/*+
−
 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. 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_BSD_X86_VM_THREADLS_BSD_X86_HPP+
−
#define OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP+
−
+
−
  // Processor dependent parts of ThreadLocalStorage+
−
+
−
#ifndef AMD64+
−
  // map stack pointer to thread pointer - see notes in threadLS_bsd_x86.cpp+
−
  #define SP_BITLENGTH  32+
−
#ifndef PAGE_SHIFT+
−
  #define PAGE_SHIFT    12+
−
  #define PAGE_SIZE     (1UL << PAGE_SHIFT)+
−
#endif+
−
  static Thread* _sp_map[1UL << (SP_BITLENGTH - PAGE_SHIFT)];+
−
#endif // !AMD64+
−
+
−
public:+
−
+
−
#ifndef AMD64+
−
  static Thread** sp_map_addr() { return _sp_map; }+
−
#endif // !AMD64+
−
+
−
  static Thread* thread() {+
−
#ifdef AMD64+
−
    return (Thread*) os::thread_local_storage_at(thread_index());+
−
#else+
−
    uintptr_t sp;+
−
    __asm__ volatile ("movl %%esp, %0" : "=r" (sp));+
−
    return _sp_map[sp >> PAGE_SHIFT];+
−
#endif // AMD64+
−
  }+
−
+
−
#endif // OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP+
−