Add some ldm/vldm optimized CopyMem routines. Add performance macros to BDS

[mirror_edk2.git] / ArmPkg / Library / BaseMemoryLibVstm / CompareMemWrapper.c

diff --git a/ArmPkg/Library/BaseMemoryLibVstm/CompareMemWrapper.c b/ArmPkg/Library/BaseMemoryLibVstm/CompareMemWrapper.c
new file mode 100755 (executable)
index 0000000..278ef33
--- /dev/null
+++ b/ArmPkg/Library/BaseMemoryLibVstm/CompareMemWrapper.c
@@ -0,0 +1,66 @@
+/** @file\r
+  CompareMem() implementation.\r
+\r
+  The following BaseMemoryLib instances contain the same copy of this file:\r
+    BaseMemoryLib\r
+    BaseMemoryLibMmx\r
+    BaseMemoryLibSse2\r
+    BaseMemoryLibRepStr\r
+    BaseMemoryLibOptDxe\r
+    BaseMemoryLibOptPei\r
+    PeiMemoryLib\r
+    UefiMemoryLib\r
+\r
+Copyright (c) 2006 - 2009, 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
+**/\r
+\r
+#include "MemLibInternals.h"\r
+\r
+/**\r
+  Compares the contents of two buffers.\r
+\r
+  This function compares Length bytes of SourceBuffer to Length bytes of DestinationBuffer.\r
+  If all Length bytes of the two buffers are identical, then 0 is returned.  Otherwise, the\r
+  value returned is the first mismatched byte in SourceBuffer subtracted from the first\r
+  mismatched byte in DestinationBuffer.\r
+  \r
+  If Length > 0 and DestinationBuffer is NULL, then ASSERT().\r
+  If Length > 0 and SourceBuffer is NULL, then ASSERT().\r
+  If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then ASSERT().\r
+  If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().\r
+\r
+  @param  DestinationBuffer Pointer to the destination buffer to compare.\r
+  @param  SourceBuffer      Pointer to the source buffer to compare.\r
+  @param  Length            Number of bytes to compare.\r
+\r
+  @return 0                 All Length bytes of the two buffers are identical.\r
+  @retval Non-zero          The first mismatched byte in SourceBuffer subtracted from the first\r
+                            mismatched byte in DestinationBuffer.\r
+                            \r
+**/\r
+INTN\r
+EFIAPI\r
+CompareMem (\r
+  IN CONST VOID  *DestinationBuffer,\r
+  IN CONST VOID  *SourceBuffer,\r
+  IN UINTN       Length\r
+  )\r
+{\r
+  if (Length == 0 || DestinationBuffer == SourceBuffer) {\r
+    return 0;\r
+  }\r
+  ASSERT (DestinationBuffer != NULL);\r
+  ASSERT (SourceBuffer != NULL);\r
+  ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)DestinationBuffer));\r
+  ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)SourceBuffer));\r
+\r
+  return InternalMemCompareMem (DestinationBuffer, SourceBuffer, Length);\r
+}\r