[newlib-cygwin.git] / winsup / cygwin / winbase.h

/* winbase.h

   Copyright 2001, 2002, 2003, 2004, 2005, 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

#ifndef __x86_64__
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 InterlockedCompareExchange
#define InterlockedCompareExchange ilockcmpexch
#undef InterlockedCompareExchangePointer
#define InterlockedCompareExchangePointer(d,e,c) \
    (PVOID)InterlockedCompareExchange((LONG volatile *)(d),(LONG)(e),(LONG)(c))
#endif /* !__x86_64 */
#endif /*_WINBASE2_H*/
Commit	Line	Data
0d963613 CV	1	/* winbase.h
0d963613 CV	2
bc837d22	3	Copyright 2001, 2002, 2003, 2004, 2005, 2008, 2009, 2012 Red Hat, Inc.
0d963613 CV	4
	5	This software is a copyrighted work licensed under the terms of the
	6	Cygwin license. Please consult the file "CYGWIN_LICENSE" for
	7	details. */
	8
	9	#include_next "winbase.h"
	10
	11	#ifndef _WINBASE2_H
	12	#define _WINBASE2_H
	13
	14	#ifndef __x86_64__
	15	extern __inline__ LONG
	16	ilockcmpexch (volatile LONG *t, LONG v, LONG c)
	17	{
	18	return
	19	({
	20	register LONG ret __asm ("%eax");
	21	__asm __volatile ("lock cmpxchgl %2, %1"
	22	: "=a" (ret), "=m" (*t)
	23	: "r" (v), "m" (*t), "0" (c)
	24	: "memory");
	25	ret;
	26	});
	27	}
	28
	29	#undef InterlockedCompareExchange
	30	#define InterlockedCompareExchange ilockcmpexch
	31	#undef InterlockedCompareExchangePointer
	32	#define InterlockedCompareExchangePointer(d,e,c) \
	33	(PVOID)InterlockedCompareExchange((LONG volatile *)(d),(LONG)(e),(LONG)(c))
	34	#endif /* !__x86_64 */
	35	#endif /_WINBASE2_H/