class my_driver. Typically configuration classes and data objects are derived from this class and are passed to different testbench components during the course of a simulation. // For example, "set_type_override_by_type" is actually a function defined in the class uvm_factory // A wrapper function. Tudor Timi Tudor Timi. One step beyond. If you use the uvm_top. Abstract- SystemVerilog provides several mechanisms for layering constraints in an object. def compare_field (self, name, lhs, rhs, size, radix = UVM_NORADIX): """ Function: compare_field Compares two integral values. But that's another debate. “virtual” keyword is common in all of them. System Verilog has virtual methods, virtual interfaces, and virtual classes. uvm_object has many common functions like print, copy and compare that are available to all its child classes and can be used out of the box if UVM automation macros are used inside the class definition. This guide is a way to apply the UVM 1. The uvm_object class is the base class for all UVM data and hierarchical classes. UVM automation macros can. uvm_comparer is the standalone class used to set a policy for doing comparisons and determines how miscompares are counted. If we already have a data object that we simply want to send to a sequencer, we can use `uvm_send. What is uvm_pool. Memory abstraction base class. uvm_config_db#(TYPE)::set(this,"*. Instances of these classes can pass any object. The usage of Factory involves three steps. The configuration object also allows for a higher-level view of the DUTs functions, providing test writers with an abstracted constraint layer not tied to the underlying registers. 2 User’s Guide. Steps involved are, Write callback class. The paper explains how UVM can be integrated with SystemC using the UVM-ML Open Architecture, a framework that enables interoperability between different. The utils macros define the infrastructure needed to enable the object/component for correct factory operation. event_object event_object_h; uvm_object temp_obj; . On calling `uvm_do () the above-defined 6 steps will be executed. Using macros like `uvm_do , `uvm_create, `uvm_send etc; Using existing methods from the base class a. There are three relevant uvm_report_error() function definitions in the UVM library: uvm_report_object. // For example, "set_type_override_by_type" is actually a function defined in the class uvm_factory // A. In other words, uvm_objects are transient, such as transactions that are created when needed and disappear when not used anymore. A memory may be accessible via more than one address map. S. Without it, registration would require an instance of the object itself. Sometimes a uvm_object is only needed by 1 other uvm_component, so, following object-oriented theory, we should use nested/inner classes. We are then calling the "set_finish_on_completion" method. The clone () method was declared in uvm_object and returns a handle of type uvm_object. Intro. 1 class-based verification library and reuse methodology for SystemVerilog. 2-2020 standard. Each of UVM’s policy classes performs a specific task for uvm_object-based objects: printing, comparing, recording, packing, and unpacking. factory. Improve this answer. The uvm_object_wrapper provides an abstract interface for creating object and component proxies. Step #1: Create a base callback class. In the begin-end block the driver calls seq_item_port. pyuvm is the Universal Verification Methodology implemented in Python instead of SystemVerilog. 1-289-695-1969 shihua. T(semaphore)) semaphore_pool To get the handle of. UVM also introduces a bunch of automation mechanisms for implementing print, copy, and compare objects and are defined using the field macros. user_callback callback_1; callback_1 = user_callback::type_id::create ("callback_1", this); In order to execute the callback method, register the callback object to the driver using. The UVM factory allows an object of one type to be overridden with an object of its derived type without changing the testbench structure. Is this achievable in UVM 1. The clone () method was declared in uvm_object and returns a handle of type. by The Art of Verification. Bases: uvm. ), which extends from uvm_object, benefit from using uvm utility macros (`uvm_component_utils, `uvm_object_utils)? As I understand, `uvm_component_utils and `uvm_object_utils are used to register a class w/ the factory so objects of that class can be over. class my_test extends uvm_test uvm_table_printer m_printer; //. The constructor of uvm_component adds a uvm_component parent argument which is used to create. e. Objects of this type will be used by sequences. System Verilog has virtual methods, virtual interfaces, and virtual classes. pseudo code looks like this: class seq_item extends uvm_sequence_item; rand class_a a; rand class_b b; endclass// seq_item class class_a extends uvm_object; rand bit field_1; rand bit field_2; endclass//class_a class class_b. A block represents a design hierarchy. Description. The uvm_resource#(type T) is a parameterized class that provides additional functions like read() and write() for resource operation. Then the UVM test bench utilizes virtual interfaces at dynamic driver, monitor class to access static interfaces [3], it retrieves the bind interface instance handle by reading uvm_resouce_db: Figure 2 – connect RTL and UVM by interface bind uvm_pkg::uvm_resource_db#( virtual svt_axi_slave_if)::read_by_name. . Objects of this type will be used by sequences. The code guideline for our verification environment is one class per file. Similarly, SystemVerilog casting means the conversion of one data type to another datatype. Block abstraction base class. gz. It also becomes easier to connect to design regardless of the number of ports it has since that information is encapsulated in an interface. The word “factory” in UVM refers to the substitution of any object or component in the verification environment without modifying any part of code in any testbench. How do we ensure that this Configuration class can easily be propagated across the testbench environment? In UVM, objects are often instantiated through the factory infrastructure. The purpose of uvm_void is to have a common parent type, so later on a generic container can be created that can hold any UVM related object. メンバの型によって、さまざまあります。. There are two ways to register an object with the UVM factory. We use uvm_config_db::set to put something into the database and uvm_config_db::get to retrieve information from the database. 08 Subroutines 01. uvm_config_db is a parameterized class that is parameterized with the data type of object that is being set or get. The concept of design patterns specifically for SystemVerilog object oriented programming (OOP) languages was popularized in 1994 by the book “Design Patterns: Elements of Reusable Object-Oriented Software. uvm_object::new says that m_inst_id == m_inst_count++. Inline constraints (i. 1 (IEEE 1800. pyuvm uses cocotb to interact with the simulator and schedule simulation events. Follow. The recommended method in UVM for creating components or transaction objects is to use the built-in method::type_id::create () instead of calling the constructor new () directly. UVM has a rich reporting facility. uvm_resource_pool rp = uvm_resource_pool::get(); uvm_resource#(T) _type = new(); uvm_queue#(uvm_resource_base) q; q =. The user can simply apply a different. The uvm_event class is directly derived from the uvm_object class. We would like to show you a description here but the site won’t allow us. SystemVerilog allows you to create modules and classes that are parameterized. It may be helpful to model this sequence as a hierarchical sequence where the generation of SIZED and QTAGGED packets are defined as flat sequences (generating only transaction items). In create method, we have to construct a new object of configuration class and update all the important fields and return it. By applying stimulus to the register model, the actual design registers will exhibit the changes applied by the stimulus. Yes, the UVM create() method calls new() constructor on the object without any arguments (string name is not passed in there). uvm_config_dbに渡すパラメータタイプはuvm_object_wrapperになります。これはuvm_config_dbにtypeを登録する場合の型です。 第一引数は通常はthisです。 第二引数は対象となるシーケンサのUVMの階層名+フェーズ名になります。From the application point of view, UVM Factory facilitates an object of one type to be substituted with an object of derived type without having to change the structure of the Testbench or modify the Testbench code. This article explains how to use a verbosity threshold to filter messages. We remember the file and line number, and the calling context (the. randomize with {…} or `uvm_do_with) permit specifying additional constraints when randomizing an object. The UVM 1. It makes sense to include print features in uvm_object so that all child classes will automatically gain access to those features. This guide is a way to apply the UVM 1. Using UVM in SystemC is a tutorial paper that presents the benefits and challenges of applying the Universal Verification Methodology (UVM) to SystemC-based verification environments. In the do_print function, we merely list the variables we want to print using the functions of uvm_printer class (lines 3 to 8). 2? I tried the following, which looked like it may work. 2 Comments. 02. Please see Register Abstraction for how each property is packed. Write this register if the DUT register is out-of-date with the desired/mirrored value in the abstraction class, as determined by the uvm_reg::needs_update () method. It is extended from its parent class uvm_resource_dbusing the macro uvm_add_to_seq_lib to add the sequence into the library [`uvm_add_to_seq_lib(rstSeqnc, cfgSeqncLib) ] gives us the feeling that its adding an instance of the sequence into an array present in the sequence library and this instance can be used later in the sequence library. get_next_item (t). 2 Class Reference represents the foundation used to create the UVM 1. The driver receives the item and drives it to the DUT through a virtual interface. This process is shown in the code below:Based on command line arguments like +link_speed and +lanes, a same set of test sequences can be run with all possible configurations. Typically configuration classes and data objects are derived from this class and are passed to different testbench components during the course of a simulation. svh" endpackage. Uvm_env. Register the callback class. If we expand the macro, it will call m_uvm_object_registry_param(T) define where there is a typedef of uvm_object_registry#(T). H. Description. Unfortunately this wont work yet because we have to register seq_item as follows `uvm_object_param_utils(seq_item#(A)). uvm_comparer is the standalone class used to set a policy for doing comparisons and determines how miscompares are counted. This class will also need to be able to get information from the config_db using hierarchical paths, and plain old uvm_objects don't have hierarchy. If the processes to trigger and wait for a trigger of an event are running in different components then it is required to share the event handle across the components. The call to the "uvm_root" static get method returns a reference to the top-level "uvm_root" object. UVM TestBench architecture. 03 Basic UVM Testbench 작성. The uvm_object class is the base class for all UVM data and hierarchical classes. See Usage section below for information on using uvm_component_registry. trigger. That means the default value is going to be used in new(). The factory (or to be precise, uvm_component_registry) will call new on behalf of you. The clone method calls the create() method followed by copy(). A cleaner implementation would have been for uvm_component_registry to be its own class. If you haven't included the file "monitor. Pack. Then you can do: typedef uvm_object_registry# (abc_test_seq,`STR (`SEQ_NAME (abc))) type_id;. Overriding a type involves the following steps: Firstly, the. You can use wildcards in the scope strings, but limit them to the end of the string to help performance. SNUG 2018 Page 6 SystemVerilog Virtual Classes, Methods, Interfaces Rev 1. You should be compiling classes into a package. wait_trigger_data. 1에서는 uvm_object에 대한 constructor가 필수 사항이 아니었지만, UVM 1. So, a data class derived from uvm_sequence_item or uvm_component will have access to the print() function as well. Policy classes are used to implement polymorphic operations that differ between built-in types and class-based types. A UVM sequence is just a SystemVerilog object that is constructed by calling new. It performs a deep copy. events. 02. If user wants to run a test with PCIe speed = Gen2 and lanes = x2, then this can be achieved simply by having +link_speed=gen2 and +lanes=2 on command line arguments, and in verification. drop_objection (uvm_object obj = null, string description = ” “, int count = 1) Drops number of objections for corresponding object with default count = 1 The copy method does a copy of the mentioned object. But, virtual_sequence and virtual_sequencer do not require any virtual keyword. Here is my thought/search process: I've found that uvm_factory class has a register method which registers a proxy object of a given type. Using automation macros. e. Classes deriving from UVMObject must implement methods such as create and get_type_name. Each resource has a set of scope. In UVM, is there anything in the uvm_object::compare method or uvm_comparer policy to implement a different comparison similar to the VMM compare() kind argument? For example, I would like a mechanism to be able to select between doing a full compare of all object members or a partial subset compare. The uvm_object_registry has static methods, which you call with the class::type_id::create() syntax. After the utility macro are the field automation macros in the form ‘uvm_field_*(data member, flag). Hence, it is required to have proper synchronization to avoid objects/components being called before they are created, The UVM phasing mechanism serves the purpose of synchronization. This method calls uvm_event_base::wait_trigger followed by get_trigger_data. uvm_component provide a set of convenience functions that call the uvm_factory member functions with a simplified interface. sv" into the same package you probably need to import the package where monitor. Unpack. base. TYPE’s constructor, if defined, must have default values on all it arguments. `uvm_field_utils_begin. uvm_report_object. An appropriate `uvm_field_* macro is required to use based on the data type of class properties. In this post, let’s think of it as a global associative array where the keys are strings of event names, and the values are the uvm_event objects. Unfortunately, SystemVerilog does not provide a good way to save Creates a new event object. A policy object can be passed along to set parameters like depth of comparison, verbosity, maximum number of. 2. A parent creates a child, and the uvm_component represents a hierarchal family tree in a database. class tx_item extends uvm_sequence_item;. 1. Using automation macros. 1. In this page, we'll try to execute a sequence item using the start_item/finish_item task. uvm_object - Data structures for testbench configuration; uvm_transaction - Stimulus generation & analysis; The values of the arguments of new method are used to create an entry in a linked list which the UVM uses to locate uvm_components in a pseudo hierarchy, this list is used in the messaging and configuration mechanisms. When someone wants to implement object names, what they'll do is pass a "string name" in the constructor of every object, so when the object is. You can also use get_id(), get_message() etc. Conclusion. this(this)) and obj. pyuvm uses cocotb to interact with the simulator and schedule simulation events. The first kind of queues store the handles to the uvm_resource objects that have the common field_name. 02 SystemVerilog 기초 1 01. Object and component types are registered with the factory using lightweight proxies to the actual objects and components being created. 02. Register the sequence with the factory using `uvm_object_utils. uvm_env is used to create and connect the uvm_components like driver, monitors , sequeners etc. On calling `uvm_do () the above-defined 6 steps will be executed. 01 Building blocks in SystemVerilog 01. ”. uvm_object_utils() is used to register a class as a UVM object, which is a generic container for data used in a UVM testbench. uvm_object is the one of the base classes from where almost all UVM classes are derived. There is often a need to copy, compare and print values in these classes. First we’ll handle blocking operations. 02. `uvm_do (Item/Seq) This macro takes seq_item or sequence as argument. A environment class can also be. uvm_test extends from uvm_component which extends from uvm_object. . the uvm_event class makes it easy by providing uvm_event_pool. Blocks. Add a comment. It is intended for verification engineers who want to use UVM 1. ; The user-defined subscriber is derived from uvm_subscriber that must define the write method (A write method is a pure virtual method that is declared in the uvm_subscriber class). com UVM consists of three main types of UVM classes, uvm_object; uvm_transaction; uvm_component; uvm_object. The UVM TLM library defines several abstract, transaction-level interfaces and the ports and exports that facilitate their use. The uvm_object or sequence overriding is similar to the uvm_component overriding factory mechanism that returns the derived object handle using a base class handle. The utility macros help to register each object with the factory. The important thing to remember is that each entry needs a unique field name or label (if the global scope is being used), or the path needs to 1 Answer. uvm_config_db#(TYPE)::set(this,"*. The record function of uvm_object calls the do_record. Sequences. It consists of all the basic methods, macros, identification fields in it. This enables us to monitor and record the transactions via the interface within this block. 1 Class Reference is a comprehensive document that describes the classes, methods, macros, and callbacks that constitute the UVM 1. You can: Derive your object_a from uvm_report_object instead of uvm_object. e. 613. It does a deep comparison. randomize() are the same method call. – dave_59. The uvm_object class is the base class for all uvm hierarchical classes such as uvm_report_object, uvm_component, uvm_transaction, uvm_sequence_item, uvm_sequence etc. The important thing to remember is that each entry needs a unique field name or label (if the global scope is being used), or the path needs to1 Answer. pyuvm implements the most often-used parts of the UVM while taking advantage of the fact that Python does not have strict typing and. UVM_Object: uvm_object is basically the main class. This means that all uvm_components are report objects, which is why you must call super(). Using do_record. UVM configuration provides. ” ) Prints an object and it is recursed depending on depth knob setting. The verification testbench will be developed in UVM and has the following block diagram: The sequence generates a random stream of input values that will be passed to the driver as a uvm_sequence_item. UVM Testbench 작성 00장 둘러보기 00. module traffic ( input pclk, input presetn, input [31:0] paddr, input [31:0] pwdata. The first three methods above take uvm_object_wrapper as their type argument (s). In Manufacturing, Casting is a process in which liquid metal is converted into the desired object. Type override in UVM factory. The compare() method compares two objects to return 1 in case of successful comparison. Factory is a singleton object and there is only one instance of the factory in a UVM environment. It derives from a uvm_driver and contains a run_phase. Its primary role is to define a set of methods for such common operations as create, copy, compare, print, and record . So UVM phases act as a synchronizing mechanism in the life cycle of a simulation. UVM automation macros also include mechanisms to pack class variables into a bit or byte stream, and unpack a bit stream and populate the class contents. Registration: While defining a class , its type has to be registered with the uvm factory. This object must be factory-enabled. Set the default sequencer that should execute this sequence. Note that all the functions are static and must be called using the :: scope operator. Classes deriving from uvm_object must implement the pure virtual methods such as create and get_type_name. For simple objects with no field macros, use `uvm_object_utils(TYPE) For simple. An appropriate `uvm_field_* macro is required to use based on the data type of class properties. Try these examples yourself. This can be useful for peak and off-peak times. You should create a new macro that add quotes around it input argument. During value or variable assignment to a variable, it is required to assign value or variable of the same data type. Its primary role is to define a set of methods for such common operations as create , copy, compare, print, and record . Macro. 1-289-695-1968 wayne. The argument will be evaluated before the quotes added. Gets the data, if any, provided by the last call to trigger. In the case of UVM based System Verilog testbench, class objects can be created at any time during the simulation based on the requirement. 1 features from the base classes to the. so when you print the object right after its construction you both should be almost the same. get_type_name isn't intended to print the name of a type. Here is a transaction class. uvm_object is the main class in which common functions to print, copy, and compare two objects of the same class are defined. Implementations of uvm_object::do_pack and uvm_object::do_unpack should regard this bit when performing their respective operation. 2 uvm_object constructor. The utility macros help to register each object with the factory. The driver receives the item and drives it to the DUT through a virtual interface. This is useful when you want to affect the with in a particular uvm_object can can be made scalable by overriding the do_print() method. Create a custom class inherited from uvm_env, register with factory, and call new. to drive the designated signals into DUT. A cleaner implementation would have been for uvm_component_registry to be its own class, that doesn’t extend uvm_object_wrapper, that instead creates an instance of a uvm_object_wrapper and registers it with the factory instead of itself. `uvm_create (Item/Seq) This macro creates the item or sequence. UVM pre-defines six verbosity levels; UVM_NONE to UVM_DEBUG. Imagine a UVM sequence generating 20-25 SIZED Ethernet packets followed by a PAUSE packet followed by 30-40 QTAGGED packets. Bases: object. 1 to create reusable and portable testbenches. A uvm_queue is created for every unique field_name. When a callback is attached to an event, the attached callback function/s is called each time the event is triggered. This is easily accomplished by defining the callback class as a child of uvm_callback: 1. virtual function void print_object (string name, uvm_object value, byte scope_separator = ” . For Design specification and Verification plan, refer to Memory Model. UVMObject (name: str) [source] ¶ Bases: sv_obj. Then,. Posted November 30, 2015. Strictly speaking, you can define the do_print without using the uvm_printer, but if you do so, you are not able to. Why the factory is important, though, and how it helps us achieve that goal may be. Type can be scalar objects, class handles, queues, lists, or even virtual interfaces) cntxt is the hierarchical starting point of where the database entry is. uvm_object The primary role of uvm_object class is to define a set of common utility functions like print, copy, compare and record which can be availed by any other class in a UVM testbench to save effort. Type can be scalar objects, class handles, queues, lists, or even virtual interfaces) cntxt is the hierarchical starting point of where the database entry is. class tx_item extends uvm_sequence_item;. You can think of any method call as having an implicit this argument. Blocking operationsPacking is just a way to convert your uvm_object into a bit array. Read more: UVM Object [uvm_object] In my last post, I recommended that you give every SystemVerilog object either a unique ID or name. com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals. Every class item derived from uvm_object will have a printer instance within it. UVMFactory is used to create objects of type UVMComponent and UVMObject (and their derived user-defined types). uvm_object クラスはアブストラクト・クラスである為、uvm_object のインスタンスを作る事は出 来ません。但し、uvm_object クラスのハンドルを定義する事は可能です。例えば、メソッドの引 数として generic なハンドルを宣言する為に使用する事. logger. trace_mode(): Set or get the trace mode for the objection object. 2. The primary purpose of a function is to return a value that can be used in an expression and cannot consume simulation time. The primary role of uvm_object class is to define a set of common utility functions like print, copy, compare and record which can be availed by any other class in a UVM testbench. There are different variations to this macro, just like `uvm_do_*. Add a comment. class uvm. do_pack. object queues and publishes a number of transfers equal to the total length of the burst size. uvm_object has many common functions like print, copy and compare that are available to all its child classes and can be used out of the box if UVM automation macros are used inside the class definition. This is a message generated by vcs: Error- [ICTTFC] Incompatible complex type usage Incompatible. class uvm. 09. Blocks ¶. Specialization #(virtual xbus_ifc) the data type of the value, which here is a virtual Xbus interface handle. Previous Article. write (), it basically cycles through. 2 Class Reference for information on the. They are implemented separately from uvm_object so that users can plug in different ways to print, compare, etc. To maintain uniformity in naming the components/objects, all the. UVM factory is a mechanism to improve flexibility and scalability of the testbench by allowing the user to substitute an existing class object by any of its inherited child class objects. The uvm_comparer adds up policy for the comparison and counts the number of miscompares if any. comp", "db_rx_agent_cfg", rx_cfg);The factory makes it is possible to override the type of uvm component /object or instance of a uvm component/object in2 ways. Parameterized classes in the UVM must be registered using the uvm_object_param_utils macro as below: `uvm_object_param_utils (som_util# (entry_w)) For more background, please see my discussion on this topic. What is a UVM Object? On the other hand, UVM objects are transient. On the other side, Static component are physical components which are present since the begining and. We have already seen how to use `uvm_do set of macros. 2 Class Reference is independent of any specific design processes and is complete for the construction ofThe UVM 1. Fundamentals of SystemVerilog Testbench Environment. 01 Simulation 환경 01장 SystemVerilog for Testbench 01. The document covers the UVM 1. The proxy enables efficient registration with the uvm_factory. uvm_object is the one of the base classes from where almost all UVM classes are derived. As you say, the UVM field automation macros generate a number of class utility methods such as copy, print and clone that include the registered fields. The uvm_config_db class provides a convenience interface on top of the uvm_resource_db to simplify the basic interface used for uvm_component instances. uvm config db set method void uvm_config_db#(type T = int)::set(uvm_component cntxt, string inst_name, string field_name, T value); Where, T is the type of element being configured. The source of this command can be traced to the following: (1) tb_driver is an extension of uvm_driver, which is an extension of uvm_component, which is a derivative of. Q&A for work. Also, uvm_pool is a singleton class , that explains why it has global access. path","label",value) (Adding other objects into the uvm_config_db is just as straightforward as adding a virtual interface. TimConclusion. UVM also introduces a bunch of automation mechanisms for implementing print , copy , and compare objects and. uvm_config_db::get () is used to fetch the value of the virtual interface and assign it to configuration object property. uvm_config_db is a parameterized class that is parameterized with the data type of object that is being set or get. In a previous article, copy, do_copy and use of automation macros to print were discussed. e. 02. argument object. UVM provides a transaction class that can be extended to create transaction objects that carry information between the DUT and the testbench. It allows for generic containers of objects to be created, similar to a void pointer in the C programming language. March 24, 2021. UVM TestBench architecture. I'm looking for a way to get all instances of a given uvm_object class, preferably filtering with hierarchy/scope and name. Writing user-defined callback, class user_defined_callback extends uvm_event_callback; --- endclass. How to use UVM Factory. It has only one object in the entire simulation space. The compare method returns 1 if comparison matches for the current object when it is compared with the R. ; Once you convert your testbench from passing individual values to passing config objects, you can see the bigger picture, which is that a testbench is configured and built from the top down, guided by the configuration. General guideline is: `uvm_do. Using do_pack/do_unpack. 02. A resource is any piece of information that is shared between more than one component or object. This flexibility allows comprehensive testing of different configurations using a single, reusable testbench, significantly reducing development time and effort. Then you can do: typedef uvm_object_registry# (abc_test_seq,`STR (`SEQ_NAME (abc))) type_id;. uvm_component_param_utils uvm_object_param_utils. Unlike registers, memories are not mirrored because of the potentially large data space: tests that walk the entire memory space would negate any benefit from sparse memory modelling techniques. This section defines the proxy component and object classes used by the factory. UVMFactory [source] ¶. The UVM 1. You are mixing up the terms parent and child with the principals of class inheritance. This keeps your code base stable,. For example, if the knobs says we're in a certain mode, and the sequence shall be constrained according to the mode, then the knobs must be available at sequence pre/post/randomize(), it is too late to read them from a. function new (string name, uvm_component parent); super. The name of an uvm_event is unique, you can use uvm_event_pool to get the instance of the uvm_event with the same name. The uvm_component_registry class extends uvm_object_wrapper and implements its create_component() function, but it also has many other functions related to registering itself with the factory and handling type overrides. The uvm_void class is the base class for all UVM classes. Share. data = 2; t1. endclass This means that our long list of assignments that the copy expands to would also contain: copy. UVM has a rich reporting facility.