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rust-embedded / cortex-m Public

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cortex-m
asm

/

basepri_w-cm7-r0p1.s

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12 lines (12 loc) · 221 Bytes

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cortex-m
asm

/

basepri_w-cm7-r0p1.s

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12 lines (12 loc) · 221 Bytes

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;; fn __basepri_w(u8)

;; executed in a critical section to work around a silicon erratum

.global __basepri_w

__basepri_w:

mrs r1, PRIMASK

cpsid i

tst.w r1, #1

msr BASEPRI, r0

it ne

bxne lr

cpsie i

bx lr

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