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10,7/dil/dilsrc/ttt.mac
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UNIVERSAL TTTUNV DECnet Task-to-Task Interface for COBOL and FORTRAN
COMMENT #
COPYRIGHT (C) DIGITAL EQUIPMENT CORPORATION 1983, 1986.
ALL RIGHTS RESERVED.
THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND
COPIED ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH
THE INCLUSION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE OR
ANY OTHER COPIES THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE
AVAILABLE TO ANY OTHER PERSON. NO TITLE TO AND OWNERSHIP OF THE
SOFTWARE IS HEREBY TRANSFERRED.
THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT
NOTICE AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL
EQUIPMENT CORPORATION.
DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF
ITS SOFTWARE ON EQUIPMENT THAT IS NOT SUPPLIED BY DIGITAL.
#
SALL
T0=0 ;Function value return
T1=1 ;These ACs are saved and restored by this subroutine
T2=2 ;...
T3=3 ;...
T4=4 ;...
T5=5 ;...
ARG=16 ;Argument list pointer
P=17 ;Push down stack pointer
; Compile-time switches:
TCK==-1 ;Include type-checking code
MAXLL==^D20 ;Maximum number of logical links allowed at one time
DISTIM==^D5000 ;Period between checks for lost interrupts
TSIZE==^D1000 ;Size of temporary strings (used for DECnet file
;... specifications and for binary-mode data
;... movement)
OTSFNC==-1 ;[35] Try to use FUNCT. in OTS
;[35] Turn this off only if there is no OTS
IFNDEF FTT10,<FTT10==0> ;Non-zero if TOPS-10 support
IFNDEF FTT20,<FTT20==0> ;Non-zero if TOPS-20 support
IFN FTT20,<IFN FTT10,<PRINTX ?Cannot have FTT10 and FTT20 both turned on!>>
IFE FTT20,<IFE FTT10,<PRINTX ?Must have one of FTT10 or FTT20 turned on!>>
; Interrupt system (TOPS-20 only):
; Note that we have to avoid getting clobbered by PA1050 if we are called by
; a compatible program. See LEVTAB, CHNTAB, and PSITAB in PAT.MAC.
;[35] See PSINIT, below. The following are attempted to get an interrupt
;[35] channel to use: get one from the OTS via FUNCT. (only if OTSFNC
;[35] switch is on), get one from PA1050 if it is in memory via COMPT.
;[35] function code 6, get one from the existing table of interrupts if
;[35] there is one, or make interrupt tables and then use an interrupt
;[35] from them.
;[46] To read the interrupt tables, we will attempt to do a RIR%. If that
;[46] fails, we will do an XRIR%. However, to SET them ourselves, if they do
;[46] not already exist, we will try the XSIR% first, doing a SIR% if that
;[46] fails. This is done because the monitor will let us do an XRIR% of tables
;[46] set by a SIR%, causing chaos, but will not let us do a RIR% of tables set
;[46] by XSIR%. The tables are incompatible.
PSILEV==^D3 ;Use level PSILEV (must be 3 to cooperate with PA1050)
PSINUM==^D2 ;Use number PSINUM (PA1050 requires <= 2)
IFN OTSFNC,< ;[35] FUNCT. codes for handling interrupt channels:
GPSI==17 ;[35] Get TOPS20 interrupt channel from the OTS
RPSI==20 ;[35] Return TOPS20 interrupt channel to OTS
> ;[35] end of IFN OTSFNC
; Event flag definitions:
EV.CON==1 ;Connect event has occurred
EV.ABT==2 ;Abort event has occurred
EV.INT==4 ;Interrupt message is available
EV.DAT==10 ;Data is available
EV.DIS==20 ;A disconnect event has occurred
; Externals:
EXTERN DILRET ;Return kludge for COBOL
IFN OTSFNC,< ;[35] If OTS is used for FUNCT.
EXTERN FUNCT. ;[35] OTS interface port
> ;[35] End of IFN OTSFNC
; Macro to save T1 through T4 at the beginning of subroutine execution
; and restore them just prior to returning to caller.
DEFINE SAVAC, <
PUSH P,T1 ;Save T1
PUSH P,T2 ;Save T2
PUSH P,T3 ;Save T3
PUSH P,T4 ;Save T4
XMOVEI T1,[ POP P,T4 ;[51]Return
POP P,T3 ; from
POP P,T2 ; subroutine
POP P,T1 ; comes
POPJ P,] ;[51] here to restore registers.
PUSH P,T1 ;[51]
>
; Macro used to return from a subroutine.
DEFINE RETURN (B), <
JRST [PUSH P,[<B>] ;Status code
CALL DILRET ;Call COBOL return kludge
POP P,0 ;Set up function return value
RET ] ;Return
>
; Macro to facilitate system dependant code isolation
DEFINE T10,<IFN FTT10>
DEFINE T20,<IFN FTT20>
; Macro to use DISMS% JSYS call to simulate HIBER UUO if TOPS-10 version
T10,<DEFINE DISMS%,<
TLO T1,(HB.RIO) ;; Wake on I/O complete
HIBER T1, ;; Hibernate
JFCL ;; Should never happen
>>
; Version number control
; "version" macro in Bliss modules:
; who updated: bits 33-35 ( 3 bits) Who updated (0=DEC)
; major verion: bits 24-32 ( 9 bits) Major verison number
; minor version: bits 18-23 ( 6 bits) Minor version number
; edit number: bits 0-17 (18 bits) Edit number
DEFINE VERSIO (who,maj,min,num),<
BYTE (3)who(9)maj(6)min(18)num
>
; "new_version" macro in Bliss modules:
DEFINE NEW%VE (major,minor),<
%%%MAJ==major
%%%MIN==minor
>
; "edit" macro in Bliss modules
DEFINE EDIT (number,date,maker),<
%%%EDT==number
>
; "mark_versions" macro in Bliss modules
DEFINE MARK%V (fac),<
EXTERN fac'VER ;; (fac'$k_version)
;; ... Defined in DITHST.BLI
fac'MVR==VERSIO (0,%%%MAJ,%%%MIN,%%%EDT) ;; (fac'$module_version)
fac'GVR==fac'VER ;;(fac'$g_version)
>
; Edit History:
new%ve 1,0
edit 1,'14-Oct-82','Charlotte L. Richardson'
; %( Change version and revision standards. All modules. )%
edit 4,'27-Oct-82','Charlotte L. Richardson'
; %( Remove CLOSF% workaround in NFCLS. TTT.MAC )%
edit 7,'29-Oct-82','Charlotte L. Richardson'
; %( Check that character strings are only ASCII. TTT.MAC and DAPPER.B36 )%
edit 12,'5-Nov-82','Charlotte L. Richardon'
; %( Check interrupts before stealing one. TTT.MAC )%
edit 13,'5-Nov-82','Charlotte L. Richardson'
; %( Fix edit 12! TTT.MAC )%
edit 16,'16-Nov-82','Charlotte L. Richardson'
; %( Fix typo in OBJID processing of NFOPP. QAR 4. TTT.MAC )%
edit 17,'17-Nov-82','Charlotte L. aRichardson'
; %( Correct AIC% JSYS in interrupt setup when PA1050 is not involved.
; QAR 4. TTT.MAC )%
edit 30,'23-Nov-82','Charlotte L. Richardson'
; %( Modify TTT.MAC to code around bug in field-image MACRO. QAR 18.
; TTT.MAC )%
edit 35,'1-Dec-82','Charlotte L. Richardson'
; %( Use FUNCT. to get an interrupt channel if possible. QAR 13. TTT.MAC )%
edit 37,'9-Dec-82','Charlotte L. Richardson'
; %( Use XRIR%/XSIR% JSYSes in the interrupt code and do RIR%/SIR% if these
; fail to avoid being burned by FOROTS v. 7. TTT.MAC )%
edit 41,'17-Dec-82','Charlotte L. Richardson'
; %( If node name is missing in call to active open routine, create network
; file specification with a leading dash. QAR 27. TTT.MAC )%
edit 46,'5-Jan-83','Charlotte L. Richardson'
; %( More of edit 37. QAR 29. TTT.MAC )%
edit 47,'6-Jan-83','Charlotte L. Richardson'
;%( Prefix JSYS errors with an explanation. TTT.MAC )%
edit 51,'17-Jan-83','Charlotte L. Richardson'
;%( Change MOVEIs to XMOVEIs so that this code can run in a nonzero
; section. TTT.MAC )%
edit 56,'24-Jan-83','Charlotte L. Richardson'
;%( Correct file names created for TOPS-20 tasks. NFOPU and NFOPP in TTT.MAC )%
edit 60,'2-Feb-83','Charlotte L. Richardson'
;%( Fix typo in edit 56. TTT.MAC )%
edit 61,'9-Mar-83','Charlotte L. Richardson'
;%( Declare version 1. All modules. )%
edit 63,'11-Mar-83','Charlotte L. Richardson'
;%( Allow non-word-aligned character strings in TTT.MAC )%
edit 64,'15-Mar-84','Charlotte L. Richardson'
;%( Do not write JSYS errors to the user's terminal in .JSER. )%
new%ve 2,0
edit 65,'11-Apr-84','Sandy Clemens'
;%( Add DIT V2 files to DT2:. Files: DITHST.BLI, DAPPER.B36, TTT.MAC )%
edit 72,'16-May-84','Doug Rayner'
;%( Fix NFINT and NFRCI for TOPS-10. FILES: TTT.MAC, DITHST.BLI )%
edit 111, '04-June-84', 'Doug Rayner'
; %( Code to make sure that NFSND in binary mode would not overflow
; internal buffer TEMPST was not quite right. We didn't overflow
; the buffer, but we gave the user's byte count instead of the
; truncated byte count to the monitor. FILES: TTT.MAC, DILHST.BLI
; )%
edit 104, '8-Oct-84', 'Sandy Clemens'
;%( Add new format of COPYRIGHT notice. FILES: ALL )%
edit 110, '20-Nov-84', 'Sandy Clemens'
;%( On TOPS-10, if a remote node is down, the TTT code (1) in NFOP*
; to open the link (with WAITLY) or (2) await the confirmation of
; the connect (with WAITLY) in NFGND will wait indefinitely. Add
; a check for status .NSSCM (which indicates "no communication") to
; correct this problem. FILES: TTT.MAC. )%
new%ve 2,1
edit 112,'1-Jun-86','Sandy Clemens'
;%( Add sources for version 2.1. Update copyright notices. )%
; End of revision history
mark%v DIT
; Status values:
WARN==0 ; Warning message
SUCC==1 ; Success message
ERR==2 ; Error message
INFO==3 ; Informational message
SEVERE==4 ; Severe (fatal) error message
; Facility code:
DITFAC==^D233 ; DIT facility code (actually decimal)
; Build status value:
; Bits 32 - 35 ( 4): unused
;(Bit 31 ( 1): custdf)
; Bits 18 - 31 (14): facno
; Bit 17 ( 1): facsp
; Bits 3 - 16 (14): code
; Bits 0 - 2 ( 3): sever
DEFINE STACOD (SEVER,FACSP,CODE,FACNO,CUSTDF),<
BYTE (4)0(1)^D<CUSTDF>(13)^D<FACNO>(1)^D<FACSP>(14)^D<CODE>(3)^D<SEVER>
>
SSSUCC==STACOD SUCC,0,0,0,0
; Type checking codes:
.TYPEM==001740,,0 ;Type field mask
.TYPE==270500 ;Type field LDB pointer left half
.OK==0 ;Not specified, always OK
.LG==1 ;Fortran logical
.I1==2 ;One-word integer
.T3==3 ;...
.R1==4 ;One-word real
.T5==5 ;...
.O1==6 ;One-word octal
.LB==7 ;label/procedure address
.R2==10 ;Two-word real
.I2==11 ;Two-word integer
.O2==12 ;Two-word octal
.T13==13 ;...
.CP==14 ;Complex
.ST==15 ;Byte string pointer (ILDB ptr, count)
.T16==16 ;...
.AZ==17 ;ASCIZ string
; Status values for return values:
SYSERR==STACOD SEVERE,1,1,DITFAC,0 ; Same as DAPPER
TOOMNY==STACOD SEVERE,1,2,DITFAC,0 ; Same as DAPPER
INVARG==STACOD SEVERE,1,3,DITFAC,0 ; Same as DAPPER
; codes 4-9 not used by TTT
OVRRUN==STACOD WARN,1,10,DITFAC,0 ; Same as DAPPER
; Up to 100 reserved for DAPPER
CONEVT==STACOD INFO,1,101,DITFAC,0 ; Connect event
ARJEVT==STACOD INFO,1,102,DITFAC,0 ; Abort or reject event
INTEVT==STACOD INFO,1,103,DITFAC,0 ; Interrupt event
DATEVT==STACOD INFO,1,104,DITFAC,0 ; Data event
DSCEVT==STACOD INFO,1,105,DITFAC,0 ; Disconnect event
; Up to 150 reserved for events
ABRTRJ==STACOD SEVERE,1,151,DITFAC,0 ; Abort or reject
INTRCV==STACOD WARN,1,152,DITFAC,0 ; Interrupt data to read first
NOTENF==STACOD ERR,1,153,DITFAC,0 ; Not enough data available
NODATA==STACOD ERR,1,154,DITFAC,0 ; No data available
NOTAVL==STACOD ERR,1,155,DITFAC,0 ; Information is not available
INFOUR==STACOD SEVERE,1,156,DITFAC,0 ; Information is out of range
; Routine return values:
; For anything:
HORROR==SYSERR ; Awful error
; For NFGND:
GDWRNG==INVARG ; Argument is of wrong type
GDOK..==SSSUCC ; No errors
GDCONN==CONEVT ; Connect event
GDABRJ==ARJEVT ; Abort or reject
GDINT.==INTEVT ; Interrupt data available
GDDATA==DATEVT ; Data available
GDDC..==DSCEVT ; Disconnect
; For NFOPA:
OAWRNG==INVARG ; Argument is of wrong type
OAOK..==SSSUCC ; No errors
OA2MNY==TOOMNY ; Too many links or no more interrupt channels
OAABRJ==ABRTRJ ; Abort or reject
; For NFOPB: same as NFOPA
; For NFOP8: same as NFOPA
; For NFOPP: same as NFOPA
; For NFACC:
ACWRNG==INVARG ; An argument is of the wrong type
ACOK..==SSSUCC ; No errors
; For NFRCV:
RCWRNG==INVARG ; Argument is of the wrong type
RCOK..==SSSUCC ; No errors
RCABRJ==ABRTRJ ; Link disconnected or aborted
RCINT.==INTRCV ; Interrupt data received must be read first
RCOVRN==OVRRUN ; Data overrun
RCNENF==NOTENF ; This much data not available
; For NFSND:
SNWRNG==INVARG ; Argument is of the wrong type
SNOK..==SSSUCC ; No errors
; For NFREJ:
RJWRNG==INVARG ; Argument is of the wrong type
RJOK..==SSSUCC ; No errors
; For NFINT:
IDWRNG==INVARG ; Argument is of the wrong type
IDOK..==SSSUCC ; No errors
; For NFRCI:
RIWRNG==INVARG ; Argument is of the wrong type
RIOK..==SSSUCC ; No errors
RINONE==NODATA ; No data available
; For NFCLS:
CLWRNG==INVARG ; Argument is of the wrong type
CLOK..==SSSUCC ; No errors
; For NFINF:
INWRNG==INVARG ; Argument is of the wrong type
INOK..==SSSUCC ; No errors
INNOTA==NOTAVL ; Information not available
INOUTR==INFOUR ; Type is out of range
; Other codes:
WAITLY==1 ; Wait for link
WAITLN==0 ; Do not wait for link
LASCII==0 ; ASCII link type (for NFACC)
LBIN==1 ; Binary link type (for NFACC)
L8BIT==2 ; 8-bit link type (for NFACC)
MSGMSG==1 ; Message-mode transfer
MSGSTM==0 ; Stream-mode transfer
; Information types:
IMIN==^D1 ; Minimum information offset
INODE==^D1 ; Remote node name
IOBJ==^D2 ; Remote object type
IDESCF==^D3 ; Remote object descriptor format
IDESC==^D4 ; Remote object descriptor
IUSER==^D5 ; Remote process user id
IPASS==^D6 ; Remote process password
IACT==^D7 ; Remote process account
IOPT==^D8 ; Optional data
ISEG==^D9 ; Maximum segment size for the link
IABTCD==^D10 ; Maximum segment size for the link
IMAX==^D10 ; Maximum information offset
; Field sizes:
SUSRID==^D39 ; Size of USERID field
SPASWD==^D39 ; Size of PASSWORD field
SACCNT==^D39 ; Size of ACCOUNT field
SHOSTN==^D16 ; Size of HOSTNAME field
T10,< SHOSTN==^D6> ; Size of HOSTNAME field
SOBJID==^D16 ; Size of OBJECTID field
SDESCF==^D16 ; Size of DECnet DESCRIPTOR field
STASKN==^D16 ; Size of TASKNAME field
SOPTDT==^D16 ; Size of OPTIONAL DATA field
SINTDT==^D16 ; Size of INTERRUPT DATA field
;; Local Storage
;; Here are stored the canonical forms of all parameters passed
;; between the calling module and the called module. This
;; structure facilitates the use of these subroutines by many
;; higher-level languages.
;; Currently only FORTRAN and COBOL have been tested.
DEFINE LOWSEG,< ;;Impure data definitions
X NETLN,1 ;;Address of network logical name, the
;; offset into the logical link tables.
X TYPE,1 ;;Address of subroutine-dependent variable
X DESC,1 ;;Byte pointer to ASCIZ representation
;; of complete TOPS20 file spec for
;; the network file
X WAIT,1 ;;Address of WAIT variable: 1=WAIT 0=NOWAIT
X COUNT,1 ;;Address of byte count for message transfers
X DATA,1 ;;Byte pointer for data and status messages
X USIZE,1 ;;Storage for message length unit size
X EOM,1 ;;Address of end of msg flag: 1=END 0=STREAM
X CODE,1 ;;Address of subroutine-dependent variable
X TEMPST,TSIZE ;;Temporary string storage
X NEXT,1 ;;Fairness word for NFGND
X CHAN,1 ;;Channel number chosen for all logical links
X START,1 ;;Set to -1 after PSI initialization
X SLOP,1 ;;Save left-over unused bits (receive binary)
;; Here are stored other local variables.
IFN OTSFNC,< ;;[35] Locations used if FUNCT. is used in OTS
X FNCBLK,7 ;;[35] Argument block for the FUNCT.
X FNCFNC,1 ;;[35] FUNCT. function code
X FNCCOD,1 ;;[35] FUNCT. error code prefix
X FNCSTS,1 ;;[35] FUNCT. return status
X FNCLEV,1 ;;[35] FUNCT. interrupt level number
X FNCINT,1 ;;[35] FUNCT. interrupt address
> ;;[35] End of IFN OTSFNC
T20,< ;; TOPS-20 dependant storage
X T1T2,2 ;;Save ACs during interrupts
X T3T4,2 ;;...
X XBLOCK,3 ;;[37] XSIR%/XRIR% block:
;;[37] word 0: length of block (3)
;;[37] word 1: address of level table
;;[37] word 2: address of channel table
X PC,2 ;;[46] Save PC during interrupts
;;[46] If extended interrupt JSYSes are used:
;;[46] word 0: flags
;;[46] word 1: real PC
X XFLAG,1 ;;[46] Extended interrupt JSYS flag:
;;[46] if 0, not XSIR%; if -1, use XSIR%
X PCPTR,1 ;;[35] Pointer to PC location
X LEVTAB,3 ;;Priority level table: 0, 0, PC for ints.
X CHNTAB,^D36 ;;Interrupt channel table: nothing at first
;[37] X LEVCHN,1 ;;Save level and channel table addresses
X LLJFN,MAXLL ;;JFN of this logical link
;; Per-link data tables:
;**; [63] Change at LLEVNT CLR 11-Mar-83
X LLEVNT,MAXLL ;;[63] 0,,event flags
X LLSTAT,MAXLL ;;Logical link status word
X CODES,MAXLL ;;Byte sizes of links
> ;; End of TOPS-20 dependant storage
T10,< ;;Start of TOPS-10 dependant storage
X BL$NSP,.NSAA3+1 ;;Sapce for NSP. UUO arg block
X BL$CON,.NSCUD+1 ;;Space for NSP. connect block
X BL$SPD,.NSDPN+1 ;;Space for NSP. source process desc. blk.
X BL$DPD,.NSDPN+1 ;;Space for NSP. dest. process desc. blk.
X BL$BEG,0 ;;Mark beginning of string area
X BL$NOD,<1+<<SHOSTN+3>/4>> ;; Space for host name
X BL$USR,<1+<<SUSRID+3>/4>> ;; Space for user ID
X BL$PAS,<1+<<SPASWD+3>/4>> ;; Space for password
X BL$ACC,<1+<<SACCNT+3>/4>> ;; Space for account
X BL$OPT,<1+<<SOPTDT+3>/4>> ;; Space for optional user data
X BL$DPT,<1+<<STASKN+3>/4>> ;; Space for dst. prc. name
X BL$SPT,<1+<<STASKN+3>/4>> ;; Space for src. prc. name
X BL$END,0 ;; Mark end of string area
Y BL$IND,<<SHOSTN+1+4>/5> ;;Space to hold remote host name
Y BL$IOB,0 ;;Space to hold remote object type (LH)
Y BL$IFM,1 ;;Space to hold remote format type (RH)
Y BL$IPP,1 ;;Space to hold remote PPN
Y BL$ITK,<<STASKN+1+4>/5> ;;Space to hold remote task name
Y BL$IUS,<<SUSRID+1+4>/5> ;;Space to hold remote user id
Y BL$IPS,<<SPASWD+1+4>/5> ;;Space to hold remote password
Y BL$IAC,<<SACCNT+1+4>/5> ;;Space to hold remote account
Y BL$IOP,<<SOPTDT+1+4>/5> ;;Space to hold remote user data
Y BL$ILN,0 ;;Length of remote info area
X BL$INF,<BL$ILN*<MAXLL>> ;; Space for NFINF blocks
;; Per-link data tables:
X LLEVNT,MAXLL+1 ;;Byte pointer,,event flags
X LLSTAT,MAXLL+1 ;;Logical link status word
X CODES,MAXLL+1 ;;Byte sizes of links
X NUMLL,1 ;;Number of active logical links
X VECTOR,.PSVIS+1 ;;Location of PSI interrupt vector
>;; End of TOPS-10 dependant storage
> ;End of LOWSEG macro
DEFINE TTTINI,< ;;Module initialization
EXTERN TTTLOW ;;Cause the low segment to appear
TWOSEG 400000 ;;High-segment code (for now)
T20,< SEARCH MONSYM,MACSYM> ;;Search the TOPS-20 universal files
T10,< SEARCH UUOSYM,MACSYM> ;;Search the TOPS-10 universal files
RELOC 400000 ;;Into the high segment (for now)
DEFINE X (A,B),< ;;Macro to expand the low segment
;[30] This is done to get around bug in Polish processing in Macro 53.1.
A==TTTLOW+I ;;[30] Set up address
I==I+B ;;Increment address used up
> ;;End of X macro
DEFINE Y (SYM,SIZ),< ;;Macro to generate offsets in BL$INF
SYM==II
II==II+SIZ
> ;;End of Y macro
;[30] This is done to get around bug in Polish processing in Macro 53.1.
I==0 ;;[30] Start off the addresses
II==0 ;; Start off the offsets
LOWSEG ;;Into the low segment
> ;End of TTTINI macro
PRGEND ;End of TTTUNV
TITLE NFGND Get event information
ENTRY NFGND
SEARCH TTTUNV
TTTINI
EXTERN .UPEVT
T10,< EXTERN .GTINF>
; NFGND (1A)
;
; Get information on asynchronous network events. Wait for any network
; event to occur.
;
; CALL NFGND USING NETLN, WAIT.
; RETCOD = NFGND (NETLN, WAIT)
;
; NETLN integer network logical name, set by the NFOPA,
; NFOPB, NFOP8, or NFOPP routine, or -1 for ALL.
; WAIT integer WAITLY: wait for an event
; WAITLN: return current status.
; Return code and function value:
; GDWRNG: an argument is of the wrong type
; GDOK..: no errors
; GDCONN: connect event, should call NFINF, then NFACC or NFREJ
; active: connect request accepted
; passive: connect request received
; GDABRJ: link aborted or rejected, call NFCLS
; GDINT.: interrupt message available to read, call NFRCI
; GDDATA: data may have been received, call NFRCV
; GDDC..: link disconnected, call NFCLS
; HORROR: JSYS error.
NFGND: SAVAC ;Save ACs
; Parameter set-up code:
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.4 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN GDWRNG ;Anything else is trouble
>; End IFN TCK
L.4: XMOVEI T1,@0(ARG) ;[51]Address of NETLN
MOVEM T1,NETLN ;Save it
MOVE T1,@NETLN ;Get value given
CAML T1,[EXP -2] ;Can not be less than -1
CAILE T1,MAXLL ;Or greater than MAXLL
RETURN GDWRNG ;Return error
; WAIT (1) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get WAIT's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.5 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN GDWRNG ;Anything else is trouble
>; End IFN TCK
L.5: XMOVEI T1,@1(ARG) ;[51]Address of WAIT flag
MOVEM T1,WAIT ;Save it
; End of parameter set-up code.
; GNDCHK (1.1)
; (Also NXTWAT (1.1.2))
; Get network event information.
; NETLN: link number, of -1 for ALL
; WAIT: WAITLN to return current status, or WAITLY to wait for an event
; RETCOD: return code for NFGND
GNDCHK: MOVE T1,@NETLN ;Get link id
JUMPL T1,CHKALL ;If -1, check all links
CALL CHKEVT ;Anything happen?
JUMPN T2,0(T2) ;Yes, process it
MOVE T1,@WAIT ;Get wait code
CAIE T1,WAITLY ;Waiting?
RETURN GDOK.. ;No, return nothing
MOVEI T1,DISTIM ;Yes, wait
DISMS% ;
JRST GNDCHK ;Go look again
CHKALL: MOVE T1,NEXT ;Get next logical link to look at
CHKA.1: CALL CHKEVT ;Anything happen
JUMPN T2,[MOVEM T1,@NETLN ;Return link number
AOS T1 ;Increment next counter
CAIN T1,MAXLL ;End of list?
SETZ T1, ;Yes, start over
MOVEM T1,NEXT ;Save it
MOVE T1,@NETLN ;Retrieve the offset
JRST 0(T2)] ;Process the event
AOS T1 ;Look at next link
CAIN T1,MAXLL ;End of list?
SETZ T1, ;Yes, start at beginning
CAME T1,NEXT ;Seen entire list?
JRST CHKA.1 ;No, look again
SKIPN @WAIT ;Waiting?
RETURN GDOK.. ;No
MOVEI T1,DISTIM ;
DISMS% ;
JRST CHKALL ;Check again
; CHKEVT (1.1.1)
; Return current status.
; T1: index of JFN of the link to check
CHKEVT:
T20,< SKIPN T2,LLJFN(T1)> ;Is JFN assigned?
T10,< SKIPN T2,LLSTAT(T1)> ;Is channel assigned?
RET ;No
HRRZ T2,LLEVNT(T1) ;Get event flags
JUMPN T2,CHKEV1 ;Did they get updated at INT level?
CALL .UPEVT ;No, update event word in case lost INT
HRRZ T2,LLEVNT(T1) ;Get event flags back
JUMPE T2,[RET] ;Report nothing happened
CHKEV1: TXNE T2,EV.CON ;Connect?
JRST [MOVEI T2,GND.C ;
RET] ;
TXNE T2,EV.ABT ;Abort?
JRST [MOVEI T2,GND.A ;
RET] ;
TXNE T2,EV.INT ;Interrupt message?
JRST [MOVEI T2,GND.I ;
RET] ;
TXNE T2,EV.DAT ;Data available?
JRST [MOVEI T2,GND.DA ;
RET] ;
TXNE T2,EV.DIS ;Disconnect event?
JRST [MOVEI T2,GND.DC ;
RET] ;
SETZ T2, ;
RET ;
; Connect event occurred:
GND.C: MOVEI T2,EV.CON ;Connect event bit
ANDCAM T2,LLEVNT(T1) ;Turn it off
T10,< CALL .GTINF> ;Get connect info
RETURN GDCONN ;Return with connect status
; Abort occurred:
GND.A: RETURN GDABRJ ;Return with abort status
; Disconnect occurred:
GND.DC: MOVEI T2,EV.DIS ;Disconnect event bit
ANDCAM T2,LLEVNT(T1) ;Turn it off
RETURN GDDC.. ;Return with disconnect status
; Interrupt message available:
GND.I: RETURN GDINT. ;Return with interrupt status
; Data available:
GND.DA: RETURN GDDATA ;Return with data available status
PRGEND ;End of NFGND
TITLE NFOPU Active link open routines
ENTRY NFOPA
SEARCH TTTUNV
TTTINI
EXTERN .LOPEN
T10,< EXTERN .NSPIN>
; NFOPA (2A)
;
; Open an active logical link (DCN:), establishing a connection for
; the transmission of ASCII data only.
;
; A passive link should be used by a server process which waits for
; other programs to link to it and request its services. An active
; link should be used by a program which wants to link to a server
; program and request its services. Once a link is established, there
; is no distinction between the active and passive tasks: both can
; send data, receive data, send interrupts, receive interrupts, and
; end the link.
;
; On TOPS20, a nonprivileged job can have only four open links. The
; system quota of open links depends on the amount of monitor free
; core available.
;
; On TOPS10 and TOPS20, the data is in 7-bit bytes, actually transmitted
; through the network as 8-bit bytes. On VMS systems, the data is in
; 8-bit bytes.
;
; CALL NFOPA USING NETLN, HOSTN, OBJID, DESC, TASKN, USERID,
; PASSWD, ACCT, USERD, WAIT.
; RETCOD = NFOPA (NETLN, HOSTN, OBJID, DESC, TASKN, USERID,
; 1 PASSWD, ACCT, USERD, WAIT)
;
; NETLN identifies the logical link, set by this routine.
; HOSTN 1 to SHOSTN character ASCII hostname. This is the name of the
; system where the passive task to be connected to is running.
; OBJID Optional ASCII DECnet objectid. This is the nonzero
; object type expressed as a decimal number or, for TOPS-20 only,
; an object name (1 to SOBJID ASCII characters).
; It identifies the generic service offered by the passive
; DECnet object being connected to (see Appendix C of the
; Functional Specification). See Appendix B of the Functional
; Specification for examples of how the active task specifies
; a particular passive task to be connected to.
; DESC DECnet descriptor, a 1 to SDESCF character ASCII string which
; may optionally be given if an objectid is specified (DECnet VAX
; and DECnet-10 do not allow descriptors for nonzero objectids).
; If the objectid is type 0 or object name TASK, this is the unique
; taskname of the passive task. For TOPS-20 only, if the objectid
; identifies some other object type other than TASK, this field
; must match the descriptor specified by the passive task.
;
; NOTE: HOSTN, OBJID, and DESC cannot exceed a total of thirty-seven
; characters (TOPS-20 only restriction).
;
; TASKN DECnet taskname, a 1 to STASKN character ASCII string by which this
; process is known to the network. If this parameter is omitted,
; the monitor will assign a taskname.
; There is never any real reason for an active task to specify
; its taskname.
; USERID
; Optional 1 to SUSRID character ASCII userid.
; PASSWD
; Optional 1 to SPASWD ASCII character password.
; ACCT Optional 1 to SACCNT ASCII character account.
; USERD Optional 1 to SOPTDT ASCII characters of user data.
; WAIT wait code:
; WAITLN: return now, use NFGND to check for completion
; WAITLY: wait.
; Return code and function value:
; OAWRNG: an argument is of the wrong type
; OAOK..: success
; OA2MNY: too many links or no more interrupt channels
; OAABRJ: target rejected link or aborted, use NFINF to find out
; HORROR: JSYS error.
NFOPA: SAVAC ;Save ACs
; Set up parameters:
MOVEI T1,^D7 ;Use 7-bit ASCII bytes
JRST OPACT ;Join common code
ENTRY NFOPB
; NFOPB (2B)
;
; Open an active logical link (DCN:), establishing a connection for
; the transmission of records or blocks of data.
;
; A passive link should be used by a server program which waits for other
; programs to link to it and request its services. An active link
; should be used by a program which wants to link to a server program
; and request its services. Once a link is established, there is no
; distinction between the active and passive tasks: both can send data,
; receive data, send interrupts, receive interrupts, and end the link.
;
; On TOPS20, a nonprivileged job can have only four open links. The
; system quota of open links depends on the amount of monitor free
; core available.
;
; Data is moved as a string of bits (transmitted 8 bits at a time by the
; network) suitable for input to the data conversion routines,
; although for convenience the user may specify that his data contains
; so many bytes of a specified size. For details of how the bit
; transport is done for use by the DCR, see Appendix H of the
; Functional Specification.
;
; CALL NFOPB USING NETLN, HOSTN, OBJID, DESC, TASKN, USERID,
; PASSWD, ACCT, USERD, WAIT.
; RETCOD = NFOPB (NETLN, HOSTN, OBJID, DESC, TASKN, USERID,
; 1 PASSWD, ACCT, USERD, WAIT)
;
; NETLN identifies the logical link, set by this routine.
; HOSTN 1 to SHOSTN character ASCII hostname. This is the name of
; the system where the passive task to be connected to is running.
; OBJID Optional ASCII DECnet objectid. This is the nonzero
; object type expressed as a decimal number or, for TOPS-20 only,
; an object name (1 to SOBJID ASCII characters).
; It identifies the generic service offered by the passive
; DECnet object being connected to (see Appendix C of the
; Functional Specification). See Appendix B of the Functional
; Specification for examples of how the active task specifies
; a particular passive task to be connected to.
; DESC DECnet descriptor, a 1 to SDESCF character ASCII string which
; may optionally be given if an objectid is specified (DECnet VAX
; and DECnet-10 do not allow descriptors for nonzero objectids).
; If the objectid is type 0 or object name TASK, this is the unique
; taskname of the passive task. For TOPS-20 only, if the objectid
; identifies some other object type other than TASK, this field
; must match the descriptor specified by the passive task.
;
; NOTE: HOSTN, OBJID, and DESC cannot exceed a total of thirty-seven
; characters (TOPS-20 only restriction).
;
; TASKN DECnet taskname, a 1 to STASKN character ASCII string by which this
; process is known to the network. If this parameter is omitted,
; the monitor will assign a taskname.
; There is never any real reason for an active task to specify
; its taskname.
; USERID
; Optional 1 to SUSRID character ASCII userid.
; PASSWD
; Optional 1 to SPASWD character ASCII password.
; ACCT Optional 1 to SACCNT character ASCII account.
; USERD Optional 1 to SOPTDT ASCII characters of user data.
; WAIT wait code:
; WAITLN: return now, use NFGND to check for completion
; WAITLY: wait.
; Return code and function value:
; OAWRNG: an argument is of the wrong type
; OAOK..: success
; OA2MNY: too many links or no more interrupt channels
; OAABRJ: target rejected link or aborted, use NFINF to find out
; HORROR: JSYS error.
NFOPB: SAVAC ;Save ACs
; Set up parameters:
MOVEI T1,^D36 ;Use image bytes
JRST OPACT ;Join common code
ENTRY NFOP8
; NFOP8 (2F)
;
; Open an active logical link (DCN:), establishing a connection for
; the transmission of 8-bit bytes of data, stored in the usual manner
; in which the local system stores 8-bit bytes (see Appendix H of the
; Functional Specification).
;
; A passive link should be used by a server program which waits for other
; programs to link to it and request its services. An active link should
; be used by a program which wants to link to a server and request its
; services. Once a link is established, there is no distinction
; between the active and passive tasks: both can send data, receive
; data, send interrupts, receive interrupts, or end the link.
;
; On TOPS20, a nonprivileged job can have only four open links. The system
; quota of open links depends on the amount of monitor free core available.
;
; Data is moved as a string of 8-bit bytes, stored as the local system
; usually stores 8-bit bytes. No unused bits are transferred. For
; details of how the bit transport is done, see Appendix H of the
; Functional Specification.
;
; CALL NFOP8 USING NETLN, HOSTN, OBJID, DESC, TASKN, USERID,
; PASSWD, ACCT, USERD, WAIT.
; RETCOD = NFOP8 (NETLN, HOSTN, OBJID, DESC, TASKN, USERID,
; 1 PASSWD, ACCT, USERD, WAIT)
;
; NETLN identifies the logical link, set by this routine.
; HOSTN 1 to SHOSTN ASCII character hostname. This is the name of the
; system where the passive task to be connected to is running.
; OBJID Optional ASCII DECnet objectid. This is the nonzero
; object type expressed as a decimal number or, for TOPS-20 only,
; an object name (1 to SOBJID ASCII characters).
; It identifies the generic service offered by the passive
; DECnet object being connected to (see Appendix C of the
; Functional Specification). See Appendix B of the Functional
; Specification for examples of how the active task specifies
; a particular passive task to be connected to.
; DESC DECnet descriptor, a 1 to SDESCF character ASCII string which
; may optionally be given if an objectid is specified (DECnet VAX
; and DECnet-10 do not allow descriptors for nonzero objectids).
; If the objectid is type 0 or object name TASK, this is the unique
; taskname of the passive task. For TOPS-20 only, if the objectid
; identifies some other object type other than TASK, this field
; must match the descriptor specified by the passive task.
;
; NOTE: HOSTN, OBJID, and DESC cannot exceed a total of thirty-seven
; characters (TOPS-20 only restriction).
;
; TASKN DECnet taskname, a 1 to STASKN character ASCII string by which this
; process is known to the network. If this parameter is omitted,
; the monitor will assign a taskname.
; There is never any real reason for an active task to specify
; its taskname.
; USERID
; Optional 1 to SUSRID character ASCII userid.
; PASSWD
; Optional 1 to SPASWD character ASCII password.
; ACCT Optional 1 to SACCNT character ASCII account.
; USERD Optional 1 to SOPTDT ASCII characters of user data.
; WAIT wait code:
; WAITLN: return now, use NFGND to check for completion
; WAITLY: wait.
; Return code and function value:
; OAWRNG: an argument is of the wrong type
; OAOK..: success
; OA2MNY: too many links or no more interrupt channels
; OAABRJ: target rejected link or aborted, use NFINF to find out
; HORROR: JSYS error.
NFOP8: SAVAC ;Save ACs
; Set up parameters:
MOVEI T1,^D8 ;Use 8-bit bytes
; JRST OPACT ;Fall through to OPACT routine
; OPACT (2Z)
; Common code to set up active task parameters.
OPACT: MOVEM T1,CODE ;Remember the byte size
MOVEI T1,1 ;Make us active
MOVEM T1,TYPE ;Remember this information
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.6 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN OAWRNG ;Anything else is trouble
>; end IFN TCK
L.6: XMOVEI T1,@0(ARG) ;[51]Address of NETLN
MOVEM T1,NETLN ;Save it
T10,< CALL .NSPIN> ;Initialize NSP. associated blocks
; HOSTN (1) setup:
HRLI T1,.TYPE ;Get HOSTN's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
T20,< MOVE T4,[POINT 7,TEMPST] ;Build DECnet descriptor
MOVEI T2,"D" ;Form
IDPB T2,T4 ;... device
MOVEI T2,"C" ;... DCN:
IDPB T2,T4 ;... for
MOVEI T2,"N" ;... the
IDPB T2,T4 ;... active
MOVEI T2,":" ;... task's
IDPB T2,T4 ;... device.
>; End of T20
T10,< MOVE T4,[POINT 8,BL$NOD+.NSAST]> ;Byte pointer for host name string desc.
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.52 ;...
CAIE T1,.ST ;[7] COBOL byte string is correct
JRST L.52 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@1(ARG) ;[51][7] Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte pointer
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
JUMPE T3,.E10A ;[41] No bytes, skip this field
CAILE T3,SHOSTN ;Check for valid count
MOVEI T3,SHOSTN ;Too big, use maximum
T10,< HRLM T3,BL$NOD+.NSASL> ;Save byte count in string desc. block
ILDB T1,T2 ;Get a byte
JUMPE T1,.E10A ;[41] Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E10A ;[41] Yes, skip this field
JRST L.7 ;Do not load new byte first time in loop
L.57: ILDB T1,T2 ;Get a byte
SKIPE T1 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
T20,< JRST .E10> ;Yes, end string
T10,< JRST [HLRZ T1,BL$NOD+.NSASL ;Get the COBOL string length
SUBI T1,(T3) ;Subtract the excess
HRLM T1,BL$NOD+.NSASL ;Since NSP. does not tolerate spaces
JRST .E10]
>; End T10
L.7: IDPB T1,T4 ;Otherwise store byte
SOJG T3,L.57 ;Loop
JRST .E10 ;End of string
; FORTRAN code:
L.52: XMOVEI T2,@1(ARG) ;[51]Characters in array
HLL T2,[POINT 7,0] ;Make byte pointer
MOVEI T3,1 ;Count a byte
ILDB T1,T2 ;Get a byte
JUMPE T1,.E10A ;[41] Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E10A ;[41] Yes, skip this field
JRST L.11 ;Do not load new byte first time in loop
L.58: ILDB T1,T2 ;Get a byte
JUMPE T1,L.59 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST L.59 ;Yes, end string
AOS T3 ;Increment byte count
L.11: IDPB T1,T4 ;Otherwise store byte
CAIGE T3,SHOSTN ;Check for valid count
JRST L.58 ;Loop
L.59:
T10,< HRLM T3,BL$NOD+.NSASL ;Save byte count in string desc. block
JRST .E10 ;Continue on
>; End of T10
.E10A: ;Here if node name blank or null
T10,< MOVE T1,[DN.FLE+<.DNLNN,,3>] ;DNET. function to get local node name
SETZB T2,T3 ;Clear for good measure
MOVEI T0,T1 ;Arg pointer
DNET. T0, ;Do it
SETZ T3, ;Failed? Clear node name
MOVE T2,[POINT 6,T3] ;SIXBIT pointer to node name
MOVEI T0,6 ;Number or characters
.E10B: ILDB T1,T2 ;Get a SIXBIT character
JUMPE T1,.E10C ;Stop if blank
ADDI T1,40 ;Make it ASCII
IDPB T1,T4 ;Save in BL$NOD block
SOJG T0,.E10B ;Do it for whole node name
.E10C: MOVEI T1,6 ;Char count
SUB T1,T0 ;Minus the spaces
HRLM T1,BL$NOD+.NSASL ;Save in string pointer
>; End of T10
; End of HOSTN, insert "-"
.E10:
T20,< MOVEI T1,"-" ;Get the character
IDPB T1,T4 ;... and store it.
>; End of T20
; OBJID (2) setup:
HRLI T1,.TYPE ;[41] Get OBJID's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
T10,< MOVEI T4,1 ;Assume for now FORMAT type 1
MOVEM T4,BL$DPD+.NSDFM
HRRZS BL$DPT+.NSASL ;And zero length TASK name
SETZ T4, ;TOPS-10 requires integer OBJID
;So, we will build the integer as we go
>; End of T10
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.61 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.61 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@2(ARG) ;[51][7] Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
CAILE T3,SOBJID ;Check for valid count
MOVEI T3,SOBJID ;Too big, use maximum
;[56] The objectid is required, so use "0" if none is given.
ILDB T1,T2 ;[56] Get first byte of objectid
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST [MOVEI T1,"0" ;[56] Yes, must use "0" instead
T20,< IDPB T1,T4> ;[56] Store the zero
JRST .E12 ] ;[56] And go to end of objectid code
JRST L.63A ;Join the loop late
L.63: ILDB T1,T2 ;Get a byte
JUMPE T1,.E12 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E12 ;Yes, end string
L.63A:
T20,< IDPB T1,T4> ;Otherwise, store byte
T10,< CAIL T1,"0" ;If decimal digit
CAILE T1,"9"
JRST .E12 ;Not digit, done
IMULI T4,^D10 ;Prepare current accumulated integer
SUBI T1,"0" ;Convert ASCII to binary
ADDI T4,(T1) ;Add in this digit
>; End of T10
SOJG T3,L.63 ;Count this byte
JRST .E12 ;End of string
; FORTRAN code:
L.61: XMOVEI T2,@2(ARG) ;[51]Characters in array
HLL T2,[POINT 7,0] ;Make byte pointer
SETZM T3 ;Byte count
;[56] The objectid is required, so use "0" if none is given.
ILDB T1,T2 ;[56] Get first byte of objectid
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST [MOVEI T1,"0" ;[56] Yes, use "0".
T20,< IDPB T1,T4> ;[56] Store the zero
JRST .E12 ] ;[56] Go to end of objectid code
JRST L.64A ;Join the loop late
L.64: ILDB T1,T2 ;Get a byte
AOS T3 ;Count byte
JUMPE T1,.E12 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E12 ;Yes, end string
L.64A:
T20,< IDPB T1,T4> ;Otherwise, store byte
T10,< CAIL T1,"0" ;If decimal digit
CAILE T1,"9"
JRST .E12 ;Not a digit, done
IMULI T4,^D10 ;Prepare current accumulated integer
SUBI T1,"0" ;Convert ASCII to binary
ADDI T4,(T1) ;Add in this digit
>; End of T10
CAIGE T3,SOBJID ;Check for valid count
JRST L.64 ;Loop
; End of OBJID, insert "-"
;[56] Do not insert the "-" after the objectid unless there is a descriptor
.E12:
;[56] MOVEI T1,"-" ;Get the character
;[56] IDPB T1,T4 ;... and store it.
T10,< MOVEM T4,BL$DPD+.NSDOB ;Save away the object number
SKIPE T4 ;And, if non-zero
SETZM BL$DPD+.NSDFM ;Then this is a FORMAT type 0
SKIPE T4 ;If non-zero object type
JRST .E13 ;DECnet-10 will not accept a
; task name, so skip this
>; End of T10
; DESC (3) setup:
HRLI T1,.TYPE ;Get DESC's type
HRRI T1,3(ARG) ;...
LDB T1,T1 ;...
T10,< MOVE T4,[POINT 8,BL$DPT+.NSAST]> ;Start TASK string
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.65 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.65 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@3(ARG) ;[51]Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
CAILE T3,SDESCF ;Check for valid count
MOVEI T3,SDESCF ;Too big, use maximum
T10,< HRLM T3,BL$DPT+.NSASL> ;Save byte count in string desc. block
;[56] Insert "-" after the objectid if there is a descriptor
ILDB T1,T2 ;[56] Get first byte of descriptor
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E13 ;[56] Yes, skip all this
T20,< PUSH P,T1 ;[56] Otherwise, save this character
MOVEI T1,"-" ;[56] ... and get a "-"
IDPB T1,T4 ;[56] Store the "-"
POP P,T1 ;[56] Restore the character
>; End of T20
IDPB T1,T4 ;[56] ... and insert it
SOS T3 ;[56] Account for one character
L.67: ILDB T1,T2 ;Get a byte
JUMPE T1,.E13 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E13 ;Yes, end string
IDPB T1,T4 ;Otherwise, store byte
SOJG T3,L.67 ;Count this byte
JRST .E13 ;End of string
; FORTRAN code:
L.65: XMOVEI T2,@3(ARG) ;[51]Characters in array
HLL T2,[POINT 7,0] ;Make byte pointer
SETZM T3 ;Byte count
;[56] Insert "-" after the objectid if there is a descriptor.
ILDB T1,T2 ;[56] Get first byte of descriptor
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E13 ;[56] Yes, skip to end of desc. code
T20,< PUSH P,T1 ;[56] otherwise, save this byte
MOVEI T1,"-" ;[56] ... and get a "-"
IDPB T1,T4 ;[56] Store the "-"
POP P,T1 ;[56] Restore the character
>; End of T20
IDPB T1,T4 ;[56] ... and store it
AOS T3 ;[56] Account for one character
L.68: ILDB T1,T2 ;Get a byte
JUMPE T1,L.68A ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST L.68A ;Yes, end string
AOS T3 ;Count byte
IDPB T1,T4 ;Otherwise, store byte
CAIGE T3,SDESCF ;Check for valid count
JRST L.68 ;Loop
L.68A:
T10,< HRLM T3,BL$DPT+.NSASL> ;Save byte counter
; End of DESC, insert "."
;[56] Do not insert a "." after the descriptor unless there is a taskname.
.E13:
;[56] MOVEI T1,"." ;Get the character
;[56] IDPB T1,T4 ;... and store it.
; TASKN (4) setup:
HRLI T1,.TYPE ;Get TASKN's type
HRRI T1,4(ARG) ;...
LDB T1,T1 ;...
T10,< MOVEI T4,1 ;Assume for now FORMAT type 1
MOVEM T4,BL$SPD+.NSDFM
HRRZS BL$SPT+.NSASL ;And zero length TASK name
MOVE T4,[POINT 8,BL$SPT+.NSAST] ;Start TASK string
>; End of T10
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.69 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.69 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@4(ARG) ;[51][7] Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
CAILE T3,STASKN ;Check for valid count
MOVEI T3,STASKN ;Too big, use maximum
T10,< HRLM T3,BL$SPT+.NSASL> ;Save byte count in string desc. block
;[56] Insert "." if there is a taskname.
ILDB T1,T2 ;[56] Get first character of taskname
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E14A ;[56] Yes, skip to end of taskname
T20,< PUSH P,T1 ;[56] Otherwise, save this character
MOVEI T1,"." ;[56] Get "."
IDPB T1,T4 ;[56] ... and store it
POP P,T1 ;[56] Restore the character
>; End of T20
IDPB T1,T4 ;[56] ... and store it
SOS T3 ;[56] Account for the character
L.71: ILDB T1,T2 ;Get a byte
JUMPE T1,.E14 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E14 ;Yes, end string
IDPB T1,T4 ;Otherwise, store byte
SOJG T3,L.71 ;Count this byte
JRST .E14 ;End of string
; FORTRAN code:
L.69: XMOVEI T2,@4(ARG) ;[51]Characters in array
HLL T2,[POINT 7,0] ;Make byte pointer
SETZM T3 ;Byte count
;[56] Insert "." if there is a taskname.
ILDB T1,T2 ;[56] Get first character of taskname
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E14A ;[60][56] Yes, go to end of taskname
T20,< PUSH P,T1 ;[56] Otherwise, save this character
MOVEI T1,"." ;[56] Get the "."
IDPB T1,T4 ;[56] ... and store it
POP P,T1 ;[56] Restore the character
>; End of T20
IDPB T1,T4 ;[56] ... and store it
AOS T3 ;[56] Account for one character
L.72: ILDB T1,T2 ;Get a byte
JUMPE T1,L.72A ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST L.72A ;Yes, end string
AOS T3 ;Count byte
IDPB T1,T4 ;Otherwise, store byte
CAIGE T3,STASKN ;Check for valid count
JRST L.72 ;Loop
L.72A:
T10,< HRLM T3,BL$SPT+.NSASL ;Save byte count
JRST .E14 ;Done with task name
>; End of T10
.E14A: ;TOPS-10 special hack
T10,< SETZM BL$SPD+.NSDFM ;Here if no active task name given
MOVEI T1,345 ;Must make a format type zero proc
MOVEM T1,BL$SPD+.NSDOB ; desc with obj type non-zero to keep
; VMS happy (345 is an arbitrary OBJ!)
>; End of T10
; USERID (5) setup:
.E14: HRLI T1,.TYPE ;Get USERID's type
HRRI T1,5(ARG) ;...
LDB T1,T1 ;...
T10,< MOVE T4,[POINT 8,BL$USR+.NSAST]> ;Start USERID string
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.81 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.81 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@5(ARG) ;[51]Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
JUMPE T3,.E17 ;No bytes? Skip this field
CAILE T3,SUSRID ;Check for valid count
MOVEI T3,SUSRID ;Too big, use maximum
T10,< HRLM T3,BL$USR+.NSASL> ;Save byte count in string desc. block
ILDB T1,T2 ;Get a byte
JUMPE T1,.E17 ;Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E17 ;yes, skip this field
T20,< PUSH P,T1 ;Save the first byte
PUSH P,T2 ;... the byte pointer
PUSH P,T3 ;... and the byte count
MOVE T2,[POINT 7,[ASCIZ /;USERID:/]]
MOVEI T3,^D8 ;8 characters in the prefix
L.83: ILDB T1,T2 ;Get a character
IDPB T1,T4 ;Store it in the DECnet descriptor
SOJG T3,L.83 ;Get all of the prefix
POP P,T3 ;Retrieve byte count
POP P,T2 ;... byte pointer
POP P,T1 ;... and the first byte.
>; End of T20
JRST L.105 ;Skip getting a byte
L.84: ILDB T1,T2 ;Get a byte
JUMPE T1,.E17 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E17 ;Yes, end string
L.105: IDPB T1,T4 ;Otherwise, store the byte
SOJG T3,L.84 ;Count this byte
JRST .E17 ;End of string
; FORTRAN code:
L.81: XMOVEI T2,@5(ARG) ;[51]Characters in array
HLL T2,[POINT 7,0] ;Make a byte pointer
MOVEI T3,1 ;Count a byte
ILDB T1,T2 ;Get a byte
JUMPE T1,.E17 ;Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E17 ;Yes, skip this field
T20,< PUSH P,T1 ;Save the first byte
PUSH P,T2 ;... and the byte pointer
MOVE T2,[POINT 7,[ASCIZ /;USERID:/]]
MOVEI T3,^D8 ;8 characters in the prefix
L.85: ILDB T1,T2 ;Get a character
IDPB T1,T4 ;Store it in the DECnet descriptor
SOJG T3,L.85 ;Get all of the prefix
POP P,T2 ;Retrieve the byte pointer
POP P,T1 ;... and the first byte
>; End of T20
JRST L.107 ;Skip getting another byte
L.86: ILDB T1,T2 ;Get a byte
JUMPE T1,L.107A ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST L.107A ;Yes, end string
AOS T3 ;Increment byte count
L.107: IDPB T1,T4 ;Otherwise, store byte
CAIGE T3,SUSRID ;Check for valid count
JRST L.86 ;End loop
L.107A:
T10,< HRLM T3,BL$USR+.NSASL> ;Save byte count in string desc. block
; PASSWD (6) setup:
.E17: HRLI T1,.TYPE ;Get PASSWD's type
HRRI T1,6(ARG) ;...
LDB T1,T1 ;...
T10,< MOVE T4,[POINT 8,BL$PAS+.NSAST]> ;Start USERID string
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.87 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.87 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@6(ARG) ;[51][7] Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
JUMPE T3,.E18 ;No bytes? Skip this field
CAILE T3,SPASWD ;Check for valid count
MOVEI T3,SPASWD ;Too big, use maximum
T10,< HRLM T3,BL$PAS+.NSASL> ;Save byte count in string desc. block
ILDB T1,T2 ;Get a byte
JUMPE T1,.E18 ;Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E18 ;yes, skip this field
T20,< PUSH P,T1 ;Save the first byte
PUSH P,T2 ;... the byte pointer
PUSH P,T3 ;... and the byte count
MOVE T2,[POINT 7,[ASCIZ /;PASSWORD:/]]
MOVEI T3,^D10 ;Ten characters in the prefix
L.89: ILDB T1,T2 ;Get a character
IDPB T1,T4 ;Store it in the DECnet descriptor
SOJG T3,L.89 ;Get all of the prefix
POP P,T3 ;Retrieve byte count
POP P,T2 ;... byte pointer
POP P,T1 ;... and the first byte.
>; End of T20
JRST L.108 ;Skip getting a byte
L.90: ILDB T1,T2 ;Get a byte
JUMPE T1,.E18 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E18 ;Yes, end string
L.108: IDPB T1,T4 ;Otherwise, store the byte
SOJG T3,L.90 ;Count this byte
JRST .E18 ;End of string
; FORTRAN code:
L.87: XMOVEI T2,@6(ARG) ;[51]Characters in array
HLL T2,[POINT 7,0] ;Make a byte pointer
MOVEI T3,1 ;Count a byte
ILDB T1,T2 ;Get a byte
JUMPE T1,.E18 ;Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E18 ;Yes, skip this field
T20,< PUSH P,T1 ;Save the first byte
PUSH P,T2 ;... and the byte pointer
MOVE T2,[POINT 7,[ASCIZ /;PASSWORD:/]]
MOVEI T3,^D10 ;Ten characters in the prefix
L.91: ILDB T1,T2 ;Get a character
IDPB T1,T4 ;Store it in the DECnet descriptor
SOJG T3,L.91 ;Get all of the prefix
POP P,T2 ;Retrieve the byte pointer
POP P,T1 ;... and the first byte
>; End of T20
JRST L.109 ;Skip getting another byte
L.92: ILDB T1,T2 ;Get a byte
JUMPE T1,L.109A ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST L.109A ;Yes, end string
AOS T3 ;Increment byte count
L.109: IDPB T1,T4 ;Otherwise, store byte
CAIGE T3,SPASWD ;Check for valid count
JRST L.92 ;End loop
L.109A:
T10,< HRLM T3,BL$PAS+.NSASL> ;Save byte count in string desc. block
; ACCT (7) setup:
.E18: HRLI T1,.TYPE ;Get ACCT's type
HRRI T1,7(ARG) ;...
LDB T1,T1 ;...
T10,< MOVE T4,[POINT 8,BL$ACC+.NSAST]> ;Start USERID string
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.93 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.93 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@7(ARG) ;[51][7] Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
JUMPE T3,.E19 ;No bytes? Skip this field
CAILE T3,SACCNT ;Check for valid account
MOVEI T3,SACCNT ;Too big, use maximum
T10,< HRLM T3,BL$ACC+.NSASL> ;Save byte count in string desc. block
ILDB T1,T2 ;Get a byte
JUMPE T1,.E19 ;Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E19 ;Yes, skip this field
T20,< PUSH P,T1 ;Save the first byte
PUSH P,T2 ;... the byte pointer
PUSH P,T3 ;... and the byte count
MOVE T2,[POINT 7,[ASCIZ /;CHARGE:/]]
MOVEI T3,^D8 ;8 characters in the prefix
L.95: ILDB T1,T2 ;Get a character
IDPB T1,T4 ;Store it in the DECnet descriptor
SOJG T3,L.95 ;Get all of the prefix
POP P,T3 ;Retrieve byte count
POP P,T2 ;... byte pointer
POP P,T1 ;... and the first byte.
>; End of T20
JRST L.111 ;Skip getting another byte
L.96: ILDB T1,T2 ;Get a byte
JUMPE T1,.E19 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E19 ;Yes, end string
L.111: IDPB T1,T4 ;Otherwise, store the byte
SOJG T3,L.96 ;Count this byte
JRST .E19 ;End of string
; FORTRAN code:
L.93: XMOVEI T2,@7(ARG) ;[51]Characters in array
HLL T2,[POINT 7,0] ;Make a byte pointer
MOVEI T3,1 ;Count a byte
ILDB T1,T2 ;Get a byte
JUMPE T1,.E19 ;Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E19 ;Yes, skip this field
T20,< PUSH P,T1 ;Save the first byte
PUSH P,T2 ;... and the byte pointer
MOVE T2,[POINT 7,[ASCIZ /;CHARGE:/]]
MOVEI T3,^D8 ;8 characters in the prefix
L.97: ILDB T1,T2 ;Get a character
IDPB T1,T4 ;Store it in the DECnet descriptor
SOJG T3,L.97 ;Get all of the prefix
POP P,T2 ;Retrieve the byte pointer
POP P,T1 ;... and the first byte
>; End of T20
JRST L.112 ;Skip getting another byte
L.98: ILDB T1,T2 ;Get a byte
JUMPE T1,L.112A ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST L.112A ;Yes, end string
AOS T3 ;Increment byte count
L.112: IDPB T1,T4 ;Otherwise, store byte
CAIGE T3,SACCNT ;Check for valid count
JRST L.98 ;End loop
L.112A:
T10,< HRLM T3,BL$ACC+.NSASL> ;Save byte count in string desc. block
; USERD (10) setup:
.E19: HRLI T1,.TYPE ;Get USERID's type
HRRI T1,10(ARG) ;...
LDB T1,T1 ;...
T10,< MOVE T4,[POINT 8,BL$OPT+.NSAST]> ;Start USERID string
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.99 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.99 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@10(ARG) ;[51][7] Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte pointer
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
JUMPE T3,.E20 ;No bytes? Skip this field
CAILE T3,SOPTDT ;Check for valid count
MOVEI T3,SOPTDT ;Too big, use maximum
T10,< HRLM T3,BL$OPT+.NSASL> ;Save byte count in string desc. block
ILDB T1,T2 ;Get a byte
JUMPE T1,.E20 ;Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E20 ;Yes, skip this field
T20,< PUSH P,T1 ;Save the first byte
PUSH P,T2 ;... the byte pointer
PUSH P,T3 ;... and the byte count
MOVE T2,[POINT 7,[ASCIZ /;DATA:/]]
MOVEI T3,^D6 ;6 characters in the prefix
L.101: ILDB T1,T2 ;Get a character
IDPB T1,T4 ;Store it in the DECnet descriptor
SOJG T3,L.101 ;Get all of the prefix
POP P,T3 ;Retrieve byte count
POP P,T2 ;... byte pointer
POP P,T1 ;... and the first byte.
>; End of T20
JRST L.113 ;Skip getting another byte
L.102: ILDB T1,T2 ;Get a byte
JUMPE T1,.E20 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E20 ;Yes, end string
L.113: IDPB T1,T4 ;Otherwise, store the byte
SOJG T3,L.102 ;Count this byte
JRST .E17 ;End of string
; FORTRAN code:
L.99: XMOVEI T2,@10(ARG) ;[51]Characters in array
HLL T2,[POINT 7,0] ;Make a byte pointer
MOVEI T3,1 ;Count a byte
ILDB T1,T2 ;Get a byte
JUMPE T1,.E20 ;Null? Yes, skip this field
CAIN T1,40 ;Or blank?
JRST .E20 ;Yes, skip this field
T20,< PUSH P,T1 ;Save the first byte
PUSH P,T2 ;... and the byte pointer
MOVE T2,[POINT 7,[ASCIZ /;DATA:/]]
MOVEI T3,^D6 ;6 characters in the prefix
L.103: ILDB T1,T2 ;Get a character
IDPB T1,T4 ;Store it in the DECnet descriptor
SOJG T3,L.103 ;Get all of the prefix
POP P,T2 ;Retrieve the byte pointer
POP P,T1 ;... and the first byte
>; End of T20
JRST L.114 ;Skip getting another byte
L.104: ILDB T1,T2 ;Get a byte
JUMPE T1,L.114A ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST L.114A ;Yes, end string
AOS T3 ;Increment byte count
L.114: IDPB T1,T4 ;Otherwise, store byte
CAIGE T3,SOPTDT ;Check for valid count
JRST L.104 ;End loop
L.114A:
T10,< HRLM T3,BL$OPT+.NSASL> ;Save byte count in string desc. block
; End of DECnet descriptor. Make it ASCIZ by adding a null.
.E20:
T20,< SETZ T1, ;Get a null byte
IDPB T1,T4 ;... and store it in the string
MOVE T2,[POINT 7,TEMPST] ;Get DECnet string address
MOVEM T2,DESC ;... and store it
>; End of T20
; WAIT (11) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get WAIT's type
HRRI T1,11(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.10 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN OAWRNG ;Anything else is trouble
>; End IFN TCK
L.10: XMOVEI T1,@11(ARG) ;[51]Get WAIT code's address
MOVEM T1,WAIT ;Save it
; End of parameter set-up.
JRST .LOPEN ;Join common code
PRGEND ;End of NFOPU
TITLE NFOPP Open a passive link
ENTRY NFOPP
SEARCH TTTUNV
TTTINI
EXTERN .LOPEN
T10,< EXTERN .NSPIN>
; NFOPP
;
; Open a passive logical link (SRV:), declaring a server task ready to
; accept connections from active tasks.
;
; A passive link should be used by a server program which waits for other
; programs to link to it and request its services. An active link should
; be used by a program which wants to link to a server program and
; request its services. Once a link is established, there is no distinction
; between the active and passive tasks: both can send data, receive
; data, send interrupts, receive interrupts, and end the link.
;
; On TOPS20, a nonprivileged job can have only four open links. The system
; quota of open links depends on the amount of monitor free core
; available.
;
; How data is actually moved through the link is established when a
; connection to this passive task is accepted. The passive task
; should accept the link for the same type of data transfer the active
; task opened the link for. If some other type of data transfer is
; used instead, the results are undefined. See Appendix H of the
; Functional Specification for details of how the bit transport is
; done for the various modes.
;
; CALL NFOPP USING NETLN, OBJID, DESC, TASKN, WAIT.
; RETCOD = NFOPP (NETLN, OBJID, DESC, TASKN, WAIT)
;
; NETLN identifies the logical link, set by this routine.
;
; OBJID Optional DECnet objectid. This is the nonzero type expressed as
; a decimal number or, for TOPS-20 only, an object name (1 to SOBJID
; ASCII characters). It identifies the generic service
; offered by this passive DECnet object (see Appendix C of the Functional
; Specification). See Appendix B of the Functional Specification for
; examples of how the active task specifies a particular passive task
; to be connected to.
;
; NOTE: OBJID and DESC cannot exceed a total of thirty-eight characters.
; (TOPS-20 only restriction)
;
; DESC DECnet descriptor, a 1 to SDESCF character ASCII string which may
; optionally be given if an objectid is specified (DECnet-10 and VAX do
; not allow descriptors for nonzero objectids. In fact, TOPS-10
; ignores this argument entirely). If a descriptor is
; used by the passive task, it must be used by an active task in
; order to access the passive task.
; TASKN DECnet taskname, a 1 to STASKN character ASCII string by which this
; process is known to the network.
; If this parameter is omitted, the monitor will assign a
; taskname. For objectid 0 (object name TASK), this taskname
; may be specified as the descriptor by an active task
; desiring to connect to this passive task.
; The taskname of a passive task is thus only important if the
; objectid is zero (object name TASK), because the active task
; will be using the taskname to refer to the passive task.
; WAIT wait code:
; WAITLN: return now, use NFGND to check for completion
; WAITLY: wait.
; Return code and function value:
; OAWRNG: an argument is of the wrong type
; OAOK..: success
; OA2MNY: too many links or no more interrupt channels
; OAABRJ: target rejected link or aborted, use NFINF to find out
; HORROR: JSYS error.
NFOPP: SAVAC ;Save ACs
; Set up parameters:
SETZM TYPE ;Remember this is passive
SETZM CODE ;No bytesize yet
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.106 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN OAWRNG ;Anything else is trouble
>; end IFN TCK
L.106: XMOVEI T1,@0(ARG) ;[51]Address of NETLN
MOVEM T1,NETLN ;Save it
T10,< CALL .NSPIN ;Initialize the NSP. connect block
MOVEI T1,.NSCDD+1 ;Passive block is shorter
MOVEM T1,BL$CON+.NSCNL ;So we don't check access info
SETZM BL$CON+.NSCND ;Accept from any NODE
SETZM BL$CON+.NSCSD ;Accept from any TASK
>; End of T10
; Set up DECnet description:
T20,< MOVE T4,[POINT 7,TEMPST] ;Build up DECnet description
MOVEI T2,"S" ;Form
IDPB T2,T4 ;... SRV:
MOVEI T2,"R" ;... for
IDPB T2,T4 ;... the
MOVEI T2,"V" ;... passive
IDPB T2,T4 ;... task's
MOVEI T2,":" ;... device.
IDPB T2,T4 ;...
>; End of T20
; OBJID (1) setup:
HRLI T1,.TYPE ;Get OBJID's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
T10,< MOVEI T4,1 ;Assume for now FORMAT type 1
MOVEM T4,BL$DPD+.NSDFM
HRRZS BL$DPT+.NSASL ;And zero length TASK name
SETZ T4, ;TOPS-10 requires integer OBJID
;So, we will build the integer as we go
>; End of T10
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.9 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.9 ;[7] or now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@1(ARG) ;[51][7] Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
CAILE T3,SOBJID ;Check for valid count
MOVEI T3,SOBJID ;Too big, use maximum
T20,< ;This is a restriction only on TOPS-20
;[56] There cannot be a descriptor if there is no objectid
ILDB T1,T2 ;[56] Get first character in objectid
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E15 ;[56] Yes, go to end of descriptor code
;[56] If the descriptor is 0 or TASK, it must not appear, so remove it
;[56] if the user supplied it!
CAIN T1,"0" ;[56] Is it "0"?
JRST .E15 ;[56] If so, skip to end of descriptor
PUSH P,T2 ;[56] otherwise, save source pointer
PUSH P,T1 ;[56] ... and this byte
CAIE T1,"T" ;[56] Check for "T"
CAIN T1,"t" ;[56] ...
SKIPA ;[56] ...
JRST L.1 ;[56] Neither, quit looking
ILDB T1,T2 ;[56] Get next byte
CAIE T1,"A" ;[56] Check for "A"
CAIN T1,"a" ;[56] ...
SKIPA ;[56] ...
JRST L.1 ;[56] Neither, quit looking
ILDB T1,T2 ;[56] Get next byte
CAIE T1,"S" ;[56] Check for "S"
CAIN T1,"s" ;[56] ...
SKIPA ;[56] ...
JRST L.1 ;[56] Neither, quit looking
ILDB T1,T2 ;[56] Get next byte
CAIE T1,"K" ;[56] Check for "K"
CAIN T1,"k" ;[56] ...
SKIPA ;[56] ...
JRST L.1 ;[56] ...
ILDB T1,T2 ;[56] Get next byte
CAIE T1,40 ;[56] Check for blank
CAIN T1,0 ;[56] ... or null
JRST [POP P,T1 ;[56] Found "TASK", so restore
POP P,T2 ;[56] ... registers and go to
JRST .E15 ] ;[56] ... end of descriptor code
L.1: POP P,T1 ;[56] Not "TASK", so do normal process
POP P,T2 ;[56] ... restoring character
JRST L.59A ;Join loop
>; End of T20
L.59: ILDB T1,T2 ;Get a byte
JUMPE T1,.E11 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E11 ;Yes, end string
L.59A:
T20,< IDPB T1,T4> ;Store byte
T10,< CAIL T1,"0" ;If decimal digit
CAILE T1,"9"
JRST .E11 ;Not a digit, done
IMULI T4,^D10 ;Prepare current accumulated integer
SUBI T1,"0" ;Convert ASCII to binary
ADDI T4,(T1) ;Add in this digit
>; End of T10
SOJG T3,L.59 ;Do all bytes
JRST .E11 ;End string
; FORTRAN code:
L.9: XMOVEI T2,@1(ARG) ;[51]Get array address
HLL T2,[POINT 7,0] ;Make a byte pointer
SETZM T3 ;Byte count
T20,< ;This is a restriction only on TOPS-20
;[56] There cannot be a descriptor if there is no objectid.
ILDB T1,T2 ;[56] Get first character in objectid
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E15 ;[56] Yes, go to end of descriptor code
;[56] If objectid is "0" or "TASK", it is supposed to be left out,
;[56] so remove it for the monitor's benefit!
CAIN T1,"0" ;[56] Is it "0"?
JRST .E15 ;[56] Yes, skip to end of descriptor
;[56] Now check for "TASK"
PUSH P,T2 ;[56] Save byte pointer
PUSH P,T1 ;[56] ... and current character
CAIE T1,"T" ;[56] Is it "T"?
CAIN T1,"t" ;[56] ...
SKIPA ;[56] ...
JRST L.2 ;[56] Neither, quit this
ILDB T1,T2 ;[56] Get next character
CAIE T1,"A" ;[56] Is it "A"?
CAIN T1,"a" ;[56] ...
SKIPA ;[56] ...
JRST L.2 ;[56] Neither, quit this
ILDB T1,T2 ;[56] Get next character
CAIE T1,"S" ;[56] Is it "S"
CAIN T1,"s" ;[56] ...
SKIPA ;[56] ...
JRST L.2 ;[56] Neither, quit this
ILDB T1,T2 ;[56] Get next character
CAIE T1,"K" ;[56] Is it "K"?
CAIN T1,"k" ;[56] ...
SKIPA ;[56] ...
JRST L.2 ;[56] Neither, quit this
ILDB T1,T2 ;[56] Get next character
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST [POP P,T1 ;[56] Yes, so ignore the objectid
POP P,T2 ;[56] ... clean up, and go to end of
JRST .E15 ] ;[56] ... descriptor code
L.2: POP P,T1 ;[56] Objectid is not "TASK" or "0"
POP P,T2 ;[56] Restore state and process it
JRST L.60A ;Join loop
>; End of T20
L.60: ILDB T1,T2 ;Get a byte
AOS T3 ;Count byte
JUMPE T1,.E11 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E11 ;Yes, end string
L.60A:
T20,< IDPB T1,T4> ;Store byte
T10,< CAIL T1,"0" ;If decimal digit
CAILE T1,"9"
JRST .E11 ;Not a digit, done
IMULI T4,^D10 ;Prepare current accumulated integer
SUBI T1,"0" ;Convert ASCII to binary
ADDI T4,(T1) ;Add in this digit
>; End of T10
CAIGE T3,SOBJID ;[16] Check for valid count
;[16] CAILE T3,SOBJID ;Check for valid count
JRST L.60 ;Loop
; End OBJID string, insert "-"
;[56] Only insert "-" after objectid if there is a descriptor.
.E11:
;[56] MOVEI T1,"-" ;Get the character
;[56] IDPB T1,T4 ;Store it
T10,< MOVEM T4,BL$DPD+.NSDOB ;Save away object type
SKIPE T4 ;If non-zero
SETZM BL$DPD+.NSDFM ;Then FORMAT type 0
SKIPE T4 ;Of non-zero object type
JRST .E16 ;DECnet-10 won't allow a
; task name, so skip that
>; End of T10
T20,< ;DECnet-10 will not allow descriptors
; DESC (2) setup:
HRLI T1,.TYPE ;Get DESC's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.73 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.73 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@2(ARG) ;[51][7] Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
CAILE T3,SDESCF ;Check for valid count
MOVEI T3,SDESCF ;Too big, use maximum
;[56] Only insert a "-" after the objectid if there is a descriptor
ILDB T1,T2 ;[56] Get first character in descriptor
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E15 ;[56] Yes, go to end of descriptor code
PUSH P,T1 ;[56] Otherwise, save this character
MOVEI T1,"-" ;[56] Get a "-"
IDPB T1,T4 ;[56] ... and store it
POP P,T1 ;[56] Restore the character
IDPB T1,T4 ;[56] ... and store it
SOS T3 ;[56] Account for this character
L.75: ILDB T1,T2 ;Get a byte
JUMPE T1,.E15 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E15 ;Yes, end string
IDPB T1,T4 ;Store byte
SOJG T3,L.75 ;Do all bytes
JRST .E15 ;End of string
; FORTRAN code:
L.73: XMOVEI T2,@2(ARG) ;[51]Get array address
HLL T2,[POINT 7,0] ;Make a byte pointer
SETZM T3 ;Byte count
;[56] Only insert a "-" after the objectid if there is a descriptor
ILDB T1,T2 ;[56] Get first character in descriptor
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E15 ;[56] Yes, go to end of descriptor code
T20,< PUSH P,T1 ;[56] Otherwise, save this character
MOVEI T1,"-" ;[56] Get a "-"
IDPB T1,T4 ;[56] ... and store it
POP P,T1 ;[56] Restore the character
>; End of T20
IDPB T1,T4 ;[56] ... and store it
AOS T3 ;[56] Account for this character
L.76: ILDB T1,T2 ;Get a byte
AOS T3 ;Increment byte count
JUMPE T1,.E15 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E15 ;Yes, end string
IDPB T1,T4 ;Store byte
CAIGE T3,SDESCF ;Check for valid count
JRST L.76 ;Loop
; End of DESC, store a "."
.E15:
;[56] MOVEI T1,"." ;Get the character
;[56] IDPB T1,T4 ;... and store it.
>; End of T20
; TASKN (3) setup:
HRLI T1,.TYPE ;Get TASKN's type
HRRI T1,3(ARG) ;...
LDB T1,T1 ;...
T10,< MOVE T4,[POINT 8,BL$DPT+.NSAST]> ;Start TASK string
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.77 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.77 ;[7] For now, anything else is FORTRAN
; COBOL code:
XMOVEI T1,@3(ARG) ;[51][7] Address of two-word descriptor
MOVE T2,0(T1) ;Byte pointer
LDB T3,[POINT 6,T2,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN OAWRNG ;[7] Wrong type
HRRZ T3,1(T1) ;Byte count
CAILE T3,STASKN ;Check for valid count
MOVEI T3,STASKN ;Too big, use maximum
T10,< HRLM T3,BL$DPT+.NSASL> ;Save byte count in string desc. block
;[56] Only insert a "." if there is a taskname.
ILDB T1,T2 ;[56] Get first character in taskname
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E16 ;[56] Yes, go to end of taskname code
T20,< PUSH P,T1 ;[56] Otherwise, save this character
MOVEI T1,"." ;[56] Get a "."
IDPB T1,T4 ;[56] ... and store it
POP P,T1 ;[56] Restore the character
>; End of T20
IDPB T1,T4 ;[56] ... and store it
SOS T3 ;[56] Account for this character
L.79: ILDB T1,T2 ;Get a byte
JUMPE T1,.E16 ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST .E16 ;Yes, end string
IDPB T1,T4 ;Store byte
SOJG T3,L.79 ;Do all bytes
JRST .E16 ;End of string
; FORTRAN code:
L.77: XMOVEI T2,@3(ARG) ;[51]Get array address
HLL T2,[POINT 7,0] ;Make a byte pointer
SETZM T3 ;Byte count
;[56] Only insert a "." if there is a taskname.
ILDB T1,T2 ;[56] Get first character in taskname
CAIE T1,40 ;[56] Is it blank
CAIN T1,0 ;[56] ... or null?
JRST .E16 ;[56] Yes, go to end of taskname code
T20,< PUSH P,T1 ;[56] Otherwise, save this character
MOVEI T1,"." ;[56] Get a "."
IDPB T1,T4 ;[56] ... and store it
POP P,T1 ;[56] Restore the character
>; End of T20
IDPB T1,T4 ;[56] ... and store it
AOS T3 ;[56] Account for the character
L.80: ILDB T1,T2 ;Get a byte
JUMPE T1,L.80A ;Null? Yes, end string
CAIN T1,40 ;Or blank?
JRST L.80A ;Yes, end string
AOS T3 ;Increment byte count
IDPB T1,T4 ;Store byte
CAIGE T3,STASKN ;Check for valid byte count
JRST L.80 ;Loop
L.80A:
T10,< HRLM T3,BL$DPT+.NSASL> ;Save byte counter
; End of TASKN, store a null to make ASCIZ
.E16:
T20,< SETZ T1, ;Get a null
IDPB T1,T4 ;... and store it.
MOVE T1,[POINT 7,TEMPST] ;Get DECnet descriptor
MOVEM T1,DESC ;... and store it.
>; End of T20
; WAIT (4) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get WAIT's type
HRRI T1,4(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.110 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN OAWRNG ;Anything else is trouble
>; End IFN TCK
L.110: XMOVEI T1,@4(ARG) ;[51]Get WAIT code's address
MOVEM T1,WAIT ;Save it
; End of parameter set-up.
JRST .LOPEN ;Join common code
PRGEND ;End of NFOPP
TITLE .LOPEN Open a logical link
ENTRY .LOPEN
SEARCH TTTUNV
TTTINI
T10,< ENTRY .NSPIN
EXTERN .UPEVT,.CNEVT,.NSPER,XPN$DPSI
>; End of T10
T20,< EXTERN .JSER,.UPEVT>
; LOPEN (2)
; Open a logical link.
; NETLN: link number
; CODE: byte size (if active)
; TYPE: link type
; WAIT: wait code
.LOPEN: SKIPN START ;Interrupt system started yet?
CALL PSINIT ;No, go do it
T20,< MOVE T2,[-MAXLL,,0] ;Check logical link tables for room
FINDLL: MOVE T3,LLJFN(T2) ;In use?
JUMPE T3,GOTLL ;Got a free slot?
AOBJN T2,FINDLL ;Keep looking
RETURN OA2MNY ;Fatal error, no slots
GOTLL: HRRZM T2,@NETLN ;Save slot number
HRRZ T2,T2 ;Get slot number
MOVE T1,CODE ;Get byte size
MOVEM T1,CODES(T2) ;Save it
MOVX T1,GJ%SHT ;Short form
MOVE T2,DESC ;File spec pointer
GTJFN% ;Get a JFN
ERJMP .JSER ;JSYS error
MOVE T2,@NETLN ;Get slot number
HRRZM T1,LLJFN(T2) ;Save JFN
;**; [63] Remove code starting GOTLL + 12 CLR 11-Mar-83
;[63] MOVE T3,CODE ;Byte size
;[63] CAIN T3,^D36 ;If 36, image mode, so use 8
;[63] MOVEI T3,^D8 ;...
;[63] ADDI T3,4400 ;Make a byte pointer
;[63] LSH T3,^D24 ;Shift it
;[63] HLLM T3,LLEVNT(T2) ;Save byte pointer
MOVE T3,CODE ;Byte size again
SKIPE T3 ;If passive or
CAIN T3,^D36 ;... if 36 (image mode),
MOVEI T3,^D8 ;... use 8 for bytesize in OPENF%.
LSH T3,^D30 ;Shift again
MOVX T2,<OF%RD+OF%WR> ;Read and write n bit bytes
ADD T2,T3 ;Include in T2
>; End of T20
; LNKOPN (2.1)
; Open the link.
; NETLN: slot number
; TYPE: link type
; WAIT: wait code
LNKOPN:
T20,< OPENF% ;Open the logical link
ERJMP .JSER ;Failure
MOVE T1,@NETLN ;Get slot number
MOVE T3,[MO%SRV+MO%WFC] ;Fake status for passive task
MOVE T2,TYPE ;Get type
CAIE T2,0 ;Skip if passive
MOVE T3,[MO%WCC] ;Fake status for active task
MOVEM T3,LLSTAT(T1) ;Save it
MOVE T1,@NETLN ;Our JFN
MOVE T1,LLJFN(T1) ;Our JFN
MOVEI T2,.MOACN ;Set up interrupts
MOVE T4,@NETLN ;
MOVE T4,CHAN ;Channel number
SETZ T3, ;This makes the bit mask for MTOPR:
LSH T4,^D9 ;Connect, interrupt, and data
ADD T3,T4 ; all on channel CHAN (PSINUM)
LSH T4,^D9 ;...
ADD T3,T4 ;...
LSH T4,^D9 ;...
ADD T3,T4 ;...
MTOPR% ;Do it
ERJMP .JSER ;Error?
MOVE T1,@NETLN ;Get offset
CALL .UPEVT ;Update event word
>; End of T20
T10,< MOVE T1,NUMLL ;Get current active LL
CAIL T1,MAXLL ;Already to max?
RETURN TOOMNY ;Must stop here
SKIPE TYPE ;Active or passive?
SKIPA T1,[XWD .NSFEA,.NSAA1+1] ;Active
MOVE T1,[XWD .NSFEP,.NSAA1+1] ;Passive
MOVEM T1,BL$NSP+.NSAFN ;Store in NSP. arg blk
SETZM BL$NSP+.NSACH ;Zero channel for now
MOVEI T1,BL$CON ;Save connect block location
MOVEM T1,BL$NSP+.NSAA1
MOVEI T1,BL$NSP
SETZM @NETLN ;In case error
NSP. T1, ;Open Task
JRST .NSPER ;Check error code
MOVE T1,BL$NSP+.NSACH ;Get assigned channel number
HRRZ T2,T1 ;Just channel number
CAILE T2,MAXLL ;Too high for us?
JRST [MOVEM T2,BL$NSP+.NSACH ;Yes, must release this channel
MOVE T2,[XWD .NSFAB,.NSACH+1]
MOVEM T2,BL$NSP+.NSAFN
MOVEI T2,BL$NSP
NSP. T2,
JFCL
RETURN TOOMNY] ;And stop user
MOVEM T1,LLSTAT(T1) ;Save away
HRRZM T1,@NETLN ;Tell user
MOVE T3,CODE ;Byte size
MOVEM T3,CODES(T1) ;Save it for later
CAIN T3,^D36 ;If 36, image mode, so use 8
MOVEI T3,^D8 ;...
ADDI T3,4400 ;Make a byte pointer
LSH T3,^D24 ;Shift it
HLLM T3,LLEVNT(T1) ;Save byte pointer
MOVEI T2,BL$ILN ;Size of a saved info block
IMULI T2,-1(T1) ;Offset of this links info block
ADDI T2,BL$INF ;Location of this links info block
MOVE T3,T2 ;Save it
HRL T2,T2 ;In both halves
SETZM (T2) ;Clear first word
ADDI T2,1 ;Make a BLT pointer
BLT T2,BL$ILN(T3) ;BLT it to zeros
MOVE T1,[XWD .NSFPI,.NSAA1+1] ;Assign PSI reason NSP. function
MOVEM T1,BL$NSP+.NSAFN
MOVEI T1,(NS.STA!NS.IDA!NS.NDA) ;All reasons
MOVEM T1,BL$NSP+.NSAA1
MOVEI T1,BL$NSP
NSP. T1, ;Enable PSI ints for this link
JRST .NSPER ;Check error code
AOS NUMLL ;One more active link
>; End of T10
MOVE T1,@WAIT ;Get wait code
CAIE T1,WAITLY ;Wait for the open?
RETURN OAOK.. ;No, return OK
; CHKCON (2.1.1)
; Wait for a connection.
; NETLN: slot number
CHKCON: MOVE T1,@NETLN ;Get event word
MOVE T2,LLEVNT(T1) ;Connected yet?
CHKCN1: TRZE T2,EV.CON ;Turn off event bit
JRST [MOVEM T2,LLEVNT(T1) ;Turn off event bit
RETURN OAOK..] ; and return
TRNE T2,EV.ABT+EV.DIS ;Abort or disconnect?
RETURN OAABRJ ;Yes, error return
CALL .UPEVT ;Update event word in case lost INT
HRRZ T2,LLEVNT(T1) ;Get event info back
JUMPN T2,CHKCN1 ;If something there, go check it
MOVEI T1,DISTIM ;Else, go to sleep
DISMS% ;
JRST CHKCON ;Got an interrupt, was it for us?
T10,<
; .NSPIN
; Initialize the NSP. Connect block
; Source and Destination Process Descriptor Blocks
; Various String Pointers (Node Name, User ID, etc.)
;
.NSPIN: MOVE T1,[XWD BL$BEG,BL$BEG+1] ;Zero string area
SETZM BL$BEG
BLT T1,BL$END-1
MOVEI T1,.NSCUD+1 ;Initialize connect block
MOVEM T1,BL$CON+.NSCNL ;Length
MOVEI T1,BL$NOD
MOVEM T1,BL$CON+.NSCND ;Host string pointer
MOVEI T1,BL$SPD
MOVEM T1,BL$CON+.NSCSD ;Source process desc. blk.
MOVEI T1,BL$DPD
MOVEM T1,BL$CON+.NSCDD ;Destination process desc. blk.
MOVEI T1,BL$USR
MOVEM T1,BL$CON+.NSCUS ;User ID string pointer
MOVEI T1,BL$PAS
MOVEM T1,BL$CON+.NSCPW ;Password string pointer
MOVEI T1,BL$ACC
MOVEM T1,BL$CON+.NSCAC ;Account string pointer
MOVEI T1,BL$OPT
MOVEM T1,BL$CON+.NSCUD ;Optional user data string pointer
MOVE T1,[XWD BL$DPD,BL$DPD+1] ;Clear dest. proc. desc. blk.
SETZM BL$DPD
BLT T1,BL$DPD+.NSDPN-1
MOVEI T1,.NSDPN+1 ;Initialize block length
MOVEM T1,BL$DPD+.NSDFL
MOVEI T1,BL$DPT ;Pointer to task name
MOVEM T1,BL$DPD+.NSDPN ;Store in desc. blk.
MOVE T1,[XWD BL$SPD,BL$SPD+1] ;Clear src. proc. desc. blk.
SETZM BL$SPD
BLT T1,BL$SPD+.NSDPN-1
MOVEI T1,.NSDPN+1 ;Initialize block length
MOVEM T1,BL$SPD+.NSDFL
MOVEI T1,BL$SPT ;Pointer to task name
MOVEM T1,BL$SPD+.NSDPN ;Store in desc. blk.
MOVE T1,[XWD SHOSTN,1+<<SHOSTN+3>/4>]
MOVEM T1,BL$NOD+.NSASL ;Intialize NODE sting pointer
MOVE T1,[XWD SUSRID,1+<<SUSRID+3>/4>]
MOVEM T1,BL$USR+.NSASL ;Intialize USERID sting pointer
MOVE T1,[XWD SPASWD,1+<<SPASWD+3>/4>]
MOVEM T1,BL$PAS+.NSASL ;Intialize PASSWORD sting pointer
MOVE T1,[XWD SACCNT,1+<<SACCNT+3>/4>]
MOVEM T1,BL$ACC+.NSASL ;Intialize ACCOUNT sting pointer
MOVE T1,[XWD SOPTDT,1+<<SOPTDT+3>/4>]
MOVEM T1,BL$OPT+.NSASL ;Intialize USRDATA sting pointer
MOVE T1,[XWD STASKN,1+<<STASKN+3>/4>]
MOVEM T1,BL$DPT+.NSASL ;Intialize DEST TASK NAME sting pointer
MOVEM T1,BL$SPT+.NSASL ;Intialize SRC TASK NAME sting pointer
RET
>; End of T10
; PSINIT (2.2)
;
; Initialize the interrupt system.
;[46]
;[46] First, try to use FUNCT. in the OTS. to get a channel.
PSINIT:
T20,< SETOM START ;Indicate that we have begun
XMOVEI T1,PC ;[51][35] Set up PC pointer
MOVEM T1,PCPTR ;[35] Will change if FUNCT. succeeds
IFN OTSFNC,< ;[35] Code to get an interrupt from OTS
HRLZI T1,-6 ;[35] -count,,0
MOVEM T1,FNCBLK ;[35] ... to addr-1
MOVE T1,[Z 2,FNCFNC] ;[35] Function code
TLO T1,400000 ;[51] Set sign bit!
MOVEM T1,FNCBLK+1 ;[35] ... to addr
MOVEI T1,GPSI ;[35] Set function code
MOVEM T1,FNCFNC ;[35] ... in parameter
MOVE T1,[Z 17,FNCCOD] ;[51][35] Error code prefix (not used)
TLO T1,400000 ;[51] Set sign bit!
MOVEM T1,FNCBLK+2 ;[35] ... to addr+1
XMOVEI T1,[ASCIZ 'DIT'] ;[51][35] But set it up anyways
MOVEM T1,FNCCOD ;[35] ... for the future
MOVE T1,[Z 2,FNCSTS] ;[35] Return status
TLO T1,400000 ;[51] Set sign bit!
MOVEM T1,FNCBLK+3 ;[35] ... to addr+2
MOVE T1,[Z 2,CHAN] ;[35] Interrupt channel number
TLO T1,400000 ;[51] Set sign bit!
MOVEM T1,FNCBLK+4 ;[35] ... to addr+3
SETZM CHAN ;[35] Use -1 to get any user channel
MOVE T1,[Z 2,FNCLEV] ;[35] Level number
TLO T1,400000 ;[51] Set sign bit!
MOVEM T1,FNCBLK+5 ;[35] ... to addr+4
MOVEI T1,PSILEV ;[35] Get our level number
MOVEM T1,FNCLEV ;[35] ... and store it
MOVE T1,[Z 2,FNCINT] ;[35] Address of interrupt routine
TLO T1,400000 ;[51] Set sign bit!
MOVEM T1,FNCBLK+6 ;[35] ... to addr+5
XMOVEI T1,INT ;[51][35] Get interrupt routine address
MOVEM T1,FNCINT ;[35] ... and store it
XMOVEI ARG,FNCBLK+1 ;[51][35] Set up parameter block
PUSHJ P,FUNCT. ;[35] Call the OTS routine
MOVE T1,FNCSTS ;[35] Check status
JUMPL T1,NOFNC. ;[35] No FUNCT. for this
HRLZI T2,400000 ;[35] Get a bit
MOVN T1,CHAN ;[35] Get -channel
LSH T2,0(T1) ;[35] Move bit to channel position
MOVEI T1,.FHSLF ;[35] This process
AIC% ;[35] Activate this interrupt channel
ERJMP [POP P,0(P) ;[46] Pop the stack
JRST .JSER ] ;[46] Go to JSYS error handler
MOVEI T1,.FHSLF ;[46] This process
RIR% ;[46] Try to get chn,,lev tables
ERJMP TRYX ;[46] Failed, try it with XRIR%
SETOM XFLAG ;[46] Remember that RIR% worked
HLRZ T2,T2 ;[46] Get level table address
JRST RIRCOM ;[46] Join common code
TRYX: SETZM XFLAG ;[46] Remember to use XRIR%
MOVEI T1,.FHSLF ;[37] This process
MOVEI T2,3 ;[37] Size of block
MOVEM T2,XBLOCK ;[37] ... store it
MOVEI T2,XBLOCK ;[37] Argument block address
XRIR% ;[37] Try XRIR%
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
AOS PCPTR ;[46] PC address is in second word
MOVE T2,XBLOCK+1 ;[37] Get level table address
RIRCOM: MOVE T1,<PSILEV-1>(T2) ;[37] [35] Get OTS's PC address
MOVEM T1,PCPTR ;[35] Save as our PC
SKIPN XFLAG ;[46] Skip if non-extended interrupts
AOS PCPTR ;[46] Otherwise, address is in next word
MOVEI T1,.FHSLF ;[35] This process
EIR% ;[35] Make sure interrupts enabled
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
RET ;[35] Return
NOFNC.: > ;[35] End of INF OTSFNC
;[46] Next, try to use PA1050, if it is around.
MOVEI T1,.FHSLF ;For this process
GCVEC% ;... see if PA1050 is here!
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
JUMPL T2,NOPAT ;No. Good! Do it ourselves.
JUMPE T3,NOPAT ;...
MOVEI T1,.FHSLF ;[46] Try RIR% to check available chans
RIR% ;[46] Try to get level,,channel tables
ERJMP NORIR. ;[46] Not RIR%, try XRIR%
SETOM XFLAG ;[46] Remember RIR% worked
HRRZ T1,T2 ;[46] Put channel table in T1
JRST NOFNCC ;[46] Join common code
;[46] We should never get here at present: PA1050 does a SIR%.
NORIR.: SETZM XFLAG ;[46] Remember that this is XRIR%
MOVEI T1,.FHSLF ;[37] This process
MOVEI T2,3 ;[37] Size of argument block
MOVEM T2,XBLOCK ;[37] ... store it
XMOVEI T2,XBLOCK ;[51][37] Argument block address
XRIR% ;[37] Do XRIR%
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
MOVE T1,XBLOCK+2 ;[37] Get channel table address in T1
NOFNCC: SKIPN 0(T1) ;[37] [12] Channel zero in use?
HRLI T4,0 ;[12] No, use it
SKIPN 1(T1) ;[12] Channel one in use?
HRLI T4,1 ;[12] No, use it in preference
SKIPN 2(T1) ;[12] Channel two in use?
HRLI T4,2 ;[12] No, use it in preference
;[12] This code should be changed if PA1050 is changed to allow more
;[12] user interrupt channels.
HLRZM T4,CHAN ;[12] Store channel used in CHAN
MOVEI T2,6 ;[12] COMPT.: function code 6
MOVE T3,[PSILEV,,INT] ;[12] PSI level,,trap address
HRRI T4,PC ;[12] channel,,trap PC
MOVE T1,[3,,T2] ;[12] Address of block (T2-T4)
;[12] MOVE T1,[3,,[6 ;Yes, cooperate with COMPT. 6
;[12] PSILEV,,INT ;... level,, trap address
;[12] PSINUM,,PC]] ;... number,, PC
COMPT. T1, ;Do horrors
JRST [POP P,0(P) ;[46] Something awful happened!
RETURN HORROR ] ;[46] Give up!
RET ;[13] Leave
;[13] JRST PSIRET ;Leave
;[46] There is no PA1050 in memory. That is probably just as well.
;[46] Use an interrupt from the already-set-up channel table, if any.
NOPAT: MOVEI T1,.FHSLF ;[46] This process
RIR% ;[46] Try RIR% first
ERJMP NOPAT1 ;[46] No
SETOM XFLAG ;[46] Remember that RIR% worked
JUMPE T2,FIRST ;[46] No tables set up; go do it
JRST CONPSI ;[46] Already set up, join common code
NOPAT1: SETZM XFLAG ;[46] Remember that this is XRIR%
MOVEI T1,.FHSLF ;[37] This process
MOVEI T2,3 ;[37] Length of block
MOVEM T2,XBLOCK ;[37] ... store in block
XRIR% ;[37] Try XRIR% first
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
AOS PCPTR ;[46] PC address is in second word
MOVE T3,XBLOCK+1 ;[37] Get level table address
JUMPE T3,FIRST ;[37] Nothing, so set it up
;[46] Set up our entry for extened JSYS-type tables:
CONX: XMOVEI T1,PC ;[51][37] Where to hold our PC
MOVE T3,XBLOCK+1 ;[37] Level table address
MOVEM T1,<PSILEV-1>(T3) ;[37] Use level 2
MOVE T2,XBLOCK+2 ;[37] Address of channel table
MOVE T1,[BYTE (6)PSILEV(12)0(18)INT] ;[46] Level and routine
MOVEM T1,PSINUM(T2) ;[37] Save it
MOVEI T1,.FHSLF ;[37] This process
MOVX T2,1B<PSINUM> ;[37] Channel PSINUM
AIC% ;[37] Activate this interrupt channel
;[37] Note that PA1050 will do this
;[37] for us by itself if it is involved
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
EIR% ;[37] Enable interrupts
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
JRST PSIRET ;[37] Return
;[46] Set up our own tables for non-extended type interrupts:
CONPSI: XMOVEI T1,PC ;[51]Where to hold our PC
HLRZ T3,T2 ;Level table address
MOVEM T1,<PSILEV-1>(T3) ;Use level 2
HRRZ T2,T2 ;Address of channel table
MOVE T1,[PSILEV,,INT] ;Level,,Routine
MOVEM T1,PSINUM(T2) ;Save it
MOVEI T1,.FHSLF ;This process
;[17] Note: PA1050 does an AIC% for us (in SETPSI) if it is involved.
MOVX T2,1B<PSINUM> ;[17] Channel PSINUM
;[17] MOVEI T2,1 ;Channel PSINUM
AIC% ;Activate this interrupt channel
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
EIR% ;Enable interrupts (doesn't hurt)
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
PSIRET: MOVEI T1,PSINUM ;Channel PSINUM
MOVEM T1,CHAN ;Remember it
RET ;
;[46] Final possibility: NO ONE has already set up interrupts, so do
;[46] so ourselves!
FIRST: MOVEI T1,.FHSLF ;[37] This process
MOVEI T2,3 ;[37] 3-word block
MOVEM T2,XBLOCK ;[37] ... store size in block
XMOVEI T2,LEVTAB ;[51][37] Level table address
MOVEM T2,XBLOCK+1 ;[37] ... store it in block
XMOVEI T2,CHNTAB ;[51][37] Channel table address
MOVEM T2,XBLOCK+2 ;[37] ... store it in block
XSIR% ;[37] Try XSIR% first
ERJMP NOXSIR ;[37] ...must be a KS
SETZM XFLAG ;[46] Remember that XSIR% worked
AOS PCPTR ;[46] PC address is in second word
JRST CONX ;[37] Go on
NOXSIR: MOVEI T1,.FHSLF ;[37] For this process
MOVE T2,[LEVTAB,,CHNTAB] ;
;[37] MOVEM T1,LEVCHN ;Save it
SIR% ;Set up level and channel tables
ERJMP [POP P,0(P) ;[46] Clean up stack
JRST .JSER ] ;[46] Go to JSYS error handler
SETOM XFLAG ;[46] Remember that SIR% worked
JRST CONPSI ;Go on
>; End of T20
; TOPS-10 PSI initialization
;
; Notes: COBOL-10 V12B and FORTRAN-10 V7.0 do not use PSI
;
; Hopefully, no users do either. We must have it, but it is
; very hard to share between non-cooperating routines. In
; 7.01 they added a new PSI UUO (PISAV.) to get the PSI vector
; address if it was already set up. This is useful, but not
; totally sufficient. Which offset can we use? We could look
; for a free one (four words of zeros), but that may be
; allocated to some other uninitialized routine. We could put
; ourselves into the interrupt chain on the first interrupt
; block (each interrupt comes to us, we see it if is for us
; (DECnet), if not, pass it to the previous owner of this
; interrupt block). But someone might overwrite that block,
; then we stop getting interrupts! So, until we can solve this
; dilema, we will initialize the PSI system, and use it all
; by ourselves!
T10,< SETOM START ;Indicate that we have begun
PUSH P,[EXP INT] ;Put address of INT handler on stack
CALL XPN$DPSI ;Call the external routine to setup
;Everything. This routine is part
; of BLISSnet-10 and will arbitrate
; between us and any other DECnet users
POP P,(P) ;Clear the stack
RET ;All done
>; End of T10
; INT
;
; Process interrupts.
; This routine is called whenever an interrupt is seen on
; channel CHAN.
INT:
T20,< DMOVEM T1,T1T2 ;Save T1 and T2
MOVE T1,@PCPTR ;[35] Address of interrupted code
MOVE T2,-1(T1) ;Get the instruction
CAME T2,[DISMS%] ;Wait instruction
JRST GOBACK ;DEBRK
TXO T1,1B5 ;User mode flag
MOVEM T1,@PCPTR ;[35] Replace
GOBACK: DMOVE T1,T1T2 ;Restore ACs
DEBRK% ;Go back
>; End of T20
T10,<
MOVE T1,-1(P) ;Get link status from XPN$DPSI
HRRZ T2,T1 ;Get just channel number
CAIG T2,MAXLL ;Is it one of ours?
SKIPN LLSTAT(T2)
CAIA ;No, skip it
CALL .CNEVT ;Interpret it
RET ;Return to XPN$DPSI and dismiss
>; End of T10
PRGEND ;End of .LOPEN
TITLE NFACC Accept a link connection
ENTRY NFACC
SEARCH TTTUNV
TTTINI
T20,< EXTERN .JSER,.UPEVT>
T10,< EXTERN .NSPER>
; NFACC (3A)
;
; Accept a connection received on a passive link which
; has been opened and which has had a connect event.
;
; Note: A connection could be implicitly accepted by writing to the
; network JFN, reading from the network JFN, or going into an input
; or output wait state.
;
; CALL NFACC USING NETLN, TYPE, COUNT, DATA.
; RETCOD = NFACC (NETLN, TYPE, COUNT, DATA)
;
; NETLN network logical name, set by the NFOPP routine.
; TYPE Type of data to be transmitted by this link:
; LASCII: ASCII (active task opened link with NFOPA)
; LBIN: binary (active task opened link with NFOPB)
; L8BIT: 8-bit byte (active task opened link with NFOP8).
; COUNT number of characters of optional data sent.
; DATA optional ASCII data.
; Return code and function value:
; ACWRNG: an argument is of the wrong type
; ACOK..: connection accepted
; HORROR: JSYS error.
NFACC: SAVAC ;Save ACs
; Set up parameters:
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.12 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN ACWRNG ;Anything else is trouble
>; End IFN TCK
L.12: XMOVEI T1,@0(ARG) ;[51]Address of NETLN
MOVEM T1,NETLN ;Save it
SKIPL T1,@NETLN ;Get value given. Can not be negative
CAILE T1,MAXLL ;Or greater than MAXLL
RETURN ACWRNG ;Return error
; TYPE (1) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get TYPE's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.53 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN ACWRNG ;Anything else is trouble
>; End IFN TCK
L.53: MOVE T1,@1(ARG) ;Get TYPE
MOVEI T2,^D8 ;Assume 8-bit bytes
CAIN T1,LASCII ;ASCII?
MOVEI T2,^D7 ;Yes, remember it
CAIN T1,LBIN ;Binary?
MOVEI T2,^D36 ;Yes, remember it
CAILE T1,L8BIT ;8-bit?
RETURN ACWRNG ;None of the above is no good
MOVEM T2,CODE ;Store data mode
MOVE T1,@NETLN ;Get slot number
MOVEM T2,CODES(T1) ;Save byte size
;**; [63] Remove code starting at L.53 + 13 CLR 11-Mar-83
;[63] CAIN T2,^D36 ;If 36 bits,
;[63] MOVEI T2,^D8 ;... use 8 bits
;[63] ADDI T2,4400 ;Make byte pointer
;[63] LSH T2,^D24 ;... and shift into position
;[63] HLLM T2,LLEVNT(T1) ;Store the byte pointer for this slot
; COUNT (2) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get COUNT's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.13 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN ACWRNG ;Anything else is trouble
>; End IFN TCK
L.13: XMOVEI T1,@2(ARG) ;[51]Address of byte count
MOVEM T1,COUNT ;Save it
; DATA (3) setup:
HRLI T1,.TYPE ;Get DATA's type
HRRI T1,3(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.15 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.15 ;[7] Otherwise, assume FORTRAN for now
; COBOL code:
XMOVEI T1,@3(ARG) ;[51][7] Address of two-word descriptor
MOVE T1,0(T1) ;Byte pointer
LDB T3,[POINT 6,T1,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN ACWRNG ;[7] Wrong type
JRST .E2 ;...
; End of COBOL code.
; FORTRAN code:
L.15: XMOVEI T1,@3(ARG) ;[51]String address
HLL T1,[POINT 7,0] ;Make a byte pointer
; End of FORTRAN code.
.E2: MOVEM T1,DATA ;Save it
; End of parameter set-up code.
; ACC (3)
; Accept a connection.
; NETLN: link number
; COUNT: count of optional data
; DATA: optional data
ACC:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MOCC ;Accept the connection
MOVE T3,DATA ;Get byte pointer
MOVE T4,@COUNT ;Character count for data
CAILE T4,SOPTDT ;Check for valid size
MOVEI T4,SOPTDT ;Too big, use maximum
MTOPR% ;Accept it
ERJMP .JSER ;Error?
MOVE T1,@NETLN ;Offset
CALL .UPEVT ;Update event word
RETURN ACOK.. ;
>; End of T20
T10,< MOVE T1,@NETLN ;Get channel number
HRRZM T1,BL$NSP+.NSACH ;Save in NSP. arg block
MOVE T1,@COUNT ;Get user byte count
MOVEI T2,.NSACH+1 ;Assume short arg type
SKIPN T1 ;Zero bytes?
JRST ACC2 ;Don't send it then
CAILE T1,SOPTDT ;More than the max?
MOVEI T1,SOPTDT ;Make it the max
HRLM T1,BL$OPT+.NSASL ;Save in string desc.
MOVE T2,DATA ;Pointer to user data
MOVE T3,[POINT 8,BL$OPT+.NSAST] ;Pointer to string block
ACC1: ILDB T4,T2 ;Get a char
IDPB T4,T3 ;Store a char
SOJG T1,ACC1 ;Loop
MOVEI T1,BL$OPT ;Update NSP. arg blk.
MOVEM T1,BL$NSP+.NSAA1
MOVEI T2,.NSAA1+1 ;Long block length
ACC2: HRLI T2,.NSFAC ;Function code (ACCEPT)
MOVEM T2,BL$NSP+.NSAFN ;Save in NSP. arg blk.
MOVEI T1,BL$NSP
NSP. T1, ;Do it
JRST .NSPER ;Look at error code
RETURN ACOK.. ;
>; End of T10
PRGEND ;End of NFACC
TITLE NFRCV Receive data over a logical link
ENTRY NFRCV
SEARCH TTTUNV
TTTINI
EXTERN .UPEVT
T10,< EXTERN .CNEVT,.NSPER>
; NFRCV (4A)
;
; Receive data over a logical link.
;
; If message mode is specified, the routine will read exactly one DECNET
; message (terminated by a DECNET segment with the EOM bit on). If
; non-message mode is specified, characters will be read from as many
; messages as necessary to get the requested number of characters, and the
; last (or only) message read from will not necessarily be exhausted.
; If a read in non-message mode is followed by a read in message mode,
; the second read may get a message fragment.
;
; If you use NFRCV with wait in non-message mode and an interrupt
; message is received, you will not get return code RCINT. until the next
; time you call NFRCV. If the cooperating task does not send enough
; data to satisfy the waiting NFRCV, your task will not see the
; interrupt message.
;
; CALL NFRCV USING NETLN, USIZE, COUNT, DATA, MSG-FLG, WAIT.
; RETCOD = NFRCV (NETLN, USIZE, COUNT, DATA, MSGFLG, WAIT)
;
; NETLN network logical name, set by NFOPA, NFOPB, NFOP8, or NFOPP.
; USIZE Message unit size. Ignored if the active side of the link was
; opened with NFOPA or NFOP8. For links opened with NFOPB, this is
; the message length unit size. Zero may be used to indicate
; words (or VAX longwords (32 bits)
; (for the local system). This parameter is currently included
; only for user convenience and does not affect how the data is
; actually transmitted through the network.
; COUNT maximum characters read in message mode, or actual count.
; In stream mode on TOPS20, this number will never exceed 2048 for
; ASCII and 8-bit links. For either mode, for both TOPS-10 and TOPS-20,
; this number will never exceed 456 words for binary links.
; Will contain actual number of characters read.
; For links opened with NFOPA, this is the number of ASCII
; characters in the message. For links opened with NFOP8,
; this is the number of sequential 8-bit bytes in the message,
; stored as the local system normally stores 8-bit bytes.
; For links opened with NFOPB, this is the number of bytes
; (of the size specified in the message unit size) or words
; (or VAX longwords (32 bit))
; read. Note that the last byte or word will be padded with
; zero bits if the message does not divide into bytes of the
; specified size, since the message is actually sent as
; 8-bit bytes.
; DATA where message will go.
; MSG-FLG message mode flag:
; MSGMSG: read one message
; MSGSTM: read COUNT characters.
; For TOPS-10 only, if MSGSTM is specified, MSG-FLG will be set
; to MSGMSG if the End-of-message flag was on in the last
; message segment read
; WAIT wait flag:
; WAITLY: wait until characters received or read fails
; WAITLN and MSG-FLG MSGMSG: return characters or error
; WAITLN and MSG-FLG MSGSTM: return message or fragment, or error.
; Return code and function value:
; RCWRNG: an argument is of the wrong type
; RCOK..: COUNT characters are in DATA
; RCABRJ: link disconnected or aborted,
; COUNT contains characters read to date
; RCINT.: interrupt received must be read first using NFRCI
; RCOVRN: overrun. For TOPS-20, no data is lost. Retry with
; larger buffer size. For TOPS-10, data was lost (MSGMSG mode
; only, with buffer too small. To avoid this, one could read
; message segments with MSGSTM until end-of-message (MSGMSG)
; is returned for last segment of the message).
; RCNENF: this much data not available (TOPS-20), or no data
; available (TOPS-10/20).
; HORROR: JSYS error.
NFRCV: SAVAC ;Save the ACs
; Set up parameters
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.16 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RCWRNG ;Anything else is trouble
>; End IFN TCK
L.16: XMOVEI T1,@0(ARG) ;[51]Address of NETLN
MOVEM T1,NETLN ;Save it
SKIPL T1,@NETLN ;Get value given. Can not be negative
CAILE T1,MAXLL ;Or greater than MAXLL
RETURN RCWRNG ;Return error
; USIZE (1) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get USIZE's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.54 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RCWRNG ;Anything else is trouble
>; End IFN TCK
L.54: XMOVEI T1,@1(ARG) ;[51]Address of USIZE
MOVEM T1,USIZE ;Save it
; COUNT (2) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get COUNT's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.17 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RCWRNG ;Anything else is trouble
>; End IFN TCK
L.17: XMOVEI T1,@2(ARG) ;[51]Address of byte count
MOVEM T1,COUNT ;Save it
MOVE T1,@COUNT ;Get byte count
MOVE T2,@NETLN ;Get our index
MOVE T3,CODES(T2) ;Get link type code
CAIE T3,^D36 ;Binary?
JRST L.122 ;No, skip this calculation
MOVE T3,@USIZE ;Get byte size
SKIPN T3 ;Zero?
MOVEI T3,^D36 ;Yes, use words
IMUL T3,T1 ;Count * bytesize = bits
IDIVI T3,^D8 ;Divided by 8 for 8-bit bytes
SKIPE T4 ;No remainder?
AOS T3 ;Remainder, account for it
MOVEM T4,SLOP ;Save left-over unused bytes
MOVEM T3,@COUNT ;And use THIS value
; DATA (3) setup:
L.122: HRLI T1,.TYPE ;Get DATA's type
HRRI T1,3(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.19 ;...
CAIN T1,.ST ;COBOL byte string
JRST L.18 ;Do it
JRST L.19 ;Otherwise assume FORTRAN for now
; COBOL code:
L.18: XMOVEI T1,@3(ARG) ;[51]Address of two-word descriptor block
MOVE T1,0(T1) ;Byte pointer
JRST .E3 ;...
; End of COBOL code.
; FORTRAN code:
L.19: XMOVEI T1,@3(ARG) ;[51]String address
HLL T1,[POINT 7,0] ;Make a byte pointer
MOVE T2,@NETLN ;Get link index
MOVE T2,CODES(T2) ;Get byte size
CAIE T2,^D7 ;Skip if 7-bit
HLL T1,[POINT 8,0] ;Otherwise, use 8-bit pointer
; End of FORTRAN code.
.E3: MOVEM T1,DATA ;Save it
; MSG-FLG (4) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get MSG-FLG's type
HRRI T1,4(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.20 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RCWRNG ;Anything else is trouble
>; End IFN TCK
L.20: XMOVEI T1,@4(ARG) ;[51]Message flag
MOVEM T1,EOM ;Save it
; WAIT (5) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get WAIT's type
HRRI T1,5(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.21 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RCWRNG ;Anything else is trouble
>; End IFN TCK
L.21: XMOVEI T1,@5(ARG) ;[51]Wait flag
MOVEM T1,WAIT ;Save it
; End of setting up parameters.
; CHKDAT (4)
; Receive data over a link.
; NETLN: link number
; COUNT: count of data returned
; EOM: message-mode flag
; DATA: returned data
CHKDAT: MOVE T1,@NETLN ;Slot number
HRRZ T2,LLEVNT(T1) ;Get event flag
JUMPN T2,CHKAVL ;If somthing there, proceed
CALL .UPEVT ;Update event word in case lost INT
MOVE T2,LLEVNT(T1) ;Get newest info
; CHKAVL (4.1)
; Check for available data.
; NETLN: link number
; EOM: message-mode flag
CHKAVL: TXNE T2,EV.INT ;Interrupt message to read?
JRST [SETZM @COUNT ;No data returned
RETURN RCINT.] ;
T20,< MOVE T1,@EOM ;Message mode flag
CAIN T1,MSGMSG ;Message mode?
JRST MESS ;Yes, go do it
MOVE T1,@NETLN ;Get slot number
MOVE T1,LLJFN(T1) ;Get the JFN
SIBE% ;Any characters?
SKIPA ;Have some bytes!
JRST CHKDS ;No data yet
MOVE T1,@WAIT ;Get wait code
CAIE T1,WAITLN ;Waiting?
JRST DORCV ;Yes, go wait
CAML T2,@COUNT ;Have enough data?
JRST DORCV ;Yes, get it
MOVE T3,@NETLN ;Get link number
MOVE T3,CODES(T3) ;Get byte size
CAIE T3,^D36 ;Binary?
JRST CHKA.1 ;No, all set
IMULI T2,^D8 ;Yes, compute bits
MOVE T1,@USIZE ;Get user's desired byte size
SKIPN T1 ;Nonzero?
MOVEI T1,^D36 ;No, use words
IDIV T2,T1 ;Get bytes
SKIPE T3 ;Any remainder?
AOS T2 ;Yes, round up
CHKA.1: HRRZM T2,@COUNT ;Return how much is there
RETURN RCNENF ;Not enough for us
>; End of T20
T10,< MOVE T1,@NETLN ;Get channel number
MOVE T2,LLSTAT(T1) ;Get last status
TXNN T2,NS.NDA ;Data available?
JRST CHKDS ;No, go wait
JRST DORCV ;Yes, go receive it
>; End of T10
; CHKDS (4.2.1.1)
; Check for a disconnect.
; NETLN: link number
; COUNT: count of data returned, set to zero
; WAIT: wait flag
; DATA: returned data
CHKDS: MOVE T1,@NETLN ;Get slot number
MOVE T1,LLEVNT(T1) ;Get status
TXNE T1,EV.ABT+EV.DIS ;Aborted or disconnected?
JRST [SETZM @COUNT ;No data returned
RETURN RCABRJ] ;
MOVE T1,@WAIT ;Get wait code
CAIE T1,WAITLY ;Waiting?
JRST [SETZM @COUNT ;No, no data available yet
RETURN RCNENF] ;
MOVEI T1,DISTIM ;Yes, wait for data
DISMS% ;
JRST CHKDAT ;Go check again
; MESS (4.2)
; Handle message-mode data.
; NETLN: link number
; COUNT: count of data
; DATA: returned data
MESS:
T20,< MOVE T1,@NETLN ;Slot number
MOVE T1,LLSTAT(T1) ;Get status word
TXNN T1,MO%EOM ;Full message?
JRST MESS.2 ;No, check if disconnected or not done
MOVE T1,@NETLN ;Get slot number
MOVE T1,LLJFN(T1) ;Get JFN
SIBE% ;Get character count
JFCL ;...
CAMG T2,@COUNT ;Too many characters?
JRST DORCV ;No, do the read
MOVE T3,@NETLN ;Get link number
MOVE T3,CODES(T3) ;Get byte size
CAIE T3,^D36 ;Binary?
JRST MESS.1 ;No, all set
IMULI T2,^D8 ;Yes, compute bits
MOVE T1,@USIZE ;Get user's desired byte size
SKIPN T1 ;Nonzero?
MOVEI T1,^D36 ;No, use words
IDIV T2,T1 ;Get bytes
SKIPE T3 ;Any remainder?
AOS T2 ;Yes, round up
MESS.1: MOVEM T2,@COUNT ;Return record size
RETURN RCOVRN ;Too many characters
; We may get here if the full message exceeds 512 words. We can't do
; anything else about this monitor "feature".
MESS.2: MOVE T1,@NETLN ;Not a full message yet
MOVE T1,LLJFN(T1) ;Get JFN
SIBE% ;Get count
SKIPA ;Something there
JRST CHKDS ;No, check for a disconnect
; JRST DORCV ;Read it anyways!
>; End of T20
; DORCV (4.2.1)
; Read data.
; NETLN: link number
; COUNT: character count
; EOM: message-mode flag
; DATA: returned data
DORCV:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T2,DATA ;Get the byte pointer
MOVE T3,CODES(T1) ;Check for
CAIN T3,^D36 ;... 36 bit
;**; [63] Change at DORCV + 4 CLR 11-Mar-83
;[63] HRRI T2,TEMPST ;... and use temporary area if so.
;[63] HLL T2,LLEVNT(T1) ;Byte pointer
MOVE T2,[441000,,TEMPST] ;[63] ... and use temporary area if so
MOVE T1,LLJFN(T1) ;Get the JFN
CAIN T3,^D36 ;36 bit?
JRST [MOVEI T3,<4*TSIZE> ;Yes, set up count (4*8-bit bytes)
MOVEM T3,@COUNT ;Save count in user area
JRST .+1 ] ;... and ignore user count
MOVN T3,@COUNT ;Character count
SKIPE @EOM ;Message mode?
JRST XMESS ;Yes
SIN% ;No
ERJMP EOF ;Error?
JRST SINCON ;Go on
XMESS: SINR% ;Input
ERJMP EOF ;Error?
SINCON: ADD T3,@COUNT ;Compute characters read
MOVEM T3,@COUNT ;Return the count
MOVE T1,@NETLN ;Offset
CALL .UPEVT ;Update event word
MOVE T1,@NETLN ;Get link number
MOVE T1,CODES(T1) ;Get byte size
CAIN T1,^D36 ;36-bits?
CALL PACK ;Yes, pack bytes for the user
RETURN RCOK.. ;Yes
EOF: ADD T3,@COUNT ;Compute characters read
MOVEM T3,@COUNT ;Return it
MOVE T1,@NETLN ;
CALL .UPEVT ;Update status
MOVE T1,@NETLN ;Get slot number
MOVE T2,CODES(T1) ;Get byte size
CAIN T2,^D36 ;36-bits?
CALL PACK ;Yes, pack up data
MOVE T1,@NETLN ;Get slot number back
MOVE T1,LLEVNT(T1) ;Get event flags
TXNE T1,EV.DIS+EV.ABT ;Disconnect or abort?
RETURN RCABRJ ;Yes
RETURN HORROR ;SIN or SINR error
>; End of T20
T10,< MOVE T1,@NETLN ;Get slot number
HRRZM T1,BL$NSP+.NSACH ;Save channel in arg block
MOVE T2,DATA ;Get the byte pointer
MOVE T3,CODES(T1) ;Check for
CAIN T3,^D36 ;... 36 bit
;**; [63] Change at DORCV + 4 DPR 11-Mar-83
;[63] HRRI T2,TEMPST ;... and use temporary area if so.
;[63] HLL T2,LLEVNT(T1) ;Byte pointer
MOVE T2,[441000,,TEMPST] ;[63] ... and use temporary area if so
MOVEM T2,BL$NSP+.NSAA2 ;Save in NSP. arg block
CAIN T3,^D36 ;36 bit?
JRST [MOVEI T3,<4*TSIZE> ;Yes, set up count (4*8-bit bytes)
MOVEM T3,@COUNT ;Save count in user area
JRST .+1 ] ;... and ignore user count
MOVE T3,@COUNT ;Character count
MOVEM T3,BL$NSP+.NSAA1 ;Save in NSP. arg block
MOVE T1,[XWD .NSFDR,.NSAA2+1] ;Function READ, block length
TXO T1,NS.WAI ;To do this correctly, we need to WAIT
SKIPE @EOM ;Was message mode requested?
TXO T1,NS.EOM ;Say so to NSP.
MOVEM T1,BL$NSP+.NSAFN ;Save in arg block
MOVEI T1,BL$NSP
NSP. T1, ;Read the data
JRST .NSPER ;Check error code
MOVE T1,BL$NSP+.NSACH ;Get status
CALL .CNEVT ;Update event word
MOVE T1,@COUNT ;Get requested byte count
SKIPL BL$NSP+.NSAA1 ;If negative, we overran the buffer
SUB T1,BL$NSP+.NSAA1 ;Subtract bytes remaining
MOVEM T1,@COUNT ;Return the count transferred to user
MOVE T1,BL$NSP+.NSACH ;Get link status
SKIPE @EOM ;Message mode?
JRST DORCV1 ;Yes, skip this
MOVX T2,MSGMSG ;Flag for MSG-MSG
TXNN T1,NS.EOM ;Did we get last fragment of message?
MOVEM T2,@EOM ;Yes, tell user
DORCV1: CALL .CNEVT ;Update event word
MOVE T1,@NETLN ;Get link number
MOVE T1,CODES(T1) ;Get byte size
CAIN T1,^D36 ;36-bits?
CALL PACK ;Yes, pack bytes for the user
SKIPL BL$NSP+.NSAA1 ;If message mode, we may have lost data
RETURN RCOK.. ;No, return OK
RETURN RCOVRN ;Yes, tell user we had Overrun
>; End of T10
; PACK (4.2.1.1) Ugly but necessary
; Pack binary data received from the network in 8-bit bytes in VAX order
; (backwards) into 36-bit words and compute how many bytes (of the size
; specified by the user) were read.
; Received from the network:
; +-----+-----+-----+-----+---+ +-----+-----+-----+-----+---+ +-----+---
; | 1 | 2 | 3 | 4 | | | H5L | 6 | 7 | 8 | | | 9 | ...
; +-----+-----+-----+-----+---+ +-----+-----+-----+-----+---+ +-----+---
; Desired results:
; +---+-----+-----+-----+-----+ +-----+-----+-----+-----+---+
; | 5L| 4 | 3 | 2 | 1 | | 9 | 8 | 7 | 6 |H5 | ...
; +---+-----+-----+-----+-----+ +-----+-----+-----+-----+---+
PACK: PUSH P,T4 ;Save a register for byte loading
MOVE T3,@COUNT ;Get byte count
MOVE T1,[POINT 8,TEMPST] ;ILDB pointer to temporary area
JUMPE T3,L.116 ;If no bytes, skip moving them!
HRR T2,DATA ;Address of user data area
L.115: HRLI T2,001000 ;Byte pointer to byte #1 destination
ILDB T4,T1 ;Get byte #1
DPB T4,T2 ;Store byte #1
SOJE T3,L.116 ;Stop if done
HRLI T2,101000 ;Byte pointer to byte #2 destination
ILDB T4,T1 ;Get byte #2
DPB T4,T2 ;Store byte #2
SOJE T3,L.116 ;Stop if done
HRLI T2,201000 ;Byte pointer to byte #3 destination
ILDB T4,T1 ;Get byte #3
DPB T4,T2 ;Store byte #3
SOJE T3,L.116 ;Stop if done
HRLI T2,301000 ;Byte pointer to byte #4 destination
ILDB T4,T1 ;Get byte #4
DPB T4,T2 ;Store byte #4
SOJE T3,L.116 ;Stop if done
HRLI T2,400400 ;Byte pointer to low-order nibble (#5)
ILDB T4,T1 ;Get whole byte #5
DPB T4,T2 ;Store low-order nibble (#5)
CAIE T3,1 ;Last byte?
JRST L.123 ;No, skip this check
SKIPE SLOP ;Unused bits present?
JRST L.116 ;Yes, don't store them
L.123: LDB T4,T1 ;Get byte #5 again
LSH T4,-4 ;Remove low-order nibble
AOJ T2,0 ;Move to next destination word
HRLI T2,000400 ;Byte pointer to low-order nibble (#5)
DPB T4,T2 ;Store high-order nibble (#5)
SOJE T3,L.116 ;Stop if done
HRLI T2,041000 ;Byte pointer to byte #6
ILDB T4,T1 ;Get byte #6
DPB T4,T2 ;Store byte #6
SOJE T3,L.116 ;Stop if done
HRLI T2,141000 ;Byte pointer to byte #7
ILDB T4,T1 ;Get byte #7
DPB T4,T2 ;Store byte #7
SOJE T3,L.116 ;Stop if done
HRLI T2,241000 ;Byte pointer to byte #8
ILDB T4,T1 ;Get byte #8
DPB T4,T2 ;Store byte #8
SOJE T3,L.116 ;Stop if done
HRLI T2,341000 ;Byte pointer to byte #9
ILDB T4,T1 ;Get byte #9
DPB T4,T2 ;Store byte #9
AOJ T2,0 ;Increment destination word
SOJG T3,L.115 ;Continue if more bytes
; Done shuffling bytes, so compute count.
L.116: MOVE T1,@COUNT ;Retrieve count as 8-bit bytes
IMULI T1,^D8 ;... and convert to bits
MOVE T3,@USIZE ;Get user's byte size
SKIPN T3 ;If zero,
MOVEI T3,^D36 ;... use word size
IDIV T1,T3 ;Convert bits to user bytes
MOVEM T1,@COUNT ;Store result
L.117: POP P,T4 ;Restore saved register
RET ;
PRGEND ;End of NFRCV
TITLE NFSND Send data over a logical link
ENTRY NFSND
SEARCH TTTUNV
TTTINI
T20,< EXTERN .JSER>
T10,< EXTERN .CNEVT,.NSPER>
; NFSND (5A)
;
; Send data over a logical link.
;
; Messages sent over a link opened with NFOPA are sent in ASCII, and may
; be read directly as ASCII by the receiving task, even if the receiving
; task is on a heterogeneous system.
;
; Messages sent over links opened with NFOP8 are sent as sequential
; 8-bit bytes read as the local system normally stores such bytes and
; received as the remote system normally stores such bytes. This type of
; message should be used for non-ASCII, non-numeric data such as
; bit masks.
;
; Messages sent over links opened with NFOPB will look the same to the
; receiving task as to the sender if the tasks are on homogeneous
; systems; if the tasks are on heterogeneous systems, either the sending
; task must convert the data before it is sent using the DCR, or the
; receiving task must convert the data it receives (unconverted data
; sent to a heterogeneous system will arrive in a format acceptable
; as input to the DCR). See Appendix H of the Functional Specification
; for details of how the data is actually transported through the
; network.
;
; CALL NFSND USING NETLN, USIZE, COUNT, DATA, MSG-FLG.
; RETCOD = NFSND (NETLN, USIZE, COUNT, DATA, MSGFLG)
;
; NETLN network logical name, set by NFOPA, NFOPB, NFOP8, or NFOPP.
; USIZE Message unit size. Ignored if the active side of the link
; was opened with NFOPA, which will send ASCII data only, or with
; NFOP8, which will send 8-bit bytes only. For links opened with
; NFOPB, this is the message length unit size. Zero may be used to
; indicate words (or VAX longwords (32 bits))
; (on the local system). This parameter is currently
; included only for user convenience and does not affect how data
; is actually transferred over the network.
; COUNT Message length (must be greater than zero). The length is
; given in ASCII characters for links opened with NFOPA, in
; sequential 8-bit bytes for links opened with NFOP8, or in bytes
; of the size specified by the message unit size (or words
; or VAX longwords (32 bit)) for links opened with NFOPB.
; DATA message.
; MSG-FLG message mode flag:
; MSGMSG: data in message mode
; MSGSTM: data in non-message (stream) mode.
; Return code and function value:
; SNWRNG: an argument is of the wrong type
; SNOK..: data sent successfully
; HORROR: JSYS error.
NFSND: SAVAC ;Save the ACs
; Set up parameters:
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.22 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN SNWRNG ;Anything else is trouble
>; End IFN TCK
L.22: XMOVEI T1,@0(ARG) ;[51]NETLN
MOVEM T1,NETLN ;Save it
SKIPL T1,@NETLN ;Get value given. Can not be negative
CAILE T1,MAXLL ;Or greater than MAXLL
RETURN SNWRNG ;Return error
; USIZE (1) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get USIZE's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.55 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN SNWRNG ;Anything else is trouble
>; End IFN TCK
L.55: XMOVEI T1,@1(ARG) ;[51]Address of USIZE
MOVEM T1,USIZE ;Save it
; COUNT (2) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get COUNT's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.23 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN SNWRNG ;Anything else is trouble
>; End IFN TCK
L.23: XMOVEI T1,@2(ARG) ;[51]COUNT address
MOVEM T1,COUNT ;Save it
; DATA (3) setup:
HRLI T1,.TYPE ;Get DATA's type
HRRI T1,3(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified, use FORTRAN
JRST L.25 ;...
CAIN T1,.ST ;COBOL byte string
JRST L.24 ;Do it
JRST L.25 ;Otherwise assume FORTRAN for now
; COBOL code:
L.24: XMOVEI T1,@3(ARG) ;[51]Data pointer address
MOVE T1,0(T1) ;Get byte pointer
JRST .E4 ;...
; End of COBOL code.
; FORTRAN code:
L.25: XMOVEI T1,@3(ARG) ;[51]String address
HLL T1,[POINT 7,0] ;Make a byte pointer
MOVE T2,@NETLN ;Get link index
MOVE T2,CODES(T2) ;Get byte size
CAIE T2,^D7 ;Skip if 7-bit
HLL T1,[POINT 8,0] ;Otherwise, use 8-bit pointer
; End of FORTRAN code.
.E4: MOVEM T1,DATA ;Save it
; MSGFLG (4) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get MSG-FLG's type
HRRI T1,4(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.26 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN SNWRNG ;Anything else is trouble
>; End IFN TCK
L.26: XMOVEI T1,@4(ARG) ;[51]EOM flag address
MOVEM T1,EOM ;Save it
; End of setting up parameters.
; SEND (5)
; Send data over a logical link.
; NETLN: link number
; DATA: data to send
; COUNT: length of data
; EOM: message-mode flag
SEND: MOVE T1,@NETLN ;Slot number
MOVE T2,DATA ;Byte pointer
MOVE T3,CODES(T1) ;Get byte size
CAIN T3,^D36 ;Binary mode?
JRST [CALL UNPACK ;Yes, unpack data
JRST L.120 ] ;Go do it
;**; [63] Remove code at SEND + 5 CLR 11-Mar-83
;[63] HLL T2,LLEVNT(T1) ;Byte pointer
MOVN T3,@COUNT ;Character count
L.120:
T20,< MOVE T1,LLJFN(T1) ;Get the JFN
MOVE T0,@EOM ;Get mode flag
CAIE T0,MSGMSG ;Message mode?
JRST STREAM ;No
>; End of T20
; JRST MSG ;Yes, fall through to do message mode
; MSG (5.2)
; Do message mode.
MSG:
T20,< SOUTR% ;Yes
ERJMP .JSER ;Error?
RETURN SNOK.. ;Return
>; End of T20
; STREAM (5.3)
; Do stream mode.
STREAM:
T20,< SOUT% ;Output it
ERJMP .JSER ;Error?
RETURN SNOK.. ;
>; End of T20
T10,< MOVE T1,@NETLN ;Get channel number
MOVEM T1,BL$NSP+.NSACH ;Save channel number
SKIPE @EOM ;If message mode
SKIPA T1,[NS.WAI!NS.EOM!<XWD .NSFDS,.NSAA2+1>] ;Get function+flags
MOVE T1,[NS.WAI!<XWD .NSFDS,.NSAA2+1>] ; Get function+flags+length
MOVEM T1,BL$NSP+.NSAFN ;Save flags+functions+length
MOVNM T3,BL$NSP+.NSAA1 ;Save byte count
MOVEM T2,BL$NSP+.NSAA2 ;Save byte pointer
MOVEI T1,BL$NSP
NSP. T1, ;Do it
JRST .NSPER ;Check error code
MOVE T1,BL$NSP+.NSACH ;Get Status
CALL .CNEVT ;Update event word
RETURN SNOK.. ;Return
>; End of T10
; UNPACK (5.1) Ugly but necessary
; Unpack 36-bit words into 8-bit bytes to be sent over the network in
; VAX order (backwards). The routine computes how many bytes to send
; based on the user's byte size and count.
; User data:
; +---+-----+-----+-----+-----+ +-----+-----+-----+-----+---+
; | 5L| 4 | 3 | 2 | 1 | | 9 | 8 | 7 | 6 |H5 | ...
; +---+-----+-----+-----+-----+ +-----+-----+-----+-----+---+
; Unpacked data for network transfer:
; +-----+-----+-----+-----+---+ +-----+-----+-----+-----+---+ +-----+---
; | 1 | 2 | 3 | 4 | | | H5L | 6 | 7 | 8 | | | 9 | ...
; +-----+-----+-----+-----+---+ +-----+-----+-----+-----+---+ +-----+---
UNPACK: PUSH P,T1 ;Save temporary registers
PUSH P,T5 ;Save a register for the split byte
PUSH P,T4 ;Save a register for byte loading
SKIPN T3,@USIZE ;Get message unit size in bits
JRST [MOVE T3,@COUNT ;If words, just pick up user count
JRST L.121] ;And use as is
MOVEI T1,^D36 ;Compute bytes per word
IDIV T1,T3 ;... in T1
MOVE T3,@COUNT ;Get count of bytes
IDIV T3,T1 ;... and change to words in T3
SKIPE T4 ;Any leftover bytes?
AOJ T3, ;Yes, one more word
L.121: MOVE T4,T3 ;One half (the number of words
AOJ T4,0 ;... plus one)
LSH T4,-1 ;... of split bytes
LSH T3,2 ;Change words to 8-bit bytes
ADD T3,T4 ;Add in byte fudge factor
;**; [111] Change at L.121 DPR 04-June-84
CAILE T3,TSIZE*4 ;[111] If greater than out buffer
MOVEI T3,TSIZE*4 ;[111] That is the max
PUSH P,T3 ;Save byte count for SOUT/SOUTR
HRR T2,DATA ;Get user data address
MOVE T1,[POINT 8,TEMPST] ;ILDB pointer to temporary area
L.118: HRLI T2,001000 ;Byte pointer to byte #1 source
LDB T4,T2 ;Get byte #1
IDPB T4,T1 ;Store byte #1
SOJE T3,L.119 ;Stop if done
HRLI T2,101000 ;Byte pointer to byte #2
LDB T4,T2 ;Get byte #2
IDPB T4,T1 ;Store byte #2
SOJE T3,L.119 ;Stop if done
HRLI T2,201000 ;Byte pointer to byte #3 source
LDB T4,T2 ;Get byte #3
IDPB T4,T1 ;Store byte #3
SOJE T3,L.119 ;Stop if done
HRLI T2,301000 ;Byte pointer to byte #4 source
LDB T4,T2 ;Get byte #4
IDPB T4,T1 ;Store byte #4
SOJE T3,L.119 ;Stop if done
HRLI T2,400400 ;Byte pointer to low-order nibble (#5)
LDB T4,T2 ;Get low-order nibble (#5)
AOJ T2,0 ;Move to next source word
HRLI T2,000400 ;Byte pointer to high-order nibble (#5)
LDB T5,T2 ;Get high-order nibble (#5) and
LSH T5,4 ;... shift it over and
ADD T4,T5 ;... add nibbles to get byte #5
IDPB T4,T1 ;Store byte #5
SOJE T3,L.119 ;Stop if done
HRLI T2,041000 ;Byte pointer to byte #6 source
LDB T4,T2 ;Get byte #6
IDPB T4,T1 ;Store byte #6
SOJE T3,L.119 ;Stop if done
HRLI T2,141000 ;Byte pointer to byte #7
LDB T4,T2 ;Get byte #7
IDPB T4,T1 ;Store byte #7
SOJE T3,L.119 ;Stop if done
HRLI T2,241000 ;Byte pointer to byte #8
LDB T4,T2 ;Get byte #8
IDPB T4,T1 ;Store byte #8
SOJE T3,L.119 ;Stop if done
HRLI T2,341000 ;Byte pointer to byte #9
LDB T4,T2 ;Get byte #9
IDPB T4,T1 ;Store byte #9
AOJ T2,0 ;Increment source words
SOJG T3,L.118 ;Continue if more bytes
; Done shuffling bytes.
L.119: POP P,T3 ;Get byte count and
MOVN T3,T3 ;... negate it for SOUT/SOUTR
MOVE T2,[POINT 8,TEMPST] ;Set up pointer for SOUT/SOUTR
POP P,T4 ;Restore registers
POP P,T5 ;...
POP P,T1 ;...
RET ;
PRGEND ;End of NFSND
TITLE NFREJ Reject a link connection
ENTRY NFREJ
SEARCH TTTUNV
TTTINI
T20,< EXTERN .JSER,.UPEVT>
T10,< EXTERN .NSPER>
; NFREJ (6A)
;
; Reject a connection on a passive link which got a connect event.
; The link specified will not be availale for use after this routine
; is called, whether or not the call succeeded.
;
; Note: A connection could be implicitly rejected by closing the JFN of
; the logical link before accepting the connection, producing a connect
; reject message with a reject code of 38 (user aborted). In this case,
; you must reopen the network JFN to receive subsequent connect
; initiate messages.
;
; CALL NFREJ USING NETLN, CODE, COUNT, DATA.
; RETCOD = NFREJ (NETLN, CODE, COUNT, DATA)
;
; NETLN network logical name, set by the NFOPP routine.
; CODE abort or reject code. See Appendix F of the
; Functional Specification for a description of abort and
; reject codes.
; COUNT count of optional data characters.
; DATA optional ASCII data.
; Return code and function value:
; RJWRNG: an argument is of the wrong type
; RJOK..: connection rejected successfully
; HORROR: JSYS error.
NFREJ: SAVAC ;Save ACs
; Set up parameters:
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.27 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RJWRNG ;Anything else is trouble
>; End IFN TCK
L.27: XMOVEI T1,@0(ARG) ;[51]Address of NETLN
MOVEM T1,NETLN ;Save it
SKIPL T1,@NETLN ;Get value given. Can not be negative
CAILE T1,MAXLL ;Or greater than MAXLL
RETURN RJWRNG ;Return error
; CODE (1) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get CODE's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.28 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RJWRNG ;Anything else is trouble
>; End IFN TCK
L.28: XMOVEI T1,@1(ARG) ;[51]Address of CODE
MOVEM T1,CODE ;Save it
; COUNT (2) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get COUNT's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.29 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RJWRNG ;Anything else is trouble
>; End IFN TCK
L.29: XMOVEI T1,@2(ARG) ;[51]Address of COUNT
MOVEM T1,COUNT ;Save it
; DATA (3) setup:
HRLI T1,.TYPE ;Get DATA's type
HRRI T1,3(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.31 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.31 ;[7] Otherwise, assume FORTRAN for now
; COBOL code:
XMOVEI T1,@3(ARG) ;[51][7] Address of data descriptor
MOVE T1,0(T1) ;Get byte pointer
LDB T3,[POINT 6,T1,11] ;[7] Get byte pointer
CAIE T3,7 ;[7] Must be ASCII
RETURN RJWRNG ;[7] Wrong type
JRST .E5 ;...
; End of COBOL code.
; FORTRAN code:
L.31: XMOVEI T1,@3(ARG) ;[51]String address
HLL T1,[POINT 7,0] ;Make a byte pointer
; End of FORTRAN code.
.E5: MOVEM T1,DATA ;Save it
; End of setting up parameters.
; REJ (6)
; Reject a link.
; NETLN: link number
; CODE: reject code
; DATA: optional data
; COUNT: length of data
REJ:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MOCLZ ;Reject function
HRL T2,@CODE ;Reject code
MOVE T3,DATA ;Reject message
MOVE T4,@COUNT ;Character count for message
CAILE T4,SOPTDT ;Check size
MOVEI T4,SOPTDT ;Too big, so use maximum
MTOPR% ;
ERJMP .JSER ;Error?
MOVE T1,@NETLN ;
CALL .UPEVT ;Update status
RETURN RJOK.. ;
>; End of T20
T10,< MOVE T1,@NETLN ;Get channel number
HRRZM T1,BL$NSP+.NSACH ;Save in NSP. arg block
MOVE T1,@COUNT ;Get user byte count
MOVEI T2,.NSACH+1 ;Assume short arg type
SKIPN T1 ;Zero bytes?
JRST REJ2 ;Don't send it then
CAILE T1,SOPTDT ;More than the max??
MOVEI T1,SOPTDT ;Make it the max
HRLM T1,BL$OPT+.NSASL ;Save in string desc.
MOVE T2,DATA ;Pointer to user data
MOVE T3,[POINT 8,BL$OPT+.NSAST] ;Pointer to string block
REJ1: ILDB T4,T2 ;Get a char
IDPB T4,T3 ;Store a char
SOJG T1,REJ1 ;Loop
MOVEI T1,BL$OPT ;Update NSP. arg blk.
MOVEM T1,BL$NSP+.NSAA1
MOVEI T2,.NSAA1+1 ;Long block length
REJ2: HRLI T2,.NSFRJ ;Function code (REJECT)
MOVEM T2,BL$NSP+.NSAFN ;Save in NSP. arg blk.
MOVEI T1,BL$NSP
NSP. T1, ;Do it
JRST .NSPER ;Look at error code
RETURN RJOK.. ;
>; End of T10
PRGEND ;End of NFREJ
TITLE NFINT Send an interrupt message
ENTRY NFINT
SEARCH TTTUNV
TTTINI
T20,< EXTERN .JSER>
T10,< EXTERN .NSPER,.CNEVT>
; NFINT (7A)
;
; Send an interrupt message over a logical link.
;
; Unlike NFSND, data is always sent in message mode, so a prompt attempt
; to send data is guaranteed. Data sent in this mode is not sent in sync
; with data sent by NFSND. Only one interrupt can be sent over a logical
; link at one time.
;
; CALL NFINT USING NETLN, COUNT, DATA.
; RETCOD = NFINT (NETLN, COUNT, DATA)
;
; NETLN network logical name, set by NFOPA, NFOPB, NFOP8, or NFOPP.
; COUNT characters of data to send (1 to SINTDT).
; DATA ASCII data.
; Return code and function value:
; IDWRNG: an argument is of the wrong type
; IDOK..: data sent successfully
; HORROR: JSYS error.
NFINT: SAVAC ;Save the ACs
; Set up parameters:
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.32 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN IDWRNG ;Anything else is trouble
>; End IFN TCK
L.32: XMOVEI T1,@0(ARG) ;[51]Address of NETLN
MOVEM T1,NETLN ;Save it
SKIPL T1,@NETLN ;Get value given. Can not be negative
CAILE T1,MAXLL ;Or greater than MAXLL
RETURN IDWRNG ;Return error
; COUNT (1) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get COUNT's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.33 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN IDWRNG ;Anything else is trouble
>; End IFN TCK
L.33: XMOVEI T1,@1(ARG) ;[51]Address of COUNT
MOVEM T1,COUNT ;Save it
; DATA (2) setup:
HRLI T1,.TYPE ;Get DATA's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.35 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.35 ;[7] Otherwise, assume FORTRAN for now
; COBOL code:
XMOVEI T1,@2(ARG) ;[51][7] Address of data descriptor
MOVE T1,0(T1) ;Byte pointer
LDB T3,[POINT 6,T1,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN IDWRNG ;[7] Wrong type
JRST .E6 ;...
; End of COBOL code.
; FORTRAN code:
L.35: XMOVEI T1,@2(ARG) ;[51]String address
HLL T1,[POINT 7,0] ;Make it a byte pointer
; End of FORTRAN code.
.E6: MOVEM T1,DATA ;Save it
; End of setting up parameters.
; SINT (7)
; Send an interrupt message.
; NETLN: link number
; DATA: interrupt data
; COUNT: length of data
SINT:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MOSIM ;Send interrupt message function
MOVE T3,DATA ;Byte pointer
MOVE T4,@COUNT ;Character count for message
CAILE T4,SINTDT ;Check size
MOVEI T4,SINTDT ;Too big, use maximum
MTOPR% ;Send it
ERJMP .JSER ;Error?
RETURN IDOK.. ;
>; End of T20
T10,< MOVE T1,@NETLN ;Get channel number
HRRZM T1,BL$NSP+.NSACH ;Save in NSP. arg block
MOVE T1,@COUNT ;Get user byte count
CAILE T1,SINTDT ;More than the max?
MOVEI T1,SINTDT ;Make it the max
HRLM T1,BL$OPT+.NSASL ;Save in string desc.
JUMPE T1,SINT2 ;No data??
MOVE T2,DATA ;Pointer to user data
MOVE T3,[POINT 8,BL$OPT+.NSAST] ;Pointer to string block
SINT1: ILDB T4,T2 ;Get a char
IDPB T4,T3 ;Store a char
SOJG T1,SINT1 ;Loop
MOVEI T1,BL$OPT ;Update NSP. arg blk.
MOVEM T1,BL$NSP+.NSAA1
SINT2: MOVE T2,[XWD .NSFIS,.NSAA1+1];Block length, function(snd int data)
MOVEM T2,BL$NSP+.NSAFN ;Save in NSP. arg blk.
MOVEI T1,BL$NSP
NSP. T1, ;Do it
JRST .NSPER ;Look at error code
MOVE T1,BL$NSP+.NSACH ;Get status
CALL .CNEVT ;Update event word
RETURN IDOK.. ;
>; End of T10
PRGEND ;End of NFINT
TITLE NFRCI Receive an interrupt message
ENTRY NFRCI
SEARCH TTTUNV
TTTINI
T10,< EXTERN .NSPER,.CNEVT>
; NFRCI (8A)
;
; Receive a single interrupt message over a logical link.
;
; Receipt of an interrupt message is an asynchronous event. The normal
; way to access asynchronous events is through the NFGND interface
; routine. NFGND will announce interrupt messages before data messages;
; such messages must be read before NFGND will announce any lower-level
; events (data messages or disconnections). Note that NFRCV will return
; error code 2 and refuse to return data if an interrupt message is
; available which has not been read by NFRCI.
;
; CALL NFRCI USING NETLN, COUNT, DATA.
; RETCOD = NFRCI (NETLN, COUNT, DATA)
;
; NETLN network logical name, set by NFOPA, NFOPB, NFOP8, or NFOPP.
; COUNT count of characters read.
; DATA ASCII data read (1 to SINTDT characters). This area
; must be at least SINTDT characters long.
; Return code and function value:
; RIWRNG: an argument is of the wrong type
; RIOK..: interrupt message read successfully. COUNT has number
; of characters read
; RINONE: no message available now
; HORROR: JSYS error.
NFRCI: SAVAC ;Save the ACs
; Set up parameters:
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.36 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RIWRNG ;Anything else is trouble
>; End IFN TCK
L.36: XMOVEI T1,@0(ARG) ;[51]Address of NETLN
MOVEM T1,NETLN ;Save it
SKIPL T1,@NETLN ;Get value given. Can not be negative
CAILE T1,MAXLL ;Or greater than MAXLL
RETURN RIWRNG ;Return error
; COUNT (1) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get COUNT's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.37 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN RIWRNG ;Anything else is trouble
>; End IFN TCK
L.37: XMOVEI T1,@1(ARG) ;[51]Address of ARG
MOVEM T1,COUNT ;Save it
; DATA (2) setup:
HRLI T1,.TYPE ;Get DATA's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.39 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.39 ;[7] Otherwise, assume FORTRAN for now
; COBOL code:
XMOVEI T1,@2(ARG) ;[51][7] Address of string descriptor
MOVE T1,0(T1) ;Byte pointer
LDB T3,[POINT 6,T1,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN RIWRNG ;[7] Wrong type
JRST .E7 ;...
; End of COBOL code.
; FORTRAN code:
L.39: XMOVEI T1,@2(ARG) ;[51]String address
HLL T1,[POINT 7,0] ;Make it a byte pointer
; End of FORTRAN code.
.E7: MOVEM T1,DATA ;Save it
; End of setting up parameters.
; RCI (8)
; Receive an interrupt.
; NETLN: link number
; DATA: interrupt data returned
; COUNT: length of data
RCI:
T20,< MOVE T1,@NETLN ;Get slot number
MOVX T2,EV.INT ;
ANDCAM T2,LLEVNT(T1) ;
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MORIM ;MTOPR function
MOVE T3,DATA ;Byte pointer
MTOPR% ;
ERJMP [RETURN RINONE] ;No interrupt message
MOVEM T4,@COUNT ;Return count of bytes in message
MOVE T1,@NETLN ;Get slot number
RETURN RIOK.. ;Return 0
>; End of T20
T10,< MOVE T1,@NETLN ;Get channel number
HRRZM T1,BL$NSP+.NSACH ;Save in NSP. arg block
MOVEI T1,<1+<<SOPTDT+3>/4>> ;Make string header
MOVEM T1,BL$OPT ;Save in block
MOVEI T1,BL$OPT ;Update NSP. arg blk.
MOVEM T1,BL$NSP+.NSAA1
MOVE T2,[XWD .NSFIR,.NSAA1+1] ;Function code (REC INT DATA), length
MOVEM T2,BL$NSP+.NSAFN ;Save in NSP. arg blk.
MOVEI T1,BL$NSP
NSP. T1, ;Do it
JRST .NSPER ;Look at error code
MOVE T1,BL$NSP+.NSACH ;Get status
CALL .CNEVT ;Update event word
HLRZ T1,BL$OPT+.NSASL ;Get string length
MOVEM T1,@COUNT ;Tell user how many bytes
JUMPE T1,[RETURN RINONE] ;No data??
MOVE T2,DATA ;Pointer to user data
MOVE T3,[POINT 8,BL$OPT+.NSAST] ;Pointer to string block
RCI1: ILDB T4,T3 ;Get a char
IDPB T4,T2 ;Store a char
SOJG T1,RCI1 ;Loop
RETURN RIOK.. ;Return okay
>; End of T10
PRGEND ;End of NFRCI
TITLE NFCLS Disconnect or abort a logical link
ENTRY NFCLS
SEARCH TTTUNV
TTTINI
T20,< EXTERN .JSER>
T10,< EXTERN .NSPER>
; NFCLS (9A)
;
; Disconnect or abort the logical link (release its resources for reuse).
;
; A synchronous disconnect acts as a pipeline marker which will disconnect
; the link after all transmissions outstanding have been completed. An
; abort instantaneously disconnects the link from the local end, as far as
; the user is concerned. DECNET specifies an abort code to be passed in
; either case, but this feature is not universally implemented. This routine
; may be called either before or after receipt of a disconnect for the other
; end.
;
; Network event indications are cleared at various times, depending on the
; event. Connect and disconnect (NOT abort) are cleared when reported.
; Abort is never cleared; any further invocations of NFGND for an aborted
; link will always get the "abort" code (until the link is disconnected
; by the user, in which case the NETLN becomes an invalid parameter).
; A data event is cleared only when there is no more data to be gotten at the
; moment. An interrupt event is cleared immediately for all implementations
; that allow only one outstanding interrupt message (all, at present).
; For other implementations, it is treated like a data event.
;
; CALL NFCLS USING NETLN, TYPE, COUNT, DATA.
; RETCOD = NFCLS (NETLN, TYPE, COUNT, DATA)
;
; NETLN network logical name, set by NFOPA, NFOPB, NFOP8, or NFOPP.
; TYPE type of link disconnect requested:
; 0: synchronous disconnect (quiesce before disconnecting)
; nonzero: abort.
; See Appendix F of the Functional Specification for a description
; of abort codes.
; COUNT count of optional data.
; DATA ASCII optional data (1 to SOPTDT ASCII characters).
; Return code and function value:
; CLWRNG: an argument is of the wrong type
; CLOK..: link disconnected
; HORROR: JSYS error.
NFCLS: SAVAC ;Save the ACs
; Set up parameters:
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.40 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN CLWRNG ;Anything else is trouble
>; End IFN TCK
L.40: XMOVEI T1,@0(ARG) ;[51]NETLN address
MOVEM T1,NETLN ;Save it
SKIPL T1,@NETLN ;Get value given. Can not be negative
CAILE T1,MAXLL ;Or greater than MAXLL
RETURN CLWRNG ;Return error
; TYPE (1) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get TYPE's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.41 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN CLWRNG ;Anything else is trouble
>; End IFN TCK
L.41: XMOVEI T1,@1(ARG) ;[51]Abort or disconnect flag
MOVEM T1,TYPE ;Save it
; COUNT (2) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get COUNT's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.43 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN CLWRNG ;Anything else is trouble
>; End IFN TCK
L.43: XMOVEI T1,@2(ARG) ;[51]Byte count address
MOVEM T1,COUNT ;Save it
; DATA (3) setup:
HRLI T1,.TYPE ;Get DATA's type
HRRI T1,3(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.45 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.45 ;[7] Otherwise, assume FORTRAN for now
; COBOL code:
XMOVEI T1,@3(ARG) ;[51][7] DATA descriptor
MOVE T1,0(T1) ;Byte pointer
LDB T3,[POINT 6,T1,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN CLWRNG ;[7] Wrong type
JRST .E8 ;...
; End of COBOL code.
; FORTRAN code:
L.45: XMOVEI T1,@3(ARG) ;[51]String address
HLL T1,[POINT 7,0] ;Make it a byte pointer
; End of FORTRAN code.
.E8: MOVEM T1,DATA ;Save it
; End of setting up parameters.
; CLS (9)
; Close a logical link.
; NETLN: link number
; TYPE: type of close
; COUNT: count of optional data
; DATA: optional data
CLS:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T2,LLSTAT(T1) ;[4] Get status
TXNN T2,MO%CON ;[4] Still connected?
JRST CLOZ ;[4] Only close allowed here
SKIPE @TYPE ;[4] Synchronous disconnect?
JRST DOMTR ;[4] No
SKIPN @COUNT ;[4] Optional data?
JRST CLOZ ;[4] No
>; End of T20
;[4] Reinsert this code. They say CLOSF% is fixed.
;[4]
;[4] This code can be re-inserted when CLOSF% is fixed to properly do a
;[4] synchronous disconnect with no optional data. It currently (5.1
;[4] monitor) does not send a DI unless the MTOPR% is done, so we will
;[4] always do the MTOPR% for now.
; DOMTR
; Do an abort or disconnect with optional data.
; DATA: optional data
; COUNT: length of data
; TYPE: type of disconnect
; CODE: abort code
DOMTR:
T20,< MOVE T1,LLJFN(T1) ;JFN of the link
MOVEI T2,.MOCLZ ;Disconnect code
MOVE T3,DATA ;Byte pointer
MOVE T4,@COUNT ;Character count
CAILE T4,SOPTDT ;Check for too long
MOVEI T4,SOPTDT ;Use maximum instead
HRL T2,@TYPE ;Abort code
MTOPR% ;
ERJMP .JSER ;Error?
>; End of T20
; CLOZ
; Do a synchronous disconnect or abort with no optional data.
; TYPE: type of close
; NETLN: link number
CLOZ:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T1,LLJFN(T1) ;Get the JFN
SKIPE @TYPE ;Abort or synchronous?
TXO T1,CZ%ABT ;Abort
CLOSF% ;Close the logical link
ERJMP .JSER ;Error?
MOVE T2,@NETLN ;Slot number
SETZM LLJFN(T2) ;Zero the JFN
SETZM LLEVNT(T2) ;Zero the event word
SETZM LLSTAT(T2) ; and the status word
RETURN CLOK.. ;
>; End of T20
T10,< MOVE T1,@NETLN ;Get channel number
HRRZM T1,BL$NSP+.NSACH ;Save in NSP. arg block
MOVE T1,@COUNT ;Get user byte count
MOVEI T2,.NSACH+1 ;Assume short arg type
SKIPN T1 ;Zero bytes?
JRST CLS2 ;Don't send it then
CAILE T1,SOPTDT ;More than the max?
MOVEI T1,SOPTDT ;Make it the max
HRLM T1,BL$OPT+.NSASL ;Save in string desc.
MOVE T2,[POINT 7,@DATA] ;Pointer to user data
MOVE T3,[POINT 8,BL$OPT+.NSAST] ;Pointer to string block
CLS1: ILDB T4,T2 ;Get a char
IDPB T4,T3 ;Store a char
SOJG T1,CLS1 ;Loop
MOVEI T1,BL$OPT ;Update NSP. arg blk.
MOVEM T1,BL$NSP+.NSAA1
MOVEI T2,.NSAA1+1 ;Long block length
CLS2: HRLI T2,.NSFSD ;Function code (Synchronous disconnect)
MOVEM T2,BL$NSP+.NSAFN ;Save in NSP. arg blk.
MOVEI T1,BL$NSP
NSP. T1, ;Do it
JFCL ;Probably wrong state
MOVE T1,[XWD .NSFRL,.NSACH+1];Now, release the channel
MOVEM T1,BL$NSP+.NSAFN
MOVEI T1,BL$NSP
NSP. T1, ;Do it
JFCL ;Could be wrong state again, but
; in any case the link is released
CLS3: MOVE T1,@NETLN ;Get line number
SETZM LLSTAT(T1) ;Clear status word
SETZM LLEVNT(T1) ;Clear event word
SOSGE NUMLL ;Decrement active LL count
SETZM NUMLL ;Don't let it go negative
RETURN CLOK.. ;
>; End of T10
PRGEND ;End of NFCLS
TITLE NFINF Get link information
ENTRY NFINF
SEARCH TTTUNV
TTTINI
T20,< EXTERN .JSER>
T10,< EXTERN .NSPER>
; NFINF (10A)
;
; Get information about the other end of the logical link.
;
; CALL NFINF USING NETLN, TYPE, COUNT, AREA.
; RETCOD = NFINF (NETLN, TYPE, COUNT, AREA)
;
; NETLN network logical name, set by NFOPA, NFOPB, NFOP8, or NFOPP.
; TYPE type of information wanted:
; INODE: remote node name
; IOBJ: remote object type (passive only)
; IDESCF: remote object descriptor format (0, 1, 2) (passive only)
; IDESC: remote object descriptor (passive only)
; IUSER: remote process user id (passive only)
; IPASS: remote process password (passive only)
; IACCT: remote process account (passive only)
; IOPT: remote process optional data or disconnection
; or reject optional data
; ISEG: maximum segment size for the link
; Only available if connection has been accepted!
; IABTCD: abort code
; COUNT length of data returned.
; AREA where to put ASCII data. Must be at least 16 characters long.
; Return code and function value:
; INWRNG: an argument is of the wrong type
; INOK..: success
; INNOTA: information not available
; INOUTR: type is out of range
; HORROR: JSYS error.
NFINF: SAVAC ;Save the ACs
; Set up parameters:
; NETLN (0) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get NETLN's type
HRRI T1,0(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.46 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN INWRNG ;Anything else is trouble
>; End IFN TCK
L.46: XMOVEI T1,@0(ARG) ;[51]Address of NETLN
MOVEM T1,NETLN ;Save it
SKIPL T1,@NETLN ;Get value given. Can not be negative
CAILE T1,MAXLL ;Or greater than MAXLL
RETURN INWRNG ;Return error
; TYPE (1) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get TYPE's type
HRRI T1,1(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.47 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN INWRNG ;Anything else is trouble
>; End IFN TCK
L.47: XMOVEI T1,@1(ARG) ;[51]Address of TYPE
MOVEM T1,TYPE ;Save TYPE
; COUNT (2) setup:
IFN TCK,< ;Type-checking code
HRLI T1,.TYPE ;Get COUNT's type
HRRI T1,2(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified is always OK
JRST L.48 ;...
CAIE T1,.I1 ;One-word integer is correct
RETURN INWRNG ;Anything else is touble
>; End IFN TCK
L.48: XMOVEI T1,@2(ARG) ;[51]Address of COUNT
MOVEM T1,COUNT ;Save it
; AREA (3) setup:
HRLI T1,.TYPE ;Get AREA's type
HRRI T1,3(ARG) ;...
LDB T1,T1 ;...
CAIN T1,.OK ;Unspecified, assume FORTRAN
JRST L.50 ;...
CAIE T1,.ST ;[7] COBOL byte string
JRST L.50 ;[7] Otherwise, assume FORTRAN for now
; COBOL code:
XMOVEI T1,@3(ARG) ;[51][7] Address of data descriptor
MOVE T1,0(T1) ;Byte pointer
LDB T3,[POINT 6,T1,11] ;[7] Get byte size
CAIE T3,7 ;[7] Must be ASCII
RETURN INWRNG ;[7] Wrong type
JRST .E9 ;...
; End of COBOL code.
; FORTRAN code:
L.50: XMOVEI T1,@3(ARG) ;[51]String address
HLL T1,[POINT 7,0] ;Make it a byte pointer
; End of FORTRAN code.
.E9: MOVEM T1,DATA ;Save it
; End of setting up parameters.
MOVE T1,@TYPE ;Get information type
CAIL T1,IMIN ;Is requested type
CAILE T1,IMAX ; within range?
RETURN INOUTR ;No, error
JRST INFDSP(T1) ;Go do it.
; INFDSP (10)
; Get link information.
; TYPE: type of information
INFDSP: JRST BADTYP ;(0): No such function
JRST NODNAM ;INODE (1): Return node name
JRST OBJTYP ;IOBJ (2): Return object type
JRST OBJDSF ;IDESCF (3): Object descriptor format
JRST OBJDSC ;IDESC (4): Return object descriptor
JRST USERID ;IUSER (5): Return userid
JRST PASSWD ;IPASS (6): Return password
JRST ACCNT ;IACCT (7): Return account
JRST OPTDAT ;IOPT (8): Return optional data
JRST SEGSIZ ;ISEG (9): Return maximum segment size
JRST ABTCOD ;IABTCD (10): Get abort code
BADTYP: RETURN INOUTR ;Unknown TYPE arg
; ABTCOD (10.10)
; Get the abort code.
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
ABTCOD:
T20,< MOVE T1,@NETLN ;Get slot number
HRRZ T2,LLSTAT(T1) ;Abort or disconnect code
MOVE T1,DATA ;Byte pointer
MOVEI T3,^D10 ;Radix
NOUT% ;
ERJMP .JSER ;Error?
CALL NUMB ;Return string size
RETURN INOK.. ;
>; End of T20
T10,< MOVE T1,@NETLN ;Get channel number
HRRZM T1,BL$NSP+.NSACH ;Save in NSP. arg block
SETZM T1,BL$NSP+.NSAA1 ;We don't want the user data
MOVE T2,[XWD .NSFRD,.NSAA2+1] ;Function code (READ DISC DATA), length
MOVEM T2,BL$NSP+.NSAFN ;Save in NSP. arg blk.
MOVEI T1,BL$NSP
NSP. T1, ;Do it
RETURN INNOTA ;Not available, I guess
MOVE T1,DATA ;Get byte pointer to user area
MOVE T2,BL$NSP+.NSAA2 ;Get code
CALL DECSTR ;Convert radix 10 to string
CALL NUMB ;Tell user count of bytes
RETURN INOK.. ;Return 0
>; End of T10
; NODNAM (10.1)
; Get the remote node name.
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
NODNAM:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MORHN ;
MOVE T3,DATA ;
MTOPR% ;
ERJMP .JSER ;Error?
MOVE T1,T3 ;Updated byte pointer
CALL NUMB ;Count bytes
RETURN INOK.. ;Return node name
>; End of T20
T10,< MOVE T4,@NETLN ;Get channel number
SKIPN LLSTAT(T4)
RETURN INNOTA ;Not assigned
SUBI T4,1 ;Channel numbers start at 1
IMULI T4,BL$ILN ;Multiply by INFO block size
SKIPN BL$INF+BL$IND(T4) ;Do we have it?
RETURN INNOTA ;Nope
MOVE T1,DATA ;Pointer to user data area
MOVE T2,[POINT 7,BL$INF+BL$IND(T4)] ; Pointer to INFO area
NODNM1: ILDB T3,T2 ;Get a byte
JUMPE T3,NODNM2 ;End of string?
IDPB T3,T1 ;No, save it
JRST NODNM1 ;Loop
NODNM2: CALL NUMB ;Count bytes for user
RETURN INOK.. ;All done
>; End of T10
; OBJTYP (10.2)
; Get the remote object type.
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
OBJTYP:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T2,LLSTAT(T1) ;Get logical link status
TXNN T2,MO%SRV ;A server?
RETURN INNOTA ;No, no data to return
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MORCN ;
MTOPR% ;
ERJMP .JSER ;Error?
MOVE T1,DATA ;
MOVE T2,T3 ;Object type
MOVEI T3,^D10 ;Base 10
NOUT% ;Return it
JRST .JSER ;Error?
CALL NUMB ;String size
RETURN INOK.. ;
>; End of T20
T10,< MOVE T4,@NETLN ;Get channel number
SKIPN LLSTAT(T4)
RETURN INNOTA ;Not assigned
SUBI T4,1 ;Channel numbers start at 1
IMULI T4,BL$ILN ;Multiply by INFO block size
HLRZ T2,BL$INF+BL$IOB(T4) ;Get INFO
SKIPN T2 ;Do we have it?
RETURN INNOTA ;Nope
TRZ T2,400000 ;Clear "valid" flag
MOVE T1,DATA ;Byte pointer to user area
CALL DECSTR ;Convert radix 10 to string
CALL NUMB ;Tell user count of bytes
RETURN INOK.. ;Return node name
>; End of T10
; USERID (10.5)
; Get the remote process userid.
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
USERID:
T20,< MOVE T1,@NETLN ;Slot number
MOVE T2,LLSTAT(T1) ;Logical link status
TXNN T2,MO%SRV ;A server?
RETURN INNOTA ;No
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MORUS ;
MOVE T3,DATA ;
MTOPR% ;
ERJMP .JSER ;Error?
MOVE T1,T3 ;Updated byte pointer
CALL NUMB ;String length
RETURN INOK.. ;
>; End of T20
T10,< MOVE T4,@NETLN ;Get channel number
SKIPN LLSTAT(T4)
RETURN INNOTA ;Not assigned
SUBI T4,1 ;Channel numbers start at 1
IMULI T4,BL$ILN ;Multiply by INFO block size
SKIPN BL$INF+BL$IUS(T4) ;Do we have it?
RETURN INNOTA ;Nope
MOVE T1,DATA ;Pointer to user data area
MOVE T2,[POINT 7,BL$INF+BL$IUS(T4)] ; Pointer to INFO area
USRID1: ILDB T3,T2 ;Get a byte
JUMPE T3,USRID2 ;End of string?
IDPB T3,T1 ;No, save it
JRST USRID1 ;Loop
USRID2: CALL NUMB ;Count bytes for user
RETURN INOK.. ;All done
>; End of T10
; OBJDSF (10.3)
; Get the remote object descriptor format:
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
OBJDSF:
T20,< MOVEI T1,1 ;String length
MOVEM T1,@COUNT ;Return it
MOVE T1,@NETLN ;Get slot number
MOVE T2,LLSTAT(T1) ;Get logical link status
TXNN T2,MO%SRV ;Server?
RETURN INNOTA ;
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MOROD ;Function
MOVE T3,[POINT 7,TEMPST]
MTOPR% ;
ERJMP .JSER ;Error?
MOVE T1,DATA ;
MOVEI T2,"0" ;
CAMN T3,[POINT 7,TEMPST] ;
JRST [BOUT% ;
RETURN INOK..] ;
JUMPE T4,[ADDI T2,1 ;User and group numbers? No
BOUT% ;
RETURN INOK..] ;
ADDI T2,2 ;Yes
BOUT% ;
RETURN INOK.. ;
>; End of T20
T10,< MOVE T4,@NETLN ;Get channel number
SKIPN LLSTAT(T4)
RETURN INNOTA ;Not assigned
SUBI T4,1 ;Channel numbers start at 1
IMULI T4,BL$ILN ;Multiply by INFO block size
HRRZ T2,BL$INF+BL$IFM(T4) ;Get INFO
SKIPN T2 ;Do we have it
RETURN INNOTA ;Nope
TRZ T2,400000 ;Clear "valid" flag
MOVE T1,DATA ;Byte pointer to user area
CALL DECSTR ;Convert radix 10 to string
CALL NUMB ;Tell user count of bytes
RETURN INOK.. ;Return node name
>; End of T10
; OBJDSC (10.4)
; Get the remote object description.
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
OBJDSC:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T2,LLSTAT(T1) ;Get logical link status
TXNN T2,MO%SRV ;Server?
RETURN INNOTA ;No
MOVE T1,LLJFN(T1) ;Get JFN
MOVEI T2,.MOROD ;Object descriptor function
MOVE T3,[POINT 7,TEMPST] ;
MTOPR% ;
ERJMP .JSER ;Error?
JUMPE T4,[HRROI T1,TEMPST ;Group and user codes?
MOVE T2,DATA ;From temp string to user's buffer
SETZ T3, ;ASCIZ string
SIN% ;
MOVE T1,T2 ;Updated pointer
CALL NUMB ;String length
RETURN INOK..] ;
MOVE T1,DATA ;User's buffer
HLRZ T2,T4 ;Group
MOVEI T3,^D8 ;Octal
NOUT% ;
ERJMP .JSER ;Error?
MOVEI T2,"," ;Comma
BOUT% ;
HRRZ T2,T4 ;User
NOUT% ;
ERJMP .JSER ;Error?
MOVEI T2,"," ;
BOUT% ;
HRROI T2,TEMPST ;
SETZ T3, ;
SOUT% ;
CALL NUMB ;String length
RETURN INOK.. ;
>; End of T20
T10,< MOVE T4,@NETLN ;Get channel number
SKIPN LLSTAT(T4)
RETURN INNOTA ;Not assigned
SUBI T4,1 ;Channel numbers start at 1
IMULI T4,BL$ILN ;Multiply by INFO block size
HRRZ T2,BL$INF+BL$IFM(T4) ;Get Format type
SKIPN T2 ;Do we have it?
RETURN INNOTA ;Nope
MOVE T1,DATA ;Byte pointer to user area
TRZ T2,400000 ;Clear "valid" flag
CAIGE T2,2 ;Format type 0 or 1?
JRST OBJD4 ;Then only a string
HLRZ T2,BL$INF+BL$IPP(T4) ;Get group (project) number
CALL OCTSTR ;Turn it into a string
MOVEI T2,"," ;Separate with comma
IDPB T2,T1
HRRZ T2,BL$INF+BL$IPP(T4) ;Get user (programmer) number
CALL OCTSTR ;Turn it into a string
MOVEI T2,"," ;Separate with comma
IDPB T2,T1
OBJD4: MOVE T2,[POINT 7,BL$INF+BL$ITK(T4)] ; Pointer to INFO area
OBJD1: ILDB T3,T2 ;Get a byte
JUMPE T3,OBJD2 ;End of string?
IDPB T3,T1 ;No, save it
JRST OBJD1 ;Loop
OBJD2: CALL NUMB ;Count bytes for user
RETURN INOK.. ;All done
>; End of T10
; PASSWD (10.6)
; Get the remote process password:
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
PASSWD:
T20,<
MOVE T1,@NETLN ;Get slot number
MOVE T2,LLSTAT(T1) ;Get link status
TXNN T2,MO%SRV ;Server only
RETURN INNOTA ;
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MORPW ;Password function
MOVE T3,DATA ;
MTOPR% ;
ERJMP .JSER ;Error?
MOVE T1,T3 ;Updated pointer
CALL NUMB ;
RETURN INOK.. ;
>; End of T20
T10,< MOVE T4,@NETLN ;Get channel number
SKIPN LLSTAT(T4)
RETURN INNOTA ;Not assigned
SUBI T4,1 ;Channel numbers start at 1
IMULI T4,BL$ILN ;Multiply by INFO block size
SKIPN BL$INF+BL$IPS(T4) ;Do we have it?
RETURN INNOTA ;Nope
MOVE T1,DATA ;Pointer to user data area
MOVE T2,[POINT 7,BL$INF+BL$IPS(T4)] ; Pointer to INFO area
PASSW1: ILDB T3,T2 ;Get a byte
JUMPE T3,PASSW2 ;End of string?
IDPB T3,T1 ;No, save it
JRST PASSW1 ;Loop
PASSW2: CALL NUMB ;Count bytes for user
RETURN INOK.. ;All done
>; End of T10
; ACCNT (10.7)
; Get the remote process account.
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
ACCNT:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T2,LLSTAT(T1) ;Get logical link status
TXNN T2,MO%SRV ;Server?
RETURN INNOTA ;No
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MORAC ;Account string function
MOVE T3,DATA ;
MTOPR% ;
ERJMP .JSER ;Error?
MOVE T1,T3 ;Updated pointer
CALL NUMB ;String length
RETURN INOK.. ;
>; End of T20
T10,< MOVE T4,@NETLN ;Get channel number
SKIPN LLSTAT(T4)
RETURN INNOTA ;Not assigned
SUBI T4,1 ;Channel numbers start at 1
IMULI T4,BL$ILN ;Multiply by INFO block size
SKIPN BL$INF+BL$IAC(T4) ;Do we have it?
RETURN INNOTA ;Nope
MOVE T1,DATA ;Pointer to user data area
MOVE T2,[POINT 7,BL$INF+BL$IAC(T4)] ; Pointer to INFO area
ACCT1: ILDB T3,T2 ;Get a byte
JUMPE T3,ACCT2 ;End of string?
IDPB T3,T1 ;No, save it
JRST ACCT1 ;Loop
ACCT2: CALL NUMB ;Count bytes for user
RETURN INOK.. ;All done
>; End of T10
; OPTDAT (10.8)
; Get the remote process optional data.
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
OPTDAT:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MORDA ;Optional data function
MOVE T3,DATA ;Byte pointer
MTOPR% ;
ERJMP .JSER ;Error?
MOVE T1,T3 ;Updated pointer
CALL NUMB ;String length
RETURN INOK.. ;
>; End of T20
T10,< MOVE T4,@NETLN ;Get channel number
SKIPN LLSTAT(T4)
RETURN INNOTA ;Not assigned
SUBI T4,1 ;Channel numbers start at 1
IMULI T4,BL$ILN ;Multiply by INFO block size
SKIPN BL$INF+BL$IOP(T4) ;Do we have it?
RETURN INNOTA ;Nope
MOVE T1,DATA ;Pointer to user data area
MOVE T2,[POINT 7,BL$INF+BL$IOP(T4)] ; Pointer to INFO area
OPTD1: ILDB T3,T2 ;Get a byte
JUMPE T3,OPTD2 ;End of string?
IDPB T3,T1 ;No, save it
JRST OPTD1 ;Loop
OPTD2: CALL NUMB ;Count bytes for user
RETURN INOK.. ;All done
>; End of T10
; SEGSIZ (10.9)
; Get the maximum segment size.
; NETLN: link number
; DATA: returned data
; COUNT: length of returned data
SEGSIZ:
T20,< MOVE T1,@NETLN ;Get slot number
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MORSS ;Segment size function
MTOPR% ;Do the function
ERJMP .JSER ;Error?
MOVE T2,T3 ;Size
MOVEI T3,^D10 ;Radix ten
MOVE T1,DATA ;Byte pointer
NOUT% ;...
ERJMP .JSER ;Error?
CALL NUMB ;Return string size
RETURN INOK.. ;
>; End of T20
T10,< MOVE T1,[XWD .NSFRS,.NSAA1+1] ;Function (READ STS), length
MOVEM T1,BL$NSP+.NSAFN
MOVE T1,@NETLN ;Get channel number
MOVEM T1,BL$NSP+.NSACH
MOVEI T1,BL$NSP
NSP. T1, ;Do it
RETURN INNOTA ;Not available
MOVE T1,DATA ;Get pointer to user area
MOVE T2,BL$NSP+.NSAA1 ;Get segment size
CALL DECSTR ;Give decimal string to user
CALL NUMB ;Tell him/her how many bytes
RETURN INOK..
>; End of T10
; NUMB
; Count bytes in a string.
; T1: byte pointer to end of string
; DATA: start of string
; COUNT: length of string
NUMB: HRRZ T2,T1 ;Updated word
HRRZ T3,DATA ;Original word
SUB T2,T3 ;Number of words
IMULI T2,^D5 ;Number of characters
LSH T1,-^D30 ;Get P
MOVEI T3,^D36 ;Bits in a word
SUB T3,T1 ;Bits
IDIVI T3,^D7 ;Bytes
ADD T2,T3 ;Total bytes
MOVEM T2,@COUNT ;Return it
RET ;
T10,<
DECSTR: SKIPA T4,[EXP ^D10]
OCTSTR: MOVEI T4,^D8
NUMSTR: JUMPGE T2,NUMST1
MOVEI T3,"-"
IDPB T3,T1
MOVMS T2
NUMST1: IDIVI T2,(T4)
ADDI T3,"0"
PUSH P,T3
SKIPE T2
PUSHJ P,NUMST1
POP P,T3
IDPB T3,T1
POPJ P,
>; End of T10
PRGEND ;End of NFINF
TITLE .UPEVT Update the event flags
SEARCH TTTUNV
TTTINI
ENTRY .UPEVT
T10,< ENTRY .CNEVT,.GTINF
EXTERN .NSPER,.NSPIN>
; .UPEVT (2.3)
;
; Update the event flags.
;
; Called explicitly and whenever an interrupt occurs.
;
; T1 must contain the slot number of the logical link
; or -1 to indicate update of all links.
.UPEVT: JUMPGE T1,[CALL ONELL ;If one link, update the single link
RET ] ;... and return
MOVE T4,[-MAXLL,,0] ;Make AOBJN pointer
; Do all links:
UPLP: HRRZ T1,T4 ;Get logical link number
T20,< SKIPN LLJFN(T1)> ;Link in use?
T10,< SKIPN LLSTAT(T1)> ;Channel assigned?
JRST UPLPE ;No
PUSH P,T4 ;Save T4
CALL ONELL ;Yes
POP P,T4 ;Restore T4
UPLPE: AOBJN T4,UPLP ;Do all links
RET ;
; Do one link:
ONELL:
T20,< PUSH P,T1 ;Save the slot number
MOVE T1,LLJFN(T1) ;Get the JFN
MOVEI T2,.MORLS ;Get link status
MTOPR% ;Get it
ERCAL [SETZ T3, ;Zero status on error
RET ] ;Go on
POP P,T1 ;Get slot number
MOVE T2,LLSTAT(T1) ;Get old status
MOVE T4,LLEVNT(T1) ;Get event word
TXNE T3,MO%SRV ;Passive task?
JRST PASS ;Yes, do it now
TXNE T3,MO%CON ;Now connected?
JRST [TXNN T2,MO%CON ;Not connected before?
TXO T4,EV.CON ;Connect event
JRST .+1 ] ;
JRST COMM ;Common checks
PASS: TXNE T2,MO%WFC ;Were waiting for connect?
JRST [TXNN T3,MO%WFC ;Yes, connect event
TXO T4,EV.CON ;Yes, connect event
JRST .+1 ] ;
COMM: TXNE T3,MO%ABT ;Abort?
JRST [TXNN T2,MO%ABT ;Abort before?
TXO T4,EV.ABT ;Abort event
JRST .+1 ] ;
TXNE T3,MO%INT ;Interrupt message available?
JRST [TXNN T2,MO%INT ;
TXO T4,EV.INT ;Interrupt message event
JRST .+1 ] ;
TXNE T3,MO%SYN ;Disconnect?
JRST [TXNN T2,MO%SYN ;
TXO T4,EV.DIS ;Disconnect event
JRST .+1 ] ;
MOVEM T3,LLSTAT(T1) ;Save new link status
PUSH P,T1 ;Save slot number
MOVE T1,LLJFN(T1) ;Get JFN
SIBE% ;Any data?
JRST [TXO T4,EV.DAT ;Data event
JRST GOTDAT ] ;
TXZ T4,EV.DAT ;No data
GOTDAT: POP P,T1 ;Restore T1
MOVEM T4,LLEVNT(T1) ;Save event word
RET ;
>; End of T20
T10,< MOVE T2,[XWD .NSFRS,.NSACH+1] ;Function (READ STS), length
MOVEM T2,BL$NSP+.NSAFN
MOVEM T1,BL$NSP+.NSACH
MOVEI T2,BL$NSP
NSP. T2, ;Do it
JRST .NSPER ;Check error code
SKIPA T2,BL$NSP+.NSACH ;Get channel status
.CNEVT: MOVE T2,T1 ;External entry with T1=STATUS
;Get status into T2 as well
MOVE T3,LLSTAT(T1) ;Get old Status
MOVE T4,LLEVNT(T1) ;Get current event word
TXZ T4,EV.DAT ;Assume no data available
TXNE T2,NS.NDA ;Data now available?
TXO T4,EV.DAT ;Mark it
TXZ T4,EV.INT ;Assume no interrupt data
TXNE T2,NS.IDA ;Int data now available?
TXO T4,EV.INT ;Mark it
MOVEM T2,LLSTAT(T1) ;Save new Status
LDB T2,[POINTR T2,NS.STA] ;Get new status code
LDB T3,[POINTR T3,NS.STA] ;Get old status code
CAIN T2,.NSSCM ;[110] if no communications
JRST [TXO T4, EV.ABT ;[110] tell user link is aborted
JRST ONELL5] ;[110]
CAIE T2,.NSSCR ;Now connect received?
CAIN T2,.NSSRN ;Or running?
CAIA ;Then link is connected
JRST ONELL1 ;Not connected, on to next test
CAIE T3,.NSSCW ;Old status connect wait?
CAIN T3,.NSSCS ;or connect sent?
JRST [TXO T4,EV.CON ;Then we have a connect event!!!
JRST ONELL5] ;That's all we need to know
ONELL1: CAIE T2,.NSSDR ;New status disconnect received?
CAIN T2,.NSSDC ;Or disconnect confirmed?
CAIA ;Then link is disconnected
JRST ONELL2 ;Not disconnected, on to next test
CAIE T3,.NSSRN ;Old status running?
CAIN T3,.NSSDS ;Or disconnect sent?
JRST [TXO T4,EV.DIS ;Then we have a disconnect event!!!
JRST ONELL5] ;That's all we need to know
ONELL2: CAIE T2,.NSSRJ ;Did we get a reject?
JRST ONELL3 ;No, continue on
CAIE T3,.NSSRN ;Was old state running?
CAIN T3,.NSSCS ;Or connect sent?
JRST [TXO T4,EV.DIS ;Let's call that a disconnect
JRST ONELL5] ;That's all we need to know
ONELL3: CAIE T2,.NSSRN ;Now, if not running
CAIE T3,.NSSRN ;And old status was running
CAIA ;Now running, all okay
TXO T4,EV.ABT ;The link must have been aborted
ONELL5: MOVEM T4,LLEVNT(T1) ;Store new event word
RET
; Routine .GTINF
;
; Called when a link goes into connect state. This routine will read
; the connect block for the link and save away the data that may be
; needed by the NFINF sub-functions. This is necessary since DECnet-10
; will only save the info until the first read/write from/to the link
; or the first call to NSP. to read connect data.
;
; Arguments: T1 contains the channel number
;
; Preserves all AC's
;
.GTINF: PUSH P,T1 ;Save some AC's
PUSH P,T2
PUSH P,T3
PUSH P,T4
MOVEM T1,BL$NSP+.NSACH ;Save the channel number in NSP. blk
MOVEI T4,BL$ILN ;Length of an INFO block
IMULI T4,-1(T1) ;Index for this channel
ADDI T4,BL$INF ;Plus origin of the table
MOVE T1,[XWD .NSFRI,.NSAA1+1] ;NSP. function,,length
MOVEM T1,BL$NSP+.NSAFN
CALL .NSPIN ;Initialize the connect block
MOVEI T1,BL$CON ;Pointer to connect block
MOVEM T1,BL$NSP+.NSAA1 ;Save for NSP.
MOVEI T1,BL$NSP
NSP. T1, ;Get the info
JRST GTINF9 ;This is not good!
HLRZ T1,BL$NOD+.NSASL ;Get byte count
MOVE T2,[POINT 8,BL$NOD+.NSAST] ;And pointer to node name
MOVE T3,[POINT 7,BL$IND(T4)] ;Plus pointer for INFO block
GTINF1: ILDB T0,T2 ;Get a byte
IDPB T0,T3 ;Save it
SOJG T1,GTINF1 ;Loop
SETZ T0, ;Get a zero byte
IDPB T0,T3 ;Make it ASCIZ
HLRZ T1,BL$USR+.NSASL ;Get byte count
MOVE T2,[POINT 8,BL$USR+.NSAST] ;And pointer to user ID
MOVE T3,[POINT 7,BL$IUS(T4)] ;Plus pointer for INFO block
GTINF2: ILDB T0,T2 ;Get a byte
IDPB T0,T3 ;Save it
SOJG T1,GTINF2 ;Loop
SETZ T0, ;Get a zero byte
IDPB T0,T3 ;Make it ASCIZ
HLRZ T1,BL$PAS+.NSASL ;Get byte count
MOVE T2,[POINT 8,BL$PAS+.NSAST] ;And pointer to password
MOVE T3,[POINT 7,BL$IPS(T4)] ;Plus pointer for INFO block
GTINF3: ILDB T0,T2 ;Get a byte
IDPB T0,T3 ;Save it
SOJG T1,GTINF3 ;Loop
SETZ T0, ;Get a zero byte
IDPB T0,T3 ;Make it ASCIZ
HLRZ T1,BL$ACC+.NSASL ;Get byte count
MOVE T2,[POINT 8,BL$ACC+.NSAST] ;And pointer to account
MOVE T3,[POINT 7,BL$IAC(T4)] ;Plus pointer for INFO block
GTINF4: ILDB T0,T2 ;Get a byte
IDPB T0,T3 ;Save it
SOJG T1,GTINF4 ;Loop
SETZ T0, ;Get a zero byte
IDPB T0,T3 ;Make it ASCIZ
HLRZ T1,BL$OPT+.NSASL ;Get byte count
MOVE T2,[POINT 8,BL$OPT+.NSAST] ;And pointer to optional user data
MOVE T3,[POINT 7,BL$IOP(T4)] ;Plus pointer for INFO block
GTINF5: ILDB T0,T2 ;Get a byte
IDPB T0,T3 ;Save it
SOJG T1,GTINF5 ;Loop
SETZ T0, ;Get a zero byte
IDPB T0,T3 ;Make it ASCIZ
HLRZ T1,BL$SPT+.NSASL ;Get byte count
MOVE T2,[POINT 8,BL$SPT+.NSAST] ;And pointer to task name
MOVE T3,[POINT 7,BL$ITK(T4)] ;Plus pointer for INFO block
GTINF6: ILDB T0,T2 ;Get a byte
IDPB T0,T3 ;Save it
SOJG T1,GTINF6 ;Loop
SETZ T0, ;Get a zero byte
IDPB T0,T3 ;Make it ASCIZ
MOVE T1,BL$SPD+.NSDPP ;Get PPN
MOVEM T1,BL$IPP(T4) ;Save in block
MOVE T1,BL$SPD+.NSDFM ;Get format type
TRO T1,400000 ;Set "valid" flag
HRRM T1,BL$IFM(T4) ;Save in block
MOVE T1,BL$SPD+.NSDOB ;Get object type
TRO T1,400000 ;Set "valid" flag
HRLM T1,BL$IOB(T4) ;Save in block
GTINF9: POP P,T4 ;Restore the AC's
POP P,T3
POP P,T2
POP P,T1
RET ;Return
>; End of T10
PRGEND ;End of .UPEVT
SEARCH TTTUNV
T20,< TITLE .JSER Handle JSYS errors
ENTRY .JSER>
T10,< TITLE .NSPER Handle NSP. UUO errors
ENTRY .NSPER>
TTTINI
; .JSER
;
; Code to execute when a JSYS fails.
; T1 will contain the error code.
.JSER:
T20,< CAIGE T1,600000 ;Real error code?
JRST [MOVEI T1,.FHSLF ;For this process
GETER% ;Get most recent error
HRRZ T1,T2 ;
CAIGE T1,600000 ;Real code?
SETZ T1, ;
JRST .+1 ] ;
PUSH P,T1 ;Save real JSYS error code
MOVEI T1,.PRIOU ;[46] To the user terminal
HRROI T2,[ASCIZ /?JSYS error: /] ;[47][46] Give a nice prefix
SETZB T3,T4 ;[46] ...
;**; [64] In .JSER, remove SOUT's CLR 15-Mar-84
;[64] SOUT% ;[46] Show the user
MOVEI T1,.PRIOU ;Primary output
HRLI T2,.FHSLF ;Self
HLLO T2,T2 ;Most recent error
SETZ T3, ;All bytes
;**; [64] In .JSER, remove ERSTR DPR 17-Apr-84
;[64] ERSTR ;Get error message
JFCL
JFCL
MOVEI T1,.PRIOU ;Add
HRROI T2,[ASCIZ /
/] ;... a <CR><LF>
SETZB T3,T4 ;... to
;**; [64] In .JSER, remove SOUT's CLR 15-Mar-84
;[64] SOUT ;... the error message.
POP P,T4 ;Get JSYS error code
CAIN T4,DCNX1 ;Invalid network filename
RETURN INVARG ;...
CAIN T4,DCNX5 ;No more logical links available
RETURN TOOMNY ;...
CAIN T4,DCNX3 ;Invalid object
RETURN INVARG ;...
CAIN T4,DCNX4 ;Invalid task name
RETURN INVARG ;...
CAIN T4,DCNX9 ;Object is already defined
RETURN INVARG ;...
CAIN T4,DCNX11 ;Link aborted
RETURN ABRTRJ ;...
CAIN T4,DCNX12 ;String execeeds 16 bytes
RETURN INVARG ;...
CAIN T4,DCNX2 ;Interrupt message must be read first
RETURN INTRCV ;...
CAIN T4,DCNX14 ;Previous interrupt message outstanding
RETURN INTRCV ;...
CAIN T4,DCNX15 ;No interrupt message available
RETURN NODATA ;...
RETURN HORROR ;Return horrible otherwise
>; End of T20
; .NSPER Called on NSP. error return
;
; T1 = error code returned by NSP.
;
T10,<
.NSPER: CAIN T1,NSALF% ;Resource allocation failure
RETURN TOOMNY
CAIN T1,NSNCD% ;No connect data to read
RETURN NODATA
CAIE T1,NSWRS% ;Function called in wrong state
CAIN T1,NSUKN% ;Unknown node name
RETURN INVARG
CAIN T1,NSUXS% ;Unexpected state
RETURN INVARG
CAIGE T1,NSUNR% ;One of the other "unexpected states"?
CAIG T1,NSUDS%
CAIA ;No
RETURN INVARG
CAIGE T1,NSREJ% ;One of the reject codes?
CAIG T1,NSRBO%
CAIA ;No
RETURN ABRTRJ
SKIPG T2,@NETLN ;Get channel number
RETURN HORROR ;Bad channel number
LDB T2,[POINTR LLSTAT(T2),NS.STA] ;Get current state code
CAIE T2,.NSSRJ ;Reject state?
CAIN T2,.NSSDR ;Disconnect received state?
RETURN ABRTRJ
CAIE T2,.NSSNR ;No resources state?
CAIN T2,.NSSCF ;No confidence state?
RETURN ABRTRJ
CAIE T2,.NSSLK ;No link state?
CAIN T2,.NSSCM ;No communication state?
RETURN ABRTRJ
RETURN HORROR ;Not much else to check
>; End of T10
PRGEND ;End of .JSER
TITLE TTTLOW Impure data for TTT
SEARCH TTTUNV
T10,< SEARCH UUOSYM>
ENTRY TTTLOW
DEFINE X,(A,B),<
A: BLOCK B
>
DEFINE Y (SYM,SIZ),< ;;Macro to generate offsets in BL$INF
SYM==II
II==II+SIZ
> ;;End of Y macro
II==0
TTTLOW: LOWSEG
END ;End of TTTLOW