0,0 → 1,79 |
/* |
* simple math operations |
* Copyright (c) 2001, 2002 Fabrice Bellard |
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al |
* |
* 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_PPC_MATHOPS_H |
#define AVCODEC_PPC_MATHOPS_H |
|
#include <stdint.h> |
#include "config.h" |
#include "libavutil/common.h" |
|
#if HAVE_PPC4XX |
/* signed 16x16 -> 32 multiply add accumulate */ |
#define MAC16(rt, ra, rb) \ |
__asm__ ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb)); |
|
/* signed 16x16 -> 32 multiply */ |
#define MUL16(ra, rb) \ |
({ int __rt; \ |
__asm__ ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb)); \ |
__rt; }) |
#endif |
|
#define MULH MULH |
static inline av_const int MULH(int a, int b){ |
int r; |
__asm__ ("mulhw %0, %1, %2" : "=r"(r) : "r"(a), "r"(b)); |
return r; |
} |
|
#if !ARCH_PPC64 |
static inline av_const int64_t MAC64(int64_t d, int a, int b) |
{ |
union { uint64_t x; unsigned hl[2]; } x = { d }; |
int h, l; |
__asm__ ("mullw %3, %4, %5 \n\t" |
"mulhw %2, %4, %5 \n\t" |
"addc %1, %1, %3 \n\t" |
"adde %0, %0, %2 \n\t" |
: "+r"(x.hl[0]), "+r"(x.hl[1]), "=&r"(h), "=&r"(l) |
: "r"(a), "r"(b)); |
return x.x; |
} |
#define MAC64(d, a, b) ((d) = MAC64(d, a, b)) |
|
static inline av_const int64_t MLS64(int64_t d, int a, int b) |
{ |
union { uint64_t x; unsigned hl[2]; } x = { d }; |
int h, l; |
__asm__ ("mullw %3, %4, %5 \n\t" |
"mulhw %2, %4, %5 \n\t" |
"subfc %1, %3, %1 \n\t" |
"subfe %0, %2, %0 \n\t" |
: "+r"(x.hl[0]), "+r"(x.hl[1]), "=&r"(h), "=&r"(l) |
: "r"(a), "r"(b)); |
return x.x; |
} |
#define MLS64(d, a, b) ((d) = MLS64(d, a, b)) |
#endif |
|
#endif /* AVCODEC_PPC_MATHOPS_H */ |