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comparison src/os_cpu/bsd_zero/vm/thread_bsd_zero.hpp @ 3960:f08d439fab8c

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7089790: integrate bsd-port changes Reviewed-by: kvn, twisti, jrose Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
author never
date Sun, 25 Sep 2011 16:03:29 -0700
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children e16282db4946
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3959:eda6988c0d81 3960:f08d439fab8c
1 /*
2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef OS_CPU_BSD_ZERO_VM_THREAD_BSD_ZERO_HPP
27 #define OS_CPU_BSD_ZERO_VM_THREAD_BSD_ZERO_HPP
28
29 private:
30 ZeroStack _zero_stack;
31 ZeroFrame* _top_zero_frame;
32
33 void pd_initialize() {
34 _top_zero_frame = NULL;
35 }
36
37 public:
38 ZeroStack *zero_stack() {
39 return &_zero_stack;
40 }
41
42 public:
43 ZeroFrame *top_zero_frame() {
44 return _top_zero_frame;
45 }
46 void push_zero_frame(ZeroFrame *frame) {
47 *(ZeroFrame **) frame = _top_zero_frame;
48 _top_zero_frame = frame;
49 }
50 void pop_zero_frame() {
51 zero_stack()->set_sp((intptr_t *) _top_zero_frame + 1);
52 _top_zero_frame = *(ZeroFrame **) _top_zero_frame;
53 }
54
55 public:
56 static ByteSize zero_stack_offset() {
57 return byte_offset_of(JavaThread, _zero_stack);
58 }
59 static ByteSize top_zero_frame_offset() {
60 return byte_offset_of(JavaThread, _top_zero_frame);
61 }
62
63 public:
64 void record_base_of_stack_pointer() {
65 assert(top_zero_frame() == NULL, "junk on stack prior to Java call");
66 }
67 void set_base_of_stack_pointer(intptr_t* base_sp) {
68 assert(base_sp == NULL, "should be");
69 assert(top_zero_frame() == NULL, "junk on stack after Java call");
70 }
71
72 public:
73 void set_last_Java_frame() {
74 set_last_Java_frame(top_zero_frame(), zero_stack()->sp());
75 }
76 void reset_last_Java_frame() {
77 frame_anchor()->zap();
78 }
79 void set_last_Java_frame(ZeroFrame* fp, intptr_t* sp) {
80 frame_anchor()->set(sp, NULL, fp);
81 }
82
83 public:
84 ZeroFrame* last_Java_fp() {
85 return frame_anchor()->last_Java_fp();
86 }
87
88 private:
89 frame pd_last_frame() {
90 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
91 return frame(last_Java_fp(), last_Java_sp());
92 }
93
94 public:
95 static ByteSize last_Java_fp_offset() {
96 return byte_offset_of(JavaThread, _anchor) +
97 JavaFrameAnchor::last_Java_fp_offset();
98 }
99
100 public:
101 // Check for pending suspend requests and pending asynchronous
102 // exceptions. There are separate accessors for these, but
103 // _suspend_flags is volatile so using them would be unsafe.
104 bool has_special_condition_for_native_trans() {
105 return _suspend_flags != 0;
106 }
107
108 public:
109 bool pd_get_top_frame_for_signal_handler(frame* fr_addr,
110 void* ucontext,
111 bool isInJava) {
112 ShouldNotCallThis();
113 }
114
115 // These routines are only used on cpu architectures that
116 // have separate register stacks (Itanium).
117 static bool register_stack_overflow() { return false; }
118 static void enable_register_stack_guard() {}
119 static void disable_register_stack_guard() {}
120
121 #endif // OS_CPU_BSD_ZERO_VM_THREAD_BSD_ZERO_HPP