stackpos
static void findentry(struct stackpos *, void (*)(const char *, ...));
static void findregs(struct stackpos *, db_addr_t);
static int nextframe(struct stackpos *, struct pcb *, int,
static void stacktop(db_regs_t *, struct stackpos *,
stacktop(db_regs_t *regs, struct stackpos *sp, void (*pr)(const char *, ...))
nextframe(struct stackpos *sp, struct pcb *pcb, int kerneltrace,
findentry(struct stackpos *sp, void (*pr)(const char *, ...))
findregs(struct stackpos *sp, db_addr_t addr)
struct stackpos pos;