cc62a3dbf3
This adds basic support for running on the Atmel SAM3x8e micro-controllers that are found in the Arudino Due boards. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
27 lines
605 B
C
27 lines
605 B
C
#ifndef __SAM3X8E_IRQ_H
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#define __SAM3X8E_IRQ_H
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// Definitions for irq enable/disable on ARM Cortex-M
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static inline void irq_disable(void) {
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asm volatile("cpsid i" ::: "memory");
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}
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static inline void irq_enable(void) {
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asm volatile("cpsie i" ::: "memory");
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}
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typedef unsigned long irqstatus_t;
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static inline irqstatus_t irq_save(void) {
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irqstatus_t flag;
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asm volatile("mrs %0, primask" : "=r" (flag) :: "memory");
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irq_disable();
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return flag;
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}
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static inline void irq_restore(irqstatus_t flag) {
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asm volatile("msr primask, %0" :: "r" (flag) : "memory");
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}
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#endif // irq.h
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