1 /* 2 * OpenRISC Linux 3 * 4 * Linux architectural port borrowing liberally from similar works of 5 * others. All original copyrights apply as per the original source 6 * declaration. 7 * 8 * OpenRISC implementation: 9 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 */ 16 17 #ifndef __ASM_OPENRISC_SPR_H 18 #define __ASM_OPENRISC_SPR_H 19 20 #define mtspr(_spr, _val) __asm__ __volatile__ ( \ 21 "l.mtspr r0,%1,%0" \ 22 : : "K" (_spr), "r" (_val)) 23 #define mtspr_off(_spr, _off, _val) __asm__ __volatile__ ( \ 24 "l.mtspr %0,%1,%2" \ 25 : : "r" (_off), "r" (_val), "K" (_spr)) 26 27 static inline unsigned long mfspr(unsigned long add) 28 { 29 unsigned long ret; 30 __asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add)); 31 return ret; 32 } 33 34 static inline unsigned long mfspr_off(unsigned long add, unsigned long offset) 35 { 36 unsigned long ret; 37 __asm__ __volatile__ ("l.mfspr %0,%1,%2" : "=r" (ret) 38 : "r" (offset), "K" (add)); 39 return ret; 40 } 41 42 #endif 43