sravan/system76-edk2
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Fix a bug that length might be a negative value for worker function BasePrintLibFillBuffer(). In view of this, it is better to reuse for loop to fill the buffer.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7300 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
2009-01-19 05:18:23 +00:00
parent 3069bc1944
commit a2bc29c4b1
3 changed files with 12 additions and 12 deletions
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21
MdePkg/Library/BasePrintLib/PrintLibInternal.c
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@ -61,6 +61,7 @@ GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 *mStatusString[] = {
@param EndBuffer The end of the input Buffer. No characters will be
placed after that.
@param Length Count of character to be placed into Buffer.
(Negative value indicates no buffer fill.)
@param Character Character to be placed into Buffer.
@param Increment Character increment in Buffer.
@ -76,17 +77,17 @@ BasePrintLibFillBuffer (
IN INTN Increment
)
{
UINTN FillBufferSize;
if(Increment == 1) {
FillBufferSize = MIN (Length, (EndBuffer - Buffer));
Buffer = SetMem (Buffer, FillBufferSize, (UINT8) Character);
} else {
FillBufferSize = MIN (Length << 1, (EndBuffer - Buffer));
Buffer = SetMem16 (Buffer, FillBufferSize, (UINT16) Character);
}
INTN Index;
return Buffer + FillBufferSize;
for (Index = 0; Index < Length && Buffer < EndBuffer; Index++) {
*Buffer = (CHAR8) Character;
if (Increment != 1) {
*(Buffer + 1) = (CHAR8)(Character >> 8);
}
Buffer += Increment;
}
return Buffer;
}
/**