Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiClassFileReconstituter.cpp @ 21791:cd36556e1b78
Remove conditional makefile-based compilation of jvmci from mx_graal.py
author | Stefan Anzinger <stefan.anzinger@oracle.com> |
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date | Mon, 08 Jun 2015 14:25:25 +0200 |
parents | 7848fc12602b |
children |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/symbolTable.hpp" | |
27 #include "interpreter/bytecodeStream.hpp" | |
3938 | 28 #include "oops/fieldStreams.hpp" |
1972 | 29 #include "prims/jvmtiClassFileReconstituter.hpp" |
30 #include "runtime/signature.hpp" | |
31 #ifdef TARGET_ARCH_x86 | |
32 # include "bytes_x86.hpp" | |
33 #endif | |
34 #ifdef TARGET_ARCH_sparc | |
35 # include "bytes_sparc.hpp" | |
36 #endif | |
37 #ifdef TARGET_ARCH_zero | |
38 # include "bytes_zero.hpp" | |
39 #endif | |
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40 #ifdef TARGET_ARCH_arm |
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41 # include "bytes_arm.hpp" |
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42 #endif |
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43 #ifdef TARGET_ARCH_ppc |
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44 # include "bytes_ppc.hpp" |
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45 #endif |
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46 // FIXME: add Deprecated attribute |
0 | 47 // FIXME: fix Synthetic attribute |
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48 // FIXME: per Serguei, add error return handling for ConstantPool::copy_cpool_bytes() |
0 | 49 |
50 | |
51 // Write the field information portion of ClassFile structure | |
52 // JVMSpec| u2 fields_count; | |
53 // JVMSpec| field_info fields[fields_count]; | |
54 void JvmtiClassFileReconstituter::write_field_infos() { | |
55 HandleMark hm(thread()); | |
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56 Array<AnnotationArray*>* fields_anno = ikh()->fields_annotations(); |
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57 Array<AnnotationArray*>* fields_type_anno = ikh()->fields_type_annotations(); |
0 | 58 |
3938 | 59 // Compute the real number of Java fields |
60 int java_fields = ikh()->java_fields_count(); | |
61 | |
3944 | 62 write_u2(java_fields); |
3938 | 63 for (JavaFieldStream fs(ikh()); !fs.done(); fs.next()) { |
64 AccessFlags access_flags = fs.access_flags(); | |
65 int name_index = fs.name_index(); | |
66 int signature_index = fs.signature_index(); | |
67 int initial_value_index = fs.initval_index(); | |
0 | 68 guarantee(name_index != 0 && signature_index != 0, "bad constant pool index for field"); |
3938 | 69 // int offset = ikh()->field_offset( index ); |
70 int generic_signature_index = fs.generic_signature_index(); | |
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71 AnnotationArray* anno = fields_anno == NULL ? NULL : fields_anno->at(fs.index()); |
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72 AnnotationArray* type_anno = fields_type_anno == NULL ? NULL : fields_type_anno->at(fs.index()); |
0 | 73 |
74 // JVMSpec| field_info { | |
75 // JVMSpec| u2 access_flags; | |
76 // JVMSpec| u2 name_index; | |
77 // JVMSpec| u2 descriptor_index; | |
78 // JVMSpec| u2 attributes_count; | |
79 // JVMSpec| attribute_info attributes[attributes_count]; | |
80 // JVMSpec| } | |
81 | |
3938 | 82 write_u2(access_flags.as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS); |
0 | 83 write_u2(name_index); |
84 write_u2(signature_index); | |
85 int attr_count = 0; | |
86 if (initial_value_index != 0) { | |
87 ++attr_count; | |
88 } | |
89 if (access_flags.is_synthetic()) { | |
90 // ++attr_count; | |
91 } | |
92 if (generic_signature_index != 0) { | |
93 ++attr_count; | |
94 } | |
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95 if (anno != NULL) { |
0 | 96 ++attr_count; // has RuntimeVisibleAnnotations attribute |
97 } | |
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98 if (type_anno != NULL) { |
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99 ++attr_count; // has RuntimeVisibleTypeAnnotations attribute |
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100 } |
0 | 101 |
102 write_u2(attr_count); | |
103 | |
104 if (initial_value_index != 0) { | |
105 write_attribute_name_index("ConstantValue"); | |
106 write_u4(2); //length always 2 | |
107 write_u2(initial_value_index); | |
108 } | |
109 if (access_flags.is_synthetic()) { | |
110 // write_synthetic_attribute(); | |
111 } | |
112 if (generic_signature_index != 0) { | |
113 write_signature_attribute(generic_signature_index); | |
114 } | |
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115 if (anno != NULL) { |
0 | 116 write_annotations_attribute("RuntimeVisibleAnnotations", anno); |
117 } | |
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118 if (type_anno != NULL) { |
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119 write_annotations_attribute("RuntimeVisibleTypeAnnotations", type_anno); |
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120 } |
0 | 121 } |
122 } | |
123 | |
124 // Write Code attribute | |
125 // JVMSpec| Code_attribute { | |
126 // JVMSpec| u2 attribute_name_index; | |
127 // JVMSpec| u4 attribute_length; | |
128 // JVMSpec| u2 max_stack; | |
129 // JVMSpec| u2 max_locals; | |
130 // JVMSpec| u4 code_length; | |
131 // JVMSpec| u1 code[code_length]; | |
132 // JVMSpec| u2 exception_table_length; | |
133 // JVMSpec| { u2 start_pc; | |
134 // JVMSpec| u2 end_pc; | |
135 // JVMSpec| u2 handler_pc; | |
136 // JVMSpec| u2 catch_type; | |
137 // JVMSpec| } exception_table[exception_table_length]; | |
138 // JVMSpec| u2 attributes_count; | |
139 // JVMSpec| attribute_info attributes[attributes_count]; | |
140 // JVMSpec| } | |
141 void JvmtiClassFileReconstituter::write_code_attribute(methodHandle method) { | |
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142 ConstMethod* const_method = method->constMethod(); |
0 | 143 u2 line_num_cnt = 0; |
144 int stackmap_len = 0; | |
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145 int local_variable_table_length = 0; |
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146 int local_variable_type_table_length = 0; |
0 | 147 |
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148 // compute number and length of attributes |
0 | 149 int attr_count = 0; |
150 int attr_size = 0; | |
151 if (const_method->has_linenumber_table()) { | |
152 line_num_cnt = line_number_table_entries(method); | |
153 if (line_num_cnt != 0) { | |
154 ++attr_count; | |
155 // Compute the complete size of the line number table attribute: | |
156 // LineNumberTable_attribute { | |
157 // u2 attribute_name_index; | |
158 // u4 attribute_length; | |
159 // u2 line_number_table_length; | |
160 // { u2 start_pc; | |
161 // u2 line_number; | |
162 // } line_number_table[line_number_table_length]; | |
163 // } | |
164 attr_size += 2 + 4 + 2 + line_num_cnt * (2 + 2); | |
165 } | |
166 } | |
167 if (method->has_stackmap_table()) { | |
168 stackmap_len = method->stackmap_data()->length(); | |
169 if (stackmap_len != 0) { | |
170 ++attr_count; | |
171 // Compute the size of the stack map table attribute (VM stores raw): | |
172 // StackMapTable_attribute { | |
173 // u2 attribute_name_index; | |
174 // u4 attribute_length; | |
175 // u2 number_of_entries; | |
176 // stack_map_frame_entries[number_of_entries]; | |
177 // } | |
178 attr_size += 2 + 4 + stackmap_len; | |
179 } | |
180 } | |
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181 if (method->has_localvariable_table()) { |
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182 local_variable_table_length = method->localvariable_table_length(); |
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183 if (local_variable_table_length != 0) { |
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184 ++attr_count; |
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185 // Compute the size of the local variable table attribute (VM stores raw): |
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186 // LocalVariableTable_attribute { |
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187 // u2 attribute_name_index; |
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188 // u4 attribute_length; |
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189 // u2 local_variable_table_length; |
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190 // { |
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191 // u2 start_pc; |
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192 // u2 length; |
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193 // u2 name_index; |
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194 // u2 descriptor_index; |
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195 // u2 index; |
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196 // } |
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197 attr_size += 2 + 4 + 2 + local_variable_table_length * (2 + 2 + 2 + 2 + 2); |
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198 |
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199 // Local variables with generic signatures must have LVTT entries |
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200 LocalVariableTableElement *elem = method->localvariable_table_start(); |
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201 for (int idx = 0; idx < local_variable_table_length; idx++) { |
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202 if (elem[idx].signature_cp_index != 0) { |
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203 local_variable_type_table_length++; |
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204 } |
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205 } |
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206 |
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207 if (local_variable_type_table_length != 0) { |
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208 ++attr_count; |
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209 // Compute the size of the local variable type table attribute (VM stores raw): |
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210 // LocalVariableTypeTable_attribute { |
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211 // u2 attribute_name_index; |
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212 // u4 attribute_length; |
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213 // u2 local_variable_type_table_length; |
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214 // { |
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215 // u2 start_pc; |
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216 // u2 length; |
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217 // u2 name_index; |
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218 // u2 signature_index; |
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219 // u2 index; |
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220 // } |
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221 attr_size += 2 + 4 + 2 + local_variable_type_table_length * (2 + 2 + 2 + 2 + 2); |
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222 } |
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223 } |
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224 } |
0 | 225 |
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226 ExceptionTable exception_table(method()); |
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227 int exception_table_length = exception_table.length(); |
0 | 228 int code_size = const_method->code_size(); |
229 int size = | |
230 2+2+4 + // max_stack, max_locals, code_length | |
231 code_size + // code | |
232 2 + // exception_table_length | |
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233 (2+2+2+2) * exception_table_length + // exception_table |
0 | 234 2 + // attributes_count |
235 attr_size; // attributes | |
236 | |
237 write_attribute_name_index("Code"); | |
238 write_u4(size); | |
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239 write_u2(method->verifier_max_stack()); |
0 | 240 write_u2(method->max_locals()); |
241 write_u4(code_size); | |
242 copy_bytecodes(method, (unsigned char*)writeable_address(code_size)); | |
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243 write_u2(exception_table_length); |
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244 for (int index = 0; index < exception_table_length; index++) { |
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245 write_u2(exception_table.start_pc(index)); |
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246 write_u2(exception_table.end_pc(index)); |
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247 write_u2(exception_table.handler_pc(index)); |
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248 write_u2(exception_table.catch_type_index(index)); |
0 | 249 } |
250 write_u2(attr_count); | |
251 if (line_num_cnt != 0) { | |
252 write_line_number_table_attribute(method, line_num_cnt); | |
253 } | |
254 if (stackmap_len != 0) { | |
255 write_stackmap_table_attribute(method, stackmap_len); | |
256 } | |
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257 if (local_variable_table_length != 0) { |
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258 write_local_variable_table_attribute(method, local_variable_table_length); |
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259 } |
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260 if (local_variable_type_table_length != 0) { |
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261 write_local_variable_type_table_attribute(method, local_variable_type_table_length); |
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262 } |
0 | 263 } |
264 | |
265 // Write Exceptions attribute | |
266 // JVMSpec| Exceptions_attribute { | |
267 // JVMSpec| u2 attribute_name_index; | |
268 // JVMSpec| u4 attribute_length; | |
269 // JVMSpec| u2 number_of_exceptions; | |
270 // JVMSpec| u2 exception_index_table[number_of_exceptions]; | |
271 // JVMSpec| } | |
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272 void JvmtiClassFileReconstituter::write_exceptions_attribute(ConstMethod* const_method) { |
0 | 273 CheckedExceptionElement* checked_exceptions = const_method->checked_exceptions_start(); |
274 int checked_exceptions_length = const_method->checked_exceptions_length(); | |
275 int size = | |
276 2 + // number_of_exceptions | |
277 2 * checked_exceptions_length; // exception_index_table | |
278 | |
279 write_attribute_name_index("Exceptions"); | |
280 write_u4(size); | |
281 write_u2(checked_exceptions_length); | |
282 for (int index = 0; index < checked_exceptions_length; index++) { | |
283 write_u2(checked_exceptions[index].class_cp_index); | |
284 } | |
285 } | |
286 | |
287 // Write SourceFile attribute | |
288 // JVMSpec| SourceFile_attribute { | |
289 // JVMSpec| u2 attribute_name_index; | |
290 // JVMSpec| u4 attribute_length; | |
291 // JVMSpec| u2 sourcefile_index; | |
292 // JVMSpec| } | |
293 void JvmtiClassFileReconstituter::write_source_file_attribute() { | |
294 assert(ikh()->source_file_name() != NULL, "caller must check"); | |
295 | |
296 write_attribute_name_index("SourceFile"); | |
297 write_u4(2); // always length 2 | |
298 write_u2(symbol_to_cpool_index(ikh()->source_file_name())); | |
299 } | |
300 | |
301 // Write SourceDebugExtension attribute | |
302 // JSR45| SourceDebugExtension_attribute { | |
303 // JSR45| u2 attribute_name_index; | |
304 // JSR45| u4 attribute_length; | |
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305 // JSR45| u1 debug_extension[attribute_length]; |
0 | 306 // JSR45| } |
307 void JvmtiClassFileReconstituter::write_source_debug_extension_attribute() { | |
308 assert(ikh()->source_debug_extension() != NULL, "caller must check"); | |
309 | |
310 write_attribute_name_index("SourceDebugExtension"); | |
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311 int len = (int)strlen(ikh()->source_debug_extension()); |
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312 write_u4(len); |
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313 u1* ext = (u1*)ikh()->source_debug_extension(); |
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314 for (int i=0; i<len; i++) { |
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315 write_u1(ext[i]); |
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316 } |
0 | 317 } |
318 | |
319 // Write (generic) Signature attribute | |
320 // JVMSpec| Signature_attribute { | |
321 // JVMSpec| u2 attribute_name_index; | |
322 // JVMSpec| u4 attribute_length; | |
323 // JVMSpec| u2 signature_index; | |
324 // JVMSpec| } | |
325 void JvmtiClassFileReconstituter::write_signature_attribute(u2 generic_signature_index) { | |
326 write_attribute_name_index("Signature"); | |
327 write_u4(2); // always length 2 | |
328 write_u2(generic_signature_index); | |
329 } | |
330 | |
331 // Compute the number of entries in the InnerClasses attribute | |
332 u2 JvmtiClassFileReconstituter::inner_classes_attribute_length() { | |
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333 InnerClassesIterator iter(ikh()); |
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334 return iter.length(); |
0 | 335 } |
336 | |
337 // Write an annotation attribute. The VM stores them in raw form, so all we need | |
338 // to do is add the attrubute name and fill in the length. | |
339 // JSR202| *Annotations_attribute { | |
340 // JSR202| u2 attribute_name_index; | |
341 // JSR202| u4 attribute_length; | |
342 // JSR202| ... | |
343 // JSR202| } | |
344 void JvmtiClassFileReconstituter::write_annotations_attribute(const char* attr_name, | |
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345 AnnotationArray* annos) { |
0 | 346 u4 length = annos->length(); |
347 write_attribute_name_index(attr_name); | |
348 write_u4(length); | |
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349 memcpy(writeable_address(length), annos->adr_at(0), length); |
0 | 350 } |
351 | |
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352 // BootstrapMethods_attribute { |
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353 // u2 attribute_name_index; |
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354 // u4 attribute_length; |
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355 // u2 num_bootstrap_methods; |
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356 // { u2 bootstrap_method_ref; |
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357 // u2 num_bootstrap_arguments; |
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358 // u2 bootstrap_arguments[num_bootstrap_arguments]; |
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359 // } bootstrap_methods[num_bootstrap_methods]; |
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360 // } |
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361 void JvmtiClassFileReconstituter::write_bootstrapmethod_attribute() { |
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362 Array<u2>* operands = cpool()->operands(); |
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363 write_attribute_name_index("BootstrapMethods"); |
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364 int num_bootstrap_methods = ConstantPool::operand_array_length(operands); |
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365 |
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366 // calculate length of attribute |
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367 int length = sizeof(u2); // num_bootstrap_methods |
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368 for (int n = 0; n < num_bootstrap_methods; n++) { |
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369 u2 num_bootstrap_arguments = cpool()->operand_argument_count_at(n); |
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370 length += sizeof(u2); // bootstrap_method_ref |
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371 length += sizeof(u2); // num_bootstrap_arguments |
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372 length += sizeof(u2) * num_bootstrap_arguments; // bootstrap_arguments[num_bootstrap_arguments] |
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373 } |
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374 write_u4(length); |
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375 |
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376 // write attribute |
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377 write_u2(num_bootstrap_methods); |
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378 for (int n = 0; n < num_bootstrap_methods; n++) { |
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379 u2 bootstrap_method_ref = cpool()->operand_bootstrap_method_ref_index_at(n); |
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380 u2 num_bootstrap_arguments = cpool()->operand_argument_count_at(n); |
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381 write_u2(bootstrap_method_ref); |
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382 write_u2(num_bootstrap_arguments); |
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383 for (int arg = 0; arg < num_bootstrap_arguments; arg++) { |
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384 u2 bootstrap_argument = cpool()->operand_argument_index_at(n, arg); |
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385 write_u2(bootstrap_argument); |
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386 } |
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387 } |
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388 } |
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389 |
0 | 390 |
391 // Write InnerClasses attribute | |
392 // JVMSpec| InnerClasses_attribute { | |
393 // JVMSpec| u2 attribute_name_index; | |
394 // JVMSpec| u4 attribute_length; | |
395 // JVMSpec| u2 number_of_classes; | |
396 // JVMSpec| { u2 inner_class_info_index; | |
397 // JVMSpec| u2 outer_class_info_index; | |
398 // JVMSpec| u2 inner_name_index; | |
399 // JVMSpec| u2 inner_class_access_flags; | |
400 // JVMSpec| } classes[number_of_classes]; | |
401 // JVMSpec| } | |
402 void JvmtiClassFileReconstituter::write_inner_classes_attribute(int length) { | |
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403 InnerClassesIterator iter(ikh()); |
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404 guarantee(iter.length() != 0 && iter.length() == length, |
0 | 405 "caller must check"); |
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406 u2 entry_count = length / InstanceKlass::inner_class_next_offset; |
0 | 407 u4 size = 2 + entry_count * (2+2+2+2); |
408 | |
409 write_attribute_name_index("InnerClasses"); | |
410 write_u4(size); | |
411 write_u2(entry_count); | |
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412 for (; !iter.done(); iter.next()) { |
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413 write_u2(iter.inner_class_info_index()); |
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414 write_u2(iter.outer_class_info_index()); |
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415 write_u2(iter.inner_name_index()); |
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416 write_u2(iter.inner_access_flags()); |
0 | 417 } |
418 } | |
419 | |
420 // Write Synthetic attribute | |
421 // JVMSpec| Synthetic_attribute { | |
422 // JVMSpec| u2 attribute_name_index; | |
423 // JVMSpec| u4 attribute_length; | |
424 // JVMSpec| } | |
425 void JvmtiClassFileReconstituter::write_synthetic_attribute() { | |
426 write_attribute_name_index("Synthetic"); | |
427 write_u4(0); //length always zero | |
428 } | |
429 | |
430 // Compute size of LineNumberTable | |
431 u2 JvmtiClassFileReconstituter::line_number_table_entries(methodHandle method) { | |
432 // The line number table is compressed so we don't know how big it is until decompressed. | |
433 // Decompression is really fast so we just do it twice. | |
434 u2 num_entries = 0; | |
435 CompressedLineNumberReadStream stream(method->compressed_linenumber_table()); | |
436 while (stream.read_pair()) { | |
437 num_entries++; | |
438 } | |
439 return num_entries; | |
440 } | |
441 | |
442 // Write LineNumberTable attribute | |
443 // JVMSpec| LineNumberTable_attribute { | |
444 // JVMSpec| u2 attribute_name_index; | |
445 // JVMSpec| u4 attribute_length; | |
446 // JVMSpec| u2 line_number_table_length; | |
447 // JVMSpec| { u2 start_pc; | |
448 // JVMSpec| u2 line_number; | |
449 // JVMSpec| } line_number_table[line_number_table_length]; | |
450 // JVMSpec| } | |
451 void JvmtiClassFileReconstituter::write_line_number_table_attribute(methodHandle method, | |
452 u2 num_entries) { | |
453 | |
454 write_attribute_name_index("LineNumberTable"); | |
455 write_u4(2 + num_entries * (2 + 2)); | |
456 write_u2(num_entries); | |
457 | |
458 CompressedLineNumberReadStream stream(method->compressed_linenumber_table()); | |
459 while (stream.read_pair()) { | |
460 write_u2(stream.bci()); | |
461 write_u2(stream.line()); | |
462 } | |
463 } | |
464 | |
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465 // Write LocalVariableTable attribute |
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466 // JVMSpec| LocalVariableTable_attribute { |
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467 // JVMSpec| u2 attribute_name_index; |
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468 // JVMSpec| u4 attribute_length; |
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469 // JVMSpec| u2 local_variable_table_length; |
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470 // JVMSpec| { u2 start_pc; |
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471 // JVMSpec| u2 length; |
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472 // JVMSpec| u2 name_index; |
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473 // JVMSpec| u2 descriptor_index; |
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474 // JVMSpec| u2 index; |
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475 // JVMSpec| } local_variable_table[local_variable_table_length]; |
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476 // JVMSpec| } |
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477 void JvmtiClassFileReconstituter::write_local_variable_table_attribute(methodHandle method, u2 num_entries) { |
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478 write_attribute_name_index("LocalVariableTable"); |
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479 write_u4(2 + num_entries * (2 + 2 + 2 + 2 + 2)); |
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480 write_u2(num_entries); |
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481 |
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482 assert(method->localvariable_table_length() == num_entries, "just checking"); |
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483 |
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484 LocalVariableTableElement *elem = method->localvariable_table_start(); |
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485 for (int j=0; j<method->localvariable_table_length(); j++) { |
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486 write_u2(elem->start_bci); |
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487 write_u2(elem->length); |
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488 write_u2(elem->name_cp_index); |
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489 write_u2(elem->descriptor_cp_index); |
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490 write_u2(elem->slot); |
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491 elem++; |
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492 } |
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493 } |
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494 |
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495 // Write LocalVariableTypeTable attribute |
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496 // JVMSpec| LocalVariableTypeTable_attribute { |
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497 // JVMSpec| u2 attribute_name_index; |
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498 // JVMSpec| u4 attribute_length; |
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499 // JVMSpec| u2 local_variable_type_table_length; |
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500 // JVMSpec| { u2 start_pc; |
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501 // JVMSpec| u2 length; |
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502 // JVMSpec| u2 name_index; |
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503 // JVMSpec| u2 signature_index; |
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504 // JVMSpec| u2 index; |
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505 // JVMSpec| } local_variable_type_table[local_variable_type_table_length]; |
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506 // JVMSpec| } |
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507 void JvmtiClassFileReconstituter::write_local_variable_type_table_attribute(methodHandle method, u2 num_entries) { |
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508 write_attribute_name_index("LocalVariableTypeTable"); |
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509 write_u4(2 + num_entries * (2 + 2 + 2 + 2 + 2)); |
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510 write_u2(num_entries); |
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511 |
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512 LocalVariableTableElement *elem = method->localvariable_table_start(); |
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513 for (int j=0; j<method->localvariable_table_length(); j++) { |
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514 if (elem->signature_cp_index > 0) { |
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515 // Local variable has a generic signature - write LVTT attribute entry |
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516 write_u2(elem->start_bci); |
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517 write_u2(elem->length); |
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518 write_u2(elem->name_cp_index); |
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519 write_u2(elem->signature_cp_index); |
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520 write_u2(elem->slot); |
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521 num_entries--; |
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522 } |
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523 elem++; |
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524 } |
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525 assert(num_entries == 0, "just checking"); |
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526 } |
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527 |
0 | 528 // Write stack map table attribute |
529 // JSR-202| StackMapTable_attribute { | |
530 // JSR-202| u2 attribute_name_index; | |
531 // JSR-202| u4 attribute_length; | |
532 // JSR-202| u2 number_of_entries; | |
533 // JSR-202| stack_map_frame_entries[number_of_entries]; | |
534 // JSR-202| } | |
535 void JvmtiClassFileReconstituter::write_stackmap_table_attribute(methodHandle method, | |
536 int stackmap_len) { | |
537 | |
538 write_attribute_name_index("StackMapTable"); | |
539 write_u4(stackmap_len); | |
540 memcpy( | |
541 writeable_address(stackmap_len), | |
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542 (void*)(method->stackmap_data()->adr_at(0)), |
0 | 543 stackmap_len); |
544 } | |
545 | |
546 // Write one method_info structure | |
547 // JVMSpec| method_info { | |
548 // JVMSpec| u2 access_flags; | |
549 // JVMSpec| u2 name_index; | |
550 // JVMSpec| u2 descriptor_index; | |
551 // JVMSpec| u2 attributes_count; | |
552 // JVMSpec| attribute_info attributes[attributes_count]; | |
553 // JVMSpec| } | |
554 void JvmtiClassFileReconstituter::write_method_info(methodHandle method) { | |
555 AccessFlags access_flags = method->access_flags(); | |
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556 ConstMethod* const_method = method->constMethod(); |
0 | 557 u2 generic_signature_index = const_method->generic_signature_index(); |
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558 AnnotationArray* anno = method->annotations(); |
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559 AnnotationArray* param_anno = method->parameter_annotations(); |
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560 AnnotationArray* default_anno = method->annotation_default(); |
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561 AnnotationArray* type_anno = method->type_annotations(); |
0 | 562 |
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563 // skip generated default interface methods |
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564 if (method->is_overpass()) { |
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565 return; |
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566 } |
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567 |
0 | 568 write_u2(access_flags.get_flags() & JVM_RECOGNIZED_METHOD_MODIFIERS); |
569 write_u2(const_method->name_index()); | |
570 write_u2(const_method->signature_index()); | |
571 | |
572 // write attributes in the same order javac does, so we can test with byte for | |
573 // byte comparison | |
574 int attr_count = 0; | |
575 if (const_method->code_size() != 0) { | |
576 ++attr_count; // has Code attribute | |
577 } | |
578 if (const_method->has_checked_exceptions()) { | |
579 ++attr_count; // has Exceptions attribute | |
580 } | |
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581 if (default_anno != NULL) { |
0 | 582 ++attr_count; // has AnnotationDefault attribute |
583 } | |
584 // Deprecated attribute would go here | |
585 if (access_flags.is_synthetic()) { // FIXME | |
586 // ++attr_count; | |
587 } | |
588 if (generic_signature_index != 0) { | |
589 ++attr_count; | |
590 } | |
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591 if (anno != NULL) { |
0 | 592 ++attr_count; // has RuntimeVisibleAnnotations attribute |
593 } | |
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594 if (param_anno != NULL) { |
0 | 595 ++attr_count; // has RuntimeVisibleParameterAnnotations attribute |
596 } | |
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597 if (type_anno != NULL) { |
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598 ++attr_count; // has RuntimeVisibleTypeAnnotations attribute |
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599 } |
0 | 600 |
601 write_u2(attr_count); | |
602 if (const_method->code_size() > 0) { | |
603 write_code_attribute(method); | |
604 } | |
605 if (const_method->has_checked_exceptions()) { | |
606 write_exceptions_attribute(const_method); | |
607 } | |
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608 if (default_anno != NULL) { |
0 | 609 write_annotations_attribute("AnnotationDefault", default_anno); |
610 } | |
611 // Deprecated attribute would go here | |
612 if (access_flags.is_synthetic()) { | |
613 // write_synthetic_attribute(); | |
614 } | |
615 if (generic_signature_index != 0) { | |
616 write_signature_attribute(generic_signature_index); | |
617 } | |
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618 if (anno != NULL) { |
0 | 619 write_annotations_attribute("RuntimeVisibleAnnotations", anno); |
620 } | |
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621 if (param_anno != NULL) { |
0 | 622 write_annotations_attribute("RuntimeVisibleParameterAnnotations", param_anno); |
623 } | |
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624 if (type_anno != NULL) { |
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625 write_annotations_attribute("RuntimeVisibleTypeAnnotations", type_anno); |
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626 } |
0 | 627 } |
628 | |
629 // Write the class attributes portion of ClassFile structure | |
630 // JVMSpec| u2 attributes_count; | |
631 // JVMSpec| attribute_info attributes[attributes_count]; | |
632 void JvmtiClassFileReconstituter::write_class_attributes() { | |
633 u2 inner_classes_length = inner_classes_attribute_length(); | |
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634 Symbol* generic_signature = ikh()->generic_signature(); |
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635 AnnotationArray* anno = ikh()->class_annotations(); |
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636 AnnotationArray* type_anno = ikh()->class_type_annotations(); |
0 | 637 |
638 int attr_count = 0; | |
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639 if (generic_signature != NULL) { |
0 | 640 ++attr_count; |
641 } | |
642 if (ikh()->source_file_name() != NULL) { | |
643 ++attr_count; | |
644 } | |
645 if (ikh()->source_debug_extension() != NULL) { | |
646 ++attr_count; | |
647 } | |
648 if (inner_classes_length > 0) { | |
649 ++attr_count; | |
650 } | |
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651 if (anno != NULL) { |
0 | 652 ++attr_count; // has RuntimeVisibleAnnotations attribute |
653 } | |
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654 if (type_anno != NULL) { |
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655 ++attr_count; // has RuntimeVisibleTypeAnnotations attribute |
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656 } |
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657 if (cpool()->operands() != NULL) { |
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658 ++attr_count; |
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659 } |
0 | 660 |
661 write_u2(attr_count); | |
662 | |
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663 if (generic_signature != NULL) { |
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664 write_signature_attribute(symbol_to_cpool_index(generic_signature)); |
0 | 665 } |
666 if (ikh()->source_file_name() != NULL) { | |
667 write_source_file_attribute(); | |
668 } | |
669 if (ikh()->source_debug_extension() != NULL) { | |
670 write_source_debug_extension_attribute(); | |
671 } | |
672 if (inner_classes_length > 0) { | |
673 write_inner_classes_attribute(inner_classes_length); | |
674 } | |
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675 if (anno != NULL) { |
0 | 676 write_annotations_attribute("RuntimeVisibleAnnotations", anno); |
677 } | |
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678 if (type_anno != NULL) { |
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679 write_annotations_attribute("RuntimeVisibleTypeAnnotations", type_anno); |
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680 } |
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681 if (cpool()->operands() != NULL) { |
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682 write_bootstrapmethod_attribute(); |
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683 } |
0 | 684 } |
685 | |
686 // Write the method information portion of ClassFile structure | |
687 // JVMSpec| u2 methods_count; | |
688 // JVMSpec| method_info methods[methods_count]; | |
689 void JvmtiClassFileReconstituter::write_method_infos() { | |
690 HandleMark hm(thread()); | |
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691 Array<Method*>* methods = ikh()->methods(); |
0 | 692 int num_methods = methods->length(); |
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693 int num_overpass = 0; |
0 | 694 |
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695 // count the generated default interface methods |
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696 // these will not be re-created by write_method_info |
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697 // and should not be included in the total count |
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698 for (int index = 0; index < num_methods; index++) { |
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699 Method* method = methods->at(index); |
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700 if (method->is_overpass()) { |
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701 num_overpass++; |
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702 } |
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703 } |
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704 |
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705 write_u2(num_methods - num_overpass); |
0 | 706 if (JvmtiExport::can_maintain_original_method_order()) { |
707 int index; | |
708 int original_index; | |
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709 intArray method_order(num_methods, 0); |
0 | 710 |
711 // invert the method order mapping | |
712 for (index = 0; index < num_methods; index++) { | |
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713 original_index = ikh()->method_ordering()->at(index); |
0 | 714 assert(original_index >= 0 && original_index < num_methods, |
715 "invalid original method index"); | |
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716 method_order.at_put(original_index, index); |
0 | 717 } |
718 | |
719 // write in original order | |
720 for (original_index = 0; original_index < num_methods; original_index++) { | |
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721 index = method_order.at(original_index); |
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722 methodHandle method(thread(), methods->at(index)); |
0 | 723 write_method_info(method); |
724 } | |
725 } else { | |
726 // method order not preserved just dump the method infos | |
727 for (int index = 0; index < num_methods; index++) { | |
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728 methodHandle method(thread(), methods->at(index)); |
0 | 729 write_method_info(method); |
730 } | |
731 } | |
732 } | |
733 | |
734 void JvmtiClassFileReconstituter::write_class_file_format() { | |
735 ReallocMark(); | |
736 | |
737 // JVMSpec| ClassFile { | |
738 // JVMSpec| u4 magic; | |
739 write_u4(0xCAFEBABE); | |
740 | |
741 // JVMSpec| u2 minor_version; | |
742 // JVMSpec| u2 major_version; | |
743 write_u2(ikh()->minor_version()); | |
744 u2 major = ikh()->major_version(); | |
745 write_u2(major); | |
746 | |
747 // JVMSpec| u2 constant_pool_count; | |
748 // JVMSpec| cp_info constant_pool[constant_pool_count-1]; | |
749 write_u2(cpool()->length()); | |
750 copy_cpool_bytes(writeable_address(cpool_size())); | |
751 | |
752 // JVMSpec| u2 access_flags; | |
753 write_u2(ikh()->access_flags().get_flags() & JVM_RECOGNIZED_CLASS_MODIFIERS); | |
754 | |
755 // JVMSpec| u2 this_class; | |
756 // JVMSpec| u2 super_class; | |
757 write_u2(class_symbol_to_cpool_index(ikh()->name())); | |
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758 Klass* super_class = ikh()->super(); |
0 | 759 write_u2(super_class == NULL? 0 : // zero for java.lang.Object |
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760 class_symbol_to_cpool_index(super_class->name())); |
0 | 761 |
762 // JVMSpec| u2 interfaces_count; | |
763 // JVMSpec| u2 interfaces[interfaces_count]; | |
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764 Array<Klass*>* interfaces = ikh()->local_interfaces(); |
0 | 765 int num_interfaces = interfaces->length(); |
766 write_u2(num_interfaces); | |
767 for (int index = 0; index < num_interfaces; index++) { | |
768 HandleMark hm(thread()); | |
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769 instanceKlassHandle iikh(thread(), interfaces->at(index)); |
0 | 770 write_u2(class_symbol_to_cpool_index(iikh->name())); |
771 } | |
772 | |
773 // JVMSpec| u2 fields_count; | |
774 // JVMSpec| field_info fields[fields_count]; | |
775 write_field_infos(); | |
776 | |
777 // JVMSpec| u2 methods_count; | |
778 // JVMSpec| method_info methods[methods_count]; | |
779 write_method_infos(); | |
780 | |
781 // JVMSpec| u2 attributes_count; | |
782 // JVMSpec| attribute_info attributes[attributes_count]; | |
783 // JVMSpec| } /* end ClassFile 8? | |
784 write_class_attributes(); | |
785 } | |
786 | |
787 address JvmtiClassFileReconstituter::writeable_address(size_t size) { | |
788 size_t used_size = _buffer_ptr - _buffer; | |
789 if (size + used_size >= _buffer_size) { | |
790 // compute the new buffer size: must be at least twice as big as before | |
791 // plus whatever new is being used; then convert to nice clean block boundary | |
792 size_t new_buffer_size = (size + _buffer_size*2 + 1) / initial_buffer_size | |
793 * initial_buffer_size; | |
794 | |
795 // VM goes belly-up if the memory isn't available, so cannot do OOM processing | |
796 _buffer = REALLOC_RESOURCE_ARRAY(u1, _buffer, _buffer_size, new_buffer_size); | |
797 _buffer_size = new_buffer_size; | |
798 _buffer_ptr = _buffer + used_size; | |
799 } | |
800 u1* ret_ptr = _buffer_ptr; | |
801 _buffer_ptr += size; | |
802 return ret_ptr; | |
803 } | |
804 | |
805 void JvmtiClassFileReconstituter::write_attribute_name_index(const char* name) { | |
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806 TempNewSymbol sym = SymbolTable::probe(name, (int)strlen(name)); |
0 | 807 assert(sym != NULL, "attribute name symbol not found"); |
808 u2 attr_name_index = symbol_to_cpool_index(sym); | |
809 assert(attr_name_index != 0, "attribute name symbol not in constant pool"); | |
810 write_u2(attr_name_index); | |
811 } | |
812 | |
813 void JvmtiClassFileReconstituter::write_u1(u1 x) { | |
814 *writeable_address(1) = x; | |
815 } | |
816 | |
817 void JvmtiClassFileReconstituter::write_u2(u2 x) { | |
818 Bytes::put_Java_u2(writeable_address(2), x); | |
819 } | |
820 | |
821 void JvmtiClassFileReconstituter::write_u4(u4 x) { | |
822 Bytes::put_Java_u4(writeable_address(4), x); | |
823 } | |
824 | |
825 void JvmtiClassFileReconstituter::write_u8(u8 x) { | |
826 Bytes::put_Java_u8(writeable_address(8), x); | |
827 } | |
828 | |
829 void JvmtiClassFileReconstituter::copy_bytecodes(methodHandle mh, | |
830 unsigned char* bytecodes) { | |
831 // use a BytecodeStream to iterate over the bytecodes. JVM/fast bytecodes | |
832 // and the breakpoint bytecode are converted to their original bytecodes. | |
833 | |
834 BytecodeStream bs(mh); | |
835 | |
836 unsigned char* p = bytecodes; | |
837 Bytecodes::Code code; | |
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838 bool is_rewritten = mh->method_holder()->is_rewritten(); |
0 | 839 |
840 while ((code = bs.next()) >= 0) { | |
841 assert(Bytecodes::is_java_code(code), "sanity check"); | |
842 assert(code != Bytecodes::_breakpoint, "sanity check"); | |
843 | |
844 // length of bytecode (mnemonic + operands) | |
845 address bcp = bs.bcp(); | |
1565 | 846 int len = bs.instruction_size(); |
0 | 847 assert(len > 0, "length must be > 0"); |
848 | |
849 // copy the bytecodes | |
850 *p = (unsigned char) (bs.is_wide()? Bytecodes::_wide : code); | |
851 if (len > 1) { | |
852 memcpy(p+1, bcp+1, len-1); | |
853 } | |
854 | |
855 // During linking the get/put and invoke instructions are rewritten | |
856 // with an index into the constant pool cache. The original constant | |
857 // pool index must be returned to caller. Rewrite the index. | |
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858 if (is_rewritten && len > 1) { |
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859 bool is_wide = false; |
0 | 860 switch (code) { |
861 case Bytecodes::_getstatic : // fall through | |
862 case Bytecodes::_putstatic : // fall through | |
863 case Bytecodes::_getfield : // fall through | |
864 case Bytecodes::_putfield : // fall through | |
865 case Bytecodes::_invokevirtual : // fall through | |
866 case Bytecodes::_invokespecial : // fall through | |
867 case Bytecodes::_invokestatic : // fall through | |
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868 case Bytecodes::_invokedynamic : // fall through |
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869 case Bytecodes::_invokeinterface : { |
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870 assert(len == 3 || |
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871 (code == Bytecodes::_invokeinterface && len == 5) || |
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872 (code == Bytecodes::_invokedynamic && len == 5), |
0 | 873 "sanity check"); |
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874 |
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875 int cpci = Bytes::get_native_u2(bcp+1); |
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876 bool is_invokedynamic = (EnableInvokeDynamic && code == Bytecodes::_invokedynamic); |
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877 ConstantPoolCacheEntry* entry; |
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878 if (is_invokedynamic) { |
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879 cpci = Bytes::get_native_u4(bcp+1); |
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880 entry = mh->constants()->invokedynamic_cp_cache_entry_at(cpci); |
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881 } else { |
0 | 882 // cache cannot be pre-fetched since some classes won't have it yet |
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883 entry = mh->constants()->cache()->entry_at(cpci); |
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884 } |
0 | 885 int i = entry->constant_pool_index(); |
886 assert(i < mh->constants()->length(), "sanity check"); | |
887 Bytes::put_Java_u2((address)(p+1), (u2)i); // java byte ordering | |
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888 if (is_invokedynamic) *(p+3) = *(p+4) = 0; |
0 | 889 break; |
890 } | |
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891 case Bytecodes::_ldc_w: |
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892 is_wide = true; // fall through |
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893 case Bytecodes::_ldc: { |
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894 if (bs.raw_code() == Bytecodes::_fast_aldc || bs.raw_code() == Bytecodes::_fast_aldc_w) { |
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895 int cpci = is_wide ? Bytes::get_native_u2(bcp+1) : (u1)(*(bcp+1)); |
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896 int i = mh->constants()->object_to_cp_index(cpci); |
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897 assert(i < mh->constants()->length(), "sanity check"); |
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898 if (is_wide) { |
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899 Bytes::put_Java_u2((address)(p+1), (u2)i); // java byte ordering |
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900 } else { |
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901 *(p+1) = (u1)i; |
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902 } |
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903 } |
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904 break; |
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905 } |
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906 } |
0 | 907 } |
908 | |
909 p += len; | |
910 } | |
911 } |