//
//===----------------------------------------------------------------------===//
-#include "ARMBuildAttrs.h"
#include "ARMArchName.h"
#include "ARMFPUName.h"
#include "ARMRegisterInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.h"
+#include "llvm/Support/ARMBuildAttributes.h"
#include "llvm/Support/ARMEHABI.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>
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 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);
+
public:
- ARMTargetAsmStreamer(formatted_raw_ostream &OS, MCInstPrinter &InstPrinter,
- bool VerboseAsm);
+ ARMTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS,
+ MCInstPrinter &InstPrinter, bool VerboseAsm);
};
-ARMTargetAsmStreamer::ARMTargetAsmStreamer(formatted_raw_ostream &OS,
+ARMTargetAsmStreamer::ARMTargetAsmStreamer(MCStreamer &S,
+ formatted_raw_ostream &OS,
MCInstPrinter &InstPrinter,
bool VerboseAsm)
- : OS(OS), InstPrinter(InstPrinter), IsVerboseAsm(VerboseAsm) {}
+ : ARMTargetStreamer(S), OS(OS), InstPrinter(InstPrinter),
+ IsVerboseAsm(VerboseAsm) {}
void ARMTargetAsmStreamer::emitFnStart() { OS << "\t.fnstart\n"; }
void ARMTargetAsmStreamer::emitFnEnd() { OS << "\t.fnend\n"; }
void ARMTargetAsmStreamer::emitCantUnwind() { OS << "\t.cantunwind\n"; }
void ARMTargetAsmStreamer::emitPersonality(const MCSymbol *Personality) {
OS << "\t.personality " << Personality->getName() << '\n';
}
+void ARMTargetAsmStreamer::emitPersonalityIndex(unsigned Index) {
+ OS << "\t.personalityindex " << Index << '\n';
+}
void ARMTargetAsmStreamer::emitHandlerData() { OS << "\t.handlerdata\n"; }
void ARMTargetAsmStreamer::emitSetFP(unsigned FpReg, unsigned SpReg,
int64_t Offset) {
OS << ", #" << Offset;
OS << '\n';
}
+void ARMTargetAsmStreamer::emitMovSP(unsigned Reg, int64_t Offset) {
+ assert((Reg != ARM::SP && Reg != ARM::PC) &&
+ "the operand of .movsp cannot be either sp or pc");
+
+ OS << "\t.movsp\t";
+ InstPrinter.printRegName(OS, Reg);
+ if (Offset)
+ OS << ", #" << Offset;
+ OS << '\n';
+}
void ARMTargetAsmStreamer::emitPad(int64_t Offset) {
OS << "\t.pad\t#" << Offset << '\n';
}
void ARMTargetAsmStreamer::emitArch(unsigned Arch) {
OS << "\t.arch\t" << GetArchName(Arch) << "\n";
}
+void ARMTargetAsmStreamer::emitObjectArch(unsigned Arch) {
+ OS << "\t.object_arch\t" << GetArchName(Arch) << '\n';
+}
void ARMTargetAsmStreamer::emitFPU(unsigned FPU) {
OS << "\t.fpu\t" << GetFPUName(FPU) << "\n";
}
void ARMTargetAsmStreamer::finishAttributeSection() {
}
+void
+ARMTargetAsmStreamer::AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *S) {
+ OS << "\t.tlsdescseq\t" << S->getSymbol().getName();
+}
void ARMTargetAsmStreamer::emitInst(uint32_t Inst, char Suffix) {
OS << "\t.inst";
OS << "\t0x" << utohexstr(Inst) << "\n";
}
+void ARMTargetAsmStreamer::emitUnwindRaw(int64_t Offset,
+ const SmallVectorImpl<uint8_t> &Opcodes) {
+ OS << "\t.unwind_raw " << Offset;
+ for (SmallVectorImpl<uint8_t>::const_iterator OCI = Opcodes.begin(),
+ OCE = Opcodes.end();
+ OCI != OCE; ++OCI)
+ OS << ", 0x" << utohexstr(*OCI);
+ OS << '\n';
+}
+
class ARMTargetELFStreamer : public ARMTargetStreamer {
private:
// This structure holds all attributes, accounting for
StringRef CurrentVendor;
unsigned FPU;
unsigned Arch;
+ 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;
- }
-
AttributeItem *getAttributeItem(unsigned Attribute) {
for (size_t i = 0; i < Contents.size(); ++i)
if (Contents[i].Tag == Attribute)
if (AttributeItem *Item = getAttributeItem(Attribute)) {
if (!OverwriteExisting)
return;
+ Item->Type = AttributeItem::NumericAttribute;
Item->IntValue = Value;
return;
}
if (AttributeItem *Item = getAttributeItem(Attribute)) {
if (!OverwriteExisting)
return;
+ Item->Type = AttributeItem::TextAttribute;
Item->StringValue = Value;
return;
}
if (AttributeItem *Item = getAttributeItem(Attribute)) {
if (!OverwriteExisting)
return;
+ Item->Type = AttributeItem::NumericAndTextAttributes;
Item->IntValue = IntValue;
Item->StringValue = StringValue;
return;
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 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);
+
size_t calculateContentSize() const;
public:
- ARMTargetELFStreamer()
- : ARMTargetStreamer(), CurrentVendor("aeabi"), FPU(ARM::INVALID_FPU),
- Arch(ARM::INVALID_ARCH), AttributeSection(0) {
- }
+ ARMTargetELFStreamer(MCStreamer &S)
+ : ARMTargetStreamer(S), CurrentVendor("aeabi"), FPU(ARM::INVALID_FPU),
+ Arch(ARM::INVALID_ARCH), EmittedArch(ARM::INVALID_ARCH),
+ AttributeSection(0) {}
};
/// Extend the generic ELFStreamer class so that it can emit mapping symbols at
public:
friend class ARMTargetELFStreamer;
- ARMELFStreamer(MCContext &Context, MCTargetStreamer *TargetStreamer,
- MCAsmBackend &TAB, raw_ostream &OS, MCCodeEmitter *Emitter,
- bool IsThumb)
- : MCELFStreamer(Context, TargetStreamer, TAB, OS, Emitter),
- IsThumb(IsThumb), MappingSymbolCounter(0), LastEMS(EMS_None) {
+ ARMELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
+ MCCodeEmitter *Emitter, bool IsThumb)
+ : MCELFStreamer(Context, TAB, OS, Emitter), IsThumb(IsThumb),
+ MappingSymbolCounter(0), LastEMS(EMS_None) {
Reset();
}
void emitFnEnd();
void emitCantUnwind();
void emitPersonality(const MCSymbol *Per);
+ void emitPersonalityIndex(unsigned index);
void emitHandlerData();
void emitSetFP(unsigned NewFpReg, unsigned NewSpReg, int64_t Offset = 0);
+ void emitMovSP(unsigned Reg, int64_t Offset = 0);
void emitPad(int64_t Offset);
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) {
/// 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) {
+ virtual void EmitInstruction(const MCInst& Inst, const MCSubtargetInfo &STI) {
if (IsThumb)
EmitThumbMappingSymbol();
else
EmitARMMappingSymbol();
- MCELFStreamer::EmitInstruction(Inst);
+ MCELFStreamer::EmitInstruction(Inst, STI);
}
virtual void emitInst(uint32_t Inst, char Suffix) {
void SwitchToExTabSection(const MCSymbol &FnStart);
void SwitchToExIdxSection(const MCSymbol &FnStart);
+ void EmitFixup(const MCExpr *Expr, MCFixupKind Kind);
+
bool IsThumb;
int64_t MappingSymbolCounter;
} // end anonymous namespace
ARMELFStreamer &ARMTargetELFStreamer::getStreamer() {
- ARMELFStreamer *S = static_cast<ARMELFStreamer *>(Streamer);
- return *S;
+ return static_cast<ARMELFStreamer &>(Streamer);
}
void ARMTargetELFStreamer::emitFnStart() { getStreamer().emitFnStart(); }
void ARMTargetELFStreamer::emitPersonality(const MCSymbol *Personality) {
getStreamer().emitPersonality(Personality);
}
+void ARMTargetELFStreamer::emitPersonalityIndex(unsigned Index) {
+ getStreamer().emitPersonalityIndex(Index);
+}
void ARMTargetELFStreamer::emitHandlerData() {
getStreamer().emitHandlerData();
}
int64_t Offset) {
getStreamer().emitSetFP(FpReg, SpReg, Offset);
}
+void ARMTargetELFStreamer::emitMovSP(unsigned Reg, int64_t Offset) {
+ getStreamer().emitMovSP(Reg, Offset);
+}
void ARMTargetELFStreamer::emitPad(int64_t Offset) {
getStreamer().emitPad(Offset);
}
bool isVector) {
getStreamer().emitRegSave(RegList, isVector);
}
+void ARMTargetELFStreamer::emitUnwindRaw(int64_t Offset,
+ const SmallVectorImpl<uint8_t> &Opcodes) {
+ getStreamer().emitUnwindRaw(Offset, Opcodes);
+}
void ARMTargetELFStreamer::switchVendor(StringRef Vendor) {
assert(!Vendor.empty() && "Vendor cannot be empty.");
void ARMTargetELFStreamer::emitArch(unsigned Value) {
Arch = Value;
}
+void ARMTargetELFStreamer::emitObjectArch(unsigned Value) {
+ EmittedArch = Value;
+}
void ARMTargetELFStreamer::emitArchDefaultAttributes() {
using namespace ARMBuildAttrs;
+
setAttributeItem(CPU_name, GetArchDefaultCPUName(Arch), false);
- setAttributeItem(CPU_arch, GetArchDefaultCPUArch(Arch), false);
+ if (EmittedArch == ARM::INVALID_ARCH)
+ setAttributeItem(CPU_arch, GetArchDefaultCPUArch(Arch), false);
+ else
+ setAttributeItem(CPU_arch, GetArchDefaultCPUArch(EmittedArch), false);
switch (Arch) {
case ARM::ARMV2:
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;
}
Contents.clear();
FPU = ARM::INVALID_FPU;
}
+void
+ARMTargetELFStreamer::AnnotateTLSDescriptorSequence(const MCSymbolRefExpr *S) {
+ getStreamer().EmitFixup(S, FK_Data_4);
+}
void ARMTargetELFStreamer::emitInst(uint32_t Inst, char Suffix) {
getStreamer().emitInst(Inst, Suffix);
}
void ARMELFStreamer::FinishImpl() {
- MCTargetStreamer &TS = getTargetStreamer();
+ MCTargetStreamer &TS = *getTargetStreamer();
ARMTargetStreamer &ATS = static_cast<ARMTargetStreamer &>(TS);
ATS.finishAttributeSection();
// Switch to .ARM.extab or .ARM.exidx section
SwitchSection(EHSection);
- EmitCodeAlignment(4, 0);
+ EmitCodeAlignment(4);
}
inline void ARMELFStreamer::SwitchToExTabSection(const MCSymbol &FnStart) {
SectionKind::getDataRel(),
FnStart);
}
+void ARMELFStreamer::EmitFixup(const MCExpr *Expr, MCFixupKind Kind) {
+ MCDataFragment *Frag = getOrCreateDataFragment();
+ Frag->getFixups().push_back(MCFixup::Create(Frag->getContents().size(), Expr,
+ Kind));
+}
void ARMELFStreamer::Reset() {
ExTab = NULL;
}
void ARMELFStreamer::emitFnEnd() {
- assert(FnStart && ".fnstart must preceeds .fnend");
+ assert(FnStart && ".fnstart must precedes .fnend");
// Emit unwind opcodes if there is no .handlerdata directive
if (!ExTab && !CantUnwind)
UnwindOpAsm.setPersonality(Per);
}
+void ARMELFStreamer::emitPersonalityIndex(unsigned Index) {
+ assert(Index < ARM::EHABI::NUM_PERSONALITY_INDEX && "invalid index");
+ PersonalityIndex = Index;
+}
+
void ARMELFStreamer::emitSetFP(unsigned NewFPReg, unsigned NewSPReg,
int64_t Offset) {
assert((NewSPReg == ARM::SP || NewSPReg == FPReg) &&
FPOffset += Offset;
}
+void ARMELFStreamer::emitMovSP(unsigned Reg, int64_t Offset) {
+ assert((Reg != ARM::SP && Reg != ARM::PC) &&
+ "the operand of .movsp cannot be either sp or pc");
+ assert(FPReg == ARM::SP && "current FP must be SP");
+
+ FlushPendingOffset();
+
+ FPReg = Reg;
+ FPOffset = SPOffset + Offset;
+
+ const MCRegisterInfo *MRI = getContext().getRegisterInfo();
+ UnwindOpAsm.EmitSetSP(MRI->getEncodingValue(FPReg));
+}
+
void ARMELFStreamer::emitPad(int64_t Offset) {
// Track the change of the $sp offset
SPOffset -= Offset;
UnwindOpAsm.EmitRegSave(Mask);
}
+void ARMELFStreamer::emitUnwindRaw(int64_t Offset,
+ const SmallVectorImpl<uint8_t> &Opcodes) {
+ FlushPendingOffset();
+ SPOffset = SPOffset - Offset;
+ UnwindOpAsm.EmitRaw(Opcodes);
+}
+
namespace llvm {
MCStreamer *createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
- bool isVerboseAsm, bool useLoc, bool useCFI,
+ bool isVerboseAsm, bool useCFI,
bool useDwarfDirectory,
MCInstPrinter *InstPrint, MCCodeEmitter *CE,
MCAsmBackend *TAB, bool ShowInst) {
- ARMTargetAsmStreamer *S = new ARMTargetAsmStreamer(OS, *InstPrint,
- isVerboseAsm);
-
- return llvm::createAsmStreamer(Ctx, S, OS, isVerboseAsm, useLoc, useCFI,
- useDwarfDirectory, InstPrint, CE, TAB,
- 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) {
- ARMTargetELFStreamer *TS = new ARMTargetELFStreamer();
- ARMELFStreamer *S =
- new ARMELFStreamer(Context, TS, TAB, OS, Emitter, 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.
projects / oota-llvm.git / blobdiff