date and time created 91/04/05 09:48:23 by donn

SCCS-vsn: lib/libc/vax/gen/udivsi3.s 6.1

diff --git a/usr/src/lib/libc/vax/gen/udivsi3.s b/usr/src/lib/libc/vax/gen/udivsi3.s
new file mode 100644 (file)
index 0000000..2f4323b
--- /dev/null
+++ b/usr/src/lib/libc/vax/gen/udivsi3.s
@@ -0,0 +1,39 @@
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+       .asciz "@(#)udivsi3.s   6.1 (Berkeley) %G%"
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Unsigned division, GCC flavor.
+ */
+
+#include "DEFS.h"
+
+#define        DIVIDEND        4(ap)
+#define        DIVISOR         8(ap)
+
+ENTRY(__udivsi3,0)
+       movl    DIVISOR,r2
+       jlss    Leasy           # big divisor: settle by comparison
+       movl    DIVIDEND,r0
+       jlss    Lhard           # big dividend: extended division
+       divl2   r2,r0           # small divisor and dividend: signed division
+       ret
+Lhard:
+       clrl    r1
+       ediv    r2,r0,r0,r1
+       ret
+Leasy:
+       cmpl    DIVIDEND,r2
+       jgequ   Lone            # if dividend is as big or bigger, return 1
+       clrl    r0              # else return 0
+       ret
+Lone:
+       movl    $1,r0
+       ret