зеркало из https://github.com/mozilla/pluotsorbet.git
1205 строки
38 KiB
TypeScript
1205 строки
38 KiB
TypeScript
module J2ME {
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declare var util;
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declare var Instrument;
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declare var Promise;
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import BytecodeStream = Bytecode.BytecodeStream;
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import checkArrayBounds = J2ME.checkArrayBounds;
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import checkDivideByZero = J2ME.checkDivideByZero;
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import checkDivideByZeroLong = J2ME.checkDivideByZeroLong;
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import Bytecodes = Bytecode.Bytecodes;
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import assert = Debug.assert;
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import popManyInto = ArrayUtilities.popManyInto;
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export var interpreterCounter = new Metrics.Counter(true);
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var traceArrayAccess = false;
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function traceArrayStore(index: number, array: any [], value: any) {
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traceWriter.writeLn(toDebugString(array) + "[" + index + "] = " + toDebugString(value));
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}
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function traceArrayLoad(index: number, array: any []) {
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assert(array[index] !== undefined);
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traceWriter.writeLn(toDebugString(array) + "[" + index + "] (" + toDebugString(array[index]) + ")");
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}
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/**
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* Optimize method bytecode.
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*/
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function optimizeMethodBytecode(methodInfo: MethodInfo) {
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interpreterCounter.count("optimize: " + methodInfo.implKey);
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var stream = new BytecodeStream(methodInfo.code);
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while (stream.currentBC() !== Bytecodes.END) {
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if (stream.rawCurrentBC() === Bytecodes.WIDE) {
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stream.next();
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continue;
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}
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switch (stream.currentBC()) {
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case Bytecodes.ALOAD:
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if (stream.nextBC() === Bytecodes.ILOAD) {
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stream.writeCurrentBC(Bytecodes.ALOAD_ILOAD);
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}
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break;
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case Bytecodes.IINC:
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if (stream.nextBC() === Bytecodes.GOTO) {
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stream.writeCurrentBC(Bytecodes.IINC_GOTO);
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}
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break;
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case Bytecodes.ARRAYLENGTH:
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if (stream.nextBC() === Bytecodes.IF_ICMPGE) {
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stream.writeCurrentBC(Bytecodes.ARRAYLENGTH_IF_ICMPGE);
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}
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break;
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}
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stream.next();
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}
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methodInfo.isOptimized = true;
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}
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function resolve(index: number, cp: ConstantPoolEntry [], isStatic: boolean = false): any {
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var entry = cp[index];
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if (entry.tag) {
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entry = $.ctx.resolve(cp, index, isStatic);
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}
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return entry;
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}
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function resolveField(index: number, cp: ConstantPoolEntry [], isStatic: boolean): FieldInfo {
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return <FieldInfo><any>resolve(index, cp, isStatic);
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}
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function resolveClass(index: number, cp: ConstantPoolEntry [], isStatic: boolean): ClassInfo {
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return <ClassInfo><any>resolve(index, cp, isStatic);
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}
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function resolveMethod(index: number, cp: ConstantPoolEntry [], isStatic: boolean): MethodInfo {
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return <MethodInfo><any>resolve(index, cp, isStatic);
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}
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/**
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* Debugging helper to make sure native methods were implemented correctly.
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*/
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function checkReturnValue(methodInfo: MethodInfo, returnValue: any) {
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if (returnValue instanceof Promise) {
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console.error("You forgot to call asyncImpl():", methodInfo.implKey);
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} else if (methodInfo.getReturnKind() === Kind.Void && returnValue) {
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console.error("You returned something in a void method:", methodInfo.implKey);
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} else if (methodInfo.getReturnKind() !== Kind.Void && (returnValue === undefined) &&
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!U) {
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console.error("You returned undefined in a non-void method:", methodInfo.implKey);
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} else if (typeof returnValue === "string") {
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console.error("You returned a non-wrapped string:", methodInfo.implKey);
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} else if (returnValue === true || returnValue === false) {
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console.error("You returned a JS boolean:", methodInfo.implKey);
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}
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}
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/**
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* The number of opcodes executed thus far.
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*/
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export var ops = 0;
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/**
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* Temporarily used for fn.apply.
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*/
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var argArray = [];
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var CONTINUE_AFTER_POPFRAME = {}; // Sentinel object.
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function popFrame(consumes) {
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var ctx = $.ctx;
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var frame = ctx.current();
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var cp = frame.cp;
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var stack = frame.stack;
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if (frame.lockObject)
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ctx.monitorExit(frame.lockObject);
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var callee = frame;
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ctx.frames.pop();
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var caller = frame = ctx.frames.length === 0 ? null : ctx.current();
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Instrument.callExitHooks(callee.methodInfo, caller, callee);
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if (frame === null) {
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var returnValue = null;
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switch (consumes) {
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case 2:
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returnValue = callee.stack.pop2();
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break;
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case 1:
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returnValue = callee.stack.pop();
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break;
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}
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return returnValue;
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}
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stack = frame.stack;
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cp = frame.cp;
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switch (consumes) {
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case 2:
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stack.push2(callee.stack.pop2());
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break;
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case 1:
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stack.push(callee.stack.pop());
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break;
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}
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return CONTINUE_AFTER_POPFRAME;
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}
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function buildExceptionLog(ex, stackTrace) {
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var className = ex.klass.classInfo.className;
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var detailMessage = util.fromJavaString(CLASSES.getField(ex.klass.classInfo, "I.detailMessage.Ljava/lang/String;").get(ex));
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return className + ": " + (detailMessage || "") + "\n" + stackTrace.map(function(entry) {
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return " - " + entry.className + "." + entry.methodName + "(), pc=" + entry.offset;
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}).join("\n") + "\n\n";
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}
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function throw_(ex) {
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var ctx = $.ctx;
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var frame = ctx.current();
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var cp = frame.cp;
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var stack = frame.stack;
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var exClass = ex.class;
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if (!ex.stackTrace) {
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ex.stackTrace = [];
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}
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var stackTrace = ex.stackTrace;
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var classInfo;
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do {
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var exception_table = frame.methodInfo.exception_table;
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var handler_pc = null;
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for (var i=0; exception_table && i<exception_table.length; i++) {
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if (frame.opPc >= exception_table[i].start_pc && frame.opPc < exception_table[i].end_pc) {
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if (exception_table[i].catch_type === 0) {
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handler_pc = exception_table[i].handler_pc;
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break;
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} else {
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classInfo = resolve(exception_table[i].catch_type, cp, false);
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if (isAssignableTo(ex.klass, classInfo.klass)) {
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handler_pc = exception_table[i].handler_pc;
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break;
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}
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}
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}
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}
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classInfo = frame.methodInfo.classInfo;
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if (classInfo && classInfo.className) {
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stackTrace.push({
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className: classInfo.className,
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methodName: frame.methodInfo.name,
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offset: frame.pc
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});
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}
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if (handler_pc != null) {
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stack.length = 0;
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stack.push(ex);
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frame.pc = handler_pc;
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if (VM.DEBUG_PRINT_ALL_EXCEPTIONS) {
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console.error(buildExceptionLog(ex, stackTrace));
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}
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return;
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}
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popFrame(0);
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frame = ctx.current();
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cp = frame && frame.cp || null;
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stack = frame && frame.stack || null;
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} while (frame);
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if (ctx.frameSets.length === 0) {
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ctx.kill();
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if (ctx.thread && ctx.thread.waiting && ctx.thread.waiting.length > 0) {
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console.error(buildExceptionLog(ex, stackTrace));
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ctx.thread.waiting.forEach(function(waitingCtx, n) {
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ctx.thread.waiting[n] = null;
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waitingCtx.wakeup(ctx.thread);
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});
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}
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throw new Error(buildExceptionLog(ex, stackTrace));
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} else {
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throw ex;
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}
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}
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function classInitCheck(classInfo, ip) {
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var ctx = $.ctx;
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if (classInfo.isArrayClass || ctx.runtime.initialized[classInfo.className])
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return;
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ctx.pushClassInitFrame(classInfo);
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if (U) {
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ctx.current().pc = ip;
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return;
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}
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}
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export function interpret() {
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var ctx = $.ctx;
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var frame = ctx.current();
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var cp = frame.cp;
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var stack = frame.stack;
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var returnValue = null;
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var traceBytecodes = false;
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var traceSourceLocation = true;
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var lastSourceLocation;
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var index: any, value: any, constant: any;
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var a: any, b: any, c: any;
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var pc: number, startPc: number;
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var type;
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var size;
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var array: any;
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var object: java.lang.Object;
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var fieldInfo: FieldInfo;
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var classInfo: ClassInfo;
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if (!frame.methodInfo.isOptimized && frame.methodInfo.opCount > 100) {
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optimizeMethodBytecode(frame.methodInfo);
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}
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while (true) {
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ops ++;
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frame.methodInfo.opCount ++;
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frame.opPc = frame.pc;
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var op: Bytecodes = frame.read8();
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if (traceBytecodes) {
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if (traceSourceLocation) {
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if (frame.methodInfo) {
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var sourceLocation = frame.methodInfo.getSourceLocationForPC(frame.pc - 1);
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if (sourceLocation && !sourceLocation.equals(lastSourceLocation)) {
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traceWriter && traceWriter.greenLn(sourceLocation.toString() + " " + CLASSES.getSourceLine(sourceLocation));
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lastSourceLocation = sourceLocation;
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}
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}
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}
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if (traceWriter) {
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frame.trace(traceWriter);
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}
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}
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// frame.trace(new IndentingWriter());
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//if (interpreterCounter) {
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// var key: any = "";
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// key += frame.methodInfo.isSynchronized ? " Synchronized" : "";
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// key += frame.methodInfo.exception_table.length ? " Has Exceptions" : "";
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// key += " " + frame.methodInfo.implKey;
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// interpreterCounter.count("OP " + key);
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//}
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// interpreterCounter && interpreterCounter.count("OP " + frame.methodInfo.implKey + " ");
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// interpreterCounter.count(frame.methodInfo.implKey);
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// interpreterCounter && interpreterCounter.count("OP " + Bytecodes[op]);
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//interpreterCounter && interpreterCounter.count("DI " + Bytecodes[op] + " " + Bytecodes[frame.code[n]]);
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try {
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switch (op) {
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case Bytecodes.NOP:
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break;
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case Bytecodes.ACONST_NULL:
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stack.push(null);
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break;
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case Bytecodes.ICONST_M1:
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case Bytecodes.ICONST_0:
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case Bytecodes.ICONST_1:
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case Bytecodes.ICONST_2:
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case Bytecodes.ICONST_3:
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case Bytecodes.ICONST_4:
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case Bytecodes.ICONST_5:
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stack.push(op - Bytecodes.ICONST_0);
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break;
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case Bytecodes.FCONST_0:
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case Bytecodes.FCONST_1:
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case Bytecodes.FCONST_2:
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stack.push(op - Bytecodes.FCONST_0);
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break;
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case Bytecodes.DCONST_0:
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case Bytecodes.DCONST_1:
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stack.push2(op - Bytecodes.DCONST_0);
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break;
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case Bytecodes.LCONST_0:
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case Bytecodes.LCONST_1:
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stack.push2(Long.fromInt(op - Bytecodes.LCONST_0));
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break;
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case Bytecodes.BIPUSH:
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stack.push(frame.read8Signed());
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break;
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case Bytecodes.SIPUSH:
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stack.push(frame.read16Signed());
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break;
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case Bytecodes.LDC:
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case Bytecodes.LDC_W:
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index = (op === Bytecodes.LDC) ? frame.read8() : frame.read16();
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constant = resolve(index, cp, false);
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stack.push(constant);
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break;
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case Bytecodes.LDC2_W:
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index = frame.read16();
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constant = resolve(index, cp, false);
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stack.push2(constant);
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break;
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case Bytecodes.ILOAD:
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stack.push(frame.getLocal(frame.read8()));
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break;
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case Bytecodes.FLOAD:
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stack.push(frame.getLocal(frame.read8()));
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break;
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case Bytecodes.ALOAD:
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stack.push(frame.getLocal(frame.read8()));
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break;
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case Bytecodes.ALOAD_ILOAD:
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stack.push(frame.getLocal(frame.read8()));
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frame.pc ++;
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stack.push(frame.getLocal(frame.read8()));
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break;
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case Bytecodes.LLOAD:
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case Bytecodes.DLOAD:
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stack.push2(frame.getLocal(frame.read8()));
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break;
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case Bytecodes.ILOAD_0:
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case Bytecodes.ILOAD_1:
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case Bytecodes.ILOAD_2:
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case Bytecodes.ILOAD_3:
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stack.push(frame.getLocal(op - Bytecodes.ILOAD_0));
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break;
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case Bytecodes.FLOAD_0:
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case Bytecodes.FLOAD_1:
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case Bytecodes.FLOAD_2:
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case Bytecodes.FLOAD_3:
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stack.push(frame.getLocal(op - Bytecodes.FLOAD_0));
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break;
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case Bytecodes.ALOAD_0:
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case Bytecodes.ALOAD_1:
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case Bytecodes.ALOAD_2:
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case Bytecodes.ALOAD_3:
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stack.push(frame.getLocal(op - Bytecodes.ALOAD_0));
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break;
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case Bytecodes.LLOAD_0:
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case Bytecodes.LLOAD_1:
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case Bytecodes.LLOAD_2:
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case Bytecodes.LLOAD_3:
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stack.push2(frame.getLocal(op - Bytecodes.LLOAD_0));
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break;
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case Bytecodes.DLOAD_0:
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case Bytecodes.DLOAD_1:
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case Bytecodes.DLOAD_2:
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case Bytecodes.DLOAD_3:
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stack.push2(frame.getLocal(op - Bytecodes.DLOAD_0));
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break;
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case Bytecodes.IALOAD:
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case Bytecodes.FALOAD:
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case Bytecodes.AALOAD:
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case Bytecodes.BALOAD:
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case Bytecodes.CALOAD:
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case Bytecodes.SALOAD:
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index = stack.pop();
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array = stack.pop();
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checkArrayBounds(array, index);
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stack.push(array[index]);
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break;
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case Bytecodes.LALOAD:
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case Bytecodes.DALOAD:
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index = stack.pop();
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array = stack.pop();
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checkArrayBounds(array, index);
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stack.push2(array[index]);
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break;
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case Bytecodes.ISTORE:
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case Bytecodes.FSTORE:
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case Bytecodes.ASTORE:
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frame.setLocal(frame.read8(), stack.pop());
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break;
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case Bytecodes.LSTORE:
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case Bytecodes.DSTORE:
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frame.setLocal(frame.read8(), stack.pop2());
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break;
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case Bytecodes.ISTORE_0:
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case Bytecodes.FSTORE_0:
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case Bytecodes.ASTORE_0:
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frame.setLocal(0, stack.pop());
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break;
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case Bytecodes.ISTORE_1:
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case Bytecodes.FSTORE_1:
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case Bytecodes.ASTORE_1:
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frame.setLocal(1, stack.pop());
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break;
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case Bytecodes.ISTORE_2:
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case Bytecodes.FSTORE_2:
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case Bytecodes.ASTORE_2:
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frame.setLocal(2, stack.pop());
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break;
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case Bytecodes.ISTORE_3:
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case Bytecodes.FSTORE_3:
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case Bytecodes.ASTORE_3:
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frame.setLocal(3, stack.pop());
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break;
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case Bytecodes.LSTORE_0:
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case Bytecodes.DSTORE_0:
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frame.setLocal(0, stack.pop2());
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break;
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case Bytecodes.LSTORE_1:
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case Bytecodes.DSTORE_1:
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frame.setLocal(1, stack.pop2());
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break;
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case Bytecodes.LSTORE_2:
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case Bytecodes.DSTORE_2:
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frame.setLocal(2, stack.pop2());
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break;
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case Bytecodes.LSTORE_3:
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case Bytecodes.DSTORE_3:
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frame.setLocal(3, stack.pop2());
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break;
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case Bytecodes.IASTORE:
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case Bytecodes.FASTORE:
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case Bytecodes.BASTORE:
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case Bytecodes.CASTORE:
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case Bytecodes.SASTORE:
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value = stack.pop();
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index = stack.pop();
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array = stack.pop();
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checkArrayBounds(array, index);
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array[index] = value;
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break;
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case Bytecodes.LASTORE:
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case Bytecodes.DASTORE:
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value = stack.pop2();
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index = stack.pop();
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array = stack.pop();
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checkArrayBounds(array, index);
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array[index] = value;
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break;
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case Bytecodes.AASTORE:
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value = stack.pop();
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index = stack.pop();
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array = stack.pop();
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checkArrayBounds(array, index);
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checkArrayStore(array, value);
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array[index] = value;
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break;
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case Bytecodes.POP:
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stack.pop();
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break;
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case Bytecodes.POP2:
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stack.pop2();
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break;
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case Bytecodes.DUP:
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stack.push(stack[stack.length - 1]);
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break;
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case Bytecodes.DUP_X1:
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a = stack.pop();
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b = stack.pop();
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stack.push(a);
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stack.push(b);
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stack.push(a);
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break;
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case Bytecodes.DUP_X2:
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a = stack.pop();
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b = stack.pop();
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c = stack.pop();
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stack.push(a);
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stack.push(c);
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stack.push(b);
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stack.push(a);
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break;
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case Bytecodes.DUP2:
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a = stack.pop();
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b = stack.pop();
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stack.push(b);
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stack.push(a);
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stack.push(b);
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stack.push(a);
|
|
break;
|
|
case Bytecodes.DUP2_X1:
|
|
a = stack.pop();
|
|
b = stack.pop();
|
|
c = stack.pop();
|
|
stack.push(b);
|
|
stack.push(a);
|
|
stack.push(c);
|
|
stack.push(b);
|
|
stack.push(a);
|
|
break;
|
|
case Bytecodes.DUP2_X2:
|
|
a = stack.pop();
|
|
b = stack.pop();
|
|
c = stack.pop();
|
|
var d = stack.pop();
|
|
stack.push(b);
|
|
stack.push(a);
|
|
stack.push(d);
|
|
stack.push(c);
|
|
stack.push(b);
|
|
stack.push(a);
|
|
break;
|
|
case Bytecodes.SWAP:
|
|
a = stack.pop();
|
|
b = stack.pop();
|
|
stack.push(a);
|
|
stack.push(b);
|
|
break;
|
|
case Bytecodes.IINC:
|
|
index = frame.read8();
|
|
value = frame.read8Signed();
|
|
frame.setLocal(index, frame.getLocal(index) + value);
|
|
break;
|
|
case Bytecodes.IINC_GOTO:
|
|
index = frame.read8();
|
|
value = frame.read8Signed();
|
|
frame.setLocal(index, frame.getLocal(index) + value);
|
|
frame.pc ++;
|
|
frame.pc = frame.readTargetPC();
|
|
break;
|
|
case Bytecodes.IADD:
|
|
stack.push((stack.pop() + stack.pop()) | 0);
|
|
break;
|
|
case Bytecodes.LADD:
|
|
stack.push2(stack.pop2().add(stack.pop2()));
|
|
break;
|
|
case Bytecodes.FADD:
|
|
stack.push(Math.fround(stack.pop() + stack.pop()));
|
|
break;
|
|
case Bytecodes.DADD:
|
|
stack.push2(stack.pop2() + stack.pop2());
|
|
break;
|
|
case Bytecodes.ISUB:
|
|
stack.push((-stack.pop() + stack.pop()) | 0);
|
|
break;
|
|
case Bytecodes.LSUB:
|
|
stack.push2(stack.pop2().negate().add(stack.pop2()));
|
|
break;
|
|
case Bytecodes.FSUB:
|
|
stack.push(Math.fround(-stack.pop() + stack.pop()));
|
|
break;
|
|
case Bytecodes.DSUB:
|
|
stack.push2(-stack.pop2() + stack.pop2());
|
|
break;
|
|
case Bytecodes.IMUL:
|
|
stack.push(Math.imul(stack.pop(), stack.pop()));
|
|
break;
|
|
case Bytecodes.LMUL:
|
|
stack.push2(stack.pop2().multiply(stack.pop2()));
|
|
break;
|
|
case Bytecodes.FMUL:
|
|
stack.push(Math.fround(stack.pop() * stack.pop()));
|
|
break;
|
|
case Bytecodes.DMUL:
|
|
stack.push2(stack.pop2() * stack.pop2());
|
|
break;
|
|
case Bytecodes.IDIV:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
checkDivideByZero(b);
|
|
stack.push((a === Constants.INT_MIN && b === -1) ? a : ((a / b) | 0));
|
|
break;
|
|
case Bytecodes.LDIV:
|
|
b = stack.pop2();
|
|
a = stack.pop2();
|
|
checkDivideByZeroLong(b);
|
|
stack.push2(a.div(b));
|
|
break;
|
|
case Bytecodes.FDIV:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
stack.push(Math.fround(a / b));
|
|
break;
|
|
case Bytecodes.DDIV:
|
|
b = stack.pop2();
|
|
a = stack.pop2();
|
|
stack.push2(a / b);
|
|
break;
|
|
case Bytecodes.IREM:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
checkDivideByZero(b);
|
|
stack.push(a % b);
|
|
break;
|
|
case Bytecodes.LREM:
|
|
b = stack.pop2();
|
|
a = stack.pop2();
|
|
checkDivideByZeroLong(b);
|
|
stack.push2(a.modulo(b));
|
|
break;
|
|
case Bytecodes.FREM:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
stack.push(Math.fround(a % b));
|
|
break;
|
|
case Bytecodes.DREM:
|
|
b = stack.pop2();
|
|
a = stack.pop2();
|
|
stack.push2(a % b);
|
|
break;
|
|
case Bytecodes.INEG:
|
|
stack.push((-stack.pop()) | 0);
|
|
break;
|
|
case Bytecodes.LNEG:
|
|
stack.push2(stack.pop2().negate());
|
|
break;
|
|
case Bytecodes.FNEG:
|
|
stack.push(-stack.pop());
|
|
break;
|
|
case Bytecodes.DNEG:
|
|
stack.push2(-stack.pop2());
|
|
break;
|
|
case Bytecodes.ISHL:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
stack.push(a << b);
|
|
break;
|
|
case Bytecodes.LSHL:
|
|
b = stack.pop();
|
|
a = stack.pop2();
|
|
stack.push2(a.shiftLeft(b));
|
|
break;
|
|
case Bytecodes.ISHR:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
stack.push(a >> b);
|
|
break;
|
|
case Bytecodes.LSHR:
|
|
b = stack.pop();
|
|
a = stack.pop2();
|
|
stack.push2(a.shiftRight(b));
|
|
break;
|
|
case Bytecodes.IUSHR:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
stack.push(a >>> b);
|
|
break;
|
|
case Bytecodes.LUSHR:
|
|
b = stack.pop();
|
|
a = stack.pop2();
|
|
stack.push2(a.shiftRightUnsigned(b));
|
|
break;
|
|
case Bytecodes.IAND:
|
|
stack.push(stack.pop() & stack.pop());
|
|
break;
|
|
case Bytecodes.LAND:
|
|
stack.push2(stack.pop2().and(stack.pop2()));
|
|
break;
|
|
case Bytecodes.IOR:
|
|
stack.push(stack.pop() | stack.pop());
|
|
break;
|
|
case Bytecodes.LOR:
|
|
stack.push2(stack.pop2().or(stack.pop2()));
|
|
break;
|
|
case Bytecodes.IXOR:
|
|
stack.push(stack.pop() ^ stack.pop());
|
|
break;
|
|
case Bytecodes.LXOR:
|
|
stack.push2(stack.pop2().xor(stack.pop2()));
|
|
break;
|
|
case Bytecodes.LCMP:
|
|
b = stack.pop2();
|
|
a = stack.pop2();
|
|
if (a.greaterThan(b)) {
|
|
stack.push(1);
|
|
} else if (a.lessThan(b)) {
|
|
stack.push(-1);
|
|
} else {
|
|
stack.push(0);
|
|
}
|
|
break;
|
|
case Bytecodes.FCMPL:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
if (isNaN(a) || isNaN(b)) {
|
|
stack.push(-1);
|
|
} else if (a > b) {
|
|
stack.push(1);
|
|
} else if (a < b) {
|
|
stack.push(-1);
|
|
} else {
|
|
stack.push(0);
|
|
}
|
|
break;
|
|
case Bytecodes.FCMPG:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
if (isNaN(a) || isNaN(b)) {
|
|
stack.push(1);
|
|
} else if (a > b) {
|
|
stack.push(1);
|
|
} else if (a < b) {
|
|
stack.push(-1);
|
|
} else {
|
|
stack.push(0);
|
|
}
|
|
break;
|
|
case Bytecodes.DCMPL:
|
|
b = stack.pop2();
|
|
a = stack.pop2();
|
|
if (isNaN(a) || isNaN(b)) {
|
|
stack.push(-1);
|
|
} else if (a > b) {
|
|
stack.push(1);
|
|
} else if (a < b) {
|
|
stack.push(-1);
|
|
} else {
|
|
stack.push(0);
|
|
}
|
|
break;
|
|
case Bytecodes.DCMPG:
|
|
b = stack.pop2();
|
|
a = stack.pop2();
|
|
if (isNaN(a) || isNaN(b)) {
|
|
stack.push(1);
|
|
} else if (a > b) {
|
|
stack.push(1);
|
|
} else if (a < b) {
|
|
stack.push(-1);
|
|
} else {
|
|
stack.push(0);
|
|
}
|
|
break;
|
|
case Bytecodes.IFEQ:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() === 0) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IFNE:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() !== 0) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IFLT:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() < 0) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IFGE:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() >= 0) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IFGT:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() > 0) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IFLE:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() <= 0) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IF_ICMPEQ:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() === stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IF_ICMPNE:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() !== stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IF_ICMPLT:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() > stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IF_ICMPGE:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() <= stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IF_ICMPGT:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() < stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IF_ICMPLE:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() >= stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IF_ACMPEQ:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() === stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IF_ACMPNE:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() !== stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IFNULL:
|
|
pc = frame.readTargetPC();
|
|
if (!stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.IFNONNULL:
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.GOTO:
|
|
frame.pc = frame.readTargetPC();
|
|
break;
|
|
case Bytecodes.GOTO_W:
|
|
frame.pc = frame.read32Signed() - 1;
|
|
break;
|
|
case Bytecodes.JSR:
|
|
pc = frame.read16();
|
|
stack.push(frame.pc);
|
|
frame.pc = pc;
|
|
break;
|
|
case Bytecodes.JSR_W:
|
|
pc = frame.read32();
|
|
stack.push(frame.pc);
|
|
frame.pc = pc;
|
|
break;
|
|
case Bytecodes.RET:
|
|
frame.pc = frame.getLocal(frame.read8());
|
|
break;
|
|
case Bytecodes.I2L:
|
|
stack.push2(Long.fromInt(stack.pop()));
|
|
break;
|
|
case Bytecodes.I2F:
|
|
break;
|
|
case Bytecodes.I2D:
|
|
stack.push2(stack.pop());
|
|
break;
|
|
case Bytecodes.L2I:
|
|
stack.push(stack.pop2().toInt());
|
|
break;
|
|
case Bytecodes.L2F:
|
|
stack.push(Math.fround(stack.pop2().toNumber()));
|
|
break;
|
|
case Bytecodes.L2D:
|
|
stack.push2(stack.pop2().toNumber());
|
|
break;
|
|
case Bytecodes.F2I:
|
|
stack.push(util.double2int(stack.pop()));
|
|
break;
|
|
case Bytecodes.F2L:
|
|
stack.push2(Long.fromNumber(stack.pop()));
|
|
break;
|
|
case Bytecodes.F2D:
|
|
stack.push2(stack.pop());
|
|
break;
|
|
case Bytecodes.D2I:
|
|
stack.push(util.double2int(stack.pop2()));
|
|
break;
|
|
case Bytecodes.D2L:
|
|
stack.push2(util.double2long(stack.pop2()));
|
|
break;
|
|
case Bytecodes.D2F:
|
|
stack.push(Math.fround(stack.pop2()));
|
|
break;
|
|
case Bytecodes.I2B:
|
|
stack.push((stack.pop() << 24) >> 24);
|
|
break;
|
|
case Bytecodes.I2C:
|
|
stack.push(stack.pop() & 0xffff);
|
|
break;
|
|
case Bytecodes.I2S:
|
|
stack.push((stack.pop() << 16) >> 16);
|
|
break;
|
|
case Bytecodes.TABLESWITCH:
|
|
frame.pc = frame.tableSwitch();
|
|
break;
|
|
case Bytecodes.LOOKUPSWITCH:
|
|
frame.pc = frame.lookupSwitch();
|
|
break;
|
|
case Bytecodes.NEWARRAY:
|
|
type = frame.read8();
|
|
size = stack.pop();
|
|
if (size < 0) {
|
|
throw $.newNegativeArraySizeException();
|
|
}
|
|
stack.push(util.newPrimitiveArray("????ZCFDBSIJ"[type], size));
|
|
break;
|
|
case Bytecodes.ANEWARRAY:
|
|
index = frame.read16();
|
|
classInfo = resolveClass(index, cp, false);
|
|
size = stack.pop();
|
|
if (size < 0) {
|
|
throw $.newNegativeArraySizeException();
|
|
}
|
|
stack.push(util.newArray(classInfo, size));
|
|
break;
|
|
case Bytecodes.MULTIANEWARRAY:
|
|
index = frame.read16();
|
|
classInfo = resolveClass(index, cp, false);
|
|
var dimensions = frame.read8();
|
|
var lengths = new Array(dimensions);
|
|
for (var i = 0; i < dimensions; i++)
|
|
lengths[i] = stack.pop();
|
|
stack.push(util.newMultiArray(classInfo, lengths.reverse()));
|
|
break;
|
|
case Bytecodes.ARRAYLENGTH:
|
|
array = stack.pop();
|
|
stack.push(array.length);
|
|
break;
|
|
case Bytecodes.ARRAYLENGTH_IF_ICMPGE:
|
|
array = stack.pop();
|
|
stack.push(array.length);
|
|
frame.pc ++;
|
|
pc = frame.readTargetPC();
|
|
if (stack.pop() <= stack.pop()) {
|
|
frame.pc = pc;
|
|
}
|
|
break;
|
|
case Bytecodes.GETFIELD:
|
|
index = frame.read16();
|
|
fieldInfo = resolveField(index, cp, false);
|
|
object = stack.pop();
|
|
stack.pushKind(fieldInfo.kind, fieldInfo.get(object));
|
|
break;
|
|
case Bytecodes.PUTFIELD:
|
|
index = frame.read16();
|
|
fieldInfo = resolveField(index, cp, false);
|
|
value = stack.popKind(fieldInfo.kind);
|
|
object = stack.pop();
|
|
fieldInfo.set(object, value);
|
|
break;
|
|
case Bytecodes.GETSTATIC:
|
|
index = frame.read16();
|
|
fieldInfo = resolveField(index, cp, true);
|
|
classInitCheck(fieldInfo.classInfo, frame.pc - 3);
|
|
if (U) {
|
|
return;
|
|
}
|
|
value = fieldInfo.getStatic();
|
|
stack.pushKind(fieldInfo.kind, value);
|
|
break;
|
|
case Bytecodes.PUTSTATIC:
|
|
index = frame.read16();
|
|
fieldInfo = resolveField(index, cp, true);
|
|
classInitCheck(fieldInfo.classInfo, frame.pc - 3);
|
|
if (U) {
|
|
return;
|
|
}
|
|
fieldInfo.setStatic(stack.popKind(fieldInfo.kind));
|
|
break;
|
|
case Bytecodes.NEW:
|
|
index = frame.read16();
|
|
classInfo = resolveClass(index, cp, false);
|
|
classInitCheck(classInfo, frame.pc - 3);
|
|
if (U) {
|
|
return;
|
|
}
|
|
stack.push(util.newObject(classInfo));
|
|
break;
|
|
case Bytecodes.CHECKCAST:
|
|
index = frame.read16();
|
|
classInfo = resolveClass(index, cp, false);
|
|
object = stack[stack.length - 1];
|
|
if (object && !isAssignableTo(object.klass, classInfo.klass)) {
|
|
throw $.newClassCastException(
|
|
object.klass.classInfo.className + " is not assignable to " +
|
|
classInfo.className);
|
|
}
|
|
break;
|
|
case Bytecodes.INSTANCEOF:
|
|
index = frame.read16();
|
|
classInfo = resolveClass(index, cp, false);
|
|
object = stack.pop();
|
|
var result = !object ? false : isAssignableTo(object.klass, classInfo.klass);
|
|
stack.push(result ? 1 : 0);
|
|
break;
|
|
case Bytecodes.ATHROW:
|
|
object = stack.pop();
|
|
if (!object) {
|
|
throw $.newNullPointerException();
|
|
}
|
|
throw object;
|
|
break;
|
|
case Bytecodes.MONITORENTER:
|
|
object = stack.pop();
|
|
ctx.monitorEnter(object);
|
|
if (U === VMState.Pausing) {
|
|
return;
|
|
}
|
|
break;
|
|
case Bytecodes.MONITOREXIT:
|
|
object = stack.pop();
|
|
ctx.monitorExit(object);
|
|
break;
|
|
case Bytecodes.WIDE:
|
|
frame.wide();
|
|
break;
|
|
case Bytecodes.INVOKEVIRTUAL:
|
|
case Bytecodes.INVOKESPECIAL:
|
|
case Bytecodes.INVOKESTATIC:
|
|
case Bytecodes.INVOKEINTERFACE:
|
|
var startPc = frame.pc - 1;
|
|
index = frame.read16();
|
|
if (op === Bytecodes.INVOKEINTERFACE) {
|
|
var argsNumber = frame.read8();
|
|
var zero = frame.read8();
|
|
}
|
|
var isStatic = (op === Bytecodes.INVOKESTATIC);
|
|
var methodInfo = cp[index];
|
|
if (methodInfo.tag) {
|
|
methodInfo = resolve(index, cp, isStatic);
|
|
if (isStatic) {
|
|
classInitCheck(methodInfo.classInfo, startPc);
|
|
if (U) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
object = null;
|
|
var fn;
|
|
if (!isStatic) {
|
|
object = frame.peekInvokeObject(methodInfo);
|
|
switch (op) {
|
|
case Bytecodes.INVOKEVIRTUAL:
|
|
case Bytecodes.INVOKEINTERFACE:
|
|
fn = object[methodInfo.mangledName];
|
|
break;
|
|
case Bytecodes.INVOKESPECIAL:
|
|
checkNull(object);
|
|
fn = methodInfo.fn;
|
|
break;
|
|
}
|
|
} else {
|
|
fn = methodInfo.fn;
|
|
}
|
|
var returnValue;
|
|
var argumentSlots = methodInfo.hasTwoSlotArguments ? -1 : methodInfo.argumentSlots;
|
|
switch (argumentSlots) {
|
|
case 0:
|
|
returnValue = fn.call(object);
|
|
break;
|
|
case 1:
|
|
a = stack.pop();
|
|
returnValue = fn.call(object, a);
|
|
break;
|
|
case 2:
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
returnValue = fn.call(object, a, b);
|
|
break;
|
|
case 3:
|
|
c = stack.pop();
|
|
b = stack.pop();
|
|
a = stack.pop();
|
|
returnValue = fn.call(object, a, b, c);
|
|
break;
|
|
default:
|
|
if (methodInfo.hasTwoSlotArguments) {
|
|
frame.popArgumentsInto(methodInfo.signatureDescriptor, argArray);
|
|
} else {
|
|
popManyInto(stack, methodInfo.argumentSlots, argArray);
|
|
}
|
|
var returnValue = fn.apply(object, argArray);
|
|
}
|
|
if (!isStatic) stack.pop();
|
|
|
|
if (!release) {
|
|
checkReturnValue(methodInfo, returnValue);
|
|
}
|
|
|
|
if (U) {
|
|
return;
|
|
}
|
|
|
|
if (methodInfo.getReturnKind() !== Kind.Void) {
|
|
release || assert(returnValue !== undefined, methodInfo.signatureDescriptor + " " + methodInfo.returnKind + " " + Kind.Void);
|
|
if (isTwoSlot(methodInfo.getReturnKind())) {
|
|
stack.push2(returnValue);
|
|
} else {
|
|
stack.push(returnValue);
|
|
}
|
|
}
|
|
break;
|
|
case Bytecodes.RETURN:
|
|
var returnValue = popFrame(0);
|
|
if (returnValue !== CONTINUE_AFTER_POPFRAME) {
|
|
return returnValue;
|
|
} else {
|
|
frame = ctx.current();
|
|
cp = frame && frame.cp || null;
|
|
stack = frame && frame.stack || null;
|
|
}
|
|
break;
|
|
case Bytecodes.IRETURN:
|
|
case Bytecodes.FRETURN:
|
|
case Bytecodes.ARETURN:
|
|
var returnValue = popFrame(1);
|
|
if (returnValue !== CONTINUE_AFTER_POPFRAME) {
|
|
return returnValue;
|
|
} else {
|
|
frame = ctx.current();
|
|
cp = frame && frame.cp || null;
|
|
stack = frame && frame.stack || null;
|
|
}
|
|
break;
|
|
case Bytecodes.LRETURN:
|
|
case Bytecodes.DRETURN:
|
|
var returnValue = popFrame(2);
|
|
if (returnValue !== CONTINUE_AFTER_POPFRAME) {
|
|
return returnValue;
|
|
} else {
|
|
frame = ctx.current();
|
|
cp = frame && frame.cp || null;
|
|
stack = frame && frame.stack || null;
|
|
}
|
|
break;
|
|
default:
|
|
var opName = Bytecodes[op];
|
|
throw new Error("Opcode " + opName + " [" + op + "] not supported.");
|
|
}
|
|
} catch (e) {
|
|
// This could potentially hide interpreter exceptions. Maybe we should only do this for
|
|
// compiled/native functions.
|
|
if (e.name === "TypeError") {
|
|
// JavaScript's TypeError is analogous to a NullPointerException.
|
|
e = $.newNullPointerException(e.message);
|
|
} else if (!e.klass) {
|
|
// A non-java exception was thrown. Rethrow so it is not handled by throw_.
|
|
throw e;
|
|
}
|
|
|
|
throw_(e);
|
|
frame = ctx.current();
|
|
cp = frame && frame.cp || null;
|
|
stack = frame && frame.stack || null;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
export class VM {
|
|
static execute = interpret;
|
|
static Yield = {toString: function () { return "YIELD" }};
|
|
static Pause = {toString: function () { return "PAUSE" }};
|
|
static DEBUG = false;
|
|
static DEBUG_PRINT_ALL_EXCEPTIONS = false;
|
|
}
|
|
}
|
|
|
|
var VM = J2ME.VM;
|