xref: /freebsd/contrib/processor-trace/include/pt_compiler.h (revision 74fe6c29fb7eef3418d7919dcd41dc1a04a982a1)
1*74fe6c29SRuslan Bukin /*
2*74fe6c29SRuslan Bukin  * Copyright (c) 2017-2018, Intel Corporation
3*74fe6c29SRuslan Bukin  *
4*74fe6c29SRuslan Bukin  * Redistribution and use in source and binary forms, with or without
5*74fe6c29SRuslan Bukin  * modification, are permitted provided that the following conditions are met:
6*74fe6c29SRuslan Bukin  *
7*74fe6c29SRuslan Bukin  *  * Redistributions of source code must retain the above copyright notice,
8*74fe6c29SRuslan Bukin  *    this list of conditions and the following disclaimer.
9*74fe6c29SRuslan Bukin  *  * Redistributions in binary form must reproduce the above copyright notice,
10*74fe6c29SRuslan Bukin  *    this list of conditions and the following disclaimer in the documentation
11*74fe6c29SRuslan Bukin  *    and/or other materials provided with the distribution.
12*74fe6c29SRuslan Bukin  *  * Neither the name of Intel Corporation nor the names of its contributors
13*74fe6c29SRuslan Bukin  *    may be used to endorse or promote products derived from this software
14*74fe6c29SRuslan Bukin  *    without specific prior written permission.
15*74fe6c29SRuslan Bukin  *
16*74fe6c29SRuslan Bukin  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17*74fe6c29SRuslan Bukin  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*74fe6c29SRuslan Bukin  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*74fe6c29SRuslan Bukin  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20*74fe6c29SRuslan Bukin  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21*74fe6c29SRuslan Bukin  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22*74fe6c29SRuslan Bukin  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23*74fe6c29SRuslan Bukin  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24*74fe6c29SRuslan Bukin  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25*74fe6c29SRuslan Bukin  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26*74fe6c29SRuslan Bukin  * POSSIBILITY OF SUCH DAMAGE.
27*74fe6c29SRuslan Bukin  */
28*74fe6c29SRuslan Bukin 
29*74fe6c29SRuslan Bukin #ifndef PT_COMPILER_H
30*74fe6c29SRuslan Bukin #define PT_COMPILER_H
31*74fe6c29SRuslan Bukin 
32*74fe6c29SRuslan Bukin 
33*74fe6c29SRuslan Bukin /* Both the relevant Clang and GCC versions support this. */
34*74fe6c29SRuslan Bukin #if !defined(__has_attribute)
35*74fe6c29SRuslan Bukin #  define __has_attribute(attr) 0
36*74fe6c29SRuslan Bukin #endif
37*74fe6c29SRuslan Bukin 
38*74fe6c29SRuslan Bukin #if !defined(fallthrough)
39*74fe6c29SRuslan Bukin #  if (__has_attribute(fallthrough))
40*74fe6c29SRuslan Bukin #    define fallthrough __attribute__((fallthrough))
41*74fe6c29SRuslan Bukin #  else
42*74fe6c29SRuslan Bukin #    define fallthrough /* Fall through. */
43*74fe6c29SRuslan Bukin #  endif
44*74fe6c29SRuslan Bukin #endif /* !defined(fallthrough) */
45*74fe6c29SRuslan Bukin 
46*74fe6c29SRuslan Bukin 
47*74fe6c29SRuslan Bukin #endif /* PT_COMPILER_H */
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