xref: /linux/arch/openrisc/include/asm/spr.h (revision 75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * OpenRISC Linux
4  *
5  * Linux architectural port borrowing liberally from similar works of
6  * others.  All original copyrights apply as per the original source
7  * declaration.
8  *
9  * OpenRISC implementation:
10  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
11  */
12 
13 #ifndef __ASM_OPENRISC_SPR_H
14 #define __ASM_OPENRISC_SPR_H
15 
16 #define mtspr(_spr, _val) __asm__ __volatile__ (		\
17 	"l.mtspr r0,%1,%0"					\
18 	: : "K" (_spr), "r" (_val))
19 #define mtspr_off(_spr, _off, _val) __asm__ __volatile__ (	\
20 	"l.mtspr %0,%1,%2"					\
21 	: : "r" (_off), "r" (_val), "K" (_spr))
22 
mfspr(unsigned long add)23 static inline unsigned long mfspr(unsigned long add)
24 {
25 	unsigned long ret;
26 	__asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add));
27 	return ret;
28 }
29 
mfspr_off(unsigned long add,unsigned long offset)30 static inline unsigned long mfspr_off(unsigned long add, unsigned long offset)
31 {
32 	unsigned long ret;
33 	__asm__ __volatile__ ("l.mfspr %0,%1,%2" : "=r" (ret)
34 						 : "r" (offset), "K" (add));
35 	return ret;
36 }
37 
38 #endif
39