register.h

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#ifndef __ppc_register_h
#define __ppc_register_h
 
#include "xenonsprs.h"
 
#define __stringify(rn) #rn
 
#define mfmsr()   ({unsigned long long rval; \
      asm volatile("mfmsr %0" : "=r" (rval)); rval;})
#define mtmsr(v)  asm volatile("mtmsr %0" : : "r" (v))
 
#define mfdec()   ({unsigned int rval; \
      asm volatile("mfdec %0" : "=r" (rval)); rval;})
#define mtdec(v)  asm volatile("mtdec %0" : : "r" (v))
 
#define mfspr(rn) ({unsigned int rval; \
      asm volatile("mfspr %0," __stringify(rn) \
             : "=r" (rval)); rval;})
 
#define mfspr64(rn) ({unsigned long long rval; \
      asm volatile("mfspr %0," __stringify(rn) \
             : "=r" (rval)); rval;})
 
#define mtspr(rn, v)  asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
 
#endif