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Datei: frame.inline.hpp Sprache: C

/*
* Copyright (c) 1997, 2022, Oracle and/or its affiliates. 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.
*
*/

#ifndef SHARE_RUNTIME_FRAME_INLINE_HPP
#define SHARE_RUNTIME_FRAME_INLINE_HPP

#include "runtime/frame.hpp"

#include "code/codeBlob.inline.hpp"
#include "code/compiledMethod.inline.hpp"
#include "interpreter/interpreter.hpp"
#include "oops/stackChunkOop.inline.hpp"
#include "oops/method.hpp"
#include "runtime/continuation.hpp"
#include "runtime/registerMap.hpp"
#include "runtime/stubRoutines.hpp"
#include "utilities/macros.hpp"
#ifdef ZERO
# include "entryFrame_zero.hpp"
# include "fakeStubFrame_zero.hpp"
# include "interpreterFrame_zero.hpp"
#endif

#include CPU_HEADER_INLINE(frame)

inline bool frame::is_entry_frame() const {
  return StubRoutines::returns_to_call_stub(pc());
}

inline bool frame::is_stub_frame() const {
  return StubRoutines::is_stub_code(pc()) || (_cb != NULL && _cb->is_adapter_blob());
}

inline bool frame::is_first_frame() const {
  return (is_entry_frame() && entry_frame_is_first())
      // Upcall stub frames entry frames are only present on certain platforms
      || (is_upcall_stub_frame() && upcall_stub_frame_is_first());
}

inline bool frame::is_upcall_stub_frame() const {
  return _cb != NULL && _cb->is_upcall_stub();
}

inline bool frame::is_compiled_frame() const {
  if (_cb != NULL &&
      _cb->is_compiled() &&
      ((CompiledMethod*)_cb)->is_java_method()) {
    return true;
  }
  return false;
}

template <typename RegisterMapT>
inline address frame::oopmapreg_to_location(VMReg reg, const RegisterMapT* reg_map) const {
  if (reg->is_reg()) {
    // If it is passed in a register, it got spilled in the stub frame.
    return reg_map->location(reg, sp());
  } else {
    int sp_offset_in_bytes = reg->reg2stack() * VMRegImpl::stack_slot_size;
    if (reg_map->in_cont()) {
      return (address)((intptr_t)reg_map->as_RegisterMap()->stack_chunk()->relativize_usp_offset(*this, sp_offset_in_bytes));
    }
    address usp = (address)unextended_sp();
    assert(reg_map->thread() == NULL || reg_map->thread()->is_in_usable_stack(usp), INTPTR_FORMAT, p2i(usp));
    return (usp + sp_offset_in_bytes);
  }
}

template <typename RegisterMapT>
inline oop* frame::oopmapreg_to_oop_location(VMReg reg, const RegisterMapT* reg_map) const {
  return (oop*)oopmapreg_to_location(reg, reg_map);
}

inline CodeBlob* frame::get_cb() const {
  // if (_cb == NULL) _cb = CodeCache::find_blob(_pc);
  if (_cb == NULL) {
    int slot;
    _cb = CodeCache::find_blob_and_oopmap(_pc, slot);
    if (_oop_map == NULL && slot >= 0) {
      _oop_map = _cb->oop_map_for_slot(slot, _pc);
    }
  }
  return _cb;
}

#endif // SHARE_RUNTIME_FRAME_INLINE_HPP

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