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)      \
74int __real_ ## func;    \
75int __wrap_ ## func;    \
76int __wrap_ ## func
77
78#endif /* AVUTIL_X86_W64XMMTEST_H */
79