reg.h (624B)
1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2#ifndef _PPC_BOOT_REG_H 3#define _PPC_BOOT_REG_H 4/* 5 * Copyright 2007 Davud Gibson, IBM Corporation. 6 */ 7 8static inline u32 mfpvr(void) 9{ 10 u32 pvr; 11 asm volatile ("mfpvr %0" : "=r"(pvr)); 12 return pvr; 13} 14 15#define __stringify_1(x) #x 16#define __stringify(x) __stringify_1(x) 17 18#define mfspr(rn) ({unsigned long rval; \ 19 asm volatile("mfspr %0," __stringify(rn) \ 20 : "=r" (rval)); rval; }) 21#define mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v)) 22 23register void *__stack_pointer asm("r1"); 24#define get_sp() (__stack_pointer) 25 26#endif /* _PPC_BOOT_REG_H */