diff options
Diffstat (limited to 'MdePkg/Library/PeiMemoryLib/ScanMem8Wrapper.c')
-rw-r--r-- | MdePkg/Library/PeiMemoryLib/ScanMem8Wrapper.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/MdePkg/Library/PeiMemoryLib/ScanMem8Wrapper.c b/MdePkg/Library/PeiMemoryLib/ScanMem8Wrapper.c index 2add7849cd..9efca5e02a 100644 --- a/MdePkg/Library/PeiMemoryLib/ScanMem8Wrapper.c +++ b/MdePkg/Library/PeiMemoryLib/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);
+}
+
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