Type of Event
Unstack 10BLOK or TROBLOK NCP BTU (See Note 31 Spinning on lock SIGP issued Clear Channel issued IUCV Communication SNA CCS DIAGNOSE X'80' Start I/O Fast Release Simulated I/O Interrupt CLEAR I/O Identification Module Code (hexadecimal) (See Note 11 ------- DMKDSP 10 Address of VMBLOK DMKRNH 11 DMKLOK 12 Address of VMBLOK DMKEXT 13 Return Address DMKVSI 14 DMKIUA 15
DMKVCV 16
DMKMHC 17 DMKIOS 18 DMKIOT 19 >A I R,,,,"", '0' "'0 "" DMKIOS 1B
Format of Traco Table Entry Value of VMDSTAT, VMOSTAT, and VMOSTAT Address of VMBLOK Address of 10BLOK or Virtual CSW Usage varies by function code
12 Interrupt fleturn Address
Lockword Contents Status of Condition
Code = 1
Address of IUCVBLOK (See "IUCV Trace Table Formats" for detailsl HCBLOK Address
Address of 10BLOK Address of either DMKDID or DMKACR
in GR 12 at entry
Address of 10BLOK MSSF Command Word
CAW CSW CAW MSFBLOK Address
12
For CC = 1, CSW + 4
otherwise this field is
12 not used
For CC = 1, CSW + 4
otherwise this field is
12 not used.
15
Notes: 1. If the installation is running in attached processor mode, the identification code will be OR'd with an X'40' if the activity occurred on the attached processor. If the installation is running ECPS, the identification code is OR'd with an X'80' if the activity occurred in microcode.
2. If the interrupt code (bytes 6 and 71 is OC, the contents of GR 14 are displayed. For all other interrupt codes, the contents of GR 15 are displayed. 3. Bytes 2 through 15 of a code 11 trace record represent a Basic Transmission Unit, sent or received by a 3704/3705. If CONSYSR/CONEXTR are zero, the
BTU was transmitted to the 3704/3705. If they are non-zero, the BTU was received. If CONTCMD equals x'noo', this is an unsolicited BTU response.
Figure 67 (Part 2 of 2). CP Trace Table Entries
Introduction to Debugging 505
Abend Dumps
There are three kinds of abnormal termination dumps possible when using CPo If
the problem program cannot continue, it terminates and in some cases attempts to
issue a dump. Likewise, if the operating system for your virtual machine cannot
continue, it terminates and, in some cases, attempts to issue a dump. In the VM/SP environment, the problem program dump always goes to the virtual
printer. Depending on installation operating procedures, the virtual machine operĀ­
ating system dump may also go to the virtual printer. A CLOSE must be issued to
the virtual printer to have either dump print on the real printer.
The third type of dump occurs when the CP system cannot continue. The CP abnormal termination dumps can be directed to a printer or tape or be dynamically
allocated to DASD. If the dump is directed to a tape, the dumped data must fit on
one reel of tape. Multiple tape volumes are not supported by VM/SP. The historĀ­
ical data on the tape is in print line format and can be processed by user-created
programs or via CMS commands. Specify the output device for CP abend dumps
with the CP SET DUMP command. Refer the VM / SP Operator's Guide for the
format of the SET DUMP command.
How to Print a CP Abend Dunlp from Tape
Reading CP Abend Dumps
When the CP abend dump is sent to a tape, the records are 131 characters long,
unblocked, and contain carriage control characters.
To print the tape, first make sure the tape drive is attached to your system. Next,
define the printer and tape file.
FILEDEF ddname1 PRINTER (RECFM FM LRECL 131)
FILEDEF ddname2 {TAP2} (DEN 1600 RECFM U LRECL 132) {TAP1} Then use the MOVEFILE command to print the tape:
MOVEFILE ddname2 ddname1
Two types of printed dumps occur when CP abnormally ends, depending upon the
options specified in the CP SET DUMP command. When the dump is directed to a
direct access device, IPCS (Interactive Problom Control Service) must be used to
format and print the dump. IPCS commands format and print: ā€¢ Control blocks
General registers
Floating-point registers
Control registers TOD (Time-of-Day) Clock
Processor Timer
Storage
If in attached processor or multiprocessor mode, formats and prints both PSAs' storage
Storage is printed in hexadecimal notation, eight words to the line, with EBCDIC
translation at the right. The hexadecimal address of the first byte printed on each
line is indicated at the left. 506 VM/SP System Programmer's Guide
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