board/MAI/bios_emulator/scitech/src/pm/tests/altbrk.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 a C based
  29 *               control C/break interrupt handler. Note that this
  30 *               alternate version does not work with all extenders.
  31 *
  32 *               Functions tested:   PM_installAltBreakHandler()
  33 *                                   PM_restoreBreakHandler()
  34 *
  35 *
  36 ****************************************************************************/
  37
  38 #include <stdlib.h>
  39 #include <stdio.h>
  40 #include "pmapi.h"
  41
  42 volatile int breakHit = false;
  43 volatile int ctrlCHit = false;
  44
  45 #pragma off (check_stack)           /* No stack checking under Watcom   */
  46
  47 void PMAPI breakHandler(uint bHit)
  48 {
  49     if (bHit)
  50         breakHit = true;
  51     else
  52         ctrlCHit = true;
  53 }
  54
  55 int main(void)
  56 {
  57     printf("Program running in ");
  58     switch (PM_getModeType()) {
  59         case PM_realMode:
  60             printf("real mode.\n\n");
  61             break;
  62         case PM_286:
  63             printf("16 bit protected mode.\n\n");
  64             break;
  65         case PM_386:
  66             printf("32 bit protected mode.\n\n");
  67             break;
  68         }
  69
  70     PM_installAltBreakHandler(breakHandler);
  71     printf("Control C/Break interrupt handler installed\n");
  72     while (1) {
  73         if (ctrlCHit) {
  74             printf("Code termimated with Ctrl-C.\n");
  75             break;
  76             }
  77         if (breakHit) {
  78             printf("Code termimated with Ctrl-Break.\n");
  79             break;
  80             }
  81         if (PM_kbhit() && PM_getch() == 0x1B) {
  82             printf("No break code detected!\n");
  83             break;
  84             }
  85         printf("Hit Ctrl-C or Ctrl-Break to exit!\n");
  86         }
  87
  88     PM_restoreBreakHandler();
  89     return 0;
  90 }