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4f4f1c6fea
This reverts CL 704075. Reason for revert: Based on golang/go#76386, it doesn't seem to work correctly. Fixes golang/go#76386. Change-Id: I51ccbc8715c25c0d061d56dfbf0e8158f1207018 Reviewed-on: https://go-review.googlesource.com/c/sys/+/724160 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> Auto-Submit: Cherry Mui <cherryyz@google.com>
36 lines
809 B
ArmAsm
36 lines
809 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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#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 ID_AA64ISAR0_EL1, R0
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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 ID_AA64ISAR1_EL1, R0
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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 ID_AA64PFR0_EL1, R0
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MOVD R0, ret+0(FP)
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RET
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// func getzfr0() uint64
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TEXT ·getzfr0(SB),NOSPLIT,$0-8
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// get SVE Feature Register 0 into x0
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MRS ID_AA64ZFR0_EL1, R0
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MOVD R0, ret+0(FP)
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RET
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