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/* winbase.h
Copyright 2002, 2003, 2004, 2008, 2009, 2012 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
/* For some unknown reason, InterlockedAdd is only supported on Itanium
when using the Windows headers. Fortunately we're not restricted to the
Windows headers :) */
extern __inline__ LONG
ilockadd (volatile LONG *m, LONG value)
{
register LONG __res;
__asm__ __volatile__ ("\n\
movl %3,%0\n\
lock xadd %0,%1\n\
addl %3,%0\n\
": "=&r" (__res), "=m" (*m): "m" (*m), "r" (value): "cc");
return __res;
}
extern __inline__ LONG
ilockincr (volatile LONG *m)
{
register LONG __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 LONG __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 InterlockedAdd
#define InterlockedAdd ilockadd
#undef InterlockedIncrement
#define InterlockedIncrement ilockincr
#undef InterlockedDecrement
#define InterlockedDecrement ilockdecr
#undef InterlockedExchange
#define InterlockedExchange ilockexch
#undef InterlockedCompareExchange
#define InterlockedCompareExchange ilockcmpexch
#undef InterlockedCompareExchangePointer
#ifndef __x86_64
#define InterlockedCompareExchangePointer(d,e,c) \
(PVOID)InterlockedCompareExchange((LONG volatile *)(d),(LONG)(e),(LONG)(c))
#endif /* !__x86_64 */
#endif /*_WINBASE2_H*/
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