On Mon, Sep 22, 2008 at 4:07 PM, Wright, Chuck <[EMAIL PROTECTED]> wrote: > I've found a case where memcpy() is failing on copies longer that 4 > bytes. > > Closer investigation found that the destination pointer is not pointing > to a word aligned address. > > The problem comes from the JFFS2 driver where there is a struct that is > being used to create the destination pointer for the memcpy() function.
There is a thread about this problem here: http://thread.gmane.org/gmane.linux.drivers.mtd/21521 I don't believe it has been resolved yet. > > If I insert my own padding into the struct, my memcpy() problems go > away! > I'm concerned that this problem may be lurking in other areas of code. > (I get no warnings during compile) > > On the MPC5200B processor, is that the assumed behavior for an unaligned > memcpy()?? > Is there a gcc option to force word alignment?? > > I'm using a MontaVista supplied kernel and compiler. (not my choice!) > Unfortunately, six weeks later, MontaVista is still confused. > > Thanks for any help you can offer, > > Chuck Wright > > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-dev > -- Jon Smirl [EMAIL PROTECTED] _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
