workloads/fill.c

   1 #define set_s7_0(x) IOSPACE[9] = (x)
   2 #define set_s7_1(x) IOSPACE[11] = (x)
   3 #define set_fbaddr0(x) IOSPACE[21] = (x)
   4
   5 register volatile int *IOSPACE asm("$233");
   6
   7 void putch(int ch)
   8 {
   9         while (IOSPACE[1])
  10                 ;
  11         IOSPACE[0] = ch;
  12 }
  13
  14 void puthex(unsigned v)
  15 {
  16         if (v >= 16) puthex(v >> 4);
  17         putch("0123456789abcdef"[v & 15]);
  18 }
  19
  20 int
  21 main()
  22 {
  23         IOSPACE = (int*) 0x1000000000000ULL;
  24         unsigned fbaddr0 = 0;
  25
  26         for (;;) {
  27                 puthex(fbaddr0);
  28                 putch('\r');
  29                 putch('\n');
  30                 set_fbaddr0(fbaddr0);
  31                 set_s7_0(fbaddr0);
  32                 set_s7_1(fbaddr0 >> 8);
  33                 fbaddr0 += 640 / 8;
  34         }
  35 }