reg.h

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#ifndef _PPC_BOOT_REG_H
#define _PPC_BOOT_REG_H
/*
 * Copyright 2007 Davud Gibson, IBM Corporation.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

static inline u32 mfpvr(void)
{
    u32 pvr;
    asm volatile ("mfpvr    %0" : "=r"(pvr));
    return pvr;
}

#define __stringify_1(x)    #x
#define __stringify(x)      __stringify_1(x)

#define mfspr(rn)   ({unsigned long rval; \
            asm volatile("mfspr %0," __stringify(rn) \
                : "=r" (rval)); rval; })
#define mtspr(rn, v)    asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))

register void *__stack_pointer asm("r1");
#define get_sp()    (__stack_pointer)

#endif  /* _PPC_BOOT_REG_H */