From: Gabe Black <gblack@eecs.umich.edu>
Date: Wed, 25 Feb 2009 18:19:14 +0000 (-0800)
Subject: X86: Use the right portion of a register for stores.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5f0428ef9fc7acc5b1315f6c87202c1ee13f0b8b;p=gem5.git

X86: Use the right portion of a register for stores.
---

diff --git a/src/arch/x86/isa/microops/ldstop.isa b/src/arch/x86/isa/microops/ldstop.isa
index 097b0e311..a1aaddfe2 100644
--- a/src/arch/x86/isa/microops/ldstop.isa
+++ b/src/arch/x86/isa/microops/ldstop.isa
@@ -466,9 +466,9 @@ let {{
 
         microopClasses[name] = StoreOp
 
-    defineMicroStoreOp('St', 'Mem = Data;')
+    defineMicroStoreOp('St', 'Mem = pick(Data, 2, dataSize);')
     defineMicroStoreOp('Stfp', 'Mem = FpData.uqw;')
-    defineMicroStoreOp('Stupd', 'Mem = Data;',
+    defineMicroStoreOp('Stupd', 'Mem = pick(Data, 2, dataSize);',
             'Base = merge(Base, EA - SegBase, addressSize);',
             'Base = merge(Base, pkt->req->getVaddr() - SegBase, addressSize);');
     defineMicroStoreOp('Cda', 'Mem = 0;', mem_flags="Request::NO_ACCESS")