annotate src/share/vm/runtime/stubCodeGenerator.cpp @ 6605:4ee06e614636

7116786: RFE: Detailed information on VerifyErrors Summary: Provide additional detail in VerifyError messages Reviewed-by: sspitsyn, acorn
author kamg
date Mon, 06 Aug 2012 15:54:45 -0400
parents f8c9417e3571
children cd3d6a6b95d9
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1 /*
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. 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 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.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "compiler/disassembler.hpp"
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27 #include "oops/oop.inline.hpp"
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28 #include "prims/forte.hpp"
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29 #include "runtime/stubCodeGenerator.hpp"
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30 #ifdef TARGET_ARCH_x86
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31 # include "assembler_x86.inline.hpp"
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32 #endif
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33 #ifdef TARGET_ARCH_sparc
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34 # include "assembler_sparc.inline.hpp"
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35 #endif
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36 #ifdef TARGET_ARCH_zero
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37 # include "assembler_zero.inline.hpp"
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38 #endif
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39 #ifdef TARGET_ARCH_arm
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40 # include "assembler_arm.inline.hpp"
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41 #endif
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42 #ifdef TARGET_ARCH_ppc
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43 # include "assembler_ppc.inline.hpp"
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44 #endif
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47 // Implementation of StubCodeDesc
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48
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49 StubCodeDesc* StubCodeDesc::_list = NULL;
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50 int StubCodeDesc::_count = 0;
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51
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52
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53 StubCodeDesc* StubCodeDesc::desc_for(address pc) {
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54 StubCodeDesc* p = _list;
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55 while (p != NULL && !p->contains(pc)) p = p->_next;
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56 // p == NULL || p->contains(pc)
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57 return p;
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58 }
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59
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61 StubCodeDesc* StubCodeDesc::desc_for_index(int index) {
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62 StubCodeDesc* p = _list;
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63 while (p != NULL && p->index() != index) p = p->_next;
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64 return p;
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65 }
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68 const char* StubCodeDesc::name_for(address pc) {
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69 StubCodeDesc* p = desc_for(pc);
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70 return p == NULL ? NULL : p->name();
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71 }
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73
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74 void StubCodeDesc::print_on(outputStream* st) const {
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75 st->print(group());
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76 st->print("::");
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77 st->print(name());
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78 st->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", begin(), end(), size_in_bytes());
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79 }
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80
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81 // Implementation of StubCodeGenerator
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82
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83 StubCodeGenerator::StubCodeGenerator(CodeBuffer* code, bool print_code) {
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84 _masm = new MacroAssembler(code);
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85 _first_stub = _last_stub = NULL;
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86 _print_code = print_code;
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87 }
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88
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89 extern "C" {
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90 static int compare_cdesc(const void* void_a, const void* void_b) {
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91 int ai = (*((StubCodeDesc**) void_a))->index();
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92 int bi = (*((StubCodeDesc**) void_b))->index();
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93 return ai - bi;
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94 }
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95 }
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96
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97 StubCodeGenerator::~StubCodeGenerator() {
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98 if (PrintStubCode || _print_code) {
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99 CodeBuffer* cbuf = _masm->code();
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100 CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
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101 if (blob != NULL) {
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102 blob->set_comments(cbuf->comments());
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103 }
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104 bool saw_first = false;
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105 StubCodeDesc* toprint[1000];
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106 int toprint_len = 0;
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107 for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {
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108 toprint[toprint_len++] = cdesc;
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109 if (cdesc == _first_stub) { saw_first = true; break; }
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110 }
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111 assert(saw_first, "must get both first & last");
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112 // Print in reverse order:
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113 qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);
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114 for (int i = 0; i < toprint_len; i++) {
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115 StubCodeDesc* cdesc = toprint[i];
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116 cdesc->print();
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117 tty->cr();
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118 Disassembler::decode(cdesc->begin(), cdesc->end());
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119 tty->cr();
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120 }
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121 }
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122 }
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123
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124
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125 void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) {
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126 // default implementation - do nothing
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127 }
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128
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129
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130 void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) {
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131 // default implementation - record the cdesc
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132 if (_first_stub == NULL) _first_stub = cdesc;
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133 _last_stub = cdesc;
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134 }
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135
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136
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137 // Implementation of CodeMark
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138
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139 StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) {
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140 _cgen = cgen;
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141 _cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc());
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142 _cgen->stub_prolog(_cdesc);
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143 // define the stub's beginning (= entry point) to be after the prolog:
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144 _cdesc->set_begin(_cgen->assembler()->pc());
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145 }
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147 StubCodeMark::~StubCodeMark() {
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148 _cgen->assembler()->flush();
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149 _cdesc->set_end(_cgen->assembler()->pc());
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150 assert(StubCodeDesc::_list == _cdesc, "expected order on list");
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151 _cgen->stub_epilog(_cdesc);
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152 Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end());
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153
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154 if (JvmtiExport::should_post_dynamic_code_generated()) {
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155 JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end());
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156 }
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157 }