diff options
Diffstat (limited to 'core/vm')
-rw-r--r-- | core/vm/common.go | 30 | ||||
-rw-r--r-- | core/vm/gas.go | 4 | ||||
-rw-r--r-- | core/vm/gas_table.go | 18 | ||||
-rw-r--r-- | core/vm/instructions.go | 37 | ||||
-rw-r--r-- | core/vm/interpreter.go | 51 | ||||
-rw-r--r-- | core/vm/jump_table.go | 1358 | ||||
-rw-r--r-- | core/vm/memory_table.go | 114 | ||||
-rw-r--r-- | core/vm/stack_table.go | 32 |
8 files changed, 908 insertions, 736 deletions
diff --git a/core/vm/common.go b/core/vm/common.go index 17de38dec..d592a9410 100644 --- a/core/vm/common.go +++ b/core/vm/common.go @@ -23,13 +23,31 @@ import ( "github.com/ethereum/go-ethereum/common/math" ) -// calculates the memory size required for a step -func calcMemSize(off, l *big.Int) *big.Int { - if l.Sign() == 0 { - return common.Big0 +// calcMemSize64 calculates the required memory size, and returns +// the size and whether the result overflowed uint64 +func calcMemSize64(off, l *big.Int) (uint64, bool) { + if !l.IsUint64() { + return 0, true } + return calcMemSize64WithUint(off, l.Uint64()) +} - return new(big.Int).Add(off, l) +// calcMemSize64WithUint calculates the required memory size, and returns +// the size and whether the result overflowed uint64 +// Identical to calcMemSize64, but length is a uint64 +func calcMemSize64WithUint(off *big.Int, length64 uint64) (uint64, bool) { + // if length is zero, memsize is always zero, regardless of offset + if length64 == 0 { + return 0, false + } + // Check that offset doesn't overflow + if !off.IsUint64() { + return 0, true + } + offset64 := off.Uint64() + val := offset64 + length64 + // if value < either of it's parts, then it overflowed + return val, val < offset64 } // getData returns a slice from the data based on the start and size and pads @@ -59,7 +77,7 @@ func getDataBig(data []byte, start *big.Int, size *big.Int) []byte { // bigUint64 returns the integer casted to a uint64 and returns whether it // overflowed in the process. func bigUint64(v *big.Int) (uint64, bool) { - return v.Uint64(), v.BitLen() > 64 + return v.Uint64(), !v.IsUint64() } // toWordSize returns the ceiled word size required for memory expansion. diff --git a/core/vm/gas.go b/core/vm/gas.go index dba1b3a02..022a84f24 100644 --- a/core/vm/gas.go +++ b/core/vm/gas.go @@ -43,11 +43,11 @@ func callGas(gasTable params.GasTable, availableGas, base uint64, callCost *big. // If the bit length exceeds 64 bit we know that the newly calculated "gas" for EIP150 // is smaller than the requested amount. Therefor we return the new gas instead // of returning an error. - if callCost.BitLen() > 64 || gas < callCost.Uint64() { + if !callCost.IsUint64() || gas < callCost.Uint64() { return gas, nil } } - if callCost.BitLen() > 64 { + if !callCost.IsUint64() { return 0, errGasUintOverflow } diff --git a/core/vm/gas_table.go b/core/vm/gas_table.go index f22463c33..6400c1324 100644 --- a/core/vm/gas_table.go +++ b/core/vm/gas_table.go @@ -57,12 +57,6 @@ func memoryGasCost(mem *Memory, newMemSize uint64) (uint64, error) { return 0, nil } -func constGasFunc(gas uint64) gasFunc { - return func(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { - return gas, nil - } -} - func gasCallDataCopy(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { gas, err := memoryGasCost(mem, memorySize) if err != nil { @@ -521,15 +515,3 @@ func gasStaticCall(gt params.GasTable, evm *EVM, contract *Contract, stack *Stac } return gas, nil } - -func gasPush(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { - return GasFastestStep, nil -} - -func gasSwap(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { - return GasFastestStep, nil -} - -func gasDup(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) { - return GasFastestStep, nil -} diff --git a/core/vm/instructions.go b/core/vm/instructions.go index 5195e716b..2a062d7e7 100644 --- a/core/vm/instructions.go +++ b/core/vm/instructions.go @@ -18,7 +18,6 @@ package vm import ( "errors" - "fmt" "math/big" "github.com/ethereum/go-ethereum/common" @@ -35,6 +34,7 @@ var ( errReturnDataOutOfBounds = errors.New("evm: return data out of bounds") errExecutionReverted = errors.New("evm: execution reverted") errMaxCodeSizeExceeded = errors.New("evm: max code size exceeded") + errInvalidJump = errors.New("evm: invalid jump destination") ) func opAdd(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { @@ -405,7 +405,7 @@ func opSha3(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory } func opAddress(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { - stack.push(contract.Address().Big()) + stack.push(interpreter.intPool.get().SetBytes(contract.Address().Bytes())) return nil, nil } @@ -416,12 +416,12 @@ func opBalance(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memo } func opOrigin(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { - stack.push(interpreter.evm.Origin.Big()) + stack.push(interpreter.intPool.get().SetBytes(interpreter.evm.Origin.Bytes())) return nil, nil } func opCaller(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { - stack.push(contract.Caller().Big()) + stack.push(interpreter.intPool.get().SetBytes(contract.Caller().Bytes())) return nil, nil } @@ -467,7 +467,7 @@ func opReturnDataCopy(pc *uint64, interpreter *EVMInterpreter, contract *Contrac ) defer interpreter.intPool.put(memOffset, dataOffset, length, end) - if end.BitLen() > 64 || uint64(len(interpreter.returnData)) < end.Uint64() { + if !end.IsUint64() || uint64(len(interpreter.returnData)) < end.Uint64() { return nil, errReturnDataOutOfBounds } memory.Set(memOffset.Uint64(), length.Uint64(), interpreter.returnData[dataOffset.Uint64():end.Uint64()]) @@ -572,7 +572,7 @@ func opBlockhash(pc *uint64, interpreter *EVMInterpreter, contract *Contract, me } func opCoinbase(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { - stack.push(interpreter.evm.Coinbase.Big()) + stack.push(interpreter.intPool.get().SetBytes(interpreter.evm.Coinbase.Bytes())) return nil, nil } @@ -645,8 +645,7 @@ func opSstore(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memor func opJump(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { pos := stack.pop() if !contract.validJumpdest(pos) { - nop := contract.GetOp(pos.Uint64()) - return nil, fmt.Errorf("invalid jump destination (%v) %v", nop, pos) + return nil, errInvalidJump } *pc = pos.Uint64() @@ -658,8 +657,7 @@ func opJumpi(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory pos, cond := stack.pop(), stack.pop() if cond.Sign() != 0 { if !contract.validJumpdest(pos) { - nop := contract.GetOp(pos.Uint64()) - return nil, fmt.Errorf("invalid jump destination (%v) %v", nop, pos) + return nil, errInvalidJump } *pc = pos.Uint64() } else { @@ -711,7 +709,7 @@ func opCreate(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memor } else if suberr != nil && suberr != ErrCodeStoreOutOfGas { stack.push(interpreter.intPool.getZero()) } else { - stack.push(addr.Big()) + stack.push(interpreter.intPool.get().SetBytes(addr.Bytes())) } contract.Gas += returnGas interpreter.intPool.put(value, offset, size) @@ -739,7 +737,7 @@ func opCreate2(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memo if suberr != nil { stack.push(interpreter.intPool.getZero()) } else { - stack.push(addr.Big()) + stack.push(interpreter.intPool.get().SetBytes(addr.Bytes())) } contract.Gas += returnGas interpreter.intPool.put(endowment, offset, size, salt) @@ -912,6 +910,21 @@ func makeLog(size int) executionFunc { } } +// opPush1 is a specialized version of pushN +func opPush1(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { + var ( + codeLen = uint64(len(contract.Code)) + integer = interpreter.intPool.get() + ) + *pc += 1 + if *pc < codeLen { + stack.push(integer.SetUint64(uint64(contract.Code[*pc]))) + } else { + stack.push(integer.SetUint64(0)) + } + return nil, nil +} + // make push instruction function func makePush(size uint64, pushByteSize int) executionFunc { return func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { diff --git a/core/vm/interpreter.go b/core/vm/interpreter.go index c9dc3c00c..417665370 100644 --- a/core/vm/interpreter.go +++ b/core/vm/interpreter.go @@ -118,22 +118,6 @@ func NewEVMInterpreter(evm *EVM, cfg Config) *EVMInterpreter { } } -func (in *EVMInterpreter) enforceRestrictions(op OpCode, operation operation, stack *Stack) error { - if in.evm.chainRules.IsByzantium { - if in.readOnly { - // If the interpreter is operating in readonly mode, make sure no - // state-modifying operation is performed. The 3rd stack item - // for a call operation is the value. Transferring value from one - // account to the others means the state is modified and should also - // return with an error. - if operation.writes || (op == CALL && stack.Back(2).BitLen() > 0) { - return errWriteProtection - } - } - } - return nil -} - // Run loops and evaluates the contract's code with the given input data and returns // the return byte-slice and an error if one occurred. // @@ -217,19 +201,35 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) ( if !operation.valid { return nil, fmt.Errorf("invalid opcode 0x%x", int(op)) } - if err = operation.validateStack(stack); err != nil { - return nil, err + // Validate stack + if sLen := stack.len(); sLen < operation.minStack { + return nil, fmt.Errorf("stack underflow (%d <=> %d)", sLen, operation.minStack) + } else if sLen > operation.maxStack { + return nil, fmt.Errorf("stack limit reached %d (%d)", sLen, operation.maxStack) } // If the operation is valid, enforce and write restrictions - if err = in.enforceRestrictions(op, operation, stack); err != nil { - return nil, err + if in.readOnly && in.evm.chainRules.IsByzantium { + // If the interpreter is operating in readonly mode, make sure no + // state-modifying operation is performed. The 3rd stack item + // for a call operation is the value. Transferring value from one + // account to the others means the state is modified and should also + // return with an error. + if operation.writes || (op == CALL && stack.Back(2).Sign() != 0) { + return nil, errWriteProtection + } + } + // Static portion of gas + if !contract.UseGas(operation.constantGas) { + return nil, ErrOutOfGas } var memorySize uint64 // calculate the new memory size and expand the memory to fit // the operation + // Memory check needs to be done prior to evaluating the dynamic gas portion, + // to detect calculation overflows if operation.memorySize != nil { - memSize, overflow := bigUint64(operation.memorySize(stack)) + memSize, overflow := operation.memorySize(stack) if overflow { return nil, errGasUintOverflow } @@ -239,11 +239,14 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) ( return nil, errGasUintOverflow } } + // Dynamic portion of gas // consume the gas and return an error if not enough gas is available. // cost is explicitly set so that the capture state defer method can get the proper cost - cost, err = operation.gasCost(in.gasTable, in.evm, contract, stack, mem, memorySize) - if err != nil || !contract.UseGas(cost) { - return nil, ErrOutOfGas + if operation.dynamicGas != nil { + cost, err = operation.dynamicGas(in.gasTable, in.evm, contract, stack, mem, memorySize) + if err != nil || !contract.UseGas(cost) { + return nil, ErrOutOfGas + } } if memorySize > 0 { mem.Resize(memorySize) diff --git a/core/vm/jump_table.go b/core/vm/jump_table.go index deedf70cd..425436f9e 100644 --- a/core/vm/jump_table.go +++ b/core/vm/jump_table.go @@ -18,27 +18,30 @@ package vm import ( "errors" - "math/big" "github.com/ethereum/go-ethereum/params" ) type ( - executionFunc func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) - gasFunc func(params.GasTable, *EVM, *Contract, *Stack, *Memory, uint64) (uint64, error) // last parameter is the requested memory size as a uint64 - stackValidationFunc func(*Stack) error - memorySizeFunc func(*Stack) *big.Int + executionFunc func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) + gasFunc func(params.GasTable, *EVM, *Contract, *Stack, *Memory, uint64) (uint64, error) // last parameter is the requested memory size as a uint64 + // memorySizeFunc returns the required size, and whether the operation overflowed a uint64 + memorySizeFunc func(*Stack) (size uint64, overflow bool) ) var errGasUintOverflow = errors.New("gas uint64 overflow") type operation struct { // execute is the operation function - execute executionFunc - // gasCost is the gas function and returns the gas required for execution - gasCost gasFunc - // validateStack validates the stack (size) for the operation - validateStack stackValidationFunc + execute executionFunc + constantGas uint64 + dynamicGas gasFunc + // minStack tells how many stack items are required + minStack int + // maxStack specifies the max length the stack can have for this operation + // to not overflow the stack. + maxStack int + // memorySize returns the memory size required for the operation memorySize memorySizeFunc @@ -63,37 +66,42 @@ func newConstantinopleInstructionSet() [256]operation { // instructions that can be executed during the byzantium phase. instructionSet := newByzantiumInstructionSet() instructionSet[SHL] = operation{ - execute: opSHL, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opSHL, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, } instructionSet[SHR] = operation{ - execute: opSHR, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opSHR, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, } instructionSet[SAR] = operation{ - execute: opSAR, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opSAR, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, } instructionSet[EXTCODEHASH] = operation{ - execute: opExtCodeHash, - gasCost: gasExtCodeHash, - validateStack: makeStackFunc(1, 1), - valid: true, + execute: opExtCodeHash, + dynamicGas: gasExtCodeHash, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + valid: true, } instructionSet[CREATE2] = operation{ - execute: opCreate2, - gasCost: gasCreate2, - validateStack: makeStackFunc(4, 1), - memorySize: memoryCreate2, - valid: true, - writes: true, - returns: true, + execute: opCreate2, + dynamicGas: gasCreate2, + minStack: minStack(4, 1), + maxStack: maxStack(4, 1), + memorySize: memoryCreate2, + valid: true, + writes: true, + returns: true, } return instructionSet } @@ -104,34 +112,38 @@ func newByzantiumInstructionSet() [256]operation { // instructions that can be executed during the homestead phase. instructionSet := newHomesteadInstructionSet() instructionSet[STATICCALL] = operation{ - execute: opStaticCall, - gasCost: gasStaticCall, - validateStack: makeStackFunc(6, 1), - memorySize: memoryStaticCall, - valid: true, - returns: true, + execute: opStaticCall, + dynamicGas: gasStaticCall, + minStack: minStack(6, 1), + maxStack: maxStack(6, 1), + memorySize: memoryStaticCall, + valid: true, + returns: true, } instructionSet[RETURNDATASIZE] = operation{ - execute: opReturnDataSize, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opReturnDataSize, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, } instructionSet[RETURNDATACOPY] = operation{ - execute: opReturnDataCopy, - gasCost: gasReturnDataCopy, - validateStack: makeStackFunc(3, 0), - memorySize: memoryReturnDataCopy, - valid: true, + execute: opReturnDataCopy, + dynamicGas: gasReturnDataCopy, + minStack: minStack(3, 0), + maxStack: maxStack(3, 0), + memorySize: memoryReturnDataCopy, + valid: true, } instructionSet[REVERT] = operation{ - execute: opRevert, - gasCost: gasRevert, - validateStack: makeStackFunc(2, 0), - memorySize: memoryRevert, - valid: true, - reverts: true, - returns: true, + execute: opRevert, + dynamicGas: gasRevert, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + memorySize: memoryRevert, + valid: true, + reverts: true, + returns: true, } return instructionSet } @@ -141,12 +153,13 @@ func newByzantiumInstructionSet() [256]operation { func newHomesteadInstructionSet() [256]operation { instructionSet := newFrontierInstructionSet() instructionSet[DELEGATECALL] = operation{ - execute: opDelegateCall, - gasCost: gasDelegateCall, - validateStack: makeStackFunc(6, 1), - memorySize: memoryDelegateCall, - valid: true, - returns: true, + execute: opDelegateCall, + dynamicGas: gasDelegateCall, + minStack: minStack(6, 1), + maxStack: maxStack(6, 1), + memorySize: memoryDelegateCall, + valid: true, + returns: true, } return instructionSet } @@ -156,811 +169,940 @@ func newHomesteadInstructionSet() [256]operation { func newFrontierInstructionSet() [256]operation { return [256]operation{ STOP: { - execute: opStop, - gasCost: constGasFunc(0), - validateStack: makeStackFunc(0, 0), - halts: true, - valid: true, + execute: opStop, + constantGas: 0, + minStack: minStack(0, 0), + maxStack: maxStack(0, 0), + halts: true, + valid: true, }, ADD: { - execute: opAdd, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opAdd, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, MUL: { - execute: opMul, - gasCost: constGasFunc(GasFastStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opMul, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, SUB: { - execute: opSub, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opSub, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, DIV: { - execute: opDiv, - gasCost: constGasFunc(GasFastStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opDiv, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, SDIV: { - execute: opSdiv, - gasCost: constGasFunc(GasFastStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opSdiv, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, MOD: { - execute: opMod, - gasCost: constGasFunc(GasFastStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opMod, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, SMOD: { - execute: opSmod, - gasCost: constGasFunc(GasFastStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opSmod, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, ADDMOD: { - execute: opAddmod, - gasCost: constGasFunc(GasMidStep), - validateStack: makeStackFunc(3, 1), - valid: true, + execute: opAddmod, + constantGas: GasMidStep, + minStack: minStack(3, 1), + maxStack: maxStack(3, 1), + valid: true, }, MULMOD: { - execute: opMulmod, - gasCost: constGasFunc(GasMidStep), - validateStack: makeStackFunc(3, 1), - valid: true, + execute: opMulmod, + constantGas: GasMidStep, + minStack: minStack(3, 1), + maxStack: maxStack(3, 1), + valid: true, }, EXP: { - execute: opExp, - gasCost: gasExp, - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opExp, + dynamicGas: gasExp, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, SIGNEXTEND: { - execute: opSignExtend, - gasCost: constGasFunc(GasFastStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opSignExtend, + constantGas: GasFastStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, LT: { - execute: opLt, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opLt, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, GT: { - execute: opGt, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opGt, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, SLT: { - execute: opSlt, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opSlt, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, SGT: { - execute: opSgt, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opSgt, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, EQ: { - execute: opEq, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opEq, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, ISZERO: { - execute: opIszero, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(1, 1), - valid: true, + execute: opIszero, + constantGas: GasFastestStep, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + valid: true, }, AND: { - execute: opAnd, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opAnd, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, XOR: { - execute: opXor, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opXor, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, OR: { - execute: opOr, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opOr, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, NOT: { - execute: opNot, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(1, 1), - valid: true, + execute: opNot, + constantGas: GasFastestStep, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + valid: true, }, BYTE: { - execute: opByte, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(2, 1), - valid: true, + execute: opByte, + constantGas: GasFastestStep, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + valid: true, }, SHA3: { - execute: opSha3, - gasCost: gasSha3, - validateStack: makeStackFunc(2, 1), - memorySize: memorySha3, - valid: true, + execute: opSha3, + dynamicGas: gasSha3, + minStack: minStack(2, 1), + maxStack: maxStack(2, 1), + memorySize: memorySha3, + valid: true, }, ADDRESS: { - execute: opAddress, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opAddress, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, BALANCE: { - execute: opBalance, - gasCost: gasBalance, - validateStack: makeStackFunc(1, 1), - valid: true, + execute: opBalance, + dynamicGas: gasBalance, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + valid: true, }, ORIGIN: { - execute: opOrigin, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opOrigin, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, CALLER: { - execute: opCaller, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opCaller, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, CALLVALUE: { - execute: opCallValue, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opCallValue, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, CALLDATALOAD: { - execute: opCallDataLoad, - gasCost: constGasFunc(GasFastestStep), - validateStack: makeStackFunc(1, 1), - valid: true, + execute: opCallDataLoad, + constantGas: GasFastestStep, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + valid: true, }, CALLDATASIZE: { - execute: opCallDataSize, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opCallDataSize, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, CALLDATACOPY: { - execute: opCallDataCopy, - gasCost: gasCallDataCopy, - validateStack: makeStackFunc(3, 0), - memorySize: memoryCallDataCopy, - valid: true, + execute: opCallDataCopy, + dynamicGas: gasCallDataCopy, + minStack: minStack(3, 0), + maxStack: maxStack(3, 0), + memorySize: memoryCallDataCopy, + valid: true, }, CODESIZE: { - execute: opCodeSize, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opCodeSize, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, CODECOPY: { - execute: opCodeCopy, - gasCost: gasCodeCopy, - validateStack: makeStackFunc(3, 0), - memorySize: memoryCodeCopy, - valid: true, + execute: opCodeCopy, + dynamicGas: gasCodeCopy, + minStack: minStack(3, 0), + maxStack: maxStack(3, 0), + memorySize: memoryCodeCopy, + valid: true, }, GASPRICE: { - execute: opGasprice, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opGasprice, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, EXTCODESIZE: { - execute: opExtCodeSize, - gasCost: gasExtCodeSize, - validateStack: makeStackFunc(1, 1), - valid: true, + execute: opExtCodeSize, + dynamicGas: gasExtCodeSize, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + valid: true, }, EXTCODECOPY: { - execute: opExtCodeCopy, - gasCost: gasExtCodeCopy, - validateStack: makeStackFunc(4, 0), - memorySize: memoryExtCodeCopy, - valid: true, + execute: opExtCodeCopy, + dynamicGas: gasExtCodeCopy, + minStack: minStack(4, 0), + maxStack: maxStack(4, 0), + memorySize: memoryExtCodeCopy, + valid: true, }, BLOCKHASH: { - execute: opBlockhash, - gasCost: constGasFunc(GasExtStep), - validateStack: makeStackFunc(1, 1), - valid: true, + execute: opBlockhash, + constantGas: GasExtStep, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + valid: true, }, COINBASE: { - execute: opCoinbase, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opCoinbase, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, TIMESTAMP: { - execute: opTimestamp, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opTimestamp, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, NUMBER: { - execute: opNumber, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opNumber, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, DIFFICULTY: { - execute: opDifficulty, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opDifficulty, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, GASLIMIT: { - execute: opGasLimit, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opGasLimit, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, POP: { - execute: opPop, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(1, 0), - valid: true, + execute: opPop, + constantGas: GasQuickStep, + minStack: minStack(1, 0), + maxStack: maxStack(1, 0), + valid: true, }, MLOAD: { - execute: opMload, - gasCost: gasMLoad, - validateStack: makeStackFunc(1, 1), - memorySize: memoryMLoad, - valid: true, + execute: opMload, + dynamicGas: gasMLoad, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + memorySize: memoryMLoad, + valid: true, }, MSTORE: { - execute: opMstore, - gasCost: gasMStore, - validateStack: makeStackFunc(2, 0), - memorySize: memoryMStore, - valid: true, + execute: opMstore, + dynamicGas: gasMStore, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + memorySize: memoryMStore, + valid: true, }, MSTORE8: { - execute: opMstore8, - gasCost: gasMStore8, - memorySize: memoryMStore8, - validateStack: makeStackFunc(2, 0), + execute: opMstore8, + dynamicGas: gasMStore8, + memorySize: memoryMStore8, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), valid: true, }, SLOAD: { - execute: opSload, - gasCost: gasSLoad, - validateStack: makeStackFunc(1, 1), - valid: true, + execute: opSload, + dynamicGas: gasSLoad, + minStack: minStack(1, 1), + maxStack: maxStack(1, 1), + valid: true, }, SSTORE: { - execute: opSstore, - gasCost: gasSStore, - validateStack: makeStackFunc(2, 0), - valid: true, - writes: true, + execute: opSstore, + dynamicGas: gasSStore, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + valid: true, + writes: true, }, JUMP: { - execute: opJump, - gasCost: constGasFunc(GasMidStep), - validateStack: makeStackFunc(1, 0), - jumps: true, - valid: true, + execute: opJump, + constantGas: GasMidStep, + minStack: minStack(1, 0), + maxStack: maxStack(1, 0), + jumps: true, + valid: true, }, JUMPI: { - execute: opJumpi, - gasCost: constGasFunc(GasSlowStep), - validateStack: makeStackFunc(2, 0), - jumps: true, - valid: true, + execute: opJumpi, + constantGas: GasSlowStep, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + jumps: true, + valid: true, }, PC: { - execute: opPc, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opPc, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, MSIZE: { - execute: opMsize, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opMsize, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, GAS: { - execute: opGas, - gasCost: constGasFunc(GasQuickStep), - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opGas, + constantGas: GasQuickStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, JUMPDEST: { - execute: opJumpdest, - gasCost: constGasFunc(params.JumpdestGas), - validateStack: makeStackFunc(0, 0), - valid: true, + execute: opJumpdest, + constantGas: params.JumpdestGas, + minStack: minStack(0, 0), + maxStack: maxStack(0, 0), + valid: true, }, PUSH1: { - execute: makePush(1, 1), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: opPush1, + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH2: { - execute: makePush(2, 2), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(2, 2), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH3: { - execute: makePush(3, 3), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(3, 3), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH4: { - execute: makePush(4, 4), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(4, 4), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH5: { - execute: makePush(5, 5), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(5, 5), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH6: { - execute: makePush(6, 6), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(6, 6), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH7: { - execute: makePush(7, 7), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(7, 7), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH8: { - execute: makePush(8, 8), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(8, 8), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH9: { - execute: makePush(9, 9), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(9, 9), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH10: { - execute: makePush(10, 10), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(10, 10), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH11: { - execute: makePush(11, 11), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(11, 11), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH12: { - execute: makePush(12, 12), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(12, 12), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH13: { - execute: makePush(13, 13), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(13, 13), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH14: { - execute: makePush(14, 14), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(14, 14), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH15: { - execute: makePush(15, 15), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(15, 15), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH16: { - execute: makePush(16, 16), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(16, 16), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH17: { - execute: makePush(17, 17), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(17, 17), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH18: { - execute: makePush(18, 18), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(18, 18), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH19: { - execute: makePush(19, 19), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(19, 19), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH20: { - execute: makePush(20, 20), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(20, 20), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH21: { - execute: makePush(21, 21), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(21, 21), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH22: { - execute: makePush(22, 22), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(22, 22), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH23: { - execute: makePush(23, 23), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(23, 23), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH24: { - execute: makePush(24, 24), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(24, 24), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH25: { - execute: makePush(25, 25), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(25, 25), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH26: { - execute: makePush(26, 26), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(26, 26), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH27: { - execute: makePush(27, 27), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(27, 27), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH28: { - execute: makePush(28, 28), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(28, 28), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH29: { - execute: makePush(29, 29), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(29, 29), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH30: { - execute: makePush(30, 30), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(30, 30), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH31: { - execute: makePush(31, 31), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(31, 31), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, PUSH32: { - execute: makePush(32, 32), - gasCost: gasPush, - validateStack: makeStackFunc(0, 1), - valid: true, + execute: makePush(32, 32), + constantGas: GasFastestStep, + minStack: minStack(0, 1), + maxStack: maxStack(0, 1), + valid: true, }, DUP1: { - execute: makeDup(1), - gasCost: gasDup, - validateStack: makeDupStackFunc(1), - valid: true, + execute: makeDup(1), + constantGas: GasFastestStep, + minStack: minDupStack(1), + maxStack: maxDupStack(1), + valid: true, }, DUP2: { - execute: makeDup(2), - gasCost: gasDup, - validateStack: makeDupStackFunc(2), - valid: true, + execute: makeDup(2), + constantGas: GasFastestStep, + minStack: minDupStack(2), + maxStack: maxDupStack(2), + valid: true, }, DUP3: { - execute: makeDup(3), - gasCost: gasDup, - validateStack: makeDupStackFunc(3), - valid: true, + execute: makeDup(3), + constantGas: GasFastestStep, + minStack: minDupStack(3), + maxStack: maxDupStack(3), + valid: true, }, DUP4: { - execute: makeDup(4), - gasCost: gasDup, - validateStack: makeDupStackFunc(4), - valid: true, + execute: makeDup(4), + constantGas: GasFastestStep, + minStack: minDupStack(4), + maxStack: maxDupStack(4), + valid: true, }, DUP5: { - execute: makeDup(5), - gasCost: gasDup, - validateStack: makeDupStackFunc(5), - valid: true, + execute: makeDup(5), + constantGas: GasFastestStep, + minStack: minDupStack(5), + maxStack: maxDupStack(5), + valid: true, }, DUP6: { - execute: makeDup(6), - gasCost: gasDup, - validateStack: makeDupStackFunc(6), - valid: true, + execute: makeDup(6), + constantGas: GasFastestStep, + minStack: minDupStack(6), + maxStack: maxDupStack(6), + valid: true, }, DUP7: { - execute: makeDup(7), - gasCost: gasDup, - validateStack: makeDupStackFunc(7), - valid: true, + execute: makeDup(7), + constantGas: GasFastestStep, + minStack: minDupStack(7), + maxStack: maxDupStack(7), + valid: true, }, DUP8: { - execute: makeDup(8), - gasCost: gasDup, - validateStack: makeDupStackFunc(8), - valid: true, + execute: makeDup(8), + constantGas: GasFastestStep, + minStack: minDupStack(8), + maxStack: maxDupStack(8), + valid: true, }, DUP9: { - execute: makeDup(9), - gasCost: gasDup, - validateStack: makeDupStackFunc(9), - valid: true, + execute: makeDup(9), + constantGas: GasFastestStep, + minStack: minDupStack(9), + maxStack: maxDupStack(9), + valid: true, }, DUP10: { - execute: makeDup(10), - gasCost: gasDup, - validateStack: makeDupStackFunc(10), - valid: true, + execute: makeDup(10), + constantGas: GasFastestStep, + minStack: minDupStack(10), + maxStack: maxDupStack(10), + valid: true, }, DUP11: { - execute: makeDup(11), - gasCost: gasDup, - validateStack: makeDupStackFunc(11), - valid: true, + execute: makeDup(11), + constantGas: GasFastestStep, + minStack: minDupStack(11), + maxStack: maxDupStack(11), + valid: true, }, DUP12: { - execute: makeDup(12), - gasCost: gasDup, - validateStack: makeDupStackFunc(12), - valid: true, + execute: makeDup(12), + constantGas: GasFastestStep, + minStack: minDupStack(12), + maxStack: maxDupStack(12), + valid: true, }, DUP13: { - execute: makeDup(13), - gasCost: gasDup, - validateStack: makeDupStackFunc(13), - valid: true, + execute: makeDup(13), + constantGas: GasFastestStep, + minStack: minDupStack(13), + maxStack: maxDupStack(13), + valid: true, }, DUP14: { - execute: makeDup(14), - gasCost: gasDup, - validateStack: makeDupStackFunc(14), - valid: true, + execute: makeDup(14), + constantGas: GasFastestStep, + minStack: minDupStack(14), + maxStack: maxDupStack(14), + valid: true, }, DUP15: { - execute: makeDup(15), - gasCost: gasDup, - validateStack: makeDupStackFunc(15), - valid: true, + execute: makeDup(15), + constantGas: GasFastestStep, + minStack: minDupStack(15), + maxStack: maxDupStack(15), + valid: true, }, DUP16: { - execute: makeDup(16), - gasCost: gasDup, - validateStack: makeDupStackFunc(16), - valid: true, + execute: makeDup(16), + constantGas: GasFastestStep, + minStack: minDupStack(16), + maxStack: maxDupStack(16), + valid: true, }, SWAP1: { - execute: makeSwap(1), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(2), - valid: true, + execute: makeSwap(1), + constantGas: GasFastestStep, + minStack: minSwapStack(2), + maxStack: maxSwapStack(2), + valid: true, }, SWAP2: { - execute: makeSwap(2), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(3), - valid: true, + execute: makeSwap(2), + constantGas: GasFastestStep, + minStack: minSwapStack(3), + maxStack: maxSwapStack(3), + valid: true, }, SWAP3: { - execute: makeSwap(3), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(4), - valid: true, + execute: makeSwap(3), + constantGas: GasFastestStep, + minStack: minSwapStack(4), + maxStack: maxSwapStack(4), + valid: true, }, SWAP4: { - execute: makeSwap(4), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(5), - valid: true, + execute: makeSwap(4), + constantGas: GasFastestStep, + minStack: minSwapStack(5), + maxStack: maxSwapStack(5), + valid: true, }, SWAP5: { - execute: makeSwap(5), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(6), - valid: true, + execute: makeSwap(5), + constantGas: GasFastestStep, + minStack: minSwapStack(6), + maxStack: maxSwapStack(6), + valid: true, }, SWAP6: { - execute: makeSwap(6), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(7), - valid: true, + execute: makeSwap(6), + constantGas: GasFastestStep, + minStack: minSwapStack(7), + maxStack: maxSwapStack(7), + valid: true, }, SWAP7: { - execute: makeSwap(7), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(8), - valid: true, + execute: makeSwap(7), + constantGas: GasFastestStep, + minStack: minSwapStack(8), + maxStack: maxSwapStack(8), + valid: true, }, SWAP8: { - execute: makeSwap(8), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(9), - valid: true, + execute: makeSwap(8), + constantGas: GasFastestStep, + minStack: minSwapStack(9), + maxStack: maxSwapStack(9), + valid: true, }, SWAP9: { - execute: makeSwap(9), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(10), - valid: true, + execute: makeSwap(9), + constantGas: GasFastestStep, + minStack: minSwapStack(10), + maxStack: maxSwapStack(10), + valid: true, }, SWAP10: { - execute: makeSwap(10), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(11), - valid: true, + execute: makeSwap(10), + constantGas: GasFastestStep, + minStack: minSwapStack(11), + maxStack: maxSwapStack(11), + valid: true, }, SWAP11: { - execute: makeSwap(11), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(12), - valid: true, + execute: makeSwap(11), + constantGas: GasFastestStep, + minStack: minSwapStack(12), + maxStack: maxSwapStack(12), + valid: true, }, SWAP12: { - execute: makeSwap(12), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(13), - valid: true, + execute: makeSwap(12), + constantGas: GasFastestStep, + minStack: minSwapStack(13), + maxStack: maxSwapStack(13), + valid: true, }, SWAP13: { - execute: makeSwap(13), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(14), - valid: true, + execute: makeSwap(13), + constantGas: GasFastestStep, + minStack: minSwapStack(14), + maxStack: maxSwapStack(14), + valid: true, }, SWAP14: { - execute: makeSwap(14), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(15), - valid: true, + execute: makeSwap(14), + constantGas: GasFastestStep, + minStack: minSwapStack(15), + maxStack: maxSwapStack(15), + valid: true, }, SWAP15: { - execute: makeSwap(15), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(16), - valid: true, + execute: makeSwap(15), + constantGas: GasFastestStep, + minStack: minSwapStack(16), + maxStack: maxSwapStack(16), + valid: true, }, SWAP16: { - execute: makeSwap(16), - gasCost: gasSwap, - validateStack: makeSwapStackFunc(17), - valid: true, + execute: makeSwap(16), + constantGas: GasFastestStep, + minStack: minSwapStack(17), + maxStack: maxSwapStack(17), + valid: true, }, LOG0: { - execute: makeLog(0), - gasCost: makeGasLog(0), - validateStack: makeStackFunc(2, 0), - memorySize: memoryLog, - valid: true, - writes: true, + execute: makeLog(0), + dynamicGas: makeGasLog(0), + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + memorySize: memoryLog, + valid: true, + writes: true, }, LOG1: { - execute: makeLog(1), - gasCost: makeGasLog(1), - validateStack: makeStackFunc(3, 0), - memorySize: memoryLog, - valid: true, - writes: true, + execute: makeLog(1), + dynamicGas: makeGasLog(1), + minStack: minStack(3, 0), + maxStack: maxStack(3, 0), + memorySize: memoryLog, + valid: true, + writes: true, }, LOG2: { - execute: makeLog(2), - gasCost: makeGasLog(2), - validateStack: makeStackFunc(4, 0), - memorySize: memoryLog, - valid: true, - writes: true, + execute: makeLog(2), + dynamicGas: makeGasLog(2), + minStack: minStack(4, 0), + maxStack: maxStack(4, 0), + memorySize: memoryLog, + valid: true, + writes: true, }, LOG3: { - execute: makeLog(3), - gasCost: makeGasLog(3), - validateStack: makeStackFunc(5, 0), - memorySize: memoryLog, - valid: true, - writes: true, + execute: makeLog(3), + dynamicGas: makeGasLog(3), + minStack: minStack(5, 0), + maxStack: maxStack(5, 0), + memorySize: memoryLog, + valid: true, + writes: true, }, LOG4: { - execute: makeLog(4), - gasCost: makeGasLog(4), - validateStack: makeStackFunc(6, 0), - memorySize: memoryLog, - valid: true, - writes: true, + execute: makeLog(4), + dynamicGas: makeGasLog(4), + minStack: minStack(6, 0), + maxStack: maxStack(6, 0), + memorySize: memoryLog, + valid: true, + writes: true, }, CREATE: { - execute: opCreate, - gasCost: gasCreate, - validateStack: makeStackFunc(3, 1), - memorySize: memoryCreate, - valid: true, - writes: true, - returns: true, + execute: opCreate, + dynamicGas: gasCreate, + minStack: minStack(3, 1), + maxStack: maxStack(3, 1), + memorySize: memoryCreate, + valid: true, + writes: true, + returns: true, }, CALL: { - execute: opCall, - gasCost: gasCall, - validateStack: makeStackFunc(7, 1), - memorySize: memoryCall, - valid: true, - returns: true, + execute: opCall, + dynamicGas: gasCall, + minStack: minStack(7, 1), + maxStack: maxStack(7, 1), + memorySize: memoryCall, + valid: true, + returns: true, }, CALLCODE: { - execute: opCallCode, - gasCost: gasCallCode, - validateStack: makeStackFunc(7, 1), - memorySize: memoryCall, - valid: true, - returns: true, + execute: opCallCode, + dynamicGas: gasCallCode, + minStack: minStack(7, 1), + maxStack: maxStack(7, 1), + memorySize: memoryCall, + valid: true, + returns: true, }, RETURN: { - execute: opReturn, - gasCost: gasReturn, - validateStack: makeStackFunc(2, 0), - memorySize: memoryReturn, - halts: true, - valid: true, + execute: opReturn, + dynamicGas: gasReturn, + minStack: minStack(2, 0), + maxStack: maxStack(2, 0), + memorySize: memoryReturn, + halts: true, + valid: true, }, SELFDESTRUCT: { - execute: opSuicide, - gasCost: gasSuicide, - validateStack: makeStackFunc(1, 0), - halts: true, - valid: true, - writes: true, + execute: opSuicide, + dynamicGas: gasSuicide, + minStack: minStack(1, 0), + maxStack: maxStack(1, 0), + halts: true, + valid: true, + writes: true, }, } } diff --git a/core/vm/memory_table.go b/core/vm/memory_table.go index 8fa6c90ca..4fcb41442 100644 --- a/core/vm/memory_table.go +++ b/core/vm/memory_table.go @@ -16,82 +16,98 @@ package vm -import ( - "math/big" - - "github.com/ethereum/go-ethereum/common/math" -) - -func memorySha3(stack *Stack) *big.Int { - return calcMemSize(stack.Back(0), stack.Back(1)) +func memorySha3(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(1)) } -func memoryCallDataCopy(stack *Stack) *big.Int { - return calcMemSize(stack.Back(0), stack.Back(2)) +func memoryCallDataCopy(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(2)) } -func memoryReturnDataCopy(stack *Stack) *big.Int { - return calcMemSize(stack.Back(0), stack.Back(2)) +func memoryReturnDataCopy(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(2)) } -func memoryCodeCopy(stack *Stack) *big.Int { - return calcMemSize(stack.Back(0), stack.Back(2)) +func memoryCodeCopy(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(2)) } -func memoryExtCodeCopy(stack *Stack) *big.Int { - return calcMemSize(stack.Back(1), stack.Back(3)) +func memoryExtCodeCopy(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(1), stack.Back(3)) } -func memoryMLoad(stack *Stack) *big.Int { - return calcMemSize(stack.Back(0), big.NewInt(32)) +func memoryMLoad(stack *Stack) (uint64, bool) { + return calcMemSize64WithUint(stack.Back(0), 32) } -func memoryMStore8(stack *Stack) *big.Int { - return calcMemSize(stack.Back(0), big.NewInt(1)) +func memoryMStore8(stack *Stack) (uint64, bool) { + return calcMemSize64WithUint(stack.Back(0), 1) } -func memoryMStore(stack *Stack) *big.Int { - return calcMemSize(stack.Back(0), big.NewInt(32)) +func memoryMStore(stack *Stack) (uint64, bool) { + return calcMemSize64WithUint(stack.Back(0), 32) } -func memoryCreate(stack *Stack) *big.Int { - return calcMemSize(stack.Back(1), stack.Back(2)) +func memoryCreate(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(1), stack.Back(2)) } -func memoryCreate2(stack *Stack) *big.Int { - return calcMemSize(stack.Back(1), stack.Back(2)) +func memoryCreate2(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(1), stack.Back(2)) } -func memoryCall(stack *Stack) *big.Int { - x := calcMemSize(stack.Back(5), stack.Back(6)) - y := calcMemSize(stack.Back(3), stack.Back(4)) - - return math.BigMax(x, y) +func memoryCall(stack *Stack) (uint64, bool) { + x, overflow := calcMemSize64(stack.Back(5), stack.Back(6)) + if overflow { + return 0, true + } + y, overflow := calcMemSize64(stack.Back(3), stack.Back(4)) + if overflow { + return 0, true + } + if x > y { + return x, false + } + return y, false } - -func memoryDelegateCall(stack *Stack) *big.Int { - x := calcMemSize(stack.Back(4), stack.Back(5)) - y := calcMemSize(stack.Back(2), stack.Back(3)) - - return math.BigMax(x, y) +func memoryDelegateCall(stack *Stack) (uint64, bool) { + x, overflow := calcMemSize64(stack.Back(4), stack.Back(5)) + if overflow { + return 0, true + } + y, overflow := calcMemSize64(stack.Back(2), stack.Back(3)) + if overflow { + return 0, true + } + if x > y { + return x, false + } + return y, false } -func memoryStaticCall(stack *Stack) *big.Int { - x := calcMemSize(stack.Back(4), stack.Back(5)) - y := calcMemSize(stack.Back(2), stack.Back(3)) - - return math.BigMax(x, y) +func memoryStaticCall(stack *Stack) (uint64, bool) { + x, overflow := calcMemSize64(stack.Back(4), stack.Back(5)) + if overflow { + return 0, true + } + y, overflow := calcMemSize64(stack.Back(2), stack.Back(3)) + if overflow { + return 0, true + } + if x > y { + return x, false + } + return y, false } -func memoryReturn(stack *Stack) *big.Int { - return calcMemSize(stack.Back(0), stack.Back(1)) +func memoryReturn(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(1)) } -func memoryRevert(stack *Stack) *big.Int { - return calcMemSize(stack.Back(0), stack.Back(1)) +func memoryRevert(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(1)) } -func memoryLog(stack *Stack) *big.Int { - mSize, mStart := stack.Back(1), stack.Back(0) - return calcMemSize(mStart, mSize) +func memoryLog(stack *Stack) (uint64, bool) { + return calcMemSize64(stack.Back(0), stack.Back(1)) } diff --git a/core/vm/stack_table.go b/core/vm/stack_table.go index a4b1cfcd8..10c12901a 100644 --- a/core/vm/stack_table.go +++ b/core/vm/stack_table.go @@ -17,28 +17,26 @@ package vm import ( - "fmt" - "github.com/ethereum/go-ethereum/params" ) -func makeStackFunc(pop, push int) stackValidationFunc { - return func(stack *Stack) error { - if err := stack.require(pop); err != nil { - return err - } - - if stack.len()+push-pop > int(params.StackLimit) { - return fmt.Errorf("stack limit reached %d (%d)", stack.len(), params.StackLimit) - } - return nil - } +func minSwapStack(n int) int { + return minStack(n, n) +} +func maxSwapStack(n int) int { + return maxStack(n, n) } -func makeDupStackFunc(n int) stackValidationFunc { - return makeStackFunc(n, n+1) +func minDupStack(n int) int { + return minStack(n, n+1) +} +func maxDupStack(n int) int { + return maxStack(n, n+1) } -func makeSwapStackFunc(n int) stackValidationFunc { - return makeStackFunc(n, n) +func maxStack(pop, push int) int { + return int(params.StackLimit) + pop - push +} +func minStack(pops, push int) int { + return pops } |