[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>
#include <stdint.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 uint64_t caa_cycles_t;

static inline caa_cycles_t caa_get_cycles (void)
{
	caa_cycles_t cycles;

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

	return cycles;
}

/*
 * On Linux, define the membarrier system call number if not yet available in
 * the system headers.
 */
#if (defined(__linux__) && !defined(__NR_membarrier))
#define __NR_membarrier		356
#endif

#ifdef __cplusplus
}
#endif

#include <urcu/arch/generic.h>

#endif /* _URCU_ARCH_S390_H */
Commit	Line	Data
	1	#ifndef _URCU_ARCH_S390_H
	2	#define _URCU_ARCH_S390_H
	3
	4	/*
	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).
	8	*
	9	* Copyright (c) 2009 Novell, Inc.
	10	* Author: Jan Blunck <jblunck@suse.de>
	11	*
	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:
	18	*
	19	* The above copyright notice and this permission notice shall be included in
	20	* all copies or substantial portions of the Software.
	21	*
	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.
	29	*/
	30
	31	#include <urcu/compiler.h>
	32	#include <urcu/config.h>
	33	#include <urcu/syscall-compat.h>
	34	#include <stdint.h>
	35
	36	#ifdef __cplusplus
	37	extern "C" {
	38	#endif
	39
	40	#define CAA_CACHE_LINE_SIZE 128
	41
	42	#define cmm_mb() __asm__ __volatile__("bcr 15,0" : : : "memory")
	43
	44	#define HAS_CAA_GET_CYCLES
	45
	46	typedef uint64_t caa_cycles_t;
	47
	48	static inline caa_cycles_t caa_get_cycles (void)
	49	{
	50	caa_cycles_t cycles;
	51
	52	__asm__ __volatile__("stck %0" : "=m" (cycles) : : "cc", "memory" );
	53
	54	return cycles;
	55	}
	56
	57	/*
	58	* On Linux, define the membarrier system call number if not yet available in
	59	* the system headers.
	60	*/
	61	#if (defined(__linux__) && !defined(__NR_membarrier))
	62	#define __NR_membarrier 356
	63	#endif
	64
	65	#ifdef __cplusplus
	66	}
	67	#endif
	68
	69	#include <urcu/arch/generic.h>
	70
	71	#endif /* _URCU_ARCH_S390_H */