Greg Hughes wrote:
>
> Inline assembly experts,
>
> I've been palying with RedHat 7.1 Beta. This ships with gcc 2.96.77,
> which is much better than the 2.96 bundled with RedHat 7.0. This
> compiler can build the xc tree from the trunk, but it chokes trying to
> build the mesa-3-5-branch. It doesn't like the COPY_DWORDS macro in the
> r128, radeon, and i810 directories.
>
> #define COPY_DWORDS( j, vb, vertsize, v ) \
> __asm__ __volatile__( "rep ; movsl" \
> : "=%c" (j), "=D" (vb) \
> : "0" (vertsize), \
> "D" ((long)vb), \
> "S" ((long)v) \
> : "esi" )
>
> The error is:
>
> Can't find a register in class `SIREG' while reloading `asm'.
>
> My question: Is this a compiler defect, or is the compiler just being
> more strict?
Hmmm... Not really sure. A certain amount of fiddling went into choosing
that assembly. I'd suggest looking at the info files for that version of gcc
to try and verify the code.
Keith
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