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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 | "vstm %0, {d8-d15}\n\t" \ | |
34 | :: "r"(mem) : "memory") | |
35 | ||
36 | #define testneonclobbers(func, ctx, ...) \ | |
37 | uint64_t neon[2][8]; \ | |
38 | int ret; \ | |
39 | storeneonregs(neon[0]); \ | |
40 | ret = __real_ ## func(ctx, __VA_ARGS__); \ | |
41 | storeneonregs(neon[1]); \ | |
42 | if (memcmp(neon[0], neon[1], sizeof(neon[0]))) { \ | |
43 | int i; \ | |
44 | av_log(ctx, AV_LOG_ERROR, \ | |
45 | "NEON REGS CLOBBERED IN %s!\n", #func); \ | |
46 | for (i = 0; i < 8; i ++) \ | |
47 | if (neon[0][i] != neon[1][i]) { \ | |
48 | av_log(ctx, AV_LOG_ERROR, \ | |
49 | "d%-2d = %016"PRIx64"\n", \ | |
50 | 8 + i, av_bswap64(neon[0][i])); \ | |
51 | av_log(ctx, AV_LOG_ERROR, \ | |
52 | " -> %016"PRIx64"\n", \ | |
53 | av_bswap64(neon[1][i])); \ | |
54 | } \ | |
55 | abort(); \ | |
56 | } \ | |
57 | return ret | |
58 | ||
59 | #define wrap(func) \ | |
60 | int __real_ ## func; \ | |
61 | int __wrap_ ## func; \ | |
62 | int __wrap_ ## func |