Disassembled .o shows only file format,

Code:

# Copyright 1998-2004 - Just For Fun Software, Inc., all rights reserved
# Author:  George Woltman
# Email: woltman@alum.mit.edu
#

# ********************************************************
# ********************************************************
# ********************  FFT MACROS  **********************
# ********************************************************
# ********************************************************

## Perform a 32-element FFT.

.macro fft32
LOCAL   b1b, c1b

## Do a forward FFT only

.if      type EQ 1
 call    x32_fft
 jmp     xmiddle_1
       .endif

## Do a squaring

.if      type EQ 2
 call    x32_fft
 call    xmiddle_2
##      jmp     x32_finish_unfft
.endif

## Do a multiply

.if      type EQ 3
 call    x32_fft
 call    xmiddle_3
 jmp     x32_finish_unfft
.endif

## Do a multiply with pre-FFTed inputs

.if      type EQ 4
 call    xmiddle_4
 jmp     x32_finish_unfft
.endif

## Do FFT levels 1,2,3
## Values 0-31 is real data.
##
## On input the 32-byte cache lines hold these data values:
##      0       16      1       17
##      2       ...
##      ...     ...
##      14      ...
## On output the 32-byte cache lines hold these data values:
##      0       4       1       5
##      2       ...
##      8       ...
##      ...

## Do 4 eight_reals_first_fft macros
##      distance between fft data elements is 4

.if      type EQ 1
x32_fft:
        copy_7_words
 subl    %eax,%eax
b1b: disp eight_reals_first_fft, 4*dist1, 8*dist1, 8
 leal    dist1(%esi),%esi        ## Next source pointer
 addb    $256/4, %al             ## Test loop counter
 jnc     b1b                     ## Iterate if necessary
 leal    esi-4*dist1,%esi        ## Restore source pointer

## End common FFT code

 ret
.endif

## Do inverse FFT levels 1,2,3
## On input the 32-byte cache lines hold these data values:
##      0       4       1       5
##      2       ...
##      8       ...
##      ...
## On output the 32-byte cache lines hold these data values:
##      0       16      1       17
##      2       ...
##      ...     ...
##      14      ...

## Do 4 eight_reals_last_unfft macros
##      distance between fft data elements is 4

.if      type EQ 2
x32_finish_unfft:
c1b: disp eight_reals_last_unfft, 8, 4*dist1, 8*dist1
 leal    dist1(%esi),%esi        ## Next source pointer
 addb    $256/4, %al             ## Test loop counter
 jnc     c1b                     ## Iterate if necessary
 leal    esi-4*dist1,%esi        ## Restore source pointer
       fft_3_ret
       .endif
       .endm
       .end

Hey guys, when I asssembled this AT&T macro file to .o and I disassembled it with objdump, it only shows the file format instead of the binary and source codes. What is wrong with the source codes here? Need to know it because it is urgent.