thread_linux_x86.hpp revision 4802:f2110083203d 
1/*
2 * Copyright (c) 2000, 2013, 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#ifndef OS_CPU_LINUX_X86_VM_THREAD_LINUX_X86_HPP
26#define OS_CPU_LINUX_X86_VM_THREAD_LINUX_X86_HPP
27
28 private:
29  void pd_initialize() {
30    _anchor.clear();
31  }
32
33  frame pd_last_frame() {
34    assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
35    if (_anchor.last_Java_pc() != NULL) {
36      return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc());
37    } else {
38      // This will pick up pc from sp
39      return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp());
40    }
41  }
42
43 public:
44  // Mutators are highly dangerous....
45  intptr_t* last_Java_fp()                       { return _anchor.last_Java_fp(); }
46  void  set_last_Java_fp(intptr_t* fp)           { _anchor.set_last_Java_fp(fp);   }
47
48  void set_base_of_stack_pointer(intptr_t* base_sp) {
49  }
50
51  static ByteSize last_Java_fp_offset()          {
52    return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset();
53  }
54
55  intptr_t* base_of_stack_pointer() {
56    return NULL;
57  }
58  void record_base_of_stack_pointer() {
59  }
60
61  bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
62    bool isInJava);
63
64  bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava);
65private:
66  bool pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava);
67public:
68
69  // These routines are only used on cpu architectures that
70  // have separate register stacks (Itanium).
71  static bool register_stack_overflow() { return false; }
72  static void enable_register_stack_guard() {}
73  static void disable_register_stack_guard() {}
74
75#endif // OS_CPU_LINUX_X86_VM_THREAD_LINUX_X86_HPP
76