• Greg Ungerer's avatar
    m68k: merge mmu and non-mmu bitops.h · 171d809d
    Greg Ungerer authored
    The following patch merges the mmu and non-mmu versions of the m68k
    bitops.h files. Now there is a good deal of difference between the two
    files, but none of it is actually an mmu specific difference. It is
    all about the specific m68k/coldfire varient we are targeting. So it
    makes an awful lot of sense to merge these into a single bitops.h.
    There is a number of ways I can see to factor this code. The approach
    I have taken here is to keep the various versions of each macro/function
    type together. This means that there is some ifdefery with each to handle
    each CPU type.
    I have added some comments in a couple of appropriate places to try
    and make it clear what the differences we are dealing with are.
    Specifically the instruction and addressing mode differences we have
    to deal with.
    The merged form keeps the same underlying optimizations for each CPU
    type for all the general bit clear/set/change and find bit operations.
    It does switch to using the generic le operations though, instead of
    any local varients.
    Build tested on ColdFire, 68328, 68360 (which is cpu32) and 68020+.
    Run tested on ColdFire and ARAnyM.
    Signed-off-by: default avatarGreg Ungerer <gerg@uclinux.org>
    Acked-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Kconfig.nommu 17.4 KB