Mercurial > hg > truffle
annotate src/share/vm/runtime/javaFrameAnchor.hpp @ 2904:1916da1d3e11
Merge.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 08 Jun 2011 17:26:49 +0200 |
parents | 1d1603768966 |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
1972 | 24 |
25 #ifndef SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP | |
26 #define SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP | |
27 | |
28 #include "utilities/globalDefinitions.hpp" | |
29 #ifdef TARGET_OS_ARCH_linux_x86 | |
30 # include "orderAccess_linux_x86.inline.hpp" | |
31 #endif | |
32 #ifdef TARGET_OS_ARCH_linux_sparc | |
33 # include "orderAccess_linux_sparc.inline.hpp" | |
34 #endif | |
35 #ifdef TARGET_OS_ARCH_linux_zero | |
36 # include "orderAccess_linux_zero.inline.hpp" | |
37 #endif | |
38 #ifdef TARGET_OS_ARCH_solaris_x86 | |
39 # include "orderAccess_solaris_x86.inline.hpp" | |
40 #endif | |
41 #ifdef TARGET_OS_ARCH_solaris_sparc | |
42 # include "orderAccess_solaris_sparc.inline.hpp" | |
43 #endif | |
44 #ifdef TARGET_OS_ARCH_windows_x86 | |
45 # include "orderAccess_windows_x86.inline.hpp" | |
46 #endif | |
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47 #ifdef TARGET_OS_ARCH_linux_arm |
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48 # include "orderAccess_linux_arm.inline.hpp" |
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49 #endif |
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50 #ifdef TARGET_OS_ARCH_linux_ppc |
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51 # include "orderAccess_linux_ppc.inline.hpp" |
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52 #endif |
0 | 53 // |
54 // An object for encapsulating the machine/os dependent part of a JavaThread frame state | |
55 // | |
56 class JavaThread; | |
57 | |
58 class JavaFrameAnchor VALUE_OBJ_CLASS_SPEC { | |
59 // Too many friends... | |
60 friend class CallNativeDirectNode; | |
61 friend class OptoRuntime; | |
62 friend class Runtime1; | |
63 friend class StubAssembler; | |
64 friend class CallRuntimeDirectNode; | |
65 friend class MacroAssembler; | |
66 friend class InterpreterGenerator; | |
67 friend class LIR_Assembler; | |
68 friend class GraphKit; | |
69 friend class StubGenerator; | |
70 friend class JavaThread; | |
71 friend class frame; | |
72 friend class VMStructs; | |
73 friend class BytecodeInterpreter; | |
74 friend class JavaCallWrapper; | |
75 | |
76 private: | |
77 // | |
78 // Whenever _last_Java_sp != NULL other anchor fields MUST be valid! | |
79 // The stack may not be walkable [check with walkable() ] but the values must be valid. | |
80 // The profiler apparently depends on this. | |
81 // | |
82 intptr_t* volatile _last_Java_sp; | |
83 | |
84 // Whenever we call from Java to native we can not be assured that the return | |
85 // address that composes the last_Java_frame will be in an accessible location | |
86 // so calls from Java to native store that pc (or one good enough to locate | |
87 // the oopmap) in the frame anchor. Since the frames that call from Java to | |
88 // native are never deoptimized we never need to patch the pc and so this | |
89 // is acceptable. | |
90 volatile address _last_Java_pc; | |
91 | |
92 // tells whether the last Java frame is set | |
93 // It is important that when last_Java_sp != NULL that the rest of the frame | |
94 // anchor (including platform specific) all be valid. | |
95 | |
96 bool has_last_Java_frame() const { return _last_Java_sp != NULL; } | |
97 // This is very dangerous unless sp == NULL | |
98 // Invalidate the anchor so that has_last_frame is false | |
99 // and no one should look at the other fields. | |
100 void zap(void) { _last_Java_sp = NULL; } | |
101 | |
1972 | 102 #ifdef TARGET_ARCH_x86 |
103 # include "javaFrameAnchor_x86.hpp" | |
104 #endif | |
105 #ifdef TARGET_ARCH_sparc | |
106 # include "javaFrameAnchor_sparc.hpp" | |
107 #endif | |
108 #ifdef TARGET_ARCH_zero | |
109 # include "javaFrameAnchor_zero.hpp" | |
110 #endif | |
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111 #ifdef TARGET_ARCH_arm |
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112 # include "javaFrameAnchor_arm.hpp" |
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113 #endif |
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114 #ifdef TARGET_ARCH_ppc |
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115 # include "javaFrameAnchor_ppc.hpp" |
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116 #endif |
1972 | 117 |
0 | 118 |
119 public: | |
120 JavaFrameAnchor() { clear(); } | |
121 JavaFrameAnchor(JavaFrameAnchor *src) { copy(src); } | |
122 | |
123 void set_last_Java_pc(address pc) { _last_Java_pc = pc; } | |
124 | |
125 // Assembly stub generation helpers | |
126 | |
127 static ByteSize last_Java_sp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_sp); } | |
128 static ByteSize last_Java_pc_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_pc); } | |
129 | |
130 }; | |
1972 | 131 |
132 #endif // SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP |