[deb_ffmpeg.git] / ffmpeg / libavutil / aarch64 / neontest.h

/*
 * check NEON registers for clobbering
 * Copyright (c) 2008 Ramiro Polla <ramiro.polla@gmail.com>
 * Copyright (c) 2013 Martin Storsjo
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg 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.
 *
 * FFmpeg 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 FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <inttypes.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>

#include "libavutil/bswap.h"

#define storeneonregs(mem)                \
    __asm__ volatile(                     \
        "stp d8,  d9,  [%0]\n\t"          \
        "stp d10, d11, [%0, #16]\n\t"     \
        "stp d12, d13, [%0, #32]\n\t"     \
        "stp d14, d15, [%0, #48]\n\t"     \
        :: "r"(mem) : "memory")

#define testneonclobbers(func, ctx, ...)                        \
    uint64_t neon[2][8];                                        \
    int ret;                                                    \
    storeneonregs(neon[0]);                                     \
    ret = __real_ ## func(ctx, __VA_ARGS__);                    \
    storeneonregs(neon[1]);                                     \
    if (memcmp(neon[0], neon[1], sizeof(neon[0]))) {            \
        int i;                                                  \
        av_log(ctx, AV_LOG_ERROR,                               \
               "NEON REGS CLOBBERED IN %s!\n", #func);          \
        for (i = 0; i < 8; i ++)                                \
            if (neon[0][i] != neon[1][i]) {                     \
                av_log(ctx, AV_LOG_ERROR,                       \
                       "d%-2d = %016"PRIx64"\n",                \
                       8 + i, av_bswap64(neon[0][i]));          \
                av_log(ctx, AV_LOG_ERROR,                       \
                       "   -> %016"PRIx64"\n",                  \
                       av_bswap64(neon[1][i]));                 \
            }                                                   \
        abort();                                                \
    }                                                           \
    return ret

#define wrap(func)      \
int __real_ ## func;    \
int __wrap_ ## func;    \
int __wrap_ ## func
Commit	Line	Data
	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