Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/HotSpotTypeDataBase.java @ 692:23276f80d930
6825642: nsk sajdi tests fail with NullPointerException
Reviewed-by: xlu, coleenp, kamg, swamyv
| author | acorn |
|---|---|
| date | Thu, 02 Apr 2009 14:26:42 -0400 |
| parents | f30ba3b36599 |
| children | 81a249214991 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 2000-2008 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.types.*; | |
| 31 import sun.jvm.hotspot.types.basic.*; | |
| 32 import sun.jvm.hotspot.utilities.*; | |
| 33 | |
| 34 /** <P> This is the cross-platform TypeDataBase used by the Oop | |
| 35 hierarchy. The decision was made to make this cross-platform by | |
| 36 having the VM export the necessary symbols via a built-in table; | |
| 37 see src/share/vm/runtime/vmStructs.[ch]pp for more details. </P> | |
| 38 | |
| 39 <P> <B>WARNING</B>: clients should refer to this class through the | |
| 40 TypeDataBase interface and not directly to the HotSpotTypeDataBase | |
| 41 type. </P> | |
| 42 | |
| 43 <P> NOTE: since we are fetching the sizes of the Java primitive types | |
| 44 */ | |
| 45 | |
| 46 public class HotSpotTypeDataBase extends BasicTypeDataBase { | |
| 47 private Debugger symbolLookup; | |
| 48 private String[] jvmLibNames; | |
| 49 private static final int UNINITIALIZED_SIZE = -1; | |
| 50 private static final int C_INT8_SIZE = 1; | |
| 51 private static final int C_INT32_SIZE = 4; | |
| 52 private static final int C_INT64_SIZE = 8; | |
| 53 | |
| 54 private static final boolean DEBUG; | |
| 55 static { | |
| 56 DEBUG = System.getProperty("sun.jvm.hotspot.HotSpotTypeDataBase.DEBUG") | |
| 57 != null; | |
| 58 } | |
| 59 | |
| 60 /** <P> This requires a SymbolLookup mechanism as well as the | |
| 61 MachineDescription. Note that we do not need a NameMangler since | |
| 62 we use the vmStructs mechanism to avoid looking up C++ | |
| 63 symbols. </P> | |
| 64 | |
| 65 <P> NOTE that it is guaranteed that this constructor will not | |
| 66 attempt to fetch any Java values from the remote process, only C | |
| 67 integers and addresses. This is required because we are fetching | |
| 68 the sizes of the Java primitive types from the remote process, | |
| 69 implying that attempting to fetch them before their sizes are | |
| 70 known is illegal. </P> | |
| 71 | |
| 72 <P> Throws NoSuchSymbolException if a problem occurred while | |
| 73 looking up one of the bootstrapping symbols related to the | |
| 74 VMStructs table in the remote VM; this may indicate that the | |
| 75 remote process is not actually a HotSpot VM. </P> | |
| 76 */ | |
| 77 public HotSpotTypeDataBase(MachineDescription machDesc, | |
| 78 VtblAccess vtblAccess, | |
| 79 Debugger symbolLookup, | |
| 80 String[] jvmLibNames) throws NoSuchSymbolException { | |
| 81 super(machDesc, vtblAccess); | |
| 82 this.symbolLookup = symbolLookup; | |
| 83 this.jvmLibNames = jvmLibNames; | |
| 84 | |
| 85 readVMTypes(); | |
| 86 initializePrimitiveTypes(); | |
| 87 readVMStructs(); | |
| 88 readVMIntConstants(); | |
| 89 readVMLongConstants(); | |
| 90 } | |
| 91 | |
| 92 private void readVMTypes() { | |
| 93 // Get the variables we need in order to traverse the VMTypeEntry[] | |
| 94 long typeEntryTypeNameOffset; | |
| 95 long typeEntrySuperclassNameOffset; | |
| 96 long typeEntryIsOopTypeOffset; | |
| 97 long typeEntryIsIntegerTypeOffset; | |
| 98 long typeEntryIsUnsignedOffset; | |
| 99 long typeEntrySizeOffset; | |
| 100 long typeEntryArrayStride; | |
| 101 | |
| 102 typeEntryTypeNameOffset = getLongValueFromProcess("gHotSpotVMTypeEntryTypeNameOffset"); | |
| 103 typeEntrySuperclassNameOffset = getLongValueFromProcess("gHotSpotVMTypeEntrySuperclassNameOffset"); | |
| 104 typeEntryIsOopTypeOffset = getLongValueFromProcess("gHotSpotVMTypeEntryIsOopTypeOffset"); | |
| 105 typeEntryIsIntegerTypeOffset = getLongValueFromProcess("gHotSpotVMTypeEntryIsIntegerTypeOffset"); | |
| 106 typeEntryIsUnsignedOffset = getLongValueFromProcess("gHotSpotVMTypeEntryIsUnsignedOffset"); | |
| 107 typeEntrySizeOffset = getLongValueFromProcess("gHotSpotVMTypeEntrySizeOffset"); | |
| 108 typeEntryArrayStride = getLongValueFromProcess("gHotSpotVMTypeEntryArrayStride"); | |
| 109 | |
| 110 // Fetch the address of the VMTypeEntry* | |
| 111 Address entryAddr = lookupInProcess("gHotSpotVMTypes"); | |
| 112 // System.err.println("gHotSpotVMTypes address = " + entryAddr); | |
| 113 // Dereference this once to get the pointer to the first VMTypeEntry | |
| 114 // dumpMemory(entryAddr, 80); | |
| 115 entryAddr = entryAddr.getAddressAt(0); | |
| 116 | |
| 117 if (entryAddr == null) { | |
| 118 throw new RuntimeException("gHotSpotVMTypes was not initialized properly in the remote process; can not continue"); | |
| 119 } | |
| 120 | |
| 121 // Start iterating down it until we find an entry with no name | |
| 122 Address typeNameAddr = null; | |
| 123 do { | |
| 124 // Fetch the type name first | |
| 125 typeNameAddr = entryAddr.getAddressAt(typeEntryTypeNameOffset); | |
| 126 if (typeNameAddr != null) { | |
| 127 String typeName = CStringUtilities.getString(typeNameAddr); | |
| 128 | |
| 129 String superclassName = null; | |
| 130 Address superclassNameAddr = entryAddr.getAddressAt(typeEntrySuperclassNameOffset); | |
| 131 if (superclassNameAddr != null) { | |
| 132 superclassName = CStringUtilities.getString(superclassNameAddr); | |
| 133 } | |
| 134 | |
| 135 boolean isOopType = (entryAddr.getCIntegerAt(typeEntryIsOopTypeOffset, C_INT32_SIZE, false) != 0); | |
| 136 boolean isIntegerType = (entryAddr.getCIntegerAt(typeEntryIsIntegerTypeOffset, C_INT32_SIZE, false) != 0); | |
| 137 boolean isUnsigned = (entryAddr.getCIntegerAt(typeEntryIsUnsignedOffset, C_INT32_SIZE, false) != 0); | |
| 138 long size = entryAddr.getCIntegerAt(typeEntrySizeOffset, C_INT64_SIZE, true); | |
| 139 | |
| 140 createType(typeName, superclassName, isOopType, isIntegerType, isUnsigned, size); | |
| 141 } | |
| 142 | |
| 143 entryAddr = entryAddr.addOffsetTo(typeEntryArrayStride); | |
| 144 } while (typeNameAddr != null); | |
| 145 } | |
| 146 | |
| 147 private void initializePrimitiveTypes() { | |
| 148 // Look up the needed primitive types by name...they had better be present | |
| 149 setJBooleanType(lookupPrimitiveType("jboolean")); | |
| 150 setJByteType (lookupPrimitiveType("jbyte")); | |
| 151 setJCharType (lookupPrimitiveType("jchar")); | |
| 152 setJDoubleType (lookupPrimitiveType("jdouble")); | |
| 153 setJFloatType (lookupPrimitiveType("jfloat")); | |
| 154 setJIntType (lookupPrimitiveType("jint")); | |
| 155 setJLongType (lookupPrimitiveType("jlong")); | |
| 156 setJShortType (lookupPrimitiveType("jshort")); | |
| 157 | |
| 158 // Indicate that these are the Java primitive types | |
| 159 ((BasicType) getJBooleanType()).setIsJavaPrimitiveType(true); | |
| 160 ((BasicType) getJByteType()).setIsJavaPrimitiveType(true); | |
| 161 ((BasicType) getJCharType()).setIsJavaPrimitiveType(true); | |
| 162 ((BasicType) getJDoubleType()).setIsJavaPrimitiveType(true); | |
| 163 ((BasicType) getJFloatType()).setIsJavaPrimitiveType(true); | |
| 164 ((BasicType) getJIntType()).setIsJavaPrimitiveType(true); | |
| 165 ((BasicType) getJLongType()).setIsJavaPrimitiveType(true); | |
| 166 ((BasicType) getJShortType()).setIsJavaPrimitiveType(true); | |
| 167 } | |
| 168 | |
| 169 private Type lookupPrimitiveType(String typeName) { | |
| 170 Type type = lookupType(typeName, false); | |
| 171 if (type == null) { | |
| 172 throw new RuntimeException("Error initializing the HotSpotDataBase: could not find the primitive type \"" + | |
| 173 typeName + "\" in the remote VM's VMStructs table. This type is required in " + | |
| 174 "order to determine the size of Java primitive types. Can not continue."); | |
| 175 } | |
| 176 return type; | |
| 177 } | |
| 178 | |
| 179 private void readVMStructs() { | |
| 180 // Get the variables we need in order to traverse the VMStructEntry[] | |
| 181 long structEntryTypeNameOffset; | |
| 182 long structEntryFieldNameOffset; | |
| 183 long structEntryTypeStringOffset; | |
| 184 long structEntryIsStaticOffset; | |
| 185 long structEntryOffsetOffset; | |
| 186 long structEntryAddressOffset; | |
| 187 long structEntryArrayStride; | |
| 188 | |
| 189 structEntryTypeNameOffset = getLongValueFromProcess("gHotSpotVMStructEntryTypeNameOffset"); | |
| 190 structEntryFieldNameOffset = getLongValueFromProcess("gHotSpotVMStructEntryFieldNameOffset"); | |
| 191 structEntryTypeStringOffset = getLongValueFromProcess("gHotSpotVMStructEntryTypeStringOffset"); | |
| 192 structEntryIsStaticOffset = getLongValueFromProcess("gHotSpotVMStructEntryIsStaticOffset"); | |
| 193 structEntryOffsetOffset = getLongValueFromProcess("gHotSpotVMStructEntryOffsetOffset"); | |
| 194 structEntryAddressOffset = getLongValueFromProcess("gHotSpotVMStructEntryAddressOffset"); | |
| 195 structEntryArrayStride = getLongValueFromProcess("gHotSpotVMStructEntryArrayStride"); | |
| 196 | |
| 197 // Fetch the address of the VMStructEntry* | |
| 198 Address entryAddr = lookupInProcess("gHotSpotVMStructs"); | |
| 199 // Dereference this once to get the pointer to the first VMStructEntry | |
| 200 entryAddr = entryAddr.getAddressAt(0); | |
| 201 if (entryAddr == null) { | |
| 202 throw new RuntimeException("gHotSpotVMStructs was not initialized properly in the remote process; can not continue"); | |
| 203 } | |
| 204 | |
| 205 // Start iterating down it until we find an entry with no name | |
| 206 Address fieldNameAddr = null; | |
| 207 String typeName = null; | |
| 208 String fieldName = null; | |
| 209 String typeString = null; | |
| 210 boolean isStatic = false; | |
| 211 long offset = 0; | |
| 212 Address staticFieldAddr = null; | |
| 213 long size = 0; | |
| 214 long index = 0; | |
| 215 String opaqueName = "<opaque>"; | |
| 216 lookupOrCreateClass(opaqueName, false, false, false); | |
| 217 | |
| 218 do { | |
| 219 // Fetch the field name first | |
| 220 fieldNameAddr = entryAddr.getAddressAt(structEntryFieldNameOffset); | |
| 221 if (fieldNameAddr != null) { | |
| 222 fieldName = CStringUtilities.getString(fieldNameAddr); | |
| 223 | |
| 224 // Now the rest of the names. Keep in mind that the type name | |
| 225 // may be NULL, indicating that the type is opaque. | |
| 226 Address addr = entryAddr.getAddressAt(structEntryTypeNameOffset); | |
| 227 if (addr == null) { | |
| 228 throw new RuntimeException("gHotSpotVMStructs unexpectedly had a NULL type name at index " + index); | |
| 229 } | |
| 230 typeName = CStringUtilities.getString(addr); | |
| 231 | |
| 232 addr = entryAddr.getAddressAt(structEntryTypeStringOffset); | |
| 233 if (addr == null) { | |
| 234 typeString = opaqueName; | |
| 235 } else { | |
| 236 typeString = CStringUtilities.getString(addr); | |
| 237 } | |
| 238 | |
| 239 isStatic = !(entryAddr.getCIntegerAt(structEntryIsStaticOffset, C_INT32_SIZE, false) == 0); | |
| 240 if (isStatic) { | |
| 241 staticFieldAddr = entryAddr.getAddressAt(structEntryAddressOffset); | |
| 242 offset = 0; | |
| 243 } else { | |
| 244 offset = entryAddr.getCIntegerAt(structEntryOffsetOffset, C_INT64_SIZE, true); | |
| 245 staticFieldAddr = null; | |
| 246 } | |
| 247 | |
| 248 // The containing Type must already be in the database -- no exceptions | |
| 249 BasicType containingType = lookupOrFail(typeName); | |
| 250 | |
| 251 // The field's Type must already be in the database -- no exceptions | |
| 252 BasicType fieldType = lookupOrFail(typeString); | |
| 253 | |
| 254 // Create field by type | |
| 255 createField(containingType, fieldName, fieldType, | |
| 256 isStatic, offset, staticFieldAddr); | |
| 257 } | |
| 258 | |
| 259 ++index; | |
| 260 entryAddr = entryAddr.addOffsetTo(structEntryArrayStride); | |
| 261 } while (fieldNameAddr != null); | |
| 262 } | |
| 263 | |
| 264 private void readVMIntConstants() { | |
| 265 // Get the variables we need in order to traverse the VMIntConstantEntry[] | |
| 266 long intConstantEntryNameOffset; | |
| 267 long intConstantEntryValueOffset; | |
| 268 long intConstantEntryArrayStride; | |
| 269 | |
| 270 intConstantEntryNameOffset = getLongValueFromProcess("gHotSpotVMIntConstantEntryNameOffset"); | |
| 271 intConstantEntryValueOffset = getLongValueFromProcess("gHotSpotVMIntConstantEntryValueOffset"); | |
| 272 intConstantEntryArrayStride = getLongValueFromProcess("gHotSpotVMIntConstantEntryArrayStride"); | |
| 273 | |
| 274 // Fetch the address of the VMIntConstantEntry* | |
| 275 Address entryAddr = lookupInProcess("gHotSpotVMIntConstants"); | |
| 276 // Dereference this once to get the pointer to the first VMIntConstantEntry | |
| 277 entryAddr = entryAddr.getAddressAt(0); | |
| 278 if (entryAddr == null) { | |
| 279 throw new RuntimeException("gHotSpotVMIntConstants was not initialized properly in the remote process; can not continue"); | |
| 280 } | |
| 281 | |
| 282 // Start iterating down it until we find an entry with no name | |
| 283 Address nameAddr = null; | |
| 284 do { | |
| 285 // Fetch the type name first | |
| 286 nameAddr = entryAddr.getAddressAt(intConstantEntryNameOffset); | |
| 287 if (nameAddr != null) { | |
| 288 String name = CStringUtilities.getString(nameAddr); | |
| 289 int value = (int) entryAddr.getCIntegerAt(intConstantEntryValueOffset, C_INT32_SIZE, false); | |
| 290 | |
| 291 // Be a little resilient | |
| 292 Integer oldValue = lookupIntConstant(name, false); | |
| 293 if (oldValue == null) { | |
| 294 addIntConstant(name, value); | |
| 295 } else { | |
| 296 if (oldValue.intValue() != value) { | |
| 297 throw new RuntimeException("Error: the integer constant \"" + name + | |
| 298 "\" had its value redefined (old was " + oldValue + | |
| 299 ", new is " + value + ". Aborting."); | |
| 300 } else { | |
| 301 System.err.println("Warning: the int constant \"" + name + "\" (declared in the remote VM in VMStructs::localHotSpotVMIntConstants) " + | |
| 302 "had its value declared as " + value + " twice. Continuing."); | |
| 303 } | |
| 304 } | |
| 305 } | |
| 306 | |
| 307 entryAddr = entryAddr.addOffsetTo(intConstantEntryArrayStride); | |
| 308 } while (nameAddr != null); | |
|
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6825642: nsk sajdi tests fail with NullPointerException
acorn
parents:
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diff
changeset
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309 String symbol = "heapOopSize"; // global int constant and value is initialized at runtime. |
|
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6825642: nsk sajdi tests fail with NullPointerException
acorn
parents:
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diff
changeset
|
310 addIntConstant(symbol, (int)lookupInProcess(symbol).getCIntegerAt(0, 4, false)); |
| 0 | 311 } |
| 312 | |
| 313 private void readVMLongConstants() { | |
| 314 // Get the variables we need in order to traverse the VMLongConstantEntry[] | |
| 315 long longConstantEntryNameOffset; | |
| 316 long longConstantEntryValueOffset; | |
| 317 long longConstantEntryArrayStride; | |
| 318 | |
| 319 longConstantEntryNameOffset = getLongValueFromProcess("gHotSpotVMLongConstantEntryNameOffset"); | |
| 320 longConstantEntryValueOffset = getLongValueFromProcess("gHotSpotVMLongConstantEntryValueOffset"); | |
| 321 longConstantEntryArrayStride = getLongValueFromProcess("gHotSpotVMLongConstantEntryArrayStride"); | |
| 322 | |
| 323 // Fetch the address of the VMLongConstantEntry* | |
| 324 Address entryAddr = lookupInProcess("gHotSpotVMLongConstants"); | |
| 325 // Dereference this once to get the pointer to the first VMLongConstantEntry | |
| 326 entryAddr = entryAddr.getAddressAt(0); | |
| 327 if (entryAddr == null) { | |
| 328 throw new RuntimeException("gHotSpotVMLongConstants was not initialized properly in the remote process; can not continue"); | |
| 329 } | |
| 330 | |
| 331 // Start iterating down it until we find an entry with no name | |
| 332 Address nameAddr = null; | |
| 333 do { | |
| 334 // Fetch the type name first | |
| 335 nameAddr = entryAddr.getAddressAt(longConstantEntryNameOffset); | |
| 336 if (nameAddr != null) { | |
| 337 String name = CStringUtilities.getString(nameAddr); | |
| 338 int value = (int) entryAddr.getCIntegerAt(longConstantEntryValueOffset, C_INT64_SIZE, true); | |
| 339 | |
| 340 // Be a little resilient | |
| 341 Long oldValue = lookupLongConstant(name, false); | |
| 342 if (oldValue == null) { | |
| 343 addLongConstant(name, value); | |
| 344 } else { | |
| 345 if (oldValue.longValue() != value) { | |
| 346 throw new RuntimeException("Error: the long constant \"" + name + | |
| 347 "\" had its value redefined (old was " + oldValue + | |
| 348 ", new is " + value + ". Aborting."); | |
| 349 } else { | |
| 350 System.err.println("Warning: the long constant \"" + name + "\" (declared in the remote VM in VMStructs::localHotSpotVMLongConstants) " + | |
| 351 "had its value declared as " + value + " twice. Continuing."); | |
| 352 } | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 entryAddr = entryAddr.addOffsetTo(longConstantEntryArrayStride); | |
| 357 } while (nameAddr != null); | |
| 358 } | |
| 359 | |
| 360 private BasicType lookupOrFail(String typeName) { | |
| 361 BasicType type = (BasicType) lookupType(typeName, false); | |
| 362 if (type == null) { | |
| 363 throw new RuntimeException("Type \"" + typeName + "\", referenced in VMStructs::localHotSpotVMStructs in the remote VM, " + | |
| 364 "was not present in the remote VMStructs::localHotSpotVMTypes table (should have been caught " + | |
| 365 "in the debug build of that VM). Can not continue."); | |
| 366 } | |
| 367 return type; | |
| 368 } | |
| 369 | |
| 370 private long getLongValueFromProcess(String symbol) { | |
| 371 return lookupInProcess(symbol).getCIntegerAt(0, C_INT64_SIZE, true); | |
| 372 } | |
| 373 | |
| 374 private Address lookupInProcess(String symbol) throws NoSuchSymbolException { | |
| 375 // FIXME: abstract away the loadobject name | |
| 376 for (int i = 0; i < jvmLibNames.length; i++) { | |
| 377 Address addr = symbolLookup.lookup(jvmLibNames[i], symbol); | |
| 378 if (addr != null) { | |
| 379 return addr; | |
| 380 } | |
| 381 } | |
| 382 String errStr = "("; | |
| 383 for (int i = 0; i < jvmLibNames.length; i++) { | |
| 384 errStr += jvmLibNames[i]; | |
| 385 if (i < jvmLibNames.length - 1) { | |
| 386 errStr += ", "; | |
| 387 } | |
| 388 } | |
| 389 errStr += ")"; | |
| 390 throw new NoSuchSymbolException(symbol, | |
| 391 "Could not find symbol \"" + symbol + | |
| 392 "\" in any of the known library names " + | |
| 393 errStr); | |
| 394 } | |
| 395 | |
| 396 private BasicType lookupOrCreateClass(String typeName, boolean isOopType, | |
| 397 boolean isIntegerType, boolean isUnsigned) { | |
| 398 BasicType type = (BasicType) lookupType(typeName, false); | |
| 399 if (type == null) { | |
| 400 // Create a new type | |
| 401 type = createBasicType(typeName, isOopType, isIntegerType, isUnsigned); | |
| 402 } | |
| 403 return type; | |
| 404 } | |
| 405 | |
| 406 /** Creates a new BasicType, initializes its size to -1 so we can | |
| 407 test to ensure that all types' sizes are initialized by VMTypes, | |
| 408 and adds it to the database. Takes care of initializing integer | |
| 409 and oop types properly. */ | |
| 410 private BasicType createBasicType(String typeName, boolean isOopType, | |
| 411 boolean isIntegerType, boolean isUnsigned) { | |
| 412 | |
| 413 BasicType type = null; | |
| 414 | |
| 415 if (isIntegerType) { | |
| 416 type = new BasicCIntegerType(this, typeName, isUnsigned); | |
| 417 } else { | |
| 418 if (typeNameIsPointerType(typeName)) { | |
| 419 type = recursiveCreateBasicPointerType(typeName); | |
| 420 } else { | |
| 421 type = new BasicType(this, typeName); | |
| 422 } | |
| 423 | |
| 424 if (isOopType) { | |
| 425 // HACK: turn markOop into a C integer type. This allows | |
| 426 // proper handling of it in the Serviceability Agent. (FIXME | |
| 427 // -- consider doing something different here) | |
| 428 if (typeName.equals("markOop")) { | |
| 429 type = new BasicCIntegerType(this, typeName, true); | |
| 430 } else { | |
| 431 type.setIsOopType(true); | |
| 432 } | |
| 433 } | |
| 434 } | |
| 435 | |
| 436 type.setSize(UNINITIALIZED_SIZE); | |
| 437 addType(type); | |
| 438 return type; | |
| 439 } | |
| 440 | |
| 441 /** Recursively creates a PointerType from the string representation | |
| 442 of the type's name. Note that this currently needs some | |
| 443 workarounds due to incomplete information in the VMStructs | |
| 444 database. */ | |
| 445 private BasicPointerType recursiveCreateBasicPointerType(String typeName) { | |
| 446 String targetTypeName = typeName.substring(0, typeName.lastIndexOf('*')).trim(); | |
| 447 Type targetType = null; | |
| 448 if (typeNameIsPointerType(targetTypeName)) { | |
| 449 targetType = recursiveCreateBasicPointerType(targetTypeName); | |
| 450 } else { | |
| 451 targetType = lookupType(targetTypeName, false); | |
| 452 if (targetType == null) { | |
| 453 // Workaround for missing C integer types in database. | |
| 454 // Also looks like we can't throw an exception for other | |
| 455 // missing target types because there are some in old | |
| 456 // VMStructs tables that didn't have the target type declared. | |
| 457 // For this case, we create basic types that never get filled | |
| 458 // in. | |
| 459 | |
| 460 if (targetTypeName.equals("char") || | |
| 461 targetTypeName.equals("const char")) { | |
| 462 // We don't have a representation of const-ness of C types in the SA | |
| 463 BasicType basicTargetType = createBasicType(targetTypeName, false, true, false); | |
| 464 basicTargetType.setSize(1); | |
| 465 targetType = basicTargetType; | |
| 466 } else if (targetTypeName.equals("u_char")) { | |
| 467 BasicType basicTargetType = createBasicType(targetTypeName, false, true, true); | |
| 468 basicTargetType.setSize(1); | |
| 469 targetType = basicTargetType; | |
| 470 } else { | |
| 471 if (DEBUG) { | |
| 472 System.err.println("WARNING: missing target type \"" + targetTypeName + "\" for pointer type \"" + typeName + "\""); | |
| 473 } | |
| 474 targetType = createBasicType(targetTypeName, false, false, false); | |
| 475 } | |
| 476 } | |
| 477 } | |
| 478 return new BasicPointerType(this, typeName, targetType); | |
| 479 } | |
| 480 | |
| 481 private boolean typeNameIsPointerType(String typeName) { | |
| 482 int i = typeName.length() - 1; | |
| 483 while (i >= 0 && Character.isWhitespace(typeName.charAt(i))) { | |
| 484 --i; | |
| 485 } | |
| 486 if (i >= 0 && typeName.charAt(i) == '*') { | |
| 487 return true; | |
| 488 } | |
| 489 return false; | |
| 490 } | |
| 491 | |
| 492 public void createType(String typeName, String superclassName, | |
| 493 boolean isOopType, boolean isIntegerType, | |
| 494 boolean isUnsigned, long size) { | |
| 495 // See whether we have a superclass | |
| 496 BasicType superclass = null; | |
| 497 if (superclassName != null) { | |
| 498 // Fetch or create it (FIXME: would get oop types wrong if | |
| 499 // they had a hierarchy; consider using lookupOrFail) | |
| 500 superclass = lookupOrCreateClass(superclassName, false, false, false); | |
| 501 } | |
| 502 | |
| 503 // Lookup or create the current type | |
| 504 BasicType curType = lookupOrCreateClass(typeName, isOopType, isIntegerType, isUnsigned); | |
| 505 // Set superclass and/or ensure it's correct | |
| 506 if (superclass != null) { | |
| 507 if (curType.getSuperclass() == null) { | |
| 508 // Set the superclass in the current type | |
| 509 curType.setSuperclass(superclass); | |
| 510 } | |
| 511 | |
| 512 if (curType.getSuperclass() != superclass) { | |
| 513 throw new RuntimeException("Error: the type \"" + typeName + "\" (declared in the remote VM in VMStructs::localHotSpotVMTypes) " + | |
| 514 "had its superclass redefined (old was " + curType.getSuperclass().getName() + ", new is " + | |
| 515 superclass.getName() + ")."); | |
| 516 } | |
| 517 } | |
| 518 | |
| 519 // Classes are created with a size of UNINITIALIZED_SIZE. | |
| 520 // Set size if necessary. | |
| 521 if (curType.getSize() == UNINITIALIZED_SIZE) { | |
| 522 curType.setSize(size); | |
| 523 } else { | |
| 524 if (curType.getSize() != size) { | |
| 525 throw new RuntimeException("Error: the type \"" + typeName + "\" (declared in the remote VM in VMStructs::localHotSpotVMTypes) " + | |
| 526 "had its size redefined (old was " + curType.getSize() + ", new is " + size + ")."); | |
| 527 } | |
| 528 | |
| 529 System.err.println("Warning: the type \"" + typeName + "\" (declared in the remote VM in VMStructs::localHotSpotVMTypes) " + | |
| 530 "had its size declared as " + size + " twice. Continuing."); | |
| 531 } | |
| 532 | |
| 533 } | |
| 534 | |
| 535 /** "Virtual constructor" for fields based on type */ | |
| 536 public void createField(BasicType containingType, | |
| 537 String name, Type type, boolean isStatic, | |
| 538 long offset, Address staticFieldAddress) { | |
| 539 // Add field to containing type | |
| 540 containingType.addField(internalCreateField(containingType, name, type, isStatic, offset, staticFieldAddress)); | |
| 541 } | |
| 542 | |
| 543 Field internalCreateField(BasicType containingType, | |
| 544 String name, Type type, boolean isStatic, | |
| 545 long offset, Address staticFieldAddress) { | |
| 546 // "Virtual constructor" based on type | |
| 547 if (type.isOopType()) { | |
| 548 return new BasicOopField(this, containingType, name, type, | |
| 549 isStatic, offset, staticFieldAddress); | |
| 550 } | |
| 551 | |
| 552 if (type instanceof CIntegerType) { | |
| 553 return new BasicCIntegerField(this, containingType, name, type, | |
| 554 isStatic, offset, staticFieldAddress); | |
| 555 } | |
| 556 | |
| 557 if (type.equals(getJBooleanType())) { | |
| 558 return new BasicJBooleanField(this, containingType, name, type, | |
| 559 isStatic, offset, staticFieldAddress); | |
| 560 } | |
| 561 | |
| 562 if (type.equals(getJByteType())) { | |
| 563 return new BasicJByteField(this, containingType, name, type, | |
| 564 isStatic, offset, staticFieldAddress); | |
| 565 } | |
| 566 | |
| 567 if (type.equals(getJCharType())) { | |
| 568 return new BasicJCharField(this, containingType, name, type, | |
| 569 isStatic, offset, staticFieldAddress); | |
| 570 } | |
| 571 | |
| 572 if (type.equals(getJDoubleType())) { | |
| 573 return new BasicJDoubleField(this, containingType, name, type, | |
| 574 isStatic, offset, staticFieldAddress); | |
| 575 } | |
| 576 | |
| 577 if (type.equals(getJFloatType())) { | |
| 578 return new BasicJFloatField(this, containingType, name, type, | |
| 579 isStatic, offset, staticFieldAddress); | |
| 580 } | |
| 581 | |
| 582 if (type.equals(getJIntType())) { | |
| 583 return new BasicJIntField(this, containingType, name, type, | |
| 584 isStatic, offset, staticFieldAddress); | |
| 585 } | |
| 586 | |
| 587 if (type.equals(getJLongType())) { | |
| 588 return new BasicJLongField(this, containingType, name, type, | |
| 589 isStatic, offset, staticFieldAddress); | |
| 590 } | |
| 591 | |
| 592 if (type.equals(getJShortType())) { | |
| 593 return new BasicJShortField(this, containingType, name, type, | |
| 594 isStatic, offset, staticFieldAddress); | |
| 595 } | |
| 596 | |
| 597 // Unknown ("opaque") type. Instantiate ordinary Field. | |
| 598 return new BasicField(this, containingType, name, type, | |
| 599 isStatic, offset, staticFieldAddress); | |
| 600 } | |
| 601 | |
| 602 // For debugging | |
| 603 private void dumpMemory(Address addr, int len) { | |
| 604 int i = 0; | |
| 605 while (i < len) { | |
| 606 System.err.print(addr.addOffsetTo(i) + ":"); | |
| 607 for (int j = 0; j < 8 && i < len; i++, j++) { | |
| 608 String s = Long.toHexString(addr.getCIntegerAt(i, 1, true)); | |
| 609 System.err.print(" 0x"); | |
| 610 for (int k = 0; k < 2 - s.length(); k++) { | |
| 611 System.err.print("0"); | |
| 612 } | |
| 613 System.err.print(s); | |
| 614 } | |
| 615 System.err.println(); | |
| 616 } | |
| 617 } | |
| 618 } |