Implements catch on MIPS.

runtime/vm/constants_mips.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_CONSTANTS_MIPS_H_
 #define VM_CONSTANTS_MIPS_H_
 
 namespace dart {
 
 enum Register {
@@ skipping 134 matching lines @@
 const Register SPREG = SP;  // Stack pointer register.
 const Register FPREG = FP;  // Frame pointer register.
 
 // The code that generates a comparison can be far away from the code that
 // generates the branch that uses the result of that comparison. In this case,
 // CMPRES is used for the result of the comparison.
 const Register CMPRES = T8;
 
 // Exception object is passed in this register to the catch handlers when an
 // exception is thrown.
-const Register kExceptionObjectReg = A0;
+const Register kExceptionObjectReg = V0;
 
 // Stack trace object is passed in this register to the catch handlers when
 // an exception is thrown.
-const Register kStackTraceObjectReg = A1;
+const Register kStackTraceObjectReg = V1;
 
 
 typedef uint32_t RegList;
 const RegList kAllCpuRegistersList = 0xFFFFFFFF;
 
 
 const RegList kAbiArgumentCpuRegs =
     (1 << A0) | (1 << A1) | (1 << A2) | (1 << A3);
 const RegList kAbiPreservedCpuRegs =
     (1 << S0) | (1 << S1) | (1 << S2) | (1 << S3) |
@@ skipping 333 matching lines @@
   static Instr* At(uword pc) { return reinterpret_cast<Instr*>(pc); }
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
 };
 
 }  // namespace dart
 
 #endif  // VM_CONSTANTS_MIPS_H_