2 * Copyright 2010-2022 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
15 #include "internal/cryptlib.h"
16 #include "s390x_arch.h"
18 static sigjmp_buf ill_jmp;
19 static void ill_handler(int sig)
21 siglongjmp(ill_jmp, sig);
24 void OPENSSL_s390x_facilities(void);
25 void OPENSSL_vx_probe(void);
27 struct OPENSSL_s390xcap_st OPENSSL_s390xcap_P;
29 #if defined(__GNUC__) && defined(__linux)
30 __attribute__ ((visibility("hidden")))
32 void OPENSSL_cpuid_setup(void)
35 struct sigaction ill_act, oact_ill, oact_fpe;
37 if (OPENSSL_s390xcap_P.stfle[0])
40 /* set a bit that will not be tested later */
41 OPENSSL_s390xcap_P.stfle[0] |= S390X_CAPBIT(0);
43 memset(&ill_act, 0, sizeof(ill_act));
44 ill_act.sa_handler = ill_handler;
45 sigfillset(&ill_act.sa_mask);
46 sigdelset(&ill_act.sa_mask, SIGILL);
47 sigdelset(&ill_act.sa_mask, SIGFPE);
48 sigdelset(&ill_act.sa_mask, SIGTRAP);
49 sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
50 sigaction(SIGILL, &ill_act, &oact_ill);
51 sigaction(SIGFPE, &ill_act, &oact_fpe);
53 /* protection against missing store-facility-list-extended */
54 if (sigsetjmp(ill_jmp, 1) == 0)
55 OPENSSL_s390x_facilities();
57 /* protection against disabled vector facility */
58 if ((OPENSSL_s390xcap_P.stfle[2] & S390X_CAPBIT(S390X_VX))
59 && (sigsetjmp(ill_jmp, 1) == 0)) {
62 OPENSSL_s390xcap_P.stfle[2] &= ~(S390X_CAPBIT(S390X_VX)
63 | S390X_CAPBIT(S390X_VXD)
64 | S390X_CAPBIT(S390X_VXE));
67 sigaction(SIGFPE, &oact_fpe, NULL);
68 sigaction(SIGILL, &oact_ill, NULL);
69 sigprocmask(SIG_SETMASK, &oset, NULL);