/// <summary>
/// Initializes a new <see cref="BiosFunction"/> instance in the case of a missing function.
/// </summary>
/// <param name="module">Module containing the function.</param>
/// <param name="nid">Unique ID of the function.</param>
public BiosFunction(BiosModule module, uint nid)
{
this.Module = module;
this.NID = nid;
this.IsMissing = true;
this.IsStateless = true;
}
/// <summary>
/// Initializes a new <see cref="BiosFunction"/> instance with the given parameters.
/// </summary>
/// <param name="module">Module containing the function.</param>
/// <param name="moduleInstance">Current instance of the module containing the function.</param>
/// <param name="nid">Unique ID of the function.</param>
/// <param name="name">Human-friendly name of the function.</param>
/// <param name="isImplemented"><c>true</c> if the function is implemented.</param>
/// <param name="isStateless"><c>true</c> if the function does not change the BIOS state.</param>
/// <param name="nativeImplementationSuggested"><c>true</c> if a native implementation is suggested.</param>
/// <param name="dontTrace"><c>true</c> to not write this function to the trace.</param>
/// <param name="methodInfo"><see cref="MethodInfo"/> of the managed implementation of the function.</param>
/// <param name="nativePointer">Pointer to the native implementation of the function.</param>
public BiosFunction(BiosModule module, IModule moduleInstance, uint nid, string name, bool isImplemented, bool isStateless, bool nativeImplementationSuggested, bool dontTrace, MethodInfo methodInfo, IntPtr nativePointer)
{
this.Module = module;
this.ModuleInstance = moduleInstance;
this.NID = nid;
this.Name = name;
this.IsImplemented = isImplemented;
this.IsStateless = isStateless;
this.NativeImplementationSuggested = nativeImplementationSuggested;
this.DontTrace = dontTrace;
this.MethodInfo = methodInfo;
this.NativeMethod = nativePointer;
ParameterInfo[] ps = methodInfo.GetParameters();
if (ps.Length > 0)
{
this.ParameterCount = ps.Length;
if (ps[0].ParameterType == typeof(IMemory))
{
this.ParameterCount--;
this.UsesMemorySystem = true;
}
this.ParameterWidths = new BitArray(this.ParameterCount);
int offset = (this.UsesMemorySystem == true) ? 1 : 0;
for (int n = 0; n < (ps.Length - offset); n++)
{
ParameterWidths[n] = (ps[n + offset].ParameterType == typeof(long));
}
#if DEBUG
// Sanity check to make sure IMemory is always the first argument
if (this.UsesMemorySystem == false)
{
for (int n = 0; n < ps.Length; n++)
{
Debug.Assert(ps[n].ParameterType != typeof(IMemory));
}
}
#endif
}
}
/// <summary>
/// Initializes a new <see cref="BiosFunction"/> instance with the given parameters.
/// </summary>
/// <param name="module">Module containing the function.</param>
/// <param name="moduleInstance">Current instance of the module containing the function.</param>
/// <param name="nid">Unique ID of the function.</param>
/// <param name="name">Human-friendly name of the function.</param>
/// <param name="isImplemented"><c>true</c> if the function is implemented.</param>
/// <param name="isStateless"><c>true</c> if the function does not change the BIOS state.</param>
/// <param name="nativeImplementationSuggested"><c>true</c> if a native implementation is suggested.</param>
/// <param name="dontTrace"><c>true</c> to not write this function to the trace.</param>
/// <param name="methodInfo"><see cref="MethodInfo"/> of the managed implementation of the function.</param>
/// <param name="nativePointer">Pointer to the native implementation of the function.</param>
public BiosFunction( BiosModule module, IModule moduleInstance, uint nid, string name, bool isImplemented, bool isStateless, bool nativeImplementationSuggested, bool dontTrace, MethodInfo methodInfo, IntPtr nativePointer )
{
this.Module = module;
this.ModuleInstance = moduleInstance;
this.NID = nid;
this.Name = name;
this.IsImplemented = isImplemented;
this.IsStateless = isStateless;
this.NativeImplementationSuggested = nativeImplementationSuggested;
this.DontTrace = dontTrace;
this.MethodInfo = methodInfo;
this.NativeMethod = nativePointer;
ParameterInfo[] ps = methodInfo.GetParameters();
if( ps.Length > 0 )
{
this.ParameterCount = ps.Length;
if( ps[ 0 ].ParameterType == typeof( IMemory ) )
{
this.ParameterCount--;
this.UsesMemorySystem = true;
}
this.ParameterWidths = new BitArray( this.ParameterCount );
int offset = ( this.UsesMemorySystem == true ) ? 1 : 0;
for( int n = 0; n < ( ps.Length - offset ); n++ )
ParameterWidths[ n ] = ( ps[ n + offset ].ParameterType == typeof( long ) );
#if DEBUG
// Sanity check to make sure IMemory is always the first argument
if( this.UsesMemorySystem == false )
{
for( int n = 0; n < ps.Length; n++ )
Debug.Assert( ps[ n ].ParameterType != typeof( IMemory ) );
}
#endif
}
}
/// <summary>
/// Initializes a new <see cref="BiosFunction"/> instance in the case of a missing function.
/// </summary>
/// <param name="module">Module containing the function.</param>
/// <param name="nid">Unique ID of the function.</param>
public BiosFunction( BiosModule module, uint nid )
{
this.Module = module;
this.NID = nid;
this.IsMissing = true;
this.IsStateless = true;
}
private int LoadModule( IMediaFile file, Stream stream, int flags, int option )
{
// Load!
LoadParameters loadParams = new LoadParameters();
if( file != null )
{
loadParams.Path = file.Parent;
loadParams.FilePath = file.AbsolutePath;
string fileName = file.Name.ToLowerInvariant();
foreach( string blacklisted in _moduleBlacklist )
{
if( fileName == blacklisted )
{
// Module is blacklisted - ignore
Log.WriteLine( Verbosity.Normal, Feature.Bios, "LoadModule: module is blacklisted, ignoring" );
return FakeModuleUID;
}
}
}
#if DEBUG
loadParams.AppendDatabase = true;
#endif
// Check to see if it's one we have a decoded version of
string kernelLocation = Path.GetDirectoryName( Assembly.GetExecutingAssembly().Location );
string prxLocation = Path.Combine( kernelLocation, "PRX" );
string lookasidePrx = Path.Combine( prxLocation, file.Name );
if( File.Exists( lookasidePrx ) == true )
{
// Load ours instead
Log.WriteLine( Verbosity.Normal, Feature.Bios, "LoadModule: lookaside prx found at {0}", lookasidePrx );
stream = File.OpenRead( lookasidePrx );
}
Debug.Assert( stream != null );
if( stream == null )
{
Log.WriteLine( Verbosity.Critical, Feature.Bios, "LoadModule: unable to load module {0}", file.Name );
return -1;
}
// Quick check to make sure it isn't encrypted before sending off to loader
byte[] magicBytes = new byte[ 4 ];
stream.Read( magicBytes, 0, 4 );
stream.Seek( -4, SeekOrigin.Current );
// 0x7E, 0x50, 0x53, 0x50 = ~PSP
bool encrypted = (
( magicBytes[ 0 ] == 0x7E ) &&
( magicBytes[ 1 ] == 0x50 ) &&
( magicBytes[ 2 ] == 0x53 ) &&
( magicBytes[ 3 ] == 0x50 ) );
//Debug::Assert( encrypted == false );
if( encrypted == true )
{
Log.WriteLine( Verbosity.Critical, Feature.Bios, "LoadModule: module {0} is encrypted - unable to load", file.Name );
// We spoof the caller in to thinking we worked right... by just returning 0 ^_^
KModule fakemod = new KModule( _kernel, null );
fakemod.LoadParameters = loadParams;
_kernel.AddHandle( fakemod );
if( Diag.IsAttached == true )
Diag.Instance.Client.OnModuleLoaded();
return ( int )fakemod.UID;
}
LoadResults results = _kernel.Bios._loader.LoadModule( ModuleType.Prx, stream, loadParams );
//Debug.Assert( results.Successful == true );
if( results.Successful == false )
{
Log.WriteLine( Verbosity.Critical, Feature.Bios, "LoadModule: loader failed" );
return FakeModuleUID;
}
if( results.Ignored == true )
{
// Faked
Log.WriteLine( Verbosity.Normal, Feature.Bios, "LoadModule: ignoring module" );
return FakeModuleUID;
}
// Create a local representation of the module
BiosModule module = new BiosModule( results.Name, results.Exports.ToArray() );
_kernel.Bios._metaModules.Add( module );
_kernel.Bios._metaModuleLookup.Add( module.Name, module );
KModule kmod = new KModule( _kernel, module );
kmod.UID = results.ModuleID;
kmod.LoadParameters = loadParams;
kmod.LoadResults = results;
_kernel.UserModules.Add( kmod );
_kernel.AddHandle( kmod );
if( Diag.IsAttached == true )
Diag.Instance.Client.OnModuleLoaded();
return ( int )kmod.UID;
}