pluotsorbet/interpreter.ts

1159 строки
37 KiB
TypeScript

module J2ME {
declare var util;
declare var Instrument;
declare var Promise;
import BytecodeStream = Bytecode.BytecodeStream;
import checkArrayBounds = J2ME.checkArrayBounds;
import checkDivideByZero = J2ME.checkDivideByZero;
import checkDivideByZeroLong = J2ME.checkDivideByZeroLong;
import Bytecodes = Bytecode.Bytecodes;
import assert = Debug.assert;
import popManyInto = ArrayUtilities.popManyInto;
export var interpreterCounter = new Metrics.Counter(true);
var traceArrayAccess = false;
function traceArrayStore(index: number, array: any [], value: any) {
traceWriter.writeLn(toDebugString(array) + "[" + index + "] = " + toDebugString(value));
}
function traceArrayLoad(index: number, array: any []) {
assert(array[index] !== undefined);
traceWriter.writeLn(toDebugString(array) + "[" + index + "] (" + toDebugString(array[index]) + ")");
}
/**
* Optimize method bytecode.
*/
function optimizeMethodBytecode(methodInfo: MethodInfo) {
interpreterCounter.count("optimize: " + methodInfo.implKey);
var stream = new BytecodeStream(methodInfo.code);
while (stream.currentBC() !== Bytecodes.END) {
switch (stream.currentBC()) {
case Bytecodes.ALOAD:
if (stream.nextBC() === Bytecodes.ILOAD) {
stream.writeCurrentBC(Bytecodes.ALOAD_ILOAD);
}
break;
case Bytecodes.IINC:
if (stream.nextBC() === Bytecodes.GOTO) {
stream.writeCurrentBC(Bytecodes.IINC_GOTO);
}
break;
case Bytecodes.ARRAYLENGTH:
if (stream.nextBC() === Bytecodes.IF_ICMPGE) {
stream.writeCurrentBC(Bytecodes.ARRAYLENGTH_IF_ICMPGE);
}
break;
}
stream.next();
}
methodInfo.isOptimized = true;
}
function resolve(index: number, cp: ConstantPoolEntry [], isStatic: boolean = false): any {
var entry = cp[index];
if (entry.tag) {
entry = $.ctx.resolve(cp, index, isStatic);
}
return entry;
}
function resolveField(index: number, cp: ConstantPoolEntry [], isStatic: boolean): FieldInfo {
return <FieldInfo><any>resolve(index, cp, isStatic);
}
function resolveClass(index: number, cp: ConstantPoolEntry [], isStatic: boolean): ClassInfo {
return <ClassInfo><any>resolve(index, cp, isStatic);
}
function resolveMethod(index: number, cp: ConstantPoolEntry [], isStatic: boolean): MethodInfo {
return <MethodInfo><any>resolve(index, cp, isStatic);
}
/**
* The number of opcodes executed thus far.
*/
export var ops = 0;
/**
* Temporarily used for fn.apply.
*/
var argArray = [];
export function interpret(ctx: Context) {
var frame = ctx.current();
var cp = frame.cp;
var stack = frame.stack;
var returnValue = null;
function popFrame(consumes) {
if (frame.lockObject)
ctx.monitorExit(frame.lockObject);
var callee = frame;
ctx.frames.pop();
var caller = frame = ctx.frames.length === 0 ? null : ctx.current();
Instrument.callExitHooks(callee.methodInfo, caller, callee);
if (frame === null) {
returnValue = null;
switch (consumes) {
case 2:
returnValue = callee.stack.pop2();
break;
case 1:
returnValue = callee.stack.pop();
break;
}
return true;
}
stack = frame.stack;
cp = frame.cp;
switch (consumes) {
case 2:
stack.push2(callee.stack.pop2());
break;
case 1:
stack.push(callee.stack.pop());
break;
}
return false;
}
function buildExceptionLog(ex, stackTrace) {
var className = ex.klass.classInfo.className;
var detailMessage = util.fromJavaString(CLASSES.getField(ex.klass.classInfo, "I.detailMessage.Ljava/lang/String;").get(ex));
return className + ": " + (detailMessage || "") + "\n" + stackTrace.map(function(entry) {
return " - " + entry.className + "." + entry.methodName + "(), pc=" + entry.offset;
}).join("\n") + "\n\n";
}
function throw_(ex, ctx) {
var exClass = ex.class;
if (!ex.stackTrace) {
ex.stackTrace = [];
}
var stackTrace = ex.stackTrace;
var classInfo;
do {
var exception_table = frame.methodInfo.exception_table;
var handler_pc = null;
for (var i=0; exception_table && i<exception_table.length; i++) {
if (frame.pc >= exception_table[i].start_pc && frame.pc <= exception_table[i].end_pc) {
if (exception_table[i].catch_type === 0) {
handler_pc = exception_table[i].handler_pc;
break;
} else {
classInfo = resolve(exception_table[i].catch_type, cp, false);
if (isAssignableTo(ex.klass, classInfo.klass)) {
handler_pc = exception_table[i].handler_pc;
break;
}
}
}
}
classInfo = frame.methodInfo.classInfo;
if (classInfo && classInfo.className) {
stackTrace.push({
className: classInfo.className,
methodName: frame.methodInfo.name,
offset: frame.pc
});
}
if (handler_pc != null) {
stack.length = 0;
stack.push(ex);
frame.pc = handler_pc;
if (VM.DEBUG_PRINT_ALL_EXCEPTIONS) {
console.error(buildExceptionLog(ex, stackTrace));
}
return;
}
popFrame(0);
} while (frame);
if (ctx.frameSets.length === 0) {
ctx.kill();
if (ctx.thread && ctx.thread.waiting && ctx.thread.waiting.length > 0) {
console.error(buildExceptionLog(ex, stackTrace));
ctx.thread.waiting.forEach(function(waitingCtx, n) {
ctx.thread.waiting[n] = null;
waitingCtx.wakeup(ctx.thread);
});
}
throw new Error(buildExceptionLog(ex, stackTrace));
} else {
throw ex;
}
}
function classInitCheck(classInfo, ip) {
if (classInfo.isArrayClass || ctx.runtime.initialized[classInfo.className])
return;
ctx.pushClassInitFrame(classInfo);
if (U) {
frame.pc = ip;
return;
}
}
var traceBytecodes = false;
var traceSourceLocation = true;
var lastSourceLocation;
var index: any, value: any, constant: any;
var a: any, b: any, c: any;
var pc: number, startPc: number;
var type;
var size;
var array: any;
var object: java.lang.Object;
var fieldInfo: FieldInfo;
var classInfo: ClassInfo;
if (!frame.methodInfo.isOptimized && frame.methodInfo.opCount > 100) {
optimizeMethodBytecode(frame.methodInfo);
}
while (true) {
ops ++;
frame.methodInfo.opCount ++;
var n = frame.pc + Bytecode.lengthAt(frame.code, frame.pc);
var op: Bytecodes = frame.read8();
if (traceBytecodes) {
if (traceSourceLocation) {
if (frame.methodInfo) {
var sourceLocation = frame.methodInfo.getSourceLocationForPC(frame.pc - 1);
if (sourceLocation && !sourceLocation.equals(lastSourceLocation)) {
traceWriter && traceWriter.greenLn(sourceLocation.toString() + " " + CLASSES.getSourceLine(sourceLocation));
lastSourceLocation = sourceLocation;
}
}
}
if (traceWriter) {
frame.trace(traceWriter);
}
}
// frame.trace(new IndentingWriter());
//if (interpreterCounter) {
// var key: any = "";
// key += frame.methodInfo.isSynchronized ? " Synchronized" : "";
// key += frame.methodInfo.exception_table.length ? " Has Exceptions" : "";
// key += " " + frame.methodInfo.implKey;
// interpreterCounter.count("OP " + key);
//}
// interpreterCounter && interpreterCounter.count("OP " + frame.methodInfo.implKey + " ");
// interpreterCounter.count(frame.methodInfo.implKey);
// interpreterCounter && interpreterCounter.count("OP " + Bytecodes[op]);
//interpreterCounter && interpreterCounter.count("DI " + Bytecodes[op] + " " + Bytecodes[frame.code[n]]);
try {
switch (op) {
case Bytecodes.NOP:
break;
case Bytecodes.ACONST_NULL:
stack.push(null);
break;
case Bytecodes.ICONST_M1:
case Bytecodes.ICONST_0:
case Bytecodes.ICONST_1:
case Bytecodes.ICONST_2:
case Bytecodes.ICONST_3:
case Bytecodes.ICONST_4:
case Bytecodes.ICONST_5:
stack.push(op - Bytecodes.ICONST_0);
break;
case Bytecodes.FCONST_0:
case Bytecodes.FCONST_1:
case Bytecodes.FCONST_2:
stack.push(op - Bytecodes.FCONST_0);
break;
case Bytecodes.DCONST_0:
case Bytecodes.DCONST_1:
stack.push2(op - Bytecodes.DCONST_0);
break;
case Bytecodes.LCONST_0:
case Bytecodes.LCONST_1:
stack.push2(Long.fromInt(op - Bytecodes.LCONST_0));
break;
case Bytecodes.BIPUSH:
stack.push(frame.read8Signed());
break;
case Bytecodes.SIPUSH:
stack.push(frame.read16Signed());
break;
case Bytecodes.LDC:
case Bytecodes.LDC_W:
index = (op === Bytecodes.LDC) ? frame.read8() : frame.read16();
constant = resolve(index, cp, false);
stack.push(constant);
break;
case Bytecodes.LDC2_W:
index = frame.read16();
constant = resolve(index, cp, false);
stack.push2(constant);
break;
case Bytecodes.ILOAD:
stack.push(frame.getLocal(frame.read8()));
break;
case Bytecodes.FLOAD:
stack.push(frame.getLocal(frame.read8()));
break;
case Bytecodes.ALOAD:
stack.push(frame.getLocal(frame.read8()));
break;
case Bytecodes.ALOAD_ILOAD:
stack.push(frame.getLocal(frame.read8()));
frame.pc ++;
stack.push(frame.getLocal(frame.read8()));
break;
case Bytecodes.LLOAD:
case Bytecodes.DLOAD:
stack.push2(frame.getLocal(frame.read8()));
break;
case Bytecodes.ILOAD_0:
case Bytecodes.ILOAD_1:
case Bytecodes.ILOAD_2:
case Bytecodes.ILOAD_3:
stack.push(frame.getLocal(op - Bytecodes.ILOAD_0));
break;
case Bytecodes.FLOAD_0:
case Bytecodes.FLOAD_1:
case Bytecodes.FLOAD_2:
case Bytecodes.FLOAD_3:
stack.push(frame.getLocal(op - Bytecodes.FLOAD_0));
break;
case Bytecodes.ALOAD_0:
case Bytecodes.ALOAD_1:
case Bytecodes.ALOAD_2:
case Bytecodes.ALOAD_3:
stack.push(frame.getLocal(op - Bytecodes.ALOAD_0));
break;
case Bytecodes.LLOAD_0:
case Bytecodes.LLOAD_1:
case Bytecodes.LLOAD_2:
case Bytecodes.LLOAD_3:
stack.push2(frame.getLocal(op - Bytecodes.LLOAD_0));
break;
case Bytecodes.DLOAD_0:
case Bytecodes.DLOAD_1:
case Bytecodes.DLOAD_2:
case Bytecodes.DLOAD_3:
stack.push2(frame.getLocal(op - Bytecodes.DLOAD_0));
break;
case Bytecodes.IALOAD:
case Bytecodes.FALOAD:
case Bytecodes.AALOAD:
case Bytecodes.BALOAD:
case Bytecodes.CALOAD:
case Bytecodes.SALOAD:
index = stack.pop();
array = stack.pop();
checkArrayBounds(array, index);
stack.push(array[index]);
break;
case Bytecodes.LALOAD:
case Bytecodes.DALOAD:
index = stack.pop();
array = stack.pop();
checkArrayBounds(array, index);
stack.push2(array[index]);
break;
case Bytecodes.ISTORE:
case Bytecodes.FSTORE:
case Bytecodes.ASTORE:
frame.setLocal(frame.read8(), stack.pop());
break;
case Bytecodes.LSTORE:
case Bytecodes.DSTORE:
frame.setLocal(frame.read8(), stack.pop2());
break;
case Bytecodes.ISTORE_0:
case Bytecodes.FSTORE_0:
case Bytecodes.ASTORE_0:
frame.setLocal(0, stack.pop());
break;
case Bytecodes.ISTORE_1:
case Bytecodes.FSTORE_1:
case Bytecodes.ASTORE_1:
frame.setLocal(1, stack.pop());
break;
case Bytecodes.ISTORE_2:
case Bytecodes.FSTORE_2:
case Bytecodes.ASTORE_2:
frame.setLocal(2, stack.pop());
break;
case Bytecodes.ISTORE_3:
case Bytecodes.FSTORE_3:
case Bytecodes.ASTORE_3:
frame.setLocal(3, stack.pop());
break;
case Bytecodes.LSTORE_0:
case Bytecodes.DSTORE_0:
frame.setLocal(0, stack.pop2());
break;
case Bytecodes.LSTORE_1:
case Bytecodes.DSTORE_1:
frame.setLocal(1, stack.pop2());
break;
case Bytecodes.LSTORE_2:
case Bytecodes.DSTORE_2:
frame.setLocal(2, stack.pop2());
break;
case Bytecodes.LSTORE_3:
case Bytecodes.DSTORE_3:
frame.setLocal(3, stack.pop2());
break;
case Bytecodes.IASTORE:
case Bytecodes.FASTORE:
case Bytecodes.BASTORE:
case Bytecodes.CASTORE:
case Bytecodes.SASTORE:
value = stack.pop();
index = stack.pop();
array = stack.pop();
checkArrayBounds(array, index);
array[index] = value;
break;
case Bytecodes.LASTORE:
case Bytecodes.DASTORE:
value = stack.pop2();
index = stack.pop();
array = stack.pop();
checkArrayBounds(array, index);
array[index] = value;
break;
case Bytecodes.AASTORE:
value = stack.pop();
index = stack.pop();
array = stack.pop();
checkArrayBounds(array, index);
checkArrayStore(array, value);
array[index] = value;
break;
case Bytecodes.POP:
stack.pop();
break;
case Bytecodes.POP2:
stack.pop2();
break;
case Bytecodes.DUP:
stack.push(stack[stack.length - 1]);
break;
case Bytecodes.DUP_X1:
a = stack.pop();
b = stack.pop();
stack.push(a);
stack.push(b);
stack.push(a);
break;
case Bytecodes.DUP_X2:
a = stack.pop();
b = stack.pop();
c = stack.pop();
stack.push(a);
stack.push(c);
stack.push(b);
stack.push(a);
break;
case Bytecodes.DUP2:
a = stack.pop();
b = stack.pop();
stack.push(b);
stack.push(a);
stack.push(b);
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 startip:number = frame.pc - 1;
index = frame.read16();
if (op === 0xb9) {
var argsNumber = frame.read8();
var zero = frame.read8();
}
var isStatic = (op === 0xb8);
var methodInfo = cp[index];
if (methodInfo.tag) {
methodInfo = resolve(index, cp, isStatic);
if (isStatic) {
classInitCheck(methodInfo.classInfo, startip);
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;
switch (methodInfo.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.argumentSlots > 0) {
popManyInto(stack, methodInfo.argumentSlots, argArray);
} else {
frame.popArgumentsInto(methodInfo.signatureDescriptor, argArray);
}
var returnValue = fn.apply(object, argArray);
}
if (!isStatic) stack.pop();
if (!release) {
if (returnValue instanceof Promise) {
console.error("You forgot to call asyncImpl():", methodInfo.implKey);
} else if (methodInfo.getReturnKind() === Kind.Void && returnValue) {
console.error("You returned something in a void method:", methodInfo.implKey);
} else if (methodInfo.getReturnKind() !== Kind.Void && (returnValue === undefined) &&
U !== J2ME.VMState.Pausing) {
console.error("You returned undefined in a non-void method:", methodInfo.implKey);
} else if (typeof returnValue === "string") {
console.error("You returned a non-wrapped string:", methodInfo.implKey);
} else if (returnValue === true || returnValue === false) {
console.error("You returned a JS boolean:", methodInfo.implKey);
}
}
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 shouldReturn = popFrame(0);
if (shouldReturn) {
return returnValue;
}
break;
case Bytecodes.IRETURN:
case Bytecodes.FRETURN:
case Bytecodes.ARETURN:
var shouldReturn = popFrame(1);
if (shouldReturn) {
return returnValue;
}
break;
case Bytecodes.LRETURN:
case Bytecodes.DRETURN:
var shouldReturn = popFrame(2);
if (shouldReturn) {
return returnValue;
}
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);
}
throw_(e, ctx);
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;