There is some documentation on the SHARC Linker user manual. Unfortunately the packing part is very obscure and I don't understand how it works.
PACKING(12 B3 B4 B5 B6 B0\
B11 B12 B1 B2 B0\
B7 B8 B9 B10 B0)
I would like to understand that the above example does exactly on a ADSP-213171.
Is there readable documentation about this?