================
@@ -983,6 +994,67 @@ llvm::Error
ProcessElfCore::ParseThreadContextsFromNoteSegment(
}
}
+UUID ProcessElfCore::FindBuidIdInCoreMemory(lldb::addr_t address) {
+ UUID invalid_uuid;
+ 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);
+
+ // 80 bytes buffer is larger enough for the ELF header or program headers
+ unsigned char buf[80];
+ Status error;
+ size_t byte_read = ReadMemory(address, buf, elf_header_size, error);
+ if (byte_read != elf_header_size || !elf::ELFHeader::MagicBytesMatch(buf))
+ return invalid_uuid;
+ assert(sizeof(buf) >= elf_header_size);
+ DataExtractor elf_header_data(buf, elf_header_size, GetByteOrder(),
+ addr_size);
+ lldb::offset_t offset = 0;
+
+ elf::ELFHeader elf_header;
+ elf_header.Parse(elf_header_data, &offset);
+
+ const lldb::addr_t ph_addr = address + elf_header.e_phoff;
+
+ for (unsigned int i = 0; i < elf_header.e_phnum; ++i) {
+ byte_read = ReadMemory(ph_addr + i * elf_header.e_phentsize, buf,
+ elf_header.e_phentsize, error);
+ if (byte_read != elf_header.e_phentsize)
+ break;
+ assert(sizeof(buf) >= elf_header.e_phentsize);
+ DataExtractor program_header_data(buf, elf_header.e_phentsize,
+ GetByteOrder(), addr_size);
+ offset = 0;
+ elf::ELFProgramHeader program_header;
+ program_header.Parse(program_header_data, &offset);
+ if (program_header.p_type != llvm::ELF::PT_NOTE)
+ continue;
+
+ std::vector<uint8_t> note_bytes;
+ note_bytes.resize(program_header.p_memsz);
+
+ byte_read = ReadMemory(program_header.p_vaddr, note_bytes.data(),
+ program_header.p_memsz, error);
+ if (byte_read != program_header.p_memsz)
+ continue;
+ assert(sizeof(buf) >= program_header.p_memsz);
----------------
labath wrote:
This looks like an obsolete assertion as the program headers are read into a
dynamically sized vector now.
https://github.com/llvm/llvm-project/pull/92492
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