MdePkg BaseMemoryLibSse2: Add SSE2 implementation of API IsZeroBuffer()

Add the implementation of API IsZeroBuffer() via assembly in
BaseMemoryLibSse2.

The assembly codes use SSE2 XMM registers and related instructions.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
This commit is contained in:
Hao Wu
2016-08-17 14:27:49 +08:00
parent 02b5cf7fb1
commit 102b4c7cdd
5 changed files with 226 additions and 2 deletions

View File

@@ -9,7 +9,7 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -231,4 +231,21 @@ InternalMemScanMem64 (
IN UINT64 Value
);
/**
Checks whether the contents of a buffer are all zeros.
@param Buffer The pointer to the buffer to be checked.
@param Length The size of the buffer (in bytes) to be checked.
@retval TRUE Contents of the buffer are all zeros.
@retval FALSE Contents of the buffer are not all zeros.
**/
BOOLEAN
EFIAPI
InternalMemIsZeroBuffer (
IN CONST VOID *Buffer,
IN UINTN Length
);
#endif