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

Example 16 with Function

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

the class ClassCompiler method createLookupFunction.

private void createLookupFunction(SootMethod m) {
    Function function = FunctionBuilder.lookup(m, true);
    mb.addFunction(function);
    Variable reserved0 = function.newVariable(I8_PTR_PTR);
    function.add(new Getelementptr(reserved0, function.getParameterRef(0), 0, 4));
    Variable reserved1 = function.newVariable(I8_PTR_PTR);
    function.add(new Getelementptr(reserved1, function.getParameterRef(0), 0, 5));
    function.add(new Store(getString(m.getName()), reserved0.ref()));
    function.add(new Store(getString(getDescriptor(m)), reserved1.ref()));
    if (!sootClass.isInterface()) {
        int vtableIndex = 0;
        try {
            VTable vtable = config.getVTableCache().get(sootClass);
            vtableIndex = vtable.getEntry(m).getIndex();
        } 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.
        // Use 0 as vtableIndex since this lookup function will never be called anyway.
        }
        Value classPtr = call(function, OBJECT_CLASS, function.getParameterRef(1));
        Value vtablePtr = call(function, CLASS_VITABLE, classPtr);
        Variable funcPtrPtr = function.newVariable(I8_PTR_PTR);
        function.add(new Getelementptr(funcPtrPtr, vtablePtr, 0, 1, vtableIndex));
        Variable funcPtr = function.newVariable(I8_PTR);
        function.add(new Load(funcPtr, funcPtrPtr.ref()));
        Variable f = function.newVariable(function.getType());
        function.add(new Bitcast(f, funcPtr.ref(), f.getType()));
        Value result = tailcall(function, f.ref(), function.getParameterRefs());
        function.add(new Ret(result));
    } else {
        ITable itable = config.getITableCache().get(sootClass);
        ITable.Entry entry = itable.getEntry(m);
        List<Value> args = new ArrayList<Value>();
        args.add(function.getParameterRef(0));
        args.add(getInfoStruct(function, sootClass));
        args.add(function.getParameterRef(1));
        args.add(new IntegerConstant(entry.getIndex()));
        Value fptr = call(function, BC_LOOKUP_INTERFACE_METHOD_IMPL, args);
        Variable f = function.newVariable(function.getType());
        function.add(new Bitcast(f, fptr, f.getType()));
        Value result = tailcall(function, f.ref(), function.getParameterRefs());
        function.add(new Ret(result));
    }
}

Example 17 with Function

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

the class AbstractMethodCompiler method compile.

public final Function compile(ModuleBuilder moduleBuilder, SootMethod method) {
    sootMethod = method;
    trampolines = new HashSet<Trampoline>();
    catches = new HashSet<String>();
    Function f = doCompile(moduleBuilder, method);
    if (method.isSynchronized()) {
        compileSynchronizedWrapper(moduleBuilder, method);
    }
    return f;
}

Example 18 with Function

use of org.robovm.compiler.llvm.Function 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 19 with Function

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

the class NativeMethodCompiler method doCompile.

protected Function doCompile(ModuleBuilder moduleBuilder, SootMethod method) {
    Function fn = createMethodFunction(method);
    moduleBuilder.addFunction(fn);
    Value env = fn.getParameterRef(0);
    ArrayList<Value> args = new ArrayList<Value>(Arrays.asList(fn.getParameterRefs()));
    if (method.isStatic()) {
        // Add the current class as second parameter
        FunctionRef ldcFn = FunctionBuilder.ldcInternal(sootMethod.getDeclaringClass()).ref();
        Value clazz = call(fn, ldcFn, env);
        args.add(1, clazz);
    }
    pushNativeFrame(fn);
    FunctionRef targetFn = createNative(moduleBuilder, method);
    Value result = call(fn, targetFn, args);
    popNativeFrame(fn);
    call(fn, BC_THROW_IF_EXCEPTION_OCCURRED, env);
    fn.add(new Ret(result));
    return fn;
}

Example 20 with Function

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

the class NativeMethodCompiler method createNative.

private FunctionRef createNative(ModuleBuilder mb, SootMethod method) {
    String targetInternalName = getInternalName(method.getDeclaringClass());
    String methodName = method.getName();
    String methodDesc = getDescriptor(method);
    FunctionType nativeFunctionType = Types.getNativeFunctionType(methodDesc, method.isStatic());
    String shortName = mangleNativeMethod(targetInternalName, methodName);
    String longName = mangleNativeMethod(targetInternalName, methodName, methodDesc);
    /*
         * To support statically linked native method implementation we create
         * weak stub functions with the same names as the expected JNI functions
         * (long and short names). These will be discarded by the linker if
         * proper functions are available at link time.
         * 
         * The weak stub with the short JNI name just calls the weak stub with
         * the long name.
         * 
         * The weak stub with the long name calls _bcResolveNative() which will
         * try to resolve the native method against dynamically loaded JNI libs.
         * If _bcResolveNative() finds a matching symbol in a dynamic lib or an
         * implementation has previously been registered using JNI
         * RegisterNatives() that will be stored in the native method pointer
         * passed to it and returned. The stub will call the implementation
         * returned by _bcResolveNative(). If no implementation can be found
         * _bcResolveNative() throws an UnsatisfiedLinkError and doesn't return
         * to the stub.
         * 
         * The limitation of this approach is that RegisterNatives() only works
         * for dynamically linked native methods and can only be used prior to
         * the first call of such a method. Native methods can never be rewired
         * or unregistered.
         */
    /*
         * The function with the long JNI name. This is the one that calls
         * _bcResolveNative() and then calls the implementation.
         */
    Function fn = new FunctionBuilder(longName, nativeFunctionType).linkage(weak).build();
    Global g = new Global(Symbols.nativeMethodPtrSymbol(targetInternalName, methodName, methodDesc), new NullConstant(I8_PTR));
    mb.addGlobal(g);
    FunctionRef ldcFn = FunctionBuilder.ldcInternal(targetInternalName).ref();
    Value theClass = call(fn, ldcFn, fn.getParameterRef(0));
    Value implI8Ptr = call(fn, BC_RESOLVE_NATIVE, fn.getParameterRef(0), theClass, mb.getString(methodName), mb.getString(methodDesc), mb.getString(shortName), mb.getString(longName), g.ref());
    Variable nullTest = fn.newVariable(I1);
    fn.add(new Icmp(nullTest, Condition.ne, implI8Ptr, new NullConstant(I8_PTR)));
    Label trueLabel = new Label();
    Label falseLabel = new Label();
    fn.add(new Br(nullTest.ref(), fn.newBasicBlockRef(trueLabel), fn.newBasicBlockRef(falseLabel)));
    fn.newBasicBlock(falseLabel);
    if (fn.getType().getReturnType() instanceof IntegerType) {
        fn.add(new Ret(new IntegerConstant(0, (IntegerType) fn.getType().getReturnType())));
    } else if (fn.getType().getReturnType() instanceof FloatingPointType) {
        fn.add(new Ret(new FloatingPointConstant(0.0, (FloatingPointType) fn.getType().getReturnType())));
    } else if (fn.getType().getReturnType() instanceof PointerType) {
        fn.add(new Ret(new NullConstant((PointerType) fn.getType().getReturnType())));
    } else {
        fn.add(new Ret());
    }
    fn.newBasicBlock(trueLabel);
    Variable impl = fn.newVariable(nativeFunctionType);
    fn.add(new Bitcast(impl, implI8Ptr, impl.getType()));
    Value result = call(fn, impl.ref(), fn.getParameterRefs());
    fn.add(new Ret(result));
    mb.addFunction(fn);
    FunctionRef targetFn = fn.ref();
    if (!isLongNativeFunctionNameRequired(method)) {
        /*
             * Generate a function with the short JNI name. This just calls the
             * function with the long name.
             */
        Function fnShort = new FunctionBuilder(shortName, nativeFunctionType).linkage(weak).build();
        Value resultInner = call(fnShort, fn.ref(), fnShort.getParameterRefs());
        fnShort.add(new Ret(resultInner));
        mb.addFunction(fnShort);
        targetFn = fnShort.ref();
    }
    return targetFn;
}