Index: source/Plugins/Instruction/MIPS/EmulateInstructionMIPS.h
===================================================================
--- source/Plugins/Instruction/MIPS/EmulateInstructionMIPS.h
+++ source/Plugins/Instruction/MIPS/EmulateInstructionMIPS.h
@@ -80,6 +80,12 @@
         return SupportsEmulatingInstructionsOfTypeStatic (inst_type);
     }
 
+    uint32_t
+    ReadRegisterUnsigned (lldb::RegisterKind reg_kind,
+                                          uint32_t reg_num,
+                                          uint32_t fail_value, 
+                                          bool *success_ptr);
+
     bool
     ReadInstruction () override;
     
Index: source/Plugins/Instruction/MIPS/EmulateInstructionMIPS.cpp
===================================================================
--- source/Plugins/Instruction/MIPS/EmulateInstructionMIPS.cpp
+++ source/Plugins/Instruction/MIPS/EmulateInstructionMIPS.cpp
@@ -760,6 +760,20 @@
     return false;
 }
 
+uint32_t
+EmulateInstructionMIPS::ReadRegisterUnsigned (lldb::RegisterKind reg_kind,
+                                          uint32_t reg_num,
+                                          uint32_t fail_value, 
+                                          bool *success_ptr)
+{
+    RegisterValue reg_value;
+    if (ReadRegister (reg_kind, reg_num, reg_value))
+        return reg_value.GetAsUInt32(fail_value, success_ptr);
+    if (success_ptr)
+        *success_ptr = false;
+    return fail_value;
+}
+
 bool 
 EmulateInstructionMIPS::ReadInstruction ()
 {
@@ -817,7 +831,7 @@
     if (opcode_data == NULL)
         return false;
 
-    uint64_t old_pc = 0, new_pc = 0;
+    uint32_t old_pc = 0, new_pc = 0;
     const bool auto_advance_pc = evaluate_options & eEmulateInstructionOptionAutoAdvancePC;
 
     if (auto_advance_pc)