Avoid errors when loading a cert multiple times.

[openssl.git] / crypto / armcap.c

diff --git a/crypto/armcap.c b/crypto/armcap.c
index 4215766bf449fce2098b291957954b8f376875f2..1f4e31f3f7cba52e75045b7b53acc0eb599d9850 100644 (file)
--- a/crypto/armcap.c
+++ b/crypto/armcap.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2011-2017 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
@@ -13,6 +13,7 @@
 #include <setjmp.h>
 #include <signal.h>
 #include <openssl/crypto.h>
+#include <internal/cryptlib.h>
 
 #include "arm_arch.h"
 
@@ -69,7 +70,7 @@ static unsigned long (*getauxval) (unsigned long) = NULL;
 # endif
 
 /*
- * ARM puts the the feature bits for Crypto Extensions in AT_HWCAP2, whereas
+ * ARM puts the feature bits for Crypto Extensions in AT_HWCAP2, whereas
  * AArch64 used AT_HWCAP.
  */
 # if defined(__arm__) || defined (__arm)
@@ -111,6 +112,24 @@ void OPENSSL_cpuid_setup(void)
         return;
     }
 
+# if defined(__APPLE__) && !defined(__aarch64__)
+    /*
+     * Capability probing by catching SIGILL appears to be problematic
+     * on iOS. But since Apple universe is "monocultural", it's actually
+     * possible to simply set pre-defined processor capability mask.
+     */
+    if (1) {
+        OPENSSL_armcap_P = ARMV7_NEON;
+        return;
+    }
+    /*
+     * One could do same even for __aarch64__ iOS builds. It's not done
+     * exclusively for reasons of keeping code unified across platforms.
+     * Unified code works because it never triggers SIGILL on Apple
+     * devices...
+     */
+# endif
+
     sigfillset(&all_masked);
     sigdelset(&all_masked, SIGILL);
     sigdelset(&all_masked, SIGTRAP);