3bb9b49afb
* core/vm, params: implement EIP2200, SSTORE optimizations * core/vm, params: switch EIP2200 to Wei's version
108 lines
4.6 KiB
Go
108 lines
4.6 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package vm
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import (
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"math"
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"math/big"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/params"
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)
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func TestMemoryGasCost(t *testing.T) {
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tests := []struct {
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size uint64
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cost uint64
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overflow bool
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}{
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{0x1fffffffe0, 36028809887088637, false},
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{0x1fffffffe1, 0, true},
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}
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for i, tt := range tests {
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v, err := memoryGasCost(&Memory{}, tt.size)
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if (err == errGasUintOverflow) != tt.overflow {
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t.Errorf("test %d: overflow mismatch: have %v, want %v", i, err == errGasUintOverflow, tt.overflow)
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}
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if v != tt.cost {
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t.Errorf("test %d: gas cost mismatch: have %v, want %v", i, v, tt.cost)
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}
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}
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}
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var eip2200Tests = []struct {
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original byte
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gaspool uint64
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input string
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used uint64
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refund uint64
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failure error
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}{
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{0, math.MaxUint64, "0x60006000556000600055", 1612, 0, nil}, // 0 -> 0 -> 0
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{0, math.MaxUint64, "0x60006000556001600055", 20812, 0, nil}, // 0 -> 0 -> 1
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{0, math.MaxUint64, "0x60016000556000600055", 20812, 19200, nil}, // 0 -> 1 -> 0
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{0, math.MaxUint64, "0x60016000556002600055", 20812, 0, nil}, // 0 -> 1 -> 2
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{0, math.MaxUint64, "0x60016000556001600055", 20812, 0, nil}, // 0 -> 1 -> 1
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{1, math.MaxUint64, "0x60006000556000600055", 5812, 15000, nil}, // 1 -> 0 -> 0
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{1, math.MaxUint64, "0x60006000556001600055", 5812, 4200, nil}, // 1 -> 0 -> 1
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{1, math.MaxUint64, "0x60006000556002600055", 5812, 0, nil}, // 1 -> 0 -> 2
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{1, math.MaxUint64, "0x60026000556000600055", 5812, 15000, nil}, // 1 -> 2 -> 0
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{1, math.MaxUint64, "0x60026000556003600055", 5812, 0, nil}, // 1 -> 2 -> 3
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{1, math.MaxUint64, "0x60026000556001600055", 5812, 4200, nil}, // 1 -> 2 -> 1
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{1, math.MaxUint64, "0x60026000556002600055", 5812, 0, nil}, // 1 -> 2 -> 2
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{1, math.MaxUint64, "0x60016000556000600055", 5812, 15000, nil}, // 1 -> 1 -> 0
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{1, math.MaxUint64, "0x60016000556002600055", 5812, 0, nil}, // 1 -> 1 -> 2
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{1, math.MaxUint64, "0x60016000556001600055", 1612, 0, nil}, // 1 -> 1 -> 1
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{0, math.MaxUint64, "0x600160005560006000556001600055", 40818, 19200, nil}, // 0 -> 1 -> 0 -> 1
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{1, math.MaxUint64, "0x600060005560016000556000600055", 10818, 19200, nil}, // 1 -> 0 -> 1 -> 0
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{1, 2306, "0x6001600055", 2306, 0, ErrOutOfGas}, // 1 -> 1 (2300 sentry + 2xPUSH)
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{1, 2307, "0x6001600055", 806, 0, nil}, // 1 -> 1 (2301 sentry + 2xPUSH)
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}
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func TestEIP2200(t *testing.T) {
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for i, tt := range eip2200Tests {
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address := common.BytesToAddress([]byte("contract"))
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statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()))
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statedb.CreateAccount(address)
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statedb.SetCode(address, hexutil.MustDecode(tt.input))
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statedb.SetState(address, common.Hash{}, common.BytesToHash([]byte{tt.original}))
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statedb.Finalise(true) // Push the state into the "original" slot
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vmctx := Context{
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CanTransfer: func(StateDB, common.Address, *big.Int) bool { return true },
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Transfer: func(StateDB, common.Address, common.Address, *big.Int) {},
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}
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vmenv := NewEVM(vmctx, statedb, params.AllEthashProtocolChanges, Config{ExtraEips: []int{2200}})
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_, gas, err := vmenv.Call(AccountRef(common.Address{}), address, nil, tt.gaspool, new(big.Int))
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if err != tt.failure {
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t.Errorf("test %d: failure mismatch: have %v, want %v", i, err, tt.failure)
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}
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if used := tt.gaspool - gas; used != tt.used {
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t.Errorf("test %d: gas used mismatch: have %v, want %v", i, used, tt.used)
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}
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if refund := vmenv.StateDB.GetRefund(); refund != tt.refund {
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t.Errorf("test %d: gas refund mismatch: have %v, want %v", i, refund, tt.refund)
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}
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}
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}
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