forked from KolibriOS/kolibrios
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
|
/*
|
||
|
|
* Simple math operations
|
||
|
|
* Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
|
||
|
|
*
|
||
|
|
* 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_AVR32_MATHOPS_H
|
||
|
|
#define AVCODEC_AVR32_MATHOPS_H
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
#include "config.h"
|
||
|
|
#include "libavutil/common.h"
|
||
|
|
|
||
|
|
#if HAVE_INLINE_ASM
|
||
|
|
|
||
|
|
#define MULL MULL
|
||
|
|
static inline av_const int MULL(int a, int b, unsigned shift)
|
||
|
|
{
|
||
|
|
union { int64_t x; int hl[2]; } x;
|
||
|
|
__asm__ ("muls.d %0, %1, %2 \n\t"
|
||
|
|
"lsr %0, %3 \n\t"
|
||
|
|
"or %0, %0, %m0<<%4 \n\t"
|
||
|
|
: "=r"(x) : "r"(b), "r"(a), "i"(shift), "i"(32-shift));
|
||
|
|
return x.hl[1];
|
||
|
|
}
|
||
|
|
|
||
|
|
#define MULH MULH
|
||
|
|
static inline av_const int MULH(int a, int b)
|
||
|
|
{
|
||
|
|
union { int64_t x; int hl[2]; } x;
|
||
|
|
__asm__ ("muls.d %0, %1, %2" : "=r"(x.x) : "r"(a), "r"(b));
|
||
|
|
return x.hl[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
#define MUL64 MUL64
|
||
|
|
static inline av_const int64_t MUL64(int a, int b)
|
||
|
|
{
|
||
|
|
int64_t x;
|
||
|
|
__asm__ ("muls.d %0, %1, %2" : "=r"(x) : "r"(a), "r"(b));
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline av_const int64_t MAC64(int64_t d, int a, int b)
|
||
|
|
{
|
||
|
|
__asm__ ("macs.d %0, %1, %2" : "+r"(d) : "r"(a), "r"(b));
|
||
|
|
return d;
|
||
|
|
}
|
||
|
|
#define MAC64(d, a, b) ((d) = MAC64(d, a, b))
|
||
|
|
#define MLS64(d, a, b) MAC64(d, -(a), b)
|
||
|
|
|
||
|
|
static inline av_const int MAC16(int d, int a, int b)
|
||
|
|
{
|
||
|
|
__asm__ ("machh.w %0, %1:b, %2:b" : "+r"(d) : "r"(a), "r"(b));
|
||
|
|
return d;
|
||
|
|
}
|
||
|
|
#define MAC16(d, a, b) ((d) = MAC16(d, a, b))
|
||
|
|
#define MLS16(d, a, b) MAC16(d, -(a), b)
|
||
|
|
|
||
|
|
#define MUL16 MUL16
|
||
|
|
static inline av_const int MUL16(int a, int b)
|
||
|
|
{
|
||
|
|
int d;
|
||
|
|
__asm__ ("mulhh.w %0, %1:b, %2:b" : "=r"(d) : "r"(a), "r"(b));
|
||
|
|
return d;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define mid_pred mid_pred
|
||
|
|
static inline av_const int mid_pred(int a, int b, int c)
|
||
|
|
{
|
||
|
|
int m;
|
||
|
|
__asm__ ("mov %0, %2 \n\t"
|
||
|
|
"cp.w %1, %2 \n\t"
|
||
|
|
"movgt %0, %1 \n\t"
|
||
|
|
"movgt %1, %2 \n\t"
|
||
|
|
"cp.w %1, %3 \n\t"
|
||
|
|
"movle %1, %3 \n\t"
|
||
|
|
"cp.w %0, %1 \n\t"
|
||
|
|
"movgt %0, %1 \n\t"
|
||
|
|
: "=&r"(m), "+r"(a)
|
||
|
|
: "r"(b), "r"(c));
|
||
|
|
return m;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* HAVE_INLINE_ASM */
|
||
|
|
|
||
|
|
#endif /* AVCODEC_AVR32_MATHOPS_H */
|