[net-next-2.6.git] / arch / sh / kernel / irq_64.c

/*
 * SHmedia irqflags support
 *
 * Copyright (C) 2006 - 2009 Paul Mundt
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/irqflags.h>
#include <linux/module.h>
#include <cpu/registers.h>

void notrace arch_local_irq_restore(unsigned long flags)
{
	unsigned long long __dummy;

	if (flags == ARCH_IRQ_DISABLED) {
		__asm__ __volatile__ (
			"getcon	" __SR ", %0\n\t"
			"or	%0, %1, %0\n\t"
			"putcon	%0, " __SR "\n\t"
			: "=&r" (__dummy)
			: "r" (ARCH_IRQ_DISABLED)
		);
	} else {
		__asm__ __volatile__ (
			"getcon	" __SR ", %0\n\t"
			"and	%0, %1, %0\n\t"
			"putcon	%0, " __SR "\n\t"
			: "=&r" (__dummy)
			: "r" (~ARCH_IRQ_DISABLED)
		);
	}
}
EXPORT_SYMBOL(arch_local_irq_restore);

unsigned long notrace arch_local_save_flags(void)
{
	unsigned long flags;

	__asm__ __volatile__ (
		"getcon	" __SR ", %0\n\t"
		"and	%0, %1, %0"
		: "=&r" (flags)
		: "r" (ARCH_IRQ_DISABLED)
	);

	return flags;
}
EXPORT_SYMBOL(arch_local_save_flags);
Commit	Line	Data
03fdb708 PM	1	/*
	2	* SHmedia irqflags support
	3	*
	4	* Copyright (C) 2006 - 2009 Paul Mundt
	5	*
	6	* This file is subject to the terms and conditions of the GNU General Public
	7	* License. See the file "COPYING" in the main directory of this archive
	8	* for more details.
	9	*/
	10	#include <linux/irqflags.h>
	11	#include <linux/module.h>
	12	#include <cpu/registers.h>
	13
31b37c73	14	void notrace arch_local_irq_restore(unsigned long flags)
03fdb708 PM	15	{
	16	unsigned long long __dummy;
	17
31b37c73	18	if (flags == ARCH_IRQ_DISABLED) {
03fdb708 PM	19	__asm__ __volatile__ (
	20	"getcon " __SR ", %0\n\t"
	21	"or %0, %1, %0\n\t"
	22	"putcon %0, " __SR "\n\t"
	23	: "=&r" (__dummy)
31b37c73	24	: "r" (ARCH_IRQ_DISABLED)
03fdb708 PM	25	);
	26	} else {
	27	__asm__ __volatile__ (
	28	"getcon " __SR ", %0\n\t"
	29	"and %0, %1, %0\n\t"
	30	"putcon %0, " __SR "\n\t"
	31	: "=&r" (__dummy)
31b37c73	32	: "r" (~ARCH_IRQ_DISABLED)
03fdb708 PM	33	);
	34	}
	35	}
31b37c73	36	EXPORT_SYMBOL(arch_local_irq_restore);
03fdb708	37
31b37c73	38	unsigned long notrace arch_local_save_flags(void)
03fdb708 PM	39	{
	40	unsigned long flags;
	41
	42	__asm__ __volatile__ (
	43	"getcon " __SR ", %0\n\t"
	44	"and %0, %1, %0"
	45	: "=&r" (flags)
31b37c73	46	: "r" (ARCH_IRQ_DISABLED)
03fdb708 PM	47	);
	48
	49	return flags;
	50	}
31b37c73	51	EXPORT_SYMBOL(arch_local_save_flags);