ucontext
ldma_sigusr_handler(int sig, siginfo_t *sinfo, void *ucontext)
ucontext_t *ucontext = arg;
(sigfpe_handlers[i])(sig, siginfo, ucontext);
(ieee_handlers[(int)exception])(sig, siginfo, ucontext);
sp->pr_oldcontext = (struct ucontext *)lwp->lwp_oldcontext;
struct ucontext;
extern int fpu_signal_copyin(struct _klwp *, struct ucontext *);
struct ucontext *pr_oldcontext; /* Address of previous ucontext */
typedef struct ucontext ucontext_t;
ucp->uc_link = (struct ucontext *)lwp->lwp_oldcontext;
struct ucontext;
extern void xregs_clrptr(struct _klwp *, struct ucontext *);
extern int xregs_hasptr(struct _klwp *, struct ucontext *);
extern caddr_t xregs_getptr(struct _klwp *, struct ucontext *);
extern void xregs_setptr(struct _klwp *, struct ucontext *, caddr_t);
struct ucontext *pr_oldcontext; /* Address of previous ucontext */
typedef struct ucontext ucontext_t;