DebugInfoSupport.cpp Source File (original) (raw)

17#define DEBUG_TYPE "orc"

19using namespace llvm;

23namespace {

25#define HANDLE_DWARF_SECTION(ENUM_NAME, ELF_NAME, CMDLINE_NAME, OPTION) \

26 StringRef(ELF_NAME),

27#include "llvm/BinaryFormat/Dwarf.def"

28#undef HANDLE_DWARF_SECTION

29};

35 for (auto Sym : Sec.symbols()) {

36 auto [It, Inserted] = Preserved.try_emplace(&Sym->getBlock());

37 if (Inserted || Sym->isLive())

38 It->second = Sym;

39 }

41 auto &PSym = Preserved[Block];

42 if (!PSym)

43 PSym = &G.addAnonymousSymbol(*Block, 0, 0, false, true);

44 else if (!PSym->isLive())

45 PSym->setLive(true);

46 }

47}

53 return LHS->getAddress() < RHS->getAddress();

54 });

59 for (auto *Block : SecBlocks) {

61 SecData.resize(SecData.size() + Block->getSize(), 0);

62 else

64 }

65 return SecData;

66}

68static void dumpDWARFContext(DWARFContext &DC) {

71 options.DumpType &= ~(1 << DIDT_ID_DebugFrame);

73}

75}

78 if (.getTargetTriple().isOSBinFormatELF()) {

80 "preserveDebugSections only supports ELF LinkGraphs!",

82 }

83 for (auto &Sec : G.sections()) {

84 if (DWARFSectionNames.count(Sec.getName())) {

85 LLVM_DEBUG(dbgs() << "Preserving DWARF section " << Sec.getName()

86 << "\n");

87 preserveDWARFSection(G, Sec);

88 }

89 }

91}

96 if (.getTargetTriple().isOSBinFormatELF()) {

98 "createDWARFContext only supports ELF LinkGraphs!",

100 }

102 for (auto &Sec : G.sections()) {

103 if (DWARFSectionNames.count(Sec.getName())) {

104 auto SecData = getSectionData(Sec);

105 auto Name = Sec.getName();

106

107 Name.consume_front(".");

108 LLVM_DEBUG(dbgs() << "Creating DWARFContext section " << Name

109 << " with size " << SecData.size() << "\n");

110 DWARFSectionData[Name] =

111 std::make_unique(std::move(SecData));

112 }

113 }

114 auto Ctx =

117 dumpDWARFContext(*Ctx);

118 return std::make_pair(std::move(Ctx), std::move(DWARFSectionData));

119}

DWARFContext This data structure is the top level entity that deals with dwarf debug information pars...

void dump(raw_ostream &OS, DIDumpOptions DumpOpts, std::array< std::optional< uint64_t >, DIDT_ID_Count > DumpOffsets)

Dump a textual representation to OS.

static std::unique_ptr< DWARFContext > create(const object::ObjectFile &Obj, ProcessDebugRelocations RelocAction=ProcessDebugRelocations::Process, const LoadedObjectInfo *L=nullptr, std::string DWPName="", std::function< void(Error)> RecoverableErrorHandler=WithColor::defaultErrorHandler, std::function< void(Error)> WarningHandler=WithColor::defaultWarningHandler, bool ThreadSafe=false)

std::pair< iterator, bool > try_emplace(KeyT &&Key, Ts &&...Args)

Implements a dense probed hash-table based set.

Lightweight error class with error context and mandatory checking.

static ErrorSuccess success()

Create a success value.

Tagged union holding either a T or a Error.

This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.

StringMap - This is an unconventional map that is specialized for handling keys that are "strings",...

An Addressable with content and edges.

ArrayRef< char > getContent() const

Get the content for this block. Block must not be a zero-fill block.

bool isZeroFill() const

Returns true if this is a zero-fill block.

size_t getSize() const

Returns the size of this defined addressable.

Represents an object file section.

iterator_range< symbol_iterator > symbols()

Returns an iterator over the symbols defined in this section.

iterator_range< block_iterator > blocks()

Returns an iterator over the blocks defined in this section.

LLVM_ABI Error preserveDebugSections(jitlink::LinkGraph &G)

Definition DebugInfoSupport.cpp:77

LLVM_ABI Expected< std::pair< std::unique_ptr< DWARFContext >, StringMap< std::unique_ptr< MemoryBuffer > > > > createDWARFContext(jitlink::LinkGraph &G)

Definition DebugInfoSupport.cpp:95

This is an optimization pass for GlobalISel generic memory operations.

LLVM_ABI std::error_code inconvertibleErrorCode()

The value returned by this function can be returned from convertToErrorCode for Error values where no...

LLVM_ABI raw_ostream & dbgs()

dbgs() - This returns a reference to a raw_ostream for debugging messages.

Error make_error(ArgTs &&... Args)

Make a Error instance representing failure using the given error info type.

Container for dump options that control which debug information will be dumped.