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b1322259 RS |
1 | /* |
2 | * Copyright 2010-2016 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
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 | |
8 | */ | |
9 | ||
91fdacb2 AP |
10 | #include <stdio.h> |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | #include <setjmp.h> | |
14 | #include <signal.h> | |
c0dba2cc | 15 | #include "internal/cryptlib.h" |
91fdacb2 | 16 | |
90ba3a28 | 17 | extern unsigned long OPENSSL_s390xcap_P[]; |
91fdacb2 AP |
18 | |
19 | static sigjmp_buf ill_jmp; | |
0f113f3e MC |
20 | static void ill_handler(int sig) |
21 | { | |
22 | siglongjmp(ill_jmp, sig); | |
23 | } | |
91fdacb2 AP |
24 | |
25 | unsigned long OPENSSL_s390x_facilities(void); | |
26 | ||
27 | void OPENSSL_cpuid_setup(void) | |
0f113f3e MC |
28 | { |
29 | sigset_t oset; | |
30 | struct sigaction ill_act, oact; | |
31 | ||
32 | if (OPENSSL_s390xcap_P[0]) | |
33 | return; | |
34 | ||
35 | OPENSSL_s390xcap_P[0] = 1UL << (8 * sizeof(unsigned long) - 1); | |
36 | ||
37 | memset(&ill_act, 0, sizeof(ill_act)); | |
38 | ill_act.sa_handler = ill_handler; | |
39 | sigfillset(&ill_act.sa_mask); | |
40 | sigdelset(&ill_act.sa_mask, SIGILL); | |
41 | sigdelset(&ill_act.sa_mask, SIGTRAP); | |
42 | sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset); | |
43 | sigaction(SIGILL, &ill_act, &oact); | |
44 | ||
45 | /* protection against missing store-facility-list-extended */ | |
46 | if (sigsetjmp(ill_jmp, 1) == 0) | |
47 | OPENSSL_s390x_facilities(); | |
48 | ||
49 | sigaction(SIGILL, &oact, NULL); | |
50 | sigprocmask(SIG_SETMASK, &oset, NULL); | |
51 | } |