all: Add missing header guards
[ffmpeg.git] / libavutil / arm / neontest.h
1 /*
2  * check NEON registers for clobbering
3  * Copyright (c) 2008 Ramiro Polla <ramiro.polla@gmail.com>
4  * Copyright (c) 2013 Martin Storsjo
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22
23 #ifndef AVUTIL_ARM_NEONTEST_H
24 #define AVUTIL_ARM_NEONTEST_H
25
26 #include <inttypes.h>
27 #include <stdint.h>
28 #include <stdlib.h>
29 #include <stdarg.h>
30 #include <string.h>
31
32 #include "libavutil/bswap.h"
33
34 #define storeneonregs(mem)                \
35     __asm__ volatile(                     \
36         "vstm %0, {d8-d15}\n\t"           \
37         :: "r"(mem) : "memory")
38
39 #define testneonclobbers(func, ctx, ...)                        \
40     uint64_t neon[2][8];                                        \
41     int ret;                                                    \
42     storeneonregs(neon[0]);                                     \
43     ret = __real_ ## func(ctx, __VA_ARGS__);                    \
44     storeneonregs(neon[1]);                                     \
45     if (memcmp(neon[0], neon[1], sizeof(neon[0]))) {            \
46         int i;                                                  \
47         av_log(ctx, AV_LOG_ERROR,                               \
48                "NEON REGS CLOBBERED IN %s!\n", #func);          \
49         for (i = 0; i < 8; i ++)                                \
50             if (neon[0][i] != neon[1][i]) {                     \
51                 av_log(ctx, AV_LOG_ERROR,                       \
52                        "d%-2d = %016"PRIx64"\n",                \
53                        8 + i, av_bswap64(neon[0][i]));          \
54                 av_log(ctx, AV_LOG_ERROR,                       \
55                        "   -> %016"PRIx64"\n",                  \
56                        av_bswap64(neon[1][i]));                 \
57             }                                                   \
58         abort();                                                \
59     }                                                           \
60     return ret
61
62 #define wrap(func)      \
63 int __real_ ## func;    \
64 int __wrap_ ## func;    \
65 int __wrap_ ## func
66
67 #endif /* AVUTIL_ARM_NEONTEST_H */