[urcu.git] / include / urcu / arch / s390.h

// SPDX-FileCopyrightText: 2009 Novell, Inc.
//
// SPDX-License-Identifier: MIT

#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).
 *
 * Author: Jan Blunck <jblunck@suse.de>
 */

#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	// SPDX-FileCopyrightText: 2009 Novell, Inc.
	2	//
	3	// SPDX-License-Identifier: MIT
	4
	5	#ifndef _URCU_ARCH_S390_H
	6	#define _URCU_ARCH_S390_H
	7
	8	/*
	9	* Trivial definitions for the S390 architecture based on information from the
	10	* Principles of Operation "CPU Serialization" (5-91), "BRANCH ON CONDITION"
	11	* (7-25) and "STORE CLOCK" (7-169).
	12	*
	13	* Author: Jan Blunck <jblunck@suse.de>
	14	*/
	15
	16	#include <urcu/compiler.h>
	17	#include <urcu/config.h>
	18	#include <urcu/syscall-compat.h>
	19	#include <stdint.h>
	20
	21	#ifdef __cplusplus
	22	extern "C" {
	23	#endif
	24
	25	#define CAA_CACHE_LINE_SIZE 128
	26
	27	#define cmm_mb() __asm__ __volatile__("bcr 15,0" : : : "memory")
	28
	29	#define HAS_CAA_GET_CYCLES
	30
	31	typedef uint64_t caa_cycles_t;
	32
	33	static inline caa_cycles_t caa_get_cycles (void)
	34	{
	35	caa_cycles_t cycles;
	36
	37	__asm__ __volatile__("stck %0" : "=m" (cycles) : : "cc", "memory" );
	38
	39	return cycles;
	40	}
	41
	42	/*
	43	* On Linux, define the membarrier system call number if not yet available in
	44	* the system headers.
	45	*/
	46	#if (defined(__linux__) && !defined(__NR_membarrier))
	47	#define __NR_membarrier 356
	48	#endif
	49
	50	#ifdef __cplusplus
	51	}
	52	#endif
	53
	54	#include <urcu/arch/generic.h>
	55
	56	#endif /* _URCU_ARCH_S390_H */