I need to find out which entries in the user part of the TYPE-3 ESR (SVC 109)
table are in use so that duplicate use can be avoided.
Using SHOWZOS I have the following entries that are of interest two of my
systems that run the program that uses SVC 109 ESR # 206.
# EP Desc Type # EP
Desc Type
.
.
52 819E565C - T3 53 85FA7910 P IDICSVCR
T3
54 819E565C - T3 55 819E565C -
T3
206 80D6D000 P IGX00206 T3 207 819E565C - T3
208 819E565C - T3 209 819E565C -
T3
Numbers 52-55 are the highest in the IBM range and there are no higher numbers
in use.
I know what 206 represents and how it got there.
What I would like to understand is what the entries for 207, 208 and 209
represent.
The EP address is, I think, the IGXERROR entry point. since the same address is
used in all the IBM part of the ESR TABLE (below 200) that do not have modules
identified
Could this mean that at some stage some routine has set up and used 207 - 209
then withdrawn the code and reset the EP address?
If this is the case, then of course 207-209 have to be considered as 'in use'
by 'something' until I can find out definitely what used them. I could not find
modules IGX00207, IGX00208, or IGX00209 in LPA or LINKLIST.
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