irqflags.h 916 B

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  1. #ifndef _H8300_IRQFLAGS_H
  2. #define _H8300_IRQFLAGS_H
  3. static inline unsigned long arch_local_save_flags(void)
  4. {
  5. unsigned long flags;
  6. asm volatile ("stc ccr,%w0" : "=r" (flags));
  7. return flags;
  8. }
  9. static inline void arch_local_irq_disable(void)
  10. {
  11. asm volatile ("orc #0x80,ccr" : : : "memory");
  12. }
  13. static inline void arch_local_irq_enable(void)
  14. {
  15. asm volatile ("andc #0x7f,ccr" : : : "memory");
  16. }
  17. static inline unsigned long arch_local_irq_save(void)
  18. {
  19. unsigned long flags = arch_local_save_flags();
  20. arch_local_irq_disable();
  21. return flags;
  22. }
  23. static inline void arch_local_irq_restore(unsigned long flags)
  24. {
  25. asm volatile ("ldc %w0,ccr" : : "r" (flags) : "memory");
  26. }
  27. static inline bool arch_irqs_disabled_flags(unsigned long flags)
  28. {
  29. return (flags & 0x80) == 0x80;
  30. }
  31. static inline bool arch_irqs_disabled(void)
  32. {
  33. return arch_irqs_disabled_flags(arch_local_save_flags());
  34. }
  35. #endif /* _H8300_IRQFLAGS_H */