private long ReadEncodedValue(DwarfBinaryReader reader, int encoding)
{
long base_addr;
switch (encoding & 0x70) {
case 0:
base_addr = 0;
break;
case (byte) DW_EH_PE.pcrel:
base_addr = vma + reader.Position;
break;
default:
throw new DwarfException (
reader.Bfd, "Unknown encoding `{0:x}' in CIE",
encoding);
}
long value;
switch (encoding & 0x0f) {
case (byte) DW_EH_PE.udata4:
value = reader.ReadUInt32 ();
break;
case (byte) DW_EH_PE.sdata4:
value = reader.ReadInt32 ();
break;
default:
throw new DwarfException (
reader.Bfd, "Unknown encoding `{0:x}' in CIE",
encoding);
}
return base_addr + value;
}
void read_cie(DwarfBinaryReader reader)
{
long length = reader.ReadInitialLength ();
long end_pos = reader.Position + length;
int id = reader.ReadInt32 ();
bool is_cie;
if (frame.is_ehframe)
is_cie = id == 0;
else
is_cie = id == -1;
if (!is_cie)
throw new InvalidOperationException ();
int version = reader.ReadByte ();
if (version != 1)
throw new DwarfException (
reader.Bfd, "Unknown version {0} in CIE",
version);
string augmentation = reader.ReadString ();
if (augmentation.StartsWith ("eh")) {
reader.ReadAddress ();
augmentation = augmentation.Substring (2);
}
code_alignment = reader.ReadLeb128 ();
data_alignment = reader.ReadSLeb128 ();
return_register = reader.ReadByte ();
for (int pos = 0; pos < augmentation.Length; pos++) {
if (augmentation [pos] == 'z') {
reader.ReadLeb128 ();
// has_z_augmentation = true;
continue;
}
if (augmentation [pos] == 'L')
continue;
else if (augmentation [pos] == 'R') {
encoding = reader.ReadByte ();
continue;
}
else if (augmentation [pos] == 'P') {
continue;
}
throw new DwarfException (
reader.Bfd, "Unknown augmentation `{0}' in CIE",
augmentation[pos]);
}
columns = new Column [return_register + 2];
for (int i = 0; i < columns.Length; i++)
columns [i] = new Column (State.Undefined);
Entry entry = new Entry (this);
entry.Read (reader, end_pos);
reader.Position = end_pos;
}
Hashtable read_pubtypes()
{
if (debug_pubtypes_reader == null)
return null;
DwarfBinaryReader reader = new DwarfBinaryReader (
bfd, (TargetBlob) debug_pubtypes_reader.Data, Is64Bit);
Hashtable names = Hashtable.Synchronized (new Hashtable ());
while (!reader.IsEof) {
long length = reader.ReadInitialLength ();
long stop = reader.Position + length;
int version = reader.ReadInt16 ();
long debug_offset = reader.ReadOffset ();
reader.ReadOffset ();
if (version != 2)
throw new DwarfException (
bfd, "Wrong version in .debug_pubtypes: {0}",
version);
while (reader.Position < stop) {
long offset = reader.ReadInt32 ();
if (offset == 0)
break;
string name = reader.ReadString ();
if (!names.Contains (name))
names.Add (name, new NameEntry (debug_offset, offset));
}
}
return names;
}
