diff options
Diffstat (limited to 'lib/CodeGen/AsmPrinter/ARMException.cpp')
-rw-r--r-- | lib/CodeGen/AsmPrinter/ARMException.cpp | 68 |
1 files changed, 38 insertions, 30 deletions
diff --git a/lib/CodeGen/AsmPrinter/ARMException.cpp b/lib/CodeGen/AsmPrinter/ARMException.cpp index 5d82dd9..403feb4 100644 --- a/lib/CodeGen/AsmPrinter/ARMException.cpp +++ b/lib/CodeGen/AsmPrinter/ARMException.cpp @@ -20,6 +20,7 @@ #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" @@ -30,43 +31,52 @@ #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) {} + : DwarfException(A), + shouldEmitCFI(false) {} ARMException::~ARMException() {} ARMTargetStreamer &ARMException::getTargetStreamer() { - MCTargetStreamer &TS = Asm->OutStreamer.getTargetStreamer(); + MCTargetStreamer &TS = *Asm->OutStreamer.getTargetStreamer(); return static_cast<ARMTargetStreamer &>(TS); } -void ARMException::EndModule() { +/// 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 +/// beginFunction - Gather pre-function exception information. Assumes it's /// being emitted immediately after the function entry point. -void ARMException::BeginFunction(const MachineFunction *MF) { +void ARMException::beginFunction(const MachineFunction *MF) { getTargetStreamer().emitFnStart(); if (Asm->MF->getFunction()->needsUnwindTableEntry()) Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin", Asm->getFunctionNumber())); + // 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. +/// endFunction - Gather and emit post-function exception information. /// -void ARMException::EndFunction() { +void ARMException::endFunction(const MachineFunction *) { + if (shouldEmitCFI) + Asm->OutStreamer.EmitCFIEndProc(); + ARMTargetStreamer &ATS = getTargetStreamer(); if (!Asm->MF->getFunction()->needsUnwindTableEntry()) ATS.emitCantUnwind(); @@ -74,25 +84,23 @@ void ARMException::EndFunction() { 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(); + // 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); - } + 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 .handlerdata directive. + ATS.emitHandlerData(); - // Emit actual exception table - EmitExceptionTable(); - } + // Emit actual exception table + EmitExceptionTable(); } } |