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wasm gc: fix bugs with Class

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This commit is contained in:
Alexey Andreev 2024-09-11 20:07:05 +02:00
parent d12637f959
commit eccfaff889
12 changed files with 114 additions and 31 deletions
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11
classlib/src/main/java/org/teavm/classlib/java/lang/TClass.java
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@ -46,9 +46,7 @@ import org.teavm.dependency.PluggableDependency;
import org.teavm.interop.Address;
import org.teavm.interop.DelegateTo;
import org.teavm.interop.NoSideEffects;
import org.teavm.interop.Platforms;
import org.teavm.interop.Unmanaged;
import org.teavm.interop.UnsupportedOn;
import org.teavm.jso.core.JSArray;
import org.teavm.platform.Platform;
import org.teavm.platform.PlatformClass;
@ -101,8 +99,10 @@ public final class TClass<T> extends TObject implements TAnnotatedElement, TType
}
@DelegateTo("isInstanceLowLevel")
@UnsupportedOn(Platforms.WEBASSEMBLY_GC)
public boolean isInstance(TObject obj) {
if (PlatformDetector.isWebAssemblyGC()) {
return obj != null && isAssignableFrom((TClass<?>) (Object) obj.getClass());
}
return Platform.isInstance(Platform.getPlatformObject(obj), platformClass);
}
@ -112,7 +112,6 @@ public final class TClass<T> extends TObject implements TAnnotatedElement, TType
}
@DelegateTo("isAssignableFromLowLevel")
@UnsupportedOn(Platforms.WEBASSEMBLY_GC)
public boolean isAssignableFrom(TClass<?> obj) {
return Platform.isAssignable(obj.getPlatformClass(), platformClass);
}
@ -268,7 +267,9 @@ public final class TClass<T> extends TObject implements TAnnotatedElement, TType
}
private boolean isSynthetic() {
if (PlatformDetector.isJavaScript()) {
if (PlatformDetector.isWebAssemblyGC()) {
return (getWasmGCFlags() & WasmGCClassFlags.SYNTHETIC) != 0;
} else if (PlatformDetector.isJavaScript()) {
return (platformClass.getMetadata().getAccessLevel() & Flags.SYNTHETIC) != 0;
} else {
return (RuntimeClass.getClass(Address.ofObject(this).toStructure()).flags & RuntimeClass.SYNTHETIC) != 0;

4
core/src/main/java/org/teavm/backend/wasm/generate/common/methods/BaseWasmGenerationVisitor.java
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@ -92,6 +92,8 @@ import org.teavm.backend.wasm.model.expression.WasmInt64Constant;
import org.teavm.backend.wasm.model.expression.WasmIntBinary;
import org.teavm.backend.wasm.model.expression.WasmIntBinaryOperation;
import org.teavm.backend.wasm.model.expression.WasmIntType;
import org.teavm.backend.wasm.model.expression.WasmIntUnary;
import org.teavm.backend.wasm.model.expression.WasmIntUnaryOperation;
import org.teavm.backend.wasm.model.expression.WasmReturn;
import org.teavm.backend.wasm.model.expression.WasmSetLocal;
import org.teavm.backend.wasm.model.expression.WasmSwitch;
@ -1446,7 +1448,7 @@ public abstract class BaseWasmGenerationVisitor implements StatementVisitor, Exp
}
}
var result = new WasmIntBinary(WasmIntType.INT32, WasmIntBinaryOperation.EQ, expr, new WasmInt32Constant(0));
var result = new WasmIntUnary(WasmIntType.INT32, WasmIntUnaryOperation.EQZ, expr);
result.setLocation(expr.getLocation());
return result;
}

24
core/src/main/java/org/teavm/backend/wasm/generate/gc/classes/WasmGCClassGenerator.java
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@ -129,12 +129,14 @@ public class WasmGCClassGenerator implements WasmGCClassInfoProvider, WasmGCInit
private int classFlagsOffset;
private int classNameOffset;
private int classSimpleNameOffset;
private int classCanonicalNameOffset;
private int classParentOffset;
private int classArrayOffset;
private int classArrayItemOffset;
private int classNewArrayOffset;
private int classSupertypeFunctionOffset;
private int classEnclosingClassOffset;
private int classDeclaringClassOffset;
private int virtualTableFieldOffset;
private int enumConstantsFunctionOffset;
private int arrayLengthOffset = -1;
@ -380,6 +382,12 @@ public class WasmGCClassGenerator implements WasmGCClassInfoProvider, WasmGCInit
return classEnclosingClassOffset;
}
@Override
public int getClassDeclaringClassOffset() {
standardClasses.classClass().getStructure().init();
return classDeclaringClassOffset;
}
@Override
public int getClassParentOffset() {
standardClasses.classClass().getStructure().init();
@ -398,6 +406,12 @@ public class WasmGCClassGenerator implements WasmGCClassInfoProvider, WasmGCInit
return classSimpleNameOffset;
}
@Override
public int getClassCanonicalNameOffset() {
standardClasses.classClass().getStructure().init();
return classCanonicalNameOffset;
}
@Override
public int getNewArrayFunctionOffset() {
standardClasses.classClass().getStructure().init();
@ -498,10 +512,14 @@ public class WasmGCClassGenerator implements WasmGCClassInfoProvider, WasmGCInit
var parent = getClassInfo(cls.getParent());
target.add(setClassField(classInfo, classParentOffset, new WasmGetGlobal(parent.pointer)));
}
if (cls.getOwnerName() != null && metadataReq.superclass()) {
if (cls.getOwnerName() != null && metadataReq.enclosingClass()) {
var owner = getClassInfo(cls.getOwnerName());
target.add(setClassField(classInfo, classEnclosingClassOffset, new WasmGetGlobal(owner.pointer)));
}
if (cls.getDeclaringClassName() != null && metadataReq.declaringClass()) {
var owner = getClassInfo(cls.getDeclaringClassName());
target.add(setClassField(classInfo, classDeclaringClassOffset, new WasmGetGlobal(owner.pointer)));
}
if (metadataReq.cloneMethod()) {
WasmFunction cloneFunction;
if (hierarchy.isSuperType("java.lang.Cloneable", name, false)) {
@ -1067,10 +1085,14 @@ public class WasmGCClassGenerator implements WasmGCClassInfoProvider, WasmGCInit
"createArrayInstance"));
classEnclosingClassOffset = fields.size();
fields.add(createClassField(standardClasses.classClass().getType().asStorage(), "enclosingClass"));
classDeclaringClassOffset = fields.size();
fields.add(createClassField(standardClasses.classClass().getType().asStorage(), "declaringClass"));
classNameOffset = fields.size();
fields.add(createClassField(standardClasses.stringClass().getType().asStorage(), "name"));
classSimpleNameOffset = fields.size();
fields.add(createClassField(standardClasses.stringClass().getType().asStorage(), "simpleName"));
classCanonicalNameOffset = fields.size();
fields.add(createClassField(standardClasses.stringClass().getType().asStorage(), "canonicalName"));
cloneOffset = fields.size();
fields.add(createClassField(functionTypes.of(standardClasses.objectClass().getType(),
standardClasses.objectClass().getType()).getReference().asStorage(), "clone"));

4
core/src/main/java/org/teavm/backend/wasm/generate/gc/classes/WasmGCClassInfoProvider.java
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@ -44,6 +44,8 @@ public interface WasmGCClassInfoProvider {
int getClassEnclosingClassOffset();
int getClassDeclaringClassOffset();
int getClassParentOffset();
int getNewArrayFunctionOffset();
@ -52,6 +54,8 @@ public interface WasmGCClassInfoProvider {
int getClassSimpleNameOffset();
int getClassCanonicalNameOffset();
int getArrayGetOffset();
int getArrayLengthOffset();

17
core/src/main/java/org/teavm/backend/wasm/generate/gc/methods/WasmGCMethodGenerator.java
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@ -37,8 +37,10 @@ import org.teavm.backend.wasm.generate.gc.strings.WasmGCStringProvider;
import org.teavm.backend.wasm.generators.gc.WasmGCCustomGenerator;
import org.teavm.backend.wasm.generators.gc.WasmGCCustomGeneratorContext;
import org.teavm.backend.wasm.model.WasmFunction;
import org.teavm.backend.wasm.model.WasmGlobal;
import org.teavm.backend.wasm.model.WasmLocal;
import org.teavm.backend.wasm.model.WasmModule;
import org.teavm.backend.wasm.model.WasmTag;
import org.teavm.backend.wasm.model.WasmType;
import org.teavm.backend.wasm.model.expression.WasmFunctionReference;
import org.teavm.backend.wasm.model.expression.WasmReturn;
@ -364,5 +366,20 @@ public class WasmGCMethodGenerator implements BaseWasmFunctionRepository {
public WasmGCNameProvider names() {
return names;
}
@Override
public WasmGlobal exceptionGlobal() {
return context.exceptionGlobal();
}
@Override
public WasmTag exceptionTag() {
return context.getExceptionTag();
}
@Override
public BaseWasmFunctionRepository functions() {
return WasmGCMethodGenerator.this;
}
};
}

34
core/src/main/java/org/teavm/backend/wasm/generators/gc/ClassGenerators.java
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@ -15,55 +15,55 @@
*/
package org.teavm.backend.wasm.generators.gc;
import org.teavm.backend.wasm.generate.gc.classes.WasmGCClassInfoProvider;
import org.teavm.backend.wasm.model.WasmFunction;
import org.teavm.backend.wasm.model.WasmLocal;
import org.teavm.backend.wasm.model.WasmType;
import org.teavm.backend.wasm.model.expression.WasmCall;
import org.teavm.backend.wasm.model.expression.WasmCallReference;
import org.teavm.backend.wasm.model.expression.WasmConditional;
import org.teavm.backend.wasm.model.expression.WasmGetLocal;
import org.teavm.backend.wasm.model.expression.WasmInt32Constant;
import org.teavm.backend.wasm.model.expression.WasmNullConstant;
import org.teavm.backend.wasm.model.expression.WasmReferencesEqual;
import org.teavm.backend.wasm.model.expression.WasmReturn;
import org.teavm.backend.wasm.model.expression.WasmSetGlobal;
import org.teavm.backend.wasm.model.expression.WasmStructGet;
import org.teavm.backend.wasm.model.expression.WasmThrow;
import org.teavm.backend.wasm.runtime.WasmGCSupport;
import org.teavm.model.MethodReference;
public class ClassGenerators implements WasmGCCustomGenerator {
@Override
public void apply(MethodReference method, WasmFunction function, WasmGCCustomGeneratorContext context) {
switch (method.getName()) {
case "isInstance":
generateIsInstance(function, context);
case "isAssignableFrom":
generateIsAssignable(function, context);
break;
default:
throw new IllegalArgumentException("Unsupported method: " + method);
}
}
private void generateIsInstance(WasmFunction function, WasmGCCustomGeneratorContext context) {
private void generateIsAssignable(WasmFunction function, WasmGCCustomGeneratorContext context) {
var classCls = context.classInfoProvider().getClassInfo("java.lang.Class");
var objectCls = context.classInfoProvider().getClassInfo("java.lang.Object");
var thisVar = new WasmLocal(classCls.getType());
var objectVar = new WasmLocal(objectCls.getType());
var otherClassVar = new WasmLocal(classCls.getType());
function.add(thisVar);
function.add(objectVar);
function.add(otherClassVar);
var conditional = new WasmConditional(new WasmReferencesEqual(new WasmGetLocal(objectVar),
var conditional = new WasmConditional(new WasmReferencesEqual(new WasmGetLocal(otherClassVar),
new WasmNullConstant(WasmType.Reference.STRUCT)));
conditional.setType(WasmType.INT32);
conditional.getThenBlock().getBody().add(new WasmInt32Constant(0));
function.getBody().add(conditional);
var npe = new WasmCall(context.functions().forStaticMethod(new MethodReference(WasmGCSupport.class, "npe",
NullPointerException.class)));
conditional.getThenBlock().getBody().add(new WasmSetGlobal(context.exceptionGlobal(), npe));
conditional.getThenBlock().getBody().add(new WasmThrow(context.exceptionTag()));
var objectClass = new WasmStructGet(objectCls.getStructure(), new WasmGetLocal(objectVar),
WasmGCClassInfoProvider.CLASS_FIELD_OFFSET);
var functionRef = new WasmStructGet(classCls.getStructure(), new WasmGetLocal(thisVar),
context.classInfoProvider().getClassSupertypeFunctionOffset());
var call = new WasmCallReference(functionRef,
context.functionTypes().of(WasmType.INT32, classCls.getType()));
call.getArguments().add(objectClass);
conditional.getElseBlock().getBody().add(call);
call.getArguments().add(new WasmGetLocal(otherClassVar));
function.getBody().add(new WasmReturn(conditional));
function.getBody().add(new WasmReturn(call));
}
}

9
core/src/main/java/org/teavm/backend/wasm/generators/gc/WasmGCCustomGeneratorContext.java
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@ -15,11 +15,14 @@
*/
package org.teavm.backend.wasm.generators.gc;
import org.teavm.backend.wasm.BaseWasmFunctionRepository;
import org.teavm.backend.wasm.WasmFunctionTypes;
import org.teavm.backend.wasm.generate.gc.WasmGCNameProvider;
import org.teavm.backend.wasm.generate.gc.classes.WasmGCClassInfoProvider;
import org.teavm.backend.wasm.generate.gc.classes.WasmGCTypeMapper;
import org.teavm.backend.wasm.model.WasmGlobal;
import org.teavm.backend.wasm.model.WasmModule;
import org.teavm.backend.wasm.model.WasmTag;
public interface WasmGCCustomGeneratorContext {
WasmModule module();
@ -31,4 +34,10 @@ public interface WasmGCCustomGeneratorContext {
WasmGCClassInfoProvider classInfoProvider();
WasmGCNameProvider names();
WasmGlobal exceptionGlobal();
BaseWasmFunctionRepository functions();
WasmTag exceptionTag();
}

3
core/src/main/java/org/teavm/backend/wasm/generators/gc/WasmGCCustomGenerators.java
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@ -34,7 +34,8 @@ public class WasmGCCustomGenerators implements WasmGCCustomGeneratorProvider {
private void fillClass() {
var classGenerators = new ClassGenerators();
generators.put(new MethodReference(Class.class, "isInstance", Object.class, boolean.class), classGenerators);
generators.put(new MethodReference(Class.class, "isAssignableFrom", Class.class, boolean.class),
classGenerators);
}
private void fillStringPool() {

30
core/src/main/java/org/teavm/backend/wasm/intrinsics/gc/ClassIntrinsic.java
View File

@ -47,11 +47,18 @@ public class ClassIntrinsic implements WasmGCIntrinsic {
result.setLocation(invocation.getLocation());
return result;
}
case "getSuperclass": {
case "getDeclaringClass": {
var cls = context.generate(invocation.getArguments().get(0));
var clsStruct = context.classInfoProvider().getClassInfo("java.lang.Class").getStructure();
var result = new WasmStructGet(clsStruct, cls,
context.classInfoProvider().getClassParentOffset());
context.classInfoProvider().getClassDeclaringClassOffset());
result.setLocation(invocation.getLocation());
return result;
}
case "getSuperclass": {
var cls = context.generate(invocation.getArguments().get(0));
var clsStruct = context.classInfoProvider().getClassInfo("java.lang.Class").getStructure();
var result = new WasmStructGet(clsStruct, cls, context.classInfoProvider().getClassParentOffset());
result.setLocation(invocation.getLocation());
return result;
}
@ -63,6 +70,10 @@ public class ClassIntrinsic implements WasmGCIntrinsic {
return generateGetSimpleName(invocation, context);
case "setSimpleNameCache":
return generateSetSimpleName(invocation, context);
case "getCanonicalNameCache":
return generateGetCanonicalName(invocation, context);
case "setCanonicalNameCache":
return generateSetCanonicalName(invocation, context);
default:
throw new IllegalArgumentException("Unsupported invocation method: " + invocation.getMethod());
}
@ -95,4 +106,19 @@ public class ClassIntrinsic implements WasmGCIntrinsic {
return new WasmStructSet(classCls.getStructure(), arg,
context.classInfoProvider().getClassSimpleNameOffset(), value);
}
private WasmExpression generateGetCanonicalName(InvocationExpr invocation, WasmGCIntrinsicContext context) {
var classCls = context.classInfoProvider().getClassInfo("java.lang.Class");
var arg = context.generate(invocation.getArguments().get(0));
return new WasmStructGet(classCls.getStructure(), arg,
context.classInfoProvider().getClassCanonicalNameOffset());
}
private WasmExpression generateSetCanonicalName(InvocationExpr invocation, WasmGCIntrinsicContext context) {
var classCls = context.classInfoProvider().getClassInfo("java.lang.Class");
var arg = context.generate(invocation.getArguments().get(0));
var value = context.generate(invocation.getArguments().get(1));
return new WasmStructSet(classCls.getStructure(), arg,
context.classInfoProvider().getClassCanonicalNameOffset(), value);
}
}

3
core/src/main/java/org/teavm/backend/wasm/intrinsics/gc/WasmGCIntrinsics.java
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@ -86,9 +86,12 @@ public class WasmGCIntrinsics implements WasmGCIntrinsicProvider {
add(new MethodReference(Class.class, "getNameImpl", String.class), intrinsic);
add(new MethodReference(Class.class, "setNameImpl", String.class, void.class), intrinsic);
add(new MethodReference(Class.class, "getEnclosingClass", Class.class), intrinsic);
add(new MethodReference(Class.class, "getDeclaringClass", Class.class), intrinsic);
add(new MethodReference(Class.class, "getSuperclass", Class.class), intrinsic);
add(new MethodReference(Class.class, "getSimpleNameCache", Class.class, String.class), intrinsic);
add(new MethodReference(Class.class, "setSimpleNameCache", Class.class, String.class, void.class), intrinsic);
add(new MethodReference(Class.class, "getCanonicalNameCache", String.class), intrinsic);
add(new MethodReference(Class.class, "setCanonicalNameCache", String.class, void.class), intrinsic);
}
private void fillClassSupport() {

3
core/src/main/java/org/teavm/backend/wasm/transformation/gc/BaseClassesTransformation.java
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@ -69,8 +69,9 @@ public class BaseClassesTransformation implements ClassHolderTransformer {
for (var method : cls.getMethods()) {
switch (method.getName()) {
case "getComponentType":
case "isInstance":
case "isAssignableFrom":
case "getEnclosingClass":
case "getDeclaringClass":
case "getSimpleNameCache":
case "setSimpleNameCache":
case "getSuperclass":

3
tests/src/test/java/org/teavm/classlib/java/lang/ClassTest.java
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@ -103,14 +103,12 @@ public class ClassTest {
}
@Test
@SkipPlatform(TestPlatform.WEBASSEMBLY_GC)
public void castingAppropriateObject() {
Object obj = 23;
assertEquals(Integer.valueOf(23), Integer.class.cast(obj));
}
@Test(expected = ClassCastException.class)
@SkipPlatform(TestPlatform.WEBASSEMBLY_GC)
public void inappropriateObjectCastingFails() {
Object obj = 23;
Float.class.cast(obj);
@ -150,7 +148,6 @@ public class ClassTest {
}
@Test
@SkipPlatform(TestPlatform.WEBASSEMBLY_GC)
public void classProperties() {
class B {
}