Tue, 11 Nov 2014 10:48:06 -0800
8058251: assert(_count > 0) failed: Negative counter when running runtime/NMT/MallocTrackingVerify.java
Summary: Fixed an issue when overflowing the MallocSite hash table bucket
Reviewed-by: coleenp, gtriantafill
duke@435 | 1 | /* |
mikael@6198 | 2 | * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "classfile/symbolTable.hpp" |
stefank@2314 | 27 | #include "interpreter/bytecodeStream.hpp" |
never@3137 | 28 | #include "oops/fieldStreams.hpp" |
stefank@2314 | 29 | #include "prims/jvmtiClassFileReconstituter.hpp" |
stefank@2314 | 30 | #include "runtime/signature.hpp" |
stefank@2314 | 31 | #ifdef TARGET_ARCH_x86 |
stefank@2314 | 32 | # include "bytes_x86.hpp" |
stefank@2314 | 33 | #endif |
stefank@2314 | 34 | #ifdef TARGET_ARCH_sparc |
stefank@2314 | 35 | # include "bytes_sparc.hpp" |
stefank@2314 | 36 | #endif |
stefank@2314 | 37 | #ifdef TARGET_ARCH_zero |
stefank@2314 | 38 | # include "bytes_zero.hpp" |
stefank@2314 | 39 | #endif |
bobv@2508 | 40 | #ifdef TARGET_ARCH_arm |
bobv@2508 | 41 | # include "bytes_arm.hpp" |
bobv@2508 | 42 | #endif |
bobv@2508 | 43 | #ifdef TARGET_ARCH_ppc |
bobv@2508 | 44 | # include "bytes_ppc.hpp" |
bobv@2508 | 45 | #endif |
minqi@4083 | 46 | // FIXME: add Deprecated attribute |
duke@435 | 47 | // FIXME: fix Synthetic attribute |
coleenp@4037 | 48 | // FIXME: per Serguei, add error return handling for ConstantPool::copy_cpool_bytes() |
duke@435 | 49 | |
duke@435 | 50 | |
duke@435 | 51 | // Write the field information portion of ClassFile structure |
duke@435 | 52 | // JVMSpec| u2 fields_count; |
duke@435 | 53 | // JVMSpec| field_info fields[fields_count]; |
duke@435 | 54 | void JvmtiClassFileReconstituter::write_field_infos() { |
duke@435 | 55 | HandleMark hm(thread()); |
coleenp@4037 | 56 | Array<AnnotationArray*>* fields_anno = ikh()->fields_annotations(); |
aeriksso@7327 | 57 | Array<AnnotationArray*>* fields_type_anno = ikh()->fields_type_annotations(); |
duke@435 | 58 | |
never@3137 | 59 | // Compute the real number of Java fields |
never@3137 | 60 | int java_fields = ikh()->java_fields_count(); |
never@3137 | 61 | |
never@3143 | 62 | write_u2(java_fields); |
never@3137 | 63 | for (JavaFieldStream fs(ikh()); !fs.done(); fs.next()) { |
never@3137 | 64 | AccessFlags access_flags = fs.access_flags(); |
never@3137 | 65 | int name_index = fs.name_index(); |
never@3137 | 66 | int signature_index = fs.signature_index(); |
never@3137 | 67 | int initial_value_index = fs.initval_index(); |
duke@435 | 68 | guarantee(name_index != 0 && signature_index != 0, "bad constant pool index for field"); |
never@3137 | 69 | // int offset = ikh()->field_offset( index ); |
never@3137 | 70 | int generic_signature_index = fs.generic_signature_index(); |
coleenp@4037 | 71 | AnnotationArray* anno = fields_anno == NULL ? NULL : fields_anno->at(fs.index()); |
aeriksso@7327 | 72 | AnnotationArray* type_anno = fields_type_anno == NULL ? NULL : fields_type_anno->at(fs.index()); |
duke@435 | 73 | |
duke@435 | 74 | // JVMSpec| field_info { |
duke@435 | 75 | // JVMSpec| u2 access_flags; |
duke@435 | 76 | // JVMSpec| u2 name_index; |
duke@435 | 77 | // JVMSpec| u2 descriptor_index; |
duke@435 | 78 | // JVMSpec| u2 attributes_count; |
duke@435 | 79 | // JVMSpec| attribute_info attributes[attributes_count]; |
duke@435 | 80 | // JVMSpec| } |
duke@435 | 81 | |
never@3137 | 82 | write_u2(access_flags.as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); |
duke@435 | 83 | write_u2(name_index); |
duke@435 | 84 | write_u2(signature_index); |
duke@435 | 85 | int attr_count = 0; |
duke@435 | 86 | if (initial_value_index != 0) { |
duke@435 | 87 | ++attr_count; |
duke@435 | 88 | } |
duke@435 | 89 | if (access_flags.is_synthetic()) { |
duke@435 | 90 | // ++attr_count; |
duke@435 | 91 | } |
duke@435 | 92 | if (generic_signature_index != 0) { |
duke@435 | 93 | ++attr_count; |
duke@435 | 94 | } |
coleenp@4037 | 95 | if (anno != NULL) { |
duke@435 | 96 | ++attr_count; // has RuntimeVisibleAnnotations attribute |
duke@435 | 97 | } |
aeriksso@7327 | 98 | if (type_anno != NULL) { |
aeriksso@7327 | 99 | ++attr_count; // has RuntimeVisibleTypeAnnotations attribute |
aeriksso@7327 | 100 | } |
duke@435 | 101 | |
duke@435 | 102 | write_u2(attr_count); |
duke@435 | 103 | |
duke@435 | 104 | if (initial_value_index != 0) { |
duke@435 | 105 | write_attribute_name_index("ConstantValue"); |
duke@435 | 106 | write_u4(2); //length always 2 |
duke@435 | 107 | write_u2(initial_value_index); |
duke@435 | 108 | } |
duke@435 | 109 | if (access_flags.is_synthetic()) { |
duke@435 | 110 | // write_synthetic_attribute(); |
duke@435 | 111 | } |
duke@435 | 112 | if (generic_signature_index != 0) { |
duke@435 | 113 | write_signature_attribute(generic_signature_index); |
duke@435 | 114 | } |
coleenp@4037 | 115 | if (anno != NULL) { |
duke@435 | 116 | write_annotations_attribute("RuntimeVisibleAnnotations", anno); |
duke@435 | 117 | } |
aeriksso@7327 | 118 | if (type_anno != NULL) { |
aeriksso@7327 | 119 | write_annotations_attribute("RuntimeVisibleTypeAnnotations", type_anno); |
aeriksso@7327 | 120 | } |
duke@435 | 121 | } |
duke@435 | 122 | } |
duke@435 | 123 | |
duke@435 | 124 | // Write Code attribute |
duke@435 | 125 | // JVMSpec| Code_attribute { |
duke@435 | 126 | // JVMSpec| u2 attribute_name_index; |
duke@435 | 127 | // JVMSpec| u4 attribute_length; |
duke@435 | 128 | // JVMSpec| u2 max_stack; |
duke@435 | 129 | // JVMSpec| u2 max_locals; |
duke@435 | 130 | // JVMSpec| u4 code_length; |
duke@435 | 131 | // JVMSpec| u1 code[code_length]; |
duke@435 | 132 | // JVMSpec| u2 exception_table_length; |
duke@435 | 133 | // JVMSpec| { u2 start_pc; |
duke@435 | 134 | // JVMSpec| u2 end_pc; |
duke@435 | 135 | // JVMSpec| u2 handler_pc; |
duke@435 | 136 | // JVMSpec| u2 catch_type; |
duke@435 | 137 | // JVMSpec| } exception_table[exception_table_length]; |
duke@435 | 138 | // JVMSpec| u2 attributes_count; |
duke@435 | 139 | // JVMSpec| attribute_info attributes[attributes_count]; |
duke@435 | 140 | // JVMSpec| } |
duke@435 | 141 | void JvmtiClassFileReconstituter::write_code_attribute(methodHandle method) { |
coleenp@4037 | 142 | ConstMethod* const_method = method->constMethod(); |
duke@435 | 143 | u2 line_num_cnt = 0; |
duke@435 | 144 | int stackmap_len = 0; |
coleenp@3345 | 145 | int local_variable_table_length = 0; |
minqi@4083 | 146 | int local_variable_type_table_length = 0; |
duke@435 | 147 | |
coleenp@3345 | 148 | // compute number and length of attributes |
duke@435 | 149 | int attr_count = 0; |
duke@435 | 150 | int attr_size = 0; |
duke@435 | 151 | if (const_method->has_linenumber_table()) { |
duke@435 | 152 | line_num_cnt = line_number_table_entries(method); |
duke@435 | 153 | if (line_num_cnt != 0) { |
duke@435 | 154 | ++attr_count; |
duke@435 | 155 | // Compute the complete size of the line number table attribute: |
duke@435 | 156 | // LineNumberTable_attribute { |
duke@435 | 157 | // u2 attribute_name_index; |
duke@435 | 158 | // u4 attribute_length; |
duke@435 | 159 | // u2 line_number_table_length; |
duke@435 | 160 | // { u2 start_pc; |
duke@435 | 161 | // u2 line_number; |
duke@435 | 162 | // } line_number_table[line_number_table_length]; |
duke@435 | 163 | // } |
duke@435 | 164 | attr_size += 2 + 4 + 2 + line_num_cnt * (2 + 2); |
duke@435 | 165 | } |
duke@435 | 166 | } |
duke@435 | 167 | if (method->has_stackmap_table()) { |
duke@435 | 168 | stackmap_len = method->stackmap_data()->length(); |
duke@435 | 169 | if (stackmap_len != 0) { |
duke@435 | 170 | ++attr_count; |
duke@435 | 171 | // Compute the size of the stack map table attribute (VM stores raw): |
duke@435 | 172 | // StackMapTable_attribute { |
duke@435 | 173 | // u2 attribute_name_index; |
duke@435 | 174 | // u4 attribute_length; |
duke@435 | 175 | // u2 number_of_entries; |
duke@435 | 176 | // stack_map_frame_entries[number_of_entries]; |
duke@435 | 177 | // } |
duke@435 | 178 | attr_size += 2 + 4 + stackmap_len; |
duke@435 | 179 | } |
duke@435 | 180 | } |
coleenp@3345 | 181 | if (method->has_localvariable_table()) { |
coleenp@3345 | 182 | local_variable_table_length = method->localvariable_table_length(); |
coleenp@3345 | 183 | if (local_variable_table_length != 0) { |
minqi@4083 | 184 | ++attr_count; |
coleenp@3345 | 185 | // Compute the size of the local variable table attribute (VM stores raw): |
coleenp@3345 | 186 | // LocalVariableTable_attribute { |
coleenp@3345 | 187 | // u2 attribute_name_index; |
coleenp@3345 | 188 | // u4 attribute_length; |
coleenp@3345 | 189 | // u2 local_variable_table_length; |
coleenp@3345 | 190 | // { |
coleenp@3345 | 191 | // u2 start_pc; |
coleenp@3345 | 192 | // u2 length; |
coleenp@3345 | 193 | // u2 name_index; |
coleenp@3345 | 194 | // u2 descriptor_index; |
coleenp@3345 | 195 | // u2 index; |
coleenp@3345 | 196 | // } |
coleenp@3345 | 197 | attr_size += 2 + 4 + 2 + local_variable_table_length * (2 + 2 + 2 + 2 + 2); |
minqi@4083 | 198 | |
minqi@4083 | 199 | // Local variables with generic signatures must have LVTT entries |
minqi@4083 | 200 | LocalVariableTableElement *elem = method->localvariable_table_start(); |
minqi@4083 | 201 | for (int idx = 0; idx < local_variable_table_length; idx++) { |
minqi@4083 | 202 | if (elem[idx].signature_cp_index != 0) { |
minqi@4083 | 203 | local_variable_type_table_length++; |
minqi@4083 | 204 | } |
minqi@4083 | 205 | } |
minqi@4083 | 206 | |
minqi@4083 | 207 | if (local_variable_type_table_length != 0) { |
minqi@4083 | 208 | ++attr_count; |
minqi@4083 | 209 | // Compute the size of the local variable type table attribute (VM stores raw): |
minqi@4083 | 210 | // LocalVariableTypeTable_attribute { |
minqi@4083 | 211 | // u2 attribute_name_index; |
minqi@4083 | 212 | // u4 attribute_length; |
minqi@4083 | 213 | // u2 local_variable_type_table_length; |
minqi@4083 | 214 | // { |
minqi@4083 | 215 | // u2 start_pc; |
minqi@4083 | 216 | // u2 length; |
minqi@4083 | 217 | // u2 name_index; |
minqi@4083 | 218 | // u2 signature_index; |
minqi@4083 | 219 | // u2 index; |
minqi@4083 | 220 | // } |
minqi@4083 | 221 | attr_size += 2 + 4 + 2 + local_variable_type_table_length * (2 + 2 + 2 + 2 + 2); |
minqi@4083 | 222 | } |
coleenp@3345 | 223 | } |
coleenp@3345 | 224 | } |
duke@435 | 225 | |
jiangli@3917 | 226 | ExceptionTable exception_table(method()); |
jiangli@3917 | 227 | int exception_table_length = exception_table.length(); |
duke@435 | 228 | int code_size = const_method->code_size(); |
duke@435 | 229 | int size = |
duke@435 | 230 | 2+2+4 + // max_stack, max_locals, code_length |
duke@435 | 231 | code_size + // code |
duke@435 | 232 | 2 + // exception_table_length |
jiangli@3917 | 233 | (2+2+2+2) * exception_table_length + // exception_table |
duke@435 | 234 | 2 + // attributes_count |
duke@435 | 235 | attr_size; // attributes |
duke@435 | 236 | |
duke@435 | 237 | write_attribute_name_index("Code"); |
duke@435 | 238 | write_u4(size); |
sspitsyn@4270 | 239 | write_u2(method->verifier_max_stack()); |
duke@435 | 240 | write_u2(method->max_locals()); |
duke@435 | 241 | write_u4(code_size); |
duke@435 | 242 | copy_bytecodes(method, (unsigned char*)writeable_address(code_size)); |
jiangli@3917 | 243 | write_u2(exception_table_length); |
jiangli@3917 | 244 | for (int index = 0; index < exception_table_length; index++) { |
jiangli@3917 | 245 | write_u2(exception_table.start_pc(index)); |
jiangli@3917 | 246 | write_u2(exception_table.end_pc(index)); |
jiangli@3917 | 247 | write_u2(exception_table.handler_pc(index)); |
jiangli@3917 | 248 | write_u2(exception_table.catch_type_index(index)); |
duke@435 | 249 | } |
duke@435 | 250 | write_u2(attr_count); |
duke@435 | 251 | if (line_num_cnt != 0) { |
duke@435 | 252 | write_line_number_table_attribute(method, line_num_cnt); |
duke@435 | 253 | } |
duke@435 | 254 | if (stackmap_len != 0) { |
duke@435 | 255 | write_stackmap_table_attribute(method, stackmap_len); |
duke@435 | 256 | } |
coleenp@3345 | 257 | if (local_variable_table_length != 0) { |
coleenp@3345 | 258 | write_local_variable_table_attribute(method, local_variable_table_length); |
coleenp@3345 | 259 | } |
minqi@4083 | 260 | if (local_variable_type_table_length != 0) { |
minqi@4083 | 261 | write_local_variable_type_table_attribute(method, local_variable_type_table_length); |
minqi@4083 | 262 | } |
duke@435 | 263 | } |
duke@435 | 264 | |
duke@435 | 265 | // Write Exceptions attribute |
duke@435 | 266 | // JVMSpec| Exceptions_attribute { |
duke@435 | 267 | // JVMSpec| u2 attribute_name_index; |
duke@435 | 268 | // JVMSpec| u4 attribute_length; |
duke@435 | 269 | // JVMSpec| u2 number_of_exceptions; |
duke@435 | 270 | // JVMSpec| u2 exception_index_table[number_of_exceptions]; |
duke@435 | 271 | // JVMSpec| } |
coleenp@4037 | 272 | void JvmtiClassFileReconstituter::write_exceptions_attribute(ConstMethod* const_method) { |
duke@435 | 273 | CheckedExceptionElement* checked_exceptions = const_method->checked_exceptions_start(); |
duke@435 | 274 | int checked_exceptions_length = const_method->checked_exceptions_length(); |
duke@435 | 275 | int size = |
duke@435 | 276 | 2 + // number_of_exceptions |
duke@435 | 277 | 2 * checked_exceptions_length; // exception_index_table |
duke@435 | 278 | |
duke@435 | 279 | write_attribute_name_index("Exceptions"); |
duke@435 | 280 | write_u4(size); |
duke@435 | 281 | write_u2(checked_exceptions_length); |
duke@435 | 282 | for (int index = 0; index < checked_exceptions_length; index++) { |
duke@435 | 283 | write_u2(checked_exceptions[index].class_cp_index); |
duke@435 | 284 | } |
duke@435 | 285 | } |
duke@435 | 286 | |
duke@435 | 287 | // Write SourceFile attribute |
duke@435 | 288 | // JVMSpec| SourceFile_attribute { |
duke@435 | 289 | // JVMSpec| u2 attribute_name_index; |
duke@435 | 290 | // JVMSpec| u4 attribute_length; |
duke@435 | 291 | // JVMSpec| u2 sourcefile_index; |
duke@435 | 292 | // JVMSpec| } |
duke@435 | 293 | void JvmtiClassFileReconstituter::write_source_file_attribute() { |
duke@435 | 294 | assert(ikh()->source_file_name() != NULL, "caller must check"); |
duke@435 | 295 | |
duke@435 | 296 | write_attribute_name_index("SourceFile"); |
duke@435 | 297 | write_u4(2); // always length 2 |
duke@435 | 298 | write_u2(symbol_to_cpool_index(ikh()->source_file_name())); |
duke@435 | 299 | } |
duke@435 | 300 | |
duke@435 | 301 | // Write SourceDebugExtension attribute |
duke@435 | 302 | // JSR45| SourceDebugExtension_attribute { |
duke@435 | 303 | // JSR45| u2 attribute_name_index; |
duke@435 | 304 | // JSR45| u4 attribute_length; |
fparain@3906 | 305 | // JSR45| u1 debug_extension[attribute_length]; |
duke@435 | 306 | // JSR45| } |
duke@435 | 307 | void JvmtiClassFileReconstituter::write_source_debug_extension_attribute() { |
duke@435 | 308 | assert(ikh()->source_debug_extension() != NULL, "caller must check"); |
duke@435 | 309 | |
duke@435 | 310 | write_attribute_name_index("SourceDebugExtension"); |
fparain@3906 | 311 | int len = (int)strlen(ikh()->source_debug_extension()); |
fparain@3906 | 312 | write_u4(len); |
fparain@3906 | 313 | u1* ext = (u1*)ikh()->source_debug_extension(); |
fparain@3906 | 314 | for (int i=0; i<len; i++) { |
fparain@3906 | 315 | write_u1(ext[i]); |
fparain@3906 | 316 | } |
duke@435 | 317 | } |
duke@435 | 318 | |
duke@435 | 319 | // Write (generic) Signature attribute |
duke@435 | 320 | // JVMSpec| Signature_attribute { |
duke@435 | 321 | // JVMSpec| u2 attribute_name_index; |
duke@435 | 322 | // JVMSpec| u4 attribute_length; |
duke@435 | 323 | // JVMSpec| u2 signature_index; |
duke@435 | 324 | // JVMSpec| } |
duke@435 | 325 | void JvmtiClassFileReconstituter::write_signature_attribute(u2 generic_signature_index) { |
duke@435 | 326 | write_attribute_name_index("Signature"); |
duke@435 | 327 | write_u4(2); // always length 2 |
duke@435 | 328 | write_u2(generic_signature_index); |
duke@435 | 329 | } |
duke@435 | 330 | |
duke@435 | 331 | // Compute the number of entries in the InnerClasses attribute |
duke@435 | 332 | u2 JvmtiClassFileReconstituter::inner_classes_attribute_length() { |
jiangli@3670 | 333 | InnerClassesIterator iter(ikh()); |
jiangli@3670 | 334 | return iter.length(); |
duke@435 | 335 | } |
duke@435 | 336 | |
duke@435 | 337 | // Write an annotation attribute. The VM stores them in raw form, so all we need |
duke@435 | 338 | // to do is add the attrubute name and fill in the length. |
duke@435 | 339 | // JSR202| *Annotations_attribute { |
duke@435 | 340 | // JSR202| u2 attribute_name_index; |
duke@435 | 341 | // JSR202| u4 attribute_length; |
duke@435 | 342 | // JSR202| ... |
duke@435 | 343 | // JSR202| } |
duke@435 | 344 | void JvmtiClassFileReconstituter::write_annotations_attribute(const char* attr_name, |
coleenp@4037 | 345 | AnnotationArray* annos) { |
duke@435 | 346 | u4 length = annos->length(); |
duke@435 | 347 | write_attribute_name_index(attr_name); |
duke@435 | 348 | write_u4(length); |
coleenp@4037 | 349 | memcpy(writeable_address(length), annos->adr_at(0), length); |
duke@435 | 350 | } |
duke@435 | 351 | |
sla@5058 | 352 | // BootstrapMethods_attribute { |
sla@5058 | 353 | // u2 attribute_name_index; |
sla@5058 | 354 | // u4 attribute_length; |
sla@5058 | 355 | // u2 num_bootstrap_methods; |
sla@5058 | 356 | // { u2 bootstrap_method_ref; |
sla@5058 | 357 | // u2 num_bootstrap_arguments; |
sla@5058 | 358 | // u2 bootstrap_arguments[num_bootstrap_arguments]; |
sla@5058 | 359 | // } bootstrap_methods[num_bootstrap_methods]; |
sla@5058 | 360 | // } |
sla@5060 | 361 | void JvmtiClassFileReconstituter::write_bootstrapmethod_attribute() { |
sla@5058 | 362 | Array<u2>* operands = cpool()->operands(); |
sla@5058 | 363 | write_attribute_name_index("BootstrapMethods"); |
sla@5058 | 364 | int num_bootstrap_methods = ConstantPool::operand_array_length(operands); |
sla@5058 | 365 | |
sla@5058 | 366 | // calculate length of attribute |
sla@5060 | 367 | int length = sizeof(u2); // num_bootstrap_methods |
sla@5058 | 368 | for (int n = 0; n < num_bootstrap_methods; n++) { |
sla@5058 | 369 | u2 num_bootstrap_arguments = cpool()->operand_argument_count_at(n); |
sla@5058 | 370 | length += sizeof(u2); // bootstrap_method_ref |
sla@5058 | 371 | length += sizeof(u2); // num_bootstrap_arguments |
sla@5058 | 372 | length += sizeof(u2) * num_bootstrap_arguments; // bootstrap_arguments[num_bootstrap_arguments] |
sla@5058 | 373 | } |
sla@5058 | 374 | write_u4(length); |
sla@5058 | 375 | |
sla@5058 | 376 | // write attribute |
sla@5058 | 377 | write_u2(num_bootstrap_methods); |
sla@5058 | 378 | for (int n = 0; n < num_bootstrap_methods; n++) { |
sla@5058 | 379 | u2 bootstrap_method_ref = cpool()->operand_bootstrap_method_ref_index_at(n); |
sla@5058 | 380 | u2 num_bootstrap_arguments = cpool()->operand_argument_count_at(n); |
sla@5058 | 381 | write_u2(bootstrap_method_ref); |
sla@5058 | 382 | write_u2(num_bootstrap_arguments); |
sla@5058 | 383 | for (int arg = 0; arg < num_bootstrap_arguments; arg++) { |
sla@5058 | 384 | u2 bootstrap_argument = cpool()->operand_argument_index_at(n, arg); |
sla@5058 | 385 | write_u2(bootstrap_argument); |
sla@5058 | 386 | } |
sla@5058 | 387 | } |
sla@5058 | 388 | } |
sla@5058 | 389 | |
duke@435 | 390 | |
duke@435 | 391 | // Write InnerClasses attribute |
duke@435 | 392 | // JVMSpec| InnerClasses_attribute { |
duke@435 | 393 | // JVMSpec| u2 attribute_name_index; |
duke@435 | 394 | // JVMSpec| u4 attribute_length; |
duke@435 | 395 | // JVMSpec| u2 number_of_classes; |
duke@435 | 396 | // JVMSpec| { u2 inner_class_info_index; |
duke@435 | 397 | // JVMSpec| u2 outer_class_info_index; |
duke@435 | 398 | // JVMSpec| u2 inner_name_index; |
duke@435 | 399 | // JVMSpec| u2 inner_class_access_flags; |
duke@435 | 400 | // JVMSpec| } classes[number_of_classes]; |
duke@435 | 401 | // JVMSpec| } |
duke@435 | 402 | void JvmtiClassFileReconstituter::write_inner_classes_attribute(int length) { |
jiangli@3670 | 403 | InnerClassesIterator iter(ikh()); |
jiangli@3670 | 404 | guarantee(iter.length() != 0 && iter.length() == length, |
duke@435 | 405 | "caller must check"); |
coleenp@4037 | 406 | u2 entry_count = length / InstanceKlass::inner_class_next_offset; |
duke@435 | 407 | u4 size = 2 + entry_count * (2+2+2+2); |
duke@435 | 408 | |
duke@435 | 409 | write_attribute_name_index("InnerClasses"); |
duke@435 | 410 | write_u4(size); |
duke@435 | 411 | write_u2(entry_count); |
jiangli@3670 | 412 | for (; !iter.done(); iter.next()) { |
jiangli@3670 | 413 | write_u2(iter.inner_class_info_index()); |
jiangli@3670 | 414 | write_u2(iter.outer_class_info_index()); |
jiangli@3670 | 415 | write_u2(iter.inner_name_index()); |
jiangli@3670 | 416 | write_u2(iter.inner_access_flags()); |
duke@435 | 417 | } |
duke@435 | 418 | } |
duke@435 | 419 | |
duke@435 | 420 | // Write Synthetic attribute |
duke@435 | 421 | // JVMSpec| Synthetic_attribute { |
duke@435 | 422 | // JVMSpec| u2 attribute_name_index; |
duke@435 | 423 | // JVMSpec| u4 attribute_length; |
duke@435 | 424 | // JVMSpec| } |
duke@435 | 425 | void JvmtiClassFileReconstituter::write_synthetic_attribute() { |
duke@435 | 426 | write_attribute_name_index("Synthetic"); |
duke@435 | 427 | write_u4(0); //length always zero |
duke@435 | 428 | } |
duke@435 | 429 | |
duke@435 | 430 | // Compute size of LineNumberTable |
duke@435 | 431 | u2 JvmtiClassFileReconstituter::line_number_table_entries(methodHandle method) { |
duke@435 | 432 | // The line number table is compressed so we don't know how big it is until decompressed. |
duke@435 | 433 | // Decompression is really fast so we just do it twice. |
duke@435 | 434 | u2 num_entries = 0; |
duke@435 | 435 | CompressedLineNumberReadStream stream(method->compressed_linenumber_table()); |
duke@435 | 436 | while (stream.read_pair()) { |
duke@435 | 437 | num_entries++; |
duke@435 | 438 | } |
duke@435 | 439 | return num_entries; |
duke@435 | 440 | } |
duke@435 | 441 | |
duke@435 | 442 | // Write LineNumberTable attribute |
duke@435 | 443 | // JVMSpec| LineNumberTable_attribute { |
duke@435 | 444 | // JVMSpec| u2 attribute_name_index; |
duke@435 | 445 | // JVMSpec| u4 attribute_length; |
duke@435 | 446 | // JVMSpec| u2 line_number_table_length; |
duke@435 | 447 | // JVMSpec| { u2 start_pc; |
duke@435 | 448 | // JVMSpec| u2 line_number; |
duke@435 | 449 | // JVMSpec| } line_number_table[line_number_table_length]; |
duke@435 | 450 | // JVMSpec| } |
duke@435 | 451 | void JvmtiClassFileReconstituter::write_line_number_table_attribute(methodHandle method, |
duke@435 | 452 | u2 num_entries) { |
duke@435 | 453 | |
duke@435 | 454 | write_attribute_name_index("LineNumberTable"); |
duke@435 | 455 | write_u4(2 + num_entries * (2 + 2)); |
duke@435 | 456 | write_u2(num_entries); |
duke@435 | 457 | |
duke@435 | 458 | CompressedLineNumberReadStream stream(method->compressed_linenumber_table()); |
duke@435 | 459 | while (stream.read_pair()) { |
duke@435 | 460 | write_u2(stream.bci()); |
duke@435 | 461 | write_u2(stream.line()); |
duke@435 | 462 | } |
duke@435 | 463 | } |
duke@435 | 464 | |
minqi@4083 | 465 | // Write LocalVariableTable attribute |
coleenp@3345 | 466 | // JVMSpec| LocalVariableTable_attribute { |
coleenp@3345 | 467 | // JVMSpec| u2 attribute_name_index; |
coleenp@3345 | 468 | // JVMSpec| u4 attribute_length; |
coleenp@3345 | 469 | // JVMSpec| u2 local_variable_table_length; |
coleenp@3345 | 470 | // JVMSpec| { u2 start_pc; |
coleenp@3345 | 471 | // JVMSpec| u2 length; |
coleenp@3345 | 472 | // JVMSpec| u2 name_index; |
coleenp@3345 | 473 | // JVMSpec| u2 descriptor_index; |
coleenp@3345 | 474 | // JVMSpec| u2 index; |
coleenp@3345 | 475 | // JVMSpec| } local_variable_table[local_variable_table_length]; |
coleenp@3345 | 476 | // JVMSpec| } |
coleenp@3345 | 477 | void JvmtiClassFileReconstituter::write_local_variable_table_attribute(methodHandle method, u2 num_entries) { |
coleenp@3345 | 478 | write_attribute_name_index("LocalVariableTable"); |
coleenp@3345 | 479 | write_u4(2 + num_entries * (2 + 2 + 2 + 2 + 2)); |
coleenp@3345 | 480 | write_u2(num_entries); |
coleenp@3345 | 481 | |
coleenp@3345 | 482 | assert(method->localvariable_table_length() == num_entries, "just checking"); |
coleenp@3345 | 483 | |
coleenp@3345 | 484 | LocalVariableTableElement *elem = method->localvariable_table_start(); |
coleenp@3345 | 485 | for (int j=0; j<method->localvariable_table_length(); j++) { |
coleenp@3345 | 486 | write_u2(elem->start_bci); |
coleenp@3345 | 487 | write_u2(elem->length); |
coleenp@3345 | 488 | write_u2(elem->name_cp_index); |
coleenp@3345 | 489 | write_u2(elem->descriptor_cp_index); |
coleenp@3345 | 490 | write_u2(elem->slot); |
coleenp@3345 | 491 | elem++; |
coleenp@3345 | 492 | } |
coleenp@3345 | 493 | } |
coleenp@3345 | 494 | |
minqi@4083 | 495 | // Write LocalVariableTypeTable attribute |
minqi@4083 | 496 | // JVMSpec| LocalVariableTypeTable_attribute { |
minqi@4083 | 497 | // JVMSpec| u2 attribute_name_index; |
minqi@4083 | 498 | // JVMSpec| u4 attribute_length; |
minqi@4083 | 499 | // JVMSpec| u2 local_variable_type_table_length; |
minqi@4083 | 500 | // JVMSpec| { u2 start_pc; |
minqi@4083 | 501 | // JVMSpec| u2 length; |
minqi@4083 | 502 | // JVMSpec| u2 name_index; |
minqi@4083 | 503 | // JVMSpec| u2 signature_index; |
minqi@4083 | 504 | // JVMSpec| u2 index; |
minqi@4083 | 505 | // JVMSpec| } local_variable_type_table[local_variable_type_table_length]; |
minqi@4083 | 506 | // JVMSpec| } |
minqi@4083 | 507 | void JvmtiClassFileReconstituter::write_local_variable_type_table_attribute(methodHandle method, u2 num_entries) { |
minqi@4083 | 508 | write_attribute_name_index("LocalVariableTypeTable"); |
minqi@4083 | 509 | write_u4(2 + num_entries * (2 + 2 + 2 + 2 + 2)); |
minqi@4083 | 510 | write_u2(num_entries); |
minqi@4083 | 511 | |
minqi@4083 | 512 | LocalVariableTableElement *elem = method->localvariable_table_start(); |
minqi@4083 | 513 | for (int j=0; j<method->localvariable_table_length(); j++) { |
minqi@4083 | 514 | if (elem->signature_cp_index > 0) { |
minqi@4083 | 515 | // Local variable has a generic signature - write LVTT attribute entry |
minqi@4083 | 516 | write_u2(elem->start_bci); |
minqi@4083 | 517 | write_u2(elem->length); |
minqi@4083 | 518 | write_u2(elem->name_cp_index); |
minqi@4083 | 519 | write_u2(elem->signature_cp_index); |
minqi@4083 | 520 | write_u2(elem->slot); |
minqi@4083 | 521 | num_entries--; |
minqi@4083 | 522 | } |
minqi@4083 | 523 | elem++; |
minqi@4083 | 524 | } |
minqi@4083 | 525 | assert(num_entries == 0, "just checking"); |
minqi@4083 | 526 | } |
minqi@4083 | 527 | |
duke@435 | 528 | // Write stack map table attribute |
duke@435 | 529 | // JSR-202| StackMapTable_attribute { |
duke@435 | 530 | // JSR-202| u2 attribute_name_index; |
duke@435 | 531 | // JSR-202| u4 attribute_length; |
duke@435 | 532 | // JSR-202| u2 number_of_entries; |
duke@435 | 533 | // JSR-202| stack_map_frame_entries[number_of_entries]; |
duke@435 | 534 | // JSR-202| } |
duke@435 | 535 | void JvmtiClassFileReconstituter::write_stackmap_table_attribute(methodHandle method, |
duke@435 | 536 | int stackmap_len) { |
duke@435 | 537 | |
duke@435 | 538 | write_attribute_name_index("StackMapTable"); |
duke@435 | 539 | write_u4(stackmap_len); |
duke@435 | 540 | memcpy( |
duke@435 | 541 | writeable_address(stackmap_len), |
coleenp@4037 | 542 | (void*)(method->stackmap_data()->adr_at(0)), |
duke@435 | 543 | stackmap_len); |
duke@435 | 544 | } |
duke@435 | 545 | |
duke@435 | 546 | // Write one method_info structure |
duke@435 | 547 | // JVMSpec| method_info { |
duke@435 | 548 | // JVMSpec| u2 access_flags; |
duke@435 | 549 | // JVMSpec| u2 name_index; |
duke@435 | 550 | // JVMSpec| u2 descriptor_index; |
duke@435 | 551 | // JVMSpec| u2 attributes_count; |
duke@435 | 552 | // JVMSpec| attribute_info attributes[attributes_count]; |
duke@435 | 553 | // JVMSpec| } |
duke@435 | 554 | void JvmtiClassFileReconstituter::write_method_info(methodHandle method) { |
duke@435 | 555 | AccessFlags access_flags = method->access_flags(); |
coleenp@4037 | 556 | ConstMethod* const_method = method->constMethod(); |
duke@435 | 557 | u2 generic_signature_index = const_method->generic_signature_index(); |
coleenp@4037 | 558 | AnnotationArray* anno = method->annotations(); |
coleenp@4037 | 559 | AnnotationArray* param_anno = method->parameter_annotations(); |
coleenp@4037 | 560 | AnnotationArray* default_anno = method->annotation_default(); |
aeriksso@7327 | 561 | AnnotationArray* type_anno = method->type_annotations(); |
duke@435 | 562 | |
sla@5045 | 563 | // skip generated default interface methods |
sla@5045 | 564 | if (method->is_overpass()) { |
sla@5045 | 565 | return; |
sla@5045 | 566 | } |
sla@5045 | 567 | |
duke@435 | 568 | write_u2(access_flags.get_flags() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
duke@435 | 569 | write_u2(const_method->name_index()); |
duke@435 | 570 | write_u2(const_method->signature_index()); |
duke@435 | 571 | |
duke@435 | 572 | // write attributes in the same order javac does, so we can test with byte for |
duke@435 | 573 | // byte comparison |
duke@435 | 574 | int attr_count = 0; |
duke@435 | 575 | if (const_method->code_size() != 0) { |
duke@435 | 576 | ++attr_count; // has Code attribute |
duke@435 | 577 | } |
duke@435 | 578 | if (const_method->has_checked_exceptions()) { |
duke@435 | 579 | ++attr_count; // has Exceptions attribute |
duke@435 | 580 | } |
coleenp@4037 | 581 | if (default_anno != NULL) { |
duke@435 | 582 | ++attr_count; // has AnnotationDefault attribute |
duke@435 | 583 | } |
duke@435 | 584 | // Deprecated attribute would go here |
duke@435 | 585 | if (access_flags.is_synthetic()) { // FIXME |
duke@435 | 586 | // ++attr_count; |
duke@435 | 587 | } |
duke@435 | 588 | if (generic_signature_index != 0) { |
duke@435 | 589 | ++attr_count; |
duke@435 | 590 | } |
coleenp@4037 | 591 | if (anno != NULL) { |
duke@435 | 592 | ++attr_count; // has RuntimeVisibleAnnotations attribute |
duke@435 | 593 | } |
coleenp@4037 | 594 | if (param_anno != NULL) { |
duke@435 | 595 | ++attr_count; // has RuntimeVisibleParameterAnnotations attribute |
duke@435 | 596 | } |
aeriksso@7327 | 597 | if (type_anno != NULL) { |
aeriksso@7327 | 598 | ++attr_count; // has RuntimeVisibleTypeAnnotations attribute |
aeriksso@7327 | 599 | } |
duke@435 | 600 | |
duke@435 | 601 | write_u2(attr_count); |
duke@435 | 602 | if (const_method->code_size() > 0) { |
duke@435 | 603 | write_code_attribute(method); |
duke@435 | 604 | } |
duke@435 | 605 | if (const_method->has_checked_exceptions()) { |
duke@435 | 606 | write_exceptions_attribute(const_method); |
duke@435 | 607 | } |
coleenp@4037 | 608 | if (default_anno != NULL) { |
duke@435 | 609 | write_annotations_attribute("AnnotationDefault", default_anno); |
duke@435 | 610 | } |
duke@435 | 611 | // Deprecated attribute would go here |
duke@435 | 612 | if (access_flags.is_synthetic()) { |
duke@435 | 613 | // write_synthetic_attribute(); |
duke@435 | 614 | } |
duke@435 | 615 | if (generic_signature_index != 0) { |
duke@435 | 616 | write_signature_attribute(generic_signature_index); |
duke@435 | 617 | } |
coleenp@4037 | 618 | if (anno != NULL) { |
duke@435 | 619 | write_annotations_attribute("RuntimeVisibleAnnotations", anno); |
duke@435 | 620 | } |
coleenp@4037 | 621 | if (param_anno != NULL) { |
duke@435 | 622 | write_annotations_attribute("RuntimeVisibleParameterAnnotations", param_anno); |
duke@435 | 623 | } |
aeriksso@7327 | 624 | if (type_anno != NULL) { |
aeriksso@7327 | 625 | write_annotations_attribute("RuntimeVisibleTypeAnnotations", type_anno); |
aeriksso@7327 | 626 | } |
duke@435 | 627 | } |
duke@435 | 628 | |
duke@435 | 629 | // Write the class attributes portion of ClassFile structure |
duke@435 | 630 | // JVMSpec| u2 attributes_count; |
duke@435 | 631 | // JVMSpec| attribute_info attributes[attributes_count]; |
duke@435 | 632 | void JvmtiClassFileReconstituter::write_class_attributes() { |
duke@435 | 633 | u2 inner_classes_length = inner_classes_attribute_length(); |
coleenp@2497 | 634 | Symbol* generic_signature = ikh()->generic_signature(); |
coleenp@4037 | 635 | AnnotationArray* anno = ikh()->class_annotations(); |
aeriksso@7327 | 636 | AnnotationArray* type_anno = ikh()->class_type_annotations(); |
duke@435 | 637 | |
duke@435 | 638 | int attr_count = 0; |
coleenp@2497 | 639 | if (generic_signature != NULL) { |
duke@435 | 640 | ++attr_count; |
duke@435 | 641 | } |
duke@435 | 642 | if (ikh()->source_file_name() != NULL) { |
duke@435 | 643 | ++attr_count; |
duke@435 | 644 | } |
duke@435 | 645 | if (ikh()->source_debug_extension() != NULL) { |
duke@435 | 646 | ++attr_count; |
duke@435 | 647 | } |
duke@435 | 648 | if (inner_classes_length > 0) { |
duke@435 | 649 | ++attr_count; |
duke@435 | 650 | } |
coleenp@4037 | 651 | if (anno != NULL) { |
duke@435 | 652 | ++attr_count; // has RuntimeVisibleAnnotations attribute |
duke@435 | 653 | } |
aeriksso@7327 | 654 | if (type_anno != NULL) { |
aeriksso@7327 | 655 | ++attr_count; // has RuntimeVisibleTypeAnnotations attribute |
aeriksso@7327 | 656 | } |
sla@5058 | 657 | if (cpool()->operands() != NULL) { |
sla@5058 | 658 | ++attr_count; |
sla@5058 | 659 | } |
duke@435 | 660 | |
duke@435 | 661 | write_u2(attr_count); |
duke@435 | 662 | |
coleenp@2497 | 663 | if (generic_signature != NULL) { |
coleenp@2497 | 664 | write_signature_attribute(symbol_to_cpool_index(generic_signature)); |
duke@435 | 665 | } |
duke@435 | 666 | if (ikh()->source_file_name() != NULL) { |
duke@435 | 667 | write_source_file_attribute(); |
duke@435 | 668 | } |
duke@435 | 669 | if (ikh()->source_debug_extension() != NULL) { |
duke@435 | 670 | write_source_debug_extension_attribute(); |
duke@435 | 671 | } |
duke@435 | 672 | if (inner_classes_length > 0) { |
duke@435 | 673 | write_inner_classes_attribute(inner_classes_length); |
duke@435 | 674 | } |
coleenp@4037 | 675 | if (anno != NULL) { |
duke@435 | 676 | write_annotations_attribute("RuntimeVisibleAnnotations", anno); |
duke@435 | 677 | } |
aeriksso@7327 | 678 | if (type_anno != NULL) { |
aeriksso@7327 | 679 | write_annotations_attribute("RuntimeVisibleTypeAnnotations", type_anno); |
aeriksso@7327 | 680 | } |
sla@5058 | 681 | if (cpool()->operands() != NULL) { |
sla@5060 | 682 | write_bootstrapmethod_attribute(); |
sla@5058 | 683 | } |
duke@435 | 684 | } |
duke@435 | 685 | |
duke@435 | 686 | // Write the method information portion of ClassFile structure |
duke@435 | 687 | // JVMSpec| u2 methods_count; |
duke@435 | 688 | // JVMSpec| method_info methods[methods_count]; |
duke@435 | 689 | void JvmtiClassFileReconstituter::write_method_infos() { |
duke@435 | 690 | HandleMark hm(thread()); |
coleenp@4037 | 691 | Array<Method*>* methods = ikh()->methods(); |
duke@435 | 692 | int num_methods = methods->length(); |
sla@5045 | 693 | int num_overpass = 0; |
duke@435 | 694 | |
sla@5045 | 695 | // count the generated default interface methods |
sla@5045 | 696 | // these will not be re-created by write_method_info |
sla@5045 | 697 | // and should not be included in the total count |
sla@5045 | 698 | for (int index = 0; index < num_methods; index++) { |
sla@5045 | 699 | Method* method = methods->at(index); |
sla@5045 | 700 | if (method->is_overpass()) { |
sla@5045 | 701 | num_overpass++; |
sla@5045 | 702 | } |
sla@5045 | 703 | } |
sla@5045 | 704 | |
sla@5045 | 705 | write_u2(num_methods - num_overpass); |
duke@435 | 706 | if (JvmtiExport::can_maintain_original_method_order()) { |
duke@435 | 707 | int index; |
duke@435 | 708 | int original_index; |
coleenp@4037 | 709 | intArray method_order(num_methods, 0); |
duke@435 | 710 | |
duke@435 | 711 | // invert the method order mapping |
duke@435 | 712 | for (index = 0; index < num_methods; index++) { |
coleenp@4037 | 713 | original_index = ikh()->method_ordering()->at(index); |
duke@435 | 714 | assert(original_index >= 0 && original_index < num_methods, |
duke@435 | 715 | "invalid original method index"); |
coleenp@4037 | 716 | method_order.at_put(original_index, index); |
duke@435 | 717 | } |
duke@435 | 718 | |
duke@435 | 719 | // write in original order |
duke@435 | 720 | for (original_index = 0; original_index < num_methods; original_index++) { |
coleenp@4037 | 721 | index = method_order.at(original_index); |
coleenp@4037 | 722 | methodHandle method(thread(), methods->at(index)); |
duke@435 | 723 | write_method_info(method); |
duke@435 | 724 | } |
duke@435 | 725 | } else { |
duke@435 | 726 | // method order not preserved just dump the method infos |
duke@435 | 727 | for (int index = 0; index < num_methods; index++) { |
coleenp@4037 | 728 | methodHandle method(thread(), methods->at(index)); |
duke@435 | 729 | write_method_info(method); |
duke@435 | 730 | } |
duke@435 | 731 | } |
duke@435 | 732 | } |
duke@435 | 733 | |
duke@435 | 734 | void JvmtiClassFileReconstituter::write_class_file_format() { |
duke@435 | 735 | ReallocMark(); |
duke@435 | 736 | |
duke@435 | 737 | // JVMSpec| ClassFile { |
duke@435 | 738 | // JVMSpec| u4 magic; |
duke@435 | 739 | write_u4(0xCAFEBABE); |
duke@435 | 740 | |
duke@435 | 741 | // JVMSpec| u2 minor_version; |
duke@435 | 742 | // JVMSpec| u2 major_version; |
duke@435 | 743 | write_u2(ikh()->minor_version()); |
duke@435 | 744 | u2 major = ikh()->major_version(); |
duke@435 | 745 | write_u2(major); |
duke@435 | 746 | |
duke@435 | 747 | // JVMSpec| u2 constant_pool_count; |
duke@435 | 748 | // JVMSpec| cp_info constant_pool[constant_pool_count-1]; |
duke@435 | 749 | write_u2(cpool()->length()); |
duke@435 | 750 | copy_cpool_bytes(writeable_address(cpool_size())); |
duke@435 | 751 | |
duke@435 | 752 | // JVMSpec| u2 access_flags; |
duke@435 | 753 | write_u2(ikh()->access_flags().get_flags() & JVM_RECOGNIZED_CLASS_MODIFIERS); |
duke@435 | 754 | |
duke@435 | 755 | // JVMSpec| u2 this_class; |
duke@435 | 756 | // JVMSpec| u2 super_class; |
duke@435 | 757 | write_u2(class_symbol_to_cpool_index(ikh()->name())); |
coleenp@4037 | 758 | Klass* super_class = ikh()->super(); |
duke@435 | 759 | write_u2(super_class == NULL? 0 : // zero for java.lang.Object |
coleenp@4037 | 760 | class_symbol_to_cpool_index(super_class->name())); |
duke@435 | 761 | |
duke@435 | 762 | // JVMSpec| u2 interfaces_count; |
duke@435 | 763 | // JVMSpec| u2 interfaces[interfaces_count]; |
coleenp@4037 | 764 | Array<Klass*>* interfaces = ikh()->local_interfaces(); |
duke@435 | 765 | int num_interfaces = interfaces->length(); |
duke@435 | 766 | write_u2(num_interfaces); |
duke@435 | 767 | for (int index = 0; index < num_interfaces; index++) { |
duke@435 | 768 | HandleMark hm(thread()); |
coleenp@4037 | 769 | instanceKlassHandle iikh(thread(), interfaces->at(index)); |
duke@435 | 770 | write_u2(class_symbol_to_cpool_index(iikh->name())); |
duke@435 | 771 | } |
duke@435 | 772 | |
duke@435 | 773 | // JVMSpec| u2 fields_count; |
duke@435 | 774 | // JVMSpec| field_info fields[fields_count]; |
duke@435 | 775 | write_field_infos(); |
duke@435 | 776 | |
duke@435 | 777 | // JVMSpec| u2 methods_count; |
duke@435 | 778 | // JVMSpec| method_info methods[methods_count]; |
duke@435 | 779 | write_method_infos(); |
duke@435 | 780 | |
duke@435 | 781 | // JVMSpec| u2 attributes_count; |
duke@435 | 782 | // JVMSpec| attribute_info attributes[attributes_count]; |
duke@435 | 783 | // JVMSpec| } /* end ClassFile 8? |
duke@435 | 784 | write_class_attributes(); |
duke@435 | 785 | } |
duke@435 | 786 | |
duke@435 | 787 | address JvmtiClassFileReconstituter::writeable_address(size_t size) { |
duke@435 | 788 | size_t used_size = _buffer_ptr - _buffer; |
duke@435 | 789 | if (size + used_size >= _buffer_size) { |
duke@435 | 790 | // compute the new buffer size: must be at least twice as big as before |
duke@435 | 791 | // plus whatever new is being used; then convert to nice clean block boundary |
duke@435 | 792 | size_t new_buffer_size = (size + _buffer_size*2 + 1) / initial_buffer_size |
duke@435 | 793 | * initial_buffer_size; |
duke@435 | 794 | |
duke@435 | 795 | // VM goes belly-up if the memory isn't available, so cannot do OOM processing |
duke@435 | 796 | _buffer = REALLOC_RESOURCE_ARRAY(u1, _buffer, _buffer_size, new_buffer_size); |
duke@435 | 797 | _buffer_size = new_buffer_size; |
duke@435 | 798 | _buffer_ptr = _buffer + used_size; |
duke@435 | 799 | } |
duke@435 | 800 | u1* ret_ptr = _buffer_ptr; |
duke@435 | 801 | _buffer_ptr += size; |
duke@435 | 802 | return ret_ptr; |
duke@435 | 803 | } |
duke@435 | 804 | |
duke@435 | 805 | void JvmtiClassFileReconstituter::write_attribute_name_index(const char* name) { |
coleenp@2497 | 806 | TempNewSymbol sym = SymbolTable::probe(name, (int)strlen(name)); |
duke@435 | 807 | assert(sym != NULL, "attribute name symbol not found"); |
duke@435 | 808 | u2 attr_name_index = symbol_to_cpool_index(sym); |
duke@435 | 809 | assert(attr_name_index != 0, "attribute name symbol not in constant pool"); |
duke@435 | 810 | write_u2(attr_name_index); |
duke@435 | 811 | } |
duke@435 | 812 | |
duke@435 | 813 | void JvmtiClassFileReconstituter::write_u1(u1 x) { |
duke@435 | 814 | *writeable_address(1) = x; |
duke@435 | 815 | } |
duke@435 | 816 | |
duke@435 | 817 | void JvmtiClassFileReconstituter::write_u2(u2 x) { |
duke@435 | 818 | Bytes::put_Java_u2(writeable_address(2), x); |
duke@435 | 819 | } |
duke@435 | 820 | |
duke@435 | 821 | void JvmtiClassFileReconstituter::write_u4(u4 x) { |
duke@435 | 822 | Bytes::put_Java_u4(writeable_address(4), x); |
duke@435 | 823 | } |
duke@435 | 824 | |
duke@435 | 825 | void JvmtiClassFileReconstituter::write_u8(u8 x) { |
duke@435 | 826 | Bytes::put_Java_u8(writeable_address(8), x); |
duke@435 | 827 | } |
duke@435 | 828 | |
duke@435 | 829 | void JvmtiClassFileReconstituter::copy_bytecodes(methodHandle mh, |
duke@435 | 830 | unsigned char* bytecodes) { |
duke@435 | 831 | // use a BytecodeStream to iterate over the bytecodes. JVM/fast bytecodes |
duke@435 | 832 | // and the breakpoint bytecode are converted to their original bytecodes. |
duke@435 | 833 | |
duke@435 | 834 | BytecodeStream bs(mh); |
duke@435 | 835 | |
duke@435 | 836 | unsigned char* p = bytecodes; |
duke@435 | 837 | Bytecodes::Code code; |
coleenp@4251 | 838 | bool is_rewritten = mh->method_holder()->is_rewritten(); |
duke@435 | 839 | |
duke@435 | 840 | while ((code = bs.next()) >= 0) { |
duke@435 | 841 | assert(Bytecodes::is_java_code(code), "sanity check"); |
duke@435 | 842 | assert(code != Bytecodes::_breakpoint, "sanity check"); |
duke@435 | 843 | |
duke@435 | 844 | // length of bytecode (mnemonic + operands) |
duke@435 | 845 | address bcp = bs.bcp(); |
jrose@1920 | 846 | int len = bs.instruction_size(); |
duke@435 | 847 | assert(len > 0, "length must be > 0"); |
duke@435 | 848 | |
duke@435 | 849 | // copy the bytecodes |
duke@435 | 850 | *p = (unsigned char) (bs.is_wide()? Bytecodes::_wide : code); |
duke@435 | 851 | if (len > 1) { |
duke@435 | 852 | memcpy(p+1, bcp+1, len-1); |
duke@435 | 853 | } |
duke@435 | 854 | |
duke@435 | 855 | // During linking the get/put and invoke instructions are rewritten |
duke@435 | 856 | // with an index into the constant pool cache. The original constant |
duke@435 | 857 | // pool index must be returned to caller. Rewrite the index. |
coleenp@4037 | 858 | if (is_rewritten && len > 1) { |
coleenp@4037 | 859 | bool is_wide = false; |
duke@435 | 860 | switch (code) { |
duke@435 | 861 | case Bytecodes::_getstatic : // fall through |
duke@435 | 862 | case Bytecodes::_putstatic : // fall through |
duke@435 | 863 | case Bytecodes::_getfield : // fall through |
duke@435 | 864 | case Bytecodes::_putfield : // fall through |
duke@435 | 865 | case Bytecodes::_invokevirtual : // fall through |
duke@435 | 866 | case Bytecodes::_invokespecial : // fall through |
duke@435 | 867 | case Bytecodes::_invokestatic : // fall through |
jrose@1161 | 868 | case Bytecodes::_invokedynamic : // fall through |
coleenp@4037 | 869 | case Bytecodes::_invokeinterface : { |
dsamersoff@3626 | 870 | assert(len == 3 || |
dsamersoff@3626 | 871 | (code == Bytecodes::_invokeinterface && len == 5) || |
dsamersoff@3626 | 872 | (code == Bytecodes::_invokedynamic && len == 5), |
duke@435 | 873 | "sanity check"); |
dsamersoff@3626 | 874 | |
jrose@1161 | 875 | int cpci = Bytes::get_native_u2(bcp+1); |
jrose@1161 | 876 | bool is_invokedynamic = (EnableInvokeDynamic && code == Bytecodes::_invokedynamic); |
coleenp@4037 | 877 | ConstantPoolCacheEntry* entry; |
coleenp@4037 | 878 | if (is_invokedynamic) { |
jrose@1161 | 879 | cpci = Bytes::get_native_u4(bcp+1); |
coleenp@4037 | 880 | entry = mh->constants()->invokedynamic_cp_cache_entry_at(cpci); |
coleenp@4037 | 881 | } else { |
duke@435 | 882 | // cache cannot be pre-fetched since some classes won't have it yet |
coleenp@4037 | 883 | entry = mh->constants()->cache()->entry_at(cpci); |
coleenp@4037 | 884 | } |
duke@435 | 885 | int i = entry->constant_pool_index(); |
duke@435 | 886 | assert(i < mh->constants()->length(), "sanity check"); |
duke@435 | 887 | Bytes::put_Java_u2((address)(p+1), (u2)i); // java byte ordering |
jrose@1161 | 888 | if (is_invokedynamic) *(p+3) = *(p+4) = 0; |
duke@435 | 889 | break; |
duke@435 | 890 | } |
coleenp@4037 | 891 | case Bytecodes::_ldc_w: |
coleenp@4037 | 892 | is_wide = true; // fall through |
coleenp@4037 | 893 | case Bytecodes::_ldc: { |
coleenp@4037 | 894 | if (bs.raw_code() == Bytecodes::_fast_aldc || bs.raw_code() == Bytecodes::_fast_aldc_w) { |
coleenp@4037 | 895 | int cpci = is_wide ? Bytes::get_native_u2(bcp+1) : (u1)(*(bcp+1)); |
coleenp@4037 | 896 | int i = mh->constants()->object_to_cp_index(cpci); |
coleenp@4037 | 897 | assert(i < mh->constants()->length(), "sanity check"); |
coleenp@4037 | 898 | if (is_wide) { |
coleenp@4037 | 899 | Bytes::put_Java_u2((address)(p+1), (u2)i); // java byte ordering |
coleenp@4037 | 900 | } else { |
coleenp@4037 | 901 | *(p+1) = (u1)i; |
coleenp@4037 | 902 | } |
coleenp@4037 | 903 | } |
coleenp@4037 | 904 | break; |
coleenp@4037 | 905 | } |
coleenp@4037 | 906 | } |
duke@435 | 907 | } |
duke@435 | 908 | |
duke@435 | 909 | p += len; |
duke@435 | 910 | } |
duke@435 | 911 | } |