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[rpikern]
/
src
/
asm.h
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#ifndef ASM_H_
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#define ASM_H_
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#define enable_intr() asm volatile ("cpsie i")
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#define disable_intr() asm volatile ("cpsid i")
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#define mem_barrier() asm volatile ("dmb" ::: "memory")
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#define delay(x) asm volatile ( \
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"0: subs %0, %0, #1\n\t" \
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"bne 0b\n\t" \
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:: "r"(x) : "cc")
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#endif /* ASM_H_ */