1#ifndef _PPC_BOOT_REG_H 2#define _PPC_BOOT_REG_H 3/* 4 * Copyright 2007 Davud Gibson, IBM Corporation. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 12static inline u32 mfpvr(void) 13{ 14 u32 pvr; 15 asm volatile ("mfpvr %0" : "=r"(pvr)); 16 return pvr; 17} 18 19#define __stringify_1(x) #x 20#define __stringify(x) __stringify_1(x) 21 22#define mfspr(rn) ({unsigned long rval; \ 23 asm volatile("mfspr %0," __stringify(rn) \ 24 : "=r" (rval)); rval; }) 25#define mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v)) 26 27register void *__stack_pointer asm("r1"); 28#define get_sp() (__stack_pointer) 29 30#endif /* _PPC_BOOT_REG_H */ 31