1/*
2 * Copyright (c) 1997, 2017, 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 */
24
25#include "precompiled.hpp"
26#include "memory/allocation.inline.hpp"
27#include "oops/instanceKlass.hpp"
28#include "oops/method.hpp"
29#include "oops/oop.inline.hpp"
30#include "prims/privilegedStack.hpp"
31#include "runtime/vframe.hpp"
32
33void PrivilegedElement::initialize(vframeStream* vfst, oop context, PrivilegedElement* next, TRAPS) {
34  Method* method        = vfst->method();
35  _klass                = method->method_holder();
36  _privileged_context   = context;
37#ifdef CHECK_UNHANDLED_OOPS
38  THREAD->allow_unhandled_oop(&_privileged_context);
39#endif // CHECK_UNHANDLED_OOPS
40  _frame_id             = vfst->frame_id();
41  _next                 = next;
42  assert(oopDesc::is_oop_or_null(_privileged_context), "must be an oop");
43  assert(oopDesc::is_oop_or_null(protection_domain()), "must be an oop");
44}
45
46void PrivilegedElement::oops_do(OopClosure* f) {
47  PrivilegedElement *cur = this;
48  do {
49    f->do_oop((oop*) &cur->_privileged_context);
50    cur = cur->_next;
51  } while(cur != NULL);
52}
53
54//-------------------------------------------------------------------------------
55#ifndef PRODUCT
56
57void PrivilegedElement::print_on(outputStream* st) const {
58  st->print("   " PTR_FORMAT " ", p2i(_frame_id));
59  _klass->print_value_on(st);
60  if (protection_domain() != NULL) {
61    st->print("   ");
62    protection_domain()->print_value_on(st);
63  }
64  st->cr();
65}
66
67bool PrivilegedElement::contains(address addr) {
68  PrivilegedElement *e = (PrivilegedElement *)addr;
69  if (e >= this && e < this+1) return true;
70
71  if (_next != NULL) {
72    return _next->contains(addr);
73  } else {
74    return false;
75  }
76}
77
78#endif
79