Re: Question on the SLIP command
Hi Peter, This works: STR14,0(,R13) JAS R14,*+4+8 DCC'$SL$',Y(x,y) L R14,0(,R13) and I can do DA=(14R?,EQ,5BE2D35B) Where x is a module's identification number and y is the nth macro expansion for my SLIP trigger macro. What I wanted to do was: J *+4+8 DCC'$SL$',Y(x,y) and I can do something like DA=(PSW?,EQ,5BE2D35B) I was hoping to use the PSW in order to preserve all of my registers. Apparently, I am not going to be able to do what I want to do. Thanks for the information. Chuck On Wed, Jun 21, 2023 at 7:24 AM Peter Relson wrote: > As you have observed, there is no support for "PSW". > > I'm curious what SLIP trap you're setting that would let you even know to > look at "+4". You'd have to know that the instruction itself was a branch > and that it was one of "your" branches. If you really could tell that it > was one of your branches, and if you have a reg that you can afford to use > consistently perhaps use BRAS instead of J and then you could indirect off > of the value in the reg. > > If this is a PER-SB (or IF) trap, and you know the address is below 2G, > field LCCAPERA contains the address of the instruction that took the PER > interrupt. LCCAPPSW contains the resulting PSW (so LCCAPPSW+4 contains the > address, but may have bit 0 on) > > The LCCA is pointed to by PSA location x'210'. > > LCCXLCCAPERA and LCCXPPSW16_2 contain the 8-byte address and 16-byte PSW > analogs. > > With use of an expression using indirection starting at x'210' and the EQ > or EQA comparand you might be able to do something. > > Peter Relson > z/OS Core Technology Design > > > -- > 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
Re: Question on the SLIP command
As you have observed, there is no support for "PSW". I'm curious what SLIP trap you're setting that would let you even know to look at "+4". You'd have to know that the instruction itself was a branch and that it was one of "your" branches. If you really could tell that it was one of your branches, and if you have a reg that you can afford to use consistently perhaps use BRAS instead of J and then you could indirect off of the value in the reg. If this is a PER-SB (or IF) trap, and you know the address is below 2G, field LCCAPERA contains the address of the instruction that took the PER interrupt. LCCAPPSW contains the resulting PSW (so LCCAPPSW+4 contains the address, but may have bit 0 on) The LCCA is pointed to by PSA location x'210'. LCCXLCCAPERA and LCCXPPSW16_2 contain the 8-byte address and 16-byte PSW analogs. With use of an expression using indirection starting at x'210' and the EQ or EQA comparand you might be able to do something. Peter Relson z/OS Core Technology Design -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Question on the SLIP command
Hi Eric, I have a macro that generates a code sequence like this: J*+4+6 DCC'$SL$,Y(x,y) x and y are "footprint" type fields. The x represents the module identifier, 1, 2, 3, etc and y represents the specific macro expansion, 1, 2, 3, etc. The idea being when the PSW+4 points to the specific C'$SL$,Y(x,y) combination, trigger the SLIP. I tried using the DA=(..) parameter and when I coded what I hoped would work, I used PSW like I would have used, for instance, 2R, and the SLIP parser rejected it. Chuck On Tue, Jun 20, 2023 at 1:50 PM Eric D Rossman wrote: > Normally, you would use the RANGE= option to have the SLIP hit on certain > PSWs. Are you trying to see if a particular instruction is present at the > PSW? > > Eric Rossman > > -Original Message- > From: IBM Mainframe Discussion List On Behalf > Of Charles Hardee > Sent: Tuesday, June 20, 2023 1:40 PM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: [EXTERNAL] Question on the SLIP command > > Hello All, > > I have a question regarding the SLIP command. > > In my DA= parameter I have used things like 2r? to reference register 2, > etc. > Is there a symbol for the PSW? > I have tried DA=(PSW?+0,EQ,*myvalue*) and it tells me the DA parm is bad. > > Thanks, > Chuck > > -- > 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
Re: Question on the SLIP command
Normally, you would use the RANGE= option to have the SLIP hit on certain PSWs. Are you trying to see if a particular instruction is present at the PSW? Eric Rossman -Original Message- From: IBM Mainframe Discussion List On Behalf Of Charles Hardee Sent: Tuesday, June 20, 2023 1:40 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: [EXTERNAL] Question on the SLIP command Hello All, I have a question regarding the SLIP command. In my DA= parameter I have used things like 2r? to reference register 2, etc. Is there a symbol for the PSW? I have tried DA=(PSW?+0,EQ,*myvalue*) and it tells me the DA parm is bad. Thanks, Chuck -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Question on the SLIP command
Hello All, I have a question regarding the SLIP command. In my DA= parameter I have used things like 2r? to reference register 2, etc. Is there a symbol for the PSW? I have tried DA=(PSW?+0,EQ,*myvalue*) and it tells me the DA parm is bad. Thanks, Chuck -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
