| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859 |
- /* ===================================================================
- *
- * Copyright (c) 2014, Legrandin <helderijs@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- * ===================================================================
- */
- #include "pycrypto_common.h"
- FAKE_INIT(cpuid)
- #if defined HAVE_CPUID_H
- #include <cpuid.h>
- #elif defined HAVE_INTRIN_H
- #include <intrin.h>
- #endif
- /** Return 1 if the CPU supports the AESNI extension **/
- EXPORT_SYM int have_aes_ni(void)
- {
- uint32_t info[4];
- memset(info, 0, sizeof info);
-
- /* Call cpuid to retrieve x86 Processor Info and Feature bits.
- * info[2] is ecx. If bit 25 is set, the CPU supports the
- * AES-NI extension. */
- #if defined HAVE_CPUID_H
- __get_cpuid(1, info, info+1, info+2, info+3);
- #elif defined HAVE_INTRIN_H
- __cpuidex(info, 1, 0);
- #endif
- return (info[2] & ((int)1<<25)) ? 1 : 0;
- }
|