From: Gabe Black <gblack@eecs.umich.edu>
Date: Fri, 20 Jul 2007 21:54:17 +0000 (-0700)
Subject: Fix function which calculates the carry flag.
X-Git-Tag: m5_2.0_beta4~297^2~23
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ee22bcd60940ed8cd23865e40ed8debc6c1f4288;p=gem5.git

Fix function which calculates the carry flag.

--HG--
extra : convert_revision : aeb4f2d4c3936089421dbe80647f28ae36178283
---

diff --git a/src/base/condcodes.hh b/src/base/condcodes.hh
index 10109e4ad..efff12dc8 100644
--- a/src/base/condcodes.hh
+++ b/src/base/condcodes.hh
@@ -32,6 +32,7 @@
 #define __BASE_CONDCODE_HH__
 
 #include "base/bitfield.hh"
+#include "base/trace.hh"
 
 /**
  * Calculate the carry flag from an addition. This should work even when
@@ -41,7 +42,9 @@ inline
 bool
 findCarry(int width, uint64_t dest, uint64_t src1, uint64_t src2) {
     int shift = width - 1;
-    return (~(dest >> shift) + (src1 >> shift) + (src2 >> shift)) & 0x2;
+    return ((~(dest >> shift) & 1) +
+            ((src1 >> shift) & 1) +
+            ((src2 >> shift) & 1)) & 0x2;
 }
 
 /**