//
//===----------------------------------------------------------------------===//
-#include "ARMArchName.h"
-#include "ARMFPUName.h"
#include "ARMRegisterInfo.h"
#include "ARMUnwindOpAsm.h"
-#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCELFStreamer.h"
-#include "llvm/MC/MCELFSymbolFlags.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCObjectStreamer.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ARMBuildAttributes.h"
#include "llvm/Support/ARMEHABI.h"
+#include "llvm/Support/TargetParser.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/LEB128.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
return (Twine("__aeabi_unwind_cpp_pr") + Twine(Index)).str();
}
-static const char *GetFPUName(unsigned ID) {
- switch (ID) {
- default:
- llvm_unreachable("Unknown FPU kind");
- break;
-#define ARM_FPU_NAME(NAME, ID) case ARM::ID: return NAME;
-#include "ARMFPUName.def"
- }
- return NULL;
-}
-
-static const char *GetArchName(unsigned ID) {
- switch (ID) {
- default:
- llvm_unreachable("Unknown ARCH kind");
- break;
-#define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) \
- case ARM::ID: return NAME;
-#define ARM_ARCH_ALIAS(NAME, ID) /* empty */
-#include "ARMArchName.def"
- }
- return NULL;
-}
-
-static const char *GetArchDefaultCPUName(unsigned ID) {
- switch (ID) {
- default:
- llvm_unreachable("Unknown ARCH kind");
- break;
-#define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) \
- case ARM::ID: return DEFAULT_CPU_NAME;
-#define ARM_ARCH_ALIAS(NAME, ID) /* empty */
-#include "ARMArchName.def"
- }
- return NULL;
-}
-
-static unsigned GetArchDefaultCPUArch(unsigned ID) {
- switch (ID) {
- default:
- llvm_unreachable("Unknown ARCH kind");
- break;
-#define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) \
- case ARM::ID: return ARMBuildAttrs::DEFAULT_CPU_ARCH;
-#define ARM_ARCH_ALIAS(NAME, ID) /* empty */
-#include "ARMArchName.def"
- }
- return 0;
-}
-
namespace {
class ARMELFStreamer;
MCInstPrinter &InstPrinter;
bool IsVerboseAsm;
- virtual void emitFnStart();
- virtual void emitFnEnd();
- virtual void emitCantUnwind();
- virtual void emitPersonality(const MCSymbol *Personality);
- virtual void emitPersonalityIndex(unsigned Index);
- virtual void emitHandlerData();
- virtual void emitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset = 0);
- virtual void emitMovSP(unsigned Reg, int64_t Offset = 0);
- virtual void emitPad(int64_t Offset);
- virtual void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
- bool isVector);
- virtual void emitUnwindRaw(int64_t Offset,
- const SmallVectorImpl<uint8_t> &Opcodes);
-
- virtual void switchVendor(StringRef Vendor);
- virtual void emitAttribute(unsigned Attribute, unsigned Value);
- virtual void emitTextAttribute(unsigned Attribute, StringRef String);
- virtual void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
- StringRef StrinValue);
- virtual void emitArch(unsigned Arch);
- virtual void emitObjectArch(unsigned Arch);
- virtual void emitFPU(unsigned FPU);
- virtual void emitInst(uint32_t Inst, char Suffix = '\0');
- virtual void finishAttributeSection();
-
- virtual void AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *SRE);
+ void emitFnStart() override;
+ void emitFnEnd() override;
+ void emitCantUnwind() override;
+ void emitPersonality(const MCSymbol *Personality) override;
+ void emitPersonalityIndex(unsigned Index) override;
+ void emitHandlerData() override;
+ void emitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset = 0) override;
+ void emitMovSP(unsigned Reg, int64_t Offset = 0) override;
+ void emitPad(int64_t Offset) override;
+ void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
+ bool isVector) override;
+ void emitUnwindRaw(int64_t Offset,
+ const SmallVectorImpl<uint8_t> &Opcodes) override;
+
+ void switchVendor(StringRef Vendor) override;
+ void emitAttribute(unsigned Attribute, unsigned Value) override;
+ void emitTextAttribute(unsigned Attribute, StringRef String) override;
+ void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
+ StringRef StrinValue) override;
+ void emitArch(unsigned Arch) override;
+ void emitArchExtension(unsigned ArchExt) override;
+ void emitObjectArch(unsigned Arch) override;
+ void emitFPU(unsigned FPU) override;
+ void emitInst(uint32_t Inst, char Suffix = '\0') override;
+ void finishAttributeSection() override;
+
+ void AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *SRE) override;
+ void emitThumbSet(MCSymbol *Symbol, const MCExpr *Value) override;
public:
ARMTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS,
OS << "\n";
}
void ARMTargetAsmStreamer::emitArch(unsigned Arch) {
- OS << "\t.arch\t" << GetArchName(Arch) << "\n";
+ OS << "\t.arch\t" << ARM::getArchName(Arch) << "\n";
+}
+void ARMTargetAsmStreamer::emitArchExtension(unsigned ArchExt) {
+ OS << "\t.arch_extension\t" << ARM::getArchExtName(ArchExt) << "\n";
}
void ARMTargetAsmStreamer::emitObjectArch(unsigned Arch) {
- OS << "\t.object_arch\t" << GetArchName(Arch) << '\n';
+ OS << "\t.object_arch\t" << ARM::getArchName(Arch) << '\n';
}
void ARMTargetAsmStreamer::emitFPU(unsigned FPU) {
- OS << "\t.fpu\t" << GetFPUName(FPU) << "\n";
+ OS << "\t.fpu\t" << ARM::getFPUName(FPU) << "\n";
}
void ARMTargetAsmStreamer::finishAttributeSection() {
}
OS << "\t.tlsdescseq\t" << S->getSymbol().getName();
}
+void ARMTargetAsmStreamer::emitThumbSet(MCSymbol *Symbol, const MCExpr *Value) {
+ const MCAsmInfo *MAI = Streamer.getContext().getAsmInfo();
+
+ OS << "\t.thumb_set\t";
+ Symbol->print(OS, MAI);
+ OS << ", ";
+ Value->print(OS, MAI);
+ OS << '\n';
+}
+
void ARMTargetAsmStreamer::emitInst(uint32_t Inst, char Suffix) {
OS << "\t.inst";
if (Suffix)
OS << "." << Suffix;
- OS << "\t0x" << utohexstr(Inst) << "\n";
+ OS << "\t0x" << Twine::utohexstr(Inst) << "\n";
}
void ARMTargetAsmStreamer::emitUnwindRaw(int64_t Offset,
for (SmallVectorImpl<uint8_t>::const_iterator OCI = Opcodes.begin(),
OCE = Opcodes.end();
OCI != OCE; ++OCI)
- OS << ", 0x" << utohexstr(*OCI);
+ OS << ", 0x" << Twine::utohexstr(*OCI);
OS << '\n';
}
StringRef StringValue;
static bool LessTag(const AttributeItem &LHS, const AttributeItem &RHS) {
- return (LHS.Tag < RHS.Tag);
+ // The conformance tag must be emitted first when serialised
+ // into an object file. Specifically, the addenda to the ARM ABI
+ // states that (2.3.7.4):
+ //
+ // "To simplify recognition by consumers in the common case of
+ // claiming conformity for the whole file, this tag should be
+ // emitted first in a file-scope sub-subsection of the first
+ // public subsection of the attributes section."
+ //
+ // So it is special-cased in this comparison predicate when the
+ // attributes are sorted in finishAttributeSection().
+ return (RHS.Tag != ARMBuildAttrs::conformance) &&
+ ((LHS.Tag == ARMBuildAttrs::conformance) || (LHS.Tag < RHS.Tag));
}
};
unsigned EmittedArch;
SmallVector<AttributeItem, 64> Contents;
- const MCSection *AttributeSection;
-
- // FIXME: this should be in a more generic place, but
- // getULEBSize() is in MCAsmInfo and will be moved to MCDwarf
- static size_t getULEBSize(int Value) {
- size_t Size = 0;
- do {
- Value >>= 7;
- Size += sizeof(int8_t); // Is this really necessary?
- } while (Value);
- return Size;
- }
+ MCSection *AttributeSection;
AttributeItem *getAttributeItem(unsigned Attribute) {
for (size_t i = 0; i < Contents.size(); ++i)
if (Contents[i].Tag == Attribute)
return &Contents[i];
- return 0;
+ return nullptr;
}
void setAttributeItem(unsigned Attribute, unsigned Value,
ARMELFStreamer &getStreamer();
- virtual void emitFnStart();
- virtual void emitFnEnd();
- virtual void emitCantUnwind();
- virtual void emitPersonality(const MCSymbol *Personality);
- virtual void emitPersonalityIndex(unsigned Index);
- virtual void emitHandlerData();
- virtual void emitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset = 0);
- virtual void emitMovSP(unsigned Reg, int64_t Offset = 0);
- virtual void emitPad(int64_t Offset);
- virtual void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
- bool isVector);
- virtual void emitUnwindRaw(int64_t Offset,
- const SmallVectorImpl<uint8_t> &Opcodes);
-
- virtual void switchVendor(StringRef Vendor);
- virtual void emitAttribute(unsigned Attribute, unsigned Value);
- virtual void emitTextAttribute(unsigned Attribute, StringRef String);
- virtual void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
- StringRef StringValue);
- virtual void emitArch(unsigned Arch);
- virtual void emitObjectArch(unsigned Arch);
- virtual void emitFPU(unsigned FPU);
- virtual void emitInst(uint32_t Inst, char Suffix = '\0');
- virtual void finishAttributeSection();
-
- virtual void AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *SRE);
+ void emitFnStart() override;
+ void emitFnEnd() override;
+ void emitCantUnwind() override;
+ void emitPersonality(const MCSymbol *Personality) override;
+ void emitPersonalityIndex(unsigned Index) override;
+ void emitHandlerData() override;
+ void emitSetFP(unsigned FpReg, unsigned SpReg, int64_t Offset = 0) override;
+ void emitMovSP(unsigned Reg, int64_t Offset = 0) override;
+ void emitPad(int64_t Offset) override;
+ void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
+ bool isVector) override;
+ void emitUnwindRaw(int64_t Offset,
+ const SmallVectorImpl<uint8_t> &Opcodes) override;
+
+ void switchVendor(StringRef Vendor) override;
+ void emitAttribute(unsigned Attribute, unsigned Value) override;
+ void emitTextAttribute(unsigned Attribute, StringRef String) override;
+ void emitIntTextAttribute(unsigned Attribute, unsigned IntValue,
+ StringRef StringValue) override;
+ void emitArch(unsigned Arch) override;
+ void emitObjectArch(unsigned Arch) override;
+ void emitFPU(unsigned FPU) override;
+ void emitInst(uint32_t Inst, char Suffix = '\0') override;
+ void finishAttributeSection() override;
+ void emitLabel(MCSymbol *Symbol) override;
+
+ void AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *SRE) override;
+ void emitThumbSet(MCSymbol *Symbol, const MCExpr *Value) override;
size_t calculateContentSize() const;
public:
ARMTargetELFStreamer(MCStreamer &S)
- : ARMTargetStreamer(S), CurrentVendor("aeabi"), FPU(ARM::INVALID_FPU),
- Arch(ARM::INVALID_ARCH), EmittedArch(ARM::INVALID_ARCH),
- AttributeSection(0) {}
+ : ARMTargetStreamer(S), CurrentVendor("aeabi"), FPU(ARM::FK_INVALID),
+ Arch(ARM::AK_INVALID), EmittedArch(ARM::AK_INVALID),
+ AttributeSection(nullptr) {}
};
/// Extend the generic ELFStreamer class so that it can emit mapping symbols at
public:
friend class ARMTargetELFStreamer;
- ARMELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
+ ARMELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_pwrite_stream &OS,
MCCodeEmitter *Emitter, bool IsThumb)
: MCELFStreamer(Context, TAB, OS, Emitter), IsThumb(IsThumb),
MappingSymbolCounter(0), LastEMS(EMS_None) {
~ARMELFStreamer() {}
- virtual void FinishImpl();
+ void FinishImpl() override;
// ARM exception handling directives
void emitFnStart();
void emitRegSave(const SmallVectorImpl<unsigned> &RegList, bool isVector);
void emitUnwindRaw(int64_t Offset, const SmallVectorImpl<uint8_t> &Opcodes);
- virtual void ChangeSection(const MCSection *Section,
- const MCExpr *Subsection) {
+ void ChangeSection(MCSection *Section, const MCExpr *Subsection) override {
// We have to keep track of the mapping symbol state of any sections we
// use. Each one should start off as EMS_None, which is provided as the
// default constructor by DenseMap::lookup.
/// This function is the one used to emit instruction data into the ELF
/// streamer. We override it to add the appropriate mapping symbol if
/// necessary.
- virtual void EmitInstruction(const MCInst& Inst, const MCSubtargetInfo &STI) {
+ void EmitInstruction(const MCInst& Inst,
+ const MCSubtargetInfo &STI) override {
if (IsThumb)
EmitThumbMappingSymbol();
else
MCELFStreamer::EmitInstruction(Inst, STI);
}
- virtual void emitInst(uint32_t Inst, char Suffix) {
+ void emitInst(uint32_t Inst, char Suffix) {
unsigned Size;
char Buffer[4];
const bool LittleEndian = getContext().getAsmInfo()->isLittleEndian();
/// This is one of the functions used to emit data into an ELF section, so the
/// ARM streamer overrides it to add the appropriate mapping symbol ($d) if
/// necessary.
- virtual void EmitBytes(StringRef Data) {
+ void EmitBytes(StringRef Data) override {
EmitDataMappingSymbol();
MCELFStreamer::EmitBytes(Data);
}
/// This is one of the functions used to emit data into an ELF section, so the
/// ARM streamer overrides it to add the appropriate mapping symbol ($d) if
/// necessary.
- virtual void EmitValueImpl(const MCExpr *Value, unsigned Size) {
+ void EmitValueImpl(const MCExpr *Value, unsigned Size, SMLoc Loc) override {
+ if (const MCSymbolRefExpr *SRE = dyn_cast_or_null<MCSymbolRefExpr>(Value))
+ if (SRE->getKind() == MCSymbolRefExpr::VK_ARM_SBREL && !(Size == 4))
+ getContext().reportFatalError(Loc, "relocated expression must be 32-bit");
+
EmitDataMappingSymbol();
MCELFStreamer::EmitValueImpl(Value, Size);
}
- virtual void EmitAssemblerFlag(MCAssemblerFlag Flag) {
+ void EmitAssemblerFlag(MCAssemblerFlag Flag) override {
MCELFStreamer::EmitAssemblerFlag(Flag);
switch (Flag) {
}
void EmitMappingSymbol(StringRef Name) {
- MCSymbol *Start = getContext().CreateTempSymbol();
- EmitLabel(Start);
-
- MCSymbol *Symbol =
- getContext().GetOrCreateSymbol(Name + "." +
- Twine(MappingSymbolCounter++));
-
- MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Symbol);
- MCELF::SetType(SD, ELF::STT_NOTYPE);
- MCELF::SetBinding(SD, ELF::STB_LOCAL);
- SD.setExternal(false);
- AssignSection(Symbol, getCurrentSection().first);
+ auto *Symbol = cast<MCSymbolELF>(getContext().getOrCreateSymbol(
+ Name + "." + Twine(MappingSymbolCounter++)));
+ EmitLabel(Symbol);
- const MCExpr *Value = MCSymbolRefExpr::Create(Start, getContext());
- Symbol->setVariableValue(Value);
+ Symbol->setType(ELF::STT_NOTYPE);
+ Symbol->setBinding(ELF::STB_LOCAL);
+ Symbol->setExternal(false);
}
- void EmitThumbFunc(MCSymbol *Func) {
- // FIXME: Anything needed here to flag the function as thumb?
-
+ void EmitThumbFunc(MCSymbol *Func) override {
getAssembler().setIsThumbFunc(Func);
-
- MCSymbolData &SD = getAssembler().getOrCreateSymbolData(*Func);
- SD.setFlags(SD.getFlags() | ELF_Other_ThumbFunc);
+ EmitSymbolAttribute(Func, MCSA_ELF_TypeFunction);
}
// Helper functions for ARM exception handling directives
void ARMTargetELFStreamer::emitArchDefaultAttributes() {
using namespace ARMBuildAttrs;
- setAttributeItem(CPU_name, GetArchDefaultCPUName(Arch), false);
- if (EmittedArch == ARM::INVALID_ARCH)
- setAttributeItem(CPU_arch, GetArchDefaultCPUArch(Arch), false);
+ setAttributeItem(CPU_name,
+ ARM::getCPUAttr(Arch),
+ false);
+
+ if (EmittedArch == ARM::AK_INVALID)
+ setAttributeItem(CPU_arch,
+ ARM::getArchAttr(Arch),
+ false);
else
- setAttributeItem(CPU_arch, GetArchDefaultCPUArch(EmittedArch), false);
+ setAttributeItem(CPU_arch,
+ ARM::getArchAttr(EmittedArch),
+ false);
switch (Arch) {
- case ARM::ARMV2:
- case ARM::ARMV2A:
- case ARM::ARMV3:
- case ARM::ARMV3M:
- case ARM::ARMV4:
- case ARM::ARMV5:
+ case ARM::AK_ARMV2:
+ case ARM::AK_ARMV2A:
+ case ARM::AK_ARMV3:
+ case ARM::AK_ARMV3M:
+ case ARM::AK_ARMV4:
setAttributeItem(ARM_ISA_use, Allowed, false);
break;
- case ARM::ARMV4T:
- case ARM::ARMV5T:
- case ARM::ARMV5TE:
- case ARM::ARMV6:
- case ARM::ARMV6J:
+ case ARM::AK_ARMV4T:
+ case ARM::AK_ARMV5T:
+ case ARM::AK_ARMV5TE:
+ case ARM::AK_ARMV6:
+ case ARM::AK_ARMV6J:
setAttributeItem(ARM_ISA_use, Allowed, false);
setAttributeItem(THUMB_ISA_use, Allowed, false);
break;
- case ARM::ARMV6T2:
+ case ARM::AK_ARMV6T2:
setAttributeItem(ARM_ISA_use, Allowed, false);
setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
break;
- case ARM::ARMV6Z:
- case ARM::ARMV6ZK:
+ case ARM::AK_ARMV6K:
+ case ARM::AK_ARMV6KZ:
setAttributeItem(ARM_ISA_use, Allowed, false);
setAttributeItem(THUMB_ISA_use, Allowed, false);
setAttributeItem(Virtualization_use, AllowTZ, false);
break;
- case ARM::ARMV6M:
+ case ARM::AK_ARMV6M:
setAttributeItem(THUMB_ISA_use, Allowed, false);
break;
- case ARM::ARMV7:
- setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
- break;
-
- case ARM::ARMV7A:
+ case ARM::AK_ARMV7A:
setAttributeItem(CPU_arch_profile, ApplicationProfile, false);
setAttributeItem(ARM_ISA_use, Allowed, false);
setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
break;
- case ARM::ARMV7R:
+ case ARM::AK_ARMV7R:
setAttributeItem(CPU_arch_profile, RealTimeProfile, false);
setAttributeItem(ARM_ISA_use, Allowed, false);
setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
break;
- case ARM::ARMV7M:
+ case ARM::AK_ARMV7M:
setAttributeItem(CPU_arch_profile, MicroControllerProfile, false);
setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
break;
- case ARM::ARMV8A:
+ case ARM::AK_ARMV8A:
+ case ARM::AK_ARMV8_1A:
setAttributeItem(CPU_arch_profile, ApplicationProfile, false);
setAttributeItem(ARM_ISA_use, Allowed, false);
setAttributeItem(THUMB_ISA_use, AllowThumb32, false);
setAttributeItem(Virtualization_use, AllowTZVirtualization, false);
break;
- case ARM::IWMMXT:
+ case ARM::AK_IWMMXT:
setAttributeItem(ARM_ISA_use, Allowed, false);
setAttributeItem(THUMB_ISA_use, Allowed, false);
setAttributeItem(WMMX_arch, AllowWMMXv1, false);
break;
- case ARM::IWMMXT2:
+ case ARM::AK_IWMMXT2:
setAttributeItem(ARM_ISA_use, Allowed, false);
setAttributeItem(THUMB_ISA_use, Allowed, false);
setAttributeItem(WMMX_arch, AllowWMMXv2, false);
}
void ARMTargetELFStreamer::emitFPUDefaultAttributes() {
switch (FPU) {
- case ARM::VFP:
- case ARM::VFPV2:
+ case ARM::FK_VFP:
+ case ARM::FK_VFPV2:
setAttributeItem(ARMBuildAttrs::FP_arch,
ARMBuildAttrs::AllowFPv2,
/* OverwriteExisting= */ false);
break;
- case ARM::VFPV3:
+ case ARM::FK_VFPV3:
setAttributeItem(ARMBuildAttrs::FP_arch,
ARMBuildAttrs::AllowFPv3A,
/* OverwriteExisting= */ false);
break;
- case ARM::VFPV3_D16:
+ case ARM::FK_VFPV3_FP16:
+ setAttributeItem(ARMBuildAttrs::FP_arch,
+ ARMBuildAttrs::AllowFPv3A,
+ /* OverwriteExisting= */ false);
+ setAttributeItem(ARMBuildAttrs::FP_HP_extension,
+ ARMBuildAttrs::AllowHPFP,
+ /* OverwriteExisting= */ false);
+ break;
+
+ case ARM::FK_VFPV3_D16:
+ setAttributeItem(ARMBuildAttrs::FP_arch,
+ ARMBuildAttrs::AllowFPv3B,
+ /* OverwriteExisting= */ false);
+ break;
+
+ case ARM::FK_VFPV3_D16_FP16:
+ setAttributeItem(ARMBuildAttrs::FP_arch,
+ ARMBuildAttrs::AllowFPv3B,
+ /* OverwriteExisting= */ false);
+ setAttributeItem(ARMBuildAttrs::FP_HP_extension,
+ ARMBuildAttrs::AllowHPFP,
+ /* OverwriteExisting= */ false);
+ break;
+
+ case ARM::FK_VFPV3XD:
+ setAttributeItem(ARMBuildAttrs::FP_arch,
+ ARMBuildAttrs::AllowFPv3B,
+ /* OverwriteExisting= */ false);
+ break;
+ case ARM::FK_VFPV3XD_FP16:
setAttributeItem(ARMBuildAttrs::FP_arch,
ARMBuildAttrs::AllowFPv3B,
/* OverwriteExisting= */ false);
+ setAttributeItem(ARMBuildAttrs::FP_HP_extension,
+ ARMBuildAttrs::AllowHPFP,
+ /* OverwriteExisting= */ false);
break;
- case ARM::VFPV4:
+ case ARM::FK_VFPV4:
setAttributeItem(ARMBuildAttrs::FP_arch,
ARMBuildAttrs::AllowFPv4A,
/* OverwriteExisting= */ false);
break;
- case ARM::VFPV4_D16:
+ // ABI_HardFP_use is handled in ARMAsmPrinter, so _SP_D16 is treated the same
+ // as _D16 here.
+ case ARM::FK_FPV4_SP_D16:
+ case ARM::FK_VFPV4_D16:
setAttributeItem(ARMBuildAttrs::FP_arch,
ARMBuildAttrs::AllowFPv4B,
/* OverwriteExisting= */ false);
break;
- case ARM::FP_ARMV8:
+ case ARM::FK_FP_ARMV8:
setAttributeItem(ARMBuildAttrs::FP_arch,
ARMBuildAttrs::AllowFPARMv8A,
/* OverwriteExisting= */ false);
break;
- case ARM::NEON:
+ // FPV5_D16 is identical to FP_ARMV8 except for the number of D registers, so
+ // uses the FP_ARMV8_D16 build attribute.
+ case ARM::FK_FPV5_SP_D16:
+ case ARM::FK_FPV5_D16:
+ setAttributeItem(ARMBuildAttrs::FP_arch,
+ ARMBuildAttrs::AllowFPARMv8B,
+ /* OverwriteExisting= */ false);
+ break;
+
+ case ARM::FK_NEON:
+ setAttributeItem(ARMBuildAttrs::FP_arch,
+ ARMBuildAttrs::AllowFPv3A,
+ /* OverwriteExisting= */ false);
+ setAttributeItem(ARMBuildAttrs::Advanced_SIMD_arch,
+ ARMBuildAttrs::AllowNeon,
+ /* OverwriteExisting= */ false);
+ break;
+
+ case ARM::FK_NEON_FP16:
setAttributeItem(ARMBuildAttrs::FP_arch,
ARMBuildAttrs::AllowFPv3A,
/* OverwriteExisting= */ false);
setAttributeItem(ARMBuildAttrs::Advanced_SIMD_arch,
ARMBuildAttrs::AllowNeon,
/* OverwriteExisting= */ false);
+ setAttributeItem(ARMBuildAttrs::FP_HP_extension,
+ ARMBuildAttrs::AllowHPFP,
+ /* OverwriteExisting= */ false);
break;
- case ARM::NEON_VFPV4:
+ case ARM::FK_NEON_VFPV4:
setAttributeItem(ARMBuildAttrs::FP_arch,
ARMBuildAttrs::AllowFPv4A,
/* OverwriteExisting= */ false);
/* OverwriteExisting= */ false);
break;
- case ARM::NEON_FP_ARMV8:
- case ARM::CRYPTO_NEON_FP_ARMV8:
+ case ARM::FK_NEON_FP_ARMV8:
+ case ARM::FK_CRYPTO_NEON_FP_ARMV8:
setAttributeItem(ARMBuildAttrs::FP_arch,
ARMBuildAttrs::AllowFPARMv8A,
/* OverwriteExisting= */ false);
- setAttributeItem(ARMBuildAttrs::Advanced_SIMD_arch,
- ARMBuildAttrs::AllowNeonARMv8,
- /* OverwriteExisting= */ false);
+ // 'Advanced_SIMD_arch' must be emitted not here, but within
+ // ARMAsmPrinter::emitAttributes(), depending on hasV8Ops() and hasV8_1a()
break;
- case ARM::SOFTVFP:
+ case ARM::FK_SOFTVFP:
+ case ARM::FK_NONE:
break;
default:
case AttributeItem::HiddenAttribute:
break;
case AttributeItem::NumericAttribute:
- Result += getULEBSize(item.Tag);
- Result += getULEBSize(item.IntValue);
+ Result += getULEB128Size(item.Tag);
+ Result += getULEB128Size(item.IntValue);
break;
case AttributeItem::TextAttribute:
- Result += getULEBSize(item.Tag);
+ Result += getULEB128Size(item.Tag);
Result += item.StringValue.size() + 1; // string + '\0'
break;
case AttributeItem::NumericAndTextAttributes:
- Result += getULEBSize(item.Tag);
- Result += getULEBSize(item.IntValue);
+ Result += getULEB128Size(item.Tag);
+ Result += getULEB128Size(item.IntValue);
Result += item.StringValue.size() + 1; // string + '\0';
break;
}
// ]+
// ]*
- if (FPU != ARM::INVALID_FPU)
+ if (FPU != ARM::FK_INVALID)
emitFPUDefaultAttributes();
- if (Arch != ARM::INVALID_ARCH)
+ if (Arch != ARM::AK_INVALID)
emitArchDefaultAttributes();
if (Contents.empty())
if (AttributeSection) {
Streamer.SwitchSection(AttributeSection);
} else {
- AttributeSection =
- Streamer.getContext().getELFSection(".ARM.attributes",
- ELF::SHT_ARM_ATTRIBUTES,
- 0,
- SectionKind::getMetadata());
+ AttributeSection = Streamer.getContext().getELFSection(
+ ".ARM.attributes", ELF::SHT_ARM_ATTRIBUTES, 0);
Streamer.SwitchSection(AttributeSection);
// Format version
Streamer.EmitULEB128IntValue(item.IntValue);
break;
case AttributeItem::TextAttribute:
- Streamer.EmitBytes(item.StringValue.upper());
+ Streamer.EmitBytes(item.StringValue);
Streamer.EmitIntValue(0, 1); // '\0'
break;
case AttributeItem::NumericAndTextAttributes:
Streamer.EmitULEB128IntValue(item.IntValue);
- Streamer.EmitBytes(item.StringValue.upper());
+ Streamer.EmitBytes(item.StringValue);
Streamer.EmitIntValue(0, 1); // '\0'
break;
}
}
Contents.clear();
- FPU = ARM::INVALID_FPU;
+ FPU = ARM::FK_INVALID;
+}
+
+void ARMTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
+ ARMELFStreamer &Streamer = getStreamer();
+ if (!Streamer.IsThumb)
+ return;
+
+ Streamer.getAssembler().registerSymbol(*Symbol);
+ unsigned Type = cast<MCSymbolELF>(Symbol)->getType();
+ if (Type == ELF::STT_FUNC || Type == ELF::STT_GNU_IFUNC)
+ Streamer.EmitThumbFunc(Symbol);
}
+
void
ARMTargetELFStreamer::AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *S) {
getStreamer().EmitFixup(S, FK_Data_4);
}
+
+void ARMTargetELFStreamer::emitThumbSet(MCSymbol *Symbol, const MCExpr *Value) {
+ if (const MCSymbolRefExpr *SRE = dyn_cast<MCSymbolRefExpr>(Value)) {
+ const MCSymbol &Sym = SRE->getSymbol();
+ if (!Sym.isDefined()) {
+ getStreamer().EmitAssignment(Symbol, Value);
+ return;
+ }
+ }
+
+ getStreamer().EmitThumbFunc(Symbol);
+ getStreamer().EmitAssignment(Symbol, Value);
+}
+
void ARMTargetELFStreamer::emitInst(uint32_t Inst, char Suffix) {
getStreamer().emitInst(Inst, Suffix);
}
}
// Get .ARM.extab or .ARM.exidx section
- const MCSectionELF *EHSection = NULL;
- if (const MCSymbol *Group = FnSection.getGroup()) {
- EHSection = getContext().getELFSection(
- EHSecName, Type, Flags | ELF::SHF_GROUP, Kind,
- FnSection.getEntrySize(), Group->getName());
- } else {
- EHSection = getContext().getELFSection(EHSecName, Type, Flags, Kind);
- }
+ const MCSymbolELF *Group = FnSection.getGroup();
+ if (Group)
+ Flags |= ELF::SHF_GROUP;
+ MCSectionELF *EHSection =
+ getContext().getELFSection(EHSecName, Type, Flags, 0, Group,
+ FnSection.getUniqueID(), nullptr, &FnSection);
+
assert(EHSection && "Failed to get the required EH section");
// Switch to .ARM.extab or .ARM.exidx section
}
void ARMELFStreamer::EmitFixup(const MCExpr *Expr, MCFixupKind Kind) {
MCDataFragment *Frag = getOrCreateDataFragment();
- Frag->getFixups().push_back(MCFixup::Create(Frag->getContents().size(), Expr,
+ Frag->getFixups().push_back(MCFixup::create(Frag->getContents().size(), Expr,
Kind));
}
void ARMELFStreamer::Reset() {
- ExTab = NULL;
- FnStart = NULL;
- Personality = NULL;
+ ExTab = nullptr;
+ FnStart = nullptr;
+ Personality = nullptr;
PersonalityIndex = ARM::EHABI::NUM_PERSONALITY_INDEX;
FPReg = ARM::SP;
FPOffset = 0;
}
void ARMELFStreamer::emitFnStart() {
- assert(FnStart == 0);
- FnStart = getContext().CreateTempSymbol();
+ assert(FnStart == nullptr);
+ FnStart = getContext().createTempSymbol();
EmitLabel(FnStart);
}
EmitPersonalityFixup(GetAEABIUnwindPersonalityName(PersonalityIndex));
const MCSymbolRefExpr *FnStartRef =
- MCSymbolRefExpr::Create(FnStart,
+ MCSymbolRefExpr::create(FnStart,
MCSymbolRefExpr::VK_ARM_PREL31,
getContext());
} else if (ExTab) {
// Emit a reference to the unwind opcodes in the ".ARM.extab" section.
const MCSymbolRefExpr *ExTabEntryRef =
- MCSymbolRefExpr::Create(ExTab,
+ MCSymbolRefExpr::create(ExTab,
MCSymbolRefExpr::VK_ARM_PREL31,
getContext());
EmitValue(ExTabEntryRef, 4);
// the second word of exception index table entry. The size of the unwind
// opcodes should always be 4 bytes.
assert(PersonalityIndex == ARM::EHABI::AEABI_UNWIND_CPP_PR0 &&
- "Compact model must use __aeabi_cpp_unwind_pr0 as personality");
+ "Compact model must use __aeabi_unwind_cpp_pr0 as personality");
assert(Opcodes.size() == 4u &&
- "Unwind opcode size for __aeabi_cpp_unwind_pr0 must be equal to 4");
- EmitBytes(StringRef(reinterpret_cast<const char*>(Opcodes.data()),
- Opcodes.size()));
+ "Unwind opcode size for __aeabi_unwind_cpp_pr0 must be equal to 4");
+ uint64_t Intval = Opcodes[0] |
+ Opcodes[1] << 8 |
+ Opcodes[2] << 16 |
+ Opcodes[3] << 24;
+ EmitIntValue(Intval, Opcodes.size());
}
// Switch to the section containing FnStart
// Add the R_ARM_NONE fixup at the same position
void ARMELFStreamer::EmitPersonalityFixup(StringRef Name) {
- const MCSymbol *PersonalitySym = getContext().GetOrCreateSymbol(Name);
+ const MCSymbol *PersonalitySym = getContext().getOrCreateSymbol(Name);
- const MCSymbolRefExpr *PersonalityRef = MCSymbolRefExpr::Create(
+ const MCSymbolRefExpr *PersonalityRef = MCSymbolRefExpr::create(
PersonalitySym, MCSymbolRefExpr::VK_ARM_NONE, getContext());
- AddValueSymbols(PersonalityRef);
+ visitUsedExpr(*PersonalityRef);
MCDataFragment *DF = getOrCreateDataFragment();
- DF->getFixups().push_back(MCFixup::Create(DF->getContents().size(),
+ DF->getFixups().push_back(MCFixup::create(DF->getContents().size(),
PersonalityRef,
MCFixup::getKindForSize(4, false)));
}
// Create .ARM.extab label for offset in .ARM.exidx
assert(!ExTab);
- ExTab = getContext().CreateTempSymbol();
+ ExTab = getContext().createTempSymbol();
EmitLabel(ExTab);
// Emit personality
if (Personality) {
const MCSymbolRefExpr *PersonalityRef =
- MCSymbolRefExpr::Create(Personality,
+ MCSymbolRefExpr::create(Personality,
MCSymbolRefExpr::VK_ARM_PREL31,
getContext());
}
// Emit unwind opcodes
- EmitBytes(StringRef(reinterpret_cast<const char *>(Opcodes.data()),
- Opcodes.size()));
+ assert((Opcodes.size() % 4) == 0 &&
+ "Unwind opcode size for __aeabi_cpp_unwind_pr0 must be multiple of 4");
+ for (unsigned I = 0; I != Opcodes.size(); I += 4) {
+ uint64_t Intval = Opcodes[I] |
+ Opcodes[I + 1] << 8 |
+ Opcodes[I + 2] << 16 |
+ Opcodes[I + 3] << 24;
+ EmitIntValue(Intval, 4);
+ }
// According to ARM EHABI section 9.2, if the __aeabi_unwind_cpp_pr1() or
// __aeabi_unwind_cpp_pr2() is used, then the handler data must be emitted
namespace llvm {
-MCStreamer *createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
- bool isVerboseAsm, bool useCFI,
- bool useDwarfDirectory,
- MCInstPrinter *InstPrint, MCCodeEmitter *CE,
- MCAsmBackend *TAB, bool ShowInst) {
- MCStreamer *S =
- llvm::createAsmStreamer(Ctx, OS, isVerboseAsm, useCFI, useDwarfDirectory,
- InstPrint, CE, TAB, ShowInst);
- new ARMTargetAsmStreamer(*S, OS, *InstPrint, isVerboseAsm);
- return S;
-}
-
- MCELFStreamer* createARMELFStreamer(MCContext &Context, MCAsmBackend &TAB,
- raw_ostream &OS, MCCodeEmitter *Emitter,
- bool RelaxAll, bool NoExecStack,
- bool IsThumb) {
+MCTargetStreamer *createARMTargetAsmStreamer(MCStreamer &S,
+ formatted_raw_ostream &OS,
+ MCInstPrinter *InstPrint,
+ bool isVerboseAsm) {
+ return new ARMTargetAsmStreamer(S, OS, *InstPrint, isVerboseAsm);
+}
+
+MCTargetStreamer *createARMNullTargetStreamer(MCStreamer &S) {
+ return new ARMTargetStreamer(S);
+}
+
+MCTargetStreamer *createARMObjectTargetStreamer(MCStreamer &S,
+ const MCSubtargetInfo &STI) {
+ const Triple &TT = STI.getTargetTriple();
+ if (TT.isOSBinFormatELF())
+ return new ARMTargetELFStreamer(S);
+ return new ARMTargetStreamer(S);
+}
+
+MCELFStreamer *createARMELFStreamer(MCContext &Context, MCAsmBackend &TAB,
+ raw_pwrite_stream &OS,
+ MCCodeEmitter *Emitter, bool RelaxAll,
+ bool IsThumb) {
ARMELFStreamer *S = new ARMELFStreamer(Context, TAB, OS, Emitter, IsThumb);
- new ARMTargetELFStreamer(*S);
// FIXME: This should eventually end up somewhere else where more
// intelligent flag decisions can be made. For now we are just maintaining
// the status quo for ARM and setting EF_ARM_EABI_VER5 as the default.
if (RelaxAll)
S->getAssembler().setRelaxAll(true);
- if (NoExecStack)
- S->getAssembler().setNoExecStack(true);
return S;
}
projects / oota-llvm.git / blobdiff