On Oct 19, 2013, at 5:24 PM, Ben Hutchings wrote: > When building lib/raid6/altivec8.o with gcc 4.8 on Debian, the compiler > is generating references to two new runtime subroutines which are > apparently not included in the kernel: > > ERROR: "_restvr_20" [lib/raid6/raid6_pq.ko] undefined! > ERROR: "_savevr_20" [lib/raid6/raid6_pq.ko] undefined! > > The save/restore subroutines are specified in > http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi-1.7.1.html#SAVE-RESTORE > and we do have the _restgpr_* and _savegpr_* subroutines in > arch/powerpc/boot/crtsavres.S. I'm not sure whether these subroutines > should be added or whether this indicates the compiler is doing > something wrong. > > A configuration that triggers this is included below. > > Ben.
Try with CONFIG_CC_OPTIMIZE_FOR_SIZE=n. A feature was added to gcc for -Os to "outline" the save/restore routines. I'm surprised this hasn't shown up sooner. Well need to add _restvr_* / _savevr_* to the version in lib/crtsaveres.S. http://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=libgcc/config/rs6000/crtrestvr.S;hb=HEAD http://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=libgcc/config/rs6000/crtsavevr.S;hb=HEAD - k _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
