static void BuildFilterFunclet(LLVMModuleRef module, LLVMTypeRef[] funcletArgTypes)
{
LlvmFilterFunclet = module.AddFunction("LlvmFilterFunclet", LLVMTypeRef.CreateFunction(LLVMTypeRef.Int32, funcletArgTypes, false));
var block = LlvmFilterFunclet.AppendBasicBlock("Filter");
LLVMBuilderRef funcletBuilder = Context.CreateBuilder();
funcletBuilder.PositionAtEnd(block);
LLVMValueRef filterResult = funcletBuilder.BuildCall(LlvmFilterFunclet.GetParam(0), new LLVMValueRef[] { LlvmFilterFunclet.GetParam(1) }, "callFilter");
funcletBuilder.BuildRet(filterResult);
funcletBuilder.Dispose();
}
static void BuildCatchFunclet(LLVMModuleRef module, string funcletName, LLVMTypeRef[] funcletArgTypes, bool passGenericContext = false)
{
LlvmCatchFunclet = module.AddFunction(funcletName, LLVMTypeRef.CreateFunction(LLVMTypeRef.Int32,
funcletArgTypes, false));
var block = LlvmCatchFunclet.AppendBasicBlock("Catch");
LLVMBuilderRef funcletBuilder = Context.CreateBuilder();
funcletBuilder.PositionAtEnd(block);
List <LLVMValueRef> llvmArgs = new List <LLVMValueRef>();
llvmArgs.Add(LlvmCatchFunclet.GetParam(2));
if (passGenericContext)
{
llvmArgs.Add(LlvmCatchFunclet.GetParam(3));
}
LLVMValueRef leaveToILOffset = funcletBuilder.BuildCall(LlvmCatchFunclet.GetParam(1), llvmArgs.ToArray(), string.Empty);
funcletBuilder.BuildRet(leaveToILOffset);
funcletBuilder.Dispose();
}
static void BuildFilterFunclet(LLVMModuleRef module, string funcletName, LLVMTypeRef[] funcletArgTypes, bool passGenericContext = false)
{
LlvmFilterFunclet = module.AddFunction(funcletName, LLVMTypeRef.CreateFunction(LLVMTypeRef.Int32,
funcletArgTypes, false));
var block = LlvmFilterFunclet.AppendBasicBlock("Filter");
LLVMBuilderRef funcletBuilder = Context.CreateBuilder();
funcletBuilder.PositionAtEnd(block);
List <LLVMValueRef> llvmArgs = new List <LLVMValueRef>();
llvmArgs.Add(LlvmFilterFunclet.GetParam(2)); //shadow stack
llvmArgs.Add(LlvmFilterFunclet.GetParam(0)); // exception object
if (passGenericContext)
{
llvmArgs.Add(LlvmFilterFunclet.GetParam(3));
}
LLVMValueRef filterResult = funcletBuilder.BuildCall(LlvmFilterFunclet.GetParam(1), llvmArgs.ToArray(), string.Empty);
funcletBuilder.BuildRet(filterResult);
funcletBuilder.Dispose();
}
static void BuildFinallyFunclet(LLVMModuleRef module)
{
LlvmFinallyFunclet = module.AddFunction("LlvmFinallyFunclet", LLVMTypeRef.CreateFunction(LLVMTypeRef.Void,
new LLVMTypeRef[]
{
LLVMTypeRef.CreatePointer(LLVMTypeRef.CreateFunction(LLVMTypeRef.Void, new LLVMTypeRef[] { LLVMTypeRef.CreatePointer(LLVMTypeRef.Int8, 0) }, false), 0), // finallyHandler
LLVMTypeRef.CreatePointer(LLVMTypeRef.Int8, 0), // shadow stack
}, false));
var block = LlvmFinallyFunclet.AppendBasicBlock("GenericFinally");
LLVMBuilderRef funcletBuilder = Context.CreateBuilder();
funcletBuilder.PositionAtEnd(block);
var finallyFunclet = LlvmFinallyFunclet.GetParam(0);
var castShadowStack = LlvmFinallyFunclet.GetParam(1);
List <LLVMValueRef> llvmArgs = new List <LLVMValueRef>();
llvmArgs.Add(castShadowStack);
funcletBuilder.BuildCall(finallyFunclet, llvmArgs.ToArray(), string.Empty);
funcletBuilder.BuildRetVoid();
funcletBuilder.Dispose();
}
