Benny Siegert
0598657881
cpu: avoid illegal instruction on netbsd/arm64
...
On NetBSD, this package tries to read a privileged register,
which results in a SIGILL. Use the same workaround as Android and
iOS. In the future, we could use sysctl(3) instead.
Update golang/go#30824
Change-Id: Ifd9aa2a2cf4dac43341d013602d1ccb4b8d6eb6d
Reviewed-on: https://go-review.googlesource.com/c/sys/+/235097
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com >
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com >
TryBot-Result: Gobot Gobot <gobot@golang.org >
2020-05-23 22:24:54 +00:00
Tobias Klauser
59e60aa80a
cpu: don't read ARM64 registers on Android
...
It seems like on Android we're not allowed in all cases to read the
registers ISAR0, ISAR1 and PFR0 to detect CPU features.
Fixes golang/go#36622
Change-Id: I577bd928a5a4dcd6e908cf059faa15fc0c80e3e5
Reviewed-on: https://go-review.googlesource.com/c/sys/+/215237
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com >
TryBot-Result: Gobot Gobot <gobot@golang.org >
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org >
2020-01-17 14:54:32 +00:00
Tobias Klauser
85b82a3add
cpu: support reading arm64 CPU feature registers
...
This allows to detect ARM64 CPU features on non-Linux systems. On Linux,
this is used in case /proc/self/auxv cannot be read.
Change-Id: I67d55e989f2beda0c05a97ca5e55781840a8e01c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/209478
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com >
TryBot-Result: Gobot Gobot <gobot@golang.org >
Reviewed-by: Ian Lance Taylor <iant@golang.org >
2019-12-04 07:21:56 +00:00
Tobias Klauser
e77772198c
cpu: fix build for GOARCH=arm64 on GOOS!=linux
...
The current implementation for arm64 only supports linux (through HWCaps
read from /proc/self/auxv) and fails to build e.g. on darwin/arm64.
Fixes golang/go#30237
Change-Id: I9f32a285760795441a829b0a81b2d5aff04e2dc4
Reviewed-on: https://go-review.googlesource.com/c/162797
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com >
Run-TryBot: Ian Lance Taylor <iant@golang.org >
Reviewed-by: Ian Lance Taylor <iant@golang.org >
TryBot-Result: Gobot Gobot <gobot@golang.org >
2019-02-14 21:44:11 +00:00
Meng Zhuo
70b957f3b6
cpu: add linux/arm64
...
Port from Go internal/cpu
Updates golang/go#25185
Change-Id: I8390980e38b61f6c428fafa0665a03952e7b00bb
Reviewed-on: https://go-review.googlesource.com/c/150718
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com >
TryBot-Result: Gobot Gobot <gobot@golang.org >
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org >
Reviewed-by: Martin Möhrmann <moehrmann@google.com >
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com >
2018-12-06 07:42:57 +00:00
Andreas Auernhammer
4adea008a5
cpu: new package
...
This CL introduces a new cpu package for CPU/platform feature detection.
The cpu package is basically a copy of `internal/cpu` of the standard library.
Revision: bf86aec25972f3a100c3aa58a6abcbcc35bdea49
This CL does not export ARM64 and PPC64 feature detection since at the moment
ARM64/PPC64 requires standard library support.
Updates golang/go#24843
Change-Id: I11bc1ca60b116e902c941b5887c00870dbb1f899
Reviewed-on: https://go-review.googlesource.com/107015
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org >
2018-04-30 17:35:09 +00:00
