How can pass arguments in registers in GCC?

[Le Ton Chanh]

I defined macro FUNCTION_ARG and other macros in section "Passing Arguments in Registers" of GCCInt to pass args in regs. It compiled OK, but when I use the number of args greater than the number regs in macro FUNCTION_ARG_REGNO_P, it crashes with notice: "internal compiler error: Segmentation fault". How can I fixed this bug?
Thanks so much for your help.

Le Ton Chanh 
email:letonchanh at yahoo dot com