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//
// Mono.ILASM.CodeGen.cs
//
// Author(s):
// Sergey Chaban (serge@wildwestsoftware.com)
// Jackson Harper (Jackson@LatitudeGeo.com)
//
// (C) Sergey Chaban
// (C) 2003 Jackson Harper, All rights reserved
//
using PEAPI;
using System;
using System.IO;
using System.Collections;
using System.Reflection;
using System.Reflection.Emit;
using System.Text;
using System.Security;
using SSPermissionSet = System.Security.PermissionSet;
using MIPermissionSet = Mono.ILASM.PermissionSet;
using MIAssembly = Mono.ILASM.Assembly;
namespace Mono.ILASM {
public class CodeGen {
private PEFile pefile;
private ExternAssembly current_assemblyref;
private ExternModule current_moduleref;
private string current_namespace;
private TypeDef current_typedef;
private MethodDef current_methoddef;
private ArrayList typedef_stack;
private int typedef_stack_top;
private SymbolWriter symwriter;
private ICustomAttrTarget current_customattrtarget;
private IDeclSecurityTarget current_declsectarget;
private PEAPI.NativeType current_field_native_type;
private MIAssembly this_assembly;
private TypeManager type_manager;
private ExternTable extern_table;
private Hashtable global_field_table;
private Hashtable global_method_table;
private Hashtable global_methodref_table;
private Hashtable global_fieldref_table;
private Hashtable data_table;
private FileRef file_ref;
private ArrayList manifestResources;
private Hashtable typeref_table;
private ArrayList defcont_list;
private int sub_system;
private int cor_flags;
private long image_base;
private long stack_reserve;
private string output_file;
private string debug_file;
private bool is_dll;
private bool entry_point;
private Module this_module;
public CodeGen (string output_file, bool is_dll, bool debugging_info)
{
this.output_file = output_file;
this.is_dll = is_dll;
if (debugging_info)
symwriter = new SymbolWriter (CreateDebugFile (output_file));
type_manager = new TypeManager (this);
extern_table = new ExternTable ();
typedef_stack = new ArrayList ();
typedef_stack_top = 0;
global_field_table = new Hashtable ();
global_method_table = new Hashtable ();
data_table = new Hashtable ();
defcont_list = new ArrayList ();
sub_system = -1;
cor_flags = -1;
image_base = -1;
stack_reserve = -1;
entry_point = false;
this_module = null;
}
private string CreateDebugFile (string output_file)
{
int ext_index = output_file.LastIndexOf ('.');
if (ext_index == -1)
ext_index = output_file.Length;
return String.Format ("{0}.{1}", output_file.Substring (0, ext_index),
"mdb");
}
public PEFile PEFile {
get { return pefile; }
}
public SymbolWriter SymbolWriter {
get { return symwriter; }
}
public string CurrentNameSpace {
get { return current_namespace; }
set { current_namespace = value; }
}
public TypeDef CurrentTypeDef {
get { return current_typedef; }
}
public MethodDef CurrentMethodDef {
get { return current_methoddef; }
}
public ExternAssembly CurrentAssemblyRef {
get { return current_assemblyref; }
}
public ExternModule CurrentModuleRef {
get { return current_moduleref; }
}
public ICustomAttrTarget CurrentCustomAttrTarget {
get { return current_customattrtarget; }
set { current_customattrtarget = value; }
}
public IDeclSecurityTarget CurrentDeclSecurityTarget {
get { return current_declsectarget; }
set { current_declsectarget = value; }
}
public ExternTable ExternTable {
get { return extern_table; }
}
public TypeManager TypeManager {
get { return type_manager; }
}
public bool HasEntryPoint {
get { return entry_point; }
set {
/* if (!value) error: unsetting entrypoint ? */
if (entry_point)
Report.Error ("Multiple .entrypoint declarations.");
entry_point = value;
}
}
public TypeRef GetTypeRef (string name)
{
TypeRef tr = null;
if (typeref_table == null)
typeref_table = new Hashtable ();
else
tr = typeref_table [name] as TypeRef;
if (tr == null) {
tr = new TypeRef (name, false, null);
typeref_table [name] = tr;
}
return tr;
}
public GlobalMethodRef GetGlobalMethodRef (BaseTypeRef ret_type, PEAPI.CallConv call_conv,
string name, BaseTypeRef[] param, int gen_param_count)
{
string key = MethodDef.CreateSignature (ret_type, name, param, gen_param_count);
GlobalMethodRef methref = null;
if (global_methodref_table == null)
global_methodref_table = new Hashtable ();
else
methref = (GlobalMethodRef) global_methodref_table [key];
if (methref == null) {
methref = new GlobalMethodRef (ret_type, call_conv, name, param, gen_param_count);
global_methodref_table [key] = methref;
}
return methref;
}
public GlobalFieldRef GetGlobalFieldRef (BaseTypeRef ret_type, string name)
{
string key = ret_type.FullName + name;
GlobalFieldRef fieldref = null;
if (global_fieldref_table == null)
global_fieldref_table = new Hashtable ();
else
fieldref = (GlobalFieldRef) global_fieldref_table [key];
if (fieldref == null) {
fieldref = new GlobalFieldRef (ret_type, name);
global_fieldref_table [key] = fieldref;
}
return fieldref;
}
public void SetSubSystem (int sub_system)
{
this.sub_system = sub_system;
}
public void SetCorFlags (int cor_flags)
{
this.cor_flags = cor_flags;
}
public void SetImageBase (long image_base)
{
this.image_base = image_base;
}
public void SetStackReserve (long stack_reserve)
{
this.stack_reserve = stack_reserve;
}
public void SetThisAssembly (string name, PEAPI.AssemAttr attr)
{
if (this_assembly != null && this_assembly.Name != name)
Report.Error ("Multiple assembly declarations");
this_assembly = new Assembly (name);
this_assembly.SetAssemblyAttr (attr);
if (name != "mscorlib")
ExternTable.AddCorlib ();
}
public void SetModuleName (string module_name)
{
this_module = new Module (module_name);
CurrentCustomAttrTarget = this_module;
}
public void SetFileRef (FileRef file_ref)
{
this.file_ref = file_ref;
}
public MIAssembly ThisAssembly {
get { return this_assembly; }
}
public bool IsThisAssembly (string name)
{
return (this_assembly != null && name == this_assembly.Name);
}
public Module ThisModule {
get { return this_module; }
}
public bool IsThisModule (string name)
{
return (this_module != null && name == this_module.Name);
}
public void BeginSourceFile (string name)
{
if (symwriter != null)
symwriter.BeginSourceFile (name);
}
public void EndSourceFile ()
{
if (symwriter != null)
symwriter.EndSourceFile ();
}
public void BeginTypeDef (TypeAttr attr, string name, BaseClassRef parent,
ArrayList impl_list, Location location, GenericParameters gen_params)
{
TypeDef outer = null;
string cache_name = CacheName (name);
if (typedef_stack_top > 0) {
StringBuilder sb = new StringBuilder ();
for (int i = 0; i < typedef_stack_top; i++){
outer = (TypeDef) typedef_stack [i];
if (i == 0)
/* Use FullName for outermost class to get the
namespace also */
sb.Append (outer.FullName);
else
sb.Append (outer.Name);
sb.Append ("/");
}
sb.Append (name);
cache_name = sb.ToString ();
}
TypeDef typedef = type_manager[cache_name];
if (typedef != null) {
// Class head is allready defined, we are just reopening the class
current_customattrtarget = current_typedef = typedef;
current_declsectarget = typedef;
typedef_stack.Add (current_typedef);
typedef_stack_top++;
return;
}
typedef = new TypeDef (attr, current_namespace,
name, parent, impl_list, location, gen_params, outer);
type_manager[cache_name] = typedef;
current_customattrtarget = current_typedef = typedef;
current_declsectarget = typedef;
typedef_stack.Add (typedef);
typedef_stack_top++;
}
public void AddFieldMarshalInfo (PEAPI.NativeType native_type)
{
current_field_native_type = native_type;
}
public void AddFieldDef (FieldDef fielddef)
{
if (current_field_native_type != null) {
fielddef.AddMarshalInfo (current_field_native_type);
current_field_native_type = null;
}
if (current_typedef != null) {
current_typedef.AddFieldDef (fielddef);
} else {
global_field_table.Add (
new DictionaryEntry (fielddef.Name, fielddef.Type.FullName),
fielddef);
}
}
public void AddDataDef (DataDef datadef)
{
if (data_table [datadef.Name] != null)
Report.Error ("Duplicate global label '" + datadef.Name + "'");
data_table [datadef.Name] = datadef;
}
public void AddManifestResource (ManifestResource mr)
{
if (manifestResources == null)
manifestResources = new ArrayList ();
manifestResources.Add (mr);
}
public PEAPI.DataConstant GetDataConst (string name)
{
DataDef def = (DataDef) data_table [name];
if (def == null)
return null;
return (DataConstant) def.PeapiConstant;
}
public void BeginMethodDef (MethodDef methoddef)
{
if (current_typedef != null) {
current_typedef.AddMethodDef (methoddef);
} else {
global_method_table.Add (methoddef.Signature,
methoddef);
}
current_customattrtarget = current_methoddef = methoddef;
current_declsectarget = methoddef;
}
public void EndMethodDef (Location location)
{
if (symwriter != null)
symwriter.EndMethod (location);
current_methoddef = null;
}
public void EndTypeDef ()
{
typedef_stack_top--;
typedef_stack.RemoveAt (typedef_stack_top);
if (typedef_stack_top > 0)
current_typedef = (TypeDef) typedef_stack [typedef_stack_top-1];
else
current_typedef = null;
}
public void BeginAssemblyRef (string name, AssemblyName asmb_name, PEAPI.AssemAttr attr)
{
current_customattrtarget = current_assemblyref = ExternTable.AddAssembly (name, asmb_name, attr);
current_declsectarget = current_assemblyref;
}
public void EndAssemblyRef ()
{
current_assemblyref = null;
current_customattrtarget = null;
current_declsectarget = null;
}
public void AddToDefineContentsList (TypeDef typedef)
{
defcont_list.Add (typedef);
}
public void AddPermission (PEAPI.SecurityAction sec_action, object perm)
{
if (CurrentDeclSecurityTarget == null)
return;
AddPermission (sec_action, perm, CurrentDeclSecurityTarget.DeclSecurity);
}
private void AddPermission (PEAPI.SecurityAction sec_action, object perm, DeclSecurity decl_sec)
{
SSPermissionSet ps = perm as SSPermissionSet;
if (ps != null) {
decl_sec.AddPermissionSet (sec_action, ps);
return;
}
IPermission iper = perm as IPermission;
if (iper != null) {
decl_sec.AddPermission (sec_action, iper);
return;
}
MIPermissionSet ps20 = perm as MIPermissionSet;
if (ps20 != null) {
decl_sec.AddPermissionSet (sec_action, ps20);
return;
}
}
public void Write ()
{
FileStream out_stream = null;
try {
if (ThisModule == null)
this_module = new Module (Path.GetFileName (output_file));
out_stream = new FileStream (output_file, FileMode.Create, FileAccess.Write);
pefile = new PEFile (ThisAssembly != null ? ThisAssembly.Name : null, ThisModule.Name, is_dll, ThisAssembly != null, null, out_stream);
PEAPI.Assembly asmb = pefile.GetThisAssembly ();
ThisModule.PeapiModule = pefile.GetThisModule ();
if (file_ref != null)
file_ref.Resolve (this);
extern_table.Resolve (this);
type_manager.DefineAll ();
if (manifestResources != null) {
foreach (ManifestResource mr in manifestResources)
pefile.AddManifestResource (mr);
}
foreach (FieldDef fielddef in global_field_table.Values) {
fielddef.Define (this);
}
foreach (MethodDef methoddef in global_method_table.Values) {
methoddef.Define (this);
}
foreach (TypeDef typedef in defcont_list) {
typedef.DefineContents (this);
}
if (ThisAssembly != null)
ThisAssembly.Resolve (this, pefile.GetThisAssembly ());
ThisModule.Resolve (this, pefile.GetThisModule ());
if (sub_system != -1)
pefile.SetSubSystem ((PEAPI.SubSystem) sub_system);
if (cor_flags != -1)
pefile.SetCorFlags (cor_flags);
if (stack_reserve != -1)
pefile.SetStackReserve (stack_reserve);
pefile.WritePEFile ();
if (symwriter != null) {
Guid guid = pefile.GetThisModule ().Guid;
symwriter.Write (guid);
}
} finally {
if (out_stream != null)
out_stream.Close ();
}
}
public PEAPI.Method ResolveMethod (string signature)
{
MethodDef methoddef = (MethodDef) global_method_table[signature];
if (methoddef == null)
Report.Error ("Unable to resolve global method : " + signature);
return methoddef.Resolve (this);
}
public PEAPI.Method ResolveVarargMethod (string signature,
CodeGen code_gen, PEAPI.Type[] opt)
{
MethodDef methoddef = (MethodDef) global_method_table[signature];
methoddef.Resolve (code_gen);
return methoddef.GetVarargSig (opt);
}
public PEAPI.Field ResolveField (string name, string type_name)
{
FieldDef fielddef = (FieldDef) global_field_table[new DictionaryEntry (name, type_name)];
if (fielddef == null)
Report.Error (String.Format ("Unable to resolve global field : {0} {1}", type_name, name));
return fielddef.Resolve (this);
}
private string CacheName (string name)
{
if (current_namespace == null ||
current_namespace == String.Empty)
return name;
return current_namespace + "." + name;
}
}
}
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