util/romcc/tests/simple_test32.c

   1 void main(void)
   2 {
   3         unsigned long addr, start, stop;
   4         start = 0x00100000;
   5         stop = 0x00180000;
   6
   7
   8         for(addr = start; addr < stop ;) {
   9                 unsigned char ch;
  10                 const char *str = "\r";
  11                 while((ch = *str++) != '\0') {
  12                         while(__builtin_inb(0x3f))
  13                                 ;
  14                         __builtin_outb(ch, 0x3f8);
  15
  16                         while(__builtin_inb(0x3f))
  17                                 ;
  18                 }
  19                 asm (
  20                         "jmp 2f\n\t"
  21                         "1:\n\t"
  22                         "testl  $0xffff, %0\n\t"
  23                         "jz     3f\n\t"
  24                         "movnti %0, (%0)\n\t"
  25                         "add $4, %0\n\t"
  26                         "2:\n\t"
  27                         "cmp %2, %0\n\t"
  28                         "jl 1b\n\t"
  29                         "3:\n\t"
  30                         : "=b" (addr)              /* outputs */
  31                         : "0" (addr), "r" (stop)   /* intputs */
  32                         : /* clobbers */
  33                         );
  34         };
  35 }