/*

 * Copyright (c) 1997, 2010, 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.

 *

 */

#include "precompiled.hpp"

#include "prims/jvm.h"

#include "utilities/decoder.hpp"

Decoder::decoder_status  Decoder::_decoder_status = Decoder::no_error;

bool                     Decoder::_initialized = false;

#if !defined(_WINDOWS) && !defined(__APPLE__)

// Implementation of common functionalities among Solaris and Linux

#include "utilities/elfFile.hpp"

ElfFile* Decoder::_opened_elf_files = NULL;

bool Decoder::can_decode_C_frame_in_vm() {

  return true;

}

void Decoder::initialize() {

  _initialized = true;

}

void Decoder::uninitialize() {

  if (_opened_elf_files != NULL) {

    delete _opened_elf_files;

    _opened_elf_files = NULL;

  }

  _initialized = false;

}

Decoder::decoder_status Decoder::decode(address addr, const char* filepath, char *buf, int buflen, int *offset) {

  if (_decoder_status != no_error) {

    return _decoder_status;

  }

  ElfFile* file = get_elf_file(filepath);

  if (_decoder_status != no_error) {

    return _decoder_status;

  }

  const char* symbol = file->decode(addr, offset);

  if (file->get_status() == out_of_memory) {

    _decoder_status = out_of_memory;

    return _decoder_status;

  } else if (symbol != NULL) {

    if (!demangle(symbol, buf, buflen)) {

      jio_snprintf(buf, buflen, "%s", symbol);

    }

    return no_error;

  } else {

    return symbol_not_found;

  }

}

ElfFile* Decoder::get_elf_file(const char* filepath) {

  if (_decoder_status != no_error) {

    return NULL;

  }

  ElfFile* file = _opened_elf_files;

  while (file != NULL) {

    if (file->same_elf_file(filepath)) {

      return file;

    }

    file = file->m_next;

  }

  file = new ElfFile(filepath);

  if (file == NULL) {

    _decoder_status = out_of_memory;

  }

  if (_opened_elf_files != NULL) {

    file->m_next = _opened_elf_files;

  }

  _opened_elf_files = file;

  return file;

}

#endif