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 void 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 AdapterHandlerEntry* handler,
74 AdapterBlob*& new_adapter,
75 bool allocate_code_blob) {
76 if (allocate_code_blob) {
77 int entry_offset[AdapterHandlerEntry::ENTRIES_COUNT];
78 assert(AdapterHandlerEntry::ENTRIES_COUNT == 7, "sanity");
79 entry_offset[0] = 0; // i2c_entry offset
80 entry_offset[1] = -1;
81 entry_offset[2] = -1;
82 entry_offset[3] = -1;
83 entry_offset[4] = -1;
84 entry_offset[5] = -1;
85 entry_offset[6] = -1;
86
87 new_adapter = AdapterBlob::create(masm->code(), entry_offset, 0, 0, nullptr);
88 }
89 // foil any attempt to call the i2c, c2i or unverified c2i entries
90 handler->set_entry_points(CAST_FROM_FN_PTR(address,zero_null_code_stub),
91 CAST_FROM_FN_PTR(address,zero_null_code_stub),
92 CAST_FROM_FN_PTR(address,zero_null_code_stub),
93 CAST_FROM_FN_PTR(address,zero_null_code_stub),
94 CAST_FROM_FN_PTR(address,zero_null_code_stub),
95 CAST_FROM_FN_PTR(address,zero_null_code_stub),
96 nullptr);
97 }
98
99 nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm,
100 const methodHandle& method,
101 int compile_id,
102 BasicType *sig_bt,
103 VMRegPair *regs,
104 BasicType ret_type) {
105 ShouldNotCallThis();
106 return nullptr;
107 }
108
109 int Deoptimization::last_frame_adjust(int callee_parameters,
110 int callee_locals) {
111 return 0;
112 }
113
114 uint SharedRuntime::out_preserve_stack_slots() {
115 ShouldNotCallThis();
116 return 0;
117 }
118
119 VMReg SharedRuntime::thread_register() {
120 Unimplemented();
121 return nullptr;
122 }
123
124 JRT_LEAF(void, zero_stub())
125 ShouldNotCallThis();
126 JRT_END
127
128 static RuntimeStub* generate_empty_runtime_stub() {
129 return CAST_FROM_FN_PTR(RuntimeStub*,zero_stub);
130 }
131
132 static SafepointBlob* generate_empty_safepoint_blob() {
133 return CAST_FROM_FN_PTR(SafepointBlob*,zero_stub);
134 }
135
136 static DeoptimizationBlob* generate_empty_deopt_blob() {
137 return CAST_FROM_FN_PTR(DeoptimizationBlob*,zero_stub);
138 }
139
140 void SharedRuntime::generate_deopt_blob() {
141 _deopt_blob = generate_empty_deopt_blob();
142 }
143
144 SafepointBlob* SharedRuntime::generate_handler_blob(StubId id, address call_ptr) {
145 return generate_empty_safepoint_blob();
146 }
147
148 RuntimeStub* SharedRuntime::generate_resolve_blob(StubId id, address destination) {
149 return generate_empty_runtime_stub();
150 }
151
152 RuntimeStub* SharedRuntime::generate_throw_exception(StubId id, address runtime_entry) {
153 return generate_empty_runtime_stub();
154 }
155
156 int SharedRuntime::c_calling_convention(const BasicType *sig_bt,
157 VMRegPair *regs,
158 int total_args_passed) {
159 ShouldNotCallThis();
160 return 0;
161 }
162
163 int SharedRuntime::vector_calling_convention(VMRegPair *regs,
164 uint num_bits,
165 uint total_args_passed) {
166 ShouldNotCallThis();
167 return 0;
168 }
169
170 #if INCLUDE_JFR
171 RuntimeStub* SharedRuntime::generate_jfr_write_checkpoint() {
172 return nullptr;
173 }
174
175 RuntimeStub* SharedRuntime::generate_jfr_return_lease() {
176 return nullptr;
177 }
178
179 #endif // INCLUDE_JFR
180