From d294a657d50a41f1dcfe8c82f35f5eab27182731 Mon Sep 17 00:00:00 2001
From: Andrew Cagney <cagney@redhat.com>
Date: Tue, 2 Dec 1997 07:18:53 +0000
Subject: For "msbu", subtract unsigned product from ACC, Test.

---
 sim/d10v/simops.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

(limited to 'sim/d10v/simops.c')

diff --git a/sim/d10v/simops.c b/sim/d10v/simops.c
index e5a0825..64c8a33 100644
--- a/sim/d10v/simops.c
+++ b/sim/d10v/simops.c
@@ -1518,14 +1518,18 @@ OP_1800 ()
 void
 OP_3800 ()
 {
-  int64 tmp;
+  uint64 tmp;
+  uint32 src1;
+  uint32 src2;
 
   trace_input ("msbu", OP_ACCUM, OP_REG, OP_REG);
-  tmp = SEXT40 (State.regs[OP[1]] * State.regs[OP[2]]);
+  src1 = (uint16) State.regs[OP[1]];
+  src2 = (uint16) State.regs[OP[2]];
+  tmp = src1 * src2;
   if (State.FX)
-    tmp = SEXT40( (tmp << 1) & MASK40);
+    tmp = (tmp << 1);
 
-  State.a[OP[0]] = (SEXT40 (State.a[OP[0]]) - tmp) & MASK40;
+  State.a[OP[0]] = (State.a[OP[0]] - tmp) & MASK40;
   trace_output (OP_ACCUM);
 }
 
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