| /* |
| * 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 |
| |
| #if CONFIG_MPEGAUDIO_HP |
| #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; }) |
| #else |
| #define MULH(X,Y) ({ int xxo; \ |
| __asm__ ( \ |
| "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; }) |
| #endif |
| |
| /* 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 */ |