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lnk4.rnd
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.;25-OCT-77
\\
.LM0.RM70.F.J.FLAG CAP.SP1.TS5
<LINK.DOC -- ^CHANGES FROM <V3A(560) TO <V4(765)
.BR
^MARCH 1978
.FG30
^^COPYRIGHT (C) 1976,1978 BY
.BR
DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
.B2
THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND COPIED
ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH THE INCLUSION
OF THE ABOVE
COPYRIGHT NOTICE. ^THIS SOFTWARE OR ANY OTHER COPIES THEREOF MAY NOT
BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY OTHER PERSON.
NO TITLE TO AND OWNERSHIP OF THE SOFTWARE IS HEREBY TRANSFERRED.
.B1
THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT
CORPORATION.
.B1
DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS
SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL\\.
.T <LNK4.DOC
.PG
<LINK.DOC -- ^CHANGES FROM <V3A(560) TO <V4(765)
.BR
^MARCH 1978
.B3
1.0##^^SUMMARY\\
.B1
<LINK IS THE LINKING LOADER FOR THE <DEC<SYSTEM-10. <OVRLAY IS THE OVERLAY
HANDLER FOR THE <DEC<SYSTEM-10.
.B1
<LINK AND <OVRLAY BOTH RUN UNDER <TOPS-10 ^RELEASE 6.03.
.B1
<LINK AND <OVRLAY ARE DOCUMENTED IN THE <DEC<SYSTEM-10 ^USER'S ^GUIDE
AND IN THE <DEC<SYSTEM-10 <LINK ^USER'S ^GUIDE.
.B3.LM0
2.0##^^EXTERNAL CHANGES\\
.LM9.B1.I-4
1.##^^LINK\\ GENERATES AN .<EXE FILE WITH /<SAVE AND /<SSAVE SWITCHES.
.B1.LM20.TS20.I-11
<FORMAT ^FILESPEC/<SAVE OR FILESPEC/<SSAVE.
.B1.I-11
<FUNCTION ^DIRECTS <LINK TO CREATE AN .<EXE FILE WITH THE
GIVEN FILESPEC. /<SAVE PRODUCES A NON-SHARABLE HIGH SEGMENT
AND /<SSAVE PRODUCES A SHARABLE HIGH SEGMENT FOR A TWO SEGMENT PROGRAM.
.B1.I-11
<EXAMPLES *<MYPROG
.BR
*<DSKZ:GOODIE/SAVE/GO
.B1
^DIRECTS <LINK TO SAVE THE LINKED VERSION OF
<MYPROG AS <GOODIE.EXE ON <DSKZ:.
.LM9.B1.I-4
2.##^SUPPORTS <PSECT.
.B1.LM13.I-4
A.##_/<SET
.LM20.TS20.B1.I-11
<FORMAT _/<SET<:NAME:ADDRESS.
.B1
^NAME = .<HIGH., .<LOW., OR A <PSECT NAME.
.B1
^ADDRESS = AN OCTAL ADDRESS, OR A DEFINED SYMBOL.
.B1.I-11
<FUNCTION ^SETS THE LOADING POSITION OF A <PSECT, OR SETS
THE .<HIGH. OR .<LOW. RELOCATION COUNTER.
.B1
^FOR SETTING THE LOADING POSITION OF A <PSECT, NAME IS THE NAME OF THE
<PSECT, AND ADDRESS IS A VIRTUAL MEMORY ADDRESS. ^THE <PSECT WILL
BEGIN AT THE GIVEN ADDRESS.
.B1
^FOR SETTING RELOCATION COUNTERS, NAME GIVES A RELOCATION
COUNTER (.<HIGH. OR .<LOW.), AND ADDRESS GIVES THE VIRTUAL MEMORY
ADDRESS FOR THE COUNTER.
.B1.I-11
<EXAMPLES *_/<SET:A:200000
.BR
*
.B1
^SPECIFIES THAT THE <PSECT NAMED ^A IS TO BE LOADED WITH ITS
ORIGIN AT ADDRESS 200000.
.B1
*_/<SET:.HIGH.:400000
.BR
*
.B1
^SETS THE HIGH SEGMENT RELOCATION COUNTER .<HIGH. TO THE ADDRESS 400000.
.B1.LM13.I-4
B.##_/<SYMSEG
.B1.LM20.TS20.I-11
<FORMAT _/<SYMSEG:PSECT:<NAME
.B1.I-11
<FUNCTION ^PLACES THE SYMBOL TABLE AT THE END OF NAMED
<PSECT SO THAT IT WILL NOT BE
OVERWRITTEN DURING EXECUTION OR DEBUGGING.
.B1.I-11
<EXAMPLES *_/<SYMSEG:PSECT:A
.BR
*
.B1
^PLACES THE SYMBOL TABLE AT THE END OF <PSECT ^A.
.B1.LM20.TS20.I-11
C.##_/<COUNTER
.B1.I-11
<FORMAT _/<COUNTER
.B1.I-11
<FUNCTION ^OUTPUTS TO THE TERMINAL ALL OF THE RELOCATION COUNTER (<PSECT<S) VALUES.
.B1.LM13.I-4
D.##^THE <LINK <MAP FILES WILL CONTAIN BEGINNNING AND END ADDRESSES FOR ALL THE <PSECT<S FOR EACH MODULE.
.B1.I-4
E.##^THREE NEW <PSECT .^REL BLOCKS ARE ADDED. ^THE DESCRIPTIONS OF THESE BLOCK TYPES SUPERSEDE
THE DESCRIPTIONS IN THE <LINK MANUAL.
.B1
^BLOCK TYPE 24#--#<PSECT HEADER BLOCK
.B1.LM20.NF.NJ
^^---------------------------
! 24 ! 3 !
---------------------------
! 0 !
---------------------------
! PSECT NAME !
---------------------------
! ATTRIBUTE ! PSECT INDEX !
---------------------------
! PSECT ORIGIN !
---------------------------\\
.B1.I-7
^BLOCK TYPE 23#--#<PSECT END BLOCK
.B1
---------------------------
! 23 ! 2 !
---------------------------
! ^RELOCATION WORD !
^^---------------------------
! PSECT NAME !
---------------------------
! PSECT BREAK !
---------------------------\\
.B1.I-7
^BLOCK TYPE 22#--#^CHANGE <PSECT BLOCK
.B1
^^---------------------------
! 22 ! 2 !
---------------------------
! 0 !
---------------------------
! PSECT INDEX !
---------------------------\\
.B1.I-7
OR
.B1
^^---------------------------
! 22 ! 2 !
---------------------------
! 0 !
---------------------------
! PSECT NAME !
---------------------------
! PSECT ORIGIN !
---------------------------\\
.B1.LM9.I-4.F.J
3.##^NEW ^ERROR ^MESSAGES:
.B1.LM20.I-11
?<LNKIPX ^INVALID <PSECT INDEX.
.B1.I-11
?<LNKISS ^INSUFFICIENT SPACE FOR SYMBOL TABLE AFTER <PSECT <XXXXXX.
.B1.I-11
?<LNKNPS ^NON-EXISTENT <PSECT SPECIFIED.
.B1.I-11
%<LNKPOV <PSECT OVERLAP OCCURRED: N TO M <PSECTS: <XXXXXX, <YYYYYY.
.B1.I-11
?<LNKRPN ^RELOCATABLE <PSECT NOT IMPLIMENTED#--#_/<SET ^SWITCH REQUIRED FOR <PSECT: <XXXXXX.
.PG.B1.LM9.I-4
4.##^PERFORMANCE ^IMPROVEMENTS
.B1.LM13.I-4
A.##^PREVENT UNNECESSARY CLEARING OF VAST AMOUNT OF CORE AFTER CORE SHUFFLING.
.B1.I-4
B.##^PREVENT <PA1050 FROM COMING BACK INTO CORE AFTER <LINK GETS RID OF IT.
.B1.I-4
C.##^BETTER PAGING AND CORE MANAGEMENT SCHEME FOR LARGE <PSECT<ED PROGRAMS.
.B1.I-4
D.##^PREVENT UNNECESSARY DISK OVERFLOW OF PROGRAMS WITH LARGE ( >128K ) CORE ALLOCATION.
.B1.I-4
E.##<LINK USES <PAGE. <UUO WHENEVER POSSIBLE IN SHUFFLING AND
ZEROING SPACES FOR PERFORMANCE IMPROVEMENT.
.B1.LM9.I-4
5.##^OVERFLOW FILES NOW HAVE STANDARD PROTECTION.
.B1.I-4
6.##^ONE EDIT (37) WAS ADDED TO <OVRLAY.MAC. ^THIS EDIT PREVENTS OUTPUT OF A ERROR MESSAGE
WHEN THE .<OVL AND .<EXE FILE VERSION INCONSISTANCY CHECK FINDS ONE TO HAVE A 0 VERSION NUMBER.
.B1.I-4
7.##<LINK WILL NO LONGER AUTOMATICALLY LOAD LOCAL SYMBOLS INTO AN OVERLAID PROGRAM. ^LOCALS
WILL BE LOADED IF _/<DEBUG, _/<TEST, OR _/<SYMSEG ARE SEEN.
.B1.I-4
8.##^WHEN LOADING <FORTRAN OR <COBOL PROGRAMS WHICH ARE LARGER THAN 256 PAGES, <LINK WILL NOW
AUTOMATICALLY LOAD THE <OTS INTO THE LOW SEGMENT. ^PREVIOUS VERSIONS OF <LINK FAILED WITH THE <LNKHSL
MESSAGE UNLESS USERS EXPLICITELY TYPED _/<OTS:LOW_/SEGMENT:LOW.
.B1.I-4
9.##^BETTER LONG ERROR MESSAGES IN <LNKERR (SAME ONES AS IN THE NEW <LINK MANUAL).
.LM0.B3
3.0##^^KNOWN BUGS AND DEFICIENCIES\\
.B1
<PSECT<ED PROGRAMS WITH GAPS (NON-EXISTENT PAGES) IN THEIR CORE IMAGES MUST GENERATE AN <EXE FILE.
^THE <RUN OR <GET OF THE <EXE FILE WILL SET UP THE CORRECT CORE IMAGE.
.PG.B3.LM0
4.0##^^INSTALLATION INSTRUCTIONS\\
.B1
^THE <LINK SOURCE FILES AS DISTRIBUTED ASSEMBLE AND LOAD INTO
SEVERAL SHARABLE SEGMENTS, WHICH RUN WITHOUT CHANGE ON <KA10, <KI10,
OR <KL10 PROCESSORS. ^THE OVERLAY FACILITY IS A SEPARATE,
UNBUNDLED PRODUCT. ^IT IS DISTRIBUTED ONLY TO THOSE INSTALLATIONS
WHO HAVE COMPLETED A LICENSE AGREEMENT FOR IT.
.B1
^ONLY <.EXE FORMS OF <LINK ARE BEING DISTRIBUTED FOR THIS RELEASE.
^INSTALLATIONS WITHOUT <.EXE FILE SUPPORT MUST REASSEMBLE
<LNKXIT WITH <FTEXE==0 AND RELOAD <LINK.
.B1
^TO INSTALL <LINK VERSION 4 ON YOUR SYSTEM, COPY THE FILES
<LINK.EXE AND <LNK???.EXE FROM THE DISTRIBUTION TAPE TO <SYS:.
^NOTE THAT ALL SEGMENTS MUST BE ON THE SAME DISK STRUCTURE,
BECAUSE <LINK USES PHYSICAL ONLY <GETSEG<S. ^IF YOUR INSTALLATION
IS LICENSED TO USE OVERLAYS, THE ADDITIONAL FILE <OVRLAY.REL
MUST BE PLACED ON <SYS: IN ORDER TO USE THE OVERLAY FACILITY.
.B1
^THE BATCH CONTROL FILE <LINK.CTL CONTAINS ALL NECESSARY
INSTRUCTIONS TO ASSEMBLE AND LOAD <LINK, AND TO PRODUCE
LISTINGS AND STORAGE MAPS. ^IT WILL NORMALLY HAVE TO
BE MODIFIED SLIGHTLY TO CORRESPOND TO THE
INSTALLATION CONFIGURATION.
.B1
^THE FILE <DLINK.REL MAKES A SINGLE SEGMENT VERSION SUITABLE FOR
DEBUGGING. ^THIS VERSION HAS NOT RECEIVED EXTENSIVE TESTING
AND IS THEREFORE NOT SUPPORTED.
.B3
5.0##^^INTERNAL CHANGES\\
.B2
5.1##^CHANGES ^TO ^^LINK\\
.B1.F.J
^ALL CHANGES MADE TO ^^LINK\\ VERSION 3^A(560) TO GENERATE ^^LINK\\ VERSION 4(765) ARE SUMMARIZED BELOW.
.B2.TS10,18,33.LIT
;START OF VERSION 4
;561 DCE 19-Jul-76 SPR 20359
; Fix up returns from F10 subroutines when MIXFOR set
; Routine: LNKLOD
;562 JNG 20-Jul-76 QAR CSM
; Prevent ?ILL MEM REF when searching an indexed library if an
; entry point is encountered that is already partially defined.
; Routines: LNKOLD
;563 JNG 20-Jul-76 QAR U. Chicago
; Prevent erroneous ?LNKIMM message when a module is indeed
; loaded, but not as a result of a /INCLUDE switch (user loaded
; it directly, or it contained entry point(s) which satisfied
; some undefined globals in /SEARCH mode).
; Routines: LNKOLD
;564 JNG 20-Jul-76
; Make LINK assemble properly with MACRO 52.
; Routines: LNKERR, LNKLOG
;565 DCE 21-Jul-76 SPR 20150
; Prevent LINK from doing bad things when loading
; block type 10 with the /ONLY:LOW switch set.
; ROUTINE: LNKOLD
;566 JNG 21-Jul-76 QAR EVS
; Prevent incorrect symbol tables in user's core image and maps
; that indicate that modules end at zero when paging.
; Routines: LNKCOR
;567 JNG 21-Jul-76 QAR SRM
; Prevent ?LNKISP message when a deferred global
; definition is seen for a symbol that is already defined.
; Routines: LNKOLD,LNKLOW
;570 JNG 22-Jul-76 QAR EVS
; Prevent loss of local symbols in DDT symbol table when
; some undefined symbols are present and the LS area is paging.
; Routines: LNKXIT
;571 JNG 19-Sep-76 QAR U. Ill.
; Prevent ?ILL MEM REF when one require file requires another.
; Routines: LNKOLD
;572 JNG 20-Sep-76 QAR EVS
; Make sure LS addr in core before doing POLISH symbol fixup.
; Routines: LNKLOD,LNKOLD
;573 JNG 21-Sep-76 QAR EG&G
; Prevent random USETO when ROOT of a relocatable overlay
; structure has no external symbols.
; Routines: LNKOV2
;574 JNG 30-Sep-76 SPR 20115
; Load OTS into low seg if no high seg exists yet and low
; seg is larger than 128K (256P).
; Routines: LNKLOD
;575 JNG 6-Oct-76 SPR 19781
; On /SAVE/EXECUTE, always specify extension of .LOW to
; the RUN UUO if a two-segment program so the monitor will
; ignore any .EXE file of the same name.
; Routines: LNKXIT
;576 JNG 2-Dec-76
; Correct usage of PT.SGN & PT.OTH in INTTAB hash table.
; Routines: LNKOV2
;577 JNG 6-Dec-76 SPR 21566
; Generate a fixup instead of HALTing when local block names
; are encountered and the LS area is paging to disk.
; Routines: LNKPAR,LNKOLD,LNKCOR
;600 JNG 17-Dec-76
; Change LNKHST &LNKLOW to load with each segment rather than
; assembling with each file. This saves much re-assembling when
; LNKHST is changed. Also change to use REL:SCAN.REL.
; Routines: LNKHST,LNKPAR,LNKLOW,LNKEXO,LNKSCN,LNKINI,*.CCL
;601 JNG 19-Dec-76 SPR 10-21427
; Print the correct version in the map if a /VERSION switch
; has been seen.
; Routines: LNKMAP
;602 JNG 19-Dec-76 SPR 10-21535
; Ignore ASCII text in non-loaded library modules.
; Routines: LNKNEW
;603 JNG 19-Dec-76
; Delete redundant assembly parameter PPDL, use LN.PPD
; everywhere.
; Routines: LNKPAR,LNKOLD
;604 JNG 20-Dec-76 QAR LSS
; Handle device NUL: correctly in all cases.
; Routines: LNKCOR,LNKFIO,LNKINI,LNKMAP
;605 JNG 21-Dec-76 QAR EJW
; Use OUTSTR's instead of OUTCHR's to TTY whenever possible.
; Routines: LNKLOD,LNKLOG,LNKOV1,LNKWLD
;606 JNG 21-Dec-76
; Get the protection of .HGH and .XPN files right.
; Routines: LNKXIT
;607 JNG 7-Jan-77 QAR PMH
; Make /HELP work on TOPS-20.
; Routines: LNKINI
;610 JNG 15-Jan-77 SPR 10-21730
; Modify file spec defaulting routines to handle ersatz devices
; correctly (e.g. [1,2,3]/DEFAULT:INPUT, then REL:HELPER
; as an explicit file spec).
; Routines: LNKFIO,LNKWLD
;611 DMN 21-Jan-77
; Add support for COBOL-74.
; Routines: LNKPAR,LNKMAP,LNKLOD,LNKERR
;612 JNG 22-Jan-77 QAR JBS
; Fix various polish bugs when a symbol is defined via a
; polish string, esp. if it is then referenced in another.
; Routines: LNKOLD,LNKLOD
;613 JNG 23-Jan-77 SPR 10-21868
; Load all user-defined default libraries before considering
; system default libraries so FOROTS will always go into the
; right segment.
; Routines: LNKLOD
;614 JNG 23-Jan-77
; Re-search FORLIB if more FORTRAN code is seen in ALGLIB.
; Routines: LNKLOD.
;615 JNG 23-Jan-77
; Never load blank file specs (broken by edit 610).
; Routines: LNKWLD
;616 JNG 23-Jan-77 SPR 10-21881
; Give a better error message than HALT if RENAMEs fail
; in LNKXIT.
; Routines: LNKXIT
;617 JNG 5-Feb-77
; Fix .REQUEST/.REQUIRE and /OVERLAY (broken by 610 and 615).
; Routines: LNKWLD
;620 JNG 6-Feb-77
; When merging a corrected file spec, don't overwrite the old
; device unless a new device was specified.
; Routines: LNKWLD
;621 MCHC 1-NOV-76
; /SAVE and /SSAVE switches generate an EXE file.
; /SAVE and /SSAVE no longer takes any argument.
; The code for generating .SHR/.HGH/.LOW is
; under conditional assembly FTEXE==0.
;622 MCHC 21-JAN-77
; Don't do HJBSET if there is no high seg.
; LNKXIT
;623 JNG 7-Feb-77 SPR 10-21908
; Don't blow up on two /PLOT switches
; Routines: LNKOV1
;624 JNG 23-Feb-77 SPR 10-21900
; Add a long message for ?LNKKIA.
; Routines: LNKERR
;625 JNG 24-Feb-77 SPR 10-21899
; Print an extra blank line in the log file after the ELN message.
; Routines: LNKPAR,LNKLOG,LNKOV1
;626 JNG 25-Feb-77 SPR 10-21898
; Don't search bound globals when a partial definition is seen
; Routines: LNKOLD
;627 JNG 27-Feb-77 SPR 10-21896
; Always type entire list of defining link numbers on %LNKARL
; message, even if list takes more than 5 character to type.
; Routines: LNKOV2
;630 JNG 27-Feb-77 SPR 10-21895
; Don't forget INCLUDEd or EXCLUDEd files after asking
; the user to correct an incorrect file specification.
; Routines: LNKLOD
;631 JNG 27-Feb-77 SPR 10-21894
; Print the correct file spec in the LNKEOV message.
; Routines: LNKOV1
;632 JNG 28-Feb-77
; Fix $LOCATION to always work, and add $FIXUP.
; Routines: LNKCOR,LNKLOD,LNKOLD,LNKOV1
;633 JNG 14-Mar-77
; Don't point any fixups at a Polish string until we're sure
; we want the Polish (might be /ONLY, non-loaded local, etc.)
; Routines: LNKOLD
;634 JNG 7-Apr-77 SPR 10-22464
; Never delete the user's input file on a fatal error, even
; if its extension is .TMP.
; Routines: LNKLOG
;635 JNG 10-Apr-77 SPR 10-22351
; Handle too many %LNKARL messages gracefully. This edit
; adds the /ARSIZE switch and the %LNKTMA and ?LNKABT
; messages.
; Routines: LNKPAR,LNKLOW,LNKINI,LNKOV1,LNKOV2,LNKSUB,LNKERR
;636 JNG 17-Apr-77
; Make TTYIT preserve T1, avoid ^H's to the TTY.
; Routines: LNKINI
;637 JNG 17-Apr-77
; Always give batch jobs the continuation error text on fatal
; errors, since there is no user to type "continue".
; Routines: LNKLOG
;640 JNG 17-Apr-77
; Avoid further disk overflow in LNKMAP if possible.
; Routines: LNKMAP,LNKCOR
;641 MCHC 10-FEB-77
; Always do HC.OUT of what's in core to ensure updated vestigial
; JOBDAT before generating an EXE file.
; LNKXIT
;642 MCHC 11-FEB-77
; Uses EXE file extension for the disk file generated as result of
; not having enough core (in JBNC).
; LNKXIT
;643 MCHC 15-FEB-77
; Fix bug with switch settings of P4, used to indicated an
; EXE directory entry whould be output in XCMPRL routine.
;644 MCHC 15-FEB-77
; Don't do JSYS 147(RESET) if EXIT rather than START is requested.
; This prevent PA1050 to come back into core.
; LNKXIT (TOPS20==1)
;645 MCHC 10-MAR-77
; While expanding LC to accomodate the symbol table at end
; and there is no more core (error return from LNKCOR) and no paging yet
; in LSREQ, page out to disk for the first time.
; LNKXIT.
;646 MCHC 10-MAR-77
; Dont touch a high seg page after the high seg is removed in %LOW
; LNKXIT
;647 MCHC 26-Apr-77
; Don't clear unneeded memory in LNKXIT (better VM performance)
; Routines: LNKXIT
;650 JNG 28-Apr-77
; Use VM on TOPS-10 if available under FTVM.
; Routines: LNKPAR,LNKLOW,LNKINI,LNKCOR,LNKOLD,LNKLOG,LNKMAP,
; LNKERR,LNKOV1,LNKOV2,LNKXIT,LNKWLD
;651 JNG 2-May-77 SPR 10-22609
; Put the overlay file where the user specifies.
; Routines: LNKOV1
;652 JNG 13-Jun-77 SPR 10-22456
; Avoid bad .SAV file when paging to disk. Much of user's
; program will be overwritten with some word from the program.
; Routines: LNKXIT
;653 JNG 13-Jun-77 SPR 10-22957
; Fix /SYSLIB with an argument. Broken by edit 457.
; Routines: LNKWLD
;654 JNG 15-Jun-77 SPR 10-22528
; Don't lose common block names from local symbol table.
; Routines: LNKLOD,LNKOLD
;655 JNG/JLd 24-Jun-77 SPR 10-23152
; Don't print an erroneous module name in the map when the start
; address is specified with a switch.
; Routines: LNKWLD
;656 JNG 11-Jul-77 QAR JMF
; Don't try to supercede an old output file if we find it
; on the user's library.
; Routines: LNKFIO
;657 JNG 12-Jul-77 QAR JMF
; Don't blow up while trying to delete temp files on a fatal
; error if IO.EMG area doesn't exist.
; Routines: LNKLOG
;660 JNG 12-Jul-77 QAR DMN
; Clear all .LINK storage at the end of each overlay.
; Routines: LNKOV1
;661 JNG 13-Jul-77 QAR BLISS-36
; Make the %LNKMDS message only a warning level (L%W).
; Routines: LNKLOD,LNKERR
;662 JNG 14-Jul-77 QAR DZN
; Update NAMPTR in T.776 so block-structured symbol
; files will work.
; Routines: LNKOLD
;663 JNG 30-Sep-77 SPR 10-24037
; Save GS.FR over LNKCOR call in LNK999.
; Routines: LNK999
;664 JNG 6-Oct-77 QAR Gene Spadi
; Don't destroy last word of bound globals on /NODE:0.
; Routines: LNKOV1
;665 JNG 7-Oct-77
; Fix core management bug with overlays. Broken by edit 650.
; Routines: LNKOV1
;666 JNG 24-Oct-77
; Fix edits 650 and 665, this time for sure.
; Routines: LNKOV1
;667 JNG 25-Oct-77
; Call correct paging routine to move window way up.
; Routines: LNKLOD
;670 JNG 25-Oct-77
; Don't overwrite DY.LNK in core shuffler.
; Routines: LNKCOR
;671 JNG 25-Oct-77 SPR 10-24076
; Don't leave a bad relocation table pointer lying around
; if an overlay has no relocation table or "other" relocation
; table, but the previous overlay did.
; Routines: LNKOV1
;672 JNG 25-Oct-77 QAR JLd
; Handle PPN's in request/require blocks correctly.
; Routines: LNKLOD
;673 JNG 25-Feb-78
; Update all of LINK's error messages to reflect the latest
; LINK manual. The FON, ILI, and LIT messages have been
; replaced by the MSR, IRB, and RBS messages. All of the
; long messages in LNKERR have been replaced by the
; explanation of the error from appendix B of the LINK manual.
; Routines: LNKERR,LNKOLD,LNKLOD
;674 JNG 26-Feb-78
; GETTAB the full path that LINK was run from so we can
; GETSEG our other high segments, even if we were run
; from an SFD. Requires TOPS-10 6.04 or later.
; Routines: LNKPAR,LNKLOW,LNKINI
;675 (Withdrawn)
;676 JNG 26-Feb-78
; Move the POPLP routine from LNKLOW to LNKINI.
; Routines: LNKLOW, LNKINI, LNKCOR
;677 JNG 27-Feb-78
; On TOPS-20, don't load symbols by default if loading
; overlays, since they cause much overhead at runtime.
; They will still be loaded on /SYMSEG or /DEBUG or /TEST.
; Routines: LNKINI,LNKLOD,LNKOV1,LNKOV2,LNKWLD
;700 MCHC 6-MAY-77
; Put in PSECT index check in polish block handling.
; LNKOLD
;701 MCHC 26-May-77
; Check for library search processing in block type 100.
; LNKOLD
;702 MCHC 26-May-77
; Save AC R on stack before a PUSHJ @ in Type 776 processing.
; LNKOLD
;703 MCHC 26-May-77
; Add CBL79, BLISS36, and BASIC-2 to list of compiler types.
;704 MCHC 5-JUL-77
; Don't write out EXE-dir for non-existant pages.
; LNKLOD, LNKXIT
;705 MCHC 6-JUL-77
; Wait for the file to be loaded before doing /SYMSEG.
; LNKWLD
;706 MCHC 26-JUL-77
; Add RC.NTB which contains a pointer to relocation tables that
; are ordered by the order seen by LINK. This is the permanent
; order that will be kept throughout the entire load.
; Any delayed fixups containing PSECT index must be converted
; to the permanent index number by this table.
; LNKLOW, LNKINI, LNKWLD, LNKOLD
;707 MCHC 2-AUG-77
; Keep global fixup chains separate if the first chain doesn't
; come before the new chain.
; LNKOLD
;710 MCHC 2-AUG-77
; Move hiseg to begin at 540000.
; LNKPAR
;711 MCHC 8-AUG-77
; Fix bug in MAP when only 1 PSECT in a module.
; LNKOLD, LNKMAP
;712 MCHC 8-AUG-77
; Add a check for PSECT index when a global is defined and
; stored fixups are being checked.
; LNKLOD
;713 MCHC 12-AUG-77
; Fix bug with a sparse EXE-directory.
; LNKXIT
;714 MCHC 16-AUG-77
; Add PSECT-name as a global symbol having
; origin as its value.
; LNKWLD
;715 MCHC 1-SEP-77
; Modify SYMSEG to to take PSECT name.
; LNKPAR, LNKLOW, LNKWLD, LNKXIT
;716 MCHC 9-SEP-77
; Performance improvements for loading large PSECTed programs:
; 1. When moving the window down, write out what we have
; and read in only as much as LN.WD.
; 2. When moving the window up, and the addr is already
; out on disk, don't bother to expand, just write
; out what we have and read in as much as LN.WD.
; LNKLOD
;717 MCHC 19-SEP-77
; Setup correct LINK addr to give back when reading from disk
; is less than current core size.
; LNKLOD
;720 MCHC 19-SEP-77
; Allow moving up of a block larger than 400000 by separating
; it into two steps.
; Also do the reverse BLT(POP loop) in memory rather than in the
; ACs on -20.
; LNKLOW, LNKCOR
;721 MCHC 19-SEP-77
; Change /SYMSEG to /SYMSEG:PSECT:psectname for taking
; PSECTNAME.
; LNKPAR, LNKWLD
;722 MCHC 20-SEP-77
; Implement PSECT attributes.
; LNKPAR, LNKOLD, LNKXIT
;723 MCHC 20-SEP-77
; Add /UPTO:octalnumber to allow user specification of
; symbol table upper limit.
; If not specified limit default to next PSECT origin.
; If limit > next-PSECT-origin, overlaying will occur.
; LNKPAR, LNKWLD, LNKXIT
;724 MCHC 23-SEP-77
; Check for symbol table range in INGAP routine.
; LNKXIT
;725 MCHC 26-SEP-77
; Fix bug with incrementing process page when writing out
; overlay symbol table into EXE file.
; LNKXIT
;726 MCHC 20-OCT-77
; Fix bug in INGAP routine in LNKXIT.
;727 MCHC 3-NOV-77
; Give "Insufficient space" error message when symbol table
; has to be truncated to avoid overlay into high segment.
; LNKINI, LNKWLD,LNKXIT
;730 MCHC 10-NOV-77
; Allow proper loading of /DEBUG:XXX with /LINK.
; LNKLOW, LNKWLD, LNKOV1
;731 MCHC 17-NOV-77 QAR 10-02191(Stevens)
; Replace SEARCH C with SEARCH MACTEN, UUOSYM.
; Use symbols .SVXXX from UUOSYM.
; LNKPAR, LNKXIT
;732 MCHC 29-NOV-77
; Fix bugs related to loading code into the last page 777.
; LNKPAR, LNKLOW, LNKINI, LNKOLD, LNKXIT
;733 MCHC 30-NOV-77
; Fix bug with allocated high seg pages generating bad EXE format.
; LNKXIT
;734 MCHC 12-DEC-77 Stevens(QAR 10-02197)
; Add KL in CPUs. Do mix code check for KL & KA, and KL & KI.
; LNKPAR, LNKLOD
;735 MCHC 12-DEC-77 Stevens(QAR 10-02198)
; Remove REPEAT 0 around polish operators:
; MAX(20), MIM(21), EQ(22), LNK(23), DEF(24)
; and polish store operators: MOVEM(-7)
; LNKOLD
;736 MCHC 12-DEC-77 Stevens(QAR 10-02203)
; Change overflow file protection to standard protection.
; LNKCOR
;737 MCHC 15-DEC-77
; Clear link list pointer after it's given back
; LNKLOD
;740 PAH 17-DEC-77 Worcester Tech(QAR 10-02183)
; Remove /VERSION switch handling. Add handling of
; F.VER SCAN block field to DVOUT. and DVINP.
; LNKPAR, LNKSCN, LNKWLD, LNKFIO
;741 MCHC 29-DEC-77
; After a new segment is read in core from disk, and fixup chain
; is traversed for possible fixups in to the new segment,
; compare the fixup address with the window range.
; LNKLOD
;742 MCHC 30-DEC-77
; Don't force dump of one page unless first code is over 128k.
; LNKOLD, LNKXIT
;743 MCHC 10-JAN-78 EG&G(QAR 10-02217)
; When calculating offset relative to a block, use symbol .DBM
; LNKOV2
;744 MCHC 10-JAN-78 Worcester Tech(QAR 10-02244)
; Fix bug with EXE-file size calculation for LINK to
; pre-allocate enough blocks.
; LNKXIT
;745 MCHC 11-JAN-78
; Set default symbol table limit to 777777. If .HIGH. encountered,
; the defualt symbol table limit is adjusted to .FRESP+1 words
; before high segment origin.
; LNKPAR, LNKOLD
;746 MCHC 11-JAN-78
; Add a CHKBND routine to check for PSECT overlap right before
; going to LNKXIT.
; LNKLOD
;747 MCHC 18-JAN-78
; After relocation table is sorted, make sure LOWLOC is updated,
; especially if there was no code in .LOW. but space allocated,
; before going to LNKXIT.
; LNKLOD
;750 MCHC 24-JAN-78
; Reserve 2 page windows to allow code to come in that spans
; the page boundary.
; LNKPAR, LNKINI, LNKCOR
;751 MCHC 25-JAN-78
; Fix bug with calculation of space to give back in PG.SD.
; LNKLOD
;752 MCHC 26-JAN-78
; Add code in CPUTST routine to convert a CPU-code from Block 6
; into correct dispatch table offset for inconsistency check
; routines. Also, remove part of edit 734, and make KL check
; same as KI.
; LNKLOD
;753 MCHC 20-FEB-78
; Fix bug in routine SETRCY--save current RC slot, and move to new
; place.
; LNKOLD
;754 MCHC 20-FEB-78
; When LC(or HC) needs to be paged for the first time for adding
; symbol table at end, prevent overflow of LS area.
; LNKXIT
;755 MCHC 22-FEB-78
; Add a table TAB.ZE and some code to allow zeroing of free space
; (the space between TAB.AB and TAB.UB) for only the areas needed,
; meaning either the AB or the UB value was changed. This prevents
; unnecessary BLTs and improves loading performance for medium
; to large programs.
; LNKLOW, LNKCOR
;756 MCHC 22-FEB-78
; Fix bug in PSECT attribute bit definitions.
; LNKPAR
;757 MCHC 22-FEB-78
; Type out value of RC.HL(highest location) rather than RC.CV
; (current value) for overlayable PSECT when doing /COUNTER.
; Dont'clear RC.HL for overlayable PSECTs in Block 5 processing.
; LNKWLD, LNKOLD
;760 MCHC 22-FEB-78
; Expand PSECT overlap checks to check each PSECT with all others.
; LNKXIT
;761 MCHC 22-FEB-78
; Define a relocatable PSECT bit in PSECT attribute. Give error
; if code is generated into PSECT of unknown origin(relocatable
; PSECT not implemented in this version).
; LNKPAR, LNKLOW, LNKWLD, LNKOLD
;762 MCHC 25-FEB-78
; When paging occurs with high LOWLOC value(lowest code addr.),
; read in the right pages at the start of EXE file generation.
; LNKXIT
;763 MCHC 28-FEB-78
; Add block 24 so that:
;
; Block 22 SET PSECT block
; Contains PSECT index(or PSECT name if block 24 not used).
; Used to set the current relocation counters.
; Interspersed in block 1s and block 2s.
; Block 23 PSECT end block
; Contains PSECT name and break.
; A set of block 23s appears at end of a load module.
; Maybe used to order PSECTs, if block 24s are not used.
; Block 24 PSECT header block
; Contains PSECT name, attributes, PSECT index and origin.
; A set of block 24s appears at the start of a load module.
; Creates a relocation counter if needed for this PSECT.
; Orders the PSECTs of a module.
; If block 24s are not used: Block 22 must supply the PSECT name, and
; block 23s are used for ordering. A zero origin in block 22 is
; assumed to be a relocatable PSECT. Thus, /SET switch is required
; to set origin.
; LNKWLD, LNKOLD
;764 MCHC 28-FEB-78
; Update LOWLOC (the lowest location) in GETSST(get start of symbol
; table) routine in case symbol table is lower than code.
; LNKXIT
;765 MCHC 28-FEB-78
; Release on both TOPS-10 and TOPS-20 as LINK version 4(765)
; Routines: All.
.END LIT
.B3.LM0
6.0##<SUGGESTIONS
.B1
^THE FOLLOWING IS A LIST OF SUGGESTIONS ACCUMULATED FROM VARIOUS SOURCES. ^THE APPEARANCE OF A SUGGESTED CHANGE IN THIS LIST DOES NOT IMPLY
ANY COMMITMENT OR INTENT ON THE PART OF <DEC TO IMPLEMENT ANY SUCH CHANGE.
.B1.LM9.I-4
1.##^CHANGE <.JBHGH TO BE RELOCATABLE.
.B1.I-4
2.##<LINK TO SEARCH <REL: FOR LIBRARY FILES IF IT FAILS TO FIND THEM IN <SYS:.
.B3.LM0
[^END OF <LNK4.DOC]