mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-05 13:33:33 +01:00
7c0aa811ec
Signed-off-by: Sergey Isakov <isakov-sl@bk.ru>
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/** @file
|
|
ScanMem64() implementation.
|
|
|
|
The following BaseMemoryLib instances contain the same copy of this file:
|
|
|
|
BaseMemoryLib
|
|
BaseMemoryLibMmx
|
|
BaseMemoryLibSse2
|
|
BaseMemoryLibRepStr
|
|
BaseMemoryLibOptDxe
|
|
BaseMemoryLibOptPei
|
|
PeiMemoryLib
|
|
UefiMemoryLib
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include "MemLibInternals.h"
|
|
|
|
/**
|
|
Scans a target buffer for a 64-bit value, and returns a pointer to the matching 64-bit value
|
|
in the target buffer.
|
|
|
|
This function searches the target buffer specified by Buffer and Length from the lowest
|
|
address to the highest address for a 64-bit value that matches Value. If a match is found,
|
|
then a pointer to the matching byte in the target buffer is returned. If no match is found,
|
|
then NULL is returned. If Length is 0, then NULL is returned.
|
|
|
|
If Length > 0 and Buffer is NULL, then ASSERT().
|
|
If Buffer is not aligned on a 64-bit boundary, then ASSERT().
|
|
If Length is not aligned on a 64-bit boundary, then ASSERT().
|
|
If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
|
|
|
@param Buffer The pointer to the target buffer to scan.
|
|
@param Length The number of bytes in Buffer to scan.
|
|
@param Value The value to search for in the target buffer.
|
|
|
|
@return A pointer to the matching byte in the target buffer or NULL otherwise.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
ScanMem64 (
|
|
IN CONST VOID *Buffer,
|
|
IN UINTN Length,
|
|
IN UINT64 Value
|
|
)
|
|
{
|
|
if (Length == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
ASSERT (Buffer != NULL);
|
|
ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);
|
|
ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));
|
|
ASSERT ((Length & (sizeof (Value) - 1)) == 0);
|
|
|
|
return (VOID*)InternalMemScanMem64 (Buffer, Length / sizeof (Value), Value);
|
|
}
|