ap                 44 printf.c         uint *ap;
ap                 47 printf.c         ap = (uint*)(void*)&fmt + 1;
ap                 58 printf.c               printint(fd, *ap, 10, 1);
ap                 59 printf.c               ap++;
ap                 61 printf.c               printint(fd, *ap, 16, 0);
ap                 62 printf.c               ap++;
ap                 64 printf.c               s = (char*)*ap;
ap                 65 printf.c               ap++;
ap                 73 printf.c               putc(fd, *ap);
ap                 74 printf.c               ap++;
ap                 25 umalloc.c      free(void *ap)
ap                 29 umalloc.c        bp = (Header*)ap - 1;