https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96253
--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- DFP is not supported for either AArch32 or AArch64; nor do the respective ABI documents say what the ABI would be for it (though a GCC patch for the AArch64 case was submitted in <https://gcc.gnu.org/legacy-ml/gcc-patches/2017-07/msg00788.html>). GCC supports DFP for x86_64 / x86, powerpc and S/390 (x86_64 / x86 using BID format, the others using DPD).
