_TYPEGENERIC_LEAF, ATTR_TYPEGENERIC, ATTR_NULL, \
203 ATTR_CONST_NOTHROW_LEAF_LIST)
204 /* Nothrow pure functions whose pointer parameter(s) are all nonnull. */
205 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_NONNULL, ATTR_PURE, ATTR_NULL, \
206 ATTR_NOTHROW_NONNULL)
207 /* Nothrow pure leaf functions whose pointer parameter(s) are all nonnull. */
208 DEF_ATTR_TREE_LIST (ATTR_PURE_NOTHROW_NONNULL_LEAF, ATTR_PURE, ATTR_NULL, \
209 ATTR_NOTHROW_NONNULL_LEAF)
210 /* Nothrow malloc functions whose pointer parameter(s) are all nonnull. */
211 DEF_ATTR_TREE_LIST (ATTR_MALLOC_NOTHROW_NONNULL, ATTR_MALLOC, ATTR_NULL, \
212 ATTR_NOTHROW_NONNULL)
213 /* Nothrow malloc leaf functions whose pointer parameter(s) are all nonnull. */
214 DEF_ATTR_TREE_LIST (ATTR_MALLOC_NOTHROW_NONNULL_LEAF, ATTR_MALLOC, ATTR_NULL, \
215 ATTR_NOTHROW_NONNULL_LEAF)
217 /* Construct a tree for a format attribute. */
218 #define DEF_FORMAT_ATTRIBUTE(TYPE, FA, VALUES) \
219 DEF_ATTR_TREE_LIST (ATTR_##TYPE##_##VALUES, ATTR_NULL, \
220 ATTR_##TYPE, ATTR_LIST_##VALUES) \
221 DEF_ATTR_TREE_LIST (ATTR_FORMAT_##TYPE##_##VALUES, ATTR_FORMAT, \
222 ATTR_##TYPE##_##VALUES, ATTR_NONNULL_##FA)
223 #define DEF_FORMAT_ATTRIBUTE_NOTHROW(TYPE, FA, VALUES) \
224 DEF_ATTR_TREE_LIST (ATTR_##TYPE##_##VALUES, ATTR_NULL, \
225 ATTR_##TYPE, ATTR_LIST_##VALUES) \
226 DEF_ATTR_TREE_LIST (ATTR_FORMAT_##TYPE##_NOTHROW_##VALUES, ATTR_FORMAT,\
227 ATTR_##TYPE##_##VALUES, ATTR_NOTHROW_NONNULL_##FA)
228 #define DEF_FORMAT_ATTRIBUTE_BOTH(TYPE, FA, VALUES) \
229 DEF_ATTR_TREE_LIST (ATTR_##TYPE##_##VALUES, ATTR_NULL, \
230 ATTR_##TYPE, ATTR_LIST_##VALUES) \
231 DEF_ATTR_TREE_LIST (ATTR_FORMAT_##TYPE##_##VALUES, ATTR_FORMAT, \
232 ATTR_##TYPE##_##VALUES, ATTR_NONNULL_##FA) \
233 DEF_ATTR_TREE_LIST (ATTR_FORMAT_##TYPE##_NOTHROW_##VALUES, ATTR_FORMAT,\
234 ATTR_##TYPE##_##VALUES, ATTR_NOTHROW_NONNULL_##FA)
235 DEF_FORMAT_ATTRIBUTE(PRINTF,1,1_0)
236 DEF_FORMAT_ATTRIBUTE(PRINTF,1,1_2)
237 DEF_FORMAT_ATTRIBUTE_BOTH(PRINTF,2,2_0)
238 DEF_FORMAT_ATTRIBUTE_BOTH(PRINTF,2,2_3)
239 DEF_FORMAT_ATTRIBUTE_BOTH(PRINTF,3,3_0)
240 DEF_FORMAT_ATTRIBUTE_BOTH(PRINTF,3,3_4)
241 DEF_FORMAT_ATTRIBUTE_NOTHROW(PRINTF,4,4_0)
242 DEF_FORMAT_ATTRIBUTE_NOTHROW(PRINTF,4,4_5)
243 DEF_FORMAT_ATTRIBUTE_NOTHROW(PRINTF,5,5_0)
244 DEF_FORMAT_ATTRIBUTE_NOTHROW(PRINTF,5,5_6)
245 DEF_FORMAT_ATTRIBUTE(SCANF,1,1_0)
246 DEF_FORMAT_ATTRIBUTE(SCANF,1,1_2)
247 DEF_FORMAT_ATTRIBUTE_BOTH(SCANF,2,2_0)
248 DEF_FORMAT_ATTRIBUTE_BOTH(SCANF,2,2_3)
249 DEF_FORMAT_ATTRIBUTE_NOTHROW(STRFTIME,3,3_0)
250 DEF_FORMAT_ATTRIBUTE_NOTHROW(STRFMON,3,3_4)
251 #undef DEF_FORMAT_ATTRIBUTE
252 #undef DEF_FORMAT_ATTRIBUTE_NOTHROW
253 #undef DEF_FORMAT_ATTRIBUTE_BOTH
255 /* Transactional memory variants of the above. */
257 DEF_ATTR_TREE_LIST (ATTR_TM_NOTHROW_LIST,
258 ATTR_TM_REGPARM, ATTR_NULL, ATTR_NOTHROW_LIST)
259 DEF_ATTR_TREE_LIST (ATTR_TM_TMPURE_NOTHROW_LIST,
260 ATTR_TM_TMPURE, ATTR_NULL, ATTR_TM_NOTHROW_LIST)
261 DEF_ATTR_TREE_LIST (ATTR_TM_PURE_TMPURE_NOTHROW_LIST,
262 ATTR_PURE, ATTR_NULL, ATTR_TM_TMPURE_NOTHROW_LIST)
263 DEF_ATTR_TREE_LIST (ATTR_TM_NORETURN_NOTHROW_LIST,
264 ATTR_TM_REGPARM, ATTR_NULL, ATTR_NORETURN_NOTHROW_LIST)
265 DEF_ATTR_TREE_LIST (ATTR_TM_CONST_NOTHROW_LIST,
266 ATTR_TM_REGPARM, ATTR_NULL, ATTR_CONST_NOTHROW_LIST)
267 DEF_ATTR_TREE_LIST (ATTR_TM_NOTHROW_RT_LIST,
268 ATTR_RETURNS_TWICE, ATTR_NULL, ATTR_TM_NOTHROW_LIST)
270 /* Same attributes used for BUILT_IN_MALLOC except with TM_PURE thrown in. */
271 DEF_ATTR_TREE_LIST (ATTR_TMPURE_MALLOC_NOTHROW_LIST,
272 ATTR_TM_TMPURE, ATTR_NULL, ATTR_MALLOC_NOTHROW_LIST)
273 /* Same attributes used for BUILT_IN_FREE except with TM_PURE thrown in. */
274 DEF_ATTR_TREE_LIST (ATTR_TMPURE_NOTHROW_LIST,
275 ATTR_TM_TMPURE, ATTR_NULL, ATTR_NOTHROW_LIST)
277 DEF_ATTR_TREE_LIST (ATTR_TMPURE_NOTHROW_LEAF_LIST,
278 ATTR_TM_TMPURE, ATTR_NULL, ATTR_NOTHROW_LEAF_LIST)
279 DEF_ATTR_TREE_LIST (ATTR_TMPURE_NORETURN_NOTHROW_LEAF_LIST,
280 ATTR_TM_TMPURE, ATTR_NULL, ATTR_NORETURN_NOTHROW_LEAF_LIST)
282 /* Construct a tree for a format_arg attribute. */
283 #define DEF_FORMAT_ARG_ATTRIBUTE(FA) \
284 DEF_ATTR_TREE_LIST (ATTR_FORMAT_ARG_##FA, ATTR_FORMAT_ARG, \
285 ATTR_LIST_##FA, ATTR_NOTHROW_NONNULL_##FA)
286 DEF_FORMAT_ARG_ATTRIBUTE(1)
287 DEF_FORMAT_ARG_ATTRIBUTE(2)
288 #undef DEF_FORMAT_ARG_ATTRIBUTE