TTSBK Back to Index page
 
Prolog 
Control Block Contents 
   TTSBK DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.


  TTSBK Prolog Top of page
 
 NAME       : HCPTTSBK
 DESCRIPTION: TRACE TABLE SAVE ENTRY FORMAT
 DSECT      : TTSBK
 FUNCTION   :
              THIS CONTROL BLOCK DEFINES THE FORMAT OF A 28-BYTE
              CP TRACE TABLE ENTRY, SAVED ONTO TAPE BY HSERV AND
              USED BY DVF FOR TRACE SERVICE TOOLS.
              THIS CONTROL BLOCK IS IDENTICAL TO THE FORMAT OF
              THE HARDWARE TRACE ENTRIES, EXCEPT THAT THE FIRST
              FULLWORD HAS BEEN REMOVED AND THE ID OF THE PRO-
              CESSOR GENERATING THE TRACE ENTRY HAS BEEN INCLUDED
              THE TRACE ENTRY HAS BEEN INCLUDED.
              IF THIS CONTROL BLOCK IS CHANGED, THE TTEBK MUST BE
              VERIFIED TO SEE IF THE SAME CHANGE EXISTS THERE.
 LOCATED BY :
              WORK REGISTERS IN HCPTSM (SAVES THE TRACE ENTRIES)
 CREATED BY :
              NOT APPLICABLE.  DSECT DEFINES FORMAT USED BY TRACE
              INSTRUCTION.
 DELETED BY :
              NOT APPLICABLE.
 RELOCATION CONSIDERATIONS : None
 
 
  TTSBK Control Block Content Top of page
 

 TTSBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure TTSBK TRACE TABLE SAVE ENTRY FORMAT 0000 0 Bitstring 4 TTSTODCK LAST 4 BYTES OF TOD CLOCK 0004 4 Bitstring 1 TTSTYPE (0) Trace entry type 1... .... TTSTRACG X'80' TTSTRACG First half of TRACG entry .... .... TTSTRACE X'00' TTSTRACE Entire TRACE entry 0004 4 Bitstring 2 TTSCPUID ID OF THE PROCESSOR GENERATING THIS TRACE INSTRUCTION 0006 6 Bitstring 2 TTSCID TRACE ENTRY ID (IE 0A00=RUN USER) 0008 8 Signed 4 TTSDATA0 FIRST DATA FIELD PASSED (RX) 000C 12 Signed 4 TTSDATA1 SECOND DATA FIELD PASSED (RX+1) 0010 16 Signed 4 TTSDATA2 THIRD DATA FIELD PASSED (RX+2) 0014 20 Signed 4 TTSDATA3 FOURTH DATA FIELD PASSED (RX+3) 0018 24 Signed 4 TTSDATA4 FIFTH DATA FIELD PASSED (RX+4) 00000004 TTSSIZE (*-TTSBK+7)/8 :SIZE OF BLOCK IN DOUBLE WORDS 0000001C TTSLEN (*-TTSBK) :LENGTH OF BLOCK IN BYTES THE FOLLOWING IS A REDEFINITION OF THE FIRST TWO DATA AREAS (TTSDATA0,1) IS USED BY THE COMMUNICA- ENTRY 'FFCC'. THIS ENTRY IS ONLY USED BY TRACE SERVICE TOOLS (VIA TRSAVE), IT WILL NOT APPEAR IN THE SYSTEM TRACE TABLES. IT'S PURPOSE IS TO PROVIDE A FULL TOD CLOCK VALUE WHENEVER THE HIGH ORDER 2 FULLWORDS CHANGE. IT IS USED BY DVF TO FORMAT A COMPLETE TOD. 0008 8 Dbl-Word 8 TTSTODCM FULL 8-BYTE TOD ENTRY FOR COMMUNICATION TO DVF
 
 
  TTSBK Storage Layout Top of page
 
          
*** TTSBK - TRACE TABLE SAVE ENTRY FORMAT
*
*     +---------------------------+-------------+-------------+
*   0 |         TTSTODCK          |  TTSCPUID   |   TTSCID    |
*     +---------------------------+-------------+-------------+
*   8 |         TTSDATA0          |         TTSDATA1          |
*     +---------------------------+---------------------------+
*  10 |         TTSDATA2          |         TTSDATA3          |
*     +---------------------------+---------------------------+
*  18 |         TTSDATA4          | 1C
*     +---------------------------+
*
*** TTSBK - TRACE TABLE SAVE ENTRY FORMAT
          
*** Overlay for TTSDATA0 in TTSBK
*
*     +-------------------------------------------------------+
*   8 |                       TTSTODCM                        |
*     +-------------------------------------------------------+
*  10
*
*** Overlay for TTSDATA0 in TTSBK
 
 
  TTSBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
TTSCID         0006
TTSCPUID       0004
TTSDATA0       0008
TTSDATA1       000C
TTSDATA2       0010
TTSDATA3       0014
TTSDATA4       0018
TTSLEN         0018 0000001C
TTSSIZE        0018 00000004
TTSTODCK       0000
TTSTODCM       0008
TTSTRACE       0004 00
TTSTRACG       0004 80
TTSTYPE        0004
 
This information is based on z/VM 7.1.0 Last updated on 22 Jun 2018 at 11:53:29 EDT.
Copyright IBM Corporation, 1990, 2018