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by wallnuss
2064 days ago
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Having recently had the pleasure of having to debug JIT-compiled code with an ABI mismatch, I can't overstate how useful `rr` (https://github.com/mozilla/rr) can be to debug assembly. The ability to `rsi` e.g. reverse step instruction is very powerful. One tool that I started exploring is https://pernos.co/, the ability to do dataflow analysis is super cool. Let's you easily answer the question "How did this value get into this register". |
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It's really striking that it can't work on ARM though, due to an ARM architectural issue which x86 doesn't have.