ATTACHX ETXR registers

[Leonard D Woren]

I can't find any doc at all on registers at entry to the ETXR on 
ATTACH[X], other than R13 and R14.  Can anyone point me to official 
IBM doc for more registers at entry to ETXR?

The reason I'm looking for this is that I have a RENT program with an 
ETXR, and I'm using a half-century old ugly hack, which is to copy a 
stub to dynamic storage and have a parm pointer in the dynamic area 
following the stub.

The problem is that I'm changing the main dynamic area to 
EXECUTABLE=NO and it would be annoying to have to a obtain and track 
another tiny bit of storage just for the stub.

So, the question really boils down to "how do you write a re-entrant 
ETXR without copying a stub to dynamic storage?"


/Leonard