1 /*
   2  * Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
   4  * Copyright (c) 2015, Linaro Ltd. All rights reserved.
   5  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   6  *
   7  * This code is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 only, as
   9  * published by the Free Software Foundation.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  *
  25  */
  26 
  27 // Platform-specific definitions for method handles.
  28 // These definitions are inlined into class MethodHandles.
  29 
  30 // Adapters
  31 enum /* platform_dependent_constants */ {
  32   adapter_code_size = 32000 DEBUG_ONLY(+ 120000)
  33 };
  34 
  35 public:
  36 
  37   static void load_klass_from_Class(MacroAssembler* _masm, Register klass_reg);
  38 
  39   static void verify_klass(MacroAssembler* _masm,
  40                            Register obj, SystemDictionary::WKID klass_id,
  41                            const char* error_message = "wrong klass") NOT_DEBUG_RETURN;
  42 
  43   static void verify_method_handle(MacroAssembler* _masm, Register mh_reg) {
  44     verify_klass(_masm, mh_reg, SystemDictionary::WK_KLASS_ENUM_NAME(java_lang_invoke_MethodHandle),
  45                  "reference is a MH");
  46   }
  47 
  48   static void verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) NOT_DEBUG_RETURN;
  49 
  50   // Similar to InterpreterMacroAssembler::jump_from_interpreted.
  51   // Takes care of special dispatch from single stepping too.
  52   static void jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp,
  53                                       bool for_compiler_entry);
  54 
  55   static void jump_to_lambda_form(MacroAssembler* _masm,
  56                                   Register recv, Register method_temp,
  57                                   Register temp2,
  58                                   bool for_compiler_entry);
  59 
  60   static Register saved_last_sp_register() {
  61     // Should be in sharedRuntime, not here.
  62     return noreg;
  63   }