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core/vm: fix some issues with metering

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This commit is contained in:
Guillaume Ballet 2018-10-09 11:05:18 +02:00
parent be16aabe6f
commit c4b48d1196
3 changed files with 13 additions and 10 deletions
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6
core/vm/ewasm.go
View file

@ -24,10 +24,8 @@ import (
"encoding/binary"
"errors"
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/params"
"github.com/go-interpreter/wagon/wasm"
@ -78,11 +76,9 @@ func NewEWASMInterpreter(evm *EVM, cfg Config) Interpreter {
var meteringContract *Contract
if metering {
meteringContractAddress := common.HexToAddress("0x000000000000000000000000000000000000000a")
meteringContract = NewContract(nil, AccountRef(meteringContractAddress), &big.Int{}, 0)
meteringCode := evm.StateDB.GetCode(meteringContractAddress)
meteringContract.SetCallCode(&meteringContractAddress, crypto.Keccak256Hash(meteringCode), meteringCode)
module, err := wasm.ReadModule(bytes.NewReader(evm.StateDB.GetCode(meteringContractAddress)), nil)
module, err := wasm.ReadModule(bytes.NewReader(meteringCode), nil)
if err != nil {
panic(fmt.Sprintf("Error loading the metering contract: %v", err))
}

5
core/vm/ewasm_eei.go
View file

@ -26,6 +26,7 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/go-interpreter/wagon/exec"
"github.com/go-interpreter/wagon/wasm"
)
@ -697,7 +698,11 @@ func sentinel(in *InterpreterEWASM, input []byte) ([]byte, error) {
in.contract = savedContract
in.vm = savedVM
}()
meteringContractAddress := common.HexToAddress("0x000000000000000000000000000000000000000a")
meteringCode := in.StateDB.GetCode(meteringContractAddress)
in.contract = NewContract(in.contract, AccountRef(meteringContractAddress), &big.Int{}, 0)
in.contract = in.meteringContract
in.contract.SetCallCode(&meteringContractAddress, crypto.Keccak256Hash(meteringCode), meteringCode)
in.vm = in.meteringVM
meteredCode, err := in.meteringVM.ExecCode(0)
return meteredCode.([]byte), err

2
eth/backend.go
View file

@ -151,6 +151,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
}
ewasmOptions := make(map[string]string)
if len(config.EWASMInterpreter) > 0 {
for _, option := range strings.Split(config.EWASMInterpreter, ",") {
opt := strings.Split(option, ":")
if len(opt) != 2 || len(opt[0]) == 0 {
@ -158,6 +159,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
}
ewasmOptions[opt[0]] = opt[1]
}
}
var (
vmConfig = vm.Config{