From 03f41b6ceb6e9dcfbe4b134239431de43afd7e6b Mon Sep 17 00:00:00 2001
From: lloyd <lloyd@randombit.net>
Date: Fri, 25 Sep 2009 11:51:55 +0000
Subject: Add runtime cpuid support. Check in the SSE2 engine that SSE2 is
 actually existing on the current CPU before returning an object.

---
 src/engine/sse2_eng/eng_sse2.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/engine')

diff --git a/src/engine/sse2_eng/eng_sse2.cpp b/src/engine/sse2_eng/eng_sse2.cpp
index 9f68a070e..07c625c7c 100644
--- a/src/engine/sse2_eng/eng_sse2.cpp
+++ b/src/engine/sse2_eng/eng_sse2.cpp
@@ -6,6 +6,7 @@
 */
 
 #include <botan/eng_sse2.h>
+#include <botan/cpuid.h>
 
 #if defined(BOTAN_HAS_SHA1_SSE2)
   #include <botan/sha1_sse2.h>
@@ -21,6 +22,9 @@ BlockCipher*
 SSE2_Assembler_Engine::find_block_cipher(const SCAN_Name& request,
                                          Algorithm_Factory&) const
    {
+   if(!CPUID::has_sse2())
+      return 0;
+
 #if defined(BOTAN_HAS_SERPENT_SSE2)
    if(request.algo_name() == "Serpent")
       return new Serpent_SSE2;
@@ -33,6 +37,9 @@ HashFunction*
 SSE2_Assembler_Engine::find_hash(const SCAN_Name& request,
                                  Algorithm_Factory&) const
    {
+   if(!CPUID::has_sse2())
+      return 0;
+
 #if defined(BOTAN_HAS_SHA1_SSE2)
    if(request.algo_name() == "SHA-160")
       return new SHA_160_SSE2;
-- 
cgit v1.2.3