| // 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 ID_AA64ISAR0_EL1, R0 |
| MOVD R0, ret+0(FP) |
| RET |
| |
| // func getisar1() uint64 |
| TEXT ·getisar1(SB),NOSPLIT,$0-8 |
| // get Instruction Set Attributes 1 into x0 |
| MRS ID_AA64ISAR1_EL1, R0 |
| MOVD R0, ret+0(FP) |
| RET |
| |
| // func getpfr0() uint64 |
| TEXT ·getpfr0(SB),NOSPLIT,$0-8 |
| // get Processor Feature Register 0 into x0 |
| MRS ID_AA64PFR0_EL1, R0 |
| MOVD R0, ret+0(FP) |
| RET |
| |
| // func getzfr0() uint64 |
| TEXT ·getzfr0(SB),NOSPLIT,$0-8 |
| // get SVE Feature Register 0 into x0 |
| MRS ID_AA64ZFR0_EL1, R0 |
| MOVD R0, ret+0(FP) |
| RET |
