From 8cec87056824782e061eac152b83432899d9b6d9 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Thu, 15 Jul 2010 02:11:56 -0700
Subject: ARM: Make an SRS instruction with a bad mode cause an undefined
 instruction fault.

---
 src/arch/arm/isa/formats/mem.isa | 2 ++
 1 file changed, 2 insertions(+)

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

diff --git a/src/arch/arm/isa/formats/mem.isa b/src/arch/arm/isa/formats/mem.isa
index 59a6f126a..f7830eff3 100644
--- a/src/arch/arm/isa/formats/mem.isa
+++ b/src/arch/arm/isa/formats/mem.isa
@@ -282,6 +282,8 @@ def format Thumb32SrsRfe() {{
             }
         } else {
             const uint32_t mode = bits(machInst, 4, 0);
+            if (badMode((OperatingMode)mode))
+                return new Unknown(machInst);
             if (!add && !wb) {
                 return new %(srs)s(machInst, mode,
                         SrsOp::DecrementBefore, wb);
-- 
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