Re: Re: Info on the mvs source volumes

Well, on hercules-os380 there is a guy trying to port his PDOS to the mainframe.
http://tech.groups.yahoo.com/group/hercules-os380/

He has assmassed (or recreated) all the source for TK3 and brought up
to date with a disassembler.

On Sat, Oct 23, 2010 at 1:03 PM, Harold Bell <[email protected]> wrote:
>
> ________________________________
> From: halfmeg <[email protected]>
> To: [email protected]
> Sent: Sat, October 23, 2010 8:29:16 AM
> Subject: [turnkey-mvs] Re: Info on the mvs source volumes
>
> > Harold Bell wrote:
>
> > I am thinking about modifying the the MVS3.8j source and have been
> > unable to get a handle on what needs to be done to compile MVS.
>
> Is there a specific area you are thinking about?
>
> Installation of 3.8j is done from the distribution library tape which contains object or load modules not much source other than macros. AFAIK there is no assembly or link procedure distributed or published which starts with the source files as input.
>
> The DLIB tape is at a software level where numerous PTFs were applied by IBM before distribution. The source that we have doesn't necessarily match what is running. The addition of PTFs to the system, most of which were distributed in object format without source adds additional mismatches between what is running and the source we have. As if that weren't enough, not all the source was included in the distributions various people received and some of what was received was truncated in the middle of the file.
>
> To summarize:
>
> We don't have source for all the modules running - some source missing altogether.
>
> We don't have source which matches running modules - PTFs applied but no source provided.
>
> We don't have source because partial source is all we have - end of source member simply missing on the source tape.
>
> > Googling doesn't seem to move me forward so I was wondering if there
> > is perhaps an early 1980's book that delves into the OS building
> > process or internals I might try to find on ebay or where ever. Any
> > web resources that anyone knows of would be appreciated. Thanks.
> > Buddy
>
> http://www.bitsavers.org/ has numerous manuals on IBM hardware and software. They have several mirrors available.
>
> Phil
>
>
>
> I was considering fairly radical action to improve performance.  If the entire source were available I was thinking of cross compiling to gcc and redoing the i/o structure for linux.  Wild idea.  After the info I have gotten on the state of the source I am now leaning towards a maybe wackier idea and modifing Hercules to be able to switch between emulated 370 instructions and segments of native linux gcc.  If I could get it to work I could recode some of the source that is available and leave the 370 stuff without source alone, piece by piece.
>
> Buddy
>
>
> 


--
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?