1 /*

     2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright (c) 2016 SAP SE. All rights reserved.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    25 

    26 // Platform-specific definitions for method handles.

    27 // These definitions are inlined into class MethodHandles.

    28 

    29   // Adapters

    30   enum /* platform_dependent_constants */ {

    31     adapter_code_size = NOT_LP64(23000 DEBUG_ONLY(+ 40000)) LP64_ONLY(35000 DEBUG_ONLY(+ 50000))

    32   };

    33 

    34   // Additional helper methods for MethodHandles code generation:

    35  public:

    36   static void load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp_reg, Register temp2_reg);

    37 

    38   static void verify_klass(MacroAssembler* _masm,

    39                            Register obj_reg, SystemDictionary::WKID klass_id,

    40                            Register temp_reg, Register temp2_reg,

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

    42 

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

    44                                    Register temp_reg, Register temp2_reg) {

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

    46                  temp_reg, temp2_reg,

    47                  "reference is a MH");

    48   }

    49 

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

    51 

    52   // Similar to InterpreterMacroAssembler::jump_from_interpreted.

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

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

    55                                       Register temp, Register temp2,

    56                                       bool for_compiler_entry);

    57 

    58   static void jump_to_lambda_form(MacroAssembler* _masm,

    59                                   Register recv, Register method_temp,

    60                                   Register temp2, Register temp3,

    61                                   bool for_compiler_entry);