Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/tools/jcore/ClassWriter.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
author | trims |
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date | Thu, 27 May 2010 19:08:38 -0700 |
parents | bc32f286fae0 |
children | 136b78722a08 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2010, 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 * | |
1552
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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parents:
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20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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parents:
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.tools.jcore; | |
26 | |
27 import java.io.*; | |
28 import java.util.*; | |
29 import sun.jvm.hotspot.oops.*; | |
30 import sun.jvm.hotspot.runtime.*; | |
31 | |
32 public class ClassWriter implements /* imports */ ClassConstants | |
33 { | |
34 public static final boolean DEBUG = false; | |
35 | |
36 protected void debugMessage(String message) { | |
37 System.out.println(message); | |
38 } | |
39 | |
40 protected InstanceKlass klass; | |
41 protected DataOutputStream dos; | |
42 protected ConstantPool cpool; | |
43 | |
44 // Map between class name to index of type CONSTANT_Class | |
45 protected Map classToIndex = new HashMap(); | |
46 | |
47 // Map between any modified UTF-8 and it's constant pool index. | |
48 protected Map utf8ToIndex = new HashMap(); | |
49 | |
50 // constant pool index for attribute names. | |
51 | |
52 protected short _sourceFileIndex; | |
53 protected short _innerClassesIndex; | |
54 protected short _syntheticIndex; | |
55 protected short _deprecatedIndex; | |
56 protected short _constantValueIndex; | |
57 protected short _codeIndex; | |
58 protected short _exceptionsIndex; | |
59 protected short _lineNumberTableIndex; | |
60 protected short _localVariableTableIndex; | |
61 protected short _signatureIndex; | |
62 | |
63 protected static int extractHighShortFromInt(int val) { | |
64 return (val >> 16) & 0xFFFF; | |
65 } | |
66 | |
67 protected static int extractLowShortFromInt(int val) { | |
68 return val & 0xFFFF; | |
69 } | |
70 | |
71 public ClassWriter(InstanceKlass kls, OutputStream os) { | |
72 klass = kls; | |
73 dos = new DataOutputStream(os); | |
74 cpool = klass.getConstants(); | |
75 } | |
76 | |
77 public void write() throws IOException { | |
78 if (DEBUG) debugMessage("class name = " + klass.getName().asString()); | |
79 | |
80 // write magic | |
81 dos.writeInt(0xCAFEBABE); | |
82 | |
705 | 83 writeVersion(); |
0 | 84 writeConstantPool(); |
85 writeClassAccessFlags(); | |
86 writeThisClass(); | |
87 writeSuperClass(); | |
88 writeInterfaces(); | |
89 writeFields(); | |
90 writeMethods(); | |
91 writeClassAttributes(); | |
92 | |
93 // flush output | |
94 dos.flush(); | |
95 } | |
96 | |
705 | 97 protected void writeVersion() throws IOException { |
98 dos.writeShort((short)klass.minorVersion()); | |
99 dos.writeShort((short)klass.majorVersion()); | |
0 | 100 } |
101 | |
705 | 102 protected void writeIndex(int index) throws IOException { |
103 if (index == 0) throw new InternalError(); | |
104 dos.writeShort(index); | |
0 | 105 } |
106 | |
107 protected void writeConstantPool() throws IOException { | |
108 final TypeArray tags = cpool.getTags(); | |
109 final long len = tags.getLength(); | |
110 dos.writeShort((short) len); | |
111 | |
112 if (DEBUG) debugMessage("constant pool length = " + len); | |
113 | |
114 int ci = 0; // constant pool index | |
115 | |
116 // collect all modified UTF-8 Strings from Constant Pool | |
117 | |
118 for (ci = 1; ci < len; ci++) { | |
119 byte cpConstType = tags.getByteAt(ci); | |
120 if(cpConstType == JVM_CONSTANT_Utf8) { | |
121 Symbol sym = cpool.getSymbolAt(ci); | |
122 utf8ToIndex.put(sym.asString(), new Short((short) ci)); | |
123 } | |
124 else if(cpConstType == JVM_CONSTANT_Long || | |
125 cpConstType == JVM_CONSTANT_Double) { | |
126 ci++; | |
127 } | |
128 } | |
129 | |
130 // remember index of attribute name modified UTF-8 strings | |
131 | |
132 // class attributes | |
133 Short sourceFileIndex = (Short) utf8ToIndex.get("SourceFile"); | |
134 _sourceFileIndex = (sourceFileIndex != null)? sourceFileIndex.shortValue() : 0; | |
135 if (DEBUG) debugMessage("SourceFile index = " + _sourceFileIndex); | |
136 | |
137 Short innerClassesIndex = (Short) utf8ToIndex.get("InnerClasses"); | |
138 _innerClassesIndex = (innerClassesIndex != null)? innerClassesIndex.shortValue() : 0; | |
139 if (DEBUG) debugMessage("InnerClasses index = " + _innerClassesIndex); | |
140 | |
141 // field attributes | |
142 Short constantValueIndex = (Short) utf8ToIndex.get("ConstantValue"); | |
143 _constantValueIndex = (constantValueIndex != null)? | |
144 constantValueIndex.shortValue() : 0; | |
145 if (DEBUG) debugMessage("ConstantValue index = " + _constantValueIndex); | |
146 | |
147 Short syntheticIndex = (Short) utf8ToIndex.get("Synthetic"); | |
148 _syntheticIndex = (syntheticIndex != null)? syntheticIndex.shortValue() : 0; | |
149 if (DEBUG) debugMessage("Synthetic index = " + _syntheticIndex); | |
150 | |
151 Short deprecatedIndex = (Short) utf8ToIndex.get("Deprecated"); | |
152 _deprecatedIndex = (deprecatedIndex != null)? deprecatedIndex.shortValue() : 0; | |
153 if (DEBUG) debugMessage("Deprecated index = " + _deprecatedIndex); | |
154 | |
155 // method attributes | |
156 Short codeIndex = (Short) utf8ToIndex.get("Code"); | |
157 _codeIndex = (codeIndex != null)? codeIndex.shortValue() : 0; | |
158 if (DEBUG) debugMessage("Code index = " + _codeIndex); | |
159 | |
160 Short exceptionsIndex = (Short) utf8ToIndex.get("Exceptions"); | |
161 _exceptionsIndex = (exceptionsIndex != null)? exceptionsIndex.shortValue() : 0; | |
162 if (DEBUG) debugMessage("Exceptions index = " + _exceptionsIndex); | |
163 | |
164 // Short syntheticIndex = (Short) utf8ToIndex.get("Synthetic"); | |
165 // Short deprecatedIndex = (Short) utf8ToIndex.get("Deprecated"); | |
166 | |
167 // Code attributes | |
168 Short lineNumberTableIndex = (Short) utf8ToIndex.get("LineNumberTable"); | |
169 _lineNumberTableIndex = (lineNumberTableIndex != null)? | |
170 lineNumberTableIndex.shortValue() : 0; | |
171 if (DEBUG) debugMessage("LineNumberTable index = " + _lineNumberTableIndex); | |
172 | |
173 Short localVariableTableIndex = (Short) utf8ToIndex.get("LocalVariableTable"); | |
174 _localVariableTableIndex = (localVariableTableIndex != null)? | |
175 localVariableTableIndex.shortValue() : 0; | |
176 if (DEBUG) debugMessage("LocalVariableTable index = " + _localVariableTableIndex); | |
177 | |
178 Short signatureIdx = (Short) utf8ToIndex.get("Signature"); | |
179 _signatureIndex = (signatureIdx != null)? signatureIdx.shortValue() : 0; | |
180 if (DEBUG) debugMessage("Signature index = " + _signatureIndex); | |
181 | |
182 for(ci = 1; ci < len; ci++) { | |
183 // write cp_info | |
184 // write constant type | |
185 byte cpConstType = tags.getByteAt(ci); | |
186 switch(cpConstType) { | |
187 case JVM_CONSTANT_Utf8: { | |
188 dos.writeByte(cpConstType); | |
189 Symbol sym = cpool.getSymbolAt(ci); | |
190 dos.writeShort((short)sym.getLength()); | |
191 dos.write(sym.asByteArray()); | |
192 if (DEBUG) debugMessage("CP[" + ci + "] = modified UTF-8 " + sym.asString()); | |
193 break; | |
194 } | |
195 | |
196 case JVM_CONSTANT_Unicode: | |
197 throw new IllegalArgumentException("Unicode constant!"); | |
198 | |
199 case JVM_CONSTANT_Integer: | |
200 dos.writeByte(cpConstType); | |
201 dos.writeInt(cpool.getIntAt(ci)); | |
202 if (DEBUG) debugMessage("CP[" + ci + "] = int " + cpool.getIntAt(ci)); | |
203 break; | |
204 | |
205 case JVM_CONSTANT_Float: | |
206 dos.writeByte(cpConstType); | |
207 dos.writeFloat(cpool.getFloatAt(ci)); | |
208 if (DEBUG) debugMessage("CP[" + ci + "] = float " + cpool.getFloatAt(ci)); | |
209 break; | |
210 | |
211 case JVM_CONSTANT_Long: { | |
212 dos.writeByte(cpConstType); | |
213 long l = cpool.getLongAt(ci); | |
214 // long entries occupy two pool entries | |
215 ci++; | |
216 dos.writeLong(l); | |
217 break; | |
218 } | |
219 | |
220 case JVM_CONSTANT_Double: | |
221 dos.writeByte(cpConstType); | |
222 dos.writeDouble(cpool.getDoubleAt(ci)); | |
223 // double entries occupy two pool entries | |
224 ci++; | |
225 break; | |
226 | |
227 case JVM_CONSTANT_Class: { | |
228 dos.writeByte(cpConstType); | |
229 // Klass already resolved. ConstantPool constains klassOop. | |
230 Klass refKls = (Klass) cpool.getObjAt(ci); | |
231 String klassName = refKls.getName().asString(); | |
232 | |
233 Short s = (Short) utf8ToIndex.get(klassName); | |
234 classToIndex.put(klassName, new Short((short)ci)); | |
235 dos.writeShort(s.shortValue()); | |
236 if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); | |
237 break; | |
238 } | |
239 | |
240 // case JVM_CONSTANT_ClassIndex: | |
1385 | 241 case JVM_CONSTANT_UnresolvedClassInError: |
0 | 242 case JVM_CONSTANT_UnresolvedClass: { |
243 dos.writeByte(JVM_CONSTANT_Class); | |
244 String klassName = cpool.getSymbolAt(ci).asString(); | |
245 | |
246 Short s = (Short) utf8ToIndex.get(klassName); | |
247 classToIndex.put(klassName, new Short((short) ci)); | |
248 | |
249 dos.writeShort(s.shortValue()); | |
250 if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); | |
251 break; | |
252 } | |
253 | |
254 case JVM_CONSTANT_String: { | |
255 dos.writeByte(cpConstType); | |
256 String str = OopUtilities.stringOopToString(cpool.getObjAt(ci)); | |
257 Short s = (Short) utf8ToIndex.get(str); | |
258 dos.writeShort(s.shortValue()); | |
259 if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); | |
260 break; | |
261 } | |
262 | |
263 // case JVM_CONSTANT_StringIndex: | |
264 case JVM_CONSTANT_UnresolvedString: { | |
265 dos.writeByte(JVM_CONSTANT_String); | |
266 String val = cpool.getSymbolAt(ci).asString(); | |
267 | |
268 Short s = (Short) utf8ToIndex.get(val); | |
269 dos.writeShort(s.shortValue()); | |
270 if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); | |
271 break; | |
272 } | |
273 | |
274 // all external, internal method/field references | |
275 case JVM_CONSTANT_Fieldref: | |
276 case JVM_CONSTANT_Methodref: | |
277 case JVM_CONSTANT_InterfaceMethodref: { | |
278 dos.writeByte(cpConstType); | |
279 int value = cpool.getIntAt(ci); | |
280 short klassIndex = (short) extractLowShortFromInt(value); | |
281 short nameAndTypeIndex = (short) extractHighShortFromInt(value); | |
282 dos.writeShort(klassIndex); | |
283 dos.writeShort(nameAndTypeIndex); | |
284 if (DEBUG) debugMessage("CP[" + ci + "] = ref klass = " + | |
285 klassIndex + ", N&T = " + nameAndTypeIndex); | |
286 break; | |
287 } | |
288 | |
289 case JVM_CONSTANT_NameAndType: { | |
290 dos.writeByte(cpConstType); | |
291 int value = cpool.getIntAt(ci); | |
292 short nameIndex = (short) extractLowShortFromInt(value); | |
293 short signatureIndex = (short) extractHighShortFromInt(value); | |
294 dos.writeShort(nameIndex); | |
295 dos.writeShort(signatureIndex); | |
296 if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex | |
297 + ", type = " + signatureIndex); | |
298 break; | |
299 } | |
1385 | 300 default: |
301 throw new InternalError("Unknown tag: " + cpConstType); | |
0 | 302 } // switch |
303 } | |
304 } | |
305 | |
306 protected void writeClassAccessFlags() throws IOException { | |
307 int flags = (int)(klass.getAccessFlags() & JVM_RECOGNIZED_CLASS_MODIFIERS); | |
308 dos.writeShort((short)flags); | |
309 } | |
310 | |
311 protected void writeThisClass() throws IOException { | |
312 String klassName = klass.getName().asString(); | |
313 Short index = (Short) classToIndex.get(klassName); | |
314 dos.writeShort(index.shortValue()); | |
315 if (DEBUG) debugMessage("this class = " + index); | |
316 } | |
317 | |
318 protected void writeSuperClass() throws IOException { | |
319 Klass superKlass = klass.getSuper(); | |
320 if (superKlass != null) { // is not java.lang.Object | |
321 String superName = superKlass.getName().asString(); | |
322 Short index = (Short) classToIndex.get(superName); | |
323 if (DEBUG) debugMessage("super class = " + index); | |
324 dos.writeShort(index.shortValue()); | |
325 } else { | |
326 dos.writeShort(0); // no super class | |
327 } | |
328 } | |
329 protected void writeInterfaces() throws IOException { | |
330 ObjArray interfaces = klass.getLocalInterfaces(); | |
331 final int len = (int) interfaces.getLength(); | |
332 | |
333 if (DEBUG) debugMessage("number of interfaces = " + len); | |
334 | |
335 // write interfaces count | |
336 dos.writeShort((short) len); | |
337 for (int i = 0; i < len; i++) { | |
338 Klass k = (Klass) interfaces.getObjAt(i); | |
339 Short index = (Short) classToIndex.get(k.getName().asString()); | |
340 dos.writeShort(index.shortValue()); | |
341 if (DEBUG) debugMessage("\t" + index); | |
342 } | |
343 } | |
344 | |
345 protected void writeFields() throws IOException { | |
346 TypeArray fields = klass.getFields(); | |
347 final int length = (int) fields.getLength(); | |
348 | |
349 // write number of fields | |
350 dos.writeShort((short) (length / InstanceKlass.NEXT_OFFSET) ); | |
351 | |
352 if (DEBUG) debugMessage("number of fields = " | |
353 + length/InstanceKlass.NEXT_OFFSET); | |
354 | |
355 for (int index = 0; index < length; index += InstanceKlass.NEXT_OFFSET) { | |
356 short accessFlags = fields.getShortAt(index + InstanceKlass.ACCESS_FLAGS_OFFSET); | |
357 dos.writeShort(accessFlags & (short) JVM_RECOGNIZED_FIELD_MODIFIERS); | |
358 | |
359 short nameIndex = fields.getShortAt(index + InstanceKlass.NAME_INDEX_OFFSET); | |
360 dos.writeShort(nameIndex); | |
361 | |
362 short signatureIndex = fields.getShortAt(index + InstanceKlass.SIGNATURE_INDEX_OFFSET); | |
363 dos.writeShort(signatureIndex); | |
364 if (DEBUG) debugMessage("\tfield name = " + nameIndex + ", signature = " + signatureIndex); | |
365 | |
366 short fieldAttributeCount = 0; | |
705 | 367 boolean hasSyn = hasSyntheticAttribute(accessFlags); |
368 if (hasSyn) | |
0 | 369 fieldAttributeCount++; |
370 | |
371 short initvalIndex = fields.getShortAt(index + InstanceKlass.INITVAL_INDEX_OFFSET); | |
372 if (initvalIndex != 0) | |
373 fieldAttributeCount++; | |
374 | |
375 short genSigIndex = fields.getShortAt(index + InstanceKlass.GENERIC_SIGNATURE_INDEX_OFFSET); | |
376 if (genSigIndex != 0) | |
377 fieldAttributeCount++; | |
378 | |
379 dos.writeShort(fieldAttributeCount); | |
380 | |
381 // write synthetic, if applicable | |
705 | 382 if (hasSyn) |
0 | 383 writeSynthetic(); |
384 | |
385 if (initvalIndex != 0) { | |
705 | 386 writeIndex(_constantValueIndex); |
0 | 387 dos.writeInt(2); |
388 dos.writeShort(initvalIndex); | |
389 if (DEBUG) debugMessage("\tfield init value = " + initvalIndex); | |
390 } | |
391 | |
392 if (genSigIndex != 0) { | |
705 | 393 writeIndex(_signatureIndex); |
0 | 394 dos.writeInt(2); |
395 dos.writeShort(genSigIndex); | |
396 if (DEBUG) debugMessage("\tfield generic signature index " + genSigIndex); | |
397 } | |
398 } | |
399 } | |
400 | |
401 protected boolean isSynthetic(short accessFlags) { | |
402 return (accessFlags & (short) JVM_ACC_SYNTHETIC) != 0; | |
403 } | |
404 | |
705 | 405 protected boolean hasSyntheticAttribute(short accessFlags) { |
406 // Check if flags have the attribute and if the constant pool contains an entry for it. | |
407 return isSynthetic(accessFlags) && _syntheticIndex != 0; | |
408 } | |
409 | |
0 | 410 protected void writeSynthetic() throws IOException { |
705 | 411 writeIndex(_syntheticIndex); |
0 | 412 dos.writeInt(0); |
413 } | |
414 | |
415 protected void writeMethods() throws IOException { | |
416 ObjArray methods = klass.getMethods(); | |
417 final int len = (int) methods.getLength(); | |
418 // write number of methods | |
419 dos.writeShort((short) len); | |
420 if (DEBUG) debugMessage("number of methods = " + len); | |
421 for (int m = 0; m < len; m++) { | |
422 writeMethod((Method) methods.getObjAt(m)); | |
423 } | |
424 } | |
425 | |
426 protected void writeMethod(Method m) throws IOException { | |
427 long accessFlags = m.getAccessFlags(); | |
428 dos.writeShort((short) (accessFlags & JVM_RECOGNIZED_METHOD_MODIFIERS)); | |
429 dos.writeShort((short) m.getNameIndex()); | |
430 dos.writeShort((short) m.getSignatureIndex()); | |
431 if (DEBUG) debugMessage("\tmethod name = " + m.getNameIndex() + ", signature = " | |
432 + m.getSignatureIndex()); | |
433 | |
434 final boolean isNative = ((accessFlags & JVM_ACC_NATIVE) != 0); | |
435 final boolean isAbstract = ((accessFlags & JVM_ACC_ABSTRACT) != 0); | |
436 | |
437 short methodAttributeCount = 0; | |
438 | |
705 | 439 final boolean hasSyn = hasSyntheticAttribute((short)accessFlags); |
440 if (hasSyn) | |
0 | 441 methodAttributeCount++; |
442 | |
443 final boolean hasCheckedExceptions = m.hasCheckedExceptions(); | |
444 if (hasCheckedExceptions) | |
445 methodAttributeCount++; | |
446 | |
447 final boolean isCodeAvailable = (!isNative) && (!isAbstract); | |
448 if (isCodeAvailable) | |
449 methodAttributeCount++; | |
450 | |
451 final boolean isGeneric = (m.getGenericSignature() != null); | |
452 if (isGeneric) | |
453 methodAttributeCount++; | |
454 | |
455 dos.writeShort(methodAttributeCount); | |
456 if (DEBUG) debugMessage("\tmethod attribute count = " + methodAttributeCount); | |
457 | |
705 | 458 if (hasSyn) { |
0 | 459 if (DEBUG) debugMessage("\tmethod is synthetic"); |
460 writeSynthetic(); | |
461 } | |
462 | |
463 if (isCodeAvailable) { | |
464 byte[] code = m.getByteCode(); | |
465 short codeAttrCount = 0; | |
466 int codeSize = 2 /* max_stack */ + | |
467 2 /* max_locals */ + | |
468 4 /* code_length */ + | |
469 code.length /* code */ + | |
470 2 /* exp. table len. */ + | |
471 2 /* code attr. count */; | |
472 | |
473 TypeArray exceptionTable = m.getExceptionTable(); | |
474 final int exceptionTableLen = (int) exceptionTable.getLength(); | |
475 if (exceptionTableLen != 0) { | |
476 if (DEBUG) debugMessage("\tmethod has exception table"); | |
477 codeSize += (exceptionTableLen / 4) /* exception table is 4-tuple array */ | |
478 * (2 /* start_pc */ + | |
479 2 /* end_pc */ + | |
480 2 /* handler_pc */ + | |
481 2 /* catch_type */); | |
482 } | |
483 | |
484 boolean hasLineNumberTable = m.hasLineNumberTable(); | |
485 LineNumberTableElement[] lineNumberTable = null; | |
486 int lineNumberAttrLen = 0; | |
487 | |
488 if (hasLineNumberTable) { | |
489 if (DEBUG) debugMessage("\tmethod has line number table"); | |
490 lineNumberTable = m.getLineNumberTable(); | |
491 if (DEBUG) debugMessage("\t\tline table length = " + lineNumberTable.length); | |
492 | |
493 lineNumberAttrLen = 2 /* line number table length */ + | |
494 lineNumberTable.length * (2 /* start_pc */ + 2 /* line_number */); | |
495 | |
496 codeSize += 2 /* line number table attr index */ + | |
497 4 /* line number table attr length */ + | |
498 lineNumberAttrLen; | |
499 | |
500 if (DEBUG) debugMessage("\t\tline number table attr size = " + | |
501 lineNumberAttrLen); | |
502 | |
503 codeAttrCount++; | |
504 } | |
505 | |
506 boolean hasLocalVariableTable = m.hasLocalVariableTable(); | |
507 LocalVariableTableElement[] localVariableTable = null; | |
508 int localVarAttrLen = 0; | |
509 | |
510 if (hasLocalVariableTable) { | |
511 if (DEBUG) debugMessage("\tmethod has local variable table"); | |
512 localVariableTable = m.getLocalVariableTable(); | |
513 if (DEBUG) debugMessage("\t\tlocal variable table length = " | |
514 + localVariableTable.length); | |
515 localVarAttrLen = | |
516 2 /* local variable table length */ + | |
517 localVariableTable.length * ( 2 /* start_pc */ + | |
518 2 /* length */ + | |
519 2 /* name_index */ + | |
520 2 /* signature_index */ + | |
521 2 /* variable index */ ); | |
522 | |
523 if (DEBUG) debugMessage("\t\tlocal variable attr size = " + | |
524 localVarAttrLen); | |
525 | |
526 codeSize += 2 /* local variable table attr index */ + | |
527 4 /* local variable table attr length */ + | |
528 localVarAttrLen; | |
529 | |
530 codeAttrCount++; | |
531 } | |
532 | |
533 // fix ConstantPoolCache indices to ConstantPool indices. | |
534 rewriteByteCode(m, code); | |
535 | |
536 // start writing Code | |
537 | |
705 | 538 writeIndex(_codeIndex); |
0 | 539 |
540 dos.writeInt(codeSize); | |
541 if (DEBUG) debugMessage("\tcode attribute length = " + codeSize); | |
542 | |
543 dos.writeShort((short) m.getMaxStack()); | |
544 if (DEBUG) debugMessage("\tmax stack = " + m.getMaxStack()); | |
545 | |
546 dos.writeShort((short) m.getMaxLocals()); | |
547 if (DEBUG) debugMessage("\tmax locals = " + m.getMaxLocals()); | |
548 | |
549 dos.writeInt(code.length); | |
550 if (DEBUG) debugMessage("\tcode size = " + code.length); | |
551 | |
552 dos.write(code); | |
553 | |
554 // write exception table size | |
555 dos.writeShort((short) (exceptionTableLen / 4)); | |
556 if (DEBUG) debugMessage("\texception table length = " + (exceptionTableLen / 4)); | |
557 | |
558 if (exceptionTableLen != 0) { | |
559 for (int e = 0; e < exceptionTableLen; e += 4) { | |
560 dos.writeShort((short) exceptionTable.getIntAt(e)); | |
561 dos.writeShort((short) exceptionTable.getIntAt(e + 1)); | |
562 dos.writeShort((short) exceptionTable.getIntAt(e + 2)); | |
563 dos.writeShort((short) exceptionTable.getIntAt(e + 3)); | |
564 } | |
565 } | |
566 | |
567 dos.writeShort((short)codeAttrCount); | |
568 if (DEBUG) debugMessage("\tcode attribute count = " + codeAttrCount); | |
569 | |
570 // write LineNumberTable, if available. | |
571 if (hasLineNumberTable) { | |
705 | 572 writeIndex(_lineNumberTableIndex); |
0 | 573 dos.writeInt(lineNumberAttrLen); |
574 dos.writeShort((short) lineNumberTable.length); | |
575 for (int l = 0; l < lineNumberTable.length; l++) { | |
576 dos.writeShort((short) lineNumberTable[l].getStartBCI()); | |
577 dos.writeShort((short) lineNumberTable[l].getLineNumber()); | |
578 } | |
579 } | |
580 | |
581 // write LocalVariableTable, if available. | |
582 if (hasLocalVariableTable) { | |
705 | 583 writeIndex((short) _localVariableTableIndex); |
0 | 584 dos.writeInt(localVarAttrLen); |
585 dos.writeShort((short) localVariableTable.length); | |
586 for (int l = 0; l < localVariableTable.length; l++) { | |
587 dos.writeShort((short) localVariableTable[l].getStartBCI()); | |
588 dos.writeShort((short) localVariableTable[l].getLength()); | |
589 dos.writeShort((short) localVariableTable[l].getNameCPIndex()); | |
590 dos.writeShort((short) localVariableTable[l].getDescriptorCPIndex()); | |
591 dos.writeShort((short) localVariableTable[l].getSlot()); | |
592 } | |
593 } | |
594 } | |
595 | |
705 | 596 if (hasCheckedExceptions) { |
597 CheckedExceptionElement[] exceptions = m.getCheckedExceptions(); | |
598 writeIndex(_exceptionsIndex); | |
599 | |
600 int attrSize = 2 /* number_of_exceptions */ + | |
601 exceptions.length * 2 /* exception_index */; | |
602 dos.writeInt(attrSize); | |
603 dos.writeShort(exceptions.length); | |
604 if (DEBUG) debugMessage("\tmethod has " + exceptions.length | |
605 + " checked exception(s)"); | |
606 for (int e = 0; e < exceptions.length; e++) { | |
607 short cpIndex = (short) exceptions[e].getClassCPIndex(); | |
608 dos.writeShort(cpIndex); | |
609 } | |
610 } | |
611 | |
0 | 612 if (isGeneric) { |
613 writeGenericSignature(m.getGenericSignature().asString()); | |
614 } | |
615 } | |
616 | |
617 protected void rewriteByteCode(Method m, byte[] code) { | |
618 ByteCodeRewriter r = new ByteCodeRewriter(m, cpool, code); | |
619 r.rewrite(); | |
620 } | |
621 | |
622 protected void writeGenericSignature(String signature) throws IOException { | |
705 | 623 writeIndex(_signatureIndex); |
0 | 624 if (DEBUG) debugMessage("signature attribute = " + _signatureIndex); |
625 dos.writeInt(2); | |
626 Short index = (Short) utf8ToIndex.get(signature); | |
627 dos.writeShort(index.shortValue()); | |
628 if (DEBUG) debugMessage("generic signature = " + index); | |
629 } | |
630 | |
631 protected void writeClassAttributes() throws IOException { | |
632 final long flags = klass.getAccessFlags(); | |
705 | 633 final boolean hasSyn = hasSyntheticAttribute((short) flags); |
0 | 634 |
635 // check for source file | |
636 short classAttributeCount = 0; | |
637 | |
705 | 638 if (hasSyn) |
0 | 639 classAttributeCount++; |
640 | |
641 Symbol sourceFileName = klass.getSourceFileName(); | |
642 if (sourceFileName != null) | |
643 classAttributeCount++; | |
644 | |
645 Symbol genericSignature = klass.getGenericSignature(); | |
646 if (genericSignature != null) | |
647 classAttributeCount++; | |
648 | |
649 TypeArray innerClasses = klass.getInnerClasses(); | |
650 final int numInnerClasses = (int) (innerClasses.getLength() / 4); | |
651 if (numInnerClasses != 0) | |
652 classAttributeCount++; | |
653 | |
654 dos.writeShort(classAttributeCount); | |
655 if (DEBUG) debugMessage("class attribute count = " + classAttributeCount); | |
656 | |
705 | 657 if (hasSyn) |
0 | 658 writeSynthetic(); |
659 | |
660 // write SourceFile, if any | |
661 if (sourceFileName != null) { | |
705 | 662 writeIndex(_sourceFileIndex); |
0 | 663 if (DEBUG) debugMessage("source file attribute = " + _sourceFileIndex); |
664 dos.writeInt(2); | |
665 Short index = (Short) utf8ToIndex.get(sourceFileName.asString()); | |
666 dos.writeShort(index.shortValue()); | |
667 if (DEBUG) debugMessage("source file name = " + index); | |
668 } | |
669 | |
670 // write Signature, if any | |
671 if (genericSignature != null) { | |
672 writeGenericSignature(genericSignature.asString()); | |
673 } | |
674 | |
675 // write inner classes, if any | |
676 if (numInnerClasses != 0) { | |
705 | 677 writeIndex(_innerClassesIndex); |
0 | 678 final int innerAttrLen = 2 /* number_of_inner_classes */ + |
679 numInnerClasses * ( | |
680 2 /* inner_class_info_index */ + | |
681 2 /* outer_class_info_index */ + | |
682 2 /* inner_class_name_index */ + | |
683 2 /* inner_class_access_flags */); | |
684 dos.writeInt(innerAttrLen); | |
685 | |
686 dos.writeShort(numInnerClasses); | |
687 if (DEBUG) debugMessage("class has " + numInnerClasses + " inner class entries"); | |
688 | |
689 for (int index = 0; index < numInnerClasses * 4; index++) { | |
690 dos.writeShort(innerClasses.getShortAt(index)); | |
691 } | |
692 } | |
693 } | |
694 } |