test/objlink.c

   1 /*
   2  * test source file for assembling to Microsoft 16-bit .OBJ
   3  * build with (16-bit Microsoft C):
   4  *    nasm -f obj objtest.asm
   5  *    cl /AL objtest.obj objlink.c
   6  * other compilers should work too, provided they handle large
   7  * model in the same way as MS C
   8  */
   9
  10 #include <stdio.h>
  11
  12 int8_t text[] = "hello, world\n";
  13
  14 extern void function(int8_t *);
  15 extern int bsssym, commvar;
  16 extern void *selfptr;
  17 extern void *selfptr2;
  18
  19 int main(void)
  20 {
  21     printf("these should be identical: %p, %p\n",
  22            (int32_t)selfptr, (int32_t)&selfptr);
  23     printf("these should be equivalent but different: %p, %p\n",
  24            (int32_t)selfptr2, (int32_t)&selfptr2);
  25     printf("you should see \"hello, world\" twice:\n");
  26     bsssym = 0xF00D;
  27     commvar = 0xD00F;
  28     function(text);
  29     printf("this should be 0xF00E: 0x%X\n", bsssym);
  30     printf("this should be 0xD00E: 0x%X\n", commvar);
  31     return 0;
  32 }