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decuslib20-02
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decus/20-0027/common.mac
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00100 TITLE COMMON SUBROUTINES VERSION #2 SEPT. 1 '69
00200 SUBTTL DON WITCRAFT 3-11-66
00300
00400
00500
00600
00700 ENTRY EFLG3,EFLG4,EFLG5,EFLG6,EFLG7,SREAD,SWRITE
00800
00900 ;SIMULATOR READ
01000 ;CALL MOVEI FDB,ADDRESS OF FILE DATA BLOCK
01100 ; PUSHJ PDP,SREAD
01200 ; EOF RETURN, FILE HAS BEEN CLOSED
01300 ; NORMAL RETURN
01400
01500 ;IF SIMULATOR ERRORS ARE ENCOUNTERED, GOES TO ERROR.
01600 ;DOES NOT CHECK FOR IODERR.
01700 ;IF IMAGE MODE FROM DTA,MTA OR DSK, AFTER FILLING BUFFER
01800 ;CONVERTS BYTE POINTER TO 8 BIT BYTES AND MULTIPLIES ITEM
01900 ;COUNT BY 4.
02000
02100 EXTERNAL ERROR
02200
02300 SREAD: PUSH PDP,AC3 ;SAVE AC3
02400 JSP SRR,FIN ;EXECUTE READ IN FILEIO
02500 MOVE AC3,CFSTAT(FDB)
02600 TRNE AC3,-1 ;FILE ERROR?
02700 PUSHJ PDP,ERROR ;YES
02800 EFLG3: MOVE AC3,CDSTAT(FDB)
02900 TRNE AC3,ERRORS-IODERR ;SIMULATOR ERROR?
03000 PUSHJ PDP,ERROR ;YES
03100 EFLG4: TRNN AC3,IODEND ;NO. EOF?
03200 JRST SREAD1 ;NO.
03300 JSP SRR,FCLOSE ;YES
03400 MOVE AC3,CDSTAT(FDB)
03500 TRNE AC3,ERRORS-IODERR
03600 PUSHJ PDP,ERROR
03700 EFLG5: SOS -1(PDP) ;CONVERT SKIP RETURN TO NORMAL
03800 SREAD1: POP PDP,AC3 ;RESTORE AC3
03900 AOS (PDP) ;SKIP
04000 POPJ PDP, ;RETURN
04100 ;SIMULATOR WRITE
04200 ;CALL MOVEI FDB,ADDRESS OF FILE DATA BLOCK
04300 ; PUSHJ PDP,SWRITE
04400 ; RETURN
04500
04600
04700 SWRITE: JSP SRR,FOUT
04800 PUSH PDP,AC3
04900 MOVE AC3,CFSTAT(FDB)
05000 TRZN AC3,IOIDM ;ILLEGAL MODE?
05100 JRST SWRIT1
05200 MOVEI AC3,AL ;MAKE IT ASCII
05300 HRRM AC3,CINI(FDB)
05400 POP PDP,AC3
05500 JSP SRR,FCLOSE
05600 JRST SWRITE
05700 SWRIT1: TRNE AC3,-1
05800 PUSHJ PDP,ERROR
05900 EFLG6: MOVE AC3,CDSTAT(FDB)
06000 TRNE AC3,ERRORS-IODERR
06100 PUSHJ PDP,ERROR
06200 EFLG7: POP PDP,AC3
06300 POPJ PDP,
06400
00100
00200
00300 ;CALL: MOVEI 16,ADDRESS OF FILE DATA BLOCK
00400 ; JSP 17,FIN OR FOUT OR FCLOSE
00500 ; RETURN
00600
00700
00800 ;THE IO CHANNELS JOBJDA THRU JOBJDA+20 ARE UNIDIRECTIONAL
00900 ;FILE TRANSMISSION CHANNELS.
01000
01100
01200
01300
01400
01500
01600
01700
01800
01900 ENTRY FIN,FOUT
02000
02100 ;ACCUMULATORS
02200
02300 FAC1=12
02400 FAC2=13
02500 FAC3=14
02600 FAC4=15
02700 FP=FDB
00100 FOUT: JSR FSAVE ;LOAD FILE DATA BLOCK IN 0-11
00200 TLO CFSTAT,FOUTB ;SET OUTPUT CALLED
00300 JRST FIOC1
00400
00500 FIN: JSR FSAVE ;LOAD FILE DATA BLOCK IN 0-11
00600 TLZ CFSTAT,FOUTB ;SET INPUT CALLED
00700
00800 ;CHECK TO BE SURE INITIALIZATION IS COMPLETE.
00900 FIOC1: TRNN CINI,17 ;IS CHANNEL ASSIGNED?
01000 PUSHJ FP,FCHNAS ;NO. ASSIGN CHANNEL
01100 TLNN CFSTAT,INITB ;IS DEVICE ATTACHED TO CHANNEL?
01200 PUSHJ FP,FCHINI ;NO. INITIALIZE CHANNEL
01300 MOVEI FAC2,OUTBFB+OUTPB+ENTRB+OBUFB+OCLOSB ;OUTPUT BITS
01400 TLNE CFSTAT,FOUTB ;OUTPUT?
01500 MOVEI FAC2,INBFB+INPB+LOOKB+IBUFB+ICLOSB ;NO SO INPUT BITS
01600 TLNE CFSTAT,(FAC2) ;TRAP FOR
01700 JRST FIOE1 ;FILE OPEN IN WRONG DIRECTION
01800 TLNN CFSTAT,LOOKB+ENTRB ;HAS LOOKUP OR ENTER BEEN DONE?
01900 PUSHJ FP,FEL ;NO
02000 LDB FAC2,[POINT 4,CINI,17] ;LOAD DATA MODE IN FAC2
02100 CAIL FAC2,SD ;DUMP MODE?
02200 JRST FIOC2 ;YES
02300 TLNN CFSTAT,INBFB+OUTBFB ;NO. BUFFER SET UP?
02400 PUSHJ FP,FIOBUF ;NO
02500 FIOC2: PUSHJ FP,FIO ;NOW EVERYTHING IS READY .. SO DO IO
02600 PUSHJ FP,XCTUUO
02700 STATUS 0,CDSTAT
02800 POPJ FP, ;RESTORE AC'S & RETURN TO CALLING ROUTINE
02900
03000 FIOE1: TRO CFSTAT,IOFAO ;FILE ALREADY OPEN
03100 POPJ FP,
00100 ;ROUTINE TO SEARCH FOR FREE CHANNEL
00200 ;CALL PUSHJ FP,FCHNAS
00300 ;IF NO FREE CHANNEL, SETS IOCNA AND EXITS TO CALLER.
00400
00500
00600 EXTERNAL MCLIST,CLIST
00700
00800 FCHNAS: MOVEI FAC4,17 ;LOAD CHANNEL NUMBER
00900 FCHNA0: MOVSI FAC3,MCLIST ;LOAD [XWD -CLIST LENGTH,,0]
01000 FCHNA1: MOVE FAC2,CLIST(FAC3) ;SEARCH FILE DATA BLOCKS
01100 HLRZ FAC2,CINI(FAC2) ;FOR CHANNEL C(FAC4).
01200 CAME FAC2,FAC4 ;IS IT ASSIGNED TO THIS FILE?
01300 AOBJN FAC3,FCHNA1 ;NO. CHECKED ALL FILES?
01400 JUMPGE FAC3,FCHNA2 ;YES. WAS IT ASSIGNED?
01500 SOJG FAC4,FCHNA0 ;YES. TRY ANOTHER
01600 TRO CFSTAT,IOCNA ;NONE AVAILABLE - SET ERROR BIT
01700 FPOPJ1: POP FP,FAC1 ;POP OUT RETURN ADDRESS
01800 POPJ FP, ;JRST FRET ... EXIT FILEIO
01900
02000 FCHNA2: HRRM FAC4,CINI ;ASSIGN THIS CHANNEL
02100 POPJ FP,
00100 ;INITIALIZE CHANNEL
00200 ;CALL PUSHJ FP,FCHINI
00300 ; RETURNS WITH CHANNEL INITIALIZED
00400
00500 ;IF NO DEVICE BY C(CDNAM, SETS IONSD AND EXITS
00600 ;IF DEVICE NOT AVAILABLE, SETS IODNA AND EXITS
00700 ;IF DATA MODE ILLEGAL FOR THIS DEVICE, SETS IOIDM AND EXITS
00800 ;IF BUFFER HEADER ADDRESS IS < 74, SETS IOBHPD AND EXITS
00900 ;IF BUFFER HEADER EXCEEDS ALLOCATED CORE, SETS IOBHOB AND EXITS
01000
01100 EXTERNAL .JBREL
01200
01300 FCHINI: MOVE FAC1,FACS+16 ;LOAD NORMAL CONTENTS OF FDB
01400 DPB CINI,[POINT 4,FCHIN1,12] ;PUT CHANNEL NUMBER IN OPEN
01500 MOVE CDCHAR,CDNAM
01600 CALLI CDCHAR,4 ;GET DEVICE CHARACTERISTICS
01700 JUMPE CDCHAR,FCHIE1 ;NO SUCH DEVICE IF ZERO
01800 TLNN CDCHAR,DVAVAL ;IS DEVICE AVAILABLE?
01900 JRST FCHIE2 ;NO
02000 LDB FAC3,[POINT 4,CINI,17] ;MODE
02100 MOVEI FAC2,1
02200 LSH FAC2,-(FAC3)
02300 AND FAC2,CDCHAR ;LEGAL DATA MODE?
02400 JUMPE FAC2,FCHIE3
02500 CAIL FAC3,SD ;YES. DUMP MODE?
02600 JRST FCHIN1 ;YES
02700 TLNE CFSTAT,FOUTB ;OUTPUT?
02800 HRLZM CBUFH,2(FAC1) ;YES SO PUT HEADER IN LEFT HALF
00100 FCHIN1: OPEN @FACS+16 ;INITIALIZE DEVICE
00200 JRST FCHIE2 ;DEVICE NOT AVAILABLE
00300 TLO CFSTAT,INITB
00400 CAIL FAC3,SD ;DUMP MODE?
00500 POPJ FP, ;YES
00600 MOVSI FAC2,OBUFB ;NO
00700 TLNN CFSTAT,FOUTB ;OUTPUT?
00800 MOVSI FAC2,IBUFB ;NO.
00900 OR CFSTAT,FAC2
01000 POPJ FP,
01100
01200 FCHIE2: TROA CFSTAT,IODNA ;DEVICE NOT AVAILABLE
01300 FCHIE3: TRO CFSTAT,IOIDM ;ILLEGAL DATA MODE
01400 JRST FPOPJ1 ;EXIT TO CALLER
01500
01600 FCHIE4: TROA CFSTAT,IOBHOB ;BUFFER HEADER OUT OF BOUNDS
01700 FCHIE5: TRO CFSTAT,IOBHPD ;BUFFER HEADER IN PROTECTED JOBDATA AREA
01800 JRST FPOPJ1 ;EXIT TO CALLER
01900
02000 FCHIE1: TRO CFSTAT,IONSD ;NO SUCH DEVICE
02100 JRST FPOPJ1
02200
02300 COMOBH: BLOCK 3 ;COMMON OUTPUT BUFFER HEADER
00100 ;LOOKUP/ENTER
00200
00300 ;CALL PUSHJ FP,FEL
00400 ; RETURN IF NO ERRORS
00500
00600
00700 EXTERNAL .JBREL
00800
00900
01000 FEL: TLNE CFSTAT,FOUTB ;LOOKUP?
01100 JRST FENTR1 ;NO
01200 PUSHJ FP,XCTUUO ;YES
01300 LOOKUP 0,(CDIR)
01400 JRST FLOOK3 ;FILE NOT FOUND
01500 TLO CFSTAT,LOOKB
01600
01700 POPJ FP,
01800
01900 FENTR1: PUSHJ FP,XCTUUO
02000 ENTER 0,(CDIR)
02100 JRST .+3
02200 TLO CFSTAT,ENTRB
02300 POPJ FP,
02400 TROA CFSTAT,IODDF ;DIRECTORY FULL
02500
02600 FLOOK1: TRO CFSTAT,IOFEPD ;ENTRY BLOCK IN PROTECTED JOB
02700 JRST FPOPJ1 ;JOB DATA AREA
02800
02900 FLOOK3: TRO CFSTAT,IOFNF ;FILE NOT FOUND
03000 JRST FPOPJ1
00100 ;INBUF/OUTBUF
00200
00300 ;CALL PUSHJ FP,FIOBUF
00400 ; RETURN IF NO ERRORS
00500
00600
00700 EXTERNAL .JBFF,.JBREL
00800
00900
01000 FIOBUF: TLNE CFSTAT,FOUTB ;INPUT?
01100 JRST FOUTB1 ;NO
01200 PUSHJ FP,XCTUUO
01300 INBUF 2 ;GET 2 BUFFERS
01400 TLO CFSTAT,INBFB
01500 POPJ FP,
01600
01700 FOUTB1: PUSHJ FP,XCTUUO
01800 OUTBUF 2 ;AGAIN 2 BUFFERS
01900 TLO CFSTAT,OUTBFB
02000 POPJ FP,
00100 ;INPUT/OUTPUT EXECUTION
00200
00300 ;CALL PUSHJ FP,FIO
00400 ; RETURN IF NO ERRORS
00500
00600
00700 EXTERNAL .JBREL
00800
00900
01000 FIO: LDB FAC3,[POINT 4,CINI,17] ;LOAD DATA MODE IN FAC3
01100 CAIGE FAC3,SD ;DUMP MODE?
01200 JRST FIOB1 ;NO
01300 FIODM1: CAMLE CBADR,.JBREL ;IS COMMAND LIST POINTER OK?
01400 JRST FINPE2 ;NO
01500 SETZM FAC1 ;YES. CHECK COMMAND LIST
01600 SKIPN FAC4,@(CBADR) ;DONE?
01700 JRST FIODM2 ;YES
01800 HLRE FAC2,FAC4 ;NO
01900 ADDM FAC2,FAC1 ;ACCUMULATE LENGTHS
02000 HRRZS FAC4
02100 SUB FAC4,FAC2
02200 CAMLE FAC4,.JBREL ;IS DUMP REGION IN BOUNDS?
02300 JRST FINPE3 ;NO
02400 AOJA FAC3,FIODM1 ;YES
02500
02600 FIODM2: TLNE CDCHAR,DVDIR ;DECTAPE?
02700 TLNE CDCHAR,DVDSK
02800 JRST FOUTP2 ;NO
02900 HLRZ FAC3,CDBLOCK ;YES
03000 MOVNS FAC2,FAC1
03100 LSH FAC2,^D8
03200 ADD FAC3,FAC2
03300 CAMLE FAC3,1103 ;FIT ON DECTAPE?
03400 JRST FINPE1 ;NO
03500 HLL FAC3,CDBLOCK ;YES. ADVANCE BLOCK NUMBER
03600 MOVSM FAC3,CDBLOCK
03700
03800 FIODM3: TLNE CFSTAT,FOUTB ;INPUT?
03900 JRST FOUTP1 ;NO
04000
04100 FINP1: ;PUSHJ FP,XCTUUO
04200 ;USETI 0,(FAC3)
04300 PUSHJ FP,XCTUUO
04400 INPUT 0
04500
04600 TLO CFSTAT,INPB ;SET INPUT DONE
04700 TLZ CFSTAT,ICLOSB ;SET FILE NOT CLOSED
04800 POPJ FP,
04900
05000 FOUTP1: PUSHJ FP,XCTUUO
05100 USETO 0,(FAC3)
05200 PUSHJ FP,XCTUUO
05300 OUTPUT 0,(CBADR)
05400
05500 FOUTP6: TLO CFSTAT,OUTPB
05600 POPJ FP,
00100 ;NONDUMP MODE IO
00200 FIOB1:
00300 FOUTP2: TLNE CFSTAT,FOUTB ;INPUT?
00400 JRST FOUTP4 ;NO
00500 JRST FINP1 ;YES
00600
00700
00800 FOUTP3: PUSHJ FP,XCTUUO
00900 UGETF 0,FAC3 ;GET LINK
01000 PUSHJ FP,XCTUUO
01100 USETO 0,(FAC2)
01200 MOVSS FAC2
01300 HRR FAC2,FAC3
01400 MOVE FAC3,@(CBUFH) ;STORE LINK IN BUFFER
01500 HRLM FAC2,1(FAC3)
01600 MOVSM FAC2,CDBLOCK ;ADVANCE BLOCK NUMBER
01700
01800 FOUTP4:
01900 FOUTP5: PUSHJ FP,XCTUUO
02000 OUTPUT 0,
02100 JRST FOUTP6
02200
02300 FINPE1: TROA CFSTAT,IOIBN ;ILLEGAL DECTAPE BLOCK NUMBER
02400
02500 FINPE2: TRO CFSTAT,IOCLOB ;DUMP COMMAND LIST OUT OF BOUNDS
02600 JRST FPOPJ1
02700
02800 FINPE3: TROA CFSTAT,IOCOB ;DUMP COMMAND OUT OF BOUNDS
02900 FCLOE1: TRO CFSTAT,IOBTH ;CHANNEL OPEN BOTH IN AND OUT
03000 JRST FPOPJ1
00100 ;CLOSE FILE
00200
00300 ;CALL MOVEI FDB,ADDRESS OF FILE DATA BLOCK
00400 ; JSP 17,FCLOSE
00500 ; RETURN
00600
00700
00800 ENTRY FCLOSE
00900
01000
01100 FCLOSE: JSR FSAVE ;SAVE AC'S, LOAD FILE DATA BLOCK IN 0-11
01200 TLNE CBUFH,-1 ;OPEN FOR BOTH INPUT AND OUTPUT?
01300 POPJ FP, ;YES - SO CLOSING IS A NONO
01400 TRNN CINI,-1 ;TEST FOR CHANNEL #
01500 POPJ FP, ;RETURN IF FILE NOT OPEN.
01600 JUMPE CFSTAT,.-1 ;ALSO RETURN IF NOT OPENED
01700 TLNE CFSTAT,OCLOSB+ICLOSB ;FILE ALREADY CLOSED?
01800 POPJ FP, ;YES SO LEAVE
01900 SETZM CFSTAT ;CLOSE THE FILE AND FORGET IT
02000 PUSHJ FP,XCTUUO
02100 CLOSE
02200 PUSHJ FP,XCTUUO
02300 STATUS 0,CDSTAT
02400 POPJ FP,
00100 ;RELEASE CHANNEL
00200
00300 ;CALL MOVEI FDB,ADDRESS OF FILE DATA BLOCK
00400 ; JSP 17,FRELEASE
00500 ; RETURN
00600
00700 ENTRY FRELEA
00800
00900 FRELEA: JSR FSAVE
01000 FRELE1: TRNN CINI,-1
01100 JRST FRELE2
01200 PUSHJ FP,XCTUUO
01300 RELEAS 0,
01400 FRELE2: HLLZS CINI
01500 SETZB CFSTAT,CDSTAT
01600 SETZB CDCHAR,CDBLOCK
01700 POPJ FP,
00100 ;SAVE ACCUMULATORS, MOVE FILE DATA BLOCK TO AC0-AC11,
00200 ;SETUP PUSHDOWN POINTER
00300
00400 ;CALL JSR FSAVE
00500
00600
00700 FSAVE: 0
00800 MOVEM 0,FACS ;SAVE AC0
00900 MOVE 0,[XWD 1,FACS+1] ;LOAD BLT POINTER
01000 BLT 0,FACS+17 ;SAVE AC1-AC17
01100 HRLZS FDB ;BLT POINTER [XWD FDB,,0]
01200 BLT FDB,CBADR ;BLT FDB INTO 0-11
01300 MOVE FP,[XWD -FPDN+1,FPDL] ;LOAD FP WITH PUSHD POINTER
01400 MOVSS CINI ;SWAP CHANNEL NU TO RIGHT
01500 JRST @FSAVE ;RETURN
01600
01700
01800 ;RESTORE FILE DATA BLOCK AND ACCUMULATORS AND RETURN TO USER.
01900 ;CALL JRST FRET OR POPJ FP,
02000
02100
02200 FRET: MOVSS CINI
02300 HRRZ FP,FACS+FDB ;LOAD FILE DATA BLOCK ADDRESS
02400 ADDI FP,CBADR
02500 HRRM FP,.+2
02600 HRRZ FP,FACS+FDB ;LOAD FILE DATA BLOCK ADDRESS
02700 BLT FP,0 ;RESTORE FILE DATA BLOCK TO CORE
02800 MOVSI 17,FACS ;BLT POINTER TO RESTORE AC'S
02900 BLT 17,17 ;RESTORE AC'S
03000 JRST (SRR)
03100
03200
03300 FACS: BLOCK 20
03400 FPDL: EXP FRET
03500 BLOCK 10
03600 FPDN=.-FPDL
00100 ;EXECUTE UUO
00200 ;CALL PUSHJ FP,XCTUUO
00300 ; UUO
00400
00500
00600 XCTUUO: DPB CINI,[POINT 4,@(FP),12]
00700 POPJ FP,
00800
00900
01000 ;MOVE OUTPUT BUFFER HEADER TO COMOBH
01100 ;CALL PUSHJ FP,LDCOMH
01200
01300
01400 LDCOMH: PUSH FP,FAC3 ;SAVE FAC3
01500 HRL FAC3,CBUFH
01600 HRRI FAC3,COMOBH
01700 BLT FAC3,COMOBH+2
01800 POP FP,FAC3
01900 POPJ FP,
02000
02100
02200 ;MOVE COMOBH TO OUTPUT BUFFER HEADER
02300 ;CALL PUSHJ FP,DPCOMH
02400
02500
02600 DPCOMH: PUSH FP,FAC3
02700 HRRZ FAC3,CBUFH
02800 ADDI FAC3,2
02900 HRRM FAC3,.+3
03000 HRLI FAC3,COMOBH
03100 HRR FAC3,CBUFH
03200 BLT FAC3,.
03300 POP FP,FAC3
03400 POPJ FP,
00100 ;REASSIGN DEVICE
00200 ;CALL MOVEI FDB,ADDRESS FOF FILE DATA BLOCK
00300 ; JSP 17,FREASS
00400 ; JOB NUMBER
00500 ; RETURN
00600
00700 ENTRY FREASS
00800
00900 FREASS: JSR FSAVE
01000 PUSHJ FP,FRELE1 ;RELEASE DEVICE
01100 AOS SRR
01200 MOVE FAC1,-1(SRR)
01300 MOVE FAC2,CDNAM
01400 CALL FAC1,[SIXBIT /REASSI/]
01500 JUMPN FAC1,.+2 ;JOB INITIALIZED?
01600 TRO CFSTAT,IOJNI ;NO
01700 JUMPN FAC2,.+2 ;YES. DEVICE ASSIGNED?
01800 TRO CFSTAT,IODNA ;NO
01900 POPJ FP,
02000 END