diff --git a/runtime/stack_map.h b/runtime/stack_map.h
index fd22361..ec37699 100644
--- a/runtime/stack_map.h
+++ b/runtime/stack_map.h
@@ -104,10 +104,9 @@
         return "in fpu register";
       case kConstant:
         return "as constant";
-      default:
-        LOG(FATAL) << "Invalid location kind " << static_cast<int>(kind);
-        return nullptr;
     }
+    UNREACHABLE();
+    return nullptr;
   }
 
   LocationKind GetLocationKind(uint16_t register_index) const {
@@ -126,6 +125,23 @@
         kFixedSize + sizeof(LocationKind) + register_index * SingleEntrySize());
   }
 
+  int32_t GetStackOffsetInBytes(uint16_t register_index) const {
+    DCHECK(GetLocationKind(register_index) == kInStack);
+    // We currently encode the offset in bytes.
+    return GetValue(register_index);
+  }
+
+  int32_t GetConstant(uint16_t register_index) const {
+    DCHECK(GetLocationKind(register_index) == kConstant);
+    return GetValue(register_index);
+  }
+
+  int32_t GetMachineRegister(uint16_t register_index) const {
+    DCHECK(GetLocationKind(register_index) == kInRegister
+        || GetLocationKind(register_index) == kInFpuRegister);
+    return GetValue(register_index);
+  }
+
   static size_t SingleEntrySize() {
     return sizeof(LocationKind) + sizeof(int32_t);
   }