Lacking BASEFEE instruction support on neon-evm

[pcy190]

Bug Description

Since neon-evm uses the old fork of sputnik-vm [1], it doesn't support the proposal after london fork.

For example, when encounter BASEFEE instruction, neon-evm treats it as an invalid instruction and revert the execution. This may lead to the misbehavior of the contract which targets at the newer fork (e.g., London fork ).

[1]https://github.com/neonlabsorg/evm/tree/3ec2db790354baf39f464563751079894eeece26

Actual Behavior

neon-evm reverts the execution when encounters BASEFEE instruction.

Expected Behavior

neon-evm properly handles the BASEFEE instruction under EIP-1559.

[gigimon]

Hello, sorry for a long reply. We are waiting right now to support eip-1559.