Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPool.java @ 1913:3b2dea75431e
6984311: JSR 292 needs optional bootstrap method parameters
Summary: Allow CONSTANT_InvokeDynamic nodes to have any number of extra operands.
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Sat, 30 Oct 2010 13:08:23 -0700 |
| parents | 083fde3b838e |
| children | dad31fc330cd |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 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 * | |
|
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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 | |
| 25 package sun.jvm.hotspot.oops; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 import sun.jvm.hotspot.utilities.*; | |
| 33 | |
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34 // A ConstantPool is an oop containing class constants |
| 0 | 35 // as described in the class file |
| 36 | |
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37 public class ConstantPool extends Oop implements ClassConstants { |
| 0 | 38 // Used for debugging this code |
| 39 private static final boolean DEBUG = false; | |
| 40 | |
| 41 protected void debugMessage(String message) { | |
| 42 System.out.println(message); | |
| 43 } | |
| 44 | |
| 45 static { | |
| 46 VM.registerVMInitializedObserver(new Observer() { | |
| 47 public void update(Observable o, Object data) { | |
| 48 initialize(VM.getVM().getTypeDataBase()); | |
| 49 } | |
| 50 }); | |
| 51 } | |
| 52 | |
| 53 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
| 54 Type type = db.lookupType("constantPoolOopDesc"); | |
| 55 tags = new OopField(type.getOopField("_tags"), 0); | |
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56 operands = new OopField(type.getOopField("_operands"), 0); |
| 0 | 57 cache = new OopField(type.getOopField("_cache"), 0); |
| 58 poolHolder = new OopField(type.getOopField("_pool_holder"), 0); | |
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59 length = new CIntField(type.getCIntegerField("_length"), 0); |
| 0 | 60 headerSize = type.getSize(); |
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61 elementSize = 0; |
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62 // fetch constants: |
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63 MULTI_OPERAND_COUNT_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_multi_operand_count_offset").intValue(); |
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64 MULTI_OPERAND_BASE_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_multi_operand_base_offset").intValue(); |
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65 INDY_BSM_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_bsm_offset").intValue(); |
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66 INDY_NT_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_nt_offset").intValue(); |
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67 INDY_ARGC_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_argc_offset").intValue(); |
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68 INDY_ARGV_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_argv_offset").intValue(); |
| 0 | 69 } |
| 70 | |
| 71 ConstantPool(OopHandle handle, ObjectHeap heap) { | |
| 72 super(handle, heap); | |
| 73 } | |
| 74 | |
| 75 public boolean isConstantPool() { return true; } | |
| 76 | |
| 77 private static OopField tags; | |
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78 private static OopField operands; |
| 0 | 79 private static OopField cache; |
| 80 private static OopField poolHolder; | |
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81 private static CIntField length; // number of elements in oop |
| 0 | 82 |
| 83 private static long headerSize; | |
| 84 private static long elementSize; | |
| 85 | |
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86 private static int MULTI_OPERAND_COUNT_OFFSET; |
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87 private static int MULTI_OPERAND_BASE_OFFSET; |
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88 private static int INDY_BSM_OFFSET; |
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89 private static int INDY_NT_OFFSET; |
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90 private static int INDY_ARGC_OFFSET; |
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91 private static int INDY_ARGV_OFFSET; |
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92 |
| 0 | 93 public TypeArray getTags() { return (TypeArray) tags.getValue(this); } |
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94 public TypeArray getOperands() { return (TypeArray) operands.getValue(this); } |
| 0 | 95 public ConstantPoolCache getCache() { return (ConstantPoolCache) cache.getValue(this); } |
| 96 public Klass getPoolHolder() { return (Klass) poolHolder.getValue(this); } | |
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97 public int getLength() { return (int)length.getValue(this); } |
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98 |
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99 private long getElementSize() { |
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100 if (elementSize !=0 ) { |
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101 return elementSize; |
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102 } else { |
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103 elementSize = VM.getVM().getOopSize(); |
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104 } |
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105 return elementSize; |
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106 } |
| 0 | 107 |
| 108 private long indexOffset(long index) { | |
| 109 if (Assert.ASSERTS_ENABLED) { | |
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110 Assert.that(index > 0 && index < getLength(), "invalid cp index " + index + " " + getLength()); |
| 0 | 111 } |
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112 return (index * getElementSize()) + headerSize; |
| 0 | 113 } |
| 114 | |
| 115 public ConstantTag getTagAt(long index) { | |
| 116 return new ConstantTag(getTags().getByteAt((int) index)); | |
| 117 } | |
| 118 | |
| 119 public Oop getObjAt(long index){ | |
| 120 return getHeap().newOop(getHandle().getOopHandleAt(indexOffset(index))); | |
| 121 } | |
| 122 | |
| 123 public Symbol getSymbolAt(long index) { | |
| 124 return (Symbol) getObjAt(index); | |
| 125 } | |
| 126 | |
| 127 public int getIntAt(long index){ | |
| 128 return getHandle().getJIntAt(indexOffset(index)); | |
| 129 } | |
| 130 | |
| 131 public float getFloatAt(long index){ | |
| 132 return getHandle().getJFloatAt(indexOffset(index)); | |
| 133 } | |
| 134 | |
| 135 public long getLongAt(long index) { | |
| 136 int oneHalf = getHandle().getJIntAt(indexOffset(index + 1)); | |
| 137 int otherHalf = getHandle().getJIntAt(indexOffset(index)); | |
| 138 // buildLongFromIntsPD accepts higher address value, lower address value | |
| 139 // in that order. | |
| 140 return VM.getVM().buildLongFromIntsPD(oneHalf, otherHalf); | |
| 141 } | |
| 142 | |
| 143 public double getDoubleAt(long index) { | |
| 144 return Double.longBitsToDouble(getLongAt(index)); | |
| 145 } | |
| 146 | |
| 147 public int getFieldOrMethodAt(int which) { | |
| 148 if (DEBUG) { | |
| 149 System.err.print("ConstantPool.getFieldOrMethodAt(" + which + "): new index = "); | |
| 150 } | |
| 151 int i = -1; | |
| 152 ConstantPoolCache cache = getCache(); | |
| 153 if (cache == null) { | |
| 154 i = which; | |
| 155 } else { | |
| 156 // change byte-ordering and go via cache | |
| 157 i = cache.getEntryAt(0xFFFF & VM.getVM().getBytes().swapShort((short) which)).getConstantPoolIndex(); | |
| 158 } | |
| 159 if (Assert.ASSERTS_ENABLED) { | |
| 160 Assert.that(getTagAt(i).isFieldOrMethod(), "Corrupted constant pool"); | |
| 161 } | |
| 162 if (DEBUG) { | |
| 163 System.err.println(i); | |
| 164 } | |
| 165 int res = getIntAt(i); | |
| 166 if (DEBUG) { | |
| 167 System.err.println("ConstantPool.getFieldOrMethodAt(" + i + "): result = " + res); | |
| 168 } | |
| 169 return res; | |
| 170 } | |
| 171 | |
| 1602 | 172 public int[] getNameAndTypeAt(int which) { |
| 0 | 173 if (Assert.ASSERTS_ENABLED) { |
| 174 Assert.that(getTagAt(which).isNameAndType(), "Corrupted constant pool"); | |
| 175 } | |
| 176 int i = getIntAt(which); | |
| 177 if (DEBUG) { | |
| 178 System.err.println("ConstantPool.getNameAndTypeAt(" + which + "): result = " + i); | |
| 179 } | |
| 1602 | 180 return new int[] { extractLowShortFromInt(i), extractHighShortFromInt(i) }; |
| 0 | 181 } |
| 182 | |
| 183 public Symbol getNameRefAt(int which) { | |
| 1602 | 184 int nameIndex = getNameAndTypeAt(getNameAndTypeRefIndexAt(which))[0]; |
| 0 | 185 return getSymbolAt(nameIndex); |
| 186 } | |
| 187 | |
| 188 public Symbol getSignatureRefAt(int which) { | |
| 1602 | 189 int sigIndex = getNameAndTypeAt(getNameAndTypeRefIndexAt(which))[1]; |
| 0 | 190 return getSymbolAt(sigIndex); |
| 191 } | |
| 192 | |
| 193 // returns null, if not resolved. | |
| 194 public Klass getKlassRefAt(int which) { | |
| 195 if( ! getTagAt(which).isKlass()) return null; | |
| 196 return (Klass) getObjAt(which); | |
| 197 } | |
| 198 | |
| 199 // returns null, if not resolved. | |
| 200 public InstanceKlass getFieldOrMethodKlassRefAt(int which) { | |
| 201 int refIndex = getFieldOrMethodAt(which); | |
| 202 int klassIndex = extractLowShortFromInt(refIndex); | |
| 203 return (InstanceKlass) getKlassRefAt(klassIndex); | |
| 204 } | |
| 205 | |
| 206 // returns null, if not resolved. | |
| 207 public Method getMethodRefAt(int which) { | |
| 208 InstanceKlass klass = getFieldOrMethodKlassRefAt(which); | |
| 209 if (klass == null) return null; | |
| 210 Symbol name = getNameRefAt(which); | |
| 211 Symbol sig = getSignatureRefAt(which); | |
| 212 return klass.findMethod(name, sig); | |
| 213 } | |
| 214 | |
| 215 // returns null, if not resolved. | |
| 216 public Field getFieldRefAt(int which) { | |
| 217 InstanceKlass klass = getFieldOrMethodKlassRefAt(which); | |
| 218 if (klass == null) return null; | |
| 219 Symbol name = getNameRefAt(which); | |
| 220 Symbol sig = getSignatureRefAt(which); | |
| 221 return klass.findField(name, sig); | |
| 222 } | |
| 223 | |
| 224 public int getNameAndTypeRefIndexAt(int index) { | |
| 225 int refIndex = getFieldOrMethodAt(index); | |
| 226 if (DEBUG) { | |
| 227 System.err.println("ConstantPool.getNameAndTypeRefIndexAt(" + index + "): refIndex = " + refIndex); | |
| 228 } | |
| 229 int i = extractHighShortFromInt(refIndex); | |
| 230 if (DEBUG) { | |
| 231 System.err.println("ConstantPool.getNameAndTypeRefIndexAt(" + index + "): result = " + i); | |
| 232 } | |
| 233 return i; | |
| 234 } | |
| 235 | |
| 236 /** Lookup for entries consisting of (name_index, signature_index) */ | |
| 237 public int getNameRefIndexAt(int index) { | |
| 1602 | 238 int[] refIndex = getNameAndTypeAt(index); |
| 0 | 239 if (DEBUG) { |
| 1602 | 240 System.err.println("ConstantPool.getNameRefIndexAt(" + index + "): refIndex = " + refIndex[0]+"/"+refIndex[1]); |
| 0 | 241 } |
| 1602 | 242 int i = refIndex[0]; |
| 0 | 243 if (DEBUG) { |
| 244 System.err.println("ConstantPool.getNameRefIndexAt(" + index + "): result = " + i); | |
| 245 } | |
| 246 return i; | |
| 247 } | |
| 248 | |
| 249 /** Lookup for entries consisting of (name_index, signature_index) */ | |
| 250 public int getSignatureRefIndexAt(int index) { | |
| 1602 | 251 int[] refIndex = getNameAndTypeAt(index); |
| 0 | 252 if (DEBUG) { |
| 1602 | 253 System.err.println("ConstantPool.getSignatureRefIndexAt(" + index + "): refIndex = " + refIndex[0]+"/"+refIndex[1]); |
| 0 | 254 } |
| 1602 | 255 int i = refIndex[1]; |
| 0 | 256 if (DEBUG) { |
| 257 System.err.println("ConstantPool.getSignatureRefIndexAt(" + index + "): result = " + i); | |
| 258 } | |
| 259 return i; | |
| 260 } | |
| 261 | |
| 1602 | 262 /** Lookup for MethodHandle entries. */ |
| 263 public int getMethodHandleIndexAt(int i) { | |
| 264 if (Assert.ASSERTS_ENABLED) { | |
| 265 Assert.that(getTagAt(i).isMethodHandle(), "Corrupted constant pool"); | |
| 266 } | |
| 267 int res = extractHighShortFromInt(getIntAt(i)); | |
| 268 if (DEBUG) { | |
| 269 System.err.println("ConstantPool.getMethodHandleIndexAt(" + i + "): result = " + res); | |
| 270 } | |
| 271 return res; | |
| 272 } | |
| 273 | |
| 274 /** Lookup for MethodHandle entries. */ | |
| 275 public int getMethodHandleRefKindAt(int i) { | |
| 276 if (Assert.ASSERTS_ENABLED) { | |
| 277 Assert.that(getTagAt(i).isMethodHandle(), "Corrupted constant pool"); | |
| 278 } | |
| 279 int res = extractLowShortFromInt(getIntAt(i)); | |
| 280 if (DEBUG) { | |
| 281 System.err.println("ConstantPool.getMethodHandleRefKindAt(" + i + "): result = " + res); | |
| 282 } | |
| 283 return res; | |
| 284 } | |
| 285 | |
| 286 /** Lookup for MethodType entries. */ | |
| 287 public int getMethodTypeIndexAt(int i) { | |
| 288 if (Assert.ASSERTS_ENABLED) { | |
| 289 Assert.that(getTagAt(i).isMethodType(), "Corrupted constant pool"); | |
| 290 } | |
| 291 int res = getIntAt(i); | |
| 292 if (DEBUG) { | |
| 293 System.err.println("ConstantPool.getMethodHandleTypeAt(" + i + "): result = " + res); | |
| 294 } | |
| 295 return res; | |
| 296 } | |
| 297 | |
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298 /** Lookup for multi-operand (InvokeDynamic) entries. */ |
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299 public int[] getMultiOperandsAt(int i) { |
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300 if (Assert.ASSERTS_ENABLED) { |
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301 Assert.that(getTagAt(i).isInvokeDynamic(), "Corrupted constant pool"); |
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302 } |
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303 int pos = this.getIntAt(i); |
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304 int countPos = pos + MULTI_OPERAND_COUNT_OFFSET; // == pos-1 |
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305 int basePos = pos + MULTI_OPERAND_BASE_OFFSET; // == pos |
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306 if (countPos < 0) return null; // safety first |
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307 TypeArray operands = getOperands(); |
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308 if (operands == null) return null; // safety first |
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309 int length = operands.getIntAt(countPos); |
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310 int[] values = new int[length]; |
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311 for (int j = 0; j < length; j++) { |
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312 values[j] = operands.getIntAt(basePos+j); |
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313 } |
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314 return values; |
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315 } |
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316 |
| 0 | 317 final private static String[] nameForTag = new String[] { |
| 318 }; | |
| 319 | |
| 320 private String nameForTag(int tag) { | |
| 321 switch (tag) { | |
| 322 case JVM_CONSTANT_Utf8: return "JVM_CONSTANT_Utf8"; | |
| 323 case JVM_CONSTANT_Unicode: return "JVM_CONSTANT_Unicode"; | |
| 324 case JVM_CONSTANT_Integer: return "JVM_CONSTANT_Integer"; | |
| 325 case JVM_CONSTANT_Float: return "JVM_CONSTANT_Float"; | |
| 326 case JVM_CONSTANT_Long: return "JVM_CONSTANT_Long"; | |
| 327 case JVM_CONSTANT_Double: return "JVM_CONSTANT_Double"; | |
| 328 case JVM_CONSTANT_Class: return "JVM_CONSTANT_Class"; | |
| 329 case JVM_CONSTANT_String: return "JVM_CONSTANT_String"; | |
| 330 case JVM_CONSTANT_Fieldref: return "JVM_CONSTANT_Fieldref"; | |
| 331 case JVM_CONSTANT_Methodref: return "JVM_CONSTANT_Methodref"; | |
| 332 case JVM_CONSTANT_InterfaceMethodref: return "JVM_CONSTANT_InterfaceMethodref"; | |
| 333 case JVM_CONSTANT_NameAndType: return "JVM_CONSTANT_NameAndType"; | |
| 1602 | 334 case JVM_CONSTANT_MethodHandle: return "JVM_CONSTANT_MethodHandle"; |
| 335 case JVM_CONSTANT_MethodType: return "JVM_CONSTANT_MethodType"; | |
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336 case JVM_CONSTANT_InvokeDynamic: return "JVM_CONSTANT_InvokeDynamic"; |
| 0 | 337 case JVM_CONSTANT_Invalid: return "JVM_CONSTANT_Invalid"; |
| 338 case JVM_CONSTANT_UnresolvedClass: return "JVM_CONSTANT_UnresolvedClass"; | |
| 1385 | 339 case JVM_CONSTANT_UnresolvedClassInError: return "JVM_CONSTANT_UnresolvedClassInError"; |
| 0 | 340 case JVM_CONSTANT_ClassIndex: return "JVM_CONSTANT_ClassIndex"; |
| 341 case JVM_CONSTANT_UnresolvedString: return "JVM_CONSTANT_UnresolvedString"; | |
| 342 case JVM_CONSTANT_StringIndex: return "JVM_CONSTANT_StringIndex"; | |
| 343 } | |
| 1385 | 344 throw new InternalError("Unknown tag: " + tag); |
| 0 | 345 } |
| 346 | |
| 347 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
| 348 super.iterateFields(visitor, doVMFields); | |
| 349 if (doVMFields) { | |
| 350 visitor.doOop(tags, true); | |
| 351 visitor.doOop(cache, true); | |
| 352 visitor.doOop(poolHolder, true); | |
| 353 | |
| 354 final int length = (int) getLength(); | |
| 355 // zero'th pool entry is always invalid. ignore it. | |
| 356 for (int index = 1; index < length; index++) { | |
| 357 int ctag = (int) getTags().getByteAt((int) index); | |
| 358 switch (ctag) { | |
| 359 case JVM_CONSTANT_ClassIndex: | |
| 360 case JVM_CONSTANT_StringIndex: | |
| 361 case JVM_CONSTANT_Integer: | |
| 362 visitor.doInt(new IntField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 363 break; | |
| 364 | |
| 365 case JVM_CONSTANT_Float: | |
| 366 visitor.doFloat(new FloatField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 367 break; | |
| 368 | |
| 369 case JVM_CONSTANT_Long: | |
| 370 visitor.doLong(new LongField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 371 // long entries occupy two slots | |
| 372 index++; | |
| 373 break; | |
| 374 | |
| 375 case JVM_CONSTANT_Double: | |
| 376 visitor.doDouble(new DoubleField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 377 // double entries occupy two slots | |
| 378 index++; | |
| 379 break; | |
| 380 | |
| 1385 | 381 case JVM_CONSTANT_UnresolvedClassInError: |
| 0 | 382 case JVM_CONSTANT_UnresolvedClass: |
| 383 case JVM_CONSTANT_Class: | |
| 384 case JVM_CONSTANT_UnresolvedString: | |
| 385 case JVM_CONSTANT_Utf8: | |
| 386 visitor.doOop(new OopField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 387 break; | |
| 388 | |
| 389 case JVM_CONSTANT_Fieldref: | |
| 390 case JVM_CONSTANT_Methodref: | |
| 391 case JVM_CONSTANT_InterfaceMethodref: | |
| 392 case JVM_CONSTANT_NameAndType: | |
| 1602 | 393 case JVM_CONSTANT_MethodHandle: |
| 394 case JVM_CONSTANT_MethodType: | |
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395 case JVM_CONSTANT_InvokeDynamic: |
| 0 | 396 visitor.doInt(new IntField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); |
| 397 break; | |
| 398 } | |
| 399 } | |
| 400 } | |
| 401 /* | |
| 402 int length = getLength(); | |
| 403 for (int index = 0; index < length; index++) { | |
| 404 long offset = baseOffset + (index + typeDataBase.getOopSize()); | |
| 405 visitor.doOop(new IndexableField(index, offset, false), getObjAt(index)); | |
| 406 } | |
| 407 */ | |
| 408 } | |
| 409 | |
| 410 public void writeBytes(OutputStream os) throws IOException { | |
| 411 // Map between any modified UTF-8 and it's constant pool index. | |
| 412 Map utf8ToIndex = new HashMap(); | |
| 413 DataOutputStream dos = new DataOutputStream(os); | |
| 414 TypeArray tags = getTags(); | |
| 415 int len = (int)getLength(); | |
| 416 int ci = 0; // constant pool index | |
| 417 | |
| 418 // collect all modified UTF-8 Strings from Constant Pool | |
| 419 | |
| 420 for (ci = 1; ci < len; ci++) { | |
| 421 byte cpConstType = tags.getByteAt(ci); | |
| 422 if(cpConstType == JVM_CONSTANT_Utf8) { | |
| 423 Symbol sym = getSymbolAt(ci); | |
| 424 utf8ToIndex.put(sym.asString(), new Short((short) ci)); | |
| 425 } | |
| 426 else if(cpConstType == JVM_CONSTANT_Long || | |
| 427 cpConstType == JVM_CONSTANT_Double) { | |
| 428 ci++; | |
| 429 } | |
| 430 } | |
| 431 | |
| 432 | |
| 433 for(ci = 1; ci < len; ci++) { | |
| 434 int cpConstType = (int)tags.getByteAt(ci); | |
| 435 // write cp_info | |
| 436 // write constant type | |
| 437 switch(cpConstType) { | |
| 438 case JVM_CONSTANT_Utf8: { | |
| 439 dos.writeByte(cpConstType); | |
| 440 Symbol sym = getSymbolAt(ci); | |
| 441 dos.writeShort((short)sym.getLength()); | |
| 442 dos.write(sym.asByteArray()); | |
| 443 if (DEBUG) debugMessage("CP[" + ci + "] = modified UTF-8 " + sym.asString()); | |
| 444 break; | |
| 445 } | |
| 446 | |
| 447 case JVM_CONSTANT_Unicode: | |
| 448 throw new IllegalArgumentException("Unicode constant!"); | |
| 449 | |
| 450 case JVM_CONSTANT_Integer: | |
| 451 dos.writeByte(cpConstType); | |
| 452 dos.writeInt(getIntAt(ci)); | |
| 453 if (DEBUG) debugMessage("CP[" + ci + "] = int " + getIntAt(ci)); | |
| 454 break; | |
| 455 | |
| 456 case JVM_CONSTANT_Float: | |
| 457 dos.writeByte(cpConstType); | |
| 458 dos.writeFloat(getFloatAt(ci)); | |
| 459 if (DEBUG) debugMessage("CP[" + ci + "] = float " + getFloatAt(ci)); | |
| 460 break; | |
| 461 | |
| 462 case JVM_CONSTANT_Long: { | |
| 463 dos.writeByte(cpConstType); | |
| 464 long l = getLongAt(ci); | |
| 465 // long entries occupy two pool entries | |
| 466 ci++; | |
| 467 dos.writeLong(l); | |
| 468 break; | |
| 469 } | |
| 470 | |
| 471 case JVM_CONSTANT_Double: | |
| 472 dos.writeByte(cpConstType); | |
| 473 dos.writeDouble(getDoubleAt(ci)); | |
| 474 // double entries occupy two pool entries | |
| 475 ci++; | |
| 476 break; | |
| 477 | |
| 478 case JVM_CONSTANT_Class: { | |
| 479 dos.writeByte(cpConstType); | |
| 480 // Klass already resolved. ConstantPool constains klassOop. | |
| 481 Klass refKls = (Klass) getObjAt(ci); | |
| 482 String klassName = refKls.getName().asString(); | |
| 483 Short s = (Short) utf8ToIndex.get(klassName); | |
| 484 dos.writeShort(s.shortValue()); | |
| 485 if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); | |
| 486 break; | |
| 487 } | |
| 488 | |
| 489 // case JVM_CONSTANT_ClassIndex: | |
| 1385 | 490 case JVM_CONSTANT_UnresolvedClassInError: |
| 0 | 491 case JVM_CONSTANT_UnresolvedClass: { |
| 492 dos.writeByte(JVM_CONSTANT_Class); | |
| 493 String klassName = getSymbolAt(ci).asString(); | |
| 494 Short s = (Short) utf8ToIndex.get(klassName); | |
| 495 dos.writeShort(s.shortValue()); | |
| 496 if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); | |
| 497 break; | |
| 498 } | |
| 499 | |
| 500 case JVM_CONSTANT_String: { | |
| 501 dos.writeByte(cpConstType); | |
| 502 String str = OopUtilities.stringOopToString(getObjAt(ci)); | |
| 503 Short s = (Short) utf8ToIndex.get(str); | |
| 504 dos.writeShort(s.shortValue()); | |
| 505 if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); | |
| 506 break; | |
| 507 } | |
| 508 | |
| 509 // case JVM_CONSTANT_StringIndex: | |
| 510 case JVM_CONSTANT_UnresolvedString: { | |
| 511 dos.writeByte(JVM_CONSTANT_String); | |
| 512 String val = getSymbolAt(ci).asString(); | |
| 513 | |
| 514 Short s = (Short) utf8ToIndex.get(val); | |
| 515 dos.writeShort(s.shortValue()); | |
| 516 if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); | |
| 517 break; | |
| 518 } | |
| 519 | |
| 520 // all external, internal method/field references | |
| 521 case JVM_CONSTANT_Fieldref: | |
| 522 case JVM_CONSTANT_Methodref: | |
| 523 case JVM_CONSTANT_InterfaceMethodref: { | |
| 524 dos.writeByte(cpConstType); | |
| 525 int value = getIntAt(ci); | |
| 526 short klassIndex = (short) extractLowShortFromInt(value); | |
| 527 short nameAndTypeIndex = (short) extractHighShortFromInt(value); | |
| 528 dos.writeShort(klassIndex); | |
| 529 dos.writeShort(nameAndTypeIndex); | |
| 530 if (DEBUG) debugMessage("CP[" + ci + "] = ref klass = " + | |
| 531 klassIndex + ", N&T = " + nameAndTypeIndex); | |
| 532 break; | |
| 533 } | |
| 534 | |
| 535 case JVM_CONSTANT_NameAndType: { | |
| 536 dos.writeByte(cpConstType); | |
| 537 int value = getIntAt(ci); | |
| 538 short nameIndex = (short) extractLowShortFromInt(value); | |
| 539 short signatureIndex = (short) extractHighShortFromInt(value); | |
| 540 dos.writeShort(nameIndex); | |
| 541 dos.writeShort(signatureIndex); | |
| 542 if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex | |
| 543 + ", type = " + signatureIndex); | |
| 544 break; | |
| 545 } | |
| 1602 | 546 |
| 547 case JVM_CONSTANT_MethodHandle: { | |
| 548 dos.writeByte(cpConstType); | |
| 549 int value = getIntAt(ci); | |
| 550 short nameIndex = (short) extractLowShortFromInt(value); | |
| 551 short signatureIndex = (short) extractHighShortFromInt(value); | |
| 552 dos.writeShort(nameIndex); | |
| 553 dos.writeShort(signatureIndex); | |
| 554 if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex | |
| 555 + ", type = " + signatureIndex); | |
| 556 break; | |
| 557 } | |
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558 |
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559 case JVM_CONSTANT_InvokeDynamic: { |
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560 dos.writeByte(cpConstType); |
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561 int[] values = getMultiOperandsAt(ci); |
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562 for (int vn = 0; vn < values.length; vn++) { |
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563 dos.writeShort(values[vn]); |
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564 } |
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565 int bootstrapMethodIndex = values[INDY_BSM_OFFSET]; |
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566 int nameAndTypeIndex = values[INDY_NT_OFFSET]; |
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567 int argumentCount = values[INDY_ARGC_OFFSET]; |
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568 assert(INDY_ARGV_OFFSET + argumentCount == values.length); |
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569 if (DEBUG) debugMessage("CP[" + ci + "] = indy BSM = " + bootstrapMethodIndex |
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570 + ", N&T = " + nameAndTypeIndex |
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571 + ", argc = " + argumentCount); |
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572 break; |
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573 } |
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574 |
| 1385 | 575 default: |
| 576 throw new InternalError("unknown tag: " + cpConstType); | |
| 0 | 577 } // switch |
| 578 } | |
| 579 dos.flush(); | |
| 580 return; | |
| 581 } | |
| 582 | |
| 583 public void printValueOn(PrintStream tty) { | |
| 584 tty.print("ConstantPool for " + getPoolHolder().getName().asString()); | |
| 585 } | |
| 586 | |
| 587 public long getObjectSize() { | |
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588 return alignObjectSize(headerSize + (getLength() * getElementSize())); |
| 0 | 589 } |
| 590 | |
| 591 //---------------------------------------------------------------------- | |
| 592 // Internals only below this point | |
| 593 // | |
| 594 | |
| 595 private static int extractHighShortFromInt(int val) { | |
| 1602 | 596 // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc. |
| 0 | 597 return (val >> 16) & 0xFFFF; |
| 598 } | |
| 599 | |
| 600 private static int extractLowShortFromInt(int val) { | |
| 1602 | 601 // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc. |
| 0 | 602 return val & 0xFFFF; |
| 603 } | |
| 604 } |