Fill uninitialized data padding with 0 when VirtualSize(init+uninit) …

[dennis-tseng99]

There are 4 cases when comparing VirtualSize with SizeOfRawData. Original codes works very well for 3 cases but case 2. My new codes mainly focus on case 2.

I also removed ZeroMem() when Characteristics & EFI_IMAGE_SCN_CNT_UNINITIALIZED_DATA is true. This is because the original codes have already covered the case 4.

- if (Section->Characteristics & EFI_IMAGE_SCN_CNT_UNINITIALIZED_DATA) {
-    ZeroMem(base, Section->Misc.VirtualSize);
- }

case 1: if VirtualSize(init+uninit) > SizeOfRawData(init+alignment), then
               minSize = SizeOfRawData
               CopyMem(base, data+Section->PointerToRawData, SizeOfRawData);                     
               //We need to fill 0 in uninit part of VirtualSize
               ZeroMem(base+SizeOfRawData, Section->Misc.VirtualSize-SizeOfRawData);

case 2: if VirtualSize(init+uninit) < SizeOfRawData(init+alignment), then
               minSize = VirtualSize(init+uninit)
               CopyMem(base, data+Section->PointerToRawData, VirtualSize);                     
               //We might already copied garbage uninit bytes from RawData after above CopyMem(), so
               //we need to fill 0 for uninit part of VirtualSize
               ZeroMem(base+SizeOfRawData, Section->Misc.VirtualSize-SizeOfRawData);

case 3: if VirtualSize(init) < SizeOfRawData(init+alignment), then
               minSize = VirtualSize(init) 
               CopyMem(base, data+Section->PointerToRawData, VirtualSize);   

case 4: if VirtualSize(uninit) > SizeOfRawData(0), then
                minSize = SizeOfRawData(0)                      
                //We need to fill 0 in uninit part of VirtualSize
                ZeroMem(base+0, Section->Misc.VirtualSize-0); 

[dennis-tseng99]

I'm a first time contributor so the workflow for tests hasn't run automatically. Please can an admin click the button to start it ?