1 /*
  2  * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
  3  * Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
  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 #include "asm/assembler.inline.hpp"
 27 #include "code/debugInfoRec.hpp"
 28 #include "code/vtableStubs.hpp"
 29 #include "interpreter/interpreter.hpp"
 30 #include "runtime/interfaceSupport.inline.hpp"
 31 #include "runtime/sharedRuntime.hpp"
 32 #include "runtime/vframeArray.hpp"
 33 #include "vmreg_zero.inline.hpp"
 34 #ifdef COMPILER1
 35 #include "c1/c1_Runtime1.hpp"
 36 #endif
 37 #ifdef COMPILER2
 38 #include "opto/runtime.hpp"
 39 #endif
 40 
 41 
 42 static address zero_null_code_stub() {
 43   address start = ShouldNotCallThisStub();
 44   return start;
 45 }
 46 
 47 int SharedRuntime::java_calling_convention(const BasicType *sig_bt,
 48                                            VMRegPair *regs,
 49                                            int total_args_passed) {
 50   return 0;
 51 }
 52 
 53 int SharedRuntime::java_return_convention(const BasicType *sig_bt,
 54                                            VMRegPair *regs,
 55                                            int total_args_passed) {
 56   Unimplemented();
 57   return 0;
 58 }
 59 
 60 BufferedInlineTypeBlob* SharedRuntime::generate_buffered_inline_type_adapter(const InlineKlass* vk) {
 61   Unimplemented();
 62   return nullptr;
 63 }
 64 
 65 AdapterHandlerEntry* SharedRuntime::generate_i2c2i_adapters(MacroAssembler* masm,
 66                                                             int comp_args_on_stack,
 67                                                             const GrowableArray <SigEntry>* sig,
 68                                                             const VMRegPair* regs,
 69                                                             const GrowableArray <SigEntry>* sig_cc,
 70                                                             const VMRegPair* regs_cc,
 71                                                             const GrowableArray <SigEntry>* sig_cc_ro,
 72                                                             const VMRegPair* regs_cc_ro,
 73                                                             AdapterFingerPrint* fingerprint,
 74                                                             AdapterBlob*& new_adapter,
 75                                                             bool allocate_code_blob) {
 76   if (allocate_code_blob) {
 77     new_adapter = AdapterBlob::create(masm->code(), 0, 0, nullptr);
 78   }
 79   return AdapterHandlerLibrary::new_entry(
 80     fingerprint,
 81     CAST_FROM_FN_PTR(address,zero_null_code_stub),
 82     CAST_FROM_FN_PTR(address,zero_null_code_stub),
 83     CAST_FROM_FN_PTR(address,zero_null_code_stub),
 84     CAST_FROM_FN_PTR(address,zero_null_code_stub),
 85     CAST_FROM_FN_PTR(address,zero_null_code_stub),
 86     CAST_FROM_FN_PTR(address,zero_null_code_stub),
 87     CAST_FROM_FN_PTR(address,zero_null_code_stub));
 88 }
 89 
 90 nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm,
 91                                                 const methodHandle& method,
 92                                                 int compile_id,
 93                                                 BasicType *sig_bt,
 94                                                 VMRegPair *regs,
 95                                                 BasicType ret_type) {
 96   ShouldNotCallThis();
 97   return nullptr;
 98 }
 99 
100 int Deoptimization::last_frame_adjust(int callee_parameters,
101                                       int callee_locals) {
102   return 0;
103 }
104 
105 uint SharedRuntime::out_preserve_stack_slots() {
106   ShouldNotCallThis();
107   return 0;
108 }
109 
110 VMReg SharedRuntime::thread_register() {
111   Unimplemented();
112   return nullptr;
113 }
114 
115 JRT_LEAF(void, zero_stub())
116   ShouldNotCallThis();
117 JRT_END
118 
119 static RuntimeStub* generate_empty_runtime_stub() {
120   return CAST_FROM_FN_PTR(RuntimeStub*,zero_stub);
121 }
122 
123 static SafepointBlob* generate_empty_safepoint_blob() {
124   return CAST_FROM_FN_PTR(SafepointBlob*,zero_stub);
125 }
126 
127 static DeoptimizationBlob* generate_empty_deopt_blob() {
128   return CAST_FROM_FN_PTR(DeoptimizationBlob*,zero_stub);
129 }
130 
131 void SharedRuntime::generate_deopt_blob() {
132   _deopt_blob = generate_empty_deopt_blob();
133 }
134 
135 SafepointBlob* SharedRuntime::generate_handler_blob(SharedStubId id, address call_ptr) {
136   return generate_empty_safepoint_blob();
137 }
138 
139 RuntimeStub* SharedRuntime::generate_resolve_blob(SharedStubId id, address destination) {
140   return generate_empty_runtime_stub();
141 }
142 
143 RuntimeStub* SharedRuntime::generate_throw_exception(SharedStubId id, address runtime_entry) {
144   return generate_empty_runtime_stub();
145 }
146 
147 int SharedRuntime::c_calling_convention(const BasicType *sig_bt,
148                                          VMRegPair *regs,
149                                          int total_args_passed) {
150   ShouldNotCallThis();
151   return 0;
152 }
153 
154 int SharedRuntime::vector_calling_convention(VMRegPair *regs,
155                                              uint num_bits,
156                                              uint total_args_passed) {
157   ShouldNotCallThis();
158   return 0;
159 }
160 
161 #if INCLUDE_JFR
162 RuntimeStub* SharedRuntime::generate_jfr_write_checkpoint() {
163   return nullptr;
164 }
165 
166 RuntimeStub* SharedRuntime::generate_jfr_return_lease() {
167   return nullptr;
168 }
169 
170 #endif // INCLUDE_JFR
171