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[NativeAOT/ARM] Fix RhpLockCmpXchg16 #97743

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merged 1 commit into from
Jan 31, 2024
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[NativeAOT/ARM] Fix RhpLockCmpXchg16 #97743

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3 changes: 2 additions & 1 deletion src/coreclr/nativeaot/Runtime/arm/Interlocked.S
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@ LEAF_END RhpLockCmpXchg8, _TEXT
// r1 = value
// r2 = comparand
LEAF_ENTRY RhpLockCmpXchg16, _TEXT
uxth r2, r2
dmb
ALTERNATE_ENTRY RhpLockCmpXchg16AVLocation
LOCAL_LABEL(CmpXchg16Retry):
Expand All @@ -46,7 +47,7 @@ LOCAL_LABEL(CmpXchg16Retry):
cmp r12, #0
bne LOCAL_LABEL(CmpXchg16Retry)
LOCAL_LABEL(CmpXchg16Exit):
mov r0, r3
sxth r0, r3
dmb
bx lr
LEAF_END RhpLockCmpXchg16, _TEXT
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