Support loading shared libraries for custom operators

- Add a new command line option to allow users to specify a custom
  defined dll library
- Add a custom registry to store all registered libraries
- Add a dummy example (custom_op_example.cpp) for demonstrating this new
  feature

Signed-off-by: Jerry Ge <jerry.ge@arm.com>
Change-Id: I7c360835933f77e33fcbd772cabfe01d82282d47

1 files changed, 13 insertions, 7 deletions

diff --git a/reference_model/src/ops/custom.h b/reference_model/src/ops/custom.h
index d14c809..186d2c1 100644
--- a/reference_model/src/ops/custom.h
+++ b/reference_model/src/ops/custom.h
@@ -1,5 +1,5 @@
 
-// Copyright (c) 2020, ARM Limited.
+// Copyright (c) 2020, 2023 ARM Limited.
 //
 //    Licensed under the Apache License, Version 2.0 (the "License");
 //    you may not use this file except in compliance with the License.
@@ -16,23 +16,29 @@
 #ifndef OPS_CUSTOM_H
 #define OPS_CUSTOM_H
 
+#include "attribute.h"
+#include "custom_registry.h"
 #include "graph_node.h"
 
 using namespace tosa;
 
 namespace TosaReference
 {
-
 class OpCustom : public GraphNode
 {
 public:
-    OpCustom(SubgraphTraverser* sgt_, uint64_t id_);
-    virtual ~OpCustom();
+    OpCustom(SubgraphTraverser* sgt_, TosaAttributeBase* attribute_, uint64_t id_);
+    ~OpCustom();
 
-    virtual int checkTensorAttributes();
-    virtual int eval();
-};
+    int checkTensorAttributes();
+    int eval();
 
+protected:
+    TosaCustomAttribute* attribute;
+
+private:
+    CustomOpInterface* custom_op_ptr;
+};
 };    // namespace TosaReference
 
 #endif