1 /*
 2  * Copyright (c) 2010, 2021, 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, vmClassID 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, VM_CLASS_ID(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 void jump_to_native_invoker(MacroAssembler* _masm,
60                                      Register nep_reg, Register temp);
61 
62   static Register saved_last_sp_register() {
63     // Should be in sharedRuntime, not here.
64     return noreg;
65   }