[userspace-rcu.git] / urcu / arch / s390.h

#ifndef _URCU_ARCH_S390_H
#define _URCU_ARCH_S390_H

/*
 * Trivial definitions for the S390 architecture based on information from the
 * Principles of Operation "CPU Serialization" (5-91), "BRANCH ON CONDITION"
 * (7-25) and "STORE CLOCK" (7-169).
 *
 * Copyright (c) 2009 Novell, Inc.
 * Author: Jan Blunck <jblunck@suse.de>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#include <urcu/compiler.h>
#include <urcu/config.h>

#ifdef __cplusplus
extern "C" {
#endif 

#define CAA_CACHE_LINE_SIZE	128

#define cmm_mb()    __asm__ __volatile__("bcr 15,0" : : : "memory")

typedef unsigned long long cycles_t;

static inline cycles_t caa_get_cycles (void)
{
	cycles_t cycles;

	__asm__ __volatile__("stck %0" : "=m" (cycles) : : "cc", "memory" );

	return cycles;
}

#ifdef __cplusplus 
}
#endif

#include <urcu/arch/generic.h>

#endif /* _URCU_ARCH_S390_H */
Commit	Line	Data
2041a99a MD	1	#ifndef _URCU_ARCH_S390_H
2041a99a MD	2	#define _URCU_ARCH_S390_H
ac26f1a8 JB	3
ac26f1a8 JB	4	/*
7039fa6f JB	5	* Trivial definitions for the S390 architecture based on information from the
	6	* Principles of Operation "CPU Serialization" (5-91), "BRANCH ON CONDITION"
	7	* (7-25) and "STORE CLOCK" (7-169).
ac26f1a8	8	*
7039fa6f	9	* Copyright (c) 2009 Novell, Inc.
ac26f1a8 JB	10	* Author: Jan Blunck <jblunck@suse.de>
ac26f1a8 JB	11	*
7039fa6f JB	12	* Permission is hereby granted, free of charge, to any person obtaining a copy
	13	* of this software and associated documentation files (the "Software"), to
	14	* deal in the Software without restriction, including without limitation the
	15	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	16	* sell copies of the Software, and to permit persons to whom the Software is
	17	* furnished to do so, subject to the following conditions:
ac26f1a8	18	*
7039fa6f JB	19	* The above copyright notice and this permission notice shall be included in
7039fa6f JB	20	* all copies or substantial portions of the Software.
ac26f1a8	21	*
7039fa6f JB	22	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	23	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	24	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	25	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	26	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	27	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	28	* IN THE SOFTWARE.
ac26f1a8 JB	29	*/
ac26f1a8 JB	30
14714b51	31	#include <urcu/compiler.h>
1655f018	32	#include <urcu/config.h>
ac26f1a8	33
36bc70a8 MD	34	#ifdef __cplusplus
	35	extern "C" {
	36	#endif
	37
06f22bdb	38	#define CAA_CACHE_LINE_SIZE 128
5b3c6672	39
5481ddb3	40	#define cmm_mb() __asm__ __volatile__("bcr 15,0" : : : "memory")
ac26f1a8 JB	41
	42	typedef unsigned long long cycles_t;
	43
71bce82c	44	static inline cycles_t caa_get_cycles (void)
ac26f1a8 JB	45	{
	46	cycles_t cycles;
	47
	48	__asm__ __volatile__("stck %0" : "=m" (cycles) : : "cc", "memory" );
	49
	50	return cycles;
	51	}
	52
36bc70a8 MD	53	#ifdef __cplusplus
	54	}
	55	#endif
	56
1b9119f8	57	#include <urcu/arch/generic.h>
e4d1eb09	58
2041a99a	59	#endif /* _URCU_ARCH_S390_H */