UVM Runtime Elaboration
By performing the runtime elaboration of a UVM test, you can view testbench structures accurately reflecting the configuration at start of simulation.
Open the Command Palette and invoke the DVT: Select Verification Hierarchy Top command.
Pick a test and check Perform UVM runtime elaboration.
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Alternatively, press the button in the Verification Hierarchy view header. Any runtime elaboration of a test is automatically saved and you can later select it as a Verification Top.
The output of the UVM elaboration is printed in the Debug Console.
Click on the left vertical bar to add / remove a breakpoint. If you set any breakpoint in the source code, you are prompted to switch to the Run & Debug View. Elaboration suspends whenever a breakpoint is reached.
The Call Stack View presents all the threads and the current call stack.
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The Variables View presents variable values in the current scope.
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The Breakpoints View presents all the breakpoints and their enablement state.
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You can also add printouts without altering the source code by using logpoints. Right click on the left vertical bar and select Add Logpoint…. You can use only a $display()
statement in the editable textbox below the breakpoints list, however its arguments may call other functions.
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DPI-C Handling
The UVM runtime elaboration involves DPI-C method calls. DVT has a built-in library of UVM DPI-C implementations. To use it simply check the corresponding box in the verification top selection dialog.
If user-defined DPI-C functions are involved in the elaboration, specify the required shared objects in the Additional arguments textarea using the standard -sv_lib
, -sv_liblist
and -sv_root
flags, for example:
-sv_lib /path/to/dpic.so
From the Command Palette invoke the DVT: Generate DPI-C Stubs command to generate the DPI-C header stubs command required for the C compilation. Headers, C++ sources and object files are created in the dvt_dpic directory located in the currently opened folder (project root). Particularly if your project uses DPI-C exports you need to specify as additional argument the generated dvt_dpic/dvt_lib_export.so.