[MIPS] Add thread-pointer to data addressing register list.

src/trusted/validator_mips/inst_classes.h

 /*
- * Copyright 2012 The Native Client Authors.  All rights reserved.
- * Use of this source code is governed by a BSD-style license that can
- * be found in the LICENSE file.
- * Copyright 2012, Google Inc.
+ * Copyright (c) 2012 The Native Client Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
  */
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_MIPS_INST_CLASSES_H
 #define NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_MIPS_INST_CLASSES_H
 
 #include <stdint.h>
 #include "native_client/src/trusted/validator_mips/model.h"
 #include "native_client/src/include/portability.h"
 
 
@@ skipping 67 matching lines @@
     UNREFERENCED_PARAMETER(dest);
     UNREFERENCED_PARAMETER(mask);
     return false;
   }
 
   /*
    * The gpr register altered by the instruction.
    */
   virtual Register DestGprReg(const Instruction instr) const {
     UNREFERENCED_PARAMETER(instr);
-    return kRegisterNone;
+    return Register::None();
   }
 
   /*
    * May be used for instr's with immediate operand; like addiu or jal.
    */
   virtual uint32_t GetImm(const Instruction instr) const {
     UNREFERENCED_PARAMETER(instr);
     return -1;
   }
 
@@ skipping 40 matching lines @@
     UNREFERENCED_PARAMETER(addr);
     return 0;
   }
 
   /*
    * Used by jump register instructions; returns the register that holds the
    * address to jump to.
    */
   virtual Register TargetReg(const Instruction instr) const {
     UNREFERENCED_PARAMETER(instr);
-    return kRegisterNone;
+    return Register::None();
   }
 
   /*
    * Base address register, for load and store instructions.
    */
   virtual Register BaseAddressRegister(const Instruction instr) const {
     UNREFERENCED_PARAMETER(instr);
-    return kRegisterNone;
+    return Register::None();
   }
 
 
  protected:
   ClassDecoder() {}
   virtual ~ClassDecoder() {}
 };
 
 /*
  * Current MIPS NaCl halt (break).
@@ skipping 256 matching lines @@
  public:
   virtual ~Unrecognized() {}
   virtual SafetyLevel safety(const Instruction instr) const {
     UNREFERENCED_PARAMETER(instr);
     return FORBIDDEN;
   }
 };
 }  // namespace
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_MIPS_INST_CLASSES_H