Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/Frame.java @ 196:d1605aabd0a1 jdk7-b30
6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Wed, 02 Jul 2008 12:55:16 -0700 |
| parents | ba764ed4b6f2 |
| children | c18cbe5936b8 |
| 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.runtime; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.*; | |
| 30 import sun.jvm.hotspot.code.*; | |
| 31 import sun.jvm.hotspot.compiler.*; | |
| 32 import sun.jvm.hotspot.c1.*; | |
| 33 import sun.jvm.hotspot.debugger.*; | |
| 34 import sun.jvm.hotspot.interpreter.*; | |
| 35 import sun.jvm.hotspot.oops.*; | |
| 36 import sun.jvm.hotspot.types.*; | |
| 37 import sun.jvm.hotspot.utilities.*; | |
| 38 | |
| 39 /** <P> A frame represents a physical stack frame (an activation). | |
| 40 Frames can be C or Java frames, and the Java frames can be | |
| 41 interpreted or compiled. In contrast, vframes represent | |
| 42 source-level activations, so that one physical frame can | |
| 43 correspond to multiple source level frames because of inlining. | |
| 44 </P> | |
| 45 | |
| 46 <P> NOTE that this is not a VMObject and does not wrap an Address | |
| 47 -- this is an actual port of the VM's Frame code to Java. </P> | |
| 48 | |
| 49 <P> NOTE also that this is incomplete -- just trying to get | |
| 50 reading of interpreted frames working for now, so all non-core and | |
| 51 setter methods are removed for now. (FIXME) </P> */ | |
| 52 | |
| 53 public abstract class Frame implements Cloneable { | |
| 54 /** A raw stack pointer. The accessor getSP() will return a real (usable) | |
| 55 stack pointer (e.g. from Thread::last_Java_sp) */ | |
| 56 protected Address raw_sp; | |
| 57 | |
| 58 /** Program counter (the next instruction after the call) */ | |
| 59 protected Address pc; | |
| 60 protected boolean deoptimized; | |
| 61 | |
| 62 public Frame() { | |
| 63 deoptimized = false; | |
| 64 } | |
| 65 | |
| 66 static { | |
| 67 VM.registerVMInitializedObserver(new Observer() { | |
| 68 public void update(Observable o, Object data) { | |
| 69 initialize(VM.getVM().getTypeDataBase()); | |
| 70 } | |
| 71 }); | |
| 72 } | |
| 73 | |
| 74 /** Size of constMethodOopDesc for computing BCI from BCP (FIXME: hack) */ | |
| 75 private static long constMethodOopDescSize; | |
| 76 | |
| 77 private static synchronized void initialize(TypeDataBase db) { | |
| 78 Type constMethodOopType = db.lookupType("constMethodOopDesc"); | |
| 79 // FIXME: not sure whether alignment here is correct or how to | |
| 80 // force it (round up to address size?) | |
| 81 constMethodOopDescSize = constMethodOopType.getSize(); | |
| 82 } | |
| 83 | |
| 84 protected int bcpToBci(Address bcp, ConstMethod cm) { | |
| 85 // bcp will be null for interpreter native methods | |
| 86 // in addition depending on where we catch the system the value can | |
| 87 // be a bcp or a bci. | |
| 88 if (bcp == null) return 0; | |
| 89 long bci = bcp.minus(null); | |
| 90 if (bci >= 0 && bci < cm.getCodeSize()) return (int) bci; | |
| 91 return (int) (bcp.minus(cm.getHandle()) - constMethodOopDescSize); | |
| 92 } | |
| 93 | |
| 94 protected int bcpToBci(Address bcp, Method m) { | |
| 95 return bcpToBci(bcp, m.getConstMethod()); | |
| 96 } | |
| 97 | |
| 98 public abstract Object clone(); | |
| 99 | |
| 100 // Accessors | |
| 101 | |
| 102 /** pc: Returns the pc at which this frame will continue normally. | |
| 103 It must point at the beginning of the next instruction to | |
| 104 execute. */ | |
| 105 public Address getPC() { return pc; } | |
| 106 public void setPC(Address newpc) { pc = newpc; } | |
| 107 public boolean isDeoptimized() { return deoptimized; } | |
| 108 | |
| 109 public abstract Address getSP(); | |
| 110 public abstract Address getID(); | |
| 111 public abstract Address getFP(); | |
| 112 | |
| 113 /** testers -- platform dependent */ | |
| 114 public abstract boolean equals(Object arg); | |
| 115 | |
| 116 /** type testers */ | |
| 117 public boolean isInterpretedFrame() { return VM.getVM().getInterpreter().contains(getPC()); } | |
| 118 public boolean isJavaFrame() { | |
| 119 if (isInterpretedFrame()) return true; | |
| 120 if (!VM.getVM().isCore()) { | |
| 121 if (isCompiledFrame()) return true; | |
| 122 } | |
| 123 return false; | |
| 124 } | |
| 125 | |
| 126 /** Java frame called from C? */ | |
| 127 public boolean isEntryFrame() { return VM.getVM().getStubRoutines().returnsToCallStub(getPC()); } | |
| 128 public boolean isNativeFrame() { | |
| 129 if (!VM.getVM().isCore()) { | |
| 130 CodeBlob cb = VM.getVM().getCodeCache().findBlob(getPC()); | |
| 131 return (cb != null && cb.isNativeMethod()); | |
| 132 } else { | |
| 133 return false; | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 public boolean isCompiledFrame() { | |
| 138 if (Assert.ASSERTS_ENABLED) { | |
| 139 Assert.that(!VM.getVM().isCore(), "noncore builds only"); | |
| 140 } | |
| 141 CodeBlob cb = VM.getVM().getCodeCache().findBlob(getPC()); | |
| 142 return (cb != null && cb.isJavaMethod()); | |
| 143 } | |
| 144 | |
| 145 public boolean isGlueFrame() { | |
| 146 if (Assert.ASSERTS_ENABLED) { | |
| 147 Assert.that(!VM.getVM().isCore(), "noncore builds only"); | |
| 148 } | |
| 149 CodeBlob cb = VM.getVM().getCodeCache().findBlob(getPC()); | |
| 150 if (cb == null) { | |
| 151 return false; | |
| 152 } | |
| 153 if (cb.isRuntimeStub()) return true; | |
| 154 else return false; | |
| 155 } | |
| 156 | |
| 157 /** oldest frame? (has no sender) FIXME: this is modified from the | |
| 158 C++ code to handle the debugging situation where we try to | |
| 159 traverse the stack for, for example, the signal thread, and | |
| 160 don't find any valid Java frames. Would really like to put the | |
| 161 second half of the conditional in some sort of debugging-only if | |
| 162 statement. */ | |
| 163 // *** FIXME: THE CALL TO isJavaFrame() IS WAY TOO EXPENSIVE!!!!! *** | |
| 164 public boolean isFirstFrame() { return ((isEntryFrame() && entryFrameIsFirst()) || | |
| 165 (!isJavaFrame() && !hasSenderPD())); } | |
| 166 /** same for Java frame */ | |
| 167 public boolean isFirstJavaFrame() { throw new RuntimeException("not yet implemented"); } | |
| 168 | |
| 169 /** This is an addition for debugging purposes on platforms which | |
| 170 have the notion of signals. */ | |
| 171 public abstract boolean isSignalHandlerFrameDbg(); | |
| 172 | |
| 173 /** If this is a signal handler frame (again, on a platform with a | |
| 174 notion of signals), get the signal number. */ | |
| 175 public abstract int getSignalNumberDbg(); | |
| 176 | |
| 177 /** If this is a signal handler frame (again, on a platform with a | |
| 178 notion of signals), get the name of the signal. */ | |
| 179 public abstract String getSignalNameDbg(); | |
| 180 | |
| 181 /** performs sanity checks on interpreted frames. */ | |
| 182 public abstract boolean isInterpretedFrameValid(); | |
| 183 | |
| 184 /** tells whether this frame is marked for deoptimization */ | |
| 185 public boolean shouldBeDeoptimized() { throw new RuntimeException("not yet implemented"); } | |
| 186 | |
| 187 /** tells whether this frame can be deoptimized */ | |
| 188 public boolean canBeDeoptimized() { throw new RuntimeException("not yet implemented"); } | |
| 189 | |
| 190 /** returns the sending frame */ | |
| 191 public abstract Frame sender(RegisterMap map, CodeBlob nm); | |
| 192 | |
| 193 /** equivalent to sender(map, null) */ | |
| 194 public Frame sender(RegisterMap map) { return sender(map, null); } | |
| 195 | |
| 196 /** returns the sender, but skips conversion frames */ | |
| 197 public Frame realSender(RegisterMap map) { | |
| 198 if (!VM.getVM().isCore()) { | |
| 199 Frame result = sender(map); | |
| 200 while (result.isGlueFrame()) { | |
| 201 result = result.sender(map); | |
| 202 } | |
| 203 return result; | |
| 204 } else { | |
| 205 return sender(map); | |
| 206 } | |
| 207 } | |
| 208 | |
| 209 /** Platform-dependent query indicating whether this frame has a | |
| 210 sender. Should return true if it is possible to call sender() at | |
| 211 all on this frame. (This is currently only needed for the | |
| 212 debugging system, if a stack trace is attempted for a Java | |
| 213 thread which has no Java frames, i.e., the signal thread; we | |
| 214 have to know to stop traversal at the bottom frame.) */ | |
| 215 protected abstract boolean hasSenderPD(); | |
| 216 | |
| 217 //-------------------------------------------------------------------------------- | |
| 218 // All frames: | |
| 219 // A low-level interface for vframes: | |
| 220 | |
| 221 /** Returns the address of the requested "slot" on the stack. Slots | |
| 222 are as wide as addresses, so are 32 bits wide on a 32-bit | |
| 223 machine and 64 bits wide on a 64-bit machine. */ | |
| 224 public Address addressOfStackSlot(int slot) { return getFP().addOffsetTo(slot * VM.getVM().getAddressSize()); } | |
| 225 | |
| 226 /** Fetches the OopHandle at the requested slot */ | |
| 227 public OopHandle getOopHandleAt(int slot) { return addressOfStackSlot(slot).getOopHandleAt(0); } | |
| 228 /** Fetches the OopHandle at the slot, adjusted for compiler frames */ | |
| 229 // FIXME: looks like this is only used for compiled frames | |
| 230 // public OopHandle getOopHandleAtAdjusted(MethodOop method, int slot) { return addressOfStackSlot(slot).getOopHandleAt(0); } | |
| 231 // FIXME: Not yet implementable | |
| 232 // public void setOopHandleAt(int slot, OopHandle value) { addressOfStackSlot(slot).setOopHandleAt(0, value); } | |
| 233 | |
| 234 /** Fetches the (Java) int at the requested slot */ | |
| 235 public int getIntAt(int slot) { return addressOfStackSlot(slot).getJIntAt(0); } | |
| 236 // FIXME: Not yet implementable | |
| 237 // public void setIntAt(int slot, int value) { addressOfStackSlot(slot).setJIntAt(0, value); } | |
| 238 | |
| 239 /** returns the frame size in stack slots */ | |
| 240 public abstract long frameSize(); | |
| 241 | |
| 242 /** Link (i.e., the pointer to the previous frame) */ | |
| 243 public abstract Address getLink(); | |
| 244 // public abstract void setLink(Address addr); | |
| 245 | |
| 246 /** Return address */ | |
| 247 public abstract Address getSenderPC(); | |
| 248 // FIXME: currently unimplementable | |
| 249 // public abstract void setSenderPC(Address addr); | |
| 250 | |
| 251 /** The frame's original SP, before any extension by an interpreted | |
| 252 callee; used for packing debug info into vframeArray objects and | |
| 253 vframeArray lookup. */ | |
| 254 public abstract Address getUnextendedSP(); | |
| 255 | |
| 256 /** Returns the stack pointer of the calling frame */ | |
| 257 public abstract Address getSenderSP(); | |
| 258 | |
| 259 //-------------------------------------------------------------------------------- | |
| 260 // Interpreter frames: | |
| 261 // | |
| 262 | |
| 263 public abstract Address addressOfInterpreterFrameLocals(); | |
| 264 | |
| 265 public Address addressOfInterpreterFrameLocal(int slot) { | |
| 266 return addressOfInterpreterFrameLocals().getAddressAt(0).addOffsetTo(-slot * VM.getVM().getAddressSize()); | |
| 267 } | |
| 268 | |
| 269 // FIXME: not yet implementable | |
| 270 // void interpreter_frame_set_locals(intptr_t* locs); | |
| 271 | |
| 272 // NOTE that the accessor "addressOfInterpreterFrameBCX" has | |
| 273 // necessarily been eliminated. The byte code pointer is inherently | |
| 274 // an interior pointer to a Method (the bytecodes follow the | |
| 275 // methodOopDesc data structure) and therefore acquisition of it in | |
| 276 // this system can not be allowed. All accesses to interpreter frame | |
| 277 // byte codes are via the byte code index (BCI). | |
| 278 | |
| 279 /** Byte code index. In the underlying frame, what is actually | |
| 280 stored is a byte code pointer (BCP), which is converted to a BCI | |
| 281 and back by the GC when methods are moved. In this system, | |
| 282 interior pointers are not allowed, so we must make the access to | |
| 283 the interpreter frame's BCI atomic with respect to GC. This may | |
| 284 mean implementation with an underlying call through native code | |
| 285 into the VM or a magic sequence in the compiler. (FIXME) */ | |
| 286 public abstract int getInterpreterFrameBCI(); | |
| 287 // FIXME: not yet implementable | |
| 288 // public abstract void setInterpreterFrameBCI(int bci); | |
| 289 | |
| 290 // FIXME: elided for now | |
| 291 // public abstract Address addressOfInterpreterCalleeReceiver(Symbol signature); | |
| 292 | |
| 293 /** Find receiver for an invoke when arguments are just pushed on | |
| 294 stack (i.e., callee stack-frame is not setup) */ | |
| 295 // FIXME: elided for now | |
| 296 // public OopHandle getInterpreterCalleeReceiver(SymbolOop signature) { return addressOfInterpreterCalleeReceiver(signature).getOopHandleAt(0); } | |
| 297 | |
| 298 //-------------------------------------------------------------------------------- | |
| 299 // Expression stack (may go up or down, direction == 1 or -1) | |
| 300 // | |
| 301 | |
| 302 public abstract Address addressOfInterpreterFrameExpressionStack(); | |
| 303 public abstract int getInterpreterFrameExpressionStackDirection(); | |
| 304 public Address addressOfInterpreterFrameExpressionStackSlot(int slot) { | |
| 305 return addressOfInterpreterFrameExpressionStack().addOffsetTo(-slot * VM.getVM().getAddressSize()); | |
| 306 } | |
| 307 | |
| 308 /** Top of expression stack */ | |
| 309 public abstract Address addressOfInterpreterFrameTOS(); | |
| 310 | |
| 311 /** Expression stack from top down */ | |
| 312 public abstract Address addressOfInterpreterFrameTOSAt(int slot); | |
| 313 | |
| 314 /** FIXME: is this portable? */ | |
| 315 public int getInterpreterFrameExpressionStackSize() { | |
| 316 return (int) (1 + (getInterpreterFrameExpressionStackDirection() * | |
| 317 (addressOfInterpreterFrameTOS().minus(addressOfInterpreterFrameExpressionStack())))); | |
| 318 } | |
| 319 | |
| 320 public abstract Address getInterpreterFrameSenderSP(); | |
| 321 // FIXME: not yet implementable | |
| 322 // public abstract void setInterpreterFrameSenderSP(Address senderSP); | |
| 323 | |
| 324 //-------------------------------------------------------------------------------- | |
| 325 // BasicObjectLocks: | |
| 326 // | |
| 327 | |
| 328 public abstract BasicObjectLock interpreterFrameMonitorBegin(); | |
| 329 public abstract BasicObjectLock interpreterFrameMonitorEnd(); | |
| 330 /** NOTE: this returns a size in BYTES in this system! */ | |
| 331 public abstract int interpreterFrameMonitorSize(); | |
| 332 public BasicObjectLock nextMonitorInInterpreterFrame(BasicObjectLock cur) { | |
| 333 return new BasicObjectLock(cur.address().addOffsetTo(interpreterFrameMonitorSize())); | |
| 334 } | |
| 335 public BasicObjectLock previousMonitorInInterpreterFrame(BasicObjectLock cur) { | |
| 336 return new BasicObjectLock(cur.address().addOffsetTo(-1 * interpreterFrameMonitorSize())); | |
| 337 } | |
| 338 | |
| 339 // interpreter_frame_monitor_begin is higher in memory than interpreter_frame_monitor_end | |
| 340 // Interpreter_frame_monitor_begin points to one element beyond the oldest one, | |
| 341 // interpreter_frame_monitor_end points to the youngest one, or if there are none, | |
| 342 // it points to one beyond where the first element will be. | |
| 343 // interpreter_frame_monitor_size reports the allocation size of a monitor in the interpreter stack. | |
| 344 // this value is >= BasicObjectLock::size(), and may be rounded up | |
| 345 | |
| 346 // FIXME: avoiding implementing this for now if possible | |
| 347 // public void interpreter_frame_set_monitor_end(BasicObjectLock* value); | |
| 348 // public void interpreter_frame_verify_monitor(BasicObjectLock* value) const; | |
| 349 // | |
| 350 // Tells whether the current interpreter_frame frame pointer | |
| 351 // corresponds to the old compiled/deoptimized fp | |
| 352 // The receiver used to be a top level frame | |
| 353 // public boolean interpreter_frame_equals_unpacked_fp(intptr_t* fp); | |
| 354 | |
| 355 //-------------------------------------------------------------------------------- | |
| 356 // Method and constant pool cache: | |
| 357 // | |
| 358 | |
| 359 /** Current method */ | |
| 360 public abstract Address addressOfInterpreterFrameMethod(); | |
| 361 | |
| 362 /** Current method */ | |
| 363 public Method getInterpreterFrameMethod() { | |
| 364 return (Method) VM.getVM().getObjectHeap().newOop(addressOfInterpreterFrameMethod().getOopHandleAt(0)); | |
| 365 } | |
| 366 | |
| 367 /** Current method */ | |
| 368 // FIXME: not yet implementable | |
| 369 // public void setInterpreterFrameMethod(Method method); | |
| 370 | |
| 371 /** Constant pool cache */ | |
| 372 public abstract Address addressOfInterpreterFrameCPCache(); | |
| 373 /** Constant pool cache */ | |
| 374 public ConstantPoolCache getInterpreterFrameCPCache() { | |
| 375 return (ConstantPoolCache) VM.getVM().getObjectHeap().newOop(addressOfInterpreterFrameCPCache().getOopHandleAt(0)); | |
| 376 } | |
| 377 | |
| 378 //-------------------------------------------------------------------------------- | |
| 379 // Entry frames: | |
| 380 // | |
| 381 | |
| 382 public abstract JavaCallWrapper getEntryFrameCallWrapper(); | |
| 383 | |
| 384 // FIXME: add | |
| 385 // inline intptr_t* entry_frame_argument_at(int offset) const; | |
| 386 | |
| 387 | |
| 388 /** Tells whether there is another chunk of Delta stack above */ | |
| 389 public boolean entryFrameIsFirst() { return (getEntryFrameCallWrapper().getLastJavaSP() == null); } | |
| 390 | |
| 391 //-------------------------------------------------------------------------------- | |
| 392 // Safepoints: | |
| 393 // | |
| 394 | |
| 395 protected abstract Address addressOfSavedOopResult(); | |
| 396 protected abstract Address addressOfSavedReceiver(); | |
| 397 | |
| 398 public OopHandle getSavedOopResult() { | |
| 399 return addressOfSavedOopResult().getOopHandleAt(0); | |
| 400 } | |
| 401 | |
| 402 // FIXME: not yet implementable | |
| 403 // public void setSavedOopResult(OopHandle obj); | |
| 404 | |
| 405 public OopHandle getSavedReceiver() { | |
| 406 return addressOfSavedReceiver().getOopHandleAt(0); | |
| 407 } | |
| 408 | |
| 409 // FIXME: not yet implementable | |
| 410 // public void setSavedReceiver(OopHandle obj); | |
| 411 | |
| 412 //-------------------------------------------------------------------------------- | |
| 413 // Oop traversals: | |
| 414 // | |
| 415 | |
| 416 public void oopsInterpretedArgumentsDo(Symbol signature, boolean isStatic, AddressVisitor f) { | |
| 417 ArgumentOopFinder finder = new ArgumentOopFinder(signature, isStatic, this, f); | |
| 418 finder.oopsDo(); | |
| 419 } | |
| 420 | |
| 421 /** Conversion from an VMReg::Name to physical stack location */ | |
| 422 public Address oopMapRegToLocation(VMReg reg, RegisterMap regMap) { | |
| 423 VMReg stack0 = VM.getVM().getVMRegImplInfo().getStack0(); | |
| 424 if (reg.lessThan(stack0)) { | |
| 425 // If it is passed in a register, it got spilled in the stub frame. | |
| 426 return regMap.getLocation(reg); | |
| 427 } else { | |
| 428 long spOffset = VM.getVM().getAddressSize() * reg.minus(stack0); | |
| 429 return getUnextendedSP().addOffsetTo(spOffset); | |
| 430 } | |
| 431 } | |
| 432 | |
| 433 public void oopsDo(AddressVisitor oopVisitor, RegisterMap map) { | |
| 434 if (isInterpretedFrame()) { | |
| 435 oopsInterpretedDo(oopVisitor, map); | |
| 436 } else if (isEntryFrame()) { | |
| 437 oopsEntryDo(oopVisitor, map); | |
| 438 } else if (VM.getVM().getCodeCache().contains(getPC())) { | |
| 439 oopsCodeBlobDo(oopVisitor, map); | |
| 440 } else { | |
| 441 Assert.that(false, "should not reach here"); | |
| 442 } | |
| 443 } | |
| 444 | |
| 445 //-------------------------------------------------------------------------------- | |
| 446 // Printing code | |
| 447 // | |
| 448 | |
| 449 public void printValue() { | |
| 450 printValueOn(System.out); | |
| 451 } | |
| 452 | |
| 453 public void printValueOn(PrintStream tty) { | |
| 454 // FIXME; | |
| 455 } | |
| 456 | |
| 457 public void print() { | |
| 458 printOn(System.out); | |
| 459 } | |
| 460 | |
| 461 public void printOn(PrintStream tty) { | |
| 462 // FIXME; | |
| 463 } | |
| 464 | |
| 465 public void interpreterFramePrintOn(PrintStream tty) { | |
| 466 // FIXME; | |
| 467 } | |
| 468 | |
| 469 //-------------------------------------------------------------------------------- | |
| 470 // Get/set typed locals from a frame. | |
| 471 // Respects platform dependent word-ordering. | |
| 472 // | |
| 473 // FIXME: avoiding implementing this for now if possible | |
| 474 // | |
| 475 // Currently these work only for interpreted frames. | |
| 476 // Todo: make these work for compiled frames. | |
| 477 // | |
| 478 // oop get_local_object(jint slot) const; | |
| 479 // jint get_local_int (jint slot) const; | |
| 480 // jlong get_local_long (jint slot) const; | |
| 481 // jfloat get_local_float (jint slot) const; | |
| 482 // jdouble get_local_double(jint slot) const; | |
| 483 // | |
| 484 // void set_local_object(jint slot, oop obj); | |
| 485 // void set_local_int (jint slot, jint i); | |
| 486 // void set_local_long (jint slot, jlong l); | |
| 487 // void set_local_float (jint slot, jfloat f); | |
| 488 // void set_local_double(jint slot, jdouble d); | |
| 489 | |
| 490 // FIXME: add safepoint code, oops_do, etc. | |
| 491 // FIXME: NOT FINISHED | |
| 492 | |
| 493 | |
| 494 | |
| 495 | |
| 496 | |
| 497 //-------------------------------------------------------------------------------- | |
| 498 // Internals only below this point | |
| 499 // | |
| 500 | |
| 501 // /** Helper method for better factored code in frame::sender */ | |
| 502 // private frame sender_for_entry_frame(RegisterMap* map) { throw new RuntimeException("not yet implemented"); } | |
| 503 // private frame sender_for_interpreter_frame(RegisterMap* map) { throw new RuntimeException("not yet implemented"); } | |
| 504 | |
| 505 // | |
| 506 // Oop iteration (FIXME: NOT FINISHED) | |
| 507 // | |
| 508 | |
| 509 | |
| 510 private static class InterpVisitor implements OopMapVisitor { | |
| 511 private AddressVisitor addressVisitor; | |
| 512 | |
| 513 public InterpVisitor(AddressVisitor oopVisitor) { | |
| 514 setAddressVisitor(oopVisitor); | |
| 515 } | |
| 516 | |
| 517 public void setAddressVisitor(AddressVisitor addressVisitor) { | |
| 518 this.addressVisitor = addressVisitor; | |
| 519 } | |
| 520 | |
| 521 public void visitOopLocation(Address oopAddr) { | |
| 522 addressVisitor.visitAddress(oopAddr); | |
| 523 } | |
| 524 | |
| 525 public void visitDerivedOopLocation(Address baseOopAddr, Address derivedOopAddr) { | |
| 526 if (VM.getVM().isClientCompiler()) { | |
| 527 Assert.that(false, "should not reach here"); | |
| 528 } else if (VM.getVM().isServerCompiler() && | |
| 529 VM.getVM().useDerivedPointerTable()) { | |
| 530 Assert.that(false, "FIXME: add derived pointer table"); | |
| 531 } | |
| 532 } | |
| 533 | |
| 534 public void visitValueLocation(Address valueAddr) { | |
| 535 } | |
| 536 | |
|
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
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537 public void visitNarrowOopLocation(Address compOopAddr) { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
538 addressVisitor.visitCompOopAddress(compOopAddr); |
| 0 | 539 } |
| 540 } | |
| 541 | |
| 542 private void oopsInterpretedDo(AddressVisitor oopVisitor, RegisterMap map) { | |
| 543 if (Assert.ASSERTS_ENABLED) { | |
| 544 Assert.that(map != null, "map must be set"); | |
| 545 } | |
| 546 Method m = getInterpreterFrameMethod(); | |
| 547 int bci = getInterpreterFrameBCI(); | |
| 548 | |
| 549 // FIXME: Seeing this sometimes | |
| 550 if (VM.getVM().isDebugging()) { | |
| 551 if (bci < 0 || bci >= m.getCodeSize()) return; | |
| 552 } | |
| 553 | |
| 554 if (Assert.ASSERTS_ENABLED) { | |
| 555 // Assert.that(VM.getVM().getUniverse().heap().isIn(m), "method must be valid oop"); | |
| 556 Assert.that((m.isNative() && (bci == 0)) || ((bci >= 0) && (bci < m.getCodeSize())), "invalid bci value"); | |
| 557 } | |
| 558 | |
| 559 // Handle the monitor elements in the activation | |
| 560 // FIXME: monitor information not yet exposed | |
| 561 // for ( | |
| 562 // BasicObjectLock* current = interpreter_frame_monitor_end(); | |
| 563 // current < interpreter_frame_monitor_begin(); | |
| 564 // current = next_monitor_in_interpreter_frame(current) | |
| 565 // ) { | |
| 566 //#ifdef ASSERT | |
| 567 // interpreter_frame_verify_monitor(current); | |
| 568 //#endif | |
| 569 // current->oops_do(f); | |
| 570 // } | |
| 571 | |
| 572 // process fixed part | |
| 573 oopVisitor.visitAddress(addressOfInterpreterFrameMethod()); | |
| 574 oopVisitor.visitAddress(addressOfInterpreterFrameCPCache()); | |
| 575 | |
| 576 // FIXME: expose interpreterFrameMirrorOffset | |
| 577 // if (m.isNative() && m.isStatic()) { | |
| 578 // oopVisitor.visitAddress(getFP().addOffsetTo(interpreterFrameMirrorOffset)); | |
| 579 // } | |
| 580 | |
| 581 int maxLocals = (int) (m.isNative() ? m.getSizeOfParameters() : m.getMaxLocals()); | |
| 582 InterpreterFrameClosure blk = new InterpreterFrameClosure(this, maxLocals, (int) m.getMaxStack(), oopVisitor); | |
| 583 | |
| 584 // process locals & expression stack | |
| 585 OopMapCacheEntry mask = m.getMaskFor(bci); | |
| 586 mask.iterateOop(blk); | |
| 587 | |
| 588 // process a callee's arguments if we are at a call site | |
| 589 // (i.e., if we are at an invoke bytecode) | |
| 590 if (map.getIncludeArgumentOops() && !m.isNative()) { | |
| 591 BytecodeInvoke call = BytecodeInvoke.atCheck(m, bci); | |
| 592 if (call != null && getInterpreterFrameExpressionStackSize() > 0) { | |
| 593 // we are at a call site & the expression stack is not empty | |
| 594 // => process callee's arguments | |
| 595 // | |
| 596 // Note: The expression stack can be empty if an exception | |
| 597 // occured during method resolution/execution. In all | |
| 598 // cases we empty the expression stack completely be- | |
| 599 // fore handling the exception (the exception handling | |
| 600 // code in the interpreter calls a blocking runtime | |
| 601 // routine which can cause this code to be executed). | |
| 602 // (was bug gri 7/27/98) | |
| 603 oopsInterpretedArgumentsDo(call.signature(), call.isInvokestatic(), oopVisitor); | |
| 604 } | |
| 605 } | |
| 606 } | |
| 607 | |
| 608 private void oopsEntryDo (AddressVisitor oopVisitor, RegisterMap regMap) {} | |
| 609 private void oopsCodeBlobDo (AddressVisitor oopVisitor, RegisterMap regMap) { | |
| 610 CodeBlob cb = VM.getVM().getCodeCache().findBlob(getPC()); | |
| 611 if (Assert.ASSERTS_ENABLED) { | |
| 612 Assert.that(cb != null, "sanity check"); | |
| 613 } | |
| 614 if (cb.getOopMaps() != null) { | |
| 615 OopMapSet.oopsDo(this, cb, regMap, oopVisitor, VM.getVM().isDebugging()); | |
| 616 | |
| 617 // FIXME: add in traversal of argument oops (skipping this for | |
| 618 // now until we have the other stuff tested) | |
| 619 | |
| 620 } | |
| 621 | |
| 622 // FIXME: would add this in in non-debugging system | |
| 623 | |
| 624 // If we see an activation belonging to a non_entrant nmethod, we mark it. | |
| 625 // if (cb->is_nmethod() && ((nmethod *)cb)->is_not_entrant()) { | |
| 626 // ((nmethod*)cb)->mark_as_seen_on_stack(); | |
| 627 // } | |
| 628 } | |
| 629 | |
| 630 // FIXME: implement the above routines, plus add | |
| 631 // oops_interpreted_arguments_do and oops_compiled_arguments_do | |
| 632 } | |
| 633 | |
| 634 // | |
| 635 // Only used internally, to iterate through oop slots in interpreted | |
| 636 // frames | |
| 637 // | |
| 638 class InterpreterFrameClosure implements OffsetClosure { | |
| 639 // Used for debugging this code | |
| 640 private static final boolean DEBUG = false; | |
| 641 | |
| 642 private Frame fr; | |
| 643 private AddressVisitor f; | |
| 644 private int maxLocals; | |
| 645 private int maxStack; | |
| 646 | |
| 647 InterpreterFrameClosure(Frame fr, int maxLocals, int maxStack, AddressVisitor f) { | |
| 648 this.fr = fr; | |
| 649 this.maxLocals = maxLocals; | |
| 650 this.maxStack = maxStack; | |
| 651 this.f = f; | |
| 652 } | |
| 653 | |
| 654 public void offsetDo(int offset) { | |
| 655 if (DEBUG) { | |
| 656 System.err.println("Visiting offset " + offset + ", maxLocals = " + maxLocals + | |
| 657 " for frame " + fr + ", method " + | |
| 658 fr.getInterpreterFrameMethod().getMethodHolder().getName().asString() + | |
| 659 fr.getInterpreterFrameMethod().getName().asString()); | |
| 660 } | |
| 661 Address addr; | |
| 662 if (offset < maxLocals) { | |
| 663 addr = fr.addressOfInterpreterFrameLocal(offset); | |
| 664 if (Assert.ASSERTS_ENABLED) { | |
| 665 Assert.that(AddressOps.gte(addr, fr.getSP()), "must be inside the frame"); | |
| 666 } | |
| 667 if (DEBUG) { | |
| 668 System.err.println(" Visiting local at addr " + addr); | |
| 669 } | |
| 670 f.visitAddress(addr); | |
| 671 } else { | |
| 672 addr = fr.addressOfInterpreterFrameExpressionStackSlot(offset - maxLocals); | |
| 673 if (DEBUG) { | |
| 674 System.err.println(" Address of expression stack slot: " + addr + ", TOS = " + | |
| 675 fr.addressOfInterpreterFrameTOS()); | |
| 676 } | |
| 677 // In case of exceptions, the expression stack is invalid and the esp will be reset to express | |
| 678 // this condition. Therefore, we call f only if addr is 'inside' the stack (i.e., addr >= esp for Intel). | |
| 679 boolean inStack; | |
| 680 if (fr.getInterpreterFrameExpressionStackDirection() > 0) { | |
| 681 inStack = AddressOps.lte(addr, fr.addressOfInterpreterFrameTOS()); | |
| 682 } else { | |
| 683 inStack = AddressOps.gte(addr, fr.addressOfInterpreterFrameTOS()); | |
| 684 } | |
| 685 if (inStack) { | |
| 686 if (DEBUG) { | |
| 687 System.err.println(" In stack; visiting location."); | |
| 688 } | |
| 689 f.visitAddress(addr); | |
| 690 } else if (DEBUG) { | |
| 691 System.err.println(" *** WARNING: Address is out of bounds"); | |
| 692 } | |
| 693 } | |
| 694 } | |
| 695 } | |
| 696 | |
| 697 // Only used internally, to find arguments in interpreted frames | |
| 698 class ArgumentOopFinder extends SignatureInfo { | |
| 699 private AddressVisitor f; | |
| 700 private int offset; | |
| 701 private boolean isStatic; | |
| 702 private Frame fr; | |
| 703 | |
| 704 protected void set(int size, int type) { | |
| 705 offset -= size; | |
| 706 if (type == BasicType.getTObject() || type == BasicType.getTArray()) oopOffsetDo(); | |
| 707 } | |
| 708 | |
| 709 private void oopOffsetDo() { | |
| 710 f.visitAddress(fr.addressOfInterpreterFrameTOSAt(offset)); | |
| 711 } | |
| 712 | |
| 713 public ArgumentOopFinder(Symbol signature, boolean isStatic, Frame fr, AddressVisitor f) { | |
| 714 super(signature); | |
| 715 | |
| 716 // compute size of arguments | |
| 717 int argsSize = new ArgumentSizeComputer(signature).size() + (isStatic ? 0 : 1); | |
| 718 if (Assert.ASSERTS_ENABLED) { | |
| 719 Assert.that(!fr.isInterpretedFrame() || | |
| 720 argsSize <= fr.getInterpreterFrameExpressionStackSize(), "args cannot be on stack anymore"); | |
| 721 } | |
| 722 // initialize ArgumentOopFinder | |
| 723 this.f = f; | |
| 724 this.fr = fr; | |
| 725 this.offset = argsSize; | |
| 726 this.isStatic = isStatic; | |
| 727 } | |
| 728 | |
| 729 public void oopsDo() { | |
| 730 if (!isStatic) { | |
| 731 --offset; | |
| 732 oopOffsetDo(); | |
| 733 } | |
| 734 iterateParameters(); | |
| 735 } | |
| 736 } |