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#ifndef LLVM_DWP_DWP_H
#define LLVM_DWP_DWP_H
#include "DWPStringPool.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/DebugInfo/DWARF/DWARFContext.h"
#include "llvm/DebugInfo/DWARF/DWARFUnitIndex.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/Error.h"
#include <deque>
#include <vector>
namespace llvm {
enum OnCuIndexOverflow {
HardStop,
SoftStop,
Continue,
};
struct UnitIndexEntry {
DWARFUnitIndex::Entry::SectionContribution Contributions[8];
std::string Name;
std::string DWOName;
StringRef DWPName;
};
// Holds data for Skeleton, Split Compilation, and Type Unit Headers (only in
// v5) as defined in Dwarf 5 specification, 7.5.1.2, 7.5.1.3 and Dwarf 4
// specification 7.5.1.1.
struct InfoSectionUnitHeader {
// unit_length field. Note that the type is uint64_t even in 32-bit dwarf.
uint64_t Length = 0;
// version field.
uint16_t Version = 0;
// unit_type field. Initialized only if Version >= 5.
uint8_t UnitType = 0;
// address_size field.
uint8_t AddrSize = 0;
// debug_abbrev_offset field. Note that the type is uint64_t even in 32-bit
// dwarf. It is assumed to be 0.
uint64_t DebugAbbrevOffset = 0;
// dwo_id field. This resides in the header only if Version >= 5.
// In earlier versions, it is read from DW_AT_GNU_dwo_id.
std::optional<uint64_t> Signature;
// Derived from the length of Length field.
dwarf::DwarfFormat Format = dwarf::DwarfFormat::DWARF32;
// The size of the Header in bytes. This is derived while parsing the header,
// and is stored as a convenience.
uint8_t HeaderSize = 0;
};
struct CompileUnitIdentifiers {
uint64_t Signature = 0;
const char *Name = "";
const char *DWOName = "";
};
Error write(MCStreamer &Out, ArrayRef<std::string> Inputs,
OnCuIndexOverflow OverflowOptValue);
unsigned getContributionIndex(DWARFSectionKind Kind, uint32_t IndexVersion);
Error handleSection(
const StringMap<std::pair<MCSection *, DWARFSectionKind>> &KnownSections,
const MCSection *StrSection, const MCSection *StrOffsetSection,
const MCSection *TypesSection, const MCSection *CUIndexSection,
const MCSection *TUIndexSection, const MCSection *InfoSection,
const object::SectionRef &Section, MCStreamer &Out,
std::deque<SmallString<32>> &UncompressedSections,
uint32_t (&ContributionOffsets)[8], UnitIndexEntry &CurEntry,
StringRef &CurStrSection, StringRef &CurStrOffsetSection,
std::vector<StringRef> &CurTypesSection,
std::vector<StringRef> &CurInfoSection, StringRef &AbbrevSection,
StringRef &CurCUIndexSection, StringRef &CurTUIndexSection,
std::vector<std::pair<DWARFSectionKind, uint32_t>> &SectionLength);
Expected<InfoSectionUnitHeader> parseInfoSectionUnitHeader(StringRef Info);
void writeStringsAndOffsets(MCStreamer &Out, DWPStringPool &Strings,
MCSection *StrOffsetSection,
StringRef CurStrSection,
StringRef CurStrOffsetSection, uint16_t Version);
Error buildDuplicateError(const std::pair<uint64_t, UnitIndexEntry> &PrevE,
const CompileUnitIdentifiers &ID, StringRef DWPName);
void writeIndex(MCStreamer &Out, MCSection *Section,
ArrayRef<unsigned> ContributionOffsets,
const MapVector<uint64_t, UnitIndexEntry> &IndexEntries,
uint32_t IndexVersion);
} // namespace llvm
#endif // LLVM_DWP_DWP_H
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