| /* |
| * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2014, Red Hat Inc. All rights reserved. |
| * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef OS_CPU_LINUX_AARCH64_VM_THREAD_LINUX_AARCH64_HPP |
| #define OS_CPU_LINUX_AARCH64_VM_THREAD_LINUX_AARCH64_HPP |
| |
| private: |
| #ifdef ASSERT |
| // spill stack holds N callee-save registers at each Java call and |
| // grows downwards towards limit |
| // we need limit to check we have space for a spill and base so we |
| // can identify all live spill frames at GC (eventually) |
| address _spill_stack; |
| address _spill_stack_base; |
| address _spill_stack_limit; |
| #endif // ASSERT |
| |
| void pd_initialize() { |
| _anchor.clear(); |
| } |
| |
| frame pd_last_frame() { |
| assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); |
| if (_anchor.last_Java_pc() != NULL) { |
| return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc()); |
| } else { |
| // This will pick up pc from sp |
| return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp()); |
| } |
| } |
| |
| public: |
| // Mutators are highly dangerous.... |
| intptr_t* last_Java_fp() { return _anchor.last_Java_fp(); } |
| void set_last_Java_fp(intptr_t* fp) { _anchor.set_last_Java_fp(fp); } |
| |
| void set_base_of_stack_pointer(intptr_t* base_sp) { |
| } |
| |
| static ByteSize last_Java_fp_offset() { |
| return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset(); |
| } |
| |
| intptr_t* base_of_stack_pointer() { |
| return NULL; |
| } |
| void record_base_of_stack_pointer() { |
| } |
| |
| bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, |
| bool isInJava); |
| |
| bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava); |
| private: |
| bool pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava); |
| public: |
| |
| // 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() {} |
| |
| #endif // OS_CPU_LINUX_AARCH64_VM_THREAD_LINUX_AARCH64_HPP |