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authormdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524>2009-12-05 18:48:52 +0000
committermdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524>2009-12-05 18:48:52 +0000
commitf7753a96ba1653ddd31b01c198a352f6332ac404 (patch)
tree8b4574ec6984908bb8f6dc8a6e5fe25836c6bffa /MdePkg/Library/BaseMemoryLibOptPei/ScanMem8Wrapper.c
parent432cf05bcffa00c084bff8a8fcffb477c3227aa4 (diff)
downloadedk2-f7753a96ba1653ddd31b01c198a352f6332ac404.tar.gz
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Add SetMemN() and ScanMemN() to the BaseMemoryLib class and all BaseMemoryLib implementations
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9517 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibOptPei/ScanMem8Wrapper.c')
-rw-r--r--MdePkg/Library/BaseMemoryLibOptPei/ScanMem8Wrapper.c38
1 files changed, 37 insertions, 1 deletions
diff --git a/MdePkg/Library/BaseMemoryLibOptPei/ScanMem8Wrapper.c b/MdePkg/Library/BaseMemoryLibOptPei/ScanMem8Wrapper.c
index 2add7849cd..9efca5e02a 100644
--- a/MdePkg/Library/BaseMemoryLibOptPei/ScanMem8Wrapper.c
+++ b/MdePkg/Library/BaseMemoryLibOptPei/ScanMem8Wrapper.c
@@ -1,5 +1,5 @@
/** @file
- ScanMem8() implementation.
+ ScanMem8() and ScanMemN() implementation.
The following BaseMemoryLib instances contain the same copy of this file:
@@ -60,3 +60,39 @@ ScanMem8 (
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 target the 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 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.
+
+ @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);
+ }
+ return ScanMem32 (Buffer, Length, (UINT32)Value);
+}
+