jdk8-mips64-public/hotspot: src/share/vm/ci/ciExceptionHandler.cpp@5eb9169b1a14

7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
Reviewed-by: jrose, never

     1 /*

     2  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.

     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  *

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

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

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "ci/ciExceptionHandler.hpp"

    27 #include "ci/ciUtilities.hpp"

    29 // ciExceptionHandler

    30 //

    31 // This class represents an exception handler for a method.

    33 // ------------------------------------------------------------------

    34 // ciExceptionHandler::catch_klass

    35 //

    36 // Get the exception klass that this handler catches.

    37 ciInstanceKlass* ciExceptionHandler::catch_klass() {

    38   VM_ENTRY_MARK;

    39   assert(!is_catch_all(), "bad index");

    40   if (_catch_klass == NULL) {

    41     bool will_link;

    42     assert(_loading_klass->get_instanceKlass()->is_linked(), "must be linked before accessing constant pool");

    43     constantPoolHandle cpool(_loading_klass->get_instanceKlass()->constants());

    44     ciKlass* k = CURRENT_ENV->get_klass_by_index(cpool,

    45                                                  _catch_klass_index,

    46                                                  will_link,

    47                                                  _loading_klass);

    48     if (!will_link && k->is_loaded()) {

    49       GUARDED_VM_ENTRY(

    50         k = CURRENT_ENV->get_unloaded_klass(_loading_klass, k->name());

    51       )

    52     }

    53     _catch_klass = k->as_instance_klass();

    54   }

    55   return _catch_klass;

    56 }

    58 // ------------------------------------------------------------------

    59 // ciExceptionHandler::print()

    60 void ciExceptionHandler::print() {

    61   tty->print("<ciExceptionHandler start=%d limit=%d"

    62              " handler_bci=%d ex_klass_index=%d",

    63              start(), limit(), handler_bci(), catch_klass_index());

    64   if (_catch_klass != NULL) {

    65     tty->print(" ex_klass=");

    66     _catch_klass->print();

    67   }

    68   tty->print(">");

    69 }

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