public LineNumberTable GetLineNumberTable()
{
lock (SymbolFile) {
if (lnt != null)
{
return(lnt);
}
if (LineNumberTableOffset == 0)
{
return(null);
}
MyBinaryReader reader = SymbolFile.BinaryReader;
long old_pos = reader.BaseStream.Position;
reader.BaseStream.Position = LineNumberTableOffset;
lnt = LineNumberTable.Read(SymbolFile, reader, (flags & Flags.ColumnsInfoIncluded) != 0, (flags & Flags.EndInfoIncluded) != 0);
reader.BaseStream.Position = old_pos;
return(lnt);
}
}
MonoSymbolFile(Stream stream)
{
reader = new MyBinaryReader(stream);
try {
long magic = reader.ReadInt64();
int major_version = reader.ReadInt32();
int minor_version = reader.ReadInt32();
if (magic != OffsetTable.Magic)
{
throw new MonoSymbolFileException("Symbol file is not a valid");
}
if (major_version != OffsetTable.MajorVersion)
{
throw new MonoSymbolFileException(
"Symbol file has version {0} but expected {1}", major_version, OffsetTable.MajorVersion);
}
if (minor_version != OffsetTable.MinorVersion)
{
throw new MonoSymbolFileException("Symbol file has version {0}.{1} but expected {2}.{3}",
major_version, minor_version,
OffsetTable.MajorVersion, OffsetTable.MinorVersion);
}
MajorVersion = major_version;
MinorVersion = minor_version;
guid = new Guid(reader.ReadBytes(16));
ot = new OffsetTable(reader, major_version, minor_version);
} catch (Exception e) {
throw new MonoSymbolFileException("Cannot read symbol file", e);
}
source_file_hash = new Dictionary <int, SourceFileEntry> ();
compile_unit_hash = new Dictionary <int, CompileUnitEntry> ();
}
internal ScopeVariable(MyBinaryReader reader)
{
Scope = reader.ReadLeb128();
Index = reader.ReadLeb128();
}
internal CapturedScope(MyBinaryReader reader)
{
Scope = reader.ReadLeb128();
CapturedName = reader.ReadString();
}
internal CapturedVariable(MyBinaryReader reader)
{
Name = reader.ReadString();
CapturedName = reader.ReadString();
Kind = (CapturedKind)reader.ReadByte();
}
internal LocalVariableEntry(MonoSymbolFile file, MyBinaryReader reader)
{
Index = reader.ReadLeb128();
Name = reader.ReadString();
BlockIndex = reader.ReadLeb128();
}
void DoRead(MonoSymbolFile file, MyBinaryReader br, bool includesColumns, bool includesEnds)
{
var lines = new List <LineNumberEntry> ();
bool is_hidden = false, modified = false;
int stm_line = 1, stm_offset = 0, stm_file = 1;
while (true)
{
byte opcode = br.ReadByte();
if (opcode == 0)
{
byte size = br.ReadByte();
long end_pos = br.BaseStream.Position + size;
opcode = br.ReadByte();
if (opcode == DW_LNE_end_sequence)
{
if (modified)
{
lines.Add(new LineNumberEntry(
stm_file, stm_line, -1, stm_offset, is_hidden));
}
break;
}
else if (opcode == DW_LNE_MONO_negate_is_hidden)
{
is_hidden = !is_hidden;
modified = true;
}
else if ((opcode >= DW_LNE_MONO__extensions_start) &&
(opcode <= DW_LNE_MONO__extensions_end))
{
; // reserved for future extensions
}
else
{
throw new MonoSymbolFileException("Unknown extended opcode {0:x}", opcode);
}
br.BaseStream.Position = end_pos;
continue;
}
else if (opcode < OpcodeBase)
{
switch (opcode)
{
case DW_LNS_copy:
lines.Add(new LineNumberEntry(
stm_file, stm_line, -1, stm_offset, is_hidden));
modified = false;
break;
case DW_LNS_advance_pc:
stm_offset += br.ReadLeb128();
modified = true;
break;
case DW_LNS_advance_line:
stm_line += br.ReadLeb128();
modified = true;
break;
case DW_LNS_set_file:
stm_file = br.ReadLeb128();
modified = true;
break;
case DW_LNS_const_add_pc:
stm_offset += MaxAddressIncrement;
modified = true;
break;
default:
throw new MonoSymbolFileException(
"Unknown standard opcode {0:x} in LNT",
opcode);
}
}
else
{
opcode -= OpcodeBase;
stm_offset += opcode / LineRange;
stm_line += LineBase + (opcode % LineRange);
lines.Add(new LineNumberEntry(
stm_file, stm_line, -1, stm_offset, is_hidden));
modified = false;
}
}
_line_numbers = lines.ToArray();
if (includesColumns)
{
for (int i = 0; i < _line_numbers.Length; ++i)
{
var ln = _line_numbers[i];
if (ln.Row >= 0)
{
ln.Column = br.ReadLeb128();
}
}
}
if (includesEnds)
{
for (int i = 0; i < _line_numbers.Length; ++i)
{
var ln = _line_numbers[i];
int row = br.ReadLeb128();
if (row == 0xffffff)
{
ln.EndRow = -1;
ln.EndColumn = -1;
}
else
{
ln.EndRow = ln.Row + row;
ln.EndColumn = br.ReadLeb128();
}
}
}
}
