diff options
Diffstat (limited to 'arch/sh/kernel/irq_32.c')
-rw-r--r-- | arch/sh/kernel/irq_32.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/sh/kernel/irq_32.c b/arch/sh/kernel/irq_32.c new file mode 100644 index 000000000000..e5a755be9129 --- /dev/null +++ b/arch/sh/kernel/irq_32.c | |||
@@ -0,0 +1,57 @@ | |||
1 | /* | ||
2 | * SHcompact 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 | |||
13 | void notrace arch_local_irq_restore(unsigned long flags) | ||
14 | { | ||
15 | unsigned long __dummy0, __dummy1; | ||
16 | |||
17 | if (flags == ARCH_IRQ_DISABLED) { | ||
18 | __asm__ __volatile__ ( | ||
19 | "stc sr, %0\n\t" | ||
20 | "or #0xf0, %0\n\t" | ||
21 | "ldc %0, sr\n\t" | ||
22 | : "=&z" (__dummy0) | ||
23 | : /* no inputs */ | ||
24 | : "memory" | ||
25 | ); | ||
26 | } else { | ||
27 | __asm__ __volatile__ ( | ||
28 | "stc sr, %0\n\t" | ||
29 | "and %1, %0\n\t" | ||
30 | #ifdef CONFIG_CPU_HAS_SR_RB | ||
31 | "stc r6_bank, %1\n\t" | ||
32 | "or %1, %0\n\t" | ||
33 | #endif | ||
34 | "ldc %0, sr\n\t" | ||
35 | : "=&r" (__dummy0), "=r" (__dummy1) | ||
36 | : "1" (~ARCH_IRQ_DISABLED) | ||
37 | : "memory" | ||
38 | ); | ||
39 | } | ||
40 | } | ||
41 | EXPORT_SYMBOL(arch_local_irq_restore); | ||
42 | |||
43 | unsigned long notrace arch_local_save_flags(void) | ||
44 | { | ||
45 | unsigned long flags; | ||
46 | |||
47 | __asm__ __volatile__ ( | ||
48 | "stc sr, %0\n\t" | ||
49 | "and #0xf0, %0\n\t" | ||
50 | : "=&z" (flags) | ||
51 | : /* no inputs */ | ||
52 | : "memory" | ||
53 | ); | ||
54 | |||
55 | return flags; | ||
56 | } | ||
57 | EXPORT_SYMBOL(arch_local_save_flags); | ||