github.com/huandu/go@v0.0.0-20151114150818-04e615e41150/misc/cgo/test/issue9400/asm_386.s (about)

     1  // Copyright 2014 The Go Authors.  All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build !gccgo
     6  
     7  #include "textflag.h"
     8  
     9  TEXT ·RewindAndSetgid(SB),NOSPLIT,$0-0
    10  	// Rewind stack pointer so anything that happens on the stack
    11  	// will clobber the test pattern created by the caller
    12  	ADDL	$(1024 * 8), SP
    13  
    14  	// Ask signaller to setgid
    15  	MOVL	$1, ·Baton(SB)
    16  
    17  	// Wait for setgid completion
    18  loop:
    19  	PAUSE
    20  	MOVL	·Baton(SB), AX
    21  	CMPL	AX, $0
    22  	JNE	loop
    23  
    24  	// Restore stack
    25  	SUBL	$(1024 * 8), SP
    26  	RET