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  */
  25 static 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  */
  37 static 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