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core/vm, params: remove gastable, remove copypaste

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This commit is contained in:
Martin Holst Swende 2019-06-18 22:46:09 +02:00
parent be2827213a
commit 4991ef86f6
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GPG key ID: 683B438C05A5DDF0
6 changed files with 137 additions and 253 deletions
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215
core/vm/gas_table.go
View file

@ -53,13 +53,22 @@ func memoryGasCost(mem *Memory, newMemSize uint64) (uint64, error) {
return 0, nil
}
func gasCallDataCopy(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
// memoryCopierGas creates the gas functions for the following opcodes, and takes
// the stack position of the operand which determines the size of the data to copy
// as argument:
// CALLDATACOPY (stack position 2)
// CODECOPY (stack position 2)
// EXTCODECOPY (stack poition 3)
// RETURNDATACOPY (stack position 2)
func memoryCopierGas(stackpos int) gasFunc {
return func(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
// Gas for expanding the memory
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
words, overflow := bigUint64(stack.Back(2))
// And gas for copying data, charged per word at param.CopyGas
words, overflow := bigUint64(stack.Back(stackpos))
if overflow {
return 0, errGasUintOverflow
}
@ -73,29 +82,16 @@ func gasCallDataCopy(gt params.GasTable, evm *EVM, contract *Contract, stack *St
}
return gas, nil
}
func gasReturnDataCopy(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
words, overflow := bigUint64(stack.Back(2))
if overflow {
return 0, errGasUintOverflow
}
var (
gasCallDataCopy = memoryCopierGas(2)
gasCodeCopy = memoryCopierGas(2)
gasExtCodeCopy = memoryCopierGas(3)
gasReturnDataCopy = memoryCopierGas(2)
)
if words, overflow = math.SafeMul(toWordSize(words), params.CopyGas); overflow {
return 0, errGasUintOverflow
}
if gas, overflow = math.SafeAdd(gas, words); overflow {
return 0, errGasUintOverflow
}
return gas, nil
}
func gasSStore(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
func gasSStore(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
var (
y, x = stack.Back(1), stack.Back(0)
current = evm.StateDB.GetState(contract.Address(), common.BigToHash(x))
@ -165,7 +161,7 @@ func gasSStore(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, m
}
func makeGasLog(n uint64) gasFunc {
return func(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
return func(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
requestedSize, overflow := bigUint64(stack.Back(1))
if overflow {
return 0, errGasUintOverflow
@ -194,13 +190,11 @@ func makeGasLog(n uint64) gasFunc {
}
}
func gasSha3(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
var overflow bool
func gasSha3(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
wordGas, overflow := bigUint64(stack.Back(1))
if overflow {
return 0, errGasUintOverflow
@ -214,66 +208,23 @@ func gasSha3(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem
return gas, nil
}
func gasCodeCopy(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
var overflow bool
wordGas, overflow := bigUint64(stack.Back(2))
if overflow {
return 0, errGasUintOverflow
}
if wordGas, overflow = math.SafeMul(toWordSize(wordGas), params.CopyGas); overflow {
return 0, errGasUintOverflow
}
if gas, overflow = math.SafeAdd(gas, wordGas); overflow {
return 0, errGasUintOverflow
}
return gas, nil
}
func gasExtCodeCopy(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
var overflow bool
wordGas, overflow := bigUint64(stack.Back(3))
if overflow {
return 0, errGasUintOverflow
}
if wordGas, overflow = math.SafeMul(toWordSize(wordGas), params.CopyGas); overflow {
return 0, errGasUintOverflow
}
if gas, overflow = math.SafeAdd(gas, wordGas); overflow {
return 0, errGasUintOverflow
}
return gas, nil
}
func gasMLoad(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
// pureMemoryGascost is used by several operations, which aside from their
// static cost have a dynamic cost which is solely based on the memory
// expansion
func pureMemoryGascost(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
return memoryGasCost(mem, memorySize)
}
func gasMStore8(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
return memoryGasCost(mem, memorySize)
}
var (
gasReturn = pureMemoryGascost
gasRevert = pureMemoryGascost
gasMLoad = pureMemoryGascost
gasMStore8 = pureMemoryGascost
gasMStore = pureMemoryGascost
gasCreate = pureMemoryGascost
)
func gasMStore(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
return memoryGasCost(mem, memorySize)
}
func gasCreate(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
return memoryGasCost(mem, memorySize)
}
func gasCreate2(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
func gasCreate2(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
@ -288,11 +239,10 @@ func gasCreate2(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack,
if gas, overflow = math.SafeAdd(gas, wordGas); overflow {
return 0, errGasUintOverflow
}
return gas, nil
}
func gasExpFrontier(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
func gasExpFrontier(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
expByteLen := uint64((stack.data[stack.len()-2].BitLen() + 7) / 8)
var (
@ -305,7 +255,7 @@ func gasExpFrontier(gt params.GasTable, evm *EVM, contract *Contract, stack *Sta
return gas, nil
}
func gasExpEip158(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
func gasExpEip158(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
expByteLen := uint64((stack.data[stack.len()-2].BitLen() + 7) / 8)
var (
@ -318,9 +268,9 @@ func gasExpEip158(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack
return gas, nil
}
func gasCall(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
func gasCall(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
var (
gas = gt.Calls
gas uint64
transfersValue = stack.Back(2).Sign() != 0
address = common.BigToAddress(stack.Back(1))
eip158 = evm.chainRules.IsEIP158
@ -355,20 +305,21 @@ func gasCall(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem
return gas, nil
}
func gasCallCode(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas := gt.Calls
if stack.Back(2).Sign() != 0 {
gas += params.CallValueTransferGas
}
func gasCallCode(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
memoryGas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
var overflow bool
var (
gas uint64
overflow bool
)
if stack.Back(2).Sign() != 0 {
gas += params.CallValueTransferGas
}
if gas, overflow = math.SafeAdd(gas, memoryGas); overflow {
return 0, errGasUintOverflow
}
evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0))
if err != nil {
return 0, err
@ -379,15 +330,39 @@ func gasCallCode(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack,
return gas, nil
}
func gasReturn(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
return memoryGasCost(mem, memorySize)
func gasDelegateCall(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0))
if err != nil {
return 0, err
}
var overflow bool
if gas, overflow = math.SafeAdd(gas, evm.callGasTemp); overflow {
return 0, errGasUintOverflow
}
return gas, nil
}
func gasRevert(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
return memoryGasCost(mem, memorySize)
func gasStaticCall(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0))
if err != nil {
return 0, err
}
var overflow bool
if gas, overflow = math.SafeAdd(gas, evm.callGasTemp); overflow {
return 0, errGasUintOverflow
}
return gas, nil
}
func gasSuicide(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
func gasSuicide(evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
var gas uint64
// EIP150 homestead gas reprice fork:
if evm.chainRules.IsEIP150 {
@ -409,43 +384,3 @@ func gasSuicide(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack,
}
return gas, nil
}
func gasDelegateCall(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
var overflow bool
if gas, overflow = math.SafeAdd(gas, gt.Calls); overflow {
return 0, errGasUintOverflow
}
evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0))
if err != nil {
return 0, err
}
if gas, overflow = math.SafeAdd(gas, evm.callGasTemp); overflow {
return 0, errGasUintOverflow
}
return gas, nil
}
func gasStaticCall(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas, err := memoryGasCost(mem, memorySize)
if err != nil {
return 0, err
}
var overflow bool
if gas, overflow = math.SafeAdd(gas, gt.Calls); overflow {
return 0, errGasUintOverflow
}
evm.callGasTemp, err = callGas(evm.chainRules.IsEIP150, contract.Gas, gas, stack.Back(0))
if err != nil {
return 0, err
}
if gas, overflow = math.SafeAdd(gas, evm.callGasTemp); overflow {
return 0, errGasUintOverflow
}
return gas, nil
}

5
core/vm/interpreter.go
View file

@ -23,7 +23,6 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/math"
"github.com/ethereum/go-ethereum/params"
)
// Config are the configuration options for the Interpreter
@ -73,7 +72,6 @@ type keccakState interface {
type EVMInterpreter struct {
evm *EVM
cfg Config
gasTable params.GasTable
intPool *intPool
@ -109,7 +107,6 @@ func NewEVMInterpreter(evm *EVM, cfg Config) *EVMInterpreter {
return &EVMInterpreter{
evm: evm,
cfg: cfg,
gasTable: evm.ChainConfig().GasTable(evm.BlockNumber),
}
}
@ -238,7 +235,7 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
// 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
if operation.dynamicGas != nil {
cost, err = operation.dynamicGas(in.gasTable, in.evm, contract, stack, mem, memorySize)
cost, err = operation.dynamicGas(in.evm, contract, stack, mem, memorySize)
if err != nil || !contract.UseGas(cost) {
return nil, ErrOutOfGas
}

11
core/vm/jump_table.go
View file

@ -24,7 +24,7 @@ import (
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
gasFunc func(*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)
)
@ -116,6 +116,7 @@ func newByzantiumInstructionSet() [256]operation {
instructionSet := newSpuriousDragonInstructionSet()
instructionSet[STATICCALL] = operation{
execute: opStaticCall,
constantGas: params.CallGasEip150,
dynamicGas: gasStaticCall,
minStack: minStack(6, 1),
maxStack: maxStack(6, 1),
@ -152,6 +153,7 @@ func newByzantiumInstructionSet() [256]operation {
return instructionSet
}
// EIP 158 a.k.a Spurious Dragon
func newSpuriousDragonInstructionSet() [256]operation {
instructionSet := newTangerineWhistleInstructionSet()
instructionSet[EXP].dynamicGas = gasExpEip158
@ -159,12 +161,16 @@ func newSpuriousDragonInstructionSet() [256]operation {
}
// EIP 150 a.k.a Tangerine Whistle
func newTangerineWhistleInstructionSet() [256]operation {
instructionSet := newHomesteadInstructionSet()
instructionSet[BALANCE].constantGas = params.BalanceGasEip150
instructionSet[EXTCODESIZE].constantGas = params.ExtcodeSizeGasEip150
instructionSet[SLOAD].constantGas = params.SloadGasEip150
instructionSet[EXTCODECOPY].constantGas = params.ExtcodeCopyBaseEip150
instructionSet[CALL].constantGas = params.CallGasEip150
instructionSet[CALLCODE].constantGas = params.CallGasEip150
instructionSet[DELEGATECALL].constantGas = params.CallGasEip150
return instructionSet
}
@ -175,6 +181,7 @@ func newHomesteadInstructionSet() [256]operation {
instructionSet[DELEGATECALL] = operation{
execute: opDelegateCall,
dynamicGas: gasDelegateCall,
constantGas: params.CallGasFrontier,
minStack: minStack(6, 1),
maxStack: maxStack(6, 1),
memorySize: memoryDelegateCall,
@ -1098,6 +1105,7 @@ func newFrontierInstructionSet() [256]operation {
},
CALL: {
execute: opCall,
constantGas: params.CallGasFrontier,
dynamicGas: gasCall,
minStack: minStack(7, 1),
maxStack: maxStack(7, 1),
@ -1107,6 +1115,7 @@ func newFrontierInstructionSet() [256]operation {
},
CALLCODE: {
execute: opCallCode,
constantGas: params.CallGasFrontier,
dynamicGas: gasCallCode,
minStack: minStack(7, 1),
maxStack: maxStack(7, 1),

17
params/config.go
View file

@ -298,23 +298,6 @@ func (c *ChainConfig) IsEWASM(num *big.Int) bool {
return isForked(c.EWASMBlock, num)
}
// GasTable returns the gas table corresponding to the current phase (homestead or homestead reprice).
//
// The returned GasTable's fields shouldn't, under any circumstances, be changed.
func (c *ChainConfig) GasTable(num *big.Int) GasTable {
if num == nil {
return GasTableHomestead
}
switch {
case c.IsEIP158(num):
return GasTableEIP158
case c.IsEIP150(num):
return GasTableEIP150
default:
return GasTableHomestead
}
}
// CheckCompatible checks whether scheduled fork transitions have been imported
// with a mismatching chain configuration.
func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64) *ConfigCompatError {

42
params/gas_table.go
View file

@ -1,42 +0,0 @@
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package params
// GasTable organizes gas prices for different ethereum phases.
type GasTable struct {
Calls uint64
}
// Variables containing gas prices for different ethereum phases.
var (
// GasTableHomestead contain the gas prices for
// the homestead phase.
GasTableHomestead = GasTable{
Calls: 40,
}
// GasTableEIP150 contain the gas re-prices for
// the EIP150 phase (a.k.a TangerineWhistle).
GasTableEIP150 = GasTable{
Calls: 700,
}
// GasTableEIP158 contain the gas re-prices for
// the EIP155/EIP158 phase (a.k.a Spurious Dragon).
GasTableEIP158 = GasTable{
Calls: 700,
}
)

4
params/protocol_params.go
View file

@ -54,7 +54,7 @@ const (
JumpdestGas uint64 = 1 // Once per JUMPDEST operation.
EpochDuration uint64 = 30000 // Duration between proof-of-work epochs.
CallGas uint64 = 40 // Once per CALL operation & message call transaction.
CreateDataGas uint64 = 200 //
CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack.
ExpGas uint64 = 10 // Once per EXP instruction
@ -70,6 +70,8 @@ const (
TxDataNonZeroGas uint64 = 68 // Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions.
// These have been changed during the course of the chain
CallGasFrontier uint64 = 40 // Once per CALL operation & message call transaction.
CallGasEip150 uint64 = 700 // Static portion of gas for CALL-derivates after EIP 150 (T.W)
BalanceGasFrontier uint64 = 20 // The cost of a BALANCE operation
BalanceGasEip150 uint64 = 400 // The cost of a BALANCE operation after Tangerine Whistle
ExtcodeSizeGasFrontier uint64 = 20 // Cost of EXTCODESIZE before EIP 150 (T.W)