public override ElfRelocation LoadRelaEntry(EndianImageReader rdr) { var rela = Elf64_Rela.Read(rdr); return(new ElfRelocation { Offset = rela.r_offset, Info = rela.r_info, Addend = rela.r_addend, SymbolIndex = (int)(rela.r_info >> 32), }); }
public override void RelocateEntry(Program program, ElfSymbol sym, ElfSection referringSection, Elf64_Rela rela) { if (loader.Sections.Count <= sym.SectionIndex) return; if (sym.SectionIndex == 0) return; var symSection = loader.Sections[(int)sym.SectionIndex]; ulong S = (ulong)sym.Value + symSection.Address.ToLinear(); long A = 0; int sh = 0; uint mask = ~0u; Address addr; ulong P; ImageReader relR; ImageWriter relW; if (referringSection.Address != null) { addr = referringSection.Address + rela.r_offset; P = addr.ToLinear(); relR = program.CreateImageReader(addr); relW = program.CreateImageWriter(addr); } else { addr = null; P = 0; relR = null; relW = null; } ulong PP = P; var rt = (x86_64Rt)(rela.r_info & 0xFF); switch (rt) { case x86_64Rt.R_X86_64_NONE: // just ignore (common) break; case x86_64Rt.R_X86_64_COPY: break; default: Debug.Print("x86_64 ELF relocation type {0} not implemented yet.", rt); break; //throw new NotImplementedException(string.Format( // "x86_64 ELF relocation type {0} not implemented yet.", // rt)); } if (relR != null) { var w = relR.ReadUInt64(); w += ((ulong)(S + (ulong)A + P) >> sh) & mask; relW.WriteUInt64(w); } }
public override void Relocate(Program program) { DumpRela64(loader); foreach (var relSection in loader.Sections.Where(s => s.Type == SectionHeaderType.SHT_RELA)) { var symbols = loader.Symbols[relSection.LinkedSection]; var referringSection = relSection.RelocatedSection; var rdr = loader.CreateReader(relSection.FileOffset); for (uint i = 0; i < relSection.EntryCount(); ++i) { var rela = Elf64_Rela.Read(rdr); var sym = symbols[(int)(rela.r_info >> 32)]; RelocateEntry(program, sym, referringSection, rela); } } }
protected void DumpRela64(ElfLoader64 loader) { foreach (var section in loader.Sections.Where(s => s.Type == SectionHeaderType.SHT_RELA)) { Debug.Print("RELA: offset {0:X} link section {1}", section.FileOffset, section.LinkedSection.Name); var symbols = loader.Symbols[section.LinkedSection]; var rdr = loader.CreateReader(section.FileOffset); for (uint i = 0; i < section.EntryCount(); ++i) { var rela = Elf64_Rela.Read(rdr); Debug.Print(" off:{0:X16} type:{1,-16} add:{3,-20} {4,3} {2}", rela.r_offset, (SparcRt)(rela.r_info & 0xFF), symbols[(int)(rela.r_info >> 8)].Name, rela.r_addend, (int)(rela.r_info >> 8)); } } }
public abstract void RelocateEntry(Program program, ElfSymbol symbol, ElfSection referringSection, Elf64_Rela rela);
public override void RelocateEntry(Program program, ElfSymbol sym, ElfSection referringSection, Elf64_Rela rela) { if (loader.Sections.Count <= sym.SectionIndex) { return; } if (sym.SectionIndex == 0) { return; } var symSection = loader.Sections[(int)sym.SectionIndex]; ulong S = (ulong)sym.Value + symSection.Address.ToLinear(); long A = 0; int sh = 0; uint mask = ~0u; Address addr; ulong P; ImageReader relR; ImageWriter relW; if (referringSection.Address != null) { addr = referringSection.Address + rela.r_offset; P = addr.ToLinear(); relR = program.CreateImageReader(addr); relW = program.CreateImageWriter(addr); } else { addr = null; P = 0; relR = null; relW = null; } ulong PP = P; var rt = (x86_64Rt)(rela.r_info & 0xFF); switch (rt) { case x86_64Rt.R_X86_64_NONE: // just ignore (common) break; case x86_64Rt.R_X86_64_COPY: break; default: Debug.Print("x86_64 ELF relocation type {0} not implemented yet.", rt); break; //throw new NotImplementedException(string.Format( // "x86_64 ELF relocation type {0} not implemented yet.", // rt)); } if (relR != null) { var w = relR.ReadUInt64(); w += ((ulong)(S + (ulong)A + P) >> sh) & mask; relW.WriteUInt64(w); } }
public virtual void RelocateEntry(ElfSymbol symbol, ElfSection referringSection, Elf64_Rela rela) { throw new NotImplementedException(); }
public override void RelocateEntry(Program program, ElfSymbol symbol, ElfSection referringSection, Elf64_Rela rela) { throw new NotImplementedException(); }