[MIPS] New pattern in validator to detect jumps/branches in delay slots.

src/trusted/validator_mips/validator.h

 /*
  * 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_VALIDATOR_H
 #define NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_MIPS_VALIDATOR_H
 
 /*
@@ skipping 373 matching lines @@
     "kProblemPatternCrossesBundle";
 // A linking branch instruction is not in the last bundle slot.
 const char * const kProblemMisalignedCall = "kProblemMisalignedCall";
 // A data register is found in a branch delay slot.
 const char * const kProblemDataRegInDelaySlot = "kProblemDataRegInDelaySlot";
 // A jump to trampoline instruction which is not a start of a bundle.
 const char * const kProblemUnalignedJumpToTrampoline =
     "kProblemUnalignedJumpToTrampoline";
 // A jump register instruction is not guarded.
 const char * const kProblemUnsafeJumpRegister = "kProblemUnsafeJumpRegister";
-
+// Two consecutive branches/jumps. Branch/jump in the delay slot.
+const char * const kProblemBranchInDelaySlot = "kProblemBranchInDelaySlot";
 }  // namespace
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_MIPS_VALIDATOR_H