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#ifndef _ASM_CRIS_ARCH_SYSTEM_H
#define _ASM_CRIS_ARCH_SYSTEM_H
/* Read the CPU version register. */
static inline unsigned long rdvr(void)
{
unsigned char vr;
__asm__ __volatile__ ("move $vr, %0" : "=rm" (vr));
return vr;
}
#define cris_machine_name "crisv32"
/* Read the user-mode stack pointer. */
static inline unsigned long rdusp(void)
{
unsigned long usp;
__asm__ __volatile__ ("move $usp, %0" : "=rm" (usp));
return usp;
}
/* Read the current stack pointer. */
static inline unsigned long rdsp(void)
{
unsigned long sp;
__asm__ __volatile__ ("move.d $sp, %0" : "=rm" (sp));
return sp;
}
/* Write the user-mode stack pointer. */
#define wrusp(usp) __asm__ __volatile__ ("move %0, $usp" : : "rm" (usp))
#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))
/* Used for interrupt control. */
#define local_save_flags(x) \
__asm__ __volatile__ ("move $ccs, %0" : "=rm" (x) : : "memory");
#define local_irq_restore(x) \
__asm__ __volatile__ ("move %0, $ccs" : : "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 << I_CCS_BITNR)); \
})
/* Used for spinlocks, etc. */
#define local_irq_save(x) \
__asm__ __volatile__ ("move $ccs, %0\n\tdi" : "=rm" (x) : : "memory");
#ifdef CONFIG_SMP
typedef struct {
volatile unsigned int lock __attribute__ ((aligned(4)));
#ifdef CONFIG_PREEMPT
unsigned int break_lock;
#endif
} spinlock_t;
#endif
#endif /* _ASM_CRIS_ARCH_SYSTEM_H */
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