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BB-4170H-SM
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sources/nspint.mac
There are 18 other files named nspint.mac in the archive. Click here to see a list.
;<4.MONITOR>NSPINT.MAC.60, 3-Jan-80 08:09:49, EDIT BY R.ACE
;UPDATE COPYRIGHT DATE
;<OSMAN.MON>NSPINT.MAC.1, 10-Sep-79 15:46:53, EDIT BY OSMAN
;TCO 4.2412 - Move definition of BUGHLTs, BUGCHKs, and BUGINFs to BUGS.MAC
;<4.MONITOR>NSPINT.MAC.58, 4-Mar-79 18:40:12, Edit by KONEN
;UPDATE COPYRIGHT FOR RELEASE 4
;<4.MONITOR>NSPINT.MAC.57, 21-Feb-79 21:47:04, EDIT BY KIRSCHEN
;ADD BUGINF FOR FREE SPACE EXHAUSTED CONDITION
;<4.MONITOR>NSPINT.MAC.56, 18-Feb-79 09:10:28, EDIT BY KIRSCHEN
;NSPINT.MAC.55 WAS EDIT TO FIX BACKGROUND TASK WAKEUP BUG
;<4.MONITOR>NSPINT.MAC.54, 15-Feb-79 16:43:47, EDIT BY ENGEL
;ADD CODE TO ALLOW ATS TO SET FLOW CONTROL
;<4.MONITOR>NSPINT.MAC.53, 8-Feb-79 17:53:41, EDIT BY MILLER
;IF CLZSDI FAILS, RELEASE LINK BLOCK ANYWAY
;<4.MONITOR>NSPINT.MAC.52, 30-Jan-79 09:38:01, EDIT BY KIRSCHEN
;CONVERT NSP ERROR CODE TO TOPS20 ERROR CODE IN XNSRLS
;<4.MONITOR>NSPINT.MAC.51, 30-Jan-79 09:04:20, EDIT BY KIRSCHEN
;ADD PERFORMANCE BREAKPOINT
;<4.MONITOR>NSPINT.MAC.50, 12-Jan-79 20:10:02, EDIT BY KIRSCHEN
;really don't clobber it this time !
;<4.MONITOR>NSPINT.MAC.49, 12-Jan-79 15:05:15, EDIT BY KIRSCHEN
;DO NOT CLOBBER SEGMENT SIZE IN XNSRSS
;<4.MONITOR>NSPINT.MAC.48, 3-Jan-79 15:35:56, EDIT BY KIRSCHEN
;RETURN ERROR CODE IN CLOSE FAILURE DUE TO BAD LINK ID
;<4.MONITOR>NSPINT.MAC.47, 28-Dec-78 14:38:50, EDIT BY KIRSCHEN
;REMOVE DEFENSIVE BUGCHK AT IFLUSH, NOT NEEDED
;<4.MONITOR>NSPINT.MAC.46, 9-Nov-78 08:58:08, EDIT BY KIRSCHEN
;ON FAILURE FROM CRTLNK, DELETE LINK BLOCK AND UNLOCK TREE
;<4.MONITOR>NSPINT.MAC.45, 8-Aug-78 16:16:28, Edit by KIRSCHEN
;RETURN FROM STORING BYTES IN XNSRIN
;<4.MONITOR>NSPINT.MAC.44, 8-Aug-78 16:14:17, Edit by KIRSCHEN
;INITIALIZE LLEOM EACH TIME THRU XNSOUT
;<4.MONITOR>NSPINT.MAC.43, 3-Aug-78 19:12:07, Edit by HALL
;ADD IFIW'S TO THE CLIDSP TABLE
;<4.MONITOR>NSPINT.MAC.42, 26-Jul-78 11:46:39, Edit by KIRSCHEN
;DO NOT LOCK LINK BLOCK AT START OF CLOSE CODE (DRIVER WILL LOCK IT)
;<4.MONITOR>NSPINT.MAC.41, 28-Jun-78 13:37:53, Edit by KIRSCHEN
;RETURN ERROR CODE ON SUPERFLUOUS BUFFER
;<4.MONITOR>NSPINT.MAC.40, 26-Jun-78 16:42:59, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.39, 26-Jun-78 10:36:37, Edit by KIRSCHEN
;MORE CLEAN UP
;<4.MONITOR>NSPINT.MAC.38, 26-Jun-78 10:22:57, Edit by KIRSCHEN
;CLEAN UP, ADD ERROR CODES
;<4.MONITOR>NSPINT.MAC.37, 20-Jun-78 16:25:14, Edit by KIRSCHEN
;UNLOCK BLOCK WHEN ERROR IN CLOSE
;<4.MONITOR>NSPINT.MAC.36, 16-Jun-78 15:10:34, Edit by KIRSCHEN
;FIX TEST FOR ABORT CLOSE AT CLIDIR
;<4.MONITOR>NSPINT.MAC.35, 14-Jun-78 14:17:42, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.34, 14-Jun-78 08:21:11, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.33, 13-Jun-78 15:53:02, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.32, 13-Jun-78 09:01:41, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.31, 13-Jun-78 09:00:40, Edit by KIRSCHEN
;ADD OTHER CLOSE STATES
;<4.MONITOR>NSPINT.MAC.30, 12-Jun-78 14:50:47, Edit by KIRSCHEN
;MORE BUG FIXES TO OPNINT
;<4.MONITOR>NSPINT.MAC.29, 12-Jun-78 14:14:44, Edit by KIRSCHEN
;SUPPLY DEFAULT REASON IF NEEDED ON CLOSE
;<4.MONITOR>NSPINT.MAC.28, 12-Jun-78 11:39:11, Edit by KIRSCHEN
;SEND OPTIONAL DATA ON CLOSE
;<4.MONITOR>NSPINT.MAC.27, 8-Jun-78 15:29:55, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.26, 8-Jun-78 14:35:13, Edit by KIRSCHEN
;ADD SOME ERROR CODES
;<4.MONITOR>NSPINT.MAC.25, 8-Jun-78 12:18:08, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.24, 8-Jun-78 12:16:05, Edit by KIRSCHEN
;MORE CLOSE CODE
;<4.MONITOR>NSPINT.MAC.23, 8-Jun-78 09:16:02, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.22, 8-Jun-78 09:04:40, Edit by KIRSCHEN
;DO NOT USE ARG BLOCK ENTRIES NOT PRESENT IN OPNINT
;<4.MONITOR>NSPINT.MAC.21, 7-Jun-78 10:15:49, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.20, 7-Jun-78 10:14:32, Edit by KIRSCHEN
;YET MORE CLOSE CODE
;<4.MONITOR>NSPINT.MAC.19, 5-Jun-78 13:55:36, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.18, 5-Jun-78 13:53:43, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.17, 1-Jun-78 10:45:20, Edit by KIRSCHEN
;<4.MONITOR>NSPINT.MAC.16, 1-Jun-78 10:41:43, Edit by KIRSCHEN
;ADD MORE CLOSE CODE
;<4.MONITOR>NSPINT.MAC.15, 30-May-78 13:19:16, Edit by KIRSCHEN
;RETURN LINK ADDRESS IN T4 FROM CREATE LINK FUNCTION FOR DEBUGGING
;<4.MONITOR>NSPINT.MAC.14, 30-May-78 09:08:12, Edit by KIRSCHEN
;MAKE SOME ROUTINES INTERNAL
;<4.MONITOR>NSPINT.MAC.13, 26-May-78 11:48:07, Edit by KIRSCHEN
;BREAK INTERNAL INTERFACE CODE OUT OF NSPSRV
;THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY ONLY BE USED
; OR COPIED IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE.
;
;COPYRIGHT (C) 1976,1977,1978,1979,1980 BY DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
SEARCH NSPPAR,PROLOG,PROKL
EXTN <FLUSH,DELNOD,CHKDCR,NSPERR>
EXTN <SNDSEG,SNINT,RDSTS,MTRNCK,MOVSTR,CLZSDI>
EXTN <STRSAV,OBJSRC,MOVSEG,TELOBE,SNDCHK,CHKEMP>
EXTN <MAKTST,TSTLCL,TIMWAT,RDINT,LOKLL>
EXTN <LLLKUP,LOKLL,ULOKLL,BLKLOK,BLKULK,OPNIWK,MAKMSG>
EXTN <CRTLNK,DELNOD,MOVST1,MAKFLG,INTSET,GETRES>
EXTN <ASGWDW,BLKASG,CMPLEN,DCNNAM,DCNSET,EXTSET,ITSID>
EXTN <ITSNAM,ITSNUM,LASTSK,LLBIT,LLBITS,LLHEAD,LLLLCK>
EXTN <MAXBLK,MAXEXP,MAXLNK,MCBDTE,MSGQ,NAKCNT,NETDIR>
EXTN <NETSR1,NETSQ1,NETUIN,NETUOU,NODNUM,NSPLPB,NSPMAX>
EXTN <OBJMAX,OBJTBL,OPNDNC,OPNSRC,OURCNT,OURNAM,OURNUM>
EXTN <PRSNAM,RMSGQ,SMSGQ,SRCNAM,SRNSET,VERSET>
TTITLE (NSPINT,,< - Network Services Protocol Internal Interface>)
;DEFINE LOCAL MACROS
DEFINE LLLOCK
< CALL LOKLL ;;GO LOCK UP THE TREE
> ;;END OF LLLOCK MACRO
DEFINE LLLULK
< CALL ULOKLL ;;GO UNLOCK THE TREE
> ;;DONE
DEFINE ATTENT (VALUE,BIN,COUNT,EXCLU)
< <BIN>B0+<COUNT>B17+EXCLU*1000+VALUE
>
DEFSTR (NTATR,,35,9)
DEFSTR (NTATC,,17,6)
DEFSTR (NTATE,,26,9)
DEFSTR (NTATB,,0,1)
DEFAC (STS,P1)
DEFAC (JFN,P2)
DEFAC (DEV,P4)
DEFAC (F1,P5)
SUBTTL NSP Internal Interface
; NSP FUNCTION DISPATCH VECTOR
SWAPCD
NSPVEC::PHASE 0 ;INSURE NO SKEW IN DEFINITIONS OF OFFSETS
.NSCRT::!XNSCRT!IFIW ;CREATE AN INTERNAL LOGICAL LINK
.NSCLZ::!XNSCLZ!IFIW ;CLOSE AN INTERNAL LOGICAL LINK
.NSOUT::!XNSOUT!IFIW ;OUTPUT TO AN INTERNAL LOGICAL LINK
.NSINB::!XNSINB!IFIW ;DRIVER IS PROVIDING NSP WITH A BUFFER FOR INPUT
.NSRIN::!XNSRIN!IFIW ;READ INTERRUPT MESSAGE ON INTERNAL LOGICAL LINK
.NSSIN::!XNSSIN!IFIW ;SEND INTERRUPT MESSAGE ON INTERNAL LOGICAL LINK
.NSTRN::!XNSTRN!IFIW ;TRUNCATE THE CURRENT MESSAGE
.NSRLS::!XNSRLS!IFIW ;READ LINK STATUS
.NSRHN::!XNSRHN!IFIW ;READ HOST NAME
.NSRTN::!XNSRTN!IFIW ;READ TASK NAME
.NSRDA::!XNSRDA!IFIW ;READ OPTIONAL DATA
.NSRSS::!XNSRSS!IFIW ;READ LINK SEGMENT SIZE
DEPHASE ;END OF SKEW CHECK
NSPVLN==.-NSPVEC ;LENGTH OF NSP DISPATCH VECTOR
XNSRTN::RETBAD (ARGX02) ;FUNCTION NOT IMPLEMENTED
XNSTRN::RETBAD (ARGX02) ;FUNCTION NOT IMPLEMENTED
SUBTTL Internal Links - Temporary Test Routines
; LINK CREATION
MAKINT: MOVX T1,NS%RD!NS%WRT ;LONG ARG FORMAT, READ AND WRITE
MOVE T2,['DRIVER'] ;DRIVER CORRELATION CODE IS SIXBIT "DRIVER"
MOVEI T3,[ IFIW!R
IFIW!R
IFIW![ CALL ASGPAG
RET
MOVEI T2,4000
RETSKP ]
IFIW![ MOVE T1,T2
CALL RELPAG
JFCL
RET ]
IFIW!R
IFIW!R
IFIW!R
IFIW!R
IFIW!R
IFIW!R
IFIW!R ]
MOVEI T4,[ EXP 13 ;SIZE OF ARG BLOCK
[ASCIZ/2136/]
[ASCIZ/TASK/] ;OBJECT TYPE IS TASK
[ASCIZ/DESCRIPTOR/]
4 ;OPTIONAL DATA BYTES
[ BYTE (8) 1, 2, 3, 4 ]
[ASCIZ /TSKNAM/]
[ASCIZ /USERID/]
5 ;PASSWORD STRING COUNT
[ BYTE (8) 10, 11, 12, 13, 14 ]
[ASCIZ /CHARGE/]]
CALL @NSPVEC+.NSCRT ;MAKE A LINK
RET ;PLACE FOR FAILURE BREAKPOINT
RETSKP ;SUCCESS
; SEND OUTPUT TEST ROUTINE. PLACE NSP LINK ID IN T1 BEFORE INVOKING...
SNDOUT: MOVEI T2,NSPINI
MOVE T3,[NS%EOM+<600*6>]
CALL XNSOUT ;SEND THE DATA
RET ;FAIL
RETSKP ;SUCCESS
SUBTTL Internal Links - Create an Internal Link
XNSCRT::ACVAR <A1,A2,A3,A4>
TRVAR <NTCNT,NTPNT,NTOBJ,NTDSC,NTDSS,NTHST,NTHSC,NTCIB>
STKVAR <CRIFLG,CRICOD,CRIVEC,CRIARG,CRILLB,CRIERR>
MOVEM T1,CRIFLG ;SAVE FLAGS
MOVEM T2,CRICOD ;SAVE DRIVER CORRELATION CODE
MOVEM T3,CRIVEC ;SAVE ADDRESS OF DRIVER VECTOR
MOVEM T4,CRIARG ;SAVE ARGUMENT BLOCK ADDRESS
; CHECK FOR DUPLICATE DRIVER-CODE/VECTOR PAIRS
MOVE T1,CRICOD ;GET DRIVER CORRELATION CODE
MOVE T2,CRIVEC ;GET DRIVER FUNCTION VECTOR
CALL DUPCHK ;GO CHECK FOR DUPLICATES IN OTHER LINKS
RETBAD () ;FAILED, RETURN ERROR
; PARSE NAME OF REMOTE OBJECT TO WHICH CONNECTION IS DESIRED
MOVE T1,CRIFLG ;GET FLAGS
MOVE T2,CRIARG ;GET ADDRESS OF ARGUMENT BLOCK
CALL PRSINT ;GO PARSE NAME FOR INTERNAL LINK
RETBAD () ;FAILED, RETURN ERROR TO DRIVER
DMOVE A1,T1 ;COPY COUNTS AND HOST POINTER
DMOVE A3,T3 ;COPY DESCRIPTOR POINTER AND OBJECT ID
; CREATE LOGICAL LINK BLOCK AND INSERT INITIAL VALUES
NOINT ;DO NOT PPEMIT INTERRUPTS WITH SPACE ASSIGNED
MOVE T4,CRIARG ;GET ADDRESS OF DRIVER ARGUMENT BLOCK
MOVE T1,.NSTSN(T4) ;GET ADDRESS OF TASK NAME STRING
HRLI T1,(POINT 7,) ;FORM POINTER TO TASK NAME
MOVX T2,10 ;ALWAYS USE 8-BIT BYTES FOR INTERNAL LINKS
CALL OPNIWK ;CALL WORK ROUTINE TO PERFORM OPEN FUNCTIONS
RETBAD (,<OKINT>) ;FAILED, RETURN ERROR TO DRIVER
MOVEM T1,CRILLB ;SAVE LOIGICAL LINK BLOCK ADDRESS
; SET UP I/O DIRECTIONS IN LOGICAL LINK BLOCK
MOVE T4,CRIFLG ;GET FLAGS PROVIDED BY DRIVER
MOVE T1,CRILLB ;GET ADDRESS OF LOGICAL LINK BLOCK
TXNE T4,NS%RD ;READ WANTED ?
JRST [ SETONE LLOPI,(T1) ;SET INPUT FLAG
JRST .+1] ;CONTINUE
TXNE T4,NS%WRT ;WRITE WANTED ?
JRST [ SETONE LLOPW,(T1) ;SET OUTPUT FLAG
JRST .+1] ;CONTINUE
MOVE T4,CRIARG ;GET ADDRESS OF ARGUMENT BLOCK
CALL STMAXQ ;SET MAXIMUM INPUT/OUTPUT QUEUED VALUES
; ..
; ..
; MOVE STRINGS FOR THIS LOGICAL LINK BLOCK
MOVE T1,CRILLB ;GET LOGICAL LINK BLOCK ADDRESS
MOVE T2,A1 ;GET COUNTS FOR HOST AND DESCRIPTOR STRINGS
MOVE T3,A2 ;COPY POINTER TO HOST NAME STRING
MOVE T4,A3 ;COPY POINTER TO DESCRIPTOR STRING
CALL STRSAV ;GO SAVE THE STRINGS IN PERMANENT AREAS
JRST [ MOVEM T1,CRIERR ;FAILED, SAVE ERROR CODE
MOVE T1,CRILLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL CRTCLN ;GO RELEASE LL BLOCK AND OTHERWISE CLEAN UP
MOVE T1,CRIERR ;RESTORE ERROR CODE
RETBAD () ] ;RETURN ERROR TO DRIVER
; OPEN THE NETWORK CONNECTION FOR THE NEWLY CREATED LINK
MOVE T1,CRIARG ;GET ADDRESS OF DRIVER ARGUMENT BLOCK
MOVE T2,CRILLB ;GET ADDRESS OF LOGICAL LINK BLOCK
HRL T3,A4 ;GET OBJECT ID
HRR T3,A1 ;GET COUNT OF BYTES IN DESCRIPTOR STRING
MOVE T4,A3 ;COPY POINTER TO DESCRIPTOR STRING
CALL OPNINT ;GO OPEN INTERNAL LINK
JRST [ MOVEM T1,CRIERR ;FAILED, SAVE ERROR CODE
MOVE T1,CRILLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL CRTCLN ;GO RELEASE LL BLOCK AND OTHERWISE CLEAN UP
MOVE T1,CRIERR ;RESTORE ERROR CODE
RETBAD () ] ;RETURN ERROR TO DRIVER
; SAVE THE DRIVER CORRELATION CODE AND FUNCTION VECTOR ADDRESS
MOVE T4,CRIARG ;GET ADDRESS OF ARGUMENT BLOCK
MOVE T3,CRILLB ;RESTORE LOGICAL LINK BLOCK ADDRESS
MOVE T2,CRICOD ;GET DRIVER CORRELATION CODE
STOR T2,LLDRV,(T3) ;SAVE IN LOGICAL LINK BLOCK
MOVE T2,CRIVEC ;GET DRIVER FUNCTION VECTOR ADDRESS
STOR T2,LLVEC,(T3) ;SAVE IN LOGICAL LINK BLOCK
SETONE LLINT,(T3) ;NOTE THAT THIS IS AN INTERNAL LINK
;..
;..
; LOCK THE NEWLY CREATED LINK FOR THE DRIVER
CRT050: MOVE T4,CRIFLG ;GET FLAGS FROM DRIVER
TXNN T4,NS%LOK ;DRIVER WANT LINK LOCKED ?
JRST CRT060 ;NO, GO ON
MOVE T1,CRILLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKLOK ;LOCK THE BLOCK FOR THE DRIVER
JRST [ BUG(NSPBAL)
MDISMS ;WAIT FOR LINK TO FREE
JRST CRT050 ] ;GO TRY LOCKING LINK AGAIN, SHOULD BE FREE NOW
OKINT ;BLOCK LOCKED, PERMIT INTERRUPTS AGAIN
; RETURN LOGICAL LINK ADDRESS AS NSP IDENTIFIER FOR LINK
CRT060: MOVE T4,CRILLB ;GET LOGICAL LINK BLOCK ADDRESS
LOAD T1,LLLNK,(T4) ;GET LINK ID
RETSKP ;DONE, RETURN TO DRIVER
;CRTCLN - ROUTINE TO CLEAN UP FROM FAILURE
;
;ACCEPTS IN T1/ LOGICAL LINK BLOCK ADDRESS
; CALL CRTCLN
;RETURNS: +1 ALWAYS
CRTCLN: DECR DCCUR ;ONE LESS LINK ON FAILURE
CALL DELNOD ;FREE THE NODE
LLLULK ;UNLOCK THE TREE
OKINT ;PERMIT INTERRUPTS AGAIN
RET ;AND FAIL
;STMAXQ - ROUTINE TO PUT MAXIMUM INPUT/OUTPUT QUEUED VALUES INTO LL BLOCK
;
;ACCEPTS IN T1/ LOGICAL LINK BLOCK ADDRESS
; T4/ ADDRESS OF ARGUMENT BLOCK
;
;RETURNS: +1 ALWAYS
STMAXQ: MOVE T2,.NSHDR(T4) ;GET NUMBER OF ITEMS IN ARGUMENT BLOCK
CAILE T2,.NSMQI ;USER INCLUDE MAX INPUT IN BLOCK?
SKIPN T2,.NSMQI(T4) ;YES - WAS A ZERO SPECIFIED?
JRST [ CALL STMXDF ;YES - SET MAX DEFAULTS
RET]
STOR T2,LLMQI,(T1) ;SAVE VALUE
MOVE T2,.NSHDR(T4) ;GET NUMBER OF ITEMS IN ARGUMENT BLOCK
MOVEI T3,MAXSGQ ;DEFAULT OUTPUT QUEUE LENGTH
CAIG T2,.NSMQO ;USER INCLUDE MAX OUTPUT IN BLOCK?
JRST STMXQ1 ;NO - TAKE DEFAULT
SKIPN T3,.NSMQO(T4) ;YES - WAS A ZERO SPECIFIED?
MOVEI T3,.NSMQO(T4) ;GET SPECIFIED VALUE
STMXQ1: STOR T3,LLMQO,(T1) ;SAVE VALUE
RET
;STMXDF - SET MAX INPUT/OUTPUT QUEUE DEFAULTS
;
;ACCEPTS: T1/ ADDRESS OF LOGICAL LINK BLOCK
;
;RETURNS: +1,ALWAYS
;
;DESTROYS T2
STMXDF:: MOVEI T2,MAXSEG ;ASSUME READ ONLY
OPSTR <SKIPE>,LLOPW,(T1) ;OPEN FOR WRITE AS WELL?
MOVEI T2,MAXSG1 ;YES. USE A SMALLER NUMBER
STOR T2,LLMQI,(T1) ;SAVE THE INPUT QUEUE LENGTH (ALSO FLOW CONTROL)
MOVEI T2,MAXSGQ ;SET OUTPUT QUEUE LENGTH
STOR T2,LLMQO,(T1) ;SAVE IN LINK BLOCK
RET
;DUPCHK - ROUTINE TO CHECK FOR DUPLICATE DRIVER-CODE/VECTOR PAIRS
;
;ACCEPTS IN T1/ DRIVER CORRELATION CODE
; T2/ DRIVER FUNCTION VECTOR ADDRESS
; CALL DUPCHK
;RETURNS: +1 FAILED, DUPLICATE CODE/VECTOR PAIR ALREADY IN USE
; +2 SUCCESS, THIS IS ONLY SUCH PAIR
DUPCHK: TRVAR <DCKCOD,DCKVEC> ;NOTE: TRVAR'S ARE REQUIRED HERE BECAUSE THE
; COROUTINE OF OBJSRC, INTSRC, NEEDS TO
; ACCESS THIS INFORMATION.
MOVEM T1,DCKCOD ;SAVE DRIVER CORRELATION CODE
MOVEM T2,DCKVEC ;SAVE DRIVER FUNCTION VECTOR ADDRESS
XMOVEI T1,INTSRC ;GET ADDRESS OF COROUTINE FOR OBJSRC
SETOM T2 ;INDICATE ALL LINKS SHOULD BE CHECKED
CALL OBJSRC ;CHECK FOR DUPLICATES
RETSKP ;NONE FOUND, THIS CODE/VECTOR OK
RETBAD (NSPX1) ;FAIL, THIS CODE/VECTOR ALREADY IN USE
;INTSRC - COROUTINE OF OBJSRC TO CHECK FOR DUPLICATE DRIVER-CODE/VECTOR PAIRS
;
;ACCEPTS IN TRVARS DCKCOD/ DRIVER CORRELATION CODE
; DCKVEC/ DRIVER FUNCTION VECTOR ADDRESS
INTSRC: JE LLINT,(T1),R ;IS THIS AN INTERNAL LINK ?
SAVET ;YES, SAVE ALL TEMPORARY AC'S
LOAD T3,LLDRV,(T1) ;GET DRIVER CORRELATION CODE
LOAD T4,LLVEC,(T1) ;GET DRIVER FUNCTION VECTOR ADDRESS
CAMN T3,DCKCOD ;SAME CORRELATION CODE ?
CAME T4,DCKVEC ; AND SAME DRIVER FUNCTION VECTOR ?
RET ;NO, RETURN NOT FOUND
RETSKP ;YES, RETURN FOUND
;OPNINT - ROUTINE TO OPEN AN INTERNAL LOGICAL LINK
;
;ACCEPTS IN T1/ ADDRESS OF DRIVER ARGUMENT BLOCK
; T2/ ADDRESS OF LOGICAL LINK BLOCK
; T3/ OBJECT ID,,COUNT OF BYTES IN DESCRIPTOR STRING
; T4/ POINTER TO DESCRIPTOR STRING
; CALL OPNINT
;RETURNS: +1 FAILED, ERROR CODE IN T1
; +2 SUCCESS, CONNECT-INITIATE MESSAGE (CI) SENT OVER LINK
OPNINT: STKVAR <OPIARG,OPIATR,OPILLB,OPIOBJ,OPIDSS,OPIDSC,OPIERR>
MOVEM T1,OPIARG ;SAVE DRIVER ARGUMENT BLOCK ADDRESS
MOVEM T2,OPILLB ;SAVE LOGICAL LINK BLOCK ADDRESS
HLRZM T3,OPIOBJ ;SAVE OBJECT ID
HRRZM T3,OPIDSC ;SAVE COUNT OF DESCRIPTOR BYTES
MOVEM T4,OPIDSS ;SAVE DESCRIPTOR STRING POINTER
; ASSIGN FREE SPACE FOR THE ATTRIBUTE LIST FOR THIS LINK
MOVEI T1,0 ;INITIALIZE SPACE NEEDED
MOVE T4,OPIARG ;GET ADDRESS OF DRIVER ARGUMENT BLOCK
MOVE T3,.NSHDR(T4) ;GET ARGUMENT BLOCK LENGTH
CAILE T3,.NSODC ;OPTIONAL DATA COUNT PRESENT ?
ADD T1,.NSODC(T4) ;YES, GET NUMBER OF BYTES IN OPTIONAL DATA
CAILE T3,.NSPWC ;PASSWORD COUNT PROVIDED IN ARG BLOCK ?
ADD T1,.NSPWC(T4) ;YES, ADD NUMBER OF BYTES IN PASSWORD STRING
IDIVI T1,4 ;COMPUTE NUMBER OF WORDS REQUIRED
SKIPN T2 ;ROUND UP IF
ADDI T1,1 ; NEEDED
ADDI T1,MAXLC ;AND ACCOUNT FOR USER ID AND ACCOUNT STRINGS
CALL ASGSWP ;ASSIGN SPACE
RETBAD (MONX01) ;FAILED, RETURN ERROR TO CALLER
ADDI T1,1 ;POINT TO START OF ATTRIBUTE LIST (SKIP HEADER)
MOVEM T1,OPIATR ;SAVE ADDRESS OF START OF ATTRIBUTE LIST
; CREATE THE ATTRIBUTE LIST FOR THIS INTERNAL LINK
MOVE T1,OPIARG ;GET ADDRESS OF DRIVER ARGUMENT BLOCK
MOVE T2,OPIATR ;GET ADDRESS OF START OF ATTRIBUTE LIST
CALL CREATR ;GO CREATE ATTRIBUTE LIST
JRST [ MOVEM T1,OPIERR ;FAILED, SAVE ERROR CODE
MOVE T1,OPIATR ;GET ADDRESS OF ATTRIBUTE LIST
CALL FREATR ;CLEAN UP AND RETURN ERROR TO CALLER
MOVE T1,OPIERR ;RESTORE ERROR CODE
RETBAD () ] ;RETURN ERROR CODE
; ..
; ..
; OPEN THE NETWORK CONNECTION
MOVE T1,OPILLB ;GET LOGICAL LINK BLOCK ADDRESS
MOVE T2,OPIATR ;GET ADDRESS OF START OF ATTRIBUTE LIST
HRL T3,OPIOBJ ;GET OBJECT ID
HRR T3,OPIDSC ;GET DESCRIPTOR STRING LENGTH
MOVE T4,OPIDSS ;GET POINTER TO DESCRIPTOR STRING
CALL CRTLNK ;CREATE NETWORK LINK
JRST [ MOVEM T1,OPIERR ;FAILED, SAVE ERROR CODE
MOVE T1,OPIATR ;GET ADDRESS OF ATTRIBUTE LIST
CALL FREATR ;CLEAN UP AND RETURN ERROR TO CALLER
MOVE T1,OPILLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL DELNOD ;DELETE THE LINK BLOCK
DECR DCCUR ;DECREMENT NUMBER OF EXTANT LINKS
LLLULK ;UNLOCK THE LOGICAL LINK TREE
MOVE T1,OPIERR ;RESTORE ERROR CODE
RETBAD () ] ;RETURN ERROR CODE
; CLEAN UP FREE SPACE AND RETURN SUCCESS
MOVE T1,OPIATR ;GET ADDRESS OF ATTRIBUTE LIST
CALL FREATR ;CALL CLEANUP ROUTINE
RETSKP ;DONE, RETURN SUCCESS.
;FREATR - ROUTINE TO RELEASE FREE SPACE USED TO HOLD THE ATTRIBUTE LIST
;
;ACCEPTS IN T1/ ADDRESS OF BLOCK USED FOR ATTRIBUTE LIST
; CALL FREATR
;RETURNS: +1 ALWAYS
FREATR: SUBI T1,1 ;POINT TO START OF FREE BLOCK
HRRZ T2,(T1) ;GET BLOCK SIZE
CALLRET RELSWP ;RELEASE FREE SPACE AND RETURN
;INTNAM - ROUTINE TO SET UP POINTERS AND COUNTS FOR SEPARATE SPECIFICATION
; OF THE PORTIONS OF A DESTINATION TASK NAME.
;
;ACCEPTS IN T1/ ADDRESS OF ARGUMENT BLOCK FOR .NSCRT
; TRVARS: NTHSC, NTHST, NTOBJ, NTDSS, NTDSC
; CALL INTNAM
;RETURNS: +1 FAILED, ERROR CODE IN T1
; +2 SUCCESS, WITH TRVARS FILLED IN
INTNAM: ACVAR <AB> ;WORK AC TO HOLD ARGUMENT BLOCK ADDRESS
MOVEM T1,AB ;SAVE ADDRESS OF ARGUMENT BLOCK
; CHECK MINIMUM LENGTH OF ARGUMENT BLOCK
MOVE T4,.NSHDR(AB) ;GET ARGUMENT BLOCK SIZE
CAIGE T4,.NSOBJ ;AT LEAST HOST AND OBJECT SPECIFIED ?
RETBAD (ARGX04) ;NO, ARGUMENT BLOCK TOO SMALL
; SAVE HOST NAME POINTER AND BYTE COUNT
MOVE T1,.NSHST(AB) ;GET ADDRESS OF HOST NAME STRING
HRLI T1,(POINT 7,) ;FORM BYTE POINTER TO HOST NAME STRING
MOVEM T1,NTHST ;SAVE POINTER TO HOST NAME STRING
MOVX T3,MAXLC ;GET MAX CHARS IN HOST NAME
CALL CMPLEN ;COMPUTE SIZE OF HOST NAME STRING
SUBI T3,1 ;ADJUST FOR NULL ON END OF STRING
MOVEM T3,NTHSC ;SAVE HOST NAME STRING SIZE
; SAVE OBJECT NUMBER
MOVE T1,.NSOBJ(AB) ;GET ADDRESS OF OBJECT STRING
HRLI T1,(POINT 7,) ;FORM POINTER TO STRING
CALL OBJLOK ;LOOK UP THE OBJECT IN TABLE
RETBAD (DCNX3) ;NO SUCH OBJECT
MOVEM T1,NTOBJ ;SAVE OBJECT NUMBER
; SAVE DESCRIPTOR SIZE AND POINTER
SETZM NTDSS ;INITIALIZE POINTER AND COUNT FOR
SETZM NTDSC ; DESCRIPTOR IN CASE NOT SPECIFIED IN CALL
SKIPN T1,.NSDSC(AB) ;ANY DESCRIPTOR GIVEN IN CALL ?
RETSKP ;NO, DONE. RETURN SUCCESS
HRLI T1,(POINT 7,) ;YES, FORM POINTER TO DESCRIPTOR STRING
MOVEM T1,NTDSS ;SAVE BYTE POINTER TO DESCRIPTOR
MOVX T3,MAXLC ;GET MAX NUMBER OF BYTES IN STRING
CALL CMPLEN ;COMPUTE NUMBER OF BYTES IN DESCRIPTOR
MOVEM T3,NTDSC ;SAVE COUNT
RETSKP ;DONE. RETURN SUCCESS.
;PRSINT - ROUTINE TO PARSE A NAME FIELD FOR AN INTERNAL LINK
;
;ACCEPTS IN T1/ FLAGS AS IN CALL TO .NSCRT
; T2/ POINTER TO ARGUMENT BLOCK
; CALL PRSINT
;RETURNS: +1 FAILED, SYNTAX ERROR
; +2 SUCCESS, WITH FOLLOWING TRVARS SET UP:
;
; NTHST,NTHSC,NTOBJ,NTDSC,NTDSS
PRSINT: TXNN T1,NS%SHT ;SHORT FORM CALL ?
JRST [ MOVE T1,T2 ;NO, GET ADDRESS OF ARGUMENT BLOCK
CALL INTNAM ;GO PARSE INDIVIDUAL ITEMS IN NAME
RETBAD () ;FAILED, RETURN ERROR
JRST PRS020 ] ;GO RETURN PARSED ITEMS
MOVE T1,.NSSTR(T2) ;YES, GET ADDRESS OF NAME STRING
HRLI T1,(POINT 7,) ;FORM POINTER TO STRING
CALL CMPLEN ;GO GET LENGTH OF STRING
CALL PRSNAM ;GO PARSE THE NAME FIELD
; HERE TO RETURN PARSED ITEMS
PRS020: HRL T1,NTHSC ;GET COUNT OF BYTES IN HOST NAME STRING
HRR T1,NTDSC ;GET COUNT OF BYTES IN DESCRIPTOR STRING
MOVE T2,NTHST ;GET POINTER TO HOST NAME STRING
MOVE T3,NTDSS ;GET POINTER TO DESCRIPTOR
MOVE T4,NTOBJ ;GET OBJECT ID
RETSKP ;DONE, RETURN
;CREATR - ROUTINE TO CREATE AN ATTRIBUTE LIST
;
;ACCEPTS IN T1/ ADDRESS OF DRIVER ARGUMENT BLOCK
; T2/ ADDRESS OF START OF ATTRIBUTE LIST
; CALL CREATR
;RETURNS: +1 FAILED, ERROR CODE IN T1
; +2 SUCCESS, WITH ATTRIBUTE LIST CREATED
CREATR: ACVAR <BK,AL,LP>
MOVEM T1,BK ;SAVE ADDRESS OF DRIVER ARGUMENT BLOCK
MOVEM T2,AL ;SAVE ADDRESS OF START OF LIST
MOVEI LP,0 ;NO POINTER TO PREVIOUS ITEM YET
; ADD OPTIONAL DATA TO ATTRIBUTE LIST
MOVE T1,.NSHDR(BK) ;GET NUMBER OF WORDS IN ARG BLOCK
CAILE T1,.NSODC ;OPTIONAL DATA INCLUDED IN ARG BLOCK ?
SKIPG .NSODC(BK) ;YES, ANY OPTIONAL DATA TO ADD ?
JRST CRA010 ;NO, GO DO PASSWORD
MOVE T3,LP ;GET POINTER TO LAST ITEM ON LIST
MOVE T2,AL ;ADDRESS OF CURRENT ITEM ON ATTRIBUTE LIST
MOVE T1,BK ;ADDRESS OF DRIVER ARGUMENT BLOCK
CALL ADDOPT ;ADD OPTIONAL DATA TO LIST
MOVEM AL,LP ;SAVE NEW LAST ITEM IN LIST
MOVEM T1,AL ;SAVE NEW CURRENT ITEM IN LIST
; ADD PASSWORD STRING TO ATTRIBUTE LIST
CRA010: MOVE T1,.NSHDR(BK) ;GET NUMBER OF WORDS IN ARG BLOCK
CAILE T1,.NSPWC ;PASSWORD INCLUDED ?
SKIPG .NSPWC(BK) ;YES, ANY PASSWORD TO ADD ?
JRST CRA020 ;NO, GO DO USER ID
MOVE T3,LP ;GET POINTER TO LAST ITEM ON LIST
MOVE T2,AL ;ADDRESS OF CURRENT ITEM ON ATTRIBUTE LIST
MOVE T1,BK ;ADDRESS OF DRIVER ARGUMENT BLOCK
CALL ADDPSW ;ADD PASSWORD TO LIST
MOVEM AL,LP ;SAVE NEW LAST ITEM IN LIST
MOVEM T1,AL ;SAVE NEW CURRENT ITEM IN LIST
; ..
; ..
; ADD USER ID TO THE LIST
CRA020: MOVE T1,.NSHDR(BK) ;GET NUMBER OF ITEMS IN ARG BLOCK
CAILE T1,.NSUSR ;USER ID INCLUDED IN ARG BLOCK ?
SKIPN .NSUSR(BK) ;YES, ANY USER ID TO ADD ?
JRST CRA030 ;NO, GO DO ACCOUNT
MOVE T3,LP ;GET POINTER TO LAST ITEM ON LIST
MOVE T2,AL ;ADDRESS OF CURRENT ITEM ON ATTRIBUTE LIST
MOVE T1,BK ;ADDRESS OF DRIVER ARGUMENT BLOCK
CALL ADDUSR ;ADD USER ID TO THE LIST
MOVEM AL,LP ;SAVE NEW LAST ITEM IN LIST
MOVEM T1,AL ;SAVE NEW CURRENT ITEM IN LIST
; ADD ACCOUNT TO ATTRIBUTE LIST
CRA030: MOVE T1,.NSHDR(BK) ;GET NUMBER OF ITEMS IN ARG BLOCK
CAILE T1,.NSCHG ;ACCOUNT INCLUDED IN ARG BLOCK ?
SKIPN .NSCHG(BK) ;YES, ANY ACCOUNT TO ADD ?
JRST CRA040 ;NO, GO RETURN TO CALLER
MOVE T3,LP ;GET POINTER TO LAST ITEM ON LIST
MOVE T2,AL ;ADDRESS OF CURRENT ITEM ON ATTRIBUTE LIST
MOVE T1,BK ;ADDRESS OF DRIVER ARGUMENT BLOCK
CALL ADDACT ;ADD OPTIONAL DATA TO LIST
; HERE WHEN ALL ATTRIBUTES ARE IN LIST
CRA040: RETSKP ;DONE, RETURN
;ADDOPT - ROUTINE TO ADD THE OPTIONAL DATA STRING TO THE ATTRIBUTE LIST
;
;ACCEPTS IN T1/ ADDRESS OF DRIVER ARGUMENT BLOCK
; T2/ CURRENT POINTER INTO ATTRIBUTE LIST
; T3/ ADDRESS OF PREVIOUS ITEM IN ATTRIBUTE LIST
; CALL ADDOPT
;RETURNS: +1 ALWAYS, WITH T1/ UPDATED POINTER INTO ATTRIBUTE LIST
ADDOPT: ACVAR <BK,AL>
MOVEM T1,BK ;SAVE ARGUMENT BLOCK ADDRESS
MOVEM T2,AL ;SAVE ATTRIBUTE POINTER
; ADD ATTRIBUTE TYPE AND PREVIOUS ITEM POINTER TO ATTRIBUTE LIST
STOR T3,PRFXL,(AL) ;STORE POINTER TO LAST ITEM IN LIST
MOVX T4,.PFOPT ;GET OPTIONAL DATA ATTRIBUTE TYPE CODE
STOR T4,PRFXV,(AL) ;SAVE ATTRIBUTE TYPE IN ATTRIBUTE LIST
; ADD SIZE OF THIS ATTRIBUTE TO LIST
MOVE T3,.NSODC(BK) ;GET COUNT OF BYTES IN OPTIONAL DATA
IDIVI T3,4 ;COMPUTE NUMBER OF WORDS
SKIPN T4 ;ROUND UP
ADDI T3,1 ;..
STOR T3,PRFXS,(AL) ;SAVE SIZE IN ATTRIBUTE LIST
; ADD THE STRING TO THE ATTRIBUTE LIST
MOVE T3,.NSODC(BK) ;GET BYTE COUNT AGAIN
MOVE T2,.NSOPD(BK) ;GET ADDRESS OF OPTIONAL DATA STRING
HRLI T2,(POINT 8,) ;FORM BYTE POINTER TO OPTIONAL DATA
MOVEI T1,1(AL) ;GET DESTINATION ADDRESS
CALL MOVST1 ;ADD STRING TO LIST
LOAD T4,PRFXS,(AL) ;GET SIZE OF THIS BLOCK
ADDI AL,1(T4) ;POINT TO NEXT FREE ELEMENT ON LIST
RET ;DONE, RETURN
;ADDPSW - ROUTINE TO ADD THE PASSWORD STRING TO THE ATTRIBUTE LIST
;
;ACCEPTS IN T1/ ADDRESS OF DRIVER ARGUMENT BLOCK
; T2/ CURRENT POINTER INTO ATTRIBUTE LIST
; T2/ CURRENT POINTER INTO ATTRIBUTE LIST
; CALL ADDPSW
;RETURNS: +1 ALWAYS, WITH T1/ UPDATED POINTER INTO ATTRIBUTE LIST
ADDPSW: ACVAR <BK,AL>
MOVEM T1,BK ;SAVE ARGUMENT BLOCK ADDRESS
MOVEM T2,AL ;SAVE ATTRIBUTE POINTER
; ADD ATTRIBUTE TYPE AND PREVIOUS ITEM POINTER TO ATTRIBUTE LIST
STOR T3,PRFXL,(AL) ;STORE POINTER TO LAST ITEM IN LIST
MOVX T4,.PFPWD ;GET PASSWORD ATTRIBUTE TYPE CODE
STOR T4,PRFXV,(AL) ;SAVE ATTRIBUTE TYPE IN ATTRIBUTE LIST
; ADD SIZE OF THIS ATTRIBUTE TO LIST
MOVE T3,.NSPWC(BK) ;GET COUNT OF BYTES IN PASSWORD
IDIVI T3,4 ;COMPUTE NUMBER OF WORDS
SKIPN T4 ;ROUND UP
ADDI T3,1 ;..
STOR T3,PRFXS,(AL) ;SAVE SIZE IN ATTRIBUTE LIST
; ADD THE STRING TO THE ATTRIBUTE LIST
MOVE T3,.NSPWC(BK) ;GET BYTE COUNT AGAIN
MOVE T2,.NSPSW(BK) ;GET ADDRESS OF PASSWORD STRING
HRLI T2,(POINT 8,) ;FORM BYTE POINTER TO PASSWORD
MOVEI T1,1(AL) ;GET DESTINATION ADDRESS
CALL MOVST1 ;ADD STRING TO LIST
LOAD T4,PRFXS,(AL) ;GET SIZE OF THIS BLOCK
ADDI AL,1(T4) ;POINT TO NEXT FREE ELEMENT ON LIST
RET ;DONE, RETURN
;ADDUSR - ROUTINE TO ADD THE USER STRING TO THE ATTRIBUTE LIST
;
;ACCEPTS IN T1/ ADDRESS OF DRIVER ARGUMENT BLOCK
; T2/ CURRENT POINTER INTO ATTRIBUTE LIST
; T2/ CURRENT POINTER INTO ATTRIBUTE LIST
; CALL ADDUSR
;RETURNS: +1 ALWAYS, WITH T1/ UPDATED POINTER INTO ATTRIBUTE LIST
ADDUSR: ACVAR <BK,AL>
MOVEM T1,BK ;SAVE ARGUMENT BLOCK ADDRESS
MOVEM T2,AL ;SAVE ATTRIBUTE POINTER
; ADD ATTRIBUTE TYPE AND PREVIOUS ITEM POINTER TO ATTRIBUTE LIST
STOR T3,PRFXL,(AL) ;STORE POINTER TO LAST ITEM IN LIST
MOVX T4,.PFUDT ;GET USER ID ATTRIBUTE TYPE CODE
STOR T4,PRFXV,(AL) ;SAVE ATTRIBUTE TYPE IN ATTRIBUTE LIST
; ADD SIZE OF THIS ATTRIBUTE TO LIST
MOVE T1,.NSUSR(BK) ;GET ADDRESS OF USER ID STRING
HRLI T1,(POINT 7,) ;FORM BYTE POINTER TO USER ID STRING
MOVX T3,MAXLC ;GET MAX SIZE OF USER ID STRING
CALL CMPLEN ;GO GET LENGTH OF USER ID STRING
STOR T3,PRFXS,(AL) ;SAVE SIZE IN ATTRIBUTE LIST
; ADD THE STRING TO THE ATTRIBUTE LIST
MOVE T2,.NSUSR(BK) ;GET ADDRESS OF STRING AGAIN
HRLI T2,(POINT 7,) ;AND POINT TO THE STRING
MOVEI T1,1(AL) ;GET DESTINATION ADDRESS
CALL MOVST1 ;ADD STRING TO LIST
LOAD T4,PRFXS,(AL) ;GET SIZE OF THIS BLOCK
ADDI AL,1(T4) ;POINT TO NEXT FREE ELEMENT ON LIST
RET ;DONE, RETURN
;ADDACT - ROUTINE TO ADD THE ACCOUNT STRING TO THE ATTRIBUTE LIST
;
;ACCEPTS IN T1/ ADDRESS OF DRIVER ARGUMENT BLOCK
; T2/ CURRENT POINTER INTO ATTRIBUTE LIST
; T2/ CURRENT POINTER INTO ATTRIBUTE LIST
; CALL ADDACT
;RETURNS: +1 ALWAYS, WITH T1/ UPDATED POINTER INTO ATTRIBUTE LIST
ADDACT: ACVAR <BK,AL>
MOVEM T1,BK ;SAVE ARGUMENT BLOCK ADDRESS
MOVEM T2,AL ;SAVE ATTRIBUTE POINTER
; ADD ATTRIBUTE TYPE AND PREVIOUS ITEM POINTER TO ATTRIBUTE LIST
STOR T3,PRFXL,(AL) ;STORE POINTER TO LAST ITEM IN LIST
MOVX T4,.PFACN ;GET ACCOUNT ATTRIBUTE TYPE CODE
STOR T4,PRFXV,(AL) ;SAVE ATTRIBUTE TYPE IN ATTRIBUTE LIST
; ADD SIZE OF THIS ATTRIBUTE TO LIST
MOVE T1,.NSCHG(BK) ;GET ADDRESS OF ACCOUNT STRING
HRLI T1,(POINT 7,) ;FORM BYTE POINTER TO ACCOUNT STRING
MOVX T3,MAXLC ;GET MAX SIZE OF ACCOUNT STRING
CALL CMPLEN ;GO GET LENGTH OF ACCOUNT STRING
STOR T3,PRFXS,(AL) ;SAVE SIZE IN ATTRIBUTE LIST
; ADD THE STRING TO THE ATTRIBUTE LIST
MOVE T2,.NSCHG(BK) ;GET ADDRESS OF STRING AGAIN
HRLI T2,(POINT 7,) ;AND POINT TO THE STRING
MOVEI T1,1(AL) ;GET DESTINATION ADDRESS
CALL MOVST1 ;ADD STRING TO LIST
LOAD T4,PRFXS,(AL) ;GET SIZE OF THIS BLOCK
ADDI AL,1(T4) ;POINT TO NEXT FREE ELEMENT ON LIST
RET ;DONE, RETURN
SUBTTL Internal Links - Send Output on an Internal Link
XNSOUT::ASUBR <SNOLID,SNOBUF,SNOCNT,SNOLLB>
STKVAR <SNOFLG>
MOVEM T3,SNOFLG ;SAVE FLAGS
; LOCK LOGICAL LINK BLOCK
SNO001: MOVE T1,SNOLID ;GET LINK ID
CALL INTLOK ;GO CHECK LINK STATE
RET ;FAILED, RETURN ERROR
MOVEM T1,SNOLLB ;SAVE LOGICAL LINK BLOCK ADDRESS
; CHECK THAT ANOTHER BUFFER IS NOT STILL BEING PROCESSED
SNO003: MOVE T1,SNOLLB ;GET LOGICAL LINK BLOCK ADDRESS
JE LLBFO,(T1),SNO005 ;IS ANOTHER BUFFER NOW BEING PROCESSED ?
MOVE T4,SNOFLG ;YES, GET FLAGS PROVIDED BY DRIVER
JE NS%BLK,T4,[ SETONE LLNDO,(T1) ;DON'T BLOCK, NOTIFY DRIVER WHEN READY
CALL BLKULK ;NOTIFY DRIVER THAT WE ARE STILL BUSY
RETBAD (NSPX4)] ;ADVISE DRIVER OF PREVIOUS BUFFER
LOAD T1,LLLNK,(T1) ;GET LINK ID
HRLS T1 ;FORM STANDARD SCHEDULER WAIT
HRRI T1,SNOTST ; TEST WORD
MOVE T2,SNOLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL INTWAT ;GO WAIT UNTIL DONE WITH THIS BUFFER
RETBAD () ;FAIL, LINK NOT OK ANY MORE
; SAVE INPUT ARGUMENTS IN THE LOGICAL LINK
SNO005: MOVE T2,SNOBUF ;GET BUFFER ADDRESS PROVIDED BY DRIVER
STOR T2,LLBFO,(T1) ;STORE OUTPUT BUFFER ADDRESS
HRLI T2,(POINT 8,) ;FORM POINTER TO START OF BUFFER
STOR T2,LLBPO,(T1) ;SAVE IN LOGICAL LINK BLOCK
HRRZ T4,SNOCNT ;GET JUST THE COUNT
NSIB01: STOR T4,LLOCT,(T1) ;STORE INITIAL COUNT FOR OUTPUT
MOVE T4,SNOFLG ;GET FLAGS
TXNE T4,NS%BLK ;DRIVER WANT TO BLOCK ?
JRST [SETONE LLWAT,(T1) ;YES, NOTE DRIVER ASKED TO WAIT
JRST .+1] ;CONTINUE
SETZRO LLEOM,(T1) ;ASSUME NOT EOM
TXNE T4,NS%EOM ;IS THIS A COMPLETE MESSAGE ?
JRST [SETONE LLEOM,(T1) ;YES, NOTE THAT EOM SHOULD BE SET
JRST .+1] ;CONTINUE
; NOTE THAT END-OF-MESSAGE IS DESIRED IF REQUESTED BY THE DRIVER
MOVE T4,SNOFLG ;GET FLAGS FROM DRIVER
JN NS%EOM,T4,[ MOVE T1,SNOLLB ;GET LOGICAL LINK BLOCK ADDRESS
SETONE LLFEM,(T1) ;SAY SHOULD GET EOM ON OUTPUT
JRST .+1 ] ;CONTINUE IN MAINLINE CODE
;..
;..
; PROCESS ANY OUTSTANDING ACK'S FOR THIS LINK
SNO010: MOVE T1,SNOLLB ;GET ADDRESS OF LOGICAL LINK BLOCK
CALL MOVSEG ;PROCESS OUTSTANDING ACK'S
JRST [ MOVE T4,SNOFLG ;GET FLAGS PROVIDED BY DRIVER
JE NS%BLK,T4,[ MOVE T1,SNOLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKULK ;CLEAN UP LOCKED LL BLOCK
RETSKP] ;RETURN IF BLOCKING NOT REQUESTED
MOVE T2,SNOLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL INTWAT ;GO WAIT FOR CONDITION TO BE SATISFIED
RETBAD () ;FAIL, LINK NOT OK ANY MORE
JRST SNO010 ] ;TRY AGAIN TO PROCESS ACK'S
; SEND AS MUCH DATA AS POSSIBLE NOW
MOVE T1,SNOLLB ;GET ADDRESS OF LOGICAL LINK BLOCK
CALL SNDINT ;GO SEND AS MUCH OUTPUT AS POSSIBLE
RETBAD () ;FAIL, LINK WENT AWAY OR NOT IN RUN STATE
MOVE T1,SNOLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKULK ;CLEAN UP LOCKED LOGICAL LINK BLOCK
RETSKP ;DONE, RETURN SUCCESS
; SCHEDULER TEST TO WAIT UNTIL PREVIOUS BUFFER IS COMPLETELY PROCESSED
RESCD
SNOTST: CALL CHKLNK ;GO CHECK STATE OF LINK
JRST 1(4) ;LINK NOT IN RUN STATE, WAKE UP
JE LLBFO,(T1),1(4) ;WAKE UP IF DONE WITH BUFFER
JRST 0(4) ;CONTINUE WAITING, STILL ON LAST BUFFER
SWAPCD
;CHKLNK - ROUTINE TO CHECK THE STATE OF AN INTERNAL LINK
;
;ACCEPTS IN T1/ LINK ID
; CALL CHKLNK
;RETURNS: +1 FAILED, LINK DOES NOT EXIST OR IS NOT IN RUN STATE
; +2 SUCCESS, WITH T1/ ADDRESS OF LOGICAL LINK BLOCK
CHKLNK: SETOM T2 ;ANY LINK
CALL LLLKUP ;GO FIND BLOCK
RETBAD (NSPX2) ;NOT THERE. SOMETHING TERRIBLE HAPPENED
LOAD T2,LLSTA,(T1) ;GET STATE
CAIE T2,LLSRUN ;IS IT RUNNING?
RETBAD (NSPX3) ;NO, FAIL
RETSKP ;YES. ALL FINE
;INTWAT - ROUTINE TO PERFORM A BLOCK FOR AN INTERNAL LINK
;
;ACCEPTS IN T1/ STANDARD SCHEDULER TEST WORD
; T2/ ADDRESS OF LOGICAL LINK BLOCK
; CALL INTWAT
;RETURNS: +1 FAILED - LINK DOES NOT EXIST OR IS NOT IN RUN STATE ANY MORE
; +2 SUCCESS, WAIT OVER AND LINK IN RUN STATE
INTWAT: ASUBR <IWTTST,IWTLLB,IWTLID>
MOVE T1,IWTLLB ;GET LOGICAL LINK BLOCK ADDRESS
LOAD T4,LLLNK,(T1) ;GET LINK ID
MOVEM T4,IWTLID ;SAVE LINK ID
CALL BLKULK ;UNLOCK THE LOGICAL LINK BLOCK
MOVE T1,IWTTST ;GET SCHEDULER WAIT TEST
INTW10: MDISMS ;WAIT FOR CONDITION TO BE SATISFIED
MOVE T1,IWTLID ;GET LINK ID AGAIN
CALL CHKLNK ;GO CHECK STATE OF LINK
RET ;FAIL, LINK NOT EXISTENT OR NOT IN RUN STATE
MOVE T1,IWTLLB ;GET LOGICAL LINK BLOCK
CALL BLKLOK ;LOCK THE LOGICAL LINK
JRST INTW10 ;FAILED, WAIT THEN TRY AGAIN
RETSKP ;DONE, WAIT SATISFIED AND LINK LOCKED AND OK
;SNDINT - ROUTINE TO SEND AS MUCH DATA AS POSSIBLE FOR AN INTERNAL LINK
;
;ACCEPTS IN T1/ ADDRESS OF LOGICAL LINK BLOCK
; CALL SNDINT
;RETURNS: +1 FAILED, LINK WENT AWAY OR NOT IN RUN STATE
; +2 SUCCESS, WITH LOGICAL LINK BLOCK ON THE BACKGROUND TASK'S
; "OUTPUT REMAINING" QUEUE (OUTQUE) IF NOT ALL
; DATA COULD BE SENT.
SNDINT: STKVAR <SNDLLB>
MOVEM T1,SNDLLB ;SAVE LOGICAL LINK BLOCK ADDRESS
; CHECK TO SEE IF THERE IS ANY MORE DATA TO SEND, DISPOSE OF BUFFER IF NOT
SND020: MOVE T1,SNDLLB ;GET ADDRESS OF LOGICAL LINK BLOCK
JN LLOCT,(T1),SND025 ;IF DATA LEFT, GO TRY TO SEND IT
MOVE T1,SNDLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL TELOBE ;GO TELL DRIVER THAT OUTPUT BUFFER IS EMPTY
RETSKP ;DONE, RETURN
;CHECK TO SEE IF ANY SEGMENTS CAN BE SENT NOW
SND025: MOVE T1,SNDLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL SNDCHK ;CAN ANY SEGMENTS BE SENT ?
JRST [ MOVE T1,SNDLLB ;NO, GET LOGICAL LINK BLOCK ADDRESS
CALL QUECHK ;GO SEE IF LINK MUST BE QUEUED, OR WAIT FOR OK
RETBAD () ;LINK WENT AWAY
SKIPN T1 ;HAVE WE WAITED UNTIL IT'S OK TO SEND DATA ?
RETSKP ;NO, LINK WAS PUT ON Q, SO ALL DONE FOR NOW
JRST SND025 ] ;YES, TRY AGAIN TO SEE IF A SEGMENT CAN BE SENT
; HERE TO SEND A SEGMENT
SND030: MOVE T1,SNDLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL OUTSEG ;SEND THE SEGMENT
JRST [ MOVE T4,SNDLLB ;NO, GET LOGICAL LINK BLOCK ADDRESS
JE LLWAT,(T4),SND050 ;IF BLOCKING NOT WANTED, GO QUEUE LL BLOCK
MOVE T2,SNDLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL INTWAT ;WAIT FOR CONDITION TO BE SATISFIED
RETBAD () ;FAIL, LINK WENT AWAY OR NOT IN RUN STATE
JRST SND030 ] ;TRY AGAIN TO SEE IF A SEGMENT CAN BE SENT
JRST SND020 ;CHECK TO SEE IF ANOTHER SEGMENT CAN BE SENT
; HERE WHEN MORE DATA REMAINS TO BE SENT - ADD THIS LOGICAL LINK BLOCK
; TO THE BACKGROUND TASK'S "OUTPUT REMAINING" QUEUE (OUTQUE).
SND050: MOVE T1,SNDLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL ADDOUT ;GO ADD THIS BLOCK TO OUTQUE
CALL SKDOUT ;NOTE BACKGROUND TASK ACTION NEEDED
MOVE T1,SNDLLB ;GET LOGICAL LINK BLOCK ADDRESS
SETONE LLNDO,(T1) ;NOTE DRIVER NOTIFICATION NEEDED
CALLRET BLKULK ;UNLOCK THE BLOCK AND RETURN
;QUECHK - ROUTINE TO DETERMINE IF THIS LOGICAL LINK BLOCK SHOULD BE
; PLACED ON THE BACKGROUND TASKS'S "OUTPUT REMAINING" QUEUE
;
;ACCEPTS IN T1/ ADDRESS OF LOGICAL LINK BLOCK
; T2/ ADDRESS OF SCHEDULER TEST ROUTINE
; CALL QUECHK
;RETURNS: +1 FAILED, LINK WENT AWAY OR NOT IN RUN STATE
; +2 SUCCESS, LINK QUEUED IF NEEDED OR NOW OK TO SEND DATA
QUECHK: ASUBR <QCKLLB>
MOVE T4,QCKLLB ;NO, GET LOGICAL LINK BLOCK ADDRESS
JE LLWAT,(T4),QCK050 ;IF BLOCKING NOT WANTED, SEE IF LOCAL LINK
CALL MAKTST ;GO MAKE A STANDARD SCHEDULER TEST
MOVE T2,QCKLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL INTWAT ;WAIT FOR CONDITION TO BE SATISFIED
RETBAD () ;LINK WENT AWAY OR NOT IN RUN STATE
SETOM T1 ;NOTE THAT CONDITION HAS BEEN SATISFIED
RETSKP ;DONE, RETURN SUCCESS - OK TO SEND DATA NOW
; HERE IF BLOCKING NOT REQUESTED - SEE IF THIS IS A LOCAL LINK
QCK050: MOVE T1,QCKLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL TSTLCL ;IS THIS A LOCAL LINK ?
CALL ADDOUT ;YES, PUT LINK ON BACKGROUND TASK'S QUEUE
SETZM T1 ;NOTE THAT DATA WILL BE SENT LATER
RETSKP ;DONE, RETURN SUCCESS
;ADDOUT - ROUTINE TO ADD A LOGICAL LINK BLOCK TO THE BACKGROUND TASK'S
; "OUTPUT REMAINING" QUEUE (OUTQUE).
;
;ACCEPTS IN T1/ LOGICAL LINK BLOCK ADDRESS
; CALL ADDOUT
;RETURNS: +1 ALWAYS
ADDOUT::JN LLQUE,(T1),R ;DONE IF ALREADY QUEUED
LOCK OUTLOK ;PREVENT OTHER PROCESSES FROM HANDLING THE Q
SKIPN T4,OUTQUE ;ANYTHING ON THE QUEUE YET ?
JRST [ HRRM T1,OUTQUE ;NO, SAVE NEW HEAD OF QUEUE
HRLM T1,OUTQUE ;SAVE INITIAL TAIL OF QUEUE
JRST ADOUT2 ] ;GO CLEAR POINTER TO NEXT BLOCK ON CHAIN
HLRZS T4 ;KEEP JUST THE TAIL OF THE QUEUE
STOR T1,LLOUT,(T4) ;MAKE TAIL POINT TO NEW BLOCK
HRLM T1,OUTQUE ;SAVE NEW TAIL
ADOUT2: SETZRO LLOUT,(T1) ;CLEAR POINTER TO NEXT BLOCK IN NEW TAIL
SETONE LLQUE,(T1) ;NOTE THAT THIS BLOCK IS ON THE QUEUE
UNLOCK OUTLOK ;PERMIT ACCESS TO QUEUE AGAIN
RET ;RETURN
;OUTSEG - ROUTINE TO OUTPUT A SEGMENT FOR AN INTERNAL LINK
;
;ACCEPTS IN T1/ ADDRESS OF LOGICAL LINK BLOCK
; CALL OUTSEG
;RETURNS: +1 FAILED, SCHEDULER TEST IN T1
; +2 SUCCESS, WITH SEGMENT AWAY
OUTSEG::STKVAR <OSGLLB,OSGSIZ,OSGBLK>
MOVEM T1,OSGLLB ;SAVE LOGICAL LINK ADDRESS
; CHECK TO SEE IF A CLOSE IS IN PROGRESS
MOVE T1,OSGLLB ;GET ADDRESS OF LOGICAL LINK BLOCK
CALL CHKCIP ;SEE IF CLOSE IS IN PROGRESS
; COMPUTE SIZE OF SEGMENT AND ASSIGN SPACE
MOVE T4,OSGLLB ;GET LOGICAL LINK BLOCK ADDRESS
LOAD T3,LLOCT,(T4) ;GET NUMBER OF BYTES REMAINING TO BE SENT
LOAD T4,LLSWG,(T4) ;GET MAXIMUM SEGMENT SIZE FOR THIS LINK
CAILE T3,(T4) ;CAN ALL REMAINING DATA BE SENT ?
MOVEI T3,(T4) ;NO, JUST SEND MAXIMUM AMOUNT FOR ONE SEGMENT
MOVEM T3,OSGSIZ ;SAVE MESSAGE SIZE
MOVEI T1,<<MSHDR+DTMLEN>*4+3>(T3) ;COMPUTE BYTES REQUIRED
LSH T1,-2 ;CONVERT TO WORDS
CALL GETRES ;GET ONE
JRST [ BUG(NSPFRE)
CALL TIMWAT ;FORM STANDARD SCHEDULER TEST WORD
RET ] ;AND RETURN WITH WAIT TEST IN T1
MOVEM T1,OSGBLK ;SAVE ADDRESS OF MESSAGE BLOCK
; SET UP COUNTS AND POINTERS IN MESSAGE HEADER
MOVEI T2,MSHDR(T1) ;GET BEGINNING OF DATA STORAGE
HRLI T2,(<POINT 8,>) ;FORM BYTE POINTER
MOVE T1,OSGLLB ;GET BACK LL BLOCK
MOVEM T2,LLBPTR(T1) ;SAVE WORK POINTER
SETZM LLBPCT(T1) ;INIT COUNT
MOVE T3,OSGSIZ ;GET # OF BYTES TO GO
LOAD T2,LLOCT,(T1) ;GET # OF BYTES REMAINING IN BUFFER
SUBI T2,0(T3) ;COMPUTE # LEFT
STOR T2,LLOCT,(T1) ;SAVE FOR NEXT OUTPUT
CALL MAKFLG ;GO MAKE FLAGS FOR THIS MESSAGE
MOVE T3,OSGBLK ;GET MESSAGE BLOCK ADDRESS
MOVE T4,OSGSIZ ;GET MESSAGE COUNT
CALL MAKMSG ;GO ASSEMBLE NON-DATA PARTS OF MESSAGE
; ADD THE DATA TO THE MESSAGE
MOVE T4,OSGLLB ;GET LOGICAL LINK BLOCK ADDRESS
LOAD T1,LLBPO,(T4) ;GET CURRENT OUTPUT POINTER
MOVE T2,LLBPTR(T4) ;GET DESTINATION POINTER
MOVE T3,OSGSIZ ;GET COUNT
CALL NETMOV ;ADD DATA BYTES TO THE MESSAGE
MOVE T4,OSGLLB ;GET ADDRESS OF LOGICAL LINK BLOCK AGAIN
STOR T1,LLBPO,(T4) ;STORE NEW OUTPUT POINTER TO REMAINDER OF BUFFER
; ..
; ..
; COMPUTE REMAINING QUANTITIES FOR MESSAGE HEADER AND SEND THE SEGMENT
MOVE T2,OSGBLK ;GET ADDRESS OF SEGMENT AGAIN
MOVX T3,MSDAT ;GET MESSAGE TYPE (DATA MESSAGE)
STOR T3,MSTOM,(T2) ;STORE MESSAGE TYPE IN MESSAGE HEADER
MOVE T1,OSGLLB ;GET LOGICAL LINK BLOCK ADDRESS
MOVE T3,LLBPCT(T1) ;GET COUNT OF BYTES IN THE MESSAGE
SUBI T3,5 ;ACCOUNT FOR NSP OVERHEAD
STOR T3,MSDTC,(T2) ;STORE COUNT INTO MESSAGE HEADER
CALL SNDSEG ;SEND THE MESSAGE
; SEGMENT SENT. RETURN SUCCESS.
RETSKP ;DONE.
;CHKCIP - ROUTINE TO CHECK TO SEE IF A CLOSE IS IN PROGRESS
;
;ACCEPTS IN T1/ ADDRESS OF LOGICAL LINK BLOCK
; CALL CHKCIP
;RETURNS: +1 ALWAYS, WITH LLFEM SET IF NEEDED
CHKCIP: ASUBR <CIPLLB>
MOVE T1,CIPLLB ;GET LOGICAL LINK BLOCK ADDRESS
JE LLCIP,(T1),R ;IF CLOSE NOT IN PROGRESS, DONE.
LOAD T3,LLOCT,(T1) ;GET NUMBER OF BYTES REMAINING TO BE SENT
LOAD T4,LLSWG,(T1) ;GET MAXIMUM SEGMENT SIZE FOR THIS LINK
CAMLE T3,T4 ;SENDING LAST SEGMENT FOR THIS BUFFER ?
RET ;NO, WAIT FOR LAST SEGMENT TO SET EOM
SETONE LLFEM,(T1) ;YES, SET END OF MESSAGE NEEDED
RET ;AND DONE.
SUBTTL Internal Links - Provide a Buffer for Input
XNSINB: ASUBR <IBPLID,IBPBUF,IBPCNT,IBPLLB>
; LOCK LOGICAL LINK BLOCK
IBP001: MOVE T1,IBPLID ;GET LINK ID
CALL INTLOK ;GO CHECK LINK STATE
RET ;FAILED, RETURN ERROR
MOVEM T1,IBPLLB ;SAVE LOGICAL LINK BLOCK ADDRESS
; CHECK THAT WE PREVIOUSLY REQUESTED A BUFFER AND DID NOT GET IT
MOVE T1,IBPLLB ;GET LOGICAL LINK BLOCK ADDRESS
JN LLDRB,(T1),IBP010 ;DRIVER REFUSED BUFFER PREVIOUSLY ?
BUG (NSPEXB)
RETBAD (NSPX5) ;RETURN FAILURE TO DRIVER
IBP010: SETZRO LLDRB,(T1) ;CLEAR "DRIVER REFUSED TO PROVIDE BUFFER" FLAG
; STORE NEW BUFFER ADDRESS, COUNT, AND FLAGS
MOVE T1,IBPLLB ;GET LOGICAL LINK BLOCK ADDRESS
MOVE T4,IBPBUF ;GET NEW BUFFER ADDRESS
STOR T4,LLBFI,(T1) ;SAVE IN LINK BLOCK
HRLI T4,(POINT 8,) ;FORM POINTER TO FIRST BYTE IN THIS BUFFER
STOR T4,LLBPI,(T1) ;SAVE AS POINTER TO NEXT BYTE TO BE INPUT
MOVE T4,IBPCNT ;GET COUNT AND FLAGS
STOR T4,LLICT,(T1) ;STORE COUNT OF BYTES CURRENTLY LEFT IN BUFFER
STOR T4,LLIIC,(T1) ;ALSO STORE AS INITIAL COUNT OF BYTES IN BUFFER
TXNE T4,NS%TRN ;DRIVER WANT MESSAGES TRUNCATED IF TOO LONG ?
JRST [ SETONE LLTRC,(T4) ;YES, NOTE TRUNCATION DESIRED
JRST .+1 ] ;AND CONTINUE
; TRY TO DO INPUT NOW THAT A BUFFER IS AVAILABLE
MOVE T1,IBPLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL INTSET ;DO AS MUCH INPUT AS POSSIBLE
JRST [ MOVE T1,IBPLLB ;FAILED, LINK WENT AWAY. GET BLOCK ADDRESS
CALLRET BLKULK] ;UNLOCK THE BLOCK AND RETURN FAILURE
; DONE, UNLOCK LOGICAL LINK BLOCK AND RETURN
MOVE T1,IBPLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKULK ;UNLOCK THE BLOCK
RETSKP ;DONE
SUBTTL Internal Links - Send and Receive Interrupt Messages
XNSRIN: ASUBR <RIMLID,RIMBUF,RIMCNT,RIMLLB>
; LOCK LOGICAL LINK BLOCK
MOVE T1,RIMLID ;GET LINK ID
CALL INTLOK ;GO LOCK THE LINK
RET ;FAILED, RETURN ERROR
MOVEM T1,RIMLLB ;SAVE LOGICAL LINK BLOCK
; READ THE INTERRUPT MESSAGE
MOVE T1,RIMLLB ;GET LOGICAL LINK BLOCK ADDRESS
MOVE T2,[IFIW+[IDPB T2,T3] ;GET ROUTINE TO STORE BYTES
RET] ; AND RETURN
MOVE T3,RIMBUF ;GET ADDRESS OF DRIVER'S BUFFER
HRLI T3,(POINT 8,) ;FORM POINTER TO BUFFER
CALL RDINT ;GO READ INTERRUPT MESSAGE
RET ;FAILED, RETURN ERROR
MOVEM T3,RIMCNT ;SAVE NUMBER OF BYTES READ
MOVE T1,RIMLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKULK ;UNLOCK THE BLOCK
MOVE T1,RIMCNT ;RESTORE COUNT
RETSKP ;DONE, RETURN
XNSSIN: ASUBR <SINLID,SINBUF,SINCNT,SINLLB>
; LOCK THE LOGICAL LINK BLOCK
MOVE T1,SINLID ;GET LINK ID
CALL INTLOK ;GO LOCK THE LINK
RET ;FAILED, RETURN ERROR
MOVEM T1,SINLLB ;SAVE LOGICAL LINK BLOCK ADDRESS
; SEND THE INTERRUPT MESSAGE
MOVE T1,SINLLB ;GET LOGICAL LINK BLOCK ADDRESS
MOVE T2,[IFIW![ILDB T2,T3]
RET ] ;ROUTINE TO GET BYTES
MOVE T3,SINBUF ;GET BUFFER ADDRESS
HRLI T3,(POINT 8,) ;FORM POINTER TO INTERRUPT MESSAGE
MOVE T4,SINCNT ;GET COUNT
CALL SNINT ;SEND THE MESSAGE
RET ;FAILED, RETURN ERROR
MOVE T1,SINLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKULK ;UNLOCK THE BLOCK
RETSKP ;DONE, RETURN SUCCESS
SUBTTL Internal Links - Read Link Status
XNSRLS: ASUBR <RLSLID,RLSLLB,RLSSTS>
; LOCK THE LOGICAL LINK BLOCK
MOVE T1,RLSLID ;GET LINK ID
CALL INTLOK ;LOCK THE LOGICAL LINK
RET ;FAILED, RETURN ERROR TO CALLER
MOVEM T1,RLSLLB ;SAVE LINK ADDRESS
; GET THE LINK STATUS
MOVE T1,RLSLLB ;GET LOGICAL LINK ADDRESS
CALL RDSTS ;GET THE STATUS
MOVEM T3,RLSSTS ;SAVE STATUS
; UNLOCK THE LINK BLOCK AND CONVERT ERROR CODE
CALL BLKULK ;UNLOCK THE LOGICAL LINK BLOCK
HRRZ T1,RLSSTS ;GET NSP ERROR CODE
CALL NSPERR ;CONVERT TO TOPS20 ERROR CODE
RETBAD () ;FAILED
HRR T3,T1 ;COPY ERROR CODE
HLL T3,RLSSTS ;COPY STATUS BITS
RETSKP ;DONE, RETURN SUCCESS
SUBTTL Internal Links - Read Maximum Link Segment Size
XNSRSS: ASUBR <RSSLID,RSSLLB,RSSERR,RSSSIZ>
; LOCK THE LOGICAL LINK BLOCK
MOVE T1,RSSLID ;GET LINK ID
CALL INTLOK ;LOCK THE LINK BLOCK
RET ;FAILED, RETURN TO DRIVER
MOVEM T1,RSSLLB ;SAVE LOGICAL LINK BLOCK ADDRESS
; CHECK LINK STATE AND GET SEGMENT SIZE
MOVE T1,RSSLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL MTRNCK ;GO CHECK LINK STATE
JRST [ MOVEM T1,RSSERR ;BAD STATE, SAVE ERROR CODE
MOVE T1,RSSLLB ;GET BLOCK ADDRESS
CALL BLKULK ;UNLOCK THE LINK BLOCK
MOVE T1,RSSERR ;RESTORE ERROR CODE
RET ] ;RETURN ERROR TO DRIVER
LOAD t4,LLSWG,(T1) ;GET MAX SEGMENT SIZE
MOVEM t4,RSSSIZ ;SAVE SEGMENT SIZE
CALL BLKULK ;UNLOCK THE LINK BLOCK
MOVE T1,RSSSIZ ;RESTORE SEGMENT SIZE
RETSKP ;AND DONE
SUBTTL Internal Links - Read Optional Data
XNSRDA::ASUBR <RDALID,RDABUF,RDALLB,RDACNT>
STKVAR <RDASRC,RDADST>
; LOOK UP THE LOGICAL LINK BLOCK
RDA001: LLLOCK ;LOCK THE LOGICAL LINK TREE
MOVE T1,RDALID ;GET LINK ID
SETOM T2 ;ANY LINK
CALL LLLKUP ;GO FIND BLOCK
JRST [ LLLULK ;NOT IN RUN STATE, CANNOT DO ANY OUTPUT
RET ] ;UNLOCK THE TREE AND RETURN FAILURE
MOVEM T1,RDALLB ;SAVE LOGICAL LINK BLOCK ADDRESS
; LOCK THE BLOCK
MOVE T1,RDALLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKLOK ;GO LOCK THE LOGICAL LINK BLOCK
JRST [ LLLULK ;CANNOT LOCK IT NOW, UNLOCK THE TREE
MDISMS ;WAIT UNTIL CONDITION SATISFIED
JRST RDA001 ] ;TRY AGAIN TO PROCESS ACK'S
LLLULK ;BLOCK IS NOW LOCKED. UNLOCK THE TREE
; SET UP TO COPY OPTIONAL DATA
MOVE T1,RDALLB ;GET LOGICAL LINK BLOCK ADDRESS
LOAD T4,LLUCT,(T1) ;GET COUNT OF BYTES IN OPTIONAL DATA
MOVEM T4,RDACNT ;SAVE COUNT OF BYTES TO BE MOVED
LOAD T3,LLOPT,(T1) ;GET ADDRESS OF OPTIONAL DATA
MOVE T2,RDABUF ;GET ADDRESS OF DESTINATION BUFFER
MOVE T1,[POINT 8,(T2)] ;FORM POINTER TO DESTINATION STRING
MOVEM T1,RDADST ;SAVE DESTINATION POINTER
MOVE T1,[POINT 8,(T3)] ;FORM POINTER TO SOURCE STRING
MOVEM T1,RDASRC ;SAVE SOURCE POINTER
; COPY THE OPTIONAL DATA TO THE DRIVER BUFFER
RDA010: SOJL T4,RDA020 ;IF NO MORE BYTES TO MOVE ALL DONE
ILDB T1,RDASRC ;GET A BYTE
IDPB T1,RDADST ;SAVE THE BYTE IN DRIVER'S BUFFER
JRST RDA010 ;GO DO THE NEXT BYTE
; HERE WHEN DONE MOVING THE STRING
RDA020: MOVE T1,RDALLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKULK ;UNLOCK THE BLOCK
MOVE T1,RDACNT ;RETURN COUNT TO DRIVER
RETSKP ;DONE, RETURN SUCCESS
SUBTTL Internal Links - Read Host Name
XNSRHN: ASUBR <RHNLID,RHNBUF,RHNLLB,RHNERR>
; LOOK UP THE LOGICAL LINK BLOCK
RHN001: LLLOCK ;LOCK THE LOGICAL LINK TREE
MOVE T1,RHNLID ;GET LINK ID
SETOM T2 ;ANY LINK
CALL LLLKUP ;GO FIND BLOCK
JRST [ LLLULK ;NOT IN RUN STATE, CANNOT DO ANY OUTPUT
RET ] ;UNLOCK THE TREE AND RETURN FAILURE
MOVEM T1,RHNLLB ;SAVE LOGICAL LINK BLOCK ADDRESS
; LOCK THE BLOCK
MOVE T1,RHNLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKLOK ;GO LOCK THE LOGICAL LINK BLOCK
JRST [ LLLULK ;CANNOT LOCK IT NOW, UNLOCK THE TREE
MDISMS ;WAIT UNTIL CONDITION SATISFIED
JRST RHN001 ] ;TRY AGAIN TO PROCESS ACK'S
LLLULK ;BLOCK IS NOW LOCKED. UNLOCK THE TREE
; GET HOST NAME AND PLACE INTO DRIVER BUFFER
MOVE T1,RHNLLB ;GET LOGICAL LINK BLOCK ADDRESS
LOAD T2,LLHST,(T1) ;GET FOREIGN HOST NAME
CALL TSTLCL ;IS THIS A LOCAL CONNECTION ?
MOVEI T2,OURNAM ;YES, GET ADDRESS OF OUR NAME STRING
MOVE T1,RHNBUF ;GET DRIVER BUFFER ADDRESS
SETOM T3 ;ASCIZ STRING, NO COUNT
CALL MOVSTR ;COPY THE STRING
; UNLOCK THE LINK BLOCK AND RETURN
MOVE T1,RHNLLB ;GET LOGICAL LINK BLOCK
CALL BLKULK ;UNLOCK THE BLOCK
RETSKP ;DONE, RETURN SUCCESS
SUBTTL Internal Links - Close a link
XNSCLZ: ASUBR <CLILID,CLIRSN,CLIBUF,CLICNT>
STKVAR <CLILLB,CLIERR>
; LOOK UP THE LOGICAL LINK BLOCK
CLI001: LLLOCK ;LOCK THE LOGICAL LINK TREE
MOVE T1,CLILID ;GET LINK ID
SETOM T2 ;ANY LINK
CALL LLLKUP ;GO FIND BLOCK
JRST [ LLLULK ;NOT IN RUN STATE, CANNOT DO ANY OUTPUT
RETBAD (NSPX02) ] ;UNLOCK THE TREE AND RETURN FAILURE
MOVEM T1,CLILLB ;SAVE LOGICAL LINK BLOCK ADDRESS
LLLULK ;BLOCK IS NOW LOCKED. UNLOCK THE TREE
; HANDLE ANY OUTSTANDING ACKS
MOVE T1,CLILLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL MOVSEG ;HANDLE ACK'S
JFCL ;IGNORE FAILURE
; DISPATCH TO SPECIFIC ROUTINE BASED ON LINK STATE
MOVE T1,CLILLB ;GET LOGICAL LINK BLOCK ADDRESS
LOAD T2,LLSTA,(T1) ;GET LOGICAL LINK STATE
JRST @CLIDSP-1(T2) ;DISPATCH TO PROCESSING ROUTINE
; TABLE OF ROUTINES TO DO A CLOSE FOR LINKS IN VARIOUS STATES
CLIDSP: IFIW!CLIDON
IFIW!CLIDON
IFIW!CLIDI
IFIW!CLIRUN
IFIW!CLIWDC
IFIW!CLIDIQ
IFIW!CLIDIR
IFIW!CLIABT
; HERE TO CLOSE AN INTERNAL LINK IN RUN STATE
CLIRUN: MOVE T1,CLILLB ;GET LOGICAL LINK BLOCK ADDRESS
SKIPN CLIRSN ;ABORT CLOSE ?
CALL FRCOUT ;NO, GO FORCE OUT ANY REMAINING DATA
; STORE REASON CODE IN LOGICAL LINK BLOCK
MOVE T4,CLIRSN ;GET REASON FROM DRIVER
CAMN T4,[-1] ;WANT DEFAULT REASON ?
CLIDI: MOVX T4,.DCX9 ;YES, SUPPLY DEFAULT
MOVE T1,CLILLB ;GET ADDRESS OF LOGICAL LINK BLOCK
STOR T4,LLRSN,(T1) ;STORE REASON CODE IN LOGICAL LINK
; SEND A DISCONNECT-INITIATE MESSAGE TO THE REMOTE NSP
CLIDIQ:
CLRN10: MOVE T1,CLILLB ;GET LOGICAL LINK BLOCK ADDRESS
SETZM T2 ;ASSUME SYNCHRONOUS CLOSE
SKIPE CLIRSN ;ABORT CLOSE ?
SETOM T2 ;YES, NOTE SO
MOVE T3,CLICNT ;GET COUNT OF BYTES IN OPTIONAL DATA
MOVE T4,CLIBUF ;GET ADDRESS OF BUFFER WITH DATA
CALL CLZSDI ;GO SEND A DI
JRST [ SKIPE CLIRSN ;ABORT?
JRST CLIABT ;YES. PROCEED AS IF CONFIRMED
MDISMS ;CANNOT SEND IT, WAIT A WHILE
JRST CLRN10 ] ;TRY TO SEND DI AGAIN
; ..
; ..
; IF ABORT CLOSE, KILL LINK QUEUES. ELSE WAIT FOR DC FROM REMOTE NSP
CLIWDC: MOVE T1,CLILLB ;GET ADDRESS OF LOGICAL LINK BLOCK
SKIPE CLIRSN ;ABORT CLOSE ?
JRST [ SETONE LLSDE,(T1) ;YES, DISSOCIATE PROCESS FROM LINK
CALL IFLUSH ;KILL ALL LINK QUEUES AND DISPOSE OF BUFFERS
CALL BLKULK ;UNLOCK THE BLOCK
JRST CLRN20 ] ;AND CONTINUE WITH CLEANUP
MOVEI T2,CHKDCR ;GET TEST ADDRESS
CALL MAKTST ;MAKE STANDARD SCHEDULER TEST WORD
MOVE T2,CLILLB ;GET BACK LOGICAL LINK BLOCK ADDRESS
CALL INTWAT ;WAIT FOR DC TO ARRIVE
JRST [ MOVEM T1,CLIERR ;SAVE ERROR CODE
MOVE T1,CLILLB ;GET LINK BLOCK ADDRESS
CALL BLKULK ;UNLOCK THE BLOCK
MOVE T1,CLIERR ;RESTORE ERROR CODE
RETBAD () ] ;FAILED, OTHER END MUST HAVE ABORTED LINK
; DC HAS ARRIVED - CHECK REASON CODE
CLIABT:
CLIDIR: MOVE T4,CLILLB ;GET LOGICAL LINK BLOCK ADDRESS
LOAD T1,LLRSN,(T4) ;GET REASON CODE
CAIE T1,0 ;NORMAL DISCONNECT, OR
CAIN T1,.DCX42 ; REPLY TO DI MESSAGE ?
JRST CLRN15 ;YES, GO ON
SKIPN CLIRSN ;NO, WAS THIS AN ABORT CLOSE ?
JRST [ CALL BLKULK ;NO, SYNCHRONOUS CLOSE FAILED.
RETBAD (DCNX11) ] ;RETURN ERROR TO DRIVER
; KILL LINK QUEUES AND DELETE LINK BLOCK
CLIDON:
CLRN15: MOVE T1,CLILLB ;GET ADDRESS OF LOGICAL LINK BLOCK
CALL IFLUSH ;KILL LINK QUEUES AND DISPOSE OF BUFFERS
LLLOCK ;LOCK THE LOGICAL LINK TREE
CALL DELNOD ;RELEASE THE LINK BLOCK
LLLULK ;UNLOCK THE TREE
OKINT ;IN LIEU OF OKINT IN BLKULK THAT'S NOT DONE
; ACCOUNT FOR REMOVAL OF A LINK
CLRN20: DECR DCCUR ;DECREMENT LINK COUNT
RETSKP ;DONE, RETURN
;FRCOUT - ROUTINE TO FORCE OUT ANY REMAINING DATA FOR AN INTERNAL LINK
;
;ACCEPTS IN T1/ ADDRESS OF LOGICAL LINK BLOCK (LOCKED)
; CALL FRCOUT
;RETURN: +1 ALWAYS, WITH ALL DATA SENT
FRCOUT: ASUBR <FRCLLB>
; SEE IF ALL DATA HAS ALREADY BEEN SENT
MOVE T1,FRCLLB ;GET LOGICAL LINK BLOCK ADDRESS
JE LLBFO,(T1),FRC010 ;IF ALL DATA SENT, WAIT TILL ALL ACK'ED
; DATA REMAINS TO BE SENT, SO THIS LINK MUST BE ON OUTQUE. JUST
; WAIT UNTIL THE BACKGROUND PROCESS SENDS THE DATA.
SETONE LLCIP,(T1) ;NOTE SYNCHRONOUS CLOSE IN PROGRESS
LOAD T1,LLLNK,(T1) ;GET LINK ID
HRLS T1 ;FORM STANDARD SCHEDULER TEST
HRRI T1,SNOTST ; WORD
MOVE T2,FRCLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL INTWAT ;WAIT FOR ALL DATA TO BE SENT
RET ;LINK WENT AWAY, DONE.
; ALL DATA SENT - WAIT UNTIL ALL SEGMENTS HAVE BEEN ACK'ED
FRC010: MOVE T2,FRCLLB ;GET ADDRESS OF LOGICAL LINK BLOCK
JE LLQOU,(T2),R ;ALL ACK'D, SO DONE.
LOAD T1,LLLNK,(T2) ;GET LINK ID
HRLS T1 ;FORM STANDARD SCHEDULER TEST
HRRI T1,CHKEMP ; WORD
CALL INTWAT ;WAIT FOR ALL DATA TO BE SENT
RET ;LINK WENT AWAY, DONE
RET ;DONE, RETURN
;IFLUSH - ROUTINE TO FLUSH ALL BUFFERS AND QUEUES FOR INTERNAL LINKS
;
;ACCEPTS IN T1/ ADDRESS OF LOGICAL LINK BLOCK
; CALL IFLUSH
;RETURNS: +1 ALWAYS
IFLUSH: ASUBR <IFLLLB>
; DISPOSE OF ANY INPUT BUFFER STILL CONTROLLED BY NSP
MOVE T4,IFLLLB ;GET LOGICAL LINK BLOCK ADDRESS
JE LLBFI,(T4),IFL010 ;IF NO INPUT BUFFER THEN GO CHECK OUTPUT BUFFER
LOAD T1,LLDRV,(T4) ;GET DRIVER CORRELATION CODE
LOAD T2,LLBFI,(T4) ;GET BUFFER ADDRESS
LOAD T3,LLIIC,(T4) ;GET INITIAL COUNT OF BYTES
OPSTR <SUB T3,>,LLICT,(T4) ;COMPUTE NUMBER OF BYTES IN BUFFER
TXO T3,NS%ABT ;NOTE THAT LINK NOT USABLE
LOAD T4,LLVEC,(T4) ;GET DRIVER VECTOR ADDRESS
CALL @.NSDAT(T4) ;NOTIFY DRIVER OF LINK ABORT
; HERE TO DISPOSE OF OUTPUT BUFFER - NOTE THAT THERE SHOULD NOT BE
; AN OUTPUT BUFFER IF THIS IS A SYNCHRONOUS CLOSE.
IFL010: MOVE T4,IFLLLB ;GET LOGICAL LINK BLOCK ADDRESS
JE LLBFO,(T4),IFL020 ;ALL SET IF NO OUTPUT BUFFER
LOAD T1,LLDRV,(T4) ;GET DRIVER CORRELATION CODE
LOAD T2,LLBFO,(T4) ;GET BUFFER ADDRESS
LOAD T3,LLVEC,(T4) ;GET DRIVER VECTOR ADDRESS
CALL @.NSOBE(T3) ;TELL DRIVER TO DISPOSE OF BUFFER
; HERE TO DISPOSE OF OTHER LINK QUEUES
IFL020: MOVE T1,IFLLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALLRET FLUSH ;FLUSH THE QUEUES AND RETURN TO CALLER
;INTLOK - ROUTINE TO LOCK AN INTERNAL LOGICAL LINK
;
;ACCEPTS IN T1/ LINK IDENTIFIER
; CALL INTLOK
;RETURNS: +1 FAILED, COULD NOT LOCK THE LINK
; +2 SUCCESS, WITH T1/ ADDRESS OF LOGICAL LINK BLOCK
INTLOK: ASUBR <ILKLID,ILKLLB>
; GET THE ADDRESS OF THE LOGICAL LINK BLOCK
ILK001: LLLOCK ;LOCK THE LOGICAL LINK TREE
MOVE T1,ILKLID ;GET LINK ID
CALL CHKLNK ;GO CHECK LINK STATE
JRST [ LLLULK ;NOT IN RUN STATE, CANNOT DO ANY OUTPUT
RET ] ;UNLOCK THE TREE AND RETURN FAILURE
MOVEM T1,ILKLLB ;SAVE LOGICAL LINK BLOCK ADDRESS
; LOCK THE BLOCK
MOVE T1,ILKLLB ;GET LOGICAL LINK BLOCK ADDRESS
CALL BLKLOK ;GO LOCK THE LOGICAL LINK BLOCK
JRST [ LLLULK ;CANNOT LOCK IT NOW, UNLOCK THE TREE
MDISMS ;WAIT UNTIL CONDITION SATISFIED
JRST ILK001 ] ;TRY AGAIN TO PROCESS ACK'S
LLLULK ;BLOCK IS NOW LOCKED. UNLOCK THE TREE
; RETURN THE ADDRESS OF THE LINK BLOCK
MOVE T1,ILKLLB ;GET BLOCK ADDRESS
RETSKP ;DONE, RETURN SUCCESS
TNXEND
END