Show Menu
Cheatography
  1. Home >
  2. Cheat Sheets >

Ethereum OPCODES Cheat Sheet (DRAFT) by

This is a draft cheat sheet. It is a work in progress and is not finished yet.

0s: Stop and Arithmetic Operations

0x00
STOP
Halts execution
0x01
ADD
Addition operation
0x02
MUL
Multip­lic­ation operation
0x03
SUB
Subtra­ction operation
0x04
DIV
Integer division operation
0x05
SDIV
Signed integer division operation (trunc­ated)
0x06
MOD
Modulo remainder operation
0x07
SMOD
Signed Modulo remainder operation
0x08
ADDMOD
Modulo addition operation
0x09
MULMOD
Modulo multip­lic­ation operation
0x0a
EXP
Expone­ntial operation
0x0b
SIGNEXTEND
Extend length of two’s complement signed integer

50s: Stack, Memory, Storage and Flow Operations

0x50
POP
Remove item from stack
0x51
MLOAD
Load word from memory
0x52
MSTORE
Save word to memory
0x53
MSTORES
Save byte to memory
0x54
SLOAD
Load word from storage
0x55
SSTORE
Save word to storage
0x56
JUMP
Alter the program counter
0x57
JUMPI
Condit­ionally alter the program counter
0x58
PC
Get the value of the program counter prior to the increment corres­ponding to this instru­ction
0x59
MSIZE
Get the size of active memory in bytes
0x5a
GAS
Get the amount of available gas, including the corres­ponding reduction
0x5b
JUMPDEST
Mark a valid destin­ation for jumps
 

10s: Comparison & Bitwise Logic Operations

0x10
LT
Less-than comparison
0x11
GT
Greate­r-than comparison
0x12
SLT
Signed less-than comparison
0x13
SGT
Signed greate­r-than comparison
0x14
EQ
Equality comparison
0x15
ISZERO
Simple not operator
0x16
AND
Bitwise AND operation
0x17
OR
Bitwise OR operation
0x18
XOR
Bitwise XOR operation
0x19
NOT
Bitwise NOT operation
0x1a
BYTE
Retrieve single byte from word

20s: SHA3

0x20
SHA3
Compute Keccak-256 hash

60s & 70s: Push Operations

0x60
PUSH1
Place 1-byte item on stack
0x61
PUSH2
Place 2-byte item on stack
0x7f
PUSH32
Place 32-byte (full word) item on stack

80s: Duplic­ation Operations

0x80
DUP1
Duplicate 1st stack item
0x81
DUP2
Duplicate 2nd stack item
0x8f
DUP16
Duplicate 16th stack item

90s: Exchange Operations

0x90
SWAP1
Exchange 1st and 2nd stack items
0x91
SWAP2
Exchange 1st and 3rd stack items
0x9f
SWAP16
Exchange 1st and 17th stack items
 

30s: Enviro­nmental Inform­ation

0x30
ADDRESS
Get address of currently executing account
0x31
BALANCE
Get balance of the given account
0x32
ORIGIN
Get execution origin­ation address
0x33
CALLER
Get caller address
0x34
CALLVALUE
Get deposited value by the instru­cti­on/­tra­nsa­ction respon­sible for this execution
0x35
CALLDA­TALOAD
Get input data of current enviro­nment
0x36
CALLDA­TASIZE
Get size of input data in current enviro­nment
0x37
CALLDA­TACOPY
Copy input data in current enviro­nment to memory
0x38
CODESIZE
Get size of code running in current enviro­nment
0x39
CODECOPY
Copy code running in current enviro­nment to memory
0x3a
GASPRICE
Get price of gas in current enviro­nment
0x3b
EXTCOD­ESIZE
Get size of an account’s code
0x3c
EXTCOD­ECOPY
Copy an account’s code to memory
 

a0s: Logging Operations

0xa0
LOG0
Append log record with no topics
0xa1
LOG1
Append log record with one topic
0xa2
LOG2
Append log record with two topics
0xa3
LOG3
Append log record with three topics
0xa4
LOG4
Append log record with four topics

f0s: System operations

0xf0
CREATE
Create a new account with associated code
0xf1
CALL
Messag­e-call into an account
0xf2
CALLCODE
Messag­e-call into this account with an altern­ative account’s code
0xf3
RETURN
Halt execution returning output data
0xf4
DELEGA­TECALL
Messag­e-call into this account with an altern­ative account’s code, but persisting the current values for sender and value
0xfe
INVALID
Designated invalid instru­ction
0xff
SELFDE­STRUCT
Halt execution and register account for later deletion

40s: Block Inform­ation

0x40
BLOCKHASH
Get the hash of one of the 256 most recent complete blocks
0x41
COINBASE
Get the block’s benefi­ciary address
0x42
TIMESTAMP
Get the block’s timestamp
0x43
NUMBER
Get the block’s number
0x44
DIFFICULTY
Get the block’s difficulty
0x45
GASLIMIT
Get the block’s gas limit