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Define an asm macro, called SPL:
asm void SPL(newpri)
{
% reg newpri;
spl newpri
% con newpri;
movw newpri,%r0
spl %r0
}
The lines that begin with
%
are patterns.
If the arguments at the time the macro is called match the
storage modes
in a pattern,
the code that
follows the pattern line will be expanded.