From: guenther <guenther@openbsd.org>
Date: Tue, 21 Apr 2015 01:24:28 +0000 (+0000)
Subject: Eliminate the last uses of *fork's second syscall return register; the pid
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=11225f0757374d04e2b2014b86f63d569daf23c0;p=openbsd

Eliminate the last uses of *fork's second syscall return register; the pid
is zero in the child

ok deraadt@ miod@
---

diff --git a/lib/libc/arch/amd64/sys/tfork_thread.S b/lib/libc/arch/amd64/sys/tfork_thread.S
index f8ddde0662f..cd9937fa168 100644
--- a/lib/libc/arch/amd64/sys/tfork_thread.S
+++ b/lib/libc/arch/amd64/sys/tfork_thread.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tfork_thread.S,v 1.3 2012/08/22 17:19:34 pascal Exp $ */
+/*	$OpenBSD: tfork_thread.S,v 1.4 2015/04/21 01:24:28 guenther Exp $ */
 /*-
  * Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
  * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu>
@@ -61,8 +61,8 @@ ENTRY(__tfork_thread)
 	/*
 	 * Check to see if we are in the parent or child
 	 */
-	cmpl	$0, %edx
-	jnz	1f
+	cmpl	$0, %eax
+	jz	1f
 	ret
 
 	/*
diff --git a/lib/libc/arch/i386/sys/tfork_thread.S b/lib/libc/arch/i386/sys/tfork_thread.S
index 119cc0d3db3..6affc398e77 100644
--- a/lib/libc/arch/i386/sys/tfork_thread.S
+++ b/lib/libc/arch/i386/sys/tfork_thread.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tfork_thread.S,v 1.5 2012/12/22 21:07:50 kettenis Exp $ */
+/*	$OpenBSD: tfork_thread.S,v 1.6 2015/04/21 01:24:28 guenther Exp $ */
 /*-
  * Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
  * All rights reserved.
@@ -71,8 +71,8 @@ ENTRY(__tfork_thread)
 	/*
 	 * Check to see if we are in the parent or child
 	 */
-	cmpl	$0, %edx
-	jnz	1f
+	cmpl	$0, %eax
+	jz	1f
 	addl	$12, %esp
 	popl	%edi
 	popl	%esi