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author | Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org> | 2021-04-30 00:33:56 +0200 |
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committer | Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org> | 2021-04-30 00:33:56 +0200 |
commit | aa4d426b4d3527d7e166df1a05058c9a4a0f6683 (patch) | |
tree | 4ff17ce8b89a2321b9d0ed4bcfc37c447bcb6820 /openssl-1.1.0h/crypto/s390xcap.c | |
download | smtps-and-pop3s-console-program-aa4d426b4d3527d7e166df1a05058c9a4a0f6683.tar.gz smtps-and-pop3s-console-program-aa4d426b4d3527d7e166df1a05058c9a4a0f6683.zip |
Diffstat (limited to 'openssl-1.1.0h/crypto/s390xcap.c')
-rw-r--r-- | openssl-1.1.0h/crypto/s390xcap.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/s390xcap.c b/openssl-1.1.0h/crypto/s390xcap.c new file mode 100644 index 0000000..272c551 --- /dev/null +++ b/openssl-1.1.0h/crypto/s390xcap.c @@ -0,0 +1,50 @@ +/* + * Copyright 2010-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <setjmp.h> +#include <signal.h> + +unsigned long long OPENSSL_s390xcap_P[10]; + +static sigjmp_buf ill_jmp; +static void ill_handler(int sig) +{ + siglongjmp(ill_jmp, sig); +} + +unsigned long OPENSSL_s390x_facilities(void); + +void OPENSSL_cpuid_setup(void) +{ + sigset_t oset; + struct sigaction ill_act, oact; + + if (OPENSSL_s390xcap_P[0]) + return; + + OPENSSL_s390xcap_P[0] = 1UL << (8 * sizeof(unsigned long) - 1); + + memset(&ill_act, 0, sizeof(ill_act)); + ill_act.sa_handler = ill_handler; + sigfillset(&ill_act.sa_mask); + sigdelset(&ill_act.sa_mask, SIGILL); + sigdelset(&ill_act.sa_mask, SIGTRAP); + sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset); + sigaction(SIGILL, &ill_act, &oact); + + /* protection against missing store-facility-list-extended */ + if (sigsetjmp(ill_jmp, 1) == 0) + OPENSSL_s390x_facilities(); + + sigaction(SIGILL, &oact, NULL); + sigprocmask(SIG_SETMASK, &oset, NULL); +} |