1 /** @file 2 ZeroMem() implementation. 3 4 The following BaseMemoryLib instances contain the same copy of this file: 5 6 BaseMemoryLib 7 BaseMemoryLibMmx 8 BaseMemoryLibSse2 9 BaseMemoryLibRepStr 10 BaseMemoryLibOptDxe 11 BaseMemoryLibOptPei 12 PeiMemoryLib 13 UefiMemoryLib 14 15 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR> 16 This program and the accompanying materials 17 are licensed and made available under the terms and conditions of the BSD License 18 which accompanies this distribution. The full text of the license may be found at 19 http://opensource.org/licenses/bsd-license.php. 20 21 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 22 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 23 24 **/ 25 26 #include "MemLibInternals.h" 27 28 /** 29 Fills a target buffer with zeros, and returns the target buffer. 30 31 This function fills Length bytes of Buffer with zeros, and returns Buffer. 32 33 If Length > 0 and Buffer is NULL, then ASSERT(). 34 If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). 35 36 @param Buffer The pointer to the target buffer to fill with zeros. 37 @param Length The number of bytes in Buffer to fill with zeros. 38 39 @return Buffer. 40 41 **/ 42 VOID * 43 EFIAPI 44 ZeroMem ( 45 OUT VOID *Buffer, 46 IN UINTN Length 47 ) 48 { 49 if (Length == 0) { 50 return Buffer; 51 } 52 53 ASSERT (Buffer != NULL); 54 ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1)); 55 return InternalMemZeroMem (Buffer, Length); 56 } 57
