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29 lines
633 B
C
29 lines
633 B
C
#ifndef __ARM_V5_IRQ_H__
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#define __ARM_V5_IRQ_H__
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static inline void enable_irqs()
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{
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__asm__ __volatile__(
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"mrs r0, cpsr_fc\n"
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"bic r0, r0, #0x80\n" /* ARM_IRQ_BIT */
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"msr cpsr_fc, r0\n"
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);
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}
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static inline void disable_irqs()
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{
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__asm__ __volatile__(
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"mrs r0, cpsr_fc\n"
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"orr r0, r0, #0x80\n" /* ARM_IRQ_BIT */
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"msr cpsr_fc, r0\n"
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);
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}
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/* Disable the irqs unconditionally, but also keep the previous state such that
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* if it was already disabled before the call, the restore call would retain
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* this state. */
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void irq_local_disable_save(unsigned long *state);
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void irq_local_restore(unsigned long state);
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#endif
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