[urcu.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>
#include <urcu/syscall-compat.h>

#ifdef __cplusplus
extern "C" {
#endif 

#define CAA_CACHE_LINE_SIZE	128

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

#define HAS_CAA_GET_CYCLES

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;
}

/*
 * Define the membarrier system call number if not yet available in the
 * system headers.
 */
#ifndef __NR_membarrier
#define __NR_membarrier		356
#endif

#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>
999991c6	33	#include <urcu/syscall-compat.h>
ac26f1a8	34
36bc70a8 MD	35	#ifdef __cplusplus
	36	extern "C" {
	37	#endif
	38
06f22bdb	39	#define CAA_CACHE_LINE_SIZE 128
5b3c6672	40
5481ddb3	41	#define cmm_mb() __asm__ __volatile__("bcr 15,0" : : : "memory")
ac26f1a8	42
f8c43f45 MD	43	#define HAS_CAA_GET_CYCLES
f8c43f45 MD	44
ac26f1a8 JB	45	typedef unsigned long long cycles_t;
ac26f1a8 JB	46
71bce82c	47	static inline cycles_t caa_get_cycles (void)
ac26f1a8 JB	48	{
	49	cycles_t cycles;
	50
	51	__asm__ __volatile__("stck %0" : "=m" (cycles) : : "cc", "memory" );
	52
	53	return cycles;
	54	}
	55
33f0d0b1 MD	56	/*
	57	* Define the membarrier system call number if not yet available in the
	58	* system headers.
	59	*/
	60	#ifndef __NR_membarrier
	61	#define __NR_membarrier 356
	62	#endif
	63
36bc70a8 MD	64	#ifdef __cplusplus
	65	}
	66	#endif
	67
1b9119f8	68	#include <urcu/arch/generic.h>
e4d1eb09	69
2041a99a	70	#endif /* _URCU_ARCH_S390_H */