1 /*
2 * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * Copyright (c) 2020, 2023, Huawei Technologies Co., Ltd. All rights reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
30 #include "code/vtableStubs.hpp"
31 #include "interp_masm_riscv.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "oops/instanceKlass.hpp"
34 #include "oops/klassVtable.hpp"
35 #include "runtime/sharedRuntime.hpp"
36 #include "vmreg_riscv.inline.hpp"
37 #ifdef COMPILER2
38 #include "opto/runtime.hpp"
39 #endif
40
41 // machine-dependent part of VtableStubs: create VtableStub of correct size and
42 // initialize its code
43
44 #define __ masm->
45
46 #ifndef PRODUCT
47 extern "C" void bad_compiled_vtable_index(JavaThread* thread, oop receiver, int index);
48 #endif
49
50 VtableStub* VtableStubs::create_vtable_stub(int vtable_index) {
51 // Read "A word on VtableStub sizing" in share/code/vtableStubs.hpp for details on stub sizing.
52 const int stub_code_length = code_size_limit(true);
53 VtableStub* s = new(stub_code_length) VtableStub(true, vtable_index);
54 // Can be null if there is no free space in the code cache.
55 if (s == nullptr) {
56 return nullptr;
57 }
58
59 // Count unused bytes in instruction sequences of variable size.
60 // We add them to the computed buffer size in order to avoid
61 // overflow in subsequently generated stubs.
62 address start_pc = nullptr;
63 int slop_bytes = 0;
64 int slop_delta = 0;
65
66 ResourceMark rm;
67 CodeBuffer cb(s->entry_point(), stub_code_length);
68 MacroAssembler* masm = new MacroAssembler(&cb);
69 assert_cond(masm != nullptr);
70
71 #if (!defined(PRODUCT) && defined(COMPILER2))
72 if (CountCompiledCalls) {
73 __ la(t2, ExternalAddress((address) SharedRuntime::nof_megamorphic_calls_addr()));
122 __ ld(t0, Address(xmethod, Method::from_compiled_offset()));
123 __ bnez(t0, L);
124 __ stop("Vtable entry is null");
125 __ bind(L);
126 }
127 #endif // PRODUCT
128
129 // x10: receiver klass
130 // xmethod: Method*
131 // x12: receiver
132 address ame_addr = __ pc();
133 __ ld(t1, Address(xmethod, Method::from_compiled_offset()));
134 __ jr(t1);
135
136 masm->flush();
137 bookkeeping(masm, tty, s, npe_addr, ame_addr, true, vtable_index, slop_bytes, 0);
138
139 return s;
140 }
141
142 VtableStub* VtableStubs::create_itable_stub(int itable_index) {
143 // Read "A word on VtableStub sizing" in share/code/vtableStubs.hpp for details on stub sizing.
144 const int stub_code_length = code_size_limit(false);
145 VtableStub* s = new(stub_code_length) VtableStub(false, itable_index);
146 // Can be null if there is no free space in the code cache.
147 if (s == nullptr) {
148 return nullptr;
149 }
150 // Count unused bytes in instruction sequences of variable size.
151 // We add them to the computed buffer size in order to avoid
152 // overflow in subsequently generated stubs.
153 address start_pc = nullptr;
154 int slop_bytes = 0;
155 int slop_delta = 0;
156
157 ResourceMark rm;
158 CodeBuffer cb(s->entry_point(), stub_code_length);
159 MacroAssembler* masm = new MacroAssembler(&cb);
160 assert_cond(masm != nullptr);
161
162 // Real entry arguments:
163 // t0: CompiledICData
164 // j_rarg0: Receiver
165 // Make sure the move of CompiledICData from t0 to t1 is the frist thing that happens.
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1 /*
2 * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * Copyright (c) 2020, 2023, Huawei Technologies Co., Ltd. All rights reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
30 #include "code/vtableStubs.hpp"
31 #include "interp_masm_riscv.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "oops/instanceKlass.hpp"
34 #include "oops/klassVtable.hpp"
35 #include "runtime/sharedRuntime.hpp"
36 #include "vmreg_riscv.inline.hpp"
37 #ifdef COMPILER2
38 #include "opto/runtime.hpp"
39 #endif
40
41 // machine-dependent part of VtableStubs: create VtableStub of correct size and
42 // initialize its code
43
44 #define __ masm->
45
46 #ifndef PRODUCT
47 extern "C" void bad_compiled_vtable_index(JavaThread* thread, oop receiver, int index);
48 #endif
49
50 VtableStub* VtableStubs::create_vtable_stub(int vtable_index, bool caller_is_c1) {
51 // Read "A word on VtableStub sizing" in share/code/vtableStubs.hpp for details on stub sizing.
52 const int stub_code_length = code_size_limit(true);
53 VtableStub* s = new(stub_code_length) VtableStub(true, vtable_index, caller_is_c1);
54 // Can be null if there is no free space in the code cache.
55 if (s == nullptr) {
56 return nullptr;
57 }
58
59 // Count unused bytes in instruction sequences of variable size.
60 // We add them to the computed buffer size in order to avoid
61 // overflow in subsequently generated stubs.
62 address start_pc = nullptr;
63 int slop_bytes = 0;
64 int slop_delta = 0;
65
66 ResourceMark rm;
67 CodeBuffer cb(s->entry_point(), stub_code_length);
68 MacroAssembler* masm = new MacroAssembler(&cb);
69 assert_cond(masm != nullptr);
70
71 #if (!defined(PRODUCT) && defined(COMPILER2))
72 if (CountCompiledCalls) {
73 __ la(t2, ExternalAddress((address) SharedRuntime::nof_megamorphic_calls_addr()));
122 __ ld(t0, Address(xmethod, Method::from_compiled_offset()));
123 __ bnez(t0, L);
124 __ stop("Vtable entry is null");
125 __ bind(L);
126 }
127 #endif // PRODUCT
128
129 // x10: receiver klass
130 // xmethod: Method*
131 // x12: receiver
132 address ame_addr = __ pc();
133 __ ld(t1, Address(xmethod, Method::from_compiled_offset()));
134 __ jr(t1);
135
136 masm->flush();
137 bookkeeping(masm, tty, s, npe_addr, ame_addr, true, vtable_index, slop_bytes, 0);
138
139 return s;
140 }
141
142 VtableStub* VtableStubs::create_itable_stub(int itable_index, bool caller_is_c1) {
143 // Read "A word on VtableStub sizing" in share/code/vtableStubs.hpp for details on stub sizing.
144 const int stub_code_length = code_size_limit(false);
145 VtableStub* s = new(stub_code_length) VtableStub(false, itable_index, caller_is_c1);
146 // Can be null if there is no free space in the code cache.
147 if (s == nullptr) {
148 return nullptr;
149 }
150 // Count unused bytes in instruction sequences of variable size.
151 // We add them to the computed buffer size in order to avoid
152 // overflow in subsequently generated stubs.
153 address start_pc = nullptr;
154 int slop_bytes = 0;
155 int slop_delta = 0;
156
157 ResourceMark rm;
158 CodeBuffer cb(s->entry_point(), stub_code_length);
159 MacroAssembler* masm = new MacroAssembler(&cb);
160 assert_cond(masm != nullptr);
161
162 // Real entry arguments:
163 // t0: CompiledICData
164 // j_rarg0: Receiver
165 // Make sure the move of CompiledICData from t0 to t1 is the frist thing that happens.
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