#include "llvm/CodeGen/MachineFunction.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/Support/CommandLine.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/FormattedStream.h"
-#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegisterInfo.h"
using namespace llvm;
-static cl::opt<bool>
-EnableARMEHABIDescriptors("arm-enable-ehabi-descriptors", cl::Hidden,
- cl::desc("Generate ARM EHABI tables with unwinding descriptors"),
- cl::init(false));
-
-
-ARMException::ARMException(AsmPrinter *A)
- : DwarfException(A) {}
+ARMException::ARMException(AsmPrinter *A) : DwarfCFIExceptionBase(A) {}
ARMException::~ARMException() {}
ARMTargetStreamer &ARMException::getTargetStreamer() {
- MCTargetStreamer &TS = Asm->OutStreamer.getTargetStreamer();
+ MCTargetStreamer &TS = *Asm->OutStreamer.getTargetStreamer();
return static_cast<ARMTargetStreamer &>(TS);
}
+/// endModule - Emit all exception information that should come after the
+/// content.
void ARMException::endModule() {
+ if (shouldEmitCFI)
+ Asm->OutStreamer.EmitCFISections(false, true);
}
-/// beginFunction - Gather pre-function exception information. Assumes it's
-/// being emitted immediately after the function entry point.
void ARMException::beginFunction(const MachineFunction *MF) {
- getTargetStreamer().emitFnStart();
- if (Asm->MF->getFunction()->needsUnwindTableEntry())
- Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin",
- Asm->getFunctionNumber()));
+ if (Asm->MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
+ getTargetStreamer().emitFnStart();
+ // See if we need call frame info.
+ AsmPrinter::CFIMoveType MoveType = Asm->needsCFIMoves();
+ assert(MoveType != AsmPrinter::CFI_M_EH &&
+ "non-EH CFI not yet supported in prologue with EHABI lowering");
+ if (MoveType == AsmPrinter::CFI_M_Debug) {
+ shouldEmitCFI = true;
+ Asm->OutStreamer.EmitCFIStartProc(false);
+ }
}
/// endFunction - Gather and emit post-function exception information.
///
-void ARMException::endFunction() {
+void ARMException::endFunction(const MachineFunction *MF) {
ARMTargetStreamer &ATS = getTargetStreamer();
- if (!Asm->MF->getFunction()->needsUnwindTableEntry())
+ if (!Asm->MF->getFunction()->needsUnwindTableEntry() &&
+ MMI->getLandingPads().empty())
ATS.emitCantUnwind();
else {
- Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_end",
- Asm->getFunctionNumber()));
-
- if (EnableARMEHABIDescriptors) {
- // Map all labels and get rid of any dead landing pads.
- MMI->TidyLandingPads();
-
- if (!MMI->getLandingPads().empty()) {
- // Emit references to personality.
- if (const Function * Personality =
- MMI->getPersonalities()[MMI->getPersonalityIndex()]) {
- MCSymbol *PerSym = Asm->getSymbol(Personality);
- Asm->OutStreamer.EmitSymbolAttribute(PerSym, MCSA_Global);
- ATS.emitPersonality(PerSym);
- }
-
- // Emit .handlerdata directive.
- ATS.emitHandlerData();
-
- // Emit actual exception table
- EmitExceptionTable();
+ if (!MMI->getLandingPads().empty()) {
+ // Emit references to personality.
+ if (const Function *Personality = MMI->getPersonality()) {
+ MCSymbol *PerSym = Asm->getSymbol(Personality);
+ Asm->OutStreamer.EmitSymbolAttribute(PerSym, MCSA_Global);
+ ATS.emitPersonality(PerSym);
}
+
+ // Emit .handlerdata directive.
+ ATS.emitHandlerData();
+
+ // Emit actual exception table
+ emitExceptionTable();
}
}
- ATS.emitFnEnd();
+ if (Asm->MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
+ ATS.emitFnEnd();
}
-void ARMException::EmitTypeInfos(unsigned TTypeEncoding) {
- const std::vector<const GlobalVariable *> &TypeInfos = MMI->getTypeInfos();
+void ARMException::emitTypeInfos(unsigned TTypeEncoding) {
+ const std::vector<const GlobalValue *> &TypeInfos = MMI->getTypeInfos();
const std::vector<unsigned> &FilterIds = MMI->getFilterIds();
bool VerboseAsm = Asm->OutStreamer.isVerboseAsm();
Entry = TypeInfos.size();
}
- for (std::vector<const GlobalVariable *>::const_reverse_iterator
+ for (std::vector<const GlobalValue *>::const_reverse_iterator
I = TypeInfos.rbegin(), E = TypeInfos.rend(); I != E; ++I) {
- const GlobalVariable *GV = *I;
+ const GlobalValue *GV = *I;
if (VerboseAsm)
Asm->OutStreamer.AddComment("TypeInfo " + Twine(Entry--));
Asm->EmitTTypeReference(GV, TTypeEncoding);
Asm->OutStreamer.AddComment("FilterInfo " + Twine(Entry));
}
- Asm->EmitTTypeReference((TypeID == 0 ? 0 : TypeInfos[TypeID - 1]),
+ Asm->EmitTTypeReference((TypeID == 0 ? nullptr : TypeInfos[TypeID - 1]),
TTypeEncoding);
}
}