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added partial syscall mapping

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Imported from CityOfZion/neo-storm (26d10c72f6e3d298135ec3995eb2d821640c3b7c).
This commit is contained in:
Anthony De Meulemeester 2018-08-20 09:07:08 +02:00 committed by Roman Khimov
parent 33c512032f
commit 1927bc54d5
5 changed files with 83 additions and 34 deletions
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3
pkg/vm/compiler/analysis.go
View file

@ -6,7 +6,6 @@ import (
"go/types"
"log"
"github.com/CityOfZion/neo-go/pkg/vm"
"golang.org/x/tools/go/loader"
)
@ -203,7 +202,7 @@ func isByteArray(lit *ast.CompositeLit, tInfo *types.Info) bool {
}
func isSyscall(name string) bool {
_, ok := vm.Syscalls[name]
_, ok := syscalls[name]
return ok
}

2
pkg/vm/compiler/codegen.go
View file

@ -532,7 +532,7 @@ func (c *codegen) Visit(node ast.Node) ast.Visitor {
}
func (c *codegen) convertSyscall(name string) {
api, ok := vm.Syscalls[name]
api, ok := syscalls[name]
if !ok {
log.Fatalf("unknown VM syscall api: %s", name)
}

24
pkg/vm/compiler/emit.go
View file

@ -12,16 +12,16 @@ import (
"github.com/CityOfZion/neo-go/pkg/vm"
)
func emit(w *bytes.Buffer, op vm.Instruction, b []byte) error {
if err := w.WriteByte(byte(op)); err != nil {
func emit(w *bytes.Buffer, instr vm.Instruction, b []byte) error {
if err := w.WriteByte(byte(instr)); err != nil {
return err
}
_, err := w.Write(b)
return err
}
func emitOpcode(w io.ByteWriter, op vm.Instruction) error {
return w.WriteByte(byte(op))
func emitOpcode(w io.ByteWriter, instr vm.Instruction) error {
return w.WriteByte(byte(instr))
}
func emitBool(w io.ByteWriter, ok bool) error {
@ -89,21 +89,21 @@ func emitSyscall(w *bytes.Buffer, api string) error {
return emit(w, vm.SYSCALL, buf)
}
func emitCall(w *bytes.Buffer, op vm.Instruction, label int16) error {
return emitJmp(w, op, label)
func emitCall(w *bytes.Buffer, instr vm.Instruction, label int16) error {
return emitJmp(w, instr, label)
}
func emitJmp(w *bytes.Buffer, op vm.Instruction, label int16) error {
if !isInstructionJmp(op) {
return fmt.Errorf("opcode %s is not a jump or call type", op)
func emitJmp(w *bytes.Buffer, instr vm.Instruction, label int16) error {
if !isInstrJmp(instr) {
return fmt.Errorf("opcode %s is not a jump or call type", instr)
}
buf := make([]byte, 2)
binary.LittleEndian.PutUint16(buf, uint16(label))
return emit(w, op, buf)
return emit(w, instr, buf)
}
func isInstructionJmp(op vm.Instruction) bool {
if op == vm.JMP || op == vm.JMPIFNOT || op == vm.JMPIF || op == vm.CALL {
func isInstrJmp(instr vm.Instruction) bool {
if instr == vm.JMP || instr == vm.JMPIFNOT || instr == vm.JMPIF || instr == vm.CALL {
return true
}
return false

69
pkg/vm/compiler/syscall.go Normal file
View file

@ -0,0 +1,69 @@
package compiler
var syscalls = map[string]string{
//
// Standard library API
//
// Storage API
"GetContext": "System.Storage.GetContext",
"Put": "System.Storage.Put",
"Get": "System.Storage.Get",
"Delete": "System.Storage.Delete",
"Find": "System.Storage.Find",
// Runtime API
"GetTrigger": "System.Runtime.GetTrigger",
"CheckWitness": "System.Runtime.CheckWitness",
"Notify": "System.Runtime.Notify",
"Log": "System.Runtime.Log",
"GetTime": "System.Runtime.GetTime",
"Serialize": "System.Runtime.Serialize",
"Deserialize": "System.Runtime.Deserialize",
// Blockchain API
"GetHeight": "System.Blockchain.GetHeight",
"GetHeader": "System.Blockchain.GetHeader",
"GetBlock": "System.Blockchain.GetBlock",
"GetTransaction": "System.Blockchain.GetTransaction",
"GetTransactionHeight": "System.Blockchain.GetTransactionHeight",
"GetContract": "System.Blockchain.GetContract",
// Header API
"GetIndex": "System.Header.GetContract",
"GetHash": "System.Header.GetHash",
"GetPrevHash": "System.Header.GetPrevHash",
"GetTimestamp": "System.Header.GetTimestamp",
// Block API
"GetTransactionCount": "System.Block.GetTransactionCount",
"GetTransactions": "System.Block.GetTransactions",
// TODO: Find solution for duplicated map entry
"NGetTransaction": "System.Block.GetTransaction",
//
// NEO specific API
//
// Blockchain API
"GetAccount": "Neo.Blockchain.GetAccount",
"GetValidators": "Neo.Blockchain.GetValidators",
"GetAsset": "Neo.Blockchain.GetAsset",
// Header API
"GetVersion": "Neo.Header.GetVersion",
"GetMerkleRoot": "Neo.Header.GetMerkleRoot",
"GetConsensusData": "Neo.Header.GetConsensusData",
"GetNextConsensus": "Neo.Header.GetNextConsensus",
// Transaction API
"GetType": "Neo.Transaction.GetType",
"GetAttributes": "Neo.Transaction.GetAttributes",
"GetInputs": "Neo.Transaction.GetInputs",
"GetOutputs": "Neo.Transaction.GetOutputs",
"GetReferences": "Neo.Transaction.GetReferences",
"GetUnspentCoins": "Neo.Transaction.GetUnspentCoins",
"GetScript": "Neo.InvocationTransaction.GetScript",
// TODO: Add the rest of the interop APIS
}

19
pkg/vm/syscall.go
View file

@ -1,19 +0,0 @@
package vm
// Syscalls are a mapping between the syscall function name
// and the registered VM interop API.
var Syscalls = map[string]string{
// Storage API
"GetContext": "Neo.Storage.GetContext",
"Put": "Neo.Storage.Put",
"Get": "Neo.Storage.Get",
"Delete": "Neo.Storage.Delete",
// Runtime API
"GetTrigger": "Neo.Runtime.GetTrigger",
"CheckWitness": "Neo.Runtime.CheckWitness",
"GetCurrentBlock": "Neo.Runtime.GetCurrentBlock",
"GetTime": "Neo.Runtime.GetTime",
"Notify": "Neo.Runtime.Notify",
"Log": "Neo.Runtime.Log",
}