LXR linux/arch/unicore32/include/asm/irqflags.h

   1/*
   2 * linux/arch/unicore32/include/asm/irqflags.h
   3 *
   4 * Code specific to PKUnity SoC and UniCore ISA
   5 *
   6 * Copyright (C) 2001-2010 GUAN Xue-tao
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12#ifndef __UNICORE_IRQFLAGS_H__
  13#define __UNICORE_IRQFLAGS_H__
  14
  15#ifdef __KERNEL__
  16
  17#include <asm/ptrace.h>
  18
  19#define ARCH_IRQ_DISABLED       (PRIV_MODE | PSR_I_BIT)
  20#define ARCH_IRQ_ENABLED        (PRIV_MODE)
  21
  22/*
  23 * Save the current interrupt enable state.
  24 */
  25static inline unsigned long arch_local_save_flags(void)
  26{
  27        unsigned long temp;
  28
  29        asm volatile("mov %0, asr" : "=r" (temp) : : "memory", "cc");
  30
  31        return temp & PSR_c;
  32}
  33
  34/*
  35 * restore saved IRQ state
  36 */
  37static inline void arch_local_irq_restore(unsigned long flags)
  38{
  39        unsigned long temp;
  40
  41        asm volatile(
  42                "mov    %0, asr\n"
  43                "mov.a  asr, %1\n"
  44                "mov.f  asr, %0"
  45                : "=&r" (temp)
  46                : "r" (flags)
  47                : "memory", "cc");
  48}
  49
  50#include <asm-generic/irqflags.h>
  51
  52#endif
  53#endif
  54