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New single instruction math operation header

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Originally committed as revision 6291 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Barbato 2006-09-19 22:22:29 +00:00
parent 39e1b5cf8e
commit 99aed7c8fc
4 changed files with 184 additions and 0 deletions
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47
libavcodec/armv4l/mathops.h Normal file
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/*
* simple math operations
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef FRAC_BITS
# define MULL(a, b) \
({ int lo, hi;\
asm("smull %0, %1, %2, %3 \n\t"\
"mov %0, %0, lsr %4\n\t"\
"add %1, %0, %1, lsl %5\n\t"\
: "=&r"(lo), "=&r"(hi)\
: "r"(b), "r"(a), "i"(FRAC_BITS), "i"(32-FRAC_BITS));\
hi; })
#endif
#define MULH(a, b) \
({ int lo, hi;\
asm ("smull %0, %1, %2, %3" : "=&r"(lo), "=&r"(hi) : "r"(b), "r"(a));\
hi; })
#if defined(HAVE_ARMV5TE)
/* signed 16x16 -> 32 multiply add accumulate */
# define MAC16(rt, ra, rb) \
asm ("smlabb %0, %2, %3, %0" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
/* signed 16x16 -> 32 multiply */
# define MUL16(ra, rb) \
({ int __rt;\
asm ("smulbb %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb));
__rt; })
#endif

39
libavcodec/i386/mathops.h Normal file
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/*
* simple math operations
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef FRAC_BITS
# define MULL(ra, rb) \
({ int rt, dummy; asm (\
"imull %3 \n\t"\
"shrdl %4, %%edx, %%eax \n\t"\
: "=a"(rt), "=d"(dummy)\
: "a" (ra), "rm" (rb), "i"(FRAC_BITS));\
rt; })
#endif
#define MULH(ra, rb) \
({ int rt, dummy;\
asm ("imull %3\n\t" : "=d"(rt), "=a"(dummy): "a" (ra), "rm" (rb));\
rt; })
#define MUL64(ra, rb) \
({ int64_t rt;\
asm ("imull %2\n\t" : "=A"(rt) : "a" (ra), "g" (rb));\
rt; })

67
libavcodec/mathops.h Normal file
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/*
* simple math operations
* Copyright (c) 2001, 2002 Fabrice Bellard.
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef MATHOPS_H
#define MATHOPS_H
#ifdef ARCH_X86
#include "i386/mathops.h"
#elif defined(ARCH_ARMV4L)
#include "armv4l/mathops.h"
#elif defined(ARCH_PPC)
#include "ppc/mathops.h"
#endif
/* generic implementation */
#ifndef MULL
# define MULL(a,b) (((int64_t)(a) * (int64_t)(b)) >> FRAC_BITS)
#endif
#ifndef MULH
//gcc 3.4 creates an incredibly bloated mess out of this
//# define MULH(a,b) (((int64_t)(a) * (int64_t)(b))>>32)
static always_inline int MULH(int a, int b){
return ((int64_t)(a) * (int64_t)(b))>>32;
}
#endif
#ifndef MUL64
# define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
#endif
/* signed 16x16 -> 32 multiply add accumulate */
#ifndef MAC16
# define MAC16(rt, ra, rb) rt += (ra) * (rb)
#endif
/* signed 16x16 -> 32 multiply */
#ifndef MUL16
# define MUL16(ra, rb) ((ra) * (rb))
#endif
#endif //MATHOPS_H

31
libavcodec/ppc/mathops.h Normal file
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/*
* simple math operations
* Copyright (c) 2001, 2002 Fabrice Bellard.
* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if defined(ARCH_POWERPC_405)
/* signed 16x16 -> 32 multiply add accumulate */
# define MAC16(rt, ra, rb) \
asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
/* signed 16x16 -> 32 multiply */
# define MUL16(ra, rb) \
({ int __rt;
asm ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb));
__rt; })
#endif