84 lines
3.0 KiB
C++
84 lines
3.0 KiB
C++
/*
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* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2014, Red Hat Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef OS_CPU_LINUX_AARCH64_VM_THREAD_LINUX_AARCH64_HPP
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#define OS_CPU_LINUX_AARCH64_VM_THREAD_LINUX_AARCH64_HPP
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private:
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#ifdef ASSERT
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// spill stack holds N callee-save registers at each Java call and
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// grows downwards towards limit
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// we need limit to check we have space for a spill and base so we
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// can identify all live spill frames at GC (eventually)
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address _spill_stack;
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address _spill_stack_base;
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address _spill_stack_limit;
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#endif // ASSERT
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void pd_initialize() {
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_anchor.clear();
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}
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frame pd_last_frame() {
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assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
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return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc());
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}
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public:
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// Mutators are highly dangerous....
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intptr_t* last_Java_fp() { return _anchor.last_Java_fp(); }
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void set_last_Java_fp(intptr_t* fp) { _anchor.set_last_Java_fp(fp); }
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void set_base_of_stack_pointer(intptr_t* base_sp) {
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}
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static ByteSize last_Java_fp_offset() {
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return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset();
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}
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intptr_t* base_of_stack_pointer() {
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return NULL;
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}
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void record_base_of_stack_pointer() {
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}
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bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
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bool isInJava);
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bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava);
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private:
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bool pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava);
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public:
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static Thread *aarch64_get_thread_helper();
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// These routines are only used on cpu architectures that
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// have separate register stacks (Itanium).
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static bool register_stack_overflow() { return false; }
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static void enable_register_stack_guard() {}
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static void disable_register_stack_guard() {}
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#endif // OS_CPU_LINUX_AARCH64_VM_THREAD_LINUX_AARCH64_HPP
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