1 /** @file
2   SetMem16() implementation.
3 
4   The following BaseMemoryLib instances contain the same copy of this file:
5     BaseMemoryLib
6     BaseMemoryLibMmx
7     BaseMemoryLibSse2
8     BaseMemoryLibRepStr
9     BaseMemoryLibOptDxe
10     BaseMemoryLibOptPei
11     PeiMemoryLib
12     UefiMemoryLib
13 
14   Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
15   This program and the accompanying materials
16   are licensed and made available under the terms and conditions of the BSD License
17   which accompanies this distribution.  The full text of the license may be found at
18   http://opensource.org/licenses/bsd-license.php.
19 
20   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
21   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
22 
23 **/
24 
25 #include "MemLibInternals.h"
26 
27 /**
28   Fills a target buffer with a 16-bit value, and returns the target buffer.
29 
30   This function fills Length bytes of Buffer with the 16-bit value specified by
31   Value, and returns Buffer. Value is repeated every 16-bits in for Length
32   bytes of Buffer.
33 
34   If Length > 0 and Buffer is NULL, then ASSERT().
35   If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
36   If Buffer is not aligned on a 16-bit boundary, then ASSERT().
37   If Length is not aligned on a 16-bit boundary, then ASSERT().
38 
39   @param  Buffer  The pointer to the target buffer to fill.
40   @param  Length  The number of bytes in Buffer to fill.
41   @param  Value   The value with which to fill Length bytes of Buffer.
42 
43   @return Buffer.
44 
45 **/
46 VOID *
47 EFIAPI
SetMem16(OUT VOID * Buffer,IN UINTN Length,IN UINT16 Value)48 SetMem16 (
49   OUT VOID   *Buffer,
50   IN UINTN   Length,
51   IN UINT16  Value
52   )
53 {
54   if (Length == 0) {
55     return Buffer;
56   }
57 
58   ASSERT (Buffer != NULL);
59   ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));
60   ASSERT ((((UINTN)Buffer) & (sizeof (Value) - 1)) == 0);
61   ASSERT ((Length & (sizeof (Value) - 1)) == 0);
62 
63   return InternalMemSetMem16 (Buffer, Length / sizeof (Value), Value);
64 }
65