Ping ? http://gcc.gnu.org/ml/gcc-patches/2012-06/msg00806.html
libgcc/ChangeLog 2012-06-13 Nick Clifton <ni...@redhat.com> * fp-bit.h (FLOAT_BIT_ORDER_MISMATCH): If LIBGCC2_FLOAT_BIT_ORDER_MISMATCH is defined then use this to determine if FLOAT_BIT_ORDER_MISMATCH should be defined. * config/rx/rx-lib.h (LIBGCC2_FLOAT_BIT_ORDER_MISMATCH): Define to false.