--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/runtime/reflection.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1283 @@
+/*
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "classfile/javaClasses.hpp"
+#include "classfile/moduleEntry.hpp"
+#include "classfile/packageEntry.hpp"
+#include "classfile/stringTable.hpp"
+#include "classfile/systemDictionary.hpp"
+#include "classfile/verifier.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "interpreter/linkResolver.hpp"
+#include "memory/oopFactory.hpp"
+#include "memory/resourceArea.hpp"
+#include "memory/universe.inline.hpp"
+#include "oops/instanceKlass.hpp"
+#include "oops/objArrayKlass.hpp"
+#include "oops/objArrayOop.inline.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvm.h"
+#include "prims/jvmtiExport.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/handles.inline.hpp"
+#include "runtime/javaCalls.hpp"
+#include "runtime/reflection.hpp"
+#include "runtime/reflectionUtils.hpp"
+#include "runtime/signature.hpp"
+#include "runtime/vframe.hpp"
+
+static void trace_class_resolution(const Klass* to_class) {
+ ResourceMark rm;
+ int line_number = -1;
+ const char * source_file = NULL;
+ Klass* caller = NULL;
+ JavaThread* jthread = JavaThread::current();
+ if (jthread->has_last_Java_frame()) {
+ vframeStream vfst(jthread);
+ // skip over any frames belonging to java.lang.Class
+ while (!vfst.at_end() &&
+ vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class()) {
+ vfst.next();
+ }
+ if (!vfst.at_end()) {
+ // this frame is a likely suspect
+ caller = vfst.method()->method_holder();
+ line_number = vfst.method()->line_number_from_bci(vfst.bci());
+ Symbol* s = vfst.method()->method_holder()->source_file_name();
+ if (s != NULL) {
+ source_file = s->as_C_string();
+ }
+ }
+ }
+ if (caller != NULL) {
+ const char * from = caller->external_name();
+ const char * to = to_class->external_name();
+ // print in a single call to reduce interleaving between threads
+ if (source_file != NULL) {
+ log_debug(class, resolve)("%s %s %s:%d (reflection)", from, to, source_file, line_number);
+ } else {
+ log_debug(class, resolve)("%s %s (reflection)", from, to);
+ }
+ }
+}
+
+
+oop Reflection::box(jvalue* value, BasicType type, TRAPS) {
+ if (type == T_VOID) {
+ return NULL;
+ }
+ if (type == T_OBJECT || type == T_ARRAY) {
+ // regular objects are not boxed
+ return (oop) value->l;
+ }
+ oop result = java_lang_boxing_object::create(type, value, CHECK_NULL);
+ if (result == NULL) {
+ THROW_(vmSymbols::java_lang_IllegalArgumentException(), result);
+ }
+ return result;
+}
+
+
+BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) {
+ if (box == NULL) {
+ THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL);
+ }
+ return java_lang_boxing_object::get_value(box, value);
+}
+
+BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) {
+ // Note: box is really the unboxed oop. It might even be a Short, etc.!
+ value->l = (jobject) box;
+ return T_OBJECT;
+}
+
+
+void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) {
+ assert(wide_type != current_type, "widen should not be called with identical types");
+ switch (wide_type) {
+ case T_BOOLEAN:
+ case T_BYTE:
+ case T_CHAR:
+ break; // fail
+ case T_SHORT:
+ switch (current_type) {
+ case T_BYTE:
+ value->s = (jshort) value->b;
+ return;
+ default:
+ break;
+ }
+ break; // fail
+ case T_INT:
+ switch (current_type) {
+ case T_BYTE:
+ value->i = (jint) value->b;
+ return;
+ case T_CHAR:
+ value->i = (jint) value->c;
+ return;
+ case T_SHORT:
+ value->i = (jint) value->s;
+ return;
+ default:
+ break;
+ }
+ break; // fail
+ case T_LONG:
+ switch (current_type) {
+ case T_BYTE:
+ value->j = (jlong) value->b;
+ return;
+ case T_CHAR:
+ value->j = (jlong) value->c;
+ return;
+ case T_SHORT:
+ value->j = (jlong) value->s;
+ return;
+ case T_INT:
+ value->j = (jlong) value->i;
+ return;
+ default:
+ break;
+ }
+ break; // fail
+ case T_FLOAT:
+ switch (current_type) {
+ case T_BYTE:
+ value->f = (jfloat) value->b;
+ return;
+ case T_CHAR:
+ value->f = (jfloat) value->c;
+ return;
+ case T_SHORT:
+ value->f = (jfloat) value->s;
+ return;
+ case T_INT:
+ value->f = (jfloat) value->i;
+ return;
+ case T_LONG:
+ value->f = (jfloat) value->j;
+ return;
+ default:
+ break;
+ }
+ break; // fail
+ case T_DOUBLE:
+ switch (current_type) {
+ case T_BYTE:
+ value->d = (jdouble) value->b;
+ return;
+ case T_CHAR:
+ value->d = (jdouble) value->c;
+ return;
+ case T_SHORT:
+ value->d = (jdouble) value->s;
+ return;
+ case T_INT:
+ value->d = (jdouble) value->i;
+ return;
+ case T_FLOAT:
+ value->d = (jdouble) value->f;
+ return;
+ case T_LONG:
+ value->d = (jdouble) value->j;
+ return;
+ default:
+ break;
+ }
+ break; // fail
+ default:
+ break; // fail
+ }
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
+}
+
+
+BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) {
+ if (!a->is_within_bounds(index)) {
+ THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL);
+ }
+ if (a->is_objArray()) {
+ value->l = (jobject) objArrayOop(a)->obj_at(index);
+ return T_OBJECT;
+ } else {
+ assert(a->is_typeArray(), "just checking");
+ BasicType type = TypeArrayKlass::cast(a->klass())->element_type();
+ switch (type) {
+ case T_BOOLEAN:
+ value->z = typeArrayOop(a)->bool_at(index);
+ break;
+ case T_CHAR:
+ value->c = typeArrayOop(a)->char_at(index);
+ break;
+ case T_FLOAT:
+ value->f = typeArrayOop(a)->float_at(index);
+ break;
+ case T_DOUBLE:
+ value->d = typeArrayOop(a)->double_at(index);
+ break;
+ case T_BYTE:
+ value->b = typeArrayOop(a)->byte_at(index);
+ break;
+ case T_SHORT:
+ value->s = typeArrayOop(a)->short_at(index);
+ break;
+ case T_INT:
+ value->i = typeArrayOop(a)->int_at(index);
+ break;
+ case T_LONG:
+ value->j = typeArrayOop(a)->long_at(index);
+ break;
+ default:
+ return T_ILLEGAL;
+ }
+ return type;
+ }
+}
+
+
+void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) {
+ if (!a->is_within_bounds(index)) {
+ THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
+ }
+ if (a->is_objArray()) {
+ if (value_type == T_OBJECT) {
+ oop obj = (oop) value->l;
+ if (obj != NULL) {
+ Klass* element_klass = ObjArrayKlass::cast(a->klass())->element_klass();
+ if (!obj->is_a(element_klass)) {
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch");
+ }
+ }
+ objArrayOop(a)->obj_at_put(index, obj);
+ }
+ } else {
+ assert(a->is_typeArray(), "just checking");
+ BasicType array_type = TypeArrayKlass::cast(a->klass())->element_type();
+ if (array_type != value_type) {
+ // The widen operation can potentially throw an exception, but cannot block,
+ // so typeArrayOop a is safe if the call succeeds.
+ widen(value, value_type, array_type, CHECK);
+ }
+ switch (array_type) {
+ case T_BOOLEAN:
+ typeArrayOop(a)->bool_at_put(index, value->z);
+ break;
+ case T_CHAR:
+ typeArrayOop(a)->char_at_put(index, value->c);
+ break;
+ case T_FLOAT:
+ typeArrayOop(a)->float_at_put(index, value->f);
+ break;
+ case T_DOUBLE:
+ typeArrayOop(a)->double_at_put(index, value->d);
+ break;
+ case T_BYTE:
+ typeArrayOop(a)->byte_at_put(index, value->b);
+ break;
+ case T_SHORT:
+ typeArrayOop(a)->short_at_put(index, value->s);
+ break;
+ case T_INT:
+ typeArrayOop(a)->int_at_put(index, value->i);
+ break;
+ case T_LONG:
+ typeArrayOop(a)->long_at_put(index, value->j);
+ break;
+ default:
+ THROW(vmSymbols::java_lang_IllegalArgumentException());
+ }
+ }
+}
+
+static Klass* basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) {
+ assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");
+ BasicType type = java_lang_Class::primitive_type(basic_type_mirror);
+ if (type == T_VOID) {
+ THROW_0(vmSymbols::java_lang_IllegalArgumentException());
+ }
+ else {
+ return Universe::typeArrayKlassObj(type);
+ }
+}
+
+#ifdef ASSERT
+static oop basic_type_arrayklass_to_mirror(Klass* basic_type_arrayklass, TRAPS) {
+ BasicType type = TypeArrayKlass::cast(basic_type_arrayklass)->element_type();
+ return Universe::java_mirror(type);
+}
+#endif
+
+arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) {
+ if (element_mirror == NULL) {
+ THROW_0(vmSymbols::java_lang_NullPointerException());
+ }
+ if (length < 0) {
+ THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
+ }
+ if (java_lang_Class::is_primitive(element_mirror)) {
+ Klass* tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
+ return TypeArrayKlass::cast(tak)->allocate(length, THREAD);
+ } else {
+ Klass* k = java_lang_Class::as_Klass(element_mirror);
+ if (k->is_array_klass() && ArrayKlass::cast(k)->dimension() >= MAX_DIM) {
+ THROW_0(vmSymbols::java_lang_IllegalArgumentException());
+ }
+ return oopFactory::new_objArray(k, length, THREAD);
+ }
+}
+
+
+arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) {
+ assert(dim_array->is_typeArray(), "just checking");
+ assert(TypeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking");
+
+ if (element_mirror == NULL) {
+ THROW_0(vmSymbols::java_lang_NullPointerException());
+ }
+
+ int len = dim_array->length();
+ if (len <= 0 || len > MAX_DIM) {
+ THROW_0(vmSymbols::java_lang_IllegalArgumentException());
+ }
+
+ jint dimensions[MAX_DIM]; // C array copy of intArrayOop
+ for (int i = 0; i < len; i++) {
+ int d = dim_array->int_at(i);
+ if (d < 0) {
+ THROW_0(vmSymbols::java_lang_NegativeArraySizeException());
+ }
+ dimensions[i] = d;
+ }
+
+ Klass* klass;
+ int dim = len;
+ if (java_lang_Class::is_primitive(element_mirror)) {
+ klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
+ } else {
+ klass = java_lang_Class::as_Klass(element_mirror);
+ if (klass->is_array_klass()) {
+ int k_dim = ArrayKlass::cast(klass)->dimension();
+ if (k_dim + len > MAX_DIM) {
+ THROW_0(vmSymbols::java_lang_IllegalArgumentException());
+ }
+ dim += k_dim;
+ }
+ }
+ klass = klass->array_klass(dim, CHECK_NULL);
+ oop obj = ArrayKlass::cast(klass)->multi_allocate(len, dimensions, CHECK_NULL);
+ assert(obj->is_array(), "just checking");
+ return arrayOop(obj);
+}
+
+
+oop Reflection::array_component_type(oop mirror, TRAPS) {
+ if (java_lang_Class::is_primitive(mirror)) {
+ return NULL;
+ }
+
+ Klass* klass = java_lang_Class::as_Klass(mirror);
+ if (!klass->is_array_klass()) {
+ return NULL;
+ }
+
+ oop result = java_lang_Class::component_mirror(mirror);
+#ifdef ASSERT
+ oop result2 = NULL;
+ if (ArrayKlass::cast(klass)->dimension() == 1) {
+ if (klass->is_typeArray_klass()) {
+ result2 = basic_type_arrayklass_to_mirror(klass, CHECK_NULL);
+ } else {
+ result2 = ObjArrayKlass::cast(klass)->element_klass()->java_mirror();
+ }
+ } else {
+ Klass* lower_dim = ArrayKlass::cast(klass)->lower_dimension();
+ assert(lower_dim->is_array_klass(), "just checking");
+ result2 = lower_dim->java_mirror();
+ }
+ assert(result == result2, "results must be consistent");
+#endif //ASSERT
+ return result;
+}
+
+static bool under_host_klass(const InstanceKlass* ik, const InstanceKlass* host_klass) {
+ DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000);
+ for (;;) {
+ const InstanceKlass* hc = ik->host_klass();
+ if (hc == NULL) return false;
+ if (hc == host_klass) return true;
+ ik = hc;
+
+ // There's no way to make a host class loop short of patching memory.
+ // Therefore there cannot be a loop here unless there's another bug.
+ // Still, let's check for it.
+ assert(--inf_loop_check > 0, "no host_klass loop");
+ }
+}
+
+static bool can_relax_access_check_for(const Klass* accessor,
+ const Klass* accessee,
+ bool classloader_only) {
+
+ const InstanceKlass* accessor_ik = InstanceKlass::cast(accessor);
+ const InstanceKlass* accessee_ik = InstanceKlass::cast(accessee);
+
+ // If either is on the other's host_klass chain, access is OK,
+ // because one is inside the other.
+ if (under_host_klass(accessor_ik, accessee_ik) ||
+ under_host_klass(accessee_ik, accessor_ik))
+ return true;
+
+ if ((RelaxAccessControlCheck &&
+ accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION &&
+ accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) ||
+ (accessor_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION &&
+ accessee_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION)) {
+ return classloader_only &&
+ Verifier::relax_access_for(accessor_ik->class_loader()) &&
+ accessor_ik->protection_domain() == accessee_ik->protection_domain() &&
+ accessor_ik->class_loader() == accessee_ik->class_loader();
+ }
+
+ return false;
+}
+
+/*
+ Type Accessibility check for public types: Callee Type T is accessible to Caller Type S if:
+
+ Callee T in Callee T in package PT,
+ unnamed module runtime module MT
+ ------------------------------------------------------------------------------------------------
+
+ Caller S in package If MS is loose: YES If same classloader/package (PS == PT): YES
+ PS, runtime module MS If MS can read T's If same runtime module: (MS == MT): YES
+ unnamed module: YES
+ Else if (MS can read MT (establish readability) &&
+ ((MT exports PT to MS or to all modules) ||
+ (MT is open))): YES
+
+ ------------------------------------------------------------------------------------------------
+ Caller S in unnamed YES Readability exists because unnamed module
+ module UM "reads" all modules
+ if (MT exports PT to UM or to all modules): YES
+
+ ------------------------------------------------------------------------------------------------
+
+ Note: a loose module is a module that can read all current and future unnamed modules.
+*/
+Reflection::VerifyClassAccessResults Reflection::verify_class_access(
+ const Klass* current_class, const InstanceKlass* new_class, bool classloader_only) {
+
+ // Verify that current_class can access new_class. If the classloader_only
+ // flag is set, we automatically allow any accesses in which current_class
+ // doesn't have a classloader.
+ if ((current_class == NULL) ||
+ (current_class == new_class) ||
+ is_same_class_package(current_class, new_class)) {
+ return ACCESS_OK;
+ }
+ // Allow all accesses from jdk/internal/reflect/MagicAccessorImpl subclasses to
+ // succeed trivially.
+ if (current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
+ return ACCESS_OK;
+ }
+
+ // module boundaries
+ if (new_class->is_public()) {
+ // Ignore modules for DumpSharedSpaces because we do not have any package
+ // or module information for modules other than java.base.
+ if (DumpSharedSpaces) {
+ return ACCESS_OK;
+ }
+
+ // Find the module entry for current_class, the accessor
+ ModuleEntry* module_from = current_class->module();
+ // Find the module entry for new_class, the accessee
+ ModuleEntry* module_to = new_class->module();
+
+ // both in same (possibly unnamed) module
+ if (module_from == module_to) {
+ return ACCESS_OK;
+ }
+
+ // Acceptable access to a type in an unnamed module. Note that since
+ // unnamed modules can read all unnamed modules, this also handles the
+ // case where module_from is also unnamed but in a different class loader.
+ if (!module_to->is_named() &&
+ (module_from->can_read_all_unnamed() || module_from->can_read(module_to))) {
+ return ACCESS_OK;
+ }
+
+ // Establish readability, check if module_from is allowed to read module_to.
+ if (!module_from->can_read(module_to)) {
+ return MODULE_NOT_READABLE;
+ }
+
+ // Access is allowed if module_to is open, i.e. all its packages are unqualifiedly exported
+ if (module_to->is_open()) {
+ return ACCESS_OK;
+ }
+
+ PackageEntry* package_to = new_class->package();
+ assert(package_to != NULL, "can not obtain new_class' package");
+
+ {
+ MutexLocker m1(Module_lock);
+
+ // Once readability is established, if module_to exports T unqualifiedly,
+ // (to all modules), than whether module_from is in the unnamed module
+ // or not does not matter, access is allowed.
+ if (package_to->is_unqual_exported()) {
+ return ACCESS_OK;
+ }
+
+ // Access is allowed if both 1 & 2 hold:
+ // 1. Readability, module_from can read module_to (established above).
+ // 2. Either module_to exports T to module_from qualifiedly.
+ // or
+ // module_to exports T to all unnamed modules and module_from is unnamed.
+ // or
+ // module_to exports T unqualifiedly to all modules (checked above).
+ if (!package_to->is_qexported_to(module_from)) {
+ return TYPE_NOT_EXPORTED;
+ }
+ }
+ return ACCESS_OK;
+ }
+
+ if (can_relax_access_check_for(current_class, new_class, classloader_only)) {
+ return ACCESS_OK;
+ }
+ return OTHER_PROBLEM;
+}
+
+// Return an error message specific to the specified Klass*'s and result.
+// This function must be called from within a block containing a ResourceMark.
+char* Reflection::verify_class_access_msg(const Klass* current_class,
+ const InstanceKlass* new_class,
+ const VerifyClassAccessResults result) {
+ assert(result != ACCESS_OK, "must be failure result");
+ char * msg = NULL;
+ if (result != OTHER_PROBLEM && new_class != NULL && current_class != NULL) {
+ // Find the module entry for current_class, the accessor
+ ModuleEntry* module_from = current_class->module();
+ const char * module_from_name = module_from->is_named() ? module_from->name()->as_C_string() : UNNAMED_MODULE;
+ const char * current_class_name = current_class->external_name();
+
+ // Find the module entry for new_class, the accessee
+ ModuleEntry* module_to = NULL;
+ module_to = new_class->module();
+ const char * module_to_name = module_to->is_named() ? module_to->name()->as_C_string() : UNNAMED_MODULE;
+ const char * new_class_name = new_class->external_name();
+
+ if (result == MODULE_NOT_READABLE) {
+ assert(module_from->is_named(), "Unnamed modules can read all modules");
+ if (module_to->is_named()) {
+ size_t len = 100 + strlen(current_class_name) + 2*strlen(module_from_name) +
+ strlen(new_class_name) + 2*strlen(module_to_name);
+ msg = NEW_RESOURCE_ARRAY(char, len);
+ jio_snprintf(msg, len - 1,
+ "class %s (in module %s) cannot access class %s (in module %s) because module %s does not read module %s",
+ current_class_name, module_from_name, new_class_name,
+ module_to_name, module_from_name, module_to_name);
+ } else {
+ oop jlm = module_to->module();
+ assert(jlm != NULL, "Null jlm in module_to ModuleEntry");
+ intptr_t identity_hash = jlm->identity_hash();
+ size_t len = 160 + strlen(current_class_name) + 2*strlen(module_from_name) +
+ strlen(new_class_name) + 2*sizeof(uintx);
+ msg = NEW_RESOURCE_ARRAY(char, len);
+ jio_snprintf(msg, len - 1,
+ "class %s (in module %s) cannot access class %s (in unnamed module @" SIZE_FORMAT_HEX ") because module %s does not read unnamed module @" SIZE_FORMAT_HEX,
+ current_class_name, module_from_name, new_class_name, uintx(identity_hash),
+ module_from_name, uintx(identity_hash));
+ }
+
+ } else if (result == TYPE_NOT_EXPORTED) {
+ assert(new_class->package() != NULL,
+ "Unnamed packages are always exported");
+ const char * package_name =
+ new_class->package()->name()->as_klass_external_name();
+ assert(module_to->is_named(), "Unnamed modules export all packages");
+ if (module_from->is_named()) {
+ size_t len = 118 + strlen(current_class_name) + 2*strlen(module_from_name) +
+ strlen(new_class_name) + 2*strlen(module_to_name) + strlen(package_name);
+ msg = NEW_RESOURCE_ARRAY(char, len);
+ jio_snprintf(msg, len - 1,
+ "class %s (in module %s) cannot access class %s (in module %s) because module %s does not export %s to module %s",
+ current_class_name, module_from_name, new_class_name,
+ module_to_name, module_to_name, package_name, module_from_name);
+ } else {
+ oop jlm = module_from->module();
+ assert(jlm != NULL, "Null jlm in module_from ModuleEntry");
+ intptr_t identity_hash = jlm->identity_hash();
+ size_t len = 170 + strlen(current_class_name) + strlen(new_class_name) +
+ 2*strlen(module_to_name) + strlen(package_name) + 2*sizeof(uintx);
+ msg = NEW_RESOURCE_ARRAY(char, len);
+ jio_snprintf(msg, len - 1,
+ "class %s (in unnamed module @" SIZE_FORMAT_HEX ") cannot access class %s (in module %s) because module %s does not export %s to unnamed module @" SIZE_FORMAT_HEX,
+ current_class_name, uintx(identity_hash), new_class_name, module_to_name,
+ module_to_name, package_name, uintx(identity_hash));
+ }
+ } else {
+ ShouldNotReachHere();
+ }
+ } // result != OTHER_PROBLEM...
+ return msg;
+}
+
+bool Reflection::verify_field_access(const Klass* current_class,
+ const Klass* resolved_class,
+ const Klass* field_class,
+ AccessFlags access,
+ bool classloader_only,
+ bool protected_restriction) {
+ // Verify that current_class can access a field of field_class, where that
+ // field's access bits are "access". We assume that we've already verified
+ // that current_class can access field_class.
+ //
+ // If the classloader_only flag is set, we automatically allow any accesses
+ // in which current_class doesn't have a classloader.
+ //
+ // "resolved_class" is the runtime type of "field_class". Sometimes we don't
+ // need this distinction (e.g. if all we have is the runtime type, or during
+ // class file parsing when we only care about the static type); in that case
+ // callers should ensure that resolved_class == field_class.
+ //
+ if ((current_class == NULL) ||
+ (current_class == field_class) ||
+ access.is_public()) {
+ return true;
+ }
+
+ const Klass* host_class = current_class;
+ if (host_class->is_instance_klass() &&
+ InstanceKlass::cast(host_class)->is_anonymous()) {
+ host_class = InstanceKlass::cast(host_class)->host_klass();
+ assert(host_class != NULL, "Anonymous class has null host class");
+ assert(!(host_class->is_instance_klass() &&
+ InstanceKlass::cast(host_class)->is_anonymous()),
+ "host_class should not be anonymous");
+ }
+ if (host_class == field_class) {
+ return true;
+ }
+
+ if (access.is_protected()) {
+ if (!protected_restriction) {
+ // See if current_class (or outermost host class) is a subclass of field_class
+ // An interface may not access protected members of j.l.Object
+ if (!host_class->is_interface() && host_class->is_subclass_of(field_class)) {
+ if (access.is_static() || // static fields are ok, see 6622385
+ current_class == resolved_class ||
+ field_class == resolved_class ||
+ host_class->is_subclass_of(resolved_class) ||
+ resolved_class->is_subclass_of(host_class)) {
+ return true;
+ }
+ }
+ }
+ }
+
+ if (!access.is_private() && is_same_class_package(current_class, field_class)) {
+ return true;
+ }
+
+ // Allow all accesses from jdk/internal/reflect/MagicAccessorImpl subclasses to
+ // succeed trivially.
+ if (current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
+ return true;
+ }
+
+ return can_relax_access_check_for(
+ current_class, field_class, classloader_only);
+}
+
+bool Reflection::is_same_class_package(const Klass* class1, const Klass* class2) {
+ return InstanceKlass::cast(class1)->is_same_class_package(class2);
+}
+
+// Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not,
+// throw an incompatible class change exception
+// If inner_is_member, require the inner to be a member of the outer.
+// If !inner_is_member, require the inner to be anonymous (a non-member).
+// Caller is responsible for figuring out in advance which case must be true.
+void Reflection::check_for_inner_class(const InstanceKlass* outer, const InstanceKlass* inner,
+ bool inner_is_member, TRAPS) {
+ InnerClassesIterator iter(outer);
+ constantPoolHandle cp (THREAD, outer->constants());
+ for (; !iter.done(); iter.next()) {
+ int ioff = iter.inner_class_info_index();
+ int ooff = iter.outer_class_info_index();
+
+ if (inner_is_member && ioff != 0 && ooff != 0) {
+ Klass* o = cp->klass_at(ooff, CHECK);
+ if (o == outer) {
+ Klass* i = cp->klass_at(ioff, CHECK);
+ if (i == inner) {
+ return;
+ }
+ }
+ }
+ if (!inner_is_member && ioff != 0 && ooff == 0 &&
+ cp->klass_name_at_matches(inner, ioff)) {
+ Klass* i = cp->klass_at(ioff, CHECK);
+ if (i == inner) {
+ return;
+ }
+ }
+ }
+
+ // 'inner' not declared as an inner klass in outer
+ ResourceMark rm(THREAD);
+ Exceptions::fthrow(
+ THREAD_AND_LOCATION,
+ vmSymbols::java_lang_IncompatibleClassChangeError(),
+ "%s and %s disagree on InnerClasses attribute",
+ outer->external_name(),
+ inner->external_name()
+ );
+}
+
+// Utility method converting a single SignatureStream element into java.lang.Class instance
+static oop get_mirror_from_signature(const methodHandle& method,
+ SignatureStream* ss,
+ TRAPS) {
+
+
+ if (T_OBJECT == ss->type() || T_ARRAY == ss->type()) {
+ Symbol* name = ss->as_symbol(CHECK_NULL);
+ oop loader = method->method_holder()->class_loader();
+ oop protection_domain = method->method_holder()->protection_domain();
+ const Klass* k = SystemDictionary::resolve_or_fail(name,
+ Handle(THREAD, loader),
+ Handle(THREAD, protection_domain),
+ true,
+ CHECK_NULL);
+ if (log_is_enabled(Debug, class, resolve)) {
+ trace_class_resolution(k);
+ }
+ return k->java_mirror();
+ }
+
+ assert(ss->type() != T_VOID || ss->at_return_type(),
+ "T_VOID should only appear as return type");
+
+ return java_lang_Class::primitive_mirror(ss->type());
+}
+
+static objArrayHandle get_parameter_types(const methodHandle& method,
+ int parameter_count,
+ oop* return_type,
+ TRAPS) {
+ // Allocate array holding parameter types (java.lang.Class instances)
+ objArrayOop m = oopFactory::new_objArray(SystemDictionary::Class_klass(), parameter_count, CHECK_(objArrayHandle()));
+ objArrayHandle mirrors(THREAD, m);
+ int index = 0;
+ // Collect parameter types
+ ResourceMark rm(THREAD);
+ Symbol* signature = method->signature();
+ SignatureStream ss(signature);
+ while (!ss.at_return_type()) {
+ oop mirror = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));
+ mirrors->obj_at_put(index++, mirror);
+ ss.next();
+ }
+ assert(index == parameter_count, "invalid parameter count");
+ if (return_type != NULL) {
+ // Collect return type as well
+ assert(ss.at_return_type(), "return type should be present");
+ *return_type = get_mirror_from_signature(method, &ss, CHECK_(objArrayHandle()));
+ }
+ return mirrors;
+}
+
+static objArrayHandle get_exception_types(const methodHandle& method, TRAPS) {
+ return method->resolved_checked_exceptions(THREAD);
+}
+
+static Handle new_type(Symbol* signature, Klass* k, TRAPS) {
+ // Basic types
+ BasicType type = vmSymbols::signature_type(signature);
+ if (type != T_OBJECT) {
+ return Handle(THREAD, Universe::java_mirror(type));
+ }
+
+ Klass* result =
+ SystemDictionary::resolve_or_fail(signature,
+ Handle(THREAD, k->class_loader()),
+ Handle(THREAD, k->protection_domain()),
+ true, CHECK_(Handle()));
+
+ if (log_is_enabled(Debug, class, resolve)) {
+ trace_class_resolution(result);
+ }
+
+ oop nt = result->java_mirror();
+ return Handle(THREAD, nt);
+}
+
+
+oop Reflection::new_method(const methodHandle& method, bool for_constant_pool_access, TRAPS) {
+ // Allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods.
+ assert(!method()->is_initializer() ||
+ (for_constant_pool_access && method()->is_static()),
+ "should call new_constructor instead");
+ InstanceKlass* holder = method->method_holder();
+ int slot = method->method_idnum();
+
+ Symbol* signature = method->signature();
+ int parameter_count = ArgumentCount(signature).size();
+ oop return_type_oop = NULL;
+ objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL);
+ if (parameter_types.is_null() || return_type_oop == NULL) return NULL;
+
+ Handle return_type(THREAD, return_type_oop);
+
+ objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
+
+ if (exception_types.is_null()) return NULL;
+
+ Symbol* method_name = method->name();
+ oop name_oop = StringTable::intern(method_name, CHECK_NULL);
+ Handle name = Handle(THREAD, name_oop);
+ if (name == NULL) return NULL;
+
+ const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
+
+ Handle mh = java_lang_reflect_Method::create(CHECK_NULL);
+
+ java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror());
+ java_lang_reflect_Method::set_slot(mh(), slot);
+ java_lang_reflect_Method::set_name(mh(), name());
+ java_lang_reflect_Method::set_return_type(mh(), return_type());
+ java_lang_reflect_Method::set_parameter_types(mh(), parameter_types());
+ java_lang_reflect_Method::set_exception_types(mh(), exception_types());
+ java_lang_reflect_Method::set_modifiers(mh(), modifiers);
+ java_lang_reflect_Method::set_override(mh(), false);
+ if (java_lang_reflect_Method::has_signature_field() &&
+ method->generic_signature() != NULL) {
+ Symbol* gs = method->generic_signature();
+ Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
+ java_lang_reflect_Method::set_signature(mh(), sig());
+ }
+ if (java_lang_reflect_Method::has_annotations_field()) {
+ typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL);
+ java_lang_reflect_Method::set_annotations(mh(), an_oop);
+ }
+ if (java_lang_reflect_Method::has_parameter_annotations_field()) {
+ typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL);
+ java_lang_reflect_Method::set_parameter_annotations(mh(), an_oop);
+ }
+ if (java_lang_reflect_Method::has_annotation_default_field()) {
+ typeArrayOop an_oop = Annotations::make_java_array(method->annotation_default(), CHECK_NULL);
+ java_lang_reflect_Method::set_annotation_default(mh(), an_oop);
+ }
+ if (java_lang_reflect_Method::has_type_annotations_field()) {
+ typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL);
+ java_lang_reflect_Method::set_type_annotations(mh(), an_oop);
+ }
+ return mh();
+}
+
+
+oop Reflection::new_constructor(const methodHandle& method, TRAPS) {
+ assert(method()->is_initializer(), "should call new_method instead");
+
+ InstanceKlass* holder = method->method_holder();
+ int slot = method->method_idnum();
+
+ Symbol* signature = method->signature();
+ int parameter_count = ArgumentCount(signature).size();
+ objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL);
+ if (parameter_types.is_null()) return NULL;
+
+ objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
+ if (exception_types.is_null()) return NULL;
+
+ const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
+
+ Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL);
+
+ java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror());
+ java_lang_reflect_Constructor::set_slot(ch(), slot);
+ java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types());
+ java_lang_reflect_Constructor::set_exception_types(ch(), exception_types());
+ java_lang_reflect_Constructor::set_modifiers(ch(), modifiers);
+ java_lang_reflect_Constructor::set_override(ch(), false);
+ if (java_lang_reflect_Constructor::has_signature_field() &&
+ method->generic_signature() != NULL) {
+ Symbol* gs = method->generic_signature();
+ Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
+ java_lang_reflect_Constructor::set_signature(ch(), sig());
+ }
+ if (java_lang_reflect_Constructor::has_annotations_field()) {
+ typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL);
+ java_lang_reflect_Constructor::set_annotations(ch(), an_oop);
+ }
+ if (java_lang_reflect_Constructor::has_parameter_annotations_field()) {
+ typeArrayOop an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL);
+ java_lang_reflect_Constructor::set_parameter_annotations(ch(), an_oop);
+ }
+ if (java_lang_reflect_Constructor::has_type_annotations_field()) {
+ typeArrayOop an_oop = Annotations::make_java_array(method->type_annotations(), CHECK_NULL);
+ java_lang_reflect_Constructor::set_type_annotations(ch(), an_oop);
+ }
+ return ch();
+}
+
+
+oop Reflection::new_field(fieldDescriptor* fd, TRAPS) {
+ Symbol* field_name = fd->name();
+ oop name_oop = StringTable::intern(field_name, CHECK_NULL);
+ Handle name = Handle(THREAD, name_oop);
+ Symbol* signature = fd->signature();
+ InstanceKlass* holder = fd->field_holder();
+ Handle type = new_type(signature, holder, CHECK_NULL);
+ Handle rh = java_lang_reflect_Field::create(CHECK_NULL);
+
+ java_lang_reflect_Field::set_clazz(rh(), fd->field_holder()->java_mirror());
+ java_lang_reflect_Field::set_slot(rh(), fd->index());
+ java_lang_reflect_Field::set_name(rh(), name());
+ java_lang_reflect_Field::set_type(rh(), type());
+ // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.
+ java_lang_reflect_Field::set_modifiers(rh(), fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS);
+ java_lang_reflect_Field::set_override(rh(), false);
+ if (java_lang_reflect_Field::has_signature_field() &&
+ fd->has_generic_signature()) {
+ Symbol* gs = fd->generic_signature();
+ Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
+ java_lang_reflect_Field::set_signature(rh(), sig());
+ }
+ if (java_lang_reflect_Field::has_annotations_field()) {
+ typeArrayOop an_oop = Annotations::make_java_array(fd->annotations(), CHECK_NULL);
+ java_lang_reflect_Field::set_annotations(rh(), an_oop);
+ }
+ if (java_lang_reflect_Field::has_type_annotations_field()) {
+ typeArrayOop an_oop = Annotations::make_java_array(fd->type_annotations(), CHECK_NULL);
+ java_lang_reflect_Field::set_type_annotations(rh(), an_oop);
+ }
+ return rh();
+}
+
+oop Reflection::new_parameter(Handle method, int index, Symbol* sym,
+ int flags, TRAPS) {
+
+ Handle rh = java_lang_reflect_Parameter::create(CHECK_NULL);
+
+ if(NULL != sym) {
+ Handle name = java_lang_String::create_from_symbol(sym, CHECK_NULL);
+ java_lang_reflect_Parameter::set_name(rh(), name());
+ } else {
+ java_lang_reflect_Parameter::set_name(rh(), NULL);
+ }
+
+ java_lang_reflect_Parameter::set_modifiers(rh(), flags);
+ java_lang_reflect_Parameter::set_executable(rh(), method());
+ java_lang_reflect_Parameter::set_index(rh(), index);
+ return rh();
+}
+
+
+static methodHandle resolve_interface_call(InstanceKlass* klass,
+ const methodHandle& method,
+ Klass* recv_klass,
+ Handle receiver,
+ TRAPS) {
+
+ assert(!method.is_null() , "method should not be null");
+
+ CallInfo info;
+ Symbol* signature = method->signature();
+ Symbol* name = method->name();
+ LinkResolver::resolve_interface_call(info, receiver, recv_klass,
+ LinkInfo(klass, name, signature),
+ true,
+ CHECK_(methodHandle()));
+ return info.selected_method();
+}
+
+// Conversion
+static BasicType basic_type_mirror_to_basic_type(oop basic_type_mirror, TRAPS) {
+ assert(java_lang_Class::is_primitive(basic_type_mirror),
+ "just checking");
+ return java_lang_Class::primitive_type(basic_type_mirror);
+}
+
+// Narrowing of basic types. Used to create correct jvalues for
+// boolean, byte, char and short return return values from interpreter
+// which are returned as ints. Throws IllegalArgumentException.
+static void narrow(jvalue* value, BasicType narrow_type, TRAPS) {
+ switch (narrow_type) {
+ case T_BOOLEAN:
+ value->z = (jboolean) (value->i & 1);
+ return;
+ case T_BYTE:
+ value->b = (jbyte)value->i;
+ return;
+ case T_CHAR:
+ value->c = (jchar)value->i;
+ return;
+ case T_SHORT:
+ value->s = (jshort)value->i;
+ return;
+ default:
+ break; // fail
+ }
+ THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
+}
+
+
+// Method call (shared by invoke_method and invoke_constructor)
+static oop invoke(InstanceKlass* klass,
+ const methodHandle& reflected_method,
+ Handle receiver,
+ bool override,
+ objArrayHandle ptypes,
+ BasicType rtype,
+ objArrayHandle args,
+ bool is_method_invoke,
+ TRAPS) {
+
+ ResourceMark rm(THREAD);
+
+ methodHandle method; // actual method to invoke
+ Klass* target_klass; // target klass, receiver's klass for non-static
+
+ // Ensure klass is initialized
+ klass->initialize(CHECK_NULL);
+
+ bool is_static = reflected_method->is_static();
+ if (is_static) {
+ // ignore receiver argument
+ method = reflected_method;
+ target_klass = klass;
+ } else {
+ // check for null receiver
+ if (receiver.is_null()) {
+ THROW_0(vmSymbols::java_lang_NullPointerException());
+ }
+ // Check class of receiver against class declaring method
+ if (!receiver->is_a(klass)) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class");
+ }
+ // target klass is receiver's klass
+ target_klass = receiver->klass();
+ // no need to resolve if method is private or <init>
+ if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) {
+ method = reflected_method;
+ } else {
+ // resolve based on the receiver
+ if (reflected_method->method_holder()->is_interface()) {
+ // resolve interface call
+ //
+ // Match resolution errors with those thrown due to reflection inlining
+ // Linktime resolution & IllegalAccessCheck already done by Class.getMethod()
+ method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ // Method resolution threw an exception; wrap it in an InvocationTargetException
+ oop resolution_exception = PENDING_EXCEPTION;
+ CLEAR_PENDING_EXCEPTION;
+ // JVMTI has already reported the pending exception
+ // JVMTI internal flag reset is needed in order to report InvocationTargetException
+ if (THREAD->is_Java_thread()) {
+ JvmtiExport::clear_detected_exception((JavaThread*)THREAD);
+ }
+ JavaCallArguments args(Handle(THREAD, resolution_exception));
+ THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
+ vmSymbols::throwable_void_signature(),
+ &args);
+ }
+ } else {
+ // if the method can be overridden, we resolve using the vtable index.
+ assert(!reflected_method->has_itable_index(), "");
+ int index = reflected_method->vtable_index();
+ method = reflected_method;
+ if (index != Method::nonvirtual_vtable_index) {
+ method = methodHandle(THREAD, target_klass->method_at_vtable(index));
+ }
+ if (!method.is_null()) {
+ // Check for abstract methods as well
+ if (method->is_abstract()) {
+ // new default: 6531596
+ ResourceMark rm(THREAD);
+ Handle h_origexception = Exceptions::new_exception(THREAD,
+ vmSymbols::java_lang_AbstractMethodError(),
+ Method::name_and_sig_as_C_string(target_klass,
+ method->name(),
+ method->signature()));
+ JavaCallArguments args(h_origexception);
+ THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
+ vmSymbols::throwable_void_signature(),
+ &args);
+ }
+ }
+ }
+ }
+ }
+
+ // I believe this is a ShouldNotGetHere case which requires
+ // an internal vtable bug. If you ever get this please let Karen know.
+ if (method.is_null()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(),
+ Method::name_and_sig_as_C_string(klass,
+ reflected_method->name(),
+ reflected_method->signature()));
+ }
+
+ assert(ptypes->is_objArray(), "just checking");
+ int args_len = args.is_null() ? 0 : args->length();
+ // Check number of arguments
+ if (ptypes->length() != args_len) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
+ "wrong number of arguments");
+ }
+
+ // Create object to contain parameters for the JavaCall
+ JavaCallArguments java_args(method->size_of_parameters());
+
+ if (!is_static) {
+ java_args.push_oop(receiver);
+ }
+
+ for (int i = 0; i < args_len; i++) {
+ oop type_mirror = ptypes->obj_at(i);
+ oop arg = args->obj_at(i);
+ if (java_lang_Class::is_primitive(type_mirror)) {
+ jvalue value;
+ BasicType ptype = basic_type_mirror_to_basic_type(type_mirror, CHECK_NULL);
+ BasicType atype = Reflection::unbox_for_primitive(arg, &value, CHECK_NULL);
+ if (ptype != atype) {
+ Reflection::widen(&value, atype, ptype, CHECK_NULL);
+ }
+ switch (ptype) {
+ case T_BOOLEAN: java_args.push_int(value.z); break;
+ case T_CHAR: java_args.push_int(value.c); break;
+ case T_BYTE: java_args.push_int(value.b); break;
+ case T_SHORT: java_args.push_int(value.s); break;
+ case T_INT: java_args.push_int(value.i); break;
+ case T_LONG: java_args.push_long(value.j); break;
+ case T_FLOAT: java_args.push_float(value.f); break;
+ case T_DOUBLE: java_args.push_double(value.d); break;
+ default:
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
+ }
+ } else {
+ if (arg != NULL) {
+ Klass* k = java_lang_Class::as_Klass(type_mirror);
+ if (!arg->is_a(k)) {
+ THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
+ "argument type mismatch");
+ }
+ }
+ Handle arg_handle(THREAD, arg); // Create handle for argument
+ java_args.push_oop(arg_handle); // Push handle
+ }
+ }
+
+ assert(java_args.size_of_parameters() == method->size_of_parameters(),
+ "just checking");
+
+ // All oops (including receiver) is passed in as Handles. An potential oop is returned as an
+ // oop (i.e., NOT as an handle)
+ JavaValue result(rtype);
+ JavaCalls::call(&result, method, &java_args, THREAD);
+
+ if (HAS_PENDING_EXCEPTION) {
+ // Method threw an exception; wrap it in an InvocationTargetException
+ oop target_exception = PENDING_EXCEPTION;
+ CLEAR_PENDING_EXCEPTION;
+ // JVMTI has already reported the pending exception
+ // JVMTI internal flag reset is needed in order to report InvocationTargetException
+ if (THREAD->is_Java_thread()) {
+ JvmtiExport::clear_detected_exception((JavaThread*)THREAD);
+ }
+
+ JavaCallArguments args(Handle(THREAD, target_exception));
+ THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
+ vmSymbols::throwable_void_signature(),
+ &args);
+ } else {
+ if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) {
+ narrow((jvalue*)result.get_value_addr(), rtype, CHECK_NULL);
+ }
+ return Reflection::box((jvalue*)result.get_value_addr(), rtype, THREAD);
+ }
+}
+
+// This would be nicer if, say, java.lang.reflect.Method was a subclass
+// of java.lang.reflect.Constructor
+
+oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) {
+ oop mirror = java_lang_reflect_Method::clazz(method_mirror);
+ int slot = java_lang_reflect_Method::slot(method_mirror);
+ bool override = java_lang_reflect_Method::override(method_mirror) != 0;
+ objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror)));
+
+ oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror);
+ BasicType rtype;
+ if (java_lang_Class::is_primitive(return_type_mirror)) {
+ rtype = basic_type_mirror_to_basic_type(return_type_mirror, CHECK_NULL);
+ } else {
+ rtype = T_OBJECT;
+ }
+
+ InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
+ Method* m = klass->method_with_idnum(slot);
+ if (m == NULL) {
+ THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
+ }
+ methodHandle method(THREAD, m);
+
+ return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD);
+}
+
+
+oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) {
+ oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror);
+ int slot = java_lang_reflect_Constructor::slot(constructor_mirror);
+ bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0;
+ objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror)));
+
+ InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
+ Method* m = klass->method_with_idnum(slot);
+ if (m == NULL) {
+ THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
+ }
+ methodHandle method(THREAD, m);
+ assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor");
+
+ // Make sure klass gets initialize
+ klass->initialize(CHECK_NULL);
+
+ // Create new instance (the receiver)
+ klass->check_valid_for_instantiation(false, CHECK_NULL);
+ Handle receiver = klass->allocate_instance_handle(CHECK_NULL);
+
+ // Ignore result from call and return receiver
+ invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL);
+ return receiver();
+}