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CV32E40P tracer shows wrong register outputs for the FPU register file #526

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mmatzev opened this issue Sep 24, 2020 · 1 comment
Open

CV32E40P tracer shows wrong register outputs for the FPU register file #526

mmatzev opened this issue Sep 24, 2020 · 1 comment
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Component:Verif For issues in the verification environment or test cases (e.g. for testbench, C code, etc.) PARAM:FPU Issue depends on the FPU parameter Type:Bug For bugs in the RTL, Documentation, Verification environment or Tool and Build system

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@mmatzev
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mmatzev commented Sep 24, 2020

The tracer does show xxxx instead of real register values.

Steps to Reproduce

Please provide:

  1. git hash --> 30002b4
  2. Core is used in a pulpino like enviroment together with the FPnew FPU
  3. The testFPU test from the pulp-platform/pulpino setup is executed.

image

Attached image shows that valid data are in the fp register file. The register file is never undefined but the tracer reports XXXXXXX

Note: The testFPU case is not running error free after update of the cv32e40p core to the current version. It was running well with the cv32e40p version from the 17th of April 2020. I'm currently investigating the problem.
@Silabs-ArjanB Silabs-ArjanB added Component:Verif For issues in the verification environment or test cases (e.g. for testbench, C code, etc.) Type:Bug For bugs in the RTL, Documentation, Verification environment or Tool and Build system PARAM:FPU Issue depends on the FPU parameter labels Sep 24, 2020
@Silabs-ArjanB
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Hi @mmatzev Thank you for the detailed report. If you have a fix for the tracer issue please feel free to issue a pull request

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Component:Verif For issues in the verification environment or test cases (e.g. for testbench, C code, etc.) PARAM:FPU Issue depends on the FPU parameter Type:Bug For bugs in the RTL, Documentation, Verification environment or Tool and Build system
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