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-rw-r--r--libavcodec/x86/mathops.h43
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diff --git a/libavcodec/x86/mathops.h b/libavcodec/x86/mathops.h
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+/*
+ * simple math operations
+ * 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_X86_MATHOPS_H
+#define AVCODEC_X86_MATHOPS_H
+
+#define MULL(ra, rb, shift) \
+ ({ int rt, dummy; __asm__ (\
+ "imull %3 \n\t"\
+ "shrdl %4, %%edx, %%eax \n\t"\
+ : "=a"(rt), "=d"(dummy)\
+ : "a" ((int)ra), "rm" ((int)rb), "i"(shift));\
+ rt; })
+
+#define MULH(ra, rb) \
+ ({ int rt, dummy;\
+ __asm__ ("imull %3\n\t" : "=d"(rt), "=a"(dummy): "a" ((int)ra), "rm" ((int)rb));\
+ rt; })
+
+#define MUL64(ra, rb) \
+ ({ int64_t rt;\
+ __asm__ ("imull %2\n\t" : "=A"(rt) : "a" ((int)ra), "g" ((int)rb));\
+ rt; })
+
+#endif /* AVCODEC_X86_MATHOPS_H */