如何使用pyelftools/libdwarf查找一行代码

from elftools.elf.elffile import ELFFile
from elftools.dwarf.locationlists import LocationEntry
from elftools.dwarf_die import DIE

def find_line_number(elf_file_path, file_name, line_number):
    with open(elf_file_path, 'rb') as f:
        elf_file = ELFFile(f)
        dwarf_info = elf_file.get_dwarf_info()

        for cu_die in dwarf_info.iter_CUs():
            if cu_die.tag == 'DW_TAG_compile_unit':
                # 遍历编译单元中的所有 DIE
                for die in cu_die.iter_dies():
                    if die.tag == 'DW_TAG_subprogram':
                        # 查找函数或方法的 DIE
                        for child_die in die.iter_dies():
                            if child_die.tag == 'DW_TAG_inlined_subroutine':
                                # 查找内联函数的 DIE
                                for grandchild_die in child_die.iter_dies():
                                    if grandchild_die.tag == 'DW_TAG_line_number_program':
                                        # 查找行号程序的 DIE
                                        lineprog = grandchild_die.line_program
                                        for entry in lineprog.get_entries():
                                            if entry.is_extended:
                                                continue
                                            file_entry = entry.get_file()
                                            if file_entry.name == file_name:
                                                if entry.line == line_number:
                                                    return entry.address

        return None

# 使用示例
address = find_line_number('path_to_your_executable', 'source_file.c', 42)
if address is not None:
    print(f'Line 42 in source_file.c corresponds to address {hex(address)}')
else:
    print('Line not found')