/* * Copyright (c) 2012 *      MIPS Technologies, Inc., California. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its *    contributors may be used to endorse or promote products derived from *    this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED.  IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Author:  Nedeljko Babic (nbabic@mips.com) * * Math operations optimized for MIPS * * 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 */ /** * @file * Reference: libavcodec/celp_math.c */#include "config.h"#include "libavcodec/celp_math.h"#include "libavutil/mips/asmdefs.h" #if HAVE_INLINE_ASM#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6static float ff_dot_productf_mips(const float* a, const float* b,                                              int length){    float sum;    const float* a_end = a + length;     __asm__ volatile (        "mtc1   $zero,      %[sum]                              \n\t"        "blez   %[length],  ff_dot_productf_end%=               \n\t"        "ff_dot_productf_madd%=:                                \n\t"        "lwc1   $f2,        0(%[a])                             \n\t"        "lwc1   $f1,        0(%[b])                             \n\t"        PTR_ADDIU "%[a],    %[a],      4                        \n\t"        PTR_ADDIU "%[b],    %[b],      4                        \n\t"        "madd.s %[sum],     %[sum],    $f1, $f2                 \n\t"        "bne   %[a],        %[a_end],  ff_dot_productf_madd%=   \n\t"        "ff_dot_productf_end%=:                                 \n\t"         : [sum] "=&f" (sum), [a] "+r" (a), [b] "+r" (b)        : [a_end]"r"(a_end), [length] "r" (length)        : "$f1", "$f2", "memory"    );    return sum;}#endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */#endif /* HAVE_INLINE_ASM */ void ff_celp_math_init_mips(CELPMContext *c){#if HAVE_INLINE_ASM#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6    c->dot_productf = ff_dot_productf_mips;#endif#endif}