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PDP-10.its/src/l/*lisp.154
Lars Brinkhoff e1f80890d4 Add ITS machine called KA.
2018-02-27 06:50:13 -08:00

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;;; -*-MIDAS-*-
;;; **************************************************************
;;; ***** MACLISP ****** LISP INTERPRETER AND SYSTEM *************
;;; **************************************************************
;;; ** (C) COPYRIGHT 1981 MASSACHUSETTS INSTITUTE OF TECHNOLOGY **
;;; ****** THIS IS A READ-ONLY FILE! (ALL WRITES RESERVED) *******
;;; **************************************************************
IFE .OSMIDAS-SIXBIT \TWENEX\,.SYMTAB 17393. ;2001.st prime
.ELSE .SYMTAB 16001. ;1863.rd prime
TITLE ***** MACLISP ****** LISP INTERPRETER AND SYSTEM *************
.NSTGWD ;NO STORAGE WORDS PLEASE UNTIL FIRSTLOC
.XCREF A,B,C,AR1,AR2A,T,TT,D,R,F,P,FXP,%
.MLLIT==1
SUBTTL ASSEMBLY PARAMETERS
IF1,[ ;***** CONDITIONAL ASSEMBLY FLAGS AND PARAMETERS *****
;" FOR ASSLIS - DO NOT PUT ANY OTHER DOUBLE QUOTES ON THIS PAGE
ITS==0 ;1 FOR RUNNING UNDER THE ITS MONITOR
TOPS10==0 ;1 FOR RUNNING UNDER DEC TOPS-10 MONITOR
TOPS20==0 ;1 FOR RUNNING UNDER DEC TOPS-20 MONITOR
SAIL==0 ;1 FOR RUNNING UNDER SAIL MONITOR
TENEX==0 ;1 FOR RUNNING UNDER THE TENEX MONITOR
CMU==0 ;1 FOR RUNNING UNDER THE CMU MONITOR
;LATER WE WILL DEFINE D10==TOPS10\SAIL\CMU AND D20==TENEX\TOPS20
ML==1 ;0 SAYS THIS LISP IS FOR THE OLD AI KA (ONLY IF ITS==1)
BIGNUM==1 ;MULTIPLE PRECISION ROUTINES FLAG
OBTSIZ==777 ;LENGTH OF OBLIST
PTCSIZ==20. ;MINIMUM SIZE FOR PATCH AREA
NEWRD==0 ;NEW READER FORMAT ETC
JOBQIO==1 ;SUPPORT FOR INFERIOR PROCEDURES
HNKLOG==9 ;LOG2 OF SIZE (IN WORDS) OF LARGEST HUNK (0 => NO HUNKS)
PDLBUG==SAIL ;PROCESSOR/OPSYS HAS PROBLEMS WITH PDL OVERFLOWS
SFA==1 ;1 FOR SFA I/O
NIOBFS==1 ;NUMBER OF I/O BUFFERS FOR D10 SYSTEMS
USELESS==1 ;NOT PARTICULARLY IMPORTANT FEATURES, LIKE:
; 1) ROMAN NUMERAL READER AND PRINTER
; 2) PRINLEVEL AND PRINLENGTH
; 3) DOUBLE-PRECISION INPUT OF SINGLE-PRECISION FLONUMS
; 4) CURSORPOS
; 5) GCD
; 6) DUMPARRAYS, LOADARRAYS [AUTOLOADED IN NEWIO]
; 7) RECLAIM, AND RETSP FEATURE WHICH RETURNS BPS CORE TO TS SYSTEM
; 8) PURIFY, AND PURE-INITIAL-READ-TABLE
; 9) CLI INTERRUPT SUPPORT
; 10) MAR-BREAK SUPPORT
; 11) AUTOLOAD PROPERTIES FOR ALLFILES ETC.
; 13) CLEVER TERPRI-BEFORE-THE-PARENS HACK
; 14) HUGE TABLE FOR RANDOM NUMBER GENERATOR
; 15) Exchange A and CONSed hunk
DBFLAG==0 ;1 FOR DOUBLE-PRECISION FLOATING-POINT NUMBERS
CXFLAG==0 ;1 FOR COMPLEX ARITHMETIC
;; IF EITHER THE DBFLAG OR CXFLAG ARE SET, THE THE FLAGS KA, KI, AND KL MUST BE
;; SET. OR ELSE, MAYBE, GO THRU AND REMOVE THEIR USAGE. JONL - 10/16/80
NARITH==0 ;1 FOR NEW ARITHMETIC PACKAGE
;" FOR ASSLIS - DOUBLE QUOTES ARE OKAY NOW
;;; IF1
SUBTTL STORAGE LAYOUTS
;;; STORAGE LAYOUT FOR ITS
;;;
;;; BZERSG 0 - - LOW PAGES
;;; ACCUMULATORS, TEMPORARY VARIABLES,
;;; INITIAL READTABLE AND OBARRAY
;;; BSTSG ST: - - SEGMENT TABLES
;;; BSYSSG FIRSTL: INITIAL SYSTEM CODE (PURE)
;;; BSARSG INITIAL SAR SPACE
;;; BVCSG INITIAL VALUE CELL SPACE
;;; BXVCSG [EXTRA VALUE-CELL SEGMENTS - - POSSIBLY NONE]
;;; BIS2SG SYMBOL-BLOCKS
;;; BSYMSG SYMBOL-HEADERS
;;; BSY2SG **SYMBOL-BLOCKS
;;; BPFXSG **FIXNUMS
;;; BPFSSG **LIST-STRUCTURE
;;; BPFLSG [**FLONUMS - - POSSIBLY NONE]
;;; BIFSSG LIST-STRUCTURE
;;; BIFXSG FIXNUMS
;;; BIFLSG FLONUMS
;;; BBNSG BIGNUMS
;;; BBITSG BIT BLOCKS FOR GC
;;; BBPSSG START OF BINARY PROGRAM SPACE
;;; C(BPSL) (ALLOC IS IN THIS AREA)
;;; V(BPORG) START OF BPS UNUSED FOR PROGRAMS
;;; V(BPEND) ARRAYS START NO LOWER THAN THIS
;;; C(BPSH) LAST WORD OF BPS
;;; ... BINARY PROGRAM SPACE GROWS UPWARD ...
;;; C(HINXM) LAST WORD OF GROSS HOLE IN MEMORY
;;; ... LIST STRUCTURE GROWS DOWNWARD ...
;;; PUSHDOWN LISTS WITH HOLES BETWEEN:
;;; FXP, FLP, P, SP
;;;
;;; C(NPDLL) LOW WORD OF NUMBER PDL (LOW OF FXP)
;;; C(NPDLH) HIGH WORD OF NUMBER PDL + 1 (HIGH+1 OF FLP)
;;;
;;; STORAGE LAYOUT FOR DEC10
;;;
;;; ***** LOW SEGMENT *****
;;; BZERSG 0 - - LOW PAGES
;;; ACCUMULATORS, TEMPORARY VARIABLES,
;;; INITIAL READTABLE AND OBARRAY
;;; BSTSG ST: - - SEGMENT TABLES
;;; BSARSG INITIAL SAR SPACE
;;; BVCSG INITIAL VALUE CELL SPACE
;;; BXVCSG [EXTRA VALUE-CELL SEGMENTS - - POSSIBLY NONE]
;;; BIS2SG SYMBOL-BLOCKS
;;; BSYMSG SYMBOL-HEADERS
;;; BIFSSG LIST-STRUCTURE
;;; BIFXSG FIXNUMS
;;; BIFLSG FLONUMS
;;; BBNSG BIGNUMS
;;; BBITSG BIT BLOCKS FOR GC
;;; PUSHDOWN LISTS:
;;; FXP, FLP, P, SP
;;; C(NPDLL) LOW WORD OF NUMBER PDL (LOW OF FXP)
;;; C(NPDLH) HIGH WORD OF NUMBER PDL + 1 (HIGH+1 OF FLP)
;;; BBPSSG START OF BINARY PROGRAM SPACE
;;; (ALLOC IS IN THIS AREA)
;;; V(BPORG) START OF BPS UNUSED FOR PROGRAMS
;;; V(BPEND) ARRAYS START NO LOWER THAN THIS
;;; C(BPSH) LAST WORD OF BPS (FIXED, SET BY ALLOC)
;;; C(HIXM) HIGH WORD OF EXISTING MEMORY
;;; C(MAXNXM) HIGHEST WORD OF NXM THAT MAY BE USED
;;;
;;; ***** HIGH SEGMENT *****
;;; BSYSSG INITIAL SYSTEM CODE (PURE)
;;; BSY2SG **SYMBOL-BLOCKS
;;; BPFXSG **FIXNUMS
;;; BPFSSG **LIST-STRUCTURE
;;; BPFLSG [**FLONUMS - - POSSIBLY NONE]
;;; BPFSSG INITIAL PURE LIST STRUCTURE
;;; IF1
SUBTTL VARIOUS PARAMETER CALCULATIONS
IFE <.OSMIDAS-<SIXBIT /SAIL/>>, OSD10P==1
IFE <.OSMIDAS-<SIXBIT /CMU/>>, OSD10P==1
IFE <.OSMIDAS-<SIXBIT /TOPS10/>>, OSD10P==1
IFNDEF OSD10P, OSD10P==0
;;; HACK FLAGS AND PARAMETERS
DEFINE ZZZZZZ X,SYM,VAL
IFSE [X]-, PRINTX \* \
.ELSE PRINTX \ \
PRINTX \SYM=VAL
\
TERMIN
PRINTX \ASSEMBLING MACLISP -- INITIAL SWITCH VALUES (*=EXPERIMENTAL):
\
;X=- => EXPERIMENTAL SWITCH
IRPS S,X,[ITS,TOPS10,TOPS20,SAIL,TENEX-CMU-
ML,BIGNUM,OBTSIZ,JOBQIO,HNKLOG,USELESS,
PDLBUG,DBFLAG-CXFLAG-NARITH-SFA-]
ZZZZZZ [X]S,\S
TERMIN
EXPUNGE ZZZZZZ
PRINTC \REDEFINITIONS:
\
.INSRT TTY:
PRINTC \
\
IFNDEF HSGORG,HSGORG==400000
IFN SAIL,[PDLBUG==1] ;SET PDLBUG FLAG
;;; ALL FLAGS WHICH ARE NON-ZERO MUST BE ONES: MUCH CONDITIONAL
;;; ASSEMBLY DOES ARITHMETIC WITH THEM.
IRP FOO,,[ITS,TOPS10,TOPS20,SAIL,TENEX,CMU
ML,BIGNUM,NEWRD,JOBQIO,USELESS
DBFLAG,CXFLAG,NARITH,SFA]
IFN FOO, FOO==:1
.ELSE FOO==:0
TERMIN ;USE OF ==: PREVENTS CHANGING THEM RANDOMLY
;;; CHECK MUTUALLY EXCLUSIVE FLAGS OF WHICH ONE MUST BE SET
DEFINE MUTXOR FLAGS,DEFAULT
ZZZ==0
IRP X,Y,[FLAGS]
ZZZ==ZZZ+X
IRP Z,,[Y]
IFN X*Z, .FATAL BOTH X AND Z SPECIFIED AMONG {FLAGS}
TERMIN
TERMIN
IFE ZZZ,[
PRINTX \NONE OF {FLAGS} SPECIFIED - ASSUMING DEFAULT==:1
\
EXPUNGE DEFAULT
DEFAULT==:1
] ;END OF IFE ZZZ
EXPUNGE ZZZ
TERMIN
ZZZ==
IRP OS,,[ITS,DEC,TWENEX,SAIL,TENEX,CMU]FLAG,,[ITS,TOPS10,TOPS20,SAIL,TENEX,CMU]
IFN FLAG,ZZZ==1
IFE .OSMIDAS-<SIXBIT \OS\>, MUTXOR [ITS,TOPS10,TOPS20,SAIL,TENEX,CMU]FLAG
TERMIN
IFSE ZZZ,,[
IRP OS,,[ITS,DEC,TWENEX,SAIL,TENEX,CMU]FLAG,,[ITS,TOPS10,TOPS20,SAIL,TENEX,CMU]
IFE .OSMIDAS-<SIXBIT \OS\>, FLAG==:1
TERMIN
]
;;; IF1
D10==:TOPS10\SAIL\CMU ;SWITCH FOR DEC-10-LIKE SYSTEMS
D20==:TOPS20\TENEX ;SWITCH FOR DEC-20-LIKE SYSTEMS
IFNDEF PAGING, PAGING==:D20\ITS ;SWITCH FOR PAGING SYSTEMS
IFNDEF HISEGMENT, HISEGMENT==:D10*<1-PAGING> ;ASSUME HISEGMENT FOR DEC-10
;;; INSIST FORCIBLY ALTERS A PARAMETER IF NECESSARY.
DEFINE INSIST COND,SET
COND,[
IRPS X,,[SET]
ZZZ==X
EXPUNGE X
SET
IFN X-ZZZ,[
PRINTX \ COND =>SET
\
]
EXPUNGE ZZZ
.ISTOP
TERMIN
] ;END OF COND
TERMIN
;;; CANONICALIZE BITS
INSIST IFE ITS, JOBQIO==:0
INSIST IFG SAIL*<6-NIOBFS>, NIOBFS==:6
SEGLOG==:11 ;LOG2 OF # OF WORDS PER SEGMENT (WARNING! BUILT INTO NCOMPLR!)
INSIST IFG HNKLOG-SEGLOG, HNKLOG==:SEGLOG-1
OBTSIZ==:OBTSIZ\1 ;MUST BE ODD
DXFLAG==:DBFLAG*CXFLAG
IFE .OSMIDAS-<SIXBIT \ITS\>,[
DEFINE $INSRT $%$%$%
.INSRT $%$%$% >
PRINTX \ ==> INSERTED: \
.TYO6 .IFNM1
PRINTX \ \
.TYO6 .IFNM2
PRINTX \
\
TERMIN
] ;END OF IFE .OSMIDAS-<SIXBIT \ITS\>,
.ELSE,[
DEFINE $INSRT $%$%$%
.INSRT $%$%$%!.MID
PRINTX \INSERTED: \
.TYO6 .IFNM1
PRINTX \.\
.TYO6 .IFNM2
PRINTX \
\
TERMIN
] ;END OF .ELSE
COMMENT | MAKE @ PROGRAM UNDERSTAND POTENTIAL FILE INSERTIONS
;TABS IN FRONT OF $INSRT'S ARE NECESSARY TO FAKE OUT UNIFY PROGRAM
$INSRT ITSDFS
$INSRT DECDFS
$INSRT TNXDFS
$INSRT SAIDFS
$INSRT ITSBTS
$INSRT DECBTS
$INSRT TWXBTS
| ;END OF COMMENT
IFE OSD10P,[
DEFINE A67IFY A,B,C
A=SIXBIT \C\
B=C
TERMIN
RADIX 10.
ZZ==.FVERS
;; Remember, somday cross over to 3000.
IFE .OSMIDAS-<SIXBIT \ITS\>, ZZ==2000.+ZZ
A67IFY LVRNO,LVRNON,\ZZ
RADIX 8
] ;END OF IFE OSD10P
IFN OSD10P,[
IFNDEF LVRNO,LVRNO=.FNAM2
IFE LVRNO-SIXBIT \MID\,[
PRINTX /What is LISP's version number (type four octal digits) ?/
.TTYMAC VRS
LVRNO=SIXBIT \VRS\
LVRNON=VRS
TERMIN
]
.ELSE,[
LVRNO==<LVRNO_-6>+<SIXBIT \1\> ;HACK FOR CROSSING 1000'S
IFN <<LVRNO_-30>&77>-'9, LVRNO==LVRNO+<1_36> ;HACK FOR CROSSING 2000'S
;;; REMEMBER! SOMEDAY WE MAY HAVE TO CROSS TO 3000'S - JONL, 9 JUL 1980
LVRNO==0
] ;END OF IFGE LVRNO
] ;END OF IFN OSD10P
PRINTX \MACLISP VERSION \ ;PRINT OUT VERSION OF THIS LISP
.TYO6 LVRNO
PRINTX \ ASSEMBLED ON \
.TYO6 .OSMIDAS
PRINTX \ AT \
IFE <.SITE 0>, PRINTX \UNKNOWN SITE\
.ELSE REPEAT 20, IFE <.SITE .RPCNT>,[.ISTOP] .TYO6 <.SITE .RPCNT>
PRINTX \
\ ;TERPRI TO FINISH VERSION MESSAGE
;;; IF1
;;; MAKE SURE THE SYMBOLS WE WILL NEED ARE DEFINED.
;;; THEY MAY NOT BE IF ASSEMBLING FOR A DIFFERENT OPERATING SYSTEM
DEFINE FLUSHER DEF/
IRPS SYM,,[DEF]
EXPUNGE SYM
.ISTOP
TERMIN
TERMIN
DEFINE SYMFLS TARGETSYS,OS,.DEFS.,DEFFER,CHKSYM,.BITS.,CHKBIT
IFE <.OSMIDAS-SIXBIT\OS\>,[
IFE TARGETSYS,[
PRINTX \FLUSHING OS SYMBOL DEFINITIONS
\
$INSRT .DEFS.
DEFFER FLUSHER
IFSN .BITS.,,[
PRINTX \FLUSHING OS BIT DEFINITIONS
\
EQUALS DEFSYM,FLUSHER
$INSRT .BITS.
EXPUNGE DEFSYM
] ;END OF IFSN .BITS.
] ;END OF IFE TARGETSYS
] ;END OF IFE <.OSMIDAS-SIXBIT\OS\>
TERMIN
DEFINE SYMDEF TARGETSYS,OS,.DEFS.,DEFFER,CHKSYM,.BITS.,CHKBIT
IFN TARGETSYS,[
IFN <.OSMIDAS-SIXBIT\OS\>,[
PRINTX \MAKING OS SYMBOL DEFINITIONS
\
$INSRT .DEFS.
DEFFER
IFSN .BITS.,,[
PRINTX \MAKING OS BIT DEFINITIONS
\
$INSRT .BITS.
] ;END OF IFSN .BITS.,,
] ;END OF IFN <.OSMIDAS-SIXBIT\OS\>
.ELSE,[
IFNDEF CHKSYM,[
PRINTX \FUNNY - RUNNING ON OS, BUT CHKSYM UNDEFINED; MAKING OS SYMBOL DEFINITIONS
\
$INSRT .DEFS.
DEFFER
] ;END OF IFNDEF CHKSYM
IFSN .BITS.,,[
IFNDEF CHKBIT,[
PRINTX \FUNNY - RUNNING ON OS, BUT CHKBIT UNDEFINED; MAKING OS BIT DEFINITIONS
\
$INSRT .BITS.
] ;END OF IFNDEF CHKBIT
] ;END OF IFSN .BITS.,,
] ;END OF .ELSE
] ;END OF IFN TARGETSYS
TERMIN
;;; IF1
IFN D20, EXPUNGE RESET
IRP HACK,,[SYMFLS,SYMDEF]
HACK ITS,ITS,ITSDFS,.ITSDF,.IOT,ITSBTS,%PIC.Z
HACK TOPS10,DEC,DECDFS,.DECDF,LOOKUP,DECBTS,.GTSTS
HACK TOPS20,TENEX,TNXDFS,.TNXDF,JSYS,TWXBTS,GJ%FOU
HACK TENEX,TENEX,TNXDFS,.TNXDF,JSYS,TWXBTS,GJ%FOU
HACK SAIL,SAIL,SAIDFS,.DECDF,SPCWAR,DECBTS,.GTSTS
TERMIN
;;; CONFLICTS WITH UNLOCKI MACRO AND SEGSIZ VARIABLE
IFN D10,[
IFE SAIL,[
IFN <.OSMIDAS-SIXBIT\CMU\>,[
;THE FOLLOWING ARE THE SPECIAL CMU UUOs:
DEFINE .CMUCL DEF
DEF SRUN=:47000777756
DEF USRDEF=:47000777757
DEF JENAPX=:47000777760
DEF IMPUUO=:47000777761
DEF PRIOR=:47000777762
DEF LNKRDY=:47000777763
DEF INT11=:47000777764
DEF RSTUUO=:47000777765
DEF UNTIME=:47000777766
DEF TIME=:47000777767
DEF STOP=:47000777770
DEF UNLOCK=:47000777771
DEF JENAPR=:47000777772
DEF MSGPOL=:47000777773
DEF MSGSND=:47000777774
DEF DECCMU=:47000777775
DEF CMUDEC=:47000777776
TERMIN
PRINTX \MAKING CMU-SPECIFIC "CALL" DEFINITIONS
\
.CMUCL FLUSHER
.CMUCL
] ;END OF IFN <.OSMIDAS-SIXBIT\CMU\>
] ;END OF IFE SAIL
IFN SAIL, EXPUNGE SEGSIZ
EXPUNGE UNLOCK
] ;END OF IFN D10
IFN D10,[
DEFINE HALT
JRST 4,.!TERMIN
EXPUNGE .VALUE
EQUALS .VALUE HALT
DEFINE .LOSE <A>
JRST 4,.-1!TERMIN
] ;END OF IFN D10
;;; IF1
IFN D20,[
GETTAB==:47_33 41
%TOCID==:1
%TOLID==:2
%TOMVU==:400
%TOMVB==:10000
%TOERS==:40000
%TOOVR==:0
DEFINE HALT
HALTF!TERMIN
EXPUNGE .VALUE
EQUALS .VALUE HALTF
DEFINE .LOSE <A>
HALTF!TERMIN
] ;END OF IFN D20
;;; CALL IS A DEC UUO, BUT WE USE THAT NAME FOR A LISP UUO
EXPUNGE CALL
;;; DON'T HACK THIS $INSRT - UNIFY DEPENDS ON IT
$INSRT FASDFS ;STANDARD AC, UUO, AND MACRO DEFINITIONS
;;; DON'T HACK THIS $INSRT - UNIFY DEPENDS ON IT
$INSRT MACS ;LOTSA MOBY MACROS
SA% LRCT==:NASCII+10 ;SPACE SUFFICIENT FOR CHARS AND SWITCHES
SA$ LRCT==:1010
10$ LIOBUF==:200 ;LENGTH OF STANDARD VANILLA I/O BUFFER
LONUM==400 ;MINIMUM MAGNITUDE OF LOWEST NEGATIVE INUM
HINUM==1000 ;MINIMUM MAGNITUDE OF LARGEST POSITIVE INUM
;SOME CODE ASSUMES HINUM IS AT LEAST 777
;MUCH CODE ASSUMES HINUM IS AT LEAST 177 (FOR ASCII CHARS)
IFN ITS, PAGLOG==:12 ;LOG2 OF PAGE SIZE
; (DAMN WELL BETTER BE 12 FOR ITS!!!
IFN D10, PAGLOG==:11 ; SOME CODE ASSUMES IT WILL BE 11 OR 12)
IFN D20, PAGLOG==:11
IFE D10*PAGING, MEMORY==:<1,,0> ;SIZE OF MEMORY!!!
IFN D10*PAGING, MEMORY==:776000 ;ON D10 SYSTEMS, CAN'T USE ALL OF MEMORY
PAGSIZ==:1_PAGLOG ;PAGE SIZE
PAGMSK==:<777777_PAGLOG>&777777 ;MASKS ADDRESSES TO PAGE BOUNDARY
PAGKSM==:PAGMSK#777777 ;MASKS WORD ADDRESS WITHIN PAGE
NPAGS==:MEMORY/PAGSIZ ;NUMBER OF PAGES IN MEMORY
NNUMTP==:2+BIGNUM+DBFLAG+CXFLAG+DBFLAG*CXFLAG ;NUMBER OF NUMBER TYPES
NTYPES==:3+HNKLOG+1+NNUMTP+1 ;NUMBER OF DATA TYPES, COUNTING RANDOM
;;; IF1
SEGSIZ==:1_SEGLOG ;SEGMENT SIZE
SEGMSK==:<777777_SEGLOG>&777777 ;MASKS ADDRESSES TO SEGMENT BOUNDARY
SEGKSM==:SEGMSK#777777 ;MASKS WORD ADDRESS WITHIN SEGMENT
NSEGS==:MEMORY/SEGSIZ ;NUMBER OF SEGMENTS IN MEMORY
BTBSIZ==:SEGSIZ/40 ;SIZE OF BIT BLOCKS
;(ENOUGH BITS FOR A SEGMENT, 40 PER WORD)
SGS%PG==:NSEGS/NPAGS ;NUMBER OF SEGMENTS PER PAGE
BTSGGS==1 ;GUESS AT THE NUMBER OF INITIAL BIT SEGMENTS
IFN PAGING,[
ALPDL==4096. ;DEFAULT TOTAL PDL SIZES
ALFXP==2048.
ALFLP==1*PAGSIZ
ALSPDL==2048.
] ;END OF IFN ITS+D20
IFE PAGING,[
ALFXP==SEGSIZ ;DEFAULT TOTAL PDL SIZES
ALFLP==SEGSIZ
ALPDL==3000
ALSPDL==1400
] ;END OF IFN D10
;;; GROSSLY DETERMINE MIN AND MAX PARAMETERS FOR EACH SPACE AND PDL
FUMBLE FFS,,[[1,[0.25,40000]]]
FUMBLE FFX,,[[PAGING,[0.2,14000]],[PAGING-1,[0.25,3000]]]
FUMBLE FFL,,[[PAGING,[0.15,2*SEGSIZ]],[PAGING-1,[0.25,SEGSIZ]]]
FUMBLE FFD,IFN DBFLAG,[[1,[0,SEGSIZ]]]
FUMBLE FFC,IFN CXFLAG,[[1,[0,SEGSIZ]]]
FUMBLE FFZ,IFN DXFLAG,[[1,[0,SEGSIZ]]]
FUMBLE FFB,IFN BIGNUM,[[PAGING,[3*SEGSIZ/4,2*SEGSIZ]],[PAGING-1,[0.2,SEGSIZ]]]
FUMBLE FFY,,[[PAGING,[SEGSIZ/2,6000]],[PAGING-1,[SEGSIZ/2,3*SEGSIZ]]]
FUMBLE FFH,IFN HNKLOG,[[1,[0,2*SEGSIZ]]]
FUMBLE FFA,,[[1,[40,SEGSIZ]]]
GRUMBLE PDL,,[[1,[200,1400]]]
GRUMBLE SPDL,,[[1,[100,1400]]]
GRUMBLE FXP,,[[1,[200,1000]]]
GRUMBLE FLP,,[[1,[20,200]]]
;;; IF1
;;; ********** INTERRUPT BITS **********
IFN ITS,[
;;; THESE NAMES SHOULD BE PHASED OUT IN FAVOR OF THE ITS-STANDARD %PI SERIES.
;;; LISP SETS ITS INTERRUPT MASK (.MASK USET VARIABLE) ONLY FROM
;;; THE CONTENTS OF LOCATION IMASK, WHICH INITIALLY CONTAINS STDMSK.
;;; DEPOSITING DBGMSK THERE BEFORE STARTUP DISABLES ALL INTERRUPTS
;;; EXCEPT TTY AND PDL OVERFLOW, SO THAT DDT WILL TRAP ILOP, MPV, ETC.
IB.ALARM==200000,, ; REAL TIME CLOCK (ALARM CLOCK)
IB.TIMER==100000,, ; RUN TIME CLOCK
IB.PARITY==1000,, ;+ PARITY ERROR
IB.FLOV==400,, ; FLOATING OVERFLOW
IB.PURE==200,, ;+ PURE PAGE TRAP (WRITE INTO READ-ONLY)
IB.PCPURE==100,, ;+ PURE INSTRUCTION FETCH FROM IMPURE
IB.SYSUUO==40,, ;+ SYS UUO TRAP
IB.AT3==20,, ; ARM TIP BREAK 3
IB.AT2==10,, ; ARM TIP BREAK 2
IB.AT1==4,, ; ARM TIP BREAK 1
IB.DEBUG==2,, ; SYSTEM BEING DEBUGGED
IB.RVIOL==1,, ;+ RESTRICTION VIOLATION (?)
IB.CLI==400000 ; CORE LINK INTERRUPT
IB.PDLOV==200000 ; PDL OVERFLOW
IB.LTPEN==100000 ; LIGHT PEN INTERRUPT
IB.MAR==40000 ;+ MAR INTERRUPT
IB.MPV==20000 ;+ MEMORY PROTECTION VIOLATION
IB.SCLK==10000 ; SLOW CLOCK TICK (.5 SEC)
IB.1PROC==4000 ;* SINGLE INSTRUCTION PROCEED
IB.BREAK==2000 ;* .BREAK EXECUTED
IB.ILAD==1000 ;+ ILLEGAL USER ADDRESS
IB.IOC==400 ;+ I/O CHANNEL ERROR
IB.VALUE==200 ;* .VALUE EXECUTED
IB.DOWN==100 ; SYSTEM GOING DOWN OR BEING REVIVED
IB.ILOP==40 ;+ ILLEGAL INSTRUCTION OPERATION
IB.DMPV==20 ;+ DISPLAY MEMORY PROTECTION VIOLATION
IB.AROV==10 ; ARITHMETIC OVERFLOW
IB.42BAD==4 ;* BAD LOCATION 42
IB.C.Z==2 ;* ^Z TYPED WHEN THIS JOB HAD TTY
IB.TTY==1 ; INTERRUPT CHAR TYPED ON TTY
] ;END OF IFN ITS
IFN D10,[
IB.PDLOV==AP.POV ; PDL OVERFLOW
IB.MPV==AP.ILM ;+ MEMORY PROTECTION VIOLATION
SA% STDMSK==AP.REN+AP.POV+AP.ILM+AP.NXM+AP.PAR
SA$ STDMSK==<4404,,230000>
] ;END OF IFN D10
;;; ********** I/O CHANNEL ASSIGNMENTS **********
;;; PAGE 376 IS RESERVED FOR COPYING (SEE IP1), AND 377 FOR DISUSE.
;;; (THE DISUSE AS TO DO WITH AN OLD HARDWARE BUG IN BLT.)
;;; ON AI, PAGE 375 IS FOR MAPPING PAGE 0 OF THE DISPLAY SLAVE.
IT$ P6=MEMORY-3*PAGSIZ ;PAGE 0 OF PDP6 SLAVE IS MAPPED INTO PDP-10 MEMORY
] ;END OF IF1
;IFE <ITS+TENEX>*USELESS, NPGTPS==0
IFE 0, NPGTPS==0
TOPN==0
BOTN==0
.XCREF TOPN BOTN
NPURTR==0
NIOCTR==0
.XCREF PURTR1 NPURTR NIOCTR
N2DIF==0
NPRO==0+1 ;NUMBER OF INTERRUPT PROTECTION REGIONS
;NOTE DEFN OF PRO0 IN MACS FILE
.XCREF NPRO
IFN D10,[
HS$ .DECTWO HSGORG ;DEC TWO-SEGMENT RELOC OUTPUT
HS% .DECREL ;ONE SEGMENT ASSEMBLY
IFN PAGING, LOC 140 ;FOR PAGING ASSEMBLY NEED ABSOLUTE ADDRESSING
%LOSEG==-1 ;INITIALLY START IN LOW SEGMENT
%HISEG==0 ;START AT 0 RELATIVE TO HIGH SEG ORIGIN
] ;END OF IFN D10
IFN ITS, IFDEF .SBLK, .SBLK ;EVENTUALLY FLUSH "IFDEF .SBLK"
20$ .DECSAV ;FOR TOPS-20, JUST GET .EXE FILE
20$ LOC 140 ;BUT FORCE ABSOLUTE ADDRESSING
.YSTGWD ;STORAGE WORDS ARE OKAY NOW
FIRSTLOC:
IFN D10,[
HS$ HILOC==.+HSGORG ;HISEG GENERALLY STARTS AT 400000
HS% HILOC==.
;;; FOR DEC-10, FIRSTLOC AS LOADED WITH RELOCATION MUST BE
;;; STDLO+M*SEGSIZ
;;; AND SIMILARLY HILOC WHEN LOADED MUST BE
;;; STDHI+N*SEGSIZ
;;; FOR INTEGRAL M AND N. INIT WILL ENFORCE THIS IN ORDER
;;; TO PRESERVE SEGMENT BOUNDARIES CORRECTLY.
;;; CURSTD IS THE STDXX FOR WHICHEVER IS THE CURRENT SEGMENT.
STDLO==140 ;SIZE OF JOB DATA AREA
STDHI==10 ;VESTIGIAL JOB DATA AREA
CURSTD==STDLO .SEE $LOSEG
] ;END OF IFN D10
IFN PAGING,[
STDLO==0
STDHI==0
CURSTD==0
] ;END OF IFN PAGING
IFN PAGING, BZERSG==0 ;BEGINNING OF "ZERO" SEGMENT(S)
IFE PAGING, BZERSG==FIRSTLOC-STDLO
SUBTTL FIRST LOCATIONS (41, GOINIT, LISPGO); UUO AND INTERRUPT VECTORS
LOC 41
JSR UUOH ;UUO HANDLER
10X WARN [TENEX INTERRUPT VECTOR?]
LOC FIRSTLOC
GOINIT:
IFN ITS,[
.SUSET [.S40ADDR,,[TWENTY,,FORTY]] ;SET .40ADDR
IFN USELESS,[
MOVEI T,IB<MAR> ;RESET THE MAR BREAK FEATURE
ANDCAM T,IMASK
.SUSET [.SAMASK,,T]
.SUSET [.SMARA,,R70]
] ;END OF IFN USELESS
] ;END OF IFN ITS
JSR STINIT
GOINI7: SETZB A,VERRLI ;NULLIFY ERRLIST
PUSHJ P,INTERN
JUMPE A,LISPGO
PUSHJ P,REMOB2 ;GET STANDARD COPY OF NIL ON OBLIST
JRST GOINI7
STINIT: 0 ;COME HERE BY JSR
MOVEI A,READTABLE ;INITIALIZATIONS AT START-UP TIME
MOVEM A,VREADTABLE
MOVE A,[RCT0,,RCT]
BLT A,RCT+LRCT-1 ;RESTORE READ CHARACTER SYNTAX TABLE
MOVEI A,TTYIFA
MOVEM A,V%TYI
MOVEI A,TTYOFA
MOVEM A,V%TYO
MOVEI A,TRUTH
MOVEM A,VINFILE
SETZM VINSTACK
SETZM VOUTFILES
SETZM VECHOFILES
MOVEI A,QTLIST
MOVEM A,VMSGFILES
MOVEI A,OBARRAY
MOVEM A,VOBARRAY ;GET BACK TOPLEVEL OBARRAY
SETZM V%PR1
SETZM VOREAD
SETZM TLF
SETZM BLF ;??
SETZM UNRC.G ;CLEAR STACKED NOINTERRUPT STUFF
SETZM UNRRUN
SETZM UNRTIM
SETZM UNREAR
SETZM TTYOFF
IFN SAIL,[
MOVE P,C2
MOVE FXP,FXC2
] ;END OF IFN SAIL
IFN ITS,[
MOVE TT,[4400,,400000+<<PDLORG_-PAGLOG>_11>]
.CBLK TT,
.VALUE
MOVE TT,[4400,,400000+<<SPDLORG_-PAGLOG>_11>]
.CBLK TT,
.VALUE
MOVE TT,[4400,,400000+<<FXPORG_-PAGLOG>_11>]
.CBLK TT,
.VALUE
MOVE TT,[4400,,400000+<<FLPORG_-PAGLOG>_11>]
.CBLK TT,
.VALUE
] ;END OF IFN ITS
IFN D20,[
;; DECIDE BETWEEN TENEX AND TOPS20 AND SET PAGE ACCESSIBILITYS
JSP R,TNXSET
SKIPN TENEXP
SKIPN VTS20P
JRST .+7
MOVEI 1,.PRIIN
RTMOD
IOR 2,[STDTMW] ;CURRENTLY FORCES DISPLAY MODE, WRAP-AROUND
MOVEM 2,TTYIF2+TI.ST6
MOVEM 2,TTYOF2+TI.ST6
STMOD
] ;END OF IFN D20
IFN D10*<1-SAIL>, JSP T,D10SET
PISTOP
JSP A,ERINIX
JRST 2,@STINIT
;;; HERE IF NOT STOPPING AFTER A SUSPEND
SUSCON: MOVEI A,TRUTH ;RETURN T RATHER THAN NIL
MOVEM A,-1(FLP)
;;; FALL INTO LISPGO
IFN SAIL*PAGING,[
JRST LISPGO ;INTENSE CROCK FOR E/MACLISP INTERFACE!
JSP 10,E.START
] ;END OF IFN SAIL*PAGING
LISPGO:
IFN SAIL*PAGING,[
SETZM VECALLEDP
] ;END OF IFN SAIL*PAGING
SETOM AFILRD ;START HERE ON G'ING
IT$ .SUSET GOL1 ;SET .40ADDR
IT$ .SUSET GOL2 ;GET INITIAL SNAME
JRST 2,@LISPSW ;ZEROS OUT PC FLAGS, AND TRANSFERS TO LISP
IT$ GOL2: .RSNAM,,IUSN ;KEEP THESE ON SAME PHYSICAL PAGE
IT$ GOL1: .S40ADDR,,.+1
IT$ TWENTY,,FORTY
LISPSW: %ALLOC ;ALLOC CLOBBERS TO BE "LISP"
SUSFLS: TRUTH ;NON-NIL MEANS FLUSH SHARABLE PAGES BEFORE SUSPENDING
KA10P: 0 ;NON-ZERO ==> KA PROCESSOR (AS OPPOSED TO KL OR KI)
IFN ITS,[
TWENTY==:20 ;VARIOUS PLACES OFFSET FROM TWENTY ARE USED BY DDT
THIRTY==:TWENTY+10 ;RECALL THAT THE LEFT HALF OF .40ADDR IS THE ".20ADDR"
;;; ADDRESSES IN THE 20 BLOCK, SWIPED FROM DDT ORDER
;;; 25 HOLDS "." DURING A USER TYPEOUT INSTRUCTION
;;; 26 CONDITIONAL BREAKPOINT INSTRUCTION
;;; 27-30 .BREAK 16,'S FOR RETURNING FROM 26
;;; 31 INSTRUCTION FOR BREAKPOINT WHICH DIDN'T BREAK
;;; 32-33 JRST'S TO PROGRAM FROM 31, OR DATA FOR INSTRUCTION IN 31
;;; 34 INSTRUCTION BEING X'D
.SEE MEMERR
.SEE UUOGL2
;;; 35-36 .BREAK 16,'S FOR RETURNING FROM 34
.SEE $XLOST
.SEE UUOGL2
;;; 37 HOLDS Q DURING A USER TYPEOUT INSTRUCTION
.SEE PSYM1
FORTY: 0 ;.40ADDR USER VARIABLE POINTS HERE
JSR UUOGLEEP ;SYSTEMIC UUO HANDLER
-LINTVEC,,INTVEC ;SYSTEMIC INTERRUPT HANDLER
0 ; Let the user hack ITS locks if
0 ; he is so adventurous. -Alan 10/2/83
;;; THAT'S SYSTEMIC, NOT NECESSARILY SYSTEMATIC!!!
;;; ITS PASSES THE BUCK TO THE USER ON UUO'S 0 AND 50-77.
;;; THEY TRAP THROUGH THE .40ADDR, NOT NECESSARILY 40;
;;; SINCE LISP TREATS THESE AS ERRORS, WE CAN AFFORD TO SAVE
;;; THE JPC AND OTHER GOODIES HERE.
UUOGLEEP: 0
.SUSET [.RJPC,,JPCSAV]
JRST UUOGL1
] ;END OF IFN ITS
JPCSAV: 0
SUBTTL SFX HACKERY
;;; SFX MACRO TELLS WHERE A LONG PIECE OF SEMI-CRITICAL (MAY BE QUIT
;;; OUT OF, BUT MUST NOT PERMIT USER INTERRUPTS IN) CODE MAY BE MUNGED
;;; IF INTERRUPTED IN THE MIDDLE SO THAT WHEN DONE IT WILL RETURN TO
;;; THE INTERRUPT HANDLER. SUCH CODE INCLUDES ARRAY SUBSCRIPT
;;; COMPUTATIONS (SINCE AN INTERRUPT COULD DISPLACE THE ARRAY)
;;; AND ALL CODE WHICH MODIFIES THE SPECIAL PDL.
NSFC==0 ;COUNTER FOR MACRO SFX
.XCREF NSFC
IFE PAGING,[
DEFINE SFX A/
SFSTO \.-FIRSTLOC,\NSFC,[A]
NSFC==NSFC+1
A
TERMIN
DEFINE SFSTO PT,NM,IN
DEFINE ZZM!NM
FIRSTLOC+PT
TERMIN
DEFINE ZZN!NM
IN
TERMIN
TERMIN
] ;END OF IFN PAGING
IFN PAGING,[
DEFINE SFX A/
SFSTO \.,\NSFC,[A]
NSFC==NSFC+1
A
TERMIN
DEFINE SFSTO PT,NM,IN
DEFINE ZZM!NM
PT
TERMIN
DEFINE ZZN!NM
IN
TERMIN
TERMIN
] ;END OF IFN PAGING
;;; THE ZZM AND ZZN MACROS ARE EXPANDED AT SFXTBL (Q.V.)
;;; **** ALL USES OF THE SFX MACRO MUST APPEAR ON THIS PAGE ****
SFXPRO
10$ UNBD2A:
10$ POP FXP,R ;Restore R
UNBND2: MOVE TT,(SP)
MOVEM TT,SPSV ;ABOUT LOADING TT WITH SPSV, SEE UNBIND
MOVE TT,UNBND3
SFX POPJ P,
ABIND3: PUSH SP,SPSV
SFX POPJ P,
SETXIT: SUB SP,R70+1
SFX JRST (T)
SPECX: PUSH SP,SPSV
SFX JRST (T)
AYNVSFX: ;XCT'ED BY AYNVER
SFX %WTA (D)
1DIMS: JSP T,AYNV1 ;1-DIM S-EXP ARRAYS COME HERE
ARYGET: ROT R,-1 ;COMMON S-EXP ARRAY ACCESS ROUTINE
ADDI TT,(R)
ARYGT4: JUMPL R,ARYGT8
HLRZ A,(TT)
SFX POPJ P,
ARYGT8: HRRZ A,(TT)
SFX POPJ P,
1DIMF: JSP T,AYNV1 ;1-DIM FULLWORD ARRAYS COME HERE
ANYGET: ADDI TT,(R) ;COMMON FULLWORD ARRAY ACCESS ROUTINE
MOVE TT,(TT)
SFX POPJ P,
IFN DBFLAG+CXFLAG,[
1DIMD: JSP T,AYNV1 ;1-DIM DOUBLEWORD ARRAYS COME HERE
ADYGET: LSH R,1 ;COMMON DOUBLEWORD ARRAY ACCESS ROUTINE
ADDI TT,(R)
KA MOVE D,1(TT)
KA MOVE TT,(TT)
KIKL DMOVE TT,(TT)
SFX POPJ P,
] ;END OF IFN DBFLAG+CXFLAG
IFN DXFLAG,[
1DIMZ: JSP T,AYNV1 ;1-DIM FOUR-WORD ARRAYS COME HERE
AZYGET: LSH R,2 ;COMMON FOUR-WORD ARRAY ACCESS ROUTINE
ADDI TT,(R)
KA MOVE R,(TT)
KA MOVE F,1(TT)
KA MOVE D,3(TT)
KA MOVE TT,2(TT)
KIKL DMOVE R,(TT)
KIKL DMOVE TT,2(TT)
SFX POPJ P,
] ;END OF IFN DXFLAG
NOPRO
SPSV: 0 ;IMPORTANT TO SPECPDL BINDINGS
.SEE $IWAIT
;;; **** THERE MUST BE NO MORE USES OF THE MACRO SFX BEYOND HERE ****
EXPUNGE SFX SFSTO
SUBTTL INTERRUPT FLAGS AND VARIABLES
;;; INTFLG INDICATES WHETHER IN INTERRUPT IS PENDING:
;;; 0 => NO INTERRUPT
;;; -1 => USER INTERRUPT PENDING (STACKED IN INTAR)
;;; -2 => ^X QUIT PENDING, DON'T RESET TTY
;;; -3 => ^G QUIT PENDING, DON'T RESET TTY
;;; -6 => ^X QUIT PENDING, DO RESET TTY
;;; -7 => ^G QUIT PENDING, DO RESET TTY
INTFLG: 0
;;; MAY NOT ^G/^X QUIT OR ALLOW USER INTERRUPTS IF NOQUIT NON-ZERO
;;; NON-ZERO IN LH MEANS GC IN PROGRESS; IMPLIES
;;; PDL POINTERS AND NIL MAY BE CLOBBERED
;;; NON-ZERO ONLY IN RH MEANS PDL POINTERS AND NIL ARE OK
NOQUIT: 0
;;; MAY NOT ALLOW "REAL TIME" INTERRUPTS (CLOCK AND TTY) WHEN
;;; UNREAL IS NON-ZERO. MUNGED BY THE FUNCTION NOINTERRUPT.
;;; 0 => ALL INTERRUPTS OKAY
;;; -1 => NO INTERRUPTS OKAY
;;; 'TTY => ALARMCLOCK OKAY, TTY NOT OKAY
UNREAL: 0
REALLY: 0 ;IF NON-ZERO, THE ADDRESS OF A PDL SLOT FOR THE
;UNBINDER TO UNBIND A SAVED UNREAL INTO.
;SO THAT UNWPR1 CAN KEEP UNREAL SET WHILE BINDING IT.
.SEE WIOUNB
.SEE UNWPR1
ERRSVD: 0 .SEE ERRBAD
;;; INTERRUPT MASK IS ALWAYS INITIALIZED FROM THIS WORD.
;;; FOR ITS, THIS IS THE .MASK (AND .MSK2) WORDS.
;;; FOR TOPS10 AND CMU, THIS IS THE APRENB WORD.
;;; FOR D20, THIS IS THE CHANNEL ENABLE WORD
;;; DEPOSITING DBGMSK INTO IT BEFORE STARTUP CAN AID DEBUGGING.
;;; FOR ITS AND D20, IMPURE LISPS WILL HAVE DEBUG MASKS IN THESE
;;; LOCATIONS; THE PURIFY ROUTINE INSTALLS THE STANDARD MASKS.
.SEE PURIFY
.SEE DBGMSK
IFN D10\D20, OIMASK: 0 ;HOLDS OLD INT MASK WHEN INTS ARE DISABLED
10% INTMSK:
IMASK: STDMSK ;INTERRUPT MASK WORD
IT$ IMASK2: STDMS2 ;ITS HAS TWO INTERRUPT MASKS
LFAKP==5 ;MUST BE LONG ENOUGH FOR USES BY
LFAKFXP==6 ; PDLOV, ERINIT, AND PURIFY
FAKP: BLOCK LFAKP ;FAKE REGPDL, FOR USE BY PDLOV AND ERINIT
FAKFXP: BLOCK LFAKFXP ;FAKE FIXPDL, FOR USE BY PDLOV AND ERINIT
IT$ VALFIX: 0 ;-1 --> VALRET 'STRING' IS REALLY A FIXNUM
IT$ .SEE VALSTR
IFN D10,[
CMUP: 0 ;CMU MONITOR?
IFE SAIL,[
MONL6P: 0 ;6-LEVEL MONITOR OR BETTERP?
] ;END OF IFE SAIL
] ;END OF IFN D10
;;; IF NON-ZERO, THIS CONTAINS THE ADDRESS OF A USER-SUPPLIED
;;; INTERRUPT PROCESSOR. THE LISP SYSTEM INTERRUPT HANDLER
;;; WILL GIVE IT ANY INTERRUPT LISP DOESN'T PROCESS ITSELF. SEE INT0.
UPIINT: 0
IFN D20,[
;;; TOPS-20 INTERRUPT VARIABLES
;;; FLAGS SETUP BY ALLOC AND SUSPEND
CCOCW1: CCOC1 ;This words may be "remodeled" at allocation time, and at
CCOCW2: CCOC2 ; start-up from suspension, to account for 10X/20X differences
TENEXP: 0 ;Also set up as above
VTS20P: 0 ;Non-0 if system has the Virtual Terminal Support
;;; BLOCK OF THREE LOCATIONS IN WHICH THE PC IS STORED ON AN INTERRUPT.
;;; ONE LOCATION FOR EACH OF TOPS-20'S THREE LEVELS
INTPC1: 0
INTPC2: 0
INTPC3: 0
;;; TEMPORARY LOCATIONS USED BY INTERRUPT HANDLERS
PDLSVT: 0 ;USED BY $PDLOV TO SAVE AC T WHILE MUNGING THE INTPDL
SUPSAV: 0 ;USED BY INTSUP
LV2SVT: 0 ;LEVEL 2 PARAMETERS: SAVE T
LV2SVF: 0 ; SAVE F
LV2ST2: 0 ; SECOND SAVE T
LV3SVT: 0 ;LEVEL 3 PARAMETERS: SAVE T
LV3SVF: 0 ; SAVE F
LV3ST2: 0 ; SECOND SAVE T
DSMSAV: . ;POINTER INTO SMALL STACK USED BY DSMINT
BLOCK 10 ;TO BE SAFE, BUT 4 SHOULD BE MAXIMUM DEPTH
IT% CN.ZX: 0 ;WHERE TO EXIT AFTER ^Z
;;; AS TTY INTERRUPT CHANNEL MUST BE DYNAMICALLY ALLOCATED, AND THERE ARE
;;; FEWER CHANNELS THAN THE TOTAL POSSIBLE NUMBER OF INTERRUPT CHARACTERS,
;;; A TABLE IS USED TO STORE THE INFORMATION. THE TABLE IS 18. WORDS LONG.
;;; A ZERO ENTRY IS UNUSED, NONZERO HAS INTERRUPT CHARACTER. IF THE TABLE
;;; ENTRY IS NEGATIVE, THEN THE CHANNEL IS ASSIGNED FOR SOME OTHER USE.
;CHANNEL ASSIGNMENTS FOR NON-STANDARD(?) INTERRUPTS
CINTAB:
TICMAP .TIC!CODE
REPEAT 18.-<.-CINTAB>, 0 ;INITIALLY UNUSED
CINTSZ==.-CINTAB
] ;END IFN D20
SUBTTL DEFINITIONS OF TTY STATUS WORDS
IFN ITS,[
;;; INITIAL TTY STATUS IS AS FOLLOWS:
;;; ACTIVATION CHARS:
;;; ^@-^L, ^N-^Z, ^\-^_, SPACE, < > ( ) { } RUBOUT CR
;;; LBRACKET RBRACKET
;;; INTERRUPT CHARS:
;;; ^@-^H, ^K, ^L, ^N-^Z, ^\-^_, SPACE
;;; ^H AND SPACE DO NOT INTERRUPT
;;; SPACE AND BACKSPACE OUTPUT IN IMAGE MODE, ALL OTHERS IN ASCII.
;;; ALL CHARS ECHO IN PI MODE (ECHO WHEN TYPED), EXCEPT RUBOUT DOESN'T ECHO.
;;;
;;; RECALL THAT THE TWELVE CHARACTER GROUPS ARE:
;;; ^@ ^A-^F ^K-^L ^N-^R ^T-^Z ^RBRACKET ^\ ^^ ^_
;;; A-Z (UPPER CASE), a-z (LOWER CASE)
;;; 0-9
;;; ! " # $ % & ' , . : ; ? @ \ ` | ~
;;; * + - / = ^ _
;;; < > ( ) { } LBRACKET RBRACKET
;;; ^G ^S
;;; ^J ^I
;;; ALTMODE
;;; ^M
;;; RUBOUT
;;; SPACE ^H
.SEE %TG
STTYW1==:232020,,202022 ;STATUS WORDS FOR NORMAL MODE
STTYW2==:232220,,220232
STTYL1==:232020,,202020 ;STATUS WORDS FOR LINE MODE
STTYL2==:212020,,220222
STTYA1==:022222,,222222 ;STATUS WORDS FOR ALLOC
STTYA2==:320222,,020222
] ;END OF IFN ITS
IFN D20,[
;;; Control-Character-Output-Control - two bits for each control character
;;; 0 - ignore,
;;; 1 - print ^X,
;;; 2 - output unmodified,
;;; 3 - simulate format action
RADIX 4
CCOC1==:111111123321131111
CCOC2==:111111111311110000
RADIX 8
; SEE CCOCW1 AND CCOCW1
;;; Four classes of wake-up control
XACTW==:TT%WKF+TT%WKN+TT%WKP+TT%WKA ;FULL WAKE UPS
XACTL==:TT%WKF ;WAKE UPS FOR "LINEMODE"
STDJMW==XACTW+TT%ECO+<.TTASC_6> .SEE TT%DAM
;STANDARD JFN MODE WORD FOR TERMINAL
STDTMW==TM%DPY ;STANDARD TERMINAL MODE WORD, FOR VTS STUFF
STDTIW==0 ;STANDARD TERMINAL INTERRUPT WORD - not really used!
TICMAP {STDTIW==STDTIW+<1_<35-.TIC!CODE>>}
] ;END OF IFN D20
IFN SAIL,[
SACTW1==:777777777370
SACTW2==:030000005000
SACTW3==:000000240000
SACTW4==:000005200000
SACTL1==:775177577370
SACTL2==:000000000000
SACTL3==:000000000000
SACTL4==:000000200000
] ;END OF IFN SAIL
SUBTTL ENTRIES TO VARIOUS ROUTINES CALLED BY JSR
UISTAK: 0 ;STACK UP (ACTUALLY, QUEUE) A USER INTTERRUPT
JRST UISTK1
GCRSR: 0 ;GC RESTORE. CLEANS UP JUST BEFORE AN
JRST GCRSR0 ; ABNORMAL EXIT (GCEND IS NORMAL EXIT).
IFN PAGING,[
PDLSTH: 0 ;"PDL ST HACK". GETS A NEW PAGE FOR A PDL,
JRST PDLST0 ; AND UPDATES ST AND GCST APPROPRIATELY.
IFN D20,[
PDLSTA: 0 ;TEMPS FOR SAVING ACS
PDLSTB: 0
PDLSTC: 0
] ;END OF IFN D20
] ;END OF IFN PAGING
SUBTTL NEWIO I/O CHANNEL ALLOCATION TABLE
;;; ENTRIES:
;;; 4.9 => CHANNEL IS LOCKED FOR A PARTICULAR PURPOSE
;;; 1.1-2.9 => ADDRESS OF FILE ARRAY SAR
;;; IF AN ENTRY IS NON-ZERO BUT ITS FILE ARRAY SAR'S
;;; TTS.CL BIT IS SET, THE CHANNEL MAY BE DE-ALLOCATED.
;;; THIS ORDINARILY HAPPENS ONLY ON A QUIT OUT OF $OPEN.
;;; CHANNEL 0 (TMPC) IS PERMANENTLY LOCKED FOR USE OF THE ERR
;;; DEVICE, FOR UPROBE, ETC. NOTE THAT ITS PUTS .OPEN
;;; AND .CALL FAILURE CODES ON CHANNEL 0 ARBITRARILY.
IFN ITS+D10, LCHNTB==:20 ;NUMBER FIXED BY OPERATING SYSTEM
IFN D20, MAYBE LCHNTB==:40 ;THIS NUMBER IS BASICALLY ARBITRARY
CHNTB:
OFFSET -.
TMPC:: 400000,,NIL ;FIXED TEMPORARY CHANNEL
IFGE LCHNTB-., BLOCK LCHNTB-.
.ELSE WARN [TOO MANY FIXED I/O CHANNELS]
OFFSET 0
;;; DEC-10 I/O BUFFER HEADERS (MUST REMAIN FIXED IN CORE)
;;; THEY ARE NAMED BFHD0, BFHD1, ..., BFHD17.
IFN D10, REPEAT LCHNTB, CONC BFHD,\.RPCNT,: BLOCK 3
DPAGEL: 60. ;INITIAL DEFAULT PAGEL
DLINEL: 70. ;INITIAL DEFAULT LINEL
IFN JOBQIO,[
LJOBTB==10 ;EIGHT INFERIOR PROCEDURES
JOBTB: BLOCK LJOBTB
] ;END OF IFN JOBQIO
SUBTTL INITIAL TTY INPUT FILE ARRAY
-F.GC,,TTYIF2 ;GC AOBJN POINTER
TTYIF1: JSP TT,1DIMS
TTYIFA ;POINTER BACK TO SAR
0 ;ILLEGAL FOR USER TO ACCESS - DIMENSION IS ZERO
TTYIF2:
OFFSET -.
FI.EOF:: NIL ;EOF FUNCTION (??)
FI.BBC:: 0,,NIL ;BUFFERED BACK CHARS
FI.BBF:: NIL ;BUFFERED BACK FORMS
TI.BFN:: QTTYBUF ;PRE-SCAN FUNCTION
FT.CNS:: TTYOFA ;ASSOCIATED TTY OUTPUT FILE
REPEAT 3, 0 ;UNUSED SLOTS
F.MODE:: SA% FBT.CM,,2 ;MODE (ASCII TTY IN SINGLE)
SA$ FBT.CM\FBT.LN,,2
F.CHAN:: -1 ;CHANNEL # (INITIALLY ILLEGAL)
20$ F.JFN:: .PRIIN ;JFN (FOR D20 ONLY)
20% 0
F.FLEN:: -1 ;WE EXPECT RANDOM ACCESS TO BE ILLEGAL
F.FPOS:: 0 ;FILE POSITION
REPEAT 3, 0 ;UNUSED SLOTS
IFN ITS+D10,[
F.DEV:: SIXBIT \TTY\ ;DEVICE
IT$ F.SNM:: 0 ;SNAME (FILLED IN)
10$ F.PPN:: 0 ;PPN (FILLED IN)
F.FN1::
IT$ SIXBIT \.LISP.\ ;FILE NAME 1
10$ SIXBIT \LISP\
F.FN2::
IT$ SIXBIT \INPUT\ ;FILE NAME 2
10$ SIXBIT \IN\
F.RDEV:: BLOCK 4 ;TRUE FILE NAMES
] ;END OF IFN ITS+D10
IFN D20,[
F.DEV:: ASCII \TTY\
] ;END OF IFN D20
LOC TTYIF2+LOPOFA
NTI.WDS==6 ;HOW MANY OF THESE TTY-INPUT WDS?
IFN ITS+D20+SAIL,[
TI.ST1::
IT$ STTYW1 ;TTY STATUS WORDS
20$ CCOC1 ;"REMODELED" AT TXNSET time
SA$ SACTW1
TI.ST2::
IT$ STTYW2
20$ CCOC2 ;"REMODELED" AT TXNSET time
SA$ SACTW2
TI.ST3::
IT$ 0 ;TTY ACTIVATION-CHARACTER WORDS
20$ STDJMW ; (EXCEPT ON ITS -- USUSED THERE)
SA$ SACTW3 ; TWENEX JFN-MODE WORD FOR TTY
TI.ST4::
IT$ 0
20$ STDTIW
SA$ SACTW4
TI.ST5:: 0 ;TTYOPT WORD (STORED IN ITS FORMAT,
; ALTHOUGH READ FROM D20 BY RTCHR
TI.ST6::
20$ STDTMW ;TERMINAL MODE WORD (D20 ONLY)
20% 0
TBLCHK TI.ST1,NTI.WDS
] ;END OF IFN ITS+D20+SAIL
.ELSE BLOCK NTI.WDS
LOC TTYIF2+FB.BUF
FB.BUF:: ;INTERRUPT FUNCTIONS
IFE SAIL,[
NIL,,IN0+^A ;^@ ^A "SIGNAL" ON
IT% QCN.BB,,NIL ;^B ^B-BREAK ^C
IT$ QCN.BB,,IN0+^C ;^B ^B-BREAK ^C GC STAT OFF
IN0+^D,,NIL ;^D GC STAT ON ^E
NIL,,IN0+^G ;^F ^G HARD QUIT
REPEAT 3, NIL,,NIL ;^H-^M (FORMAT EFFECTORS)
NIL,,NIL ;^N ^O
NIL,,NIL ;^P ^Q
IFE D20,[
IT$ IN0+^R,,IN0+^W ;^R UWRITE ON? ^S ^W INT, ^V MACRO
IT% IN0+^R,,NIL ;^R UWRITE ON? ^S
IN0+^T,,NIL ;^T UWRITE OFF? ^U
] ;END OF IFE D20
IFN D20,[
NIL,,NIL ;^R ^S
NIL,,NIL ;^T ^U
] ;END OF IFE D20
IN0+^V,,IN0+^W ;^V TTY ON ^W TTY OFF
IN0+^X,,NIL ;^X SOFT QUIT ^Y
IN0+^Z,,NIL ;^Z GO TO DDT  <ALTMODE>
NIL,,NIL ;^\ CONTROL RIGHT-BRACKET
NIL,,NIL ;^^ ^_
REPEAT <NASCII/2>-<.-FB.BUF>, NIL,,NIL ;ALL OTHERS INITIALLY UNUSED
] ;END IFE SAIL
IFN SAIL,[
REPEAT 100, NIL,,NIL ;ALPHABETIC (ASCII 0 THROUGH ASCII 177)
REPEAT 40, NIL,,NIL ;LOW CONTROL ^<NULL> UP TO ^@ (200-277)
NIL,,IN0+^A ; ^A
QCN.BB,,IN0+^C ;^B ^C
IN0+^D,,NIL ;^D
NIL,,IN0+^G ;^F ^G
REPEAT 3, NIL,,NIL
NIL,,NIL ;^N ^O
NIL,,NIL ;^P ^Q
IN0+^R,,IN0+^W ;^R ^S
IN0+^T,,NIL ;^T
IN0+^V,,IN0+^W ;^V ^W
IN0+^X,,NIL ;^X ^Y
IN0+^Z,,NIL ;^Z
REPEAT 3, NIL,,NIL
QCN.BB,,NIL
NIL,,NIL
NIL,,IN0+^G ;LOWERCASE ^G
REPEAT 11, NIL,,NIL
IN0+^Z,,NIL
REPEAT <NASCII/2>-<.-FB.BUF>, NIL,,NIL
] ;END IFN SAIL
OFFSET 0
SUBTTL INITIAL TTY OUTPUT FILE ARRAY
-F.GC,,TTYOF2 ;GC AOBJN POINTER
TTYOF1: JSP TT,1DIMS
TTYOFA ;POINTER BACK TO SAR
0 ;USER MAY NOT ACCESS, SO SAY DIMENSION IS ZERO
TTYOF2:
OFFSET -.
FO.EOP:: QTTYMOR ;END OF PAGE FUNCTION
REPEAT 3, 0
FT.CNS:: TTYIFA ;STATUS TTYCONS
REPEAT 3, 0
F.MODE:: FBT.CM,,3 ;MODE (ASCII TTY OUT SINGLE)
F.CHAN:: -1 ;CHANNEL # (INITIALLY ILLEGAL)
20$ F.JFN:: .PRIOU ;JFN
20% 0
F.FLEN:: -1 ;NOT RANDOMLY ACCESSIBLE
F.FPOS:: 0 ;FILE POSITION
REPEAT 3, 0
IFN ITS+D10,[
F.DEV:: SIXBIT \TTY\ ;DEVICE
IT$ F.SNM:: 0 ;SNAME (FILLED IN)
10$ F.PPN:: 0 ;PPN (FILLED IN)
F.FN1::
IT$ SIXBIT \.LISP.\ ;FILE NAME 1
10$ SIXBIT \LISP\
F.FN2::
IT$ SIXBIT \OUTPUT\ ;FILE NAME 2
10$ SIXBIT \OUT\
F.RDEV:: BLOCK 4 ;TRUE FILE NAMES
] ;END OF IFN ITS+D10
IFN D20,[
F.DEV:: ASCII \TTY\
] ;END OF IFN D20
LOC TTYOF2+LOPOFA
BLOCK 6
ATO.LC:: 0 ;LINEFEED/SLASH FLAG
AT.CHS:: 0 ;CHARPOS
AT.LNN:: 0 ;LINENUM
AT.PGN:: 0 ;PAGENUM
FO.LNL:: 71. ;LINEL
FO.PGL:: 200000,, ;PAGEL
FO.RPL:: 24. ;"REAL" PAGEL
OFFSET 0
BLOCK <LOPOFA+LONBFA>-<.-TTYOF2>
SUBTTL SUPER-WRITABLE STUFF - MUST BE SAVED UPON USER INTERRUPT
;;; DONT ALLOW USER INTERRUPTS WHILE:
;;; (1) NOQUIT IS NON-ZERO - THIS PROTECTS GC,
;;; RETSP, SUBLIS, AND OTHERS.
;;; (2) INHIBIT IS NON-ZERO - THIS PROTECTS
;;; MANY AREAS OF SEMI-CRITICAL CODE.
;;; (CF. LOCKI AND UNLOCKI MACROS)
;;; (3) UNREAL IS NON-ZERO (DEPENDS ON EXACT VALUE)
;;; - THIS IS FOR THE NOINTERRUPT FUNCTION
SWS::
;;; THE FOLLOWING STUFF IS SAVED WHEN AN "ERRSET FRAME" IS CREATED.
;;; NOT ONLY ERRSET, BUT ALSO CATCH AND READ NEED TO DO THIS.
;;; INTERPRETED PROGS CREATE A SORT OF HALF-ASSED FRAME.
;;; BEWARE! THE COMPILER DEPENDS ON KNOWING THE LENGTH OF
;;; THE ERRSET FRAME AS A CONSTANT PARAMETER.
ERRTN: 0 ;PDL RESTORATION FOR ERRSET
CATRTN: 0 ;PDL RESTORATION FOR CATCH OF A THROW
EOFRTN: 0 ;PDL RESTORATION ON E-O-F TRAPOUT
PA4: 0 ;PDL RESTORATION ON GO OR RETURN
INHIBIT: 0 ;NON-ZERO => INHIBIT (DELAY) ALL USER INTERRUPTS
; -1,,0 => INHIBIT ALL EXCEPT TTY INTERRUPTS
ERRSW: -1 ;0 MEANS NO PRINT ON ERROR DURING ERRSET
; ACTUALLY, "UNREAL" IS STORED IN THE LH OF THIS WORD
; WHEN AND "ERRSET-PUSHED" BLOCK IS PUSHED.
BFPRDP: 0 ;LH: FUNCTION WHICH WANTS TTY PRE-SCAN
; (READ, READLINE)
; TYI FOR ACTIVATION AND CURSORPOS
; CLEVERNESS, BUT NO PRE-SCAN
; NIL FOR NO CLEVERNESS AT ALL
;RH: -1 IF WITHIN READ
CATID: NIL ;RH: CATCH IDENTIFICATION TAG
;LH: FLAGS INDICATING SUBTYPE OF FRAME
CATSPC==400000 ; SPECIAL PROCESSING NEED BE DONE (OTHER BITS HAVE
; MEANING)
CATLIS==200000 ; C(RH) IS POINTER TO A LIST OF CATCH TAGS
CATUWP==100000 ; UNWIND-PROTECT, C(RH) IS FUNCTION
CATCAB==040000 ; CATCH-BARRIER: RH POINTER TO (CONS FUN CATCH-TAGS)
CATALL==020000 ; CATCH-ALL: RH IS FUNCTION OF TWO ARGS
CATCOM==010000 ; FROM COMPILED CODE, DO CALLF, NOT IPROGN
LEP1==.-ERRTN ;***** LENGTH OF SOME OF ERRSET PUSH
KMPLOSES==-<.-ERRSW-1>
.SEE ERSTP
UIRTN: 0 ;NON-ZERO => PDL LOC OF MOST RECENT USER INT FRAME
.SEE UINT0
RSXTB: (A) ;POINTER TO READ SYNTAX TABLE, INDEXED BY A
PNMK1: 0 .SEE PDLNMK ;SAVE TT
GCD.A: .SEE GCDBB
UNBND3: .SEE UNBIND ;SAVE TT
SIXMK2: 0 .SEE SIXMAK
SAVMAR: .SEE SUSP14 ;NEEDN'T BE IN SWS, BUT WHO CARES?
GCD.B: .SEE GCDBB
AUNBD: .SEE AUNBIND ;SAVES D FOR AUNBIND
EXP.S: .SEE EXP ;REMEMBERS SIGN OF ARG
ATAN.S: .SEE ATAN ;SAVES SIGNS OF ARGS <X,,Y>
UNMTMP: ;UNAME TEMP
FPTEM: ;PSYM WANTS THIS TO BE SAME AS PCNT!!!
IFLT9: .SEE IFLOAT ;D SAVED HERE
EQLP: 0 ;PDL POINTER UPON ENTRY TO EQUAL
.SEE EQUAL
GCD.C: .SEE GCDBB
ATAN.X: .SEE ATAN ;TEMPORARY X VALUE
GWDCNT: 0
GCD.D: .SEE GCDBB
ATAN.Y: .SEE ATAN ;TEMPORARY Y VALUE
GWDORG: 0 ;ORIGIN OF LAPPIFICATION - GWDRG1 IS GWDORG-1
GWDRG1: 0
EXPL5: 0 ;TEMP FOR EXPLODE
GCD.UH: .SEE GCDBB
BKTRP: .SEE BAKTRACE
EV0B: .SEE EVAL
FLAT1: .SEE FLATSIZE
MEMV: 0 .SEE MEMBER
UAPOS: ;-1=> UWRITE, >=0 => UAPPEND .ACCESS POS
GCD.VH: .SEE GCDBB
LPNF: ;-1 MEANS NOT A LONG PNAME (FITS IN PNBUF)
.SEE RINTERN
AUNBR: 0 ;SAVES R FOR AUNBIND
DLTC: 0 ;# OF TIMES DELETE/DELQ SHOULD REMOVE ITEM
.SEE DELQ
RINF:
APFNG1:
TABLU1: 0
AUNBF: ;SAVES F FOR AUNBIND
IFE BIGNUM,[
MNMX0: ;"MIN" INSTRUCTION
GRESS0: 0 ;"GREATERP" INSTRUCTION
] ;END OF IFE BIGNUM
IFN BIGNUM,[
GRESS0: 0 ;"MIN" AND"GREATERP" INSTRUCTION
CFAIL: JRST . ;TRANSFER ON FAILURE
CSUCE: JRST . ;TRANSFER ON SUCCEED
] ;END OF IFN BIGNUM
IT$ IOST: .STATUS 00,A
IFN ITS, SYSCL8:
BACTYF: 0 ;ZERO ON FIRST LOOP THROUGH BACTRACE.
BOOLI: SETZB D,TT ;BOOLEAN INSTRUCTION FOR BOOLE
TOPAST: -1 ;IF -1 THEN TOP-LEVEL ASTERISK NOT PRINTED IF VINFILE
; IS INIIFA
IFN USELESS, PRINLV: ;<CURRENT PRINT LEVEL>-1
PLUS0: 0 ;TYPE - QFIXNUM OR QFLONUM
IFE BIGNUM,[
PLUS3: ADD D,TT
PLUS6: FAD D,TT ;FLOAT-POINT INSTRUCTION FOR ARITH GENERATOR
] ;END OF IFE BIGNUM
IFN USELESS, ABBRSW: ;KIND OF STUFF DESIRED FROM PRINT0:
; - => ONLY ABBREV STUFF
; 0 => ONLY NON-ABBREV STUFF
; + => BOTH (DISTINGUISHED BY TYOSW)
PLUS8: 0 ;<N,,N> WHERE THERE ARE N ARGS
RM4: 0
IFN USELESS, PRPRCT: ;PRINT'S PARENS COUNTS (LEFT,,RIGHT)
SWNACK: 0 ;USED FOR WNA CHECKING IN STATUS
JRST STAT1
IFN USELESS, TYOSW: 0 ;NORMALLY ZERO - TELLS TYO TYPE OF CHAR
; + => CHAR IS FOR FILES ONLY
; - => CHAR IS FOR TTY ONLY
; 0 => CHAR IS FOR BOTH FILES AND TTY
RDBKC: 0 ;SAVED BREAK CHARACTER, ON EXIT FROM RDCHAR
RDNSV: 0 ;SAVED NUMBER (BEFORE DECIMAL-OR-NOT IS DECIDED)
RDDSV: 0 ;SAVED VALUE OF # OF DIGITS TO RIGHT OF DECIMAL POINT
RDIBS: 0 ;NUMERIC IBASE DURING READING
IFN USELESS, RDROMP: 0 ;ROMANP - ARE ROMAN NUMERALS OK?
RDINCH: 0 ;SOURCE OF CHARACTERS FOR READ
CORBP: 0 ;BYTE-POINTER FOR READ-SOURCE WHEN SOURCE IS BLOCK OF
;ASCII OR SIXBIT STUFF IN CORE
MKNCH: 0 ;INSTRUCTIION FOR MAKNAM TO GET NEXT BYTE
;;; THE PNAME BUFFER IS USED FOR VARIOUS AND SUNDRY PURPOSES.
;;; THE PRIMARY PURPOSE IS ACCUMULATING PRINT NAMES OF ATOMS.
.SEE RINTERN
;;; IT IS ALSO USED FOR VALRET AND SUSPEND STRINGS,
.SEE VALRET
.SEE SUSPEND
;;; JCL, NAMESTRINGS OF FILES (ESPECIALLY FOR D20 GTJFN JSYS),
.SEE 6BTNS
;;; ERROR MESSAGE STRING PROCESSING,
.SEE ERRIOJ
;;; AND SO ON. FOR SOME PURPOSES THIS BUFFER OVERLAPS THE BIGNUM TEMPS.
20% MAYBE LPNBUF==:10
20$ MAYBE LPNBUF==:50
PNBP: 440700,,PNBUF ;BYTE POINTER FOR PNAME BUFFER
PNBUF: BLOCK LPNBUF
0 ;EXTRA WORD USED TO GUARANTEE THAT A STRING CAN BE MADE ASCIZ
JCLBF==:PNBUF+1 ;SINCE STATUS JCL MAY CALL INTERN ON A SCO
ATMBF==:PNBUF+1 ;DITTO INTERACTION BETWEEN PRINTA AND EXPLODE
IFN BIGNUM,[
REMFL: 0 ;REMAINDER FLAG
VETBL0: 0 ;DIVISION STUFF
DVS1: 0
DVS2: 0
DVSL: 0
DD1: 0
DD2: 0
DD3: 0
DDL: 0
NORMF: 0
QHAT: 0
BNMSV: 0
FACF: 0
FACD: 0
AGDBT: 0
YAGDBT: 0
TSAVE: 0
DSAVE: 0
RSAVE: 0
FSAVE: 0
NRD10FL: 0 ;NOT READING IN BASE 10. FLAG
] ;END OF IFN BIGNUM
IFG JCLBF+24-., BLOCK JCLBF+24-. ;MUST HAVE AT LEAST 24 WDS
LJCLBF==:.-JCLBF
UUOH: ;KEEP THIS UUO STUFF CONTIGIOUS SO THAT GC CAN SAVE IT.
ERROR: 0
JRST UUOH0
ERBDF: ;SOME RANDOM TEMP FOR UUO HANDLER
UUOFN: 0 ;POINTER TO FUNCTION DURING THE UUOH1 LOOP
UUTSV: 0
UUTTSV: 0
UURSV: 0
UUALT9: .SEE UUALT ;DOESN'T CONFLICT WITH UUPSV
UUPSV: 0
UUOBKG: 0 ;IF IN *RSET MODE, PUT STUFF ON PDL
LUUSV==:.-UUOH ;STUFF THAT NEEDS SAVING FOR THE UUO HANDLER
LSWS==:.-SWS ;TOTAL LENGTH OF SUPER-WRITABLE STUFF
JRST UUBKG1
;;; ******** STUFF SAVED UPON USER INTERRUPT ENDS HERE ********
SUBTTL FREE STORAGE LISTS, AND GC AND ALLOC PARAMETERS
;;; ********** FREE STORAGE LISTS **********
;;; THESE ARE USED BY THE VARIOUS CONSERS TO ALLOCATE CELLS OF
;;; THE VARIOUS FREE STORAGE SPACES. NEVER PUT ONE OF THESE IN
;;; A MARKABLE AC (EXCEPT WITHIN A PROPERLY PROTECTED CONSER)!
;;; CAUTION! MUST PRESERVE RELATIVE ORDERING OF
;;; FFS,FFX,FFL,FFD,FFC,FFZ,FFB,FFY,FFH,FFA,FFY2
.SEE GC ;GARBAGE COLLECTOR
FFS: 0 ;LIST FREE STORAGE LIST
FFX: 0 ;FIXNUMS (AND PNAME AND BIGNUM WORDS)
FFL: 0 ;FLONUM WORDS LIST
DB$ FFD: SETZ ;DOUBLE-PRECISION FLONUMS
CX$ FFC: SETZ ;COMPLEX NUMBERS
DX$ FFZ: SETZ ;DOUBLE-PRECISION COMPLEX (DUPLEX)
BG$ FFB: 0 ;BIGNUM HEADERS
FFY: 0 ;SYMBOL (PNAME-TYPE ATOM) HEADERS
HN$ FFH: REPEAT HNKLOG+1, SETZ ;HUNKS
FFA: 0 ;SARS (ARRAY POINTERS)
NFF==:.-FFS ;NUMBER OF FF FROBS
FFY2: SY2ALC ;SYMBOL BLOCKS (EXPLICIT RETURN USED)
;;; SIGN BIT IN FF- MEANS EXEMPT FROM 40-WORD MINIMUM RECLAIMED.
.SEE GCSWH1
.SEE AGC1Q
.SEE GCE0C5
.SEE GCE0C9
.SEE HUNK
;;; PURE FREE STORAGE COUNTERS (NON-POSITIVE, RELATIVE TO EPFF- BELOW)
;;; MUST PRESERVE RELATIVE ORDERING THROUGH NPFFY2
NPFFS: 0 ;LIST
NPFFX: 0 ;FIXNUM
NPFFL: 0 ;FLONUM
DB$ NPFFD: 0 ;DOUBLE
CX$ NPFFC: 0 ;COMPLEX
DX$ NPFFZ: 0 ;DUPLEX
BG$ NPFFB: 0 ;BIGNUM
0 ;NO PURE SYMBOLS
HN$ NPFFH: REPEAT HNKLOG+1, 0 ;HUNKS
0 ;NO PURE SARS
NFFTBCK NPFFS
NPFFY2: 0 ;SYMBOL BLOCKS
;;; ADDRESS OF WORD ABOVE CURRENT PURE SEGMENT FOR EACH SPACE
;;; MUST PRESERVE RELATIVE ORDERING THROUGH EPFFY2
EPFFS: 0 ;LIST
EPFFX: 0 ;FIXNUM
EPFFL: 0 ;FLONUM
DB$ EPFFD: 0 ;DOUBLE
CX$ EPFFC: 0 ;COMPLEX
DX$ EPFFZ: 0 ;DUPLEX
BG$ EPFFB: 0 ;BIGNUM
0 ;NO PURE SYMBOLS
HN$ EPFFH: REPEAT HNKLOG+1, 0 ;HUNKS
0 ;NO PURE SARS
NFFTBCK EPFFS
EPFFY2: 0 ;SYMBOL BLOCKS
EFVCS: BVCSG+NVCSG*SEGSIZ ;END OF CURRENT VC REGION (EFVCS+NFVCS=LAST USED VC)
NFVCP: NXVCSG/SGS%PG ;NUMBER OF EXTRA VC PAGES
FFVC: BFVCS ;VALUE CELL FREELIST (EXPLICIT RETURN USED)
ETVCFLSP: 0 .SEE GCMARK ;EVER-TOOK-VALUE-CELL-FROM-LIST-SPACE-P
;;; GCMKL IS ARRANGED LIKE A PROPERTY LIST: THE "PROPERTY NAMES"
;;; ARE SARS, IN DECREASING ORDER OF POSITION IN ARRAY SPACE,
;;; AND THE "PROPERTY VALUES" ARE FIXNUMS DENOTING THE LENGTHS
;;; OF THE ARRAYS. USED BY GC, RETSP, GRELAR, *ARRAY, AND OTHERS
;;; TO KEEP TRACK OF ARRAYS. NOTE: THE INITIAL OBARRAY AND
;;; READTABLE ARE NOT IN GCMKL SINCE THEY ARE NOT IN BPS.
GCMKL: IGCMKL
;;; PROLIS IS AN ALIST USED TO PROTECT NON-ATOMIC READ-MACRO
;;; FUNCTIONS FROM BEING GC'ED. EACH ITEM ON THE
;;; ALIST IS OF THE FORM (FUN RDT . NUM) WHERE:
;;; FUN IS THE FUNCTION TO BE PROTECTED
;;; RDT IS THE SAR OF THE READTABLE CONCERNED
;;; NUM IS A LISP NUMBER (GUARANTEED NLISP INUM)
;;; <ASCII CHAR VALUE> FOR READ-MACRO FUNCTION
;;; PROLIS IS UPDATED BY SSGCPRO AND SSGCREL.
PROLIS: NIL
;;; VARIOUS RANDOM PARAMETERS FOR GARBAGE COLLECTOR.
;;; MUST PRESERVE RELATIVE ORDER WITHIN GROUPS.
;;; GCMIN PARAMETERS FOR EACH SPACE (FLONUM IFF LH NON-ZERO)
.SEE GCE0C0
MFFS: MINFFS ;LIST
MFFX: MINFFX ;FIXNUM
MFFL: MINFFL ;FLONUM
DB$ MFFD: MINFFD ;DOUBLE
CX$ MFFC: MINFFC ;COMPLEX
DX$ MFFZ: MINFFZ ;DUPLEX
BG$ MFFB: MINFFB ;BIGNUM
MFFY: MINFFY ;SYMBOL
HN$ MFFH: REPEAT HNKLOG+1, MINFFH ;HUNKS
MFFA: MINFFA ;SARS
NFFTBCK MFFS
;;; LENGTH OF FREELISTS <BEFORE,,AFTER>
.SEE GCP4B
NFFS: 0 ;LIST
NFFX: 0 ;FIXNUM
NFFL: 0 ;FLONUM
DB$ NFFD: 0 ;DOUBLE
CX$ NFFC: 0 ;COMPLEX
DX$ NFFZ: 0 ;DUPLEX
BG$ NFFB: 0 ;BIGNUM
NFFY: 0 ;SYMBOL
HN$ NFFH: REPEAT HNKLOG+1, 0 ;HUNKS
NFFA: 0 ;SARS
NFFTBCK NFFS
IFN USELESS*ITS,[
GCWHO: 0 ;VALUE OF (STATUS GCWHO)
;1.1 => DISPLAY MESSAGE DURING GC
;1.2 => CLOBBER .WHO2 WITH GC STATISTICS
GCWHO1: 0 ;SAVED VALUES OF WHO-LINE VARIABLES DURING GC
GCWHO2: 0
GCWHO3: 0
] ;IFN USELESS*ITS
GCACSAV: BLOCK NACS+1 ;MARKED ACS SAVED HERE
GCNASV: BLOCK 20-<NACS+1> ;UNMARKED ACS SAVED HERE
GCP=:GCACSAV+P
GCFLP=:GCACSAV+FLP
GCFXP=:GCACSAV+FXP ;TEST GCFXP FOR NON-ZERO TO DECIDE IF
GCSP=:GCACSAV+SP ; INSIDE GC (IMPLYING REAL PDL POINTERS ARE HERE)
PANICP: 0 ;-1 SAYS WE'RE CLOSE TO RUNNING OUT OF CELLS
GCMRKV: 0 ;NON-NIL MEANS MARK PHASE ONLY
GCTIM: 0 ;GC TIME
GCTM1: 0
GCUUSV: BLOCK LUUSV
IRMVF: 0 ;GCTWA REMOVAL OVERRIDE SWITCH
GCRMV: 0 ;WHETHER TO DO GCTWA REMOVAL
ARPGCT: 4 ;# OF PAGES TO GRAB FREELY FOR ARRAYS BEFORE GC
;;; PARAMETERS RELEVANT TO MEMORY ALLOCATION.
;;; MUST PRESERVE RELATIVE ORDERING OF MOST OF THIS STUFF.
;USED BY GC TO HOLD EXACT CALCULATED INTEGRAL GCMINS
ZFFS: 0 ;LIST
ZFFX: 0 ;FIXNUM
ZFFL: 0 ;FLONUM
DB$ ZFFD: 0 ;DOUBLE
CX$ ZFFC: 0 ;COMPLEX
DX$ ZFFZ: 0 ;DUPLEX
BG$ ZFFB: 0 ;BIGNUM
ZFFY: 0 ;SYMBOL
HN$ ZFFH: REPEAT HNKLOG+1, 0 ;HUNK
ZFFA: 0 ;SARS
NFFTBCK ZFFS
.SEE SSPCSIZE ;SIZE OF EACH SWEEPABLE SPACE. USED TO CALCULATE PERCENTAGE RECLAIMED.
SFSSIZ: NIFSSG*SEGSIZ ;LIST
SFXSIZ: NIFXSG*SEGSIZ ;FIXNUM
SFLSIZ: NIFLSG*SEGSIZ ;FLONUM
DB$ SDBSIZ: 0 ;DOUBLE
CX$ SCXSIZ: 0 ;COMPLEX
DX$ SDXSIZ: 0 ;DUPLEX
BG$ SBNSIZ: NBNSG*SEGSIZ ;BIGNUM
SSYSIZ: NSYMSG*SEGSIZ ;SYMBOL
HN$ SHNSIZ: REPEAT HNKLOG+1, 0 ;HUNKS
SSASIZ: NSARSG*SEGSIZ ;SARS
NFFTBCK SFSSIZ
;SIZES OF SPACES BEFORE START OF GC. COPIED FROM SFSSIZ ET AL. AT START OF GC.
OFSSIZ: 0 ;LIST
OFXSIZ: 0 ;FIXNUM
OFLSIZ: 0 ;FLONUM
DB$ ODBSIZ: 0 ;DOUBLE
CX$ OCXSIZ: 0 ;COMPLEX
DX$ ODXSIZ: 0 ;DUPLEX
BG$ OBNSIZ: 0 ;BIGNUM
OSYSIZ: 0 ;SYMBOL
HN$ OHNSIZ: REPEAT HNKLOG+1, 0 ;HUNKS
OSASIZ: 0 ;SARS
NFFTBCK OFSSIZ
;SIZE FOR EACH SPACE BELOW WHICH TO GRAB NEW SEGMENTS FASTLY
.SEE SGCSIZE ; (I.E. WITHOUT DOING A WHOLE GARBAGE COLLECTION FIRST)
GFSSIZ: MAXFFS ;LIST
GFXSIZ: MAXFFX ;FIXNUM
GFLSIZ: MAXFFL ;FLONUM
DB$ GDBSIZ: MAXFFD ;DOUBLE
CX$ GCXSIZ: MAXFFC ;COMPLEX
DX$ GDXSIZ: MAXFFZ ;DUPLEX
BG$ GBNSIZ: MAXFFB ;BIGNUM
GSYSIZ: MAXFFY ;SYMBOL
HN$ GHNSIZ: REPEAT HNKLOG+1, MAXFFH ;HUNKS
GSASIZ: MAXFFA ;SARS
NFFTBCK GFSSIZ
;;; ROOTS OF THE CHAINS LINKING LIKE PAGES IN THE GARBAGE COLLECTOR
;;; SEGMENT TABLE (GCST). FILLED IN AT INIT TIME.
FSSGLK: 0 ;LIST
FXSGLK: 0 ;FIXNUM
FLSGLK: 0 ;FLONUM
DB$ DBSGLK: 0 ;DOUBLE
CX$ CXSGLK: 0 ;COMPLEX
DX$ DXSGLK: 0 ;DUPLEX
BG$ BNSGLK: 0 ;BIGNUM
SYSGLK: 0 ;SYMBOL
HN$ HNSGLK: REPEAT HNKLOG+1, 0 ;HUNKS
SASGLK: 0 ;SARS
NFFTBCK FSSGLK
S2SGLK: 0 ;THIS MUST FOLLOW THOSE ABOVE! (SYMBOL BLOCKS)
BTSGLK: 0 ;LINKED LIST OF BIT BLOCKS
IMSGLK: 0 ;LINKED LIST OF UNALLOCATED IMPURE SEGMENTS (INIT SETS UP)
PRSGLK: 0 ;LINKED LIST OF UNALLOCATED PURE SEGMENTS
10$ SVPRLK: 0 ;SAVED PRSGLK WHEN HISEG GETS PURIFIED
PG$ LHSGLK: 0 ;LINKED LIST OF BLOCKS FOR LH HACK
BTBAOB:
PG$ -<NBITSG*SEGSIZ/BTBSIZ>+NBITB,,BFBTBS_<5-SEGLOG>
PG% -<NBITSG*SEGSIZ/BTBSIZ>+NBITB,, .SEE IN10S5
MAINBITBLT: BFBTBS-1 ;END ADDRESS FOR BLT OF MAIN BIT BLOCK AREA
GC98: 0 ;RANDOM TEMP FOR GC
GC99: 0 ;RANDOMER TEMP FOR GC
.SEE SPURSIZE ;SIZE OF PURE FREE STORAGE AREAS - USED MAINLY BY STATUS,
.SEE LDXQQ2 ; BUT ALSO RANDOMLY USED BY DEC-10 FASLOAD INTO HISEG
PFSSIZ: NPFSSG*SEGSIZ ;LIST
PFXSIZ: NPFXSG*SEGSIZ ;FIXNUM
PFLSIZ: NPFLSG*SEGSIZ ;FLONUM
DB$ PDBSIZ: 0 ;AIN'T NO INITIAL PURE DOUBLES, SONNY!
CX$ PCXSIZ: 0 ;AIN'T NO INITIAL PURE COMPLICES, MAMA!
DX$ PDXSIZ: 0 ;AIN'T NO INITIAL PURE DUPLICES, DADDY!
BG$ PBNSIZ: 0 ;AIN'T NO INITIAL PURE BIGNUMS, BABY!
0 ;AIN'T NEVER NO PURE SYMBOLS!
HN$ PHNSIZ: REPEAT HNKLOG+1, 0 ;HUNKS (YOU GOTTA BE KIDDING!)
0 ;AIN'T NEVER NO PURE SARS NEITHER!
NFFTBCK PFSSIZ
PS2SIZ: NSY2SG*SEGSIZ ;SYMBOL BLOCKS
;;; ********** HAIRY PARAMETERS HACKED BY ALLOC **********
BPSH: ;BINARY PROG SPACE HIGH
PG% 0 ;FILLED IN BY ALLOC
PG$ <<ENDLISP+PAGSIZ-1>&PAGMSK>-1
BPSL: BBPSSG ;BINARY PROG SPACE LOW
IFN PAGING,[
HINXM: 0 ;ADDRESS OF LAST WORD OF NXM HOLE
] ;END OF IFN PAGING
IFE PAGING,[
HIXM: 0 ;ADDRESS OF LAST WORD OF LOW SEGMENT
MAXNXM: 0 ;HIGHEST USABLE WORD OF NXM ABOVE LOW SEGMENT
HBPORG: ENDHI ;FIRST AVAILABLE WORD OF HISEG FOR LOADING BINARY PROGRAMS
HBPEND: IF1,[0] IF2,[HILOC+<<ENDHI-HILOC-STDHI+PAGSIZ-1>&PAGMSK>-1]
] ;END OF IFE PAGING
;;; THESE TWO VALUES ARE USED FOR A QUICK-AND-DIRTY PDL NUMBER CHECK.
.SEE PDLNMK
.SEE SPECBIND ;AND OTHERS
NPDLL: 0 ;LOW END OF NUMBER PDL AREA
NPDLH: 0 ;HIGH END OF NUMBER PDL AREA
IFN PAGING,[
PDLFL1: 0 ;FOR FLUSHING PDL PAGES - SEE ERINIT
PDLFL2: 0 ;FOR UPDATING ST - SEE ERINIT
] ;END OF IFN PAGING
;;; THE NEXT FEW THINGS MUST BE IN THIS ORDER
.SEE SSGCMAX ;MAXIMUM SIZES FOR STORAGE SPACES
XFFS: 0 ;LIST
XFFX: 0 ;FIXNUM
XFFL: 0 ;FLONUM
DB$ XFFD: 0 ;DOUBLE
CX$ XFFC: 0 ;COMPLEX
DX$ XFFZ: 0 ;DUPLEX
BG$ XFFB: 0 ;BIGNUM
XFFY: 0 ;SYMBOL
HN$ XFFH: REPEAT HNKLOG+1, MAXFFH ;HUNKS
XFFA: 0 ;SARS
NFFTBCK XFFS
IFN PAGING,[
;;; THE NEXT FOUR THINGS MUST BE IN THIS ORDER
XPDL: MAXPDL ;MASTER PDL POSITIONS TO GIVE
XFLP: MAXFLP ; PDL-LOSSAGE INTERRUPTS AT
XFXP: MAXFXP
XSPDL: MAXSPDL
;;; THE NEXT FOUR THINGS MUST BE IN THIS ORDER
ZPDL: MAXPDL ;ACTUAL PDL POSITIONS FOR LOSING
ZFLP: MAXFLP ;INITIALIZED AT ERINIT FROM XPDL ET AL.
ZFXP: MAXFXP ; AND DIDDLED BY PDLOV AT OVERFLOW TIME
ZSPDL: MAXSPDL
] ;END OF IFN PAGING
;;; THE NEXT FOUR THINGS MUST BE IN THIS ORDER
C2: -PAGSIZ+NACS+1+2,,PDLORG-1 ;STANDARD REG PDL PTR
FLC2: -PAGSIZ+2,,FLPORG-1 ;STANDARD FLO PDL PTR
FXC2: -PAGSIZ+2,,FXPORG-1 ;STANDARD FIX PDL PTR
SC2: -PAGSIZ+1+2,,SPDLORG ;STANDARD SPEC PDL PTR
;SC2 IS INITIALIZED TO ONE SLOT HIGHER THAN MIGHT BE EXPECTED
; IN ORDER TO ACCOMMODATE A ONE-SLOT OVERPOP IN SOME PLACES.
.SEE ERRPOP
ZSC2: SPDLORG ;SC2 WITH ZERO LEFT HALF
;;; THE NEXT FOUR THINGS MUST BE IN THIS ORDER
OC2: 0 ;ABS LIMITS FOR PDLS
OFLC2: 0
OFXC2: 0
OSC2: 0
SUBTTL RANDOM VARIABLES IN LOW CORE
;; Fast XCT'd cells for UUOLINK snapping
USRHNK: 0 ;Either 0 or CALL instruction: is this a special hunk?
SENDI: 0 ;Either 0 or CALL instruction: send msg to user's hunk
ICALLI: 0 ;Either 0 or CALL instruction: Apply user's hunk
;;; I GUESS THIS STUFF NEED NOT BE CONSIDERED SACRED
;;; SPACE FOR ALL CHANNELS AND INFERIORS AND USELESS INTS AND GC OVERFLOWS
MAYBE LINTAR==20+10*JOBQIO+5*USELESS+NFF
INTAR: 0 ;INDEX INTO INTERRUPT ARRAY (FIFO QUEUE)
BLOCK LINTAR ;ENTRIES OF FORM <INT #,,ARG FOR INT FN>
; RIGHT HALVES ARE PROTECTED BY GC
;;; ENOUGH FOR ALL CHANNELS AND INFERIORS AND USELESS INTS AND GC OVERFLOWS
MAYBE LUNREAR==20+10*JOBQIO+5*USELESS+NFF
UNRC.G: 0 ;-2/-3 FOR DELAYED ^X/^G INTERRUPT
IFN USELESS, UNRCLI: 0 ;ENTRY FOR DELAYED CLI INTERRUPT
IFN USELESS, UNRMAR: 0 ;ENTRY FOR DELAYED MAR INTERRUPT
UNRRUN: 0 ;ENTRY FOR DELAYED RUNTIME ALARMCLOCK
UNRTIM: 0 ;ENTRY FOR DELAYED REAL TIME ALARMCLOCK
UNREAR: 0 ;INDEX INTO "REAL TIME" INTERRUPT QUEUE
BLOCK LUNREAR ;ENTRIES OF FORM <ARG FOR INT FN,,INT #>
;ARGS IN UNREAR NEED NO GC PROTECTION
.SEE NOINTERRUPT
;;; INTERRUPT PDL
LIPSAV==:10 ;LENGTH OF CRUD PUSHED BY INTERRUPT
IPSWD1==:-7 ;WORD ONE (.PIRQC) INTERRUPTS TAKEN
IPSWD2==:-6 ;WORD TWO (.IFPIR) INTERRUPTS TAKEN
IPSDF1==:-5 ;SAVED .DF1
IPSDF2==:-4 ;SAVED .DF2
IPSPC==:-3 ;SAVED PC
IPSD==:-2 ;SAVED ACCUMULATOR D
IPSR==:-1 ;SAVED ACCUMULATOR R
IPSF==:0 ;SAVED ACCUMULATOR F
SA% MXIPDL==4 ;MAX SIMULTANEOUS INTERRUPTS
SA$ MXIPDL==10. ; (CALCULATED FROM THE DEFER WORDS
; IN THE INTERRUPT VECTOR):
; 1 MISCELLANEOUS
; 2 PDL OVERFLOW
; 1 MEMORY ERROR/ILLEGAL OP
LINTPDL==LIPSAV*MXIPDL+1 .SEE PDLOV
INTPDL: -LINTPDL,,INTPDL .SEE INTVEC
;EXTRA ROOM FOR ONE INTPDL OVERFLOW AND RESULTING EXTRA INTERRUPT
BLOCK LINTPDL+2*LIPSAV .SEE PDLOV
IT$ IOCINS: 0 ;USER IOC ERROR ADDRESS
IT$ .SEE IOCER8
IFN D10,[
IFN SAIL,[
;SAIL ONLY DEFINITIONS
ACBASE==:20 ;WHERE SAIL MONITOR SAVES USER ACS UPON INT
INTMAI==:004000,,000000 ;MAIL INTERRUPT
INTPAR==:000400,,000000 ;PARITY ERROR
INTCLK==:000200,,000000 ;CLOCK INTERRUPT
INTTTI==:000004,,000000 ;<ESCAPE>I INTERRUPT
INTPOV==:000000,,200000 ;PDL OV
INTILM==:000000,,020000 ;ILL MEMORY REF
INTNXM==:000000,,010000 ;NON EXISTANT MEMORY
] ;END IFN SAIL
REEINT: BLOCK 1
REENOP: BLOCK 1
APRSVT: BLOCK 1
REESVT: BLOCK 1
] ;END IFN D10
IFN D10+D20,[
INTALL: BLOCK 1
;FUDGE BIT DEFINITIONS FOR VARIOUS ITS PI BITS
;LEFT HALF BITS
SA$ %PIMAI==:4000,,
%PIPAR==:1000,,
%PIWRO==:200,,
;RH BITS
%PIMPV==:20000
%PIILO==:40
] ;END IFN D10+D20
;;; LH OF MUNGP => GC IS IN PROCESS OF USING MARK BITS
;;; IN SARS OR SYMBOLS
;;; RH OF MUNGP => ALIST IS IN PROCESS OF USING LH'S OF
;;; VALUE CELLS FOR SPECPDL HACKERY
;;; ERINIT CHECKS MUNGP AND ATTEMPTS TO RESTORE THINGS IF
;;; NECESSARY. THIS SHOULD HAPPEN ONLY IN THE CASE OF SOME
;;; GROSS BUG LIKE A MEMORY VIOLATION.
MUNGP: 0
;;; VARIABLES NEEDED FOR ERRPOP
ERRPAD: 0 ;SAVE RETURN ADDRESS
ERRPST: 0 ;SAVE T OVER UNWPRO
;;; TEMPORARIES FOR FASLOAD
BFTMPS::
SQ6BIT: 0 ;TEMPORARIES FOR SQUEEZE
SQSQOZ: 0
LDBYTS: 0 ;WORD OF RELOCATION BYTES
LDOFST: 0(TT) ;LOAD OFFSET (RELOCATION FACTOR = VALUE OF BPORG BEFORE LOAD)
LDAAOB: 0 ;AOBJN INDEX FOR ATOMTABLE ARRAY
LDTEMP: ;RANDOM TEMPORARY
LD6BIT: 0 ;PLACE TO ACCUMULATE SIXBIT WHILE CONVERTING FROM SQUOZE
; - FIRST 6 BITS OF NEXT WORD MUST BE ZERO
LDAPTR: 0(TT) ;WILL BE AN INDIRECT POINTER FOR ACCESSING THE ATOMTABLE
LDBPTR: 0(F) ;WILL BE AN INDIRECT POINTER FOR ACCESSING THE I/O BUFFER
LDF2DP: 0 ;.FNAM2-DIFFERENT-P
; (NON-ZERO --> FASLAP'S LDFNM2 DIFFERS FROM CURRENT FASLOAD'S)
LDASAR: 0 ;ADDRESS OF SAR FOR FASLOAD'S ATOMTABLE ARRAY
LDBSAR: 0 ;ADDRESS OF SAR FOR FASLOAD'S I/O BUFFER ARRAY
IFE PAGING,[
LDXBLT: 0 ;BLT POINTER FOR ZAPPING CALLS FOR XCTS IN BPS
LDXSIZ: 0 ;0=XCT HACKERY NEVER DONE, -1=DONE AND PURIFIED,
; N>0=LENGTH (IN WORDS) OF AREA FOR XCTED CALLS
LDXSM1: 0 ;CONTAINS 1 LESS THAN LDXSIZ, AND RETAINS VALUE AFTER
; LDXSIZ BECOMES -1
LDXDIF: 0(D) .SEE LDPRC6
;RH WILL CONTAIN DIFFERENCE BETWEEN RH AND LH OF LDXBLT
] ;END IFE PAGING
LDHLOC: 0 ;HIGHEST LOC ASSEMBLED INTO + 1
LDEOFJ: 0 ;JUMP ADDRESS FOR END OF FASLOAD INPUT FILE
10$ LDEOFP: 0 ;USED FOR EOF HANDLING IN FASLOAD FOR D10
LFTMPS==:.-BFTMPS ;NUMBER OF FASLOAD TEMPORARIES
IFN PAGING,[
;MULTIPLE XCT SEGMENTS ASSEMBLY TIME PARAMETERS
;DESCRIPTION OF SEGMENT FORMAT:
;LDXPNT POINTS TO FIRST IMPURE SEGMENT IN THE CHAIN. THE RH OF LDXPSP
; WORD IN EACH SEGMENT IS THE POINTER TO THE PURIFIABLE SEGMENT ATTACHED
; TO THE IMPURE SEGMENT, AND THE LH OF LDXPSP IS THE POINTER TO THE NEXT
; SEGMENT OR 0 IF NO MORE SEGMENTS IN CHAIN. LDXLPC IS THE -COUNT OF THE
; NUMBER OF SLOTS FREE IN THE CURRENT SEGMENT. THE CURRENT SEGMENT IS THE
; ONE POINTED TO BY LDXLPL. IF LDXLPC IS >= 0, IT IS POSSIBLE THAT THE PURE
; SEGMENT ATTACHED TO C(LDXLPL) IS ACTUALLY PURE, AND THUS MAY NOT BE WRITTEN
; INTO. IF LDXPNT IS 0, THE DATABASE IS COMPLETELY INVALID.
; THE SEGMENT SIZE USED IS THE DEFAULT SEGMENT SIZE DEFINED BY SEGLOG AND
; SEGSIZ. IF LDXPFG IS -1, THEN A PURIFICATION HAS BEEN DONE. THIS FLAG IS
; USED SOLELY FOR (STATUS UUOLINKS). AN EMPTY SLOT IS ZERO IN BOTH THE PURE
; AND IMPURE SEGMENT. THE FIRST WORD THAT IS USED FOR DATA IN EACH SEGMENT
; IS LDXOFS. THIS IS COMPUTED SUCH THAT THE LAST WORD OF DATA IS ACTUALLY THE
; LAST WORD OF THE SEGMENT.
;HASHING VALUES
IFE SEGLOG-8.,[LDHSH1==:251.
LDHSH2==:241.]
IFE SEGLOG-9.,[LDHSH1==:509.
LDHSH2==:503.]
IFE SEGLOG-10.,[LDHSH1==:1019.
LDHSH2==:1021.]
LDX%FU==:90. ;WHAT PERCENTAGE FULL ANY PAGE IS ALLOWED TO GET
;THIS MUST BE LOCATION ZERO!
LDXPSP==:0 ;NEXT SEGMENT IN CHAIN,,PURE SEGMENT POINTER
LDXOFS==:SEGSIZ-LDHSH1-1 ;OFFSET OF FIRST WORD OF UUOLINKS
LDXPNT: 0 ;POINTER TO XCT PAGES
LDXLPC: 0 ;COUNT OF WORDS REMAINING ON LAST PAGE USED
LDXLPL: 0 ;STARTING LOCATION OF LAST PAGE USED
LDXHS1: 0 ;FIRST HASH VALUE
LDXHS2: 0 ;SECOND HASH VALUE
LDXPFG: 0 ;-1 WHEN PURIFIED
] ;END IFN PAGING
IT$ IUSN: 0 ;INITIAL USER SNAME - SET BY LISPGO
USN: BLOCK 2 ;USER SYSTEM NAME
EVPUNT: TRUTH ;DON'T EVAL FUNCTION ATOM
IFN D10,[
UWUSN: 0 ;UWRITE SNAME (I.E. PPN)
D10PTR: 0 ;AOBJN POINTER FOR DEC BUFFERS..
D10ARD: -200,,. ;I/O WORD FOR ARRAY DUMP AND FASL
0
D10NAM: 0 ;THIS WORD ;WILL BE ###LSP WHERE ###=JOB NR
D10REN: BLOCK 2 ;FILE NAME TO
] ;END OF IFN D10
IT% SYMLO: 0 ;LOW BOUNDARY FOR DDT'S SYMBOL TABLE
IFN SAIL,[
;DEFINE SOME EXTRA TTY RELATED BITS
%TXTOP==:4000 ;"TOP" KEY.
%TXSFL==:2000 ;"SHIFT-LOCK" KEY.
%TXSFT==:1000 ;"SHIFT" KEY.
%TXMTA==:400 ;"META" KEY.
%TXCTL==:200 ;"CONTROL" KEY.
%TXASC==:177 ;THE ASCII PART OF THE CHARACTER.
] ;END IFN SAIL
IT$ %TXSFL==:0 ;"SHIFT-LOCK" KEY DOESN'T EXIST ON ITS
RDOBJ8: RD8N ;OR RD8W FOR WHITE'S + HAC
ALGCF: 0 ;FLAG TO STOP THE GC WHILE IN ALLOC
AFILRD: -1 ;-1 => NO INIT FILE, >0 => CDR OF ALLOC COMMENT
GNUM: ASCII \G0000\ ;INITIAL GENSYM
;;; RANDOM STUFF FOR RANDOM NUMBER GENERATOR
;;; RNOWS, RBACK, AND RBLOCK MUST BE IN THAT ORDER.
IFN USELESS,[
MAYBE LRBLOCK==:71. ; 71 35
MAYBE ROFSET==:35. ;X +X +1 IS IRREDUCIBLE MOD 2 (ASK MACSYMA!)
] ;END OF IFN USELESS
IFE USELESS,[
MAYBE LRBLOCK==:7 ; 7 3
MAYBE ROFSET==:3 ;SO ALSO IS X +X +1 IRREDUCIBLE MOD 2
] ;END OF IFE USELESS
RNOWS: 0 .SEE INIRND ;INITIALIZED AT INIT TIME
RBACK: 0 .SEE SSRANDOM ;CAN BE RESTORED BY (SSTATUS RANDOM ...)
RBLOCK: BLOCK LRBLOCK .SEE RANDOM ;71. WORDS OF "RANDOM"NESS
RNTN2: .(T) ;CURRENT PNBUF WORD FOR COMPARE ON INTERN
;;; VARIABLES FOR ARRAY ALLOCATOR
BPPNR: 0 ;<SIZE OF ARRAY HEADER>,,-<SIZE OF ARRAY DATA>
GAMNT: 0 ;NUMBER OF WORDS REQUIRED, ON A CALL TO GETSP
GSBPN: 0 ;USED AS TEMPORARY BPEND WHILE BLT'ING DOWN ARRAYS
ADDSAR: 0 ;ADDRESS OF SPECIAL ARRAY CELL WHEN MAKIN ARRAY
TOTSPC: 0 ;<# OF ARRAY DIMS>,,<TOTAL SPACE NEEDED FOR ARRAY>
LLIP1: 0 ;<LARGEST LEGAL INDEX OF ARRAY>+1
INSP: 0 ;PSEUDO-PDL POINTER FOR ARRAY-ING
RTSP1: 0
RTSP3: 0
LOSEF: 77 ;LAP OBJECT STORAGE - EFFICIENCY FACTOR. FOR (STATUS LOSEF) = N,
;THERE WILL BE <1_N>-1 STORED HERE. SIZE OF GC PROTECTION ARRAY
OLDSXHASHP: TRUTH ;IF = (), THEN USE NEW STYLE SXHASH,
RWG: 0 ;IF = 0, THEN CREATE ERROR ON DIVIDE BY ZERO,
;OR FLOATING OVFLO ON CONVERSION OF BIGNUM
FLOV9A: 0 ;RANDOM TEMPS FOR FLOATING POINT
FLOV9B: 0 ; OVERFLOW INTERRUPT HANDLER
CPJSW: 0 ;IF NOT ZERO, THEN *RSET WAS ON, AND BAKTRACE WILL FIND MUCH
;INFORMATION FROM THE [FUN,,CPOPJ] TYPE STUFF ON THE PDL
PSYMF: 0 ;NON-ZERO DURING EXECUTION OF PSYM.
POFF: 0 ;VARIOUS ROUTINES INVOLVING $X'S FROM DDT DO JSR'S HERE
JRST PSYM1
PSMS: BLOCK 20 ;THIS SHOULD BE ENOUGH FOR LPSMTB
BLOCK 3
PSMTS: 0
PSMRS: 0
IT$ SQUOZE 0,. ;FOR A .BREAK 12,[4,,PS.S-1]
PS.S: 0 .SEE PSYM1
STQLUZ: 0 ;FOR SETQING NIL OR T - REMEMBER WHICH ONE OVER INTWAIT
NOPFLS: 0 ;NON-ZERO => PURIFY$G SHOULDN'T FLUSH PDLS
SAWSP: -1 ;SCREW-AROUND-WITH-SHARING-P: -1 SAYS WE MUS READ
; OUR CORE IMAGE IN FROM A "PURQIO" FILE
20$ PSYSP: -1 ;PURIFY-SYSTEM-PAGES -1 SAYS YES
ALVRNO: ASCIZ \0\ ;ASCII string with LISP version number -- set up
; at INITIALIZE time.
IFN ITS,[
PURDEV: 0 ;PDUMP FILE DEVICE NAME
PURFN1: 0 ;PDUMP FILE FN1
PURFN2: 0 ;PDUMP FILE FN2
PURSNM: 0 ;PDUMP FILE SNAME
SYSDEV: SIXBIT \SYS\
SYSFN1: SIXBIT \PURQIO\
SYSFN2: LVRNO
SYSSNM: SIXBIT \SYS\
] ;IFN ITS
SA$ FAKDDT: HALT ;FOR FAKING OUT THE WORLD
MAYBE LSJCLBUF==10 ;ENOUGH FOR 40. CHARS
SJCLBUF: 0 ;FIRST WORD HOLD NUMBER OF CHARS BUFFERED
BLOCK LSJCLBUF
0 ;INSURES THAT ILDBS WILL FINALLY SEE A ZERO
SUBTTL INITIAL READTABLE, OBARRAY (IN LOW CORE)
;;; INITIAL READ SYNTAX TABLE IN FORM OF AN ARRAY
-1,,0 ;IN NEWIO, WILL POINT TO MACRO CHAR LIST
RSXTB1: PUSH P,CFIX1
JSP TT,1DIMF
READTABLE
0
RCT: BLOCK LRCT-2 ;WHICH IS BLT'D IN FROM RCT0
TRUTH,,0 ;(STATUS TTYREAD),,(STATUS ABBREVIATE)
NIL,,TRUTH ;(STATUS TERPRI),,(STATUS _)
;;; INITIAL OBLIST IN FORM OF ARRAY
-<OBTSIZ+1>/2,,IOBAR2
IOBAR1: JSP TT,1DIMS
OBARRAY
OBTSIZ+1+200
IOBAR2: BLOCK <OBTSIZ+1>/2
BLOCK 200/2 ;SINGLE CHAR OBJS TABLE (CREATED AS NEEDED)
SUBTTL PURTBL AND IPURIFIY
;;; PURE PAGE TABLE
;;; CONTAINS TWO BITS FOR EACH PAGE, 16 PAGES PER TABLE WORD
;;; MEANING OF BITS: 00=NXM 01=IMPURE
;;; 10=PURE 11=SPECIAL HACKERY NEEDED
IFN PAGING,[
PURTBL:
IF1,[
BLOCK NPAGS/20
IFN NPAGS&17, BLOCK 1
] ;END IF1
IF2,[
ZZW==. ;DARN WELL BETTER BE SAFE OVER THE FOLLOWING MESS!
.BYTE 2
ZZZ==0
$==3 ;FOR HAIRY PRINTOUT TO WORK
PRINTX \
INITIAL PURTBL MEMORY LAYOUT
[0=NXM, 1=IMPURE, 2=PURE, $=BPS/PDL/SCRATCH]
\
NLBTSG==0
NHBTSG==0
IFN LOBITSG, NLBTSG==NBITSG
.ELSE, NHBTSG==NBITSG
;;; IN THE IRP BELOW, COMMAS AND CR'S MARK GUARANTEED PAGE BOUNDARIES
IRP SPCS,,[ZER+LBT,ST,SYS,SAR+VC,XVC,IS2+SYM+XXA,XXZ,SY2+PFX+PFS+PFL+XXP
IFS+IFX+IFL+BN+XXB,HBT,BPS,NXM,FXP,XFXP,FLP,XFLP,P,XP
SP,XSP,SCR]BITS,,[1,1,2,1,0,1,0,2,1,1,$,0,$,0,$,0,$,0,$,0,$]
ZZX==0
IRPS SPC,,[SPCS]
ZZX==ZZX+N!SPC!SG
TERMIN
REPEAT ZZX/SGS%PG,[
BITS
ZZZ==ZZZ+1
IFE ZZZ&17,[
0
0
]
PRINTX \BITS\
IFE <ZZZ#10>&17, PRINTX \ \
IFE <ZZZ#20>&37, PRINTX \ \
IFE ZZZ&37,[
PRINTX \
\
]
] ;END OF REPEAT
TERMIN
.BYTE
IFN ZZZ-NPAGS,[
WARN \ZZZ,[=WRONG LENGTH FOR PURTBL (SHOULD BE ]\NPAGS,[)]
LOC ZZW
BLOCK NPAGS/20
IFN NPAGS&17, BLOCK 1
] ;END OF IFN ZZZ-NPAGS
PRINTX \
\
] ;END IF 2
] ;END OF IFN PAGING
.SEE PURIFY ;PURIFY ENTERS HERE
FPURF7: MOVSI F,2000 ;THIS BIT CONVERTS CALL TO CALLF, JCALL TO JCALLF
MOVEI T,VPURCL
PUSH P,T
FPURF1: HRRZ T,(T) ;CDR DOWN THE PURLIST
FPUR1Q: JUMPE T,POP1J
FPUR1A: HLRZ AR2A,(T)
PUSHJ P,LDSMSH ;TRY TO SMASH
JRST FPURF4 ;WIN
IORM F,(AR2A) ;LOSE - MAKE IT A CALLF/JCALLF
FPURF4: HRRZ T,@(P) ;WIN, SO CUT IT OUT OF PURCLOBRL
HRRZ T,(T)
HRRM T,@(P)
JRST FPUR1Q
IFN USELESS,[
IP0: ;PURIFY/DEPURIFY SOME PAGES
IFN D10, JRST (R) ;C HAS FLAG, NON-NULL MEANS PURIFY
IFN D20+ITS,[
LSH D,-PAGLOG ;CALLED BY JSP R,IP0
LSH TT,-PAGLOG ;USES B,C,T,TT,D,F
CAIGE TT,1
LERR [SIXBIT \1ST PAGE NOT PURE!\]
MOVEI B,(TT) ;FIGURE OUT PURTBL BYTE POINTER
IFN ITS,[
ROT B,-4
ADDI B,(B)
ROT B,-1
TLC B,770000
ADD B,[450200,,PURTBL]
SUBI D,-1(TT) ;CALCULATE NUMBER OF PAGES
IMULI TT,1001
TRO TT,400000 ;SET UP ARG FOR .CBLK20$ MOVSI 1,.FHSLF
SKIPN C
TLOA TT,400
SKIPA C,R70+2 ;IN PURTBL, 1=IMPURE, 2=PURE
MOVEI C,1
IP7: .CBLK TT, ;HACK PAGE
JSP F,IP1 ;IP1 HANDLES LOSSES
ADDI TT,1001
] ;END OF IFN ITS
IFN D20,[
ROT TT,-4
ADDI TT,(TT)
ROT TT,-1
TLC TT,770000
ADD TT,[450200,,PURTBL]
SUBI D,-1(B) ;CALCULATE NUMBER OF PAGES
HRRI 1,(TT)
HRLI 1,.FHSLF
MOVSI 2,(PA%RD+PA%EX)
SKIPN C
TLOA 3,(PA%CPY)
SKIPA F,R70+2
MOVEI F,1
IP7: SPACS
ADDI 1,1
ADDI 2,1
] ;END OF IFN D20
TLNN B,730000 ;FOR BIBOP, DEPOSIT BYTE IN PURTBL
TLZ B,770000
IT$ IDPB C,B
20$ IDPB F,TT
SOJN D,IP7
JRST (R)
IFN ITS,[
IP1: MOVE T,[4400,,<776000+<SFA*1000>>];ASSUME FAILURE WAS DUE TO SHARING
.CBLK T, ;USES ONLY T,TT
.LOSE 1000+%ENACR ;NO CORE AVAILABLE
LDB T,[111000,,TT]
LSH T,PAGLOG+22
HRRI T,<376+SFA>*PAGSIZ ;SO COPY PAGE INTO SOME FAKE PAGE
BLT T,<376+SFA>*PAGSIZ+1777 ;LIKE PAGE NUMBER 376
MOVE T,TT
ANDCMI T,377
IORI T,376+SFA
.CBLK T, ;MOVE PAGE MAP FOR 376 INTO LOSING PAGE POSITION
.LOSE
MOVEI T,376000+<SFA*1000>
.CBLK T, ;FLUSH ENTRY FOR PAGE 376
.LOSE
JRST (F)
] ;END OF IFN ITS
] ;END OF IFN ITS+D20
] ;END OF IFN USELESS
SUBTTL START-UP CODE, AFTER A FLUSHING SUSPEND
;NOTHING ON THIS PAGE IS FLUSHED WHEN/IF LISP'S PURE PAGES ARE CLEARED FROM
; CORE DURING A SUSPEND
IFN PAGING,[
NFLSS::
FLSTBL:
IF1, BLOCK <<777777_-SEGLOG>+1>/36.
IF2,[
.BYTE 1
IRP SPCS,,[ZER+LBT,ST,SYS,SAR+VC,XVC,IS2+SYM+XXA,XXZ,SY2+PFX+PFS+PFL+XXP
IFS+IFX+IFL+BN+XXB,HBT,BPS,NXM,FXP,XFXP,FLP,XFLP,P,XP
SP,XSP,SCR]BITS,,[1,1,2,1,0,1,0,2,1,1,$,0,$,0,$,0,$,0,$,0,$]
ZZX==0
IRPS SPC,,[SPCS]
ZZX==ZZX+N!SPC!SG
TERMIN
REPEAT ZZX/SGS%PG,[
IFE BITS-2, 1 ;GENERATE A FLUSH ENTRY IF PURE
.ELSE, 0 ; ELSE PAGE SHOULD NOT BE FLUSHED
]
TERMIN
.BYTE
BLOCK <<777777_-SEGLOG>+1>/36.-<.-FLSTBL>
] ;END OF IF2
] ;END OF IFN PAGING
IFN D20,[
ENTVEC: JRST LISPGO ;TOPS-20 ENTRY VECTOR
JRST CTRLG
0 ;TO BE FILLED IN WITH VERSION NUMBER IN
; BITS 4.6 - 3.7
] ;END OF IFN D20
IFN ITS\D20,[
FLSPA1: ASCIZ \:Job Suspended
\
FLSPA3: ASCIZ \:LISP pure pages flushed, and job Suspended
\
FLSDIE:
DEFINE FLDIMSG A
ASCIZ \:LOSE!! Cannot find file with pure pages for the LISP which this job was dumped from (version !A!).
\
TERMIN
FLDIMSG \LVRNON
SUSP4:
IFN ITS,[
.CALL PURCHK
.VALUE FLSDIE ; DIE, DIE, DIE IF NO SYSTEM PAGES
JUMPE TT,.-1
JRST SUSP3A
] ;END OF IFN ITS
IFN D20,[
MOVEI A,BSYSSG_-<SEGLOG+SGS%PG-1>
HRLI A,.FHSLF
RPACS
TLNE B,(PA%PEX)
JRST SUSP3A
HRROI 1,FLSDIE
PSOUT
JRST .-2
] ;END OF IFN D20
FLSSTARTUP:
JSP TT,SHARP1 ;BEFORE STARTING MUST HAVE A REAL CORE IMAGE
JRST SUSP4
SUSP3A: SETZM SAWSP ;WE HAVE ALREADY MAPPED OURSELVES IN
] ;END OF IFN ITS\D20
;;; HERE ON STARTUP AGAIN AFTER SUSPENSION
IFN SAIL*PAGING,[
JSP 10,E.START
] ;END OF IFN SAIL*PAGING
SUSP3:
20$ RESET ;RESET OURSELVES ON STARTUP
IFN SAIL*PAGING,[
SETZM VECALLEDP
] ;END OF IFN SAIL*PAGING
IFN D10\D20 JSP F,JCLSET ;GOBBLE DOWN ANY JCL
MOVE NIL,GCNASV+1 ;RESTORE IMPORTANT AC'S
MOVE T,[GCNASV+2,,FREEAC]
BLT T,17
SETZB A,B ;CLEAR OUT GARBAGE
SETZB C,AR1
SETZ AR2A,
SKIPN (FLP) ;RESTORE FXP UNLESS JCL WAS NIL
MOVE FXP,(FXP)
MOVNI T,1 ;AOBJN ON -1 LEAVES [1,,0] ON A KA10
AOBJN T,.+1 ; BUT [0] ON A KL OR KI
MOVEM T,KA10P
IFN ITS\D20,[
MOVE T,GCNASV
MOVEM T,LISPSW
JSP T,SHAREP ;RE-READ PURE PAGES IF EVERYTHING IS IN ORDER
] ;END OF IFN ITS\D20
IFN ITS,[
.SUSET [.ROPTION,,TT]
TLO TT,OPTINT+OPTOPC ;NEW-STYLE INTERRUPTS AND NO PC SCREWAGE
.SUSET [.SOPTION,,TT]
.SUSET [.SDF1,,R70]
.SUSET [.SDF2,,R70]
.SUSET [.SMASK,,IMASK]
.SUSET [.SMSK2,,IMASK2]
IFN USELESS,[
MOVE T,IMASK
TRNE T,%PIMAR
.SUSET [.SMARA,,SAVMAR]
] ;END OF IFN USELESS
] ;END OF IFN ITS
IFN D20,[
MOVEI T,CTRLG ;RESTORE "CONTINUE" ADDRESS
HRRM T,ENTVEC+1
JSP R,TNXSET ;MUST BE DONE BEFORE PION
] ;END OF IFN D20
IFN D10,[
MOVE T,GCNASV
HRRM T,.JBSA"
HLRM T,.JBREN
SA% JSP T,D10SET
] ;END OF IFN D10
PION
JSP T,PPNUSNSET
SETZM NOPFLS
HRRZS NOQUIT
PUSHJ P,OPNTTY ;*** TEMP CROCK?
JFCL
PUSHJ P,UDIRSET
POPI FLP,1 ;REMOVE NIL VALRET FLAG
POP FLP,A ;RESTORE RETURN VALUE
POPJ P,
NOSHARE==JRST (T) ;DEPOSIT INTO SHAREP TO INHIBIT SHAREING
SHAREP: SKIPN SAWSP
JRST (T)
SETZM SAWSP
IFN ITS,[
.CALL PURCHK
.VALUE
JUMPL TT,(T) ;NEGATIVE IF FIRST SYSTEM PAGE IS WRITEABLE
] ;END OF IFN ITS
JSP TT,SHARP1
JFCL ;IGNORE CASE OF LOST PURQIO FILE
JRST (T)
SHARP1:
IT% JRST (TT)
IT% WARN [HOW TO SHARE WITH "PURQIO" FILE?]
IFN ITS,[
.CALL SYSFIL ;GET SYSTEM FILE AND SHARES - SKIP IF WIN
JRST (TT)
.CALL SHRLOD ;LOAD ALL PURE PAGES FROM THE FILE
.LOSE 1400
.CLOSE TMPC,
JRST 1(TT)
SHRLOD: SETZ
SIXBIT \LOAD\
MOVEI %JSELF ;MYSELF
MOVEI TMPC ;CHANNEL ON WHICH PURQIO/PURBIB IS OPEN'ED
SETZI 0 ;LOAD ONLY PURE PAGES
] ;END OF IFN ITS
FLSLSP:
20$ JRST FLSNOT
IFN ITS,[
.CALL SYSFIL ;IN ORDER TO FLUSH PAGES, WE MUST BE CERTAIN
JRST FLSNOT ; THAT WE CAN GET OURSELVES BACK!
.CLOSE TMPC,
.CALL PURCHK ;ONLY FLUSH IF LISP IS PURE
.VALUE
JUMPLE TT,FLSNOT
SETOM SAWSP ;FLAG THAT WE MUST READ OURSELVES FROM THE FILE
MOVE T,[440100,,FLSTBL] ;POINTER INTO TABLE OF WHICH PAGES TO FLUSH
SETZI TT, ;KEEP PAGE NUMBER IN TT
FLSPA4: ILDB R,T ;GET INFO ON THIS PAGE
JUMPE R,FLSPA5 ;SKIP IF NOT FLUSHABLE
CAIE TT,NFLSS/PAGSIZ ;NEVER FLUSH THE PAGES WE ARE ON
CAIN TT,NFLSE/PAGSIZ
JRST FLSPA5
.CALL FLSPA6 ;ELSE FLUSH THE PAGE FROM OUR PAGE MAP
.LOSE 1400
FLSPA5: CAIGE TT,777777/PAGSIZ ;LOOP UNTIL HIGHEST PAGE NUMBER
AOJA TT,FLSPA4
.SUSET FLSMSK ;MAKE SURE NO INTERRUPTS TRY TO HAPPEN
PUSHJ P,PDUMPL ;PURE DUMP LISP IF SO DESIRED
SKIPE (FLP) ;NIL JCL?
JRST SUSCON ;NOPE, RETURN T AND PROCEED
SKIPE TT,(FXP) ;CHECK IF VALRET STRING
JRST FLSVAL ;YES, MUST VALRET IT THEN
MOVE T,FXP
SUB T,FLSADJ
MOVEM T,(FXP)
.VALUE FLSPA3 ;PRINT SUSPENSION MESSAGE
JRST SUSCON ;CONTINUING AFTER A SUSPEND
FLSVAL: SKIPN VALFIX ;IS VALRET STRING REALLY A FIXNUM?
JRST FLSVA1 ;NO, USE NORMAL VALRET
HRRZ T,1(TT) ;PICKUP THE VALUE
.BREAK 16,(T) ;DO THE .BREAK
JRST SUSCON ;CONTINUE WHEN IT RETURNS, BUT RETURN T
FLSVA1: .VALUE 1(TT)
JRST SUSCON ;ON PROCEED, RETURN T
FLSADJ: 1,,1
FLSMSK: .SMASK,,.+1
0,,0
FLSPA6: SETZ
SIXBIT \CORBLK\
MOVEI 0 ;FLUSH THE PAGE
MOVEI %JSELF ;FROM OURSELVES
SETZ TT ;PAGE NUMBER IN TT
PURCHK: SETZ
SIXBIT \CORTYP\ ;GET TYPE FOR CORE BLOCK
1000,,BSYSSG/PAGSIZ ;THAT FIRST SYSTEM PAGE IS ON
402000,,TT ;>0 READ-ONLY, < 0 WRITABLE, = 0 NON-EXISTENT
SYSFIL: SETZ ;FOR OPENING UP FILE TO SHARE
SIXBIT \OPEN\
SYSCHN
SYSDEV
SYSFN1
SYSFN2
SETZ SYSSNM
SYSCHN: .UII,,TMPC
] ;END OF IFN ITS
;ROUTINE TO PDUMP A FILE WITH INDIRECT SYMBOL TABLE POINTER INCLUDED
IT% PDUMPL: POPJ P,
IFN ITS,[
PDUMPL: SKIPN PURDEV ;DID THE GUY WANT PURE DUMPING?
POPJ P, ;NOPE, RETURN RIGHT AWAY
.CALL PUROPN ;OPEN THE FILE FOR PDUMP'ING
.LOSE 1400 ;THE GUY LOST, OH WELL, WE ARE PROBABLY IN
; A SUSPEND ANYWAY
SETZ T, ;PDUMP REQUIRES AN INITALLY ZERO STATE WORD
.CALL PDUMP ;DO THE ACTUAL PDUMP
.LOSE 1400
.IOT TMPC,PURSTI ;OUTPUT START INSTRUCTION
.IOT TMPC,PURISP ;INDIRECT SYMBOL TABLE POINTER INDICATOR
MOVE TT,PURPTR ;POINTER TO FILENAMES
MOVE T,PURISP ;START CHECKSUM
PURCKS: ROT T,1
ADD T,(TT) ;AND CHECKSUM FOR DDT
.IOT TMPC,(TT) ;ALSO OUTPUT THE WORD TO THE FILE
AOBJN TT,PURCKS
.IOT TMPC,T ;OUTPUT THE CHECKSUM
.IOT TMPC,PURSTI ;THEN AGAIN THE START ADR
.CALL PURRWO ;RENAME TO CORRECT FILENAME
.LOSE 1400
.CLOSE TMPC, ;FINISH UP WITH THE FILE
POPJ P,
PUROPN: SETZ
SIXBIT \OPEN\
PURCHN
PURDEV
PUROP1
PUROP2
SETZ PURSNM
PUROP1: SIXBIT \.LISP.\
PUROP2: SIXBIT \OUTPUT\
PURRWO: SETZ
SIXBIT \RENMWO\
MOVEI TMPC
PURFN1
SETZ PURFN2
PDUMP: SETZ
SIXBIT \PDUMP\
MOVEI %JSELF
MOVEI TMPC
SETZ T
PURCHN: .UIO,,TMPC
PURSTI: JRST LISPGO
PURISP: -4,,2
PURPTR: -4,,SYSDEV
] ;END OF IFN ITS
PG$ NFLSE:
SUBTTL KILHGH AND GETHGH
IFN SAIL,[
E.START:
SETOM E.PHANTOM
MOVEM 7,VEJOBNUM
MOVEM 0,E.FIL
MOVEM 1,E.EXT
MOVEM 3,E.PPN
MOVEM 6,E.DEV
MOVE A,VT.ITY
MOVEM A,VECALLEDP
JRST 1(10) ;RETURN + 1
E.PHANTOM: 0
E.FIL: SIXBIT \ EINIT\
E.EXT: SIXBIT \INI\
E.PPN: 0
E.DEV: SIXBIT \DSK\
] ;END OF IFN SAIL
IFN HISEGMENT,[
IFE SAIL,[
KILHG4: OUTSTR [ASCIZ \
;Not flushing high segment - can't find .SHR file
\]
KILHG2: MOVEI A,KILHG3 ;THIS SHOULD BE START ADR IF NOT KILLING HS
HRRM A,.JBSA
MOVE 0,SGANAM ;IMPORTANT INFO INTO ACS IN CASE OF CONTINUE
MOVE 11,SGADEV
MOVE 7,SGAPPN
EXIT 1, ;SUSPEND FOR A WHILE
KILHG3: MOVEM 0,SGANAM
MOVEM 11,SGADEV
MOVEM 7,SGAPPN
JRST RETHGH
] ;END IFE SAIL
KILHGH: MOVEI A,GETHGH ;KILL HIGH SEGMENT
HRRM A,.JBSA" ;SET START ADDRESS
IFE SAIL,[
SKIPN SUSFLS
JRST KILHG2
SKIPE SGANAM ;CAN'T FLUSH HIGH SEGMENT IF WE
SKIPN SGADEV ; DON'T KNOW WHEREFROM TO RETRIEVE IT
JRST KILHG4
MOVSI A,1
CORE A, ;FLUSH HIGH SEGMENT
JFCL
KILHG1:
] ;END OF IFE SAIL
IFN SAIL,[
SKIPE SUSFLS
SKIPN SGANAM
JRST KILHG1
MOVEI A,FAKDDT ;FOO, HOW MANY WAYS CAN SAIL LOSE?
SKIPN .JBDDT ; JOBDDT MUST BE NON-ZERO TO SAVE!
SETDDT A, ; OTHERWISE MAY FAIL TO SAVE ENTIRE LOSEG
SETZ A,
CORE2 A, ;FLUSH HIGH SEGMENT
HALT ;HOW CAN WE POSSIBLY LOSE? (HA HA)
JRST KILHG2
KILHG1: SKIPL .JBHRL
JRST KILHG2
MOVEI A,1
SETUWP A,
HALT
KILHG2:
] ;END OF IFN SAIL
EXIT 1, ;"CONTINUE" WILL FALL INTO GETHGH
IFN SAIL,[
JSP 10,E.START
] ;END OF IFN SAIL
GETHGH:
IFE SAIL,[
MOVEI A,A+1 ;SET UP TO GET HIGH SEG BACK
MOVE A+1,SGADEV
MOVE A+2,SGANAM
MOVE A+3,SGAEXT
MOVEI A+4,0
MOVE A+5,SGAPPN
SKIPE SGANAM
SKIPN SGADEV
JRST GETHG1
GETSEG A, ;GET HIGH SEGMENT
JRST GLSLUA
GETHG1:
] ;END OF IFE SAIL
IFN SAIL,[
JRST .+5 ;DAMN RPG STARTUP ON SAIL
RESET
CLRBFI
JRST .+2
RESET
SKIPE .JBHRL
JRST GETHG1
MOVE T,SGANAM
ATTSEG T,
SKIPA TT,SGADEV
JSP FREEAC,CHKHGH
MOVEI T,.IODMP ;ON FAILURE, LOCK THE SHR FILE, THEN TRY AGAIN,
SETZ D, ; AND ON FAILING MAKE THE HISEG OURSELVES
OPEN TMPC,T ;OPEN UP .SHR FILE DEVICE IN DUMP MODE
HALT ;SOME MORON GAVE LOSING SECOND ARG TO SUSPEND?
MOVE T,SGANAM
MOVE TT,SGAEXT
SETZ D,
GETSTS TMPC,R ;GET CHANNEL STATUS WORD
TRO R,1000 ;FAST READ-ALTER
SETSTS TMPC,(R) ;DO IT
MOVE R,SGAPPN
LOOKUP TMPC,T
JRST GLSLUA ;LOOK UP .SHR FILE
MOVS F,R
TRZ TT,-1 ;WE NOW OPEN IT FOR READ-ALTER MODE FOR
SETZ D, ; THE SOLE PURPOSE OF PREVENTING OTHER
MOVE R,SGAPPN ; JOBS FROM READING IT TOO, THEREBY
ENTER TMPC,T ; CAUSING WEIRD RACE CONDITIONS
JRST GLSLUA
MOVE T,SGANAM
ATTSEG T, ;SEE IF SOMEONE ELSE HAS SAME HISEG; THIS CAN
SKIPA T,F ; HAPPEN IF SOME OTHER JOB GETS THROUGH THIS
JSP FREEAC,CHKHGH ; CODE BETWEEN OUR FIRST ATTSEG AND THE ENTER
MOVNS T ;T GETS LENGTH OF .SHR FILE
ADD T,.JBREL
HRR R,.JBREL ;MUST GOBBLE SOME COPIES OF .JBREL
HRRZ TT,.JBREL ; BEFORE THE CORE UUO CHANGES IT
CORE T, ;EXTEND LOSEG BY THIS AMOUNT
JRST GLSLZ1
SETZ F,
IN TMPC,R ;READ IN HISEG
SKIPA T,SGANAM
JRST LDSCRU
TLO TT,HSGORG ;WRITE PROTECT HISEG
GETHG2: REMAP TT, ;LET'S SPLIT
JRST GLSLZ3
GETHG1:
MOVE T,SGANAM
SETNM2 T,
HALT
RELEASE TMPC, ;FLUSH TEMP CHANNEL *AFTER* CREATING THE HISEG
] ;END OF IFN SAIL
RETHGH: JRST . ;RETURN ADDR CLOBBERED IN HERE
GLSLUY: SIXBIT \CANNOT GET HIGH SEGMENT!\
GLSLUA: MOVEI C,GLSLUY
IFN SAIL,[
RELEASE TMPC,
TLZ TT,-1
CAIE TT,ERFBM% ;COLLISION DUE TO LOCKOUT?
JRST GLSLZ0 ;NO, GENUWINE LOSSAGE
PJOB TT, ;THIS IS ALL PRETTY RANDOM - WE'RE
IDIVI TT,7 ; TRYING JUST A LITTLE BIT TO SOLVE
SLEEP D, ; THE HAIRY RACE CONDITIONS (ALOHA!)
JRST GETHGH
CHKHGH: MOVE D,SGAPPN
CAME D,PSGPPN
JRST GLSLZ4
MOVE D,SGADEV
CAME D,PSGDEV
JRST GLSLZ4
MOVE D,SGAEXT
CAME D,PSGEXT
JRST GLSLZ4
MOVE D,SGANAM ;CHECK HISEG VALIDATION WORDS
CAME D,PSGNAM
JRST GLSLZ4
JRST GETHG1
GLSLZ4: SETZ T, ;WRONG HISEG, SO ZERO IT OUT AND START AGAIN
CORE2 T,
JRST GLSLZ1
MOVE TT,SGADEV
MOVE T,F
JRST (FREEAC)
GLSLZ0:
] ;END OF IFN SAIL
HRLI C,440600 ;WILL READ A SIXBIT STRING
GLSLZA: ILDB T,C ;READ STRING AND TYPE IT
ADDI T," " ;CONVERT TO ASCII
OUTCHR T
CAIE T,"!" ;STOP AFTER EXCLAMATION-POINT
JRST GLSLZA
EXIT ;FOO
IFN SAIL,[
GLSLZ1: OUTSTR GLSLM1
EXIT
GLSLM1: ASCIZ \?CORE UUO LOST
\
GLSLZ2: OUTSTR GLSLM2
EXIT
GLSLM2: ASCIZ \?IN UUO LOST
\
GLSLZ3: OUTSTR GLSLM3
JRST GETHG2
GLSLM3: ASCIZ \?REMAP lost -- no job slots available, retrying
\
] ;END OF IFN SAIL
SGANAM:
SA% 0 ;THESE ARE THE SAVED NAMES FOR GETTING
SA$ SIXBIT \MACLSP\
SGADEV:
SA% 0 ; THE HIGH SEGMENT BACK AFTER SUSPENSION
SA$ SIXBIT \SYS\
SGAPPN: 0 .SEE SUSPEND
SGAEXT: SIXBIT \SHR\ ;SOME LOSER MIGHT WANT TO CHANGE THIS
;;; CODE FOR FASLOAD TO READ IN A NEW HIGH SEGMENT.
;;; THIS CODE MUST BE IN THE LOW SEGMENT!
;;; T HAS LENGTH OF THE .SHR FILE; LH(R) HAS NEGATIVE OF THIS.
LDRIHS:
IFE SAIL,[
MOVSI TT,1
CORE TT, ;FLUSH OLD HIGH SEGMENT
JRST LDSCRU
HRRZ TT,.JBREL ;CURRENT HIGHEST ADDRESS IN LOSEG
HRRZ D,.JBREL
HRR R,.JBREL
ADD TT,T
CORE TT, ;EXPAND LOSEG SO CAN HOLD COPY OF HISEG
JRST LDSCRU ; (REMEMBER, CAN'T DO I/O INTO HISEG!)
SETZ F,
IN TMPC,R ;READ IN .SHR FILE
CAIA
JRST LDSCRU
REMAP D, ;NOW MAKE A HISEG FROM THE READ-IN CODE
JRST LDSCRU
SETUWP F, ;TOPS-10 PROTECTS US FROM OURSELVES,
JRST LDSCRU ; SO WE MUST MAKE HISEG WRITABLE (F IS ZERO)
SETZM SGANAM ;WE NO LONGER KNOW THE HIGHSEG NAME!
;IF THIS IS NON-ZERO, HIGH-SEG GETS FLUSHED
; DURING (SUSPEND) AND ALL THE STUFF WE'VE
; DONE TO IT GOES BYEBYE! (ARG!)
POPJ P,
] ;END OF IFE SAIL
IFN SAIL,[
SETZ TT,
CORE2 TT, ;FLUSH OLD HIGH SEGMENT
JRST LDSCRU
LDRHS1: CORE2 T, ;MAKE A NEW (WRITABLE) HISEG THAT BIG
JRST LDSCRU
MOVE T,D10NAM ;USE D10NAM AS HISEG NAME TO MAKE HISEG UNIQUE
LSH T,-6 ;AS LONG AS WE'RE BEING RANDOM...
SETNM2 T, ;TRY TO SET NAME FOR HIGH SEGMENT
JFCL
HLRE T,R ;GET WORD COUNT SING EXTENDED
MOVMS T ;AND MUST GET A HI-SEG THAT BIG
HRRI R,HSGORG-1
SETZ F,
IN TMPC,R ;READ IN HISEG
POPJ P, ;RETURN TO CODE IN HISEG
] ;END OF IFN SAIL
LDSCRU: OUTSTR [ASCIZ \DEPURIFYING HISEG LOST - YOU ARE STRANDED!
\]
SA% EXIT
SA$ JRST LDRHS1
] ;END OF IFN HISEGMENT
SUBTTL LOBITSG TEST
CONSTANTS
;;; NO MORE CONSTANTS PERMITTED AFTER THIS IN THE LOSEG (WRITEABLE FIRST PAGE)
IF1,[
ZZ==.
LOBITSG==0 ;NON-ZERO ==> BITSGS ARE LOW
PAGEUP
TOP.PG==.
IFGE TOP.PG-ZZ-SEGSIZ,[ ;SEE IF THERE IS ANOTHER SEGMENT LEFT ON THIS PAGE
SEGUP ZZ
SPCTOP ZER,SYS,["ZERO" (LOW IMPURE)]
SPCBOT BIT
BTBLKS: BLOCK BTSGGS*SEGSIZ-1
SEGUP .
SPCTOP BIT,ST,[BIT BLOCK]
IFE TOP.PG-., LOBITSG==1
.ELSE,[
WARN [LOBITSG STUFF DIDN'T WORK]
EXPUNGE NZERSG NBITSG BBITSG
EXPUNGE BTBLKS
LOBITSG==0
] ;END OF .ELSE
] ;END OF IFGE TOP.PG-ZZ-SEGSIZ
] ;END OF IF1
IF2,[
IFN PAGING, PAGEUP
IFE PAGING, SEGUP .
] ;END OF IF2
IFE LOBITSG, SPCTOP ZER,SYS,["ZERO" (LOW IMPURE)]
PG% EXPUNGE BZERSG
EXPUNGE TOP.PG
SUBTTL SEGMENT TABLES
;;; FORMAT OF SEGMENT TABLE (<NSEGS> WORDS, ONE FOR EACH SEGMENT)
;;; 4.9 LS 1=LIST STRUCTURE, 0=ATOMIC
;;; 4.8 $FS FREE STORAGE (BIT 4.9 SHOULD BE ON ALSO)
;;; 4.7 FX FIXNUM STORAGE
;;; 4.6 FL FLONUM STORAGE
;;; 4.5 BN BIGNUM HEADER STORAGE
;;; 4.4 SY SYMBOL HEADER STORAGE
;;; 4.3 SA SAR STORAGE (BIT 3.8 SHOULD BE ON ALSO)
;;; 4.2 VC VALUE CELL STORAGE (BIT 4.9 SHOULD BE ON ALSO)
;;; 4.1 $PDLNM NUMBER PDL AREA
;;; (ONE OF THE NUMBER TYPE BITS SHOULD BE ON ALSO)
;;; 3.9 RESERVED - AVOID USING (FORMERLY $FLP)
;;; 3.8 $XM EXISTENT (RANDOM) AREA
;;; 3.7 $NXM NONEXISTENT (RANDOM) AREA
;;; 3.6 PUR PURE SPACE (ONE OF BITS 4.8-4.5 OR 3.8 SHOULD BE ON)
;;; 3.5 HNK HUNK OF ONE KIND OR ANOTHER (BIT 4.9 ON ALSO)
;;; 3.4 DB DOUBLE-PRECISION FLONUMS ;THESE ARE
;;; 3.3 CX COMPLEX NUMBERS ; NOT YET
;;; 3.2 DX DOUBLE-PRECISION COMPLEX NUMBERS ; IMPLEMENTED
;;; 3.1 UNUSED
;;; 2.9-1.1 ADDRESS OF A DATA TYPE, ATOM:
;;; QLIST, QFIXNUM, QFLONUM, QBIGNUM,
;;; QSYMBOL, QRANDOM, QARRAY, QHUNK<N>
;;; NOTE THAT THESE ATOMS OCCUPY CONSECUTIVE MEMORY
;;; LOCATIONS AND THUS NUMERICALLY ENCODE THE PAGE TYPE.
;;; THIS COMMENT SHOULD BE KEPT CONSISTENT WITH THE DEFINITIONS (IN THE
;;; DEFNS FILE) FOR THE ABOVE SYMBOLS, AND WITH LOCATION PSYMTT.
.SEE LS
.SEE PSYMTT
SPCBOT ST
ST: ;SEGMENT TABLE
IFE PAGING, BLOCK NSEGS ;FOR PAGING SYSTEM, CODE IN INIT SETS UP
; THESE TABLES AT RUN TIME.
IFN PAGING,[
IF1, BLOCK NSEGS
IF2,[
STDISP: EXPUNGE STDISP ;FOR .SEE
$ST ZER,$XM ;"ZERO" (LOW IMPURE) SEGMENTS
IFN LOBITSG, $ST BIT,$XM ;BIT BLOCKS
$ST ST,$XM ;SEGMENT TABLES
$ST SYS,$XM+PUR ;SYSTEM CODE
$ST SAR,SA ;SARS (ARRAY POINTERS)
$ST VC,LS+VC ;VALUE CELLS
$ST XVC,$NXM ;RESERVED FOR EXTRA VALUE CELLS
$ST IS2,$XM ;IMPURE SYMBOL BLOCKS
$ST SYM,SY ;SYMBOL HEADERS
$ST XXA,$XM ;SLACK SEGMENTS (IMPURE!)
$ST XXZ,$NXM ;SLACK SEGMENTS (INITIALLY NXM)
$ST SY2,$XM+PUR ;PURE SYMBOL BLOCKS
$ST PFX,FX+PUR ;PURE FIXNUMS
$ST PFS,LS+$FS+PUR ;PURE FREE STORAGE (LIST)
$ST PFL,FL+PUR ;PURE FLONUMS
$ST XXP,$XM+PUR ;SLACK PURE SEGMENT (FOOEY!)
$ST IFS,LS+$FS ;IMPURE FREE STORAGE (LIST)
$ST IFX,FX ;IMPURE FIXNUMS
$ST IFL,FL ;IMPURE FLONUMS
IFN BIGNUM, $ST BN,BN ;BIGNUMS
$ST XXB,$XM ;SLACK SEGMENTS (IMPURE!)
IFE LOBITSG, $ST BIT,$XM ;BIT BLOCKS
$ST BPS,$XM ;BINARY PROGRAM SPACE
$ST NXM,$NXM ;(INITIALLY) NON-EXISTENT MEMORY
$ST FXP,FX+$PDLNM ;FIXNUM PDL
$ST XFXP,$NXM ;FOR FXP EXPANSION
$ST FLP,FL+$PDLNM ;FLONUM PDL
$ST XFLP,$NXM ;FOR FLP EXPANSION
$ST P,$XM ;REGULAR PDL
$ST XP,$NXM ;FOR P EXPANSION
$ST SP,$XM ;SPECIAL PDL
$ST XSP,$NXM ;FOR SP EXPANSION
$ST SCR,$NXM ;SCRATCH SEGMENTS
.HKILL ST.ZER
IFN ST+NSEGS-., WARN \.-ST,[=WRONG SEGMENT TABLE LENGTH (SHOULD BE ]\NSEGS,[)]
] ;END IF2
] ;END IFN PAGING
;;; THE FORMAT OF THE GARBAGE COLLECTOR SEGMENT TABLE IS RATHER HAIRY, SINCE
;;; THE SIZES AND POSITIONS OF ALL FIELDS IN EACH WORD ARE DEPENDENT ON THE
;;; SEGMENT SIZE. THE LOW ORDER <22-<SEGLOG-5>> BITS OF EACH ENTRY CONTAIN
;;; THE HIGH BITS OF THE ADDRESS OF THE BLOCK OF BITS TO BE USED IN MARKING
;;; THAT SEGMENT. (NOTE THAT THE OMITTED LOW-ORDER BITS OF THIS ADDRESS ARE
;;; ZERO ANYWAY.) THESE ADR BITS ARE IN THIS STRANGE RIGHT-ADJUSTED POSITION
;;; FOR THE CONVENIENCE OF THE GCMARK ROUTINE (Q.V.). NOT ALL SEGMENTS HAVE
;;; BIT BLOCKS; THOSE WHICH DO NOT HAVE A BIT BLOCK HAVE ZERO IN THIS FIELD.
;;; TO THE LEFT OF THIS BIT BLOCK ADDRESS FIELD IS A FIELD OF <22-SEGLOG> BITS;
;;; THIS CONTAINS THE NUMBER OF THE NEXT SEGMENT IN THE TABLE OF THE SAME TYPE.
;;; (NOT ALL SEGMENTS ARE LINKED IN THIS WAY; THOSE SEGMENTS WHICH ARE NOT
;;; LINKED TO ANOTHER ONE HAVE THIS FIELD ZERO.) THE HIGH-ORDER BIT (BIT 4.9)
;;; IS ONE IFF GCMARK SHOULD MARK (PERHAPS NOT WITH A BIT BLOCK) THE CONTENTS
;;; OF THE SEGMENT. THE BIT 22 BIT POSITIONS TO THE LEFT OF THE HIGH-ORDER
;;; BIT OF THE BIT BLOCK ADDRESS FIELD IS ONE IFF GCMARK SHOULD MARK FROM THE
;;; CDR OF AN OBJECT IN THE SEGMENT; THIS BIT IS MEANINGFUL ONLY IF BIT 4.9
;;; IS ONE. THE BIT TO THE RIGHT OF THE CDR BIT IS ONE IFF GCMARK SHOULD ALSO
;;; MARK FROM THE CAR OF AN OBJECT IN THE SEGMENT; THIS BIT IS MEANINGFUL ONLY
;;; IF THE CDR BIT IS ONE. THESE THREE BITS MUST BE IN THESE EXACT POSITIONS,
;;; AGAIN FOR THE CONVENIENCE OF GCMARK (Q.V.). THE OTHER BITS IN EACH WORD
;;; ARE ARRANGED AS TO USE UP FREE BITS FROM THE LEFT END OF THE WORD, PACKED
;;; IN AROUND THE THREE BITS ALREADY DESCRIBED. THESE BITS INDICATE WHETHER
;;; OR NOT THE SEGMENT CONTAINS VALUE CELLS, SYMBOLS, OR SARS.
GCBMRK==400000 ;THESE ARE ALL LEFT HALF FLAGS
GCBCDR==1_<22-<SEGLOG-5>-1>
GCBCAR==GCBCDR_-1
GCB==1,,525252 ;FOR BIT TYPEOUT MODE
ZZZ==400000
GCBFOO==0
IRPS NAM,X,[VC+SYM+SAR+HNK ]
ZZZ==ZZZ_-1
IFN ZZZ&GCBCDR, ZZZ==ZZZ_-2
GCB!NAM==ZZZ
IFSE X,+, GCBFOO==GCBFOO\ZZZ
TERMIN
IFG GCBHNK-GCBCAR, WARN [GCMARK WILL LOSE ON HUNKS]
GCST: ;GC SEGMENT TABLE
IFE PAGING, BLOCK NSEGS ;FOR PAGING SYSTEM,
; THE GCST TABLE IS SET UP AT RUN TIME BY INIT.
IFN PAGING,[
IF1, BLOCK NSEGS
IF2,[
BTB.==BTBLKS ;LOCATION COUNTER FOR ASSIGNING BIT BLOCKS
$GCST ZER,,,0
IFN LOBITSG, $GCST BIT,,,0
$GCST ST,,,0
$GCST SYS,,,0
$GCST SAR,L,,GCBMRK+GCBSAR
$GCST VC,,,GCBMRK+GCBVC
$GCST XVC,,,0
$GCST IS2,L,,0
$GCST SYM,L,,GCBMRK+GCBSYM
$GCST XXA,L,,0
$GCST XXZ,,,0
$GCST SY2,,,0
$GCST PFX,,,0
$GCST PFS,,,0
$GCST PFL,,,0
$GCST XXP,,,0
$GCST IFS,L,B,GCBMRK+GCBCDR+GCBCAR
$GCST IFX,L,B,GCBMRK
$GCST IFL,L,B,GCBMRK
IFN BIGNUM, $GCST BN,L,B,GCBMRK+GCBCDR
LXXBSG==LXXASG
$GCST1 NXXBSG,XXB,L,,0
IFE LOBITSG, $GCST BIT,,,0
$GCST BPS,,,0
$GCST NXM,,,0
$GCST FXP,,,0
$GCST XFXP,,,0
$GCST FLP,,,0
$GCST XFLP,,,0
$GCST P,,,0
$GCST XP,,,0
$GCST SP,,,0
$GCST XSP,,,0
$GCST SCR,,,0
.HKILL GS.ZER
IFN GCST+NSEGS-., WARN \.-GCST,[=WRONG GC SEGMENT TABLE LENGTH (SHOULD BE ]\NSEGS,[)]
] ;END IF2
] ;END OF IFN PAGING
PAGEUP
SPCTOP ST,,[SEGMENT TABLE]
IFN PAGING, SPCBOT SYS
10$ $HISEG
10$ HILOC==. ;ORIGIN OF HIGH SEGMENT
SA$ PSGNAM: 0 ;THESE LOCATIONS FOR SAIL HISEG VALIDATION
SA$ PSGDEV: 0
SA$ PSGEXT: 0
SA$ PSGPPN: 0
SUBTTL BEGINNING OF PURE LISP SYSTEM CODE
PGBOT ERR
;;; THESE CONSTANTS ARE BUILT INTO THE COMPILER.
;;; THEY MUST BE DEFINED HERE FOR THE BENEFIT OF THE PUSHN MACRO.
.SEE PUSHN
NNPUSH==:20 .SEE NPUSH
N0PUSH==:10 .SEE 0PUSH
N0.0PUSH==:10 .SEE 0.0PUSH
BPURPG==:. ;BEGINNING OF PURE PAGES FOR INSERT FILE PAGE AND PURIFY
$$$NIL: 777300,,VNIL ;SYMBOL BLOCK FOR NIL
0,,$$NIL ;ALWAYS KEEP ON FIRST PURE SYSTEM PAGE
$INSRT ERROR ;ERROR MSGS AND HANDLERS
;;; ERROR FILE HAS DEFINITION FOR BEGFUN
PGTOP ERR,[ERROR HANDLERS AND MESSAGES]
PGBOT TOP
;;; LISPGO HAS BEEN MOVED SO IT WILL STAY IN CORE WHEN PURE PAGES ARE FLUSHED
;;; AT SUSPEND TIME AS CONTROLLED BY THE SUSFLS FLAG.
SUBTTL BASIC TOP LEVEL LOOP
;;; (DEFUN STANDARD-TOP-LEVEL ()
;;; (PROG (^Q ^W ^R EVALHOOK BASE IBASE ...)
;;; ERROR ;ERRORS, UNCAUGHT THROWS, ETC. COME HERE
;;; ^G ;^G QUITS COME HERE
;;; (RESET-BOUND-VARIABLES-AND-RESTORE-PDLS)
;;; (SETQ ^Q NIL)
;;; (SETQ ^W NIL)
;;; (SETQ EVALHOOK NIL)
;;; (NOINTERRUPT NIL)
;;; (DO-DELAYED-TTY-AND-ALARMCLOCK-INTERRUPTS)
;;; ;RECALL THAT ERRORS DO (SETQ // ERRLIST)
;;; (MAPC (FUNCTION EVAL) //)
;;; (OR (TOP-LEVEL-LINMODE) (TERPRI))
;;; (DO ((PRT '* *))
;;; (NIL) ;DO FOREVER (UNTIL ERROR OR ^G QUIT)
;;; (SETQ * (COND ((STATUS TOPLEVEL)
;;; (EVAL (STATUS TOPLEVEL)))
;;; ((PROG ()
;;; (READ-EVAL-*-PRINT PRT) ;print
;;; (READ-EVAL-PRINT-*) ;terpri
;;; A (SETQ TEM (*-READ-EVAL-PRINT)) ;read
;;; (AND (EQ TEM <INTERNAL-EOF-MARKER>)
;;; (PROG2 (TERPRI) (GO A)))
;;; (RETURN (READ-*-EVAL-PRINT TEM)))))) ;eval
;;; )))
LSPRET: PUSHJ FXP,ERRPOP
MOVE P,C2 ;RETURN TO TOP LEVEL BY ERR, THROW, AND ERRORS
LSPRT1: JSP T,TLVRSS ;RETURN TO TOP BY ^G
JSP A,ERINIT
SETZ A, ;NEED A NIL IN A FOR CHECKU
PUSHJ P,CHECKU ;CHECK FOR DELAYED "REAL TIME" INTS
MOVEI A,QOEVAL
SKIPE B,VIQUOTIENT ;SHADES OF ERRLIST!!!
CALLF 2,QMAPC
HACENT: PUSH P,FLP .SEE PDLCHK
PUSH P,FXP
PUSH P,SP
PUSH P,LISP1 ;ENTRY FROM LIHAC
HRRZ F,VINFILE ;ONLY PRINT FIRST ASTERISK IF NO INIT FILE
AOSN TOPAST ;IS THIS THE FIRST TIME?
CAIE F,INIIFA
SKIPA ;NOT (INIT-FILE AND FIRST-TIME)
JRST LISP2B
PUSH P,[Q.]
JSP F,LINMDP
PUSHJ P,ITERPRI
JRST LISP2 ;KLUDGE SO AS NOT TO MUNG *
LISP1: PUSH P,LISP1 ;******* BASIC TOP LEVEL LOOP *******
HRRZM A,V. ;THE SYMBOL * GETS AS ITS VALUE THE
PUSH P,A
LISP2: JSP T,TLVRSS ; RESULT OF THE LAST TOP-LEVEL EVAL
POP P,B
SKIPN A,TLF
JRST LISP2A
HRRZ TT,-3(P)
HRRZ D,-2(P)
HRRZ R,-1(P)
PUSHJ P,PDLCHK ;CHECK PDL LEVELS FOR ERRORS
JRST EVAL
LISP2A: MOVEI A,(B)
PUSHJ P,TLPRINT ;PRINT THE LAST OUTPUT FORM
HRRZ TT,-3(P)
HRRZ D,-2(P)
HRRZ R,-1(P)
PUSHJ P,PDLCHK ;CHECK PDL LEVELS FOR ERRORS
PUSHJ P,TLTERPRI ;OUTPUT A TERPRI
LISP2B: PUSHJ P,TLREAD ;READ AN INPUT FORM
JRST TLEVAL ;EVALUATE IT, RETURNING TO LISP1 IF NO EOF
SETZ AR1,
PUSHJ P,TERP1
JRST LISP2B ; LOOP BACK AFTER EOF-PROCESSED EXIT
;;; (DEFUN STANDARD-IFILE ()
;;; (COND ((OR (NULL ^Q) (EQ INFILE 'T)) TYI)
;;; ('T INFILE)))
STDIFL: HRRZ A,VINFILE
SKIPE TAPRED
CAIN A,TRUTH
HRRZ A,V%TYI
POPJ P,
;;; (DEFUN READ-EVAL-PRINT-* () ;TOP-LEVEL-TERPRI
;;; (AND READ-EVAL-PRINT-*
;;; (FUNCALL READ-EVAL-PRINT-*))
;;; ((LAMBDA (IFILE)
;;; (AND (TTYP IFILE)
;;; (TOP-LEVEL-TERPRI-X (STATUS LINMODE IFILE)
;;; (STATUS TTYCONS IFILE))))
;;; (STANDARD-IFILE)))
;;;
;;; (DEFUN TOP-LEVEL-TERPRI-X (LM OFILE)
;;; (AND OFILE
;;; (COND ((EQ OFILE TYO)
;;; (TERPRI (CONS T (AND ^R OUTFILES))))
;;; (T (OR LM ^W (TERPRI OFILE))))))
TLTERPRI:
SKIPE B,VTLTERPRI ;CHECK FOR USER'S INTERCEPT FUNCTION
CALLF 0,(B)
PUSHJ P,STDIFL ;GET STANDARD INPUT FILE
MOVE C,A
JSP F,STBIDP ;IF INPUT FILE IS BI-DIRECTIONAL
POPJ P, ; THEN WE WANT TO TERPRI IT
MOVEI TT,F.MODE ;HAS LEFT INPUT'S TTYCONS IN C
MOVE F,@TTSAR(A)
;TOP-LEVEL-TERPRI-X; TTYCONS IN C, F.MODE IN F,
TLTERX: CAME C,V%TYO
JRST TLTER1
SKIPE AR1,TAPWRT ;IF SAME AS TYO, TERPRI TO
HRRZ AR1,VOUTFILES ; STANDARD OUTPUT FILES
JRST TERP1
TLTER1: TLNN F,FBT.LN ;IF INPUT FILE NOT IN LINMODE,
SKIPE TTYOFF ; AND ^W IS NOT SET,
POPJ P, ; TERPRI TO JUST THE TTYCONS FILE
TLO AR1,-1
JRST TERP1
;;; (DEFUN *-READ-EVAL-PRINT () ;TOP-LEVEL-READ
;;; (AND *-READ-EVAL-PRINT
;;; (FUNCALL *-READ-EVAL-PRINT))
;;; (DO ((EOF (LIST 'TLRED1)) (IFILE) (FORM))
;;; (NIL) ;DO UNTIL RETURN
;;; (SETQ IFILE (STANDARD-IFILE IFILE))
;;; (SETQ FORM (COND (READ (FUNCALL READ EOF))
;;; ('T (READ EOF))))
;;; (COND ((NOT (EQ FORM EOF))
;;; (AND (NULL READ)
;;; (ATOM FORM)
;;; (IS-A-SPACE (TYIPEEK))
;;; (TYI))
;;; (RETURN FORM)))
;;; (COND ((TTYP IFILE)
;;; (TOP-LEVEL-TERPRI-X () (STATUS TTYCONS IFILE)))
;;; ('T (RETURN <INTERNAL-EOF-MARKER>)))))
$TLREAD: PUSHJ P,TLREAD
POPJ P,
SETZ AR1,
PUSHJ P,TERP1
JRST $TLREAD
TLREAD: SKIPE B,V$TLREAD ;CHECK FOR USER'S INTERCEPT FUNCTION,
CALLF 0,(B) ; AND RUN IT.
PUSHJ P,STDIFL ;GET STANDARD INPUT FILE AS OF
PUSH P,A ; *BEFORE* THE READ, AND SAVE IT
PUSHJ P,[PUSH P,(P) ;ARGUMENT FOR RANDOM EOF VALUE
MOVNI T,1 ;READ THE FORM (POSSIBLY USING USER'S READ)
SKIPE VOREAD ; AND POSSIBLY POPPING INSTACK INTO INFILE
JCALLF 16,@VOREAD
JRST OREAD]
TLRED1: POP P,C
CAIE A,TLRED1
JRST TLREDF
JSP F,STBIDP ;GET BI-DIRECTIONAL ASSOCIATE, IF IT EXISTS,
JRST POPJ1 ; OF STREAM IN B INTO AR1
SETZ F, ;EOF ON TTY MEANS OVER-RUBOUT, SO
PUSHJ P,TLTERX ; TERPRI ON ASSOCIATED OUTPUT TTY
JRST TLREAD ; AND TRY AGAIN
TLREDF: SKOTT A,LS ;SPCFLS - FLUSH A <SPACE> TERMINATING AN ATOM
SKIPE VOREAD
POPJ P, ;NORMAL EXIT - NO EOF, NO SKIP
PUSH P,A
MOVEI T,0 ;PEEL OFF A SPACE, IF THAT
PUSHJ P,TYIPEEK+1 ;WAS WHAT TERMINATED THE ATOM
MOVE T,VREADTABLE
MOVE TT,@TTSAR(T)
MOVEI T,0
TLNE TT,100000 ;WORTHLESS CHAR, OR SPACE ETC.
PUSHJ P,%TYI
JRST POPAJ
;;; (DEFUN READ-*-EVAL-PRINT (FORM) ;TOP-LEVEL-EVAL
;;; (AND READ-*-EVAL-PRINT
;;; (FUNCALL READ-*-EVAL-PRINT FORM))
;;; (SETQ - FORM)
;;; ((LAMBDA (+)
;;; (PROG2 NIL
;;; (EVAL +)
;;; (AND (OR (CAR NIL) (CDR NIL))
;;; (ERROR '|NIL CLOBBERED|
;;; (PROG2 NIL
;;; (CONS (CAR NIL) (CDR NIL))
;;; (RPLACA NIL NIL)
;;; (RPLACD NIL NIL))
;;; 'FAIL-ACT))))
;;; (PROG2 NIL + (SETQ + (COND ((EQ - '+) +) ('T -))))))
TLEVAL: SKIPE B,VTLEVAL ;CHECK FOR USER'S INTERCEPT FUNCTION
CALLF 1,(B)
MOVEM A,VIDIFFERENCE ;THE SYMBOL - GETS THE TYPED-IN
CAIN A,QIPLUS
SKIPA B,VIPLUS
MOVEI B,(A) ; EXPRESSION AS ITS VALUE AND KEEPS IT
EXCH B,VIPLUS ;THE SYMBOL + GETS THE THE TYPED-IN
JSP T,SPECBIND ; EXPRESSION AS ITS VALUE, BUT NOT
0 B,VIPLUS ; UNTIL AFTER IT HAS BEEN EVALUATED.
CEVAL: PUSHJ P,EVAL ;SPECBINDING IT ENSURES THAT IT WILL
JUMPE UNBIND ; GET THIS VALUE IN SPITE OF ERRORS.
PUSH P,CUNBIND
NILBAD: PUSH P,A ;FOO! WELL, ERROR HANDLING SAVES
PUSH P,CPOPAJ ;ALL ACS IN CASE YOU WANT TO CONTINUE
MOVS A,NIL
CSETZ: SETZ NIL, ;NIL=0! CAN USE THIS AS A CONSTANT WORD
PUSHJ P,ACONS
%FAC [SIXBIT \NIL CLOBBERED!\]
;;; PUSHJ HERE WITH PROPER VALUES FOR THE RIGHT HALVES
;;; OF <FLP, FXP, SP> IN <TT, D, R>. WILL ERROR OUT
;;; IF THEY DON'T MATCH UP. USED FOR TRAPPING GROSS
;;; ERRORS IN THE SYSTEM.
PDLCHK: SETZ T,
CAIE TT,(FLP)
MOVEI T,QFLPDL
CAIE D,(FXP)
MOVEI T,QFXPDL
CAIE R,(SP)
MOVEI T,QSPECPDL
JUMPE T,CPOPJ ;EVERYBODY HAPPY?
PDLCRP: MOVEI A,(T) ;NO, PDL CRAP-OUT
LER3 [SIXBIT \OUT OF PHASE (SYSTEM ERROR)!\]
;;; (DEFUN TOP-LEVEL-LINMODE ()
;;; ((LAMBDA (FL)
;;; (COND ((AND (TTYP FL) (STATUS LINMODE FL))
;;; FL)))
;;; (STANDARD-IFILE INFILE)))
;;; SKIP IF INFILE IS IN LINE MODE.
;;; ALSO LEAVE OUTFILES IN AR1 AND READTABLE IN AR2A.
;;; FURTHERMORE LEAVE INPUT FILE IN C (SEE TLPRINT).
;;; ALSO LEAVE TTSAR OF INPUT FILE IN T.
LINMDP: JSP T,GTRDTB
HRRZ C,VINFILE
SKIPE TAPRED
CAIN C,TRUTH
HRRZ C,V%TYI
SKIPE AR1,TAPWRT
HRRZ AR1,VOUTFILES
SFA$ HRLZI TT,AS.SFA ;SFAS ARE NEVER IN LINE MODE
SFA$ TDNE TT,ASAR(C)
SFA$ JRST (F) ;RETURN NON-LINEMODE
XCTPRO
MOVE T,TTSAR(C)
MOVE TT,F.MODE(T)
NOPRO
TLNE T,TTS.TY
TLNN TT,FBT.LN ;ONLY A TTY CAN HAVE LINMODE SET
JRST (F) ;TYPICALLY RETURN TO AN ITERPRI
JRST 1(F) ; OR SKIP OVER IT
;;; (DEFUN READ-EVAL-*-PRINT (OBJ) ;TOP-LEVEL-PRINT
;;; (AND READ-EVAL-*-PRINT
;;; (FUNCALL READ-EVAL-*-PRINT OBJ))
;;; ((LAMBDA (FL)
;;; (COND ((OR (NULL FL) (NOT (EQ (STATUS TTYCONS FL) TYO)))
;;; (TERPRI IFILE)))
;;; (COND (PRIN1 (FUNCALL PRIN1 OBJ)) ('T (PRIN1 OBJ)))
;;; (TYO 32.)) ;<SPACE>
;;; (TOP-LEVEL-LINMODE)))
TLPRINT:
SKIPE C,VTLPRINT ;CHECK FOR USER'S INTERCEPT FUNCTION
CALLF 1,(C)
PUSH P,A ;TOP-LEVEL PRINT
JSP F,LINMDP ;LEAVES INPUT FILE IN C, VOUTFILES in AR1
JRST TLPR1
JSP F,STBIDP ;BI-DIRECTIONAL?
JRST TLPR1 ;NO, SO GO AHEAD AND TERPRI
CAME C,V%TYO ;IF ASSOCIATED CHANNEL IS TYO, THEN DON'T
; OUTPUT THE <CR> SINCE ECHOING WILL DO
TLPR1: PUSHJ P,ITERPRI
TLPR1A: MOVE A,(P)
PUSHJ P,IPRIN1
MOVEI A,40
PUSHJ P,TYO
JRST POPAJ
IPRIN1: SKIPN V%PR1
JRST PRIN1
JCALLF 1,@V%PR1
;; FOR A "BI-DIRECTIONAL" STREAM, GET THE "ASSOCIATE" STREAM INTO C
;; FOR TTYS, THIS IS JUST (STATUS TTYCONS)
STBIDP: HRLZI TT,AS.SFA
TDNE TT,ASAR(C) ;ENTER WITH STREAM IN C
JRST [ MOVEI TT,SR.CNS ;IF SFA, THEN GET THE TTYCONS SLOT
HLRZ C,@TTSAR(C)
JRST STBD1 ]
MOVE T,TTSAR(C) ;PICK UP THE TTSAR
TLNN T,TTS.TY
JRST (F) ;PLAIN EXIT, NO SKIP, FOR NON-BI
MOVEI TT,FT.CNS
HRRZ C,@T ;PICK UP FT.CNS FROM TTY FILE ARRAY
STBD1: JUMPN C,1(F) ; AND EXIT BY SKIPPING 1, IF TTYCONS EXISTS
JRST (F)
;;; TOP LEVEL VARIABLE SETTINGS
TLVRSS: MOVE A,[PNBUF,,PNBUF+1]
SETZM PNBUF
BLT A,PNBUF+LPNBUF-1
TLVRS1: PUSH P,EOFRTN
MOVE A,[ERRTN,,ERRTN+1]
SETZM ERRTN
BLT A,ERRTN+LEP1-1
SETOM ERRSW
POP P,EOFRTN
SETZB NIL,PANICP
SETZB A,PSYMF
SETZB B,EXPL5
SETZB C,PA3
SETZB AR1,RDLARG
SETZB AR2A,QF1SB
SETZM ARGLOC
SETZM ARGNUM
JRST (T)
IFN D10,[
SIXJBN: PJOB TT,
IDIVI TT,100.
IDIVI D,10.
LSH TT,14
LSH D,6
ADDI TT,(D)
ADDI TT,202020(R)
HRLI TT,(SIXBIT /LSP/)
MOVSM TT,D10NAM ;SAVE ###LSP AS TEMP FILE NAME
POPJ P,
] ;END OF IFN D10
SUBTTL INITIALIZATION ON ^G QUIT AND ERRORS
;;; ERINIT RESETS PDL POINTERS, THEN FALLS INTO ERINI0.
;;; ERINI0 RESETS VARIOUS VARIABLES AND PERFORMS CLEANUP.
ERINIT:
;DISABLE INTERRUPT SYSTEM
10$ SA% MOVE P,C2
10$ SA% MOVE FXP,FXC2
PIPAUSE ;DISABLE ALL INTERRUPTS
ERINIX: ;ENTER HERE IF INTERRUPTS ALREADY DISABLED
IFE PAGING*<1-SAIL>,[
MOVE P,C2 ;SET UP PDL POINTERS
MOVE FXP,FXC2
MOVE FLP,FLC2
MOVE SP,SC2
] ;END OF IFE PAGING*<1-SAIL>
IFN PAGING,[
HRRZ T,LISPSW
CAIE T,LISP
JRST ERINI9
IFE SAIL,[
MOVE T,[$NXM,,QRANDOM]
MOVE TT,PDLFL2 ;CONTAINS <- # OF PDL SEGS,,# OF 1ST PDL SEG>
MOVEM T,ST(TT) ;UPDATE SEGMENT TABLE TO REFLECT
AOBJN TT,.-1 ; LOSS OF PDL PAGES
HRRZ T,PDLFL1
ROT T,-4
ADDI T,(T)
ROT T,-1
TLC T,770000
ADD T,[450200,,PURTBL]
SETZ D,
HLRE TT,PDLFL1
ERINI8: TLNN T,730000
TLZ T,770000
IDPB D,T
AOJL TT,ERINI8
IT$ MOVE T,PDLFL1 ;CONTAINS <- # OF PDL PAGES,,# OF 1ST PDL PAGE>
IT$ .CALL PDLFLS ;FLUSH ALL PDL PAGES
IT$ .VALUE
20$ WARN [SHOULD TWENEX FLUSH PDL PAGES??]
10$ WARN [SHOULD TOPS-10 FLUSH PDL PAGES??]
] ;END OF IFE SAIL
ERINI9:
IRP Z,,[P,FLP,FXP,SP]
MOVEI F,Z
MOVE Z,C2-P+Z ;CAUSE ONE PDL PAGE
MOVEI D,1(Z) ; FOR Z TO EXIST
ANDI D,PAGMSK ;BUT FOR SAIL, MAKE ALL EXIST
SA$ MOVE TT,D
JSR PDLSTH .SEE PDLST0
SA$ MOVEI D,PAGSIZ(TT)
SA$ CAMGE D,XPDL-P+Z
SA$ JRST .-4
TERMIN
ERIN8G: MOVE T,[XPDL,,ZPDL]
BLT T,ZSPDL
] ;END OF IFN PAGING
ERINI0: SETZB NIL,TAPRED ;INITIALIZATION AFTER PDL SETUP
SETZM NOQUIT
SETZM REALLY
SETZM FASLP
IFN USELESS, SETZM TYOSW
SETZM INTFLG
SETZM INTAR
SETZM VEVALHOOK
SETZM GCFXP ;NON-ZERO WOULD MEAN INSIDE GC
SETZM BFPRDP
MOVE T,[-LINTPDL,,INTPDL]
MOVEM T,INTPDL
MOVEI T,$DEVICE ;RESTORE READER'S LITTLE MEN
MOVEM T,TYIMAN
MOVEI T,IUNTYI ;INTERNAL UNTYI'ER
MOVEM T,UNTYIMAN
;FALLS THROUGH
;FALLS IN
ERINI2: SKIPL MUNGP ;MAYBE NEED TO UNMUNG SYMBOLS AND SARS
JRST ERINI6
MOVE D,SYSGLK
ERINI5: JUMPE D,ERIN5A
MOVEI F,(D)
LSH F,SEGLOG
HRLI F,-SEGSIZ
LDB D,[SEGBYT,,GCST(D)]
ERIN5C: MOVSI R,1
ANDCAB R,(F) ;UNMUNGS THE SYMBOL HEADER, IF NECESSARY
HLRZS R
HRRZ R,(R) ;GET ADDR OF VALUE CELL
CAIL R,BVCSG
CAIL R,BVCSG+<NXVCSG+1>*SEGSIZ
JRST .+2
JRST ERIN5D
CAIL R,BPURFS
CAIL R,PFSLAST
JRST .+2
JRST ERIN5D
HRRZS (R) ;UNMUNGS THE VALUE CELL, IF STORED IN LIST SPACE
ERIN5D: AOBJN F,ERIN5C
JRST ERINI5
ERIN5A: MOVE F,[SARTOB,,B]
BLT F,LPROGZ
MOVE D,SASGLK
ERIN5B: JUMPE D,ERINI6
MOVEI F,(D)
LSH F,SEGLOG
HRLI F,-SEGSIZ/2
LDB D,[SEGBYT,,GCST(D)]
JRST SATOB1
ERINI6: HRRZS MUNGP
SKIPN MUNGP ;UNMUNG VALUE CELLS (SEE ALIST)
JRST ERIN6A
MOVEI F,BVCSG
SUB F,EFVCS
HRLI F,(F)
HRRI F,BVCSG
HRRZS (F)
AOBJN F,.-1
SETZM MUNGP
ERIN6A: MOVE B,[ERRTN,,ERRTN+1]
SETZM ERRTN
BLT B,UIRTN
SETOM ERRSW
MOVSI B,-NSFC
ERINI3: MOVE C,SFXTBI(B) ;RESTORE CLOBBERED LOCATIONS
MOVEM C,@SFXTBL(B)
AOBJN B,ERINI3
TLZ A,-1
;ENABLE THE INTERRUPT SYSTEM
IFN ITS,[
.SUSET [.SMASK,,IMASK] ;RESTORE INTERRUPT ENABLE MASKS
.SUSET [.SMSK2,,IMASK2]
.SUSET [.SDF1,,R70] ;RESET DEFER WORDS
.SUSET [.SDF2,,R70]
] ;END OF IFN ITS
PIONAGAIN
JRST (A) ;RETURN TO CALLER
SARTOB: ;TURN OFF MARK BITS IN SARS
OFFSET B-.
SATOB1: ANDCAM SATOB7,TTSAR(F)
AOBJP F,ERIN5B
AOJA F,SATOB1
SATOB7:
TTS<GC>,,
LPROGZ==.-1
OFFSET 0
.HKILL SATOB1 SATOB7
PDLFLS: SETZ
SIXBIT \CORBLK\
1000,,0 ;DELETE PAGES...
1000,,-1 ; FROM MYSELF...
SETZ T ; AND HERE'S HOW MANY AND WHERE!
SUBTTL SPECIAL VARIABLE BINDING AND UNBINDING ROUTINES
JFCL ;HISTORICAL LOSS -- EVENTUALLY FLUSH
SPECBIND: MOVEM SP,SPSV ;0 0,FOO MEANS FOO IS ADDR OF SVC TO BE BOUND TO NIL, SAVES D
SPEC1: LDB R,[271500,,(T)] ;0 N,FOO MEANS SVC FOO TO BE BOUND TO CONTENTS OF ACC N
JUMPE R,SPEC4
CAILE R,17 ;7_41 M,FOO MEANS BIND FOO TO -M(P)
JRST SPEC3 ;OTHERWISE, IS PDP10 INSTRUCTION, SO EXIT
SPEC2: HRRZ R,(R) ;NOTE WELL! NCOMPLR DEPENDS ON THE FACT
CAML R,NPDLL ; THAT R = TT+2 = NUMVALAC+2
CAMLE R,NPDLH
JRST SPEC4
PUSH FXP,T
MOVEI T,(R)
LSH T,-SEGLOG
SKIPL T,ST(T) ;NMK1 WILL WANT TYPE BITS IN T
TLNN T,$PDLNM ;SKIP IF PDL NUMBER
JRST SPEC5
HRR T,(FXP)
LDB R,[271500,,(T)] ;RECOMPUTE ADDRESS OF FROB
CAIG R,17
JRST SPEC6
TRC R,16000#-1
ADDI R,1(P)
SPEC6: PUSHJ P,ABIND3 ;TEMPORARILY CLOSE THE BIND BLOCK
PUSH P,A
HRRZ A,(R)
PUSHJ P,NMK1
MOVEM A,(R) ;CLOBBER LOC OF FROB WITH NEW NUMBER
CAIN R,A ;GRUMBLE
MOVEM A,(P)
SUB SP,R70+1 ;SO RE-OPEN THE BIND-BLOCK
MOVEI R,(A) ;THEREBY INHIBITING INTERRUPTS
POP P,A
SPEC5: POP FXP,T
IFN D10,[
SPEC4: PUSH FXP,T
MOVEI T,@(T)
CAIN T,PWIOINT
JRST [ POP FXP,T
JRST WIOSPC]
EXCH R,(T)
POP FXP,T
] ;END IFN D10
10% BNDTRAP SPEC4,WIOSPC,T, EXCH R,@(T)
SPEC4A: HRL R,(T)
PUSH SP,R
AOJA T,SPEC1
SPEC3: CAIGE R,16000
JRST SPECX
TRC R,16000#-1 ;RH OF R NOW HAS N
ADDI R,1(P) ;SPECBINDING OFF PDL
JRST SPEC2
ERRPOP: POP FXP,ERRPAD ;POP RETURN ADR OFF FXP
MOVE TT,C2 ;RUN ALL OF THE UNWIND HANDLERS
MOVEM T,ERRPST ;SAVE T
PUSHJ FXP,UNWPRO
MOVE T,ERRPST ;RESTORE SAVED T
PUSH P,ERRPAD ;SAVE ERR RETURN ADR
;ENTRY POINT IF NO UNWIND-PROTECT FUNCTIONS SHOULD BE RUN
ERRPNU: SKIPA TT,ZSC2 ;TOTALLY POP OFF SPECPDL FOR ERRORS
UBD0: TLZA TT,-1 ;POP SPECPDL TO PLACE SPECIFIED IN TT
SETOM (TT) ;ERRPOP MUST SETOM - SEE UBD4
UBD: CAIL TT,(SP) ;RESTORE THE SPDL BY RESTORING VALUES
JRST UNBND2 ; UNTIL (SP) MATCHES (TT)
POP SP,R
HLRZ D,R
TLZ R,-1
CAMGE R,ZSC2
JRST UBD3
CAIG R,(SP)
JRST UBD4
SKIPN D
.LOSE ;Somebody screwed the SPECPDL - HELP!!!
BNDTRAP UBD3,UBDP,D, HRRZM R,(D)
UBD1: JRST UBD
UBDP: PUSH FXP,T ;Figure out if WITHOUT-INTERRUPTS
HRRZI T,(D)
CAIN D,PWIOINT ;WITHOUT-INTERRUPTS, handle specially
JRST UBDWIO
POP FXP,T ;Restore state
HRRZM R,(D) ;Recause error, will trap this time
JRST UBD ;Continue if continued
UBDWIO: PUSH P,[WIOUNB] ;Make sure without-interrupt'er gets called
POP FXP,T
PUSH FLP,R ;With old value to store
MOVSS (FLP) ;WIOUNB expects it in left half
JRST UBD
UBD4: HLRZ D,(SP)
JUMPN D,UBD ;AMONG OTHER THINGS, ERRPOP'S SETOM MAKES THIS JUMP
PUSH FLP,T ;MUST SAVE T
MOVEI T,(R)
PUSHJ P,AUNBN0 ;FOUND A FUNARG BINDING BLOCK
POP FLP,T ; - USE SPECIAL ROUTINE TO UNBIND IT
JRST UBD
UNBIND: POP SP,T
MOVEM TT,UNBND3 ;HORRIBLE HACK TO SAVE AC TT. THINK ABOUT THIS SOME DAY
UNBND0: TLZ T,-1 ;AUNBIND ENTERS HERE
IFE D10,[
UNBND1: CAIN T,(SP)
JRST UNBND2
POP SP,TT
MOVSS TT
BNDTRAP ,UNBNDP,TT, HLRZM TT,(TT)
JRST UNBND1
]; END IFE D10,
IFN D10,[
PUSH FXP,R ;Save R for comparison (Can't use FLP -- used to pass
; an argument to WIOUNB)
MOVEI R,PWIOINT ;For comparison, factored out of the loop
UNBND1: CAIN T,(SP) ;End of looop?
JRST UNBD2A
POP SP,TT
MOVSS TT
CAIN R,(TT) ;Is this the special case PWIOINT?
JRST UNBNDP ; Yes, hack it
HLRZM TT,(TT)
JRST UNBND1
]; END IFN D10,
UNBNDP: PUSH FXP,T ;FIGURE OUT IF WITHOUT-INTERRUPTS
HRRZI T,(TT)
CAIN T,PWIOINT ;WITHOUT-INTERRUPTS, HANDLE SPECIALLY
JRST UNBWIO
POP FXP,T ;RESTORE STATE
HLRZM TT,(TT) ;RECAUSE ERROR, WILL TRAP THIS TIME
JRST UNBND1 ;CONTINUE IF CONTINUED
UNBWIO: PUSH P,[WIOUNB] ;MAKE SURE WITHOUT-INTERRUPT'ER GETS CALLED
POP FXP,T
PUSH FLP,TT ;WITH OLD VALUE
JRST UNBND1
;;; BIND, AND MAKE-VALUE-CELL ROUTINES.
;;; PUSHJ P,BIND WITH SYMBOL IN A, VALUE IN AR1.
;;; USES ONLY A, TT; MUST SAVE T
;;; JSP TT,MAKVC WITH AN ATOMIC SYMBOL ON THE PDL (WHICH IS POPPED)
;;; AND THE VALUE IN B. RETURNS ADDRESS OF NEW VALUE CELL IN A.
;;; (LATTER CROCK FOR BIND1 ONLY). USES ONLY A,B,TT.
BIND: SKIPN TT,A
JRST BIND5
HLRZ A,(A)
XCTPRO
HRRZ A,(A)
NOPRO
CAIN A,SUNBOUND
JRST BIND1
BIND4: PUSH SP,(A)
HRLM A,(SP)
BNDTRAP STQPUR,WIOBND,A, HRRZM AR1,(A)
POPJ P,
BIND5: MOVEI A,VNIL ;ALLOW PURPGI TRAP TO WORK JUST
CBIND4: JRST BIND4 ;LIKE FOR SETQING T
BIND1: PUSH P,CBIND4 ;SET UP FOR CALL TO MAKVC
PUSH P,B
PUSH P,TT
MOVEI B,QUNBOUND
JSP TT,MAKVC
POPBJ: POP P,B
CPOPBJ: POPJ P,POPBJ
MAKVC: PUSH FXP,TT ;SAVE RETURN ADDR
SPECPRO INTZAX
MAKVC0: SKIPN A,FFVC
JRST MAKVC3
EXCH B,@FFVC
XCTPRO
HRRZM B,FFVC
NOPRO
MAKVC1: HLRZ B,@(P) ;POINTER TO SYMBOL HEADER IS ON STACK
PURTRAP MAKVC9,B, HRRM A,(B)
MAKVCX: SUB P,R70+1 ;POP POINTER, RETURN ADDRESS OF VALUE CELL
POPJ FXP, ; IN A, ADDR OF SY2 BLOCK IN B
IFE PAGING,[
MAKVC3: PUSHJ P,CONS1
SETOM ETVCFLSP
JRST MAKVC1
] ;END OF IFE PAGING
SUBTTL VARIOUS ODDBALL CONSERS
IFN BIGNUM,[
C1CONS: EXCH T,YAGDBT
JSP T,FWCONS
EXCH T,YAGDBT
JRST ACONS
] ;END OF IFN BIGNUM
%NCONS: PUSH P,T
NCONS: TLZ A,-1
BAKPRO
ACONS: SKIPN FFS ;THIS IS A CONS LIKE XCONS
PUSHJ P,AGC ;BUT USES ONLY ACCUMULATOR A
MOVSS A ;SWAP HALVES OF A, THEN
SPECPRO INTACX
EXCH A,@FFS ;CONS WHOLE WORD FROM A
XCTPRO
EXCH A,FFS
NOPRO
POPJ P,
IFN BIGNUM,[
BAKPRO
BGNMAK: ;MAKE A POSITIVE BIGNUM (SAME AS BNCONS)
BNCONS: SKIPN FFB ;BIGNUM CONSER
PUSHJ P,AGC
EXCH A,@FFB
XCTPRO
EXCH A,FFB
NOPRO
POPJ P,
] ;END OF IFN BIGNUM
;;; EXPLODEC ARGUMENT IN A (WITH BASE=10., *NOPOINT=T),
;;; AND RETURN A SIXBIT WORD IN TT. CLOBBERS ALL ACS.
SIXMAK: MOVEI B,IN0+10.
JSP T,SPECBIND
0 B,VBASE
0 B,V.NOPOINT
SETZM SIXMK2
MOVE AR1,[440600,,SIXMK2]
HRROI R,SIXMK1 .SEE PR.PRC
PUSHJ P,PRINTA ;CALL PRINTA TO EXPLODEC THE ARGUMENT
MOVE TT,SIXMK2
JRST UNBIND
SIXMK1: CAIGE A,140 ;THIS SAYS CONVERT LOWER CASE TO UPPER
TRC A,40 ;CONVERT CHAR TO SIXBIT
TLNE AR1,770000
.UDT4: IDPB A,AR1 ;MAYBE SAVE IT, UNLESS ALREADY HAVE SIX
POPJ P,
;;; TAKE SIXBIT IN TT, RETURN AN ATOMIC SYMBOL IN A.
;;; EMBEDDED BLANKS COUNT, BUT TRALING ONES DON'T.
;;; A ZERO WORD BECOMES THE ATOM "*". SAVES F.
SIXATM: SETOM LPNF
MOVE C,PNBP
MOVSI T,(ASCII \*\)
MOVEM T,PNBUF
SETZM PNBUF+1
SIXAT1: JUMPE TT,RINTERN ;RINTERN SAVES F
SETZ T,
LSHC T,6
ADDI T,40 ;CONVERT SIXBIT TO ASCII
IDPB T,C ;STICK CHARACTERS IN PNBUF
JRST SIXAT1
;;; A STRING IS IN PNBUF, TERMINATED BY A NULL.
;;; LOCATE ITS END, AND CALL RINTERN TO MAKE AN ATOM.
PNBFAT: MOVE T,PNBP
PNBFA1: MOVE C,T
ILDB TT,T
JUMPN TT,PNBFA1
SETOM LPNF
JRST RINTERN
;;; TAKE AN S-EXPRESSION IN A, AND EXPLODEC IT INTO PNBUF.
;;; AR2A WILL CONTAIN THE COUNT OF UNUSED CHARACTER POSITIONS IN PNBUF.
;;; PRESERVES ITS ARGUMENT.
PNBFMK: PUSH P,A
PUSH P,CPOPAJ
SETZM PNBUF
MOVE T,[PNBUF,,PNBUF+1]
BLT T,PNBUF+LPNBUF-1
MOVE AR1,PNBP
MOVEI AR2A,LPNBUF*BYTSWD
HRROI R,PNBFM6 .SEE PR.PRC
JRST PRINTA
PNBFM6: JUMPLE AR2A,CPOPJ ;GIVE UP IF NO MORE ROOM IN PNBUF
IDPB A,AR1 ;ELSE STICK CHARACTER IN
SOJA AR2A,CPOPJ
IFN D10,[
;;; CONVERT A PPN IN TT TO AN "ATOM", I.E. AN S-EXPR OF APPROPRIATE FORM. SAVES F.
PPNATM:
IFE SAIL,[
SKIPN CMUP
JRST PPNAT2
HLRZ T,TT
CAME TT,[-1]
CAIG T,10 ;PPN'S WITH PROJECT BETWEEN 1 AND 10
JRST PPNAT2 ; MUST BE EXPRESSED IN DEC FORM
MOVE T,[TT,,PNBUF]
SETZM PNBUF+1 ;NEED THIS BECAUSE OF CMU BUG
DECCMU T, ;TRY CONVERTING PPN TO CMU STRING
JRST PPNAT2 ;ON FAILURE, JUST REVERT TO DEC FORMAT
JRST PNBFAT ;ON SUCCESS, CONS UP ATOM FROM STRING
] ;END OF IFE SAIL
PPNAT2: JUMPN TT,.+3
MOVEI A,Q.
POPJ P,
PUSHN P,1
PUSH FXP,TT
TLZ TT,-1
PUSHJ P,PPNAT4 ;CONVERT PROGRAMMER
POP FXP,TT
HLRZS TT
PUSHJ P,PPNAT4 ;CONVERT PROJECT
JRST POPAJ
PPNAT4:
IFE SAIL,[
CAIN TT,-1 ;777777 => OMITTED HALF OF PPN
SKIPA A,[Q.] ;REPLACE IT WITH *
JSP T,FXCONS ;OTHERWISE USE A FIXNUM
MOVE B,-1(P)
PUSHJ P,CONS
MOVEM A,-1(P)
POPJ P,
] ;END OF IFE SAIL
IFN SAIL,[
CAIN TT,-1 ;777777 => OMITTED HALF OF PPN
JRST PPNAT9 ;REPLACE IT WITH *
JUMPE TT,PPNAT9 ;? MIGHT AS WELL TREAT 0 AS OMITTED
PPNAT6: TLNE TT,770000 ;LEFT JUSTIFY THE SIXBIT CHARACTERS
JRST PPNAT3 ;WHEN DONE, CREATE AN ATOM AND CONS ONTO LIST
LSH TT,6
JRST PPNAT6
] ;END OF IFN SAIL
SA$ PPNAT9: SKIPA A,[Q.]
PPNAT3:
20% PUSHJ P,SIXATM
20$ PUSHJ P,PNBFAT
PPNAT5: MOVE B,-1(P)
PUSHJ P,CONS
MOVEM A,-1(P)
POPJ P,
] ;END OF IFN D10
SUBTTL CATCH, THROW, ERRSET, .SET, AND BREAK ROUTINES
;NORMAL CATCH
CATPUS: PUSH P,B ;COMPILED CODE FOR *CATCH ENTERS HERE
MOVEI A,(A) ; COMPLR TURNS "CATCH" TO "*CATCH"
MOVEI T,(A)
LSH T,-SEGLOG
SKIPGE ST(T) ;SEE IF TAG OR TAGLIST
HRLI A,CATSPC\CATLIS
CATPS1: MOVEM A,CATID ;SET UP A CATCH FRAME
JSP T,ERSTP
MOVEM P,CATRTN
JRST (TT)
;CATCH-BARRIER
CATBAR: PUSH P,B ;ADR TO JUMP TO WHEN THROW IS DONE
HRLI A,CATSPC\CATLIS\CATCAB ;FLAG AS CATCH-BARRIER
MOVEM A,CATID ;THIS IS THE CATCH ID
JSP T,ERSTP ;SETUP A NEW CATCH FRAME
MOVEM P,CATRTN
JRST (TT)
;CATCHALL
; UPON ENTRY: TT HAS ADR-1 OF CATCHALL FUN, T HAS ADR AFTER OTHER FUNS
CTCALL: PUSH P,T
AOS TT ;POINT TO FIRST LOCATION OF CATCHALL FUN
HRLI TT,CATSPC\CATALL\CATCOM ;FLAG AS A COMPILED CATCHALL
MOVEM TT,CATID ;THIS IS THE CATCH ID
JSP T,ERSTP ;SETUP A NEW CATCH FRAME
MOVEM P,CATRTN
JRST -1(TT)
;BREAKUP A CATCHALL
THRALL: SETZM (P) ;TURN INTO A NORMAL CATCH
JRST THROW1 ;THEN BREAK UP LIKE A NORMAL THROW
THROW5: SKIPE D,UIRTN ;IF NO USER INTERRUPT FRAME STACKED,
CAIG D,(TT) ; OR IF IT IS BELOW THE CATCH FRAME,
JRST THROW3 ; THEN JUST EXIT THE CATCH FRAME
JSP TT,UIBRK ;OTHERWISE BREAK OUT OF THE INTERRUPT
THROW1: SKIPN TT,CATRTN ;SKIP IF CATCH FRAME BELOW US
JRST THROW4
MOVSI T,CATUWP
TDNE T,(TT) ;UNWIND-PROTECT FRAME?
JRST THRNXT ;YES, SKIP IT COMPLETELY
JUMPE B,THROW5
THROW6: SKIPN T,(TT) ;(CATCH FOO NIL) = (CATCH FOO)
JRST THROW5 ;CATCH ID MATCHES THROW ID
TLNE T,CATSPC ;SPECIAL PROCESSING NEEDED?
JRST THRSPC ;YES, DO SO
CAIN B,(T) ;CATCH ID MATCHES?
JRST THROW5 ;YES
THRNXT: MOVE TT,<-LEP1+1>+<CATRTN-ERRTN>(TT) ;GO BACK ONE CATCH
JUMPN TT,THROW6 ;FALL THROUGH IF NO MORE
THROW4: JUMPE B,LSPRET ;IF TAG IS (), THEN JUST THROW TO
THROW7: EXCH A,B ;TOPLEVEL; OTHERWISE, ERROR
%UGT EMS29
EXCH A,B
JRST THROW1
THROW3: PUSHJ FXP,UNWPRO ;UNWIND PROTECT CHECKER
MOVE P,TT
THRXIT: SETZM PANICP
MOVSI D,-LEP1+1(P)
HRRI D,ERRTN
BLT D,ERRTN+LEP1-1
MOVE C,CATID ;GET CURRENT CATCH ID
SUB P,EPC1
POP P,FXP
POP P,FLP
POP P,TT
POP P,PA3
PUSHJ P,UBD0 ;RESTORE CONDITIONS AND PROCEED
TLNN C,CATALL ;A CATCHALL?
POPJ P, ;NOPE, RETURN THROWN VALUE
EXCH A,B ;TAG AS FIRST ARG, VAL AS SECOND
TLNE C,CATCOM ;COMPILED?
JRST (C) ;YES, RUN COMPILED CODE
CALLF 2,(C) ;ELSE CALL THE USER'S FUNCTION
POPJ P, ;RETURN NEW VAL IF THE CATCHALL FUN RETURNS
THRSPC: TLNE T,CATALL ;CATCHALL?
JRST THROW5 ;YES, WE HAVE FOUND A GOOD FRAME TO STOP AT
TLNE T,CATUWP ;UNWIND-PROTECT?
JRST THRNXT ;YES, IGNORE THE FRAME
TLNE T,CATCAB ;CATCH-BARRIER?
JRST THRCAB
TLNN T,CATLIS ;A LIST OF TAGS?
LERR [SIXBIT\SPECIAL CATCH FRAME, BUT NO VALID TYPE BITS EXIST!\]
PUSH P,A
PUSH P,B ;SAVE NEEDED ACS
MOVEI A,(B) ;CATCH TAG
MOVEI B,(T) ;LIST OF TAGS
PUSHJ P,MEMQ1 ;CHECK FOR MEMBERSHIP (DOES NOT DESTROY TT)
MOVE T,A ;SAVE THE RESULTS
POP P,B
POP P,A
JUMPE T,THRNXT ;UPWARD TO NEXT CATCH FRAME
JRST THROW5 ;ELSE FOUND A MATCH, SO DO THE ACTUAL THROW
THRCAB: PUSH P,A
PUSH P,B ;SAVE NEEDED ACS
MOVEI A,(B) ;CATCH TAG
MOVEI B,(T) ;LIST OF TAGS
PUSHJ P,MEMQ1 ;CHECK FOR MEMBERSHIP (DOES NOT DESTROY TT)
MOVE T,A ;SAVE THE RESULTS
POP P,B
POP P,A
JUMPE T,THROW7 ;CATCH-BARRIER, NOT IN LIST OF TAGS, ERROR
JRST THROW5 ;ELSE FOUND A MATCH, SO DO THE ACTUAL THROW
JRST THRALL ;COMPILED REMOVAL OF A CATCHALL
JRST THROW1 ;COMPILED THROWS COME HERE
ERUNDO: SKIPN ERRTN ;COMPILED ERR, AND NORMAL ERRSET EXIT COME HERE
JRST LSPRET ;RETURN TO TOPLEVEL
ERR0:
IFN USELESS, SETZM TYOSW
JUMPN A,ERUN0 ;ELSE, BREAK UP AN ERRSET
SKIPE V.RSET
SKIPN VERRSET ;ERRSET BEING BROKEN BY AN ERROR
JRST ERUN0
PUSH P,A
MOVEI D,1001 ;ERRSET USER INTERRUPT
PUSHJ P,UINT
POP P,A
JRST ERUN0
SKIPA TT,CATRTN ;PHOOEY, COMPILED CODE COMES HERE WHEN A
GOBRK: MOVE TT,ERRTN ;GO OR RETURN OCCURS WITHIN AN ERRSET OR CATCH
JUMPE TT,ER4
EXCH T,-LERSTP(TT)
JRST ERR1
IOGBND: JSP T,SPECBIND ;BIND ALL I/O CONTROL VARIABLES TO NIL:
TTYOFF ; ^W
TAPRED ; ^Q
TAPWRT ; ^R
EPOPJ: POPJ P, .SEE $ERRFRAME
;;; MOVEI D,LOOP ;ROUTINE TO LOOP
;;; PUSHJ P,BRGEN
;;; GENERATES A BREAK LOOP SURROUNDED BY A CATCH AND AN
;;; ERRSET. ERRORS CAUSE THE LOOP TO BE RE-ENTERED.
;;; BRGEN RETURNS WHEN THE LOOP ROUTINE PERFORMS A
;;; THROW TO THE TAG BREAK.
.SEE BREAK
.SEE $BREAK
BRGEN: MOVEI A,QBREAK ;CATCH ID = BREAK
JSP TT,CATPS1 ;SET UP CATCH FRAME
PUSH P,D
PUSH P,. ;RETURN POINT FOR ERROR
JSP T,ERSTP ;SET UP ERRSET FRAME
SETOM ERRSW
MOVEM P,ERRTN
JRST @-LERSTP-1(P) ;CALL RANDOM ROUTINE
;;; BREAK LOOP USED BY *BREAK
BRLP1: PUSH P,FLP
PUSH P,FXP
PUSH P,SP
PUSHJ P,TLEVAL ;EVALUATE FORM READ
MOVEM A,V. ;STICK VALUE IN *
PUSHJ P,TLPRINT ;PRINT VALUE
HRRZ TT,-2(P)
HRRZ D,-1(P)
HRRZ R,(P)
POPI P,3
PUSHJ P,PDLCHK ;CHECK PDL LEVELS
JRST TLTERPRI ;TERPRI IF APPROPRIATE
BRLP: PUSH P,BRLP ;***** BASIC BREAK LOOP *****
SKIPE A,BLF ;IF USER SUPPLIED A BREAK LOOP FORM,
JRST EVAL ; EVALUATE IT (RETURNS TO BRLP)
PUSHJ P,TLREAD ;OTHERWISE READ A FORM
JRST .+4
SETZ AR1, ;ON EOF, LOOP BACK AFTER TERPRING
PUSHJ P,TERP1
JRST .-4
SKIPE VDOLLRP ;IF THE FORM IS EQ TO THE
CAME A,VDOLLRP ; NON-NIL VALUE OF THE VARIABLE P,
JRST BRLP4 ; THEN THAT MEANS RETURN NIL
MOVEI A,NIL
BRLP2: MOVEI B,QBREAK
JRST THROW1 ;ESCAPE FROM BRGEN LOOP
BRLP4: HLRZ B,(A) ;(RETURN <FOO>) MEANS RETURN THE
CAIE B,QRETURN ; VALUE OF FOO
JRST BRLP1 ;OTHERWISE EVAL AND PRINT THE FORM
JSP T,%CADR
BRLP3: PUSHJ P,EVAL
JRST BRLP2
;;; JSP T,.STORE ;USED BY COMPILED CODE
;;; ON CALLING .STORE WE MUST HAVE JUST COMPLETED AN "INTERPRETED"
;;; ARRAY REFERENCE OF SOME KIND, BY PUSHJ'ING INTO THE ARRAY HEADER
;;; AND GOING TO ONE OF THE NDIMX ROUTINES. THIS LEAVES THE SAR
;;; OF THE ARRAY REFERENCED IN LISAR, AND THE INDEX WORD IN R.
;;; A CONTAINS THE VALUE TO STORE INTO THE ARRAY.
.STORE: SKIPN D,LISAR
JRST .STOLZ ;ERROR IF NO ARRAY REFERENCED LATELY
HLL D,ASAR(D)
TLNN D,AS.SX ;WAS IT AN S-EXPRESSION ARRAY?
JRST .STOR2
.STOR0: MOVEI TT,(R) ;YEP, STORE A HALF-WORD QUANTITY
JUMPL R,.STOR1
HRLM A,@TTSAR(D)
JRST (T)
.STOR1: HRRM A,@TTSAR(D)
JRST (T)
.STOR2: TLNN D,AS.FX+AS.FL ;SKIP IF FIXNUM OR FLONUM
IFN DBFLAG+CXFLAG, JRST .STOR4
.ELSE .VALUE
MOVEI F,(T)
TLNN D,AS.FX
JSP T,FLNV1X ;GET FLONUM QUANTITY, WITH SKIP RETURN
JSP T,FXNV1 ;OR MAYBE GET FIXNUM QUANTITY
EXCH TT,R
MOVEM R,@TTSAR(D) ;STORE QUANTITY INTO ARRAY
JRST (F)
IFN DBFLAG+CXFLAG,[
.STOR4: TLNN D,AS.DB+AS.CX ;SKIP IF DOUBLE OR COMPLEX
IFN DXFLAG, JRST .STOR6
.ELSE .VALUE
MOVEI F,(T)
DB$ CX$ TLNN D,AS.DB
DB$ CX$ JSP T,CXNV1X ;GET COMPLEX QUANTITY, WITH SKIP RETURN
DB$ JSP T,DBNV1 ;OR MAYBE GET DOUBLE QUANTITY
DB% JSP T,CXNV1
MOVE T,LISAR
EXCH TT,R
MOVEM R,@TTSAR(T) ;STORE QUANTITY INTO ARRAY
ADDI TT,1
MOVEM D,@TTSAR(T)
JRST (F)
] ;END OF IFN DBFLAG+CXFLAG
IFN DXFLAG,[
.STOR4: TLNN D,AS.DX ;SKIP IF DUPLEX
.VALUE ;IF NOT THAT, THEN ERROR (UNKNOWN ARRAY TYPE)
PUSH P,F
PUSH FXP,R
JSP T,DXNV1
MOVE T,LISAR
EXCH TT,(FXP)
KA MOVEM R,@TTSAR(T) ;STORE QUANTITY INTO ARRAY
KA ADDI TT,1
KA MOVEM F,@TTSAR(T)
KA ADDI TT,1
KIKL DMOVEM R,@TTSAR(T)
KIKL ADDI TT,2
POP FXP,@TTSAR(T)
ADDI TT,1
MOVEM D,@TTSAR(T)
POPJ P,
] ;END OF IFN DXFLAG
;;; JSP T,.SET ;USED BY COMPILED CODE
;;; ATOM TO SET IN AR1, AND VALUE TO SET TO IN A.
;;; THE VALUE MUST NOT BE A PDL QUANTITY.
.SET: EXCH A,AR1
.SET1: PUSH P,A
PUSHJ P,BIND ;BIND TAKES SYMBOL IN A, VALUE IN AR1
POP P,A ;THIS CROCKISH IMPLEEMNTATION
EXCH A,AR1 ; PERFORMS A SET BY DOING A SPECBIND,
JRST SETXIT ; THEN DISCARDING THE BINDING FROM SP
;;; JSP TT,FWNACK ;OR LWNACK
;;; FAXXXX,,QFOO ;OR LAXXXX,,QFOO
;;; CHECKS FOR AN FSUBR (LSUBR) THAT THE RIGHT NUMBER OF ARGUMENTS
;;; WERE PROVIDED, AND GENERATES AN APPROPRIATE WNA ERROR IF NOT.
;;; THE FAXXXX (LAXXXX) HAS THE LOW BIT 0 FOR LSUBR, 1 FOR FSUBR.
;;; BIT 2_N IS SET IFF GETTING EXACTLY N ARGUMENTS IS ACCEPTABLE.
FWNACK: SETZ T, ;COUNT UP ACTUAL NUMBER OF ARGS
MOVEI D,(A) ;LEAVES NEGATIVE OF NUMBER OF ARGS IN T,
FWNAC1: JUMPE D,LWNACK ; SO CAN FALL INTO LSUBR CHECKER
HRRZ D,(D)
SOJA T,FWNAC1
LWNACK: MOVE D,(TT) ;GET WORD OF BITS
ASH D,(T)
TLNE D,2 ;SKIP UNLESS WNA
JRST 1(TT)
JRST WNAL0 ;GO PRODUCE A WRNG-NO-ARGS ERROR
;;; PUSH CRUFT FOR AN ERRSET/CATCH/READEOF FRAME
;;; BEWARE! THE COMPILER DEPENDS ON THE LENGTH OF THE
;;; ERRSET FRAME BEING A CONSTANT.
ERSTP: PUSH P,PA3 ;"ERRSET" PUSH
PUSH P,SP ;MUST SAVE TT - SEE $TYI
PUSH P,FLP
PUSH P,FXP
REPEAT LEP1, PUSH P,ERRTN+.RPCNT
LERSTP==.-ERSTP ;LENGTH OF ERRSET PUSH
HLL T,UNREAL ;SO WE DECIDED TO PACK BOTH OF "UNREAL"
HLLM T,KMPLOSES(P) ; AND "ERRSW" INTO ONE PDL SLOT
JRST (T)
ERUN0: HRRZ TT,ERRTN ;GENERAL BREAK OUT OF AN ERRSET
SKIPE D,UIRTN
CAIL TT,(D)
JRST ERR1A
JSP TT,UIBRK ;MAYBE BREAK UP A USER INTERRUPT FIRST
JRST ERUN0
ERR1A: HRRZ TT,ERRTN ;WHERE WE ARE UNWINDING TO
PUSHJ FXP,UNWPRO ;HANDLE UNWIND-PROTECT
MOVE P,ERRTN
ERR1: SETZM PANICP
HLL D,KMPLOSES(P) ;SO WE DECIDED TO PACK BOTH OF "UNREAL"
HLLEM D,UNREAL ; AND "ERRSW" INTO ONE PDL SLOT
HRRES KMPLOSES(P)
MOVSI D,-LEP1+1(P)
HRRI D,ERRTN
BLT D,ERRTN+LEP1-1
SUB P,EPC1
POP P,FXP
POP P,FLP
POP P,TT
POP P,PA3
JRST UBD0 ;RESTORE CONDITIONS AND PROCEED
EPC1: LEP1,,LEP1
UIBRK: EXCH D,TT ;UNWIND-PROTECT NEEDS STACK POINTER IN AC TT
PUSHJ FXP,UNWPRO ;HANDLE UNWIND PROTECTION
EXCH D,TT
HRRM TT,-1(D)
HRRO FXP,1(D) ;JUST SET LEFT HALF OF PDL POINTERS
HLRO FLP,1(D) ; TO -1 FOR BIBOP, AND LET PDLOV
HRROI P,-UIFRM(D)
IFN PDLBUG,[
FXPFIXPDL AR1
FLPFIXPDL AR1
PFIXPDL AR1
] ;END OF IFN PDLBUG
MOVEM F,UISAVT-T+F(FXP) ;LET F BE SAFE OVER RESTORATION
MOVEM T,UISAVT(FXP) ;T TOO
MOVEM C,UISAVA-A+C(P) ;C TOO
MOVEM B,UISAVA-A+B(P) ;B TOO
MOVEM A,UISAVA(P) ;A TOO
JRST UINT0X
;THIS ROUTINE FINDS ALL UNWIND-PROTECTS BETWEEN THE CURRENT STACK POSITION
; AND THE DESIRED STACK POSITION (AS FOUND IN TT). IF AN UNWIND-PROTECT IS
; FOUND, THEN:
; A) THE UNWIND-PROTECT STACK FRAME IS POP'ED *WITHOUT UPDATING FXP OR FLP*
; B) SP IS UNWOUND TO THE CURRENT BINDING LEVEL
; C) THE FUNCTION IS CALLED WITH EVERYTHING SAVED
; D) WHEN THE FUNCTION RETURNS, ACS ARE RESTORED AND THE ROUTINE CONTINUES
; SEARCHING FOR THE NEXT UNWIND PROTECT
; WHEN NO MORE UNWIND PROTECTS EXIST IN THE SPECIFIED RANGE OF THE PDL,
; THIS ROUTINE RETURNS TO ITS CALLER, WHICH IS EXPECTED TO RESTORE
; FXP AND FLP (AND POSSIBLY OTHERS) FROM THE STACK FRAME THAT WAS USED TO STOP
; THE UNWIND-PROTECT SEARCH
; CALLED WITH PUSHJ FXP,
; TT CONTAINS LOWEST ADR TO SEARCH
; PRESERVES ALL AC'S
UNWPRO:
;;; AMOUNT OF STUFF THAT GETS PUSHED MUST BE WELL DEFINED, CHANGE UNWPUS
;;; IF IT CHANGES
.SEE UNWPUS
PUSH FXP,D
PUSH FXP,T
PUSH FXP,R
PUSH FXP,TT
;;;
HRRZS TT ;ONLY PDL PART
MOVEI R,(SP) ;CURRENT VALUE OF SP IN CASE NO FRAMES FOUND
UNWPR2: SKIPE D,CATRTN
UNWPR1: CAILE TT,(D) ;HAVE WE GONE TOO FAR?
JRST UNWPRT ;NO MORE FRAMES POSSIBLE, SO RETURN
HRLZI T,CATUWP ;IS THIS AN UNWIND-PROTECT FRAME?
TDNN T,(D)
JRST UNWNXT ;NOT UNWIND-PROTECT, SO SKIP THIS FRAME
HRRO P,D ;RESET PDL, WILL WORK BY PDL OV NEXT PUSH
IFN PDLBUG,[
PFIXPDL T
] ;END IFN PDLBUG
;;; PUSH NOTE
.SEE UNWPUS
PUSH FXP,UNREAL ;FROM THIS POINT ON ALLOW NO USER INT'S
SETOM UNREAL
HRRZM FXP,REALLY
MOVE T,(P) ;GET POINTER TO UNWIND HANDLER
MOVSI D,-LEP1+1(P) ;RESTORE HAS FRAME (SNARFED FROM ERR1)
HRRI D,ERRTN
BLT D,ERRTN+LEP1-1
SUB P,EPC1
POP P,D ;GET OLD FXP
POP P,FLP ;RESTORE FLP
POP P,R ;SAVE LEVEL TO SP UNWIND TO
POP P,PA3
PUSHJ FXP,SAV5 ;SAVE ALL PROTECTED ACS
MOVEI B,(T) ;POINTER TO COMPILED FUNCTION OR LIST
;;; PUSH NOTE
.SEE UNWPUS
PUSHJ P,SAVX5 ;AND UNPROTECTED ONES
HRRI T,(D)
MOVEI TT,(R)
PUSHJ P,UBD0 ;Unwind SP
PUSH FLP,T
SETOI A,
JSP T,SPECBIND
0 A,PWIOINT
SETZM REALLY
POP FLP,T
TLNN T,CATCOM ;COMPILED CODE?
JRST UNWNCM ;NOPE, USE PROGN
UNWPUS==:13 ;NUMBER OF PUSHES DONE ON FXP
MOVEI TT,(T)
HRLI TT,-<UNWPUS-1>(FXP);BLT POINTER TO DATA THAT MUST BE MOVED
AOS TT
MOVEI D,UNWPUS-1(TT) ;BLT END POINTER
BLT TT,(D) ;BLT ALL IMPORTANT FXP DATA
HRROI FXP,(D) ;NEW FXP
IFN PDLBUG,[
PUSH P,TT
FXPFIXPDL TT
POP P,TT
] ;END OF IFN PDLBUG
PUSHJ P,(B) ;INVOKE THE UNWINDPROTECTION CODE
SKIPA
UNWNCM: PUSHJ P,IPROGN
PUSHJ P,UNBIND ;UNDO THE NOINTERRUPT PROTECTION
PUSHJ P,RSTX5 ;RESTORE ACS
PUSHJ FXP,RST5
POPI FXP,1 ;FLUSH SAVED UNREAL FROM STACK
JRST UNWPR2
UNWNXT: MOVE D,<-LEP1+1>+<CATRTN-ERRTN>(D) ;GO BACK ONE CATCH
JUMPN D,UNWPR1 ;IF MORE FRAMES TO CHECK THEN GO ON
UNWPRT: POP FXP,TT
POP FXP,R
POP FXP,T
POP FXP,D
POPJ FXP,
SUBTTL VARIOUS COMMON EXITS
CIN0: IN0 ;SURPRISE!
;;; THESE ROUTINES ARE USEFUL FOR CONSING UP LISTS OF NUMBERS
;;; (AS STATUS FUNCTIONS OFTEN DO, FOR INSTANCE).
;;; A CALL TO CONS1FX WILL TAKE A NUMBER IN TT AND MAKE A SINGLETON
;;; LIST OF IT. SUCCESSIVE CALLS TO CONSFX WILL THEN TACK NEW NUMBERS
;;; ONTO THE FRONT OF THE LIST. CONS1PFX AND CONSPFX ARE SIMILAR,
;;; BUT POP THE NUMBER FROM FXP. IN THIS WAY ONE CAN PRODUCE NUMBERS
;;; IN FORWARDS ORDER, PUSHING THEM ON FXP, THEN USE THESE ROUTINES
;;; TO CONS THEM UP IN REVERSE ORDER, PRODUCING A FORWARDS LIST OF THEM.
CONS1PFX: TDZA B,B
CONS1FX: TDZA B,B
CONSPFX: POP FXP,TT
CONSFX: JSP T,FXCONS
CONSIT: PUSHJ P,CONS
BAPOPJ: MOVEI B,(A)
POPJ P,
;;; OTHER COMMON EXITS
ZPOPJ: TDZA TT,TT ;ZERO TT, THEN POPJ
POPNVJ: JSP T,FXNV1 ;FXNV1, THEN POPJ
CCPOPJ: POPJ P,CCPOPJ ;NOT CPOPJ! WILL SCREW BAKTRACE
0POPJ: SKIPA A,CIN0 ;PUT A LISP FIXNUM 0 IN A AND POPJ
POP2J: POPI P,2 ;POP 2 PDL SLOTS AND POPJ
CPOPJ: POPJ P,CPOPJ .SEE BAKTRACE ;SACRED TO BAKTRACE
POP3J: POPI P,3
POPJ P,
POPAJ1: AOSA -1(P) ;POP INTO A, THEN SKIP RETURN
S1PAJ: POPI P,1 ;POP 1 PDL SLOT, POP INTO A, AND POPJ
POPAJ: POP P,A ;POP A, THEN POPJ
CPOPAJ: POPJ P,POPAJ
POP1J1: AOSA -1(P) ;POP 1 PDL SLOT, THEN SKIP RETURN
POPJ1: AOSA (P) ;SKIPPING POPJ RETURN
POP1J: POPI P,1 ;POP 1 PDL SLOT AND POPJ
CPOP1J: POPJ P,POP1J
M1TTPJ: SKIPA TT,XC-1 ;-1 IN TT, THEN POPJ
POPCJ: POP P,C ;POP C, THEN POPJ
CPOPCJ: POPJ P,POPCJ
UNLKFALSE: TDZA A,A ;UNLOCK INTERRUPTS, RETURNING FALSE (NIL)
UNLKTRUE: MOVE A,VT.ITY ;UNLOCK INTERRUPTS, RETURNING TRUTH (T)
UNLKPOPJ
PX1J: POPI FXP,1 ;FLUSH 1 FXP SLOT, THEN POPJ P,
CPXDFLJ: POPJ P,PXDFLJ
PXDFLJ: HLLZ D,(P) ;POP FXP INTO D, THEN POPJ P,
JRST 2,POPXDJ(D) ; AND RESTORE FLAGS FROM THE P SLOT
POPXDJ: POP FXP,D ;POP FXP SLOT INTO D, THEN POPJ P,
CPXDJ: POPJ P,POPXDJ
SUBTTL VARIOUS COMMON SAVE AND RESTORE ROUTINES
SAV5: PUSH P,A
SAV5M1: PUSH P,B
SAV5M2: PUSH P,C
SAV5M3: PUSH P,AR1
PUSH P,AR2A
CPOPXJ: POPJ FXP,
SAV3: PUSH P,C
SAV2: PUSH P,B
SAV1: PUSH P,A
POPJ FXP,
RST3: POP P,A
POP P,B
POP P,C
POPJ FXP,
RST2: POP P,A
POP P,B
POPJ FXP,
RST1: POP P,A
POPJ FXP,
RST5: POP P,AR2A
POP P,AR1
POP P,C
POP P,B
POP P,A
POPJ FXP,
R5M1PJ: PUSH FXP,CCPOPJ
RST5M1: POP P,AR2A
POP P,AR1
POP P,C
POP P,B
CR5M1PJ: POPJ FXP,R5M1PJ
RST5M2: POP P,AR2A
POP P,AR1
POP P,C
POPJ FXP,
RST5M3: POP P,AR2A
POP P,AR1
POPJ FXP,
SAVX5: PUSH FXP,T
PUSHJ P,SAVX3
PUSH FXP,F
POPJ P,
SAVX3: PUSH FXP,TT
PUSH FXP,D
PUSH FXP,R
POPJ P,
RSTX5: POP FXP,F
POP FXP,R
POP FXP,D
PXTTTJ: POP FXP,TT
POPXTJ: POP FXP,T
POPJ P,
RSTX3: POP FXP,R
RSTX2: POP FXP,D
RSTX1: POP FXP,TT
CPOPNVJ: POPJ P,POPNVJ
SUBTTL VARIOUS KINDS OF FRAME MARKERS
$ERRFRAME=525252,,EPOPJ ;ERROR FRAME
$EVALFRAME=525252,,POP2J ;EVAL FRAME
;; $APPLYFRAME=525252,,AFPOPJ ;APPLY FRAME DEFINED BELOW
$UIFRAME=525252,,CPOPAJ ;USER INTERRUPT FRAME
;;; FORMAT OF EVALFRAME:
;;; <FLP>,,<FXP>
;;; <SP>,,<FORM>
;;; $EVALFRAME
L$EVALFRAME==3 ;LENGTH OF EVALFRAME
;;; FORMAT OF APPLYFRAME:
;;; -- ARGS --
;;; <FLP>,,<FXP>
;;; <SP>,,<FUNCTION>
;;; $APPLYFRAME
.SEE L$EVALFRAME
;;; WHERE -- ARGS -- MAY BE ONE OF THREE THINGS, DEPENDING
;;; ON ITS LEFT HALF:
;;; LH=0 RH=LIST OF ARGS
;;; LH<0 LH,,RH=AOBJN POINTER TO ARGS VECTOR (E.G. FOR LSUBR)
;;; LH>0 RH=LAST ARG; OTHER ARGS ARE BELOW THIS ON THE
;;; STACK. IN THIS CASE THE APPLYFRAME MAY BE MORE
;;; THAN FOUR WORDS LONG.
;;; EXAMPLE: MOVEI A,QFOO
;;; MOVEI B,QBAR
;;; CALL 2,QUUX
;;; CAUSES THIS APPLYFRAME TO APPEAR ON THE STACK:
;;; 0,,QFOO
;;; 2,,QBAR
;;; <FLP>,,<FXP>
;;; <SP>,,QUUX
;;; $APPLYFRAME
AFPOPJ: HLRE T,-2(P) ;APPLYFRAME POPJ
SKIPG T ;FIGURE OUT LENGTH OF
MOVEI T,1 ; APPLY FRAME
ADDI T,2
HRLI T,(T)
SUB P,T ;POP CRUFT FROM PDL
POPJ P, ;RETURN
$APPLYFRAME=525252,,AFPOPJ ;APPLY FRAME
SUBTTL NUMERIC TYPE-TESTING, CONVERSION, AND VALUE ROUTINES
IFN BIGNUM+DBFLAG+CXFLAG,[
FLTSK1: %WTA NMV5 ;UNACCEPTABLE NUMERIC VALUE
IFE NARITH, JRST 2,@[FLTSKP] ;CLEAR PC FLAGS
] ;END OF IFN BIGNUM+DBFLAG+CXFLAG
FLTSK2: %WTA NMV3 ;NON-NUMERIC VALUE
IFE NARITH, JRST 2,@[FLTSKP] ;CLEAR PC FLAGS
FLTSKP: MOVEI TT,(A) ;"FLOAT SKIP" ROUTINE
LSH TT,-SEGLOG ; SKIPS 0 FOR FIXNUMS, 1 FOR FLONUMS (OR DOUBLES)
HRRZ TT,ST(TT) ;LEAVES NUMERIC VALUE IN TT
IFE NARITH, 2DIF JRST @(TT),FLTSTB,QLIST
IFN NARITH, 2DIF [JRST 2,@(TT)]FLTSTB,QLIST ;DISPATCH AND CLEAR PC FLAGS
FLTSTB: FLTSK2 ;LIST ;ERROR
FLTSFX ;FIXNUM ;SKIPS 0
FLTSFL ;FLONUM ;SKIPS 1
DB$ FLTSFL ;DOUBLE ;SKIPS 1
CX$ FLTSK1 ;COMPLEX;ERROR
DX$ FLTSK1 ;DUPLEX ;ERROR
BG$ FLTSK1 ;BIGNUM ;ERROR
FLTSK2 ;SYMBOL ;ERROR
HN$ REPEAT HNKLOG+1, FLTSK2 ;HUNKS ;ERROR
FLTSK2 ;RANDOM ;ERROR
FLTSK2 ;ARRAY ;ERROR
IFN .-FLTSTB-NTYPES, WARN [WRONG LENGTH TABLE]
IFN BIGNUM*<1-NARITH>, NVSKBG:
IFN BIGNUM*NARITH, NMSKBG:
FLTSFX: MOVE TT,(A)
JRST (T)
IFN BIGNUM*<1-NARITH>, NVSKFX:
FLTSFL: MOVE TT,(A)
JRST 1(T)
IFN BIGNUM*<1-NARITH>,[
NVSKP2: %WTA NMV3 ;NON-NUMERIC VALUE
NVSKIP: MOVEI TT,(A) ;"NUMERIC VALUE SKIP"
LSH TT,-SEGLOG ;SKIPS: 0 = BIGNUM, 1 = FIXNUM, 2 = FLONUM, ELSE ERROR
HRRZ TT,ST(TT) ;LEAVES NUMERIC VALUE IN TT
2DIF JRST @(TT),NVSKTB,QLIST .SEE STDISP
NVSKTB: NVSKP2 ;LIST ;ERROR
NVSKFX ;FIXNUM ;SKIPS 1
NVSKFL ;FLONUM ;SKIPS 2
DB$ NVSKP2 ;DOUBLE
CX$ NVSKP2 ;COMPLEX
DX$ NVSKP2 ;DUPLEX
BG$ NVSKBG ;BIGNUM ;SKIPS 0, LEAVES BIGNUM HEADER IN TT
NVSKP2 ;SYMBOL ;ERROR
HN$ REPEAT HNKLOG+1, NVSKP2 ;HUNKS ;ERROR
NVSKP2 ;RANDOM ;ERROR
NVSKP2 ;ARRAY ;ERROR
IFN .-NVSKTB-NTYPES, WARN [WRONG LENGTH TABLE]
NVSKFL: MOVE TT,(A)
JRST 2(T)
] ;END OF IFN BIGNUM*<1-NARITH>
IFN NARITH,[
;;; NUMERIC SKIP ROUTINE
;;; JSP T,NMSKIP
;;; BG$ ... ;HERE FOR BIGNUMS; LEAVES HEADER IN TT
;;; DX$ ... ;HERE FOR DUPLEX
;;; CX$ ... ;HERE FOR COMPLEX
;;; DB$ ... ;HERE FOR DOUBLE; LEAVES FIRST WORD IN TT
;;; ... ;HERE FOR FLONUM; LEAVES VALUE IN TT
;;; ... ;HERE FOR FIXNUM; LEAVES VALUE IN TT
;;; ALSO CLEARS THE PC FLAGS
NMSKP2: %WTA NMV3 ;NON-NUMERIC VALUE
NMSKIP: MOVEI TT,(A)
LSH TT,-SEGLOG
HRRZ TT,ST(TT)
2DIF [JRST 2,@(TT)]NMSKTB,QLIST
;PC FLAGS IN THIS TABLE MUST BE ZERO
NMSKTB: NMSKP2 ;LIST
NMSKFX ;FIXNUM
NMSKFL ;FLONUM
DB$ NMSKDB ;DOUBLE
CX$ NMSKCX ;COMPLEX
DX$ NMSKDX ;DUPLEX
BG$ NMSKBG ;BIGNUM
NVSKP2 ;SYMBOL
HN$ REPEAT HNKLOG+1, NVSKP2 ;HUNKS
NVSKP2 ;RANDOM
NVSKP2 ;ARRAY
IFN .-NVSKTB-NTYPES, WARN [WRONG LENGTH TABLE]
NMSKFX: MOVE TT,(A)
JRST BIGNUM+DXFLAG+CXFLAG+DBFLAG+1(T)
NMSKFL: MOVE TT,(A)
JRST BIGNUM+DXFLAG+CXFLAG+DBFLAG(T)
DB$ NMSKDB: MOVE TT,(A)
DB$ JRST BIGNUM+DXFLAG+CXFLAG(T)
CX$ NMSKCX: JRST BIGNUM+DXFLAG(T)
DX$ NMSKDB: JRST BIGNUM(T)
] ;END OF IFN NARITH
LR70==:20 ;LAP AND FASLAP HAVE THIS QUANTITY BUILT IN
D10.0: 10.0
0
D1.0E8: 1.0^8
0
CDUPL1: DUPL1 ;FOR (% 0 0 DUPL1)
CCMPL1: CMPL1 ;FOR (% 0 0 CMPL1)
CDBL1: DBL1 ;FOR (% 0 0 DBL1)
CFIX1: FIX1 ;FOR (% 0 0 FIX1)
CFLOAT1: FLOAT1 ;FOR (% 0 0 FLOAT1)
R70: REPEAT LR70, .RPCNT,,.RPCNT ;COMMON LAP CONSTANTS ALSO USED BY LISP CODE
ZZZ==5
IFL ZZZ-NACS, ZZZ==NACS ;NEED AT LEAST <NACS> OF THESE
REPEAT ZZZ, .RPCNT-ZZZ
XC:: ;WRITE "XC-N" TO GET THE CONSTANT -N FOR SMALL N
;;; INTERNAL FLONUM-TO-FIXNUM CONVERSION; DOES NO ERROR CHECKS.
;;; CONVERTS NUMBER IN TT TO BE A FIXNUM, CLOBBERING D.
;;; THE CONVERSION IS A "FLOOR" OR "ENTIER" FUNCTION.
;;; THAT IS, 3.5 => 3, BUT -3.5 => -4.
IFIX: MULI TT,400 ;EXPONENT IN TT, MANTISSA IN D
TSC TT,TT ;THIS HACK GETS MAGNITUDE OF EXPONENT
ASH D,-243(TT) ;SHIFT THE MANTISSA
MOVE TT,D ;RESULT IN TT
JRST (T)
;;; INTERNAL FIXNUM-TO-FLONUM CONVERSION. SAVES D.
IFLOAT: TLNE TT,777000 ;FOR POSITIVE INTEGERS 27. BITS OR LESS,
JRST IFLT1 ; CAN JUST USE FSC TO SCALE
IFLT5: FSC TT,233 ;FSC NORMALIZES RESULT
JRST (T)
IFLT1: TLC TT,777000 ;THE SAME HACK WORKS FOR NEGATIVE NUMBERS
TLCN TT,777000 ; WITH NO MORE THAN 27. SIGNIFICANT BITS
JRST IFLT5
IFLT2: MOVEM D,IFLT9 ;FOR 28. TO 35. BITS OF SIGNIFICANCE,
JUMPL TT,IFLT3 ; WE CONVERT THE LEFT AND RIGHT HALVES
HLRZ D,TT ; SEPARATELY, AND THEN ADD THEM, TRUNCATING
MOVEI TT,(TT)
IFLT4: FSC D,255 ;SCALE RIGHT HALF
FSC TT,233 ;SCALE LEFT HALF
FAD TT,D ;ADD TOGETHER
MOVE D,IFLT9 ;RESTORE D
JRST (T)
IFLT3: HLRO D,TT ;FOR NEGATIVE NUMBERS, WE MUST
HRROI TT,(TT) ; PRODUCE THE CORRECT SIGN
AOJA D,IFLT4
;;; NUMERIC VALUE ROUTINES. THESE CHECK AN S-EXPRESSION
;;; FOR BEING THE DESIRED NUMERIC TYPE, AND PRODUCE A
;;; WRNG-TYPE-ARG ERROR IF APPROPRIATE. OTHERWISE
;;; THE VALUE OF THE NUMBER IS LIFTED INTO TT (D,R,F).
COMMENT |FXNV1: FXNV2: FXNV3: FXNV4:|
;;; FXNV1 (2,3,4) TAKES S-EXP IN A (B,C,AR1) AND PUTS VALUE IN TT (D,R,F).
IRPC AC,,[1234]
EFXNV!AC:
IFN AC-A, EXCH A,AC
%WTA FXNMER
IFN AC-A, EXCH A,AC
FXNV!AC: MOVEI TT-1+AC,(AC) ;CHECK DATA TYPE
ROT TT-1+AC,-SEGLOG
SKIPL TT-1+AC,ST(TT-1+AC)
TLNN TT-1+AC,FX ;SKIP IFF FIXNUM
JRST EFXNV!AC ;LOSE
MOVE TT-1+AC,(AC) ;GET VALUE IN NUMERIC AC
JRST (T)
TERMIN
FLNV1X: AOJA T,FLNV1 ;FLNV1 WITH SKIP RETURN
EFLNV1: %WTA FLNMER
FLNV1: SKOTT A,FL ;GET FLONUM VALUE IN TT FROM A
JRST EFLNV1
MOVE TT,(A)
JRST (T)
IFN DBFLAG,[
EDBNV1: %WTA DBNMER
DBNV1: SKOTT A,DB ;GET DOUBLE VALUE IN (TT,D) FROM A
JRST EDBNV1 ;HIGH ORDER WORD IN TT, LOW ORDER IN D
KA MOVE TT,(A)
KA MOVE D,1(A)
KIKL DMOVE TT,(A)
JRST (T)
] ;END OF IFN DBFLAG
IFN CXFLAG,[
CXNV1X: AOJA T,CXNV1 ;CXNV1 WITH SKIP RETURN
ECXNV1: %WTA CXNMER
CXNV1: SKOTT A,CX ;GET COMPLEX VALUE IN (TT,D) FROM A
JRST ECXNV1 ;REAL PART IN TT, IMAGINARY IN D
KA MOVE TT,(A)
KA MOVE D,1(A)
KIKL DMOVE TT,(A)
JRST (T)
] ;END OF IFN CXFLAG
IFN DXFLAG,[
EDXNV1: %WTA DXNMER
DXNV1: SKOTT A,DX ;GET DUPLEX VALUE IN (R,F,TT,D) FROM A
JRST EFLNV1 ;REAL PART IN (R,F), IMAGINARY IN (TT,D)
KA REPEAT 4, MOVE TT+<2#.RPCNT>,.RPCNT(A)
KIKL DMOVE R,2(A)
KIKL DMOVE TT,(A)
JRST (T)
] ;END OF IFN DXFLAG
BAKPRO
RSXST: HRRZ TT,VREADTABLE ;READ CHARACTER SYNTAX
HRRZ TT,TTSAR(TT) ; TABLE SETUP
HRLI TT,((A)) ;USED AS INDIRECT ADDRESS WITH
MOVEM TT,RSXTB ;INDEX FIELD A
NOPRO
JRST (T)
SUBTTL SUPPORT FOR LAP/FASLAP CODE
;;; USE THE PUSHN MACRO TO PUSH N NIL'S (0'S, 0.0'S) ONTO P (FXP, FLP).
;;; IT WILL GENERATE JSP T,NPUSH-N (0PUSH, 0.0PUSH) AS APPROPRIATE.
;;; COMPILED CODE USES THESE ROUTINES VERY FREQUENTLY.
REPEAT NNPUSH, CONC \NNPUSH-.RPCNT,NPUSH,: PUSH P,R70
NPUSH: JRST (T)
REPEAT N0PUSH, CONC \N0PUSH-.RPCNT,PUSH,: PUSH FXP,R70
0PUSH: JRST (T)
REPEAT N0.0PUSH, CONC \N0.0PUSH-.RPCNT,.PUSH,: PUSH FLP,R70
0.0PUSH: JRST (T)
40PUSH: PUSH FLP,T
REPEAT 40/N0PUSH, JSP T,0PUSH-N0PUSH
ZZZ==40-N0PUSH*<40/N0PUSH>
IFN ZZZ, JSP T,0PUSH-ZZZ
POPJ FLP,
CINTREL: INTREL ;RANDOM USEFUL RETURN ADDRESS
INTREL: POP FXP,INHIBIT .SEE UNLOCKI ;COME HERE TO PERFORM AN UNLOCKI
CHECKI: SKIPN NOQUIT ;CHECK FOR DELAYED INTRRUPTS
SKIPN INTFLG
POPJ P, ;EXIT IF NONE
JRST CKI0 ;ELSE GO PROCESS
.SEE INTXIT
JRST CTCALL ;CATCHALL IN COMPILED CODE
JRST CATBAR ;CATCH-BARRIER IN COMPILED CODE
JRST CATPUS ;COMPILED CODE CALLS CATCH
ERSETUP:
PUSH P,B ;COMPILED CODE CALLS ERRSET
JSP T,ERSTP
MOVEM P,ERRTN
SETZM ERRSW
SKIPE A ;VALUE IN A DESCRIBES WHETHER ERRORS PRINT
SETOM ERRSW
JRST (TT)
SUBTTL SUPPORT FOR COMPILED LSUBRS
;;; ORDINARY TYPE COMPILED LSUBRS BEGIN THEIR CODE WITH
;;; JSP D,.LCALL
;;; NUMERIC TYPE COMPILED LSUBRS BEGIN THEIR CODE WITH
;;; JSP D,.LCALL-N ;N IS A FUNCTION OF THE TYPE
;;; JSP D,.LCALL
;;; THIS ROUTINE TAKES CARE OF BINDING ARGLOC AND ARGNUM FOR THE
;;; BENEFIT OF THE ARG, SETARG, AND LISTIFY FUNCTIONS,
;;; AND TAKE CARE OF FLUSHING THE ARGUMENTS FROM THE STACK.
;;; THE ORDER OF THESE ENTRY POINTS IS BUILT INTO THE COMPILER
JRST .LCADX ;SETUP FOR DUPLEX TYPE COMPILED LSUBRS
JRST .LCACX ;SETUP FOR COMPLEX TYPE COMPILED LSUBRS
JRST .LCADB ;SETUP FOR DOUBLE TYPE COMPILED LSUBRS
JRST .LCAFL ;SETUP FOR FLONUM TYPE COMPILED LSUBRS
JRST .LCAFX ;SETUP FOR FIXNUM TYPE COMPILED LSUBRS
.LCALL: PUSH P,R70 ;SETUP FOR REGULAR COMPILED LSUBRS, OR NCALL ENTRY
.LCAF5: MOVN TT,T ;NUMBER OF ARGS
ADDI T,-1(P) ;ADDR OF BEGINNING OF ARG VECTOR
CAIL TT,XHINUM ;XHINUM IS TYPICALLY >777, SO THERE'S LITTLE
JRST LXPRLZ ; CHANCE OF THIS SCREW, BUT BETTER BE SAFE
MOVEI A,IN0(TT)
MOVEI TT,(T)
JSP T,SPECBIND
0 TT,ARGLOC ;ARGLOC HOLDS PDL POSITION FOR VECTOR OF LSUBR ARGS
0 A,ARGNUM ;ARGNUM IS NUMBER OF ARGS, AS A LISP FIXNUM
PUSHJ P,(D) ;CALL THE USER FUNCTION, NUMBER OF ARGS IN A
POP P,D
SKIPN T,@ARGNUM
JRST .LCAF7 ;MIGHT AS WELL BUM FOR NO ARGUMENTS
HRLS T ;GOT TO GET RID OF THE ARGUMENTS
SUB P,T
.LCAF7: JUMPE D,UNBIND ;THIS EXIT SIGNALS CALL TO NOTYPE LSUBR, OR NCALL TO NUMERIC
PUSH P,D ;ELSE EXIT THROUGH FIX1 OR EQUIVALENT,
JRST UNBIND ; MEANING REGULAR CALL TO NUMERIC LSUBR
.LCAFX: PUSH P,CFIX1 ;PUSH ADDRESS FOR CONVERTINGMACHINE NUMBER TO FIXNUM
AOJA D,.LCAF5 ;INCREMENT D PAST THE CALL TO .LCALL-0 WHICH FOLLOWS
.LCAFL: PUSH P,CFLOAT1
AOJA D,.LCAF5
.LCADB:
DB$ PUSH P,CDBL1
DB$ AOJA D,.LCAF5
DB% LERR [SIXBIT \CALL TO DOUBLE-TYPE USER LSUBR!\]
.LCACX:
CX$ PUSH P,CCMPL1
CX$ AOJA D,.LCAF5
CX% LERR [SIXBIT \CALL TO COMPLEX-TYPE USER LSUBR!\]
.LCADX:
DX$ PUSH P,CDUPL1
DX$ AOJA D,.LCAF5
DX% LERR [SIXBIT \CALL TO DUPLEX-TYPE USER LSUBR!\]
;;; THESE THREE FUNCTIONS MERELY SAVE THE LOSER THE TROUBLE OF TYPING "SETQ ".
NORET: PUSHJ P,NOTNOT ;SUBR 1
HRRZM A,VNORET
POPJ P,
.RSET: PUSHJ P,NOTNOT ;SUBR 1
MOVEM A,V.RSET
POPJ P,
NOUUO: PUSHJ P,NOTNOT ;SUBR 1
HRRZM A,VNOUUO
POPJ P,
SUBTTL VARIOUS LISTING AND DE-LISTING ROUTINES
LIST: PUSH FXP,CCPOPJ ;LSUBR
LISTX: MOVEI A,NIL ;BASICALLY, THE FUNCTION "LIST"
SKIPN R,T ; CALLED WITH A PUSHJ FXP,
LISTX3: JUMPE R,CPOPXJ
MOVEI B,(A) ;CLOBBERS A,B,T,TT,R
POP P,A
JSP T,PDLNMK
JSP T,%CONS
AOJA R,LISTX3
MAKLST: JSP T,FXNV1
TDZA A,A
PUSHJ P,NXCONS
SOJGE TT,.-1
POPJ P,
;;; INTERNAL LISTING FUNCTION; EVALUATES A LIST OF ARGS,
;;; STACKING THEIR VALUES ON THE PDL
KLIST: HLRZ B,(A) ;SUPER-HACKISH VERSION
PUSH P,B
HRRZ A,(A)
JLIST: HLRZ B,(A) ;HACKISH VERSION WHICH DOESN'T
PUSH P,B ; EVAL FIRST ARG OR COUNT IT
HRRZ A,(A)
ILIST: MOVEI T,0 ;CALLED BY JSP TT,ILIST
JUMPE A,(TT)
PUSH FXP,TT
PUSH FXP,T ;CONTAINS 0 - USED AS COUNTER
PUSH FXP,R ;MUST SAVE R!
ILIST1: PUSH P,A ;OTHERWISE, THIS EVAL LOOP
HLRZ A,(A) ; MAY CLOBBER ANYTHING
PUSHJ P,EVAL
ILIST3: EXCH A,(P) ;SAVE VALUE ON STACK
HRRZ A,(A)
SOS -1(FXP) ;COUNT VALUES
JUMPN A,ILIST1
POP FXP,R ;RESTORE R
POP FXP,T ;T HAS -<# OF VALUES ON PDL>
POPJ FXP,
;;; JSP T,GTRDTB ;GETS READTABLE IN AR2A, AND MAYBE CHECKS FOR ERRORS.
GTRDTB: HRRZ AR2A,VREADTABLE
SKIPN V.RSET ;ERROR CHECKS IFF *RSET NON-NIL
JRST (T)
SKOTT AR2A,SA
JRST GTRDT8 ;ERROR IF NOT ARRAY
MOVE TT,ASAR(AR2A)
TLNE TT,AS<RDT> ;ERROR IF NOT READTABLE TYPE ARRAY
JRST (T)
GTRDT8: PUSH P,B
MOVEI A,QREADTABLE
MOVEI B,READTABLE ;ON ERROR, RESTORE TO STANDARD READTABLE
PUSHJ P,BDGLBV ;GIVE OUT A FAIL-ACT
POP P,B
JRST GTRDTB ;TRY AGAIN IF LOSER RETURNS TO US
SUBTTL NOINTERRUPT FUNCTION
NOINTERRUPT: JUMPE A,CHECKU ;SUBR 1 - ENABLE/DISABLE
CAIN A,QTTY
JRST CHECKU
SETO A, ; RANDOM ASYNCHRONOUS
NOINT0: EXCH A,UNREAL ; "REAL TIME" INTERRUPTS
SKIPGE A ; (CLOCKS AND TTY)
MOVEI A,TRUTH
POPJ P,
;;; CHECK FOR ANY DELAYED "REAL TIME" INTERRUPTS, AND RUN THEM
;;; IF ANY. MUST DO THEM IN THE ORDER ^G/^X, CLOCKS, AND OTHER.
;;; NOTE THAT AFTER A ^G OR ^X, CHECKU GETS CALLED AGAIN.
;;; DESTROYS D AND F
CHECKU: SKIPN UNREAL ;NONE CAN BE PENDING IF NOT DELAYING
JRST NOINT0
CHECKQ: PUSH P,A
PUSHJ P,UINTPU
NOINT1: SKIPE (P)
JRST NOINT5
SKIPE D,UNRC.G ;PROCESS ^G/^X FIRST
JRST CKI2A ;TOP LEVEL OR ERRRTN WILL DO A CHECKU
NOINT5: PUSHJ P,NOINTA ;NOW PROCESS ALARMCLOCK INTERRUPTS
JRST NOINT1
NOINT3: SKIPG F,UNREAR ;NOW ANY OTHER INTERRUPTS
JRST NOINT4
SOS UNREAR
MOVE D,UNREAR(F)
TRNE D,400000 ;IF (NOINTERRUPT 'TTY), SUPPRESS
SKIPN (P) ; TTY INTERRUPTS AT THIS TIME
PUSHJ P,YESINT ;MAY CLOBBER R (SEE UISTAK)
JRST NOINT1
NOINT4: SKIPG A,UNREAL
MOVEI A,TRUTH
POP P,UNREAL
JRST UINTEX
;;; DO NOT TRANSFORM THE "PUSHJ, POPJ" SEQUENCES INTO "JRST".
;;; YESINT DEPENDS ON LOOKING AT THE PUSHJ ADDRESS TO SEE WHETHER
;;; WE CAME FROM NOINTERRUPT OR ELSEWHERE!
NOINTA: SKIPN D,UNRRUN
JRST NOINT2
SETZM UNRRUN
PUSHJ P,YESINT
POPJ P,
NOINT2: SKIPN D,UNRTIM
JRST POPJ1
SETZM UNRTIM
PUSHJ P,YESINT
POPJ P,
ENOINT::. .SEE UINT0N
SUBTTL CAR/CDR ROUTINES AND FUNCTIONS
;;; HERE BELOW FOLLOW THE "FAST" CAR-CDR ROUTINES,
;;; USED WHEN *RSET=NIL, AND BY COMPILED CODE.
;;; NOTE THAT THE RELATIVE DISPLACEMENT OF THE FUNCTION ENTRY POINTS
;;; IS VERRRRRY IMPORTANT TO THE POOOR COMPLR.
;;; DONT EVER CHANGE THEM!!
CARCDR: ;INDEX NUMBER FOR CALL BY COMPILED CODE
%CADDDR: SKIPA A,(A) ; 0
%CADDAR: HLRZ A,(A) ; 1
%CADDR: SKIPA A,(A) ; 2
%CADAR: HLRZ A,(A) ; 3
%CADR: SKIPA A,(A) ; 4
%CAAR: HLRZ A,(A) ; 5
%CAR: HLRZ A,(A) ; 6
JRST (T)
%CDDDDR: SKIPA A,(A) ; 8
%CDDDAR: HLRZ A,(A) ; 9
%CDDDR: SKIPA A,(A) ;10.
%CDDAR: HLRZ A,(A) ;11.
%CDDR: SKIPA A,(A) ;12.
%CDAR: HLRZ A,(A) ;13.
%CDR: HRRZ A,(A) ;14.
JRST (T)
%CAADDR: SKIPA A,(A) ;16.
%CAADAR: HLRZ A,(A) ;17.
%CAADR: SKIPA A,(A) ;18.
%CAAAR: HLRZ A,(A) ;19.
JRST %CAAR
%CDADDR: SKIPA A,(A) ;21.
%CDADAR: HLRZ A,(A) ;22.
%CDADR: SKIPA A,(A) ;23.
%CDAAR: HLRZ A,(A) ;24.
JRST %CDAR
%CAAADR: SKIPA A,(A) ;26.
%CAAAAR: HLRZ A,(A) ;27.
JRST %CAAAR
%CDDADR: SKIPA A,(A) ;29.
%CDDAAR: HLRZ A,(A) ;30.
JRST %CDDAR
%CDAADR: SKIPA A,(A) ;32.
%CDAAAR: HLRZ A,(A) ;33.
JRST %CDAAR
%CADADR: SKIPA A,(A) ;35.
%CADAAR: HLRZ A,(A) ;36.
JRST %CADAR
;;; THE FOLLOWING TABLE IS A TRANSFER VECTOR: GIVEN THE INFO-NUMBER
;;; OF A CAR-CDR OPERATION, SAY N, THEN CARCDR[N-2] IS THE
;;; ADDRESS OF THE FAST ROUTINE FOR THAT OPERATION. NOTE THAT THE
;;; INFO-NUMBER IS NOT THE SAME AS THE INDEX-NUMBER-FOR-COMPILED-CODE
;;; ALSO, THE TOP 13. BITS ENCODE A DECOMPOSITON OF THE A-D STRING INTO
;;; 1) THE LEFT-MOST OPERATION - 1 BIT (1 FOR "D" AND 0 FOR "A"),
;;; 2) THE INFO NUMBER OF THE "TAIL" - 6 BITS ("TAIL" IS REMAINDER OF
;;; A-D STRING, E.G., "TAIL" OF "ADDAD" IS "DDAD")
;;; 3) THE "BOY ARE THESE NUMBERS RANDOM" NUMBER WHICH THE COMPILER
;;; USES WHEN OUTPUTTING FAST JSP CALLS THE THE %CARCDR ROUTINES.
%CARCDR:
IRP X,,[A,D
AA,AD,DA,DD
AAA,AAD,ADA,ADD,DAA,DAD,DDA,DDD
AAAA,AAAD,AADA,AADD,ADAA,ADAD,ADDA,ADDD
DAAA,DAAD,DADA,DADD,DDAA,DDAD,DDDA,DDDD]AD,,[0,1
0,0,1,1
0,0,0,0,1,1,1,1
0,0,0,0,0,0,0,0
1,1,1,1,1,1,1,1]TL,,[0,0
2,3,2,3
4,5,6,7,4,5,6,7
10,11,12,13,14,15,16,17
10,11,12,13,14,15,16,17]
zz==%C!X!R
AD_35.+TL_29.+<zz-carcdr>_23.+zz
TERMIN
ICADRP: PUSH P,CFIX1 ;+INTERNAL-CARCDRP
JSP T,IC.RP
SETO TT,
POPJ P,
;;; SKIPE IF CARCDR FUNCTION, WITH CODE WORD IN TT
IC.RP: CAIL A,QCAR ;First
CAILE A,QCDDDDR ;Last CARCDR sym
JRST (T)
2DIF [HLRZ TT,(A)]%CARCDR,QCAR
LSH TT,-5
JRST 1(T)
;;; STANDARD INTERPRETER SUBRS FOR THE VARIOUS CAR-CDR
;;; OPERATIONS. THESE CALL A CENTRAL DECODER WHICH IN *RSET
;;; MODE PERFORMS TYPE CHECKING ON THE OPERAND AT EACH STEP.
CRSUBRS:
IRP X,,[A,D,AA,AD,DA,DD
AAA,AAD,ADA,ADD,DAA,DAD,DDA,DDD
AAAA,AAAD,AADA,AADD,ADAA,ADAD,ADDA,ADDD
DAAA,DAAD,DADA,DADD,DDAA,DDAD,DDDA,DDDD]
C!X!R: JSP F,CR0
TERMIN
;;; LET A=0, D=1, AND LET CWXYZR BE A CAR-CDR OPERATION, WITH
;;; THE VARIABLES W,X,Y,Z RANGING OVER {,A,D}. LET A NUMBER N
;;; BE COMPUTED CORRESPONDING TO CXYZWR AS FOLLOWS:
;;; N = Z + 2 IF W,X,Y ARE NULL
;;; N = Y*2 + Z + 4 IF W,X ARE NULL
;;; N = X*4 + Y*2 + Z + 10 IF W IS NULL
;;; N = W*10 + X*4 + Y*2 + Z + 20 IF NONE OF W,X,Y,Z ARE NULL
;;; NOTE TWO THINGS:
;;; [1] THIS REPRESENTATION OF A CAR-CDR OPERATION IS EASILY
;;; BITWISE DECODABLE. THE POSITION OF THE FIRST 1 BIT
;;; INDICATES THE START OF THE REST OF THE ENCODING, WHICH HAS
;;; 0 FOR CAR, 1 FOR CDR AT EACH POSITION.
;;; [2] FOR ANY SET OF OPERATIONS COMPLETE FROM CAR AND CDR,
;;; THROUGH CAAR, CADR, ... TO "LEVEL M" CAR-CDR'S (THOSE WITH
;;; M A'S AND D'S), THIS ENCODING PRODUCES A COMPACT ENCODING,
;;; M+1
;;; WITH N RANGING FROM 2 TO 2 -1 INCLUSIVE.
;;;
;;; NAME N (OCTAL) N (BINARY)
;;; CAR 2 10
;;; CDR 3 11
;;; CAAR 4 100
;;; CADR 5 101
;;; . . .
;;; CDDADR 35 11101
;;; CDDDAR 36 11110
;;; CDDDDR 37 11111
CR0: SKIPE V.RSET
JRST CR1
POP P,T
JRST @%CARCDR-<CRSUBRS+1>(F) ;QUICK VERSION FOR *RSET = NIL
CR1: PUSHJ P,SAVX3 ;COMPILED CODE ASSUMES NUMACS SAFE
CR1A: MOVEI D,(A)
2DIF [MOVEI T,(F)]400002,CRSUBRS+1 ;400000 IS FOR CA.DER
CR2: SKOTT D,LS ;CHECK FOR LIST TYPE
JRST CR4
CR3: TRNN T,1 ;SKIP IF CDR OPERATION
JRST CR3B
HRRZ D,(D)
CR3A: ROT T,-1
TRNE T,776 ;SKIP IF ALL DONE
JRST CR2
CR7: MOVEI A,(D)
JRST RSTX3 ;COMPILED CODE ASSUMES NUMACS SAFE
CR3B: TLNE TT,HNK ;IF ITS A HUNK, THEN CAR HAD BETTER
JRST CR3C
HLRZ D,(D) ;TAKE THE CAR
JRST CR3A
CR3C: HLRZ TT,(D)
CAIN D,-1 ;NOT BE A UNUSED SLOT
JRST .+3
MOVE D,TT
JRST CR3A
MOVEI A,(D)
PUSHJ P,WLHERR
MOVEI D,(A)
JRST CR2
CR4: TRNE T,1 ;IF NEXT ARG ISN'T A LIST
SKIPA R,VCDR ;THEN CHECK OUT AGAINST PERMISSIBLITIES
MOVE R,VCAR
JUMPN R,CR5
TRNN D,-1 ;IF ONLY NIL AND LISTS PERMISSIBLE
JRST CR7 ;THEN LET NIL BECOME NIL (CAR NIL) = (CDR NIL) = NIL
JRST CA.DER ;ELSE, BOMB OUT
CR5: CAIE R,QSYMBOL
JRST CR6
TRNE D,-1
TLNE TT,SY
JRST CR3
JRST CA.DER ;LOSE IF NEITHER NIL NOR SYMBOL
CR6: CAIN R,QLIST
JRST CA.DER ;LIST TEST ON ARG HAS ALREADY FAILED, SO FAIL
JRST CR3 ;IF CAR,CDR NOT "LIST", "SYMBOL", OR "NIL",
; THEN OK FOR ANYTHING
;;; NTH and NTHCDR - if *RSET is off, try to do fastly
; (NTH N FOO) RETURNS THE NTH CAR [WHERE (NTH 0 FOO) IS (CAR FOO)]
; EQUIVALENT TO (CAR (NTHCDR N FOO))
; (NTHCDR N FOO) RETURNS THE RESULT OF 'N' CDR'S
NTH: TDZA R,R
NTHCDR: MOVEI R,TRUTH ;R IS "NTHCDR"P FLAG - () ==> "NTH"
NTHCD5: SKIPN D,V.RSET
JRST NTHCD6
SKOTT A,FX
JRST NTHIEN
NTHCD6: MOVE TT,(A)
JUMPLE TT,NTHCD0 ;MUST BE NON-NEGATIVE
EXCH A,B ;RESULT TO BE RETURNED IN A
JUMPN D,NTHCD2 ;*RSET ==> DO ERROR CHECK ON EACH ELEMENT
NTHCD1: HRRZ A,(A) ;DO A CDR
SOJG TT,NTHCD1 ;LOOP UNTIL APPROPRIATE NUMBER OF CDR'S DONE
JUMPE R,$CAR
POPJ P, ;THEN RETURN
NTHCD0: JUMPN TT,NTHIEN ;INDEX "0"
EXCH A,B
JUMPN R,CPOPJ ;JUST EXIT FOR NTHCDR
JUMPE D,$CAR ;BECOME "CAR" FOR (NTH 0 X)
JRST CAR
NTHCD2: MOVE F,(B)
SOS F
PUSHJ P,LASTCK ;TAKE "(F)" CDRS, SKIP IF SUCCESSFUL
JRST NTHER ; ERROR IF ARG-1 CDRS IS ATOMIC
JUMPN R,NTHCD4
HRRZ D,(D)
SKOTT D,LS
JUMPN D,NTHER
HLRZ A,(D) ;FOR "NTH"
POPJ P,
NTHCD4: HRRZ A,(D) ;FOR "NTHCDR", TAKE FINAL CDR
POPJ P,
SUBTTL SYMBOL CONSER
PNGNK: ADDI C,PNBUF-1 ;ONLY BY INTERN - PURIFIES PNAME IF RELEVANT
SKIPGE LPNF ;IF LPNF IS NEGATIVE, THE PNAME IS IN PNBUF,
PUSHJ P,PNCONS ; SO WE CONS IT UP NOW
SKIPE B,V.PURE
CAIN B,QSYMBOL
JRST SYCONS ;NO PURE COPY NEEDED, JUST CONS UP SYMBOL
PUSHJ P,PURCOPY ;ELSE GET PURE COPY OF PNAME
JRST PSYCONS ;AND USE PURE CONSER
PNGNK1: SKIPGE LPNF ;CONS UP PNAME IF NECESSARY
PNGNK2: PUSHJ P,PNCONS
SYCONS: ;CONS UP A SYMBOL - PNAME LIST IS IN A
BAKPRO
SKIPN FFY ;IF SYMBOL FREELIST EMPTY, GO DO A GC
JRST SYCON1
SKIPN B,FFY2 ;IF SYMBOL BLOCK FREELIST EMPTY, MUST GC
JRST SYCON1
MOVEM A,SYMPNAME(B) ;PUT PNAME IN SYMBOL BLOCK
MOVE A,[SY.ONE,,SUNBOUND] ;INITIAL VALUE CELL IS SUNBOUND
XCTPRO
EXCH A,SYMVC(B) ;PUT IN SYMBOL BLOCK
MOVEM A,FFY2 ;CDR SYMBOL BLOCK FREELIST
SYCON2: MOVSI A,(B) ;INITIAL PROPERTY LIST IS NIL
EXCH A,@FFY ;CONS UP SYMBOL HEADER
EXCH A,FFY
NOPRO
POPJ P,
SPECPRO INTSYX
SYCON1: PUSHJ P,AGC
JRST SYCONS
;PURE SYMBOL CONSER
PSYCONS:
BAKPRO
AOSL B,NPFFY2 ;CONS UP A PURE SYMBOL BLOCK
NOPRO
SPECPRO INTSYQ
PUSHJ P,GTNPSG
ADD B,EPFFY2
AOS NPFFY2
SPECPRO INTSYP
MOVEM A,SYMPNAME(B)
MOVE A,[SY.ONE+SY.PUR,,SUNBOUND] ;SY.PUR BIT SAYS MAYBE READ-ONLY
MOVEM A,SYMVC(B)
BAKPRO
SKIPE FFY ;IF SYMBOL FREELIST EMPTY, GO DO A GC
JRST SYCON2
PUSHJ P,AGC
JRST SYCON2
NOPRO
PNCONS: PUSH FXP,T ;CONS A PNAME LIST OUT OF PNBUF
MOVEI A,NIL
2DIF [MOVEI C,(C)]1,PNBUF
PNG2: MOVE B,A
MOVE TT,PNBUF-1(C)
JSP T,FWCONS
PUSHJ P,CONS
SOJG C,PNG2
CPXTJ: JRST POPXTJ
SUBTTL LIST SPACE CONSERS
;;; THIS SET OF CONSERS IS USED WITHIN THE LISP SYSTEM.
;;; ONLY A AND B ARE CLOBBERED, AND THE ARGUMENTS MUST NOT
;;; BE PDL QUANTITIES.
;;; FOR NCONS, SEE JUST BEFORE "ACONS"
;NCONS: TRZA B,-1 ;(NCONS A) = (CONS A NIL)
NXCONS: MOVEI B,NIL ;WILL "PUSH" A () ONTO A LIST IN A
XCONS: EXCH B,A ;(XCONS A B) = (CONS B A)
CONS: HRL B,A
SPECPRO INTC2X
CONS1: SKIPN A,FFS ;SKIP UNLESS FREELIST EMPTY
JRST CONS3
EXCH B,(A) ;PUT POINTERS IN CELL, GET CDR OF FREELIST
XCTPRO
EXCH B,FFS ;CDR FREELIST, COPY OF CELL POINTER TO B
NOPRO ; (BUT NO ONE CURRENTLY TAKES ADVANTAGE OF IT)
POPJ P,
SPECPRO INTC2X
CONS3: HLR A,B ;DO THIS TO PROTECT POINTERS FROM GC
PUSHJ P,AGC ;PERFORM A GARBAGE COLLECTION
NOPRO
JRST CONS1 ;GO TRY AGAIN
;;; THIS SET OF CONSERS IS THE SET AVAILABLE TO INTERPRETED CODE.
;;; THEY MAKE SURE THAT PDL QUANTITIES DO NOT GET INTO LIST STRUCTURE.
$NCONS: MOVEI B,NIL ;SUBR 1
EXCH A,B
$XCONS: JSP T,PDLNMK ;SUBR 2
EXCH A,B
JSP T,PDLNMK
JRST CONS
LIST.: AOJG T,LIST.9 ;LSUBR (1 . N)
POP P,A ;(CONS A B C D) = (CONS A (CONS B (CONS C D)))
PUSH FXP,R ;THIS ROUTINE MUST SAVE R AS COMPILED CODE COUNTS ON IT
MOVE R,T ;LISTX3 WILL WANT COUNT IN R - ALSO SAVE OVER PDLNMK
JSP T,PDLNMK
PUSHJ FXP,LISTX3 ;LISTIFY ALL BUT LAST ARG,
POP FXP,R
POPJ P, ; WITH LAST ARG AS FINAL CDR
;;; THIS SET OF CONSERS IS CALLED FROM COMPILED CODE.
;;; THE "CDR" MUST NOT BE A PDL QUANTITY; THE "CAR" IS PDLNMK'D.
%PDLNC: TRZA B,-1
%PDLXC: EXCH B,A
%PDLC: CAML A,NPDLL ;VERY FAST CHECK FOR A PDL NUMBER
CAMLE A,NPDLH
JRST %CONS
PUSH P,T ;IF PROBABLY A PDL NUMBER,
JSP T,PDLNM0 ; IT'S SO SLOW THAT THIS PART
; DOESN'T MATTER SO MUCH,
JRST CONS ; BLETCHEROUS IS IT IS
;;; THIS SET OF CONSERS IS CALLED FROM COMPILED CODE.
;;; ARGUMENTS MUST NOT BE PDL QUANTITIES.
;;; THESE ARE SLIGHTLY FASTER, SINCE T IS USED FOR JSP.
;;; FOR %NCONS, SEE JUST BEFORE "ACONS"
;%NCONS: TRZA B,-1 ;(NCONS A) = (CONS A NIL)
%XCONS: EXCH B,A ;(XCONS A B) = (CONS B A)
%CONS: HRLI B,(A)
SPECPRO INTC2Y
%CONS1: SKIPN A,FFS ;SKIP UNLESS FREELIST EMPTY
JRST %CONS3
EXCH B,(A) ;PUT POINTERS IN CELL, GET CDR OF FREELIST
XCTPRO
EXCH B,FFS ;CDR FREELIST, COPY OF CELL POINTER TO B
NOPRO ; (BUT NO ONE CURRENTLY TAKES ADVANTAGE OF IT)
JRST (T)
SPECPRO INTC2Y
%CONS3: HLR A,B ;DO THIS TO PROTECT POINTERS FROM GC
PUSHJ P,AGC ;PERFORM A GARBAGE COLLECTION
NOPRO
JRST %CONS1 ;GO TRY AGAIN
;THIS ROUTINE IS FOR COMPILED CODE. IT DOES A PDLNMK CHECK ON BOTH ARGS
%C2NS: PUSH P,T ;ALLOW RETURN VIA PUSHJ
$C2NS: EXCH A,B ;WE CAN USE $XCONS, BUT IT WILL ALSO DO AN EXCH
JRST $XCONS
SUBTTL NUMBER CONSERS
FIX2: JSP T,IFIX ;FLONUM TO FIXNUM CONVERSION, FXCONS, POPJ
FIX1: POP P,T ;FXCONS, THEN POPJ
FXCONS: ;FIXNUM CONS - MAY UNIQUIZE
FIX1A: CAIGE TT,XHINUM ;IF WITHIN THE RANGE OF THE
CAMGE TT,[-XLONUM] ; BUILT-IN TABLE OF UNIQUE FIXNUMS,
JRST FWCONS ; THEN NEEDN'T DO A REAL CONS
MOVEI A,IN0(TT) ;JUST PROVIDE A POINTER INTO THE TABLE
JRST (T)
SPECPRO INTZAX
FWCONS: SKIPN A,FFX ;FULL WORD CONS - ALWAYS CONSES
JSP A,AGC4
EXCH TT,(A)
XCTPRO
EXCH TT,FFX
NOPRO
JRST (T)
FLCONX: AOJA T,FLCONS ;FLCONS WITH SKIP RETURN
FLOAT2: JSP T,IFLOAT ;FIXNUM TO FLONUM, FLCONS, POPJ
FLOAT1: POP P,T ;FLCONS, THEN POPJ
SPECPRO INTZAX
FLCONS: ;FLONUM CONS
FPCONS: SKIPN A,FFL
JSP A,AGC4
EXCH TT,(A)
XCTPRO
EXCH TT,FFL
NOPRO
JRST (T)
IFN DBFLAG,[
DBL1: POP P,T
SPECPRO INTZAX
DBCONS: HRRZS FFD ;DOUBLE PRECISION CONSER
SKIPN A,FFD
JSP A,AGC4
EXCH TT,(A)
XCTPRO
EXCH TT,FFD
NOPRO
MOVEM D,1(A)
JRST (T)
] ;END OF IFN DBFLAG
IFE DBFLAG,[
DBCONS: PUSH P,T
DBL1: MOVEI A,QDOUBLE ;ERROR IF DOUBLES NOT IMPLEMENTED
%FAC NUM1MS
] ;END OF IFE DBFLAG
IFN CXFLAG,[
CXCONX: AOJA T,CXCONS ;CXCONS WITH SKIP RETURN
CMPL1: POP P,T
SPECPRO INTZAX
CXCONS: HRRZS FFC ;COMPLEX NUMBER CONSER
SKIPN A,FFC
JSP A,AGC4
EXCH TT,(A)
XCTPRO
EXCH TT,FFC
NOPRO
MOVEM D,1(A)
JRST (T)
] ;END OF IFN CXFLAG
IFE CXFLAG,[
CXCONS: PUSH P,T
CMPL1: MOVEI A,QCOMPLEX ;ERROR IS COMPLEX NUMBERS NOT IMPLEMENTED
%FAC NUM1MS
] ;END OF IFE CXFLAG
IFN DXFLAG,[
DUPL1: POP P,T
SPECPRO INTZAX
DXCONS: HRRZS FFZ ;DOUBLE-PRECISION COMPLEX NUMBER CONSER
SKIPN A,FFZ
JSP A,AGC4
EXCH R,(A)
XCTPRO
EXCH R,FFZ
NOPRO
MOVEM F,1(A)
KA MOVEM TT,2(A)
KA MOVEM D,3(A)
KIKL DMOVEM TT,2(A)
JRST (T)
] ;END OF IFN DXFLAG
IFE DXFLAG,[
DXCONS: PUSH P,T
DUPL1: MOVEI A,QDUPLEX ;ERROR IF DUPLICES NOT IMPLEMENTED
%FAC NUM1MS
] ;END OF IFE DXFLAG
SUBTTL HUNK PRIMITIVES - CXR, RPLACX, HUNK<N>, HUNK, HUNKIFY
IFE HNKLOG,[
%HUNK1:
%HUNK2:
%HUNK3:
%HUNK4:
%CXR:
%RPX: LERR [SIXBIT \NO HUNKS IN THIS LISP - HUNK/CXR/RPLACX!\]
] ;END OF IFE HNKLOG
IFN HNKLOG,[
CXR: JSP T,FXNV1 ;SUBR 2
SKIPE V.RSET
JSP F,CXR3 ;CHECK ARGS
ROT TT,-1
ADDI TT,(B)
JUMPGE TT,CXR2
HLRZ A,(TT) ;ODD-NUMBERED COMPONENTS IN LEFT HALVES
POPJ P,
CXR2: HRRZ A,(TT) ;EVEN-NUMBERED COMPONENTS IN RIGHT HALVES
POPJ P,
RPLACX: JSP T,FXNV1 ;SUBR 3
SKIPE V.RSET
JSP F,CXR3 ;CHECK ARGS
CAML C,NPDLL
CAMLE C,NPDLH
JRST .+4
EXCH A,C
JSP T,PDLNMK ;SIGH - MUST PDLNMK THE DATUM
EXCH A,C
ROT TT,-1
ADDI TT,(B)
JUMPGE TT,RPLX2
HRLM C,(TT)
JRST BRETJ ;RETURN SECOND ARG
RPLX2: HRRM C,(TT)
JRST BRETJ
CXR30: TLNN T,$FS+VC ;A LIST CELL OR VALUE CELL IS OKAY
JRST CXR31 ; IF THE INDEX IS 0 OR 1
JUMPL TT,CXR33
CAIG TT,1
JRST (F)
CXR31: EXCH A,B
PUSHJ P,WLHERR
EXCH A,B
CXR3: MOVEI T,(B) ;CHECKING ROUTINE FOR CXR/RPLACX
LSH T,-SEGLOG
MOVE T,ST(T)
TLNN T,HNK ;SECOND ARG MUST BE HUNK
JRST CXR30
MOVEI D,2
2DIF [LSH D,(T)]0,QHUNK0
CAMLE D,TT ;FIRST ARG MUST BE SMALLER THAN
JUMPGE TT,CXR34 ; LENGTH OF SECOND, YET NON-NEGATIVE
CXR33: WTA [BAD HUNK INDEX!]
JRST -3(F)
CXR34: MOVE D,TT ;EVERYTHING IS APPARENTLY OKAY
ROT D,-1
ADDI D,(B)
HRRZ T,(D) ;FETCH COMPONENT IN QUESTION
SKIPGE D
HLRZ T,(D)
CAIN T,-1 ;ERROR IF AN UNUSED COMPONENT
JRST CXR33
JRST (F)
WLHERR: WTA [INVALID OR WRONG LENGTH HUNK!]
POPJ P,
;;; IFN HNKLOG
;;; CXR ROUTINE FOR COMPILED CODE. HUNK IN A, INDEX IN TT.
%CXR: ROT TT,-1 ;QUICK ENTRY FOR COMPILED CALLS
ADDI TT,(A)
JUMPGE TT,%CXR2
HLRZ A,(TT)
JRST (T)
%CXR2: HRRZ A,(TT)
JRST (T)
;;; RPLACX ROUTINE FOR COMPILED CODE.
;;; HUNK IN A, DATUM IN B, INDEX IN TT.
;;; THE DATUM IS GUARANTEED NOT TO BE A PDL QUANTITY.
%RPX: ROT TT,-1 ;HUNK SUBSCRIPT IS PASSED IN TT
ADDI TT,(A)
JUMPGE TT,%RPX2
HRLM B,(TT)
JRST (T)
%RPX2: HRRM B,(TT)
JRST (T)
;;; %HUNK1, %HUNK2, %HUNK3, AND %HUNK4 ROUTINES FOR COMPILED CODE.
;;; THESE ALLOCATE HUNKS OF SIZE 1, 2, 3, OR 4 SUPER-QUICKLY.
;;; ARGUMENTS IN A, B, C, AR1, GUARANTEED NOT TO BE PDL QUANTITIES.
%HUNK1: SKIPN VMAKHUNK
JRST %NCONS
MOVEI B,(A) ;%HUNK1 IS %HUNK2, WITH ONE UNUSED COMPONENT,
MOVEI A,-1 ; BUT UNFORTUNATELY MUST SHUFFLE ARGS
JRST %HUNK2
%HNK2A: HRRZS FFH ;HUNK4 IS THE IMPORTANT CASE
PUSHJ P,AGC
BAKPRO
%HUNK2: SKIPN VMAKHUNK
JRST %CONS
SKIPG FFH
JRST %HNK2A
HRL B,A
EXCH B,@FFH
XCTPRO
EXCH B,FFH
EXCH A,B
NOPRO
JRST (T)
%HUNK3: MOVEI AR1,(C) ;HUNK3 IS JUST HUNK4, WITH ONE UNUSED COMPONENT
MOVEI C,-1 ; BUT UNFORTUNATELY MUST SHUFFLE ARGS
JRST %HUNK4
%HNK4A: HRRZS FFH+1 ;HUNK4 IS THE IMPORTANT CASE
PUSHJ P,AGC
BAKPRO
%HUNK4: SKIPG FFH+1
JRST %HNK4A
HRL AR1,A
EXCH AR1,@FFH+1
XCTPRO
EXCH AR1,FFH+1
EXCH A,AR1
HRRZM B,1(A)
HRLM C,1(A)
NOPRO
JRST (T)
;; For various misc hacks of REES and RWK. Exchange hunk and A.
;; Only makes sense in very strange hand-code.
IFN USELESS,[
%HNKRA: HRRZS FFH+1 ;Be sure sign bit is off
PUSHJ P,AGC
BAKPRO
%HNK4R: SKIPG FFH+1
JRST %HNKRA
EXCH A,@FFH+1 ;Pick up sticks
XCTPRO
EXCH A,FFH+1 ;A -> Hunk with old contents of A
NOPRO
JRST (T)
]
;;; IFN HNKLOG
HNKSZ0: WTA [NOT A HUNK - HUNKSIZE!]
JRST HNKSZ1
HUNKSIZE: ;SUBR 1 - NCALLABLE
PUSH P,CFIX1
HNKSZ1: MOVEI T,(A)
LSH T,-SEGLOG
SKIPL T,ST(T)
JRST HNKSZ0
MOVEI TT,2
TLNE T,HNK
JRST .+4
SKIPN VMAKHUNK
POPJ P, ;RANDOM CONSES ARE OF SIZE 2
JRST HNKSZ0
MOVEI D,1
2DIF [LSHC TT,(T)]0,QHUNK0
ADDI D,-1(A)
HNKSZ3: SETCM R,(D) ;OTHERWISE CALCULATE LENGTH
TLNE R,-1
POPJ P,
TRNE R,-1
SOJA TT,CPOPJ
SUBI D,1
SUBI TT,2
JUMPG TT,HNKSZ3
PUSHJ P,WLHERR
JRST HNKSZ1
HUNKP: LSH A,-SEGLOG ;SUBR 1
SKIPGE A,ST(A)
TLNN A,HNK
JRST FALSE
JRST TRUE
MHUNKE: WTA [MUST BE LIST OR FIXNUM - MAKHUNK!]
MAKHUNK: SKOTT A,FX ;SUBR 1
JRST MHUNK5
SKIPN TT,(A)
JRST FALSE
MOVE T,TT
PUSHJ P,ALHUNK ;INITIALIZED TO NIL
MHUNK7: LSHC T,-1 ;LEAVES THE "ODDP" BIT IN SIGN OF TT
HRLOI T,-1(T) ;SEE HAKMEM FOR THIS EQVI HAK
EQVI T,(A)
TLNN T,-1
JRST MHUNK6
SETZM (T)
AOBJN T,.-1
MHUNK6: SKIPGE TT
HLLZS (T)
POPJ P,
MHUNK5: JUMPGE TT,MHUNKE .SEE LS
JSP TT,AP2 ;STACK LIST ON PDL, -COUNT IN T
HUNK: MOVN TT,T ;LSUBR
AOJG T,FALSE ;CREATE HUNK BIG ENOUGH TO
MOVEI D,QHUNK ; HOLD ALL GIVEN ARGUMENTS,
CAILE TT,2_HNKLOG
SOJA T,WNALOSE
PUSHJ FXP,ALHNKL ; AND INSTALL THEM
POPJ P,
;;; IFN HNKLOG
;;; HUNK ALLOCATION ROUTINES
;;; MAKE A HUNK - (TT) HAS NUMBER OF ITEMS WANTED.
;;; THEN INSTALL THESE ITEMS FROM PDL BY POPPING OFF
ALHNKL: PUSH FXP,TT
PUSHJ P,ALHUNK ;CREATE A FRESH HUNK, AND INSTALL ARGS FROM PDL
MOVEI B,(A) ;SAVES C - ALSO USED BY FASLOAD
POP P,A .SEE LDLHNK
JSP T,PDLNMK ;CAN'T PUT PDL QUANTITY INTO A HUNK
HRROM A,(B) ;LAST ELEMENT GOES IN POSITION 0
SOSN TT,(FXP)
JRST ALHNLY
LSHC TT,-1 ;IN D, SIGN BIT ON ==> EVEN NUMBER OF ELEMENTS
MOVEI T,(B)
ADDI T,(TT)
EXCH D,T ;NOW IN D - LAST WORD INTO WHICH TO POP
JUMPGE T,ALHNLD
ALHNLA: POP P,A ;LOOP TO INSTALL ARGS IN HUNK
JSP T,PDLNMK
HRLM A,(D)
ALHNLD: SOJL TT,ALHNLX
POP P,A
JSP T,PDLNMK
HRRM A,(D)
SOJA D,ALHNLA
ALHNLY: SKIPN VMAKHUNK
HRLZS (B)
ALHNLX: POPI FXP,1
EXCH A,B
POPJ FXP,
;;; ALLOCATE A HUNK OF SIZE INDICATED IN (TT)
;;; AND INITIALIZE TO THE "UNUSED" POINTER (#777777)
ALHUNK: JUMPLE TT,ALHNKE ;PRESERVES AR1,AR2A - SEE SUBST
CAILE TT,2_HNKLOG ;MUST PRESERVE T
JRST ALHNKE
SUBI TT,1
JFFO TT,ALHNKD ;SELECT CONSER FOR CORRECT SIZE HUNK
JRST ALHNKF
ALHNKD: JRST ALHNKF-35.(D) ;DISPATCH TO INDIVIDUAL HUNK CONSERS BELOW
RADIX 10.
REPEAT HNKLOG, JRST CONC ALHNK,\<HNKLOG-.RPCNT>
RADIX 8
ALHNKF: SKIPE VMAKHUNK ;1 OR 2 THINGS - TEST FOR USE OF CONS
JRST ALHNK0
JRA A,ACONS
;;; HUNK<index> IS THE CONSER FOR HUNKS OF SIZE 2^<index> WORDS.
;;; index no.: 0 1 2 3 4 5 6 7 8 9
;;; no. words: 1 2 4 8 16 32 64 128 256 512
;;; no. items: 2 4 8 16 32 64 128 256 512 1024
;;; WARNING! THESE CONSERS MUST PRESERVE T
.SEE MHUNK7
REPEAT HNKLOG+1,[
SPECPRO INTZAX
RADIX 10.
CONC GHNK,\.RPCNT,:
HRRZS FFH+.RPCNT ;FLUSH SIGN BIT - NEED A HUNK NOW
SKIPN A,FFH+.RPCNT ;INITIATE GC DUE TO HUNKS
JSP A,AGC4
CONC ALHNK,\.RPCNT,: ;VARIOUS HUNK CONSERS: HUNK0, HUNK1, ...
SKIPG A,FFH+.RPCNT
JRST CONC GHNK,\.RPCNT
HRRZ TT,(A)
RADIX 8
XCTPRO
MOVEM TT,FFH+.RPCNT
SETOM (A) ;MUST FILL IN COMPONENTS WITH THE "UNUSED" POINTER
IFLE .RPCNT-2, REPEAT <1_.RPCNT>-1, SETOM .RPCNT+1(A)
IFG .RPCNT-2,[
MOVEI D,1(A)
HRLI D,(A)
BLT D,<1_.RPCNT>-1(A)
]
NOPRO
POPJ P,
] ;END OF REPEAT HNKLOG
] ;END OF IFN HNKLOG
SUBTTL ATOM, PLIST, SETPLIST, ASSOC AND FRIENDS
ATOM: LSH A,-SEGLOG ;CAN DO LSH HERE BECAUSE DON'T NEED ARG
SKIPGE ST(A) ;FALSE ONLY FOR NON-ATOMIC
TDZA A,A ; FREE-STORAGE POINTERS
MOVE A,VT.ITY ;NORMALLY, T, BUT FOR NIL #T
POPJ P,
LATOM: ;SKIP IF EQ TEST IS SUFFICIENT FOR EQUALITY
SPATOM: JUMPE A,1(T) ;SKIP IF NIL (WHICH IS SYMBOL)
SPAT1: SKOTT A,SY ;LEAVES TYPE BITS IN TT
JRST (T)
JRST 1(T)
PRPLSE: JUMPE A,PRPNIL
JRST FALSE
PLIST: SKOTT A,SY+LS ;SUBR 1 - FETCH PROPERTY LIST
JRST PRPLSE
HRRZ A,(A)
POPJ P,
PRPNIL: HRRZ A,NILPROPS ;SPECIAL HACK FOR NIL
POPJ P,
RPLIZ: JUMPE A,RPSNIL
%WTA NASER
SETPLIST:
SKOTT A,SY+LS ;SUBR 2 - SET PROPERTY LIST
JRST RPLIZ
HRRM B,(A)
MOVE A,B
POPJ P,
RPSNIL: HRRM B,NILPROPS ;SPECIAL HACK FOR NIL
POPJ P,
STENT: MOVEI TT,(A) ;GET ST ENTRY FOR A IN TT
LSH TT,-SEGLOG ;FOR USE WHERE SPACE MORE IMPORTANT THAN TIME
MOVE TT,ST(TT)
JRST (T)
VALLCE: WTA [NON-SYMBOL - VALUE-CELL-LOCATION!]
JRST VALLC1
VALLOC: PUSH P,CFIX1
VALLC1: JUMPE A,VLCNIL
JSP T,SPATOM
JRST VALLCE
HLRZ TT,(A)
HRRZ TT,(TT)
CAIN TT,SUNBOUND
SETZ TT,
POPJ P,
VLCNIL: MOVEI TT,VNIL
POPJ P,
SASSQ: SKIPA T,ASSQ ;[IASSQ]
SASSOC: MOVEI T,IASSOC
PUSHJ P,(T)
CALLF 0,(C)
POPJ P,
ASSOC: SKIPA T,SASSOC ;[IASSOC]
ASSQ: MOVEI T,IASSQ
PUSHJ P,(T) ;.SEE SSGCP1 - MUST PRESERVE R
FALSE: MOVEI A,NIL
POPJ P,
IASSOC: MOVEI F,TRUTH ;INTERNAL "ASSOC"
SETZM MEMV .SEE DELASSQ
JSP T,LATOM
JRST IASSC0
IASSQ: SETZB F,MEMV .SEE DELASSQ
SKIPN V.RSET
JRST IASSQF ;FAST VERSION OF ASSQ WITH NO CHECKING
IASSC0: SOVE B F A B ;ASSOC LOOP WITH CHECKING
MOVE TT,B
JRST IASSC7
IASSC3: HLRZ T,T
EXCH T,(P) ;(P) HOLDS SUCCESSIVE TAILS OF LIST
MOVEM T,MEMV
MOVE TT,T
IASSC7: SKOTT TT,LS
JRST IASSC4
MOVS T,@(P)
SKOTT T,LS
JRST IASSC3 ; "NIL" ENTRIES GET BYPASSED HERE
HLRZ B,(T)
CAMN B,-1(P) ;-1(P) HOLDS ITEM BEING SOUGHT
JRST IASSCX
SKIPN -2(P) ;-2(P) FLAG = () FOR ASSQ, NON-() FOR ASSOC
JRST IASSC3
MOVE A,-1(P)
PUSHJ P,EQUAL
MOVS T,@(P)
JUMPE A,IASSC3
IASSCX: POP P,B
POPI P,3
JRST IASWIN
IASSC4: SKIPN (P)
JRST IASLOS
JSP T,MEMQER
JRST IASSC3
IASLOS: POPI P,4
POPJ P,
IASSQ0: MOVEM B,MEMV
HLRZ B,T
IASSQF: JUMPE B,CPOPJ ;FAST VERSION OF ASSQ WITH NO CHECKING
MOVS T,(B) ; MUST PRESERVE AR2A - SEE FASLAP
HLRZ TT,(T) ; NOTE - MUST NOT USE OTHER THAN A, B, T, TT
CAIE A,(TT) ; BECAUSE OF ASSQ'S FOR READ CHAR MACROS
JRST IASSQ0
TRNN T,-1 ;SPURIOUS MATCH OF "()" WITH NULL SLOT
JRST IASSQ0 ; E.G. ((A . 1) () (() . 5))
IASWIN: POP P,T
HLRZ A,(B) ;BUT EXIT BY SKIPPING IF WIN, LEAVING FINAL
JRST 1(T) ; TAIL IN (B) - .SEE SSGCP1
;(DEFUN DISPLACE (X Y)
; (AND (ATOM X) (ERROR '|NOT A LIST - DISPLACE| X))
; (COND ((ATOM Y)
; (RPLACA X 'PROGN)
; (RPLACD X (NCONS Y)))
; ('T (RPLACA X (CAR Y))
; (RPLACD X (CDR Y)))))
DISPL0: WTA [NOT A LIST - DISPLACE!]
DISPLACE:
MOVEI TT,(A) ;INSURE FIRST ARG IS A LIST
LSH TT,-SEGLOG
SKIPL ST(TT) ;IS IT?
JRST DISPL0
MOVEI TT,(B) ;CHECK WHETHER SECOND ARG IS LIST OR NOT
LSH TT,-SEGLOG
SKIPL ST(TT) ;LIST?
JRST DISPL1 ;NOPE, SPECIAL TREATMENT
DISPL2: HLRZ AR1,(B) ;CAR Y
HRLM AR1,(A) ;RPLACA X
HRRZ AR1,(B) ;CDR Y
HRRM AR1,(A) ;RPLACD X
POPJ P, ;RETURN X
DISPL1: MOVEI C,QPROGN
HRLM C,(A) ;(RPLACA <1ST-ARG> 'PROGN)
PUSH P,A ;NOW (NCONS <2ND ARG>)
MOVEI A,(B)
PUSHJ P,$NCONS
HRRM A,@(P) ;(RPLACD <1ST-ARG> (NCONS <2ND-ARG>))
POP P,A ;RETURN FIRST ARG
POPJ P,
;; IN FOLLOWING TW FUNS, CAN PUT A "PAGE NUMBER" INTO ACC A WITH 'IMPUNITY'
PUREP: LSH A,-SEGLOG ;find the entry in the segment table
MOVE TT,ST(A) ;(we want the left half too)
TLNE TT,ST.PUR
JRST TRUE
JRST FALSE
WRITEABLEP:
LSH A,-<SEGLOG+SGS%PG-1>
IFN ITS,[
.CALL [SETZ ? SIXBIT /CORTYP/ ? A ? %CLOUT,,A ((SETZ)) ]
CAIA
JUMPL A,TRUE
] ;END OF IFN ITS
IFN D20,[
HRLI A,.FHSLF
RPACS
TLNE B,(PA%WT)
JRST TRUE
] ;END OF IFN D20
IFN D10,[
IFN SAIL,[
SETZ TT,
CALLI TT,400021 ;SEGNUM ON SAIL (TEST FOR HISEG)
JUMPE TT,TRUE
] ;END OF IFN SAIL
CAIGE A,HILOC
JRST TRUE
] ;END OF IFN D10
JRST FALSE
SUBTTL GET, FBOUNDP, GETL, PUTPROP, REMPROP FUNCTIONS
$GET: JSP TT,GETCHK
JRST FALSE
JFCL ;LET ORDINARY HUNKS GO THRU
GET1: HRRZ TT,(A) ;MUST PRESERVE B, C, AR1, T, D
;(SEE EVAL AT EV3, MKNAM3, SETF1B, .REARRAY, AND ARRY1)
HLRZ A,(TT) ;ALSO PRESERVE R, SEE UUOH1 AND SEE PRNN2
CAIN A,(B) ;ALSO AR2A AND F, SEE FASLOAD
JUMPN TT,GET2
HRRZ A,(TT) ;USES ONLY A,B,TT
JUMPN A,GET1
POPJ P,
GET2: HRRZ TT,(TT)
HLRZ A,(TT)
POPJ P,
SARGET: MOVEI TT,(A)
LSH TT,-SEGLOG
MOVE TT,ST(TT)
TLNE TT,SA
POPJ P,
ARGET: JSP T,SPATOM ;GET ARRAY PROPERTY FROM ATOM
JSP T,PNGE1
ARGET1: MOVEI B,QARRAY
JRST GET1
PNGET: JSP T,SPATOM ;INTERNAL SUBROUTINE -GET PNAME PROP FROM ATOM
PNGT1: JSP T,PNGE
PNGT0: SKIPN A ;SAVES B
SKIPA TT,[$$$NIL]
HLRZ TT,(A) ;MUST DO IT INTO TT SO AS TO HAVE
HRRZ A,1(TT) ; CONTINUOUS GC PROTECTION
POPJ P,
.SEE CRSR40
GETCHK: ROT A,-SEGLOG ;CHECK FIRST ARG FOR GET, GETL, AND PUTPROP
HLL TT,ST(A) ;SKIP 2 IF OK, 1 IF NON-USER HUNK,
ROT A,SEGLOG ; ELSE NO SKIP
TLNE TT,SY ;SYMBOL IS SUPER-WIN
JRST 2(TT)
TLNN TT,LS
JRST GTCK1
TLNN TT,HNK
JRST 2(TT) ;REGULAR LIST IS FINE TOO
PUSH FXP,T
PUSHJ P,USRHNP
JUMPE T,[ POP FXP,T
JRST 1(TT) ] ;SKIP 1 FOR NON-USER HUNK
POP FXP,T
GTCK1: JUMPN A,(TT) ;NO SKIP -- RANDOM FROB
MOVEI A,NILPROPS ;SIGH, SPECIAL CASE FOR ()
JRST 2(TT)
FBOUNDP: MOVEI B,FBDPL
GETL: SKOTT B,LS
JUMPN B,GETLE
GETLA: JSP TT,GETCHK
JRST FALSE
JFCL
GETL1: JUMPE B,FALSE ;FLUSH DEGENERATE CASE OF NO PROPS
JRST GETL1A
GETL0: HRRZ A,(A) ;USES A,B,C,T,TT
JUMPE A,CPOPJ
GETL1A: HRRZ A,(A) ;GET NEXT OFF PROPERTY LIST
JUMPE A,CPOPJ
HLRZ T,(A)
MOVE C,B
GETL4: HLRZ TT,(C) ;MEMQ IT DOWN LIST OF PROPS
CAIN T,(TT)
POPJ P,
HRRZ C,(C)
JUMPN C,GETL4
JRST GETL0
;;; ARGUMENTS ARE A SYMBOL, A VALUE, AND AN INDICATOR.
;;; THE INDICATOR MUST NOT BE A PDL QUANTITY (RECALL THAT THE
;;; EQNESS OF SUCH QUANTITIES IS UNDEFINED IN THE LANGUAGE ANYWAY).
;;; THE VALUE IS PDLNMK'D IF NECESSARY. THE SYMBOL MAY BE A LIST
;;; (KNOWN AS A "DISEMBODIED PROPERTY LIST"; THE CDR IS THE PLIST).
;;; IF THE PROPERTY ALREADY EXISTS, THE NEW VALUE IS INSTALLED THERE.
;;; OTHERWISE A NEW PROPERTY IS INSTALLED AT THE FRONT OF THE
;;; PROPERTY LIST. IF THE PROPERTY ALREADY EXISTS IN A PORTION
;;; OF THE PROPERTY LIST THAT IS PURE, ENOUGH OF THE PURE PART
;;; IS COPIED AS IMPURE LIST STRUCTURE TO PERMIT THE PUTPROP.
;;; IF THE VALUE OF *PURE IS NON-NIL, THEN THE VALUE IS PURCOPY'D
;;; AND THE NEW PROPERTY LIST CELLS, IF ANY, ARE PURE-CONSED.
PUTPROP:
JSP TT,GETCHK ;NORMALIZE FIRST ARG
JRST PROPER ;DONT TRY "PUT"TING ON RANDOM FROBS
JFCL ; LET NON-USER HUNKS GO THRU
CAML B,NPDLL ;MAKE A QUICK TEST ON THE SECOND ARGUMENT
CAML B,NPDLH ;SHIP-OF-THE-DESERT TEST (TWO CAML'S)
JRST CSET0Q
EXCH B,A ;LOSE - MUST PDLNMK THE VALUE
JSP T,PDLNMK
EXCH B,A
CSET0Q: MOVEI T,(A)
CSET0: HRRZ T,(T) ;MUST SAVE AR1,R,F FOR FASLOAD - SEE LDENT
JUMPE T,CSET2 ;SEARCH FOR AN EXISTING PROPERTY
HLRZ TT,(T)
HRRZ T,(T)
CAIE TT,(C)
JRST CSET0
JSP D,CSET8 ;SKIPS, UNLESS HAD TO PURCOPY THE PROPERTY
JRST CSET5
SKOTTN T,PUR
JRST CSET4
CSET0A: ;IF PROPERTY EXISTS ALREADY (IN IMPURE CELL)
PURTRAP CSET4,T,HRLM B,(T)
BRETJ:
SPROG2: MOVEI A,(B) ;RETURN VALUE
POPJ P,
;; DOESN'T HAVE SUCH A PROPERTY, SO CONS ONE UP
CSET2: PUSH P,A
JSP D,CSET8 ;SKIPS, UNLESS HAD TO PURCOPY THE THING
JRST CSETP1 ; SO, IF IT MUST BE A 'PURE' PROPERTY ...
CSET2A: HRRZ A,(A) ;PLAIN VANILLA CONSES
PUSHJ P,XCONS
HRRZ B,C
JSP T,%PDLXC ;IN CASE SOMEONE TRIES TO USE A PDLNUM
POP P,C ;ORIGINAL ATOM WAS SAVED ON P
HRRM A,(C) ;SETPLIST TO NEW THING
$CADR: HRRZ A,(A) ;RETURN VALUE (I.E. GET IT BACK)
$CAR: HLRZ A,(A)
C$CAR: POPJ P,$CAR
;; A HAS BEEN PUSHED ONTO P WHEN WE GET HERE
CSETP1: MOVE A,B
SKIPA T,(P) ;GET PLIST OF OBJECT
CSETP2: HRRZ T,(B) ;LOOP UNTIL PURE PART FOUND (OR END OF PLIST)
HRRZ B,(T)
JUMPE B,CSETP3
SKOTT B,PUR
JRST CSETP2
CSETP3: PUSHJ P,PCONS ;pure-cons the words of the PLIST
MOVEI B,(A)
MOVEI A,(C)
PUSHJ P,PCONS
HRRM A,(T)
POPI P,1
JRST $CADR
CSET8: SKIPN V.PURE ;PURCOPY THE PROPERTY IF IT IS OF
JRST 1(D) ; THE KIND FOUND ON 'PUTPROP'
SKIPA TT,VPUTPROP ;SKIP IF NO PURCOPYING ACTUALLY HAPPENS
CSET8A: HLRZS TT
JUMPE TT,1(D) ;FAST, OPEN-CODED MEMQ LOOP
MOVS TT,(TT)
CAIE C,(TT)
JRST CSET8A
PUSH FXP,D ;RET ADDR!
PUSH FXP,T
PUSHJ FXP,SAV2 ;SAVES B,A ON TOP OF 'P'
MOVE A,B
PUSHJ P,PURCOPY ;PURCOPY THE PROP VALUE
MOVEM A,-1(P)
SKOTT C,SY ;IS THE FLAG A SYMBOL?
JRST CSET8B
HLRZ T,(C) ;POINTER TO THE SY2 BLOCK
MOVE T,SYMVC(T) ;GET THE FLAG BITS
TLNE T,SY.PUR ;IS IT ALREADY PURE?
JRST CSET8B
MOVE A,C
PUSHJ P,PURCOPY ;NO, PURCOPY IT
MOVE C,A
CSET8B: POP FXP,T
JRST RST2
CSET5: SKOTTN T,PUR ;SO, PROPERTY IS TO BE PURIFIED!
JRST CSET0A ;BUT EXISTING PROP IS PURE, SO TRY TO CLOBBER
SOVE A B ;BUT IF EXISTING PROP WAS IMPURE, THEN REMPROP
MOVE B,C
PUSHJ P,REMPROP ; IT AND TRY THE "FRESH PROPERTY" ROUTE
POP P,B
JRST CSETP1
;; COME HERE BY PURTRAP WHEN TRYING TO CLOBBER INTO AN UNWRITEABLE PAGE.
CSET4: PUSHJ FXP,SAV2
MOVEI T,(A) ;FOOL PROPERTY IS IN A PURE PAGE
CSET4A: HRRZ TT,(T) ;COPY ENOUGH OF THE PROPERTY LIST
PUSHJ P,CSET4C ; TO PERMIT THE PUTPROP
HLRZ A,(TT)
CAIE A,(C)
JRST CSET4A
PUSHJ FXP,RST2
JRST CSET0A
REMPROP: ;SUBR 2 - REMOVE PROPERTY FROM ATOMIC SYMBOL
SKOTT A,LS+SY
JRST REMP7 ;MUST SAVE AR1,R,F FOR FASLOAD - SEE LDENT
REMP0: SKIPA D,A ;SAVE C, AR2A - SEE DEFPROP AND DEFUN
REMP1: HRRZ D,(T)
HRRZ T,(D)
JUMPE T,FALSE
MOVS TT,(T)
CAIE B,(TT)
JRST REMP1
HLRZ T,TT
REMP20: HRRZ TT,(T) ;A IS GC-PROTECTING THE ATOM
PURTRAP REMP3,D, HRRM TT,(D)
MOVEI A,(T)
POPJ P,
REMP7: JUMPN A,RMPER0
MOVEI A,NILPROPS
JRST REMP0
CSET4C: PUSHJ P,.+1 ;HAIRY WAY TO DO A DOUBLE COPY!
HRRZ A,(T)
MOVE B,(A)
PUSHJ P,CONS1
HRRM A,(T)
MOVEI T,(A)
POPJ P,
REMP3: PUSH P,A ;COME HERE ON PURE PAGE TRAP
PUSH P,B ;A ON PDL GC PROTECTS ATOM
MOVEI T,(A)
REMP3A: PUSHJ P,CSET4C ;COPY ENOUGH OF PROPERTY LIST
HRRZ TT,(T) ; TO DO REMPROP
HLRZ A,(TT)
CAME A,(P)
JRST REMP3A
HRRZ A,(TT)
HRRZ TT,(A)
HRRM TT,(T)
JRST POP2J
SUBTTL NOT, NULL, BOUNDP, PAIRP
NOTNOT: JUMPE A,CPOPJ ;REPLACES A NON-NIL VALUE BY T
JRST TRUE
NOT:
$NULL: JUMPN A,FALSE
TRUE: MOVE A,VT.ITY
CNOT: POPJ P,NOT
BOUNDP: JUMPE A,TRUE ;SUBR 1
JSP T,SPATOM ;TRUE IFF THE SYMBOL ARGUMENT IS BOUND
JSP T,PNGE1 ;ERROR FOR NON-SYMBOLS
HLRZ T,(A) ;GET VALUE CELL
HRRZ A,(T) ;DO IT INTO T TO PROTECT FROM GC
HRRZ T,(A)
CAIN T,QUNBOUND
TDZA A,A
MOVE A,VT.ITY
POPJ P,
PAIRP: PUSHJ P,TYPEP
CAIE A,QLIST
TDZA A,A
MOVE A,VT.ITY
POPJ P,
;;;; LAST, RUNTIME
LAST: PUSHJ P,LLASTCK ;SUBR 1 - GET LAST CONS OF A LIST
JRST LAST4
LAST5: MOVE A,D
POPJ P,
LAST4: CAIE F,-1
JRST LAST5 ; (A B C ... . Z) CASE
SKOTTN A,LS ;SO WE TOOK NO CDRS!
JRST LAST5 ; (A . Z) CASE
HRRZ TT,C2 ;FOO! ALLOW RANDOM PTS TO PDL, FOR SAKE
CAILE A,(TT) ; OF THAT KLUDGEY CODE OUTPUT BY THE
CAILE A,(P) ; COMPLR FOR MAPCAN ETC.
JRST LASTER
SKIPN TT,(A)
POPJ P,
MOVEI A,(TT)
JRST LAST
LLASTCK: MOVEI F,-1 ;"LONG" LAST CHECK
; RETURNS <262143.-<NO. OF CDRS TAKEN>> IN F
; MUST PRESERVE T,R. SEE APPEND, REVERSE, NTHCDR
LASTCK: SKIPN D,A ;SKIP RETURN ON NORMAL-FORM LIST
JRST POPJ1 ; LEAVES PTR TO LAST NODE IN D,
SKOTT D,LS ;() IS OK, AND IS ITS OWN "LASTNODE"
POPJ P, ; BUT OTHER ATOMS LOSE
JUMPLE F,POPJ1 ; LIMITED TO (F) CDRS
LAST1: HRRZ TT,(D)
SKOTT TT,LS
JRST LAST2
HRRZ D,(D)
SOJG F,LAST1
JRST POPJ1
LAST2: HRRZ TT,(D)
JUMPE TT,POPJ1
POPJ P, ;ENDED WITH NON-NULL ATOM
;;; RETURN RUNTIME AS A FIXNUM IN MICROSECOND
;;; UNITS (NOT NECESSARILY THAT ACCURATE THOUGH).
$RUNTIME:
PUSH P,CFIX1 ;SUBR 0 NCALLABLE
IT$ .SUSET [.RRUNT,,TT] ;RUNTIME IN 4-MICROSECOND UNITS
10$ SETZ TT,
10$ RUNTIM TT, ;RUNTIME IN MILLISECONDS
IFN D20,[
LOCKI ;MUST LOCKI OVER ALL JSYS'S
MOVEI 1,.FHSLF ;GET RUNTIME FOR SELF
RUNTM
MOVE TT,1 ;RUNTIME IN MILLISECONDS
SETZB 1,3 ;1 AND 3 HAVE DANGEROUS CRUD
UNLOCKI
] ;END OF IFN D20
RNTM1: ;CONVERT NUMBER FROM INTERNAL UNITS TO USECS
IT$ LSH TT,2
IT% IMULI TT,1000.
POPJ P, ;ANSWER IN MICROSECONDS
SUBTTL TIME FUNCTION
;;; RETURN A TIME STANDARD AS A FLONUM IN SECONDS.
;;; WE ENDEAVOR TO MAKE THIS INCREASE MONOTONICALLY AND TO MEASURE
;;; THE PASSAGE OF REAL TIME. IN PRACTICE, WE MAY NOT MEASURE
;;; REAL TIME WHILE THE TIME-SHARING SYSTEM IS TEMPORARILY STOPPED,
;;; AND WE PERMIT A GLITCH (RESET TO 0) AT MIDNIGHT OF EACH DECEMBER 31.
;; DECIDE ON THE "TIMER CONSTANT" INTERVAL -- 1/30 SEC FOR ITS, 1/1000 FOR D20
IFN ITS,[
DEFINE TMCNST
30.0!TERMIN
DEFINE TMXCNST
30.!TERMIN
]
IFN D20,[
DEFINE TMCNST
1000.0!TERMIN
DEFINE TMXCNST
1000.!TERMIN
]
$TIME: PUSH P,CFLOAT1 ;SUBR 0 NCALLABLE
IFN ITS\D20,[
IT$ .RDTIME TT, ;GET AMOUNT OF TIME SYSTEM HAS BEEN UP
IFN D20,[
LOCKI ;MUST LOCKI AROUND THE JSYS
TIME ;GET TIME SINCE SYSTEM LAST RESTARTED IN MSECS
MOVE TT,1
SETZ 1, ;ZERO CRUD
UNLOCKI
]
; CAMGE TT,[30.*3600.*24.*28.] ;FOUR WEEKS OF 1/30 SEC TICS
; JRST .+3
; SUB TT,[30.*3600.*24.*28.]
; JRST .-3
JSP T,IFLOAT
FDVRI TT,(TMCNST)
] ;END OF IFN ITS\D20
IFN D10,[
IFE SAIL,[
MOVE T,[%CNDTM] ;INTERNAL DATE/TIME STANDARD,
GETTAB T, ; AS DATE,,FRACTION OF DAY
JRST TIME3 ; 1-ORIGINED ON NOVEMBER 18, 1858
ADD T,[2*365.+1-43.,,] ;ALTER TO 0-ORIGIN ON JANUARY 1,1856
IDIV T,[365.*4+1,,] ;GET THIS MOD A FOUR-YEAR INTERVAL
JSP T,IFLOAT
FMPR T,[.OP <FSC -22>,86400.0,0] ;CONVERT TO SECONDS
POPJ P,
TIME3: MSTIME TT, ;THIS PRODUCES GLITCHES AT MIDNIGHT
JSP T,IFLOAT
FDVRI TT,(1000.0)
] ;END OF IFE SAIL
IFN SAIL,[
ACCTIM TT,
HLRZ D,TT
IDIVI D,12.*31. ;YEAR-1964 IN D
IDIVI R,31. ;MONTH-1 IN R, DAY-1 IN F
ADD F,TIME8(R) ;ADD IN NUMBER OF DAYS PRECEDING CURRENT MONTH
TLNN D,3 ;SKIP IF NOT LEAP YEAR
CAIL R,2 ;SKIP IF JANUARY OR FEBRUARY
SUBI F,1 ;ADJUST FOR CRETINOUS LEAP YEARS
IMULI F,24.*3600. ;CONVERT TO SECONDS FROM LAST MIDNIGHT TO MIDNIGHT LAST DEC 31
TLZ TT,-1
ADD TT,F ;ADD IN SECONDS SINCE MIDNIGHT LAST
JSP T,IFLOAT
] ;END OF IFN SAIL
] ;END OF IFN D10
POPJ P,
IFN SAIL,[
TIME8:
ZZZ==1 ;WILL SUBTRACT THIS 1 BACK EXCEPT FOR AFTER FEB 29'S
IRP X,,[31.,28.,31.,30.,31.,30.,31.,31.,30.,31.,30.,31.]
ZZZ
ZZZ==ZZZ+X
TERMIN
IFN ZZZ-366., WARN [TABLE OF CUMULATIVE DAYS IN MONTHS LOSES]
EXPUNGE ZZZ
] ;END OF IFN SAIL
SUBTTL EQUAL FUNCTION
EQUAL: CAIN A,(B) ;EQ THINGS ARE EQUAL
JRST TRUE ; .SEE ASSOC - MUST PRESERVE F
MOVEM P,EQLP
PUSHJ P,EQUAL1 ;EQUAL1 ACTUALLY RETURNS ONLY IF EQUAL
JRST TRUE
EQUAL0: CAIN A,(B) ;EQ THINGS ARE EQUAL
POPJ P,
EQUAL1: MOVEI T,(A)
MOVEI TT,(B)
ROTC T,-SEGLOG ;GET TYPES OF ARGS
HRRZ T,ST(T)
MOVE TT,ST(TT)
CAIN T,(TT) ;MUST HAVE SAME TYPE TO BE EQUAL
2DIF JRST @(T),EQLTBL,QLIST .SEE STDISP
IFE HNKLOG, JRST EQLOSE
IFN HNKLOG,[
SKIPE VHUNKP
JRST EQL1A
TLNN TT,LS ;IF VHUNKP CONTAINS NIL, THEN WANT TO
JRST EQLOSE ; TREAT ALL HUNKS AS IF THEY WERE LIST CELLS
SKOTT A,LS
JRST EQLOSE
JRST EQLLST
EQL1A: SKIPN USRHNK ;IS THE USRHUNK/SENDI FEATURE ENABLED?
JRST EQLOSE
TLNE TT,HNK ;IF VHUNKP CONTAINS T, THEN WANT TO SEND
JRST EQL1B ; THE "EQUAL" MESSAGE IF EITHER ARG IS HUNK
SKOTT A,HNK
JRST EQLOSE
SKIPA
EQL1B: EXCH A,B ;MUST ALWAYS SEND TO FIRST ARG
JRST EQLH4A
] ;END OF IFN HNKLOG
EQLLST: PUSH P,(A)
PUSH P,(B)
HLRZ A,(A)
HLRZ B,(B)
PUSHJ P,EQUAL0 ;COMPARE CARS
HRRZ A,-1(P)
HRRZ B,0(P)
SUB P,R70+2
JRST EQUAL0 ;COMPARE CDRS
EQLTBL: EQLLST ;LIST
EQLNUM ;FIXNUM
EQLNUM ;FLONUM
DB$ EQLNM2 ;DOUBLE
CX$ EQLNM2 ;COMPLEX
DX$ EQLNM4 ;DUPLEX
BG$ EQLBIG ;BIGNUM
EQLOSE ;PNAME ATOMS MUST BE EQ TO BE EQUAL
HN$ REPEAT HNKLOG+1, EQLHNK ;HUNKS REQUIRE RECURSION LIKE LISTS
EQLOSE ;RANDOMS AND NIL MUST BE EQ TO BE EQUAL
EQLOSE ;ARRAY POINTERS MUST BE EQ TO BE EQUAL
IFN .-EQLTBL-NTYPES, WARN [WRONG LENGTH TABLE]
IFN DXFLAG,[
EQLNM4:
KA MOVE T,2(A)
KA MOVE TT,3(A)
KIKL DMOVE T,2(A)
CAMN T,2(B)
CAME TT,3(B)
JRST EQLOSE
] ;END OF IFN DXFLAG
IFN DBFLAG+CXFLAG,[
EQLNM2: MOVE T,1(A)
CAME T,1(B)
JRST EQLOSE
] ;END OF IFN DBFLAG+CXFLAG
EQLNUM: MOVE T,(A)
CAMN T,(B) ;COMPARE VALUES OF NUMBERS
POPJ P,
EQLOSE: MOVE P,EQLP ;THE ULTIMATE FALSITY - ESCAPE BACK
JRST FALSE ; TO TOP LEVEL OF ENTRY TO EQUAL WITH FALSE
IFN BIGNUM,[
EQLBIG: HLRZ T,(A)
HLRZ TT,(B)
CAIE T,(TT) ;EQUAL BIGNUMS HAVE EQ SIGNS
JRST EQLOSE ; AND CDRS ARE EQUAL LISTS OF FIXNUMS
HRRZ A,(A) ;CHECK ONLY EQUAL CDRS
HRRZ B,(B)
JRST EQUAL0
] ;END OF IFN BIGNUM
IFN HNKLOG,[
EQLHNK: SKIPN VHUNKP
JRST EQLLST
SKIPE USRHNK
JRST EQLHN4
EQLHN3: PUSH P,A
PUSH P,B
MOVNI T,1
2DIF [LSH T,(TT)]0,QHUNK0 ;REALLY SHOULD BE ASH, BUT LSH IS FASTER ON KL10
HRLI B,(T)
PUSH P,A
PUSH P,B
EQLHN1: HLRZ A,@-1(P)
HRRZ B,(P)
HLRZ B,(B)
PUSHJ P,EQUAL0
HRRZ A,@-1(P)
HRRZ B,(P)
HRRZ B,(B)
PUSHJ P,EQUAL0
MOVE T,(P)
AOBJP T,EQLHN2
MOVEM T,(P)
AOS -1(P)
JRST EQLHN1
EQLHN2: SUB P,R70+4
POPJ P,
EQLHN4: SKIPN USRHNK ;Is the USRHUNK/SENDI feature enabled?
JRST EQLHN3 ; no, check the parts
EQLH4A: PUSH FXP,EQLP ;Gotta ask the user predicate
PUSH FXP,TT
PUSHJ FXP,SAV5
PUSHJ P,USRHNP ;Check for user-hunkness
JUMPE T,EQLHN5 ;If not, go hack it normally
PUSHJ P,[PUSH P,A
PUSH P,[QEQUAL]
PUSH P,B
MOVNI T,3
XCT SENDI ;Send the object a message
]
EQLH4X: PUSHJ FXP,RST5M1
POP FXP,TT
POP FXP,EQLP
JUMPE A,EQLOSE
JRST POPBJ
EQLHN5: PUSHJ FXP,RST5
POP FXP,TT
POP FXP,EQLP
JRST EQLHN3
;; Send a message to a hunk with object in A and message in B
USRSAB: PUSHJ FXP,SAV5M2 ;Save AC's
PUSH P,[RST5M2]
USRAB: PUSH P,A ;Don't save AC's if called here
PUSH P,B
XCT SENDI
;; Check A for being a HUNK and a USRHUNK, return answer in T
USRHPP: MOVEI T,(A)
LSH T,-SEGLOG
MOVE T,ST(T) ;Get segment table entry
TLNE T,HNK ;Is it a hunk at all?
JRST USRHNP ; Yes, call user's hook.
TFALSE: SETZ T, ;Nope....
POPJ P,
;; If we are using the USRHNK, assuming we already know it's a hunk.
USRHNP: SKIPE USRHNK ;Must have both a USRHUNK and a SENDI
SKIPN SENDI ; in order to make use of either
JRST TFALSE
PUSHJ FXP,SAV5
PUSHJ P,SAVX5
XCT USRHNK ;Check it out
PUSHJ P,RSTX5
MOVE T,A ;Return value in T, not A
PUSHJ FXP,RST5
POPJ P,
] ;END OF IFN HNKLOG
SUBTTL NCONC, *NCONC, APPEND, *APPEND, REVERSE, NREVERSE, NRECONC
NCONC: TDZA R,R ;LSUBR - DESTRUCTIVELY CATENATE LISTS
APPEND: MOVEI R,.APPEND-.NCONC ;LSUBR - CATENATE BY COPYING
JUMPE T,FALSE
POP P,B
APP2: AOJE T,BRETJ
POP P,A
JUMPE A,APP2
SKIPE V.RSET
PUSHJ P,APRVCK
APP3: PUSHJ P,.NCONC+1(R) ;FIRST INST OF .NCONC IS "JUMPE A,BRETJ"
MOVE B,A
JRST APP2
.NCONC: JUMPE A,BRETJ .SEE APP3
.NCNC1: MOVEI TT,(A) ;SUBR 2 (*NCONC)
.NCNC2: HRRZ D,(TT)
JUMPE D,.NCNC3
HRRZ TT,(D)
JUMPN TT,.NCNC2
HRRM B,(D)
POPJ P,
.NCNC3: HRRM B,(TT)
POPJ P,
.APPEND: JUMPE A,BRETJ ;SUBR 2 (*APPEND)
MOVEI C,AR1 ;FIRST INST MUST BE JUMPE A,BRETJ
MOVE AR2A,A ;MUST SAVE T,D - SEE MAKOBLIST
APP1: HLRZ A,(AR2A)
PUSHJ P,CONS
HRRZ B,(A)
HRRM A,(C)
MOVE C,A
HRRZ AR2A,(AR2A)
JUMPN AR2A,APP1
AR1RETJ:
SUBS4: MOVEI A,(AR1)
POPJ P,
REVERSE: SKIPE V.RSET ;SUBR 1 - USES A,B,C,T,F
PUSHJ P,APRVCK
MOVEI C,(A)
MOVEI A,NIL ;REVERSES A LIST BY CONSING UP A COPY
REV1: JUMPE C,CPOPJ ; OF THE TOP LEVEL IN REVERSE ORDER
HLRZ B,(C)
PUSHJ P,XCONS
HRRZ C,(C)
JRST REV1
APRVCK: PUSHJ P,SAVX3 ;APPEND/REVERSE ARGUMENT CHECKING
REV4: PUSHJ P,LLASTCK ;MUST SAVE TT,D,R FOR MANY PLACES WHICH
JRST REVER ; CALL REVERSE/NREVERSE
JRST RSTX3
NREVERSE: MOVEI B,NIL ;SUBR 1 - REVERSE A LIST USING RPLACD'S
NRECONC: JUMPE A,BRETJ ;SUBR 2 - (NRECONC X Y)=(NCONC (NREVERSE X) Y)
SKIPE V.RSET ; - USES A,B,C,T,F
PUSHJ P,APRVCK
NREV1: HRRZ C,(A) ;ONLY 3 INSTRUCTIONS PER CELL! ZOOM!
HRRM B,(A)
JUMPE C,CPOPJ
HRRZ B,(C)
HRRM A,(C)
JUMPE B,CRETJ
HRRZ A,(B)
HRRM C,(B)
JUMPN A,NREV1
JRST BRETJ
SUBTTL GENSYM FUNCTION
GENSYM: JUMPN T,GENSY1
GENSY0: MOVE TT,[010700,,GNUM] ;STANDARD GENSYMER
MOVEI B,"0 ;WILL INCREMENT NUMERICAL PART
GENSY2: LDB T,TT ; AND GIVE OUT GENSYMED ATOM
AOS T
DPB T,TT
CAIG T,"9
JRST GENSY3
DPB B,TT
ADD TT,[070000,,0]
CAMGE TT,[350000,,]
JRST GENSY2
GENSY3: PUSH FXP,PNBUF
MOVE TT,GNUM
MOVEM TT,PNBUF
MOVEI C,PNBUF
PUSHJ P,PNGNK2
POP FXP,PNBUF
POPJ P,
GENSY1: MOVEI D,QGENSYM
AOJN T,S1WNALOSE
GENSY7: POP P,A
SKOTT A,FX
JRST GENSY5
MOVE TT,(A)
JUMPL TT,GENSY8
MOVE T,[010700,,GNUM]
GENSY6: IDIVI TT,10. ;INSTALL 4 DECIMAL DIGITS
ADDI D,"0 ; IN GENSYM COUNTER
DPB D,T
ADD T,[070000,,0]
CAMGE T,[350000,,]
JRST GENSY6
JRST GENSY3
GENSY5: TLNN TT,SY
JUMPN A,GENSY8
JSP T,CHNV1D
DPB TT,[350700,,GNUM]
JRST GENSY0
SUBTTL MEMBER, MEMQ, SUBST
MEMBER: ;USES A,B,AR1,AR2A,T,TT
SMEMBER:: MOVEI AR1,(A) ; FOR BENEFIT OF DELETE
MOVEI AR2A,(B)
JSP T,LATOM
JRST MEMBR
SMEMQ: SETZM MEMV ;USES A,B,T,MUST PRESERVE AR1,AR2A;SEE GTSPC3
PUSH P,B
MEMQ2: SKOTT B,LS
JRST MEMQ4
HLRZ T,(B)
CAMN A,T
JRST MEMQ3
HRRM B,MEMV .SEE DELQ ;;used as a "previous-cell" ptr
HRRZ B,(B)
JRST MEMQ2
MEMQ3: POPI P,1
JRST SPROG2
MEMQ4: JUMPE B,MEMQ3
JSP T,MEMQER
JRST MEMQ2
MEMBR: SETZM MEMV
PUSH P,B
MEMB2: SKOTT AR2A,LS
JRST MEMB4
MOVE A,AR1
HLRZ B,(AR2A)
PUSHJ P,EQUAL
JUMPN A,MEMB3
HRRM AR2A,MEMV
HRRZ AR2A,(AR2A)
JRST MEMB2
MEMB3: POPI P,1
AR2ARETJ:
MOVEI A,(AR2A)
POPJ P,
MEMB4: JUMPE AR2A,MEMB3
JSP T,MEMQER
MOVE AR2A,B
JRST MEMB2
MEMQ: SKIPE V.RSET
JRST SMEMQ
MEMQ1: JUMPE B,FALSE .SEE THRCAB ;REQUIRES MEMQ1 PRESERVES TT
HLRZ T,(B)
CAIN T,(A)
JRST BRETJ
HRRZ B,(B)
JRST MEMQ1
;;; SUBSTITUTE A FOR EQUAL OCCURRENCES OF B IN C.
SUBST: JSP T,PDLNMK ;SUBR 3
EXCH A,C
JSP T,PDLNMK
EXCH A,C
SKIPA AR1,A
SUBS0A: SKIPA A,AR1
SKIPA AR2A,B
MOVE B,AR2A
PUSH P,C
MOVE A,C
PUSHJ P,EQUAL
POP P,C
JUMPN A,AR1RETJ
SUBS1: SKOTT C,LS ;FOO, THIS INCLUDES HUNKS!
JRST SPROG3
PUSH P,C
IFN HNKLOG,[
TLNE TT,HNK
JRST SUBSTH
]; END of IFN HNKLOG,
HLRZ C,(C) ;A "PAIR" CELL
PUSHJ P,SUBS0A
EXCH A,(P)
HRRZ C,(A)
PUSHJ P,SUBS0A
POP P,B
JRST XCONS
IFN HNKLOG,[
SUBSTH: MOVEI A,(C)
PUSH FXP,TT
PUSHJ P,USRHNP ;Check for being a USER extended hunk
POP FXP,TT
JUMPE T,SUBST8
POP P,A
SOVE AR1 AR2A
PUSHJ P,[PUSH P,A
PUSH P,[QSUBST]
PUSH P,AR1
PUSH P,AR2A
MOVNI T,4
XCT SENDI ;Send the frob a SUBST message
]
SUBSH0: RSTR AR2A AR1
POPJ P,
SUBST8: MOVEI R,1 ;R GETS MAX SIZE IN WORDS
2DIF [LSH R,(TT)]0,QHUNK0
PUSH FXP,R ;CNTR WHILE COPYING
PUSH P,R70 ;TEMP PTR WHILE COPYING
MOVE TT,R
LSH TT,1
PUSHJ P,ALHUNK ;SAVES AR1,AR2A
PUSH P,A
SUBST5: SOSGE R,(FXP)
JRST SUBST6
ADD R,-2(P)
MOVE R,(R) ;GET WORD OF ORIGINAL HUNK
HRRZM R,-1(P) ; AND REMEMBER RH OF IT
HLRZ C,R
CAIN C,-1
JRST SUBS5A
PUSHJ P,SUBS0A ;COPY LH
MOVE C,A
SUBS5A: EXCH C,-1(P)
CAIN C,-1
JRST SUBS5B
PUSHJ P,SUBS0A ;COPY RH
MOVE C,A
SUBS5B: MOVE R,(FXP)
ADD R,(P) ;POINTER TO NEW COPY
HRRM C,(R) ;INSTALL RH
MOVE B,-1(P)
HRLM B,(R) ;INSTALL LH
JRST SUBST5
SUBST6: POP P,C
POPI P,2
POPI FXP,1
]; End of IFN HNKLOG,
CRETJ:
SPROG3: MOVE A,C
POPJ P,
SUBTTL DELQ, DELASSQ, DELETE, *DELQ, *DELETE
DELASSQ: MOVEI B,DASSQ
JRST DLT0
DELQ: MOVEI B,SMEMQ ;USES A,B,C,T,TT. MUST SAVE AR2A - SSMACRO
JRST DLT0
DELETE: MOVEI B,SMEMBER ;USES A,B,C,AR1,AR2A,T,TT
DLT0: MOVEI TT,-1 ;MUST SAVE R, SEE GCP6H1
CAMN T,XC-2
JRST DLT3
CAME T,XC-3
JRST DLTER
POP P,A
JSP T,FLTSKP
JRST DLT3
JSP T,IFIX
DLT3: MOVEM TT,DLTC
MOVEI TT,(P)
MOVE D,B
SKIPA B,(P)
DLT2: HRRM B,(TT)
MOVEM TT,TABLU1
MOVE A,-1(P)
SOSGE DLTC
JRST DLT1
PUSHJ P,(D) ;MEMBER or MEMQ or DASSQ
JUMPE A,DLT1
HRRZ B,(A)
SKIPN TT,MEMV
MOVE TT,TABLU1
JRST DLT2
DLT1: POP P,A
JRST POP1J
DASSQ: PUSHJ P,IASSQ ;SKIPS ON SUCCESS, WITH TAIL OF LIST FOUND IN B
MOVEI B,NIL
MOVE A,B
POPJ P,
.DELQ: SKIPA D,[SMEMQ]
.DELETE:
MOVEI D,MEMBER
PUSH P,A
PUSH P,B
MOVEI TT,-1
MOVE B,D
JRST DLT3
SUBTTL FLOATP, FIXP, NUMBERP, TYPEP, AND PDLNMK ROUTINE
IRP NUMP,,[FIXP,FLOATP,NUMBERP]BITS,,[FX+BN,FL,FX+FL+BN]
NUMP: SKOTT A,BITS
JRST FALSE ;RETURN NIL IF NOT OF DESIRED TYPE
MOVE TT,(A) ;RETURN T IF WHAT WE WANT. ALSO, TT GETS THE NUMBER.
JRST TRUE ;IF NUMBERP GETS A BIGNUM, TT GETS THE CORRECT SIGN, ANYWAY
TERMIN
TYPEP: JUMPE A,TYPNIL ;SUBR 1 - USES ONLY A
ROT A,-SEGLOG
HRRZ A,ST(A)
POPJ P,
TYPNIL: MOVEI A,QSYMBOL
POPJ P,
%SYMBOLP: ;SUBR 1
JSP T,SPATOM
JRST FALSE
JRST TRUE
NMCK0: POP P,A
NUMCHK: ;CHECK TO SEE THAT WE HAVE A NUMBER, THEN EXIT
IFE NARITH,[
BG% JSP T,FLTSKP
BG$ JSP T,NVSKIP
BG$ POPJ P,
JFCL ;FALLS INTO PDLNKJ
] ;END OF IFE NARITH
IFN NARITH, WARN [NUMCHK? PDLNMK?]
PDLNKJ: CAML A,NPDLL ;PDLNKJ = PDLNMK, THEN POPJ P,
CAMLE A,NPDLH
POPJ P,
MOVEI T,CPOPJ
PDLNMK: CAML A,NPDLL ;FIRST A QUICK AND DIRTY CHECK
CAMLE A,NPDLH
JRST (T)
PDLNM0: ROT A,-SEGLOG ;NOW TO CHECK THE ST ENTRY
SPECPRO INTROT
HLL T,ST(A)
ROT A,SEGLOG
NOPRO
TLNN T,$PDLNM ;SKIP IFF PDL NUMBER
JRST (T)
PUSH P,T
NMK1: MOVEM TT,PNMK1 ;EXPECTS TYPE BITS IN T
MOVE TT,(A)
HRRI T,PNMK2 ;MUST SAVE TT
TLNN T,FL ;FIGURE OUT WHICH KIND OF CONS TO DO
JRST FXCONS ; - FIXNUM
JRST FLCONS ; - FLONUM
PNMK2: MOVE TT,PNMK1 ;RESTORE TT FOR PDLNMK
CPDLNKJ: POPJ P,PDLNKJ
SUBTTL GCPRO AND SXHASH
GCPRO: JUMPE B,GCREL
CAIN B,QM ;SECOND ARG = ? MEANS ONLY GCLOOK
JRST GCLOOK
%GCPRO: MOVEI AR1,1 ;MUST SAVE R,F - FOR FASLOAD
GCPR1: CAIL A,IN0-XLONUM
CAILE A,IN0+XHINUM-1
SKIPA
POPJ P,
SKOTT A,SY
JRST GCPR2
JUMPLE AR1,CPOPJ
HLRZ T,(A)
MOVSI TT,SY.CCN\SY.OTC ;COMPILED CODE NEEDS ME BIT
MOVSI D,SY.PUR ;PURE SYMBOL BLOCK BIT
TDNN D,(T)
IORM TT,(T)
POPJ P,
GCPR2: MOVE AR2A,A ;SAVE ARG
PUSHJ P,SXHSH0 ;LEAVES HASHKEY IN D
MOVE A,AR2A
MOVE T,AR1 ;T=0 => RELEASE, ELSE PROTECT
.GCPRO: JUMPE A,CPOPJ
LOCKI
PUSH P,A ;PLACES ORIG ARG ON PDL
PUSHJ P,SAVX5 ;SAVES NUM ACS
SKIPE B,GCPSAR
JRST .GCPR5
MOVEI A,NIL
MOVE TT,LOSEF
ADDI TT,1
LSH TT,-1
PUSHJ P,MKLSAR
MOVE D,-2(FXP) ;RESTORE HASHKEY IN D
MOVEM B,GCPSAR
.GCPR5: MOVE T,D ;ARG ON P, AND SAVES NUM ACS ON FXP
LSH T,-1
IDIV T,LOSEF
PUSH FXP,TT
MOVEI A,(FXP)
PUSHJ P,@ASAR(B)
SUB FXP,R70+1
MOVEM R,-3(FXP)
MOVE B,A
MOVE A,(P) ;ORIG ARG ON P
PUSH P,B ;SAVE PROLIST BUCKET
SKIPN -4(FXP)
JRST GCRL1 ;GO RELEASE IF FLAG SO SET.
PUSHJ P,MEMBER
JUMPN A,GCPR3 ;ITEM ALREADY IN PROTECTIVE BUCKET
SKIPG -4(FXP)
JRST GCPR4
MOVE A,-1(P) ;ORIGINAL ARG
MOVE B,(P) ;CONSED ONTO PROLIST BUKET
PUSHJ P,CONS
MOVE R,-3(FXP)
HRRZ D,GCPSAR
JSP T,.STOR0
GCPR3: HLRZ A,(A)
GCPR4: PUSHJ P,RSTX5
SUB P,R70+2
UNLKPOPJ
GCRL1: CALLF 2,QDELETE ;GCRELEASE
MOVE R,-3(FXP)
HRRZ D,GCPSAR
JSP T,.STOR0
JRST GCPR4
GCREL: TDZA AR1,AR1
GCLOOK: MOVNI AR1,1
SKIPN GCPSAR
JRST FALSE
JRST GCPR1
SXHASH: PUSH P,CFIX1 ;SUBR 1 - NCALLABLE
PUSH P,F ;SAVE F - SEE DEFUN
PUSHJ P,SXHSH0
MOVE TT,D
POP P,F
POPJ P,
ATMHSH: ;HASH A PRINT NAME
BNHSH: SETZ T, ;HASH A BIGNUM (SAME ALGORITHM)
SKIPA B,A
AHSH1: HRRZ B,(B)
JUMPE B,AHSH2
HLRZ C,(B)
XOR T,(C)
JRST AHSH1
AHSH2: LSH T,-1 ;FOR ATOMS, THIS INSURES THAT THE HASHKEY IS POSITIVE
JRST (TT)
NILHSH: MOVE D,[<ASCII \NIL\>_-1] ;HASH NIL FASTLY
POPJ P,
SXHSH0: JUMPE A,NILHSH ;RETURNS S-EXPR'S HASHKEY IN D
HRRZ TT,A
LSH TT,-SEGLOG
MOVE TT,ST(TT)
2DIF JRST @(TT),SXHSH9,QLIST .SEE STDISP
SXHSLS: HRRZ B,(A)
PUSH P,B
HLRZ A,(A)
PUSHJ P,SXHSH0
SKIPE OLDSXHASHP
ROT D,-1
SKIPN OLDSXHASHP
ROT D,11.
PUSH FXP,D
POP P,A
PUSHJ P,SXHSH0
POP FXP,T
SKIPN OLDSXHASHP
ROT D,7
ADD D,T
POPJ P,
SXHSH8: MOVM D,(A) ;FLONUM
POPJ P,
SXHSH7: MOVE D,(A) ;FIXNUM
POPJ P,
IFN BIGNUM,[
SXHSH4: HRRZ A,(A) ;BIGNUM
JSP TT,BNHSH
MOVE D,T
POPJ P,
] ;END OF IFN BIGNUM
SYMHSH:
SXHSH5: HLRZ T,(A) ;SYMBOL
HRRZ A,1(T)
JSP TT,ATMHSH
SKIPA D,T
SXHSH6: MOVEI D,(A)
POPJ P, ;RANDOM, ARRAY
SXHSH9: SXHSLS ;LIST
SXHSH7 ;FIXNUM
SXHSH8 ;FLONUM
DB$ SXHSD1 ;DOUBLE
CX$ SXHSC1 ;COMPLEX
DX$ SXHSZ1 ;DUPLEX
BG$ SXHSH4 ;BIGNUM
SXHSH5 ;SYMBOL
HN$ REPEAT HNKLOG+1, SXHS1A ;HUNKS
SXHSH6 ;RANDOM
SXHSH6 ;ARRAY
IFN .-SXHSH9-NTYPES, WARN [WRONG LENGTH TABLE]
IFN DBFLAG,[
SXHSD1: MOVE D,1(A)
KA ASH D,10
] ;END OF IFN DBFLAG
IFN DBFLAG+CXFLAG,[
SXHSD2: ADD D,(A)
POPJ P,
] ;END OF IFN DBFLAG+CXFLAG
IFN CXFLAG,[
SXHSC1: MOVS D,1(A)
JRST SXHSD2
] ;END OF IFN CXFLAG
IFN DXFLAG,[
SXHSZ1: MOVE D,3(A)
KA ASH D,10
SUB D,2(A)
KA MOVE T,1(A)
KA ASH T,10
KA XOR D,T
KIKL XOR D,1(A)
JRST SXHSD2
] ;END OF IFN DXFLAG
IFN HNKLOG,[
SXHS1A: PUSH P,A
PUSHJ P,USRHPP ;Is this a USERHUNK?
JUMPE T,SXHS1
PUSHJ P,[PUSH P,A
PUSH P,[QSXHASH]
MOVNI T,2
XCT SENDI]
SXHHS0: MOVE D,(A)
JRST POPAJ
SXHS1: MOVSI T,-1
2DIF [LSH T,(TT)]0,QHUNK0
HRRI T,(A)
PUSH P,T
PUSH FXP,R70
SXHS1B: HLRZ A,(T)
PUSHJ P,SXHSH0
ROT D,1
ADDM D,(FXP)
MOVE T,(P)
HRRZ A,(T)
PUSHJ P,SXHSH0
ADD D,(FXP)
ROT D,2
MOVEM D,(FXP)
MOVE T,(P)
AOBJP T,SXHS1F
MOVEM T,(P)
JRST SXHS1B
SXHS1F: SUB P,R70+2
JRST POPXDJ
] ;END OF IFN HNKLOG
SUBTTL MAPPING FUNCTIONS
;;; MAPATOMS FUNCTION
;;; (MAPATOMS FN) CALLS FN REPEATEDLY, FEEDING IT SUCCESSIVE
;;; ATOMS FROM THE CURRENT OBARRAY. OPTIONAL SECOND ARG
;;; SPECIFIES OBARRAY (MUST BE A SAR!). RETURNS NIL.
MAPATOMS:
MOVEI D,QMAPATOMS
AOJG T,S1WNALOSE
AOJL T,S2WNALOSE
SKIPE T ;SECOND ARG DEFAULTS TO
PUSH P,VOBARRAY ; CURRENT OBARRAY
MOVEI TT,(CALL 1,)
HRLM TT,-1(P)
PUSH P,R70
PUSH FXP,[OBTSIZ] ;NUMBER OF BUCKETS
MAPAT1: SOSGE TT,(FXP) ;TT GETS BUCKET NUMBER
JRST MAPAT9
HRRZ AR1,-1(P)
ROT TT,-1
HLRZ A,@TTSAR(AR1) ;FETCH BUCKET
SKIPGE TT
HRRZ A,@TTSAR(AR1)
MOVEM A,(P) ;SAVE BUCKET
MAPAT2: SKIPN B,(P) ;MAPCAR DOWN BUCKET
JRST MAPAT1
HLRZ A,(B)
HRRZ B,(B)
MOVEM B,(P)
XCT -2(P) ;CALL SUPPLIED FUNCTION
JRST MAPAT2
MAPAT9: SUB FXP,R70+1 ;EXIT, RETURNING NIL
SUB P,R70+3
JRST FALSE
;;; PDL STRUCTURE FOR MAP SERIES
;;; ,,RETURN ;LEFT HALF MAY HAVE BAKTRACE INFO
;;; ,,EVENTUAL VALUE ;LEFT HALF HAS LAST OF VALUE LIST
;;; LIST1 ;SECOND ARG
;;; LIST2 ;THIRD ARG
;;; LIST3 ;FOURTH ARG
;;; ...
;;; LISTN ;LAST ARG
;;; -N,,<ADDRESS OF LIST1 ON STACK>
;;; CODE,,MODE ;CODE TELLS WHAT KIND OF MAP, MODE TELLS HOW TO CALL FN
;;; ; (MODE IS ADDRESS OF PLACE WHICH SETS UP ARGS FOR FN)
;;; MAPL6 ;OR MAYBE MAPL3 - THIS IS WHERE FN CALL RETURNS TO
;;; JCALL K,FN ;FN=FIRST ARG - K=1,2,3,4,5, OR 16
;;; ;UUO HANDLER MAY CLOBBER THIS WITH A JRST
;;; ;IF NEVER GOING TO BE XCT'ED, JCALL NEED NOT BE THERE
MAPLIST: JSP TT,MAPL0 ;CODE 0
MAPCAR: JSP TT,MAPL0 ;CODE 1
$MAP: JSP TT,MAPL0 ;CODE 2
MAPC: JSP TT,MAPL0 ;CODE 3
MAPCON: JSP TT,MAPL0 ;CODE 4
$MAPCAN: JSP TT,MAPL0 ;CODE 5
MAPL0: AOJGE T,MAPWNA ;LOSE IF ONLY ONE ARG
MOVE D,T
ADDI D,1(P) ;D HAS ADDRESS OF LIST1 ON STACK
HRLI D,(T)
PUSH P,D
2DIF [MOVSI TT,(TT)]-1,MAPLIST
PUSH P,TT ;SAVE CODE - FIGURE OUT MODE LATER
TLNE TT,2 ;SKIP IF WE'LL BE SAVING UP RESULTS
SKIPA A,(D) ;ELSE WE'LL JUST RETURN FIRST LIST AS VALUE
MOVSI A,-1(D)
EXCH A,-1(D) ;INIT EVENTUAL VALUE SLOT - A NOW HAS FIRST ARG (FN)
JSP T,SPATOM
JRST MAPL5 ;FOOEY, IT'S NOT A SYMBOL
HRRZ C,(A)
MAPL1: JUMPE C,MAPL5 ;FOOEY, IT'S A SYMBOL WITH NO FUNCTION PROPERTY
HLRZ B,(C)
HRRZ C,(C)
HRRZ C,(C)
CAIL B,QARRAY ;REMEMBER, SYMBOLS DENOTING FUNCTION PROPS
CAILE B,QFEXPR ; ARE CONSECUTIVE IN SYMBOL SPACE
JRST MAPL1
CAIE B,QARRAY
CAIN B,QSUBR
JRST MAPL5A ;GO FIGURE OUT JCALL FOR A SUBR OR ARRAY
CAIE B,QLSUBR
JRST MAPL5 ;FOOEY, IT'S SOMETHING WE CAN'T LINK TO WELL
PUSH P,CMAPL3
HRLI A,(JCALL 16,)
MOVEI B,MAPL23
MAPL1B: HRRM B,-1(P) ;B HAS MODE - SAVE IT
PUSH P,A ;SAVE FN (MAYBE WITH JCALL K, IN LEFT HALF)
JRST MAPL2
MAPL3: MOVE D,(P) ;GET FUNCTION CALL FROM STACK
TLNE D,700000 ;SKIP IF IT DIDN'T GET CLOBBERED
JRST MAPL3A
MOVEI D,MAPL24 ;OH, WELL! MIGHT AS WELL USE MODE
HRRM D,-2(P) ; FOR UNCLOBBERABLE FNS
CMAPL6:
MAPL3A: MOVEI D,MAPL6
MOVEM D,-1(P) ;WE ONLY NEED TO DO A MAPL3 CHECK ONCE
MAPL6: MOVE D,-3(P) ;D POINTS TO LIST1 ON STACK
HLRZ C,-1(D) ;C GETS POINTER TO LAST OF VALUE
JUMPE C,MAPL7 ;THIS IS REALLY A MAP OR MAPC
HLLZ B,-2(P) ;GET CODE IN LEFT HALF OF B
TLNE B,4
JRST MAPL8 ;MAPCAN OR MAPCON
PUSHJ P,CONS ;MAPCAR OR MAPLIST - NOTE THAT B IS NIL
HRRM A,(C) ;CLOBBER INTO END OF LIST
MAPL6A: HRLM A,-1(D) ;SAVE NEW LAST POINTER
MAPL7: MOVE TT,(D)
MAPL7A: HRRZ A,(TT) ;TAKE CDR OF ALL LISTS
MOVEM A,(D)
SKIPL TT,1(D)
AOJA D,MAPL7A
MOVE D,TT ;NOW D POINTS TO LIST1 ON STACK AGAIN
MAPL2: MOVE B,-2(P)
MOVE C,P ;SAVE C FOR A QUICK GETAWAY
PUSH P,-1(P) ;WHERE CALL TO FN SHOULD RETURN
MAPL21: SKIPG A,(D) ;D POINTS TO VECTOR OF LISTS
JRST MAPL22 ;REMEMBER, <-N,,XXX> IS JUST AFTER <LISTN>
MOVEI TT,(A)
LSH TT,-SEGLOG
SKIPL ST(TT) ;END-OF-LIST TEST
JRST MAPL40
TLNE B,1 ;SKIP UNLESS THIS IS A "CAR" KIND OF MAP
HLRZ A,(A)
PUSH P,A ;PUSH ARG
AOJA D,MAPL21 ;IF NOT END, GO CHECK OUT NEXT LIST
MAPL40: JUMPE A,MAPL4
LER3 [SIXBIT \NON-NULL TERMINATION OF LIST - MAP!\]
MAPL4: MOVE P,C ;THIS POPS OFF FASTLY ANY UNNEEDED STUFF
HLRZ T,-3(P) ;GET -N IN T
SUBI T,4
HRLI T,-1(T)
ADD P,T ;FASTLY POP OFF FN, MODE, ALL LISTS, ETC.
POP P,A ;FINAL VALUE GOES IN A
TLZ A,-1 ;ZERO ANY LEFT HALF GARBAGE
CMAPL3: POPJ P,MAPL3 ;HOORAY!
MAPL22: JUMPE A,MAPL4 ;NIL IS NORMAL END-OF-LIST
SETZB A,B ;MAY HAVE GARBAGE IN LEFT HALVES
HLRE T,(D) ;T GETS -N IN CASE OF LSUBR CALL
MOVE TT,1(D) ;GET MODE (D POINTS TO <-N,,XXX> ON STACK)
JSP R,(TT) ;FOR SUBRS, GOES TO PDLA2-N
MAPL23: XCT 3(D) ;GO HERE FOR LSUBRS
MAPL24: MOVEM T,UUTSV ;GO HERE FOR UNCLOBBERABLE CALL
MOVE T,3(D) ;SAVE SOME OF THE UUOH TROUBLE BY
HRLI T,(JCALLF 16,) ; ENTERING THE UUO MESS MORE DIRECTLY
MOVEM T,40
TLZ T,-1
MOVEI R,1 ;R=1 MEANS LSUBR CALL
SETZM UUOH
JRST UUOH0A
MAPL5: PUSH P,CMAPL6 ;SET UP FOR UNCLOBBERABLE FN CALL
MOVEI B,MAPL24
JRST MAPL1B
MAPL5A: HLRE T,-1(P)
CAMGE T,XC-5 ;CHECK NUMBER OF ARGS FOR FN
JRST MAPL5 ;FOOEY, TOO MANY ARGS FOR SUBR CALL
PUSH P,CMAPL3
MOVM TT,T
LSH TT,5
TLO A,(JCALL)(TT) ;MAKE UP JCALL OF RIGHT # OF ARGS
MOVEI B,PDLA2(T) ;MODE = PDLA2-<# OF ARGS>
JRST MAPL1B
MAPL8: JUMPE A,MAPL7 ;NCONC'ING NIL DOES VERY LITTLE
HRRM A,(C) ;CLOBBER INTO LAST OF PREVIOUS THING
SKIPE V.RSET
JRST MAPL8A
MOVE T,A
MAPL8B: HRRZ TT,(T) ;AN OPEN-CODING OF THE SUPER-FAST "LAST"
JUMPE TT,MAPL8C
HRRZ T,(TT)
JUMPN T,MAPL8B
SKIPA A,TT
MAPL8C: MOVEI A,(T)
JRST MAPL6A
MAPL8A: MOVE T,D
PUSHJ P,LAST ;FIND LAST OF THIS NEW FROB
MOVE D,T
JRST MAPL6A
.MAP: JSP TT,.MAP1 ;MAPCAN
JSP TT,.MAP1 ;MAPCON
JSP TT,.MAP1 ;MAPC
JSP TT,.MAP1 ;MAP
JSP TT,.MAP1 ;MAPCAR
JSP TT,.MAP1 ;MAPLIST
.MAP1: JUMPE A,CPOPJ
TLNE A,-1 ;RIDICULOUS CHECK FOR HORRIBLE
.VALUE ; COMPILER LOSSES
PUSH P,B ;LIST IN A, FUNCTION IN B,
PUSH P,A ;NUMBER IN TT IS INDEX
MOVNI T,2
10$ SUBI TT,.MAP+A ;LOSING D10!!!
10$ MOVNS TT ;NO NEGATIVE RELOC ALLOWED!
.ELSE MOVNI TT,-.MAP-A(TT)
JRST $MAPCAN(TT)
SET: JSP D,SETCK ;SUBR 2
EXCH B,A ;FORTUNATELY, NOT USED BY COMPILED CODE
JSP T,PDLNMK
EXCH B,A
EXCH B,AR1
JSP T,.SET1
EXCH B,AR1
POPJ P,
SETCK: JSP T,SPATOM
JSP T,PNGE1
JRST (D)
SUBTTL VARIOUS BREAK ROUTINES
$BREAK: JUMPE A,CPOPJ ;*BREAK - SUBR 2
$BRK0: MOVEI A,(B) ;A = BREAKP, B = BREAKID
HRRZ B,V.
HRRZ AR1,VIPLUS
HRRZ AR2A,VIDIFF
JSP T,SPECBIND ;DO *NOT* BIND ^R
TAPRED ;^Q
TTYOFF ;^W
VEVALHOOK ;EVALHOOK
0 B,V. ;*
0 AR1,VIPLUS ;+
0 AR2A,VIDIFF ;-
MOVEI B,$DEVICE
MOVEI C,IUNTYI ;INTERNAL UNTYI'ER
MOVEI AR2A,TRUTH
JSP T,SPECBIND
0 B,TYIMAN
0 C,UNTYIMAN
0 AR2A,V%TERPRI
STRT 17,[SIXBIT \^M;BKPT !\]
HRRZ AR1,VMSGFILES
TLO AR1,200000
PUSHJ P,$PRINC
STRT 17,STRTCR
MOVE A,VIDIFFERENCE
MOVEM A,VIPLUS
MOVEI D,BRLP ;FUNCTION TO EXECUTE
PUSHJ P,BRGEN ;CATCH AND ERRSET AROUND A READ-EVAL-PRINT LOOP
JSP F,LINMDP
PUSHJ P,ITERPRI
PUSHJ P,UNBIND
JRST UNBIND
CB: SKIPN V.RSET ;CALL BREAK - *RSET ERROR
POPJ P,
SKIPA B,[Q.R.TP]
CN.BB: MOVEI B,QCN.B ;CONTROL-B BREAK
PUSHJ P,IOGBND
JRST BKCOM2
UDFB: MOVEI B,QUDF ;UNDEFINED FUNCTION BREAK
JRST BKCOM
UBVB: MOVEI B,QUBV ;UNBOUND VARIABLE BREAK
JRST BKCOM
WTAB: MOVEI B,QWTA ;WRONG TYPE OF ARGUMENT BREAK
JRST BKCOM
UGTB: MOVEI B,QUGT ;UNSEEN GO TAG BREAK
JRST BKCOM
WNAB: MOVEI B,QWNA ;WRONG # ARGS BREAK
JRST BKCOM
GCLB: MOVEI B,QGCL ;FAILED TO GARBAGE-COLLECT ENOUGH SPACE BREAK
JRST BKCOM
PDLB: MOVEI B,QPDL ;PDL OVERFLOW BREAK
JRST BKCOM
GCOB: MOVEI B,QGCO ;GC OVERFLOW BREAK
JRST BKCOM
IOLB: MOVEI B,QIOL ;I/O LOSSAGE BREAK
JRST BKCOM
FACB: MOVEI B,QFAC ;FAILED ACTION REQUEST BREAK
BKCOM:
PUSHJ P,IOGBND
SOVE A B
PUSH P,CBKCM0
PUSH P,R70
PUSH P,VMSGFILES
MOVNI T,2
JRST ERRPRINT
BKCOM0:
JSP R,RSTR2
BKCOM2: MOVE AR2A,VE.B.E ;ERROR-BREAK-ENVIRONMENT
SKOTT AR2A,LS
JRST BKCOM3
HRRZ AR1,(AR2A) ;(OBARRAY . READTABLE)
HLRZ AR2A,(AR2A)
SKOTT AR1,SA
JRST BKCOM3
SKOTT AR2A,SA
JRST BKCOM3
BKCOM4: JSP T,SPECBIND
0 A,VARGS ;SPECIAL VALUE CELL OF ARGS
0 AR1,VREADTABLE
0 AR2A,VOBARRAY
CBKCM0: SETZ A,BKCOM0
PUSHJ P,NOINTERRUPT
MOVEI A,TRUTH
PUSHJ P,$BREAK
BKCOM1: PUSHJ P,UNBIND
JRST UNBIND
BKCOM3: PUSH P,[BKCOM2]
PUSH P,A
PUSH P,CPOPAJ
MOVEI A,IGSBV
EXCH A,VE.B.E
FAC [LOSING VALUE FOR ERROR-BREAK-ENVIRONMENT!]
SUBTTL INTERN FUNCTION AND RELATED ROUTINES
INTERN: PUSH P,A ;ONLY INIT ENTERS INTERN AT INTRN0
INTRN3: PUSHJ P,PNGET ;MUST SAVE F - SEE FASLOAD
SETOM LPNF
INTRN1: SETZM RINF
JSP TT,ATMHSH ;LEAVES ATOM'S HASHKEY IN T
MOVEI AR2A,(A)
HLRZ C,(A)
INTRN: TLZ T,400000
IDIVI T,OBTSIZ
HRLM TT,(P)
INTRN4: LOCKI ;SO THAT NO INTERRUPT SNEAKS SOMETHING ON THE
SKIPN D,VOBARRAY ; OBLIST JUST AFTER WE DECIDE IT ISNT THERE
JRST INTNCO
MOVEI C,(D)
LSH C,-SEGLOG
MOVE C,ST(C)
TLNN C,SA
JRST INTNCO
MOVE T,ASAR(D)
TLNN T,AS<OBA>
JRST INTNCO
ROT TT,-1 ;GET BUCKET
JUMPL TT,.+3
HLRZ A,@TTSAR(D)
SKIPA
HRRZ A,@TTSAR(D)
PUSH FXP,TT
JUMPE A,MAKA0
MOVEI C,A
MAKF: MOVE AR1,C
HRRZ C,(C)
JUMPE C,MAKA
HLRZ AR1,(C)
SKIPN AR1
TROA AR1,$$$NIL ;BEWARE THE SKIP!
MAKF1: HLRZ AR1,(AR1)
HRRZ AR1,1(AR1)
SKIPN T,RINF ;RINF HAS ZERO WHEN IN REGULAR INTERN
MOVEI T,(AR2A)
MAK2: JUMPE AR1,MAK1
JUMPE T,MAKF
HLRZ B,(AR1)
MOVE B,(B)
SKIPN RINF
JRST MAK4
CAME B,@RNTN2 ;<END OF PNAME>(T)
JRST MAKF ;COMPARE FOR RINTERN
AOJA T,MAK3
MAK4: HLRZ D,(T) ;COMPARE FOR REGULAR INTERN
CAME B,(D)
JRST MAKF
HRRZ T,(T)
MAK3: HRRZ AR1,(AR1)
JRST MAK2
MAKA3: HRRZ A,(P) ;MAKE NEW ENTRY INTO OBARRAY FROM CALL TO INTERN
MOVEI B,Q%ISM ; AS OPPOSED TO RINTERN
PUSHJ P,GET1
JUMPE A,MAKA3B
HRRZ A,(P)
MOVEI B,NIL
PUSHJ P,COPYSYMBOL
HRRM A,(P)
MAKA3B: HRRZ A,(P)
SKIPGE LPNF
JRST MAKA2
SKIPE B,V.PURE ;INTERN MAKES PURE SY2 IF *PURE=T AND NOT SYMBOL
CAIN B,QSYMBOL
JRST MAKA3A
PUSHJ P,PSYCONS
JRST MAKA2
MAKA3A: PUSHJ P,SYCONS
JRST MAKA2
MAKA0: TDZA D,D ;D=0 => BUCKET WAS EMPTY BEFORE THIS CALL
MAKA: MOVEI D,1
MOVN C,RINF ;MAKE-UP NEW ATOM
JUMPE C,MAKA3
PUSHJ P,PNGNK
MAKA2: PUSHJ P,NCONS
MOVE TT,(FXP)
JUMPE D,MAKA5
HRRM A,(AR1) ;NCONC ONTO END OF BUCKET
JRST MAKA4
MAKA5: HRRZ D,VOBARRAY
JUMPL TT,.+3
HRLM A,@TTSAR(D)
SKIPA
HRRM A,@TTSAR(D)
MAKA4: SKIPA C,A
MAK1: JUMPN T,MAKF ;ATOM FOUND ON OBLIST
HLRZ A,(C)
POP FXP,TT ;SHOULD EXIT WITH OBTBL BUCKET # IN TT
SUB P,R70+1
UNLKPOPJ
;;; COME HERE TO INTERN AN ATOM WHOSE PRINT NAME IS IN PNBUF.
RINTERN:
CAMN C,[350700,,PNBUF] ;SAVES F
JRST RINTN1
RINTN0: PUSH FXP,T
PUSH P,CPXTJ
PUSH P,A ;ENTERING INTERN AFTER THE "PUSH P A", SO MUST DO HERE
SKIPL LPNF
JRST INTRN1
ADDI C,1
HRRM C,RNTN2
2DIF [MOVEI C,(C)]0,PNBUF
MOVNM C,RINF
INTRN2: MOVEI C,PNBUF ;DUPLICATE PNAME HASHING ALGORITHM
MOVE T,PNBUF ; AS USED IN SXHASH
MOVN D,RINF
SOJLE D,.+3
XOR T,PNBUF(D)
JRST .-2
LSH T,-1
JRST INTRN
RINTN1: SKIPL LPNF
JRST RINTN0
MOVE TT,PNBUF
ROT TT,6
ADDI TT,<OBTSIZ+1>/2 ;### OBTSIZ MUST BE ODD
MOVE D,VOBARRAY
JUMPL TT,.+3
HLRZ A,@1(D)
SKIPA
HRRZ A,@1(D)
JUMPN A,CPOPJ
PUSH FXP,TT
PUSHJ P,RINTN0
POP FXP,TT
MOVE D,VOBARRAY
JUMPL TT,.+3
HRLM A,@1(D)
POPJ P,
HRRM A,@1(D)
POPJ P,
IMPLODE:
SKIPA T,CRINTERN ;SUBR 1
MAKNAM: MOVEI T,PNGNK1 ;SUBR 1
JUMPE A,MKNM4
PUSH P,T
PUSH P,RDLARG
HRRZM A,RDLARG
MOVEI T,MKNM1
PUSHJ FXP,MKNR6C
POP P,RDLARG
CRINTERN:
POPJ P,RINTERN
MKNM1: SKIPN A,RDLARG
POPJ P,
HRRZ B,(A)
MOVEM B,RDLARG
HLRZ A,(A)
MKNM2: JSP T,CHNV1
JRST POPJ1
RDL12: MOVEI T,RINTERN
MKNM4: SETZM PNBUF
JSP TT,IRDA
JRST (T) ;PNGNK1 OR RINTERN, THEN POPJ P,
;;; GET CHARACTER NUMERIC VALUE
CHNV1X: TLO T,1
CHNV1: SKOTT A,SY+FX
JRST CHNV1C
TLNN TT,SY
JRST CHNV1A
CHNV1D: HLRZ TT,(A)
HRRZ TT,1(TT)
HLRZ TT,(TT)
LDB TT,[350700,,(TT)]
JRST CHNV1B
CHNV1A: MOVE TT,(A)
TLNN T,1
CHNV1B:
SA% TDNN TT,[-200]
SA$ TDNN TT,[-1000]
JRST (T)
CHNV1C: WTA [NOT ASCII CHARACTER!]
JRST CHNV1
SUBTTL DEFPROP AND DEFUN
;;; THE BASIC IDEA OF DEFPROP IS:
;;; (DEFUN DEFPROP FEXPR (X)
;;; (DO () ((NULL (REMPROP (CAR X) (CADDR X)))))
;;; (PUTPROP (CAR X) (CADR X) (CADDR X)))
;;; THAT IS, REMOVE *ALL* OCCURRENCES OF THE PROPERTY BEFORE
;;; PUTTING ON THE NEW VALUE.
DEFPROP: ;FEXPR
REPEAT 2, PUSH P,A
JSP T,DFPR2
JSP T,DFPR1
JRST DFPER
HRRZ TT,(C)
JUMPN TT,DFPER
HLRZ A,(A)
HLRZ AR1,(B)
HLRZ B,(C)
MOVEI C,(B)
;SYMBOL IN A; PROPERTY NAME IN B *AND* C; PROPERTY VALUE IN AR1.
DEF1: MOVEI AR2A,(A) ;DEFUN COMES IN HERE
DEF1B: PUSHJ P,REMPROP ;REMPROP SAVES C, AR1, AR2A
MOVEI B,(AR1)
JUMPN A,DEF1B ;REMOVE ALL OCCURRENCES OF THE PROPERTY
MOVEI A,(AR2A)
PUSHJ P,PUTPROP
DEF9: POP P,A ;PUT NEW VALUE FOR PROPERTY
POPI P,1
JRST $CAR
DFPR2: HLRZ B,(A) ;SOME HAIRY CHECKS FOR DEFPROP AND DEFUN
SKOTT B,SY ;SKIPS ON *FAILURE* TO GET A VALID SYMBOL
JUMPN B,1(T)
JRST (T)
DFPR1: JUMPE A,(T) ;MORE HAIRY CHECKS FOR DEFPROP AND DEFUN
HRRZ B,(A) ;SKIPS ON *SUCCESS*
JUMPE B,(T) ;LEAVES STUFF SPREAD OUT IN A, B, C
HRRZ C,(B)
JUMPE C,(T)
JRST 1(T)
;;; (DEFUN <SPEC> <FLAG> <ARGS> . <BODY>) DEFINES A FUNCTION.
;;; <FLAG> MAY BE OMITTED, OR MAY BE "EXPR", "FEXPR", OR "MACRO".
;;; <SPEC> MAY BE A SYMBOL (THE NAME OF THE FUNCTION), OR A LIST OF
;;; TWO TO FOUR SYMBOLS (IN WHICH CASE THE FLAG "MACRO" IS ILLEGAL).
;;; <ARGS> IS A NON-NIL SYMBOL OR A LIST OF SYMBOLS; THE FORMER INDICATES
;;; AN LEXPR (INCOMPATIBLE WITH THE "MACRO" AND "FEXPR" FLAGS).
;;; OTHER FORMATS FOR <ARGS>, INCLUDING APPEARANCE OF & KEYWORDS,
;;; CAUSES THE MACRO "DEFUN&" TO BE RUN INSTEAD.
;;;
;;; IF THE VALUE OF THE SWITCH DEFUN IS T, THEN THE EXPR-HASH HACK
;;; IS ENABLED. IN THIS CASE, DEFUN AVOIDS MAKING THE INTERPRETIVE
;;; DEFINITION IF HASHING THE DEFINITION INDICATES THAT IT IS
;;; THE SAME AS THE CURRENT, PRESUMABLY COMPILED, DEFINITION.
;;; THE VARIOUS CASES ARE:
;;; FORM OF <SPEC>:
;;; FOO (FOO BAR) (FOO BAR BAZ) (FOO BAR BAZ QUUX)
;;; EXPR-HASH PROPERTY IS ON THE ATOM:
;;; FOO (GET 'FOO 'BAR) - NONE - FOO
;;; [IF THIS IS A SYMBOL]
;;; EXPR-HASH PROPERTY INDICATOR IS:
;;; EXPR-HASH EXPR-HASH - NONE - QUUX
;;; DEFUN PUTS THE FUNCTION DEFINITION ON FOO UNDER THE PROPERTY:
;;; EXPR/FEXPR/MACRO BAR BAR BAR
;;; COMPILER PUTS THE FUNCTION DEFINITION ON FOO UNDER THE PROPERTY:
;;; SUBR/FSUBR/LSUBR BAR * BAZ BAZ
;;; * THE PROPERTY WILL BE A SYMBOL |FOO BAR| WHICH IN TURN
;;; WILL HAVE THE APPROPRIATE SUBR/FSUBR/LSUBR PROPERTY.
DEFUN:
REPEAT 2, PUSH P,A
DEF7: HRRZ A,(A)
HLRZ AR1,(A)
CAIN AR1,QEXPR
JRST DEF3
CAIE AR1,QFEXPR
CAIN AR1,QMACRO
JRST DEF3 ;(DEFUN <SPEC> <FLAG> ...)
MOVEI AR1,QEXPR ;(DEFUN <SPEC> ...); <FLAG> DEFAULTS TO EXPR
MOVE A,(P)
;<FLAG> IS IN AR1; THE CDR OF A IS (<ARGS> ...); THE CAR OF (P) IS <SPEC>.
DEF3: JSP T,DFPR1 ;MAKE SURE WE HAVE AT LEAST TWO THINGS
JRST DEFNER
HLRZ TT,(B)
SKOTT TT,LS
JRST DEF3L
HLRZ AR2A,(B) ;MAYBE HAS & KEY WORDS?
DEF3B: HLRZ T,(AR2A)
JUMPE T,DEF3X ;NIL doesn't require DEFUN& !!
SKOTT T,SY
JRST DEF4 ;PATTERN MATCHINGS REQUIRE DEFUN&
CAIL T,Q%OPTIONAL ;KEYWORDS REQUIRE DEFUN&
CAILE T,Q%RSTV ;&OPTIONAL, &REST, &AUX, &RESTV, &RESTL
CAIA
JRST DEF4
DEF3X: HRRZ AR2A,(AR2A)
JUMPN AR2A,DEF3B
DEF3L: MOVEI A,QLAMBDA ;CREATE AN APPROPRIATE LAMBDA-EXPRESSION
PUSHJ P,CONS
MOVEI C,(A)
HRRZ A,(P) ;THE CAR OF THIS IS <SPEC>
MOVEI AR2A,QXPRHSH
JSP T,DFPR2 ;CHECK TO SEE IF ATOM (SKIPS UNLESS SYMBOL)
JRST DEF3A
MOVEM B,(P) ;SAVE THIS FUNNY LIST
CAIN AR1,QMACRO
JRST DEFNER ;FUNNY FORMAT AND MACRO FLAG DON'T MIX
HRRZ B,(B) ;PECULIAR FORMAT: (NAME EXPRNAME ...)
HLRZ AR1,(B)
JUMPE AR1,DEFNER
HRRZ B,(B)
SETO AR2A, ;FOR A 2-LIST, USE "EXPR-HASH" FOR EXPR-HASH PROPERTY,
JUMPE B,DEF3A ; BUT MUST ALSO LOOK IN A DIFFERENT PLACE
HRRZ B,(B)
JUMPE B,DEF5 ;3-LISTS DON'T USE EXPR-HASH FEATURE
HLRZ AR2A,(B) ;4-LISTS USE THE FOURTH ITEM
;EXPR-HASH PROP NAME IN AR2A, OR -1;
; DEFINITION IN C; PROPERTY NAME IN AR1; NAME IN CAR OF (P).
DEF3A: SKIPN VDEFUN ;THE VALUE OF DEFUN CONTROLS
JRST DEF5 ; THE EXPR-HASH HACK
HLRZ A,@(P)
JUMPGE AR2A,DEF6 ;JUMP UNLESS 2-LIST FORMAT
MOVEI B,(AR1) ;MUST GET VALUE OF EXISTING PROPERTY
PUSHJ P,GET1 ; AND SEARCH IT FOR THE EXPR-HASH PROPERTY
JUMPE A,DEF5 ;IF NONE, LOSE
JSP T,STENT
TLNN TT,SY ;NO EXPR-HASH IF NOT A SYMBOL
JRST DEF5
MOVEI AR2A,QXPRHSH
;A HAS THE ATOM CONTAINING THE EXPR-HASH PROPERTY, IF ANY.
;AR2A HAS AN ACTUAL EXPR-HASH PROPERTY NAME.
DEF6: MOVEI B,(AR2A)
MOVEI AR2A,(A) ;SAVE ATOM INVOLVED
PUSHJ P,GET1 ;GET EXPR-HASH PROPERTY
JUMPE A,DEF5 ;DO DEFUN IF NONE
MOVE F,(A) ;EXPR-HASH PROPERTY VALUE BETTER BE FIXNUM!
PUSHJ FXP,SAV5M1
MOVEI A,(C) ;CANONICAL LAMBDA FORM
PUSHJ P,SXHASH+1 ;NCALL 1,.FUNCTION SXHASH
PUSHJ FXP,RST5M1
CAMN TT,F
JRST DEF9 ;AHA! HASHES MATCH! FORGET IT.
MOVEI A,(AR2A) ;HASHES MATCH, SO FLUSH THE EXPR-HASH PROPERTY
PUSHJ P,REMPROP ; AND THEN PERFORM THE DEFINITION
;THE CAR OF (P) IS THE ATOM TO PUTPROP ONTO; AR1 IS THE PROPERTY NAME; C IS THE VALUE.
DEF5: HLRZ A,@(P)
EXCH C,AR1
MOVEI B,(C)
JRST DEF1 ;GO DO THE PUTPROP
DEF4: POPI P,1
POP P,B
MOVEI A,Q%DEFUN ;"DEFUN&"
PUSHJ P,CONS ;TRY AGAIN WITH (DEFUN FOO ...) REPLACED BY
JRST EV0 ; (DEFUN& FOO ...)
SUBTTL TYIPEEK FUNCTION
TYIPEEK: ;LSUBR (0 . 3) NCALLABLE
SKIPA F,CFIX1
MOVEI F,CPOPJ
MOVEI D,QTYIPEEK
CAMGE T,XC-3
JRST WNALOSE
SKIPE T ;NO ARGS <=> ONE ARG OF NIL
AOSA T ;ELSE DECREMENT ARG COUNT FOR INCALL
PUSH P,R70
MOVEI D,(P)
ADDI D,(T)
MOVEI AR2A,CPOPJ
EXCH AR2A,(D)
JSP D,XINCALL ;PROCESS ARGS 2 AND 3
SFA% QTYIPEEK ; (ALSO PUSHES F ONTO P)
SFA$ [SO.TIP,,],,QTYIPEEK
PUSH FXP,BFPRDP
MOVSI A,Q%TYI
MOVEM A,BFPRDP
MOVEI A,(AR2A) ;GET ARG 1 IN A
JSP T,GTRDTB ;GET READTABLE IN AR2A
JUMPN A,TYPK1 ;NIL => ACCEPT ANY CHAR
PUSHJ P,$PEEK
JRST TYPKX
TYPK1: CAIE A,TRUTH ;T => SEARCH FOR READER START
JRST TYPK3 ; CHARACTER (E.G. PAREN, MACRO)
TYPK1C: PUSHJ P,$$PEEK ;PEEK AT A CHAR
JUMPL TT,TYPK9A ;HIT EOF - TAKE A "SOFT" EOF, RETURN -1
MOVE T,@TTSAR(AR2A) ;PEEK SETS UP AR2A
TLC T,4040 .SEE SYNTAX
TLCE T,4040
JRST TYPK1F
PUSH P,T
PUSHJ P,@TYIMAN
POP P,T
CALLF 0,(T) ;HIT A HORRIBLE SPLICING MACRO
JSP T,GTRDTB ;Refetch the read table. User code clobbers
;AR2A, and may have SETQed READTABLE
JRST TYPK1C ;GO BACK AND TRY AGAIN
$$PEEK: HRRZ TT,TYIMAN ;CALL TYIMAN ONE EARLY TO
JRST -1(TT) ; SPECIFY PEEKING
TYPK1F: TLNE T,266217 .SEE SYNTAX ;READER START CHARS
JRST TYPKX
TYPK1H: PUSHJ P,@TYIMAN ;CHAR NOT ACCEPTABLE - GOBBLE IT
JRST TYPK1C ;NOW GO TRY AGAIN
TYPK3: JSP T,FXNV1 ;ARG MUST BE FIXNUM
JUMPL TT,TYPK3C ;ARG BETWEEN 0 AND 777 =>
CAIG TT,777 ; SCAN FOR THAT CHARACTER;
TLOA TT,400000 ; OTHERWISE IS A SYNTAX, LSH'ED
TYPK3C: LSH TT,-11 ; LEFT BY 11, TO SERVE AS MASK
PUSH FXP,TT
TYPK4: PUSHJ P,$$PEEK ;PEEK AT A CHAR
JUMPL TT,TYPK9 ;SOFT EOF - GO RETURN -1 OR WHATEVER
SKIPL D,(FXP) ;SKIP IF SPECIFIC CHARACTER
JRST TYPK6
CAIN TT,(D) ;COMPARE TO ONE WE GOT
JRST TYPKXT ;SUPER WIN
TYPK5: PUSHJ P,@TYIMAN ;NOT THE ONE - GOBBLE AND RETRY
JRST TYPK4
TYPK6: HLRZ T,@TTSAR(AR2A) .SEE SYNTAX
TDNN T,D ;CHECK SYNTAX AGAINST MASK
JRST TYPK5
TYPKXT: POP FXP,T
TYPKX: POP FXP,BFPRDP ;EXIT
POPJ P,
TYPK9: POPI FXP,2 ;FLUSH "BFPRDP" AND "T"
TYPK9A: SKIPN EOFRTN ;"SOFT" EOF. DOES NOT INVOKE
JRST M1TTPJ ; THE EOFFN, BUT WILL PICK UP
JRST EOF9 ; THE EOFVAL IF NECESSARY.
SUBTTL QUIT, VALRET, AND SUSPEND FUNCTIONS
QUIT: MOVEI D,QQUIT ;LSUBR (0 . 1)
AOJL T,S1WNALOSE
SKIPE T
TDZA A,A ;NO ARG => USE NIL
POP P,A
IT% JRST VLRT3
IFN ITS,[
CAIN A,TRUTH ;T MEANS KILL AS QUIETLY AS POSSIBLE
JRST VLRT3
MOVEI D,160000 ;VANILLA-FLAVORED KILL
CAIN A,Q$ERROR ;ERROR MEANS WE SHOULD KILL INPUT BUFFER
TRZ D,100000
MOVEI TT,(A)
LSH TT,-SEGLOG
MOVE TT,ST(TT)
TLNE TT,FX
MOVE D,(A) ;FIXNUM ARG => USE FOR .BREAK 16, ARG
JRST VLRT3A
] ;END OF IFN ITS
VALRET: JUMPE T,VLRT9 ;LSUBR (0 . 1)
JSP TT,LWNACK
LA01,,QVALRET
POP P,A
PUSHJ P,VALSTR
10% SETOM SAWSP
PUSHJ P,RETVAL ;VALRET STRING ON FXP IN APPROPRIATE MANNER
10% SETZM SAWSP
POPJ P,
;;; TAKE SYMBOL OR FIXNUM IN A, PUSH PNAME STRING OR VALUE ONTO FXP.
;;; ON TOP OF THAT, AS LAST FXP SLOT, PUSH ORIGINAL VALUE OF FXP.
VALSTR: JSP T,LATOM ;STRING A SYMBOL?
JRST VALS1
IT$ SETZM VALFIX ;FLAG THAT VALRET 'STRING' IS NOT A FIXNUM
PUSHJ P,PNGET
MOVE R,FXP
VLRT2: HLRZ B,(A)
PUSH FXP,(B)
HRRZ A,(A)
JUMPN A,VLRT2
PUSHN FXP,1 ;PUSH A ZERO WORD FOR GOOD MEASURE
PUSH FXP,R
POPJ P,
VALS1:
IFN ITS,[
SKOTT A,FX ;ALLOW A FIXNUM
JRST VALERR ;ERROR -- WTA
SETOM VALFIX ;REALLY A FIXNUM
MOVE R,FXP ;SAVE A COPY OF FXP
PUSH FXP,(A) ;PUSH THE FIXNUM
PUSH FXP,R ;THEN PUSH THE OLD FXP
POPJ P,
] ;END IFN ITS
VALERR:
IT$ WTA [- ARG TO BE VALRET'ED MUST BE A FIXNUM OR A SYMBOL!]
IT% WTA [- ARG TO BE VALRET'ED MUST BE A SYMBOL!]
JRST VALSTR
;;; ASSUME VALSTR HAS PUSHED A VALRET STRING ONTO FXP.
;;; VALRET THAT STRING IN THE APPROPRIATE MACHINE-DEPENDENT WAY,
;;; EXCEPT THAT CERTAIN "ITS" STRINGS ARE INTERPRETED IN ANY
;;; IMPLEMENTATION (AN ANACHRONISM FOR COMPATIBILITY ONLY).
;;; AFTER DOING WHATEVER, THE STRING IS FLUSHED FROM FXP.
RETVAL:
IFN ITS,[
SKIPN VALFIX ;WAS VALRET STRING REALLY A FIXNUM?
JRST RETSTR ;NO, NORMAL HANDLING
HRRZ TT,-1(FXP) ;YES, PICK UP THE FIXNUM
.BREAK 16,(TT)
MOVE FXP,(FXP) ;RESET FXP
POPJ P, ;IF CONTINUING RETURN AND GO ON
RETSTR: ] ;END IFN ITS
MOVE R,(FXP)
MOVE D,1(R)
CAME D,[ASCII \:KILL\]
CAMN D,[ASCII \:kill\]
CAIA
JRST VLRT1
MOVE D,2(R)
CAME D,[ASCII \ \]
CAMN D,[ASCII \<5C>\]
JRST VLRT3
JRST VLRT5
VLRT1: CAMN D,[ASCII \.\]
JRST VLRT3
CAME D,[ASCII \U\]
CAMN D,[ASCII \u\]
JRST VLRT9
;HERE IS THE MACHINE-DEPENDENT THING TO DO TO RET THE VAL STRING
VLRT5:
IT$ .VALUE 1(R)
IFN D10,[
SA% OUTSTR 1(R)
IFN SAIL,[
SETZ D, ;D IS ZERO FOR TWO DIFFERENT REASONS!
MOVEI TT,1(R) ;THIS PIECE OF CRAP LOOKS LIKE
HRLI TT,440700 ; SOMETHING RPG WOULD WRITE (BUT GLS DID)
ILDB T,TT
JUMPN T,.-1
MOVEI T,^M ;CRUFTY STRAY ^M MAKES PTLOAD HAPPIER
DPB T,TT
IDPB D,TT ;THEN TERMINATE WITH A NULL
HRLI R,440700
HRRI R,1(R)
PTLOAD D ;LOAD THE STRING INTO THE LINE EDITOR
] ;END OF IFN SAIL
] ;END OF IFN D10
IFN D20,[
PUSH P,A
HRRI 1,1(R)
TLO 1,440700
SKIPE TENEXP
JRST [ MOVE T,1
MOVEI 1,.PRIIN
CFIBF
ILDB 2,T
JUMPE 2,VLRT6X
STI
JRST .-3 ]
RSCAN ;stuff some chars into the RSCAN buff
JFCL
MOVEI 1,.RSINI ;move buff ptr back to origin
RSCAN
JFCL
VLRT6X: HALTF
POP P,A
] ;END OF IFN D20
MOVE FXP,(FXP)
POPJ P,
VLRT3:
IFE ITS,[
VLRT9:
10$ EXIT 1,
20$ HALTF
POPJ P,
] ;END IFE ITS
IFN ITS,[
MOVEI D,120000 ;"SILENT KILL"
VLRT3A: .LOGOUT 1, ;TRY TO LOG OUT
JSP T,SIDDTP
.VALUE
.BREAK 16,(D)
VLRT9: .LOGOUT 0, ;TRY TO LOG OUT IF NO DDT AVAILABLE
.VALUE [ASCIZ \:VK \] ;OH, WELL...
POPJ P, ;IN CASE LOSER DOES $P FROM IT
SIDDTP: .SUSET [.ROPTION,,TT]
TLNN TT,OPTBRK ;SKIP IF JOB INFERIOR TO DDT
JRST (T) ; (ACTUALLY, IF SUPERIOR HANDLES .BREAK)
JRST 1(T)
] ;END OF IFN ITS
SUSPEND: ;LSUBR (0 . 2)
JSP TT,LWNACK
LA012,,QSUSPEND
IT$ SETZM PURDEV ;ASSUME NO DUMPING
PUSH FLP,R70 ;ASSUME WE ARE RETURNING FROM A RESTART
PUSH FLP,R70 ;ALSO ASSUME FIRST ARG IS NON-NIL
JUMPE T,SUSP0
AOJE T,SUSP0C ;JUMP IF ONE ARG
POP P,A ;2ND ARG, IF ANY, IS SAVE FILE NAME FOR HISEG
; FOR ITS, IS NAME OF PDUMP FILE
IFN HISEGMENT,[
SKIPN SUSFLS
JRST SUSP0C
PUSHJ P,FIL6BT ;CONVERT FILESPEC IN A TO SIXBIT ON FXP
PUSHJ P,DMRGF ;MERGE WITH DEFAULTS
POP FXP,SGAEXT ;UNSTACK ARGS INTO PROPER SPOT
POP FXP,SGANAM
POP FXP,SGAPPN
POP FXP,SGADEV
PUSHJ P,SAVHGH ;SAVE HIGH SEGMENT
FAC [FAILED TO SAVE HIGH SEGMENT - SUSPEND!]
] ;END OF IFN HISEGMENT
IFN ITS,[
PUSHJ P,FIL6BT ;CONVERT FILESPEC IN A TO SIXBIT ON FXP
PUSHJ P,DMRGF ;MERGE WITH DEFAULTS
POP FXP,PURFN2 ;UNSTACK ARGS INTO PROPER SPOT
POP FXP,PURFN1
POP FXP,PURSNM
POP FXP,PURDEV
] ;END IFN ITS
SUSP0C: POP P,A ;POP FIRST ARGUMENT
SKIPN A ;FIRST ARG NIL?
AOSA (FLP) ;YES, NO VALRET STRING
PUSHJ P,VALSTR ;NO, PROCESS IT ONTO FXP
SKIPA
SUSP0: PUSH FXP,R70 ;ZERO WORD MEANS VALRET STRING
SETZ A,
MOVEI T,LCHNTB
SUSP11: SOJE T,SUSP12
SKIPE B,CHNTB(T)
CAMN B,V%TYI
JRST SUSP11
CAMN B,V%TYO
JRST SUSP11
MOVE TT,TTSAR(B) ;IF FILE IS CLOSED THEN IGNORE IT
TLNN TT,TTS.CL
PUSHJ P,XCONS
JRST SUSP11
SUSP12: JUMPN A,SUSPE
HRRZ A,V%TYI ;CLOSE THE TTYS LAST, SO THEY WONT CAUSE
MOVE TT,TTSAR(A) ;SPURIOUS "CANT SUSPEND -I/O IN PROGRESS"
TLNN TT,TTS.CL
PUSHJ P,$CLOSE
HRRZ A,V%TYO
MOVE TT,TTSAR(A)
TLNN TT,TTS.CL
PUSHJ P,$CLOSE
SUSP1: HRROS NOQUIT
MOVEM NIL,GCNASV+1
MOVE T,[FREEAC,,GCNASV+2]
BLT T,GCNASV+2+17-FREEAC
SETOM NOPFLS
IFN ITS*USELESS,[
MOVE T,IMASK
TRNN T,%PIMAR
JRST SUSP14
.SUSET [.RMARA,,SAVMAR]
.SUSET [.SMARA,,R70]
SUSP14:
] ;END OF IFN ITS*USELESS
IFN ITS\D20,[
IT$ SETOM SAWSP ;ITS ALWAYS WANTS TO DO A PMAP FROM FILE
MOVEI T,FLSSTARTUP
EXCH T,LISPSW
MOVEM T,GCNASV
20$ HRRZ T,ENTVEC ;SET THE "CONTINUE" ADDRESS TO START-UP
20$ HRRM T,ENTVEC+1
SKIPE SUSFLS ;IF FLUSHING PURE PAGES PROCESS VALRET THEN
JRST FLSLSP
FLSNOT: MOVEI T,SUSP3 ;FROM HERE ON IN START AT SUSP3 DIRECTLY
MOVEM T,LISPSW
PUSHJ P,PDUMPL ;PURE DUMP LISP IF APPROPRIATE
SKIPE (FLP) ;NIL JCL?
JRST SUSCON ;YES, CONTINUE ON AND RETURN T
SKIPN 1,(FXP) ;ZERO WORD MEANS NO VALRET STRING
JRST SUSP24
IT$ PUSHJ P,RETVAL
20$ HRROI 1,1(1)
JRST SUSP25
] ;END OF IFN ITS\D20
IFN D10,[
HRRZ T,.JBSA"
HRL T,.JBREN"
MOVEM T,GCNASV
MOVE T,.JBREL ;GET HIGHEST ADR WE NEED TO SAVE
HRLM T,.JBSA ;AND STORE IN CORRECT PLACES SO MONITOR KNOWS
MOVEM T,.JBFF
MOVEI T,SUSP3
HS% HRRM T,.JBSA
HS$ HRRM T,RETHGH
SKIPE (FLP) ;NIL JCL?
JRST SUSCON ;YES, CONTINUE AND RETURN T
SKIPN (FXP)
JRST SUSP24
SA$ PUSHJ P,RETVAL ;PTLOAD VALRET STRING FOR SAIL
SA$ SETZM VEJOBNUM
JRST SUSP25
] ;END OF IFN D10
SUSP24: MOVE T,FXP
POPI T,1
MOVEM T,(FXP)
10$ MOVEI TT,
20$ HRROI 1,FLSPA1
IT$ MOVEI TT,FLSPA1
SUSP25:
IFN ITS,[
.VALUE (TT) ;PRINT SUSPENSION MESSAGE
JRST SUSCON
] ;END OF IFN ITS
IFN D20,[
PSOUT
HALTF
] ;END OF IFN D20
IFN D10,[
OUTSTR (TT)
HS$ JRST KILHGH
IFE HISEGMENT,[
IFN SAIL,[
MOVEI A,FAKDDT ;FOO, HOW MANY WAYS CAN SAIL LOSE?
SKIPN .JBDDT ; JOBDDT MUST BE NON-ZERO TO SAVE!
SETDDT A, ; ELSE MAY FAIL TO SAVE ENTIRE LOSEG
] ;END IFN SAIL
EXIT 1,
] ;END IFE HISEGMENT
] ;END OF IFN D10
SUBTTL HIGH SEGMENT SAVE ROUTINE
IFN D10,[
;;; THE RELEVANT FILE NAMES ARE IN SGADEV, SGAPPN, SGAEXT.
;;; THE MAIN FILE NAME IS PASSED THROUGH T, AND STORED INTO
;;; SGANAM ON SUCCESS. SKIP RETURN ON SUCCESS.
IFN HISEGMENT,[
SAVHGH: LOCKI ;LOCK OUT INTERRUPTS AROUND USE OF TEMP CHANNEL
MOVE F,SGANAM
IFN SAIL,[
SKIPL .JBHRL ;IS HISEG CURRENTLY WRITE-PROTECTED?
JRST SAPWIN ;NO, MUST PREVIOUSLY HAVE UNPURIFIED IT
SKIPN PSGNAM
JRST FASLUH
MOVEI T,.IODMP
MOVE TT,PSGDEV
SETZ D,
OPEN TMPC,T ;OPEN UP .SHR FILE DEVICE IN DUMP MODE
JRST FASLUH
MOVE T,PSGNAM
MOVE TT,PSGEXT
SETZ D,
MOVE R,PSGPPN
LOOKUP TMPC,T
JRST FASLUR
MOVS T,R
MOVNS T ;T GETS LENGTH OF .SHR FILE
ADDI T,HSGORG-1
PUSHJ P,LDRIHS ;GO READ IN HIGH SEGMENT (FROM WITHIN LOSEG!)
RELEASE TMPC, ;FLUSH TEMP CHANNEL
MOVE T,D10NAM ;USE D10NAM AS HISEG NAME TO FOIL SHARING
LSH T,-6 ;AS LONG AS WE'RE BEING RANDOM...
SETNM2 T,
JFCL
MOVE F,SGANAM ;RESTORE MAIN FILE NAME
SAPWIN:
] ;END OF IFN SAIL
SETZM SGANAM
MOVE R,SGADEV
IFN SAIL,[
;;;SAVE VALIDATION WORDS IN HISEG, HOPE THAT HISEG WRITEABLE
MOVEM R,PSGDEV
MOVE D,SGAEXT
MOVEM D,PSGEXT
MOVE D,SGAPPN
MOVEM D,PSGPPN
] ;END OF IFN SAIL
MOVEI D,.IODMP
MOVE T,F ;SGANAM WAS SAVED IN F
SETZ F,
OPEN TMPC,D
UNLKPOPJ
MOVE TT,SGAEXT
SETZ D,
MOVE R,SGAPPN
SA$ MOVEM T,PSGNAM
ENTER TMPC,T
UNLKPOPJ
MOVEI TT,HSGORG-1 ;MAKE UP IOWD
SUB TT,.JBHRL
MOVSS TT
HRRI TT,HSGORG-1
SETZ D,
OUT TMPC,TT ;OUTPUT THE HISEG
CAIA
UNLKPOPJ
CLOSE TMPC, ;FLUSH TEMP CHANNEL
RELEASE TMPC,
MOVEM T,SGANAM ;WE CAREFULLY DO NOT STORE SGANAM UNTIL
UNLOCKI ; WE HAVE CLEARLY WON (MORE OR LESS)
JRST POPJ1
] ;END IFN HISEGMENT
] ;END OF IFN D10
SUBTTL ARGS FUNCTION
ARGS: JSP TT,LWNACK ;LSUBR (1 . 2) - USES A,B,C,T,TT,D,R,F
LA12,,QARGS
JSP R,PDLA2(T) ;SPREAD ARGS
ARGS1: SKOTT A,SY
JRST ARGS0 ;FIRST ARG MUST BE SYMBOL
HLRZ F,(A)
ARGS1A: AOJL T,ARGS3 ;TWO ARGS
HLRZ R,1(F) ;JUST WANT TO GET PRESENT ARGS PROP
ARGSCU: JUMPE R,FALSE ;ARGS CONS-UP
IDIVI R,1000
SKIPN B,F
JRST ARGSC1
MOVEI TT,-1(F)
JSP T,FIX1A
MOVEI B,(A)
ARGSC1: SKIPN A,R
JRST CONS
MOVEI TT,(R)
CAIE TT,777
SUBI TT,1
JSP T,FIX1A
JRST CONS
ARGS3: JUMPE A,CPOPJ
JUMPN B,ARGS5
HLRZ R,1(F) ;JUST WANT TO FLUSH ARGS PROP
JUMPE R,FALSE
SETZ R,
PUSH P,A
JSP D,ARGCLB
SUB P,R70+1
JRST TRUE
ARGS5: PUSH P,A
SETZB TT,R
HLRZ C,(B) ;MUMBLE MUMBLE - MUST FIGURE
JUMPE C,ARGS6 ; OUT WHATEVER WE WERE HANDED
JSP T,FXNV3
CAIE R,777
ADDI R,1
LSH R,11
ARGS6: HRRZ A,(B)
JSP T,FXNV1
CAIE TT,777
ADDI TT,1
ADDI R,(TT)
HLRZ TT,1(F) ;LOOK AT ARGS PROP ALREADY THERE
CAIN TT,(R) ;IF ALREADY WHAT WE WANT, JUST EXIT,
JRST POPAJ ; THEREBY AVOIDING A PURE PAGE TRAP
MOVEI D,POPAJ ;FAKE OUT A JSP D,
ARGCLB: MOVEI B,(F) ;CLOBBER IN AN ARGS PROPERTY
ARGCL3:
PURTRAP ARGCL7,B, HRLM R,1(B) ;MAY HAVE TO FUSS ABOUT PURE PAGE TRAP
JRST (D)
ARGS0: MOVEI F,$$$NIL
JUMPE A,ARGS1A
WTA [ NON-SYMBOL - ARGS!]
JRST ARGS1
SUBTTL EVALFRAME FUNCTION, GTPDLP, AND FRETURN
EVALFRAME:
SKIPA R,[GTPDLP] ;THIS ENTRY CAUSES INTERPRETATION OF ARG AS PDLPOINTER
FRM2A: MOVEI R,GTPDL2 ;THIS ENTRY, TO ALLOW CONTINUING FROM WHERE D CURRENTLY IS
JSP R,(R)
$EVALFRAME ;GET EVALFRAME OR APPLYFRAME JUST PRIOR TO
$APPLYFRAME ; POINT ON PDL MARKED BY ARG
JRST FALSE
FRM3: SUB D,R70+1 ;DEFINE A FRAME POINTER TO BE JUST BELOW THE EVALFRAME MARKER
HRRZ TT,(D)
JUMPN F,FRM3A ;F IS INDEX OF WHICH KIND OF FRAME
MOVEI T,(TT)
LSH T,-SEGLOG
SKIPL ST(T)
JRST FRM4A
HLRZ TT,(TT)
FRM3A: CAIN TT,QEVALFRAME ;DONT ALLOW THE CALL TO EVALFRAME
JRST FRM2B ; ITSELF TO BE OUTPUT
FRM4A: PUSH P,(D)
FRM4: ;ERRFRAME COMES HERE
HLRO TT,(D) ;ONE LEFT HALF'S AS GOOD AS ANOTHER...
JSP T,FIX1A ;MAKE UP PREVIOUS SPECIAL PDL POINTER
PUSHJ P,ACONS
EXCH B,(P)
MOVE TT,1(D)
CAME TT,[$APPLYFRAME]
JRST FRM8
PUSH P,A
PUSH P,B
MOVE T,-2(D) .SEE $APPLYFRAME ;BECAUSE THERE IS A DISCUSSION
JUMPL T,FRM5 ; OF THE FRAME FORMAT THERE
MOVEI A,(T)
TLCN T,-1 ;THINK ABOUT THIS WHEN YOU LOOK!
JRST FRM7
HLRS T ;SUBTLE WAY TO GET NEGATION
ADDI T,(D)
FRM5: SETZ A,
FRM5A: HRRZ B,(T)
PUSHJ P,XCONS
AOBJN T,FRM5A
PUSHJ P,NREVERSE
FRM7: PUSHJ P,ACONS
POP P,B
PUSHJ P,XCONS
MOVEI B,(A)
POP P,A
FRM8: PUSHJ P,XCONS
MOVE B,A ;OUTPUT 4-LIST: "EVAL" OR "APPLY" OR "ERR" [A SYMBOL]
HRROI TT,(D) ; FRAME (REGPDL) POINTER [A FIXNUM]
JSP T,FIX1A ; <FORM> [EVAL] OR (<FN> <ARGS>) [APPLY]
PUSHJ P,CONS ; OR <MSG-FORM> [ERR]
MOVE TT,1(D) ; ALIST (SPECPDL) POINTER [A FIXNUM]
MOVEI B,QOEVAL
CAMN TT,[$APPLYFRAME]
MOVEI B,QAPPLY
CAMN TT,[$ERRFRAME]
MOVEI B,QERR
PUSHJ P,XCONS
JRST POPBJ
FRM2B: TLNE R,1
ADD D,R70+2 ;WHEN SEARCHING FORWARD, SKIP OVER CALL
JRST FRM2A ;TO EVALFRAME
GTPDLP: ;CALLED BY JSP R,GTPDLP; RETURNS PDL PTR IN D
MOVEI D,(P)
JUMPE A,GTPDL2 ;ARG=NIL => START SEARCH FROM CURRENT PDL POS
JSP T,FXNV1 ;NOTE: EVALFRAME LOOKS AT BIT 3.1 OF R
JUMPL TT,GTPDL5 ;BIT 3.1 OF R = 0 WHEN SEARCHING BACK THE PDL
TLO R,1 ;BIT 3.1 OF R = 1 WHEN SEARCHING FORWARD
MOVNS TT ;WANT TO SKIP OVER THE FRAME MARKER WHEN
SKIPN TT ; SEARCHING FORWARD (SINCE A PDLPOINTER WILL
SKIPA TT,C2 ; BE POINTING TO ONE BELOW A FRAME MARKER)
ADD TT,R70+2
GTPDL5: TLZ TT,-1
HRRZ T,C2
CAIGE TT,(T)
JRST GTPDL1
MOVEI T,(P)
SUBI T,(TT)
JUMPLE T,GTPDL1
MOVEI T,(TT)
CAIL T,(P)
MOVE TT,P
HRROI D,(TT)
GTPDL2: MOVE TT,(R) ;KEY ON WHICH TO SEARCH
JUMPE TT,2(R) ;MATCH 0 => NO SEARCH, JUST GIVE OUT PDL PTR
MOVE F,1(R) ;WELL, IT'S POSSIBLE TO SEARCH FOR TWO THINGS
TLNE R,1
JRST GTPDL4
HRRZ T,C2
GTPDL3: CAIL T,(D) ;A BACK SEARCH
JRST 2(R) ;SEARCHED-AND-FAILED EXIT
CAMN TT,(D)
JRST GTPX0
CAMN F,(D)
JRST GTPX1
SOJA D,GTPDL3
GTPDL4: MOVEI T,(P)
GTP4A: CAMN TT,(D)
JRST GTPX0
CAMN F,(D)
JRST GTPX1
CAIG T,(D)
JRST 2(R) ;FAILURE
AOJA D,GTP4A
GTPX0: TDZA F,F
GTPX1: MOVEI F,1
JRST 3(R)
FRETURN: TDZA C,C ;LH OF C REMEMBERS WHICH ENTRY
FRETRY: MOVSI C,TRUTH
HRR C,B
JSP R,GTPDLP
0
JFCL
MOVEI F,(D)
MOVE TT,[$EVALFRAME]
CAMN TT,1(F)
JRST FRETR1
MOVE TT,[$APPLYFRAME]
CAME TT,1(F)
JRST FRERR
FRETR1: MOVEI D,(F)
SUBI D,(P)
HRLI D,(D)
HRRI D,(F)
MOVE TT,[$UIFRAME]
CAME TT,(D) ;SEARCH FOR A USER INTERRUPT FRAME
AOBJN D,.-1
CAMN TT,(D)
JSP TT,UIBRK
FRP1: SKIPE T,PA4 ;BREAK UP A DOMINEERING PROG
CAIL F,(T) ;[WHICH BREAKS UP INTERIOR ERRSETS AND CATCHES]
JRST FRP2
MOVEI TT,FRP1-1 ;FAKE OUT RETURN BY INSERTING A RETURN-ADDRESS
MOVEM TT,-LPRP+1(T) ;OF FRP1 ON THE PDL
JRST RETURN
FRP2: SKIPE B,ERRTN ;BREAK UP A DOMINEERING ERRSET
FRP2A: CAIL F,(B)
JRST FRP4
MOVEI T,FRP1
MOVEI TT,FRP1
JRST BKRST0
FRP4: SKIPE B,CATRTN ;BREAK UP A CATCH
CAIL F,(B)
JRST FRP3
MOVEI T,FRP1 ;IN CASE OF UNWIND-PROTECT
MOVEI TT,FRP1
JRST BKRST0
FRP3: SKIPN B,EOFRTN ;BREAK OUT OF ANY E-O-F SET READS
JRST FRP3QA
CAIGE F,(B)
JRST FRP2A
FRP3QA: MOVEI A,(C)
IFE PAGING,[
ADDI F,1 ;FIX UP PDL POINTERS
SUB F,C2
HRLS F
ADD F,C2
MOVE P,F
HRRZ F,-2(P)
SUB F,FXC2
HRLS F
ADD F,FXC2
MOVE FXP,F
HLRZ F,-2(P)
SUB F,FLC2
HRLS F
ADD F,FLC2
MOVE FLP,F
] ;END OF IFE PAGING
IFN PAGING,[ ;IN A PAGED SYSTEM, THE PDLOV HANDLER
HRROI P,1(F) ; WILL FIX UP THE LHS OF THE PDL PTRS
HLRO FLP,-2(P)
HRRO FXP,-2(P)
IFN PDLBUG,[
PFIXPDL TT
FLPFIXPDL TT
FXPFIXPDL TT
] ;END OF IFN PDLBUG
] ;END OF IFN PAGING
HLRZ TT,-1(P)
TLNN C,-1 ;FOR "FRETURN" JUST UNBIND TO MARKED
JRST UBD ; POINT, AND POP FRAME
PUSHJ P,UBD
HLRZ TT,(A) ;BUT DO MORE FOR "FRETRY", AFTER UBD
JSP T,%CADDR
POPI P,L$EVALFRAME ;GET RID OF BASIC EVALFRAME
CAIE TT,QAPPLY
JRST EVAL
HRRZ B,(A)
HLRZ B,(B)
HLRZ A,(A)
HLRE T,(P) ;GET RID OF ARGS ON APPLYFRAME
SKIPG T ;FIGURE OUT LENGTH OF ARGS PART
MOVEI T,1
HRLI T,(T)
SUB P,T
JRST .APPLY
SUBTTL GETCHAR, GETCHARN, AND INTERNAL STRING FUNCTIONS
$GETCHARN: PUSH P,CFIX1 ;SUBR 2 - NCALLABLE
SKIPA F,[ZPOPJ,,CPOPJ]
GETCHAR: MOVE F,[FALSE,,RDCH2] ;SUBR 2
SKIPE V.RSET
JRST GETCH8
SKIPG D,(B)
JRST GETCH4
PUSHJ P,PNGT0
GETCH1: SOJL D,(F)
IDIVI D,BYTSWD ;(Q,R) QUOTIENT,REMAINDER IN D,R
SOJL D,GETCH3
GETCH2: HRRZ A,(A) ;CDR BY Q WORDS
SOJGE D,GETCH2 ;RECALL THAT (CDR NIL) = NIL
JUMPE A,GETCH4
GETCH3: HLRZ TT,(A)
LDB TT,BPARS(R)
JUMPN TT,(F)
GETCH4: MOVS F,F
JRST (F)
GETCH8: JSP T,FXNV2
PUSHJ P,PNGET
JUMPG D,GETCH1
JRST GETCH4
;Table of byte-ptrs, into "array" by indirecting thru sar of STR/:ARRAY
BPAR: REPEAT 5, @<<35-7*.RPCNT>_36>+07_30 TTSAR+STR%AR
;Table of byte-ptrs for absolute address, index'd by TT
BPARS: REPEAT 5, <<35-7*.RPCNT>_36>+07_30 (TT)
%ISC.N: PUSH P,CFIX1 ;+INTERNAL-CHAR-N
BAKPRO
MOVE D,(B) ;INDEX OF DESIGNATED CH
IDIVI D,5
STRWDNO TT,A ;WORD-INDEX-IN-ARRAY OF STRING BASE
ADDI R,BPARS-BPAR ;USE OTHER BP TABLE IF PURE STRING
ADDI TT,(D) ;WORD-INDEX-IN-STRING OF REQUESTED CHAR
LDB TT,BPAR(R) ;IMPURE STRINGS HAVE WORD-INDEX INTO
NOPRO
POPJ P, ; STR/:STRING-ARRAY
%ISR.N: MOVE F,(C) ;+INTERNAL-RPLACHAR-N
BAKPRO
MOVE D,(B) ;INDEX OF DESIGNATED CH
IDIVI D,5
STRWDNO TT,A ;WORD-INDEX-IN-ARRAY OF STRING BASE
ADDI R,BPARS-BPAR ;USE OTHER BP TABLE IF PURE STRING
ADDI TT,(D) ;WORD-INDEX-IN-STRING OF DESIGNATED CH
DPB F,BPAR(R)
NOPRO
POPJ P,
%ISW.N: PUSH P,CFIX1 ;+INTERNAL-STRING-WORD-N
BAKPRO
STRWDNO TT,A ;WORD-INDEX-IN-ARRAY OF STRING BASE
JRST .+4
ADD TT,(B) ;WORD-INDEX-IN-STRING OF REQUESTED WORD
MOVE TT,@TTSAR+STR%AR
POPJ P,
ADD TT,(B)
MOVE TT,(TT)
NOPRO
POPJ P,
%ISSW.N: MOVE R,(C) ;+INTERNAL-SET-STRING-WORD-N
BAKPRO
STRWDNO TT,A ;WORD-INDEX-IN-ARRAY OF STRING BASE
JRST .+4
ADD TT,(B) ;WORD-INDEX-IN-STRING OF REQUESTED WORD
MOVEM R,@TTSAR+STR%AR
POPJ P,
ADD TT,(B)
MOVEM R,(TT)
NOPRO
POPJ P,
SUBTTL SUBLIS
SUBLIS: JUMPN A,SUBLSA ;NULL SUBSTITUTION LIST?
MOVE A,B ;YES, RETURN SECOND ARG
POPJ P,
SUBLSA: PUSH P,A ;USES ONLY A,B,T,TT,D,R
PUSH P,B
MOVE D,A
HLLOS NOQUIT ;MOBY DELAYED QUIT FEATURE
SUBL1: JUMPE D,SUBL2
HLRZ T,(D) ;A SUBSTITUTION LIST IS LIKE
HLRZ B,(T) ;((U1 . S1) (U2 . S2) . . .)
SKOTT B,SY
JRST SUBLOSE
SUBL1B: HRRZ A,(B) ;SEXPRESSION S IS SUBSTITUTED FOR ATOM U
HLRZ A,(A)
CAIN A,QSUBLIS
JRST SUBL1A
HRRZ A,(T)
MOVEM B,T
HRRZ B,(B)
PUSHJ P,CONS
MOVEI B,QSUBLIS ;PUT "SUBLIS" PROPERTY ON THOSE ATOMS U IN THE
PUSHJ P,XCONS ;SUBSTITUTION LIST ((U1 . V1) . . . (UN . VN))
HRRM A,(T)
SUBL1A: HRRZ D,(D)
MOVE T,INTFLG
AOJGE T,SUBL1 ;0=> NO INT, -1=> USER INT, -2,-3=> QUIT
MOVE R,D
JRST SUBL3Q
SUBLOSE: JUMPE B,SUBL3Z
MOVEI A,(B)
MOVEI R,(D)
MOVEI T,[LER3 [SIXBIT \NON-ATOMIC ITEM - SUBLIS!\]]
MOVEM T,-2(P)
SUBL3Q: SUB P,R70+1
JRST SUBL3A
SUBL3Z: MOVEI B,NILPROPS
JRST SUBL1B
SUBL2: POP P,A
PUSHJ P,SBL1
JFCL
MOVEI R,0 ;REMOVE ALL "SUBLIS" PROPERTIES
SUBL3A: MOVE TT,(P)
SUBL3: CAIN R,(TT) ;REMOVE "SUBLIS" PROPERTY
JRST SUBL4
HLRZ T,(TT)
HLRZ T,(T)
JUMPN T,.+2
MOVEI T,NILPROPS
HRRZ B,(T)
MOVE B,(B)
HLRZ D,B
HRRZ B,(B)
CAIN D,QSUBLIS
HRRM B,(T)
HRRZ TT,(TT)
JRST SUBL3
SUBL4: SUB P,R70+1
JRST CZECHI
SBL1: SKOTT A,LS ;TRACE THROUGH STRUCTURE IN (A) SUBSTITUTING
JRST SBL2 ;(GET 'U 'SUBLIS) FOR U WHEREVER IT IS NON-NIL
PUSH P,A
HLRZ A,(A)
PUSHJ P,SBL1
JRST SBL4
EXCH A,(P)
HRRZ A,(A)
PUSHJ P,SBL1
JFCL
HRRZ B,(P)
SBL5: SUB P,R70+1
PUSHJ P,XCONS
JRST POPJ1
SBL4: HRRZ A,@(P)
PUSHJ P,SBL1
JRST POPAJ
HLRZ B,@(P)
JRST SBL5
SBL2: TLNN TT,SY
JRST SBL2B
HRRZ B,(A)
SBL2A: HLRZ T,(B)
CAIE T,QSUBLIS
POPJ P,
HRRZ A,(B)
HLRZ A,(A)
JRST POPJ1
SBL2B: JUMPN A,CPOPJ
HRRZ B,NILPROPS
JRST SBL2A
SUBTTL SAMEPNAMEP AND ALPHALESSP
SAMEPNAMEP: TDZA D,D ;USES ONLY A,B,T,TT,D
ALPHALESSP: MOVE D,VT.ITY ;MUST PRESERVE C,AR1,AR2A,R,F (see SORT)
SKOTT A,SY
JUMPN A,ALPL4
SKOTT B,SY
JUMPN B,ALPL5
ALPL0: PUSH P,B
PUSHJ P,PNGET
EXCH A,(P)
PUSHJ P,PNGET
POP P,B ;FROM NOW ON, A HAS PNAME OF 2ND ARG, B OF 1ST
JRST ALPLP1
ALPL3: HRRZ A,(A)
HRRZ B,(B)
ALPLP1: JUMPE B,ALPL2
JUMPE A,FALSE ;ON SAMEPN, LOSE IF 2ND ARG RUNS OUT BEFORE 1ST
HLRZ T,(A) ;ON ALPHAL, LOSE IF 2ND ARG IS SHORTER THAN 1ST
MOVE T,(T)
HLRZ TT,(B) ;FOR SAMEPN, WILL RETURN NIL IF
;TWO ARE UNEQUAL IN SOME PLACE
CAMN T,(TT) ;NO INFO IF CORRESPONDING PLACES ARE EQUAL
JRST ALPL3
JUMPE D,FALSE ;BUT NOT EQUAL IN SAMENAMEP MEANS LOSE
MOVE TT,(TT) ;MUST DO SOME HAIR FOR THE ALPHALESSP
LSHC T,-1 ; COMPARE TO WIN, SINCE PNAME WORDS ARE
CAMG T,TT ; LOGICAL DATA, NOT ARITHMETIC
JRST FALSE ;2ND ARG STRICTLY LESS THAN FIRST
JRST TRUE ;2ND ARG STRICTLY GREATER THAN FIRST
ALPL2: EXCH A,D
JUMPE D,NOT ;IF ALPHAL, WIN WHEN A NON-NUL
;[FOR 1ST ARG IS PROPER SUBSTRING OF 2ND]
POPJ P, ;IF SAMEPN, WIN WHEN A NUL
;[FOR CORRESPONDENTS HAVE BEEN EQUAL ALL ALONG]
ALPL5: EXCH A,B ;FIRST ARG SYMBOL, SECOND ARG ISN'T.
PUSHJ P,ALPL6
JRST [EXCH A,B
JRST ALPL0]
SKIPE D
MOVEI D,QGREATERP
JRST ALPL7
ALPL4: PUSHJ P,ALPL6
JRST ALPL0
ALPL7: PUSHJ P,[PUSH P,A
SKIPN D
MOVEI D,QSAMEPNAMEP
PUSH P,D
PUSH P,B
MOVNI T,3
XCT SENDI ;Send the object a message
]
ALPL5X: PUSHJ FXP,RST5M1
JRST POP1J
;; CHECKS TO SEE IF ACC A HOLDS A USER HUNK. SKIPS IF SO.
ALPL6: SKIPE USRHNK ;IF USERHUNKS NOT ENABLED, OR IF THIS NON-SYM
TLNN TT,HNK ; ARGUMENT ISN'T A HUNK, THEN LET PNGET BARF
POPJ P, ; ABOUT NOT GETTING A SYMBOL
PUSHJ P,USRHNP ;IS IT A USER-HUNK?
JUMPE T,CPOPJ ;NOPE, SO EXIT WITH NO SKIP
POP P,T
PUSHJ FXP,SAV5 ;YES, SO SKIP AND LEAVE ACC'S STACKD UP
JRST 1(T)
SYSP: MOVEI B,TRUTH ;SUBR 1 - DETERMINE WHETHER SYMBOL HAS
SYSP3:
10% CAIGE A,BEGFUN ; A "SYSTEM" SUBR PROPERTY
10$ CAIL A,ENDFUN
JRST FALSE
10% CAIG A,ENDFUN
10$ CAIL A,BEGFUN
JRST BRETJ
CAIGE A,BSYSAR ; ... OR MAYBE A SYSTEM ARRAY PROPERTY
JRST SYSP6
CAIGE A,ESYSAR
JRST BRETJ ;RETURNS T FOR SUBR/SAR POINTERS
CAIE B,QAUTOLOAD
JRST SYSP6
CAIL A,BSYSAP
CAIL A,ESYSAP
JRST FALSE
JRST BRETJ
SYSP6: JSP T,SPATOM ;RETURNS FALSE FOR NON-SYMBOLS
JRST FALSE
PUSH P,A ;TRY THE AUTOLOAD PROPERTY FIRST
MOVEI B,QAUTOLOAD
PUSHJ P,$GET
JUMPN A,SYSPZ
SYSPZ1: POP P,A
MOVEI B,ASBRL
PUSHJ P,GETL1
JUMPE A,CPOPJ ;RETURNS FALSE FOR SYMBOLS WITH NO FN PROPS
HLRZ B,(A) ;RETURNS NAME OF PROPERTY OF ONE IS FOUND,
JSP T,%CADR
JRST SYSP3 ; AND THE PROPERTY VALUE PASSES THE SYSP TEST
SYSPZ: CAIL A,BSYSAP
CAIL A,ESYSAP
JRST SYSPZ1 ;AUTOLOAD PROPERTY NOT SYSTEM'S - GO ON
POP P,A ;ELSE FLUSH STACK OF A
MOVEI A,QAUTOLOAD ;AND RETURN AUTOLOAD
POPJ P,
GCTWA: JUMPE A,GCTWI
HLRZ A,(A)
PUSHJ P,NOTNOT
MOVEM A,VGCTWA
JRST GCTWX
GCTWI: SETOM IRMVF
GCTWX: MOVEI A,IN0
SKIPGE IRMVF
ADDI A,1
SKIPE VGCTWA
ADDI A,10
POPJ P,
SUBTTL COPYSYMBOL FUNCTION
COPYSYMBOL:
JSP T,SPATOM
JSP T,PNGE
CPSY3: JUMPN B,CPSY0 ;IF NON-NIL SECOND ARG COPY PLIST, VC AND ARGS
CPSY: PUSHJ P,PNGT0 ;COPY THE SYMBOL
JRST SYCONS
CPSY0: PUSH P,A ;SAVE OLD SYMBOL
PUSHJ P,CPSY ;GET A NEW COPY
EXCH A,(P) ;SAVE NEW COPY, GET OLD
PUSH P,A ;SAVE OLD ON TOP OF STACK
HRRZ A,(A) ;GET PLIST
JUMPE A,CPSY1 ;IF NO PLIST THEN TRY VALUE CELL
MOVEI B,NIL ;NOW GET A NEW COPY OF THE PLIST
PUSHJ FXP,SAV5M3
PUSHJ P,.APPEND
PUSHJ FXP,RST5M3
HRRM A,@-1(P) ;STORE IN NEW SYMBOL
CPSY1: SKIPN A,(P)
JRST CPSY4
HLRZ A,(A) ;POINTER TO OLD SYMBOL BLOCK
HLRZ T,1(A) ;ARGS PROPERTY
JUMPE T,.+3 ;IF NONE THEN DON'T HACK
HLRZ TT,@-1(P) ; ELSE COPY THE ARGS PROPERTY
HRLM T,1(TT)
HRRZ A,@(A) ;GET CONTENTS OF VALUE CELL
CAIN A,QUNBOUND ; IF UNBOUND DON'T BOTHER COPYING
JRST S1PAJ
CPSY4: EXCH AR1,-1(P) ;ELSE COPY VC BY DOING A (SET NEW OLD)
JSP T,.SET
EXCH AR1,-1(P)
JRST S1PAJ
SUBTTL SETSYNTAX AND OTHER READER SYNTAX FUNCTIONS
;ARGS ARE CHAR (AS NUMBER OR ATOM), SYNTAX-CODE, MACRO-OR-TRANSLATION
SETSYNTAX: SETZ AR1, ;SUBR 3
MOVEI AR2A,(B)
JSP T,SPATOM
JRST RSSYN1
JSP T,CHNV1
JSP T,FIX1A
RSSYN1: CAIN AR2A,QMACRO
JRST RSSYN2
CAIE AR2A,QSPLICING
JRST RSSYN3
MOVEI AR1,[QSPLICING,,NIL]
RSSYN2: MOVE B,A
PUSH P,CTRUE
PUSH P,AR1
JRST SSMC43
RSSYN3: MOVSI AR1,40000 ;WAY TO FAKE OUT SSYN0
MOVEI B,(A)
JUMPE C,RSSYN5 ;SKIP IF NO CHTRAN STUFF
PUSHJ P,RSSYN4
HRRZM A,(FXP)
MOVEI A,(B) ;LOSING RETROFIT FOR NSTST
MOVEI B,(C)
PUSHJ P,SSCHTRAN
SUB FXP,R70+1
RSSYN5: JUMPE AR2A,TRUE ;XIT IF NO SYNTAX STUFF
CAIE AR2A,QSINGLE
JRST RSSYN7
NW% PUSH FXP,[600500]
NW$ PUSH FXP,[RS.SCS]
MOVEI C,(FXP)
JRST RSSYN8
RSSYN7: MOVE C,AR2A
PUSHJ P,RSSYN4
HLRZS (FXP)
RSSYN8:
MOVEI A,(B) ;LOSING RETROFIT FOR NSTAT
MOVEI B,(C)
PUSHJ P,SSSYNTAX
SUB FXP,R70+1
CTRUE: JRST TRUE
RSSYN4: PUSH FXP,R70
MOVEI A,(C)
JSP T,SPATOM
POPJ P,
MOVEI C,(B) ;SAVE B
JSP T,CHNV1
MOVEI A,(TT)
MOVEI B,(C) ;RESTORE B
MOVEI C,(FXP) ;SET C TO BE FIXNUM ON TOP OF PDL
JSP T,RSXST
MOVE TT,@RSXTB
MOVEM TT,(FXP)
POPJ P,
SSCHTRAN:
NW% SKIPA F,[HRRM R,(TT)]
NW$ SKIPA F,[DPB R,[001100+TT,,]]
SSSYNTAX:
NW% MOVSI F,(HRLM R,(TT))
NW$ MOVE F,[LDB R,[113300+TT,,]]
PUSH P,[SPROG3]
MOVSI AR1,40000 ;LOSING CROCK
SSSYN1:
MOVEI C,(B) ;LOSING CROCK
MOVEI B,(A)
PUSHJ P,GRCTI ;GET INDEX FOR RCT INTO D
TLNE AR1,40000 ;40000 BIT SAYS EVAL 3RD ARG
JSP T,FXNV3
JSP T,SMCR2 ;LOCK AND SETUP RCT ARRAY PTR INTO TT
ADDI TT,(D)
XCT F ;MAY SKIP (FOR (STATUS CHTRAN))
UNLKPOPJ ;MUST BE ONLY ONE INSTRUCTION.
NW% TLNE TT,4000 ;SKIP UNLESS MACRO CHAR
NW$ TLNE TT,(RS.MAC);SKIP UNLESS MACRO CHAR
MOVEI TT,(D) ;USE CHARACTER AS ITS OWN CHTRAN
TLZ TT,-1
UNLKPOPJ
GRCTI: JSP T,FXNV2 ;GET READTABLE INDEX
SA% CAIGE D,NASCII
SA$ CAIGE D,1010
JUMPGE D,CPOPJ
JRST GRCTIE
SMACRO:
MOVEI B,(A)
PUSHJ P,GRCTI
JSP T,SMCR2
ADD TT,D
SMCR1: MOVEI A,NIL
MOVE C,(TT)
UNLOCKI
NW% TLNN C,4000
NW$ TLNN C,(RS.MAC)
POPJ P, ;EXIT WITH NIL IF NO MACRO CHAR
NW% TLNE C,40
NW$ TRNE C,RS.ALT
MOVEI A,QSPLICING ;SPLICING TYPE
PUSHJ P,NCONS
NW% MOVEI B,(C)
NW$ PUSH P, A
NW$ PUSHJ P, GETMAC
NW$ HRRZ B, (A) ;CDR OF ASSQ IS FUNCTION
NW$ POP P, A
PUSHJ P,XCONS
POPJ P,
IFN NEWRD,[
;;;ROUTINE TO GET MACRO ENTRY. CHAR IN D.
;;; CLOBBERS A, B, TT, RETURNS (CHAR . FCN) IN A
;;; RSXST MUST HAVE BEEN DONE
GETMAC: MOVEI A, 206 ;GET FCN LIST FROM READTABLE
HRRZ B, @RSXTB ;..
MOVE A, D ;CHARACTER
PUSHJ P, IASSQF ;DEPENDS ON D,R,F BEING PRESERVED
JUMPE A, [LERR [SIXBIT/MACRO CHARACTER VANISHED#!!/]]
POPJ P,
] ;END OF IFN NEWRD
SSMACRO:
CAME T,XC-3 ;CROCK TO GET NSTAT UP FAST
PUSH P,R70
POP P,A
POP P,C
POP P,B
SKIPE A
PUSHJ P,ACONS
PUSH P,A
SSMC43: PUSHJ P,GRCTI
JSP T,SMCR2
ADD TT,D
HRRZM TT,RM4
JUMPE C,SSM1
NW% HRLI C,404500
NW$ MOVE C,[RS.CMS]
SKIPE A,(P)
JRST SSM3
SSM4:
EXCH C,@RM4
NW% HRRZ A,C
NW% TLNE C,4000
NW% PUSHJ P,SSGCREL ;CLOBBERS C
IFN NEWRD,[
TLNN C,(RS.MAC)
JRST SSM4AA
PUSHJ P, GETMAC
;REMOVE PREVIOUS MACRO FUNCTION FROM ASSQ LIST.
;**** (SETQ MAC-LIST (DELQ A MAC-LIST)) ****
SSM4AA: ;AND NO GCREL CRUFT NECC.
]
MOVE C,@RM4
NW% HRRZ A,C
NW% TLNE C,4000
NW% PUSHJ P,SSGCPRO
NW% HRRM A,@RM4
NW$ DPB D, [001100,,@RM4] ;MACROS MUST HAVE SELF AS CHTRAN
NW$ MOVE B, D ;***SURELY THIS COULD BE A LOT LESS KLUDGEY***
NW$ PUSHJ P, XCONS
NW$ MOVE B, A
NW$ MOVEI A, 206
NW$ MOVE A, @RSXTB
NW$ PUSHJ P, XCONS
NW$ MOVE B, A
NW$ MOVEI A, 206
NW$ MOVEM B, @RSXTB
SUB P,R70+1
MOVE TT,RM4
JRST SMCR1
SSM3: MOVEI AR1,(B)
HLRZ A,(A)
JSP T,CHNV1
CAIN TT,"S ;SPLICINGP
NW% TLO C,40
NW$ TRO C,RS.ALT
MOVEI B,(AR1)
JRST SSM4
SMCR2: LOCKI
JRST RSXST
SSM1: HRLI D,2
MOVE C,RCT0(D)
NW% TLNE C,4000 ;WAS IT ORIGINALLY A MACRO CHAR?
NW$ TLNE C,(RS.MAC)
MOVE C,D
JRST SSM4
SSGCREL: TDZA D,D ;MUST HAVE USER INTERRUPTS OFF
SSGCPRO: MOVEI D,1
JSP T,SPATOM
JRST SSGCP1
HLRZ T,(A) ;GET SYMBOL BLOCK, FIRST WORD
MOVE T,(T)
TLNE T,SY.CCN ;IF SYM NOT PROTECTED BECAUSE OF BEING
POPJ P, ; "NEEDED" BY COMPILED CODE, THEN PROLIS-IFY
SSGCP1: SOVE A B
HRRZ R,(B)
CAIGE R,200
HRL R,VREADTABLE
HRRI R,IN0(R)
MOVE B,PROLIS
JUMPE D,SSGRL1
PUSHJ P,ASSOC
JUMPE A,SSPROQ
HLRZ A,(A)
MOVEM A,-1(P)
SSPROQ: MOVE B,R
PUSHJ P,CONS1
MOVE B,-1(P)
PUSHJ P,XCONS
MOVE B,PROLIS
PUSHJ P,CONS
MOVEM A,PROLIS
MOVE A,-1(P)
SSPROX: POP P,B
JRST POP1J
SSGRL2: MOVE A,-1(P)
SSGRL1: PUSHJ P,IASSQF ;INTERNAL ASSQ WITH NO CHECKING
JRST SSPROX ; NO SKIP ON FAILURE TO FIND
HRRZ B,(B) ; SKIP ON SUCCESS
HRRZ T,(A)
CAME R,(T) ;COMPARES READTABLE AND NUMBER
JRST SSGRL2
MOVE B,PROLIS
PUSHJ P,.DELETE
MOVEM A,PROLIS
MOVEI A,NIL
JRST SSPROX
AUTOLOAD: ;T SHOULD CONTAIN THE SYMBOL NAME, A SHOULD
HRL A,T ; CONTAIN THE AUTOLOAD PROPERTY
PUSHJ P,ACONS
MOVSS (A)
PUSH P,A ;FOR GC PROTECTION
PUSH FXP,D
MOVSI D,(A)
HRRI D,1000 ;AUTOLOAD USER INTERRUPT
PUSHJ P,UINT
POP FXP,D
JRST POP1J
IFN ITS,[
SUBTTL SYSCALL FUNCTION
SYSCALL:
MOVEI D,QSYSCALL
CAML T,[-10.]
CAMLE T,XC-2
JRST WNALOSE
MOVEI D,2(P)
ADD D,T ;D POINTS TO ARG WITH .CALL NAME IN IT
MOVNM T,SYSCL8 ;#ARGS+2
JSP T,0PUSH+2(T) ;PUSH SLOTS FOR COPYING FIXNUM ARGS
SCSL0: MOVE A,-1(D)
JSP T,FXNV1 ;<CONTROL-BITS>,,<NUMBER-OF-OUTPUTS-DESIRED>
HLL D,TT
HRRZS TT
CAILE TT,20
JRST SCSTMA
HRLM TT,SYSCL8 ;#ANSWERS,,#ARGS+2
MOVE A,(D)
PUSH FXP,D
PUSHJ P,SIXMAK
MOVSI D,(SETZ)
EXCH D,(FXP) ;THE SETZ GETS PUT OUT HERE
MOVEI R,-1(FXP)
MOVEI F,(FXP)
PUSH FXP,TT ;THE SIXBIT FOR THE NAME OF THE .CALL
HLRZ T,D
TLZ D,-1
TLO T,5000 ;THE CONTROL BITS ARG
JRST SCSL1A
SCSL1: HRRZ T,(D)
SKOTT T,FX
JRST SCSL1A
MOVE TT,(T)
MOVEM TT,(R)
MOVEI T,(R)
SUBI R,1
SCSL1A: PUSH FXP,T
MOVEI AR1,(T)
CAIN AR1,TRUTH
MOVEI AR1,TTYIFA
MOVEI T,(AR1) ;THIS IS AN INLINE CODED XFILEP
LSH T,-SEGLOG
MOVE T,ST(T)
TLNN T,SA
JRST SCSL6
MOVE T,ASAR(AR1) ;MUST ALSO HAVE FILE BIT SET
TLNN T,AS.FIL\AS.JOB ;ALLOW EITHER JOB OR FILE
JRST SCSL6
MOVE TT,[@TTSAR]
ADDM TT,(FXP)
SCSL6:
CAIGE D,(P) ;LOOP TO INSTALL REMAINING INPUT ARGS
AOJA D,SCSL1
HLRZ D,SYSCL8
SOJL D,SCSL4
MOVEI T,1(FXP)
HRLI T,2000
SCSL3: PUSH FXP,T ;LOOP TO INSTALL ANSWER REQUESTS
ADDI T,1
SOJGE D,SCSL3
SCSL4: MOVSI T,(SETZ) ;FINAL SETZ SIGNALS END OF PARAMETERS
IORM T,(FXP) ;[THERE WILL ALWAYS BE AT LEAST ONE, I.E. THE CONTROL]
MOVEI TT,F.CHAN
.CALL (F)
JRST SCSFAI
SETZB A,B
HLRZ D,SYSCL8
SCSL5: JUMPE D,SCSXIT ;LOOP TO LISTIFY UP NUMERIC ANSWERS
POP FXP,TT
PUSHJ P,CONSFX
SOJA D,SCSL5
SCSTMA: MOVEI TT,15
JRST SCSXT1
SCSFAI: .SUSET [.RBCHN,,R]
.CALL SCSTAT
.VALUE
LDB TT,[220600,,D]
MOVE D,SYSCL8
HLRS D
SUB FXP,D ;TAKE OFF THE SLOTS FOR ANSWERS
JSP T,FXCONS ;LISP NUMBER FOR ERROR CODE
SCSXIT: MOVE D,SYSCL8 ;SYSCL8 HAS 2+#ARGS
ADDI D,-1(D) ;PUSHED WAS 3+2*#ARGS
HRLS D ; WHICH IS 2*SYSCL8-1
SUB FXP,D
SCSXT1: MOVE D,SYSCL8
HRLS D
SUB P,D ;STRAIGHTEN UP P
POPJ P,
SCSTAT: SETZ
SIXBIT \STATUS\ ;GET CHANNEL STATUS
,,R ;CHANNEL #
402000,,D ;STATUS WORD
.SEE IOCERR
.SEE CHNI1
] ;END OF IFN ITS
$INSRT STATUS ;HAIRY STATUS FUNCTIONS
SUBTTL CURSORPOS FUNCTION
IFN USELESS,[
CURSORPOS:
MOVEI D,QCURSORPOS ;LSUBR (0 . 3)
CAMGE T,XC-3 ;MORE THAN THREE ARGS LOSES
JRST WNALOSE
JUMPE T,CRSRP0 ;IF NO ARGS, IS FOR DEFAULT TTY
CRSRPS: SKIPN AR1,(P) ;ELSE LAST ARG MAY BE TTY FILE ARRAY
JRST CRSRN
MOVEI TT,(AR1)
LSH TT,-SEGLOG
SKIPGE ST(TT)
JRST CRSRMP
CAIN AR1,TRUTH ;LAST ARG = T
HRRZ AR1,V%TYO ; MEANS THE DEFAULT TTY
CRSR10: CAMN T,XC-3 ;FOR THREE ARGS MUST HAVE A FILE ARRAY
JRST CRSRP8
JSP TT,XFOSP ;FOR ONE OR TWO ARGS MAY OR MAY
JRST CRSRP0 ; NOT HAVE A FILE ARRAY
IFN SFA,[
JRST CRSFA1 ;FILE
CRSFA5: SUB P,R70+1 ;SFA
CRSFAY: SETZ C,
AOJE T,CRSFA2 ;ONE LESS ARG; ONLY 1 ARG, ARG TO SFA IS NIL
POP P,A ;LISTIFY THE ARGS
PUSHJ P,NCONS ;GENERATE THE INITIAL LIST
AOSN T ;TWO ARGS?
JRST CRSFA4
POP P,B
JSP T,%XCONS ;NOW THE LIST IS IN A
CRSFA4: MOVEI C,(A)
CRSFA2: MOVEI B,QCURSORPOS ;CURSORPOS OPERATION
MOVEI A,(AR1) ;THE SFA ITSELF
JRST ISTCSH
CRSFAZ: HRRO AR1,V%TYO ;GET FILE AS SPECIFIED BY 'T'
JSP TT,XFOSP ;CHECK FOR IT BEING A SFA
JRST (F) ;NOPE
JRST (F)
SOJA T,CRSFAY ;A SFA, HANDLE SPECIALLY
] ;END IFN SFA
CRSRP8:
IFN SFA,[
JSP TT,XFOSP ;CHECK IF FILE OR SFA
JFCL
SKIPA ;NOT SFA
JRST CRSFA5 ;SFA
CRSFA1: ] ;END IFN SFA
SUB P,R70+1 ;IF WE HAVE ONE, IT MUST
PUSH FXP,T ; BE A BONA FIDE TTY OUTPUT FILE
PUSHJ P,TOFLOK
UNLOCKI
POP FXP,T
AOSA T
CRSRP0:
SFA% HRRO AR1,V%TYO
SFA$ JSP F,CRSFAZ ;TRAP OUT IF A SFA
JSP R,PDLA2(T)
MOVEI TT,F.MODE
MOVE D,@TTSAR(AR1)
SKIPGE AR1 ;IF FILE NOT EXPLICITLY GIVEN
SKIPN TTYOFF ; THEN ^W NON-NIL => RETURN NIL
SKIPA
JRST FALSE
JUMPE T,CRSRP1 ;0 ARGS - GET POSITION
AOJE T,CRSRP3 ;1 ARG - SPECIAL HACKS (^P CODES)
SKOTT A,FX
JRST CRSR11
;2 ARGS
MOVEI D,"V ;SET VERTICAL POSITION
PUSHJ P,CRSRP5
CRSR20: MOVEI D,"H ;SET HORIZONTAL POSITION
MOVEI A,(B)
CRSRP5: JUMPE A,TRUE ;NIL MEANS NO CHANGE
JSP T,FXNV1
SKIPGE TT
SETZ TT, ;NEGATIVE ARG NOT ALLOWED
CAILE TT,167 ;NOR ARG ABOVE 167
MOVEI TT,167
IFN ITS\D20, HRLI D,10(TT) ;ADD MAGIC 10 TO AMOUNT FOR ^P
.ELSE JRST FALSE
CRSRP7: PUSHJ FLP,CNPCHK ;CHECK TO SEE IF CAPABILITY EXISTS?
JRST CRSR71
IFN ITS\D20, MOVEI A,TRUTH ;RETURN TRUTH IF WE GOT THIS FAR
.ELSE MOVEI A,NIL ;RIGHT NOW, D10 SYSTEMS CANT "DO IT"
JRST CNPCUR ; THEN DO ACTION, AND EXIT WITH CZECHI
CRSR71: MOVEI A,NIL ;NO CAPABILITY, SO RETURN NIL
JRST CZECHI
;1 ARG CASE
CRSRP3: JSP T,SPATOM
JRST CRSRP4 ;IF NO A SYMBOL, THEN BETTER BE FIXNUM
PUSHJ P,CRSR40 ;GET NUMERIC VALUE OF FIRST CHAR OF SYMBOL
CRSRP6: MOVEI D,(TT)
TRC TT,100
TDNE TT,[-40]
JRST CRSRP2
MOVE TT,GCBT(TT) ;Get a "1" bit in the position specified by TT
TDNN TT,CRSRP9
JRST CRSRP2
JRST CRSRP7
CRSRP4: JSP T,FXNV1
JRST CRSRP6
CRSR40: JSP T,CHNV1
CAIL TT,140
SUBI TT,40 ;CONVERT TO UPPER CASE
POPJ P,
CRSRP9:
ZZZ==0
IRPC X,,[ABCDEFKLMNPQRSTUXZ[\]^_]
ZZZ==ZZZ\<SETZ_-<"X&37>>
TERMIN
ZZZ ;BITS SPECIFYING VALID ^P CODES
EXPUNGE ZZZ ;NOTE: H, I, AND V NOT VALID HERE!
;2 ARG CASE WITH NON-FIXNUM AS FIRST ARG
CRSR11: JUMPE A,CRSR20
JSP T,SPATOM
JRST CRSR12
PUSHJ P,CRSR40
JSP T,FXNV2
SKIPGE D
SETZ D,
CAIE TT,"H
CAIN TT,"V
JRST CRSR13
CAIN TT,"I
JRST CRSR14
CRSR12: WTA [BAD CURSOR CODE - CURSORPOS!]
JRST CRSR11
CRSR13: CAILE D,167
MOVEI D,167
ADDI D,10 ;H AND V RANDOMLY WANT 10 ADDED
CRSR14: MOVSI D,400000(D) .SEE CNPCD1 ;KEEP LH FROM BEING ZERO
HRRI D,(TT)
JRST CRSRP7
;0 ARGS CASE
CRSRP1: PUSHJ P,FORCE1
MOVEI TT,F.MODE
MOVE F,@TTSAR(AR1)
IFE ITS\D20, JRST FALSE
IFN ITS\D20,[
PUSHJ FLP,RCPOS
TLNE F,FBT<EC> ;GET ECHO MODE POSITION
MOVE D,R ; IF FILE IS FOR ECHO AREA
MOVEI TT,(D) ;CONS THEM UP FOR LOSER
JSP T,FIX1A
MOVEI B,(A)
HLRZ TT,D
JSP T,FIX1A
JRST CONS
] ;END OF IFN ITS\D20
CRSRMP: PUSH FXP,T
CRSRM1: HLRZ A,@(P)
MOVE T,(FXP)
MOVEI TT,(T)
ADDI TT,(P)
PUSH P,1(TT)
TRNE T,1
PUSH P,2(TT)
PUSH P,A
PUSHJ P,CRSRPS
HRRZ A,@(P)
MOVEM A,(P)
JUMPN A,CRSRM1
POP FXP,T
CRSRN: MOVEI A,TRUTH
JRST PROGN1
] ;END OF IFN USELESS
SUBTTL RANDOM ROUTINES TO HANDLE A PSEUDO ALIST
%%FUNCTION: MOVEI D,Q%%FUNCTION
JUMPE A,WNAFOSE
HRRZ C,(A)
JUMPN C,WNAFOSE
HLRZ B,(A) ;HALF-ASSED FUNARG BINDING
HRROI TT,(SP) ;ONE LH AS GOOD AS ANOTHER
JSP T,FIX1A
.FUNC4: PUSHJ P,XCONS
MOVEI B,QFUNARG
JRST XCONS
AEVAL: SKIPE A,(P) ;PURPOSELY CRIPPLING POWER OF ALIST
JSP T,FXNV1 ; ROUTINE: FOOEY! - GLS
PUSHJ P,ALIST ;EVAL WITH AN ALIST
SUB P,R70+1
POP P,A
SKIPE T ;ALIST RETURNING NON-ZERO IN T =>
PUSH P,CAUNBIND ; TWO BIND BLOCKS WERE PUSHED
PUSH P,CAUNBIND
POPJ FXP,
;;; ALIST CREATES AN ENVIRONMENT AS SPECIFIED BY A GIVEN A-LIST.
;;; AN A-LIST MAY BE:
;;; [1] NIL, MEANING THE TOP-LEVEL ENVIRONMENT.
;;; [2] T, MEANING THE CURRENT ENVIRONMENT (SEE [4]).
;;; [3] A FIXNUM REPRESENTING A SPECPDL POINTER, AS
;;; RETURNED BY THE EVALFRAME FUNCTION AS THE FOURTH
;;; ITEM. THIS INDICATES THE ENVIRONMENT AS OF
;;; THE SPECIFIED FRAME.
;;; [4] ((<SYMBOL> . <VALUE>) . <A-LIST>)
;;; THAT IS, ONTO ONE OF THE OTHER THREE KINDS OF A-LIST
;;; ONE MAY CONS ADDITIONAL VARIABLE-VALUE PAIRS IN
;;; THE USUAL MANNER. THIS IS A "TRUE A-LIST".
;;; THIS ENVIRONMENT IS CREATED BY REBINDING ALL VARIABLES
;;; WHICH HAVE BEEN BOUND SINCE THEN BACK TO THEIR OLD VALUES,
;;; OR TO THE VALUES SPECIFIED BY THE TRUE A-LIST. IF A GIVEN
;;; VARIABLE WAS BOUND SEVERAL TIMES, ONLY ONE REBINDING IS DONE
;;; TO RECREATE THE OLD ENVIRONMENT. THIS IS DONE BY USING THE
;;; LEFT HALF OF A VALUE CELL TO INDICATE WHETHER OR NOT IT
;;; HAS ALREADY BEEN REBOUND. THIS HAS THE CONSEQUENCE THAT
;;; NOQUIT MUST BE TURNED ON DURING THIS OPERATION.
;;; EITHER ONE OR TWO SPECPDL BLOCKS ARE PUSHED, THE SECOND ONE
;;; BEING NECESSARY IF ANY TRUE A-LIST IS GIVEN. THERE ARE FOUR
;;; STEPS TO THE PROCESS:
;;; [1] CHECK ARGUMENT THOROUGHLY FOR ERRORS. IF A TRUE
;;; A-LIST IS GIVEN, ALL SYMBOLS ON THE A-LIST ARE GIVEN
;;; VALUE CELLS IF THEY DON'T HAVE ANY ALREADY.
;;; [2] TURN ON NOQUIT. IF A TRUE A-LIST IS GIVEN, BIND ALL
;;; THE SYMBOLS AS SPECIFIED, MARKING THE VALUE CELLS
;;; AS THEY ARE BOUND, AND NEVER BINDING A SYMBOL TWICE.
;;; WHEN DONE, PUSH THE TRUE A-LIST ONTO THE SPECPDL
;;; SO THAT AUNBIND CAN RESTORE THINGS CORRECTLY.
;;; [3] SCAN THE SPECPDL FROM THE POINT SPECIFIED BY THE
;;; SPECPDL POINTER (FROM THE BOTTOM IF NIL), AND BIND
;;; ALL VALUES CELLS SEEN BACK TO THEIR OLD VALUES,
;;; MARKING THEM AS THEY ARE BOUND, NEVER BINDING ONE
;;; TWICE. WHEN DONE, PUSH A POINTER ON THE SPECPDL
;;; SO THAT AUNBIND CAN RESTORE THINGS CORRECTLY.
;;; [4] SCAN BACK OVER ALL THE ITEMS PUSHED IN STEPS 2
;;; AND 3, RESTORING THE LEFT HALVES OF ALL THE VALUE
;;; CELLS. TURN OFF NOQUIT AND CHECK FOR INTERRUPTS.
;;; ON RETURN, A-LIST LEAVES T NON-ZERO IFF TWO BIND BLOCKS
;;; WERE PUSHED. IT IS UP TO THE CALLER TO MAKE SURE THAT THE
;;; BLOCK(S) ARE UNBOUND CORRECTLY WITH AUNBIND.
;;; NOTE THAT ERRPOP CAN RECOGNIZE THESE SPECIAL BIND BLOCKS AND
;;; CALL AUNBIND TO UNBIND THEM. THIS IS BECAUSE THE LAST WORD
;;; PUSHED HAS ZERO IN THE LEFT HALF.
ALIST: SKIPN C,-1(P) ;MAKE COPY OF ENVIRONMENT GIVEN A-LIST
ALST1: JUMPE C,ALST3 ;STEP 1 - ERROR CHECKING
CAIN C,TRUTH
JRST ALST3 ;T AND NIL ARE VALID A-LISTS
SKOTT C,LS
JRST ALST2 ;NOPE - GO CHECK IT OUT
HLRZ AR1,(C) ;YUP - CHECK ITS CAR
HRRZ C,(C)
SKOTT AR1,LS
JRST ALST0
HLRZ A,(AR1)
SKOTT A,SY
JRST ALST0
CAIN A,TRUTH
JRST ALST0
HLRZ AR1,(A)
HRRZ B,(AR1)
MOVEI AR1,QUNBOUND
CAIN B,SUNBOUND
JSP T,.SET1
JRST ALST1
ALST2: TLNN TT,FX ; - DARN WELL BETTER BE A FIXNUM
JRST ALST0
HRRZ TT,(C) ;MUST BE A VALID SPECPDL POINTER
CAML TT,ZSC2
CAILE TT,(SP)
JRST ALST0
ALST3: HLLOS NOQUIT ;TURN ON NOQUIT - MUSTN'T INTERRUPT
HLLOS MUNGP ;ABOUT TO MUNG VALUE CELLS!
MOVEM SP,SPSV ;STEP 2 - PUSH BLOCK FOR TRUE A-LIST
SETZ T, ;T WILL BECOME NON-ZERO IF TRUE
SKIPN C,-1(P) ; A-LIST IS PRESENT AT ALL
ALST3A: JUMPE C,ALST4 ;NIL FOUND
CAIN C,TRUTH
JRST ALST7 ;T FOUND
SKOTT C,LS
JRST ALST4A ;FIXNUM FOUND
HLRZ B,(C)
HRRZ C,(C)
HLRZ A,(B) ;A HAS ATOMIC SYMBOL
HRRZ AR1,(B) ;AR1 HAS ASSOCIATED VALUE
HLRZ B,(A)
HRRZ A,(B)
SKIPGE AR2A,(A) ;SKIP UNLESS VALUE CELL MARKED
JRST ALST3A ;VALUE CELL ALREADY REBOUND
HRLI AR2A,(A) ;PUSH <VALUE CELL,,CURRENT VALUE>
PUSH SP,AR2A ; ONTO SPECPDL; THEN INSTALL
HRROM AR1,(A) ; VALUE FROM ENVIRONMENT, MARKING CELL
AOJA T,ALST3A ;T NON-ZERO => WE PUSHED SOMETHING
ALST4: MOVEI C,SC2 ;NIL => TOP LEVEL ENVIRONMENT
ALST4A: HRRZ C,(C) ;FIXNUM => SPECIFIED ENVIRONMENT
HRRZ B,SPSV
JUMPE T,ALST4C ;IF ANYTHING PUSHED, START NEW BLOCK
PUSH SP,-1(P) ;LEFT HALF BETTER BE ZERO!
PUSH SP,SPSV ;FINISH OFF BLOCK FOR TRUE A-LIST
MOVEM SP,SPSV ;START NEW BLOCK FOR FUNARG POINTER
ALST4C: MOVEI TT,(C) ;STEP 3 - SCAN SPECPDL FROM ENVIRONMENT
ALST5: CAIN TT,(B) ; BACK UP TO POINT WHEN ALIST CALLED
JRST ALST6
HRRZ AR1,(TT) ;GET VALUE FROM SPECPDL
CAMGE AR1,ZSC2 ;IGNORE SPECPDL POINTERS
JRST ALST5A
CAIGE AR1,(SP)
AOJA TT,ALST5
ALST5A: HLRZ A,(TT) ;GET VALUE CELL FROM SLOT
JUMPE A,AL5AB ;IGNORE FROBS ALIST PUSHES!
CAIE A,PWIOINT ;WHAT A LOSER -- DON'T MESS WITH THIS!
SKIPGE AR2A,(A) ;IGNORE MARKED VALUE CELLS
AL5AB: AOJA TT,ALST5
HRLI AR2A,(A) ;ELSE PUSH AS BEFORE
PUSH SP,AR2A
HRROM AR1,(A)
AOJA TT,ALST5
ALST7: HRRZ C,-1(P) ;T => CURRENT ENVIRONMENT
SETZ T, ;ONLY ONE BLOCK PUSHED
HRRZ B,SPSV
ALST6: PUSH SP,C ;STEP 4 - RESTORE VALUE CELLS
ALST6A: CAIN B,(SP)
JRST ALST7A
HLRZ A,(B)
JUMPE A,ALST6B
CAMGE A,ZSC2
HRRZS (A)
ALST6B: AOJA B,ALST6A
ALST7A: PUSH SP,SPSV ;CLOSE BIND BLOCK
HLLZS MUNGP ;VALUE CELLS UNMUNGED
JRST CZECHI ;ALL DONE - CHECK INTERRUPTS
;;; AUNBIND UNDOES A FUNARG BIND BLOCK PUSHED BY ALIST.
;;; IT DOES SO BY SCANNING UP THE SPECPDL FROM THE POINT OF
;;; THE FUNARG ENVIRONMENT, OR BY SCANNING DOWN THE TRUE A-LIST,
;;; CLOBBERING CURRENT VALUNBIND UNDOES A FUNARG BIND BLOCK PUSHED BY ALIST.
;;; IT DOES SO BY SCANNING UP THE SPECPDL FROM THE POINT OF
;;; THE FUNARG ENVIRONMENT, OR BY SCANNING DOWN THE TRUE A-LIST,
;;; CLOBBERING CURRENT VALUES FROM VALUE CELLS INTO SPECPDL
;;; SLOTS OR A-LIST SLOTS AS APPROPRIATE, SO THAT ANY SETQ'S
;;; DONE IN THE CREATED COPY OF THE ENVIRONMENT WILL BE
;;; REFLECTED IN THE ORIGINAL ENVIRONMENT.
AUNBIND:
POP SP,T
AUNBN0: MOVEM TT,UNBND3
MOVEM D,AUNBD
MOVEM R,AUNBR
MOVEM F,AUNBF
MOVEI F,1(T)
HRRZ R,(SP)
CAMGE R,ZSC2
JRST AUNBN4
AUNBN1: CAIN F,(SP) ;CLOBBER SETQ'S BACK INTO SPECPDL
JRST AUNBN3
HLRZ D,(F)
AUNBN2: HLRZ TT,(R)
CAIE TT,(D)
AOJA R,AUNBN2
HRRZ TT,(TT)
HRRM TT,(R)
AOJA F,AUNBN1
AUNBN3: MOVE F,AUNBF
MOVE R,AUNBR
MOVE D,AUNBD
SUB SP,R70+1
JRST UNBND0
AUNBN4: ;CLOBBER SETQ'S BACK INTO TRUE A-LIST
AUNBN5: CAIN F,(SP)
JRST AUNBN3
HLRZ D,(F)
JRST AUNBN7
AUNBN6: HRRZ R,(R)
AUNBN7: HLRZ TT,(R)
HLRZ TT,(TT)
HLRZ TT,(TT)
HRRZ TT,(TT)
CAIE TT,(D)
JRST AUNBN6
HLRZ TT,(R)
HRRZ D,(D)
HRRM D,(TT)
AOJA F,AUNBN5
IAP4A: MOVEM TT,R ;AT THIS POINT, WE MAKE UP AN
HRROI TT,(SP)
JSP T,FIX1A
PUSH P,A
MOVE TT,R
MOVNI R,2
MOVNI T,1
JRST IAP5
APFNG: HRRZ A,(B) ;APPLY FUNARG
HLRZ B,(B)
HRRM B,(C)
PUSH P,A
MOVEM T,APFNG1
PUSHJ P,ALIST
PUSH P,.
HRROI TT,-2(P)
MOVE D,APFNG1
POP TT,2(TT)
AOJLE D,.-1
CAUNBIND:
MOVEI D,AUNBIND
MOVEM D,2(TT)
SKIPN T
MOVEI D,CPOPJ
MOVEM D,1(TT)
MOVE T,APFNG1
JRST IAPPLY
APLBL: HLRZ A,(B)
HRRZ B,(B)
HLRZ AR1,(B)
MOVEM AR1,(C)
MOVEM SP,SPSV ;APPLY LABEL EXPRESSION
PUSHJ P,BIND
PUSHJ P,ABIND3
MOVEI A,APLBL1
EXCH A,-1(C)
HLLM A,-1(C)
PUSH FXP,A
JRST IAPPLY
APLBL1: PUSHJ P,UNBIND
POPJ FXP,
SUBTTL LISTIFY, PNPUT, AND PNGET
LISTIFY:
SKIPN R,ARGLOC
JRST LFYER
JSP T,FXNV1 ;LISTIFY UP N ARGS FOR AN LSUBR
MOVM D,TT
CAMLE D,@ARGNUM
JRST LFY0
JUMPGE TT,LFY3
ADD R,@ARGNUM
SUBI R,(D)
LFY3: HRLOI TT,(D) ;SEE HAKMEM (A.I. MEMO 239) ITEM 156
EQVI TT,(R) ;TT GETS <-N-1>,,<CONTENTS OF ARGLOC>
AOBJP TT,FALSE ;ZERO ARGS
PUSH P,R70
MOVEI R,(P) ;T HOLDS LAST POINTER
LFY1: MOVE A,(TT) ;GET ARG
JSP T,PDLNMK
PUSHJ P,NCONS
HRRM A,(R) ;CLOBBER ONTO END OF LIST
MOVEI R,(A) ;ADVANCE LAST POINTER
AOBJN TT,LFY1
JRST POPAJ
PNPUT: JUMPE B,SYCONS
PUSH P,A
SETZM LPNF
JRST INTRN1
$PNGET: PUSHJ P,PNGET
MOVE C,A
JSP T,FXNV2
MOVEI B,0
CAIN TT+1,7
POPJ P,
CAIE TT+1,6
LERR [SIXBIT \FEATURE NOT YET IMPLEMENTED - PNGET!\]
TDZA D,D
$PNG.R: PUSHJ P,CONSFX
SETZ TT,
MOVE R,[440600,,TT]
$PNG3: TLNN D,760000
JRST $PNG.D
$PNG3A: TLNN R,740000
JRST $PNG.R
$PNG4: ILDB T,D ;GET NEXT ASCII BYTE
JUMPE T,$PNGX
CAIGE T,140 ;CHECK FOR LOWER-CASE
ADDI T,40 ;CONVERT, AND STORE
IDPB T,R
JRST $PNG3
$PNG.D: JUMPE C,$PNGX
HLRZ F,(C) ;CONSTRUCT WORD OF ASCII, AND BPTR THERETO
MOVE F,(F)
HRRZ C,(C)
MOVE D,[440700,,F]
JRST $PNG3A
$PNGX: JUMPE TT,.+2
PUSHJ P,CONSFX
JRST NREVERSE
SUBTTL EXAMINE, DEPOSIT, MAKNUM, MUNKAM
DEPOSIT: ;FIRST ARG IS FIXNUM ADDRESS, 2ND IS VALUE
EXCH A,B
JSP T,FXNV2 ;GET ADR INTO TT+1
JSP T,FLTSKP ;GET DATA INTO TT
JFCL
MOVEM TT,(TT+1) ;PERFORM DEPOSIT
JRST TRUE
EXAMINE:
PUSH P,CFIX1
JSP T,FXNV1
MOVE TT,(TT)
POPJ P,
MAKNUM: MOVEI TT,(A)
JRST FIX1
MUNKAM: JSP T,FXNV1
MOVEI A,(TT)
POPJ P,
SUBTTL SLEEP, ALARMCLOCK
;;; (SLEEP <N>) SLEEPS FOR <N> SECONDS. <N> MAY BE A FIXNUM OR FLONUM.
$SLEEP: JSP T,FLTSKP ;SUBR 1
IFN ITS\D20,[
JSP T,M30.
FMPR TT,[TMCNST]
JSP T,IFIX
IT$ .SLEEP TT, ;ITS -- SLEEP FOR <TT> 30TH'S OF A SECOND
IFN D20,[
SPECPRO INTSLP ;D20 -- SLEEP FOR <TT> MILLISECSONDS
MOVE 1,TT ; (A) WE WANT TO ALLOW INTERRUPTS TO GO THROUGH
DISMS ; (B) WE MUST BEWARE OF CRUD IN AC 1
XCTPRO
SETZ 1,
NOPRO
] ;END OF IFN D20
] ;END IFN ITS\D20
IFN D10,[
CAIA
JSP T,IFIX
SLEEP TT, ;SLEEP FOR <TT> SECONDS
] ;END IFN D10
JRST TRUE
IFN ITS,[
ALARMCLOCK:
EXCH A,B
SETO TT,
CAIE B,Q$RUNTIME
JRST ALCK1
JUMPE A,ALCK3 ;NIL => TURN OFF CLOCK
JSP T,FLTSKP ;RUN TIME IN MICROSECONDS,
JRST .+2 ; ACCURATE TO 4. USEC JIFFIES
JSP T,IFIX
ASH TT,-2
ALCK3: .SUSET [.SRTMR,,TT]
ALCK4: JUMPL TT,FALSE
JRST TRUE
ALCK1: CAIE B,Q$TIME
JRST ALCK0
JUMPE A,ALCK5 ;NIL => TURN OFF CLOCK
JSP T,FLTSKP ;REAL TIME IN SECONDS,
JSP T,M30. ; ACCURATE TO 30TH'S
FMPRI TT,(TMCNST)
JSP T,IFIX
ASH TT,1
ALCK5: MOVSI R,400000
JUMPL TT,ALCK2
JUMPN TT,ALCK7
MOVEI TT,1 ;IF 0 SPECIFIED, USE 1/30 SECOND
ALCK7: MOVE R,[600000,,TT]
ALCK2: .REALT R,
JRST ALCK4
] ;END OF IFN ITS
IFN ITS\D20,[
M30.: IMULI TT,TMXCNST ;NOTE: DOUBLE SKIP RETURN
JRST 2(T)
] ;END IFN ITS\D20
SUBTTL REMOB, ARG, SETARG
REMOB: JSP T,SPATOM ;SUBR 1 - REMOVE ATOMIC SYMBOL FROM OBARRAY
JSP T,PNGE ;ERROR IF ARG NOT A SYMBOL
LOCKI
PUSHJ P,INTERN
JRST REMOB7
REMOB2: LOCKI
REMOB7: EXCH A,B ;OBTBL BUCKET # SHOULD BE IN TT
MOVE R,TT
HRRZ D,VOBARRAY
HRRI TT,@TTSAR(D)
PUSHJ P,ARYGT4
HLRZ T,(A)
CAIN T,(B)
JRST REMOB1
REMOB3: MOVE D,A
HRRZ A,(A)
HLRZ T,(A)
CAIE T,(B)
JRST REMOB3
HRRZ T,(A)
HRRM T,(D)
REMOB4: HLRZ TT,(B) ;LEAVE ATOM HEADER IN T
HRRZ TT,1(TT) ;LEAVE PNAME LINK IN TT
JSP T,GCP8L ;CHECK TO SEE THAT SCOS ARE REMOVED FROM SCO TABLE.
SETZB A,B
UNLKPOPJ
REMOB1: HRRZ A,(A)
JSP T,.STOR0
JRST REMOB4
ARG: JUMPE A,ARG3 ;SUBR 1 - FETCH LSUBR ARGUMENT
ARGXX: JSP R,ARGCOM
HRRZ A,(D)
JRST PDLNKJ
ARG3: SKIPN ARGLOC ;(ARG NIL) RETURNS NUMBER OF LSUBR ARGUMENTS
JRST ARGCM1
HRRZ A,ARGNUM
JRST PDLNKJ
SETARG: JSP R,ARGCOM ;SUBR 2 - SET LSUBR ARGUMENT
MOVE A,B
JSP T,PDLNMK
HRRM A,(D)
POPJ P,
ARGCOM: SKIPN D,ARGLOC
JRST ARGCM0
JSP T,FXNV1
JUMPLE TT,ARGCM8
CAMLE TT,@ARGNUM
JRST ARGCM8
ADD D,TT
JRST (R)
SUBTTL P.$X AND FRIENDS
SBSYM: JSR POFF ;FIND SUBR NAME (ADR IN RH OF .)
VCLSYM: JSR POFF ;FIND ATOM FOR VC (ADR IN LH OF .)
VCSYM: JSR POFF ;FIND ATOM FOR VALUE CELL
TLSYM: JSR POFF ;PRINT ST ENTRY OF LEFT HALF OF A CELL
TSYM: JSR POFF ;ST ENTRY OF RIGHT HALF
PLSYM: JSR POFF ;PRINT LEFT HALF OF A CELL
PSYM: JSR POFF ;PRINT RIGHT HALF OF A CELL
POF: JSR POFF ;PRINT ARG (POINTER AT LOC 40)
TOF: JSR POFF ;ST ENTRY OF ARG (POINTER IN 40)
IT$ P%OFF: JSR POFF ;FOR % TYPEOUT MODE IN DDT
;POFF: 0
PSYM1: SETOM PSYMF
MOVEM T,PSMTS ;P.$X, DONE IN DDT,
MOVEM R,PSMRS ; WILL PRINT CONTENTS
MOVEI T,LPSMTB ; OF CURRENT OPEN CELL
MOVE R,@PSMTB-1(T) ; IN LISP FORMAT.
MOVEM R,PSMS-1(T)
SOJN T,.-2
IFE ITS,[
10$ HRRZ T,.JBDDT"
10$ HRRZ T,@6(T) ;WHAT A KLUDGE! 6?!!
20$ MOVEI T,60 ;TERRIBLE KLUDGE! 60
10$ CAIG R,POF
MOVEM T,PS.S
] ;END OF IFE ITS
HRRZ T,POFF
PUSH P,CPSYMX
JSP T,ERSTP
MOVEM P,ERRTN
HRRZ R,POFF
IFN ITS,[
MOVEI T,40
MOVEM T,PS.S
MOVEI T,THIRTY+7
CAIN R,P%OFF+1
MOVEM T,PS.S
CAIG R,POF
.BREAK 12,PSMST
] ;END OF IFN ITS
JSP T,SPECBIND
TTYOFF
TAPWRT
V.RSET
IFN USELESS, SETZM TYOSW
HRRZ AR1,V%TYO ;UPDATE OUR NOTION OF THE
MOVE T,ASAR(AR1)
MOVE TT,TTSAR(AR1)
TLNE T,AS.SFA+AS.FIL
TLNN TT,TTS.TY
JRST PSYM2
PUSHJ P,TTYBR1 ; LINENUM AND CHARPOS OF THE TTY,
MOVEI TT,AT.LNN ; SINCE DDT HAS SCREWED IT ALL UP.
HLRZM D,@TTSAR(AR1)
MOVEI TT,AT.CHS
HRRZM D,@TTSAR(AR1)
;;; FALLS THRU
;;; FALLS IN
PSYM2: MOVE T,PSMTS ;AT THIS POINT ALL ACS WILL HAVE BEEN
MOVE R,PSMRS ; RESTORED SO THAT MOVE A,@ WILL WORK.
MOVE A,PSMS
MOVE AR1,PSMS+AR1-A
MOVE A,@PS.S ;THUS THIS STUFF WORKS IF . IS AN AC.
HRRZ T,POFF
IT$ CAIN T,P%OFF+1
IT$ JRST PSYMP1
CAIN T,POF+1
MOVEI T,PSYM+1
CAIN T,TOF+1
MOVEI T,TSYM+1
SUBI T,SBSYM
TRNE T,1
TLZA A,-1
HLRZS A
LSH T,-1
JRST .+1(T)
JRST PSYMSB ;SB.$X
JRST PSYMVC ;VC.$X AND VCL.$X
JRST PSYMT ;T.$X AND TL.$X AND TP FOO$X
PSYMP: PUSHJ P,PRIN1 ;P.$X AND PL.$X AND PP FOO$X
PSYMQ: MOVEI A,TRUTH ;RETURN POINT TO GET OUT OF PSYM1
JRST ERR2
PSYMX: MOVEI T,LPSMTB
MOVE R,PSMS-1(T)
MOVEM R,@PSMTB-1(T)
SOJN T,.-2
MOVE T,PSMTS
MOVE R,PSMRS
SETZM PSYMF
CPSYMX: POPJ P,PSYMX
IFN ITS,[
PSYMP1: TLNN A,-1 ;LISP MODE TYPEOUT - HACK TWO HALVES
JRST PSYMP
PUSH P,A
HLRZ A,A
PUSHJ P,PRIN1
MOVEI A,", ;SEPARATE HALVES WITH ",,"
REPEAT 2, PUSHJ P,TYO
POP P,A
TLZ A,-1
JRST PSYMP
] ;END OF IFN ITS
PSYMSB: MOVEI B,(A)
PUSHJ P,ERRADR ;ERRADR DOES ALL THE DIRTY WORK!
JRST PSYMQ
FCN.B: SKIPE NOQUIT ;FAKE CONTROL-B INTERRUPT FROM DDT
POPJ P,
SKIPGE INTFLG
POPJ P,
;;; FALLS THRU
;;; FALLS IN
PUSH FXP,D
MOVE D,INHIBIT ;CROCK SO THAT A .5LOCKI
AOJE D,POPXDJ ; WON'T STOP US
PUSH FXP,INHIBIT
SETZM INHIBIT
MOVE D,[TTYIFA,,400000+^B]
PUSHJ P,UINT
POP FXP,INHIBIT
POP FXP,D
POPJ P,
TOF1: SKIPA T,[TOF]
POF1: MOVEI T,POF
PUSH P,UUOH
EXCH T,UUTSV
JRST @UUTSV
PSYMVC: MOVEI T,(A)
MOVEI A,QUNBOUND
CAIN T,SUNBOUND
JRST PSYMP
SKOTT T,LS
JRST PSVC1
JSP R,GCGEN
PSVC2
PSVC1: MOVEI A,QM
JRST PSYMP
PSVC2: HLRZ A,(D)
HLRZ B,(A)
HRRZ A,(B)
CAIN A,(T)
JRST PSVC3
HRRZ D,(D)
JUMPN D,PSVC2
JRST GCP8A
PSVC3: HLRZ A,(D)
JRST PSYMP
;;; TABLE OF CELLS TO SAVE OVER THE PSYM FUNCTIONS
ZZ==. ;BE SURE TO SEE PSMS IF YOU CHANGE THIS TABLE
PSMTB: ;ACCUMULATOR A MUST BE THE FIRST ITEM, AND AR1 THE FOURTH
IRP FOO,,[A,B,C,AR1,AR2A,TT,D,F,40,UUOH,UUTSV,UUTTSV,UURSV,ERBDF,FPTEM]
FOO
TERMIN
IFN USELESS,[
PRINLV
TYOSW
ABBRSW
] ;END OF IFN USELESS
LPSMTB==.-ZZ ;FPTEM AND PCNT ARE SAME LOCATION
IT$ PSMST: 4,,PS.S-1 ;READ VALUE OF . FROM DDT WITH .BREAK 12,
; PP - A UUO ;PP IS FOR PRINTING OUT AN ADDRESS AS AN S-EXPRESSION:
;PP 34722$X IN DDT WILL PRINT OUT 34722 AS A
; POINTER IN LIST FORMAT.
; TP - A UUO ;TP IS LIKE PP BUT NICELY PRINTS ST ENTRY FOR
; THAT CELL
P.=PUSHJ P,PSYM ;P.$X IS LIKE PP FOO$X WHERE FOO IS RH OF.
PL.=PUSHJ P,PLSYM ;LIKE P., BUT FOR LH OF CURRENT CELL
IT$ P%=PUSHJ P,P%OFF ;LIKE P., BUT AS A DDT TYPEOUT MODE
VC.=PUSHJ P,VCSYM ;FIND NAME OF VALUE CELL RH OF . ADDRESSES
VCL.=PUSHJ P,VCLSYM ;A CROSS BETWEEN VC. AND PL.
T.=PUSHJ P,TSYM ;A CROSS BETWEEN P. AND TP
TL.=PUSHJ P,TLSYM ;A CROSS BETWEEN PL. AND TP
SB.=PUSHJ P,SBSYM ;FIND NAME OF SUBR ADDRESSED BY RH OF .
BB=PUSHJ P,FCN.B ;FAKE CONTROL-B INTERRUPT FROM DDT
SUBTTL T.$X AND TBLPUR$X STUFF
PSYMT: PUSHJ P,ITERPRI ;T.$X TYPEOUT, ETC.
MOVEI TT,(A)
ROT TT,-SEGLOG
MOVE TT,ST(TT)
SETZB T,C
MOVNI R,22
PSYMT1: LSHC T,1
TRZN T,1
JRST PSYMT3
MOVEI A,"+
TROE C,1
PUSHJ P,TYO
MOVEI B,PSYMTT+22(R)
CAIL B,PSYMTT+PSYMTL
MOVEI B,[ASCII \??\]
HRLI B,440700
PSYMT2: ILDB A,B
JUMPE A,PSYMT3
PUSHJ P,TYO
JRST PSYMT2
PSYMT3: AOJL R,PSYMT1
MOVEI A,",
REPEAT 2, PUSHJ P,TYO
HLRZ A,TT
PUSHJ P,PRINC
JRST PSYMQ
.SEE LS ;THIS TABLE SHOULD BE KEPT CONSISTENT
.SEE ST ; WITH TWO OTHER PLACES
PSYMTT:
IRP TP,,[LS,$FS,FX,FL,BN,SY,SA,VC,$PDLNM,??,$XM,$NXM,PUR,HNK,DB,CX,DX]
ASCII \TP\
TERMIN
PSYMTL==.-PSYMTT
SUBTTL PURIFYG ROUTINE
IFN ITS,[
XPURIFY: ;ENTRY POINT TO SETUP A PURQIX
MOVE T,[SIXBIT \PURQIX\];CHANGE SYSFN1 TO BE A PURQIX
MOVEM T,SYSFN1
MOVE T,[SIXBIT \DSK\] ;NEW DEVICE NAME
MOVEM T,SYSDEV
MOVE T,[SIXBIT \LSPDMP\] ;AND FINALLY, NEW SNAME
MOVEM T,SYSSNM
MOVEI T,FEATEX ;SPLICE 'EXPERIMENTAL' INTO FEATURES LIST
MOVEM T,FEATURES
] ;END IFN ITS
IFN ITS+D20,[
PURIFY:
IFN ITS,[ ;DOESN'T REALLY WORK FOR D10 YET
JRST NOTINIT ;CLOBBERED BY INIT TO "SETO AR1,"
;SETO AR1, ;FOR PURIFY$G FROM DDT
MOVE P,[-LFAKP-1,,FAKP-1]
PUSHJ P,FPURF7
PUSHJ P,FPURF2
.VALUE [ASCIZ \:PURIFIED
\]
JRST .-1
] ;END OF IFN ITS
FPURF2: SETZB TT,PRSGLK ;ZERO PURE SEGMENT AOBJN PTR
MOVE R,[NPFFS,,NPFFS+1] ;ZERO PURE FREE STORAGE COUNTERS
SETZM NPFFS
BLT R,NPFFY2
SETZM LDXLPC ;CLEAR # WORDS FREE SO ALWAYS GRAB NEW SET
; OF SEGMENTS THE FIRST TIME A LINK IS NEEDED
; START NEW LIST OF SEGMENTS
SETOM LDXPFG ;SET PURE FLAG
20$ HRLI TT,.FHSLF
MOVNI R,NPAGS ;SO STEP THROUGH LOSING PURTBL
MOVE D,[440200,,PURTBL] ; TO DECIDE HOW TO MUNG PAGES
IPUR1: ILDB T,D ;GET BYTE FOR NEXT PAGE
JRST .+1(T)
JRST IPUR3 ;0 - DELETE
JRST IPUR4 ;1 - IMPURIFY
JRST IPUR6 ;2 - PURIFY
MOVEI T,NPAGS(R) ;3 - HAIRY STUFF - DECODE FURTHER
LSH T,PAGLOG
CAMGE T,BPSL ;CODE 3 SHOULD NEVER APPEAR
.VALUE ; BELOW BINARY PROGRAM SPACE
MOVE F,@VBPORG ;PAGIFY CURRENT VALUE OF
ANDI F,PAGMSK ; BPORG DOWNWARD
CAIGE T,(F) ;ANY CODE 3 PAGE BELOW THAT CAN
JRST IPUR6A ; BE PURIFIED
CAMG T,BPSH ;ANY CODE 3 PAGE BETWEEN BPORG
JRST IPUR2 ; AND BPSH IS LEFT AS IS
CAMG T,HINXM ;ANY PAGE BETWEEN BPSH AND HINXM
.VALUE ; DAMN WELL BETTER BE 0!!!
HRRZ F,PDLFL1 ;ANYTHING BETWEEN HINXM AND
LSH F,PAGLOG ; PDLS MUST BE PURE FREE STORAGE
CAIGE T,(F)
JRST IPUR6A
CAIGE T,BSCRSG ;SCRATCH PAGES ARE IGNORED
JUMPL AR1,IPUR3A ;PDL PAGES MAY OR MAY NOT BE FLUSHED, DEPENDING ON AR1
IPUR2:
IT$ ADDI TT,1001
20$ ADDI TT,1
TLNN D,730000 ;ONLY 20 2-BIT BYTES PER WORD, NOT 22
TLZ D,770000
AOJL R,IPUR1
20$ SETZB B,C ;ZERO OUT CRUD
MOVEI A,TRUTH
JUMPGE AR1,CPOPJ
MOVE T,[STDMSK]
MOVEM T,IMASK
IT$ MOVE T,[STDMS2]
IT$ MOVEM T,IMASK2
POPJ P,
;;; IFN ITS+D20
;;; VARIOUS PAGE FLUSHING AND PURIFYING ROUTINES FOR PURIFY
IPUR4: ;MAKE PAGE WRITABLE
IFN ITS,[
.CALL IPUR9 ;CHECK TYPE OF PAGE
.VALUE
JUMPL T,IPUR2 ;ALREADY IMPURE
IOR TT,[4400,,400000]
JUMPG T,IPUR5
.CBLK TT, ;NON-EXISTENT - GET A FRESH PAGE
.VALUE
JRST IPUR2
IPUR5: TLZ TT,4000 ;PURE - TRY TO DEPURIFY
.CBLK TT,
JSP F,IP1 ;IF WE LOSE, TRY COPYING
JRST IPUR2
IPUR9: SETZ
SIXBIT \CORTYP\
1000,,400(R)
402000,,T
] ;END OF IFN ITS
IFN D20,[
MOVE 1,TT
JSP T,IPURE$ ;MAKE SURE PAGE EXISTS
TLZ 2,-1#(PA%RD+PA%WT+PA%EX+PA%CPY)
TLNE 2,(PA%WT) ;SKIP IF NOT ALREADY WRITEABLE
JRST IPUR2
TLON 2,(PA%CPY) ;SKIP IF ALREADY COPYABLE
SPACS
JRST IPUR2
;ARG IN A IS PAGE NUMBER. PRESERVE A,TT,D,R
;MAKE SURE PAGE EXISTS. IF NOT, CREATE SOME 0'S
;LEAVE RESULT OF RPACS IN B, AND PUT .FHSLF IN LH OF A
IPURE$: HRLI A,.FHSLF
RPACS
TLNE B,(PA%PEX)
JRST (T)
HRL T,A ;SAVE PAGE NUMBER IN LH OF T
MOVE F,B ;SAVE RPACS CALL IN F
MOVSI B,.FHSLF ;SOURCE PAGE IS 0, WHICH MUST EXIST
EXCH A,B
MOVSI C,(PM%RD+PM%CPY)
PMAP ;MAKE FOOOLISH PAGE EXIST
LSH B,9 ; [WHICH PROBABLY GOT LOST BY
HRLI B,1(B) ; THE "SAVE" COMMAND] BY COPYING
MOVEI C,777(B) ; THE FIRST PAGE OF THE JOB
SETZM (B)
MOVSS B
BLT B,(C) ;FOO! A PAGE OF 0'S
MOVE B,F
HLR A,T
HRLI 1,.FHSLF
JRST (T)
] ;END OF IFN D20
;MAKE PAGE READ-ONLY
IPUR6A: MOVEI T,2 ;CHANGE PURTBL ENTRY TO 2
DPB T,D
IPUR6:
IFN ITS,[
.CALL IPUR9 ;CHECK TYPE OF PAGE
.VALUE
JUMPG T,IPUR2 ;ALREADY PURE
JUMPE T,IPUR7 ;CAN'T PURIFY A NON-EXISTENT PAGE
TLZ TT,4400 ;PURIFY AN IMPURE PAGE
TRO TT,400000
.CBLK TT,
IPUR7: .VALUE
JRST IPUR2
] ;END OF IFN ITS
IFN D20,[
MOVE 1,TT
JSP T,IPURE$ ;MAKE SURE PAGE EXISTS
TLZ 2,-1#(PA%RD+PA%WT+PA%EX+PA%CPY)
TLZE 2,(PA%WT+PA%CPY) ;ALREADY READ-ONLY?
SPACS
JRST IPUR2
] ;END OF IFN D20
;DELETE A PAGE
IPUR3A: SKIPE NOPFLS ;NOPFLS NON-ZERO => DON'T FLUSH PAGES
JRST IPUR2
DPB NIL,D ;ZERO OUT PURTBL ENTRY
IPUR3:
IFN ITS,[
TRZ TT,400000
.CBLK TT,
.VALUE
] ;END OF IFN ITS
IFN D20,[
SETO 1,
MOVE 2,TT
HRLI 2,.FHSLF
SETZ 3,
PMAP
] ;END OF IFN D20
JRST IPUR2
] ;END OF IFN ITS+D20
SUBTTL PURE COPY OF THE READ SYNTAX TABLE
-1,,0 ;FOR NEWRD WILL POINT TO MACRO CHAR LIST
RSXTB2: PUSH P,CFIX1
JSP TT,1DIMF
NIL ;SHOULD NEVER ACTUALLY CALL
0
RCT0:
IFE NEWRD,[ ;OLD VERSION OF PURE READTABLE
IFN SAIL,[
400500,,0 ;NULL IS IGNORED
REPEAT 10, 2,,1+.RPCNT ;SAIL CHARS
500500,,^I ;TAB
500500,,^J
400500,,^K
400500,,^L
500500,,^M ;CR
REPEAT 22, 2,,^N+.RPCNT ;SAIL CHARS
] ;END IFN SAIL
.ELSE,[
REPEAT 10, 400500,,.RPCNT ;^@ ^A ^B ^C ^D ^E ^F ^G
2,,^H ;^H
500500,,^I ;TAB
400500,,^J ;LINE-FEED
400500,,^K
400500,,^L
500500,,^M ;CARRIAGE-RETURN
REPEAT 3, 400500,,^N+.RPCNT ;^N ^O ^P
IT$ 405540,,QCTRLQ ;^Q watch out for XON/XOFF
IT% 400500,,^Q ;^Q protocol under TOPS systems
400500,,^R ;^R
IT$ 405540,,QCTRLS ;^S watch out for XON/XOFF
IT% 400500,,^S ;^S protocol under TOPS systemTs
REPEAT 7, 400500,,^T+.RPCNT ;WORTHLESS
2,,33 ;ALT MODE
REPEAT 4, 400500,,^\+.RPCNT ;WORTHLESS
] ;END IFE SAIL
500500,,40 ;SPACE
2,,41 ;!
404500,,QRDDBL ;"
404540,,QRDSHP ;#
REPEAT 3, 2,,"$+.RPCNT ;$ % &
404500,,QRDQTE ;'
440500,,"( ;(
410500,,") ;)
2,,"* ;*
10,,"+ ;+
404500,,QI%C%F ;, (INTERNAL-COMMA-FUN)
50,,"- ;-
420700,,". ;.
402500,,"/ ;/
REPEAT 10., 4,,"0+.RPCNT ;DECIMAL DIGITS
2,,": ;:
404540,,QRDSEMI ;;
REPEAT 5, 2,,"<+.RPCNT ;< = > ? @
REPEAT 26., 1,,"A+.RPCNT ;ALPHABETIC
REPEAT 3, 2,,133+.RPCNT ;SQUARE BRACKTES
22,,"^ ;CARET
62,,"_ ;UNDERSCORE
404500,,QI%B%F ;GRAVE (INTERNAL-BACKQUOTE-FUN)
REPEAT 26., 501,,"A+.RPCNT ;SMALL LETTERS
2,,173 ;LEFT BRACE
404500,,QRDVBAR ;VERTICAL BAR
REPEAT 2, 2,,175+.RPCNT ;RIGHT BRACE, TILDE
401500,,177 ;RUBOUT
IFN .-RCT0-200, WARN [READTABLE LOSSAGE]
402500,,57 ;PSEUDO SLASHIFIER CHARACTER
440500,,50 ;PSEUDO OPEN PARENS
410500,,51 ;PSEUDO CLOSE PARENS
500540,,40 ;PSEUDO SPACE
IFN SAIL,[
REPEAT 74, 400500,,204+.RPCNT ;SAIL CONTROLIFIED FUNNY CHARACTERS
REPEAT 2, 400500,,300+.RPCNT ;^@ ^A
400500,,302 ;^B
REPEAT 5, 400500,,300+.RPCNT ;^C ^D ^E ^F ^G
2,,300+^H ;^H
500500,,300+^I ;TAB
500500,,300+^J ;LINE-FEED
400500,,300+^K
400500,,300+^L
500500,,300+^M ;CARRIAGE-RETURN
REPEAT 3, 400500,,300+^N+.RPCNT ;^N ^O ^P
405540,,QCTRLQ ;^Q
400500,,300+^R ;^R
405540,,QCTRLS ;^S
REPEAT 7, 400500,,300+^T+.RPCNT ;WORTHLESS
2,,33 ;ALT MODE
REPEAT 444, 400500,,300+^\+.RPCNT ;WORTHLESS
IFN .-RCT0-1000, WARN [SAIL RCT0 LOSSAGE -- WRONG LENGTH TABLE]
] ;END IFN SAIL
] ;END OF IFE NEWRD
;;; MORE ON NEXT PAGE
IFN NEWRD,[ ;NEW VERSION OF PURE READTABLE
REPEAT 11, RS.BRK+RS.SL1+RS.SL9 + .RPCNT ;WORTHLESS CONTROL CHARS
RS.BRK+RS.SL1+RS.SL9+RS.WSP + ^I ;TAB
RS.BRK+RS.SL1+RS.SL9+RS.WSP+RS.VMO + ^J ;LINE-FEED
RS.BRK+RS.SL1+RS.SL9 + ^K ;^K (WORTHLESS)
RS.BRK+RS.SL1+RS.SL9+RS.VMO + ^L ;^L (WORTHLESS)
RS.BRK+RS.SL1+RS.SL9+RS.WSP + ^M ;CARRIAGE-RETURN
REPEAT 3, RS.BRK+RS.SL1+RS.SL9 + ^N+.RPCNT ;WORTHLESS
RS.BRK+RS.SL1+RS.SL9+RS.MAC+RS.FF + ^Q ;^Q (fun is QCTRLQ)
RS.BRK+RS.SL1+RS.SL9 + ^R ;^R (WORTHLESS)
RS.BRK+RS.SL1+RS.SL9+RS.MAC+RS.FF + ^S ;^S (fun is QCTRLS)
REPEAT 7, RS.BRK+RS.SL1+RS.SL9 + ^T+.RPCNT ;WORTHLESS
RS.XLT + 33 ;ALTMODE
REPEAT 4, RS.BRK+RS.SL1+RS.SL9 + 34+.RPCNT ;WORTHLESS
RS.BRK+RS.SL1+RS.SL9+RS.WSP + 40 ;SPACE
REPEAT 6, RS.XLT + "!+.RPCNT ;! " # $ % &
RS.BRK+RS.SL1+RS.SL9+RS.MAC + "' ;SINGLE-QUOTE
RS.BRK+RS.SL1+RS.SL9+RS.LP + "( ;LEFT PAREN
RS.BRK+RS.SL1+RS.SL9+RS.RP + ") ;RIGHT PAREN
RS.XLT + "* ;ASTERISK
RS.SL1+RS.SGN + "+ ;PLUS
RS.BRK+RS.SL1+RS.SL9+RS.WSP + ", ;COMMA
RS.SL1+RS.SGN+RS.ALT + "- ;MINUS
RS.BRK+RS.SL1+RS.SL9+RS.DOT+RS.PNT + ". ;DOT
RS.BRK+RS.SL1+RS.SL9+RS.SLS + "/ ;SLASH
REPEAT 10., RS.SL1+RS.DIG + "0+.RPCNT ;0 - 9
RS.XLT + ": ;COLON
RS.BRK+RS.SL1+RS.SL9+RS.MAC+RS.ALT + "; ;SEMI-COLON
REPEAT 5, RS.XLT + "< + .RPCNT ;< = > ? @
REPEAT 4, RS.LTR + "A+.RPCNT ;A-D
RS.LTR + RS.SQX + "E ;E
REPEAT 21., RS.LTR + "F+.RPCNT ;F-Z
REPEAT 3, RS.XLT + 133+.RPCNT ;LBRACK BSLASH RBRACK
RS.ARR+RS.XLT + "^ ;UP-ARROW
RS.ARR+RS.ALT+RS.XLT + #_ ;UNDERSCORE
RS.BRK+RS.SL1+RS.SL9+RS.MAC + "` ;BACK-QUOTE
REPEAT 4, RS.LTR + "A+.RPCNT ;A-D L.C.
RS.LTR+RS.SQX + "E ;E L.C.
REPEAT 21., RS.LTR + "F+.RPCNT ;F-Z L.C.
REPEAT 4, RS.XLT + "{+.RPCNT ;LBRACE VBAR RBRACE TILDE
RS.BRK+RS.SL1+RS.SL9+RS.RBO + 177 ;RUBOUT
RS.BRK+RS.SL1+RS.SL9+RS.SLS + "/ ;PSEUDO SLASH
RS.BRK+RS.SL1+RS.SL9+RS.LP + "( ;PSEUDO (
RS.BRK+RS.SL1+RS.SL9+RS.RP + ") ;PSEUDO )
RS.BRK+RS.SL1+RS.SL9+RS.WSP + 40 ;PSEUDO SPACE
] ;END OF IFN NEWRD
TLRCT==<.-RCT0>
SA$ INFORM [READTABLE LENGTH = ]\LRCT
ZZ==LRCT-TLRCT
IFE NEWRD,[
IFL ZZ-1-2, INFORM READER-TABLE-DEFICIENCY,\<3-ZZ>
.ELSE BLOCK ZZ-3
] ;END OF IFE NEWRD
NIL,,NIL ;UNUSED
TRUTH,,0 ;(STATUS TTYREAD),,(STATUS ABBREVIATE)
NIL,,TRUTH ;(STATUS TERPRI),,(STATUS _)
;;; TTYREAD=NIL => ONLY FORCE FEED CHARS LET READ SEE THE TTY BUFFER
;;; ABBREVIATE: 1.1 => ABBREV FILES, 1.2 => ABBREV FLATSIZE/EXPLODE
;;; THE FOLLOWING, "TERPRI", MAY NO LONGER BE ACTIVE: (11/01/79 - JONL)
;;; TERPRI=T => DO NOT OUTPUT AUTOMATIC NEWLINES
;;; _=T => ALLOW PRIN1/PRINC TO OUTPUT FIXNUMS IN FORM M_N
SUBTTL TOP PAGE PGTOP, AND SOME INSRTS
MOVEI 1,[.] ;THIS WASTEFUL HAC IS MERELY TO INSURE THAT THE LAST
MOVEI 2,[.] ;FEW CONSTANTS ON THIS PART ARE WORTHLESS
MOVEI 3,[.] ;IN CASE THERE ARE MORE ON PASS2 THAN PASS1
PGTOP TOP,[TOPLEVEL, COMMON, AND RANDOM STUFF]
;;; HERE IS A SUNDER HAC - IT MUST BE ABLE TO FIND
;;; <LF>$INSRT<SP>NAME<TABS-OR-SPACES>;COMMENTS ON FILE
$INSRT PRINT ;PRINT AND FILE-HANDLING FUNCTIONS
$INSRT ULAP ;UTAPE, LAP, AND AGGLOMERATED SUBRS
$INSRT ARITH ;STANDARD ARITHMETIC FUNCTIONS
;;; REMEMBER THE SUNDER HACK, AND DONT HACK THIS $INSRT
IFN BIGNUM,[
$INSRT BIGNUM ;BIGNUM ARITHMETIC PACKAGE
]
SUBTTL EVAL, EVALHOOK, AND EVAL-WHEN
PGBOT EVL
POP3UB: POPI P,1
POP2UB: POPI P,2
JRST UNBIND
EVALHOOK:
JSP TT,LWNACK
LA23,,QEVALHOOK
MOVE D,T
JSP T,SPECBIND ;BIND "EVALHOOK" TO LAST ARG
-1_33. 0,VEVALHOOK
CAME D,XC-2
JRST EVNH3
PUSH P,[POP2UB]
MOVE A,-2(P)
JRST EVNH0
EVNH3: PUSH P,[POP3UB]
PUSH P,-3(P)
PUSH P,-3(P)
PUSHJ FXP,AEVAL
EVNH0: SKIPN V.RSET ;EVALUATE, BYPASSING HOOK CHECK
JRST EV0 .SEE STORE
JRST EVAL0
OEVAL: JSP TT,LWNACK ;"EXTERNAL" EVAL - LSUBR (1 . 2)
LA12,,QOEVAL ;MAY TAKE ALIST AS SECOND ARG
AOJE T,OEVL1
PUSH P,[POP2J] ;PHOO! HAVE TO KEEP THE SAME EVALFRAME
PUSH P,-2(P) ;
PUSH P,-2(P)
PUSHJ FXP,AEVAL ;MAKE UP ALIST, POP OFF 2, AND LEAVE ARG IN A
JRST EVAL
OEVL1: POP P,A
EVAL: SKIPN V.RSET ;"INTERNAL" EVAL - ARG IN A
JRST EV0
SKIPN B,VEVALHOOK
JRST EVAL0
JSP T,SPECBIND ;SUPER-RANDOM HACK SO THAT MM
VEVALHOOK ; CAN INVENT A ^N FOR LISP
CALLF 1,(B)
JRST UNBIND
EVAL0: SKIPE NIL ;RANDOM PLACE TO CHECK FOR NIL CLOBBERED
PUSHJ P,NILBAD
PUSH P,FXP ;EVAL FRAME FORMAT:
HRLM FLP,(P) ; FLP,,FXP
PUSH P,A ; SP,,<FORM>
HRLM SP,(P) ; $EVALFRAME
PUSH P,[$EVALFRAME] ;SEE APPLY FOR FORMAT OF APPLY FRAMES
.SEE L$EVALFRAME
;FALLS THROUGH
;FALLS IN
;;; EVALUATE A FORM IN A
EV0: JUMPE A,CPOPJ ;NIL => NIL, ALWAYS!!!
MOVEI C,ILIST
SKOTT A,LS
2DIF JRST (TT),EVTB1-1,QLIST .SEE STDISP
IFN HNKLOG,[
TLNE TT,HNK
JRST EV0H ;HUNK?
]; End of IFN HNKLOG,
EV0A: MOVE AR1,(A) ;FUNCTION ON 0(P), place to exit in C
HLRZ T,AR1 ; this routine should put into TT the address
SKOTT T,LS ; of the place to jump for running the code.
2DIF JRST (TT),EVTB2-1,QLIST .SEE STDISP
IFN HNKLOG,[
TLNE TT,HNK ;Hunk?
JRST EVAPH ; Go apply it
EV0ALS:
]; END of IFN HNKLOG,
HLRZ TT,(T)
CAIN TT,QLAMBDA
JRST EXP3
CAIE TT,QFUNARG
CAIN TT,QLABEL
JRST EXP3
JUMPL C,EV3B
SKIPE B,VOEVAL
JCALLF 1,(B) ;EVALSHUNT
HLRZ A,AR1
TLNN C,777740 ;MAYBE SAVE FUNCTION NAME IN EV0B
MOVEM A,EV0B
PUSH P,EV0B ;NON-ATOMIC FUNCTION, NOT LAMBDA,
PUSH P,C ; LABEL, OR FUNARG
PUSH P,AR1
PUSHJ P,EV0 ;SO EVALUATE THE FORM
POP P,AR1
POP P,C
POP P,EV0B
JRST EV4 ;NOW TRY USING THE RESULT AS A FUNCTION
IFN HNKLOG,[
;; Apply a hunk
EVAPH: PUSH P,T
PUSH P,A
MOVE A,T
PUSHJ P,USRHNP ;Maybe this is a user-extended hunk?
MOVE TT,T
POP P,T
POP P,A
JUMPE TT,EV0ALS ;Not ours, just like a list
JRST EXP3
;; Evaluate a hunk
EV0H: PUSHJ P,USRHNP ;Maybe this is a user-extended hunk
JUMPE T,EV0A ;No, go pretend it's a list
PUSH P,A
PUSH P,[QOEVAL]
MOVNI T,2
XCT SENDI ;Let's send it an EVAL message
;tail-recursively.
]; END of IFN HNKLOG,
EVTB1: JRST PDLNKJ ;FIXNUMS EVALUATE TO THEMSELVES
JRST PDLNKJ ;DITTO FLONUMS
DB$ JRST PDLNKJ ;DITTO DOUBLES
CX$ JRST PDLNKJ ;DITTO COMPLEXES
DX$ JRST PDLNKJ ;DITTO DUPLEXES
BG$ POPJ P, ;GUESS WHAT, FELLAHS
JRST EE1 ;SOME HAIR FOR SYMBOLS
HN$ REPEAT HNKLOG+1, .VALUE ;HUNKS (SHOULD BE CAUGHT BEFORE THIS TABLE)
JRST EV2 ;RANDOMS LOSE
POPJ P, ;ARRAYS EVAL TO SELVES
IFN .-EVTB1-NTYPES+1, WARN [WRONG LENGTH TABLE]
EV2: %WTA EMS25 ;UNEVALUABLE DATUM (RANDOMNESS)
JRST EV0
EVTB2: JRST EV3A ;FIXNUM AS A FUNCTION IS AN ERROR
JRST EV3A ;DITTO FLONUM
DB$ JRST EV3A ;DITTO DOUBLE
CX$ JRST EV3A ;DITTO COMPLEX
DX$ JRST EV3A ;DITTO DUPLEX
BG$ JRST EV3A ;DITTO BIGNUM
JRST EE2 ;SYMBOLS - THE GOOD CASE
HN$ REPEAT HNKLOG+1, .VALUE ;HUNKS
JRST EV3A ;IT'S A TRULY RANDOM FUNCTION!
JRST ESAR ;IT'S AN ARRAY
IFN .-EVTB2-NTYPES+1, WARN [WRONG LENGTH TABLE]
EE1: PUSHJ P,EVSYM ;EVALUATE SYMBOL
POPJ P, ;WIN
JRST EV0 ;LOSE - RETRY
EE2: SETZ R, ;ZERO R FOR HACK TO TRAP AUTOLOAD LOSS
EE2A: HRRZ T,(T) ;CAR (X) IS ATOMIC
JUMPE T,EAL2 ;GET FUNCTION DEFINITION OFF ATOM
HLRZ TT,(T)
HRRZ T,(T)
CAIL TT,QARRAY ;SYMBOL HEADERS FOR FUNCTION MARKERS
CAILE TT,QAUTOLOAD ; ARE LINEAR IN MEMORY
JRST EE2A
2DIF JRST @(TT),ETT,QARRAY
ETT: EAR ;ARRAY
ESB ;SUBR
EFS ;FSUBR
ELSB ;LSUBR
AEXP ;EXPR
EFX ;FEXPR
EFM ;MACRO
EAL ;AUTOLOAD
EAL: HRRI R,(T) ;NOTE THAT WE SAW AUTOLOAD PROPERTY
JRST EE2A
EAL2: JUMPL R,EV3J ;FN UNDEF AFTER AUTOLOAD
JUMPE R,EV3 ;NO AUTOLOAD PROP - TRY EVALING ATOM
TLNE C,040000 ;IS THIS A CASE OF 'APPLYING A MACRO'?
JRST EFMER
MOVEI B,(R)
HLRZ T,(A)
PUSHJ P,IIAL
HLRZ T,(A)
SETO R,
JRST EE2A
EFM: CAIE C,ILIST ;FOUND MACRO FOR EVAL CASE
JRST [ TLO C,440000 ;BIT 040000 DESIGNATES 'SAW A MACRO'
JRST EE2A ] ; BUT IGNORE MACROS FOR APPLY
MOVE B,AR1
HLRZ AR1,(T) ;COMMENT THIS CROCK
CAIN A,AR1
PUSHJ P,CONS1
CALLF 1,(AR1) ;SO HAND THE FORM TO THE MACRO
JRST EVAL ; AND RE-EVALUATE THE RESULT
EFX: HLRZ T,(T) ;FOUND FEXPR
HLL T,AR1 ;SO A FEXPR BEHAVES LIKE AN EXPR
PUSH P,T ; WHOSE ONE ARG IS CDR OF THE FORM
HRLI AR1,400000 .SEE IAP4 ;FOR EXPLANATION OF THIS HACK
PUSH P,AR1 ; WHICH ALLOWS FEXPRS AN ALIST ARG, SEE
MOVNI T,1 ; THE CODE AT IAPPLY
JRST IAPPLY
AEXP: HLRZ T,(T) ;FOUND EXPR
HLL T,AR1
EXP3: PUSH P,T ;FOUND LAMBDA, LABEL, FUNARG
MOVEI A,(AR1)
CIAPPLY:
MOVEI TT,IAPPLY
JRST (C)
EFS: HLRZ T,(T) ;FOUND FSUBR
MOVEI C,ESB3 ;THIS IS SO WE DON'T EVAL THE ARGS!
JRST ESB2
ELSB: PUSH P,CPOPJ ;FOUND LSUBR
HLLM AR1,(P)
MOVE R,T
HLL R,AR1
MOVEI TT,ELSB1
HRRZ A,AR1
JRST (C)
ELSB1: MOVEI A,NIL ;A HAS NIL WHEN ENTERING AN LSUBR
HLRZ D,(R)
SKIPN V.RSET
JRST (D)
HLRZ R,R
PUSHJ P,ARGCK0 ;CHECK OUT NUMBER OF ARGS
JRST ESB6
JRST (D)
ESAR: SKIPA TT,T ;FOUND SAR
EAR: HLRZ TT,(T) ;FOUND ARRAY
MOVEI R,(TT)
SKOTT TT,SA
JRST EV3A
EAR3: HRRZ T,ASAR(R)
CAIN T,ADEAD
JRST EV3A ;AHA! THIS ARRAY IS DEAD!
PUSH P,R
MOVEI T,EAR1 ;MUST DO SOME HAIR SO THAT
JRST ESB4 ; INTERRUPTS WON'T SCREW US
EAR1: MOVE T,LISAR ;DO NOT MERGE THIS WITH IAPAR1
JRST @ASAR(T) .SEE ESB3
ESB: HLRZ R,AR1 ;FOUND SUBR
HLRZ T,(T)
ESB4: MOVEI TT,ESB1
ESB2: MOVEI A,(AR1) ;A GETS LIST OF ARGS
HLL T,AR1
PUSH P,T ;STORE ADDRESS OF SUBROUTINE FOR FN
JRST (C) ;GO SOMEWHERE OR OTHER
ESB1: PUSHJ P,ARGCHK
JRST ESB6
MOVE TT,[A,,A+1]
MOVEI A,Q..MIS
BLT TT,A+NACS-1
JSP R,PDLA2(T)
ESB3: HRRZ TT,(P)
CAIN TT,EAR1 ;HACK TO HELP EAR1 WIN
JRST ESB3C
ESB3A: SKIPN V.RSET
POPJ P, ;ADDRESS OF SUBR IS ON STACK
MOVEI TT,CPOPJ ;WELL, MAYBE DO SOME *RSET HAIR
HLL TT,(P)
EXCH TT,(P)
JRST (TT)
ESB3C: HRRZ TT,-1(P)
MOVEM TT,LISAR ;SAR PROTECTED BY BEING IN LISAR
POP P,-1(P)
JRST ESB3A
EV3: SKIPE EVPUNT ;PUNT EVALUATION OF SYMBOL?
JRST EV3C
JUMPL C,EV3B ;C<0 => TOO MANY RE-EVALS OF A FN
HLRZ A,AR1
HLRZ A,(A)
HRRZ A,@(A) ;GET VALUE OF ATOMIC FUNCTION
CAIN A,QUNBOUND ;IT'S UNBOUND. LOSE, LOSE, LOSE...
JRST EV3A
TLNN C,777740 ;SAVE FN NAME IN EV0B, MAYBE
HLRZM AR1,EV0B
EV4: ADD C,[1_34.] ;THIS SIZE OF THIS QUANTITY CONSTRAINS
EV4B: HRL AR1,A ; THE # OF TIMES WE MAY RE-EVAL THE FN
MOVEI A,AR1
JRST EV0A
EV3C: CAIE C,ILIST ;RUN OUT OF THINGS TO TRY WHEN LOOKING FOR
TLNN C,040000 ;'MACRO' BIT -- SET BY EFM
JRST EV3A ; FUNCTION DEF ON A SYMBOL. DID "APPLY"
EFMER: LERR EMS21 ;IMPROPER USE OF MACRO
;;; (EVAL-WHEN (. . . EVAL . . .) e1 e2 . . . en) does a progn on
;;; the ei, and returns non-null only if the evaluations were done.
;;; The context combined with the first arg list determines if any
;;; thing is done - if there is EVAL in this list, then the progn
;;; is done.
EWHEN: HRRZ C,(A)
SKOTT C,LS
JRST FALSE
PUSH P,C
HLRZ B,(A)
MOVEI A,QOEVAL
PUSHJ P,MEMQ1
POP P,B
JUMPE A,CPOPJ
JRST IPROGN
SUBTTL SYMEVAL
SYMEV0: %WTA NASER
SYMEVAL: JUMPE A,CPOPJ ;SUBR 1
JSP T,SPATOM
JRST SYMEV0
PUSHJ P,EVSYM
POPJ P, ;WON
JRST SYMEVAL ;LOST
;;; EVALUATE ATOMIC SYMBOL. SKIPS ON FAILURE (AFTER DOING ERROR).
EVSYM: HLRZ T,(A) ;T GETS POINTER TO SYMBOL BLOCK
HRRZ T,@(T) ;AR1 GETS VALUE FROM VALUE CELL!!!
CAIN T,QUNBOUND
JRST EE1A ;FOOBAR! VALUE CELL CONTAINS UNBOUND
MOVEI A,(T) ;SO THE VALUE IS THE RESULT OF EVAL
POPJ P,
EE1A: %UBV MES6 ;UNBOUND VAR
JRST POPJ1
;;; END OF EVSYM ROUTINE
SUBTTL APPLY, *APPLY, SUBRCALL, LSUBRCALL, ARRAYCALL, FUNCALL
APPLY: CAME T,XC-2 ;"EXTERNAL" APPLY - SUBR (2 . 3)
JRST AP4 ;MAY TAKE A THIRD ALIST ARG
JSP R,PDLA2(T)
APPWT1: JUMPE B,AP3 ;ALLOW NIL AS SECOND ARG
SKOTT B,LS ;SECOND ARG TO APPLY MUST BE A LIST
JRST APPWTA
.APPLY: ;SUBR 2 (*APPLY)
AP3: SKIPN V.RSET
JRST AP3A
PUSH P,B
PUSH P,FXP
HRLM FLP,(P)
PUSH P,A
HRLM SP,(P)
PUSH P,[$APPLYFRAME]
AP3A: MOVEI AR1,(B) ;"INTERNAL" APPLY -
HRL AR1,A ; FUNCTION IN A, LIST OF ARGS IN B
MOVEI A,AR1
MOVEI C,AP2 ;THIS CROCK LETS US SHARE CODE WITH
JRST EV0A ; EVAL BY PREVENTING EVAL'ING OF ARGS
APPWTA: EXCH A,B
WTA [MUST BE A LIST -- APPLY!]
EXCH A,B
JRST APPWT1
AP2: MOVEI T,0 ;DE-LISTIFY THE ARGS AND STACK THEM
JUMPE A,(TT) ; ON THE PDL, AND ALSO COUNT THEM
PUSH P,(A) ;DOING THINGS THIS WAY AVOIDS
HLRZS (P) ; DESTROYING ANY OTHER ACS
HRRZ A,(A)
SOJA T,.-4
AP4: JSP TT,LWNACK ;APPLY WITH AN ALIST (GOOD GRIEF!)
LA23,,QAPPLY
MOVEM T,APFNG1
SKIPE A,(P) ;PURPOSELY CRIPPLING THE POWER OF
JSP T,FXNV1 ; THE ALIST ROUTINE: FOOEY! - GLS
PUSHJ P,ALIST ;SO CREATE MORONIC ALIST ENVIRONMENT
EXCH T,APFNG1
JSP R,PDLA2(T)
SKIPE APFNG1 ;ALIST RETURNING NON-ZERO IN T =>
PUSH P,CAUNBIND ; TWO BIND BLOCKS WERE PUSHED
PUSH P,CAUNBIND
JRST AP3
SUBRCALL:
JSP TT,FWNACK ;LSUBR (2 . 7)
FA234567,,QSUBRCALL
JSP TT,JLIST
ADDI T,1
JSP R,PDLARG
POP P,TT
JSP D,PTRCHK
PUSHJ P,(TT)
RETTYP: POP P,D ;PURELY FOR TYPE CHECKING
CAIN D,QFIXNUM
JSP T,FXNV1
CAIN D,QFLONUM
JSP T,FLNV1
POPJ P,
%LSUBRCALL:
JSP TT,FWNACK ;FSUBR
FA2N,,Q%LSUBRCALL
JSP TT,JLIST
MOVEI D,(P)
ADDI D,(T)
MOVEI TT,RETTYP
EXCH TT,1(D)
JSP D,PTRCHK
AOJA T,(TT)
PTRCHK: CAIL TT,BEGFUN
CAIL TT,ENDFUN
JRST .+2
JRST (D)
CAML TT,BPSL
CAML TT,@VBPORG
IFN HISEGMENT,[
JRST .+2
JRST (D)
CAIL TT,ENDHI
CAML TT,HBPORG
] ;END OF IFN hisegment
JRST PTRCKE
JRST (D)
%ARRAYCALL:
JSP TT,FWNACK ;FSUBR
FA76543,,Q%ARRAYCALL
JSP TT,JLIST
MOVEI D,(T)
ADDI D,(P) ;FALLS INTO FUNCALL
%ARR7: HRRZ A,1(D)
SKOTT A,SA
SOJA T,%ARR0
MOVEI B,CPOPJ
EXCH B,(D)
HLRZ TT,@1(D) .SEE ASAR
MOVEI F,AS<SX>
CAIN B,QFIXNUM
MOVEI F,AS<FX>
CAIN B,QFLONUM
MOVEI F,AS<FL>
TRNN TT,(F)
JRST %ARR0A
FUNCALL: MOVEI D,QFUNCALL ;LSUBR (1 . 777)
JUMPE T,WNALOSE ;(FUNCALL F X1 X2 ... XN) IS LIKE
FUNCA1: SKIPN V.RSET ; (APPLY F (LIST X1 X2 ... XN))
AOJA T,IAPPLY ;IN *RSET MODE, WE FAKE
ADDI T,1 ; OUT THE UUO STUFF
MOVEI TT,(P) ; INTO DOING THE APPLY
ADDI TT,(T) ; FRAME HACKERY FOR US
MOVEI B,CPOPJ
EXCH B,(TT)
JCALLF 16,(B)
; "VCTRS" is either (), or else a list of the subr address for, in order,
; (VECTORP VECTOR-LENGTH VREF)
;LEXPR-FUNCALL
%WNA MES20
%LXFC: aojge t,.-1 ;Count the function arg
skipn vctrs
jrst liap0
move a,(p) ;get &rest arg to spread
push fxp,t ;Save T from the ferocious compiled fn
hlrz t,@vctrs
pushj p,(t) ;calls the VECTORP function
jumpn a,liavec ;Bleh, kludgy vectors, do it slow
pop fxp,t ;recover T
liap0: pop p,a ;Get &rest arg to spread, again
aoja t,liap0b ;account for 1 arg being "popped off"
liap0a: wta [LAST ARG NOT A LIST OR VECTOR - LEXPR-FUNCALL!]
liap0b: movei tt,(a)
lsh tt,-seglog
hrrz tt,st(tt)
caie tt,QLIST
jumpn a,liap0a
liap1: jumpe a,iapply ;on null, exit
hlrz b,(a) ;get CAR
push p,b ;push it on the stack as next arg
hrrz a,(a) ;Next!
soja t,liap1 ;and loop, counting
liavec: hrrz t,@vctrs
hlrz tt,(t) ;address of VECTOR-LENGTH function
hrrz t,(t)
hlrz t,(t)
push fxp,t ;address of VREF function
push fxp,[-1] ;"index" to cycle over the vector
move a,(p) ;Get vector
pushj p,(tt) ;calls the VECTOR-LENGTH function
push fxp,(a) ;Save it on FXP
movn tt,(a) ;Get - the length
addm tt,-3(fxp) ;update the argument count
liavc0: aos tt,-1(fxp) ;increment our count
caml tt,(fxp) ;Have we reached the end?
jrst liavc9 ; Yep, let's get out of here
move a,(p) ;Get vector
movei b,-1(fxp) ;Get index
hrrz t,@vctrs
hrrz t,(t)
hlrz t,(t)
pushj p,(t) ;calls the VREF function
exch a,(p) ;put it on the stack
push p,a ;Save our vector again
jrst liavc0 ;loop the loop
liavc9: popi p,1 ;Throw away the vector, we're all through
popi fxp,3 ;toss off "length", "index" and "vref-addr"
pop fxp,t ;At last, our argument count
aoja t,iapply ;Don't count function as arg, go apply it
;;; VERY INTERNAL APPLY, FOR USE PARTICULARLY WITH "CALL" UUO'S
;;;
;;; STATE OF WORLD AT ENTRANCE TO IAPPLY:
;;; T HAS -<NUMBER OF ARGS ON PDL>.
;;; PDL HAS ARGS ON IT; BELOW THEM IS A SLOT
;;; WITH THE FUNCTION IN THE RIGHT HALF.
;;; THE FUNCTION'S NAME IS MAYBE IN THE LEFT HALF.
;;; C IS USED PRIMARILY TO POINT TO THIS LATTER SLOT; AND, AS
;;; USUAL, THE LEFT HALF HELPS TO LIMIT FUNCTION RE-EVALS.
;;; IF THERE IS ONLY ONE ARG ON THE STACK, 400000 IN THE LEFT
;;; HALF OF THE PDL SLOT MEANS FUNCTION IS A FEXPR, AND MAY
;;; THEREFORE TAKE AN EXTRA (A-LIST) ARGUMENT.
IAPPLY: MOVE C,T ;STATE OF WORLD AT ENTRANCE:
ADDI C,(P) ; T HAS -<NUMBER OF ARGS ON PDL>
ILP1: MOVE A,(C) ; NEXT PDL SLOT HAS FUNCTION IN RH,
TLZN A,-1
HRLM A,(C) ; Save FN in left half in case it's not there
SKOTT A,LS
2DIF JRST (TT),APTB1-1,QLIST ;FN IS NOT LIST STRUCTURE
IFN HNKLOG,[
TLNE TT,HNK
JRST IAHNK
IALIS:
] ; END IFN HNKLOG,
HRRZ B,(A)
HLRZ A,(A)
CAIN A,QLAMBDA
JRST IAPLMB ;IT'S A LAMBDA
CAIN A,QFUNARG
JRST APFNG ;IT'S A FUNARG (MORE GOOD GRIEF!)
CAIN A,QLABEL
JRST APLBL ;IT'S A LABEL (SUPER GOOD GRIEF!)
PUSH P,C
PUSH FXP,T
HRRZ A,(C)
JUMPL C,IAP2A ;JUMP IF WE'VE RE-EVAL'ED TOO MUCH
PUSHJ P,EV0 ;ELSE EVAL THE FUNCTIONAL FORM
POP P,C ; AND TRY IT AGAIN...
POP FXP,T
ILP1B: MOVE B,(C)
HRRM A,(C)
TLO C,400000
JRST ILP1
APTB1: JRST IAP2A ;FIXNUMS ARE NOT FUNCTIONS!
JRST IAP2A ;NOR FLONUMS
DB$ JRST IAP2A ;NOR DOUBLES
CX$ JRST IAP2A ;NOR COMPLEXES
DX$ JRST IAP2A ;NOR DUPLEXES
BG$ JRST IAP2A ;NOR BIGNUMS ALREADY
JRST IAPATM ;SYMBOLS ARE OKAY, BUT JUST BARELY
HN$ REPEAT HNKLOG+1, .VALUE ;HUNKS
JRST IAP2A ;TRUE RANDOMS ARE OUT!
JRST IAPSAR ;IT'S AN ARRAY - OKAY, I GUESS
IAPATM: HRRZ B,(A) ;APPLY GOT ATOMIC FUNCTION
HRRZS 1(C) ;KILL POSSIBLE 400000 BIT DUE TO FEXPR
TDZA R,R
IAPAT2: HRRZ B,(B)
IAPAT3: JUMPE B,IAPIA1 ;GRAB FUNCTION FROM PROP LIST
HLRZ TT,(B)
HRRZ B,(B)
CAIL TT,QARRAY ;REMEMBER, FUNCTION PROPS ARE
CAILE TT,QAUTOLOAD ; LINEAR IN MEMORY
JRST IAPAT2
2DIF JRST @(TT),IATT,QARRAY
IATT: IAPARR ;ARRAY
IAPSBR ;SUBR
IAPSBR ;FSUBR
IAPLSB ;LSUBR
IAPXPR ;EXPR
IAPXPR ;FEXPR
IAPAT2 ;JUST IGNORE MACROS
IAPIAL ;AUTOLOAD
IAPIAL: HRRI R,(B)
JRST IAPAT2
IAPIA1: JUMPL R,IAP2J
JUMPE R,IAP2
MOVEI B,(R)
PUSH FXP,T
MOVEI T,(A)
PUSHJ P,IIAL
POP FXP,T
HRRZ B,(A)
SETO R,
JRST IAPAT3
IIAL: PUSH P,A
HLRZ A,(B)
PUSHJ P,AUTOLOAD
JRST POPAJ
IAPSAR: SKIPA TT,A ;APPLY A SAR
IAPARR: HLRZ TT,(B) ;APPLY AN ARRAY
MOVEM TT,LISAR ;FOR INTERRUPT PROTECTION ONLY
MOVEI R,(TT)
MOVEI TT,IAPAR1
JRST IAPSB1
IAPSBR: HLRZ TT,(B) ;APPLY A SUBR
HRRZ R,(C)
IAPSB1: HRRM TT,(C)
JRST ESB1
IAPAR1: MOVE TT,LISAR
JRST @ASAR(TT)
IFN HNKLOG,[
IAHNK: SKIPN ICALLI ;Do we have a CALL interpreter?
JRST IALIS
PUSH P,T
PUSHJ P,USRHNP ;Is this a user hunk?
EXCH T,TT
POP P,T
JUMPE TT,IALIS ;Nope, just pretend it's a list
XCT ICALLI ;Otherwise run user's hook
]; -- End IFN HNKLOG,
IAPXPR: HLRZ A,(B)
JRST ILP1B
IAPLSB: MOVEI TT,CPOPJ
HRRM TT,(C)
MOVE R,B
JRST ELSB1
IAP2: SKIPE EVPUNT ;DON'T EVALUATE FUNCTIONAL VARIABLE?
JRST IAP2A
JUMPL C,IAP2A
HRRZ A,(C) ;APPLY FUNCTIONAL FROM VALUE CELL
HLRZ A,(A)
HRRZ A,@(A)
CAIE A,QUNBOUND ;FOOBAR! IT'S UNBOUND
JRST ILP1B
JRST IAP2A
IAPLMB: HLRZ TT,(B) ;APPLY A LAMBDA EXPRESSION
MOVEI D,(TT)
LSH D,-SEGLOG
MOVE D,ST(D)
TLNE D,SY
JUMPN TT,IAP3
SETZ D, ;IMPORTANT THAT D BE NON-NEG - SEE IAP4
MOVEI C,(TT)
HRRZ B,(B)
MOVE R,T
IPLMB1: JUMPE T,IPLMB2 ;NO MORE ARGS
JUMPE TT,QF2A ;TOO MANY ARGS SUPPLIED
IAP5: HLRZ A,(TT)
SKIPE V.RSET
JUMPN A,IAP5C
IAP5C: MOVEI AR1,1(T)
ADD AR1,P
HLLZ D,(AR1) ;SEE COMMENT AT EFX - ALLOWS
HRLM A,(AR1) ; A FEXPR TO TAKE AN A-LIST ARG
HRRZ TT,(TT)
AOJA T,IPLMB1
IAP5B: MOVEI D,(A)
LSH D,-SEGLOG
MOVE D,ST(D)
TLNN D,SY
JRST LMBERR
JRST IAP5C
IPLMB2: JUMPN TT,IAP4 ;TOO FEW ARGS SUPPLIED
JUMPN R,IPLMB4 ;NO LAMBDA LIST IN FUN
POP P,TT
HRRI TT,CPOPJ ;LAMBDA LIST IS NULL
SKIPE V.RSET
PUSH P,TT
HRRZ A,(B)
JUMPN A,LMBLP
HLRZ A,(B)
JRST EVAL
IPLMB4: MOVEM SP,SPSV
SKIPA
IPLM4A: PUSHJ P,BIND ;BIND VALUES TO LAMBDA VARS
IPLM4B: POP P,AR1 ;FUN HAS A NON-NL LAMBDA LIST
HLRZ A,AR1
SKIPE A ;IF NIL AS VARIABLE, DON'T BIND THIS ARG
AOJLE R,IPLM4A ;TO BIND A NON-NIL VARIABLE
AOJLE R,IPLM4B ;THIS WINS EVEN IF PREVIOUS INS DOESN'T JUMP
SKIPN V.RSET
JRST IPLMB5
HRRI AR1,CPOPJ
TLNE AR1,-1
PUSH P,AR1
IPLMB5: JSP T,SPECX
HRRZ AR1,(B)
PUSH P,CUNBIND
HLRZ A,(B)
JUMPE AR1,EVAL ;A GENERALIZED LAMBDA: NON-NULL LAMBDA LIST
LMBLP: PUSH P,B ;FOR GENERAL LAMBDAS, EVALS SEQUENCE OF EXP'S
HLRZ A,(B)
PUSHJ P,EVAL
LMBLP1: POP P,B
HRRZ B,(B)
LMBLP2: JUMPN B,LMBLP
POPJ P,
IPROGN: MOVEI A,NIL ;INTERNAL PROGN
JRST LMBLP2
IAP3: MOVEI A,(TT) ;APPLY LEXPR
MOVN TT,T
CAIL TT,XHINUM
JRST LXPRLZ
MOVEI AR1,CPOPJ
HRRM AR1,(C)
MOVEI AR1,IN0(TT)
MOVEM SP,SPSV
PUSHJ P,BIND
MOVEI C,(C)
EXCH C,ARGLOC
HRLI C,ARGLOC
PUSH SP,C ;BIND ARGLOC TO LOC OF ARGS ON PDL
EXCH AR1,ARGNUM
HRLI AR1,ARGNUM
PUSH SP,AR1 ;BIND ARGNUM TO NUMBER OF ARGS
JSP T,SPECX
HRRZ B,(B)
PUSHJ P,LMBLP
SKIPN T,@ARGNUM
JRST UNBIND
HRLS T
SUB P,T
JRST UNBIND
CUNBIN: JRST UNBIND
IAP4: JUMPGE D,QF3A
AOJN R,QF3A
JRST IAP4A ;FEXPR OF TWO ARGS
SUBTTL FUNCTION, QUOTE, DECLARE, COMMENT, SETQ, AND, OR
FUNCTION: SKIPA D,CQFUNCTION ;FEXPR 1
QUOTE: MOVEI D,QQUOTE ;FEXPR 1
JUMPE A,WNAFOSE
HRRZ TT,(A)
JUMPE TT,$CAR
JRST WNAFOSE
DECLARE: MOVEI A,QDECLARE ;FSUBR (IGNORES ARG)
POPJ P,
$COMMENT: MOVEI A,Q$COMMENT ;FSUBR (IGNORES ARG)
POPJ P,
SETQ: PUSH P,A
SET1: PUSHJ FXP,SET0 ;DO ONE STEP OF A "MULTIPLE" SETQ.
SKIPE (P)
JRST SET1
JRST POP1J
SET0: HLRZ A,@(P) ;ASSUMES ARGLIST PTR STORED IN 0(P)
JSP D,SETCK ;ENTERED BY PUSHJ FXP,SET0
HRRZ B,@(P)
JUMPE B,SETWNA
PUSH P,A ;ATOM TO BE SETQ'D
HLRZ A,(B)
HRRZ B,(B)
MOVEM B,-1(P) ;CDR THE ARGLIST
PUSHJ P,EVAL
POP P,AR1
JSP T,.SET
POPJ FXP,
$AND: HRLI A,TRUTH
$OR: HLRZ C,A
PUSH P,C
ANDOR: HRRZ C,A
JUMPE C,POPAJ
MOVSI C,(SKIPE (P))
TLNE A,-1
MOVSI C,(SKIPN (P))
XCT C
JRST POPAJ
MOVEM A,(P)
HLRZ A,(A)
PUSHJ P,EVAL
EXCH A,(P)
HRR A,(A)
JRST ANDOR
SUBTTL PROG, PROGV, RETURN, GO
PROG: HLRZ AR2A,(A) ;FSUBR
HRRZ A,(A)
PRG1: JUMPE AR2A,PRG1Z ;EITHER THEY ARE NIL OR
SKOTT AR2A,LS ; MUST HAVE A LIST FOR PROG VARS
JRST PRGER1
PRG1Z: PUSH P,A
SETZ C,
JSP T,PBIND ;BIND PROG VARIABLES TO NIL
POP P,A
PUSHJ P,PG0 ;EVALUATE PROG BODY
MOVEI A,NIL
JRST UNBIND ;UNBIND VARIABLES
PG0: PUSH P,PA3
PUSH P,PA4
PUSH P,SP
PUSH P,FXP
PUSH P,FLP
LPRP==.-PG0+1 ;LENGTH OF PROG PDL, IE HOW MUCH PROG HAS
MOVEM P,PA4 ;CAUSED TO BE PUSHED
HRLS A
MOVEM A,PA3
PG1: HLRZ T,PA3
PG1A: JUMPE T,PRXIT ;NORMAL EXIT
HLRZ A,(T)
HRRZ T,(T)
HRLM T,PA3
SKOTT A,LS
JRST PG1
PUSHJ P,EVAL
PG0A: JRST PG1
;;; JSP T,VBIND ;LIST OF SYMBOLS IN AR2A, VALUES IN A
;;; BINDS EACH SPECIAL VARIABLE IN THE LIST TO CORRESPODNING VALUES.
;;; IF VALUES LIST TOO SHORT, "UNBOUND" GETS USED FOR PROGV, AND
;;; NIL OTHERWISE.
VBIND: MOVEI C,(A) ;INTERPRETED AND COMPILED PROGV COME HERE
SKIPA R,[QUNBOUND] ;USE UNBOUND AS VALUE OF EXTRA VARIABLES
PBIND: MOVEI R,NIL ;USE NIL AS VALUE OF EXTRA VARS
MOVEM SP,SPSV ;BIND PROG VARIABLES
JUMPE AR2A,SPECX
MOVEI AR1,NIL
PBIND1: HLRZ A,(AR2A) ;NEXT VARIABLE
HLRZ AR1,(C) ;NEXT VALUE
SKIPN C ;HAVE WE RUN OFF THE END OF THE LIST?
MOVEI AR1,(R) ;YES, USE DEFAULT VALUE
SKOTT A,SY
JRST PBIND2
CAIE A,TRUTH ;DONT BIND NON-SYMBOLS, NOR "T"
PUSHJ P,BIND
PBIND2: HRRZ C,(C)
HRRZ AR2A,(AR2A)
JUMPN AR2A,PBIND1
JRST SPECX
PROGV: HRRZ B,(A) ;FSUBR
HRRZ C,(B)
HLRZ A,(A)
HLRZ B,(B)
PUSH P,C
PUSH P,B
PUSHJ P,EVAL ;GET LIST OF VARIABLES
EXCH A,(P)
PUSHJ P,EVAL ;GET LIST OF VALUES
POP P,AR2A
JSP T,VBIND ;BIND VARIABLES
POP P,B
PUSHJ P,LMBLP ;EVAL REST LIKE LAMBDA BODY
JRST UNBIND
RETURN: JSP T,BKERST ;SUBR 1
MOVE P,PA4
AOS -LPRP+1(P) ;RETURN CAUSES SKIP
PRXIT: POP P,FLP ;PROG EXIT
POP P,FXP
POP P,TT
PUSHJ P,UBD0
POP P,PA4
ERRP4: POP P,PA3
RHAPJ: MOVEI A,(A)
CQFUNCTION: POPJ P,QFUNCTION
GO: JSP TT,FWNACK
FA1,,QGO
HLRZ A,(A)
GO2: JSP T,SPATOM ;LEAVES TYPE BITS IN TT
JRST GO3
GO1: JSP T,BKERST
HRRZ T,PA3
PG5: JUMPE T,EG1
HLRZ TT,(T)
HRRZ T,(T)
CAIN TT,(A)
JRST PG5A
TLNN A,400000 ;4.9 BIT => GO TAG IS NUMERIC
JRST PG5
MOVEI D,(TT)
LSH D,-SEGLOG
SKIPL D,ST(D)
TLNN D,FX+FL
JRST PG5
MOVE TT,(TT)
CAME TT,(A)
JRST PG5
PG5A: MOVE P,PA4
MOVE FLP,(P)
MOVE FXP,-1(P)
HRRZ TT,-2(P)
PUSHJ P,UBD
JRST PG1A
GO3: TLNN TT,FX+FL
JRST GO3A
GO3B: MOVE TT,(A) ;SET 4.9 BIT OF A IF TAG IS NUMERIC
CAML TT,[-XLONUM]
CAIL TT,XHINUM ; BUT NOT INUM
TLO A,400000
JRST GO1
GO3A: PUSHJ P,EVAL ;IF ARG TO GO ISN'T ATOMIC, DO ONE EVAL AND TRY AGAIN
MOVEI TT,(A)
LSH TT,-SEGLOG
MOVE TT,ST(TT)
TLNE TT,FX+FL
JRST GO3B
TLNE TT,SY
JRST GO1
JRST EG1
SUBTTL DO FUNCTION
DO: PUSH P,PA4
SETZM PA4
PUSH FXP,R70 ;A "DO SWITCH" TO MARK EXPANDED FORMAT
PUSH P,A
HLRZ A,(A)
SKOTT A,LS ;HUNKS WIN AS WELL AS LISTS
JUMPN A,DO4A
HRROM A,(FXP)
HLRZ A,@(P) ;SETUP FOR MULTIPLE INDICES
HRRZ C,@(P)
HLRZ B,(C)
JRST DO4
DO4A: MOVE A,(P) ;SINGLE INDEX DO
HRRZ B,(A)
HRRZ B,(B)
HRRZ B,(B)
MOVE C,B
DO4: HRRZ C,(C)
MOVEM A,(P) ; (P) PROG BODY
DO4C: SKOTT B,LS
JUMPN B,DOERRE
PUSH P,B ; -1(P) ENDTEST
PUSH P,C ; -2(P) DO VARS LIST
MOVE A,-2(P)
MOVSI R,600000 ;EVALUATE AND SETUP INITIAL VALUES
SKIPN -1(P)
MOVSI R,400000 ;200000 BIT SAYS STEPPERS ARE OKAY
PUSHJ FXP,DO5
SKIPN -1(P)
JRST DO4D
DO7: HLRZ A,@-1(P)
PUSHJ P,EVAL
JUMPN A,DO8
DO7A: MOVE A,(P)
PUSHJ P,PG0 ;DO PROG BODY (MAY SKIP ON RETURN STATEMENT)
JRST DO2
DO9: MOVE B,-2(P)
SUB P,R70+3 ;BREAK OUT OF BODY BY RETURN STATEMENT
POP P,PA4
SUB FXP,R70+1
JUMPN B,UNBIND
POPJ P,
DO8: SKIPN A,(FXP)
JRST DO9 ;SIMPLE DO FORMAT
HRRZ B,@-1(P) ;DO PASSED ENDTEST, AND RETURNS A VALUE
PUSHJ P,IPROGN
JRST DO9
DO2: MOVE A,-2(P)
MOVEI R,0 ;DO STEPPING FUNCTIONS
PUSHJ FXP,DO5
JRST DO7
DO4D: MOVE A,(P)
PUSHJ P,PG0
SETZ A, ;DEFAULT VALUE OF ONCE-THROUGH DO IS NIL
JRST DO9
DO5: JUMPE A,DO6 ;DOES PARALLEL SETQS - ON LISTS LIKE (I V1 V2)
PUSH P,A ;WILL DO (SETQ I V1) IF R < 0
SKIPE -1(FXP) ;WILL DO (SETQ I V2) IF R > 0
HLRZ A,(A) ;IF DOSW SAYS SINGLE INDEX, THEN ONLY ONE LIST
DO5Q: MOVEI B,(A)
SKOTTN A,SY ;A SINGLETON SYMBOL
JRST DO5Q1 ;TREAT AS (<SYMBOL> NIL)
JUMPGE R,DO5F ;Not first time through?
;First time through:
SKOTT A,LS ;Does various checks on the variable specs.
JRST DOERR ;BAD VAR LIST
HLRZ A,(B)
JSP T,SPATOM
JRST DOERR
TLNE R,200000
JRST DO5F
HRRZ A,(B) ;Check for steppers in wierd case of DO
JUMPE A,DO5F
HRRZ A,(A)
JUMPN A,DO5ER ;EXTRANEOUS STEPPER
DO5F: HLRZ A,(B)
HRLM A,(P)
HRRZ A,(B)
JUMPL R,DO5E ;First time through?
JUMPE A,DO5B
HRRZ A,(A)
JUMPN A,DO5D
DO5B: POP P,A
SOJA R,DO5C
DO5Q1: JUMPGE R,DO5B
HRLZS A
EXCH A,(P)
JRST DO5C
DO5E: JUMPE A,DO5G ;(I) IS SAME AS (I NIL) ON INITIAL VALUE
DO5D: HLRZ A,(A)
PUSH FXP,R
PUSHJ P,EVAL
POP FXP,R
DO5G: HLL A,(P)
EXCH A,(P) ;NOW (P) HAS ATOM,,VALUE
DO5C: HRRZ A,(A)
SKIPN -1(FXP)
MOVEI A,0 ;SO THAT SINGLE FORMAT DO WILL DROP OUT
AOJA R,DO5
DO6: TRNN R,-1 ;[(SETQ I V1) FROM ABOVE]
POPJ FXP, ;FIRST TIME THROUGH, WE ALLOW OLD BINDINGS
JUMPGE R,DO6C ;TO BE REMEMBERED ON THE SPDL FOR UNBINDING
HRRZS R
MOVEM SP,SPSV
DO6A: POP P,AR1
HLRZ A,AR1
PUSHJ P,BIND
SOJG R,DO6A
JSP T,SPECX
POPJ FXP,
DO6C: POP P,AR1 ;DURING THE STEPPING PHASE, AS OPPOSED TO
HLRZ A,AR1 ;THE INITIALIZATION PHASE, WE LET NO BINDINGS
PUSHJ P,BIND ;ACCUMULATE ON THE SPDL
JSP T,SETXIT
SOJG R,DO6C
POPJ FXP,
SUBTTL COND, ERRSET, ERR, CATCH, THROW, CASE, IF, *CATCH, *THROW,
; UNWIND-PROTECT, CATCHALL, CATCH-BARRIER
COND1: HRRZ A,(B)
COND: JUMPE A,CPOPJ ;ENTRY
PUSH P,A
HLRZ A,(A)
HLRZ A,(A)
CAIN A,TRUTH
JRST CON3
CAME A,VT.ITY
PUSHJ P,EVAL
CON3: POP P,B
JUMPE A,COND1 ;IF FIRST OF COND PAIR IS TRUE
HLRZ B,(B)
SKIPA
COND2: POP P,B
HRRZ B,(B)
JUMPE B,CPOPJ ;LOOP FOR GENERALIZED COND PAIR
PUSH P,B
HLRZ A,(B)
PUSHJ P,EVAL
CON2: JRST COND2
BKERST: SKIPN TT,PA4
JRST BKRST1
TLZ TT,-1
SKIPE B,CATRTN
JRST BKRST2
BKRST3: SKIPE B,ERRTN
CAILE TT,(B)
JRST (T) ;NO TROUBLESOME CATCHS OR ERRSETS
BKRST4: MOVEI TT,BKERST
BKRST0: MOVEM TT,-LERSTP(B) ;BREAK UP A TROUBLESOME CATCH OR ERRSET, E.G.
HRRZI TT,(B) ;WE WAN'T TO GET RID OF THIS FRAME, HANDLE ALL UNWIND-PROTECTS
; INCLUDING THE FRAME WE WANT TO FLUSH
PUSHJ FXP,UNWPRO
CAILE TT,(P) ;IF P LESS THAN FRAME OF INTEREST, THEN IT WAS AN
; UNWIND-PROTECT FRAME AND UNWPRO THREW IT AWAY. JUST
; RETURN TO OUR CALLER.
JRST (T)
;ELSE THROW THE FRAME AWAY BY HAND
MOVE P,B ;(PROG (A) (ERRSET (RETURN (FOO A))))
JRST ERR1 ;AND THEN TRY BKERST AGAIN
BKRST2: CAILE TT,(B)
JRST BKRST3 ;CATCH ISN'T TROUBLESOME, SO TEST FOR ERRSETS
JRST BKRST4 ;AH, CATCH IS TROUBLESOME!
BKRST1: MOVEI A,LGOR
%FAC EMS22
ERRSET: JSP TT,FWNACK
FA12,,QERRSET
MOVEI C,TRUTH
HRRZ B,(A)
JUMPE B,ERRST3
PUSH P,A
HLRZ A,(B)
PUSHJ P,EVAL
MOVEI C,(A)
POP P,A
ERRST3: JSP T,ERSTP
MOVEM P,ERRTN
MOVEM C,ERRSW
HLRZ A,(A)
PUSHJ P,EVAL
ERRNX: PUSHJ P,NCONS ;NORMAL EXIT
JRST ERUN0
ERR: JSP TT,FWNACK
FA012,,QERR
JUMPE A,ERR2
HRRZ B,(A)
JUMPE B,.+3
HLRZ B,(B)
JUMPE B,ERR3A
HLRZ A,(A) ;EVAL BEFORE UNBLOCKING
PUSHJ P,EVAL
JRST ERR2
ERR3A: SKIPN ERRTN
JRST LSPRET
MOVEI T,ERR3
EXCH T,-LERSTP(P)
JRST ERR0 ;UNBLOCK THE ERRSET, THEN
ERR3: SKIPE A ;EVAL THE ARG TO ERR
HLRZ A,(A)
PUSH P,T
JRST EVAL
;(*CATCH <tag-or-list-of-tags> e1 . . . en)
; TAG OR TAG-LIST IS EVALUATED. THEN E1 THROUGH EN ARE EVALED. IF A THROW
; OR *THROW IS DONE THEN IS LIKE A REGULAR CATCH.
.CATCH: PUSH P,A ;SAVE POINTER TO ARGS
HLRZ A,(A) ;EVAL TAG/TAG-LIST
PUSHJ P,EVAL
HRLI A,CATSPC\CATLIS ;FLAG IT AS TAG-LIST
SKOTT A,LS ;IS IT A LIST?
HRRZS A ; NO IT ISN'T LIST
.CATC1: POP P,B ;RESTORE POINTER TO ARGS
JSP TT,CATPS1
HRRZ B,(B) ;CDR THE LIST OF ARGS
PUSHJ P,IPROGN ;IMPLICIT PROGN AROUND THEM
JRST THRALL ;THEN BREAK-UP CURRENT CATCH FRAME
; (CATCH-BARRIER <list-of-tags> E1 . . . En)
; LIST-OF-TAGS IS EVALUATED. THEN E1 THROUGH EN ARE EVALED. IF A THROW
; OR *THROW IS DONE THEN IF TAG IS IN LIST-OF-TAGS, THE CATCH-BARRIER RETURNS,
; ELSE AN UNSEEN-CATCH-TAG ERROR IS GENERATED
CATCHB: PUSH P,A ;SAVE POINTER TO ARGS
HLRZ A,(A) ;EVAL TAG/TAG-LIST
PUSHJ P,EVAL
CATCB2: SKOTT A,LS ;IS IT A LIST?
JRST CATCB1 ;NOPE, ERROR
HRLI A,CATSPC\CATLIS\CATCAB ;YES, FLAG CATCH FRAME CORRECTLY
JRST .CATC1 ;REST IS JUST LIKE *CATCH
CATCB1: WTA [MUST BE A LIST OF TAGS - CATCH-BARRIER!]
JRST CATCB2
;(CATCHALL function e1 . . . en)
; FUNCTION IS A FUNCTION OF TWO ARGS. E1 THROUGH EN ARE EVALED, AND IF NO
; THROW IS DONE THE VALUE OF EN IS RETURNED. IF ANY THROW IS DONE, FUNCTION
; IS INVOKED WITH THE FIRST ARG BEING THE THROW TAG AND THE SECOND BEING THE
; THROWN VALUE. THE VALUE OF THE FUNCTION IS THEN RETURNED AS THE VALUE
; OF THE CATCHALL.
CATCHALL:
PUSH P,A ;SAVE POINTER TO ARGS
HLRZ A,(A) ;EVAL FUNCTION
PUSHJ P,EVAL
HRLI A,CATSPC\CATALL ;FLAG AS A CATCHALL
JRST .CATC1 ;REST IS LIKE *CATCH
;(UNWIND-PROTECT e u1 u2 . . . un)
; EXECUTES U1 THRU Un WHEN THE "CONTOUR" OF THE UNWIND-PROTECT IS EXITED.
; IF e TERMINATES NORMALLY, THEN U1 THRU UN ARE EVALUATED AND THE VALUE
; RETURNED BY e IS RETURNED. IF A NON-LOCAL EXIT OCCURS THRU AN UNWIND-PRO
; FRAME, THEN U1 THRU UN ARE EVALED AND THE EXIT CONTINUES.
UNWINP: HRRZ B,(A) ;GET CDR OF ARG LIST
HRLI B,CATUWP\CATSPC ;AN UNWIND-PROTECT FRAME
MOVEM B,CATID
PUSH FXP,P ;SAVE CURRENT STATE OF STACK
JSP T,ERSTP
MOVEM P,CATRTN
HLRZ A,(A) ;CAR OF ARG LIST
PUSHJ P,EVAL ;EVALUATE IT
HRRZ TT,(FXP) ;NOW MUST RUN THE UNWIND PROTECT FUNCTIONS
PUSHJ FXP,UNWPRO ;UNDO THE UNWIND-PROTECT FRAME
POPI FXP,1 ;REMOVE THE SAVED PDL POINTER FROM FXP
POPJ P, ;THEN RETURN THE VALUE OF e
;ERROR TRAP FOR UNWIND-PROTECT, SHOULD NEVER GET HERE!
UNWERR: LERR [SIXBIT \UNWIND-PROTECT LEFT DUMMY RETURN ADR ON STACK!\]
;COMPILED UNWIND-PROTECT, ENTER WITH JSP TT, CONTINUATION IS AT PC C(TT)+1
PTNTRY::
UNWINC: PUSH P,[UNWERR] ;IF GETS HERE, HMM...
AOS TT ;POINT TO START OF CONTINUATION
HRLI TT,CATUWP\CATCOM\CATSPC ;AN UNWIND-PROTECT FRAME
MOVEM TT,CATID
JSP T,ERSTP
MOVEM P,CATRTN
JRST -1(TT) ;RETURN TO COMPILED CODE
;COME HERE TO CLOSE UP AN UNWIND PROTECT. CALLED WITH JSP TT,
PTEXIT::
UNWINE: MOVEM TT,-LEP1-4(P) ;SAVE RETURN ADR (AN EXTRA SLOT IS ON P)
MOVEI TT,-LEP1(P) ;ADR TO UNWIND TO
PUSHJ FXP,UNWPRO ;UNDO THE UNWIND-PROTECT FRAME
POPJ P, ;THEN RETURN THE VALUE OF e
;(*THROW TAG VAL) SUBR
.THROW: EXCH A,B ;THROW1 WANTS TAG IN B, VAL IN A
JRST THROW1 ;THEN DO A THROW
;;; WITHOUT-INTERRUPTS: ROUTINES WHEN PWIOINT GETS BOUND AND UNBOUND
;;; CALLED from SPECBIND, new value in
;;; R has new value, T has address of word with address in right half.
WIOSPC: PUSH P,TT
HRRZ TT,(T) ;Get address we were trying to clobber
CAIN TT,PWIOINT ;Our special hack location?
JRST WIOSP0 ; yes, hack it
POP P,TT
EXCH R,@(T) ;Otherwise redo instruction to get real int
JRST SPEC4A ;And continue with the SPECBIND if continued
WIOSP0: MOVEI TT,(R) ;New value to TT
SKIPE REALLY ;If UNWPR1 has it living on the stack
SKIPA R,@REALLY ; Get old value for SPEC4A from there
MOVE R,UNREAL ; Else normal.
JUMPE TT,WIOSP1 ;NIL, use as is
CAIE TT,QTTY ;TTY, that's meaningful
MOVNI TT,1 ;Else use -1
WIOSP1: PUSHJ P,WIOBN0 ;Store into UNREAL, maybe run CHECKU
POP P,TT
JRST SPEC4A
;;;CALLED FROM BIND, NEW VALUE IN AR1
WIOBND: HRRZ TT,UNREAL ;CURRENT VALUE
HRRM TT,(SP) ;REMEMBER INSTEAD OF MEANINGLESS VALUE
MOVEI TT,(AR1)
JUMPE TT,WIOBN0 ;NIL, USE AS IS
CAIE TT,QTTY ;TTY, THAT'S MEANINGFUL
MOVNI TT,1 ;ELSE USE -1
WIOBN0: JUMPL TT,WIOBN1
PUSH P,A
PUSH FLP,D ;Can't use FXP because of the SFX hack
PUSH FLP,F
MOVE A,TT
PUSHJ P,ABIND3
PUSHJ P,CHECKU
POP SP,SPSV ;SO RE-OPEN THE BIND-BLOCK
POP FLP,F
POP FLP,D
POP P,A
POPJ P, ;RETURN FROM BIND
WIOBN1: MOVEM TT,UNREAL
POPJ P,
;;; CALLED FROM AFTER UNBIND -- (FLP) HAS OLD VALUE IN LH. CAN ONLY DESTROY T.
WIOUNB: EXCH D,(FLP) ;GET OLD VALUE, SAVE D
PUSH FLP,F ;SAVE F ALSO -- CHECKU MAY CLOBBER
PUSH P,A ;A WILL GET NEW (OLD) VALUE OF UNREAL
HLRZ A,D ;FIGURE OUT REAL OLD VALUE
CAIN A,-1 ;IF HALFWORD -1, THEN TURN INTO FULLWORD
MOVNI A,1
SKIPE REALLY
JRST WIOUN1
PUSHJ P,CHECKU ;RUN INTERRUPTS AS APPROPRIATE
WIOUN0: POP P,A ;RESTORE AC'S AND RETURN
POP FLP,F
POP FLP,D
POPJ P,
WIOUN1: MOVEM A,@REALLY ;Store it in the saved slot
JRST WIOUN0
CASEQ:; TDZA R,R ;FLAG IN R WHETHER CASE/Q
;CASE: SETOI R,
JUMPE A,CPOPJ ;ENTRY, RETURN NIL IF NO ARGS
PUSH P,A ;SAVE POINTER TO ARG LIST
HLRZ A,(A) ;GET EXPRESSION TO MATCH AGAINST
CASEE:; PUSH FXP,R
CAIE A,TRUTH ;FOR SPEED, CHECK FOR SPECIAL KIND
PUSHJ P,EVAL
; POP FXP,R
JUMPE A,CASES ;NIL IS A SYMBOL
MOVE T,A
LSH T,-SEGLOG
MOVE T,ST(T)
TLNE T,FX ;FIXNUM EXPRESSION?
JRST CASEF
TLNE T,SY ;SYMBOL AS EXPRESSION?
JRST CASES
WTA [ -- ARGUMENT TO CASEQ IS NEITHER A FIXNUM NOR A SYMBOL!]
JRST CASEE ;WIN IF USER TRIES AGAIN
CASEF: MOVSI T,FX ;TEST AGAINST FIXNUMS ONLY
JRST CASE1
CASES: MOVSI T,SY ;TEST AGAINST SYMBOLS ONLY
CASE1: POP P,B ;POINTER TO CASE'S ARGUMENTS
PUSH P,A ;EQ TEST AGAINST SYMBOL RETURNED
HRRZ A,(B) ;THE LIST OF MATCHING SETS AND EXPRS
CASE1E: PUSH P,A
HLRZ A,(A) ;THE POINTER TO THE NEXT SET/EXPRS PAIR
HLRZ A,(A) ;THE LIST OF MATCHES OR THE SINGLE MATCH
CASE1H: CAIE A,TRUTH ;IF T THEN AN 'OTHERWISE' CLAUSE
CAMN A,VT.ITY ; Maybe a NIL 'truthity', i.e., #T ?
JRST CASEM
MOVEI TT,(A)
LSH TT,-SEGLOG
MOVE TT,ST(TT)
TLNN TT,LS ;IS THE MATCHING SET A LIST?
JRST CASE1Q ;NO, HANDLE SPECIALLY
CASE1D: PUSH P,A
HLRZ A,(A) ;GET NEXT ELEMENT
CASE1B:;JUMPE R,CASE1A ;DON'T EVALUATE EXPR IF CASEQ
; CAIN A,TRUTH
; JRST CASE1A
; PUSH P,T ;SAVE FLAGS OVER EVAL
; PUSHJ P,EVAL
; POP P,T
; SETO R, ;MAKE SURE FLAG IS STILL CORRECT
CASE1A: TLNE T,SY ;IF TESTING FOR SYMBOLS
JUMPE A,CASE1Z ;THEN NIL IS A VALID ONE
MOVEI TT,(A)
LSH TT,-SEGLOG
TDNN T,ST(TT) ;MATCHING TYPE?
JRST CASE1C
CASE1Z: POP P,B
JSP TT,CASECK ;NON SKIP IF MATCH
JRST CASEM ;MATCH FOUND, PROCESS EXPRESSIONS
HRRZ A,(B) ;GET THE CDR
JUMPN A,CASE1D ;IF MORE MATCHING IN THIS LIST THEN PROCEED
CASE1G: POP P,A ;RESTORE THE LIST OF PAIRS POINTER
HRRZ A,(A) ;THE CDR POINTS TO NEXT CONS
JUMPN A,CASE1E ;IF NOT END OF LIST THEN PROCEED
POPI P,1 ;GET RID OF MATCHING POINTER
POPJ P,
CASE1Q:;JUMPE R,CASEBQ ;IF CASEQ LEAVE UNEVALUATED
; PUSH P,T ;SAVE FLAG
; CAIE A,TRUTH
; PUSHJ P,EVAL
; POP P,T
; SETO R, ;FLAG MUST BE SET IF DID EVAL
CASEBQ: TLNE T,SY ;IF TESTING FOR SYMBOLS
JUMPE A,CASEBZ ;THEN NIL IS A VALID ONE
MOVEI TT,(A) ;TYPE CHECK UNEVALUATED MATCHING ARG
LSH TT,-SEGLOG
TDNN T,ST(TT)
JRST CASEAQ ;NOT MATCH
CASEBZ: JSP TT,CASECK ;NON-SKIP IF MATCH
SKIPA
JRST CASE1G ;MATCH NOT FOUND
CASEM: POP P,A ;GET BACK POINTER TO CONS WITH MATCH
HLRZ A,(A)
MOVEM A,(P) ;CLOBBER MATCHING ARG WITH EXPR LIST
SETZ A, ;MAKE SURE RETURN NIL IF NOTHING TO DO
JRST COND2
CASECK: TLNN T,FX ;USE EQ FOR ATOMS, = FOR FIXNUMS
JRST CASEEQ
MOVE D,(A) ;GET THE FIXNUM
CAME D,@-1(P) ;CHECK USING =
JRST 1(TT) ;SKIP FOR FAILURE
JRST (TT)
CASEEQ: CAME A,-1(P) ;EQ CHECK
JRST 1(TT) ;SKIP FOR FAILURE
JRST (TT)
CASEAQ: WTA [DOES NOT MATCH MATCHING EXPRESSION TYPE!]
JRST CASE1H
CASE1C: POP P,A
WTA [DOES NOT MATCH MATCHING EXPRESSION TYPE!]
JRST CASE1D
IFN 0,[ ;TEMPORARILY(?) REMOVED
IF: PUSH P,A
HLRZ A,(A) ;TEST EXPRESSION
CAIE A,TRUTH
PUSHJ P,EVAL
POP P,B
HRRZ B,(B)
SKIPN A
JRST IF1A ;FOR FAILURE EVALUATE ALL REMAINING FORMS
HLRZ A,(B)
CAIE A,TRUTH
PUSHJ P,EVAL
POPJ P,
IF1A: PUSH P,B ;COND REQUIRES POINTER TO LIST ON STACK
JRST COND2
];END IFN 0
SUBTTL "SYSTEM" MACROS - SMALL FSUBR'S TO PARALLEL COMPILER MACROS
;;; CURRENTLY: PUSH, POP,
COMMENT | FOO! SOMETHING HAS TO GO!
SETF: PUSH P,A
JRST SETF1
SETF2S: PUSHJ FXP,SET0 ;Handle a symbol case as if it were SETQ
SETF5: HRRZ B,@(P) ;BASIC LOOP DOWN ARGLIST
HRRZ B,(B)
JUMPE B,POP1J
MOVEM B,(P)
SETF1: HLRZ A,@(P)
SKOTT A,LS
JRST SETF2S ;setting a symbol?
HLRZ A,(A)
SKOTT A,SY
JRST SETF3 ;Random format?
MOVEI B,QSTF.X ;or has SETF-X property?
PUSHJ P,GET1 ; then go slow route thru SETF3
JUMPN A,SETF3
MOVE B,@(P)
HLRZ A,B ;Else check if it is one of the simple
HLRZ A,(A)
JSP T,IC.RP ; forms that we can un-do by hand
JRST SETF1B
SETF2C: PUSH FXP,TT ;A "CARCDR"ING, with "icarcdrp" code in TT
PUSH P,B ; or else TT has -1 for PLIST
HLRZ A,B
HRRZ A,(A)
PUSHJ P,EVALCAR ;Compute <arg> in "(CARCDR <arg>)"
EXCH A,(P)
PUSHJ P,EVALCAR ;Compute <val> in "(SETF (CARCDR <arg>) <val>)"
MOVE B,A
POP P,A
POP FXP,TT
JUMPL TT,STF2C2
LDB D,[0606_30 TT] ;Code for the "tail" operation and
JUMPE D,STF2C1
LDB D,[2706_30 %CARCDR-2(D)] ; find the "boy" number for it
JSP T,CARCDR(D) ;Execute the "tail" operation
STF2C1: TRNN TT,1_12. ;Bit 2.3 of code number is 1 iff
TDZA D,D ; "head" operation is RPLACD
MOVEI D,RPLACD-RPLACA
PUSHJ P,RPLACA(D)
JRST SETF5
STF2C2: PUSHJ P,SETPLIST
JRST SETF5
SETF1B: CAIE A,Q$GET ;Continue discerning for known operation
CAIN A,QCXR
JRST SETF2G ;GET, CXR
CAIN A,Q%ARRAYCALL
JRST SETF2A ;ARRAYCALL
SETO TT,
CAIN A,QPLIST
JRST SETF2C ;PLIST (A BIT LIKE CARCDR)
MOVE C,A
MOVEI B,QMACRO
PUSHJ P,GET1
JUMPN A,SETF1C
MOVE A,C
MOVEI B,QAUTOLOAD
PUSHJ P,GET1
JUMPE A,SETF3
PUSH P,A
MOVE A,C
MOVEI B,QLSTF.X
PUSHJ P,GETL5 ; BUT MAYBE WE'VE ALREADY TRIED TO AUTOLOAD?
POP P,T
JUMPE A,SETF3
MOVE A,T ;IF AUTOLOADABLE, MAY PUT A MACRO ON
PUSHJ P,AUTOLOAD ; SO LOAD IN THE AUTOLOADABLE FILE
MOVE A,C ; AND TRY AGAIN TO FIND MACRO PROP
MOVEI B,QMACRO
PUSHJ P,GET1
JUMPN A,SETF1C
MOVE A,C
MOVEI B,NIL
MOVEI C,QSTF.X
PUSHJ P,PUTPROP
JRST SETF3
SETF1C: HLRZ A,@(P)
CALLF 1,Q%MCX. ;MACROs (or STRUCTURE-selector ings)
JUMPE A,SETF3 ; - then merely MACROEXPAND-1* and go
HLRZ A,(A) ; around loop again
HRRZ B,@(P)
JSP T,%CONS
MOVEM A,(P)
JRST SETF1
SETF2A: HLRZ A,B
HLRZ B,(B)
PUSH P,A
PUSH P,B
JRST STF2A7
STF2A5: PUSHJ P,STOREE
STF2A7: SETZM LISAR
PUSHJ P,EVNH0 ;EVALUATE ARRAY REFERENCE WITHOUT HOOKING IT
SKIPN A,LISAR ;ALWAYS CHECK FOR THIS GROSS LOSS
JRST STF2A5
SKIPN V.RSET
JRST STF2A9
JSP T,ARYSIZ ;GET SIZE OF ARRAY IN WORDS IN TT
TLNN R,200000 ;=> NEGATIVE INDEX
CAIG TT,(R) ;THERE'S PROBABLY A FENCE-POST FOR SX ARRAYS HERE
JRST STF2A5
STF2A9: PUSH FXP,R
EXCH A,(P)
PUSHJ P,EVAL ;EVALUATE THE NEW VALUE
POP P,LISAR
POP FXP,R
JSP T,.STORE
POPI P,1
SETZM LISAR
CSETF5: JRST SETF5
SETF2G: PUSH P,CSETF5 ;"GET" OR "CXR"
HLRZ A,B
HRRZ A,(A) ; "(SETF (GET <arg1> <arg2>) <val>)
HRRZ B,(A)
PUSH P,B
PUSHJ P,EVALCAR ;Eval <arg1>
EXCH A,(P)
PUSHJ P,EVALCAR ;Eval <arg2>
PUSH P,A
HRRZ A,@-3(P)
PUSHJ P,EVALCAR ;Eval <val>
HLRZ T,@-3(P)
HLRZ T,(T)
CAIN T,Q$GET
JRST STF2G2
MOVE C,A
POP P,B
POP P,A
PUSHJ P,RPLACX ;REMEMBER return addr was pushed above
MOVE A,C
POPJ P,
STF2G2: MOVE B,A ; at SETF2G
POP P,C
POP P,A
JRST PUTPROP
EVALCAR: HLRZ A,(A) ;save a couple of instructons! by coming here
JRST EVAL
SETF3: POP P,A ;Can't hack it, so give up and let the
SETZ B, ; B=() ==> For Value
CALLF 2,QISTFX ; +INTERNAL-SETF-X expander expand it.
JRST EVAL ; and then do it.
| ;END OF DAMNABLE CUT-OUT OF SETF FSUBR
;;; Standard simple PUSH case (for symbols) is as follows:
; (DEFUN PUSH FEXPR (L)
; (DO ((X L (CDDR X)) (SYM) (VAL))
; ((NULL X) VAL)
; (SETQ SYM (CADR X) VAL (EVAL (CAR X)))
; (SET SYM (CONS VAL (SYMEVAL SYM)))))
;;; Standard simple POP case (for symbols) is as follows:
;(DEFUN POP FEXPR (X)
; (PROG2
; ()
; (COND ((NULL (CDR X)) (CAR (SYMEVAL (CAR X))))
; ('T (SET (CADR X) (CAR (SYMEVAL (CAR X))))))
; (SET (CAR X) (CDR (SYMEVAL (CAR X))))))
;;; Otherwise, we try substituting +INTERNAL-PUSH-X (or +INTERNAL-POP-X)
;;; for the "PUSH" (or "POP"), and let the (autoloadable) macro
;;; expander handle it.
$PUSHER: POP P,A
%WTA TNILER
$PUSH: JSP TT,FWNACK
FA2,,Q$PUSH
PUSH P,A ;SAVE THE ARGUMENT POINTER
PUSHJ P,CADR
JUMPE A,$PUSHER ;SPECIAL-CASE CHECK FOR NIL AND T
CAIN A,TRUTH
JRST $PUSHER
JSP T,SPATOM ;CHECK FOR STANDARD CASE
JRST $PUSH1
HLRZ A,@(P) ;GET THE "VALUE" TO BE PUSHED
PUSHJ P,EVAL ; AND EVALUATE IT
EXCH A,(P) ;SAVE THE RESULT, AND GET THE ARG POINTER
JSP T,%CADR ;GET THE SECOND "ARGUMENT"
PUSH P,A ;SAVE POINTER TO SYMBOL
PUSHJ P,EVSYM ;GET SYMBOL'S VALUE
JFCL ;IF SKIP RETURN USE NEW USER VALUE
MOVE B,-1(P) ;GET THE THING TO BE PUSHED
JSP T,%XCONS ;PUSH ON THE "STACK"
POP P,AR1 ;GET BACK POINTER TO SYMBOL
JSP T,.SET ;STORE BACK THE NEW "STACK" POINTER
POPI P,1
POPJ P,
$POPER: POP P,A
%WTA TNILER
$POP: JSP TT,FWNACK
FA12,,Q$POP
PUSH P,A
PUSHJ P,CDR
JUMPE A,$POP4
PUSHJ P,CAR
JUMPE A,$POPER
CAIN A,TRUTH
JRST $POPER
JSP T,SPATOM
JRST $POP1
$POP4: HLRZ A,@(P) ;GET THE "STACK" POINTER
JUMPE A,$POPER
CAIN A,TRUTH
JRST $POPER
JSP T,SPATOM
JRST $POP1
PUSHJ P,EVAL ;AND GET THE "STACK"
PUSH P,(A) ;SAVE THE 1ST CONS OF THE "STACK" ON P
HRRZ A,@-1(P) ;GET THE PLACE TO POP INTO
JUMPE A,$POP2 ;NOT SPECIFIED, JUST RETURN THE TOP OF "STACK"
HLRZ A,(A)
HLRZ AR1,(P) ;CAR OF STACK IS VALUE BEING POPPED
JSP T,.SET1 ;SET THE SYMBOL INTO WHICH IT IS POPPING
$POP2: HRRZ AR1,(P) ;NOW CDR THE "STACK" AND RE-SET INTO STK-PTR
HLRZ A,-1@(P)
JSP T,.SET1
HLRZ A,(P) ;RETURN THE CAR OF THE NEW "STACK"
POPI P,2
POPJ P,
$POP1: SKIPA C,[QIPOX] ;"PUSH" AND "POP" CANT BE HANDLED
$PUSH1: MOVEI C,QIPUX ; So invoke the LISP-coded +INTERNAL-foo-X
POP P,A ; which expands it for us
SETZ B, ; B=() means "For Value"
CALLF 2,(C)
JRST EVAL ;and EVAL the result
TNILER: SIXBIT \CANT "PUSH" OR "POP" TO T AND NIL!\
SUBTTL STORE, BREAK, SIGNP
STORE: JSP TT,FWNACK
FA2,,QSTORE
HLRZ B,(A)
PUSH P,B
HRRZ A,(A)
HLRZ A,(A)
PUSHJ P,EVAL ;EVALUATE SECOND ARGUMENT FIRST!
PUSH P,A
STORE7: HRRZ A,-1(P)
SETZM LISAR
PUSHJ P,EVNH0 ;EVALUATE ARRAY REFERENCE WITHOUT HOOKING IT
SKIPN A,LISAR ;ALWAYS CHECK FOR THIS GROSS LOSS
JRST STORE5
SKIPN V.RSET
JRST STORE9
JSP T,ARYSIZ ;GET SIZE OF ARRAY IN WORDS IN TT
TLNN R,200000 ;=> NEGATIVE INDEX
CAIG TT,(R) ;THERE'S PROBABLY A FENCE-POST FOR SX ARRAYS HERE
JRST STORE5
STORE9: POP P,A
SUB P,R70+1
JSP T,.STORE
SETZM LISAR
POPJ P,
BREAK: JSP TT,FWNACK ;FSUBR (1 . 2)
FA12,,QBREAK
HLRZ B,(A) ;BKPT NAME
HRRZ A,(A)
JUMPE A,$BRK0 ;NO SECOND ARG => ALWAYS BREAK
HLRZ A,(A) ;TO-BREAK-OR-NOT SWITCH
PUSH P,B
PUSHJ P,EVAL ;THIS IS A CROCK!!!
POP P,B
JRST $BREAK ;A = BREAKP, B = BREAKID
SIGNP: JSP TT,FWNACK ;FSUBR 2
FA2,,QSIGNP
PUSH P,(A)
HLRZ A,(A)
PUSH P,A
SIGNP0: PUSHJ P,PNGET
HLRZ A,(A)
MOVS T,(A)
HRRZ A,(A)
JUMPN A,SIGNPE
MOVNI A,6
CAIE T,@SPTB+6(A)
AOJL A,.-1
JUMPGE A,SIGNPE
HLLZ A,SPTB+6(A)
SUB P,R70+1
EXCH A,(P)
HLRZ A,(A)
PUSHJ P,EVAL
PUSHJ P,NUMBERP
JUMPE A,POP1J
POP P,T
HRRI T,TRUE
XCT T
JRST FALSE
SPTB:
IRP Q,,[L,E,LE,G,GE,N]
JUMP!Q TT,(ASCII \Q\)
TERMIN
SUBTTL PROG2, PROGN, EQ, RPLACA, RPLACD
PROG1: SKIPA R,XC-1
PROG2: MOVNI R,2
CAMLE T,R
JRST PRG12Z
HRLI T,-1(T)
ADD T,P
SUBM T,R
MOVE A,(R)
MOVEM T,P
POPJ P,
PRG12Z: MOVEI D,QPROG2
CAIE R,2
MOVEI D,QPROG1
JRST WNALOSE
PROGN: AOJG T,FALSE
POP P,A
PROGN1: JUMPE T,CPOPJ
HRLI T,-1(T)
ADD P,T
POPJ P,
EQ: CAMN A,B ;SUBR 2 - POINTER IDENTITY PREDICATE
JRST TRUE
JRST FALSE
RPLACA: SKOTT A,LS
JRST RPLCA0
TLNE TT,PUR+VC
JRST RPLCA1
HRLM B,(A)
POPJ P,
RPLACD: ;SUBR 2 - CLOBBER CDR OF FIRST ARG WITH SECOND
SKOTT A,LS
JRST RPLCD2
TLNE TT,PUR
JRST RPLCD1
RPLCD3: HRRM B,(A)
POPJ P,
RPLCD2: JUMPE A,RPLCD0 ;(RPLACD NIL FOO) IS ALWAYS A LOSS
SKIPE T,VCDR
CAIN T,QLIST ;IF CDR = NIL OR LIST, THEN BOMBOUT
JRST RPLCD0 ;SINCE ARG IS NOT LIST OR NIL
CAIN T,QSYMBOL
TLNE TT,SY
JRST RPLCD3 ;IF NOT CDR = SYMBOL, THEN ANYTHING GOES
JRST RPLCD0
PGTOP EVL,[EVAL, APPLY, STUFF OPEN-CODED BY COMPLR]
$INSRT GCBIB ;GARBAGE COLLECTOR AND ALLOCATION STUFF
$INSRT READER ;READ AND RELATED FUNCTIONS
$INSRT ARRAY ;ARRAY PACKAGE
$INSRT FASLOA ;FASLOAD
$INSRT QIO ;NEW MULTIPLE FILE I/O FUNCTIONS
SUBTTL INTERRUPT HANDLERS
PGBOT INT
IFN ITS,[
PIHOLD: .SPICLR,,R70 ;WORD TO ".SUSET" TO TURN OFF INTERRUPT SYSTEM
PINBL: .SPICLR,,XC-1 ;WORD TO ".SUSET" TO TURN ON INTERRUPT SYSTEM
;;; NEW-STYLE INTERRUPT TRANSFER VECTOR
.SEE IMASK
;;; STANDARD VALUES TO PUT IN .MASK AND .MSK2 USER VARIABLES.
;;; INTERRUPTS NORMALLY ENABLED ARE:
;;; PARITY ERROR
;;; WRITE INTO READ-ONLY MEMORY
;;; MEMORY PROTECTION VIOLATION
;;; ILLEGAL OPERATION
;;; PDL OVERFLOW
;;; I/O CHANNEL ERROR
;;; RUN TIME CLOCK
;;; REAL TIME CLOCK
;;; ALSO, FOR THE USELESS SWITCH:
;;; CLI DEVICE INTERRUPT
;;; SYSTEM GOING DOWN/REVIVED
;;; SYSTEM BEING DEBUGGED
;;; CONTROL OF TTY JUST GIVEN BACK TO LISP
;;; (SSTATUS MAR) MAY ALSO ENABLE THE MAR INTERRUPT
.SEE SSMAR
SA% STDMSK=%PIPAR+%PIWRO+%PIMPV+%PIILO+%PIPDL+%PIIOC+%PIRUN+%PIRLT
SA$ STDMSK=%PIMAI+%PIPAR+%PIWRO+%PIMPV+%PIILO+%PIPDL+%PIIOC+%PIRUN+%PIRLT
IFN USELESS, STDMSK=STDMSK+%PIDWN+%PIDBG+%PIATY
DBGMSK=STDMSK-<%PIPAR+%PIMPV+%PIILO+%PIATY>
;;; ALL I/O CHANNELS ARE ENABLED, AND ALL JOB CHANNELS FOR USELESS SWITCH.
STDMS2==177777
IFN JOBQIO, STDMS2==STDMS2+<377,,>
DBGMS2==STDMS2
DEFINE INTGRP HANDLER+PIRQC=0,IFPIR=0,DF1=STDMSK+%PIMAR-<%PIPDL+%PIPAR+%PIWRO+%PIMPV+%PIILO>,DF2=STDMS2
PIRQC
IFPIR
DF1
DF2
HANDLER
TERMIN
INTVEC: D_6+3,,INTPDL ;PDL FOR PUSHING INTERRUPT STUFF
;ACS D, R, F ARE SAVED ALONG WITH OTHER CRUD
SA$ INTGRP MEMERR,PIRQC=%PIMAI+%PIPAR+%PIWRO+%PIMPV+%PIILO,DF1=STDMSK+%PIMAR-%PIPDL ;MEMORY AND OPCODE ERRORS
SA% INTGRP MEMERR,PIRQC=%PIPAR+%PIWRO+%PIMPV+%PIILO,DF1=STDMSK+%PIMAR-%PIPDL ;MEMORY AND OPCODE ERRORS
SA$ INTGRP MAIINT,PIRQC=%PIPDL ;SAIL MAIL INTERRUPT
INTGRP PDLOV,PIRQC=%PIPDL ;PDL OVERFLOW
INTGRP IOCERR,PIRQC=%PIIOC ;I/O CHANNEL ERROR
IFN USELESS, INTGRP CLIINT,PIRQC=%PICLI ;CLI INTERRUPT
IFN USELESS, INTGRP TTRINT,PIRQC=%PIATY ;TTY RETURNED TO JOB
IFN USELESS, INTGRP SYSINT,PIRQC=%PIDWN+%PIDBG ;SYS DOWN OR BEING DEBUGGED
IFN JOBQIO, INTGRP JOBINT,IFPIR=[377,,] ;INFERIOR PROCEDURES
INTGRP CHNINT,IFPIR=177777 ;I/O CHANNEL INTERRUPTS
TTYDF1==:.-3 .SEE UINT0
TTYDF2==:.-2
IFN USELESS, INTGRP MARINT,PIRQC=%PIMAR ;MAR BREAK
INTGRP RUNCLOCK,PIRQC=%PIRUN ;RUNTIME ALARMCLOCK
INTGRP REALCLOCK,PIRQC=%PIRLT ;REAL TIME ALARMCLOCK
LINTVEC==:.-INTVEC ;LENGTH OF INTERRUPT VECTOR
;;; NOTE THE EFFECT OF HAVING THE ALARMCLOCKS LAST:
;;; IOC AND CHANNEL INTERRUPT HAPPEN FIRST, BUT WHEN
;;; THE PION HAPPENS INSIDE UINT0 THE ALARMCLOCK GETS
;;; ITS TURN IMMEDIATELY. FURTHERMORE, THE REAL TIME
;;; CLOCK GETS SLIGHTLY HIGHER PRECEDENCE.
] ;END OF IFN ITS
IFN D20,[
;;; TOPS-20 INTERRUPT HANDLER
;;; INTERRUPTS NOMRALLY ENABLED ARE:
;;; PDL OVERFLOW
;;; ILLEGAL INSTRUCTION
;;; ILLEGAL MEMORY READ
;;; ILLEGAL MEMORY WRITE
;;; NONEXISTANT PAGE REFERENCE
;;; VARIOUS CHARACTERS ENABLED FOR INTERRUPTS:
;;; ^A, ^B, ^D, ^E, ^F, ^G, ^V, ^W, ^X, ^Z
;;; CHANNEL ASSIGNMENTS:
;;; 1) PDL OV
;;; 2) ILLEGAL INSTRUCTION, ILL MEM R & W, OTHER SYNC INTERRUPTS
;;; 3) ASYNCHRONOUS INTERRUPTS
DISMSK==0 ;GENERATE IMPORTANT INTERRUPTS MASK
IRP FOO,,[.ICPOV,.ICILI,.ICIRD,.ICIWR,.ICNXP]
DISMSK==DISMSK+<1_<35.-FOO>>
TERMIN
STDMSK==DISMSK ;GENERATE STANDARD INTERRUPT MASK
IRP FOO,,[.ICDAE]
STDMSK==STDMSK+<1_<35.-FOO>>
TERMIN
STDMSK==STDMSK+<770000,,007777> ;ALSO INCLUDE ALL USER ASSIGNABLE CHANNELS
DBGMSK==STDMSK ;FOR NOW, MASKS ARE EQUIVALENT
;CHANNEL TABLE (ASSIGNS A PRIORITY LEVEL AND HANDLER ADR TO EACH CHANNEL)
CHNTAB:
REPEAT 6, 3,,INTASS+<.RPCNT*3> ;FIRST 6 ASSIGNABLE INTERRUPTS
0 ? 0 ? 0 ;ARITHMETIC OVERFLOWS
1,,$PDLOV ;PLDOV
0 ? 0 ;E-O-F AND DATA-ERROR
0 ? 0 ? 0 ;RESERVED TO DEC
2,,INTILO ;ILLEGAL INSTRUCTION
2,,INTIRD ;ILLEGAL MEMORY READ
2,,INTIWR ;ILLEGAL MEMORY WRITE
0 ? 0 ? 0 ? 0 ;RESERVED, AND ?
2,,INTNXP ;NON-EXISTANT PAGE
0 ; CHANNEL 23. LOSES!
REPEAT CINTSZ-6, 3,,INTASS+<6+.RPCNT>*3 ;REMAINING ASSIGNABLE INTERRUPTS
IFN .-CHNTAB-36., WARN [WRONG NUMBER ENTRIES IN CHNTAB?]
;LEVEL TABLE - WHERE TO STORE PC FOR INTERRUPT AT EACH PI LEVEL
LEVTAB: 0,,INTPC1
0,,INTPC2
0,,INTPC3
;;; TOPS-20 INTERRUPT HANDLING ROUTINES
;;; CALLED AT STARTUP TO REINITIALIZE THE INTERRUPT SYSTEM
ENBINT: MOVEI 1,.FHSLF ;MANIPULATE OURSELVES
MOVE 2,[LEVTAB,,CHNTAB] ;INTERRUPT PC STORAGE TAB,,CHANNEL LOC TAB
SIR ;SPECIFY THE TABLES
SETZ T, ;LOOP OVER AND ASSIGN TTY INTERRUPT CHANNELS
ENBIN2: SKIPG 1,CINTAB(T) ;THIS ENTRY USED FOR TTY INTERRUPT?
JRST ENBIN1 ;NOPE, GO ON
MOVSS 1 ;CHARACTER GOES IN LEFT HALF
HRRI 1,(T) ;CHANNEL IN RIGHT HALF
CAIL T,6 ;RELOCTAION NECESSARY?
ADDI 1,24.-6 ;YES, MAKE REAL CHANNEL NUMBER
ATI ;ASSIGN TERMINAL INTERRUPT CHANNEL
ENBIN1: CAIGE T,CINTSZ-1 ;DONE?
AOJA T,ENBIN2
MOVEI 1,.FHSLF ;ENABLE APPROPRIATE CHANNELS
MOVE 2,[STDMSK] ;ENABLE STANDARD INTERRUPTS
MOVEM 2,IMASK ;THIS IS CURRENT INTERRUPT MASK
MOVEM 2,OIMASK ;THIS IS ALSO THE OLD-MASK
AIC
MOVEI 1,.FHSLF ;ENABLE OUR INTERRUPT SYSTEM
XCTPRO
EIR
SETZB 1,2 ;DON'T LEAVE RANDOMNESS IN PROTECTED ACS
NOPRO
POPJ P,
;REENABLES INTERRUPTS AFTER THEY HAVE BEEN DISABLED BY DALINT OR DISINT
REAINT: PUSH P,1
PUSH P,2
XCTPRO
AOSE INTALL ;DISABLED ALL INTS?
SKIPA 2,OIMASK ;NO, USE OLD INTERRUPT MASK
SKIPA 2,IMASK ;ELSE USE CURRENT MASK
MOVEM 2,IMASK ;THIS IS NOW THE CURRENT MASK
MOVEI 1,.FHSLF ;REENABLE INTERRUPTS FOR OURSELF
AIC
POP P,2
POP P,1
NOPRO
POPJ P,
;THIS ROUTINE DISABLES ALL INTERRUPTS FROM OCCURING
;THE FLAG INTALL IS SET SAYING TO TELL THE RE-ENABLE ROUTINE TO RESTORE
; INTERRUPTS FROM IMASK RATHER THAN OIMASK
WARN [THINK ABOUT USING 'DIR' FOR DALINT]
DALINT: PUSH P,1
PUSH P,2
XCTPRO
PISTOP
POP P,2
POP P,1
NOPRO
POPJ P,
;DISABLE ALL BUT IMPORTANT INTERRUPTS
;IMASK IS MOVED TO OIMASK, AND IMASK IS SETUP TO NEW CURRENT MASK VALUE
DISINT: PUSH P,1 ;WE WILL NEED TWO WORKING ACS
PUSH P,2
XCTPRO
MOVE 2,IMASK ;GET CURRENT INTERRUPT MASK
MOVEM 2,OIMASK ;UPDATE OLD MASK
AND 2,[DISMSK] ;ONLY ALLOW IMPORTANT INTERRUPTS
MOVEM 2,IMASK ;NEW MASK
MOVEI 1,.FHSLF
AIC ;MAKE SURE THE IMPORTANT INTERRUPTS ARE ON
SETCA 2,
DIC ;BUT ONLY THE IMPORTANT INTERRUPTS
POP P,2
POP P,1
NOPRO
POPJ P,
;;; DISMISS AN INTERRUPT
DSMINT:
XCTPRO
AOS DSMSAV ;POINT TO NEXT FREE LOCATION (A SMALL STACK)
MOVEM 1,@DSMSAV ;SAVE AC 1
MOVEI 1,.FHSLF ;TURN OFF SYSTEM INTS WHILE MUNGING INTPDL
DIR
MOVE 1,INTPDL ;NOW UNDO INTPDL
POP 1,F
POP 1,R
POP 1,D
POP 1,@-1(1) ;RESTORE RETURN PC
SUB 1,R70+1 ;THROW AWAY RETURN PC POINTER
POP 1,IMASK ;RESTORE OLD IMASK
SUB 1,R70+2
MOVEM 1,INTPDL
MOVEI 1,.FHSLF
EIR ;NOW ALLOW INTERRUPTS
MOVEI 1,.FHSLF
AOS DSMSAV ;SAVE AC 2 ON TOP OF STACK
MOVEM 2,@DSMSAV
MOVE 2,IMASK ;TELL TOPS-20 ABOUT OLD IMASK
AIC
MOVE 2,@DSMSAV ;RESTORE AC'S
SOS DSMSAV
MOVE 1,@DSMSAV
SOS DSMSAV
NOPRO
DEBRK ;THEN DISMISS THE CURRENT INTERRUPT
;;; INTPDL BUILDER: RETURNS INTPDL IN F, ACCEPTS PC POINTER ON FLP
INTSUP:
XCTPRO ;NEED PROTECTION AS WE WILL USE MARKED ACS
MOVEM 1,SUPSAV ;SAVE NEEDED REGISTER
MOVEI 1,.FHSLF ;TURN OFF THE INTERRUPT SYSTEM WHILE TOUCHING
DIR ; INTPDL
MOVE 1,INTPDL
PUSH 1,NIL ;IPSWD1 AND IPSWD2
PUSH 1,NIL
PUSH 1,IMASK ;IMASK UPON ENTRY
PUSH 1,F ;SAVE THE PC POINTER
HRRZS (1) ;BUT ONLY RH
PUSH 1,(F) ;AND SAVE THE PC
PUSH 1,D ;SAVE PRESERVED ACS
PUSH 1,R
HLRZS F ;RH NOW HAS ADR OF F
PUSH 1,(F) ;SAVES F
MOVE F,1 ;COPY OF INTPDL TO F
MOVEM F,INTPDL ;SAVE INTPDL
MOVEI 1,.FHSLF ;REEANBLE INTERRUPTS
EIR
MOVE 1,SUPSAV
NOPRO
JRST (T) ;RETURN TO CALLER
;;; THE ACTUAL INTERRUPT HANDLERS
;PDL OVERFLOW
$PDLOV: MOVEM T,PDLSVT ;SAVE T SO THAT WE HAVE AN AC TO USE
MOVE T,INTPDL ;FUDGE INTPDL STACK FRAME
PUSH T,NIL ;IPSWD1 AND IPSWD2 UNUSED
PUSH T,NIL
PUSH T,IMASK ;SAVE IMASK UPON ENTRY
PUSH T,LEVTAB ;RH IS INTERRUPT PC ADR, @ AND () FIELDS OFF
PUSH T,@LEVTAB ;SAVE PC
PUSH T,D
PUSH T,R
PUSH T,F
MOVEM T,INTPDL ;STORE NEW INTPDL POINTER
MOVE T,PDLSVT ;RESTORE AC T
JRST PDLOV ;THEN PROCESS PDL OV
;;; PRIORITY LEVEL 2 INTERRUPT HANDLERS
;INTERRUPT AFTER NEWLY CREATED PAGE
INTNXP: MOVEM T,LV2SVT
MOVE T,@LEVTAB+1
HLRZ T,(T) ;GET THE INSTRUCTION THAT CAUSED THE GRIEF
TRZ T,000037 ;ANY INDEX OR INDIRECTION IS OK
CAIE T,(SETMM) ;SPECIAL WAY TO CREATE A PAGE, SO ALL IS OK
JRST INTMPV ;OTHERWISE IS BAD NEWS
MOVE T,LV2SVT ;ELSE RESTORE T
DEBRK ;AND RETURN INSTANTLY
;ILLEGAL MEMORY READ
INTIRD: MOVEM T,LV2SVT ;TREAT ILLEGAL MEMORY READ AS MPV
;HERE ON MEMORY PROTECTION VIOLATION, T SAVED ON FXP
INTMPV: MOVEI T,%PIMPV ;TURN INTO AN MPV
JRST INTMER ;AND TREAT LIKE OTHER MEMORY ERRORS
;ILLEGAL MEMORY WRITE
INTIWR: MOVEM T,LV2SVT
MOVSI T,(%PIWRO) ;WRITE INTO READ-ONLY MEMORY
JRST INTMER
;ILLEGAL OP
INTILO: MOVEM T,LV2SVT
;;; SPECIAL CHECK FOR DELCH SYSTEM CALL FOR TENECIES THAT DON'T HAVE IT
;;; CAUSE SKIP RETURN
.SEE RUB1C1
SKIPN TENEXP ;A TENEX?
JRST INILO1 ;NOPE, NO SPECIAL CASE
HRRZ T,INTPC2 ;PC+1 OF INTERRUPT
MOVE T,-1(T) ;GET ACTUAL ILLEGAL INSTRUCTION
CAME T,[DELCH] ;THE DELCH JSYS?
JRST INILO1 ;NOPE, A LEGITIMATE ERROR THEN
MOVEI T,3 ;CAUSE A RETURN TO JSYS+4 (NON-DISPLAY TTY)
AOS INTPC2 ;ELSE CAUSE A
MOVE T,LV2SVT ;RESTORE T
DEBRK ;THEN RETURN TO MAINLINE
INILO1: MOVEI T,%PIILO ;ILLEGAL OPERATION
;COMMON MEMORY ERROR HANDLER, T IS PUSHED ON FXP AND CONTAINS THE ERROR BIT
;FUDGE INTPDL AND JRST OFF TO MEMERR
INTMER: MOVEM F,LV2SVF ;SAVE F IN KNOWN PLACE
MOVEM T,LV2ST2 ;ALSO SAVE FLAGS
MOVE F,[LV2SVF,,INTPC2] ;WHERE F IS,,WHERE PC IS
JSP T,INTSUP ;SETUP INTPDL, RETURN INTPDL IN F
MOVE T,LV2ST2 ;GET BACK FLAG BITS
MOVEM T,IPSWD1(F) ;STORE MEMORY ERROR BITS
MOVE T,LV2SVT ;RESTORE ACTUAL CONTENTS OF T
JRST MEMERR ;THEN PROCESS THE MEMORY ERROR
;;; ASSIGNABLE INTERRUPT HANDLER
INTASS:
REPEAT CINTSZ,[
MOVEM T,LV3SVT ;SAVE AC T
MOVEI T,.RPCNT ;INDEX INTO CINTAB
JRST ASSIN1 ;THEN USE COMMON CODE
]
ASSIN1: SKIPN CINTAB(T) ;ASSIGNED CHANNEL?
JRST ASSRET ;NOPE, RANDOM INTERRUPT; JUST RETURN
SKIPG CINTAB(T) ;'CHANNEL' INTERRUPT (A CHARACTER?)
HALT ;NO, SOME OTHER TYPE, BUT NONE SUPPORTED YET...
MOVEM F,LV3SVF
MOVE F,[LV3SVF,,INTPC3]
MOVEM T,LV3ST2 ;SAVE INTERRUPT TABLE INDEX
JSP T,INTSUP ;SETUP INTPDL
MOVE T,LV3ST2
HRRZ T,CINTAB(T) ;GET THE INTERRUPT CHARACTER
TRO T,400000 ;FLAG AS INTERNAL
MOVEM T,IPSWD2(F) ;STORE ON INTPDL
MOVE T,LV3SVT ;RESTORE ORIGIONAL CONTENTS OF T
JRST CHNINT ;THEN PROCESS THE CHANNEL INTERRUPT
ASSRET: MOVE T,LV3SVT ;RESTORE ORIGIONAL CONTENTS OF T
DEBRK ;THEN RETURN TO MAIN PROGRAM
] ;END IFN D20
IFN SAIL,[
;SAIL NEWIO INTERRUPT CODE
;CALLED TO REINITIALIZE THE INTERRUPT SYSTEM
ENBINT: MOVEI T,INTRPT ;FLAGS,,INTERRUPT LOCATION
MOVEM T,.JBAPR ;LOCATION SO MONITOR KNOWS
SETZM INTALL ;DID A 'DALINT' LAST (ALL INTS ARE MASKED)
SETOB T,REEINT ;ALL INTERRUPTS INCLUDING REENTER
SETOM REENOP ;BUT MUST SET BOTH FLAGS
IWKMSK T ;ALL GET US OUT OF IWAIT
INTMSK T ;ALL ARE MASKED ON
MOVE T,[STDMSK] ;ENABLE STANDARD INTERRUPTS
MOVEM T,IMASK ;THIS IS CURRENT INTERRUPT MASK
MOVEM T,OIMASK ;THIS IS ALSO THE OLD-MASK
INTENB T, ;TELL OPERATING SYSTEM WHICH INTS TO GENERATE
MOVEI T,REETRP ;REENTER TRAP ADR
MOVEM T,.JBREN ;ALLOW REENTER AS MEANS OF IOC INTERRUPT
POPJ P,
;REENABLES INTERRUPTS AFTER THEY HAVE BEEN DISABLED BY DALINT OR DISINT
REAINT: PUSH FXP,T
AOSE INTALL ;DISABLED ALL INTS?
SKIPA T,OIMASK ;NO, USE OLD INTERRUPT MASK
SKIPA T,IMASK ;ELSE USE CURRENT MASK
MOVEM T,IMASK ;THIS IS NOW THE CURRENT MASK
INTMSK T ;THEN UNMASK CORRECT SET OF INTERRUPTS
SKIPG REEINT
JRST REAIN1
MOVEI T,CPOPJ
MOVEM T,.JBOPC
POP FXP,T
JRST REETR1 ;FUDGE A REENTER IF ONE WAS REQUESTED
REAIN1: POP FXP,T
SETOM REEINT
POPJ P,
;DISABLE ALL BUT IMPORTANT INTERRUPTS
;IMASK IS MOVED TO OIMASK, AND IMASK IS SETUP TO NEW CURRENT MASK VALUE
DISINT: PUSH FXP,T ;WE WILL NEED A WORKING AC
MOVE T,IMASK ;GET CURRENT INTERRUPT MASK
MOVEM T,OIMASK ;UPDATE OLD MASK
ANDCM T,[INTPAR\INTPOV\INTILM\INTNXM] ;ONLY ALLOW THESE INTERRUPTS
MOVEM T,IMASK ;NEW MASK
INTMSK T ;TELL OPERATING SYSTEM
SETZM REEINT ;ALSO DISALLOW REENTERS
POP FXP,T
POPJ P,
;THIS ROUTINE DISABLES ALL INTERRUPTS FROM OCCURING
;THE FLAG INTALL IS SET SAYING TO TELL THE RE-ENABLE ROUTINE TO RESTORE
; INTERRUPTS FROM IMASK RATHER THAN OIMASK
DALINT: PISTOP
POPJ P,
;HERE TO PROCESS AN INTERRUPT
;OPERATING SYSTEM JUMPS TO HERE WITH ALL ACS SAVED AND SET UP WITH INTERRUPT
;STATUS; THE OBJECT IS TO SAVE INTERRUPT DEPENDANT DATA AND THEN REENABLE
;THE INTERRUPT SYSTEM AS SOON AS POSSIBLE....NOTE THAT THIS MUST DISABLE
;INTERRUPTS DEPENDING UPON WHICH ONE WAS GENERATED.
;--INTERRUPT-- --DISABLES--
;MEMORY ERROR ALL EXCEPT PDL OV
;<ESC>I <ESC>I AND REENTER
;PDL OV ALL EXCEPT MEMORY ERROR AND PDL OV
;CLOCK CLOCK
INTRPT: MOVE A,INTPDL ;DON'T WORRY ABOUT SPACEWAR BUTTONS
SETZM REENOP ;NO ^C/REENTER TRAPS NOW
MOVE B,.JBCNI ;GET INTERRUPT
PUSH A,B ;SAVE INTERRUPT CONDITIONS
PUSH A,10 ;SAVE ARGUMENT TO INTERRUPT (FOR <ESC>I)
PUSH A,IMASK ;DEFERRED INTERRUPT MASK CURRENTLY ACTIVE
JFFO B,.+1 ;GET INTERRUPT NUMBER INTO AC B+1
PUSH A,B+1 ;STORE THIS ON INTPDL
MOVE B+1,SAIIMS(B+1)
MOVEM B+1,IMASK
INTMSK B+1
PUSH A,.JBTPC ;SAVE ADR INTERRUPT EMANATES FROM
PUSH A,NIL ;SAVE DUMMY WORDS TO HOLD ACS D, R, F
PUSH A,NIL
PUSH A,NIL
MOVEM A,INTPDL ;THIS IS NEW INTERRUPT PDL POINTER
UWAIT ;UWAIT WILL RESTORE USER AC'S
EXCH F,INTPDL ;SAVE F, GET POINTER TO INTPDL
MOVEM D,IPSD(F) ;SAVE D
MOVEM R,IPSR(F) ;SAVE R
MOVE R,.JBTPC
MOVEM R,IPSPC(F) ;THE REAL RETURN PC
MOVEI R,(F) ;COPY INTPDL INTO R
EXCH F,INTPDL ;RESTORE STATE OF F AND INTPDL
MOVEM F,IPSF(R) ;THEN SAVE F
MOVE F,IPSDF2(R) ;GET BIT NUMBER
MOVE R,SAIIMS(F) ;THIS WILL BE NEW IMASK (F HAS INT NUMBER)
MOVEM R,IMASK
INTMSK R
DEBREAK ;NOW GO TO USER LEVEL BUT NOT TO USER PROGRAM
JRST @SAIDSP(F) ;DISPATCH ON INTERRUPT INDEX
;MAIL INTERRUPT
MAIINT: MAIL 3,
JRST DSMINT ;NO MAIL, SO DISMISS
JSP R,FNYINT
UIFSMI,,V.SMS
;DISMISS AN INTERRUPT
DSMINT: PUSH FXP,T
MOVE T,INTPDL
MOVE F,IPSDF1(T) ;RESTORE APR FLAGS TO THOSE AT INTERRUPT TIME
MOVEM F,IMASK
INTMSK F
POP T,F
POP T,R
POP T,D
PUSH P,(T) ;RETURN PC
POPI T,5
MOVEM T,INTPDL ;RESTORE INTPDL
POP FXP,T
SKIPL REEINT
HALT ;FOR DEBUGGING, THIS SHOULD NOT HAPPEN UNLESS
;CODE IS NOT PAIRED CORRECTLY
; (DISINT[DALINT]/REAINT)
SKIPG REENOP
POPJ P,
MOVEM T,REESVT ;WE NEED AT LEAST ONE AC
MOVE T,INTPDL ;USE T AS THE INTPDL
ADD T,R70+10 ;WE MUST RESERVE THE SPACE WE WILL NEED
MOVEM T,INTPDL
SUB T,R70+5 ;BUT LEAVE 4 DUMMY WORDS + 1 FOR PC
POP P,(T) ;PC IS THAT WHICH WE WILL POPJ TO
JRST REETR1
;INTERRUPT HANDLING ROUTINES (DISPATCHED TO VIA SAIDSP)
INTERR: OUTSTR [ASCIZ\AN ILLEGAL INTERRUPT HAS BEEN RECIEVED. THIS IS AN
INTERNAL LISP ERROR\]
HALT
PARINT: MOVSI R,(%PIPAR) ;FLAG THAT IS PARITY ERROR
JRST SAIMER
NXMINT: SKIPA R,[%PIMPV]
ILMINT: MOVSI R,(%PIWRO)
SAIMER: MOVE F,INTPDL ;INT PDL POINTER INTO F
MOVEM R,IPSWD1(F) ;STORE WHERE MEMERR CAN FIND BITS
JRST MEMERR ;PROCESS MEMORY ERROR
;HERE FOR <ESC>I INTERRUPT
EYEINT: MOVE F,INTPDL ;INT PDL POINTER INTO F
SETZB R,IPSWD2(F) ;FORCE EXTERNAL CALL
; MOVM R,IPSWD2(F) ;GET <ESC>I ARG (POSITIVE FORM ONLY)
; CAILE R,177 ;ONLY CHARACTERS UP TO 177 HAVE MEANING
; TDZA R,R ;FORCE R TO ZERO
; TLO R,400000 ;FLAG THAT THIS IS AN INTERNAL CALL
; MOVEM R,IPSWD2(F) ;RESTORE ARGUMENT TO CHNINT
CLRBFI
JRST CHNINT ;FUDGE THE CHANNEL INTERRUPT
;NEW INTERRUPT MASK BITS, INDEXED BY CURRENT INTERRUPT NUMBER
SAIIMS: 0 ? 0 ? 0 ? 0
INTPOV ;MAIL INTERRUPT
0 ? 0
INTPOV ;PAR ERROR: ONLY ALLOW PDL OV
-INTCLK-1 ;CLOCK INT: ALLOW ALL OTHERS
0 ? 0 ? 0 ? 0 ;NOT USED, IMP INTERRUPTS
-<INTCLK\INTTTI>-1 ;<ESC>I: ALL EXCEPT <ESC>I AND CLOCK
0 ;CHANGING QUEUES, NOT USED
INTPOV\INTILM\INTNXM\INTPAR\INTPOV ;PDL OV: ALL MEMORY ERRS AND PDL OV
0 ;PDP-11 INT, NOT USED
INTPOV ;ILM: ONLY PDL OV
INTPOV ;NXM: ONLY PDL OV
0 ? 0 ? 0 ;OVERFLOW AND OLD CLOCK TICK
;DISPATCH TABLE, INDEXED BY INTERRUPT NUMBER
SAIDSP:
REPEAT 6,INTERR ;INTERRUPT ERROR, THIS CANNOT HAPPEN
MAIINT
REPEAT 2,INTERR
PARINT ;PARITY ERROR
INTERR ;CLOCK INTERRUPT
INTERR ? INTERR ? INTERR ? INTERR ;VARIOUS IMP INTERRUPTS
EYEINT ;<ESC>I INTERRUPT
INTERR ? INTERR ? INTERR ;CHANGING QUEUES, UNUSED, UNUSED
PDLOV ;PDL OV
INTERR ? INTERR ;PDP-11 INTERRUPT, UNUSED
ILMINT ;ILL MEM REF
NXMINT ;NON-EXISTANT MEMORY
INTERR ? INTERR ? INTERR ;UNUSED, UNUSED, OLD CLOCK INT
INTERR ? INTERR ;UNUSED
INTERR ;FLOATING OVERFLOW
INTERR ? INTERR ;UNUSED
INTERR ;INTEGER OVERFLOW
REPEAT 4, INTERR ;UNUSED
] ;END IFN SAIL
IFN D10*<SAIL-1>,[
SUBTTL DEC-10 ONLY NEWIO INTERRUPT CODE
;***A NOTE OF CAUTION
;WHENEVER THE INTPDL IS TOUCHED, IT IS DONE SO IN A CERTAIN ORDER OF
;INSTRUCTIONS. THIS IS NECESSARY TO PREVENT TIMING ERRORS FROM SCREWING
;UP THE PDL SLOT ALLOCATION (THIS PREVENTS SAVED AC'S, FOR EXAMPLE, TO
;BE OVERWRITTEN BY NESTED INTERRUPTS). DO NOT CHANGE ANY ORDERING OF
;THIS CODE WITHOUT METICULOUS CHECKING TO SEE THAT RANDOM, ASYNCHRONOUS
;INTERRUPTS WILL NOT CAUSE TOTAL LOSSAGE.
;INTERRUPT ENABLING/DISABLING
;ENABLE NORMAL INTERRUPTS, CALLED AT STARTUP
ENBINT: MOVEI T,REETRP ;REENTER TRAP ADR
MOVEM T,.JBREN
MOVEI T,APRTRP ;THIS LOCATION FOR ALL APR TRAPS
MOVEM T,.JBAPR ;INFORM TOPS-10 VIA JOBDAT
MOVEI T,STDMSK
MOVEM T,IMASK ;THIS IS CURRENT INTERRUPT MASK
MOVEM T,OIMASK ;ALSO IS OLD INTERRUPT MASK
SETOM REEINT ;REENTER INTERRUPTS ARE OK
SETOM REENOP ;BUT MUST SET BOTH FLAGS
SETZM INTALL ;WE HAVEN'T DISABLED ALL INTERRUPTS
APRENB T,
POPJ P, ;NO OTHER TRAPS VIA THIS MECHANISM
;RE-ENABLE AFTER DISABLE INTERRUPTS
REAINT: PUSH FXP,T
AOSE INTALL ;DISABLED ALL INTS?
SKIPA T,OIMASK ;NO, USE OLD INTERRUPT MASK
SKIPA T,IMASK ;ELSE USE CURRENT MASK
MOVEM T,IMASK ;THIS IS NOW THE CURRENT MASK
APRENB T,
SKIPLE REENOP
JRST REAIN2
SKIPG REEINT
JRST REAIN1
REAIN2: MOVEI T,CPOPJ
MOVEM T,.JBOPC
POP FXP,T
JRST REETR1 ;FUDGE A REENTER IF ONE WAS REQUESTED
REAIN1: SETOM REEINT
SETOM REENOP
POP FXP,T
POPJ P,
;DISABLE ALL BUT IMPORTANT INTERRUPTS
DISINT: PUSH FXP,T
MOVE T,IMASK ;GET CURRENT MASK
MOVEM T,OIMASK ;REMEMBER IT FOR RESETING PURPOSES
ANDI T,AP.POV ;ONLY ALLOW IMPORTANT INTERRUPTS
MOVEM T,IMASK ;THIS IS CURRENT STATE OF SYSTEM
SETZM REEINT ;NO REENTER'S NOW
APRENB T,
POP FXP,T
POPJ P,
;DISABLE ALL INTERRUPTS
DALINT: PUSH FXP,T
SETOM INTALL ;HAVE DISABLED ALL INTERRUPTS
SETZB T,REEINT
APRENB T,
POP FXP,T
POPJ P,
;APR TRAP HANDLING
APRTRP: SETZM REENOP ;ABSOLUTLY NO ^C/REENTER INTERRUPTS NOW!
MOVEM T,APRSVT
SETZ T,
APRENB T, ;NO INTERRUPTS DURING TRAP SETUP
MOVE T,INTPDL ;USE T AS THE INTPDL
REPEAT 4, PUSH T, ;2 INTERRUPT WORDS AND 2 DEFFERED WORDS
PUSH T,.JBTPC ;INTERRUPT PC
PUSH T,D ;SAVE AC'S AS ITS INTERRUPT WOULD DO
PUSH T,R
PUSH T,F
MOVEM T,INTPDL
MOVE D,IMASK ;THIS IS GOING TO GO IN INT MASK1 WORD
MOVEM D,IPSDF1(T)
SETZ D,
MOVE F,.JBCNI ;GET ACTUAL PROCESSOR BITS
TRNE F,AP.PAR
TLO D,(%PIPAR) ;PARITY ERROR
TRNE F,AP.POV ;PDL OV?
JRST $PDLOV
TRNE F,AP.ILM ;PURE PAGE ERROR? (SHOULD THIS BE MPV?)
TLO D,(%PIWRO)
TRNE F,AP.NXM ;NON-EXISTANT MEMORY
TRO D,%PIMPV
MOVEM D,IPSWD1(T)
MOVE T,APRSVT
JUMPN D,MEMERR
OUTSTR [ASCIZ \UNRECOGNIZED APR INTERRUPT\]
HALT
$PDLOV: MOVE T,APRSVT
JRST PDLOV
;DISMISS AN INTERRUPT
DSMINT: PUSH FXP,T
MOVE T,INTPDL
MOVE F,IPSDF1(T) ;RESTORE APR FLAGS TO THOSE AT INTERRUPT TIME
MOVEM F,IMASK
APRENB F,
POP T,F
POP T,R
POP T,D
PUSH P,(T) ;RETURN PC
POPI T,5
MOVEM T,INTPDL ;RESTORE INTPDL
POP FXP,T
SKIPL REEINT
HALT ;FOR DEBUGGING, THIS SHOULD NOT HAPPEN UNLESS
;CODE IS NOT PAIRED CORRECTLY (DISINT[DALINT]/REAINT)
SKIPG REENOP
POPJ P,
MOVEM T,REESVT ;WE NEED AT LEAST ONE AC
MOVE T,INTPDL ;USE T AS THE INTPDL
ADD T,R70+10 ;WE MUST RESERVE THE SPACE WE WILL NEED
MOVEM T,INTPDL
SUB T,R70+5 ;BUT LEAVE 4 DUMMY WORDS + 1 FOR PC
POP P,(T) ;PC IS THAT WHICH WE WILL POPJ TO
JRST REETR1
];END IFN D10*<SAIL-1>
;THE FOLLOWING CODE IS FOR TOPS-10 AND SAIL
IFN D10,[
;HERE FOR A USER CHARACTER INTERRUPT, MAKE AN INTSTACK FRAME AND CALL CHNINT
UCHINT: SETZM REEINT ;DON'T ALLOW ^C/REENTERS TO GO THROUGH
MOVEM T,REESVT ;WE NEED AT LEAST ONE AC
MOVE T,INTPDL ;USE T AS THE INTPDL
ADD T,R70+10 ;MUST SET INTPDL TO AFTER ITS REAL USE SO THAT
;RECURSIVE INTERRUPTS USE DIFFERENT STACK AREAS
MOVEM T,INTPDL
SUB T,R70+4 ;WE WILL KEEP A DUMMY FOUR WORDS
PUSH T,[0,,CPOPJ] ;PC FLAGS 0 AS THEY MAY GET RESTORED BY JRST 2,
PUSH T,D ;SAVE AC'S AS ITS INTERRUPT WOULD DO
PUSH T,R
PUSH T,F
MOVEM D,IPSWD2(T)
MOVE D,IMASK ;PUT OLD IMASK IN WORD 1 MASK
MOVEM D,IPSDF1(T)
MOVE T,REESVT
SETOM REENOP
SETOM REEINT
JRST CHNINT
;REENTER TRAP ADR
REETRP: AOSG REENOP
AOSLE REEINT ;REENTER ALLOWED?
JRSTF @.JBOPC ;NOPE, FLAG AND GO ON
MOVEM T,REESVT ;WE NEED AT LEAST ONE AC
MOVE T,INTPDL ;USE T AS THE INTPDL
ADD T,R70+10 ;MUST SET INTPDL TO AFTER ITS REAL USE SO THAT
;RECURSIVE INTERRUPTS USE DIFFERENT STACK AREAS
MOVEM T,INTPDL
SUB T,R70+4 ;WE WILL KEEP A DUMMY FOUR WORDS
PUSH T,.JBOPC ;INTERRUPT PC
REETR1: PUSH T,D ;SAVE AC'S AS ITS INTERRUPT WOULD DO
PUSH T,R
PUSH T,F
SETZM IPSWD2(T) ;FORCE MASK TO ZERO AS IS USED SPECIALLY
MOVE D,IMASK ;STORE IMASK AS WORD1 MASK
MOVEM D,IPSDF1(T)
MOVE T,REESVT
SETOM REENOP
SETOM REEINT
JRST CHNINT
] ;END IFN D10
;;; WHEN THE INTERRUPT OCCURS, ACS D, R, AND F HAVE BEEN SAVED.
;;; BY CONVENTION AN INTERRUPT HANDLER MOVES THE INTPDL POINTER
;;; INTO F, GETS A VALID FXP POINTER INTO FXP, AND PUSHES THE OLD
;;; CONTENTS OF FXP ONTO THAT PDL.
;;; STANDARD INTERRUPT EXIT
;;; WILL RESTORE FXP AND D+R+F, AND DISMISS THE INTERRUPT.
INTXIT: MOVE FXP,(FXP) ;POP FXP,FXP
SKIPN NOQUIT ;CHECK FOR USER INTS STACKED BY INT HANDLER
SKIPN INTFLG .SEE CHECKI
JRST INTXT2
SKIPE GCFXP ;HOW CAN GCFXP BE NON-ZERO WITH NOQUIT ZERO?
.LOSE
PUSH FXP,IPSD(F) ;ARRANGE TO RESTORE D AND THE PC
PUSH P,IPSPC(F) ; (INCLUDING FLAGS!) AFTER CHECKING
PUSH P,CPXDFLJ ; FOR STACKED INTERRUPTS
MOVEI R,CKI0
MOVEM R,IPSPC(F)
INTXT2:
IFN D20+D10, JRST DSMINT ;DISMISS THE INTERRUPT
IFN ITS,[.CALL INTXT9 ;RETURN PC IS ON TOP OF INTPDL,
.LOSE 1000 ; AND ALSO THE OLD DEFER WORDS
INTXT9: SETZ
SIXBIT \DISMIS\ ;DISMISS INTERRUPT
5000,,D_6+3 ;POP ACS D, R, AND F FIRST
400000,,INTPDL ;INTERRUPT STACK POINTER
] ;END IFN ITS
;;; STANDARD LOSING INTERRUPT EXIT
;;; RESTORES FXP, AND D+R+F AS INTXIT DOES.
;;; ALSO EXPECTS A .LOSE ERROR CODE IN R.
INTLOS: MOVE FXP,(FXP) ;POP FXP,FXP
INTLS1:
IFN D10+D20, JRST DSMINT ;DISMISS THE INTERRUPT
IFN ITS,[.CALL INTLS9
.LOSE 1000
INTLS9: SETZ
SIXBIT \DISMIS\ ;DISMISS INTERRUPT
5000,,D_6+3 ;POP ACS D, R, AND F FIRST
,,INTPDL ;INTERRUPT STACK POINTER
,,IPSPC(F) ;NEW PC ;IN ORDER TO SPECIFY
,,IPSDF1(F) ;NEW .DF1 ; THE .LOSE CODE, ONE
,,IPSDF2(F) ;NEW .DF2 ; MUST MENTION ALL THIS TOO
400000,,R ;.LOSE ERROR CODE
] ;END IFN ITS
;;; EXIT INTERRUPT, GOING TO USER INTERRUPT HANDLER.
;;; ARGUMENT FOR THE UINT ROUTINE IS IN D.
;;; PDLS ARE IN GOOD SHAPE BY NOW, OF COURSE.
XUINT: SKIPE GCFXP ;BE EXTRA SURE ABOUT THE
IT$ .LOSE ; GOODNESS OF THE PDLS!
IFN <D10+D20>, HALT
;;;; POP FXP,FXP ;AT THIS POINT SHOULD BE SAME AS SUB FXP,R70+1
MOVE FXP,(FXP)
PUSH P,IPSPC(F) ;PUSH INTERRUPT PC ON STACK FOR UINT
PUSH P,CPXDFLJ ;ARRANGE FOR AC D AND FLAGS TO BE RESTORED
PUSH FXP,IPSD(F) ;PUSH AC D (BEFORE INTERRUPT) ON FXP
MOVEM D,IPSD(F) ;CAUSE D TO SURVIVE THE DISMIS
IFN D10+D20,[
MOVEI D,UINT ;NEW PC
MOVEM D,IPSPC(F) ;STORE WHERE OLD PC WENT
JRST DSMINT ;THEN DISMISS THE INTERRUPT
] ;END IFN D10+D20
IFN ITS,[.CALL XUINT9
.LOSE 1000
XUINT9: SETZ
SIXBIT \DISMIS\ ;DISMISS INTERRUPT
5000,,D_6+3 ;POP ACS D, R, AND F FIRST
,,INTPDL ;INTERRUPT STACK POINTER
1000,,UINT ;NEW PC
,,TTYDF1 ;NEW .DF1
400000,,TTYDF2 ;NEW .DF2
] ;END IFN ITS
;;; MEMORY AND OPCODE ERRORS: PARITY, PURE, MPV, ILOP.
;;; ASSUME NO MORE THAN ONE HAPPENS AT A TIME.
MEMERR:
IT$ .SUSET [.RJPC,,JPCSAV]
MOVE F,INTPDL
MOVE D,FXP
SKIPE GCFXP
MOVE FXP,GCFXP
PUSH FXP,D
MOVN R,IPSWD1(F) ;THIS SEQUENCE KILLS THE LOW-ORDER
ANDCA R,IPSWD1(F) ; BIT FROM THE INTERRUPT WORD
; FOR D10, WILL CONTAIN APR FLAGS OF MERIT
SKIPE R ;LOSE IF MORE THAN ONE BIT WAS SET
IT$ .LOSE
IFN D10+D20, HALT
MOVE R,IPSWD1(F)
HRRZ D,IPSPC(F)
IT$ CAIN D,THIRTY+5 ;DDT DOES X IN LOCATION 34
IT$ JRST $XLOSE
TLNE R,(%PI<PAR>) ;WAS IT A PARITY ERROR?
JRST PARERR
TLNE R,(%PI<WRO>) ;WRITE INTO READ-ONLY?
JRST PURPGI
TRNE R,%PI<ILO> ;ILLEGAL OPERATION?
JRST ILOPER
TRNN R,%PI<MPV> ;MEMORY PROTECT VIOLATION?
.VALUE ;NO??? WHAT HAPPENED???
CAIE D,UBD1 ;LET SPECPDL RESTORATION HAPPEN
JRST MPVERR ; EVEN IF ONE SLOT GOT CLOBBERED
AOS IPSPC(F) ;BUMP PC PAST OFFENDING INSTRUCTION
JRST INTXIT
MPVERR: SKIPA D,[UIMMPV]
PURERR: MOVEI D,UIMWRO
JRST MEMER5
ILOPER:
IFN D20,[
SKIPN TENEXP
JRST ILOPR1
; THIS A CRUFTY BUT ADEQUATE THEORY OF ERJMP'S
HLRZ R,0(D)
CAIE R,320700 ;ERJUMP?
JRST ILOPR1
HLRZ R,-1(D)
CAIE R,104000 ;JSYS?
JRST ILOPR1
HRRZ R,0(D)
HRRM R,IPSPC(F) ;CLOBBER RESTART ADDRESS
JRST INTXIT
ILOPR1:
] ;END IFN D20
SKIPA D,[UIMILO]
PARERR: MOVEI D,UIMPAR
MEMER5: HRRZ R,INTPDL ;MACHINE ERROR! WHAT TO DO?
CAIN R,INTPDL+LIPSAV ;IF THE ERROR HAPPENED WITHIN AN INTERRUPT SERVER,
SKIPN VMERR ; OR IF USER SUPPLIED NO ERROR FUNCTION,
JRST MEMER7 ; CRAP OUT BACK TO DDT
MOVEI D,100000(D)
HRL D,IPSPC(F)
PUSHJ FXP,$IWAIT
JRST XUINT ;CALL USER INTERRUPT HANDLER
; JRST INTXIT ;MAY RE-DO LOSING INSTR, BUT SO WHAT?
; THAT'S A FEATURE, NOT A BUG.
ANDI D,777
MEMER7:
IFN ITS,[
HRRZ R,MEMER8(D)
JRST INTLOS
MEMER8:
OFFSET -.
UIMPAR:: 1+.LZ %PIPAR
UIMILO:: 1+.LZ %PIILO
UIMWRO:: 1+.LZ %PIWRO
UIMMPV:: 1+.LZ %PIMPV
OFFSET 0
$XLOST: .VALUE [ASCIZ \: YOUR X LOST PROCEED \]
JRST THIRTY+5 ;LET THE X RETURN CORRECTLY
$XLOSE: MOVEI R,$XLOST ;CAUSE INTERRUPT DURING AN X
MOVEM R,IPSPC(F) ; TO GO TO $XLOST (CROCK)
JRST INTXIT
] ;END IFN ITS
IFE ITS,[
MOVEI A,MEMER8(D) ;TRANSFER TO ONE OF THE LER3'S BELOW
EXCH A,IPSPC(F)
ANDI A,-1
JRST INTXIT
MEMER8:
OFFSET -.
UIMPAR:: LER3 [SIXBIT \PC AT WHICH MEMORY PARITY ERROR OCCURRED!\]
UIMILO:: LER3 [SIXBIT \PC WITH ILLEGAL INSTRUCTION CODE!\]
UIMWRO:: LER3 [SIXBIT \PC AT WHICH ATTEMPT TO WRITE INTO PURE PAGE!\]
UIMMPV:: LER3 [SIXBIT \PC WITH MEMORY PROTECTION VIOLATION!\]
OFFSET 0
] ;END OF IFE ITS
;;; IFN D10,[
;;; OUTSTR @MEMER8(D) ;GIVE ERROR IF USER DOESN'T WANT IT
;;; EXIT 1,
;;; JRST .-2
;;; ] ;END IFN D10
;;;
;;; IFN D20,[
;;; HRRO 1,MEMER8(D) ;GIVE ERROR
;;; PSOUT
;;; HALTF ;THEN STOP EXECUTION NICELY
;;; ] ;END IFN D20
;;;
;;; IFN D10+D20,[
;;; MEMER8:
;;; OFFSET -.
;;; UIMPAR::[ASCIZ \?Parity error in job
;;; \]
;;; UIMILO::[ASCIZ \?Illegal op executed
;;; \]
;;; UIMWRO::[ASCIZ \?Write into read-only memory
;;; \]
;;; UIMMPV::[ASCIZ \?Memory protection violation
;;; \]
;;; OFFSET 0
;;; ] ;END IFN D10+D20
;;; I/O CHANNEL ERROR HANDLER
IFN ITS,[
IOCERR: MOVE F,INTPDL
MOVE R,FXP
SKIPE GCFXP
MOVE FXP,GCFXP
PUSH FXP,R
.SUSET [.RBCHN,,R]
.CALL SCSTAT
.LOSE 1400
LSH D,-33
HRRZ R,IPSPC(F)
MACROLOOP NIOCTR,ZZI,* ;ZZI MACROS DEFINE IOC TRAPS
SKIPL R
JRST IOCER8
IOCERA: HRRM R,IPSPC(F) ;CLOBBER RETURN PC
HLRZ R,R
CAIN R,400000+D ;WANT TO STICK IOC ERROR
MOVEI R,400000+IPSD(F) ; CODE INTO SPECIFIED AC,
CAIN R,400000+R ; BUT MUST BEWARE OF D AND R
MOVEI R,400000+IPSR(F)
MOVEM D,-400000(R)
JRST INTXIT
IOCER8: SKIPN IOCINS ;ANY USER IOC ERROR HANDLER?
JRST IOCER9 ;NOPE, LET DUPERIOR HAVE THE ERROR
MOVE R,IPSPC(F) ;PC IN R
;ERROR CODE IN D (SEE ABOVE)
;CALL USER WITH PC IN R AND ERROR CODE IN D.
;THE USER'S ROUTINE MUST NOT MUNG ANY AC'S OTHER THAN R AND D, THOUGH THE
;STACKS MAY BE USED. IF THE USER'S INSTRUCTION SKIPS, THE RIGHT
;HALF OF R CONTAINS THE PC TO DISPATCH TO AFTER THE DISMIS, AND THE LEFT HALF
;OF R CONTAINS 400000+<ADR IN WHICH TO STORE ERROR CODE>
PUSHJ FLP,@IOCINS
SKIPA
JRST IOCERA
IOCER9: MOVEI R,1+.LZ %PIIOC
JRST INTLOS
] ;END IFN ITS
;;; INTERRUPT FROM I/O CHANNEL.
;;; PRESENTLY ONLY TWO KINDS ARE HANDLED:
;;; TTY INPUT: INTERRUPT CHAR TYPED.
;;; TTY OUTPUT: **MORE**.
CHNINT: MOVE F,INTPDL
MOVE D,IPSWD2(F) ;GET WORD TWO INTERRUPT BITS
CHNIN2: MOVE R,FXP ;FXP MAY BE IN A BAD STATE IF
SKIPE GCFXP ; WITHIN GC, SO RESTORE IT AND
MOVE FXP,GCFXP ; THEN PUSH ITS OLD VALUE
PUSH FXP,R ;REMEMBER, PDL OVERFLOW ISN'T DEFERRED NOW
IFN ITS,[
MOVN R,D
AND R,D ;R GETS LaOWEST SET BIT
ANDCM D,R ;D GETS ALL OTHER BITS
SKIPE D
.SUSET [.SIIFPIR,,D] ;PUT ANY OTHER BITS BACK (THEY'RE DEFERRED)
MOVE D,R
JFFO D,.+1 ;FIND CHANNEL NUMBER
MOVNS R ; FOR SOME PENDING
ADDI R,43 ; INTERRUPT BIT
PUSH FXP,R ;SAVE CHANNEL NUMBER
SKIPN R ;CHANNEL 0 ??
JRST CHNI2 ;YES, THIS CAN HAPPEN IN STRANGE CASES
SKIPN CHNTB(R) ;UNOPEN DEVICE ??
.VALUE ;BUT DON'T ALLOW INTERRUPTS FROM CLOSED CHAN
CHNI1H: .CALL SCSTAT ;GET STATUS FOR THE CHANNEL
.VALUE
ANDI D,77 ;GET ITS INTERNAL PHYSICAL DEVICE TYPE
SKIPE D
CAILE D,2
JRST CHNI5
];END IFN ITS
IFN D10+D20,[
MOVE R,D
MOVE D,V%TYI
HLL D,ASAR(D) ;DOES "TYI" CONTAIN A TTY FILE ARRAY?
TLNN D,AS<FIL> ;IF NOT, THEN USE INITIAL TTY FILE ARRAY
JRST .+3
HLL D,TTSAR(D)
TLNN D,TTS<TY>
MOVEI D,TTYIFA
PUSH FXP,D ;SAR ADR ON STACK
] ;END IFN D10+D20
IFN ITS,[
HRRZ D,CHNTB(R)
MOVE D,TTSAR(D)
TLNE D,TTS<TY> ;IF IT'S NOT A TTY INPUT ARRAY, WE DON'T
TLNE D,TTS<IO> ;HAVE INTERRUPT CHAR DISPATCH TABLE
JRST CHNI5 ; SO JUST TREAT AS ENDPGFUN (I.E. RANDOM CHANL)
.ITYIC R, ;TYPE 0 IS TTY INPUT
JRST CHNI8 ;TIMING ERROR OR SOMETHING - IGNORE
] ;END IFN ITS
IFN D10,[
TRNE R,400000 ;IF NOT INTERNAL GET FROM USE
JRST CHNIZ ;ELSE WE HAVE ALREADY
OUTCHR ["?]
INCHRW R
SA$ TRO R,%TXCTL ;CONTROLLIFY THE CHARACTER
CHNIZ:
] ;END IFN D10
SA% IFN D10+D20, ANDI R,37 ;MAP ALL CHARS INTO CTRL CHARACTERS
SA$ ANDI R,777
PUSH FXP,R ;SAVE INTERRUPT CHARACTER
PUSH FXP,TT ; AND ALSO TT
HRRZ TT,-2(FXP) ;FETCH CHANNEL NUMBER
;FOR D-10, THIS IS ADR OF SAR
TTYI1:
IT$ HRRZ TT,CHNTB(TT)
HRRZ TT,TTSAR(TT)
IFN D10+D20,[
HRL TT,F.CHAN(TT) ;NOW GET CHANNEL #
HLRZM TT,-2(FXP) ;MAKE THE CHANNEL NUMBER CORRECT ON THE STACK
] ;END IFN D10+D20
JSP D,TTYICH ;GET BACK INTERRUPT FN IN R
POP FXP,TT
JUMPE R,CHNI2 ;NULL FUNCTION - IGNORE
MOVEI D,(R)
LSH D,-SEGLOG
MOVE D,ST(D)
TLNN D,FX
JRST CHNI4
MOVE R,(R) ;"FUNCTION" IS A FIXNUM
IFN ITS+SAIL,[
MOVEI D,(R) ;IF ANY OF THE SUPRA-ASCII
ANDCM D,(FXP) ; MODIFIER BITS ARE SET IN THE
MOVSS (FXP) ; "FUNCTION", INSIST THAT THE
ANDM R,(FXP) ; CORRESPONDING BITS APPEAR IN
MOVSS (FXP) ; THE CHARACTER TYPED. SIMILARLY,
IOR D,(FXP) ; THE SAME BITS SET IN THE LEFT HALF
TRNE D,%TX<MTA+CTL+TOP+SFT+SFL> ; MEAN THAT THOSE BITS MUST BE OFF.
JRST CHNI2
] ;END IFN ITS+SAIL
ANDI R,177
MOVEI D,TRUTH ;MOOOOBY SKIP CHAIN OF SYSTEM INTS
CAIN R,^A ;^A (SETQ ^A T)
HRRZM D,SIGNAL
IT$ CAIN R,^C ;^C (SETQ ^D NIL)
IT$ SETZM GCGAGV
CAIN R,^D ;^D (SETQ ^D T)
HRRZM D,GCGAGV
CAIN R,^G ;^G (^G) ;QUIT
JRST CN.G
IFE D20,[
CAIN R,^R ;^R (SETQ ^R T)
HRRZM D,TAPWRT
CAIN R,^T ;^T (SETQ ^R NIL)
SETZM TAPWRT
] ;END OF IFE D20
CAIN R,^V ;^V (SETQ ^W NIL)
SETZM TTYOFF
CAIN R,^W ;^W (PROG2 (SETQ ^W T)
JRST CN.W ; (CLEAR-OUTPUT T))
CAIN R,^X ;^X (ERROR 'QUIT) ;^X QUIT
JRST CN.X
CAIN R,^Z ;^Z CRAP OUT TO DDT
JRST CN.Z
CHNI2: SUB FXP,R70+2
JRST INTXIT
CHNI4: POP FXP,D ;REAL LIVE USER INTERRUPT FUNCTION
TRO D,400000 ;2.9 => TTY INPUT INTERRUPT CHAR
CHNI4A: POP FXP,R
HRL D,CHNTB(R)
SKIPE UNREAL
JSP R,CHNI4C ;BARF! (NOINTERRUPT 'TTY) OR (NOINTERRUPT T)
PUSHJ FXP,$IWAIT ;CALLS UISTAK AND SKIPS IF IN GC
JRST XUINT ;RUNS USER INTERRUPT
JRST INTXIT
IFN ITS,[
CHNI5: HRRZ D,CHNTB(R) ;CHECK OUT FILE ARRAY
HRRZ D,TTSAR(D)
SKIPN FO.EOP(D) ;SKIP IF ENDPAGEFN
JRST CHNI8
MOVEI D,200000+<2*FO.EOP+1> ;2.8 => RANDOM FILE INTERRUPT
JRST CHNI4A ;**MORE** => ENDPAGEFN GETS RUN
CHNI8: SUB FXP,R70+1
JRST INTXIT
];END IFN ITS
;;; ROUTINE TO STACK UP INTERRUPT IN INTAR -- USED BY CHNINT, JOBINT, AND FNYITN
CHNI4C: MOVE F,UNREAR ;STACK UP INTERRUPT IN THE
CAIL F,LUNREAR ; NOINTERRUPT QUEUE
JRST TMDAMI ;OOPS! TOO MANY DAMN INTERRUPTS!
MOVE F,[400000+LUNREAR-1,,UNREAR+LUNREAR-2]
CHNI4H: POP F,1(F)
TLNE F,377777
JRST CHNI4H
MOVEM D,UNREAR+1
AOS UNREAR
HRRZ F,INTPDL
JRST 2(R)
; COMMENT FOR @ CHANGE
IFN JOBQIO,[
;;; INTERRUPT FROM INFERIOR PROCEDURE(S)
JOBINT: MOVE F,INTPDL
MOVE D,IPSWD2(F)
MOVE R,FXP
SKIPE GCFXP ;IF IN GC, FXP MAY BE
MOVE FXP,GCFXP ; SCREWED UP
PUSH FXP,R
MOVN R,D
AND R,D ;R GETS LOWEST SET BIT
ANDCM D,R ;D GETS ALL OTHER BITS
SKIPE D
.SUSET [.SIIFPIR,,D] ;PUT ANY OTHER BITS BACK (THEY'RE DEFERRED)
MOVE D,R
JFFO D,.+1
MOVNS R ;-22 < R < -11
SKIPN D,JOBTB+21(R)
.VALUE ;NO JOB ARRAY???
HRRZ R,TTSAR(D)
SKIPN J.INTF(R)
JRST INTXIT ;NO INTERRUPT FUNCTION - IGNORE INTERRUPT
MOVSI D,(D)
TRO D,200000+<2*J.INTF+1>
SKIPGE UNREAL
JSP R,CHNI4C ;GORP! (NOINTERRUPT T)
PUSHJ FXP,$IWAIT
JRST XUINT
JRST INTXIT
] ;END OF IFN JOBINT
;;; TTSAR OF TTY INPUT FILE ARRAY IN TT.
;;; INPUT INTERRUPT CHARACTER IN R.
;;; RETURN ADDRESS IN D.
;;; RETURNS INTERRUPT FUNCTION IN R.
TTYICH:
IT$ TRZ R,%TX<TOP+SFL+SFT+MTA> ;FOLD 12.-BIT CHAR
SA$ ANDI R,777
SA% TRZN R,%TX<CTL> ; DOWN TO 7 IF NECESSARY
SA% JRST TTYIC1
SA% CAIE R,177
SA% TRZ R,140
TTYIC1: ROT R,-1 ;CLEVER ARRAY ACCESS
ADDI TT,FB.BUF(R) ;INTERRUPT FNS ARE IN "BUFFER"
HLR R,(TT)
SKIPGE R
HRRZ R,(TT) ;SIGN BIT OF R GETS CLEARED
JRST (D)
SUBTTL VARIOUS SYSTEM TTY INPUT CHAR INTERRUPT HANDLERS.
CN.W: HRRZM D,TTYOFF ;IMMEDIATE TTYOFF (^W)
PUSH FXP,T
PUSH FXP,TT
HRRZ TT,V%TYO
MOVE T,ASAR(TT)
TLNN T,AS.FIL ;Is "TYI" a File Array?
MOVEI TT,TTYIFA ; If not, substitute initial TTY file array
MOVE TT,TTSAR(TT)
TLNE TT,TTS<TY> ;IFF it's a TTY
PUSHJ FXP,CLRO3 ; ALSO DO (CLEAR-OUTPUT T)
CN.W0: POP FXP,TT
POP FXP,T
JRST CHNI2
IFN D20,[
CN.Z: PUSH FXP,T
PUSH FXP,TT
MOVEI T,CN.Z0 ;RETURN TO SUPERIOR (MAY BE IDDT)
MOVE TT,INTPDL
EXCH T,IPSPC(TT)
MOVEM T,CN.ZX
POP FXP,TT
POP FXP,T
JRST CHNI2 ;ALPT$G PROCEEDS
CN.Z0: HALTF
ALTP: JRST 2,@CN.ZX
] ;END IFN D20
IFN D10,[
CN.Z: SKIPE R,.JBDDT ;ANY DDT IN CORE?
JRST (R)
EXIT 1, ;RETURN TO MONITOR IF NO DDT, CONT CONTINUES
ALTP: JRST CHNI2 ;PROCEED ON ALTP$G
] ;END IFN D10
IFN ITS,[
CN.Z: PUSH FXP,TT ;WE NEED ONE AC TO HOLD CHANNEL NUMBER
HRRZ TT,-2(FXP)
.CALL CKI2I
.VALUE
POP FXP,TT
.VALUE [ASCIZ \:DDT<1B>\]
JRST CHNI2
CKI2I: SETZ
SIXBIT \RESET\
400000,,TT
] ;END IFN ITS
CTRLG: HRROI D,-3 ;^G - SUBR 0
PIPAUSE ;DISABLE THE INTERRUPT SYSTEM FOR NOW
SETZM UNREAR ;CLEAR OUT ALL STACKED INTERRUPTS
SETZM INTAR
HRREM D,INTFLG
SKIPE NOQUIT ;HOW CAN NOQUIT BE NON-ZERO?
IT$ .LOSE ; MAYBE THE USER SCREWED UP
IFN D10+D20, HALT
JRST CKI0 ;PROCESS THE FORCED QUIT
CN.X: SKIPA D,[-6] ;ERRSETABLE (^X) QUIT
CN.G: HRROI D,-7 ;IMMEDIATE (^G) QUIT
SKIPE UNREAL
JRST CN.G1
SETZM INTAR ;KILL ALL INTERRUPTS STACKED UP
HRREM D,INTFLG
PUSHJ FXP,$IWAIT
SKIPA D,[CKI0]
JRST CHNI2 ;CAN'T PROCESS QUIT NOW
MOVEM D,IPSPC(F) ;IF CAN QUIT NOW, ARRANGE FOR SERVER
JRST CHNI2 ; TO RETURN TO INTERRUPT CHECKER
CN.G1: SETZM UNREAR ;KILL STACKED UNREAL INTERRUPTS
EXCH D,UNRC.G ;ELSE STACK UP AN UNREAL
TRNE D,1 ; ^G OR ^X INTERRUPT
MOVEM D,UNRC.G ;DON'T LET A ^X DISPLACE A ^G
JRST CHNI2
IFN ITS\SAIL,[
IFN USELESS,[
FNYINT: MOVE F,INTPDL ;COMMON HANDLER FOR FUNNY INTERRUPTS
MOVE D,FXP
SKIPE GCFXP
MOVE FXP,GCFXP
PUSH FXP,D
MOVE R,(R)
SKIPN (R)
JRST INTXIT ;EXIT IF NO USER HANDLER
HLRZ D,R
CAIE D,UIFTTR ;SPECIAL HACK FOR TTY-RETURN
JRST FNYIN0
HRRZ R,IPSPC(F) ;GET PC OF INTERRUPT
IFN ITS,[
CAIE R,TYICAL ;INTERRUPTED FROM CANONICAL INPUT WAIT?
CAIN R,TYICA1
HRLI D,Q$IN ;YES, ARG TO INT FUN IS 'IN
] ;END OF IFN ITS
CAIN R,TYIXCT ;ANOTHER CANNONICAL PLACE
HRLI D,Q$IN
FNYIN0: SKIPGE UNREAL
JSP R,CHNI4C ;MUST STACK UP IF UNREAL
] ;END OF IFN USELESS
RCLOK2: PUSHJ FXP,$IWAIT ;WILL STACK AND SKIP IF GC
JRST XUINT ;GIVE USER CLOCK INTERRUPT
JRST INTXIT
] ;END OF IFN ITS\SAIL
IFN ITS,[
;;; REAL TIME ALARMCLOCK
REALCLOCK:
MOVSI R,400000 ;SHUT CLOCK BACK OFF
.REALT R,
MOVEI R,Q$TIME
JRST RCLOK1
;;; RUNTIME ALARMCLOCK
RUNCLOCK:
MOVEI R,Q$RUNTIME
RCLOK1: MOVE F,INTPDL
MOVE D,FXP
SKIPE GCFXP
MOVE FXP,GCFXP
PUSH FXP,D
SKIPN VALARMCLOCK ;IGNORE IF THERE IS NO
JRST INTXIT ; ALARMCLOCK FUNCTION
MOVSI D,(R) ;TYPE 0, SUBTYPE 0 IS ALARMCLOCK
SKIPL UNREAL ;SKIP IF (NOINTERRUPT T)
JRST RCLOK2
MOVEM D,UNRRUN-Q$RUNTIME(R) ;STACK UP INTERRUPT
JRST INTXIT
IFN USELESS,[
;;; CLI INTERRUPT HANDLER
CLIINT: JSP R,FNYINT
UIFCLI,,VCLI
;;; RETURN OF TTY TO THE JOB
TTRINT: JSP R,FNYINT
UIFTTR,,VTTR
;;; SYSTEM GOING DOWN OR BEING DEBUGGED
SYSINT: JSP R,FNYINT
UIFSYS,,VSYSD
;;; MAR BREAK
MARINT: MOVEI R,%PIMAR
ANDCAM R,IMASK
.SUSET [.SMASK,,IMASK]
.SUSET [.SMARA,,R70]
MOVEI R,1+.LZ %PIMAR
SKIPN VMAR
JRST INTLS1 ;IN CASE (STATUS MAR) GETS LOUSED UP
JSP R,FNYINT
UIFMAR,,VMAR
] ;END OF IFN USELESS
] ;END IFN ITS
;;; STACK UP A USER INTERRUPT WHICH MUST BE DELAYED.
;;; ARGUMENT IS IN D AS FOR UINT; IT IS SAVED IN THE INTAR QUEUE.
;;; ASSUMES FREE USE OF ACCUMULATOR R.
;;; PI INTERRUPTS MUST BE DISABLED!!!!
.SEE PIOF
YESIN1: POP P,UISTAK ;THIS IS A HORRIBLE CROCK
;UISTAK: 0
UISTK1: MOVE R,INTFLG ;IF WE ARE ABOUT TO QUIT ANYWAY,
AOJL R,@UISTAK ; THEN FORGET THE WHOLE THING
AOS R,INTAR
CAILE R,LINTAR
JRST TMDAMI ;TOO MANY DAMN INTERRUPTS
MOVE R,[400000+LINTAR-1,,INTAR+LINTAR-2]
UISTK2: POP R,1(R)
TLNE R,377777
JRST UISTK2
MOVSM D,INTAR+1
SETOM INTFLG
JRST @UISTAK
TMDAMI: SKIPN GCFXP ;TOO MANY DAMN INTERRUPTS
JRST TMDAM2
IRP X,,[P,FLP,FXP,SP]
MOVE X,GC!X
TERMIN
TMDAM2:
; LERR [SIXBIT \TOO MANY DEFERRED INTERRUPTS!\]
IFN ITS,[
.VALUE [ASCIZ \:TOO MANY DEFERRED INTERRUPTSCONTIN<16>\]
.LOSE
] ;END OF IFN ITS
10$ OUTSTR [ASCIZ \TOO MANY DEFERRED INTERRUPTS\]
10$ EXIT 1,
10$ JRST .-1
IFN D20,[
HRROI 1,[ASCIZ \
?Too many deffered interrupts
\]
HALTF
] ;END IFN D20
;QMARK -- THIS IS HERE SO BAKTRACE WILL FIND IT AS LAST SUBR (ARGG!!)
QMARK: MOVEI A,QM
POPJ P,
;;; PURE PAGE TRAP HANDLER
;;; COMES HERE WITH LOSING PC IN D.
.SEE MEMERR
PURPGI:
IFN D10*<1-SAIL>,[
SKIPE KA10P
SOSA D,IPSPC(F) ;MAKE PC POINT TO OFFENDING INSTRUCTION
SKIPA
ANDI D,-1
] ;END OF IFN D10*<1-SAIL>
IFN D20,[
SKIPN TENEXP ;IF TENEX, PC MIGHT NOT BE RIGHT
JRST PURPGA
PUSH FXP,1
PUSH FXP,2
MOVEI 1,.FHSLF
GTRPW ;GET TRAP STATUS INTO 1, WRITE DATA INTO 2
TLNN 1,000010 ;BIT 14 - READ REQUEST
TLNN 1,000004 ;BIT 15 - WRITE REQUEST
SKIPA ;READ RQ, OR NO WRITE RQ -- PC IS OK
SOS D,IPSPC(F) ;ONLY WRITE RQ, POINT TO ACTUAL INSTRUCTION
HRRZS D ;CLEAR GARBAGE FROM LEFT HALF
POP FXP,2 ;RESTORE AC'S
POP FXP,1
PURPGA:
] ;END IFN D20
CAIN D,STQPUR
JRST PPGI5
PPGI5A:
IFN PAGING,[
MACROLOOP NPURTR,ZZP,*, ;ZZP MACROS DEFINE WHAT PLACES HAVE HANDLERS
] ;END IFN PAGING
JUMPGE D,PURERR
PPGI3:
HRRM D,IPSPC(F)
JRST INTXIT
PPGI5: HRRZS A ;FORGET LEFT HALF
CAIN A,PWIOINT ;BINDING INTERRUPT INHIBITS: NORMAL PURTRAP
JRST PPGI5A
MOVEM A,STQLUZ ;REMEMBER WHICH VALUE CELL WE TRIED TO GRONK
MOVE D,[TIRPATE,,NIL]
MOVEM D,(SP)
SKIPE GCFXP
.VALUE
AOS IPSPC(F) ;DON'T RETRY THE LOSING INSTRUCTION!
PUSHJ FXP,$IWAIT ;LET SPDL GET CAUGHT UP
SKIPA T,STQLUZ ;ERROR HANDLER WANTS LOCATION IN T
JRST PURERR ;INTWAIT MAY SKIP
PPGI6: HRRZI D,NILSETQ ;TRIED TO PUT A VALUE PROPERTY ON NIL
JRST PPGI3
SUBTTL USER INTERRUPT ROUTINES
;;; USER INTERRUPT TYPES FOR NEWIO
;;;
;;; FORM OF ARGUMENT TO UINT (ALSO STORED IN THIS FORM
;;; IN INTAR, ONLY WITH HALVES SWAPPED; WHY, I DON'T KNOW):
;;;
;;; 4.9-3.1 ARGUMENT FOR INTERRUPT FUNCTION
;;; 2.9 IF 1, SPECIFIES A TTY INPUT CHARACTER INTERRUPT.
;;; ARGUMENT IS TTY INPUT FILE ARRAY.
;;; 2.8-2.4 MUST BE ZERO.
;;; 2.3-1.1 CHARACTER WHICH CAUSED INTERRUPT, AS
;;; READ BY .ITYIC. THIS MAY BE A 12.-BIT
;;; CHARACTER, AND SO MAY HAVE TO BE FOLDED
;;; BEFORE SELECTING THE INTERRUPT FUNCTION.
;;; THIS IS PASSED AS THE SECOND ARGUMENT.
;;; 2.8 IF 1, SPECIFIES AN INTERRUPT RELATED TO A FILE
;;; ARRAY OR SIMILAR OBJECT, E.G. THE **MORE**
;;; INTERRUPT FOR TTY OUTPUT.
;;; ARGUMENT IS THE FILE ARRAY.
;;; 2.7-1.1 IS THE INDEX OF THE INTERRUPT FUNCTION
;;; WITHIN THE ARRAY, WHERE THE LOW BIT SPECIFIES
;;; LEFT OR RIGHT HALF AS USUAL.
;;; 2.7 IF 1, SPECIFIES A MACHINE ERROR.
;;; THE ARGUMENT IS THE LOCATION OF THE LOSS.
;;; BITS 1.9-1.1 SPECIFY THE NATURE OF THE ERROR.
UIMPAR==:0 ;ODDP ;PARITY ERROR
UIMILO==:1 ;EVAL ;ILLEGAL OPERATION
UIMWRO==:2 ;DEPOSIT ;WRITE INTO READ-ONLY MEMORY
UIMMPV==:3 ;EXAMINE ;MEMORY PROTECT VIOLATION
;;; IF 2.9-2.7 ARE ZERO, THEN:
;;; 2.2-2.1 TYPE OF INTERRUPT
;;; 1.9-1.1 SPECIFIC INTERRUPT
;;; CURRENT TYPES AND SPECIFIC INTERRUPTS ARE:
;;; 0 RANDOM ASYNCHRONOUS (DELAYED BY (NOINTERRUPT T))
;;; 0 ALARMCLOCK
UIFCLI==:1 ;CLI-MESSAGE ;USELESS
UIFMAR==:2 ;MAR-BREAK ;USELESS
UIFTTR==:3 ;TTY-RETURN ;USELESS
UIFSYS==:4 ;SYS-DEATH ;USELESS
UIFSMI==:5 ;SAIL-MAIL-INT ;USELESS
IFE USELESS, NUINT0==:1 .SEE GCP6Q6
IFN USELESS,[
SA% NUINT0==:5 .SEE GCP6Q6
SA$ NUINT0==:6 ;ALLOW FOR SAIL-MAIL INTERRUPT
] ;END OF IFN USELESS
;;; 1 RANDOM SYNCHRONOUS
;;; 0 AUTOLOAD
;;; 1 ERRSET FN
;;; 2 *RSET-TRAP
;;; 3 GC-DAEMON
;;; 4 GC-OVERFLOW
;;; 5 PDL-OVERFLOW
NUINT1==:6 .SEE GCP6Q6
;;; 2 ERINT (SYNCHRONOUS)
;;; 0 UNDF-FNCTN
;;; 1 UNBND-VRBL
;;; 2 WRNG-TYPE-ARG
;;; 3 UNSEEN-GO-TAG
;;; 4 WRNG-NO-ARGS
;;; 5 GC-LOSSAGE
;;; 6 FAIL-ACT
;;; 7 IO-LOSSAGE
NUINT2==:10 .SEE GCP6Q6
;;; WE NORMALLY DON'T PUSHJ HERE AT ALL FROM PI LEVEL!
;; (THINK ABOUT HOW TO SIMPLIFY THE CODE HERE.)
UINT: PUSHJ P,UINTPU
SKIPN NOQUIT
SKIPE INHIBIT
JRST UINT2
SKIPGE INTFLG
JRST UINT3
PUSHJ P,UINT0
.SEE UINTPU ;PEOPLE COME HERE TO UNDO UINTPU
;NOTE: THE PUSH'S OF UINTPU MUST SYNC WITH THE POP'S HERE
UINTEX:
IFN <D10+D20>,[
POP FXP,OIMASK
POP FXP,IMASK
] ;END IFN <D10+D20>
SKIPL (FXP)
JRST UINTX1
PIONAGAIN
IT$ .SUSET [.SDF1,,R70]
IT$ .SUSET [.SDF2,,R70]
UINTX1: SUB FXP,R70+1 ;GET RID OF REENABLE INTERRUPTS FLAG
POP FXP,R .SEE UINTPU
JRST CHECKI ;PDL-OVERFLOW MAY HAVE BEEN STACKED
.SEE PDLOV
UINT2: JSR UISTAK ;DELAY A USER INTERRUPT, SINCE INHIBIT SWITCH IS ON
JRST UINTEX
UINT3: HRRZ D,INTFLG ;CHECK INTERRUPT FLAG TO SEE THAT IS SAYS "QUIT"
CAIE D,-1 ;AND NOT SOME INCONGRUOUS USER PI
JRST CKI2
HHCTB: .VALUE
; LERR EMS11 ;HOW THE HELL CAN THIS BE?
UINTPU: ;PUSH PI STATE, THEN DISABLE
PUSH FXP,R ;SAVE R FOR UISTAK, ETC.
PUSH FXP,T
IFE ITS,[
PUSH FXP,IMASK ;SAVE APRENB MASKS
PUSH FXP,OIMASK
MOVN T,INTALL ;GET PI STATE FROM INTERNAL WORD
EXCH T,-2(FXP)
SKIPGE -2(FXP)
PIPAUSE
] ;END IFE ITS
IFN ITS,[
.SUSET [.RPICLR,,T]
EXCH T,(FXP)
SKIPGE (FXP)
PIPAUSE
] ;END OF IFN ITS
POPJ P,
;;; SAVE THE WORLD FOR A USER INTERRUPT, INVOKE IT, AND RESTORE.
;;;
;;; SAVED QUANTITIES INCLUDE ALL ACCUMULATORS, THE PDL POINTERS
;;; (FOR FRETURN), AND THE SUPER-WRITABLE STUFF (TEMPORARIES IN
;;; LOW CORE USED BY INTERRUPTABLE FUNCTIONS).
;;; MANY GLOBAL SWITCHES ARE BOUND AND RESET.
;;; FOR ASYNCHRONOUS USER INTERRUPTS, THE (NOINTERRUPT T) STATE
;;; MAY BE ENTERED; THE PREVIOUS NOINTERRUPT STATE IS SAVED.
;;; MUST NOT COME HERE WITHOUT FIRST USING THE $IWAIT
;;; ROUTINE TO DECIDE WHETHER OR NOT WE ARE IN GC.
;;; ALSO MUST CHECK THE NOINTERRUPT SWITCH BEFORE COMING HERE
;;; IF THAT IS RELEVANT TO THE PARTICULAR USER INTERRUPT.
;;; INTERRUPTS MUST BE TURNED OFF WITH PIOF BEFORE COMING HERE.
;;; THE WORD DESCRIBING THE USER INTERRUPT MUST BE IN D.
YESINT: SKIPN NOQUIT
SKIPE INHIBIT
JRST YESIN1
UINT0:
IT$ .SUSET [.SDF1,,TTYDF1] ;MUST ALLOW PDL OVERFLOW AND MEMORY
IT$ .SUSET [.SDF2,,TTYDF2] ; ERRORS TO GO THROUGH, BUT NO OTHERS
IT$ PION
IFN D10+D20,[
SETZM INTALL ;UNDO THE 'DALINT'
PUSHJ P,DISINT ;DISABLE APPROPRIATE INTERRUPTS
] ;END IFN D10+D20
HRRZS (P) ;WILL HRROS IF ASYNCHRONOUS
PUSHJ P,SAVX5 ;SAVE NUMERIC ACS
PUSH FXP,UNREAL
PUSH FXP,SPSV
BG$ PUSH FXP,BNV1
MOVSI R,-LSWS
PUSH FXP,SWS(R)
AOBJN R,.-1
PUSHJ FXP,SAV5
MOVEM SP,SPSV ;START BINDING VARIABLES
MOVEI AR1,NIL
MOVEI A,LISAR
PUSHJ P,BIND4
HRRZ AR2A,V%IBVL ;GET THE +INTERNAL-INTERRUPT-BOUND-VARIABLES
MOVNI C,512. ;DON'T TRY TO BIND TOO MANY THINGS
UINT0A: SKOTT AR2A,LS
JRST UINT0B
HLRZ A,(AR2A) ;BIND ALL USER-SPECIFIED VARS TO ()
PUSHJ P,BIND
HRRZ AR2A,(AR2A)
AOJL C,UINT0A
UINT0B: JSP T,SPECX
PUSHJ FXP,RST5
SETZM PA4 ;PA4 MUST BE IN THE "SWS" AREA
IFN USELESS, SETZM TYOSW
SETZM INHIBIT
SETZM EOFRTN ;DO NOT SETZM CATRTN! GJS WANTS
SETZM BFPRDP ; TO THROW OUT OF USER INTERRUPTS
SETOM ERRSW
MOVE T,[-LINTPDL,,INTPDL] ;MUSTN'T CALL UINT0 FROM
CAME T,INTPDL ; WITHIN A PI SERVER
.LOSE
REPEAT 3, PUSH FXP,R70 ;RANDOM SLOTS FOR NUMERIC ARGS;
; ; ALSO 4.9 OF TOP ONE => RETURN VALUE MATTERS
UIXPUSH==:6+1+BIGNUM+LSWS+3 ;AMOUNT OF STUFF PUSHED ON FXP
UISWS==:-<LSWS+3>+1 ;WHERE SWS STARTS WHEN SAVED ON FXP
UISAVT==:UISWS-7-BIGNUM ;WHERE ACCUMULATOR T GETS SAVED
PUSH P,[$UIFRAME] ;FRAME MARKER AND PDLS SAVED
PUSH P,FXP ; SO THAT THROW AND FRETURN WIN
HRLM FLP,(P) .SEE UIBRK
PUSHJ FXP,SAV5 ;SAVE ARGUMENT ACS AND 40 ON
PUSH P,40 ; REGPDL FOR GC PROTECTION
PUSH P,PA3
UIFRM==-3-NACS ;LOCATION OF FRAME ON REGPDL
UISAVA==UIFRM+2 ;LOCATION OF AC A ON REGPDL
MOVEI A,UIFRM(P)
MOVEM A,UIRTN
MOVSI AR2A,(CALLF 1,)
HLRZ A,D ;GET FIRST ARG FOR INTERRUPT FN
TRZN D,400000 ;DECODE INTERRUPT TYPE
JRST UINT30
HRRZM D,(FXP) ;TTY INPUT INTERRUPT CHAR
MOVEI R,(D)
MOVE TT,TTSAR(A)
JSP D,TTYICH ;FETCH INTERRUPT FN
MOVSI AR2A,(CALLF 2,)
HRRI AR2A,(R)
MOVEI B,(FXP) ;SECOND ARG IS CHARACTER
JRST UINT31
UINT30: TRZN D,200000
JRST UINT32
MOVEI TT,(D) ;RANDOM FILE INTERRRUPT
ROT TT,-1
HRR AR2A,@TTSAR(A) ;FETCH INTERRUPT FUNCTION
SKIPL TT
HLR AR2A,@TTSAR(A)
UINT31: HRROS UIFRM-1(P) ;ASYNCHRONOUS INTERRUPT
JRST UINT40
UINT32: TRZN D,100000
JRST UINT33
HRRZM A,-1(FXP)
MOVEI A,QODDP(D) ;MACHINE ERROR
MOVEI B,(FXP)
MOVEI C,-1(FXP)
MOVEI AR1,-2(FXP)
MOVSI AR2A,(CALLF 4,)
HRR AR2A,VMERR
JRST UINT40
UINT33: LDB TT,[110200,,D] ;BITS 2.2-2.1 ARE CLASS
ANDI D,777 ;1.9-1.1 ARE SUBTYPE
XCT UINT90(TT) ;FETCH INTERRUPT FUNCTION
XCT UINT91(TT) ;SPECIAL HACKS
UINT40: SKIPGE UIFRM-1(P)
SETOM UNREAL
PIONAGAIN ;***** RE-ENABLE INTERRUPTS *****
IT$ .SUSET [.SDF1,,R70]
IT$ .SUSET [.SDF2,,R70]
TRNN AR2A,-1 ;ONLY PROCESS INTERRUPT IF INT FUNCTION NON-NIL
TDZA A,A ;FORCE A RETURNED VALUE OF NIL IF IT MATTERS
XCT AR2A ;APPLY INTERRUPT FUNCTION
HRRZ T,UIFRM+1(P)
CAIE T,(FXP)
PUSHJ P,UINT45
HLRZ T,UIFRM+1(P)
CAIE T,(FLP)
PUSHJ P,UINT46
PIPAUSE
SKIPGE (FXP) ;IF RETURN VALUE MATTERS
MOVEM A,UISAVA(P) ; SAVE IT FOR RETURN
PUSHJ P,UNBIND ;RESTORE LISAR, ETC.
UINT0X: HRLI R,UISWS(FXP)
HRRI R,SWS
BLT R,SWS+LSWS-1 ;RESTORE SUPER-WRITABLE STUFF
SUB FXP,[-UISWS+1,,-UISWS+1]
BG$ POP FXP,BNV1
POP P,PA3
POP P,40
PUSHJ FXP,RST5M1
POP P,-2(P) ;KNOCK OFF PDLS AND UIFRAME, SAVING
SUB P,R70+1 ; SAVED CONTENTS OF A FOR POPAJ BELOW
POP FXP,SPSV ;Restore state of SPECBINDing
POP FXP,D ;OLD STATE OF UNREAL
SKIPL -1(P) ;IF INTERRUPT WASN'T ASYNCHRONOUS,
JRST UINT88 ; MUSTN'T ATTEMPT TO RESTORE UNREAL
EXCH D,UNREAL ;WELL, WE WANT TO RESTORE IT. WAS IT ON
JUMPE D,UINT88 ; JUST NOW? IF NOT, RETURN.
SKIPE A,UNREAL ;DID WE JUST TURN IT OFF BY RESTORING IT?
JRST UINT0Z ;NO, IT'S STILL ON - RETURN.
UINT0N: HRRZ T,-1(P) ;IS THE CHECKU ROUTINE ITSELF CALLING ME?
CAIGE T,ENOINT ; DON'T WANT TO GET STUCK IN INFINITELY
CAIGE T,NOINTERRUPT ; RECURSIVE CALLS
PUSHJ P,CHECKQ ;HACKISH ENTRY INTO CHECKU
JRST UINT88
UINT0Z: SKIPLE UNREAL
JUMPLE D,UINT0N
UINT88: PUSHJ P,RSTX5
PIONAGAIN ;RE-ENABLE INTERRUPTS
JRST POPAJ
EUINT0:: .SEE PDLOV ;END OF UINT0
UINT45: SKIPA B,[QFIXNUM]
UINT46: MOVEI B,QFLONUM
EXCH A,B
PUSHJ P,UINT49
EXCH A,B
POPJ P,
UINT49: FAC [PDL OUT OF PHASE IN USER INTERRUPT (SYSTEM ERROR)!]
UINT90: HRR AR2A,VALARMCLOCK(D) ;ALARMCLOCK SERIES
HRR AR2A,VAUTFN(D) ;RANDOM SYNCHRONOUS
HRR AR2A,VUDF(D) ;ERINT SERIES
.VALUE ;??
UINT91: HRROS UIFRM-1(P) ;ALARMCLOCK (ASYNCHRONOUS)
JFCL ;RANDOM SYNCHRONOUS
SETOM (FXP) ;ERINT (VALUE MATTERS)
.VALUE ;??
CKI0: PUSH FXP,D
HRRZ D,INTFLG
CAIN D,-1
JRST CKI1 ;DELAYED USER INTERRUPT
PIPAUSE
CKI2: SETZM UNREAR
CKI2A: SETZM UNRC.G ;CHECKU JOINS IN AT THIS POINT
SETZM INTFLG ; RESET TTY NO RESET
TRNE D,4 ;^X -6 -2
JRST CKI3 ;^G -7 -3
IFN ITS+D20,[
PUSH FXP,D
MOVEI F,LCHNTB-1 ;RESET ALL TTY FILES
CKI2F: SKIPN AR1,CHNTB(F)
JRST CKI2F1
MOVE TT,TTSAR(AR1)
TLNN TT,TTS.CL ;DON'T RESET THE FILE IF IT IS CLOSED
TLNN TT,TTS.TY
JRST CKI2F1
MOVEI T,CLRI3
TLNE TT,TTS.IO
MOVEI T,CLRO3
PUSHJ FXP,(T)
CKI2F1: SOJG F,CKI2F
POP FXP,D
] ;END OF IFN ITS+D20
10$ CLRBFO
10$ CLRBFI
CKI3:
CKI3B: TRNN D,2
SKIPE PSYMF
RQITR: LERR [SIXBIT \QUIT!\] ;SO ERROR OUT FOR ^X
IFN USELESS*ITS,[
MOVE T,IMASK
TRNN T,%PIMAR
JRST CKI4A
.SUSET [.RMARA,,SAVMAR]
.SUSET [.SMARA,,R70] ;AVOID TRIPPING THE MAR DURING THE ERRPOP
CKI4A:
] ;END OF IFN USELESS*ITS
PIONAGAIN
PUSHJ FXP,ERRPOP
PIPAUSE
IFN USELESS*ITS,[
TRNE T,%PIMAR ;ERRPOP PRESERVES T
.SUSET [.SMARA,,SAVMAR]
] ;END OF IFN USELESS*ITS
MOVE A,VERRLIST
MOVEM A,VIQUOTIENT
JSP A,ERINI0
MOVE P,C2 ;DRASTIC ACTION FOR ^G
SETZM TTYOFF
STRT 17,@RQITR
JRST LSPRT1 ;WILL PION WITHIN ERINIT
CKI1: SKIPE INHIBIT ;RETURN TO SERVICE THE DELAYED INTERRUPT
JRST POPXDJ ;BUT NO SERVICE WHEN INHIBIT = -1
PUSHJ P,UINTPU
SETZM INTFLG
PUSH P,A
PUSH P,A
HLLOS INHIBIT
SKIPG A,INTAR
LERR EMS13 ;LOST USER INTERRUPT
CKI1A: MOVS D,INTAR(A) ;FOR GC PROTECTION
MOVSM D,(P)
SOSG INTAR ;CYCLE THROUGH THE DELAYED INTERRUPTS
SETZM INTFLG ;TO PREVENT TIMING SCREWS, CLEAR INTFLG IF
; NO MORE INTERRUPTS PENDING
PUSHJ P,UINT0
SKIPLE A,INTAR
JRST CKI1A
SUB P,R70+1
POP P,A
SETZM INHIBIT
PUSHJ P,UINTEX
JRST POPXDJ
SUBTTL UUOH HANDLER (INCLUDING STRT)
;UUOH: 0 ;UUO HANDLER
UUOH0: MOVEM T,UUTSV
LDB T,[331100,,40]
CAIL T,CALL_-33
JRST UUOH0B ;PROBABLY A LISP "CALL" UUO
UUOH2: CAILE T,UUOMAX
SETZ T,
JRST @UUOH2A(T)
UUOH2A: ERRBAD ;0 IS ILGL, ILGL, ILGL
ERROR1 ;LERR ;UNCORRECTABLE LISP ERROR
UUOACL ;ACALL ;KLUDGE FOR NCALLING ARRAYS
UUOAJC ;AJCALL ;JRST VERSION OF ACALL
ERROR1 ;LER3 ;LERR, BUT ALSO PRINT ACCUMULATOR A
ERROR5 ;ERINT ;CORRECTABLE ERROR WITH SIXBIT MSG
POF1 ;PP Z$X ;PRINT OUT Z FROM DDT
STRTOUT ;STRT ;SIXBIT STRING TYPE OUT
ERROR5 ;SERINT ;CORRECTABLE ERROR WITH S-EXP MSG
TOF1 ;TP Z$X ;TYPEP PRINTOUT OF Z FROM DDT
ERRIOJ ;IOJRST ;HAIRY FROB TO GET I/O ERROR MSGS
STRTOUT ;STRT7 ;ASCII STRING TYPE OUT
IFN .-UUOH2A-1-UUOMAX, WARN [UUOH2A OUT OF PHASE]
UUOACL: PUSH P,UUOH
BAKPRO
UUOAJC: MOVE T,@40 .SEE ASAR
TLNE T,AS<FX+FL>
AOJA T,.+2 ;FOR NUMBER ARRAYS, ENTER AT HEADER+1
PUSH P,[UUONVL] ;FOR OTHER ARRAYS, USE NUMVAL CHECK ROUTINE
XCTPRO
EXCH T,UUTSV
SPECPRO INTACT
JRST @UUTSV
NOPRO
;;; DISPATCH ON "CALL" TYPE UUO, TRAPPING TO INTERPRETER IF NECESSARY
UUOH0B: CAILE T,NJCALF_-33
JRST UUOH2
MOVEM TT,UUTTSV
MOVEM R,UURSV
LDB TT,[270400,,40]
CAIG TT,15 ;LISP "CALL" TYPE UUOS
TDZA R,R
MOVEI R,-15(TT)
HRRZ T,40
UUOH0A: MOVEM T,UUOFN
TLZ T,-1
MOVEI TT,(T)
LSH TT,-SEGLOG
SKIPGE TT,ST(TT)
JRST @UUNAF(R)
TLNN TT,SY
JRST UUOH0C
TLZ R,700000 ;400000 => AUTOLOAD, 200000 => MACRO,
; 100000 => ALREADY DID AUTOLOAD
;;; FALLS THRU
;;; FALLS THRU
UUOH1: HRRZ T,(T)
JUMPE T,UUOH1A
HLRZ TT,(T)
HRRZ T,(T)
CAIL TT,QARRAY
CAILE TT,QAUTOLOAD
JRST UUOH1
2DIF JRST @(TT),UUOTRT,QARRAY
UUOH0C: TLNN TT,SA
JRST UUOH3A
HRRZ TT,ASAR(T) ;HANDLE CASE OF A SAR EFFICIENTLY
CAIN TT,ADEAD
JRST UUOH3A
MOVSI T,(T)
HRRI T,T
JRST @UUAT(R)
UUOH1A: JUMPL R,UUALT1
TLNE R,200000
JRST UUOMER
PUSH P,A
PUSH P,B
SKIPGE A,UUOFN
JRST UUOUER
HLRZ T,(A) ;OPENCODED SYMEVAL
HRRO T,@(T)
UUOH3B: POP P,B
POP P,A
SKIPN EVPUNT ;SHOULD WE ALLOW FUNCTIONAL VARIABLES?
CAIN T,QUNBOUND ;YES, IS IT BOUND?
JRST UUOH3A ;NO TO EITHER QUESTION, SO ERROR
JRST UUOH0A
;;UUO TRANSFER TABLE, ONCE FUNCTION TYPE IS KNOWN
UUOTRT:
IRPS LL,X,[A+S+FS+L+E+FE+MC-AL-]
IFSE X,+, @UU!LL!T(R)
IFSE X,-, UU!LL!T
TERMIN
;;; MOBY DISPATCH TABLE FOR DECODING UUO CALL TYPES!
;;; R=0 => COMPILED ROUTINE CALLING A SUBR TYPE
;;; R=1 => COMPILED ROUTINE CALLING A LSUBR TYPE
;;; R=2 => COMPILED ROUTINE CALLING A FSUBR TYPE
UUAT: UUOARR ;CALLING SUBR - IT'S AN ARRAY **WIN**
UUOS1A ;CALLING LSUBR - IT'S AN ARRAY
UUOS2A ;CALLING FSUBR - IT'S AN ARRAY
UUST: UUOS0 ;CALLING SUBR - IT'S A SUBR **WIN**
UUOS1 ;CALLING LSUBR - IT'S A SUBR
UUOS2 ;CALLING FSUBR - IT'S A SUBR
UUFST: UUOS10 ;CALLING SUBR - IT'S AN FSUBR
UUOS11 ;CALLING LSUBR - IT'S AN FSUBR
UUOSBR ;CALLING FSUBR - IT'S AN FSUBR **WIN**
UULT: UUOS7 ;CALLING SUBR - IT'S AN LSUBR
UUOLSB ;CALLING LSUBR - IT'S AN LSUBR **WIN**
UUOS9 ;CALLING FSUBR - IT'S AN LSUBR
UUET: UUOEXP ;CALLING SUBR - IT'S AN EXPR
UUOS5 ;CALLING LSUBR - IT'S AN EXPR
UUOS6 ;CALLING FSUBR - IT'S AN EXPR
UUFET: UUOS3 ;CALLING SUBR - IT'S A FEXPR
UUOS4 ;CALLING LSUBR - IT'S A FEXPR
UUOEX2 ;CALLING FSUBR - IT'S A FEXPR
UUNAF: UUOS ;CALLING SUBR - IT'S A NONATOMICFUN
UUL2N ;CALLING LSUBR - IT'S A NONATOMICFUN
UUF2N ;CALLING FSUBR - IT'S A NONATOMICFUN
UUALT: HRRZM T,UUALT9 ;FOUND AN AUTOLOAD PROPERTY
TLOA R,400000
UUMCT: TLO R,200000 ;MACROS ARE IGNORED, SORT OF
JRST UUOH1
UUALT1: TLOE R,100000 ;CALLING ANYTHING - IT'S AN AUTOLOAD
JRST UUOH3C ;LOSE IF JUST DID AN AUTOLOAD ALREADY
PUSH P,A
HLRZ A,@UUALT9 ;OTHERWISE AUTOLOAD THE FUNCTION
MOVE T,UUOFN
PUSHJ P,AUTOLOAD ;BETTER SAVE R, BY GEORGE!
POP P,A
MOVE T,UUOFN
JRST UUOH1 ;NOW TRY IT AGAIN
;;; MAY CALL UUOBNC AND UUOBAK ONLY WHEN *RSET IS KNOWN
;;; TO BE NON-NIL - AVOIDS CERTAIN TIMING ERRORS.
UUOBNC: POP P,UUOBKG ;UUOBKG WITH NO CPOPJ
HRROS UUOBKG ;FOR UUO GUYS THAT CALL IAPPLY,
JRST UUOBK0 ; WHICH ITSELF SETS UP A CPOPJ
UUOBAK: POP P,UUOBKG ;WATCH THIS CROCK!
JRST UUOBK7
;;;UUOBKG: 0
UUBKG1: SKIPN V.RSET ;CHECK TO SEE WHETHER IN *RSET MODE
JRST @UUOBKG ;SAVES ALL ACS; T HAS -<# OF ARGS>
UUOBK7: HRRZS UUOBKG
UUOBK0: SKIPE NIL
PUSHJ P,NILBAD
PUSH FXP,TT ;PDLS MUST BE AS FRETURN WOULD WANT
PUSH FXP,R ; TO RESTORE THEM TO
JUMPGE T,UUOBK1 ;IF T>0, THEN ASSUME 0, AND THE
JSP TT,ARGP0 ; ARGS WILL BE FILLED IN LATER
MOVNI TT,(T)
SKIPGE A
SETZ TT,
HRLM TT,(P)
JRST UUOBK8
UUOBK1: PUSH P,R70
UUOBK8: MOVEI TT,-2(FXP)
HRLI TT,(FLP)
PUSH P,TT
HRRZ TT,40
HRLI TT,(SP)
PUSH P,TT
JUMPLE T,UUOBK5
PUSH P,R70
JRST UUOBK6
UUOBK5: PUSH P,[$APPLYFRAME]
UUOBK6: MOVS R,40
HRRI R,CPOPJ
SKIPL UUOBKG ;MAYBE DON'T WANT THE CPOPJ
PUSH P,R
HRRZS UUOBKG
POP FXP,R
POP FXP,TT
JRST @UUOBKG
UUOSBR: HLRZ T,(T) ;*** FSUBR CALLED LIKE FSUBR
MOVEM P,UUPSV
MOVNI R,1
TLOA A,400000
UUOSB2: MOVEI R,1 ;R>0 SAYS DON'T DO FRAME HACKERY
UUOSB3: MOVE TT,40 ;OTHERWISE R HAS -<# OF ARGS>
UUOSB5: TLO T,(PUSHJ P,)
TLNE TT,(1_33) ;THE NO-PUSH, OR JRST, BIT. SEE DEFINITION OF JCALL
TLCA T,(JRST#<PUSHJ P,>)
PUSH P,UUOH
UUOSB6: JUMPG R,UUOSB7
EXCH T,R
JSR UUOBKG
EXCH T,R
UUOSB7: TLZ A,-1
TLNE TT,(20_33) ;THE NUMERIC CALL BIT. SEE DEFINITION OF NCALL
AOS T ;FOR NCALL, ENTER AT ENTRY+1
SKIPN VNOUUO
TLNE TT,(2_33) ;THE NO-CLOBBER BIT. SEE DEFINITION OF CALLF
JRST UUOXT0
SOS TT,UUOH
UUOSB4: LDB R,[331100,,(TT)]
CAIN R,XCT_-33
JRST UUOXCT ;MAKE XCT OF UUO WORK
MOVEM T,(TT)
UUOXT0: TLNN T,(34_33) ;CAUSE EXIT TO INDIRECT THRU ACALL
TLO T,(@)
UUOXIT: EXCH T,UUTSV
UUOXT1: MOVE TT,UUTTSV
MOVE R,UURSV
JRST @UUTSV
UUOXCT: LDB R,[220400,,(TT)] ;GET INDEX FIELD OF XCT
JUMPE R,.+2
HRRZ R,@UUOACS-1(R) ;IF NON-ZERO, GET CONTENTS OF THAT AC
ADD R,(TT) ;ADD IN ADDRESS FIELD
HLL R,(TT)
MOVEI TT,(R)
TLNE R,(@)
JRST UUOXCT ;MAKE INDIRECTION WIN
JRST UUOSB4 ;MAKE XCT OF XCT ... OF XCT OF UUO WIN
;;; TABLE OF WHERE TO FIND THE ACS AS THEY WERE ON UUO ENTRY
UUOACS:
IRPS X,,[A B C AR1 AR2A UUTSV UUTTSV D UURSV F FREEAC UUPSV FLP FXP SP]
X
TERMIN
UUOARR: HLRZ R,(T) ;*** ARRAY CALLED LIKE SUBR
MOVSI TT,(@)
JRST UUOS03
UUOS0: SETZ TT, ;*** SUBR CALLED LIKE SUBR
HRRZ R,UUOFN
UUOS03: MOVEM P,UUPSV ;THIS IS TO HELP UUOXCT
HLR TT,(T)
PUSH P,TT
LDB T,[270400,,40]
MOVNS T
PUSH FXP,T
PUSHJ P,ARGCHK ;SKIPS IF OK
JRST UUOS0E
POP FXP,R ;R NOW HAS -<# OF ARGS>
POP P,T
TLNN T,(@) ;FURTHER WORK NEEDED FOR CALLING AN ARRAY
JRST UUOSB3
MOVSI TT,TTS<CN>
HLL A,40 ;UUOSB7 WILL CLEAR LEFT HALF OF A
TLNN A,2000 ;DO NOT SET THE COMPILED-CODE-
IORM TT,TTSAR(T) ; NEEDS-ME BIT FOR A CALLF!
MOVE TT,40
TLZN TT,(20_33)
JRST UUOSB3
TLNN TT,(2_33)
JRST UUOAR2 ;NCALL'ING AN ARRAY MEANS CLOBBER,
PUSH P,[UUONVL] ; IF ANY, SHOULD BE TO ACALL
JRST UUOSB5
UUOAR2: TLNN TT,1000
TLOA T,(ACALL) ;NCALL, BUT NOT NCALLF => ACALL
TLOA T,(AJCALL) ;NJCALL, BUT NOT NJCALF => AJCALL
PUSH P,UUOH
TLZ TT,777000
TLZ T,(@)
JRST UUOSB6
UUONVL: SKOTT A,FX+FL
JRST UUONVE
FIX7: MOVE TT,(A) ;OF COURSE, THE ROUTINE HAD BETTER COME UP
POPJ P, ;WITH SOME LISP NUMBER AS VALUE
UUOS1E: PUSH FXP,D
MOVEI D,1
JRST UUOE3
UUOS2E: MOVEM D,(FXP) ;TAKE THE SPOT ALREADY PUSHED ON FXP
MOVEI D,3
UUOE3: PUSHJ P,SAVX3 ;ARGS WERE ALREADY ON PDL, HENCE MUST BE POPPED OFF
MOVEM B,QF1SB ;SO WE MIGHT AS WELL LIST THEM UP WHILE WE'RE AT IT
PUSH FXP,T
PUSHJ FXP,LISTX
POP FXP,T
MOVE B,QF1SB
JRST UUOE2
UUOS0E: SUB P,R70+1
UUOS0F: PUSH FXP,D
PUSHJ P,SAVX3
MOVEI D,0
UUOE2: TLNE D,2 ;D 1.2 => EXIT ADDRESS ALREADY BEEN HACKED
JRST .+4
MOVE R,40
TLNN R,1000
PUSH P,UUOH
PUSHJ FXP,SAV5M1
PUSHJ P,[MOVE TT,40
HRLS TT
PUSH P,TT ;NAME OF FUNCTION IN LH
TRNN D,1 ;1.1 => LISTING HAS ALREADY BEEN DONE
JSP TT,ARGP0 ;ARGS TO FUNCTION NOW ON PDL
MOVEM D,-1(FXP)
PUSHJ P,RSTX3 ;RECUPERATE - IF POSSIBLE, DO NEW EVALUATION
JRST WNAERR ;OR ELSE CRAP OUT ON WRONG NUMBER ARGS
]
UUOSE1: PUSHJ FXP,RST5M1
POP FXP,D
POPJ P,
UUOS1: HRRZ TT,(T) ;*** SUBR CALLED LIKE LSUBR
HLRZ T,(T)
EXCH T,UUTSV
JSP R,PDLARG
HRRZ R,UUOFN
PUSHJ P,ARGCK0 ;FORCE CHECKING OF NUMBER OF ARGS
JRST UUOS0F
MOVE TT,40
TLNE TT,(20_33) ;THE NCALL BIT
AOS UUTSV
TLNN TT,(1_33) ;THE NO-PUSH, OR JRST, BIT. SEE DEFINITION OF JCALL
PUSH P,UUOH
JSR UUOBKG
JRST UUOXT1
UUOX4B: SKIPN UUOH ;=0 MEANS ENTRY FROM MAP SERIES
JRST (R)
PUSHJ FXP,SAV5M1
PUSH P,CR5M1PJ
JRST (R)
UUOLSB: MOVEM P,UUPSV ;*** LSUBR CALLED LIKE LSUBR
MOVEI A,NIL
HLRZ T,(T)
SKIPN V.RSET
JRST UUOSB2
PUSH FXP,T ;SAVE T (ADDRESS OF LSUBR)
MOVE T,UUTSV
PUSH FXP,T ;SAVE -<# OF ARGS> FOR UUOFUL
HRRZ R,UUOFN ;FOR ARGCK0
PUSHJ P,ARGCK0
JRST UUOS1E
MOVE R,T ;WATCH THIS SHUFFLING OF R, T, AND UUTSV!
JSP T,NPUSH-6 ;SIX SLOTS FOR "APPLY FRAME", ETC.
MOVE T,UUTSV
MOVEM R,UUTSV
MOVEI T,(P)
UUOLB3: AOJG R,UUOLB4 ;SO SLIDE STUFF SIX SLOTS UP THE PDL
MOVE TT,-6(T) ;AT END, T POINTS TO LAST OF THE FIVE
MOVEM TT,(T) ; FRAME SLOTS FOR UUOFUL
SOJA T,UUOLB3
UUOLB4: MOVE TT,40 ;FIGURE OUT IF CALL OR CALLF TYPE
MOVEI R,CPOPJ ; (MAY BE CALL TYPE IF 0 ARGS)
TLO R,(PUSHJ P,) ;FIGURE IT OUT
TLNE TT,1000 ;IT MAY LOOK LIKE WE'RE CONSTRUCTING A PUSHJ
TLCA R,(JRST#<PUSHJ P,>) ; TO THE WRONG PLACE, BUT READ THIS CAREFULLY!
HRR R,UUOH ;RETURN ADDRESS MUST GO UNDER
HRRZM R,-5(T) ; THE FRAME, NOT OVER!!!
HLLM R,-1(FXP) ;SAVE INSTRUCTION TO CLOBBER WITH
MOVEI TT,(T)
PUSHJ P,UUOFUL ;SO STICK AN APPLY FRAME UNDER ARGS, IF ANY
;REMEMBER, UUOFUL EXPECTS TWO FROBS
; ON FXP, AND POPS ONE OF THEM
POP FXP,T ;RESTORE T (ADDRESS OF LSUBR)
MOVE TT,40
JRST UUOSB7
UUOFUL: MOVS R,40 ;PUT FRAME UNDER LSUBR CALL
HRRI R,CPOPJ ;TT POINTS TO LAST OF 5 PDL SLOTS
MOVEM R,(TT) ;USES T,TT,R
MOVEI R,-2(FXP) ;FXP HAS -<# OF ARGS> AND ONE
HRRM R,-3(TT) ; OTHER SLOT AS WELL
HRLM FLP,-3(TT)
HRLM SP,-2(TT)
HRRZ R,40
HRRM R,-2(TT)
POP FXP,T
MOVEI R,(T)
HRLI R,-1(T)
ADDI R,(P)
SKIPN T
SETZ R,
MOVEM R,-4(TT)
MOVE R,[$APPLYFRAME]
MOVEM R,-1(TT)
POPJ P,
UUOS9: SKIPA TT,CILIST ;*** LSUBR CALLED LIKE FSUBR
UUOS7: MOVEI TT,ARGPDL ;*** LSUBR CALLED LIKE SUBR
MOVE R,40
TLNN R,1000
PUSH P,UUOH
HLRZ T,(T)
TLNE R,(20_33) ;THE NCALL BIT
ADDI T,1
PUSH FXP,T
PUSH FXP,XC-1
SKIPN V.RSET
JRST UUOS7A
MOVEI T,1
PUSHJ P,UUOBAK
REPEAT 2, SOS -3(P) ;ALLOW FOR TWO FROBS ON FXP
HRRZM P,(FXP)
UUOS7A: JSP TT,(TT) ;ARGPDL OR ILIST
POP FXP,R
JUMPL R,UUOS7K
SKIPN TT,T
JRST UUOS7H
HRLI TT,-1(TT)
ADDI TT,1(P)
UUOS7H: MOVEM TT,-4(R)
MOVE TT,[$APPLYFRAME]
MOVEM TT,-1(R) ;APPLYFRAME DONE
UUOS7K: MOVEM T,UUTSV
HRRZ R,UUOFN
PUSHJ P,ARGLCK
JRST UUOS2E
POP FXP,T
MOVEI A,0
JRST UUOXIT
UUOS2A: HLRZ TT,(T) ;*** ARRAY CALLED LIKE FSUBR
MOVEM TT,LISAR
MOVEI R,(TT)
MOVEI TT,IAPAR1
JRST UUOS2Q
UUOS2: HLRZ TT,(T) ;*** SUBR CALLED LIKE FSUBR
HRRZ R,UUOFN
UUOS2Q: MOVE T,40
TLNN T,1000
PUSH P,UUOH
TLNE T,(NCALL)
PUSH P,[UUONVL]
CAIN T,IAPAR1
PUSH P,LISAR
PUSH FXP,TT ;SUBR ADDR
CILIST: JSP TT,ILIST ;ILIST FORTUNATELY SAVES R
PUSHJ P,ARGCHK
JRST UUOS2E
JSP R,PDLARG
POP FXP,TT ;PRESERVE T FOR UUOBKG
CAIN TT,IAPAR1
POP P,LISAR
JSR UUOBKG
MOVEI T,(TT) ;BEWARE! LOOSE SUBR POINTER
JRST UUOXIT
UUOS1A: HLRZ TT,(T) ;*** ARRAY CALLED LIKE LSUBR
MOVEM TT,LISAR
MOVEI T,IAPAR1 ;HAIR SO INTERRUPTS WON'T SCREW US
EXCH T,UUTSV
JSP R,PDLARG ;SAVES TT
JSR UUOBKG ;ALSO SAVES TT, AND WANTS NOTHING ON PDLS
LDB R,[TTSDIM,,TTSAR(TT)]
MOVE TT,40
TLNN TT,1000
PUSH P,UUOH
TLNE TT,(NCALL)
PUSH P,[UUONVL]
MOVNI TT,(R) ;WNAERR will look at TT if error
CAMN TT,T
JRST UUOXT1
AOS R ;Fake an ARGS property from # of dims
PUSH FXP,D
PUSHJ P,SAVX3
JRST UUOE2
;;; PUTCODE [EXPR _ FSUBR]40
UUOS4: POP P,A ;*** FEXPR CALLED LIKE LSUBR
MOVN TT,UUTSV
JRST UUOS4A
UUF2N: SKIPA TT,40 ;*** NONATOMICFUN CALLED LIKE FSUBR
UUOS6: HLRZ TT,(T) ;*** EXPR CALLED LIKE FSUBR
MOVE R,40
TLZN TT,-1 ;UUF2N LEAVES LH OF T ^= 0
HRL TT,R ;OTHERWISE GET SUBR EXPR NAME IN LH
TLNN R,1000
PUSH P,UUOH
TLNE R,(20_33) ;THE NCALL BIT
PUSH P,[UUONVL]
JSP R,UUOX4B
SKIPN V.RSET
JRST UUOS6Q
PUSH P,FXP ;IF IN *RSET MODE, MAKE
HRLM FLP,(P) ; UP AN EVAL FRAME (SEE EVAL
MOVEI C,(A) ; FOR FORMAT THEREOF)
HRRZ B,40
PUSHJ P,XCONS ;MUST CONS UP FAKE ARG TO EVAL
PUSH P,A
HRLM SP,(P)
PUSH P,[$EVALFRAME]
MOVEI A,(C)
UUOS6Q: PUSH P,TT ;PUSH OF FUNCTION
MOVEI TT,IAPPLY
JRST ILIST
UUOS11: MOVEM T,UUOFN ;*** FSUBR CALLED LIKE LSUBR
MOVE T,UUTSV
JRST UUS10A
;;; ENDCODE [EXPR _ FSUBR]
UUOS3: LDB TT,[270400,,40] ;*** FEXPR CALLED LIKE SUBR
UUOS4A: SOJN TT,UUOFER
UUOEX2: MOVEI TT,1 ;*** FEXPR CALLED LIKE FSUBR
DPB TT,[270400,,40]
TLOA A,400000
UUOS: SKIPA TT,40 ;*** NONATOMICFUN CALLED LIKE SUBR
UUOEXP: HLRZ TT,(T) ;*** EXPR CALLED LIKE SUBR
LDB T,[270400,,40]
UUOEX4: MOVE R,40 ;ALL OF T,TT,R WILL BE LOST!
TLZN TT,-1 ;INSERT EXPR NAME IF WAS EXPR
HRL TT,R
TLNN R,1000
PUSH P,UUOH
MOVN T,T
SKIPE V.RSET
PUSHJ P,UUOBNC
TLNE R,(NCALL)
PUSH P,[UUONVL]
JSP R,UUOX4B
PUSH P,TT ;PUSH FUNCTION
JUMPE T,IAPPLY
MOVEM T,UUTSV
HRLZ R,UUTSV
MOVE A,1(R)
JSP T,PDLNMK
PUSH P,A ;PUSH ARGUMENT
AOBJN R,.-3
MOVE T,UUTSV
JRST IAPPLY ;APPLY FUN TO ARGS
UUOS10: MOVEM T,UUOFN ;*** FSUBR CALLED LIKE SUBR
JSP TT,ARGPDL
UUS10A: AOJN T,UUOFER
POP P,A
MOVSI T,2000
IORM T,40
MOVE T,UUOFN
JRST UUOSBR
UUL2N: SKIPA TT,40 ;*** NONATOMICFUN CALLED LIKE LSUBR
UUOS5: HLRZ TT,(T) ;*** EXPR CALLED LIKE LSUBR
MOVE T,UUTSV
CAMGE T,XC-NACS
JRST UUOS5A
JSP R,PDLARG
MOVNS T
JRST UUOEX4
UUOS5A: PUSH FXP,T ;DAMN CASE WHERE WE MUST
PUSH FXP,V.RSET ; SLIDE STUFF UP THE PDL,
MOVEI R,(P) ; DOING PDLNMK'S AS WE GO
JSP T,NPUSH-3-NACS+1 ;ROOM FOR ALL ACS BUT A, PLUS 3
SKIPE (FXP)
JSP T,NPUSH-5 ;EXTRA SLOTS FOR *RSET
MOVEI D,(P)
MOVE F,-1(FXP)
UUOS5B: MOVE A,(R) ;SO DO ALL THE PDLNMK'S
JSP T,PDLNMK
MOVEM A,(D)
SUBI R,1
SUBI D,1
AOJL F,UUOS5B
HRL TT,40 ;TT HAS BEEN SAVED - HAS FN
MOVEM TT,(D) ;SAVE FUNCTION BELOW ARGS FOR IAPPLY
SKIPE (FXP) ;D SHOULD POINT TO WHERE ACS ARE SAVED
SUBI D,5 ;FOR *RSET, MUST SAVE THE ACS UNDER THE FRAME!
REPEAT NACS-1, MOVEM B+.RPCNT,.RPCNT-NACS(D) ;SAVE ALL MARKED ACS BUT A
MOVEI TT,R5M1PJ ;PROVIDE FOR RESTORING THEM
MOVEM TT,-1(D) ;ACS WERE SAVED UNDER, NOT OVER, THE
MOVE TT,40 ; FRAME IN CASE OF AN FRETURN
MOVE F,UUOH ;MAYBE NEED RETURN ADDRESS UNDER
TLNE TT,1000 ; THE ARGS (IF NOT, USE A CPOPJ)
MOVEI F,CPOPJ
MOVEM F,-NACS-1(D)
POP FXP,F
JUMPE F,UUOS5C ;MAYBE MORE *RSET HAIR?
PUSH FXP,(FXP) ;DUPLICATE NUMBER OF ARGS ON FXP
MOVEI TT,4(D) ;TT POINTS TO THE FIVE *RSET SLOTS
MOVEM TT,-1(FXP) ;PLOP POINTER INTO PDL SLOT
PUSHJ P,UUOFUL ;SET UP APPLYFRAME (POPS FXP)
POP FXP,TT
HRRZS (TT) ;FLUSH CPOPJ - IAPPLY WILL CREATE ONE
JRST IAPPLY
UUOS5C: POP FXP,T ;NOW FOR THE IAPPLY
JRST IAPPLY ;UUOFUL WANTS TWO THINGS ON FXP, WILL POP ONE
ARGCHK: CAMGE T,XC-NACS ;CHECK NUMBER OF ARGS SUPPLIED
JRST PAERR ;R HAS ATOM PROPERTY LIST POINTER
ARGLCK: SKIPE V.RSET
JRST ARGCK2
ARGCK1: POP P,TT ;FOR SPEED, DO THIS RATHER THAN
JRST 1(TT) ;AOS (P) POPJ P,
ARGCK2: SKOTT R,SY ;R HAS SYMBOL OR SAR
JRST ARGCK5 ;MUST BE A SAR
ARGCK0: HLRZ R,(R)
HLRZ R,1(R)
JUMPE R,ARGCK1
LDB TT,[111100,,R]
JUMPN TT,ARGCK3
ARGCK4: LDB TT,[001100,,R]
MOVNI TT,-1(TT)
CAMN T,TT
AOS (P)
POPJ P,
ARGCK3: MOVNI TT,-1(TT)
CAMLE T,TT
POPJ P,
LDB TT,[001100,,R]
CAIN TT,777 ;777 IS EFFECTIVELY INFINITY
JRST POPJ1
MOVNI TT,-1(TT)
CAML T,TT
AOS (P)
POPJ P,
ARGCK5: LDB R,[TTSDIM,,TTSAR(R)]
AOJA R,ARGCK4
ARGPDL: LDB T,[270400,,40] ;ARGS => PDL -CNT=> T
MOVNS T
ARGP0: HRLZ R,T
ARGP1: JUMPE R,(TT)
PUSH P,A(R)
AOBJN R,.-1
JRST (TT)
PDLARG: CAMGE T,XC-NACS
PAERR: LERR EMS16 ;MORE THAN 5 ARGS
JRST .+1+NACS(T)
REPEAT NACS,[CONC RSTR,\<A-1+NACS-.RPCNT>,: POP P,A-1+NACS-.RPCNT
]
PDLA2: JRST (R)
MOVEI D,QSUBRCALL ;COME HERE IF SUBRCALL (Q.V.) GOT 0 ARGS
SOJA T,WNALOSE
STRTOUT:
SUBI T,STRT_-33 ;FLAG NON-ZERO IF STRT7 CALL
EXCH T,UUTSV
PUSH P,UUOH ;PUSH RETURN ADDR FOR FINAL EXIT
PUSH P,A
PUSHJ P,SAVX5
PUSH FXP,UUTSV
PUSH FXP,40
PUSH P,AR1
PUSH P,AR2A
LDB D,[270400,,(FXP)] ;AC=17 MEANS USE MSGFILES.
CAIN D,17
JRST ERP0D
SKIPN AR1,(D) ;NIL MEANS USE DEFAULT ^R AND ^W
JRST ERP0C
CAIN AR1,QUNBOUND ;GIVEN UNBOUND VARIABLE?
LERR [SIXBIT \UNBOUND VARIABLE IN PRINC FROM COMPILED CODE --GSB!\]
ERP0E: TLO AR1,200000
ERP0F: MOVEI A,(AR1)
LSH A,-SEGLOG
SKIPL ST(A) ;MAYBE SHOULD ERRR-CHECK BETTER?
TLO AR1,400000 ;NOTE WHETHER LIST OR NOT
ERP0A: JSP T,GTRDTB
.5LOCKI
ERBPLOC==-1 ;LOCATION OF BYTE PTR ON FXPDL
ER7PLOC==-2 ;LOCATION OF STRT7-P ON FXPDL
SKIPE ER7PLOC(FXP) ;STRT7-P?
JRST ERP7A
MOVSI D,440600
HLLM D,ERBPLOC(FXP)
ERP1: ILDB TT,ERBPLOC(FXP) ;STRING BYTE POINTER IS STORED ON FXP
CAIN TT,'# ;THE .5LOCKI SAVED INHIBIT ON TOP OF FXP
JRST ERP3
CAIN TT,'!
JRST ERP6
CAIN TT,'^
JRST ERP4
ERP5: ADDI TT,40
ERP5A: PUSHJ P,STRTYO
JRST ERP1
ERP7A: MOVSI D,440700
HLLM D,ERBPLOC(FXP)
ERP7: ILDB TT,ERBPLOC(FXP) ;STRING BYTE POINTER IS STORED ON FXP
JUMPE TT,ERP6
PUSHJ P,STRTYO
JRST ERP7
ERP0D: SKIPN AR1,VMSGFILES
JRST ERP6A
JRST ERP0E
ERP0C: SKIPE AR1,TAPWRT
HRRZ AR1,VOUTFILES
JUMPN AR1,ERP0F
SKIPE TTYOFF
JRST ERP6A
JRST ERP0A
ERP3: ILDB TT,ERBPLOC(FXP) ;QUOTE A CHAR
JRST ERP5
ERP4: ILDB TT,ERBPLOC(FXP) ;CONTROLLIFY A CHAR
ADDI TT,40
TRC TT,100
CAIE TT,^M
JRST ERP5A
PUSHJ P,STRTYO
MOVEI TT,^J
JRST ERP5A
ERP6: UNLOCKI ;DONE!
ERP6A: POP P,AR2A
POP P,AR1
SUB FXP,R70+2 ;FLUSH BYTE PTR AND STRT7P SWITCH
POP P,A ;RESTORE A
JRST RSTX5 ;RESTORE NUMACS AND POPJ
ENDFUN==.-1 .SEE SSYSTEM ;NO MORE FUNCTIONS BEYOND HERE
SUBTTL INITIAL STARTUP CODE
;;; NORMAL G STARTUP CODE. ON FIRST RUN, THE ALLOC PHASE COMES HERE;
;;; THEREAFTER, LISPGO COMES HERE DIRECTLY.
;;; WE DO NOT HAVE THE USE OF THE PDLS UNTIL THE CALL TO ERINIX.
;;; WE DO NOT HAVE THE USE OF CONSING OF ANY SORT UNTIL THE CALL TO GCNRT.
LISP: MOVNI TT,1 ;AOBJN ON -1 LEAVES [1,,0] ON A KA10
AOBJN TT,.+1 ; BUT [0] ON A KL OR KI
MOVEM TT,KA10P
;CLEAR AND DISABLE INTERRUPT SYSTEM
IFN ITS,[
PION
.SUSET [.SPIRQC,,R70]
.SUSET [.SIFPIR,,R70]
.SUSET [.ROPTION,,TT]
TLO TT,OPTINT+OPTOPC ;NEW-STYLE INTERRUPTS AND NO PC SCREWAGE
.SUSET [.SOPTION,,TT]
TLNN TT,OPTBRK ;IF OUR SUPERIOR CLAIMS TO HANDLE BREAKS,
JRST LISP17 ; AND IF IT CLAIMS TO HAVE LISP'S SYMBOL TABLE
.BREAK 12,[..RSTP,,TT] ; VALRET A STRING TO CAUSE & TYPEOUT MODE
SKIPGE TT ; TO BE S-EXP TYPEOUT (AND % TO BE SQUOZE)
.VALUE [ASCIZ /:IF N :SYMTYP P%<25>(..TAMP\<5C>..TPER\1Q<31>..TAMP\P%<25>):VP /]
LISP17:
] ;END OF IFN ITS
IFN D10*<1-SAIL>, JSP T,D10SET
20$ JSP R,TNXSET ;DECIDE WHICH OPSYS - TENEX OR TOPS20
; AND FIX UP PAGE ACCESSIBILITYS
IFN USELESS*<ITS\D20>, JSP T,SHAREP ;CONSIDER SHARING PAGES WITH OTHER JOBS
PION ;ENABLE INTERRUPTS
;RESET I/O SWITCHES
SETZM TAPWRT ;UWRITE FLAG (^R)
SETZM TTYOFF ;TTY OUTPUT FLAG (^W)
IFN JOBQIO,[
IT$ .DTTY ;SAY THIS JOB WANTS THE TTY, RATHER
IT$ JFCL ; THAN LETTING AN INFERIOR HAVE IT
IT% WARN [RETRIEVE TTY FROM INFERIOR?]
] ;END OF IFN JOBQIO
;RESET FREELISTS TO FORCE A CLEAN GARBAGE COLLECTION
REPEAT NFF, SETZM FFS+.RPCNT ;SET FREELISTS TO NIL
IFN HNKLOG+DBFLAG+CXFLAG, MOVSI A,(SETZ)
IFN HNKLOG,[
REPEAT HNKLOG+1,[
SKIPN HNSGLK+.RPCNT ;HACK TO AVOID CREATING
MOVEM A,FFH+.RPCNT ; UNNEEDED HUNK SEGMENTS
] ;END OF REPEAT HNKLOG+1
] ;END OF IFN HNKLOG
DB$ SKIPN DBSGLK ;DITTO FOR WEIRD NUMERIC TYPES
DB$ MOVEM A,FFD ;THE SETZ BIT IN THE FREELIST
CX$ SKIPN CXSGLK ; POINTER MEANS IT IS OKAY TO
CX$ MOVEM A,FFC ; HAVE NO FREE CELLS AS LONG AS
DX$ SKIPN DXSGLK ; NO ONE TRIES TO CONS ONE
DX$ MOVEM A,FFZ
SETZM GCTIM ;RESET GC TIME (SINCE RUNTIME PROBABLY GOT RESET?)
SETZM ALGCF ;RESET ALLOC FLAG - OKAY TO GC NOW
JSP T,TLVRSS ;RESET VARIOUS "TOP LEVEL VARIABLES"
JSP A,ERINIX ;SET UP PDLS, RESTORE MUNGED DATA, ENABLE INTERRUPTS
;INITIALIZE DEFAULT DIRECTORY NAMES
JSP T,PPNUSNSET
;TRY TO OPEN THE TERMINAL AS AN I/O DEVICE
PUSHJ P,OPNTTY
JFCL
;PERFORM INITIAL GARBAGE COLLECTION (BUT DON'T BOTHER TO COMPACT ARRAYS)
MOVSI T,111111
PUSHJ P,GCNRT
PUSHJ P,UDIRSET
;INITIALIZE CURRENT UNIT
;INITIALIZE VARIOUS BIZARRE TOP-LEVEL VARIABLES
MOVEI T,INR70
MOVEM T,VTTSR
MOVEI A,Q. ;INITIAL VALUE OF * IS *
MOVEM A,V.
MOVE A,VERRLIST ;SET UP FOR EVAL'ING ERRLIST
MOVEM A,VIQUOTIENT
SKIPGE AFILRD
JRST LSPRET
LIHAC: SETOM AFILRD ;HAIRY HAC TO READ, THE FIRST TIME
MOVEI A,TRUTH ; AROUND, FROM THE .LISP. (INIT) FILE
MOVEM A,TAPRED ;(SETQ ^Q T)
JRST HACENT
IFN ITS,[
LISP43: SETZ
SIXBIT \SSTATU\
REPEAT 5, 2000,,TT ;IGNORE USELESS GARBAGE
402000,,TT ;MACHINE NAME
] ;END OF IFN ITS
10$ WAKTTY: JRST (T)
SUBTTL PPNUSNSET UDIRSET TNXSET D10SET
PPNUSNSET:
IFN D10,[
SA% GETPPN TT, ;FOR TOPS10/CMU, USE GETPPN
SA% JFCL ; (GETS PPN OF CURRENT JOB)
SA$ SETZ TT, ;FOR SAIL, WE PREFER DSKPPN
SA$ DSKPPN TT, ; (AS SET BY THE ALIAS COMMAND)
MOVEM TT,USN
MOVEM TT,TTYIF2+F.PPN
MOVEM TT,TTYOF2+F.PPN
] ;END OF IFN D10
IFN ITS,[
MOVE TT,IUSN
MOVEM TT,TTYIF2+F.SNM
MOVEM TT,TTYOF2+F.SNM
] ;END OF IFN ITS
JRST (T)
;INITIALIZE THE NAME OF THE MACHINE IN THE FEATURES LIST
;INITIALIZE (STATUS UDIR)
UDIRSET:
MOVE TT,BPSH ;IF BPEND SOMEHOW
CAMGE TT,@VBPEND ; IS LARGER THAN BPSH,
PUSHJ P,BPNDST ; SET IT EQUAL TO BPSH
IFN D10,[
PUSHJ P,SIXJBN ;INITIALIZE TEMP FILE NAME D10NAM
IFE SAIL,[
MOVEI A,QTOPS10
SKIPE CMUP
MOVEI A,QCMU
] ;END OF IFE SAIL
] ;END OF IFN D10
IFN ITS,[
.CALL LISP43 ;GETS NAME OF ITS (AI, MC, ML, MD, MX, ES) IN TT
.VALUE
SETZ A, ;CONVERT TO ATOMIC SYMBOL
HLRZS TT
IRP X,,[AI,ML,MC,MD,MX,DB,KA]
CAIN TT,(SIXBIT \X\)
MOVEI A,Q!X
TERMIN
SKIPN A
.VALUE
] ;END OF IFN ITS
SA% 20% HRLM A,SITEFT ;SET UP (STATUS FEATURES) FOR SITE NAME
IFN D10,[
IFE SAIL,[
CAIN A,QCMU
JRST .+3
HRRZ A,SITEFT ;Can't figure out a specific site name, so just
HRRM A,OPSYFT ; splice it out, and let the generic name do.
MOVNI T,1 ;FOR NON-SAIL, TRY TO GET
SETZB TT,D ; DEFAULT SNAME BY USING PATH.
MOVEI R,0
MOVE F,[4,,T]
PATH. F,
] ;END OF IFE SAIL
MOVE D,USN ;ON FAILURE, JUST USE USN
MOVE TT,D ;PPNATM EXPECTS PPN TO BE IN AC TT
PUSHJ P,PPNATM
] ;END OF IFN D10
IFN ITS,[
MOVEI A,0
;;; Following will be done by (STATUS UDIR)
;;; MOVE TT,IUSN ;TAKE INITIAL SNAME
;;; PUSHJ P,SIXATM ;CONVERT TO ATOMIC SYMBOL
] ;END OF IFN ITS
IFN ITS\D10,[
MOVEM A,SUDIR
POPJ P,
] ;END OF IFN ITS\D10
IFN D20,[
SKIPE TENEXP
SKIPA 3,[440700,,[ASCIZ \DSK:<MACLISP>SITE.TXT\]]
HRROI 3,[ASCIZ \PS:<MACLISP>SITE.TXT\]
HRROI 1,[ASCIZ \LISP:\]
STDEV ;IS THERE A LISP: DEVICE?
SKIPA 2,3
HRROI 2,[ASCIZ \LISP:SITE.TXT\]
UDRS5: HRLZI 1,(GJ%SHT+GJ%OLD)
GTJFN
JRST UDRS2A
MOVE 3,1
MOVE 2,[<07_36>+OF%RD] ;ASCII BYTES
OPENF
JRST UDRS1A ;WILL HAVE SOMETHING IN 2
MOVNI T,<LPNBUF-1>*BYTSWD
MOVE TT,PNBP
UDRS4: BIN
JUMPE 2,UDRS1 ;HAS 0 IN 2 WHEN JUMPING
IDPB 2,TT
AOJL T,UDRS4
HALTF
UDRS1: MOVE 1,3
CLOSF
JFCL
JRST UDRS1B
UDRS1A: MOVE 1,3
RLJFN
JFCL
UDRS1B: MOVNI T,BYTSWD
IDPB 2,TT ;PADD OUT WITH 0'S
AOJL T,.-1
PUSHJ P,PNBFAT
HRLM A,SITEFT
UDRS2: SETZB 1,2
SETZ 3,
MOVEI A,QLISP
MOVEI B,QPPN
PUSHJ P,REMPROP
HRROI 1,[ASCIZ /LISP:/]
SKIPN TENEXP
STDEV ;IS THERE A LISP: DEVICE?
JRST UDIRSX
MOVEI 1,.LNSJB ;IF SO, GET THE LOGICAL TRANSLATION
HRROI 2,[ASCIZ /LISP/]
MOVE 3,PNBP
LNMST
JRST .+2
JRST UDIRS6
MOVEI 1,.LNSSY
HRROI 2,[ASCIZ /LISP/]
MOVE 3,PNBP
LNMST
JRST UDIRSX
UDIRS6: MOVE D,PNBP
MOVE F,[440700,,T]
SETZ T,
MOVNI R,5 ;PICK UP ASCII FOR REAL DEVICE IN T
UDIRS7: ILDB TT,D
JUMPE TT,UDIRSX
CAIN TT,":
JRST UDIRS8
IDPB TT,F
AOJL R,UDIRS7
JRST UDIRSX
UDIRS8: ILDB TT,D
CAIE TT,"<
JRST UDIRSX
MOVE R,PNBP ;SHUFFLE DOWN THE "<MACLISP>" PART
UDRS8A: ILDB TT,D
JUMPE TT,UDIRSX
CAIN TT,">
JRST .+3
IDPB TT,R
JRST UDRS8A
PUSH FXP,T
MOVNI T,5
SETZ TT,
IDPB TT,R ;FILL OUT WITH A WORD OF NULLS
AOJLE T,.-1
PUSHJ P,PNBFAT
PUSHJ P,NCONS
PUSH P,A
POP FXP,PNBUF
SETZM PNBUF+1
PUSHJ P,PNBFAT
POP P,B
PUSHJ P,CONS
SKIPA B,A
UDIRSX: MOVEI B,Q%ALD ;HAS (PS MACLISP) in it, for default case
SKIPE TENEXP ;OR (DSK MACLISP) for tenex systems
MOVEI B,Q%XALD
MOVEI A,QLISP
MOVEI C,QPPN
JRST PUTPROP
UDRS2A: HRRZ A,SITEFT ;Since we can't figure out a specific site
HRRM A,OPSYFT ; name, just splice it out, and let the generic
JRST UDRS2 ; name from OPSYSTEM-TYPE do.
] ;END OF IFN D20
IFN D20,[
;;;CALLED WITH JSP D, TO SET UP TENEXP. RETURNS WITH FLAG IN A AS WELL
;;; Must save R -- see JCLSET
TNXP: MOVE A,[112,,11] ;MUST BE CALLED WHEN INTERRUPTS ARE OFF
GETTAB A,
JRST TNXST9 ;LOSE IF WE CANT DECIDE!
LDB A,[141400,,A] ;3 FOR TENEX, 4 FOR TOPS-10
SUBI A,2
CAIE A,1
MOVEI A,NIL
MOVEM A,TENEXP
JRST (D)
TNXSET: JSP D,TNXP ;SETUP TENEXP FLAG, RETURN IN A
MOVEI D,1 ;REMODEL CCOC2 BITS FOR ^_
MOVEI B,QTOPS20
JUMPE A,.+3
MOVEI D,3
MOVEI B,QTENEX
DPB D,[100200,,CCOCW2]
MOVE D,CCOCW2
MOVEM D,TTYIF2+TI.ST2
HRLM B,OPSYFT
HRLM B,SITEFT ;UDIRSET SHOULD MODIFY THIS
; MOVEI TT,1_17.-SEGSIZE+1
MOVEI TT,1_18.-SEGSIZE ;Do ALL pages! -- Gumby
SETZM LDXLPC ;Then we better force a new uuolink pure
;page. -Alan
SETZM TTYIF2+TI.ST5
SETZM VTS20P
JUMPN A,TNXST3 ;A STILL HAS TENEXP
MOVEI 1,.PRIIN
RTCHR
ERJMP TNXST3
SETOM VTS20P ;GET TERMINAL-CAPABILITIES-WORD
MOVEM 2,TTYIF2+TI.ST5 ;IF ON A TWENEX
TNXST3: MOVEI D,(TT)
LSH D,-SEGLOG ;GET SEGMENT NUMBER
HLL D,ST(D)
TLNE D,ST.$NX
JRST TNXST1
MOVSI A,.FHSLF
HRRI A,(D) ;GET PAGE NUMBER
JSP T,IPURE$ ;MAKE SURE PAGE EXISTS
AND B,[PA%RD+PA%WR+PA%EX+PA%CPY]
TLO B,(PA%RD) ;LET IT BE READABLE
TLNE D,ST.LS+ST.FX+ST.FL+ST.BGN
TLZA B,(PA%EX) ;DONT EXECUTE FROM DATA AREAS
TLO B,(PA%EX)
TLNE D,ST.PUR
JRST TNXST2
TLNE B,(PA%CPY) ;WHY WOULD BOTH PA%CPY AND PA%WR
TLZA B,(PA%WR) ; BOTH BE ON???
TLNN B,(PA%WR) ;IF ALREADY WRITEABLE, DONT MAKE
TLO B,(PA%CPY) ; COPYABLE
JRST TNXST4
TNXST2: TLZ B,(PA%CPY+PA%WR) ;NOT WRITEABLE, IF A "PURE" PAGE
SKIPN PSYSP ; PSYSP is override
TLO B,(PA%CPY)
TNXST4: SPACS
TNXST1: SUBI TT,SEGSIZE
JUMPG TT,TNXST3
JRST (R)
] ;END OF IFN D20
IFN D10*<1-SAIL>,[
D10SET:
; MOVE TT,[%CCTYP] ;KA 10 VS KL/KI 10 ?
; GETTAB TT,
; JRST .+4 ;DO RUNTIME TEST IF ENTRY NOT THERE
; CAIE TT,.CCKAX
; MOVEI TT,0
; JRST .+3
; MOVNI TT,1 ;AOBJN ON -1 LEAVES [1,,0] ON A KA10
; AOBJN TT,.+1 ; BUT [0] ON A KL OR KI
; MOVEM TT,KA10P
SETZM MONL6P
SETZM CMUP
MOVEI A,QTOPS10
HRLM A,OPSYFT
;MAYBE SOMEDAY WE COULD FIGURE OUT THE ARPA HOST NAME HERE???
HRLM A,SITEFT
MOVE A,[%CNMNT] ;GET MONITOR TYPE WORD
GETTAB A,
MOVEI A,010000 ;ASSUME TOPS-10 IF GETTAB ENTRY NOT THERE
LDB A,[.BP CN%MNT,A] ;1 = TOPS-10, 2 = ITS, 3 = TENEX, 6 = TOPS-20
SOJE A,.+3 ;REAL TOPS-10 SYSTEM, RATHER THAN SIMULATOR?
SETZB A,SGANAM ; ON VARIOUS SIMULATIONS, DONT KILL HISEG
JRST (T)
MOVE A,[%CNVER]
GETTAB A, ;GET MONITOR LEVEL NUMBER
MOVSI A,5
LDB A,[140600,,A]
CAIN A,6
SETOM MONL6P
MOVE A,[%CNFG0]
GETTAB A,
MOVE A,[ASCIZ \CMUCS\]
CAME A,[ASCIZ \CMUCS\]
JRST (T)
SETOM CMUP
MOVEI A,QCMU
HRLM A,OPSYFT
;MAYBE SOMEDAY WE COULD FIGURE OUT THE ARPA HOST NAME HERE???
HRLM A,SITEFT
JRST (T)
] ;END OF D10*<1-SAIL>
SUBTTL JCL INITIALIZATION ROUTINE
;;CALLED WITH RETURN ADDR IN ACC F
;; JCLSET imagines that the job was started with some commmand line, and
;; tries to strip off the subsystem name from the TOPS-20 version
;; SJCLSET gets the entire RSCAN line
JCLSET:
IFN D20,[
TDZA R,R
SJCLSET: MOVEI R,1
] ;END OF IFN D20,
SETZM SJCLBUF ;FIRST WORD OF BUFFER IS COUNT
MOVE 1,[SJCLBUF,,SJCLBUF+1]
BLT 1,SJCLBUF+LSJCLBUF-1
IFN D10,[
MOVE R,[440700,,SJCLBUF+1]
SA% RESCAN
SA$ RESCAN A
SA% CAIA
SA$ SKIPN A
JRST JCST3
JCST4: INCHRS B
JRST JCST3
CAIE B,^M ;IF <CR> OR <ALT> OCCURS ON COMMAND
SA% CAIN B,33
SA$ CAIN B,175
JRST JCST3 ;BEFORE A ";", THEN NO JCL
CAIE B,";
CAIN B,"(
CAIA
JRST JCST4 ;LOOP UNTIL WE FIND A ; OR (
MOVNI D,BYTSWD*LSJCLBUF
JCST2: INCHRS A
JRST JCST1
CAIN B,"( ;IF JCL STARTED WITH A (,
CAIE A,") ; ONLY UP TO THE ) IS JCL,
CAIA ; BUT WE MUST GOBBLE THE WHOLE LINE
SETO B,
JUMPL B,JCST5
AOSG D
IDPB A,R
JCST5: CAIN A,^M ;<CR> OR <ALT> TERMINATES
JRST JCST1 ;THE COMMAND LINE
SA% CAIE A,33
SA$ CAIE A,175
JRST JCST2
JCST1: SKIPLE D
TDZA D,D ;TOO MUCH JCL => NONE AT ALL
ADDI D,BYTSWD*LSJCLBUF
JCST3: INCHRS A ;MAKE SURE NO SUPERFLUOUS CHAR
JFCL
MOVEM D,SJCLBUF
SETZ A,
IDPB A,R ;INSURE AT LEAST ONE NULL BYTE FOLLOWING THE LINE
JRST (F)
] ;END OF IFN D10
IFN D20,[
JSP D,TNXP
MOVEI 1,.RSINI ;ACTIVATE THE COMMAND LINE AS INPUT
SKIPN TENEXP
RSCAN
JRST (F)
MOVEI 1,.RSCNT ;ANYTHING THERE?
RSCAN
JRST (F)
JUMPE 1,(F)
MOVEM 1,5 ;# OF CHARS KEPT IN AC 5
MOVEM 1,4
JUMPN R,[ MOVE 3,[440700,,SJCLBUF+1]
JRST JCL1C ]
MOVEI 3,NIL ; IF NON-(), SAYS ALREADY PASSED ONE "WORD"
MOVE T,[440700,,PNBUF]
JCL1A: SOSGE 5
JRST (F)
PBIN
JUMPE 1,(F)
CAIN 1,^M ;LOOK FOR SPACE OR CR TERMINATING SUBSYSTEM
JRST (F) ; NAME.
CAIN 1," ; LOOP, TO FLUSH THIS WORD
JRST [ JUMPN 3,JCL1B
MOVEI 3,TRUTH
SUB 4,5
CAIE 4,4 ;LOOK FOR "RUN ", AND IF FOUND
JRST JCL1B ; THEN FLUSH IT AND TAKE ONE
IDPB 1,T ; MORE WORD, WHICH SHOULD BE
IDPB 1,T ; THE SUBSYSTEM NAME.
MOVE T,[ASCII \RUN \]
CAMN T,PNBUF
JRST JCL1A
JRST JCL1B ]
CAIN 1,";
JRST JCL1B
IDPB 1,T
JRST JCL1A
JCL1B: SETZM SJCLBUF
MOVEI 1,"
MOVE 3,[440700,,SJCLBUF+1] ;AH! PUT IN AN INITIAL SPACE
IDPB 1,3
AOS SJCLBUF
JCL1C: SOSGE 5
JRST (F) ;LOOP, UNTIL RUN OUT OF RSCAN CHARS
PBIN ;MOVE RSCAN BUFFER TO OUR ADDRESS SPACE
CAIL 1," ; CHECK FOR #\SPACE
JRST [ CAIN 1,";
JRST JCL1B
IDPB 1,3
AOS SJCLBUF
JRST JCL1C ]
MOVEI 2,0
CAIE 1,^V ;CONVERT CONTROL-CHARS, EXCEPT ^V, TAB, CR, AND LF
CAIN 1,^I ; TO NULLS
MOVE 2,1
CAIE 1,^M
CAIN 1,^J
MOVE 2,1
IDPB 2,3
JUMPE 1,(F) ;TERMINATE ON A TRUE NULL BYTE
AOS SJCLBUF
JRST JCL1C
] ;END OF IFN D20
SUBTTL INTERNAL PCLSR'ING ROUTINES
SFXTBL: ;TABLE OF LOCATIONS FOR SFX HACK
MACROLOOP NSFC,ZZM,*
SFXTBI: ;TABLE OF INSTRUCTIONS NORMALLY IN THOSE LOCATIONS
MACROLOOP NSFC,ZZN,*
PROTB: ;TABLE OF INTERRUPT PROTECTION INTERVALS
MACROLOOP NPRO,PRO,*
;;; TABLE MUST BE AN EXACT POWER OF TWO IN LENGTH SO WE CAN
;;; USE SUPER-WINNING BINARY SEARCH METHOD.
HAOLNG LOG2NPRO,<.-PROTB-1>
REPEAT <1_LOG2NPRO>-NPRO,[ INTOK,,777777
] ;END OF REPEAT <1_LOG2NPRO>-NPRO
;;; IT IS OBVIOUSLY USELESS TO USE PROTECT MACROS BEYOND THIS POINT.
;;; EXPUNGING NPRO WILL CAUSE AN ERROR IF THE PROTECT MACROS ARE USED
EXPUNGE NPRO
;;; PUSHJ FXP,$IWAIT
;;; CALLED FROM WITHIN A NORMAL INTERRUPT HANDLER TO DECIDE
;;; WHETHER IT IS SAFE TO ISSUE A USER INTERRUPT.
;;; ON FAILURE, STACKS UP THE INTERRUPT AND SKIPS.
;;; AS FOR UINT0, D CONTAINS THE INTERRUPT DESCRIPTOR WORD.
;;; INTERRUPTS MUST BE DEFERRED; PDL OVERFLOW MUST BE
;;; ENABLED. THE CONTENTS OF INTPDL POINTS TO THE INTPDL ENTRY
;;; FOR THE CURRENT INTERRUPT, WHICH CONTAINS THE SAVED
;;; CONTENTS OF D AND R. FXP MUST BE IN A USABLE STATE.
$IWAIT: HLRZ R,NOQUIT ;IF IN GC, WE ARE IN A BAD STATE
JUMPN R,IWSTAK ; AND SO MUST STACK THE INTERRUPT
HRRZ R,INTPDL
CAIE R,INTPDL+LIPSAV ;FOR NESTED PI LEVEL (E.G. PDL OVERFLOW),
JRST IWSTAK .SEE INTXIT ; ALSO STACK THE INTERRUPT
MOVEI R,(SP) ;IF THE SPECPDL IS IN SOME
MOVE F,(SP) ; KIND OF STRANGE STATE (E.G.
CAME R,ZSC2 ; INTERRUPTED OUT OF SPECBIND)
CAMN F,SPSV ; THEN MUST DO THE INTSFX HACK
JRST IWLOOK
INTSFX: MOVE F,[PUSHJ FXP,SPWIN]
MOVSI R,-NSFC .SEE SFX
MOVEM F,@SFXTBL(R) ;CLOBBER LOCATIONS MARKED BY SFX SO
AOBJN R,.-1 ; SFXPRO'ED ROUTINE WILL RETURN TO SPWIN
HRRZ F,INTPDL ;RESTORE AC'S, AND SAVE
EXCH D,IPSD(F) ; INTERRUPT DESCRIPTOR
MOVE R,IPSR(F)
PUSH FXP,IPSPC(F) ;GET PC AND FLAGS
MOVEI F,IPSF(F)
PUSH FXP,F
MOVE F,(F)
JRST 2,@-1(FXP) ;CONTINUE WHATEVER WE WERE DOING
;;; RETURN FROM SFX HACK. ROUTINE HAS DONE PUSHJ FXP,SPWIN.
SPWIN: MOVEM F,@-1(FXP) ;PRESERVE F
HRRZ F,INTPDL
POP FXP,IPSPC(F) ;PUT PC BACK INTO INTPDL FRAME,
SOS IPSPC(F) ; BACKED UP TO THE CLOBBERED INSTRUCTION
SUB FXP,R70+2
MOVEM R,IPSR(F) ;SAVE ACS D AND R
EXCH D,IPSD(F)
MOVSI R,-NSFC
SPWIN1: MOVE F,SFXTBI(R) ;RESTORE THE LOCATIONS THAT WE
MOVEM F,@SFXTBL(R) ; CLOBBERED WITH PUSHJ FXP,SPWIN
AOBJN R,SPWIN1
JRST IWWIN ;WE HAVE WON
IWLOOK: HRRZ F,INTPDL ;FAST BINARY SEARCH OF PROTECT
HRRZ R,IPSPC(F) ; TABLE ON PC INTERRUPTED FROM
PUSH FXP,D
MOVEI D,0
REPEAT LOG2NPRO,[
MOVE F,PROTB+<1_<LOG2NPRO-.RPCNT-1>>(D)
CAIL R,(F)
ADDI D,1_<LOG2NPRO-.RPCNT-1>
] ;END OF REPEAT LOG2NPRO
MOVS R,PROTB(D)
POP FXP,D
HRRZ F,INTPDL ;A USEFUL VALUE FOR F
JRST (R) ;GO TO PLACE WHICH HANDLES THIS INTERVAL
;;; COME HERE TO MOVE THE PC FORWARD OUT OF A PROTECTED INTERVAL
;;; BY EXECUTING INTERVENING INSTRUCTIONS. THE ACS ARE CORRECTLY
;;; AVAILABLE DURING THIS EXECUTION, EXCEPT FXP. THE PC FLAGS ARE
;;; NOT PRESERVED. THUS, CODE IN SUCH A PROTECTED INTERVAL SHOULD
;;; NOT USE FXP OR THE PC FLAGS. NO JUMP INSTRUCTIONS MAY BE USED;
;;; HOWEVER, SKIPS ARE HANDLED CORRECTLY.
.SEE XCTPRO
INTXCT: PUSH FXP,IPSPC(F)
EXCH D,IPSD(F) ;RESTORE ACS D, R, AND F
MOVE R,IPSR(F) ;FLAGS ARE *NOT* RESTORED
MOVEI F,IPSF(F) ;ALSO, FXP IS OUT OF WHACK (BEWARE!)
PUSH FXP,F
MOVE F,(F)
XCT @-1(FXP) ;EXECUTE AN INSTRUCTION
CAIA
AOS -1(FXP) ;HANDLE SKIPS CORRECTLY
AOS -1(FXP)
MOVEM F,@(FXP)
SUB FXP,R70+1
HRRZ F,INTPDL
MOVEM R,IPSR(F)
EXCH D,IPSD(F)
POP FXP,IPSPC(F)
JRST IWLOOK ;MAY NEED TO XCT SOME MORE
INTSYP: SOS NPFFY2 .SEE SYCONS
INTSYQ: SOS NPFFY2
INTSYX: MOVEI R,PSYCONS
JRST INTBK1
INTROT: HLRZ R,R ;PROTECT CODE OF THE FORM
SUBI R,1 ; ROT A,-SEGLOG
ROT A,SEGLOG ; ... MUNCH ...
JRST INTBK1 ; ROT A,SEGLOG
INTPPC: HLRZ R,R ;PROTECT PURE CONSER
SUBI R,1 ;BACK UP TO THE AOSL OR WHATEVER
HRRM R,IPSPC(F)
SOS @(R) ;RESTORE THE COUNTER
JRST INTOK
INTC2X: HLRM B,A ;MUST PROTECT LEFT HALF OF B FOR CONS
MOVEI R,CONS1 ;HAIRY KIND OF BACKUP FOR CONS
JRST INTBK1
INTC2Y: HLRM B,A ;MUST PROTECT LEFT HALF OF B FOR CONS
MOVEI R,%CONS1 ;HAIRY KIND OF BACKUP FOR CONS
JRST INTBK1
INTACT: HRRZ R,UUTSV .SEE UUOACL
JRST IWLOOK
INTTYX: HLRZ R,R ;ARRANGE TO GO TO INTTYR, WHICH WILL
PUSH P,R ; GET THE TTSAR BACK INTO T, THEN POPJ
MOVEI R,INTTYR .SEE TYOXCT TYIXCT TYICAL
HRRZS INHIBIT .SEE .5LKTOPOPJ
JRST INTBK1
INTACX: MOVSS A .SEE ACONS ;(RESTORES A FOR BACKUP)
MOVEI R,ACONS ;MAKE THIS THE NEW PC
JRST INTBK1
20$ INTSLP: ;FOR INTERRUPT FROM D20 SLEEP, MUST FLUSH "A"
INTZAX: SETZ A, ;CONSERS WHICH DON'T PROTECT THEIR FREELIST!
INTBAK: HLRZ R,R ;BACK UP PC TO BEGINNING
INTBK1: HRRM R,IPSPC(F) ; OF INTERVAL
INTOK: TLZ R,-1
HS$ 10$ CAIL R,HSGORG ;NO ARRAYS IN HIGH SEGMENT!
HS$ 10$ JRST IWWIN
CAML R,@VBPEND
JRST INTSFX
IWWIN: HRRZ F,INTPDL ;WE HAVE WON!
POPJ FXP,
;;; NEED WE PIOF AROUND THIS JSR UISTAK ?? E.G. WHAT ABOUT MEMERR?
IWSTAK: JSR UISTAK ;WE ARE IN A BAD STATE --
AOS (FXP) ; STACK UP THE INTERRUPT
JRST IWWIN
PGTOP INT,[INTERRUPT AND UUO HANDLERS]
SUBTTL PATCH AREA, STRUCT INSERT, BIT TABLES, AND SPACE CALCULATIONS
PATCH: PAT: XPATCH:
BLOCK PTCSIZ
PAGEUP
EPATCH==.-1
INFORM [LENGTH OF PATCH AREA = ]\EPATCH-PATCH
PG% BSYSSG==HILOC-STDHI ;CROCK - BEWARE RELOCATION!
SPCTOP SYS,,[SYSTEM]
PG% EXPUNGE BSYSSG
NPURPG==<.-BPURPG>/PAGSIZ
10$ $LOSEG
INUM==.
$INSRT STRUCT ;INITIAL LIST STRUCTURE
;;; 10$ NOW IN ** LOW SEGMENT **
NBITB==NIFSSG+NIFXSG+NIFLSG+NBNSG
ZZ==<<NBITB+1>*BTBSIZ+SEGSIZ-1>/SEGSIZ
IFN ZZ-BTSGGS,[
WARN [NEEDED NUMBER OF INITIAL BIT TABLE SEGMENTS (]\ZZ,[) DOESN'T
MATCH GUESS. (BTSGGS=]\BTSGGS,[)
]
] ;END OF IFN ZZ-BTSGGS
.ALSO .ERR
IFN LOBITSG, BFBTBS=BTBLKS+NBITB*BTBSIZ
.ELSE,[ ;;; NOTE WELL! FIRST FS SEGMENT GETS FIRST
;;; BIT BLOCK! (SEE NUNMRK, GCP6)
SPCBOT BIT
BTBLKS: -1 ;THIS WILL BE RESET BY GCINBT
BLOCK NBITB*BTBSIZ-1
BFBTBS: ;BEGINNING OF FREE BIT BLOCKS
PAGEUP
SPCTOP BIT,ST,[BIT BLOCK]
] ;END OF .ELSE
NBPSSG==1*SGS%PG ;INIT WILL MUNG ST AND PURTBL ANYWAY TO PRESERVE ALLOC
NFXPSG==1*SGS%PG ;PDL AREAS FOR INIT AND ALLOC
NFLPSG==1*SGS%PG
NPSG==1*SGS%PG
NSPSG==1*SGS%PG ;ALLOC ALTERS ALL PDL PARAMETERS!!!
IFN PAGING,[
NXFXPSG==1*SGS%PG
NXFLPSG==1*SGS%PG
NXPSG==2*SGS%PG
NXSPSG==2*SGS%PG
IFE SFA,[
IFN ML, NSCRSG==2*SGS%PG
.ELSE NSCRSG==3*SGS%PG ;ALLOW FOR PDP6 PAGE (P6)
] ;END IFE SFA
IFN SFA,[
IFN ML, NSCRSG==1*SGS%PG
.ELSE NSCRSG==2*SGS%PG ;ALLOW FOR PDP6 PAGE (P6)
] ;END IFN SFA
;;; NUMBER OF NON-EXISTENT MEMORY SEGMENTS
;;; (TAKE ALL OF CORE AND SUBTRACT OUT EVERYTHING USEFUL!!!)
NNXMSG==NSEGS
IRP SPC,,[ZER,ST,SYS,SAR,VC,XVC,IS2,SYM,XXA,XXZ,SY2,PFX,PFS,PFL,XXP
IFS,IFX,IFL,BN,XXB,BIT,BPS,FXP,XFXP,FLP,XFLP,P,XP,SP,XSP,SCR]
NNXMSG==NNXMSG-N!SPC!SG
TERMIN
;;; DETERMINE ORIGINS FOR ALL SPACES ABOVE THIS POINT
ZZX==.
IRP SPC,,[BPS,NXM,FXP,XFXP,FLP,XFLP,P,XP,SP,XSP,SCR]
B!SPC!SG==ZZX
ZZX==ZZX+N!SPC!SG*SEGSIZ
TERMIN
SPDLORG==MEMORY-<NSCRSG+NSPSG+NXSPSG>*SEGSIZ
PDLORG==SPDLORG-<NPSG+NXPSG>*SEGSIZ
FLPORG==PDLORG-<NFLPSG+NXFLPSG>*SEGSIZ
FXPORG==FLPORG-<NFXPSG+NXFXPSG>*SEGSIZ
] ;END OF IFN PAGING
IFE PAGING,[
ZZX==.
IRP SPC,,[FXP,FLP,P,SP,BPS]
B!SPC!SG==ZZX
ZZX==ZZX+N!SPC!SG*SEGSIZ
TERMIN
SPDLORG==BSPSG
PDLORG==BPSG
FLPORG==BFLPSG
FXPORG==BFXPSG
] ;END OF IFE PAGING
SUBTTL APOCALYPSE (END OF THE WORLD)
;FOR REL ASSEMBLIES, INIT AND ALLOC CODE OVERLAP INITIAL BPS
10$ LOC BBPSSG
$INSRT ALLOC ;INITIALIZATION AND ALLOCATION ROUTINES
PRINTX \
\ ;JUST TO MAKE LSPTTY LOOK NICER
EXPUNGE ZZ ZY ZX ZZX ZZY ZZZ ZZW
HS$ 10$ IF2, BSYSSG==HSGORG ;ANTI-RELOCATION CROCK
IF2, MACROLOOP NBITMACS,BTMC,* ;FOR BIT TYPEOUT MODE
ENDLISP:: ;END OF LISP, BY GEORGE!
VARIABLES ;NO ONE SHOULD USE VARIABLES!
IFN .-ENDLISP, WARN [OKAY, WHO'S THE WISE GUY USING VARIABLES?]
IFN D10,[
$HISEG
ENDHI:: ;END OF HIGH SEGMENT
] ;END OF IFN D10
IF2, ERRCNT==:.ERRCNT ;NUMBER OF ASSEMBLY ERRORS
END INITIALIZE
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