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#ifndef __SAM3X8E_IRQ_H
#define __SAM3X8E_IRQ_H
// Definitions for irq enable/disable on ARM Cortex-M
static inline void irq_disable(void) {
asm volatile("cpsid i" ::: "memory");
}
static inline void irq_enable(void) {
asm volatile("cpsie i" ::: "memory");
}
typedef unsigned long irqstatus_t;
static inline irqstatus_t irq_save(void) {
irqstatus_t flag;
asm volatile("mrs %0, primask" : "=r" (flag) :: "memory");
irq_disable();
return flag;
}
static inline void irq_restore(irqstatus_t flag) {
asm volatile("msr primask, %0" :: "r" (flag) : "memory");
}
#endif // irq.h
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