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base repository: PrescienceLab/fpvm
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head repository: PrescienceLab/fpvm
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compare: cr0ts-main
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  • 1 commit
  • 22 files changed
  • 1 contributor

Commits on Aug 29, 2025

  1. fptrapall CR0.ts trapping 

    Added a kernel module for tracking CR0.ts bit per process, and allowing FPVM to enable the bit.
This causes all usage of floating point state to fault.
Only been tested with Vanilla and Boxed, and this commit is just being made to save the state.
These changes need to be replicated in the architecture independant branch though.
To enable the kernel module run ./kernel/fptrapall_build.sh and ./kernel/fptrapall_setup.sh (the latter may need to be changed to refer to the actual current user instead of kjhayes)
Then the CONFIG_FPTRAPALL option can be set to tell FPVM to register itself with the kernel module when running.

(This has not been tested with more complicated programs that double_pendulum or multithreaded programs yet)
    @kjhayes
    kjhayes committed Aug 29, 2025
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