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core/vm: support for multiple interpreters (#17093)

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- Define an Interpreter interface
- One contract can call contracts from other interpreter types.
- Pass the interpreter to the operands instead of the evm.
  This is meant to prevent type assertions in operands.
This commit is contained in:
Guillaume Ballet 2018-07-25 08:56:39 -04:00 committed by GitHub
parent 27a278e6e3
commit 7abedf9bbb
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 315 additions and 240 deletions
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1
core/vm/errors.go
View File

@ -26,4 +26,5 @@ var (
ErrTraceLimitReached = errors.New("the number of logs reached the specified limit") ErrTraceLimitReached = errors.New("the number of logs reached the specified limit")
ErrInsufficientBalance = errors.New("insufficient balance for transfer") ErrInsufficientBalance = errors.New("insufficient balance for transfer")
ErrContractAddressCollision = errors.New("contract address collision") ErrContractAddressCollision = errors.New("contract address collision")
ErrNoCompatibleInterpreter = errors.New("no compatible interpreter")
) )

47
core/vm/evm.go
View File

@ -51,7 +51,20 @@ func run(evm *EVM, contract *Contract, input []byte) ([]byte, error) {
return RunPrecompiledContract(p, input, contract) return RunPrecompiledContract(p, input, contract)
} }
} }
return evm.interpreter.Run(contract, input) for _, interpreter := range evm.interpreters {
if interpreter.CanRun(contract.Code) {
if evm.interpreter != interpreter {
// Ensure that the interpreter pointer is set back
// to its current value upon return.
defer func(i Interpreter) {
evm.interpreter = i
}(evm.interpreter)
evm.interpreter = interpreter
}
return interpreter.Run(contract, input)
}
}
return nil, ErrNoCompatibleInterpreter
} }
// Context provides the EVM with auxiliary information. Once provided // Context provides the EVM with auxiliary information. Once provided
@ -103,7 +116,8 @@ type EVM struct {
vmConfig Config vmConfig Config
// global (to this context) ethereum virtual machine // global (to this context) ethereum virtual machine
// used throughout the execution of the tx. // used throughout the execution of the tx.
interpreter *Interpreter interpreters []Interpreter
interpreter Interpreter
// abort is used to abort the EVM calling operations // abort is used to abort the EVM calling operations
// NOTE: must be set atomically // NOTE: must be set atomically
abort int32 abort int32
@ -117,14 +131,17 @@ type EVM struct {
// only ever be used *once*. // only ever be used *once*.
func NewEVM(ctx Context, statedb StateDB, chainConfig *params.ChainConfig, vmConfig Config) *EVM { func NewEVM(ctx Context, statedb StateDB, chainConfig *params.ChainConfig, vmConfig Config) *EVM {
evm := &EVM{ evm := &EVM{
Context: ctx, Context: ctx,
StateDB: statedb, StateDB: statedb,
vmConfig: vmConfig, vmConfig: vmConfig,
chainConfig: chainConfig, chainConfig: chainConfig,
chainRules: chainConfig.Rules(ctx.BlockNumber), chainRules: chainConfig.Rules(ctx.BlockNumber),
interpreters: make([]Interpreter, 1),
} }
evm.interpreter = NewInterpreter(evm, vmConfig) evm.interpreters[0] = NewEVMInterpreter(evm, vmConfig)
evm.interpreter = evm.interpreters[0]
return evm return evm
} }
@ -134,6 +151,11 @@ func (evm *EVM) Cancel() {
atomic.StoreInt32(&evm.abort, 1) atomic.StoreInt32(&evm.abort, 1)
} }
// Interpreter returns the current interpreter
func (evm *EVM) Interpreter() Interpreter {
return evm.interpreter
}
// Call executes the contract associated with the addr with the given input as // Call executes the contract associated with the addr with the given input as
// parameters. It also handles any necessary value transfer required and takes // parameters. It also handles any necessary value transfer required and takes
// the necessary steps to create accounts and reverses the state in case of an // the necessary steps to create accounts and reverses the state in case of an
@ -291,9 +313,9 @@ func (evm *EVM) StaticCall(caller ContractRef, addr common.Address, input []byte
// Make sure the readonly is only set if we aren't in readonly yet // Make sure the readonly is only set if we aren't in readonly yet
// this makes also sure that the readonly flag isn't removed for // this makes also sure that the readonly flag isn't removed for
// child calls. // child calls.
if !evm.interpreter.readOnly { if !evm.interpreter.IsReadOnly() {
evm.interpreter.readOnly = true evm.interpreter.SetReadOnly(true)
defer func() { evm.interpreter.readOnly = false }() defer func() { evm.interpreter.SetReadOnly(false) }()
} }
var ( var (
@ -414,6 +436,3 @@ func (evm *EVM) Create2(caller ContractRef, code []byte, gas uint64, endowment *
// ChainConfig returns the environment's chain configuration // ChainConfig returns the environment's chain configuration
func (evm *EVM) ChainConfig() *params.ChainConfig { return evm.chainConfig } func (evm *EVM) ChainConfig() *params.ChainConfig { return evm.chainConfig }
// Interpreter returns the EVM interpreter
func (evm *EVM) Interpreter() *Interpreter { return evm.interpreter }

377
core/vm/instructions.go
View File

@ -37,45 +37,45 @@ var (
errMaxCodeSizeExceeded = errors.New("evm: max code size exceeded") errMaxCodeSizeExceeded = errors.New("evm: max code size exceeded")
) )
func opAdd(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opAdd(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
math.U256(y.Add(x, y)) math.U256(y.Add(x, y))
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opSub(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSub(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
math.U256(y.Sub(x, y)) math.U256(y.Sub(x, y))
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opMul(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opMul(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop() x, y := stack.pop(), stack.pop()
stack.push(math.U256(x.Mul(x, y))) stack.push(math.U256(x.Mul(x, y)))
evm.interpreter.intPool.put(y) interpreter.intPool.put(y)
return nil, nil return nil, nil
} }
func opDiv(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opDiv(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
if y.Sign() != 0 { if y.Sign() != 0 {
math.U256(y.Div(x, y)) math.U256(y.Div(x, y))
} else { } else {
y.SetUint64(0) y.SetUint64(0)
} }
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opSdiv(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSdiv(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := math.S256(stack.pop()), math.S256(stack.pop()) x, y := math.S256(stack.pop()), math.S256(stack.pop())
res := evm.interpreter.intPool.getZero() res := interpreter.intPool.getZero()
if y.Sign() == 0 || x.Sign() == 0 { if y.Sign() == 0 || x.Sign() == 0 {
stack.push(res) stack.push(res)
@ -88,24 +88,24 @@ func opSdiv(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Sta
} }
stack.push(math.U256(res)) stack.push(math.U256(res))
} }
evm.interpreter.intPool.put(x, y) interpreter.intPool.put(x, y)
return nil, nil return nil, nil
} }
func opMod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opMod(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop() x, y := stack.pop(), stack.pop()
if y.Sign() == 0 { if y.Sign() == 0 {
stack.push(x.SetUint64(0)) stack.push(x.SetUint64(0))
} else { } else {
stack.push(math.U256(x.Mod(x, y))) stack.push(math.U256(x.Mod(x, y)))
} }
evm.interpreter.intPool.put(y) interpreter.intPool.put(y)
return nil, nil return nil, nil
} }
func opSmod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSmod(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := math.S256(stack.pop()), math.S256(stack.pop()) x, y := math.S256(stack.pop()), math.S256(stack.pop())
res := evm.interpreter.intPool.getZero() res := interpreter.intPool.getZero()
if y.Sign() == 0 { if y.Sign() == 0 {
stack.push(res) stack.push(res)
@ -118,20 +118,20 @@ func opSmod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Sta
} }
stack.push(math.U256(res)) stack.push(math.U256(res))
} }
evm.interpreter.intPool.put(x, y) interpreter.intPool.put(x, y)
return nil, nil return nil, nil
} }
func opExp(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opExp(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
base, exponent := stack.pop(), stack.pop() base, exponent := stack.pop(), stack.pop()
stack.push(math.Exp(base, exponent)) stack.push(math.Exp(base, exponent))
evm.interpreter.intPool.put(base, exponent) interpreter.intPool.put(base, exponent)
return nil, nil return nil, nil
} }
func opSignExtend(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSignExtend(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
back := stack.pop() back := stack.pop()
if back.Cmp(big.NewInt(31)) < 0 { if back.Cmp(big.NewInt(31)) < 0 {
bit := uint(back.Uint64()*8 + 7) bit := uint(back.Uint64()*8 + 7)
@ -147,39 +147,39 @@ func opSignExtend(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stac
stack.push(math.U256(num)) stack.push(math.U256(num))
} }
evm.interpreter.intPool.put(back) interpreter.intPool.put(back)
return nil, nil return nil, nil
} }
func opNot(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opNot(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x := stack.peek() x := stack.peek()
math.U256(x.Not(x)) math.U256(x.Not(x))
return nil, nil return nil, nil
} }
func opLt(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opLt(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
if x.Cmp(y) < 0 { if x.Cmp(y) < 0 {
y.SetUint64(1) y.SetUint64(1)
} else { } else {
y.SetUint64(0) y.SetUint64(0)
} }
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opGt(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opGt(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
if x.Cmp(y) > 0 { if x.Cmp(y) > 0 {
y.SetUint64(1) y.SetUint64(1)
} else { } else {
y.SetUint64(0) y.SetUint64(0)
} }
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opSlt(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSlt(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
xSign := x.Cmp(tt255) xSign := x.Cmp(tt255)
@ -199,11 +199,11 @@ func opSlt(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stac
y.SetUint64(0) y.SetUint64(0)
} }
} }
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opSgt(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSgt(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
xSign := x.Cmp(tt255) xSign := x.Cmp(tt255)
@ -223,22 +223,22 @@ func opSgt(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stac
y.SetUint64(0) y.SetUint64(0)
} }
} }
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opEq(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opEq(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
if x.Cmp(y) == 0 { if x.Cmp(y) == 0 {
y.SetUint64(1) y.SetUint64(1)
} else { } else {
y.SetUint64(0) y.SetUint64(0)
} }
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opIszero(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opIszero(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x := stack.peek() x := stack.peek()
if x.Sign() > 0 { if x.Sign() > 0 {
x.SetUint64(0) x.SetUint64(0)
@ -248,31 +248,31 @@ func opIszero(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *S
return nil, nil return nil, nil
} }
func opAnd(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opAnd(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop() x, y := stack.pop(), stack.pop()
stack.push(x.And(x, y)) stack.push(x.And(x, y))
evm.interpreter.intPool.put(y) interpreter.intPool.put(y)
return nil, nil return nil, nil
} }
func opOr(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opOr(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
y.Or(x, y) y.Or(x, y)
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opXor(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opXor(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.peek() x, y := stack.pop(), stack.peek()
y.Xor(x, y) y.Xor(x, y)
evm.interpreter.intPool.put(x) interpreter.intPool.put(x)
return nil, nil return nil, nil
} }
func opByte(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opByte(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
th, val := stack.pop(), stack.peek() th, val := stack.pop(), stack.peek()
if th.Cmp(common.Big32) < 0 { if th.Cmp(common.Big32) < 0 {
b := math.Byte(val, 32, int(th.Int64())) b := math.Byte(val, 32, int(th.Int64()))
@ -280,11 +280,11 @@ func opByte(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Sta
} else { } else {
val.SetUint64(0) val.SetUint64(0)
} }
evm.interpreter.intPool.put(th) interpreter.intPool.put(th)
return nil, nil return nil, nil
} }
func opAddmod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opAddmod(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y, z := stack.pop(), stack.pop(), stack.pop() x, y, z := stack.pop(), stack.pop(), stack.pop()
if z.Cmp(bigZero) > 0 { if z.Cmp(bigZero) > 0 {
x.Add(x, y) x.Add(x, y)
@ -293,11 +293,11 @@ func opAddmod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *S
} else { } else {
stack.push(x.SetUint64(0)) stack.push(x.SetUint64(0))
} }
evm.interpreter.intPool.put(y, z) interpreter.intPool.put(y, z)
return nil, nil return nil, nil
} }
func opMulmod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opMulmod(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y, z := stack.pop(), stack.pop(), stack.pop() x, y, z := stack.pop(), stack.pop(), stack.pop()
if z.Cmp(bigZero) > 0 { if z.Cmp(bigZero) > 0 {
x.Mul(x, y) x.Mul(x, y)
@ -306,17 +306,17 @@ func opMulmod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *S
} else { } else {
stack.push(x.SetUint64(0)) stack.push(x.SetUint64(0))
} }
evm.interpreter.intPool.put(y, z) interpreter.intPool.put(y, z)
return nil, nil return nil, nil
} }
// opSHL implements Shift Left // opSHL implements Shift Left
// The SHL instruction (shift left) pops 2 values from the stack, first arg1 and then arg2, // The SHL instruction (shift left) pops 2 values from the stack, first arg1 and then arg2,
// and pushes on the stack arg2 shifted to the left by arg1 number of bits. // and pushes on the stack arg2 shifted to the left by arg1 number of bits.
func opSHL(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSHL(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards // Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards
shift, value := math.U256(stack.pop()), math.U256(stack.peek()) shift, value := math.U256(stack.pop()), math.U256(stack.peek())
defer evm.interpreter.intPool.put(shift) // First operand back into the pool defer interpreter.intPool.put(shift) // First operand back into the pool
if shift.Cmp(common.Big256) >= 0 { if shift.Cmp(common.Big256) >= 0 {
value.SetUint64(0) value.SetUint64(0)
@ -331,10 +331,10 @@ func opSHL(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stac
// opSHR implements Logical Shift Right // opSHR implements Logical Shift Right
// The SHR instruction (logical shift right) pops 2 values from the stack, first arg1 and then arg2, // The SHR instruction (logical shift right) pops 2 values from the stack, first arg1 and then arg2,
// and pushes on the stack arg2 shifted to the right by arg1 number of bits with zero fill. // and pushes on the stack arg2 shifted to the right by arg1 number of bits with zero fill.
func opSHR(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSHR(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards // Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards
shift, value := math.U256(stack.pop()), math.U256(stack.peek()) shift, value := math.U256(stack.pop()), math.U256(stack.peek())
defer evm.interpreter.intPool.put(shift) // First operand back into the pool defer interpreter.intPool.put(shift) // First operand back into the pool
if shift.Cmp(common.Big256) >= 0 { if shift.Cmp(common.Big256) >= 0 {
value.SetUint64(0) value.SetUint64(0)
@ -349,10 +349,10 @@ func opSHR(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stac
// opSAR implements Arithmetic Shift Right // opSAR implements Arithmetic Shift Right
// The SAR instruction (arithmetic shift right) pops 2 values from the stack, first arg1 and then arg2, // The SAR instruction (arithmetic shift right) pops 2 values from the stack, first arg1 and then arg2,
// and pushes on the stack arg2 shifted to the right by arg1 number of bits with sign extension. // and pushes on the stack arg2 shifted to the right by arg1 number of bits with sign extension.
func opSAR(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSAR(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// Note, S256 returns (potentially) a new bigint, so we're popping, not peeking this one // Note, S256 returns (potentially) a new bigint, so we're popping, not peeking this one
shift, value := math.U256(stack.pop()), math.S256(stack.pop()) shift, value := math.U256(stack.pop()), math.S256(stack.pop())
defer evm.interpreter.intPool.put(shift) // First operand back into the pool defer interpreter.intPool.put(shift) // First operand back into the pool
if shift.Cmp(common.Big256) >= 0 { if shift.Cmp(common.Big256) >= 0 {
if value.Sign() > 0 { if value.Sign() > 0 {
@ -370,57 +370,58 @@ func opSAR(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stac
return nil, nil return nil, nil
} }
func opSha3(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSha3(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
offset, size := stack.pop(), stack.pop() offset, size := stack.pop(), stack.pop()
data := memory.Get(offset.Int64(), size.Int64()) data := memory.Get(offset.Int64(), size.Int64())
hash := crypto.Keccak256(data) hash := crypto.Keccak256(data)
evm := interpreter.evm
if evm.vmConfig.EnablePreimageRecording { if evm.vmConfig.EnablePreimageRecording {
evm.StateDB.AddPreimage(common.BytesToHash(hash), data) evm.StateDB.AddPreimage(common.BytesToHash(hash), data)
} }
stack.push(evm.interpreter.intPool.get().SetBytes(hash)) stack.push(interpreter.intPool.get().SetBytes(hash))
evm.interpreter.intPool.put(offset, size) interpreter.intPool.put(offset, size)
return nil, nil return nil, nil
} }
func opAddress(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opAddress(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(contract.Address().Big()) stack.push(contract.Address().Big())
return nil, nil return nil, nil
} }
func opBalance(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opBalance(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
slot := stack.peek() slot := stack.peek()
slot.Set(evm.StateDB.GetBalance(common.BigToAddress(slot))) slot.Set(interpreter.evm.StateDB.GetBalance(common.BigToAddress(slot)))
return nil, nil return nil, nil
} }
func opOrigin(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opOrigin(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.Origin.Big()) stack.push(interpreter.evm.Origin.Big())
return nil, nil return nil, nil
} }
func opCaller(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCaller(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(contract.Caller().Big()) stack.push(contract.Caller().Big())
return nil, nil return nil, nil
} }
func opCallValue(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCallValue(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.interpreter.intPool.get().Set(contract.value)) stack.push(interpreter.intPool.get().Set(contract.value))
return nil, nil return nil, nil
} }
func opCallDataLoad(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCallDataLoad(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.interpreter.intPool.get().SetBytes(getDataBig(contract.Input, stack.pop(), big32))) stack.push(interpreter.intPool.get().SetBytes(getDataBig(contract.Input, stack.pop(), big32)))
return nil, nil return nil, nil
} }
func opCallDataSize(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCallDataSize(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.interpreter.intPool.get().SetInt64(int64(len(contract.Input)))) stack.push(interpreter.intPool.get().SetInt64(int64(len(contract.Input))))
return nil, nil return nil, nil
} }
func opCallDataCopy(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCallDataCopy(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var ( var (
memOffset = stack.pop() memOffset = stack.pop()
dataOffset = stack.pop() dataOffset = stack.pop()
@ -428,48 +429,48 @@ func opCallDataCopy(pc *uint64, evm *EVM, contract *Contract, memory *Memory, st
) )
memory.Set(memOffset.Uint64(), length.Uint64(), getDataBig(contract.Input, dataOffset, length)) memory.Set(memOffset.Uint64(), length.Uint64(), getDataBig(contract.Input, dataOffset, length))
evm.interpreter.intPool.put(memOffset, dataOffset, length) interpreter.intPool.put(memOffset, dataOffset, length)
return nil, nil return nil, nil
} }
func opReturnDataSize(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opReturnDataSize(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.interpreter.intPool.get().SetUint64(uint64(len(evm.interpreter.returnData)))) stack.push(interpreter.intPool.get().SetUint64(uint64(len(interpreter.returnData))))
return nil, nil return nil, nil
} }
func opReturnDataCopy(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opReturnDataCopy(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var ( var (
memOffset = stack.pop() memOffset = stack.pop()
dataOffset = stack.pop() dataOffset = stack.pop()
length = stack.pop() length = stack.pop()
end = evm.interpreter.intPool.get().Add(dataOffset, length) end = interpreter.intPool.get().Add(dataOffset, length)
) )
defer evm.interpreter.intPool.put(memOffset, dataOffset, length, end) defer interpreter.intPool.put(memOffset, dataOffset, length, end)
if end.BitLen() > 64 || uint64(len(evm.interpreter.returnData)) < end.Uint64() { if end.BitLen() > 64 || uint64(len(interpreter.returnData)) < end.Uint64() {
return nil, errReturnDataOutOfBounds return nil, errReturnDataOutOfBounds
} }
memory.Set(memOffset.Uint64(), length.Uint64(), evm.interpreter.returnData[dataOffset.Uint64():end.Uint64()]) memory.Set(memOffset.Uint64(), length.Uint64(), interpreter.returnData[dataOffset.Uint64():end.Uint64()])
return nil, nil return nil, nil
} }
func opExtCodeSize(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opExtCodeSize(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
slot := stack.peek() slot := stack.peek()
slot.SetUint64(uint64(evm.StateDB.GetCodeSize(common.BigToAddress(slot)))) slot.SetUint64(uint64(interpreter.evm.StateDB.GetCodeSize(common.BigToAddress(slot))))
return nil, nil return nil, nil
} }
func opCodeSize(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCodeSize(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
l := evm.interpreter.intPool.get().SetInt64(int64(len(contract.Code))) l := interpreter.intPool.get().SetInt64(int64(len(contract.Code)))
stack.push(l) stack.push(l)
return nil, nil return nil, nil
} }
func opCodeCopy(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCodeCopy(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var ( var (
memOffset = stack.pop() memOffset = stack.pop()
codeOffset = stack.pop() codeOffset = stack.pop()
@ -478,21 +479,21 @@ func opCodeCopy(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack
codeCopy := getDataBig(contract.Code, codeOffset, length) codeCopy := getDataBig(contract.Code, codeOffset, length)
memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy) memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
evm.interpreter.intPool.put(memOffset, codeOffset, length) interpreter.intPool.put(memOffset, codeOffset, length)
return nil, nil return nil, nil
} }
func opExtCodeCopy(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var ( var (
addr = common.BigToAddress(stack.pop()) addr = common.BigToAddress(stack.pop())
memOffset = stack.pop() memOffset = stack.pop()
codeOffset = stack.pop() codeOffset = stack.pop()
length = stack.pop() length = stack.pop()
) )
codeCopy := getDataBig(evm.StateDB.GetCode(addr), codeOffset, length) codeCopy := getDataBig(interpreter.evm.StateDB.GetCode(addr), codeOffset, length)
memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy) memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
evm.interpreter.intPool.put(memOffset, codeOffset, length) interpreter.intPool.put(memOffset, codeOffset, length)
return nil, nil return nil, nil
} }
@ -522,102 +523,102 @@ func opExtCodeCopy(pc *uint64, evm *EVM, contract *Contract, memory *Memory, sta
// //
// (6) Caller tries to get the code hash for an account which is marked as deleted, // (6) Caller tries to get the code hash for an account which is marked as deleted,
// this account should be regarded as a non-existent account and zero should be returned. // this account should be regarded as a non-existent account and zero should be returned.
func opExtCodeHash(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opExtCodeHash(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
slot := stack.peek() slot := stack.peek()
slot.SetBytes(evm.StateDB.GetCodeHash(common.BigToAddress(slot)).Bytes()) slot.SetBytes(interpreter.evm.StateDB.GetCodeHash(common.BigToAddress(slot)).Bytes())
return nil, nil return nil, nil
} }
func opGasprice(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opGasprice(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.interpreter.intPool.get().Set(evm.GasPrice)) stack.push(interpreter.intPool.get().Set(interpreter.evm.GasPrice))
return nil, nil return nil, nil
} }
func opBlockhash(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opBlockhash(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
num := stack.pop() num := stack.pop()
n := evm.interpreter.intPool.get().Sub(evm.BlockNumber, common.Big257) n := interpreter.intPool.get().Sub(interpreter.evm.BlockNumber, common.Big257)
if num.Cmp(n) > 0 && num.Cmp(evm.BlockNumber) < 0 { if num.Cmp(n) > 0 && num.Cmp(interpreter.evm.BlockNumber) < 0 {
stack.push(evm.GetHash(num.Uint64()).Big()) stack.push(interpreter.evm.GetHash(num.Uint64()).Big())
} else { } else {
stack.push(evm.interpreter.intPool.getZero()) stack.push(interpreter.intPool.getZero())
} }
evm.interpreter.intPool.put(num, n) interpreter.intPool.put(num, n)
return nil, nil return nil, nil
} }
func opCoinbase(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCoinbase(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.Coinbase.Big()) stack.push(interpreter.evm.Coinbase.Big())
return nil, nil return nil, nil
} }
func opTimestamp(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opTimestamp(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(math.U256(evm.interpreter.intPool.get().Set(evm.Time))) stack.push(math.U256(interpreter.intPool.get().Set(interpreter.evm.Time)))
return nil, nil return nil, nil
} }
func opNumber(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opNumber(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(math.U256(evm.interpreter.intPool.get().Set(evm.BlockNumber))) stack.push(math.U256(interpreter.intPool.get().Set(interpreter.evm.BlockNumber)))
return nil, nil return nil, nil
} }
func opDifficulty(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opDifficulty(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(math.U256(evm.interpreter.intPool.get().Set(evm.Difficulty))) stack.push(math.U256(interpreter.intPool.get().Set(interpreter.evm.Difficulty)))
return nil, nil return nil, nil
} }
func opGasLimit(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opGasLimit(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(math.U256(evm.interpreter.intPool.get().SetUint64(evm.GasLimit))) stack.push(math.U256(interpreter.intPool.get().SetUint64(interpreter.evm.GasLimit)))
return nil, nil return nil, nil
} }
func opPop(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opPop(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
evm.interpreter.intPool.put(stack.pop()) interpreter.intPool.put(stack.pop())
return nil, nil return nil, nil
} }
func opMload(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opMload(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
offset := stack.pop() offset := stack.pop()
val := evm.interpreter.intPool.get().SetBytes(memory.Get(offset.Int64(), 32)) val := interpreter.intPool.get().SetBytes(memory.Get(offset.Int64(), 32))
stack.push(val) stack.push(val)
evm.interpreter.intPool.put(offset) interpreter.intPool.put(offset)
return nil, nil return nil, nil
} }
func opMstore(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opMstore(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// pop value of the stack // pop value of the stack
mStart, val := stack.pop(), stack.pop() mStart, val := stack.pop(), stack.pop()
memory.Set32(mStart.Uint64(), val) memory.Set32(mStart.Uint64(), val)
evm.interpreter.intPool.put(mStart, val) interpreter.intPool.put(mStart, val)
return nil, nil return nil, nil
} }
func opMstore8(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opMstore8(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
off, val := stack.pop().Int64(), stack.pop().Int64() off, val := stack.pop().Int64(), stack.pop().Int64()
memory.store[off] = byte(val & 0xff) memory.store[off] = byte(val & 0xff)
return nil, nil return nil, nil
} }
func opSload(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSload(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
loc := stack.peek() loc := stack.peek()
val := evm.StateDB.GetState(contract.Address(), common.BigToHash(loc)) val := interpreter.evm.StateDB.GetState(contract.Address(), common.BigToHash(loc))
loc.SetBytes(val.Bytes()) loc.SetBytes(val.Bytes())
return nil, nil return nil, nil
} }
func opSstore(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSstore(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
loc := common.BigToHash(stack.pop()) loc := common.BigToHash(stack.pop())
val := stack.pop() val := stack.pop()
evm.StateDB.SetState(contract.Address(), loc, common.BigToHash(val)) interpreter.evm.StateDB.SetState(contract.Address(), loc, common.BigToHash(val))
evm.interpreter.intPool.put(val) interpreter.intPool.put(val)
return nil, nil return nil, nil
} }
func opJump(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opJump(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
pos := stack.pop() pos := stack.pop()
if !contract.jumpdests.has(contract.CodeHash, contract.Code, pos) { if !contract.jumpdests.has(contract.CodeHash, contract.Code, pos) {
nop := contract.GetOp(pos.Uint64()) nop := contract.GetOp(pos.Uint64())
@ -625,11 +626,11 @@ func opJump(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Sta
} }
*pc = pos.Uint64() *pc = pos.Uint64()
evm.interpreter.intPool.put(pos) interpreter.intPool.put(pos)
return nil, nil return nil, nil
} }
func opJumpi(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opJumpi(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
pos, cond := stack.pop(), stack.pop() pos, cond := stack.pop(), stack.pop()
if cond.Sign() != 0 { if cond.Sign() != 0 {
if !contract.jumpdests.has(contract.CodeHash, contract.Code, pos) { if !contract.jumpdests.has(contract.CodeHash, contract.Code, pos) {
@ -641,55 +642,55 @@ func opJumpi(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *St
*pc++ *pc++
} }
evm.interpreter.intPool.put(pos, cond) interpreter.intPool.put(pos, cond)
return nil, nil return nil, nil
} }
func opJumpdest(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opJumpdest(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
return nil, nil return nil, nil
} }
func opPc(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opPc(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.interpreter.intPool.get().SetUint64(*pc)) stack.push(interpreter.intPool.get().SetUint64(*pc))
return nil, nil return nil, nil
} }
func opMsize(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opMsize(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.interpreter.intPool.get().SetInt64(int64(memory.Len()))) stack.push(interpreter.intPool.get().SetInt64(int64(memory.Len())))
return nil, nil return nil, nil
} }
func opGas(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opGas(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(evm.interpreter.intPool.get().SetUint64(contract.Gas)) stack.push(interpreter.intPool.get().SetUint64(contract.Gas))
return nil, nil return nil, nil
} }
func opCreate(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCreate(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var ( var (
value = stack.pop() value = stack.pop()
offset, size = stack.pop(), stack.pop() offset, size = stack.pop(), stack.pop()
input = memory.Get(offset.Int64(), size.Int64()) input = memory.Get(offset.Int64(), size.Int64())
gas = contract.Gas gas = contract.Gas
) )
if evm.ChainConfig().IsEIP150(evm.BlockNumber) { if interpreter.evm.ChainConfig().IsEIP150(interpreter.evm.BlockNumber) {
gas -= gas / 64 gas -= gas / 64
} }
contract.UseGas(gas) contract.UseGas(gas)
res, addr, returnGas, suberr := evm.Create(contract, input, gas, value) res, addr, returnGas, suberr := interpreter.evm.Create(contract, input, gas, value)
// Push item on the stack based on the returned error. If the ruleset is // Push item on the stack based on the returned error. If the ruleset is
// homestead we must check for CodeStoreOutOfGasError (homestead only // homestead we must check for CodeStoreOutOfGasError (homestead only
// rule) and treat as an error, if the ruleset is frontier we must // rule) and treat as an error, if the ruleset is frontier we must
// ignore this error and pretend the operation was successful. // ignore this error and pretend the operation was successful.
if evm.ChainConfig().IsHomestead(evm.BlockNumber) && suberr == ErrCodeStoreOutOfGas { if interpreter.evm.ChainConfig().IsHomestead(interpreter.evm.BlockNumber) && suberr == ErrCodeStoreOutOfGas {
stack.push(evm.interpreter.intPool.getZero()) stack.push(interpreter.intPool.getZero())
} else if suberr != nil && suberr != ErrCodeStoreOutOfGas { } else if suberr != nil && suberr != ErrCodeStoreOutOfGas {
stack.push(evm.interpreter.intPool.getZero()) stack.push(interpreter.intPool.getZero())
} else { } else {
stack.push(addr.Big()) stack.push(addr.Big())
} }
contract.Gas += returnGas contract.Gas += returnGas
evm.interpreter.intPool.put(value, offset, size) interpreter.intPool.put(value, offset, size)
if suberr == errExecutionReverted { if suberr == errExecutionReverted {
return res, nil return res, nil
@ -697,7 +698,7 @@ func opCreate(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *S
return nil, nil return nil, nil
} }
func opCreate2(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCreate2(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var ( var (
endowment = stack.pop() endowment = stack.pop()
offset, size = stack.pop(), stack.pop() offset, size = stack.pop(), stack.pop()
@ -709,15 +710,15 @@ func opCreate2(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *
// Apply EIP150 // Apply EIP150
gas -= gas / 64 gas -= gas / 64
contract.UseGas(gas) contract.UseGas(gas)
res, addr, returnGas, suberr := evm.Create2(contract, input, gas, endowment, salt) res, addr, returnGas, suberr := interpreter.evm.Create2(contract, input, gas, endowment, salt)
// Push item on the stack based on the returned error. // Push item on the stack based on the returned error.
if suberr != nil { if suberr != nil {
stack.push(evm.interpreter.intPool.getZero()) stack.push(interpreter.intPool.getZero())
} else { } else {
stack.push(addr.Big()) stack.push(addr.Big())
} }
contract.Gas += returnGas contract.Gas += returnGas
evm.interpreter.intPool.put(endowment, offset, size, salt) interpreter.intPool.put(endowment, offset, size, salt)
if suberr == errExecutionReverted { if suberr == errExecutionReverted {
return res, nil return res, nil
@ -725,10 +726,10 @@ func opCreate2(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *
return nil, nil return nil, nil
} }
func opCall(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCall(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// Pop gas. The actual gas in in evm.callGasTemp. // Pop gas. The actual gas in in interpreter.evm.callGasTemp.
evm.interpreter.intPool.put(stack.pop()) interpreter.intPool.put(stack.pop())
gas := evm.callGasTemp gas := interpreter.evm.callGasTemp
// Pop other call parameters. // Pop other call parameters.
addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop() addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
toAddr := common.BigToAddress(addr) toAddr := common.BigToAddress(addr)
@ -739,25 +740,25 @@ func opCall(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Sta
if value.Sign() != 0 { if value.Sign() != 0 {
gas += params.CallStipend gas += params.CallStipend
} }
ret, returnGas, err := evm.Call(contract, toAddr, args, gas, value) ret, returnGas, err := interpreter.evm.Call(contract, toAddr, args, gas, value)
if err != nil { if err != nil {
stack.push(evm.interpreter.intPool.getZero()) stack.push(interpreter.intPool.getZero())
} else { } else {
stack.push(evm.interpreter.intPool.get().SetUint64(1)) stack.push(interpreter.intPool.get().SetUint64(1))
} }
if err == nil || err == errExecutionReverted { if err == nil || err == errExecutionReverted {
memory.Set(retOffset.Uint64(), retSize.Uint64(), ret) memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
} }
contract.Gas += returnGas contract.Gas += returnGas
evm.interpreter.intPool.put(addr, value, inOffset, inSize, retOffset, retSize) interpreter.intPool.put(addr, value, inOffset, inSize, retOffset, retSize)
return ret, nil return ret, nil
} }
func opCallCode(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opCallCode(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// Pop gas. The actual gas is in evm.callGasTemp. // Pop gas. The actual gas is in interpreter.evm.callGasTemp.
evm.interpreter.intPool.put(stack.pop()) interpreter.intPool.put(stack.pop())
gas := evm.callGasTemp gas := interpreter.evm.callGasTemp
// Pop other call parameters. // Pop other call parameters.
addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop() addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
toAddr := common.BigToAddress(addr) toAddr := common.BigToAddress(addr)
@ -768,96 +769,96 @@ func opCallCode(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack
if value.Sign() != 0 { if value.Sign() != 0 {
gas += params.CallStipend gas += params.CallStipend
} }
ret, returnGas, err := evm.CallCode(contract, toAddr, args, gas, value) ret, returnGas, err := interpreter.evm.CallCode(contract, toAddr, args, gas, value)
if err != nil { if err != nil {
stack.push(evm.interpreter.intPool.getZero()) stack.push(interpreter.intPool.getZero())
} else { } else {
stack.push(evm.interpreter.intPool.get().SetUint64(1)) stack.push(interpreter.intPool.get().SetUint64(1))
} }
if err == nil || err == errExecutionReverted { if err == nil || err == errExecutionReverted {
memory.Set(retOffset.Uint64(), retSize.Uint64(), ret) memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
} }
contract.Gas += returnGas contract.Gas += returnGas
evm.interpreter.intPool.put(addr, value, inOffset, inSize, retOffset, retSize) interpreter.intPool.put(addr, value, inOffset, inSize, retOffset, retSize)
return ret, nil return ret, nil
} }
func opDelegateCall(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opDelegateCall(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// Pop gas. The actual gas is in evm.callGasTemp. // Pop gas. The actual gas is in interpreter.evm.callGasTemp.
evm.interpreter.intPool.put(stack.pop()) interpreter.intPool.put(stack.pop())
gas := evm.callGasTemp gas := interpreter.evm.callGasTemp
// Pop other call parameters. // Pop other call parameters.
addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop() addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
toAddr := common.BigToAddress(addr) toAddr := common.BigToAddress(addr)
// Get arguments from the memory. // Get arguments from the memory.
args := memory.Get(inOffset.Int64(), inSize.Int64()) args := memory.Get(inOffset.Int64(), inSize.Int64())
ret, returnGas, err := evm.DelegateCall(contract, toAddr, args, gas) ret, returnGas, err := interpreter.evm.DelegateCall(contract, toAddr, args, gas)
if err != nil { if err != nil {
stack.push(evm.interpreter.intPool.getZero()) stack.push(interpreter.intPool.getZero())
} else { } else {
stack.push(evm.interpreter.intPool.get().SetUint64(1)) stack.push(interpreter.intPool.get().SetUint64(1))
} }
if err == nil || err == errExecutionReverted { if err == nil || err == errExecutionReverted {
memory.Set(retOffset.Uint64(), retSize.Uint64(), ret) memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
} }
contract.Gas += returnGas contract.Gas += returnGas
evm.interpreter.intPool.put(addr, inOffset, inSize, retOffset, retSize) interpreter.intPool.put(addr, inOffset, inSize, retOffset, retSize)
return ret, nil return ret, nil
} }
func opStaticCall(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opStaticCall(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// Pop gas. The actual gas is in evm.callGasTemp. // Pop gas. The actual gas is in interpreter.evm.callGasTemp.
evm.interpreter.intPool.put(stack.pop()) interpreter.intPool.put(stack.pop())
gas := evm.callGasTemp gas := interpreter.evm.callGasTemp
// Pop other call parameters. // Pop other call parameters.
addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop() addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
toAddr := common.BigToAddress(addr) toAddr := common.BigToAddress(addr)
// Get arguments from the memory. // Get arguments from the memory.
args := memory.Get(inOffset.Int64(), inSize.Int64()) args := memory.Get(inOffset.Int64(), inSize.Int64())
ret, returnGas, err := evm.StaticCall(contract, toAddr, args, gas) ret, returnGas, err := interpreter.evm.StaticCall(contract, toAddr, args, gas)
if err != nil { if err != nil {
stack.push(evm.interpreter.intPool.getZero()) stack.push(interpreter.intPool.getZero())
} else { } else {
stack.push(evm.interpreter.intPool.get().SetUint64(1)) stack.push(interpreter.intPool.get().SetUint64(1))
} }
if err == nil || err == errExecutionReverted { if err == nil || err == errExecutionReverted {
memory.Set(retOffset.Uint64(), retSize.Uint64(), ret) memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
} }
contract.Gas += returnGas contract.Gas += returnGas
evm.interpreter.intPool.put(addr, inOffset, inSize, retOffset, retSize) interpreter.intPool.put(addr, inOffset, inSize, retOffset, retSize)
return ret, nil return ret, nil
} }
func opReturn(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opReturn(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
offset, size := stack.pop(), stack.pop() offset, size := stack.pop(), stack.pop()
ret := memory.GetPtr(offset.Int64(), size.Int64()) ret := memory.GetPtr(offset.Int64(), size.Int64())
evm.interpreter.intPool.put(offset, size) interpreter.intPool.put(offset, size)
return ret, nil return ret, nil
} }
func opRevert(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opRevert(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
offset, size := stack.pop(), stack.pop() offset, size := stack.pop(), stack.pop()
ret := memory.GetPtr(offset.Int64(), size.Int64()) ret := memory.GetPtr(offset.Int64(), size.Int64())
evm.interpreter.intPool.put(offset, size) interpreter.intPool.put(offset, size)
return ret, nil return ret, nil
} }
func opStop(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opStop(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
return nil, nil return nil, nil
} }
func opSuicide(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { func opSuicide(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
balance := evm.StateDB.GetBalance(contract.Address()) balance := interpreter.evm.StateDB.GetBalance(contract.Address())
evm.StateDB.AddBalance(common.BigToAddress(stack.pop()), balance) interpreter.evm.StateDB.AddBalance(common.BigToAddress(stack.pop()), balance)
evm.StateDB.Suicide(contract.Address()) interpreter.evm.StateDB.Suicide(contract.Address())
return nil, nil return nil, nil
} }
@ -865,7 +866,7 @@ func opSuicide(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *
// make log instruction function // make log instruction function
func makeLog(size int) executionFunc { func makeLog(size int) executionFunc {
return func(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { return func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
topics := make([]common.Hash, size) topics := make([]common.Hash, size)
mStart, mSize := stack.pop(), stack.pop() mStart, mSize := stack.pop(), stack.pop()
for i := 0; i < size; i++ { for i := 0; i < size; i++ {
@ -873,23 +874,23 @@ func makeLog(size int) executionFunc {
} }
d := memory.Get(mStart.Int64(), mSize.Int64()) d := memory.Get(mStart.Int64(), mSize.Int64())
evm.StateDB.AddLog(&types.Log{ interpreter.evm.StateDB.AddLog(&types.Log{
Address: contract.Address(), Address: contract.Address(),
Topics: topics, Topics: topics,
Data: d, Data: d,
// This is a non-consensus field, but assigned here because // This is a non-consensus field, but assigned here because
// core/state doesn't know the current block number. // core/state doesn't know the current block number.
BlockNumber: evm.BlockNumber.Uint64(), BlockNumber: interpreter.evm.BlockNumber.Uint64(),
}) })
evm.interpreter.intPool.put(mStart, mSize) interpreter.intPool.put(mStart, mSize)
return nil, nil return nil, nil
} }
} }
// make push instruction function // make push instruction function
func makePush(size uint64, pushByteSize int) executionFunc { func makePush(size uint64, pushByteSize int) executionFunc {
return func(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { return func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
codeLen := len(contract.Code) codeLen := len(contract.Code)
startMin := codeLen startMin := codeLen
@ -902,7 +903,7 @@ func makePush(size uint64, pushByteSize int) executionFunc {
endMin = startMin + pushByteSize endMin = startMin + pushByteSize
} }
integer := evm.interpreter.intPool.get() integer := interpreter.intPool.get()
stack.push(integer.SetBytes(common.RightPadBytes(contract.Code[startMin:endMin], pushByteSize))) stack.push(integer.SetBytes(common.RightPadBytes(contract.Code[startMin:endMin], pushByteSize)))
*pc += size *pc += size
@ -912,8 +913,8 @@ func makePush(size uint64, pushByteSize int) executionFunc {
// make dup instruction function // make dup instruction function
func makeDup(size int64) executionFunc { func makeDup(size int64) executionFunc {
return func(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { return func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.dup(evm.interpreter.intPool, int(size)) stack.dup(interpreter.intPool, int(size))
return nil, nil return nil, nil
} }
} }
@ -922,7 +923,7 @@ func makeDup(size int64) executionFunc {
func makeSwap(size int64) executionFunc { func makeSwap(size int64) executionFunc {
// switch n + 1 otherwise n would be swapped with n // switch n + 1 otherwise n would be swapped with n
size++ size++
return func(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { return func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.swap(int(size)) stack.swap(int(size))
return nil, nil return nil, nil
} }

75
core/vm/instructions_test.go
View File

@ -30,20 +30,23 @@ type twoOperandTest struct {
expected string expected string
} }
func testTwoOperandOp(t *testing.T, tests []twoOperandTest, opFn func(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error)) { func testTwoOperandOp(t *testing.T, tests []twoOperandTest, opFn func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error)) {
var ( var (
env = NewEVM(Context{}, nil, params.TestChainConfig, Config{}) env = NewEVM(Context{}, nil, params.TestChainConfig, Config{})
stack = newstack() stack = newstack()
pc = uint64(0) pc = uint64(0)
evmInterpreter = NewEVMInterpreter(env, env.vmConfig)
) )
env.interpreter.intPool = poolOfIntPools.get()
env.interpreter = evmInterpreter
evmInterpreter.intPool = poolOfIntPools.get()
for i, test := range tests { for i, test := range tests {
x := new(big.Int).SetBytes(common.Hex2Bytes(test.x)) x := new(big.Int).SetBytes(common.Hex2Bytes(test.x))
shift := new(big.Int).SetBytes(common.Hex2Bytes(test.y)) shift := new(big.Int).SetBytes(common.Hex2Bytes(test.y))
expected := new(big.Int).SetBytes(common.Hex2Bytes(test.expected)) expected := new(big.Int).SetBytes(common.Hex2Bytes(test.expected))
stack.push(x) stack.push(x)
stack.push(shift) stack.push(shift)
opFn(&pc, env, nil, nil, stack) opFn(&pc, evmInterpreter, nil, nil, stack)
actual := stack.pop() actual := stack.pop()
if actual.Cmp(expected) != 0 { if actual.Cmp(expected) != 0 {
t.Errorf("Testcase %d, expected %v, got %v", i, expected, actual) t.Errorf("Testcase %d, expected %v, got %v", i, expected, actual)
@ -51,13 +54,13 @@ func testTwoOperandOp(t *testing.T, tests []twoOperandTest, opFn func(pc *uint64
// Check pool usage // Check pool usage
// 1.pool is not allowed to contain anything on the stack // 1.pool is not allowed to contain anything on the stack
// 2.pool is not allowed to contain the same pointers twice // 2.pool is not allowed to contain the same pointers twice
if env.interpreter.intPool.pool.len() > 0 { if evmInterpreter.intPool.pool.len() > 0 {
poolvals := make(map[*big.Int]struct{}) poolvals := make(map[*big.Int]struct{})
poolvals[actual] = struct{}{} poolvals[actual] = struct{}{}
for env.interpreter.intPool.pool.len() > 0 { for evmInterpreter.intPool.pool.len() > 0 {
key := env.interpreter.intPool.get() key := evmInterpreter.intPool.get()
if _, exist := poolvals[key]; exist { if _, exist := poolvals[key]; exist {
t.Errorf("Testcase %d, pool contains double-entry", i) t.Errorf("Testcase %d, pool contains double-entry", i)
} }
@ -65,15 +68,18 @@ func testTwoOperandOp(t *testing.T, tests []twoOperandTest, opFn func(pc *uint64
} }
} }
} }
poolOfIntPools.put(env.interpreter.intPool) poolOfIntPools.put(evmInterpreter.intPool)
} }
func TestByteOp(t *testing.T) { func TestByteOp(t *testing.T) {
var ( var (
env = NewEVM(Context{}, nil, params.TestChainConfig, Config{}) env = NewEVM(Context{}, nil, params.TestChainConfig, Config{})
stack = newstack() stack = newstack()
evmInterpreter = NewEVMInterpreter(env, env.vmConfig)
) )
env.interpreter.intPool = poolOfIntPools.get()
env.interpreter = evmInterpreter
evmInterpreter.intPool = poolOfIntPools.get()
tests := []struct { tests := []struct {
v string v string
th uint64 th uint64
@ -94,13 +100,13 @@ func TestByteOp(t *testing.T) {
th := new(big.Int).SetUint64(test.th) th := new(big.Int).SetUint64(test.th)
stack.push(val) stack.push(val)
stack.push(th) stack.push(th)
opByte(&pc, env, nil, nil, stack) opByte(&pc, evmInterpreter, nil, nil, stack)
actual := stack.pop() actual := stack.pop()
if actual.Cmp(test.expected) != 0 { if actual.Cmp(test.expected) != 0 {
t.Fatalf("Expected [%v] %v:th byte to be %v, was %v.", test.v, test.th, test.expected, actual) t.Fatalf("Expected [%v] %v:th byte to be %v, was %v.", test.v, test.th, test.expected, actual)
} }
} }
poolOfIntPools.put(env.interpreter.intPool) poolOfIntPools.put(evmInterpreter.intPool)
} }
func TestSHL(t *testing.T) { func TestSHL(t *testing.T) {
@ -200,11 +206,14 @@ func TestSLT(t *testing.T) {
testTwoOperandOp(t, tests, opSlt) testTwoOperandOp(t, tests, opSlt)
} }
func opBenchmark(bench *testing.B, op func(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error), args ...string) { func opBenchmark(bench *testing.B, op func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error), args ...string) {
var ( var (
env = NewEVM(Context{}, nil, params.TestChainConfig, Config{}) env = NewEVM(Context{}, nil, params.TestChainConfig, Config{})
stack = newstack() stack = newstack()
evmInterpreter = NewEVMInterpreter(env, env.vmConfig)
) )
env.interpreter = evmInterpreter
// convert args // convert args
byteArgs := make([][]byte, len(args)) byteArgs := make([][]byte, len(args))
for i, arg := range args { for i, arg := range args {
@ -217,7 +226,7 @@ func opBenchmark(bench *testing.B, op func(pc *uint64, evm *EVM, contract *Contr
a := new(big.Int).SetBytes(arg) a := new(big.Int).SetBytes(arg)
stack.push(a) stack.push(a)
} }
op(&pc, env, nil, nil, stack) op(&pc, evmInterpreter, nil, nil, stack)
stack.pop() stack.pop()
} }
} }
@ -432,33 +441,39 @@ func BenchmarkOpIsZero(b *testing.B) {
func TestOpMstore(t *testing.T) { func TestOpMstore(t *testing.T) {
var ( var (
env = NewEVM(Context{}, nil, params.TestChainConfig, Config{}) env = NewEVM(Context{}, nil, params.TestChainConfig, Config{})
stack = newstack() stack = newstack()
mem = NewMemory() mem = NewMemory()
evmInterpreter = NewEVMInterpreter(env, env.vmConfig)
) )
env.interpreter.intPool = poolOfIntPools.get()
env.interpreter = evmInterpreter
evmInterpreter.intPool = poolOfIntPools.get()
mem.Resize(64) mem.Resize(64)
pc := uint64(0) pc := uint64(0)
v := "abcdef00000000000000abba000000000deaf000000c0de00100000000133700" v := "abcdef00000000000000abba000000000deaf000000c0de00100000000133700"
stack.pushN(new(big.Int).SetBytes(common.Hex2Bytes(v)), big.NewInt(0)) stack.pushN(new(big.Int).SetBytes(common.Hex2Bytes(v)), big.NewInt(0))
opMstore(&pc, env, nil, mem, stack) opMstore(&pc, evmInterpreter, nil, mem, stack)
if got := common.Bytes2Hex(mem.Get(0, 32)); got != v { if got := common.Bytes2Hex(mem.Get(0, 32)); got != v {
t.Fatalf("Mstore fail, got %v, expected %v", got, v) t.Fatalf("Mstore fail, got %v, expected %v", got, v)
} }
stack.pushN(big.NewInt(0x1), big.NewInt(0)) stack.pushN(big.NewInt(0x1), big.NewInt(0))
opMstore(&pc, env, nil, mem, stack) opMstore(&pc, evmInterpreter, nil, mem, stack)
if common.Bytes2Hex(mem.Get(0, 32)) != "0000000000000000000000000000000000000000000000000000000000000001" { if common.Bytes2Hex(mem.Get(0, 32)) != "0000000000000000000000000000000000000000000000000000000000000001" {
t.Fatalf("Mstore failed to overwrite previous value") t.Fatalf("Mstore failed to overwrite previous value")
} }
poolOfIntPools.put(env.interpreter.intPool) poolOfIntPools.put(evmInterpreter.intPool)
} }
func BenchmarkOpMstore(bench *testing.B) { func BenchmarkOpMstore(bench *testing.B) {
var ( var (
env = NewEVM(Context{}, nil, params.TestChainConfig, Config{}) env = NewEVM(Context{}, nil, params.TestChainConfig, Config{})
stack = newstack() stack = newstack()
mem = NewMemory() mem = NewMemory()
evmInterpreter = NewEVMInterpreter(env, env.vmConfig)
) )
env.interpreter = evmInterpreter
mem.Resize(64) mem.Resize(64)
pc := uint64(0) pc := uint64(0)
memStart := big.NewInt(0) memStart := big.NewInt(0)
@ -467,6 +482,6 @@ func BenchmarkOpMstore(bench *testing.B) {
bench.ResetTimer() bench.ResetTimer()
for i := 0; i < bench.N; i++ { for i := 0; i < bench.N; i++ {
stack.pushN(value, memStart) stack.pushN(value, memStart)
opMstore(&pc, env, nil, mem, stack) opMstore(&pc, evmInterpreter, nil, mem, stack)
} }
} }

53
core/vm/interpreter.go
View File

@ -45,7 +45,30 @@ type Config struct {
// passed environment to query external sources for state information. // passed environment to query external sources for state information.
// The Interpreter will run the byte code VM based on the passed // The Interpreter will run the byte code VM based on the passed
// configuration. // configuration.
type Interpreter struct { type Interpreter interface {
// Run loops and evaluates the contract's code with the given input data and returns
// the return byte-slice and an error if one occurred.
Run(contract *Contract, input []byte) ([]byte, error)
// CanRun tells if the contract, passed as an argument, can be
// run by the current interpreter. This is meant so that the
// caller can do something like:
//
// ```golang
// for _, interpreter := range interpreters {
// if interpreter.CanRun(contract.code) {
// interpreter.Run(contract.code, input)
// }
// }
// ```
CanRun([]byte) bool
// IsReadOnly reports if the interpreter is in read only mode.
IsReadOnly() bool
// SetReadOnly sets (or unsets) read only mode in the interpreter.
SetReadOnly(bool)
}
// EVMInterpreter represents an EVM interpreter
type EVMInterpreter struct {
evm *EVM evm *EVM
cfg Config cfg Config
gasTable params.GasTable gasTable params.GasTable
@ -55,8 +78,8 @@ type Interpreter struct {
returnData []byte // Last CALL's return data for subsequent reuse returnData []byte // Last CALL's return data for subsequent reuse
} }
// NewInterpreter returns a new instance of the Interpreter. // NewEVMInterpreter returns a new instance of the Interpreter.
func NewInterpreter(evm *EVM, cfg Config) *Interpreter { func NewEVMInterpreter(evm *EVM, cfg Config) *EVMInterpreter {
// We use the STOP instruction whether to see // We use the STOP instruction whether to see
// the jump table was initialised. If it was not // the jump table was initialised. If it was not
// we'll set the default jump table. // we'll set the default jump table.
@ -73,14 +96,14 @@ func NewInterpreter(evm *EVM, cfg Config) *Interpreter {
} }
} }
return &Interpreter{ return &EVMInterpreter{
evm: evm, evm: evm,
cfg: cfg, cfg: cfg,
gasTable: evm.ChainConfig().GasTable(evm.BlockNumber), gasTable: evm.ChainConfig().GasTable(evm.BlockNumber),
} }
} }
func (in *Interpreter) enforceRestrictions(op OpCode, operation operation, stack *Stack) error { func (in *EVMInterpreter) enforceRestrictions(op OpCode, operation operation, stack *Stack) error {
if in.evm.chainRules.IsByzantium { if in.evm.chainRules.IsByzantium {
if in.readOnly { if in.readOnly {
// If the interpreter is operating in readonly mode, make sure no // If the interpreter is operating in readonly mode, make sure no
@ -102,7 +125,7 @@ func (in *Interpreter) enforceRestrictions(op OpCode, operation operation, stack
// It's important to note that any errors returned by the interpreter should be // It's important to note that any errors returned by the interpreter should be
// considered a revert-and-consume-all-gas operation except for // considered a revert-and-consume-all-gas operation except for
// errExecutionReverted which means revert-and-keep-gas-left. // errExecutionReverted which means revert-and-keep-gas-left.
func (in *Interpreter) Run(contract *Contract, input []byte) (ret []byte, err error) { func (in *EVMInterpreter) Run(contract *Contract, input []byte) (ret []byte, err error) {
if in.intPool == nil { if in.intPool == nil {
in.intPool = poolOfIntPools.get() in.intPool = poolOfIntPools.get()
defer func() { defer func() {
@ -209,7 +232,7 @@ func (in *Interpreter) Run(contract *Contract, input []byte) (ret []byte, err er
} }
// execute the operation // execute the operation
res, err := operation.execute(&pc, in.evm, contract, mem, stack) res, err := operation.execute(&pc, in, contract, mem, stack)
// verifyPool is a build flag. Pool verification makes sure the integrity // verifyPool is a build flag. Pool verification makes sure the integrity
// of the integer pool by comparing values to a default value. // of the integer pool by comparing values to a default value.
if verifyPool { if verifyPool {
@ -234,3 +257,19 @@ func (in *Interpreter) Run(contract *Contract, input []byte) (ret []byte, err er
} }
return nil, nil return nil, nil
} }
// CanRun tells if the contract, passed as an argument, can be
// run by the current interpreter.
func (in *EVMInterpreter) CanRun(code []byte) bool {
return true
}
// IsReadOnly reports if the interpreter is in read only mode.
func (in *EVMInterpreter) IsReadOnly() bool {
return in.readOnly
}
// SetReadOnly sets (or unsets) read only mode in the interpreter.
func (in *EVMInterpreter) SetReadOnly(ro bool) {
in.readOnly = ro
}

2
core/vm/jump_table.go
View File

@ -24,7 +24,7 @@ import (
) )
type ( type (
executionFunc func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) executionFunc func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error)
gasFunc func(params.GasTable, *EVM, *Contract, *Stack, *Memory, uint64) (uint64, error) // last parameter is the requested memory size as a uint64 gasFunc func(params.GasTable, *EVM, *Contract, *Stack, *Memory, uint64) (uint64, error) // last parameter is the requested memory size as a uint64
stackValidationFunc func(*Stack) error stackValidationFunc func(*Stack) error
memorySizeFunc func(*Stack) *big.Int memorySizeFunc func(*Stack) *big.Int