/*

 * Copyright (c) 2011, 2015, 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"

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

#include "decoder_elf.hpp"

#include "memory/allocation.inline.hpp"

ElfDecoder::~ElfDecoder() {

  if (_opened_elf_files != NULL) {

    delete _opened_elf_files;

    _opened_elf_files = NULL;

  }

}

bool ElfDecoder::decode(address addr, char *buf, int buflen, int* offset, const char* filepath, bool demangle_name) {

  assert(filepath, "null file path");

  assert(buf != NULL && buflen > 0, "Invalid buffer");

  if (has_error()) return false;

  ElfFile* file = get_elf_file(filepath);

  if (file == NULL) {

    return false;

  }

  if (!file->decode(addr, buf, buflen, offset)) {

    return false;

  }

  if (demangle_name && (buf[0] != '\0')) {

    demangle(buf, buf, buflen);

  }

  return true;

}

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

  ElfFile* file;

  file = _opened_elf_files;

  while (file != NULL) {

    if (file->same_elf_file(filepath)) {

      return file;

    }

    file = file->next();

  }

  file = new (std::nothrow)ElfFile(filepath);

  if (file != NULL) {

    if (_opened_elf_files != NULL) {

      file->set_next(_opened_elf_files);

    }

    _opened_elf_files = file;

  }

  return file;

}

#endif // !_WINDOWS && !__APPLE__