__vaddr_t
__vaddr_t md_bpva;
typedef __vaddr_t vaddr_t;
__vaddr_t ld_base;
typedef __vaddr_t vaddr_t;
__vaddr_t md_ss_addr; /* single step address for ptrace */
void (*md_syscall)(struct lwp *, u_int, u_int, __vaddr_t);
typedef __vaddr_t vaddr_t;