Official Go implementation of the Ethereum protocol
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go-ethereum/vm/vm_debug.go

964 lines
21 KiB

package vm
import (
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/state"
)
type DebugVm struct {
env Environment
logTy byte
logStr string
err error
// Debugging
Dbg Debugger
BreakPoints []int64
Stepping bool
Fn string
Recoverable bool
depth int
}
func NewDebugVm(env Environment) *DebugVm {
lt := LogTyPretty
if ethutil.Config.Diff {
lt = LogTyDiff
}
return &DebugVm{env: env, logTy: lt, Recoverable: true}
}
func (self *DebugVm) RunClosure(closure *Closure) (ret []byte, err error) {
self.depth++
if self.Recoverable {
// Recover from any require exception
defer func() {
if r := recover(); r != nil {
self.Endl()
closure.UseGas(closure.Gas)
ret = closure.Return(nil)
err = fmt.Errorf("%v", r)
}
}()
}
var (
op OpCode
destinations = analyseJumpDests(closure.Code)
mem = NewMemory()
stack = NewStack()
pc = big.NewInt(0)
step = 0
prevStep = 0
statedb = self.env.State()
require = func(m int) {
if stack.Len() < m {
panic(fmt.Sprintf("%04v (%v) stack err size = %d, required = %d", pc, op, stack.Len(), m))
}
}
jump = func(from, to *big.Int) {
p := int(to.Int64())
self.Printf(" ~> %v", to)
// Return to start
if p == 0 {
pc = big.NewInt(0)
} else {
nop := OpCode(closure.GetOp(p))
if !(nop == JUMPDEST || destinations[from.Int64()] != nil) {
panic(fmt.Sprintf("JUMP missed JUMPDEST (%v) %v", nop, p))
} else if nop == JUMP || nop == JUMPI {
panic(fmt.Sprintf("not allowed to JUMP(I) in to JUMP"))
}
pc = to
}
self.Endl()
}
)
// Debug hook
if self.Dbg != nil {
self.Dbg.SetCode(closure.Code)
}
// Don't bother with the execution if there's no code.
if len(closure.Code) == 0 {
return closure.Return(nil), nil
}
vmlogger.Debugf("(%d) %x gas: %v (d) %x\n", self.depth, closure.Address(), closure.Gas, closure.Args)
for {
prevStep = step
// The base for all big integer arithmetic
base := new(big.Int)
step++
// Get the memory location of pc
op = closure.GetOp(int(pc.Uint64()))
// XXX Leave this Println intact. Don't change this to the log system.
// Used for creating diffs between implementations
if self.logTy == LogTyDiff {
switch op {
case STOP, RETURN, SUICIDE:
statedb.GetStateObject(closure.Address()).EachStorage(func(key string, value *ethutil.Value) {
value.Decode()
fmt.Printf("%x %x\n", new(big.Int).SetBytes([]byte(key)).Bytes(), value.Bytes())
})
}
b := pc.Bytes()
if len(b) == 0 {
b = []byte{0}
}
fmt.Printf("%x %x %x %x\n", closure.Address(), b, []byte{byte(op)}, closure.Gas.Bytes())
}
gas := new(big.Int)
addStepGasUsage := func(amount *big.Int) {
if amount.Cmp(ethutil.Big0) >= 0 {
gas.Add(gas, amount)
}
}
addStepGasUsage(GasStep)
var newMemSize *big.Int = ethutil.Big0
// Stack Check, memory resize & gas phase
switch op {
// Stack checks only
case ISZERO, CALLDATALOAD, POP, JUMP, NOT: // 1
require(1)
case ADD, SUB, DIV, SDIV, MOD, SMOD, EXP, LT, GT, SLT, SGT, EQ, AND, OR, XOR, BYTE: // 2
require(2)
case ADDMOD, MULMOD: // 3
require(3)
case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
n := int(op - SWAP1 + 2)
require(n)
case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16:
n := int(op - DUP1 + 1)
require(n)
case LOG0, LOG1, LOG2, LOG3, LOG4:
n := int(op - LOG0)
require(n + 2)
mSize, mStart := stack.Peekn()
gas.Set(GasLog)
addStepGasUsage(new(big.Int).Mul(big.NewInt(int64(n)), GasLog))
addStepGasUsage(new(big.Int).Add(mSize, mStart))
// Gas only
case STOP:
gas.Set(ethutil.Big0)
case SUICIDE:
require(1)
gas.Set(ethutil.Big0)
case SLOAD:
require(1)
gas.Set(GasSLoad)
// Memory resize & Gas
case SSTORE:
require(2)
var mult *big.Int
y, x := stack.Peekn()
val := closure.GetStorage(x)
if val.BigInt().Cmp(ethutil.Big0) == 0 && len(y.Bytes()) > 0 {
// 0 => non 0
mult = ethutil.Big3
} else if val.BigInt().Cmp(ethutil.Big0) != 0 && len(y.Bytes()) == 0 {
statedb.Refund(closure.caller.Address(), GasSStoreRefund, closure.Price)
mult = ethutil.Big0
} else {
// non 0 => non 0
mult = ethutil.Big1
}
gas.Set(new(big.Int).Mul(mult, GasSStore))
case BALANCE:
require(1)
gas.Set(GasBalance)
case MSTORE:
require(2)
newMemSize = calcMemSize(stack.Peek(), u256(32))
case MLOAD:
require(1)
newMemSize = calcMemSize(stack.Peek(), u256(32))
case MSTORE8:
require(2)
newMemSize = calcMemSize(stack.Peek(), u256(1))
case RETURN:
require(2)
newMemSize = calcMemSize(stack.Peek(), stack.data[stack.Len()-2])
case SHA3:
require(2)
gas.Set(GasSha)
newMemSize = calcMemSize(stack.Peek(), stack.data[stack.Len()-2])
case CALLDATACOPY:
require(2)
newMemSize = calcMemSize(stack.Peek(), stack.data[stack.Len()-3])
case CODECOPY:
require(3)
newMemSize = calcMemSize(stack.Peek(), stack.data[stack.Len()-3])
case EXTCODECOPY:
require(4)
newMemSize = calcMemSize(stack.data[stack.Len()-2], stack.data[stack.Len()-4])
case CALL, CALLCODE:
require(7)
gas.Set(GasCall)
addStepGasUsage(stack.data[stack.Len()-1])
x := calcMemSize(stack.data[stack.Len()-6], stack.data[stack.Len()-7])
y := calcMemSize(stack.data[stack.Len()-4], stack.data[stack.Len()-5])
newMemSize = ethutil.BigMax(x, y)
case CREATE:
require(3)
gas.Set(GasCreate)
newMemSize = calcMemSize(stack.data[stack.Len()-2], stack.data[stack.Len()-3])
}
if newMemSize.Cmp(ethutil.Big0) > 0 {
newMemSize.Add(newMemSize, u256(31))
newMemSize.Div(newMemSize, u256(32))
newMemSize.Mul(newMemSize, u256(32))
if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
memGasUsage := new(big.Int).Sub(newMemSize, u256(int64(mem.Len())))
memGasUsage.Mul(GasMemory, memGasUsage)
memGasUsage.Div(memGasUsage, u256(32))
addStepGasUsage(memGasUsage)
mem.Resize(newMemSize.Uint64())
}
}
self.Printf("(pc) %-3d -o- %-14s", pc, op.String())
self.Printf(" (m) %-4d (s) %-4d (g) %-3v (%v)", mem.Len(), stack.Len(), gas, closure.Gas)
if !closure.UseGas(gas) {
self.Endl()
tmp := new(big.Int).Set(closure.Gas)
closure.UseGas(closure.Gas)
return closure.Return(nil), OOG(gas, tmp)
}
switch op {
// 0x20 range
case ADD:
x, y := stack.Popn()
self.Printf(" %v + %v", y, x)
base.Add(y, x)
U256(base)
self.Printf(" = %v", base)
// Pop result back on the stack
stack.Push(base)
case SUB:
x, y := stack.Popn()
self.Printf(" %v - %v", y, x)
base.Sub(y, x)
U256(base)
self.Printf(" = %v", base)
// Pop result back on the stack
stack.Push(base)
case MUL:
x, y := stack.Popn()
self.Printf(" %v * %v", y, x)
base.Mul(y, x)
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(ethutil.Big0) != 0 {
base.Div(x, y)
}
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(ethutil.Big0) == 0 {
base.Set(ethutil.Big0)
} else {
n := new(big.Int)
if new(big.Int).Mul(x, y).Cmp(ethutil.Big0) < 0 {
n.SetInt64(-1)
} else {
n.SetInt64(1)
}
base.Div(x.Abs(x), y.Abs(y)).Mul(base, n)
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(ethutil.Big0) == 0 {
base.Set(ethutil.Big0)
} else {
base.Mod(x, y)
}
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(ethutil.Big0) == 0 {
base.Set(ethutil.Big0)
} else {
n := new(big.Int)
if x.Cmp(ethutil.Big0) < 0 {
n.SetInt64(-1)
} else {
n.SetInt64(1)
}
base.Mod(x.Abs(x), y.Abs(y)).Mul(base, n)
U256(base)
}
self.Printf(" = %v", base)
stack.Push(base)
case EXP:
x, y := stack.Popn()
self.Printf(" %v ** %v", y, x)
base.Exp(y, x, Pow256)
U256(base)
self.Printf(" = %v", base)
stack.Push(base)
case SIGNEXTEND:
back := stack.Pop().Uint64()
if back < 31 {
bit := uint(back*8 + 7)
num := stack.Pop()
mask := new(big.Int).Lsh(ethutil.Big1, bit)
mask.Sub(mask, ethutil.Big1)
if ethutil.BitTest(num, int(bit)) {
num.Or(num, mask.Not(mask))
} else {
num.And(num, mask)
}
num = U256(num)
self.Printf(" = %v", num)
stack.Push(num)
}
case NOT:
base.Sub(Pow256, stack.Pop()).Sub(base, ethutil.Big1)
// Not needed
//base = U256(base)
stack.Push(base)
case LT:
x, y := stack.Popn()
self.Printf(" %v < %v", y, x)
// x < y
if y.Cmp(x) < 0 {
stack.Push(ethutil.BigTrue)
} else {
stack.Push(ethutil.BigFalse)
}
case GT:
x, y := stack.Popn()
self.Printf(" %v > %v", y, x)
// x > y
if y.Cmp(x) > 0 {
stack.Push(ethutil.BigTrue)
} else {
stack.Push(ethutil.BigFalse)
}
case SLT:
y, x := S256(stack.Pop()), S256(stack.Pop())
self.Printf(" %v < %v", y, x)
// x < y
if y.Cmp(S256(x)) < 0 {
stack.Push(ethutil.BigTrue)
} else {
stack.Push(ethutil.BigFalse)
}
case SGT:
y, x := S256(stack.Pop()), S256(stack.Pop())
self.Printf(" %v > %v", y, x)
// x > y
if y.Cmp(x) > 0 {
stack.Push(ethutil.BigTrue)
} else {
stack.Push(ethutil.BigFalse)
}
case EQ:
x, y := stack.Popn()
self.Printf(" %v == %v", y, x)
// x == y
if x.Cmp(y) == 0 {
stack.Push(ethutil.BigTrue)
} else {
stack.Push(ethutil.BigFalse)
}
case ISZERO:
x := stack.Pop()
if x.Cmp(ethutil.BigFalse) > 0 {
stack.Push(ethutil.BigFalse)
} else {
stack.Push(ethutil.BigTrue)
}
// 0x10 range
case AND:
x, y := stack.Popn()
self.Printf(" %v & %v", y, x)
stack.Push(base.And(y, x))
case OR:
x, y := stack.Popn()
self.Printf(" %v | %v", y, x)
stack.Push(base.Or(y, x))
case XOR:
x, y := stack.Popn()
self.Printf(" %v ^ %v", y, x)
stack.Push(base.Xor(y, x))
case BYTE:
val, th := stack.Popn()
if th.Cmp(big.NewInt(32)) < 0 {
byt := big.NewInt(int64(ethutil.LeftPadBytes(val.Bytes(), 32)[th.Int64()]))
base.Set(byt)
} else {
base.Set(ethutil.BigFalse)
}
self.Printf(" => 0x%x", base.Bytes())
stack.Push(base)
case ADDMOD:
x := stack.Pop()
y := stack.Pop()
z := stack.Pop()
base.Add(x, y)
base.Mod(base, z)
U256(base)
self.Printf(" = %v", base)
stack.Push(base)
case MULMOD:
x := stack.Pop()
y := stack.Pop()
z := stack.Pop()
base.Mul(x, y)
base.Mod(base, z)
U256(base)
self.Printf(" = %v", base)
stack.Push(base)
// 0x20 range
case SHA3:
size, offset := stack.Popn()
data := crypto.Sha3(mem.Get(offset.Int64(), size.Int64()))
stack.Push(ethutil.BigD(data))
self.Printf(" => %x", data)
// 0x30 range
case ADDRESS:
stack.Push(ethutil.BigD(closure.Address()))
self.Printf(" => %x", closure.Address())
case BALANCE:
addr := stack.Pop().Bytes()
balance := statedb.GetBalance(addr)
stack.Push(balance)
self.Printf(" => %v (%x)", balance, addr)
case ORIGIN:
origin := self.env.Origin()
stack.Push(ethutil.BigD(origin))
self.Printf(" => %x", origin)
case CALLER:
caller := closure.caller.Address()
stack.Push(ethutil.BigD(caller))
self.Printf(" => %x", caller)
case CALLVALUE:
value := closure.exe.value
stack.Push(value)
self.Printf(" => %v", value)
case CALLDATALOAD:
var (
offset = stack.Pop()
data = make([]byte, 32)
lenData = big.NewInt(int64(len(closure.Args)))
)
if lenData.Cmp(offset) >= 0 {
length := new(big.Int).Add(offset, ethutil.Big32)
length = ethutil.BigMin(length, lenData)
copy(data, closure.Args[offset.Int64():length.Int64()])
}
self.Printf(" => 0x%x", data)
stack.Push(ethutil.BigD(data))
case CALLDATASIZE:
l := int64(len(closure.Args))
stack.Push(big.NewInt(l))
self.Printf(" => %d", l)
case CALLDATACOPY:
var (
size = int64(len(closure.Args))
mOff = stack.Pop().Int64()
cOff = stack.Pop().Int64()
l = stack.Pop().Int64()
)
if cOff > size {
cOff = 0
l = 0
} else if cOff+l > size {
l = 0
}
code := closure.Args[cOff : cOff+l]
mem.Set(mOff, l, code)
self.Printf(" => [%v, %v, %v] %x", mOff, cOff, l, code[cOff:cOff+l])
case CODESIZE, EXTCODESIZE:
var code []byte
if op == EXTCODESIZE {
addr := stack.Pop().Bytes()
code = statedb.GetCode(addr)
} else {
code = closure.Code
}
l := big.NewInt(int64(len(code)))
stack.Push(l)
self.Printf(" => %d", l)
case CODECOPY, EXTCODECOPY:
var code []byte
if op == EXTCODECOPY {
addr := stack.Pop().Bytes()
code = statedb.GetCode(addr)
} else {
code = closure.Code
}
var (
size = int64(len(code))
mOff = stack.Pop().Int64()
cOff = stack.Pop().Int64()
l = stack.Pop().Int64()
)
if cOff > size {
cOff = 0
l = 0
} else if cOff+l > size {
l = 0
}
codeCopy := code[cOff : cOff+l]
mem.Set(mOff, l, codeCopy)
self.Printf(" => [%v, %v, %v] %x", mOff, cOff, l, code[cOff:cOff+l])
case GASPRICE:
stack.Push(closure.Price)
self.Printf(" => %v", closure.Price)
// 0x40 range
case PREVHASH:
prevHash := self.env.PrevHash()
stack.Push(ethutil.BigD(prevHash))
self.Printf(" => 0x%x", prevHash)
case COINBASE:
coinbase := self.env.Coinbase()
stack.Push(ethutil.BigD(coinbase))
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(number)
self.Printf(" => 0x%x", number.Bytes())
case DIFFICULTY:
difficulty := self.env.Difficulty()
stack.Push(difficulty)
self.Printf(" => 0x%x", difficulty.Bytes())
case GASLIMIT:
stack.Push(self.env.GasLimit())
// 0x50 range
case PUSH1, PUSH2, PUSH3, PUSH4, PUSH5, PUSH6, PUSH7, PUSH8, PUSH9, PUSH10, PUSH11, PUSH12, PUSH13, PUSH14, PUSH15, PUSH16, PUSH17, PUSH18, PUSH19, PUSH20, PUSH21, PUSH22, PUSH23, PUSH24, PUSH25, PUSH26, PUSH27, PUSH28, PUSH29, PUSH30, PUSH31, PUSH32:
a := big.NewInt(int64(op) - int64(PUSH1) + 1)
pc.Add(pc, ethutil.Big1)
data := closure.Gets(pc, a)
val := ethutil.BigD(data.Bytes())
// Push value to stack
stack.Push(val)
pc.Add(pc, a.Sub(a, big.NewInt(1)))
step += int(op) - int(PUSH1) + 1
self.Printf(" => 0x%x", data.Bytes())
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)
v := stack.Dupn(n)
self.Printf(" => [%d] 0x%x", n, stack.Peek().Bytes())
if OpCode(closure.Get(new(big.Int).Add(pc, ethutil.Big1)).Uint()) == POP && OpCode(closure.Get(new(big.Int).Add(pc, big.NewInt(2))).Uint()) == POP {
fmt.Println(toValue(v))
}
case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
n := int(op - SWAP1 + 2)
x, y := stack.Swapn(n)
self.Printf(" => [%d] %x [0] %x", n, x.Bytes(), y.Bytes())
case LOG0, LOG1, LOG2, LOG3, LOG4:
n := int(op - LOG0)
topics := make([][]byte, n)
mStart, mSize := stack.Pop().Int64(), stack.Pop().Int64()
data := mem.Geti(mStart, mSize)
for i := 0; i < n; i++ {
topics[i] = stack.Pop().Bytes()
}
log := &state.Log{closure.Address(), topics, data}
self.env.AddLog(log)
self.Printf(" => %v", log)
case MLOAD:
offset := stack.Pop()
val := ethutil.BigD(mem.Get(offset.Int64(), 32))
stack.Push(val)
self.Printf(" => 0x%x", val.Bytes())
case MSTORE: // Store the value at stack top-1 in to memory at location stack top
// Pop value of the stack
val, mStart := stack.Popn()
mem.Set(mStart.Int64(), 32, ethutil.BigToBytes(val, 256))
self.Printf(" => 0x%x", val)
case MSTORE8:
off := stack.Pop()
val := stack.Pop()
mem.store[off.Int64()] = byte(val.Int64() & 0xff)
self.Printf(" => [%v] 0x%x", off, val)
case SLOAD:
loc := stack.Pop()
val := ethutil.BigD(statedb.GetState(closure.Address(), loc.Bytes()))
stack.Push(val)
self.Printf(" {0x%x : 0x%x}", loc.Bytes(), val.Bytes())
case SSTORE:
val, loc := stack.Popn()
statedb.SetState(closure.Address(), loc.Bytes(), val)
// Debug sessions are allowed to run without message
if closure.message != nil {
closure.message.AddStorageChange(loc.Bytes())
}
self.Printf(" {0x%x : 0x%x}", loc.Bytes(), val.Bytes())
case JUMP:
jump(pc, stack.Pop())
continue
case JUMPI:
cond, pos := stack.Popn()
if cond.Cmp(ethutil.BigTrue) >= 0 {
jump(pc, pos)
continue
}
case JUMPDEST:
case PC:
stack.Push(pc)
case MSIZE:
stack.Push(big.NewInt(int64(mem.Len())))
case GAS:
stack.Push(closure.Gas)
// 0x60 range
case CREATE:
var (
err error
value = stack.Pop()
size, offset = stack.Popn()
input = mem.Get(offset.Int64(), size.Int64())
gas = new(big.Int).Set(closure.Gas)
// Snapshot the current stack so we are able to
// revert back to it later.
//snapshot = self.env.State().Copy()
)
// Generate a new address
n := statedb.GetNonce(closure.Address())
addr := crypto.CreateAddress(closure.Address(), n)
statedb.SetNonce(closure.Address(), n+1)
self.Printf(" (*) %x", addr).Endl()
closure.UseGas(closure.Gas)
msg := NewExecution(self, addr, input, gas, closure.Price, value)
ret, err := msg.Create(closure)
if err != nil {
stack.Push(ethutil.BigFalse)
// Revert the state as it was before.
//self.env.State().Set(snapshot)
self.Printf("CREATE err %v", err)
} else {
msg.object.Code = ret
stack.Push(ethutil.BigD(addr))
}
self.Endl()
// Debug hook
if self.Dbg != nil {
self.Dbg.SetCode(closure.Code)
}
case CALL, CALLCODE:
self.Endl()
gas := stack.Pop()
// Pop gas and value of the stack.
value, addr := stack.Popn()
// Pop input size and offset
inSize, inOffset := stack.Popn()
// Pop return size and offset
retSize, retOffset := stack.Popn()
// Get the arguments from the memory
args := mem.Get(inOffset.Int64(), inSize.Int64())
var executeAddr []byte
if op == CALLCODE {
executeAddr = closure.Address()
} else {
executeAddr = addr.Bytes()
}
msg := NewExecution(self, executeAddr, args, gas, closure.Price, value)
ret, err := msg.Exec(addr.Bytes(), closure)
if err != nil {
stack.Push(ethutil.BigFalse)
vmlogger.Debugln(err)
} else {
stack.Push(ethutil.BigTrue)
mem.Set(retOffset.Int64(), retSize.Int64(), ret)
}
self.Printf("resume %x", closure.Address())
// Debug hook
if self.Dbg != nil {
self.Dbg.SetCode(closure.Code)
}
case RETURN:
size, offset := stack.Popn()
ret := mem.Get(offset.Int64(), size.Int64())
self.Printf(" => (%d) 0x%x", len(ret), ret).Endl()
return closure.Return(ret), nil
case SUICIDE:
receiver := statedb.GetOrNewStateObject(stack.Pop().Bytes())
receiver.AddAmount(statedb.GetBalance(closure.Address()))
statedb.Delete(closure.Address())
fallthrough
case STOP: // Stop the closure
self.Endl()
return closure.Return(nil), nil
default:
vmlogger.Debugf("(pc) %-3v Invalid opcode %x\n", pc, op)
//panic(fmt.Sprintf("Invalid opcode %x", op))
closure.ReturnGas(big.NewInt(1), nil)
return closure.Return(nil), fmt.Errorf("Invalid opcode %x", op)
}
pc.Add(pc, ethutil.Big1)
self.Endl()
if self.Dbg != nil {
for _, instrNo := range self.Dbg.BreakPoints() {
if pc.Cmp(big.NewInt(instrNo)) == 0 {
self.Stepping = true
if !self.Dbg.BreakHook(prevStep, op, mem, stack, statedb.GetStateObject(closure.Address())) {
return nil, nil
}
} else if self.Stepping {
if !self.Dbg.StepHook(prevStep, op, mem, stack, statedb.GetStateObject(closure.Address())) {
return nil, nil
}
}
}
}
}
}
func (self *DebugVm) Printf(format string, v ...interface{}) VirtualMachine {
if self.logTy == LogTyPretty {
self.logStr += fmt.Sprintf(format, v...)
}
return self
}
func (self *DebugVm) Endl() VirtualMachine {
if self.logTy == LogTyPretty {
vmlogger.Debugln(self.logStr)
self.logStr = ""
}
return self
}
func (self *DebugVm) Env() Environment {
return self.env
}
func (self *DebugVm) Depth() int {
return self.depth
}