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1 /*
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196
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2 * Copyright 1997-2008 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 #include "incls/_precompiled.incl"
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26 #include "incls/_stubCodeGenerator.cpp.incl"
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27
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28
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29 // Implementation of StubCodeDesc
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30
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31 StubCodeDesc* StubCodeDesc::_list = NULL;
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32 int StubCodeDesc::_count = 0;
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33
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34
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35 StubCodeDesc* StubCodeDesc::desc_for(address pc) {
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36 StubCodeDesc* p = _list;
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37 while (p != NULL && !p->contains(pc)) p = p->_next;
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38 // p == NULL || p->contains(pc)
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39 return p;
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40 }
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41
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42
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43 StubCodeDesc* StubCodeDesc::desc_for_index(int index) {
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44 StubCodeDesc* p = _list;
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45 while (p != NULL && p->index() != index) p = p->_next;
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46 return p;
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47 }
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48
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49
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50 const char* StubCodeDesc::name_for(address pc) {
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51 StubCodeDesc* p = desc_for(pc);
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52 return p == NULL ? NULL : p->name();
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53 }
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54
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55
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56 void StubCodeDesc::print() {
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57 tty->print(group());
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58 tty->print("::");
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59 tty->print(name());
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60 tty->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", begin(), end(), size_in_bytes());
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61 }
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62
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63
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64
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65 // Implementation of StubCodeGenerator
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66
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67 StubCodeGenerator::StubCodeGenerator(CodeBuffer* code) {
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68 _masm = new MacroAssembler(code);
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69 _first_stub = _last_stub = NULL;
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70 }
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71
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72 extern "C" {
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73 static int compare_cdesc(const void* void_a, const void* void_b) {
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74 int ai = (*((StubCodeDesc**) void_a))->index();
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75 int bi = (*((StubCodeDesc**) void_b))->index();
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76 return ai - bi;
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77 }
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78 }
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79
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80 StubCodeGenerator::~StubCodeGenerator() {
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81 if (PrintStubCode) {
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82 CodeBuffer* cbuf = _masm->code();
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83 CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start());
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84 if (blob != NULL) {
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85 blob->set_comments(cbuf->comments());
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86 }
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87 bool saw_first = false;
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88 StubCodeDesc* toprint[1000];
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89 int toprint_len = 0;
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90 for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) {
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91 toprint[toprint_len++] = cdesc;
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92 if (cdesc == _first_stub) { saw_first = true; break; }
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93 }
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94 assert(saw_first, "must get both first & last");
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95 // Print in reverse order:
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96 qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc);
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97 for (int i = 0; i < toprint_len; i++) {
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98 StubCodeDesc* cdesc = toprint[i];
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99 cdesc->print();
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100 tty->cr();
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101 Disassembler::decode(cdesc->begin(), cdesc->end());
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102 tty->cr();
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103 }
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104 }
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105 }
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106
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107
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108 void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) {
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109 // default implementation - do nothing
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110 }
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111
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112
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113 void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) {
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114 // default implementation - record the cdesc
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115 if (_first_stub == NULL) _first_stub = cdesc;
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116 _last_stub = cdesc;
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117 }
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118
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119
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120 // Implementation of CodeMark
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121
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122 StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) {
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123 _cgen = cgen;
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124 _cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc());
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125 _cgen->stub_prolog(_cdesc);
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126 // define the stub's beginning (= entry point) to be after the prolog:
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127 _cdesc->set_begin(_cgen->assembler()->pc());
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128 }
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129
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130 StubCodeMark::~StubCodeMark() {
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131 _cgen->assembler()->flush();
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132 _cdesc->set_end(_cgen->assembler()->pc());
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133 assert(StubCodeDesc::_list == _cdesc, "expected order on list");
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134 _cgen->stub_epilog(_cdesc);
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135 VTune::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end());
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136 Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end());
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137
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138 if (JvmtiExport::should_post_dynamic_code_generated()) {
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139 JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end());
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140 }
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141 }
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