initial import

1 files changed, 78 insertions, 0 deletions

diff --git a/sysdeps/vax/bcopy.s b/sysdeps/vax/bcopy.s
new file mode 100644
index 0000000000..43bb93d216
--- /dev/null
+++ b/sysdeps/vax/bcopy.s
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 1983 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 "@(#)bcopy.s	5.6 (Berkeley) 6/1/90"
+#endif /* LIBC_SCCS and not lint */
+
+/* bcopy(from, to, size) */
+
+#include "DEFS.h"
+
+ENTRY(bcopy, R6)
+	movl	4(ap),r1
+	movl	8(ap),r3
+	movl	12(ap),r6
+	cmpl	r1,r3
+	bgtr	2f		# normal forward case
+	blss	3f		# overlapping, must do backwards
+	ret			# equal, nothing to do
+1:
+	subl2	r0,r6
+	movc3	r0,(r1),(r3)
+2:
+	movzwl	$65535,r0
+	cmpl	r6,r0
+	jgtr	1b
+	movc3	r6,(r1),(r3)
+	ret
+3:
+	addl2	r6,r1
+	addl2	r6,r3
+	movzwl	$65535,r0
+	jbr	5f
+4:
+	subl2	r0,r6
+	subl2	r0,r1
+	subl2	r0,r3
+	movc3	r0,(r1),(r3)
+	movzwl	$65535,r0
+	subl2	r0,r1
+	subl2	r0,r3
+5:
+	cmpl	r6,r0
+	jgtr	4b
+	subl2	r6,r1
+	subl2	r6,r3
+	movc3	r6,(r1),(r3)
+	ret