ARM: Implement the V7 version of alignment checking.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/arch/arm/tlb.hh b/src/arch/arm/tlb.hh
index d2c035b31..d6fe981b9 100644
--- a/src/arch/arm/tlb.hh
+++ b/src/arch/arm/tlb.hh
@@ -86,6 +86,21 @@ struct TlbEntry
 
 class TLB : public BaseTLB
 {
+  public:
+    enum ArmFlags {
+        AlignmentMask = 0x7,
+
+        AlignByte = 0x0,
+        AlignHalfWord = 0x1,
+        AlignWord = 0x3,
+        AlignDoubleWord = 0x7,
+
+        AllowUnaligned = 0x8,
+        // Because zero otherwise looks like a valid setting and may be used
+        // accidentally, this bit must be non-zero to show it was used on
+        // purpose.
+        MustBeOne = 0x10
+    };
   protected:
     typedef std::multimap<Addr, int> PageTable;
     PageTable lookupTable;	// Quick lookup into page table