protected void WriteSymbolSection(Section section)
{
Debug.Assert(section == symbolSection);
// first entry is completely filled with zeros
writer.WriteZeroBytes(SymbolEntry.GetEntrySize(linkerFormatType));
uint count = 1;
foreach (var symbol in linker.Symbols)
{
var symbolEntry = new SymbolEntry()
{
Name = AddToStringTable(symbol.Name),
Value = symbol.VirtualAddress,
Size = symbol.Size,
SymbolBinding = SymbolBinding.Global,
SymbolVisibility = SymbolVisibility.Default,
SymbolType = symbol.SectionKind == SectionKind.Text ? SymbolType.Function : SymbolType.Object,
SectionHeaderTableIndex = GetSection(symbol.SectionKind).Index
};
symbolEntry.Write(linkerFormatType, writer);
symbolTableOffset.Add(symbol, count);
count++;
}
section.Size = (uint)(count * SymbolEntry.GetEntrySize(linkerFormatType));
}
private Stream EmitSymbolSection()
{
var stream = new MemoryStream();
var writer = new BinaryWriter(stream);
var emitSymbols = Linker.LinkerSettings.Symbols;
// first entry is completely filled with zeros
writer.WriteZeroBytes(SymbolEntry.GetEntrySize(LinkerFormatType));
uint count = 1;
foreach (var symbol in Linker.Symbols)
{
if (symbol.SectionKind == SectionKind.Unknown && symbol.LinkRequests.Count == 0)
{
continue;
}
Debug.Assert(symbol.SectionKind != SectionKind.Unknown, "symbol.SectionKind != SectionKind.Unknown");
if (!(symbol.IsExternalSymbol || emitSymbols))
{
continue;
}
if (symbol.VirtualAddress == 0)
{
continue;
}
if (symbol.Size == 0)
{
continue;
}
var name = GetFinalSymboName(symbol);
var symbolEntry = new SymbolEntry()
{
Name = AddToStringTable(name),
Value = symbol.VirtualAddress,
Size = symbol.Size,
SymbolBinding = SymbolBinding.Global,
SymbolVisibility = SymbolVisibility.Default,
SymbolType = symbol.SectionKind == SectionKind.Text ? SymbolType.Function : SymbolType.Object,
SectionHeaderTableIndex = GetSection(symbol.SectionKind).Index
};
symbolEntry.Write(LinkerFormatType, writer);
symbolTableOffset.Add(symbol, count);
count++;
}
return(stream);
}
private void CreateSymbolSection()
{
symbolSection.Name = ".symtab";
symbolSection.Type = SectionType.SymbolTable;
symbolSection.AddressAlignment = linker.SectionAlignment;
symbolSection.EntrySize = SymbolEntry.GetEntrySize(linkerFormatType);
symbolSection.Link = stringSection;
symbolSection.EmitMethod = WriteSymbolSection;
AddSection(symbolSection);
stringSection.AddDependency(symbolSection);
sectionHeaderStringSection.AddDependency(symbolSection);
}
private void RegisterSymbolSection()
{
//if (!Linker.LinkerSettings.Symbols)
// return;
symbolSection.Name = ".symtab";
symbolSection.Type = SectionType.SymbolTable;
symbolSection.EntrySize = SymbolEntry.GetEntrySize(LinkerFormatType);
symbolSection.Link = stringSection;
symbolSection.Emitter = () => { return(EmitSymbolSection()); };
RegisterSection(symbolSection);
stringSection.AddDependency(symbolSection);
sectionHeaderStringSection.AddDependency(symbolSection);
}
private void WriteSymbolSection(Section section, BinaryWriter writer)
{
Debug.Assert(section == symbolSection);
// first entry is completely filled with zeros
writer.WriteZeroBytes(SymbolEntry.GetEntrySize(linkerFormatType));
uint count = 1;
foreach (var symbol in linker.Symbols)
{
if (symbol.SectionKind == SectionKind.Unknown && symbol.LinkRequests.Count == 0)
{
continue;
}
Debug.Assert(symbol.SectionKind != SectionKind.Unknown, "symbol.SectionKind != SectionKind.Unknown");
if (!(symbol.IsExternalSymbol || linker.EmitAllSymbols))
{
continue;
}
var symbolEntry = new SymbolEntry()
{
Name = AddToStringTable(symbol.ExternalSymbolName ?? symbol.Name),
Value = symbol.VirtualAddress,
Size = symbol.Size,
SymbolBinding = SymbolBinding.Global,
SymbolVisibility = SymbolVisibility.Default,
SymbolType = symbol.SectionKind == SectionKind.Text ? SymbolType.Function : SymbolType.Object,
SectionHeaderTableIndex = GetSection(symbol.SectionKind).Index
};
symbolEntry.Write(linkerFormatType, writer);
symbolTableOffset.Add(symbol, count);
count++;
}
section.Size = count * SymbolEntry.GetEntrySize(linkerFormatType);
}