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.
93 lines
3.0 KiB
93 lines
3.0 KiB
// Copyright 2019 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 vm
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/harmony-one/harmony/internal/params"
|
|
)
|
|
|
|
// EnableEIP enables the given EIP on the config.
|
|
// This operation writes in-place, and callers need to ensure that the globally
|
|
// defined jump tables are not polluted.
|
|
func EnableEIP(eipNum int, jt *JumpTable) error {
|
|
switch eipNum {
|
|
case 2200:
|
|
enable2200(jt)
|
|
case 1884:
|
|
enable1884(jt)
|
|
case 1344:
|
|
enable1344(jt)
|
|
default:
|
|
return fmt.Errorf("undefined eip %d", eipNum)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// enable1884 applies EIP-1884 to the given jump table:
|
|
// - Increase cost of BALANCE to 700
|
|
// - Increase cost of EXTCODEHASH to 700
|
|
// - Increase cost of SLOAD to 800
|
|
// - Define SELFBALANCE, with cost GasFastStep (5)
|
|
func enable1884(jt *JumpTable) {
|
|
// Gas cost changes
|
|
jt[BALANCE].constantGas = params.BalanceGasEIP1884
|
|
jt[EXTCODEHASH].constantGas = params.ExtcodeHashGasEIP1884
|
|
jt[SLOAD].constantGas = params.SloadGasEIP1884
|
|
|
|
// New opcode
|
|
jt[SELFBALANCE] = operation{
|
|
execute: opSelfBalance,
|
|
constantGas: GasFastStep,
|
|
minStack: minStack(0, 1),
|
|
maxStack: maxStack(0, 1),
|
|
valid: true,
|
|
}
|
|
}
|
|
|
|
func opSelfBalance(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
balance := interpreter.intPool.get().Set(interpreter.evm.StateDB.GetBalance(contract.Address()))
|
|
stack.push(balance)
|
|
return nil, nil
|
|
}
|
|
|
|
// enable1344 applies EIP-1344 (ChainID Opcode)
|
|
// - Adds an opcode that returns the current chain’s EIP-155 unique identifier
|
|
func enable1344(jt *JumpTable) {
|
|
// New opcode
|
|
jt[CHAINID] = operation{
|
|
execute: opChainID,
|
|
constantGas: GasQuickStep,
|
|
minStack: minStack(0, 1),
|
|
maxStack: maxStack(0, 1),
|
|
valid: true,
|
|
}
|
|
}
|
|
|
|
// opChainID implements CHAINID opcode
|
|
func opChainID(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
// TODO: CHAINID - add fork (or a new opcode) to use ethereum compatible chainID
|
|
chainID := interpreter.intPool.get().Set(interpreter.evm.chainConfig.ChainID)
|
|
stack.push(chainID)
|
|
return nil, nil
|
|
}
|
|
|
|
// enable2200 applies EIP-2200 (Rebalance net-metered SSTORE)
|
|
func enable2200(jt *JumpTable) {
|
|
jt[SSTORE].dynamicGas = gasSStoreEIP2200
|
|
}
|
|
|