1/* 2 * Simple math operations 3 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> 4 * 5 * This file is part of Libav. 6 * 7 * Libav is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * Libav is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with Libav; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#ifndef AVCODEC_AVR32_MATHOPS_H 23#define AVCODEC_AVR32_MATHOPS_H 24 25#include <stdint.h> 26#include "config.h" 27#include "libavutil/common.h" 28 29#if HAVE_INLINE_ASM 30 31#define MULL MULL 32static inline av_const int MULL(int a, int b, unsigned shift) 33{ 34 union { int64_t x; int hl[2]; } x; 35 __asm__ ("muls.d %0, %1, %2 \n\t" 36 "lsr %0, %3 \n\t" 37 "or %0, %0, %m0<<%4 \n\t" 38 : "=r"(x) : "r"(b), "r"(a), "i"(shift), "i"(32-shift)); 39 return x.hl[1]; 40} 41 42#define MULH MULH 43static inline av_const int MULH(int a, int b) 44{ 45 union { int64_t x; int hl[2]; } x; 46 __asm__ ("muls.d %0, %1, %2" : "=r"(x.x) : "r"(a), "r"(b)); 47 return x.hl[0]; 48} 49 50#define MUL64 MUL64 51static inline av_const int64_t MUL64(int a, int b) 52{ 53 int64_t x; 54 __asm__ ("muls.d %0, %1, %2" : "=r"(x) : "r"(a), "r"(b)); 55 return x; 56} 57 58static inline av_const int64_t MAC64(int64_t d, int a, int b) 59{ 60 __asm__ ("macs.d %0, %1, %2" : "+r"(d) : "r"(a), "r"(b)); 61 return d; 62} 63#define MAC64(d, a, b) ((d) = MAC64(d, a, b)) 64#define MLS64(d, a, b) MAC64(d, -(a), b) 65 66static inline av_const int MAC16(int d, int a, int b) 67{ 68 __asm__ ("machh.w %0, %1:b, %2:b" : "+r"(d) : "r"(a), "r"(b)); 69 return d; 70} 71#define MAC16(d, a, b) ((d) = MAC16(d, a, b)) 72#define MLS16(d, a, b) MAC16(d, -(a), b) 73 74#define MUL16 MUL16 75static inline av_const int MUL16(int a, int b) 76{ 77 int d; 78 __asm__ ("mulhh.w %0, %1:b, %2:b" : "=r"(d) : "r"(a), "r"(b)); 79 return d; 80} 81 82#define mid_pred mid_pred 83static inline av_const int mid_pred(int a, int b, int c) 84{ 85 int m; 86 __asm__ ("mov %0, %2 \n\t" 87 "cp.w %1, %2 \n\t" 88 "movgt %0, %1 \n\t" 89 "movgt %1, %2 \n\t" 90 "cp.w %1, %3 \n\t" 91 "movle %1, %3 \n\t" 92 "cp.w %0, %1 \n\t" 93 "movgt %0, %1 \n\t" 94 : "=&r"(m), "+r"(a) 95 : "r"(b), "r"(c)); 96 return m; 97} 98 99#endif /* HAVE_INLINE_ASM */ 100 101#endif /* AVCODEC_AVR32_MATHOPS_H */ 102