/*

 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2016 SAP SE. 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.

 *

 */

#include "precompiled.hpp"

#include "runtime/frame.inline.hpp"

#include "runtime/thread.hpp"

frame JavaThread::pd_last_frame() {

  assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");

  intptr_t* sp = last_Java_sp();

  address pc = _anchor.last_Java_pc();

  // Last_Java_pc ist not set if we come here from compiled code.

  if (pc == NULL) {

    pc = (address) *(sp + 14);

  }

  return frame(sp, pc);

}

bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava) {

  ucontext_t* uc = (ucontext_t*) ucontext;

  *fr_addr = frame((intptr_t*)uc->uc_mcontext.gregs[15/*REG_SP*/],

                   (address)uc->uc_mcontext.psw.addr);

  return true;

}

// Forte Analyzer AsyncGetCallTrace profiling support is not implemented on Linux/S390x.

bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava) {

  Unimplemented();

  return false;

}

void JavaThread::cache_global_variables() { }