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1da177e4 LT |
1 | #ifndef __ASM_CRIS_ARCH_SYSTEM_H |
2 | #define __ASM_CRIS_ARCH_SYSTEM_H | |
3 | ||
1da177e4 LT |
4 | |
5 | /* read the CPU version register */ | |
6 | ||
d9b5444e | 7 | static inline unsigned long rdvr(void) { |
1da177e4 LT |
8 | unsigned char vr; |
9 | __asm__ volatile ("move $vr,%0" : "=rm" (vr)); | |
10 | return vr; | |
11 | } | |
12 | ||
7cf32cad MS |
13 | #define cris_machine_name "cris" |
14 | ||
1da177e4 LT |
15 | /* read/write the user-mode stackpointer */ |
16 | ||
d9b5444e | 17 | static inline unsigned long rdusp(void) { |
1da177e4 LT |
18 | unsigned long usp; |
19 | __asm__ __volatile__("move $usp,%0" : "=rm" (usp)); | |
20 | return usp; | |
21 | } | |
22 | ||
23 | #define wrusp(usp) \ | |
24 | __asm__ __volatile__("move %0,$usp" : /* no outputs */ : "rm" (usp)) | |
25 | ||
26 | /* read the current stackpointer */ | |
27 | ||
d9b5444e | 28 | static inline unsigned long rdsp(void) { |
1da177e4 LT |
29 | unsigned long sp; |
30 | __asm__ __volatile__("move.d $sp,%0" : "=rm" (sp)); | |
31 | return sp; | |
32 | } | |
33 | ||
d9b5444e | 34 | static inline unsigned long _get_base(char * addr) |
1da177e4 LT |
35 | { |
36 | return 0; | |
37 | } | |
38 | ||
39 | #define nop() __asm__ __volatile__ ("nop"); | |
40 | ||
41 | #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) | |
42 | #define tas(ptr) (xchg((ptr),1)) | |
43 | ||
44 | struct __xchg_dummy { unsigned long a[100]; }; | |
45 | #define __xg(x) ((struct __xchg_dummy *)(x)) | |
46 | ||
47 | /* interrupt control.. */ | |
48 | #define local_save_flags(x) __asm__ __volatile__ ("move $ccr,%0" : "=rm" (x) : : "memory"); | |
49 | #define local_irq_restore(x) __asm__ __volatile__ ("move %0,$ccr" : : "rm" (x) : "memory"); | |
50 | #define local_irq_disable() __asm__ __volatile__ ( "di" : : :"memory"); | |
51 | #define local_irq_enable() __asm__ __volatile__ ( "ei" : : :"memory"); | |
52 | ||
53 | #define irqs_disabled() \ | |
54 | ({ \ | |
55 | unsigned long flags; \ | |
56 | local_save_flags(flags); \ | |
57 | !(flags & (1<<5)); \ | |
58 | }) | |
59 | ||
60 | /* For spinlocks etc */ | |
61 | #define local_irq_save(x) __asm__ __volatile__ ("move $ccr,%0\n\tdi" : "=rm" (x) : : "memory"); | |
62 | ||
63 | #endif |