#include "LLVMSymbolize.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Config/config.h"
+#include "llvm/DebugInfo/DWARF/DWARFContext.h"
+#include "llvm/DebugInfo/PDB/PDB.h"
+#include "llvm/DebugInfo/PDB/PDBContext.h"
#include "llvm/Object/ELFObjectFile.h"
#include "llvm/Object/MachO.h"
+#include "llvm/Object/SymbolSize.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Compression.h"
#include "llvm/Support/DataExtractor.h"
+#include "llvm/Support/Errc.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include <sstream>
#include <stdlib.h>
+#if defined(_MSC_VER)
+#include <Windows.h>
+#include <DbgHelp.h>
+#endif
+
namespace llvm {
-using std::error_code;
namespace symbolize {
-static bool error(error_code ec) {
+static bool error(std::error_code ec) {
if (!ec)
return false;
errs() << "LLVMSymbolizer: error reading file: " << ec.message() << ".\n";
ModuleInfo::ModuleInfo(ObjectFile *Obj, DIContext *DICtx)
: Module(Obj), DebugInfoContext(DICtx) {
- for (const SymbolRef &Symbol : Module->symbols()) {
- addSymbol(Symbol);
- }
- bool NoSymbolTable = (Module->symbol_begin() == Module->symbol_end());
- if (NoSymbolTable && Module->isELF()) {
- // Fallback to dynamic symbol table, if regular symbol table is stripped.
- std::pair<symbol_iterator, symbol_iterator> IDyn =
- getELFDynamicSymbolIterators(Module);
- for (symbol_iterator si = IDyn.first, se = IDyn.second; si != se; ++si) {
- addSymbol(*si);
+ std::unique_ptr<DataExtractor> OpdExtractor;
+ uint64_t OpdAddress = 0;
+ // Find the .opd (function descriptor) section if any, for big-endian
+ // PowerPC64 ELF.
+ if (Module->getArch() == Triple::ppc64) {
+ for (section_iterator Section : Module->sections()) {
+ StringRef Name;
+ if (!error(Section->getName(Name)) && Name == ".opd") {
+ StringRef Data;
+ if (!error(Section->getContents(Data))) {
+ OpdExtractor.reset(new DataExtractor(Data, Module->isLittleEndian(),
+ Module->getBytesInAddress()));
+ OpdAddress = Section->getAddress();
+ }
+ break;
+ }
}
}
+ std::vector<std::pair<SymbolRef, uint64_t>> Symbols =
+ computeSymbolSizes(*Module);
+ for (auto &P : Symbols)
+ addSymbol(P.first, P.second, OpdExtractor.get(), OpdAddress);
}
-void ModuleInfo::addSymbol(const SymbolRef &Symbol) {
+void ModuleInfo::addSymbol(const SymbolRef &Symbol, uint64_t SymbolSize,
+ DataExtractor *OpdExtractor, uint64_t OpdAddress) {
SymbolRef::Type SymbolType;
if (error(Symbol.getType(SymbolType)))
return;
return;
uint64_t SymbolAddress;
if (error(Symbol.getAddress(SymbolAddress)) ||
- SymbolAddress == UnknownAddressOrSize)
- return;
- uint64_t SymbolSize;
- // Getting symbol size is linear for Mach-O files, so assume that symbol
- // occupies the memory range up to the following symbol.
- if (isa<MachOObjectFile>(Module))
- SymbolSize = 0;
- else if (error(Symbol.getSize(SymbolSize)) ||
- SymbolSize == UnknownAddressOrSize)
+ SymbolAddress == UnknownAddress)
return;
+ if (OpdExtractor) {
+ // For big-endian PowerPC64 ELF, symbols in the .opd section refer to
+ // function descriptors. The first word of the descriptor is a pointer to
+ // the function's code.
+ // For the purposes of symbolization, pretend the symbol's address is that
+ // of the function's code, not the descriptor.
+ uint64_t OpdOffset = SymbolAddress - OpdAddress;
+ uint32_t OpdOffset32 = OpdOffset;
+ if (OpdOffset == OpdOffset32 &&
+ OpdExtractor->isValidOffsetForAddress(OpdOffset32))
+ SymbolAddress = OpdExtractor->getAddress(&OpdOffset32);
+ }
StringRef SymbolName;
if (error(Symbol.getName(SymbolName)))
return;
SymbolName = SymbolName.drop_front();
// FIXME: If a function has alias, there are two entries in symbol table
// with same address size. Make sure we choose the correct one.
- SymbolMapTy &M = SymbolType == SymbolRef::ST_Function ? Functions : Objects;
+ auto &M = SymbolType == SymbolRef::ST_Function ? Functions : Objects;
SymbolDesc SD = { SymbolAddress, SymbolSize };
M.insert(std::make_pair(SD, SymbolName));
}
bool ModuleInfo::getNameFromSymbolTable(SymbolRef::Type Type, uint64_t Address,
std::string &Name, uint64_t &Addr,
uint64_t &Size) const {
- const SymbolMapTy &M = Type == SymbolRef::ST_Function ? Functions : Objects;
- if (M.empty())
+ const auto &SymbolMap = Type == SymbolRef::ST_Function ? Functions : Objects;
+ if (SymbolMap.empty())
return false;
SymbolDesc SD = { Address, Address };
- SymbolMapTy::const_iterator it = M.upper_bound(SD);
- if (it == M.begin())
+ auto SymbolIterator = SymbolMap.upper_bound(SD);
+ if (SymbolIterator == SymbolMap.begin())
return false;
- --it;
- if (it->first.Size != 0 && it->first.Addr + it->first.Size <= Address)
+ --SymbolIterator;
+ if (SymbolIterator->first.Size != 0 &&
+ SymbolIterator->first.Addr + SymbolIterator->first.Size <= Address)
return false;
- Name = it->second.str();
- Addr = it->first.Addr;
- Size = it->first.Size;
+ Name = SymbolIterator->second.str();
+ Addr = SymbolIterator->first.Addr;
+ Size = SymbolIterator->first.Size;
return true;
}
DIInliningInfo ModuleInfo::symbolizeInlinedCode(
uint64_t ModuleOffset, const LLVMSymbolizer::Options &Opts) const {
DIInliningInfo InlinedContext;
+
if (DebugInfoContext) {
InlinedContext = DebugInfoContext->getInliningInfoForAddress(
ModuleOffset, getDILineInfoSpecifier(Opts));
void LLVMSymbolizer::flush() {
DeleteContainerSeconds(Modules);
- BinaryForPath.clear();
+ ObjectPairForPathArch.clear();
ObjectFileForArch.clear();
}
-static std::string getDarwinDWARFResourceForPath(const std::string &Path) {
- StringRef Basename = sys::path::filename(Path);
- const std::string &DSymDirectory = Path + ".dSYM";
- SmallString<16> ResourceName = StringRef(DSymDirectory);
+// For Path="/path/to/foo" and Basename="foo" assume that debug info is in
+// /path/to/foo.dSYM/Contents/Resources/DWARF/foo.
+// For Path="/path/to/bar.dSYM" and Basename="foo" assume that debug info is in
+// /path/to/bar.dSYM/Contents/Resources/DWARF/foo.
+static
+std::string getDarwinDWARFResourceForPath(
+ const std::string &Path, const std::string &Basename) {
+ SmallString<16> ResourceName = StringRef(Path);
+ if (sys::path::extension(Path) != ".dSYM") {
+ ResourceName += ".dSYM";
+ }
sys::path::append(ResourceName, "Contents", "Resources", "DWARF");
sys::path::append(ResourceName, Basename);
return ResourceName.str();
}
static bool checkFileCRC(StringRef Path, uint32_t CRCHash) {
- std::unique_ptr<MemoryBuffer> MB;
- if (MemoryBuffer::getFileOrSTDIN(Path, MB))
+ ErrorOr<std::unique_ptr<MemoryBuffer>> MB =
+ MemoryBuffer::getFileOrSTDIN(Path);
+ if (!MB)
return false;
- return !zlib::isAvailable() || CRCHash == zlib::crc32(MB->getBuffer());
+ return !zlib::isAvailable() || CRCHash == zlib::crc32(MB.get()->getBuffer());
}
static bool findDebugBinary(const std::string &OrigPath,
return false;
}
-static bool getGNUDebuglinkContents(const Binary *Bin, std::string &DebugName,
+static bool getGNUDebuglinkContents(const ObjectFile *Obj, std::string &DebugName,
uint32_t &CRCHash) {
- const ObjectFile *Obj = dyn_cast<ObjectFile>(Bin);
if (!Obj)
return false;
for (const SectionRef &Section : Obj->sections()) {
return false;
}
-LLVMSymbolizer::BinaryPair
-LLVMSymbolizer::getOrCreateBinary(const std::string &Path) {
- BinaryMapTy::iterator I = BinaryForPath.find(Path);
- if (I != BinaryForPath.end())
+static
+bool darwinDsymMatchesBinary(const MachOObjectFile *DbgObj,
+ const MachOObjectFile *Obj) {
+ ArrayRef<uint8_t> dbg_uuid = DbgObj->getUuid();
+ ArrayRef<uint8_t> bin_uuid = Obj->getUuid();
+ if (dbg_uuid.empty() || bin_uuid.empty())
+ return false;
+ return !memcmp(dbg_uuid.data(), bin_uuid.data(), dbg_uuid.size());
+}
+
+ObjectFile *LLVMSymbolizer::lookUpDsymFile(const std::string &ExePath,
+ const MachOObjectFile *MachExeObj, const std::string &ArchName) {
+ // On Darwin we may find DWARF in separate object file in
+ // resource directory.
+ std::vector<std::string> DsymPaths;
+ StringRef Filename = sys::path::filename(ExePath);
+ DsymPaths.push_back(getDarwinDWARFResourceForPath(ExePath, Filename));
+ for (const auto &Path : Opts.DsymHints) {
+ DsymPaths.push_back(getDarwinDWARFResourceForPath(Path, Filename));
+ }
+ for (const auto &path : DsymPaths) {
+ ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(path);
+ std::error_code EC = BinaryOrErr.getError();
+ if (EC != errc::no_such_file_or_directory && !error(EC)) {
+ OwningBinary<Binary> B = std::move(BinaryOrErr.get());
+ ObjectFile *DbgObj =
+ getObjectFileFromBinary(B.getBinary(), ArchName);
+ const MachOObjectFile *MachDbgObj =
+ dyn_cast<const MachOObjectFile>(DbgObj);
+ if (!MachDbgObj) continue;
+ if (darwinDsymMatchesBinary(MachDbgObj, MachExeObj)) {
+ addOwningBinary(std::move(B));
+ return DbgObj;
+ }
+ }
+ }
+ return nullptr;
+}
+
+LLVMSymbolizer::ObjectPair
+LLVMSymbolizer::getOrCreateObjects(const std::string &Path,
+ const std::string &ArchName) {
+ const auto &I = ObjectPairForPathArch.find(std::make_pair(Path, ArchName));
+ if (I != ObjectPairForPathArch.end())
return I->second;
- Binary *Bin = nullptr;
- Binary *DbgBin = nullptr;
- ErrorOr<Binary *> BinaryOrErr = createBinary(Path);
+ ObjectFile *Obj = nullptr;
+ ObjectFile *DbgObj = nullptr;
+ ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(Path);
if (!error(BinaryOrErr.getError())) {
- std::unique_ptr<Binary> ParsedBinary(BinaryOrErr.get());
- // Check if it's a universal binary.
- Bin = ParsedBinary.get();
- ParsedBinariesAndObjects.push_back(std::move(ParsedBinary));
- if (Bin->isMachO() || Bin->isMachOUniversalBinary()) {
- // On Darwin we may find DWARF in separate object file in
- // resource directory.
- const std::string &ResourcePath =
- getDarwinDWARFResourceForPath(Path);
- BinaryOrErr = createBinary(ResourcePath);
- error_code EC = BinaryOrErr.getError();
- if (EC != std::errc::no_such_file_or_directory && !error(EC)) {
- DbgBin = BinaryOrErr.get();
- ParsedBinariesAndObjects.push_back(std::unique_ptr<Binary>(DbgBin));
- }
+ OwningBinary<Binary> &B = BinaryOrErr.get();
+ Obj = getObjectFileFromBinary(B.getBinary(), ArchName);
+ if (!Obj) {
+ ObjectPair Res = std::make_pair(nullptr, nullptr);
+ ObjectPairForPathArch[std::make_pair(Path, ArchName)] = Res;
+ return Res;
}
+ addOwningBinary(std::move(B));
+ if (auto MachObj = dyn_cast<const MachOObjectFile>(Obj))
+ DbgObj = lookUpDsymFile(Path, MachObj, ArchName);
// Try to locate the debug binary using .gnu_debuglink section.
- if (!DbgBin) {
+ if (!DbgObj) {
std::string DebuglinkName;
uint32_t CRCHash;
std::string DebugBinaryPath;
- if (getGNUDebuglinkContents(Bin, DebuglinkName, CRCHash) &&
+ if (getGNUDebuglinkContents(Obj, DebuglinkName, CRCHash) &&
findDebugBinary(Path, DebuglinkName, CRCHash, DebugBinaryPath)) {
BinaryOrErr = createBinary(DebugBinaryPath);
if (!error(BinaryOrErr.getError())) {
- DbgBin = BinaryOrErr.get();
- ParsedBinariesAndObjects.push_back(std::unique_ptr<Binary>(DbgBin));
+ OwningBinary<Binary> B = std::move(BinaryOrErr.get());
+ DbgObj = getObjectFileFromBinary(B.getBinary(), ArchName);
+ addOwningBinary(std::move(B));
}
}
}
}
- if (!DbgBin)
- DbgBin = Bin;
- BinaryPair Res = std::make_pair(Bin, DbgBin);
- BinaryForPath[Path] = Res;
+ if (!DbgObj)
+ DbgObj = Obj;
+ ObjectPair Res = std::make_pair(Obj, DbgObj);
+ ObjectPairForPathArch[std::make_pair(Path, ArchName)] = Res;
return Res;
}
ObjectFile *
-LLVMSymbolizer::getObjectFileFromBinary(Binary *Bin, const std::string &ArchName) {
+LLVMSymbolizer::getObjectFileFromBinary(Binary *Bin,
+ const std::string &ArchName) {
if (!Bin)
return nullptr;
ObjectFile *Res = nullptr;
if (MachOUniversalBinary *UB = dyn_cast<MachOUniversalBinary>(Bin)) {
- ObjectFileForArchMapTy::iterator I = ObjectFileForArch.find(
+ const auto &I = ObjectFileForArch.find(
std::make_pair(UB, ArchName));
if (I != ObjectFileForArch.end())
return I->second;
- std::unique_ptr<ObjectFile> ParsedObj;
- if (!UB->getObjectForArch(Triple(ArchName).getArch(), ParsedObj)) {
- Res = ParsedObj.get();
- ParsedBinariesAndObjects.push_back(std::move(ParsedObj));
+ ErrorOr<std::unique_ptr<ObjectFile>> ParsedObj =
+ UB->getObjectForArch(ArchName);
+ if (ParsedObj) {
+ Res = ParsedObj.get().get();
+ ParsedBinariesAndObjects.push_back(std::move(ParsedObj.get()));
}
ObjectFileForArch[std::make_pair(UB, ArchName)] = Res;
} else if (Bin->isObject()) {
ModuleInfo *
LLVMSymbolizer::getOrCreateModuleInfo(const std::string &ModuleName) {
- ModuleMapTy::iterator I = Modules.find(ModuleName);
+ const auto &I = Modules.find(ModuleName);
if (I != Modules.end())
return I->second;
std::string BinaryName = ModuleName;
ArchName = ArchStr;
}
}
- BinaryPair Binaries = getOrCreateBinary(BinaryName);
- ObjectFile *Obj = getObjectFileFromBinary(Binaries.first, ArchName);
- ObjectFile *DbgObj = getObjectFileFromBinary(Binaries.second, ArchName);
+ ObjectPair Objects = getOrCreateObjects(BinaryName, ArchName);
- if (!Obj) {
+ if (!Objects.first) {
// Failed to find valid object file.
Modules.insert(make_pair(ModuleName, (ModuleInfo *)nullptr));
return nullptr;
}
- DIContext *Context = DIContext::getDWARFContext(DbgObj);
+ DIContext *Context = nullptr;
+ if (auto CoffObject = dyn_cast<COFFObjectFile>(Objects.first)) {
+ // If this is a COFF object, assume it contains PDB debug information. If
+ // we don't find any we will fall back to the DWARF case.
+ std::unique_ptr<IPDBSession> Session;
+ PDB_ErrorCode Error = loadDataForEXE(PDB_ReaderType::DIA,
+ Objects.first->getFileName(), Session);
+ if (Error == PDB_ErrorCode::Success) {
+ Context = new PDBContext(*CoffObject, std::move(Session),
+ Opts.RelativeAddresses);
+ }
+ }
+ if (!Context)
+ Context = new DWARFContextInMemory(*Objects.second);
assert(Context);
- ModuleInfo *Info = new ModuleInfo(Obj, Context);
+ ModuleInfo *Info = new ModuleInfo(Objects.first, Context);
Modules.insert(make_pair(ModuleName, Info));
return Info;
}
free(DemangledName);
return Result;
#else
- return Name;
+ char DemangledName[1024] = {0};
+ DWORD result = ::UnDecorateSymbolName(
+ Name.c_str(), DemangledName, 1023,
+ UNDNAME_NO_ACCESS_SPECIFIERS | // Strip public, private, protected
+ UNDNAME_NO_ALLOCATION_LANGUAGE | // Strip __thiscall, __stdcall, etc
+ UNDNAME_NO_THROW_SIGNATURES | // Strip throw() specifications
+ UNDNAME_NO_MEMBER_TYPE | // Strip virtual, static, etc specifiers
+ UNDNAME_NO_MS_KEYWORDS | // Strip all MS extension keywords
+ UNDNAME_NO_FUNCTION_RETURNS); // Strip function return types
+
+ return (result == 0) ? Name : std::string(DemangledName);
#endif
}
projects / oota-llvm.git / blobdiff