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- // 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
- // +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
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