/* * simple math operations * * Copyright (C) 2007 Marc Hoffman <mmhoffm@gmail.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_BFIN_MATHOPS_H #define AVCODEC_BFIN_MATHOPS_H #include "config.h" #define MULH(X,Y) ({ int xxo; \ __asm__ ( \ "a1 = %2.L * %1.L (FU);\n\t" \ "a1 = a1 >> 16;\n\t" \ "a1 += %2.H * %1.L (IS,M);\n\t" \ "a0 = %1.H * %2.H, a1+= %1.H * %2.L (IS,M);\n\t"\ "a1 = a1 >>> 16;\n\t" \ "%0 = (a0 += a1);\n\t" \ : "=d" (xxo) : "d" (X), "d" (Y) : "A0","A1"); xxo; }) /* signed 16x16 -> 32 multiply */ #define MUL16(a, b) ({ int xxo; \ __asm__ ( \ "%0 = %1.l*%2.l (is);\n\t" \ : "=W" (xxo) : "d" (a), "d" (b) : "A1"); \ xxo; }) #endif /* AVCODEC_BFIN_MATHOPS_H */