board/MAI/bios_emulator/scitech/src/pm/tests/mouse.c

   1 /****************************************************************************
   2 *
   3 *                   SciTech OS Portability Manager Library
   4 *
   5 *  ========================================================================
   6 *
   7 *    The contents of this file are subject to the SciTech MGL Public
   8 *    License Version 1.0 (the "License"); you may not use this file
   9 *    except in compliance with the License. You may obtain a copy of
  10 *    the License at http://www.scitechsoft.com/mgl-license.txt
  11 *
  12 *    Software distributed under the License is distributed on an
  13 *    "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  14 *    implied. See the License for the specific language governing
  15 *    rights and limitations under the License.
  16 *
  17 *    The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
  18 *
  19 *    The Initial Developer of the Original Code is SciTech Software, Inc.
  20 *    All Rights Reserved.
  21 *
  22 *  ========================================================================
  23 *
  24 *
  25 * Language:     ANSI C
  26 * Environment:  any
  27 *
  28 * Description:  Test program to check the ability to install an assembly
  29 *               language mouse interrupt handler. We use assembly language
  30 *               as it must be a far function and should swap to a local
  31 *               32 bit stack if it is going to call any C based code (which
  32 *               we do in this example).
  33 *
  34 *               Functions tested:   PM_installMouseHandler()
  35 *                                   PM_int86()
  36 *
  37 *
  38 ****************************************************************************/
  39
  40 #include <stdlib.h>
  41 #include <stdio.h>
  42 #include "pmapi.h"
  43
  44 volatile long count = 0;
  45
  46 #pragma off (check_stack)           /* No stack checking under Watcom   */
  47
  48 void PMAPI mouseHandler(
  49     uint mask,
  50     uint butstate,
  51     int x,
  52     int y,
  53     int mickeyX,
  54     int mickeyY)
  55 {
  56     mask = mask;                /* We dont use any of the parameters    */
  57     butstate = butstate;
  58     x = x;
  59     y = y;
  60     mickeyX = mickeyX;
  61     mickeyY = mickeyY;
  62     count++;
  63 }
  64
  65 int main(void)
  66 {
  67     RMREGS          regs;
  68     PM_lockHandle   lh;
  69
  70     printf("Program running in ");
  71     switch (PM_getModeType()) {
  72         case PM_realMode:
  73             printf("real mode.\n\n");
  74             break;
  75         case PM_286:
  76             printf("16 bit protected mode.\n\n");
  77             break;
  78         case PM_386:
  79             printf("32 bit protected mode.\n\n");
  80             break;
  81         }
  82
  83     regs.x.ax = 33;     /* Mouse function 33 - Software reset       */
  84     PM_int86(0x33,&regs,&regs);
  85     if (regs.x.bx == 0) {
  86         printf("No mouse installed.\n");
  87         exit(1);
  88         }
  89
  90     /* Install our mouse handler and lock handler pages in memory. It is
  91      * difficult to get the size of a function in C, but we know our
  92      * function is well less than 100 bytes (and an entire 4k page will
  93      * need to be locked by the server anyway).
  94      */
  95     PM_lockCodePages((__codePtr)mouseHandler,100,&lh);
  96     PM_lockDataPages((void*)&count,sizeof(count),&lh);
  97     if (!PM_setMouseHandler(0xFFFF, mouseHandler)) {
  98         printf("Unable to install mouse handler!\n");
  99         exit(1);
 100         }
 101     printf("Mouse handler installed - Hit any key to exit\n");
 102     PM_getch();
 103
 104     PM_restoreMouseHandler();
 105     PM_unlockDataPages((void*)&count,sizeof(count),&lh);
 106     PM_unlockCodePages((__codePtr)mouseHandler,100,&lh);
 107     printf("Mouse handler was called %ld times\n", count);
 108     return 0;
 109 }