DebugLib:

[mirror_edk2.git] / MdePkg / Library / DxeMemoryLib / ScanMem32Wrapper.c

diff --git a/MdePkg/Library/DxeMemoryLib/ScanMem32Wrapper.c b/MdePkg/Library/DxeMemoryLib/ScanMem32Wrapper.c
new file mode 100644 (file)
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+++ b/MdePkg/Library/DxeMemoryLib/ScanMem32Wrapper.c
@@ -0,0 +1,66 @@
+/** @file\r
+  ScanMem32() implementation.\r
+\r
+  Copyright (c) 2006, Intel Corporation<BR>\r
+  All rights reserved. This program and the accompanying materials\r
+  are licensed and made available under the terms and conditions of the BSD License\r
+  which accompanies this distribution.  The full text of the license may be found at\r
+  http://opensource.org/licenses/bsd-license.php\r
+\r
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+  Module Name:  ScanMem32Wrapper.c\r
+\r
+  The following BaseMemoryLib instances share the same version of this file:\r
+\r
+    BaseMemoryLib\r
+    BaseMemoryLibMmx\r
+    BaseMemoryLibSse2\r
+    BaseMemoryLibRepStr\r
+    PeiMemoryLib\r
+    DxeMemoryLib\r
+\r
+**/\r
+\r
+#include "MemLibInternals.h"\r
+\r
+/**\r
+  Scans a target buffer for a 32-bit value, and returns a pointer to the matching 32-bit value\r
+  in the target buffer.\r
+\r
+  This function searches target the buffer specified by Buffer and Length from the lowest\r
+  address to the highest address for a 32-bit value that matches Value.  If a match is found,\r
+  then a pointer to the matching byte in the target buffer is returned.  If no match is found,\r
+  then NULL is returned.  If Length is 0, then NULL is returned.\r
+  If Length > 0 and Buffer is NULL, then ASSERT().\r
+  If Buffer is not aligned on a 32-bit boundary, then ASSERT().\r
+  If Length is not aligned on a 32-bit boundary, then ASSERT().\r
+  If Length is greater than (MAX_ADDRESS \96 Buffer + 1), then ASSERT(). \r
+\r
+  @param  Buffer      Pointer to the target buffer to scan.\r
+  @param  Length      Number of bytes in Buffer to scan.\r
+  @param  Value       Value to search for in the target buffer.\r
+\r
+  @return A pointer to the matching byte in the target buffer or NULL otherwise.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+ScanMem32 (\r
+  IN CONST VOID  *Buffer,\r
+  IN UINTN       Length,\r
+  IN UINT32      Value\r
+  )\r
+{\r
+  if (Length == 0) {\r
+    return NULL;\r
+  }\r
+\r
+  ASSERT (Buffer != NULL);\r
+  ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);\r
+  ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));\r
+  ASSERT ((Length & (sizeof (Value) - 1)) == 0);\r
+\r
+  return (VOID*)InternalMemScanMem32 (Buffer, Length / sizeof (Value), Value);\r
+}\r