run_rtl: return simulator stdout and stderr outputs #105
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The simulator output logs are currently printed to the terminal, but not stored anywhere. In A-Core simulations, UART prints are output over STDERR stream. In order to post-process the values printed over serial, there needs to be a way to access the simulation logs from python. This commit changes run_rtl to return the stdout and stderr streams, so that they are accessible in rtl testbenches.
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This has been tested to work on questa and icarus verilog with A-Core hello world test. |
chiplet
changed the title
chiplet
changed the title
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Not quite ready yet. Simulator outputs are properly returned to the testbench, but stderr is no longer printed to terminal in real time. |
Last commit added support for capturing simulator textual outputs, but removed simulator output prints. This commit adds support for printing out simulator stdout and stderr while capturing the output. stdout and stderr are captured and printed one utf-8 code point at a time instead of byte-by-byt to support real-time printing of unicode symbols with multi-byte encoding.
chiplet
changed the title
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Now this should work as before, while also being able to capture and return the simulator textual outputs. |
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The simulator output logs are currently printed to the terminal, but not stored anywhere. In A-Core simulations, UART prints are output over STDERR stream. In order to post-process the values printed over serial, there needs to be a way to access the simulation logs from python.
This PR changes run_rtl to return the stdout and stderr streams, so that they are accessible in rtl testbenches.