diff options
Diffstat (limited to 'lib/Target/ARM/ARMAsmPrinter.cpp')
| -rw-r--r-- | lib/Target/ARM/ARMAsmPrinter.cpp | 89 |
1 files changed, 68 insertions, 21 deletions
diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp index 55e9fe5..28d2610 100644 --- a/lib/Target/ARM/ARMAsmPrinter.cpp +++ b/lib/Target/ARM/ARMAsmPrinter.cpp @@ -82,7 +82,8 @@ void ARMAsmPrinter::EmitXXStructor(const Constant *CV) { const GlobalValue *GV = dyn_cast<GlobalValue>(CV->stripPointerCasts()); assert(GV && "C++ constructor pointer was not a GlobalValue!"); - const MCExpr *E = MCSymbolRefExpr::Create(getSymbol(GV), + const MCExpr *E = MCSymbolRefExpr::Create(GetARMGVSymbol(GV, + ARMII::MO_NO_FLAG), (Subtarget->isTargetELF() ? MCSymbolRefExpr::VK_ARM_TARGET1 : MCSymbolRefExpr::VK_None), @@ -164,7 +165,7 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum, else if ((Modifier && strcmp(Modifier, "hi16") == 0) || (TF & ARMII::MO_HI16)) O << ":upper16:"; - O << *getSymbol(GV); + O << *GetARMGVSymbol(GV, TF); printOffset(MO.getOffset(), O); if (TF == ARMII::MO_PLT) @@ -730,6 +731,32 @@ void ARMAsmPrinter::emitAttributes() { if (Subtarget->hasDivideInARMMode() && !Subtarget->hasV8Ops()) ATS.emitAttribute(ARMBuildAttrs::DIV_use, ARMBuildAttrs::AllowDIVExt); + if (MMI) { + if (const Module *SourceModule = MMI->getModule()) { + // ABI_PCS_wchar_t to indicate wchar_t width + // FIXME: There is no way to emit value 0 (wchar_t prohibited). + if (auto WCharWidthValue = cast_or_null<ConstantInt>( + SourceModule->getModuleFlag("wchar_size"))) { + int WCharWidth = WCharWidthValue->getZExtValue(); + assert((WCharWidth == 2 || WCharWidth == 4) && + "wchar_t width must be 2 or 4 bytes"); + ATS.emitAttribute(ARMBuildAttrs::ABI_PCS_wchar_t, WCharWidth); + } + + // ABI_enum_size to indicate enum width + // FIXME: There is no way to emit value 0 (enums prohibited) or value 3 + // (all enums contain a value needing 32 bits to encode). + if (auto EnumWidthValue = cast_or_null<ConstantInt>( + SourceModule->getModuleFlag("min_enum_size"))) { + int EnumWidth = EnumWidthValue->getZExtValue(); + assert((EnumWidth == 1 || EnumWidth == 4) && + "Minimum enum width must be 1 or 4 bytes"); + int EnumBuildAttr = EnumWidth == 1 ? 1 : 2; + ATS.emitAttribute(ARMBuildAttrs::ABI_enum_size, EnumBuildAttr); + } + } + } + if (Subtarget->hasTrustZone() && Subtarget->hasVirtualization()) ATS.emitAttribute(ARMBuildAttrs::Virtualization_use, ARMBuildAttrs::AllowTZVirtualization); @@ -768,23 +795,41 @@ getModifierVariantKind(ARMCP::ARMCPModifier Modifier) { MCSymbol *ARMAsmPrinter::GetARMGVSymbol(const GlobalValue *GV, unsigned char TargetFlags) { - bool isIndirect = Subtarget->isTargetMachO() && - (TargetFlags & ARMII::MO_NONLAZY) && - Subtarget->GVIsIndirectSymbol(GV, TM.getRelocationModel()); - if (!isIndirect) - return getSymbol(GV); + if (Subtarget->isTargetMachO()) { + bool IsIndirect = (TargetFlags & ARMII::MO_NONLAZY) && + Subtarget->GVIsIndirectSymbol(GV, TM.getRelocationModel()); + + if (!IsIndirect) + return getSymbol(GV); - // FIXME: Remove this when Darwin transition to @GOT like syntax. - MCSymbol *MCSym = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr"); - MachineModuleInfoMachO &MMIMachO = - MMI->getObjFileInfo<MachineModuleInfoMachO>(); - MachineModuleInfoImpl::StubValueTy &StubSym = - GV->hasHiddenVisibility() ? MMIMachO.getHiddenGVStubEntry(MCSym) : - MMIMachO.getGVStubEntry(MCSym); - if (!StubSym.getPointer()) - StubSym = MachineModuleInfoImpl:: - StubValueTy(getSymbol(GV), !GV->hasInternalLinkage()); - return MCSym; + // FIXME: Remove this when Darwin transition to @GOT like syntax. + MCSymbol *MCSym = getSymbolWithGlobalValueBase(GV, "$non_lazy_ptr"); + MachineModuleInfoMachO &MMIMachO = + MMI->getObjFileInfo<MachineModuleInfoMachO>(); + MachineModuleInfoImpl::StubValueTy &StubSym = + GV->hasHiddenVisibility() ? MMIMachO.getHiddenGVStubEntry(MCSym) + : MMIMachO.getGVStubEntry(MCSym); + if (!StubSym.getPointer()) + StubSym = MachineModuleInfoImpl::StubValueTy(getSymbol(GV), + !GV->hasInternalLinkage()); + return MCSym; + } else if (Subtarget->isTargetCOFF()) { + assert(Subtarget->isTargetWindows() && + "Windows is the only supported COFF target"); + + bool IsIndirect = (TargetFlags & ARMII::MO_DLLIMPORT); + if (!IsIndirect) + return getSymbol(GV); + + SmallString<128> Name; + Name = "__imp_"; + getNameWithPrefix(Name, GV); + + return OutContext.GetOrCreateSymbol(Name); + } else if (Subtarget->isTargetELF()) { + return getSymbol(GV); + } + llvm_unreachable("unexpected target"); } void ARMAsmPrinter:: @@ -928,7 +973,7 @@ void ARMAsmPrinter::EmitJump2Table(const MachineInstr *MI) { for (unsigned i = 0, e = JTBBs.size(); i != e; ++i) { MachineBasicBlock *MBB = JTBBs[i]; const MCExpr *MBBSymbolExpr = MCSymbolRefExpr::Create(MBB->getSymbol(), - OutContext); + OutContext); // If this isn't a TBB or TBH, the entries are direct branch instructions. if (OffsetWidth == 4) { EmitToStreamer(OutStreamer, MCInstBuilder(ARM::t2B) @@ -1225,8 +1270,10 @@ void ARMAsmPrinter::EmitInstruction(const MachineInstr *MI) { // Add 's' bit operand (always reg0 for this) .addReg(0)); - const GlobalValue *GV = MI->getOperand(0).getGlobal(); - MCSymbol *GVSym = getSymbol(GV); + const MachineOperand &Op = MI->getOperand(0); + const GlobalValue *GV = Op.getGlobal(); + const unsigned TF = Op.getTargetFlags(); + MCSymbol *GVSym = GetARMGVSymbol(GV, TF); const MCExpr *GVSymExpr = MCSymbolRefExpr::Create(GVSym, OutContext); EmitToStreamer(OutStreamer, MCInstBuilder(ARM::Bcc) .addExpr(GVSymExpr) |