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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/_classFileParser.cpp.incl"
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27
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28 // We generally try to create the oops directly when parsing, rather than allocating
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29 // temporary data structures and copying the bytes twice. A temporary area is only
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30 // needed when parsing utf8 entries in the constant pool and when parsing line number
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31 // tables.
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32
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33 // We add assert in debug mode when class format is not checked.
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34
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35 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE
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36 #define JAVA_MIN_SUPPORTED_VERSION 45
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37 #define JAVA_MAX_SUPPORTED_VERSION 50
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38 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0
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39
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40 // Used for two backward compatibility reasons:
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41 // - to check for new additions to the class file format in JDK1.5
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42 // - to check for bug fixes in the format checker in JDK1.5
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43 #define JAVA_1_5_VERSION 49
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44
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45 // Used for backward compatibility reasons:
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46 // - to check for javac bug fixes that happened after 1.5
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47 #define JAVA_6_VERSION 50
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48
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49
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50 void ClassFileParser::parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS) {
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51 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize
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52 // this function (_current can be allocated in a register, with scalar
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53 // replacement of aggregates). The _current pointer is copied back to
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54 // stream() when this function returns. DON'T call another method within
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55 // this method that uses stream().
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56 ClassFileStream* cfs0 = stream();
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57 ClassFileStream cfs1 = *cfs0;
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58 ClassFileStream* cfs = &cfs1;
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59 #ifdef ASSERT
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60 u1* old_current = cfs0->current();
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61 #endif
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62
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63 // Used for batching symbol allocations.
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64 const char* names[SymbolTable::symbol_alloc_batch_size];
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65 int lengths[SymbolTable::symbol_alloc_batch_size];
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66 int indices[SymbolTable::symbol_alloc_batch_size];
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67 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size];
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68 int names_count = 0;
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69
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70 // parsing Index 0 is unused
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71 for (int index = 1; index < length; index++) {
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72 // Each of the following case guarantees one more byte in the stream
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73 // for the following tag or the access_flags following constant pool,
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74 // so we don't need bounds-check for reading tag.
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75 u1 tag = cfs->get_u1_fast();
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76 switch (tag) {
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77 case JVM_CONSTANT_Class :
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78 {
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79 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags
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80 u2 name_index = cfs->get_u2_fast();
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81 cp->klass_index_at_put(index, name_index);
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82 }
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83 break;
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84 case JVM_CONSTANT_Fieldref :
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85 {
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86 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags
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87 u2 class_index = cfs->get_u2_fast();
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88 u2 name_and_type_index = cfs->get_u2_fast();
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89 cp->field_at_put(index, class_index, name_and_type_index);
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90 }
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91 break;
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92 case JVM_CONSTANT_Methodref :
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93 {
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94 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags
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95 u2 class_index = cfs->get_u2_fast();
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96 u2 name_and_type_index = cfs->get_u2_fast();
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97 cp->method_at_put(index, class_index, name_and_type_index);
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98 }
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99 break;
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100 case JVM_CONSTANT_InterfaceMethodref :
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101 {
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102 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags
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103 u2 class_index = cfs->get_u2_fast();
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104 u2 name_and_type_index = cfs->get_u2_fast();
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105 cp->interface_method_at_put(index, class_index, name_and_type_index);
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106 }
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107 break;
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108 case JVM_CONSTANT_String :
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109 {
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110 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags
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111 u2 string_index = cfs->get_u2_fast();
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112 cp->string_index_at_put(index, string_index);
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113 }
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114 break;
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115 case JVM_CONSTANT_Integer :
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116 {
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117 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags
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118 u4 bytes = cfs->get_u4_fast();
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119 cp->int_at_put(index, (jint) bytes);
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120 }
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121 break;
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122 case JVM_CONSTANT_Float :
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123 {
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124 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags
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125 u4 bytes = cfs->get_u4_fast();
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126 cp->float_at_put(index, *(jfloat*)&bytes);
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127 }
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128 break;
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129 case JVM_CONSTANT_Long :
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130 // A mangled type might cause you to overrun allocated memory
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131 guarantee_property(index+1 < length,
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132 "Invalid constant pool entry %u in class file %s",
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133 index, CHECK);
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134 {
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135 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags
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136 u8 bytes = cfs->get_u8_fast();
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137 cp->long_at_put(index, bytes);
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138 }
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139 index++; // Skip entry following eigth-byte constant, see JVM book p. 98
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140 break;
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141 case JVM_CONSTANT_Double :
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142 // A mangled type might cause you to overrun allocated memory
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143 guarantee_property(index+1 < length,
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144 "Invalid constant pool entry %u in class file %s",
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145 index, CHECK);
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146 {
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147 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags
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148 u8 bytes = cfs->get_u8_fast();
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149 cp->double_at_put(index, *(jdouble*)&bytes);
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150 }
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151 index++; // Skip entry following eigth-byte constant, see JVM book p. 98
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152 break;
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153 case JVM_CONSTANT_NameAndType :
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154 {
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155 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags
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156 u2 name_index = cfs->get_u2_fast();
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157 u2 signature_index = cfs->get_u2_fast();
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158 cp->name_and_type_at_put(index, name_index, signature_index);
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159 }
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160 break;
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161 case JVM_CONSTANT_Utf8 :
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162 {
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163 cfs->guarantee_more(2, CHECK); // utf8_length
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164 u2 utf8_length = cfs->get_u2_fast();
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165 u1* utf8_buffer = cfs->get_u1_buffer();
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166 assert(utf8_buffer != NULL, "null utf8 buffer");
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167 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward.
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168 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags
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169 cfs->skip_u1_fast(utf8_length);
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170 // Before storing the symbol, make sure it's legal
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171 if (_need_verify) {
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172 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK);
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173 }
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174
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175 unsigned int hash;
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176 symbolOop result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash);
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177 if (result == NULL) {
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178 names[names_count] = (char*)utf8_buffer;
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179 lengths[names_count] = utf8_length;
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180 indices[names_count] = index;
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181 hashValues[names_count++] = hash;
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182 if (names_count == SymbolTable::symbol_alloc_batch_size) {
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183 oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK);
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184 names_count = 0;
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185 }
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186 } else {
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187 cp->symbol_at_put(index, result);
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188 }
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189 }
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190 break;
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191 default:
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192 classfile_parse_error(
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193 "Unknown constant tag %u in class file %s", tag, CHECK);
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194 break;
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195 }
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196 }
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197
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198 // Allocate the remaining symbols
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199 if (names_count > 0) {
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200 oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK);
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201 }
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202
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203 // Copy _current pointer of local copy back to stream().
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204 #ifdef ASSERT
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205 assert(cfs0->current() == old_current, "non-exclusive use of stream()");
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206 #endif
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207 cfs0->set_current(cfs1.current());
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208 }
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209
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210 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); }
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211
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212 constantPoolHandle ClassFileParser::parse_constant_pool(TRAPS) {
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213 ClassFileStream* cfs = stream();
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214 constantPoolHandle nullHandle;
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215
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216 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag
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217 u2 length = cfs->get_u2_fast();
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218 guarantee_property(
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219 length >= 1, "Illegal constant pool size %u in class file %s",
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220 length, CHECK_(nullHandle));
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221 constantPoolOop constant_pool =
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222 oopFactory::new_constantPool(length, CHECK_(nullHandle));
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223 constantPoolHandle cp (THREAD, constant_pool);
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224
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225 cp->set_partially_loaded(); // Enables heap verify to work on partial constantPoolOops
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226
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227 // parsing constant pool entries
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228 parse_constant_pool_entries(cp, length, CHECK_(nullHandle));
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229
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230 int index = 1; // declared outside of loops for portability
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231
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232 // first verification pass - validate cross references and fixup class and string constants
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233 for (index = 1; index < length; index++) { // Index 0 is unused
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234 switch (cp->tag_at(index).value()) {
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235 case JVM_CONSTANT_Class :
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236 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present
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237 break;
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238 case JVM_CONSTANT_Fieldref :
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239 // fall through
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240 case JVM_CONSTANT_Methodref :
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241 // fall through
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242 case JVM_CONSTANT_InterfaceMethodref : {
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243 if (!_need_verify) break;
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244 int klass_ref_index = cp->klass_ref_index_at(index);
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245 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index);
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246 check_property(valid_cp_range(klass_ref_index, length) &&
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247 cp->tag_at(klass_ref_index).is_klass_reference(),
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248 "Invalid constant pool index %u in class file %s",
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249 klass_ref_index,
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250 CHECK_(nullHandle));
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251 check_property(valid_cp_range(name_and_type_ref_index, length) &&
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252 cp->tag_at(name_and_type_ref_index).is_name_and_type(),
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253 "Invalid constant pool index %u in class file %s",
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254 name_and_type_ref_index,
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255 CHECK_(nullHandle));
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256 break;
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257 }
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258 case JVM_CONSTANT_String :
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259 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present
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260 break;
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261 case JVM_CONSTANT_Integer :
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262 break;
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263 case JVM_CONSTANT_Float :
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264 break;
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265 case JVM_CONSTANT_Long :
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266 case JVM_CONSTANT_Double :
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267 index++;
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268 check_property(
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269 (index < length && cp->tag_at(index).is_invalid()),
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270 "Improper constant pool long/double index %u in class file %s",
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271 index, CHECK_(nullHandle));
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272 break;
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273 case JVM_CONSTANT_NameAndType : {
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274 if (!_need_verify) break;
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275 int name_ref_index = cp->name_ref_index_at(index);
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276 int signature_ref_index = cp->signature_ref_index_at(index);
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277 check_property(
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278 valid_cp_range(name_ref_index, length) &&
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279 cp->tag_at(name_ref_index).is_utf8(),
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280 "Invalid constant pool index %u in class file %s",
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281 name_ref_index, CHECK_(nullHandle));
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282 check_property(
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283 valid_cp_range(signature_ref_index, length) &&
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284 cp->tag_at(signature_ref_index).is_utf8(),
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285 "Invalid constant pool index %u in class file %s",
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286 signature_ref_index, CHECK_(nullHandle));
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287 break;
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288 }
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289 case JVM_CONSTANT_Utf8 :
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290 break;
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291 case JVM_CONSTANT_UnresolvedClass : // fall-through
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292 case JVM_CONSTANT_UnresolvedClassInError:
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293 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present
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294 break;
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295 case JVM_CONSTANT_ClassIndex :
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296 {
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297 int class_index = cp->klass_index_at(index);
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298 check_property(
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299 valid_cp_range(class_index, length) &&
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300 cp->tag_at(class_index).is_utf8(),
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301 "Invalid constant pool index %u in class file %s",
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302 class_index, CHECK_(nullHandle));
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303 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index));
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304 }
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305 break;
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306 case JVM_CONSTANT_UnresolvedString :
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307 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present
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308 break;
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309 case JVM_CONSTANT_StringIndex :
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310 {
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311 int string_index = cp->string_index_at(index);
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312 check_property(
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313 valid_cp_range(string_index, length) &&
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314 cp->tag_at(string_index).is_utf8(),
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315 "Invalid constant pool index %u in class file %s",
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316 string_index, CHECK_(nullHandle));
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317 symbolOop sym = cp->symbol_at(string_index);
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318 cp->unresolved_string_at_put(index, sym);
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319 }
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320 break;
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321 default:
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322 fatal1("bad constant pool tag value %u", cp->tag_at(index).value());
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323 ShouldNotReachHere();
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324 break;
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325 } // end of switch
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326 } // end of for
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327
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328 if (!_need_verify) {
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329 return cp;
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330 }
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331
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332 // second verification pass - checks the strings are of the right format.
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333 for (index = 1; index < length; index++) {
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334 jbyte tag = cp->tag_at(index).value();
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335 switch (tag) {
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336 case JVM_CONSTANT_UnresolvedClass: {
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337 symbolHandle class_name(THREAD, cp->unresolved_klass_at(index));
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338 verify_legal_class_name(class_name, CHECK_(nullHandle));
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339 break;
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340 }
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341 case JVM_CONSTANT_Fieldref:
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342 case JVM_CONSTANT_Methodref:
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343 case JVM_CONSTANT_InterfaceMethodref: {
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344 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index);
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345 // already verified to be utf8
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346 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index);
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347 // already verified to be utf8
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348 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index);
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349 symbolHandle name(THREAD, cp->symbol_at(name_ref_index));
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350 symbolHandle signature(THREAD, cp->symbol_at(signature_ref_index));
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351 if (tag == JVM_CONSTANT_Fieldref) {
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352 verify_legal_field_name(name, CHECK_(nullHandle));
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353 verify_legal_field_signature(name, signature, CHECK_(nullHandle));
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354 } else {
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355 verify_legal_method_name(name, CHECK_(nullHandle));
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356 verify_legal_method_signature(name, signature, CHECK_(nullHandle));
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357 if (tag == JVM_CONSTANT_Methodref) {
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358 // 4509014: If a class method name begins with '<', it must be "<init>".
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359 assert(!name.is_null(), "method name in constant pool is null");
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360 unsigned int name_len = name->utf8_length();
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361 assert(name_len > 0, "bad method name"); // already verified as legal name
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362 if (name->byte_at(0) == '<') {
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363 if (name() != vmSymbols::object_initializer_name()) {
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364 classfile_parse_error(
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365 "Bad method name at constant pool index %u in class file %s",
|
|
|
366 name_ref_index, CHECK_(nullHandle));
|
|
|
367 }
|
|
|
368 }
|
|
|
369 }
|
|
|
370 }
|
|
|
371 break;
|
|
|
372 }
|
|
|
373 } // end of switch
|
|
|
374 } // end of for
|
|
|
375
|
|
|
376 return cp;
|
|
|
377 }
|
|
|
378
|
|
|
379
|
|
|
380 class NameSigHash: public ResourceObj {
|
|
|
381 public:
|
|
|
382 symbolOop _name; // name
|
|
|
383 symbolOop _sig; // signature
|
|
|
384 NameSigHash* _next; // Next entry in hash table
|
|
|
385 };
|
|
|
386
|
|
|
387
|
|
|
388 #define HASH_ROW_SIZE 256
|
|
|
389
|
|
|
390 unsigned int hash(symbolOop name, symbolOop sig) {
|
|
|
391 unsigned int raw_hash = 0;
|
|
|
392 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2);
|
|
|
393 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize;
|
|
|
394
|
|
|
395 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE;
|
|
|
396 }
|
|
|
397
|
|
|
398
|
|
|
399 void initialize_hashtable(NameSigHash** table) {
|
|
|
400 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE);
|
|
|
401 }
|
|
|
402
|
|
|
403 // Return false if the name/sig combination is found in table.
|
|
|
404 // Return true if no duplicate is found. And name/sig is added as a new entry in table.
|
|
|
405 // The old format checker uses heap sort to find duplicates.
|
|
|
406 // NOTE: caller should guarantee that GC doesn't happen during the life cycle
|
|
|
407 // of table since we don't expect symbolOop's to move.
|
|
|
408 bool put_after_lookup(symbolOop name, symbolOop sig, NameSigHash** table) {
|
|
|
409 assert(name != NULL, "name in constant pool is NULL");
|
|
|
410
|
|
|
411 // First lookup for duplicates
|
|
|
412 int index = hash(name, sig);
|
|
|
413 NameSigHash* entry = table[index];
|
|
|
414 while (entry != NULL) {
|
|
|
415 if (entry->_name == name && entry->_sig == sig) {
|
|
|
416 return false;
|
|
|
417 }
|
|
|
418 entry = entry->_next;
|
|
|
419 }
|
|
|
420
|
|
|
421 // No duplicate is found, allocate a new entry and fill it.
|
|
|
422 entry = new NameSigHash();
|
|
|
423 entry->_name = name;
|
|
|
424 entry->_sig = sig;
|
|
|
425
|
|
|
426 // Insert into hash table
|
|
|
427 entry->_next = table[index];
|
|
|
428 table[index] = entry;
|
|
|
429
|
|
|
430 return true;
|
|
|
431 }
|
|
|
432
|
|
|
433
|
|
|
434 objArrayHandle ClassFileParser::parse_interfaces(constantPoolHandle cp,
|
|
|
435 int length,
|
|
|
436 Handle class_loader,
|
|
|
437 Handle protection_domain,
|
|
|
438 PerfTraceTime* vmtimer,
|
|
|
439 symbolHandle class_name,
|
|
|
440 TRAPS) {
|
|
|
441 ClassFileStream* cfs = stream();
|
|
|
442 assert(length > 0, "only called for length>0");
|
|
|
443 objArrayHandle nullHandle;
|
|
|
444 objArrayOop interface_oop = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
|
445 objArrayHandle interfaces (THREAD, interface_oop);
|
|
|
446
|
|
|
447 int index;
|
|
|
448 for (index = 0; index < length; index++) {
|
|
|
449 u2 interface_index = cfs->get_u2(CHECK_(nullHandle));
|
|
|
450 check_property(
|
|
|
451 valid_cp_range(interface_index, cp->length()) &&
|
|
|
452 cp->tag_at(interface_index).is_unresolved_klass(),
|
|
|
453 "Interface name has bad constant pool index %u in class file %s",
|
|
|
454 interface_index, CHECK_(nullHandle));
|
|
|
455 symbolHandle unresolved_klass (THREAD, cp->klass_name_at(interface_index));
|
|
|
456
|
|
|
457 // Don't need to check legal name because it's checked when parsing constant pool.
|
|
|
458 // But need to make sure it's not an array type.
|
|
|
459 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY,
|
|
|
460 "Bad interface name in class file %s", CHECK_(nullHandle));
|
|
|
461
|
|
|
462 vmtimer->suspend(); // do not count recursive loading twice
|
|
|
463 // Call resolve_super so classcircularity is checked
|
|
|
464 klassOop k = SystemDictionary::resolve_super_or_fail(class_name,
|
|
|
465 unresolved_klass, class_loader, protection_domain,
|
|
|
466 false, CHECK_(nullHandle));
|
|
|
467 KlassHandle interf (THREAD, k);
|
|
|
468 vmtimer->resume();
|
|
|
469
|
|
|
470 if (!Klass::cast(interf())->is_interface()) {
|
|
|
471 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", nullHandle);
|
|
|
472 }
|
|
|
473 interfaces->obj_at_put(index, interf());
|
|
|
474 }
|
|
|
475
|
|
|
476 if (!_need_verify || length <= 1) {
|
|
|
477 return interfaces;
|
|
|
478 }
|
|
|
479
|
|
|
480 // Check if there's any duplicates in interfaces
|
|
|
481 ResourceMark rm(THREAD);
|
|
|
482 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
483 THREAD, NameSigHash*, HASH_ROW_SIZE);
|
|
|
484 initialize_hashtable(interface_names);
|
|
|
485 bool dup = false;
|
|
|
486 {
|
|
|
487 debug_only(No_Safepoint_Verifier nsv;)
|
|
|
488 for (index = 0; index < length; index++) {
|
|
|
489 klassOop k = (klassOop)interfaces->obj_at(index);
|
|
|
490 symbolOop name = instanceKlass::cast(k)->name();
|
|
|
491 // If no duplicates, add (name, NULL) in hashtable interface_names.
|
|
|
492 if (!put_after_lookup(name, NULL, interface_names)) {
|
|
|
493 dup = true;
|
|
|
494 break;
|
|
|
495 }
|
|
|
496 }
|
|
|
497 }
|
|
|
498 if (dup) {
|
|
|
499 classfile_parse_error("Duplicate interface name in class file %s",
|
|
|
500 CHECK_(nullHandle));
|
|
|
501 }
|
|
|
502
|
|
|
503 return interfaces;
|
|
|
504 }
|
|
|
505
|
|
|
506
|
|
|
507 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) {
|
|
|
508 // Make sure the constant pool entry is of a type appropriate to this field
|
|
|
509 guarantee_property(
|
|
|
510 (constantvalue_index > 0 &&
|
|
|
511 constantvalue_index < cp->length()),
|
|
|
512 "Bad initial value index %u in ConstantValue attribute in class file %s",
|
|
|
513 constantvalue_index, CHECK);
|
|
|
514 constantTag value_type = cp->tag_at(constantvalue_index);
|
|
|
515 switch ( cp->basic_type_for_signature_at(signature_index) ) {
|
|
|
516 case T_LONG:
|
|
|
517 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK);
|
|
|
518 break;
|
|
|
519 case T_FLOAT:
|
|
|
520 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK);
|
|
|
521 break;
|
|
|
522 case T_DOUBLE:
|
|
|
523 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK);
|
|
|
524 break;
|
|
|
525 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT:
|
|
|
526 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK);
|
|
|
527 break;
|
|
|
528 case T_OBJECT:
|
|
|
529 guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;", 18)
|
|
|
530 && (value_type.is_string() || value_type.is_unresolved_string())),
|
|
|
531 "Bad string initial value in class file %s", CHECK);
|
|
|
532 break;
|
|
|
533 default:
|
|
|
534 classfile_parse_error(
|
|
|
535 "Unable to set initial value %u in class file %s",
|
|
|
536 constantvalue_index, CHECK);
|
|
|
537 }
|
|
|
538 }
|
|
|
539
|
|
|
540
|
|
|
541 // Parse attributes for a field.
|
|
|
542 void ClassFileParser::parse_field_attributes(constantPoolHandle cp,
|
|
|
543 u2 attributes_count,
|
|
|
544 bool is_static, u2 signature_index,
|
|
|
545 u2* constantvalue_index_addr,
|
|
|
546 bool* is_synthetic_addr,
|
|
|
547 u2* generic_signature_index_addr,
|
|
|
548 typeArrayHandle* field_annotations,
|
|
|
549 TRAPS) {
|
|
|
550 ClassFileStream* cfs = stream();
|
|
|
551 assert(attributes_count > 0, "length should be greater than 0");
|
|
|
552 u2 constantvalue_index = 0;
|
|
|
553 u2 generic_signature_index = 0;
|
|
|
554 bool is_synthetic = false;
|
|
|
555 u1* runtime_visible_annotations = NULL;
|
|
|
556 int runtime_visible_annotations_length = 0;
|
|
|
557 u1* runtime_invisible_annotations = NULL;
|
|
|
558 int runtime_invisible_annotations_length = 0;
|
|
|
559 while (attributes_count--) {
|
|
|
560 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length
|
|
|
561 u2 attribute_name_index = cfs->get_u2_fast();
|
|
|
562 u4 attribute_length = cfs->get_u4_fast();
|
|
|
563 check_property(valid_cp_range(attribute_name_index, cp->length()) &&
|
|
|
564 cp->tag_at(attribute_name_index).is_utf8(),
|
|
|
565 "Invalid field attribute index %u in class file %s",
|
|
|
566 attribute_name_index,
|
|
|
567 CHECK);
|
|
|
568 symbolOop attribute_name = cp->symbol_at(attribute_name_index);
|
|
|
569 if (is_static && attribute_name == vmSymbols::tag_constant_value()) {
|
|
|
570 // ignore if non-static
|
|
|
571 if (constantvalue_index != 0) {
|
|
|
572 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK);
|
|
|
573 }
|
|
|
574 check_property(
|
|
|
575 attribute_length == 2,
|
|
|
576 "Invalid ConstantValue field attribute length %u in class file %s",
|
|
|
577 attribute_length, CHECK);
|
|
|
578 constantvalue_index = cfs->get_u2(CHECK);
|
|
|
579 if (_need_verify) {
|
|
|
580 verify_constantvalue(constantvalue_index, signature_index, cp, CHECK);
|
|
|
581 }
|
|
|
582 } else if (attribute_name == vmSymbols::tag_synthetic()) {
|
|
|
583 if (attribute_length != 0) {
|
|
|
584 classfile_parse_error(
|
|
|
585 "Invalid Synthetic field attribute length %u in class file %s",
|
|
|
586 attribute_length, CHECK);
|
|
|
587 }
|
|
|
588 is_synthetic = true;
|
|
|
589 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120
|
|
|
590 if (attribute_length != 0) {
|
|
|
591 classfile_parse_error(
|
|
|
592 "Invalid Deprecated field attribute length %u in class file %s",
|
|
|
593 attribute_length, CHECK);
|
|
|
594 }
|
|
|
595 } else if (_major_version >= JAVA_1_5_VERSION) {
|
|
|
596 if (attribute_name == vmSymbols::tag_signature()) {
|
|
|
597 if (attribute_length != 2) {
|
|
|
598 classfile_parse_error(
|
|
|
599 "Wrong size %u for field's Signature attribute in class file %s",
|
|
|
600 attribute_length, CHECK);
|
|
|
601 }
|
|
|
602 generic_signature_index = cfs->get_u2(CHECK);
|
|
|
603 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) {
|
|
|
604 runtime_visible_annotations_length = attribute_length;
|
|
|
605 runtime_visible_annotations = cfs->get_u1_buffer();
|
|
|
606 assert(runtime_visible_annotations != NULL, "null visible annotations");
|
|
|
607 cfs->skip_u1(runtime_visible_annotations_length, CHECK);
|
|
|
608 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) {
|
|
|
609 runtime_invisible_annotations_length = attribute_length;
|
|
|
610 runtime_invisible_annotations = cfs->get_u1_buffer();
|
|
|
611 assert(runtime_invisible_annotations != NULL, "null invisible annotations");
|
|
|
612 cfs->skip_u1(runtime_invisible_annotations_length, CHECK);
|
|
|
613 } else {
|
|
|
614 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes
|
|
|
615 }
|
|
|
616 } else {
|
|
|
617 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes
|
|
|
618 }
|
|
|
619 }
|
|
|
620
|
|
|
621 *constantvalue_index_addr = constantvalue_index;
|
|
|
622 *is_synthetic_addr = is_synthetic;
|
|
|
623 *generic_signature_index_addr = generic_signature_index;
|
|
|
624 *field_annotations = assemble_annotations(runtime_visible_annotations,
|
|
|
625 runtime_visible_annotations_length,
|
|
|
626 runtime_invisible_annotations,
|
|
|
627 runtime_invisible_annotations_length,
|
|
|
628 CHECK);
|
|
|
629 return;
|
|
|
630 }
|
|
|
631
|
|
|
632
|
|
|
633 // Field allocation types. Used for computing field offsets.
|
|
|
634
|
|
|
635 enum FieldAllocationType {
|
|
|
636 STATIC_OOP, // Oops
|
|
|
637 STATIC_BYTE, // Boolean, Byte, char
|
|
|
638 STATIC_SHORT, // shorts
|
|
|
639 STATIC_WORD, // ints
|
|
|
640 STATIC_DOUBLE, // long or double
|
|
|
641 STATIC_ALIGNED_DOUBLE,// aligned long or double
|
|
|
642 NONSTATIC_OOP,
|
|
|
643 NONSTATIC_BYTE,
|
|
|
644 NONSTATIC_SHORT,
|
|
|
645 NONSTATIC_WORD,
|
|
|
646 NONSTATIC_DOUBLE,
|
|
|
647 NONSTATIC_ALIGNED_DOUBLE
|
|
|
648 };
|
|
|
649
|
|
|
650
|
|
|
651 struct FieldAllocationCount {
|
|
|
652 int static_oop_count;
|
|
|
653 int static_byte_count;
|
|
|
654 int static_short_count;
|
|
|
655 int static_word_count;
|
|
|
656 int static_double_count;
|
|
|
657 int nonstatic_oop_count;
|
|
|
658 int nonstatic_byte_count;
|
|
|
659 int nonstatic_short_count;
|
|
|
660 int nonstatic_word_count;
|
|
|
661 int nonstatic_double_count;
|
|
|
662 };
|
|
|
663
|
|
|
664 typeArrayHandle ClassFileParser::parse_fields(constantPoolHandle cp, bool is_interface,
|
|
|
665 struct FieldAllocationCount *fac,
|
|
|
666 objArrayHandle* fields_annotations, TRAPS) {
|
|
|
667 ClassFileStream* cfs = stream();
|
|
|
668 typeArrayHandle nullHandle;
|
|
|
669 cfs->guarantee_more(2, CHECK_(nullHandle)); // length
|
|
|
670 u2 length = cfs->get_u2_fast();
|
|
|
671 // Tuples of shorts [access, name index, sig index, initial value index, byte offset, generic signature index]
|
|
|
672 typeArrayOop new_fields = oopFactory::new_permanent_shortArray(length*instanceKlass::next_offset, CHECK_(nullHandle));
|
|
|
673 typeArrayHandle fields(THREAD, new_fields);
|
|
|
674
|
|
|
675 int index = 0;
|
|
|
676 typeArrayHandle field_annotations;
|
|
|
677 for (int n = 0; n < length; n++) {
|
|
|
678 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count
|
|
|
679
|
|
|
680 AccessFlags access_flags;
|
|
|
681 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS;
|
|
|
682 verify_legal_field_modifiers(flags, is_interface, CHECK_(nullHandle));
|
|
|
683 access_flags.set_flags(flags);
|
|
|
684
|
|
|
685 u2 name_index = cfs->get_u2_fast();
|
|
|
686 int cp_size = cp->length();
|
|
|
687 check_property(
|
|
|
688 valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(),
|
|
|
689 "Invalid constant pool index %u for field name in class file %s",
|
|
|
690 name_index, CHECK_(nullHandle));
|
|
|
691 symbolHandle name(THREAD, cp->symbol_at(name_index));
|
|
|
692 verify_legal_field_name(name, CHECK_(nullHandle));
|
|
|
693
|
|
|
694 u2 signature_index = cfs->get_u2_fast();
|
|
|
695 check_property(
|
|
|
696 valid_cp_range(signature_index, cp_size) &&
|
|
|
697 cp->tag_at(signature_index).is_utf8(),
|
|
|
698 "Invalid constant pool index %u for field signature in class file %s",
|
|
|
699 signature_index, CHECK_(nullHandle));
|
|
|
700 symbolHandle sig(THREAD, cp->symbol_at(signature_index));
|
|
|
701 verify_legal_field_signature(name, sig, CHECK_(nullHandle));
|
|
|
702
|
|
|
703 u2 constantvalue_index = 0;
|
|
|
704 bool is_synthetic = false;
|
|
|
705 u2 generic_signature_index = 0;
|
|
|
706 bool is_static = access_flags.is_static();
|
|
|
707
|
|
|
708 u2 attributes_count = cfs->get_u2_fast();
|
|
|
709 if (attributes_count > 0) {
|
|
|
710 parse_field_attributes(cp, attributes_count, is_static, signature_index,
|
|
|
711 &constantvalue_index, &is_synthetic,
|
|
|
712 &generic_signature_index, &field_annotations,
|
|
|
713 CHECK_(nullHandle));
|
|
|
714 if (field_annotations.not_null()) {
|
|
|
715 if (fields_annotations->is_null()) {
|
|
|
716 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
|
717 *fields_annotations = objArrayHandle(THREAD, md);
|
|
|
718 }
|
|
|
719 (*fields_annotations)->obj_at_put(n, field_annotations());
|
|
|
720 }
|
|
|
721 if (is_synthetic) {
|
|
|
722 access_flags.set_is_synthetic();
|
|
|
723 }
|
|
|
724 }
|
|
|
725
|
|
|
726 fields->short_at_put(index++, access_flags.as_short());
|
|
|
727 fields->short_at_put(index++, name_index);
|
|
|
728 fields->short_at_put(index++, signature_index);
|
|
|
729 fields->short_at_put(index++, constantvalue_index);
|
|
|
730
|
|
|
731 // Remember how many oops we encountered and compute allocation type
|
|
|
732 BasicType type = cp->basic_type_for_signature_at(signature_index);
|
|
|
733 FieldAllocationType atype;
|
|
|
734 if ( is_static ) {
|
|
|
735 switch ( type ) {
|
|
|
736 case T_BOOLEAN:
|
|
|
737 case T_BYTE:
|
|
|
738 fac->static_byte_count++;
|
|
|
739 atype = STATIC_BYTE;
|
|
|
740 break;
|
|
|
741 case T_LONG:
|
|
|
742 case T_DOUBLE:
|
|
|
743 if (Universe::field_type_should_be_aligned(type)) {
|
|
|
744 atype = STATIC_ALIGNED_DOUBLE;
|
|
|
745 } else {
|
|
|
746 atype = STATIC_DOUBLE;
|
|
|
747 }
|
|
|
748 fac->static_double_count++;
|
|
|
749 break;
|
|
|
750 case T_CHAR:
|
|
|
751 case T_SHORT:
|
|
|
752 fac->static_short_count++;
|
|
|
753 atype = STATIC_SHORT;
|
|
|
754 break;
|
|
|
755 case T_FLOAT:
|
|
|
756 case T_INT:
|
|
|
757 fac->static_word_count++;
|
|
|
758 atype = STATIC_WORD;
|
|
|
759 break;
|
|
|
760 case T_ARRAY:
|
|
|
761 case T_OBJECT:
|
|
|
762 fac->static_oop_count++;
|
|
|
763 atype = STATIC_OOP;
|
|
|
764 break;
|
|
|
765 case T_ADDRESS:
|
|
|
766 case T_VOID:
|
|
|
767 default:
|
|
|
768 assert(0, "bad field type");
|
|
|
769 }
|
|
|
770 } else {
|
|
|
771 switch ( type ) {
|
|
|
772 case T_BOOLEAN:
|
|
|
773 case T_BYTE:
|
|
|
774 fac->nonstatic_byte_count++;
|
|
|
775 atype = NONSTATIC_BYTE;
|
|
|
776 break;
|
|
|
777 case T_LONG:
|
|
|
778 case T_DOUBLE:
|
|
|
779 if (Universe::field_type_should_be_aligned(type)) {
|
|
|
780 atype = NONSTATIC_ALIGNED_DOUBLE;
|
|
|
781 } else {
|
|
|
782 atype = NONSTATIC_DOUBLE;
|
|
|
783 }
|
|
|
784 fac->nonstatic_double_count++;
|
|
|
785 break;
|
|
|
786 case T_CHAR:
|
|
|
787 case T_SHORT:
|
|
|
788 fac->nonstatic_short_count++;
|
|
|
789 atype = NONSTATIC_SHORT;
|
|
|
790 break;
|
|
|
791 case T_FLOAT:
|
|
|
792 case T_INT:
|
|
|
793 fac->nonstatic_word_count++;
|
|
|
794 atype = NONSTATIC_WORD;
|
|
|
795 break;
|
|
|
796 case T_ARRAY:
|
|
|
797 case T_OBJECT:
|
|
|
798 fac->nonstatic_oop_count++;
|
|
|
799 atype = NONSTATIC_OOP;
|
|
|
800 break;
|
|
|
801 case T_ADDRESS:
|
|
|
802 case T_VOID:
|
|
|
803 default:
|
|
|
804 assert(0, "bad field type");
|
|
|
805 }
|
|
|
806 }
|
|
|
807
|
|
|
808 // The correct offset is computed later (all oop fields will be located together)
|
|
|
809 // We temporarily store the allocation type in the offset field
|
|
|
810 fields->short_at_put(index++, atype);
|
|
|
811 fields->short_at_put(index++, 0); // Clear out high word of byte offset
|
|
|
812 fields->short_at_put(index++, generic_signature_index);
|
|
|
813 }
|
|
|
814
|
|
|
815 if (_need_verify && length > 1) {
|
|
|
816 // Check duplicated fields
|
|
|
817 ResourceMark rm(THREAD);
|
|
|
818 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
819 THREAD, NameSigHash*, HASH_ROW_SIZE);
|
|
|
820 initialize_hashtable(names_and_sigs);
|
|
|
821 bool dup = false;
|
|
|
822 {
|
|
|
823 debug_only(No_Safepoint_Verifier nsv;)
|
|
|
824 for (int i = 0; i < length*instanceKlass::next_offset; i += instanceKlass::next_offset) {
|
|
|
825 int name_index = fields->ushort_at(i + instanceKlass::name_index_offset);
|
|
|
826 symbolOop name = cp->symbol_at(name_index);
|
|
|
827 int sig_index = fields->ushort_at(i + instanceKlass::signature_index_offset);
|
|
|
828 symbolOop sig = cp->symbol_at(sig_index);
|
|
|
829 // If no duplicates, add name/signature in hashtable names_and_sigs.
|
|
|
830 if (!put_after_lookup(name, sig, names_and_sigs)) {
|
|
|
831 dup = true;
|
|
|
832 break;
|
|
|
833 }
|
|
|
834 }
|
|
|
835 }
|
|
|
836 if (dup) {
|
|
|
837 classfile_parse_error("Duplicate field name&signature in class file %s",
|
|
|
838 CHECK_(nullHandle));
|
|
|
839 }
|
|
|
840 }
|
|
|
841
|
|
|
842 return fields;
|
|
|
843 }
|
|
|
844
|
|
|
845
|
|
|
846 static void copy_u2_with_conversion(u2* dest, u2* src, int length) {
|
|
|
847 while (length-- > 0) {
|
|
|
848 *dest++ = Bytes::get_Java_u2((u1*) (src++));
|
|
|
849 }
|
|
|
850 }
|
|
|
851
|
|
|
852
|
|
|
853 typeArrayHandle ClassFileParser::parse_exception_table(u4 code_length,
|
|
|
854 u4 exception_table_length,
|
|
|
855 constantPoolHandle cp,
|
|
|
856 TRAPS) {
|
|
|
857 ClassFileStream* cfs = stream();
|
|
|
858 typeArrayHandle nullHandle;
|
|
|
859
|
|
|
860 // 4-tuples of ints [start_pc, end_pc, handler_pc, catch_type index]
|
|
|
861 typeArrayOop eh = oopFactory::new_permanent_intArray(exception_table_length*4, CHECK_(nullHandle));
|
|
|
862 typeArrayHandle exception_handlers = typeArrayHandle(THREAD, eh);
|
|
|
863
|
|
|
864 int index = 0;
|
|
|
865 cfs->guarantee_more(8 * exception_table_length, CHECK_(nullHandle)); // start_pc, end_pc, handler_pc, catch_type_index
|
|
|
866 for (unsigned int i = 0; i < exception_table_length; i++) {
|
|
|
867 u2 start_pc = cfs->get_u2_fast();
|
|
|
868 u2 end_pc = cfs->get_u2_fast();
|
|
|
869 u2 handler_pc = cfs->get_u2_fast();
|
|
|
870 u2 catch_type_index = cfs->get_u2_fast();
|
|
|
871 // Will check legal target after parsing code array in verifier.
|
|
|
872 if (_need_verify) {
|
|
|
873 guarantee_property((start_pc < end_pc) && (end_pc <= code_length),
|
|
|
874 "Illegal exception table range in class file %s", CHECK_(nullHandle));
|
|
|
875 guarantee_property(handler_pc < code_length,
|
|
|
876 "Illegal exception table handler in class file %s", CHECK_(nullHandle));
|
|
|
877 if (catch_type_index != 0) {
|
|
|
878 guarantee_property(valid_cp_range(catch_type_index, cp->length()) &&
|
|
|
879 (cp->tag_at(catch_type_index).is_klass() ||
|
|
|
880 cp->tag_at(catch_type_index).is_unresolved_klass()),
|
|
|
881 "Catch type in exception table has bad constant type in class file %s", CHECK_(nullHandle));
|
|
|
882 }
|
|
|
883 }
|
|
|
884 exception_handlers->int_at_put(index++, start_pc);
|
|
|
885 exception_handlers->int_at_put(index++, end_pc);
|
|
|
886 exception_handlers->int_at_put(index++, handler_pc);
|
|
|
887 exception_handlers->int_at_put(index++, catch_type_index);
|
|
|
888 }
|
|
|
889 return exception_handlers;
|
|
|
890 }
|
|
|
891
|
|
|
892 void ClassFileParser::parse_linenumber_table(
|
|
|
893 u4 code_attribute_length, u4 code_length,
|
|
|
894 CompressedLineNumberWriteStream** write_stream, TRAPS) {
|
|
|
895 ClassFileStream* cfs = stream();
|
|
|
896 unsigned int num_entries = cfs->get_u2(CHECK);
|
|
|
897
|
|
|
898 // Each entry is a u2 start_pc, and a u2 line_number
|
|
|
899 unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2));
|
|
|
900
|
|
|
901 // Verify line number attribute and table length
|
|
|
902 check_property(
|
|
|
903 code_attribute_length == sizeof(u2) + length_in_bytes,
|
|
|
904 "LineNumberTable attribute has wrong length in class file %s", CHECK);
|
|
|
905
|
|
|
906 cfs->guarantee_more(length_in_bytes, CHECK);
|
|
|
907
|
|
|
908 if ((*write_stream) == NULL) {
|
|
|
909 if (length_in_bytes > fixed_buffer_size) {
|
|
|
910 (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes);
|
|
|
911 } else {
|
|
|
912 (*write_stream) = new CompressedLineNumberWriteStream(
|
|
|
913 linenumbertable_buffer, fixed_buffer_size);
|
|
|
914 }
|
|
|
915 }
|
|
|
916
|
|
|
917 while (num_entries-- > 0) {
|
|
|
918 u2 bci = cfs->get_u2_fast(); // start_pc
|
|
|
919 u2 line = cfs->get_u2_fast(); // line_number
|
|
|
920 guarantee_property(bci < code_length,
|
|
|
921 "Invalid pc in LineNumberTable in class file %s", CHECK);
|
|
|
922 (*write_stream)->write_pair(bci, line);
|
|
|
923 }
|
|
|
924 }
|
|
|
925
|
|
|
926
|
|
|
927 // Class file LocalVariableTable elements.
|
|
|
928 class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC {
|
|
|
929 public:
|
|
|
930 u2 start_bci;
|
|
|
931 u2 length;
|
|
|
932 u2 name_cp_index;
|
|
|
933 u2 descriptor_cp_index;
|
|
|
934 u2 slot;
|
|
|
935 };
|
|
|
936
|
|
|
937
|
|
|
938 class LVT_Hash: public CHeapObj {
|
|
|
939 public:
|
|
|
940 LocalVariableTableElement *_elem; // element
|
|
|
941 LVT_Hash* _next; // Next entry in hash table
|
|
|
942 };
|
|
|
943
|
|
|
944 unsigned int hash(LocalVariableTableElement *elem) {
|
|
|
945 unsigned int raw_hash = elem->start_bci;
|
|
|
946
|
|
|
947 raw_hash = elem->length + raw_hash * 37;
|
|
|
948 raw_hash = elem->name_cp_index + raw_hash * 37;
|
|
|
949 raw_hash = elem->slot + raw_hash * 37;
|
|
|
950
|
|
|
951 return raw_hash % HASH_ROW_SIZE;
|
|
|
952 }
|
|
|
953
|
|
|
954 void initialize_hashtable(LVT_Hash** table) {
|
|
|
955 for (int i = 0; i < HASH_ROW_SIZE; i++) {
|
|
|
956 table[i] = NULL;
|
|
|
957 }
|
|
|
958 }
|
|
|
959
|
|
|
960 void clear_hashtable(LVT_Hash** table) {
|
|
|
961 for (int i = 0; i < HASH_ROW_SIZE; i++) {
|
|
|
962 LVT_Hash* current = table[i];
|
|
|
963 LVT_Hash* next;
|
|
|
964 while (current != NULL) {
|
|
|
965 next = current->_next;
|
|
|
966 current->_next = NULL;
|
|
|
967 delete(current);
|
|
|
968 current = next;
|
|
|
969 }
|
|
|
970 table[i] = NULL;
|
|
|
971 }
|
|
|
972 }
|
|
|
973
|
|
|
974 LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) {
|
|
|
975 LVT_Hash* entry = table[index];
|
|
|
976
|
|
|
977 /*
|
|
|
978 * 3-tuple start_bci/length/slot has to be unique key,
|
|
|
979 * so the following comparison seems to be redundant:
|
|
|
980 * && elem->name_cp_index == entry->_elem->name_cp_index
|
|
|
981 */
|
|
|
982 while (entry != NULL) {
|
|
|
983 if (elem->start_bci == entry->_elem->start_bci
|
|
|
984 && elem->length == entry->_elem->length
|
|
|
985 && elem->name_cp_index == entry->_elem->name_cp_index
|
|
|
986 && elem->slot == entry->_elem->slot
|
|
|
987 ) {
|
|
|
988 return entry;
|
|
|
989 }
|
|
|
990 entry = entry->_next;
|
|
|
991 }
|
|
|
992 return NULL;
|
|
|
993 }
|
|
|
994
|
|
|
995 // Return false if the local variable is found in table.
|
|
|
996 // Return true if no duplicate is found.
|
|
|
997 // And local variable is added as a new entry in table.
|
|
|
998 bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) {
|
|
|
999 // First lookup for duplicates
|
|
|
1000 int index = hash(elem);
|
|
|
1001 LVT_Hash* entry = LVT_lookup(elem, index, table);
|
|
|
1002
|
|
|
1003 if (entry != NULL) {
|
|
|
1004 return false;
|
|
|
1005 }
|
|
|
1006 // No duplicate is found, allocate a new entry and fill it.
|
|
|
1007 if ((entry = new LVT_Hash()) == NULL) {
|
|
|
1008 return false;
|
|
|
1009 }
|
|
|
1010 entry->_elem = elem;
|
|
|
1011
|
|
|
1012 // Insert into hash table
|
|
|
1013 entry->_next = table[index];
|
|
|
1014 table[index] = entry;
|
|
|
1015
|
|
|
1016 return true;
|
|
|
1017 }
|
|
|
1018
|
|
|
1019 void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) {
|
|
|
1020 lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci);
|
|
|
1021 lvt->length = Bytes::get_Java_u2((u1*) &src->length);
|
|
|
1022 lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index);
|
|
|
1023 lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index);
|
|
|
1024 lvt->signature_cp_index = 0;
|
|
|
1025 lvt->slot = Bytes::get_Java_u2((u1*) &src->slot);
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 // Function is used to parse both attributes:
|
|
|
1029 // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT)
|
|
|
1030 u2* ClassFileParser::parse_localvariable_table(u4 code_length,
|
|
|
1031 u2 max_locals,
|
|
|
1032 u4 code_attribute_length,
|
|
|
1033 constantPoolHandle cp,
|
|
|
1034 u2* localvariable_table_length,
|
|
|
1035 bool isLVTT,
|
|
|
1036 TRAPS) {
|
|
|
1037 ClassFileStream* cfs = stream();
|
|
|
1038 const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable";
|
|
|
1039 *localvariable_table_length = cfs->get_u2(CHECK_NULL);
|
|
|
1040 unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2);
|
|
|
1041 // Verify local variable table attribute has right length
|
|
|
1042 if (_need_verify) {
|
|
|
1043 guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)),
|
|
|
1044 "%s has wrong length in class file %s", tbl_name, CHECK_NULL);
|
|
|
1045 }
|
|
|
1046 u2* localvariable_table_start = cfs->get_u2_buffer();
|
|
|
1047 assert(localvariable_table_start != NULL, "null local variable table");
|
|
|
1048 if (!_need_verify) {
|
|
|
1049 cfs->skip_u2_fast(size);
|
|
|
1050 } else {
|
|
|
1051 cfs->guarantee_more(size * 2, CHECK_NULL);
|
|
|
1052 for(int i = 0; i < (*localvariable_table_length); i++) {
|
|
|
1053 u2 start_pc = cfs->get_u2_fast();
|
|
|
1054 u2 length = cfs->get_u2_fast();
|
|
|
1055 u2 name_index = cfs->get_u2_fast();
|
|
|
1056 u2 descriptor_index = cfs->get_u2_fast();
|
|
|
1057 u2 index = cfs->get_u2_fast();
|
|
|
1058 // Assign to a u4 to avoid overflow
|
|
|
1059 u4 end_pc = (u4)start_pc + (u4)length;
|
|
|
1060
|
|
|
1061 if (start_pc >= code_length) {
|
|
|
1062 classfile_parse_error(
|
|
|
1063 "Invalid start_pc %u in %s in class file %s",
|
|
|
1064 start_pc, tbl_name, CHECK_NULL);
|
|
|
1065 }
|
|
|
1066 if (end_pc > code_length) {
|
|
|
1067 classfile_parse_error(
|
|
|
1068 "Invalid length %u in %s in class file %s",
|
|
|
1069 length, tbl_name, CHECK_NULL);
|
|
|
1070 }
|
|
|
1071 int cp_size = cp->length();
|
|
|
1072 guarantee_property(
|
|
|
1073 valid_cp_range(name_index, cp_size) &&
|
|
|
1074 cp->tag_at(name_index).is_utf8(),
|
|
|
1075 "Name index %u in %s has bad constant type in class file %s",
|
|
|
1076 name_index, tbl_name, CHECK_NULL);
|
|
|
1077 guarantee_property(
|
|
|
1078 valid_cp_range(descriptor_index, cp_size) &&
|
|
|
1079 cp->tag_at(descriptor_index).is_utf8(),
|
|
|
1080 "Signature index %u in %s has bad constant type in class file %s",
|
|
|
1081 descriptor_index, tbl_name, CHECK_NULL);
|
|
|
1082
|
|
|
1083 symbolHandle name(THREAD, cp->symbol_at(name_index));
|
|
|
1084 symbolHandle sig(THREAD, cp->symbol_at(descriptor_index));
|
|
|
1085 verify_legal_field_name(name, CHECK_NULL);
|
|
|
1086 u2 extra_slot = 0;
|
|
|
1087 if (!isLVTT) {
|
|
|
1088 verify_legal_field_signature(name, sig, CHECK_NULL);
|
|
|
1089
|
|
|
1090 // 4894874: check special cases for double and long local variables
|
|
|
1091 if (sig() == vmSymbols::type_signature(T_DOUBLE) ||
|
|
|
1092 sig() == vmSymbols::type_signature(T_LONG)) {
|
|
|
1093 extra_slot = 1;
|
|
|
1094 }
|
|
|
1095 }
|
|
|
1096 guarantee_property((index + extra_slot) < max_locals,
|
|
|
1097 "Invalid index %u in %s in class file %s",
|
|
|
1098 index, tbl_name, CHECK_NULL);
|
|
|
1099 }
|
|
|
1100 }
|
|
|
1101 return localvariable_table_start;
|
|
|
1102 }
|
|
|
1103
|
|
|
1104
|
|
|
1105 void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
|
|
|
1106 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) {
|
|
|
1107 ClassFileStream* cfs = stream();
|
|
|
1108 u2 index = 0; // index in the array with long/double occupying two slots
|
|
|
1109 u4 i1 = *u1_index;
|
|
|
1110 u4 i2 = *u2_index + 1;
|
|
|
1111 for(int i = 0; i < array_length; i++) {
|
|
|
1112 u1 tag = u1_array[i1++] = cfs->get_u1(CHECK);
|
|
|
1113 index++;
|
|
|
1114 if (tag == ITEM_Long || tag == ITEM_Double) {
|
|
|
1115 index++;
|
|
|
1116 } else if (tag == ITEM_Object) {
|
|
|
1117 u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK);
|
|
|
1118 guarantee_property(valid_cp_range(class_index, cp->length()) &&
|
|
|
1119 cp->tag_at(class_index).is_unresolved_klass(),
|
|
|
1120 "Bad class index %u in StackMap in class file %s",
|
|
|
1121 class_index, CHECK);
|
|
|
1122 } else if (tag == ITEM_Uninitialized) {
|
|
|
1123 u2 offset = u2_array[i2++] = cfs->get_u2(CHECK);
|
|
|
1124 guarantee_property(
|
|
|
1125 offset < code_length,
|
|
|
1126 "Bad uninitialized type offset %u in StackMap in class file %s",
|
|
|
1127 offset, CHECK);
|
|
|
1128 } else {
|
|
|
1129 guarantee_property(
|
|
|
1130 tag <= (u1)ITEM_Uninitialized,
|
|
|
1131 "Unknown variable type %u in StackMap in class file %s",
|
|
|
1132 tag, CHECK);
|
|
|
1133 }
|
|
|
1134 }
|
|
|
1135 u2_array[*u2_index] = index;
|
|
|
1136 *u1_index = i1;
|
|
|
1137 *u2_index = i2;
|
|
|
1138 }
|
|
|
1139
|
|
|
1140 typeArrayOop ClassFileParser::parse_stackmap_table(
|
|
|
1141 u4 code_attribute_length, TRAPS) {
|
|
|
1142 if (code_attribute_length == 0)
|
|
|
1143 return NULL;
|
|
|
1144
|
|
|
1145 ClassFileStream* cfs = stream();
|
|
|
1146 u1* stackmap_table_start = cfs->get_u1_buffer();
|
|
|
1147 assert(stackmap_table_start != NULL, "null stackmap table");
|
|
|
1148
|
|
|
1149 // check code_attribute_length first
|
|
|
1150 stream()->skip_u1(code_attribute_length, CHECK_NULL);
|
|
|
1151
|
|
|
1152 if (!_need_verify && !DumpSharedSpaces) {
|
|
|
1153 return NULL;
|
|
|
1154 }
|
|
|
1155
|
|
|
1156 typeArrayOop stackmap_data =
|
|
|
1157 oopFactory::new_permanent_byteArray(code_attribute_length, CHECK_NULL);
|
|
|
1158
|
|
|
1159 stackmap_data->set_length(code_attribute_length);
|
|
|
1160 memcpy((void*)stackmap_data->byte_at_addr(0),
|
|
|
1161 (void*)stackmap_table_start, code_attribute_length);
|
|
|
1162 return stackmap_data;
|
|
|
1163 }
|
|
|
1164
|
|
|
1165 u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length,
|
|
|
1166 u4 method_attribute_length,
|
|
|
1167 constantPoolHandle cp, TRAPS) {
|
|
|
1168 ClassFileStream* cfs = stream();
|
|
|
1169 cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length
|
|
|
1170 *checked_exceptions_length = cfs->get_u2_fast();
|
|
|
1171 unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2);
|
|
|
1172 u2* checked_exceptions_start = cfs->get_u2_buffer();
|
|
|
1173 assert(checked_exceptions_start != NULL, "null checked exceptions");
|
|
|
1174 if (!_need_verify) {
|
|
|
1175 cfs->skip_u2_fast(size);
|
|
|
1176 } else {
|
|
|
1177 // Verify each value in the checked exception table
|
|
|
1178 u2 checked_exception;
|
|
|
1179 u2 len = *checked_exceptions_length;
|
|
|
1180 cfs->guarantee_more(2 * len, CHECK_NULL);
|
|
|
1181 for (int i = 0; i < len; i++) {
|
|
|
1182 checked_exception = cfs->get_u2_fast();
|
|
|
1183 check_property(
|
|
|
1184 valid_cp_range(checked_exception, cp->length()) &&
|
|
|
1185 cp->tag_at(checked_exception).is_klass_reference(),
|
|
|
1186 "Exception name has bad type at constant pool %u in class file %s",
|
|
|
1187 checked_exception, CHECK_NULL);
|
|
|
1188 }
|
|
|
1189 }
|
|
|
1190 // check exceptions attribute length
|
|
|
1191 if (_need_verify) {
|
|
|
1192 guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) +
|
|
|
1193 sizeof(u2) * size),
|
|
|
1194 "Exceptions attribute has wrong length in class file %s", CHECK_NULL);
|
|
|
1195 }
|
|
|
1196 return checked_exceptions_start;
|
|
|
1197 }
|
|
|
1198
|
|
|
1199
|
|
|
1200 #define MAX_ARGS_SIZE 255
|
|
|
1201 #define MAX_CODE_SIZE 65535
|
|
|
1202 #define INITIAL_MAX_LVT_NUMBER 256
|
|
|
1203
|
|
|
1204 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions
|
|
|
1205 // attribute is inlined. This is curbersome to avoid since we inline most of the parts in the
|
|
|
1206 // methodOop to save footprint, so we only know the size of the resulting methodOop when the
|
|
|
1207 // entire method attribute is parsed.
|
|
|
1208 //
|
|
|
1209 // The promoted_flags parameter is used to pass relevant access_flags
|
|
|
1210 // from the method back up to the containing klass. These flag values
|
|
|
1211 // are added to klass's access_flags.
|
|
|
1212
|
|
|
1213 methodHandle ClassFileParser::parse_method(constantPoolHandle cp, bool is_interface,
|
|
|
1214 AccessFlags *promoted_flags,
|
|
|
1215 typeArrayHandle* method_annotations,
|
|
|
1216 typeArrayHandle* method_parameter_annotations,
|
|
|
1217 typeArrayHandle* method_default_annotations,
|
|
|
1218 TRAPS) {
|
|
|
1219 ClassFileStream* cfs = stream();
|
|
|
1220 methodHandle nullHandle;
|
|
|
1221 ResourceMark rm(THREAD);
|
|
|
1222 // Parse fixed parts
|
|
|
1223 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count
|
|
|
1224
|
|
|
1225 int flags = cfs->get_u2_fast();
|
|
|
1226 u2 name_index = cfs->get_u2_fast();
|
|
|
1227 int cp_size = cp->length();
|
|
|
1228 check_property(
|
|
|
1229 valid_cp_range(name_index, cp_size) &&
|
|
|
1230 cp->tag_at(name_index).is_utf8(),
|
|
|
1231 "Illegal constant pool index %u for method name in class file %s",
|
|
|
1232 name_index, CHECK_(nullHandle));
|
|
|
1233 symbolHandle name(THREAD, cp->symbol_at(name_index));
|
|
|
1234 verify_legal_method_name(name, CHECK_(nullHandle));
|
|
|
1235
|
|
|
1236 u2 signature_index = cfs->get_u2_fast();
|
|
|
1237 guarantee_property(
|
|
|
1238 valid_cp_range(signature_index, cp_size) &&
|
|
|
1239 cp->tag_at(signature_index).is_utf8(),
|
|
|
1240 "Illegal constant pool index %u for method signature in class file %s",
|
|
|
1241 signature_index, CHECK_(nullHandle));
|
|
|
1242 symbolHandle signature(THREAD, cp->symbol_at(signature_index));
|
|
|
1243
|
|
|
1244 AccessFlags access_flags;
|
|
|
1245 if (name == vmSymbols::class_initializer_name()) {
|
|
|
1246 // We ignore the access flags for a class initializer. (JVM Spec. p. 116)
|
|
|
1247 flags = JVM_ACC_STATIC;
|
|
|
1248 } else {
|
|
|
1249 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle));
|
|
|
1250 }
|
|
|
1251
|
|
|
1252 int args_size = -1; // only used when _need_verify is true
|
|
|
1253 if (_need_verify) {
|
|
|
1254 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) +
|
|
|
1255 verify_legal_method_signature(name, signature, CHECK_(nullHandle));
|
|
|
1256 if (args_size > MAX_ARGS_SIZE) {
|
|
|
1257 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle));
|
|
|
1258 }
|
|
|
1259 }
|
|
|
1260
|
|
|
1261 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS);
|
|
|
1262
|
|
|
1263 // Default values for code and exceptions attribute elements
|
|
|
1264 u2 max_stack = 0;
|
|
|
1265 u2 max_locals = 0;
|
|
|
1266 u4 code_length = 0;
|
|
|
1267 u1* code_start = 0;
|
|
|
1268 u2 exception_table_length = 0;
|
|
|
1269 typeArrayHandle exception_handlers(THREAD, Universe::the_empty_int_array());
|
|
|
1270 u2 checked_exceptions_length = 0;
|
|
|
1271 u2* checked_exceptions_start = NULL;
|
|
|
1272 CompressedLineNumberWriteStream* linenumber_table = NULL;
|
|
|
1273 int linenumber_table_length = 0;
|
|
|
1274 int total_lvt_length = 0;
|
|
|
1275 u2 lvt_cnt = 0;
|
|
|
1276 u2 lvtt_cnt = 0;
|
|
|
1277 bool lvt_allocated = false;
|
|
|
1278 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER;
|
|
|
1279 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER;
|
|
|
1280 u2* localvariable_table_length;
|
|
|
1281 u2** localvariable_table_start;
|
|
|
1282 u2* localvariable_type_table_length;
|
|
|
1283 u2** localvariable_type_table_start;
|
|
|
1284 bool parsed_code_attribute = false;
|
|
|
1285 bool parsed_checked_exceptions_attribute = false;
|
|
|
1286 bool parsed_stackmap_attribute = false;
|
|
|
1287 // stackmap attribute - JDK1.5
|
|
|
1288 typeArrayHandle stackmap_data;
|
|
|
1289 u2 generic_signature_index = 0;
|
|
|
1290 u1* runtime_visible_annotations = NULL;
|
|
|
1291 int runtime_visible_annotations_length = 0;
|
|
|
1292 u1* runtime_invisible_annotations = NULL;
|
|
|
1293 int runtime_invisible_annotations_length = 0;
|
|
|
1294 u1* runtime_visible_parameter_annotations = NULL;
|
|
|
1295 int runtime_visible_parameter_annotations_length = 0;
|
|
|
1296 u1* runtime_invisible_parameter_annotations = NULL;
|
|
|
1297 int runtime_invisible_parameter_annotations_length = 0;
|
|
|
1298 u1* annotation_default = NULL;
|
|
|
1299 int annotation_default_length = 0;
|
|
|
1300
|
|
|
1301 // Parse code and exceptions attribute
|
|
|
1302 u2 method_attributes_count = cfs->get_u2_fast();
|
|
|
1303 while (method_attributes_count--) {
|
|
|
1304 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length
|
|
|
1305 u2 method_attribute_name_index = cfs->get_u2_fast();
|
|
|
1306 u4 method_attribute_length = cfs->get_u4_fast();
|
|
|
1307 check_property(
|
|
|
1308 valid_cp_range(method_attribute_name_index, cp_size) &&
|
|
|
1309 cp->tag_at(method_attribute_name_index).is_utf8(),
|
|
|
1310 "Invalid method attribute name index %u in class file %s",
|
|
|
1311 method_attribute_name_index, CHECK_(nullHandle));
|
|
|
1312
|
|
|
1313 symbolOop method_attribute_name = cp->symbol_at(method_attribute_name_index);
|
|
|
1314 if (method_attribute_name == vmSymbols::tag_code()) {
|
|
|
1315 // Parse Code attribute
|
|
|
1316 if (_need_verify) {
|
|
|
1317 guarantee_property(!access_flags.is_native() && !access_flags.is_abstract(),
|
|
|
1318 "Code attribute in native or abstract methods in class file %s",
|
|
|
1319 CHECK_(nullHandle));
|
|
|
1320 }
|
|
|
1321 if (parsed_code_attribute) {
|
|
|
1322 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle));
|
|
|
1323 }
|
|
|
1324 parsed_code_attribute = true;
|
|
|
1325
|
|
|
1326 // Stack size, locals size, and code size
|
|
|
1327 if (_major_version == 45 && _minor_version <= 2) {
|
|
|
1328 cfs->guarantee_more(4, CHECK_(nullHandle));
|
|
|
1329 max_stack = cfs->get_u1_fast();
|
|
|
1330 max_locals = cfs->get_u1_fast();
|
|
|
1331 code_length = cfs->get_u2_fast();
|
|
|
1332 } else {
|
|
|
1333 cfs->guarantee_more(8, CHECK_(nullHandle));
|
|
|
1334 max_stack = cfs->get_u2_fast();
|
|
|
1335 max_locals = cfs->get_u2_fast();
|
|
|
1336 code_length = cfs->get_u4_fast();
|
|
|
1337 }
|
|
|
1338 if (_need_verify) {
|
|
|
1339 guarantee_property(args_size <= max_locals,
|
|
|
1340 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle));
|
|
|
1341 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE,
|
|
|
1342 "Invalid method Code length %u in class file %s",
|
|
|
1343 code_length, CHECK_(nullHandle));
|
|
|
1344 }
|
|
|
1345 // Code pointer
|
|
|
1346 code_start = cfs->get_u1_buffer();
|
|
|
1347 assert(code_start != NULL, "null code start");
|
|
|
1348 cfs->guarantee_more(code_length, CHECK_(nullHandle));
|
|
|
1349 cfs->skip_u1_fast(code_length);
|
|
|
1350
|
|
|
1351 // Exception handler table
|
|
|
1352 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length
|
|
|
1353 exception_table_length = cfs->get_u2_fast();
|
|
|
1354 if (exception_table_length > 0) {
|
|
|
1355 exception_handlers =
|
|
|
1356 parse_exception_table(code_length, exception_table_length, cp, CHECK_(nullHandle));
|
|
|
1357 }
|
|
|
1358
|
|
|
1359 // Parse additional attributes in code attribute
|
|
|
1360 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count
|
|
|
1361 u2 code_attributes_count = cfs->get_u2_fast();
|
|
|
1362 unsigned int calculated_attribute_length = sizeof(max_stack) +
|
|
|
1363 sizeof(max_locals) +
|
|
|
1364 sizeof(code_length) +
|
|
|
1365 code_length +
|
|
|
1366 sizeof(exception_table_length) +
|
|
|
1367 sizeof(code_attributes_count) +
|
|
|
1368 exception_table_length*(sizeof(u2) /* start_pc */+
|
|
|
1369 sizeof(u2) /* end_pc */ +
|
|
|
1370 sizeof(u2) /* handler_pc */ +
|
|
|
1371 sizeof(u2) /* catch_type_index */);
|
|
|
1372
|
|
|
1373 while (code_attributes_count--) {
|
|
|
1374 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length
|
|
|
1375 u2 code_attribute_name_index = cfs->get_u2_fast();
|
|
|
1376 u4 code_attribute_length = cfs->get_u4_fast();
|
|
|
1377 calculated_attribute_length += code_attribute_length +
|
|
|
1378 sizeof(code_attribute_name_index) +
|
|
|
1379 sizeof(code_attribute_length);
|
|
|
1380 check_property(valid_cp_range(code_attribute_name_index, cp_size) &&
|
|
|
1381 cp->tag_at(code_attribute_name_index).is_utf8(),
|
|
|
1382 "Invalid code attribute name index %u in class file %s",
|
|
|
1383 code_attribute_name_index,
|
|
|
1384 CHECK_(nullHandle));
|
|
|
1385 if (LoadLineNumberTables &&
|
|
|
1386 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) {
|
|
|
1387 // Parse and compress line number table
|
|
|
1388 parse_linenumber_table(code_attribute_length, code_length,
|
|
|
1389 &linenumber_table, CHECK_(nullHandle));
|
|
|
1390
|
|
|
1391 } else if (LoadLocalVariableTables &&
|
|
|
1392 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) {
|
|
|
1393 // Parse local variable table
|
|
|
1394 if (!lvt_allocated) {
|
|
|
1395 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
1396 THREAD, u2, INITIAL_MAX_LVT_NUMBER);
|
|
|
1397 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
1398 THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
|
|
|
1399 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
1400 THREAD, u2, INITIAL_MAX_LVT_NUMBER);
|
|
|
1401 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
1402 THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
|
|
|
1403 lvt_allocated = true;
|
|
|
1404 }
|
|
|
1405 if (lvt_cnt == max_lvt_cnt) {
|
|
|
1406 max_lvt_cnt <<= 1;
|
|
|
1407 REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt);
|
|
|
1408 REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt);
|
|
|
1409 }
|
|
|
1410 localvariable_table_start[lvt_cnt] =
|
|
|
1411 parse_localvariable_table(code_length,
|
|
|
1412 max_locals,
|
|
|
1413 code_attribute_length,
|
|
|
1414 cp,
|
|
|
1415 &localvariable_table_length[lvt_cnt],
|
|
|
1416 false, // is not LVTT
|
|
|
1417 CHECK_(nullHandle));
|
|
|
1418 total_lvt_length += localvariable_table_length[lvt_cnt];
|
|
|
1419 lvt_cnt++;
|
|
|
1420 } else if (LoadLocalVariableTypeTables &&
|
|
|
1421 _major_version >= JAVA_1_5_VERSION &&
|
|
|
1422 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) {
|
|
|
1423 if (!lvt_allocated) {
|
|
|
1424 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
1425 THREAD, u2, INITIAL_MAX_LVT_NUMBER);
|
|
|
1426 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
1427 THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
|
|
|
1428 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
1429 THREAD, u2, INITIAL_MAX_LVT_NUMBER);
|
|
|
1430 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
1431 THREAD, u2*, INITIAL_MAX_LVT_NUMBER);
|
|
|
1432 lvt_allocated = true;
|
|
|
1433 }
|
|
|
1434 // Parse local variable type table
|
|
|
1435 if (lvtt_cnt == max_lvtt_cnt) {
|
|
|
1436 max_lvtt_cnt <<= 1;
|
|
|
1437 REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt);
|
|
|
1438 REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt);
|
|
|
1439 }
|
|
|
1440 localvariable_type_table_start[lvtt_cnt] =
|
|
|
1441 parse_localvariable_table(code_length,
|
|
|
1442 max_locals,
|
|
|
1443 code_attribute_length,
|
|
|
1444 cp,
|
|
|
1445 &localvariable_type_table_length[lvtt_cnt],
|
|
|
1446 true, // is LVTT
|
|
|
1447 CHECK_(nullHandle));
|
|
|
1448 lvtt_cnt++;
|
|
|
1449 } else if (UseSplitVerifier &&
|
|
|
1450 _major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION &&
|
|
|
1451 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) {
|
|
|
1452 // Stack map is only needed by the new verifier in JDK1.5.
|
|
|
1453 if (parsed_stackmap_attribute) {
|
|
|
1454 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle));
|
|
|
1455 }
|
|
|
1456 typeArrayOop sm =
|
|
|
1457 parse_stackmap_table(code_attribute_length, CHECK_(nullHandle));
|
|
|
1458 stackmap_data = typeArrayHandle(THREAD, sm);
|
|
|
1459 parsed_stackmap_attribute = true;
|
|
|
1460 } else {
|
|
|
1461 // Skip unknown attributes
|
|
|
1462 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle));
|
|
|
1463 }
|
|
|
1464 }
|
|
|
1465 // check method attribute length
|
|
|
1466 if (_need_verify) {
|
|
|
1467 guarantee_property(method_attribute_length == calculated_attribute_length,
|
|
|
1468 "Code segment has wrong length in class file %s", CHECK_(nullHandle));
|
|
|
1469 }
|
|
|
1470 } else if (method_attribute_name == vmSymbols::tag_exceptions()) {
|
|
|
1471 // Parse Exceptions attribute
|
|
|
1472 if (parsed_checked_exceptions_attribute) {
|
|
|
1473 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle));
|
|
|
1474 }
|
|
|
1475 parsed_checked_exceptions_attribute = true;
|
|
|
1476 checked_exceptions_start =
|
|
|
1477 parse_checked_exceptions(&checked_exceptions_length,
|
|
|
1478 method_attribute_length,
|
|
|
1479 cp, CHECK_(nullHandle));
|
|
|
1480 } else if (method_attribute_name == vmSymbols::tag_synthetic()) {
|
|
|
1481 if (method_attribute_length != 0) {
|
|
|
1482 classfile_parse_error(
|
|
|
1483 "Invalid Synthetic method attribute length %u in class file %s",
|
|
|
1484 method_attribute_length, CHECK_(nullHandle));
|
|
|
1485 }
|
|
|
1486 // Should we check that there hasn't already been a synthetic attribute?
|
|
|
1487 access_flags.set_is_synthetic();
|
|
|
1488 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120
|
|
|
1489 if (method_attribute_length != 0) {
|
|
|
1490 classfile_parse_error(
|
|
|
1491 "Invalid Deprecated method attribute length %u in class file %s",
|
|
|
1492 method_attribute_length, CHECK_(nullHandle));
|
|
|
1493 }
|
|
|
1494 } else if (_major_version >= JAVA_1_5_VERSION) {
|
|
|
1495 if (method_attribute_name == vmSymbols::tag_signature()) {
|
|
|
1496 if (method_attribute_length != 2) {
|
|
|
1497 classfile_parse_error(
|
|
|
1498 "Invalid Signature attribute length %u in class file %s",
|
|
|
1499 method_attribute_length, CHECK_(nullHandle));
|
|
|
1500 }
|
|
|
1501 cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index
|
|
|
1502 generic_signature_index = cfs->get_u2_fast();
|
|
|
1503 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) {
|
|
|
1504 runtime_visible_annotations_length = method_attribute_length;
|
|
|
1505 runtime_visible_annotations = cfs->get_u1_buffer();
|
|
|
1506 assert(runtime_visible_annotations != NULL, "null visible annotations");
|
|
|
1507 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle));
|
|
|
1508 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) {
|
|
|
1509 runtime_invisible_annotations_length = method_attribute_length;
|
|
|
1510 runtime_invisible_annotations = cfs->get_u1_buffer();
|
|
|
1511 assert(runtime_invisible_annotations != NULL, "null invisible annotations");
|
|
|
1512 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle));
|
|
|
1513 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) {
|
|
|
1514 runtime_visible_parameter_annotations_length = method_attribute_length;
|
|
|
1515 runtime_visible_parameter_annotations = cfs->get_u1_buffer();
|
|
|
1516 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations");
|
|
|
1517 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle));
|
|
|
1518 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) {
|
|
|
1519 runtime_invisible_parameter_annotations_length = method_attribute_length;
|
|
|
1520 runtime_invisible_parameter_annotations = cfs->get_u1_buffer();
|
|
|
1521 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations");
|
|
|
1522 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle));
|
|
|
1523 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) {
|
|
|
1524 annotation_default_length = method_attribute_length;
|
|
|
1525 annotation_default = cfs->get_u1_buffer();
|
|
|
1526 assert(annotation_default != NULL, "null annotation default");
|
|
|
1527 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle));
|
|
|
1528 } else {
|
|
|
1529 // Skip unknown attributes
|
|
|
1530 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle));
|
|
|
1531 }
|
|
|
1532 } else {
|
|
|
1533 // Skip unknown attributes
|
|
|
1534 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle));
|
|
|
1535 }
|
|
|
1536 }
|
|
|
1537
|
|
|
1538 if (linenumber_table != NULL) {
|
|
|
1539 linenumber_table->write_terminator();
|
|
|
1540 linenumber_table_length = linenumber_table->position();
|
|
|
1541 }
|
|
|
1542
|
|
|
1543 // Make sure there's at least one Code attribute in non-native/non-abstract method
|
|
|
1544 if (_need_verify) {
|
|
|
1545 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute,
|
|
|
1546 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle));
|
|
|
1547 }
|
|
|
1548
|
|
|
1549 // All sizing information for a methodOop is finally available, now create it
|
|
|
1550 methodOop m_oop = oopFactory::new_method(
|
|
|
1551 code_length, access_flags, linenumber_table_length,
|
|
|
1552 total_lvt_length, checked_exceptions_length, CHECK_(nullHandle));
|
|
|
1553 methodHandle m (THREAD, m_oop);
|
|
|
1554
|
|
|
1555 ClassLoadingService::add_class_method_size(m_oop->size()*HeapWordSize);
|
|
|
1556
|
|
|
1557 // Fill in information from fixed part (access_flags already set)
|
|
|
1558 m->set_constants(cp());
|
|
|
1559 m->set_name_index(name_index);
|
|
|
1560 m->set_signature_index(signature_index);
|
|
|
1561 m->set_generic_signature_index(generic_signature_index);
|
|
|
1562 #ifdef CC_INTERP
|
|
|
1563 // hmm is there a gc issue here??
|
|
|
1564 ResultTypeFinder rtf(cp->symbol_at(signature_index));
|
|
|
1565 m->set_result_index(rtf.type());
|
|
|
1566 #endif
|
|
|
1567
|
|
|
1568 if (args_size >= 0) {
|
|
|
1569 m->set_size_of_parameters(args_size);
|
|
|
1570 } else {
|
|
|
1571 m->compute_size_of_parameters(THREAD);
|
|
|
1572 }
|
|
|
1573 #ifdef ASSERT
|
|
|
1574 if (args_size >= 0) {
|
|
|
1575 m->compute_size_of_parameters(THREAD);
|
|
|
1576 assert(args_size == m->size_of_parameters(), "");
|
|
|
1577 }
|
|
|
1578 #endif
|
|
|
1579
|
|
|
1580 // Fill in code attribute information
|
|
|
1581 m->set_max_stack(max_stack);
|
|
|
1582 m->set_max_locals(max_locals);
|
|
|
1583 m->constMethod()->set_stackmap_data(stackmap_data());
|
|
|
1584
|
|
|
1585 /**
|
|
|
1586 * The exception_table field is the flag used to indicate
|
|
|
1587 * that the methodOop and it's associated constMethodOop are partially
|
|
|
1588 * initialized and thus are exempt from pre/post GC verification. Once
|
|
|
1589 * the field is set, the oops are considered fully initialized so make
|
|
|
1590 * sure that the oops can pass verification when this field is set.
|
|
|
1591 */
|
|
|
1592 m->set_exception_table(exception_handlers());
|
|
|
1593
|
|
|
1594 // Copy byte codes
|
|
|
1595 if (code_length > 0) {
|
|
|
1596 memcpy(m->code_base(), code_start, code_length);
|
|
|
1597 }
|
|
|
1598
|
|
|
1599 // Copy line number table
|
|
|
1600 if (linenumber_table != NULL) {
|
|
|
1601 memcpy(m->compressed_linenumber_table(),
|
|
|
1602 linenumber_table->buffer(), linenumber_table_length);
|
|
|
1603 }
|
|
|
1604
|
|
|
1605 // Copy checked exceptions
|
|
|
1606 if (checked_exceptions_length > 0) {
|
|
|
1607 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2);
|
|
|
1608 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size);
|
|
|
1609 }
|
|
|
1610
|
|
|
1611 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT.
|
|
|
1612 *
|
|
|
1613 * Rules for LVT's and LVTT's are:
|
|
|
1614 * - There can be any number of LVT's and LVTT's.
|
|
|
1615 * - If there are n LVT's, it is the same as if there was just
|
|
|
1616 * one LVT containing all the entries from the n LVT's.
|
|
|
1617 * - There may be no more than one LVT entry per local variable.
|
|
|
1618 * Two LVT entries are 'equal' if these fields are the same:
|
|
|
1619 * start_pc, length, name, slot
|
|
|
1620 * - There may be no more than one LVTT entry per each LVT entry.
|
|
|
1621 * Each LVTT entry has to match some LVT entry.
|
|
|
1622 * - HotSpot internal LVT keeps natural ordering of class file LVT entries.
|
|
|
1623 */
|
|
|
1624 if (total_lvt_length > 0) {
|
|
|
1625 int tbl_no, idx;
|
|
|
1626
|
|
|
1627 promoted_flags->set_has_localvariable_table();
|
|
|
1628
|
|
|
1629 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE);
|
|
|
1630 initialize_hashtable(lvt_Hash);
|
|
|
1631
|
|
|
1632 // To fill LocalVariableTable in
|
|
|
1633 Classfile_LVT_Element* cf_lvt;
|
|
|
1634 LocalVariableTableElement* lvt = m->localvariable_table_start();
|
|
|
1635
|
|
|
1636 for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) {
|
|
|
1637 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no];
|
|
|
1638 for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) {
|
|
|
1639 copy_lvt_element(&cf_lvt[idx], lvt);
|
|
|
1640 // If no duplicates, add LVT elem in hashtable lvt_Hash.
|
|
|
1641 if (LVT_put_after_lookup(lvt, lvt_Hash) == false
|
|
|
1642 && _need_verify
|
|
|
1643 && _major_version >= JAVA_1_5_VERSION ) {
|
|
|
1644 clear_hashtable(lvt_Hash);
|
|
|
1645 classfile_parse_error("Duplicated LocalVariableTable attribute "
|
|
|
1646 "entry for '%s' in class file %s",
|
|
|
1647 cp->symbol_at(lvt->name_cp_index)->as_utf8(),
|
|
|
1648 CHECK_(nullHandle));
|
|
|
1649 }
|
|
|
1650 }
|
|
|
1651 }
|
|
|
1652
|
|
|
1653 // To merge LocalVariableTable and LocalVariableTypeTable
|
|
|
1654 Classfile_LVT_Element* cf_lvtt;
|
|
|
1655 LocalVariableTableElement lvtt_elem;
|
|
|
1656
|
|
|
1657 for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) {
|
|
|
1658 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no];
|
|
|
1659 for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) {
|
|
|
1660 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem);
|
|
|
1661 int index = hash(&lvtt_elem);
|
|
|
1662 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash);
|
|
|
1663 if (entry == NULL) {
|
|
|
1664 if (_need_verify) {
|
|
|
1665 clear_hashtable(lvt_Hash);
|
|
|
1666 classfile_parse_error("LVTT entry for '%s' in class file %s "
|
|
|
1667 "does not match any LVT entry",
|
|
|
1668 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(),
|
|
|
1669 CHECK_(nullHandle));
|
|
|
1670 }
|
|
|
1671 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) {
|
|
|
1672 clear_hashtable(lvt_Hash);
|
|
|
1673 classfile_parse_error("Duplicated LocalVariableTypeTable attribute "
|
|
|
1674 "entry for '%s' in class file %s",
|
|
|
1675 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(),
|
|
|
1676 CHECK_(nullHandle));
|
|
|
1677 } else {
|
|
|
1678 // to add generic signatures into LocalVariableTable
|
|
|
1679 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index;
|
|
|
1680 }
|
|
|
1681 }
|
|
|
1682 }
|
|
|
1683 clear_hashtable(lvt_Hash);
|
|
|
1684 }
|
|
|
1685
|
|
|
1686 *method_annotations = assemble_annotations(runtime_visible_annotations,
|
|
|
1687 runtime_visible_annotations_length,
|
|
|
1688 runtime_invisible_annotations,
|
|
|
1689 runtime_invisible_annotations_length,
|
|
|
1690 CHECK_(nullHandle));
|
|
|
1691 *method_parameter_annotations = assemble_annotations(runtime_visible_parameter_annotations,
|
|
|
1692 runtime_visible_parameter_annotations_length,
|
|
|
1693 runtime_invisible_parameter_annotations,
|
|
|
1694 runtime_invisible_parameter_annotations_length,
|
|
|
1695 CHECK_(nullHandle));
|
|
|
1696 *method_default_annotations = assemble_annotations(annotation_default,
|
|
|
1697 annotation_default_length,
|
|
|
1698 NULL,
|
|
|
1699 0,
|
|
|
1700 CHECK_(nullHandle));
|
|
|
1701
|
|
|
1702 if (name() == vmSymbols::finalize_method_name() &&
|
|
|
1703 signature() == vmSymbols::void_method_signature()) {
|
|
|
1704 if (m->is_empty_method()) {
|
|
|
1705 _has_empty_finalizer = true;
|
|
|
1706 } else {
|
|
|
1707 _has_finalizer = true;
|
|
|
1708 }
|
|
|
1709 }
|
|
|
1710 if (name() == vmSymbols::object_initializer_name() &&
|
|
|
1711 signature() == vmSymbols::void_method_signature() &&
|
|
|
1712 m->is_vanilla_constructor()) {
|
|
|
1713 _has_vanilla_constructor = true;
|
|
|
1714 }
|
|
|
1715
|
|
|
1716 return m;
|
|
|
1717 }
|
|
|
1718
|
|
|
1719
|
|
|
1720 // The promoted_flags parameter is used to pass relevant access_flags
|
|
|
1721 // from the methods back up to the containing klass. These flag values
|
|
|
1722 // are added to klass's access_flags.
|
|
|
1723
|
|
|
1724 objArrayHandle ClassFileParser::parse_methods(constantPoolHandle cp, bool is_interface,
|
|
|
1725 AccessFlags* promoted_flags,
|
|
|
1726 bool* has_final_method,
|
|
|
1727 objArrayOop* methods_annotations_oop,
|
|
|
1728 objArrayOop* methods_parameter_annotations_oop,
|
|
|
1729 objArrayOop* methods_default_annotations_oop,
|
|
|
1730 TRAPS) {
|
|
|
1731 ClassFileStream* cfs = stream();
|
|
|
1732 objArrayHandle nullHandle;
|
|
|
1733 typeArrayHandle method_annotations;
|
|
|
1734 typeArrayHandle method_parameter_annotations;
|
|
|
1735 typeArrayHandle method_default_annotations;
|
|
|
1736 cfs->guarantee_more(2, CHECK_(nullHandle)); // length
|
|
|
1737 u2 length = cfs->get_u2_fast();
|
|
|
1738 if (length == 0) {
|
|
|
1739 return objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
|
|
|
1740 } else {
|
|
|
1741 objArrayOop m = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
|
1742 objArrayHandle methods(THREAD, m);
|
|
|
1743 HandleMark hm(THREAD);
|
|
|
1744 objArrayHandle methods_annotations;
|
|
|
1745 objArrayHandle methods_parameter_annotations;
|
|
|
1746 objArrayHandle methods_default_annotations;
|
|
|
1747 for (int index = 0; index < length; index++) {
|
|
|
1748 methodHandle method = parse_method(cp, is_interface,
|
|
|
1749 promoted_flags,
|
|
|
1750 &method_annotations,
|
|
|
1751 &method_parameter_annotations,
|
|
|
1752 &method_default_annotations,
|
|
|
1753 CHECK_(nullHandle));
|
|
|
1754 if (method->is_final()) {
|
|
|
1755 *has_final_method = true;
|
|
|
1756 }
|
|
|
1757 methods->obj_at_put(index, method());
|
|
|
1758 if (method_annotations.not_null()) {
|
|
|
1759 if (methods_annotations.is_null()) {
|
|
|
1760 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
|
1761 methods_annotations = objArrayHandle(THREAD, md);
|
|
|
1762 }
|
|
|
1763 methods_annotations->obj_at_put(index, method_annotations());
|
|
|
1764 }
|
|
|
1765 if (method_parameter_annotations.not_null()) {
|
|
|
1766 if (methods_parameter_annotations.is_null()) {
|
|
|
1767 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
|
1768 methods_parameter_annotations = objArrayHandle(THREAD, md);
|
|
|
1769 }
|
|
|
1770 methods_parameter_annotations->obj_at_put(index, method_parameter_annotations());
|
|
|
1771 }
|
|
|
1772 if (method_default_annotations.not_null()) {
|
|
|
1773 if (methods_default_annotations.is_null()) {
|
|
|
1774 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle));
|
|
|
1775 methods_default_annotations = objArrayHandle(THREAD, md);
|
|
|
1776 }
|
|
|
1777 methods_default_annotations->obj_at_put(index, method_default_annotations());
|
|
|
1778 }
|
|
|
1779 }
|
|
|
1780 if (_need_verify && length > 1) {
|
|
|
1781 // Check duplicated methods
|
|
|
1782 ResourceMark rm(THREAD);
|
|
|
1783 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
1784 THREAD, NameSigHash*, HASH_ROW_SIZE);
|
|
|
1785 initialize_hashtable(names_and_sigs);
|
|
|
1786 bool dup = false;
|
|
|
1787 {
|
|
|
1788 debug_only(No_Safepoint_Verifier nsv;)
|
|
|
1789 for (int i = 0; i < length; i++) {
|
|
|
1790 methodOop m = (methodOop)methods->obj_at(i);
|
|
|
1791 // If no duplicates, add name/signature in hashtable names_and_sigs.
|
|
|
1792 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) {
|
|
|
1793 dup = true;
|
|
|
1794 break;
|
|
|
1795 }
|
|
|
1796 }
|
|
|
1797 }
|
|
|
1798 if (dup) {
|
|
|
1799 classfile_parse_error("Duplicate method name&signature in class file %s",
|
|
|
1800 CHECK_(nullHandle));
|
|
|
1801 }
|
|
|
1802 }
|
|
|
1803
|
|
|
1804 *methods_annotations_oop = methods_annotations();
|
|
|
1805 *methods_parameter_annotations_oop = methods_parameter_annotations();
|
|
|
1806 *methods_default_annotations_oop = methods_default_annotations();
|
|
|
1807
|
|
|
1808 return methods;
|
|
|
1809 }
|
|
|
1810 }
|
|
|
1811
|
|
|
1812
|
|
|
1813 typeArrayHandle ClassFileParser::sort_methods(objArrayHandle methods,
|
|
|
1814 objArrayHandle methods_annotations,
|
|
|
1815 objArrayHandle methods_parameter_annotations,
|
|
|
1816 objArrayHandle methods_default_annotations,
|
|
|
1817 TRAPS) {
|
|
|
1818 typeArrayHandle nullHandle;
|
|
|
1819 int length = methods()->length();
|
|
|
1820 // If JVMTI original method ordering is enabled we have to
|
|
|
1821 // remember the original class file ordering.
|
|
|
1822 // We temporarily use the vtable_index field in the methodOop to store the
|
|
|
1823 // class file index, so we can read in after calling qsort.
|
|
|
1824 if (JvmtiExport::can_maintain_original_method_order()) {
|
|
|
1825 for (int index = 0; index < length; index++) {
|
|
|
1826 methodOop m = methodOop(methods->obj_at(index));
|
|
|
1827 assert(!m->valid_vtable_index(), "vtable index should not be set");
|
|
|
1828 m->set_vtable_index(index);
|
|
|
1829 }
|
|
|
1830 }
|
|
|
1831 // Sort method array by ascending method name (for faster lookups & vtable construction)
|
|
|
1832 // Note that the ordering is not alphabetical, see symbolOopDesc::fast_compare
|
|
|
1833 methodOopDesc::sort_methods(methods(),
|
|
|
1834 methods_annotations(),
|
|
|
1835 methods_parameter_annotations(),
|
|
|
1836 methods_default_annotations());
|
|
|
1837
|
|
|
1838 // If JVMTI original method ordering is enabled construct int array remembering the original ordering
|
|
|
1839 if (JvmtiExport::can_maintain_original_method_order()) {
|
|
|
1840 typeArrayOop new_ordering = oopFactory::new_permanent_intArray(length, CHECK_(nullHandle));
|
|
|
1841 typeArrayHandle method_ordering(THREAD, new_ordering);
|
|
|
1842 for (int index = 0; index < length; index++) {
|
|
|
1843 methodOop m = methodOop(methods->obj_at(index));
|
|
|
1844 int old_index = m->vtable_index();
|
|
|
1845 assert(old_index >= 0 && old_index < length, "invalid method index");
|
|
|
1846 method_ordering->int_at_put(index, old_index);
|
|
|
1847 m->set_vtable_index(methodOopDesc::invalid_vtable_index);
|
|
|
1848 }
|
|
|
1849 return method_ordering;
|
|
|
1850 } else {
|
|
|
1851 return typeArrayHandle(THREAD, Universe::the_empty_int_array());
|
|
|
1852 }
|
|
|
1853 }
|
|
|
1854
|
|
|
1855
|
|
|
1856 void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
|
1857 ClassFileStream* cfs = stream();
|
|
|
1858 cfs->guarantee_more(2, CHECK); // sourcefile_index
|
|
|
1859 u2 sourcefile_index = cfs->get_u2_fast();
|
|
|
1860 check_property(
|
|
|
1861 valid_cp_range(sourcefile_index, cp->length()) &&
|
|
|
1862 cp->tag_at(sourcefile_index).is_utf8(),
|
|
|
1863 "Invalid SourceFile attribute at constant pool index %u in class file %s",
|
|
|
1864 sourcefile_index, CHECK);
|
|
|
1865 k->set_source_file_name(cp->symbol_at(sourcefile_index));
|
|
|
1866 }
|
|
|
1867
|
|
|
1868
|
|
|
1869
|
|
|
1870 void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp,
|
|
|
1871 instanceKlassHandle k,
|
|
|
1872 int length, TRAPS) {
|
|
|
1873 ClassFileStream* cfs = stream();
|
|
|
1874 u1* sde_buffer = cfs->get_u1_buffer();
|
|
|
1875 assert(sde_buffer != NULL, "null sde buffer");
|
|
|
1876
|
|
|
1877 // Don't bother storing it if there is no way to retrieve it
|
|
|
1878 if (JvmtiExport::can_get_source_debug_extension()) {
|
|
|
1879 // Optimistically assume that only 1 byte UTF format is used
|
|
|
1880 // (common case)
|
|
|
1881 symbolOop sde_symbol = oopFactory::new_symbol((char*)sde_buffer,
|
|
|
1882 length, CHECK);
|
|
|
1883 k->set_source_debug_extension(sde_symbol);
|
|
|
1884 }
|
|
|
1885 // Got utf8 string, set stream position forward
|
|
|
1886 cfs->skip_u1(length, CHECK);
|
|
|
1887 }
|
|
|
1888
|
|
|
1889
|
|
|
1890 // Inner classes can be static, private or protected (classic VM does this)
|
|
|
1891 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC)
|
|
|
1892
|
|
|
1893 // Return number of classes in the inner classes attribute table
|
|
|
1894 u2 ClassFileParser::parse_classfile_inner_classes_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
|
1895 ClassFileStream* cfs = stream();
|
|
|
1896 cfs->guarantee_more(2, CHECK_0); // length
|
|
|
1897 u2 length = cfs->get_u2_fast();
|
|
|
1898
|
|
|
1899 // 4-tuples of shorts [inner_class_info_index, outer_class_info_index, inner_name_index, inner_class_access_flags]
|
|
|
1900 typeArrayOop ic = oopFactory::new_permanent_shortArray(length*4, CHECK_0);
|
|
|
1901 typeArrayHandle inner_classes(THREAD, ic);
|
|
|
1902 int index = 0;
|
|
|
1903 int cp_size = cp->length();
|
|
|
1904 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2
|
|
|
1905 for (int n = 0; n < length; n++) {
|
|
|
1906 // Inner class index
|
|
|
1907 u2 inner_class_info_index = cfs->get_u2_fast();
|
|
|
1908 check_property(
|
|
|
1909 inner_class_info_index == 0 ||
|
|
|
1910 (valid_cp_range(inner_class_info_index, cp_size) &&
|
|
|
1911 cp->tag_at(inner_class_info_index).is_klass_reference()),
|
|
|
1912 "inner_class_info_index %u has bad constant type in class file %s",
|
|
|
1913 inner_class_info_index, CHECK_0);
|
|
|
1914 // Outer class index
|
|
|
1915 u2 outer_class_info_index = cfs->get_u2_fast();
|
|
|
1916 check_property(
|
|
|
1917 outer_class_info_index == 0 ||
|
|
|
1918 (valid_cp_range(outer_class_info_index, cp_size) &&
|
|
|
1919 cp->tag_at(outer_class_info_index).is_klass_reference()),
|
|
|
1920 "outer_class_info_index %u has bad constant type in class file %s",
|
|
|
1921 outer_class_info_index, CHECK_0);
|
|
|
1922 // Inner class name
|
|
|
1923 u2 inner_name_index = cfs->get_u2_fast();
|
|
|
1924 check_property(
|
|
|
1925 inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) &&
|
|
|
1926 cp->tag_at(inner_name_index).is_utf8()),
|
|
|
1927 "inner_name_index %u has bad constant type in class file %s",
|
|
|
1928 inner_name_index, CHECK_0);
|
|
|
1929 if (_need_verify) {
|
|
|
1930 guarantee_property(inner_class_info_index != outer_class_info_index,
|
|
|
1931 "Class is both outer and inner class in class file %s", CHECK_0);
|
|
|
1932 }
|
|
|
1933 // Access flags
|
|
|
1934 AccessFlags inner_access_flags;
|
|
|
1935 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS;
|
|
|
1936 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) {
|
|
|
1937 // Set abstract bit for old class files for backward compatibility
|
|
|
1938 flags |= JVM_ACC_ABSTRACT;
|
|
|
1939 }
|
|
|
1940 verify_legal_class_modifiers(flags, CHECK_0);
|
|
|
1941 inner_access_flags.set_flags(flags);
|
|
|
1942
|
|
|
1943 inner_classes->short_at_put(index++, inner_class_info_index);
|
|
|
1944 inner_classes->short_at_put(index++, outer_class_info_index);
|
|
|
1945 inner_classes->short_at_put(index++, inner_name_index);
|
|
|
1946 inner_classes->short_at_put(index++, inner_access_flags.as_short());
|
|
|
1947 }
|
|
|
1948
|
|
|
1949 // 4347400: make sure there's no duplicate entry in the classes array
|
|
|
1950 if (_need_verify && _major_version >= JAVA_1_5_VERSION) {
|
|
|
1951 for(int i = 0; i < inner_classes->length(); i += 4) {
|
|
|
1952 for(int j = i + 4; j < inner_classes->length(); j += 4) {
|
|
|
1953 guarantee_property((inner_classes->ushort_at(i) != inner_classes->ushort_at(j) ||
|
|
|
1954 inner_classes->ushort_at(i+1) != inner_classes->ushort_at(j+1) ||
|
|
|
1955 inner_classes->ushort_at(i+2) != inner_classes->ushort_at(j+2) ||
|
|
|
1956 inner_classes->ushort_at(i+3) != inner_classes->ushort_at(j+3)),
|
|
|
1957 "Duplicate entry in InnerClasses in class file %s",
|
|
|
1958 CHECK_0);
|
|
|
1959 }
|
|
|
1960 }
|
|
|
1961 }
|
|
|
1962
|
|
|
1963 // Update instanceKlass with inner class info.
|
|
|
1964 k->set_inner_classes(inner_classes());
|
|
|
1965 return length;
|
|
|
1966 }
|
|
|
1967
|
|
|
1968 void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
|
1969 k->set_is_synthetic();
|
|
|
1970 }
|
|
|
1971
|
|
|
1972 void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
|
1973 ClassFileStream* cfs = stream();
|
|
|
1974 u2 signature_index = cfs->get_u2(CHECK);
|
|
|
1975 check_property(
|
|
|
1976 valid_cp_range(signature_index, cp->length()) &&
|
|
|
1977 cp->tag_at(signature_index).is_utf8(),
|
|
|
1978 "Invalid constant pool index %u in Signature attribute in class file %s",
|
|
|
1979 signature_index, CHECK);
|
|
|
1980 k->set_generic_signature(cp->symbol_at(signature_index));
|
|
|
1981 }
|
|
|
1982
|
|
|
1983 void ClassFileParser::parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS) {
|
|
|
1984 ClassFileStream* cfs = stream();
|
|
|
1985 // Set inner classes attribute to default sentinel
|
|
|
1986 k->set_inner_classes(Universe::the_empty_short_array());
|
|
|
1987 cfs->guarantee_more(2, CHECK); // attributes_count
|
|
|
1988 u2 attributes_count = cfs->get_u2_fast();
|
|
|
1989 bool parsed_sourcefile_attribute = false;
|
|
|
1990 bool parsed_innerclasses_attribute = false;
|
|
|
1991 bool parsed_enclosingmethod_attribute = false;
|
|
|
1992 u1* runtime_visible_annotations = NULL;
|
|
|
1993 int runtime_visible_annotations_length = 0;
|
|
|
1994 u1* runtime_invisible_annotations = NULL;
|
|
|
1995 int runtime_invisible_annotations_length = 0;
|
|
|
1996 // Iterate over attributes
|
|
|
1997 while (attributes_count--) {
|
|
|
1998 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length
|
|
|
1999 u2 attribute_name_index = cfs->get_u2_fast();
|
|
|
2000 u4 attribute_length = cfs->get_u4_fast();
|
|
|
2001 check_property(
|
|
|
2002 valid_cp_range(attribute_name_index, cp->length()) &&
|
|
|
2003 cp->tag_at(attribute_name_index).is_utf8(),
|
|
|
2004 "Attribute name has bad constant pool index %u in class file %s",
|
|
|
2005 attribute_name_index, CHECK);
|
|
|
2006 symbolOop tag = cp->symbol_at(attribute_name_index);
|
|
|
2007 if (tag == vmSymbols::tag_source_file()) {
|
|
|
2008 // Check for SourceFile tag
|
|
|
2009 if (_need_verify) {
|
|
|
2010 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK);
|
|
|
2011 }
|
|
|
2012 if (parsed_sourcefile_attribute) {
|
|
|
2013 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK);
|
|
|
2014 } else {
|
|
|
2015 parsed_sourcefile_attribute = true;
|
|
|
2016 }
|
|
|
2017 parse_classfile_sourcefile_attribute(cp, k, CHECK);
|
|
|
2018 } else if (tag == vmSymbols::tag_source_debug_extension()) {
|
|
|
2019 // Check for SourceDebugExtension tag
|
|
|
2020 parse_classfile_source_debug_extension_attribute(cp, k, (int)attribute_length, CHECK);
|
|
|
2021 } else if (tag == vmSymbols::tag_inner_classes()) {
|
|
|
2022 // Check for InnerClasses tag
|
|
|
2023 if (parsed_innerclasses_attribute) {
|
|
|
2024 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK);
|
|
|
2025 } else {
|
|
|
2026 parsed_innerclasses_attribute = true;
|
|
|
2027 }
|
|
|
2028 u2 num_of_classes = parse_classfile_inner_classes_attribute(cp, k, CHECK);
|
|
|
2029 if (_need_verify && _major_version >= JAVA_1_5_VERSION) {
|
|
|
2030 guarantee_property(attribute_length == sizeof(num_of_classes) + 4 * sizeof(u2) * num_of_classes,
|
|
|
2031 "Wrong InnerClasses attribute length in class file %s", CHECK);
|
|
|
2032 }
|
|
|
2033 } else if (tag == vmSymbols::tag_synthetic()) {
|
|
|
2034 // Check for Synthetic tag
|
|
|
2035 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec
|
|
|
2036 if (attribute_length != 0) {
|
|
|
2037 classfile_parse_error(
|
|
|
2038 "Invalid Synthetic classfile attribute length %u in class file %s",
|
|
|
2039 attribute_length, CHECK);
|
|
|
2040 }
|
|
|
2041 parse_classfile_synthetic_attribute(cp, k, CHECK);
|
|
|
2042 } else if (tag == vmSymbols::tag_deprecated()) {
|
|
|
2043 // Check for Deprecatd tag - 4276120
|
|
|
2044 if (attribute_length != 0) {
|
|
|
2045 classfile_parse_error(
|
|
|
2046 "Invalid Deprecated classfile attribute length %u in class file %s",
|
|
|
2047 attribute_length, CHECK);
|
|
|
2048 }
|
|
|
2049 } else if (_major_version >= JAVA_1_5_VERSION) {
|
|
|
2050 if (tag == vmSymbols::tag_signature()) {
|
|
|
2051 if (attribute_length != 2) {
|
|
|
2052 classfile_parse_error(
|
|
|
2053 "Wrong Signature attribute length %u in class file %s",
|
|
|
2054 attribute_length, CHECK);
|
|
|
2055 }
|
|
|
2056 parse_classfile_signature_attribute(cp, k, CHECK);
|
|
|
2057 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) {
|
|
|
2058 runtime_visible_annotations_length = attribute_length;
|
|
|
2059 runtime_visible_annotations = cfs->get_u1_buffer();
|
|
|
2060 assert(runtime_visible_annotations != NULL, "null visible annotations");
|
|
|
2061 cfs->skip_u1(runtime_visible_annotations_length, CHECK);
|
|
|
2062 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) {
|
|
|
2063 runtime_invisible_annotations_length = attribute_length;
|
|
|
2064 runtime_invisible_annotations = cfs->get_u1_buffer();
|
|
|
2065 assert(runtime_invisible_annotations != NULL, "null invisible annotations");
|
|
|
2066 cfs->skip_u1(runtime_invisible_annotations_length, CHECK);
|
|
|
2067 } else if (tag == vmSymbols::tag_enclosing_method()) {
|
|
|
2068 if (parsed_enclosingmethod_attribute) {
|
|
|
2069 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK);
|
|
|
2070 } else {
|
|
|
2071 parsed_enclosingmethod_attribute = true;
|
|
|
2072 }
|
|
|
2073 cfs->guarantee_more(4, CHECK); // class_index, method_index
|
|
|
2074 u2 class_index = cfs->get_u2_fast();
|
|
|
2075 u2 method_index = cfs->get_u2_fast();
|
|
|
2076 if (class_index == 0) {
|
|
|
2077 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK);
|
|
|
2078 }
|
|
|
2079 // Validate the constant pool indices and types
|
|
|
2080 if (!cp->is_within_bounds(class_index) ||
|
|
|
2081 !cp->tag_at(class_index).is_klass_reference()) {
|
|
|
2082 classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK);
|
|
|
2083 }
|
|
|
2084 if (method_index != 0 &&
|
|
|
2085 (!cp->is_within_bounds(method_index) ||
|
|
|
2086 !cp->tag_at(method_index).is_name_and_type())) {
|
|
|
2087 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK);
|
|
|
2088 }
|
|
|
2089 k->set_enclosing_method_indices(class_index, method_index);
|
|
|
2090 } else {
|
|
|
2091 // Unknown attribute
|
|
|
2092 cfs->skip_u1(attribute_length, CHECK);
|
|
|
2093 }
|
|
|
2094 } else {
|
|
|
2095 // Unknown attribute
|
|
|
2096 cfs->skip_u1(attribute_length, CHECK);
|
|
|
2097 }
|
|
|
2098 }
|
|
|
2099 typeArrayHandle annotations = assemble_annotations(runtime_visible_annotations,
|
|
|
2100 runtime_visible_annotations_length,
|
|
|
2101 runtime_invisible_annotations,
|
|
|
2102 runtime_invisible_annotations_length,
|
|
|
2103 CHECK);
|
|
|
2104 k->set_class_annotations(annotations());
|
|
|
2105 }
|
|
|
2106
|
|
|
2107
|
|
|
2108 typeArrayHandle ClassFileParser::assemble_annotations(u1* runtime_visible_annotations,
|
|
|
2109 int runtime_visible_annotations_length,
|
|
|
2110 u1* runtime_invisible_annotations,
|
|
|
2111 int runtime_invisible_annotations_length, TRAPS) {
|
|
|
2112 typeArrayHandle annotations;
|
|
|
2113 if (runtime_visible_annotations != NULL ||
|
|
|
2114 runtime_invisible_annotations != NULL) {
|
|
|
2115 typeArrayOop anno = oopFactory::new_permanent_byteArray(runtime_visible_annotations_length +
|
|
|
2116 runtime_invisible_annotations_length, CHECK_(annotations));
|
|
|
2117 annotations = typeArrayHandle(THREAD, anno);
|
|
|
2118 if (runtime_visible_annotations != NULL) {
|
|
|
2119 memcpy(annotations->byte_at_addr(0), runtime_visible_annotations, runtime_visible_annotations_length);
|
|
|
2120 }
|
|
|
2121 if (runtime_invisible_annotations != NULL) {
|
|
|
2122 memcpy(annotations->byte_at_addr(runtime_visible_annotations_length), runtime_invisible_annotations, runtime_invisible_annotations_length);
|
|
|
2123 }
|
|
|
2124 }
|
|
|
2125 return annotations;
|
|
|
2126 }
|
|
|
2127
|
|
|
2128
|
|
|
2129 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
|
|
|
2130 KlassHandle h_k (THREAD, fd->field_holder());
|
|
|
2131 assert(h_k.not_null() && fd->is_static(), "just checking");
|
|
|
2132 if (fd->has_initial_value()) {
|
|
|
2133 BasicType t = fd->field_type();
|
|
|
2134 switch (t) {
|
|
|
2135 case T_BYTE:
|
|
|
2136 h_k()->byte_field_put(fd->offset(), fd->int_initial_value());
|
|
|
2137 break;
|
|
|
2138 case T_BOOLEAN:
|
|
|
2139 h_k()->bool_field_put(fd->offset(), fd->int_initial_value());
|
|
|
2140 break;
|
|
|
2141 case T_CHAR:
|
|
|
2142 h_k()->char_field_put(fd->offset(), fd->int_initial_value());
|
|
|
2143 break;
|
|
|
2144 case T_SHORT:
|
|
|
2145 h_k()->short_field_put(fd->offset(), fd->int_initial_value());
|
|
|
2146 break;
|
|
|
2147 case T_INT:
|
|
|
2148 h_k()->int_field_put(fd->offset(), fd->int_initial_value());
|
|
|
2149 break;
|
|
|
2150 case T_FLOAT:
|
|
|
2151 h_k()->float_field_put(fd->offset(), fd->float_initial_value());
|
|
|
2152 break;
|
|
|
2153 case T_DOUBLE:
|
|
|
2154 h_k()->double_field_put(fd->offset(), fd->double_initial_value());
|
|
|
2155 break;
|
|
|
2156 case T_LONG:
|
|
|
2157 h_k()->long_field_put(fd->offset(), fd->long_initial_value());
|
|
|
2158 break;
|
|
|
2159 case T_OBJECT:
|
|
|
2160 {
|
|
|
2161 #ifdef ASSERT
|
|
|
2162 symbolOop sym = oopFactory::new_symbol("Ljava/lang/String;", CHECK);
|
|
|
2163 assert(fd->signature() == sym, "just checking");
|
|
|
2164 #endif
|
|
|
2165 oop string = fd->string_initial_value(CHECK);
|
|
|
2166 h_k()->obj_field_put(fd->offset(), string);
|
|
|
2167 }
|
|
|
2168 break;
|
|
|
2169 default:
|
|
|
2170 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
|
|
|
2171 "Illegal ConstantValue attribute in class file");
|
|
|
2172 }
|
|
|
2173 }
|
|
|
2174 }
|
|
|
2175
|
|
|
2176
|
|
|
2177 void ClassFileParser::java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr,
|
|
|
2178 constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS) {
|
|
|
2179 // This code is for compatibility with earlier jdk's that do not
|
|
|
2180 // have the "discovered" field in java.lang.ref.Reference. For 1.5
|
|
|
2181 // the check for the "discovered" field should issue a warning if
|
|
|
2182 // the field is not found. For 1.6 this code should be issue a
|
|
|
2183 // fatal error if the "discovered" field is not found.
|
|
|
2184 //
|
|
|
2185 // Increment fac.nonstatic_oop_count so that the start of the
|
|
|
2186 // next type of non-static oops leaves room for the fake oop.
|
|
|
2187 // Do not increment next_nonstatic_oop_offset so that the
|
|
|
2188 // fake oop is place after the java.lang.ref.Reference oop
|
|
|
2189 // fields.
|
|
|
2190 //
|
|
|
2191 // Check the fields in java.lang.ref.Reference for the "discovered"
|
|
|
2192 // field. If it is not present, artifically create a field for it.
|
|
|
2193 // This allows this VM to run on early JDK where the field is not
|
|
|
2194 // present.
|
|
|
2195
|
|
|
2196 //
|
|
|
2197 // Increment fac.nonstatic_oop_count so that the start of the
|
|
|
2198 // next type of non-static oops leaves room for the fake oop.
|
|
|
2199 // Do not increment next_nonstatic_oop_offset so that the
|
|
|
2200 // fake oop is place after the java.lang.ref.Reference oop
|
|
|
2201 // fields.
|
|
|
2202 //
|
|
|
2203 // Check the fields in java.lang.ref.Reference for the "discovered"
|
|
|
2204 // field. If it is not present, artifically create a field for it.
|
|
|
2205 // This allows this VM to run on early JDK where the field is not
|
|
|
2206 // present.
|
|
|
2207 int reference_sig_index = 0;
|
|
|
2208 int reference_name_index = 0;
|
|
|
2209 int reference_index = 0;
|
|
|
2210 int extra = java_lang_ref_Reference::number_of_fake_oop_fields;
|
|
|
2211 const int n = (*fields_ptr)()->length();
|
|
|
2212 for (int i = 0; i < n; i += instanceKlass::next_offset ) {
|
|
|
2213 int name_index =
|
|
|
2214 (*fields_ptr)()->ushort_at(i + instanceKlass::name_index_offset);
|
|
|
2215 int sig_index =
|
|
|
2216 (*fields_ptr)()->ushort_at(i + instanceKlass::signature_index_offset);
|
|
|
2217 symbolOop f_name = cp->symbol_at(name_index);
|
|
|
2218 symbolOop f_sig = cp->symbol_at(sig_index);
|
|
|
2219 if (f_sig == vmSymbols::reference_signature() && reference_index == 0) {
|
|
|
2220 // Save the index for reference signature for later use.
|
|
|
2221 // The fake discovered field does not entries in the
|
|
|
2222 // constant pool so the index for its signature cannot
|
|
|
2223 // be extracted from the constant pool. It will need
|
|
|
2224 // later, however. It's signature is vmSymbols::reference_signature()
|
|
|
2225 // so same an index for that signature.
|
|
|
2226 reference_sig_index = sig_index;
|
|
|
2227 reference_name_index = name_index;
|
|
|
2228 reference_index = i;
|
|
|
2229 }
|
|
|
2230 if (f_name == vmSymbols::reference_discovered_name() &&
|
|
|
2231 f_sig == vmSymbols::reference_signature()) {
|
|
|
2232 // The values below are fake but will force extra
|
|
|
2233 // non-static oop fields and a corresponding non-static
|
|
|
2234 // oop map block to be allocated.
|
|
|
2235 extra = 0;
|
|
|
2236 break;
|
|
|
2237 }
|
|
|
2238 }
|
|
|
2239 if (extra != 0) {
|
|
|
2240 fac_ptr->nonstatic_oop_count += extra;
|
|
|
2241 // Add the additional entry to "fields" so that the klass
|
|
|
2242 // contains the "discoverd" field and the field will be initialized
|
|
|
2243 // in instances of the object.
|
|
|
2244 int fields_with_fix_length = (*fields_ptr)()->length() +
|
|
|
2245 instanceKlass::next_offset;
|
|
|
2246 typeArrayOop ff = oopFactory::new_permanent_shortArray(
|
|
|
2247 fields_with_fix_length, CHECK);
|
|
|
2248 typeArrayHandle fields_with_fix(THREAD, ff);
|
|
|
2249
|
|
|
2250 // Take everything from the original but the length.
|
|
|
2251 for (int idx = 0; idx < (*fields_ptr)->length(); idx++) {
|
|
|
2252 fields_with_fix->ushort_at_put(idx, (*fields_ptr)->ushort_at(idx));
|
|
|
2253 }
|
|
|
2254
|
|
|
2255 // Add the fake field at the end.
|
|
|
2256 int i = (*fields_ptr)->length();
|
|
|
2257 // There is no name index for the fake "discovered" field nor
|
|
|
2258 // signature but a signature is needed so that the field will
|
|
|
2259 // be properly initialized. Use one found for
|
|
|
2260 // one of the other reference fields. Be sure the index for the
|
|
|
2261 // name is 0. In fieldDescriptor::initialize() the index of the
|
|
|
2262 // name is checked. That check is by passed for the last nonstatic
|
|
|
2263 // oop field in a java.lang.ref.Reference which is assumed to be
|
|
|
2264 // this artificial "discovered" field. An assertion checks that
|
|
|
2265 // the name index is 0.
|
|
|
2266 assert(reference_index != 0, "Missing signature for reference");
|
|
|
2267
|
|
|
2268 int j;
|
|
|
2269 for (j = 0; j < instanceKlass::next_offset; j++) {
|
|
|
2270 fields_with_fix->ushort_at_put(i + j,
|
|
|
2271 (*fields_ptr)->ushort_at(reference_index +j));
|
|
|
2272 }
|
|
|
2273 // Clear the public access flag and set the private access flag.
|
|
|
2274 short flags;
|
|
|
2275 flags =
|
|
|
2276 fields_with_fix->ushort_at(i + instanceKlass::access_flags_offset);
|
|
|
2277 assert(!(flags & JVM_RECOGNIZED_FIELD_MODIFIERS), "Unexpected access flags set");
|
|
|
2278 flags = flags & (~JVM_ACC_PUBLIC);
|
|
|
2279 flags = flags | JVM_ACC_PRIVATE;
|
|
|
2280 AccessFlags access_flags;
|
|
|
2281 access_flags.set_flags(flags);
|
|
|
2282 assert(!access_flags.is_public(), "Failed to clear public flag");
|
|
|
2283 assert(access_flags.is_private(), "Failed to set private flag");
|
|
|
2284 fields_with_fix->ushort_at_put(i + instanceKlass::access_flags_offset,
|
|
|
2285 flags);
|
|
|
2286
|
|
|
2287 assert(fields_with_fix->ushort_at(i + instanceKlass::name_index_offset)
|
|
|
2288 == reference_name_index, "The fake reference name is incorrect");
|
|
|
2289 assert(fields_with_fix->ushort_at(i + instanceKlass::signature_index_offset)
|
|
|
2290 == reference_sig_index, "The fake reference signature is incorrect");
|
|
|
2291 // The type of the field is stored in the low_offset entry during
|
|
|
2292 // parsing.
|
|
|
2293 assert(fields_with_fix->ushort_at(i + instanceKlass::low_offset) ==
|
|
|
2294 NONSTATIC_OOP, "The fake reference type is incorrect");
|
|
|
2295
|
|
|
2296 // "fields" is allocated in the permanent generation. Disgard
|
|
|
2297 // it and let it be collected.
|
|
|
2298 (*fields_ptr) = fields_with_fix;
|
|
|
2299 }
|
|
|
2300 return;
|
|
|
2301 }
|
|
|
2302
|
|
|
2303
|
|
|
2304 void ClassFileParser::java_lang_Class_fix_pre(objArrayHandle* methods_ptr,
|
|
|
2305 FieldAllocationCount *fac_ptr, TRAPS) {
|
|
|
2306 // Add fake fields for java.lang.Class instances
|
|
|
2307 //
|
|
|
2308 // This is not particularly nice. We should consider adding a
|
|
|
2309 // private transient object field at the Java level to
|
|
|
2310 // java.lang.Class. Alternatively we could add a subclass of
|
|
|
2311 // instanceKlass which provides an accessor and size computer for
|
|
|
2312 // this field, but that appears to be more code than this hack.
|
|
|
2313 //
|
|
|
2314 // NOTE that we wedge these in at the beginning rather than the
|
|
|
2315 // end of the object because the Class layout changed between JDK
|
|
|
2316 // 1.3 and JDK 1.4 with the new reflection implementation; some
|
|
|
2317 // nonstatic oop fields were added at the Java level. The offsets
|
|
|
2318 // of these fake fields can't change between these two JDK
|
|
|
2319 // versions because when the offsets are computed at bootstrap
|
|
|
2320 // time we don't know yet which version of the JDK we're running in.
|
|
|
2321
|
|
|
2322 // The values below are fake but will force two non-static oop fields and
|
|
|
2323 // a corresponding non-static oop map block to be allocated.
|
|
|
2324 const int extra = java_lang_Class::number_of_fake_oop_fields;
|
|
|
2325 fac_ptr->nonstatic_oop_count += extra;
|
|
|
2326 }
|
|
|
2327
|
|
|
2328
|
|
|
2329 void ClassFileParser::java_lang_Class_fix_post(int* next_nonstatic_oop_offset_ptr) {
|
|
|
2330 // Cause the extra fake fields in java.lang.Class to show up before
|
|
|
2331 // the Java fields for layout compatibility between 1.3 and 1.4
|
|
|
2332 // Incrementing next_nonstatic_oop_offset here advances the
|
|
|
2333 // location where the real java fields are placed.
|
|
|
2334 const int extra = java_lang_Class::number_of_fake_oop_fields;
|
|
|
2335 (*next_nonstatic_oop_offset_ptr) += (extra * wordSize);
|
|
|
2336 }
|
|
|
2337
|
|
|
2338
|
|
|
2339 instanceKlassHandle ClassFileParser::parseClassFile(symbolHandle name,
|
|
|
2340 Handle class_loader,
|
|
|
2341 Handle protection_domain,
|
|
|
2342 symbolHandle& parsed_name,
|
|
|
2343 TRAPS) {
|
|
|
2344 // So that JVMTI can cache class file in the state before retransformable agents
|
|
|
2345 // have modified it
|
|
|
2346 unsigned char *cached_class_file_bytes = NULL;
|
|
|
2347 jint cached_class_file_length;
|
|
|
2348
|
|
|
2349 ClassFileStream* cfs = stream();
|
|
|
2350 // Timing
|
|
|
2351 PerfTraceTime vmtimer(ClassLoader::perf_accumulated_time());
|
|
|
2352
|
|
|
2353 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false;
|
|
|
2354
|
|
|
2355 if (JvmtiExport::should_post_class_file_load_hook()) {
|
|
|
2356 unsigned char* ptr = cfs->buffer();
|
|
|
2357 unsigned char* end_ptr = cfs->buffer() + cfs->length();
|
|
|
2358
|
|
|
2359 JvmtiExport::post_class_file_load_hook(name, class_loader, protection_domain,
|
|
|
2360 &ptr, &end_ptr,
|
|
|
2361 &cached_class_file_bytes,
|
|
|
2362 &cached_class_file_length);
|
|
|
2363
|
|
|
2364 if (ptr != cfs->buffer()) {
|
|
|
2365 // JVMTI agent has modified class file data.
|
|
|
2366 // Set new class file stream using JVMTI agent modified
|
|
|
2367 // class file data.
|
|
|
2368 cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source());
|
|
|
2369 set_stream(cfs);
|
|
|
2370 }
|
|
|
2371 }
|
|
|
2372
|
|
|
2373
|
|
|
2374 instanceKlassHandle nullHandle;
|
|
|
2375
|
|
|
2376 // Figure out whether we can skip format checking (matching classic VM behavior)
|
|
|
2377 _need_verify = Verifier::should_verify_for(class_loader());
|
|
|
2378
|
|
|
2379 // Set the verify flag in stream
|
|
|
2380 cfs->set_verify(_need_verify);
|
|
|
2381
|
|
|
2382 // Save the class file name for easier error message printing.
|
|
|
2383 _class_name = name.not_null()? name : vmSymbolHandles::unknown_class_name();
|
|
|
2384
|
|
|
2385 cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor
|
|
|
2386 // Magic value
|
|
|
2387 u4 magic = cfs->get_u4_fast();
|
|
|
2388 guarantee_property(magic == JAVA_CLASSFILE_MAGIC,
|
|
|
2389 "Incompatible magic value %u in class file %s",
|
|
|
2390 magic, CHECK_(nullHandle));
|
|
|
2391
|
|
|
2392 // Version numbers
|
|
|
2393 u2 minor_version = cfs->get_u2_fast();
|
|
|
2394 u2 major_version = cfs->get_u2_fast();
|
|
|
2395
|
|
|
2396 // Check version numbers - we check this even with verifier off
|
|
|
2397 if (!is_supported_version(major_version, minor_version)) {
|
|
|
2398 if (name.is_null()) {
|
|
|
2399 Exceptions::fthrow(
|
|
|
2400 THREAD_AND_LOCATION,
|
|
|
2401 vmSymbolHandles::java_lang_UnsupportedClassVersionError(),
|
|
|
2402 "Unsupported major.minor version %u.%u",
|
|
|
2403 major_version,
|
|
|
2404 minor_version);
|
|
|
2405 } else {
|
|
|
2406 ResourceMark rm(THREAD);
|
|
|
2407 Exceptions::fthrow(
|
|
|
2408 THREAD_AND_LOCATION,
|
|
|
2409 vmSymbolHandles::java_lang_UnsupportedClassVersionError(),
|
|
|
2410 "%s : Unsupported major.minor version %u.%u",
|
|
|
2411 name->as_C_string(),
|
|
|
2412 major_version,
|
|
|
2413 minor_version);
|
|
|
2414 }
|
|
|
2415 return nullHandle;
|
|
|
2416 }
|
|
|
2417
|
|
|
2418 _major_version = major_version;
|
|
|
2419 _minor_version = minor_version;
|
|
|
2420
|
|
|
2421
|
|
|
2422 // Check if verification needs to be relaxed for this class file
|
|
|
2423 // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376)
|
|
|
2424 _relax_verify = Verifier::relax_verify_for(class_loader());
|
|
|
2425
|
|
|
2426 // Constant pool
|
|
|
2427 constantPoolHandle cp = parse_constant_pool(CHECK_(nullHandle));
|
|
|
2428 int cp_size = cp->length();
|
|
|
2429
|
|
|
2430 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len
|
|
|
2431
|
|
|
2432 // Access flags
|
|
|
2433 AccessFlags access_flags;
|
|
|
2434 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS;
|
|
|
2435
|
|
|
2436 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) {
|
|
|
2437 // Set abstract bit for old class files for backward compatibility
|
|
|
2438 flags |= JVM_ACC_ABSTRACT;
|
|
|
2439 }
|
|
|
2440 verify_legal_class_modifiers(flags, CHECK_(nullHandle));
|
|
|
2441 access_flags.set_flags(flags);
|
|
|
2442
|
|
|
2443 // This class and superclass
|
|
|
2444 instanceKlassHandle super_klass;
|
|
|
2445 u2 this_class_index = cfs->get_u2_fast();
|
|
|
2446 check_property(
|
|
|
2447 valid_cp_range(this_class_index, cp_size) &&
|
|
|
2448 cp->tag_at(this_class_index).is_unresolved_klass(),
|
|
|
2449 "Invalid this class index %u in constant pool in class file %s",
|
|
|
2450 this_class_index, CHECK_(nullHandle));
|
|
|
2451
|
|
|
2452 symbolHandle class_name (THREAD, cp->unresolved_klass_at(this_class_index));
|
|
|
2453 assert(class_name.not_null(), "class_name can't be null");
|
|
|
2454
|
|
|
2455 // It's important to set parsed_name *before* resolving the super class.
|
|
|
2456 // (it's used for cleanup by the caller if parsing fails)
|
|
|
2457 parsed_name = class_name;
|
|
|
2458
|
|
|
2459 // Update _class_name which could be null previously to be class_name
|
|
|
2460 _class_name = class_name;
|
|
|
2461
|
|
|
2462 // Don't need to check whether this class name is legal or not.
|
|
|
2463 // It has been checked when constant pool is parsed.
|
|
|
2464 // However, make sure it is not an array type.
|
|
|
2465 if (_need_verify) {
|
|
|
2466 guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY,
|
|
|
2467 "Bad class name in class file %s",
|
|
|
2468 CHECK_(nullHandle));
|
|
|
2469 }
|
|
|
2470
|
|
|
2471 klassOop preserve_this_klass; // for storing result across HandleMark
|
|
|
2472
|
|
|
2473 // release all handles when parsing is done
|
|
|
2474 { HandleMark hm(THREAD);
|
|
|
2475
|
|
|
2476 // Checks if name in class file matches requested name
|
|
|
2477 if (name.not_null() && class_name() != name()) {
|
|
|
2478 ResourceMark rm(THREAD);
|
|
|
2479 Exceptions::fthrow(
|
|
|
2480 THREAD_AND_LOCATION,
|
|
|
2481 vmSymbolHandles::java_lang_NoClassDefFoundError(),
|
|
|
2482 "%s (wrong name: %s)",
|
|
|
2483 name->as_C_string(),
|
|
|
2484 class_name->as_C_string()
|
|
|
2485 );
|
|
|
2486 return nullHandle;
|
|
|
2487 }
|
|
|
2488
|
|
|
2489 if (TraceClassLoadingPreorder) {
|
|
|
2490 tty->print("[Loading %s", name()->as_klass_external_name());
|
|
|
2491 if (cfs->source() != NULL) tty->print(" from %s", cfs->source());
|
|
|
2492 tty->print_cr("]");
|
|
|
2493 }
|
|
|
2494
|
|
|
2495 u2 super_class_index = cfs->get_u2_fast();
|
|
|
2496 if (super_class_index == 0) {
|
|
|
2497 check_property(class_name() == vmSymbols::java_lang_Object(),
|
|
|
2498 "Invalid superclass index %u in class file %s",
|
|
|
2499 super_class_index,
|
|
|
2500 CHECK_(nullHandle));
|
|
|
2501 } else {
|
|
|
2502 check_property(valid_cp_range(super_class_index, cp_size) &&
|
|
|
2503 cp->tag_at(super_class_index).is_unresolved_klass(),
|
|
|
2504 "Invalid superclass index %u in class file %s",
|
|
|
2505 super_class_index,
|
|
|
2506 CHECK_(nullHandle));
|
|
|
2507 // The class name should be legal because it is checked when parsing constant pool.
|
|
|
2508 // However, make sure it is not an array type.
|
|
|
2509 if (_need_verify) {
|
|
|
2510 guarantee_property(cp->unresolved_klass_at(super_class_index)->byte_at(0) != JVM_SIGNATURE_ARRAY,
|
|
|
2511 "Bad superclass name in class file %s", CHECK_(nullHandle));
|
|
|
2512 }
|
|
|
2513 }
|
|
|
2514
|
|
|
2515 // Interfaces
|
|
|
2516 u2 itfs_len = cfs->get_u2_fast();
|
|
|
2517 objArrayHandle local_interfaces;
|
|
|
2518 if (itfs_len == 0) {
|
|
|
2519 local_interfaces = objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
|
|
|
2520 } else {
|
|
|
2521 local_interfaces = parse_interfaces(cp, itfs_len, class_loader, protection_domain, &vmtimer, _class_name, CHECK_(nullHandle));
|
|
|
2522 }
|
|
|
2523
|
|
|
2524 // Fields (offsets are filled in later)
|
|
|
2525 struct FieldAllocationCount fac = {0,0,0,0,0,0,0,0,0,0};
|
|
|
2526 objArrayHandle fields_annotations;
|
|
|
2527 typeArrayHandle fields = parse_fields(cp, access_flags.is_interface(), &fac, &fields_annotations, CHECK_(nullHandle));
|
|
|
2528 // Methods
|
|
|
2529 bool has_final_method = false;
|
|
|
2530 AccessFlags promoted_flags;
|
|
|
2531 promoted_flags.set_flags(0);
|
|
|
2532 // These need to be oop pointers because they are allocated lazily
|
|
|
2533 // inside parse_methods inside a nested HandleMark
|
|
|
2534 objArrayOop methods_annotations_oop = NULL;
|
|
|
2535 objArrayOop methods_parameter_annotations_oop = NULL;
|
|
|
2536 objArrayOop methods_default_annotations_oop = NULL;
|
|
|
2537 objArrayHandle methods = parse_methods(cp, access_flags.is_interface(),
|
|
|
2538 &promoted_flags,
|
|
|
2539 &has_final_method,
|
|
|
2540 &methods_annotations_oop,
|
|
|
2541 &methods_parameter_annotations_oop,
|
|
|
2542 &methods_default_annotations_oop,
|
|
|
2543 CHECK_(nullHandle));
|
|
|
2544
|
|
|
2545 objArrayHandle methods_annotations(THREAD, methods_annotations_oop);
|
|
|
2546 objArrayHandle methods_parameter_annotations(THREAD, methods_parameter_annotations_oop);
|
|
|
2547 objArrayHandle methods_default_annotations(THREAD, methods_default_annotations_oop);
|
|
|
2548
|
|
|
2549 // We check super class after class file is parsed and format is checked
|
|
|
2550 if (super_class_index > 0) {
|
|
|
2551 symbolHandle sk (THREAD, cp->klass_name_at(super_class_index));
|
|
|
2552 if (access_flags.is_interface()) {
|
|
|
2553 // Before attempting to resolve the superclass, check for class format
|
|
|
2554 // errors not checked yet.
|
|
|
2555 guarantee_property(sk() == vmSymbols::java_lang_Object(),
|
|
|
2556 "Interfaces must have java.lang.Object as superclass in class file %s",
|
|
|
2557 CHECK_(nullHandle));
|
|
|
2558 }
|
|
|
2559 klassOop k = SystemDictionary::resolve_super_or_fail(class_name,
|
|
|
2560 sk,
|
|
|
2561 class_loader,
|
|
|
2562 protection_domain,
|
|
|
2563 true,
|
|
|
2564 CHECK_(nullHandle));
|
|
|
2565 KlassHandle kh (THREAD, k);
|
|
|
2566 super_klass = instanceKlassHandle(THREAD, kh());
|
|
|
2567 if (super_klass->is_interface()) {
|
|
|
2568 ResourceMark rm(THREAD);
|
|
|
2569 Exceptions::fthrow(
|
|
|
2570 THREAD_AND_LOCATION,
|
|
|
2571 vmSymbolHandles::java_lang_IncompatibleClassChangeError(),
|
|
|
2572 "class %s has interface %s as super class",
|
|
|
2573 class_name->as_klass_external_name(),
|
|
|
2574 super_klass->external_name()
|
|
|
2575 );
|
|
|
2576 return nullHandle;
|
|
|
2577 }
|
|
|
2578 // Make sure super class is not final
|
|
|
2579 if (super_klass->is_final()) {
|
|
|
2580 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle);
|
|
|
2581 }
|
|
|
2582 }
|
|
|
2583
|
|
|
2584 // Compute the transitive list of all unique interfaces implemented by this class
|
|
|
2585 objArrayHandle transitive_interfaces = compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle));
|
|
|
2586
|
|
|
2587 // sort methods
|
|
|
2588 typeArrayHandle method_ordering = sort_methods(methods,
|
|
|
2589 methods_annotations,
|
|
|
2590 methods_parameter_annotations,
|
|
|
2591 methods_default_annotations,
|
|
|
2592 CHECK_(nullHandle));
|
|
|
2593
|
|
|
2594 // promote flags from parse_methods() to the klass' flags
|
|
|
2595 access_flags.add_promoted_flags(promoted_flags.as_int());
|
|
|
2596
|
|
|
2597 // Size of Java vtable (in words)
|
|
|
2598 int vtable_size = 0;
|
|
|
2599 int itable_size = 0;
|
|
|
2600 int num_miranda_methods = 0;
|
|
|
2601
|
|
|
2602 klassVtable::compute_vtable_size_and_num_mirandas(vtable_size,
|
|
|
2603 num_miranda_methods,
|
|
|
2604 super_klass(),
|
|
|
2605 methods(),
|
|
|
2606 access_flags,
|
|
|
2607 class_loader(),
|
|
|
2608 class_name(),
|
|
|
2609 local_interfaces());
|
|
|
2610
|
|
|
2611 // Size of Java itable (in words)
|
|
|
2612 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces);
|
|
|
2613
|
|
|
2614 // Field size and offset computation
|
|
|
2615 int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size();
|
|
|
2616 #ifndef PRODUCT
|
|
|
2617 int orig_nonstatic_field_size = 0;
|
|
|
2618 #endif
|
|
|
2619 int static_field_size = 0;
|
|
|
2620 int next_static_oop_offset;
|
|
|
2621 int next_static_double_offset;
|
|
|
2622 int next_static_word_offset;
|
|
|
2623 int next_static_short_offset;
|
|
|
2624 int next_static_byte_offset;
|
|
|
2625 int next_static_type_offset;
|
|
|
2626 int next_nonstatic_oop_offset;
|
|
|
2627 int next_nonstatic_double_offset;
|
|
|
2628 int next_nonstatic_word_offset;
|
|
|
2629 int next_nonstatic_short_offset;
|
|
|
2630 int next_nonstatic_byte_offset;
|
|
|
2631 int next_nonstatic_type_offset;
|
|
|
2632 int first_nonstatic_oop_offset;
|
|
|
2633 int first_nonstatic_field_offset;
|
|
|
2634 int next_nonstatic_field_offset;
|
|
|
2635
|
|
|
2636 // Calculate the starting byte offsets
|
|
|
2637 next_static_oop_offset = (instanceKlass::header_size() +
|
|
|
2638 align_object_offset(vtable_size) +
|
|
|
2639 align_object_offset(itable_size)) * wordSize;
|
|
|
2640 next_static_double_offset = next_static_oop_offset +
|
|
|
2641 (fac.static_oop_count * oopSize);
|
|
|
2642 if ( fac.static_double_count &&
|
|
|
2643 (Universe::field_type_should_be_aligned(T_DOUBLE) ||
|
|
|
2644 Universe::field_type_should_be_aligned(T_LONG)) ) {
|
|
|
2645 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong);
|
|
|
2646 }
|
|
|
2647
|
|
|
2648 next_static_word_offset = next_static_double_offset +
|
|
|
2649 (fac.static_double_count * BytesPerLong);
|
|
|
2650 next_static_short_offset = next_static_word_offset +
|
|
|
2651 (fac.static_word_count * BytesPerInt);
|
|
|
2652 next_static_byte_offset = next_static_short_offset +
|
|
|
2653 (fac.static_short_count * BytesPerShort);
|
|
|
2654 next_static_type_offset = align_size_up((next_static_byte_offset +
|
|
|
2655 fac.static_byte_count ), wordSize );
|
|
|
2656 static_field_size = (next_static_type_offset -
|
|
|
2657 next_static_oop_offset) / wordSize;
|
|
|
2658 first_nonstatic_field_offset = (instanceOopDesc::header_size() +
|
|
|
2659 nonstatic_field_size) * wordSize;
|
|
|
2660 next_nonstatic_field_offset = first_nonstatic_field_offset;
|
|
|
2661
|
|
|
2662 // Add fake fields for java.lang.Class instances (also see below)
|
|
|
2663 if (class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) {
|
|
|
2664 java_lang_Class_fix_pre(&methods, &fac, CHECK_(nullHandle));
|
|
|
2665 }
|
|
|
2666
|
|
|
2667 // Add a fake "discovered" field if it is not present
|
|
|
2668 // for compatibility with earlier jdk's.
|
|
|
2669 if (class_name() == vmSymbols::java_lang_ref_Reference()
|
|
|
2670 && class_loader.is_null()) {
|
|
|
2671 java_lang_ref_Reference_fix_pre(&fields, cp, &fac, CHECK_(nullHandle));
|
|
|
2672 }
|
|
|
2673 // end of "discovered" field compactibility fix
|
|
|
2674
|
|
|
2675 int nonstatic_double_count = fac.nonstatic_double_count;
|
|
|
2676 int nonstatic_word_count = fac.nonstatic_word_count;
|
|
|
2677 int nonstatic_short_count = fac.nonstatic_short_count;
|
|
|
2678 int nonstatic_byte_count = fac.nonstatic_byte_count;
|
|
|
2679 int nonstatic_oop_count = fac.nonstatic_oop_count;
|
|
|
2680
|
|
|
2681 // Prepare list of oops for oop maps generation.
|
|
|
2682 u2* nonstatic_oop_offsets;
|
|
|
2683 u2* nonstatic_oop_length;
|
|
|
2684 int nonstatic_oop_map_count = 0;
|
|
|
2685
|
|
|
2686 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
2687 THREAD, u2, nonstatic_oop_count+1);
|
|
|
2688 nonstatic_oop_length = NEW_RESOURCE_ARRAY_IN_THREAD(
|
|
|
2689 THREAD, u2, nonstatic_oop_count+1);
|
|
|
2690
|
|
|
2691 // Add fake fields for java.lang.Class instances (also see above).
|
|
|
2692 // FieldsAllocationStyle and CompactFields values will be reset to default.
|
|
|
2693 if(class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) {
|
|
|
2694 java_lang_Class_fix_post(&next_nonstatic_field_offset);
|
|
|
2695 nonstatic_oop_offsets[0] = (u2)first_nonstatic_field_offset;
|
|
|
2696 int fake_oop_count = (( next_nonstatic_field_offset -
|
|
|
2697 first_nonstatic_field_offset ) / oopSize);
|
|
|
2698 nonstatic_oop_length [0] = (u2)fake_oop_count;
|
|
|
2699 nonstatic_oop_map_count = 1;
|
|
|
2700 nonstatic_oop_count -= fake_oop_count;
|
|
|
2701 first_nonstatic_oop_offset = first_nonstatic_field_offset;
|
|
|
2702 } else {
|
|
|
2703 first_nonstatic_oop_offset = 0; // will be set for first oop field
|
|
|
2704 }
|
|
|
2705
|
|
|
2706 #ifndef PRODUCT
|
|
|
2707 if( PrintCompactFieldsSavings ) {
|
|
|
2708 next_nonstatic_double_offset = next_nonstatic_field_offset +
|
|
|
2709 (nonstatic_oop_count * oopSize);
|
|
|
2710 if ( nonstatic_double_count > 0 ) {
|
|
|
2711 next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong);
|
|
|
2712 }
|
|
|
2713 next_nonstatic_word_offset = next_nonstatic_double_offset +
|
|
|
2714 (nonstatic_double_count * BytesPerLong);
|
|
|
2715 next_nonstatic_short_offset = next_nonstatic_word_offset +
|
|
|
2716 (nonstatic_word_count * BytesPerInt);
|
|
|
2717 next_nonstatic_byte_offset = next_nonstatic_short_offset +
|
|
|
2718 (nonstatic_short_count * BytesPerShort);
|
|
|
2719 next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset +
|
|
|
2720 nonstatic_byte_count ), wordSize );
|
|
|
2721 orig_nonstatic_field_size = nonstatic_field_size +
|
|
|
2722 ((next_nonstatic_type_offset - first_nonstatic_field_offset)/wordSize);
|
|
|
2723 }
|
|
|
2724 #endif
|
|
|
2725 bool compact_fields = CompactFields;
|
|
|
2726 int allocation_style = FieldsAllocationStyle;
|
|
|
2727 if( allocation_style < 0 || allocation_style > 1 ) { // Out of range?
|
|
|
2728 assert(false, "0 <= FieldsAllocationStyle <= 1");
|
|
|
2729 allocation_style = 1; // Optimistic
|
|
|
2730 }
|
|
|
2731
|
|
|
2732 // The next classes have predefined hard-coded fields offsets
|
|
|
2733 // (see in JavaClasses::compute_hard_coded_offsets()).
|
|
|
2734 // Use default fields allocation order for them.
|
|
|
2735 if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() &&
|
|
|
2736 (class_name() == vmSymbols::java_lang_AssertionStatusDirectives() ||
|
|
|
2737 class_name() == vmSymbols::java_lang_Class() ||
|
|
|
2738 class_name() == vmSymbols::java_lang_ClassLoader() ||
|
|
|
2739 class_name() == vmSymbols::java_lang_ref_Reference() ||
|
|
|
2740 class_name() == vmSymbols::java_lang_ref_SoftReference() ||
|
|
|
2741 class_name() == vmSymbols::java_lang_StackTraceElement() ||
|
|
|
2742 class_name() == vmSymbols::java_lang_String() ||
|
|
|
2743 class_name() == vmSymbols::java_lang_Throwable()) ) {
|
|
|
2744 allocation_style = 0; // Allocate oops first
|
|
|
2745 compact_fields = false; // Don't compact fields
|
|
|
2746 }
|
|
|
2747
|
|
|
2748 if( allocation_style == 0 ) {
|
|
|
2749 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes
|
|
|
2750 next_nonstatic_oop_offset = next_nonstatic_field_offset;
|
|
|
2751 next_nonstatic_double_offset = next_nonstatic_oop_offset +
|
|
|
2752 (nonstatic_oop_count * oopSize);
|
|
|
2753 } else if( allocation_style == 1 ) {
|
|
|
2754 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops
|
|
|
2755 next_nonstatic_double_offset = next_nonstatic_field_offset;
|
|
|
2756 } else {
|
|
|
2757 ShouldNotReachHere();
|
|
|
2758 }
|
|
|
2759
|
|
|
2760 int nonstatic_oop_space_count = 0;
|
|
|
2761 int nonstatic_word_space_count = 0;
|
|
|
2762 int nonstatic_short_space_count = 0;
|
|
|
2763 int nonstatic_byte_space_count = 0;
|
|
|
2764 int nonstatic_oop_space_offset;
|
|
|
2765 int nonstatic_word_space_offset;
|
|
|
2766 int nonstatic_short_space_offset;
|
|
|
2767 int nonstatic_byte_space_offset;
|
|
|
2768
|
|
|
2769 if( nonstatic_double_count > 0 ) {
|
|
|
2770 int offset = next_nonstatic_double_offset;
|
|
|
2771 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong);
|
|
|
2772 if( compact_fields && offset != next_nonstatic_double_offset ) {
|
|
|
2773 // Allocate available fields into the gap before double field.
|
|
|
2774 int length = next_nonstatic_double_offset - offset;
|
|
|
2775 assert(length == BytesPerInt, "");
|
|
|
2776 nonstatic_word_space_offset = offset;
|
|
|
2777 if( nonstatic_word_count > 0 ) {
|
|
|
2778 nonstatic_word_count -= 1;
|
|
|
2779 nonstatic_word_space_count = 1; // Only one will fit
|
|
|
2780 length -= BytesPerInt;
|
|
|
2781 offset += BytesPerInt;
|
|
|
2782 }
|
|
|
2783 nonstatic_short_space_offset = offset;
|
|
|
2784 while( length >= BytesPerShort && nonstatic_short_count > 0 ) {
|
|
|
2785 nonstatic_short_count -= 1;
|
|
|
2786 nonstatic_short_space_count += 1;
|
|
|
2787 length -= BytesPerShort;
|
|
|
2788 offset += BytesPerShort;
|
|
|
2789 }
|
|
|
2790 nonstatic_byte_space_offset = offset;
|
|
|
2791 while( length > 0 && nonstatic_byte_count > 0 ) {
|
|
|
2792 nonstatic_byte_count -= 1;
|
|
|
2793 nonstatic_byte_space_count += 1;
|
|
|
2794 length -= 1;
|
|
|
2795 }
|
|
|
2796 // Allocate oop field in the gap if there are no other fields for that.
|
|
|
2797 nonstatic_oop_space_offset = offset;
|
|
|
2798 if( length >= oopSize && nonstatic_oop_count > 0 &&
|
|
|
2799 allocation_style != 0 ) { // when oop fields not first
|
|
|
2800 nonstatic_oop_count -= 1;
|
|
|
2801 nonstatic_oop_space_count = 1; // Only one will fit
|
|
|
2802 length -= oopSize;
|
|
|
2803 offset += oopSize;
|
|
|
2804 }
|
|
|
2805 }
|
|
|
2806 }
|
|
|
2807
|
|
|
2808 next_nonstatic_word_offset = next_nonstatic_double_offset +
|
|
|
2809 (nonstatic_double_count * BytesPerLong);
|
|
|
2810 next_nonstatic_short_offset = next_nonstatic_word_offset +
|
|
|
2811 (nonstatic_word_count * BytesPerInt);
|
|
|
2812 next_nonstatic_byte_offset = next_nonstatic_short_offset +
|
|
|
2813 (nonstatic_short_count * BytesPerShort);
|
|
|
2814
|
|
|
2815 int notaligned_offset;
|
|
|
2816 if( allocation_style == 0 ) {
|
|
|
2817 notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count;
|
|
|
2818 } else { // allocation_style == 1
|
|
|
2819 next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count;
|
|
|
2820 if( nonstatic_oop_count > 0 ) {
|
|
|
2821 notaligned_offset = next_nonstatic_oop_offset;
|
|
|
2822 next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, oopSize);
|
|
|
2823 }
|
|
|
2824 notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * oopSize);
|
|
|
2825 }
|
|
|
2826 next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize );
|
|
|
2827 nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset
|
|
|
2828 - first_nonstatic_field_offset)/wordSize);
|
|
|
2829
|
|
|
2830 // Iterate over fields again and compute correct offsets.
|
|
|
2831 // The field allocation type was temporarily stored in the offset slot.
|
|
|
2832 // oop fields are located before non-oop fields (static and non-static).
|
|
|
2833 int len = fields->length();
|
|
|
2834 for (int i = 0; i < len; i += instanceKlass::next_offset) {
|
|
|
2835 int real_offset;
|
|
|
2836 FieldAllocationType atype = (FieldAllocationType) fields->ushort_at(i+4);
|
|
|
2837 switch (atype) {
|
|
|
2838 case STATIC_OOP:
|
|
|
2839 real_offset = next_static_oop_offset;
|
|
|
2840 next_static_oop_offset += oopSize;
|
|
|
2841 break;
|
|
|
2842 case STATIC_BYTE:
|
|
|
2843 real_offset = next_static_byte_offset;
|
|
|
2844 next_static_byte_offset += 1;
|
|
|
2845 break;
|
|
|
2846 case STATIC_SHORT:
|
|
|
2847 real_offset = next_static_short_offset;
|
|
|
2848 next_static_short_offset += BytesPerShort;
|
|
|
2849 break;
|
|
|
2850 case STATIC_WORD:
|
|
|
2851 real_offset = next_static_word_offset;
|
|
|
2852 next_static_word_offset += BytesPerInt;
|
|
|
2853 break;
|
|
|
2854 case STATIC_ALIGNED_DOUBLE:
|
|
|
2855 case STATIC_DOUBLE:
|
|
|
2856 real_offset = next_static_double_offset;
|
|
|
2857 next_static_double_offset += BytesPerLong;
|
|
|
2858 break;
|
|
|
2859 case NONSTATIC_OOP:
|
|
|
2860 if( nonstatic_oop_space_count > 0 ) {
|
|
|
2861 real_offset = nonstatic_oop_space_offset;
|
|
|
2862 nonstatic_oop_space_offset += oopSize;
|
|
|
2863 nonstatic_oop_space_count -= 1;
|
|
|
2864 } else {
|
|
|
2865 real_offset = next_nonstatic_oop_offset;
|
|
|
2866 next_nonstatic_oop_offset += oopSize;
|
|
|
2867 }
|
|
|
2868 // Update oop maps
|
|
|
2869 if( nonstatic_oop_map_count > 0 &&
|
|
|
2870 nonstatic_oop_offsets[nonstatic_oop_map_count - 1] ==
|
|
|
2871 (u2)(real_offset - nonstatic_oop_length[nonstatic_oop_map_count - 1] * oopSize) ) {
|
|
|
2872 // Extend current oop map
|
|
|
2873 nonstatic_oop_length[nonstatic_oop_map_count - 1] += 1;
|
|
|
2874 } else {
|
|
|
2875 // Create new oop map
|
|
|
2876 nonstatic_oop_offsets[nonstatic_oop_map_count] = (u2)real_offset;
|
|
|
2877 nonstatic_oop_length [nonstatic_oop_map_count] = 1;
|
|
|
2878 nonstatic_oop_map_count += 1;
|
|
|
2879 if( first_nonstatic_oop_offset == 0 ) { // Undefined
|
|
|
2880 first_nonstatic_oop_offset = real_offset;
|
|
|
2881 }
|
|
|
2882 }
|
|
|
2883 break;
|
|
|
2884 case NONSTATIC_BYTE:
|
|
|
2885 if( nonstatic_byte_space_count > 0 ) {
|
|
|
2886 real_offset = nonstatic_byte_space_offset;
|
|
|
2887 nonstatic_byte_space_offset += 1;
|
|
|
2888 nonstatic_byte_space_count -= 1;
|
|
|
2889 } else {
|
|
|
2890 real_offset = next_nonstatic_byte_offset;
|
|
|
2891 next_nonstatic_byte_offset += 1;
|
|
|
2892 }
|
|
|
2893 break;
|
|
|
2894 case NONSTATIC_SHORT:
|
|
|
2895 if( nonstatic_short_space_count > 0 ) {
|
|
|
2896 real_offset = nonstatic_short_space_offset;
|
|
|
2897 nonstatic_short_space_offset += BytesPerShort;
|
|
|
2898 nonstatic_short_space_count -= 1;
|
|
|
2899 } else {
|
|
|
2900 real_offset = next_nonstatic_short_offset;
|
|
|
2901 next_nonstatic_short_offset += BytesPerShort;
|
|
|
2902 }
|
|
|
2903 break;
|
|
|
2904 case NONSTATIC_WORD:
|
|
|
2905 if( nonstatic_word_space_count > 0 ) {
|
|
|
2906 real_offset = nonstatic_word_space_offset;
|
|
|
2907 nonstatic_word_space_offset += BytesPerInt;
|
|
|
2908 nonstatic_word_space_count -= 1;
|
|
|
2909 } else {
|
|
|
2910 real_offset = next_nonstatic_word_offset;
|
|
|
2911 next_nonstatic_word_offset += BytesPerInt;
|
|
|
2912 }
|
|
|
2913 break;
|
|
|
2914 case NONSTATIC_ALIGNED_DOUBLE:
|
|
|
2915 case NONSTATIC_DOUBLE:
|
|
|
2916 real_offset = next_nonstatic_double_offset;
|
|
|
2917 next_nonstatic_double_offset += BytesPerLong;
|
|
|
2918 break;
|
|
|
2919 default:
|
|
|
2920 ShouldNotReachHere();
|
|
|
2921 }
|
|
|
2922 fields->short_at_put(i+4, extract_low_short_from_int(real_offset) );
|
|
|
2923 fields->short_at_put(i+5, extract_high_short_from_int(real_offset) );
|
|
|
2924 }
|
|
|
2925
|
|
|
2926 // Size of instances
|
|
|
2927 int instance_size;
|
|
|
2928
|
|
|
2929 instance_size = align_object_size(next_nonstatic_type_offset / wordSize);
|
|
|
2930
|
|
|
2931 assert(instance_size == align_object_size(instanceOopDesc::header_size() + nonstatic_field_size), "consistent layout helper value");
|
|
|
2932
|
|
|
2933 // Size of non-static oop map blocks (in words) allocated at end of klass
|
|
|
2934 int nonstatic_oop_map_size = compute_oop_map_size(super_klass, nonstatic_oop_map_count, first_nonstatic_oop_offset);
|
|
|
2935
|
|
|
2936 // Compute reference type
|
|
|
2937 ReferenceType rt;
|
|
|
2938 if (super_klass() == NULL) {
|
|
|
2939 rt = REF_NONE;
|
|
|
2940 } else {
|
|
|
2941 rt = super_klass->reference_type();
|
|
|
2942 }
|
|
|
2943
|
|
|
2944 // We can now create the basic klassOop for this klass
|
|
|
2945 klassOop ik = oopFactory::new_instanceKlass(
|
|
|
2946 vtable_size, itable_size,
|
|
|
2947 static_field_size, nonstatic_oop_map_size,
|
|
|
2948 rt, CHECK_(nullHandle));
|
|
|
2949 instanceKlassHandle this_klass (THREAD, ik);
|
|
|
2950
|
|
|
2951 assert(this_klass->static_field_size() == static_field_size &&
|
|
|
2952 this_klass->nonstatic_oop_map_size() == nonstatic_oop_map_size, "sanity check");
|
|
|
2953
|
|
|
2954 // Fill in information already parsed
|
|
|
2955 this_klass->set_access_flags(access_flags);
|
|
|
2956 jint lh = Klass::instance_layout_helper(instance_size, false);
|
|
|
2957 this_klass->set_layout_helper(lh);
|
|
|
2958 assert(this_klass->oop_is_instance(), "layout is correct");
|
|
|
2959 assert(this_klass->size_helper() == instance_size, "correct size_helper");
|
|
|
2960 // Not yet: supers are done below to support the new subtype-checking fields
|
|
|
2961 //this_klass->set_super(super_klass());
|
|
|
2962 this_klass->set_class_loader(class_loader());
|
|
|
2963 this_klass->set_nonstatic_field_size(nonstatic_field_size);
|
|
|
2964 this_klass->set_static_oop_field_size(fac.static_oop_count);
|
|
|
2965 cp->set_pool_holder(this_klass());
|
|
|
2966 this_klass->set_constants(cp());
|
|
|
2967 this_klass->set_local_interfaces(local_interfaces());
|
|
|
2968 this_klass->set_fields(fields());
|
|
|
2969 this_klass->set_methods(methods());
|
|
|
2970 if (has_final_method) {
|
|
|
2971 this_klass->set_has_final_method();
|
|
|
2972 }
|
|
|
2973 this_klass->set_method_ordering(method_ordering());
|
|
|
2974 this_klass->set_initial_method_idnum(methods->length());
|
|
|
2975 this_klass->set_name(cp->klass_name_at(this_class_index));
|
|
|
2976 this_klass->set_protection_domain(protection_domain());
|
|
|
2977 this_klass->set_fields_annotations(fields_annotations());
|
|
|
2978 this_klass->set_methods_annotations(methods_annotations());
|
|
|
2979 this_klass->set_methods_parameter_annotations(methods_parameter_annotations());
|
|
|
2980 this_klass->set_methods_default_annotations(methods_default_annotations());
|
|
|
2981
|
|
|
2982 this_klass->set_minor_version(minor_version);
|
|
|
2983 this_klass->set_major_version(major_version);
|
|
|
2984
|
|
|
2985 if (cached_class_file_bytes != NULL) {
|
|
|
2986 // JVMTI: we have an instanceKlass now, tell it about the cached bytes
|
|
|
2987 this_klass->set_cached_class_file(cached_class_file_bytes,
|
|
|
2988 cached_class_file_length);
|
|
|
2989 }
|
|
|
2990
|
|
|
2991 // Miranda methods
|
|
|
2992 if ((num_miranda_methods > 0) ||
|
|
|
2993 // if this class introduced new miranda methods or
|
|
|
2994 (super_klass.not_null() && (super_klass->has_miranda_methods()))
|
|
|
2995 // super class exists and this class inherited miranda methods
|
|
|
2996 ) {
|
|
|
2997 this_klass->set_has_miranda_methods(); // then set a flag
|
|
|
2998 }
|
|
|
2999
|
|
|
3000 // Additional attributes
|
|
|
3001 parse_classfile_attributes(cp, this_klass, CHECK_(nullHandle));
|
|
|
3002
|
|
|
3003 // Make sure this is the end of class file stream
|
|
|
3004 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle));
|
|
|
3005
|
|
|
3006 // Initialize static fields
|
|
|
3007 this_klass->do_local_static_fields(&initialize_static_field, CHECK_(nullHandle));
|
|
|
3008
|
|
|
3009 // VerifyOops believes that once this has been set, the object is completely loaded.
|
|
|
3010 // Compute transitive closure of interfaces this class implements
|
|
|
3011 this_klass->set_transitive_interfaces(transitive_interfaces());
|
|
|
3012
|
|
|
3013 // Fill in information needed to compute superclasses.
|
|
|
3014 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle));
|
|
|
3015
|
|
|
3016 // Initialize itable offset tables
|
|
|
3017 klassItable::setup_itable_offset_table(this_klass);
|
|
|
3018
|
|
|
3019 // Do final class setup
|
|
|
3020 fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_length);
|
|
|
3021
|
|
|
3022 set_precomputed_flags(this_klass);
|
|
|
3023
|
|
|
3024 // reinitialize modifiers, using the InnerClasses attribute
|
|
|
3025 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle));
|
|
|
3026 this_klass->set_modifier_flags(computed_modifiers);
|
|
|
3027
|
|
|
3028 // check if this class can access its super class
|
|
|
3029 check_super_class_access(this_klass, CHECK_(nullHandle));
|
|
|
3030
|
|
|
3031 // check if this class can access its superinterfaces
|
|
|
3032 check_super_interface_access(this_klass, CHECK_(nullHandle));
|
|
|
3033
|
|
|
3034 // check if this class overrides any final method
|
|
|
3035 check_final_method_override(this_klass, CHECK_(nullHandle));
|
|
|
3036
|
|
|
3037 // check that if this class is an interface then it doesn't have static methods
|
|
|
3038 if (this_klass->is_interface()) {
|
|
|
3039 check_illegal_static_method(this_klass, CHECK_(nullHandle));
|
|
|
3040 }
|
|
|
3041
|
|
|
3042 ClassLoadingService::notify_class_loaded(instanceKlass::cast(this_klass()),
|
|
|
3043 false /* not shared class */);
|
|
|
3044
|
|
|
3045 if (TraceClassLoading) {
|
|
|
3046 // print in a single call to reduce interleaving of output
|
|
|
3047 if (cfs->source() != NULL) {
|
|
|
3048 tty->print("[Loaded %s from %s]\n", this_klass->external_name(),
|
|
|
3049 cfs->source());
|
|
|
3050 } else if (class_loader.is_null()) {
|
|
|
3051 if (THREAD->is_Java_thread()) {
|
|
|
3052 klassOop caller = ((JavaThread*)THREAD)->security_get_caller_class(1);
|
|
|
3053 tty->print("[Loaded %s by instance of %s]\n",
|
|
|
3054 this_klass->external_name(),
|
|
|
3055 instanceKlass::cast(caller)->external_name());
|
|
|
3056 } else {
|
|
|
3057 tty->print("[Loaded %s]\n", this_klass->external_name());
|
|
|
3058 }
|
|
|
3059 } else {
|
|
|
3060 ResourceMark rm;
|
|
|
3061 tty->print("[Loaded %s from %s]\n", this_klass->external_name(),
|
|
|
3062 instanceKlass::cast(class_loader->klass())->external_name());
|
|
|
3063 }
|
|
|
3064 }
|
|
|
3065
|
|
|
3066 if (TraceClassResolution) {
|
|
|
3067 // print out the superclass.
|
|
|
3068 const char * from = Klass::cast(this_klass())->external_name();
|
|
|
3069 if (this_klass->java_super() != NULL) {
|
|
|
3070 tty->print("RESOLVE %s %s\n", from, instanceKlass::cast(this_klass->java_super())->external_name());
|
|
|
3071 }
|
|
|
3072 // print out each of the interface classes referred to by this class.
|
|
|
3073 objArrayHandle local_interfaces(THREAD, this_klass->local_interfaces());
|
|
|
3074 if (!local_interfaces.is_null()) {
|
|
|
3075 int length = local_interfaces->length();
|
|
|
3076 for (int i = 0; i < length; i++) {
|
|
|
3077 klassOop k = klassOop(local_interfaces->obj_at(i));
|
|
|
3078 instanceKlass* to_class = instanceKlass::cast(k);
|
|
|
3079 const char * to = to_class->external_name();
|
|
|
3080 tty->print("RESOLVE %s %s\n", from, to);
|
|
|
3081 }
|
|
|
3082 }
|
|
|
3083 }
|
|
|
3084
|
|
|
3085 #ifndef PRODUCT
|
|
|
3086 if( PrintCompactFieldsSavings ) {
|
|
|
3087 if( nonstatic_field_size < orig_nonstatic_field_size ) {
|
|
|
3088 tty->print("[Saved %d of %3d words in %s]\n",
|
|
|
3089 orig_nonstatic_field_size - nonstatic_field_size,
|
|
|
3090 orig_nonstatic_field_size, this_klass->external_name());
|
|
|
3091 } else if( nonstatic_field_size > orig_nonstatic_field_size ) {
|
|
|
3092 tty->print("[Wasted %d over %3d words in %s]\n",
|
|
|
3093 nonstatic_field_size - orig_nonstatic_field_size,
|
|
|
3094 orig_nonstatic_field_size, this_klass->external_name());
|
|
|
3095 }
|
|
|
3096 }
|
|
|
3097 #endif
|
|
|
3098
|
|
|
3099 // preserve result across HandleMark
|
|
|
3100 preserve_this_klass = this_klass();
|
|
|
3101 }
|
|
|
3102
|
|
|
3103 // Create new handle outside HandleMark
|
|
|
3104 instanceKlassHandle this_klass (THREAD, preserve_this_klass);
|
|
|
3105 debug_only(this_klass->as_klassOop()->verify();)
|
|
|
3106
|
|
|
3107 return this_klass;
|
|
|
3108 }
|
|
|
3109
|
|
|
3110
|
|
|
3111 int ClassFileParser::compute_oop_map_size(instanceKlassHandle super, int nonstatic_oop_map_count, int first_nonstatic_oop_offset) {
|
|
|
3112 int map_size = super.is_null() ? 0 : super->nonstatic_oop_map_size();
|
|
|
3113 if (nonstatic_oop_map_count > 0) {
|
|
|
3114 // We have oops to add to map
|
|
|
3115 if (map_size == 0) {
|
|
|
3116 map_size = nonstatic_oop_map_count;
|
|
|
3117 } else {
|
|
|
3118 // Check whether we should add a new map block or whether the last one can be extended
|
|
|
3119 OopMapBlock* first_map = super->start_of_nonstatic_oop_maps();
|
|
|
3120 OopMapBlock* last_map = first_map + map_size - 1;
|
|
|
3121
|
|
|
3122 int next_offset = last_map->offset() + (last_map->length() * oopSize);
|
|
|
3123 if (next_offset == first_nonstatic_oop_offset) {
|
|
|
3124 // There is no gap bettwen superklass's last oop field and first
|
|
|
3125 // local oop field, merge maps.
|
|
|
3126 nonstatic_oop_map_count -= 1;
|
|
|
3127 } else {
|
|
|
3128 // Superklass didn't end with a oop field, add extra maps
|
|
|
3129 assert(next_offset<first_nonstatic_oop_offset, "just checking");
|
|
|
3130 }
|
|
|
3131 map_size += nonstatic_oop_map_count;
|
|
|
3132 }
|
|
|
3133 }
|
|
|
3134 return map_size;
|
|
|
3135 }
|
|
|
3136
|
|
|
3137
|
|
|
3138 void ClassFileParser::fill_oop_maps(instanceKlassHandle k,
|
|
|
3139 int nonstatic_oop_map_count,
|
|
|
3140 u2* nonstatic_oop_offsets, u2* nonstatic_oop_length) {
|
|
|
3141 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps();
|
|
|
3142 OopMapBlock* last_oop_map = this_oop_map + k->nonstatic_oop_map_size();
|
|
|
3143 instanceKlass* super = k->superklass();
|
|
|
3144 if (super != NULL) {
|
|
|
3145 int super_oop_map_size = super->nonstatic_oop_map_size();
|
|
|
3146 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps();
|
|
|
3147 // Copy maps from superklass
|
|
|
3148 while (super_oop_map_size-- > 0) {
|
|
|
3149 *this_oop_map++ = *super_oop_map++;
|
|
|
3150 }
|
|
|
3151 }
|
|
|
3152 if (nonstatic_oop_map_count > 0) {
|
|
|
3153 if (this_oop_map + nonstatic_oop_map_count > last_oop_map) {
|
|
|
3154 // Calculated in compute_oop_map_size() number of oop maps is less then
|
|
|
3155 // collected oop maps since there is no gap between superklass's last oop
|
|
|
3156 // field and first local oop field. Extend the last oop map copied
|
|
|
3157 // from the superklass instead of creating new one.
|
|
|
3158 nonstatic_oop_map_count--;
|
|
|
3159 nonstatic_oop_offsets++;
|
|
|
3160 this_oop_map--;
|
|
|
3161 this_oop_map->set_length(this_oop_map->length() + *nonstatic_oop_length++);
|
|
|
3162 this_oop_map++;
|
|
|
3163 }
|
|
|
3164 assert((this_oop_map + nonstatic_oop_map_count) == last_oop_map, "just checking");
|
|
|
3165 // Add new map blocks, fill them
|
|
|
3166 while (nonstatic_oop_map_count-- > 0) {
|
|
|
3167 this_oop_map->set_offset(*nonstatic_oop_offsets++);
|
|
|
3168 this_oop_map->set_length(*nonstatic_oop_length++);
|
|
|
3169 this_oop_map++;
|
|
|
3170 }
|
|
|
3171 }
|
|
|
3172 }
|
|
|
3173
|
|
|
3174
|
|
|
3175 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) {
|
|
|
3176 klassOop super = k->super();
|
|
|
3177
|
|
|
3178 // Check if this klass has an empty finalize method (i.e. one with return bytecode only),
|
|
|
3179 // in which case we don't have to register objects as finalizable
|
|
|
3180 if (!_has_empty_finalizer) {
|
|
|
3181 if (_has_finalizer ||
|
|
|
3182 (super != NULL && super->klass_part()->has_finalizer())) {
|
|
|
3183 k->set_has_finalizer();
|
|
|
3184 }
|
|
|
3185 }
|
|
|
3186
|
|
|
3187 #ifdef ASSERT
|
|
|
3188 bool f = false;
|
|
|
3189 methodOop m = k->lookup_method(vmSymbols::finalize_method_name(),
|
|
|
3190 vmSymbols::void_method_signature());
|
|
|
3191 if (m != NULL && !m->is_empty_method()) {
|
|
|
3192 f = true;
|
|
|
3193 }
|
|
|
3194 assert(f == k->has_finalizer(), "inconsistent has_finalizer");
|
|
|
3195 #endif
|
|
|
3196
|
|
|
3197 // Check if this klass supports the java.lang.Cloneable interface
|
|
|
3198 if (SystemDictionary::cloneable_klass_loaded()) {
|
|
|
3199 if (k->is_subtype_of(SystemDictionary::cloneable_klass())) {
|
|
|
3200 k->set_is_cloneable();
|
|
|
3201 }
|
|
|
3202 }
|
|
|
3203
|
|
|
3204 // Check if this klass has a vanilla default constructor
|
|
|
3205 if (super == NULL) {
|
|
|
3206 // java.lang.Object has empty default constructor
|
|
|
3207 k->set_has_vanilla_constructor();
|
|
|
3208 } else {
|
|
|
3209 if (Klass::cast(super)->has_vanilla_constructor() &&
|
|
|
3210 _has_vanilla_constructor) {
|
|
|
3211 k->set_has_vanilla_constructor();
|
|
|
3212 }
|
|
|
3213 #ifdef ASSERT
|
|
|
3214 bool v = false;
|
|
|
3215 if (Klass::cast(super)->has_vanilla_constructor()) {
|
|
|
3216 methodOop constructor = k->find_method(vmSymbols::object_initializer_name(
|
|
|
3217 ), vmSymbols::void_method_signature());
|
|
|
3218 if (constructor != NULL && constructor->is_vanilla_constructor()) {
|
|
|
3219 v = true;
|
|
|
3220 }
|
|
|
3221 }
|
|
|
3222 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor");
|
|
|
3223 #endif
|
|
|
3224 }
|
|
|
3225
|
|
|
3226 // If it cannot be fast-path allocated, set a bit in the layout helper.
|
|
|
3227 // See documentation of instanceKlass::can_be_fastpath_allocated().
|
|
|
3228 assert(k->size_helper() > 0, "layout_helper is initialized");
|
|
|
3229 if ((!RegisterFinalizersAtInit && k->has_finalizer())
|
|
|
3230 || k->is_abstract() || k->is_interface()
|
|
|
3231 || (k->name() == vmSymbols::java_lang_Class()
|
|
|
3232 && k->class_loader() == NULL)
|
|
|
3233 || k->size_helper() >= FastAllocateSizeLimit) {
|
|
|
3234 // Forbid fast-path allocation.
|
|
|
3235 jint lh = Klass::instance_layout_helper(k->size_helper(), true);
|
|
|
3236 k->set_layout_helper(lh);
|
|
|
3237 }
|
|
|
3238 }
|
|
|
3239
|
|
|
3240
|
|
|
3241 // utility method for appending and array with check for duplicates
|
|
|
3242
|
|
|
3243 void append_interfaces(objArrayHandle result, int& index, objArrayOop ifs) {
|
|
|
3244 // iterate over new interfaces
|
|
|
3245 for (int i = 0; i < ifs->length(); i++) {
|
|
|
3246 oop e = ifs->obj_at(i);
|
|
|
3247 assert(e->is_klass() && instanceKlass::cast(klassOop(e))->is_interface(), "just checking");
|
|
|
3248 // check for duplicates
|
|
|
3249 bool duplicate = false;
|
|
|
3250 for (int j = 0; j < index; j++) {
|
|
|
3251 if (result->obj_at(j) == e) {
|
|
|
3252 duplicate = true;
|
|
|
3253 break;
|
|
|
3254 }
|
|
|
3255 }
|
|
|
3256 // add new interface
|
|
|
3257 if (!duplicate) {
|
|
|
3258 result->obj_at_put(index++, e);
|
|
|
3259 }
|
|
|
3260 }
|
|
|
3261 }
|
|
|
3262
|
|
|
3263 objArrayHandle ClassFileParser::compute_transitive_interfaces(instanceKlassHandle super, objArrayHandle local_ifs, TRAPS) {
|
|
|
3264 // Compute maximum size for transitive interfaces
|
|
|
3265 int max_transitive_size = 0;
|
|
|
3266 int super_size = 0;
|
|
|
3267 // Add superclass transitive interfaces size
|
|
|
3268 if (super.not_null()) {
|
|
|
3269 super_size = super->transitive_interfaces()->length();
|
|
|
3270 max_transitive_size += super_size;
|
|
|
3271 }
|
|
|
3272 // Add local interfaces' super interfaces
|
|
|
3273 int local_size = local_ifs->length();
|
|
|
3274 for (int i = 0; i < local_size; i++) {
|
|
|
3275 klassOop l = klassOop(local_ifs->obj_at(i));
|
|
|
3276 max_transitive_size += instanceKlass::cast(l)->transitive_interfaces()->length();
|
|
|
3277 }
|
|
|
3278 // Finally add local interfaces
|
|
|
3279 max_transitive_size += local_size;
|
|
|
3280 // Construct array
|
|
|
3281 objArrayHandle result;
|
|
|
3282 if (max_transitive_size == 0) {
|
|
|
3283 // no interfaces, use canonicalized array
|
|
|
3284 result = objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
|
|
|
3285 } else if (max_transitive_size == super_size) {
|
|
|
3286 // no new local interfaces added, share superklass' transitive interface array
|
|
|
3287 result = objArrayHandle(THREAD, super->transitive_interfaces());
|
|
|
3288 } else if (max_transitive_size == local_size) {
|
|
|
3289 // only local interfaces added, share local interface array
|
|
|
3290 result = local_ifs;
|
|
|
3291 } else {
|
|
|
3292 objArrayHandle nullHandle;
|
|
|
3293 objArrayOop new_objarray = oopFactory::new_system_objArray(max_transitive_size, CHECK_(nullHandle));
|
|
|
3294 result = objArrayHandle(THREAD, new_objarray);
|
|
|
3295 int index = 0;
|
|
|
3296 // Copy down from superclass
|
|
|
3297 if (super.not_null()) {
|
|
|
3298 append_interfaces(result, index, super->transitive_interfaces());
|
|
|
3299 }
|
|
|
3300 // Copy down from local interfaces' superinterfaces
|
|
|
3301 for (int i = 0; i < local_ifs->length(); i++) {
|
|
|
3302 klassOop l = klassOop(local_ifs->obj_at(i));
|
|
|
3303 append_interfaces(result, index, instanceKlass::cast(l)->transitive_interfaces());
|
|
|
3304 }
|
|
|
3305 // Finally add local interfaces
|
|
|
3306 append_interfaces(result, index, local_ifs());
|
|
|
3307
|
|
|
3308 // Check if duplicates were removed
|
|
|
3309 if (index != max_transitive_size) {
|
|
|
3310 assert(index < max_transitive_size, "just checking");
|
|
|
3311 objArrayOop new_result = oopFactory::new_system_objArray(index, CHECK_(nullHandle));
|
|
|
3312 for (int i = 0; i < index; i++) {
|
|
|
3313 oop e = result->obj_at(i);
|
|
|
3314 assert(e != NULL, "just checking");
|
|
|
3315 new_result->obj_at_put(i, e);
|
|
|
3316 }
|
|
|
3317 result = objArrayHandle(THREAD, new_result);
|
|
|
3318 }
|
|
|
3319 }
|
|
|
3320 return result;
|
|
|
3321 }
|
|
|
3322
|
|
|
3323
|
|
|
3324 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) {
|
|
|
3325 klassOop super = this_klass->super();
|
|
|
3326 if ((super != NULL) &&
|
|
|
3327 (!Reflection::verify_class_access(this_klass->as_klassOop(), super, false))) {
|
|
|
3328 ResourceMark rm(THREAD);
|
|
|
3329 Exceptions::fthrow(
|
|
|
3330 THREAD_AND_LOCATION,
|
|
|
3331 vmSymbolHandles::java_lang_IllegalAccessError(),
|
|
|
3332 "class %s cannot access its superclass %s",
|
|
|
3333 this_klass->external_name(),
|
|
|
3334 instanceKlass::cast(super)->external_name()
|
|
|
3335 );
|
|
|
3336 return;
|
|
|
3337 }
|
|
|
3338 }
|
|
|
3339
|
|
|
3340
|
|
|
3341 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) {
|
|
|
3342 objArrayHandle local_interfaces (THREAD, this_klass->local_interfaces());
|
|
|
3343 int lng = local_interfaces->length();
|
|
|
3344 for (int i = lng - 1; i >= 0; i--) {
|
|
|
3345 klassOop k = klassOop(local_interfaces->obj_at(i));
|
|
|
3346 assert (k != NULL && Klass::cast(k)->is_interface(), "invalid interface");
|
|
|
3347 if (!Reflection::verify_class_access(this_klass->as_klassOop(), k, false)) {
|
|
|
3348 ResourceMark rm(THREAD);
|
|
|
3349 Exceptions::fthrow(
|
|
|
3350 THREAD_AND_LOCATION,
|
|
|
3351 vmSymbolHandles::java_lang_IllegalAccessError(),
|
|
|
3352 "class %s cannot access its superinterface %s",
|
|
|
3353 this_klass->external_name(),
|
|
|
3354 instanceKlass::cast(k)->external_name()
|
|
|
3355 );
|
|
|
3356 return;
|
|
|
3357 }
|
|
|
3358 }
|
|
|
3359 }
|
|
|
3360
|
|
|
3361
|
|
|
3362 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) {
|
|
|
3363 objArrayHandle methods (THREAD, this_klass->methods());
|
|
|
3364 int num_methods = methods->length();
|
|
|
3365
|
|
|
3366 // go thru each method and check if it overrides a final method
|
|
|
3367 for (int index = 0; index < num_methods; index++) {
|
|
|
3368 methodOop m = (methodOop)methods->obj_at(index);
|
|
|
3369
|
|
|
3370 // skip private, static and <init> methods
|
|
|
3371 if ((!m->is_private()) &&
|
|
|
3372 (!m->is_static()) &&
|
|
|
3373 (m->name() != vmSymbols::object_initializer_name())) {
|
|
|
3374
|
|
|
3375 symbolOop name = m->name();
|
|
|
3376 symbolOop signature = m->signature();
|
|
|
3377 klassOop k = this_klass->super();
|
|
|
3378 methodOop super_m = NULL;
|
|
|
3379 while (k != NULL) {
|
|
|
3380 // skip supers that don't have final methods.
|
|
|
3381 if (k->klass_part()->has_final_method()) {
|
|
|
3382 // lookup a matching method in the super class hierarchy
|
|
|
3383 super_m = instanceKlass::cast(k)->lookup_method(name, signature);
|
|
|
3384 if (super_m == NULL) {
|
|
|
3385 break; // didn't find any match; get out
|
|
|
3386 }
|
|
|
3387
|
|
|
3388 if (super_m->is_final() &&
|
|
|
3389 // matching method in super is final
|
|
|
3390 (Reflection::verify_field_access(this_klass->as_klassOop(),
|
|
|
3391 super_m->method_holder(),
|
|
|
3392 super_m->method_holder(),
|
|
|
3393 super_m->access_flags(), false))
|
|
|
3394 // this class can access super final method and therefore override
|
|
|
3395 ) {
|
|
|
3396 ResourceMark rm(THREAD);
|
|
|
3397 Exceptions::fthrow(
|
|
|
3398 THREAD_AND_LOCATION,
|
|
|
3399 vmSymbolHandles::java_lang_VerifyError(),
|
|
|
3400 "class %s overrides final method %s.%s",
|
|
|
3401 this_klass->external_name(),
|
|
|
3402 name->as_C_string(),
|
|
|
3403 signature->as_C_string()
|
|
|
3404 );
|
|
|
3405 return;
|
|
|
3406 }
|
|
|
3407
|
|
|
3408 // continue to look from super_m's holder's super.
|
|
|
3409 k = instanceKlass::cast(super_m->method_holder())->super();
|
|
|
3410 continue;
|
|
|
3411 }
|
|
|
3412
|
|
|
3413 k = k->klass_part()->super();
|
|
|
3414 }
|
|
|
3415 }
|
|
|
3416 }
|
|
|
3417 }
|
|
|
3418
|
|
|
3419
|
|
|
3420 // assumes that this_klass is an interface
|
|
|
3421 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) {
|
|
|
3422 assert(this_klass->is_interface(), "not an interface");
|
|
|
3423 objArrayHandle methods (THREAD, this_klass->methods());
|
|
|
3424 int num_methods = methods->length();
|
|
|
3425
|
|
|
3426 for (int index = 0; index < num_methods; index++) {
|
|
|
3427 methodOop m = (methodOop)methods->obj_at(index);
|
|
|
3428 // if m is static and not the init method, throw a verify error
|
|
|
3429 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) {
|
|
|
3430 ResourceMark rm(THREAD);
|
|
|
3431 Exceptions::fthrow(
|
|
|
3432 THREAD_AND_LOCATION,
|
|
|
3433 vmSymbolHandles::java_lang_VerifyError(),
|
|
|
3434 "Illegal static method %s in interface %s",
|
|
|
3435 m->name()->as_C_string(),
|
|
|
3436 this_klass->external_name()
|
|
|
3437 );
|
|
|
3438 return;
|
|
|
3439 }
|
|
|
3440 }
|
|
|
3441 }
|
|
|
3442
|
|
|
3443 // utility methods for format checking
|
|
|
3444
|
|
|
3445 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) {
|
|
|
3446 if (!_need_verify) { return; }
|
|
|
3447
|
|
|
3448 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0;
|
|
|
3449 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0;
|
|
|
3450 const bool is_final = (flags & JVM_ACC_FINAL) != 0;
|
|
|
3451 const bool is_super = (flags & JVM_ACC_SUPER) != 0;
|
|
|
3452 const bool is_enum = (flags & JVM_ACC_ENUM) != 0;
|
|
|
3453 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0;
|
|
|
3454 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION;
|
|
|
3455
|
|
|
3456 if ((is_abstract && is_final) ||
|
|
|
3457 (is_interface && !is_abstract) ||
|
|
|
3458 (is_interface && major_gte_15 && (is_super || is_enum)) ||
|
|
|
3459 (!is_interface && major_gte_15 && is_annotation)) {
|
|
|
3460 ResourceMark rm(THREAD);
|
|
|
3461 Exceptions::fthrow(
|
|
|
3462 THREAD_AND_LOCATION,
|
|
|
3463 vmSymbolHandles::java_lang_ClassFormatError(),
|
|
|
3464 "Illegal class modifiers in class %s: 0x%X",
|
|
|
3465 _class_name->as_C_string(), flags
|
|
|
3466 );
|
|
|
3467 return;
|
|
|
3468 }
|
|
|
3469 }
|
|
|
3470
|
|
|
3471 bool ClassFileParser::has_illegal_visibility(jint flags) {
|
|
|
3472 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0;
|
|
|
3473 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0;
|
|
|
3474 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0;
|
|
|
3475
|
|
|
3476 return ((is_public && is_protected) ||
|
|
|
3477 (is_public && is_private) ||
|
|
|
3478 (is_protected && is_private));
|
|
|
3479 }
|
|
|
3480
|
|
|
3481 bool ClassFileParser::is_supported_version(u2 major, u2 minor) {
|
|
|
3482 return (major >= JAVA_MIN_SUPPORTED_VERSION) &&
|
|
|
3483 (major <= JAVA_MAX_SUPPORTED_VERSION) &&
|
|
|
3484 ((major != JAVA_MAX_SUPPORTED_VERSION) ||
|
|
|
3485 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION));
|
|
|
3486 }
|
|
|
3487
|
|
|
3488 void ClassFileParser::verify_legal_field_modifiers(
|
|
|
3489 jint flags, bool is_interface, TRAPS) {
|
|
|
3490 if (!_need_verify) { return; }
|
|
|
3491
|
|
|
3492 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0;
|
|
|
3493 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0;
|
|
|
3494 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0;
|
|
|
3495 const bool is_static = (flags & JVM_ACC_STATIC) != 0;
|
|
|
3496 const bool is_final = (flags & JVM_ACC_FINAL) != 0;
|
|
|
3497 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0;
|
|
|
3498 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0;
|
|
|
3499 const bool is_enum = (flags & JVM_ACC_ENUM) != 0;
|
|
|
3500 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION;
|
|
|
3501
|
|
|
3502 bool is_illegal = false;
|
|
|
3503
|
|
|
3504 if (is_interface) {
|
|
|
3505 if (!is_public || !is_static || !is_final || is_private ||
|
|
|
3506 is_protected || is_volatile || is_transient ||
|
|
|
3507 (major_gte_15 && is_enum)) {
|
|
|
3508 is_illegal = true;
|
|
|
3509 }
|
|
|
3510 } else { // not interface
|
|
|
3511 if (has_illegal_visibility(flags) || (is_final && is_volatile)) {
|
|
|
3512 is_illegal = true;
|
|
|
3513 }
|
|
|
3514 }
|
|
|
3515
|
|
|
3516 if (is_illegal) {
|
|
|
3517 ResourceMark rm(THREAD);
|
|
|
3518 Exceptions::fthrow(
|
|
|
3519 THREAD_AND_LOCATION,
|
|
|
3520 vmSymbolHandles::java_lang_ClassFormatError(),
|
|
|
3521 "Illegal field modifiers in class %s: 0x%X",
|
|
|
3522 _class_name->as_C_string(), flags);
|
|
|
3523 return;
|
|
|
3524 }
|
|
|
3525 }
|
|
|
3526
|
|
|
3527 void ClassFileParser::verify_legal_method_modifiers(
|
|
|
3528 jint flags, bool is_interface, symbolHandle name, TRAPS) {
|
|
|
3529 if (!_need_verify) { return; }
|
|
|
3530
|
|
|
3531 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0;
|
|
|
3532 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0;
|
|
|
3533 const bool is_static = (flags & JVM_ACC_STATIC) != 0;
|
|
|
3534 const bool is_final = (flags & JVM_ACC_FINAL) != 0;
|
|
|
3535 const bool is_native = (flags & JVM_ACC_NATIVE) != 0;
|
|
|
3536 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0;
|
|
|
3537 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0;
|
|
|
3538 const bool is_strict = (flags & JVM_ACC_STRICT) != 0;
|
|
|
3539 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0;
|
|
|
3540 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION;
|
|
|
3541 const bool is_initializer = (name == vmSymbols::object_initializer_name());
|
|
|
3542
|
|
|
3543 bool is_illegal = false;
|
|
|
3544
|
|
|
3545 if (is_interface) {
|
|
|
3546 if (!is_abstract || !is_public || is_static || is_final ||
|
|
|
3547 is_native || (major_gte_15 && (is_synchronized || is_strict))) {
|
|
|
3548 is_illegal = true;
|
|
|
3549 }
|
|
|
3550 } else { // not interface
|
|
|
3551 if (is_initializer) {
|
|
|
3552 if (is_static || is_final || is_synchronized || is_native ||
|
|
|
3553 is_abstract || (major_gte_15 && is_bridge)) {
|
|
|
3554 is_illegal = true;
|
|
|
3555 }
|
|
|
3556 } else { // not initializer
|
|
|
3557 if (is_abstract) {
|
|
|
3558 if ((is_final || is_native || is_private || is_static ||
|
|
|
3559 (major_gte_15 && (is_synchronized || is_strict)))) {
|
|
|
3560 is_illegal = true;
|
|
|
3561 }
|
|
|
3562 }
|
|
|
3563 if (has_illegal_visibility(flags)) {
|
|
|
3564 is_illegal = true;
|
|
|
3565 }
|
|
|
3566 }
|
|
|
3567 }
|
|
|
3568
|
|
|
3569 if (is_illegal) {
|
|
|
3570 ResourceMark rm(THREAD);
|
|
|
3571 Exceptions::fthrow(
|
|
|
3572 THREAD_AND_LOCATION,
|
|
|
3573 vmSymbolHandles::java_lang_ClassFormatError(),
|
|
|
3574 "Method %s in class %s has illegal modifiers: 0x%X",
|
|
|
3575 name->as_C_string(), _class_name->as_C_string(), flags);
|
|
|
3576 return;
|
|
|
3577 }
|
|
|
3578 }
|
|
|
3579
|
|
|
3580 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) {
|
|
|
3581 assert(_need_verify, "only called when _need_verify is true");
|
|
|
3582 int i = 0;
|
|
|
3583 int count = length >> 2;
|
|
|
3584 for (int k=0; k<count; k++) {
|
|
|
3585 unsigned char b0 = buffer[i];
|
|
|
3586 unsigned char b1 = buffer[i+1];
|
|
|
3587 unsigned char b2 = buffer[i+2];
|
|
|
3588 unsigned char b3 = buffer[i+3];
|
|
|
3589 // For an unsigned char v,
|
|
|
3590 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128;
|
|
|
3591 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128.
|
|
|
3592 unsigned char res = b0 | b0 - 1 |
|
|
|
3593 b1 | b1 - 1 |
|
|
|
3594 b2 | b2 - 1 |
|
|
|
3595 b3 | b3 - 1;
|
|
|
3596 if (res >= 128) break;
|
|
|
3597 i += 4;
|
|
|
3598 }
|
|
|
3599 for(; i < length; i++) {
|
|
|
3600 unsigned short c;
|
|
|
3601 // no embedded zeros
|
|
|
3602 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK);
|
|
|
3603 if(buffer[i] < 128) {
|
|
|
3604 continue;
|
|
|
3605 }
|
|
|
3606 if ((i + 5) < length) { // see if it's legal supplementary character
|
|
|
3607 if (UTF8::is_supplementary_character(&buffer[i])) {
|
|
|
3608 c = UTF8::get_supplementary_character(&buffer[i]);
|
|
|
3609 i += 5;
|
|
|
3610 continue;
|
|
|
3611 }
|
|
|
3612 }
|
|
|
3613 switch (buffer[i] >> 4) {
|
|
|
3614 default: break;
|
|
|
3615 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF:
|
|
|
3616 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK);
|
|
|
3617 case 0xC: case 0xD: // 110xxxxx 10xxxxxx
|
|
|
3618 c = (buffer[i] & 0x1F) << 6;
|
|
|
3619 i++;
|
|
|
3620 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) {
|
|
|
3621 c += buffer[i] & 0x3F;
|
|
|
3622 if (_major_version <= 47 || c == 0 || c >= 0x80) {
|
|
|
3623 // for classes with major > 47, c must a null or a character in its shortest form
|
|
|
3624 break;
|
|
|
3625 }
|
|
|
3626 }
|
|
|
3627 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK);
|
|
|
3628 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx
|
|
|
3629 c = (buffer[i] & 0xF) << 12;
|
|
|
3630 i += 2;
|
|
|
3631 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) {
|
|
|
3632 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F);
|
|
|
3633 if (_major_version <= 47 || c >= 0x800) {
|
|
|
3634 // for classes with major > 47, c must be in its shortest form
|
|
|
3635 break;
|
|
|
3636 }
|
|
|
3637 }
|
|
|
3638 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK);
|
|
|
3639 } // end of switch
|
|
|
3640 } // end of for
|
|
|
3641 }
|
|
|
3642
|
|
|
3643 // Checks if name is a legal class name.
|
|
|
3644 void ClassFileParser::verify_legal_class_name(symbolHandle name, TRAPS) {
|
|
|
3645 if (!_need_verify || _relax_verify) { return; }
|
|
|
3646
|
|
|
3647 char buf[fixed_buffer_size];
|
|
|
3648 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
|
3649 unsigned int length = name->utf8_length();
|
|
|
3650 bool legal = false;
|
|
|
3651
|
|
|
3652 if (length > 0) {
|
|
|
3653 char* p;
|
|
|
3654 if (bytes[0] == JVM_SIGNATURE_ARRAY) {
|
|
|
3655 p = skip_over_field_signature(bytes, false, length, CHECK);
|
|
|
3656 legal = (p != NULL) && ((p - bytes) == (int)length);
|
|
|
3657 } else if (_major_version < JAVA_1_5_VERSION) {
|
|
|
3658 if (bytes[0] != '<') {
|
|
|
3659 p = skip_over_field_name(bytes, true, length);
|
|
|
3660 legal = (p != NULL) && ((p - bytes) == (int)length);
|
|
|
3661 }
|
|
|
3662 } else {
|
|
|
3663 // 4900761: relax the constraints based on JSR202 spec
|
|
|
3664 // Class names may be drawn from the entire Unicode character set.
|
|
|
3665 // Identifiers between '/' must be unqualified names.
|
|
|
3666 // The utf8 string has been verified when parsing cpool entries.
|
|
|
3667 legal = verify_unqualified_name(bytes, length, LegalClass);
|
|
|
3668 }
|
|
|
3669 }
|
|
|
3670 if (!legal) {
|
|
|
3671 ResourceMark rm(THREAD);
|
|
|
3672 Exceptions::fthrow(
|
|
|
3673 THREAD_AND_LOCATION,
|
|
|
3674 vmSymbolHandles::java_lang_ClassFormatError(),
|
|
|
3675 "Illegal class name \"%s\" in class file %s", bytes,
|
|
|
3676 _class_name->as_C_string()
|
|
|
3677 );
|
|
|
3678 return;
|
|
|
3679 }
|
|
|
3680 }
|
|
|
3681
|
|
|
3682 // Checks if name is a legal field name.
|
|
|
3683 void ClassFileParser::verify_legal_field_name(symbolHandle name, TRAPS) {
|
|
|
3684 if (!_need_verify || _relax_verify) { return; }
|
|
|
3685
|
|
|
3686 char buf[fixed_buffer_size];
|
|
|
3687 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
|
3688 unsigned int length = name->utf8_length();
|
|
|
3689 bool legal = false;
|
|
|
3690
|
|
|
3691 if (length > 0) {
|
|
|
3692 if (_major_version < JAVA_1_5_VERSION) {
|
|
|
3693 if (bytes[0] != '<') {
|
|
|
3694 char* p = skip_over_field_name(bytes, false, length);
|
|
|
3695 legal = (p != NULL) && ((p - bytes) == (int)length);
|
|
|
3696 }
|
|
|
3697 } else {
|
|
|
3698 // 4881221: relax the constraints based on JSR202 spec
|
|
|
3699 legal = verify_unqualified_name(bytes, length, LegalField);
|
|
|
3700 }
|
|
|
3701 }
|
|
|
3702
|
|
|
3703 if (!legal) {
|
|
|
3704 ResourceMark rm(THREAD);
|
|
|
3705 Exceptions::fthrow(
|
|
|
3706 THREAD_AND_LOCATION,
|
|
|
3707 vmSymbolHandles::java_lang_ClassFormatError(),
|
|
|
3708 "Illegal field name \"%s\" in class %s", bytes,
|
|
|
3709 _class_name->as_C_string()
|
|
|
3710 );
|
|
|
3711 return;
|
|
|
3712 }
|
|
|
3713 }
|
|
|
3714
|
|
|
3715 // Checks if name is a legal method name.
|
|
|
3716 void ClassFileParser::verify_legal_method_name(symbolHandle name, TRAPS) {
|
|
|
3717 if (!_need_verify || _relax_verify) { return; }
|
|
|
3718
|
|
|
3719 assert(!name.is_null(), "method name is null");
|
|
|
3720 char buf[fixed_buffer_size];
|
|
|
3721 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
|
3722 unsigned int length = name->utf8_length();
|
|
|
3723 bool legal = false;
|
|
|
3724
|
|
|
3725 if (length > 0) {
|
|
|
3726 if (bytes[0] == '<') {
|
|
|
3727 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) {
|
|
|
3728 legal = true;
|
|
|
3729 }
|
|
|
3730 } else if (_major_version < JAVA_1_5_VERSION) {
|
|
|
3731 char* p;
|
|
|
3732 p = skip_over_field_name(bytes, false, length);
|
|
|
3733 legal = (p != NULL) && ((p - bytes) == (int)length);
|
|
|
3734 } else {
|
|
|
3735 // 4881221: relax the constraints based on JSR202 spec
|
|
|
3736 legal = verify_unqualified_name(bytes, length, LegalMethod);
|
|
|
3737 }
|
|
|
3738 }
|
|
|
3739
|
|
|
3740 if (!legal) {
|
|
|
3741 ResourceMark rm(THREAD);
|
|
|
3742 Exceptions::fthrow(
|
|
|
3743 THREAD_AND_LOCATION,
|
|
|
3744 vmSymbolHandles::java_lang_ClassFormatError(),
|
|
|
3745 "Illegal method name \"%s\" in class %s", bytes,
|
|
|
3746 _class_name->as_C_string()
|
|
|
3747 );
|
|
|
3748 return;
|
|
|
3749 }
|
|
|
3750 }
|
|
|
3751
|
|
|
3752
|
|
|
3753 // Checks if signature is a legal field signature.
|
|
|
3754 void ClassFileParser::verify_legal_field_signature(symbolHandle name, symbolHandle signature, TRAPS) {
|
|
|
3755 if (!_need_verify) { return; }
|
|
|
3756
|
|
|
3757 char buf[fixed_buffer_size];
|
|
|
3758 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
|
3759 unsigned int length = signature->utf8_length();
|
|
|
3760 char* p = skip_over_field_signature(bytes, false, length, CHECK);
|
|
|
3761
|
|
|
3762 if (p == NULL || (p - bytes) != (int)length) {
|
|
|
3763 ResourceMark rm(THREAD);
|
|
|
3764 Exceptions::fthrow(
|
|
|
3765 THREAD_AND_LOCATION,
|
|
|
3766 vmSymbolHandles::java_lang_ClassFormatError(),
|
|
|
3767 "Field \"%s\" in class %s has illegal signature \"%s\"",
|
|
|
3768 name->as_C_string(), _class_name->as_C_string(), bytes
|
|
|
3769 );
|
|
|
3770 return;
|
|
|
3771 }
|
|
|
3772 }
|
|
|
3773
|
|
|
3774 // Checks if signature is a legal method signature.
|
|
|
3775 // Returns number of parameters
|
|
|
3776 int ClassFileParser::verify_legal_method_signature(symbolHandle name, symbolHandle signature, TRAPS) {
|
|
|
3777 if (!_need_verify) {
|
|
|
3778 // make sure caller's args_size will be less than 0 even for non-static
|
|
|
3779 // method so it will be recomputed in compute_size_of_parameters().
|
|
|
3780 return -2;
|
|
|
3781 }
|
|
|
3782
|
|
|
3783 unsigned int args_size = 0;
|
|
|
3784 char buf[fixed_buffer_size];
|
|
|
3785 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size);
|
|
|
3786 unsigned int length = signature->utf8_length();
|
|
|
3787 char* nextp;
|
|
|
3788
|
|
|
3789 // The first character must be a '('
|
|
|
3790 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) {
|
|
|
3791 length--;
|
|
|
3792 // Skip over legal field signatures
|
|
|
3793 nextp = skip_over_field_signature(p, false, length, CHECK_0);
|
|
|
3794 while ((length > 0) && (nextp != NULL)) {
|
|
|
3795 args_size++;
|
|
|
3796 if (p[0] == 'J' || p[0] == 'D') {
|
|
|
3797 args_size++;
|
|
|
3798 }
|
|
|
3799 length -= nextp - p;
|
|
|
3800 p = nextp;
|
|
|
3801 nextp = skip_over_field_signature(p, false, length, CHECK_0);
|
|
|
3802 }
|
|
|
3803 // The first non-signature thing better be a ')'
|
|
|
3804 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) {
|
|
|
3805 length--;
|
|
|
3806 if (name->utf8_length() > 0 && name->byte_at(0) == '<') {
|
|
|
3807 // All internal methods must return void
|
|
|
3808 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) {
|
|
|
3809 return args_size;
|
|
|
3810 }
|
|
|
3811 } else {
|
|
|
3812 // Now we better just have a return value
|
|
|
3813 nextp = skip_over_field_signature(p, true, length, CHECK_0);
|
|
|
3814 if (nextp && ((int)length == (nextp - p))) {
|
|
|
3815 return args_size;
|
|
|
3816 }
|
|
|
3817 }
|
|
|
3818 }
|
|
|
3819 }
|
|
|
3820 // Report error
|
|
|
3821 ResourceMark rm(THREAD);
|
|
|
3822 Exceptions::fthrow(
|
|
|
3823 THREAD_AND_LOCATION,
|
|
|
3824 vmSymbolHandles::java_lang_ClassFormatError(),
|
|
|
3825 "Method \"%s\" in class %s has illegal signature \"%s\"",
|
|
|
3826 name->as_C_string(), _class_name->as_C_string(), p
|
|
|
3827 );
|
|
|
3828 return 0;
|
|
|
3829 }
|
|
|
3830
|
|
|
3831
|
|
|
3832 // Unqualified names may not contain the characters '.', ';', or '/'.
|
|
|
3833 // Method names also may not contain the characters '<' or '>', unless <init> or <clinit>.
|
|
|
3834 // Note that method names may not be <init> or <clinit> in this method.
|
|
|
3835 // Because these names have been checked as special cases before calling this method
|
|
|
3836 // in verify_legal_method_name.
|
|
|
3837 bool ClassFileParser::verify_unqualified_name(char* name, unsigned int length, int type) {
|
|
|
3838 jchar ch;
|
|
|
3839
|
|
|
3840 for (char* p = name; p != name + length; ) {
|
|
|
3841 ch = *p;
|
|
|
3842 if (ch < 128) {
|
|
|
3843 p++;
|
|
|
3844 if (ch == '.' || ch == ';') {
|
|
|
3845 return false; // do not permit '.' or ';'
|
|
|
3846 }
|
|
|
3847 if (type != LegalClass && ch == '/') {
|
|
|
3848 return false; // do not permit '/' unless it's class name
|
|
|
3849 }
|
|
|
3850 if (type == LegalMethod && (ch == '<' || ch == '>')) {
|
|
|
3851 return false; // do not permit '<' or '>' in method names
|
|
|
3852 }
|
|
|
3853 } else {
|
|
|
3854 char* tmp_p = UTF8::next(p, &ch);
|
|
|
3855 p = tmp_p;
|
|
|
3856 }
|
|
|
3857 }
|
|
|
3858 return true;
|
|
|
3859 }
|
|
|
3860
|
|
|
3861
|
|
|
3862 // Take pointer to a string. Skip over the longest part of the string that could
|
|
|
3863 // be taken as a fieldname. Allow '/' if slash_ok is true.
|
|
|
3864 // Return a pointer to just past the fieldname.
|
|
|
3865 // Return NULL if no fieldname at all was found, or in the case of slash_ok
|
|
|
3866 // being true, we saw consecutive slashes (meaning we were looking for a
|
|
|
3867 // qualified path but found something that was badly-formed).
|
|
|
3868 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) {
|
|
|
3869 char* p;
|
|
|
3870 jchar ch;
|
|
|
3871 jboolean last_is_slash = false;
|
|
|
3872 jboolean not_first_ch = false;
|
|
|
3873
|
|
|
3874 for (p = name; p != name + length; not_first_ch = true) {
|
|
|
3875 char* old_p = p;
|
|
|
3876 ch = *p;
|
|
|
3877 if (ch < 128) {
|
|
|
3878 p++;
|
|
|
3879 // quick check for ascii
|
|
|
3880 if ((ch >= 'a' && ch <= 'z') ||
|
|
|
3881 (ch >= 'A' && ch <= 'Z') ||
|
|
|
3882 (ch == '_' || ch == '$') ||
|
|
|
3883 (not_first_ch && ch >= '0' && ch <= '9')) {
|
|
|
3884 last_is_slash = false;
|
|
|
3885 continue;
|
|
|
3886 }
|
|
|
3887 if (slash_ok && ch == '/') {
|
|
|
3888 if (last_is_slash) {
|
|
|
3889 return NULL; // Don't permit consecutive slashes
|
|
|
3890 }
|
|
|
3891 last_is_slash = true;
|
|
|
3892 continue;
|
|
|
3893 }
|
|
|
3894 } else {
|
|
|
3895 jint unicode_ch;
|
|
|
3896 char* tmp_p = UTF8::next_character(p, &unicode_ch);
|
|
|
3897 p = tmp_p;
|
|
|
3898 last_is_slash = false;
|
|
|
3899 // Check if ch is Java identifier start or is Java identifier part
|
|
|
3900 // 4672820: call java.lang.Character methods directly without generating separate tables.
|
|
|
3901 EXCEPTION_MARK;
|
|
|
3902 instanceKlassHandle klass (THREAD, SystemDictionary::char_klass());
|
|
|
3903
|
|
|
3904 // return value
|
|
|
3905 JavaValue result(T_BOOLEAN);
|
|
|
3906 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart
|
|
|
3907 JavaCallArguments args;
|
|
|
3908 args.push_int(unicode_ch);
|
|
|
3909
|
|
|
3910 // public static boolean isJavaIdentifierStart(char ch);
|
|
|
3911 JavaCalls::call_static(&result,
|
|
|
3912 klass,
|
|
|
3913 vmSymbolHandles::isJavaIdentifierStart_name(),
|
|
|
3914 vmSymbolHandles::int_bool_signature(),
|
|
|
3915 &args,
|
|
|
3916 THREAD);
|
|
|
3917
|
|
|
3918 if (HAS_PENDING_EXCEPTION) {
|
|
|
3919 CLEAR_PENDING_EXCEPTION;
|
|
|
3920 return 0;
|
|
|
3921 }
|
|
|
3922 if (result.get_jboolean()) {
|
|
|
3923 continue;
|
|
|
3924 }
|
|
|
3925
|
|
|
3926 if (not_first_ch) {
|
|
|
3927 // public static boolean isJavaIdentifierPart(char ch);
|
|
|
3928 JavaCalls::call_static(&result,
|
|
|
3929 klass,
|
|
|
3930 vmSymbolHandles::isJavaIdentifierPart_name(),
|
|
|
3931 vmSymbolHandles::int_bool_signature(),
|
|
|
3932 &args,
|
|
|
3933 THREAD);
|
|
|
3934
|
|
|
3935 if (HAS_PENDING_EXCEPTION) {
|
|
|
3936 CLEAR_PENDING_EXCEPTION;
|
|
|
3937 return 0;
|
|
|
3938 }
|
|
|
3939
|
|
|
3940 if (result.get_jboolean()) {
|
|
|
3941 continue;
|
|
|
3942 }
|
|
|
3943 }
|
|
|
3944 }
|
|
|
3945 return (not_first_ch) ? old_p : NULL;
|
|
|
3946 }
|
|
|
3947 return (not_first_ch) ? p : NULL;
|
|
|
3948 }
|
|
|
3949
|
|
|
3950
|
|
|
3951 // Take pointer to a string. Skip over the longest part of the string that could
|
|
|
3952 // be taken as a field signature. Allow "void" if void_ok.
|
|
|
3953 // Return a pointer to just past the signature.
|
|
|
3954 // Return NULL if no legal signature is found.
|
|
|
3955 char* ClassFileParser::skip_over_field_signature(char* signature,
|
|
|
3956 bool void_ok,
|
|
|
3957 unsigned int length,
|
|
|
3958 TRAPS) {
|
|
|
3959 unsigned int array_dim = 0;
|
|
|
3960 while (length > 0) {
|
|
|
3961 switch (signature[0]) {
|
|
|
3962 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; }
|
|
|
3963 case JVM_SIGNATURE_BOOLEAN:
|
|
|
3964 case JVM_SIGNATURE_BYTE:
|
|
|
3965 case JVM_SIGNATURE_CHAR:
|
|
|
3966 case JVM_SIGNATURE_SHORT:
|
|
|
3967 case JVM_SIGNATURE_INT:
|
|
|
3968 case JVM_SIGNATURE_FLOAT:
|
|
|
3969 case JVM_SIGNATURE_LONG:
|
|
|
3970 case JVM_SIGNATURE_DOUBLE:
|
|
|
3971 return signature + 1;
|
|
|
3972 case JVM_SIGNATURE_CLASS: {
|
|
|
3973 if (_major_version < JAVA_1_5_VERSION) {
|
|
|
3974 // Skip over the class name if one is there
|
|
|
3975 char* p = skip_over_field_name(signature + 1, true, --length);
|
|
|
3976
|
|
|
3977 // The next character better be a semicolon
|
|
|
3978 if (p && (p - signature) > 1 && p[0] == ';') {
|
|
|
3979 return p + 1;
|
|
|
3980 }
|
|
|
3981 } else {
|
|
|
3982 // 4900761: For class version > 48, any unicode is allowed in class name.
|
|
|
3983 length--;
|
|
|
3984 signature++;
|
|
|
3985 while (length > 0 && signature[0] != ';') {
|
|
|
3986 if (signature[0] == '.') {
|
|
|
3987 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0);
|
|
|
3988 }
|
|
|
3989 length--;
|
|
|
3990 signature++;
|
|
|
3991 }
|
|
|
3992 if (signature[0] == ';') { return signature + 1; }
|
|
|
3993 }
|
|
|
3994
|
|
|
3995 return NULL;
|
|
|
3996 }
|
|
|
3997 case JVM_SIGNATURE_ARRAY:
|
|
|
3998 array_dim++;
|
|
|
3999 if (array_dim > 255) {
|
|
|
4000 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions.
|
|
|
4001 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0);
|
|
|
4002 }
|
|
|
4003 // The rest of what's there better be a legal signature
|
|
|
4004 signature++;
|
|
|
4005 length--;
|
|
|
4006 void_ok = false;
|
|
|
4007 break;
|
|
|
4008
|
|
|
4009 default:
|
|
|
4010 return NULL;
|
|
|
4011 }
|
|
|
4012 }
|
|
|
4013 return NULL;
|
|
|
4014 }
|
