FFmpeg
w64xmmtest.h
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1 /*
2  * check XMM registers for clobbers on Win64
3  * Copyright (c) 2008 Ramiro Polla <ramiro.polla@gmail.com>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVUTIL_X86_W64XMMTEST_H
23 #define AVUTIL_X86_W64XMMTEST_H
24 
25 #include <inttypes.h>
26 #include <stdint.h>
27 #include <stdlib.h>
28 #include <stdarg.h>
29 #include <string.h>
30 
31 #include "libavutil/bswap.h"
32 
33 #define storexmmregs(mem) \
34  __asm__ volatile( \
35  "movups %%xmm6 , 0x00(%0)\n\t" \
36  "movups %%xmm7 , 0x10(%0)\n\t" \
37  "movups %%xmm8 , 0x20(%0)\n\t" \
38  "movups %%xmm9 , 0x30(%0)\n\t" \
39  "movups %%xmm10, 0x40(%0)\n\t" \
40  "movups %%xmm11, 0x50(%0)\n\t" \
41  "movups %%xmm12, 0x60(%0)\n\t" \
42  "movups %%xmm13, 0x70(%0)\n\t" \
43  "movups %%xmm14, 0x80(%0)\n\t" \
44  "movups %%xmm15, 0x90(%0)\n\t" \
45  :: "r"(mem) : "memory")
46 
47 #define testxmmclobbers(func, ctx, ...) \
48  uint64_t xmm[2][10][2]; \
49  int ret; \
50  storexmmregs(xmm[0]); \
51  ret = __real_ ## func(ctx, __VA_ARGS__); \
52  storexmmregs(xmm[1]); \
53  if (memcmp(xmm[0], xmm[1], sizeof(xmm[0]))) { \
54  int i; \
55  av_log(ctx, AV_LOG_ERROR, \
56  "XMM REGS CLOBBERED IN %s!\n", #func); \
57  for (i = 0; i < 10; i ++) \
58  if (xmm[0][i][0] != xmm[1][i][0] || \
59  xmm[0][i][1] != xmm[1][i][1]) { \
60  av_log(ctx, AV_LOG_ERROR, \
61  "xmm%-2d = %016"PRIx64"%016"PRIx64"\n", \
62  6 + i, av_bswap64(xmm[0][i][0]), \
63  av_bswap64(xmm[0][i][1])); \
64  av_log(ctx, AV_LOG_ERROR, \
65  " -> %016"PRIx64"%016"PRIx64"\n", \
66  av_bswap64(xmm[1][i][0]), \
67  av_bswap64(xmm[1][i][1])); \
68  } \
69  abort(); \
70  } \
71  return ret
72 
73 #define wrap(func) \
74 int __real_ ## func; \
75 int __wrap_ ## func; \
76 int __wrap_ ## func
77 
78 #endif /* AVUTIL_X86_W64XMMTEST_H */
byte swapping routines