protected override void Read(DwarfReader reader)
{
Offset = reader.Offset;
var unitLength = reader.ReadUnitLength();
Is64BitEncoding = reader.Is64BitEncoding;
Version = reader.ReadU16();
if (Version != 2)
{
reader.Diagnostics.Error(DiagnosticId.DWARF_ERR_VersionNotSupported, $"Version {Version} for .debug_aranges not supported");
return;
}
DebugInfoOffset = reader.ReadUIntFromEncoding();
AddressSize = reader.ReadAddressSize();
var segment_selector_size = (DwarfAddressSize)reader.ReadU8();
SegmentSelectorSize = segment_selector_size;
var align = (ulong)segment_selector_size + (ulong)AddressSize * 2;
// SPECS 7.21: The first tuple following the header in each set begins at an offset that is a multiple of the size of a single tuple
reader.Offset = AlignHelper.AlignToUpper(reader.Offset, align);
while (true)
{
ulong segment = 0;
switch (segment_selector_size)
{
case DwarfAddressSize.Bit8:
segment = reader.ReadU8();
break;
case DwarfAddressSize.Bit16:
segment = reader.ReadU16();
break;
case DwarfAddressSize.Bit32:
segment = reader.ReadU32();
break;
case DwarfAddressSize.Bit64:
segment = reader.ReadU64();
break;
case DwarfAddressSize.None:
break;
}
ulong address = 0;
ulong length = 0;
switch (AddressSize)
{
case DwarfAddressSize.Bit8:
address = reader.ReadU8();
length = reader.ReadU8();
break;
case DwarfAddressSize.Bit16:
address = reader.ReadU16();
length = reader.ReadU16();
break;
case DwarfAddressSize.Bit32:
address = reader.ReadU32();
length = reader.ReadU32();
break;
case DwarfAddressSize.Bit64:
address = reader.ReadU64();
length = reader.ReadU64();
break;
}
if (segment == 0 && address == 0 && length == 0)
{
break;
}
Ranges.Add(new DwarfAddressRange(segment, address, length));
}
Size = reader.Offset - Offset;
}