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);
+}