about summary refs log tree commit diff
path: root/vendor/golang.org/x/sys/cpu/cpu_arm64.s
blob: 22cc99844a75693c78f2241ac334da02644411fc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
// Copyright 2019 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.

//go:build gc

#include "textflag.h"

// func getisar0() uint64
TEXT ·getisar0(SB),NOSPLIT,$0-8
	// get Instruction Set Attributes 0 into x0
	// mrs x0, ID_AA64ISAR0_EL1 = d5380600
	WORD	$0xd5380600
	MOVD	R0, ret+0(FP)
	RET

// func getisar1() uint64
TEXT ·getisar1(SB),NOSPLIT,$0-8
	// get Instruction Set Attributes 1 into x0
	// mrs x0, ID_AA64ISAR1_EL1 = d5380620
	WORD	$0xd5380620
	MOVD	R0, ret+0(FP)
	RET

// func getpfr0() uint64
TEXT ·getpfr0(SB),NOSPLIT,$0-8
	// get Processor Feature Register 0 into x0
	// mrs x0, ID_AA64PFR0_EL1 = d5380400
	WORD	$0xd5380400
	MOVD	R0, ret+0(FP)
	RET

// func getzfr0() uint64
TEXT ·getzfr0(SB),NOSPLIT,$0-8
	// get SVE Feature Register 0 into x0
	// mrs	x0, ID_AA64ZFR0_EL1 = d5380480
	WORD $0xd5380480
	MOVD	R0, ret+0(FP)
	RET