1 // Copyright 2020 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4 5 #include "textflag.h"
6 7 // func getisar0() uint64
8 TEXT ·getisar0(SB),NOSPLIT,$0
9 // get Instruction Set Attributes 0 into R0
10 MRS ID_AA64ISAR0_EL1, R0
11 MOVD R0, ret+0(FP)
12 RET
13 14 // func getpfr0() uint64
15 TEXT ·getpfr0(SB),NOSPLIT,$0-8
16 // get Processor Feature Register 0 into R0
17 MRS ID_AA64PFR0_EL1, R0
18 MOVD R0, ret+0(FP)
19 RET
20 21 // func getMIDR() uint64
22 TEXT ·getMIDR(SB), NOSPLIT, $0-8
23 MRS MIDR_EL1, R0
24 MOVD R0, ret+0(FP)
25 RET
26