From 546d6cff4447a56bbf7c0e1a8b6f89dba5d3183b Mon Sep 17 00:00:00 2001 From: Mounir IDRASSI Date: Fri, 23 Jun 2017 02:07:32 +0200 Subject: Crypto: Add optimized SHA-512 and SHA-256 assembly implementations for x86_64 and x86. This improves speed by 30%. --- src/Driver/DriveFilter.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/Driver/DriveFilter.c') diff --git a/src/Driver/DriveFilter.c b/src/Driver/DriveFilter.c index 8195fe35..d46bd92e 100644 --- a/src/Driver/DriveFilter.c +++ b/src/Driver/DriveFilter.c @@ -330,7 +330,7 @@ static void ComputeBootLoaderFingerprint(PDEVICE_OBJECT LowerDeviceObject, byte* #if !defined (_WIN64) KFLOATING_SAVE floatingPointState; NTSTATUS saveStatus = STATUS_SUCCESS; - if (HasISSE()) + if (HasISSE()|| (HasSSE2() && HasMMX())) saveStatus = KeSaveFloatingPointState (&floatingPointState); #endif WHIRLPOOL_add (ioBuffer, TC_BOOT_SECTOR_PIM_VALUE_OFFSET, &whirlpool); @@ -368,7 +368,7 @@ static void ComputeBootLoaderFingerprint(PDEVICE_OBJECT LowerDeviceObject, byte* } #if !defined (_WIN64) - if (NT_SUCCESS (saveStatus) && HasISSE()) + if (NT_SUCCESS (saveStatus) && (HasISSE() || (HasSSE2() && HasMMX()))) KeRestoreFloatingPointState (&floatingPointState); #endif } -- cgit v1.2.3