The signed decimal value of 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff8 is -8 right? why is it expected to convert to -10?

Hey w1nt3r,

First of all, thank you for the open sourcing this repo. The tests (and hints) have been very useful to me while building and testing Tiviem (Typescript EVM). I very recently passed all the test cases in this repo. However, I noticed that there are no test cases for testing gas, ether transfers, and state changes.

I am planning to write some tests to cover the above cases but I wanted to know if you have any plans / specifics about how to implement them.

My evm() function returns a Result object, as of now only success, stack, logs and returndata are tested against the expected values.

type Result = {
  success: boolean,
  stack: bigint[],
  memory: Uint8Array,
  gas: number,
  returndata: Uint8Array,
  logs: Log[],
  state: Map<bigint, AccountState>, // address -> AccountState
}

type AccountState = {
  balance: bigint,
  code?: {
    asm?: string,
    bin: Uint8Array
  },
  storage?: Map<bigint, bigint>,
  nonce: bigint
}

My plan I to compare test gas and state in a similar manner.

I just wanted to put this out there to thank you for open sourcing this repo and wanted some insight into if/how you plan on implementing the remaining tests.

Dencun Hardfork of Ethereum that took place on 13 March, 2024 added 2 new opcodes in the EVM namely TLOAD and TSTORE.

The opcodes respectively load and store words from transient storage.

I'd like to work on adding these opcodes to the repository.

In this testcase, the main contract called 0x10...c42 with retSize = 0. However the actual return size is 1, and in the expected result, the RETURNDATASIZE get result 1. I'm not sure if this obeys the evm rule.