[fio.git] / arch / arch-sh.h

/* Renesas SH (32bit) only */

#ifndef ARCH_SH_H
#define ARCH_SH_H

#define FIO_ARCH	(arch_sh)

#define nop             __asm__ __volatile__ ("nop": : :"memory")

#define mb()								\
	do {								\
		if (arch_flags & ARCH_FLAG_1)				\
			__asm__ __volatile__ ("synco": : :"memory");	\
		else							\
			__asm__ __volatile__ (" " : : : "memory");	\
	} while (0)

#define read_barrier()	mb()
#define write_barrier()	mb()

#include <stdio.h>
#include <elf.h>

extern unsigned long arch_flags;

#define CPU_HAS_LLSC	0x0040

static inline int arch_init(char *envp[])
{
	Elf32_auxv_t *auxv;

	while (*envp++ != NULL)
		;

	for (auxv = (Elf32_auxv_t *) envp; auxv->a_type != AT_NULL; auxv++) {
		if (auxv->a_type == AT_HWCAP) {
			if (auxv->a_un.a_val & CPU_HAS_LLSC) {
				arch_flags |= ARCH_FLAG_1;
				break;
			}
		}
	}

	return 0;
}

#define ARCH_HAVE_INIT

#endif
Commit	Line	Data
	1	/* Renesas SH (32bit) only */
	2
	3	#ifndef ARCH_SH_H
	4	#define ARCH_SH_H
	5
	6	#define FIO_ARCH (arch_sh)
	7
	8	#define nop __asm__ __volatile__ ("nop": : :"memory")
	9
	10	#define mb() \
	11	do { \
	12	if (arch_flags & ARCH_FLAG_1) \
	13	__asm__ __volatile__ ("synco": : :"memory"); \
	14	else \
	15	__asm__ __volatile__ (" " : : : "memory"); \
	16	} while (0)
	17
	18	#define read_barrier() mb()
	19	#define write_barrier() mb()
	20
	21	#include <stdio.h>
	22	#include <elf.h>
	23
	24	extern unsigned long arch_flags;
	25
	26	#define CPU_HAS_LLSC 0x0040
	27
	28	static inline int arch_init(char *envp[])
	29	{
	30	Elf32_auxv_t *auxv;
	31
	32	while (*envp++ != NULL)
	33	;
	34
	35	for (auxv = (Elf32_auxv_t *) envp; auxv->a_type != AT_NULL; auxv++) {
	36	if (auxv->a_type == AT_HWCAP) {
	37	if (auxv->a_un.a_val & CPU_HAS_LLSC) {
	38	arch_flags \|= ARCH_FLAG_1;
	39	break;
	40	}
	41	}
	42	}
	43
	44	return 0;
	45	}
	46
	47	#define ARCH_HAVE_INIT
	48
	49	#endif