blob: 830e5486acfbf7cb7919941150ebd8357b2a3d05 [file] [log] [blame]
Nobuhiro Iwamatsub02bad12007-09-23 02:12:30 +09001#ifndef __ASM_SH_IRQFLAGS_H
2#define __ASM_SH_IRQFLAGS_H
3
4static inline void raw_local_irq_enable(void)
5{
6 unsigned long __dummy0, __dummy1;
7
8 __asm__ __volatile__ (
9 "stc sr, %0\n\t"
10 "and %1, %0\n\t"
11#ifdef CONFIG_CPU_HAS_SR_RB
12 "stc r6_bank, %1\n\t"
13 "or %1, %0\n\t"
14#endif
15 "ldc %0, sr\n\t"
16 : "=&r" (__dummy0), "=r" (__dummy1)
17 : "1" (~0x000000f0)
18 : "memory"
19 );
20}
21
22static inline void raw_local_irq_disable(void)
23{
24 unsigned long flags;
25
26 __asm__ __volatile__ (
27 "stc sr, %0\n\t"
28 "or #0xf0, %0\n\t"
29 "ldc %0, sr\n\t"
30 : "=&z" (flags)
31 : /* no inputs */
32 : "memory"
33 );
34}
35
36static inline void set_bl_bit(void)
37{
38 unsigned long __dummy0, __dummy1;
39
40 __asm__ __volatile__ (
41 "stc sr, %0\n\t"
42 "or %2, %0\n\t"
43 "and %3, %0\n\t"
44 "ldc %0, sr\n\t"
45 : "=&r" (__dummy0), "=r" (__dummy1)
46 : "r" (0x10000000), "r" (0xffffff0f)
47 : "memory"
48 );
49}
50
51static inline void clear_bl_bit(void)
52{
53 unsigned long __dummy0, __dummy1;
54
55 __asm__ __volatile__ (
56 "stc sr, %0\n\t"
57 "and %2, %0\n\t"
58 "ldc %0, sr\n\t"
59 : "=&r" (__dummy0), "=r" (__dummy1)
60 : "1" (~0x10000000)
61 : "memory"
62 );
63}
64
65static inline unsigned long __raw_local_save_flags(void)
66{
67 unsigned long flags;
68
69 __asm__ __volatile__ (
70 "stc sr, %0\n\t"
71 "and #0xf0, %0\n\t"
72 : "=&z" (flags)
73 : /* no inputs */
74 : "memory"
75 );
76
77 return flags;
78}
79
80#define raw_local_save_flags(flags) \
81 do { (flags) = __raw_local_save_flags(); } while (0)
82
83static inline int raw_irqs_disabled_flags(unsigned long flags)
84{
85 return (flags != 0);
86}
87
88static inline int raw_irqs_disabled(void)
89{
90 unsigned long flags = __raw_local_save_flags();
91
92 return raw_irqs_disabled_flags(flags);
93}
94
95static inline unsigned long __raw_local_irq_save(void)
96{
97 unsigned long flags, __dummy;
98
99 __asm__ __volatile__ (
100 "stc sr, %1\n\t"
101 "mov %1, %0\n\t"
102 "or #0xf0, %0\n\t"
103 "ldc %0, sr\n\t"
104 "mov %1, %0\n\t"
105 "and #0xf0, %0\n\t"
106 : "=&z" (flags), "=&r" (__dummy)
107 : /* no inputs */
108 : "memory"
109 );
110
111 return flags;
112}
113
114#define raw_local_irq_save(flags) \
115 do { (flags) = __raw_local_irq_save(); } while (0)
116
117#define local_irq_save raw_local_irq_save
118
119static inline void raw_local_irq_restore(unsigned long flags)
120{
121 if ((flags & 0xf0) != 0xf0)
122 raw_local_irq_enable();
123}
124#define local_irq_restore raw_local_irq_restore
125
126#endif /* __ASM_SH_IRQFLAGS_H */