/* * 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 */