Re: MI400 Digest, Vol 8, Issue 5 -- MI400

retired :: you ask a question (and if i look) [developed a MI xlator OPM] which could reconstruct the subject program from the code .. though i dont trace what IBM has done in recent releases i do have some understanding ... will review your e-mail
OPM is well known .. perhaps not documented

--- On Sat, 3/6/10, mi400-request@xxxxxxxxxxxx <mi400-request@xxxxxxxxxxxx> wrote:

From: mi400-request@xxxxxxxxxxxx <mi400-request@xxxxxxxxxxxx>
Subject: MI400 Digest, Vol 8, Issue 5
To: mi400@xxxxxxxxxxxx
Date: Saturday, March 6, 2010, 10:00 AM
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Today's Topics:

   1. Re: QPROCT and QPRODT (Richard
Thomas)

----------------------------------------------------------------------

message: 1
date: Fri, 5 Mar 2010 19:10:35 -0000
from: "Richard Thomas" <richard_matthew_thomas@xxxxxxxxxxx>
subject: Re: [MI400] QPROCT and QPRODT

Gene,

I can't thank you enough for your help. I'll let you know
how I get along.

Best wishes,

Richard

-----Original Message-----
From: mi400-bounces@xxxxxxxxxxxx
[mailto:mi400-bounces@xxxxxxxxxxxx]
On
Behalf Of Gene_Gaunt@xxxxxxxxxxxxxxx
Sent: 05 March 2010 14:30
To: MI Programming on the AS400 / iSeries
Subject: Re: [MI400] QPROCT and QPRODT

I'm in the process of writing a routine to parse the
instruction stream component of an OPM program and
return the IRP. I'm hoping to use the information
within QPROCT and QPRODT to help my routine

anticipate

the number of operands, operand types etc. for a

given

op code. I've been able to determine the easy parts
(e.g. op code, op name, number of parameters) from a
part of the QPROCT space, but am at a loss as to what
an op code's associated entry in the QPRODT index is
telling me.

Can anyone throw some light on any of the information
contained in these two objects?

Many thanks.

Here is how to read those QPRODT index entries into your MI
disassembler
project. Break each 94-byte index entry into two
2-byte chunks and fifteen
6-byte chunks, and PRINT them in this order:

00 01
02 03
04 05 06 07 08 09
0A 0B 0C 0D 0E 0F
10 11 12 13 14 15
16 17 18 19 1A 1B
1C 1D 1E 1F 20 21
22 23 24 25 26 27
28 29 2A 2B 2C 2D
2E 2F 30 31 32 33
34 35 36 37 38 39
3A 3B 3C 3D 3E 3F
40 41 42 43 44 45
46 47 48 49 4A 4B
4C 4D 4E 4F 50 51
52 53 54 55 56 57
58 59 5A 5B 5C 5D

Study the PRINT-OUT this way, you'll have an Aha! moment
and will see the
choice pool of operand types and lengths.

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End of MI400 Digest, Vol 8, Issue 5
***********************************