thread_linux_x86.hpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 2000, 2007, 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 private: 26 void pd_initialize() { 27 _anchor.clear(); 28 } 29 30 frame pd_last_frame() { 31 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); 32 if (_anchor.last_Java_pc() != NULL) { 33 return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc()); 34 } else { 35 // This will pick up pc from sp 36 return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp()); 37 } 38 } 39 40 public: 41 // Mutators are highly dangerous.... 42 intptr_t* last_Java_fp() { return _anchor.last_Java_fp(); } 43 void set_last_Java_fp(intptr_t* fp) { _anchor.set_last_Java_fp(fp); } 44 45 void set_base_of_stack_pointer(intptr_t* base_sp) { 46 } 47 48 static ByteSize last_Java_fp_offset() { 49 return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset(); 50 } 51 52 intptr_t* base_of_stack_pointer() { 53 return NULL; 54 } 55 void record_base_of_stack_pointer() { 56 } 57 58 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, 59 bool isInJava); 60 61 // These routines are only used on cpu architectures that 62 // have separate register stacks (Itanium). 63 static bool register_stack_overflow() { return false; } 64 static void enable_register_stack_guard() {} 65 static void disable_register_stack_guard() {} 66