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/*
* 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);
}
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