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28 lines
578 B
ArmAsm
28 lines
578 B
ArmAsm
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !gccgo
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#include "textflag.h"
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TEXT ·RewindAndSetgid(SB),NOSPLIT,$0-0
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MOVL $·Baton(SB), BX
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// Rewind stack pointer so anything that happens on the stack
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// will clobber the test pattern created by the caller
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ADDL $(1024 * 8), SP
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// Ask signaller to setgid
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MOVL $1, (BX)
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// Wait for setgid completion
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loop:
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PAUSE
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MOVL (BX), AX
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CMPL AX, $0
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JNE loop
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// Restore stack
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SUBL $(1024 * 8), SP
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RET
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