1//go:build gc
 2
 3#include "textflag.h"
 4
 5// lifted from github.com/golang/sys and cpu/cpu_arm64.s
 6
 7// func getisar0() uint64
 8TEXT ·getisar0(SB), NOSPLIT, $0-8
 9	// get Instruction Set Attributes 0 into x0
10	// mrs x0, ID_AA64ISAR0_EL1 = d5380600
11	WORD $0xd5380600
12	MOVD R0, ret+0(FP)
13	RET
14
15// func getisar1() uint64
16TEXT ·getisar1(SB), NOSPLIT, $0-8
17	// get Instruction Set Attributes 1 into x0
18	// mrs x0, ID_AA64ISAR1_EL1 = d5380620
19	WORD $0xd5380620
20	MOVD R0, ret+0(FP)
21	RET