public override void DoCommand(binary_library.IBinaryFile output, IList <binary_library.IBinaryFile> inputs, LinkerScriptState state)
{
state.prev_section = state.cur_section;
binary_library.ISection section = output.CreateSection();
section.Name = name;
section.AddrAlign = addr_align;
section.IsAlloc = isalloc;
section.IsWriteable = iswrite;
section.IsExecutable = isexec;
section.HasData = hasdata;
section.LoadAddress = state.cur_offset;
state.cur_section = section;
state.data[section] = new List <byte>();
state.cur_sect_offset = 0;
if (hasdata && size < 0)
{
switch (size)
{
case -1:
// elf dynamic
if (output.Bitness == Bitness.Bits64)
{
state.cur_section.Length = 464;
}
else
{
state.cur_section.Length = 192;
}
break;
case -2:
// elf hash
int ssize = 8; // nbuckets + nchain
ssize += binary_library.elf.ElfFile.CalculateBucketCount(output.GetSymbolCount()) * 4;
ssize += output.GetSymbolCount() * 4;
state.cur_section.Length = ssize;
break;
}
}
}
public static void OutputStaticFields(metadata.TypeSpec ts,
target.Target t, binary_library.IBinaryFile of,
MetadataStream base_m = null,
binary_library.ISection os = null,
binary_library.ISection tlsos = null)
{
// Don't compile if not for this architecture
if (!t.IsTypeValid(ts))
{
return;
}
int align = 1;
if (ts.SimpleType == 0)
{
align = GetTypeAlignment(ts, t, true);
}
if (os == null)
{
os = of.GetDataSection();
}
os.Align(t.GetPointerSize());
os.Align(align);
ulong offset = (ulong)os.Data.Count;
ulong tl_offset = 0;
if (tlsos != null)
{
tl_offset = (ulong)tlsos.Data.Count;
}
int cur_offset = 0;
int cur_tloffset = 0;
/* is_initialized */
for (int i = 0; i < t.psize; i++)
{
os.Data.Add(0);
}
cur_offset += t.psize;
/* Iterate through methods looking for requested
* one */
var first_fdef = ts.m.GetIntEntry(MetadataStream.tid_TypeDef,
ts.tdrow, 4);
var last_fdef = ts.m.GetLastFieldDef(ts.tdrow);
for (uint fdef_row = first_fdef; fdef_row < last_fdef; fdef_row++)
{
// Ensure field is static or not as required
var flags = ts.m.GetIntEntry(MetadataStream.tid_Field,
(int)fdef_row, 0);
if ((flags & 0x10) == 0x10)
{
// Increment by type size
var fsig = (int)ts.m.GetIntEntry(MetadataStream.tid_Field,
(int)fdef_row, 2);
var ft = ts.m.GetFieldType(ref fsig, ts.gtparams, null);
var ft_size = t.GetSize(ft);
ft_size = util.util.align(ft_size, align);
bool is_tls = ts.m.thread_local_fields[(int)fdef_row];
ISection cur_os = os;
if (is_tls)
{
if (tlsos == null)
{
throw new NotSupportedException("No thread-local section provided");
}
cur_os = tlsos;
}
/* See if there is any data defined as an rva */
var rva = ts.m.fieldrvas[(int)fdef_row];
if (rva != 0)
{
var rrva = (int)ts.m.ResolveRVA(rva);
for (int i = 0; i < ft_size; i++)
{
cur_os.Data.Add(ts.m.file.ReadByte(rrva++));
}
}
else
{
for (int i = 0; i < ft_size; i++)
{
cur_os.Data.Add(0);
}
}
/* Output any additional defined symbols */
foreach (var alias in ts.m.GetFieldAliases((int)fdef_row))
{
var asym = of.CreateSymbol();
asym.Name = alias;
asym.Offset = offset + (ulong)cur_offset;
asym.Type = binary_library.SymbolType.Global;
asym.ObjectType = binary_library.SymbolObjectType.Object;
cur_os.AddSymbol(asym);
asym.Size = ft_size;
if (base_m != null && ts.m != base_m)
{
asym.Type = binary_library.SymbolType.Weak;
}
}
if (is_tls)
{
cur_tloffset += ft_size;
}
else
{
cur_offset += ft_size;
}
}
}
if (cur_offset > 0)
{
/* Add symbol */
var sym = of.CreateSymbol();
sym.Name = ts.m.MangleType(ts) + "S";
sym.Offset = offset;
sym.Type = binary_library.SymbolType.Global;
sym.ObjectType = binary_library.SymbolObjectType.Object;
os.AddSymbol(sym);
sym.Size = os.Data.Count - (int)offset;
if (base_m != null && ts.m != base_m)
{
sym.Type = binary_library.SymbolType.Weak;
}
}
if (cur_tloffset > 0)
{
/* Add thread local symbol */
var sym = of.CreateSymbol();
sym.Name = ts.m.MangleType(ts) + "ST";
sym.Offset = tl_offset;
sym.Type = binary_library.SymbolType.Global;
sym.ObjectType = binary_library.SymbolObjectType.Object;
tlsos.AddSymbol(sym);
sym.Size = tlsos.Data.Count - (int)tl_offset;
if (base_m != null && ts.m != base_m)
{
sym.Type = binary_library.SymbolType.Weak;
}
}
}
public override void DoCommand(binary_library.IBinaryFile output, IList <binary_library.IBinaryFile> inputs, LinkerScriptState state)
{
// Generate a list of sections to include
IList <binary_library.ISection> sections = null;
switch (selection)
{
case InputFileSelection.All:
sections = new List <binary_library.ISection>();
foreach (binary_library.IBinaryFile ifile in inputs)
{
binary_library.ISection sect = ifile.FindSection(input_section);
if (sect != null)
{
sections.Add(sect);
}
}
break;
case InputFileSelection.AllNotSpecified:
sections = new List <binary_library.ISection>();
foreach (binary_library.IBinaryFile ifile in inputs)
{
binary_library.ISection sect = ifile.FindSection(input_section);
if ((sect != null) && (!state.included_sections.Contains(sect)))
{
sections.Add(sect);
}
}
break;
case InputFileSelection.Specific:
sections = new List <binary_library.ISection>();
foreach (binary_library.IBinaryFile ifile in inputs)
{
System.IO.FileInfo fi = new System.IO.FileInfo(ifile.Filename);
if (fi.Exists && (fi.Name == input_file))
{
binary_library.ISection sect = ifile.FindSection(input_section);
if ((sect != null) && (!state.included_sections.Contains(sect)))
{
sections.Add(sect);
}
}
}
break;
}
// Write the sections data to the section cache and its symbols to the output file
binary_library.ISection osect = state.cur_section;
foreach (binary_library.ISection sect in sections)
{
// Write the data
if (osect.HasData)
{
if (sect.HasData)
{
foreach (byte b in sect.Data)
{
state.data[osect].Add(b);
}
}
else
{
for (int i = 0; i < sect.Length; i++)
{
state.data[osect].Add(0);
}
}
}
else
{
osect.Length += sect.Length;
}
// Write the symbols
int sym_count = sect.GetSymbolCount();
for (int i = 0; i < sym_count; i++)
{
ISymbol sym = sect.GetSymbol(i);
ISymbol new_sym = output.CreateSymbol();
new_sym.Name = sym.Name;
new_sym.Offset = state.cur_sect_offset + sym.Offset;
new_sym.Size = sym.Size;
new_sym.Type = sym.Type;
new_sym.ObjectType = sym.ObjectType;
osect.AddSymbol(new_sym);
}
// Save where this section is loaded to
state.input_section_locations[sect] = new LinkerScriptState.InputSectionLocation {
OutputSection = osect, OutputSectionOffset = state.cur_sect_offset
};
state.cur_sect_offset += (ulong)sect.Length;
}
// Add the sections to the list of included sections
state.included_sections.AddRange(sections);
}
