sync to ragge

1 files changed, 54 insertions, 0 deletions

diff --git a/lib/libc/arch/vax/string/bzero.S b/lib/libc/arch/vax/string/bzero.S
new file mode 100644
index 00000000000..17c7c38d41b
--- /dev/null
+++ b/lib/libc/arch/vax/string/bzero.S
@@ -0,0 +1,54 @@
+/*	$NetBSD: bzero.S,v 1.1 1996/05/19 15:57:40 ragge Exp $	*/
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+	.asciz "@(#)bzero.s	8.1 (Berkeley) 6/4/93"
+#endif /* LIBC_SCCS and not lint */
+
+/* bzero(base, length) */
+
+#include "DEFS.h"
+
+ENTRY(bzero, 0)
+	movl	4(ap),r3
+	jbr	2f
+1:
+	subl2	r0,8(ap)
+	movc5	$0,(r3),$0,r0,(r3)
+2:
+	movzwl	$65535,r0
+	cmpl	8(ap),r0
+	jgtr	1b
+	movc5	$0,(r3),$0,8(ap),(r3)
+	ret