Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.

  * Copyright 2008, 2009, 2010 Red Hat, Inc.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  *

  */

 #include "incls/_precompiled.incl"

 #include "incls/_sharkRuntime.cpp.incl"

 using namespace llvm;

 JRT_ENTRY(int, SharkRuntime::find_exception_handler(JavaThread* thread,

                                                     int*        indexes,

                                                     int         num_indexes))

   constantPoolHandle pool(thread, method(thread)->constants());

   KlassHandle exc_klass(thread, ((oop) tos_at(thread, 0))->klass());

   for (int i = 0; i < num_indexes; i++) {

     klassOop tmp = pool->klass_at(indexes[i], CHECK_0);

     KlassHandle chk_klass(thread, tmp);

     if (exc_klass() == chk_klass())

       return i;

     if (exc_klass()->klass_part()->is_subtype_of(chk_klass()))

       return i;

   }

   return -1;

 JRT_END

 JRT_ENTRY(void, SharkRuntime::monitorenter(JavaThread*      thread,

                                            BasicObjectLock* lock))

   if (PrintBiasedLockingStatistics)

     Atomic::inc(BiasedLocking::slow_path_entry_count_addr());

   Handle object(thread, lock->obj());

   assert(Universe::heap()->is_in_reserved_or_null(object()), "should be");

   if (UseBiasedLocking) {

     // Retry fast entry if bias is revoked to avoid unnecessary inflation

     ObjectSynchronizer::fast_enter(object, lock->lock(), true, CHECK);

   } else {

     ObjectSynchronizer::slow_enter(object, lock->lock(), CHECK);

   }

   assert(Universe::heap()->is_in_reserved_or_null(lock->obj()), "should be");

 JRT_END

 JRT_ENTRY(void, SharkRuntime::monitorexit(JavaThread*      thread,

                                           BasicObjectLock* lock))

   Handle object(thread, lock->obj());

   assert(Universe::heap()->is_in_reserved_or_null(object()), "should be");

   if (lock == NULL || object()->is_unlocked()) {

     THROW(vmSymbols::java_lang_IllegalMonitorStateException());

   }

   ObjectSynchronizer::slow_exit(object(), lock->lock(), thread);

 JRT_END

 JRT_ENTRY(void, SharkRuntime::new_instance(JavaThread* thread, int index))

   klassOop k_oop = method(thread)->constants()->klass_at(index, CHECK);

   instanceKlassHandle klass(THREAD, k_oop);

   // Make sure we are not instantiating an abstract klass

   klass->check_valid_for_instantiation(true, CHECK);

   // Make sure klass is initialized

   klass->initialize(CHECK);

   // At this point the class may not be fully initialized

   // because of recursive initialization. If it is fully

   // initialized & has_finalized is not set, we rewrite

   // it into its fast version (Note: no locking is needed

   // here since this is an atomic byte write and can be

   // done more than once).

   //

   // Note: In case of classes with has_finalized we don't

   //       rewrite since that saves us an extra check in

   //       the fast version which then would call the

   //       slow version anyway (and do a call back into

   //       Java).

   //       If we have a breakpoint, then we don't rewrite

   //       because the _breakpoint bytecode would be lost.

   oop obj = klass->allocate_instance(CHECK);

   thread->set_vm_result(obj);

 JRT_END

 JRT_ENTRY(void, SharkRuntime::newarray(JavaThread* thread,

                                        BasicType   type,

                                        int         size))

   oop obj = oopFactory::new_typeArray(type, size, CHECK);

   thread->set_vm_result(obj);

 JRT_END

 JRT_ENTRY(void, SharkRuntime::anewarray(JavaThread* thread,

                                         int         index,

                                         int         size))

   klassOop klass = method(thread)->constants()->klass_at(index, CHECK);

   objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK);

   thread->set_vm_result(obj);

 JRT_END

 JRT_ENTRY(void, SharkRuntime::multianewarray(JavaThread* thread,

                                              int         index,

                                              int         ndims,

                                              int*        dims))

   klassOop klass = method(thread)->constants()->klass_at(index, CHECK);

   oop obj = arrayKlass::cast(klass)->multi_allocate(ndims, dims, CHECK);

   thread->set_vm_result(obj);

 JRT_END

 JRT_ENTRY(void, SharkRuntime::register_finalizer(JavaThread* thread,

                                                  oop         object))

   assert(object->is_oop(), "should be");

   assert(object->klass()->klass_part()->has_finalizer(), "should have");

   instanceKlass::register_finalizer(instanceOop(object), CHECK);

 JRT_END

 JRT_ENTRY(void, SharkRuntime::throw_ArithmeticException(JavaThread* thread,

                                                         const char* file,

                                                         int         line))

   Exceptions::_throw_msg(

     thread, file, line,

     vmSymbols::java_lang_ArithmeticException(),

     "");

 JRT_END

 JRT_ENTRY(void, SharkRuntime::throw_ArrayIndexOutOfBoundsException(

                                                      JavaThread* thread,

                                                      const char* file,

                                                      int         line,

                                                      int         index))

   char msg[jintAsStringSize];

   snprintf(msg, sizeof(msg), "%d", index);

   Exceptions::_throw_msg(

     thread, file, line,

     vmSymbols::java_lang_ArrayIndexOutOfBoundsException(),

     msg);

 JRT_END

 JRT_ENTRY(void, SharkRuntime::throw_ClassCastException(JavaThread* thread,

                                                        const char* file,

                                                        int         line))

   Exceptions::_throw_msg(

     thread, file, line,

     vmSymbols::java_lang_ClassCastException(),

     "");

 JRT_END

 JRT_ENTRY(void, SharkRuntime::throw_NullPointerException(JavaThread* thread,

                                                          const char* file,

                                                          int         line))

   Exceptions::_throw_msg(

     thread, file, line,

     vmSymbols::java_lang_NullPointerException(),

     "");

 JRT_END

 // Non-VM calls

 // Nothing in these must ever GC!

 void SharkRuntime::dump(const char *name, intptr_t value) {

   oop valueOop = (oop) value;

   tty->print("%s = ", name);

   if (valueOop->is_oop(true))

     valueOop->print_on(tty);

   else if (value >= ' ' && value <= '~')

     tty->print("'%c' (%d)", value, value);

   else

     tty->print("%p", value);

   tty->print_cr("");

 }

 bool SharkRuntime::is_subtype_of(klassOop check_klass, klassOop object_klass) {

   return object_klass->klass_part()->is_subtype_of(check_klass);

 }

 int SharkRuntime::uncommon_trap(JavaThread* thread, int trap_request) {

   Thread *THREAD = thread;

   // In C2, uncommon_trap_blob creates a frame, so all the various

   // deoptimization functions expect to find the frame of the method

   // being deopted one frame down on the stack.  We create a dummy

   // frame to mirror this.

   FakeStubFrame *stubframe = FakeStubFrame::build(CHECK_0);

   thread->push_zero_frame(stubframe);

   // Initiate the trap

   thread->set_last_Java_frame();

   Deoptimization::UnrollBlock *urb =

     Deoptimization::uncommon_trap(thread, trap_request);

   thread->reset_last_Java_frame();

   // Pop our dummy frame and the frame being deoptimized

   thread->pop_zero_frame();

   thread->pop_zero_frame();

   // Push skeleton frames

   int number_of_frames = urb->number_of_frames();

   for (int i = 0; i < number_of_frames; i++) {

     intptr_t size = urb->frame_sizes()[i];

     InterpreterFrame *frame = InterpreterFrame::build(size, CHECK_0);

     thread->push_zero_frame(frame);

   }

   // Push another dummy frame

   stubframe = FakeStubFrame::build(CHECK_0);

   thread->push_zero_frame(stubframe);

   // Fill in the skeleton frames

   thread->set_last_Java_frame();

   Deoptimization::unpack_frames(thread, Deoptimization::Unpack_uncommon_trap);

   thread->reset_last_Java_frame();

   // Pop our dummy frame

   thread->pop_zero_frame();

   // Fall back into the interpreter

   return number_of_frames;

 }

 FakeStubFrame* FakeStubFrame::build(TRAPS) {

   ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack();

   stack->overflow_check(header_words, CHECK_NULL);

   stack->push(0); // next_frame, filled in later

   intptr_t *fp = stack->sp();

   assert(fp - stack->sp() == next_frame_off, "should be");

   stack->push(FAKE_STUB_FRAME);

   assert(fp - stack->sp() == frame_type_off, "should be");

   return (FakeStubFrame *) fp;

 }