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comparison src/os_cpu/linux_x86/vm/thread_linux_x86.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2000-2007 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 private:
26 void pd_initialize() {
27 _anchor.clear();
28 }
29
30 frame pd_last_frame() {
31 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
32 if (_anchor.last_Java_pc() != NULL) {
33 return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc());
34 } else {
35 // This will pick up pc from sp
36 return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp());
37 }
38 }
39
40 public:
41 // Mutators are highly dangerous....
42 intptr_t* last_Java_fp() { return _anchor.last_Java_fp(); }
43 void set_last_Java_fp(intptr_t* fp) { _anchor.set_last_Java_fp(fp); }
44
45 void set_base_of_stack_pointer(intptr_t* base_sp) {
46 }
47
48 static ByteSize last_Java_fp_offset() {
49 return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset();
50 }
51
52 intptr_t* base_of_stack_pointer() {
53 return NULL;
54 }
55 void record_base_of_stack_pointer() {
56 }
57
58 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
59 bool isInJava);
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() {}