mp@mit-eddie.UUCP (08/09/83)
The 4.{1,2}bsd stab(5) man page claims that the n_desc field (a short) can
be considered a
struct desc {
short q6:2,q5:2,q4:2,q3:2,q2:2,q1:2,basic:4
};
However, this structure is backwards; the bit fields are assigned
right-to-left on a VAX, yet the format of n_desc (as set up by pcc) is such
that the "basic" field is in the low 4 bits, q1 is just to the left of that,
and so on.
It's interesting to note that neither pcc nor sdb uses the desc structure;
they prefer to do the left and right shifts "manually".
Mark