1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <setjmp.h>
5#include <signal.h>
6
7extern unsigned long OPENSSL_s390xcap_P;
8
9static sigjmp_buf ill_jmp;
10static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
11
12unsigned long OPENSSL_s390x_facilities(void);
13
14void OPENSSL_cpuid_setup(void)
15	{
16	sigset_t oset;
17	struct sigaction ill_act,oact;
18
19	if (OPENSSL_s390xcap_P) return;
20
21	memset(&ill_act,0,sizeof(ill_act));
22	ill_act.sa_handler = ill_handler;
23	sigfillset(&ill_act.sa_mask);
24	sigdelset(&ill_act.sa_mask,SIGILL);
25	sigdelset(&ill_act.sa_mask,SIGTRAP);
26	sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
27	sigaction (SIGILL,&ill_act,&oact);
28
29	/* protection against missing store-facility-list-extended */
30	if (sigsetjmp(ill_jmp,0) == 0)
31		OPENSSL_s390xcap_P = OPENSSL_s390x_facilities();
32	else
33		OPENSSL_s390xcap_P = 1UL<<63;
34
35	sigaction (SIGILL,&oact,NULL);
36	sigprocmask(SIG_SETMASK,&oset,NULL);
37	}
38