Examples with Unreachable org.robovm.compiler.llvm.Unreachable used on opensource projects

Example 6 with Unreachable

use of org.robovm.compiler.llvm.Unreachable in project robovm by robovm.

the class TrampolineCompiler method checkClassAccessible.

private boolean checkClassAccessible(Function f, Trampoline t) {
    Clazz caller = config.getClazzes().load(t.getCallingClass());
    String targetClassName = t.getTarget();
    if (isArray(targetClassName)) {
        if (isPrimitiveBaseType(targetClassName)) {
            return true;
        }
        targetClassName = getBaseType(targetClassName);
    }
    Clazz target = config.getClazzes().load(targetClassName);
    if (Access.checkClassAccessible(target, caller)) {
        return true;
    }
    throwIllegalAccessError(f, ILLEGAL_ACCESS_ERROR_CLASS, target, caller);
    f.add(new Unreachable());
    return false;
}

Example 7 with Unreachable

use of org.robovm.compiler.llvm.Unreachable in project robovm by robovm.

the class GlobalValueMethodCompiler method doCompile.

protected Function doCompile(ModuleBuilder moduleBuilder, SootMethod method) {
    AnnotationTag globalValueAnnotation = getAnnotation(method, GLOBAL_VALUE);
    validateGlobalValueMethod(method, globalValueAnnotation);
    boolean optional = readBooleanElem(globalValueAnnotation, "optional", false);
    boolean dereference = readBooleanElem(globalValueAnnotation, "dereference", true);
    Function fn = createMethodFunction(method);
    moduleBuilder.addFunction(fn);
    Type valueType = getStructMemberType(method);
    // Load the address of the resolved @GlobalValue method
    Variable valuePtr = fn.newVariable(new PointerType(valueType));
    Global valuePtrPtr = new Global(Symbols.globalValuePtrSymbol(method), _private, new NullConstant(I8_PTR));
    moduleBuilder.addGlobal(valuePtrPtr);
    fn.add(new Load(valuePtr, new ConstantBitcast(valuePtrPtr.ref(), new PointerType(valuePtr.getType()))));
    Label nullLabel = new Label();
    Label notNullLabel = new Label();
    Variable nullCheck = fn.newVariable(I1);
    fn.add(new Icmp(nullCheck, Condition.eq, valuePtr.ref(), new NullConstant(valuePtr.getType())));
    fn.add(new Br(nullCheck.ref(), fn.newBasicBlockRef(nullLabel), fn.newBasicBlockRef(notNullLabel)));
    fn.newBasicBlock(nullLabel);
    VariableRef env = fn.getParameterRef(0);
    call(fn, BC_THROW_UNSATISIFED_LINK_ERROR, env, moduleBuilder.getString(String.format((optional ? "Optional " : "") + "@GlobalValue method %s.%s%s not bound", className, method.getName(), getDescriptor(method))));
    fn.add(new Unreachable());
    fn.newBasicBlock(notNullLabel);
    if (method.getParameterCount() == 0) {
        // Getter
        Value result = loadValueForGetter(method, fn, valueType, valuePtr.ref(), env, dereference, MarshalerFlags.CALL_TYPE_GLOBAL_VALUE);
        fn.add(new Ret(result));
    } else {
        // Setter
        // 'env' is parameter 0, the value we're interested in is at index 1
        Value value = fn.getParameterRef(1);
        storeValueForSetter(method, fn, valueType, valuePtr.ref(), env, value, MarshalerFlags.CALL_TYPE_GLOBAL_VALUE);
        fn.add(new Ret());
    }
    return fn;
}

Example 8 with Unreachable

use of org.robovm.compiler.llvm.Unreachable in project robovm by robovm.

the class TrampolineCompiler method compile.

public void compile(ModuleBuilder mb, Clazz currentClass, Trampoline t, Set<String> dependencies, Set<Triple<String, String, String>> methodDependencies) {
    this.mb = mb;
    addDependencyIfNeeded(dependencies, currentClass, t);
    /*
         * Check if the target class exists and is accessible. Also check that
         * field accesses and method calls are compatible with the target 
         * field/method and that the field/method is accessible to the caller.
         * If any of the tests fail the weak trampoline function created by the
         * ClassCompiler will be overridden with a function which throws an
         * appropriate exception.
         */
    Function errorFn = new FunctionBuilder(t).linkage(external).build();
    if (!checkClassExists(errorFn, t) || !checkClassAccessible(errorFn, t)) {
        mb.addFunction(errorFn);
        return;
    }
    if (t instanceof New) {
        SootClass target = config.getClazzes().load(t.getTarget()).getSootClass();
        if (target.isAbstract() || target.isInterface()) {
            call(errorFn, BC_THROW_INSTANTIATION_ERROR, errorFn.getParameterRef(0), mb.getString(t.getTarget().replace('/', '.')));
            errorFn.add(new Unreachable());
            mb.addFunction(errorFn);
            return;
        }
        String fnName = Symbols.clinitWrapperSymbol(Symbols.allocatorSymbol(t.getTarget()));
        alias(t, fnName);
    } else if (t instanceof Instanceof) {
        if (isArray(t.getTarget())) {
            FunctionRef fnRef = createInstanceofArray((Instanceof) t);
            alias(t, fnRef.getName());
        } else {
            String fnName = Symbols.instanceofSymbol(t.getTarget());
            alias(t, fnName);
        }
    } else if (t instanceof Checkcast) {
        if (isArray(t.getTarget())) {
            FunctionRef fnRef = createCheckcastArray((Checkcast) t);
            alias(t, fnRef.getName());
        } else {
            String fnName = Symbols.checkcastSymbol(t.getTarget());
            alias(t, fnName);
        }
    } else if (t instanceof LdcClass) {
        if (isArray(t.getTarget())) {
            FunctionRef fnRef = createLdcArray((LdcClass) t);
            alias(t, fnRef.getName());
        } else {
            String fnName = Symbols.ldcExternalSymbol(t.getTarget());
            alias(t, fnName);
        }
    } else if (t instanceof Anewarray) {
        FunctionRef fnRef = createAnewarray((Anewarray) t);
        alias(t, fnRef.getName());
    } else if (t instanceof Multianewarray) {
        FunctionRef fnRef = createMultianewarray((Multianewarray) t);
        alias(t, fnRef.getName());
    } else if (t instanceof FieldAccessor) {
        SootField field = resolveField(errorFn, (FieldAccessor) t);
        if (field != null) {
            dependencies.add(getInternalName(field.getDeclaringClass()));
        }
        if (field == null || !checkMemberAccessible(errorFn, t, field)) {
            mb.addFunction(errorFn);
            return;
        }
        Clazz caller = config.getClazzes().load(t.getCallingClass());
        Clazz target = config.getClazzes().load(t.getTarget());
        if (!((FieldAccessor) t).isGetter() && field.isFinal() && caller != target) {
            // Only the class declaring a final field may write to it.
            // (Actually only <init>/<clinit> methods may write to it but we 
            // don't know which method is accessing the field at this point)
            throwIllegalAccessError(errorFn, ATTEMPT_TO_WRITE_TO_FINAL_FIELD, target, field.getName(), caller);
            mb.addFunction(errorFn);
            return;
        }
        if (!field.isStatic()) {
            createInlinedAccessorForInstanceField((FieldAccessor) t, field);
        } else {
            createTrampolineAliasForField((FieldAccessor) t, field);
        }
    } else if (t instanceof Invokeinterface) {
        SootMethod rm = resolveInterfaceMethod(errorFn, (Invokeinterface) t);
        if (rm != null) {
            methodDependencies.add(new ImmutableTriple<String, String, String>(getInternalName(rm.getDeclaringClass()), rm.getName(), getDescriptor(rm)));
        }
        if (rm == null || !checkMemberAccessible(errorFn, t, rm)) {
            mb.addFunction(errorFn);
            return;
        }
        createTrampolineAliasForMethod((Invoke) t, rm);
    } else if (t instanceof Invoke) {
        SootMethod method = resolveMethod(errorFn, (Invoke) t);
        if (method != null) {
            methodDependencies.add(new ImmutableTriple<String, String, String>(getInternalName(method.getDeclaringClass()), method.getName(), getDescriptor(method)));
        }
        if (method == null || !checkMemberAccessible(errorFn, t, method)) {
            mb.addFunction(errorFn);
            return;
        }
        if (t instanceof Invokespecial && method.isAbstract()) {
            call(errorFn, BC_THROW_ABSTRACT_METHOD_ERROR, errorFn.getParameterRef(0), mb.getString(String.format(NO_SUCH_METHOD_ERROR, method.getDeclaringClass(), method.getName(), getDescriptor(method))));
            errorFn.add(new Unreachable());
            mb.addFunction(errorFn);
            return;
        }
        createTrampolineAliasForMethod((Invoke) t, method);
    }
}

Example 9 with Unreachable

use of org.robovm.compiler.llvm.Unreachable in project robovm by robovm.

the class TrampolineCompiler method throwIllegalAccessError.

private void throwIllegalAccessError(Function f, String message, Object... args) {
    call(f, BC_THROW_ILLEGAL_ACCESS_ERROR, f.getParameterRef(0), mb.getString(String.format(message, args)));
    f.add(new Unreachable());
}

Example 10 with Unreachable

use of org.robovm.compiler.llvm.Unreachable in project robovm by robovm.

the class TrampolineCompiler method throwIncompatibleChangeError.

private void throwIncompatibleChangeError(Function f, String message, Object... args) {
    call(f, BC_THROW_INCOMPATIBLE_CLASS_CHANGE_ERROR, f.getParameterRef(0), mb.getString(String.format(message, args)));
    f.add(new Unreachable());
}