X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseMemoryLibMmx%2FScanMem8Wrapper.c;h=ef63a54b7114b7bfa616d0410e3880ceae857d38;hb=9095d37b8fe5bfc3d02adad6ba7fd7359ebc0107;hp=0f7289d3df3726dc1f7f0f09bd89cb221f1d1368;hpb=add13dc21720eff1a37fdea34c0fef190e2ad37d;p=mirror_edk2.git
diff --git a/MdePkg/Library/BaseMemoryLibMmx/ScanMem8Wrapper.c b/MdePkg/Library/BaseMemoryLibMmx/ScanMem8Wrapper.c
index 0f7289d3df..ef63a54b71 100644
--- a/MdePkg/Library/BaseMemoryLibMmx/ScanMem8Wrapper.c
+++ b/MdePkg/Library/BaseMemoryLibMmx/ScanMem8Wrapper.c
@@ -1,25 +1,25 @@
/** @file
- ScanMem8() implementation.
+ ScanMem8() and ScanMemN() implementation.
- Copyright (c) 2006, Intel Corporation
- All rights reserved. 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
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
- Module Name: ScanMem8Wrapper.c
-
- The following BaseMemoryLib instances share the same version of this file:
+ The following BaseMemoryLib instances contain the same copy of this file:
BaseMemoryLib
BaseMemoryLibMmx
BaseMemoryLibSse2
BaseMemoryLibRepStr
+ BaseMemoryLibOptDxe
+ BaseMemoryLibOptPei
PeiMemoryLib
- DxeMemoryLib
+ UefiMemoryLib
+
+ Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
+ 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
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
@@ -29,16 +29,17 @@
Scans a target buffer for an 8-bit value, and returns a pointer to the matching 8-bit value
in the target buffer.
- This function searches target the buffer specified by Buffer and Length from the lowest
+ This function searches the target buffer specified by Buffer and Length from the lowest
address to the highest address for an 8-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 Length is greater than (MAX_ADDRESS Buffer + 1), then ASSERT().
+ If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
- @param Buffer Pointer to the target buffer to scan.
- @param Length Number of bytes in Buffer to scan.
- @param Value Value to search for in the target buffer.
+ @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.
@@ -56,6 +57,43 @@ ScanMem8 (
}
ASSERT (Buffer != NULL);
ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));
-
+
return (VOID*)InternalMemScanMem8 (Buffer, Length, Value);
}
+
+/**
+ Scans a target buffer for a UINTN sized value, and returns a pointer to the matching
+ UINTN sized 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 UINTN sized 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 UINTN boundary, then ASSERT().
+ If Length is not aligned on a UINTN 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
+ScanMemN (
+ IN CONST VOID *Buffer,
+ IN UINTN Length,
+ IN UINTN Value
+ )
+{
+ if (sizeof (UINTN) == sizeof (UINT64)) {
+ return ScanMem64 (Buffer, Length, (UINT64)Value);
+ } else {
+ return ScanMem32 (Buffer, Length, (UINT32)Value);
+ }
+}
+