完善初始化工具链脚本，增加对“已存在工具链配置文件“情况的判断 (#9)

Patch support run first demo on dragonos (#6)

* 为dragonos进行配置

* Patch support run first demo on dragonos (#5)

* malloc with error

* 修改，解决系统调用错误问题、递归调用问题

* patch-memory-align

* 恢复更改&条件

Patch support run first demo on dragonos (#6)

* 为dragonos进行配置

* Patch support run first demo on dragonos (#5)

* malloc with error

* 修改，解决系统调用错误问题、递归调用问题

* patch-memory-align

* 恢复更改&条件编译

Co-authored-by: longjin <longjin@RinGoTek.cn>
Co-authored-by: Gou Ngai <sujintao@dragonos.org>

show more ...

Add sys_dup and sys_dup2 support (#2)

Co-authored-by: su <sujintao@dragonos.org>