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-rw-r--r--mist/debugger.go338
1 files changed, 338 insertions, 0 deletions
diff --git a/mist/debugger.go b/mist/debugger.go
new file mode 100644
index 000000000..a9086921d
--- /dev/null
+++ b/mist/debugger.go
@@ -0,0 +1,338 @@
+package main
+
+import (
+ "fmt"
+ "math/big"
+ "strconv"
+ "strings"
+ "unicode"
+
+ "github.com/ethereum/eth-go/ethchain"
+ "github.com/ethereum/eth-go/ethstate"
+ "github.com/ethereum/eth-go/ethutil"
+ "github.com/ethereum/eth-go/ethvm"
+ "github.com/ethereum/go-ethereum/utils"
+ "gopkg.in/qml.v1"
+)
+
+type DebuggerWindow struct {
+ win *qml.Window
+ engine *qml.Engine
+ lib *UiLib
+
+ vm *ethvm.Vm
+ Db *Debugger
+
+ state *ethstate.State
+}
+
+func NewDebuggerWindow(lib *UiLib) *DebuggerWindow {
+ engine := qml.NewEngine()
+ component, err := engine.LoadFile(lib.AssetPath("debugger/debugger.qml"))
+ if err != nil {
+ fmt.Println(err)
+
+ return nil
+ }
+
+ win := component.CreateWindow(nil)
+
+ w := &DebuggerWindow{engine: engine, win: win, lib: lib, vm: &ethvm.Vm{}}
+ w.Db = NewDebugger(w)
+
+ return w
+}
+
+func (self *DebuggerWindow) Show() {
+ context := self.engine.Context()
+ context.SetVar("dbg", self)
+
+ go func() {
+ self.win.Show()
+ self.win.Wait()
+ }()
+}
+
+func (self *DebuggerWindow) SetCode(code string) {
+ self.win.Set("codeText", code)
+}
+
+func (self *DebuggerWindow) SetData(data string) {
+ self.win.Set("dataText", data)
+}
+
+func (self *DebuggerWindow) SetAsm(data []byte) {
+ self.win.Root().Call("clearAsm")
+
+ dis := ethchain.Disassemble(data)
+ for _, str := range dis {
+ self.win.Root().Call("setAsm", str)
+ }
+}
+
+func (self *DebuggerWindow) Compile(code string) {
+ var err error
+ script := ethutil.StringToByteFunc(code, func(s string) (ret []byte) {
+ ret, err = ethutil.Compile(s, true)
+ return
+ })
+
+ if err == nil {
+ self.SetAsm(script)
+ }
+}
+
+// Used by QML
+func (self *DebuggerWindow) AutoComp(code string) {
+ if self.Db.done {
+ self.Compile(code)
+ }
+}
+
+func (self *DebuggerWindow) ClearLog() {
+ self.win.Root().Call("clearLog")
+}
+
+func (self *DebuggerWindow) Debug(valueStr, gasStr, gasPriceStr, scriptStr, dataStr string) {
+ if !self.Db.done {
+ self.Db.Q <- true
+ }
+
+ defer func() {
+ if r := recover(); r != nil {
+ self.Logf("compile FAULT: %v", r)
+ }
+ }()
+
+ data := utils.FormatTransactionData(dataStr)
+
+ var err error
+ script := ethutil.StringToByteFunc(scriptStr, func(s string) (ret []byte) {
+ ret, err = ethutil.Compile(s, false)
+ return
+ })
+
+ if err != nil {
+ self.Logln(err)
+
+ return
+ }
+
+ var (
+ gas = ethutil.Big(gasStr)
+ gasPrice = ethutil.Big(gasPriceStr)
+ value = ethutil.Big(valueStr)
+ // Contract addr as test address
+ keyPair = self.lib.eth.KeyManager().KeyPair()
+ )
+
+ state := self.lib.eth.StateManager().TransState()
+ account := self.lib.eth.StateManager().TransState().GetAccount(keyPair.Address())
+ contract := ethstate.NewStateObject([]byte{0})
+ contract.Balance = value
+
+ self.SetAsm(script)
+
+ block := self.lib.eth.BlockChain().CurrentBlock
+
+ callerClosure := ethvm.NewClosure(&ethstate.Message{}, account, contract, script, gas, gasPrice)
+ env := utils.NewEnv(state, block, account.Address(), value)
+ vm := ethvm.New(env)
+ vm.Verbose = true
+ vm.Dbg = self.Db
+
+ self.vm = vm
+ self.Db.done = false
+ self.Logf("callsize %d", len(script))
+ go func() {
+ ret, g, err := callerClosure.Call(vm, data)
+ tot := new(big.Int).Mul(g, gasPrice)
+ self.Logf("gas usage %v total price = %v (%v)", g, tot, ethutil.CurrencyToString(tot))
+ if err != nil {
+ self.Logln("exited with errors:", err)
+ } else {
+ if len(ret) > 0 {
+ self.Logf("exited: % x", ret)
+ } else {
+ self.Logf("exited: nil")
+ }
+ }
+
+ state.Reset()
+
+ if !self.Db.interrupt {
+ self.Db.done = true
+ } else {
+ self.Db.interrupt = false
+ }
+ }()
+}
+
+func (self *DebuggerWindow) Logf(format string, v ...interface{}) {
+ self.win.Root().Call("setLog", fmt.Sprintf(format, v...))
+}
+
+func (self *DebuggerWindow) Logln(v ...interface{}) {
+ str := fmt.Sprintln(v...)
+ self.Logf("%s", str[:len(str)-1])
+}
+
+func (self *DebuggerWindow) Next() {
+ self.Db.Next()
+}
+
+func (self *DebuggerWindow) Continue() {
+ self.vm.Stepping = false
+ self.Next()
+}
+
+func (self *DebuggerWindow) ExecCommand(command string) {
+ if len(command) > 0 {
+ cmd := strings.Split(command, " ")
+ switch cmd[0] {
+ case "help":
+ self.Logln("Debugger commands:")
+ self.Logln("break, bp Set breakpoint on instruction")
+ self.Logln("clear [log, break, bp] Clears previous set sub-command(s)")
+ case "break", "bp":
+ if len(cmd) > 1 {
+ lineNo, err := strconv.Atoi(cmd[1])
+ if err != nil {
+ self.Logln(err)
+ break
+ }
+ self.Db.breakPoints = append(self.Db.breakPoints, int64(lineNo))
+ self.Logf("break point set on instruction %d", lineNo)
+ } else {
+ self.Logf("'%s' requires line number", cmd[0])
+ }
+ case "clear":
+ if len(cmd) > 1 {
+ switch cmd[1] {
+ case "break", "bp":
+ self.Db.breakPoints = nil
+
+ self.Logln("Breakpoints cleared")
+ case "log":
+ self.ClearLog()
+ default:
+ self.Logf("clear '%s' is not valid", cmd[1])
+ }
+ } else {
+ self.Logln("'clear' requires sub command")
+ }
+
+ default:
+ self.Logf("Unknown command %s", cmd[0])
+ }
+ }
+}
+
+type Debugger struct {
+ N chan bool
+ Q chan bool
+ done, interrupt bool
+ breakPoints []int64
+ main *DebuggerWindow
+ win *qml.Window
+}
+
+func NewDebugger(main *DebuggerWindow) *Debugger {
+ db := &Debugger{make(chan bool), make(chan bool), true, false, nil, main, main.win}
+
+ return db
+}
+
+type storeVal struct {
+ Key, Value string
+}
+
+func (self *Debugger) BreakHook(pc int, op ethvm.OpCode, mem *ethvm.Memory, stack *ethvm.Stack, stateObject *ethstate.StateObject) bool {
+ self.main.Logln("break on instr:", pc)
+
+ return self.halting(pc, op, mem, stack, stateObject)
+}
+
+func (self *Debugger) StepHook(pc int, op ethvm.OpCode, mem *ethvm.Memory, stack *ethvm.Stack, stateObject *ethstate.StateObject) bool {
+ return self.halting(pc, op, mem, stack, stateObject)
+}
+
+func (self *Debugger) SetCode(byteCode []byte) {
+ self.main.SetAsm(byteCode)
+}
+
+func (self *Debugger) BreakPoints() []int64 {
+ return self.breakPoints
+}
+
+func (d *Debugger) halting(pc int, op ethvm.OpCode, mem *ethvm.Memory, stack *ethvm.Stack, stateObject *ethstate.StateObject) bool {
+ d.win.Root().Call("setInstruction", pc)
+ d.win.Root().Call("clearMem")
+ d.win.Root().Call("clearStack")
+ d.win.Root().Call("clearStorage")
+
+ addr := 0
+ for i := 0; i+32 <= mem.Len(); i += 16 {
+ dat := mem.Data()[i : i+16]
+ var str string
+
+ for _, d := range dat {
+ if unicode.IsGraphic(rune(d)) {
+ str += string(d)
+ } else {
+ str += "?"
+ }
+ }
+
+ d.win.Root().Call("setMem", memAddr{fmt.Sprintf("%03d", addr), fmt.Sprintf("%s % x", str, dat)})
+ addr += 16
+ }
+
+ for _, val := range stack.Data() {
+ d.win.Root().Call("setStack", val.String())
+ }
+
+ stateObject.EachStorage(func(key string, node *ethutil.Value) {
+ d.win.Root().Call("setStorage", storeVal{fmt.Sprintf("% x", key), fmt.Sprintf("% x", node.Str())})
+ })
+
+ stackFrameAt := new(big.Int).SetBytes(mem.Get(0, 32))
+ psize := mem.Len() - int(new(big.Int).SetBytes(mem.Get(0, 32)).Uint64())
+ d.win.Root().ObjectByName("stackFrame").Set("text", fmt.Sprintf(`<b>stack ptr</b>: %v`, stackFrameAt))
+ d.win.Root().ObjectByName("stackSize").Set("text", fmt.Sprintf(`<b>stack size</b>: %d`, psize))
+ d.win.Root().ObjectByName("memSize").Set("text", fmt.Sprintf(`<b>mem size</b>: %v`, mem.Len()))
+
+out:
+ for {
+ select {
+ case <-d.N:
+ break out
+ case <-d.Q:
+ d.interrupt = true
+ d.clearBuffers()
+
+ return false
+ }
+ }
+
+ return true
+}
+
+func (d *Debugger) clearBuffers() {
+out:
+ // drain
+ for {
+ select {
+ case <-d.N:
+ case <-d.Q:
+ default:
+ break out
+ }
+ }
+}
+
+func (d *Debugger) Next() {
+ if !d.done {
+ d.N <- true
+ }
+}