https://github.com/technius/toyrisc

A toy RISC-V simulator
https://github.com/technius/toyrisc

Last synced: 11 months ago
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A toy RISC-V simulator

• Host: GitHub
• URL: https://github.com/technius/toyrisc
• Owner: Technius
• License: apache-2.0
• Created: 2021-02-10T07:27:40.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2021-02-10T07:28:11.000Z (over 5 years ago)
• Last Synced: 2025-01-31T12:24:43.893Z (over 1 year ago)
• Language: Rust
• Size: 16.6 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# ToyRISC

This is a toy RISC-V simulator.

# Notes

* Only way to change privilege mode is through `ECALL` and `MRET`/`SRET`.

* `MRET`/`SRET` will change the privilege mode to the one in `MSTATUS.MPP`

* Traps switch machine to M-mode unless `mdeleg` is set.

* "privilege mode stack"?

* https://cdn2.hubspot.net/hubfs/3020607/An%20Introduction%20to%20the%20RISC-V%20Architecture.pdf