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3a-sources/info.mac
There are 24 other files named info.mac in the archive. Click here to see a list.
;<3-UTILITIES>INFO.MAC.3, 16-Nov-77 14:24:15, EDIT BY KIRSCHEN
;UPDATE VERSION NUMBERS FOR RELEASE 3
;<3-UTILITIES>INFO.MAC.2, 8-Nov-77 10:47:28, EDIT BY KIRSCHEN
;MORE COPYRIGHT UPDATING...
;<3-UTILITIES>INFO.MAC.1, 26-Oct-77 11:05:05, EDIT BY KIRSCHEN
;UPDATE COPYRIGHT FOR RELEASE 3
;<2-UTILITIES>INFO.MAC.8, 31-Jan-77 15:17:30, EDIT BY MILLER
;FIX FREE SPACE BUGS
;<2-UTILITIES>INFO.MAC.7, 27-Dec-76 17:06:16, EDIT BY HURLEY
;<2-UTILITIES>INFO.MAC.6, 22-Dec-76 13:46:08, EDIT BY HURLEY
;<2-UTILITIES>INFO.MAC.5, 13-Sep-76 16:23:53, EDIT BY MILLER
;MORE CHANGES FOR MULTIPLE STRUCTURES
;<2-UTILITIES>INFO.MAC.4, 13-Sep-76 13:57:45, EDIT BY MILLER
;MORE OF THE SAME
;<2-UTILITIES>INFO.MAC.3, 13-Sep-76 10:28:00, EDIT BY MILLER
;REWRITE SCAN ROUTINE FOR MULTIPLE STRUCTURES
;<1A-UTILITIES>INFO.MAC.19, 6-MAY-76 11:37:02, EDIT BY HURLEY
;<1A-UTILITIES>INFO.MAC.18, 6-MAY-76 10:56:48, EDIT BY HURLEY
;<1A-UTILITIES>INFO.MAC.14, 8-APR-76 11:10:59, EDIT BY HURLEY
;TCO 1244 - ADD .DIRECT .XTABM FOR MACRO 50 ASSEMBLIES
;<1A-UTILITIES>INFO.MAC.13, 31-MAR-76 10:13:06, EDIT BY HURLEY
;TCO # 1227 - ADD TOPS-20 ENTRY VECTOR AND VERSION NUMBER
TITLE INFO
;THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY ONLY BE USED
; OR COPIED IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE.
;
;COPYRIGHT (C) 1976, 1977, 1978 BY DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
IFNDEF .PSECT,<
.DIRECT .XTABM>
REPEAT 0 ,<
THIS IS [SYSTEM]INFO FOR TOPS-20. IT PERFORMS THE NECESSARY
FUNCTION OF MAPPING GENERIC NAMES OT PIDS. ALSO IT SUPPORTS THE
ONE PRIVILEGED FUNCTION OF DISASSOCIATING NAMES FROM
PIDS WHICH ARE BEING DROPPED. NONE OF THE OTHER PRIVILEGED TOPS10
INFO FUNCTIONS ARE SUPPORTED AS THE MUTIL JSYS REPLACES THESE
CLUMSY AND INEFFICIENT FUNCTIONS. ALSO, THE FOLLOWING ENHANCEMENTS HAVE
BEEN MADE TO INFO:
1) GENERIC NAMES MAY BE OF ANY LENGTH.
2) GENERIC NAMES MAY CONTAIN DIRECTORY NAMES BETWEEN
THE SQUARE BRACKETS.
3) ANGLE BRACKETS ARE ACCEPTABLE IN GENERIC NAMES
>
; VERSION NUMBER DEFINITIONS
VMAJOR==3 ;MAJOR VERSION OF INFO
VMINOR==0 ;MINOR VERSION NUMBER
VEDIT==4 ;EDIT NUMBER
VWHO==0 ;GROUP WHO LAST EDITED PROGRAM (0=DEC DEVELOPMENT)
VINFO== <VWHO>B2+<VMAJOR>B11+<VMINOR>B17+VEDIT
DEFINE FATAL (MESSO) <
JRST [ HRROI A,[ASCIZ /?'MESSO'
/]
PSOUT
HALTF]
>
DEFINE VERSIZ (LEN,VALU)< ;;DO SIZE VERFICATION
IFIDN <VALU>,<>,<MOVEI A,<.IPCUF>_6> ;;DEFAULT ERROR
IFDIF <VALU>,<>,<MOVEI A,<VALU>_6> ;;USE PROVIDED VALUE
HLRZ B,MESSER ;;GET SIZE OF RECEIVED MESSAGE
CAIGE B,LEN ;;BIG ENOUGH?
JRST NACK1 ;;NO. FOO ON IT
>
DEFINE ERROR (MESSO) <
JRST [ HRROI A,[ASCIZ /?'MESSO'
/]
PSOUT
MOVE P,[IOWD STKSIZ,STACK]
MOVEI A,.PRIOU
MOVE B,[.FHSLF,,-1]
ERSTR
JFCL
JFCL
JRST TRYAGN]
>
SEARCH MONSYM,MACSYM
SALL
;DEFINE REGISTERS
F==0
A==1
B==2
C==3
D==4
W==5
W1==6
W2==7
W3==10
W4==11
W5==12
P==17
;DEFINE SOME USEFUL OPDEFS
OPDEF CALL [PUSHJ P,]
OPDEF RET [POPJ P,]
;DEFINE HEADER OFFSETS
NODE==2
STRING==2
PID==1
SIZZ==0
;DEFINE CODES
IPCSN%==67
IPCDU%==6
IPCDD%==7
IPCRS%==10
IPCRR%==11
IPCRY%==12
IPCPI%==15
IPCUF%==16
IPCFF%==72
IPCBP%==74
IPCDN%==75
IPCNN%==76
IPCEN%==77
IPCCF%==.IPCCF ;SENT BY INFO VALUE
;DEFINE MUTIL FUNCTIO CODES
MU.INP==.MUGTI ;GET INFO PID
MU.CRE==.MUCRE ;CREATE ^ PID
MU.JOB==.MUFOJ ;GET JOB NO OF A PID
MU.PID==.MUFJP ;GET PIDS OF A JOB
MU.QUR==.MUQRY ;QUERY
MU.PSI==.MUPIC ;DIDDLE PSI FOR PID
MU.INF==.MUDFI ;MAKE ME INFO
;DEFINE LOCAL STORAGE
TSTDIR: ASCIZ /PS:</
BLOCK 11 ;BUFFER FOR TESTING DIR NAME
ADD1: Z 0
LEVTAB: Z ADD1
Z ADD1
Z ADD1 ;LEVEL TABLE FOR INTS
CHNTAB: 1,,GOTONE ;INT FOR PACKET READY
STKSIZ==30 ;PDL SIZE
STACK: BLOCK STKSIZ ;RESERVE THE STACK
OUTTER: Z 0
BLOCK 3 ;SSEND BLOCK
HEATER: Z MU.QUR
HEADER: Z 0 ;MESSAGE RECEIVE BLOCK
SEND: Z 0 ;SENDER'S PID
RCVPID: Z 0 ;MY PID
MESSER: XWD 1000,MESBUF ;FOR GETTINGF A MESSAGE
DIRS: Z 0 ;LOGGED IN DIR
PRIVS: Z 0 ;PRIVILEGES
CDIRS: Z 0 ;CONNECTED DIR
MYPID: Z 0 ;SAVE MY PID
MSGBUF==676000
MESBUF==MSGBUF ;PUT ON PAGE BOUNDARY
FRESIZ==3000 ;3 PAGES OF FREE SPACE
USEHD: Z 0 ;HEADER FOR IN USE BLOCKS
FREHD: Z 0 ;FRRE SPACE JEADER
SENDQ: Z 0 ;THE SEND QUEUE
CPYPID: Z 0 ;PID TO GET C OPY OF REPLY
MAXTRY==5 ;MAX TRIES FOR HIS QUTA OVER
RELOC 1000-140 ;WHERE CODE STARTS
;PROGRAM ENTRY VECTOR
ENTVEC: JRST INFO ;STARTING LOCATION
JRST INFO ;REENTER LOCATION
VINFO ;VERSION NUMBER
;THESE ARE THE FREE SPACE MANIPULATION ROUTINES. THEY DESTROY
;ALL OF THE WORK REGISTERS. ALLOC GETS (A) WORDS FORM THE
;POOL AND RETURNS A POINTER IN A. DEALL RETURNS THE BLOCK POINTED TO
;BY A.
;ALLOC WILL USE THE SMALLEST BLOCK OF AVAILABLE STORAGE
;TO SATISFY THE REQUEST. UNUSED PORTIONS OF FREE BLOCKS ARE LEFT
;ON THE QUEUE.
;DEALL WILL MERGE TOGETHER ADJACENT BLOCKS ON EACH RETURN OF
;A BLOCK
ALLOC: SETZB W4,W5 ;POINTER AND SIZE OF BLOCK
MOVEI W,FREHD ;WHERE IT ALL STARTS
LOOK: HRRZ W2,(W) ;WHERE NEXT BLOCK IS
JUMPE W2,FINAL ;AT THE END. LOOK AT WHAT WE HAVD
HLRZ W1,(W2) ;COUNT
CAIN W1,(A) ;EXACT MATCH?
JRST USEIT ;YES. DO IT
CAIG W1,(A) ;BIG ENOUGH?
JRST NOPE ;NO. FOO
;FOUND A CANDIDATE. SEE IF HE'S BETTER THAN THE LAST
SKIPE W5 ;GOT ONE YET?
CAIGE W1,(W5) ;YES. THIS ONE BETTER?
SKIPA W5,W1 ;YES. USE IT
JRST NOPE ;NO
MOVE W4,W ;REMEMBER POINTER
NOPE: HRRZ W,(W) ;GET NEXT BLOCK
JRST LOOK ;GO PROCESS IT
FINAL: SKIPN W1,W5 ;FOUND A GOOD ONE?
RET ;NO. BOMB TIME
MOVE W,W4 ;POINTER
USEIT: HRRZ W4,(W) ;AREA TO ALLOCATE
MOVNI W1,(A) ;NUMBRE OF WORDS NEEDED
HRLZS W1 ;NEGATIVE TO LEFT HALF
ADD W1,(W4) ;DO IT
ADDI W4,(A) ;WHERE NRW BLOCK IS
TLNN W1,-1 ;ANYTHING LEFT IN THE BLOCK?
JRST [ HRRZ W4,0(W) ;NO. GET THE BLOCK ADDRESS AGAIN
HRRZ W4,0(W4) ;AND GET NEXT BLOCK ON THE FREE LIST
JRST USEI1] ;AND MAKE THIS NEXT
MOVEM W1,0(W4) ;YES. MAKE IT A NEW BLOCK
USEI1: HRRZ W5,(W)
HRLZM A,(W5) ;ASSIGNED BLOCK
HRRM W4,(W) ;LINK IN NEW FREE BLOCK
MOVEI A,(W5) ;WHAT WE ASSIGNED
AOS (P)
RET ;GOOD RETURN
;THIS IS THE DEALLOCATE CODE. INPUT IS A=POINTER TO BLOCK
DEALL: MOVEI W,FREHD
LOOK1: HRRZ W1,(W) ;BLOCK HEAD
JUMPE W1,HERE ;IF AT THE END IT GOES HERE
CAIL W1,(A) ;PAST THIS BLOCK?
JRST HERE ;YES. PU IT IN HERE
MOVE W,W1 ;NO. STEP
JRST LOOK1 ;GO DO MORE
HERE: CAIN W,FREHD ;AT THE TOP?
JRST LNKDWN ;YES. CANT MERGE UP
HLRZ W1,(W) ;GET SIZE OF PREVIOUS
ADDI W1,(W) ;TO THE END
CAIE W1,(A) ;UP TO THE BLOCK RELEASING?
JRST LNKDWN ;NO. LINK IT IN
HLRZ W2,(A) ;DO THE MERGE
HLRZ W1,(W)
ADDI W1,(W2) ;NEW TOTAL SIZE
SETZM (A) ;BLOT OUT THIS HEADER
HRLM W1,(W) ;NEW COUNT
JRST SEEDWN ;TRY TO MERGE DOWN
LNKDWN: HRRZ W2,(W) ;LINK TO NEXT
HRRM A,(W) ;PUT THIS NEW BLOCK IN
HRRM W2,(A) ;AND PUT OLD LINK IN IT
MOVE W,A ;NEW BASE BLOCK
SEEDWN: HLRZ W1,(W) ;COUNRT
ADDI W1,(W) ;END OF THIS BLOCK
HRRZ W2,(W) ;NEXT BLOCK
CAIE W1,(W2) ;THIS IT?
RET ;NO. DONE
HLRZ W3,(W2) ;YES. MUST MERGE THEM
HLRZ W1,(W) ;COUNT OF PREVIOUS
ADDI W3,(W1) ;NEW COUNT OF MERGED BLOCKS
HRLM W3,(W)
HRRZ W3,(W2) ;ITS LINK
HRRM W3,(W) ;NEW DOWN LINK FOR THIS GUY
SETZM (W2) ;CLEAR IT
RET ;ALL DONE
;TRANSFER TABLE FOR INFO FUNCTIONS
TABLE: IPCIW ;FIND PID FO NAME
IPCIG ;FIND NAME FOR PID
IPCII ;ASSIGN TEMP NAME
IPCIJ ;ASSIGN PERMANENT NAME
NACK
NACK
NACK
REPEAT 5,<NACK> ;UNIMPLEMENTED FUNCTIONS
IPCIS ;IPCC NOTICE
MAXFNC==.-TABLE ;MAXIMUM FUNCTION NUMBER
;THIS ROUTINE TAKES AN ASCIZ NAME AND VERIFIESS IT AND
;PACKS IT INTO N CONTIGUOUS WORDS.
NAME1: TDZA F,F ;NO SYNTAX PLEASE
NAME: MOVEI F,1 ;SYNTAX TOO
MOVE W,[POINT 7,MESBUF+2] ;POINTER TO THE NAME
SCAN: ILDB W1,W ;GET BYTE
JUMPE W1,ALLDNE ;AT THE END
SKIPN F ;SYNTAX TOO?
JRST SCAN ;NO. JUST DO NAME
CAIE W1,"<" ;DIRECTORY SPECIFIED?
CAIN W1,"[" ;"
JRST INDIR ;YES. MUST VERIFY IT
JRST SCAN ;CONTINUE
INDIR: MOVE W5,[POINT 7,TSTDIR,20] ;GET POINTER FOR NAME
IDPB W1,W5 ;STORE THE PUNCTUATION
INDIR1: ILDB W1,W ;NEXT BYTE
IDPB W1,W5 ;SAVE BYTE
JUMPE W1,POPJ1 ;ILLEGAL SYNTAX
CAIE W1,">" ;END OF NAME?
CAIN W1,"]" ;SAME HERE
SKIPA
JRST INDIR1
MOVE W3,PRIVS ;LLOOK AT HIS PRIVILEGES
TRNE W3,600000 ;WHEEL OR OPERATOR?
JRST SCAN ;YES. DONT VERIFY
MOVE A,W5 ;MOVE POINTER
SETZ W1, ;GET A NULL
IDPB W1,A ;TIE OFF THE STRING
MOVX A,RC%EMO ;MAKE EXACT MATCH ONLY
HRROI B,TSTDIR ;THE STRING
RCDIR ;GO SEE IF IT EXISTS
ERJMP FINE ;NOT A DIR.
TXNE A,RC%NOM!RC%AMB ;FOUND IT?
JRST FINE ;NO. GIVE UP THEN
CAMN C,CDIRS ;IS THIS THE JOB'S CONNECTED DIR?
JRST FINE ;YES. ALL DONE THEN
DPB W1,W5 ;TIE OFF STRING FOR USER NUMBER
MOVX A,RC%EMO ;EXACT MATCH AGAIN
MOVE B,[POINT 7,TSTDIR,27] ;WHERE STRING IS
RCUSR ;GET USER NAME
ERJMP POPJ1 ;IF ERROR, DISALLOW THIS NAME
TXNE A,RC%NOM!RC%AMB ;FOUND IT?
JRST POPJ1 ;NO. DISALLOW IT THEN
CAME C,DIRS ;IS THIS THE LOGGED IN DIR?
JRST POPJ1 ;NO. ERROR THEN
FINE: JRST SCAN ;AND GO ON
ALLDNE: MOVEI A,(W) ;WHERE IRT ENDED
SUBI A,MESBUF+1 ;WORDSS IN TEXT
TLNE W,200000 ;SEE IF NULL IS AT START OF A WORD
TLNN W,100000 ;"
SKIPA ;ITS NOT. USE CURRENT COUNT
JRST [ SOSE A ;IT IS. DECREMENT AND VERIFY
AOS (P) ;MORE THAN ZERO WORDS
RET] ;DONE
AOS (P)
LDB D,[POINT 6,W,5] ;GET BYTE POSITION
SETZ B, ;WHERE MASK WILL BE ACCUMULATED
SETO C, ;A WORD FULL OF BITS
LSHC B,0(D) ;BUILD MASK
ANDCAM B,0(W) ;GET RID OF EXTRANEOUS BITS
POPJ1: POPJ P, ;AND DONE
;ROUTINE TO LOOK UP AN ASCIZ NAME IN ASSIGNED BLOCKS
;RETURNS A=BLOCK FOUND. W=POINTER TO PREVIOUS
LOOKUP: MOVEI W,USEHD ;THE HEAD OF THEM ALL
LOOK2: HRRZ W1,(W) ;GET NEXT ITEM
JUMPE W1,POPJ1 ;FAILED TO FIND IT
JUMPL B,[CAME A,PID(W1) ;PID MATCH?
JRST MORE ;NO
JRST GOOD]
HLRZ W4,SIZZ(W1) ;GET COUNT OF THIS ONE
SUBI W4,NODE ;DATA CONTENTS ONLY
CAIE B,(W4) ;SAME SIZE?
JRST MORE ;NO. GET MORE
MOVEI W2,STRING(W1) ;WHERE STRING IS
MOVE W5,A
CMPAR: MOVE W3,(W5) ;NEXT WORD
CAME W3,(W2) ;MATCH?
JRST MORE ;NO
AOS W5
AOS W2
SOJG W4,CMPAR ;DO ALL
GOOD: MOVE A,W1
AOS (P)
RET ;FOUND A MATCH
MORE: MOVE W,W1 ;GO ON
JRST LOOK2
;BEGINNING OF INFO
INFO: MOVEI A,400000
MOVE B,[LEVTAB,,CHNTAB] ;FOR INTS
SIR ;ESTABLISH INTS
MOVNI B,1
DIC ;DISSBALE EVERYTHING
MOVSI B,(1B0) ;IPCF CHANNEL
AIC ;ACTIVATE
MOVE A,44 ;FIRST FREE PAGE -1
MOVEI A,1(A) ;FIRST FREE PAGE
MOVEM A,FREHD ;INIT FREE SPACE HEADER
MOVEI B,MSGBUF ;END OF FREE SPACE
SUBI B,(A) ;SIZE OF FREE PSACE
HRLM B,(A) ;INIT FREE SPACE
MOVE P,[IOWD STKSIZ,STACK] ;INIT PDL
MOVEI W,MU.INP ;MAKE SURE NO INFO AROUND
MOVEI A,3
MOVEI B,W ;WHERE STUFF IS
SETO W1, ;FOR ME ONLY
MUTIL ;GET INFO'S PID
SKIPA ;OK
FATAL <[SYSTEM]INFO ALREADY EXISTS>
MOVEI W,.MUSPQ ;SET PID QUOTAS
MOVEI W2,777 ;MAX NUMBER OF PIDS
MUTIL ;GO SET THEM
MOVEI A,3 ;RESTORE THIS
MOVEI W,MU.CRE ;GET ME A PID
MOVEI W1,400000 ;TEMP
MUTIL ;GET IT
FATAL <INFO: COULD NOT ASSIGN A PID>
MOVEM W2,MYPID ;STASH
;NOW DECLARE ME TO BE [SYSTEM]INFO
MOVE W1,W2 ;ARG TO LOC+1
MOVEI W,MU.INF ;THE FUNCTION TO DO IT
MUTIL ;AND DO IT
FATAL <INFO: COULD NOT SET UP TO BE INFO>
;NOW PUT THE PID ON CHANNEL 0
MOVEI A,3 ;PACKET SIZE
MOVEI B,W ;PACKET ADDRESS
MOVEI W,MU.PSI ;THE PSI FUNCTION
MOVE W1,MYPID ;THE PID TO INT ON
SETZ W2, ;ONTO CHANNEL 0
MUTIL ;DO IT
JFCL ;SHOULD GO .IF NO,C'EST LA VIE
;NOW SEND EVERYONE THE INFO STATUP MESSAGE
MOVE A,[SIXBIT/JOBTTY/] ;GET NO OF JOBS IN SYSTEM
SYSGT ;GET IT
JFCL
HLLZ W,B ;SAVE COUNT
MOVEI A,<IPCCF%>B32+<IPCSN%>B29 ;THIS IS FROM INFO
MOVEM A,OUTTER
SETZM MSGBUF ;CLEAR MEAAGE WORD
DOJOB: MOVEI W1,MU.INP ;GET HIS INFO PID
MOVEI W2,(W)
MOVEI A,3
MOVEI B,W1
MUTIL ;DO IT
JRST NOPID ;IMPOSSIBLE,BUT DONT PANIC IF IT HAPPENS
CAME W3,MYPID ;AM I HIS INFO?
JRST NOPID ;NO. FORGET HIM THEN
MOVEI W1,MU.PID ;GET PED FOR JOB FUNCTION
MOVEM W1,MSGBUF+1
HRRZM W,MSGBUF+2 ;THE JOB NUMBER
MOVEI A,777 ;WORD COUNT
MOVEI B,MSGBUF+1 ;THE PACKET
MUTIL ;GET THE PIDS
JRST NOPID ;NO PID FOR YHIS JOB
MOVEI A,MSGBUF+3 ;START OF PIDS
PUSH P,W ;SAVE JOB INDEX
LOOP: SKIPN B,(A) ;A PID?
JRST NOPID1 ;NO. END OF LIST
ADDI A,2 ;NEXT ENTRY
CAMN B,MYPID ;IS IT ME?
JRST LOOP ;YESS. IGNORE IT
PUSH P,A ;SAVE PID POINTER
MOVEM B,SEND ;FAKE OUT SENDIT
MOVEI B,1 ;ONE WORD MESSAGE
CALL SENDIT ;SEND OFF THIS MESSAGE
POP P,A ;GET PID POINTER
JRST LOOP ;GO DO NEXT ONE
NOPID1: POP P,W ;GET BACK JOB INDEX
NOPID: AOBJN W,DOJOB ;DO ALL JOBS
;READY TO PROCESS REQUESSTS
TRYAGN: MOVEI A,7
MOVEI B,HEATER
MOVE W1,MYPID
MOVEM W1,HEADER ;THE ARG TO THE FUNCTION
MUTIL ;GET NEXT REQUEST IN QUEUE
JRST NONE ;NONE THERE
MOVE A,[1000,,MESBUF] ;YES
MOVE B,HEADER ;GET THE RETURNED HEADER
TRNE B,IP%CFV ;PAGE MODE?
HRRI A,<MESBUF>_<-11> ;YES. PLUG IN PAGE NUMBER
MOVEM A,HEADER+3 ;WHERE TO PUT NEXT MESSAGE
MOVSI A,(IP%CFB) ;DONT BLOCK
IORM A,HEADER ;TO THE HEADER
MOVEI A,7 ;# OF WORDS IN HEADER
MOVE B,MYPID ;GET MY PID
MOVEM B,RCVPID ;PUT IN AS RECEIVER
MOVEI B,HEADER
MRECV ;GET NEXT REQUEST.
ERROR <IMPOSSIBLE RETURN FROM MRECV>
MOVE A,HEADER ;GET HEADER
MOVE C,PRIVS ;LOOK AT HIS PRIVILEGES
SKIPN SEND ;DID HE IDENTIFY HIMSELF?
TRNE C,600000 ;NO. IS HE PROVILEGED?
SKIPA ;DO IT
JRST [ TRNE A,<.IPCCC>B32 ;FROM MONITOR?
JRST .+1 ;YES. DO I