/* * 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 MULHstatic 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_PPC64static 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 */