public override List <ElfSection> LoadSectionHeaders()
{
// Create the sections.
var inames = new List <uint>();
var links = new List <uint>();
var infos = new List <uint>();
var sections = new List <ElfSection>();
var rdr = CreateReader(Header64.e_shoff);
for (uint i = 0; i < Header64.e_shnum; ++i)
{
var shdr = Elf64_SHdr.Load(rdr);
var section = new ElfSection
{
Number = i,
Type = shdr.sh_type,
Flags = shdr.sh_flags,
Address = shdr.sh_addr != 0
? platform !.MakeAddressFromLinear(shdr.sh_addr, false)
: null !,
FileOffset = shdr.sh_offset,
Size = shdr.sh_size,
Alignment = shdr.sh_addralign,
EntrySize = shdr.sh_entsize,
};
sections.Add(section);
inames.Add(shdr.sh_name);
links.Add(shdr.sh_link);
infos.Add(shdr.sh_info);
}
// Get section names and crosslink sections.
for (int i = 0; i < sections.Count; ++i)
{
var section = sections[i];
section.Name = ReadSectionName(sections, inames[i]);
ElfSection?linkSection = null;
ElfSection?relSection = null;
switch (section.Type)
{
case SectionHeaderType.SHT_REL:
case SectionHeaderType.SHT_RELA:
linkSection = GetSectionByIndex(sections, links[i]);
relSection = GetSectionByIndex(sections, infos[i]);
break;
case SectionHeaderType.SHT_DYNAMIC:
case SectionHeaderType.SHT_HASH:
case SectionHeaderType.SHT_SYMTAB:
case SectionHeaderType.SHT_DYNSYM:
linkSection = GetSectionByIndex(sections, links[i]);
break;
}
section.LinkedSection = linkSection;
section.RelocatedSection = relSection;
}
return(sections);
}
public string GetStrPtr64(Elf64_SHdr sect, uint offset)
{
if (sect == null)
{
// Most commonly, this will be an null, because a call to GetSectionByName() failed
throw new ArgumentException("GetStrPtr passed null section.");
}
// Get a pointer to the start of the string table and add the offset
return ReadAsciiString(RawImage, sect.sh_offset + offset);
}
private ImageMapSegmentRenderer CreateRenderer64(Elf64_SHdr shdr)
{
switch (shdr.sh_type)
{
case SectionHeaderType.SHT_DYNAMIC:
return new DynamicSectionRenderer64(this, shdr);
case SectionHeaderType.SHT_RELA:
return new RelaSegmentRenderer64(this, shdr);
case SectionHeaderType.SHT_SYMTAB:
case SectionHeaderType.SHT_DYNSYM:
return new SymtabSegmentRenderer64(this, shdr);
default: return null;
}
}
public SymtabSegmentRenderer64(ElfImageLoader loader, Elf64_SHdr shdr)
{
this.loader = loader;
this.shdr = shdr;
}
private ImageMapSegmentRenderer CreateRenderer64(Elf64_SHdr shdr)
{
return null; //$NYI
}
public DynamicSectionRenderer64(ElfImageLoader loader, Elf64_SHdr shdr)
{
this.loader = loader;
this.shdr = shdr;
}
public SymtabSegmentRenderer64(ElfImageLoader loader, Elf64_SHdr shdr)
{
this.loader = loader;
this.shdr = shdr;
}
public DynamicSectionRenderer64(ElfImageLoader loader, Elf64_SHdr shdr)
{
this.loader = loader;
this.shdr = shdr;
}