1 /*
   2  * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2016 SAP SE. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef OS_CPU_LINUX_S390_VM_THREAD_LINUX_S390_HPP
  27 #define OS_CPU_LINUX_S390_VM_THREAD_LINUX_S390_HPP
  28 
  29  private:
  30 
  31   void pd_initialize() {
  32     _anchor.clear();
  33   }
  34 
  35   // The `last' frame is the youngest Java frame on the thread's stack.
  36   frame pd_last_frame();
  37 
  38  public:
  39   void set_base_of_stack_pointer(intptr_t* base_sp) {}
  40   intptr_t* base_of_stack_pointer() { return NULL; }
  41   void record_base_of_stack_pointer() {}
  42 
  43   // These routines are only used on cpu architectures that
  44   // have separate register stacks (Itanium).
  45   static bool register_stack_overflow() { return false; }
  46   static void enable_register_stack_guard() {}
  47   static void disable_register_stack_guard() {}
  48 
  49   bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava);
  50 
  51 #endif // OS_CPU_LINUX_S390_VM_THREAD_LINUX_S390_HPP