diff options
| -rw-r--r-- | MdePkg/Library/BaseLib/CheckSum.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/MdePkg/Library/BaseLib/CheckSum.c b/MdePkg/Library/BaseLib/CheckSum.c index 5f755451c4..8612c7c392 100644 --- a/MdePkg/Library/BaseLib/CheckSum.c +++ b/MdePkg/Library/BaseLib/CheckSum.c @@ -122,14 +122,15 @@ CalculateSum16 ( {
UINT16 Sum;
UINTN Count;
+ UINTN Total;
ASSERT (Buffer != NULL);
ASSERT (((UINTN) Buffer & 0x1) == 0);
ASSERT ((Length & 0x1) == 0);
ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));
-
- for (Sum = 0, Count = 0; Count < Length; Count++) {
+ Total = Length / sizeof (*Buffer);
+ for (Sum = 0, Count = 0; Count < Total; Count++) {
Sum = (UINT16) (Sum + *(Buffer + Count));
}
@@ -203,14 +204,15 @@ CalculateSum32 ( {
UINT32 Sum;
UINTN Count;
+ UINTN Total;
ASSERT (Buffer != NULL);
ASSERT (((UINTN) Buffer & 0x3) == 0);
ASSERT ((Length & 0x3) == 0);
ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));
-
- for (Sum = 0, Count = 0; Count < Length; Count++) {
+ Total = Length / sizeof (*Buffer);
+ for (Sum = 0, Count = 0; Count < Total; Count++) {
Sum = Sum + *(Buffer + Count);
}
@@ -284,13 +286,15 @@ CalculateSum64 ( {
UINT64 Sum;
UINTN Count;
+ UINTN Total;
ASSERT (Buffer != NULL);
ASSERT (((UINTN) Buffer & 0x7) == 0);
ASSERT ((Length & 0x7) == 0);
ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));
- for (Sum = 0, Count = 0; Count < Length; Count++) {
+ Total = Length / sizeof (*Buffer);
+ for (Sum = 0, Count = 0; Count < Total; Count++) {
Sum = Sum + *(Buffer + Count);
}
|