1 /*
2 * Copyright (c) 2016, 2022, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
38 public final boolean useCompressedOops = getFlag("UseCompressedOops", Boolean.class);
39 public final boolean useCompressedClassPointers = getFlag("UseCompressedClassPointers", Boolean.class);
40
41 public final long narrowOopBase = getFieldValue("CompilerToVM::Data::Universe_narrow_oop_base", Long.class, "address");
42 public final int narrowOopShift = getFieldValue("CompilerToVM::Data::Universe_narrow_oop_shift", Integer.class, "int");
43
44 public final long narrowKlassBase = getFieldValue("CompilerToVM::Data::Universe_narrow_klass_base", Long.class, "address");
45 public final int narrowKlassShift = getFieldValue("CompilerToVM::Data::Universe_narrow_klass_shift", Integer.class, "int");
46
47 public final int classMirrorHandleOffset = getFieldOffset("Klass::_java_mirror", Integer.class, "OopHandle");
48
49 // Checkstyle: stop
50 public final int MARKID_DEOPT_HANDLER_ENTRY = getConstant("CodeInstaller::DEOPT_HANDLER_ENTRY", Integer.class);
51 public final int MARKID_FRAME_COMPLETE = getConstant("CodeInstaller::FRAME_COMPLETE", Integer.class);
52 public final int MARKID_ENTRY_BARRIER_PATCH = getConstant("CodeInstaller::ENTRY_BARRIER_PATCH", Integer.class);
53 public final long handleDeoptStub = getFieldValue("CompilerToVM::Data::SharedRuntime_deopt_blob_unpack", Long.class, "address");
54
55 public final int maxOopMapStackOffset = getFieldValue("CompilerToVM::Data::_max_oop_map_stack_offset", Integer.class, "int");
56 public final int heapWordSize = getConstant("HeapWordSize", Integer.class);
57
58 public final boolean ropProtection;
59
60 private Boolean initNmethodEntryBarrierConcurrentPatch(Architecture arch) {
61 Boolean patchConcurrent = null;
62 if (arch instanceof AArch64 && nmethodEntryBarrier != 0) {
63 Integer patchingType = getFieldValue("CompilerToVM::Data::BarrierSetAssembler_nmethod_patching_type", Integer.class, "int");
64 if (patchingType != null) {
65 // There currently only 2 variants in use that differ only by the presence of a
66 // dmb instruction
67 int stw = getConstant("NMethodPatchingType::stw_instruction_and_data_patch", Integer.class);
68 int conc = getConstant("NMethodPatchingType::conc_data_patch", Integer.class);
69 if (patchingType == stw) {
70 patchConcurrent = false;
71 } else if (patchingType == conc) {
72 patchConcurrent = true;
73 } else {
74 throw new IllegalArgumentException("unsupported barrier sequence " + patchingType);
75 }
76 }
77 }
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1 /*
2 * Copyright (c) 2016, 2023, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
38 public final boolean useCompressedOops = getFlag("UseCompressedOops", Boolean.class);
39 public final boolean useCompressedClassPointers = getFlag("UseCompressedClassPointers", Boolean.class);
40
41 public final long narrowOopBase = getFieldValue("CompilerToVM::Data::Universe_narrow_oop_base", Long.class, "address");
42 public final int narrowOopShift = getFieldValue("CompilerToVM::Data::Universe_narrow_oop_shift", Integer.class, "int");
43
44 public final long narrowKlassBase = getFieldValue("CompilerToVM::Data::Universe_narrow_klass_base", Long.class, "address");
45 public final int narrowKlassShift = getFieldValue("CompilerToVM::Data::Universe_narrow_klass_shift", Integer.class, "int");
46
47 public final int classMirrorHandleOffset = getFieldOffset("Klass::_java_mirror", Integer.class, "OopHandle");
48
49 // Checkstyle: stop
50 public final int MARKID_DEOPT_HANDLER_ENTRY = getConstant("CodeInstaller::DEOPT_HANDLER_ENTRY", Integer.class);
51 public final int MARKID_FRAME_COMPLETE = getConstant("CodeInstaller::FRAME_COMPLETE", Integer.class);
52 public final int MARKID_ENTRY_BARRIER_PATCH = getConstant("CodeInstaller::ENTRY_BARRIER_PATCH", Integer.class);
53 public final long handleDeoptStub = getFieldValue("CompilerToVM::Data::SharedRuntime_deopt_blob_unpack", Long.class, "address");
54
55 public final int maxOopMapStackOffset = getFieldValue("CompilerToVM::Data::_max_oop_map_stack_offset", Integer.class, "int");
56 public final int heapWordSize = getConstant("HeapWordSize", Integer.class);
57
58 // Check field with intx declaration is the same as int64_t.
59 public final int heldMonitorCountOffset = getFieldOffset("JavaThread::_held_monitor_count", Integer.class, "int64_t");
60
61 public final boolean ropProtection;
62
63 private Boolean initNmethodEntryBarrierConcurrentPatch(Architecture arch) {
64 Boolean patchConcurrent = null;
65 if (arch instanceof AArch64 && nmethodEntryBarrier != 0) {
66 Integer patchingType = getFieldValue("CompilerToVM::Data::BarrierSetAssembler_nmethod_patching_type", Integer.class, "int");
67 if (patchingType != null) {
68 // There currently only 2 variants in use that differ only by the presence of a
69 // dmb instruction
70 int stw = getConstant("NMethodPatchingType::stw_instruction_and_data_patch", Integer.class);
71 int conc = getConstant("NMethodPatchingType::conc_data_patch", Integer.class);
72 if (patchingType == stw) {
73 patchConcurrent = false;
74 } else if (patchingType == conc) {
75 patchConcurrent = true;
76 } else {
77 throw new IllegalArgumentException("unsupported barrier sequence " + patchingType);
78 }
79 }
80 }
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