Add files for (upcoming) AES-NI support
diff --git a/library/aesni.c b/library/aesni.c
new file mode 100644
index 0000000..2882298
--- /dev/null
+++ b/library/aesni.c
@@ -0,0 +1,61 @@
+/*
+ * AES-NI support functions
+ *
+ * Copyright (C) 2013, Brainspark B.V.
+ *
+ * This file is part of PolarSSL (http://www.polarssl.org)
+ * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/*
+ * [AES-WP] http://software.intel.com/en-us/articles/intel-advanced-encryption-standard-aes-instructions-set
+ */
+
+#include "polarssl/config.h"
+
+#if defined(POLARSSL_AESNI_C)
+
+#include "polarssl/aesni.h"
+
+#if defined(POLARSSL_HAVE_X86_64)
+
+/*
+ * AES-NI support detection routine, [AES-WP] figure 23
+ */
+int aesni_supported( void )
+{
+ static int supported = -1;
+ unsigned int c;
+
+ if( supported == -1 )
+ {
+ asm( "movl $1, %%eax \n"
+ "cpuid \n"
+ : "=c" (c)
+ :
+ : "eax", "ebx", "edx" );
+ supported = ( ( c & 0x02000000 ) != 0 );
+ }
+
+ return( supported );
+}
+
+#endif /* POLARSSL_HAVE_X86_64 */
+
+#endif /* POLARSSL_AESNI_C */