hotspot/src/share/vm/runtime/frame.inline.hpp
author jrose
Wed, 09 Jun 2010 18:50:45 -0700
changeset 5882 6b2aecc4f7d8
parent 5547 f4b087cbb361
child 7397 5b173b4ca846
permissions -rw-r--r--
6939203: JSR 292 needs method handle constants Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode. Reviewed-by: twisti, never
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     1
/*
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 2131
diff changeset
     2
 * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     4
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load
duke
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load
duke
parents:
diff changeset
     7
 * published by the Free Software Foundation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
     8
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load
duke
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load
duke
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
489c9b5090e2 Initial load
duke
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load
duke
parents:
diff changeset
    13
 * accompanied this code).
489c9b5090e2 Initial load
duke
parents:
diff changeset
    14
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load
duke
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load
duke
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    18
 *
5547
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 2131
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 2131
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 2131
diff changeset
    21
 * questions.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    22
 *
489c9b5090e2 Initial load
duke
parents:
diff changeset
    23
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
    24
2131
98f9cef66a34 6810672: Comment typos
twisti
parents: 1
diff changeset
    25
// This file holds platform-independent bodies of inline functions for frames.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
    26
489c9b5090e2 Initial load
duke
parents:
diff changeset
    27
// Note: The bcx usually contains the bcp; however during GC it contains the bci
489c9b5090e2 Initial load
duke
parents:
diff changeset
    28
//       (changed by gc_prologue() and gc_epilogue()) to be methodOop position
489c9b5090e2 Initial load
duke
parents:
diff changeset
    29
//       independent. These accessors make sure the correct value is returned
489c9b5090e2 Initial load
duke
parents:
diff changeset
    30
//       by testing the range of the bcx value. bcp's are guaranteed to be above
489c9b5090e2 Initial load
duke
parents:
diff changeset
    31
//       max_method_code_size, since methods are always allocated in OldSpace and
489c9b5090e2 Initial load
duke
parents:
diff changeset
    32
//       Eden is allocated before OldSpace.
489c9b5090e2 Initial load
duke
parents:
diff changeset
    33
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
    34
//       The bcp is accessed sometimes during GC for ArgumentDescriptors; than
489c9b5090e2 Initial load
duke
parents:
diff changeset
    35
//       the correct translation has to be performed (was bug).
489c9b5090e2 Initial load
duke
parents:
diff changeset
    36
489c9b5090e2 Initial load
duke
parents:
diff changeset
    37
inline bool frame::is_bci(intptr_t bcx) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    38
#ifdef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
    39
  return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    40
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
    41
  return 0 <= bcx && bcx <= max_method_code_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
    42
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
    43
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    44
489c9b5090e2 Initial load
duke
parents:
diff changeset
    45
inline bool frame::is_entry_frame() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    46
  return StubRoutines::returns_to_call_stub(pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
    47
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    48
489c9b5090e2 Initial load
duke
parents:
diff changeset
    49
inline bool frame::is_first_frame() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
    50
  return is_entry_frame() && entry_frame_is_first();
489c9b5090e2 Initial load
duke
parents:
diff changeset
    51
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
    52
489c9b5090e2 Initial load
duke
parents:
diff changeset
    53
// here are the platform-dependent bodies:
489c9b5090e2 Initial load
duke
parents:
diff changeset
    54
489c9b5090e2 Initial load
duke
parents:
diff changeset
    55
# include "incls/_frame_pd.inline.hpp.incl"