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Fix the issues about the loop count for checksum 16,32,64. The input parameters are the buffer size according to Mde Lib spec. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4649 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8 2008-02-01 14:53:33 +00:00
parent 3e3c809fc1
commit f9cea76b15
1 changed files with 9 additions and 5 deletions
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14
MdePkg/Library/BaseLib/CheckSum.c
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@ -122,14 +122,15 @@ CalculateSum16 (
{ {
UINT16 Sum; UINT16 Sum;
UINTN Count; UINTN Count;
UINTN Total;
ASSERT (Buffer != NULL); ASSERT (Buffer != NULL);
ASSERT (((UINTN) Buffer & 0x1) == 0); ASSERT (((UINTN) Buffer & 0x1) == 0);
ASSERT ((Length & 0x1) == 0); ASSERT ((Length & 0x1) == 0);
ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1)); ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));
Total = Length / sizeof (*Buffer);
for (Sum = 0, Count = 0; Count < Length; Count++) { for (Sum = 0, Count = 0; Count < Total; Count++) {
Sum = (UINT16) (Sum + *(Buffer + Count)); Sum = (UINT16) (Sum + *(Buffer + Count));
} }
@ -203,14 +204,15 @@ CalculateSum32 (
{ {
UINT32 Sum; UINT32 Sum;
UINTN Count; UINTN Count;
UINTN Total;
ASSERT (Buffer != NULL); ASSERT (Buffer != NULL);
ASSERT (((UINTN) Buffer & 0x3) == 0); ASSERT (((UINTN) Buffer & 0x3) == 0);
ASSERT ((Length & 0x3) == 0); ASSERT ((Length & 0x3) == 0);
ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1)); ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1));
Total = Length / sizeof (*Buffer);
for (Sum = 0, Count = 0; Count < Length; Count++) { for (Sum = 0, Count = 0; Count < Total; Count++) {
Sum = Sum + *(Buffer + Count); Sum = Sum + *(Buffer + Count);
} }
@ -284,13 +286,15 @@ CalculateSum64 (
{ {
UINT64 Sum; UINT64 Sum;
UINTN Count; UINTN Count;
UINTN Total;
ASSERT (Buffer != NULL); ASSERT (Buffer != NULL);
ASSERT (((UINTN) Buffer & 0x7) == 0); ASSERT (((UINTN) Buffer & 0x7) == 0);
ASSERT ((Length & 0x7) == 0); ASSERT ((Length & 0x7) == 0);
ASSERT (Length <= (MAX_ADDRESS - ((UINTN) Buffer) + 1)); 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); Sum = Sum + *(Buffer + Count);
} }