sendsig
if (sendsig(sctx->sig_action, signum, returnmask, &si,
if (sendsig(ctx.sig_action, signum, p->p_sigmask, &si,
goto sendsig;
sendsig:
goto sendsig; /* in PT_DETACH, above. */
goto sendsig;
int sendsig(sig_t _catcher, int _sig, sigset_t _mask, const siginfo_t *_si,