MdePkg/Library/BaseMemoryLib/SetMem16Wrapper.c

   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 - 2009, Intel Corporation<BR>
  15   All rights reserved. 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  Pointer to the target buffer to fill.
  40   @param  Length  Number of bytes in Buffer to fill.
  41   @param  Value   Value with which to fill Length bytes of Buffer.
  42
  43   @return Buffer.
  44
  45 **/
  46 VOID *
  47 EFIAPI
  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 }