------- Additional Comments From corsepiu at gcc dot gnu dot org 2005-01-12 10:30 ------- (In reply to comment #3) > What do you want the ABI for soft-float to be? > As RTEMS is probably the only user of -msoft-float, you get to choose. -msoft-float basically is just a synomym for -no-80387 (-MASK_80387 in i386.h), so there probably are more users.
> Do you want -msoft-float to imply -mno-fp-ret-in-387, do you want to supply > it yourself, or do you want to admit that all shipping processors have an > fpu and/or the os has an emulator? Neither. The actual problem is people using RTEMS on original i386dx's for whom previous verions of gcc had required -mtune=i386 -mno-80387 -no-fp-ret-in-387 rsp. -mcpu=i386 -msoft-float -no-fp-in-387. For other cpus, coupling -msoft-float with -no-fp-in-387 has proven not to be necessary. This all is the reason for RTEMS gcc to use this kind of multilibs: i386-rtems4.7-gcc --print-multi-lib .; m486;@mtune=i486 mpentium;@mtune=pentium mpentiumpro;@mtune=pentiumpro k6;@mtune=k6 athlon;@mtune=athlon soft-float;@msoft-float soft-float/nofp;@[EMAIL PROTECTED] m486/soft-float;@[EMAIL PROTECTED] -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19379
