1 /* 2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef OS_CPU_LINUX_X86_VM_THREAD_LINUX_X86_HPP 26 #define OS_CPU_LINUX_X86_VM_THREAD_LINUX_X86_HPP 27 28 private: 29 void pd_initialize() { 30 _anchor.clear(); 31 } 32 33 frame pd_last_frame() { 34 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); 35 vmassert(_anchor.last_Java_pc() != NULL, "not walkable"); 36 return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc()); 37 } 38 39 public: 40 // Mutators are highly dangerous.... 41 intptr_t* last_Java_fp() { return _anchor.last_Java_fp(); } 42 void set_last_Java_fp(intptr_t* fp) { _anchor.set_last_Java_fp(fp); } 43 44 void set_base_of_stack_pointer(intptr_t* base_sp) { 45 } 46 47 static ByteSize last_Java_fp_offset() { 48 return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset(); 49 } 50 51 intptr_t* base_of_stack_pointer() { 52 return NULL; 53 } 54 void record_base_of_stack_pointer() { 55 } 56 57 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, 58 bool isInJava); 59 60 bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava); 61 private: 62 bool pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava); 63 public: 64 65 // These routines are only used on cpu architectures that 66 // have separate register stacks (Itanium). 67 static bool register_stack_overflow() { return false; } 68 static void enable_register_stack_guard() {} 69 static void disable_register_stack_guard() {} 70 71 #endif // OS_CPU_LINUX_X86_VM_THREAD_LINUX_X86_HPP