aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sh/kernel/irq_64.c
blob: 32365ba0e039868bddce2eb3a3ce7b6aee64b907 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
/*
 * 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 raw_local_irq_restore(unsigned long flags)
{
	unsigned long long __dummy;

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

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

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

	return flags;
}
EXPORT_SYMBOL(__raw_local_save_flags);