1/*
2 * Copyright (c) 2000, 2019, 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_THREAD_LINUX_X86_HPP
26#define OS_CPU_LINUX_X86_THREAD_LINUX_X86_HPP
27
28 private:
29 void pd_initialize() {
30 _anchor.clear();
31 }
32
33 frame pd_last_frame();
34
35 public:
36 // Mutators are highly dangerous....
37 intptr_t* last_Java_fp() { return _anchor.last_Java_fp(); }
38 void set_last_Java_fp(intptr_t* fp) { _anchor.set_last_Java_fp(fp); }
39
40 void set_base_of_stack_pointer(intptr_t* base_sp) {
41 }
42
43 static ByteSize last_Java_fp_offset() {
44 return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset();
45 }
46
47 intptr_t* base_of_stack_pointer() {
48 return NULL;
49 }
50 void record_base_of_stack_pointer() {
51 }
52
53 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
54 bool isInJava);
55
56 bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava);
57private:
58 bool pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava);
59public:
60
61 // These routines are only used on cpu architectures that
62 // have separate register stacks (Itanium).
63 static bool register_stack_overflow() { return false; }
64 static void enable_register_stack_guard() {}
65 static void disable_register_stack_guard() {}
66
67#endif // OS_CPU_LINUX_X86_THREAD_LINUX_X86_HPP
68