From: Andreas Schwab <schwab@suse.de>
Date: Wed, 13 Jan 1999 01:43:33 +0000 (+0000)
Subject: * sysdeps/unix/sysv/linux/m68k/vfork.S: New file.
X-Git-Tag: upstream/2.30~27734
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9ddcbe57b0727d9c222c10ac1484b76d2cd4b1e8;p=external%2Fglibc.git

* sysdeps/unix/sysv/linux/m68k/vfork.S: New file.

1999-01-13  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/m68k/vfork.S: New file.
---

diff --git a/ChangeLog b/ChangeLog
index 2bcda33..ed15a2e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+1999-01-13  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>
+
+	* sysdeps/unix/sysv/linux/m68k/vfork.S: New file.
+
 1999-01-13  Ulrich Drepper  <drepper@cygnus.com>
 
 	* sysdeps/i386/bits/string.h: Correct several bugs in various
diff --git a/sysdeps/unix/sysv/linux/m68k/vfork.S b/sysdeps/unix/sysv/linux/m68k/vfork.S
new file mode 100644
index 0000000..e5761f9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/m68k/vfork.S
@@ -0,0 +1,65 @@
+/* Copyright (C) 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@gnu.org>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+
+/* Clone the calling process, but without copying the whole address space.
+   The calling process is suspended until the new process exits or is
+   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
+   and the process ID of the new process to the old process.  */
+
+ENTRY (__vfork)
+
+#ifdef __NR_vfork
+
+	/* Pop the return PC value into A0.  */
+	movel	%sp@+, %a0
+
+	/* Stuff the syscall number in D0 and trap into the kernel.  */
+	movel	#SYS_ify (vfork), %d0
+	trap	#0
+	tstl	%d0
+	jmi	.Lerror		/* Branch forward if it failed.  */
+
+	/* Jump to the return PC.  */
+	jmp	%a0@
+
+.Lerror:
+	/* Push back the return PC.  */
+	movel	%a0,%sp@-
+
+	/* Check if vfork syscall is known at all.  */
+	movel	#-ENOSYS,%d1
+	cmpl	%d0,%d1
+	jne	SYSCALL_ERROR_LABEL
+
+#endif
+
+	/* If we don't have vfork, fork is close enough.  */
+
+	movel	#SYS_ify (fork), %d0
+	trap	#0
+	jmi	SYSCALL_ERROR_LABEL
+	rts
+
+PSEUDO_END (__vfork)
+
+weak_alias (__vfork, vfork)