An att compilation problem to be solved (coming soon)

A new att assembly problem (coming soon)-General Linux technology-Linux programming and kernel information. For more information, see the following. This is what I wrote. I want to use the bubble algorithm to arrange a group of data and then output the data. but I always feel a bit problematic. I hope the experts can help me ......


. Section. data
Output:
. Asciz "ni yao de shu shi % d \ n"
Msg:
. Long 55555555,33333, 53,56, 25, 52, 56,631,566 7
Len =.-msg
. Section. text
. Globl _ start
_ Start:

Movl $ len, % ecx
Decl % ecx
Cp1:
Movl $0, % eax
Pushl % ecx
Cp2:
Movl msg (, % eax, 4), % edx
Incl % eax
Cmpl msg (, % eax, 4), % edx

Jae next
Xorl % edx, % edi
Movl % edx, % edi
Xchg msg (, % eax, 4), % edx
Decl % eax
Movl % edi, msg (, % eax, 4)
Next:
Incl % eax
Loop cp2
Popl % ecx

Loop cp1
Pushl % edx // the part to be modified
Pushl $ output
Call printf
Addl $8, % esp

Movl $0, % ebx
Mov $1, % eax
Int $0x80