77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
/*
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Copyright (C) 2004-2008 Grame
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __JackAtomic_WIN32__
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#define __JackAtomic_WIN32__
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#include "JackTypes.h"
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#ifndef __MINGW32__
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#ifdef __SMP__
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# define LOCK lock
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#else
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# define LOCK
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#endif
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#ifndef inline
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#define inline __inline
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#endif
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//----------------------------------------------------------------
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// CAS functions
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//----------------------------------------------------------------
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inline char CAS(volatile UInt32 value, UInt32 newvalue, volatile void * addr)
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{
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register char c;
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__asm {
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push ebx
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push esi
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mov esi, addr
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mov eax, value
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mov ebx, newvalue
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LOCK cmpxchg dword ptr [esi], ebx
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sete c
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pop esi
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pop ebx
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}
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return c;
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}
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#else
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#define LOCK "lock ; "
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static inline char CAS(volatile UInt32 value, UInt32 newvalue, volatile void* addr)
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{
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register char ret;
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__asm__ __volatile__ (
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"# CAS \n\t"
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LOCK "cmpxchg %2, (%1) \n\t"
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"sete %0 \n\t"
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: "=a" (ret)
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: "c" (addr), "d" (newvalue), "a" (value)
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);
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return ret;
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}
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#endif
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#endif
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