From: Gabe Black <gblack@eecs.umich.edu>
Date: Sun, 2 Dec 2007 08:02:51 +0000 (-0800)
Subject: X86: Make the 0xA0-0xA3 versions of mov use the right sized immediates.
X-Git-Tag: m5_2.0_beta5~55
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5de71e39d87179102c1b6fbde5df1b703188bcf1;p=gem5.git

X86: Make the 0xA0-0xA3 versions of mov use the right sized immediates.

--HG--
extra : convert_revision : a702403de29772618abb5bd5c5555279d91bdd59
---

diff --git a/src/arch/x86/isa/insts/general_purpose/data_transfer/move.py b/src/arch/x86/isa/insts/general_purpose/data_transfer/move.py
index 069d1010e..3b8608c48 100644
--- a/src/arch/x86/isa/insts/general_purpose/data_transfer/move.py
+++ b/src/arch/x86/isa/insts/general_purpose/data_transfer/move.py
@@ -60,12 +60,12 @@ microcode = '''
 #
 
 def macroop MOV_R_MI {
-    limm t1, imm
+    limm t1, imm, dataSize=asz
     ld reg, seg, [1, t0, t1]
 };
 
 def macroop MOV_MI_R {
-    limm t1, imm
+    limm t1, imm, dataSize=asz
     st reg, seg, [1, t0, t1]
 };
 
diff --git a/src/arch/x86/predecoder.cc b/src/arch/x86/predecoder.cc
index ace4a6b94..407a09ec0 100644
--- a/src/arch/x86/predecoder.cc
+++ b/src/arch/x86/predecoder.cc
@@ -270,7 +270,10 @@ namespace X86ISA
             //Figure out how big of an immediate we'll retreive based
             //on the opcode.
             int immType = ImmediateType[emi.opcode.num - 1][nextByte];
-            immediateSize = SizeTypeToSize[logOpSize - 1][immType];
+            if (emi.opcode.num == 1 && nextByte >= 0xA0 && nextByte <= 0xA3)
+                immediateSize = SizeTypeToSize[logAddrSize - 1][immType];
+            else
+                immediateSize = SizeTypeToSize[logOpSize - 1][immType];
 
             //Determine what to expect next
             if (UsesModRM[emi.opcode.num - 1][nextByte]) {