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#ifndef __ASM_CRIS_ARCH_SYSTEM_H
#define __ASM_CRIS_ARCH_SYSTEM_H
#include <linux/config.h>
/* read the CPU version register */
extern inline unsigned long rdvr(void) {
unsigned char vr;
__asm__ volatile ("move $vr,%0" : "=rm" (vr));
return vr;
}
/* read/write the user-mode stackpointer */
extern inline unsigned long rdusp(void) {
unsigned long usp;
__asm__ __volatile__("move $usp,%0" : "=rm" (usp));
return usp;
}
#define wrusp(usp) \
__asm__ __volatile__("move %0,$usp" : /* no outputs */ : "rm" (usp))
/* read the current stackpointer */
extern inline unsigned long rdsp(void) {
unsigned long sp;
__asm__ __volatile__("move.d $sp,%0" : "=rm" (sp));
return sp;
}
extern inline unsigned long _get_base(char * addr)
{
return 0;
}
#define nop() __asm__ __volatile__ ("nop");
#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
#define tas(ptr) (xchg((ptr),1))
struct __xchg_dummy { unsigned long a[100]; };
#define __xg(x) ((struct __xchg_dummy *)(x))
/* interrupt control.. */
#define local_save_flags(x) __asm__ __volatile__ ("move $ccr,%0" : "=rm" (x) : : "memory");
#define local_irq_restore(x) __asm__ __volatile__ ("move %0,$ccr" : : "rm" (x) : "memory");
#define local_irq_disable() __asm__ __volatile__ ( "di" : : :"memory");
#define local_irq_enable() __asm__ __volatile__ ( "ei" : : :"memory");
#define irqs_disabled() \
({ \
unsigned long flags; \
local_save_flags(flags); \
!(flags & (1<<5)); \
})
/* For spinlocks etc */
#define local_irq_save(x) __asm__ __volatile__ ("move $ccr,%0\n\tdi" : "=rm" (x) : : "memory");
#endif
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