mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-25 04:57:17 +00:00
bbc4ea4ae8
The run loop, which previously contained custom opcode executes have been removed and has been simplified to a few checks. Each operation consists of 4 elements: execution function, gas cost function, stack validation function and memory size function. The execution function implements the operation's runtime behaviour, the gas cost function implements the operation gas costs function and greatly depends on the memory and stack, the stack validation function validates the stack and makes sure that enough items can be popped off and pushed on and the memory size function calculates the memory required for the operation and returns it. This commit also allows the EVM to go unmetered. This is helpful for offline operations such as contract calls.
234 lines
5.9 KiB
Go
234 lines
5.9 KiB
Go
// Copyright 2015 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 tests
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import (
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"bytes"
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"fmt"
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"io"
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"math/big"
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"strconv"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/params"
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)
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func RunVmTestWithReader(r io.Reader, skipTests []string) error {
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tests := make(map[string]VmTest)
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err := readJson(r, &tests)
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if err != nil {
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return err
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}
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if err != nil {
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return err
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}
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if err := runVmTests(tests, skipTests); err != nil {
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return err
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}
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return nil
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}
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type bconf struct {
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name string
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precomp bool
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jit bool
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}
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func BenchVmTest(p string, conf bconf, b *testing.B) error {
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tests := make(map[string]VmTest)
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err := readJsonFile(p, &tests)
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if err != nil {
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return err
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}
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test, ok := tests[conf.name]
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if !ok {
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return fmt.Errorf("test not found: %s", conf.name)
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}
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env := make(map[string]string)
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env["currentCoinbase"] = test.Env.CurrentCoinbase
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env["currentDifficulty"] = test.Env.CurrentDifficulty
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env["currentGasLimit"] = test.Env.CurrentGasLimit
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env["currentNumber"] = test.Env.CurrentNumber
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env["previousHash"] = test.Env.PreviousHash
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if n, ok := test.Env.CurrentTimestamp.(float64); ok {
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env["currentTimestamp"] = strconv.Itoa(int(n))
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} else {
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env["currentTimestamp"] = test.Env.CurrentTimestamp.(string)
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}
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/*
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if conf.precomp {
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program := vm.NewProgram(test.code)
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err := vm.AttachProgram(program)
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if err != nil {
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return err
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}
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}
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*/
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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benchVmTest(test, env, b)
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}
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return nil
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}
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func benchVmTest(test VmTest, env map[string]string, b *testing.B) {
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b.StopTimer()
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db, _ := ethdb.NewMemDatabase()
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statedb := makePreState(db, test.Pre)
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b.StartTimer()
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RunVm(statedb, env, test.Exec)
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}
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func RunVmTest(p string, skipTests []string) error {
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tests := make(map[string]VmTest)
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err := readJsonFile(p, &tests)
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if err != nil {
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return err
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}
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if err := runVmTests(tests, skipTests); err != nil {
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return err
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}
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return nil
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}
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func runVmTests(tests map[string]VmTest, skipTests []string) error {
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skipTest := make(map[string]bool, len(skipTests))
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for _, name := range skipTests {
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skipTest[name] = true
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}
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for name, test := range tests {
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if skipTest[name] /*|| name != "loop_stacklimit_1021"*/ {
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glog.Infoln("Skipping VM test", name)
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continue
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}
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if err := runVmTest(test); err != nil {
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return fmt.Errorf("%s %s", name, err.Error())
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}
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glog.Infoln("VM test passed: ", name)
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//fmt.Println(string(statedb.Dump()))
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}
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return nil
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}
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func runVmTest(test VmTest) error {
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db, _ := ethdb.NewMemDatabase()
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statedb := makePreState(db, test.Pre)
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// XXX Yeah, yeah...
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env := make(map[string]string)
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env["currentCoinbase"] = test.Env.CurrentCoinbase
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env["currentDifficulty"] = test.Env.CurrentDifficulty
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env["currentGasLimit"] = test.Env.CurrentGasLimit
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env["currentNumber"] = test.Env.CurrentNumber
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env["previousHash"] = test.Env.PreviousHash
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if n, ok := test.Env.CurrentTimestamp.(float64); ok {
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env["currentTimestamp"] = strconv.Itoa(int(n))
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} else {
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env["currentTimestamp"] = test.Env.CurrentTimestamp.(string)
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}
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var (
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ret []byte
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gas *big.Int
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err error
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logs vm.Logs
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)
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ret, logs, gas, err = RunVm(statedb, env, test.Exec)
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// Compare expected and actual return
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rexp := common.FromHex(test.Out)
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if bytes.Compare(rexp, ret) != 0 {
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return fmt.Errorf("return failed. Expected %x, got %x\n", rexp, ret)
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}
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// Check gas usage
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if len(test.Gas) == 0 && err == nil {
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return fmt.Errorf("gas unspecified, indicating an error. VM returned (incorrectly) successfull")
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} else {
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gexp := common.Big(test.Gas)
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if gexp.Cmp(gas) != 0 {
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return fmt.Errorf("gas failed. Expected %v, got %v\n", gexp, gas)
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}
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}
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// check post state
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for addr, account := range test.Post {
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obj := statedb.GetStateObject(common.HexToAddress(addr))
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if obj == nil {
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continue
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}
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for addr, value := range account.Storage {
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v := statedb.GetState(obj.Address(), common.HexToHash(addr))
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vexp := common.HexToHash(value)
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if v != vexp {
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return fmt.Errorf("(%x: %s) storage failed. Expected %x, got %x (%v %v)\n", obj.Address().Bytes()[0:4], addr, vexp, v, vexp.Big(), v.Big())
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}
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}
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}
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// check logs
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if len(test.Logs) > 0 {
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lerr := checkLogs(test.Logs, logs)
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if lerr != nil {
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return lerr
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}
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}
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return nil
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}
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func RunVm(statedb *state.StateDB, env, exec map[string]string) ([]byte, vm.Logs, *big.Int, error) {
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chainConfig := ¶ms.ChainConfig{
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HomesteadBlock: params.MainNetHomesteadBlock,
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DAOForkBlock: params.MainNetDAOForkBlock,
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DAOForkSupport: true,
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}
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var (
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to = common.HexToAddress(exec["address"])
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from = common.HexToAddress(exec["caller"])
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data = common.FromHex(exec["data"])
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gas = common.Big(exec["gas"])
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value = common.Big(exec["value"])
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)
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caller := statedb.GetOrNewStateObject(from)
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vm.PrecompiledContracts = make(map[common.Address]vm.PrecompiledContract)
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environment, _ := NewEVMEnvironment(true, chainConfig, statedb, env, exec)
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ret, err := environment.Call(caller, to, data, gas, value)
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return ret, statedb.Logs(), gas, err
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}
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