gsrlabs/sys
1
0
Fork 0
mirror of https://github.com/golang/sys.git synced 2026-02-08 11:46:04 +03:00
Code Issues Packages Projects Releases Wiki Activity
1,530 Commits 13 Branches 40 Tags
c7cbcbbfadac68670125ec96cc38e276ce69da74
Commit Graph

68 Commits

Author SHA1 Message Date
Kir Kolyshkin
f3ef2d1cfa cpu: remove the use of ioutil 
A trivial change.

Change-Id: I8121c263d5b8e9d0634d4f38847aff3cb770ef96
Reviewed-on: https://go-review.googlesource.com/c/sys/+/526301
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Kirill Kolyshkin <kolyshkin@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
 2023-09-14 15:30:27 +00:00
Meng Zhuo
38ebf4150f cpu: fix wrong cache line size of riscv64 
This CL follows CL526659 as cache line should be 64 Bytes

Change-Id: Id3a49dbfbfad6aeb439eb5e585fd2d6228a3d3ed
Reviewed-on: https://go-review.googlesource.com/c/sys/+/526935
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
 2023-09-13 01:34:38 +00:00
cui fliter
70233675ae cpu: remove repetitive word 
Change-Id: I6dbed409b549ab2cfc862094f19373816b7c0859
Reviewed-on: https://go-review.googlesource.com/c/sys/+/519076
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
 2023-08-16 01:58:07 +00:00
Anton Kuklin
eabbd5c036 cpu: add support for amx detection 
Added detection for x86 AMX,
including AMX-Tile, AMX-INT8 and AMX-BF16
instruction sets.

Change-Id: Ib3d663430b64d46b46b22bdd05d40f1992e37ee0
GitHub-Last-Rev: 7986ed6d4f
GitHub-Pull-Request: golang/sys#170
Reviewed-on: https://go-review.googlesource.com/c/sys/+/516815
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
 2023-08-14 16:42:18 +00:00
Tobias Klauser
352d8339e8 cpu: add test for IsBigEndian 
For golang/go#57237

Change-Id: I11d1c954f942ebd836c4deb9c710c40778dc5599
Reviewed-on: https://go-review.googlesource.com/c/sys/+/494858
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
 2023-05-16 16:00:41 +00:00
Tobias Klauser
c43fe1e1f5 cpu: define IsBigEndian on wasm 
For golang/go#57237

Change-Id: Ia2aa943e93c8df51cd08003535fa026d2bb8003e
Reviewed-on: https://go-review.googlesource.com/c/sys/+/494856
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
 2023-05-16 16:00:40 +00:00
Brad Fitzpatrick
2da1413846 cpu: get hwcap/auxv from the Go 1.21+ runtime 
Depends on https://go.dev/cl/458256

This change only does Linux for now.

Updates golang/go#57336

Change-Id: I0659697c1bdc6e2577c6251b964a0df32047ee12
Reviewed-on: https://go-review.googlesource.com/c/sys/+/465295
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
 2023-02-17 19:36:37 +00:00
Tobias Klauser
13fe000ef0 cpu: add IsBigEndian 
Copy the definition of x/sys/unix.isBigEndian to x/sys/cpu.

Updates golang/go#57237

Change-Id: Iefbf4303720445611de93b0a3ea365f8208c033b
Reviewed-on: https://go-review.googlesource.com/c/sys/+/463335
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Rob Pike <r@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
 2023-01-27 13:35:52 +00:00
Tobias Klauser
b8be2fde2a cpu: add //go:build line to cpu_gccgo_x86.c 
Change-Id: I597a83c767bf597f4d5c2ffdd7097f3cd6781f84
Reviewed-on: https://go-review.googlesource.com/c/sys/+/460158
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
 2023-01-05 18:34:43 +00:00
Brad Fitzpatrick
2204b6615f cpu: parse /proc/cpuinfo on linux/arm64 on old kernels when needed 
Updates tailscale/tailscale#5793
Fixes golang/go#57336

Change-Id: I4f8128bebcc58f265d447ecaaad2473aafa9131c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/458315
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Auto-Submit: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
 2022-12-20 02:54:02 +00:00
Joel Sing
3938a4f48c cpu: add support for ppc64 on platforms other than aix and linux 
This allows the cpu package to function on openbsd/ppc64.

Updates golang/go#56001

Change-Id: Iff306b6091da8f7dc28dd1bd2c9ba668b5318a67
Reviewed-on: https://go-review.googlesource.com/c/sys/+/439977
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
 2022-10-10 17:02:31 +00:00
Pure White
20c2bfdbfe cpu: fix cpu cacheLineSize for arm64 darwin(a.k.a. M1) 
The existing value for M1 is 64, which is the same as other arm64 cpus.
But the correct cacheLineSize for M1 should be 128, which can be
verified using the following command:

$ sysctl -a hw | grep cachelinesize
hw.cachelinesize: 128

Fixes golang/go#53075

Change-Id: I555716ed412cdc02941c8b1d9767952f7ad6678c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/408614
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Joedian Reid <joedian@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
 2022-08-23 22:43:34 +00:00
Joel Sing
3d627bb497 cpu: implement CPU feature detection for openbsd/arm64 
OpenBSD 7.1 onwards expose the aarch64 ISAR0 and ISAR1 registers via sysctl:

  $ sysctl machdep
  machdep.compatible=apple,j274
  machdep.id_aa64isar0=153421459058925856
  machdep.id_aa64isar1=1172796674562

Implement CPU feature detection for openbsd/arm64 based on this information.

Updates golang/go#31746

Change-Id: I6dc473d93ccff720582c05b75456de51269bc3e5
Reviewed-on: https://go-review.googlesource.com/c/sys/+/421799
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
 2022-08-08 15:39:00 +00:00
Meng Zhuo
5a0f0661e0 cpu: support non-linux OS for riscv64 
Fixes golang/go#53698

Change-Id: Ia954aed4445a47fb8f8a2c0b9869aa8c50f2de15
Reviewed-on: https://go-review.googlesource.com/c/sys/+/416394
Auto-Submit: Meng Zhuo <mzh@golangcn.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Meng Zhuo <mzh@golangcn.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Joel Sing <joel@sing.id.au>
 2022-07-08 08:52:39 +00:00
Ian Lance Taylor
9f5ed59c13 cpu: use xgetbv intrinsic 
Fixes golang/go#53302

Change-Id: I698ef44f90e2ec538ae4a057134c22c102a87ff8
Reviewed-on: https://go-review.googlesource.com/c/sys/+/411635
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
 2022-06-10 22:13:04 +00:00
Russ Cox
b5fbb4746d all: gofmt 
Gofmt to update doc comments to the new formatting.

For golang/go#51082.

Change-Id: I9a1c4b671c06820a1c383ee515f7884965fefa54
Reviewed-on: https://go-review.googlesource.com/c/sys/+/399602
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
 2022-04-29 23:34:32 +00:00
limeidan
0a89baf871 cpu: add basic support for GOARCH=loong64 
Updates golang/go#46229

Change-Id: Ibee284c742532dec798f4a5ecfe38b429825d7aa
Reviewed-on: https://go-review.googlesource.com/c/sys/+/399334
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
 2022-04-12 01:57:24 +00:00
Johan Van de Wauw
b874c991c1 cpu: fix typo in comments 
Change-Id: Icb2bacefd7d8656e0a5867cb90fe0ca06252ad0b
GitHub-Last-Rev: c6d3b42e1b
GitHub-Pull-Request: golang/sys#120
Reviewed-on: https://go-review.googlesource.com/c/sys/+/390934
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2022-03-10 02:08:20 +00:00
zhouguangyuan
97ca703d54 cpu: remove the declaration of function darwinSupportsAVX512 
The implement of darwinSupportsAVX512 has been removed in CL 361255.
But the command "go install -buildmode=shared std" failed because the
declaration of it is remained in cpu/cpu_gc_x86.go. It should be removed.

Update golang/go#49233
For golang/go#49942

Change-Id: I8fa7c61c20457e49414930029b9f026c335aa421
Reviewed-on: https://go-review.googlesource.com/c/sys/+/368994
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Trust: Ian Lance Taylor <iant@golang.org>
 2021-12-05 18:29:25 +00:00
Keith Randall
7861aae155 cpu: pretend AVX-512 is disabled on Darwin 
Darwin doesn't save/restore the AVX-512 mask registers when
processing a signal. Go generates lots of signals, which cause
the mask registers to randomly get clobbered. Better to pretend
that AVX-512 isn't supported.

Update golang/go#49233

Change-Id: I0dda77a6f205e10eefccd82e6f4f0f184dae42d9
Reviewed-on: https://go-review.googlesource.com/c/sys/+/361255
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Martin Möhrmann <martin@golang.org>
 2021-11-03 23:57:46 +00:00
Tobias Klauser
808efd93c3 cpu: enable TestARM64minimalFeatures on darwin/arm64 
Go 1.16 renamed the iOS port from darwin/arm64 to ios/arm64 and
darwin/arm64 was repurposed for the macOS ARM64 port (see
https://golang.org/doc/go1.16#darwin).

Now that Go 1.16 is the oldest supported release, the ios tag can be
used exclusively to detect iOS. Thus, TestARM64minimalFeatures which
ought to run on darwin/arm64 can now be enabled on that platform.

For golang/go#45696

Change-Id: Ic510fbf27dc813832507446201501df58c9f6f31
Reviewed-on: https://go-review.googlesource.com/c/sys/+/353530
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>
 2021-10-02 10:42:44 +00:00
zhangyunhao
63515b42dc cpu: add support for detecting cmpxchg16b 
Change-Id: I892de938e85205c0506aa82e31297b7a99e48e44
Reviewed-on: https://go-review.googlesource.com/c/sys/+/329450
Trust: Martin Möhrmann <martin@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Martin Möhrmann <martin@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <martin@golang.org>
 2021-08-23 07:06:55 +00:00
Tobias Klauser
b0526f3d87 cpu: set PPC64.IsPOWER8 for Power9 on aix 
This is in line with the behavior on linux.

Fixes golang/go#46040

Change-Id: I01ba1896d879425d12096ae67250d7e60beb7a99
Reviewed-on: https://go-review.googlesource.com/c/sys/+/318549
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Trust: Bryan C. Mills <bcmills@google.com>
Trust: Martin Möhrmann <moehrmann@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
 2021-05-11 11:38:59 +00:00
Vaughn Iverson
b677753862 cpu: fix AVX512 support detection on Darwin 
Summary: On darwin/amd64, it is not adequate to use OSXSAVE
bits to determine AVX512 availabilty. The reason is involved.
See github issue for details.

The fix consists of implementing Apple's recommended approach
using the process commpage cpu_capabilities bits to determine
availability of AVX512.

Fixes golang/go#43089

Change-Id: I1ba89965498863d268fbf2e427dbfd6429c7409f
Reviewed-on: https://go-review.googlesource.com/c/sys/+/285572
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
 2021-05-03 07:37:44 +00:00
Tobias Klauser
8feff5de77 cpu: add //go:build lines to assembly files 
Change-Id: I44c0bab1cc8a3b7ce59a1c690cb22046bca32bac
Reviewed-on: https://go-review.googlesource.com/c/sys/+/313689
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
 2021-04-26 21:46:56 +00:00
Russ Cox
9a76102bfb all: go fmt ./... 
Make all our package sources use Go 1.17 gofmt format
(adding //go:build lines).

Not strictly necessary but will avoid spurious changes
as files are edited.

Part of //go:build change (#41184).
See https://golang.org/design/draft-gobuild

Change-Id: I01667f826428426a39c84717d02efa25fa44553c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/294490
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Russ Cox <rsc@golang.org>
 2021-02-20 05:07:31 +00:00
Tamir Duberstein
0a15ea8d9b *: use more precise build tags 
s/!gccgo/gc/ in files which use gc-syntax assembly.

Change-Id: Iafc006cd60ad0e429cff182a05c790d80c380802
Reviewed-on: https://go-review.googlesource.com/c/sys/+/269717
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Than McIntosh <thanm@google.com>
 2020-11-13 13:57:34 +00:00
Joel Sing
201ba4db24 cpu: make x/sys/cpu build on non-linux mips64x 
Update golang/go#40995

Change-Id: Icab9865e59350c11da32bf8af2d0830001e41323
Reviewed-on: https://go-review.googlesource.com/c/sys/+/265959
Trust: Joel Sing <joel@sing.id.au>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
 2020-10-29 08:09:32 +00:00
Bill O'Farrell
708e7fb298 cpu: add support for zos/s390x 
This adds feature detection that works on the s390x running zos.
There are some differences with Linux (no hwcap, facilities vector available in-memory).
These changes should not affect other platforms.

Fixes golang/go#41984.

Change-Id: Ieabbfafd07367a346a4d279dde0f00aa3fc4321b
Reviewed-on: https://go-review.googlesource.com/c/sys/+/262477
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
Trust: Martin Möhrmann <moehrmann@google.com>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
 2020-10-28 09:49:53 +00:00
Tobias Klauser
ef9fd89ba2 cpu: read ARM64 registers using sysctl(3) on netbsd/arm64 
Use sysctl("machdep.cpu0.cpu_id") to retrieve the ARM64 cpu_id
information on netbsd/arm64. This includes the ISAR0, ISAR1 and PFR0
registers which can be parsed using existing functionality.

In order to use sysctl(3) without depending on x/sys/unix, some
functionality needed to be copied and slightly adjusted.

Change-Id: Ic9a133917ae5da516e6794f375bd7602d9bd3aa6
Reviewed-on: https://go-review.googlesource.com/c/sys/+/264378
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Trust: Benny Siegert <bsiegert@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
 2020-10-24 13:24:49 +00:00
Tobias Klauser
fb209a7c41 cpu: refactor parsing of ARM64 registers into separate function 
This will allow to re-use the implementation when adding support for
netbsd/arm64 which will retreive these register values using sysctl(3).

Change-Id: I2414cc4c6d1a91fff946466e4bf6d95d07f30137
Reviewed-on: https://go-review.googlesource.com/c/sys/+/264377
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
 2020-10-22 20:17:47 +00:00
Tobias Klauser
98379d014c cpu: avoid illegal instruction on openbsd/arm64 
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>
 2020-10-18 12:10:11 +00:00
Anton Kuklin
006507a758 cpu: add support for detecting AVX-512 
The existing implementation hasn't AVX-512 detection support.
This patch extends cpu package with such a functionality.

Fixes golang/go#41288

Change-Id: Iaddd57c5ff6d73360b77886458b9210b6c446859
Reviewed-on: https://go-review.googlesource.com/c/sys/+/257937
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
 2020-09-28 20:51:50 +00:00
Cherry Zhang
d9f96fdee2 all: add GOOS=ios 
Following CL 254740, this CL does it on x/sys.

Updates golang/go#38485.

Change-Id: I5eab09a9a87c87fc883b5701434415648fb28eb0
Reviewed-on: https://go-review.googlesource.com/c/sys/+/255557
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2020-09-23 18:26:05 +00:00
Joel Sing
d785dc2583 cpu: add missing build tag for linux 
The code in this file is specific to linux and does not build on other
mips64x platforms.

Change-Id: Ic27eedf06f39a7d2c51f5b261d957eed04e5df0b
Reviewed-on: https://go-review.googlesource.com/c/sys/+/249318
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2020-08-19 17:11:15 +00:00
Polina Osadcha
0cf7623e9d cpu: add GODEBUG options to disable use of instruction set extensions 
The GODEBUG environment variable can be used to disable usage of
specific processor features of Go programs that use the sys/cpu package.
This is useful for testing and benchmarking different code paths that
are guarded by sys/cpu variable checks.

Use of processor features can not be enabled through GODEBUG.

To disable usage of AVX and SSE41 cpu features on GOARCH amd64 use:
GODEBUG=cpu.avx=off,cpu.sse41=off

The special "all" option can be used to disable all options:
GODEBUG=all=off

This aligns the support of GODEBUG for sys/cpu with existing support
for GODEBUG in the Go standard library package internal/cpu.

Fixes golang/go#33963

Change-Id: I618b71af397bf06c57a49b2a300d032a16d05664
Reviewed-on: https://go-review.googlesource.com/c/sys/+/245237
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
 2020-08-05 06:55:43 +00:00
Tobias Klauser
f1bc736245 cpu: adjust godoc comment for hostByteOrder 
This was changed in CL 194646 to no longer depend on the encoding/binary
package. Adjust the godoc comment as well.

Change-Id: I1f23dc83a4c1256ebce8a283623f79e1bd00da51
Reviewed-on: https://go-review.googlesource.com/c/sys/+/238037
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2020-06-15 20:00:32 +00:00
Tobias Klauser
2780627062 cpu: add all GOARCHes supported by gccgo 
Extend hostByteOrder to return the correct byte order for all GOARCHes
currently supported by gccgo.

Change-Id: I019de33aa598c58fe75cd7ad55479e6fce82dd8e
Reviewed-on: https://go-review.googlesource.com/c/sys/+/237897
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2020-06-15 19:00:26 +00:00
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
Clément Chigot
1151b9dac4 cpu: add support for gccgo on aix 
Change-Id: Icb963d94baf7a1876ce89d0c5fe8cee04bb50629
Reviewed-on: https://go-review.googlesource.com/c/sys/+/233717
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
 2020-05-15 09:58:57 +00:00
Tobias Klauser
062a44052d cpu: add mips64x feature detection 
Follow CL 200579

Change-Id: Ibedd6569bda3d7836ccb77a7746ed0e5df13c633
Reviewed-on: https://go-review.googlesource.com/c/sys/+/221698
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2020-03-02 08:32:56 +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
344fec8e55 cpu: don't redeclare doinit on ppc64le 
Follow-up fix for CL 206859. Also order the +build line alphabetically.

Change-Id: I568c8b3ee03161d4341c151e4ec7150cade51077
Reviewed-on: https://go-review.googlesource.com/c/sys/+/206864
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2019-11-13 16:50:28 +00:00
Tobias Klauser
2f3576d2c5 cpu: add basic support for GOARCH=riscv64 
Updates golang/go#27532

Change-Id: I7250f272ff46f2765d498a97644fb570ae745a6c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/206860
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2019-11-13 15:47:02 +00:00
Tobias Klauser
e43da5d1f2 cpu: move empty doinit to own file 
Avoids each GOARCH having to define an empty doinit for GOOS=linux

Change-Id: Ic7cea1be4a35c31593c4f867478194b82dd53613
Reviewed-on: https://go-review.googlesource.com/c/sys/+/206859
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2019-11-13 15:46:56 +00:00
John Papandriopoulos
c990c680b6 cpu: support ARM feature detection on Linux 
Updates golang/go#33508

Change-Id: I9ea01090f5b4ac95c1a14881c305461bd4a7b5dd
Reviewed-on: https://go-review.googlesource.com/c/sys/+/190525
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
 2019-09-27 07:32:44 +00:00
Brad Fitzpatrick
7ad0cfa0b7 cpu: remove encoding/binary dependency 
It's unnecessarily heavy, bringing in reflect, etc.

I'd like for this package to become a leaf package with no
dependencies so we can use it from the Go runtime directly and remove
internal/cpu.

Change-Id: I1794854add9ad87cc13b685bae4a039e1449c22d
Reviewed-on: https://go-review.googlesource.com/c/sys/+/194646
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
 2019-09-11 20:15:28 +00:00
Tobias Klauser
749cb33bea cpu: add a space before build tag comment 
Add a space before build tag comments so it corresponds to the format
documented at https://golang.org/pkg/go/build/.

Change-Id: Ia7c724daf70d419dec52a652188799441053a867
Reviewed-on: https://go-review.googlesource.com/c/sys/+/193198
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2019-09-04 15:47:56 +00:00
Tobias Klauser
5219a1e1c5 cpu: add missing linkname for libc_getsystemcfg on aix/ppc64 
This fixes the aix/ppc64 build after CL 179178

Change-Id: Ie8d762b533c05d6ca262030b34ae137140896d44
Reviewed-on: https://go-review.googlesource.com/c/sys/+/179317
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
 2019-05-29 13:00:38 +00:00