+++ /dev/null
-// 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.
-
-//go:build (amd64 || amd64p32) && gc
-
-#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