From: Gabe Black <gblack@eecs.umich.edu>
Date: Wed, 5 Aug 2009 10:01:07 +0000 (-0700)
Subject: X86: Fix the computation of the bottom part of rotate right with carry.
X-Git-Tag: Calvin_Submission~173
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c8b1a4583e7062d0bf20a5d1c91f799c3bd79270;p=gem5.git

X86: Fix the computation of the bottom part of rotate right with carry.
---

diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa
index 1aa7c510b..e3ad164eb 100644
--- a/src/arch/x86/isa/microops/regop.isa
+++ b/src/arch/x86/isa/microops/regop.isa
@@ -768,7 +768,7 @@ let {{
                 uint64_t top = flags.cf << (dataSize * 8 - shiftAmt);
                 if(shiftAmt > 1)
                     top |= psrc1 << (dataSize * 8 - shiftAmt + 1);
-                uint64_t bottom = bits(psrc1, dataSize * 8, shiftAmt);
+                uint64_t bottom = bits(psrc1, dataSize * 8 - 1, shiftAmt);
                 DestReg = merge(DestReg, top | bottom, dataSize);
             }
             else