logcom.cpp revision eaca9d32222ed374922b99c7d503e26b548d2787
/* $Id$ */
/** @file
* IPRT - Logging to Serial Port.
*/
/*
* Copyright (C) 2006-2007 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*******************************************************************************
* Defined Constants And Macros *
*******************************************************************************/
#ifndef IPRT_UART_BASE
/** The port address of the COM port to log to.
*
* To override the default (COM1) append IPRT_UART_BASE=0xWXYZ to DEFS in your
* LocalConfig.kmk. Alternatively you can edit this file, but the don't forget
*
* Standard port assignments are: COM1=0x3f8, COM2=0x2f8, COM3=0x3e8, COM4=0x2e8.
*/
# define IPRT_UART_BASE 0x3f8
#endif
/*******************************************************************************
* Header Files *
*******************************************************************************/
# include <iprt/asm-amd64-x86.h>
#endif
/*******************************************************************************
* Internal Functions *
*******************************************************************************/
/**
* Prints a formatted string to the serial port used for logging.
*
* @returns Number of bytes written.
* @param pszFormat Format string.
* @param ... Optional arguments specified in the format string.
*/
{
return cb;
}
/**
* Prints a formatted string to the serial port used for logging.
*
* @returns Number of bytes written.
* @param pszFormat Format string.
* @param args Optional arguments specified in the format string.
*/
{
}
/**
* Callback for RTLogFormatV which writes to the com port.
* See PFNLOGOUTPUT() for details.
*/
{
if (cbChars)
return cbChars;
}
/**
* Write log buffer to COM port.
*
* @param pach Pointer to the buffer to write.
* @param cb Number of bytes to write.
*/
{
#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
{
register unsigned cMaxWait;
/* expand \n -> \r\n */
if (*pu8 == '\n')
/* Check if port is ready. */
cMaxWait = ~0;
do
{
cMaxWait--;
/* write */
}
#else
/* PORTME? */
#endif
}