diff options
Diffstat (limited to 'lib/DebugInfo')
-rw-r--r-- | lib/DebugInfo/DWARFContext.cpp | 16 | ||||
-rw-r--r-- | lib/DebugInfo/DWARFContext.h | 7 | ||||
-rw-r--r-- | lib/DebugInfo/DWARFDebugLoc.cpp | 52 | ||||
-rw-r--r-- | lib/DebugInfo/DWARFDebugLoc.h | 21 |
4 files changed, 96 insertions, 0 deletions
diff --git a/lib/DebugInfo/DWARFContext.cpp b/lib/DebugInfo/DWARFContext.cpp index 0afe6ef6e1..60c5f6ab56 100644 --- a/lib/DebugInfo/DWARFContext.cpp +++ b/lib/DebugInfo/DWARFContext.cpp @@ -96,6 +96,11 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) { getDebugLoc()->dump(OS); } + if (DumpType == DIDT_All || DumpType == DIDT_LocDwo) { + OS << "\n.debug_loc.dwo contents:\n"; + getDebugLocDWO()->dump(OS); + } + if (DumpType == DIDT_All || DumpType == DIDT_Frames) { OS << "\n.debug_frame contents:\n"; getDebugFrame()->dump(OS); @@ -237,6 +242,16 @@ const DWARFDebugLoc *DWARFContext::getDebugLoc() { return Loc.get(); } +const DWARFDebugLocDWO *DWARFContext::getDebugLocDWO() { + if (LocDWO) + return LocDWO.get(); + + DataExtractor LocData(getLocDWOSection().Data, isLittleEndian(), 0); + LocDWO.reset(new DWARFDebugLocDWO()); + LocDWO->parse(LocData); + return LocDWO.get(); +} + const DWARFDebugAranges *DWARFContext::getDebugAranges() { if (Aranges) return Aranges.get(); @@ -648,6 +663,7 @@ DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) .Case("debug_gnu_pubtypes", &GnuPubTypesSection) .Case("debug_info.dwo", &InfoDWOSection.Data) .Case("debug_abbrev.dwo", &AbbrevDWOSection) + .Case("debug_loc.dwo", &LocDWOSection.Data) .Case("debug_line.dwo", &LineDWOSection.Data) .Case("debug_str.dwo", &StringDWOSection) .Case("debug_str_offsets.dwo", &StringOffsetDWOSection) diff --git a/lib/DebugInfo/DWARFContext.h b/lib/DebugInfo/DWARFContext.h index a3bae79273..ad6841ae9e 100644 --- a/lib/DebugInfo/DWARFContext.h +++ b/lib/DebugInfo/DWARFContext.h @@ -42,6 +42,7 @@ class DWARFContext : public DIContext { CUVector DWOCUs; TUVector DWOTUs; std::unique_ptr<DWARFDebugAbbrev> AbbrevDWO; + std::unique_ptr<DWARFDebugLocDWO> LocDWO; DWARFContext(DWARFContext &) LLVM_DELETED_FUNCTION; DWARFContext &operator=(DWARFContext &) LLVM_DELETED_FUNCTION; @@ -148,6 +149,9 @@ public: /// Get a pointer to the parsed dwo abbreviations object. const DWARFDebugAbbrev *getDebugAbbrevDWO(); + /// Get a pointer to the parsed DebugLoc object. + const DWARFDebugLocDWO *getDebugLocDWO(); + /// Get a pointer to the parsed DebugAranges object. const DWARFDebugAranges *getDebugAranges(); @@ -173,6 +177,7 @@ public: virtual const TypeSectionMap &getTypesSections() = 0; virtual StringRef getAbbrevSection() = 0; virtual const Section &getLocSection() = 0; + virtual const Section &getLocDWOSection() = 0; virtual StringRef getARangeSection() = 0; virtual StringRef getDebugFrameSection() = 0; virtual const Section &getLineSection() = 0; @@ -216,6 +221,7 @@ class DWARFContextInMemory : public DWARFContext { TypeSectionMap TypesSections; StringRef AbbrevSection; Section LocSection; + Section LocDWOSection; StringRef ARangeSection; StringRef DebugFrameSection; Section LineSection; @@ -246,6 +252,7 @@ public: const TypeSectionMap &getTypesSections() override { return TypesSections; } StringRef getAbbrevSection() override { return AbbrevSection; } const Section &getLocSection() override { return LocSection; } + const Section &getLocDWOSection() override { return LocDWOSection; } StringRef getARangeSection() override { return ARangeSection; } StringRef getDebugFrameSection() override { return DebugFrameSection; } const Section &getLineSection() override { return LineSection; } diff --git a/lib/DebugInfo/DWARFDebugLoc.cpp b/lib/DebugInfo/DWARFDebugLoc.cpp index 5f0ff0240d..e4aa5dcce2 100644 --- a/lib/DebugInfo/DWARFDebugLoc.cpp +++ b/lib/DebugInfo/DWARFDebugLoc.cpp @@ -11,6 +11,7 @@ #include "llvm/Support/Compiler.h" #include "llvm/Support/Format.h" #include "llvm/Support/raw_ostream.h" +#include "llvm/Support/Dwarf.h" using namespace llvm; @@ -74,3 +75,54 @@ void DWARFDebugLoc::parse(DataExtractor data, unsigned AddressSize) { if (data.isValidOffset(Offset)) llvm::errs() << "error: failed to consume entire .debug_loc section\n"; } + +void DWARFDebugLocDWO::parse(DataExtractor data) { + uint32_t Offset = 0; + while (data.isValidOffset(Offset)) { + Locations.resize(Locations.size() + 1); + LocationList &Loc = Locations.back(); + Loc.Offset = Offset; + dwarf::LocationListEntry Kind; + while ((Kind = static_cast<dwarf::LocationListEntry>( + data.getU8(&Offset))) != dwarf::DW_LLE_end_of_list_entry) { + + if (Kind != dwarf::DW_LLE_start_length_entry) { + llvm::errs() << "error: dumping support for LLE of kind " << (int)Kind + << " not implemented\n"; + return; + } + + Entry E; + + E.Start = data.getULEB128(&Offset); + E.Length = data.getU32(&Offset); + + unsigned Bytes = data.getU16(&Offset); + // A single location description describing the location of the object... + StringRef str = data.getData().substr(Offset, Bytes); + Offset += Bytes; + E.Loc.resize(str.size()); + std::copy(str.begin(), str.end(), E.Loc.begin()); + + Loc.Entries.push_back(std::move(E)); + } + } +} + +void DWARFDebugLocDWO::dump(raw_ostream &OS) const { + for (const LocationList &L : Locations) { + OS << format("0x%8.8x: ", L.Offset); + const unsigned Indent = 12; + for (const Entry &E : L.Entries) { + if (&E != L.Entries.begin()) + OS.indent(Indent); + OS << "Beginning address index: " << E.Start << '\n'; + OS.indent(Indent) << " Length: " << E.Length << '\n'; + OS.indent(Indent) << " Location description: "; + for (unsigned char Loc : E.Loc) + OS << format("%2.2x ", Loc); + OS << "\n\n"; + } + } +} + diff --git a/lib/DebugInfo/DWARFDebugLoc.h b/lib/DebugInfo/DWARFDebugLoc.h index d31aaaa127..663acbb42f 100644 --- a/lib/DebugInfo/DWARFDebugLoc.h +++ b/lib/DebugInfo/DWARFDebugLoc.h @@ -55,6 +55,27 @@ public: /// specified address size to interpret the address ranges. void parse(DataExtractor data, unsigned AddressSize); }; + +class DWARFDebugLocDWO { + struct Entry { + uint64_t Start; + uint32_t Length; + SmallVector<unsigned char, 4> Loc; + }; + + struct LocationList { + unsigned Offset; + SmallVector<Entry, 2> Entries; + }; + + typedef SmallVector<LocationList, 4> LocationLists; + + LocationLists Locations; + +public: + void parse(DataExtractor data); + void dump(raw_ostream &OS) const; +}; } #endif |