68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
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/*
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* Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
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* Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_MIPS_MATHOPS_H
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#define AVCODEC_MIPS_MATHOPS_H
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/common.h"
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#if HAVE_INLINE_ASM
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#if HAVE_LOONGSON3
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#define MULH MULH
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static inline av_const int MULH(int a, int b)
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{
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int c;
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__asm__ ("dmult %1, %2 \n\t"
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"mflo %0 \n\t"
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"dsrl %0, %0, 32 \n\t"
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: "=r"(c)
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: "r"(a),"r"(b)
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: "hi", "lo");
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return c;
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}
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#define mid_pred mid_pred
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static inline av_const int mid_pred(int a, int b, int c)
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{
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int t = b;
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__asm__ ("sgt $8, %1, %2 \n\t"
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"movn %0, %1, $8 \n\t"
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"movn %1, %2, $8 \n\t"
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"sgt $8, %1, %3 \n\t"
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"movz %1, %3, $8 \n\t"
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"sgt $8, %0, %1 \n\t"
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"movn %0, %1, $8 \n\t"
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: "+&r"(t),"+&r"(a)
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: "r"(b),"r"(c)
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: "$8");
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return t;
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}
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#endif /* HAVE_LOONGSON3 */
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#endif /* HAVE_INLINE_ASM */
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#endif /* AVCODEC_MIPS_MATHOPS_H */
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