frame_zero.inline.hpp

/*
 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
 * 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 CPU_ZERO_VM_FRAME_ZERO_INLINE_HPP
#define CPU_ZERO_VM_FRAME_ZERO_INLINE_HPP

#include "code/codeCache.hpp"

// Constructors

inline frame::frame() {
  _zeroframe = NULL;
  _sp = NULL;
  _pc = NULL;
  _cb = NULL;
  _deopt_state = unknown;
}

inline address  frame::sender_pc()           const { ShouldNotCallThis(); return NULL; }

inline frame::frame(ZeroFrame* zf, intptr_t* sp) {
  _zeroframe = zf;
  _sp = sp;
  switch (zeroframe()->type()) {
  case ZeroFrame::ENTRY_FRAME:
    _pc = StubRoutines::call_stub_return_pc();
    _cb = NULL;
    _deopt_state = not_deoptimized;
    break;

  case ZeroFrame::INTERPRETER_FRAME:
    _pc = NULL;
    _cb = NULL;
    _deopt_state = not_deoptimized;
    break;

  case ZeroFrame::SHARK_FRAME: {
    _pc = zero_sharkframe()->pc();
    _cb = CodeCache::find_blob_unsafe(pc());
    address original_pc = nmethod::get_deopt_original_pc(this);
    if (original_pc != NULL) {
      _pc = original_pc;
      _deopt_state = is_deoptimized;
    } else {
      _deopt_state = not_deoptimized;
    }
    break;
  }
  case ZeroFrame::FAKE_STUB_FRAME:
    _pc = NULL;
    _cb = NULL;
    _deopt_state = not_deoptimized;
    break;

  default:
    ShouldNotReachHere();
  }
}

// Accessors

inline intptr_t* frame::sender_sp() const {
  return fp() + 1;
}

inline intptr_t* frame::real_fp() const {
  return fp();
}

inline intptr_t* frame::link() const {
  ShouldNotCallThis();
  return NULL;
}

#ifdef CC_INTERP
inline interpreterState frame::get_interpreterState() const {
  return zero_interpreterframe()->interpreter_state();
}

inline intptr_t** frame::interpreter_frame_locals_addr() const {
  return &(get_interpreterState()->_locals);
}

inline intptr_t* frame::interpreter_frame_bcx_addr() const {
  return (intptr_t*) &(get_interpreterState()->_bcp);
}

inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
  return &(get_interpreterState()->_constants);
}

inline Method** frame::interpreter_frame_method_addr() const {
  return &(get_interpreterState()->_method);
}

inline intptr_t* frame::interpreter_frame_mdx_addr() const {
  return (intptr_t*) &(get_interpreterState()->_mdx);
}

inline intptr_t* frame::interpreter_frame_tos_address() const {
  return get_interpreterState()->_stack + 1;
}
#endif // CC_INTERP

inline int frame::interpreter_frame_monitor_size() {
  return BasicObjectLock::size();
}

inline intptr_t* frame::interpreter_frame_expression_stack() const {
  intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
  return monitor_end - 1;
}

inline jint frame::interpreter_frame_expression_stack_direction() {
  return -1;
}

// Return a unique id for this frame. The id must have a value where
// we can distinguish identity and younger/older relationship. NULL
// represents an invalid (incomparable) frame.
inline intptr_t* frame::id() const {
  return fp();
}

inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
  return zero_entryframe()->call_wrapper();
}

inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
  ShouldNotCallThis();
}

inline oop frame::saved_oop_result(RegisterMap* map) const {
  ShouldNotCallThis();
  return NULL;
}

inline bool frame::is_older(intptr_t* id) const {
  ShouldNotCallThis();
  return false;
}

inline intptr_t* frame::entry_frame_argument_at(int offset) const {
  ShouldNotCallThis();
  return NULL;
}

inline intptr_t* frame::unextended_sp() const {
  if (zeroframe()->is_shark_frame())
    return zero_sharkframe()->unextended_sp();
  else
    return (intptr_t *) -1;
}

#endif // CPU_ZERO_VM_FRAME_ZERO_INLINE_HPP