//===----------------------------------------------------------------------===//
#include "DwarfException.h"
-#include "llvm/Module.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/Mangler.h"
+#include "llvm/IR/Module.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/Target/Mangler.h"
-#include "llvm/Target/TargetData.h"
+#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormattedStream.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
-#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/Support/Dwarf.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FormattedStream.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/Twine.h"
using namespace llvm;
Win64Exception::Win64Exception(AsmPrinter *A)
- : DwarfException(A),
- shouldEmitPersonality(false), shouldEmitLSDA(false), shouldEmitMoves(false)
- {}
+ : EHStreamer(A), shouldEmitPersonality(false), shouldEmitLSDA(false),
+ shouldEmitMoves(false) {}
Win64Exception::~Win64Exception() {}
-/// EndModule - Emit all exception information that should come after the
+/// endModule - Emit all exception information that should come after the
/// content.
-void Win64Exception::EndModule() {
+void Win64Exception::endModule() {
}
-/// BeginFunction - Gather pre-function exception information. Assumes it's
+/// beginFunction - Gather pre-function exception information. Assumes it's
/// being emitted immediately after the function entry point.
-void Win64Exception::BeginFunction(const MachineFunction *MF) {
+void Win64Exception::beginFunction(const MachineFunction *MF) {
+ shouldEmitMoves = shouldEmitPersonality = shouldEmitLSDA = false;
+
+ // If any landing pads survive, we need an EH table.
+ bool hasLandingPads = !MMI->getLandingPads().empty();
+
+ shouldEmitMoves = Asm->needsSEHMoves();
+
+ const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
+ unsigned PerEncoding = TLOF.getPersonalityEncoding();
+ const Function *Per = MMI->getPersonalities()[MMI->getPersonalityIndex()];
+
+ shouldEmitPersonality = hasLandingPads &&
+ PerEncoding != dwarf::DW_EH_PE_omit && Per;
+
+ unsigned LSDAEncoding = TLOF.getLSDAEncoding();
+ shouldEmitLSDA = shouldEmitPersonality &&
+ LSDAEncoding != dwarf::DW_EH_PE_omit;
+
+ if (!shouldEmitPersonality && !shouldEmitMoves)
+ return;
+
+ Asm->OutStreamer.EmitWinCFIStartProc(Asm->CurrentFnSym);
+
+ if (!shouldEmitPersonality)
+ return;
+
+ const MCSymbol *PersHandlerSym =
+ TLOF.getCFIPersonalitySymbol(Per, *Asm->Mang, Asm->TM, MMI);
+ Asm->OutStreamer.EmitWinEHHandler(PersHandlerSym, true, true);
+
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin",
+ Asm->getFunctionNumber()));
}
-/// EndFunction - Gather and emit post-function exception information.
+/// endFunction - Gather and emit post-function exception information.
///
-void Win64Exception::EndFunction() {
+void Win64Exception::endFunction(const MachineFunction *) {
+ if (!shouldEmitPersonality && !shouldEmitMoves)
+ return;
+
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_end",
+ Asm->getFunctionNumber()));
+
+ // Map all labels and get rid of any dead landing pads.
+ MMI->TidyLandingPads();
+
+ if (shouldEmitPersonality) {
+ Asm->OutStreamer.PushSection();
+ Asm->OutStreamer.EmitWinEHHandlerData();
+ emitExceptionTable();
+ Asm->OutStreamer.PopSection();
+ }
+ Asm->OutStreamer.EmitWinCFIEndProc();
}