On Wed, 6 Oct 2021, Segher Boessenkool wrote: > Soft float is not described in any formal ABI btw (well, except the > Power 32-bit embedded ABI :-) ) -- it is an compiler-internal affair.
It's fully documented in the unified 32-bit ABI document (under ATR-SOFT-FLOAT conditionals). There's still some code in the compiler for a very old soft-float ABI for binary128 long double (passing by reference, using _q_* libcall names). I don't really think it makes much sense to use that for future _Float128 support for soft-float (certainly not the _q_* libcalls), rather than passing in four consecutive GPRs as is done for IBM long double for soft float, but we could. -- Joseph S. Myers jos...@codesourcery.com
