Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/vframeArray.cpp @ 18096:ca6d25be853b jdk8u25-b13
8044269: Analysis of archive files.
Summary: Add checksum verification.
Reviewed-by: iklam, dholmes, mschoene
| author | jiangli |
|---|---|
| date | Tue, 12 Aug 2014 17:46:16 -0400 |
| parents | 0bf37f737702 |
| children | 52b4284cb496 d3f3f7677537 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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 "classfile/vmSymbols.hpp" | |
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27 #include "interpreter/bytecode.hpp" |
| 1972 | 28 #include "interpreter/interpreter.hpp" |
| 29 #include "memory/allocation.inline.hpp" | |
| 30 #include "memory/resourceArea.hpp" | |
| 31 #include "memory/universe.inline.hpp" | |
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32 #include "oops/methodData.hpp" |
| 1972 | 33 #include "oops/oop.inline.hpp" |
| 34 #include "prims/jvmtiThreadState.hpp" | |
| 35 #include "runtime/handles.inline.hpp" | |
| 36 #include "runtime/monitorChunk.hpp" | |
| 37 #include "runtime/sharedRuntime.hpp" | |
| 38 #include "runtime/vframe.hpp" | |
| 39 #include "runtime/vframeArray.hpp" | |
| 40 #include "runtime/vframe_hp.hpp" | |
| 41 #include "utilities/events.hpp" | |
| 42 #ifdef COMPILER2 | |
| 43 #include "opto/runtime.hpp" | |
| 44 #endif | |
| 0 | 45 |
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46 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
| 0 | 47 |
| 48 int vframeArrayElement:: bci(void) const { return (_bci == SynchronizationEntryBCI ? 0 : _bci); } | |
| 49 | |
| 50 void vframeArrayElement::free_monitors(JavaThread* jt) { | |
| 51 if (_monitors != NULL) { | |
| 52 MonitorChunk* chunk = _monitors; | |
| 53 _monitors = NULL; | |
| 54 jt->remove_monitor_chunk(chunk); | |
| 55 delete chunk; | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 void vframeArrayElement::fill_in(compiledVFrame* vf) { | |
| 60 | |
| 61 // Copy the information from the compiled vframe to the | |
| 62 // interpreter frame we will be creating to replace vf | |
| 63 | |
| 64 _method = vf->method(); | |
| 65 _bci = vf->raw_bci(); | |
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66 _reexecute = vf->should_reexecute(); |
| 0 | 67 |
| 68 int index; | |
| 69 | |
| 70 // Get the monitors off-stack | |
| 71 | |
| 72 GrowableArray<MonitorInfo*>* list = vf->monitors(); | |
| 73 if (list->is_empty()) { | |
| 74 _monitors = NULL; | |
| 75 } else { | |
| 76 | |
| 77 // Allocate monitor chunk | |
| 78 _monitors = new MonitorChunk(list->length()); | |
| 79 vf->thread()->add_monitor_chunk(_monitors); | |
| 80 | |
| 81 // Migrate the BasicLocks from the stack to the monitor chunk | |
| 82 for (index = 0; index < list->length(); index++) { | |
| 83 MonitorInfo* monitor = list->at(index); | |
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84 assert(!monitor->owner_is_scalar_replaced(), "object should be reallocated already"); |
| 0 | 85 assert(monitor->owner() == NULL || (!monitor->owner()->is_unlocked() && !monitor->owner()->has_bias_pattern()), "object must be null or locked, and unbiased"); |
| 86 BasicObjectLock* dest = _monitors->at(index); | |
| 87 dest->set_obj(monitor->owner()); | |
| 88 monitor->lock()->move_to(monitor->owner(), dest->lock()); | |
| 89 } | |
| 90 } | |
| 91 | |
| 92 // Convert the vframe locals and expressions to off stack | |
| 93 // values. Because we will not gc all oops can be converted to | |
| 94 // intptr_t (i.e. a stack slot) and we are fine. This is | |
| 95 // good since we are inside a HandleMark and the oops in our | |
| 96 // collection would go away between packing them here and | |
| 97 // unpacking them in unpack_on_stack. | |
| 98 | |
| 99 // First the locals go off-stack | |
| 100 | |
| 101 // FIXME this seems silly it creates a StackValueCollection | |
| 102 // in order to get the size to then copy them and | |
| 103 // convert the types to intptr_t size slots. Seems like it | |
| 104 // could do it in place... Still uses less memory than the | |
| 105 // old way though | |
| 106 | |
| 107 StackValueCollection *locs = vf->locals(); | |
| 108 _locals = new StackValueCollection(locs->size()); | |
| 109 for(index = 0; index < locs->size(); index++) { | |
| 110 StackValue* value = locs->at(index); | |
| 111 switch(value->type()) { | |
| 112 case T_OBJECT: | |
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113 assert(!value->obj_is_scalar_replaced(), "object should be reallocated already"); |
| 0 | 114 // preserve object type |
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115 _locals->add( new StackValue(cast_from_oop<intptr_t>((value->get_obj()())), T_OBJECT )); |
| 0 | 116 break; |
| 117 case T_CONFLICT: | |
| 118 // A dead local. Will be initialized to null/zero. | |
| 119 _locals->add( new StackValue()); | |
| 120 break; | |
| 121 case T_INT: | |
| 122 _locals->add( new StackValue(value->get_int())); | |
| 123 break; | |
| 124 default: | |
| 125 ShouldNotReachHere(); | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 // Now the expressions off-stack | |
| 130 // Same silliness as above | |
| 131 | |
| 132 StackValueCollection *exprs = vf->expressions(); | |
| 133 _expressions = new StackValueCollection(exprs->size()); | |
| 134 for(index = 0; index < exprs->size(); index++) { | |
| 135 StackValue* value = exprs->at(index); | |
| 136 switch(value->type()) { | |
| 137 case T_OBJECT: | |
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138 assert(!value->obj_is_scalar_replaced(), "object should be reallocated already"); |
| 0 | 139 // preserve object type |
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140 _expressions->add( new StackValue(cast_from_oop<intptr_t>((value->get_obj()())), T_OBJECT )); |
| 0 | 141 break; |
| 142 case T_CONFLICT: | |
| 143 // A dead stack element. Will be initialized to null/zero. | |
| 144 // This can occur when the compiler emits a state in which stack | |
| 145 // elements are known to be dead (because of an imminent exception). | |
| 146 _expressions->add( new StackValue()); | |
| 147 break; | |
| 148 case T_INT: | |
| 149 _expressions->add( new StackValue(value->get_int())); | |
| 150 break; | |
| 151 default: | |
| 152 ShouldNotReachHere(); | |
| 153 } | |
| 154 } | |
| 155 } | |
| 156 | |
| 157 int unpack_counter = 0; | |
| 158 | |
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159 void vframeArrayElement::unpack_on_stack(int caller_actual_parameters, |
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160 int callee_parameters, |
| 0 | 161 int callee_locals, |
| 162 frame* caller, | |
| 163 bool is_top_frame, | |
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164 bool is_bottom_frame, |
| 0 | 165 int exec_mode) { |
| 166 JavaThread* thread = (JavaThread*) Thread::current(); | |
| 167 | |
| 168 // Look at bci and decide on bcp and continuation pc | |
| 169 address bcp; | |
| 170 // C++ interpreter doesn't need a pc since it will figure out what to do when it | |
| 171 // begins execution | |
| 172 address pc; | |
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173 bool use_next_mdp = false; // true if we should use the mdp associated with the next bci |
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174 // rather than the one associated with bcp |
| 0 | 175 if (raw_bci() == SynchronizationEntryBCI) { |
| 176 // We are deoptimizing while hanging in prologue code for synchronized method | |
| 177 bcp = method()->bcp_from(0); // first byte code | |
| 178 pc = Interpreter::deopt_entry(vtos, 0); // step = 0 since we don't skip current bytecode | |
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179 } else if (should_reexecute()) { //reexecute this bytecode |
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180 assert(is_top_frame, "reexecute allowed only for the top frame"); |
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181 bcp = method()->bcp_from(bci()); |
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182 pc = Interpreter::deopt_reexecute_entry(method(), bcp); |
| 0 | 183 } else { |
| 184 bcp = method()->bcp_from(bci()); | |
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185 pc = Interpreter::deopt_continue_after_entry(method(), bcp, callee_parameters, is_top_frame); |
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186 use_next_mdp = true; |
| 0 | 187 } |
| 188 assert(Bytecodes::is_defined(*bcp), "must be a valid bytecode"); | |
| 189 | |
| 190 // Monitorenter and pending exceptions: | |
| 191 // | |
| 192 // For Compiler2, there should be no pending exception when deoptimizing at monitorenter | |
| 193 // because there is no safepoint at the null pointer check (it is either handled explicitly | |
| 194 // or prior to the monitorenter) and asynchronous exceptions are not made "pending" by the | |
| 195 // runtime interface for the slow case (see JRT_ENTRY_FOR_MONITORENTER). If an asynchronous | |
| 196 // exception was processed, the bytecode pointer would have to be extended one bytecode beyond | |
| 197 // the monitorenter to place it in the proper exception range. | |
| 198 // | |
| 199 // For Compiler1, deoptimization can occur while throwing a NullPointerException at monitorenter, | |
| 200 // in which case bcp should point to the monitorenter since it is within the exception's range. | |
| 201 | |
| 202 assert(*bcp != Bytecodes::_monitorenter || is_top_frame, "a _monitorenter must be a top frame"); | |
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203 assert(thread->deopt_nmethod() != NULL, "nmethod should be known"); |
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204 guarantee(!(thread->deopt_nmethod()->is_compiled_by_c2() && |
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205 *bcp == Bytecodes::_monitorenter && |
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206 exec_mode == Deoptimization::Unpack_exception), |
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207 "shouldn't get exception during monitorenter"); |
| 0 | 208 |
| 209 int popframe_preserved_args_size_in_bytes = 0; | |
| 210 int popframe_preserved_args_size_in_words = 0; | |
| 211 if (is_top_frame) { | |
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212 JvmtiThreadState *state = thread->jvmti_thread_state(); |
| 0 | 213 if (JvmtiExport::can_pop_frame() && |
| 214 (thread->has_pending_popframe() || thread->popframe_forcing_deopt_reexecution())) { | |
| 215 if (thread->has_pending_popframe()) { | |
| 216 // Pop top frame after deoptimization | |
| 217 #ifndef CC_INTERP | |
| 218 pc = Interpreter::remove_activation_preserving_args_entry(); | |
| 219 #else | |
| 220 // Do an uncommon trap type entry. c++ interpreter will know | |
| 221 // to pop frame and preserve the args | |
| 222 pc = Interpreter::deopt_entry(vtos, 0); | |
| 223 use_next_mdp = false; | |
| 224 #endif | |
| 225 } else { | |
| 226 // Reexecute invoke in top frame | |
| 227 pc = Interpreter::deopt_entry(vtos, 0); | |
| 228 use_next_mdp = false; | |
| 229 popframe_preserved_args_size_in_bytes = in_bytes(thread->popframe_preserved_args_size()); | |
| 230 // Note: the PopFrame-related extension of the expression stack size is done in | |
| 231 // Deoptimization::fetch_unroll_info_helper | |
| 232 popframe_preserved_args_size_in_words = in_words(thread->popframe_preserved_args_size_in_words()); | |
| 233 } | |
| 234 } else if (JvmtiExport::can_force_early_return() && state != NULL && state->is_earlyret_pending()) { | |
| 235 // Force early return from top frame after deoptimization | |
| 236 #ifndef CC_INTERP | |
| 237 pc = Interpreter::remove_activation_early_entry(state->earlyret_tos()); | |
| 238 #endif | |
| 239 } else { | |
| 240 // Possibly override the previous pc computation of the top (youngest) frame | |
| 241 switch (exec_mode) { | |
| 242 case Deoptimization::Unpack_deopt: | |
| 243 // use what we've got | |
| 244 break; | |
| 245 case Deoptimization::Unpack_exception: | |
| 246 // exception is pending | |
| 1295 | 247 pc = SharedRuntime::raw_exception_handler_for_return_address(thread, pc); |
| 0 | 248 // [phh] We're going to end up in some handler or other, so it doesn't |
| 249 // matter what mdp we point to. See exception_handler_for_exception() | |
| 250 // in interpreterRuntime.cpp. | |
| 251 break; | |
| 252 case Deoptimization::Unpack_uncommon_trap: | |
| 253 case Deoptimization::Unpack_reexecute: | |
| 254 // redo last byte code | |
| 255 pc = Interpreter::deopt_entry(vtos, 0); | |
| 256 use_next_mdp = false; | |
| 257 break; | |
| 258 default: | |
| 259 ShouldNotReachHere(); | |
| 260 } | |
| 261 } | |
| 262 } | |
| 263 | |
| 264 // Setup the interpreter frame | |
| 265 | |
| 266 assert(method() != NULL, "method must exist"); | |
| 267 int temps = expressions()->size(); | |
| 268 | |
| 269 int locks = monitors() == NULL ? 0 : monitors()->number_of_monitors(); | |
| 270 | |
| 271 Interpreter::layout_activation(method(), | |
| 272 temps + callee_parameters, | |
| 273 popframe_preserved_args_size_in_words, | |
| 274 locks, | |
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275 caller_actual_parameters, |
| 0 | 276 callee_parameters, |
| 277 callee_locals, | |
| 278 caller, | |
| 279 iframe(), | |
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280 is_top_frame, |
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281 is_bottom_frame); |
| 0 | 282 |
| 283 // Update the pc in the frame object and overwrite the temporary pc | |
| 284 // we placed in the skeletal frame now that we finally know the | |
| 285 // exact interpreter address we should use. | |
| 286 | |
| 287 _frame.patch_pc(thread, pc); | |
| 288 | |
| 289 assert (!method()->is_synchronized() || locks > 0, "synchronized methods must have monitors"); | |
| 290 | |
| 291 BasicObjectLock* top = iframe()->interpreter_frame_monitor_begin(); | |
| 292 for (int index = 0; index < locks; index++) { | |
| 293 top = iframe()->previous_monitor_in_interpreter_frame(top); | |
| 294 BasicObjectLock* src = _monitors->at(index); | |
| 295 top->set_obj(src->obj()); | |
| 296 src->lock()->move_to(src->obj(), top->lock()); | |
| 297 } | |
| 298 if (ProfileInterpreter) { | |
| 299 iframe()->interpreter_frame_set_mdx(0); // clear out the mdp. | |
| 300 } | |
| 301 iframe()->interpreter_frame_set_bcx((intptr_t)bcp); // cannot use bcp because frame is not initialized yet | |
| 302 if (ProfileInterpreter) { | |
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303 MethodData* mdo = method()->method_data(); |
| 0 | 304 if (mdo != NULL) { |
| 305 int bci = iframe()->interpreter_frame_bci(); | |
| 306 if (use_next_mdp) ++bci; | |
| 307 address mdp = mdo->bci_to_dp(bci); | |
| 308 iframe()->interpreter_frame_set_mdp(mdp); | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 // Unpack expression stack | |
| 313 // If this is an intermediate frame (i.e. not top frame) then this | |
| 314 // only unpacks the part of the expression stack not used by callee | |
| 315 // as parameters. The callee parameters are unpacked as part of the | |
| 316 // callee locals. | |
| 317 int i; | |
| 318 for(i = 0; i < expressions()->size(); i++) { | |
| 319 StackValue *value = expressions()->at(i); | |
| 320 intptr_t* addr = iframe()->interpreter_frame_expression_stack_at(i); | |
| 321 switch(value->type()) { | |
| 322 case T_INT: | |
| 323 *addr = value->get_int(); | |
| 324 break; | |
| 325 case T_OBJECT: | |
| 326 *addr = value->get_int(T_OBJECT); | |
| 327 break; | |
| 328 case T_CONFLICT: | |
| 329 // A dead stack slot. Initialize to null in case it is an oop. | |
| 330 *addr = NULL_WORD; | |
| 331 break; | |
| 332 default: | |
| 333 ShouldNotReachHere(); | |
| 334 } | |
| 335 } | |
| 336 | |
| 337 | |
| 338 // Unpack the locals | |
| 339 for(i = 0; i < locals()->size(); i++) { | |
| 340 StackValue *value = locals()->at(i); | |
| 341 intptr_t* addr = iframe()->interpreter_frame_local_at(i); | |
| 342 switch(value->type()) { | |
| 343 case T_INT: | |
| 344 *addr = value->get_int(); | |
| 345 break; | |
| 346 case T_OBJECT: | |
| 347 *addr = value->get_int(T_OBJECT); | |
| 348 break; | |
| 349 case T_CONFLICT: | |
| 350 // A dead location. If it is an oop then we need a NULL to prevent GC from following it | |
| 351 *addr = NULL_WORD; | |
| 352 break; | |
| 353 default: | |
| 354 ShouldNotReachHere(); | |
| 355 } | |
| 356 } | |
| 357 | |
| 358 if (is_top_frame && JvmtiExport::can_pop_frame() && thread->popframe_forcing_deopt_reexecution()) { | |
| 359 // An interpreted frame was popped but it returns to a deoptimized | |
| 360 // frame. The incoming arguments to the interpreted activation | |
| 361 // were preserved in thread-local storage by the | |
| 362 // remove_activation_preserving_args_entry in the interpreter; now | |
| 363 // we put them back into the just-unpacked interpreter frame. | |
| 364 // Note that this assumes that the locals arena grows toward lower | |
| 365 // addresses. | |
| 366 if (popframe_preserved_args_size_in_words != 0) { | |
| 367 void* saved_args = thread->popframe_preserved_args(); | |
| 368 assert(saved_args != NULL, "must have been saved by interpreter"); | |
| 369 #ifdef ASSERT | |
| 370 assert(popframe_preserved_args_size_in_words <= | |
| 1506 | 371 iframe()->interpreter_frame_expression_stack_size()*Interpreter::stackElementWords, |
| 0 | 372 "expression stack size should have been extended"); |
| 373 #endif // ASSERT | |
| 374 int top_element = iframe()->interpreter_frame_expression_stack_size()-1; | |
| 375 intptr_t* base; | |
| 376 if (frame::interpreter_frame_expression_stack_direction() < 0) { | |
| 377 base = iframe()->interpreter_frame_expression_stack_at(top_element); | |
| 378 } else { | |
| 379 base = iframe()->interpreter_frame_expression_stack(); | |
| 380 } | |
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381 Copy::conjoint_jbytes(saved_args, |
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382 base, |
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383 popframe_preserved_args_size_in_bytes); |
| 0 | 384 thread->popframe_free_preserved_args(); |
| 385 } | |
| 386 } | |
| 387 | |
| 388 #ifndef PRODUCT | |
| 389 if (TraceDeoptimization && Verbose) { | |
| 390 ttyLocker ttyl; | |
| 391 tty->print_cr("[%d Interpreted Frame]", ++unpack_counter); | |
| 392 iframe()->print_on(tty); | |
| 393 RegisterMap map(thread); | |
| 394 vframe* f = vframe::new_vframe(iframe(), &map, thread); | |
| 395 f->print(); | |
| 396 | |
| 397 tty->print_cr("locals size %d", locals()->size()); | |
| 398 tty->print_cr("expression size %d", expressions()->size()); | |
| 399 | |
| 400 method()->print_value(); | |
| 401 tty->cr(); | |
| 402 // method()->print_codes(); | |
| 403 } else if (TraceDeoptimization) { | |
| 404 tty->print(" "); | |
| 405 method()->print_value(); | |
| 2142 | 406 Bytecodes::Code code = Bytecodes::java_code_at(method(), bcp); |
| 0 | 407 int bci = method()->bci_from(bcp); |
| 408 tty->print(" - %s", Bytecodes::name(code)); | |
| 409 tty->print(" @ bci %d ", bci); | |
| 410 tty->print_cr("sp = " PTR_FORMAT, iframe()->sp()); | |
| 411 } | |
| 412 #endif // PRODUCT | |
| 413 | |
| 414 // The expression stack and locals are in the resource area don't leave | |
| 415 // a dangling pointer in the vframeArray we leave around for debug | |
| 416 // purposes | |
| 417 | |
| 418 _locals = _expressions = NULL; | |
| 419 | |
| 420 } | |
| 421 | |
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422 int vframeArrayElement::on_stack_size(int callee_parameters, |
| 0 | 423 int callee_locals, |
| 424 bool is_top_frame, | |
| 425 int popframe_extra_stack_expression_els) const { | |
| 426 assert(method()->max_locals() == locals()->size(), "just checking"); | |
| 427 int locks = monitors() == NULL ? 0 : monitors()->number_of_monitors(); | |
| 428 int temps = expressions()->size(); | |
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429 return Interpreter::size_activation(method()->max_stack(), |
| 0 | 430 temps + callee_parameters, |
| 431 popframe_extra_stack_expression_els, | |
| 432 locks, | |
| 433 callee_parameters, | |
| 434 callee_locals, | |
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435 is_top_frame); |
| 0 | 436 } |
| 437 | |
| 438 | |
| 439 | |
| 440 vframeArray* vframeArray::allocate(JavaThread* thread, int frame_size, GrowableArray<compiledVFrame*>* chunk, | |
| 441 RegisterMap *reg_map, frame sender, frame caller, frame self) { | |
| 442 | |
| 443 // Allocate the vframeArray | |
| 444 vframeArray * result = (vframeArray*) AllocateHeap(sizeof(vframeArray) + // fixed part | |
| 445 sizeof(vframeArrayElement) * (chunk->length() - 1), // variable part | |
| 6197 | 446 mtCompiler); |
| 0 | 447 result->_frames = chunk->length(); |
| 448 result->_owner_thread = thread; | |
| 449 result->_sender = sender; | |
| 450 result->_caller = caller; | |
| 451 result->_original = self; | |
| 452 result->set_unroll_block(NULL); // initialize it | |
| 453 result->fill_in(thread, frame_size, chunk, reg_map); | |
| 454 return result; | |
| 455 } | |
| 456 | |
| 457 void vframeArray::fill_in(JavaThread* thread, | |
| 458 int frame_size, | |
| 459 GrowableArray<compiledVFrame*>* chunk, | |
| 460 const RegisterMap *reg_map) { | |
| 461 // Set owner first, it is used when adding monitor chunks | |
| 462 | |
| 463 _frame_size = frame_size; | |
| 464 for(int i = 0; i < chunk->length(); i++) { | |
| 465 element(i)->fill_in(chunk->at(i)); | |
| 466 } | |
| 467 | |
| 468 // Copy registers for callee-saved registers | |
| 469 if (reg_map != NULL) { | |
| 470 for(int i = 0; i < RegisterMap::reg_count; i++) { | |
| 471 #ifdef AMD64 | |
| 472 // The register map has one entry for every int (32-bit value), so | |
| 473 // 64-bit physical registers have two entries in the map, one for | |
| 474 // each half. Ignore the high halves of 64-bit registers, just like | |
| 475 // frame::oopmapreg_to_location does. | |
| 476 // | |
| 477 // [phh] FIXME: this is a temporary hack! This code *should* work | |
| 478 // correctly w/o this hack, possibly by changing RegisterMap::pd_location | |
| 479 // in frame_amd64.cpp and the values of the phantom high half registers | |
| 480 // in amd64.ad. | |
| 481 // if (VMReg::Name(i) < SharedInfo::stack0 && is_even(i)) { | |
| 482 intptr_t* src = (intptr_t*) reg_map->location(VMRegImpl::as_VMReg(i)); | |
| 483 _callee_registers[i] = src != NULL ? *src : NULL_WORD; | |
| 484 // } else { | |
| 485 // jint* src = (jint*) reg_map->location(VMReg::Name(i)); | |
| 486 // _callee_registers[i] = src != NULL ? *src : NULL_WORD; | |
| 487 // } | |
| 488 #else | |
| 489 jint* src = (jint*) reg_map->location(VMRegImpl::as_VMReg(i)); | |
| 490 _callee_registers[i] = src != NULL ? *src : NULL_WORD; | |
| 491 #endif | |
| 492 if (src == NULL) { | |
| 493 set_location_valid(i, false); | |
| 494 } else { | |
| 495 set_location_valid(i, true); | |
| 496 jint* dst = (jint*) register_location(i); | |
| 497 *dst = *src; | |
| 498 } | |
| 499 } | |
| 500 } | |
| 501 } | |
| 502 | |
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503 void vframeArray::unpack_to_stack(frame &unpack_frame, int exec_mode, int caller_actual_parameters) { |
| 0 | 504 // stack picture |
| 505 // unpack_frame | |
| 506 // [new interpreter frames ] (frames are skeletal but walkable) | |
| 507 // caller_frame | |
| 508 // | |
| 509 // This routine fills in the missing data for the skeletal interpreter frames | |
| 510 // in the above picture. | |
| 511 | |
| 512 // Find the skeletal interpreter frames to unpack into | |
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513 JavaThread* THREAD = JavaThread::current(); |
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514 RegisterMap map(THREAD, false); |
| 0 | 515 // Get the youngest frame we will unpack (last to be unpacked) |
| 516 frame me = unpack_frame.sender(&map); | |
| 517 int index; | |
| 518 for (index = 0; index < frames(); index++ ) { | |
| 519 *element(index)->iframe() = me; | |
| 520 // Get the caller frame (possibly skeletal) | |
| 521 me = me.sender(&map); | |
| 522 } | |
| 523 | |
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524 // Do the unpacking of interpreter frames; the frame at index 0 represents the top activation, so it has no callee |
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525 // Unpack the frames from the oldest (frames() -1) to the youngest (0) |
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526 frame* caller_frame = &me; |
| 0 | 527 for (index = frames() - 1; index >= 0 ; index--) { |
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528 vframeArrayElement* elem = element(index); // caller |
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529 int callee_parameters, callee_locals; |
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530 if (index == 0) { |
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531 callee_parameters = callee_locals = 0; |
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532 } else { |
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533 methodHandle caller = elem->method(); |
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534 methodHandle callee = element(index - 1)->method(); |
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535 Bytecode_invoke inv(caller, elem->bci()); |
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536 // invokedynamic instructions don't have a class but obviously don't have a MemberName appendix. |
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537 // NOTE: Use machinery here that avoids resolving of any kind. |
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538 const bool has_member_arg = |
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539 !inv.is_invokedynamic() && MethodHandles::has_member_arg(inv.klass(), inv.name()); |
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540 callee_parameters = callee->size_of_parameters() + (has_member_arg ? 1 : 0); |
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541 callee_locals = callee->max_locals(); |
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542 } |
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543 elem->unpack_on_stack(caller_actual_parameters, |
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544 callee_parameters, |
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545 callee_locals, |
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546 caller_frame, |
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547 index == 0, |
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548 index == frames() - 1, |
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549 exec_mode); |
| 0 | 550 if (index == frames() - 1) { |
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551 Deoptimization::unwind_callee_save_values(elem->iframe(), this); |
| 0 | 552 } |
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553 caller_frame = elem->iframe(); |
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554 caller_actual_parameters = callee_parameters; |
| 0 | 555 } |
| 556 deallocate_monitor_chunks(); | |
| 557 } | |
| 558 | |
| 559 void vframeArray::deallocate_monitor_chunks() { | |
| 560 JavaThread* jt = JavaThread::current(); | |
| 561 for (int index = 0; index < frames(); index++ ) { | |
| 562 element(index)->free_monitors(jt); | |
| 563 } | |
| 564 } | |
| 565 | |
| 566 #ifndef PRODUCT | |
| 567 | |
| 568 bool vframeArray::structural_compare(JavaThread* thread, GrowableArray<compiledVFrame*>* chunk) { | |
| 569 if (owner_thread() != thread) return false; | |
| 570 int index = 0; | |
| 571 #if 0 // FIXME can't do this comparison | |
| 572 | |
| 573 // Compare only within vframe array. | |
| 574 for (deoptimizedVFrame* vf = deoptimizedVFrame::cast(vframe_at(first_index())); vf; vf = vf->deoptimized_sender_or_null()) { | |
| 575 if (index >= chunk->length() || !vf->structural_compare(chunk->at(index))) return false; | |
| 576 index++; | |
| 577 } | |
| 578 if (index != chunk->length()) return false; | |
| 579 #endif | |
| 580 | |
| 581 return true; | |
| 582 } | |
| 583 | |
| 584 #endif | |
| 585 | |
| 586 address vframeArray::register_location(int i) const { | |
| 587 assert(0 <= i && i < RegisterMap::reg_count, "index out of bounds"); | |
| 588 return (address) & _callee_registers[i]; | |
| 589 } | |
| 590 | |
| 591 | |
| 592 #ifndef PRODUCT | |
| 593 | |
| 594 // Printing | |
| 595 | |
| 596 // Note: we cannot have print_on as const, as we allocate inside the method | |
| 597 void vframeArray::print_on_2(outputStream* st) { | |
| 598 st->print_cr(" - sp: " INTPTR_FORMAT, sp()); | |
| 599 st->print(" - thread: "); | |
| 600 Thread::current()->print(); | |
| 601 st->print_cr(" - frame size: %d", frame_size()); | |
| 602 for (int index = 0; index < frames() ; index++ ) { | |
| 603 element(index)->print(st); | |
| 604 } | |
| 605 } | |
| 606 | |
| 607 void vframeArrayElement::print(outputStream* st) { | |
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608 st->print_cr(" - interpreter_frame -> sp: " INTPTR_FORMAT, iframe()->sp()); |
| 0 | 609 } |
| 610 | |
| 611 void vframeArray::print_value_on(outputStream* st) const { | |
| 612 st->print_cr("vframeArray [%d] ", frames()); | |
| 613 } | |
| 614 | |
| 615 | |
| 616 #endif |