mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118 lines
3.1 KiB
118 lines
3.1 KiB
/* |
|
* Copyright (c) 2009 Mans Rullgard <mans@mansr.com> |
|
* Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn> |
|
* |
|
* 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 |
|
*/ |
|
|
|
#ifndef AVCODEC_MIPS_MATHOPS_H |
|
#define AVCODEC_MIPS_MATHOPS_H |
|
|
|
#include <stdint.h> |
|
#include "config.h" |
|
#include "libavutil/common.h" |
|
|
|
#if HAVE_INLINE_ASM |
|
|
|
#if HAVE_LOONGSON3 |
|
|
|
#define MULH MULH |
|
static inline av_const int MULH(int a, int b) |
|
{ |
|
int c; |
|
__asm__ ("dmult %1, %2 \n\t" |
|
"mflo %0 \n\t" |
|
"dsrl %0, %0, 32 \n\t" |
|
: "=r"(c) |
|
: "r"(a),"r"(b) |
|
: "hi", "lo"); |
|
return c; |
|
} |
|
|
|
#define UMULH UMULH |
|
static inline av_const unsigned UMULH(unsigned a, unsigned b) |
|
{ |
|
unsigned c; |
|
__asm__ ("dmultu %1, %2 \n\t" |
|
"mflo %0 \n\t" |
|
"dsrl %0, %0, 32 \n\t" |
|
: "=r"(c) |
|
: "r"(a),"r"(b) |
|
: "hi", "lo"); |
|
return c; |
|
} |
|
|
|
#define mid_pred mid_pred |
|
static inline av_const int mid_pred(int a, int b, int c) |
|
{ |
|
int t = b; |
|
__asm__ ("sgt $8, %1, %2 \n\t" |
|
"movn %0, %1, $8 \n\t" |
|
"movn %1, %2, $8 \n\t" |
|
"sgt $8, %1, %3 \n\t" |
|
"movz %1, %3, $8 \n\t" |
|
"sgt $8, %0, %1 \n\t" |
|
"movn %0, %1, $8 \n\t" |
|
: "+&r"(t),"+&r"(a) |
|
: "r"(b),"r"(c) |
|
: "$8"); |
|
return t; |
|
} |
|
|
|
#define ff_sqrt ff_sqrt |
|
static inline av_const unsigned int ff_sqrt(unsigned int a) |
|
{ |
|
unsigned int b; |
|
|
|
__asm__ ("ctc1 %1, $f0 \n\t" |
|
"sqrt.s $f2, $f0 \n\t" |
|
"cvt.w.s $f0, $f2 \n\t" |
|
"cfc1 %0, $f0 \n\t" |
|
: "=r"(b) |
|
: "r"(a)); |
|
return b; |
|
} |
|
|
|
static inline av_const int64_t MAC64(int64_t d, int a, int b) |
|
{ |
|
int64_t m; |
|
__asm__ ("dmult %2, %3 \n\t" |
|
"mflo %1 \n\t" |
|
"daddu %0, %0, %1 \n\t" |
|
: "+r"(d), "=&r"(m) : "r"(a), "r"(b) |
|
: "hi", "lo"); |
|
return d; |
|
} |
|
#define MAC64(d, a, b) ((d) = MAC64(d, a, b)) |
|
|
|
static inline av_const int64_t MLS64(int64_t d, int a, int b) |
|
{ |
|
int64_t m; |
|
__asm__ ("dmult %2, %3 \n\t" |
|
"mflo %1 \n\t" |
|
"dsubu %0, %0, %1 \n\t" |
|
: "+r"(d), "=&r"(m) : "r"(a), "r"(b) |
|
: "hi", "lo"); |
|
return d; |
|
} |
|
#define MLS64(d, a, b) ((d) = MLS64(d, a, b)) |
|
|
|
#endif /* HAVE_LOONGSON3 */ |
|
|
|
#endif /* HAVE_INLINE_ASM */ |
|
|
|
#endif /* AVCODEC_MIPS_MATHOPS_H */
|
|
|