FVM syscall improvements

Creator

Alex North

Created

Jun 10, 2022 1:26 AM

Project

FVM Capabilities & Standards

Stage

Graduated from Notebook

Rough ideas about enhancements to the FVM runtime to support more complex actors.

These should be filed as issues in the FVM Specs repo, or as FIP discussion.

Syscalls maybe for M2

• Origin (top-level caller) address (and nonce?)
• e.g. for 🏠Predictable actor address generation
• Receiver nonce (for account abstraction)
• Remove DeleteActor Embed GitHub
• Expose block.timestamp in seconds. Used by finance, lending protocols, etc.
• Even though it’s computable in normal circumstances, valuable in extreme ones
• Gas price, gas limit, basefee
• Balance() for any address (following Ethereum)
• Contract upgrade mechanism (change actor state tree root to include deployer)
• This is a big thing, not just a syscall

Later (After M2)

• Delegatecall – call code from other actor using this actor’s state storage
• Staticcall - similar, but no side effects
• Any primitives needed by rollups (optimistic verification games, zkSNARKs)
• Merkle Trees primitives - APIs for Merkle inclusion proofs ~Kubuxu