mirror of https://github.com/FFmpeg/FFmpeg.git
This will be useful to test more aggressively for failures to mark XMM registers as clobbered in Win64 builds, and prevent regressions thereof. Based on a patch by Ramiro Polla <ramiro.polla@gmail.com>pull/3/merge
Ronald S. Bultje
13 years ago
parent
89415b8e3f
commit
7e4d9d5d45
6 changed files with 199 additions and 0 deletions
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/*
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* check XMM registers for clobbers on Win64 |
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* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavcodec/avcodec.h" |
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#include "libavutil/x86/w64xmmtest.h" |
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wrap(avcodec_open2(AVCodecContext *avctx, |
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AVCodec *codec, |
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AVDictionary **options)) |
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{ |
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testxmmclobbers(avcodec_open2, avctx, codec, options); |
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} |
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wrap(avcodec_decode_audio4(AVCodecContext *avctx, |
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AVFrame *frame, |
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int *got_frame_ptr, |
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AVPacket *avpkt)) |
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{ |
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testxmmclobbers(avcodec_decode_audio4, avctx, frame, |
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got_frame_ptr, avpkt); |
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} |
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wrap(avcodec_decode_video2(AVCodecContext *avctx, |
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AVFrame *picture, |
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int *got_picture_ptr, |
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AVPacket *avpkt)) |
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{ |
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testxmmclobbers(avcodec_decode_video2, avctx, picture, |
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got_picture_ptr, avpkt); |
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} |
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wrap(avcodec_decode_subtitle2(AVCodecContext *avctx, |
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AVSubtitle *sub, |
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int *got_sub_ptr, |
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AVPacket *avpkt)) |
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{ |
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testxmmclobbers(avcodec_decode_subtitle2, avctx, sub, |
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got_sub_ptr, avpkt); |
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} |
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wrap(avcodec_encode_audio2(AVCodecContext *avctx, |
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AVPacket *avpkt, |
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const AVFrame *frame, |
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int *got_packet_ptr)) |
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{ |
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testxmmclobbers(avcodec_encode_audio2, avctx, avpkt, frame, |
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got_packet_ptr); |
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} |
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wrap(avcodec_encode_video(AVCodecContext *avctx, |
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uint8_t *buf, int buf_size, |
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const AVFrame *pict)) |
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{ |
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testxmmclobbers(avcodec_encode_video, avctx, buf, buf_size, pict); |
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} |
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wrap(avcodec_encode_subtitle(AVCodecContext *avctx, |
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uint8_t *buf, int buf_size, |
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const AVSubtitle *sub)) |
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{ |
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testxmmclobbers(avcodec_encode_subtitle, avctx, buf, buf_size, sub); |
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} |
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@ -0,0 +1,71 @@ |
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/*
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* check XMM registers for clobbers on Win64 |
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* Copyright (c) 2008 Ramiro Polla <ramiro.polla@gmail.com> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stdint.h> |
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#include <stdlib.h> |
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#include <stdarg.h> |
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#include "libavutil/bswap.h" |
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#define storexmmregs(mem) \ |
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__asm__ volatile( \
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"movups %%xmm6 , 0x00(%0)\n\t" \
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"movups %%xmm7 , 0x10(%0)\n\t" \
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"movups %%xmm8 , 0x20(%0)\n\t" \
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"movups %%xmm9 , 0x30(%0)\n\t" \
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"movups %%xmm10, 0x40(%0)\n\t" \
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"movups %%xmm11, 0x50(%0)\n\t" \
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"movups %%xmm12, 0x60(%0)\n\t" \
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"movups %%xmm13, 0x70(%0)\n\t" \
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"movups %%xmm14, 0x80(%0)\n\t" \
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"movups %%xmm15, 0x90(%0)\n\t" \
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:: "r"(mem) : "memory") |
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#define testxmmclobbers(func, ctx, ...) \ |
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uint64_t xmm[2][10][2]; \
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int ret; \
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storexmmregs(xmm[0]); \
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ret = __real_ ## func(ctx, __VA_ARGS__); \
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storexmmregs(xmm[1]); \
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if (memcmp(xmm[0], xmm[1], sizeof(xmm[0]))) { \
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int i; \
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av_log(ctx, AV_LOG_ERROR, \
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"XMM REGS CLOBBERED IN %s!\n", #func); \
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for (i = 0; i < 10; i ++) \
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if (xmm[0][i][0] != xmm[1][i][0] || \
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xmm[0][i][1] != xmm[1][i][1]) { \
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av_log(ctx, AV_LOG_ERROR, \
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"xmm%-2d = %016"PRIx64"%016"PRIx64"\n", \
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6 + i, av_bswap64(xmm[0][i][0]), \
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av_bswap64(xmm[0][i][1])); \
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av_log(ctx, AV_LOG_ERROR, \
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" -> %016"PRIx64"%016"PRIx64"\n", \
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av_bswap64(xmm[1][i][0]), \
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av_bswap64(xmm[1][i][1])); \
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} \
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abort(); \
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} \
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return ret |
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#define wrap(func) \ |
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int __real_ ## func; \
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int __wrap_ ## func; \
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int __wrap_ ## func |
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@ -0,0 +1,31 @@ |
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/*
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* check XMM registers for clobbers on Win64 |
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* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/x86/w64xmmtest.h" |
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#include "libswscale/swscale.h" |
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wrap(sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[], |
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const int srcStride[], int srcSliceY, int srcSliceH, |
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uint8_t *const dst[], const int dstStride[])) |
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{ |
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testxmmclobbers(sws_scale, c, srcSlice, srcStride, srcSliceY, |
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srcSliceH, dst, dstStride); |
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} |
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