ops

Documentation

Index

• Constants
• Variables
• func InstructionCount(code []byte) int
• func NewInstructionIterator(code []byte) *instructionIterator
• type OpCode
  • func StringToOp(str string) OpCode
  • func (op OpCode) IsCall() bool
  • func (op OpCode) IsPush() bool
  • func (op OpCode) Pops() []string
  • func (op OpCode) PushSize() int
  • func (op OpCode) Pushes() []string
  • func (op OpCode) Stackdelta() int
  • func (op OpCode) String() string

Constants

const (
	STOP       = OpCode(0x00)
	ADD        = OpCode(0x01)
	MUL        = OpCode(0x02)
	SUB        = OpCode(0x03)
	DIV        = OpCode(0x04)
	SDIV       = OpCode(0x05)
	MOD        = OpCode(0x06)
	SMOD       = OpCode(0x07)
	ADDMOD     = OpCode(0x08)
	MULMOD     = OpCode(0x09)
	EXP        = OpCode(0x0A)
	SIGNEXTEND = OpCode(0x0B)
)

0x0 range - arithmetic ops.

const (
	LT     = OpCode(0x10)
	GT     = OpCode(0x11)
	SLT    = OpCode(0x12)
	SGT    = OpCode(0x13)
	EQ     = OpCode(0x14)
	ISZERO = OpCode(0x15)
	AND    = OpCode(0x16)
	OR     = OpCode(0x17)
	XOR    = OpCode(0x18)
	NOT    = OpCode(0x19)
	BYTE   = OpCode(0x1A)
	SHL    = OpCode(0x1B)
	SHR    = OpCode(0x1C)
	SAR    = OpCode(0x1D)

	SHA3 = OpCode(0x20)
)

0x10 range - comparison ops.

const (
	ADDRESS        = OpCode(0x30)
	BALANCE        = OpCode(0x31)
	ORIGIN         = OpCode(0x32)
	CALLER         = OpCode(0x33)
	CALLVALUE      = OpCode(0x34)
	CALLDATALOAD   = OpCode(0x35)
	CALLDATASIZE   = OpCode(0x36)
	CALLDATACOPY   = OpCode(0x37)
	CODESIZE       = OpCode(0x38)
	CODECOPY       = OpCode(0x39)
	GASPRICE       = OpCode(0x3A)
	EXTCODESIZE    = OpCode(0x3B)
	EXTCODECOPY    = OpCode(0x3C)
	RETURNDATASIZE = OpCode(0x3D)
	RETURNDATACOPY = OpCode(0x3E)
	EXTCODEHASH    = OpCode(0x3F)
)

0x30 range - closure state.

const (
	BLOCKHASH   = OpCode(0x40)
	COINBASE    = OpCode(0x41)
	TIMESTAMP   = OpCode(0x42)
	NUMBER      = OpCode(0x43)
	DIFFICULTY  = OpCode(0x44)
	GASLIMIT    = OpCode(0x45)
	CHAINID     = OpCode(0x46)
	SELFBALANCE = OpCode(0x47)
)

0x40 range - block operations.

const (
	POP       = OpCode(0x50)
	MLOAD     = OpCode(0x51)
	MSTORE    = OpCode(0x52)
	MSTORE8   = OpCode(0x53)
	SLOAD     = OpCode(0x54)
	SSTORE    = OpCode(0x55)
	JUMP      = OpCode(0x56)
	JUMPI     = OpCode(0x57)
	PC        = OpCode(0x58)
	MSIZE     = OpCode(0x59)
	GAS       = OpCode(0x5A)
	JUMPDEST  = OpCode(0x5B)
	BEGINSUB  = OpCode(0x5c)
	RETURNSUB = OpCode(0x5d)
	JUMPSUB   = OpCode(0x5e)
)

0x50 range - 'storage' and execution.

const (
	CREATE       = OpCode(0xf0)
	CALL         = OpCode(0xf1)
	CALLCODE     = OpCode(0xf2)
	RETURN       = OpCode(0xf3)
	DELEGATECALL = OpCode(0xf4)
	CREATE2      = OpCode(0xf5)

	STATICCALL = OpCode(0xfa)

	REVERT       = OpCode(0xfd)
	SELFDESTRUCT = OpCode(0xff)
)

0xf0 range - closures.

Variables

var ValidOpcodes []OpCode

ValidOpcodes is the set of valid opcodes

Functions

func InstructionCount

func InstructionCount(code []byte) int

InstructionCount counts the number of instructions

func NewInstructionIterator

func NewInstructionIterator(code []byte) *instructionIterator

Create a new instruction iterator.

Types

type OpCode

type OpCode byte

OpCode is an EVM opcode

const (
	PUSH1 OpCode = 0x60 + iota
	PUSH2
	PUSH3
	PUSH4
	PUSH5
	PUSH6
	PUSH7
	PUSH8
	PUSH9
	PUSH10
	PUSH11
	PUSH12
	PUSH13
	PUSH14
	PUSH15
	PUSH16
	PUSH17
	PUSH18
	PUSH19
	PUSH20
	PUSH21
	PUSH22
	PUSH23
	PUSH24
	PUSH25
	PUSH26
	PUSH27
	PUSH28
	PUSH29
	PUSH30
	PUSH31
	PUSH32
)

0x60 through 0x7F range.

const (
	DUP1 OpCode = 0x80 + iota
	DUP2
	DUP3
	DUP4
	DUP5
	DUP6
	DUP7
	DUP8
	DUP9
	DUP10
	DUP11
	DUP12
	DUP13
	DUP14
	DUP15
	DUP16
)

0x80 range

const (
	SWAP1 OpCode = 0x90 + iota
	SWAP2
	SWAP3
	SWAP4
	SWAP5
	SWAP6
	SWAP7
	SWAP8
	SWAP9
	SWAP10
	SWAP11
	SWAP12
	SWAP13
	SWAP14
	SWAP15
	SWAP16
)

0x90 range

const (
	LOG0 OpCode = 0xa0 + iota
	LOG1
	LOG2
	LOG3
	LOG4
)

0xa0 range - logging ops.

const (
	PUSH OpCode = 0xb0 + iota
	DUP
	SWAP
)

unofficial opcodes used for parsing.

func StringToOp

func StringToOp(str string) OpCode

StringToOp finds the opcode whose name is stored in `str`.

func (OpCode) IsCall

func (op OpCode) IsCall() bool

func (OpCode) IsPush

func (op OpCode) IsPush() bool

IsPush specifies if an opcode is a PUSH opcode.

func (OpCode) Pops

func (op OpCode) Pops() []string

func (OpCode) PushSize

func (op OpCode) PushSize() int

func (OpCode) Pushes

func (op OpCode) Pushes() []string

func (OpCode) Stackdelta

func (op OpCode) Stackdelta() int

func (OpCode) String

func (op OpCode) String() string