You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
223 lines
9.7 KiB
223 lines
9.7 KiB
/*
|
|
This file is part of cpp-ethereum.
|
|
|
|
cpp-ethereum is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
cpp-ethereum is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/** @file Instruction.h
|
|
* @author Gav Wood <i@gavwood.com>
|
|
* @date 2014
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <libdevcore/Common.h>
|
|
#include <libevmcore/Exceptions.h>
|
|
|
|
namespace dev
|
|
{
|
|
namespace eth
|
|
{
|
|
|
|
/// Virtual machine bytecode instruction.
|
|
enum class Instruction: uint8_t
|
|
{
|
|
STOP = 0x00, ///< halts execution
|
|
ADD, ///< addition operation
|
|
MUL, ///< mulitplication operation
|
|
SUB, ///< subtraction operation
|
|
DIV, ///< integer division operation
|
|
SDIV, ///< signed integer division operation
|
|
MOD, ///< modulo remainder operation
|
|
SMOD, ///< signed modulo remainder operation
|
|
ADDMOD, ///< unsigned modular addition
|
|
MULMOD, ///< unsigned modular multiplication
|
|
EXP, ///< exponential operation
|
|
SIGNEXTEND, ///< extend length of signed integer
|
|
|
|
LT = 0x10, ///< less-than comparision
|
|
GT, ///< greater-than comparision
|
|
SLT, ///< signed less-than comparision
|
|
SGT, ///< signed greater-than comparision
|
|
EQ, ///< equality comparision
|
|
ISZERO, ///< simple not operator
|
|
AND, ///< bitwise AND operation
|
|
OR, ///< bitwise OR operation
|
|
XOR, ///< bitwise XOR operation
|
|
NOT, ///< bitwise NOT opertation
|
|
BYTE, ///< retrieve single byte from word
|
|
|
|
SHA3 = 0x20, ///< compute SHA3-256 hash
|
|
|
|
ADDRESS = 0x30, ///< get address of currently executing account
|
|
BALANCE, ///< get balance of the given account
|
|
ORIGIN, ///< get execution origination address
|
|
CALLER, ///< get caller address
|
|
CALLVALUE, ///< get deposited value by the instruction/transaction responsible for this execution
|
|
CALLDATALOAD, ///< get input data of current environment
|
|
CALLDATASIZE, ///< get size of input data in current environment
|
|
CALLDATACOPY, ///< copy input data in current environment to memory
|
|
CODESIZE, ///< get size of code running in current environment
|
|
CODECOPY, ///< copy code running in current environment to memory
|
|
GASPRICE, ///< get price of gas in current environment
|
|
EXTCODESIZE, ///< get external code size (from another contract)
|
|
EXTCODECOPY, ///< copy external code (from another contract)
|
|
|
|
PREVHASH = 0x40, ///< get hash of most recent complete block
|
|
COINBASE, ///< get the block's coinbase address
|
|
TIMESTAMP, ///< get the block's timestamp
|
|
NUMBER, ///< get the block's number
|
|
DIFFICULTY, ///< get the block's difficulty
|
|
GASLIMIT, ///< get the block's gas limit
|
|
|
|
POP = 0x50, ///< remove item from stack
|
|
MLOAD, ///< load word from memory
|
|
MSTORE, ///< save word to memory
|
|
MSTORE8, ///< save byte to memory
|
|
SLOAD, ///< load word from storage
|
|
SSTORE, ///< save word to storage
|
|
JUMP, ///< alter the program counter
|
|
JUMPI, ///< conditionally alter the program counter
|
|
PC, ///< get the program counter
|
|
MSIZE, ///< get the size of active memory
|
|
GAS, ///< get the amount of available gas
|
|
JUMPDEST, ///< set a potential jump destination
|
|
|
|
PUSH1 = 0x60, ///< place 1 byte item on stack
|
|
PUSH2, ///< place 2 byte item on stack
|
|
PUSH3, ///< place 3 byte item on stack
|
|
PUSH4, ///< place 4 byte item on stack
|
|
PUSH5, ///< place 5 byte item on stack
|
|
PUSH6, ///< place 6 byte item on stack
|
|
PUSH7, ///< place 7 byte item on stack
|
|
PUSH8, ///< place 8 byte item on stack
|
|
PUSH9, ///< place 9 byte item on stack
|
|
PUSH10, ///< place 10 byte item on stack
|
|
PUSH11, ///< place 11 byte item on stack
|
|
PUSH12, ///< place 12 byte item on stack
|
|
PUSH13, ///< place 13 byte item on stack
|
|
PUSH14, ///< place 14 byte item on stack
|
|
PUSH15, ///< place 15 byte item on stack
|
|
PUSH16, ///< place 16 byte item on stack
|
|
PUSH17, ///< place 17 byte item on stack
|
|
PUSH18, ///< place 18 byte item on stack
|
|
PUSH19, ///< place 19 byte item on stack
|
|
PUSH20, ///< place 20 byte item on stack
|
|
PUSH21, ///< place 21 byte item on stack
|
|
PUSH22, ///< place 22 byte item on stack
|
|
PUSH23, ///< place 23 byte item on stack
|
|
PUSH24, ///< place 24 byte item on stack
|
|
PUSH25, ///< place 25 byte item on stack
|
|
PUSH26, ///< place 26 byte item on stack
|
|
PUSH27, ///< place 27 byte item on stack
|
|
PUSH28, ///< place 28 byte item on stack
|
|
PUSH29, ///< place 29 byte item on stack
|
|
PUSH30, ///< place 30 byte item on stack
|
|
PUSH31, ///< place 31 byte item on stack
|
|
PUSH32, ///< place 32 byte item on stack
|
|
|
|
DUP1 = 0x80, ///< copies the highest item in the stack to the top of the stack
|
|
DUP2, ///< copies the second highest item in the stack to the top of the stack
|
|
DUP3, ///< copies the third highest item in the stack to the top of the stack
|
|
DUP4, ///< copies the 4th highest item in the stack to the top of the stack
|
|
DUP5, ///< copies the 5th highest item in the stack to the top of the stack
|
|
DUP6, ///< copies the 6th highest item in the stack to the top of the stack
|
|
DUP7, ///< copies the 7th highest item in the stack to the top of the stack
|
|
DUP8, ///< copies the 8th highest item in the stack to the top of the stack
|
|
DUP9, ///< copies the 9th highest item in the stack to the top of the stack
|
|
DUP10, ///< copies the 10th highest item in the stack to the top of the stack
|
|
DUP11, ///< copies the 11th highest item in the stack to the top of the stack
|
|
DUP12, ///< copies the 12th highest item in the stack to the top of the stack
|
|
DUP13, ///< copies the 13th highest item in the stack to the top of the stack
|
|
DUP14, ///< copies the 14th highest item in the stack to the top of the stack
|
|
DUP15, ///< copies the 15th highest item in the stack to the top of the stack
|
|
DUP16, ///< copies the 16th highest item in the stack to the top of the stack
|
|
|
|
SWAP1 = 0x90, ///< swaps the highest and second highest value on the stack
|
|
SWAP2, ///< swaps the highest and third highest value on the stack
|
|
SWAP3, ///< swaps the highest and 4th highest value on the stack
|
|
SWAP4, ///< swaps the highest and 5th highest value on the stack
|
|
SWAP5, ///< swaps the highest and 6th highest value on the stack
|
|
SWAP6, ///< swaps the highest and 7th highest value on the stack
|
|
SWAP7, ///< swaps the highest and 8th highest value on the stack
|
|
SWAP8, ///< swaps the highest and 9th highest value on the stack
|
|
SWAP9, ///< swaps the highest and 10th highest value on the stack
|
|
SWAP10, ///< swaps the highest and 11th highest value on the stack
|
|
SWAP11, ///< swaps the highest and 12th highest value on the stack
|
|
SWAP12, ///< swaps the highest and 13th highest value on the stack
|
|
SWAP13, ///< swaps the highest and 14th highest value on the stack
|
|
SWAP14, ///< swaps the highest and 15th highest value on the stack
|
|
SWAP15, ///< swaps the highest and 16th highest value on the stack
|
|
SWAP16, ///< swaps the highest and 17th highest value on the stack
|
|
|
|
LOG0 = 0xa0, ///< Makes a log entry; no topics.
|
|
LOG1, ///< Makes a log entry; 1 topic.
|
|
LOG2, ///< Makes a log entry; 2 topics.
|
|
LOG3, ///< Makes a log entry; 3 topics.
|
|
LOG4, ///< Makes a log entry; 4 topics.
|
|
|
|
CREATE = 0xf0, ///< create a new account with associated code
|
|
CALL, ///< message-call into an account
|
|
CALLCODE, ///< message-call with another account's code only
|
|
RETURN, ///< halt execution returning output data
|
|
SUICIDE = 0xff ///< halt execution and register account for later deletion
|
|
};
|
|
|
|
/// @returns the PUSH<_number> instruction
|
|
inline Instruction pushInstruction(unsigned _number)
|
|
{
|
|
if (asserts(1 <= _number && _number <= 32))
|
|
BOOST_THROW_EXCEPTION(InvalidOpcode() << errinfo_comment("Invalid PUSH instruction requested."));
|
|
return Instruction(unsigned(Instruction::PUSH1) + _number - 1);
|
|
}
|
|
|
|
/// @returns the DUP<_number> instruction
|
|
inline Instruction dupInstruction(unsigned _number)
|
|
{
|
|
if (asserts(1 <= _number && _number <= 16))
|
|
BOOST_THROW_EXCEPTION(InvalidOpcode() << errinfo_comment("Invalid DUP instruction requested."));
|
|
return Instruction(unsigned(Instruction::DUP1) + _number - 1);
|
|
}
|
|
|
|
/// @returns the SWAP<_number> instruction
|
|
inline Instruction swapInstruction(unsigned _number)
|
|
{
|
|
if (asserts(1 <= _number && _number <= 16))
|
|
BOOST_THROW_EXCEPTION(InvalidOpcode() << errinfo_comment("Invalid SWAP instruction requested."));
|
|
return Instruction(unsigned(Instruction::SWAP1) + _number - 1);
|
|
}
|
|
|
|
/// Information structure for a particular instruction.
|
|
struct InstructionInfo
|
|
{
|
|
std::string name; ///< The name of the instruction.
|
|
int additional; ///< Additional items required in memory for this instructions (only for PUSH).
|
|
int args; ///< Number of items required on the stack for this instruction (and, for the purposes of ret, the number taken from the stack).
|
|
int ret; ///< Number of items placed (back) on the stack by this instruction, assuming args items were removed.
|
|
bool sideEffects; ///< false if the only effect on the execution environment (apart from gas usage) is a change to a topmost segment of the stack
|
|
};
|
|
|
|
/// Information on all the instructions.
|
|
InstructionInfo instructionInfo(Instruction _inst);
|
|
|
|
/// check whether instructions exists
|
|
bool isValidInstruction(Instruction _inst);
|
|
|
|
/// Convert from string mnemonic to Instruction type.
|
|
extern const std::map<std::string, Instruction> c_instructions;
|
|
|
|
/// Convert from EVM code to simple EVM assembly language.
|
|
std::string disassemble(bytes const& _mem);
|
|
|
|
}
|
|
}
|
|
|