c26c8d3a44
* Add params package with exported variables generated from github.com/ethereum/common/blob/master/params.json * Use params package variables in applicable places * Add check for minimum gas limit in validation of block's gas limit * Remove common/params.json from go-ethereum to avoid outdated version of it
910 lines
21 KiB
Go
910 lines
21 KiB
Go
package vm
|
|
|
|
import (
|
|
"fmt"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/state"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
)
|
|
|
|
type Vm struct {
|
|
env Environment
|
|
|
|
logTy byte
|
|
logStr string
|
|
|
|
err error
|
|
// For logging
|
|
debug bool
|
|
|
|
BreakPoints []int64
|
|
Stepping bool
|
|
Fn string
|
|
|
|
Recoverable bool
|
|
|
|
// Will be called before the vm returns
|
|
After func(*Context, error)
|
|
}
|
|
|
|
func New(env Environment) *Vm {
|
|
lt := LogTyPretty
|
|
|
|
return &Vm{debug: Debug, env: env, logTy: lt, Recoverable: true}
|
|
}
|
|
|
|
func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
|
|
self.env.SetDepth(self.env.Depth() + 1)
|
|
defer self.env.SetDepth(self.env.Depth() - 1)
|
|
|
|
var (
|
|
caller = context.caller
|
|
code = context.Code
|
|
value = context.value
|
|
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 {
|
|
self.After(context, err)
|
|
}
|
|
|
|
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)
|
|
|
|
ret = context.Return(nil)
|
|
}
|
|
}()
|
|
|
|
if context.CodeAddr != nil {
|
|
if p := Precompiled[context.CodeAddr.Str()]; p != nil {
|
|
return self.RunPrecompiled(p, callData, context)
|
|
}
|
|
}
|
|
|
|
var (
|
|
op OpCode
|
|
|
|
destinations = analyseJumpDests(context.Code)
|
|
mem = NewMemory()
|
|
stack = newStack()
|
|
pc = new(big.Int)
|
|
statedb = self.env.State()
|
|
|
|
jump = func(from *big.Int, to *big.Int) error {
|
|
nop := context.GetOp(to)
|
|
if !destinations.Has(to) {
|
|
return fmt.Errorf("invalid jump destination (%v) %v", nop, to)
|
|
}
|
|
|
|
self.Printf(" ~> %v", to)
|
|
pc = to
|
|
|
|
self.Endl()
|
|
|
|
return nil
|
|
}
|
|
)
|
|
|
|
// Don't bother with the execution if there's no code.
|
|
if len(code) == 0 {
|
|
return context.Return(nil), nil
|
|
}
|
|
|
|
for {
|
|
// The base for all big integer arithmetic
|
|
base := new(big.Int)
|
|
|
|
// Get the memory location of pc
|
|
op = context.GetOp(pc)
|
|
|
|
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)
|
|
|
|
context.UseGas(context.Gas)
|
|
|
|
return context.Return(nil), OOG(gas, tmp)
|
|
}
|
|
|
|
mem.Resize(newMemSize.Uint64())
|
|
|
|
switch op {
|
|
// 0x20 range
|
|
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", y, x)
|
|
|
|
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)
|
|
}
|
|
|
|
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 {
|
|
n := new(big.Int)
|
|
if new(big.Int).Mul(x, y).Cmp(common.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(common.Big0) == 0 {
|
|
base.Set(common.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(common.Big0) == 0 {
|
|
base.Set(common.Big0)
|
|
} else {
|
|
n := new(big.Int)
|
|
if x.Cmp(common.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.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()
|
|
if back.Cmp(big.NewInt(31)) < 0 {
|
|
bit := uint(back.Uint64()*8 + 7)
|
|
num := stack.pop()
|
|
mask := new(big.Int).Lsh(common.Big1, bit)
|
|
mask.Sub(mask, common.Big1)
|
|
if common.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:
|
|
stack.push(U256(new(big.Int).Not(stack.pop())))
|
|
//base.Sub(Pow256, stack.pop()).Sub(base, common.Big1)
|
|
//base = U256(base)
|
|
//stack.push(base)
|
|
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)
|
|
} else {
|
|
stack.push(common.BigFalse)
|
|
}
|
|
case GT:
|
|
x, y := stack.pop(), stack.pop()
|
|
self.Printf(" %v > %v", x, y)
|
|
|
|
// x > y
|
|
if x.Cmp(y) > 0 {
|
|
stack.push(common.BigTrue)
|
|
} else {
|
|
stack.push(common.BigFalse)
|
|
}
|
|
|
|
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)
|
|
} else {
|
|
stack.push(common.BigFalse)
|
|
}
|
|
case SGT:
|
|
x, y := S256(stack.pop()), S256(stack.pop())
|
|
self.Printf(" %v > %v", x, y)
|
|
|
|
// x > y
|
|
if x.Cmp(y) > 0 {
|
|
stack.push(common.BigTrue)
|
|
} else {
|
|
stack.push(common.BigFalse)
|
|
}
|
|
|
|
case EQ:
|
|
x, y := stack.pop(), stack.pop()
|
|
self.Printf(" %v == %v", y, x)
|
|
|
|
// x == y
|
|
if x.Cmp(y) == 0 {
|
|
stack.push(common.BigTrue)
|
|
} else {
|
|
stack.push(common.BigFalse)
|
|
}
|
|
case ISZERO:
|
|
x := stack.pop()
|
|
if x.Cmp(common.BigFalse) > 0 {
|
|
stack.push(common.BigFalse)
|
|
} else {
|
|
stack.push(common.BigTrue)
|
|
}
|
|
|
|
// 0x10 range
|
|
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:
|
|
th, val := stack.pop(), stack.pop()
|
|
|
|
if th.Cmp(big.NewInt(32)) < 0 {
|
|
byt := big.NewInt(int64(common.LeftPadBytes(val.Bytes(), 32)[th.Int64()]))
|
|
|
|
base.Set(byt)
|
|
} else {
|
|
base.Set(common.BigFalse)
|
|
}
|
|
|
|
self.Printf(" => 0x%x", base.Bytes())
|
|
|
|
stack.push(base)
|
|
case ADDMOD:
|
|
x := stack.pop()
|
|
y := stack.pop()
|
|
z := stack.pop()
|
|
|
|
if z.Cmp(Zero) > 0 {
|
|
add := new(big.Int).Add(x, y)
|
|
base.Mod(add, z)
|
|
|
|
base = U256(base)
|
|
}
|
|
|
|
self.Printf(" %v + %v %% %v = %v", x, y, z, base)
|
|
|
|
stack.push(base)
|
|
case MULMOD:
|
|
x := stack.pop()
|
|
y := stack.pop()
|
|
z := stack.pop()
|
|
|
|
if z.Cmp(Zero) > 0 {
|
|
mul := new(big.Int).Mul(x, y)
|
|
base.Mod(mul, z)
|
|
|
|
U256(base)
|
|
}
|
|
|
|
self.Printf(" %v + %v %% %v = %v", x, y, z, base)
|
|
|
|
stack.push(base)
|
|
|
|
// 0x20 range
|
|
case SHA3:
|
|
offset, size := stack.pop(), stack.pop()
|
|
data := crypto.Sha3(mem.Get(offset.Int64(), size.Int64()))
|
|
|
|
stack.push(common.BigD(data))
|
|
|
|
self.Printf(" => (%v) %x", size, data)
|
|
// 0x30 range
|
|
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()
|
|
cOff = stack.pop()
|
|
l = stack.pop()
|
|
)
|
|
data := getData(callData, cOff, l)
|
|
|
|
mem.Set(mOff.Uint64(), l.Uint64(), data)
|
|
|
|
self.Printf(" => [%v, %v, %v]", mOff, cOff, l)
|
|
case CODESIZE, EXTCODESIZE:
|
|
var code []byte
|
|
if op == EXTCODESIZE {
|
|
addr := common.BigToAddress(stack.pop())
|
|
|
|
code = statedb.GetCode(addr)
|
|
} else {
|
|
code = context.Code
|
|
}
|
|
|
|
l := big.NewInt(int64(len(code)))
|
|
stack.push(l)
|
|
|
|
self.Printf(" => %d", l)
|
|
case CODECOPY, EXTCODECOPY:
|
|
var code []byte
|
|
if op == EXTCODECOPY {
|
|
addr := common.BigToAddress(stack.pop())
|
|
code = statedb.GetCode(addr)
|
|
} else {
|
|
code = context.Code
|
|
}
|
|
|
|
var (
|
|
mOff = stack.pop()
|
|
cOff = stack.pop()
|
|
l = stack.pop()
|
|
)
|
|
|
|
codeCopy := getData(code, cOff, l)
|
|
|
|
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)
|
|
|
|
// 0x40 range
|
|
case BLOCKHASH:
|
|
num := stack.pop()
|
|
|
|
n := new(big.Int).Sub(self.env.BlockNumber(), common.Big257)
|
|
if num.Cmp(n) > 0 && num.Cmp(self.env.BlockNumber()) < 0 {
|
|
stack.push(self.env.GetHash(num.Uint64()).Big())
|
|
} else {
|
|
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())
|
|
|
|
// 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 - PUSH1 + 1))
|
|
byts := getData(code, new(big.Int).Add(pc, big.NewInt(1)), a)
|
|
// push value to stack
|
|
stack.push(common.Bytes2Big(byts))
|
|
pc.Add(pc, a)
|
|
|
|
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)
|
|
mStart, mSize := stack.pop(), stack.pop()
|
|
for i := 0; i < n; i++ {
|
|
topics[i] = common.BigToHash(stack.pop()) //common.LeftPadBytes(stack.pop().Bytes(), 32)
|
|
}
|
|
|
|
data := mem.Get(mStart.Int64(), mSize.Int64())
|
|
log := &Log{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: // Store the value at stack top-1 in to memory at location stack top
|
|
// 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
|
|
}
|
|
|
|
continue
|
|
case JUMPI:
|
|
pos, cond := stack.pop(), stack.pop()
|
|
|
|
if cond.Cmp(common.BigTrue) >= 0 {
|
|
if err := jump(pc, pos); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
continue
|
|
}
|
|
|
|
self.Printf(" ~> false")
|
|
|
|
case JUMPDEST:
|
|
case PC:
|
|
//stack.push(big.NewInt(int64(pc)))
|
|
stack.push(pc)
|
|
case MSIZE:
|
|
stack.push(big.NewInt(int64(mem.Len())))
|
|
case GAS:
|
|
stack.push(context.Gas)
|
|
|
|
self.Printf(" => %x", context.Gas)
|
|
// 0x60 range
|
|
case CREATE:
|
|
|
|
var (
|
|
value = stack.pop()
|
|
offset, size = stack.pop(), stack.pop()
|
|
input = mem.Get(offset.Int64(), size.Int64())
|
|
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)))
|
|
dataGas.Mul(dataGas, params.CreateDataGas)
|
|
if context.UseGas(dataGas) {
|
|
ref.SetCode(ret)
|
|
}
|
|
addr = ref.Address()
|
|
|
|
stack.push(addr.Big())
|
|
|
|
}
|
|
|
|
case CALL, CALLCODE:
|
|
gas := stack.pop()
|
|
// pop gas and value of the stack.
|
|
addr, value := stack.pop(), stack.pop()
|
|
value = U256(value)
|
|
// pop input size and offset
|
|
inOffset, inSize := stack.pop(), stack.pop()
|
|
// pop return size and offset
|
|
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())
|
|
|
|
if len(value.Bytes()) > 0 {
|
|
gas.Add(gas, params.CallStipend)
|
|
}
|
|
|
|
var (
|
|
ret []byte
|
|
err error
|
|
)
|
|
if op == CALLCODE {
|
|
ret, err = self.env.CallCode(context, address, args, gas, price, value)
|
|
} else {
|
|
ret, err = self.env.Call(context, address, args, gas, price, value)
|
|
}
|
|
|
|
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.Get(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.Add(pc, One)
|
|
|
|
self.Endl()
|
|
}
|
|
}
|
|
|
|
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)
|
|
)
|
|
err := baseCheck(op, stack, gas)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
// stack Check, memory resize & gas phase
|
|
switch op {
|
|
case SWAP1, SWAP2, SWAP3, SWAP4, SWAP5, SWAP6, SWAP7, SWAP8, SWAP9, SWAP10, SWAP11, SWAP12, SWAP13, SWAP14, SWAP15, SWAP16:
|
|
n := int(op - SWAP1 + 2)
|
|
err := stack.require(n)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
gas.Set(GasFastestStep)
|
|
case DUP1, DUP2, DUP3, DUP4, DUP5, DUP6, DUP7, DUP8, DUP9, DUP10, DUP11, DUP12, DUP13, DUP14, DUP15, DUP16:
|
|
n := int(op - DUP1 + 1)
|
|
err := stack.require(n)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
gas.Set(GasFastestStep)
|
|
case LOG0, LOG1, LOG2, LOG3, LOG4:
|
|
n := int(op - LOG0)
|
|
err := stack.require(n + 2)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
mSize, mStart := stack.data[stack.len()-2], stack.data[stack.len()-1]
|
|
|
|
gas.Add(gas, params.LogGas)
|
|
gas.Add(gas, new(big.Int).Mul(big.NewInt(int64(n)), params.LogTopicGas))
|
|
gas.Add(gas, new(big.Int).Mul(mSize, params.LogDataGas))
|
|
|
|
newMemSize = calcMemSize(mStart, mSize)
|
|
case EXP:
|
|
gas.Add(gas, new(big.Int).Mul(big.NewInt(int64(len(stack.data[stack.len()-2].Bytes()))), params.ExpByteGas))
|
|
case SSTORE:
|
|
err := stack.require(2)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
var g *big.Int
|
|
y, x := stack.data[stack.len()-2], stack.data[stack.len()-1]
|
|
val := statedb.GetState(context.Address(), common.BigToHash(x))
|
|
if len(val) == 0 && len(y.Bytes()) > 0 {
|
|
// 0 => non 0
|
|
g = params.SstoreSetGas
|
|
} else if len(val) > 0 && len(y.Bytes()) == 0 {
|
|
statedb.Refund(self.env.Origin(), params.SstoreRefundGas)
|
|
|
|
g = params.SstoreClearGas
|
|
} else {
|
|
// non 0 => non 0 (or 0 => 0)
|
|
g = params.SstoreClearGas
|
|
}
|
|
gas.Set(g)
|
|
case SUICIDE:
|
|
if !statedb.IsDeleted(context.Address()) {
|
|
statedb.Refund(self.env.Origin(), params.SuicideRefundGas)
|
|
}
|
|
case MLOAD:
|
|
newMemSize = calcMemSize(stack.peek(), u256(32))
|
|
case MSTORE8:
|
|
newMemSize = calcMemSize(stack.peek(), u256(1))
|
|
case MSTORE:
|
|
newMemSize = calcMemSize(stack.peek(), u256(32))
|
|
case RETURN:
|
|
newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-2])
|
|
case SHA3:
|
|
newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-2])
|
|
|
|
words := toWordSize(stack.data[stack.len()-2])
|
|
gas.Add(gas, words.Mul(words, params.Sha3WordGas))
|
|
case CALLDATACOPY:
|
|
newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-3])
|
|
|
|
words := toWordSize(stack.data[stack.len()-3])
|
|
gas.Add(gas, words.Mul(words, params.CopyGas))
|
|
case CODECOPY:
|
|
newMemSize = calcMemSize(stack.peek(), stack.data[stack.len()-3])
|
|
|
|
words := toWordSize(stack.data[stack.len()-3])
|
|
gas.Add(gas, words.Mul(words, params.CopyGas))
|
|
case EXTCODECOPY:
|
|
newMemSize = calcMemSize(stack.data[stack.len()-2], stack.data[stack.len()-4])
|
|
|
|
words := toWordSize(stack.data[stack.len()-4])
|
|
gas.Add(gas, words.Mul(words, params.CopyGas))
|
|
|
|
case CREATE:
|
|
newMemSize = calcMemSize(stack.data[stack.len()-2], stack.data[stack.len()-3])
|
|
case CALL, CALLCODE:
|
|
gas.Add(gas, stack.data[stack.len()-1])
|
|
|
|
if op == CALL {
|
|
if self.env.State().GetStateObject(common.BigToAddress(stack.data[stack.len()-2])) == nil {
|
|
gas.Add(gas, params.CallNewAccountGas)
|
|
}
|
|
}
|
|
|
|
if len(stack.data[stack.len()-3].Bytes()) > 0 {
|
|
gas.Add(gas, params.CallValueTransferGas)
|
|
}
|
|
|
|
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 = common.BigMax(x, y)
|
|
}
|
|
|
|
if newMemSize.Cmp(common.Big0) > 0 {
|
|
newMemSizeWords := toWordSize(newMemSize)
|
|
newMemSize.Mul(newMemSizeWords, u256(32))
|
|
|
|
if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
|
|
oldSize := toWordSize(big.NewInt(int64(mem.Len())))
|
|
pow := new(big.Int).Exp(oldSize, common.Big2, Zero)
|
|
linCoef := new(big.Int).Mul(oldSize, params.MemoryGas)
|
|
quadCoef := new(big.Int).Div(pow, params.QuadCoeffDiv)
|
|
oldTotalFee := new(big.Int).Add(linCoef, quadCoef)
|
|
|
|
pow.Exp(newMemSizeWords, common.Big2, Zero)
|
|
linCoef = new(big.Int).Mul(newMemSizeWords, params.MemoryGas)
|
|
quadCoef = new(big.Int).Div(pow, params.QuadCoeffDiv)
|
|
newTotalFee := new(big.Int).Add(linCoef, quadCoef)
|
|
|
|
fee := new(big.Int).Sub(newTotalFee, oldTotalFee)
|
|
gas.Add(gas, fee)
|
|
}
|
|
}
|
|
|
|
return newMemSize, gas, nil
|
|
}
|
|
|
|
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)
|
|
|
|
return nil, OOG(gas, tmp)
|
|
}
|
|
}
|
|
|
|
func (self *Vm) Printf(format string, v ...interface{}) VirtualMachine {
|
|
if self.debug {
|
|
if self.logTy == LogTyPretty {
|
|
self.logStr += fmt.Sprintf(format, v...)
|
|
}
|
|
}
|
|
|
|
return self
|
|
}
|
|
|
|
func (self *Vm) Endl() VirtualMachine {
|
|
if self.debug {
|
|
if self.logTy == LogTyPretty {
|
|
vmlogger.Infoln(self.logStr)
|
|
self.logStr = ""
|
|
}
|
|
}
|
|
|
|
return self
|
|
}
|
|
|
|
func (self *Vm) Env() Environment {
|
|
return self.env
|
|
}
|