perm filename LISP[MAC,LSP] blob
sn#404887 filedate 1978-12-12 generic text, type C, neo UTF8
COMMENT ⊗ VALID 00237 PAGES
C REC PAGE DESCRIPTION
C00001 00001
C00007 00002 -*-MIDAS-*-
C00012 00003
C00016 00004
C00020 00005
C00022 00006
C00027 00007
C00029 00008
C00032 00009
C00036 00010
C00038 00011
C00041 00012
C00043 00013
C00045 00014
C00048 00015
C00054 00016
C00056 00017
C00058 00018
C00063 00019
C00065 00020
C00070 00021
C00074 00022
C00077 00023
C00081 00024
C00085 00025
C00088 00026
C00091 00027
C00095 00028
C00099 00029
C00105 00030
C00110 00031
C00112 00032
C00116 00033
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C00130 00035
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C00138 00037
C00142 00038
C00144 00039
C00146 00040
C00150 00041
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C00155 00043
C00158 00044
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C00191 00055
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C00209 00060
C00211 00061
C00213 00062
C00216 00063
C00218 00064
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C00379 00119
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C00551 00180
C00553 00181
C00555 00182
C00559 00183
C00572 00184
C00582 00185
C00590 00186
C00595 00187 here's the code to make the setq t nil etc work right. The sos ipspc(f)
C00600 00188
C00602 00189
C00607 00190
C00609 00191
C00611 00192
C00612 00193
C00615 00194
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C00656 00208
C00659 00209
C00661 00210
C00663 00211
C00666 00212
C00668 00213
C00671 00214
C00674 00215
C00676 00216
C00679 00217
C00681 00218
C00683 00219
C00685 00220
C00687 00221
C00690 00222
C00692 00223
C00695 00224
C00704 00225
C00715 00226
C00717 00227
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C00721 00229
C00723 00230
C00726 00231
C00729 00232
C00731 00233
C00734 00234
C00738 00235
C00740 00236
C00741 00237 ββ
C00742 ENDMK
C⊗;
;;; -*-MIDAS-*-
;;; **************************************************************
;;; ***** MACLISP ****** LISP INTERPRETER AND SYSTEM *************
;;; **************************************************************
;;; ** (C) COPYRIGHT 1978 MASSACHUSETTS INSTITUTE OF TECHNOLOGY **
;;; ****** THIS IS A READ-ONLY FILE! (ALL WRITES RESERVED) *******
;;; **************************************************************
IFE .OSMIDAS-<SIXBIT \ITS\>, .SYMTAB 16001. ;ENSURE ROOM FOR MANY SYMBOLS
.ELSE .SYMTAB 7000.
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
VERSION==.FNAM2 ;BY CONVENTION, THE SIXBIT FOR THE VERSION NUMBER
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
KA10==0 ;1 FOR KA10 PROCESSOR (WILL ALSO WORK ON KI AND KL)
KI10==0 ;1 FOR KI10 PROCESSOR (WILL ALSO WORK ON KL)
KL10==0 ;1 FOR KL10 PROCESSOR ONLY
ML==0 ;1 SAYS THIS LISP IS FOR ML (OR MC) INSTEAD OF AI (ONLY IF ITS==1)
MOBIOF==0 ;DISPLAY SLAVE, VIDISSECTOR, A/D, D/A, AND PLOTTER ROUTINES FLAG
; WILL GO AWAY WHEN NEWIO MAKES IT FASLOADABLE
BIGNUM==1 ;MULTIPLE PRECISION ROUTINES FLAG
EDFLAG==1 ;ROUTINES FOR LISP EDITOR FLAG
; IF 0, CAUSES EDIT TO HAVE AN AUTOLOAD PROPERTY
OBTSIZ==777 ;LENGTH OF OBLIST
PTCSIZ==40 ;MINIMUM SIZE FOR PATCH AREA
FUNAFL==1 ;FUNARG, FAKE ALIST, AND LABEL STUFF
NEWRD==0 ;NEW READER FORMAT ETC
QIO==0 ;QUUX'S NEWIO STUFF
JOBQIO==1 ;SUPPORT FOR INFERIOR PROCEDURES
HNKLOG==6 ;LOG2 OF SIZE (IN WORDS) OF LARGEST HUNK (0 => NO HUNKS)
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) IN QIO, CLI INTERRUPT SUPPORT
; 10) IN QIO, MAR-BREAK SUPPORT
; 11) IN QIO, AUTOLOAD PROPERTIES FOR ALLFILES ETC.
; 13) CLEVER TERPRI-BEFORE-THE-PARENS HACK
; 14) HUGE TABLE FOR RANDOM NUMBER GENERATOR
LHFLAG==1 ;1 FOR CRETINOUS LH FEATURE FOR LONG-TERM MEMORY FOR OWL
NIOBFS==1 ;NUMBER OF I/O BUFFERS FOR D10 SYSTEMS
DBFLAG==0 ;1 FOR DOUBLE-PRECISION FLOATING-POINT NUMBERS
CXFLAG==0 ;1 FOR COMPLEX ARITHMETIC
NARITH==0 ;1 FOR NEW ARITHMETIC PACKAGE
SFA==0 ;1 FOR SFA I/O
;" 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
LVRNO==.FNAM2
IFGE LVRNO,[
LVRNO==<LVRNO←-6>+<SIXBIT \1\> ;HACK FOR CROSSING 1000'S
;IFN <<LVRNO←-30>&77>-'9, LVRNO==LVRNO+<1←36> ;INSTALL THIS LINE WHEN 1900 REACHED
] ;END OF IFGE LVRNO
PRINTX \MACLISP VERSION \ ;PRINT OUT VERSION OF THIS LISP
.TYO6 .OFNM2
PRINTX \ [\ ;WATCH OUT FOR THE BRACKETS!
.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
;;; HACK FLAGS AND PARAMETERS
DEFINE ZZZZZZ X,SYM,VAL
IFSE [X]-, PRINTX \* \
.ELSE PRINTX \ \
PRINTX \SYM=VAL
\
TERMIN
PRINTX \INITIAL SWITCH VALUES (*=EXPERIMENTAL):
\
;X=- => EXPERIMENTAL SWITCH
IRPS S,X,[ITS,TOPS10,TOPS20,SAIL,TENEX-CMU-KA10,KI10-KL10-
ML,MOBIOF,BIGNUM,EDFLAG,OBTSIZ,FUNAFL,QIO,JOBQIO,HNKLOG,USELESS,
DBFLAG-CXFLAG-NARITH-SFA-]
ZZZZZZ [X]S,\S
TERMIN
EXPUNGE ZZZZZZ
PRINTC \REDEFINITIONS:
\
.INSRT TTY:
PRINTC \
\
;;; ALL FLAGS WHICH ARE NON-ZERO MUST BE ONES: MUCH CONDITIONAL
;;; ASSEMBLY DOES ARITHMETIC WITH THEM.
IRP FOO,,[ITS,TOPS10,TOPS20,SAIL,TENEX,CMU,KA10,KI10,KL10
ML,MOBIOF,BIGNUM,EDFLAG,FUNAFL,NEWRD,QIO,JOBQIO,USELESS
LHFLAG,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
IRP OS,,[ITS,DEC,SAIL,TENEX,CMU]FLAG,,[ITS,TOPS10,SAIL,TENEX,CMU]
IFE .OSMIDAS-<SIXBIT \OS\>, MUTXOR [ITS,TOPS10,TOPS20,SAIL,TENEX,CMU]OS
TERMIN
MUTXOR [KA10,KI10,KL10]KA10
;;; IF1
D10==:TOPS10\SAIL\CMU ;SWITCH FOR DEC-10-LIKE SYSTEMS
D20==:TOPS20\TENEX ;SWITCH FOR DEC-20-LIKE SYSTEMS
PAGING==:D20\ITS ;SWITCH FOR PAGING SYSTEMS
IFNDEF HISEGMENT, HISEGMENT==:1 ;ASSUME HISEGMENT
;;; 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, MOBIOF==:0
INSIST IFE ML+<1-ITS>, MOBIOF==:1
INSIST IFN QIO, MOBIOF==:0
INSIST IFE QIO, JOBQIO==:0
INSIST IFE ITS, JOBQIO==:0
INSIST IFE ITS, LHFLAG==:0
INSIST IFG SAIL*<6-NIOBFS>, NIOBFS==:6
;INSIST IFN TOPS20, KA10==:0
;INSIST IFN TOPS20, KI10==:0
;INSIST IFN TOPS20, KL10==:1
SEGLOG==:11 ;LOG2 OF # OF WORDS PER SEGMENT (WARNING! BUILT INTO NCOMPLR!)
INSIST IFGE HNKLOG-SEGLOG, HNKLOG==:SEGLOG/2
OBTSIZ==:OBTSIZ\1 ;MUST BE ODD
DXFLAG==:DBFLAG*CXFLAG
;;; IF1
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
;;; 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
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 SAIL,SAIL,SAIDFS,.DECDF,SPCWAR,DECBTS,.GTSTS
HACK TENEX,TENEX,TNXDFS,.TNXDF,JSYS,TWXBTS,GJ%FOU
HACK CMU,CMU,CMUDFS,.DECDF,CMUDEC,DECBTS,.GTSTS
TERMIN
;;; CONFLICTS WITH UNLOCKI MACRO AND SEGSIZ VARIABLE
IFN SAIL, EXPUNGE UNLOCK SEGSIZ
;;; CONFLICTS WITH VARIOUS LABL DEFINITIONS UNDER TENEX/TWENEX
IFN TENEX\TOPS20,[
$GET==:GET
$TIME==:TIME
EXPUNGE GET,TIME
] ;END IFN TENEX\TOPS20
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 CMUDFS
$INSRT ITSBTS
$INSRT DECBTS
$INSRT TWXBTS
| ;END OF COMMENT
IFN D10\D20,[
DEFINE HALT
JRST 4,.!TERMIN
EXPUNGE .VALUE
EQUALS .VALUE HALT
DEFINE .LOSE <A>
JRST 4,.-1!TERMIN
] ;END OF IFN D10\D20
;;; IF1
;;; LOSING KL10 HAS A FIX INSTRUCTION
EXPUNGE FIX
;;; 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 DEFNS ;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
MEMORY==:<1,,0> ;SIZE 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+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==4*PAGSIZ ;DEFAULT TOTAL PDL SIZES
ALFXP==4*PAGSIZ
ALFLP==1*PAGSIZ
ALSPDL==2*PAGSIZ
] ;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
DEFINE FUMBLE FF,RIDER,SPECS ;FOR SPACES
STUMBLE FUMBLE,FF,RIDER,0,SEGSIZ,[SPECS]
TERMIN
DEFINE GRUMBLE PDL,RIDER,SPECS ;FOR PDLS
STUMBLE GRUMBLE,PDL,RIDER,20,100,[SPECS]
TERMIN
DEFINE STUMBLE NAME,FF,RIDER=[IFE 0],LO,HI,%SPECS
ZZZ==0
IRP SPEC,,[%SPECS]
IRP COND,VALS,[SPEC]
IFN COND,[
IRP M,,[MIN,MAX]Q,,[LO,HI]V,,VALS
RIDER,[
IFL V-Q, M!!FF==:Q
.ELSE M!!FF==:V
]
.ELSE M!!FF==:0
TERMIN
ZZZ==ZZZ+1
]
.ISTOP
TERMIN
TERMIN
IFN ZZZ-1, WARN \ZZZ,[ SPECS SUCCEEDED FOR NAME FF]
EXPUNGE ZZZ
TERMIN
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
Q% STDMSK=:IB<TTY+ILOP+IOC+MPV+PDLOV+TIMER+ALARM+PURE>
Q% DBGMSK=:IB<TTY+PDLOV>
] ;END OF IFN ITS
IFN D10,[
IB.PDLOV==AP.POV ; PDL OVERFLOW
IB.MPV==AP.ILM ;+ MEMORY PROTECTION VIOLATION
Q% STDMSK==AP.REN+AP.POV+AP.ILM+AP.NXM
SA% Q$ STDMSK==AP.REN+AP.POV+AP.ILM+AP.NXM+AP.PAR
SA$ Q$ STDMSK==<404,,230000>
] ;END OF IFN D10
;;; IF1
;;; ********** I/O CHANNEL ASSIGNMENTS **********
IFE QIO,[
ERRC==:0 ;ERROR MESSAGE CHANNEL
TMPC==:ERRC
TYIC==:1 ;TTY INPUT
TYOC==:2 ;TTY OUTPUT
UTIC==:3 ;UREAD ("U-TAPE") INPUT (↑Q)
UTOC==:4 ;UWRITE OUTPUT (↑R)
LPTC==:5 ;LINE PRINTER (↑B) OUTPUT
DSIC==:6 ;DISK CHANNEL (USED FOR BOTH INPUT AND OUTPUT)
IFN MOBIOF,[
IPLC==:7 ;INTERPRETIVE PLOTTER
VIDC==:10 ;VIDISECTOR
NVDC==:11 ;FAKE VIDISECTOR
IMXC==:12 ;MULTIPLEXER INPUT
OMXC==:13 ;MULTIPLEXER OUTPUT
BVDC==:14 ;BLOCK VIDI INPUT
DISC==:15 ;DISPLAY OUTPUT
SIXC==:16 ;PDP-6 CHANNEL (DISPLAY SLAVE)
FTVC==:BVDC ;CANT BE USING BOTH FAKE TV AND BLOCK VIDI INPUT
] ;END OF IFN MOBIOF
IFN D10,[
DELC==:7 ;RANDOM I/O CHANNEL FOR DEC-10
] ;END OF IFN D10
IT$ IFE MOBIOF, NOFCH==:7 ;NUMBER OF I/O CHANNELS
IT$ IFN MOBIOF, NOFCH==:17
10$ NOFCH==:10
] ;END OF IFE QIO
;;; 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$ Q% P6=MEMORY-3*PAGSIZ ;PAGE 0 OF PDP6 SLAVE IS MAPPED INTO PDP-10 MEMORY
] ;END OF IF1
SUBTTL FIRST LOCATIONS, UUO AND INTERRUPT VECTORS
;IFE <ITS+TENEX>*USELESS, NPGTPS==0
IFE 0, NPGTPS==0
TOPN==0
BOTN==0
.XCREF TOPN BOTN
NPURTR==0
Q$ 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 ;DEC TWO-SEGMENT RELOC OUTPUT
HS% .DECREL ;ONE SEGMENT ASSEMBLY
%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$ .DECREL ;FOR TOPS-20 NEED DEC RELOCATABLE FORMAT
20$ LOC 140 ;BUT FORCE ABSOLUTE ADDRESSING
.YSTGWD ;STORAGE WORDS ARE OKAY NOW
FIRSTLOC:
IFN D10,[
HS$ HILOC==.+400000 ;HISEG 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 $LOSEG
] ;END OF IFN D10
IFN PAGING,[
STDLO==0
STDHI==0
CURSTD==0
] ;END OF IFN PAGING
10% BZERSG==0 ;BEGINNING OF "ZERO" SEGMENT(S)
10$ BZERSG==FIRSTLOC-STDLO
LOC 41
JSR UUOH ;UUO HANDLER
10X WARN [TENEX INTERRUPT VECTOR?]
LOC FIRSTLOC
JRST GOINIT
LISPSW: %ALLOC ;ALLOC CLOBBERS TO BE "LISP"
SUSFLS: NIL ;NON-NIL MEANS FLUSH SHARABLE PAGES BEFORE SUSPENDING
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 $XLOST
.SEE UUOGL2
;;; 37 HOLDS ≠Q DURING A USER TYPEOUT INSTRUCTION
.SEE PSYM1
FORTY: 0 ;.40ADDR USER VARIABLE POINTS HERE
JSR UUOGLEEP ;SYSTEMIC UUO HANDLER
Q% JSR INT ;SYSTEMIC INTERRUPT HANDLER
Q$ -LINTVEC,,INTVEC ;SYSTEMIC INTERRUPT HANDLER
;;; 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
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
Q% .SEE INTW0
Q$ .SEE $IWAIT
;;; **** THERE MUST BE NO MORE USES OF THE MACRO SFX BEYOND HERE ****
EXPUNGE SFX SFSTO
SUBTTL INTERRUPT FLAGS AND VARIABLES
;;; INTFLG INDICATES WHETHER IN INTERRUPT IS PENDING:
;;; 0 => NO INTERRUPT
;;; -1 => USER INTERRUPT PENDING (STACKED IN INTAR)
;;; -2 => ↑X QUIT PENDING, DON'T RESET TTY
;;; -3 => ↑G QUIT PENDING, DON'T RESET TTY
;;; -6 => ↑X QUIT PENDING, DO RESET TTY
;;; -7 => ↑G QUIT PENDING, DO RESET TTY
INTFLG: 0
;;; MAY NOT ↑G/↑X QUIT OR ALLOW USER INTERRUPTS IF NOQUIT NON-ZERO
;;; NON-ZERO IN LH MEANS GC IN PROGRESS; IMPLIES
;;; PDL POINTERS AND NIL MAY BE CLOBBERED
;;; NON-ZERO ONLY IN RH MEANS PDL POINTERS AND NIL ARE OK
NOQUIT: 0
;;; MAY NOT ALLOW "REAL TIME" INTERRUPTS (CLOCK AND TTY) WHEN
;;; UNREAL IS NON-ZERO. MUNGED BY THE FUNCTION NOINTERRUPT.
;;; 0 => ALL INTERRUPTS OKAY
;;; -1 => NO INTERRUPTS OKAY
;;; 'TTY => ALARMCLOCK OKAY, TTY NOT OKAY
UNREAL: 0
IFE QIO,[
QITC: 0 ;PLACES FOR VARIOUS INTERRUPT-TYPE GUYS TO SAVE ACS
QITD: 0
QITR: 0
] ;END OF IFE QIO
Q$ 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>*QIO, OIMASK: 0 ;HOLDS OLD INT MASK WHEN INTS ARE DISABLED
SA% INTMSK:
IMASK: STDMSK ;INTERRUPT MASK WORD
Q$ 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
IFE QIO,[
WAITFL: 0 ;NON-ZERO => INTWAIT IS LETTING AN SFXPRO'ED ROUTINE FINISH
WAITA: 0 ;A TEMPORARY FOR INTWAIT
WAITD2: 0 ;USED BY WAIT TO SAVE .DF2
] ;END OF IFE QIO
;;; 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
;;; 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
;;; 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 15 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:
2 ;CTRL-B
; 3 ;CTRL-C
0 ;DON'T ENABLE ↑C WHILE DEBUGGING
4 ;CTRL-D
7 ;CTRL-G
21 ;CTRL-Q
22 ;CTRL-R INTERRUPT CHANNEL 5
;BREAK IN TOPS-20 INTERRUPT CHANNEL NUMBERING
24 ;CTRL-T INTERRUPT CHANNEL 24.
26 ;CTRL-V
27 ;CTRL-W
30 ;CTRL-X
32 ;CTRL-Z
REPEAT 6, 0 ;INITIALLY UNUSED
;APPARENTLY CHANNEL 35. IS ALSO WEDGED, DON'T USE IT
CINTSZ==.-CINTAB
] ;END IFN D20
SUBTTL ENTRIES TO VARIOUS ROUTINES CALLED BY JSR
UISTAK: 0 ;STACK UP (ACTUALLY, QUEUE) A USER INTTERRUPT
JRST UISTK1
IFE QIO,[
INTWAIT: 0 ;CHECK TO SEE IF USER INTERRUPT OKAY NOW.
JRST INTW0
SPWR: 0 ;"SPECPDL WINNING RETURN" USED BY INTWAIT TO
JRST SPWR0 ; KEEP SP CONSISTENT. SEE ALSO THE SFX MACRO.
CNTROL: 0 ;PROCESS A CONTROL CHARACTER.
JRST CNTRL1 ;ASCII CODE IS IN ACCUMULATOR A.
IFE D10,[
PDLHAK: 0 ;FIGURE OUT WHICH PDL OVERFLOWED AND FIX IT.
JRST PDLH0 ;IF A NON-ZERO, HAS ADDRESS OF PDL POINTER.
] ;END OF IFE D10
] ;END OF IFE QIO
GCRSR: 0 ;GC RESTORE. CLEANS UP JUST BEFORE AN
JRST GCRSR0 ; ABNORMAL EXIT (GCEND IS NORMAL EXIT).
IFN ITS+D20,[
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 ITS+D20
IFN MOBIOF,[
CLZDIS: 0 ;CLOSE THE DIS DEVICE
JRST CLZDS1
DISLEEP: 0 ;SLEEP AND WAIT FOR DISPLAY SLAVE
JRST DISLP1
DISLP2: 0 ;A COUNTER FOR WAITING OUT REQUESTS
] ;END OF IFN MOBIOF
IFN QIO,[
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 $OPEN.
;;; CHANNEL 0 (TMPC) IS PERMANENTLY LOCKED FOR USE OF THE ERR
;;; DEVICE, FOR UPROBE, ETC. NOTE THAT ITS PUTS .OPEN
;;; AND .CALL FAILURE CODES ON CHANNEL 0 ARBITRARILY.
IFN ITS+D10, LCHNTB==:20 ;NUMBER FIXED BY OPERATING SYSTEM
IFN D20, MAYBE LCHNTB==:40 ;THIS NUMBER IS BASICALLY ARBITRARY
CHNTB:
OFFSET -.
TMPC:: 400000,,NIL ;FIXED TEMPORARY CHANNEL
IFGE LCHNTB-., BLOCK LCHNTB-.
.ELSE WARN [TOO MANY FIXED I/O CHANNELS]
OFFSET 0
;;; DEC-10 I/O BUFFER HEADERS (MUST REMAIN FIXED IN CORE)
;;; THEY ARE NAMED BFHD0, BFHD1, ..., BFHD17.
IFN D10, REPEAT LCHNTB, CONC BFHD,\.RPCNT,: BLOCK 3
DPAGEL: 60. ;INITIAL DEFAULT PAGEL
DLINEL: 70. ;INITIAL DEFAULT LINEL
IFN JOBQIO,[
LJOBTB==10 ;EIGHT INFERIOR PROCEDURES
JOBTB: BLOCK LJOBTB
] ;END OF IFN JOBQIO
;;; IFN QIO
SUBTTL INITIAL TTY INPUT FILE ARRAY
-F.GC,,TTYIF2 ;GC AOBJN POINTER
TTYIF1: JSP TT,1DIMS
TTYIFA ;POINTER BACK TO SAR
0 ;ILLEGAL FOR USER TO ACCESS - DIMENSION IS ZERO
TTYIF2:
OFFSET -.
FI.EOF:: NIL ;EOF FUNCTION (??)
FI.BBC:: 0,,NIL ;BUFFERED BACK CHARS
FI.BBF:: NIL ;BUFFERED BACK FORMS
TI.BFN:: QTTYBUF ;PRE-SCAN FUNCTION
FT.CNS:: TTYOFA ;ASSOCIATED TTY OUTPUT FILE
REPEAT 3, 0 ;UNUSED SLOTS
F.MODE:: SA% FBT.CM,,2 ;MODE (ASCII TTY IN SINGLE)
SA$ 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
IFN ITS+D20+SAIL,[
TI.ST1::
IT$ STTYW1 ;TTY STATUS WORDS
20$ CCOC1
SA$ SACTW1
TI.ST2::
IT$ STTYW2
20$ CCOC2
SA$ SACTW2
SA$ TI.ST3:: SACTW3
SA$ TI.ST4:: SACTW4
SA% BLOCK 2
] ;END OF IFN ITS+D20+SAIL
.ELSE BLOCK 4
0 .SEE ATO.LC
AT.CHS:: 0 ;CHARPOS
AT.LNN:: 0 ;LINENUM
AT.PGN:: 0 ;PAGENUM
BLOCK 10
LONBFA:: BLOCK 10
;INTERRUPT FUNCTIONS
FB.BUF::
IFE SAIL,[
NIL,,NIL ;↑@ ↑A
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
IN0+↑R,,IN0+↑W ;↑R UWRITE ON? ↑S ↑W INT, ↑V MACRO
IN0+↑T,,NIL ;↑T UWRITE OFF? ↑U
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 41, NIL,,NIL ;LOW CONTROL ↑<NULL>-↑A (200-301)
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 5, 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
;;; IFN QIO
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 4
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
BLOCK 5
LONBFA::
OFFSET 0
] ;END OF IFN QIO
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 ONEXACT VALUE)
;;; - THIS IS FOR THE NOINTERRUPT FUNCTION
SWS::
IFE QIO,[
INT: 0
IPCLOK: 0 ;PC LOCATION AT TIME OF INTERRUPT
IT$ JRST INT0
INTSV: 0 ;INTERRUPT REGISTER SAVED
RDOBCT: 0 ;STALLMAN'S HAC TO STOP RDIN0 WHILE READING FROM TAPE
] ;END OF IFE QIO
;;; 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) USER INTERRUPTS
ERRSW: -1 ;0 MEANS NO PRINT ON ERROR DURING ERRSET
Q% RRDF: -1 ;LEVEL OF READ: -1=>NONE, 0=>SIMPLE, 1=>RECURSIVE
Q$ 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
.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
RDBKBF: 0 ;OCCASIONALLY, A BREAK CHARA HAS TO BE BUFFERED BACK
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
IFE QIO,[
ERROR3: 0 ;PRINT OUT ERROR MESSAGE
JRST EROR3A
ERROR4: 0 ;PRINT OUT FOR OTHER KINDS OF ERRORS
JRST EROR4A
] ;END OF IFE QIO
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, 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, 0 ;HUNKS
0 ;NO PURE SARS
IFN .-NPFFS-NFF, WARN [NPFF- TABLE WRONG LENGTH]
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, 0 ;HUNKS
0 ;NO PURE SARS
IFN .-EPFFS-NFF, WARN [EPFF- TABLE WRONG LENGTH]
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, MINFFH ;HUNKS
MFFA: MINFFA ;SARS
IFN .-MFFS-NFF, WARN [MFF- TABLE WRONG LENGTH]
;;; 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, 0 ;HUNKS
NFFA: 0 ;SARS
IFN .-NFFS-NFF, WARN [NFF- TABLE WRONG LENGTH]
IFN USELESS*QIO*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*QIO*ITS
GCACSAV: BLOCK NACS+1 ;MARKED ACS SAVED HERE
GCNASV: BLOCK 20-<NACS+1> ;UNMARKED ACS SAVED HERE
Q$ GCP=:GCACSAV+P
Q$ GCFLP=:GCACSAV+FLP
Q$ GCFXP=:GCACSAV+FXP ;TEST GCFXP FOR NON-ZERO TO DECIDE IF
Q$ 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, 0 ;HUNK
ZFFA: 0 ;SARS
IFN .-ZFFS-NFF, WARN [ZFF- TABLE WRONG LENGTH]
.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, 0 ;HUNKS
SSASIZ: NSARSG*SEGSIZ ;SARS
IFN .-SFSSIZ-NFF, WARN [S--SIZ TABLE WRONG LENGTH]
;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, 0 ;HUNKS
OSASIZ: 0 ;SARS
IFN .-OFSSIZ-NFF, WARN [O--SIZ TABLE WRONG LENGTH]
;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, MAXFFH ;HUNKS
GSASIZ: MAXFFA ;SARS
IFN .-GFSSIZ-NFF, WARN [G--SIZ TABLE WRONG LENGTH]
;;; 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, 0 ;HUNKS
SASGLK: 0 ;SARS
IFN .-FSSGLK-NFF, WARN [--SGLK TABLE WRONG LENGTH]
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
IFN LHFLAG, LHSGLK: 0 ;LINKED LIST OF BLOCKS FOR LH HACK
BTBAOB:
10% -<NBITSG*SEGSIZ/BTBSIZ>+NBITB,,BFBTBS←<5-SEGLOG>
10$ -<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, 0 ;HUNKS (YOU GOTTA BE KIDDING!)
0 ;AIN'T NEVER NO PURE SARS NEITHER!
IFN .-PFSSIZ-NFF, WARN [P--SIZ TABLE WRONG LENGTH]
PS2SIZ: NSY2SG*SEGSIZ ;SYMBOL BLOCKS
;;; ********** HAIRY PARAMETERS HACKED BY ALLOC **********
BPSH: ;BINARY PROG SPACE HIGH
10$ 0 ;FILLED IN BY ALLOC
10% <<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, MAXFFH ;HUNKS
XFFA: 0 ;SARS
IFN .-XFFS-NFF, WARN [XFF- TABLE WRONG LENGTH]
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
;;; I GUESS THIS STUFF NEED NOT BE CONSIDERED SACRED
Q% MAYBE LINTAR==NFF+3
Q$ ;SPACE FOR ALL CHANNELS AND INFERIORS AND USELESS INTS AND GC OVERFLOWS
Q$ 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
Q% MAYBE LUNREAR==NFF+3
Q$ ;ENOUGH FOR ALL CHANNELS AND INFERIORS AND USELESS INTS AND GC OVERFLOWS
Q$ MAYBE LUNREAR==20+10*JOBQIO+5*USELESS+NFF
UNRC.G: 0 ;-2/-3 FOR DELAYED ↑X/↑G INTERRUPT
Q$ IFN USELESS, UNRCLI: 0 ;ENTRY FOR DELAYED CLI INTERRUPT
Q$ 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
IFN QIO,[
;;; 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
MXIPDL==4 ;MAX SIMULTANEOUS INTERRUPTS
; (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
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
%PIPAR==:1000,,
%PIWRO==:200,,
;RH BITS
%PIMPV==:20000
%PIILO==:40
] ;END IFN D10+D20
] ;END OF IFN QIO
;;; 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
IFE QIO,[
IT$ UTOBYT: -1 ;# OF VACANT BYTES LEFT IN UTAPE OUTPUT BUFFER
UTOOPD: 0 ;UTAPE OUTPUT OPENED FLAG (NON-ZERO MEANS TRUE)
UTIOPD: 0 ;UTAPE INPUT OPENED FLAG
;FOR ITS, HAS MODE BITS IN LH, 3 SIXBIT CHARS FOR DEVICE IN RH
UTIN: (SIXBIT \DSK\)
BLOCK 4 ;FOR ITS, USED AS DATA BLOCK ON OPENS
UWRT: 0
] ;END OF IFE QIO
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
SYMLO: 0 ;LOW BOUNDARY FOR DDT'S SYMBOL TABLE
Q% UPCOK: -1 ;-1 => TYPING ↑C IS OK. NON-NEG INHIBITS,
; AND CAUSES DELAY OF ↑C INTERRUPTS.
; POS => THERE IS A ↑C REQUEST STACKED UP.
] ;END OF IFN D10
IFE QIO,[
UUN: BLOCK 2 ;UNAME
UFN1: BLOCK 2 ;FN1, LFT BY MOST RECENT UREAD, FASLOAD
UFN2: BLOCK 2
URFN1: BLOCK 2
URFN2: BLOCK 2 ;FN2
SPP: 0 ;PAGE-PAUSE-P PAUSE AT END OF DATAPOINT PAGE IF NON-NIL
SRNLN1: 0 ;SCREEN LENGTH FOR DISPLAY TERMINAL, 0 FOR PRINTING
PAUSFL: 0 ;FLAG TO HANG ON PAUSE FEATURE, -1 TO CONTINUE, +N TO CLEAR SCREEN
STTYSS: 0 ;TTY STATUS WORD
STTYS1: 0 ;TTY INTERRUPT AND WAKEUP CONTROL, FIRST WORD
STTYS2: 0 ; SECOND WORD; MUST FOLLOW FIRST!
TTYDISP: -1 ;TERMINAL TYPE (0 => PRINTING)
LINMODE: SA% NIL ;NON-NIL => LINE BUFFERING MODE (STATUS LINMODE)
SA$ TRUTH
] ;END OF IFE QIO
IFN SAIL*QIO,[
;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*QIO
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 ;BLOCK OF RANDOM CRUD
IFE QIO,[
IFN SAIL,[
ACLKTYP: 0 ;Q$RUNTIME OR QTIME
AINT: 0 ;SAVE A DURING ALARM
ATTSV: 0 ;SAVE TT DURING ALARM
SAINTER: 200,,0 ;NEW STYLE CLOCK INTERRUPT MASK
SAICONT:0 ;CONTINUE POINT FOR INTUUO
SAIALK: 0
SAILJOB: 0
AIPCLOK: 0
0
] ;END OF IFN SAIL
] ;END OF IFE QIO
IFN EDFLAG,[
EDPRFL: 0
EDPRN: EDPRW
EDEX2: 0
] ;END OF IFN EDFLAG
IFN MOBIOF,[
NVSCL: 20,, ;SCALING FOR NVFIX - NORMALLY CONVERTS 0 - 37777 TO 0 1777
FTVO: SIXBIT \ &DSK\ ;FAKE TV STUFF
BLOCK 2
CURBLK: 0 ;NUMBER OF BLOCK STORED IN ARRAY POINTED TO BY BUFFER
BUFFER: 0 ;POINTER TO SAR OF BUFFER ARRAY
NFTVBL: 0 ;CURRENT NUMBER OF BLOCKS IN CORE
MFTVBL: 4 ;MAX ALLOWABLE, BEFORE DELETIONS OF BLOCKS IN CORE OCCURS
XBLOKS: 0
YBLOKS: 0
NBLOKS: 0 ;TOTAL NUMBER OF BLOCKS
XLL: 0 ;X LOWER-LEFT
YLL: 0 ;Y "
XUR: 0 ;X UPPER-RIGHT
YUR: 0 ;Y "
NVDCL: 0 ;DIM CUTOFF LEVL
NVCFL: 0 ;CONFIDENCE LEVEL OF IMAGE
NVDK: 0 ;DIM CUTOFF ON FAKETV
ODCL: 0 ;LAST DIM CUTOFF ON FAKETV
PLTTBP: 0 ;BYTE POINTER FOR PLOTTEXT
PLTTBF: 0 ;BUFFER FOR PLOTTEXT
PLTLST: 0 ;CELL FROM WHICH TO DO A PSTRTL
] ;END OF IFN MOBIOF
IFE QIO,[
IFN ITS, URCHST: BLOCK 6 ;FOR UREAD'S .RCHST (READ CHANNEL STATUS)
POV2: . ;ADDRESSES OF ERROR MESAGE FOR PDLOV
LTYOC: 0 ;NON-ZERO => LAST CHAR OUTPUT BY TYO WAS A SLASH
PBFTY: 0 ;CHARACTER BUFFERED UP IN TTY CHANNEL
IFN ITS, IODF1: SIXBIT \↑M !\ ;TO BE USED WHEN A DEVICE FULL MESSAGE NEEDED
] ;END OF IFE QIO
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
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
IFN <1-QIO>*ITS,[
RD0S3: ASCII \⊂Hλ⊂V\ ;REPOSITION DISPLAY CURSOR
0 ; (↑P H ↑H ↑P V)
] ;END OF IFE QIO
STQLUZ: 0 ;FOR SETQING NIL OR T - REMEMBER WHICH ONE OVER INTWAIT
Q% OLINEL: 0 ;INITIAL SETTING OF LINEL BY TTYOPN (THIS IS AN
; NLISP INUM; HENCE NEEDS NO GC PROTECTION)
NOPFLS: 0 ;NON-ZERO => PURIFY$G SHOULDN'T FLUSH PDLS
SAWSP: -1 ;SCREW-AROUND-WITH-SHARING-P
IFN ITS,[
PURDEV: 0 ;PDUMP FILE DEVICE NAME
PURFN1: 0 ;PDUMP FILE FN1
PURFN2: 0 ;PDUMP FILE FN2
PURSNM: 0 ;PDUMP FILE SNAME
SYSDEV: SIXBIT \SYS\
SYSFN1:
Q% SIXBIT \PURBIB\
Q$ SIXBIT \PURQIO\
SYSFN2: LVRNO
SYSSNM: SIXBIT \SYS\
] ;IFN ITS
SUBTTL KILHGH AND GETHGH
IFN D10*HISEGMENT,[
IFE SAIL,[
KILHG2: MOVEI A,KILHG3 ;THIS SHOULD BE START ADR IF NOT KILLING HS
HRRM A,.JBSA
MOVE 0,SGANAM ;PICK UP 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,[
SKIPE SGANAM ;CAN'T FLUSH HIGH SEGMENT IF WE
SKIPN SGADEV ; DON'T KNOW WHEREFROM TO RETRIEVE IT
JRST KILHG2
MOVSI A,1
CORE A, ;FLUSH HIGH SEGMENT
JFCL
KILHG1:
] ;END OF IFE SAIL
IFN SAIL,[
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
GETHGH:
IFE SAIL,[
MOVEI A,A+1 ;SET UP TO GET HIGH SEG BACK
MOVE A+1,SGADEV
MOVE A+2,SGANAM
SETZB A+3,A+4
MOVE A+5,SGAPPN
SKIPE SGANAM
SKIPN SGADEV
JRST GETHG1
GETSEG A, ;GET HIGH SEGMENT
JRST GLSLUA
GETHG1:
] ;END OF IFE SAIL
IFN SAIL,[
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
TDO 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,400000 ;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
JSP F,JCLSET ;GOBBLE DOWN ANY JCL
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
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,400000-1
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!
\]
EXIT
] ;END OF IFN D10*HISEGMENT
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), AND PURTBL
;;; 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)
;;; 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
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,$]
ZZX==0
IRPS SPC,,[SPCS]
ZZX==ZZX+N!SPC!SG
TERMIN
REPEAT ZZX/SGS%PG,[
BITS
ZZZ==ZZZ+1
IFE ZZZ&17,[
0
0
]
PRINTX \BITS\
IFE <ZZZ#10>&17, PRINTX \ \
IFE <ZZZ#20>&37, PRINTX \ \
IFE ZZZ&37,[
PRINTX \
\
]
] ;END OF REPEAT
TERMIN
.BYTE
IFN ZZZ-NPAGS,[
WARN \ZZZ,[=WRONG LENGTH FOR PURTBL (SHOULD BE ]\NPAGS,[)]
LOC ZZW
] ;END OF IFN ZZZ-NPAGS
PRINTX \
\
] ;END IF 2
FLSTBL:
IF1, BLOCK <<777777←-SEGLOG>+1>/36.
IF2,[
.BYTE 1
IRP SPCS,,[ZER+LBT,ST,SYS,SAR+VC,XVC,IS2+SYM+XXA,XXZ,SY2+PFX+PFS+PFL+XXP
IFS+IFX+IFL+BN+XXB,HBT,BPS,NXM,FXP,XFXP,FLP,XFLP,P,XP
SP,XSP,SCR]BITS,,[1,1,2,1,0,1,0,2,1,1,$,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
SUBTTL OLD I/O BUFFERS, PATCH AREAS
IFE QIO,[
DEFINE OPNWRD A,B,E
O!A!C: IFSE E,, (B+SIXBIT \A\)
IFSN E,, (B+SIXBIT \E\)
A!OPD: 0
TERMIN
OPNWRD LPT,1
IFN MOBIOF,[
OPNWRD IPL,5
OPNWRD NVD,0
OPNWRD BVD,2,NVD
OPNWRD IMX,0
OPNWRD OMX,1
OPNWRD DIS,1
SIXOPD: 0 ;-1 FOR 6, +1 FOR 10 SLAVE
] ;END OF IFN MOBIOF
] ;END OF IFE QIO
CONSTANTS
;;; NO MORE CONSTANTS PERMITTED AFTER THIS IN THE LOSEG (WRITEABLE FIRST PAGE)
IFE QIO,[
IFE D10,[
UTBSIZ==20
ZZ==.
SEGUP .
IFL .-ZZ-2*UTBSIZ-5,[
SEGUP .+1
UTBSIZ==<.-ZZ-6>/2
] ;END OF IFL
LOC ZZ
UTIBP: 440700,,UTIB+UTBSIZ
UTIB: BLOCK UTBSIZ+1
UTOBP: 440700,,UTOB
UTOB: BLOCK UTBSIZ+1
SEGUP .
] ;END OF IFE D10
IFN D10,[
UTBSIZ==NIOBFS*203-3 ;PURE RANDOMNESS
UTIHED: 0 ;BUFFER HEADER FOR DEC-10 UREAD INPUT
UTIBP: 0
UTIBYT: 0
UTOHED: 0 ;BUFFER HEADER FOR DEC-10 UREAD OUTPUT
UTOBP: 0
UTOBYT: 0
FSLHED: BLOCK 3 ;FOR FASLOAD BUFFER, ETC.
BLOCK 3 ;ROOM FOR FOOLISH HEADER
UTIB: BLOCK UTBSIZ+1
BLOCK 3 ;ROOM FOR FOOLISH HEADER
UTOB: BLOCK UTBSIZ+1
PATCH: BLOCK PTCSIZ
SEGUP .
EPATCH==.-1
LOPATCH==1
] ;END OF IFN D10
] ;END OF IFE QIO
10% LOPATCH==0
Q$ 10$ LOPATCH==0
IT$ Q% INFORM [UTAPE BUFFER AREAS=],\UTBSIZ,[ WORDS APIECE]
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
] ;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)]
10$ 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
$GCST SCR,,,0
.HKILL GS.ZER
IFN GCST+NSEGS-., WARN \.-GCST,[=WRONG GC SEGMENT TABLE LENGTH (SHOULD BE ]\NSEGS,[)]
] ;END IF2
] ;END OF IFN PAGING
PAGEUP
SPCTOP ST,,[SEGMENT TABLE]
10$ $HISEG
10$ HILOC==. ;ORIGIN OF HIGH SEGMENT
10% SPCBOT SYS
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
$INSRT ERROR ;ERROR MSGS AND HANDLERS
;;; ERROR FILE HAS DEFINITION FOR BEGFUN
PGTOP ERR,[ERROR HANDLERS AND MESSAGES]
PGBOT TOP
;;; LISPGO HAS BEEN MOVED SO IT WILL STAY IN CORE WHEN PURE PAGES ARE FLUSHED
;;; AT SUSPEND TIME AS CONTROLLED BY THE SUSFLS FLAG.
SUBTTL BASIC TOP LEVEL LOOP
;;; (DEFUN STANDARD-TOP-LEVEL ()
;;; (PROG (↑Q ↑W ↑R EVALHOOK BASE IBASE ...)
;;; ERROR ;ERRORS, UNCAUGHT THROWS, ETC. COME HERE
;;; ↑G ;↑G QUITS COME HERE
;;; (RESET-BOUND-VARIABLES-AND-RESTORE-PDLS)
;;; (SETQ ↑Q NIL)
;;; (SETQ ↑W NIL)
;;; (SETQ EVALHOOK NIL)
;;; (NOINTERRUPT NIL)
;;; (DO-DELAYED-TTY-AND-ALARMCLOCK-INTERRUPTS)
;;; ;RECALL THAT ERRORS DO (SETQ // ERRLIST)
;;; (MAPC (FUNCTION EVAL) //)
;;; (OR (TOP-LEVEL-LINMODE) (TERPRI))
;;; (DO ((PRT '* *))
;;; (NIL) ;DO FOREVER (UNTIL ERROR OR ↑G QUIT)
;;; (SETQ * (COND ((STATUS TOPLEVEL)
;;; (EVAL (STATUS TOPLEVEL)))
;;; (T (TOP-LEVEL-PRINT PRT)
;;; (TOP-LEVEL-TERPRI)
;;; (TOP-LEVEL-EVAL (TOP-LEVEL-READ))))))))
LSPRET: PUSHJ FXP,ERRPOP
MOVE P,C2 ;RETURN TO TOP LEVEL BY ERR, THROW, AND ERRORS
LSPRT1: JSP T,TLVRSS ;RETURN TO TOP BY ↑G
JSP A,ERINIT
Q$ SETZ A, ;FOR QIO, 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
Q$ HRRZ F,VINFILE ;ONLY PRINT FIRST ASTERISK IF NO INIT FILE
Q$ AOSN TOPAST ;IS THIS THE FIRST TIME?
Q$ CAIE F,INIIFA
Q$ SKIPA ;NOT (INIT-FILE AND FIRST-TIME)
Q$ JRST LISP2B
PUSH P,[Q.]
Q% SKIPN LINMODE
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
IFN QIO,[
;;; (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,
] ;END OF IFN QIO
;;; (DEFUN TOP-LEVEL-TERPRI ()
;;; ((LAMBDA (IFILE)
;;; (AND (TTYP FILE)
;;; (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:
IFE QIO, JRST TERPRI
IFN QIO,[
PUSHJ P,STDIFL ;GET STANDARD INPUT FILE
MOVE F,TTSAR(A)
TLNN F,TTS.TY
POPJ P,
MOVEI TT,FT.CNS
MOVE AR1,@TTSAR(A)
;TOP-LEVEL-TERPRI-X; TTYCONS IN AR1, FBT.LN IN F
TLTERX: JUMPE AR1,CPOPJ ;EXIT IF NO TTYCONS FILE
CAME AR1,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
] ;END OF IFN QIO
;;; (DEFUN TOP-LEVEL-READ ()
;;; (DO ((EOF (LIST 'TLRED1)) (IFILE) (FORM))
;;; (NIL) ;DO UNTIL RETURN
;;; (SETQ IFILE (STANDARD-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 ((NOT (TTYP IFILE)) (TERPRI T))
;;; (T (TOP-LEVEL-TERPRI-X NIL (STATUS TTYCONS IFILE))))))
TLREAD:
IFE QIO, PUSHJ P,IREAD
IFN QIO,[
PUSHJ P,STDIFL ;GET STANDARD INPUT FILE AS OF
PUSH P,A ; *BEFORE* THE READ, AND SAVE IT
REPEAT 2, PUSH P,[TLRED1] ;ONCE FOR RANDOM EOF VALUE
MOVNI T,1
JRST IREAD1 ;READ THE FORM (POSSIBLY USING USER'S READ)
TLRED1: POP P,B
CAIE A,TLRED1
JRST SPCFLS
MOVE TT,TTSAR(B) ;SIMPLY TERPRI ON EOF IF APPROPRIATE
TLNE TT,TTS.TY
JRST TLRED2
SETZ AR1,
PUSHJ P,TERP1
JRST TLREAD
TLRED2: HRRI TT,FT.CNS
MOVEI AR1,NIL
MOVE AR1,@TTSAR(B)
SETZ F,
PUSHJ P,TLTERX
JRST TLREAD
] ;END OF IFN QIO
SPCFLS: SKIPE VOREAD
POPJ P,
PUSH P,A
PUSHJ P,ATOM
JUMPE A,POPAJ
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 TOP-LEVEL-EVAL (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 + -))))
TLEVAL: SKIPE B,VTLEVAL ;IF USER FUNCTIONS
CALLF 1,(B) ;CALL IT AND EVAL RESULTS
MOVEM A,VIDIFFERENCE ;THE SYMBOL - GETS THE TYPED-IN
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)!\]
IFN QIO,[
;;; (DEFUN TOP-LEVEL-LINMODE ()
;;; ((LAMBDA (IFILE)
;;; (AND (TTYP IFILE)
;;; (STATUS LINMODE IFILE)))
;;; (STANDARD-IFILE)))
;;; SKIP IF INPUT FILE 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
MOVEI TT,F.MODE
MOVE T,@TTSAR(C)
TLNN T,FBT.LN ;ONLY A TTY CAN HAVE LINMODE SET
JRST (F) ;TYPICALLY RETURN TO AN ITERPRI
JRST 1(F) ; OR SKIP OVER IT
] ;END OF IFN QIO
;;; (DEFUN TOP-LEVEL-PRINT (PRT)
;;; (OR (AND (TOP-LEVEL-LINMODE)
;;; (EQ (STATUS TTYCONS (STANDARD-IFILE)) TYO))
;;; (TERPRI))
;;; (COND (PRIN1 (FUNCALL PRIN1 PRT)) (T (PRIN1 PRT)))
;;; (TYO 40))
TLPRINT:
SKIPE C,VTLPRINT ;IF USER SPECIFIED FUNCTION
CALLF 1,(C) ;THEN INVOKE IT AND PRINT WHAT IT RETURNS
PUSH P,A ;TOP-LEVEL PRINT
Q% SKIPN LINMOD
Q% PUSHJ P,ITERPRI
IFN QIO,[
JSP F,LINMDP ;LEAVES INPUT FILE IN C
JRST TLPR1
MOVE T,TTSAR(C) ;PICK UP THE TTSAR
MOVEI TT,FT.CNS
HRRZ C,@T ;PICK UP FT.CNS
TLNE T,TTS.TY
CAME C,V%TYO
TLPR1: PUSHJ P,ITERPRI
] ;END OF IFN QIO
MOVE A,(P)
PUSHJ P,IPRIN1
MOVEI A,40
PUSHJ P,TYO
JRST POPAJ
IPRIN1:
Q% SKIPN VPRIN1
Q$ SKIPN V%PR1
JRST PRIN1
Q% JCALLF 1,@VPRIN1
Q$ JCALLF 1,@V%PR1
;;; TOP LEVEL VARIABLE SETTINGS
TLVRSS: MOVE A,[PNBUF,,PNBUF+1]
SETZM PNBUF
BLT A,PNBUF+LPNBUF-1
TLVRS1: PUSH P,EOFRTN
Q% MOVE A,[INTSV,,INTSV+1]
Q% SETZM INTSV
Q$ MOVE A,[ERRTN,,ERRTN+1]
Q$ SETZM ERRTN
BLT A,ERRTN+LEP1-1
SETOM ERRSW
Q% SETOM RRDF
;Q$ SETZM BFPRDP
POP P,EOFRTN
SETZB NIL,PANICP
SETZB A,PSYMF
SETZB B,EXPL5
SETZB C,PA3
Q% SETZB AR1,MKNM3
Q$ 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:
IFN QIO,[
;DISABLE INTERRUPT SYSTEM
IT$ .SUSET [.SPICLR,,R70]
10$ SA% MOVE P,C2
10$ SA% MOVE FXP,FXC2
IFN D10+D20, PUSHJ P,DALINT ;DISABLE ALL INTERRUPTS
] ;END OF IFN QIO
ERINIX: ;ENTER HERE IF INTERRUPTS ALREADY DISABLED
IFE PAGING,[
MOVE P,C2 ;SET UP PDL POINTERS
MOVE FXP,FXC2
MOVE FLP,FLC2
MOVE SP,SC2
] ;END OF IFE PAGING
IFN PAGING,[
Q% PIOF
MOVE T,PDLFL1 ;CONTAINS <- # OF PDL PAGES,,# OF 1ST PDL PAGE>
20$ WARN [WHAT GOES HERE FOR TWENEX??]
IT$ .CALL PDLFLS ;FLUSH ALL PDL PAGES
IT$ .VALUE
MOVE T,[$NXM,,QRANDOM]
MOVE TT,PDLFL2 ;CONTAINS <- # OF PDL SEGS,,# OF 1ST PDL SEG>
MOVEM T,ST(TT) ;UPDATE SEGMENT TABLE TO REFLECT
AOBJN TT,.-1 ; LOSS OF PDL PAGES
HRRZ T,PDLFL1
ROT T,-4
ADDI T,(T)
ROT T,-1
TLC T,770000
ADD T,[450200,,PURTBL]
SETZ D,
HLRE TT,PDLFL1
ERINI8: TLNN T,730000
TLZ T,770000
IDPB D,T
AOJL TT,ERINI8
Q% MOVEI AR2A,(A)
IRP Z,,[P,FLP,FXP,SP]
Q% MOVEI A,Z
Q$ MOVEI F,Z
MOVE Z,C2-P+Z ;CAUSE ONE PDL PAGE
MOVEI D,1(Z) ; FOR Z TO EXIST
ANDI D,PAGMSK
JSR PDLSTH .SEE PDLST0
TERMIN
Q% MOVEI A,(AR2A)
ERIN8G: MOVE T,[XPDL,,ZPDL]
BLT T,ZSPDL
] ;END OF IFN PAGING
ERINI0: SETZB NIL,TAPRED ;INITIALIZATION AFTER PDL SETUP
SETZM NOQUIT
SETZM FASLP
IFN USELESS, SETZM TYOSW
SETZM INTFLG
SETZM INTAR
SETZM VEVALHOOK
Q% SETZM TYIMAN
Q% SETZM TMBBC
Q% SETZM RDTYBF
IFN QIO,[
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,UNTYI
MOVEM T,UNTYIMAN
;; MOVEI T,READP
;; MOVEM T,READPMAN
;; MOVEI T,UNRD
;; MOVEM T,UNREADMAN
] ;END OF IFN QIO
;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
Q% SETOM RRDF
SETOM ERRSW
MOVSI B,-NSFC
ERINI3: MOVE C,SFXTBI(B) ;RESTORE CLOBBERED LOCATIONS
MOVEM C,@SFXTBL(B)
AOBJN B,ERINI3
Q% SETZM WAITFL ;IS EVERYBODY HAPPY?
TLZ A,-1
;ENABLE THE INTERRUPT SYSTEM
IFE QIO,[
IFN ITS,[
.SUSET [.SMASK,,IMASK] ;SET INTERRUPT MASK
.SUSET [.SDF1,,R70] ;RESET DEFER WORDS
.SUSET [.SDF2,,R70]
] ;END OF IFN ITS
IFN D10,[
MOVEI TT,INT0
MOVEM TT,.JBAPR
MOVEI TT,630000
APRENB TT,
MOVEI T,TTYINT ;REENTER COMMAND WILL START US
MOVEM T,.JBREN ; AT TTYINT (TO READ INTERRUPT CHAR)
SETOM UPCOK ;ENABLE SUCH "INTERRUPTS"
] ;END OF IFN D10
PION
] ;END OF IFE QIO
IFN QIO,[
IFN ITS,[
.SUSET [.SMASK,,IMASK] ;RESTORE INTERRUPT ENABLE MASKS
.SUSET [.SMSK2,,IMASK2]
.SUSET [.SDF1,,R70] ;RESET DEFER WORDS
.SUSET [.SDF2,,R70]
.SUSET [.SPICLR,,XC-1] ;ENABLE INTERRUPT SYSTEM
] ;END OF IFN ITS
IFN D10+D20, PUSHJ P,REAINT ;RE-ENABLE THE INTERRUPT SYSTEM
] ;END OF IFN QIO
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
SPEC4: EXCH R,@(T)
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
SETZ TT, ;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)
IFE FUNAFL, JRST UBD
IFN FUNAFL,[
JRST UBD4
SKIPN D
.LOSE ;SOMEBODY SCREWED THE SPECPDL - HELP!!!
] ;END OF IFN FUNAFL
UBD3: HRRZM R,(D)
UBD1: JRST UBD
IFN FUNAFL,[
UBD4: HLRZ D,(SP)
JUMPN D,UBD ;AMONG OTHER THINGS, ERRPOP'S SETOM MAKES THIS JUMP
PUSH FXP,T ;MUST SAVE T
MOVEI T,(R)
PUSHJ P,AUNBN0 ;FOUND A FUNARG BINDING BLOCK
POP FXP,T ; - USE SPECIAL ROUTINE TO UNBIND IT
JRST UBD
] ;END OF IFN FUNAFL
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
UNBND1: CAIN T,(SP)
JRST UNBND2
POP SP,TT
MOVSS TT
HLRZM TT,(TT)
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)
STQPUR: 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
IFN D10,[
MAKVC3: PUSHJ P,CONS1
SETOM ETVCFLSP
JRST MAKVC1
] ;END OF IFN D10
SUBTTL VARIOUS ODDBALL CONSERS
IFN BIGNUM,[
C1CONS: EXCH T,YAGDBT
JSP T,FWCONS
EXCH T,YAGDBT ;FALL INTO ACONS
] ;END OF IFN BIGNUM
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
MOVSI TT,(SIXBIT \@\)
MOVEM TT,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:
IFN CMU,[
HLRZ T,(FXP)
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
POPI FXP,1 ;ON SUCCESS, FLUSH WORD FROM PDL
JRST PNBFAT ; AND CONS UP ATOM FROM STRING
PPNAT2:
] ;END OF IFN CMU
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:
IFN TOPS10+CMU,[
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 IFN TOPS10+CMU
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
THROW7: EXCH A,B
%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,MEMQ ;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,MEMQ ;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
THROW4: JUMPN B,THROW7 ;NO CATCH FRAME -- GIVE UGT EROR
JRST LSPRET ;IF NO THROW TAG, THROW TO TOP LEVEL
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
Q% MOVEI A,ERSTBK
Q$ 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
Q% LPTON ; ↑B
IFN MOBIOF, DISPON ; ↑F
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
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 $TYI
PUSH P,FLP
PUSH P,FXP
REPEAT LEP1, PUSH P,ERRTN+.RPCNT
LERSTP==.-ERSTP ;LENGTH OF ERRSET PUSH
JRST (T)
ERUN0: HRRZ TT,ERRTN ;GENERAL BREAK OUT OF AN ERRSET
SKIPE D,UIRTN
CAIL TT,(D)
JRST ERR1A
JSP TT,UIBRK ;MAYBE BREAK UP A USER INTERRUPT FIRST
JRST ERUN0
ERR1A: HRRZ TT,ERRTN ;WHERE WE ARE UNWINDING TO
PUSHJ FXP,UNWPRO ;HANDLE UNWIND-PROTECT
MOVE P,ERRTN
ERR1: SETZM PANICP
MOVSI D,-LEP1+1(P)
HRRI D,ERRTN
BLT D,ERRTN+LEP1-1
SUB P,EPC1
POP P,FXP
POP P,FLP
POP P,TT
POP P,PA3
JRST UBD0 ;RESTORE CONDITIONS AND PROCEED
EPC1: LEP1,,LEP1
UIBRK: EXCH D,TT ;UNWIND-PROTECT NEEDS STACK POINTER IN AC TT
PUSHJ FXP,UNWPRO ;HANDLE UNWIND PROTECTION
EXCH D,TT
Q% HRRM TT,-2(D) ;BREAK OUT OF A USER INTERRUPT
Q$ 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
Q% HRROI P,-LUINF-1(D) ; DO THE REST OF THE WORK!
Q$ HRROI P,-UIFRM(D)
IFE QIO,[ .SEE FRETURN
MOVEM F,-LSWS(FXP) ;LET F BE SECURE OVER THE RESTORATION
MOVEM T,-LSWS-4(FXP) ;T TOO
MOVEM C,-3(P) ;C TOO
MOVEM B,-4(P) ;B TOO
MOVEM A,LUINF(P) ;A TOO
] ;END OF IFE QIO
IFN QIO,[
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
] ;END OF IFN QIO
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
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
;;; PUSH NOTE
.SEE UNWPUS
PUSH FXP,UNREAL ;FROM THIS POINT ON ALLOW NO USER INT'S
;;;
SETOM UNREAL
LOCKI
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
UNLOCKI
;;; PUSH NOTE
.SEE UNWPUS
PUSHJ P,SAVX5 ;AND UNPROTECTED ONES
;;;
HRRI T,(D)
MOVEI TT,(R)
PUSHJ P,UBD0 ;UNWIND SP
MOVEI TT,(T)
TLNN T,CATCOM ;COMPILED CODE?
JRST UNWNCM ;NOPE, USE PROGN
UNWPUS==:13 ;NUMBER OF PUSHES DONE ON FXP
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
PUSHJ P,(B) ;INVOKE THE UNWINDPROTECTION CODE
SKIPA
UNWNCM: PUSHJ P,IPROGN
PUSHJ P,RSTX5 ;RESTORE ACS
PUSHJ FXP,RST5
POP FXP,UNREAL ;RESTORE OLD STATE OF UNREAL
PUSHJ P,CHECKI ;AND SEE IF INTERRUPTS TO BE RUN
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
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: MOVEI A,TRUTH ;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
;;; FORMAT OF APPLYFRAME:
;;; -- ARGS --
;;; <FLP>,,<FXP>
;;; <SP>,,<FUNCTION>
;;; $APPLYFRAME
;;; 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
REPEAT HNKLOG, 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
REPEAT HNKLOG, 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
REPEAT HNKLOG, 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
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)
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
;;; 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,
IFN QIO,[
;;; 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: MOVEI AR2A,READTABLE ;ON ERROR, RESTORE TO STANDARD READTABLE
EXCH AR2A,VREADTABLE
EXCH AR2A,A
PUSHJ P,GTRDT9 ;GIVE OUT A FAIL-ACT
MOVEI A,(AR2A)
JRST GTRDTB ;TRY AGAIN IF LOSER RETURNS TO US
] ;END OF IFN QIO
SUBTTL NOINTERRUPT FUNCTION
NOINTERRUPT: JUMPE A,CHECKU ;SUBR 1 - ENABLE/DISABLE
CAIN A,QTTY
Q% JRST CHECKA
Q$ 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.
CHECKU: SKIPN UNREAL ;NONE CAN BE PENDING IF NOT DELAYING
Q% POPJ P,
Q$ JRST NOINT0
CHECKQ:
Q$ 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
Q% MOVE A,UNREAR(F)
Q$ MOVE D,UNREAR(F)
Q$ TRNE D,400000 ;IF (NOINTERRUPT 'TTY), SUPPRESS
Q$ SKIPN (P) ; TTY INTERRUPTS AT THIS TIME
PUSHJ P,YESINT ;FOR QIO, MAY CLOBBER R (SEE UISTAK)
JRST NOINT1
NOINT4: SKIPG A,UNREAL
MOVEI A,TRUTH
Q% SETZM UNREAL
Q$ POP P,UNREAL
JRST UINTEX
IFE QIO,[
CHECKA: SKIPL UNREAL
JRST NOINT0
CHECKZ: PUSHJ P,UINTPU
PUSHJ P,NOINTA
JRST .-1
MOVEI A,QTTY
MOVEM A,UNREAL
MOVEI A,TRUTH
JRST UINTEX
] ;END OF IFE QIO
;;; 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:
Q% SKIPN A,UNRRUN ;PROCESS RUNTIME ALARMCLOCK FIRST
Q$ SKIPN D,UNRRUN
JRST NOINT2
SETZM UNRRUN
PUSHJ P,YESINT
POPJ P,
NOINT2:
Q% SKIPN A,UNRTIM ;NOW THE REAL TIME ALARMCLOCK
Q$ 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
%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]
%C!X!R
TERMIN
;;; 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 ;***** LOSS! GO AWAY WHEN COMPILER IS SMARTER.
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: TRNE T,1 ;SKIP IF CAR OPERATION
SKIPA D,(D)
HLRZ D,(D)
ROT T,-1
TRNE T,776 ;SKIP IF ALL DONE
JRST CR2
CR7: MOVEI A,(D)
JRST RSTX3 ;***** LOSS! GO AWAY WHEN COMPILER IS SMARTER
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 ALA LISP MACHINE. IF *RSET IS OFF TRY TO DO FAST
;;; HACKING USING %C*R ROUTINES
; RETURNS THE NTH CAR [WHERE (NTH 0 FOO) IS (CAR FOO)]
; EQUIVALENT TO (CAR (NTHCDR N FOO))
NTH: PUSHJ P,NTHCDR ;DO AN NTHCDR
SKIPE V.RSET ;EXTRA CHECKING DESIRED?
JRST CRSUBRS ;YES, BE SLOW
HLRZ A,(A) ;RETURN THE CAR OF THE RESULT
POPJ P,
; NTHCDR N FOO RETURNS THE RESULT OF 'N' CDR'S
NTHIEN: WTA [IS ILLEGAL ELEMENT NUMBER - NTH/NTHCDR!]
NTHCDR: MOVE R,(A) ;GET ELEMENT NUMBER
JUMPL R,NTHIEN ;MUST BE NON-NEGATIVE
MOVEI A,(B) ;RESULT TO BE RETURNED IN A
SKIPE V.RSET ;USE SLOW LOOP?
JRST NTHSLW ;YES, DO ERROR CHECK ON EACH ELEMENT
JUMPE R,CPOPJ ;RETURN IF NOTHING TO DO
NTHCD1: HRRZ A,(A) ;DO A CDR
SOJG R,NTHCD1 ;LOOP UNTIL APPROPRIATE NUMBER OF CDR'S DONE
POPJ P, ;THEN RETURN
;SLOWER, ERROR CHECKING LOOP
NTHSLW: SOJL R,CPOPJ ;RETURN WHEN DONE
NTHSL2: JUMPE A,CPOPJ ;IF EVER GETS TO BE NIL RESULT IS NIL
SKOTT A,LS ;A MUST BE A LIST
JRST NTHNAL
HRRZ A,(A) ;CDR A
JRST NTHSLW ;AND DO IT SOME MORE....
NTHNAL: WTA [NON-LIST - NTH/NTHCDR!]
JRST NTHSL2
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.
NCONS: TRZA B,-1 ;(NCONS A) = (CONS A NIL)
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
$CONS: AOJG T,$CONS9 ;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.
%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,[
%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: EXCH A,C ;SUBR 3
JSP T,PDLNMK ;SIGH - MUST PDLNMK THE DATUM
EXCH A,C
JSP T,FXNV1
SKIPE V.RSET
JSP F,CXR3 ;CHECK ARGS
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
WTA [INVALID OR WRONG LENGTH HUNK!]
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,4
2DIF [LSH D,(T)]0,QHUNK1
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)
;;; 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)
;;; HUNK3 AND HUNK4 ROUTINES FOR COMPILED CODE.
;;; THESE ALLOCATE HUNKS OF SIZE 3 AND 4 SUPER-QUICKLY.
;;; ARGUMENTS IN A, B, C, AR1, GUARANTEED NOT TO BE PDL QUANTITIES.
%HUNK3: EXCH C,AR1 ;HUNK3 IS JUST HUNK4, WITH ONE UNUSED COMPONENT,
TROA C,-1 ; BUT UNFORTUNATELY MUST SHUFFLE ARGS
%HNK4A: PUSHJ P,AGC
BAKPRO
%HUNK4: HRRZS FFH ;HUNK4 IS THE IMPORTANT CASE
SKIPN FFH
JRST %HNK4A
EXCH A,@FFH
XCTPRO
EXCH A,FFH
MOVSS (A)
HRRZM B,1(A)
HRLM C,1(A)
HRRM AR1,(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 ;RANDOM CONSES ARE OF SIZE 2
TLNN T,HNK
POPJ P,
MOVEI D,1
2DIF [LSHC TT,(T)]0,QHUNK1-1
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
.VALUE
HUNKP: LSH A,-SEGLOG ;SUBR 1
SKIPGE A,ST(A)
TLNN A,HNK
JRST FALSE
JRST TRUE
;;; HUNKN IS THE CONSER FOR HUNKS OF SIZE 2↑N WORDS.
REPEAT HNKLOG,[
SPECPRO INTZAX
CONC HUNK,\.RPCNT+1,: ;VARIOUS HUNK CONSERS
HRRZS FFH+.RPCNT ;FLUSH SIGN BIT - NEED A HUNK NOW
SKIPN A,FFH+.RPCNT
JSP A,AGC4
MOVE TT,(A)
XCTPRO
MOVEM TT,FFH+.RPCNT
REPEAT 2←.RPCNT, SETOM .RPCNT(A) ;MUST FILL OUT COMPONENTS
NOPRO ; WITH THE "UNUSED" POINTER
POPJ P,
] ;END OF REPEAT HNKLOG
;;; IFN HNKLOG
XHUNK0: WTA [BAD ARGUMENT TO MAKHUNK!]
MAKHUNK: SKOTT A,FX ;SUBR 1
JRST XHUNK5
SKIPGE TT,(A)
JRST XHUNK0
CAILE TT,2←HNKLOG ;CREATE HUNK WITH N COMPONENTS
JRST XHUNK0 ; INITIALIZED TO NIL
SOJL TT,FALSE
MOVEI T,1(TT)
PUSHJ P,XHUNK1
LSHC T,-1
JUMPE T,XHUNK6 ;BEWARE IF 1 OR 0 ELEMENTS
HRLOI T,-1(T) ;SEE HAKMEM FOR THIS EQVI HAK
EQVI T,(A)
SETZM (T)
AOBJN T,.-1
XHUNK6: SKIPGE TT
HLLZS (T)
POPJ P,
XHUNK1: JFFO TT,XHUNK2 ;SELECT CONSER FOR CORRECT SIZE HUNK
JRA A,ACONS
XHUNK2: JRST .+1-43+HNKLOG(D)
IRP X,,[1024,512,256,128,64,32,16,8,4]Y,,[9,8,7,6,5,4,3,2,1]
IFG Y-HNKLOG, .STOP
JRST HUNK!Y ;2↑<Y+1> THINGS
TERMIN
JRA A,ACONS ;2 THINGS - USE CONS
XHUNK5: JUMPGE TT,XHUNK0 .SEE LS
JSP TT,AP2 ;STACK LIST ON PDL, -COUNT IN T
HUNK: AOJG T,FALSE ;LSUBR
PUSH FXP,T ;WE MUST PDLNMK ALL THE ARGUMENTS!
MOVEI D,(P)
ADDI D,(T)
HRLI D,-1(T)
HUNK53: SKIPE A,(D) ;MIGHT LL BE CLEVER ABOUT NIL - IT'S CHEAP
JSP T,PDLNMK
MOVEM A,(D)
AOBJN D,HUNK53
POP FXP,T ;ALL DONE PDLNMK'ING
JUMPE T,POPNCONS
MOVNS TT,T ;CREATE HUNK BIG ENOUGH TO
MOVEI D,QHUNK ; HOLD ALL GIVEN ARGUMENTS,
CAIL TT,2←HNKLOG ; AND INSTALL THEM
JRST XHUNK7
JSP AR2A,HUNKF0
POPJ P,
XHUNK7: MOVNS T
SOJA T,WNALOSE
POPNCONS: POP P,A
JRST ACONS
HUNKF0: PUSHJ P,XHUNK1 ;CREATE A FRESH HUNK, AND INSTALL ARGS FROM PDL
POP P,B ;ALSO USED BY FASLOAD
HRRM B,(A) ;LAST ONE GOES IN ELEMENT 0
LSHC T,-1 ;SAVES C
MOVEI D,(A) .SEE LDLHNK
ADDI D,(T) ;NO ARGUMENT MAY BE A PDL QUANTITY
JUMPGE TT,HUNKF3
HUNKF2: POP P,B ;LOOP TO INSTALL ARGS IN HUNK
HRLM B,(D)
HUNKF3: SOJL T,(AR2A)
POP P,B
HRRM B,(D)
SOJA D,HUNKF2
] ;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
MOVEI A,TRUTH
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)
SASSQ: SKIPA AR1,ASSQ
SASSOC: MOVEI AR1,SAS2
PUSH P,C
PUSHJ P,(AR1)
CALLF 0,@(P)
JRST POP1J
SAS2: MOVE AR1,B ;CHECK TO SEE WHETHER ASSOC CAN BE CONVERTED
JSP T,LATOM ;INTO AN ASSQ
JRST SAS3A
SAS0: SKIPE V.RSET
JSP T,SAS4
SAS1: JUMPE B,CPOPJ ;ASSOC USING AN EQ TEST, I.E. ASSQ
MOVS T,(B) ;MUST PRESERVE AR2A - SEE FASLAP
HLRZ TT,(T)
CAIN A,(TT)
JRST SAS1A
SAS1C: HLRZ B,T
JRST SAS1
SAS1A: HRRZ A,T
JUMPE A,SAS1C
SAS1B: POP P,T
JRST 1(T)
SAS3A: SKIPE V.RSET
JSP T,SAS4
SKIPA C,A
SAS3: HRRZ AR1,(AR1) ;THE FULL ASSOC THING USING EQUAL
JUMPE AR1,CPOPJ ;SAVE R - SEE SSGCPRO
MOVE A,C
HLRZ B,(AR1)
JUMPE B,SAS3
HLRZ B,(B)
PUSHJ P,EQUAL
JUMPE A,SAS3
HLRZ A,(AR1)
JRST SAS1B
ASSOC: SKIPA T,SASSOC
ASSQ: MOVEI T,SAS0 ;** NOTE - MUST NOT USE OTHER THAN A, B, TT
PUSHJ P,(T) ;** BECAUSE OF ASSQ'S FOR READ CHAR MACROS
FALSE: MOVEI A,0
POPJ P,
SAS4: JUMPE B,(T)
SKOTT B,LS
JRST SASERR
HLRZ TT,(B)
JUMPE TT,(T)
SKOTT TT,LS+SY
JRST SASERR
JRST (T)
SUBTTL GET, GETL, PUTPROP, REMPROP FUNCTIONS
GET: SKOTT A,LS+SY
JRST GET3
CAIN B,QVALUE ;CROCK CROCK CROCK!!!!!
TLNN TT,SY
JRST GET1
JUMPE A,BOUND1
HLRZ B,(A) ;MORE CROCK MORE CROCK MORE CROCK!!!!!!
HRRZ A,(B) ; (BUT LAP DEPENDS ON IT...)
CAIN A,SUNBOUND
SETZ A,
POPJ P,
BOUND1: MOVEI A,VNIL
POPJ P,
GET3: JUMPN A,FALSE
MOVEI A,NILPROPS
CAIE B,QVALUE
JRST GET1
MOVEI A,VNIL
POPJ P,
GET0: HRRZ A,(TT) ;USES ONLY A,B,TT
JUMPE A,CPOPJ
GET1: HRRZ TT,(A) ;MUST PRESERVE B, C, AR1, T, D
JUMPE TT,FALSE ;(SEE EVAL AT EV3, MKNAM3, .REARRAY, AND ARRY1)
HLRZ A,(TT) ;ALSO PRESERVE R, SEE UUOH1
CAIE A,(B) ;ALSO AR2A AND F, SEE FASLOAD
JRST GET0
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
GETL: SKIPN V.RSET
JRST GETL5
SKOTT B,LS
JUMPN B,GETLE
GETLA: MOVEI TT,(A)
LSH TT,-SEGLOG
MOVE TT,ST(TT)
TLNE TT,LS+SY
JRST GETL1
JUMPN A,FALSE ;FALL INTO GETL5 - WON'T HURT
GETL5: JUMPN A,GETL1
MOVEI A,NILPROPS
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:
SKOTT A,LS+SY ;LISTS AND SYMBOLS ARE OKAY
JRST CSET7
CSET0C: 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
CSET0A: ;IF PROPERTY FOUND, CLOBBER IN
PURTRAP CSET4,T,HRLM B,(T)
BRETJ:
SPROG2: MOVEI A,(B) ;RETURN VALUE
POPJ P,
CSET7: JUMPN A,PROPER
MOVEI A,NILPROPS
JRST CSET0C
CSET2: PUSH P,A ;DOESN'T HAVE SUCH A PROPERTY, SO CONS ONE UP
SKIPE V.PURE
JRST CSETP1 ;MAYBE WANT TO PURE-CONS
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
HRRM A,(C) ;SETPLIST TO NEW THING
$CADR: HRRZ A,(A) ;RETURN VALUE (I.E. GET IT BACK)
HLRZ A,(A)
POPJ P,
CSET4: PUSH P,A ;FOOL PROPERTY IS IN A PURE PAGE
PUSH P,B
MOVEI T,(A)
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
POP P,B
POP P,A
JRST CSET0A ;NOW TRY IT
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, LAST, BOUNDP, RUNTIME
NOTNOT: JUMPE A,CPOPJ ;REPLACES A NON-NIL VALUE BY T
JRST TRUE
NOT:
$NULL: JUMPN A,FALSE
TRUE: MOVEI A,TRUTH
CNOT: POPJ P,NOT
LAST: SKIPN T,A ;SUBR 1 - GET LAST CONS OF A LIST
POPJ P, ;RETURN NIL IF NIL
LAST1: HRRZ TT,(T) ;ELSE USE SUPER-FAST LOOP
JUMPE TT,LAST2 ; - ONLY TWO INSTRUCTIONS
HRRZ T,(TT) ; PER LIST ELEMENT SKIPPED!
JUMPN T,LAST1
SKIPA A,TT
LAST2: MOVEI A,(T)
POPJ P,
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
MOVEI A,TRUTH
POPJ P,
;;; 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.
TIME: PUSH P,CFLOAT1 ;SUBR 0 NCALLABLE
IFN ITS,[
.RDTIME TT, ;GET AMOUNT OF TIME SYSTEM HAS BEEN UP
; 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,(30.0)
] ;END OF IFN ITS
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
IFN D20,[
LOCKI ;MUST LOCKI AROUND THE JSYS
$TIME ;GET TIME SINCE SYSTEM LAST RESTARTED IN MSECS
MOVE TT,1
SETZ 1, ;ZERO CRUD
UNLOCKI
JSP T,IFLOAT
FDVRI TT,(1000.0) ;CONVERT TO SECONDS
] ;END OF IFN D20
POPJ P,
IFN SAIL,[
TIME8:
ZZZ==1 ;WILL SUBTRACT THIS 1 BACK EXCEPT FOR AFTER FEB 29'S
IRP X,,[31.,28.,31.,30.,31.,30.,31.,31.,30.,31.,30.,31.]
ZZZ
ZZZ==ZZZ+X
TERMIN
IFN ZZZ-366., WARN [TABLE OF CUMULATIVE DAYS IN MONTHS LOSES]
EXPUNGE ZZZ
] ;END OF IFN SAIL
SUBTTL EQUAL FUNCTION
EQUAL: CAIN A,(B) ;EQ THINGS ARE EQUAL
JRST TRUE
MOVEM P,EQLP
PUSHJ P,EQUAL1 ;EQUAL1 ACTUALLY RETURNS ONLY IF EQUAL
JRST TRUE
EQUAL0: CAIN A,(B) ;EQ THINGS ARE EQUAL
POPJ P,
EQUAL1: MOVEI T,(A)
MOVEI TT,(B)
ROTC T,-SEGLOG ;GET TYPES OF ARGS
HRRZ T,ST(T)
MOVE TT,ST(TT)
CAIN T,(TT) ;MUST HAVE SAME TYPE TO BE EQUAL
2DIF JRST @(T),EQLTBL,QLIST .SEE STDISP
IFN HNKLOG,[
SKIPN VHUNKP
TLNN TT,LS
] ;END OF IFN HNKLOG
JRST EQLOSE
IFN HNKLOG,[
SKOTT A,LS ;IF VHUNKP CONTAINS NIL, THEN WANT TO
JRST EQLOSE ; TREAT ALL HUNKS AS IF THEY WERE LIST CELLS
] ;END OF IFN HNKLOG
EQLLST: PUSH P,(A)
PUSH P,(B)
HLRZ A,(A)
HLRZ B,(B)
PUSHJ P,EQUAL0 ;COMPARE CARS
HRRZ A,-1(P)
HRRZ B,0(P)
SUB P,R70+2
JRST EQUAL0 ;COMPARE CDRS
EQLTBL: EQLLST ;LIST
EQLNUM ;FIXNUM
EQLNUM ;FLONUM
DB$ EQLNM2 ;DOUBLE
CX$ EQLNM2 ;COMPLEX
DX$ EQLNM4 ;DUPLEX
BG$ EQLBIG ;BIGNUM
EQLOSE ;PNAME ATOMS MUST BE EQ TO BE EQUAL
REPEAT HNKLOG, 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
PUSH P,A
PUSH P,B
MOVNI T,2
2DIF [LSH T,(TT)]0,QHUNK1 ;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,
] ;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
PUSHJ P,.NCONC(R)
MOVE B,A
JRST APP2
.NCONC: JUMPE A,BRETJ ;SUBR 2 (*NCONC)
SKOTT A,LS
JRST NCNCER
.NCNC1: MOVEI TT,(A)
.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)
SKOTT A,LS
JRST APPERR
MOVEI C,AR1 ;MUST SAVE T,D - SEE MAKOBLIST
MOVE AR2A,A
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: MOVEI C,(A) ;SUBR 1 - USES A,B,C
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
NREVERSE:
TDZA B,B ;SUBR 1 - REVERSE A LIST USING RPLACD'S
NREV0: WTA [MUST BE A LIST - NRECONC/NREVERSE!]
NRECONC:
JUMPE A,BRETJ ;SUBR 2 - (NRECONC X Y)=(NCONC (NREVERSE X) Y)
SKOTT A,LS ;NRECONC/NREVERSE REQUIRES A LIST
JRST NREV0
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
GENSY4: 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: MOVE TT,GNUM
MOVEM TT,PNBUF
MOVEI C,PNBUF
JRST PNGNK2
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 GENSY4
SUBTTL MEMBER, MEMQ, SUBST, DELQ, DELETE, *DELQ, *DELETE
MEMBER: SETZM MEMV ;USES A,B,AR1,AR2A,T,TT
MOVEI AR1,(A)
MOVEI AR2A,(B)
JSP T,LATOM
JRST MEMB1
SMEMQ: SETZM MEMV ;USES A,B,T,MUST PRESERVE AR1,AR2A;SEE GTSPC3
MEMQ2: SKOTT B,LS
JRST FALSE
HLRZ T,(B)
CAMN A,T
JRST SPROG2
HRRM B,MEMV
HRRZ B,(B)
JRST MEMQ2
MEMB1: SKOTT AR2A,LS
JRST FALSE
MOVE A,AR1
HLRZ B,(AR2A)
PUSHJ P,EQUAL
JUMPN A,MEMB2 ;TRUE
HRRM AR2A,MEMV
HRRZ AR2A,(AR2A)
JRST MEMB1
AR2ARETJ:
MEMB2: MOVEI A,(AR2A)
POPJ P,
;;; 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: MOVE A,C
PUSHJ P,ATOM
JUMPE A,SUBS2
CRETJ:
SPROG3: MOVE A,C
POPJ P,
SUBS2: PUSH P,C
HLRZ C,(C)
PUSHJ P,SUBS0A
EXCH A,(P)
HRRZ C,(A)
PUSHJ P,SUBS0A
SUBS3: POP P,B
JRST XCONS
DELQ: SKIPA D,[SMEMQ] ;USES A,B,C,T,TT. MUST SAVE AR2A - SSMACRO
DELETE: MOVEI D,MEMBER ;USES A,B,C,AR1,AR2A,T,TT
MOVEI TT,-1 ;MUST SAVE R, SEE GCP6H1
CAMN T,XC-2
JRST DLT3
CAME T,XC-3
JRST DLT6
POP P,A
JSP T,FLTSKP
JRST .+2
JSP T,IFIX
DLT3: MOVEM TT,DLTC
MOVEI TT,(P)
SKIPA B,(P)
DLT2: HRRM B,(TT)
MOVEM TT,TABLU1
MOVE A,-1(P)
SOSGE DLTC
JRST DLT1
PUSHJ P,(D) ;MEMBER OR MEMQ
JUMPE A,DLT1
HRRZ B,(A)
SKIPN TT,MEMV
MOVE TT,TABLU1
JRST DLT2
DLT1: POP P,A
JRST POP1J
.DELQ: SKIPA D,[SMEMQ]
.DELETE:
MOVEI D,MEMBER
PUSH P,A
PUSH P,B
MOVEI TT,-1
JRST DLT3
.SEE THRCAB ;THIS ROUTINE REQUIRES MEMQ PRESERVES TT
MEMQ: JUMPE B,FALSE
HLRZ T,(B)
CAIN T,(A)
JRST BRETJ
HRRZ B,(B)
JRST MEMQ
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: MOVEI T,CPOPJ ;PDLNKJ = PDLNMK, THEN POPJ P,
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
PUSHJ P,SXHSH0 ;SAVE F - SEE DEFUN
MOVE TT,D
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
SKOTT A,LS
2DIF JRST @(TT),SXHSH9-1,QLIST .SEE STDISP
HRRZ B,(A)
PUSH P,B
HLRZ A,(A)
PUSHJ P,SXHSH0
ROT D,-1
PUSH FXP,D
POP P,A
PUSHJ P,SXHSH0
POP FXP,T
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: SXHSH7 ;FIXNUM
SXHSH8 ;FLONUM
DB$ SXHSD1 ;DOUBLE
CX$ SXHSC1 ;COMPLEX
DX$ SXHSZ1 ;DUPLEX
BG$ SXHSH4 ;BIGNUM
SXHSH5 ;SYMBOL
REPEAT HNKLOG, SXHS1A ;HUNKS
SXHSH6 ;RANDOM
SXHSH6 ;ARRAY
IFN .-SXHSH9-NTYPES+1, 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: MOVSI T,-2
2DIF [LSH T,(TT)]0,QHUNK1
PUSH P,A
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
$MAPCAN: JSP TT,MAPL0 ;CODE 5
MAPL0: AOJGE T,MAPWNA ;LOSE IF ONLY ONE ARG
MOVE D,T
ADDI D,1(P) ;D HAS ADDRESS OF LIST1 ON STACK
HRLI D,(T)
PUSH P,D
10$ SUBI TT,MAPLIST ;LOSING D10 DISALLOWS
10$ MOVSI TT,-1(TT) ; NEGATIVE RELOCATION
.ELSE MOVSI TT,-MAPLIST-1(TT) ;FIGURE OUT CODE FOR WHICH KIND OF MAP
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 LAFT 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
PUSHJ P,LAST ;FIND LAST OF THIS NEW FROB
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
$BRK0: MOVEI A,(B) ;A = BREAKP, B = BREAKID
HRRZ B,V.
HRRZ AR1,VIPLUS
HRRZ AR2A,VIDIFF
JSP T,SPECBIND ;DO *NOT* BIND ↑R
TAPRED ;↑Q
TTYOFF ;↑W
Q% TYIMAN
Q% TMBBC
VEVALHOOK ;EVALHOOK
V%TERPRI ;TERPRI
0 B,V. ;*
0 AR1,VIPLUS ;+
0 AR2A,VIDIFF ;-
IFN QIO,[
MOVEI B,$DEVICE
MOVEI C,UNTYI
;; MOVEI AR1,READP
;; MOVEI AR2A,UNRD
JSP T,SPECBIND
0 B,TYIMAN
0 C,UNTYIMAN
;; 0 AR1,READPMAN
;; 0 AR2A,UNREADMAN
] ;END OF IFN QIO
Q% SETZM RDOBCT
MOVEI AR2A,TRUTH
JSP T,SPECBIND
0 AR2A,V%TERPRI
STRT 17,[SIXBIT \↑M;BKPT !\]
Q% PUSHJ P,PRINC ;PRINC BREAK ID
Q$ HRRZ AR1,VMSGFILES
Q$ TLO AR1,200000
Q$ PUSHJ P,$PRINC
STRT 17,STRTCR
PUSHJ P,UNBIND ;UNBIND V%TERPR
MOVE A,VIDIFFERENCE
MOVEM A,VIPLUS
MOVEI D,BRLP ;FUNCTION TO EXECUTE
PUSHJ P,BRGEN ;CATCH AND ERRSET AROUND A READ-EVAL-PRINT LOOP
Q% SKIPN LINMODE
Q$ JSP F,LINMDP
PUSHJ P,ITERPRI
Q$ PUSHJ P,UNBIND
JRST UNBIND
CB: SKIPN V.RSET ;CALL BREAK - *RSET ERROR
POPJ P,
SKIPA B,[Q.R.TP]
Q% CN.HB: MOVEI B,QCN.H ;CONTROL-H BREAK
Q$ 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
Q$ IOLB: MOVEI B,QIOL ;I/O LOSSAGE BREAK
Q$ JRST BKCOM
FACB: MOVEI B,QFAC ;FAILED ACTION REQUEST BREAK
BKCOM:
PUSHJ P,IOGBND
SAVE A B
Q% MOVEI A,NIL
Q% PUSHJ P,ERRPRINT
IFN QIO,[
PUSH P,CBKCM0
PUSH P,R70
PUSH P,VMSGFILES
MOVNI T,2
JRST ERRPRINT
BKCOM0:
] ;END OF IFN QIO
JSP R,RSTR2
BKCOM2: MOVEI AR1,READTABLE
MOVEI AR2A,OBARRAY
JSP T,SPECBIND
0 A,VARGS ;SPECIAL VALUE CELL OF ARGS
0 AR1,VREADTABLE ;RESET READTABLE AND OBARRAY
0 AR2A,VOBARRAY ; TO STANDARD (INITIAL) ONES
Q% SETZ A,
Q$ CBKCM0:
Q$ SETZ A,BKCOM0
PUSHJ P,NOINTERRUPT
MOVEI A,TRUTH
PUSHJ P,$BREAK
BKCOM1:
PUSHJ P,UNBIND
JRST UNBIND
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)
SKIPGE LPNF
JRST MAKA2
SKIPE B,V.PURE ;INTERN MAKES PURE SY2 IF *PURE=T ANDNOT 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
Q% PUSH P,MKNM3
Q% HRRZM A,MKNM3
Q$ PUSH P,RDLARG
Q$ HRRZM A,RDLARG
MOVEI T,MKNM1
PUSHJ FXP,MKNR6C
Q% POP P,MKNM3
Q$ POP P,RDLARG
CRINTERN:
POPJ P,RINTERN
IFN QIO,[
MKNM1: SKIPN A,RDLARG
POPJ P,
HRRZ B,(A)
MOVEM B,RDLARG
HLRZ A,(A)
MKNM2: JSP T,CHNV1
JRST POPJ1
] ;END OF IFN QIO
IFE QIO,[
MKNM1: SKIPN B,MKNM3 ;GET NEXT CHAR FOR MAKNAM
JRST FALSE
MKRL1: HRRZ A,(B)
HRRM A,MKNM3
HLRZ A,(B) ;B HOLDS LIST FROM WHICH TO GET NEXT CHAR FOR
JSP T,CHNV1
MOVEI A,(TT)
POPJ P,
] ;END OF IFE QIO
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
$CAR: HLRZ A,(A)
C$CAR: POPJ P,$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).
;;; 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
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
SUBTTL TYIPEEK FUNCTION
IFE QIO,[
TYIPEEK:
SKIPA D,[MAKNUM]
MOVEI D,A2TT
AOJL T,TYPKER
MOVNI TT,1 ;-1 => NO ARG, SO ANY NEXT CHAR IS TAKEN
JUMPN T,TYPK4D
TYPK4: POP P,A ;IF ARG GIVEN, THEN SCAN UNTIL SPECIFIC KIND OF CHAR IS FOUND
MOVNI TT,2 ;-2 => ARG OF T GIVEN
CAIN A,TRUTH ;ARG OF T MEANS SCAN FOR READ STARTUP CHAR
JRST TYPK4D
JSP T,FXNV1 ;IF ARG >777, THEN IT IS SYNTAX TYPE OF CHAR TO FIND
CAIGE TT,1000 ;IF ARG < 1000, THE IT IS SPECIFIC CHAR'S ASCII VALUE
JRST TYPK4D
NW% LSH TT,-9.
TLO TT,400000
TYPK4D: PUSH P,D
PUSH FXP,TT
JSP T,RSXST
TYPK4A: SKIPN A,TYIMAN
JRST TYPK5
PUSHJ P,(A)
CAIN A,203 ;PSEUDO-SPACE AT END OF SFA
MOVEI A,↑C
CAIN A,↑C
JRST TYPK3B
PUSHJ P,TYPK7
JRST TYPK4A
MOVEM A,TMBBC
TYPX: SUB FXP,R70+1
POPJ P,
TYPK5: SKIPN TAPRED
JRST TYPK6
TYPK5A: PUSHJ P,URED
JRST TYPK3
PUSHJ P,TYPK7
JRST TYPK5A
EXCH A,C
PUSHJ P,READ3 ;BACK UP UTIBP
EXCH A,C
JRST TYPX
TYPK3: JSP A,.UEOF
TYPK3B: MOVEI A,3 ;3 IS ASCII E-O-F
JRST TYPX
;;; IFE QIO
TYPK6: SKIPE A,RDTYBF
JRST TYPK6A
TYPK6B: PUSHJ P,TYIN
PUSHJ P,TYPK7
JRST TYPK5
MOVEM A,PBFTY
JRST TYPX
TYPK6A: HLRZ A,(A)
CAIE A,203
PUSHJ P,TYPK7
JRST .+2
JRST TYPX
MOVE A,RDTYBF ;CHAR NOT ACCEPTABLE, SO CDR THE RDTYBF
HRR A,(A) ;AND TRY AGAIN
TRNN A,-1
MOVEI A,NIL
MOVEM A,RDTYBF
JUMPN A,TYPK6A
JRST TYPK6B
TYPK7: SKIPL T,(FXP) ;SKIP IF SOUGHT CHAR IS PRESENT IN A
JRST TYPK7A
NW% HLRZ TT,@RSXTB ;SIGN BIT MEANS WE ARE LOOKING FOR RCT TYPE
NW$ MOVE TT,@RSXTB
CAMN T,XC-2 ;-2 => ARG OF T, SO LOOK FOR READ STARTUP CHAR
JRST TYPK7B
CAME T,XC-1 ;-1 => NO ARG, SO ANY NEXT CHAR IS ACCEPTABLE
TDNE TT,T
AOS (P)
POPJ P,
TYPK7A: CAIN A,(T) ;OTHERWISE, LOOKING FOR SPECIFIC CHAR
AOS (P)
POPJ P,
TYPK7B:
NW% TRC TT,4040 ;IN (TYIPEEK T) MODE
NW% TRCE TT,4040
NW$ TLNE TT,(RS.MAC) ;SKIP IF NOT MACRO
NW$ TRNN TT,RS.ALT ;MACRO - SKIP IF SPLICING
JRST TYPK7D
PUSHJ FXP,SAV5M1
HRRZ A,@RSXTB
CALLF 0,(A) ;EXECUTE SPLICING MACRO, AND TRY AGAIN
PUSHJ FXP,RST5M1
POPJ P,
TYPK7D:
NW% TRNE TT,266217 ;CODES TO START OFF A READ
NW$ TDNE TT,[1266217000] ;CODES TO START OFF A READ
AOS (P)
POPJ P,
] ;END OF IFE QIO
IFN QIO,[
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
MOVEI A,Q%TYI
HRLZM A,BFPRDP
MOVEI A,(AR2A) ;GET ARG 1 IN A
JSP T,GTRDTB ;GET READTABLE IN AR2A
JUMPN A,TYPK1 ;NIL => ACCEPT ANY CHAR
$$PEEK: HRRZ TT,TYIMAN ;CALL TYIMAN ONE EARLY TO
JRST -1(TT) ; SPECIFY PEEKING
TYPK1: CAIE A,TRUTH ;T => SEARCH FOR READER START
JRST TYPK3 ; CHARACTER (E.G. PAREN, MACRO)
TYPK1C: PUSHJ P,$$PEEK ;PEEK AT A CHAR
JUMPL TT,TYPK9A ;HIT EOF - TAKE A "SOFT" EOF, RETURN -1
MOVE T,@TTSAR(AR2A) ;PEEK SETS UP AR2A
TLC T,4040 .SEE SYNTAX
TLCE T,4040
JRST TYPK1F
PUSH P,T
PUSHJ P,@TYIMAN
POP P,T
CALLF 0,(T) ;HIT A HORRIBLE SPLICING MACRO
JRST TYPK1C ;GO BACK AND TRY AGAIN
TYPK1F: TLNE T,266217 .SEE SYNTAX ;READER START CHARS
POPJ P,
TYPK1H: PUSHJ P,@TYIMAN ;CHAR NOT ACCEPTABLE - GOBBLE IT
JRST TYPK1C ;NOW GO TRY AGAIN
TYPK3: JSP T,FXNV1 ;ARG MUST BE FIXNUM
JUMPL TT,TYPK3C ;ARG BETWEEN 0 AND 777 =>
CAIG TT,777 ; SCAN FOR THAT CHARACTER;
TLOA TT,400000 ; OTHERWISE IS A SYNTAX, LSH'ED
TYPK3C: LSH TT,-11 ; LEFT BY 11, TO SERVE AS MASK
PUSH FXP,TT
TYPK4: PUSHJ P,$$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 POPXTJ ;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
JRST POPXTJ
TYPK9: SUB FXP,R70+1
TYPK9A: SKIPN EOFRTN ;"SOFT" EOF. DOES NOT INVOKE
JRST M1TTPJ ; THE EOFFN, BUT WILL PICK UP
JRST EOF9 ; THE EOFVAL IF NECESSARY.
] ;END OF IFN QIO
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
CAIN A,TRUTH ;T MEANS KILL AS QUIETLY AS POSSIBLE
JRST VLRT3
MOVEI D,160000 ;VANILLA-FLAVORED KILL
CAIN A,Q$ERROR ;ERROR MEANS WE SHOULD KILL INPUT BUFFER
TRZ D,100000
MOVEI TT,(A)
LSH TT,-SEGLOG
MOVE TT,ST(TT)
TLNE TT,FX
MOVE D,(A) ;FIXNUM ARG => USE FOR .BREAK 16, ARG
JRST VLRT3A
VALRET: JUMPE T,VLRT9 ;LSUBR (0 . 1)
JSP TT,LWNACK
LA01,,QVALRET
POP P,A
PUSHJ P,VALSTR
10% SETOM SAWSP
PUSHJ P,RETVAL ;VALRET STRING ON FXP IN APPROPRIATE MANNER
10% SETZM SAWSP
10$ EXIT 1,
20$ WARN [TWENEX VALRET EXIT?]
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 \
\]
JRST VLRT3
JRST VLRT5
VLRT1: CAMN D,[ASCII \≠_.\]
JRST VLRT3
CAME D,[ASCII \≠≠U\]
CAMN D,[ASCII \≠≠u\]
IT$ .LOGOUT
.ELSE XCT 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
20$ WARN [VALRET IN TWENEX?]
MOVE FXP,(FXP)
POPJ P,
VLRT3:
IT$ MOVEI D,120000 ;"SILENT KILL"
VLRT3A:
10$ EXIT 1,
20$ HALTF
10X WARN [HOW TO EXIT IN TENEX]
IFN ITS,[
.LOGOUT ;TRY TO LOG OUT
JSP T,SIDDTP
.VALUE
.BREAK 16,(D)
VLRT9: .LOGOUT ;TRY TO LOG OUT
.VALUE [ASCIZ \:VK \] ;OH, WELL...
POPJ P, ;IN CASE LOSER DOES $P FROM IT
SIDDTP: .SUSET [.ROPTION,,TT]
TLNN TT,OPTBRK ;SKIP IF JOB INFERIOR TO DDT
JRST (T) ; (ACTUALLY, IF SUPERIOR HANDLES .BREAK)
JRST 1(T)
] ;END OF IFN ITS
IFE ITS,[
VLRT9: EXIT 1,
POPJ P,
];END IFE ITS
SUSPEND: ;LSUBR (0 . 2)
JSP TT,LWNACK
LA012,,QSUSPEND
IT$ SETZM PURDEV ;ASSUME NO DUMPING
PUSH FLP,NIL ;ASSUME WE ARE RETURNING FROM A RESTART
PUSH FLP,NIL ;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 (QIO ONLY)
IFN SAIL*HISEGMENT,[
IFE QIO,[
SAVEFX UFN1 UFN2 ;SAVE CURRENT FILE NAMES
JSP T,SPECBIND
IUNIT
PUSHJ P,UINITA ;PARSE SECOND ARG TO SUSPEND
UNLOCKI ;UNDO THE LOCKI THAT CRETINOUS UINITA PERFORMED
SAVEFX T
PUSHJ P,UNBIND ;POP SAVED FILE NAMES
RSTRFX T UFN2 UFN1
MOVEM TT,SGAEXT
MOVE R,USN
MOVEM R,SGAPPN
MOVE R,UTIN
MOVEM R,SGADEV
] ;END OF IFE QIO
IFN QIO,[
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
] ;END IFN QIO
FAC [FAILED TO SAVE HIGH SEGMENT - SUSPEND!]
] ;END OF IFN SAIL*HISEGMENT
IFN ITS*QIO,[
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*QIO
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
JRST SUSP0E
SUSPGC: 666666,,SUSGC1 ;GARBAGE COLLECTOR STACK WORD
SUSP0: PUSH FXP,R70 ;ZERO WORD MEANS VALRET STRING
SUSP0E: PUSH P,SUSPGC
JRST AGC
SUSGC1:
IFE QIO,[
SETZ A,
MOVEI T,SUSCHS
SUSP11: JUMPE T,SUSP12
MOVE B,SUSTBL-1(T)
SKIPN (B)
SOJA T,SUSP11
HLRZS B
PUSHJ P,XCONS
SOJA T,SUSP11
SUSTBL:
QUREAD,,UTIOPD
QUWRITE,,UTOOPD
IT$ QPRINT,,LPTOPD
IFN MOBIOF,[
IRP X,,[IMX,OMX,IPL,DIS,NVD,BVD]Y,,[IMPX,OMPX,PLOT,DISPLAY,NVFIX,NVID]
Q!Y,,X!OPD
TERMIN
] ;END OF IFN MOBIOF
SUSCHS==.-SUSTBL
] ;END OF IFE QIO
IFN QIO,[
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
] ;END OF IFN QIO
SUSP12: JUMPN A,SUSPE
IFN QIO,[
HRRZ A,V%TYI ;CLOSE THE TTYS LAST, SO THEY WONT CAUSE
PUSHJ P,$CLOSE ;SPURIOUS "CANT SUSPEND -I/O IN PROGRESS"
HRRZ A,V%TYO
PUSHJ P,$CLOSE
] ;END OF IFN QIO
SUSP1: HRROS NOQUIT
MOVEM NIL,GCNASV+1
MOVE T,[FREEAC,,GCNASV+2]
BLT T,GCNASV+2+17-FREEAC
SETOM NOPFLS
IFN ITS,[
IFN USELESS*QIO,[
MOVE T,IMASK
TRNN T,%PIMAR
JRST SUSP14
.SUSET [.RMARA,,SAVMAR]
.SUSET [.SMARA,,R70]
SUSP14:
] ;END OF IFN USELESS*QIO
.SUSET [.SSNAM,,IUSN]
SETOM SAWSP
MOVEI T,FLSST
EXCH T,LISPSW
MOVEM T,GCNASV
SKIPE SUSFLS ;IF FLUSHING PURE PAGES PROCESS VALRET THEN
JRST FLSLSP
FLSNOT: PUSHJ P,PDUMPL ;PURE DUMP LISP IF APPROPRIATE
MOVEI T,SUSP3 ;FROM HERE ON IN START AT SUSP3 DIRECTLY
MOVEM T,LISPSW
SKIPE (FLP) ;NIL JCL?
JRST SUSCON ;YES, CONTINUE ON AND RETURN T
SKIPN (FXP) ;ZERO WORD MEANS NO VALRET STRING
JRST SUSP23
PUSHJ P,RETVAL
JRST SUSCON
SUSP23: MOVE T,FXP
POPI T,1
MOVEM T,(FXP)
.VALUE FLSPA1 ;PRINT SUSPENSION MESSAGE
JRST SUSCON
] ;END OF IFN ITS
IFN D20,[
MOVEI T,SUSP3
EXCH T,LISPSW
MOVEM T,GCNASV
SKIPE (FLP) ;NIL JCL?
JRST SUSCON ;YES, PROCEED
SKIPN 1,(FXP)
JRST SUSP24
HRROI 1,1(1)
PSOUT
JRST SUSP25
SUSP24: MOVE T,FXP
POPI T,1
MOVEM T,(FXP)
SUSP25: HRROI 1,[ASCIZ\
;Suspended
\]
HALTF
] ;END OF IFN 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
HRRM T,RETHGH
SKIPE (FLP) ;NIL JCL?
JRST SUSCON ;YES, CONTINUE AND RETURN T
OUTSTR [ASCIZ \
:$SUSPENDED$
\]
SKIPN (FXP)
JRST SUSP24
SA$ PUSHJ P,RETVAL ;PTLOAD VALRET STRING FOR SAIL
JRST SUSP25
SUSP24: MOVE T,FXP
POPI T,1
MOVEM T,(FXP)
SUSP25:
HS$ JRST KILHGH
] ;END OF IFN D10
;;; HERE ON STARTUP AGAIN AFTER SUSPENSION
SUSP3: 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)
IFN ITS+D20,[
MOVE T,GCNASV
MOVEM T,LISPSW
JSP T,SHAREP ;RE-READ PURE PAGES IF EVERYTHING IS IN ORDER
IFE QIO*<ITS-1>,[
.SUSET [.SDF1,,R70]
.SUSET [.SDF2,,R70]
.SUSET [.SMASK,,IMASK]
] ;END OF IFE QIO*ITS
IFN QIO*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 QIO*ITS
] ;END OF IFN ITS+D20
IFN D10,[
MOVE T,GCNASV
HRRM T,.JBSA"
HLRM T,.JBREN
Q% MOVEI T,630000
Q% APRENB T,
Q$ PUSHJ P,ENBINT ;ENABLE INTERRUPTS
SA% GETPPN T,
SA% JFCL
SA$ SETZ T,
SA$ DSKPPN T, ;AS SET BY ALIAS
MOVEM T,USN
PUSHJ P,SIXJBN
] ;END OF IFN D10
IFN D20,[
JSP T,SHAREP ;RESHARE PAGES IF APPLICABLE
PUSHJ P,ENBINT ;RE-ENABLE INTERRUPTS
] ;END IFN D20
SETZM NOPFLS
HRRZS NOQUIT
IFN QIO,[
IT$ MOVE TT,IUSN ;IUSN WAS SET UP BY LISPGO
IT$ MOVEM TT,TTYIF2+F.SNM
IT$ MOVEM TT,TTYOF2+F.SNM
10$ MOVE TT,USN
10$ MOVEM TT,TTYIF2+F.PPN
10$ MOVEM TT,TTYOF2+F.PPN
PUSH FXP,TT
PUSHJ P,OPNTTY ;*** TEMP CROCK?
JFCL
PUSH FXP,R70
MOVEI A,-1(FXP)
HRLI A,440600
] ;END OF IFN QIO
IFN ITS*<QIO-1>,[
.SUSET [.RSNAM,,TT]
MOVEM TT,IUSN
MOVEM TT,USN
PUSHJ P,TTYOPN
MOVE A,[440600,,USN]
] ;END OF IFN ITS*<QIO-1>
IT$ PUSHJ P,READ6C
SA% 10$ PUSHJ P,SUNAME
IFN SAIL*<QIO-1>,[
SETZ D,
DSKPPN D,
PUSHJ P,SUNM2
] ;END IFN SAIL*<QIO-1>
IFN SAIL*QIO,[
SETZ TT,
DSKPPN TT, ;PPNATM REQUIRES ARG IN TT
PUSHJ P,PPNATM
] ;END IFN SAIL*QIO
Q$ SUB FXP,R70+2
IFN D20,[
MOVE TT,[PNBUF,,PNBUF+1]
SETZM PNBUF ;CLEAR PNBUF
BLT TT,PNBUF+LPNBUF-1
LOCKI
GJINF ;GET JOB INFORMATION
MOVE 2,1 ;1 HAS LOGIN DIRECTORY NUMBER
MOVE 1,PNBP ;POINTER INTO PNBUF
DIRST ;GET EQUIVALENT ASCII STRING
HALT ;HMM...
SETZB 1,2
UNLOCKI
PUSHJ P,PNBFAT ;CONVERT PNBUF TO AN ATOM
] ;END IFN D20
MOVEM A,SUDIR
POPI FLP,1 ;REMOVE NIL VALRET FLAG
POP FLP,A ;RESTORE RETURN VALUE
POPJ P,
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
IFN SAIL,[
Q% PUSH FXP,T
Q$ PUSH FXP,SGANAM
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,400000-1
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, ;TRY TO SET NAME FOR HIGH SEGMENT
JFCL
SAPWIN:
] ;END OF IFN SAIL
SETZM SGANAM
IFN SAIL,[
;;;SAVE VALIDATION WORDS IN HISEG, HOPE THAT HISEG WRITEABLE
MOVE D,SGAEXT
MOVEM D,PSGEXT
MOVE D,SGAPPN
MOVEM D,PSGPPN
MOVEI D,.IODMP
MOVE R,SGADEV
MOVEM R,PSGDEV
SETZ F,
OPEN TMPC,D
UNLKPOPJ
MOVE TT,SGAEXT
SETZ D,
MOVE R,SGAPPN
POP FXP,T
MOVEM T,PSGNAM
ENTER TMPC,T
UNLKPOPJ
MOVEI TT,400000-1 ;MAKE UP IOWD
SUB TT,.JBHRL
MOVSS TT
HRRI TT,400000-1
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 OF IFN SAIL
] ;END OF IFN D10
] ;END IFN HISEGMENT
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,[$ERRFRAME]
MOVEI B,QERR
PUSHJ P,XCONS
JRST POPBJ
FRM2B: TLNE R,1
ADD D,R70+2 ;WHEN SEARCHING FORWARD, SKIP OVER CALL
JRST FRM2A ;TO EVALFRAME
GTPDLP: ;CALLED BY JSP R,GTPDLP; RETURNS PDL PTR IN D
MOVEI D,(P)
JUMPE A,GTPDL2 ;ARG=NIL => START SEARCH FROM CURRENT PDL POS
JSP T,FXNV1 ;NOTE: EVALFRAME LOOKS AT BIT 3.1 OF R
JUMPL TT,GTPDL5 ;BIT 3.1 OF R = 0 WHEN SEARCHING BACK THE PDL
TLO R,1 ;BIT 3.1 OF R = 1 WHEN SEARCHING FORWARD
MOVNS TT ;WANT TO SKIP OVER THE FRAME MARKER WHEN
SKIPN TT ; SEARCHING FORWARD (SINCE A PDLPOINTER WILL
SKIPA TT,C2 ; BE POINTING TO ONE BELOW A FRAME MARKER)
ADD TT,R70+2
GTPDL5: TLZ TT,-1
HRRZ T,C2
CAIGE TT,(T)
JRST GTPDL1
MOVEI T,(P)
SUBI T,(TT)
JUMPLE T,GTPDL1
MOVEI T,(TT)
CAIL T,(P)
MOVE TT,P
HRROI D,(TT)
GTPDL2: MOVE TT,(R) ;KEY ON WHICH TO SEARCH
JUMPE TT,2(R) ;MATCH 0 => NO SEARCH, JUST GIVE OUT PDL PTR
MOVE F,1(R) ;WELL, IT'S POSSIBLE TO SEARCH FOR TWO THINGS
TLNE R,1
JRST GTPDL4
HRRZ T,C2
GTPDL3: CAIL T,(D) ;A BACK SEARCH
JRST 2(R) ;SEARCHED-AND-FAILED EXIT
CAMN TT,(D)
JRST GTPX0
CAMN F,(D)
JRST GTPX1
SOJA D,GTPDL3
GTPDL4: MOVEI T,(P)
GTP4A: CAMN TT,(D)
JRST GTPX0
CAMN F,(D)
JRST GTPX1
CAIG T,(D)
JRST 2(R) ;FAILURE
AOJA D,GTP4A
GTPX0: TDZA F,F
GTPX1: MOVEI F,1
JRST 3(R)
FRETURN: MOVE C,B
JSP R,GTPDLP
0
JFCL
MOVEI F,(D)
MOVE TT,[$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 TT,FRP1
JRST BKRST0
FRP4: SKIPE B,CATRTN ;BREAK UP A CATCH
CAIL F,(B)
JRST FRP3
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: MOVE 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)
] ;END OF IFN PAGING
HLRZ TT,-1(P)
JRST UBD ;UNBIND TO MARKED POINT, AND POP FRAME
SUBTTL GETCHAR, GETCHARN, AND SUBLIS
$GETCHARN: PUSH P,CFIX1 ;SUBR 2 - NCALLABLE
SKIPA F,[ZPOPJ,,CPOPJ]
GETCHAR: MOVE F,[FALSE,,RDCH2] ;SUBR 2
SKIPE V.RSET
JRST GETCH8
MOVE D,(B)
PUSHJ P,PNGT0
GETCH1: SOJL D,(F)
IDIVI D,5 ;(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 A,(A)
LDB TT,GTCTB(R)
JUMPN TT,(F)
GETCH4: MOVS F,F
JRST (F)
GETCH8: JSP T,FXNV2
PUSHJ P,PNGET
JRST GETCH1
GTCTB: 350700,,(A)
260700,,(A)
170700,,(A)
100700,,(A)
010700,,(A)
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: MOVEI D,TRUTH ;MUST PRESERVE C,AR1,AR2A,R,F (SEE SORT)
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]
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:
JUMPE A,CPOPJ ;IF NIL THEN DON'T COPY
JSP T,SPATOM
JSP T,PNGE
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: HLRZ A,@(P) ;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) ;CONTENTS OF VALUE CELL
CAIN A,QUNBOUND ;IF UNBOUND DON'T BOTHER COPYING
JRST S1PAJ
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, ASSQ
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: SAVE 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,ASSQ
JUMPE A,SSPROX
HRRZ B,(B)
HRRZ T,(A)
CAME R,(T) ;COMPARES READTABLE AND NUMBER
JRST SSGRL2
MOVE B,PROLIS
PUSHJ P,.DELETE
MOVEM A,PROLIS
MOVEI A,0
JRST SSPROX
IFE QIO,[
SUBTTL IOC AND IOG FUNCTIONS
IOC: JUMPE A,CPOPJ ;FSUBR
HRROI R,IOC1
PUSHJ P,PRINTA
JRST TRUE
IOC1: CAIL A,"@ ;100
CAILE A,"↑ ;136
POPJ P,
SETZM IPCLOK
PUSHJ P,UINTPU
ANDCMI A,100
JSR CNTROL
IOC2: JRST UINTEX
IOG: PUSHJ P,IOGBND ;FSUBR
HRRZ B,(A)
HLRZ A,(A)
PUSH P,B
SKIPE A
PUSHJ P,IOC
POP P,B
PUSHJ P,IPROGN
JRST UNBIND
] ;END OF IFE QIO
AUTOLOAD:
HRL A,T
PUSHJ P,ACONS
MOVSS (A)
PUSH P,A ;FOR GC PROTECTION
IFE QIO,[
HRLI A,18. ;INTERRUPT NO. FOR AUTOLOAD FUN
MOVSS A
PUSHJ P,UINT
] ;END OF IFE QIO
IFN QIO,[
PUSH FXP,D
MOVSI D,(A)
HRRI D,1000 ;AUTOLOAD USER INTERRUPT
PUSHJ P,UINT
POP FXP,D
] ;END OF IFN QIO
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
IFN QIO,[
MOVEI AR1,(T)
CAIN AR1,TRUTH
HRRZ AR1,V%TYI
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:
] ;END OF IFN QIO
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]
Q$ 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*ITS,[
IFE QIO,[
CURSORPOS:
JSP TT,LWNACK ;LSUBR (0 . 2) - HACK CURSOR
LA012,,QCURSORPOS ; FOR CHARACTER DISPLAYS
JSP R,PDLA2(T)
SKIPN TTYOFF ;↑W DISABLES, OF COURSE
SKIPN TTYDISP ;USELESS ON PRINTING TERMINALS
JRST FALSE
JUMPE T,CRSRP1 ;0 ARGS - GET POSITION
AOJE T,CRSRP3 ;1 ARG - SPECIAL HACKS (↑P CODES)
PUSH P,B ;2 ARGS - SET POSITION (↑P H, ↑P V)
MOVSI R,(ASCII \⊂V\) ;SET VERTICAL POSITION
PUSHJ P,CRSRP5
MOVSI R,(ASCII \⊂H\) ;SET HORIZONTAL POSITION
POP P,A
CRSRP5: JUMPE A,TRUE ;NIL MEANS NO CHANGE
JSP T,FXNV1
SKIPGE TT
SETZ TT,
CAILE TT,167 ;NOR ARG ABOVE 167
MOVEI TT,167
ADDI TT,10 ;ADD 10 FOR ↑P CROCK
DPB TT,[170700,,R]
CRSRP7: MOVEI D,R
PUSHJ P,SRNTYP ;SHOVE OUT ↑P COMMAND
JRST TRUE
CRSRP3: JSP T,SPATOM ;IF SYMBOL, USE FIRST CHAR
JRST CRSRP4
JSP T,CHNV1
JRST CRSRP6
CRSRP4: JSP T,FXNV1 ;ELSE BETTER BE FIXNUM
CRSRP6: MOVEI R,(TT)
TRC TT,100
TDNE TT,[-40]
JRST CRSRP2
MOVE TT,GCBT(TT)
TDNN TT,CRSRP9
JRST CRSRP2
LSH R,26 ;IF LEGAL, PUT A ↑P IN FRONT
TLO R,<↑P>←13 ; AND HAND IT OFF TO SRNTYP
MOVEI D,R
JRST CRSRP7
CRSRP9:
ZZZ==0
IRPC X,,[ABCDEFKLMNTUXZ[\]↑←]
ZZZ==ZZZ\<SETZ←-<"X&37>>
TERMIN
ZZZ ;BITS SPECIFYING VALID ↑P CODES
EXPUNGE ZZZ ;NOTE: H, I, AND V NOT VALID HERE!
CRSRP1: .CALL RCPSBK ;GET CURRENT CURSOR POSITION
.LOSE 1400
MOVEI TT,(D) ;CONS THEM UP FOR LOSER
JSP T,FIX1A
MOVEI B,(A)
HLRZ TT,D
JSP T,FIX1A
JRST CONS
] ;END OF IFE QIO
;;; IFN USELESS*ITS
IFN QIO,[
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
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 ;2 ARGS
JRST CRSR11
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
HRLI D,10(TT) ;ADD MAGIC 10 TO AMOUNT FOR ↑P
CRSRP7: .5LKTOPOPJ .SEE INTTYR
.SEE CNPCOD
MOVEI A,NIL ;RETURN NIL BY DEFAULT
HLLOS NOQUIT
MOVE T,TTSAR(AR1)
.CALL VAROPT ;GET TTY INFO
JRST CZECHI ;IF FAILURE THEN ASSUME CAN'T DO ANYTHING
XCT CNPOK-"A(D) ;CHECK IF LEGAL FOR THIS TYPE OF TTY
JRST CZECHI ;NOPE, SO RETURN NIL
MOVEI A,TRUTH ;RETURN TRUTH IF WE GOT THIS FAR
JRST CNPCUR ;THIS UNDOES THE LOCKING STUFF
CRSRP3: JSP T,SPATOM ;IF SYMBOL, USE FIRST CHAR
JRST CRSRP4
PUSHJ P,CRSR40
JRST CRSRP6
CRSR40: JSP T,CHNV1
CAIL TT,140
SUBI TT,40 ;CONVERT TO UPPER CASE
POPJ P,
CRSRP4: JSP T,FXNV1 ;ELSE BETTER BE FIXNUM
CRSRP6: MOVEI D,(TT)
TRC TT,100
TDNE TT,[-40]
JRST CRSRP2
MOVE TT,GCBT(TT)
TDNN TT,CRSRP9
JRST CRSRP2
JRST CRSRP7
CRSRP9:
ZZZ==0
IRPC X,,[ABCDEFKLMNTUXZ[\]↑←]
ZZZ==ZZZ\<SETZ←-<"X&37>>
TERMIN
ZZZ ;BITS SPECIFYING VALID ↑P CODES
EXPUNGE ZZZ ;NOTE: H, I, AND V NOT VALID HERE!
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
CRSRP1: PUSHJ P,FORCE1
MOVEI TT,F.MODE
MOVE F,@TTSAR(AR1)
MOVEI TT,F.CHAN
.CALL RCPOS ;GET CURRENT CURSOR POSITION
.LOSE 1400
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
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 QIO
] ;END OF IFN USELESS*ITS
IFN FUNAFL,[
SUBTTL RANDOM ROUTINES TO HANDLE A PSEUDO ALIST
%%FUNCTION: MOVEI D,Q%%FUNCTION
JUMPE A,WNAFOSE
HRRZ C,(A)
JUMPN C,.FUNC1
HLRZ B,(A) ;HALF-ASSED FUNARG BINDING
HRROI TT,(SP) ;ONE LH AS GOOD AS ANOTHER
JSP T,FIX1A
PUSHJ P,XCONS
.FUNC4: MOVEI B,QFUNARG
JRST XCONS
.FUNC1: HLRZ AR2A,(A)
HLRZ AR1,(C)
HRRZ C,(C)
JUMPN C,WNAFOSE
.FUNC2: JUMPE AR1,.FUNC3
HLRZ A,(AR1)
JSP T,SPATOM
JSP T,PNGE1
HLRZ B,(A)
HLRZ B,@(B)
PUSHJ P,CONS
MOVEI B,(C)
PUSHJ P,CONS
HRRZ AR1,(AR1)
JRST .FUNC2
.FUNC3: MOVEI A,(C)
MOVEI B,TRUTH
PUSHJ P,NRECONC
MOVEI B,(AR2A)
PUSHJ P,CONS
JRST .FUNC4
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
POP FXP,T ;SKIP 1 RETURN
JRST 1(T)
;;; IFN FUNAFL
;;; 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
;;; IFN FUNAFL
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!
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
;;; IFN FUNAFL
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 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
;;; IFN FUNAFL
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,
] ;END OF IFN FUNAFL
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, LISTEN, ALARMCLOCK
;;; (SLEEP <N>) SLEEPS FOR <N> SECONDS. <N> MAY BE A FIXNUM OR FLONUM.
$SLEEP: JSP T,FLTSKP ;SUBR 1
IT% CAIA
IT$ JSP T,M30.
IT$ FMPR TT,[30.0]
JSP T,IFIX
IT$ .SLEEP TT, ;SLEEP FOR <TT> 30TH'S OF A SECOND
10$ SLEEP TT, ;SLEEP FOR <TT> SECONDS
IFN D20,[
WARN [INTERRUPTING OUT OF SLEEP REQUIRES THOUGHT]
IMULI TT,1000.
SPECPRO INTSLP ;MUST PROTECT THIS IN CASE OF INTERRUPTS
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
JRST TRUE
IFN SAIL*<QIO-1>,[
ALARMCLOCK: EXCH A,B
JUMPE A,SALCK0 ;TECHNICALLY NOT NECESSARY, BECAUSE (CAR NIL) = (CDR NIL) = NIL, BUT...
SKIPN (A)
JRST SALCK0
MOVEI TT,SAILJOB
MOVEM TT,71
MOVEM B,ACLKTYP
CAIE B,Q$RUNTIME
JRST ALCK1
JSP T,FLTSKP ;RUN TIME IN MICROSECONDS,
CAIA ; ACCURATE TO 4. USEC JIFFIES
JSP T,IFIX
IDIVI TT,1000. ;RUN TIME IN MILLISECONDS
MOVE D,TT
SETZ TT,
RUNTIME TT,
ADD TT,D
MOVEM TT,SAIALK
MOVEI TT,SAILINT ;THIS IS WHERE INTERRUPT ROUTINE IS
HRRZM TT,SAILJOB+2
IMSKST SAINTER ;MASK THEM ON
CLKINT 36 ;SET INTERVAL
ALCK4: JRST TRUE
ALCK1: CAIE B,QTIME
JRST ALCK0
JSP T,FLTSKP ;REAL TIME IN SECONDS,
JSP T,M6. ; ACCURATE TO SIXTHS
FMPRI TT,(6.0)
JSP T,IFIX
MOVEM TT,SAIALK ;NUMBER OF CLKINTS TO GO
MOVEI TT,S2ILIN2
HRRZM TT,SAILJOB+2
IMSKST SAINTER ;MASK ON
CLKINT 12 ;ENABLE & GO
JRST ALCK4
SALCK0: IMSKCL SAINTER ;UNMASK
CLKINT 0 ;DISABLE
JRST FALSE
M6.: IMULI TT,6. ;NOTE: DOUBLE SKIP RETURN
JRST 2(T)
] ;END OF IFN SAIL*<QIO-1>
IFN ITS,[
ALARMCLOCK:
EXCH A,B
SETO TT,
CAIE B,Q$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,QTIME
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,(30.0)
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
M30.: IMULI TT,30. ;NOTE: DOUBLE SKIP RETURN
JRST 2(T)
] ;END OF IFN ITS
IFE QIO,[
LISTEN: PUSH P,CFIX1
IT$ .LISTEN R,
IFN D10,[
SKIPE LINMODE
SA% SKIPA TT,[SKPINL]
SA$ SKIPA TT,[INWAIT]
SA% MOVSI TT,(SKPINC)
SA$ MOVSI TT,(INSKIP)
XCT TT
TDZA R,R
MOVEI R,1
] ;END OF IFN D10
SKIPE PBFTY
AOS R
HRRZ A,RDTYBF
JSP T,LNG1A
ADD TT,R
POPJ P,
] ;END OF IFE QIO
; ENDCODE [SLEEP/LISTEN/ALARM]
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.$X AND FRIENDS
10% DEPURE: JSR POFF ;DEPURIFY A PAGE
10% REPURE: JSR POFF ;REPURIFY A PAGE
SBSYM: JSR POFF ;FIND SUBR NAME (ADR IN RH OF .)
VCLSYM: JSR POFF ;FIND ATOM FOR VC (ADR IN LH OF .)
VCSYM: JSR POFF ;FIND ATOM FOR VALUE CELL
TLSYM: JSR POFF ;PRINT ST ENTRY OF LEFT HALF OF A CELL
TSYM: JSR POFF ;ST ENTRY OF RIGHT HALF
PLSYM: JSR POFF ;PRINT LEFT HALF OF A CELL
PSYM: JSR POFF ;PRINT RIGHT HALF OF A CELL
POF: JSR POFF ;PRINT ARG (POINTER AT LOC 40)
TOF: JSR POFF ;ST ENTRY OF ARG (POINTER IN 40)
10% P%OFF: JSR POFF ;FOR % TYPEOUT MODE IN DDT
10% PPTBL: JSR POFF ;PRINT OUT PURTBL
10% PPPAG: JSR POFF ;PRINT OUT ACTUAL PAGE STATUSES
;POFF: 0
PSYM1: SETOM PSYMF
MOVEM T,PSMTS ;P.$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
HRRZ T,POFF
10% CAIG T,REPURE+1
10% JRST PUFY
PUSH P,CPSYMX
JSP T,ERSTP
MOVEM P,ERRTN
MOVEI T,40
MOVEM T,PS.S
HRRZ R,POFF
IFN ITS,[
MOVEI T,THIRTY+7
CAIN R,P%OFF+1
MOVEM T,PS.S
CAIG R,POF
.BREAK 12,PSMST
] ;END OF IFN ITS
IFN D10,[
HRRZ T,.JBDDT"
HRRZ T,@6(T) ;WHAT A KLUDGE! 6?!!
CAIG R,POF
MOVEM T,PS.S
] ;END OF IFN D10
JSP T,SPECBIND
TTYOFF
TAPWRT
Q% LPTON
IFN MOBIOF, DISPON
V.RSET
10% V.NOPOINT ;FOR PPTBL
IFN USELESS, SETZM TYOSW
Q% MOVE T,VLINEL
Q% MOVEM T,VCHRCT
IFN QIO,[
HRRZ AR1,V%TYO ;UPDATE OUR NOTION OF THE
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)
] ;END OF IFN QIO
;;; FALLS THRU
;;; FALLS IN
HRRZ T,POFF
10% CAIL T,PPTBL+1
10% JRST PPTBL1
MOVE T,PSMTS ;AT THIS POINT ALL ACS WILL HAVE BEEN
MOVE R,PSMRS ; RESTORED SO THAT MOVE A,@ WILL WORK.
MOVE A,PSMS
Q$ MOVE AR1,PSMS+AR1-A
MOVE A,@PS.S ;THUS THIS STUFF WORKS IF . IS AN AC.
HRRZ T,POFF
10% CAIN T,P%OFF+1
10% 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$X
PSYMQ: MOVEI A,TRUTH ;RETURN POINT TO GET OUT OF PSYM1
JRST ERR2
PSYMX: MOVEI T,LPSMTB
MOVE R,PSMS-1(T)
MOVEM R,@PSMTB-1(T)
SOJN T,.-2
MOVE T,PSMTS
MOVE R,PSMRS
SETZM PSYMF
CPSYMX: POPJ P,PSYMX
IFN ITS,[
PSYMP1: TLNN A,-1 ;LISP MODE TYPEOUT - HACK TWO HALVES
JRST PSYMP
PUSH P,A
HLRZ A,A
PUSHJ P,PRIN1
MOVEI A,", ;SEPARATE HALVES WITH ",,"
REPEAT 2, PUSHJ P,TYO
POP P,A
TLZ A,-1
JRST PSYMP
] ;END OF IFN ITS
PSYMSB: MOVEI B,(A)
PUSHJ P,ERRADR ;ERRADR DOES ALL THE DIRTY WORK!
JRST PSYMQ
Q% FCN.H: ;FAKE CONTROL-H INTERRUPT FROM DDT
Q$ FCN.B: ;FAKE CONTROL-B INTERRUPT FROM DDT
Q% SKIPN INHIBIT
SKIPE NOQUIT
POPJ P,
SKIPGE INTFLG
POPJ P,
IFE QIO,[
PUSH P,A
MOVEI A,1
PUSHJ P,UINT
JRST POPAJ
] ;END OF IFE QIO
;;; FALLS THRU
;;; FALLS IN
IFN QIO,[
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,
] ;END OF IFN QIO
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
IFN ITS,[
PUFY: .BREAK 12,PSMST
MOVEI TT,@PS.S ;PURIFY THE PAGE THAT . IS ON
MOVE TT+1,TT ;USED BY DP≠X AND RP≠X
MOVEI C,-REPURE(T)
JSP R,IP0
JRST PSYMX
] ;END IFN ITS
;;; 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 .
10% TBLPUR=PUSHJ P,PPTBL ;PRINT OUT PURTBL IN NICE FORM
10% PAGPUR=PUSHJ P,PPPAG ;PRINT OUT ACTUAL STATUS OF PAGES
Q% HH=PUSHJ P,FCN.H ;FAKE CONTROL-H INTERRUPT FROM DDT
Q$ BB=PUSHJ P,FCN.B ;FAKE CONTROL-B INTERRUPT FROM DDT
10% DP=PUSHJ P,DEPURE ;DEPURIFY PAGE . IS ON
10% RP=PUSHJ P,REPURE ;REPURIFY PAGE . IS ON
; ENDCODE [P.$X]
SUBTTL T.$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
IFN ITS,[
PPTBL1: MOVEI F,-PPTBL-1(T) ;0 => TBLPUR$X, 1 => PAGPUR$X
JSP T,0PUSH-4
MOVE R,[440200,,PURTBL]
MOVEI T,1
PPTBL2: ILDB TT,R
JUMPE F,PPTBL6
.CALL PPTBL8
.VALUE
ASH TT,-41
TRZ TT,1
SKIPGE TT
MOVEI TT,1 ;0=NONX, 1=IMPURE, 2=PURE
PPTBL6: MOVEI A,(FXP)
SUBI A,(TT)
AOS (A)
MOVEI A,"0(TT)
PUSHJ P,TYO
TRNE T,7
AOJA T,PPTBL2
TRNN T,30
JRST PPTBL3
MOVEI A,40
PUSHJ P,TYO
TRNE T,10
AOJA T,PPTBL2
PUSHJ P,TYO
PUSHJ P,TYO
JRST PPTBL4
PPTBL3:
Q$ PUSH FXP,T
PUSHJ P,ITERPRI
Q$ POP FXP,T
CAIN T,NPAGS
JRST PPTBL5
PPTBL4: TLZ R,770000
AOJA T,PPTBL2
PPTBL5: MOVEI R,TYO
MOVNI TT,4
PPTBL7: EXCH TT,(FXP)
JUMPE TT,PPTBL9
MOVEI A,↑I
PUSHJ P,TYO
MOVE A,(FXP)
ADDI A,"4
PUSHJ P,TYO
%NEG%
MOVEI C,10.
PUSHJ P,PRINI2
POP FXP,TT
PPTBL9: AOJL TT,PPTBL7
JRST PSYMQ
PPTBL8: SETZ
SIXBIT \CORTYP\
1000,,-1(T)
402000,,TT
] ;END OF IFN ITS
SUBTTL PURIFY≠G 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 \LISP\] ;AND FINALLY, NEW SNAME
MOVEM T,SYSSNM
MOVEI T,FEATEX ;SPLICE 'EXPERIMENTAL' INTO FEATURES LIST
MOVEM T,FEATURES
] ;END IFN ITS
IFN ITS+D20,[ ;DOESN'T REALLY WORK FOR D10 YET
PURIFY: JRST NOTINIT ;CLOBBERED BY INIT TO "SETO AR1,"
; SETO AR1, ;FOR PURIFY$G FROM DDT
MOVE P,[-LFAKP-1,,FAKP-1]
Q% MOVE FXP,[-LFAKFXP-1,,FAKFXP-1]
JRST FPURF7
FPURF2: SETZB TT,PRSGLK ;ZERO PURE SEGMENT AOBJN PTR
MOVE R,[NPFFS,,NPFFS+1] ;ZERO PURE FREE STORAGE COUNTERS
SETZM NPFFS
BLT R,NPFFY2
MOVSI R,400000
SETZM LDXLPC ;CLEAR # WORDS FREE SO ALWAYS GRAB NEW SET
; OF SEGMENTS THE FIRST TIME A LINK IS NEEDED
; START NEW LIST OF SEGMENTS
SETOM LDXPFG ;SET PURE FLAG
20$ MOVSI 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,400(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,POP1J
MOVE T,[STDMSK]
MOVEM T,IMASK
Q$ IT$ MOVE T,[STDMS2]
Q$ IT$ MOVEM T,IMASK2
IFN ITS,[
.VALUE [ASCIZ \:≠PURIFIED≠
\]
JRST .-1
] ;END OF IFN ITS
IFN D20,[
HRROI 1,[ASCIZ \:$PURIFIED$
\]
PSOUT
HALTF
JRST .-3
] ;END OF IFN D20
;;; IFN ITS+D20
;;; VARIOUS PAGE FLUSHING AND PURIFYING ROUTINES FOR PURIFY
;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
SETZ 3,
PMAP
] ;END OF IFN D20
JRST IPUR2
;MAKE PAGE WRITABLE
IPUR4:
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
] ;END OF IFN ITS
IFN D20,[
MOVE 1,TT
RPACS
TLC 2,(PA%RD+PA%EX+PA%CPY)
TLNN 2,(PA%RD+PA%EX+PA%CPY+PA%WR)
JRST IPUR2
MOVE 1,TT
TLNN 2,(PA%EX)
TRZ 1,-1 ;?
MOVE 2,TT
MOVSI 3,(PM%RD+PM%EX+PM%CPY)
PMAP
] ;END OF IFN D20
JRST IPUR2
;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
] ;END OF IFN ITS
IFN D20,[
MOVE 1,TT
RPACS
TLNN 2,(PA%PEX)
HALT
TLNN 2,(PA%WR+PA%CPY)
JRST IPUR2
MOVE 1,TT
MOVE 2,TT
MOVSI 3,(PM%RD+PM%EX) ;ONLY RIGHT TO READ, NOT WRITE
PMAP
] ;END OF IFN D20
JRST IPUR2
IFN ITS,[
IPUR9: SETZ
SIXBIT \CORTYP\
1000,,400(R)
402000,,T
] ;END IFN ITS
] ;END OF IFN ITS+D20
IFN EDFLAG,[
$INSRT EDITOR ;KLUDGY BINFORD EDITOR
]
SUBTTL PURE COPY OF THE READ SYNTAX TABLE
-1,,0 ;FOR NEWRD WILL POINT TO MACRO CHAR LIST
RSXTB2: PUSH P,CFIX1
JSP TT,1DIMF
NIL ;SHOULD NEVER ACTUALLY CALL
0
RCT0:
IFE NEWRD,[ ;OLD VERSION OF PURE READTABLE
IFN SAIL,[
400500,,0 ;NULL IS IGNORED
REPEAT 10, 2,,1+.RPCNT ;SAIL CHARS
500500,,↑I ;TAB
500500,,↑J
400500,,↑K
400500,,↑L
400500,,↑M ;CR
REPEAT 22, 2,,↑N+.RPCNT ;SAIL CHARS
] ;END IFN SAIL
.ELSE,[
REPEAT 10, 400500,,.RPCNT ;↑@ ↑A ↑B ↑C ↑D ↑E ;↑F ↑G
Q% 400500,,↑H ;↑H
Q$ 2,,↑H ;↑H
500500,,↑I ;TAB
REPEAT 7, 400500,,↑J+.RPCNT ;↑J ↑K ↑L ↑M ↑N ↑O ↑P
Q% 400500,,↑Q ;↑Q
Q$ 405540,,QCTRLQ ;↑Q
400500,,↑R ;↑R
Q% 400500,,↑S ;↑S
Q$ 405540,,QCTRLS ;↑S
REPEAT 7, 400500,,↑T+.RPCNT ;WORTHLESS
2,,33 ;ALT MODE
REPEAT 4, 400500,,↑\+.RPCNT ;WORTHLESS
] ;END IFE SAIL
500500,,40 ;SPACE
REPEAT 6, 2,,"!+.RPCNT ;! " # $ % &
404500,,QRDQTE ;'
440500,,"( ;(
410500,,") ;)
2,,"* ;*
10,,"+ ;+
500500,,", ;,
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 ;[ \ ]
22,,"↑ ;↑
62,,"← ;←
; 2,,"` ;ACCENT GRAVE
404500,,QBACKQM ;BACKQUOTE
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
SA$ Q% REPEAT 574, 400500,,204+.RPCNT ;SAIL CONTROL CHARACTERS
IFN SAIL*QIO,[
REPEAT 74, 400500,,204+.RPCNT ;SAIL CONTROLIFIED FUNNY CHARACTERS
REPEAT 2, 400500,,300+.RPCNT ;↑@ ↑A
604500,,302 ;↑B
REPEAT 5, 400500,,300+.RPCNT ;↑C ↑D ↑E ↑F ↑G
2,,300+↑H ;↑H
500500,,300+↑I ;TAB
REPEAT 7, 400500,,300+↑J+.RPCNT ;↑J ↑K ↑L ↑M ↑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*QIO
] ;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 + 11 ;TAB
REPEAT 21, RS.BRK+RS.SL1+RS.SL9 + 12+.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 + 41+.RPCNT ;! " # $ % &
RS.BRK+RS.SL1+RS.SL9+RS.MAC + 47 ;'
RS.BRK+RS.SL1+RS.SL9+RS.LP + 50 ;(
RS.BRK+RS.SL1+RS.SL9+RS.RP + 51 ;)
RS.XLT + 52 ;*
RS.SL1+RS.SGN + 53 ;+
RS.BRK+RS.SL1+RS.SL9+RS.WSP + 54 ;,
RS.SL1+RS.SGN+RS.ALT + 55 ;-
RS.BRK+RS.SL1+RS.SL9+RS.DOT+RS.PNT + 56 ;.
RS.BRK+RS.SL1+RS.SL9+RS.SLS + 57 ;/
REPEAT 10., RS.SL1+RS.DIG + 60+.RPCNT ;0 - 9
RS.XLT + 72 ;:
RS.BRK+RS.SL1+RS.SL9+RS.MAC+RS.ALT + 73 ;;
REPEAT 5, RS.XLT + 74+.RPCNT ;< = > ? @
REPEAT 4, RS.LTR + 101+.RPCNT ;A-D
RS.LTR + RS.SQX + 105 ;E
REPEAT 21., RS.LTR + 106+.RPCNT ;F-Z
REPEAT 3, RS.XLT + 133+.RPCNT ;LBRACK BSLASH RBRACK
RS.ARR+RS.XLT + 136 ;↑
RS.ARR+RS.ALT+RS.XLT + 137 ;←
RS.XLT + 140 ;ACCENT GRAVE
REPEAT 4, RS.LTR + 101+.RPCNT ;A-D L.C.
RS.LTR+RS.SQX + 105 ;E L.C.
REPEAT 21., RS.LTR + 106+.RPCNT ;F-Z L.C.
REPEAT 4, RS.XLT + 173+.RPCNT ;LBRACE VBAR RBRACE TILDE
RS.BRK+RS.SL1+RS.SL9+RS.RBO + 177 ;RUBOUT
RS.BRK+RS.SL1+RS.SL9+RS.SLS + 57 ;PSEUDO SLASH
RS.BRK+RS.SL1+RS.SL9+RS.LP + 50 ;PSEUDO (
RS.BRK+RS.SL1+RS.SL9+RS.RP + 51 ;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
;;; 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
IFN MOBIOF,[
$INSRT MOBYIO ;MOBY I/O PACKAGE
]
$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
EVALHOOK:
JSP TT,LWNACK
LA23,,QEVALHOOK
IFE FUNAFL,[
MOVEI D,QEVALHOOK
CAME T,XC-2
JRST WNALOSE
] ;END OF IFE FUNAFL
POP P,B
AOS D,T
JSP T,SPECBIND
0 B,VEVALHOOK
IFN FUNAFL,[
CAME D,XC-2
JRST EVNH1
POP P,A
POP P,B ;MUST STICK A CUNBIND ON THE STACK BELOW ARGS
PUSH P,CUNBIND
PUSH P,B
PUSH P,A
PUSHJ FXP,AEVAL ;SKIP RETURN
JFCL ;FUNNY SKIP RETURN
JRST EVNH0
] ;END OF IFN FUNAFL
EVNH1: POP P,A
PUSH P,CUNBIND
EVNH0: SKIPN V.RSET ;EVALUATE, BYPASSING HOOK CHECK
JRST EV0 .SEE STORE
JRST EVAL0
OEVAL:
IFN FUNAFL,[
JSP TT,LWNACK ;"EXTERNAL" EVAL - LSUBR (1 . 2)
LA12,,QOEVAL ;MAY TAKE ALIST AS SECOND ARG
CAMN T,XC-2
PUSHJ FXP,AEVAL ;SKIP RETURN
] ;END OF IFN FUNAFL
IFE FUNAFL,[
AOJE T,.+3
MOVEI D,QOEVAL
SOJA T,WNALOSE
] ;END OF IFE FUNAFL
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
;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
EV0A: MOVE AR1,(A) ;FUNCTION ON 0(P), ADDRESS TO JRST TO IN (TT)
HLRZ T,(A)
SKOTT T,LS
2DIF JRST (TT),EVTB2-1,QLIST .SEE STDISP
HLRZ TT,(T)
CAIN TT,QLAMBDA
JRST EXP3
IFN FUNAFL,[
CAIE TT,QFUNARG
CAIN TT,QLABEL
JRST EXP3
] ;END OF IFN FUNAFL
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
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
REPEAT HNKLOG, .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
REPEAT HNKLOG, .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
MOVEI B,(R)
HLRZ T,(A)
PUSHJ P,IIAL
HLRZ T,(A)
SETO R,
JRST EE2A
EFM: CAIE C,ILIST ;FOUND MACRO
EFMER: LERR EMS21 ;IMPROPER USE OF MACRO
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
MOVNI T,1
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 EV3A
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
;;; (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,MEMQ
POP P,B
JUMPE A,CPOPJ
PUSHJ P,IPROGN
JRST TRUE
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:
IFN FUNAFL,[
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
] ;END OF IFN FUNAFL
IFE FUNAFL,[
MOVEI D,QAPPLY
JRST WNALOSE
] ;END OF IFE FUNAFL
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
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)
;;; 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: HRRZ A,(C) ; NEXT PDL SLOT HAS FUNCTION IN RH,
SKOTT A,LS
2DIF JRST (TT),APTB1-1,QLIST ;FN IS NOT LIST STRUCTURE
HRRZ B,(A)
HLRZ A,(A)
CAIN A,QLAMBDA
JRST IAPLMB ;IT'S A LAMBDA
IFN FUNAFL,[
CAIN A,QFUNARG
JRST APFNG ;IT'S A FUNARG (MORE GOOD GRIEF!)
CAIN A,QLABEL
JRST APLBL ;IT'S A LABEL (SUPER GOOD GRIEF!)
] ;END OF IFN FUNAFL
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)
TLNN B,-1
HRLM B,(C) ;PUTS FUNCTION NAME IN LH IF NOT THERE
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
REPEAT HNKLOG, .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 ;IGNORE MACROS
IAPIAL ;AUTOLOAD
IAPIAL: HRRI R,(B)
JRST IAPAT2
IAPIA1: JUMPL R,IAP2J
JUMPE R,IAP2
MOVEI B,(R)
MOVEI T,(A)
PUSHJ P,IIAL
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,(T)
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)
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
IFE FUNAFL, JRST QF2A
IFN FUNAFL, 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: HLRZ A,@(P)
JSP D,SETCK
HRRZ B,@(P)
JUMPE B,SETWNA
PUSH P,A ;ATOM TO BE SETQD
HLRZ A,(B)
HRRZ B,(B)
MOVEM B,-1(P)
PUSHJ P,EVAL
POP P,AR1
JSP T,.SET
SKIPE (P)
JRST SET1
JRST POP1J
$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
SKIPE A ;DON'T BIND NIL
PUSHJ P,BIND ;BIND!
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)
JUMPGE R,DO5F
SKOTT A,SY ;A SINGLETON SYMBOL
JRST DO5Q1 ;NOPE. TRY FURTHUR CHECKS
HRLZS A ;TREAT AS (<SYMBOL> NIL)
EXCH A,(P)
JRST DO5C
DO5Q1: SKOTT A,LS
JRST DOERR
HLRZ A,(B)
JSP T,SPATOM
JRST DOERR
TLNE R,200000
JRST DO5F
HRRZ A,(B)
JUMPE A,DO5F
HRRZ A,(A)
JUMPN A,DO5ER
DO5F: HLRZ A,(B)
HRLM A,(P)
HRRZ A,(B)
JUMPL R,DO5E
JUMPE A,DO5B
HRRZ A,(A)
JUMPN A,DO5D
DO5B: POP P,A
SOJA R,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)
CAIE A,TRUTH
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.
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: JSP TT,FWNACK
FA12,,QCATCH
PUSHJ P,CATHRO
JSP TT,CATPS1
HLRZ A,(B)
PUSHJ P,EVAL
MOVEI B,NIL ;CAUSE MOST RECENT CATCH TO BE THROWN
JRST THROW1
;(*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 T,
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
;OLD STYLE MACLISP THROW, UNEVALUATED TAG
THROW: JSP TT,FWNACK
FA12,,QTHROW
PUSHJ P,CATHRO
PUSH P,A
HLRZ A,(B)
PUSHJ P,EVAL
POP P,B
JRST THROW1
;(*THROW TAG VAL) SUBR
.THROW: EXCH A,B ;THROW1 WANTS TAG IN B, VAL IN A
JRST THROW1 ;THEN DO A THROW
CATHRO: MOVE B,A
HRRZ A,(A)
JUMPE A,CPOPJ
HLRZ A,(A)
POPJ P,
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 [MATCHING EXPRESSION NOT FIXNUM OR 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: CAIN A,TRUTH ;IF T THEN AN 'OTHERWISE' CLAUSE
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 PARELLEL COMPILER MACROS
;;; CURRENTLY: PUSH, POP, DISPLACE
;(DEFUN PUSH FEXPR (X) (SET (CADR X) (CONS (EVAL (CAR X)) (EVAL (CADR X)))))
$PUSH: JSP TT,FWNACK
FA2,,Q$PUSH
PUSH P,A ;SAVE THE ARGUMENT POINTER
HLRZ A,(A) ;GET THE THING TO BE PUSHED
CAIE A,TRUTH
PUSHJ P,EVAL ;EVALUATE IT
EXCH A,(P) ;SAVE THE RESULT, AND GET THE ARG POINTER
HRRZ A,(A)
HLRZ A,(A) ;GET THE SECOND ARGUMENT
$PUSH2: JSP T,LATOM
JRST $PUSH1 ;WRONG TYPE SECOND ARG
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,
$PUSH1: WTA [STACK NOT ATOM - PUSH!]
JRST $PUSH2
;(DEFUN POP FEXPR (X)
; (PROG2
; (COND ((NULL (CDR X))
; (CAR (EVAL (CAR X))))
; (T (SET (CADR X) (CAR (EVAL (CAR X))))))
; (SET (CAR X) (CDR (EVAL (CAR X))))))
$POP: JSP TT,FWNACK
FA12,,Q$POP
PUSH P,(A) ;SAVE THE FIRST CONS OF THE ARGUMENT LIST
HLRZ A,(A) ;GET THE STACK POINTER
$POP4: SKOTT A,SY ;THE STACK POINTER MUST BE A SYMBOL
JRST $POP1
CAIE A,TRUTH
PUSHJ P,EVAL ;AND GET THE STACK
PUSH P,(A) ;SAVE THE 1ST CONS OF THE STACK ON P
HRRZ A,-1(P) ;GET THE PLACE TO POP INTO
JUMPE A,$POP2 ;NOT SPECIFIED, JUST RETURN THE TOP OF STACK
HLRZ A,(A) ;GET THE CAR
$POP5: SKOTT A,SY
JRST $POP3 ;MUST HAVE A SYMBOL AS THE TARGET OF THE POP
HLRZ AR1,(P) ;CAR OF STACK IS VALUE
JSP T,.SET1 ;SET THE SYMBOL
$POP2: HRRZ AR1,(P) ;NOW CDR THE STACK AND REPLACE INTO STK-PTR
HLRZ A,-1(P)
JSP T,.SET1
HLRZ A,(P) ;RETURN THE CAR OF THE STACK
POPI P,2
POPJ P,
$POP1: WTA [STACK POINTER MUST BE A SYMBOL - POP!]
HRLM A,(P)
JRST $POP4
$POP3: WTA [TARGET OF POP MUST BE A SYMBOL - POP!]
JUMPE A,$POP2
JRST $POP5
;(DEFUN DISPLACE (X Y)
; (AND (ATOM X) (ERROR '|NOT A LIST - DISPLACE| X))
; (COND ((ATOM Y)
; (RPLACA X 'PROGN)
; (RPLACD X (NCONS Y)))
; (T (RPLACA X (CAR Y))
; (RPLACD X (CDR Y)))))
DISPL0: WTA [NOT A LIST - DISPLACE!]
DISPLACE:
MOVEI TT,(A) ;INSURE FIRST ARG IS A LIST
LSH TT,-SEGLOG
SKIPL ST(TT) ;IS IT?
JRST DISPL0
MOVEI TT,(B) ;CHECK WHETHER SECOND ARG IS LIST OR NOT
LSH TT,-SEGLOG
SKIPL ST(TT) ;LIST?
JRST DISPL1 ;NOPE, SPECIAL TREATMENT
HLRZ AR1,(B) ;CAR Y
HRLM AR1,(A) ;RPLACA X
HRRZ AR1,(B) ;CDR Y
HRRM AR1,(A) ;RPLACD X
POPJ P, ;RETURN X
DISPL1: MOVEI C,QPROGN
HRLM C,(A) ;(RPLACA <1ST-ARG> 'PROGN)
PUSH P,A ;NOW (NCONS <2ND ARG>)
MOVEI A,(B)
PUSHJ P,$NCONS
HRRM A,@(P) ;(RPLACD <1ST-ARG> (NCONS <2ND-ARG>))
POP P,A ;RETURN FIRST ARG
POPJ P,
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
PROG2: MOVEI D,QPROG2
CAMLE T,XC-2
JRST WNALOSE
HRLI T,-1(T)
ADD T,P
MOVE A,2(T)
MOVEM T,P
POPJ P,
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
IFN QIO,[
$INSRT QIO ;NEW MULTIPLE FILE I/O FUNCTIONS
] ;END OF IFN QIO
SUBTTL INTERRUPT HANDLERS
PGBOT INT
IFE QIO,[
IFN ITS,[
;;; ***** MOBY INTERRUPT ROUTINES *****
PINBL: .SPICLR,,XC-1 ;SUSET WORD TO ENABLE INTERRUPTS
PIHOLD: .SPICLR,,R70 ;SUSET WORD TO GAG INTERRUPTS
INT0: EXCH A,INT ;BIG DISPATCH !!!
JUMPL A,INT4
TRZE A,IB.TTY ;1
JRST TTYINT
INT1: TLNN A,(IB.TIMR) ;100000,,0
TLNE A,(IB.ALARM) ;200000,,0
JRST TIMOUT
TRZE A,IB.PDLO ;200000
JRST PDLOV
TRZE A,IB.IOC ;400
JRST IOERR
INT2: TRZE A,IB.ILOP ;I ASSUME THAT THERE WILL NEVER BE ANY
JRST ERRILO ;TWO OF THESE INTERRUPTS TOGETHER -
TLZE A,(IB.PUR) ; ILGL OPERATION, PURE PAGE TRAP, OR
JRST PURPGI ; ILGL MEM REFERENCE, PARITY ERROR
TRZE A,IB.MPV ;20000
JRST INT3
TLZE A,(IB.PARITY)
JRST PARERR
INT4: SKIPN UPIINT
NOINT: .VALUE
JRST @UPIINT
INT3: HRRZ A,IPCLOK
CAIN A,UBD1 ;ALLOW SPDL RESTORATION TO TAKE PLACE
JRST INTEX1 ;EVEN IF ONE SLOT IS CLOBBERED
JRST INTILM
TTYINT: MOVEM A,INTSV
MOVEI A,TYIC
.ITYIC A,
JRST INTEX
JSR CNTROL
INTEX: SKIPE A,INTSV
JRST INT1
INTEX1: MOVE A,INT
.DISMIS IPCLOK
CN.Z: .RESET TYIC, ;SO SUPERIOR WON'T SEE ↑Z AS INPUT
.VALUE [ASCII \:VK \]
JRST 2,@CNTROL
;;; IFN ITS
TIMOUT: MOVEM A,INTSV
SKIPN VALARMCLOCK ;INT FROM FRUSTRATED ALARMCLOCK
JRST TIMO1
MOVEI A,INTEX
MOVEM A,CNTROL ;THIS IS A HACK
MOVE A,INTSV
TLZN A,(IB.ALARM)
JRST TIMO6
MOVEM A,INTSV
MOVSI A,400000 ;REAL TIME INT, SO SHUT OFF CLOCK
.REALT A,
SKIPA A,[QTIME,,3]
TIMO3: MOVE A,[Q$RUNTIME,,3]
SKIPL UNREAL ;MAYBE CLOCK INTS AREN'T PERMITTED NOW
JRST UINT1
MOVSS A ;IF SO, QUEUE IT UP
MOVSM A,UNRRUN-Q$RUNTIME(A)
JRST INTEX
TIMO6: TLZN A,(IB.TIMR)
JRST INTEX ;????
MOVEM A,INTSV
JRST TIMO3
TIMO1: TLNN A,(IB.ALARM)
JRST TIMO7
MOVSI A,400000
.REALT A,
MOVE A,INTSV
TIMO7: TLZ A,(IB.TIMR+IB.ALARM) ;NO ALARM FNCTION, SO FLUSH INTERRUPTS
JUMPN A,INT1
JRST INTEX1
] ;END OF IFN ITS
;;; IFE QIO
IFN D10,[
;;; DECSYSTEM-10 INTERRUPT ROUTINES
INT0: PIOF
MOVEM A,INT ;SAVE REG A
MOVE A,.JBCNI"
TRZE A,IB.PDLOV ;PDL OVERFLOW?
JRST PDLOV ;YEP
TRZE A,IB.MPV ;ILL MEM REF?
JRST PURPGI
NOINT: HALT ;I DONT KNOW WHAT THIS IS!
;BEFORE COMING HERE, .JBTPC OR EQUIVALENT MUST HAVE BEEN COPIED TO IPCLOK
INTEX: JRST 2,@IPCLOK ;STANDARD EXIT
TTYINT: AOSLE UPCOK
JRST 2,@.JBOPC"
MOVEM A,INT
MOVE A,.JBOPC"
MOVEM A,IPCLOK
TTYIN0:
SA% OUTSTR [ASCIZ \ππ?↑\]
IFN SAIL,[
SETO A,
CALLI A,400111
OUTSTR [ASCIZ \?↑\] ;FOO ON SAIL CHARACTER SET
] ;END OF IFN SAIL
INCHRW A
ANDI A,37 ;MASK DOWN TO CONTROL CHAR (E.G. C => ↑C)
SETZM UPCOK
JSR CNTROL
SKIPLE UPCOK
JRST TTYIN0
MOVE A,INT
SETOM UPCOK
JRST 2,@IPCLOK
UPCHK: SKIPLE UPCOK
JRST UPCHK1
SETOM UPCOK
POPJ P,
UPCHK1: SETZM UPCOK
MOVEM A,INT
POP P,IPCLOK
JRST TTYIN0
CN.Z: SKIPE A,.JBDDT" ;RETURN TO DDT IF IT EXISTS
JRST (A)
EXIT 1, ;OTHERWISE CRAP OUT TO MONITOR
ALTP: JRST 2,@CNTROL ;WHEN IN DDT, "ALTP$G" IS GOOD
] ;END OF IFN D10
IFN SAIL,[
SAILINT:IMSKCL SAINTER ;UNMASK
UWAIT ;WAIT FOR UUOS TO FINISH
DEBREAK ;INTERRUPT LEVEL BECOMES USER LEVEL
MOVEM TT,ATTSV ;SAVE TT
MOVE TT,SAILJOB+1
MOVEM TT,SAICONT ;CONTINUE ADDRESS IN RIGHT PLACE
CLKINT 0 ;DISABLE
SETZ TT,
RUNTIME TT, ;WHAT TIME IS IT?
CAMGE TT,SAIALK
JRST SADISMIS ;FOO. NOT LONG ENOUGH
SAHACKIT: SKIPN VALARM
JRST SADISMIS
MOVE TT,ATTSV ;PUT BACK TT
MOVEM A,AINT ;DO IT
HRLZ A,ACLKTYP
HRRI A,3
SKIPN UNREAL
JRST S2RUN
MOVSS A
MOVSM A,UNRRUN-Q$RUNTIME(A)
SADMS0: MOVE A,AINT
SADISMIS: MOVE TT,ATTSV
CLKINT 36 ;ENABLE
INTUUO 0,SAINTER ;MASK ON & RETURN
S2RUN: JSR INTWAIT
JRST .+2
JRST SADMS0
PUSH P,AINT
PUSHJ P,UINT
JRST POPAJ
S2ILIN2:IMSKCL SAINTER
UWAIT
DEBREAK
MOVEM TT,ATTSV
MOVE TT,SAILJOB+1
MOVEM TT,SAICONT
CLKINT 0
SOSLE SAIALK ;TIME YET?
JRST .+2 ;NO
JRST SAHACKIT ;SURE
MOVE TT,ATTSV
CLKINT 12
INTUUO 0,SAINTER
] ;END OF IFN SAIL
] ;END OF IFE QIO
IFN QIO,[
IFN ITS,[
;;; 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
STDMSK=%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
INTGRP MEMERR,PIRQC=%PIPAR+%PIWRO+%PIMPV+%PIILO,DF1=STDMSK+%PIMAR-%PIPDL ;MEMORY AND OPCODE ERRORS
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 QIO
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:
;;; ↑C, ↑D, ↑G, ↑R, ↑T, ↑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==0 ;GENERATE STANDARD INTERRUPT MASK
IRP FOO,,[.ICPOV,.ICILI,.ICIRD,.ICIWR,.ICNXP,.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
1,,$PDLOV
0
0 ;DATA ERROR FILE
0 ? 0 ? 0
2,,INTILO ;ILL OP
2,,INTIRD ;ILL READ
2,,INTIWR ;ILL WRITE
0 ? 0 ? 0 ? 0
2,,INTNXP ;NON-EXISTANT PAGE
0 ;23 -- SHOULD BE USABLE BUT PERHAPS BUG IN V3
REPEAT 13, 3,,INTASS+<6+.RPCNT>*3 ;REMAINING ASSIGNABLE INTERRUPTS
;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 1,22 ;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
MOVEI 1,.FHSLF ;DEFER ALL INTERRUPTS
SETO 2,
DIC
SETOM INTALL ;FLAG THAT ALL INTERRUPTS HAVE BEEN DISABLED
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
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 22,[
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 QIO
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: INTMSK R70 ;MASK OFF ALL INTERRUPTS
SETOM INTALL ;FLAG THAT ALL INTERRUPTS HAVE BEEN DISABLED
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
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
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
;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 ? 0 ? 0 ? 0 ;NOT CURRENTLY ENABLED AT ANY TIME
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 11,INTERR ;INTERRUPT ERROR, THIS CANNOT HAPPEN
PARINT ;PARITY ERROR
CLOCKI ;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 HACN'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
;;; IFN QIO
;;; 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?
IT$ .LOSE
IFN <D10+D20>, HALT
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
here's the code to make the setq t nil etc work right. The sos ipspc(f)
should be out for SAIL, we get the right address.
;;; IFN QIO
;;; 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
SA% 10$ SOS IPSPC(F) ;MAKE PC POINT TO OFFENDING INSTRUCTION
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 $XLOSE
TLNE R,(%PI<PAR>) ;WAS IT A PARITY ERROR?
JRST PARERR
TLNE R,(%PI<WRO>) ;WRITE INTO READ-ONLY?
JRST PURPGI
TRNE R,%PI<ILO> ;ILLEGAL OPERATION?
JRST ILOPER
TRNN R,%PI<MPV> ;MEMORY PROTECT VIOLATION?
.VALUE ;NO??? WHAT HAPPENED???
CAIE D,UBD1 ;LET SPECPDL RESTORATION HAPPEN
JRST MPVERR ; EVEN IF ONE SLOT GOT CLOBBERED
AOS IPSPC(F) ;BUMP PC PAST OFFENDING INSTRUCTION
JRST INTXIT
MPVERR: SKIPA D,[UIMMPV]
PURERR: MOVEI D,UIMWRO
JRST MEMER5
ILOPER: SKIPA D,[UIMILO]
PARERR: MOVEI D,UIMPAR
MEMER5: HRRZ R,INTPDL ;MACHINE ERROR! WHAT TO DO?
CAIN R,INTPDL+LIPSAV ;IF THE ERROR HAPPENED WITHIN AN INTERRUPT SERVER,
SKIPN VMERR ; OR IF USER SUPPLIED NO ERROR FUNCTION,
JRST MEMER7 ; CRAP OUT BACK TO DDT
MOVEI D,100000(D)
HRL D,IPSPC(F)
PUSHJ FXP,$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
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
;;; IFN QIO
IFN ITS,[
;;; I/O CHANNEL ERROR HANDLER
IOCERR: MOVE F,INTPDL
MOVE R,FXP
SKIPE GCFXP
MOVE FXP,GCFXP
PUSH FXP,R
.SUSET [.RBCHN,,R]
SKIPN R
JRST IOCER8
.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 TH⊃ 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
;;; IFN QIO
;;; 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
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 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 ;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
PUSH FXP,V%TYI ;SAR ADR ON STACK
] ;END IFN D10+D20
IFN ITS,[
HRRZ D,CHNTB(R)
MOVE D,TTSAR(D)
TLNE D,TTS<IO>
JRST CHNI5
.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,↑C ;↑C (SETQ ↑D NIL)
SETZM GCGAGV
CAIN R,↑D ;↑D (SETQ ↑D T)
HRRZM D,GCGAGV
CAIN R,↑G ;↑G (↑G) ;QUIT
JRST CN.G
CAIN R,↑R ;↑R (SETQ ↑R T)
HRRZM D,TAPWRT
CAIN R,↑T ;↑T (SETQ ↑R NIL)
SETZM TAPWRT
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
;;; IFN QIO
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,$IWAIT ;CALLS UISTAK AND SKIPS IF IN GC
JRST XUINT ;RUNS USER INTERRUPT
JRST INTXIT
IFN ITS,[
CHNI5: HRRZ D,CHNTB(R) ;CHECK OUT FILE ARRAY
HRRZ D,TTSAR(D)
SKIPN FO.EOP(D) ;SKIP IF ENDPAGEFN
JRST CHNI8
MOVEI D,200000+<2*FO.EOP+1> ;2.8 => RANDOM FILE INTERRUPT
JRST CHNI4A ;**MORE** => ENDPAGEFN GETS RUN
CHNI8: SUB FXP,R70+1
JRST INTXIT
];END IFN ITS
;;; ROUTINE TO STACK UP INTERRUPT IN INTAR -- USED BY CHNINT, JOBINT, AND FNYINT
CHNI4C: MOVE F,UNREAR ;STACK UP INTERRUPT IN THE
CAIL F,LUNREAR ; NOINTERRUPT QUEUE
JRST TMDAMI ;OOPS! TOO MANY DAMN INTERRUPTS!
MOVE F,[400000+LUNREAR-1,,UNREAR+LUNREAR-2]
CHNI4H: POP F,1(F)
TLNE F,377777
JRST CHNI4H
MOVEM D,UNREAR+1
AOS UNREAR
HRRZ F,INTPDL
JRST 2(R)
;;; IFN QIO
; COMMENT FOR @ CHANGE
IFN JOBQIO,[
;;; INTERRUPT FROM INFERIOR PROCEDURE(S)
JOBINT: MOVE F,INTPDL
MOVE D,IPSWD2(F)
MOVE R,FXP
SKIPE GCFXP ;IF IN GC, FXP MAY BE
MOVE FXP,GCFXP ; SCREWED UP
PUSH FXP,R
MOVN R,D
AND R,D ;R GETS LOWEST SET BIT
ANDCM D,R ;D GETS ALL OTHER BITS
SKIPE D
.SUSET [.SIIFPIR,,D] ;PUT ANY OTHER BITS BACK (THEY'RE DEFERRED)
MOVE D,R
JFFO D,.+1
MOVNS R ;-22 < R < -11
SKIPN D,JOBTB+21(R)
.VALUE ;NO JOB ARRAY???
HRRZ R,TTSAR(D)
SKIPN J.INTF(R)
JRST INTXIT ;NO INTERRUPT FUNCTION - IGNORE INTERRUPT
MOVSI D,(D)
TRO D,200000+<2*J.INTF+1>
SKIPGE UNREAL
JSP R,CHNI4C ;GORP! (NOINTERRUPT T)
PUSHJ FXP,$IWAIT
JRST XUINT
JRST INTXIT
] ;END OF IFN JOBINT
;;; IFN QIO
;;; 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 TT,TTSAR(TT)
PUSHJ FXP,CLRO3 ;ALSO DO (CLEAR-OUTPUT T)
POP FXP,TT
POP FXP,T
JRST CHNI2
IFN D20,[
CN.Z: HALTF ;RETURN TO SUPERIOR (MAY BE IDDT)
ALTP: JRST CHNI2 ;ALPT$G PROCEEDS
] ;END IFN D20
IFN D10,[
CN.Z: SKIPE R,.JBDDT ;ANY DDT IN CORE?
JRST (R)
EXIT 1, ;RETURN TO MONITOR IF NO DDT, CONT CONTINUES
ALTP: JRST CHNI2 ;PROCEED ON ALTP$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≠
\]
JRST CHNI2
CKI2I: SETZ
SIXBIT \RESET\
400000,,TT
] ;END IFN ITS
CTRLG: HRROI D,-3 ;↑G - SUBR 0
IT$ .SUSET [.SPICLR,,R70] ;DISABLE THE INTERRUPT SYSTEM FOR NOW
IFN D10+D20, PUSHJ P,DALINT ;DISABLE ALL INTERRUPTS
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,$IWAIT
SKIPA D,[CKI0]
JRST CHNI2 ;CAN'T PROCESS QUIT NOW
MOVEM D,IPSPC(F) ;IF CAN QUIT NOW, ARRANGE FOR SERVER
JRST CHNI2 ; TO RETURN TO INTERRUPT CHECKER
CN.G1: SETZM UNREAR ;KILL STACKED UNREAL INTERRUPTS
EXCH D,UNRC.G ;ELSE STACK UP AN UNREAL
TRNE D,1 ; ↑G OR ↑X INTERRUPT
MOVEM D,UNRC.G ;DON'T LET A ↑X DISPLACE A ↑G
JRST CHNI2
;QMARK -- THIS IS HERE SO BAKTRACE WILL FIND IT AS LAST SUBR (ARGG!!)
QMARK: MOVEI A,QM
POPJ P,
;;; IFN QIO
IFN ITS,[
;;; REAL TIME ALARMCLOCK
REALCLOCK:
MOVSI R,400000 ;SHUT CLOCK BACK OFF
.REALT R,
MOVEI R,QTIME
JRST RCLOK1
;;; RUNTIME ALARMCLOCK
RUNCLOCK:
MOVEI R,Q$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$RUNTIME(R) ;STACK UP INTERRUPT
JRST INTXIT
IFN USELESS,[
FNYINT: MOVE F,INTPDL ;COMMON HANDLER FOR FUNNY INTERRUPTS
MOVE D,FXP
SKIPE GCFXP
MOVE FXP,GCFXP
PUSH FXP,D
MOVE R,(R)
SKIPN (R)
JRST INTXIT ;EXIT IF NO USER HANDLER
HLRZ D,R
CAIE D,UIFTTR ;SPECIAL HACK FOR TTY-RETURN
JRST FNYIN0
HRRZ R,IPSPC(F) ;GET PC OF INTERRUPT
CAIE R,TYICAL ;INTERRUPTED FROM CANONICAL INPUT WAIT?
CAIN R,TYICA1
HRLI D,Q$IN ;YES, ARG TO INT FUN IS 'IN
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
;;; IFN QIO
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
;;; IFN QIO
;;; 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 INTERRUPTS≠↔CONTIN⊗
\]
.LOSE
] ;END OF IFN ITS
10$ OUTSTR [ASCIZ \TOO MANY DEFERRED INTERRUPTS\]
10$ EXIT 1,
10$ JRST .-1
] ;END OF IFN QIO
IFN d20,[
HRROI 1,[ASCIZ \
?Too many deffered interrupts
\]
HALTF
] ;END IFN D20
IFE QIO,[
;;; PURE PAGE TRAP HANDLER
PURPGI:
IT$ MOVEM A,INTSV ;TRIED TO WRITE INTO A PURE PAGE
10$ AOS A,.JBTPC
10$ MOVEM A,IPCLOK
HRRZ A,IPCLOK ;GET JUST ADDRESS (NO PC FLAGS)
CAIN A,STQPUR+1
JRST PPGI5
MACROLOOP NPURTR,ZZP,*, ;ZZP MACROS DEFINE WHAT PLACES HAVE HANDLERS
JUMPGE A,PPGI2
PPGI3: HRRM A,IPCLOK
JRST INTEX
PPGI2: MOVEI A,4 ;LOSE LOSE - A BAD ERROR
JRST PPGI4
PPGI5: EXCH A,INT ;REMEMBER WHICH VALUE CELL WE TRIED TO GRONK
MOVEM A,STQLUZ
MOVE A,[TIRPATE,,NIL]
MOVEM A,(SP)
MOVE A,STQLUZ
EXCH A,INT
JSR INTWAIT ;LET SPDL GET CAUGHT UP, IF LAMBDA OR SET BINDING
SKIPA T,STQLUZ ;ERROR HANDLER WANTS LOCATION IN T
JRST PPGI2 ;IN CASE INTWAIT SKIPS
PPGI6: HRRZI A,NILSETQ ;TRIED TO PUT A VALUE PROPERTY ON NIL
JRST PPGI3
] ;END OF IFE QIO
IFN QIO,[
; PUTCODE [QIO PURPGI]\20+2*NPURTR,INT,GC
;;; PURE PAGE TRAP HANDLER
;;; COMES HERE WITH LOSING PC IN D.
.SEE MEMERR
PURPGI: CAIN D,STQPUR
JRST PPGI5
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: 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
; ENDCODE [QIO PURPGI]
] ;END OF IFN QIO
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
IFE USELESS, NUINT0==:1 .SEE GCP6Q6
IFN USELESS, NUINT0==:5 .SEE GCP6Q6
;;; 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
;;; FOR NON-QIO, WE DON'T PUSHJ HERE FROM PI LEVEL, UNLESS WE KNOW
;;; THAT GC IS NOT IN PROGRESS (THUS WE HAVE A PDL).
;;; FOR QIO, WE NORMALLY DON'T PUSHJ HERE AT ALL FROM PI LEVEL!
;; (THINK ABOUT HOW TO SIMPLIFY THE CODE HERE.)
UINT:
Q% SKIPN @UINTTB(A) ;SERVICE USER INTERRUPT
Q% JRST FALSE
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>*QIO,[
POP FXP,OIMASK
POP FXP,IMASK
] ;END IFN <D10+D20>*QIO
SKIPL (FXP)
JRST UINTX1
Q% PION
IT$ Q$ .SUSET [.SPICLR,,XC-1]
IT$ Q$ .SUSET [.SDF1,,R70]
IT$ Q$ .SUSET [.SDF2,,R70]
IFN <D10+D20>*QIO, PUSHJ P,REAINT
UINTX1:
IFN QIO+ITS, SUB FXP,R70+1 ;GET RID OF REENABLE INTERRUPTS FLAG
Q$ POP FXP,R .SEE UINTPU
10$ Q% POP FXP,UPCOK
JRST CHECKI ;PDL-OVERFLOW MAY HAVE BEEN STACKED
Q% .SEE PDLHAK
Q$ .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
IFN ITS+QIO,[
Q$ PUSH FXP,R ;SAVE R FOR UISTAK, ETC.
PUSH FXP,T
IFN <D10+D20>*QIO,[
PUSH FXP,IMASK ;SAVE APRENB MASKS
PUSH FXP,OIMASK
] ;END IFN <D10+D20>*QIO
IT$ .SUSET [.RPICLR,,T]
IFN D10+D20, MOVN T,INTALL ;GET PI STATE FROM INTERNAL WORD
IFN <D10+D20>*QIO,[
EXCH T,-2(FXP)
SKIPGE -2(FXP)
] ;END IFN <D10+D20>*QIO
IFE <D10+D20>*QIO, EXCH T,(FXP)
IFE <D10+D20>*QIO, SKIPGE (FXP)
IT$ Q% .SUSET PIHOLD
IT$ Q$ .SUSET [.SPICLR,,R70]
IFN <D10+D20>*QIO, PUSHJ P,DALINT ;DISABLE ALL INTERRUPTS
] ;END OF IFN ITS+QIO
10$ Q% PUSH FXP,UPCOK
10$ Q% SETZM UPCOK
POPJ P,
IFE QIO,[
YESIN1: POP P,UISTAK ;CROCK, CROCK, CROCK!!!
;UISTAK: 0
UISTK1: AOSGE INTFLG ;DONT WORRY, INTERRUPTS ARE SHUT OFF
JRST UINT4 ;USES QITD AND QITR, BUT NOT QITC
SETZM INTFLG
MOVEM D,QITD
MOVEM R,QITR ;STACK UP AN INTERRUPT IN THE DELAYED INTERRUPT ARRAY
AOS R,INTAR ;BECAUSE USER INTERRUPTS ARE NOT NOW ENABLED
CAILE R,LINTAR
LERR EMS12 ;TOO MANY INTERRUPTIONS
JRST UISTK3
UISTK2: MOVE D,INTAR(R)
MOVEM D,INTAR+1(R)
UISTK3: SOJG R,UISTK2
MOVSM A,INTAR+1
MOVE R,QITR
MOVE D,QITD
UINT4: SOS INTFLG
MOVEI A,0
JRST 2,@UISTAK
] ;END OF IFE QIO
IFE QIO,[
;;; SAVE WORLD - INCLUDES STATE OF PICL, VALUES OF ACCS 2 THRU 13
;;; AND MOST WRITABLE SYSTEM TEMPS. THEN RUN THE ASSOCIATED ROUTINE.
;;; INTERRUPTS MUST BE TURNED OFF WITH PIOF BEFORE COMING HERE.
YESINT: SKIPN NOQUIT
SKIPE INHIBIT
JRST YESIN1
UINT0: HRRZS (P)
SKIPGE UINTTB(A)
HRROS (P)
HRR A,@UINTTB(A) ;ARG IN LH, TABLE INDEX IN RH CONVERTED INTO INT FUN
PUSH P,A
UINT26: HLRZ A,P
CAIL A,LUINF
IT$ JRST UINT27
UINT42: HLRZ A,FXP
CAIL A,-<LSWS+6>
10$ JRST XPOV
.ELSE,[
JRST UINT43
UINT55: HLRZ A,SP
CAIL A,-4
JRST UINT56
] ;END OF .ELSE
PUSH FXP,UNREAL
SKIPGE -1(P)
SETOM UNREAL
BG$ PUSH FXP,BNV1
ADD FXP,[LSWS+5,,LSWS+5]
PUSH P,[$UIFRAME]
PUSH P,FXP ;SAVE PDLS SO THAT IF FRETURN WANTS TO BREAK OUT
HRLM FLP,(P) ;OF A USER INTERRUPT, HE CAN DO SO CORRECTLY
PUSHJ FXP,SAV5M1
PUSH P,40 ;SAVE INTERPRETED ACS AND STUFF ON PDL TO GC PROTECT IT
LUINF==-<NACS-1>-1-2 ;LOCATION OF USER INTERRUPT FUNCTION ON PDL - WHERE A WENT
MOVEI A,-<LSWS+5>+1(FXP)
HRLI A,T
BLT A,-LSWS(FXP) ;SAVE NON-INTERPRETED ACS
MOVEI A,-<LSWS>+1(FXP)
HRLI A,SWS
BLT A,(FXP) ;SAVE SUPER-WRITABLE STUFF
JSP T,SPECBIND
0 NIL,TYIMAN ;EVIL VILLIANS, WE BIND TYI-MAN
0 NIL,TMBBC ; AND FORCE HIM TO DO OUR WILL!
0 NIL,LISAR
SETZM INTSV
SETZM PA4
IFN USELESS, SETZM TYOSW
SETZM INHIBIT
SETZM EOFRTN ;DO NOT SETZM CATRTN! GJS WANTS TO
SETOM RRDF ; THROW THROUGH USER INTERRUPTS
SETOM ERRSW
MOVEI A,LUINF+1(P)
MOVEM A,UIRTN
HLRZ A,LUINF(P)
HRRZS LUINF(P)
PION
CALLF 1,@LUINF(P) ;APPLY INTERRRUPT FUNCTION
;FALLS THROUGH
;FALLS IN
;;; IFE QIO
PIOF
MOVEM A,LUINF(P) ;SETUP FOR RETURN VALUE
PUSHJ P,UNBIND ;RESTORE TYIMAN ETC.
UINT0X: HRLI A,-<LSWS+5>+1(FXP) ;RESTORE WORLD
HRRI A,T
BLT A,T+4
HRLI A,-<LSWS>+1(FXP)
HRRI A,SWS
BLT A,SWS+LSWS-1
SUB FXP,[LSWS+5,,LSWS+5]
BG$ POP FXP,BNV1
POP P,40
PUSHJ FXP,RST5M1
SUB P,R70+2 ;KNOCK OFF PDLS AND UIFRAME MARKER
POP FXP,A ;OLD STATE OF UNREAL
SKIPL -1(P) ;IF INTERRUPT TABLE DIDN'T HAVE BIT 4.9
JRST POPAJ ; ON, MUSTN'T ATTEMPT TO RESTORE UNREAL
EXCH A,UNREAL ;WELL, WE WANT TO RESTORE IT. WAS IT ON
JUMPE A,POPAJ ; JUST NOW? IF NOT, RETURN.
SKIPE UNREAL ;DID WE JUST TURN IT OFF BY RESTORING IT?
JRST UINT0Z ;NO, IT'S STILL ON - RETURN.
UINT0N: HRRZ A,-1(P) ;IS THE CHECKU ROUTINE ITSELF CALLING ME?
CAIL A,ENOINT ; DON'T WANT TO GET STUCK IN INFINITELY
JRST UINT0Q ; RECURSIVE CALLS.
CAIL A,NOINTERRUPT
JRST POPAJ
UINT0Q: PUSH FXP,F ;WELL, WE NEED TO RUN ANY DELAYED INTERRUPTS
SKIPE UNREAL
JRST UINT0Y
PUSHJ P,CHECKQ ;HACKISH ENTRY INTO CHECKU
UINT0V: POP FXP,F
JRST POPAJ
UINT0Y: PUSHJ P,CHECKZ ;HACKISH ENTRY INTO CHECKU
JRST UINT0V
UINT0Z: SKIPG UNREAL
JRST POPAJ
JUMPG A,POPAJ
JRST UINT0N
IFN ITS,[
UINT27: MOVE A,[LUINF,,P]
JSR PDLHAK
JRST UINT26
UINT43: MOVE A,[LSWS+6,,FXP]
JSR PDLHAK
JRST UINT42
UINT56: MOVE A,[4,,SP]
JSR PDLHAK
JRST UINT55
] ;END OF IFN ITS
] ;END OF IFE QIO
IFN QIO,[
;;; 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$ .SUSET [.SPICLR,,XC-1]
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
BG$ PUSH FXP,BNV1
MOVSI R,-LSWS
PUSH FXP,SWS(R)
AOBJN R,.-1
JSP T,SPECBIND ;MUST SPECBIND LISAR
LISAR
SETZM PA4
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
IT$ .LOSE
IT% HALT
REPEAT 3, PUSH FXP,R70 ;RANDOM SLOTS FOR NUMERIC ARGS;
; ; ALSO 4.9 OF TOP ONE => RETURN VALUE MATTERS
UIXPUSH==:5+1+BIGNUM+LSWS+3 ;AMOUNT OF STUFF PUSHED ON FXP
UISWS==:-<LSWS+3>+1 ;WHERE SWS STARTS WHEN SAVED ON FXP
UISAVT==:UISWS-6-BIGNUM ;WHERE ACCUMULATOR T GETS SAVED
PUSH P,[$UIFRAME] ;FRAME MARKER AND PDLS SAVED
PUSH P,FXP ; SO THAT THROW AND FRETURN WIN
HRLM FLP,(P) .SEE UIBRK
PUSHJ FXP,SAV5 ;SAVE ARGUMENT ACS AND 40 ON
PUSH P,40 ; REGPDL FOR GC PROTECTION
UIFRM==-2-NACS ;LOCATION OF FRAME ON REGPDL
UISAVA==UIFRM+2 ;LOCATION OF AC A ON REGPDL
MOVEI A,UIFRM(P)
MOVEM A,UIRTN
MOVSI AR2A,(CALLF 1,)
HLRZ A,D ;GET FIRST ARG FOR INTERRUPT FN
TRZN D,400000 ;DECODE INTERRUPT TYPE
JRST UINT30
HRRZM D,(FXP) ;TTY INPUT INTERRUPT CHAR
MOVEI R,(D)
MOVE TT,TTSAR(A)
JSP D,TTYICH ;FETCH INTERRUPT FN
MOVSI AR2A,(CALLF 2,)
HRRI AR2A,(R)
MOVEI B,(FXP) ;SECOND ARG IS CHARACTER
JRST UINT31
;;; IFN QIO
UINT30: TRZN D,200000
JRST UINT32
MOVEI TT,(D) ;RANDOM FILE INTERRRUPT
ROT TT,-1
HRR AR2A,@TTSAR(A) ;FETCH INTERRUPT FUNCTION
SKIPL TT
HLR AR2A,@TTSAR(A)
UINT31: HRROS UIFRM-1(P) ;ASYNCHRONOUS INTERRUPT
JRST UINT40
UINT32: TRZN D,100000
JRST UINT33
HRRZM A,-1(FXP)
MOVEI A,QODDP(D) ;MACHINE ERROR
MOVEI B,(FXP)
MOVEI C,-1(FXP)
MOVEI AR1,-2(FXP)
MOVSI AR2A,(CALLF 4,)
HRR AR2A,VMERR
JRST UINT40
UINT33: LDB TT,[110200,,D] ;BITS 2.2-2.1 ARE CLASS
ANDI D,777 ;1.9-1.1 ARE SUBTYPE
XCT UINT90(TT) ;FETCH INTERRUPT FUNCTION
XCT UINT91(TT) ;SPECIAL HACKS
UINT40: SKIPGE UIFRM-1(P)
SETOM UNREAL
IT$ .SUSET [.SPICLR,,XC-1] ;***** ENABLE INTERRUPTS *****
IT$ .SUSET [.SDF1,,R70]
IT$ .SUSET [.SDF2,,R70]
IFN D10+D20, PUSHJ P,REAINT ;RE-ENABLE INTERRUPTS
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
IT$ .SUSET [.SPICLR,,R70] ;***** DISABLE INTERRUPTS *****
IFN D10+D20, PUSHJ P,DALINT ;DISABLE ALL INTERRUPTS
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,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,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
IT$ .SUSET [.SPICLR,,XC-1] ;RE-ENABLE INTERRUPTS
IFN D10+D20, PUSHJ P,REAINT ;RE-ENABLE INTERRUPTS
JRST POPAJ
Q$ 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 ;??
] ;END OF IFN QIO
CKI0: PUSH FXP,D
HRRZ D,INTFLG
CAIN D,-1
JRST CKI1 ;DELAYED USER INTERRUPT
Q% PIOF
Q$ IT$ .SUSET [.SPICLR,,R70]
IFN <D10+D20>*QIO, PUSHJ P,DALINT ;DISABLE ALL INTERRUPTS
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,[
IT$ Q% .RESET TYIC,
IT$ Q% .RESET TYOC,
IFN QIO,[
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 QIO
] ;END OF IFN ITS+D20
10$ CLRBFO
10$ CLRBFI
Q% SETZM PBFTY
Q% SETZM RDTYBF
CKI3:
IFN ITS,[
IFE QIO,[
.SUSET [.RDF1,,A]
JUMPE A,CKI3B
.SUSET [.SAMASK,,A]
.SUSET [.SDF1,,R70]
] ;END OF IFE QIO
] ;END OF IFN ITS
CKI3B: TRNN D,2
SKIPE PSYMF
RQITR: LERR [SIXBIT \QUIT!\] ;SO ERROR OUT FOR ↑X
IFN QIO*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 QIO*USELESS*ITS
Q$ IT$ .SUSET [.SPICLR,,XC-1]
IFN <D10+D20>*QIO, PUSHJ P,REAINT ;RENABLE INTERRUPTS FOR UNWIND HANDLERS
PUSHJ FXP,ERRPOP
Q$ IT$ .SUSET [.SPICLR,,R70]
IFN <D10+D20>*QIO, PUSHJ P,DALINT ;DISABLE ALL INTERRUPTS
IFN QIO*USELESS*ITS,[
TRNE T,%PIMAR ;ERRPOP PRESERVES T
.SUSET [.SMARA,,SAVMAR]
] ;END OF IFN QIO*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:
Q% POP FXP,D ;RETURN TO SERVICE THE DELAYED INTERRUPT
SKIPE INHIBIT ;BUT NO SERVICE WHEN INHIBIT = -1
Q% POPJ P,
Q$ JRST POPXDJ
PUSHJ P,UINTPU
SETZM INTFLG
PUSH P,A
PUSH P,A
HLLOS INHIBIT
SKIPG A,INTAR
LERR EMS13 ;LOST USER INTERRUPT
CKI1A:
Q% MOVS A,INTAR(A)
Q% MOVSM A,(P) ;FOR GC PROTECTION
Q$ MOVS D,INTAR(A)
Q$ 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
Q% JRST UINTEX
Q$ PUSHJ P,UINTEX
Q$ JRST POPXDJ
IFE QIO,[
SUBTTL OLD I/O CONTROL CHARACTER ROUTINES
;CNTROL: 0
CNTRL1: CAIG A,36 ;NO INTERRUPT CHAR USABLE WITH ASCII > 036
XCT CNTBL(A)
JRST 2,@CNTROL
HRLI A,TRUTH ;SKIPS => WANTS T IN VALUE CELL
HLRZM A,@CNTBL(A)
JRST 2,@CNTROL
;;; ********** TABLE OF CONTROL CHAR ACTIONS **********
CNTBL: JRST CN.AT ;↑@
JRST CN.A ;↑A
IT$ SKIPA LPTON ;↑B
10$ JFCL ;↑B
SETZM GCGAGV ;↑C
SKIPA GCGAGV ;↑D
IFE D10, JRST CN.E ;↑E
IFN D10, JFCL
IFN MOBIOF, JRST CN.F ;↑F
IFE MOBIOF, JFCL
JRST CN.G ;↑G
JRST CN.H ;↑H
JFCL ;UNUSED CONTROL CHARACTERS, ETC.
REPEAT 4, JFCL ;↑J-↑M
IFN MOBIOF,[
SKIPA DISPON ;↑N
JRST CN.O ;↑O
] ;END OF IFN MOBIOF
IFE MOBIOF, REPEAT 2, JFCL
JFCL ;↑P
SKIPA TAPRED ;↑Q
SKIPA TAPWRT ;↑R
SETZM TAPRED ;↑S
SETZM TAPWRT ;↑T
SETOM PAUSFL ;↑U
SETZM TTYOFF ;↑V
JRST CN.W
JRST CN.X ;↑X
IFN MOBIOF, JRST CN.Y ;↑Y
IFE MOBIOF, JFCL
JRST CN.Z ;↑Z
JFCL ;ALT-MODE NOT MADE INTERRUPT CHAR
JRST CN.34 ;↑\
JRST CN.34 ;[ ;↑]
JRST CN.34 ;↑↑
IFN .-CNTBL-37, WARN [CNTBL LOSSAGE]
;;; IFE QIO,
IFN ITS,[
CN.E: .CLOSE LPTC,
SETZM LPTON
SETZM LPTOPD
JRST 2,@CNTROL
] ;END OF IFN ITS
IFN MOBIOF,[
CN.O: JSR CLZDIS
JRST 2,@CNTROL
] ;END OF IFN MOBIOF
CN.W: HRLI A,TRUTH
HLRZM A,TTYOFF
IT$ .RESET TYOC, ;RESET TTY OUTPUT CHANNEL
10$ CLRBFO
10X WARN [TTY OUTPUT CLEAR IN TENEX]
JRST 2,@CNTROL
CTRLG: PIOF ;↑G - SUBR 0
MOVE A,[-3,,-3]
JRST CN.G0
CN.X: SKIPA A,[-6,,-2] ;ERRSETABLE (↑X) QUIT
CN.G: MOVE A,[-7,,-3] ;IMMEDIATE (↑G) QUIT
CN.G0: SKIPE UNREAL
JRST CN.G1
SETZM INTAR ;KILL ALL INTERRUPTS STACKED UP
HRREM A,INTFLG
HRR A,CNTROL ;IF CALL CAME FROM IOC, THEN DONT
TRC A,IOC2 ;WANT TO DO A RESET ON THE TYI CHANNEL
TRNE A,-1
CN.G2: HLREM A,INTFLG
JSR INTWAIT
PUSHJ P,CHECKI
JRST 2,@CNTROL
CN.G1: SETZM UNREAR
MOVEM R,QITR
HRRZ R,CNTROL
CAME A,[-3,,-3]
CAIN R,IOC2
JRST CN.G3
MOVE R,UNRC.G
CAME R,XC-3
HRREM A,UNRC.G
MOVE R,QITR
JRST 2,@CNTROL
CN.G3: MOVE R,QITR
JRST CN.G2
;;; IFE QIO
CN.A: HRLI A,TRUTH
HLRZM A,SIGNAL
TLZA A,-1 ;WHEN ↑A HAPPENS, AC A HAS 1 IN IT, AND ↑A INT NO. IS 2
CN.34: SUBI A,34-14.+1 ;CNTRL KEYS 34-36 ARE INT NOS. 14. TO 16.
AOJA A,UINT1
Q% CN.H: ;CONTROL-H BREAK
Q$ CN.B: ;CONTROL-B BREAK
MOVEI A,1 ;CURRENTLY, ALL CONTROL-KEY INTERRUPTS HAVE NIL AS ARG
UINT1:
CN.AT: SKIPN @UINTTB(A) ;FOR ↑@, A MUST HAVE HAD ZERO IN IT
JRST 2,@CNTROL
SKIPE UNREAL
JRST UINT1Q
Q% SETOM PAUSFL
UINT1R: JSR INTWAIT
JRST UINT1A ;NO SKIP MEANS RUNNING INTERRUPT NOW IS OK
INTW3: JRST 2,@CNTROL ;OTHERWISE, A USER PI HAS BEEN STACKED UP
;[UNLESS THERE IS A QUIT SIGNAL PENDING]
UINT1A: PUSH P,CNTROL
IT$ PUSH P,INT ;INT CONTAINS WHAT WAS IN A UPON ENTRY
IT$ PUSH P,CPOP1J ;TO INTERRUPT - THUS IS NOW GC PROTECTED
10$ PUSHJ P,UPCHK
10X WARN [TENEX USER INTERRUPT]
JRST UINT
UINT1Q: MOVEM R,QITR
MOVEI R,(A)
CAIN R,3 ;ALARMCLOCK
JRST UINT1S
Q% HRRZ R,CNTROL
Q% CAIN R,IOC2
Q% JRST UINT1S
MOVEM D,QITD
AOS R,UNREAR
CAIG R,LUNREAR
JRST UINT1U
SOS UNREAR
LERR EMS12 ;TOO MANY INTERRUPTIONS
UINT1T: MOVE D,UNREAR(R)
MOVEM D,UNREAR+1(R)
UINT1U: SOJG R,UINT1T
MOVEM A,UNREAR+1
MOVE D,QITD
MOVE R,QITR
JRST 2,@CNTROL
UINT1S: MOVE R,QITR
JRST UINT1R
] ;END OF IFE QIO
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
Q% ERRIOJ==:ERRBAD ;IOJRST IS FOR NEWIO ONLY
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
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
PUSH P,[UUOSE1]
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,[$APPLYFRAME]
MOVEM TT,-1(R) ;APPLYFRAME DONE
UUOS7K: MOVEM T,UUTSV
HRRZ R,UUOFN
PUSHJ P,ARGLCK
JRST UUOS2E
POP FXP,T
MOVEI A,0
JRST UUOXIT
UUOS2A: HLRZ TT,(T) ;*** ARRAY CALLED LIKE FSUBR
MOVEM TT,LISAR
MOVEI R,(TT)
MOVEI TT,IAPAR1
JRST UUOS2Q
UUOS2: HLRZ TT,(T) ;*** SUBR CALLED LIKE FSUBR
HRRZ R,UUOFN
UUOS2Q: MOVE T,40
TLNN T,1000
PUSH P,UUOH
TLNE T,(NCALL)
PUSH P,[UUONVL]
CAIN T,IAPAR1
PUSH P,LISAR
PUSH FXP,TT ;SUBR ADDR
CILIST: JSP TT,ILIST ;ILIST FORTUNATELY SAVES R
PUSHJ P,ARGCHK
JRST UUOS2E
JSP R,PDLARG
POP FXP,TT ;PRESERVE T FOR UUOBKG
CAIN TT,IAPAR1
POP P,LISAR
JSR UUOBKG
MOVEI T,(TT) ;BEWARE! LOOSE SUBR POINTER
JRST UUOXIT
UUOS1A: HLRZ TT,(T) ;*** ARRAY CALLED LIKE LSUBR
MOVEM TT,LISAR
MOVEI T,IAPAR1 ;HAIR SO INTERRUPTS WON'T SCREW US
EXCH T,UUTSV
JSP R,PDLARG ;SAVES TT
JSR UUOBKG ;ALSO SAVES TT, AND WANTS NOTHING ON PDLS
LDB R,[TTSDIM,,TTSAR(TT)]
MOVE TT,40
TLNN TT,1000
PUSH P,UUOH
TLNE TT,(NCALL)
PUSH P,[UUONVL]
MOVNI R,(R)
CAMN R,T
JRST UUOXT1
PUSH FXP,D
PUSHJ P,SAVX3
MOVEI D,2
JRST UUOE2
;;; PUTCODE [EXPR ← FSUBR]40
UUOS4: POP P,A ;*** FEXPR CALLED LIKE LSUBR
MOVN TT,UUTSV
JRST UUOS4A
UUF2N: SKIPA TT,40 ;*** NONATOMICFUN CALLED LIKE FSUBR
UUOS6: HLRZ TT,(T) ;*** EXPR CALLED LIKE FSUBR
MOVE R,40
TLZN TT,-1 ;UUF2N LEAVES LH OF T ↑= 0
HRL TT,R ;OTHERWISE GET SUBR EXPR NAME IN LH
TLNN R,1000
PUSH P,UUOH
TLNE R,(20←33) ;THE NCALL BIT
PUSH P,[UUONVL]
JSP R,UUOX4B
SKIPN V.RSET
JRST UUOS6Q
PUSH P,FXP ;IF IN *RSET MODE, MAKE
HRLM FLP,(P) ; UP AN EVAL FRAME (SEE EVAL
MOVEI C,(A) ; FOR FORMAT THEREOF)
HRRZ B,40
PUSHJ P,XCONS ;MUST CONS UP FAKE ARG TO EVAL
PUSH P,A
HRLM SP,(P)
PUSH P,[$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:
MOVE T,UUTSV
PUSH P,UUOH
PUSH P,A
PUSHJ P,SAVX5
PUSH FXP,40
IFN QIO,[
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
] ;END OF IFN QIO
IFE QIO, ERBPLOC==0
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
IFN QIO,[
ERP0D: SKIPN AR1,VMSGFILES
JRST ERP6A
JRST ERP0E
ERP0C: SKIPE AR1,TAPWRT
HRRZ AR1,VOUTFILES
JUMPN AR1,ERP0F
SKIPE TTYOFF
JRST ERP6A
JRST ERP0A
] ;END OF IFN QIO
ERP3: ILDB TT,ERBPLOC(FXP) ;QUOTE A CHAR
JRST ERP5
ERP4: ILDB TT,ERBPLOC(FXP) ;CONTROLLIFY A CHAR
ADDI TT,40
TRC TT,100
Q$ CAIE TT,↑M
JRST ERP5A
Q$ PUSHJ P,STRTYO
Q$ MOVEI TT,↑J
Q$ JRST ERP5A
ERP6:
IFN QIO,[
UNLOCKI ;DONE!
ERP6A: POP P,AR2A
POP P,AR1
] ;END OF IFN QIO
SUB FXP,R70+1 ;FLUSH BYTE PTR
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:
;CLEAR AND DISABLE INTERRUPT SYSTEM
IFN ITS,[
.SUSET [.SPICLR,,R70]
.SUSET [.SPIRQC,,R70]
.SUSET [.SIFPIR,,R70]
.SUSET [.ROPTION,,TT]
Q$ TLO TT,OPTINT+OPTOPC ;NEW-STYLE INTERRUPTS AND NO PC SCREWAGE
Q$ .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%
≠(..TAMP\
..TPER\≠1Q
..TAMP\P%
≠):VP /]
LISP17:
] ;END OF IFN ITS
10$ Q% SETZM UPCOK
IFN <D10+D20>*QIO, PUSHJ P,ENBINT ;ENABLE INTERRUPTS
;CONSIDER SHARING PAGES WITH OTHER JOBS
IFN USELESS*<1-D10>, JSP T,SHAREP
;RESET I/O SWITCHES
IT$ Q% SETZM LPTOPD ;LINE PRINTER CHANNEL
Q% SETZM UTOOPD ;UWRITE CHANNEL
Q% SETZM UTIOPD ;UREAD CHANNEL
IFN MOBIOF,[
SETZM FTVU ;FAKE TV
SETZM BVDOPD ;VIDISECTOR
SETZM NVDOPD
SETZM DISOPD ;340 DISPLAY
SETZM DISPON
] ;END OF IFN MOBIOF
IT$ Q% SETZM LPTON ;LINE PRINTER FLAG (↑B)
SETZM TAPWRT ;UWRITE FLAG (↑R)
SETZM TTYOFF ;TTY OUTPUT FLAG (↑W)
Q% MOVEI T,<↑C>←13 ;RESTORE VERY IMPORTANT ↑C AT END OF
Q% HRLZM T,UTIB+UTBSIZ ; UREAD BUFFER (IN CASE WAS CLOBBERED)
IFN EDFLAG, SETOM EDPRFL ;EDITOR'S PRINTOUT FLAG
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)
REPEAT HNKLOG,[
SKIPN HNSGLK+.RPCNT ;HACK TO AVOID CREATING
MOVEM A,FFH+.RPCNT ; UNNEEDED HUNK SEGMENTS
] ;END OF REPEAT 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
IFN ITS,[
MOVE TT,IUSN
Q% MOVEM TT,USN
Q% .SUSET [.SSNAM,,USN]
Q$ MOVEM TT,TTYIF2+F.SNM
Q$ MOVEM TT,TTYOF2+F.SNM
] ;END OF IFN ITS
IFN D10,[
SA% GETPPN T, ;FOR TOPS10/CMU, USE GETPPN
SA% JFCL ; (GETS PPN OF CURRENT JOB)
SA$ SETZ T, ;FOR SAIL, WE PREFER DSKPPN
SA$ DSKPPN T, ; (AS SET BY THE ALIAS COMMAND)
MOVEM T,USN
] ;END OF IFN D10
;TRY TO OPEN THE TERMINAL AS AN I/O DEVICE
IT$ Q% PUSHJ P,TTYOPN
Q$ PUSHJ P,OPNTTY
JFCL
IFN D10*<1-QIO>,[
MOVEI A,IN0+72. ;TTY ALREADY "OPEN" FOR D10,
MOVEM A,VLINEL ; BUT RESET LINEL
MOVEM A,OLINEL
] ;END OF IFN D10*<1-QIO>
;PERFORM INITIAL GARBAGE COLLECTION (BUT DON'T BOTHER TO COMPACT ARRAYS)
MOVSI T,111111
PUSHJ P,GCNRT
;INITIALIZE THE NAME OF THE MACHINE IN THE FEATURES LIST
IFN ITS,[
.CALL LISP43 ;GETS NAME OF ITS (AI, MC, ML, DM) IN TT
.VALUE
PUSHJ P,SIXATM ;CONVERT TO ATOMIC SYMBOL
HRLM A,MACHFT ;SET UP (STATUS FEATURES) FOR MACHINE NAME
] ;END OF IFN ITS
MOVE TT,BPSH ;IF BPEND SOMEHOW
CAMGE TT,@VBPEND ; IS LARGER THAN BPSH,
PUSHJ P,BPNDST ; SET IT EQUAL TO BPSH
10$ PUSHJ P,SIXJBN ;INITIALIZE TEMP FILE NAME D10NAM
;INITIALIZE (STATUS UDIR)
IFN D10,[
IFE SAIL,[
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
Q% PUSHJ P,SUNM2 ;CREATE A PPN OF APPROPRIATE FORMAT
Q$ MOVE TT,D ;PPNATM EXPECTS PPN TO BE IN AC TT
Q$ PUSHJ P,PPNATM
] ;END OF IFN D10
IFN ITS,[
MOVE TT,IUSN ;TAKE INITIAL SNAME
PUSHJ P,SIXATM ;CONVERT TO ATOMIC SYMBOL
] ;END OF IFN ITS
IFN D20,[
MOVE TT,[PNBUF,,PNBUF+1]
SETZM PNBUF ;CLEAR PNBUF
BLT TT,PNBUF+LPNBUF-1
LOCKI
GJINF ;GET JOB INFORMATION
MOVE 2,1 ;1 HAS LOGIN DIRECTORY NUMBER
MOVE 1,PNBP ;POINTER INTO PNBUF
DIRST ;GET EQUIVALENT ASCII STRING
HALT ;HMM...
SETZB 1,2
UNLOCKI
PUSHJ P,PNBFAT ;CONVERT PNBUF TO AN ATOM
] ;END IFN D20
MOVEM A,SUDIR
;INITIALIZE CURRENT UNIT
IFE QIO,[
PUSHJ P,NCONS
MOVEI B,QDSK
PUSHJ P,XCONS
MOVEM A,IUNIT ;INSTALL CURRENT USER IN IUNIT
] ;END OF IFE QIO
IFN MOBIOF, PUSHJ P,CLSSIX ;CLOSE THE PDP-6
;INITIALIZE VARIOUS BIZARRE TOP-LEVEL VARIABLES
MOVEI T,INR70 ;LOCATION OF LAP CONSTANTS
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:
Q% AOS UTIOPD ;HAIRY HAC TO READ, THE FIRST TIME
SETOM AFILRD ; AROUND, FROM THE .LISP. (INIT) FILE
MOVEI A,TRUTH
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
IFE QIO,[
TTYOPN: .OPEN TYIC,OTYIC
.LOSE 1000
.OPEN TYOC,OTYOC
.LOSE 1000
.CALL RTTYS
.LOSE 1400
TLO R,%TS<CLE+ACT+MOR>
MOVEM R,STTYSS
.CALL CNSGT1
.LOSE 1400
ANDI TT,777
IOR D,TT
MOVEM D,TTYDISP
MOVEM D,SRNLN1
MOVEI A,IN0(TT) ;A NUMBER FOR TTY TYPE
MOVEM A,VTTY ; (GUARANTEED NLISP INUM)
JSP T,WAKTTY
.CALL RSSBLK ;WANT TO LEAVE IN ACC TT THE WIDTH OF THE SCREEN IN CHARS
.LOSE
SUBI TT,1 ;LINE LENGTH RETURNED BY SYSTEM MAY BE 2 TOO LONG
SUBI D,1
SKIPE SRNLN1
MOVEM D,SRNLN1
CAILE TT,777 ;CONCEIVABLY THE LINEL IS SET HUGE
MOVEI TT,777
MOVEI A,IN0(TT) ;SET UP LINEL (GUARANTEED NLISP INUM)
MOVEM A,VLINEL
MOVEM A,OLINEL
POPJ P,
CNSGT1: SETZ
SIXBIT \CNSGET\
1000,,TYIC
2000,,TT
2000,,TT
2000,,TT
2000,,D
402000,,D
OTYIC: (SIXBIT \TTY\)
SIXBIT \.LISP.\
SIXBIT \INPUT\
OTYOC: (21+SIXBIT \TTY\)
SIXBIT \.LISP.\
SIXBIT \OUTPUT\
RSSBLK: SETZ
SIXBIT \RSSIZE\
1000,,TYIC
2000,,TT+1 ;SCREEN HEIGHT
402000,,TT ;SCREEN WIDTH (LINEL)
RTTYS: SETZ
SIXBIT \TTYGET\
1000,,TYIC
2000,,TT ;TTYST1 (WORD ONE CHARACTER BITS)
2000,,D ;TTYST2 (WORD TWO)
402000,,R ;TTYSTS
WAKTTY: .CALL STTYS
.VALUE
JRST (T)
STTYS: SETZ
SIXBIT \TTYSET\
1000,,TYIC
STTYS1 ;TTYST1
STTYS2 ;TTYST2
400000,,STTYSS ;TTYSTS
] ;END OF IFE QIO
] ;END OF IFN ITS
10$ WAKTTY: JRST (T)
IFN D20,[
SYMFIL: BLOCK 40 ;WHERE SYMBOLS WERE SAVED AT INIT TIME
] ;END IFN D20
;NOTHING ON THIS PAGE IS FLUSHED WHEN/IF LISP'S PURE PAGES ARE CLEARED FROM
; CORE DURING A SUSPEND
NFLSS::
20$ ENTVEC: JRST LISPGO ;TOPS-20 ENTRY VECTOR
;;; HERE IF NOT STOPPING AFTER A SUSPEND
SUSCON: MOVEI A,TRUTH ;RETURN T RATHER THAN NIL
MOVEM A,-1(FLP)
;;; FALL INTO LISPGO
LISPGO: SETOM AFILRD ;START HERE ON ≠G'ING
IT$ .SUSET GOL1 ;SET .40ADDR
IT$ .SUSET GOL2 ;GET INITIAL SNAME
Q% 10$ SETOM UPCOK ;TELL LISP ITS OK TOO
20$ RESET ;RESET OURSELVES ON STARTUP
JRST 2,@LISPSW ;ZEROS OUT PC FLAGS, AND TRANSFERS TO LISP
IFN D20,[
WARN [D20 CORRECT SHAREP]
SHAREP: JRST (T) ;FOR NOW, NULL CHECK FOR SHARING
]
IFN ITS,[
GOL1: .S40ADDR,,.+1
TWENTY,,FORTY
GOL2: .RSNAM,,IUSN
FLSLSP: .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 FLSPA1 ;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
FLSPA1: ASCIZ \:≠SUSPENDED≠
\
FLSPA3: ASCIZ \:≠LISP PURE PAGES FLUSHED AND SUSPENDED≠
\
FLSST: .CALL SYSFIL ;TRY TO FIND THE LISP
.VALUE FLSDIE ;DIE, DIE, DIE
JSP T,SHARP1 ;BEFORE STARTING MUST HAVE A REAL CORE IMAGE
SETZM SAWSP ;WE HAVE ALREADY MAPPED OURSELVES IN
JRST SUSP3
FLSDIE: ASCIZ \:≠LOSE!! CANNOT FIND PURQIO THAT THIS LISP WAS DUMPED FROM!≠
\
NOSHARE==JRST (T) ;DEPOSIT INTO SHAREP TO INHIBIT SHAREING
SHAREP: SKIPN SAWSP
JRST (T)
SETZM SAWSP
.CALL PURCHK
.VALUE
JUMPLE TT,(T)
.CALL SYSFIL
JRST (T)
SHARP1:
IFN 0,[
;THIS IS THE OLD CODE TO READ IN FROM THE DISK FILE.
.ACCESS TMPC,SHRL1
MOVE TT,SHRL2
.CALL PURPGS ;SHARE PURE CODE
.VALUE
.ACCESS TMPC,SHRL3
MOVE TT,SHRL4
.CALL PURPGS ;SHARE PURE DATA AREAS
.VALUE
] ;END IFN 0
IFN 1,[
.CALL SHRLOD ;LOAD ALL PURE PAGES FROM THE FILE
.LOSE 1400
] ;END IFN 1
.CLOSE TMPC,
JRST (T)
PURCHK: SETZ
SIXBIT \CORTYP\ ;GET TYPE FOR CORE BLOCK
1000,,PURCHK/PAGSIZ ;THE PAGE WE ARE ON
402000,,TT ;>0 READ-ONLY, <0 WRITABLE
SYSFIL: SETZ ;FOR OPENING UP FILE TO SHARE
SIXBIT \OPEN\
SYSCHN
SYSDEV
SYSFN1
SYSFN2
SETZ SYSSNM
SYSCHN: .UII,,TMPC
PURPGS: SETZ
SIXBIT \CORBLK\ ;HACK CORE BLOCKS
1000,,200000 ;GET READ-ONLY PAGES
1000,,-1 ;PUT THEM INTO *MY* PAGE MAP
,,TT ;AOBJN POINTER FOR PAGES, OR PAGE NUMBER
401000,,TMPC ;DISK FILE TO SHARE WITH
IFN 0,[
SHRL1: 2000+BPURPG
SHRL2: -NPURPG,,BPURPG/PAGSIZ
SHRL3: 2000+BPURFS-<NXVCSG+NXXZSG>*SEGSIZ
SHRL4: -NPURFS,,BPURFS/PAGSIZ
] ;END IFN 0
IFN 1,[
SHRLOD: SETZ
SIXBIT \LOAD\
MOVEI %JSELF ;MYSELF
MOVEI TMPC ;CHANNEL ON WHICH PURQIO/PURBIB IS OPEN'ED
SETZI 0 ;LOAD ONLY PURE PAGES
] ;END IFN 1
;ROUTINE TO PDUMP A FILE WITH INDIRECT SYMBOL TABLE POINTER INCLUDED
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,PURPTR ;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
NFLSE:
] ;END OF IFN ITS
SUBTTL JCL INITIALIZATION ROUTINE
20$ WARN [D20 JCL?]
IFN D10,[
JCLSET: SETZ D,
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
CAIN B,33
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
CAIE A,33
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
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
IFE QIO,[
;INTWAIT: 0
INTW0: MOVEM C,QITC ;.SUSET PIHOLD TO BE DONE BEFORE ENTERING
MOVEM D,QITD ; (INTERRUPT ENTRY IN EFFECT IS A PIHOLD)
MOVEM R,QITR
SKIPE WAITFL
JRST INTW4 ;BUSY DOING SFX HACK - GO STACK UP INTERRUPT
HLRZ C,NOQUIT ;IF IN GC, NEEDN'T CHECK SP - IT WILL
JUMPN C,INTW1 ; UNDOUBTEDLY BE IN STRANGE STATE ANYWAY
MOVE C,(SP) ;ALLOWS SPDL TO GET CAUGHT UP,
MOVEI D,(SP) ; OR CONSER TO FINISH HIS EXCH'S,
CAME D,ZSC2 ; BUT SKIPS 1 IF IN GC
CAMN C,SPSV ; (LH OF NOQUIT NONZERO)
JRST INTW1
INTSFX: SETOM WAITFL ;SET FLAG FOR SFX HACKERY
MOVEM A,WAITA ;SAVE A
MOVE A,INT
MOVE D,[JSR SPWR]
MOVSI R,-NSFC
MOVEM D,@SFXTBL(R) ;CLOBBER LOCATIONS MARKED BY SFX SO
AOBJN R,.-1 ; SFXPRO'ED ROUTINE WILL RETURN HERE
MOVE D,QITD ;RESTORE ACS
MOVE C,QITC
MOVE R,QITR
IFN ITS,[
.SUSET [.SDF1,,[<-1>#<IB.PDLOV+IB.MPV+IB.ILOP+IB.PUR>]]
.SUSET [.RDF2,,WAITD2] ;DEFER MOST NON-NASTY INTERRUPTS
.SUSET [.SDF2,,XC-1]
.DISMISS IPCLOK ;ENABLE INTERRUPTS IN CASE OF PDL OVERFLOW, ETC.
] ;END OF IFN ITS
10$ JRST 2,@IPCLOK
10X WARN [INTERRUPT RETURN IN TENEX]
;;; IFE QIO
;SPWR: 0
SPWR0: PIOF
IFN ITS,[
.SUSET [.SDF1,,R70]
.SUSET [.SDF2,,WAITD2]
] ;END OF IFN ITS
MOVEM R,QITR
MOVEM C,QITC ;SAVE ACS
MOVEM D,QITD
MOVEM A,INT
MOVE A,WAITA
MOVSI R,-NSFC
MOVE D,SFXTBI(R) ;RESTORE LOCATIONS CLOBBERED BY JSR'S
MOVEM D,@SFXTBL(R)
AOBJN R,.-2
SOS C,SPWR ;BACK UP PC TO CLOBBERED INSTRUCTION
MOVEM C,IPCLOK
SETZM WAITFL ;SURVIVED SFX HACK - EVERYTHING'S HAPPY
JRST INTW2
INTW1: HRRZ C,IPCLOK
JUMPE C,INTOK
MOVEI D,0 ;FAST BINARY SEARCH OF PROTECT TABLE
REPEAT LOG2NPRO,[
MOVE R,PROTB+<1←<LOG2NPRO-.RPCNT-1>>(D)
CAIL C,(R)
ADDI D,1←<LOG2NPRO-.RPCNT-1>
] ;END OF REPEAT LOG2NPRO
HLRZ R,PROTB(D)
JRST (R) ;GO TO PLACE WHICH HANDLES THIS INTERVAL
INTXCT: MOVE R,QITR ;RESTORE ACS
MOVE D,QITD
MOVE C,QITC
EXCH A,INT ;NOTE: FLAGS ARE NOT RESTORED
XCT @IPCLOK ;EXECUTE AN INSTRUCTION
JRST .+2
AOS IPCLOK ;HANDLE SKIPS CORRECTLY - SEE UUOACL
AOS IPCLOK
MOVEM C,QITC
MOVEM D,QITD
MOVEM R,QITR
EXCH A,INT
JRST INTW1 ;TRY AGAIN - MAYBE MORE TO XCT
;;; IFE QIO
INTSYP: SOS NPFFY2 ;PROTECT SYMBOL CONSER
INTSYQ: SOS NPFFY2
INTSYX: MOVEI C,PSYCONS
JRST INTBK1
INTROT: MOVE C,PROTB(D) ;PROTECT CODE OF THE FORM
SUBI C,1 ; ROT A,-SEGLOG
HRRM C,IPCLOK ; ... MUNCH ...
EXCH A,INT ; ROT A,SEGLOG
ROT A,SEGLOG
EXCH A,INT
JRST INTOK
INTPPC: MOVE C,PROTB(D) ;PROTECT PURE CONSER
SUBI C,1 ;BACK UP TO THE AOSL OR WHATEVER
HRRM C,IPCLOK
SOS @(C) ;RESTORE THE COUNTER
JRST INTOK
INTC2X: HLRM B,INT ;MUST PROTECT LEFT HALF OF B FOR CONS
MOVEI C,CONS1 ;HAIRY KIND OF BACKUP FOR CONS
JRST INTBK1
INTC2Y: HLRM B,INT ;MUST PROTECT LEFT HALF OF B FOR CONS
MOVEI C,%CONS1 ;HAIRY KIND OF BACKUP FOR CONS
JRST INTBK1
INTACT: HRRZ C,UUTSV ;UUOACL
JRST INTW1
IFE QIO,[
INTTYI: MOVEI C,TYIN ;PROTECTS THE CASE OF PTYBF FILLED
JRST INTBK1 ; WHEN INTERRUPTED FROM TTYTYI
] ;END OF IFE QIO
INTZAX: SETZM INT ;FOR CONSERS WHICH DON'T WANT TO PROTECT THEIR FREELIST!
INTACX: MOVSS INT ;FOR ACONS (RESTORES A FOR BACKUP)
INTBAK: MOVE C,PROTB(D) ;BACK UP PC TO BEGINNING
INTBK1: HRRM C,IPCLOK ; OF INTERVAL
INTOK:
HS$ 10$ CAIL C,400000 ;NO ARRAYS IN HIGH SEGMENT!
HS$ 10$ JRST INTW2
CAML C,@VBPEND
JRST INTSFX
INTW2: HLRZ C,NOQUIT
JUMPE C,INTW5
INTW4: AOS C,INTWAIT ;GC IS IN PROGRESS - CAUSES SKIP UPON EXIT
MOVEI C,(C)
CAIN C,INTW3
SKIPN @UINTTB(A)
JRST INTW5
MOVE D,QITD ;MUST RESTORE D AND R SO UISTAK
MOVE R,QITR ; CAN SAVE THEM AGAIN
JSR UISTAK ;STACK UP, IF PI IS USER-ENABLED
INTW5: MOVE D,QITD ;RESTORE ACS
MOVE R,QITR
MOVE C,QITC
JRST 2,@INTWAIT ;RETURN TO CALLER
] ;END OF IFE QIO
IFN QIO,[
;;; 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
;;; IFN QIO
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
;;; IFN QIO
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
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,400000 ;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
] ;END OF IFN QIO
PGTOP INT,[INTERRUPT AND UUO HANDLERS]
SUBTTL STRUCT INSERT, BIT TABLES, AND SPACE CALCULATIONS
IFE LOPATCH,[
EXPUNGE PATCH PAT XPATCH
PATCH: PAT: XPATCH: BLOCK PTCSIZ
EPATCH==.-1
] ;END OF IFE LOPATCH
PAGEUP
10$ BSYSSG==HILOC-STDHI ;CROCK - BEWARE RELOCATION!
SPCTOP SYS,,[SYSTEM]
10$ 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: BLOCK NBITB*BTBSIZ
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==1*SGS%PG
NXSPSG==1*SGS%PG
IFE SFA,[
IFN ML+QIO, NSCRSG==2*SGS%PG
.ELSE NSCRSG==3*SGS%PG ;ALLOW FOR PDP6 PAGE (P6)
] ;END IFE SFA
IFN SFA,[
IFN ML+QIO, 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==400000 ;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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