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
arch_local_irq_restore(unsigned long flags)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
arch_local_save_flags(void)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);
58