#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/Support/Casting.h"
#include <sstream>
#include <stdlib.h>
+#if defined(_MSC_VER)
+#include <Windows.h>
+#include <DbgHelp.h>
+#endif
+
namespace llvm {
namespace symbolize {
ModuleInfo::ModuleInfo(ObjectFile *Obj, DIContext *DICtx)
: Module(Obj), DebugInfoContext(DICtx) {
+ 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;
+ }
+ }
+ }
for (const SymbolRef &Symbol : Module->symbols()) {
- addSymbol(Symbol);
+ addSymbol(Symbol, OpdExtractor.get(), OpdAddress);
}
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);
+ auto IDyn = cast<ELFObjectFileBase>(Module)->getDynamicSymbolIterators();
+ for (SymbolRef Sym : IDyn) {
+ addSymbol(Sym, OpdExtractor.get(), OpdAddress);
}
}
}
-void ModuleInfo::addSymbol(const SymbolRef &Symbol) {
+void ModuleInfo::addSymbol(const SymbolRef &Symbol, 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)
+ 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);
+ }
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))
+ // Onyl ELF has a size for every symbol so assume that symbol occupies the
+ // memory range up to the following symbol.
+ if (auto *E = dyn_cast<ELFObjectFileBase>(Module))
+ SymbolSize = E->getSymbolSize(Symbol);
+ else
SymbolSize = 0;
- else if (error(Symbol.getSize(SymbolSize)) ||
- SymbolSize == UnknownAddressOrSize)
- return;
StringRef SymbolName;
if (error(Symbol.getName(SymbolName)))
return;
DIInliningInfo ModuleInfo::symbolizeInlinedCode(
uint64_t ModuleOffset, const LLVMSymbolizer::Options &Opts) const {
DIInliningInfo InlinedContext;
+
if (DebugInfoContext) {
InlinedContext = DebugInfoContext->getInliningInfoForAddress(
ModuleOffset, getDILineInfoSpecifier(Opts));
if (EC != errc::no_such_file_or_directory && !error(EC)) {
OwningBinary<Binary> B = std::move(BinaryOrErr.get());
ObjectFile *DbgObj =
- getObjectFileFromBinary(B.getBinary().get(), ArchName);
+ getObjectFileFromBinary(B.getBinary(), ArchName);
const MachOObjectFile *MachDbgObj =
dyn_cast<const MachOObjectFile>(DbgObj);
if (!MachDbgObj) continue;
ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(Path);
if (!error(BinaryOrErr.getError())) {
OwningBinary<Binary> &B = BinaryOrErr.get();
- Obj = getObjectFileFromBinary(B.getBinary().get(), ArchName);
+ Obj = getObjectFileFromBinary(B.getBinary(), ArchName);
if (!Obj) {
ObjectPair Res = std::make_pair(nullptr, nullptr);
ObjectPairForPathArch[std::make_pair(Path, ArchName)] = Res;
BinaryOrErr = createBinary(DebugBinaryPath);
if (!error(BinaryOrErr.getError())) {
OwningBinary<Binary> B = std::move(BinaryOrErr.get());
- DbgObj = getObjectFileFromBinary(B.getBinary().get(), ArchName);
+ DbgObj = getObjectFileFromBinary(B.getBinary(), ArchName);
addOwningBinary(std::move(B));
}
}
if (I != ObjectFileForArch.end())
return I->second;
ErrorOr<std::unique_ptr<ObjectFile>> ParsedObj =
- UB->getObjectForArch(Triple(ArchName).getArch());
+ UB->getObjectForArch(ArchName);
if (ParsedObj) {
Res = ParsedObj.get().get();
ParsedBinariesAndObjects.push_back(std::move(ParsedObj.get()));
Modules.insert(make_pair(ModuleName, (ModuleInfo *)nullptr));
return nullptr;
}
- DIContext *Context = DIContext::getDWARFContext(*Objects.second);
+ 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(Objects.first, Context);
Modules.insert(make_pair(ModuleName, 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