/// <summary>
/// </summary>
/// <param name="llvmWriter">
/// </param>
/// <param name="opCode">
/// </param>
/// <param name="options">
/// </param>
/// <param name="finallyOrFaultClause">
/// </param>
/// <param name="catch">
/// </param>
/// <param name="filter">
/// </param>
/// <param name="exceptionAllocationResultNumber">
/// </param>
public static void WriteLandingPad(
this LlvmWriter llvmWriter,
OpCodePart opCode,
LandingPadOptions options,
CatchOfFinallyClause finallyOrFaultClause,
IType[] @catch = null,
int[] filter = null,
int?exceptionAllocationResultNumber = null)
{
var writer = llvmWriter.Output;
llvmWriter.WriteLandingPadVariables();
var landingPadResult = llvmWriter.WriteSetResultNumber(
opCode,
llvmWriter.System.System_Byte.ToPointerType());
writer.WriteLine(
"landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)");
if (options.HasFlag(LandingPadOptions.Cleanup))
{
writer.Indent++;
writer.WriteLine("cleanup");
writer.Indent--;
}
if (options.HasFlag(LandingPadOptions.EmptyFilter))
{
writer.Indent++;
writer.WriteLine("filter [0 x i8*] zeroinitializer");
writer.Indent--;
}
if (@catch != null && @catch.Any())
{
foreach (var catchType in @catch)
{
writer.Indent++;
if (catchType != null)
{
writer.Write("catch i8* bitcast (");
catchType.WriteRttiPointerClassInfoDeclaration(writer);
writer.WriteLine("* @\"{0}\" to i8*)", catchType.GetRttiPointerInfoName());
llvmWriter.typeRttiPointerDeclRequired.Add(catchType);
llvmWriter.CheckIfExternalDeclarationIsRequired(catchType);
}
else
{
writer.Write("catch i8* null");
}
writer.Indent--;
}
}
else if (finallyOrFaultClause != null)
{
// default catch with rethrowing it
writer.Indent++;
writer.WriteLine("catch i8* null");
writer.Indent--;
finallyOrFaultClause.EmptyFinallyRethrowRequired = true;
}
var getErrorObjectResultNumber = llvmWriter.WriteSetResultNumber(
opCode,
llvmWriter.System.System_Byte.ToPointerType());
writer.WriteLine("extractvalue {1} {0}, 0", landingPadResult, "{ i8*, i32 }");
writer.WriteLine("store i8* {0}, i8** %.error_object", getErrorObjectResultNumber);
var getErrorTypeIdResultNumber = llvmWriter.WriteSetResultNumber(
opCode,
llvmWriter.System.System_Int32);
writer.WriteLine("extractvalue {1} {0}, 1", landingPadResult, "{ i8*, i32 }");
writer.Write("store i32 {0}, i32* %.error_typeid", getErrorTypeIdResultNumber);
if (exceptionAllocationResultNumber.HasValue)
{
writer.WriteLine(string.Empty);
writer.Write("call void @__cxa_free_exception(i8* {0})", exceptionAllocationResultNumber.Value);
}
opCode.Result = landingPadResult;
}
/// <summary>
/// </summary>
/// <param name="llvmWriter">
/// </param>
/// <param name="opCode">
/// </param>
/// <param name="options">
/// </param>
/// <param name="finallyOrFaultClause">
/// </param>
/// <param name="catch">
/// </param>
/// <param name="filter">
/// </param>
/// <param name="exceptionAllocationResultNumber">
/// </param>
public static void WriteLandingPad(
this LlvmWriter llvmWriter,
OpCodePart opCode,
LandingPadOptions options,
CatchOfFinallyClause finallyOrFaultClause,
IType[] @catch = null,
int[] filter = null,
int? exceptionAllocationResultNumber = null)
{
var writer = llvmWriter.Output;
llvmWriter.WriteLandingPadVariables();
var landingPadResult = llvmWriter.WriteSetResultNumber(
opCode,
llvmWriter.System.System_Byte.ToPointerType());
writer.WriteLine(
"landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)");
if (options.HasFlag(LandingPadOptions.Cleanup))
{
writer.Indent++;
writer.WriteLine("cleanup");
writer.Indent--;
}
if (options.HasFlag(LandingPadOptions.EmptyFilter))
{
writer.Indent++;
writer.WriteLine("filter [0 x i8*] zeroinitializer");
writer.Indent--;
}
if (@catch != null && @catch.Any())
{
foreach (var catchType in @catch)
{
writer.Indent++;
if (catchType != null)
{
writer.Write("catch i8* bitcast (");
catchType.WriteRttiPointerClassInfoDeclaration(writer);
writer.WriteLine("* @\"{0}\" to i8*)", catchType.GetRttiPointerInfoName());
llvmWriter.typeRttiPointerDeclRequired.Add(catchType);
llvmWriter.CheckIfExternalDeclarationIsRequired(catchType);
}
else
{
writer.Write("catch i8* null");
}
writer.Indent--;
}
}
else if (finallyOrFaultClause != null)
{
// default catch with rethrowing it
writer.Indent++;
writer.WriteLine("catch i8* null");
writer.Indent--;
finallyOrFaultClause.EmptyFinallyRethrowRequired = true;
}
var getErrorObjectResultNumber = llvmWriter.WriteSetResultNumber(
opCode,
llvmWriter.System.System_Byte.ToPointerType());
writer.WriteLine("extractvalue {1} {0}, 0", landingPadResult, "{ i8*, i32 }");
writer.WriteLine("store i8* {0}, i8** %.error_object", getErrorObjectResultNumber);
var getErrorTypeIdResultNumber = llvmWriter.WriteSetResultNumber(
opCode,
llvmWriter.System.System_Int32);
writer.WriteLine("extractvalue {1} {0}, 1", landingPadResult, "{ i8*, i32 }");
writer.Write("store i32 {0}, i32* %.error_typeid", getErrorTypeIdResultNumber);
if (exceptionAllocationResultNumber.HasValue)
{
writer.WriteLine(string.Empty);
writer.Write("call void @__cxa_free_exception(i8* {0})", exceptionAllocationResultNumber.Value);
}
opCode.Result = landingPadResult;
}
