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kernel add
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/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* 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.
*/
#ifndef __ASM_OPENRISC_SPR_H
#define __ASM_OPENRISC_SPR_H
#define mtspr(_spr, _val) __asm__ __volatile__ ( \
"l.mtspr r0,%1,%0" \
: : "K" (_spr), "r" (_val))
#define mtspr_off(_spr, _off, _val) __asm__ __volatile__ ( \
"l.mtspr %0,%1,%2" \
: : "r" (_off), "r" (_val), "K" (_spr))
static inline unsigned long mfspr(unsigned long add)
{
unsigned long ret;
__asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add));
return ret;
}
static inline unsigned long mfspr_off(unsigned long add, unsigned long offset)
{
unsigned long ret;
__asm__ __volatile__ ("l.mfspr %0,%1,%2" : "=r" (ret)
: "r" (offset), "K" (add));
return ret;
}
#endif
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