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32 lines
1.2 KiB
32 lines
1.2 KiB
18 years ago
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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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