frame.inline.hpp revision 605:98cb887364d3 
1/*
2 * Copyright 1997-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25// This file holds platform-independent bodies of inline functions for frames.
26
27// Note: The bcx usually contains the bcp; however during GC it contains the bci
28//       (changed by gc_prologue() and gc_epilogue()) to be methodOop position
29//       independent. These accessors make sure the correct value is returned
30//       by testing the range of the bcx value. bcp's are guaranteed to be above
31//       max_method_code_size, since methods are always allocated in OldSpace and
32//       Eden is allocated before OldSpace.
33//
34//       The bcp is accessed sometimes during GC for ArgumentDescriptors; than
35//       the correct translation has to be performed (was bug).
36
37inline bool frame::is_bci(intptr_t bcx) {
38#ifdef _LP64
39  return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ;
40#else
41  return 0 <= bcx && bcx <= max_method_code_size;
42#endif
43}
44
45inline bool frame::is_entry_frame() const {
46  return StubRoutines::returns_to_call_stub(pc());
47}
48
49inline bool frame::is_first_frame() const {
50  return is_entry_frame() && entry_frame_is_first();
51}
52
53// here are the platform-dependent bodies:
54
55# include "incls/_frame_pd.inline.hpp.incl"
56