geekos中ELF介绍和用法。熟悉ELF文件格式，了解GeekOS系统如何将ELF格式的用户可执行程序装入到内存，建立内核进程并运行的实现技术。-geekos in the introduction and use of ELF. Familiar with the ELF file format, to understand how the system will GeekOS users ELF format executable program loaded into memory, t