RE: [PATCH v2] kbuild: treat char as always unsigned

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



....
> > int strcmp1(const char *cs, const char *ct)
> > {
> >         int res;
> >
> >         asm ("\n"
> >                 "1: move.b  (%0)+,%2\n"  /* get *cs */
> >                 "   jeq     2f\n"        /* end of first string? */
> >                 "   cmp.b   (%1)+,%2\n"  /* compare *ct */
> >                 "   jeq     1b\n"        /* if equal, continue */
> >                 "   jra     3f\n"        /* else skip to tail */
> >                 "2: cmp.b   (%1)+,%2\n"  /* compare one last byte */
> >                 "3: subx.l  %2, %2\n"    /* -1 if borrow, 0 if not */
> >                 "   jls     4f\n"        /* if set, z is from sub.b */
> 
> The subx will set Z unless C was set.
> So that doesn't seem right.

Clearly my brain was asleep earlier.
subx will clear Z not set it.

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)




[Index of Archives]     [Linux&nblp;USB Development]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite Secrets]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux