PowerPC assembler. was: Analyzing SAV save files from a PC -- MI400

Just asking.  I understand that with IBM and the FBI possibly having Leif in
shackles, any attempt to port a PPC assembler to the 400 is a very risky
undertaking. I still cant help but hope that someone does it some day.

-Steve

-----Original Message-----
From: mi400-bounces@xxxxxxxxxxxx [mailto:mi400-bounces@xxxxxxxxxxxx]On
Behalf Of Don
Sent: Thursday, August 26, 2004 1:01 PM
To: MI Programming on the AS400 / iSeries
Subject: RE: [MI400] Analyzing SAV save files from a PC




Steve,

uh, you want Santa to come early this year I take it...:)



On Thu, 26 Aug 2004, Steve Richter wrote:

> Dave,
>
> this is great stuff.  For your next assignment please unlock the PowerPC
> assembler that must lie at the core of the iSeries!  It would make my day
if
> I write PPC assembler code that sets an instruction pointer to code in a
> user space and then executes a far jump to that code.
>
> -Steve
>
> -----Original Message-----
> From: mi400-bounces@xxxxxxxxxxxx [mailto:mi400-bounces@xxxxxxxxxxxx]On
> Behalf Of Dave McKenzie
> Sent: Thursday, August 26, 2004 12:01 PM
> To: MI Programming on the AS400 / iSeries
> Subject: Re: [MI400] Analyzing SAV save files from a PC
>
>
> If you use SST to dump the pgm that displays save files, QSYS/QSRDSAVF,
> you see some interesting tables (from a V5R1 machine, folded to 16 chars
> for email):
>
> 0A000A02E2C1E5D3  C9C24040404003E2  *....SAVLIB    .S*
> C1E5E2E8E2404040  4004E2C1E5E2E8E2  *AVSYS    .SAVSYS*
> 4040404005E2C1E5  E2E8E24040404006  *    .SAVSYS    .*
> E2C1E5E2E8E24040  404007E2C1E5C3C6  *SAVSYS    .SAVCF*
> C740404040080AE2  C1E5E2C5C3C4E3C1  *G    ..SAVSECDTA*
> 400BE2C1E5C4D3D6  404040400CE2C1E5  * .SAVDLO    .SAV*
> E2C1E5C6C4E3C10D  E2C1E5D3C9C3D7C7  *SAVFDTA.SAVLICPG*
> D4400E0FE2C1E5E2  E3C74040404010E2  *M ..SAVSTG    .S*
> C1E5D6C2D1404040  4011E2C1E5C3C8C7  *AVOBJ    .SAVCHG*
> D6C2D14012E2C1E5  E2E8E2C9E2C44013  *OBJ .SAVSYSISD .*
> 14E2C1E540404040  40404015FFB85CD3  *.SAV       ...*L*
> C9C2D34040404040  FFB7F0F1F0F00000  *IBL     ..0100..*
> 000000000000207F  FF175CE2F3F84040  *..........*S38  *
> 20E5F1D9F1D4F020  E5F1D9F1D4F221E5  *.V1R1M0.V1R1M2.V*
> F1D9F2D4F022E5F1  D9F2D4F023E5F1D9  *1R2M0.V1R2M0.V1R*
> F3D4F024E5F2D9F1  D4F025E5F2D9F1D4  *3M0.V2R1M0.V2R1M*
> F126E5F2D9F2D4F0  27E5F2D9F2D4F028  *1.V2R2M0.V2R2M0.*
> E5F2D9F2D4F029E5  F2D9F2D4F030E5F2  *V2R2M0.V2R2M0.V2*
> D9F3D4F031E5F3D9  F0D4F532E5F3D9F1  *R3M0.V3R0M5.V3R1*
> D4F033E5F3D9F1D4  F034E5F3D9F1D4F0  *M0.V3R1M0.V3R1M0*
> 35E5F3D9F6D4F036  E5F3D9F2D4F03AE5  *.V3R6M0.V3R2M0.V*
> F3D9F7D4F03BE5F4  D9F1D4F03DE5F4D9  *3R7M0.V4R1M0.V4R*
> F1D4F43CE5F4D9F2  D4F03EE5F4D9F3D4  *1M4.V4R2M0.V4R3M*
> F03FE5F4D9F4D4F0  40E5F4D9F5D4F041  *0.V4R4M0 V4R5M0.*
> E5F5D9F1D4F00EEF  D8E2D94BD4C5D4C2  *V5R1M0..QSR.MEMB*
>
>
> The first table gives the command byte:
>
>   02 SAVLIB
>   03 SAVSYS
>   04 SAVSYS
>   05 SAVSYS
>   06 SAVSYS
>   07 SAVCFG
>   08 SAVSECDTA
>   0A SAVSECDTA
>   0B SAVDLO
>   0C SAVSAVFDTA
>   0D SAVLICPGM
>   0E SAVSTG
>   0F SAVSTG
>   10 SAVOBJ
>   11 SAVCHGOBJ
>   12 SAVSYSISD
>   13 SAV
>   14 SAV
>
> Strangely, it lists SAVOBJ as x10, although you get x01 if you do SAVOBJ
> to a save file.  If you change the save file to x10 with SST, DSPSAVF
> shows "QSYS" for the save command.
>
> The second table shows the release codes:
>
>   20 V1R1M0
>   20 V1R1M2
>   21 V1R2M0
>   22 V1R2M0
>   23 V1R3M0
>   24 V2R1M0
>   25 V2R1M1
>   26 V2R2M0
>   27 V2R2M0
>   28 V2R2M0
>   29 V2R2M0
>   30 V2R3M0
>   31 V3R0M5
>   32 V3R1M0
>   33 V3R1M0
>   34 V3R1M0
>   35 V3R6M0
>   36 V3R2M0
>   3A V3R7M0
>   3B V4R1M0
>   3C V4R2M0
>   3D V4R1M4
>   3E V4R3M0
>   3F V4R4M0
>   40 V4R5M0
>   41 V5R1M0
>
> Many anomalies and duplications.  As a programmer, it's comforting to
> see that even Rochester doesn't have its act together entirely.
>
> (They seem to have considered it a decimal number until V3R7.)
>
> If you use SST to change the byte in a save file to less than x20,
> DSPSAVF gives an error.  Presumably those are S/38 codes.
>
> Anybody have a running S/38? :-)
>
> --Dave
>
> On Wed, 2004-08-25 at 17:58, Mark S. Waterbury wrote:
> > Cool!  IFS was not introduced until V3R1, so you are okay with regard to
> > V2R3 and V3R0M5. (V3R0M5 was essentially just V2R3 "patched" to run on
the
> > then-new black box models. Why didn't they just call it V2R3M1? Because,
> if
> > you recall, IBM charged a significant fee to upgrade from V2 to V3.) If
> > anyone is really interested, I have an old machine running V2R1M0, I
could
> > "fire it up" and create a save file and see what it has for codes for
> V2R1,
> > and I could probably TGTRLS(*PRV) back at least as far as V1R3, perhaps
> even
> > V1R2... ;-)
> >
> > ----- Original Message -----
> > > From: "Dave McKenzie" <davemck@xxxxxxxxxxxxx>
> > > To: "MI Programming on the AS400 / iSeries" <mi400@xxxxxxxxxxxx>
> > > Sent: Wednesday, August 25, 2004 5:13 PM
> > > Subject: Re: [MI400] Analyzing SAV save files from a PC
> > >
> >
> > > Here's what I know about the release level codes:
> > >
> > >          SAVOBJ/
> > >          SAVLIB   SAV
> > > ---------------------
> > > V5R3M0    x43     xAF
> > > V5R2M0     42      AE
> > > V5R1M0     41      AD
> > > V4R5M0     40      AC
> > > V4R4M0     3F      AB
> > > V4R3M0     3E      AA *
> > > V4R1M4     3D      A9 *
> > > V4R2M0     3C      A8 *
> > > V4R1M0     3B      A7 *
> > > V3R7M0     3A      A6 *
> > > V3R2M0     36      A2
> > > V3R6M0     35      A1 *
> > > V3R1M0     34      A0
> > > V3R0M5     31
> > > V2R3M0     30
> > >
> > > Notice the gaps and codes out of order.  They may give a glimpse into
> > > the order that Rochester worked on the releases.
> > >
> > > The SAV codes marked with * are guesses, based on the sequence of the
> > > SAVOBJ/SAVLIB codes, which I'm sure of.
> > >
> > > I don't recall when the IFS was introduced, so I didn't try to guess
> > > V3R0M5 and V2R3.
> > >
> > > Don't ask me what V4R1M4 was :-)  I found it by manually changing the
> > > byte in the save file with SST, then looking at what DSPSAVF showed.
> > >
> > > --Dave
> > >
> > > On Wed, 2004-08-25 at 13:46, James H H Lampert wrote:
> > > > As of now, I'm able to generate a list of complete pathnames of
> > everything
> > > > in the save file. Thanks, Dave.
> > > >
> > > > Would anybody happen to know what the SAV release level codes are
for
> > V4R3
> > > > and prior? And what about the SAVOBJ/SAVLIB release level codes for
> > V5Rx?
> > > >
> > > > --
> > > > JHHL
> > >
>
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