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43,50465/lnkx11.mac
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; V022 28-APR-72
; PDP-11 LINKER, LINK-11 V005A
; COPYRIGHT 1970,1971,1972 DIGITAL EQUIPMENT CORPORATION
IFNDEF NONREN,
<
TWOSEG
RELOC 400000
>
IFNDEF CCLSW, <CCLSW==1>
TITLE LNKX11
ENTRY LINK
EXTERNAL CCLFLA
EXTERNAL SWTLEN, SWTNAM, SWTARG, SIXM40
INTERNAL OBJDEV, OBJNAM, OBJEXT
SPLEN= 100
; DEFINE REGISTERS
R0=0+5
R1=1+5
R2=2+5
R3=3+5
R4=4+5
R5=5+5
SP=6+5
PDP= 17
T0= 0
T1= 1
T2= 2
T3= 3
; SYMBOL TABLE PARAMETERS
BPSYM=5 ;# OF BYTES PER SYMBOL
BASE=4 ;DISTANCE TO BASE OF A SECTION
FLAGS=2 ;DISTANCE TO FLAGS OF AN ENTRY
VALR=3 ;DISTANCE TO RELOCATABLE VALUE OF AN ENTRY
NAME2=2 ;DISTANCE TO 2ND WORD ON AN ENTRY
OBJMN=0 ;OBJECT MODULE NAME
SECTN=1 ;SECTION NAME
SYMN=4 ;SYMBOL ENTRY
ABSREL=40 ;ABS/REL BIT (0/1)
UNDEF=10 ;UNDEFINED/DEFINED (0/1)
INTGLB=100 ;INTERNAL/GLOBAL (0/1)
MONCND=1 ;MONITOR ROUTINE CANDIDATE
GSDBLK= 1
GSDEND= 2
ALODSZ= 320 ;ABSOLUTE LOADER SIZE
;[W1] HGHMEM= ^D16384+100000 ;HIGH MEMADR +1
HGHMEM= 100000 ;HIGH MEMADR +1
INBLN= 324
; BLOCK TYPE COMMANDS
GSDBLK= 1
GSDEND= 2
TXTBLK= 3
RLDBLK= 4
ISDBLK= 5
MODEND= 6
LIBBLK= 7
LIBEND= 10
PCMD1= 7
PCMD2= 8
LANG= "<"
RANG= ">"
TAB= 11
CRR= 15
LF= 12
EOF= 100
OPDEF FAIL [CALLI 12] ;FATAL ERROR EXIT
SYN JRST, BR
SYN JRST, JMP
SYN EXP, .WORD
SYN EXP, .BYTE
SYN SETZM, CLR
SYN SETZM, CLRB
SYN AOS, INC
SYN AOS, INCB
SYN BLOCK, .BLKB
SYN BLOCK, .BLKW
OPDEF JSR [PUSHJ PDP,]
OPDEF RTS [POPJ PDP,]
OPDEF TST [MOVE T0,]
OPDEF TSTB [MOVE T0,]
OPDEF BNE [JUMPN T0,]
OPDEF BEQ [JUMPE T0,]
CPOPJ1: AOS (PDP)
CPOPJ: RTS
OPDEF .TYPE [1B8]
OPDEF .WRITE [2B8]
OPDEF .HEAD [3B8]
OPDEF .READ [4B8]
OPDEF .CSI [5B8]
OPDEF .SETP2 [6B8]
OPDEF .WBIN [7B8]
OPDEF .CORE [10B8]
INTERNAL JOBFF,JOBREL
JOBREL= 44
JOBFF= 121
SYN JOBFF, USYME
SYN JOBREL, ENDM
LINK: ;START OF PROG
MOVSI T1,-<EZCOR-BZCOR>
SETZM BZCOR(T1) ;CLEAR IMPURE CORE
AOBJN T1,.-1
MOVE SP,[IOWD SPLEN,SPBLK] ;SET STACK POINTER
MOVE T1,USYME ;SET BOTTOM
MOVEM T1,SYMB
MOVEM T1,SYME
MOVEI T1,HGHMEM-ALODSZ
MOVEM T1,TOPMEM
START2:
RESE05:
PUSHJ PDP,LINK84 ;CALL PASS 1
PUSHJ PDP,ENDP00 ;FINISH PASS 1
.HEAD ;TYPE THE HEADER
PMAP ;PRINT MAP
AOS PASS ;SET FOR PASS 2
SETLST ;INIT BUFFER
.SETP2 ;SET I/O FOR PASS 2
CLR PTRG ;CLEAR POINTER
PUSHJ PDP,LINK84 ;PROCESS PASS 2
DONE: ;FINI, OUTPUT STARTING ADDRESS
MOVEI T1,INBLN-6
MOVEM T1,INB
MOVEI T1,2
MOVEM T1,INB+1 ;BYTE COUNT
MOVE T1,TRA
MOVEM T1,INB+2 ;TRANSFER ADDRESS
PUSHJ PDP,DMPTXT ;OUTPUT THE TEXT
POPJ PDP, ;RETURN TO EXEC
LINK84: ;PROCESS FILE
.CSI R0 ;GET THE NEXT COMMAND
CLRB CONCAT ;CLEAR CONCATENATION COUNT
CLRB UNDFLG ; AND UNDEFINED'S LISTING FLAG
L84X1: MOVNI R1,SWTLEN
HRLZS R1 ;SET INDEX FOR SWITCHES
SKIPN SWTNAM(R1) ;LOOK FOR A SWITCH
AOBJN R1,.-1
JUMPG R1,L84X2 ;BRANCH IF END
MOVEI R0,PRESW ;SET FOR PRESWITCHES
SWSR
JRST L84X1 ;TRY FOR MORE
L84X2: MOVE R2,PASS
SKIPE OBJDEV ;SKIP IF NO FILE SPECIFIED
JSR @L84X2T(R2) ;CALL PROPER ROUTINE
SKIPE UNDFLG ;UNDEFINED'S REQUESTED?
JSR PUNDEF ; YES, LIST THEM
SKIPN ENDFLG ;END OF INPUT FILES?
JRST LINK84 ; NO, DO NEXT
SETZM ENDFLG
POPJ PDP, ;YES, EXIT
L84X2T: .WORD GSD00 ;PASS 1
.WORD PTXT00 ;PASS 2
SWSR00: ;PROCESS SWITCH
SAVREG ;SAVE REGISTERS
SWSR01: SKIPN T1,(R0) ;END?
JRST SWSR03 ; YES
CAMN T1,SWTNAM(R1) ;NO, MATCH?
JRST SWSR02 ; YES
ADDI R0,2 ;NO, MOVE TO NEXT ENTRY
JRST SWSR01 ;TRY AGAIN
SWSR02: SETZM SWTNAM(R1) ;FOUND, CLEAR ENTRY
EXCH R0,R1
MOVEI R0,SWTARG(R0) ;GET POINTER
HRLI R0,(POINT 6,) ;FORM SIXBIT POINTER
PUSHJ PDP,@1(R1) ;CALL ROUTINE
CAIA
SWSR03: S203 ;SWITCH ERROR
RESREG ;RESET REGISTERS
RTS
PRESW:
SIXBIT /T/
.WORD LINK68
SIXBIT /B/
.WORD LINK67
SIXBIT /OD/
.WORD LINK65
SIXBIT /TR/
.WORD LINK69
SIXBIT /CC/
.WORD LINK14
SIXBIT /L/
.WORD CPOPJ ;DUMMY
SIXBIT /U/
.WORD LINK15
SIXBIT /E/
.WORD LINK12
0
;TOP
LINK68: SKIPN PASS ;IF PASS 2
SKIPE TOPF ; OR ALREADY SET,
RTS ; EXIT
ONEVAL
PUSHJ PDP,OCTOBI ;CONVERT OCTAL
AOS TOPF
MOVEM R1,TOPMEM ;SET NEW TOP
TRNE R1,1 ;ODD?
S203 ; YES, ERROR
RTS
; BOTTOM
LINK67: SKIPN PASS ;IF PASS 2
SKIPE TOPF ; OR TOP SET
RTS ; EXIT
ONEVAL
PUSHJ PDP,OCTOBI ;CONVERT TO OCTAL
AOS BOTF ;SET FLAG AND
MOVEM R1,BOTMEM ; VALUE
TRNE R1,1 ;ODD?
S203
RTS
; ODT
LINK65: NOVAL
AOS ODTF ;SET FLAG
SKIPN PASS
AOS DDTF
RTS
; TRANSFER ADDRESS
LINK69: SKIPE PASS
RTS ;EXIT IF PASS 2
SKIPN (R0) ;DOES IT HAVE A VALUE?
JRST LNK69C ;NO VALUE-
MOVE T1,R0
ILDB T1,T1
CAIL T1,"0"-40 ;NUMERIC?
CAILE T1,"9"-40
CAIA
JRST LNK69A ; YES
PUSHJ PDP,RATOBI ;NO, SYMBOL, CONVERT TO RAD50
HLRZM R1,TRABLK+2
HRRZM R1,TRABLK+3
AOS STRA
AOS TRAF
RTS
; NUMBER
LNK69A: PUSHJ PDP,OCTOBI ;DO OCTAL CONV
MOVEM R1,TRA
TRNE R1,1
S203
AOS FTRA
AOS TRAF
RTS
LNK69C: AOS UTRA
RTS
; /E- END OF COMMANDS
LINK12: NOVAL
AOS ENDFLG
RTS
LINK14: NOVAL
AOS CONCAT
RTS
LINK15: NOVAL
SKIPN PASS ;IGNORE IF PASS 2
AOS UNDFLG ;FLAG /U
RTS
NOV00: ;TEST FOR NO VALUE
SKIPE (R0)
S203
RTS
ONEV00: ;TEST FOR ONE VALUE
SKIPN (R0)
S203
RTS
OCTOBI: ;OCTAL TO BINARY CONVERSION
MOVEI R1,0
OCTOB1: ILDB T1,R0 ;GET CHARACTER
JUMPE T1,OCTOB2 ;BRANCH IF NOT SIXBIT
IMULI R1,8
ADDI R1,-<"0"-40>(T1)
TLNE R0,770000 ;OUT OF BYTE POINTER?
JRST OCTOB1 ; NO
OCTOB2: RTS ;YES, EXIT
RATOBI: ;RADIX 50 PACK
MOVE T0,(R0) ;PLACE IN T0
PUSHJ PDP,SIXM40 ;CONVERT
MOVE T1,T0
RTS ;EXIT
ENDP00: MOVE R0,SYME ;GET BEGINNING OF UNDEFINES
MOVEM R0,SSYME ;SAVE FOR PMAP
ENDP1: CAML R0,USYME ;ANY UNDEFINES LEFT?
JRST ENDP5 ;NO-GO SEE ABOUT MAP.
ENDP2: LDB T1,[POINT 8,FLAGS(R0),35]
TRZ T1,ABSREL ;NO-MAKE ABSOLUTE
TRO T1,UNDEF+INTGLB ;MAKE DEFINED AND GLOBAL.
DPB T1,[POINT 8,FLAGS(R0),35]
MOVEI T1,SYMN
DPB T1,[POINT 8,FLAGS(R0),35-8] ;MAKE IT A SYMBOL DEFINITION.
CLR VALR(R0)
CLR BASE(R0)
ENDP3: ADDI R0,BPSYM ;UPDATE R0 TO NEXT SYMBOL.
BR ENDP1
ENDP5:
ENDP6: CLRB SECTIM
; INITIALIZE FOR PASS 2
MOVE T1,SYMB
CAME T1,SYME ;ANY SYMBOLS?
JRST ENDP7 ;YES
S206 ; NO, ERROR
ENDP7: SETOM TMP1 ;SET ADDRESS REPEAT FLAG
MOVE T1,TOPMEM
MOVEM T1,CURPC ;GET TOP OF MEMORY INTO CURRENT
; ASSIGN ADDRESSES, CALCULATE TOTAL SIZE, KEEP LOWEST ADDRESS LOADED.
ENDP8: MOVE R0,SYMB ;SET PTR TO FIRST MODULE NAME.
MOVEM R0,PTRG
CLR PRSIZE ;0 TO PROGRAM SIZE
BR ENDP11
ENDP10: ADDI R0,BPSYM ;MOVE TO NEXT ENTRY
ENDP11: CAML R0,SYME ;DONE?
JRST ENDP40 ;YES-GET OUT
LDB R1,[POINT 8,FLAGS(R0),35-8] ;GET FLAG TO HIGH BYTE (ENTRY TYPE)
LDB R2,[POINT 8,FLAGS(R0),35] ;GET FLAG LOW BYTE
CAIN R1,OBJMN ;OBJ-MODULE NAME?
JRST ENDP10 ;YES-IGNORE
CAIN R1,SYMN ;SYMBOL ENTRY?
JRST ENDP20 ;YES-GO
CAIN R1,SECTN ;SECTION NAME?
JRST ENDP30 ;YES-GO
BR ENDP10 ;IGNORE ALL OTHER THINGS.
; ENTRY POINT
ENDP20: TRNN R2,ABSREL ;ABS OR REL?
JRST ENDP21 ;ABS
MOVE R3,PTSECT
MOVE T1,BASE(R3) ;GET SECTION BASE
ADD T1,VALR(R0) ;RELOCATE
MOVEM T1,BASE(R0)
BR ENDP10 ;DO NEXT ENTRY
ENDP21: MOVE T1,VALR(R0)
MOVEM T1,BASE(R0) ;SET ABS VALUE
BR ENDP10
; SECTION NAME
ENDP30: TRNE R2,ABSREL ;ABS OR REL?
JRST ENDP31 ;GO IF REL
CLR BASE(R0) ;SET BASE AND
CLR VALR(R0) ;SIZE TO 0
BR ENDP33
ENDP31: MOVE R3,VALR(R0) ;GET SECTION SIZE
TRZE R3,1 ;MAKE SIZE EVEN
ADDI R3,2
ADDM R3,PRSIZE ;SUM UP FOR TOTAL SIZE
TSTB TMP1 ;IS THIS FIRST TIME?
BNE ENDP32 ;FIRST
MOVE T1,CURPC
MOVEM T1,BASE(R0) ;SECOND--SET BASE
ADDM R3,CURPC ;ADJUST PC
BR ENDP33
ENDP32: MOVN T1,R3
ADDB T1,CURPC ;ADJUST PC BY SIZE.
MOVEM T1,BASE(R0) ;SET BASE OF SECTION TO NEW PC.
ENDP33: MOVEM R0,PTSECT ;SAVE PTR TO THIS SECTION.
BR ENDP10 ;DO NEXT ONE.
ENDP40:
; IF BOTTOM SET, CALCULATE NEW TOP AND
; ASSIGN ADDRESSES AGAIN.
TSTB BOTF
BEQ ENDP41 ;NO BOTTOM.
CLRB BOTF
MOVN T1,CURPC
ADD T1,BOTMEM
;CALCULATE NEW TOP AS
ADDM T1,TOPMEM ; TOP-(CURRENT-BOTTOM)
ENDP41: TSTB TMP1 ;DONE TWICE?
BEQ ENDP50 ;YES
CLRB TMP1
MOVE T1,TOPMEM ;CALCULATE LOWADR
SUB T1,PRSIZE
MOVEM T1,LOWADR
MOVEM T1,CURPC
JMP ENDP8
; FINALIZE THE TRANSFER ADDRESS
ENDP50: MOVE T1,TOPMEM
CAML T1,PRSIZE
JRST ENDP51
AOS BELOW0
ENDP51: TSTB TRAF ;IS THERE ONE?
BNE ENDP52 ;YES
MOVEI T1,1
MOVEM T1,TRA ;ASSUME 1
BR ENDP60
ENDP52: TSTB FTRA ;WAS ONE FORCED?
BNE ENDP60 ;YES-
TSTB STRA ;MUST WE SEARCH?
BEQ ENDP53 ;NO-
MOVEI R0,1 ;YES- SEARCH
MOVEI R4,TRABLK+2
SRGLOB
MOVEM R0,R4
MOVEM R4,TRA
BR ENDP60
ENDP53: MOVEI R4,TRABLK
SRMODN ;SEARCH FOR MODULE NAME
BR ENDP54 ;FOUND
S216 ;MODULE NAME MUST BE THERE.
ENDP54: MOVEM R4,PTRG ;SET PTRG TO CURRENT NAME.
MOVEI R4,TRABLK+2
GETSEC ;SEARCH FOR SECTION NAME.
S217 ;MUST BE THERE.
MOVE T1,BASE(R4)
ADDM T1,TRA ;CALCULATE TRA
; FINALIZE DDT TRA
ENDP60:
TSTB SDDTRA ;HAVE WE SEEN ONE?
BEQ ENDP62 ;NO-
MOVEI R4,DDTTRA ;YES-FIX IT UP
SRMODN
BR ENDP61
S216
ENDP61: MOVEM R4,PTRG
MOVEI R4,DDTTRA+2
GETSEC
S217
MOVE T1,BASE(R4)
ADDM T1,TRADDT
ENDP62: MOVE T1,USYME
CAME T1,SYME ;ANY UNDEFINEDS LEFT?
W322 ; YES
JSR SETBIN ;SET FOR BINARY OUTPUT
HRL T1,SYMB
HRRI T1,SYMSAV
BLT T1,SYMSAV+1 ;MOVE NAME
MOVEI R2,0 ;INIT INDEX
ENDP63: SKIPN R0,ENDP6T(R2) ;END?
BR ENDP64 ; YES
MOVE R0,(R0) ;NO, GET ACTUAL VALUE
JSR STOBIN
AOJA R2,ENDP63 ;TRY FOR MORE
ENDP64: JSR DMPBIN ;DUMP THE BINARY
RTS ;EXIT
ENDP6T: ;ADDRESS FOR INITIAL BLOCK
.WORD LOWADR, [3401], LOWADR, PRSIZE, TRA
.WORD TRADDT, [0], SYMSAV, SYMSAV+1, [2], [0]
0 ;TERMINATOR
STOBIN: ;STORE BINARY WORD
MOVE T1,INB+1 ;GET CURRENT BYTE COUNT
CAIL T1,INBLN-20 ;ROOM TO STORE?
JSR DMPBIN ; NO
MOVEI T1,2
ADDM T1,INB+1 ;UPDATE COUNT
IDPB R0,R1 ;STORE THE WORD
RTS
DMPBIN: ;DUMP BINARY BUFFER
JSR DMPTXT
SETBIN: ;INIT BINARY BUFFER
MOVEI T1,INBLN-6
MOVEM T1,INB ;INIT BUFFER
SETZM INB+1 ;CLEAR COUNT
MOVE R1,[POINT 36,INB+2] ;INIT INDEX
RTS
; GET GSD (GGSD)
; READ GSD OFF A TAPE AND BUILDS A SYMBOL TABLE.
GSD00: ;PROCESS GSD (PASS 1)
CLR GSDFLG ;CLEAR ERROR FLAG
JSR GSD18 ;CLEAR ALL OTHER FLAGS
IOIG ;GET THE NEXT BLOCK
JRST GSD18 ; EOF, QUIT
CAIE R2,LIBBLK ;LIBRARY?
JRST GSD02 ; NO
IOIG ;YES, BYPASS BLOCK
S202 ; EOF
GSD01: SYMOVF ;TEST CORE
MOVE T1,USYME
CAMG T1,SYME ;ANY UNDEFINEDS LEFT?
JMP GSD18 ; NO, EXIT
ADDI T1,BPSYM ;LEAVE GAP AFTER UNDEFINEDS
MOVEM T1,LSYMB ;START OF LIBRARY SYMS
MOVEM T1,LSYME ;END
MOVEI T1,1
MOVEM T1,LIBMOD ;SET LIBMOD PNZ
MOVEM T1,LIBF ;SET LIBRARY FLAG
GSD02: CAIE R2,GSDBLK ;GSD BLOCK?
S213 ; NO, FATAL ERROR
LDB T1,[POINT 8,1+FLAGS(R1),35-8]
CAIE T1,OBJMN ;OBJECT MODULE NAME?
S214 ; NO, ERROR
GSD03: MOVE R2,(R1) ;GET BLOCK TYPE
ADDI R1,1 ;MOVE POINTER
MOVNI T1,2
ADDM T1,(R0) ;DECREMENT COUNT
CAIN R2,GSDEND ;GSD END?
JRST GSD10 ; YES
CAIE R2,GSDBLK ;GSD BLOCK?
S213 ; NO, ERROR
GSD04: MOVNI T1,8
ADDB T1,(R0) ;DECREMENT BYTE COUNT
JUMPGE T1,GSD04A ;BRANCH IF NOT END
IOIG ;END, GET NEXT BLOCK
S202 ; EOF, ERROR
JRST GSD03 ;TEST TYPE
GSD04A: MOVE R4,R1 ;MOVE POINTER TO WORK REGISTER
ADDI R1,4 ;MOVE BASIC POINTER AHEAD
GSD05: LDB R2,[POINT 8,FLAGS(R4),35-8]
CAILE R2,GSDMAX ;TYPE IN RANGE?
GSD05A: S220 ; NO
SKIPLE LIBMOD ;LIBRARY SEARCH?
JRST GSD07 ; YES, SPECIAL CASE
JSR @GSDTBL(R2) ;PROCESS BY TYPE
SKIPE GSDFLG ;ERROR?
JRST GSD18 ; YES, QUIT
SKIPN LIBMOD ;LIBRARY MODE?
JRST GSD04 ; NO, GET NEXT INPUT ENTRY
GSD06: MOVE R4,LSYMB ;YES, POINT TO CURRENT LIBRARY ENTRY
MOVEI T1,BPSYM
ADDB T1,LSYMB ;UPDATE CORE COPY
CAMGE R4,LSYME ;FINISHED?
JRST GSD05 ; NO, PROCESS IT
JSR GSD19 ;YES, CLEAR FLAGS
JRST GSD04 ;BACK TO MAIN STREAM
GSD07: SYMOVF ;LIBRARY SEARCH, TEST CORE
HRLI T1,(R4)
HRR T1,LSYME ;POINTER FOR XFER
MOVEI T2,BPSYM
ADDB T2,LSYME ;UPDATE END POINTER
BLT T1,-1(T2) ;MOVE ENTRY TO STORAGE
CAIE R2,SYMN ;SYMBOL ENTRY?
JRST GSD04 ; NO, TRY AGAIN
LDB T1,[POINT 8,FLAGS(R4),35]
TRNE T1,UNDEF ;IF UNDEFINED,
PTGLOB ; ORNOT IN TABLE,
JRST GSD04 ; TRY FOR MORE
LDB T1,[POINT 8,FLAGS(R4),35]
TRNE T1,UNDEF ;FOUND, REFERENCE TO DEFINED?
JRST GSD04 ; YES, IGNORE
SETOM LIBMOD ;MATCH, FLAG FOR INCORPORATION
JRST GSD06 ;INSERT IN MAIN TABLE
GSD10: JSR GSD19 ;END OF MODULE, CLEAR FLAGS
SKIPN LIBF ;LIBRARY MODE?
JRST GSD11 ; NO
IOIG ;YES, GET NEXT BLOCK
S202 ; ERROR IF EOF
CAIN R2,GSDBLK ;MORE TO COME?
JRST GSD01 ; YES
CAIE R2,LIBEND ;NO, END OF LIBRARY?
S270 ; NO, ERROR
GSD11: SKIPE CONCAT ;CONCATENATED FILE?
IOIG ; YES, MORE BLOCKS ON TAPE?
JRST GSD18 ; NO, EXIT
CAIE R2,GSDBLK ;GSD BLOCK?
JRST GSD11 ; NO, IGNORE ALL ELSE
SKIPN LIBF ;YES, LIBRARY FILE?
JRST GSD02 ; NO
JRST GSD01 ; YES
GSD18: CLR LIBF ;END, CLEAR LIBRARY FLAG
GSD19: CLR LSYMB ;CLEAR OTHER CELLS
CLR LSYME
CLR LIBMOD
RTS ;RETURN TO THE WORD
GSDTBL: +GGSD06 ;MODULE NAME
+GGSD07 ;SECTION NAME
+CPOPJ ;ISD SIZE (IGNORE)
+GGSD08 ;TRA SPECIFICATION
+GGSD09 ;SYMBOL
+GSD05A ;ERROR
+GGSDID ;IDENT
GSDMAX= .-GSDTBL-1
; MODULE NAME
GGSD06: MOVEM R4,R2 ;SAVE R4
SRMODN ;CHECK IF MODULE NAME IS UNIQUE
;[W2] BR GGSD10 ;ERROR IF NOT UNIQUE
JSR GGSD10 ;ERROR IF NOT UNIQUE
MOVEM R2,R4
MOVE T1,SYME ;SET PTR TO MODULE NAME
MOVEM T1,PTRG
INSYME ;INSERT AT SYME + UPDATE PTRS
RTS ;DO NEXT ENTRY
GGSD10: W300 ;MODULE NAME NOT UNIQUE
;[W2] GGSD10:+1 JUST WARN ON NON-UNIQUE MODULE NAMES
;[W2] SETOM GSDFLG ;MARK DUMMY END
RTS
; SECTION NAME
GGSD07: MOVEM R4,R2 ;GIND THE GLOBAL + GET
PTGLOB ;PTR (R4) TO IT.
BR GGSD11 ;NOT FOUND, GO INSERT IT.
LDB T1,[POINT 8,FLAGS(R4),35] ;IS IT DEFINED
TRNE T1,UNDEF
JRST GGSD12 ;YES
SQUISH ;NO - REMOVE THE UNDEFINED SYMBOL
MOVNI T1,BPSYM
ADDM T1,USYME
GGSD11: MOVEM R2,R4 ;INSERT AT SYME AND UPDATE PTRS.
MOVE T1,SYME
MOVEM T1,PTRH
INSYME
RTS
GGSD12: LDB T1,[POINT 8,FLAGS(R4),35-8] ;IS IT A SECTION NAME?
CAIE T1,SECTN
JRST GGSD13 ;NO - ERROR - MULT DEFINITION.
MOVEM R4,PTRH
MOVE T1,VALR(R2) ;WHICH SIZE IS BIGGEST
CAMLE T1,VALR(R4)
MOVEM T1,VALR(R4) ;GET BIGGEST SIZE.
RTS ;GO DO NEXT ENTRY
GGSDID: ;IDENT
MOVE T1,0(R4)
HRROM T1,IDENT
MOVE T1,1(R4)
MOVEM T1,IDENT+1
RTS
; TRA SPECIFICATION
GGSD08: TSTB DDTF ;IS THIS THE DEBUG FILE?
BEQ GG8$1 ;NO-
AOS SDDTRA
MOVEI R2,DDTTRA
BR GG8$4
GG8$1: TSTB UTRA ;SHOULD WE USE THIS ONE?
BEQ GG8$2
CLRB UTRA
AOS TRAF
BR GG8$3
GG8$2: TSTB TRAF ;IS THERE ONE ALREADY?
BNE CPOPJ ;YES, GET OUT
GG8$3: MOVEI R2,TRABLK
; GET CURRENT OBJ MODULE NAME
GG8$4: MOVE R3,PTRG
MOVE T1,0(R3)
MOVEM T1,0(R2)
MOVE T1,1(R3)
MOVEM T1,1(R2)
; GET TRA SPEC
MOVE T1,0(R4) ;SECTION NAME
MOVEM T1,2(R2)
MOVE T1,1(R4)
MOVEM T1,3(R2)
MOVE T1,3(R4) ;CONSTANT
MOVEM T1,4(R2)
MOVE T1,DDTF ;IS THIS THE DDT TRA?
CLRB DDTF
TST T1
BNE CPOPJ ;YES-DO NOT TEST FOR ODD VALUE
MOVE T0,4(R2) ;IS IT ODD?
TRNN T0,1
AOS TRAF ;NO - SET FLAG
RTS
; SYMBOL DEFINITION
GGSD09: MOVEM R4,R2 ;SAVE R4
LDB T1,[POINT 8,FLAGS(R2),35] ;REF OR DEF?
TRNN T1,UNDEF
JRST GGSD15 ;REF
PTGLOB ;SEARCH FOR IT AND SET R4
BR GGSD16 ;NOT FOUND
LDB T1,[POINT 8,FLAGS(R4),35] ;FOUND, IS IT DEFINED
TRNE T1,UNDEF
JRST GGSD13 ;YES - ERROR
SQUISH
MOVNI T1,BPSYM
ADDM T1,USYME
GGSD16: MOVEM R2,R4
INPTRH
RTS
; MULTIPLY DEFINED SYMBOL--BROADCAST IT
GGSD13:
W302
RTS
; REFERENCE TO A GLOBAL
GGSD15: PTGLOB
CAIA ;NOT THERE - INSERT IT.
RTS ;IF THERE, IGNORE
MOVEM R2,R4
INUSYM ;INSERT AS UNDEFINED SYMBOL
RTS
IOIG00:
MOVEI T1,INBLN
MOVEM T1,INA
MOVEI R0,INA
.READ R0
SKIPN R0 ;EOF?
AOS (PDP) ; NO
MOVEI R0,INA+1
MOVEI R1,INA+2
MOVE R2,(R1) ;SET BLOCK TYPE
RTS
PTXT00: ;PROCESS TEXT (PASS 2)
SKIPE PTRG ;FIRST TIME AROUND?
JMP PTXT10 ; YES
MOVE T1,SYMB ;YES, SET TO START OF SYMBOLS
SUBI T1,BPSYM ;BACK UP ONE SLOT
MOVEM T1,PTRG ;STORE POINTER
JSR ADVOMN ;ADVANCE TO FIRST OBJ MOD NAME
PTXT10: MOVE T1,PTRG
CAMGE T1,SYME ;IF PAST END,
IOIG ; OR NO MORE INPUT,
JMP PTXT50 ; EXIT
CAIE R2,LIBBLK ;OK, LOOKING AT LIBRARY?
JMP PTXT20 ; NO
PTXT11: IOIG ;YES, BYPASS GSD'S
S202 ;SHOULDN'T HAPPEN!
CAIE R2,LIBEND ;END OF LIBRARY?
JMP PTXT11 ; NO, TRY FOR MORE
IOIG ;YES, MOVE TO NEXT BLOCK
S202
SETOM LIBF ;MARK AS LIBRARY
PTXT20: CAIE R2,GSDBLK ;GSD BLOCK?
S213 ; NO, ERROR
LDB T1,[POINT 8,3(R1),35-8]
CAIE T1,OBJMN ;FIRST ENTRY OBJ MOD NAME?
S214 ; NO, ERROR
MOVE T1,PTRG ;YES, GET POINTER
MOVE T0,1(R1) ;TEST FOR MATCH
CAME T0,0(T1)
JMP PTXT21 ; NO
MOVE T0,2(R1)
CAMN T0,1(T1) ;YES, TRY SECOND
JMP PTXT30 ; YES, ALL SET
PTXT21: SKIPN LIBF ;NO MATCH, LIBRARY?
S271 ; NO, ERROR
PTXT22: IOIG ;YES, BYPASS
S202
CAIE R2,MODEND ;MODULE END?
JMP PTXT22 ; NO, KEEP MOVING!
IOIG ;YES, READ NEXT BLOCK
JMP PTXT50 ; EOF, EXIT
JMP PTXT20 ;OK, TRY AGAIN FOR MATCH
PTXT30: IOIG ;BYPASS GSD'S
S202
CAIN R2,GSDBLK
JMP PTXT30 ;LOOP IF NOT END
CAIE R2,GSDEND ;GSD END?
S272 ; NO, ERROR
CLR INB ;CLEAR TEXT OUTPUT BLOCK
PTXT31: IOIG ;READ THE NEXT BLOCK
S202
PUSH PDP,R2 ;SAVE A COPY
CAIN R2,RLDBLK ;RLD?
PRLD ; YES, PROCESS IT
JSR DMPTXT ;OUTPUT TEXT, IF ANY
MOVE R2,(PDP)
CAIN R2,TXTBLK ;TEXT BLOCK?
JSR MOVTXT ; YES, MOVE INTO SPECIAL BUFFER
POP PDP,R2 ;RESTORE R2
CAIE R2,MODEND ;MODULE END?
JMP PTXT31 ; NO, LOOP
JSR DMPTXT ;YES, MAKE SURE BUFFER IS EMPTY
JSR ADVOMN ;ADVANCE TO NEXT OBJECT MODULE
SKIPN LIBF ;MODULE END. IF IN LIBRARY
SKIPE CONCAT ; OR CONCATENATION,
JMP PTXT10 ; CONTINUE
PTXT50: CLR LIBF ;CLEAR LIBRARY FLAG
RTS ;EXIT
ADVOMN: ;ADVANCE TO NEXT OBJECT MODULE NAME
MOVE T1,PTRG ;GET CURRENT POINTER
ADDI T1,BPSYM ;ADVANCE ONE ENTRY LENGTH
CAML T1,SYME ;TOO FAR?
RTS ; YES, EXIT
MOVEM T1,PTRG ;NO, SET NEW POINTER
LDB T2,[POINT 8,FLAGS(T1),35-8]
CAIE T2,OBJMN ;OBJECT MODULE NAME?
JMP ADVOMN ; NO, TRY AGAIN
RTS ;YES, EXIT
; SUBROUTINE TO PROCESS RLD
; INPUT --
; R0 PTS TO RLD BC
; R1 PTS TO BYTE FOLLOWING RLD BLK WORD
; STACKED R0 AND R1 POINT TO PREVIOUS TXT BLOCK (IF ANY).
PRLD00:
HRLI R1,(POINT 8,,35) ;SET BYTE POINTER
PRLD01: PUSHJ PDP,ADVR1W ;MOVE PAST HEADER
PRLD02: SKIPG (R0) ;DONE WITH RLD?
RTS ;YES
; PROCESS NEXT COMMAND
LDB R2,R1 ;GET COMMAND
PUSHJ PDP,ADVR1B
LDB R3,R1 ;GET OFFSET
PUSHJ PDP,ADVR1B
SUBI R3,2 ;COMPENSATE FOR HEADER
MOVEM R3,OFFSET ;SAVE IT
PUSH PDP,R4 ;STACK REG
LSHC R3,-1 ;DIVIDE BY TWO
ADDI R3,INB+2 ;FORM POINTER
HRLI R3,(POINT 8,,35)
SKIPGE R4 ;ODD?
HRLI R3,(POINT 8,,35-8)
POP PDP,R4 ;RESTORE R4
PUSH SP,R2 ;STACK COMD
ANDI R2,177 ;SAVE LOW 7 BITS
MOVE R5,PTSECT
CAIL R2,CMDMAX
PRLD04: S220
JSR @ PRLD09 (R2) ;GO EXECUTE PROPER HANDLER
JRST PRLD02
PRLD09: EXP PRLD04, PRLD10, PRLD20, PRLD30, PRLD40, PRLD50, PRLD60
EXP PRLD70, PRLD80, PRLD90, PRLD20, PRLD04, PRLD40, PRLD50, PRLD60
CMDMAX= .-PRLD09
; CMD #1 -- INTERNAL RELOC
PRLD10: MOVE R4,(R1) ;GET REL VALUE
PUSHJ PDP,ADVR1W
ADD R4,BASE(R5) ;RELOCATE IT
PRLD11: TXTPUT
RTS
; CMD #2 -- GLOBAL RELOC
PRLD20: MOVEM R1,R4 ;SET ADR OF NAME
PUSHJ PDP,ADVR1D
SRGLOB ;SEARCH FOR GLOBAL NAME
S211 ;ERROR
PRLD21: TXTPUT
RTS
; CMD #3 -- INTERNAL DISPLACED RELOC
PRLD30: GETPC ;GET PC AT CURRENT PLACE.
MOVNS R4
ADD R4,(R1) ;FORM (X - (.+2))
PUSHJ PDP,ADVR1W
BR PRLD11
; CMD #4 -- GLOBAL DISPLACED RELOC
PRLD40: GETPC ;GET PC NOW
MOVEM R4,TMP1
MOVEM R1,R4
PUSHJ PDP,ADVR1D
SRGLOB ;GET GLOBAL VALUE
S211 ;ERROR
PRLD41: SUB R4,TMP1 ;FORM (X-(.+2))
BR PRLD21
; CMD #5 -- GLOBAL ADDITIVE RELOC
PRLD50: MOVEM R1,R4
SRGLOB ;GET GLOBAL VALUE
S211 ;ERROR
PUSHJ PDP,ADVR1D
ADD R4,(R1) ;ADDITIVE CONSTANT
PUSHJ PDP,ADVR1W
BR PRLD21
; CMD #6 -- GLOBAL ADDITIVE DISPLACED
PRLD60: GETPC ;GET PC NOW
MOVEM R4,TMP1
MOVEM R1,R4
PUSHJ PDP,ADVR1D
SRGLOB
S211 ;ERROR
ADD R4,(R1)
PUSHJ PDP,ADVR1W
BR PRLD41
; CMD #7 -- SET PC
PRLD70: MOVEM R1,R4
PUSHJ PDP,ADVR1D
GETSEC ;GET SECTION POINTER
S215 ;FATAL ERROR
MOVEM R4,PTSECT ;SET PTSECT
MOVEM R4,R5
BR PRLD80
; CMD #8 -- PC MODIFICATION
PRLD80: JSR DMPTXT ;BE SURE TEXT BUFFER IS DUMPED
MOVE R4,BASE(R5) ;GET SECTION BASE VALUE
ADD R4,(R1) ;MODIFY
PUSHJ PDP,ADVR1W
MOVEM R4,CURPC
PUSHJ PDP,ADVR1W
POP SP,(SP) ;PRUNE STACK POINTER
; PC COMMANDS MUST BE LAST IN RLD
SKIPG (R0)
RTS
; IF NOT DONE, NEXT COMMAND MUST ALSO BE PC TYPE
MOVE T1,(R1)
CAIE T1,PCMD1
CAIN T1,PCMD2
RTS
; ERROR --- CMD MUST BE PC TYPE.
S212 ;FATAL ERROR
; CMD #9---SET PROGRAM LIMITS
PRLD90: MOVE R4,LOWADR ;SET LOW LIMIT
PUSH SP,(SP) ;GET TWO COPIES OF FLAG
TXTPUT
MOVE R4,TOPMEM ;SET HIGH LIMIT
TXTPUT
RTS
ADVR1D: PUSHJ PDP,ADVR1W ;ADVANCE DOUBLE WORD
ADVR1W: PUSHJ PDP,ADVR1B ;ADVANCE ONE WORD
ADVR1B: ;ADVANCE ONE BYTE
TLCE R1,(POINT 0,,35-8)
ADDI R1,1 ;MOVE TO NEXT WORD
SOS (R0) ;DECREMENT BYTE COUNT
POPJ PDP,
; SUBROUTINE TXTPUT
; PUT INFO INTO TXT BLOCK
; THE RLD COMMAND IS STACKED
; THIS ROUTINE REMOVES 1 WORD
; FROM THE STACK,SP
TXTP00: POP SP,T1 ;MOVE INDEX INTO T1
TRNE T1,000200 ;BYTE OR WORD COMMAND
JRST TXTP01 ;GO IF BYTE COMMAND.
PUSHJ PDP,TXTP03 ;PUT IN FIRST BYTE
LSH R4,-8 ;PREPARE FOR SECOND BYTE.
TXTP01: PUSHJ PDP,TXTP03 ;PUT IN BYTE
TRNE R4,177400 ;ERROR IF UNUSED PORTION
TRNN T1,000200
CAIA
W301 ; BYTE RELOC ERROR!
RTS ;RETURN
TXTP03: DPB R4,R3
TLCE R3,(POINT 0,,35-8)
ADDI R3,1
POPJ PDP,
; SUBROUTINE GETPC
; GET PC FOR CURRENT PLACE IN TXT BLOCK
GETP00: MOVE R4,CURPC ;GET PC AT ENTRY TO BLOCK
ADD R4,OFFSET ;ADD CURRENT PLACE.
RTS
MOVTXT:
MOVE T1,[XWD INA+1,INB]
BLT T1,INB+<INBLN/2>-1
MOVEI T1,INBLN-6
MOVEM T1,INB
MOVE T1,INA+1
SUBI T1,2
MOVEM T1,INB+1
MOVE T1,CURPC
MOVEM T1,INB+2
POPJ PDP,
DMPTXT:
SKIPN INB ;ANY TEXT?
RTS ; NO
MOVE T1,INB+1
SUBI T1,2
ADD T1,INB+2
MOVEM T1,CURPC ;UPDATE PC
.WBIN INB
SETZM INB
RTS
; SUBROUTINE TO PRINT THE LOAD MAP (PMAP)
PMAP00: ;PRINT SYMBOL TABLE MAP
SETLST ;INIT THE LISTING POINTER
MOVEI R0,PMAP86 ;PRINT HEADER
MOVSTR
MAPTYP
JSR TTRAM ;PRINT TRANSFER BLURB
SKIPA R2,SYMB ;INIT BASIC POINTER AND SKIP
PMAP01: ADDI R2,BPSYM ;MOVE TO NEXT ENTRY
CAML R2,SYME ;END?
JRST PMAP10 ; YES, TEST FOR UNDEFINEDS
LDB R3,[POINT 8,FLAGS(R2),35-8]
CAILE R3,PMAX ;TYPE IN RANGE?
S220 ; NO
JSR @PMAPJT(R3) ;YES, CALL THE PROPER ROUTINE
JMP PMAP01 ;AGAIN
PUNDEF: ;ENTRY FOR /U
SETLST
MOVEI T1,1 ;SET FOR TTY OUTPUT
CAIA
PMAP10: MOVEI T1,2 ;SET FOR LISTING OUTPUT
MOVEM T1,LSTMOD
SKIPA R2,SYME ;TEST FOR UNDEFINEDS
PMAP11: ADDI R2,BPSYM ;MOVE TO NEXT ENTRY
CAML R2,USYME ;END?
JMP PMAP19 ; YES, EXIT
CAME R2,SYME ;FIRST TIME AROUND?
JMP PMAP12 ; NO
MOVEI R0,PMAP80 ;YES, PRINT SOME STARS
MOVSTR
DMPLST
MOVEI R0,PMAP84 ; AND MESSAGE
MOVSTR
DMPLST
DMPLST ;EXTRA CR/LF
PMAP12: MOVE R0,R2 ;SET POINTER TO NAME
UNPACK ;UNPACK
DMPLST
JMP PMAP11 ;TEST FOR MORE
PMAP19: RTS ;EXIT
PMAPJT: ;PMAP JUMP TABLE
.WORD PMAPT0, PMAPT1, PMAPT2, PMAPT3, PMAPT4
PMAX= .-PMAPJT-1 ;BOUNDS CHECK
PMAPT0: ;OBJECT MODULE NAME
MOVEI R0,PMAP80 ;PRINT STARS
MOVSTR
MAPTYP
MOVEI R0,[ASCIZ /MODULE /]
MOVSTR
MOVE R0,R2 ;POINT TO NAME
UNPACK
MAPTYP
MOVEI R0,PMAP88 ;SECOND LINE OF HEADER
MOVSTR
MAPTYP
RTS
PMAPT1: ;PROG SECTION NAME
MOVEI R0,LANG ;"<"
IDPB R0,R1 ;PLACE IN BUFFER
MOVE R0,R2 ;POINT TO NAME
UNPACK
MOVEI R0,RANG ;">"
IDPB R0,R1
MOVEI R0,TAB
IDPB R0,R1
MOVE R0,BASE(R2) ;SET BASE VALUE
OTOA
MOVEI R0,TAB
IDPB R0,R1
MOVE R0,VALR(R2) ;GET SIZE
OTOA
MAPTYP ;PRINT THE LINE
RTS
PMAPT2: ;ILLEGAL
PMAPT3: ;ILLEGAL
S210
PMAPT4: ;ENTRY SYMBOL
MOVEI R0,TAB
IDPB R0,R1
MOVE R0,R2 ;POINT TO SYMBOL
UNPACK
MOVEI R0,TAB
IDPB R0,R1
MOVE R0,BASE(R2) ;GET VALUE
OTOA
MAPTYP
RTS
TTRAM: ;PRINT TRANSFER MESSAGE
SETLST ;INIT LISTING BUFFER
DMPLST ;CR/LF
SKIPN IDENT
JRST TTRAM1
MOVEI R0,[ASCIZ /IDENT: /]
MOVSTR
MOVEI R0,IDENT
UNPACK
DMPLST
DMPLST
TTRAM1: MOVEI R0,[ASCIZ /TRANSFER ADDRESS: /]
MOVSTR
MOVE R0,TRA ;PRINT MSG--TRA,LOW ADR,ETC
OTOA
DMPLST
MOVEI R0,[ASCIZ /LOW LIMIT: /]
MOVSTR
MOVE R0,LOWADR
OTOA
DMPLST
MOVEI R0,[ASCIZ /HIGH LIMIT: /]
MOVSTR
MOVE R0,TOPMEM
OTOA
DMPLST
RTS
; OUTPUT BUFFERS FOR PMAP
PMAP80:
ASCIZ /**********/ ;OUTPUT MESSAGE
PMAP84: ASCIZ /UNDEFINED REFERENCES/
PMAP86:
ASCIZ /LOAD MAP/
PMAP88:
ASCIZ /SECTION ENTRY ADDRESS SIZE/
CRLF:
BYTE (7) CRR, LF, 0
TYPE00: ;TYPE MESSAGE
MOVEI T1,1 ;FLAG OF 1
CAIA
MAPT00: ;PRINT MESSAGE
MOVEI T1,2 ;FLAG OF 2
MOVEM T1,LSTMOD ;SET LISTING MODE
DMPL00: ;DUMP LISTING BUFFER IN CURRENT MODE
MOVEI R0,0
IDPB R0,R1 ;SET ASCIZ TERMINATOR
MOVE T1,LSTMOD
TRNE T1,1 ;TYPE MODE?
.TYPE @LSTPNT ; YES
TRNE T1,2 ;LIST MODE?
.WRITE @LSTPNT ; YES
;FALL INTO INIT ROUTINE
SETL00: ;INIT LISTING BUFFER
MOVE R1,[POINT 7,LSTBUF] ;POINT R1 TO BUFFER
MOVEM R1,LSTPNT ;SAVE (CAN ADD DOUBLE BUFFERING)
RTS ;EXIT
MOVS00: ;MOVE STRING INTO BUFFER
;SOURCE IN R0, DEST IN R1
TLOA R0,(POINT 7,,) ;SET BYTE POINTER AND SKIP
IDPB T1,R1 ;STORE CHARACTER
ILDB T1,R0 ;FETCH THE NEXT
JUMPN T1,.-2 ;LOOP IF NOT END
RTS
; SAVE REGISTERS
SAVR00: PUSH SP,R5
PUSH SP,R4
PUSH SP,R3
PUSH SP,R2
PUSH SP,R1
PUSH SP,R0
RTS
; RESTORE REGISTERS
RESR00: POP SP,R0 ;RESTORE THEM
POP SP,R1
POP SP,R2
POP SP,R3
POP SP,R4
POP SP,R5
RTS ;EXIT
;SUBROUTINE OTOA (OCTAL TO ASCII CONVERSION)
; ASSUMES 1) NUMBER IN REGISTER ON ENTRY(R0)
; 2) BUFFER STORAGE REQD. PTR SET (R1)
; 3) STACK TOP RATHER THAN 3RD REG.
; ON EXIT: CONVERSION IN BUFFER, PTR AT NEXT BYTE
; NUMBER REGISTER CLEARED
; TOP OF STACK CLEAN
OTOA00: MOVE T1,[POINT 3,R0,17] ;SET BYTE POINTER
OTOA01: ILDB T2,T1 ;GET NEXT CHAR
ADDI T2,"0" ;CONVERT TO ASCII
IDPB T2,R1 ;STORE
TLNE T1,770000
JRST OTOA01 ;MORE TO GO
RTS ;... & EXIT
; MOD40 UNPACK
; INPUT: R0=ADR OF MOD40 NUMBER (2 WORDS)
; R1=ADR OF ASCII STRING (6 BYTES)
; OUTPUT: R1 POINTS ONE PAST LAST GENERATED CHARACTER
; IF N IS THE MOD40 NUMBER, THEN
; N=C1*50^2+C2*50+C3
; THUS, N/50^2 IS C1 AND THE REMAINDER IS C2*50+C3
; THE REMAINDER IS DIVIDED BY 50 TO GET C2 ETC.
UNPA00: SAVREG
HRLI R0,-2 ;MAJOR LOOP COUNT
UNPA07: MOVSI R5,-3 ;MINOR LOOP COUNT
UNPA06: HRRZ T0,(R0) ;GET MOD40 WORD
IDIV T0,COEFF(R5) ;DIVIDE BY PROPER COEFFICIENTS
IDIVI T0,50 ;ISOLATE CHAR IN T1
UNPA01: JUMPE T1,UNPA03 ;"BLANK"
CAIN T1,33
JRST UNPA05 ;"$"
CAIL T1,33
JRST UNPA04 ;"." OR "0-9"
ADDI T1,40 ;"A-Z"
UNPA03: ADDI T1,16
UNPA04: ADDI T1,11
UNPA05: ADDI T1,11
IDPB T1,R1 ;STORE CHARACTER
AOBJN R5,UNPA06 ;DONE 3 CHARS?
AOBJN R0,UNPA07 ;TEST OUTER LOOP
; DONE--PUT CURRENT R1 ONTO THE STACK
MOVEM R1,-1(SP)
RESREG
RTS
; COEFFICIENT TABLE
COEFF: ^D1600 ;40.^2
^D40 ;40.^1
^D1 ;40.^0
; SYMOVF---SYMBOL TABLE OVERFLOW CHECK
SYMO00: SKIPN T1,LSYME
MOVE T1,USYME
ADDI T1,2*BPSYM
CAMGE T1,ENDM
RTS
.CORE
S223 ;DIE!!
RTS ;OK.
; SRMODN---SEARCH FOR A MODULE NAME.
; INPUT: R4 POINTS TO MOD4O NAME
; OUTPUT: R4 POINTS TO THE NAME IF FOUND
; CALL: SRMODN
; BR ;FOUND
; BR ;NOT FOUND
SRMO00: SAVREG
MOVE R0,SYMB ;GET POINTER TO START OF TABLE
SRMO01: CAMGE R0,SYME ;DONE
JRST SRMO02 ;NO
RESREG ;YES - NOT FOUND
AOS (PDP) ;ADJUST RETURN ADDRESS
RTS ;EXIT
SRMO02: LDB T1,[POINT 8,FLAGS(R0),35-8] ;IS THIS AN OBJ MODULE NAME?
CAIN T1,OBJMN
JRST SRMO03 ;YES - SEE IF NAME IS SAME
SRMO04: ADDI R0,BPSYM ;NO - TRY NEXT ONE
BR SRMO01
SRMO03: MOVE T1,(R4)
CAME T1,(R0)
JRST SRMO04 ;NO - GO TO NEXT ENTRY
MOVE T2,1(R4)
CAME T2,1(R0)
JRST SRMO04
; FOUND!!
MOVEM R0,-4(SP) ;PUT CURRENT R0 ONTO STACK
RESREG
RTS
; PTGLOB---SEARCH FOR GLOBAL & RETURN A POINTER TO IT.
; INPUT: R4=POINTER TO NAME
; OUTPUT: R4=POINTER TO ENTRY IF FOUND.
; CALL PTGLOB
; BR ;NOT FOUND
; BR ;FOUND
PTGL00: SAVREG
SKIPN (R4) ;IS THIS THE SPECIAL
;CASE OF 6 BLANKS?
JRST PTGL01 ;YES
MOVE R0,SYMB ;SET LIMITS FOR SEARCH
BR PTGL02
PTGL01: MOVE R0,PTRG ;START AT CURRENT OBJ MODULE IF 6 BLANKS
PTGL02: CAMGE R0,USYME ;DONE SEARCHING
JRST PTGL03 ;NO-
RESREG ;YES - EXIT
RTS
PTGL03: MOVE T1,(R0) ;CHECK FIRST WORD
CAME T1,(R4)
JRST PTGL04 ;NO MATCH.
MOVE T2,1(R0)
CAME T2,1(R4)
JRST PTGL04
; MATCH---
LDB T1,[POINT 8,FLAGS(R0),35-8] ;FILTER OUT OBJ MODULE NAMES.
CAIN T1,OBJMN
JRST PTGL04
MOVEM R0,-4(SP)
RESREG
AOS (PDP)
RTS
; NO MATCH--
PTGL04: ADDI R0,BPSYM ;ADVANCE R0 TO NEXT ENTRY
BR PTGL02 ;TRY AGAIN.
; GETSEC--GET POINTER TO SECTION NAME.
; INPUT: R4 PTS TO NAME.
; OUTPUT: R4 PTS TO PROPER ENTRY
; CALL: GETSEC
; BR ;NOT FOUND
GETS00: PTGLOB ;FIND GLOBAL NAME
GETS01: RTS ;NOT FOUND.
; FOUND, INSURE THAT IT IS A SECTION NAME.
LDB T1,[POINT 8,FLAGS(R4),35-8]
CAIE T1,SECTN
JRST GETS01 ;NOT A SECTION NAME
AOS (PDP) ;SECT NAME. ADJUST RETURN
RTS
; SRGLOB---SEARCH FOR GLOBAL AND RETURN VALUE IN R4
; INPUT: R4=ADR OF GLOBAL NAME
; OUTPUT: R4=VALUE
; CALL SRGLOB
; BR ;NOT FOUND
SRGL00: PTGLOB ;GET POINTER TO GLOBAL
RTS ;NOT FOUND
MOVE R4,BASE(R4) ;FETCH VALUE
AOS (PDP)
RTS ;EXIT
; INUSYM--INSERT AS UNDEFINED
; INPUT: R4=ADR OF WHAT TO INSERT INTO UNDEFINED AREA
INUS00: SYMOVF
PUSH SP,R0 ;STACK R0
MOVE R0,USYME
HRLI R0,-<BPSYM-1> ;MOVE IN THE UNDEFINED SYMBOL
MOVE T1,(R4)
MOVEM T1,(R0)
ADDI R4,1
AOBJN R0,.-3
MOVEI T1,BPSYM
ADDM T1,USYME
POP SP,R0
RTS
; INSYME
; INSERT AN ENTRY AT SYME. R4 POINTS TO THE ENTRY.
; ADJUST POINTERS SYME AND USYME
INSY00: SAVREG
MOVEM R4,R2
MOVE R4,SYME
INSY01: UNSQUISH ;MAKE A HOLE AT SYME
MOVEI T1,BPSYM
ADDM T1,SYME
ADDM T1,USYME
MOVSI T1,(R2) ;MOVE IN THE SYMBOL
HRRI T1,(R4)
BLT T1,BPSYM-2(R4)
RESREG
RTS
; INPTRH
; INSERT AN ENTRY AT (PTRH)+BPSYM
; INSERT THE ENTRY ALPHABETICALLY
; R4 POINTS TO THE ENTRY
; UPDATE POINTERS SYME,USYME
INPT00: SAVREG
MOVEM R4,R2 ;SET PTRS
MOVE R4,PTRH
INPT01: ADDI R4,BPSYM ;START LOOP LOOKING FOR END OF SECTION
;OR AN ENTRY WHICH IS>THEN PRESENT
;ENTRY
CAML R4,SYME ;CHECK FOR END OF SYMBOLS
JRST INPT02
LDB T1,[POINT 8,FLAGS(R4),35-8]
CAIE T1,SYMN
JRST INPT02
MOVE T1,(R4) ;DOUBLE PREC COMP
CAMLE T1,(R2)
JRST INPT02
CAME T1,(R2)
JRST INPT01
MOVE T2,1(R4)
CAME T2,1(R0)
JRST INPT01
; INSERT AT (R4)
INPT02: MOVEI T1,BPSYM
CAMGE R4,PTRG ;UPDATE PTRG IF INSERTING BELOW PTRG
ADDM T1,PTRG
BR INSY01 ;GO INSERT AT R4
; UNSQUISH---MAKE A HOLE IN TABLE
; INPUT: R4 POINTS WHERE TO MAKE HOLE.
UNSQ00: SYMOVF
SAVREG
MOVE R0,USYME ;SOURCE POINTER
UNSQ01: CAML R0,R4 ;DONE?
JRST UNSQ02 ;NO
RESREG
RTS
UNSQ02: MOVE T1,-1(R0)
MOVEM T1,BPSYM-1(R0)
SOJA R0,UNSQ01
; SQUISH---REMOVE AN ENTRY FROM TABLE.
; INPUT: R4=ADR OF WHERE TO REMOVE ENTRY
SQUI00: SAVREG
SQUI01: CAMGE R4,USYME ;DONE
JRST SQUI02 ;NO--
RESREG ;YES-EXIT
RTS
SQUI02: MOVE T1,BPSYM(R4)
MOVEM T1,(R4)
AOJA R4,SQUI01
; NON-FATAL ERRORS
OPDEF W300 [JSR .]
SAVREG
PUSH SP,[0]
PUSH SP,[1300]
IOT
RESREG
RTS
OPDEF W301 [JSR .]
SAVREG
GETPC
SUBI R4,2
PUSH SP,R4
PUSH SP,[1301]
IOT
RESREG
RTS
OPDEF W302 [JSR .]
SAVREG
SETLST
MOVE R0,PTRG
UNPACK
MOVEI R0,","
IDPB R0,R1
MOVE R0,R4
UNPACK
TYPE
PUSH SP,[0]
PUSH SP,[1302]
IOT
RESREG
RTS
OPDEF W322 [JSR .]
SAVREG
PUSH SP,[0]
PUSH SP,[1322]
IOT
RESREG
RTS
; MACRO TO GENERATE FATAL ERRORS
DEFINE GENERR (NUMBER,VALUE,DEVNAM)
<
OPDEF S'NUMBER [JSR .]
PUSH SP,[EXP VALUE]
PUSH SP,[EXP 2000+NUMBER]
IOT
IFNB <DEVNAM>,
<
JSR TYPEDV
>
FAIL
>
; GENERATE FATAL ERRORS
GENERR 202,EOF,1 ;PREMATURE EOF
GENERR 203,0, ;ILLEGAL SWITCH
GENERR 206,0, ;NO INPUT FILES
GENERR 210,0,1 ;UNRECOGNIZED SYMBOL TABLE ENTRY
GENERR 211,0,1 ;RLD GLOBAL
GENERR 212,0,1 ;RLD PC
GENERR 213,0,1 ;OBJ MOD DOESN'T START WITH GSD
GENERR 214,0,1 ;FIRST GSD NOT MODULE NAME
GENERR 215,0,1 ;RLD IMAGINARY REFERENCE
GENERR 216,0, ;TRS
GENERR 217,0, ;TRA
GENERR 220,0, ;JUMP OUT OF RANGE
GENERR 223,0, ;SYMBOL TABLE OVERFLOW
GENERR 270,0,1 ;NO LIBRARY END BLOCK
GENERR 271,0,1 ;MODULES OUT OF ORDER
GENERR 272,0,1 ;GSD BLOCK NOT TERMINATED WITH GSDEND
IOT00: ;SIMULATED IOT
SETLST ;SET LISTING BUFFER
POP SP,T0 ;FETCH CODE
LDB T1,[POINT 2,T0,35-9]
MOVE R0,[EXP "A", "W", "S", "?" ](T1)
IDPB R0,R1 ;STORE PROPER CHARACTER
MOVE T1,[POINT 3,T0,35-9] ;SET INDEX
IOT01: ILDB R0,T1 ;FETCH NEXT OCTAL BYTE
ADDI R0,"0" ;MAKE NUMERIC
IDPB R0,R1 ;STORE IN BUFFER
TLNE T1,770000 ;FINISHED?
BR IOT01 ; NO
MOVEI R0,TAB ;YES, NOW A TAB
IDPB R0,R1
POP SP,R0 ;GET VALUE
OTOA ;CONVERT
TYPE ;TYPE LINE
RTS ;EXIT
TYPEDV: ;TYPE "DEV:FILNAM.EXT"
SETLST
MOVE T0,OBJDEV
JSR TYPED1
MOVEI R0,":"
IDPB R0,R1
MOVE T0,OBJNAM
JSR TYPED1
MOVEI R0,"."
IDPB R0,R1
MOVE T0,OBJEXT
JSR TYPED1
TYPE ;TYPE THE LINE
RTS
TYPED1: MOVSI T1,(POINT 6,T0) ;SET BYTE POINTER
TYPED2: ILDB R0,T1 ;GET CHAR
JUMPE R0,CPOPJ ;EXIT IF BLANK
ADDI R0,40 ;CONVERT TO ASCII
IDPB R0,R1 ;STORE
BR TYPED2
DEFINE GENTRP (NAME,ADDR)
<
OPDEF NAME [PUSHJ PDP,ADDR]
>
GENTRP UNPACK,UNPA00 ;MOD40 UNPACK
; GENTRP PACK,PACK00 ;MOD 40 PACK
GENTRP OTOA,OTOA00 ;OCTAL TO ASCII CONVERRSION
GENTRP SAVREG,SAVR00 ;SAVE REGISTERS
GENTRP RESREG,RESR00 ;RESTORE REGISTERS
GENTRP TXTPUT,TXTP00 ;PUT INTO TXT BLOCK
GENTRP GETPC,GETP00 ;GET CURRENT PC VALUE
GENTRP TYPE,TYPE00 ;TYPE A BUFFER ON TTY
; GENTRP ACCEPT,ACCE00 ;READ FROM KBD
GENTRP SQUISH,SQUI00 ;REMOVE WORDS FROM TABLE
GENTRP UNSQUISH,UNSQ00 ;MAKE A HOLE IN TABLE
GENTRP PMAP,PMAP00 ;PRINT LOAD MAP
GENTRP MOVSTR,MOVS00 ;MOVE STRING INTO BUFFER
GENTRP MAPTYP,MAPT00 ;TYPE ON MAP DEVICE
GENTRP DMPLST,DMPL00 ;DUMP LISTING BUFFER
GENTRP SETLST,SETL00 ;SET LISTING BUFFER
; GENTRP IOII,IOII00 ;OBJ MODULE INPUT INIT.
GENTRP IOIG,IOIG00 ;OBJ MODULE INPUT GET
; GENTRP IOIC,IOIC00 ;OBJ MODULE INPUT CLOSE AND RELEASE
; GENTRP IOOI,IOOI00 ;LOAD MODULE OUTPUT INIT
; GENTRP IOOP,IOOP00 ;LOAD MODULE OUTPUT PUT.
GENTRP GGSD,GSD00 ;GET GSD
; GENTRP GNGSD,GNGS00 ;GET NON-GSD BLOCK.
GENTRP PRLD,PRLD00 ;PROCESS RLD
GENTRP SRGLOB,SRGL00 ;GET VALUE OF GLOBAL
GENTRP PTGLOB,PTGL00 ;GET PTR TO GLOBAL
GENTRP INSYME,INSY00 ;INSERT AT SYME
GENTRP SRMODN,SRMO00 ;SEARCH FOR MODULE NAME
GENTRP INUSYM,INUS00 ;INSERT UNDEFINED SYMBOL
GENTRP SYMOVF,SYMO00 ;CHECK FOR SYMBOL OVERFLOW (FATAL)
GENTRP GETSEC,GETS00 ;GET SECTION NAME POINTER
GENTRP IOT,IOT00 ;IOT SIMULATION
GENTRP SWSR,SWSR00 ;SWITCH SEARCH
GENTRP INPTRH,INPT00 ;INSERT AT PTRH
; GENTRP DIRSR,DIRS00 ;DIRECTORY SEARCH
; GENTRP MOVTAB,MOVT00
GENTRP NOVAL,NOV00
GENTRP ONEVAL,ONEV00
; GENTRP ERCODE,ERCO00
; GENTRP READER,READ00
; DATA AREA
IFNDEF NONREN, <RELOC 0>
BZCOR: ;START OF CORE TO BE ZAPPED
PTRH: .BLKW 1 ;POINTER TO CURRENT SECTION
SYMB: .BLKW 1 ;SYMBOLS BEGINNING
SYME: .BLKW 1 ;SYMBOLS END
;USYME: .BLKW 1 ;SYMBOLS END OF UNDEFINES
SSYME: .BLKW 1 ;SAVED SYME FOR PMAP
PASS: .BLKB 1 ;PASS FLAG
MAPF: .BLKB 1 ;MAP LIST FLAG
;MAP DEVICE CODE
CONCAT: .BLKB 1 ;CONCATENATION FLAG
PTRG: .BLKW 1 ;PTR TO MODULE NAME
CURPC: .BLKW 1 ;CURRENT PC
PRSIZE: .BLKW 1 ;PROGRAM SIZE IN BYTES
PTSECT: .BLKW 1 ;PTR TO CURRENT SECTION LEADER
LOWADR: .BLKW 1 ;LOWEST ADDRESS LOADED.
OFFSET: .BLKW 1 ;OFFSET FOR RLD TXT COMMAND.
TMP1: .BLKW 1
;LOAD MODULE DEVICE
IDENT: .BLKW 2 ;IDENT
TRAF: .BLKB 1 ;TRA FLAG (0=NONE SEEN YET)
TOPMEM: .BLKW 1 ;TOP OF MEMORY
BOTMEM: .BLKW 1 ;BOTTOM OF MEMOTY
TOPF: .BLKB 1 ;TOP SPECIFIED FLAG
BOTF: .BLKB 1 ;BOTTOM FLAG
DDTF: .BLKB 1 ;D SWITCH
SDDTRA: .BLKB 1 ;DDT TRA SEEN FLAG
UTRA: .BLKB 1 ;USE THIS FILE FOR TRA
FTRA: .BLKB 1 ;FORCED TRA
STRA: .BLKB 1 ;SYMBOLIC TRA
MONLIB: .BLKB 1 ;MON LIB SEARCH FLAG
SECTIM: .BLKB 1 ;CHANGE " " TO ". "
LIBF: .BLKB 1 ;LIBRARY FLAG
BELOW0: .BLKB 1 ;PROGRAM TO BE LINKED BELOW 0
ODTF: .BLKB 1 ;TRY TO OPEN ODT FILE
MONTOP: .BLKW 1 ;TOP OF MONITOR
INA:
BLOCK <INBLN>/2+INA-.
INB:
BLOCK <INBLN>/2+INB-.
LSTMOD: BLOCK 1 ;LISTING MODE (1-TTY/2-LPT)
LSTPNT: BLOCK 1 ;START OF CURRENT LISTING BUFFER
LSTBUF: BLOCK ^D72/5+2 ;LISTING BUFFER
SYMSAV: BLOCK 2 ;TEMP STORAGE
UNDFLG: BLOCK 1 ;/U FLAG
TRABLK: BLOCK ^D10/2 ;SAVE AREA FOR XFER ADDRESS
TRA= .-1
DDTTRA: BLOCK ^D10/2
TRADDT= .-1
SPBLK: BLOCK SPLEN ;SP BUFFER
ENDFLG: BLOCK 1 ;/E SEEN
GSDFLG: BLOCK 1 ;ERROR FLAG FOR GSD
LIBMOD: BLOCK 1 ;LIBRARY MODE:
;+1 ENTERING VALUES IN LSYMB
;-1 TAKING VALUES OUT OF LSYMB
LSYMB: BLOCK 1 ;START OF LIBRARY STORAGE
LSYME: BLOCK 1 ;END OF LIBRARY STORAGE
OBJDEV: BLOCK 1 ;DEVICE NAME
OBJNAM: BLOCK 1 ;FILE "
OBJEXT: BLOCK 1 ;EXTENSION
EZCOR:
IFNDEF NONREN, <RELOC>
END