Dixi quod… >Jessica Clarke brought out docs saying f8‥f15 must be saved, the >other FPU registers not:
This needs to be fixed in klibc. >>• klibc does not really support the FPU anyway > >… GCC chooses to allocate an FPU register for a pointer value. This is a curiosity. >>• the half of v10 that equals f10 just HAPPENS to be saved by >> glibc, but what if the upper half, that is outside of the FPU, >> is used? > >The question here is, does GCC only use the halves of the half >of the vector registers that match the FPU registers? 04:41⎜«jrtc27:#debian-x32» hephaistor: re s390x vector registers, reading the gcc and llvm sources they're ⎜ all call-clobbered by default, only the float parts are call-saved 04:41⎜«jrtc27:#debian-x32» so that's why setjmp/longjmp don't need to save/restore them 04:42⎜«jrtc27:#debian-x32» there *is* a vector calling convention, but it's not the default for the ABI, ⎜ it's opt-in, and setjmp/longjmp won't be annotated as such So we indeed need to only save the registers glibc does. >@klibc list: as indicated earlier, I can provide a patch if needed >(though it should be obvious). bye, //mirabilos -- [00:02] <Vutral> gecko: benutzt du emacs ? [00:03] <gecko> nö [00:03] <gecko> nur n normalen mac [00:04] <Vutral> argl [00:04] <Vutral> ne den editor -- Vutral und gecko2 in #deutsch (NB: Editor? Betriebssystem.)