================ @@ -983,6 +1001,66 @@ llvm::Error ProcessElfCore::ParseThreadContextsFromNoteSegment( } } +bool ProcessElfCore::IsElf(lldb::addr_t address) { + uint8_t buf[4]; + Status error; + size_t byte_read = ReadMemory(address, buf, 4, error); + if (byte_read != 4) + return false; + return elf::ELFHeader::MagicBytesMatch(buf); +} + +std::optional<UUID> ProcessElfCore::FindNoteInCoreMemory(lldb::addr_t address, + uint32_t type) { + if (!IsElf(address)) + return std::nullopt; + const uint32_t addr_size = GetAddressByteSize(); + const size_t elf_header_size = addr_size == 4 ? sizeof(llvm::ELF::Elf32_Ehdr) + : sizeof(llvm::ELF::Elf64_Ehdr); + + unsigned char buf[4096]; + Status error; + size_t byte_read = ReadMemory(address, buf, elf_header_size, error); + if (byte_read != elf_header_size) + return std::nullopt; + DataExtractor data(buf, 4096, GetByteOrder(), addr_size); + lldb::offset_t offset = 0; + + elf::ELFHeader elf_header; + elf_header.Parse(data, &offset); ---------------- clayborg wrote:
Use `header_data` to only allow access to the bytes we read. ``` elf_header.Parse(header_data, &offset); ``` https://github.com/llvm/llvm-project/pull/92492 _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits