1 //===- GsymReader.cpp -----------------------------------------------------===//
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
27     : MemBuffer(std::move(Buffer)), Endian(llvm::endianness::native) {}  in GsymReader()
62   BinaryStreamReader FileData(MemBuffer->getBuffer(), llvm::endianness::native);  in parse()
70   const auto HostByteOrder = llvm::endianness::native;  in parse()
71   switch (Hdr->Magic) {  in parse()
73       Endian = HostByteOrder;  in parse()
76       // This is a GSYM file, but not native endianness.  in parse()
77       Endian = sys::IsBigEndianHost ? llvm::endianness::little  in parse()
89     DataExtractor Data(MemBuffer->getBuffer(), DataIsLittleEndian, 4);  in parse()
91       Swap->Hdr = ExpectedHdr.get();  in parse()
94     Hdr = &Swap->Hdr;  in parse()
100   if (Error Err = Hdr->checkForError())  in parse()
104     // This is the native endianness case that is most common and optimized for  in parse()
105     // efficient lookups. Here we just grab pointers to the native data and  in parse()
109     if (FileData.padToAlignment(Hdr->AddrOffSize) ||  in parse()
111                            Hdr->NumAddresses * Hdr->AddrOffSize))  in parse()
117         FileData.readArray(AddrInfoOffsets, Hdr->NumAddresses))  in parse()
128     FileData.setOffset(Hdr->StrtabOffset);  in parse()
129     if (FileData.readFixedString(StrTab.Data, Hdr->StrtabSize))  in parse()
133   // This is the non native endianness case that is not common and not  in parse()
137   DataExtractor Data(MemBuffer->getBuffer(), DataIsLittleEndian, 4);  in parse()
140   uint64_t Offset = alignTo(sizeof(Header), Hdr->AddrOffSize);  in parse()
141   Swap->AddrOffsets.resize(Hdr->NumAddresses * Hdr->AddrOffSize);  in parse()
142   switch (Hdr->AddrOffSize) {  in parse()
144       if (!Data.getU8(&Offset, Swap->AddrOffsets.data(), Hdr->NumAddresses))  in parse()
150                         reinterpret_cast<uint16_t *>(Swap->AddrOffsets.data()),  in parse()
151                         Hdr->NumAddresses))  in parse()
157                         reinterpret_cast<uint32_t *>(Swap->AddrOffsets.data()),  in parse()
158                         Hdr->NumAddresses))  in parse()
164                         reinterpret_cast<uint64_t *>(Swap->AddrOffsets.data()),  in parse()
165                         Hdr->NumAddresses))  in parse()
169     AddrOffsets = ArrayRef<uint8_t>(Swap->AddrOffsets);  in parse()
173     Swap->AddrInfoOffsets.resize(Hdr->NumAddresses);  in parse()
174     if (Data.getU32(&Offset, Swap->AddrInfoOffsets.data(), Hdr->NumAddresses))  in parse()
175       AddrInfoOffsets = ArrayRef<uint32_t>(Swap->AddrInfoOffsets);  in parse()
182       Swap->Files.resize(NumFiles);  in parse()
183       if (Data.getU32(&Offset, &Swap->Files[0].Dir, NumFiles*2))  in parse()
184         Files = ArrayRef<FileEntry>(Swap->Files);  in parse()
190     StrTab.Data = MemBuffer->getBuffer().substr(Hdr->StrtabOffset,  in parse()
191                                                 Hdr->StrtabSize);  in parse()
209   switch (Hdr->AddrOffSize) {  in getAddress()
227   if (Addr >= Hdr->BaseAddress) {  in getAddressIndex()
228     const uint64_t AddrOffset = Addr - Hdr->BaseAddress;  in getAddressIndex()
230     switch (Hdr->AddrOffSize) {  in getAddressIndex()
246                                Hdr->AddrOffSize);  in getAddressIndex()
290     uint32_t FuncSize = ExpextedData->getU32(&Offset);  in getFunctionInfoDataForAddress()
306   assert((Endian == endianness::big || Endian == endianness::little) &&  in getFunctionInfoDataAtIndex()
307          "Endian must be either big or little");  in getFunctionInfoDataAtIndex()
308   StringRef Bytes = MemBuffer->getBuffer().substr(AddrInfoOffset);  in getFunctionInfoDataAtIndex()
318   return DataExtractor(Bytes, Endian == llvm::endianness::little, 4);  in getFunctionInfoDataAtIndex()
354   switch (Hdr->AddrOffSize) {  in dump()
365     switch (Hdr->AddrOffSize) {  in dump()
440     if (FE->Dir == 0 && FE->Base == 0)  in dump()
442     StringRef Dir = getString(FE->Dir);  in dump()
443     StringRef Base = getString(FE->Base);  in dump()
457   OS << "<invalid-file>";  in dump()