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sdlcnv.mac
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TITLE SDLCNV - CONVERSION UTILITY FOR MONBTS
SUBTTL G.M. UHLER/GMU
;COPYRIGHT (C) 1979 BY
;DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
;
;
;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 WHICH IS NOT SUPPLIED BY DIGITAL.
SEARCH JOBDAT,MACTEN,UUOSYM
; AC DEFINITIONS
T1==1 ;FIRST OF 4 TEMPORARIES
T2==2
T3==3
T4==4
T5==5
P1==6 ;FIRST OF 4 PRESERVED
P2==7
P3==10
P4==11
P==17 ;PDL POINTER
; MISCELANEOUS DEFINITIONS
PDLLEN==10 ;LENGTH OF PDL
DSK==1 ;DISK CHANNEL
APN==2 ;CHANNEL TO APPEND TO CRASH.EXE
RIBPPN==1 ;PPN WORD IN RIB
RIBNAM==2 ;FILENAME WORD IN RIB
RIBEXT==3 ;EXTENSION WORD IN RIB
RIBSTS==17 ;STATUS WORD IN RIB
RIPNDL=200000 ;NO DELETE BIT IN RIBSTS
RIBCOD==176 ;UNLIKELY CODE WORD IN RIB
CODRIB==777777 ;UNLIKELY CODE
RIBSLF==177 ;SELF POINTER IN RIB
SDSVER==1 ;MAJOR VERSION
SDSMIN==0 ;MINOR VERSION
SDSEDT==0 ;EDIT NUMBER
SDSWHO==0 ;WHO LAST EDITED
LOC .JBVER
VRSN. (SDS)
RELOC
DEFINE ERROR (MSG),<
OUTSTR [ASCIZ\
?'MSG
\]
JRST KILL
>
DEFINE WARNJ (MSG,ADDR),<
OUTSTR [ASCIZ\
%'MSG\]
JRST ADDR
>
SALL
TWOSEG
RELOC 400000
SDLCNV: JFCL ;IGNORE CCL ENTRY
RESET ;STOP THE WORLD
MOVE P,[IOWD PDLLEN,PDL] ;SETUP A PDL
GETPPN T1, ;GET OUR PPN
JFCL ;AVOID STUPID SKIP
CAME T1,[1,,2] ;PRIVILEGED?
JRST NOTPRV ;NO
OUTSTR [ASCIZ/Structure on which to extend CRASH.EXE[1,4] by 4 blocks: /]
PUSHJ P,GETNAM ;GET THE STRUCTURE NAME
JRST NOTSTR ;NOT A STRUCTURE
PUSHJ P,XTNCRS ;EXTEND THE FILE
JRST KILL
;ROUTINE TO EXTEND CRASH.EXE[1,4] ON A STRUCTURE BY 4 BLOCKS.
;CALL WITH:
; P1/STRUCTURE NAME
;RETURN+1 ALWAYS
XTNCRS: MOVX T1,UU.PHS!.IODMP ;NEED A PHYSICAL DEVICE IN DUMP MODE
MOVE T2,P1 ;COPY DEVICE NAME
MOVX T3,0 ;NO BUFFERS
MOVE T4,[T1,,FLPBLK+.FOIOS] ;SETUP TO MOVE TO FILOP. BLOCK
BLT T4,FLPBLK+.FOBRH ;NEED THIS FOR LATER
OPEN DSK,T1 ;OPEN THE CHANNEL
JRST OPNERR ;CAN'T
MOVE T1,[SIXBIT/CRASH/] ;FILENAME IS CRASH
MOVSI T2,'EXE' ;EXTENSION IS EXE
MOVEI T3,0 ;NO PROT
MOVE T4,[1,,4] ;PPN IS 1,4
MOVE T5,[T1,,LKPBLK] ;SETUP TO MOVE IT TO THE LOOKUP BLOCK
BLT T5,LKPBLK+3 ;NEED THIS LATER
LOOKUP DSK,T1 ;LOOKUP THE FILE
JRST LKPERR ;FAILED
PUSHJ P,REDRIB ;READ AND CHECK RIB
JRST RRDERR ;FAILED
PUSHJ P,WTFRIB ;REWRITE RIB AFTER CLEARING RIPNDL
JRST RWTERR ;FAILED
MOVX T1,FO.PRV!<APN>B17!.FOAPP ;GET FILOP. FUNCTION TO APPEND
MOVEM T1,FLPBLK+.FOFNC ;STORE IN BLOCK
SETZM FLPBLK+.FONBF ;NO BUFFERS
MOVEI T1,LKPBLK ;POINT AT LOOKUP BLOCK
MOVEM T1,FLPBLK+.FOLEB ;STORE IN FILOP. BLOCKS
MOVE T1,[.FOLEB+1,,FLPBLK] ;POINT AT FILOP. BLOCK
FILOP. T1, ;DO IT
JRST FLPERR ;FAILED
MOVEI T1,4 ;WANT TO WRITE 4 MORE BLOCKS
OUTPUT APN,DSKIOW ;WRITE A BLOCK
SOJG T1,.-1 ;LOOP FOR FOUR
CLOSE APN, ;CLOSE CHANNEL
RELEAS APN, ;RELEASE IT
MOVE T1,BUF+RIBSLF ;GET BLOCK CONTAINING RIB
PUSHJ P,REDBLK ;REREAD IT
JRST RR1ERR ;FAILED
PUSHJ P,CHKRIB ;MAKE SURE IT'S OK
JRST WRGBLK ;WRONG BLOCK???
PUSHJ P,WTNRIB ;REWRITE RIB, SETTING RIPNDL
JRST RWTERR ;FAILED
RELEAS DSK, ;RELEAS CHANNEL
POPJ P, ;RETURN
NOTSTR: ERROR <Not a structure>
LKPERR: ERROR <LOOKUP of CRASH.EXE[1,4] failed>
RRDERR: ERROR <Unable to read the RIB for CRASH.EXE[1,4]>
WRGBLK: ERROR <Reread of RIB of CRASH.EXE[1,4] read the wrong block>
FLPERR: ERROR <FILOP. append of CRASH.EXE[1,4] failed>
NOTPRV: ERROR <Job not privileged, must be run as [1,2]>
OPNERR: WARNJ <Can't OPEN unit>,DEVPRT
RWTERR: WARNJ <Write error on RIB>,IOEPRT
RR1ERR: WARNJ <Read error on RIB, unable to set RIBNDL>,IOEPRT
IOEPRT: OUTSTR [ASCIZ/, Block = /]
MOVE T1,LSTBLK ;GET BLOCK NUMBER
PUSHJ P,PRTOCT ;PRINT IT
OUTSTR [ASCIZ/, Status = /]
MOVE T1,ERRSTS ;GET STATUS
PUSHJ P,PRTOCT ;PRINT IT
DEVPRT: OUTSTR [ASCIZ/, Unit = /]
MOVE T1,P1 ;GET UNIT NAME
PUSHJ P,PRTNAM ;PRINT IT
OUTSTR [ASCIZ/
/]
POPJ P, ;RETURN
KILL: RESET ;INSURE ALL IS STOPPED
EXIT ; AND GIVE UP
;ROUTINE TO PRINT A SIXBIT NAME ON THE TTY. STOPS ON THE FIRST
;SPACE. CALL WITH:
; T1/SIXBIT WORD
;RETURN+1 ALWAYS
PRTNAM: LSHC T1,-<5*6> ;RIGHT JUSTIFY CHAR IN T1
JUMPE T1,CPOPJ ;RETURN ON FIRST NULL
MOVEI T1,"0"-'0'(T1) ;CONVERT TO ASCII
OUTCHR T1 ;OUTPUT IT
LSHC T1,^D36 ;SETUP FOR RECURSIVE CALL
PJRST PRTNAM ;LOOP FOR ALL CHARS
;STANDARD ROUTINE TO PRINT AN OCTAL NUMBER. CALL WITH:
; T1/NUMBER
;RETURN+1 ALWAYS
PRTOCT: IDIVI T1,^D8 ;DIVIDE BY RADIX, REMAINDER IN T2
HRLM T2,0(P) ;STORE REMAINDER ON STACK
SKIPE T1 ;DONE YET?
PUSHJ P,PRTOCT ;NO, DO NEXT DIGIT
HLRZ T1,0(P) ;GET NEXT DIGIT BACK FROM STACK
ADDI T1,"0" ;CONVERT TO ASCII
OUTCHR T1 ;OUTPUT IT
POPJ P, ;RETURN TO CALLER
;ROUTINE TO READ A COMMAND FROM THE TERMINAL. STORE THE COMMAND
;IN CMDBUF AND A BYTE POINTER IN CMDB.
;RETURN+1 ALWAYS
REDCMD: MOVE T2,[POINT 7,CMDBUF] ;GET POINTER TO BUFFER
MOVEM T2,CMDB ;SAVE FOR CALLER
MOVX T3,^D80 ;ALLOW ONLY 80 CHARS
REDCM1: PUSHJ P,GETCHR ;GET NEXT CHARACTER
PUSHJ P,CHKBRK ;BREAK?
SKIPA ;NO
JRST REDCM2 ;YES, FINISH UP
SOJL T3,REDCM1 ;LOOP IF TOO MANY
IDPB T1,T2 ;STORE IN BUFFER
JRST REDCM1 ; AND LOOP
REDCM2: MOVEI T1,0 ;TERMINATE BUFFER
IDPB T1,T2 ; WITH TWO
IDPB T1,T2 ; ZEROS
POPJ P, ; AND RETURN
;ROUTINE TO READ ONE CHARACTER FROM THE TTY. IGNORES NULLS AND
;CARRIAGE RETURNS, MAPS LOWER TO UPPER CASE.
;RETURN+1 ALWAYS WITH
; T1/CHARACTER
GETCHR: INCHWL T1 ;GET CHARACTER
JUMPE T1,GETCHR ;LOOP IF NULL
CAXN T1,.CHCRT ; OR IF CR
JRST GETCHR ;...
CAIL T1,"a" ;LOWER CASE CHARACTER?
CAILE T1,"z" ;...
POPJ P, ;NO, JUST RETURN IT
SUBI T1,"a"-"A" ;FOLD TO UPPER CASE
POPJ P, ; AND RETURN
;ROUTINE TO CHECK FOR BREAK CHARACTER. CALL WITH:
; T1/CHARACTER
;RETURN+1 IF NOT A BREAK CHARACTER
;RETURN+2 IF A BREAK CHARACTER
CHKBRK: PUSH P,T2 ;DESTROY NO ACS
MOVX T2,1 ;GET A BIT TO SHIFT
LSH T2,(T1) ;SHIFT BY VALUE OF CHARACTER
TDNE T2,BRKTBL ;THIS A BREAK CHARACTER?
AOS -1(P) ;YES, BUMP RETURN POINT
POP P,T2 ;RESTORE T2
POPJ P, ; AND RETURN
BRKTBL: 1_.CHBEL!1_.CHVTB!1_.CHFFD!1_.CHCNZ!1_.CHESC!1_.CHLFD
;ROUTINE TO GET A SIXBIT NAME FROM THE TERMINAL.
;RETURN+1 IF BAD NAME TYPED
;RETURN+2 WITH SIXBIT NAME IN P1
GETNAM: PUSHJ P,REDCMD ;READ IN THE COMMAND
MOVX P1,0 ;INIT NAME
MOVE T2,[POINT 6,P1] ;BUILD BYTE POINTER TO P1
GETNA1: ILDB T1,CMDB ;GET NEXT CHARACTER
JUMPE T1,CPOPJ1 ;RETURN AT END OF LINE
CAIN T1,":" ;SPECIFY A COLON?
JRST GETNA2 ;YES
SUBI T1,"A"-'A' ;CONVERT TO SIXBIT
TLNE T2,770000 ;DONE MORE THAN 6?
IDPB T1,T2 ;STORE IN NEXT SLOT IN P1
JRST GETNA1 ;LOOP FOR MORE
GETNA2: ILDB T1,CMDB ;GET NEXT CHAR
SKIPN T1 ;MUST BE A BREAK HERE
CPOPJ1: AOS (P) ;GIVE SKIP RETURN
CPOPJ: POPJ P, ; AND RETURN
;ROUTINE TO CHECK FOR A YES/NO RESPONSE.
;RETURN+1 IF NO
;RETURN+2 IF YES
YESNO: PUSHJ P,REDCMD ;READ IN A LINE
ILDB T1,CMDB ;GET CHARACTER
CAIE T1,"Y" ;MUST BE A YES
CAIN T1,"N" ; OR A NO
JRST YESNO1 ;IT IS
OUTSTR [ASCIZ/
%Please respond with a Y or N: /]
JRST YESNO ; AND LOOP
YESNO1: CAIN T1,"Y" ;IF A Y,
AOS (P) ; WE MUST GIVE A SKIP RETURN
POPJ P, ;RETURN
;ROUTINES TO REWRITE A RIB AFTER EITHER SETTING OR CLEARING RIPNDL
;IN RIBSTS. WTNRIB TURNS ON THE BIT, WTFRIB TURNS OFF THE BIT.
;CALL WITH:
; PUSHJ P,WT?RIB
;RETURN+1 IF ERROR
;RETURN+2 IF SUCCESSFUL
WTNRIB: MOVEI T1,RIPNDL ;GET NO DELETE BIT
IORM T1,BUF+RIBSTS ;SET IN RIBSTS
JRST WTXRIB ;JOIN COMMON CODE
WTFRIB: MOVEI T1,RIPNDL ;GET NO DELETE BIT
ANDCAM T1,BUF+RIBSTS ;CLEAR IN RIBSTS
;; JRST WTXRIB ;FALL INTO WTXRIB
WTXRIB: MOVE T1,BUF+RIBSLF ;GET SELF BLOCK NUMBER
PJRST WRTBLK ;WRITE BLOCK AND RETURN
;ROUTINE TO READ THE RIB OF A FILE INTO BUF.
;CALL WITH THE FILE LOOKED UP ON CHANNEL DSK. RETURNS WITH
;THE PHYSICAL UNIT CONTAINING THE RIB OPENED IN SUPER I/O MODE
;ON CHANNEL DISK AND THE RIB IN BUF. THE CALL IS:
; PUSHJ P,REDRIB
;RETURN+1 IF ERRORS
;RETURN+2 IF SUCCESSFUL
REDRIB: USETI DSK,0 ;SET TO READ RIB
STATZ DSK,IO.ERR!IO.EOF ;ERRORS?
POPJ P, ;YES
INPUT DSK,DSKIOW ;READ RIB INTO CORE
STATZ DSK,IO.ERR!IO.EOF ;ERRORS?
POPJ P, ;YES
MOVEI T1,DSK ;GET CHANNEL
MOVEM T1,DSCBLK+.DCNAM ;STORE IN DSKCHR BLOCK
MOVE T1,[.DCUPN+1,,DSCBLK] ;POINT TO IT
DSKCHR T1, ;ASK THE MONITOR WHAT PHYSICAL UNIT
POPJ P, ;FAILED
CLOSE DSK,CL.DAT ;CLOSE, RETURNING CORE BLOCKS
MOVX T1,UU.PHS!.IODMP ;PHYSICAL DEVICE IN DUMP MODE
MOVE T2,DSCBLK+.DCUPN ;GET PHYSICAL UNIT NAME
MOVX T3,0 ;NO BUFFERS
OPEN DSK,T1 ;OPEN CHANNEL
POPJ P, ;FAILED
;; PJRST CHKRIB ;CHECK RIB AND RETURN
;ROUTINE TO CHECK THE RIB FOR CRASH.EXE[1,4] IN BUF TO MAKE SURE IT'S
;OK.
;THE CALL IS:
; PUSHJ P,CHKRIB
;RETURN+1 IF ERRORS
;RETURN+2 IF SUCCESSFUL
CHKRIB: MOVE T1,BUF+RIBNAM ;GET FILENAME
HLRZ T2,BUF+RIBEXT ; AND EXTENSION
CAMN T1,[SIXBIT/CRASH/] ;FILENAME MUST BE CRASH
CAIE T2,'EXE' ;EXTENSION MUST BE EXE
POPJ P, ;FAILED
MOVE T1,BUF+RIBPPN ;GET PPN
MOVE T2,BUF+RIBCOD ;AND UNLIKELY CODE
CAMN T1,[1,,4] ;PPN MUST BE 1,2
CAIE T2,CODRIB ;AND UNLIKELY CODE MUST BE CODRIB
POPJ P, ;FAILED
JRST CPOPJ1 ;RETURN
;ROUTINE TO READ A BLOCK FROM THE DISK INTO BUF. CALL WITH
; T1/BLOCK NUMBER TO READ
;RETURN+1 IF ERRORS DETECTED
;RETURN+2 IF NO ERRORS AND BLOCK IN BUF
REDBLK: MOVEM T1,LSTBLK ;SAVE FOR ERROR MESSAGES
USETI DSK,T1 ;SETUP TO READ THAT BLOCK
STATZ DSK,IO.ERR ;ANY ERRORS?
JRST IOERR ;YES
INPUT DSK,DSKIOW ;READ THE BLOCK
STATO DSK,IO.ERR ;ANY ERRORS?
JRST CPOPJ1 ;NO
JRST IOERR ;GET STATUS AND RETURN NON-SKIP
;ROUTINE TO WRITE A BLOCK FROM BUF TO THE DISK. CALL WITH:
; T1/BLOCK NUMBER TO WRITE
;RETURN+1 IF ERRORS DETECTED
;RETURN+2 IF NO ERRORS AND BLOCK WRITTEN
WRTBLK: MOVEM T1,LSTBLK ;SAVE FOR MESSAGES
USETO DSK,T1 ;SETUP TO WRITE SPECIFIED BLOCK
STATZ DSK,IO.ERR ;ANY ERRORS?
JRST IOERR ;YES
OUTPUT DSK,DSKIOW ;DO THE OUTPUT
STATO DSK,IO.ERR ;ANY ERRORS?
JRST CPOPJ1 ;NO, GIVE SKIP RETURN
IOERR: GETSTS DSK,ERRSTS ;GET STATUS FOR MESSAGE
POPJ P, ;GIVE NON-SKIP RETURN
RELOC
CMDB: BLOCK 1 ;COMMAND BUFFER BYTE POINTER
CMDBUF: BLOCK <^D80/5>+2 ;COMMAND BUFFER
LSTBLK: BLOCK 1 ;LAST BLOCK READ/WRITTEN
ERRSTS: BLOCK 1 ;STATUS ON LAST ERROR
PDL: BLOCK PDLLEN ;PDL
DSCBLK: BLOCK .DCUPN+1 ;DSKCHR BLOCK
FLPBLK: BLOCK .FOLEB+1 ;FILOP. BLOCK
LKPBLK: BLOCK 4 ;LOOKUP BLOCK
DSKIOW: IOWD 200,BUF ;IOWD TO BUF
EXP 0
BUF: BLOCK 200 ;BUFFER
END SDLCNV