jdk8-mips64-public/hotspot: src/share/vm/ci/ciCPCache.cpp@8012aa3ccede

4926272: methodOopDesc::method_from_bcp is unsafe
Reviewed-by: coleenp, jrose, kvn, dcubed

     1 /*

     2  * Copyright (c) 2009, 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/ciCPCache.hpp"

    27 #include "ci/ciUtilities.hpp"

    28 #include "oops/cpCacheOop.hpp"

    30 // ciCPCache

    32 // ------------------------------------------------------------------

    33 // ciCPCache::get_f1_offset

    34 size_t ciCPCache::get_f1_offset(int index) {

    35   // Calculate the offset from the constantPoolCacheOop to the f1

    36   // field.

    37   ByteSize f1_offset =

    38     constantPoolCacheOopDesc::entry_offset(index) +

    39     ConstantPoolCacheEntry::f1_offset();

    41   return in_bytes(f1_offset);

    42 }

    45 // ------------------------------------------------------------------

    46 // ciCPCache::is_f1_null_at

    47 bool ciCPCache::is_f1_null_at(int index) {

    48   VM_ENTRY_MARK;

    49   oop f1 = entry_at(index)->f1();

    50   return (f1 == NULL);

    51 }

    54 // ------------------------------------------------------------------

    55 // ciCPCache::get_pool_index

    56 int ciCPCache::get_pool_index(int index) {

    57   VM_ENTRY_MARK;

    58   ConstantPoolCacheEntry* e = entry_at(index);

    59   if (e->is_secondary_entry())

    60     e = entry_at(e->main_entry_index());

    61   return e->constant_pool_index();

    62 }

    65 // ------------------------------------------------------------------

    66 // ciCPCache::print

    67 //

    68 // Print debugging information about the cache.

    69 void ciCPCache::print() {

    70   Unimplemented();

    71 }

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