public int GetSignatureAddress(metadata.TypeSpec.FullySpecSignature sig, target.Target t, TysilaState s)
{
var ptr_size = t.GetCTSize(ir.Opcode.ct_object);
while (str_tab.Count % ptr_size != 0)
{
str_tab.Add(0);
}
int ret = str_tab.Count;
// first is type of signature
str_tab.AddRange(t.IntPtrArray(BitConverter.GetBytes((int)sig.Type)));
// then any extra data if necessary
switch (sig.Type)
{
case metadata.Spec.FullySpecSignature.FSSType.Field:
// For fields with static data we insert it here
AddFieldSpecFields(sig.OriginalSpec as MethodSpec, str_tab, t, s);
break;
case Spec.FullySpecSignature.FSSType.Type:
AddTypeSpecFields(sig.OriginalSpec as TypeSpec, str_tab, t, s);
break;
}
// then is length of module references
str_tab.AddRange(t.IntPtrArray(BitConverter.GetBytes(sig.Modules.Count)));
// then module references
foreach (var mod in sig.Modules)
{
sig_metadata_addrs[str_tab.Count] = mod.AssemblyName;
for (int i = 0; i < ptr_size; i++)
{
str_tab.Add(0);
}
}
// then signature
str_tab.AddRange(sig.Signature);
return(ret);
}
private void AddFieldSpecFields(MethodSpec fs, List <byte> str_tab, target.Target t, TysilaState s)
{
/* Field specs have two special fields:
*
* IntPtr field_size
* IntPtr field_data
*
* where field_data may be null if no .data member is specified for the field
*/
// read field signature to get the type of the field
var sig_idx = fs.msig;
sig_idx = fs.m.GetFieldSigTypeIndex(sig_idx);
var ts = fs.m.GetTypeSpec(ref sig_idx, fs.gtparams, null);
var fsize = t.GetSize(ts);
str_tab.AddRange(t.IntPtrArray(BitConverter.GetBytes(fsize)));
// now determine if the field has an rva associated with it
int rva_id = 0;
for (int i = 1; i <= fs.m.table_rows[MetadataStream.tid_FieldRVA]; i++)
{
var field_idx = fs.m.GetIntEntry(MetadataStream.tid_FieldRVA, i, 1);
if (field_idx == fs.mdrow)
{
rva_id = i;
break;
}
}
// rva id
if (rva_id != 0)
{
// TODO checks in CIL II 22.18
var rva = fs.m.GetIntEntry(MetadataStream.tid_FieldRVA, rva_id, 0);
var offset = fs.m.ResolveRVA(rva);
sig_metadata_addrs[str_tab.Count] = fs.m.AssemblyName;
sig_metadata_addends[str_tab.Count] = offset;
}
for (int i = 0; i < t.psize; i++)
{
str_tab.Add(0);
}
}
