common.h

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/*
 * ia64/common.h
 * Common IA-64 configuration information.
 *
 * Copyright (c) 2001
 *	MandrakeSoft.  All rights reserved.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file.
 */

#ifndef __ia64_common_h
#define __ia64_common_h

#define NEED_STACK_ALIGN
#define STACK_ALIGN(p)  ((((unsigned long)(p)) & 15) ^ (unsigned long)(p))

#if NEED_sysdepCallMethod
#include "sysdepCallMethod.h"
#endif

/*
 * Do an atomic compare and exchange.  The address 'A' is checked
 * against value 'O' and if they match it's exchanged with value 'N'.
 * We return '1' if the exchange is sucessful, otherwise 0.
 */

#ifdef HAVE_IA64INTRIN_H
#include <ia64intrin.h>
#endif

/* Intel Itanium Processor-specific ABI defines
   __sync_bool_compare_and_swap primitive (7.4.3).  */
#undef COMPARE_AND_EXCHANGE
#define COMPARE_AND_EXCHANGE(A, O, N) \
	__sync_bool_compare_and_swap((A), (O), (N))

#endif