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New single instruction math operation header
Originally committed as revision 6291 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Barbato
parent
39e1b5cf8e
commit
99aed7c8fc
47
libavcodec/armv4l/mathops.h
Normal file
47
libavcodec/armv4l/mathops.h
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@ -0,0 +1,47 @@
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/*
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* simple math operations
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* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifdef FRAC_BITS
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# define MULL(a, b) \
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({ int lo, hi;\
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asm("smull %0, %1, %2, %3 \n\t"\
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"mov %0, %0, lsr %4\n\t"\
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"add %1, %0, %1, lsl %5\n\t"\
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: "=&r"(lo), "=&r"(hi)\
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: "r"(b), "r"(a), "i"(FRAC_BITS), "i"(32-FRAC_BITS));\
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hi; })
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#endif
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#define MULH(a, b) \
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({ int lo, hi;\
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asm ("smull %0, %1, %2, %3" : "=&r"(lo), "=&r"(hi) : "r"(b), "r"(a));\
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hi; })
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#if defined(HAVE_ARMV5TE)
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/* signed 16x16 -> 32 multiply add accumulate */
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# define MAC16(rt, ra, rb) \
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asm ("smlabb %0, %2, %3, %0" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
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/* signed 16x16 -> 32 multiply */
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# define MUL16(ra, rb) \
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({ int __rt;\
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asm ("smulbb %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb));
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__rt; })
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#endif
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39
libavcodec/i386/mathops.h
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39
libavcodec/i386/mathops.h
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@ -0,0 +1,39 @@
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/*
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* simple math operations
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* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifdef FRAC_BITS
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# define MULL(ra, rb) \
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({ int rt, dummy; asm (\
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"imull %3 \n\t"\
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"shrdl %4, %%edx, %%eax \n\t"\
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: "=a"(rt), "=d"(dummy)\
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: "a" (ra), "rm" (rb), "i"(FRAC_BITS));\
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rt; })
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#endif
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#define MULH(ra, rb) \
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({ int rt, dummy;\
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asm ("imull %3\n\t" : "=d"(rt), "=a"(dummy): "a" (ra), "rm" (rb));\
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rt; })
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#define MUL64(ra, rb) \
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({ int64_t rt;\
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asm ("imull %2\n\t" : "=A"(rt) : "a" (ra), "g" (rb));\
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rt; })
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67
libavcodec/mathops.h
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67
libavcodec/mathops.h
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@ -0,0 +1,67 @@
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/*
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* simple math operations
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* Copyright (c) 2001, 2002 Fabrice Bellard.
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* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef MATHOPS_H
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#define MATHOPS_H
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#ifdef ARCH_X86
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#include "i386/mathops.h"
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#elif defined(ARCH_ARMV4L)
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#include "armv4l/mathops.h"
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#elif defined(ARCH_PPC)
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#include "ppc/mathops.h"
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#endif
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/* generic implementation */
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#ifndef MULL
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# define MULL(a,b) (((int64_t)(a) * (int64_t)(b)) >> FRAC_BITS)
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#endif
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#ifndef MULH
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//gcc 3.4 creates an incredibly bloated mess out of this
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//# define MULH(a,b) (((int64_t)(a) * (int64_t)(b))>>32)
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static always_inline int MULH(int a, int b){
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return ((int64_t)(a) * (int64_t)(b))>>32;
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}
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#endif
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#ifndef MUL64
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# define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
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#endif
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/* signed 16x16 -> 32 multiply add accumulate */
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#ifndef MAC16
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# define MAC16(rt, ra, rb) rt += (ra) * (rb)
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#endif
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/* signed 16x16 -> 32 multiply */
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#ifndef MUL16
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# define MUL16(ra, rb) ((ra) * (rb))
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#endif
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#endif //MATHOPS_H
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31
libavcodec/ppc/mathops.h
Normal file
31
libavcodec/ppc/mathops.h
Normal file
@ -0,0 +1,31 @@
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/*
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* simple math operations
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* Copyright (c) 2001, 2002 Fabrice Bellard.
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* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if defined(ARCH_POWERPC_405)
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/* signed 16x16 -> 32 multiply add accumulate */
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# define MAC16(rt, ra, rb) \
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asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
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/* signed 16x16 -> 32 multiply */
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# define MUL16(ra, rb) \
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({ int __rt;
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asm ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb));
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__rt; })
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#endif
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