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77 lines
2.4 KiB
77 lines
2.4 KiB
/* |
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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 file is part of FFmpeg. |
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* |
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* FFmpeg 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 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg 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 FFmpeg; 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 AVCODEC_PPC_MATHOPS_H |
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#define AVCODEC_PPC_MATHOPS_H |
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#include "config.h" |
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#if HAVE_PPC4XX |
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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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#define MULH MULH |
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static inline av_const int MULH(int a, int b){ |
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int r; |
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__asm__ ("mulhw %0, %1, %2" : "=r"(r) : "r"(a), "r"(b)); |
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return r; |
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} |
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#if !ARCH_PPC64 |
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static inline av_const int64_t MAC64(int64_t d, int a, int b) |
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{ |
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union { uint64_t x; unsigned hl[2]; } x = { d }; |
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int h, l; |
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__asm__ ("mullw %3, %4, %5 \n\t" |
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"mulhw %2, %4, %5 \n\t" |
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"addc %1, %1, %3 \n\t" |
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"adde %0, %0, %2 \n\t" |
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: "+r"(x.hl[0]), "+r"(x.hl[1]), "=&r"(h), "=&r"(l) |
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: "r"(a), "r"(b)); |
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return x.x; |
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} |
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#define MAC64(d, a, b) ((d) = MAC64(d, a, b)) |
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static inline av_const int64_t MLS64(int64_t d, int a, int b) |
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{ |
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union { uint64_t x; unsigned hl[2]; } x = { d }; |
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int h, l; |
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__asm__ ("mullw %3, %4, %5 \n\t" |
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"mulhw %2, %4, %5 \n\t" |
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"subfc %1, %3, %1 \n\t" |
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"subfe %0, %2, %0 \n\t" |
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: "+r"(x.hl[0]), "+r"(x.hl[1]), "=&r"(h), "=&r"(l) |
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: "r"(a), "r"(b)); |
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return x.x; |
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} |
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#define MLS64(d, a, b) ((d) = MLS64(d, a, b)) |
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#endif |
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#endif /* AVCODEC_PPC_MATHOPS_H */
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