/// <summary>
/// Collects all required segments from the sections and determines
/// their total size.
/// </summary>
/// <returns></returns>
public Dictionary <ElfSection, Elf32_PHdr> ComputeSegmentSizes()
{
CollectCommonSymbolsIntoSection();
CollectUndefinedSymbolsIntoSection();
var mpToSegment = new Dictionary <ulong, Elf32_PHdr>();
var mpSectionToSegment = new Dictionary <ElfSection, Elf32_PHdr>();
foreach (var section in loader.Sections
.Where(s => (s.Flags & ElfLoader.SHF_ALLOC) != 0))
{
Elf32_PHdr segment;
if (!mpToSegment.TryGetValue(section.Flags, out segment))
{
segment = new Elf32_PHdr();
segment.p_flags = SegmentAccess(section.Flags);
mpToSegment.Add(section.Flags, segment);
Segments.Add(segment);
}
segment.p_pmemsz = Align(segment.p_pmemsz, (uint)section.Alignment);
mpSectionToSegment.Add(section, segment);
if (section.Type != SectionHeaderType.SHT_NOBITS)
{
segment.p_pmemsz += (uint)section.Size;
segment.p_filesz += (uint)section.Size;
}
else
{
segment.p_pmemsz += (uint)section.Size;
segment.p_filesz += 0;
}
}
return(mpSectionToSegment);
}
public static Elf32_PHdr Load(ImageReader rdr)
{
var hdr = new Elf32_PHdr
{
p_type = (ProgramHeaderType)rdr.ReadUInt32(),
p_offset = rdr.ReadUInt32(),
p_vaddr = rdr.ReadUInt32(),
p_paddr = rdr.ReadUInt32(),
p_filesz = rdr.ReadUInt32(),
p_pmemsz = rdr.ReadUInt32(),
p_flags = rdr.ReadUInt32(),
p_align = rdr.ReadUInt32(),
};
return hdr;
}
public static Elf32_PHdr Load(EndianImageReader rdr)
{
var hdr = new Elf32_PHdr
{
p_type = (ProgramHeaderType)rdr.ReadUInt32(),
p_offset = rdr.ReadUInt32(),
p_vaddr = rdr.ReadUInt32(),
p_paddr = rdr.ReadUInt32(),
p_filesz = rdr.ReadUInt32(),
p_pmemsz = rdr.ReadUInt32(),
p_flags = rdr.ReadUInt32(),
p_align = rdr.ReadUInt32(),
};
return(hdr);
}
public override int LoadSegments()
{
var rdr = imgLoader.CreateReader(Header.e_phoff);
for (int i = 0; i < Header.e_phnum; ++i)
{
var sSeg = Elf32_PHdr.Load(rdr);
Segments.Add(new ElfSegment
{
p_type = sSeg.p_type,
p_offset = sSeg.p_offset,
p_vaddr = sSeg.p_vaddr,
p_paddr = sSeg.p_paddr,
p_filesz = sSeg.p_filesz,
p_pmemsz = sSeg.p_pmemsz,
p_flags = sSeg.p_flags,
p_align = sSeg.p_align,
});
}
return(Segments.Count);
}
/// <summary>
/// Collects all required segments from the sections and determines
/// their total size.
/// </summary>
/// <returns></returns>
public Dictionary<ElfSection, Elf32_PHdr> ComputeSegmentSizes()
{
CollectCommonSymbolsIntoSection();
CollectUndefinedSymbolsIntoSection();
var mpToSegment = new Dictionary<ulong, Elf32_PHdr>();
var mpSectionToSegment = new Dictionary<ElfSection, Elf32_PHdr>();
foreach (var section in loader.Sections
.Where(s => (s.Flags & ElfLoader.SHF_ALLOC) != 0))
{
Elf32_PHdr segment;
if (!mpToSegment.TryGetValue(section.Flags, out segment))
{
segment = new Elf32_PHdr();
segment.p_flags = SegmentAccess(section.Flags);
mpToSegment.Add(section.Flags, segment);
Segments.Add(segment);
}
segment.p_pmemsz = Align(segment.p_pmemsz, (uint)section.Alignment);
mpSectionToSegment.Add(section, segment);
if (section.Type != SectionHeaderType.SHT_NOBITS)
{
segment.p_pmemsz += (uint) section.Size;
segment.p_filesz += (uint) section.Size;
}
else
{
segment.p_pmemsz += (uint) section.Size;
segment.p_filesz += 0;
}
}
return mpSectionToSegment;
}
