payloads/libpayload/curses/PDCurses/dos/pdcutil.c

   1 /* Public Domain Curses */
   2
   3 #include "pdcdos.h"
   4
   5 RCSID("$Id: pdcutil.c,v 1.24 2008/07/13 16:08:17 wmcbrine Exp $")
   6
   7 void PDC_beep(void)
   8 {
   9     PDCREGS regs;
  10
  11     PDC_LOG(("PDC_beep() - called\n"));
  12
  13     regs.W.ax = 0x0e07;       /* Write ^G in TTY fashion */
  14     regs.W.bx = 0;
  15     PDCINT(0x10, regs);
  16 }
  17
  18 void PDC_napms(int ms)
  19 {
  20     PDCREGS regs;
  21     long goal, start, current;
  22
  23     PDC_LOG(("PDC_napms() - called: ms=%d\n", ms));
  24
  25     goal = DIVROUND((long)ms, 50);
  26     if (!goal)
  27         goal++;
  28
  29     start = getdosmemdword(0x46c);
  30
  31     goal += start;
  32
  33     while (goal > (current = getdosmemdword(0x46c)))
  34     {
  35         if (current < start)    /* in case of midnight reset */
  36             return;
  37
  38         regs.W.ax = 0x1680;
  39         PDCINT(0x2f, regs);
  40         PDCINT(0x28, regs);
  41     }
  42 }
  43
  44 const char *PDC_sysname(void)
  45 {
  46     return "DOS";
  47 }
  48
  49 #ifdef __DJGPP__
  50
  51 unsigned char getdosmembyte(int offset)
  52 {
  53     unsigned char b;
  54
  55     dosmemget(offset, sizeof(unsigned char), &b);
  56     return b;
  57 }
  58
  59 unsigned short getdosmemword(int offset)
  60 {
  61     unsigned short w;
  62
  63     dosmemget(offset, sizeof(unsigned short), &w);
  64     return w;
  65 }
  66
  67 unsigned long getdosmemdword(int offset)
  68 {
  69     unsigned long dw;
  70
  71     dosmemget(offset, sizeof(unsigned long), &dw);
  72     return dw;
  73 }
  74
  75 void setdosmembyte(int offset, unsigned char b)
  76 {
  77     dosmemput(&b, sizeof(unsigned char), offset);
  78 }
  79
  80 void setdosmemword(int offset, unsigned short w)
  81 {
  82     dosmemput(&w, sizeof(unsigned short), offset);
  83 }
  84
  85 #endif
  86
  87 #if defined(__WATCOMC__) && defined(__386__)
  88
  89 void PDC_dpmi_int(int vector, pdc_dpmi_regs *rmregs)
  90 {
  91     union REGPACK regs = {0};
  92
  93     rmregs->w.ss = 0;
  94     rmregs->w.sp = 0;
  95     rmregs->w.flags = 0;
  96
  97     regs.w.ax = 0x300;
  98     regs.h.bl = vector;
  99     regs.x.edi = FP_OFF(rmregs);
 100     regs.x.es = FP_SEG(rmregs);
 101
 102     intr(0x31, &regs);
 103 }
 104
 105 #endif