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| author | Ronald S. Bultje <rsbultje@gmail.com> | 2012-02-02 11:48:13 -0800 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2012-02-02 12:00:48 -0800 |
| commit | 7e4d9d5d456916f51cb40ef646fad5b0a467f4b1 (patch) | |
| tree | a03a9432b4a55cbc90f09ad900de72cb7f43124f /libavutil | |
| parent | 89415b8e3fb83d67fdc518323cc364aa74ec2af2 (diff) | |
| download | ffmpeg-7e4d9d5d456916f51cb40ef646fad5b0a467f4b1.tar.gz | |
win64: add a XMM clobber test configure option.
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>
Diffstat (limited to 'libavutil')
| -rw-r--r-- | libavutil/x86/w64xmmtest.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/libavutil/x86/w64xmmtest.h b/libavutil/x86/w64xmmtest.h new file mode 100644 index 0000000000..1c1ded86ec --- /dev/null +++ b/libavutil/x86/w64xmmtest.h @@ -0,0 +1,71 @@ +/* + * check XMM registers for clobbers on Win64 + * Copyright (c) 2008 Ramiro Polla <ramiro.polla@gmail.com> + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> +#include <stdlib.h> +#include <stdarg.h> + +#include "libavutil/bswap.h" + +#define storexmmregs(mem) \ + __asm__ volatile( \ + "movups %%xmm6 , 0x00(%0)\n\t" \ + "movups %%xmm7 , 0x10(%0)\n\t" \ + "movups %%xmm8 , 0x20(%0)\n\t" \ + "movups %%xmm9 , 0x30(%0)\n\t" \ + "movups %%xmm10, 0x40(%0)\n\t" \ + "movups %%xmm11, 0x50(%0)\n\t" \ + "movups %%xmm12, 0x60(%0)\n\t" \ + "movups %%xmm13, 0x70(%0)\n\t" \ + "movups %%xmm14, 0x80(%0)\n\t" \ + "movups %%xmm15, 0x90(%0)\n\t" \ + :: "r"(mem) : "memory") + +#define testxmmclobbers(func, ctx, ...) \ + uint64_t xmm[2][10][2]; \ + int ret; \ + storexmmregs(xmm[0]); \ + ret = __real_ ## func(ctx, __VA_ARGS__); \ + storexmmregs(xmm[1]); \ + if (memcmp(xmm[0], xmm[1], sizeof(xmm[0]))) { \ + int i; \ + av_log(ctx, AV_LOG_ERROR, \ + "XMM REGS CLOBBERED IN %s!\n", #func); \ + for (i = 0; i < 10; i ++) \ + if (xmm[0][i][0] != xmm[1][i][0] || \ + xmm[0][i][1] != xmm[1][i][1]) { \ + av_log(ctx, AV_LOG_ERROR, \ + "xmm%-2d = %016"PRIx64"%016"PRIx64"\n", \ + 6 + i, av_bswap64(xmm[0][i][0]), \ + av_bswap64(xmm[0][i][1])); \ + av_log(ctx, AV_LOG_ERROR, \ + " -> %016"PRIx64"%016"PRIx64"\n", \ + av_bswap64(xmm[1][i][0]), \ + av_bswap64(xmm[1][i][1])); \ + } \ + abort(); \ + } \ + return ret + +#define wrap(func) \ +int __real_ ## func; \ +int __wrap_ ## func; \ +int __wrap_ ## func |