mirror of
https://github.com/golang/go
synced 2024-11-15 01:20:28 -07:00
551af5f50a
This change preserves the ability to test misc/cgo/test in GOPATH mode, at the cost of indirection through a 'go test' subprocess. Updates #30228 Change-Id: I08de855e62278d30fa622b2f7478e43dd2ab0e96 Reviewed-on: https://go-review.googlesource.com/c/163418 Run-TryBot: Bryan C. Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
40 lines
763 B
ArmAsm
40 lines
763 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|NOFRAME,$0-0
|
|
// 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
|