# creates an exception if first word of calldata is 0
# Source: https://www.evm.codes/ playground for CALL
# 0x67600035600757FE5B60005260086018F3
# you can disassemble it with pyevmasm to get
# mnemonic creation code and logic (below)

PUSH1 0x0
CALLDATALOAD
PUSH1 0x7
JUMPI
INVALID
JUMPDEST