public void RemoveRelocLineTable()
{
if (RelocLineTable != null)
{
Elf.RemoveSection(RelocLineTable);
RelocLineTable = null;
}
}
private ElfRelocationTable GetOrCreateRelocationTable(ElfBinarySection section)
{
var newSection = new ElfRelocationTable()
{
Name = $".rela{section.Name}",
Alignment = (ulong)AddressSize,
Flags = ElfSectionFlags.InfoLink,
Type = ElfSectionType.RelocationAddends,
Info = section,
Link = _symbolTable,
};
Elf.AddSection(newSection);
return(newSection);
}
private static void CopyRelocationsX86_64(DwarfRelocatableSection dwarfRelocSection, DwarfElfContext elfContext, ElfRelocationTable relocTable)
{
relocTable.Entries.Clear();
foreach (var reloc in dwarfRelocSection.Relocations)
{
var relocType = reloc.Size == DwarfAddressSize.Bit64 ? ElfRelocationType.R_X86_64_64 : ElfRelocationType.R_X86_64_32;
switch (reloc.Target)
{
case DwarfRelocationTarget.Code:
relocTable.Entries.Add(new ElfRelocation(reloc.Offset, relocType, (uint)elfContext.CodeSectionSymbolIndex, (long)reloc.Addend));
break;
case DwarfRelocationTarget.DebugString:
relocTable.Entries.Add(new ElfRelocation(reloc.Offset, relocType, (uint)elfContext.StringTableSymbolIndex, (long)reloc.Addend));
break;
case DwarfRelocationTarget.DebugAbbrev:
relocTable.Entries.Add(new ElfRelocation(reloc.Offset, relocType, (uint)elfContext.AbbreviationTableSymbolIndex, (long)reloc.Addend));
break;
case DwarfRelocationTarget.DebugInfo:
relocTable.Entries.Add(new ElfRelocation(reloc.Offset, relocType, (uint)elfContext.InfoSectionSymbolIndex, (long)reloc.Addend));
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
public static void CopyRelocationsTo(this DwarfRelocatableSection dwarfRelocSection, DwarfElfContext elfContext, ElfRelocationTable relocTable)
{
if (elfContext == null)
{
throw new ArgumentNullException(nameof(elfContext));
}
if (relocTable == null)
{
throw new ArgumentNullException(nameof(relocTable));
}
switch (elfContext.Elf.Arch.Value)
{
case ElfArch.X86_64:
CopyRelocationsX86_64(dwarfRelocSection, elfContext, relocTable);
break;
default:
throw new NotImplementedException($"The relocation for architecture {relocTable.Parent.Arch} is not supported/implemented.");
}
}
