Is the facility to check for the facility bits often present in load modules? I. E. a certain opcode or SVC call? Then hou could look at the bits being checked.
On Tue, Dec 8, 2020 at 6:11 PM Seymour J Metz <sme...@gmu.edu> wrote: > > Some new feature added new bit to, e.g., control registers, parameters, > tables. > > > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 > > ________________________________________ > From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of > Peter Van Dyke [pdvand...@gmail.com] > Sent: Tuesday, December 8, 2020 6:40 PM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: Determining required z/series hardware level - REVISED > > If there isn't a ready made solution available, the High Level Assembler > Toolkit has a disassembler utility which could provide the input to a new > tool that scans the assembler instructions and matches them to the hardware > level. The IBM File Manager 'View Load Module' or VLM function can also > disassemble CSECTs. VLM is also able to provide information such as the > compiler used to create a CSECT and the compiler options used such as the > ARCH setting. > > Regards, > Peter Van Dyke > HCL Software > > On Wed, 9 Dec 2020 at 07:27, Charles Mills <charl...@mcn.org> wrote: > > > "Version of the compiler" is not sufficient to answer "what hardware level > > is required?" For example, COBOL 6.3 lets you specify ARCH() 8, 9, 10, 11, > > 12 or 13. So the object code might run on a z10, or it might require a z15, > > or anything in-between. > > > > Charles > > > > > > -----Original Message----- > > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > > Behalf Of Farley, Peter x23353 > > Sent: Tuesday, December 8, 2020 3:17 PM > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: Re: Determining required z/series hardware level - REVISED > > > > It's not foolproof, but for both HLL's and assembler the COBANALZ program > > in > > CBT file 321 will give you (in the SUMMARY DD output) a pretty good guess > > at > > the compiler or assembler version that generated the code. From that you > > could extrapolate the minimum hardware level required based on the > > announcement letter for that release of each language's compiler. Crude, > > but possible, though COBANLZ does not handle "unbound object code", only > > executables (load module or P.O.). > > > > For HLL compilers that allow you to generate the pseudo-assembler > > equivalent > > of the compiled code, you can analyze the compiler listing for instruction > > uses, but if you only have executable code, obviously that is no help. > > > > For executable-only (no source or listing available) assembler, you would > > need to decode the executable into instructions and data (not trivial by > > any > > means) to build a list of instructions used. An instruction trace program > > like TRACE390 in CBT file 391 could help there, assuming you have the files > > and JCL needed to run the program once through the trace program. The > > trace > > output would provide you with a list of instructions executed to analyze > > for > > hardware level. The caveat there is that AFAIK CBT file 391 has not been > > updated in quite a while and lacks many of the newer z-architecture > > instructions, not least the whole suite of vector instructions. > > > > Running any kind of instruction trace has the caveat that not all > > instruction paths are guaranteed to be executed, and there could easily be > > instructions requiring a higher architecture level hiding in un-executed > > code. > > > > In general, if all you have is executable code, I would call this one of > > those "hard problems". > > > > Peter > > > > -----Original Message----- > > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf > > Of > > Mike Hochee > > Sent: Tuesday, December 8, 2020 5:50 PM > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: Re: Determining required z/series hardware level - REVISED > > > > Oops, got the hardware lvl for AHI wrong, so changed 'G9' to 'G10' > > > > Hi, > > > > I'm looking for a utility/program which is capable of reading a z/OS > > executable, whether an lmod or program object, or unbound object code, and > > examining it for hardware/architecture level compatibility. I'm not > > specifically referring to the ARCLVL of on the SYSSTATE macro, although I > > know there is some correspondence, but rather to the set of unprivileged > > instructions introduced at a particular hardware architecture levels. > > Apologies in advance for any imprecise/inaccurate terminology. > > > > For example, let's say I happen to know that the most recently introduced > > z/Series instruction used by a particular executable is the AHI > > instruction, > > then I would expect this utility/program to output 'G10', suggesting the > > minimum hardware architecture required to support execution. > > > > I understand things are not always black/white in this area and could be > > clouded by instruction facility requirements, etc.. > > > > Thanks in advance for any suggestions, guidance. > > > > Mike > > -- > > > > This message and any attachments are intended only for the use of the > > addressee and may contain information that is privileged and confidential. > > If the reader of the message is not the intended recipient or an authorized > > representative of the intended recipient, you are hereby notified that any > > dissemination of this communication is strictly prohibited. If you have > > received this communication in error, please notify us immediately by > > e-mail > > and delete the message and any attachments from your system. > > > > ---------------------------------------------------------------------- > > 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 > > > > ---------------------------------------------------------------------- > 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 -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
