From 5e6d28996ae80f2bd3afeadbb3454a9d1958e3a2 Mon Sep 17 00:00:00 2001
From: Ali Saidi <Ali.Saidi@ARM.com>
Date: Wed, 2 Jun 2010 12:58:13 -0500
Subject: ARM: Move PC mode bits around so they can be used for exectrace

---
 src/arch/arm/isa_traits.hh | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/arch/arm/isa_traits.hh')

diff --git a/src/arch/arm/isa_traits.hh b/src/arch/arm/isa_traits.hh
index 00c4c2932..4cffe3bec 100644
--- a/src/arch/arm/isa_traits.hh
+++ b/src/arch/arm/isa_traits.hh
@@ -121,6 +121,13 @@ namespace ArmISA
 
     // Memory accesses cannot be unaligned
     const bool HasUnalignedMemAcc = false;
+
+    // These otherwise unused bits of the PC are used to select a mode
+    // like the J and T bits of the CPSR.
+    static const Addr PcJBitShift = 33;
+    static const Addr PcTBitShift = 34;
+    static const Addr PcModeMask = (ULL(1) << PcJBitShift) |
+                                   (ULL(1) << PcTBitShift);
 };
 
 using namespace ArmISA;
-- 
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