#include <lib.h>

#define sigfillset _sigfillset

#define sigprocmask _sigprocmask

#define sigreturn _sigreturn

#include <sys/sigcontext.h>

#include <signal.h>

PUBLIC int sigreturn(scp)

register struct sigcontext *scp;

{

sigset_t set;

/* The message can't be on the stack, because the stack will vanish out

* from under us. The send part of sendrec will succeed, but when

* a message is sent to restart the current process, who knows what will

* be in the place formerly occupied by the message?

*/

static message m;

/* Protect against race conditions by blocking all interrupts. */

sigfillset(&set); /* splhi */

sigprocmask(SIG_SETMASK, &set, (sigset_t *) NULL);

m.m2_l1 = scp->sc_mask;

m.m2_i2 = scp->sc_flags;

m.m2_p1 = (char *) scp;

return(_syscall(MM, SIGRETURN, &m)); /* normally this doesn't return */

}