Fri, 06 Dec 2019 12:42:29 +0100
8235243: handle VS2017 15.9 and VS2019 in abstract_vm_version
8235325: build failure on Linux after 8235243
Reviewed-by: dholmes, mdoerr
1 /*
2 * Copyright (c) 2002, 2011, 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 *
23 */
25 #ifndef SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP
26 #define SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP
28 #include "utilities/globalDefinitions.hpp"
29 #include "runtime/orderAccess.inline.hpp"
31 //
32 // An object for encapsulating the machine/os dependent part of a JavaThread frame state
33 //
34 class JavaThread;
36 class JavaFrameAnchor VALUE_OBJ_CLASS_SPEC {
37 // Too many friends...
38 friend class CallNativeDirectNode;
39 friend class OptoRuntime;
40 friend class Runtime1;
41 friend class StubAssembler;
42 friend class CallRuntimeDirectNode;
43 friend class MacroAssembler;
44 friend class InterpreterGenerator;
45 friend class LIR_Assembler;
46 friend class GraphKit;
47 friend class StubGenerator;
48 friend class JavaThread;
49 friend class frame;
50 friend class VMStructs;
51 friend class BytecodeInterpreter;
52 friend class JavaCallWrapper;
54 private:
55 //
56 // Whenever _last_Java_sp != NULL other anchor fields MUST be valid!
57 // The stack may not be walkable [check with walkable() ] but the values must be valid.
58 // The profiler apparently depends on this.
59 //
60 intptr_t* volatile _last_Java_sp;
62 // Whenever we call from Java to native we can not be assured that the return
63 // address that composes the last_Java_frame will be in an accessible location
64 // so calls from Java to native store that pc (or one good enough to locate
65 // the oopmap) in the frame anchor. Since the frames that call from Java to
66 // native are never deoptimized we never need to patch the pc and so this
67 // is acceptable.
68 volatile address _last_Java_pc;
70 // tells whether the last Java frame is set
71 // It is important that when last_Java_sp != NULL that the rest of the frame
72 // anchor (including platform specific) all be valid.
74 bool has_last_Java_frame() const { return _last_Java_sp != NULL; }
75 // This is very dangerous unless sp == NULL
76 // Invalidate the anchor so that has_last_frame is false
77 // and no one should look at the other fields.
78 void zap(void) { _last_Java_sp = NULL; }
80 #ifdef TARGET_ARCH_x86
81 # include "javaFrameAnchor_x86.hpp"
82 #endif
83 #ifdef TARGET_ARCH_sparc
84 # include "javaFrameAnchor_sparc.hpp"
85 #endif
86 #ifdef TARGET_ARCH_zero
87 # include "javaFrameAnchor_zero.hpp"
88 #endif
89 #ifdef TARGET_ARCH_arm
90 # include "javaFrameAnchor_arm.hpp"
91 #endif
92 #ifdef TARGET_ARCH_ppc
93 # include "javaFrameAnchor_ppc.hpp"
94 #endif
97 public:
98 JavaFrameAnchor() { clear(); }
99 JavaFrameAnchor(JavaFrameAnchor *src) { copy(src); }
101 void set_last_Java_pc(address pc) { _last_Java_pc = pc; }
103 // Assembly stub generation helpers
105 static ByteSize last_Java_sp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_sp); }
106 static ByteSize last_Java_pc_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_pc); }
108 };
110 #endif // SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP