1// Copyright 2019 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//go:build gc
 6
 7#include "textflag.h"
 8
 9// func getisar0() uint64
10TEXT ·getisar0(SB),NOSPLIT,$0-8
11	// get Instruction Set Attributes 0 into x0
12	// mrs x0, ID_AA64ISAR0_EL1 = d5380600
13	WORD	$0xd5380600
14	MOVD	R0, ret+0(FP)
15	RET
16
17// func getisar1() uint64
18TEXT ·getisar1(SB),NOSPLIT,$0-8
19	// get Instruction Set Attributes 1 into x0
20	// mrs x0, ID_AA64ISAR1_EL1 = d5380620
21	WORD	$0xd5380620
22	MOVD	R0, ret+0(FP)
23	RET
24
25// func getpfr0() uint64
26TEXT ·getpfr0(SB),NOSPLIT,$0-8
27	// get Processor Feature Register 0 into x0
28	// mrs x0, ID_AA64PFR0_EL1 = d5380400
29	WORD	$0xd5380400
30	MOVD	R0, ret+0(FP)
31	RET
32
33// func getzfr0() uint64
34TEXT ·getzfr0(SB),NOSPLIT,$0-8
35	// get SVE Feature Register 0 into x0
36	// mrs	x0, ID_AA64ZFR0_EL1 = d5380480
37	WORD $0xd5380480
38	MOVD	R0, ret+0(FP)
39	RET