arm-elf-gdb memory

Hi,

I am trying to run an arm executable on linux pc.
arm-elf-run exec infile outfile stops at a calloc
memory not sufficient. BUT
arm-elf-run -m <size in pow of 2> exec infile outfile WORKS.
But i need to debug the code.
so
arm-elf-gdb exec infile outfile does not work as
it stops at calloc and says
memory not sufficient.

How do i pass memory to gdb?

Regards,
Namitha.