[WinEH] Fill out .xdata for catch objects
This add support for catching an exception such that an exception object
available to the catch handler will be initialized by the runtime.
llvm-svn: 234062
diff --git a/llvm/lib/CodeGen/AsmPrinter/Win64Exception.cpp b/llvm/lib/CodeGen/AsmPrinter/Win64Exception.cpp
index 7a82daa..676ce65 100644
--- a/llvm/lib/CodeGen/AsmPrinter/Win64Exception.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/Win64Exception.cpp
@@ -450,9 +450,16 @@
const MCSymbolRefExpr *ParentFrameOffsetRef = MCSymbolRefExpr::Create(
ParentFrameOffset, MCSymbolRefExpr::VK_None, Asm->OutContext);
+ MCSymbol *FrameAllocOffset =
+ Asm->OutContext.getOrCreateFrameAllocSymbol(
+ GlobalValue::getRealLinkageName(F->getName()),
+ HT.CatchObjRecoverIdx);
+ const MCSymbolRefExpr *FrameAllocOffsetRef = MCSymbolRefExpr::Create(
+ FrameAllocOffset, MCSymbolRefExpr::VK_None, Asm->OutContext);
+
OS.EmitIntValue(HT.Adjectives, 4); // Adjectives
OS.EmitValue(createImageRel32(HT.TypeDescriptor), 4); // Type
- OS.EmitIntValue(HT.CatchObjOffset, 4); // CatchObjOffset
+ OS.EmitValue(FrameAllocOffsetRef, 4); // CatchObjOffset
OS.EmitValue(createImageRel32(HT.Handler), 4); // Handler
OS.EmitValue(ParentFrameOffsetRef, 4); // ParentFrameOffset
}