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0
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1 /*
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2 * Copyright 1997-2007 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/_linkResolver.cpp.incl"
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27
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28 //------------------------------------------------------------------------------------------------------------------------
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29 // Implementation of FieldAccessInfo
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30
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31 void FieldAccessInfo::set(KlassHandle klass, symbolHandle name, int field_index, int field_offset,
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32 BasicType field_type, AccessFlags access_flags) {
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33 _klass = klass;
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34 _name = name;
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35 _field_index = field_index;
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36 _field_offset = field_offset;
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37 _field_type = field_type;
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38 _access_flags = access_flags;
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39 }
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40
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41
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42 //------------------------------------------------------------------------------------------------------------------------
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43 // Implementation of CallInfo
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44
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45
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46 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) {
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47 int vtable_index = methodOopDesc::nonvirtual_vtable_index;
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48 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK);
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49 }
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50
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51
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52 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) {
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53 // This is only called for interface methods. If the resolved_method
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54 // comes from java/lang/Object, it can be the subject of a virtual call, so
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55 // we should pick the vtable index from the resolved method.
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56 // Other than that case, there is no valid vtable index to specify.
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57 int vtable_index = methodOopDesc::invalid_vtable_index;
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58 if (resolved_method->method_holder() == SystemDictionary::object_klass()) {
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59 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check");
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60 vtable_index = resolved_method->vtable_index();
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61 }
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62 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK);
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63 }
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64
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65 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) {
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66 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index");
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK);
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68 }
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69
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70 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) {
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71 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond");
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72 _resolved_klass = resolved_klass;
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73 _selected_klass = selected_klass;
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74 _resolved_method = resolved_method;
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75 _selected_method = selected_method;
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76 _vtable_index = vtable_index;
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77 if (CompilationPolicy::mustBeCompiled(selected_method)) {
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78 // Note: with several active threads, the mustBeCompiled may be true
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79 // while canBeCompiled is false; remove assert
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80 // assert(CompilationPolicy::canBeCompiled(selected_method), "cannot compile");
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81 if (THREAD->is_Compiler_thread()) {
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82 // don't force compilation, resolve was on behalf of compiler
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83 return;
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84 }
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85 CompileBroker::compile_method(selected_method, InvocationEntryBci,
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86 methodHandle(), 0, "mustBeCompiled", CHECK);
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87 }
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88 }
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89
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90
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91 //------------------------------------------------------------------------------------------------------------------------
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92 // Klass resolution
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93
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94 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) {
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95 if (!Reflection::verify_class_access(ref_klass->as_klassOop(),
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96 sel_klass->as_klassOop(),
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97 true)) {
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98 ResourceMark rm(THREAD);
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99 Exceptions::fthrow(
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100 THREAD_AND_LOCATION,
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101 vmSymbolHandles::java_lang_IllegalAccessError(),
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102 "tried to access class %s from class %s",
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103 sel_klass->external_name(),
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104 ref_klass->external_name()
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105 );
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106 return;
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107 }
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108 }
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109
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110 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
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111 klassOop result_oop = pool->klass_ref_at(index, CHECK);
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112 result = KlassHandle(THREAD, result_oop);
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113 }
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114
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115 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
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116 klassOop result_oop =
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117 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK);
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118 result = KlassHandle(THREAD, result_oop);
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119 }
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120
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121
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122 //------------------------------------------------------------------------------------------------------------------------
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123 // Method resolution
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124 //
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125 // According to JVM spec. $5.4.3c & $5.4.3d
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126
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127 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
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128 methodOop result_oop = klass->uncached_lookup_method(name(), signature());
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129 result = methodHandle(THREAD, result_oop);
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130 }
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131
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132 // returns first instance method
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133 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
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134 methodOop result_oop = klass->uncached_lookup_method(name(), signature());
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135 result = methodHandle(THREAD, result_oop);
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136 while (!result.is_null() && result->is_static()) {
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137 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super());
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138 result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature()));
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139 }
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140 }
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141
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142
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143 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
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144 ResourceMark rm(THREAD);
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145 klassVtable *vt = instanceKlass::cast(klass())->vtable();
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146 return vt->index_of_miranda(name(), signature());
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147 }
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148
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149 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
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150 instanceKlass *ik = instanceKlass::cast(klass());
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151 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature()));
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152 }
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153
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154 void LinkResolver::check_method_accessability(KlassHandle ref_klass,
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155 KlassHandle resolved_klass,
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156 KlassHandle sel_klass,
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157 methodHandle sel_method,
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158 TRAPS) {
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159
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160 AccessFlags flags = sel_method->access_flags();
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161
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162 // Special case: arrays always override "clone". JVMS 2.15.
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163 // If the resolved klass is an array class, and the declaring class
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164 // is java.lang.Object and the method is "clone", set the flags
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165 // to public.
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166 //
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167 // We'll check for the method name first, as that's most likely
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168 // to be false (so we'll short-circuit out of these tests).
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169 if (sel_method->name() == vmSymbols::clone_name() &&
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170 sel_klass() == SystemDictionary::object_klass() &&
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171 resolved_klass->oop_is_array()) {
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172 // We need to change "protected" to "public".
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173 assert(flags.is_protected(), "clone not protected?");
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174 jint new_flags = flags.as_int();
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175 new_flags = new_flags & (~JVM_ACC_PROTECTED);
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176 new_flags = new_flags | JVM_ACC_PUBLIC;
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177 flags.set_flags(new_flags);
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178 }
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179
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180 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
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181 resolved_klass->as_klassOop(),
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182 sel_klass->as_klassOop(),
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183 flags,
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184 true)) {
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185 ResourceMark rm(THREAD);
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186 Exceptions::fthrow(
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187 THREAD_AND_LOCATION,
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188 vmSymbolHandles::java_lang_IllegalAccessError(),
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189 "tried to access method %s.%s%s from class %s",
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190 sel_klass->external_name(),
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191 sel_method->name()->as_C_string(),
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192 sel_method->signature()->as_C_string(),
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193 ref_klass->external_name()
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194 );
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195 return;
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196 }
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197 }
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198
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199 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass,
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200 constantPoolHandle pool, int index, TRAPS) {
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201
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202 // resolve klass
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203 resolve_klass(resolved_klass, pool, index, CHECK);
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204
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205 symbolHandle method_name (THREAD, pool->name_ref_at(index));
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206 symbolHandle method_signature (THREAD, pool->signature_ref_at(index));
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207 KlassHandle current_klass(THREAD, pool->pool_holder());
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208
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209 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
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210 }
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211
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212 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) {
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213
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214 // resolve klass
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215 resolve_klass(resolved_klass, pool, index, CHECK);
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216 symbolHandle method_name (THREAD, pool->name_ref_at(index));
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217 symbolHandle method_signature (THREAD, pool->signature_ref_at(index));
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218 KlassHandle current_klass(THREAD, pool->pool_holder());
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219
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220 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
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221 }
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222
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223
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224 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass,
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225 symbolHandle method_name, symbolHandle method_signature,
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226 KlassHandle current_klass, bool check_access, TRAPS) {
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227
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228 // 1. check if klass is not interface
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229 if (resolved_klass->is_interface()) {
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230 char buf[200];
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231 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name());
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232 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
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233 }
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234
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235 // 2. lookup method in resolved klass and its super klasses
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236 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
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237
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238 if (resolved_method.is_null()) { // not found in the class hierarchy
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239 // 3. lookup method in all the interfaces implemented by the resolved klass
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240 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
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241
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242 if (resolved_method.is_null()) {
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243 // 4. method lookup failed
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244 ResourceMark rm(THREAD);
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245 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
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246 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
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247 method_name(),
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248 method_signature()));
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249 }
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250 }
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251
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252 // 5. check if method is concrete
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253 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) {
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254 ResourceMark rm(THREAD);
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255 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
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256 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
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257 method_name(),
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258 method_signature()));
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259 }
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260
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261 // 6. access checks, access checking may be turned off when calling from within the VM.
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262 if (check_access) {
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263 assert(current_klass.not_null() , "current_klass should not be null");
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264
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265 // check if method can be accessed by the referring class
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266 check_method_accessability(current_klass,
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267 resolved_klass,
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268 KlassHandle(THREAD, resolved_method->method_holder()),
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269 resolved_method,
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270 CHECK);
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271
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272 // check loader constraints
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273 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
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274 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
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275 {
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276 ResourceMark rm(THREAD);
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277 char* failed_type_name =
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278 SystemDictionary::check_signature_loaders(method_signature, loader,
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279 class_loader, true, CHECK);
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280 if (failed_type_name != NULL) {
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281 const char* msg = "loader constraint violation: when resolving method"
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282 " \"%s\" the class loader (instance of %s) of the current class, %s,"
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283 " and the class loader (instance of %s) for resolved class, %s, have"
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284 " different Class objects for the type %s used in the signature";
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285 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature());
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286 const char* loader1 = SystemDictionary::loader_name(loader());
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287 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
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288 const char* loader2 = SystemDictionary::loader_name(class_loader());
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289 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
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290 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
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291 strlen(current) + strlen(loader2) + strlen(resolved) +
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292 strlen(failed_type_name);
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293 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
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294 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
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295 resolved, failed_type_name);
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296 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
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297 }
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298 }
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299 }
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300 }
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301
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302 void LinkResolver::resolve_interface_method(methodHandle& resolved_method,
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303 KlassHandle resolved_klass,
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304 symbolHandle method_name,
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305 symbolHandle method_signature,
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306 KlassHandle current_klass,
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307 bool check_access, TRAPS) {
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308
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309 // check if klass is interface
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310 if (!resolved_klass->is_interface()) {
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311 char buf[200];
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312 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name());
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313 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
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314 }
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315
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316 // lookup method in this interface or its super, java.lang.Object
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317 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
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318
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319 if (resolved_method.is_null()) {
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320 // lookup method in all the super-interfaces
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321 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
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322 if (resolved_method.is_null()) {
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323 // no method found
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324 ResourceMark rm(THREAD);
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325 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
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326 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
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327 method_name(),
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328 method_signature()));
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329 }
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330 }
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331
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332 if (check_access) {
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333 HandleMark hm(THREAD);
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334 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
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335 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
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336 {
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337 ResourceMark rm(THREAD);
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338 char* failed_type_name =
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339 SystemDictionary::check_signature_loaders(method_signature, loader,
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340 class_loader, true, CHECK);
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341 if (failed_type_name != NULL) {
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342 const char* msg = "loader constraint violation: when resolving "
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343 "interface method \"%s\" the class loader (instance of %s) of the "
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344 "current class, %s, and the class loader (instance of %s) for "
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345 "resolved class, %s, have different Class objects for the type %s "
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346 "used in the signature";
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347 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature());
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348 const char* loader1 = SystemDictionary::loader_name(loader());
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349 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
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350 const char* loader2 = SystemDictionary::loader_name(class_loader());
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351 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
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352 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
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353 strlen(current) + strlen(loader2) + strlen(resolved) +
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354 strlen(failed_type_name);
|
|
|
355 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
|
|
|
356 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
|
|
|
357 resolved, failed_type_name);
|
|
|
358 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
|
|
|
359 }
|
|
|
360 }
|
|
|
361 }
|
|
|
362 }
|
|
|
363
|
|
|
364 //------------------------------------------------------------------------------------------------------------------------
|
|
|
365 // Field resolution
|
|
|
366
|
|
|
367 void LinkResolver::check_field_accessability(KlassHandle ref_klass,
|
|
|
368 KlassHandle resolved_klass,
|
|
|
369 KlassHandle sel_klass,
|
|
|
370 fieldDescriptor& fd,
|
|
|
371 TRAPS) {
|
|
|
372 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
|
|
|
373 resolved_klass->as_klassOop(),
|
|
|
374 sel_klass->as_klassOop(),
|
|
|
375 fd.access_flags(),
|
|
|
376 true)) {
|
|
|
377 ResourceMark rm(THREAD);
|
|
|
378 Exceptions::fthrow(
|
|
|
379 THREAD_AND_LOCATION,
|
|
|
380 vmSymbolHandles::java_lang_IllegalAccessError(),
|
|
|
381 "tried to access field %s.%s from class %s",
|
|
|
382 sel_klass->external_name(),
|
|
|
383 fd.name()->as_C_string(),
|
|
|
384 ref_klass->external_name()
|
|
|
385 );
|
|
|
386 return;
|
|
|
387 }
|
|
|
388 }
|
|
|
389
|
|
|
390 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) {
|
|
|
391 resolve_field(result, pool, index, byte, check_only, true, CHECK);
|
|
|
392 }
|
|
|
393
|
|
|
394 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) {
|
|
|
395 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic ||
|
|
|
396 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode");
|
|
|
397
|
|
|
398 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic);
|
|
|
399 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic);
|
|
|
400
|
|
|
401 // resolve specified klass
|
|
|
402 KlassHandle resolved_klass;
|
|
|
403 if (update_pool) {
|
|
|
404 resolve_klass(resolved_klass, pool, index, CHECK);
|
|
|
405 } else {
|
|
|
406 resolve_klass_no_update(resolved_klass, pool, index, CHECK);
|
|
|
407 }
|
|
|
408 // Load these early in case the resolve of the containing klass fails
|
|
|
409 symbolOop field = pool->name_ref_at(index);
|
|
|
410 symbolHandle field_h (THREAD, field); // preserve in case we need the name
|
|
|
411 symbolOop sig = pool->signature_ref_at(index);
|
|
|
412 // Check if there's a resolved klass containing the field
|
|
|
413 if( resolved_klass.is_null() ) {
|
|
|
414 ResourceMark rm(THREAD);
|
|
|
415 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
|
|
|
416 }
|
|
|
417
|
|
|
418 // Resolve instance field
|
|
|
419 fieldDescriptor fd; // find_field initializes fd if found
|
|
|
420 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd));
|
|
|
421 // check if field exists; i.e., if a klass containing the field def has been selected
|
|
|
422 if (sel_klass.is_null()){
|
|
|
423 ResourceMark rm(THREAD);
|
|
|
424 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
|
|
|
425 }
|
|
|
426
|
|
|
427 // check access
|
|
|
428 KlassHandle ref_klass(THREAD, pool->pool_holder());
|
|
|
429 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK);
|
|
|
430
|
|
|
431 // check for errors
|
|
|
432 if (is_static != fd.is_static()) {
|
|
|
433 char msg[200];
|
|
|
434 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", Klass::cast(resolved_klass())->external_name(), fd.name()->as_C_string());
|
|
|
435 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg);
|
|
|
436 }
|
|
|
437
|
|
|
438 // Final fields can only be accessed from its own class.
|
|
|
439 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) {
|
|
|
440 THROW(vmSymbols::java_lang_IllegalAccessError());
|
|
|
441 }
|
|
|
442
|
|
|
443 // initialize resolved_klass if necessary
|
|
|
444 // note 1: the klass which declared the field must be initialized (i.e, sel_klass)
|
|
|
445 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99)
|
|
|
446 //
|
|
|
447 // note 2: we don't want to force initialization if we are just checking
|
|
|
448 // if the field access is legal; e.g., during compilation
|
|
|
449 if (is_static && !check_only) {
|
|
|
450 sel_klass->initialize(CHECK);
|
|
|
451 }
|
|
|
452
|
|
|
453 {
|
|
|
454 HandleMark hm(THREAD);
|
|
|
455 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader());
|
|
|
456 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader());
|
|
|
457 symbolHandle signature_ref (THREAD, pool->signature_ref_at(index));
|
|
|
458 {
|
|
|
459 ResourceMark rm(THREAD);
|
|
|
460 char* failed_type_name =
|
|
|
461 SystemDictionary::check_signature_loaders(signature_ref,
|
|
|
462 ref_loader, sel_loader,
|
|
|
463 false,
|
|
|
464 CHECK);
|
|
|
465 if (failed_type_name != NULL) {
|
|
|
466 const char* msg = "loader constraint violation: when resolving field"
|
|
|
467 " \"%s\" the class loader (instance of %s) of the referring class, "
|
|
|
468 "%s, and the class loader (instance of %s) for the field's resolved "
|
|
|
469 "type, %s, have different Class objects for that type";
|
|
|
470 char* field_name = field_h()->as_C_string();
|
|
|
471 const char* loader1 = SystemDictionary::loader_name(ref_loader());
|
|
|
472 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string();
|
|
|
473 const char* loader2 = SystemDictionary::loader_name(sel_loader());
|
|
|
474 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) +
|
|
|
475 strlen(sel) + strlen(loader2) + strlen(failed_type_name);
|
|
|
476 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
|
|
|
477 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2,
|
|
|
478 failed_type_name);
|
|
|
479 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
|
|
|
480 }
|
|
|
481 }
|
|
|
482 }
|
|
|
483
|
|
|
484 // return information. note that the klass is set to the actual klass containing the
|
|
|
485 // field, otherwise access of static fields in superclasses will not work.
|
|
|
486 KlassHandle holder (THREAD, fd.field_holder());
|
|
|
487 symbolHandle name (THREAD, fd.name());
|
|
|
488 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags());
|
|
|
489 }
|
|
|
490
|
|
|
491
|
|
|
492 //------------------------------------------------------------------------------------------------------------------------
|
|
|
493 // Invoke resolution
|
|
|
494 //
|
|
|
495 // Naming conventions:
|
|
|
496 //
|
|
|
497 // resolved_method the specified method (i.e., static receiver specified via constant pool index)
|
|
|
498 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class)
|
|
|
499 // resolved_klass the specified klass (i.e., specified via constant pool index)
|
|
|
500 // recv_klass the receiver klass
|
|
|
501
|
|
|
502
|
|
|
503 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name,
|
|
|
504 symbolHandle method_signature, KlassHandle current_klass,
|
|
|
505 bool check_access, bool initialize_class, TRAPS) {
|
|
|
506 methodHandle resolved_method;
|
|
|
507 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
|
|
|
508 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder()));
|
|
|
509
|
|
|
510 // Initialize klass (this should only happen if everything is ok)
|
|
|
511 if (initialize_class && resolved_klass->should_be_initialized()) {
|
|
|
512 resolved_klass->initialize(CHECK);
|
|
|
513 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
|
|
|
514 }
|
|
|
515
|
|
|
516 // setup result
|
|
|
517 result.set_static(resolved_klass, resolved_method, CHECK);
|
|
|
518 }
|
|
|
519
|
|
|
520 // throws linktime exceptions
|
|
|
521 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass,
|
|
|
522 symbolHandle method_name, symbolHandle method_signature,
|
|
|
523 KlassHandle current_klass, bool check_access, TRAPS) {
|
|
|
524
|
|
|
525 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
|
|
|
526 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier");
|
|
|
527
|
|
|
528 // check if static
|
|
|
529 if (!resolved_method->is_static()) {
|
|
|
530 char buf[200];
|
|
|
531 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
|
|
|
532 resolved_method->name(),
|
|
|
533 resolved_method->signature()));
|
|
|
534 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
|
|
|
535 }
|
|
|
536 }
|
|
|
537
|
|
|
538
|
|
|
539 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name,
|
|
|
540 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
|
|
|
541 methodHandle resolved_method;
|
|
|
542 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
|
|
|
543 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK);
|
|
|
544 }
|
|
|
545
|
|
|
546 // throws linktime exceptions
|
|
|
547 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass,
|
|
|
548 symbolHandle method_name, symbolHandle method_signature,
|
|
|
549 KlassHandle current_klass, bool check_access, TRAPS) {
|
|
|
550
|
|
|
551 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
|
|
|
552
|
|
|
553 // check if method name is <init>, that it is found in same klass as static type
|
|
|
554 if (resolved_method->name() == vmSymbols::object_initializer_name() &&
|
|
|
555 resolved_method->method_holder() != resolved_klass()) {
|
|
|
556 ResourceMark rm(THREAD);
|
|
|
557 Exceptions::fthrow(
|
|
|
558 THREAD_AND_LOCATION,
|
|
|
559 vmSymbolHandles::java_lang_NoSuchMethodError(),
|
|
|
560 "%s: method %s%s not found",
|
|
|
561 resolved_klass->external_name(),
|
|
|
562 resolved_method->name()->as_C_string(),
|
|
|
563 resolved_method->signature()->as_C_string()
|
|
|
564 );
|
|
|
565 return;
|
|
|
566 }
|
|
|
567
|
|
|
568 // check if not static
|
|
|
569 if (resolved_method->is_static()) {
|
|
|
570 char buf[200];
|
|
|
571 jio_snprintf(buf, sizeof(buf),
|
|
|
572 "Expecting non-static method %s",
|
|
|
573 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
|
|
|
574 resolved_method->name(),
|
|
|
575 resolved_method->signature()));
|
|
|
576 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
|
|
|
577 }
|
|
|
578 }
|
|
|
579
|
|
|
580 // throws runtime exceptions
|
|
|
581 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
|
|
|
582 KlassHandle current_klass, bool check_access, TRAPS) {
|
|
|
583
|
|
|
584 // resolved method is selected method unless we have an old-style lookup
|
|
|
585 methodHandle sel_method(THREAD, resolved_method());
|
|
|
586
|
|
|
587 // check if this is an old-style super call and do a new lookup if so
|
|
|
588 { KlassHandle method_klass = KlassHandle(THREAD,
|
|
|
589 resolved_method->method_holder());
|
|
|
590
|
|
|
591 if (check_access &&
|
|
|
592 // a) check if ACC_SUPER flag is set for the current class
|
|
|
593 current_klass->is_super() &&
|
|
|
594 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!)
|
|
|
595 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() &&
|
|
|
596 // c) check if the method is not <init>
|
|
|
597 resolved_method->name() != vmSymbols::object_initializer_name()) {
|
|
|
598 // Lookup super method
|
|
|
599 KlassHandle super_klass(THREAD, current_klass->super());
|
|
|
600 lookup_instance_method_in_klasses(sel_method, super_klass,
|
|
|
601 symbolHandle(THREAD, resolved_method->name()),
|
|
|
602 symbolHandle(THREAD, resolved_method->signature()), CHECK);
|
|
|
603 // check if found
|
|
|
604 if (sel_method.is_null()) {
|
|
|
605 ResourceMark rm(THREAD);
|
|
|
606 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
|
|
|
607 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
|
|
|
608 resolved_method->name(),
|
|
|
609 resolved_method->signature()));
|
|
|
610 }
|
|
|
611 }
|
|
|
612 }
|
|
|
613
|
|
|
614 // check if not static
|
|
|
615 if (sel_method->is_static()) {
|
|
|
616 char buf[200];
|
|
|
617 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
|
|
|
618 resolved_method->name(),
|
|
|
619 resolved_method->signature()));
|
|
|
620 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
|
|
|
621 }
|
|
|
622
|
|
|
623 // check if abstract
|
|
|
624 if (sel_method->is_abstract()) {
|
|
|
625 ResourceMark rm(THREAD);
|
|
|
626 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
|
|
|
627 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
|
|
|
628 sel_method->name(),
|
|
|
629 sel_method->signature()));
|
|
|
630 }
|
|
|
631
|
|
|
632 // setup result
|
|
|
633 result.set_static(resolved_klass, sel_method, CHECK);
|
|
|
634 }
|
|
|
635
|
|
|
636 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass,
|
|
|
637 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass,
|
|
|
638 bool check_access, bool check_null_and_abstract, TRAPS) {
|
|
|
639 methodHandle resolved_method;
|
|
|
640 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
|
|
|
641 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK);
|
|
|
642 }
|
|
|
643
|
|
|
644 // throws linktime exceptions
|
|
|
645 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass,
|
|
|
646 symbolHandle method_name, symbolHandle method_signature,
|
|
|
647 KlassHandle current_klass, bool check_access, TRAPS) {
|
|
|
648 // normal method resolution
|
|
|
649 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
|
|
|
650
|
|
|
651 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
|
|
|
652 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
|
|
|
653
|
|
|
654 // check if not static
|
|
|
655 if (resolved_method->is_static()) {
|
|
|
656 char buf[200];
|
|
|
657 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
|
|
|
658 resolved_method->name(),
|
|
|
659 resolved_method->signature()));
|
|
|
660 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
|
|
|
661 }
|
|
|
662 }
|
|
|
663
|
|
|
664 // throws runtime exceptions
|
|
|
665 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result,
|
|
|
666 methodHandle resolved_method,
|
|
|
667 KlassHandle resolved_klass,
|
|
|
668 Handle recv,
|
|
|
669 KlassHandle recv_klass,
|
|
|
670 bool check_null_and_abstract,
|
|
|
671 TRAPS) {
|
|
|
672
|
|
|
673 // setup default return values
|
|
|
674 int vtable_index = methodOopDesc::invalid_vtable_index;
|
|
|
675 methodHandle selected_method;
|
|
|
676
|
|
|
677 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop");
|
|
|
678
|
|
|
679 // runtime method resolution
|
|
|
680 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists
|
|
|
681 THROW(vmSymbols::java_lang_NullPointerException());
|
|
|
682 }
|
|
|
683
|
|
|
684 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
|
|
|
685 // has not been rewritten, and the vtable initialized.
|
|
|
686 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
|
|
|
687
|
|
|
688 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
|
|
|
689 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since
|
|
|
690 // a missing receiver might result in a bogus lookup.
|
|
|
691 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
|
|
|
692
|
|
|
693 // do lookup based on receiver klass using the vtable index
|
|
|
694 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method
|
|
|
695 vtable_index = vtable_index_of_miranda_method(resolved_klass,
|
|
|
696 symbolHandle(THREAD, resolved_method->name()),
|
|
|
697 symbolHandle(THREAD, resolved_method->signature()), CHECK);
|
|
|
698 assert(vtable_index >= 0 , "we should have valid vtable index at this point");
|
|
|
699
|
|
|
700 instanceKlass* inst = instanceKlass::cast(recv_klass());
|
|
|
701 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
|
|
|
702 } else {
|
|
|
703 // at this point we are sure that resolved_method is virtual and not
|
|
|
704 // a miranda method; therefore, it must have a valid vtable index.
|
|
|
705 vtable_index = resolved_method->vtable_index();
|
|
|
706 // We could get a negative vtable_index for final methods,
|
|
|
707 // because as an optimization they are they are never put in the vtable,
|
|
|
708 // unless they override an existing method.
|
|
|
709 // If we do get a negative, it means the resolved method is the the selected
|
|
|
710 // method, and it can never be changed by an override.
|
|
|
711 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) {
|
|
|
712 assert(resolved_method->can_be_statically_bound(), "cannot override this method");
|
|
|
713 selected_method = resolved_method;
|
|
|
714 } else {
|
|
|
715 // recv_klass might be an arrayKlassOop but all vtables start at
|
|
|
716 // the same place. The cast is to avoid virtual call and assertion.
|
|
|
717 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part();
|
|
|
718 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
|
|
|
719 }
|
|
|
720 }
|
|
|
721
|
|
|
722 // check if method exists
|
|
|
723 if (selected_method.is_null()) {
|
|
|
724 ResourceMark rm(THREAD);
|
|
|
725 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
|
|
|
726 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
|
|
|
727 resolved_method->name(),
|
|
|
728 resolved_method->signature()));
|
|
|
729 }
|
|
|
730
|
|
|
731 // check if abstract
|
|
|
732 if (check_null_and_abstract && selected_method->is_abstract()) {
|
|
|
733 ResourceMark rm(THREAD);
|
|
|
734 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
|
|
|
735 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
|
|
|
736 selected_method->name(),
|
|
|
737 selected_method->signature()));
|
|
|
738 }
|
|
|
739
|
|
|
740 // setup result
|
|
|
741 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK);
|
|
|
742 }
|
|
|
743
|
|
|
744 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass,
|
|
|
745 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass,
|
|
|
746 bool check_access, bool check_null_and_abstract, TRAPS) {
|
|
|
747 methodHandle resolved_method;
|
|
|
748 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
|
|
|
749 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK);
|
|
|
750 }
|
|
|
751
|
|
|
752 // throws linktime exceptions
|
|
|
753 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name,
|
|
|
754 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
|
|
|
755 // normal interface method resolution
|
|
|
756 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
|
|
|
757
|
|
|
758 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
|
|
|
759 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
|
|
|
760 }
|
|
|
761
|
|
|
762 // throws runtime exceptions
|
|
|
763 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
|
|
|
764 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) {
|
|
|
765 // check if receiver exists
|
|
|
766 if (check_null_and_abstract && recv.is_null()) {
|
|
|
767 THROW(vmSymbols::java_lang_NullPointerException());
|
|
|
768 }
|
|
|
769
|
|
|
770 // check if receiver klass implements the resolved interface
|
|
|
771 if (!recv_klass->is_subtype_of(resolved_klass())) {
|
|
|
772 char buf[200];
|
|
|
773 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s",
|
|
|
774 (Klass::cast(recv_klass()))->external_name(),
|
|
|
775 (Klass::cast(resolved_klass()))->external_name());
|
|
|
776 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
|
|
|
777 }
|
|
|
778 // do lookup based on receiver klass
|
|
|
779 methodHandle sel_method;
|
|
|
780 lookup_instance_method_in_klasses(sel_method, recv_klass,
|
|
|
781 symbolHandle(THREAD, resolved_method->name()),
|
|
|
782 symbolHandle(THREAD, resolved_method->signature()), CHECK);
|
|
|
783 // check if method exists
|
|
|
784 if (sel_method.is_null()) {
|
|
|
785 ResourceMark rm(THREAD);
|
|
|
786 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
|
|
|
787 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
|
|
|
788 resolved_method->name(),
|
|
|
789 resolved_method->signature()));
|
|
|
790 }
|
|
|
791 // check if public
|
|
|
792 if (!sel_method->is_public()) {
|
|
|
793 ResourceMark rm(THREAD);
|
|
|
794 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(),
|
|
|
795 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
|
|
|
796 sel_method->name(),
|
|
|
797 sel_method->signature()));
|
|
|
798 }
|
|
|
799 // check if abstract
|
|
|
800 if (check_null_and_abstract && sel_method->is_abstract()) {
|
|
|
801 ResourceMark rm(THREAD);
|
|
|
802 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
|
|
|
803 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
|
|
|
804 sel_method->name(),
|
|
|
805 sel_method->signature()));
|
|
|
806 }
|
|
|
807 // setup result
|
|
|
808 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK);
|
|
|
809 }
|
|
|
810
|
|
|
811
|
|
|
812 methodHandle LinkResolver::linktime_resolve_interface_method_or_null(
|
|
|
813 KlassHandle resolved_klass,
|
|
|
814 symbolHandle method_name,
|
|
|
815 symbolHandle method_signature,
|
|
|
816 KlassHandle current_klass,
|
|
|
817 bool check_access) {
|
|
|
818 EXCEPTION_MARK;
|
|
|
819 methodHandle method_result;
|
|
|
820 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
|
|
|
821 if (HAS_PENDING_EXCEPTION) {
|
|
|
822 CLEAR_PENDING_EXCEPTION;
|
|
|
823 return methodHandle();
|
|
|
824 } else {
|
|
|
825 return method_result;
|
|
|
826 }
|
|
|
827 }
|
|
|
828
|
|
|
829 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null(
|
|
|
830 KlassHandle resolved_klass,
|
|
|
831 symbolHandle method_name,
|
|
|
832 symbolHandle method_signature,
|
|
|
833 KlassHandle current_klass,
|
|
|
834 bool check_access) {
|
|
|
835 EXCEPTION_MARK;
|
|
|
836 methodHandle method_result;
|
|
|
837 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
|
|
|
838 if (HAS_PENDING_EXCEPTION) {
|
|
|
839 CLEAR_PENDING_EXCEPTION;
|
|
|
840 return methodHandle();
|
|
|
841 } else {
|
|
|
842 return method_result;
|
|
|
843 }
|
|
|
844 }
|
|
|
845
|
|
|
846 methodHandle LinkResolver::resolve_virtual_call_or_null(
|
|
|
847 KlassHandle receiver_klass,
|
|
|
848 KlassHandle resolved_klass,
|
|
|
849 symbolHandle name,
|
|
|
850 symbolHandle signature,
|
|
|
851 KlassHandle current_klass) {
|
|
|
852 EXCEPTION_MARK;
|
|
|
853 CallInfo info;
|
|
|
854 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
|
|
|
855 if (HAS_PENDING_EXCEPTION) {
|
|
|
856 CLEAR_PENDING_EXCEPTION;
|
|
|
857 return methodHandle();
|
|
|
858 }
|
|
|
859 return info.selected_method();
|
|
|
860 }
|
|
|
861
|
|
|
862 methodHandle LinkResolver::resolve_interface_call_or_null(
|
|
|
863 KlassHandle receiver_klass,
|
|
|
864 KlassHandle resolved_klass,
|
|
|
865 symbolHandle name,
|
|
|
866 symbolHandle signature,
|
|
|
867 KlassHandle current_klass) {
|
|
|
868 EXCEPTION_MARK;
|
|
|
869 CallInfo info;
|
|
|
870 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
|
|
|
871 if (HAS_PENDING_EXCEPTION) {
|
|
|
872 CLEAR_PENDING_EXCEPTION;
|
|
|
873 return methodHandle();
|
|
|
874 }
|
|
|
875 return info.selected_method();
|
|
|
876 }
|
|
|
877
|
|
|
878 int LinkResolver::resolve_virtual_vtable_index(
|
|
|
879 KlassHandle receiver_klass,
|
|
|
880 KlassHandle resolved_klass,
|
|
|
881 symbolHandle name,
|
|
|
882 symbolHandle signature,
|
|
|
883 KlassHandle current_klass) {
|
|
|
884 EXCEPTION_MARK;
|
|
|
885 CallInfo info;
|
|
|
886 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
|
|
|
887 if (HAS_PENDING_EXCEPTION) {
|
|
|
888 CLEAR_PENDING_EXCEPTION;
|
|
|
889 return methodOopDesc::invalid_vtable_index;
|
|
|
890 }
|
|
|
891 return info.vtable_index();
|
|
|
892 }
|
|
|
893
|
|
|
894 methodHandle LinkResolver::resolve_static_call_or_null(
|
|
|
895 KlassHandle resolved_klass,
|
|
|
896 symbolHandle name,
|
|
|
897 symbolHandle signature,
|
|
|
898 KlassHandle current_klass) {
|
|
|
899 EXCEPTION_MARK;
|
|
|
900 CallInfo info;
|
|
|
901 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD);
|
|
|
902 if (HAS_PENDING_EXCEPTION) {
|
|
|
903 CLEAR_PENDING_EXCEPTION;
|
|
|
904 return methodHandle();
|
|
|
905 }
|
|
|
906 return info.selected_method();
|
|
|
907 }
|
|
|
908
|
|
|
909 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature,
|
|
|
910 KlassHandle current_klass) {
|
|
|
911 EXCEPTION_MARK;
|
|
|
912 CallInfo info;
|
|
|
913 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD);
|
|
|
914 if (HAS_PENDING_EXCEPTION) {
|
|
|
915 CLEAR_PENDING_EXCEPTION;
|
|
|
916 return methodHandle();
|
|
|
917 }
|
|
|
918 return info.selected_method();
|
|
|
919 }
|
|
|
920
|
|
|
921
|
|
|
922
|
|
|
923 //------------------------------------------------------------------------------------------------------------------------
|
|
|
924 // ConstantPool entries
|
|
|
925
|
|
|
926 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) {
|
|
|
927 switch (byte) {
|
|
|
928 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break;
|
|
|
929 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break;
|
|
|
930 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break;
|
|
|
931 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break;
|
|
|
932 }
|
|
|
933 return;
|
|
|
934 }
|
|
|
935
|
|
|
936 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature,
|
|
|
937 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) {
|
|
|
938 // resolve klass
|
|
|
939 resolve_klass(resolved_klass, pool, index, CHECK);
|
|
|
940
|
|
|
941 // Get name, signature, and static klass
|
|
|
942 method_name = symbolHandle(THREAD, pool->name_ref_at(index));
|
|
|
943 method_signature = symbolHandle(THREAD, pool->signature_ref_at(index));
|
|
|
944 current_klass = KlassHandle(THREAD, pool->pool_holder());
|
|
|
945 }
|
|
|
946
|
|
|
947
|
|
|
948 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
|
|
|
949 KlassHandle resolved_klass;
|
|
|
950 symbolHandle method_name;
|
|
|
951 symbolHandle method_signature;
|
|
|
952 KlassHandle current_klass;
|
|
|
953 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
|
|
|
954 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
|
|
|
955 }
|
|
|
956
|
|
|
957
|
|
|
958 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
|
|
|
959 KlassHandle resolved_klass;
|
|
|
960 symbolHandle method_name;
|
|
|
961 symbolHandle method_signature;
|
|
|
962 KlassHandle current_klass;
|
|
|
963 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
|
|
|
964 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
|
|
|
965 }
|
|
|
966
|
|
|
967
|
|
|
968 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv,
|
|
|
969 constantPoolHandle pool, int index,
|
|
|
970 TRAPS) {
|
|
|
971
|
|
|
972 KlassHandle resolved_klass;
|
|
|
973 symbolHandle method_name;
|
|
|
974 symbolHandle method_signature;
|
|
|
975 KlassHandle current_klass;
|
|
|
976 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
|
|
|
977 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
|
|
|
978 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
|
|
|
979 }
|
|
|
980
|
|
|
981
|
|
|
982 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) {
|
|
|
983 KlassHandle resolved_klass;
|
|
|
984 symbolHandle method_name;
|
|
|
985 symbolHandle method_signature;
|
|
|
986 KlassHandle current_klass;
|
|
|
987 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
|
|
|
988 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
|
|
|
989 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
|
|
|
990 }
|
|
|
991
|
|
|
992 //------------------------------------------------------------------------------------------------------------------------
|
|
|
993 #ifndef PRODUCT
|
|
|
994
|
|
|
995 void FieldAccessInfo::print() {
|
|
|
996 ResourceMark rm;
|
|
|
997 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset());
|
|
|
998 }
|
|
|
999
|
|
|
1000 #endif
|
