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MSVC AES-NI support

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This commit is contained in:
Jack Andersen
2015-07-13 14:38:16 -10:00
parent 01f269e8e2
commit 83f29da294
2 changed files with 16 additions and 7 deletions
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10
lib/aes.cpp
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@@ -478,7 +478,7 @@ void SoftwareAES::encrypt(const uint8_t* iv, const uint8_t* inbuf, uint8_t* outb
}
}
#if __AES__
#if __AES__ || _MSC_VER >= 1800
#include <wmmintrin.h>
@@ -598,12 +598,18 @@ public:
static int HAS_AES_NI = -1;
std::unique_ptr<IAES> NewAES()
{
#if __AES__
#if __AES__ || _MSC_VER >= 1800
if (HAS_AES_NI == -1)
{
#if _MSC_VER
int info[4];
__cpuid(info, 1);
HAS_AES_NI = ((info[2] & 0x2000000) != 0);
#else
unsigned int a,b,c,d;
__cpuid(1, a,b,c,d);
HAS_AES_NI = ((c & 0x2000000) != 0);
#endif
}
if (HAS_AES_NI)
return std::unique_ptr<IAES>(new NiAES);