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Merge pull request #2148 from nspcc-dev/microopt-vm

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Another round of VM microoptimizations
This commit is contained in:
Roman Khimov 2021-08-31 13:01:43 +03:00 committed by GitHub
commit 296734d367
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GPG key ID: 4AEE18F83AFDEB23
11 changed files with 133 additions and 112 deletions
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4
pkg/core/interop/contract/call.go
View file

@ -70,7 +70,7 @@ func Call(ic *interop.Context) error {
}
hasReturn := md.ReturnType != smartcontract.VoidType
if !hasReturn {
ic.VM.Estack().PushVal(stackitem.Null{})
ic.VM.Estack().PushItem(stackitem.Null{})
}
return callInternal(ic, cs, method, fs, hasReturn, args)
}
@ -116,7 +116,7 @@ func callExFromNative(ic *interop.Context, caller util.Uint160, cs *state.Contra
ic.VM.LoadScriptWithCallingHash(caller, cs.NEF.Script, cs.Hash, ic.VM.Context().GetCallFlags()&f, hasReturn, uint16(len(args)))
ic.VM.Context().NEF = &cs.NEF
for i := len(args) - 1; i >= 0; i-- {
ic.VM.Estack().PushVal(args[i])
ic.VM.Estack().PushItem(args[i])
}
// use Jump not Call here because context was loaded in LoadScript above.
ic.VM.Jump(ic.VM.Context(), md.Offset)

5
pkg/core/interop/crypto/ecdsa.go
View file

@ -10,6 +10,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
// ECDSASecp256r1CheckMultisig checks multiple ECDSA signatures at once using
@ -32,7 +33,7 @@ func ECDSASecp256r1CheckMultisig(ic *interop.Context) error {
return errors.New("more signatures than there are keys")
}
sigok := vm.CheckMultisigPar(ic.VM, elliptic.P256(), hash.NetSha256(ic.Network, ic.Container).BytesBE(), pkeys, sigs)
ic.VM.Estack().PushVal(sigok)
ic.VM.Estack().PushItem(stackitem.Bool(sigok))
return nil
}
@ -45,6 +46,6 @@ func ECDSASecp256r1CheckSig(ic *interop.Context) error {
return err
}
res := pkey.VerifyHashable(signature, ic.Network, ic.Container)
ic.VM.Estack().PushVal(res)
ic.VM.Estack().PushItem(stackitem.Bool(res))
return nil
}

4
pkg/core/interop/iterator/interop.go
View file

@ -14,7 +14,7 @@ type iterator interface {
func Next(ic *interop.Context) error {
iop := ic.VM.Estack().Pop().Interop()
arr := iop.Value().(iterator)
ic.VM.Estack().PushVal(arr.Next())
ic.VM.Estack().PushItem(stackitem.Bool(arr.Next()))
return nil
}
@ -25,7 +25,7 @@ func Next(ic *interop.Context) error {
func Value(ic *interop.Context) error {
iop := ic.VM.Estack().Pop().Interop()
arr := iop.Value().(iterator)
ic.VM.Estack().PushVal(arr.Value())
ic.VM.Estack().PushItem(arr.Value())
return nil
}

9
pkg/core/interop/runtime/engine.go
View file

@ -3,6 +3,7 @@ package runtime
import (
"errors"
"fmt"
"math/big"
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/core/state"
@ -28,7 +29,7 @@ func GetExecutingScriptHash(ic *interop.Context) error {
// one native to another, no operations are performed on invocation stack.
func GetCallingScriptHash(ic *interop.Context) error {
h := ic.VM.GetCallingScriptHash()
ic.VM.Estack().PushVal(h.BytesBE())
ic.VM.Estack().PushItem(stackitem.NewByteArray(h.BytesBE()))
return nil
}
@ -39,13 +40,13 @@ func GetEntryScriptHash(ic *interop.Context) error {
// Platform returns the name of the platform.
func Platform(ic *interop.Context) error {
ic.VM.Estack().PushVal([]byte("NEO"))
ic.VM.Estack().PushItem(stackitem.NewByteArray([]byte("NEO")))
return nil
}
// GetTrigger returns the script trigger.
func GetTrigger(ic *interop.Context) error {
ic.VM.Estack().PushVal(byte(ic.Trigger))
ic.VM.Estack().PushItem(stackitem.NewBigInteger(big.NewInt(int64(ic.Trigger))))
return nil
}
@ -97,7 +98,7 @@ func Log(ic *interop.Context) error {
// GetTime returns timestamp of the block being verified, or the latest
// one in the blockchain if no block is given to Context.
func GetTime(ic *interop.Context) error {
ic.VM.Estack().PushVal(ic.Block.Timestamp)
ic.VM.Estack().PushItem(stackitem.NewBigInteger(new(big.Int).SetUint64(ic.Block.Timestamp)))
return nil
}

13
pkg/core/interop/runtime/util.go
View file

@ -3,6 +3,7 @@ package runtime
import (
"encoding/binary"
"errors"
"math/big"
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/core/state"
@ -16,9 +17,9 @@ import (
// GasLeft returns remaining amount of GAS.
func GasLeft(ic *interop.Context) error {
if ic.VM.GasLimit == -1 {
ic.VM.Estack().PushVal(ic.VM.GasLimit)
ic.VM.Estack().PushItem(stackitem.NewBigInteger(big.NewInt(ic.VM.GasLimit)))
} else {
ic.VM.Estack().PushVal(ic.VM.GasLimit - ic.VM.GasConsumed())
ic.VM.Estack().PushItem(stackitem.NewBigInteger(big.NewInt(ic.VM.GasLimit - ic.VM.GasConsumed())))
}
return nil
}
@ -55,7 +56,7 @@ func GetNotifications(ic *interop.Context) error {
})
arr.Append(ev)
}
ic.VM.Estack().PushVal(arr)
ic.VM.Estack().PushItem(arr)
return nil
}
@ -67,21 +68,21 @@ func GetInvocationCounter(ic *interop.Context) error {
count = 1
ic.VM.Invocations[currentScriptHash] = count
}
ic.VM.Estack().PushVal(count)
ic.VM.Estack().PushItem(stackitem.NewBigInteger(big.NewInt(int64(count))))
return nil
}
// GetNetwork returns chain network number.
func GetNetwork(ic *interop.Context) error {
m := ic.Chain.GetConfig().Magic
ic.VM.Estack().PushVal(uint32(m))
ic.VM.Estack().PushItem(stackitem.NewBigInteger(big.NewInt(int64(m))))
return nil
}
// GetRandom returns pseudo-random number which depends on block nonce and transaction hash.
func GetRandom(ic *interop.Context) error {
res := murmur128(ic.NonceData[:], ic.Network)
ic.VM.Estack().PushVal(bigint.FromBytesUnsigned(res))
ic.VM.Estack().PushItem(stackitem.NewBigInteger(bigint.FromBytesUnsigned(res)))
copy(ic.NonceData[:], res)
return nil
}

3
pkg/core/interop/runtime/witness.go
View file

@ -11,6 +11,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
// CheckHashedWitness checks given hash against current list of script hashes
@ -97,6 +98,6 @@ func CheckWitness(ic *interop.Context) error {
if err != nil {
return fmt.Errorf("failed to check witness: %w", err)
}
ic.VM.Estack().PushVal(res)
ic.VM.Estack().PushItem(stackitem.Bool(res))
return nil
}

19
pkg/core/interop_system.go
View file

@ -6,6 +6,7 @@ import (
"errors"
"fmt"
"math"
"math/big"
"sort"
"github.com/nspcc-dev/neo-go/pkg/core/block"
@ -44,7 +45,7 @@ func engineGetScriptContainer(ic *interop.Context) error {
default:
return errors.New("unknown script container")
}
ic.VM.Estack().PushVal(item)
ic.VM.Estack().PushItem(item)
return nil
}
@ -72,9 +73,9 @@ func storageGet(ic *interop.Context) error {
key := ic.VM.Estack().Pop().Bytes()
si := ic.DAO.GetStorageItem(stc.ID, key)
if si != nil {
ic.VM.Estack().PushVal([]byte(si))
ic.VM.Estack().PushItem(stackitem.NewByteArray([]byte(si)))
} else {
ic.VM.Estack().PushVal(stackitem.Null{})
ic.VM.Estack().PushItem(stackitem.Null{})
}
return nil
}
@ -100,7 +101,7 @@ func storageGetContextInternal(ic *interop.Context, isReadOnly bool) error {
ID: contract.ID,
ReadOnly: isReadOnly,
}
ic.VM.Estack().PushVal(stackitem.NewInterop(sc))
ic.VM.Estack().PushItem(stackitem.NewInterop(sc))
return nil
}
@ -157,7 +158,7 @@ func storageContextAsReadOnly(ic *interop.Context) error {
}
stc = stx
}
ic.VM.Estack().PushVal(stackitem.NewInterop(stc))
ic.VM.Estack().PushItem(stackitem.NewInterop(stc))
return nil
}
@ -210,7 +211,7 @@ func storageFind(ic *interop.Context) error {
filteredMap := stackitem.NewMapWithValue(arr)
item := istorage.NewIterator(filteredMap, len(prefix), opts)
ic.VM.Estack().PushVal(stackitem.NewInterop(item))
ic.VM.Estack().PushItem(stackitem.NewInterop(item))
return nil
}
@ -236,7 +237,7 @@ func contractCreateMultisigAccount(ic *interop.Context) error {
if err != nil {
return err
}
ic.VM.Estack().PushVal(hash.Hash160(script).BytesBE())
ic.VM.Estack().PushItem(stackitem.NewByteArray(hash.Hash160(script).BytesBE()))
return nil
}
@ -247,12 +248,12 @@ func contractCreateStandardAccount(ic *interop.Context) error {
if err != nil {
return err
}
ic.VM.Estack().PushVal(p.GetScriptHash().BytesBE())
ic.VM.Estack().PushItem(stackitem.NewByteArray(p.GetScriptHash().BytesBE()))
return nil
}
// contractGetCallFlags returns current context calling flags.
func contractGetCallFlags(ic *interop.Context) error {
ic.VM.Estack().PushVal(ic.VM.Context().GetCallFlags())
ic.VM.Estack().PushItem(stackitem.NewBigInteger(big.NewInt(int64(ic.VM.Context().GetCallFlags()))))
return nil
}

2
pkg/core/native/interop.go
View file

@ -53,7 +53,7 @@ func Call(ic *interop.Context) error {
}
result := m.Func(ic, args)
if m.MD.ReturnType != smartcontract.VoidType {
ctx.Estack().PushVal(result)
ctx.Estack().PushItem(result)
}
return nil
}

14
pkg/vm/context.go
View file

@ -79,11 +79,10 @@ func NewContext(b []byte) *Context {
// return value count and initial position in script.
func NewContextWithParams(b []byte, pcount int, rvcount int, pos int) *Context {
return &Context{
prog: b,
breakPoints: []int{},
ParamCount: pcount,
RetCount: rvcount,
nextip: pos,
prog: b,
ParamCount: pcount,
RetCount: rvcount,
nextip: pos,
}
}
@ -287,8 +286,7 @@ func (v *VM) getContextScriptHash(n int) util.Uint160 {
return util.Uint160{}
}
element := istack.Peek(n)
ctxIface := element.Value()
ctx := ctxIface.(*Context)
ctx := element.value.(*Context)
return ctx.ScriptHash()
}
@ -296,6 +294,6 @@ func (v *VM) getContextScriptHash(n int) util.Uint160 {
// invocation stack element number n.
func (v *VM) PushContextScriptHash(n int) error {
h := v.getContextScriptHash(n)
v.Estack().PushVal(h.BytesBE())
v.Estack().PushItem(stackitem.NewByteArray(h.BytesBE()))
return nil
}

5
pkg/vm/stack.go
View file

@ -170,6 +170,11 @@ func (s *Stack) Push(e Element) {
s.refs.Add(e.value)
}
// PushItem pushed an Item to the stack.
func (s *Stack) PushItem(i stackitem.Item) {
s.Push(Element{i})
}
// PushVal pushes the given value on the stack. It will infer the
// underlying Item to its corresponding type.
func (s *Stack) PushVal(v interface{}) {

167
pkg/vm/vm.go
View file

@ -286,7 +286,7 @@ func (v *VM) LoadScriptWithFlags(b []byte, f callflag.CallFlag) {
ctx.callFlag = f
ctx.static = newSlot(&v.refs)
ctx.callingScriptHash = v.GetCurrentScriptHash()
v.istack.PushVal(ctx)
v.istack.PushItem(ctx)
}
// LoadScriptWithHash if similar to the LoadScriptWithFlags method, but it also loads
@ -322,7 +322,7 @@ func (v *VM) Context() *Context {
if v.istack.Len() == 0 {
return nil
}
return v.istack.Peek(0).Value().(*Context)
return v.istack.Peek(0).value.(*Context)
}
// PopResult is used to pop the first item of the evaluation stack. This allows
@ -360,6 +360,8 @@ func (v *VM) Ready() bool {
// Run starts the execution of the loaded program.
func (v *VM) Run() error {
var ctx *Context
if !v.Ready() {
v.state = FaultState
return errors.New("no program loaded")
@ -372,6 +374,7 @@ func (v *VM) Run() error {
}
// HaltState (the default) or BreakState are safe to continue.
v.state = NoneState
ctx = v.Context()
for {
switch {
case v.state.HasFlag(FaultState):
@ -382,7 +385,7 @@ func (v *VM) Run() error {
// Normal exit from this loop.
return nil
case v.state == NoneState:
if err := v.Step(); err != nil {
if err := v.step(ctx); err != nil {
return err
}
default:
@ -390,7 +393,7 @@ func (v *VM) Run() error {
return errors.New("unknown state")
}
// check for breakpoint before executing the next instruction
ctx := v.Context()
ctx = v.Context()
if ctx != nil && ctx.atBreakPoint() {
v.state = BreakState
}
@ -400,6 +403,11 @@ func (v *VM) Run() error {
// Step 1 instruction in the program.
func (v *VM) Step() error {
ctx := v.Context()
return v.step(ctx)
}
// step executes one instruction in given context.
func (v *VM) step(ctx *Context) error {
op, param, err := ctx.Next()
if err != nil {
v.state = FaultState
@ -532,7 +540,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
}
if op <= opcode.PUSHINT256 {
v.estack.PushVal(bigint.FromBytes(parameter))
v.estack.PushItem(stackitem.NewBigInteger(bigint.FromBytes(parameter)))
return
}
@ -543,26 +551,26 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
opcode.PUSH12, opcode.PUSH13, opcode.PUSH14, opcode.PUSH15,
opcode.PUSH16:
val := int(op) - int(opcode.PUSH0)
v.estack.PushVal(val)
v.estack.PushItem(stackitem.NewBigInteger(big.NewInt(int64(val))))
case opcode.PUSHDATA1, opcode.PUSHDATA2, opcode.PUSHDATA4:
v.estack.PushVal(parameter)
v.estack.PushItem(stackitem.NewByteArray(parameter))
case opcode.PUSHA:
n := getJumpOffset(ctx, parameter)
ptr := stackitem.NewPointerWithHash(n, ctx.prog, ctx.ScriptHash())
v.estack.PushVal(ptr)
v.estack.PushItem(ptr)
case opcode.PUSHNULL:
v.estack.PushVal(stackitem.Null{})
v.estack.PushItem(stackitem.Null{})
case opcode.ISNULL:
_, ok := v.estack.Pop().value.(stackitem.Null)
v.estack.PushVal(ok)
v.estack.PushItem(stackitem.Bool(ok))
case opcode.ISTYPE:
res := v.estack.Pop().Item()
v.estack.PushVal(res.Type() == stackitem.Type(parameter[0]))
v.estack.PushItem(stackitem.Bool(res.Type() == stackitem.Type(parameter[0])))
case opcode.CONVERT:
typ := stackitem.Type(parameter[0])
@ -571,7 +579,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
if err != nil {
panic(err)
}
v.estack.PushVal(result)
v.estack.PushItem(result)
case opcode.INITSSLOT:
if parameter[0] == 0 {
@ -599,11 +607,11 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
case opcode.LDSFLD0, opcode.LDSFLD1, opcode.LDSFLD2, opcode.LDSFLD3, opcode.LDSFLD4, opcode.LDSFLD5, opcode.LDSFLD6:
item := ctx.static.Get(int(op - opcode.LDSFLD0))
v.estack.PushVal(item)
v.estack.PushItem(item)
case opcode.LDSFLD:
item := ctx.static.Get(int(parameter[0]))
v.estack.PushVal(item)
v.estack.PushItem(item)
case opcode.STSFLD0, opcode.STSFLD1, opcode.STSFLD2, opcode.STSFLD3, opcode.STSFLD4, opcode.STSFLD5, opcode.STSFLD6:
item := v.estack.Pop().Item()
@ -615,11 +623,11 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
case opcode.LDLOC0, opcode.LDLOC1, opcode.LDLOC2, opcode.LDLOC3, opcode.LDLOC4, opcode.LDLOC5, opcode.LDLOC6:
item := ctx.local.Get(int(op - opcode.LDLOC0))
v.estack.PushVal(item)
v.estack.PushItem(item)
case opcode.LDLOC:
item := ctx.local.Get(int(parameter[0]))
v.estack.PushVal(item)
v.estack.PushItem(item)
case opcode.STLOC0, opcode.STLOC1, opcode.STLOC2, opcode.STLOC3, opcode.STLOC4, opcode.STLOC5, opcode.STLOC6:
item := v.estack.Pop().Item()
@ -631,11 +639,11 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
case opcode.LDARG0, opcode.LDARG1, opcode.LDARG2, opcode.LDARG3, opcode.LDARG4, opcode.LDARG5, opcode.LDARG6:
item := ctx.arguments.Get(int(op - opcode.LDARG0))
v.estack.PushVal(item)
v.estack.PushItem(item)
case opcode.LDARG:
item := ctx.arguments.Get(int(parameter[0]))
v.estack.PushVal(item)
v.estack.PushItem(item)
case opcode.STARG0, opcode.STARG1, opcode.STARG2, opcode.STARG3, opcode.STARG4, opcode.STARG5, opcode.STARG6:
item := v.estack.Pop().Item()
@ -650,7 +658,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
if n < 0 || n > stackitem.MaxSize {
panic("invalid size")
}
v.estack.PushVal(stackitem.NewBuffer(make([]byte, n)))
v.estack.PushItem(stackitem.NewBuffer(make([]byte, n)))
case opcode.MEMCPY:
n := toInt(v.estack.Pop().BigInt())
@ -685,7 +693,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
ab := make([]byte, l)
copy(ab, a)
copy(ab[len(a):], b)
v.estack.PushVal(stackitem.NewBuffer(ab))
v.estack.PushItem(stackitem.NewBuffer(ab))
case opcode.SUBSTR:
l := int(v.estack.Pop().BigInt().Int64())
@ -703,7 +711,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
}
res := make([]byte, l)
copy(res, s[o:last])
v.estack.PushVal(stackitem.NewBuffer(res))
v.estack.PushItem(stackitem.NewBuffer(res))
case opcode.LEFT:
l := int(v.estack.Pop().BigInt().Int64())
@ -716,7 +724,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
}
res := make([]byte, l)
copy(res, s[:l])
v.estack.PushVal(stackitem.NewBuffer(res))
v.estack.PushItem(stackitem.NewBuffer(res))
case opcode.RIGHT:
l := int(v.estack.Pop().BigInt().Int64())
@ -726,10 +734,10 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
s := v.estack.Pop().Bytes()
res := make([]byte, l)
copy(res, s[len(s)-l:])
v.estack.PushVal(stackitem.NewBuffer(res))
v.estack.PushItem(stackitem.NewBuffer(res))
case opcode.DEPTH:
v.estack.PushVal(v.estack.Len())
v.estack.PushItem(stackitem.NewBigInteger(big.NewInt(int64(v.estack.Len()))))
case opcode.DROP:
if v.estack.Len() < 1 {
@ -818,22 +826,22 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
// Bit operations.
case opcode.INVERT:
i := v.estack.Pop().BigInt()
v.estack.PushVal(new(big.Int).Not(i))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).Not(i)))
case opcode.AND:
b := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
v.estack.PushVal(new(big.Int).And(b, a))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).And(b, a)))
case opcode.OR:
b := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
v.estack.PushVal(new(big.Int).Or(b, a))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).Or(b, a)))
case opcode.XOR:
b := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
v.estack.PushVal(new(big.Int).Xor(b, a))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).Xor(b, a)))
case opcode.EQUAL, opcode.NOTEQUAL:
if v.estack.Len() < 2 {
@ -841,63 +849,64 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
}
b := v.estack.Pop()
a := v.estack.Pop()
v.estack.PushVal(a.value.Equals(b.value) == (op == opcode.EQUAL))
res := stackitem.Bool(a.value.Equals(b.value) == (op == opcode.EQUAL))
v.estack.PushItem(res)
// Numeric operations.
case opcode.SIGN:
x := v.estack.Pop().BigInt()
v.estack.PushVal(x.Sign())
v.estack.PushItem(stackitem.NewBigInteger(big.NewInt(int64(x.Sign()))))
case opcode.ABS:
x := v.estack.Pop().BigInt()
v.estack.PushVal(new(big.Int).Abs(x))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).Abs(x)))
case opcode.NEGATE:
x := v.estack.Pop().BigInt()
v.estack.PushVal(new(big.Int).Neg(x))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).Neg(x)))
case opcode.INC:
x := v.estack.Pop().BigInt()
a := new(big.Int).Add(x, big.NewInt(1))
v.estack.PushVal(a)
v.estack.PushItem(stackitem.NewBigInteger(a))
case opcode.DEC:
x := v.estack.Pop().BigInt()
a := new(big.Int).Sub(x, big.NewInt(1))
v.estack.PushVal(a)
v.estack.PushItem(stackitem.NewBigInteger(a))
case opcode.ADD:
a := v.estack.Pop().BigInt()
b := v.estack.Pop().BigInt()
c := new(big.Int).Add(a, b)
v.estack.PushVal(c)
v.estack.PushItem(stackitem.NewBigInteger(c))
case opcode.SUB:
b := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
c := new(big.Int).Sub(a, b)
v.estack.PushVal(c)
v.estack.PushItem(stackitem.NewBigInteger(c))
case opcode.MUL:
a := v.estack.Pop().BigInt()
b := v.estack.Pop().BigInt()
c := new(big.Int).Mul(a, b)
v.estack.PushVal(c)
v.estack.PushItem(stackitem.NewBigInteger(c))
case opcode.DIV:
b := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
v.estack.PushVal(new(big.Int).Quo(a, b))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).Quo(a, b)))
case opcode.MOD:
b := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
v.estack.PushVal(new(big.Int).Rem(a, b))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).Rem(a, b)))
case opcode.POW:
exp := v.estack.Pop().BigInt()
@ -905,7 +914,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
if ei := exp.Uint64(); !exp.IsUint64() || ei > maxSHLArg {
panic("invalid exponent")
}
v.estack.PushVal(new(big.Int).Exp(a, exp, nil))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).Exp(a, exp, nil)))
case opcode.SQRT:
a := v.estack.Pop().BigInt()
@ -913,7 +922,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
panic("negative value")
}
v.estack.PushVal(new(big.Int).Sqrt(a))
v.estack.PushItem(stackitem.NewBigInteger(new(big.Int).Sqrt(a)))
case opcode.SHL, opcode.SHR:
b := v.estack.Pop().BigInt().Int64()
@ -931,35 +940,35 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
item.Rsh(a, uint(b))
}
v.estack.PushVal(&item)
v.estack.PushItem(stackitem.NewBigInteger(&item))
case opcode.NOT:
x := v.estack.Pop().Bool()
v.estack.PushVal(!x)
v.estack.PushItem(stackitem.Bool(!x))
case opcode.BOOLAND:
b := v.estack.Pop().Bool()
a := v.estack.Pop().Bool()
v.estack.PushVal(a && b)
v.estack.PushItem(stackitem.Bool(a && b))
case opcode.BOOLOR:
b := v.estack.Pop().Bool()
a := v.estack.Pop().Bool()
v.estack.PushVal(a || b)
v.estack.PushItem(stackitem.Bool(a || b))
case opcode.NZ:
x := v.estack.Pop().BigInt()
v.estack.PushVal(x.Sign() != 0)
v.estack.PushItem(stackitem.Bool(x.Sign() != 0))
case opcode.NUMEQUAL:
b := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
v.estack.PushVal(a.Cmp(b) == 0)
v.estack.PushItem(stackitem.Bool(a.Cmp(b) == 0))
case opcode.NUMNOTEQUAL:
b := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
v.estack.PushVal(a.Cmp(b) != 0)
v.estack.PushItem(stackitem.Bool(a.Cmp(b) != 0))
case opcode.LT, opcode.LE, opcode.GT, opcode.GE:
eb := v.estack.Pop()
@ -981,7 +990,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
res = cmp >= 0
}
}
v.estack.PushVal(res)
v.estack.PushItem(stackitem.Bool(res))
case opcode.MIN:
b := v.estack.Pop().BigInt()
@ -990,7 +999,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
if a.Cmp(b) == 1 {
val = b
}
v.estack.PushVal(val)
v.estack.PushItem(stackitem.NewBigInteger(val))
case opcode.MAX:
b := v.estack.Pop().BigInt()
@ -999,17 +1008,17 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
if a.Cmp(b) == -1 {
val = b
}
v.estack.PushVal(val)
v.estack.PushItem(stackitem.NewBigInteger(val))
case opcode.WITHIN:
b := v.estack.Pop().BigInt()
a := v.estack.Pop().BigInt()
x := v.estack.Pop().BigInt()
v.estack.PushVal(a.Cmp(x) <= 0 && x.Cmp(b) == -1)
v.estack.PushItem(stackitem.Bool(a.Cmp(x) <= 0 && x.Cmp(b) == -1))
// Object operations
case opcode.NEWARRAY0:
v.estack.PushVal(stackitem.NewArray([]stackitem.Item{}))
v.estack.PushItem(stackitem.NewArray([]stackitem.Item{}))
case opcode.NEWARRAY, opcode.NEWARRAYT, opcode.NEWSTRUCT:
n := toInt(v.estack.Pop().BigInt())
@ -1027,10 +1036,10 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
} else {
res = stackitem.NewArray(items)
}
v.estack.PushVal(res)
v.estack.PushItem(res)
case opcode.NEWSTRUCT0:
v.estack.PushVal(stackitem.NewStruct([]stackitem.Item{}))
v.estack.PushItem(stackitem.NewStruct([]stackitem.Item{}))
case opcode.APPEND:
itemElem := v.estack.Pop()
@ -1060,15 +1069,15 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
items[i] = v.estack.Pop().value
}
v.estack.PushVal(items)
v.estack.PushItem(stackitem.NewArray(items))
case opcode.UNPACK:
a := v.estack.Pop().Array()
l := len(a)
for i := l - 1; i >= 0; i-- {
v.estack.PushVal(a[i])
v.estack.PushItem(a[i])
}
v.estack.PushVal(l)
v.estack.PushItem(stackitem.NewBigInteger(big.NewInt(int64(l))))
case opcode.PICKITEM:
key := v.estack.Pop()
@ -1085,20 +1094,20 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
panic("PICKITEM: invalid index")
}
item := arr[index].Dup()
v.estack.PushVal(item)
v.estack.PushItem(item)
case *stackitem.Map:
index := t.Index(key.Item())
if index < 0 {
panic("invalid key")
}
v.estack.Push(Element{value: t.Value().([]stackitem.MapElement)[index].Value.Dup()})
v.estack.PushItem(t.Value().([]stackitem.MapElement)[index].Value.Dup())
default:
arr := obj.Bytes()
if index < 0 || index >= len(arr) {
panic("PICKITEM: invalid index")
}
item := arr[index]
v.estack.PushVal(int(item))
v.estack.PushItem(stackitem.NewBigInteger(big.NewInt(int64(item))))
}
case opcode.SETITEM:
@ -1223,20 +1232,22 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
item.Remove(index)
}
v.refs.Remove(elem)
v.estack.PushVal(elem)
v.estack.PushItem(elem)
case opcode.SIZE:
elem := v.estack.Pop()
var res int
// Cause there is no native (byte) item type here, hence we need to check
// the type of the item for array size operations.
switch t := elem.Value().(type) {
case []stackitem.Item:
v.estack.PushVal(len(t))
res = len(t)
case []stackitem.MapElement:
v.estack.PushVal(len(t))
res = len(t)
default:
v.estack.PushVal(len(elem.Bytes()))
res = len(elem.Bytes())
}
v.estack.PushItem(stackitem.NewBigInteger(big.NewInt(int64(res))))
case opcode.JMP, opcode.JMPL, opcode.JMPIF, opcode.JMPIFL, opcode.JMPIFNOT, opcode.JMPIFNOTL,
opcode.JMPEQ, opcode.JMPEQL, opcode.JMPNE, opcode.JMPNEL,
@ -1285,7 +1296,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
}
case opcode.RET:
oldCtx := v.istack.Pop().Value().(*Context)
oldCtx := v.istack.Pop().value.(*Context)
oldEstack := v.estack
v.unloadContext(oldCtx)
@ -1309,7 +1320,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
}
case opcode.NEWMAP:
v.estack.Push(Element{value: stackitem.NewMap()})
v.estack.PushItem(stackitem.NewMap())
case opcode.KEYS:
if v.estack.Len() == 0 {
@ -1326,7 +1337,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
for k := range m.Value().([]stackitem.MapElement) {
arr = append(arr, m.Value().([]stackitem.MapElement)[k].Key.Dup())
}
v.estack.PushVal(arr)
v.estack.PushItem(stackitem.NewArray(arr))
case opcode.VALUES:
if v.estack.Len() == 0 {
@ -1351,7 +1362,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
panic("not a Map, Array or Struct")
}
v.estack.PushVal(arr)
v.estack.PushItem(stackitem.NewArray(arr))
case opcode.HASKEY:
if v.estack.Len() < 2 {
@ -1361,24 +1372,26 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
validateMapKey(key)
c := v.estack.Pop()
var res bool
switch t := c.value.(type) {
case *stackitem.Array, *stackitem.Struct:
index := key.BigInt().Int64()
if index < 0 {
panic("negative index")
}
v.estack.PushVal(index < int64(len(c.Array())))
res = index < int64(len(c.Array()))
case *stackitem.Map:
v.estack.PushVal(t.Has(key.Item()))
res = t.Has(key.Item())
case *stackitem.Buffer:
index := key.BigInt().Int64()
if index < 0 {
panic("negative index")
}
v.estack.PushVal(index < int64(t.Len()))
res = index < int64(t.Len())
default:
panic("wrong collection type")
}
v.estack.PushItem(stackitem.Bool(res))
case opcode.NOP:
// unlucky ^^
@ -1409,7 +1422,7 @@ func (v *VM) execute(ctx *Context, op opcode.Opcode, parameter []byte) (err erro
fOffset = -1
}
eCtx := newExceptionHandlingContext(cOffset, fOffset)
ctx.tryStack.PushVal(eCtx)
ctx.tryStack.PushItem(eCtx)
case opcode.ENDTRY, opcode.ENDTRYL:
eCtx := ctx.tryStack.Peek(0).Value().(*exceptionHandlingContext)
@ -1512,7 +1525,7 @@ func (v *VM) call(ctx *Context, offset int) {
newCtx.arguments = nil
initStack(&newCtx.tryStack, "exception", nil)
newCtx.NEF = ctx.NEF
v.istack.PushVal(newCtx)
v.istack.PushItem(newCtx)
v.Jump(newCtx, offset)
}
@ -1552,7 +1565,7 @@ func calcJumpOffset(ctx *Context, parameter []byte) (int, int, error) {
func (v *VM) handleException() {
for pop := 0; pop < v.istack.Len(); pop++ {
ictxv := v.istack.Peek(pop)
ictx := ictxv.Value().(*Context)
ictx := ictxv.value.(*Context)
for j := 0; j < ictx.tryStack.Len(); j++ {
e := ictx.tryStack.Peek(j)
ectx := e.Value().(*exceptionHandlingContext)
@ -1562,12 +1575,12 @@ func (v *VM) handleException() {
continue
}
for i := 0; i < pop; i++ {
ctx := v.istack.Pop().Value().(*Context)
ctx := v.istack.Pop().value.(*Context)
v.unloadContext(ctx)
}
if ectx.State == eTry && ectx.HasCatch() {
ectx.State = eCatch
v.estack.PushVal(v.uncaughtException)
v.estack.PushItem(v.uncaughtException)
v.uncaughtException = nil
v.Jump(ictx, ectx.CatchOffset)
} else {