void BTFTypeFuncProto::emitType(MCStreamer &OS) {
BTFTypeBase::emitType(OS);
for (const auto &Param : Parameters) {
OS.EmitIntValue(Param.NameOff, 4);
OS.EmitIntValue(Param.Type, 4);
}
}
void BTFTypeEnum::emitType(MCStreamer &OS) {
BTFTypeBase::emitType(OS);
for (const auto &Enum : EnumValues) {
OS.EmitIntValue(Enum.NameOff, 4);
OS.EmitIntValue(Enum.Val, 4);
}
}
/// Emit a BTF common type.
void BTFTypeBase::emitType(MCStreamer &OS) {
OS.AddComment(std::string(BTFKindStr[Kind]) + "(id = " + std::to_string(Id) +
")");
OS.EmitIntValue(BTFType.NameOff, 4);
OS.AddComment("0x" + Twine::utohexstr(BTFType.Info));
OS.EmitIntValue(BTFType.Info, 4);
OS.EmitIntValue(BTFType.Size, 4);
}
void BTFTypeStruct::emitType(MCStreamer &OS) {
BTFTypeBase::emitType(OS);
for (const auto &Member : Members) {
OS.EmitIntValue(Member.NameOff, 4);
OS.EmitIntValue(Member.Type, 4);
OS.AddComment("0x" + Twine::utohexstr(Member.Offset));
OS.EmitIntValue(Member.Offset, 4);
}
}
/// emitModuleFlags - Emit the module flags that specify the garbage collection
/// information.
void TargetLoweringObjectFileMachO::
emitModuleFlags(MCStreamer &Streamer,
ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
Mangler *Mang, const TargetMachine &TM) const {
unsigned VersionVal = 0;
unsigned ImageInfoFlags = 0;
StringRef SectionVal;
for (ArrayRef<Module::ModuleFlagEntry>::iterator
i = ModuleFlags.begin(), e = ModuleFlags.end(); i != e; ++i) {
const Module::ModuleFlagEntry &MFE = *i;
// Ignore flags with 'Require' behavior.
if (MFE.Behavior == Module::Require)
continue;
StringRef Key = MFE.Key->getString();
Value *Val = MFE.Val;
if (Key == "Objective-C Image Info Version")
VersionVal = cast<ConstantInt>(Val)->getZExtValue();
else if (Key == "Objective-C Garbage Collection" ||
Key == "Objective-C GC Only" ||
Key == "Objective-C Is Simulated")
ImageInfoFlags |= cast<ConstantInt>(Val)->getZExtValue();
else if (Key == "Objective-C Image Info Section")
SectionVal = cast<MDString>(Val)->getString();
}
// The section is mandatory. If we don't have it, then we don't have GC info.
if (SectionVal.empty()) return;
StringRef Segment, Section;
unsigned TAA = 0, StubSize = 0;
bool TAAParsed;
std::string ErrorCode =
MCSectionMachO::ParseSectionSpecifier(SectionVal, Segment, Section,
TAA, TAAParsed, StubSize);
if (!ErrorCode.empty())
// If invalid, report the error with report_fatal_error.
report_fatal_error("Invalid section specifier '" + Section + "': " +
ErrorCode + ".");
// Get the section.
const MCSectionMachO *S =
getContext().getMachOSection(Segment, Section, TAA, StubSize,
SectionKind::getDataNoRel());
Streamer.SwitchSection(S);
Streamer.EmitLabel(getContext().
GetOrCreateSymbol(StringRef("L_OBJC_IMAGE_INFO")));
Streamer.EmitIntValue(VersionVal, 4);
Streamer.EmitIntValue(ImageInfoFlags, 4);
Streamer.AddBlankLine();
}
static void
writeIndexTable(MCStreamer &Out, ArrayRef<unsigned> ContributionOffsets,
const MapVector<uint64_t, UnitIndexEntry> &IndexEntries,
uint32_t DWARFUnitIndex::Entry::SectionContribution::*Field) {
for (const auto &E : IndexEntries)
for (size_t i = 0; i != array_lengthof(E.second.Contributions); ++i)
if (ContributionOffsets[i])
Out.EmitIntValue(E.second.Contributions[i].*Field, 4);
}
void TargetLoweringObjectFileELF::emitModuleMetadata(
MCStreamer &Streamer, Module &M, const TargetMachine &TM) const {
unsigned Version = 0;
unsigned Flags = 0;
StringRef Section;
GetObjCImageInfo(M, Version, Flags, Section);
if (Section.empty())
return;
auto &C = getContext();
auto *S = C.getELFSection(Section, ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
Streamer.SwitchSection(S);
Streamer.EmitLabel(C.getOrCreateSymbol(StringRef("OBJC_IMAGE_INFO")));
Streamer.EmitIntValue(Version, 4);
Streamer.EmitIntValue(Flags, 4);
Streamer.AddBlankLine();
}
void TargetLoweringObjectFileMachO::emitModuleMetadata(
MCStreamer &Streamer, Module &M, const TargetMachine &TM) const {
// Emit the linker options if present.
if (auto *LinkerOptions = M.getNamedMetadata("llvm.linker.options")) {
for (const auto &Option : LinkerOptions->operands()) {
SmallVector<std::string, 4> StrOptions;
for (const auto &Piece : cast<MDNode>(Option)->operands())
StrOptions.push_back(cast<MDString>(Piece)->getString());
Streamer.EmitLinkerOptions(StrOptions);
}
}
unsigned VersionVal = 0;
unsigned ImageInfoFlags = 0;
StringRef SectionVal;
GetObjCImageInfo(M, VersionVal, ImageInfoFlags, SectionVal);
// The section is mandatory. If we don't have it, then we don't have GC info.
if (SectionVal.empty())
return;
StringRef Segment, Section;
unsigned TAA = 0, StubSize = 0;
bool TAAParsed;
std::string ErrorCode =
MCSectionMachO::ParseSectionSpecifier(SectionVal, Segment, Section,
TAA, TAAParsed, StubSize);
if (!ErrorCode.empty())
// If invalid, report the error with report_fatal_error.
report_fatal_error("Invalid section specifier '" + Section + "': " +
ErrorCode + ".");
// Get the section.
MCSectionMachO *S = getContext().getMachOSection(
Segment, Section, TAA, StubSize, SectionKind::getData());
Streamer.SwitchSection(S);
Streamer.EmitLabel(getContext().
getOrCreateSymbol(StringRef("L_OBJC_IMAGE_INFO")));
Streamer.EmitIntValue(VersionVal, 4);
Streamer.EmitIntValue(ImageInfoFlags, 4);
Streamer.AddBlankLine();
}
static void EmitUnwindCode(MCStreamer &streamer, MCSymbol *begin,
MCWin64EHInstruction &inst) {
uint8_t b1, b2;
uint16_t w;
b2 = (inst.getOperation() & 0x0F);
switch (inst.getOperation()) {
case Win64EH::UOP_PushNonVol:
EmitAbsDifference(streamer, inst.getLabel(), begin);
b2 |= (inst.getRegister() & 0x0F) << 4;
streamer.EmitIntValue(b2, 1);
break;
case Win64EH::UOP_AllocLarge:
EmitAbsDifference(streamer, inst.getLabel(), begin);
if (inst.getSize() > 512*1024-8) {
b2 |= 0x10;
streamer.EmitIntValue(b2, 1);
w = inst.getSize() & 0xFFF8;
streamer.EmitIntValue(w, 2);
w = inst.getSize() >> 16;
} else {
static void
writeIndex(MCStreamer &Out, MCSection *Section,
ArrayRef<unsigned> ContributionOffsets,
const MapVector<uint64_t, UnitIndexEntry> &IndexEntries) {
if (IndexEntries.empty())
return;
unsigned Columns = 0;
for (auto &C : ContributionOffsets)
if (C)
++Columns;
std::vector<unsigned> Buckets(NextPowerOf2(3 * IndexEntries.size() / 2));
uint64_t Mask = Buckets.size() - 1;
size_t i = 0;
for (const auto &P : IndexEntries) {
auto S = P.first;
auto H = S & Mask;
auto HP = ((S >> 32) & Mask) | 1;
while (Buckets[H]) {
assert(S != IndexEntries.begin()[Buckets[H] - 1].first &&
"Duplicate unit");
H = (H + HP) & Mask;
}
Buckets[H] = i + 1;
++i;
}
Out.SwitchSection(Section);
Out.EmitIntValue(2, 4); // Version
Out.EmitIntValue(Columns, 4); // Columns
Out.EmitIntValue(IndexEntries.size(), 4); // Num Units
Out.EmitIntValue(Buckets.size(), 4); // Num Buckets
// Write the signatures.
for (const auto &I : Buckets)
Out.EmitIntValue(I ? IndexEntries.begin()[I - 1].first : 0, 8);
// Write the indexes.
for (const auto &I : Buckets)
Out.EmitIntValue(I, 4);
// Write the column headers (which sections will appear in the table)
for (size_t i = 0; i != ContributionOffsets.size(); ++i)
if (ContributionOffsets[i])
Out.EmitIntValue(i + DW_SECT_INFO, 4);
// Write the offsets.
writeIndexTable(Out, ContributionOffsets, IndexEntries,
&DWARFUnitIndex::Entry::SectionContribution::Offset);
// Write the lengths.
writeIndexTable(Out, ContributionOffsets, IndexEntries,
&DWARFUnitIndex::Entry::SectionContribution::Length);
}
// Integrated assembler version
void
MipsReginfo::emitMipsReginfoSectionCG(MCStreamer &OS,
const TargetLoweringObjectFile &TLOF,
const MipsSubtarget &MST) const
{
if (OS.hasRawTextSupport())
return;
const MipsTargetObjectFile &TLOFELF =
static_cast<const MipsTargetObjectFile &>(TLOF);
OS.SwitchSection(TLOFELF.getReginfoSection());
// .reginfo
if (MST.isABI_O32()) {
OS.EmitIntValue(0, 4); // ri_gprmask
OS.EmitIntValue(0, 4); // ri_cpr[0]mask
OS.EmitIntValue(0, 4); // ri_cpr[1]mask
OS.EmitIntValue(0, 4); // ri_cpr[2]mask
OS.EmitIntValue(0, 4); // ri_cpr[3]mask
OS.EmitIntValue(0, 4); // ri_gp_value
}
// .MIPS.options
else if (MST.isABI_N64()) {
OS.EmitIntValue(1, 1); // kind
OS.EmitIntValue(40, 1); // size
OS.EmitIntValue(0, 2); // section
OS.EmitIntValue(0, 4); // info
OS.EmitIntValue(0, 4); // ri_gprmask
OS.EmitIntValue(0, 4); // pad
OS.EmitIntValue(0, 4); // ri_cpr[0]mask
OS.EmitIntValue(0, 4); // ri_cpr[1]mask
OS.EmitIntValue(0, 4); // ri_cpr[2]mask
OS.EmitIntValue(0, 4); // ri_cpr[3]mask
OS.EmitIntValue(0, 8); // ri_gp_value
}
else llvm_unreachable("Unsupported abi for reginfo");
}
void TargetLoweringObjectFileCOFF::emitModuleMetadata(
MCStreamer &Streamer, Module &M, const TargetMachine &TM) const {
if (NamedMDNode *LinkerOptions = M.getNamedMetadata("llvm.linker.options")) {
// Emit the linker options to the linker .drectve section. According to the
// spec, this section is a space-separated string containing flags for
// linker.
MCSection *Sec = getDrectveSection();
Streamer.SwitchSection(Sec);
for (const auto &Option : LinkerOptions->operands()) {
for (const auto &Piece : cast<MDNode>(Option)->operands()) {
// Lead with a space for consistency with our dllexport implementation.
std::string Directive(" ");
Directive.append(cast<MDString>(Piece)->getString());
Streamer.EmitBytes(Directive);
}
}
}
unsigned Version = 0;
unsigned Flags = 0;
StringRef Section;
GetObjCImageInfo(M, Version, Flags, Section);
if (Section.empty())
return;
auto &C = getContext();
auto *S = C.getCOFFSection(
Section, COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
SectionKind::getReadOnly());
Streamer.SwitchSection(S);
Streamer.EmitLabel(C.getOrCreateSymbol(StringRef("OBJC_IMAGE_INFO")));
Streamer.EmitIntValue(Version, 4);
Streamer.EmitIntValue(Flags, 4);
Streamer.AddBlankLine();
}
static std::error_code
writeStringsAndOffsets(MCStreamer &Out, StringMap<uint32_t> &Strings,
uint32_t &StringOffset, MCSection *StrSection,
MCSection *StrOffsetSection, StringRef CurStrSection,
StringRef CurStrOffsetSection) {
// Could possibly produce an error or warning if one of these was non-null but
// the other was null.
if (CurStrSection.empty() || CurStrOffsetSection.empty())
return std::error_code();
DenseMap<uint32_t, uint32_t> OffsetRemapping;
DataExtractor Data(CurStrSection, true, 0);
uint32_t LocalOffset = 0;
uint32_t PrevOffset = 0;
while (const char *s = Data.getCStr(&LocalOffset)) {
StringRef Str(s, LocalOffset - PrevOffset - 1);
auto Pair = Strings.insert(std::make_pair(Str, StringOffset));
if (Pair.second) {
Out.SwitchSection(StrSection);
Out.EmitBytes(
StringRef(Pair.first->getKeyData(), Pair.first->getKeyLength() + 1));
StringOffset += Str.size() + 1;
}
OffsetRemapping[PrevOffset] = Pair.first->second;
PrevOffset = LocalOffset;
}
Data = DataExtractor(CurStrOffsetSection, true, 0);
Out.SwitchSection(StrOffsetSection);
uint32_t Offset = 0;
uint64_t Size = CurStrOffsetSection.size();
while (Offset < Size) {
auto OldOffset = Data.getU32(&Offset);
auto NewOffset = OffsetRemapping[OldOffset];
Out.EmitIntValue(NewOffset, 4);
}
return std::error_code();
}
static void
emitNonLazySymbolPointer(MCStreamer &OutStreamer, MCSymbol *StubLabel,
MachineModuleInfoImpl::StubValueTy &MCSym) {
// L_foo$stub:
OutStreamer.EmitLabel(StubLabel);
// .indirect_symbol _foo
OutStreamer.EmitSymbolAttribute(MCSym.getPointer(), MCSA_IndirectSymbol);
if (MCSym.getInt())
// External to current translation unit.
OutStreamer.EmitIntValue(0, 4/*size*/);
else
// Internal to current translation unit.
//
// When we place the LSDA into the TEXT section, the type info
// pointers need to be indirect and pc-rel. We accomplish this by
// using NLPs; however, sometimes the types are local to the file.
// We need to fill in the value for the NLP in those cases.
OutStreamer.EmitValue(
MCSymbolRefExpr::create(MCSym.getPointer(), OutStreamer.getContext()),
4 /*size*/);
}
void BTFTypeInt::emitType(MCStreamer &OS) {
BTFTypeBase::emitType(OS);
OS.AddComment("0x" + Twine::utohexstr(IntVal));
OS.EmitIntValue(IntVal, 4);
}
/// emitModuleFlags - Perform code emission for module flags.
void TargetLoweringObjectFileMachO::
emitModuleFlags(MCStreamer &Streamer,
ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
Mangler &Mang, const TargetMachine &TM) const {
unsigned VersionVal = 0;
unsigned ImageInfoFlags = 0;
MDNode *LinkerOptions = nullptr;
StringRef SectionVal;
for (ArrayRef<Module::ModuleFlagEntry>::iterator
i = ModuleFlags.begin(), e = ModuleFlags.end(); i != e; ++i) {
const Module::ModuleFlagEntry &MFE = *i;
// Ignore flags with 'Require' behavior.
if (MFE.Behavior == Module::Require)
continue;
StringRef Key = MFE.Key->getString();
Metadata *Val = MFE.Val;
if (Key == "Objective-C Image Info Version") {
VersionVal = mdconst::extract<ConstantInt>(Val)->getZExtValue();
} else if (Key == "Objective-C Garbage Collection" ||
Key == "Objective-C GC Only" ||
Key == "Objective-C Is Simulated" ||
Key == "Objective-C Image Swift Version") {
ImageInfoFlags |= mdconst::extract<ConstantInt>(Val)->getZExtValue();
} else if (Key == "Objective-C Image Info Section") {
SectionVal = cast<MDString>(Val)->getString();
} else if (Key == "Linker Options") {
LinkerOptions = cast<MDNode>(Val);
}
}
// Emit the linker options if present.
if (LinkerOptions) {
for (unsigned i = 0, e = LinkerOptions->getNumOperands(); i != e; ++i) {
MDNode *MDOptions = cast<MDNode>(LinkerOptions->getOperand(i));
SmallVector<std::string, 4> StrOptions;
// Convert to strings.
for (unsigned ii = 0, ie = MDOptions->getNumOperands(); ii != ie; ++ii) {
MDString *MDOption = cast<MDString>(MDOptions->getOperand(ii));
StrOptions.push_back(MDOption->getString());
}
Streamer.EmitLinkerOptions(StrOptions);
}
}
// The section is mandatory. If we don't have it, then we don't have GC info.
if (SectionVal.empty()) return;
StringRef Segment, Section;
unsigned TAA = 0, StubSize = 0;
bool TAAParsed;
std::string ErrorCode =
MCSectionMachO::ParseSectionSpecifier(SectionVal, Segment, Section,
TAA, TAAParsed, StubSize);
if (!ErrorCode.empty())
// If invalid, report the error with report_fatal_error.
report_fatal_error("Invalid section specifier '" + Section + "': " +
ErrorCode + ".");
// Get the section.
const MCSectionMachO *S =
getContext().getMachOSection(Segment, Section, TAA, StubSize,
SectionKind::getDataNoRel());
Streamer.SwitchSection(S);
Streamer.EmitLabel(getContext().
GetOrCreateSymbol(StringRef("L_OBJC_IMAGE_INFO")));
Streamer.EmitIntValue(VersionVal, 4);
Streamer.EmitIntValue(ImageInfoFlags, 4);
Streamer.AddBlankLine();
}
void BTFTypeArray::emitType(MCStreamer &OS) {
BTFTypeBase::emitType(OS);
OS.EmitIntValue(ArrayInfo.ElemType, 4);
OS.EmitIntValue(ArrayInfo.IndexType, 4);
OS.EmitIntValue(ArrayInfo.Nelems, 4);
}
static std::error_code write(MCStreamer &Out, ArrayRef<std::string> Inputs) {
const auto &MCOFI = *Out.getContext().getObjectFileInfo();
MCSection *const StrSection = MCOFI.getDwarfStrDWOSection();
MCSection *const StrOffsetSection = MCOFI.getDwarfStrOffDWOSection();
const StringMap<std::pair<MCSection *, DWARFSectionKind>> KnownSections = {
{"debug_info.dwo", {MCOFI.getDwarfInfoDWOSection(), DW_SECT_INFO}},
{"debug_types.dwo", {MCOFI.getDwarfTypesDWOSection(), DW_SECT_TYPES}},
{"debug_str_offsets.dwo", {StrOffsetSection, DW_SECT_STR_OFFSETS}},
{"debug_str.dwo", {StrSection, static_cast<DWARFSectionKind>(0)}},
{"debug_loc.dwo", {MCOFI.getDwarfLocDWOSection(), DW_SECT_LOC}},
{"debug_abbrev.dwo", {MCOFI.getDwarfAbbrevDWOSection(), DW_SECT_ABBREV}}};
struct UnitIndexEntry {
uint64_t Signature;
DWARFUnitIndex::Entry::SectionContribution Contributions[8];
};
std::vector<UnitIndexEntry> IndexEntries;
StringMap<uint32_t> Strings;
uint32_t StringOffset = 0;
uint64_t UnitIndex = 0;
uint32_t ContributionOffsets[8] = {};
for (const auto &Input : Inputs) {
auto ErrOrObj = object::ObjectFile::createObjectFile(Input);
if (!ErrOrObj)
return ErrOrObj.getError();
IndexEntries.emplace_back();
UnitIndexEntry &CurEntry = IndexEntries.back();
CurEntry.Signature = UnitIndex++;
StringRef CurStrSection;
StringRef CurStrOffsetSection;
for (const auto &Section : ErrOrObj->getBinary()->sections()) {
StringRef Name;
if (std::error_code Err = Section.getName(Name))
return Err;
auto SectionPair =
KnownSections.find(Name.substr(Name.find_first_not_of("._")));
if (SectionPair == KnownSections.end())
continue;
StringRef Contents;
if (auto Err = Section.getContents(Contents))
return Err;
if (DWARFSectionKind Kind = SectionPair->second.second) {
auto Index = Kind - DW_SECT_INFO;
CurEntry.Contributions[Index].Offset = ContributionOffsets[Index];
ContributionOffsets[Index] +=
(CurEntry.Contributions[Index].Length = Contents.size());
}
MCSection *OutSection = SectionPair->second.first;
if (OutSection == StrOffsetSection)
CurStrOffsetSection = Contents;
else if (OutSection == StrSection)
CurStrSection = Contents;
else {
Out.SwitchSection(OutSection);
Out.EmitBytes(Contents);
}
}
if (auto Err = writeStringsAndOffsets(Out, Strings, StringOffset,
StrSection, StrOffsetSection,
CurStrSection, CurStrOffsetSection))
return Err;
}
Out.SwitchSection(MCOFI.getDwarfCUIndexSection());
Out.EmitIntValue(2, 4); // Version
Out.EmitIntValue(8, 4); // Columns
Out.EmitIntValue(IndexEntries.size(), 4); // Num Units
// FIXME: This is not the right number of buckets for a real hash.
Out.EmitIntValue(IndexEntries.size(), 4); // Num Buckets
// Write the signatures.
for (const auto &E : IndexEntries)
Out.EmitIntValue(E.Signature, 8);
// Write the indexes.
for (size_t i = 0; i != IndexEntries.size(); ++i)
Out.EmitIntValue(i + 1, 4);
// Write the column headers (which sections will appear in the table)
for (size_t i = 1; i != 9; ++i)
Out.EmitIntValue(i, 4);
// Write the offsets.
for (const auto &E : IndexEntries)
for (const auto &C : E.Contributions)
Out.EmitIntValue(C.Offset, 4);
// Write the lengths.
for (const auto &E : IndexEntries)
for (const auto &C : E.Contributions)
Out.EmitIntValue(C.Length, 4);
return std::error_code();
}
void EmitCFIInstruction(MCStreamer &Streamer,
const MCCFIInstruction &Instr,
int &CFAOffset, int DataAlignmentFactor) {
// Same as MCDwarf::EmitCFIInstruction ()
// FIXME: Unify
int dataAlignmentFactor = DataAlignmentFactor;
bool VerboseAsm = Streamer.isVerboseAsm();
switch (Instr.getOperation()) {
case MCCFIInstruction::OpWindowSave: {
Streamer.EmitIntValue(dwarf::DW_CFA_GNU_window_save, 1);
return;
}
case MCCFIInstruction::OpUndefined: {
unsigned Reg = Instr.getRegister();
if (VerboseAsm) {
Streamer.AddComment("DW_CFA_undefined");
Streamer.AddComment(Twine("Reg ") + Twine(Reg));
}
Streamer.EmitIntValue(dwarf::DW_CFA_undefined, 1);
Streamer.EmitULEB128IntValue(Reg);
return;
}
case MCCFIInstruction::OpAdjustCfaOffset:
case MCCFIInstruction::OpDefCfaOffset: {
const bool IsRelative =
Instr.getOperation() == MCCFIInstruction::OpAdjustCfaOffset;
if (VerboseAsm)
Streamer.AddComment("DW_CFA_def_cfa_offset");
Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_offset, 1);
if (IsRelative)
CFAOffset += Instr.getOffset();
else
// The backends pass in a negative value,
// then createDefCfaOffset () negates it
CFAOffset = Instr.getOffset();
if (VerboseAsm)
Streamer.AddComment(Twine("Offset " + Twine(CFAOffset)));
Streamer.EmitULEB128IntValue(CFAOffset);
return;
}
case MCCFIInstruction::OpDefCfa: {
if (VerboseAsm)
Streamer.AddComment("DW_CFA_def_cfa");
Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa, 1);
if (VerboseAsm)
Streamer.AddComment(Twine("Reg ") + Twine(Instr.getRegister()));
Streamer.EmitULEB128IntValue(Instr.getRegister());
// Backends pass a negative value to createDefCfa () which
// negates it back
CFAOffset = Instr.getOffset();
if (VerboseAsm)
Streamer.AddComment(Twine("Offset " + Twine(CFAOffset)));
Streamer.EmitULEB128IntValue(CFAOffset);
return;
}
case MCCFIInstruction::OpDefCfaRegister: {
if (VerboseAsm)
Streamer.AddComment("DW_CFA_def_cfa_register");
Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_register, 1);
if (VerboseAsm)
Streamer.AddComment(Twine("Reg ") + Twine(Instr.getRegister()));
Streamer.EmitULEB128IntValue(Instr.getRegister());
return;
}
case MCCFIInstruction::OpOffset:
case MCCFIInstruction::OpRelOffset: {
const bool IsRelative =
Instr.getOperation() == MCCFIInstruction::OpRelOffset;
unsigned Reg = Instr.getRegister();
int Offset = Instr.getOffset();
if (IsRelative)
Offset -= CFAOffset;
Offset = Offset / dataAlignmentFactor;
if (Offset < 0) {
if (VerboseAsm) Streamer.AddComment("DW_CFA_offset_extended_sf");
Streamer.EmitIntValue(dwarf::DW_CFA_offset_extended_sf, 1);
if (VerboseAsm) Streamer.AddComment(Twine("Reg ") + Twine(Reg));
Streamer.EmitULEB128IntValue(Reg);
if (VerboseAsm) Streamer.AddComment(Twine("Offset ") + Twine(Offset));
Streamer.EmitSLEB128IntValue(Offset);
} else if (Reg < 64) {
if (VerboseAsm) Streamer.AddComment(Twine("DW_CFA_offset + Reg(") +
Twine(Reg) + ")");
Streamer.EmitIntValue(dwarf::DW_CFA_offset + Reg, 1);
if (VerboseAsm) Streamer.AddComment(Twine("Offset ") + Twine(Offset));
Streamer.EmitULEB128IntValue(Offset);
} else {
if (VerboseAsm) Streamer.AddComment("DW_CFA_offset_extended");
Streamer.EmitIntValue(dwarf::DW_CFA_offset_extended, 1);
if (VerboseAsm) Streamer.AddComment(Twine("Reg ") + Twine(Reg));
Streamer.EmitULEB128IntValue(Reg);
if (VerboseAsm) Streamer.AddComment(Twine("Offset ") + Twine(Offset));
Streamer.EmitULEB128IntValue(Offset);
}
return;
}
case MCCFIInstruction::OpRememberState:
if (VerboseAsm) Streamer.AddComment("DW_CFA_remember_state");
Streamer.EmitIntValue(dwarf::DW_CFA_remember_state, 1);
return;
case MCCFIInstruction::OpRestoreState:
if (VerboseAsm) Streamer.AddComment("DW_CFA_restore_state");
Streamer.EmitIntValue(dwarf::DW_CFA_restore_state, 1);
return;
case MCCFIInstruction::OpSameValue: {
unsigned Reg = Instr.getRegister();
if (VerboseAsm) Streamer.AddComment("DW_CFA_same_value");
Streamer.EmitIntValue(dwarf::DW_CFA_same_value, 1);
if (VerboseAsm) Streamer.AddComment(Twine("Reg ") + Twine(Reg));
Streamer.EmitULEB128IntValue(Reg);
return;
}
case MCCFIInstruction::OpRestore: {
unsigned Reg = Instr.getRegister();
if (VerboseAsm) {
Streamer.AddComment("DW_CFA_restore");
Streamer.AddComment(Twine("Reg ") + Twine(Reg));
}
Streamer.EmitIntValue(dwarf::DW_CFA_restore | Reg, 1);
return;
}
case MCCFIInstruction::OpEscape:
if (VerboseAsm) Streamer.AddComment("Escape bytes");
Streamer.EmitBytes(Instr.getValues());
return;
case MCCFIInstruction::OpRegister:
llvm_unreachable("Unhandled case in switch");
return;
}
llvm_unreachable("Unhandled case in switch");
}
static void EncodeTypes(MCStreamer &Streamer, ArrayRef<MVT> Types) {
Streamer.EmitIntValue(Types.size(), sizeof(uint64_t));
for (MVT Type : Types)
Streamer.EmitIntValue(Type.SimpleTy, sizeof(uint64_t));
}
