private bool KamekUseReloc(Elf.Reloc type, Word source, Word dest)
{
if (source < _kamekStart || source >= _kamekEnd)
{
return(false);
}
if (type != Elf.Reloc.R_PPC_ADDR32)
{
throw new InvalidOperationException("Unsupported relocation type in the Kamek hook data section");
}
_kamekRelocations[source] = dest;
return(true);
}
private void ProcessRelaSection(Elf elf, Elf.ElfSection relocs, Elf.ElfSection section, Elf.ElfSection symtab)
{
if (relocs.sh_entsize != 12)
{
throw new InvalidDataException("Invalid relocs format (sh_entsize != 12)");
}
if (symtab.sh_type != Elf.ElfSection.Type.SHT_SYMTAB)
{
throw new InvalidDataException("Symbol table does not have type SHT_SYMTAB");
}
var reader = new BinaryReader(new MemoryStream(relocs.data));
int count = relocs.data.Length / 12;
for (int i = 0; i < count; i++)
{
uint r_offset = reader.ReadBigUInt32();
uint r_info = reader.ReadBigUInt32();
int r_addend = reader.ReadBigInt32();
Elf.Reloc reloc = (Elf.Reloc)(r_info & 0xFF);
int symIndex = (int)(r_info >> 8);
if (symIndex == 0)
{
throw new InvalidDataException("linking to undefined symbol");
}
if (!_sectionBases.ContainsKey(section))
{
continue; // we don't care about this
}
string symName = _symbolTableContents[symtab][symIndex];
//Console.WriteLine("{0,-30} {1}", symName, reloc);
Word source = _sectionBases[section] + r_offset;
Word dest = ResolveSymbol(elf, symName).address + r_addend;
//Console.WriteLine("Linking from {0} to {1}", source, dest);
if (!KamekUseReloc(reloc, source, dest))
{
_fixups.Add(new Fixup {
type = reloc, source = source, dest = dest
});
}
}
}
public RelocCommand(Word source, Word target, Elf.Reloc reloc)
: base((Ids)reloc, source)
{
Target = target;
}
