Mercurial > hg > graal-compiler
view src/os_cpu/linux_zero/vm/thread_linux_zero.hpp @ 1536:892898e961c5
Merge
author | dcubed |
---|---|
date | Mon, 17 May 2010 07:11:27 -0700 |
parents | 6cfbdb113e52 |
children | c18cbe5936b8 |
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/* * Copyright 2000-2007 Sun Microsystems, Inc. All Rights Reserved. * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ private: ZeroStack _zero_stack; ZeroFrame* _top_zero_frame; void pd_initialize() { _top_zero_frame = NULL; } public: ZeroStack *zero_stack() { return &_zero_stack; } public: ZeroFrame *top_zero_frame() { return _top_zero_frame; } void push_zero_frame(ZeroFrame *frame) { *(ZeroFrame **) frame = _top_zero_frame; _top_zero_frame = frame; } void pop_zero_frame() { zero_stack()->set_sp((intptr_t *) _top_zero_frame + 1); _top_zero_frame = *(ZeroFrame **) _top_zero_frame; } public: static ByteSize zero_stack_offset() { return byte_offset_of(JavaThread, _zero_stack); } static ByteSize top_zero_frame_offset() { return byte_offset_of(JavaThread, _top_zero_frame); } public: void record_base_of_stack_pointer() { assert(top_zero_frame() == NULL, "junk on stack prior to Java call"); } void set_base_of_stack_pointer(intptr_t* base_sp) { assert(base_sp == NULL, "should be"); assert(top_zero_frame() == NULL, "junk on stack after Java call"); } public: void set_last_Java_frame() { set_last_Java_frame(top_zero_frame(), zero_stack()->sp()); } void reset_last_Java_frame() { frame_anchor()->zap(); } void set_last_Java_frame(ZeroFrame* fp, intptr_t* sp) { frame_anchor()->set(sp, NULL, fp); } public: ZeroFrame* last_Java_fp() { return frame_anchor()->last_Java_fp(); } private: frame pd_last_frame() { assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); return frame(last_Java_fp(), last_Java_sp()); } public: static ByteSize last_Java_fp_offset() { return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset(); } public: // Check for pending suspend requests and pending asynchronous // exceptions. There are separate accessors for these, but // _suspend_flags is volatile so using them would be unsafe. bool has_special_condition_for_native_trans() { return _suspend_flags != 0; } public: bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava) { ShouldNotCallThis(); } // These routines are only used on cpu architectures that // have separate register stacks (Itanium). static bool register_stack_overflow() { return false; } static void enable_register_stack_guard() {} static void disable_register_stack_guard() {}