1 files changed, 58 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/nios/vfork.S b/libc/sysdeps/linux/nios/vfork.S
new file mode 100644
index 000000000..22b3c30cd
--- /dev/null
+++ b/libc/sysdeps/linux/nios/vfork.S
@@ -0,0 +1,58 @@
+/*
+ * libc/sysdeps/linux/nios/vfork.S -- `vfork' syscall for linux/nios
+ *
+ *  Copyright (C) 2004  Microtronix Datacom Ltd
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License.  See the file COPYING.LIB in the main
+ * directory of this archive for more details.
+ * 
+ * Written by Wentao Xu <wentao@microtronix.com>
+ */
+#include <asm/unistd.h>
+#include "NM_Macros.S"
+
+#ifndef __NR_vfork
+#define __NR_vfork __NR_fork /* uClinux-2.0 only has fork which is vfork */
+#endif
+
+   .text
+   .align 2
+   .globl errno
+   .globl vfork
+   .globl __libc_vfork
+#if defined __HAVE_ELF__
+   .type    vfork,@function
+   .type    __libc_vfork,@function
+#endif
+vfork:
+__libc_vfork:
+	MOVIP	%g1, __NR_vfork
+	trap	63
+	
+	bgen	%g1, 12
+	not		%g1			/* (unsigned long) -4096 */
+	cmp		%o0, %g1
+	skps	cc_hi
+ 	  jmp	%o7
+	  nop
+	  
+fix_errno:
+	neg		%o0
+	save	%sp, -16
+	MOVIA	%g1, __errno_location@h
+	call	%g1
+	 nop
+	st	[%o0], %i0		/* store errno */
+	
+	xor %i0, %i0
+	subi %i0, 1		/* retval=-1 */
+	ret
+	 restore
+	
+		
+	
+
+
+
+