LXR linux/arch/openrisc/include/asm/spr.h

   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
  23static 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
  30static 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