1 /*

     2  * Copyright (c) 2011, 2017, 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 = 35000 DEBUG_ONLY(+ 50000)

    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 temp_reg, Register temp2_reg);

    36 

    37   static void verify_klass(MacroAssembler* _masm,

    38                            Register obj_reg, SystemDictionary::WKID klass_id,

    39                            Register temp_reg, Register temp2_reg,

    40                            const char* error_message = "wrong klass") NOT_DEBUG_RETURN;

    41 

    42   static void verify_method_handle(MacroAssembler* _masm, Register mh_reg,

    43                                    Register temp_reg, Register temp2_reg) {

    44     verify_klass(_masm, mh_reg, SystemDictionary::WK_KLASS_ENUM_NAME(java_lang_invoke_MethodHandle),

    45                  temp_reg, temp2_reg,

    46                  "reference is a MH");

    47   }

    48 

    49   static void verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) NOT_DEBUG_RETURN;

    50 

    51   // Similar to InterpreterMacroAssembler::jump_from_interpreted.

    52   // Takes care of special dispatch from single stepping too.

    53   static void jump_from_method_handle(MacroAssembler* _masm, Register method,

    54                                       Register temp, Register temp2,

    55                                       bool for_compiler_entry);

    56 

    57   static void jump_to_lambda_form(MacroAssembler* _masm,

    58                                   Register recv, Register method_temp,

    59                                   Register temp2, Register temp3,

    60                                   bool for_compiler_entry);