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/* winbase.h
Copyright 2002, 2003, 2004, 2008 Red Hat, Inc.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include_next "winbase.h"
#ifndef _WINBASE2_H
#define _WINBASE2_H
extern __inline__ long
ilockincr (volatile long *m)
{
register int __res;
__asm__ __volatile__ ("\n\
movl $1,%0\n\
lock xadd %0,%1\n\
inc %0\n\
": "=&r" (__res), "=m" (*m): "m" (*m): "cc");
return __res;
}
extern __inline__ long
ilockdecr (volatile long *m)
{
register int __res;
__asm__ __volatile__ ("\n\
movl $0xffffffff,%0\n\
lock xadd %0,%1\n\
dec %0\n\
": "=&r" (__res), "=m" (*m): "m" (*m): "cc");
return __res;
}
extern __inline__ long
ilockexch (volatile long *t, long v)
{
return
({
register long ret __asm ("%eax");
__asm __volatile ("\n"
"1: lock cmpxchgl %2, %1\n"
" jne 1b\n"
: "=a" (ret), "=m" (*t)
: "r" (v), "m" (*t), "0" (*t)
: "memory");
ret;
});
}
extern __inline__ long
ilockcmpexch (volatile long *t, long v, long c)
{
return
({
register long ret __asm ("%eax");
__asm __volatile ("lock cmpxchgl %2, %1"
: "=a" (ret), "=m" (*t)
: "r" (v), "m" (*t), "0" (c)
: "memory");
ret;
});
}
#undef InterlockedIncrement
#define InterlockedIncrement ilockincr
#undef InterlockedDecrement
#define InterlockedDecrement ilockdecr
#undef InterlockedExchange
#define InterlockedExchange ilockexch
#undef InterlockedCompareExchange
#define InterlockedCompareExchange ilockcmpexch
#endif /*_WINBASE2_H*/
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