Mercurial > hg > graal-jvmci-8
comparison src/cpu/x86/vm/frame_x86.cpp @ 1201:24128c2ffa87
6921339: backout 6917766
Reviewed-by: mr
author | twisti |
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date | Fri, 29 Jan 2010 08:33:24 -0800 |
parents | ba263cfb7611 |
children | 18a389214829 |
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1200:ba263cfb7611 | 1201:24128c2ffa87 |
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1 /* | 1 /* |
2 * Copyright 1997-2010 Sun Microsystems, Inc. All Rights Reserved. | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | 4 * |
5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
220 tty->print_cr("patch_pc at address" INTPTR_FORMAT " [" INTPTR_FORMAT " -> " INTPTR_FORMAT "] ", | 220 tty->print_cr("patch_pc at address" INTPTR_FORMAT " [" INTPTR_FORMAT " -> " INTPTR_FORMAT "] ", |
221 &((address *)sp())[-1], ((address *)sp())[-1], pc); | 221 &((address *)sp())[-1], ((address *)sp())[-1], pc); |
222 } | 222 } |
223 ((address *)sp())[-1] = pc; | 223 ((address *)sp())[-1] = pc; |
224 _cb = CodeCache::find_blob(pc); | 224 _cb = CodeCache::find_blob(pc); |
225 address original_pc = nmethod::get_deopt_original_pc(this); | 225 if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) { |
226 if (original_pc != NULL) { | 226 address orig = (((nmethod*)_cb)->get_original_pc(this)); |
227 assert(original_pc == _pc, "expected original PC to be stored before patching"); | 227 assert(orig == _pc, "expected original to be stored before patching"); |
228 _deopt_state = is_deoptimized; | 228 _deopt_state = is_deoptimized; |
229 // leave _pc as is | 229 // leave _pc as is |
230 } else { | 230 } else { |
231 _deopt_state = not_deoptimized; | 231 _deopt_state = not_deoptimized; |
232 _pc = pc; | 232 _pc = pc; |
321 } | 321 } |
322 frame fr(jfa->last_Java_sp(), jfa->last_Java_fp()); | 322 frame fr(jfa->last_Java_sp(), jfa->last_Java_fp()); |
323 return fr; | 323 return fr; |
324 } | 324 } |
325 | 325 |
326 | |
327 //------------------------------------------------------------------------------ | |
328 // frame::sender_for_interpreter_frame | |
329 frame frame::sender_for_interpreter_frame(RegisterMap* map) const { | 326 frame frame::sender_for_interpreter_frame(RegisterMap* map) const { |
330 // SP is the raw SP from the sender after adapter or interpreter | 327 // sp is the raw sp from the sender after adapter or interpreter extension |
331 // extension. | 328 intptr_t* sp = (intptr_t*) addr_at(sender_sp_offset); |
332 intptr_t* sender_sp = this->sender_sp(); | |
333 | 329 |
334 // This is the sp before any possible extension (adapter/locals). | 330 // This is the sp before any possible extension (adapter/locals). |
335 intptr_t* unextended_sp = interpreter_frame_sender_sp(); | 331 intptr_t* unextended_sp = interpreter_frame_sender_sp(); |
336 | |
337 // Stored FP. | |
338 intptr_t* saved_fp = link(); | |
339 | 332 |
340 address sender_pc = this->sender_pc(); | 333 address sender_pc = this->sender_pc(); |
341 CodeBlob* sender_cb = CodeCache::find_blob_unsafe(sender_pc); | 334 CodeBlob* sender_cb = CodeCache::find_blob_unsafe(sender_pc); |
342 assert(sender_cb, "sanity"); | 335 assert(sender_cb, "sanity"); |
343 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); | 336 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
344 | 337 if (sender_nm != NULL && sender_nm->is_method_handle_return(sender_pc)) { |
345 if (sender_nm != NULL) { | 338 unextended_sp = (intptr_t*) at(link_offset); |
346 // If the sender PC is a deoptimization point, get the original | |
347 // PC. For MethodHandle call site the unextended_sp is stored in | |
348 // saved_fp. | |
349 if (sender_nm->is_deopt_mh_entry(sender_pc)) { | |
350 DEBUG_ONLY(verify_deopt_mh_original_pc(sender_nm, saved_fp)); | |
351 unextended_sp = saved_fp; | |
352 } | |
353 else if (sender_nm->is_deopt_entry(sender_pc)) { | |
354 DEBUG_ONLY(verify_deopt_original_pc(sender_nm, unextended_sp)); | |
355 } | |
356 else if (sender_nm->is_method_handle_return(sender_pc)) { | |
357 unextended_sp = saved_fp; | |
358 } | |
359 } | 339 } |
360 | 340 |
361 // The interpreter and compiler(s) always save EBP/RBP in a known | 341 // The interpreter and compiler(s) always save EBP/RBP in a known |
362 // location on entry. We must record where that location is | 342 // location on entry. We must record where that location is |
363 // so this if EBP/RBP was live on callout from c2 we can find | 343 // so this if EBP/RBP was live on callout from c2 we can find |
377 if (true) { | 357 if (true) { |
378 map->set_location(rbp->as_VMReg()->next(), (address)addr_at(link_offset)); | 358 map->set_location(rbp->as_VMReg()->next(), (address)addr_at(link_offset)); |
379 } | 359 } |
380 #endif // AMD64 | 360 #endif // AMD64 |
381 } | 361 } |
382 #endif // COMPILER2 | 362 #endif /* COMPILER2 */ |
383 | 363 return frame(sp, unextended_sp, link(), sender_pc); |
384 return frame(sender_sp, unextended_sp, saved_fp, sender_pc); | 364 } |
385 } | 365 |
386 | 366 |
387 | 367 //------------------------------sender_for_compiled_frame----------------------- |
388 //------------------------------------------------------------------------------ | |
389 // frame::sender_for_compiled_frame | |
390 frame frame::sender_for_compiled_frame(RegisterMap* map) const { | 368 frame frame::sender_for_compiled_frame(RegisterMap* map) const { |
391 assert(map != NULL, "map must be set"); | 369 assert(map != NULL, "map must be set"); |
370 const bool c1_compiled = _cb->is_compiled_by_c1(); | |
392 | 371 |
393 // frame owned by optimizing compiler | 372 // frame owned by optimizing compiler |
373 intptr_t* sender_sp = NULL; | |
374 | |
394 assert(_cb->frame_size() >= 0, "must have non-zero frame size"); | 375 assert(_cb->frame_size() >= 0, "must have non-zero frame size"); |
395 intptr_t* sender_sp = unextended_sp() + _cb->frame_size(); | 376 sender_sp = unextended_sp() + _cb->frame_size(); |
396 intptr_t* unextended_sp = sender_sp; | |
397 | 377 |
398 // On Intel the return_address is always the word on the stack | 378 // On Intel the return_address is always the word on the stack |
399 address sender_pc = (address) *(sender_sp-1); | 379 address sender_pc = (address) *(sender_sp-1); |
400 | 380 |
401 // This is the saved value of EBP which may or may not really be an FP. | 381 // This is the saved value of ebp which may or may not really be an fp. |
402 // It is only an FP if the sender is an interpreter frame (or C1?). | 382 // it is only an fp if the sender is an interpreter frame (or c1?) |
403 intptr_t* saved_fp = (intptr_t*) *(sender_sp - frame::sender_sp_offset); | 383 |
404 | 384 intptr_t *saved_fp = (intptr_t*)*(sender_sp - frame::sender_sp_offset); |
405 // If we are returning to a compiled MethodHandle call site, the | 385 |
406 // saved_fp will in fact be a saved value of the unextended SP. The | 386 intptr_t* unextended_sp = sender_sp; |
407 // simplest way to tell whether we are returning to such a call site | 387 // If we are returning to a compiled method handle call site, |
408 // is as follows: | 388 // the saved_fp will in fact be a saved value of the unextended SP. |
389 // The simplest way to tell whether we are returning to such a call | |
390 // site is as follows: | |
409 CodeBlob* sender_cb = CodeCache::find_blob_unsafe(sender_pc); | 391 CodeBlob* sender_cb = CodeCache::find_blob_unsafe(sender_pc); |
410 assert(sender_cb, "sanity"); | 392 assert(sender_cb, "sanity"); |
411 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); | 393 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
412 | 394 if (sender_nm != NULL && sender_nm->is_method_handle_return(sender_pc)) { |
413 if (sender_nm != NULL) { | 395 unextended_sp = saved_fp; |
414 // If the sender PC is a deoptimization point, get the original | |
415 // PC. For MethodHandle call site the unextended_sp is stored in | |
416 // saved_fp. | |
417 if (sender_nm->is_deopt_mh_entry(sender_pc)) { | |
418 DEBUG_ONLY(verify_deopt_mh_original_pc(sender_nm, saved_fp)); | |
419 unextended_sp = saved_fp; | |
420 } | |
421 else if (sender_nm->is_deopt_entry(sender_pc)) { | |
422 DEBUG_ONLY(verify_deopt_original_pc(sender_nm, unextended_sp)); | |
423 } | |
424 else if (sender_nm->is_method_handle_return(sender_pc)) { | |
425 unextended_sp = saved_fp; | |
426 } | |
427 } | 396 } |
428 | 397 |
429 if (map->update_map()) { | 398 if (map->update_map()) { |
430 // Tell GC to use argument oopmaps for some runtime stubs that need it. | 399 // Tell GC to use argument oopmaps for some runtime stubs that need it. |
431 // For C1, the runtime stub might not have oop maps, so set this flag | 400 // For C1, the runtime stub might not have oop maps, so set this flag |
432 // outside of update_register_map. | 401 // outside of update_register_map. |
433 map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread())); | 402 map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread())); |
434 if (_cb->oop_maps() != NULL) { | 403 if (_cb->oop_maps() != NULL) { |
435 OopMapSet::update_register_map(this, map); | 404 OopMapSet::update_register_map(this, map); |
436 } | 405 } |
437 // Since the prolog does the save and restore of EBP there is no oopmap | 406 // Since the prolog does the save and restore of epb there is no oopmap |
438 // for it so we must fill in its location as if there was an oopmap entry | 407 // for it so we must fill in its location as if there was an oopmap entry |
439 // since if our caller was compiled code there could be live jvm state in it. | 408 // since if our caller was compiled code there could be live jvm state in it. |
440 map->set_location(rbp->as_VMReg(), (address) (sender_sp - frame::sender_sp_offset)); | 409 map->set_location(rbp->as_VMReg(), (address) (sender_sp - frame::sender_sp_offset)); |
441 #ifdef AMD64 | 410 #ifdef AMD64 |
442 // this is weird "H" ought to be at a higher address however the | 411 // this is weird "H" ought to be at a higher address however the |
451 | 420 |
452 assert(sender_sp != sp(), "must have changed"); | 421 assert(sender_sp != sp(), "must have changed"); |
453 return frame(sender_sp, unextended_sp, saved_fp, sender_pc); | 422 return frame(sender_sp, unextended_sp, saved_fp, sender_pc); |
454 } | 423 } |
455 | 424 |
456 | |
457 //------------------------------------------------------------------------------ | |
458 // frame::sender | |
459 frame frame::sender(RegisterMap* map) const { | 425 frame frame::sender(RegisterMap* map) const { |
460 // Default is we done have to follow them. The sender_for_xxx will | 426 // Default is we done have to follow them. The sender_for_xxx will |
461 // update it accordingly | 427 // update it accordingly |
462 map->set_include_argument_oops(false); | 428 map->set_include_argument_oops(false); |
463 | 429 |