Import some basic libraries instances for Mde Packages.

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibSse2 / MemLibGuid.c

diff --git a/MdePkg/Library/BaseMemoryLibSse2/MemLibGuid.c b/MdePkg/Library/BaseMemoryLibSse2/MemLibGuid.c
new file mode 100644 (file)
index 0000000..2434358
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibSse2/MemLibGuid.c
@@ -0,0 +1,137 @@
+/** @file\r
+  Implementation of GUID functions.\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:  MemLibGuid.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
+//\r
+// Include common header file for this module.\r
+//\r
+#include "CommonHeader.h"\r
+\r
+/**\r
+  Copies a source GUID to a destination GUID.\r
+\r
+  This function copies the contents of the 128-bit GUID specified by SourceGuid to\r
+  DestinationGuid, and returns DestinationGuid.\r
+  If DestinationGuid is NULL, then ASSERT().\r
+  If SourceGuid is NULL, then ASSERT().\r
+\r
+  @param  DestinationGuid   Pointer to the destination GUID.\r
+  @param  SourceGuid        Pointer to the source GUID.\r
+\r
+  @return DestinationGuid.\r
+\r
+**/\r
+GUID *\r
+EFIAPI\r
+CopyGuid (\r
+  OUT GUID       *DestinationGuid,\r
+  IN CONST GUID  *SourceGuid\r
+  )\r
+{\r
+  WriteUnaligned64 (\r
+    (UINT64*)DestinationGuid,\r
+    ReadUnaligned64 ((CONST UINT64*)SourceGuid)\r
+    );\r
+  WriteUnaligned64 (\r
+    (UINT64*)DestinationGuid + 1,\r
+    ReadUnaligned64 ((CONST UINT64*)SourceGuid + 1)\r
+    );\r
+  return DestinationGuid;\r
+}\r
+\r
+/**\r
+  Compares two GUIDs.\r
+\r
+  This function compares Guid1 to Guid2.  If the GUIDs are identical then TRUE is returned.\r
+  If there are any bit differences in the two GUIDs, then FALSE is returned.\r
+  If Guid1 is NULL, then ASSERT().\r
+  If Guid2 is NULL, then ASSERT().\r
+\r
+  @param  Guid1       A pointer to a 128 bit GUID.\r
+  @param  Guid2       A pointer to a 128 bit GUID.\r
+\r
+  @retval TRUE        Guid1 and Guid2 are identical.\r
+  @retval FALSE       Guid1 and Guid2 are not identical.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+CompareGuid (\r
+  IN CONST GUID  *Guid1,\r
+  IN CONST GUID  *Guid2\r
+  )\r
+{\r
+  return (BOOLEAN)(\r
+           ReadUnaligned64 ((CONST UINT64*)Guid1)\r
+             == ReadUnaligned64 ((CONST UINT64*)Guid2) &&\r
+           ReadUnaligned64 ((CONST UINT64*)Guid1 + 1)\r
+             == ReadUnaligned64 ((CONST UINT64*)Guid2 + 1)\r
+           );\r
+}\r
+\r
+/**\r
+  Scans a target buffer for a GUID, and returns a pointer to the matching GUID\r
+  in the target buffer.\r
+\r
+  This function searches target the buffer specified by Buffer and Length from\r
+  the lowest address to the highest address at 128-bit increments for the 128-bit\r
+  GUID value that matches Guid.  If a match is found, then a pointer to the matching\r
+  GUID in the target buffer is returned.  If no match is found, then NULL is returned.\r
+  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 128-bit boundary, then ASSERT().\r
+  If Length is greater than (MAX_ADDRESS ? 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  Guid    Value to search for in the target buffer.\r
+\r
+  @return A pointer to the matching Guid in the target buffer or NULL otherwise.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+ScanGuid (\r
+  IN CONST VOID  *Buffer,\r
+  IN UINTN       Length,\r
+  IN CONST GUID  *Guid\r
+  )\r
+{\r
+  CONST GUID                        *GuidPtr;\r
+\r
+  ASSERT (((UINTN)Buffer & (sizeof (Guid->Data1) - 1)) == 0);\r
+  ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));\r
+  ASSERT ((Length & (sizeof (*GuidPtr) - 1)) == 0);\r
+\r
+  GuidPtr = (GUID*)Buffer;\r
+  Buffer  = GuidPtr + Length / sizeof (*GuidPtr);\r
+  while (GuidPtr < (CONST GUID*)Buffer) {\r
+    if (CompareGuid (GuidPtr, Guid)) {\r
+      return (VOID*)GuidPtr;\r
+    }\r
+    GuidPtr++;\r
+  }\r
+  return NULL;\r
+}\r