test/cofftest.c

   1 /*
   2  * test source file for assembling to COFF
   3  * build with (under DJGPP, for example):
   4  *    nasm -f coff cofftest.asm
   5  *    gcc -o cofftest cofftest.c cofftest.o
   6  */
   7
   8 #include <stdio.h>
   9
  10 extern int lrotate(int32_t, int);
  11 extern void greet(void);
  12 extern int8_t asmstr[];
  13 extern void *selfptr;
  14 extern void *textptr;
  15 extern int integer, commvar;
  16
  17 int main(void)
  18 {
  19
  20     printf("Testing lrotate: should get 0x00400000, 0x00000001\n");
  21     printf("lrotate(0x00040000, 4) = 0x%08lx\n", lrotate(0x40000, 4));
  22     printf("lrotate(0x00040000, 14) = 0x%08lx\n", lrotate(0x40000, 14));
  23
  24     printf("This string should read `hello, world': `%s'\n", asmstr);
  25
  26     printf("The integers here should be 1234, 1235 and 4321:\n");
  27     integer = 1234;
  28     commvar = 4321;
  29     greet();
  30
  31     printf("These pointers should be equal: %p and %p\n", &greet, textptr);
  32
  33     printf("So should these: %p and %p\n", selfptr, &selfptr);
  34 }