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.
79 lines
2.4 KiB
79 lines
2.4 KiB
/* |
|
* simple math operations |
|
* Copyright (c) 2001, 2002 Fabrice Bellard |
|
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al |
|
* |
|
* This file is part of Libav. |
|
* |
|
* Libav 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. |
|
* |
|
* Libav 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 Libav; 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 */
|
|
|