EOF Implementers Call #63

[poojaranjan]

Meeting Info

Dec 11, 2024 , 15:00 UTC

Duration: 60 minutes

Zoom: https://us02web.zoom.us/j/88940506383?pwd=aTdsbHVyMTNDSUFHYmhTWlI2ZEVldz09

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Resources

• Current specs
  • EIP-7692: EVM Object Format (EOFv1) Meta
  • EIPs Included
    
    EIP-3540: EOF - EVM Object Format v1
    EIP-3670: EOF - Code Validation
    EIP-4200: EOF - Static relative jumps
    EIP-4750: EOF - Functions
    EIP-5450: EOF - Stack Validation
    EIP-6206: EOF - JUMPF and non-returning functions
    EIP-7480: EOF - Data section access instructions
    EIP-663: SWAPN, DUPN and EXCHANGE instructions
    EIP-7069: Revamped CALL instructions
    EIP-7620: EOF Contract Creation
    EIP-7698: EOF - Creation transaction
• EOF Meeting Playlist
• EVM (EOF) Taxonomy
• EOF explainers on PEEPanEIP
  
  EVM Object Format (EOF) with Danno Ferrin
  EVM Object Format (EIP-3540 & EIP-3670) with Andrei Maiboroda, Axic & Pawel
• EOF Testing Coverage Tracker
  • Implementation Matrix
• Solidity + EOF POC summary
• Matrix on evmobjectformat.org
• Prev meeting notes

Agenda

• Testing updates
• Client updates
• Compiler updates
• Spec Updates
• Other

Please add other agenda items or links to discuss.

Next call on Dec 25, 2024 or Jan 08, 2025

[frangio]

Discussion topic postponed from last call:

• Generic factories and deterministic deployment (probably relevant to counterfactual deployments)

[shemnon]

I'd like to talk about tracing and fuzzing.

Tracing:

• Updated EIP-7756
  • PC=0 is always the first byte of the container
  • Number and HexNumber are interchangable
  • OpCode now defaults to hex
  • gas members now default to number

reth and evmone will need to adjust to PC=0, geth, besu, and nethermind have already adjusted

Fuzzing:

• branch with WIP fuzzing tool shemnon/eof-fuzz
  • Needs a patch to goevmlab to work - Non-osaka EOF changes holiman/goevmlab#179
• Corpus is the single test set of reference tests
• 4 mutators currently (more to come)
  • Add PUSH0/POP
  • Replace PUSH value with in-test address
  • Replace PUSH value with "magic" number (mostly 2^x and friends)
  • Replace PUSH with random bytes (biased to shorter strings)
• Found 3 bugs so far
  • Besu 32/64 bug in EOFCREATE
  • Geth DATACOPY overflow
  • Nethermind EXT*CALL gas costing issues
• plan is to write more fuzzers to bring it on par with FuzzyVM, but for EOF.