gsrlabs/sys
1
0
Fork 0
mirror of https://github.com/golang/sys.git synced 2026-02-07 19:26:03 +03:00
Code Issues Packages Projects Releases Wiki Activity

cpu: avoid illegal instruction on openbsd/arm64

Browse Source 
On OpenBSD, this package tries to read a privileged register, which
results in a SIGILL. Use the same workaround as Android, iOS and NetBSD.

Update golang/go#31746

Change-Id: I981249310169bc30b018c1a157529a4e46597d81
Reviewed-on: https://go-review.googlesource.com/c/sys/+/263337
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Joel Sing <joel@sing.id.au>
This commit is contained in:
Tobias Klauser
2020-10-17 20:37:20 +02:00
committed by Tobias Klauser
parent b09fb700fb
commit 98379d014c
1 changed files with 4 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
cpu/cpu_arm64.go
View File

@@ -39,7 +39,7 @@ func initOptions() {
func archInit() {
switch runtime.GOOS {
case "android", "darwin", "ios", "netbsd":
case "android", "darwin", "ios", "netbsd", "openbsd":
// Android and iOS don't seem to allow reading these registers.
//
// NetBSD:
@@ -47,6 +47,9 @@ func archInit() {
// It can be read via sysctl(3). Example for future implementers:
// https://nxr.netbsd.org/xref/src/usr.sbin/cpuctl/arch/aarch64.c
//
// OpenBSD:
// See https://golang.org/issue/31746
//
// Fake the minimal features expected by
// TestARM64minimalFeatures.
ARM64.HasASIMD = true