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-rw-r--r--src/internal/cpu/cpu_arm64.s18
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diff --git a/src/internal/cpu/cpu_arm64.s b/src/internal/cpu/cpu_arm64.s
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+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+// func getisar0() uint64
+TEXT ·getisar0(SB),NOSPLIT,$0
+ // get Instruction Set Attributes 0 into R0
+ MRS ID_AA64ISAR0_EL1, R0
+ MOVD R0, ret+0(FP)
+ RET
+
+// func getMIDR() uint64
+TEXT ·getMIDR(SB), NOSPLIT, $0-8
+ MRS MIDR_EL1, R0
+ MOVD R0, ret+0(FP)
+ RET