5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // Low-level parser for method handle chains.
26 class MethodHandleChain : StackObj {
27 public:
28 typedef MethodHandles::EntryKind EntryKind;
29
30 private:
31 Handle _root; // original target
32 Handle _method_handle; // current target
33 bool _is_last; // final guy in chain
34 bool _is_bound; // has a bound argument
35 BasicType _arg_type; // if is_bound, the bound argument type
36 int _arg_slot; // if is_bound or is_adapter, affected argument slot
37 jint _conversion; // conversion field of AMH or -1
38 methodHandle _last_method; // if is_last, which method we target
39 Bytecodes::Code _last_invoke; // if is_last, type of invoke
40 const char* _lose_message; // saved argument to lose()
41
42 void set_method_handle(Handle target, TRAPS);
43 void set_last_method(oop target, TRAPS);
44 static BasicType compute_bound_arg_type(oop target, methodOop m, int arg_slot, TRAPS);
394 virtual ArgToken make_invoke(methodOop m, vmIntrinsics::ID iid, Bytecodes::Code op, bool tailcall, int argc, ArgToken* argv, TRAPS);
395
396 // Get a real constant pool.
397 constantPoolHandle get_constant_pool(TRAPS) const;
398
399 // Get a real methodOop.
400 methodHandle get_method_oop(TRAPS) const;
401
402 public:
403 MethodHandleCompiler(Handle root, methodHandle call_method, bool for_invokedynamic, TRAPS);
404
405 // Compile the given MH chain into bytecode.
406 methodHandle compile(TRAPS);
407
408 // Tests if the given class is a MH adapter holder.
409 static bool klass_is_method_handle_adapter_holder(klassOop klass) {
410 return (klass == SystemDictionary::MethodHandle_klass() ||
411 klass == SystemDictionary::InvokeDynamic_klass());
412 }
413 };
|
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_PRIMS_METHODHANDLEWALK_HPP
26 #define SHARE_VM_PRIMS_METHODHANDLEWALK_HPP
27
28 #include "prims/methodHandles.hpp"
29
30 // Low-level parser for method handle chains.
31 class MethodHandleChain : StackObj {
32 public:
33 typedef MethodHandles::EntryKind EntryKind;
34
35 private:
36 Handle _root; // original target
37 Handle _method_handle; // current target
38 bool _is_last; // final guy in chain
39 bool _is_bound; // has a bound argument
40 BasicType _arg_type; // if is_bound, the bound argument type
41 int _arg_slot; // if is_bound or is_adapter, affected argument slot
42 jint _conversion; // conversion field of AMH or -1
43 methodHandle _last_method; // if is_last, which method we target
44 Bytecodes::Code _last_invoke; // if is_last, type of invoke
45 const char* _lose_message; // saved argument to lose()
46
47 void set_method_handle(Handle target, TRAPS);
48 void set_last_method(oop target, TRAPS);
49 static BasicType compute_bound_arg_type(oop target, methodOop m, int arg_slot, TRAPS);
399 virtual ArgToken make_invoke(methodOop m, vmIntrinsics::ID iid, Bytecodes::Code op, bool tailcall, int argc, ArgToken* argv, TRAPS);
400
401 // Get a real constant pool.
402 constantPoolHandle get_constant_pool(TRAPS) const;
403
404 // Get a real methodOop.
405 methodHandle get_method_oop(TRAPS) const;
406
407 public:
408 MethodHandleCompiler(Handle root, methodHandle call_method, bool for_invokedynamic, TRAPS);
409
410 // Compile the given MH chain into bytecode.
411 methodHandle compile(TRAPS);
412
413 // Tests if the given class is a MH adapter holder.
414 static bool klass_is_method_handle_adapter_holder(klassOop klass) {
415 return (klass == SystemDictionary::MethodHandle_klass() ||
416 klass == SystemDictionary::InvokeDynamic_klass());
417 }
418 };
419
420 #endif // SHARE_VM_PRIMS_METHODHANDLEWALK_HPP
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