mirror of
https://github.com/golang/go
synced 2024-11-05 15:46:11 -07:00
53fd522c0d
Follows suit with https://go-review.googlesource.com/#/c/20111. Generated by running $ grep -R 'Go Authors. All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go Authors. All/Go Authors. All/g' $F;done The code in cmd/internal/unvendor wasn't changed. Fixes #15213 Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f Reviewed-on: https://go-review.googlesource.com/21819 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
40 lines
756 B
ArmAsm
40 lines
756 B
ArmAsm
// Copyright 2014 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build !gccgo
|
|
|
|
#include "textflag.h"
|
|
|
|
TEXT ·RewindAndSetgid(SB),NOSPLIT,$-8-0
|
|
// Save link register
|
|
MOVD R30, R9
|
|
|
|
// Rewind stack pointer so anything that happens on the stack
|
|
// will clobber the test pattern created by the caller
|
|
ADD $(1024 * 8), RSP
|
|
|
|
// Ask signaller to setgid
|
|
MOVD $·Baton(SB), R0
|
|
MOVD $1, R1
|
|
storeloop:
|
|
LDAXRW (R0), R2
|
|
STLXRW R1, (R0), R3
|
|
CBNZ R3, storeloop
|
|
|
|
// Wait for setgid completion
|
|
MOVW $0, R1
|
|
MOVW $0, R2
|
|
loop:
|
|
LDAXRW (R0), R3
|
|
CMPW R1, R3
|
|
BNE loop
|
|
STLXRW R2, (R0), R3
|
|
CBNZ R3, loop
|
|
|
|
// Restore stack
|
|
SUB $(1024 * 8), RSP
|
|
|
|
MOVD R9, R30
|
|
RET
|