unable to disassemble to source

[durai]

Hi,
Iam working on porting RTEMS 4.6.0 pre5 to MIPS lx4189 (r3000 mips1) core
based board. I am using the latest mips toolchain from the rtems website.
When I try to disassmble the hello.exe with "mips-rtems-objdump -S
hello.exe" , I am getting only the assembly code and no c source code.
when i try to disassemble the indiviual object files , I am able to find the
c source with assembly code.
How can I get the disassembled code with c source?

regards
durai