From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 101deb,db15d2f6cb54705a X-Google-Attributes: gid101deb,public X-Google-Thread: 1073c2,db15d2f6cb54705a X-Google-Attributes: gid1073c2,public X-Google-Thread: fdb77,db15d2f6cb54705a X-Google-Attributes: gidfdb77,public X-Google-Thread: 10a146,db15d2f6cb54705a X-Google-Attributes: gid10a146,public X-Google-Thread: 103376,db15d2f6cb54705a X-Google-Attributes: gid103376,public X-Google-Thread: f8131,e2c196a85919d5cc X-Google-Attributes: gidf8131,public X-Google-ArrivalTime: 2001-06-28 23:41:49 PST Path: archiver1.google.com!newsfeed.google.com!sn-xit-02!supernews.com!isdnet!sunqbc.risq.qc.ca!newsfeed.mathworks.com!panix!news.panix.com!not-for-mail From: Randy Hudson Newsgroups: comp.lang.ada,comp.lang.java.programmer,comp.lang.pl1,comp.lang.vrml,comp.lang.java.advocacy,comp.lang.asm370 Subject: Re: S/390 (was Market pressures for more reliable software) Date: 29 Jun 2001 06:41:47 GMT Organization: PANIX Public Access Internet and UNIX, NYC Distribution: inet Message-ID: <9hh7vb$gsg$1@news.panix.com> References: <9hght3$c3s$1@hermes.nz.eds.com> NNTP-Posting-Host: panix6.panix.com X-Trace: news.panix.com 993796907 17296 166.84.0.231 (29 Jun 2001 06:41:47 GMT) X-Complaints-To: abuse@panix.com NNTP-Posting-Date: 29 Jun 2001 06:41:47 GMT X-Newsreader: trn 4.0-test74 (May 26, 2000) Originator: ime@panix.com (Randy Hudson) Xref: archiver1.google.com comp.lang.ada:9235 comp.lang.java.programmer:79525 comp.lang.pl1:1165 comp.lang.vrml:3945 comp.lang.java.advocacy:22244 comp.lang.asm370:1083 Date: 2001-06-29T06:41:47+00:00 List-Id: In article <9hght3$c3s$1@hermes.nz.eds.com>, John Homes wrote: > Some of us are still using it.. Before I used BALR, I used an even odder subroutine call, JMS on DEC's PDP-8 series (it was the same on the PDP-5, but, thankfully, I'm not old enough to have programmed that one). The PAL-III assembler didn't directly support reloation (object files were only loadable to the addresses they were assembled to), but we wrote some helper routines that we could call as a subroutine, which would update the relocation constants of the page from which it was called, and then return to that page; the JMS instruction (it stored the program counter at the pointed-to location, then jumped to the following instruction) was central to that routine. Modern computer architecture theorists would use the PDP-8 as an example of how not to design a CPU. SABR came out soon after that, which had its own methods for creating relocatable object code for the PDP-8. -- Randy Hudson