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monitor-sources/postld.mac
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; Edit= 9148 to POSTLD.MAC on 21-Feb-90 by GSCOTT
;Update copyright date.
; Edit= 9104 to POSTLD.MAC on 8-Jun-89 by GSCOTT
;Set SYSTAD by using GTAD in POSTLD, not by getting the last write date of
;MON:VERSIO.MAC which may be months or years old.
; UPD ID= 8598, RIP:<7.MONITOR>POSTLD.MAC.8, 11-Feb-88 16:57:44 by GSCOTT
;TCO 7.1218 - Update copyright date.
; UPD ID= 8463, RIP:<7.MONITOR>POSTLD.MAC.7, 5-Feb-88 11:05:26 by GSCOTT
;TCO 7.1216 - Output a "*" in column 1 of the BUGSTRINGS.TXT file if the bug
; is not normally dumpable by DOB.
; UPD ID= 8380, RIP:<7.MONITOR>POSTLD.MAC.6, 24-Jan-88 23:28:18 by GSCOTT
;More of TCO 7.1194 - Previous edit's use of $PNEW or $PBGN whichever is larger
; was damaged. Use $PNEW each time instead. Add check for just ENCOD causing
; the overflow (rather than other PSECTs causing an overflow that caused ENCOD
; to overflow).
; UPD ID= 8379, RIP:<7.MONITOR>POSTLD.MAC.5, 22-Jan-88 19:56:56 by GSCOTT
;More of TCO 7.1194 - Previous edit left section number in bad place.
; UPD ID= 8364, RIP:<7.MONITOR>POSTLD.MAC.3, 22-Jan-88 10:53:40 by GSCOTT
;TCO 7.1194 - Fix NPVAR if ENCOD overlaps it.
; *** Edit 7215 to POSTLD.MAC by GRANT on 20-Dec-85, for SPR #20966
; Insure that DDT gets the correct start address for the symbol table
; UPD ID= 2302, SNARK:<6.1.MONITOR>POSTLD.MAC.12, 19-Jul-85 16:41:20 by MOSER
;TCO 6.1.1492 - MORE JFNS NO SZCOD
; UPD ID= 2170, SNARK:<6.1.MONITOR>POSTLD.MAC.11, 5-Jun-85 10:50:00 by MCCOLLUM
;TCO 6.1.1406 - Update copyright notice.
; UPD ID= 1635, SNARK:<6.1.MONITOR>POSTLD.MAC.10, 14-Mar-85 10:47:32 by GLINDELL
; Fix UPD ID 1621 - forgot to load the value to test!
; UPD ID= 1621, SNARK:<6.1.MONITOR>POSTLD.MAC.9, 12-Mar-85 14:44:26 by GLINDELL
; Add typeout of configuration switches (DEBUG, DCN and NETN) to BUGSTRINGS.
; UPD ID= 1606, SNARK:<6.1.MONITOR>POSTLD.MAC.8, 7-Mar-85 23:17:28 by GLINDELL
;TCO 6.1.1244 - check for no monitor PDV present.
; Also add information on how to debug POSTLD
; UPD ID= 1562, SNARK:<6.1.MONITOR>POSTLD.MAC.7, 24-Feb-85 13:05:43 by GLINDELL
;Remove RET at DOBUGS - not needed any more since 6.0 and 6.1 are split
; UPD ID= 947, SNARK:<6.1.MONITOR>POSTLD.MAC.6, 4-Nov-84 15:31:52 by GLINDELL
;ENCOD is now in XCDSEC
;Add table of contents
; UPD ID= 886, SNARK:<6.1.MONITOR>POSTLD.MAC.5, 15-Oct-84 17:54:55 by GLINDELL
;Type out by how many pages section 0 overflowed, if that happens
;Type out 'SAVING ...' after typeout of POSTLD image format, instead of before
;Make Peter Donahue happy by lowering A%VFST to 735000
; UPD ID= 875, SNARK:<6.1.MONITOR>POSTLD.MAC.4, 12-Oct-84 10:04:24 by GLINDELL
;Make POSTCD section-relative when testing with NRCOD for overlap in PCDSEC
; UPD ID= 871, SNARK:<6.1.MONITOR>POSTLD.MAC.3, 11-Oct-84 10:39:28 by GLINDELL
;Change ST%xxx to SY%xxx because of conflict with SERCOD
; UPD ID= 870, SNARK:<6.1.MONITOR>POSTLD.MAC.2, 11-Oct-84 09:55:15 by GLINDELL
;Rewrite POSTLD for 6.1 address space
; COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION 1976, 1990.
; ALL RIGHTS RESERVED.
;
; 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.
;
; THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE
; AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT
; CORPORATION.
;
; DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS
; SOFTWARE ON EQUIPMENT THAT IS NOT SUPPLIED BY DIGITAL.
SUBTTL Gunnar Lindell 11-Oct-1984
SEARCH PROLOG
TTITLE (POSTLD,, - Postload initialization)
EXTERN MDDBLK,EDDBLK,NBUGP,FREMEM,FAKDDT,DDTPX,DDTPXA
;A note on how to debug POSTLD:
;
;The best way to debug POSTLD is probably to NOT use EDDT in user mode
; but use the standard user DDT. For example:
;
; @GET MON
; @DDT /USE-SECTION:36 ;Cannot use 37 since POSTLD runs there
; Set your breakpoints and then
; 0,,142$G
;
Subttl Table of Contents
; Table of Contents for POSTLD
;
; Section Page
;
;
; 1. List of POSTLD checks . . . . . . . . . . . . . . . . 4
; 2. Symbols and macros . . . . . . . . . . . . . . . . . . 5
; 3. Entry vector and psect tables . . . . . . . . . . . . 6
; 4. POSTLD main code . . . . . . . . . . . . . . . . . . . 9
; 5. Monitor date and time . . . . . . . . . . . . . . . . 10
; 6. Check assembly symbols . . . . . . . . . . . . . . . . 11
; 7. The monitor PDV . . . . . . . . . . . . . . . . . . . 13
; 8. Check psects . . . . . . . . . . . . . . . . . . . . . 16
; 8.1 Section 0 . . . . . . . . . . . . . . . . . . 18
; 8.2 Symbol section . . . . . . . . . . . . . . . . 20
; 8.3 Extended code section . . . . . . . . . . . . 21
; 8.4 Extended data section . . . . . . . . . . . . 23
; 8.5 CHKPSX Worker Routine . . . . . . . . . . . . 24
; 9. Write new psect origins . . . . . . . . . . . . . . . 26
; 10. Sort and output BUGS. . . . . . . . . . . . . . . . . 29
; 11. Make POSTLD image . . . . . . . . . . . . . . . . . . 35
; 12. Copy the symbol tables . . . . . . . . . . . . . . . . 39
; 13. Set up MMAP . . . . . . . . . . . . . . . . . . . . . 41
; 14. Set up EDDT in section 0 . . . . . . . . . . . . . . . 42
; 15. Write the POSTLD image to disk . . . . . . . . . . . . 43
; 16. Subroutines . . . . . . . . . . . . . . . . . . . . . 46
; 17. Variables . . . . . . . . . . . . . . . . . . . . . . 47
SUBTTL List of POSTLD checks
;POSTLD will check various psect boundaries and relationships.
;
; Warnings will be issued if the following relations are not true:
;
; MDDBLK .LT. 0
; EDDBLK .LT. 0
; RSDAT .LE. FFF .LE. RSDATZ
; 0,,XRCOD .EQ. NRCOD
; 0,,XRCOD - 0,,BGPTRZ .GE. NRCODZ - NRCOD - 100000
;
; The symbol table will be truncated unless
; Symbol_table_size .LE. ERCOD - 1 - 10000 - NRVAR
;
; Adjust psect origins unless:
;
; RSCOD .EQ. 1000
; RSCODZ .LT. INCOD
; INCODZ .LT. RSDAT
; RSDATZ .LT. PPVAR
; PPVARZ .LT. RSVAR
; RSVARZ .LT. NRVAR
; NRVARZ .LT. PSVAR
; PSVARZ .LT. JSVAR
; JSVARZ .LT. NRCOD
; NRCODZ .LT. NPVAR
; NPVARZ .LT. 777777
;
; BGSTR .EQ. SYMSEC,,1000
; BGSTRZ .LT. BGPTR
; BGPTRZ .LT. SYPSX
;
; ERCODZ .LT. SYMSEC,,A%VFST
;
; XRCODZ .LT. XNCOD
; XNCODZ .LT. ENCOD
; 0,,ENCODZ .LT. NPVAR
SUBTTL Symbols and macros
;***** A%VFST is the presumed start of BOOT. Nothing above this limit
;***** will be loaded from the EXE file. It would be better if this
;***** value were obtained from the BOOT assembly, but that is not
;***** linked with the monitor build. Hence, this must be changed
;***** manually if BOOT grows. There is a warning in BOOT if A%VFST
;***** changes.
A%VFST=:735000 ;BOOT start
;Define # of words for undefined symbol table growth
SYMPAD==200 ;200 words should do for a long time
;Define location of MDDT variables in XCDSEC
DDTPGA=:DDTPXA ;Mapped 1-1
DDTPG=:DDTPX ;Page #
NPDL==100 ;POSTLD stack size
;Define macros for typeout and error
DEFINE TMSG ($MSG) <
JRST [ HRROI T1,[ASCIZ \$MSG\]
PSOUT%
JRST .+1]
>
DEFINE FMSG ($MSG) <
JRST [ HRROI T2,[ASCIZ \$MSG\]
SETZ T3,
SOUT%
JRST .+1]
>
DEFINE JSERR <ERCAL .JSERR>
DEFINE JSHLT <ERJMP .JSHLT>
SUBTTL Entry vector and psect tables
.ENDPS RSCOD ;End of RSCOD
.PSECT POSTCD ;Put POSTLD in psect POSTCD
POSTLD:: ;Relative 0 in POSTCD
ENTVEC: JRST PLDCOD ;Entry vector/start address
JRST PLDCOD ; reenter
EXP SVNM ; version #
;Generate psect tables
;
;Each psect is given an index, designated by a symbol PSECT'I
; That is an index into the PSTBL that contains a pointer to a
; psect block for each psect.
;
;I.e.
; PSTBL: Ptr to psect0 block
; Ptr to psect1 block
; ....
;
;A psect block contains the following entries
$PNAM==0 ;Ptr to ASCIZ string (name of psect)
$PBGN==1 ;Beginning address of psect
$PEND==2 ;End address of psect
$PLEN==3
$PNEW==4 ;New beginning address of psect
$PFLG==5 ;Flags:
P.PSEU==400000,,0 ;Set if psect is a pseudo psect
;DEFPSX/DEFPS1/DEFPS2 generates an entry in the psect table
;DEFPSX is top level, calls DEFPS1 for each psect in the argument list
DEFINE DEFPSX($PSECT),<
XLIST
IRP $PSECT,<
DEFPS1($PSECT)
>
LIST
>
;DEFPS1 strips off a set of angle brackets, if necessary
DEFINE DEFPS1($PSECT),<DEFPS2($PSECT)>
;DEFPS2 does the work
DEFINE DEFPS2($PSECT,$CODE),<
IFDIF <$CODE><PSEUDO>,<
.PSECT $PSECT
$PSECT'Z=:.-1
$PSECT'L=:$PSECT'Z_-PGSFT
.ENDPS $PSECT
>
$PSECT'I==..PSXN
..PSXN==..PSXN+1
[ POINT 7,[ASCIZ /$PSECT/]
$PSECT
$PSECT'Z
$PSECT'Z - $PSECT + 1
EXP 0
IFIDN <$CODE><PSEUDO>,<EXP P.PSEU>
IFDIF <$CODE><PSEUDO>,<EXP 0>
]
>
PSTBL:
;Execute macro for all psect's
..PSXN=0
;Note: the psect's will be output in the order they appear in the
; macros (i.e. by ascending psect index)
;Section 0
DEFPSX <RSCOD,INCOD,RSDAT,PPVAR>
DEFPSX <RSVAR,NRVAR,<PSVAR,PSEUDO>,<JSVAR,PSEUDO>>
DEFPSX <NRCOD,<NPVAR,PSEUDO>>
;Section 5 (SYMSEC)
DEFPSX <BGSTR,BGPTR,SYPSX,ERCOD>
;Section 6 (XCDSEC)
DEFPSX <XRCOD,XNCOD,ENCOD>
;Section 13
DEFPSX <<ERVAR,PSEUDO>,<ENVAR,PSEUDO>,<EPVAR,PSEUDO>>
SUBTTL POSTLD main code
PLDCOD:
;POSTLD initialization
MOVE P,[IOWD NPDL,PDL] ;Initialize stack pointer
;Section 0 is mapped into the section POSTCD runs in. This will provide
; POSTLD with access to STKVAR routines, RSKP and so forth. It will also
; allow POSTLD to reference RSDAT variables with local references.
MOVE T1,[.FHSLF+FH%EPN,,0] ;From page 0 in section 0
MOVE T2,[.FHSLF+FH%EPN,,PCDSEC*1000] ; to page 0 in POSTCD section
HRRI T3,<NRCODZ/PGSIZ>+1 ; all pages including NRCODZ
HRRI T4,<POSTCD&777777>/PGSIZ ; Get start of POSTCD (section-relative)
CAMLE T3,T4 ; Will PMAP overlap POSTLD itself?
IFNSK. ; -yes,
TMSG <
%Warning: The end of NRCOD is higher than the section-relative start
of POSTLD. Most of monitor section 0 is mapped into the section
POSTLD runs in. This means that all of NRCOD cannot be mapped.
This may cause an illegal read or write in POSTLD. However, if
POSTLD completes, you can be assured that the image produced will
be legal.
>
MOVE T3,T4 ; Truncate NRCOD
ENDIF.
HRLI T3,(PM%CNT!PM%RD!PM%WR!PM%EPN) ;Read/write and repeat count
PMAP% ;Do the mapping
;Now POSTLD can make local references to variables and routines in
; section 0. POSTLD uses this to write values to variables in RSDAT,
; to use subroutines in RSCOD (STKVAR e.g.) and to get the version
; string of the monitor.
CALL RDTAD ;Set date and time of monitor
CALL CHKREL ;Check relationship between symbols
CALL MAKPDV ;Build the monitor PDV
CALL VERPSX ;Verify all psects
CALL WRTPSX ;Write the new psect origins
CALL DOBUGS ;Sort BUGS. and write to BUGSTRINGS.TXT
CALL MAKIMG ;Make section 0 and 1 be like POSTLD image
CALL SETMMP ;Set up MMAP
CALL STEDDT ;Set up EDDT in section 0
CALL SAVIMG ;Save POSTLD image
HALTF% ;All done
JRST .-1 ;Do not allow continue
SUBTTL Monitor date and time
;RDTAD - read date and time of monitor (from VERSIO.MAC)
;[9104] Use the data and time of NOW rather than VERSIO.MAC.
RDTAD: GTAD% ;[9104] Get current system date and time in T1
MOVEM T1,SYSTAD ;[9104] Store in SYSTAD
RET ;[9104] and then return
repeat 0,< ;[9104] This gives dates up to years old
HRROI T1,[ASCIZ /MON/] ;See if MON: is defined
STDEV%
IFSKP. ;Yes
HRROI T2,[ASCIZ /MON:VERSIO.MAC/] ; -then get VERSIO from MON:
ELSE. ;No
HRROI T2,[ASCIZ /VERSIO.MAC/] ; -then get it from DSK:
ENDIF.
MOVX T1,GJ%OLD!GJ%SHT ;Short form, existing file
GTJFN% ;Get jfn on file
IFSKP. ; -file exists,
MOVEI T2,T2 ; Read into T2
MOVEI T3,1 ; one word (date and time last written)
RFTAD% ; Result in T2
RLJFN% ; so release jfn now
NOP ; and ignore error return
MOVE T1,T2 ; Move date and time to T1
ELSE. ; -file does not exist
TMSG <
%VERSIO.MAC not found. Current date and time used.
>
GTAD% ; Get current date and time in T1
ENDIF.
MOVEM T1,SYSTAD ;Store in SYSTAD
RET
> ;[9104] End of REPEAT 0
SUBTTL Check assembly symbols
;CHKREL - check the relationship between various symbols
CHKREL:
;MDDBLK must be in page 0
MOVX T1,MDDBLK
CAIGE T1,PGSIZ
IFSKP.
TMSG <
%Warning: MDDBLK is not in page 0.
>
ENDIF.
;EDDBLK must also be in page 0
MOVX T1,EDDBLK
CAIGE T1,PGSIZ
IFSKP.
TMSG <
%Warning: EDDBLK is not in page 0.
>
ENDIF.
;FFF must be defined inside psect RSDAT. This is for user mode exec DDT.
MOVX T1,FFF
CAIL T1,RSDAT
CAILE T1,RSDATZ
IFNSK.
TMSG <
%Warning: FFF is not defined in psect RSDAT.
>
ENDIF.
;The offset of XRCOD should be the same as the offset of NRCOD
HRRZI T1,XRCOD ;We dont want section # (in left half)
CAIN T1,NRCOD
IFSKP.
TMSG <
%Warning: The offset of XRCOD is not the same as NRCOD.
>
ENDIF.
;Verify that NRCOD will fit into section 1 of the POSTLD image between
; end of BGPTR and beginning of XRCOD. There should also be space for
; the CST's
HRRZI T1,XRCOD ;Get offset of XRCOD
SUBI T1,BGPTRZ ; and subtract end of BGPTR
CAIL T1,<NRCODZ-NRCOD+100000> ;100000 is 4 CST's, 4Meg memory
IFSKP.
TMSG <
%Warning: NRCOD will not fit into section 1 of the POSTLD image.
This can not be fixed up by POSTLD.
>
ENDIF.
RET ;End of CHKREL
SUBTTL The monitor PDV
;MAKPDV - set the monitor PDV
MAKPDV:
;LINK writes a PDV for the monitor. We need the PDV in order to locate
; the symbols. LINK will put the PDV in the symbol psect, right after the
; symbol table.
;
;In order for the monitor to know exactly where the PDV is, there
; is a predefined PDV, at PDVECT. The symbol vector follows immediately
; after the PDV, and both structures are in RSDAT. Having our own PDV
; means that RSDATZ can be trusted at runtime.
;
;What we want to do is:
; 1. Locate the PDV with name MON
; 2. Copy the symbol vector generated by LINK to our own symbol vector
; 3. Remove the PDV that LINK wrote
; 4. Add our own PDV with name MONITR
; 5. Set up PDVSYM and PDVUSY to point to the defined/undefined symbols
; subtable
; 6. Finally verify if the symbol table need to be truncated
;Use P1-P6 for the PDV argument block
MOVEI T1,.POLOC ;Locate a specific PDV
MOVEI T2,P1 ;Argument block is in P1
HRROI T3,[ASCIZ /MON/] ;PDV name to return
MOVEI P1+.POCT1,4 ;Argument block length
MOVEI P1+.POPHD,.FHSLF ;Ourself
MOVEI P1+.POCT2,1 ;Read only 1 PDV (couldnt be any more)
MOVEI P1+.PODAT,Q1 ; into Q1
PDVOP%
JSHLT ;Cannot recover if we cant find the pdv
HRRZ T1,P1+.POCT2 ;Get count of PDVA's returned
SKIPG T1 ;Any found?
IFNSK. ; -no, must give up
TMSG <
?Fatal error: cannot find a PDV for the monitor with name "MON".
This should never occur, please check your link command file.
>
HALTF%
ENDIF.
MOVE P1,Q1 ;PDVA to P1
;Move symbol vectors
MOVE T2,.PVSYM(P1) ;Get address of symbol vector
MOVE T1,(T2) ;Get count word from symbol vector
CAIG T1,7 ;Larger than 7?
IFSKP.
TMSG <
?Fatal error: Symbol vector in PDV is larger than 7 words
>
HALTF%
ENDIF.
MOVE T3,[0,,PDVECT+.PVSYM+1] ;Destination
EXTEND T1,[XBLT] ;Move the symbol vector
;Now remove the PDV that LINK wrote
MOVE Q1,P1 ;Save PDVA for a moment
MOVEI T1,.POREM ;Remove PDVA
MOVEI T2,P1 ;Argument block is in P1-P6
MOVEI P1+.POCT1,6 ;6 words
MOVEI P1+.POPHD,.FHSLF ;Ourselves
SETZB P1+.POCT2,P1+.PODAT ;Clear count and data address
MOVE P1+.POADR,Q1 ;Get PDVA
MOVE P1+.POADE,Q1 ;Ending address
PDVOP%
JSERR ;Not fatal....
;Add our own PDV
MOVEI T1,.POADD ;Add a PDVA
MOVEI T2,P1 ;Argument block is in P1-P6
MOVEI P1+.POCT1,4 ;4 words in argument block
MOVEI P1+.POPHD,.FHSLF ;Ourselves
MOVEI P1+.POCT2,1 ;1 PDVA to add
MOVEI P1+.PODAT,Q1 ;Data in Q1
MOVEI Q1,PDVECT ;Address of our PDV
PDVOP%
JSERR ;Not fatal....
;Set address of monitor PDV
MOVEI T1,PDVECT ;Get address of PDV
MOVEM T1,MONPDV ;Save it for EDDT/MDDT
;Now set up PDVSYM and PDVUSY to contain the address of the respective
; symbol subblocks
MOVE P1,SYMBLK ;Get length of symbol vector
IDIVI P1,3 ;Make int # of subblocks
MOVEI T1,SYMBLK+1 ;Point to first subblock
DO.
MOVE T2,.STDAT(T1) ;Get data type word
LDB T2,[POINTR T2,SY%TYP] ; and extract type field
CAIE T2,.R50D ;Defined symbol?
IFSKP. ; -yes,
MOVEI T3,PDVSYM ; write address to PDVSYM
ELSE. ; -no,
MOVEI T3,PDVUSY ; write address to PDVUSY
ENDIF.
MOVEM T1,(T3) ; and save into the variable
MOVEI T1,3(T1) ;Move to next subblock
SOJG P1,TOP. ;Loop back if more to do
ENDDO.
;Now check if the symbol table need to be truncated
MOVE T1,PDVSYM ;Get defined symbols
MOVEI T2,<<ERCOD & 777777>-1-10000-NRVAR> ;Upper limit on symbol table
LDB T3,[POINTR .STLEN(T1),SY%LEN] ;Get length of symbol table
CAMG T3,T2 ;Symbol table need to be truncated?
IFSKP. ; -yes,
TMSG <
?Error: the symbol table does not fit into section 0 of the POSTLD
image. You have to submit a new build with the psect files
POSTLD will write. The maximum size of the symbol table is
>
CALL OCTOUT ;Output max size in words
TMSG < octal words.
>
ENDIF.
RET ;End of MAKPDV
SUBTTL Check psects
;Define a macro that will simply verify that psect A will end before
; psect B or a specified limit
DEFINE CHKPSX($PSA,$PSB,$LIMIT) <
XLIST
MOVE Q1,PSTBL+$PSA'I
IFB <$LIMIT>,<
MOVE Q2,PSTBL+$PSB'I
>
IFNB <$LIMIT>,<
SETO Q2,
MOVE Q3,[$LIMIT]
>
CALL .CHPSX
LIST
>
;VERPSX - verify all psects for overlaps
VERPSX:
;Output header: monitor name and version string
TMSG <
>
HRROI T1,TSVN ;System name and version string
PSOUT%
TMSG <
- Monitor runtime address space -
Psect Start End Length Free Limit
>
;Verify all the psects
CALL CHSEC0 ;Check section 0
CALL CHSYMS ;Check symbol section
CALL CHXCOD ;Check extended code section
CALL CHXDAT ;Check extended data section
TMSG <
> ;Free line
;Type out # of overflows detected
SKIPE OVRFLW ;Any at all?
IFSKP. ; -no,
TMSG <
No psect overflows detected.
>
ELSE. ; -yes,
TMSG <
? >
MOVEI T1,.PRIOU ; Output to terminal
MOVE T2,OVRFLW ; Get # of overflows
MOVX T3,FLD(^D10,NO%RDX) ; Radix 10
NOUT%
NOP
TMSG < overflow(s) detected.
>
ENDIF.
RET
SUBTTL Check psects -- Section 0
;Start with RSCOD, set its new start address to 1000
CHSEC0: TMSG <
Section 0/1:
>
MOVE Q1,PSTBL+RSCODI ;Point to RSCOD
MOVEI T1,1000 ;RSCOD default starting address
MOVEM T1,$PNEW(Q1) ; and set the new
;Now verify all the psects in section 0
CHKPSX (RSCOD,INCOD)
CHKPSX (INCOD,RSDAT)
CHKPSX (RSDAT,PPVAR)
CHKPSX (PPVAR,RSVAR)
CHKPSX (RSVAR,NRVAR)
CHKPSX (NRVAR,PSVAR)
CHKPSX (PSVAR,JSVAR)
CHKPSX (JSVAR,NRCOD)
CHKPSX (NRCOD,NPVAR)
CHKPSX (NPVAR,<End of section 0>,777777)
;Type out # of free pages in section 0
; Equal to the number of pages remaining after NPVAR, counting the
; new start address of NPVAR
MOVE Q1,PSTBL+NPVARI ;Point to NPVAR
MOVE T1,$PNEW(Q1) ;Get new start address of NPVAR
ADD T1,$PLEN(Q1) ; and add its length
SOJ T1, ; and make end address of new NPVAR
MOVEI T2,777777 ;Highest address in section 0
SUB T2,T1 ;Calculate # of free words in section 0
SKIPL T2 ;If negative, then section 0 overflow
IFSKP. ; -yes, fatal overflow
TMSG <
?Section 0 overflow: rebuild monitor with a smaller configuration.
You need >
MOVMS T2 ; Get magnitude
ADDI T2,PGSIZ-1 ; and round upwards
LSH T2,-^D9 ; and make page number
CALL OCTOUT ; Tell user bad news
TMSG < (octal) additional section 0 pages.
>
ELSE. ; -no, all fits into section 0
LSH T2,-^D9 ; Make page number
TMSG <
There are >
CALL OCTOUT
TMSG < (octal) free pages in section 0.
>
ENDIF.
RET
SUBTTL Check psects -- Symbol section
;Check symbol section
CHSYMS:
;Type out banner
TMSG <
Symbol section (SYMSEC):
>
;Start with BGSTR, set its new start address to SYMSEC,,1000
MOVE Q1,PSTBL+BGSTRI ;Point to BGSTR
MOVE T1,[SYMSEC,,1000] ;Start at SYMSEC,,1000
MOVEM T1,$PNEW(Q1) ; and save
;Now verify psects in symbol section
CHKPSX (BGSTR,BGPTR)
CHKPSX (BGPTR,SYPSX)
;Free line since there will be a gap here
TMSG <
>
;Do ERCOD
;Calculate the new start address
MOVE Q1,PSTBL+ERCODI ;Point to ERCOD
MOVE T1,[SYMSEC,,A%VFST] ;Get BOOT start address, but in SYMSEC
SUB T1,$PLEN(Q1) ;Subtract length of BOOT
TRZ T1,777 ;Make it page even
MOVEM T1,$PNEW(Q1) ; and save as ERCOD start address
;Verify ERCOD
CHKPSX (ERCOD,<BOOT address>,<<SYMSEC,,A%VFST>>)
RET
SUBTTL Check psects -- Extended code section
;Check extended code section
CHXCOD:
;Type out banner
TMSG <
Extended code section (XCDSEC):
>
;Start with XRCOD, set its new start address to XCDSEC,,NRCOD
MOVE Q1,PSTBL+XRCODI ;Point to XRCOD
MOVE Q2,PSTBL+NRCODI ;Point to NRCOD
MOVE T1,$PNEW(Q2) ;Get new start address of NRCOD
HRLI T1,XCDSEC ; and make same offset in XCDSEC start of XRCOD
MOVEM T1,$PNEW(Q1) ; and save
;Verify XRCOD, XNCOD
CHKPSX (XRCOD,XNCOD)
CHKPSX (XNCOD,ENCOD)
;[7.1194] Verify and fix NPVAR if ENCOD overlaps it.
CHKPSX (ENCOD,<Extended code overlays NRCOD>,<<XCDSEC,,<NPVAR-1>>>)
CHENNR: MOVE Q1,PSTBL+ENCODI ;[7.1194] Get index for ENCOD
MOVE Q2,PSTBL+NPVARI ;[7.1194] Get index for NPVAR
MOVE T1,$PLEN(Q1) ;[7.1194] Get length of possibly moved ENCOD
ADD T1,$PNEW(Q1) ;[7.1194] Get new end of possibly moved ENCOD
MOVE T2,$PNEW(Q2) ;[7.1194] Yes, get new beginning of NPVAR
HLL T2,T1 ;[7.1194] Copy section number of ENCOD
CAMGE T1,T2 ;[7.1194] Does it overlap common mapped NPVAR?
IFSKP. ;[7.1194] Yes it does, thank you sir
MOVE T2,$PLEN(Q1) ;[7.1194] Load length of ENCOD
ADDI T2,<PGSIZ-1> ;[7.1194] Round up length
ADD T2,$PNEW(Q1) ;[7.1194] Get start of ENCOD
ANDI T2,777000 ;[7.1194] to section 0 page boundry
CAMN T2,$PBGN(Q2) ;[7.1194] Are moving it back to where it was?
IFSKP. ;[7.1194] No, it really needs to move
AOS OVRFLW ;[7.1194] No, count this as an overflow
TMSG <
ENCOD in XCDSEC overflows NPVAR, which is mapped in all sections
> ;[7.1194] T2 preserved in TMSG
ENDIF. ;[7.1194] End of "we need to really move"
MOVEM T2,$PNEW(Q2) ;[7.1194] Store new NPVAR start address
ADD T2,$PLEN(Q2) ;[7.1194] and add its length
SUBI T2,777777 ;[7.1194] Calculate # of free words in sec 0
IFG. T2 ;[7.1194] If -ive, then section 0 overflow
TMSG <
?Because of ENCOD overflow into commonly mapped NPVAR,
moving NPVAR to causes NPVAR it to overflow section 0.
Rebuild the monitor with a smaller configuration.
You need > ;[7.1194]
ADDI T2,PGSIZ-1 ;[7.1194] Round upwards
LSH T2,-^D9 ;[7.1194] and make page number
CALL OCTOUT ;[7.1194] Let me tell ya sumthin
TMSG < (octal) additional section 0 pages.
> ;[7.1194]
ENDIF. ;[7.1194] Otherwise things are OK.
ENDIF. ;[7.1194]
RET
SUBTTL Check psects -- Extended data section
;CHXDAT - check extended data sectios
CHXDAT:
TMSG <
Extended variables section (RESSEC):
>
;Start with ERVAR, and set its new start address
MOVE Q1,PSTBL+ERVARI ;Point to ERVAR
MOVE T1,[RESSEC,,1000] ;New start address
MOVEM T1,$PNEW(Q1) ; and save it
;Now verify the psects
CHKPSX (ERVAR,ENVAR)
CHKPSX (ENVAR,EPVAR)
CHKPSX (EPVAR,,<<RESSEC,,777777>>)
RET
SUBTTL Check psects -- CHKPSX Worker Routine
;.CHPSX - do the work for CHKPSX
;
;Entry: Q1/ pointer to psect entry for lower psect
; Q2/ pointer to psect entry for higher psect or -1
; Q3/ limit if Q2 = -1
.CHPSX: STKVAR <LIMIT,OVRLAP>
SETOM LIMIT ;Assume no limit present
SKIPGE Q2 ;Is Q2 negative?
MOVEM Q3,LIMIT ; -yes, so there is a limit
SETZM OVRLAP ;No psect overlap so far
MOVE T1,$PEND(Q1) ;Get end of lower psect
SKIPGE T2,LIMIT ;Get limit and check if there is any!
IFSKP. ; -yes, there was
AOS T2 ; make into next free address
ELSE.
MOVE T2,$PBGN(Q2) ; -no, get start of higher psect instead
ENDIF.
CAMGE T1,T2 ;Compare
IFSKP. ; -overlap
SETOM OVRLAP ; ** overlap between these psects **
AOS OVRFLW ; Count it
ENDIF.
;Calculate new psect origin for the higher psect (provided no limit)
SKIPL LIMIT ;Is there a limit set?
IFSKP. ; -no, go ahead and calculate next psect
MOVE T1,$PNEW(Q1) ; New start of lower
MOVE T2,$PLEN(Q1) ; Get length of lower
ADDI T2,<PGSIZ-1> ; and round up to whole pages
TRZ T2,777 ; and clear out page field
ADD T1,T2 ; Add to lower new start address
MOVEM T1,$PNEW(Q2) ; makes new higher start address
ENDIF.
;Now typeout this psect
;
;The display has the following layout:
;
;PSECT Start End Length Free Limit Notes
TMSG < > ;2 spaces
MOVE T1,$PNAM(Q1) ;Get pointer to name of psect
PSOUT%
MOVEI T1,.CHTAB ;Then a <TAB>
PBOUT%
MOVE T2,$PBGN(Q1) ;Start
CALL OCTOUC
MOVE T2,$PEND(Q1) ;End
CALL OCTOUC
MOVE T2,$PLEN(Q1) ;Length
CALL OCTOUC
SKIPL T2,LIMIT ;Get limit value (if there is one)
IFSKP. ; -none,
MOVE T2,$PBGN(Q2) ; use next psect
SOJ T2, ; But only go to the address just before,
; thats the limit
ENDIF.
SUB T2,$PEND(Q1) ; minus end of lower psect
CALL OCTOUC ; is # of free words
SKIPL T2,LIMIT ;Get limit value (if there is any)
CALL OCTOUC ; -yes, type it out
SKIPE OVRLAP ;Overlap for this psect?
TMSG < ** Overlap **>
TMSG <
> ;End typeout with a new line
RET
ENDSV.
SUBTTL Write new psect origins
;WRTPSX - write new psect origins to LNKNEW.CCL and PARNEW.MAC
WRTPSX: STKVAR <LNKJFN,PARJFN>
TMSG <
A potential set of new psect origins will be written into LNKNEW.CCL
and PARNEW.MAC.
>
HRROI T1,[ASCIZ /LNKNEW.CCL/] ;File to open
CALL OUTFIL ;Open outfile
IFNSK. ; -error
TMSG <%Warning: failed to write LNKNEW.CCL
>
RET
ENDIF.
MOVEM T1,LNKJFN ;Save JFN
HRROI T1,[ASCIZ /PARNEW.MAC/] ;For pseudo psects
CALL OUTFIL ;Open outfile
IFNSK. ; -error
TMSG <%Warning: failed to write PARNEW.MAC
>
RET
ENDIF.
MOVEM T1,PARJFN ;Save JFN
;Clear T3 (count word in SOUT%)
SETZ T3,
;Output headers for both files
; T1 has PARJFN
FMSG <;PSECT origins for monitor >
HRROI T2,TSVN ;Name and version string
SOUT%
FMSG <
>
;Do the same for LNKJFN
MOVE T1,LNKJFN
FMSG <;PSECT origins for monitor >
HRROI T2,TSVN ;Name and version string
SOUT%
FMSG <
>
;Loop over PSTBL and write the value in $PNEW to file. If the
; pseudo flag is set, then write it to PARNEW, else to LNKNEW.
MOVSI P1,-..PSXN ;Get # of psects defined
DO. ;LOOP over all psects
MOVE Q1,PSTBL(P1) ; Get psect block pointer
MOVX T1,P.PSEU ; Get pseudo flag
TDNE T1,$PFLG(Q1) ; Is it set?
IFSKP. ; -no, write to LNKNEW
MOVE T1,LNKJFN ; so get the right JFN
FMSG </SET:> ; LINK set psect switch
MOVE T2,$PNAM(Q1) ; Get pointer to psect name
SOUT% ; and put in file
MOVEI T2,":" ; Colon before value
BOUT% ; and put that in file
ELSE. ; -yes, write to PARNEW
MOVE T1,PARJFN ; so get that JFN
MOVE T2,$PNAM(Q1) ; Get pointer to name
SOUT% ; and put name in file
FMSG <=:> ; Before value
ENDIF.
MOVE T2,$PNEW(Q1) ; Get new psect origin
MOVX T3,FLD(^D8,NO%RDX) ; Output in radix 8
NOUT% ; Do it
JSERR ; -report error if there is one
FMSG <
> ; End entry with a CRLF
AOBJN P1,TOP. ; Loop back if more psects to do
ENDDO.
;Now we have to write a psect switch for POSTCD itself into LNKNEW.CCL
; as well as a /SYMSEG switch
MOVE T1,LNKJFN ;Get LNKNEW.CCL
FMSG </SET:POSTCD:>
MOVEI T2,PCDSEC ;POSTCD section #
MOVX T3,FLD(^D8,NO%RDX) ;Radix 8
NOUT%
JSERR
FMSG <750000
/SYMSEG:PSECT:SYPSX/UPTO:>
MOVE Q1,PSTBL+SYPSXI ;Point to symbol table start
MOVE T2,$PNEW(Q1) ;Get start of symbol table
ADD T2,[<<ERCOD & 777777> - 1 - 10000 - NRVAR - SYMPAD>] ;Add max size
MOVX T3,FLD(^D8,NO%RDX) ;Radix 8
NOUT% ;Output it
JSERR
FMSG <
>
;Close the files
MOVE T1,LNKJFN ;LNKNEW.CCL
CLOSF%
JSERR
MOVE T1,PARJFN ;PARNEW.MAC
CLOSF%
JSERR
;All done, return
RET
ENDSV.
SUBTTL Sort and output BUGS.
;DOBUGS - sort all BUGS. and output them to BUGSTRINGS.TXT
DOBUGS: STKVAR <BUGJFN>
TMSG <
Writing sorted bug list >
MOVSI Q1,-NBUGP ;AOBJN ptr to BGPTR's
DO. ;LOOP over all BGPTR's
HRLOI P1,377777 ; Max value
MOVSI Q2,-NBUGP(Q1) ; LOOP between 0 and NBUGP-Q1
HRR Q2,Q1 ; and get start index into RH
DO.
HRRZ T1,Q2 ; Get current index
ADD T1,[BGPTR] ; and make table pointer
HLRZ P2,0(T1) ; Get section # of buginf/chk/hlt
Repeat 1,< ;To be removed when all of monitor is recompiled with new PROLOG
CAILE P2,37 ; Verify section #
JRST DOBUG1 ; -out of range
>
CAIE P2,MSEC1 ; Section 1?
IFSKP. ; -yes, section 1 does not exist in POSTLD,
; so make a section-local address (sec 0
; is mapped into POSTLD section)..
HRRZ P2,0(T1) ; Get section-local address
ELSE. ; -not section 0,
MOVE P2,0(T1) ; so use full 30-bit address
ENDIF.
JUMPE P2,DOBUG1 ; -none, go ahead
DO. ; LOOP until bug name is found
MOVE T2,1(P2) ; Get next word from block
TLNN T2,770000 ; Sixbit?
AOJA P2,TOP. ; -no, loop back until found
ENDDO.
TXC T2,1B0 ; So compare works
CAML T2,P1 ; Smaller than current minimum?
JRST DOBUG1 ; -no, just go ahead
MOVE P1,T2 ; -yes, save new minimum
HRRZ P3,Q2 ; and remember current index
DOBUG1: AOBJN Q2,.+1 ; Skip over ptr to BGSTR
AOBJN Q2,TOP. ; Loop back if more to do
ENDDO.
CAMN P1,[377777,,777777] ;Found a minimum?
JRST DOBUG2 ; -no, only zeroes left
ADD P3,[BGPTR] ; Make pointer to minimum value
HRRZ T1,Q1 ; and pointer to top of table
ADD T1,[BGPTR] ; ..
DMOVE T2,(P3) ; Get value of minimum
EXCH T2,(T1) ; Exchange values
EXCH T2+1,1(T1) ; ...
DMOVEM T2,(P3) ; ...
AOBJN Q1,.+1 ; Skip over pointer to BGSTR
AOBJN Q1,TOP. ; Loop back if more to do
ENDDO.
;Now write the sorted bug table to BUGSTRINGS.TXT
DOBUG2: HRROI T1,[ASCIZ /BUGSTRINGS.TXT/]
CALL OUTFIL ;Open outfile
IFNSK. ; -error,
TMSG <
%Warning: failed to write BUGSTRINGS.TXT
>
RET ; -nothing more to do
ENDIF.
MOVEM T1,BUGJFN ;Save JFN
TMSG <to file >
MOVEI T1,.PRIOU ;To terminal
MOVE T2,BUGJFN
SETZ T3, ;No format control
JFNS%
MOVE T1,BUGJFN ;JFN to T1
HRROI T2,TSVN ;System name and version
SETZ T3, ;Break on NULL
SOUT% ;Go
;Type out feature switches so we know what monitor these BUG. refer to
FMSG <
Switches are: DEBUG=>
MOVX T2,DEBUG
CALL TYPFT ;Type out switch value
FMSG <, DCN=>
MOVX T2,DCN
CALL TYPFT
FMSG <, NETN=>
MOVX T2,NETN
CALL TYPFT
FMSG <
BUGHLT and BUGCHK names and descriptions
"*" indicates that the BUG is not normally dumpable
> ;[7.1216]
;Loop through all of the bugs and write them to the file.
MOVSI Q1,-NBUGP ;AOBJN ptr to sorted BGPTR table
DO. ;LOOP over table
HRRZ Q2,Q1 ; Get current index
ADD Q2,[BGPTR] ; Point to BGPTR entry
HLRZ Q3,0(Q2) ; Get section # of buginf/chk/hlt
Repeat 1,< ;To be removed when all of monitor has been recompiled
CAILE Q3,37 ; Valid section?
JRST DOBUG3 ; -no, out of range
>
CAIE Q3,MSEC1 ; Is it section 1?
IFSKP. ; -yes, remake to section-local (section 0/1
; are mapped into POSTLD section
HRRZ Q3,0(Q2) ; Get section-local part
ELSE. ; -no,
MOVE Q3,0(Q2) ; Get 30-bit bug address
ENDIF.
MOVE P4,Q3 ; Save bug address for typeout
;Output a "*" if the bug is not normally dumpable (if all BUGCHKs or BUGINFs
;are being dumped by DOB).
HRRZ T3,(P4) ;[7.1216] Get the type of bug
CAIE T3,XBGCCHK ;[7.1216] Is it a
CAIN T3,BGCCHK ;[7.1216] a BUGCHK?
JRST DOBUG4 ;[7.1216] Yes
CAIE T3,XBGCINF ;[7.1216] Is it a
CAIN T3,BGCINF ;[7.1216] BUGINF?
JRST DOBUG4 ;[7.1216] Yes
JRST DOBUG5 ;[7.1216] Nope
DOBUG4: MOVE T2,@1(P4) ;[7.1216] Get the config word
TXNE T2,DB%NND ;[7.1216] Is it not normally dumpable?
SKIPA T2,["*"] ;[7.1216] Yes, bug is not normally dumpable
DOBUG5: MOVEI T2," " ;[7.1216] Load a space
BOUT% ;[7.1216] Write it to the file
ERJMP .+1 ;[7.1216] Ignore any error for now
; Find the sixbit bug name and print it out
DO. ; LOOP
MOVE T3,1(Q3) ; Get next word
TLNN T3,770000 ; Is it 6bit?
AOJA Q3,TOP. ; -no, loop back till 6bit is found
ENDDO.
DO.
SETZ T2, ; Now type out name
LSHC T2,6 ; Shift in next character from name
ADDI T2," " ; Make ASCII
BOUT% ; and output to file (JFN still in T1)
JUMPN T3,TOP. ; Continue until all of name is done
ENDDO.
;Output the type of BUG.
HRRZ T3,(P4) ; Get the address in the BUG. instruction
HRROI T2,[ASCIZ / [UNK] /]
CAIE T3,XBUGHLT
CAIN T3,BUGHLT
HRROI T2,[ASCIZ / [HLT] /]
CAIE T3,XBGCCHK
CAIN T3,BGCCHK
HRROI T2,[ASCIZ / [CHK] /]
CAIE T3,XBGCINF
CAIN T3,BGCINF
HRROI T2,[ASCIZ / [INF] /]
MOVEI T3,0
SOUT% ; Output description
MOVE T2,1(Q2) ; Get pointer to associated BGSTR
TLO T2,(61B5) ; and make global bp
SETZ 3,
SOUT% ; Print the string
HRROI T2,[ASCIZ /
/]
SOUT%
;Loop for all of the BUGs
DOBUG3: AOBJN Q1,.+1 ; Skip over BGSTR pointer
AOBJN Q1,TOP. ; Loop back if more to do
ENDDO.
CLOSF ;Close BUGSTRINGS.TXT
NOP ; Ignore error
RET
ENDSV.
;TYPFT - type out feature switch value
;
; T1/ JFN to write on
; T2/ value of switch
;
; Returns with T1 intact
TYPFT: SKIPE T2 ;Switch OFF or ON?
IFSKP. ; OFF
HRROI T2,[ASCIZ /OFF/]
ELSE. ; ON
HRROI T2,[ASCIZ /ON/]
ENDIF.
SETZ T3,
SOUT%
RET
SUBTTL Make POSTLD image
;Define a macro that will map a psect to another section
DEFINE MAPPSX ($PSECT,$SECNR) <
XLIST
MOVE Q1,PSTBL+$PSECT'I
MOVX Q2,$SECNR
CALL .MPPSX
LIST
>
;MAKIMG - make section 0 and 1 look like POSTLD image
;
;The following steps are taken:
; 1. Create section 1
; 2. Move BGSTR and BGPTR there
; 3. Move NRCOD there, write PNRCOD, unmap NRCOD from section 0
; 4. Move XRCOD and XNCOD to section 1
; 5. Move ENCOD to section 1
; 6. Copy symbols to section 0. Write PDVSYM and PDVUSY.
; 7. Move ERCOD to section 0
; 8. Set entry vector
MAKIMG:
;Create section 1
SETZ T1, ;Create section
MOVE T2,[.FHSLF,,1] ;Ourselves,,section 1
MOVX T3,SM%RD!SM%WR!SM%EX!1 ;Allow all accesses', map 1 section
SMAP%
;Map BGSTR/BGPTR into section 1
MAPPSX (BGSTR,1)
MAPPSX (BGPTR,1)
;Move NRCOD into section 1 just after BGPTR
CALL MOVNRC
;Map XRCOD/XNCOD/ENCOD into section 1
MAPPSX (XRCOD,1)
MAPPSX (XNCOD,1)
MAPPSX (ENCOD,1)
;Copy the symbols into section 0
CALL COPSYM
;Map ERCOD into section 0
MAPPSX (ERCOD,0)
;Set monitor entry vector.
; The entry vector is read by BOOT, and used as monitor start address
MOVX T1,.FHSLF ;Ourselves
MOVE T2,[JRST EVGO] ;Main start location
HRRM T2,.JBSA ;Write to job area for compatibility
SEVEC% ;Set entry vector
RET
;.MPPSX - do the work for MAPPSX
;
;Call: Q1/ pointer to psect block
; Q2/ destination section number
.MPPSX: MOVE T1,$PBGN(Q1) ;Get start address of psect
LSH T1,-^D9 ;Make into page #
MOVE T2,T1 ;Copy to T2 to create destination
ANDI T2,777 ;Keep only section-local page #
MOVE T4,Q2 ;Get destination section #
LSH T4,^D9 ;Make into extended page #
TDO T2,T4 ;And into destination page #
HRLI T1,.FHSLF!FH%EPN ;Ourselves, extended page #'s
HRLI T2,.FHSLF!FH%EPN ; -"-
MOVE T3,$PEND(Q1) ;Get end address
SUB T3,$PBGN(Q1) ; minus start address
LSH T3,-^D9 ;# of pages
AOJ T3, ;Adjust
HRLI T3,(PM%CNT!PM%RD!PM%WR!PM%CPY!PM%EPN) ;RD/WR, private, extended
; page #'s
PMAP%
RET
;MOVNRC - move the swappable monitor
;
; 1. Move the swappable monitor from section 0 into section 1
; just after BGPTR. Write the POSTLD image position of NRCOD
; into PNRCOD. Note: we must XBLT NRCOD, and not PMAP it,
; since NRCOD in section 0 will be unmapped as the symbol
; table will overlay it.
;
; 2. Unmap NRCOD from section 0
MOVNRC: MOVEI T1,<NRCODZ-NRCOD+1> ;Length of NRCOD in words
MOVEI T2,NRCOD ;From NRCOD in section 0
MOVE T3,[XWD MSEC1,<<BGPTRZ & 777777> + 1000> & 777000] ;to next page
; after BGPTR in section 1
MOVEM T3,PNRCOD ;Save for PGRINI
EXTEND T1,[XBLT] ;Move NRCOD
;Now unmap NRCOD from section 0
SETO T1, ;Unmap
MOVE T2,[.FHSLF!FH%EPN,,NRCOD/1000] ;Ourselves, from NRCOD
MOVEI T3,<NRCODZ+1-NRCOD+1000>/1000 ;Get length of NRCOD in pages
HRLI T3,(PM%CNT!PM%EPN) ;Set count flag
PMAP% ;Unmap from section 0
RET
SUBTTL Copy the symbol tables
;The symbol tables (undefined and defined) are moved into section 0,
; and are put right after RSVAR, i.e. at the same offset as NRVAR.
;After the move, the PDVSYM and PDVUSY are updated.
;
;Note: the undefined symbols symbol table is always right before the
; defined symbols symbol table.
;Also: we should leave a free space of size SYMPAD before the undefined
; symbol table, since ?DDT will expand that table downwards.
;
;Note: we update .JBSYM and .JBUSY. This is only for FILDDT. FILDDT will
; look for symbols with "physical paging" (i.e. according to EXE directory)
; so if we set up .JBSYM and .JBUSY here as section-0 symbol pointers
; everything will come out well in FILDDT. However, you'd better know that
; you shouldnt use .JBSYM and .JBUSY in the running monitor! Magic,magic...
;If AU is the address of the undefined symbol table, AL the defined,
; and LU and LL are the respective lengths, then
;
; copy from AU to NRVAR+SYMPAD
; # of words = AL-AU+LL
; PDVUSY address = NRVAR+SYMPAD
; PDVSYM address = PDVUSY address+AL-AU
;Ac usage in COPSYM:
; P1/ AU
; P2/ AL
; P4/ LL
;
; Q1/ points to undefined symbol block
; Q2/ points to defined symbol block
COPSYM: MOVE Q1,PDVUSY ;Get address of undefined symbol block
MOVE P1,.STPTR(Q1) ;Get AU
MOVE Q2,PDVSYM ;Get address of defined symbol block
MOVE P2,.STPTR(Q2) ;Get AL
LDB P4,[POINTR .STLEN(Q2),SY%LEN] ;Get LL
;Set up for XBLT: T1/ # of words, T2/ src addr, T3/ dest addr
MOVE T1,P2 ;AL
SUB T1,P1 ; -AU
ADD T1,P4 ; +LL
MOVEI T2,SYMPAD(T1) ;Calculate total length of symbol table
MOVEM T2,SYMLEN ; and save for future use (PGRINI)
MOVE T2,P1 ;From AU
MOVEI T3,NRVAR+SYMPAD ; to section 0 overlaying NRVAR
EXTEND T1,[XBLT] ;Move..
;Fix up PDVUSY and PDVSYM
MOVEI T1,NRVAR+SYMPAD ;Get new dest address
MOVEM T1,.STPTR(Q1) ; and save as new undefined addr
ADD T1,P2 ; +AL
SUB T1,P1 ; -AU
MOVEM T1,.STPTR(Q2) ;Save as new defined addr
;Write FREMEM. PGRINI puts temporary CST's at FREMEM
MOVE T1,SYMLEN ;Get symbol table length
ADDI T1,NRVAR+SYMPAD+1000 ;Get ending address + 1000
TRZ T1,777 ;T1 has next address of next page after table
MOVEM T1,FREMEM ; so save it in FREMEM
;Write SYMSTA and SYMEND. These define the start and end address of the symbol
; tables after they are mapped into SYMSEC by PGRINI.
MOVX T1,<<BGPTRZ+PGSIZ>&VPGNO> ;Start address
MOVEM T1,SYMSTA ;Save it for PGRINI
ADD T1,SYMLEN ;Add length
SOS T1 ; - 1 gives ending address
MOVEM T1,SYMEND ; and save that too for PGRINI
;Now write .JBSYM and .JBUSY
MOVE T1,.STPTR(Q1) ;Get pointer to undefined symbol table
LDB T2,[POINTR .STLEN(Q1),SY%LEN] ;And get length
MOVNS T2 ;Negate
HRLES T2 ; and put into LH
HLL T1,T2 ; and into T1
MOVEM T1,.JBUSY ; -thats the undefined pointer
MOVE T1,.STPTR(Q2) ;Get pointer to defined symbol table
LDB T2,[POINTR .STLEN(Q2),SY%LEN] ;And get length
MOVNS T2 ;Negate
HRLES T2 ; and put into LH
HLL T1,T2 ; and into T1
MOVEM T1,.JBSYM ; -thats the defined pointer
RET
SUBTTL Set up MMAP
;SETMMP - set up MMAP.
;
;POSTLD sets up MMAP with a 1-1 mapping for the psects that are
; present in section 0 of the POSTLD image. This mapping is used
; when paging is first turned on in the monitor. The mapping is
; later redone by PGRINI.
SETMMP: MOVE T1,[0,,RSDATZ] ;All of resident code, and RSDAT
CALL WRMMAP
MOVE T1,[RSVAR,,RSVARZ] ;Resident data too
CALL WRMMAP
MOVEI T1,NRVAR ;All of the symbol table
ADD T1,SYMLEN
HRLI T1,NRVAR
CALL WRMMAP
HRLI T1,ERCOD ;And EDDT
HRRI T1,ERCODZ
CALLRET WRMMAP
;WRMMAP - write to MMAP
;
;Call: T1/ first virtual addr,,last virtual addr
;
;Note: its OK with 18-bit addresses since MMAP describes section 0
; of the monitor
WRMMAP: HLRZ T4,T1 ;Get first virtual address
LSH T4,-PGSFT ;Make page #
HRRZ T3,T1 ;Last VA
LSH T3,-PGSFT ;Make page #
MOVE T1,IMMPTR ;Get immediate prototype pointer
IOR T1,T4 ;Make it point to first VA
DO. ;LOOP
CAMLE T4,T3 ; Beyond last?
RET ; -yes, all done
MOVEM T1,MMAP(T4) ; Put pointer in MMAP
AOJ T1, ; Move to next pointer
AOJA T4,TOP. ; Move to next page and loop
ENDDO.
;Can never get here
SUBTTL Set up EDDT in section 0
;STEDDT - set EDDT's environment to section 0
;
;This is accomplished by JSR'ing to FAKDDT in section 0.
; Since we are running in section PCDSEC, and want to return there,
; set up a little program that run in the AC's.
STEDDT: MOVE 16,[STEDDC,,1] ;Set up to
BLT 16,5 ; move code into AC's 1-5
XJRST [0,,2] ;Get into Ac 2 in section 0
STEDD1: RET ;All done
STEDDC: PHASE 1
0,,FAKDDT ;[Ac 1] Address to JSR to
JSR @1 ;[Ac 2] JSR to EDDT
XJRSTF 4 ;[Ac 3] Return to PCDSEC
0 ;[Ac 4] PC flags
PCDSEC,,STEDD1 ;[Ac 5] PC
DEPHASE
SUBTTL Write the POSTLD image to disk
;SAVIMG - save the POSTLD image as MONITR.EXE
;Define a macro that will build a SSAVE frame on the stack
DEFINE SSEG ($NAME,$START,$END, %LBL) <
XLIST
..NSG=..NSG+2
MOVE Q1,$END
MOVE Q2,$START
HRROI Q3,[ASCIZ /'$NAME/]
JSP P5,.SVPSX
%LBL: LIST
>
..NSG=0 ;Initial value
SAVIMG: TRVAR <SAVJFN,<SAVARG,2>>
SETOM PLDRUN ;Flag that POSTLD has run
MOVX T1,GJ%SHT!GJ%FOU ;Short form, next higher generation
HRROI T2,MONSNM ;Get name to save as
GTJFN%
ERJMP .JSERR ; -on error, type out error message and return
MOVEM T1,SAVJFN ;Save JFN
;Build the arguments to SSAVE. The argument block is built on the stack
HRLI T1,.FHSLF!FH%EPN ;Ourselves, use extended page #'s
MOVEI T2,1(P) ;Point to stack frame
DMOVEM T1,SAVARG ;Save arguments
;Output header
TMSG <
- POSTLD image layout -
Start End Psect
>
;Build the frames on the stack
SSEG (<Page 0 and RSCOD>,[EXP 0],[EXP RSCODZ]) ;Page 0 and RSCOD
SSEG (<INCOD>,[EXP INCOD],[EXP INCODZ])
SSEG (<RSDAT>,[EXP RSDAT],[EXP RSDATZ])
MOVE P1,SYMLEN ;Get symbol table length
ADDI P1,NRVAR+SYMPAD ;Make ending address
SSEG (<Symbol table>,[EXP NRVAR+SYMPAD],P1)
SSEG (<ERCOD>,[<ERCOD & 777777>],[<ERCODZ & 777777>])
SSEG (<BGPTR>,<[XWD MSEC1,<BGSTR & 777777>]>,<[XWD MSEC1,<BGSTRZ & 777777>]>)
SSEG (<BGSTR>,<[XWD MSEC1,<BGPTR & 777777>]>,<[XWD MSEC1,<BGPTRZ & 777777>]>)
MOVE P1,PNRCOD ;Get POSTLD start address of NRCOD
ADDI P1,<NRCODZ-NRCOD> ;Make end address
SSEG (<NRCOD>,PNRCOD,P1)
SSEG (<XRCOD>,<[XWD MSEC1,<XRCOD & 777777>]>,<[XWD MSEC1,<XRCODZ & 777777>]>)
SSEG (<XNCOD>,<[XWD MSEC1,<XNCOD & 777777>]>,<[XWD MSEC1,<XNCODZ & 777777>]>)
SSEG (<ENCOD>,<[XWD MSEC1,<ENCOD & 777777>]>,<[XWD MSEC1,<ENCODZ & 777777>]>)
;All frames built
PUSH P,[0] ;Terminate list with a 0
TMSG <
Saving monitor as >
MOVEI T1,.PRIOU ;To primary output
MOVE T2,SAVJFN ;Get JFN again
SETZ T3, ;No format control
JFNS% ;Type out the filename string
;Now do the actual SAVE
DMOVE T1,SAVARG ;Retrieve JFN and address
SETZ T3,
SSAVE% ;Save the image
ADJSP P,-<..NSG+1> ;Fix up stack
TMSG <
>
RET
ENDTV.
;.SVPSX - does the work for SSEG macro in SAVIMG
;
;Call by JSP P5,.SVPSX
; Q1/ End address
; Q2/ Start address
; Q3/ pointer to ASCIZ name of psect to save
.SVPSX: MOVE T3,Q1 ;Get ending address
LSH T3,-PGSFT ; and make into page number
MOVE T4,Q2 ;Get start address
LSH T4,-PGSFT ; and make into page number
SUBI T3,-1(T4) ;Get count of pages to save
MOVNS T3 ;Negate count
HRLES T3 ; and put into left half
HRRI T3,SS%CPY!SS%RD!SS%EXE!SS%EPN ;Access bits into right half
PUSH P,T3 ;1st word in save frame on stack
PUSH P,T4 ;2nd work (page # to start at) in frame
;Type out pages saved
;
;The display has the following format:
;
;Start End Psect
TMSG <
> ;New line
MOVE T2,Q2 ;Start address
LSH T2,-PGSFT ; and make into page
CALL OCTOUC
MOVE T2,Q1 ;Ending address
LSH T2,-PGSFT ; and make into page
CALL OCTOUC
MOVEI T1,.CHTAB ;Then a TAB
PBOUT%
MOVE T1,Q3 ;Get pointer to name
PSOUT%
JRST (P5) ;Return to caller
SUBTTL Subroutines
;OCTOUT - output an octal number in free format
;OCTOUC - output an octal number in column format
OCTOUT: SKIPA T3,[FLD(^D8,NO%RDX)] ;Free format
OCTOUC: MOVX T3,FLD(^D8,NO%RDX)!NO%LFL!FLD(^D12,NO%COL)
MOVX T1,.PRIOU ;To primary output
NOUT% ;Output it
JSERR ; - tell error, but continue
RET
;OUTFIL - open a file for output.
;
;Input: T1/ pointer to file name
;
;Return +1 if any error, else skip
OUTFIL: STKVAR <JFN>
MOVE T2,T1 ;Move pointer to name into place
MOVX T1,GJ%SHT!GJ%FOU ;Short form, next higher generation
GTJFN% ;Get file
ERJMP .JSERR ; -type out error and return
MOVEM T1,JFN ;Save JFN
MOVX T2,FLD(7,OF%BSZ)!OF%RD!OF%WR
OPENF%
IFJER. ;If error,
CALL .JSERR ; type out error message
MOVE T1,JFN ; and release
RLJFN% ; jfn
NOP
RET
ENDIF.
RETSKP ;Success return with JFN in T1
ENDSV.
;.JSHLT - type out jsys error and halt
.JSHLT: CALL .JSERR ;Type out error
HALTF% ; and halt program
;.JSERR - type out jsys error and return
.JSERR: TMSG <
?Jsys error: >
MOVX T1,.PRIOU ;To primary output
HRLOI T2,.FHSLF ;This fork,,last error
SETZ T3, ;No limit on bytes to transfer
ERSTR% ;Output error message
JFCL
JFCL
TMSG <
>
RET
SUBTTL Variables
PDL: BLOCK NPDL ;Stack
OVRFLW: BLOCK 1 ;Count of psect overlaps
END <3,,ENTVEC> ;End of POSTLD