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int.ts
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module J2ME {
import assert = Debug.assert;
import Bytecodes = Bytecode.Bytecodes;
import toHEX = IntegerUtilities.toHEX;
function toName(o) {
if (o instanceof MethodInfo) {
return "MI: " + o.implKey;
}
function getArrayInfo(o) {
var s = [];
var x = [];
for (var i = 0; i < Math.min(o.length, 8); i++) {
s.push(o[i]);
x.push(String.fromCharCode(o[i]));
}
var suffix = (o.length > 8 ? "..." : "");
return fromUTF8(o.klass.classInfo.utf8Name) +
", length: " + o.length +
", values: [" + s.join(", ") + suffix + "]" +
", chars: \"" + x.join("") + suffix + "\"";
}
function getObjectInfo(o) {
if (o.length !== undefined) {
return getArrayInfo(o);
}
return fromUTF8(o.klass.classInfo.utf8Name) + (o._address ? " " + toHEX(o._address) : "");
}
if (o && !o.klass) {
return o;
}
if (o && o.klass === Klasses.java.lang.Class) {
return "[" + getObjectInfo(o) + "] " + o.runtimeKlass.templateKlass.classInfo.getClassNameSlow();
}
if (o && o.klass === Klasses.java.lang.String) {
return "[" + getObjectInfo(o) + "] \"" + fromJavaString(o) + "\"";
}
return o ? ("[" + getObjectInfo(o) + "]") : "null";
}
/**
* The number of opcodes executed thus far.
*/
export var bytecodeCount = 0;
/**
* The number of times the interpreter method was called thus far.
*/
export var interpreterCount = 0;
export var onStackReplacementCount = 0;
/**
* The closest floating-point representation to this long value.
*/
export function longToNumber(l: number, h: number): number {
return h * Constants.TWO_PWR_32_DBL + ((l >= 0) ? l : Constants.TWO_PWR_32_DBL + l);
}
export function numberToLong(v: number): number {
// TODO Extract logic from Long so we don't allocate here.
var long = Long.fromNumber(v);
tempReturn0 = long.high_;
return long.low_;
}
function wordsToDouble(l: number, h: number): number {
aliasedI32[0] = l;
aliasedI32[1] = h;
return aliasedF64[0];
}
/**
* Calling Convention:
*
* Interpreter -> Interpreter:
* This follows the JVM bytecode calling convention. This interpreter is highly
* optimized for this calling convention.
*
* Compiled / Native -> Compiled / Native:
* 64-bit floats and single word values can be encoded using only one JS value. However, 64-bit longs cannot and
* require a (low, high) JS value pair. For example, the signature: "foo.(IDJi)J" is expressed as:
*
* function foo(i, d, lowBits, highBits, i) {
* return tempReturn0 = highBits, lowBits;
* }
*
* Returning longs is equally problamatic, the convention is to return the lowBits, and save the highBits in a
* global |tempReturn0| variable.
*/
/*
* Stack Frame Layout:
*
* LP ---> +--------------------------------+
* | Parameter 0 |
* +--------------------------------+
* | ... |
* +--------------------------------+
* | Parameter (P-1) |
* +--------------------------------+
* | Non-Parameter Local 0 |
* +--------------------------------+
* | ... |
* +--------------------------------+
* | Non-Parameter Local (L-1) |
* FP ---> +--------------------------------+
* | Caller Return Address | // The opPC of the caller's invoke bytecode.
* +--------------------------------+
* | Caller FP |
* +--------------------------------+
* | Callee Method Info |
* +--------------------------------+
* | Monitor |
* +--------------------------------+
* | Stack slot 0 |
* +--------------------------------+
* | ... |
* +--------------------------------+
* | Stack slot (S-1) |
* SP ---> +--------------------------------+
*/
enum FrameLayout {
CalleeMethodInfoOffset = 2,
CallerFPOffset = 1,
CallerRAOffset = 0,
MonitorOffset = 3,
CallerSaveSize = 4
}
export class FrameView {
public fp: number;
public sp: number;
public pc: number;
constructor() {
}
set(fp: number, sp: number, pc: number) {
this.fp = fp;
this.sp = sp;
this.pc = pc;
if (!release) {
var callee = ref[this.fp + FrameLayout.CalleeMethodInfoOffset];
assert(
callee === null ||
callee instanceof MethodInfo,
"Callee @" + (this.fp + FrameLayout.CalleeMethodInfoOffset) + " is not a MethodInfo, " + toName(callee)
);
}
}
setParameter(kind: Kind, i: number, v: any) {
switch (kind) {
case Kind.Reference:
ref[this.fp + this.parameterOffset + i] = v;
break;
case Kind.Int:
i32[this.fp + this.parameterOffset + i] = v;
break;
default:
release || assert(false, "Cannot set parameter of kind: " + Kind[kind]);
}
}
get methodInfo(): MethodInfo {
return ref[this.fp + FrameLayout.CalleeMethodInfoOffset];
}
set methodInfo(methodInfo: MethodInfo) {
ref[this.fp + FrameLayout.CalleeMethodInfoOffset] = methodInfo;
}
set monitor(object: java.lang.Object) {
ref[this.fp + FrameLayout.MonitorOffset] = object;
}
get monitor(): java.lang.Object {
return ref[this.fp + FrameLayout.MonitorOffset];
}
get parameterOffset() {
return this.methodInfo ? -this.methodInfo.codeAttribute.max_locals : 0;
}
get stackOffset(): number {
return FrameLayout.CallerSaveSize;
}
traceStack(writer: IndentingWriter) {
var fp = this.fp;
var sp = this.sp;
var pc = this.pc;
while (this.fp > FrameLayout.CallerSaveSize) {
writer.writeLn((this.methodInfo ? this.methodInfo.implKey : "null") + ", FP: " + this.fp + ", SP: " + this.sp + ", PC: " + this.pc);
this.set(i32[this.fp + FrameLayout.CallerFPOffset],
this.fp + this.parameterOffset,
i32[this.fp + FrameLayout.CallerRAOffset]);
}
this.fp = fp;
this.sp = sp;
this.pc = pc;
}
trace(writer: IndentingWriter) {
function toNumber(v) {
if (v < 0) {
return String(v);
} else if (v === 0) {
return " 0";
} else {
return "+" + v;
}
}
function clampString(v, n) {
if (v.length > n) {
return v.substring(0, n - 3) + "...";
}
return v;
}
writer.writeLn("Frame: " + this.methodInfo.implKey + ", FP: " + this.fp + ", SP: " + this.sp + ", PC: " + this.pc);
for (var i = Math.max(0, this.fp + this.parameterOffset); i < this.sp; i++) {
var prefix = " ";
if (i >= this.fp + this.stackOffset) {
prefix = "S" + (i - (this.fp + this.stackOffset)) + ": ";
} else if (i === this.fp + FrameLayout.CalleeMethodInfoOffset) {
prefix = "MI: ";
} else if (i === this.fp + FrameLayout.CallerFPOffset) {
prefix = "CF: ";
} else if (i === this.fp + FrameLayout.CallerRAOffset) {
prefix = "RA: ";
} else if (i >= this.fp + this.parameterOffset) {
prefix = "L" + (i - (this.fp + this.parameterOffset)) + ": ";
}
writer.writeLn(" " + prefix.padRight(' ', 5) + " " + toNumber(i - this.fp).padLeft(' ', 3) + " " + String(i).padLeft(' ', 4) + " " + toHEX(i << 2) + ": " +
String(i32[i]).padLeft(' ', 12) + " " +
toHEX(i32[i]) + " " +
((i32[i] >= 32 && i32[i] < 1024) ? String.fromCharCode(i32[i]) : "?") + " " +
clampString(String(f32[i]), 12).padLeft(' ', 12) + " " +
clampString(String(wordsToDouble(i32[i], i32[i + 1])), 12).padLeft(' ', 12) + " " +
toName(ref[i]));
}
}
}
export var interpreterCounter = new Metrics.Counter(true);
export class Thread {
/**
* Thread base pointer.
*/
tp: number;
/**
* Stack base pointer.
*/
bp: number
/**
* Current frame pointer.
*/
fp: number
/**
* Current stack pointer.
*/
sp: number
/**
* Current program counter.
*/
pc: number
/**
* Context associated with this thread.
*/
ctx: Context;
view: FrameView;
constructor(ctx: Context) {
this.tp = ASM._gcMalloc(1024 * 128);
this.bp = this.tp;
this.fp = this.bp;
this.sp = this.fp;
this.pc = -1;
this.view = new FrameView();
this.ctx = ctx;
release || threadWriter && threadWriter.writeLn("creatingThread: tp: " + toHEX(this.tp << 2) + " " + toHEX(i32.byteLength));
}
set(fp: number, sp: number, pc: number) {
this.fp = fp;
this.sp = sp;
this.pc = pc;
}
hashFrame(): number {
var fp = this.fp << 2;
var sp = this.sp << 2;
return HashUtilities.hashBytesTo32BitsAdler(u8, fp, sp);
}
/**
* Advances the |pc| to the next |pc| after the current invoke bytecode.
*/
advancePastInvokeBytecode() {
var mi = ref[this.fp + FrameLayout.CalleeMethodInfoOffset];
var code = mi.codeAttribute.code;
var op = code[this.pc];
release || assert(Bytecode.isInvoke(op), "The PC should be at an invoke bytecode.");
this.pc += (op === Bytecodes.INVOKEINTERFACE ? 5 : 3);
}
get frame(): FrameView {
this.view.set(this.fp, this.sp, this.pc);
return this.view;
}
pushFrame(methodInfo: MethodInfo) {
var fp = this.fp;
if (methodInfo) {
this.fp = this.sp + methodInfo.codeAttribute.max_locals;
} else {
this.fp = this.sp;
}
i32[this.fp + FrameLayout.CallerRAOffset] = this.pc; // Caller RA
i32[this.fp + FrameLayout.CallerFPOffset] = fp; // Caller FP
ref[this.fp + FrameLayout.CalleeMethodInfoOffset] = methodInfo; // Callee
ref[this.fp + FrameLayout.MonitorOffset] = null; // Monitor
this.sp = this.fp + FrameLayout.CallerSaveSize;
this.pc = 0;
}
popFrame(methodInfo: MethodInfo): MethodInfo {
var mi = ref[this.fp + FrameLayout.CalleeMethodInfoOffset];
release || assert(mi === methodInfo);
this.pc = i32[this.fp + FrameLayout.CallerRAOffset];
var maxLocals = mi ? mi.codeAttribute.max_locals : 0;
this.sp = this.fp - maxLocals;
this.fp = i32[this.fp + FrameLayout.CallerFPOffset];
return ref[this.fp + FrameLayout.CalleeMethodInfoOffset];
}
run() {
return interpret(this);
}
exceptionUnwind(e: java.lang.Exception) {
release || traceWriter && traceWriter.writeLn("exceptionUnwind: " + toName(e));
var pc = -1;
var classInfo;
var mi = ref[this.fp + FrameLayout.CalleeMethodInfoOffset];
while (mi) {
release || traceWriter && traceWriter.writeLn("Looking for handler in: " + mi.implKey);
for (var i = 0; i < mi.exception_table_length; i++) {
var exceptionEntryView = mi.getExceptionEntryViewByIndex(i);
release || traceWriter && traceWriter.writeLn("Checking catch range: " + exceptionEntryView.start_pc + " - " + exceptionEntryView.end_pc);
if (this.pc >= exceptionEntryView.start_pc && this.pc < exceptionEntryView.end_pc) {
if (exceptionEntryView.catch_type === 0) {
pc = exceptionEntryView.handler_pc;
break;
} else {
classInfo = resolveClass(exceptionEntryView.catch_type, mi.classInfo);
release || traceWriter && traceWriter.writeLn("Checking catch type: " + classInfo.klass);
if (isAssignableTo(e.klass, classInfo.klass)) {
pc = exceptionEntryView.handler_pc;
break;
}
}
}
}
if (pc >= 0) {
this.pc = pc;
this.sp = this.fp + FrameLayout.CallerSaveSize;
ref[this.sp++] = e;
return;
}
if (mi.isSynchronized) {
this.ctx.monitorExit(ref[this.fp + FrameLayout.MonitorOffset]);
}
mi = this.popFrame(mi);
release || traceWriter && traceWriter.outdent();
release || traceWriter && traceWriter.writeLn("<< I Unwind");
}
release || traceWriter && traceWriter.writeLn("Cannot catch: " + toName(e));
throw e;
}
classInitAndUnwindCheck(fp: number, sp: number, pc: number, classInfo: ClassInfo) {
this.set(fp, sp, pc);
classInitCheck(classInfo);
}
throwException(fp: number, sp: number, pc: number, type: ExceptionType, a?) {
this.set(fp, sp, pc);
switch (type) {
case ExceptionType.ArrayIndexOutOfBoundsException:
throwArrayIndexOutOfBoundsException(a);
break;
case ExceptionType.ArithmeticException:
throwArithmeticException();
break;
case ExceptionType.NegativeArraySizeException:
throwNegativeArraySizeException();
break;
case ExceptionType.NullPointerException:
throwNullPointerException();
break;
}
}
}
export function prepareInterpretedMethod(methodInfo: MethodInfo): Function {
var method = function fastInterpreterFrameAdapter() {
var thread = $.ctx.nativeThread;
var callerFP = thread.fp;
var callerPC = thread.pc;
// release || traceWriter && traceWriter.writeLn(">> I");
thread.pushFrame(null);
thread.pushFrame(methodInfo);
var calleeFP = thread.fp;
var frame = thread.frame;
var kinds = methodInfo.signatureKinds;
var index = 0;
if (!methodInfo.isStatic) {
frame.setParameter(Kind.Reference, index++, this);
}
for (var i = 1; i < kinds.length; i++) {
frame.setParameter(kinds[i], index++, arguments[i - 1]);
}
if (methodInfo.isSynchronized) {
var monitor = methodInfo.isStatic
? methodInfo.classInfo.getClassObject()
: this;
frame.monitor = monitor;
$.ctx.monitorEnter(monitor);
release || assert(U !== VMState.Yielding, "Monitors should never yield.");
if (U === VMState.Pausing || U === VMState.Stopping) {
return;
}
}
var v = interpret(thread);
if (U) {
release || assert(v === undefined, "Return value must be undefined.");
// Splice out the marker frame so the interpreter doesn't return early when execution is resumed.
i32[calleeFP + FrameLayout.CallerFPOffset] = callerFP;
i32[calleeFP + FrameLayout.CallerRAOffset] = callerPC;
return;
}
release || assert(callerFP === thread.fp);
// release || traceWriter && traceWriter.writeLn("<< I");
return v;
};
(<any>method).methodInfo = methodInfo;
return method;
}
function resolveClass(index: number, classInfo: ClassInfo): ClassInfo {
var classInfo = classInfo.constantPool.resolveClass(index);
linkKlass(classInfo);
return classInfo;
}
var args = new Array(16);
export enum ExceptionType {
ArithmeticException,
ArrayIndexOutOfBoundsException,
NegativeArraySizeException,
NullPointerException
}
/**
* Debugging helper to make sure native methods were implemented correctly.
*/
function checkReturnValue(methodInfo: MethodInfo, l: any, h: number) {
if (U) {
if (typeof l !== "undefined") {
assert(false, "Expected undefined return value during unwind, got " + l + " in " + methodInfo.implKey);
}
return;
}
if (!(getKindCheck(methodInfo.returnKind)(l, h))) {
assert(false, "Expected " + Kind[methodInfo.returnKind] + " return value, got " + l + " in " + methodInfo.implKey);
}
}
/**
* Main interpreter loop. This method is carefully written to avoid memory allocation and
* function calls on fast paths. Therefore, everything is inlined, even if it makes the code
* look ugly.
*
* The interpreter loop caches the thread state in local variables. Doing so avoids a lot of
* property accesses but also makes the code brittle since you need to manually sync up the
* thread state with the local thead state at precise points.
*
* At call sites, caller frame |pc|s are always at the beggining of invoke bytecodes. In the
* interpreter return bytecodes advance the pc past the invoke bytecode. Native code that
* unwinds and resumes execution at a later point needs to adjust the pc accordingly.
*
* Bytecodes that construct exception objects must save the tread state before executing any
* code that may overwrite the frame. Use the |throwException| helper method to ensure that
* the thread state is property saved.
*/
export function interpret(thread: Thread) {
var frame = thread.frame;
var mi = frame.methodInfo;
var maxLocals = mi.codeAttribute.max_locals;
var ci = mi.classInfo;
var cp = ci.constantPool;
var code = mi ? mi.codeAttribute.code : null;
var fp = thread.fp;
var lp = fp - maxLocals;
var sp = thread.sp;
var opPC = 0, pc = thread.pc;
var tag: TAGS;
var type, size;
var value, index, array, object, returnValue, constant, offset, buffer, tag: TAGS, targetPC, kind;
var address = 0, isStatic = false;
var ia = 0, ib = 0; // Integer Operands
var ll = 0, lh = 0; // Long Low / High
var fa = 0, fb = 0; // Float / Double Operands
var classInfo: ClassInfo;
var fieldInfo: FieldInfo;
var monitor: java.lang.Object;
// HEAD
while (true) {
opPC = pc, op = code[pc++];
if (!release) {
assert(code === mi.codeAttribute.code, "Bad Code.");
assert(ci === mi.classInfo, "Bad Class Info.");
assert(cp === ci.constantPool, "Bad Constant Pool.");
assert(lp === fp - mi.codeAttribute.max_locals, "Bad lp.");
bytecodeCount++;
if (traceStackWriter) {
frame.set(fp, sp, opPC); frame.trace(traceStackWriter);
traceStackWriter.writeLn();
traceStackWriter.greenLn(mi.implKey + ": PC: " + opPC + ", FP: " + fp + ", " + Bytecodes[op]);
}
}
try {
switch (op) {
case Bytecodes.NOP:
continue;
case Bytecodes.ACONST_NULL:
ref[sp++] = null;
continue;
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:
i32[sp++] = op - Bytecodes.ICONST_0;
continue;
case Bytecodes.FCONST_0:
case Bytecodes.FCONST_1:
case Bytecodes.FCONST_2:
f32[sp++] = op - Bytecodes.FCONST_0;
continue;
case Bytecodes.DCONST_0:
i32[sp++] = 0;
i32[sp++] = 0;
continue;
case Bytecodes.DCONST_1:
i32[sp++] = 0;
i32[sp++] = 1072693248;
continue;
case Bytecodes.LCONST_0:
case Bytecodes.LCONST_1:
i32[sp++] = op - Bytecodes.LCONST_0;
i32[sp++] = 0;
continue;
case Bytecodes.BIPUSH:
i32[sp++] = code[pc++] << 24 >> 24;
continue;
case Bytecodes.SIPUSH:
i32[sp++] = (code[pc++] << 8 | code[pc++]) << 16 >> 16;
continue;
case Bytecodes.LDC:
case Bytecodes.LDC_W:
index = (op === Bytecodes.LDC) ? code[pc++] : code[pc++] << 8 | code[pc++];
offset = cp.entries[index];
buffer = cp.buffer;
tag = buffer[offset++];
if (tag === TAGS.CONSTANT_Integer || tag === TAGS.CONSTANT_Float) {
i32[sp++] = buffer[offset++] << 24 | buffer[offset++] << 16 | buffer[offset++] << 8 | buffer[offset++];
} else if (tag === TAGS.CONSTANT_String) {
ref[sp++] = constant = ci.constantPool.resolve(index, tag, false);;
} else {
release || assert(false, TAGS[tag]);
}
continue;
case Bytecodes.LDC2_W:
index = code[pc++] << 8 | code[pc++];
offset = cp.entries[index];
buffer = cp.buffer;
tag = buffer[offset++];
if (tag === TAGS.CONSTANT_Long || tag === TAGS.CONSTANT_Double) {
i32[sp + 1] = buffer[offset++] << 24 | buffer[offset++] << 16 | buffer[offset++] << 8 | buffer[offset++];
i32[sp ] = buffer[offset++] << 24 | buffer[offset++] << 16 | buffer[offset++] << 8 | buffer[offset++];
sp += 2;
} else {
release || assert(false, TAGS[tag]);
}
continue;
case Bytecodes.ILOAD:
case Bytecodes.FLOAD:
i32[sp++] = i32[lp + code[pc++]];
continue;
case Bytecodes.ALOAD:
ref[sp++] = ref[lp + code[pc++]];
continue;
case Bytecodes.LLOAD:
case Bytecodes.DLOAD:
offset = lp + code[pc++];
i32[sp++] = i32[offset];
i32[sp++] = i32[offset + 1];
continue;
case Bytecodes.ILOAD_0:
case Bytecodes.ILOAD_1:
case Bytecodes.ILOAD_2:
case Bytecodes.ILOAD_3:
i32[sp++] = i32[lp + op - Bytecodes.ILOAD_0];
continue;
case Bytecodes.FLOAD_0:
case Bytecodes.FLOAD_1:
case Bytecodes.FLOAD_2:
case Bytecodes.FLOAD_3:
i32[sp++] = i32[lp + op - Bytecodes.FLOAD_0];
continue;
case Bytecodes.ALOAD_0:
ref[sp++] = ref[lp];
continue;
case Bytecodes.ALOAD_1:
case Bytecodes.ALOAD_2:
case Bytecodes.ALOAD_3:
ref[sp++] = ref[lp + op - Bytecodes.ALOAD_0];
continue;
case Bytecodes.LLOAD_0:
case Bytecodes.LLOAD_1:
case Bytecodes.LLOAD_2:
case Bytecodes.LLOAD_3:
offset = lp + op - Bytecodes.LLOAD_0;
i32[sp++] = i32[offset];
i32[sp++] = i32[offset + 1];
continue;
case Bytecodes.DLOAD_0:
case Bytecodes.DLOAD_1:
case Bytecodes.DLOAD_2:
case Bytecodes.DLOAD_3:
offset = lp + op - Bytecodes.DLOAD_0;
i32[sp++] = i32[offset];
i32[sp++] = i32[offset + 1];
continue;
case Bytecodes.IALOAD:
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
i32[sp++] = array[index];
continue;
case Bytecodes.BALOAD:
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
i32[sp++] = array[index];
continue;
case Bytecodes.CALOAD:
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
i32[sp++] = array[index];
continue;
case Bytecodes.SALOAD:
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
i32[sp++] = array[index];
continue;
case Bytecodes.FALOAD:
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
f32[sp++] = array[index];
continue;
case Bytecodes.AALOAD:
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
ref[sp++] = array[index];
continue;
case Bytecodes.DALOAD:
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
aliasedF64[0] = array[index];
i32[sp++] = aliasedI32[0];
i32[sp++] = aliasedI32[1];
continue;
case Bytecodes.ISTORE:
case Bytecodes.FSTORE:
i32[lp + code[pc++]] = i32[--sp];
continue;
case Bytecodes.ASTORE:
ref[lp + code[pc++]] = ref[--sp];
continue;
case Bytecodes.LSTORE:
case Bytecodes.DSTORE:
offset = lp + code[pc++];
i32[offset + 1] = i32[--sp];
i32[offset] = i32[--sp];
continue;
case Bytecodes.ISTORE_0:
case Bytecodes.ISTORE_1:
case Bytecodes.ISTORE_2:
case Bytecodes.ISTORE_3:
i32[lp + op - Bytecodes.ISTORE_0] = i32[--sp];
continue;
case Bytecodes.FSTORE_0:
case Bytecodes.FSTORE_1:
case Bytecodes.FSTORE_2:
case Bytecodes.FSTORE_3:
i32[lp + op - Bytecodes.FSTORE_0] = i32[--sp];
continue;
case Bytecodes.ASTORE_0:
case Bytecodes.ASTORE_1:
case Bytecodes.ASTORE_2:
case Bytecodes.ASTORE_3:
ref[lp + op - Bytecodes.ASTORE_0] = ref[--sp];
continue;
case Bytecodes.LSTORE_0:
case Bytecodes.LSTORE_1:
case Bytecodes.LSTORE_2:
case Bytecodes.LSTORE_3:
offset = lp + op - Bytecodes.LSTORE_0;
i32[offset + 1] = i32[--sp];
i32[offset] = i32[--sp];
continue;
case Bytecodes.DSTORE_0:
case Bytecodes.DSTORE_1:
case Bytecodes.DSTORE_2:
case Bytecodes.DSTORE_3:
offset = lp + op - Bytecodes.DSTORE_0;
i32[offset + 1] = i32[--sp];
i32[offset] = i32[--sp];
continue;
case Bytecodes.IASTORE:
value = i32[--sp];
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
array[index] = value;
continue;
case Bytecodes.FASTORE:
value = f32[--sp];
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
array[index] = value;
continue;
case Bytecodes.BASTORE:
value = i32[--sp];
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
array[index] = value;
continue;
case Bytecodes.CASTORE:
value = i32[--sp];
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
array[index] = value;
continue;
case Bytecodes.SASTORE:
value = i32[--sp];
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
array[index] = value;
continue;
case Bytecodes.LASTORE:
lh = i32[--sp];
ll = i32[--sp];
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
array.value[index * 2 ] = ll;
array.value[index * 2 + 1] = lh;
continue;
case Bytecodes.LALOAD:
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
i32[sp++] = array.value[index * 2 ];
i32[sp++] = array.value[index * 2 + 1];
continue;
case Bytecodes.DASTORE:
aliasedI32[1] = i32[--sp];
aliasedI32[0] = i32[--sp];
value = aliasedF64[0];
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
array[index] = value;
continue;
case Bytecodes.AASTORE:
value = ref[--sp];
index = i32[--sp];
array = ref[--sp];
if ((index >>> 0) >= (array.length >>> 0)) {
thread.throwException(fp, sp, opPC, ExceptionType.ArrayIndexOutOfBoundsException, index);
}
checkArrayStore(array, value);
array[index] = value;
continue;
case Bytecodes.POP:
--sp;
continue;
case Bytecodes.POP2:
sp -= 2;
continue;
case Bytecodes.DUP: // ... a -> ... a, a
i32[sp] = i32[sp - 1]; ref[sp] = ref[sp - 1];
sp++;
continue;
case Bytecodes.DUP2: // ... b, a -> ... b, a, b, a
i32[sp ] = i32[sp - 2]; ref[sp ] = ref[sp - 2]; // b
i32[sp + 1] = i32[sp - 1]; ref[sp + 1] = ref[sp - 1]; // a
sp += 2;
continue;
case Bytecodes.DUP_X1: // ... b, a -> ... a, b, a
i32[sp ] = i32[sp - 1]; ref[sp ] = ref[sp - 1]; // a
i32[sp - 1] = i32[sp - 2]; ref[sp - 1] = ref[sp - 2]; // b
i32[sp - 2] = i32[sp]; ref[sp - 2] = ref[sp]; // a
sp++;
continue;
case Bytecodes.DUP_X2: // ... c, b, a -> ... a, c, b, a
i32[sp ] = i32[sp - 1]; ref[sp ] = ref[sp - 1]; // a
i32[sp - 1] = i32[sp - 2]; ref[sp - 1] = ref[sp - 2]; // b
i32[sp - 2] = i32[sp - 3]; ref[sp - 2] = ref[sp - 3]; // c
i32[sp - 3] = i32[sp]; ref[sp - 3] = ref[sp]; // a
sp++;
continue;
case Bytecodes.DUP2_X1: // ... c, b, a -> ... b, a, c, b, a
i32[sp + 1] = i32[sp - 1]; ref[sp + 1] = ref[sp - 1]; // a
i32[sp ] = i32[sp - 2]; ref[sp ] = ref[sp - 2]; // b
i32[sp - 1] = i32[sp - 3]; ref[sp - 1] = ref[sp - 3]; // c
i32[sp - 2] = i32[sp + 1]; ref[sp - 2] = ref[sp + 1]; // a
i32[sp - 3] = i32[sp ]; ref[sp - 3] = ref[sp ]; // b
sp += 2;
continue;
case Bytecodes.DUP2_X2: // ... d, c, b, a -> ... b, a, d, c, b, a
i32[sp + 1] = i32[sp - 1]; ref[sp + 1] = ref[sp - 1]; // a
i32[sp ] = i32[sp - 2]; ref[sp ] = ref[sp - 2]; // b
i32[sp - 1] = i32[sp - 3]; ref[sp - 1] = ref[sp - 3]; // c
i32[sp - 2] = i32[sp - 4]; ref[sp - 2] = ref[sp - 4]; // d
i32[sp - 3] = i32[sp + 1]; ref[sp - 3] = ref[sp + 1]; // a
i32[sp - 4] = i32[sp ]; ref[sp - 4] = ref[sp ]; // b
sp += 2;
continue;
case Bytecodes.SWAP:
ia = i32[sp - 1]; object = ref[sp - 1];
i32[sp - 1] = i32[sp - 2]; ref[sp - 1] = ref[sp - 2];
i32[sp - 2] = ia; ref[sp - 2] = object;
continue;
case Bytecodes.IINC:
index = code[pc++];
value = code[pc++] << 24 >> 24;
i32[lp + index] = i32[lp + index] + value | 0;
continue;
case Bytecodes.IADD:
i32[sp - 2] = (i32[sp - 2] + i32[sp - 1]) | 0; sp--;
continue;
case Bytecodes.LADD:
ASM._lAdd(sp - 4 << 2, sp - 4 << 2, sp - 2 << 2); sp -= 2;
continue;
case Bytecodes.FADD:
f32[sp - 2] = f32[sp - 2] + f32[sp - 1]; sp--;
continue;
case Bytecodes.DADD:
aliasedI32[0] = i32[sp - 4];
aliasedI32[1] = i32[sp - 3]; ia = aliasedF64[0];
aliasedI32[0] = i32[sp - 2];
aliasedI32[1] = i32[sp - 1]; ib = aliasedF64[0];
aliasedF64[0] = ia + ib;
i32[sp - 4] = aliasedI32[0];
i32[sp - 3] = aliasedI32[1];
sp -= 2;
continue;
case Bytecodes.ISUB:
i32[sp - 2] = (i32[sp - 2] - i32[sp - 1]) | 0; sp--;
continue;
case Bytecodes.LSUB:
ASM._lSub(sp - 4 << 2, sp - 4 << 2, sp - 2 << 2); sp -= 2;
continue;
case Bytecodes.FSUB:
f32[sp - 2] = f32[sp - 2] - f32[sp - 1]; sp--;
continue;
case Bytecodes.DSUB:
aliasedI32[0] = i32[sp - 4];
aliasedI32[1] = i32[sp - 3]; ia = aliasedF64[0];
aliasedI32[0] = i32[sp - 2];
aliasedI32[1] = i32[sp - 1]; ib = aliasedF64[0];
aliasedF64[0] = ia - ib;
i32[sp - 4] = aliasedI32[0];
i32[sp - 3] = aliasedI32[1];
sp -= 2;
continue;
case Bytecodes.IMUL:
i32[sp - 2] = Math.imul(i32[sp - 2], i32[sp - 1]) | 0; sp--;
continue;
case Bytecodes.LMUL:
ASM._lMul(sp - 4 << 2, sp - 4 << 2, sp - 2 << 2); sp -= 2;
continue;
case Bytecodes.FMUL:
f32[sp - 2] = f32[sp - 2] * f32[sp - 1]; sp--;
continue;
case Bytecodes.DMUL:
aliasedI32[0] = i32[sp - 4];
aliasedI32[1] = i32[sp - 3]; ia = aliasedF64[0];
aliasedI32[0] = i32[sp - 2];
aliasedI32[1] = i32[sp - 1]; ib = aliasedF64[0];
aliasedF64[0] = ia * ib;
i32[sp - 4] = aliasedI32[0];
i32[sp - 3] = aliasedI32[1];
sp -= 2;
continue;
case Bytecodes.IDIV:
if (i32[sp - 1] === 0) {
thread.throwException(fp, sp, opPC, ExceptionType.ArithmeticException);
}
ia = i32[sp - 2];
ib = i32[sp - 1];
i32[sp - 2] = (ia === Constants.INT_MIN && ib === -1) ? ia : ((ia / ib) | 0); sp--;
continue;
case Bytecodes.LDIV:
if (i32[sp - 2] === 0 && i32[sp - 1] === 0) {
thread.throwException(fp, sp, opPC, ExceptionType.ArithmeticException);
}
ASM._lDiv(sp - 4 << 2, sp - 4 << 2, sp - 2 << 2); sp -= 2;
continue;
case Bytecodes.FDIV:
fb = f32[--sp];
fa = f32[--sp];
f32[sp++] = Math.fround(fa / fb);
continue;
case Bytecodes.DDIV:
aliasedI32[0] = i32[sp - 4];
aliasedI32[1] = i32[sp - 3]; ia = aliasedF64[0];