github.com/bir3/gocompiler@v0.9.2202/src/internal/cpu/cpu_arm64.s (about)

     1  // Copyright 2020 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  #include "textflag.h"
     6  
     7  // func getisar0() uint64
     8  TEXT ·getisar0(SB),NOSPLIT,$0
     9  	// get Instruction Set Attributes 0 into R0
    10  	MRS	ID_AA64ISAR0_EL1, R0
    11  	MOVD	R0, ret+0(FP)
    12  	RET
    13  
    14  // func getMIDR() uint64
    15  TEXT ·getMIDR(SB), NOSPLIT, $0-8
    16  	MRS	MIDR_EL1, R0
    17  	MOVD	R0, ret+0(FP)
    18  	RET