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

Example 1 with Alias

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

the class Linker method createStrippedMethodStub.

private void createStrippedMethodStub(FunctionRef stubRef, ModuleBuilder mb, Clazz clazz, MethodInfo mi) {
    String symbol = methodSymbol(clazz.getInternalName(), mi.getName(), mi.getDesc());
    Alias alias = new Alias(symbol, external, stubRef);
    mb.addAlias(alias);
}

Example 2 with Alias

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

the class CallbackMethodCompiler method compileCallback.

private Function compileCallback(ModuleBuilder moduleBuilder, SootMethod method) {
    Function callbackFn = null;
    FunctionType nativeFnType = null;
    boolean useCWrapper = requiresCWrapper(method);
    if (useCWrapper) {
        // The C wrapper is the function which is called by native code. It
        // handles structs passed/returned by value. It calls an LLVM function 
        // which has the same signature but all structs passed/returned by value
        // replaced by pointers (i8*).
        FunctionRef callbackCWrapperRef = getCallbackCWrapperRef(method, Symbols.callbackCSymbol(method));
        getCWrapperFunctions().add(createCallbackCWrapper(callbackCWrapperRef.getType(), callbackCWrapperRef.getName(), Symbols.callbackInnerCSymbol(method)));
        moduleBuilder.addFunctionDeclaration(new FunctionDeclaration(callbackCWrapperRef));
        Type callbackRetType = callbackCWrapperRef.getType().getReturnType() instanceof StructureType ? I8_PTR : callbackCWrapperRef.getType().getReturnType();
        Type[] callbackParamTypes = new Type[callbackCWrapperRef.getType().getParameterTypes().length];
        for (int i = 0; i < callbackParamTypes.length; i++) {
            Type t = callbackCWrapperRef.getType().getParameterTypes()[i];
            if (t instanceof StructureType) {
                t = I8_PTR;
            }
            callbackParamTypes[i] = t;
        }
        moduleBuilder.addAlias(new Alias(Symbols.callbackPtrSymbol(method), Linkage._private, new ConstantBitcast(callbackCWrapperRef, I8_PTR)));
        callbackFn = new FunctionBuilder(Symbols.callbackInnerCSymbol(method), new FunctionType(callbackRetType, callbackParamTypes)).build();
        nativeFnType = callbackCWrapperRef.getType();
    } else {
        FunctionType callbackFnType = getCallbackFunctionType(method, false);
        callbackFn = FunctionBuilder.callback(method, callbackFnType);
        moduleBuilder.addAlias(new Alias(Symbols.callbackPtrSymbol(method), Linkage._private, new ConstantBitcast(callbackFn.ref(), I8_PTR)));
        nativeFnType = callbackFnType;
    }
    moduleBuilder.addFunction(callbackFn);
    String targetName = method.isSynchronized() ? Symbols.synchronizedWrapperSymbol(method) : Symbols.methodSymbol(method);
    FunctionRef targetFn = new FunctionRef(targetName, getFunctionType(method));
    // Increase the attach count for the current thread (attaches the thread
    // if not attached)
    Value env = call(callbackFn, BC_ATTACH_THREAD_FROM_CALLBACK);
    BasicBlockRef bbSuccess = callbackFn.newBasicBlockRef(new Label("success"));
    BasicBlockRef bbFailure = callbackFn.newBasicBlockRef(new Label("failure"));
    pushCallbackFrame(callbackFn, env);
    trycatchAllEnter(callbackFn, env, bbSuccess, bbFailure);
    callbackFn.newBasicBlock(bbSuccess.getLabel());
    List<MarshaledArg> marshaledArgs = new ArrayList<MarshaledArg>();
    ArrayList<Value> args = new ArrayList<Value>();
    args.add(env);
    if (!method.isStatic()) {
        MarshalerMethod marshalerMethod = config.getMarshalerLookup().findMarshalerMethod(new MarshalSite(method, MarshalSite.RECEIVER));
        MarshaledArg marshaledArg = new MarshaledArg();
        marshaledArg.paramIndex = MarshalSite.RECEIVER;
        marshaledArgs.add(marshaledArg);
        Value arg = callbackFn.getParameterRef(0);
        String targetClassName = getInternalName(method.getDeclaringClass());
        arg = marshalNativeToObject(callbackFn, marshalerMethod, marshaledArg, env, targetClassName, arg, MarshalerFlags.CALL_TYPE_CALLBACK);
        args.add(arg);
    }
    for (int i = 0, argIdx = 0; i < method.getParameterCount(); i++, argIdx++) {
        if (!method.isStatic() && argIdx == 0) {
            argIdx++;
        }
        Value arg = callbackFn.getParameterRef(argIdx);
        soot.Type type = method.getParameterType(i);
        if (needsMarshaler(type)) {
            MarshalerMethod marshalerMethod = config.getMarshalerLookup().findMarshalerMethod(new MarshalSite(method, i));
            String targetClassName = getInternalName(type);
            if (arg.getType() instanceof PrimitiveType) {
                arg = marshalNativeToValueObject(callbackFn, marshalerMethod, env, targetClassName, arg, MarshalerFlags.CALL_TYPE_CALLBACK);
            } else {
                MarshaledArg marshaledArg = new MarshaledArg();
                marshaledArg.paramIndex = i;
                marshaledArgs.add(marshaledArg);
                Type nativeType = nativeFnType.getParameterTypes()[argIdx];
                if (nativeType instanceof StructureType) {
                    // Struct passed by value on the stack. Make a heap copy of the data and marshal that.
                    DataLayout dataLayout = config.getDataLayout();
                    Value heapCopy = call(callbackFn, BC_COPY_STRUCT, env, arg, new IntegerConstant(dataLayout.getAllocSize(nativeType)));
                    arg = marshalNativeToObject(callbackFn, marshalerMethod, marshaledArg, env, targetClassName, heapCopy, MarshalerFlags.CALL_TYPE_CALLBACK);
                } else {
                    arg = marshalNativeToObject(callbackFn, marshalerMethod, marshaledArg, env, targetClassName, arg, MarshalerFlags.CALL_TYPE_CALLBACK);
                }
            }
        } else {
            arg = marshalNativeToPrimitive(callbackFn, method, i, arg);
        }
        args.add(arg);
    }
    Value result = call(callbackFn, targetFn, args);
    // Call Marshaler.updateNative() for each object that was marshaled before
    // the call.
    updateNative(method, callbackFn, env, MarshalerFlags.CALL_TYPE_CALLBACK, marshaledArgs);
    // Marshal the returned value to a native value before returning
    if (needsMarshaler(method.getReturnType())) {
        MarshalerMethod marshalerMethod = config.getMarshalerLookup().findMarshalerMethod(new MarshalSite(method));
        Type nativeType = callbackFn.getType().getReturnType();
        if (nativeType instanceof PrimitiveType) {
            result = marshalValueObjectToNative(callbackFn, marshalerMethod, nativeType, env, result, MarshalerFlags.CALL_TYPE_CALLBACK);
        } else {
            result = marshalObjectToNative(callbackFn, marshalerMethod, null, nativeType, env, result, MarshalerFlags.CALL_TYPE_CALLBACK);
        }
    } else {
        result = marshalPrimitiveToNative(callbackFn, method, result);
    }
    trycatchLeave(callbackFn, env);
    popCallbackFrame(callbackFn, env);
    call(callbackFn, BC_DETACH_THREAD_FROM_CALLBACK, env);
    callbackFn.add(new Ret(result));
    callbackFn.newBasicBlock(bbFailure.getLabel());
    trycatchLeave(callbackFn, env);
    popCallbackFrame(callbackFn, env);
    Value ex = call(callbackFn, BC_EXCEPTION_CLEAR, env);
    // Call Marshaler.updateNative() for each object that was marshaled before
    // the call.
    updateNative(method, callbackFn, env, MarshalerFlags.CALL_TYPE_CALLBACK, marshaledArgs);
    call(callbackFn, BC_DETACH_THREAD_FROM_CALLBACK, env);
    call(callbackFn, BC_THROW, env, ex);
    callbackFn.add(new Unreachable());
    return callbackFn;
}

Example 3 with Alias

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

the class ClassCompiler method compile.

private void compile(Clazz clazz, OutputStream out) throws IOException {
    javaMethodCompiler.reset(clazz);
    bridgeMethodCompiler.reset(clazz);
    callbackMethodCompiler.reset(clazz);
    nativeMethodCompiler.reset(clazz);
    structMemberMethodCompiler.reset(clazz);
    globalValueMethodCompiler.reset(clazz);
    ClazzInfo ci = clazz.resetClazzInfo();
    mb = new ModuleBuilder();
    for (CompilerPlugin compilerPlugin : config.getCompilerPlugins()) {
        compilerPlugin.beforeClass(config, clazz, mb);
    }
    sootClass = clazz.getSootClass();
    trampolines = new HashMap<>();
    catches = new HashSet<String>();
    classFields = getClassFields(config.getOs(), config.getArch(), sootClass);
    instanceFields = getInstanceFields(config.getOs(), config.getArch(), sootClass);
    classType = getClassType(config.getOs(), config.getArch(), sootClass);
    instanceType = getInstanceType(config.getOs(), config.getArch(), sootClass);
    attributesEncoder.encode(mb, sootClass);
    // will never be initialized.
    if (!sootClass.declaresMethodByName("<clinit>") && hasConstantValueTags(classFields)) {
        SootMethod clinit = new SootMethod("<clinit>", Collections.EMPTY_LIST, VoidType.v(), Modifier.STATIC);
        JimpleBody body = Jimple.v().newBody(clinit);
        clinit.setActiveBody(body);
        body.getUnits().add(new JReturnVoidStmt());
        this.sootClass.addMethod(clinit);
    }
    if (isStruct(sootClass)) {
        SootMethod _sizeOf = new SootMethod("_sizeOf", Collections.EMPTY_LIST, IntType.v(), Modifier.PROTECTED | Modifier.NATIVE);
        sootClass.addMethod(_sizeOf);
        SootMethod sizeOf = new SootMethod("sizeOf", Collections.EMPTY_LIST, IntType.v(), Modifier.PUBLIC | Modifier.STATIC | Modifier.NATIVE);
        sootClass.addMethod(sizeOf);
    }
    mb.addInclude(getClass().getClassLoader().getResource(String.format("header-%s-%s.ll", config.getOs().getFamily(), config.getArch())));
    mb.addInclude(getClass().getClassLoader().getResource("header.ll"));
    mb.addFunction(createLdcClass());
    mb.addFunction(createLdcClassWrapper());
    Function allocator = createAllocator();
    mb.addFunction(allocator);
    mb.addFunction(createClassInitWrapperFunction(allocator.ref()));
    for (SootField f : sootClass.getFields()) {
        Function getter = createFieldGetter(f, classFields, classType, instanceFields, instanceType);
        Function setter = createFieldSetter(f, classFields, classType, instanceFields, instanceType);
        mb.addFunction(getter);
        mb.addFunction(setter);
        if (f.isStatic() && !f.isPrivate()) {
            mb.addFunction(createClassInitWrapperFunction(getter.ref()));
            if (!f.isFinal()) {
                mb.addFunction(createClassInitWrapperFunction(setter.ref()));
            }
        }
    }
    // After this point no changes to methods/fields may be done by CompilerPlugins.
    ci.initClassInfo();
    for (SootMethod method : sootClass.getMethods()) {
        for (CompilerPlugin compilerPlugin : config.getCompilerPlugins()) {
            compilerPlugin.beforeMethod(config, clazz, method, mb);
        }
        String name = method.getName();
        Function function = null;
        if (hasBridgeAnnotation(method)) {
            function = bridgeMethod(method);
        } else if (hasGlobalValueAnnotation(method)) {
            function = globalValueMethod(method);
        } else if (isStruct(sootClass) && ("_sizeOf".equals(name) || "sizeOf".equals(name) || hasStructMemberAnnotation(method))) {
            function = structMember(method);
        } else if (method.isNative()) {
            function = nativeMethod(method);
        } else if (!method.isAbstract()) {
            function = method(method);
        }
        if (hasCallbackAnnotation(method)) {
            callbackMethod(method);
        }
        if (!name.equals("<clinit>") && !name.equals("<init>") && !method.isPrivate() && !method.isStatic() && !Modifier.isFinal(method.getModifiers()) && !Modifier.isFinal(sootClass.getModifiers())) {
            createLookupFunction(method);
        }
        if (method.isStatic() && !name.equals("<clinit>")) {
            String fnName = method.isSynchronized() ? Symbols.synchronizedWrapperSymbol(method) : Symbols.methodSymbol(method);
            FunctionRef fn = new FunctionRef(fnName, getFunctionType(method));
            mb.addFunction(createClassInitWrapperFunction(fn));
        }
        for (CompilerPlugin compilerPlugin : config.getCompilerPlugins()) {
            if (function != null) {
                compilerPlugin.afterMethod(config, clazz, method, mb, function);
            }
        }
    }
    for (Trampoline trampoline : trampolines.keySet()) {
        Set<String> deps = new HashSet<String>();
        Set<Triple<String, String, String>> mDeps = new HashSet<>();
        trampolineResolver.compile(mb, clazz, trampoline, deps, mDeps);
        for (SootMethod m : trampolines.get(trampoline)) {
            MethodInfo mi = ci.getMethod(m.getName(), getDescriptor(m));
            mi.addClassDependencies(deps, false);
            mi.addInvokeMethodDependencies(mDeps, false);
        }
    }
    /*
         * Add method dependencies from overriding methods to the overridden
         * super method(s). These will be reversed by the DependencyGraph to
         * create edges from the super/interface method to the overriding
         * method.
         */
    Map<SootMethod, Set<SootMethod>> overriddenMethods = getOverriddenMethods(this.sootClass);
    for (SootMethod from : overriddenMethods.keySet()) {
        MethodInfo mi = ci.getMethod(from.getName(), getDescriptor(from));
        for (SootMethod to : overriddenMethods.get(from)) {
            mi.addSuperMethodDependency(getInternalName(to.getDeclaringClass()), to.getName(), getDescriptor(to), false);
        }
    }
    /*
         * Edge case. A method in a superclass might satisfy an interface method
         * in the interfaces implemented by this class. See e.g. the abstract
         * class HashMap$HashIterator which doesn't implement Iterator but has
         * the hasNext() and other methods. We add a dependency from the current
         * class to the super method to ensure it's included if the current
         * class is linked in.
         */
    if (sootClass.hasSuperclass()) {
        for (SootClass interfaze : getImmediateInterfaces(sootClass)) {
            for (SootMethod m : interfaze.getMethods()) {
                if (!m.isStatic()) {
                    try {
                        this.sootClass.getMethod(m.getName(), m.getParameterTypes());
                    } catch (RuntimeException e) {
                        /*
                             * Not found. Find the implementation in
                             * superclasses.
                             */
                        SootMethod superMethod = null;
                        for (SootClass sc = sootClass.getSuperclass(); sc.hasSuperclass(); sc = sc.getSuperclass()) {
                            try {
                                SootMethod candidate = sc.getMethod(m.getName(), m.getParameterTypes());
                                if (!candidate.isStatic()) {
                                    superMethod = candidate;
                                    break;
                                }
                            } catch (RuntimeException e2) {
                            // Not found.
                            }
                        }
                        if (superMethod != null) {
                            ci.addSuperMethodDependency(getInternalName(superMethod.getDeclaringClass()), superMethod.getName(), getDescriptor(superMethod), false);
                        }
                    }
                }
            }
        }
    }
    Global classInfoStruct = null;
    try {
        if (!sootClass.isInterface()) {
            config.getVTableCache().get(sootClass);
        }
        classInfoStruct = new Global(Symbols.infoStructSymbol(clazz.getInternalName()), Linkage.weak, createClassInfoStruct());
    } catch (IllegalArgumentException e) {
        // VTable throws this if any of the superclasses of the class is actually an interface.
        // Shouldn't happen frequently but the DRLVM test suite has some tests for this.
        // The Linker will take care of making sure the class cannot be loaded at runtime.
        classInfoStruct = new Global(Symbols.infoStructSymbol(clazz.getInternalName()), I8_PTR, true);
    }
    mb.addGlobal(classInfoStruct);
    /*
         * Emit an internal i8* alias for the info struct which MethodCompiler
         * can use when referencing this info struct in exception landing pads
         * in methods in the same class. See #1007.
         */
    mb.addAlias(new Alias(classInfoStruct.getName() + "_i8ptr", Linkage._private, new ConstantBitcast(classInfoStruct.ref(), I8_PTR)));
    Function infoFn = FunctionBuilder.infoStruct(sootClass);
    infoFn.add(new Ret(new ConstantBitcast(classInfoStruct.ref(), I8_PTR_PTR)));
    mb.addFunction(infoFn);
    for (CompilerPlugin compilerPlugin : config.getCompilerPlugins()) {
        compilerPlugin.afterClass(config, clazz, mb);
    }
    OutputStreamWriter writer = new OutputStreamWriter(out, "UTF-8");
    mb.build().write(writer);
    writer.flush();
    ci.setCatchNames(catches);
    // Make sure no class or interface has zero dependencies
    ci.addClassDependency("java/lang/Object", false);
    if (sootClass.hasSuperclass() && !sootClass.isInterface()) {
        ci.addClassDependency(getInternalName(sootClass.getSuperclass()), false);
    }
    for (SootClass iface : sootClass.getInterfaces()) {
        ci.addClassDependency(getInternalName(iface), false);
    }
    for (SootField f : sootClass.getFields()) {
        addClassDependencyIfNeeded(clazz, f.getType(), false);
    }
    for (SootMethod m : sootClass.getMethods()) {
        MethodInfo mi = ci.getMethod(m.getName(), getDescriptor(m));
        addClassDependencyIfNeeded(clazz, mi, m.getReturnType(), false);
        @SuppressWarnings("unchecked") List<soot.Type> paramTypes = (List<soot.Type>) m.getParameterTypes();
        for (soot.Type type : paramTypes) {
            addClassDependencyIfNeeded(clazz, mi, type, false);
        }
    }
    ci.addClassDependencies(attributesEncoder.getDependencies(), false);
    ci.addClassDependencies(catches, false);
    for (Trampoline t : trampolines.keySet()) {
        if (t instanceof Checkcast) {
            ci.addCheckcast(t.getTarget());
        } else if (t instanceof Instanceof) {
            ci.addInstanceof(t.getTarget());
        } else if (t instanceof Invokevirtual || t instanceof Invokeinterface) {
            ci.addInvoke(t.getTarget() + "." + ((Invoke) t).getMethodName() + ((Invoke) t).getMethodDesc());
        }
    }
    clazz.saveClazzInfo();
}