From 0e556e9dfbd9a3b3f06a023d4edf3b3678fd0a40 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Wed, 2 Jun 2010 12:58:17 -0500
Subject: ARM: Treat LDRD in ARM with an odd index as an undefined instruction.

---
 src/arch/arm/isa/formats/mem.isa | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/arch/arm/isa/formats')

diff --git a/src/arch/arm/isa/formats/mem.isa b/src/arch/arm/isa/formats/mem.isa
index aa8bbf55e..59a6f126a 100644
--- a/src/arch/arm/isa/formats/mem.isa
+++ b/src/arch/arm/isa/formats/mem.isa
@@ -122,8 +122,10 @@ def format AddrMode3() {{
           case 0x2:
             if (op1 & 0x1) {
                 %(ldrsb)s
-            } else {
+            } else if ((RT %% 2) == 0) {
                 %(ldrd)s
+            } else {
+                return new Unknown(machInst);
             }
           case 0x3:
             if (op1 & 0x1) {
-- 
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