/*

 * 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_VM_COMPILER_DISASSEMBLER_HPP

#define SHARE_VM_COMPILER_DISASSEMBLER_HPP

#include "asm/codeBuffer.hpp"

#include "runtime/globals.hpp"

#include "utilities/macros.hpp"

class decode_env;

// The disassembler prints out assembly code annotated

// with Java specific information.

class Disassembler {

  friend class decode_env;

 private:

  // this is the type of the dll entry point:

  typedef void* (*decode_func_virtual)(uintptr_t start_va, uintptr_t end_va,

                               unsigned char* buffer, uintptr_t length,

                               void* (*event_callback)(void*, const char*, void*),

                               void* event_stream,

                               int (*printf_callback)(void*, const char*, ...),

                               void* printf_stream,

                               const char* options,

                               int newline);

  // this is the type of the dll entry point for old version:

  typedef void* (*decode_func)(void* start_va, void* end_va,

                               void* (*event_callback)(void*, const char*, void*),

                               void* event_stream,

                               int (*printf_callback)(void*, const char*, ...),

                               void* printf_stream,

                               const char* options);

  // points to the library.

  static void*    _library;

  // bailout

  static bool     _tried_to_load_library;

  // points to the decode function.

  static decode_func_virtual _decode_instructions_virtual;

  static decode_func _decode_instructions;

  // tries to load library and return whether it succedded.

  static bool load_library();

  // Machine dependent stuff

#include CPU_HEADER(disassembler)

 public:

  static bool can_decode() {

    ttyLocker tl;

    return (_decode_instructions_virtual != NULL) ||

           (_decode_instructions != NULL) ||

           load_library();

  }

  static void decode(CodeBlob *cb,               outputStream* st = NULL);

  static void decode(nmethod* nm,                outputStream* st = NULL);

};

#endif // SHARE_VM_COMPILER_DISASSEMBLER_HPP