In
,
on 12/30/2011
at 01:20 PM, Chris Craddock said:
>Additional *SOFTWARE* architectural conditions may have to be
>satisfied in order for the instruction to complete,
ITYM that additional software conditions must be met before the OS
will set the necessary control register fields to allow e
The principles of operation requires very careful reading. As I would
guess have most, I have failed to be careful enough many times.
>The table, Figure 5-6, titled "Summary of Authorization
>Mechanisms" includes semiprivileged instructions _and_
>some others; Looking carefully, I cannot discer
In <4efdc456.2050...@trainersfriend.com>, on 12/30/2011
at 07:01 AM, Steve Comstock said:
>the consistency is not what I, personally, would like.
I don't see the inconsistency in what you mentioned. I agree that the
definitions should precede the use, or, at the least, a reference
prior to a
Steve, Peter is (of course) right. You're struggling with cases where most
people generally miss the distinction between the hardware architecture and
the software architecture implemented by any given "control program". The
hardware knows nothing at all about what you would think of as
"authoriza
On 12/30/2011 5:52 AM, Peter Relson wrote:
I have noted a couple of omissions in the PoPs that I will submit
a Readers Comment for
I didn't notice that any of the things you mentioned regarding the PoOp
are necessarily omissions or things to be corrected (but I might have
missed it). You questi
>I have noted a couple of omissions in the PoPs that I will submit
>a Readers Comment for
I didn't notice that any of the things you mentioned regarding the PoOp
are necessarily omissions or things to be corrected (but I might have
missed it). You questioned the list of semiprivileged instructio
On 12/29/2011 8:57 AM, Peter Relson wrote:
z/OS itself does not provide support for TRAP2/TRAP4. But some
(authorized) program products do this on their own (a bad decision not to
have this provided by the operating system).
...
The long and short of it is that you can't use
TRAP2/TRAP4 "on yo
[Consolidating several responses]
On 12/29/2011 6:57 AM, Peter Relson wrote:
<>
BSG - Branch in Subspace Group
EREG- Extract stacked REGisters (32 bits)
EREGG - Extract stacked REGisters Grande (64-bits)
ESTA- Extract stacked STAte
LPTEA - Load Page Table Entry Address <== priv
<>
>BSG - Branch in Subspace Group
>EREG- Extract stacked REGisters (32 bits)
>EREGG - Extract stacked REGisters Grande (64-bits)
>ESTA- Extract stacked STAte
>LPTEA - Load Page Table Entry Address
>MSTA- Modify stacked STAte
>SSAR- Set Secondary ASN
>SSAIR - Set Secondar
On 12/28/2011 2:57 PM, Tony Harminc wrote:
On 28 December 2011 15:16, Steve Comstock wrote:
The PoPs says, on page 5-24 in the PDF version (dz9zr008.pdf /
SA22-7832-08), "there are 23 semiprivilged instructions".
[...]
PC - Program Control
That's Program Call...
Tony H.
You're righ
On 28 December 2011 15:16, Steve Comstock wrote:
> The PoPs says, on page 5-24 in the PDF version (dz9zr008.pdf /
> SA22-7832-08), "there are 23 semiprivilged instructions".
[...]
> PC - Program Control
That's Program Call...
Tony H.
---
[Cross-posted to the mainframe assembler list]
[This is in two parts because of restrictions on posting
size for the assembler list.]
Based on some earlier posts on the mainframe assembler list,
I have been researching the semiprivileged instructions to
see which ones might be useful for appli
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