Re: Application-mode use of TRAPping instructions

2018-06-21 Thread David Cole
Bernd Oppolzer wrote: At a site where I was working some years ago we had a site specific debugging tool which inserted break points into test objects (= load modules) by changing certain instruction's opcodes to hex zero, then catching the resulting 0C1 interrupts and this way tracking the

Re: Application-mode use of TRAPping instructions

2018-06-20 Thread Bernd Oppolzer
Am 19.06.2018 um 22:18 schrieb Farley, Peter x23353: The recent discussion about the ability (or not) of setting R14 values in dbx at a break point while debugging brought me back to an old and (for me) somewhat sore subject. The z/Architecture hardware designers graced us with TRAP and TRAP4

Re: Application-mode use of TRAPping instructions

2018-06-20 Thread Seymour J Metz
metz3 From: IBM Mainframe Discussion List on behalf of Farley, Peter x23353 Sent: Tuesday, June 19, 2018 4:18 PM To: IBM-MAIN@listserv.ua.edu Subject: Application-mode use of TRAPping instructions The recent discussion about the ability (or not) of setting R14 values in db

Re: Application-mode use of TRAPping instructions

2018-06-20 Thread John McKown
On Wed, Jun 20, 2018 at 8:59 AM Don Poitras wrote: > In article u...@mail.gmail.com> you wrote: > > On Tue, Jun 19, 2018 at 3:18 PM Farley, Peter x23353 < > > peter.far...@broadridge.com> wrote: > > > The recent discussion about the ability (or not) of setting R14 values > in > > > dbx at a brea

Re: Application-mode use of TRAPping instructions

2018-06-20 Thread Don Poitras
In article you wrote: > On Tue, Jun 19, 2018 at 3:18 PM Farley, Peter x23353 < > peter.far...@broadridge.com> wrote: > > The recent discussion about the ability (or not) of setting R14 values in > > dbx at a break point while debugging brought me back to an old and (for me) > > somewhat sore subj

Re: Application-mode use of TRAPping instructions

2018-06-20 Thread John McKown
On Tue, Jun 19, 2018 at 3:18 PM Farley, Peter x23353 < peter.far...@broadridge.com> wrote: > The recent discussion about the ability (or not) of setting R14 values in > dbx at a break point while debugging brought me back to an old and (for me) > somewhat sore subject. > > The z/Architecture hardw

Application-mode use of TRAPping instructions

2018-06-19 Thread Farley, Peter x23353
The recent discussion about the ability (or not) of setting R14 values in dbx at a break point while debugging brought me back to an old and (for me) somewhat sore subject. The z/Architecture hardware designers graced us with TRAP and TRAP4 and then with compare-and-trap instructions in the har