Commit Graph

12 Commits

Author SHA1 Message Date
Zhou Peng b8ac64a581 all: this big patch remove whitespace from assembly files
Don't worry, this patch just remove trailing whitespace from
assembly files, and does not touch any logical changes.

Change-Id: Ia724ac0b1abf8bc1e41454bdc79289ef317c165d
Reviewed-on: https://go-review.googlesource.com/c/113595
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-10-03 15:28:51 +00:00
Richard Miller 1b49487692 syscall: eliminate aliasing of syscall error strings in Plan 9
To avoid allocation between entersyscall and exitsyscall in Plan 9,
syscall error strings retrieved from the OS were being stored in
a shared buffer for each M, leading to overwriting of error strings
by subsequent syscalls, and potential confusion if exitsyscall
switched to a different M.  Instead, the error string is now
retrieved to the G stack and then copied to a new allocated array
after exitsyscall.

A new test TestPlan9Syserr is provided to confirm the correction.

Fixes #13770
Fixes #24921

Change-Id: I013c4a42baae80d03a5b61d828396527189f5551
Reviewed-on: https://go-review.googlesource.com/111195
Reviewed-by: David du Colombier <0intro@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: David du Colombier <0intro@gmail.com>
2018-05-08 14:57:01 +00:00
Alex Brainman 438c8f6b53 syscall: make Exit call runtime.exit
syscall.Exit and runtime.exit do the same thing.
Why duplicate code?

CL 45115 fixed bug where windows runtime.exit was correct,
but syscall.Exit was broken. So CL 45115 fixed windows
syscall.Exit by calling runtime.exit.

Austin suggested that all OSes should do the same, and
this CL implements his idea.

While making changes, I discovered that nacl syscall.Exit
returned error

func Exit(code int) (err error)

and I changed it into

func Exit(code int)

like all other OSes. I assumed it was a mistake and it
is OK to do because cmd/api does not complain about it.

Also I changed plan9 runtime.exit to accept int32 just
like all other OSes do.

Change-Id: I12f6022ad81406566cf9befcc6edc382eebd413b
Reviewed-on: https://go-review.googlesource.com/66170
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: David du Colombier <0intro@gmail.com>
2017-09-27 01:10:05 +00:00
Ian Lance Taylor 67b39859ec runtime: remove unused global variable emptystring
Last runtime use was removed in https://golang.org/cl/133700043,
September 2014.

Replace plan9 syscall uses with plan9-specific variable.

Change-Id: Ifb910c021c1419a7c782959f90b054ed600d9e19
Reviewed-on: https://go-review.googlesource.com/55450
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-08-15 00:31:16 +00:00
David du Colombier 263a825b05 syscall: use name+(NN)FP on plan9/amd64
Generated from go vet.

Change-Id: Ie775c29b505166e0bd511826ef20eeb153a0424c
Reviewed-on: https://go-review.googlesource.com/32071
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-10-25 22:13:35 +00:00
Matthew Dempsky 9828b7c468 runtime, syscall: use FP instead of SP for parameters
Consistently access function parameters using the FP pseudo-register
instead of SP (e.g., x+0(FP) instead of x+4(SP) or x+8(SP), depending
on register size). Two reasons: 1) doc/asm says the SP pseudo-register
should use negative offsets in the range [-framesize, 0), and 2)
cmd/vet only validates parameter offsets when indexed from the FP
pseudo-register.

No binary changes to the compiled object files for any of the affected
package/OS/arch combinations.

Change-Id: I0efc6079bc7519fcea588c114ec6a39b245d68b0
Reviewed-on: https://go-review.googlesource.com/30085
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-30 05:40:43 +00:00
Josh Bleecher Snyder 71ab9fa312 all: fix assembly vet issues
Add missing function prototypes.
Fix function prototypes.
Use FP references instead of SP references.
Fix variable names.
Update comments.
Clean up whitespace. (Not for vet.)

All fairly minor fixes to make vet happy.

Updates #11041

Change-Id: Ifab2cdf235ff61cdc226ab1d84b8467b5ac9446c
Reviewed-on: https://go-review.googlesource.com/27713
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-08-25 18:52:31 +00:00
Russ Cox 653fb6d872 liblink: make GO_ARGS the default for functions beginning with ·
If there is a leading ·, assume there is a Go prototype and
attach the Go prototype information to the function.
If the function is not called from Go and does not need a
Go prototype, it can be made file-local instead (using name<>(SB)).

This fixes the current BSD build failures, by giving functions like
sync/atomic.StoreUint32 argument stack map information.

Fixes #8753.

LGTM=khr, iant
R=golang-codereviews, iant, khr, bradfitz
CC=golang-codereviews, r, rlh
https://golang.org/cl/142150043
2014-09-16 17:39:55 -04:00
Russ Cox 3b4bccc820 syscall: add GO_ARGS to Go-called assembly
Fixes sporadic linux/386 build failure (untyped args)
and probably some others we haven't observed yet.

Fixes #8727.

TBR=iant
R=golang-codereviews
CC=bradfitz, golang-codereviews, iant, khr, r
https://golang.org/cl/143930043
2014-09-14 22:27:03 -04:00
Russ Cox 860a645927 syscall: add #include "funcdata.h" to files modified in last CL
That's what defines GO_ARGS.

TBR=khr
CC=golang-codereviews
https://golang.org/cl/141460043
2014-09-12 00:55:24 -04:00
Russ Cox 4179439de8 syscall: make func Syscall use pointer maps from Go prototypes
Before, Syscall and friends were having their arguments
treated conservatively. Now they will use the Go prototype,
which will mean the arguments are not considered pointers
at all.

This is safe because of CL 139360044.

The fact that all these non-Solaris systems were using
conservative scanning of the Syscall arguments is why
the failure that prompted CL 139360044 was only
observed on Solaris, which does something completely different.
If we'd done this earlier, we'd have seen the Solaris
failure in more places.

LGTM=khr
R=khr
CC=golang-codereviews
https://golang.org/cl/144730043
2014-09-12 00:23:03 -04:00
Russ Cox c007ce824d build: move package sources from src/pkg to src
Preparation was in CL 134570043.
This CL contains only the effect of 'hg mv src/pkg/* src'.
For more about the move, see golang.org/s/go14nopkg.
2014-09-08 00:08:51 -04:00