Please excuse this cross-post, but I think it is of interest to both RTAI and Linux PPC folks.
I am making a kernel module (an RTAI task) that needs floating point support so I'm using IBMs perflib floating-point libraries (on a Virtex-II Pro, aka ppc405). This is actually built from Matlab/simulink real-time workshop output (I can't use rtai-lab because I don't think lxrt is available for ppc)... so there end up being many object files to link. So, in the end I have a linker command as follows. powerpc-405-linux-gnu-ld -r -m elf32ppclinux -L/some/directories matlab_root/rtw/c/libsrc/rt_zcfcn.o other.o inputs.o -o module_output.o perflibs/fpopt/libppcfp.a Then I go to insert the module and.... /var/shm # insmod test001_build_rtmodule.o Warning: loading test001_build_rtmodule.o will taint the kernel: non-GPL license - Proprietary See http://www.tux.org/lkml/#export-tainted for information about tainted modules test001_build_rtmodule.o: Unhandled relocation of type 11 for __fixdfsi test001_build_rtmodule.o: Unhandled relocation of type 11 for __fixdfsi Hrmm... so any ideas on what type 11 is? I can see from the code in modutils that this value is inside rel->r_info, such as R_PPC_ADDR32 or R_PPC_ADDR16_HA. But where do I get more info about where r_info gets assigned? Do I need to link libppcfp.a in a particular way? Any hints would be appreciated. Thanks in advance. Joshua -- Xiphos Technologies (514) 848-9640 x227 (514) 848-9644 fax www.xiplink.com _______________________________________________ The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. If you have received this in error, please contact the sender and delete this communication and any copy immediately. Thank you.
