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annotate src/share/vm/c1x/c1x_CodeInstaller.hpp @ 1938:1aa5b22a7716

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Support for custom stack area (needed for deoptimization).
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Mon, 27 Dec 2010 14:22:55 +0100
parents 8d88c9ac9247
children 177398c6147d
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1 /*
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2 * Copyright 2000-2010 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 /*
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26 * This class handles the conversion from a CiTargetMethod to a CodeBlob or an nmethod.
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27 */
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28 class CodeInstaller {
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29 private:
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30 // these need to correspond to HotSpotXirGenerator.java
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31 enum MarkId {
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32 MARK_VERIFIED_ENTRY = 0x0001,
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33 MARK_UNVERIFIED_ENTRY = 0x0002,
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34 MARK_OSR_ENTRY = 0x0003,
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35 MARK_UNWIND_ENTRY = 0x0004,
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36 MARK_EXCEPTION_HANDLER_ENTRY = 0x0005,
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37 MARK_DEOPT_HANDLER_ENTRY = 0x0006,
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38 MARK_STATIC_CALL_STUB = 0x1000,
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39 MARK_INVOKE_INVALID = 0x2000,
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40 MARK_INVOKEINTERFACE = 0x2001,
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41 MARK_INVOKESTATIC = 0x2002,
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42 MARK_INVOKESPECIAL = 0x2003,
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43 MARK_INVOKEVIRTUAL = 0x2004,
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44 MARK_IMPLICIT_NULL = 0x3000,
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45 MARK_KLASS_PATCHING = 0x4000,
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46 MARK_DUMMY_OOP_RELOCATION = 0x4001,
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47 MARK_ACCESS_FIELD_PATCHING = 0x4002
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48 };
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49
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50 ciEnv* _env;
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51
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52 oop _citarget_method;
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53 oop _hotspot_method;
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54 oop _name;
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55 arrayOop _sites;
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56 arrayOop _exception_handlers;
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57 CodeOffsets _offsets;
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58
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59 arrayOop _code;
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60 jint _code_size;
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61 jint _frame_size;
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62 jint _custom_stack_area_offset;
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63 jint _parameter_count;
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64 jint _constants_size;
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65 jint _total_size;
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66
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67 MarkId _next_call_type;
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68 address _invoke_mark_pc;
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69
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70 CodeSection* _instructions;
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71 CodeSection* _constants;
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72
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73 OopRecorder* _oop_recorder;
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74 DebugInformationRecorder* _debug_recorder;
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75 Dependencies* _dependencies;
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76 ExceptionHandlerTable _exception_handler_table;
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77 ImplicitExceptionTable _implicit_exception_table;
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78
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79 public:
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80
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81 // constructor used to create a method
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82 CodeInstaller(Handle target_method);
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83
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84 // constructor used to create a stub
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85 CodeInstaller(Handle target_method, jlong& id);
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86
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87 private:
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88 // extract the fields of the CiTargetMethod
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89 void initialize_fields(Handle target_method);
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90
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91 // perform data and call relocation on the CodeBuffer
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92 void initialize_buffer(CodeBuffer& buffer);
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93
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94 void site_Safepoint(CodeBuffer& buffer, jint pc_offset, oop site);
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95 void site_Call(CodeBuffer& buffer, jint pc_offset, oop site);
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96 void site_DataPatch(CodeBuffer& buffer, jint pc_offset, oop site);
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97 void site_Mark(CodeBuffer& buffer, jint pc_offset, oop site);
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98
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99 void record_scope(jint pc_offset, oop code_pos);
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100
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101 void process_exception_handlers();
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102
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103 };