repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
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 | #include <inttypes.h> | |
| 24 | #include <stdint.h> | |
| 25 | #include <stdlib.h> | |
| 26 | #include <stdarg.h> | |
| 27 | #include <string.h> | |
| 28 | ||
| 29 | #include "libavutil/bswap.h" | |
| 30 | ||
| 31 | #define storeneonregs(mem) \ | |
| 32 | __asm__ volatile( \ | |
| 33 | "stp d8, d9, [%0]\n\t" \ | |
| 34 | "stp d10, d11, [%0, #16]\n\t" \ | |
| 35 | "stp d12, d13, [%0, #32]\n\t" \ | |
| 36 | "stp d14, d15, [%0, #48]\n\t" \ | |
| 37 | :: "r"(mem) : "memory") | |
| 38 | ||
| 39 | #define testneonclobbers(func, ctx, ...) \ | |
| 40 | uint64_t neon[2][8]; \ | |
| 41 | int ret; \ | |
| 42 | storeneonregs(neon[0]); \ | |
| 43 | ret = __real_ ## func(ctx, __VA_ARGS__); \ | |
| 44 | storeneonregs(neon[1]); \ | |
| 45 | if (memcmp(neon[0], neon[1], sizeof(neon[0]))) { \ | |
| 46 | int i; \ | |
| 47 | av_log(ctx, AV_LOG_ERROR, \ | |
| 48 | "NEON REGS CLOBBERED IN %s!\n", #func); \ | |
| 49 | for (i = 0; i < 8; i ++) \ | |
| 50 | if (neon[0][i] != neon[1][i]) { \ | |
| 51 | av_log(ctx, AV_LOG_ERROR, \ | |
| 52 | "d%-2d = %016"PRIx64"\n", \ | |
| 53 | 8 + i, av_bswap64(neon[0][i])); \ | |
| 54 | av_log(ctx, AV_LOG_ERROR, \ | |
| 55 | " -> %016"PRIx64"\n", \ | |
| 56 | av_bswap64(neon[1][i])); \ | |
| 57 | } \ | |
| 58 | abort(); \ | |
| 59 | } \ | |
| 60 | return ret | |
| 61 | ||
| 62 | #define wrap(func) \ | |
| 63 | int __real_ ## func; \ | |
| 64 | int __wrap_ ## func; \ | |
| 65 | int __wrap_ ## func |