1 /* 2 * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "precompiled.hpp" 27 #include "asm/assembler.hpp" 28 #include "interpreter/bytecodeHistogram.hpp" 29 #include "interpreter/cppInterpreter.hpp" 30 #include "interpreter/cppInterpreterGenerator.hpp" 31 #include "interpreter/interpreter.hpp" 32 #include "interpreter/interpreterRuntime.hpp" 33 #include "oops/arrayOop.hpp" 34 #include "oops/methodData.hpp" 35 #include "oops/method.hpp" 36 #include "oops/oop.inline.hpp" 37 #include "prims/jvmtiExport.hpp" 38 #include "prims/jvmtiThreadState.hpp" 39 #include "runtime/arguments.hpp" 40 #include "runtime/atomic.hpp" 41 #include "runtime/deoptimization.hpp" 42 #include "runtime/frame.inline.hpp" 43 #include "runtime/interfaceSupport.hpp" 44 #include "runtime/orderAccess.inline.hpp" 45 #include "runtime/sharedRuntime.hpp" 46 #include "runtime/stubRoutines.hpp" 47 #include "runtime/synchronizer.hpp" 48 #include "runtime/timer.hpp" 49 #include "runtime/vframeArray.hpp" 50 #include "stack_zero.inline.hpp" 51 #include "utilities/debug.hpp" 52 #include "utilities/macros.hpp" 53 #ifdef SHARK 54 #include "shark/shark_globals.hpp" 55 #endif 56 57 #ifdef CC_INTERP 58 59 #define fixup_after_potential_safepoint() \ 60 method = istate->method() 61 62 #define CALL_VM_NOCHECK_NOFIX(func) \ 63 thread->set_last_Java_frame(); \ 64 func; \ 65 thread->reset_last_Java_frame(); 66 67 #define CALL_VM_NOCHECK(func) \ 68 CALL_VM_NOCHECK_NOFIX(func) \ 69 fixup_after_potential_safepoint() 70 71 int CppInterpreter::normal_entry(Method* method, intptr_t UNUSED, TRAPS) { 72 JavaThread *thread = (JavaThread *) THREAD; 73 74 // Allocate and initialize our frame. 75 InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0); 76 thread->push_zero_frame(frame); 77 78 // Execute those bytecodes! 79 main_loop(0, THREAD); 80 81 // No deoptimized frames on the stack 82 return 0; 83 } 84 85 intptr_t narrow(BasicType type, intptr_t result) { 86 // mask integer result to narrower return type. 87 switch (type) { 88 case T_BOOLEAN: 89 return result&1; 90 case T_BYTE: 91 return (intptr_t)(jbyte)result; 92 case T_CHAR: 93 return (intptr_t)(uintptr_t)(jchar)result; 94 case T_SHORT: 95 return (intptr_t)(jshort)result; 96 case T_OBJECT: // nothing to do fall through 97 case T_ARRAY: 98 case T_LONG: 99 case T_INT: 100 case T_FLOAT: 101 case T_DOUBLE: 102 case T_VOID: 103 return result; 104 default : ShouldNotReachHere(); 105 } 106 } 107 108 109 void CppInterpreter::main_loop(int recurse, TRAPS) { 110 JavaThread *thread = (JavaThread *) THREAD; 111 ZeroStack *stack = thread->zero_stack(); 112 113 // If we are entering from a deopt we may need to call 114 // ourself a few times in order to get to our frame. 115 if (recurse) 116 main_loop(recurse - 1, THREAD); 117 118 InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame(); 119 interpreterState istate = frame->interpreter_state(); 120 Method* method = istate->method(); 121 122 intptr_t *result = NULL; 123 int result_slots = 0; 124 125 while (true) { 126 // We can set up the frame anchor with everything we want at 127 // this point as we are thread_in_Java and no safepoints can 128 // occur until we go to vm mode. We do have to clear flags 129 // on return from vm but that is it. 130 thread->set_last_Java_frame(); 131 132 // Call the interpreter 133 if (JvmtiExport::can_post_interpreter_events()) 134 BytecodeInterpreter::runWithChecks(istate); 135 else 136 BytecodeInterpreter::run(istate); 137 fixup_after_potential_safepoint(); 138 139 // Clear the frame anchor 140 thread->reset_last_Java_frame(); 141 142 // Examine the message from the interpreter to decide what to do 143 if (istate->msg() == BytecodeInterpreter::call_method) { 144 Method* callee = istate->callee(); 145 146 // Trim back the stack to put the parameters at the top 147 stack->set_sp(istate->stack() + 1); 148 149 // Make the call 150 Interpreter::invoke_method(callee, istate->callee_entry_point(), THREAD); 151 fixup_after_potential_safepoint(); 152 153 // Convert the result 154 istate->set_stack(stack->sp() - 1); 155 156 // Restore the stack 157 stack->set_sp(istate->stack_limit() + 1); 158 159 // Resume the interpreter 160 istate->set_msg(BytecodeInterpreter::method_resume); 161 } 162 else if (istate->msg() == BytecodeInterpreter::more_monitors) { 163 int monitor_words = frame::interpreter_frame_monitor_size(); 164 165 // Allocate the space 166 stack->overflow_check(monitor_words, THREAD); 167 if (HAS_PENDING_EXCEPTION) 168 break; 169 stack->alloc(monitor_words * wordSize); 170 171 // Move the expression stack contents 172 for (intptr_t *p = istate->stack() + 1; p < istate->stack_base(); p++) 173 *(p - monitor_words) = *p; 174 175 // Move the expression stack pointers 176 istate->set_stack_limit(istate->stack_limit() - monitor_words); 177 istate->set_stack(istate->stack() - monitor_words); 178 istate->set_stack_base(istate->stack_base() - monitor_words); 179 180 // Zero the new monitor so the interpreter can find it. 181 ((BasicObjectLock *) istate->stack_base())->set_obj(NULL); 182 183 // Resume the interpreter 184 istate->set_msg(BytecodeInterpreter::got_monitors); 185 } 186 else if (istate->msg() == BytecodeInterpreter::return_from_method) { 187 // Copy the result into the caller's frame 188 result_slots = type2size[method->result_type()]; 189 assert(result_slots >= 0 && result_slots <= 2, "what?"); 190 result = istate->stack() + result_slots; 191 break; 192 } 193 else if (istate->msg() == BytecodeInterpreter::throwing_exception) { 194 assert(HAS_PENDING_EXCEPTION, "should do"); 195 break; 196 } 197 else if (istate->msg() == BytecodeInterpreter::do_osr) { 198 // Unwind the current frame 199 thread->pop_zero_frame(); 200 201 // Remove any extension of the previous frame 202 int extra_locals = method->max_locals() - method->size_of_parameters(); 203 stack->set_sp(stack->sp() + extra_locals); 204 205 // Jump into the OSR method 206 Interpreter::invoke_osr( 207 method, istate->osr_entry(), istate->osr_buf(), THREAD); 208 return; 209 } 210 else { 211 ShouldNotReachHere(); 212 } 213 } 214 215 // Unwind the current frame 216 thread->pop_zero_frame(); 217 218 // Pop our local variables 219 stack->set_sp(stack->sp() + method->max_locals()); 220 221 // Push our result 222 for (int i = 0; i < result_slots; i++) { 223 // Adjust result to smaller 224 union { 225 intptr_t res; 226 jint res_jint; 227 }; 228 res = result[-i]; 229 if (result_slots == 1) { 230 BasicType t = method->result_type(); 231 if (is_subword_type(t)) { 232 res_jint = (jint)narrow(t, res_jint); 233 } 234 } 235 stack->push(res); 236 } 237 } 238 239 int CppInterpreter::native_entry(Method* method, intptr_t UNUSED, TRAPS) { 240 // Make sure method is native and not abstract 241 assert(method->is_native() && !method->is_abstract(), "should be"); 242 243 JavaThread *thread = (JavaThread *) THREAD; 244 ZeroStack *stack = thread->zero_stack(); 245 246 // Allocate and initialize our frame 247 InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0); 248 thread->push_zero_frame(frame); 249 interpreterState istate = frame->interpreter_state(); 250 intptr_t *locals = istate->locals(); 251 252 // Update the invocation counter 253 if ((UseCompiler || CountCompiledCalls) && !method->is_synchronized()) { 254 MethodCounters* mcs = method->method_counters(); 255 if (mcs == NULL) { 256 CALL_VM_NOCHECK(mcs = InterpreterRuntime::build_method_counters(thread, method)); 257 if (HAS_PENDING_EXCEPTION) 258 goto unwind_and_return; 259 } 260 InvocationCounter *counter = mcs->invocation_counter(); 261 counter->increment(); 262 if (counter->reached_InvocationLimit(mcs->backedge_counter())) { 263 CALL_VM_NOCHECK( 264 InterpreterRuntime::frequency_counter_overflow(thread, NULL)); 265 if (HAS_PENDING_EXCEPTION) 266 goto unwind_and_return; 267 } 268 } 269 270 // Lock if necessary 271 BasicObjectLock *monitor; 272 monitor = NULL; 273 if (method->is_synchronized()) { 274 monitor = (BasicObjectLock*) istate->stack_base(); 275 oop lockee = monitor->obj(); 276 markOop disp = lockee->mark()->set_unlocked(); 277 278 monitor->lock()->set_displaced_header(disp); 279 if (Atomic::cmpxchg_ptr(monitor, lockee->mark_addr(), disp) != disp) { 280 if (thread->is_lock_owned((address) disp->clear_lock_bits())) { 281 monitor->lock()->set_displaced_header(NULL); 282 } 283 else { 284 CALL_VM_NOCHECK(InterpreterRuntime::monitorenter(thread, monitor)); 285 if (HAS_PENDING_EXCEPTION) 286 goto unwind_and_return; 287 } 288 } 289 } 290 291 // Get the signature handler 292 InterpreterRuntime::SignatureHandler *handler; { 293 address handlerAddr = method->signature_handler(); 294 if (handlerAddr == NULL) { 295 CALL_VM_NOCHECK(InterpreterRuntime::prepare_native_call(thread, method)); 296 if (HAS_PENDING_EXCEPTION) 297 goto unlock_unwind_and_return; 298 299 handlerAddr = method->signature_handler(); 300 assert(handlerAddr != NULL, "eh?"); 301 } 302 if (handlerAddr == (address) InterpreterRuntime::slow_signature_handler) { 303 CALL_VM_NOCHECK(handlerAddr = 304 InterpreterRuntime::slow_signature_handler(thread, method, NULL,NULL)); 305 if (HAS_PENDING_EXCEPTION) 306 goto unlock_unwind_and_return; 307 } 308 handler = \ 309 InterpreterRuntime::SignatureHandler::from_handlerAddr(handlerAddr); 310 } 311 312 // Get the native function entry point 313 address function; 314 function = method->native_function(); 315 assert(function != NULL, "should be set if signature handler is"); 316 317 // Build the argument list 318 stack->overflow_check(handler->argument_count() * 2, THREAD); 319 if (HAS_PENDING_EXCEPTION) 320 goto unlock_unwind_and_return; 321 322 void **arguments; 323 void *mirror; { 324 arguments = 325 (void **) stack->alloc(handler->argument_count() * sizeof(void **)); 326 void **dst = arguments; 327 328 void *env = thread->jni_environment(); 329 *(dst++) = &env; 330 331 if (method->is_static()) { 332 istate->set_oop_temp( 333 method->constants()->pool_holder()->java_mirror()); 334 mirror = istate->oop_temp_addr(); 335 *(dst++) = &mirror; 336 } 337 338 intptr_t *src = locals; 339 for (int i = dst - arguments; i < handler->argument_count(); i++) { 340 ffi_type *type = handler->argument_type(i); 341 if (type == &ffi_type_pointer) { 342 if (*src) { 343 stack->push((intptr_t) src); 344 *(dst++) = stack->sp(); 345 } 346 else { 347 *(dst++) = src; 348 } 349 src--; 350 } 351 else if (type->size == 4) { 352 *(dst++) = src--; 353 } 354 else if (type->size == 8) { 355 src--; 356 *(dst++) = src--; 357 } 358 else { 359 ShouldNotReachHere(); 360 } 361 } 362 } 363 364 // Set up the Java frame anchor 365 thread->set_last_Java_frame(); 366 367 // Change the thread state to _thread_in_native 368 ThreadStateTransition::transition_from_java(thread, _thread_in_native); 369 370 // Make the call 371 intptr_t result[4 - LogBytesPerWord]; 372 ffi_call(handler->cif(), (void (*)()) function, result, arguments); 373 374 // Change the thread state back to _thread_in_Java. 375 // ThreadStateTransition::transition_from_native() cannot be used 376 // here because it does not check for asynchronous exceptions. 377 // We have to manage the transition ourself. 378 thread->set_thread_state(_thread_in_native_trans); 379 380 // Make sure new state is visible in the GC thread 381 if (os::is_MP()) { 382 if (UseMembar) { 383 OrderAccess::fence(); 384 } 385 else { 386 InterfaceSupport::serialize_memory(thread); 387 } 388 } 389 390 // Handle safepoint operations, pending suspend requests, 391 // and pending asynchronous exceptions. 392 if (SafepointSynchronize::do_call_back() || 393 thread->has_special_condition_for_native_trans()) { 394 JavaThread::check_special_condition_for_native_trans(thread); 395 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops()); 396 } 397 398 // Finally we can change the thread state to _thread_in_Java. 399 thread->set_thread_state(_thread_in_Java); 400 fixup_after_potential_safepoint(); 401 402 // Clear the frame anchor 403 thread->reset_last_Java_frame(); 404 405 // If the result was an oop then unbox it and store it in 406 // oop_temp where the garbage collector can see it before 407 // we release the handle it might be protected by. 408 if (handler->result_type() == &ffi_type_pointer) { 409 if (result[0]) 410 istate->set_oop_temp(*(oop *) result[0]); 411 else 412 istate->set_oop_temp(NULL); 413 } 414 415 // Reset handle block 416 thread->active_handles()->clear(); 417 418 unlock_unwind_and_return: 419 420 // Unlock if necessary 421 if (monitor) { 422 BasicLock *lock = monitor->lock(); 423 markOop header = lock->displaced_header(); 424 oop rcvr = monitor->obj(); 425 monitor->set_obj(NULL); 426 427 if (header != NULL) { 428 if (Atomic::cmpxchg_ptr(header, rcvr->mark_addr(), lock) != lock) { 429 monitor->set_obj(rcvr); { 430 HandleMark hm(thread); 431 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(thread, monitor)); 432 } 433 } 434 } 435 } 436 437 unwind_and_return: 438 439 // Unwind the current activation 440 thread->pop_zero_frame(); 441 442 // Pop our parameters 443 stack->set_sp(stack->sp() + method->size_of_parameters()); 444 445 // Push our result 446 if (!HAS_PENDING_EXCEPTION) { 447 BasicType type = method->result_type(); 448 stack->set_sp(stack->sp() - type2size[type]); 449 450 switch (type) { 451 case T_VOID: 452 break; 453 454 case T_BOOLEAN: 455 #ifndef VM_LITTLE_ENDIAN 456 result[0] <<= (BitsPerWord - BitsPerByte); 457 #endif 458 SET_LOCALS_INT(*(jboolean *) result != 0, 0); 459 break; 460 461 case T_CHAR: 462 #ifndef VM_LITTLE_ENDIAN 463 result[0] <<= (BitsPerWord - BitsPerShort); 464 #endif 465 SET_LOCALS_INT(*(jchar *) result, 0); 466 break; 467 468 case T_BYTE: 469 #ifndef VM_LITTLE_ENDIAN 470 result[0] <<= (BitsPerWord - BitsPerByte); 471 #endif 472 SET_LOCALS_INT(*(jbyte *) result, 0); 473 break; 474 475 case T_SHORT: 476 #ifndef VM_LITTLE_ENDIAN 477 result[0] <<= (BitsPerWord - BitsPerShort); 478 #endif 479 SET_LOCALS_INT(*(jshort *) result, 0); 480 break; 481 482 case T_INT: 483 #ifndef VM_LITTLE_ENDIAN 484 result[0] <<= (BitsPerWord - BitsPerInt); 485 #endif 486 SET_LOCALS_INT(*(jint *) result, 0); 487 break; 488 489 case T_LONG: 490 SET_LOCALS_LONG(*(jlong *) result, 0); 491 break; 492 493 case T_FLOAT: 494 SET_LOCALS_FLOAT(*(jfloat *) result, 0); 495 break; 496 497 case T_DOUBLE: 498 SET_LOCALS_DOUBLE(*(jdouble *) result, 0); 499 break; 500 501 case T_OBJECT: 502 case T_ARRAY: 503 SET_LOCALS_OBJECT(istate->oop_temp(), 0); 504 break; 505 506 default: 507 ShouldNotReachHere(); 508 } 509 } 510 511 // No deoptimized frames on the stack 512 return 0; 513 } 514 515 int CppInterpreter::accessor_entry(Method* method, intptr_t UNUSED, TRAPS) { 516 JavaThread *thread = (JavaThread *) THREAD; 517 ZeroStack *stack = thread->zero_stack(); 518 intptr_t *locals = stack->sp(); 519 520 // Drop into the slow path if we need a safepoint check 521 if (SafepointSynchronize::do_call_back()) { 522 return normal_entry(method, 0, THREAD); 523 } 524 525 // Load the object pointer and drop into the slow path 526 // if we have a NullPointerException 527 oop object = LOCALS_OBJECT(0); 528 if (object == NULL) { 529 return normal_entry(method, 0, THREAD); 530 } 531 532 // Read the field index from the bytecode, which looks like this: 533 // 0: aload_0 534 // 1: getfield 535 // 2: index 536 // 3: index 537 // 4: ireturn/areturn/freturn/lreturn/dreturn 538 // NB this is not raw bytecode: index is in machine order 539 u1 *code = method->code_base(); 540 assert(code[0] == Bytecodes::_aload_0 && 541 code[1] == Bytecodes::_getfield && 542 (code[4] == Bytecodes::_ireturn || 543 code[4] == Bytecodes::_freturn || 544 code[4] == Bytecodes::_lreturn || 545 code[4] == Bytecodes::_dreturn || 546 code[4] == Bytecodes::_areturn), "should do"); 547 u2 index = Bytes::get_native_u2(&code[2]); 548 549 // Get the entry from the constant pool cache, and drop into 550 // the slow path if it has not been resolved 551 ConstantPoolCache* cache = method->constants()->cache(); 552 ConstantPoolCacheEntry* entry = cache->entry_at(index); 553 if (!entry->is_resolved(Bytecodes::_getfield)) { 554 return normal_entry(method, 0, THREAD); 555 } 556 557 // Get the result and push it onto the stack 558 switch (entry->flag_state()) { 559 case ltos: 560 case dtos: 561 stack->overflow_check(1, CHECK_0); 562 stack->alloc(wordSize); 563 break; 564 } 565 if (entry->is_volatile()) { 566 switch (entry->flag_state()) { 567 case ctos: 568 SET_LOCALS_INT(object->char_field_acquire(entry->f2_as_index()), 0); 569 break; 570 571 case btos: 572 case ztos: 573 SET_LOCALS_INT(object->byte_field_acquire(entry->f2_as_index()), 0); 574 break; 575 576 case stos: 577 SET_LOCALS_INT(object->short_field_acquire(entry->f2_as_index()), 0); 578 break; 579 580 case itos: 581 SET_LOCALS_INT(object->int_field_acquire(entry->f2_as_index()), 0); 582 break; 583 584 case ltos: 585 SET_LOCALS_LONG(object->long_field_acquire(entry->f2_as_index()), 0); 586 break; 587 588 case ftos: 589 SET_LOCALS_FLOAT(object->float_field_acquire(entry->f2_as_index()), 0); 590 break; 591 592 case dtos: 593 SET_LOCALS_DOUBLE(object->double_field_acquire(entry->f2_as_index()), 0); 594 break; 595 596 case atos: 597 SET_LOCALS_OBJECT(object->obj_field_acquire(entry->f2_as_index()), 0); 598 break; 599 600 default: 601 ShouldNotReachHere(); 602 } 603 } 604 else { 605 switch (entry->flag_state()) { 606 case ctos: 607 SET_LOCALS_INT(object->char_field(entry->f2_as_index()), 0); 608 break; 609 610 case btos: 611 case ztos: 612 SET_LOCALS_INT(object->byte_field(entry->f2_as_index()), 0); 613 break; 614 615 case stos: 616 SET_LOCALS_INT(object->short_field(entry->f2_as_index()), 0); 617 break; 618 619 case itos: 620 SET_LOCALS_INT(object->int_field(entry->f2_as_index()), 0); 621 break; 622 623 case ltos: 624 SET_LOCALS_LONG(object->long_field(entry->f2_as_index()), 0); 625 break; 626 627 case ftos: 628 SET_LOCALS_FLOAT(object->float_field(entry->f2_as_index()), 0); 629 break; 630 631 case dtos: 632 SET_LOCALS_DOUBLE(object->double_field(entry->f2_as_index()), 0); 633 break; 634 635 case atos: 636 SET_LOCALS_OBJECT(object->obj_field(entry->f2_as_index()), 0); 637 break; 638 639 default: 640 ShouldNotReachHere(); 641 } 642 } 643 644 // No deoptimized frames on the stack 645 return 0; 646 } 647 648 int CppInterpreter::empty_entry(Method* method, intptr_t UNUSED, TRAPS) { 649 JavaThread *thread = (JavaThread *) THREAD; 650 ZeroStack *stack = thread->zero_stack(); 651 652 // Drop into the slow path if we need a safepoint check 653 if (SafepointSynchronize::do_call_back()) { 654 return normal_entry(method, 0, THREAD); 655 } 656 657 // Pop our parameters 658 stack->set_sp(stack->sp() + method->size_of_parameters()); 659 660 // No deoptimized frames on the stack 661 return 0; 662 } 663 664 // The new slots will be inserted before slot insert_before. 665 // Slots < insert_before will have the same slot number after the insert. 666 // Slots >= insert_before will become old_slot + num_slots. 667 void CppInterpreter::insert_vmslots(int insert_before, int num_slots, TRAPS) { 668 JavaThread *thread = (JavaThread *) THREAD; 669 ZeroStack *stack = thread->zero_stack(); 670 671 // Allocate the space 672 stack->overflow_check(num_slots, CHECK); 673 stack->alloc(num_slots * wordSize); 674 intptr_t *vmslots = stack->sp(); 675 676 // Shuffle everything up 677 for (int i = 0; i < insert_before; i++) 678 SET_VMSLOTS_SLOT(VMSLOTS_SLOT(i + num_slots), i); 679 } 680 681 void CppInterpreter::remove_vmslots(int first_slot, int num_slots, TRAPS) { 682 JavaThread *thread = (JavaThread *) THREAD; 683 ZeroStack *stack = thread->zero_stack(); 684 intptr_t *vmslots = stack->sp(); 685 686 // Move everything down 687 for (int i = first_slot - 1; i >= 0; i--) 688 SET_VMSLOTS_SLOT(VMSLOTS_SLOT(i), i + num_slots); 689 690 // Deallocate the space 691 stack->set_sp(stack->sp() + num_slots); 692 } 693 694 BasicType CppInterpreter::result_type_of_handle(oop method_handle) { 695 oop method_type = java_lang_invoke_MethodHandle::type(method_handle); 696 oop return_type = java_lang_invoke_MethodType::rtype(method_type); 697 return java_lang_Class::as_BasicType(return_type, (Klass* *) NULL); 698 } 699 700 intptr_t* CppInterpreter::calculate_unwind_sp(ZeroStack* stack, 701 oop method_handle) { 702 oop method_type = java_lang_invoke_MethodHandle::type(method_handle); 703 int argument_slots = java_lang_invoke_MethodType::ptype_slot_count(method_type); 704 705 return stack->sp() + argument_slots; 706 } 707 708 IRT_ENTRY(void, CppInterpreter::throw_exception(JavaThread* thread, 709 Symbol* name, 710 char* message)) 711 THROW_MSG(name, message); 712 IRT_END 713 714 InterpreterFrame *InterpreterFrame::build(Method* const method, TRAPS) { 715 JavaThread *thread = (JavaThread *) THREAD; 716 ZeroStack *stack = thread->zero_stack(); 717 718 // Calculate the size of the frame we'll build, including 719 // any adjustments to the caller's frame that we'll make. 720 int extra_locals = 0; 721 int monitor_words = 0; 722 int stack_words = 0; 723 724 if (!method->is_native()) { 725 extra_locals = method->max_locals() - method->size_of_parameters(); 726 stack_words = method->max_stack(); 727 } 728 if (method->is_synchronized()) { 729 monitor_words = frame::interpreter_frame_monitor_size(); 730 } 731 stack->overflow_check( 732 extra_locals + header_words + monitor_words + stack_words, CHECK_NULL); 733 734 // Adjust the caller's stack frame to accomodate any additional 735 // local variables we have contiguously with our parameters. 736 for (int i = 0; i < extra_locals; i++) 737 stack->push(0); 738 739 intptr_t *locals; 740 if (method->is_native()) 741 locals = stack->sp() + (method->size_of_parameters() - 1); 742 else 743 locals = stack->sp() + (method->max_locals() - 1); 744 745 stack->push(0); // next_frame, filled in later 746 intptr_t *fp = stack->sp(); 747 assert(fp - stack->sp() == next_frame_off, "should be"); 748 749 stack->push(INTERPRETER_FRAME); 750 assert(fp - stack->sp() == frame_type_off, "should be"); 751 752 interpreterState istate = 753 (interpreterState) stack->alloc(sizeof(BytecodeInterpreter)); 754 assert(fp - stack->sp() == istate_off, "should be"); 755 756 istate->set_locals(locals); 757 istate->set_method(method); 758 istate->set_mirror(method->method_holder()->java_mirror()); 759 istate->set_self_link(istate); 760 istate->set_prev_link(NULL); 761 istate->set_thread(thread); 762 istate->set_bcp(method->is_native() ? NULL : method->code_base()); 763 istate->set_constants(method->constants()->cache()); 764 istate->set_msg(BytecodeInterpreter::method_entry); 765 istate->set_oop_temp(NULL); 766 istate->set_mdx(NULL); 767 istate->set_callee(NULL); 768 769 istate->set_monitor_base((BasicObjectLock *) stack->sp()); 770 if (method->is_synchronized()) { 771 BasicObjectLock *monitor = 772 (BasicObjectLock *) stack->alloc(monitor_words * wordSize); 773 oop object; 774 if (method->is_static()) 775 object = method->constants()->pool_holder()->java_mirror(); 776 else 777 object = (oop) (void*)locals[0]; 778 monitor->set_obj(object); 779 } 780 781 istate->set_stack_base(stack->sp()); 782 istate->set_stack(stack->sp() - 1); 783 if (stack_words) 784 stack->alloc(stack_words * wordSize); 785 istate->set_stack_limit(stack->sp() - 1); 786 787 return (InterpreterFrame *) fp; 788 } 789 790 InterpreterFrame *InterpreterFrame::build(int size, TRAPS) { 791 ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack(); 792 793 int size_in_words = size >> LogBytesPerWord; 794 assert(size_in_words * wordSize == size, "unaligned"); 795 assert(size_in_words >= header_words, "too small"); 796 stack->overflow_check(size_in_words, CHECK_NULL); 797 798 stack->push(0); // next_frame, filled in later 799 intptr_t *fp = stack->sp(); 800 assert(fp - stack->sp() == next_frame_off, "should be"); 801 802 stack->push(INTERPRETER_FRAME); 803 assert(fp - stack->sp() == frame_type_off, "should be"); 804 805 interpreterState istate = 806 (interpreterState) stack->alloc(sizeof(BytecodeInterpreter)); 807 assert(fp - stack->sp() == istate_off, "should be"); 808 istate->set_self_link(NULL); // mark invalid 809 810 stack->alloc((size_in_words - header_words) * wordSize); 811 812 return (InterpreterFrame *) fp; 813 } 814 815 address CppInterpreter::return_entry(TosState state, int length, Bytecodes::Code code) { 816 ShouldNotCallThis(); 817 return NULL; 818 } 819 820 address CppInterpreter::deopt_entry(TosState state, int length) { 821 return NULL; 822 } 823 824 // Helper for figuring out if frames are interpreter frames 825 826 bool CppInterpreter::contains(address pc) { 827 return false; // make frame::print_value_on work 828 } 829 #endif // CC_INTERP