board/MAI/bios_emulator/scitech/src/common/aaqnx.c

   1 /****************************************************************************
   2 *
   3 *                   SciTech Nucleus Graphics Architecture
   4 *
   5 *               Copyright (C) 1991-1998 SciTech Software, Inc.
   6 *                            All rights reserved.
   7 *
   8 *  ======================================================================
   9 *  |REMOVAL OR MODIFICATION OF THIS HEADER IS STRICTLY PROHIBITED BY LAW|
  10 *  |                                                                    |
  11 *  |This copyrighted computer code contains proprietary technology      |
  12 *  |owned by SciTech Software, Inc., located at 505 Wall Street,        |
  13 *  |Chico, CA 95928 USA (http://www.scitechsoft.com).                   |
  14 *  |                                                                    |
  15 *  |The contents of this file are subject to the SciTech Nucleus        |
  16 *  |License; you may *not* use this file or related software except in  |
  17 *  |compliance with the License. You may obtain a copy of the License   |
  18 *  |at http://www.scitechsoft.com/nucleus-license.txt                   |
  19 *  |                                                                    |
  20 *  |Software distributed under the License is distributed on an         |
  21 *  |"AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or      |
  22 *  |implied. See the License for the specific language governing        |
  23 *  |rights and limitations under the License.                           |
  24 *  |                                                                    |
  25 *  |REMOVAL OR MODIFICATION OF THIS HEADER IS STRICTLY PROHIBITED BY LAW|
  26 *  ======================================================================
  27 *
  28 * Language:     ANSI C
  29 * Environment:  QNX
  30 *
  31 * Description:  OS specific Nucleus Graphics Architecture services for
  32 *               the QNX operating system.
  33 *
  34 ****************************************************************************/
  35
  36 #include "nucleus/graphics.h"
  37 #include <time.h>
  38
  39 /*---------------------------- Global Variables ---------------------------*/
  40
  41 static ibool        haveRDTSC;
  42
  43 /*-------------------------- Implementation -------------------------------*/
  44
  45 /****************************************************************************
  46 REMARKS:
  47 Nothing special for this OS.
  48 ****************************************************************************/
  49 GA_sharedInfo * NAPI GA_getSharedInfo(
  50     int device)
  51 {
  52     (void)device;
  53     return NULL;
  54 }
  55
  56 /****************************************************************************
  57 REMARKS:
  58 Nothing special for this OS.
  59 ****************************************************************************/
  60 ibool NAPI GA_getSharedExports(
  61     GA_exports *gaExp)
  62 {
  63     (void)gaExp;
  64     return false;
  65 }
  66
  67 /****************************************************************************
  68 REMARKS:
  69 This function initialises the high precision timing functions for the
  70 Nucleus loader library.
  71 ****************************************************************************/
  72 ibool NAPI GA_TimerInit(void)
  73 {
  74     if (_GA_haveCPUID() && (_GA_getCPUIDFeatures() & CPU_HaveRDTSC) != 0)
  75         haveRDTSC = true;
  76     return true;
  77 }
  78
  79 /****************************************************************************
  80 REMARKS:
  81 This function reads the high resolution timer.
  82 ****************************************************************************/
  83 void NAPI GA_TimerRead(
  84     GA_largeInteger *value)
  85 {
  86     if (haveRDTSC)
  87         _GA_readTimeStamp(value);
  88     else {
  89         struct timespec ts;
  90
  91         clock_gettime(CLOCK_REALTIME, &ts);
  92         value->low = (ts.tv_nsec / 1000 + ts.tv_sec * 1000000);
  93         value->high = 0;
  94         }
  95 }