OpenSSL 1.1.1-pre2

crypto/s390xcap.c

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2010-2017 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
@@ -12,8 +12,8 @@
 #include <string.h>
 #include <setjmp.h>
 #include <signal.h>
-
-unsigned long long OPENSSL_s390xcap_P[10];
+#include "internal/cryptlib.h"
+#include "s390x_arch.h"
 
 static sigjmp_buf ill_jmp;
 static void ill_handler(int sig)
@@ -21,30 +21,47 @@ static void ill_handler(int sig)
     siglongjmp(ill_jmp, sig);
 }
 
-unsigned long OPENSSL_s390x_facilities(void);
+void OPENSSL_s390x_facilities(void);
+void OPENSSL_vx_probe(void);
+
+struct OPENSSL_s390xcap_st OPENSSL_s390xcap_P;
 
 void OPENSSL_cpuid_setup(void)
 {
     sigset_t oset;
     struct sigaction ill_act, oact;
 
-    if (OPENSSL_s390xcap_P[0])
+    if (OPENSSL_s390xcap_P.stfle[0])
         return;
 
-    OPENSSL_s390xcap_P[0] = 1UL << (8 * sizeof(unsigned long) - 1);
+    /* set a bit that will not be tested later */
+    OPENSSL_s390xcap_P.stfle[0] |= S390X_CAPBIT(0);
 
     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, SIGFPE);
     sigdelset(&ill_act.sa_mask, SIGTRAP);
     sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
     sigaction(SIGILL, &ill_act, &oact);
+    sigaction(SIGFPE, &ill_act, &oact);
 
     /* protection against missing store-facility-list-extended */
     if (sigsetjmp(ill_jmp, 1) == 0)
         OPENSSL_s390x_facilities();
 
+    /* protection against disabled vector facility */
+    if ((OPENSSL_s390xcap_P.stfle[2] & S390X_CAPBIT(S390X_VX))
+        && (sigsetjmp(ill_jmp, 1) == 0)) {
+        OPENSSL_vx_probe();
+    } else {
+        OPENSSL_s390xcap_P.stfle[2] &= ~(S390X_CAPBIT(S390X_VX)
+                                         | S390X_CAPBIT(S390X_VXD)
+                                         | S390X_CAPBIT(S390X_VXE));
+    }
+
+    sigaction(SIGFPE, &oact, NULL);
     sigaction(SIGILL, &oact, NULL);
     sigprocmask(SIG_SETMASK, &oset, NULL);
 }