First two codegen tests passing on SIMMIPS

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 123 matching lines @@
 
 
 // Register aliases.
 const Register TMP = AT;  // Used as scratch register by assembler.
 const Register CTX = S6;  // Caches current context in generated code.
 const Register PP = S7;  // Caches object pool pointer in generated code.
 const Register SPREG = SP;  // Stack pointer register.
 const Register FPREG = FP;  // Frame pointer register.
 
 
+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) |
+    (1 << S4) | (1 << S5) | (1 << S6) | (1 << S7);
+const int kAbiPreservedCpuRegCount = 8;
+
+
 // Dart stack frame layout.
 static const int kLastParamSlotIndex = 3;
 static const int kFirstLocalSlotIndex = -2;
 
 
 // Values for the condition field.  // UNIMPLEMENTED.
 enum Condition {
   kNoCondition = -1,
   kMaxCondition = 16,
 };
@@ skipping 230 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_