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core, core/vm: added structure logging

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This also reduces the time required spend in the VM
release/0.9.36
obscuren 10 years ago
parent ff5b3ef087
commit 38c61f6f25
9 changed files with 104 additions and 149 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 4
      core/state_transition.go
  2. 10
      core/vm/environment.go
  3. 2
      core/vm/gas.go
  4. 26
      core/vm/stack.go
  5. 2
      core/vm/virtual_machine.go
  6. 147
      core/vm/vm.go
  7. 11
      core/vm_env.go
  8. 40
      core/vm_logger.go
  9. 11
      tests/helper/vm.go

4
core/state_transition.go
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@ -223,6 +223,10 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
return nil, nil, InvalidTxError(err)
}
if vm.Debug {
VmStdErrFormat(vmenv.StructLogs())
}
self.refundGas()
self.state.AddBalance(self.coinbase, new(big.Int).Mul(self.gasUsed(), self.gasPrice))

10
core/vm/environment.go
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@ -20,6 +20,8 @@ type Environment interface {
GasLimit() *big.Int
Transfer(from, to Account, amount *big.Int) error
AddLog(*state.Log)
AddStructLog(StructLog)
StructLogs() []StructLog
VmType() Type
@ -31,6 +33,14 @@ type Environment interface {
Create(me ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, ContextRef)
}
type StructLog struct {
Pc uint64
Op OpCode
Gas *big.Int
Memory []byte
Stack []*big.Int
}
type Account interface {
SubBalance(amount *big.Int)
AddBalance(amount *big.Int)

2
core/vm/gas.go
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@ -21,7 +21,7 @@ var (
GasContractByte = big.NewInt(200)
)
func baseCheck(op OpCode, stack *stack, gas *big.Int) error {
func baseCheck(op OpCode, stack *Stack, gas *big.Int) error {
// PUSH and DUP are a bit special. They all cost the same but we do want to have checking on stack push limit
// PUSH is also allowed to calculate the same price for all PUSHes
// DUP requirements are handled elsewhere (except for the stack limit check)

26
core/vm/stack.go
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@ -5,16 +5,20 @@ import (
"math/big"
)
func newStack() *stack {
return &stack{}
func newStack() *Stack {
return &Stack{}
}
type stack struct {
type Stack struct {
data []*big.Int
ptr int
}
func (st *stack) push(d *big.Int) {
func (st *Stack) Data() []*big.Int {
return st.data
}
func (st *Stack) push(d *big.Int) {
// NOTE push limit (1024) is checked in baseCheck
stackItem := new(big.Int).Set(d)
if len(st.data) > st.ptr {
@ -25,36 +29,36 @@ func (st *stack) push(d *big.Int) {
st.ptr++
}
func (st *stack) pop() (ret *big.Int) {
func (st *Stack) pop() (ret *big.Int) {
st.ptr--
ret = st.data[st.ptr]
return
}
func (st *stack) len() int {
func (st *Stack) len() int {
return st.ptr
}
func (st *stack) swap(n int) {
func (st *Stack) swap(n int) {
st.data[st.len()-n], st.data[st.len()-1] = st.data[st.len()-1], st.data[st.len()-n]
}
func (st *stack) dup(n int) {
func (st *Stack) dup(n int) {
st.push(st.data[st.len()-n])
}
func (st *stack) peek() *big.Int {
func (st *Stack) peek() *big.Int {
return st.data[st.len()-1]
}
func (st *stack) require(n int) error {
func (st *Stack) require(n int) error {
if st.len() < n {
return fmt.Errorf("stack underflow (%d <=> %d)", len(st.data), n)
}
return nil
}
func (st *stack) Print() {
func (st *Stack) Print() {
fmt.Println("### stack ###")
if len(st.data) > 0 {
for i, val := range st.data {

2
core/vm/virtual_machine.go
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@ -3,6 +3,4 @@ package vm
type VirtualMachine interface {
Env() Environment
Run(context *Context, data []byte) ([]byte, error)
Printf(string, ...interface{}) VirtualMachine
Endl() VirtualMachine
}

147
core/vm/vm.go
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@ -7,24 +7,12 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/params"
)
type log struct {
op OpCode
gas *big.Int
memory []byte
stack []*big.Int
}
type Vm struct {
env Environment
// structured logging
Logs []log
logStr string
err error
// For logging
debug bool
@ -40,7 +28,7 @@ type Vm struct {
}
func New(env Environment) *Vm {
return &Vm{env: env, Recoverable: true}
return &Vm{env: env, debug: Debug, Recoverable: true}
}
func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
@ -54,8 +42,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
price = context.Price
)
self.Printf("(%d) (%x) %x (code=%d) gas: %v (d) %x", self.env.Depth(), caller.Address().Bytes()[:4], context.Address(), len(code), context.Gas, callData).Endl()
// User defer pattern to check for an error and, based on the error being nil or not, use all gas and return.
defer func() {
if self.After != nil {
@ -63,7 +49,7 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
}
if err != nil {
self.Printf(" %v", err).Endl()
// In case of a VM exception (known exceptions) all gas consumed (panics NOT included).
context.UseGas(context.Gas)
@ -96,11 +82,8 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
return fmt.Errorf("invalid jump destination (%v) %v", nop, to)
}
self.Printf(" ~> %v", to)
pc = to.Uint64()
self.Endl()
return nil
}
)
@ -112,18 +95,14 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
// Get the memory location of pc
op = context.GetOp(pc)
self.Log(op, context.Gas, mem, stack)
self.log(pc, op, context.Gas, mem, stack)
self.Printf("(pc) %-3d -o- %-14s (m) %-4d (s) %-4d ", pc, op.String(), mem.Len(), stack.len())
newMemSize, gas, err := self.calculateGasAndSize(context, caller, op, statedb, mem, stack)
if err != nil {
return nil, err
}
self.Printf("(g) %-3v (%v)", gas, context.Gas)
if !context.UseGas(gas) {
self.Endl()
tmp := new(big.Int).Set(context.Gas)
@ -137,40 +116,33 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
switch op {
case ADD:
x, y := stack.pop(), stack.pop()
self.Printf(" %v + %v", y, x)
base.Add(x, y)
U256(base)
self.Printf(" = %v", base)
// pop result back on the stack
stack.push(base)
case SUB:
x, y := stack.pop(), stack.pop()
self.Printf(" %v - %v", x, y)
base.Sub(x, y)
U256(base)
self.Printf(" = %v", base)
// pop result back on the stack
stack.push(base)
case MUL:
x, y := stack.pop(), stack.pop()
self.Printf(" %v * %v", y, x)
base.Mul(x, y)
U256(base)
self.Printf(" = %v", base)
// pop result back on the stack
stack.push(base)
case DIV:
x, y := stack.pop(), stack.pop()
self.Printf(" %v / %v", x, y)
if y.Cmp(common.Big0) != 0 {
base.Div(x, y)
@ -178,14 +150,11 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
self.Printf(" = %v", base)
// pop result back on the stack
stack.push(base)
case SDIV:
x, y := S256(stack.pop()), S256(stack.pop())
self.Printf(" %v / %v", x, y)
if y.Cmp(common.Big0) == 0 {
base.Set(common.Big0)
} else {
@ -201,13 +170,10 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
}
self.Printf(" = %v", base)
stack.push(base)
case MOD:
x, y := stack.pop(), stack.pop()
self.Printf(" %v %% %v", x, y)
if y.Cmp(common.Big0) == 0 {
base.Set(common.Big0)
} else {
@ -216,13 +182,10 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
self.Printf(" = %v", base)
stack.push(base)
case SMOD:
x, y := S256(stack.pop()), S256(stack.pop())
self.Printf(" %v %% %v", x, y)
if y.Cmp(common.Big0) == 0 {
base.Set(common.Big0)
} else {
@ -238,20 +201,15 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
}
self.Printf(" = %v", base)
stack.push(base)
case EXP:
x, y := stack.pop(), stack.pop()
self.Printf(" %v ** %v", x, y)
base.Exp(x, y, Pow256)
U256(base)
self.Printf(" = %v", base)
stack.push(base)
case SIGNEXTEND:
back := stack.pop()
@ -268,15 +226,13 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
num = U256(num)
self.Printf(" = %v", num)
stack.push(num)
}
case NOT:
stack.push(U256(new(big.Int).Not(stack.pop())))
case LT:
x, y := stack.pop(), stack.pop()
self.Printf(" %v < %v", x, y)
// x < y
if x.Cmp(y) < 0 {
stack.push(common.BigTrue)
@ -285,7 +241,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
}
case GT:
x, y := stack.pop(), stack.pop()
self.Printf(" %v > %v", x, y)
// x > y
if x.Cmp(y) > 0 {
@ -296,7 +251,7 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
case SLT:
x, y := S256(stack.pop()), S256(stack.pop())
self.Printf(" %v < %v", x, y)
// x < y
if x.Cmp(S256(y)) < 0 {
stack.push(common.BigTrue)
@ -305,7 +260,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
}
case SGT:
x, y := S256(stack.pop()), S256(stack.pop())
self.Printf(" %v > %v", x, y)
// x > y
if x.Cmp(y) > 0 {
@ -316,7 +270,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
case EQ:
x, y := stack.pop(), stack.pop()
self.Printf(" %v == %v", y, x)
// x == y
if x.Cmp(y) == 0 {
@ -334,17 +287,14 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
case AND:
x, y := stack.pop(), stack.pop()
self.Printf(" %v & %v", y, x)
stack.push(base.And(x, y))
case OR:
x, y := stack.pop(), stack.pop()
self.Printf(" %v | %v", x, y)
stack.push(base.Or(x, y))
case XOR:
x, y := stack.pop(), stack.pop()
self.Printf(" %v ^ %v", x, y)
stack.push(base.Xor(x, y))
case BYTE:
@ -358,8 +308,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
base.Set(common.BigFalse)
}
self.Printf(" => 0x%x", base.Bytes())
stack.push(base)
case ADDMOD:
x := stack.pop()
@ -373,8 +321,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
base = U256(base)
}
self.Printf(" %v + %v %% %v = %v", x, y, z, base)
stack.push(base)
case MULMOD:
x := stack.pop()
@ -388,8 +334,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
U256(base)
}
self.Printf(" %v + %v %% %v = %v", x, y, z, base)
stack.push(base)
case SHA3:
@ -398,44 +342,35 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
stack.push(common.BigD(data))
self.Printf(" => (%v) %x", size, data)
case ADDRESS:
stack.push(common.Bytes2Big(context.Address().Bytes()))
self.Printf(" => %x", context.Address())
case BALANCE:
addr := common.BigToAddress(stack.pop())
balance := statedb.GetBalance(addr)
stack.push(balance)
self.Printf(" => %v (%x)", balance, addr)
case ORIGIN:
origin := self.env.Origin()
stack.push(origin.Big())
self.Printf(" => %x", origin)
case CALLER:
caller := context.caller.Address()
stack.push(common.Bytes2Big(caller.Bytes()))
self.Printf(" => %x", caller)
case CALLVALUE:
stack.push(value)
self.Printf(" => %v", value)
case CALLDATALOAD:
data := getData(callData, stack.pop(), common.Big32)
self.Printf(" => 0x%x", data)
stack.push(common.Bytes2Big(data))
case CALLDATASIZE:
l := int64(len(callData))
stack.push(big.NewInt(l))
self.Printf(" => %d", l)
case CALLDATACOPY:
var (
mOff = stack.pop()
@ -446,7 +381,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
mem.Set(mOff.Uint64(), l.Uint64(), data)
self.Printf(" => [%v, %v, %v]", mOff, cOff, l)
case CODESIZE, EXTCODESIZE:
var code []byte
if op == EXTCODESIZE {
@ -460,7 +394,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
l := big.NewInt(int64(len(code)))
stack.push(l)
self.Printf(" => %d", l)
case CODECOPY, EXTCODECOPY:
var code []byte
if op == EXTCODECOPY {
@ -480,12 +413,9 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
mem.Set(mOff.Uint64(), l.Uint64(), codeCopy)
self.Printf(" => [%v, %v, %v] %x", mOff, cOff, l, codeCopy)
case GASPRICE:
stack.push(context.Price)
self.Printf(" => %x", context.Price)
case BLOCKHASH:
num := stack.pop()
@ -496,33 +426,27 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
stack.push(common.Big0)
}
self.Printf(" => 0x%x", stack.peek().Bytes())
case COINBASE:
coinbase := self.env.Coinbase()
stack.push(coinbase.Big())
self.Printf(" => 0x%x", coinbase)
case TIMESTAMP:
time := self.env.Time()
stack.push(big.NewInt(time))
self.Printf(" => 0x%x", time)
case NUMBER:
number := self.env.BlockNumber()
stack.push(U256(number))
self.Printf(" => 0x%x", number.Bytes())
case DIFFICULTY:
difficulty := self.env.Difficulty()
stack.push(difficulty)
self.Printf(" => 0x%x", difficulty.Bytes())
case GASLIMIT:
self.Printf(" => %v", self.env.GasLimit())
stack.push(self.env.GasLimit())
@ -533,19 +457,16 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
stack.push(common.Bytes2Big(byts))
pc += size
self.Printf(" => 0x%x", byts)
case POP:
stack.pop()
case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16:
n := int(op - DUP1 + 1)
stack.dup(n)
self.Printf(" => [%d] 0x%x", n, stack.peek().Bytes())
case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
n := int(op - SWAP1 + 2)
stack.swap(n)
self.Printf(" => [%d]", n)
case LOG0, LOG1, LOG2, LOG3, LOG4:
n := int(op - LOG0)
topics := make([]common.Hash, n)
@ -558,38 +479,32 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
log := state.NewLog(context.Address(), topics, data, self.env.BlockNumber().Uint64())
self.env.AddLog(log)
self.Printf(" => %v", log)
case MLOAD:
offset := stack.pop()
val := common.BigD(mem.Get(offset.Int64(), 32))
stack.push(val)
self.Printf(" => 0x%x", val.Bytes())
case MSTORE:
// pop value of the stack
mStart, val := stack.pop(), stack.pop()
mem.Set(mStart.Uint64(), 32, common.BigToBytes(val, 256))
self.Printf(" => 0x%x", val)
case MSTORE8:
off, val := stack.pop().Int64(), stack.pop().Int64()
mem.store[off] = byte(val & 0xff)
self.Printf(" => [%v] 0x%x", off, mem.store[off])
case SLOAD:
loc := common.BigToHash(stack.pop())
val := common.Bytes2Big(statedb.GetState(context.Address(), loc))
stack.push(val)
self.Printf(" {0x%x : 0x%x}", loc, val.Bytes())
case SSTORE:
loc := common.BigToHash(stack.pop())
val := stack.pop()
statedb.SetState(context.Address(), loc, val)
self.Printf(" {0x%x : 0x%x}", loc, val.Bytes())
case JUMP:
if err := jump(pc, stack.pop()); err != nil {
return nil, err
@ -607,8 +522,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
continue
}
self.Printf(" ~> false")
case JUMPDEST:
case PC:
stack.push(new(big.Int).SetUint64(pc))
@ -617,7 +530,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
case GAS:
stack.push(context.Gas)
self.Printf(" => %x", context.Gas)
case CREATE:
var (
@ -627,14 +539,12 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
gas = new(big.Int).Set(context.Gas)
addr common.Address
)
self.Endl()
context.UseGas(context.Gas)
ret, suberr, ref := self.env.Create(context, input, gas, price, value)
if suberr != nil {
stack.push(common.BigFalse)
self.Printf(" (*) 0x0 %v", suberr)
} else {
// gas < len(ret) * CreateDataGas == NO_CODE
dataGas := big.NewInt(int64(len(ret)))
@ -659,7 +569,6 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
retOffset, retSize := stack.pop(), stack.pop()
address := common.BigToAddress(addr)
self.Printf(" => %x", address).Endl()
// Get the arguments from the memory
args := mem.Get(inOffset.Int64(), inSize.Int64())
@ -681,48 +590,40 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
if err != nil {
stack.push(common.BigFalse)
self.Printf("%v").Endl()
} else {
stack.push(common.BigTrue)
mem.Set(retOffset.Uint64(), retSize.Uint64(), ret)
}
self.Printf("resume %x (%v)", context.Address(), context.Gas)
case RETURN:
offset, size := stack.pop(), stack.pop()
ret := mem.GetPtr(offset.Int64(), size.Int64())
self.Printf(" => [%v, %v] (%d) 0x%x", offset, size, len(ret), ret).Endl()
return context.Return(ret), nil
case SUICIDE:
receiver := statedb.GetOrNewStateObject(common.BigToAddress(stack.pop()))
balance := statedb.GetBalance(context.Address())
self.Printf(" => (%x) %v", receiver.Address().Bytes()[:4], balance)
receiver.AddBalance(balance)
statedb.Delete(context.Address())
fallthrough
case STOP: // Stop the context
self.Endl()
return context.Return(nil), nil
default:
self.Printf("(pc) %-3v Invalid opcode %x\n", pc, op).Endl()
return nil, fmt.Errorf("Invalid opcode %x", op)
}
pc++
self.Endl()
}
}
func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCode, statedb *state.StateDB, mem *Memory, stack *stack) (*big.Int, *big.Int, error) {
func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCode, statedb *state.StateDB, mem *Memory, stack *Stack) (*big.Int, *big.Int, error) {
var (
gas = new(big.Int)
newMemSize *big.Int = new(big.Int)
@ -863,26 +764,13 @@ func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCo
return newMemSize, gas, nil
}
func (vm *Vm) Log(op OpCode, gas *big.Int, memory *Memory, stack *stack) {
if vm.debug {
mem := make([]byte, len(memory.store))
copy(mem, memory.store)
stck := make([]*big.Int, len(stack.data))
copy(stck, stack.data)
vm.Logs = append(vm.Logs, log{op, new(big.Int).Set(gas), mem, stck})
}
}
func (self *Vm) RunPrecompiled(p *PrecompiledAccount, callData []byte, context *Context) (ret []byte, err error) {
gas := p.Gas(len(callData))
if context.UseGas(gas) {
ret = p.Call(callData)
self.Printf("NATIVE_FUNC => %x", ret)
self.Endl()
return context.Return(ret), nil
} else {
self.Printf("NATIVE_FUNC => failed").Endl()
tmp := new(big.Int).Set(context.Gas)
@ -890,21 +778,14 @@ func (self *Vm) RunPrecompiled(p *PrecompiledAccount, callData []byte, context *
}
}
func (self *Vm) Printf(format string, v ...interface{}) VirtualMachine {
if self.debug {
self.logStr += fmt.Sprintf(format, v...)
}
return self
}
func (self *Vm) Endl() VirtualMachine {
if self.debug {
glog.V(0).Infoln(self.logStr)
self.logStr = ""
func (self *Vm) log(pc uint64, op OpCode, gas *big.Int, memory *Memory, stack *Stack) {
if Debug {
mem := make([]byte, len(memory.Data()))
copy(mem, memory.Data())
stck := make([]*big.Int, len(stack.Data()))
copy(stck, stack.Data())
self.env.AddStructLog(StructLog{pc, op, new(big.Int).Set(gas), mem, stck})
}
return self
}
func (self *Vm) Env() Environment {

11
core/vm_env.go
Unescape View File

@ -16,6 +16,8 @@ type VMEnv struct {
depth int
chain *ChainManager
typ vm.Type
// structured logging
logs []vm.StructLog
}
func NewEnv(state *state.StateDB, chain *ChainManager, msg Message, block *types.Block) *VMEnv {
@ -47,6 +49,7 @@ func (self *VMEnv) GetHash(n uint64) common.Hash {
return common.Hash{}
}
func (self *VMEnv) AddLog(log *state.Log) {
self.state.AddLog(log)
}
@ -68,3 +71,11 @@ func (self *VMEnv) Create(me vm.ContextRef, data []byte, gas, price, value *big.
exe := NewExecution(self, nil, data, gas, price, value)
return exe.Create(me)
}
func (self *VMEnv) StructLogs() []vm.StructLog {
return self.logs
}
func (self *VMEnv) AddStructLog(log vm.StructLog) {
self.logs = append(self.logs, log)
}

40
core/vm_logger.go
Unescape View File

@ -0,0 +1,40 @@
package core
import (
"fmt"
"os"
"unicode/utf8"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/vm"
)
func VmStdErrFormat(logs []vm.StructLog) {
fmt.Fprintf(os.Stderr, "VM Stats %d ops\n", len(logs))
for _, log := range logs {
fmt.Fprintf(os.Stderr, "PC %-3d - %-14s\n", log.Pc, log.Op)
fmt.Fprintln(os.Stderr, "STACK =", len(log.Stack))
for i, item := range log.Stack {
fmt.Fprintf(os.Stderr, "%04d: %x\n", i, common.LeftPadBytes(item.Bytes(), 32))
}
const maxMem = 10
addr := 0
fmt.Fprintln(os.Stderr, "MEM =", len(log.Memory))
for i := 0; i+16 <= len(log.Memory) && addr < maxMem; i += 16 {
data := log.Memory[i : i+16]
str := fmt.Sprintf("%04d: % x ", addr*16, data)
for _, r := range data {
if r == 0 {
str += "."
} else if utf8.ValidRune(rune(r)) {
str += fmt.Sprintf("%s", string(r))
} else {
str += "?"
}
}
addr++
fmt.Fprintln(os.Stderr, str)
}
}
}

11
tests/helper/vm.go
Unescape View File

@ -27,9 +27,8 @@ type Env struct {
difficulty *big.Int
gasLimit *big.Int
logs state.Logs
vmTest bool
logs []vm.StructLog
}
func NewEnv(state *state.StateDB) *Env {
@ -38,6 +37,14 @@ func NewEnv(state *state.StateDB) *Env {
}
}
func (self *Env) StructLogs() []vm.StructLog {
return self.logs
}
func (self *Env) AddStructLog(log vm.StructLog) {
self.logs = append(self.logs, log)
}
func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues map[string]string) *Env {
env := NewEnv(state)

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