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PDP-10 Archives
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decuslib20-01
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decus/20-0002/up.tnx
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COMMENT VALID 00006 PAGES
RECORD PAGE DESCRIPTION
00001 00001
00002 00002 First, here is what's left of the file TAILOR
00003 00003 START AT UPWRT
00005 00004
00009 00005 SMTAB: XWD 2,0 BLOCK TYPE (SYMBOLS)
00010 00006
00011 ENDMK
;
;First, here is what's left of the file TAILOR
INTERN SLOF,LOCSM
SLOF: SLOFIL
SIXBIT /REL/
00 ;FOR LOW SEGMENT MODIFICATION
LOCSM: LOCSYM ;TAILORS UP.FAI ROUTINES
;Next, UP.FAI, half TENEXized.
?SEGS__1
?LOWER__0
?UPPER__1
?RENSW__0 ;NOT FOR MAKING A TENEX SEGMENT
IFNDEF GLOBSW,<GLOBSW__0>
TITLE UPPER
BEGIN UPPER1
A__1
B__2
C__3
D__4
E__5
;START AT UPWRT
EXTERNAL JOBSYM
^UPWRT: JSYS RESET
UPGOT: SETZM FIRLOC+11 ;NO 2D SEGMENT SYMBOL TABLE
HRRZ A,JOBSYM ;DELETE SYMBOL TABLE
MOVEI A,-FIRLOC-1(A)
HRRZM A,ASIZ ;SIZE OF SEC. SEG. -1
ADDI A,SEGPAG*1000 ;COMPUTE TOP OF SEGMENT
HRRZM A,FIRLOC+12 ;TOP2 WORD.....
;FIRST BLT THE SEGMENT INTO PLACE
;THEN SAVE IT AWAY WITH SSAVE
MOVE A,[XWD FIRLOC,SEGPAG*1000]
MOVE B, [BLT A ,]
HRR B,FIRLOC+12 ;TOP2 WORD, COMPUTED ABOVE
XCT B
;RESET ENTRY VECTOR
MOVEI A,400000 ;THIS FORK
MOVE B,[JRST 400010] ;ENTRY VECTOR INDICATING JOBSA FOR START
JSYS SEVEC ;SET IT
JFCL ;ERROR??
GTSEG: HRROI A,[ASCIZ/
Type name for segment file,
assembled name is /]
JSYS PSOUT
MOVE B,[XWD 112,11] ;A _ 0 FOR TENEX, 2 FOR T20
CALLI B,41 ;GETTAB
MOVEI B,3 ;FAILED, MUST BE TENEX
LDB B,[POINT 6,B,23] ;3 FOR TENEX, ELSE T20
SETZ A, ;ASSUME TENEX
CAIE B,3 ;RIGHT?
MOVEI A,2 ;NO - T20
MOVE A,[FILXXX]+1(A)
JSYS PSOUT
HRROI A,[ASCIZ/
*/]
JSYS PSOUT
HRLZI A,400003
MOVE B,[XWD 100,101] ;PRIMARY INPUT-OUTPUT
JSYS GTJFN
JRST [HRROI A,[ASCIZ/
Can't GTJFN segment file, try again.
/]
JSYS PSOUT
JRST GTSEG]
HRLI 1,400000 ;THIS FORK
MOVE 2,[XWD -50,520000+SEGPAG]
SETZ 3,
JSYS SSAVE
JSYS RLJFN
JRST [HRROI A,[ASCIZ/
Cant RLJFN segment. This is normal for Tops-20 release 4.
/]
JSYS PSOUT
jrst .+1]
COMMENT
THE INTERNAL SYMBOLS FROM THIS UPPER SEGMENT WILL NOW BE
COPIED INTO THE LOWER SEGMENT .REL FILE, TO PROVIDE UPPER/LOWER
LINKAGES. THIS ELIMINATES THE NEED FOR THE LOADER TO KNOW ANYTHING
ABOUT STRANGE SAIL UPPER SEGMENTS
INIT 1,14 ;INPUT
'DSK '
IBUF
JRST [ PRINT <NO DISK TODAY>
JSYS HALTF]
SETZM SLOF1+2
SETZM SLOF1+3
LOOKUP 1,SLOF1 ;GET SAILOW.REL OR SOMETHING
JRST [PRINT <WHERE IS LOWER?>
JSYS HALTF]
INIT 2,14 ;OUTPUT
'DSK '
XWD OBUF,0
JRST [PRINT <NO DISK TODAY>
JSYS HALTF]
SETZM SLOF+2
SETZM SLOF+3
ENTER 2,SLOF ;PUT SAME
JRST [PRINT <CAN'T MAKE NEW SAILOW>
JSYS HALTF]
HLRE 3,JOBSYM
MOVMS 3
HRRZ 2,JOBSYM
ADD 2,3 ;PAST END OF SYMBOL TABLE
HRRZM 2,JOBFF ;IF NO DDT, LOADER HAS WIPED SYMTAB
INBUF 1,2
OUTBUF 2,2
HLLZS SMTAB ;SOME INITIALIZATION (NOT MUCH)
FOR II_1,4 <
JSP 1,COPY ;COPY FIRST FOUR WORDS (NAME BLOCK)
>
LSH 3,-1 ;#SYMBOLS
MOVE TEMP,[RADIX50 0,UPPER] ;LOOK FOR THIS PROGRAM
LP1: CAMN TEMP,(2)
JRST LOOP
SUBI 2,2
SOJG 3,LP1
HALT ;DIDN'T FIND IT
LOOP: SUBI 2,2 ;BACK UP ONE ENTRY
JSP 6,COPSYM ;COPY ONE ENTRY IF INTERNAL
SOJG 3,LOOP ;GET ALL OF THEM
JSP 6,FORSYM ;FORCE REMAINING OUT
JSP 1,COPY ;COPY REST OF FILE
JRST .-1 ;WILL NOT RETURN ON EOF
COPY: SOSLE IBUF+2 ;INPUT ROUTINE
JRST OKIN
INPUT 1,0 ;SURELY YOU'VE SEEN THESE BEFORE?
STATZ 1,20000 ;EOF?
CALLI 12 ;YES, DONE
STATZ 1,740000 ;ERROR?
JRST [PRINT <INPUT DATA ERROR IN SAILOW UPDATE>
JSYS HALTF]
OKIN: ILDB 4,IBUF+1 ;GET ONE
OUTWD: SOSG OBUF+2 ;OUTPUT ROUTINE
OUTPUT 2,
IDPB 4,OBUF+1
JRST (1)
COPSYM: LDB 4,[POINT 4,(2),3] ;SYMBOL TYPE
JUMPE 4,1(6) ;ANOTHER PROG, QUIT
SKIPE LOCSM ;LOAD ALL IF LOCAL SYMBOLS WANTED
JRST ALLTHM
CAIE 4,1 ;INTERNAL?
JRST (6) ;NO
HRRZ 4,1(2)
CAIGE 4,400000 ;SECOND SEGMENT SYMBOL?
JRST (6) ;NO AGAIN
ALLTHM: AOS SMTAB ;MAKE ROOM FOR 2
AOS 5,SMTAB
HRRZS 5 ;INDEX TO SYMBOL BLOCK
MOVE 4,(2)
MOVEM 4,SMTAB(5)
MOVE 4,1(2) ;MAKE THE TRANSFERS
MOVEM 4,SMTAB+1(5)
CAIGE 5,22 ;FULL?
JRST (6) ;NO, DONE
FORSYM: HRRZ 5,SMTAB ;GET COUNT
JUMPE 5,(6) ;RETURN IF EMPTY
MOVNI 5,2(5) ;FOR BLOCK TYPE AND RELOC WORDS
HRLS 5 ;AOBJN PTR
HRRI 5,SMTAB
OLP: MOVE 4,(5) ;WORD TO GO OUT
JSP 1,OUTWD ;OUT IT GOES
AOBJN 5,OLP ;GET ALL
HLLZS SMTAB
JRST (6) ;THAT'S ALL
SMTAB: XWD 2,0 ;BLOCK TYPE (SYMBOLS)
0 ;NEVER RELOCATE THESE
BLOCK 22 ;ROOM FOR SYMBOLS
IBUF: BLOCK 3
OBUF: BLOCK 3
SLOF1: SIXBIT /LOWER/ ;ALWAYS
SIXBIT /REL/ ;LOWER FOR INPUT
00
DUMPR: BLOCK 2
ASIZ: 0
AONE: XWD FIRLOC,SEGPAG*1000
LIT
FIRLOC:
BEND UPPER1
%FIRLOC:
PHASE SEGPAG*1000 ;MAGIC ....
0 ;400000 (OR WHATEVER FOR TENEX)
REPEAT 10,<-1>
0 ;400011 -- JOBSYM POINTER.
TOP2: 0 ;400012 -- TOP SEC SEG ADDRESS.
INTERNAL %ALLOC