Mercurial > hg > graal-compiler

comparison agent/src/share/classes/sun/jvm/hotspot/runtime/x86/X86Frame.java @ 0:a61af66fc99e jdk7-b24

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children c18cbe5936b8
comparison
equal deleted inserted replaced
-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2001-2006 Sun Microsystems, Inc. All Rights Reserved.
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.x86;
26
27 import java.util.*;
28 import sun.jvm.hotspot.asm.x86.*;
29 import sun.jvm.hotspot.code.*;
30 import sun.jvm.hotspot.compiler.*;
31 import sun.jvm.hotspot.debugger.*;
32 import sun.jvm.hotspot.oops.*;
33 import sun.jvm.hotspot.runtime.*;
34 import sun.jvm.hotspot.types.*;
35 import sun.jvm.hotspot.utilities.*;
36
37 /** Specialization of and implementation of abstract methods of the
38 Frame class for the x86 family of CPUs. */
39
40 public class X86Frame extends Frame {
41 private static final boolean DEBUG;
42 static {
43 DEBUG = System.getProperty("sun.jvm.hotspot.runtime.x86.X86Frame.DEBUG") != null;
44 }
45
46 // All frames
47 private static final int LINK_OFFSET = 0;
48 private static final int RETURN_ADDR_OFFSET = 1;
49 private static final int SENDER_SP_OFFSET = 2;
50
51 // Interpreter frames
52 private static final int INTERPRETER_FRAME_MIRROR_OFFSET = 2; // for native calls only
53 private static final int INTERPRETER_FRAME_SENDER_SP_OFFSET = -1;
54 private static final int INTERPRETER_FRAME_LAST_SP_OFFSET = INTERPRETER_FRAME_SENDER_SP_OFFSET - 1;
55 private static final int INTERPRETER_FRAME_METHOD_OFFSET = INTERPRETER_FRAME_LAST_SP_OFFSET - 1;
56 private static int INTERPRETER_FRAME_MDX_OFFSET; // Non-core builds only
57 private static int INTERPRETER_FRAME_CACHE_OFFSET;
58 private static int INTERPRETER_FRAME_LOCALS_OFFSET;
59 private static int INTERPRETER_FRAME_BCX_OFFSET;
60 private static int INTERPRETER_FRAME_INITIAL_SP_OFFSET;
61 private static int INTERPRETER_FRAME_MONITOR_BLOCK_TOP_OFFSET;
62 private static int INTERPRETER_FRAME_MONITOR_BLOCK_BOTTOM_OFFSET;
63
64 // Entry frames
65 private static final int ENTRY_FRAME_CALL_WRAPPER_OFFSET = 2;
66
67 // Native frames
68 private static final int NATIVE_FRAME_INITIAL_PARAM_OFFSET = 2;
69
70 static {
71 VM.registerVMInitializedObserver(new Observer() {
72 public void update(Observable o, Object data) {
73 initialize(VM.getVM().getTypeDataBase());
74 }
75 });
76 }
77
78 private static synchronized void initialize(TypeDataBase db) {
79 if (VM.getVM().isCore()) {
80 INTERPRETER_FRAME_CACHE_OFFSET = INTERPRETER_FRAME_METHOD_OFFSET - 1;
81 } else {
82 INTERPRETER_FRAME_MDX_OFFSET = INTERPRETER_FRAME_METHOD_OFFSET - 1;
83 INTERPRETER_FRAME_CACHE_OFFSET = INTERPRETER_FRAME_MDX_OFFSET - 1;
84 }
85 INTERPRETER_FRAME_LOCALS_OFFSET = INTERPRETER_FRAME_CACHE_OFFSET - 1;
86 INTERPRETER_FRAME_BCX_OFFSET = INTERPRETER_FRAME_LOCALS_OFFSET - 1;
87 INTERPRETER_FRAME_INITIAL_SP_OFFSET = INTERPRETER_FRAME_BCX_OFFSET - 1;
88 INTERPRETER_FRAME_MONITOR_BLOCK_TOP_OFFSET = INTERPRETER_FRAME_INITIAL_SP_OFFSET;
89 INTERPRETER_FRAME_MONITOR_BLOCK_BOTTOM_OFFSET = INTERPRETER_FRAME_INITIAL_SP_OFFSET;
90 }
91
92 // an additional field beyond sp and pc:
93 Address raw_fp; // frame pointer
94 private Address raw_unextendedSP;
95
96 private X86Frame() {
97 }
98
99 private void adjustForDeopt() {
100 if ( pc != null) {
101 // Look for a deopt pc and if it is deopted convert to original pc
102 CodeBlob cb = VM.getVM().getCodeCache().findBlob(pc);
103 if (cb != null && cb.isJavaMethod()) {
104 NMethod nm = (NMethod) cb;
105 if (pc.equals(nm.deoptBegin())) {
106 if (Assert.ASSERTS_ENABLED) {
107 Assert.that(this.getUnextendedSP() != null, "null SP in Java frame");
108 }
109 // adjust pc if frame is deoptimized.
110 pc = this.getUnextendedSP().getAddressAt(nm.origPCOffset());
111 deoptimized = true;
112 }
113 }
114 }
115 }
116
117 public X86Frame(Address raw_sp, Address raw_fp, Address pc) {
118 this.raw_sp = raw_sp;
119 this.raw_unextendedSP = raw_sp;
120 this.raw_fp = raw_fp;
121 this.pc = pc;
122
123 // Frame must be fully constructed before this call
124 adjustForDeopt();
125
126 if (DEBUG) {
127 System.out.println("X86Frame(sp, fp, pc): " + this);
128 dumpStack();
129 }
130 }
131
132 public X86Frame(Address raw_sp, Address raw_fp) {
133 this.raw_sp = raw_sp;
134 this.raw_unextendedSP = raw_sp;
135 this.raw_fp = raw_fp;
136 this.pc = raw_sp.getAddressAt(-1 * VM.getVM().getAddressSize());
137
138 // Frame must be fully constructed before this call
139 adjustForDeopt();
140
141 if (DEBUG) {
142 System.out.println("X86Frame(sp, fp): " + this);
143 dumpStack();
144 }
145 }
146
147 // This constructor should really take the unextended SP as an arg
148 // but then the constructor is ambiguous with constructor that takes
149 // a PC so take an int and convert it.
150 public X86Frame(Address raw_sp, Address raw_fp, long extension) {
151 this.raw_sp = raw_sp;
152 if (raw_sp == null) {
153 this.raw_unextendedSP = null;
154 } else {
155 this.raw_unextendedSP = raw_sp.addOffsetTo(extension);
156 }
157 this.raw_fp = raw_fp;
158 this.pc = raw_sp.getAddressAt(-1 * VM.getVM().getAddressSize());
159
160 // Frame must be fully constructed before this call
161 adjustForDeopt();
162
163 if (DEBUG) {
164 System.out.println("X86Frame(sp, fp): " + this);
165 dumpStack();
166 }
167
168 }
169
170 public Object clone() {
171 X86Frame frame = new X86Frame();
172 frame.raw_sp = raw_sp;
173 frame.raw_unextendedSP = raw_unextendedSP;
174 frame.raw_fp = raw_fp;
175 frame.raw_fp = raw_fp;
176 frame.pc = pc;
177 frame.deoptimized = deoptimized;
178 return frame;
179 }
180
181 public boolean equals(Object arg) {
182 if (arg == null) {
183 return false;
184 }
185
186 if (!(arg instanceof X86Frame)) {
187 return false;
188 }
189
190 X86Frame other = (X86Frame) arg;
191
192 return (AddressOps.equal(getSP(), other.getSP()) &&
193 AddressOps.equal(getUnextendedSP(), other.getUnextendedSP()) &&
194 AddressOps.equal(getFP(), other.getFP()) &&
195 AddressOps.equal(getPC(), other.getPC()));
196 }
197
198 public int hashCode() {
199 if (raw_sp == null) {
200 return 0;
201 }
202
203 return raw_sp.hashCode();
204 }
205
206 public String toString() {
207 return "sp: " + (getSP() == null? "null" : getSP().toString()) +
208 ", unextendedSP: " + (getUnextendedSP() == null? "null" : getUnextendedSP().toString()) +
209 ", fp: " + (getFP() == null? "null" : getFP().toString()) +
210 ", pc: " + (pc == null? "null" : pc.toString());
211 }
212
213 // accessors for the instance variables
214 public Address getFP() { return raw_fp; }
215 public Address getSP() { return raw_sp; }
216 public Address getID() { return raw_sp; }
217
218 // FIXME: not implemented yet (should be done for Solaris/X86)
219 public boolean isSignalHandlerFrameDbg() { return false; }
220 public int getSignalNumberDbg() { return 0; }
221 public String getSignalNameDbg() { return null; }
222
223 public boolean isInterpretedFrameValid() {
224 if (Assert.ASSERTS_ENABLED) {
225 Assert.that(isInterpretedFrame(), "Not an interpreted frame");
226 }
227
228 // These are reasonable sanity checks
229 if (getFP() == null || getFP().andWithMask(0x3) != null) {
230 return false;
231 }
232
233 if (getSP() == null || getSP().andWithMask(0x3) != null) {
234 return false;
235 }
236
237 if (getFP().addOffsetTo(INTERPRETER_FRAME_INITIAL_SP_OFFSET * VM.getVM().getAddressSize()).lessThan(getSP())) {
238 return false;
239 }
240
241 // These are hacks to keep us out of trouble.
242 // The problem with these is that they mask other problems
243 if (getFP().lessThanOrEqual(getSP())) {
244 // this attempts to deal with unsigned comparison above
245 return false;
246 }
247
248 if (getFP().minus(getSP()) > 4096 * VM.getVM().getAddressSize()) {
249 // stack frames shouldn't be large.
250 return false;
251 }
252
253 return true;
254 }
255
256 // FIXME: not applicable in current system
257 // void patch_pc(Thread* thread, address pc);
258
259 public Frame sender(RegisterMap regMap, CodeBlob cb) {
260 X86RegisterMap map = (X86RegisterMap) regMap;
261
262 if (Assert.ASSERTS_ENABLED) {
263 Assert.that(map != null, "map must be set");
264 }
265
266 // Default is we done have to follow them. The sender_for_xxx will
267 // update it accordingly
268 map.setIncludeArgumentOops(false);
269
270 if (isEntryFrame()) return senderForEntryFrame(map);
271 if (isInterpretedFrame()) return senderForInterpreterFrame(map);
272
273 if (!VM.getVM().isCore()) {
274 if(cb == null) {
275 cb = VM.getVM().getCodeCache().findBlob(getPC());
276 } else {
277 if (Assert.ASSERTS_ENABLED) {
278 Assert.that(cb.equals(VM.getVM().getCodeCache().findBlob(getPC())), "Must be the same");
279 }
280 }
281
282 if (cb != null) {
283 return senderForCompiledFrame(map, cb);
284 }
285 }
286
287 // Must be native-compiled frame, i.e. the marshaling code for native
288 // methods that exists in the core system.
289 return new X86Frame(getSenderSP(), getLink(), getSenderPC());
290 }
291
292 private Frame senderForEntryFrame(X86RegisterMap map) {
293 if (Assert.ASSERTS_ENABLED) {
294 Assert.that(map != null, "map must be set");
295 }
296 // Java frame called from C; skip all C frames and return top C
297 // frame of that chunk as the sender
298 X86JavaCallWrapper jcw = (X86JavaCallWrapper) getEntryFrameCallWrapper();
299 if (Assert.ASSERTS_ENABLED) {
300 Assert.that(!entryFrameIsFirst(), "next Java fp must be non zero");
301 Assert.that(jcw.getLastJavaSP().greaterThan(getSP()), "must be above this frame on stack");
302 }
303 X86Frame fr;
304 if (jcw.getLastJavaPC() != null) {
305 fr = new X86Frame(jcw.getLastJavaSP(), jcw.getLastJavaFP(), jcw.getLastJavaPC());
306 } else {
307 fr = new X86Frame(jcw.getLastJavaSP(), jcw.getLastJavaFP());
308 }
309 map.clear();
310 if (Assert.ASSERTS_ENABLED) {
311 Assert.that(map.getIncludeArgumentOops(), "should be set by clear");
312 }
313 return fr;
314 }
315
316 private Frame senderForInterpreterFrame(X86RegisterMap map) {
317 Address unextendedSP = addressOfStackSlot(INTERPRETER_FRAME_SENDER_SP_OFFSET).getAddressAt(0);
318 Address sp = addressOfStackSlot(SENDER_SP_OFFSET);
319 // We do not need to update the callee-save register mapping because above
320 // us is either another interpreter frame or a converter-frame, but never
321 // directly a compiled frame.
322 // 11/24/04 SFG. With the removal of adapter frames this is no longer true.
323 // However c2 no longer uses callee save register for java calls so there
324 // are no callee register to find.
325
326 return new X86Frame(sp, getLink(), unextendedSP.minus(sp));
327 }
328
329 private Frame senderForCompiledFrame(X86RegisterMap map, CodeBlob cb) {
330 //
331 // NOTE: some of this code is (unfortunately) duplicated in X86CurrentFrameGuess
332 //
333
334 if (Assert.ASSERTS_ENABLED) {
335 Assert.that(map != null, "map must be set");
336 }
337
338 // frame owned by optimizing compiler
339 Address sender_sp = null;
340
341 if (VM.getVM().isClientCompiler()) {
342 sender_sp = addressOfStackSlot(SENDER_SP_OFFSET);
343 } else {
344 if (Assert.ASSERTS_ENABLED) {
345 Assert.that(cb.getFrameSize() >= 0, "Compiled by Compiler1: do not use");
346 }
347 sender_sp = getUnextendedSP().addOffsetTo(cb.getFrameSize());
348 }
349
350 // On Intel the return_address is always the word on the stack
351 Address sender_pc = sender_sp.getAddressAt(-1 * VM.getVM().getAddressSize());
352
353 if (map.getUpdateMap() && cb.getOopMaps() != null) {
354 OopMapSet.updateRegisterMap(this, cb, map, true);
355 }
356
357 if (VM.getVM().isClientCompiler()) {
358 // Move this here for C1 and collecting oops in arguments (According to Rene)
359 map.setIncludeArgumentOops(cb.callerMustGCArguments(map.getThread()));
360 }
361
362 Address saved_fp = null;
363 if (VM.getVM().isClientCompiler()) {
364 saved_fp = getFP().getAddressAt(0);
365 } else if (VM.getVM().isServerCompiler() &&
366 (VM.getVM().getInterpreter().contains(sender_pc) ||
367 VM.getVM().getStubRoutines().returnsToCallStub(sender_pc))) {
368 // C2 prologue saves EBP in the usual place.
369 // however only use it if the sender had link infomration in it.
370 saved_fp = sender_sp.getAddressAt(-2 * VM.getVM().getAddressSize());
371 }
372
373 return new X86Frame(sender_sp, saved_fp, sender_pc);
374 }
375
376 protected boolean hasSenderPD() {
377 // FIXME
378 // Check for null ebp? Need to do some tests.
379 return true;
380 }
381
382 public long frameSize() {
383 return (getSenderSP().minus(getSP()) / VM.getVM().getAddressSize());
384 }
385
386 public Address getLink() {
387 return addressOfStackSlot(LINK_OFFSET).getAddressAt(0);
388 }
389
390 // FIXME: not implementable yet
391 //inline void frame::set_link(intptr_t* addr) { *(intptr_t **)addr_at(link_offset) = addr; }
392
393 public Address getUnextendedSP() { return raw_unextendedSP; }
394
395 // Return address:
396 public Address getSenderPCAddr() { return addressOfStackSlot(RETURN_ADDR_OFFSET); }
397 public Address getSenderPC() { return getSenderPCAddr().getAddressAt(0); }
398
399 // return address of param, zero origin index.
400 public Address getNativeParamAddr(int idx) {
401 return addressOfStackSlot(NATIVE_FRAME_INITIAL_PARAM_OFFSET + idx);
402 }
403
404 public Address getSenderSP() { return addressOfStackSlot(SENDER_SP_OFFSET); }
405
406 public Address compiledArgumentToLocationPD(VMReg reg, RegisterMap regMap, int argSize) {
407 if (VM.getVM().isCore() || VM.getVM().isClientCompiler()) {
408 throw new RuntimeException("Should not reach here");
409 }
410
411 return oopMapRegToLocation(reg, regMap);
412 }
413
414 public Address addressOfInterpreterFrameLocals() {
415 return addressOfStackSlot(INTERPRETER_FRAME_LOCALS_OFFSET);
416 }
417
418 private Address addressOfInterpreterFrameBCX() {
419 return addressOfStackSlot(INTERPRETER_FRAME_BCX_OFFSET);
420 }
421
422 public int getInterpreterFrameBCI() {
423 // FIXME: this is not atomic with respect to GC and is unsuitable
424 // for use in a non-debugging, or reflective, system. Need to
425 // figure out how to express this.
426 Address bcp = addressOfInterpreterFrameBCX().getAddressAt(0);
427 OopHandle methodHandle = addressOfInterpreterFrameMethod().getOopHandleAt(0);
428 Method method = (Method) VM.getVM().getObjectHeap().newOop(methodHandle);
429 return bcpToBci(bcp, method);
430 }
431
432 public Address addressOfInterpreterFrameMDX() {
433 return addressOfStackSlot(INTERPRETER_FRAME_MDX_OFFSET);
434 }
435
436 // FIXME
437 //inline int frame::interpreter_frame_monitor_size() {
438 // return BasicObjectLock::size();
439 //}
440
441 // expression stack
442 // (the max_stack arguments are used by the GC; see class FrameClosure)
443
444 public Address addressOfInterpreterFrameExpressionStack() {
445 Address monitorEnd = interpreterFrameMonitorEnd().address();
446 return monitorEnd.addOffsetTo(-1 * VM.getVM().getAddressSize());
447 }
448
449 public int getInterpreterFrameExpressionStackDirection() { return -1; }
450
451 // top of expression stack
452 public Address addressOfInterpreterFrameTOS() {
453 return getSP();
454 }
455
456 /** Expression stack from top down */
457 public Address addressOfInterpreterFrameTOSAt(int slot) {
458 return addressOfInterpreterFrameTOS().addOffsetTo(slot * VM.getVM().getAddressSize());
459 }
460
461 public Address getInterpreterFrameSenderSP() {
462 if (Assert.ASSERTS_ENABLED) {
463 Assert.that(isInterpretedFrame(), "interpreted frame expected");
464 }
465 return addressOfStackSlot(INTERPRETER_FRAME_SENDER_SP_OFFSET).getAddressAt(0);
466 }
467
468 // Monitors
469 public BasicObjectLock interpreterFrameMonitorBegin() {
470 return new BasicObjectLock(addressOfStackSlot(INTERPRETER_FRAME_MONITOR_BLOCK_BOTTOM_OFFSET));
471 }
472
473 public BasicObjectLock interpreterFrameMonitorEnd() {
474 Address result = addressOfStackSlot(INTERPRETER_FRAME_MONITOR_BLOCK_TOP_OFFSET).getAddressAt(0);
475 if (Assert.ASSERTS_ENABLED) {
476 // make sure the pointer points inside the frame
477 Assert.that(AddressOps.gt(getFP(), result), "result must < than frame pointer");
478 Assert.that(AddressOps.lte(getSP(), result), "result must >= than stack pointer");
479 }
480 return new BasicObjectLock(result);
481 }
482
483 public int interpreterFrameMonitorSize() {
484 return BasicObjectLock.size();
485 }
486
487 // Method
488 public Address addressOfInterpreterFrameMethod() {
489 return addressOfStackSlot(INTERPRETER_FRAME_METHOD_OFFSET);
490 }
491
492 // Constant pool cache
493 public Address addressOfInterpreterFrameCPCache() {
494 return addressOfStackSlot(INTERPRETER_FRAME_CACHE_OFFSET);
495 }
496
497 // Entry frames
498 public JavaCallWrapper getEntryFrameCallWrapper() {
499 return new X86JavaCallWrapper(addressOfStackSlot(ENTRY_FRAME_CALL_WRAPPER_OFFSET).getAddressAt(0));
500 }
501
502 protected Address addressOfSavedOopResult() {
503 // offset is 2 for compiler2 and 3 for compiler1
504 return getSP().addOffsetTo((VM.getVM().isClientCompiler() ? 2 : 3) *
505 VM.getVM().getAddressSize());
506 }
507
508 protected Address addressOfSavedReceiver() {
509 return getSP().addOffsetTo(-4 * VM.getVM().getAddressSize());
510 }
511
512 private void dumpStack() {
513 if (getFP() != null) {
514 for (Address addr = getSP().addOffsetTo(-5 * VM.getVM().getAddressSize());
515 AddressOps.lte(addr, getFP().addOffsetTo(5 * VM.getVM().getAddressSize()));
516 addr = addr.addOffsetTo(VM.getVM().getAddressSize())) {
517 System.out.println(addr + ": " + addr.getAddressAt(0));
518 }
519 } else {
520 for (Address addr = getSP().addOffsetTo(-5 * VM.getVM().getAddressSize());
521 AddressOps.lte(addr, getSP().addOffsetTo(20 * VM.getVM().getAddressSize()));
522 addr = addr.addOffsetTo(VM.getVM().getAddressSize())) {
523 System.out.println(addr + ": " + addr.getAddressAt(0));
524 }
525 }
526 }
527 }