No, I just finished looking for appropriate references for pure, reentrant and refreshable for use in an edit to a Wikipedia talk page. As usual, gargle insists that it knows better than me what I want to search form, and gives me lots of BS links.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@listserv.ua.edu> on behalf of John McKown <john.archie.mck...@gmail.com> Sent: Friday, May 25, 2018 12:30 PM To: IBM-MAIN@listserv.ua.edu Subject: Re: How to get BPX loadhfs (BPX1LOD) to load module into writable memory? On Fri, May 25, 2018 at 11:16 AM Seymour J Metz <sme...@gmu.edu> wrote: > The CS community uses "pure" for read-only. > Thanks. I thought that I had read something like like in the past, but I couldn't find the reference. By chance do you have a URL that I could refer to? I tried various searches, including "pure code" "pure program" "pure executable" and other "pure ..." type searches, but no useful results. > > > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 > > ________________________________________ > From: IBM Mainframe Discussion List <IBM-MAIN@listserv.ua.edu> on behalf > of John McKown <john.archie.mck...@gmail.com> > Sent: Thursday, May 24, 2018 3:58 PM > To: IBM-MAIN@listserv.ua.edu > Subject: Re: How to get BPX loadhfs (BPX1LOD) to load module into writable > memory? > > On Thu, May 24, 2018 at 2:09 PM Seymour J Metz <sme...@gmu.edu> wrote: > > > No. It means that the code will run correctly even if the OS refreshes it > > from DASD. That might mean that it is R/O, or it might only mean that the > > changes are not relevant to correct operation, e.g., storing data for > dump > > analysis that the module never looks at again. > > > > Now, IMHO it's bad form to play such games, but it's legal. > > > > Thanks. I thought that there was a word/phrase for a program which does > not modify anything within itself, including "data" areas. E.g. something > better than "not self-modifying". The only thing that I have found in my > searching is "ROMable code". Which I hope is self evident as "code which > will run correctly even if stored in ReadOnlyMemory". Apparently this is > what some of the ARM programmers, especially "embedded" programmers, use > for this. > > Now, personally, I _love_ that I can have z/OS fetch place RENT code in key > 0 memory. Hum, are those pages also marked "read only", or is the > protection only that most programs don't run key 0? I was hoping that I > could use the IARV64 REQUEST=PROTECT to make the memory ReadOnly, but > apparently that API can only be used with "memory objects" which are "above > the bar", not memory in the 0K-2GiB range. > > > > > > > > > -- > > Shmuel (Seymour J.) Metz > > http://mason.gmu.edu/~smetz3 > > > -- > Once a government places vague notions of public safety and security above > the preservation of freedom, a general loss of liberty is sure to follow. > > GCS Griffin -- Pelaran Alliance -- TFS Guardian (book) > > > Maranatha! <>< > John McKown > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- Once a government places vague notions of public safety and security above the preservation of freedom, a general loss of liberty is sure to follow. GCS Griffin -- Pelaran Alliance -- TFS Guardian (book) Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
