text: /*
   * Copyright (C) 2004-2006 Atmel Corporation
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  #ifndef __ASM_AVR32_IRQFLAGS_H
  #define __ASM_AVR32_IRQFLAGS_H
  
  #include <asm/sysreg.h>
  
  static inline unsigned long __raw_local_save_flags(void)
  {
  	return sysreg_read(SR);
  }
  
  #define raw_local_save_flags(x)					\
  	do { (x) = __raw_local_save_flags(); } while (0)
  
  /*
   * This will restore ALL status register flags, not only the interrupt
   * mask flag.
   *
   * The empty asm statement informs the compiler of this fact while
   * also serving as a barrier.
   */
  static inline void raw_local_irq_restore(unsigned long flags)
  {
  	sysreg_write(SR, flags);
  	asm volatile("" : : : "memory", "cc");
  }
  
  static inline void raw_local_irq_disable(void)
  {
  	asm volatile("ssrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory");
  }
  
  static inline void raw_local_irq_enable(void)
  {
  	asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory");
  }
  
  static inline int raw_irqs_disabled_flags(unsigned long flags)
  {
  	return (flags & SYSREG_BIT(GM)) != 0;
  }
  
  static inline int raw_irqs_disabled(void)
  {
  	unsigned long flags = __raw_local_save_flags();
  
  	return raw_irqs_disabled_flags(flags);
  }
  
  static inline unsigned long __raw_local_irq_save(void)
  {
  	unsigned long flags = __raw_local_save_flags();
  
  	raw_local_irq_disable();
  
  	return flags;
  }
  
  #define raw_local_irq_save(flags)				\
  	do { (flags) = __raw_local_irq_save(); } while (0)
  
  #endif /* __ASM_AVR32_IRQFLAGS_H */
  