Library support in gcc

[sumanth]

Hi,
I am building a cross-compiler for a 32-bit processor.
Gcc version is gcc-4.3.4.
There is no support for DImode(or larger) and DFmode(or larger)
Are the libraries from libgcc2.c(gcc/libgcc2.c) and fp-bit.c in 
gcc/config/ directory are sufficient for my compiler.
How can I avoid building DI/DF mode libraries and where should I specify it.

Thanks in advacne