1 /*
   2  * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   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 // Platform-specific definitions for method handles.
  26 // These definitions are inlined into class MethodHandles.
  27 
  28 // Adapters
  29 enum /* platform_dependent_constants */ {
  30   adapter_code_size = 18000 NOT_PRODUCT(+ 30000)
  31 };
  32 
  33 // Additional helper methods for MethodHandles code generation:
  34 public:
  35   static void load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp1, Register temp2);
  36 
  37   static void verify_klass(MacroAssembler* _masm,
  38                            Register obj, Register temp1, Register temp2, SystemDictionary::WKID klass_id,
  39                            const char* error_message = "wrong klass") NOT_DEBUG_RETURN;
  40 
  41   static void verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) NOT_DEBUG_RETURN;
  42 
  43   // Similar to InterpreterMacroAssembler::jump_from_interpreted.
  44   // Takes care of special dispatch from single stepping too.
  45   // Rmethod should contain target methodOop.
  46   static void jump_from_method_handle(MacroAssembler* _masm, bool for_compiler_entry);
  47 
  48   static void jump_to_lambda_form(MacroAssembler* _masm,
  49                                   Register recv, Register tmp,
  50                                   bool for_compiler_entry);
  51 
  52   static Register saved_last_sp_register() {
  53     // Should be in sharedRuntime, not here.
  54     return Rsender_sp;
  55   }