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[/] [mb-jpeg/] [tags/] [STEP1_1/] [microblaze_0/] [include/] [xenv_none.h] - Blame information for rev 66

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1 5 quickwayne 
/******************************************************************************
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*
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*       XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
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*       AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND
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*       SOLUTIONS FOR XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE,
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*       OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,
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*       APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION
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*       THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
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*       AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
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*       FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY
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*       WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
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*       IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
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*       REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
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*       INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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*       FOR A PARTICULAR PURPOSE.
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*
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*       (c) Copyright 2002 Xilinx Inc.
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*       All rights reserved.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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*
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* @file xenv_none.h
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*
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* Defines common services specified by xenv.h. Some of these services are
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* defined as not performing any action. The implementation of these services
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* are left to the user.
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*
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* @note
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*
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* This file is not intended to be included directly by driver code. Instead,
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* the generic xenv.h file is intended to be included by driver code.
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver   Who  Date     Changes
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* ----- ---- -------- -----------------------------------------------
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* 1.00a rmm  03/21/02 First release
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* 1.00a xd   11/03/04 Improved support for doxygen.
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* </pre>
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*
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*
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******************************************************************************/
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#ifndef XENV_NONE_H /* prevent circular inclusions */
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#define XENV_NONE_H /* by using protection macros */
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/***************************** Include Files *********************************/
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/*****************************************************************************/
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/**
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 *
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 * Copies a non-overlapping block of memory.
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 *
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 * @param   DestPtr is the destination address to copy data to.
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 * @param   SrcPtr is the source address to copy data from.
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 * @param   Bytes is the number of bytes to copy.
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 *
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 * @return  None.
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 *
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 * @note
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 *
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 * Signature: void XENV_MEM_COPY(void *DestPtr, void *SrcPtr, unsigned Bytes)
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 *
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 *****************************************************************************/
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#define XENV_MEM_COPY(DestPtr, SrcPtr, Bytes)                     \
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{                                                                 \
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    char *Dest = (char*)(DestPtr);                                \
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    char *Src  = (char*)(SrcPtr);                                 \
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    unsigned BytesLeft = (Bytes);                                 \
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                                                                  \
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    while (BytesLeft--) *Dest++ = *Src++;                         \
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}
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/*****************************************************************************/
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/**
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 *
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 * Fills an area of memory with constant data.
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 *
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 * @param   DestPtr is the destination address to set.
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 * @param   Data contains the value to set.
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 * @param   Bytes is the number of bytes to set.
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 *
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 * @return  None.
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 *
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 * @note
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 *
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 * Signature: void XENV_MEM_FILL(void *DestPtr, char Data, unsigned Bytes)
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 *
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 *****************************************************************************/
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#define XENV_MEM_FILL(DestPtr, Data, Bytes)                       \
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{                                                                 \
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    char *Dest = (char*)(DestPtr);                                \
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    char c = (Data);                                              \
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    unsigned BytesLeft = (Bytes);                                 \
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                                                                  \
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    while (BytesLeft--) *Dest++ = c;                              \
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}
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/**
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 * A structure that contains a time stamp used by other time stamp macros
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 * defined below. This structure is processor dependent.
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 */
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typedef int XENV_TIME_STAMP;
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/*****************************************************************************/
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/**
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 *
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 * Time is derived from the 64 bit PPC timebase register
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 *
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 * @param   StampPtr is the storage for the retrieved time stamp.
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 *
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 * @return  None.
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 *
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 * @note
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 *
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 * Signature: void XENV_TIME_STAMP_GET(XTIME_STAMP *StampPtr)
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 * <br><br>
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 * This macro must be implemented by the user.
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 *
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 *****************************************************************************/
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#define XENV_TIME_STAMP_GET(StampPtr)
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/*****************************************************************************/
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/**
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 *
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 * This macro is not yet implemented and always returns 0.
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 *
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 * @param   Stamp1Ptr is the first sampled time stamp.
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 * @param   Stamp2Ptr is the second sampled time stamp.
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 *
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 * @return  0
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 *
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 * @note
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 *
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 * This macro must be implemented by the user.
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 *
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 *****************************************************************************/
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#define XENV_TIME_STAMP_DELTA_US(Stamp1Ptr, Stamp2Ptr)     (0)
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/*****************************************************************************/
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/**
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 *
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 * This macro is not yet implemented and always returns 0.
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 *
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 * @param   Stamp1Ptr is the first sampled time stamp.
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 * @param   Stamp2Ptr is the second sampled time stamp.
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 *
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 * @return  0
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 *
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 * @note
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 *
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 * This macro must be implemented by the user.
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 *
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 *****************************************************************************/
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#define XENV_TIME_STAMP_DELTA_MS(Stamp1Ptr, Stamp2Ptr)     (0)
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/*****************************************************************************/
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/**
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 *
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 * XENV_USLEEP(unsigned delay)
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 *
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 * Delay the specified number of microseconds. Not implemented without OS
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 * support.
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 *
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 * @param   delay is the number of microseconds to delay.
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 *
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 * @return  None.
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 *
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 * @note    None.
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 *
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 *****************************************************************************/
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#define XENV_USLEEP(delay)
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#endif            /* end of protection macro */
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