1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os_cpu/linux_zero/vm/thread_linux_zero.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,121 @@
1.4 +/*
1.5 + * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +#ifndef OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP
1.30 +#define OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP
1.31 +
1.32 + private:
1.33 + ZeroStack _zero_stack;
1.34 + ZeroFrame* _top_zero_frame;
1.35 +
1.36 + void pd_initialize() {
1.37 + _top_zero_frame = NULL;
1.38 + }
1.39 +
1.40 + public:
1.41 + ZeroStack *zero_stack() {
1.42 + return &_zero_stack;
1.43 + }
1.44 +
1.45 + public:
1.46 + ZeroFrame *top_zero_frame() {
1.47 + return _top_zero_frame;
1.48 + }
1.49 + void push_zero_frame(ZeroFrame *frame) {
1.50 + *(ZeroFrame **) frame = _top_zero_frame;
1.51 + _top_zero_frame = frame;
1.52 + }
1.53 + void pop_zero_frame() {
1.54 + zero_stack()->set_sp((intptr_t *) _top_zero_frame + 1);
1.55 + _top_zero_frame = *(ZeroFrame **) _top_zero_frame;
1.56 + }
1.57 +
1.58 + public:
1.59 + static ByteSize zero_stack_offset() {
1.60 + return byte_offset_of(JavaThread, _zero_stack);
1.61 + }
1.62 + static ByteSize top_zero_frame_offset() {
1.63 + return byte_offset_of(JavaThread, _top_zero_frame);
1.64 + }
1.65 +
1.66 + public:
1.67 + void record_base_of_stack_pointer() {
1.68 + assert(top_zero_frame() == NULL, "junk on stack prior to Java call");
1.69 + }
1.70 + void set_base_of_stack_pointer(intptr_t* base_sp) {
1.71 + assert(base_sp == NULL, "should be");
1.72 + assert(top_zero_frame() == NULL, "junk on stack after Java call");
1.73 + }
1.74 +
1.75 + public:
1.76 + void set_last_Java_frame() {
1.77 + set_last_Java_frame(top_zero_frame(), zero_stack()->sp());
1.78 + }
1.79 + void reset_last_Java_frame() {
1.80 + frame_anchor()->zap();
1.81 + }
1.82 + void set_last_Java_frame(ZeroFrame* fp, intptr_t* sp) {
1.83 + frame_anchor()->set(sp, NULL, fp);
1.84 + }
1.85 +
1.86 + public:
1.87 + ZeroFrame* last_Java_fp() {
1.88 + return frame_anchor()->last_Java_fp();
1.89 + }
1.90 +
1.91 + private:
1.92 + frame pd_last_frame() {
1.93 + assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
1.94 + return frame(last_Java_fp(), last_Java_sp());
1.95 + }
1.96 +
1.97 + public:
1.98 + static ByteSize last_Java_fp_offset() {
1.99 + return byte_offset_of(JavaThread, _anchor) +
1.100 + JavaFrameAnchor::last_Java_fp_offset();
1.101 + }
1.102 +
1.103 + public:
1.104 + // Check for pending suspend requests and pending asynchronous
1.105 + // exceptions. There are separate accessors for these, but
1.106 + // _suspend_flags is volatile so using them would be unsafe.
1.107 + bool has_special_condition_for_native_trans() {
1.108 + return _suspend_flags != 0;
1.109 + }
1.110 +
1.111 + public:
1.112 + bool pd_get_top_frame_for_signal_handler(frame* fr_addr,
1.113 + void* ucontext,
1.114 + bool isInJava) {
1.115 + ShouldNotCallThis();
1.116 + }
1.117 +
1.118 + // These routines are only used on cpu architectures that
1.119 + // have separate register stacks (Itanium).
1.120 + static bool register_stack_overflow() { return false; }
1.121 + static void enable_register_stack_guard() {}
1.122 + static void disable_register_stack_guard() {}
1.123 +
1.124 +#endif // OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP
