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62 lines
2.6 KiB
62 lines
2.6 KiB
/* |
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* check NEON registers for clobbering |
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* Copyright (c) 2008 Ramiro Polla <ramiro.polla@gmail.com> |
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* Copyright (c) 2013 Martin Storsjo |
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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 <inttypes.h> |
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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 <string.h> |
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#include "libavutil/bswap.h" |
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#define storeneonregs(mem) \ |
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__asm__ volatile( \ |
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"vstm %0, {d8-d15}\n\t" \ |
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:: "r"(mem) : "memory") |
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#define testneonclobbers(func, ctx, ...) \ |
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uint64_t neon[2][8]; \ |
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int ret; \ |
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storeneonregs(neon[0]); \ |
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ret = __real_ ## func(ctx, __VA_ARGS__); \ |
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storeneonregs(neon[1]); \ |
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if (memcmp(neon[0], neon[1], sizeof(neon[0]))) { \ |
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int i; \ |
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av_log(ctx, AV_LOG_ERROR, \ |
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"NEON REGS CLOBBERED IN %s!\n", #func); \ |
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for (i = 0; i < 8; i ++) \ |
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if (neon[0][i] != neon[1][i]) { \ |
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av_log(ctx, AV_LOG_ERROR, \ |
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"d%-2d = %016"PRIx64"\n", \ |
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8 + i, av_bswap64(neon[0][i])); \ |
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av_log(ctx, AV_LOG_ERROR, \ |
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" -> %016"PRIx64"\n", \ |
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av_bswap64(neon[1][i])); \ |
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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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