https://github.com/jiegec/la-inst

Examine and discover LoongArch instructions
https://github.com/jiegec/la-inst

Last synced: 2 months ago
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Examine and discover LoongArch instructions

• Host: GitHub
• URL: https://github.com/jiegec/la-inst
• Owner: jiegec
• Created: 2023-10-04T18:30:34.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2023-10-26T09:26:45.000Z (about 1 year ago)
• Last Synced: 2024-10-26T22:48:41.818Z (3 months ago)
• Language: Rust
• Homepage:
• Size: 246 KB
• Stars: 14
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# la-inst

Examine the effects of LoongArch instructions and discover undocumented ones.

Usage:

```shell

# discover undocumented instructions

$ cargo run --bin fuzz

# examine the behavior of instruction

$ cargo run --bin examine 00008020

Inst: 0x00008020, rd = 0, rj = 1, rk = 0

Binutils: Ok(Some("x86inc.b $r1"))

Ptrace: Register changed

LBT 1: OLD=0x00007fffd2cd0c00 NEW=0x0000000000000000

LBT 4: OLD=0x0000000000000000 NEW=0x0000000000000080

```

## Acknowledgements

The method is inspired by [RensDofferhoff/iScanU](https://github.com/RensDofferhoff/iScanU).