Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/frame.cpp @ 2192:b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
Reviewed-by: dholmes, bdelsart
| author | bobv |
|---|---|
| date | Wed, 02 Feb 2011 11:35:26 -0500 |
| parents | 3582bf76420e |
| children | 2e038ad0c1d0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2142 | 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "gc_interface/collectedHeap.inline.hpp" | |
| 27 #include "interpreter/interpreter.hpp" | |
| 28 #include "interpreter/oopMapCache.hpp" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "memory/universe.inline.hpp" | |
| 31 #include "oops/markOop.hpp" | |
| 32 #include "oops/methodDataOop.hpp" | |
| 33 #include "oops/methodOop.hpp" | |
| 34 #include "oops/oop.inline.hpp" | |
| 35 #include "oops/oop.inline2.hpp" | |
| 36 #include "runtime/frame.inline.hpp" | |
| 37 #include "runtime/handles.inline.hpp" | |
| 38 #include "runtime/javaCalls.hpp" | |
| 39 #include "runtime/monitorChunk.hpp" | |
| 40 #include "runtime/sharedRuntime.hpp" | |
| 41 #include "runtime/signature.hpp" | |
| 42 #include "runtime/stubCodeGenerator.hpp" | |
| 43 #include "runtime/stubRoutines.hpp" | |
|
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44 #include "utilities/decoder.hpp" |
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45 |
| 1972 | 46 #ifdef TARGET_ARCH_x86 |
| 47 # include "nativeInst_x86.hpp" | |
| 48 #endif | |
| 49 #ifdef TARGET_ARCH_sparc | |
| 50 # include "nativeInst_sparc.hpp" | |
| 51 #endif | |
| 52 #ifdef TARGET_ARCH_zero | |
| 53 # include "nativeInst_zero.hpp" | |
| 54 #endif | |
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55 #ifdef TARGET_ARCH_arm |
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56 # include "nativeInst_arm.hpp" |
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57 #endif |
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58 #ifdef TARGET_ARCH_ppc |
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59 # include "nativeInst_ppc.hpp" |
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60 #endif |
| 0 | 61 |
| 62 RegisterMap::RegisterMap(JavaThread *thread, bool update_map) { | |
| 63 _thread = thread; | |
| 64 _update_map = update_map; | |
| 65 clear(); | |
| 66 debug_only(_update_for_id = NULL;) | |
| 67 #ifndef PRODUCT | |
| 68 for (int i = 0; i < reg_count ; i++ ) _location[i] = NULL; | |
| 69 #endif /* PRODUCT */ | |
| 70 } | |
| 71 | |
| 72 RegisterMap::RegisterMap(const RegisterMap* map) { | |
| 73 assert(map != this, "bad initialization parameter"); | |
| 74 assert(map != NULL, "RegisterMap must be present"); | |
| 75 _thread = map->thread(); | |
| 76 _update_map = map->update_map(); | |
| 77 _include_argument_oops = map->include_argument_oops(); | |
| 78 debug_only(_update_for_id = map->_update_for_id;) | |
| 79 pd_initialize_from(map); | |
| 80 if (update_map()) { | |
| 81 for(int i = 0; i < location_valid_size; i++) { | |
| 82 LocationValidType bits = !update_map() ? 0 : map->_location_valid[i]; | |
| 83 _location_valid[i] = bits; | |
| 84 // for whichever bits are set, pull in the corresponding map->_location | |
| 85 int j = i*location_valid_type_size; | |
| 86 while (bits != 0) { | |
| 87 if ((bits & 1) != 0) { | |
| 88 assert(0 <= j && j < reg_count, "range check"); | |
| 89 _location[j] = map->_location[j]; | |
| 90 } | |
| 91 bits >>= 1; | |
| 92 j += 1; | |
| 93 } | |
| 94 } | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 void RegisterMap::clear() { | |
| 99 set_include_argument_oops(true); | |
| 100 if (_update_map) { | |
| 101 for(int i = 0; i < location_valid_size; i++) { | |
| 102 _location_valid[i] = 0; | |
| 103 } | |
| 104 pd_clear(); | |
| 105 } else { | |
| 106 pd_initialize(); | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 #ifndef PRODUCT | |
| 111 | |
| 112 void RegisterMap::print_on(outputStream* st) const { | |
| 113 st->print_cr("Register map"); | |
| 114 for(int i = 0; i < reg_count; i++) { | |
| 115 | |
| 116 VMReg r = VMRegImpl::as_VMReg(i); | |
| 117 intptr_t* src = (intptr_t*) location(r); | |
| 118 if (src != NULL) { | |
| 119 | |
| 417 | 120 r->print_on(st); |
| 121 st->print(" [" INTPTR_FORMAT "] = ", src); | |
| 0 | 122 if (((uintptr_t)src & (sizeof(*src)-1)) != 0) { |
| 417 | 123 st->print_cr("<misaligned>"); |
| 0 | 124 } else { |
| 417 | 125 st->print_cr(INTPTR_FORMAT, *src); |
| 0 | 126 } |
| 127 } | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 void RegisterMap::print() const { | |
| 132 print_on(tty); | |
| 133 } | |
| 134 | |
| 135 #endif | |
| 136 // This returns the pc that if you were in the debugger you'd see. Not | |
| 137 // the idealized value in the frame object. This undoes the magic conversion | |
| 138 // that happens for deoptimized frames. In addition it makes the value the | |
| 139 // hardware would want to see in the native frame. The only user (at this point) | |
| 140 // is deoptimization. It likely no one else should ever use it. | |
| 141 | |
| 142 address frame::raw_pc() const { | |
| 143 if (is_deoptimized_frame()) { | |
| 1204 | 144 nmethod* nm = cb()->as_nmethod_or_null(); |
| 145 if (nm->is_method_handle_return(pc())) | |
| 146 return nm->deopt_mh_handler_begin() - pc_return_offset; | |
| 147 else | |
| 148 return nm->deopt_handler_begin() - pc_return_offset; | |
| 0 | 149 } else { |
| 150 return (pc() - pc_return_offset); | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 // Change the pc in a frame object. This does not change the actual pc in | |
| 155 // actual frame. To do that use patch_pc. | |
| 156 // | |
| 157 void frame::set_pc(address newpc ) { | |
| 158 #ifdef ASSERT | |
| 159 if (_cb != NULL && _cb->is_nmethod()) { | |
| 160 assert(!((nmethod*)_cb)->is_deopt_pc(_pc), "invariant violation"); | |
| 161 } | |
| 162 #endif // ASSERT | |
| 163 | |
| 164 // Unsafe to use the is_deoptimzed tester after changing pc | |
| 165 _deopt_state = unknown; | |
| 166 _pc = newpc; | |
| 167 _cb = CodeCache::find_blob_unsafe(_pc); | |
| 168 | |
| 169 } | |
| 170 | |
| 171 // type testers | |
| 172 bool frame::is_deoptimized_frame() const { | |
| 173 assert(_deopt_state != unknown, "not answerable"); | |
| 174 return _deopt_state == is_deoptimized; | |
| 175 } | |
| 176 | |
| 177 bool frame::is_native_frame() const { | |
| 178 return (_cb != NULL && | |
| 179 _cb->is_nmethod() && | |
| 180 ((nmethod*)_cb)->is_native_method()); | |
| 181 } | |
| 182 | |
| 183 bool frame::is_java_frame() const { | |
| 184 if (is_interpreted_frame()) return true; | |
| 185 if (is_compiled_frame()) return true; | |
| 186 return false; | |
| 187 } | |
| 188 | |
| 189 | |
| 190 bool frame::is_compiled_frame() const { | |
| 191 if (_cb != NULL && | |
| 192 _cb->is_nmethod() && | |
| 193 ((nmethod*)_cb)->is_java_method()) { | |
| 194 return true; | |
| 195 } | |
| 196 return false; | |
| 197 } | |
| 198 | |
| 199 | |
| 200 bool frame::is_runtime_frame() const { | |
| 201 return (_cb != NULL && _cb->is_runtime_stub()); | |
| 202 } | |
| 203 | |
| 204 bool frame::is_safepoint_blob_frame() const { | |
| 205 return (_cb != NULL && _cb->is_safepoint_stub()); | |
| 206 } | |
| 207 | |
| 208 // testers | |
| 209 | |
| 210 bool frame::is_first_java_frame() const { | |
| 211 RegisterMap map(JavaThread::current(), false); // No update | |
| 212 frame s; | |
| 213 for (s = sender(&map); !(s.is_java_frame() || s.is_first_frame()); s = s.sender(&map)); | |
| 214 return s.is_first_frame(); | |
| 215 } | |
| 216 | |
| 217 | |
| 218 bool frame::entry_frame_is_first() const { | |
| 219 return entry_frame_call_wrapper()->anchor()->last_Java_sp() == NULL; | |
| 220 } | |
| 221 | |
| 222 | |
| 223 bool frame::should_be_deoptimized() const { | |
| 224 if (_deopt_state == is_deoptimized || | |
| 225 !is_compiled_frame() ) return false; | |
| 226 assert(_cb != NULL && _cb->is_nmethod(), "must be an nmethod"); | |
| 227 nmethod* nm = (nmethod *)_cb; | |
| 228 if (TraceDependencies) { | |
| 229 tty->print("checking (%s) ", nm->is_marked_for_deoptimization() ? "true" : "false"); | |
| 230 nm->print_value_on(tty); | |
| 231 tty->cr(); | |
| 232 } | |
| 233 | |
| 234 if( !nm->is_marked_for_deoptimization() ) | |
| 235 return false; | |
| 236 | |
| 237 // If at the return point, then the frame has already been popped, and | |
| 238 // only the return needs to be executed. Don't deoptimize here. | |
| 239 return !nm->is_at_poll_return(pc()); | |
| 240 } | |
| 241 | |
| 242 bool frame::can_be_deoptimized() const { | |
| 243 if (!is_compiled_frame()) return false; | |
| 244 nmethod* nm = (nmethod*)_cb; | |
| 245 | |
| 246 if( !nm->can_be_deoptimized() ) | |
| 247 return false; | |
| 248 | |
| 249 return !nm->is_at_poll_return(pc()); | |
| 250 } | |
| 251 | |
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252 void frame::deoptimize(JavaThread* thread) { |
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253 // Schedule deoptimization of an nmethod activation with this frame. |
| 0 | 254 assert(_cb != NULL && _cb->is_nmethod(), "must be"); |
| 255 nmethod* nm = (nmethod*)_cb; | |
| 256 | |
| 257 // This is a fix for register window patching race | |
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258 if (NeedsDeoptSuspend && Thread::current() != thread) { |
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259 assert(SafepointSynchronize::is_at_safepoint(), |
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260 "patching other threads for deopt may only occur at a safepoint"); |
| 0 | 261 |
| 262 // It is possible especially with DeoptimizeALot/DeoptimizeRandom that | |
| 263 // we could see the frame again and ask for it to be deoptimized since | |
| 264 // it might move for a long time. That is harmless and we just ignore it. | |
| 265 if (id() == thread->must_deopt_id()) { | |
| 266 assert(thread->is_deopt_suspend(), "lost suspension"); | |
| 267 return; | |
| 268 } | |
| 269 | |
| 270 // We are at a safepoint so the target thread can only be | |
| 271 // in 4 states: | |
| 272 // blocked - no problem | |
| 273 // blocked_trans - no problem (i.e. could have woken up from blocked | |
| 274 // during a safepoint). | |
| 275 // native - register window pc patching race | |
| 276 // native_trans - momentary state | |
| 277 // | |
| 278 // We could just wait out a thread in native_trans to block. | |
| 279 // Then we'd have all the issues that the safepoint code has as to | |
| 280 // whether to spin or block. It isn't worth it. Just treat it like | |
| 281 // native and be done with it. | |
| 282 // | |
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283 // Examine the state of the thread at the start of safepoint since |
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284 // threads that were in native at the start of the safepoint could |
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285 // come to a halt during the safepoint, changing the current value |
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286 // of the safepoint_state. |
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287 JavaThreadState state = thread->safepoint_state()->orig_thread_state(); |
| 0 | 288 if (state == _thread_in_native || state == _thread_in_native_trans) { |
| 289 // Since we are at a safepoint the target thread will stop itself | |
| 290 // before it can return to java as long as we remain at the safepoint. | |
| 291 // Therefore we can put an additional request for the thread to stop | |
| 292 // no matter what no (like a suspend). This will cause the thread | |
| 293 // to notice it needs to do the deopt on its own once it leaves native. | |
| 294 // | |
| 295 // The only reason we must do this is because on machine with register | |
| 296 // windows we have a race with patching the return address and the | |
| 297 // window coming live as the thread returns to the Java code (but still | |
| 298 // in native mode) and then blocks. It is only this top most frame | |
| 299 // that is at risk. So in truth we could add an additional check to | |
| 300 // see if this frame is one that is at risk. | |
| 301 RegisterMap map(thread, false); | |
| 302 frame at_risk = thread->last_frame().sender(&map); | |
| 303 if (id() == at_risk.id()) { | |
| 304 thread->set_must_deopt_id(id()); | |
| 305 thread->set_deopt_suspend(); | |
| 306 return; | |
| 307 } | |
| 308 } | |
| 309 } // NeedsDeoptSuspend | |
| 310 | |
| 311 | |
| 1204 | 312 // If the call site is a MethodHandle call site use the MH deopt |
| 313 // handler. | |
| 314 address deopt = nm->is_method_handle_return(pc()) ? | |
| 315 nm->deopt_mh_handler_begin() : | |
| 316 nm->deopt_handler_begin(); | |
| 317 | |
| 0 | 318 // Save the original pc before we patch in the new one |
| 319 nm->set_original_pc(this, pc()); | |
| 320 patch_pc(thread, deopt); | |
| 1204 | 321 |
| 0 | 322 #ifdef ASSERT |
| 323 { | |
| 324 RegisterMap map(thread, false); | |
| 325 frame check = thread->last_frame(); | |
| 326 while (id() != check.id()) { | |
| 327 check = check.sender(&map); | |
| 328 } | |
| 329 assert(check.is_deoptimized_frame(), "missed deopt"); | |
| 330 } | |
| 331 #endif // ASSERT | |
| 332 } | |
| 333 | |
| 334 frame frame::java_sender() const { | |
| 335 RegisterMap map(JavaThread::current(), false); | |
| 336 frame s; | |
| 337 for (s = sender(&map); !(s.is_java_frame() || s.is_first_frame()); s = s.sender(&map)) ; | |
| 338 guarantee(s.is_java_frame(), "tried to get caller of first java frame"); | |
| 339 return s; | |
| 340 } | |
| 341 | |
| 342 frame frame::real_sender(RegisterMap* map) const { | |
| 343 frame result = sender(map); | |
| 344 while (result.is_runtime_frame()) { | |
| 345 result = result.sender(map); | |
| 346 } | |
| 347 return result; | |
| 348 } | |
| 349 | |
| 350 // Note: called by profiler - NOT for current thread | |
| 351 frame frame::profile_find_Java_sender_frame(JavaThread *thread) { | |
| 352 // If we don't recognize this frame, walk back up the stack until we do | |
| 353 RegisterMap map(thread, false); | |
| 354 frame first_java_frame = frame(); | |
| 355 | |
| 356 // Find the first Java frame on the stack starting with input frame | |
| 357 if (is_java_frame()) { | |
| 358 // top frame is compiled frame or deoptimized frame | |
| 359 first_java_frame = *this; | |
| 360 } else if (safe_for_sender(thread)) { | |
| 361 for (frame sender_frame = sender(&map); | |
| 362 sender_frame.safe_for_sender(thread) && !sender_frame.is_first_frame(); | |
| 363 sender_frame = sender_frame.sender(&map)) { | |
| 364 if (sender_frame.is_java_frame()) { | |
| 365 first_java_frame = sender_frame; | |
| 366 break; | |
| 367 } | |
| 368 } | |
| 369 } | |
| 370 return first_java_frame; | |
| 371 } | |
| 372 | |
| 373 // Interpreter frames | |
| 374 | |
| 375 | |
| 376 void frame::interpreter_frame_set_locals(intptr_t* locs) { | |
| 377 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 378 *interpreter_frame_locals_addr() = locs; | |
| 379 } | |
| 380 | |
| 381 methodOop frame::interpreter_frame_method() const { | |
| 382 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 383 methodOop m = *interpreter_frame_method_addr(); | |
| 384 assert(m->is_perm(), "bad methodOop in interpreter frame"); | |
| 385 assert(m->is_method(), "not a methodOop"); | |
| 386 return m; | |
| 387 } | |
| 388 | |
| 389 void frame::interpreter_frame_set_method(methodOop method) { | |
| 390 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 391 *interpreter_frame_method_addr() = method; | |
| 392 } | |
| 393 | |
| 394 void frame::interpreter_frame_set_bcx(intptr_t bcx) { | |
| 395 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 396 if (ProfileInterpreter) { | |
| 397 bool formerly_bci = is_bci(interpreter_frame_bcx()); | |
| 398 bool is_now_bci = is_bci(bcx); | |
| 399 *interpreter_frame_bcx_addr() = bcx; | |
| 400 | |
| 401 intptr_t mdx = interpreter_frame_mdx(); | |
| 402 | |
| 403 if (mdx != 0) { | |
| 404 if (formerly_bci) { | |
| 405 if (!is_now_bci) { | |
| 406 // The bcx was just converted from bci to bcp. | |
| 407 // Convert the mdx in parallel. | |
| 408 methodDataOop mdo = interpreter_frame_method()->method_data(); | |
| 409 assert(mdo != NULL, ""); | |
| 410 int mdi = mdx - 1; // We distinguish valid mdi from zero by adding one. | |
| 411 address mdp = mdo->di_to_dp(mdi); | |
| 412 interpreter_frame_set_mdx((intptr_t)mdp); | |
| 413 } | |
| 414 } else { | |
| 415 if (is_now_bci) { | |
| 416 // The bcx was just converted from bcp to bci. | |
| 417 // Convert the mdx in parallel. | |
| 418 methodDataOop mdo = interpreter_frame_method()->method_data(); | |
| 419 assert(mdo != NULL, ""); | |
| 420 int mdi = mdo->dp_to_di((address)mdx); | |
| 421 interpreter_frame_set_mdx((intptr_t)mdi + 1); // distinguish valid from 0. | |
| 422 } | |
| 423 } | |
| 424 } | |
| 425 } else { | |
| 426 *interpreter_frame_bcx_addr() = bcx; | |
| 427 } | |
| 428 } | |
| 429 | |
| 430 jint frame::interpreter_frame_bci() const { | |
| 431 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 432 intptr_t bcx = interpreter_frame_bcx(); | |
| 433 return is_bci(bcx) ? bcx : interpreter_frame_method()->bci_from((address)bcx); | |
| 434 } | |
| 435 | |
| 436 void frame::interpreter_frame_set_bci(jint bci) { | |
| 437 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 438 assert(!is_bci(interpreter_frame_bcx()), "should not set bci during GC"); | |
| 439 interpreter_frame_set_bcx((intptr_t)interpreter_frame_method()->bcp_from(bci)); | |
| 440 } | |
| 441 | |
| 442 address frame::interpreter_frame_bcp() const { | |
| 443 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 444 intptr_t bcx = interpreter_frame_bcx(); | |
| 445 return is_bci(bcx) ? interpreter_frame_method()->bcp_from(bcx) : (address)bcx; | |
| 446 } | |
| 447 | |
| 448 void frame::interpreter_frame_set_bcp(address bcp) { | |
| 449 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 450 assert(!is_bci(interpreter_frame_bcx()), "should not set bcp during GC"); | |
| 451 interpreter_frame_set_bcx((intptr_t)bcp); | |
| 452 } | |
| 453 | |
| 454 void frame::interpreter_frame_set_mdx(intptr_t mdx) { | |
| 455 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 456 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 457 *interpreter_frame_mdx_addr() = mdx; | |
| 458 } | |
| 459 | |
| 460 address frame::interpreter_frame_mdp() const { | |
| 461 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 462 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 463 intptr_t bcx = interpreter_frame_bcx(); | |
| 464 intptr_t mdx = interpreter_frame_mdx(); | |
| 465 | |
| 466 assert(!is_bci(bcx), "should not access mdp during GC"); | |
| 467 return (address)mdx; | |
| 468 } | |
| 469 | |
| 470 void frame::interpreter_frame_set_mdp(address mdp) { | |
| 471 assert(is_interpreted_frame(), "interpreted frame expected"); | |
| 472 if (mdp == NULL) { | |
| 473 // Always allow the mdp to be cleared. | |
| 474 interpreter_frame_set_mdx((intptr_t)mdp); | |
| 475 } | |
| 476 intptr_t bcx = interpreter_frame_bcx(); | |
| 477 assert(!is_bci(bcx), "should not set mdp during GC"); | |
| 478 interpreter_frame_set_mdx((intptr_t)mdp); | |
| 479 } | |
| 480 | |
| 481 BasicObjectLock* frame::next_monitor_in_interpreter_frame(BasicObjectLock* current) const { | |
| 482 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 483 #ifdef ASSERT | |
| 484 interpreter_frame_verify_monitor(current); | |
| 485 #endif | |
| 486 BasicObjectLock* next = (BasicObjectLock*) (((intptr_t*) current) + interpreter_frame_monitor_size()); | |
| 487 return next; | |
| 488 } | |
| 489 | |
| 490 BasicObjectLock* frame::previous_monitor_in_interpreter_frame(BasicObjectLock* current) const { | |
| 491 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 492 #ifdef ASSERT | |
| 493 // // This verification needs to be checked before being enabled | |
| 494 // interpreter_frame_verify_monitor(current); | |
| 495 #endif | |
| 496 BasicObjectLock* previous = (BasicObjectLock*) (((intptr_t*) current) - interpreter_frame_monitor_size()); | |
| 497 return previous; | |
| 498 } | |
| 499 | |
| 500 // Interpreter locals and expression stack locations. | |
| 501 | |
| 502 intptr_t* frame::interpreter_frame_local_at(int index) const { | |
| 503 const int n = Interpreter::local_offset_in_bytes(index)/wordSize; | |
| 504 return &((*interpreter_frame_locals_addr())[n]); | |
| 505 } | |
| 506 | |
| 507 intptr_t* frame::interpreter_frame_expression_stack_at(jint offset) const { | |
| 508 const int i = offset * interpreter_frame_expression_stack_direction(); | |
| 1506 | 509 const int n = i * Interpreter::stackElementWords; |
| 0 | 510 return &(interpreter_frame_expression_stack()[n]); |
| 511 } | |
| 512 | |
| 513 jint frame::interpreter_frame_expression_stack_size() const { | |
| 514 // Number of elements on the interpreter expression stack | |
| 515 // Callers should span by stackElementWords | |
| 1506 | 516 int element_size = Interpreter::stackElementWords; |
| 0 | 517 if (frame::interpreter_frame_expression_stack_direction() < 0) { |
| 518 return (interpreter_frame_expression_stack() - | |
| 519 interpreter_frame_tos_address() + 1)/element_size; | |
| 520 } else { | |
| 521 return (interpreter_frame_tos_address() - | |
| 522 interpreter_frame_expression_stack() + 1)/element_size; | |
| 523 } | |
| 524 } | |
| 525 | |
| 526 | |
| 527 // (frame::interpreter_frame_sender_sp accessor is in frame_<arch>.cpp) | |
| 528 | |
| 529 const char* frame::print_name() const { | |
| 530 if (is_native_frame()) return "Native"; | |
| 531 if (is_interpreted_frame()) return "Interpreted"; | |
| 532 if (is_compiled_frame()) { | |
| 533 if (is_deoptimized_frame()) return "Deoptimized"; | |
| 534 return "Compiled"; | |
| 535 } | |
| 536 if (sp() == NULL) return "Empty"; | |
| 537 return "C"; | |
| 538 } | |
| 539 | |
| 540 void frame::print_value_on(outputStream* st, JavaThread *thread) const { | |
| 541 NOT_PRODUCT(address begin = pc()-40;) | |
| 542 NOT_PRODUCT(address end = NULL;) | |
| 543 | |
| 544 st->print("%s frame (sp=" INTPTR_FORMAT " unextended sp=" INTPTR_FORMAT, print_name(), sp(), unextended_sp()); | |
| 545 if (sp() != NULL) | |
| 546 st->print(", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT, fp(), pc()); | |
| 547 | |
| 548 if (StubRoutines::contains(pc())) { | |
| 549 st->print_cr(")"); | |
| 550 st->print("("); | |
| 551 StubCodeDesc* desc = StubCodeDesc::desc_for(pc()); | |
| 552 st->print("~Stub::%s", desc->name()); | |
| 553 NOT_PRODUCT(begin = desc->begin(); end = desc->end();) | |
| 554 } else if (Interpreter::contains(pc())) { | |
| 555 st->print_cr(")"); | |
| 556 st->print("("); | |
| 557 InterpreterCodelet* desc = Interpreter::codelet_containing(pc()); | |
| 558 if (desc != NULL) { | |
| 559 st->print("~"); | |
| 560 desc->print(); | |
| 561 NOT_PRODUCT(begin = desc->code_begin(); end = desc->code_end();) | |
| 562 } else { | |
| 563 st->print("~interpreter"); | |
| 564 } | |
| 565 } | |
| 566 st->print_cr(")"); | |
| 567 | |
| 568 if (_cb != NULL) { | |
| 569 st->print(" "); | |
| 570 _cb->print_value_on(st); | |
| 571 st->cr(); | |
| 572 #ifndef PRODUCT | |
| 573 if (end == NULL) { | |
| 1748 | 574 begin = _cb->code_begin(); |
| 575 end = _cb->code_end(); | |
| 0 | 576 } |
| 577 #endif | |
| 578 } | |
| 579 NOT_PRODUCT(if (WizardMode && Verbose) Disassembler::decode(begin, end);) | |
| 580 } | |
| 581 | |
| 582 | |
| 583 void frame::print_on(outputStream* st) const { | |
| 584 print_value_on(st,NULL); | |
| 585 if (is_interpreted_frame()) { | |
| 586 interpreter_frame_print_on(st); | |
| 587 } | |
| 588 } | |
| 589 | |
| 590 | |
| 591 void frame::interpreter_frame_print_on(outputStream* st) const { | |
| 592 #ifndef PRODUCT | |
| 593 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 594 jint i; | |
| 595 for (i = 0; i < interpreter_frame_method()->max_locals(); i++ ) { | |
| 596 intptr_t x = *interpreter_frame_local_at(i); | |
| 597 st->print(" - local [" INTPTR_FORMAT "]", x); | |
| 598 st->fill_to(23); | |
| 599 st->print_cr("; #%d", i); | |
| 600 } | |
| 601 for (i = interpreter_frame_expression_stack_size() - 1; i >= 0; --i ) { | |
| 602 intptr_t x = *interpreter_frame_expression_stack_at(i); | |
| 603 st->print(" - stack [" INTPTR_FORMAT "]", x); | |
| 604 st->fill_to(23); | |
| 605 st->print_cr("; #%d", i); | |
| 606 } | |
| 607 // locks for synchronization | |
| 608 for (BasicObjectLock* current = interpreter_frame_monitor_end(); | |
| 609 current < interpreter_frame_monitor_begin(); | |
| 610 current = next_monitor_in_interpreter_frame(current)) { | |
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611 st->print(" - obj ["); |
| 0 | 612 current->obj()->print_value_on(st); |
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613 st->print_cr("]"); |
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614 st->print(" - lock ["); |
| 0 | 615 current->lock()->print_on(st); |
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616 st->print_cr("]"); |
| 0 | 617 } |
| 618 // monitor | |
| 619 st->print_cr(" - monitor[" INTPTR_FORMAT "]", interpreter_frame_monitor_begin()); | |
| 620 // bcp | |
| 621 st->print(" - bcp [" INTPTR_FORMAT "]", interpreter_frame_bcp()); | |
| 622 st->fill_to(23); | |
| 623 st->print_cr("; @%d", interpreter_frame_bci()); | |
| 624 // locals | |
| 625 st->print_cr(" - locals [" INTPTR_FORMAT "]", interpreter_frame_local_at(0)); | |
| 626 // method | |
| 627 st->print(" - method [" INTPTR_FORMAT "]", (address)interpreter_frame_method()); | |
| 628 st->fill_to(23); | |
| 629 st->print("; "); | |
| 630 interpreter_frame_method()->print_name(st); | |
| 631 st->cr(); | |
| 632 #endif | |
| 633 } | |
| 634 | |
| 635 // Return whether the frame is in the VM or os indicating a Hotspot problem. | |
| 636 // Otherwise, it's likely a bug in the native library that the Java code calls, | |
| 637 // hopefully indicating where to submit bugs. | |
| 638 static void print_C_frame(outputStream* st, char* buf, int buflen, address pc) { | |
| 639 // C/C++ frame | |
| 640 bool in_vm = os::address_is_in_vm(pc); | |
| 641 st->print(in_vm ? "V" : "C"); | |
| 642 | |
| 643 int offset; | |
| 644 bool found; | |
| 645 | |
| 646 // libname | |
| 647 found = os::dll_address_to_library_name(pc, buf, buflen, &offset); | |
| 648 if (found) { | |
| 649 // skip directory names | |
| 650 const char *p1, *p2; | |
| 651 p1 = buf; | |
| 652 int len = (int)strlen(os::file_separator()); | |
| 653 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; | |
| 654 st->print(" [%s+0x%x]", p1, offset); | |
| 655 } else { | |
| 656 st->print(" " PTR_FORMAT, pc); | |
| 657 } | |
| 658 | |
| 659 // function name - os::dll_address_to_function_name() may return confusing | |
| 660 // names if pc is within jvm.dll or libjvm.so, because JVM only has | |
| 661 // JVM_xxxx and a few other symbols in the dynamic symbol table. Do this | |
| 662 // only for native libraries. | |
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663 if (!in_vm || Decoder::can_decode_C_frame_in_vm()) { |
| 0 | 664 found = os::dll_address_to_function_name(pc, buf, buflen, &offset); |
| 665 | |
| 666 if (found) { | |
| 667 st->print(" %s+0x%x", buf, offset); | |
| 668 } | |
| 669 } | |
| 670 } | |
| 671 | |
| 672 // frame::print_on_error() is called by fatal error handler. Notice that we may | |
| 673 // crash inside this function if stack frame is corrupted. The fatal error | |
| 674 // handler can catch and handle the crash. Here we assume the frame is valid. | |
| 675 // | |
| 676 // First letter indicates type of the frame: | |
| 677 // J: Java frame (compiled) | |
| 678 // j: Java frame (interpreted) | |
| 679 // V: VM frame (C/C++) | |
| 680 // v: Other frames running VM generated code (e.g. stubs, adapters, etc.) | |
| 681 // C: C/C++ frame | |
| 682 // | |
| 683 // We don't need detailed frame type as that in frame::print_name(). "C" | |
| 684 // suggests the problem is in user lib; everything else is likely a VM bug. | |
| 685 | |
| 686 void frame::print_on_error(outputStream* st, char* buf, int buflen, bool verbose) const { | |
| 687 if (_cb != NULL) { | |
| 688 if (Interpreter::contains(pc())) { | |
| 689 methodOop m = this->interpreter_frame_method(); | |
| 690 if (m != NULL) { | |
| 691 m->name_and_sig_as_C_string(buf, buflen); | |
| 692 st->print("j %s", buf); | |
| 693 st->print("+%d", this->interpreter_frame_bci()); | |
| 694 } else { | |
| 695 st->print("j " PTR_FORMAT, pc()); | |
| 696 } | |
| 697 } else if (StubRoutines::contains(pc())) { | |
| 698 StubCodeDesc* desc = StubCodeDesc::desc_for(pc()); | |
| 699 if (desc != NULL) { | |
| 700 st->print("v ~StubRoutines::%s", desc->name()); | |
| 701 } else { | |
| 702 st->print("v ~StubRoutines::" PTR_FORMAT, pc()); | |
| 703 } | |
| 704 } else if (_cb->is_buffer_blob()) { | |
| 705 st->print("v ~BufferBlob::%s", ((BufferBlob *)_cb)->name()); | |
| 706 } else if (_cb->is_nmethod()) { | |
| 707 methodOop m = ((nmethod *)_cb)->method(); | |
| 708 if (m != NULL) { | |
| 709 m->name_and_sig_as_C_string(buf, buflen); | |
| 710 st->print("J %s", buf); | |
| 711 } else { | |
| 712 st->print("J " PTR_FORMAT, pc()); | |
| 713 } | |
| 714 } else if (_cb->is_runtime_stub()) { | |
| 715 st->print("v ~RuntimeStub::%s", ((RuntimeStub *)_cb)->name()); | |
| 716 } else if (_cb->is_deoptimization_stub()) { | |
| 717 st->print("v ~DeoptimizationBlob"); | |
| 718 } else if (_cb->is_exception_stub()) { | |
| 719 st->print("v ~ExceptionBlob"); | |
| 720 } else if (_cb->is_safepoint_stub()) { | |
| 721 st->print("v ~SafepointBlob"); | |
| 722 } else { | |
| 723 st->print("v blob " PTR_FORMAT, pc()); | |
| 724 } | |
| 725 } else { | |
| 726 print_C_frame(st, buf, buflen, pc()); | |
| 727 } | |
| 728 } | |
| 729 | |
| 730 | |
| 731 /* | |
| 732 The interpreter_frame_expression_stack_at method in the case of SPARC needs the | |
| 733 max_stack value of the method in order to compute the expression stack address. | |
| 734 It uses the methodOop in order to get the max_stack value but during GC this | |
| 735 methodOop value saved on the frame is changed by reverse_and_push and hence cannot | |
| 736 be used. So we save the max_stack value in the FrameClosure object and pass it | |
| 737 down to the interpreter_frame_expression_stack_at method | |
| 738 */ | |
| 739 class InterpreterFrameClosure : public OffsetClosure { | |
| 740 private: | |
| 741 frame* _fr; | |
| 742 OopClosure* _f; | |
| 743 int _max_locals; | |
| 744 int _max_stack; | |
| 745 | |
| 746 public: | |
| 747 InterpreterFrameClosure(frame* fr, int max_locals, int max_stack, | |
| 748 OopClosure* f) { | |
| 749 _fr = fr; | |
| 750 _max_locals = max_locals; | |
| 751 _max_stack = max_stack; | |
| 752 _f = f; | |
| 753 } | |
| 754 | |
| 755 void offset_do(int offset) { | |
| 756 oop* addr; | |
| 757 if (offset < _max_locals) { | |
| 758 addr = (oop*) _fr->interpreter_frame_local_at(offset); | |
| 759 assert((intptr_t*)addr >= _fr->sp(), "must be inside the frame"); | |
| 760 _f->do_oop(addr); | |
| 761 } else { | |
| 762 addr = (oop*) _fr->interpreter_frame_expression_stack_at((offset - _max_locals)); | |
| 763 // In case of exceptions, the expression stack is invalid and the esp will be reset to express | |
| 764 // this condition. Therefore, we call f only if addr is 'inside' the stack (i.e., addr >= esp for Intel). | |
| 765 bool in_stack; | |
| 766 if (frame::interpreter_frame_expression_stack_direction() > 0) { | |
| 767 in_stack = (intptr_t*)addr <= _fr->interpreter_frame_tos_address(); | |
| 768 } else { | |
| 769 in_stack = (intptr_t*)addr >= _fr->interpreter_frame_tos_address(); | |
| 770 } | |
| 771 if (in_stack) { | |
| 772 _f->do_oop(addr); | |
| 773 } | |
| 774 } | |
| 775 } | |
| 776 | |
| 777 int max_locals() { return _max_locals; } | |
| 778 frame* fr() { return _fr; } | |
| 779 }; | |
| 780 | |
| 781 | |
| 782 class InterpretedArgumentOopFinder: public SignatureInfo { | |
| 783 private: | |
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784 OopClosure* _f; // Closure to invoke |
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785 int _offset; // TOS-relative offset, decremented with each argument |
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786 bool _has_receiver; // true if the callee has a receiver |
| 0 | 787 frame* _fr; |
| 788 | |
| 789 void set(int size, BasicType type) { | |
| 790 _offset -= size; | |
| 791 if (type == T_OBJECT || type == T_ARRAY) oop_offset_do(); | |
| 792 } | |
| 793 | |
| 794 void oop_offset_do() { | |
| 795 oop* addr; | |
| 796 addr = (oop*)_fr->interpreter_frame_tos_at(_offset); | |
| 797 _f->do_oop(addr); | |
| 798 } | |
| 799 | |
| 800 public: | |
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801 InterpretedArgumentOopFinder(Symbol* signature, bool has_receiver, frame* fr, OopClosure* f) : SignatureInfo(signature), _has_receiver(has_receiver) { |
| 0 | 802 // compute size of arguments |
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803 int args_size = ArgumentSizeComputer(signature).size() + (has_receiver ? 1 : 0); |
| 0 | 804 assert(!fr->is_interpreted_frame() || |
| 805 args_size <= fr->interpreter_frame_expression_stack_size(), | |
| 806 "args cannot be on stack anymore"); | |
| 807 // initialize InterpretedArgumentOopFinder | |
| 808 _f = f; | |
| 809 _fr = fr; | |
| 810 _offset = args_size; | |
| 811 } | |
| 812 | |
| 813 void oops_do() { | |
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814 if (_has_receiver) { |
| 0 | 815 --_offset; |
| 816 oop_offset_do(); | |
| 817 } | |
| 818 iterate_parameters(); | |
| 819 } | |
| 820 }; | |
| 821 | |
| 822 | |
| 823 // Entry frame has following form (n arguments) | |
| 824 // +-----------+ | |
| 825 // sp -> | last arg | | |
| 826 // +-----------+ | |
| 827 // : ::: : | |
| 828 // +-----------+ | |
| 829 // (sp+n)->| first arg| | |
| 830 // +-----------+ | |
| 831 | |
| 832 | |
| 833 | |
| 834 // visits and GC's all the arguments in entry frame | |
| 835 class EntryFrameOopFinder: public SignatureInfo { | |
| 836 private: | |
| 837 bool _is_static; | |
| 838 int _offset; | |
| 839 frame* _fr; | |
| 840 OopClosure* _f; | |
| 841 | |
| 842 void set(int size, BasicType type) { | |
| 843 assert (_offset >= 0, "illegal offset"); | |
| 844 if (type == T_OBJECT || type == T_ARRAY) oop_at_offset_do(_offset); | |
| 845 _offset -= size; | |
| 846 } | |
| 847 | |
| 848 void oop_at_offset_do(int offset) { | |
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849 assert (offset >= 0, "illegal offset"); |
| 0 | 850 oop* addr = (oop*) _fr->entry_frame_argument_at(offset); |
| 851 _f->do_oop(addr); | |
| 852 } | |
| 853 | |
| 854 public: | |
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855 EntryFrameOopFinder(frame* frame, Symbol* signature, bool is_static) : SignatureInfo(signature) { |
| 0 | 856 _f = NULL; // will be set later |
| 857 _fr = frame; | |
| 858 _is_static = is_static; | |
| 859 _offset = ArgumentSizeComputer(signature).size() - 1; // last parameter is at index 0 | |
| 860 } | |
| 861 | |
| 862 void arguments_do(OopClosure* f) { | |
| 863 _f = f; | |
| 864 if (!_is_static) oop_at_offset_do(_offset+1); // do the receiver | |
| 865 iterate_parameters(); | |
| 866 } | |
| 867 | |
| 868 }; | |
| 869 | |
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870 oop* frame::interpreter_callee_receiver_addr(Symbol* signature) { |
| 0 | 871 ArgumentSizeComputer asc(signature); |
| 872 int size = asc.size(); | |
| 873 return (oop *)interpreter_frame_tos_at(size); | |
| 874 } | |
| 875 | |
| 876 | |
| 877 void frame::oops_interpreted_do(OopClosure* f, const RegisterMap* map, bool query_oop_map_cache) { | |
| 878 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 879 assert(map != NULL, "map must be set"); | |
| 880 Thread *thread = Thread::current(); | |
| 881 methodHandle m (thread, interpreter_frame_method()); | |
| 882 jint bci = interpreter_frame_bci(); | |
| 883 | |
| 884 assert(Universe::heap()->is_in(m()), "must be valid oop"); | |
| 885 assert(m->is_method(), "checking frame value"); | |
| 886 assert((m->is_native() && bci == 0) || (!m->is_native() && bci >= 0 && bci < m->code_size()), "invalid bci value"); | |
| 887 | |
| 888 // Handle the monitor elements in the activation | |
| 889 for ( | |
| 890 BasicObjectLock* current = interpreter_frame_monitor_end(); | |
| 891 current < interpreter_frame_monitor_begin(); | |
| 892 current = next_monitor_in_interpreter_frame(current) | |
| 893 ) { | |
| 894 #ifdef ASSERT | |
| 895 interpreter_frame_verify_monitor(current); | |
| 896 #endif | |
| 897 current->oops_do(f); | |
| 898 } | |
| 899 | |
| 900 // process fixed part | |
| 901 f->do_oop((oop*)interpreter_frame_method_addr()); | |
| 902 f->do_oop((oop*)interpreter_frame_cache_addr()); | |
| 903 | |
| 904 // Hmm what about the mdp? | |
| 905 #ifdef CC_INTERP | |
| 906 // Interpreter frame in the midst of a call have a methodOop within the | |
| 907 // object. | |
| 908 interpreterState istate = get_interpreterState(); | |
| 909 if (istate->msg() == BytecodeInterpreter::call_method) { | |
| 910 f->do_oop((oop*)&istate->_result._to_call._callee); | |
| 911 } | |
| 912 | |
| 913 #endif /* CC_INTERP */ | |
| 914 | |
| 1908 | 915 #if !defined(PPC) || defined(ZERO) |
| 0 | 916 if (m->is_native()) { |
| 917 #ifdef CC_INTERP | |
| 918 f->do_oop((oop*)&istate->_oop_temp); | |
| 919 #else | |
| 920 f->do_oop((oop*)( fp() + interpreter_frame_oop_temp_offset )); | |
| 921 #endif /* CC_INTERP */ | |
| 922 } | |
|
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923 #else // PPC |
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924 if (m->is_native() && m->is_static()) { |
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925 f->do_oop(interpreter_frame_mirror_addr()); |
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926 } |
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927 #endif // PPC |
| 0 | 928 |
| 929 int max_locals = m->is_native() ? m->size_of_parameters() : m->max_locals(); | |
| 930 | |
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931 Symbol* signature = NULL; |
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932 bool has_receiver = false; |
| 0 | 933 |
| 934 // Process a callee's arguments if we are at a call site | |
| 935 // (i.e., if we are at an invoke bytecode) | |
| 936 // This is used sometimes for calling into the VM, not for another | |
| 937 // interpreted or compiled frame. | |
| 938 if (!m->is_native()) { | |
| 2142 | 939 Bytecode_invoke call = Bytecode_invoke_check(m, bci); |
| 940 if (call.is_valid()) { | |
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941 signature = call.signature(); |
| 2142 | 942 has_receiver = call.has_receiver(); |
| 0 | 943 if (map->include_argument_oops() && |
| 944 interpreter_frame_expression_stack_size() > 0) { | |
| 945 ResourceMark rm(thread); // is this right ??? | |
| 946 // we are at a call site & the expression stack is not empty | |
| 947 // => process callee's arguments | |
| 948 // | |
| 949 // Note: The expression stack can be empty if an exception | |
| 605 | 950 // occurred during method resolution/execution. In all |
| 0 | 951 // cases we empty the expression stack completely be- |
| 952 // fore handling the exception (the exception handling | |
| 953 // code in the interpreter calls a blocking runtime | |
| 954 // routine which can cause this code to be executed). | |
| 955 // (was bug gri 7/27/98) | |
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956 oops_interpreted_arguments_do(signature, has_receiver, f); |
| 0 | 957 } |
| 958 } | |
| 959 } | |
| 960 | |
| 1506 | 961 InterpreterFrameClosure blk(this, max_locals, m->max_stack(), f); |
| 962 | |
| 963 // process locals & expression stack | |
| 964 InterpreterOopMap mask; | |
| 965 if (query_oop_map_cache) { | |
| 966 m->mask_for(bci, &mask); | |
| 0 | 967 } else { |
| 1506 | 968 OopMapCache::compute_one_oop_map(m, bci, &mask); |
| 0 | 969 } |
| 1506 | 970 mask.iterate_oop(&blk); |
| 0 | 971 } |
| 972 | |
| 973 | |
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974 void frame::oops_interpreted_arguments_do(Symbol* signature, bool has_receiver, OopClosure* f) { |
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975 InterpretedArgumentOopFinder finder(signature, has_receiver, this, f); |
| 0 | 976 finder.oops_do(); |
| 977 } | |
| 978 | |
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979 void frame::oops_code_blob_do(OopClosure* f, CodeBlobClosure* cf, const RegisterMap* reg_map) { |
| 0 | 980 assert(_cb != NULL, "sanity check"); |
| 981 if (_cb->oop_maps() != NULL) { | |
| 982 OopMapSet::oops_do(this, reg_map, f); | |
| 983 | |
| 984 // Preserve potential arguments for a callee. We handle this by dispatching | |
| 985 // on the codeblob. For c2i, we do | |
| 986 if (reg_map->include_argument_oops()) { | |
| 987 _cb->preserve_callee_argument_oops(*this, reg_map, f); | |
| 988 } | |
| 989 } | |
| 990 // In cases where perm gen is collected, GC will want to mark | |
| 991 // oops referenced from nmethods active on thread stacks so as to | |
| 992 // prevent them from being collected. However, this visit should be | |
| 993 // restricted to certain phases of the collection only. The | |
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994 // closure decides how it wants nmethods to be traced. |
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995 if (cf != NULL) |
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996 cf->do_code_blob(_cb); |
| 0 | 997 } |
| 998 | |
| 999 class CompiledArgumentOopFinder: public SignatureInfo { | |
| 1000 protected: | |
| 1001 OopClosure* _f; | |
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1002 int _offset; // the current offset, incremented with each argument |
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1003 bool _has_receiver; // true if the callee has a receiver |
| 0 | 1004 frame _fr; |
| 1005 RegisterMap* _reg_map; | |
| 1006 int _arg_size; | |
| 1007 VMRegPair* _regs; // VMReg list of arguments | |
| 1008 | |
| 1009 void set(int size, BasicType type) { | |
| 1010 if (type == T_OBJECT || type == T_ARRAY) handle_oop_offset(); | |
| 1011 _offset += size; | |
| 1012 } | |
| 1013 | |
| 1014 virtual void handle_oop_offset() { | |
| 1015 // Extract low order register number from register array. | |
| 1016 // In LP64-land, the high-order bits are valid but unhelpful. | |
| 1017 VMReg reg = _regs[_offset].first(); | |
| 1018 oop *loc = _fr.oopmapreg_to_location(reg, _reg_map); | |
| 1019 _f->do_oop(loc); | |
| 1020 } | |
| 1021 | |
| 1022 public: | |
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1023 CompiledArgumentOopFinder(Symbol* signature, bool has_receiver, OopClosure* f, frame fr, const RegisterMap* reg_map) |
| 0 | 1024 : SignatureInfo(signature) { |
| 1025 | |
| 1026 // initialize CompiledArgumentOopFinder | |
| 1027 _f = f; | |
| 1028 _offset = 0; | |
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1029 _has_receiver = has_receiver; |
| 0 | 1030 _fr = fr; |
| 1031 _reg_map = (RegisterMap*)reg_map; | |
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1032 _arg_size = ArgumentSizeComputer(signature).size() + (has_receiver ? 1 : 0); |
| 0 | 1033 |
| 1034 int arg_size; | |
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1035 _regs = SharedRuntime::find_callee_arguments(signature, has_receiver, &arg_size); |
| 0 | 1036 assert(arg_size == _arg_size, "wrong arg size"); |
| 1037 } | |
| 1038 | |
| 1039 void oops_do() { | |
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1040 if (_has_receiver) { |
| 0 | 1041 handle_oop_offset(); |
| 1042 _offset++; | |
| 1043 } | |
| 1044 iterate_parameters(); | |
| 1045 } | |
| 1046 }; | |
| 1047 | |
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1048 void frame::oops_compiled_arguments_do(Symbol* signature, bool has_receiver, const RegisterMap* reg_map, OopClosure* f) { |
| 0 | 1049 ResourceMark rm; |
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1050 CompiledArgumentOopFinder finder(signature, has_receiver, f, *this, reg_map); |
| 0 | 1051 finder.oops_do(); |
| 1052 } | |
| 1053 | |
| 1054 | |
| 1055 // Get receiver out of callers frame, i.e. find parameter 0 in callers | |
| 1056 // frame. Consult ADLC for where parameter 0 is to be found. Then | |
| 1057 // check local reg_map for it being a callee-save register or argument | |
| 1058 // register, both of which are saved in the local frame. If not found | |
| 1059 // there, it must be an in-stack argument of the caller. | |
| 1060 // Note: caller.sp() points to callee-arguments | |
| 1061 oop frame::retrieve_receiver(RegisterMap* reg_map) { | |
| 1062 frame caller = *this; | |
| 1063 | |
| 1064 // First consult the ADLC on where it puts parameter 0 for this signature. | |
| 1065 VMReg reg = SharedRuntime::name_for_receiver(); | |
| 1066 oop r = *caller.oopmapreg_to_location(reg, reg_map); | |
| 1067 assert( Universe::heap()->is_in_or_null(r), "bad receiver" ); | |
| 1068 return r; | |
| 1069 } | |
| 1070 | |
| 1071 | |
| 1072 oop* frame::oopmapreg_to_location(VMReg reg, const RegisterMap* reg_map) const { | |
| 1073 if(reg->is_reg()) { | |
| 1074 // If it is passed in a register, it got spilled in the stub frame. | |
| 1075 return (oop *)reg_map->location(reg); | |
| 1076 } else { | |
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1077 int sp_offset_in_bytes = reg->reg2stack() * VMRegImpl::stack_slot_size; |
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1078 return (oop*)(((address)unextended_sp()) + sp_offset_in_bytes); |
| 0 | 1079 } |
| 1080 } | |
| 1081 | |
| 2019 | 1082 BasicLock* frame::get_native_monitor() { |
| 1083 nmethod* nm = (nmethod*)_cb; | |
| 1084 assert(_cb != NULL && _cb->is_nmethod() && nm->method()->is_native(), | |
| 1085 "Should not call this unless it's a native nmethod"); | |
| 1086 int byte_offset = in_bytes(nm->native_basic_lock_sp_offset()); | |
| 0 | 1087 assert(byte_offset >= 0, "should not see invalid offset"); |
| 1088 return (BasicLock*) &sp()[byte_offset / wordSize]; | |
| 1089 } | |
| 1090 | |
| 2019 | 1091 oop frame::get_native_receiver() { |
| 1092 nmethod* nm = (nmethod*)_cb; | |
| 1093 assert(_cb != NULL && _cb->is_nmethod() && nm->method()->is_native(), | |
| 1094 "Should not call this unless it's a native nmethod"); | |
| 1095 int byte_offset = in_bytes(nm->native_receiver_sp_offset()); | |
| 0 | 1096 assert(byte_offset >= 0, "should not see invalid offset"); |
| 1097 oop owner = ((oop*) sp())[byte_offset / wordSize]; | |
| 1098 assert( Universe::heap()->is_in(owner), "bad receiver" ); | |
| 1099 return owner; | |
| 1100 } | |
| 1101 | |
| 1102 void frame::oops_entry_do(OopClosure* f, const RegisterMap* map) { | |
| 1103 assert(map != NULL, "map must be set"); | |
| 1104 if (map->include_argument_oops()) { | |
| 1105 // must collect argument oops, as nobody else is doing it | |
| 1106 Thread *thread = Thread::current(); | |
| 1107 methodHandle m (thread, entry_frame_call_wrapper()->callee_method()); | |
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1108 EntryFrameOopFinder finder(this, m->signature(), m->is_static()); |
| 0 | 1109 finder.arguments_do(f); |
| 1110 } | |
| 1111 // Traverse the Handle Block saved in the entry frame | |
| 1112 entry_frame_call_wrapper()->oops_do(f); | |
| 1113 } | |
| 1114 | |
| 1115 | |
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1116 void frame::oops_do_internal(OopClosure* f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache) { |
|
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1117 #ifndef PRODUCT |
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1118 // simulate GC crash here to dump java thread in error report |
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1119 if (CrashGCForDumpingJavaThread) { |
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1120 char *t = NULL; |
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1121 *t = 'c'; |
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1122 } |
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1123 #endif |
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1124 if (is_interpreted_frame()) { |
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1125 oops_interpreted_do(f, map, use_interpreter_oop_map_cache); |
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1126 } else if (is_entry_frame()) { |
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1127 oops_entry_do(f, map); |
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1128 } else if (CodeCache::contains(pc())) { |
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1129 oops_code_blob_do(f, cf, map); |
| 1692 | 1130 #ifdef SHARK |
| 1131 } else if (is_fake_stub_frame()) { | |
| 1132 // nothing to do | |
| 1133 #endif // SHARK | |
| 0 | 1134 } else { |
| 1135 ShouldNotReachHere(); | |
| 1136 } | |
| 1137 } | |
| 1138 | |
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1139 void frame::nmethods_do(CodeBlobClosure* cf) { |
| 0 | 1140 if (_cb != NULL && _cb->is_nmethod()) { |
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1141 cf->do_code_blob(_cb); |
| 0 | 1142 } |
| 1143 } | |
| 1144 | |
| 1145 | |
| 1146 void frame::gc_prologue() { | |
| 1147 if (is_interpreted_frame()) { | |
| 1148 // set bcx to bci to become methodOop position independent during GC | |
| 1149 interpreter_frame_set_bcx(interpreter_frame_bci()); | |
| 1150 } | |
| 1151 } | |
| 1152 | |
| 1153 | |
| 1154 void frame::gc_epilogue() { | |
| 1155 if (is_interpreted_frame()) { | |
| 1156 // set bcx back to bcp for interpreter | |
| 1157 interpreter_frame_set_bcx((intptr_t)interpreter_frame_bcp()); | |
| 1158 } | |
| 1159 // call processor specific epilog function | |
| 1160 pd_gc_epilog(); | |
| 1161 } | |
| 1162 | |
| 1163 | |
| 1164 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
| 1165 | |
| 1166 void frame::CheckValueClosure::do_oop(oop* p) { | |
| 1167 if (CheckOopishValues && Universe::heap()->is_in_reserved(*p)) { | |
| 1168 warning("value @ " INTPTR_FORMAT " looks oopish (" INTPTR_FORMAT ") (thread = " INTPTR_FORMAT ")", p, (address)*p, Thread::current()); | |
| 1169 } | |
| 1170 } | |
| 1171 frame::CheckValueClosure frame::_check_value; | |
| 1172 | |
| 1173 | |
| 1174 void frame::CheckOopClosure::do_oop(oop* p) { | |
| 1175 if (*p != NULL && !(*p)->is_oop()) { | |
| 1176 warning("value @ " INTPTR_FORMAT " should be an oop (" INTPTR_FORMAT ") (thread = " INTPTR_FORMAT ")", p, (address)*p, Thread::current()); | |
| 1177 } | |
| 1178 } | |
| 1179 frame::CheckOopClosure frame::_check_oop; | |
| 1180 | |
| 1181 void frame::check_derived_oop(oop* base, oop* derived) { | |
| 1182 _check_oop.do_oop(base); | |
| 1183 } | |
| 1184 | |
| 1185 | |
| 1186 void frame::ZapDeadClosure::do_oop(oop* p) { | |
| 1187 if (TraceZapDeadLocals) tty->print_cr("zapping @ " INTPTR_FORMAT " containing " INTPTR_FORMAT, p, (address)*p); | |
| 1188 // Need cast because on _LP64 the conversion to oop is ambiguous. Constant | |
| 1189 // can be either long or int. | |
| 1190 *p = (oop)(int)0xbabebabe; | |
| 1191 } | |
| 1192 frame::ZapDeadClosure frame::_zap_dead; | |
| 1193 | |
| 1194 void frame::zap_dead_locals(JavaThread* thread, const RegisterMap* map) { | |
| 1195 assert(thread == Thread::current(), "need to synchronize to do this to another thread"); | |
| 1196 // Tracing - part 1 | |
| 1197 if (TraceZapDeadLocals) { | |
| 1198 ResourceMark rm(thread); | |
| 1199 tty->print_cr("--------------------------------------------------------------------------------"); | |
| 1200 tty->print("Zapping dead locals in "); | |
| 1201 print_on(tty); | |
| 1202 tty->cr(); | |
| 1203 } | |
| 1204 // Zapping | |
| 1205 if (is_entry_frame ()) zap_dead_entry_locals (thread, map); | |
| 1206 else if (is_interpreted_frame()) zap_dead_interpreted_locals(thread, map); | |
| 1207 else if (is_compiled_frame()) zap_dead_compiled_locals (thread, map); | |
| 1208 | |
| 1209 else | |
| 1210 // could be is_runtime_frame | |
| 1211 // so remove error: ShouldNotReachHere(); | |
| 1212 ; | |
| 1213 // Tracing - part 2 | |
| 1214 if (TraceZapDeadLocals) { | |
| 1215 tty->cr(); | |
| 1216 } | |
| 1217 } | |
| 1218 | |
| 1219 | |
| 1220 void frame::zap_dead_interpreted_locals(JavaThread *thread, const RegisterMap* map) { | |
| 1221 // get current interpreter 'pc' | |
| 1222 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 1223 methodOop m = interpreter_frame_method(); | |
| 1224 int bci = interpreter_frame_bci(); | |
| 1225 | |
| 1226 int max_locals = m->is_native() ? m->size_of_parameters() : m->max_locals(); | |
| 1227 | |
| 1506 | 1228 // process dynamic part |
| 1229 InterpreterFrameClosure value_blk(this, max_locals, m->max_stack(), | |
| 1230 &_check_value); | |
| 1231 InterpreterFrameClosure oop_blk(this, max_locals, m->max_stack(), | |
| 1232 &_check_oop ); | |
| 1233 InterpreterFrameClosure dead_blk(this, max_locals, m->max_stack(), | |
| 1234 &_zap_dead ); | |
| 0 | 1235 |
| 1506 | 1236 // get frame map |
| 1237 InterpreterOopMap mask; | |
| 1238 m->mask_for(bci, &mask); | |
| 1239 mask.iterate_all( &oop_blk, &value_blk, &dead_blk); | |
| 0 | 1240 } |
| 1241 | |
| 1242 | |
| 1243 void frame::zap_dead_compiled_locals(JavaThread* thread, const RegisterMap* reg_map) { | |
| 1244 | |
| 1245 ResourceMark rm(thread); | |
| 1246 assert(_cb != NULL, "sanity check"); | |
| 1247 if (_cb->oop_maps() != NULL) { | |
|
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1248 OopMapSet::all_do(this, reg_map, &_check_oop, check_derived_oop, &_check_value); |
| 0 | 1249 } |
| 1250 } | |
| 1251 | |
| 1252 | |
| 1253 void frame::zap_dead_entry_locals(JavaThread*, const RegisterMap*) { | |
| 1254 if (TraceZapDeadLocals) warning("frame::zap_dead_entry_locals unimplemented"); | |
| 1255 } | |
| 1256 | |
| 1257 | |
| 1258 void frame::zap_dead_deoptimized_locals(JavaThread*, const RegisterMap*) { | |
| 1259 if (TraceZapDeadLocals) warning("frame::zap_dead_deoptimized_locals unimplemented"); | |
| 1260 } | |
| 1261 | |
| 1262 # endif // ENABLE_ZAP_DEAD_LOCALS | |
| 1263 | |
| 1264 void frame::verify(const RegisterMap* map) { | |
| 1265 // for now make sure receiver type is correct | |
| 1266 if (is_interpreted_frame()) { | |
| 1267 methodOop method = interpreter_frame_method(); | |
| 1268 guarantee(method->is_method(), "method is wrong in frame::verify"); | |
| 1269 if (!method->is_static()) { | |
| 1270 // fetch the receiver | |
| 1271 oop* p = (oop*) interpreter_frame_local_at(0); | |
| 1272 // make sure we have the right receiver type | |
| 1273 } | |
| 1274 } | |
| 1275 COMPILER2_PRESENT(assert(DerivedPointerTable::is_empty(), "must be empty before verify");) | |
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148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
605
diff
changeset
|
1276 oops_do_internal(&VerifyOopClosure::verify_oop, NULL, (RegisterMap*)map, false); |
| 0 | 1277 } |
| 1278 | |
| 1279 | |
| 1280 #ifdef ASSERT | |
| 1281 bool frame::verify_return_pc(address x) { | |
| 1282 if (StubRoutines::returns_to_call_stub(x)) { | |
| 1283 return true; | |
| 1284 } | |
| 1285 if (CodeCache::contains(x)) { | |
| 1286 return true; | |
| 1287 } | |
| 1288 if (Interpreter::contains(x)) { | |
| 1289 return true; | |
| 1290 } | |
| 1291 return false; | |
| 1292 } | |
| 1293 #endif | |
| 1294 | |
| 1295 | |
| 1296 #ifdef ASSERT | |
| 1297 void frame::interpreter_frame_verify_monitor(BasicObjectLock* value) const { | |
| 1298 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
| 1299 // verify that the value is in the right part of the frame | |
| 1300 address low_mark = (address) interpreter_frame_monitor_end(); | |
| 1301 address high_mark = (address) interpreter_frame_monitor_begin(); | |
| 1302 address current = (address) value; | |
| 1303 | |
| 1304 const int monitor_size = frame::interpreter_frame_monitor_size(); | |
| 1305 guarantee((high_mark - current) % monitor_size == 0 , "Misaligned top of BasicObjectLock*"); | |
| 1306 guarantee( high_mark > current , "Current BasicObjectLock* higher than high_mark"); | |
| 1307 | |
| 1308 guarantee((current - low_mark) % monitor_size == 0 , "Misaligned bottom of BasicObjectLock*"); | |
| 1309 guarantee( current >= low_mark , "Current BasicObjectLock* below than low_mark"); | |
| 1310 } | |
| 1311 #endif | |
| 1312 | |
| 1313 | |
| 1314 //----------------------------------------------------------------------------------- | |
| 1315 // StackFrameStream implementation | |
| 1316 | |
| 1317 StackFrameStream::StackFrameStream(JavaThread *thread, bool update) : _reg_map(thread, update) { | |
| 1318 assert(thread->has_last_Java_frame(), "sanity check"); | |
| 1319 _fr = thread->last_frame(); | |
| 1320 _is_done = false; | |
| 1321 } |