FTPBK Back to Index page
 
Prolog 
Control Block Contents 
   FTPBK 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.


  FTPBK Prolog Top of page
 
 NAME       : HCPFTPBK
 DESCRIPTION: FOOT-PRINT BLOCK
 DSECT      : FTPBK
 FUNCTION   : PROVIDE FOOT-PRINTING OF THE RECOVERY
              PROCESS FOR SUBSEQUENT DEBUGGING
 LOCATED BY : HCPWRKFP IS THE ANCHOR FOR THIS BLOCK.
 CREATED BY : THE ASSEMBLY OF HCPWRK.  THE
              FOOT-PRINT BLOCK ALWAYS REMAINS
              IN THE HOST CONTROL PROGRAM CRITICAL
              WORKAREA.  EACH OF THE FOLLOWING
              MODULES 'OWN' AN AREA IN FTPBK
              WHICH THEY USE FOR RECORDING :
              HCPVRRMS
              HCPMCWMD
              HCPWRP
              HCPDMP
              HCPCKP/HCPWRM
 DELETED BY : NONE, HOWEVER THE BLOCK IS CLEARED
              BY HCPWRP
 RELOCATION CONSIDERATIONS : None
 
 
  FTPBK Control Block Content Top of page
 

 FTPBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure FTPBK FOOT-PRINT BLOCK 0000 0 Dbl-Word 8 FTPVRWCD (8) Record user before a bounce 0040 64 Dbl-Word 8 * (8) Reserved for IBM use 0080 128 Dbl-Word 8 FTPVRTST (9) Restart user footprints 00C8 200 Dbl-Word 8 FTPVRRMS (8) TERMINATION MSG BUFFER STATUS 0108 264 Dbl-Word 8 FTPMCWMD (35) FINAL STATUS OF EACH CPU 0220 544 Dbl-Word 8 FTPWRP (6) System termination footprints 0250 592 Dbl-Word 8 FTPIST (2) Storage Initialization footprints 0260 608 Dbl-Word 8 FTPDMP (8) DUMP FOOTPRINTING 00000054 FTPGSVDW (*-FTPBK+7)/8 GSURV FOOTPRINT SIZE IN DBL-WORDS 02A0 672 Dbl-Word 8 * (16) Reserved for IBM use 0320 800 Dbl-Word 8 FTPCKWRM (8) CHECKPOINT/WARMSTART FOOTPRINTS 00000008 FTPCKWDW (*-FTPCKWRM+7)/8 FTPCKWRM SIZE IN DOUBLE-WORDS 0360 864 Dbl-Word 8 FTPBUFSZ TERM MESSAGE BUFFER SIZE 00000001 FTPBUFSL (*-FTPBUFSZ+7)/8 FTPBUFSZ IN DOUBLEWORDS 0000006D FTPSIZE (*-FTPBK+7)/8 FTPBK SIZE IN DOUBLE-WORDS 0108 264 Character 8 FTPMDNAM THE NAME 'HCPMCWMD' GOES HERE. 0110 272 Bitstring 1 FTPMDFF (0) INITIALIZE TO FF'S. (SEE FTPLEN2). 0110 272 Dbl-Word 8 FTPTOD (0) TIMESTAMP ON ENTRY TO HCPMCWMD. (ZEROS IF STORE-CLOCK FAILS.) 0110 272 Bitstring 1 * 0111 273 Bitstring 1 FTPTODB1 FIRST BYTE OF FOOTPRINT TOD FIELD 0112 274 Bitstring 1 * (6) 0118 280 Signed 4 FTPMDTAB (64) TABLE OF FOOTPRINTS, ONE ENTRY FOR EACH CPU. WE SUPPORT AS MANY AS 64 CPU'S. 00000108 FTPLEN2 *-FTPMDFF LENGTH TO BE INITIALIZED TO FF'S. 0218 536 Dbl-Word 8 FTPFENCE THIS 'FENCE' OF ZEROES AT THE END OF THE INITIALLY ALL-FF'S TABLE PREVENTS US FROM RUNNING OFF THE END IN THE EVENT OF A MESSED UP CHAIN OF PREFIX PAGES. 00000118 FTPLEN3 *-FTPMCWMD LENGTH OF AREA USED BY HCPMCWMD. 0118 280 Bitstring 1 FTPENTRY (0) 0118 280 Bitstring 1 FTPCPUAD CONTAINS CPUID IN STAP FORMAT, LOW ORDER BYTE ONLY. 0119 281 Bitstring 1 FTPMFLG1 1... .... FTPUNKWN X'80' FTPUNKWN CPU IS IN AN 'UNKNOWN' STATE (HCPSGPST COULD NOT COMMUNICATE WITH IT). .1.. .... FTPCPUON X'40' FTPCPUON CPU ASSOCIATED WITH THE PREFIX PAGE WAS ONLINE. (EXPECT IT TO BE OFFLINE AT TIMES SINCE PFX PAGE IS KEPT FOR 2 MINUTES AFTER VARY OFF.) ..1. .... FTPSTATX X'20' FTPSTATX THE STATE OF THE CPU HOLDING THE THE TERMINATION LOCK WAS NOT 'PFXAVAIL'. ...1 .... FTPSOFER X'10' FTPSOFER HCPMCWMD FOUND POSSIBLE SOFTWARE ERROR. .... 1... FTPHABEN X'08' FTPHABEN HAD ABEND ON THIS CPU (AS REPORTED BY THE PFXHABEN FLAG IN ITS PREFIX PAGE). .... .1.. FTPCKSTP X'04' FTPCKSTP CPU IS CHECK-STOPPED AND FIRST NOTICED DURING CURRENT INCIDENT (NOT A RE-DISCOVERY OF A CHECK-STOP HANDLED EARLIER). .... ..1. FTPMCHKX X'02' FTPMCHKX A MACHINE CHECK OCCURRED AND FOR SOME REASON THE MACHINE-CHECK FLIH NEVER FINISHED HANDLING IT. .... ...1 FTPBROAD X'01' FTPBROAD MACHINE CHECK IS ESSENTIALLY IDENTICAL TO AN EARLIER ONE AND IS REGARDED AS A 'BROADCAST' MACHINE CHECK. CAUTION: THE DATA IN THE BYTE BELOW IS SIMPLY COPIED FROM THE MCKBK AND MAY NOT APPLY TO THE CURRENT INCIDENT (ESPECIALLY IN THE CASE OF A CPU THAT IS NOT THE ONE HOLDING THE SYSTEM TERMINATION LOCK). IF NO ERROR WAS HANDLED ON (OR FOR) THIS CPU DURING THE CURRENT INCIDENT, THEN THESE FLAGS ARE SIMPLY LEFT OVER FROM A PREVIOUS INCIDENT. 011A 282 Bitstring 1 FTPMFLG2 1... .... FTPFSIE X'80' FTPFSIE WE WERE RUNNING SIE (PFXHSIE WAS SET). .1.. .... FTPFERCS X'40' FTPFERCS ERROR WAS CHECK-STOP, NOT MACHINE CHECK. ..1. .... FTPF2ND X'20' FTPF2ND A SECONDARY ERROR OCCURRED WHILE HANDLING A MACHINE CHECK. ...1 .... FTPF2CS X'10' FTPF2CS SECONDARY ERROR WAS A CHECK-STOP. .... 1... FTPFMCIC X'08' FTPFMCIC INVALID MCIC (REQUIRED BITS MISSING). .... .1.. FTPFABND X'04' FTPFABND POSSIBLE SOFTWARE ERROR ENCOUNTERED. WHERE WE CANNOT ISSUE HCPABEND, WE SET THIS FLAG, THEN TERMINATE. .... ..1. FTPFATSK X'02' FTPFATSK ATTEMPTED TO RUN INTERRUPTED SYSTEM TASK TO COMPLETION. .... ...1 FTPFXTSK X'01' FTPFXTSK ATTEMPT TO COMPLETE INTERRUPTED SYSTEM TASK WAS SUCCESSFUL. CAUTION: THE DATA IN THE BYTE BELOW IS SIMPLY COPIED FROM THE MCKBK AND MAY NOT APPLY TO THE CURRENT INCIDENT (ESPECIALLY IN THE CASE OF A CPU THAT IS NOT THE ONE HOLDING THE SYSTEM TERMINATION LOCK). IF NO ERROR WAS HANDLED ON (OR FOR) THIS CPU DURING THE CURRENT INCIDENT, THEN THESE FLAGS ARE SIMPLY LEFT OVER FROM A PREVIOUS INCIDENT. NOTES : THE MCKFDIE2 AND MCKFIPLI FLAGS WILL NEVER BE SET IN THE BYTE BELOW SINCE THE BYTE BELOW IS COPIED FROM THE FLIH MCKBK, NOT THE SLIH MCKBK. 011B 283 Bitstring 1 FTPMFLG3 1... .... MCKFEMER X'80' MCKFEMER EMERGENCY HOST TERMINATION REQUIRED (AND OTHER FLAGS MAY BE MEANINGLESS). .1.. .... MCKFNOTM X'40' MCKFNOTM HOST TERMINATION NOT REQUIRED BY THE MACHINE-CHECK FLIH. ..1. .... MCKFDIE1 X'20' MCKFDIE1 HOST TERMINATION WAS REQUIRED BY THE MACHINE-CHECK FLIH. ...1 .... MCKFDIE2 X'10' MCKFDIE2 HOST TERMINATION WAS REQUIRED BY THE MACHINE-CHECK SLIH. .... 1... MCKFIPL X'08' MCKFIPL SOFT-RE-IPL AFTER TERMINATE DISALLOWED. .... .1.. MCKFIPLI X'04' MCKFIPLI SOFT-RE-IPL DISALLOWED BY IO SUB-SYSTEM. 00000004 FTPELEN *-FTPENTRY LENGTH OF A SINGLE ENTRY IN TABLE. 011C 284 Bitstring 1 FTPNEXTE (0) START OF NEXT ENTRY OF THE TABLE. 0320 800 Dbl-Word 8 FTPWRMST WARM START TIME 00000008 FTPWRMSL *-FTPCKWRM WARM START TIME LENGTH 0328 808 Dbl-Word 8 FTPWRMCT WARM START COMPLETED TIME 00000008 FTPWRMCL *-FTPWRMCT WARM START COMPLETED TIME LENGTH 0000 0 Character 3 FTPRCDFP Entered HCPWRP 0003 3 Bitstring 1 * Reserved for IBM use 0004 4 Signed 4 * Reserved for IBM use 0008 8 Bitstring 3 * Reserved for IBM use 000B 11 Bitstring 1 FTPUNLOK V=F Area is unlocked 0080 128 Character 3 FTPTSTFP Entered HCPISU 0083 131 Bitstring 1 FTPZMIVI CALL HCPZMIVI TO VERIFY STORAGE INITIALIZATION FOR I/O INTERPRETATION 0084 132 Signed 4 * (2) Reserved for IBM use 008C 140 Bitstring 1 * Reserved for IBM use 008D 141 Bitstring 1 FTPTSTCM VRTST DONE, BOUNCE OVER 00C8 200 Character 3 FTPRMSFP ENTERED HCPVRRMS ALREADY 00CB 203 Bitstring 1 FTPMSGST STATUS OF MESSAGE BUFFER 00CC 204 Signed 4 FTPMSGCT COUNT OF MESSAGES IN BUFFER 00D0 208 Signed 4 FTPMSGLN LENGTH OF MESSAGE BUFFER USED 0220 544 Character 3 FTPWRPFP HCPWRP FOOTPRINT 0223 547 Bitstring 1 * RESERVED FOR ALIGNMENT 0224 548 Signed 4 FTPWRPIN HCPWRPUP INPUT PARAMETERS 0228 552 Bitstring 1 FTPWRPDS DUMP STATUS .... ..1. FTPDMPIP X'02' FTPDMPIP DUMP IN PROGRESS FLAG .... ...1 FTPDMPFI X'01' FTPDMPFI DUMP TAKEN FLAG 0229 553 Bitstring 1 FTPWRPTS TERMINATION STATUS .... .... FTPTRMIP X'00' FTPTRMIP TERMINATION IN PROGRESS .... ...1 FTPTRMFI X'01' FTPTRMFI TERMINATION COMPLETE FLAG .... ..1. FTPTRMER X'02' FTPTRMER TERMINATION UNSUCCESSFUL 022A 554 Bitstring 1 * RESERVED FOR IBM USE 022B 555 Bitstring 1 FTPWRPER ERROR STATUS .... ...1 FTPPRGCK X'01' FTPPRGCK PROGRAM CHECK CAUSED WAIT 921 .... ..1. FTPSVCIN X'02' FTPSVCIN SVC INTERRUPT CAUSED WAIT 921 022C 556 Bitstring 1 FTPNEWNC STATUS OF TRANSFERRING CONTROL TO A NEW NUCLEUS .... ...1 FTPIPLRD X'01' IPL RECORD OF NEW NUCLEUS READ .... ..1. FTPNEWRD X'02' HCPLOD OF NEW NUCLEUS WAS READ .... ..11 FTPTRANS X'03' TRANSFER OF CONTROL TO NEW NUCLEUS ATTEMPTED 0250 592 Character 3 FTPISTFP HCPWRP footprint 0253 595 Bitstring 1 FTPISTST HCPIST status footprint 0360 864 Signed 4 FTPMSGSZ LENGTH OF AVAILABLE MESSAGE BUFFER
 
 
  FTPBK Storage Layout Top of page
 
 
*** FTPBK - FOOT-PRINT BLOCK
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       FTPVRWCD                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  40 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  80 |                                                       |
*     =                       FTPVRTST                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  C8 |                                                       |
*     =                       FTPVRRMS                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 108 |                                                       |
*     =                       FTPMCWMD                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 220 |                                                       |
*     =                        FTPWRP                         =
*     |                                                       |
*     +-------------------------------------------------------+
* 250 |                        FTPIST                         |
*     |                                                       |
*     +-------------------------------------------------------+
* 260 |                                                       |
*     =                        FTPDMP                         =
*     |                                                       |
*     +-------------------------------------------------------+
* 2A0 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
* 320 |                                                       |
*     =                       FTPCKWRM                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 360 |                       FTPBUFSZ                        |
*     +-------------------------------------------------------+
* 368
*
*** FTPBK - FOOT-PRINT BLOCK
 
*** Overlay for FTPMCWMD in FTPBK
*
*     +-------------------------------------------------------+
* 108 |                       FTPMDNAM                        |
*     +------+------+-----------------------------------------+
* 110 |//////|:TODB1|/////////////////////////////////////////|
*     +------+------+-----------------------------------------+
* 118 |                                                       |
*     =                       FTPMDTAB                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 218 |                       FTPFENCE                        |
*     +-------------------------------------------------------+
* 220
*
*** Overlay for FTPMCWMD in FTPBK
 
*** Overlay for FTPMDTAB in FTPBK
*
*     +------+------+------+------+
* 118 |:CPUAD|:MFLG1|:MFLG2|:MFLG3|
*     +------+------+------+------+
*
*** Overlay for FTPMDTAB in FTPBK
 
*** Overlay for FTPCKWRM in FTPBK
*
*     +-------------------------------------------------------+
* 320 |                       FTPWRMST                        |
*     +-------------------------------------------------------+
* 328 |                       FTPWRMCT                        |
*     +-------------------------------------------------------+
* 330
*
*** Overlay for FTPCKWRM in FTPBK
 
*** Overlay for FTPVRWCD in FTPBK
*
*     +--------------------+------+---------------------------+
*   0 |     FTPRCDFP       |//////|///////////////////////////|
*     +--------------------+------+---------------------------+
*   8 |////////////////////|:UNLOK| C
*     +--------------------+------+
*
*** Overlay for FTPVRWCD in FTPBK
 
*** Overlay for FTPVRTST in FTPBK
*
*     +--------------------+------+---------------------------+
*  80 |     FTPTSTFP       |:ZMIVI|///////////////////////////|
*     +--------------------+------+------+------+-------------+
*  88 |///////////////////////////|//////|:TSTCM| 8E
*     +---------------------------+------+------+
*
*** Overlay for FTPVRTST in FTPBK
 
*** Overlay for FTPVRRMS in FTPBK
*
*     +--------------------+------+---------------------------+
*  C8 |     FTPRMSFP       |:MSGST|         FTPMSGCT          |
*     +--------------------+------+---------------------------+
*  D0 |         FTPMSGLN          | D4
*     +---------------------------+
*
*** Overlay for FTPVRRMS in FTPBK
 
*** Overlay for FTPWRP in FTPBK
*
*     +--------------------+------+---------------------------+
* 220 |     FTPWRPFP       |//////|         FTPWRPIN          |
*     +------+------+------+------+------+--------------------+
* 228 |:WRPDS|:WRPTS|//////|:WRPER|:NEWNC| 22D
*     +------+------+------+------+------+
*
*** Overlay for FTPWRP in FTPBK
 
*** Overlay for FTPIST in FTPBK
*
*     +--------------------+------+
* 250 |     FTPISTFP       |:ISTST| 254
*     +--------------------+------+
*
*** Overlay for FTPIST in FTPBK
 
*** Overlay for FTPBUFSZ in FTPBK
*
*     +---------------------------+
* 360 |         FTPMSGSZ          | 364
*     +---------------------------+
*
*** Overlay for FTPBUFSZ in FTPBK
 
 
  FTPBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
FTPBROAD       0119 01
FTPBUFSL       0360 00000001
FTPBUFSZ       0360
FTPCKSTP       0119 04
FTPCKWDW       0320 00000008
FTPCKWRM       0320
FTPCPUAD       0118
FTPCPUON       0119 40
FTPDMP         0260
FTPDMPFI       0228 01
FTPDMPIP       0228 02
FTPELEN        011B 00000004
FTPENTRY       0118
FTPFABND       011A 04
FTPFATSK       011A 02
FTPFENCE       0218
FTPFERCS       011A 40
FTPFMCIC       011A 08
FTPFSIE        011A 80
FTPFXTSK       011A 01
FTPF2CS        011A 10
FTPF2ND        011A 20
FTPGSVDW       0260 00000054
FTPHABEN       0119 08
FTPIPLRD       022C 01
FTPIST         0250
FTPISTFP       0250
FTPISTST       0253
FTPLEN2        0118 00000108
FTPLEN3        0218 00000118
FTPMCHKX       0119 02
FTPMCWMD       0108
FTPMDFF        0110
FTPMDNAM       0108
FTPMDTAB       0118
FTPMFLG1       0119
FTPMFLG2       011A
FTPMFLG3       011B
FTPMSGCT       00CC
FTPMSGLN       00D0
FTPMSGST       00CB
FTPMSGSZ       0360
FTPNEWNC       022C
FTPNEWRD       022C 02
FTPNEXTE       011C
FTPPRGCK       022B 01
FTPRCDFP       0000
FTPRMSFP       00C8
FTPSIZE        0360 0000006D
FTPSOFER       0119 10
FTPSTATX       0119 20
FTPSVCIN       022B 02
FTPTOD         0110
FTPTODB1       0111
FTPTRANS       022C 03
FTPTRMER       0229 02
FTPTRMFI       0229 01
FTPTRMIP       0229 00
FTPTSTCM       008D
FTPTSTFP       0080
FTPUNKWN       0119 80
FTPUNLOK       000B
FTPVRRMS       00C8
FTPVRTST       0080
FTPVRWCD       0000
FTPWRMCL       0328 00000008
FTPWRMCT       0328
FTPWRMSL       0320 00000008
FTPWRMST       0320
FTPWRP         0220
FTPWRPDS       0228
FTPWRPER       022B
FTPWRPFP       0220
FTPWRPIN       0224
FTPWRPTS       0229
FTPZMIVI       0083
MCKFDIE1       011B 20
MCKFDIE2       011B 10
MCKFEMER       011B 80
MCKFIPL        011B 08
MCKFIPLI       011B 04
MCKFNOTM       011B 40
 
This information is based on z/VM 6.4.0 Last updated on 24 Aug 2016 at 09:25:10 EDT.
Copyright IBM Corporation, 1990, 2016