+enum siginfo_layout siginfo_layout(int sig, int si_code)
+{
+ enum siginfo_layout layout = SIL_KILL;
+ if ((si_code > SI_USER) && (si_code < SI_KERNEL)) {
+ static const struct {
+ unsigned char limit, layout;
+ } filter[] = {
+ [SIGILL] = { NSIGILL, SIL_FAULT },
+ [SIGFPE] = { NSIGFPE, SIL_FAULT },
+ [SIGSEGV] = { NSIGSEGV, SIL_FAULT },
+ [SIGBUS] = { NSIGBUS, SIL_FAULT },
+ [SIGTRAP] = { NSIGTRAP, SIL_FAULT },
+#if defined(SIGMET) && defined(NSIGEMT)
+ [SIGEMT] = { NSIGEMT, SIL_FAULT },
+#endif
+ [SIGCHLD] = { NSIGCHLD, SIL_CHLD },
+ [SIGPOLL] = { NSIGPOLL, SIL_POLL },
+#ifdef __ARCH_SIGSYS
+ [SIGSYS] = { NSIGSYS, SIL_SYS },
+#endif
+ };
+ if ((sig < ARRAY_SIZE(filter)) && (si_code <= filter[sig].limit))
+ layout = filter[sig].layout;
+ else if (si_code <= NSIGPOLL)
+ layout = SIL_POLL;
+ } else {
+ if (si_code == SI_TIMER)
+ layout = SIL_TIMER;
+ else if (si_code == SI_SIGIO)
+ layout = SIL_POLL;
+ else if (si_code < 0)
+ layout = SIL_RT;
+ /* Tests to support buggy kernel ABIs */
+#ifdef TRAP_FIXME
+ if ((sig == SIGTRAP) && (si_code == TRAP_FIXME))
+ layout = SIL_FAULT;
+#endif
+#ifdef FPE_FIXME
+ if ((sig == SIGFPE) && (si_code == FPE_FIXME))
+ layout = SIL_FAULT;
+#endif
+ }
+ return layout;
+}
+