1 /* 2 * Copyright (c) 2003, 2018, 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.inline.hpp" 44 #include "runtime/jniHandles.inline.hpp" 45 #include "runtime/orderAccess.inline.hpp" 46 #include "runtime/sharedRuntime.hpp" 47 #include "runtime/stubRoutines.hpp" 48 #include "runtime/synchronizer.hpp" 49 #include "runtime/timer.hpp" 50 #include "runtime/vframeArray.hpp" 51 #include "stack_zero.inline.hpp" 52 #include "utilities/debug.hpp" 53 #include "utilities/macros.hpp" 54 55 #ifdef CC_INTERP 56 57 #define fixup_after_potential_safepoint() \ 58 method = istate->method() 59 60 #define CALL_VM_NOCHECK_NOFIX(func) \ 61 thread->set_last_Java_frame(); \ 62 func; \ 63 thread->reset_last_Java_frame(); 64 65 #define CALL_VM_NOCHECK(func) \ 66 CALL_VM_NOCHECK_NOFIX(func) \ 67 fixup_after_potential_safepoint() 68 69 int CppInterpreter::normal_entry(Method* method, intptr_t UNUSED, TRAPS) { 70 JavaThread *thread = (JavaThread *) THREAD; 71 72 // Allocate and initialize our frame. 73 InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0); 74 thread->push_zero_frame(frame); 75 76 // Execute those bytecodes! 77 main_loop(0, THREAD); 78 79 // No deoptimized frames on the stack 80 return 0; 81 } 82 83 intptr_t narrow(BasicType type, intptr_t result) { 84 // mask integer result to narrower return type. 85 switch (type) { 86 case T_BOOLEAN: 87 return result&1; 88 case T_BYTE: 89 return (intptr_t)(jbyte)result; 90 case T_CHAR: 91 return (intptr_t)(uintptr_t)(jchar)result; 92 case T_SHORT: 93 return (intptr_t)(jshort)result; 94 case T_OBJECT: // nothing to do fall through 95 case T_ARRAY: 96 case T_LONG: 97 case T_INT: 98 case T_FLOAT: 99 case T_DOUBLE: 100 case T_VOID: 101 return result; 102 default : ShouldNotReachHere(); 103 } 104 } 105 106 107 void CppInterpreter::main_loop(int recurse, TRAPS) { 108 JavaThread *thread = (JavaThread *) THREAD; 109 ZeroStack *stack = thread->zero_stack(); 110 111 // If we are entering from a deopt we may need to call 112 // ourself a few times in order to get to our frame. 113 if (recurse) 114 main_loop(recurse - 1, THREAD); 115 116 InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame(); 117 interpreterState istate = frame->interpreter_state(); 118 Method* method = istate->method(); 119 120 intptr_t *result = NULL; 121 int result_slots = 0; 122 123 while (true) { 124 // We can set up the frame anchor with everything we want at 125 // this point as we are thread_in_Java and no safepoints can 126 // occur until we go to vm mode. We do have to clear flags 127 // on return from vm but that is it. 128 thread->set_last_Java_frame(); 129 130 // Call the interpreter 131 if (JvmtiExport::can_post_interpreter_events()) 132 BytecodeInterpreter::runWithChecks(istate); 133 else 134 BytecodeInterpreter::run(istate); 135 fixup_after_potential_safepoint(); 136 137 // Clear the frame anchor 138 thread->reset_last_Java_frame(); 139 140 // Examine the message from the interpreter to decide what to do 141 if (istate->msg() == BytecodeInterpreter::call_method) { 142 Method* callee = istate->callee(); 143 144 // Trim back the stack to put the parameters at the top 145 stack->set_sp(istate->stack() + 1); 146 147 // Make the call 148 Interpreter::invoke_method(callee, istate->callee_entry_point(), THREAD); 149 fixup_after_potential_safepoint(); 150 151 // Convert the result 152 istate->set_stack(stack->sp() - 1); 153 154 // Restore the stack 155 stack->set_sp(istate->stack_limit() + 1); 156 157 // Resume the interpreter 158 istate->set_msg(BytecodeInterpreter::method_resume); 159 } 160 else if (istate->msg() == BytecodeInterpreter::more_monitors) { 161 int monitor_words = frame::interpreter_frame_monitor_size(); 162 163 // Allocate the space 164 stack->overflow_check(monitor_words, THREAD); 165 if (HAS_PENDING_EXCEPTION) 166 break; 167 stack->alloc(monitor_words * wordSize); 168 169 // Move the expression stack contents 170 for (intptr_t *p = istate->stack() + 1; p < istate->stack_base(); p++) 171 *(p - monitor_words) = *p; 172 173 // Move the expression stack pointers 174 istate->set_stack_limit(istate->stack_limit() - monitor_words); 175 istate->set_stack(istate->stack() - monitor_words); 176 istate->set_stack_base(istate->stack_base() - monitor_words); 177 178 // Zero the new monitor so the interpreter can find it. 179 ((BasicObjectLock *) istate->stack_base())->set_obj(NULL); 180 181 // Resume the interpreter 182 istate->set_msg(BytecodeInterpreter::got_monitors); 183 } 184 else if (istate->msg() == BytecodeInterpreter::return_from_method) { 185 // Copy the result into the caller's frame 186 result_slots = type2size[method->result_type()]; 187 assert(result_slots >= 0 && result_slots <= 2, "what?"); 188 result = istate->stack() + result_slots; 189 break; 190 } 191 else if (istate->msg() == BytecodeInterpreter::throwing_exception) { 192 assert(HAS_PENDING_EXCEPTION, "should do"); 193 break; 194 } 195 else if (istate->msg() == BytecodeInterpreter::do_osr) { 196 // Unwind the current frame 197 thread->pop_zero_frame(); 198 199 // Remove any extension of the previous frame 200 int extra_locals = method->max_locals() - method->size_of_parameters(); 201 stack->set_sp(stack->sp() + extra_locals); 202 203 // Jump into the OSR method 204 Interpreter::invoke_osr( 205 method, istate->osr_entry(), istate->osr_buf(), THREAD); 206 return; 207 } 208 else { 209 ShouldNotReachHere(); 210 } 211 } 212 213 // Unwind the current frame 214 thread->pop_zero_frame(); 215 216 // Pop our local variables 217 stack->set_sp(stack->sp() + method->max_locals()); 218 219 // Push our result 220 for (int i = 0; i < result_slots; i++) { 221 // Adjust result to smaller 222 union { 223 intptr_t res; 224 jint res_jint; 225 }; 226 res = result[-i]; 227 if (result_slots == 1) { 228 BasicType t = method->result_type(); 229 if (is_subword_type(t)) { 230 res_jint = (jint)narrow(t, res_jint); 231 } 232 } 233 stack->push(res); 234 } 235 } 236 237 int CppInterpreter::native_entry(Method* method, intptr_t UNUSED, TRAPS) { 238 // Make sure method is native and not abstract 239 assert(method->is_native() && !method->is_abstract(), "should be"); 240 241 JavaThread *thread = (JavaThread *) THREAD; 242 ZeroStack *stack = thread->zero_stack(); 243 244 // Allocate and initialize our frame 245 InterpreterFrame *frame = InterpreterFrame::build(method, CHECK_0); 246 thread->push_zero_frame(frame); 247 interpreterState istate = frame->interpreter_state(); 248 intptr_t *locals = istate->locals(); 249 250 // Update the invocation counter 251 if ((UseCompiler || CountCompiledCalls) && !method->is_synchronized()) { 252 MethodCounters* mcs = method->method_counters(); 253 if (mcs == NULL) { 254 CALL_VM_NOCHECK(mcs = InterpreterRuntime::build_method_counters(thread, method)); 255 if (HAS_PENDING_EXCEPTION) 256 goto unwind_and_return; 257 } 258 InvocationCounter *counter = mcs->invocation_counter(); 259 counter->increment(); 260 if (counter->reached_InvocationLimit(mcs->backedge_counter())) { 261 CALL_VM_NOCHECK( 262 InterpreterRuntime::frequency_counter_overflow(thread, NULL)); 263 if (HAS_PENDING_EXCEPTION) 264 goto unwind_and_return; 265 } 266 } 267 268 // Lock if necessary 269 BasicObjectLock *monitor; 270 monitor = NULL; 271 if (method->is_synchronized()) { 272 monitor = (BasicObjectLock*) istate->stack_base(); 273 oop lockee = monitor->obj(); 274 markOop disp = lockee->mark()->set_unlocked(); 275 276 monitor->lock()->set_displaced_header(disp); 277 if (Atomic::cmpxchg((markOop)monitor, lockee->mark_addr(), disp) != disp) { 278 if (thread->is_lock_owned((address) disp->clear_lock_bits())) { 279 monitor->lock()->set_displaced_header(NULL); 280 } 281 else { 282 CALL_VM_NOCHECK(InterpreterRuntime::monitorenter(thread, monitor)); 283 if (HAS_PENDING_EXCEPTION) 284 goto unwind_and_return; 285 } 286 } 287 } 288 289 // Get the signature handler 290 InterpreterRuntime::SignatureHandler *handler; { 291 address handlerAddr = method->signature_handler(); 292 if (handlerAddr == NULL) { 293 CALL_VM_NOCHECK(InterpreterRuntime::prepare_native_call(thread, method)); 294 if (HAS_PENDING_EXCEPTION) 295 goto unlock_unwind_and_return; 296 297 handlerAddr = method->signature_handler(); 298 assert(handlerAddr != NULL, "eh?"); 299 } 300 if (handlerAddr == (address) InterpreterRuntime::slow_signature_handler) { 301 CALL_VM_NOCHECK(handlerAddr = 302 InterpreterRuntime::slow_signature_handler(thread, method, NULL,NULL)); 303 if (HAS_PENDING_EXCEPTION) 304 goto unlock_unwind_and_return; 305 } 306 handler = \ 307 InterpreterRuntime::SignatureHandler::from_handlerAddr(handlerAddr); 308 } 309 310 // Get the native function entry point 311 address function; 312 function = method->native_function(); 313 assert(function != NULL, "should be set if signature handler is"); 314 315 // Build the argument list 316 stack->overflow_check(handler->argument_count() * 2, THREAD); 317 if (HAS_PENDING_EXCEPTION) 318 goto unlock_unwind_and_return; 319 320 void **arguments; 321 void *mirror; { 322 arguments = 323 (void **) stack->alloc(handler->argument_count() * sizeof(void **)); 324 void **dst = arguments; 325 326 void *env = thread->jni_environment(); 327 *(dst++) = &env; 328 329 if (method->is_static()) { 330 istate->set_oop_temp( 331 method->constants()->pool_holder()->java_mirror()); 332 mirror = istate->oop_temp_addr(); 333 *(dst++) = &mirror; 334 } 335 336 intptr_t *src = locals; 337 for (int i = dst - arguments; i < handler->argument_count(); i++) { 338 ffi_type *type = handler->argument_type(i); 339 if (type == &ffi_type_pointer) { 340 if (*src) { 341 stack->push((intptr_t) src); 342 *(dst++) = stack->sp(); 343 } 344 else { 345 *(dst++) = src; 346 } 347 src--; 348 } 349 else if (type->size == 4) { 350 *(dst++) = src--; 351 } 352 else if (type->size == 8) { 353 src--; 354 *(dst++) = src--; 355 } 356 else { 357 ShouldNotReachHere(); 358 } 359 } 360 } 361 362 // Set up the Java frame anchor 363 thread->set_last_Java_frame(); 364 365 // Change the thread state to _thread_in_native 366 ThreadStateTransition::transition_from_java(thread, _thread_in_native); 367 368 // Make the call 369 intptr_t result[4 - LogBytesPerWord]; 370 ffi_call(handler->cif(), (void (*)()) function, result, arguments); 371 372 // Change the thread state back to _thread_in_Java. 373 // ThreadStateTransition::transition_from_native() cannot be used 374 // here because it does not check for asynchronous exceptions. 375 // We have to manage the transition ourself. 376 thread->set_thread_state(_thread_in_native_trans); 377 378 // Make sure new state is visible in the GC thread 379 InterfaceSupport::serialize_thread_state(thread); 380 381 // Handle safepoint operations, pending suspend requests, 382 // and pending asynchronous exceptions. 383 if (SafepointMechanism::poll(thread) || 384 thread->has_special_condition_for_native_trans()) { 385 JavaThread::check_special_condition_for_native_trans(thread); 386 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops()); 387 } 388 389 // Finally we can change the thread state to _thread_in_Java. 390 thread->set_thread_state(_thread_in_Java); 391 fixup_after_potential_safepoint(); 392 393 // Clear the frame anchor 394 thread->reset_last_Java_frame(); 395 396 // If the result was an oop then unbox it and store it in 397 // oop_temp where the garbage collector can see it before 398 // we release the handle it might be protected by. 399 if (handler->result_type() == &ffi_type_pointer) { 400 if (result[0] == 0) { 401 istate->set_oop_temp(NULL); 402 } else { 403 jobject handle = reinterpret_cast<jobject>(result[0]); 404 istate->set_oop_temp(JNIHandles::resolve(handle)); 405 } 406 } 407 408 // Reset handle block 409 thread->active_handles()->clear(); 410 411 unlock_unwind_and_return: 412 413 // Unlock if necessary 414 if (monitor) { 415 BasicLock *lock = monitor->lock(); 416 markOop header = lock->displaced_header(); 417 oop rcvr = monitor->obj(); 418 monitor->set_obj(NULL); 419 420 if (header != NULL) { 421 markOop old_header = markOopDesc::encode(lock); 422 if (rcvr->cas_set_mark(header, old_header) != old_header) { 423 monitor->set_obj(rcvr); { 424 HandleMark hm(thread); 425 CALL_VM_NOCHECK(InterpreterRuntime::monitorexit(thread, monitor)); 426 } 427 } 428 } 429 } 430 431 unwind_and_return: 432 433 // Unwind the current activation 434 thread->pop_zero_frame(); 435 436 // Pop our parameters 437 stack->set_sp(stack->sp() + method->size_of_parameters()); 438 439 // Push our result 440 if (!HAS_PENDING_EXCEPTION) { 441 BasicType type = method->result_type(); 442 stack->set_sp(stack->sp() - type2size[type]); 443 444 switch (type) { 445 case T_VOID: 446 break; 447 448 case T_BOOLEAN: 449 #ifndef VM_LITTLE_ENDIAN 450 result[0] <<= (BitsPerWord - BitsPerByte); 451 #endif 452 SET_LOCALS_INT(*(jboolean *) result != 0, 0); 453 break; 454 455 case T_CHAR: 456 #ifndef VM_LITTLE_ENDIAN 457 result[0] <<= (BitsPerWord - BitsPerShort); 458 #endif 459 SET_LOCALS_INT(*(jchar *) result, 0); 460 break; 461 462 case T_BYTE: 463 #ifndef VM_LITTLE_ENDIAN 464 result[0] <<= (BitsPerWord - BitsPerByte); 465 #endif 466 SET_LOCALS_INT(*(jbyte *) result, 0); 467 break; 468 469 case T_SHORT: 470 #ifndef VM_LITTLE_ENDIAN 471 result[0] <<= (BitsPerWord - BitsPerShort); 472 #endif 473 SET_LOCALS_INT(*(jshort *) result, 0); 474 break; 475 476 case T_INT: 477 #ifndef VM_LITTLE_ENDIAN 478 result[0] <<= (BitsPerWord - BitsPerInt); 479 #endif 480 SET_LOCALS_INT(*(jint *) result, 0); 481 break; 482 483 case T_LONG: 484 SET_LOCALS_LONG(*(jlong *) result, 0); 485 break; 486 487 case T_FLOAT: 488 SET_LOCALS_FLOAT(*(jfloat *) result, 0); 489 break; 490 491 case T_DOUBLE: 492 SET_LOCALS_DOUBLE(*(jdouble *) result, 0); 493 break; 494 495 case T_OBJECT: 496 case T_ARRAY: 497 SET_LOCALS_OBJECT(istate->oop_temp(), 0); 498 break; 499 500 default: 501 ShouldNotReachHere(); 502 } 503 } 504 505 // No deoptimized frames on the stack 506 return 0; 507 } 508 509 int CppInterpreter::accessor_entry(Method* method, intptr_t UNUSED, TRAPS) { 510 JavaThread *thread = (JavaThread *) THREAD; 511 ZeroStack *stack = thread->zero_stack(); 512 intptr_t *locals = stack->sp(); 513 514 // Drop into the slow path if we need a safepoint check 515 if (SafepointMechanism::poll(THREAD)) { 516 return normal_entry(method, 0, THREAD); 517 } 518 519 // Load the object pointer and drop into the slow path 520 // if we have a NullPointerException 521 oop object = LOCALS_OBJECT(0); 522 if (object == NULL) { 523 return normal_entry(method, 0, THREAD); 524 } 525 526 // Read the field index from the bytecode, which looks like this: 527 // 0: aload_0 528 // 1: getfield 529 // 2: index 530 // 3: index 531 // 4: ireturn/areturn/freturn/lreturn/dreturn 532 // NB this is not raw bytecode: index is in machine order 533 u1 *code = method->code_base(); 534 assert(code[0] == Bytecodes::_aload_0 && 535 code[1] == Bytecodes::_getfield && 536 (code[4] == Bytecodes::_ireturn || 537 code[4] == Bytecodes::_freturn || 538 code[4] == Bytecodes::_lreturn || 539 code[4] == Bytecodes::_dreturn || 540 code[4] == Bytecodes::_areturn), "should do"); 541 u2 index = Bytes::get_native_u2(&code[2]); 542 543 // Get the entry from the constant pool cache, and drop into 544 // the slow path if it has not been resolved 545 ConstantPoolCache* cache = method->constants()->cache(); 546 ConstantPoolCacheEntry* entry = cache->entry_at(index); 547 if (!entry->is_resolved(Bytecodes::_getfield)) { 548 return normal_entry(method, 0, THREAD); 549 } 550 551 // Get the result and push it onto the stack 552 switch (entry->flag_state()) { 553 case ltos: 554 case dtos: 555 stack->overflow_check(1, CHECK_0); 556 stack->alloc(wordSize); 557 break; 558 } 559 if (entry->is_volatile()) { 560 switch (entry->flag_state()) { 561 case ctos: 562 SET_LOCALS_INT(object->char_field_acquire(entry->f2_as_index()), 0); 563 break; 564 565 case btos: 566 case ztos: 567 SET_LOCALS_INT(object->byte_field_acquire(entry->f2_as_index()), 0); 568 break; 569 570 case stos: 571 SET_LOCALS_INT(object->short_field_acquire(entry->f2_as_index()), 0); 572 break; 573 574 case itos: 575 SET_LOCALS_INT(object->int_field_acquire(entry->f2_as_index()), 0); 576 break; 577 578 case ltos: 579 SET_LOCALS_LONG(object->long_field_acquire(entry->f2_as_index()), 0); 580 break; 581 582 case ftos: 583 SET_LOCALS_FLOAT(object->float_field_acquire(entry->f2_as_index()), 0); 584 break; 585 586 case dtos: 587 SET_LOCALS_DOUBLE(object->double_field_acquire(entry->f2_as_index()), 0); 588 break; 589 590 case atos: 591 SET_LOCALS_OBJECT(object->obj_field_acquire(entry->f2_as_index()), 0); 592 break; 593 594 default: 595 ShouldNotReachHere(); 596 } 597 } 598 else { 599 switch (entry->flag_state()) { 600 case ctos: 601 SET_LOCALS_INT(object->char_field(entry->f2_as_index()), 0); 602 break; 603 604 case btos: 605 case ztos: 606 SET_LOCALS_INT(object->byte_field(entry->f2_as_index()), 0); 607 break; 608 609 case stos: 610 SET_LOCALS_INT(object->short_field(entry->f2_as_index()), 0); 611 break; 612 613 case itos: 614 SET_LOCALS_INT(object->int_field(entry->f2_as_index()), 0); 615 break; 616 617 case ltos: 618 SET_LOCALS_LONG(object->long_field(entry->f2_as_index()), 0); 619 break; 620 621 case ftos: 622 SET_LOCALS_FLOAT(object->float_field(entry->f2_as_index()), 0); 623 break; 624 625 case dtos: 626 SET_LOCALS_DOUBLE(object->double_field(entry->f2_as_index()), 0); 627 break; 628 629 case atos: 630 SET_LOCALS_OBJECT(object->obj_field(entry->f2_as_index()), 0); 631 break; 632 633 default: 634 ShouldNotReachHere(); 635 } 636 } 637 638 // No deoptimized frames on the stack 639 return 0; 640 } 641 642 int CppInterpreter::empty_entry(Method* method, intptr_t UNUSED, TRAPS) { 643 JavaThread *thread = (JavaThread *) THREAD; 644 ZeroStack *stack = thread->zero_stack(); 645 646 // Drop into the slow path if we need a safepoint check 647 if (SafepointMechanism::poll(THREAD)) { 648 return normal_entry(method, 0, THREAD); 649 } 650 651 // Pop our parameters 652 stack->set_sp(stack->sp() + method->size_of_parameters()); 653 654 // No deoptimized frames on the stack 655 return 0; 656 } 657 658 // The new slots will be inserted before slot insert_before. 659 // Slots < insert_before will have the same slot number after the insert. 660 // Slots >= insert_before will become old_slot + num_slots. 661 void CppInterpreter::insert_vmslots(int insert_before, int num_slots, TRAPS) { 662 JavaThread *thread = (JavaThread *) THREAD; 663 ZeroStack *stack = thread->zero_stack(); 664 665 // Allocate the space 666 stack->overflow_check(num_slots, CHECK); 667 stack->alloc(num_slots * wordSize); 668 intptr_t *vmslots = stack->sp(); 669 670 // Shuffle everything up 671 for (int i = 0; i < insert_before; i++) 672 SET_VMSLOTS_SLOT(VMSLOTS_SLOT(i + num_slots), i); 673 } 674 675 void CppInterpreter::remove_vmslots(int first_slot, int num_slots, TRAPS) { 676 JavaThread *thread = (JavaThread *) THREAD; 677 ZeroStack *stack = thread->zero_stack(); 678 intptr_t *vmslots = stack->sp(); 679 680 // Move everything down 681 for (int i = first_slot - 1; i >= 0; i--) 682 SET_VMSLOTS_SLOT(VMSLOTS_SLOT(i), i + num_slots); 683 684 // Deallocate the space 685 stack->set_sp(stack->sp() + num_slots); 686 } 687 688 BasicType CppInterpreter::result_type_of_handle(oop method_handle) { 689 oop method_type = java_lang_invoke_MethodHandle::type(method_handle); 690 oop return_type = java_lang_invoke_MethodType::rtype(method_type); 691 return java_lang_Class::as_BasicType(return_type, (Klass* *) NULL); 692 } 693 694 intptr_t* CppInterpreter::calculate_unwind_sp(ZeroStack* stack, 695 oop method_handle) { 696 oop method_type = java_lang_invoke_MethodHandle::type(method_handle); 697 int argument_slots = java_lang_invoke_MethodType::ptype_slot_count(method_type); 698 699 return stack->sp() + argument_slots; 700 } 701 702 IRT_ENTRY(void, CppInterpreter::throw_exception(JavaThread* thread, 703 Symbol* name, 704 char* message)) 705 THROW_MSG(name, message); 706 IRT_END 707 708 InterpreterFrame *InterpreterFrame::build(Method* const method, TRAPS) { 709 JavaThread *thread = (JavaThread *) THREAD; 710 ZeroStack *stack = thread->zero_stack(); 711 712 // Calculate the size of the frame we'll build, including 713 // any adjustments to the caller's frame that we'll make. 714 int extra_locals = 0; 715 int monitor_words = 0; 716 int stack_words = 0; 717 718 if (!method->is_native()) { 719 extra_locals = method->max_locals() - method->size_of_parameters(); 720 stack_words = method->max_stack(); 721 } 722 if (method->is_synchronized()) { 723 monitor_words = frame::interpreter_frame_monitor_size(); 724 } 725 stack->overflow_check( 726 extra_locals + header_words + monitor_words + stack_words, CHECK_NULL); 727 728 // Adjust the caller's stack frame to accomodate any additional 729 // local variables we have contiguously with our parameters. 730 for (int i = 0; i < extra_locals; i++) 731 stack->push(0); 732 733 intptr_t *locals; 734 if (method->is_native()) 735 locals = stack->sp() + (method->size_of_parameters() - 1); 736 else 737 locals = stack->sp() + (method->max_locals() - 1); 738 739 stack->push(0); // next_frame, filled in later 740 intptr_t *fp = stack->sp(); 741 assert(fp - stack->sp() == next_frame_off, "should be"); 742 743 stack->push(INTERPRETER_FRAME); 744 assert(fp - stack->sp() == frame_type_off, "should be"); 745 746 interpreterState istate = 747 (interpreterState) stack->alloc(sizeof(BytecodeInterpreter)); 748 assert(fp - stack->sp() == istate_off, "should be"); 749 750 istate->set_locals(locals); 751 istate->set_method(method); 752 istate->set_mirror(method->method_holder()->java_mirror()); 753 istate->set_self_link(istate); 754 istate->set_prev_link(NULL); 755 istate->set_thread(thread); 756 istate->set_bcp(method->is_native() ? NULL : method->code_base()); 757 istate->set_constants(method->constants()->cache()); 758 istate->set_msg(BytecodeInterpreter::method_entry); 759 istate->set_oop_temp(NULL); 760 istate->set_mdx(NULL); 761 istate->set_callee(NULL); 762 763 istate->set_monitor_base((BasicObjectLock *) stack->sp()); 764 if (method->is_synchronized()) { 765 BasicObjectLock *monitor = 766 (BasicObjectLock *) stack->alloc(monitor_words * wordSize); 767 oop object; 768 if (method->is_static()) 769 object = method->constants()->pool_holder()->java_mirror(); 770 else 771 object = (oop) (void*)locals[0]; 772 monitor->set_obj(object); 773 } 774 775 istate->set_stack_base(stack->sp()); 776 istate->set_stack(stack->sp() - 1); 777 if (stack_words) 778 stack->alloc(stack_words * wordSize); 779 istate->set_stack_limit(stack->sp() - 1); 780 781 return (InterpreterFrame *) fp; 782 } 783 784 InterpreterFrame *InterpreterFrame::build(int size, TRAPS) { 785 ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack(); 786 787 int size_in_words = size >> LogBytesPerWord; 788 assert(size_in_words * wordSize == size, "unaligned"); 789 assert(size_in_words >= header_words, "too small"); 790 stack->overflow_check(size_in_words, CHECK_NULL); 791 792 stack->push(0); // next_frame, filled in later 793 intptr_t *fp = stack->sp(); 794 assert(fp - stack->sp() == next_frame_off, "should be"); 795 796 stack->push(INTERPRETER_FRAME); 797 assert(fp - stack->sp() == frame_type_off, "should be"); 798 799 interpreterState istate = 800 (interpreterState) stack->alloc(sizeof(BytecodeInterpreter)); 801 assert(fp - stack->sp() == istate_off, "should be"); 802 istate->set_self_link(NULL); // mark invalid 803 804 stack->alloc((size_in_words - header_words) * wordSize); 805 806 return (InterpreterFrame *) fp; 807 } 808 809 address CppInterpreter::return_entry(TosState state, int length, Bytecodes::Code code) { 810 ShouldNotCallThis(); 811 return NULL; 812 } 813 814 address CppInterpreter::deopt_entry(TosState state, int length) { 815 return NULL; 816 } 817 818 // Helper for figuring out if frames are interpreter frames 819 820 bool CppInterpreter::contains(address pc) { 821 return false; // make frame::print_value_on work 822 } 823 #endif // CC_INTERP