[PTLsim-devel] Is PTLsim u-ops fixed- or variable- length?

Tue Aug 14 22:15:18 EDT 2007

Hi,

I was wondering whether PTLsim assumes u-ops that are variable or fixed 
length?

Chapter 5 of the user guide says that each u-op has 3 sources and 1 
destination, so it seems to imply format consitency accross u-ops, which 
may translate to having fixed length u-ops.

However, various u-ops defined in opinfo table in ptlhwdef.cpp seems to 
use different number of operands (i.e. based on the flagops entry, e.g. 
opAB for "and" u-op, and opABC for "add").

Thanks.