1 files changed, 147 insertions, 0 deletions
diff --git a/private/mvdm/softpc.new/base/ccpu386/mul.c b/private/mvdm/softpc.new/base/ccpu386/mul.c
new file mode 100644
index 000000000..5b4b9561c
--- /dev/null
+++ b/private/mvdm/softpc.new/base/ccpu386/mul.c
@@ -0,0 +1,147 @@
+/*[
+
+mul.c
+
+LOCAL CHAR SccsID[]="@(#)mul.c	1.8 11/09/94";
+
+MUL CPU functions.
+------------------
+
+]*/
+
+
+#include <insignia.h>
+
+#include <host_def.h>
+#include <xt.h>
+#include <c_main.h>
+#include <c_addr.h>
+#include <c_bsic.h>
+#include <c_prot.h>
+#include <c_seg.h>
+#include <c_stack.h>
+#include <c_xcptn.h>
+#include	<c_reg.h>
+#include <mul.h>
+#include <c_mul64.h>
+
+
+/*
+   =====================================================================
+   EXTERNAL FUNCTIONS START HERE.
+   =====================================================================
+ */
+
+
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+/* Unsigned multiply.                                                 */
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+GLOBAL VOID
+MUL8
+       	    	               
+IFN2(
+	IU32 *, pop1,	/* pntr to dst(low half)/lsrc operand */
+	IU32, op2	/* rsrc operand */
+    )
+
+
+   {
+   IU32 result;
+   IU32 top;
+
+   result = *pop1 * op2;	/* Do operation */
+   top = result >> 8 & 0xff;	/* get top 8 bits of result */
+   SET_AH(top);		/* Store top half of result */
+
+   if ( top )		/* Set CF/OF */
+      {
+      SET_CF(1); SET_OF(1);
+      }
+   else
+      {
+      SET_CF(0); SET_OF(0);
+      }
+
+#ifdef SET_UNDEFINED_MUL_FLAG
+   /* Do NOT Set all undefined flag.
+    * Microsoft VGA Mouse relies on preserved flags in IMUL
+    */
+#endif
+
+   *pop1 = result;	/* Return low half of result */
+   }
+
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+/* Unsigned multiply.                                                 */
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+GLOBAL VOID
+MUL16
+       	    	               
+IFN2(
+	IU32 *, pop1,	/* pntr to dst(low half)/lsrc operand */
+	IU32, op2	/* rsrc operand */
+    )
+
+
+   {
+   IU32 result;
+   IU32 top;
+
+   result = *pop1 * op2;	/* Do operation */
+   top = result >> 16 & WORD_MASK;	/* get top 16 bits of result */
+   SET_DX(top);		/* Store top half of result */
+
+   if ( top )		/* Set CF/OF */
+      {
+      SET_CF(1); SET_OF(1);
+      }
+   else
+      {
+      SET_CF(0); SET_OF(0);
+      }
+
+#ifdef SET_UNDEFINED_MUL_FLAG
+   /* Do NOT Set all undefined flag.
+    * Microsoft VGA Mouse relies on preserved flags in IMUL
+    */
+#endif
+
+   *pop1 = result;	/* Return low half of result */
+   }
+
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+/* Unsigned multiply.                                                 */
+/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
+GLOBAL VOID
+MUL32
+       	    	               
+IFN2(
+	IU32 *, pop1,	/* pntr to dst(low half)/lsrc operand */
+	IU32, op2	/* rsrc operand */
+    )
+
+
+   {
+   IU32 result;
+   IU32 top;
+
+   mulu64(&top, &result, *pop1, op2);	/* Do operation */
+   SET_EDX(top);		/* Store top half of result */
+
+   if ( top )		/* Set CF/OF */
+      {
+      SET_CF(1); SET_OF(1);
+      }
+   else
+      {
+      SET_CF(0); SET_OF(0);
+      }
+
+#ifdef SET_UNDEFINED_MUL_FLAG
+   /* Do NOT Set all undefined flag.
+    * Microsoft VGA Mouse relies on preserved flags in IMUL
+    */
+#endif
+
+   *pop1 = result;	/* Return low half of result */
+   }