如何使用GCC中的内联程序集进行相对跳转/调用(x86_64)

I'm working on writing an exploit to spawn a shell from scratch. (i.e. to be used in a buffer overflow). One of the problems I'm facing is getting the jmp statements to work. My understanding is that the jmp instruction is relative to the ip. However when I try to run the following in inline assembly I get a jump to an absolute address.I'm working on writing an exploit to spawn a sh