Saw-mon-and-Natalie

pc
calldataload
returndatasize
byte

push1 0x20
msize
mstore

push1 6

Saw-mon-and-Natalie

// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

contract Casting {
    function cast(uint256 x) public payable returns(address){
        return address(uint160(x));
    }
}

Saw-mon-and-Natalie

# --- evm quine ---
#     ⬜ => ⬜
                                            # --- stack ---
# immediate value for push15 
# is the compiled bytecode for part 2
push15 0x8060781b173d52386001606e8153f3     # c

# --- part 2 ---
dup1                                        # c c

Saw-mon-and-Natalie

# ▇ => ▇ + ▇
# Minimal runtime bytecode for a contract that mutates 
# into two child contracts and then self-destructs
# 1st child contract receives the call value
# 2nd child contract recevies the remaining balance
# author: Saw-mon and Natalie

# constructor payload for the spawned contract
 
#       ┏━━━━━━━━━━━━━━━━━━━ push1 RUNTIME_BYTECODE_LEN         # L

Saw-mon-and-Natalie

// SPDX-License-Identifier: MIT
// @author Saw-mon and Natalie

pragma solidity 0.8.13;
import "forge-std/Test.sol";

contract CoprimalityTest is Test {

    function verify_coprimality(uint120 a, uint120 b, int x, int y) internal pure {
        unchecked {

Saw-mon-and-Natalie

# `solc` compiler runtime output with extra bits removed.
# solcr [OPTIONS] <CONTRACT_FILE>
# example: solcr contract.sol

solcr() { 
    solc "$@" --bin-runtime --metadata-hash none | 
    grep '60806040' | 
    sed -e 's/.\{27\}$//g'; 
}

Saw-mon-and-Natalie

<div />

<style>
div {
  --0: transparent;
  --1: #8b3615;
  --2: #d49443;
  --3: #c57032;
  --4: #76290c;
  width: 1px;

Saw-mon-and-Natalie

%push(end_runtime - start_runtime)

dup1
%push(start_runtime)
returndatasize
codecopy


returndatasize
return

Saw-mon-and-Natalie

git clone --recursive [email protected]:quilt/etk.git
cd etk
cargo install etk-asm --path etk-asm --version 0.2.0-dev --features cli
cargo install etk-dasm --path etk-dasm --version 0.2.0-dev --features cli
cargo install etk-analyze --path etk-analyze --version 0.2.0-dev --features cli

Saw-mon-and-Natalie

Set-ExecutionPolicy RemoteSigned -scope CurrentUser
iwr -useb get.scoop.sh | iex

# if you don't have scoop installed, run the previous lines first

scoop bucket add scoop-crypto https://github.com/Saw-mon-and-Natalie/scoop-crypto
scoop install solana