Hi Kavitha, You may need to do check/modification in given below files, but why you want change this default ABI specification? * linux.h * m68k.c * m68kemb.h * m68k.md * netbsd-elf.h Regards, Sandeep Kumar Singh Senior Technical member staff, AESBU - Infotainment & Clusters KPIT Technologies Limited Phone: +91-20-66525000 | cell: +91-9730704579