68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
/* winbase.h
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Copyright 2002, 2003, 2004 Red Hat, Inc.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include_next "winbase.h"
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#ifndef _WINBASE2_H
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#define _WINBASE2_H
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extern __inline__ long
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ilockincr (long *m)
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{
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register int __res;
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__asm__ __volatile__ ("\n\
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movl $1,%0\n\
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lock xadd %0,%1\n\
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inc %0\n\
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": "=a" (__res), "=m" (*m): "m" (m): "cc");
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return __res;
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}
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extern __inline__ long
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ilockdecr (long *m)
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{
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register int __res;
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__asm__ __volatile__ ("\n\
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movl $0xffffffff,%0\n\
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lock xadd %0,%1\n\
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dec %0\n\
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": "=a" (__res), "=m" (*m): "m" (m): "cc");
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return __res;
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}
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extern __inline__ long
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ilockexch (long *t, long v)
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{
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register int __res;
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__asm__ __volatile__ ("\n\
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1: lock cmpxchgl %3,(%1)\n\
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jne 1b\n\
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": "=a" (__res), "=q" (t): "1" (t), "q" (v), "0" (*t): "cc");
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return __res;
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}
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extern __inline__ long
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ilockcmpexch (long *t, long v, long c)
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{
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register int __res;
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__asm__ __volatile__ ("\n\
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lock cmpxchgl %3,(%1)\n\
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": "=a" (__res), "=q" (t) : "1" (t), "q" (v), "0" (c): "cc");
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return __res;
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}
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#undef InterlockedIncrement
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#define InterlockedIncrement ilockincr
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#undef InterlockedDecrement
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#define InterlockedDecrement ilockdecr
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#undef InterlockedExchange
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#define InterlockedExchange ilockexch
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#undef InterlockedCompareExchange
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#define InterlockedCompareExchange ilockcmpexch
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#endif /*_WINBASE2_H*/
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