/* * superh/common.h * Common Super-H configuration information. * * Copyright (c) 2001 *	Transvirtual Technologies, Inc.  All rights reserved. * * Copyright (c) 2003 *	Kaffe.org contributors. See ChangeLog for details. * * See the file "license.terms" for information on usage and redistribution  * of this file.  */#ifndef __superh_common_h#define __superh_common_h#include <stddef.h>/* * 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. * * Copied from "config/mips/common.h". */#define COMPARE_AND_EXCHANGE(A,O,N)		\({						\    int ret = 0;				\    jthread_suspendall();			\						\    if (*(A) == (O)) {				\	*(A) = (N);				\	ret = 1;				\    }						\    jthread_unsuspendall();			\    ret;					\})#endif