diff options
Diffstat (limited to 'nuttx/arch/sh/include/m16c/irq.h')
| -rw-r--r-- | nuttx/arch/sh/include/m16c/irq.h | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/nuttx/arch/sh/include/m16c/irq.h b/nuttx/arch/sh/include/m16c/irq.h index 2e29f6500..daec5d684 100644 --- a/nuttx/arch/sh/include/m16c/irq.h +++ b/nuttx/arch/sh/include/m16c/irq.h @@ -191,7 +191,7 @@ # define M16C_INT0_IRQ (_LAST_FIXED+24) /* ffd74: INT0 */ # define M16C_INT1_IRQ (_LAST_FIXED+25) /* ffd78: INT1 */ -# define NR_IRQS (_LAST_FIXED+26 /* Total number of supported IRQs */ +# define NR_IRQS (_LAST_FIXED+26) /* Total number of supported IRQs */ #endif #define M16C_SYSTIMER_IRQ M16C_TMRA0_IRQ @@ -226,6 +226,34 @@ extern "C" { ************************************************************************************/ #ifndef __ASSEMBLY__ + +/* Save the current interrupt enable state & disable IRQs */ + +static inline irqstate_t irqsave(void) +{ + irqstate_t flags; + __asm__ __volatile__ + ( + "\tstc flg, %0\n" + "\tfclr I\n" + : "=r" (flags) + : + : "memory"); + return flags; +} + +/* Restore saved IRQ & FIQ state */ + +static inline void irqrestore(irqstate_t flags) +{ + __asm__ __volatile__ + ( + "ldc %0, flg" + : + : "r" (flags) + : "memory"); +} + #endif /************************************************************************************ |