mirror of
https://github.com/golang/go
synced 2024-11-14 20:30:35 -07:00
e2b6cebcd6
This doesn't test much with gccgo, but at least it builds now, and the test does, unsurprisingly, pass. A proper test would require adding assembly files in GCC syntax for all platforms that gccgo supports, which would be infeasible. Also added copyright headers to the asm files. Change-Id: Icea5af29d7d521a0681506ddb617a79705b76d33 Reviewed-on: https://go-review.googlesource.com/9417 Reviewed-by: Minux Ma <minux@golang.org>
28 lines
595 B
ArmAsm
28 lines
595 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 amd64 amd64p32
|
|
// +build !gccgo
|
|
|
|
#include "textflag.h"
|
|
|
|
TEXT ·RewindAndSetgid(SB),NOSPLIT,$0-0
|
|
// Rewind stack pointer so anything that happens on the stack
|
|
// will clobber the test pattern created by the caller
|
|
ADDQ $(1024 * 8), SP
|
|
|
|
// Ask signaller to setgid
|
|
MOVL $1, ·Baton(SB)
|
|
|
|
// Wait for setgid completion
|
|
loop:
|
|
PAUSE
|
|
MOVL ·Baton(SB), AX
|
|
CMPL AX, $0
|
|
JNE loop
|
|
|
|
// Restore stack
|
|
SUBQ $(1024 * 8), SP
|
|
RET
|