No level was assumed. It was just an example written on the spur of the moment without much thought or review. As long as the code is being critiqued, what's with the BALR? BAS, BASR or BASSM are much more appropriate for today's environment.
Chris Blaicher Principal Software Engineer, Software Development Syncsort Incorporated 50 Tice Boulevard, Woodcliff Lake, NJ 07677 P: 201-930-8260 | M: 512-627-3803 E: cblaic...@syncsort.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Shmuel Metz (Seymour J.) Sent: Thursday, May 09, 2013 7:48 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Return codes In <a6cf87cbc0b60a459cb79af044a096db2227dc9...@mailccr.us.syncsort.com>, on 05/08/2013 at 08:34 PM, "Blaicher, Christopher Y." <cblaic...@syncsort.com> said: >Item of note, unless you are working with all your own code, you have >to validate the value in R15 before just using it to branch into a >branch table with tests that the value is within limits and the lower >2 bits are not on. Such as: What architecture level are you assuming? > BALR r14,r15 Call your routine > LR R14,R15 DON'T DISTROY R15 > CHI R15,16 CHECK HIGH LIMIT > JH BADRETURN TOO BIG? DIE WITH MESSAGE > N R14,=XL4'00000003' ANY STRAY BITS? > JNZ BADRETURN YES, DIE WITH MESSAGE > B *+4(R15) BRANCH ACCORDING TO RC BALR r14,r15 Call your routine CHI R15,16 CHECK HIGH LIMIT JH BADRETURN TOO BIG? DIE WITH MESSAGE TMLL R15,XL2'3' ANY STRAY BITS? JNZ BADRETURN YES, DIE WITH MESSAGE B *+4(R15) BRANCH ACCORDING TO RC -- Shmuel (Seymour J.) Metz, SysProg and JOAT Atid/2 <http://patriot.net/~shmuel> We don't care. We don't have to care, we're Congress. (S877: The Shut up and Eat Your spam act of 2003) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ATTENTION: ----- The information contained in this message (including any files transmitted with this message) may contain proprietary, trade secret or other confidential and/or legally privileged information. Any pricing information contained in this message or in any files transmitted with this message is always confidential and cannot be shared with any third parties without prior written approval from Syncsort. This message is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any use, disclosure, copying or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or Syncsort and destroy all copies of this message in your possession, custody or control. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
