It would be helpful to see the code (human and object) for both the EX and MVC instruction. From your description, I guess the EX uses R15 to keep the length. But I don't know that the EX is actually pointing to the MVC nor what registers the MVC is using. Remember that it is possible to get a S0C4-4 even in key 0 if the storage is marked as READ-ONLY in the page table for the page in question. I don't know if CICS/TS 4.2 does this for things loaded into R[E]DSA or not. We don't run 4.2.
On Tue, Jan 15, 2013 at 3:17 PM, Richard Verville <[email protected]> wrote: > I have this strange problem with CICS TS 4.2 (trial version) which has NOT > been happening with other TS 4.2 clients. I need to hook in a CICS program > (12 bytes) to get control in my routine. In order to do so, my prog issues a > LOAD (SVC 08) to get the address and issue a SVC (I coded) to actually zap > the 12 bytes. The loaded routine is in private storage SUBPOOL 252 KEY-0 > storage. My SVC is running KEY 0. The starting address I want to modify is > 0001F080 for 12 bytes. I'm getting the exception on 0001F004.The SVC is doing > an EXECUTE instruction which points to a MVC instruction. I don't understand > why I'm getting this as this runs at many other sites w/o problems. Any ideas > anyone ? Richard > > MVS Registers and PSW. > > PSW: 070C2000 80000000 00000000 00D4DC6E Instruction Length: 4 > Interrupt Code: 04 > Exception Address: 00000000_0001F004 > > Execution key at Program Check/Abend: 0 Addressing Mode: 31 > > Space at Program Check/Abend: Basespace > > Breaking Event Address: 00000000_00D4DB86 > - offset UNKNOWN in module UNKNOWN > > 64-BIT REGISTERS 0-15 > > GPR 0-1 00000000_8001E150 00000000_0005DC58 > GPR 2-3 00000000_0005DC58 00000000_0001F0F8 > GPR 4-5 00000000_001CAB60 00000000_0000000B > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
