1 #ifndef _ASM_CRIS_ARCH_SYSTEM_H
2 #define _ASM_CRIS_ARCH_SYSTEM_H
5 /* Read the CPU version register. */
6 static inline unsigned long rdvr(void)
10 __asm__ __volatile__ ("move $vr, %0" : "=rm" (vr));
14 #define cris_machine_name "crisv32"
16 /* Read the user-mode stack pointer. */
17 static inline unsigned long rdusp(void)
21 __asm__ __volatile__ ("move $usp, %0" : "=rm" (usp));
25 /* Read the current stack pointer. */
26 static inline unsigned long rdsp(void)
30 __asm__ __volatile__ ("move.d $sp, %0" : "=rm" (sp));
34 /* Write the user-mode stack pointer. */
35 #define wrusp(usp) __asm__ __volatile__ ("move %0, $usp" : : "rm" (usp))
37 #define nop() __asm__ __volatile__ ("nop");
40 ((__typeof__(*(ptr)))__xchg((unsigned long) (x),(ptr),sizeof(*(ptr))))
42 #define tas(ptr) (xchg((ptr),1))
44 struct __xchg_dummy { unsigned long a[100]; };
45 #define __xg(x) ((struct __xchg_dummy *)(x))
47 /* Used for interrupt control. */
48 #define local_save_flags(x) \
49 __asm__ __volatile__ ("move $ccs, %0" : "=rm" (x) : : "memory");
51 #define local_irq_restore(x) \
52 __asm__ __volatile__ ("move %0, $ccs" : : "rm" (x) : "memory");
54 #define local_irq_disable() __asm__ __volatile__ ("di" : : : "memory");
55 #define local_irq_enable() __asm__ __volatile__ ("ei" : : : "memory");
57 #define irqs_disabled() \
59 unsigned long flags; \
61 local_save_flags(flags);\
62 !(flags & (1 << I_CCS_BITNR)); \
65 /* Used for spinlocks, etc. */
66 #define local_irq_save(x) \
67 __asm__ __volatile__ ("move $ccs, %0\n\tdi" : "=rm" (x) : : "memory");
71 volatile unsigned int lock __attribute__ ((aligned(4)));
73 unsigned int break_lock;
78 #endif /* _ASM_CRIS_ARCH_SYSTEM_H */