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  * 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 = 32000 DEBUG_ONLY(+ 120000)

    32 };

    33 

    34 public:

    35 

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

    37 

    38   static void verify_klass(MacroAssembler* _masm,

    39                            Register obj, SystemDictionary::WKID klass_id,

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

    41 

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

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

    44                  "reference is a MH");

    45   }

    46 

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

    48 

    49   // Similar to InterpreterMacroAssembler::jump_from_interpreted.

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

    51   static void jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp,

    52                                       bool for_compiler_entry);

    53 

    54   static void jump_to_lambda_form(MacroAssembler* _masm,

    55                                   Register recv, Register method_temp,

    56                                   Register temp2,

    57                                   bool for_compiler_entry);

    58 

    59   static Register saved_last_sp_register() {

    60     // Should be in sharedRuntime, not here.

    61     return noreg;

    62   }