* simple math operations
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define AVCODEC_X86_MATHOPS_H
#include "config.h"
+
#include "libavutil/common.h"
+#include "libavutil/x86/asm.h"
+
+#if HAVE_INLINE_ASM
#if ARCH_X86_32
"imull %3 \n\t"
"shrdl %4, %%edx, %%eax \n\t"
:"=a"(rt), "=d"(dummy)
- :"a"(a), "rm"(b), "i"(shift)
+ :"a"(a), "rm"(b), "ci"((uint8_t)shift)
);
return rt;
}
__asm__ (
"imull %2"
:"=A"(rt)
- :"a"(a), "g"(b)
+ :"a"(a), "rm"(b)
);
return rt;
}
#endif /* ARCH_X86_32 */
-#if HAVE_CMOV
+#if HAVE_I686
/* median of 3 */
#define mid_pred mid_pred
static inline av_const int mid_pred(int a, int b, int c)
{
int i=b;
- __asm__ volatile(
+ __asm__ (
"cmp %2, %1 \n\t"
"cmovg %1, %0 \n\t"
"cmovg %2, %1 \n\t"
);
return i;
}
-#endif
-#if HAVE_CMOV
+#if HAVE_6REGS
#define COPY3_IF_LT(x, y, a, b, c, d)\
__asm__ volatile(\
"cmpl %0, %3 \n\t"\
: "+&r" (x), "+&r" (a), "+r" (c)\
: "r" (y), "r" (b), "r" (d)\
);
-#endif
+#endif /* HAVE_6REGS */
+
+#endif /* HAVE_I686 */
+
+#define MASK_ABS(mask, level) \
+ __asm__ ("cltd \n\t" \
+ "xorl %1, %0 \n\t" \
+ "subl %1, %0 \n\t" \
+ : "+a"(level), "=&d"(mask))
// avoid +32 for shift optimization (gcc should do that ...)
#define NEG_SSR32 NEG_SSR32
return a;
}
+#endif /* HAVE_INLINE_ASM */
#endif /* AVCODEC_X86_MATHOPS_H */