MIPS: Added data tracing to simulator

src/mips/simulator-mips.h

Index: src/mips/simulator-mips.h
diff --git a/src/mips/simulator-mips.h b/src/mips/simulator-mips.h
index 0e9c2129837f3a9265c248ed0f37842bc15c2707..00b79b3cfe24799322c7419f905e1f70673e4ed4 100644
--- a/src/mips/simulator-mips.h
+++ b/src/mips/simulator-mips.h
@@ -268,6 +268,20 @@ class Simulator {
   inline double ReadD(int32_t addr, Instruction* instr);
   inline void WriteD(int32_t addr, double value, Instruction* instr);
 
+  // Helpers for data value tracing.
+  enum TraceType {
+    BYTE,
+    HALF,
+    WORD
+    // DWORD,
+    // DFLOAT - Floats may have printing issues due to paired lwc1's
+  };
+
+  void TraceRegWr(int32_t value);
+  void TraceMemWr(int32_t addr, int32_t value, TraceType t);
+  void TraceMemRd(int32_t addr, int32_t value);
+  EmbeddedVector<char, 128> trace_buf_;
+
   // Operations depending on endianness.
   // Get Double Higher / Lower word.
   inline int32_t GetDoubleHIW(double* addr);