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8feff5de77
Change-Id: I44c0bab1cc8a3b7ce59a1c690cb22046bca32bac Reviewed-on: https://go-review.googlesource.com/c/sys/+/313689 Trust: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org>
33 lines
771 B
ArmAsm
33 lines
771 B
ArmAsm
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build gc
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// +build gc
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#include "textflag.h"
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// func getisar0() uint64
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TEXT ·getisar0(SB),NOSPLIT,$0-8
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// get Instruction Set Attributes 0 into x0
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// mrs x0, ID_AA64ISAR0_EL1 = d5380600
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WORD $0xd5380600
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MOVD R0, ret+0(FP)
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RET
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// func getisar1() uint64
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TEXT ·getisar1(SB),NOSPLIT,$0-8
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// get Instruction Set Attributes 1 into x0
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// mrs x0, ID_AA64ISAR1_EL1 = d5380620
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WORD $0xd5380620
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MOVD R0, ret+0(FP)
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RET
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// func getpfr0() uint64
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TEXT ·getpfr0(SB),NOSPLIT,$0-8
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// get Processor Feature Register 0 into x0
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// mrs x0, ID_AA64PFR0_EL1 = d5380400
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WORD $0xd5380400
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MOVD R0, ret+0(FP)
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RET
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