diff --git a/coverage-tool/coverage-plugin/plugin_utils.cc b/coverage-tool/coverage-plugin/plugin_utils.cc
new file mode 100644
index 0000000..8eb3024
--- /dev/null
+++ b/coverage-tool/coverage-plugin/plugin_utils.cc
@@ -0,0 +1,65 @@
+/*!
+##############################################################################
+# Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+##############################################################################
+*/
+
+#include "plugin_utils.h"
+
+// Get a named trace source, create an event class from the named subset of
+// event fields, register the event class and look up the field indexes, and
+// register a user-provided MTI callback with the trace source.
+// Writes to error_ss and returns false if anything fails.
+bool RegisterCallbackForComponent(const MTI::ComponentTraceInterface *mti,
+                         const char *trace_source,
+                         ValueBind_t *value_bind, void *this_ptr,
+                         MTI::CallbackT callback,
+                         MTI::EventClass **ptr_event_class,
+                         std::stringstream &error_ss)
+{
+    const MTI::TraceSource *source = mti->GetTraceSource(trace_source);
+    if (!source) {
+        error_ss << "Could not find " << trace_source << " source";
+        return false;
+    }
+
+    MTI::FieldMask mask = 0;
+    const MTI::EventFieldType *eft;
+
+    for(unsigned i=0; value_bind[i].name != 0; i++) {
+        if ((eft = source->GetField( value_bind[i].name )) != 0) {
+            mask |= 1 << eft->GetIndex();
+        } else {
+            error_ss << "No field " << value_bind[i].name <<
+                    " found in " << trace_source << " trace source";
+            return false;
+        }
+    }
+
+    MTI::EventClass *event_class = source->CreateEventClass(mask);
+    if (!event_class) {
+        error_ss << "Unable to register event class for " <<
+                trace_source << " trace source.";
+        return false;
+    }
+    for(unsigned i=0; value_bind[i].name != 0; i++)
+    {
+        MTI::ValueIndex idx = event_class->GetValueIndex(value_bind[i].name);
+        if (idx != -1) {
+            *(value_bind[i].index) = idx;
+       } else {
+           error_ss << "Unable to GetValueIndex for " << trace_source
+                    << "." << value_bind[i].name << ".";
+           return false;
+       }
+    }
+    if (callback &&
+        event_class->RegisterCallback(callback, this_ptr) != MTI::MTI_OK) {
+        error_ss << "RegisterCallback failed for " << trace_source;
+        return false;
+    }
+    *ptr_event_class = event_class;
+    return true;
+}