i86/mtx-16-bit/mtx/samples/LAB5_FS/int.c

   1 int color = 0x000A;
   2
   3 int kmode()
   4 {
   5   body();
   6 }
   7
   8
   9 int do_ps()
  10 {
  11   // YOUR do_ps code
  12 }
  13
  14 int chname(y) char * y;
  15 {
  16    // YOUR chname code
  17 }
  18
  19 int kcinth()
  20 {
  21    u16 seg, off;
  22    u32 position;
  23    u16 x, y, z, w, ww;
  24    int r;
  25
  26    seg = running->uss; off = running->usp;
  27    x = get_word(seg, off + 2*13);
  28    y = get_word(seg, off + 2*14);
  29    z = get_word(seg, off + 2*15);
  30    w = get_word(seg, off + 2*16);
  31    ww= get_word(seg, off + 2*17);
  32
  33    switch(x){
  34        case 0 : r = running->pid;     break;
  35        case 1 : r = do_ps();          break;
  36        case 2 : r = chname(y);        break;
  37        case 3 : r = kmode();          break;
  38        case 4 : r = tswitch();        break;
  39        case 5 : r = do_wait(y);       break;
  40        case 6 : do_exit(y);           break;
  41
  42        case 7 : r = ufork();          break;
  43        case 8 : r = exec(y);          break;
  44
  45
  46        case 10: r = kputc(y);         break;
  47        case 11: r = kgetc();          break;
  48
  49        case 21: r =  kmkdir(y,z);     break;
  50        case 22: r =  krmdir(y,z);     break;
  51        case 23: r =  kcreat(y,z);     break;
  52        case 24: r =  krm(y,z);        break;
  53
  54        case 25: r =  kchdir(y,z);     break;
  55        case 26: r =  kgetcwd(y,z);    break;
  56        case 27: r =  kstat(y,z);      break;
  57
  58        case 28: r =  kopen(y,z);      break;
  59        case 29: r =  kclose(y,z);     break;
  60
  61        case 30: r =  kread(y,z,w);    break;
  62        case 31: r =  kwrite(y,z,w);   break;
  63
  64        case 32: position = w;
  65                 position = position << 16;
  66                 position += z;
  67                 r =  mylseek(y,position,ww);  break;
  68
  69        case 33: r =  kchmod(y,z);     break;
  70        case 34: r =  kchown(y,z);     break;
  71
  72        case 35: r =  kdup(y,z);       break;
  73        case 36: r =  kdup2(y,z);      break;
  74
  75        case 99: do_exit(y);           break;
  76
  77        default: printf("invalid syscall # : %d\n", x);
  78                 break;
  79    }
  80    put_word(r, seg, off + 2*8);
  81 }