mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
991 lines
21 KiB
991 lines
21 KiB
package ethvm
|
|
|
|
import (
|
|
"fmt"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/eth-go/ethcrypto"
|
|
"github.com/ethereum/eth-go/ethstate"
|
|
"github.com/ethereum/eth-go/ethutil"
|
|
)
|
|
|
|
// Shortcut :-)
|
|
var To256 = ethutil.To256
|
|
|
|
const MaxCallDepth = 1024
|
|
|
|
type Debugger interface {
|
|
BreakHook(step int, op OpCode, mem *Memory, stack *Stack, object *ethstate.StateObject) bool
|
|
StepHook(step int, op OpCode, mem *Memory, stack *Stack, object *ethstate.StateObject) bool
|
|
BreakPoints() []int64
|
|
SetCode(byteCode []byte)
|
|
}
|
|
|
|
type Vm struct {
|
|
env Environment
|
|
|
|
Verbose bool
|
|
|
|
logTy byte
|
|
logStr string
|
|
|
|
err error
|
|
|
|
// Debugging
|
|
Dbg Debugger
|
|
|
|
BreakPoints []int64
|
|
Stepping bool
|
|
Fn string
|
|
|
|
Recoverable bool
|
|
|
|
depth int
|
|
}
|
|
|
|
type Environment interface {
|
|
State() *ethstate.State
|
|
|
|
Origin() []byte
|
|
BlockNumber() *big.Int
|
|
PrevHash() []byte
|
|
Coinbase() []byte
|
|
Time() int64
|
|
Difficulty() *big.Int
|
|
Value() *big.Int
|
|
BlockHash() []byte
|
|
}
|
|
|
|
type Object interface {
|
|
GetStorage(key *big.Int) *ethutil.Value
|
|
SetStorage(key *big.Int, value *ethutil.Value)
|
|
}
|
|
|
|
func New(env Environment) *Vm {
|
|
lt := LogTyPretty
|
|
if ethutil.Config.Diff {
|
|
lt = LogTyDiff
|
|
}
|
|
|
|
return &Vm{env: env, logTy: lt, Recoverable: true}
|
|
}
|
|
|
|
func calcMemSize(off, l *big.Int) *big.Int {
|
|
if l.Cmp(ethutil.Big0) == 0 {
|
|
return ethutil.Big0
|
|
}
|
|
|
|
return new(big.Int).Add(off, l)
|
|
}
|
|
|
|
// Simple helper
|
|
func u256(n int64) *big.Int {
|
|
return big.NewInt(n)
|
|
}
|
|
|
|
func (self *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
|
|
self.depth++
|
|
|
|
if self.Recoverable {
|
|
// Recover from any require exception
|
|
defer func() {
|
|
if r := recover(); r != nil {
|
|
ret = closure.Return(nil)
|
|
err = fmt.Errorf("%v", r)
|
|
}
|
|
}()
|
|
}
|
|
|
|
// 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("(%s) %x gas: %v (d) %x\n", self.Fn, closure.Address(), closure.Gas, closure.Args)
|
|
|
|
var (
|
|
op OpCode
|
|
|
|
mem = &Memory{}
|
|
stack = NewStack()
|
|
pc = big.NewInt(0)
|
|
step = 0
|
|
prevStep = 0
|
|
require = func(m int) {
|
|
if stack.Len() < m {
|
|
panic(fmt.Sprintf("%04v (%v) stack err size = %d, required = %d", pc, op, stack.Len(), m))
|
|
}
|
|
}
|
|
)
|
|
|
|
for {
|
|
prevStep = step
|
|
// The base for all big integer arithmetic
|
|
base := new(big.Int)
|
|
|
|
step++
|
|
// Get the memory location of pc
|
|
val := closure.Get(pc)
|
|
// Get the opcode (it must be an opcode!)
|
|
op = OpCode(val.Uint())
|
|
|
|
// 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:
|
|
closure.object.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
|
|
switch op {
|
|
case STOP:
|
|
gas.Set(ethutil.Big0)
|
|
case SUICIDE:
|
|
gas.Set(ethutil.Big0)
|
|
case SLOAD:
|
|
gas.Set(GasSLoad)
|
|
case SSTORE:
|
|
var mult *big.Int
|
|
y, x := stack.Peekn()
|
|
val := closure.GetStorage(x)
|
|
if val.BigInt().Cmp(ethutil.Big0) == 0 && len(y.Bytes()) > 0 {
|
|
mult = ethutil.Big2
|
|
} else if val.BigInt().Cmp(ethutil.Big0) != 0 && len(y.Bytes()) == 0 {
|
|
mult = ethutil.Big0
|
|
} else {
|
|
mult = ethutil.Big1
|
|
}
|
|
gas = new(big.Int).Mul(mult, GasSStore)
|
|
case BALANCE:
|
|
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)
|
|
}
|
|
}
|
|
|
|
if !closure.UseGas(gas) {
|
|
err := fmt.Errorf("Insufficient gas for %v. req %v has %v", op, gas, closure.Gas)
|
|
|
|
closure.UseGas(closure.Gas)
|
|
|
|
return closure.Return(nil), err
|
|
}
|
|
|
|
self.Printf("(pc) %-3d -o- %-14s", pc, op.String())
|
|
self.Printf(" (g) %-3v (%v)", gas, closure.Gas)
|
|
|
|
mem.Resize(newMemSize.Uint64())
|
|
|
|
switch op {
|
|
case LOG:
|
|
stack.Print()
|
|
mem.Print()
|
|
// 0x20 range
|
|
case ADD:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
self.Printf(" %v + %v", y, x)
|
|
|
|
base.Add(y, x)
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
// Pop result back on the stack
|
|
stack.Push(base)
|
|
case SUB:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
self.Printf(" %v - %v", y, x)
|
|
|
|
base.Sub(y, x)
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
// Pop result back on the stack
|
|
stack.Push(base)
|
|
case MUL:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
self.Printf(" %v * %v", y, x)
|
|
|
|
base.Mul(y, x)
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
// Pop result back on the stack
|
|
stack.Push(base)
|
|
case DIV:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
self.Printf(" %v / %v", y, x)
|
|
|
|
if x.Cmp(ethutil.Big0) != 0 {
|
|
base.Div(y, x)
|
|
}
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
// Pop result back on the stack
|
|
stack.Push(base)
|
|
case SDIV:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
self.Printf(" %v / %v", y, x)
|
|
|
|
if x.Cmp(ethutil.Big0) != 0 {
|
|
base.Div(y, x)
|
|
}
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
// Pop result back on the stack
|
|
stack.Push(base)
|
|
case MOD:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
|
|
self.Printf(" %v %% %v", y, x)
|
|
|
|
base.Mod(y, x)
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
stack.Push(base)
|
|
case SMOD:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
|
|
self.Printf(" %v %% %v", y, x)
|
|
|
|
base.Mod(y, x)
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
stack.Push(base)
|
|
|
|
case EXP:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
|
|
self.Printf(" %v ** %v", y, x)
|
|
|
|
base.Exp(y, x, Pow256)
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
|
|
stack.Push(base)
|
|
case NEG:
|
|
require(1)
|
|
base.Sub(Pow256, stack.Pop())
|
|
stack.Push(base)
|
|
case LT:
|
|
require(2)
|
|
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:
|
|
require(2)
|
|
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:
|
|
require(2)
|
|
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 SGT:
|
|
require(2)
|
|
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 EQ:
|
|
require(2)
|
|
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 NOT:
|
|
require(1)
|
|
x := stack.Pop()
|
|
if x.Cmp(ethutil.BigFalse) > 0 {
|
|
stack.Push(ethutil.BigFalse)
|
|
} else {
|
|
stack.Push(ethutil.BigTrue)
|
|
}
|
|
|
|
// 0x10 range
|
|
case AND:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
self.Printf(" %v & %v", y, x)
|
|
|
|
stack.Push(base.And(y, x))
|
|
case OR:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
self.Printf(" %v | %v", y, x)
|
|
|
|
stack.Push(base.Or(y, x))
|
|
case XOR:
|
|
require(2)
|
|
x, y := stack.Popn()
|
|
self.Printf(" %v ^ %v", y, x)
|
|
|
|
stack.Push(base.Xor(y, x))
|
|
case BYTE:
|
|
require(2)
|
|
val, th := stack.Popn()
|
|
if th.Cmp(big.NewInt(32)) < 0 && th.Cmp(big.NewInt(int64(len(val.Bytes())))) < 0 {
|
|
byt := big.NewInt(int64(ethutil.LeftPadBytes(val.Bytes(), 32)[th.Int64()]))
|
|
stack.Push(byt)
|
|
|
|
self.Printf(" => 0x%x", byt.Bytes())
|
|
} else {
|
|
stack.Push(ethutil.BigFalse)
|
|
}
|
|
case ADDMOD:
|
|
require(3)
|
|
|
|
x := stack.Pop()
|
|
y := stack.Pop()
|
|
z := stack.Pop()
|
|
|
|
base.Add(x, y)
|
|
base.Mod(base, z)
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
|
|
stack.Push(base)
|
|
case MULMOD:
|
|
require(3)
|
|
|
|
x := stack.Pop()
|
|
y := stack.Pop()
|
|
z := stack.Pop()
|
|
|
|
base.Mul(x, y)
|
|
base.Mod(base, z)
|
|
|
|
To256(base)
|
|
|
|
self.Printf(" = %v", base)
|
|
|
|
stack.Push(base)
|
|
|
|
// 0x20 range
|
|
case SHA3:
|
|
require(2)
|
|
size, offset := stack.Popn()
|
|
data := ethcrypto.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:
|
|
require(1)
|
|
|
|
addr := stack.Pop().Bytes()
|
|
balance := self.env.State().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 := self.env.Value()
|
|
|
|
stack.Push(value)
|
|
|
|
self.Printf(" => %v", value)
|
|
case CALLDATALOAD:
|
|
require(1)
|
|
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)
|
|
case CODESIZE, EXTCODESIZE:
|
|
var code []byte
|
|
if op == EXTCODECOPY {
|
|
addr := stack.Pop().Bytes()
|
|
|
|
code = self.env.State().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 = self.env.State().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)
|
|
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:
|
|
// TODO
|
|
stack.Push(big.NewInt(0))
|
|
|
|
// 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:
|
|
require(1)
|
|
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 MLOAD:
|
|
require(1)
|
|
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
|
|
require(2)
|
|
// 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:
|
|
require(2)
|
|
off := stack.Pop()
|
|
val := stack.Pop()
|
|
|
|
mem.store[off.Int64()] = byte(val.Int64() & 0xff)
|
|
|
|
self.Printf(" => [%v] 0x%x", off, val)
|
|
case SLOAD:
|
|
require(1)
|
|
loc := stack.Pop()
|
|
val := closure.GetStorage(loc)
|
|
|
|
stack.Push(val.BigInt())
|
|
|
|
self.Printf(" {0x%x : 0x%x}", loc.Bytes(), val.Bytes())
|
|
case SSTORE:
|
|
require(2)
|
|
val, loc := stack.Popn()
|
|
closure.SetStorage(loc, ethutil.NewValue(val))
|
|
|
|
closure.message.AddStorageChange(loc.Bytes())
|
|
|
|
self.Printf(" {0x%x : 0x%x}", loc.Bytes(), val.Bytes())
|
|
case JUMP:
|
|
require(1)
|
|
pc = stack.Pop()
|
|
// Reduce pc by one because of the increment that's at the end of this for loop
|
|
self.Printf(" ~> %v", pc).Endl()
|
|
|
|
continue
|
|
case JUMPI:
|
|
require(2)
|
|
cond, pos := stack.Popn()
|
|
if cond.Cmp(ethutil.BigTrue) >= 0 {
|
|
pc = pos
|
|
|
|
if OpCode(closure.Get(pc).Uint()) != JUMPDEST {
|
|
return closure.Return(nil), fmt.Errorf("JUMP missed JUMPDEST %v", pc)
|
|
}
|
|
|
|
continue
|
|
} else {
|
|
self.Printf(" (f)")
|
|
}
|
|
case JUMPDEST:
|
|
self.Printf(" ~> %v (t)", pc).Endl()
|
|
case PC:
|
|
stack.Push(pc)
|
|
case MSIZE:
|
|
stack.Push(big.NewInt(int64(mem.Len())))
|
|
case GAS:
|
|
stack.Push(closure.Gas)
|
|
// 0x60 range
|
|
case CREATE:
|
|
require(3)
|
|
|
|
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
|
|
addr := ethcrypto.CreateAddress(closure.Address(), closure.object.Nonce)
|
|
closure.object.Nonce++
|
|
|
|
self.Printf(" (*) %x", addr).Endl()
|
|
|
|
closure.UseGas(closure.Gas)
|
|
|
|
msg := NewExecution(self, addr, input, gas, closure.Price, value)
|
|
ret, err := msg.Exec(addr, 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:
|
|
require(7)
|
|
|
|
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())
|
|
|
|
//snapshot := self.env.State().Copy()
|
|
|
|
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)
|
|
|
|
//self.env.State().Set(snapshot)
|
|
} else {
|
|
stack.Push(ethutil.BigTrue)
|
|
|
|
mem.Set(retOffset.Int64(), retSize.Int64(), ret)
|
|
}
|
|
|
|
// Debug hook
|
|
if self.Dbg != nil {
|
|
self.Dbg.SetCode(closure.Code)
|
|
}
|
|
|
|
case RETURN:
|
|
require(2)
|
|
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:
|
|
require(1)
|
|
|
|
receiver := self.env.State().GetOrNewStateObject(stack.Pop().Bytes())
|
|
|
|
receiver.AddAmount(closure.object.Balance)
|
|
|
|
closure.object.MarkForDeletion()
|
|
|
|
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))
|
|
|
|
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, closure.Object()) {
|
|
return nil, nil
|
|
}
|
|
} else if self.Stepping {
|
|
if !self.Dbg.StepHook(prevStep, op, mem, stack, closure.Object()) {
|
|
return nil, nil
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
func (self *Vm) Printf(format string, v ...interface{}) *Vm {
|
|
if self.Verbose && self.logTy == LogTyPretty {
|
|
self.logStr += fmt.Sprintf(format, v...)
|
|
}
|
|
|
|
return self
|
|
}
|
|
|
|
func (self *Vm) Endl() *Vm {
|
|
if self.Verbose && self.logTy == LogTyPretty {
|
|
vmlogger.Debugln(self.logStr)
|
|
self.logStr = ""
|
|
}
|
|
|
|
return self
|
|
}
|
|
|
|
type Execution struct {
|
|
vm *Vm
|
|
closure *Closure
|
|
address, input []byte
|
|
gas, price, value *big.Int
|
|
object *ethstate.StateObject
|
|
}
|
|
|
|
func NewExecution(vm *Vm, address, input []byte, gas, gasPrice, value *big.Int) *Execution {
|
|
return &Execution{vm: vm, address: address, input: input, gas: gas, price: gasPrice, value: value}
|
|
}
|
|
|
|
func (self *Execution) Addr() []byte {
|
|
return self.address
|
|
}
|
|
|
|
func (self *Execution) Exec(codeAddr []byte, caller ClosureRef) (ret []byte, err error) {
|
|
snapshot := self.vm.env.State().Copy()
|
|
|
|
msg := self.vm.env.State().Manifest().AddMessage(ðstate.Message{
|
|
To: self.address, From: caller.Address(),
|
|
Input: self.input,
|
|
Origin: self.vm.env.Origin(),
|
|
Block: self.vm.env.BlockHash(), Timestamp: self.vm.env.Time(), Coinbase: self.vm.env.Coinbase(), Number: self.vm.env.BlockNumber(),
|
|
Value: self.value,
|
|
})
|
|
|
|
object := caller.Object()
|
|
if object.Balance.Cmp(self.value) < 0 {
|
|
caller.ReturnGas(self.gas, self.price)
|
|
|
|
err = fmt.Errorf("Insufficient funds to transfer value. Req %v, has %v", self.value, object.Balance)
|
|
} else {
|
|
stateObject := self.vm.env.State().GetOrNewStateObject(self.address)
|
|
self.object = stateObject
|
|
|
|
caller.Object().SubAmount(self.value)
|
|
stateObject.AddAmount(self.value)
|
|
|
|
// Precompiled contracts (address.go) 1, 2 & 3.
|
|
if p := Precompiled[ethutil.BigD(codeAddr).Uint64()]; p != nil {
|
|
if self.gas.Cmp(p.Gas) >= 0 {
|
|
ret = p.Call(self.input)
|
|
}
|
|
} else {
|
|
if self.vm.depth == MaxCallDepth {
|
|
return nil, fmt.Errorf("Max call depth exceeded (%d)", MaxCallDepth)
|
|
}
|
|
|
|
// Retrieve the executing code
|
|
code := self.vm.env.State().GetCode(codeAddr)
|
|
|
|
// Create a new callable closure
|
|
c := NewClosure(msg, caller, stateObject, code, self.gas, self.price)
|
|
// Executer the closure and get the return value (if any)
|
|
ret, _, err = c.Call(self.vm, self.input)
|
|
|
|
msg.Output = ret
|
|
}
|
|
}
|
|
|
|
if err != nil {
|
|
self.vm.env.State().Set(snapshot)
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// Mainly used for print variables and passing to Print*
|
|
func toValue(val *big.Int) interface{} {
|
|
// Let's assume a string on right padded zero's
|
|
b := val.Bytes()
|
|
if b[0] != 0 && b[len(b)-1] == 0x0 && b[len(b)-2] == 0x0 {
|
|
return string(b)
|
|
}
|
|
|
|
return val
|
|
}
|
|
|