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