(i387_supply_fxsave, i387_fill_fxsave): New prototypes. * i387-nat.c (i387_supply_fsave): Declare `val' as `unsigned int'. (fxsave_offset): New variable. (FXSAVE_ADDR): New macro. (i387_supply_fxsave, i387_fill_fxsave, i387_tag): New functions.