newlib/libc/sys/h8500hms/crt0.c

   1
   2 extern char _start_bss;
   3 extern char end;
   4 extern char stack;
   5
   6 static zeroandrun();
   7 #pragma noprolog
   8
   9 start()
  10 {
  11   asm("mov.w #%off(_stack),sp");
  12 /*  asm("ldc.w  #0x700,sr");*/
  13   asm("ldc.b  #%page(_stack),tp");
  14   asm("ldc.b  #%page(_stack),dp");
  15   asm("ldc.b  #%page(_stack),ep");
  16   /* Can't have anything else in here, since the fp won't be set up
  17      so local variables won't work */
  18   zeroandrun();
  19 }
  20
  21 static
  22 zeroandrun()
  23 {
  24   char *p;
  25   p = &_start_bss;
  26   while (p < &end)
  27     {
  28       *p++ = 0;
  29     }
  30   main();
  31   _exit();
  32 }