private static unsafe void CopySections(byte *data, PeFileReader.NtHeaders *header, byte *baseaddr)
{
int i, size;
byte *dest;
// roughly, IMAGE_FIRST_SECTION macro. 0x18 is the offset of the optional header, plus size of optional header.
PeFileReader.ImageSectionHeader *section = (PeFileReader.ImageSectionHeader *)(((byte *)header) + 0x18 + header->SizeOfOptionalHeader);
for (i = 0; i < header->NumberOfSections; i++, section++)
{
if (section->SizeOfRawData == 0)
{
size = header->OptionalHeader.SectionAlignment;
if (size > 0)
{
dest = (byte *)(baseaddr + section->VirtualAddress);
section->PhysicalAddress = (int)dest;
Native.Memset(dest, 0, size);
}
}
else
{
dest = (byte *)(baseaddr + section->VirtualAddress);
Native.Memcpy(dest, data + section->PointerToRawData, section->SizeOfRawData);
section->PhysicalAddress = (int)dest;
}
}
}
private static unsafe void PerformBaseReloc(byte *baseaddr, PeFileReader.NtHeaders *ntheader, int relocOffset)
{
int i;
PeFileReader.NtHeaders.ImageDataDirectory *directory;
directory = (PeFileReader.NtHeaders.ImageDataDirectory *) & ntheader->OptionalHeader.IDD5;
if (directory->Size > 0)
{
PeFileReader.ImageBaseRelocation *relocation = (PeFileReader.ImageBaseRelocation *)(baseaddr + directory->VirtualAddress);
for (; relocation->VirtualAddress > 0;)
{
byte * dest = (byte *)(baseaddr + relocation->VirtualAddress);
ushort *relocInfo = (ushort *)((byte *)relocation + IMAGE_SIZEOF_BASE_RELOCATION);
for (i = 0; i < ((relocation->SizeOfBlock - IMAGE_SIZEOF_BASE_RELOCATION) / 2); i++, relocInfo++)
{
uint *patch_addr;
int type, offset;
type = *relocInfo >> 12;
offset = *relocInfo & 0xfff;
if (type == IMAGE_REL_BASED_HIGHLOW)
{
patch_addr = (uint *)(dest + offset);
*patch_addr += unchecked ((uint)relocOffset);
}
}
relocation = (PeFileReader.ImageBaseRelocation *)(((ulong)relocation) + (ulong)relocation->SizeOfBlock);
}
}
}
