1 /*
   2  * Copyright (c) 1999, 2010, 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 "precompiled.hpp"
  26 #include "asm/macroAssembler.hpp"
  27 #include "asm/macroAssembler.inline.hpp"
  28 #include "runtime/os.hpp"
  29 #include "runtime/threadLocalStorage.hpp"
  30 
  31 #ifndef _LP64
  32 void MacroAssembler::int3() {
  33   call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
  34 }
  35 
  36 void MacroAssembler::get_thread(Register thread) {
  37   movl(thread, rsp);
  38   shrl(thread, PAGE_SHIFT);
  39 
  40   ExternalAddress tls_base((address)ThreadLocalStorage::sp_map_addr());
  41   Address index(noreg, thread, Address::times_4);
  42   ArrayAddress tls(tls_base, index);
  43 
  44   movptr(thread, tls);
  45 }
  46 #else
  47 void MacroAssembler::int3() {
  48   call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
  49 }
  50 
  51 void MacroAssembler::get_thread(Register thread) {
  52   // call pthread_getspecific
  53   // void * pthread_getspecific(pthread_key_t key);
  54    if (thread != rax) {
  55      push(rax);
  56    }
  57    push(rdi);
  58    push(rsi);
  59    push(rdx);
  60    push(rcx);
  61    push(r8);
  62    push(r9);
  63    push(r10);
  64    // XXX
  65    mov(r10, rsp);
  66    andq(rsp, -16);
  67    push(r10);
  68    push(r11);
  69 
  70    movl(rdi, ThreadLocalStorage::thread_index());
  71    call(RuntimeAddress(CAST_FROM_FN_PTR(address, pthread_getspecific)));
  72 
  73    pop(r11);
  74    pop(rsp);
  75    pop(r10);
  76    pop(r9);
  77    pop(r8);
  78    pop(rcx);
  79    pop(rdx);
  80    pop(rsi);
  81    pop(rdi);
  82    if (thread != rax) {
  83        mov(thread, rax);
  84        pop(rax);
  85    }
  86 }
  87 #endif