1 /*
   2  * Copyright (c) 1999, 2008, 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 #include "incls/_precompiled.incl"
  26 #include "incls/_assembler_linux_x86.cpp.incl"
  27 
  28 #ifndef _LP64
  29 void MacroAssembler::int3() {
  30   call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
  31 }
  32 
  33 void MacroAssembler::get_thread(Register thread) {
  34   movl(thread, rsp);
  35   shrl(thread, PAGE_SHIFT);
  36 
  37   ExternalAddress tls_base((address)ThreadLocalStorage::sp_map_addr());
  38   Address index(noreg, thread, Address::times_4);
  39   ArrayAddress tls(tls_base, index);
  40 
  41   movptr(thread, tls);
  42 }
  43 #else
  44 void MacroAssembler::int3() {
  45   call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
  46 }
  47 
  48 void MacroAssembler::get_thread(Register thread) {
  49   // call pthread_getspecific
  50   // void * pthread_getspecific(pthread_key_t key);
  51    if (thread != rax) {
  52      push(rax);
  53    }
  54    push(rdi);
  55    push(rsi);
  56    push(rdx);
  57    push(rcx);
  58    push(r8);
  59    push(r9);
  60    push(r10);
  61    // XXX
  62    mov(r10, rsp);
  63    andq(rsp, -16);
  64    push(r10);
  65    push(r11);
  66 
  67    movl(rdi, ThreadLocalStorage::thread_index());
  68    call(RuntimeAddress(CAST_FROM_FN_PTR(address, pthread_getspecific)));
  69 
  70    pop(r11);
  71    pop(rsp);
  72    pop(r10);
  73    pop(r9);
  74    pop(r8);
  75    pop(rcx);
  76    pop(rdx);
  77    pop(rsi);
  78    pop(rdi);
  79    if (thread != rax) {
  80        mov(thread, rax);
  81        pop(rax);
  82    }
  83 }
  84 #endif