1 /* 2 * check NEON registers for clobbering 3 * Copyright (c) 2008 Ramiro Polla <ramiro.polla@gmail.com> 4 * Copyright (c) 2013 Martin Storsjo 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23 #ifndef AVUTIL_AARCH64_NEONTEST_H 24 #define AVUTIL_AARCH64_NEONTEST_H 25 26 #include <inttypes.h> 27 #include <stdint.h> 28 #include <stdlib.h> 29 #include <stdarg.h> 30 #include <string.h> 31 32 #include "libavutil/bswap.h" 33 34 #define storeneonregs(mem) \ 35 __asm__ volatile( \ 36 "stp d8, d9, [%0]\n\t" \ 37 "stp d10, d11, [%0, #16]\n\t" \ 38 "stp d12, d13, [%0, #32]\n\t" \ 39 "stp d14, d15, [%0, #48]\n\t" \ 40 :: "r"(mem) : "memory") 41 42 #define testneonclobbers(func, ctx, ...) \ 43 uint64_t neon[2][8]; \ 44 int ret; \ 45 storeneonregs(neon[0]); \ 46 ret = __real_ ## func(ctx, __VA_ARGS__); \ 47 storeneonregs(neon[1]); \ 48 if (memcmp(neon[0], neon[1], sizeof(neon[0]))) { \ 49 int i; \ 50 av_log(ctx, AV_LOG_ERROR, \ 51 "NEON REGS CLOBBERED IN %s!\n", #func); \ 52 for (i = 0; i < 8; i ++) \ 53 if (neon[0][i] != neon[1][i]) { \ 54 av_log(ctx, AV_LOG_ERROR, \ 55 "d%-2d = %016"PRIx64"\n", \ 56 8 + i, av_bswap64(neon[0][i])); \ 57 av_log(ctx, AV_LOG_ERROR, \ 58 " -> %016"PRIx64"\n", \ 59 av_bswap64(neon[1][i])); \ 60 } \ 61 abort(); \ 62 } \ 63 return ret 64 65 #define wrap(func) \ 66 int __real_ ## func; \ 67 int __wrap_ ## func; \ 68 int __wrap_ ## func 69 70 #endif /* AVUTIL_AARCH64_NEONTEST_H */ 71