Annotation of gforth/cross.fs, revision 1.86

1.1       anton       1: \ CROSS.FS     The Cross-Compiler                      06oct92py
                      2: \ Idea and implementation: Bernd Paysan (py)
1.30      anton       3: 
1.86    ! anton       4: \ Copyright (C) 1995,1996,1997,1998,1999,2000 Free Software Foundation, Inc.
1.30      anton       5: 
                      6: \ This file is part of Gforth.
                      7: 
                      8: \ Gforth is free software; you can redistribute it and/or
                      9: \ modify it under the terms of the GNU General Public License
                     10: \ as published by the Free Software Foundation; either version 2
                     11: \ of the License, or (at your option) any later version.
                     12: 
                     13: \ This program is distributed in the hope that it will be useful,
                     14: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
                     15: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     16: \ GNU General Public License for more details.
                     17: 
                     18: \ You should have received a copy of the GNU General Public License
                     19: \ along with this program; if not, write to the Free Software
                     20: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
1.1       anton      21: 
1.67      jwilke     22: 0 
                     23: [IF]
                     24: 
                     25: ToDo:
                     26: Crossdoc destination ./doc/crossdoc.fd makes no sense when
                     27: cross.fs is uses seperately. jaw
                     28: Do we need this char translation with >address and in branchoffset? 
                     29: (>body also affected) jaw
                     30: Clean up mark> and >resolve stuff jaw
                     31: 
                     32: [THEN]
1.48      anton      33: 
1.77      jwilke     34: hex
                     35: 
                     36: \ debugging for compiling
                     37: 
                     38: \ print stack at each colon definition
                     39: \ : : save-input cr bl word count type restore-input throw .s : ;
                     40: 
                     41: \ print stack at each created word
                     42: \ : create save-input cr bl word count type restore-input throw .s create ;
                     43: 
                     44: 
                     45: \ \ -------------  Setup Vocabularies
                     46: 
                     47: \ Remark: Vocabulary is not ANS, but it should work...
                     48: 
                     49: Vocabulary Cross
                     50: Vocabulary Target
                     51: Vocabulary Ghosts
                     52: Vocabulary Minimal
                     53: only Forth also Target also also
                     54: definitions Forth
                     55: 
1.78      jwilke     56: : T  previous Ghosts also Target ; immediate
1.77      jwilke     57: : G  Ghosts ; immediate
                     58: : H  previous Forth also Cross ; immediate
                     59: 
                     60: forth definitions
                     61: 
1.78      jwilke     62: : T  previous Ghosts also Target ; immediate
1.77      jwilke     63: : G  Ghosts ; immediate
                     64: 
                     65: : >cross  also Cross definitions previous ;
                     66: : >target also Target definitions previous ;
                     67: : >minimal also Minimal definitions previous ;
                     68: 
                     69: H
                     70: 
                     71: >CROSS
                     72: 
                     73: \ find out whether we are compiling with gforth
                     74: 
                     75: : defined? bl word find nip ;
                     76: defined? emit-file defined? toupper and \ drop 0
                     77: [IF]
                     78: \ use this in a gforth system
                     79: : \GFORTH ; immediate
                     80: : \ANSI postpone \ ; immediate
                     81: [ELSE]
                     82: : \GFORTH postpone \ ; immediate
                     83: : \ANSI ; immediate
                     84: [THEN]
                     85: 
                     86: \ANSI : [IFUNDEF] defined? 0= postpone [IF] ; immediate
                     87: \ANSI : [IFDEF] defined? postpone [IF] ; immediate
                     88: 0 \ANSI drop 1
                     89: [IF]
                     90: : \G postpone \ ; immediate
                     91: : rdrop postpone r> postpone drop ; immediate
                     92: : name bl word count ;
                     93: : bounds over + swap ;
                     94: : scan >r BEGIN dup WHILE over c@ r@ <> WHILE 1 /string REPEAT THEN rdrop ;
                     95: : linked here over @ , swap ! ;
                     96: : alias create , DOES> @ EXECUTE ;
                     97: : defer ['] noop alias ;
                     98: : is state @ 
                     99:   IF ' >body postpone literal postpone ! 
                    100:   ELSE ' >body ! THEN ; immediate
                    101: : 0>= 0< 0= ;
                    102: : d<> rot <> -rot <> or ;
                    103: : toupper dup [char] a [char] z 1+ within IF [char] A [char] a - + THEN ;
                    104: Variable ebuf
                    105: : emit-file ( c fd -- ior ) swap ebuf c! ebuf 1 chars rot write-file ;
                    106: 0a Constant #lf
                    107: 0d Constant #cr
                    108: 
                    109: [IFUNDEF] Warnings Variable Warnings [THEN]
                    110: 
                    111: \ \ Number parsing                                     23feb93py
                    112: 
                    113: \ number? number                                       23feb93py
                    114: 
                    115: Variable dpl
                    116: 
                    117: hex
                    118: Create bases   10 ,   2 ,   A , 100 ,
                    119: \              16     2    10   character
                    120: 
                    121: \ !! protect BASE saving wrapper against exceptions
                    122: : getbase ( addr u -- addr' u' )
                    123:     over c@ [char] $ - dup 4 u<
                    124:     IF
                    125:        cells bases + @ base ! 1 /string
                    126:     ELSE
                    127:        drop
                    128:     THEN ;
                    129: 
                    130: : sign? ( addr u -- addr u flag )
                    131:     over c@ [char] - =  dup >r
                    132:     IF
                    133:        1 /string
                    134:     THEN
                    135:     r> ;
                    136: 
                    137: : s>unumber? ( addr u -- ud flag )
1.78      jwilke    138:     over [char] ' =
                    139:     IF         \ a ' alone is rather unusual :-)
                    140:        drop char+ c@ 0 true EXIT 
                    141:     THEN
1.77      jwilke    142:     base @ >r  dpl on  getbase
                    143:     0. 2swap
                    144:     BEGIN ( d addr len )
                    145:        dup >r >number dup
                    146:     WHILE \ there are characters left
                    147:        dup r> -
                    148:     WHILE \ the last >number parsed something
                    149:        dup 1- dpl ! over c@ [char] . =
                    150:     WHILE \ the current char is '.'
                    151:        1 /string
                    152:     REPEAT  THEN \ there are unparseable characters left
                    153:        2drop false
                    154:     ELSE
                    155:        rdrop 2drop true
                    156:     THEN
                    157:     r> base ! ;
                    158: 
                    159: \ ouch, this is complicated; there must be a simpler way - anton
                    160: : s>number? ( addr len -- d f )
                    161:     \ converts string addr len into d, flag indicates success
                    162:     sign? >r
                    163:     s>unumber?
                    164:     0= IF
                    165:         rdrop false
                    166:     ELSE \ no characters left, all ok
                    167:        r>
                    168:        IF
                    169:            dnegate
                    170:        THEN
                    171:        true
                    172:     THEN ;
                    173: 
                    174: : s>number ( addr len -- d )
                    175:     \ don't use this, there is no way to tell success
                    176:     s>number? drop ;
                    177: 
                    178: : snumber? ( c-addr u -- 0 / n -1 / d 0> )
                    179:     s>number? 0=
                    180:     IF
                    181:        2drop false  EXIT
                    182:     THEN
                    183:     dpl @ dup 0< IF
                    184:        nip
                    185:     ELSE
                    186:        1+
                    187:     THEN ;
                    188: 
                    189: : number? ( string -- string 0 / n -1 / d 0> )
                    190:     dup >r count snumber? dup if
                    191:        rdrop
                    192:     else
                    193:        r> swap
                    194:     then ;
                    195: 
                    196: : number ( string -- d )
                    197:     number? ?dup 0= abort" ?"  0<
                    198:     IF
                    199:        s>d
                    200:     THEN ;
                    201: 
                    202: [THEN]
1.48      anton     203: 
1.52      jwilke    204: hex     \ the defualt base for the cross-compiler is hex !!
1.78      jwilke    205: \ Warnings off
1.52      jwilke    206: 
                    207: \ words that are generaly useful
                    208: 
1.59      pazsan    209: : KB  400 * ;
1.52      jwilke    210: : >wordlist ( vocabulary-xt -- wordlist-struct )
                    211:   also execute get-order swap >r 1- set-order r> ;
                    212: 
                    213: : umax 2dup u< IF swap THEN drop ;
                    214: : umin 2dup u> IF swap THEN drop ;
1.1       anton     215: 
1.23      pazsan    216: : string, ( c-addr u -- )
                    217:     \ puts down string as cstring
                    218:     dup c, here swap chars dup allot move ;
1.5       pazsan    219: 
1.77      jwilke    220: : ," [char] " parse string, ;
                    221: 
1.52      jwilke    222: : SetValue ( n -- <name> )
1.54      pazsan    223: \G Same behaviour as "Value" if the <name> is not defined
                    224: \G Same behaviour as "to" if <name> is defined
1.52      jwilke    225: \G SetValue searches in the current vocabulary
1.68      jwilke    226:   save-input bl word >r restore-input throw r> count
                    227:   get-current search-wordlist
                    228:   IF   drop >r
                    229:        \ we have to set current to be topmost context wordlist
                    230:        get-order get-order get-current swap 1+ set-order
                    231:        r> ['] to execute
1.74      jwilke    232:        set-order
1.68      jwilke    233:   ELSE Value THEN ;
1.52      jwilke    234: 
                    235: : DefaultValue ( n -- <name> )
1.54      pazsan    236: \G Same behaviour as "Value" if the <name> is not defined
                    237: \G DefaultValue searches in the current vocabulary
1.52      jwilke    238:  save-input bl word >r restore-input throw r> count
                    239:  get-current search-wordlist
1.56      pazsan    240:  IF bl word drop 2drop ELSE Value THEN ;
1.1       anton     241: 
                    242: hex
                    243: 
1.52      jwilke    244: \ 1 Constant Cross-Flag        \ to check whether assembler compiler plug-ins are
                    245:                        \ for cross-compiling
                    246: \ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
                    247: 
                    248: : comment? ( c-addr u -- c-addr u )
                    249:         2dup s" (" compare 0=
                    250:         IF    postpone (
                    251:         ELSE  2dup s" \" compare 0= IF postpone \ THEN
                    252:         THEN ;
                    253: 
                    254: \ Begin CROSS COMPILER:
                    255: 
1.74      jwilke    256: \ debugging
1.52      jwilke    257: 
1.74      jwilke    258: 0 [IF]
                    259: 
                    260: This implements debugflags for the cross compiler and the compiled
                    261: images. It works identical to the has-flags in the environment.
                    262: The debugflags are defined in a vocabluary. If the word exists and
                    263: its value is true, the flag is switched on.
                    264: 
                    265: [THEN]
                    266: 
1.77      jwilke    267: >CROSS
                    268: 
1.74      jwilke    269: Vocabulary debugflags  \ debug flags for cross
                    270: also debugflags get-order over
                    271: Constant debugflags-wl
                    272: set-order previous
                    273: 
                    274: : DebugFlag
                    275:   get-current >r debugflags-wl set-current
                    276:   SetValue
                    277:   r> set-current ;
                    278: 
                    279: : Debug? ( adr u -- flag )
                    280: \G return true if debug flag is defined or switched on
                    281:   debugflags-wl search-wordlist
                    282:   IF EXECUTE
                    283:   ELSE false THEN ;
                    284: 
                    285: : D? ( <name> -- flag )
                    286: \G return true if debug flag is defined or switched on
                    287: \G while compiling we do not return the current value but
                    288:   bl word count debug? ;
                    289: 
                    290: : [d?]
                    291: \G compile the value-xt so the debug flag can be switched
                    292: \G the flag must exist!
                    293:   bl word count debugflags-wl search-wordlist
                    294:   IF   compile,
                    295:   ELSE  -1 ABORT" unknown debug flag"
                    296:        \ POSTPONE false 
                    297:   THEN ; immediate
1.54      pazsan    298: 
1.77      jwilke    299: \ \ --------------------       source file
                    300: 
                    301: decimal
                    302: 
                    303: Variable cross-file-list
                    304: 0 cross-file-list !
                    305: Variable target-file-list
                    306: 0 target-file-list !
                    307: Variable host-file-list
                    308: 0 host-file-list !
                    309: 
                    310: cross-file-list Value file-list
                    311: 0 Value source-desc
                    312: 
                    313: \ file loading
                    314: 
                    315: : >fl-id   1 cells + ;
                    316: : >fl-name 2 cells + ;
                    317: 
                    318: Variable filelist 0 filelist !
                    319: Create NoFile ," #load-file#"
                    320: 
                    321: : loadfile ( -- adr )
                    322:   source-desc ?dup IF >fl-name ELSE NoFile THEN ;
                    323: 
                    324: : sourcefilename ( -- adr len ) 
                    325:   loadfile count ;
                    326: 
                    327: \ANSI : sourceline# 0 ;
                    328: 
                    329: \ \ --------------------       path handling from kernel/paths.fs
                    330: 
                    331: \ paths.fs path file handling                                    03may97jaw
                    332: 
                    333: \ -Changing the search-path:
                    334: \ fpath+ <path>        adds a directory to the searchpath
                    335: \ fpath= <path>|<path> makes complete now searchpath
                    336: \                      seperator is |
                    337: \ .fpath               displays the search path
                    338: \ remark I: 
                    339: \ a ./ in the beginning of filename is expanded to the directory the
                    340: \ current file comes from. ./ can also be included in the search-path!
                    341: \ ~+/ loads from the current working directory
                    342: 
                    343: \ remark II:
                    344: \ if there is no sufficient space for the search path increase it!
                    345: 
                    346: 
                    347: \ -Creating custom paths:
                    348: 
                    349: \ It is possible to use the search mechanism on yourself.
                    350: 
                    351: \ Make a buffer for the path:
                    352: \ create mypath        100 chars ,     \ maximum length (is checked)
                    353: \              0 ,             \ real len
                    354: \              100 chars allot \ space for path
                    355: \ use the same functions as above with:
                    356: \ mypath path+ 
                    357: \ mypath path=
                    358: \ mypath .path
                    359: 
                    360: \ do a open with the search path:
                    361: \ open-path-file ( adr len path -- fd adr len ior )
                    362: \ the file is opened read-only; if the file is not found an error is generated
                    363: 
                    364: \ questions to: wilke@jwdt.com
                    365: 
                    366: [IFUNDEF] +place
                    367: : +place ( adr len adr )
                    368:         2dup >r >r
                    369:         dup c@ char+ + swap move
                    370:         r> r> dup c@ rot + swap c! ;
                    371: [THEN]
                    372: 
                    373: [IFUNDEF] place
                    374: : place ( c-addr1 u c-addr2 )
                    375:         2dup c! char+ swap move ;
                    376: [THEN]
                    377: 
                    378: \ if we have path handling, use this and the setup of it
                    379: [IFUNDEF] open-fpath-file
                    380: 
                    381: create sourcepath 1024 chars , 0 , 1024 chars allot \ !! make this dynamic
                    382: sourcepath value fpath
                    383: 
                    384: : also-path ( adr len path^ -- )
                    385:   >r
                    386:   \ len check
                    387:   r@ cell+ @ over + r@ @ u> ABORT" path buffer too small!"
                    388:   \ copy into
                    389:   tuck r@ cell+ dup @ cell+ + swap cmove
                    390:   \ make delimiter
                    391:   0 r@ cell+ dup @ cell+ + 2 pick + c! 1 + r> cell+ +!
                    392:   ;
                    393: 
                    394: : only-path ( adr len path^ -- )
                    395:   dup 0 swap cell+ ! also-path ;
                    396: 
                    397: : path+ ( path-addr  "dir" -- ) \ gforth
                    398:     \G Add the directory @var{dir} to the search path @var{path-addr}.
                    399:     name rot also-path ;
                    400: 
                    401: : fpath+ ( "dir" ) \ gforth
                    402:     \G Add directory @var{dir} to the Forth search path.
                    403:     fpath path+ ;
                    404: 
                    405: : path= ( path-addr "dir1|dir2|dir3" ) \ gforth
                    406:     \G Make a complete new search path; the path separator is |.
                    407:     name 2dup bounds ?DO i c@ [char] | = IF 0 i c! THEN LOOP
                    408:     rot only-path ;
                    409: 
                    410: : fpath= ( "dir1|dir2|dir3" ) \ gforth
                    411:     \G Make a complete new Forth search path; the path separator is |.
                    412:     fpath path= ;
                    413: 
                    414: : path>counted  cell+ dup cell+ swap @ ;
                    415: 
                    416: : next-path ( adr len -- adr2 len2 )
                    417:   2dup 0 scan
                    418:   dup 0= IF     2drop 0 -rot 0 -rot EXIT THEN
                    419:   >r 1+ -rot r@ 1- -rot
                    420:   r> - ;
                    421: 
                    422: : previous-path ( path^ -- )
                    423:   dup path>counted
                    424:   BEGIN tuck dup WHILE repeat ;
                    425: 
                    426: : .path ( path-addr -- ) \ gforth
                    427:     \G Display the contents of the search path @var{path-addr}.
                    428:     path>counted
                    429:     BEGIN next-path dup WHILE type space REPEAT 2drop 2drop ;
                    430: 
                    431: : .fpath ( -- ) \ gforth
                    432:     \G Display the contents of the Forth search path.
                    433:     fpath .path ;
                    434: 
                    435: : absolut-path? ( addr u -- flag ) \ gforth
                    436:     \G A path is absolute if it starts with a / or a ~ (~ expansion),
                    437:     \G or if it is in the form ./*, extended regexp: ^[/~]|./, or if
                    438:     \G it has a colon as second character ("C:...").  Paths simply
                    439:     \G containing a / are not absolute!
                    440:     2dup 2 u> swap 1+ c@ [char] : = and >r \ dos absoulte: c:/....
                    441:     over c@ [char] / = >r
                    442:     over c@ [char] ~ = >r
                    443:     \ 2dup 3 min S" ../" compare 0= r> or >r \ not catered for in expandtopic
                    444:     2 min S" ./" compare 0=
                    445:     r> r> r> or or or ;
                    446: 
                    447: Create ofile 0 c, 255 chars allot
                    448: Create tfile 0 c, 255 chars allot
                    449: 
                    450: : pathsep? dup [char] / = swap [char] \ = or ;
                    451: 
                    452: : need/   ofile dup c@ + c@ pathsep? 0= IF s" /" ofile +place THEN ;
                    453: 
                    454: : extractpath ( adr len -- adr len2 )
                    455:   BEGIN dup WHILE 1-
                    456:         2dup + c@ pathsep? IF EXIT THEN
                    457:   REPEAT ;
                    458: 
                    459: : remove~+ ( -- )
                    460:     ofile count 3 min s" ~+/" compare 0=
                    461:     IF
                    462:        ofile count 3 /string ofile place
                    463:     THEN ;
                    464: 
                    465: : expandtopic ( -- ) \ stack effect correct? - anton
                    466:     \ expands "./" into an absolute name
                    467:     ofile count 2 min s" ./" compare 0=
                    468:     IF
                    469:        ofile count 1 /string tfile place
                    470:        0 ofile c! sourcefilename extractpath ofile place
                    471:        ofile c@ IF need/ THEN
                    472:        tfile count over c@ pathsep? IF 1 /string THEN
                    473:        ofile +place
                    474:     THEN ;
                    475: 
                    476: : compact.. ( adr len -- adr2 len2 )
1.85      pazsan    477:     \ deletes phrases like "xy/.." out of our directory name 2dec97jaw
                    478:     over swap
                    479:     BEGIN  dup  WHILE
                    480:         dup >r '/ scan 2dup 4 min s" /../" compare 0=
                    481:         IF
                    482:             dup r> - >r 4 /string over r> + 4 -
                    483:             swap 2dup + >r move dup r> over -
                    484:         ELSE
                    485:             rdrop dup 1 min /string
                    486:         THEN
                    487:     REPEAT  drop over - ;
1.77      jwilke    488: 
                    489: : reworkdir ( -- )
                    490:   remove~+
                    491:   ofile count compact..
                    492:   nip ofile c! ;
                    493: 
                    494: : open-ofile ( -- fid ior )
                    495:     \G opens the file whose name is in ofile
                    496:     expandtopic reworkdir
                    497:     ofile count r/o open-file ;
                    498: 
                    499: : check-path ( adr1 len1 adr2 len2 -- fd 0 | 0 <>0 )
                    500:   0 ofile ! >r >r ofile place need/
                    501:   r> r> ofile +place
                    502:   open-ofile ;
                    503: 
                    504: : open-path-file ( addr1 u1 path-addr -- wfileid addr2 u2 0 | ior ) \ gforth
                    505:     \G Look in path @var{path-addr} for the file specified by @var{addr1 u1}.
                    506:     \G If found, the resulting path and an open file descriptor
                    507:     \G are returned. If the file is not found, @var{ior} is non-zero.
                    508:   >r
                    509:   2dup absolut-path?
                    510:   IF    rdrop
                    511:         ofile place open-ofile
                    512:        dup 0= IF >r ofile count r> THEN EXIT
                    513:   ELSE  r> path>counted
                    514:         BEGIN  next-path dup
                    515:         WHILE  5 pick 5 pick check-path
                    516:         0= IF >r 2drop 2drop r> ofile count 0 EXIT ELSE drop THEN
                    517:   REPEAT
                    518:         2drop 2drop 2drop -38
                    519:   THEN ;
                    520: 
                    521: : open-fpath-file ( addr1 u1 -- wfileid addr2 u2 0 | ior ) \ gforth
                    522:     \G Look in the Forth search path for the file specified by @var{addr1 u1}.
                    523:     \G If found, the resulting path and an open file descriptor
                    524:     \G are returned. If the file is not found, @var{ior} is non-zero.
                    525:     fpath open-path-file ;
                    526: 
                    527: fpath= ~+
                    528: 
                    529: [THEN]
                    530: 
                    531: \ \ --------------------       include require                 13may99jaw
                    532: 
                    533: >CROSS
                    534: 
                    535: : add-included-file ( adr len -- adr )
                    536:   dup >fl-name char+ allocate throw >r
                    537:   file-list @ r@ ! r@ file-list !
                    538:   r@ >fl-name place r> ;
                    539: 
                    540: : included? ( c-addr u -- f )
                    541:   file-list
                    542:   BEGIN        @ dup
                    543:   WHILE        >r 2dup r@ >fl-name count compare 0=
                    544:        IF rdrop 2drop true EXIT THEN
                    545:        r>
                    546:   REPEAT
                    547:   2drop drop false ;   
                    548: 
                    549: false DebugFlag showincludedfiles
                    550: 
                    551: : included1 ( fd adr u -- )
                    552: \ include file adr u / fd
                    553: \ we don't use fd with include-file, because the forth system
                    554: \ doesn't know the name of the file to get a nice error report
                    555:   [d?] showincludedfiles
                    556:   IF   cr ." Including: " 2dup type ." ..." THEN
                    557:   rot close-file throw
                    558:   source-desc >r
                    559:   add-included-file to source-desc 
                    560:   sourcefilename
                    561:   ['] included catch
                    562:   r> to source-desc 
                    563:   throw ;
                    564: 
                    565: : included ( adr len -- )
                    566:        cross-file-list to file-list
                    567:        open-fpath-file throw 
                    568:         included1 ;
                    569: 
                    570: : required ( adr len -- )
                    571:        cross-file-list to file-list
                    572:        open-fpath-file throw \ 2dup cr ." R:" type
                    573:        2dup included?
                    574:        IF      2drop close-file throw
                    575:        ELSE    included1
                    576:        THEN ;
                    577: 
                    578: : include bl word count included ;
                    579: 
                    580: : require bl word count required ;
                    581: 
1.78      jwilke    582: 0 [IF]
                    583: 
1.77      jwilke    584: also forth definitions previous
                    585: 
                    586: : included ( adr len -- ) included ;
                    587: 
                    588: : required ( adr len -- ) required ;
                    589: 
                    590: : include include ;
                    591: 
                    592: : require require ;
                    593: 
1.78      jwilke    594: [THEN]
                    595: 
1.77      jwilke    596: >CROSS
                    597: hex
                    598: 
                    599: \ \ --------------------        Error Handling                  05aug97jaw
                    600: 
                    601: \ Flags
                    602: 
                    603: also forth definitions  \ these values may be predefined before
                    604:                         \ the cross-compiler is loaded
                    605: 
                    606: false DefaultValue stack-warn           \ check on empty stack at any definition
                    607: false DefaultValue create-forward-warn   \ warn on forward declaration of created words
                    608: 
                    609: previous >CROSS
                    610: 
                    611: : .dec
                    612:   base @ decimal swap . base ! ;
                    613: 
                    614: : .sourcepos
                    615:   cr sourcefilename type ." :"
                    616:   sourceline# .dec ;
                    617: 
                    618: : warnhead
                    619: \G display error-message head
                    620: \G perhaps with linenumber and filename
                    621:   .sourcepos ." Warning: " ;
                    622: 
                    623: : empty? depth IF .sourcepos ." Stack not empty!"  THEN ;
                    624: 
                    625: stack-warn [IF]
                    626: : defempty? empty? ;
                    627: [ELSE]
                    628: : defempty? ; immediate
                    629: [THEN]
                    630: 
1.52      jwilke    631: \ \ GhostNames Ghosts                                  9may93jaw
                    632: 
                    633: \ second name source to search trough list
                    634: 
                    635: VARIABLE GhostNames
                    636: 0 GhostNames !
                    637: 
                    638: : GhostName ( -- addr )
1.79      jwilke    639:     align here GhostNames @ , GhostNames ! here 0 ,
1.52      jwilke    640:     bl word count
                    641:     \ 2dup type space
                    642:     string, \ !! cfalign ?
                    643:     align ;
                    644: 
                    645: \ Ghost Builder                                        06oct92py
                    646: 
                    647: \ <T T> new version with temp variable                 10may93jaw
                    648: 
                    649: VARIABLE VocTemp
                    650: 
                    651: : <T  get-current VocTemp ! also Ghosts definitions ;
                    652: : T>  previous VocTemp @ set-current ;
                    653: 
                    654: hex
                    655: 4711 Constant <fwd>             4712 Constant <res>
                    656: 4713 Constant <imm>             4714 Constant <do:>
1.75      jwilke    657: 4715 Constant <skip>
1.52      jwilke    658: 
                    659: \ iForth makes only immediate directly after create
                    660: \ make atonce trick! ?
                    661: 
                    662: Variable atonce atonce off
                    663: 
1.76      jwilke    664: : NoExec true ABORT" CROSS: Don't execute ghost, or immediate target word" ;
1.52      jwilke    665: 
                    666: : GhostHeader <fwd> , 0 , ['] NoExec , ;
                    667: 
                    668: : >magic ;             \ type of ghost
                    669: : >link cell+ ;                \ pointer where ghost is in target, or if unresolved
                    670:                        \ points to the where we have to resolve (linked-list)
                    671: : >exec cell+ cell+ ;  \ execution symantics (while target compiling) of ghost
                    672: : >end 3 cells + ;     \ room for additional tags
                    673:                        \ for builder (create, variable...) words the
                    674:                        \ execution symantics of words built are placed here
                    675: 
                    676: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
                    677: Variable last-ghost    \ last ghost that is created
                    678: Variable last-header-ghost \ last ghost definitions with header
                    679: 
                    680: : Make-Ghost ( "name" -- ghost )
                    681:   >in @ GhostName swap >in !
                    682:   <T Create atonce @ IF immediate atonce off THEN
                    683:   here tuck swap ! ghostheader T>
                    684:   dup last-ghost !
                    685:   DOES> dup executed-ghost ! >exec @ execute ;
                    686: 
                    687: \ ghost words                                          14oct92py
                    688: \                                          changed:    10may93py/jaw
                    689: 
                    690: : gfind   ( string -- ghost true/1 / string false )
                    691: \ searches for string in word-list ghosts
1.77      jwilke    692:   dup count [ ' ghosts >wordlist ] Literal search-wordlist
1.52      jwilke    693:   dup IF >r >body nip r>  THEN ;
                    694: 
                    695: : gdiscover ( xt -- ghost true | xt false )
                    696:   GhostNames
                    697:   BEGIN @ dup
                    698:   WHILE 2dup
                    699:         cell+ @ dup >magic @ <fwd> <>
                    700:         >r >link @ = r> and
                    701:         IF cell+ @ nip true EXIT THEN
                    702:   REPEAT
                    703:   drop false ;
                    704: 
                    705: VARIABLE Already
                    706: 
                    707: : ghost   ( "name" -- ghost )
                    708:   Already off
1.76      jwilke    709:   >in @  bl word gfind   IF  atonce off Already on nip EXIT  THEN
1.52      jwilke    710:   drop  >in !  Make-Ghost ;
                    711: 
                    712: : >ghostname ( ghost -- adr len )
                    713:   GhostNames
                    714:   BEGIN @ dup
                    715:   WHILE 2dup cell+ @ =
                    716:   UNTIL nip 2 cells + count
1.54      pazsan    717:   ELSE  2drop 
                    718:        \ true abort" CROSS: Ghostnames inconsistent"
                    719:        s" ?!?!?!"
1.52      jwilke    720:   THEN ;
                    721: 
1.78      jwilke    722: : .ghost ( ghost -- ) >ghostname type ;
                    723: 
1.77      jwilke    724: \ ' >ghostname ALIAS @name
1.52      jwilke    725: 
                    726: : forward? ( ghost -- flag )
                    727:   >magic @ <fwd> = ;
                    728: 
1.75      jwilke    729: : undefined? ( ghost -- flag )
                    730:   >magic @ dup <fwd> = swap <skip> = or ;
                    731: 
1.52      jwilke    732: \ Predefined ghosts                                    12dec92py
                    733: 
                    734: ghost 0=                                        drop
                    735: ghost branch    ghost ?branch                   2drop
                    736: ghost (do)      ghost (?do)                     2drop
                    737: ghost (for)                                     drop
                    738: ghost (loop)    ghost (+loop)                   2drop
                    739: ghost (next)                                    drop
                    740: ghost unloop    ghost ;S                        2drop
                    741: ghost lit       ghost (compile) ghost !         2drop drop
                    742: ghost (does>)   ghost noop                      2drop
                    743: ghost (.")      ghost (S")      ghost (ABORT")  2drop drop
                    744: ghost '                                         drop
                    745: ghost :docol    ghost :doesjump ghost :dodoes   2drop drop
1.54      pazsan    746: ghost :dovar                                   drop
1.52      jwilke    747: ghost over      ghost =         ghost drop      2drop drop
                    748: ghost - drop
1.54      pazsan    749: ghost 2drop drop
                    750: ghost 2dup drop
1.52      jwilke    751: 
                    752: \ \ Parameter for target systems                         06oct92py
                    753: 
                    754: \ we define it ans like...
                    755: wordlist Constant target-environment
                    756: 
                    757: VARIABLE env-current \ save information of current dictionary to restore with environ>
                    758: 
                    759: : >ENVIRON get-current env-current ! target-environment set-current ;
                    760: : ENVIRON> env-current @ set-current ; 
1.43      pazsan    761: 
1.48      anton     762: >TARGET
1.43      pazsan    763: 
1.67      jwilke    764: : environment? ( adr len -- [ x ] true | false )
1.52      jwilke    765:   target-environment search-wordlist 
                    766:   IF execute true ELSE false THEN ;
                    767: 
1.67      jwilke    768: : e? bl word count T environment? H 0= ABORT" environment variable not defined!" ;
1.52      jwilke    769: 
1.67      jwilke    770: : has?         bl word count T environment? H 
1.53      jwilke    771:        IF      \ environment variable is present, return its value
                    772:        ELSE    \ environment variable is not present, return false
1.75      jwilke    773:                false \ debug true ABORT" arg" 
1.53      jwilke    774:        THEN ;
1.52      jwilke    775: 
                    776: : $has? T environment? H IF ELSE false THEN ;
1.48      anton     777: 
1.54      pazsan    778: >ENVIRON get-order get-current swap 1+ set-order
                    779: true SetValue compiler
1.83      pazsan    780: true SetValue cross
1.54      pazsan    781: true SetValue standard-threading
                    782: >TARGET previous
1.52      jwilke    783: 
1.77      jwilke    784: 0
                    785: [IFDEF] mach-file mach-file count 1 [THEN]
                    786: [IFDEF] machine-file machine-file 1 [THEN]
                    787: [IF]   included hex drop
                    788: [ELSE]  cr ." No machine description!" ABORT 
                    789: [THEN]
1.43      pazsan    790: 
1.53      jwilke    791: >ENVIRON
                    792: 
1.54      pazsan    793: T has? ec H
                    794: [IF]
                    795: false DefaultValue relocate
                    796: false DefaultValue file
                    797: false DefaultValue OS
                    798: false DefaultValue prims
                    799: false DefaultValue floating
                    800: false DefaultValue glocals
                    801: false DefaultValue dcomps
                    802: false DefaultValue hash
                    803: false DefaultValue xconds
                    804: false DefaultValue header
                    805: [THEN]
                    806: 
                    807: true DefaultValue interpreter
                    808: true DefaultValue ITC
                    809: false DefaultValue rom
1.73      jwilke    810: true DefaultValue standardthreading
1.53      jwilke    811: 
1.52      jwilke    812: >TARGET
1.53      jwilke    813: s" relocate" T environment? H 
                    814: [IF]   SetValue NIL
                    815: [ELSE] >ENVIRON T NIL H SetValue relocate
                    816: [THEN]
1.43      pazsan    817: 
                    818: >CROSS
                    819: 
1.52      jwilke    820: \ \ Create additional parameters                         19jan95py
1.19      pazsan    821: 
1.71      jwilke    822: \ currently cross only works for host machines with address-unit-bits
                    823: \ eual to 8 because of s! and sc!
                    824: \ but I start to query the environment just to modularize a little bit
                    825: 
                    826: : check-address-unit-bits ( -- )       
                    827: \      s" ADDRESS-UNIT-BITS" environment?
                    828: \      IF 8 <> ELSE true THEN
                    829: \      ABORT" ADDRESS-UNIT-BITS unknown or not equal to 8!"
                    830: 
                    831: \      shit, this doesn't work because environment? is only defined for 
                    832: \      gforth.fi and not kernl???.fi
                    833:        ;
                    834: 
                    835: check-address-unit-bits
                    836: 8 Constant bits/byte   \ we define: byte is address-unit
                    837: 
                    838: 1 bits/byte lshift Constant maxbyte 
1.77      jwilke    839: \ this sets byte size for the target machine, (probably right guess) jaw
1.67      jwilke    840: 
1.19      pazsan    841: T
1.71      jwilke    842: NIL                    Constant TNIL
                    843: cell                   Constant tcell
                    844: cell<<                 Constant tcell<<
                    845: cell>bit               Constant tcell>bit
                    846: bits/char              Constant tbits/char
                    847: bits/char H bits/byte T /      
                    848:                        Constant tchar
                    849: float                  Constant tfloat
                    850: 1 bits/char lshift     Constant tmaxchar
                    851: [IFUNDEF] bits/byte
                    852: 8                      Constant tbits/byte
                    853: [ELSE]
                    854: bits/byte              Constant tbits/byte
                    855: [THEN]
1.19      pazsan    856: H
1.81      pazsan    857: tbits/char bits/byte / Constant tbyte
1.71      jwilke    858: 
1.19      pazsan    859: 
1.48      anton     860: \ Variables                                            06oct92py
                    861: 
                    862: Variable image
                    863: Variable tlast    TNIL tlast !  \ Last name field
                    864: Variable tlastcfa \ Last code field
                    865: Variable tdoes    \ Resolve does> calls
                    866: Variable bit$
1.52      jwilke    867: 
                    868: \ statistics                                           10jun97jaw
                    869: 
                    870: Variable headers-named 0 headers-named !
                    871: Variable user-vars 0 user-vars !
                    872: 
1.67      jwilke    873: : target>bitmask-size ( u1 -- u2 )
                    874:   1- tcell>bit rshift 1+ ;
                    875: 
                    876: : allocatetarget ( size --- adr )
                    877:   dup allocate ABORT" CROSS: No memory for target"
                    878:   swap over swap erase ;
1.52      jwilke    879: 
1.54      pazsan    880: \ \ memregion.fs
1.52      jwilke    881: 
                    882: 
                    883: Variable last-defined-region    \ pointer to last defined region
                    884: Variable region-link            \ linked list with all regions
                    885: Variable mirrored-link          \ linked list for mirrored regions
                    886: 0 dup mirrored-link ! region-link !
                    887: 
                    888: 
1.67      jwilke    889: : >rname 6 cells + ;
                    890: : >rbm   5 cells + ;
                    891: : >rmem  4 cells + ;
                    892: : >rlink 3 cells + ;
1.52      jwilke    893: : >rdp 2 cells + ;
                    894: : >rlen cell+ ;
                    895: : >rstart ;
                    896: 
                    897: 
                    898: : region ( addr len -- )                \G create a new region
                    899:   \ check whether predefined region exists 
                    900:   save-input bl word find >r >r restore-input throw r> r> 0= 
                    901:   IF   \ make region
                    902:        drop
                    903:        save-input create restore-input throw
                    904:        here last-defined-region !
                    905:        over ( startaddr ) , ( length ) , ( dp ) ,
1.67      jwilke    906:        region-link linked 0 , 0 , bl word count string,
1.52      jwilke    907:   ELSE \ store new parameters in region
                    908:         bl word drop
                    909:        >body >r r@ last-defined-region !
1.67      jwilke    910:        r@ >rlen ! dup r@ >rstart ! r> >rdp !
1.52      jwilke    911:   THEN ;
                    912: 
                    913: : borders ( region -- startaddr endaddr ) \G returns lower and upper region border
1.67      jwilke    914:   dup >rstart @ swap >rlen @ over + ;
1.52      jwilke    915: 
                    916: : extent  ( region -- startaddr len )   \G returns the really used area
1.67      jwilke    917:   dup >rstart @ swap >rdp @ over - ;
1.52      jwilke    918: 
                    919: : area ( region -- startaddr totallen ) \G returns the total area
1.79      jwilke    920:   dup >rstart @ swap >rlen @ ;
1.52      jwilke    921: 
                    922: : mirrored                              \G mark a region as mirrored
                    923:   mirrored-link
1.68      jwilke    924:   align linked last-defined-region @ , ;
1.52      jwilke    925: 
1.67      jwilke    926: : .addr ( u -- )
                    927: \G prints a 16 or 32 Bit nice hex value
1.52      jwilke    928:   base @ >r hex
                    929:   tcell 2 u>
1.77      jwilke    930:   IF s>d <# # # # # [char] . hold # # # # #> type
1.52      jwilke    931:   ELSE s>d <# # # # # # #> type
                    932:   THEN r> base ! ;
                    933: 
                    934: : .regions                      \G display region statistic
                    935: 
                    936:   \ we want to list the regions in the right order
                    937:   \ so first collect all regions on stack
                    938:   0 region-link @
                    939:   BEGIN dup WHILE dup @ REPEAT drop
                    940:   BEGIN dup
1.67      jwilke    941:   WHILE cr
                    942:         0 >rlink - >r
                    943:         r@ >rname count tuck type
1.52      jwilke    944:         12 swap - 0 max spaces space
1.67      jwilke    945:         ." Start: " r@ >rstart @ dup .addr space
                    946:         ." End: " r@ >rlen @ + .addr space
                    947:         ." DP: " r> >rdp @ .addr
1.52      jwilke    948:   REPEAT drop
1.53      jwilke    949:   s" rom" T $has? H 0= ?EXIT
1.52      jwilke    950:   cr ." Mirrored:"
                    951:   mirrored-link @
                    952:   BEGIN dup
1.67      jwilke    953:   WHILE space dup cell+ @ >rname count type @
1.52      jwilke    954:   REPEAT drop cr
                    955:   ;
                    956: 
                    957: \ -------- predefined regions
                    958: 
                    959: 0 0 region address-space
                    960: \ total memory addressed and used by the target system
                    961: 
                    962: 0 0 region dictionary
                    963: \ rom area for the compiler
                    964: 
1.53      jwilke    965: T has? rom H
1.52      jwilke    966: [IF]
                    967: 0 0 region ram-dictionary mirrored
                    968: \ ram area for the compiler
                    969: [ELSE]
                    970: ' dictionary ALIAS ram-dictionary
                    971: [THEN]
                    972: 
                    973: 0 0 region return-stack
                    974: 
                    975: 0 0 region data-stack
                    976: 
                    977: 0 0 region tib-region
                    978: 
                    979: ' dictionary ALIAS rom-dictionary
                    980: 
                    981: 
                    982: : setup-target ( -- )   \G initialize targets memory space
1.53      jwilke    983:   s" rom" T $has? H
1.52      jwilke    984:   IF  \ check for ram and rom...
1.72      jwilke    985:       \ address-space area nip 0<>
1.67      jwilke    986:       ram-dictionary area nip 0<>
                    987:       rom-dictionary area nip 0<>
1.72      jwilke    988:       and 0=
1.52      jwilke    989:       ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
                    990:   THEN
                    991:   address-space area nip
                    992:   IF
                    993:       address-space area
                    994:   ELSE
                    995:       dictionary area
                    996:   THEN
1.67      jwilke    997:   nip 0=
1.52      jwilke    998:   ABORT" CROSS: define at least address-space or dictionary!!"
1.67      jwilke    999: 
                   1000:   \ allocate target for each region
                   1001:   region-link
                   1002:   BEGIN @ dup
                   1003:   WHILE dup
                   1004:         0 >rlink - >r
                   1005:         r@ >rlen @
                   1006:         IF      \ allocate mem
                   1007:                 r@ >rlen @ dup
                   1008: 
                   1009:                 allocatetarget dup image !
                   1010:                 r@ >rmem !
                   1011: 
                   1012:                 target>bitmask-size allocatetarget
1.72      jwilke   1013:                 dup bit$ !
1.67      jwilke   1014:                 r> >rbm !
                   1015: 
                   1016:         ELSE    r> drop THEN
1.72      jwilke   1017:    REPEAT drop ;
                   1018: 
                   1019: \ MakeKernal                                                           22feb99jaw
                   1020: 
                   1021: : makekernel ( targetsize -- targetsize )
                   1022:   dup dictionary >rlen ! setup-target ;
                   1023: 
                   1024: >MINIMAL
                   1025: : makekernel makekernel ;
                   1026: >CROSS
1.52      jwilke   1027: 
1.54      pazsan   1028: \ \ switched tdp for rom support                               03jun97jaw
1.52      jwilke   1029: 
                   1030: \ second value is here to store some maximal value for statistics
                   1031: \ tempdp is also embedded here but has nothing to do with rom support
                   1032: \ (needs switched dp)
                   1033: 
                   1034: variable tempdp        0 ,     \ temporary dp for resolving
                   1035: variable tempdp-save
                   1036: 
                   1037: 0 [IF]
                   1038: variable romdp 0 ,      \ Dictionary-Pointer for ramarea
                   1039: variable ramdp 0 ,      \ Dictionary-Pointer for romarea
                   1040: 
                   1041: \
                   1042: variable sramdp                \ start of ram-area for forth
                   1043: variable sromdp                \ start of rom-area for forth
                   1044: 
                   1045: [THEN]
                   1046: 
                   1047: 
                   1048: 0 value tdp
                   1049: variable fixed         \ flag: true: no automatic switching
                   1050:                        \       false: switching is done automatically
                   1051: 
                   1052: \ Switch-Policy:
                   1053: \
                   1054: \ a header is always compiled into rom
                   1055: \ after a created word (create and variable) compilation goes to ram
                   1056: \
                   1057: \ Be careful: If you want to make the data behind create into rom
                   1058: \ you have to put >rom before create!
                   1059: 
                   1060: variable constflag constflag off
                   1061: 
1.67      jwilke   1062: : activate ( region -- )
                   1063: \G next code goes to this region
                   1064:   >rdp to tdp ;
                   1065: 
1.52      jwilke   1066: : (switchram)
1.53      jwilke   1067:   fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
1.67      jwilke   1068:   ram-dictionary activate ;
1.52      jwilke   1069: 
                   1070: : switchram
                   1071:   constflag @
                   1072:   IF constflag off ELSE (switchram) THEN ;
                   1073: 
                   1074: : switchrom
1.67      jwilke   1075:   fixed @ ?EXIT rom-dictionary activate ;
1.52      jwilke   1076: 
                   1077: : >tempdp ( addr -- ) 
                   1078:   tdp tempdp-save ! tempdp to tdp tdp ! ;
                   1079: : tempdp> ( -- )
                   1080:   tempdp-save @ to tdp ;
                   1081: 
                   1082: : >ram  fixed off (switchram) fixed on ;
                   1083: : >rom  fixed off switchrom fixed on ;
                   1084: : >auto fixed off switchrom ;
                   1085: 
                   1086: 
                   1087: 
                   1088: \ : romstart dup sromdp ! romdp ! ;
                   1089: \ : ramstart dup sramdp ! ramdp ! ;
                   1090: 
1.67      jwilke   1091: \ default compilation goes to rom
1.52      jwilke   1092: \ when romable support is off, only the rom switch is used (!!)
                   1093: >auto
                   1094: 
1.48      anton    1095: : there  tdp @ ;
                   1096: 
1.52      jwilke   1097: >TARGET
1.48      anton    1098: 
1.52      jwilke   1099: \ \ Target Memory Handling
1.1       anton    1100: 
                   1101: \ Byte ordering and cell size                          06oct92py
                   1102: 
1.19      pazsan   1103: : cell+         tcell + ;
                   1104: : cells         tcell<< lshift ;
1.71      jwilke   1105: : chars         tchar * ;
                   1106: : char+                tchar + ;
1.19      pazsan   1107: : floats       tfloat * ;
1.6       anton    1108:     
1.1       anton    1109: >CROSS
1.19      pazsan   1110: : cell/         tcell<< rshift ;
1.1       anton    1111: >TARGET
                   1112: 20 CONSTANT bl
1.52      jwilke   1113: \ TNIL Constant NIL
1.1       anton    1114: 
                   1115: >CROSS
                   1116: 
1.20      pazsan   1117: bigendian
                   1118: [IF]
1.52      jwilke   1119:    : S!  ( n addr -- )  >r s>d r> tcell bounds swap 1-
1.20      pazsan   1120:      DO  maxbyte ud/mod rot I c!  -1 +LOOP  2drop ;
1.52      jwilke   1121:    : S@  ( addr -- n )  >r 0 0 r> tcell bounds
1.20      pazsan   1122:      DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  LOOP d>s ;
1.57      pazsan   1123:    : Sc!  ( n addr -- )  >r s>d r> tchar bounds swap 1-
                   1124:      DO  maxbyte ud/mod rot I c!  -1 +LOOP  2drop ;
                   1125:    : Sc@  ( addr -- n )  >r 0 0 r> tchar bounds
                   1126:      DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  LOOP d>s ;
1.19      pazsan   1127: [ELSE]
1.52      jwilke   1128:    : S!  ( n addr -- )  >r s>d r> tcell bounds
1.20      pazsan   1129:      DO  maxbyte ud/mod rot I c!  LOOP  2drop ;
1.52      jwilke   1130:    : S@  ( addr -- n )  >r 0 0 r> tcell bounds swap 1-
1.20      pazsan   1131:      DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  -1 +LOOP d>s ;
1.57      pazsan   1132:    : Sc!  ( n addr -- )  >r s>d r> tchar bounds
                   1133:      DO  maxbyte ud/mod rot I c!  LOOP  2drop ;
                   1134:    : Sc@  ( addr -- n )  >r 0 0 r> tchar bounds swap 1-
                   1135:      DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  -1 +LOOP d>s ;
1.1       anton    1136: [THEN]
                   1137: 
1.67      jwilke   1138: : taddr>region ( taddr -- region | 0 )
                   1139: \G finds for a target-address the correct region
                   1140: \G returns 0 if taddr is not in range of a target memory region
                   1141:   region-link
                   1142:   BEGIN @ dup
                   1143:   WHILE dup >r
                   1144:         0 >rlink - >r
                   1145:         r@ >rlen @
                   1146:         IF      dup r@ borders within
                   1147:                 IF r> r> drop nip EXIT THEN
                   1148:         THEN
                   1149:         r> drop
                   1150:         r>
                   1151:   REPEAT
                   1152:   2drop 0 ;
                   1153: 
                   1154: : (>regionimage) ( taddr -- 'taddr )
                   1155:   dup
                   1156:   \ find region we want to address
                   1157:   taddr>region dup 0= ABORT" Address out of range!"
                   1158:   >r
                   1159:   \ calculate offset in region
                   1160:   r@ >rstart @ -
                   1161:   \ add regions real address in our memory
                   1162:   r> >rmem @ + ;
                   1163: 
1.1       anton    1164: \ Bit string manipulation                               06oct92py
                   1165: \                                                       9may93jaw
                   1166: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
                   1167: : bits ( n -- n ) chars Bittable + c@ ;
                   1168: 
                   1169: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
                   1170: : +bit ( addr n -- )  >bit over c@ or swap c! ;
1.4       pazsan   1171: : -bit ( addr n -- )  >bit invert over c@ and swap c! ;
1.67      jwilke   1172: 
1.84      jwilke   1173: : (relon) ( taddr -- )  
                   1174:   [ [IFDEF] fd-relocation-table ]
                   1175:   s" +" fd-relocation-table write-file throw
                   1176:   dup s>d <# #s #> fd-relocation-table write-line throw
                   1177:   [ [THEN] ]
                   1178:   bit$ @ swap cell/ +bit ;
                   1179: 
                   1180: : (reloff) ( taddr -- ) 
                   1181:   [ [IFDEF] fd-relocation-table ]
                   1182:   s" -" fd-relocation-table write-file throw
                   1183:   dup s>d <# #s #> fd-relocation-table write-line throw
                   1184:   [ [THEN] ]
                   1185:   bit$ @ swap cell/ -bit ;
1.67      jwilke   1186: 
                   1187: : (>image) ( taddr -- absaddr ) image @ + ;
                   1188: 
                   1189: DEFER >image
                   1190: DEFER relon
                   1191: DEFER reloff
                   1192: DEFER correcter
                   1193: 
                   1194: T has? relocate H
                   1195: [IF]
                   1196: ' (relon) IS relon
                   1197: ' (reloff) IS reloff
                   1198: ' (>image) IS >image
                   1199: [ELSE]
                   1200: ' drop IS relon
                   1201: ' drop IS reloff
1.68      jwilke   1202: ' (>regionimage) IS >image
1.67      jwilke   1203: [THEN]
1.1       anton    1204: 
                   1205: \ Target memory access                                 06oct92py
                   1206: 
                   1207: : align+  ( taddr -- rest )
1.48      anton    1208:     tcell tuck 1- and - [ tcell 1- ] Literal and ;
1.22      anton    1209: : cfalign+  ( taddr -- rest )
1.39      pazsan   1210:     \ see kernel.fs:cfaligned
1.43      pazsan   1211:     /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
1.1       anton    1212: 
                   1213: >TARGET
                   1214: : aligned ( taddr -- ta-addr )  dup align+ + ;
                   1215: \ assumes cell alignment granularity (as GNU C)
                   1216: 
1.22      anton    1217: : cfaligned ( taddr1 -- taddr2 )
1.39      pazsan   1218:     \ see kernel.fs
1.22      anton    1219:     dup cfalign+ + ;
                   1220: 
1.52      jwilke   1221: : @  ( taddr -- w )     >image S@ ;
                   1222: : !  ( w taddr -- )     >image S! ;
1.57      pazsan   1223: : c@ ( taddr -- char )  >image Sc@ ;
                   1224: : c! ( char taddr -- )  >image Sc! ;
1.7       anton    1225: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
1.82      pazsan   1226: : 2! ( x1 x2 taddr -- ) T tuck ! cell+ ! H ;
1.1       anton    1227: 
                   1228: \ Target compilation primitives                        06oct92py
                   1229: \ included A!                                          16may93jaw
                   1230: 
                   1231: : here  ( -- there )    there ;
                   1232: : allot ( n -- )        tdp +! ;
1.78      jwilke   1233: : ,     ( w -- )        T here H tcell T allot  ! H ;
                   1234: : c,    ( char -- )     T here H tchar T allot c! H ;
                   1235: : align ( -- )          T here H align+ 0 ?DO  bl T c, H tchar +LOOP ;
1.22      anton    1236: : cfalign ( -- )
1.78      jwilke   1237:     T here H cfalign+ 0 ?DO  bl T c, H tchar +LOOP ;
1.1       anton    1238: 
1.71      jwilke   1239: : >address             dup 0>= IF tbyte / THEN ; \ ?? jaw 
1.59      pazsan   1240: : A!                    swap >address swap dup relon T ! H ;
                   1241: : A,    ( w -- )        >address T here H relon T , H ;
1.1       anton    1242: 
                   1243: >CROSS
                   1244: 
1.52      jwilke   1245: : tcmove ( source dest len -- )
                   1246: \G cmove in target memory
1.57      pazsan   1247:   tchar * bounds
1.52      jwilke   1248:   ?DO  dup T c@ H I T c! H 1+
1.57      pazsan   1249:   tchar +LOOP  drop ;
1.1       anton    1250: 
1.67      jwilke   1251: \ \ Load Assembler
                   1252: 
1.1       anton    1253: >TARGET
1.74      jwilke   1254: H also Forth definitions
1.1       anton    1255: 
1.77      jwilke   1256: : X    bl word count [ ' target >wordlist ] Literal search-wordlist
1.52      jwilke   1257:        IF      state @ IF compile,
                   1258:                ELSE execute THEN
1.77      jwilke   1259:        ELSE    -1 ABORT" Cross: access method not supported!"
                   1260:        THEN ; immediate
1.1       anton    1261: 
1.52      jwilke   1262: [IFDEF] asm-include asm-include [THEN] hex
1.1       anton    1263: 
1.52      jwilke   1264: previous
                   1265: >CROSS H
1.1       anton    1266: 
1.52      jwilke   1267: \ \ --------------------        Compiler Plug Ins               01aug97jaw
1.1       anton    1268: 
1.54      pazsan   1269: \  Compiler States
                   1270: 
                   1271: Variable comp-state
                   1272: 0 Constant interpreting
                   1273: 1 Constant compiling
                   1274: 2 Constant resolving
                   1275: 3 Constant assembling
                   1276: 
1.52      jwilke   1277: Defer lit, ( n -- )
                   1278: Defer alit, ( n -- )
1.54      pazsan   1279: 
                   1280: Defer branch, ( target-addr -- )       \ compiles a branch
                   1281: Defer ?branch, ( target-addr -- )      \ compiles a ?branch
                   1282: Defer branchmark, ( -- branch-addr )   \ reserves room for a branch
                   1283: Defer ?branchmark, ( -- branch-addr )  \ reserves room for a ?branch
                   1284: Defer ?domark, ( -- branch-addr )      \ reserves room for a ?do branch
                   1285: Defer branchto, ( -- )                 \ actual program position is target of a branch (do e.g. alignment)
                   1286: Defer branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark
                   1287: Defer branchfrom, ( -- )               \ ?!
                   1288: Defer branchtomark, ( -- target-addr ) \ marks a branch destination
                   1289: 
1.52      jwilke   1290: Defer colon, ( tcfa -- )               \ compiles call to tcfa at current position
1.54      pazsan   1291: Defer colonmark, ( -- addr )           \ marks a colon call
1.52      jwilke   1292: Defer colon-resolve ( tcfa addr -- )
1.54      pazsan   1293: 
1.52      jwilke   1294: Defer addr-resolve ( target-addr addr -- )
1.54      pazsan   1295: Defer doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )
                   1296: 
                   1297: Defer do,      ( -- do-token )
                   1298: Defer ?do,     ( -- ?do-token )
                   1299: Defer for,     ( -- for-token )
                   1300: Defer loop,    ( do-token / ?do-token -- )
                   1301: Defer +loop,   ( do-token / ?do-token -- )
                   1302: Defer next,    ( for-token )
1.1       anton    1303: 
1.52      jwilke   1304: [IFUNDEF] ca>native
                   1305: defer ca>native        
                   1306: [THEN]
1.1       anton    1307: 
1.52      jwilke   1308: >TARGET
                   1309: DEFER >body             \ we need the system >body
                   1310:                        \ and the target >body
                   1311: >CROSS
                   1312: T 2 cells H VALUE xt>body
1.54      pazsan   1313: DEFER doprim,  \ compiles start of a primitive
                   1314: DEFER docol,           \ compiles start of a colon definition
1.52      jwilke   1315: DEFER doer,            
                   1316: DEFER fini,      \ compiles end of definition ;s
                   1317: DEFER doeshandler,
                   1318: DEFER dodoes,
                   1319: 
                   1320: DEFER ]comp     \ starts compilation
                   1321: DEFER comp[     \ ends compilation
                   1322: 
1.54      pazsan   1323: : (cc) T a, H ;                                        ' (cc) IS colon,
                   1324: 
                   1325: : (cr) >tempdp ]comp colon, comp[ tempdp> ;    ' (cr) IS colon-resolve
                   1326: : (ar) T ! H ;                                 ' (ar) IS addr-resolve
                   1327: : (dr)  ( ghost res-pnt target-addr addr )
                   1328:        >tempdp drop over 
                   1329:        dup >magic @ <do:> =
                   1330:        IF      doer,
                   1331:        ELSE    dodoes,
                   1332:        THEN 
                   1333:        tempdp> ;                               ' (dr) IS doer-resolve
                   1334: 
                   1335: : (cm) ( -- addr )
                   1336:     T here align H
                   1337:     -1 colon, ;                                        ' (cm) IS colonmark,
1.1       anton    1338: 
1.52      jwilke   1339: >TARGET
                   1340: : compile, colon, ;
                   1341: >CROSS
1.1       anton    1342: 
1.52      jwilke   1343: \ resolve structure
1.1       anton    1344: 
1.52      jwilke   1345: : >next ;              \ link to next field
1.54      pazsan   1346: : >tag cell+ ;         \ indecates type of reference: 0: call, 1: address, 2: doer
1.53      jwilke   1347: : >taddr cell+ cell+ ; 
1.52      jwilke   1348: : >ghost 3 cells + ;
1.53      jwilke   1349: : >file 4 cells + ;
                   1350: : >line 5 cells + ;
1.48      anton    1351: 
1.54      pazsan   1352: : (refered) ( ghost addr tag -- )
                   1353: \G creates a reference to ghost at address taddr
                   1354:     rot >r here r@ >link @ , r> >link ! 
                   1355:     ( taddr tag ) ,
                   1356:     ( taddr ) , 
                   1357:     last-header-ghost @ , 
                   1358:     loadfile , 
                   1359:     sourceline# , 
                   1360:   ;
                   1361: 
1.52      jwilke   1362: : refered ( ghost tag -- )
1.53      jwilke   1363: \G creates a resolve structure
1.54      pazsan   1364:     T here aligned H swap (refered)
                   1365:   ;
                   1366: 
                   1367: : killref ( addr ghost -- )
                   1368: \G kills a forward reference to ghost at position addr
                   1369: \G this is used to eleminate a :dovar refence after making a DOES>
                   1370:     dup >magic @ <fwd> <> IF 2drop EXIT THEN
                   1371:     swap >r >link
                   1372:     BEGIN dup @ dup  ( addr last this )
                   1373:     WHILE dup >taddr @ r@ =
                   1374:         IF   @ over !
                   1375:         ELSE nip THEN
                   1376:     REPEAT rdrop 2drop 
1.53      jwilke   1377:   ;
1.48      anton    1378: 
1.52      jwilke   1379: Defer resolve-warning
1.1       anton    1380: 
1.52      jwilke   1381: : reswarn-test ( ghost res-struct -- ghost res-struct )
1.78      jwilke   1382:   over cr ." Resolving " .ghost dup ."  in " >ghost @ .ghost ;
1.1       anton    1383: 
1.52      jwilke   1384: : reswarn-forward ( ghost res-struct -- ghost res-struct )
1.78      jwilke   1385:   over warnhead .ghost dup ."  is referenced in " 
                   1386:   >ghost @ .ghost ;
1.1       anton    1387: 
1.52      jwilke   1388: \ ' reswarn-test IS resolve-warning
                   1389:  
1.1       anton    1390: \ resolve                                              14oct92py
                   1391: 
1.54      pazsan   1392:  : resolve-loop ( ghost resolve-list tcfa -- )
                   1393:     >r
                   1394:     BEGIN dup WHILE 
                   1395: \        dup >tag @ 2 = IF reswarn-forward THEN
                   1396:          resolve-warning 
                   1397:          r@ over >taddr @ 
                   1398:          2 pick >tag @
                   1399:          CASE  0 OF colon-resolve ENDOF
                   1400:                1 OF addr-resolve ENDOF
                   1401:                2 OF doer-resolve ENDOF
                   1402:          ENDCASE
                   1403:          @ \ next list element
                   1404:     REPEAT 2drop rdrop 
                   1405:   ;
1.52      jwilke   1406: 
                   1407: \ : resolve-loop ( ghost tcfa -- ghost tcfa )
                   1408: \  >r dup >link @
                   1409: \  BEGIN  dup  WHILE  dup T @ H r@ rot T ! H REPEAT  drop r> ;
1.1       anton    1410: 
                   1411: \ exists                                                9may93jaw
                   1412: 
1.52      jwilke   1413: Variable TWarnings
                   1414: TWarnings on
                   1415: Variable Exists-Warnings
                   1416: Exists-Warnings on
                   1417: 
1.1       anton    1418: : exists ( ghost tcfa -- )
                   1419:   over GhostNames
                   1420:   BEGIN @ dup
                   1421:   WHILE 2dup cell+ @ =
                   1422:   UNTIL
1.52      jwilke   1423:         2 cells + count
                   1424:         TWarnings @ Exists-Warnings @ and
                   1425:         IF warnhead type ."  exists"
                   1426:         ELSE 2drop THEN
                   1427:         drop swap >link !
1.24      pazsan   1428:   ELSE  true abort" CROSS: Ghostnames inconsistent "
1.1       anton    1429:   THEN ;
                   1430: 
                   1431: : resolve  ( ghost tcfa -- )
1.54      pazsan   1432: \G resolve referencies to ghost with tcfa
                   1433:     \ is ghost resolved?, second resolve means another definition with the
                   1434:     \ same name
1.75      jwilke   1435:     over undefined? 0= IF  exists EXIT THEN
1.54      pazsan   1436:     \ get linked-list
                   1437:     swap >r r@ >link @ swap \ ( list tcfa R: ghost )
                   1438:     \ mark ghost as resolved
                   1439:     dup r@ >link ! <res> r@ >magic !
                   1440:     \ loop through forward referencies
                   1441:     r> -rot 
                   1442:     comp-state @ >r Resolving comp-state !
                   1443:     resolve-loop 
                   1444:     r> comp-state !
                   1445: 
                   1446:     ['] noop IS resolve-warning 
1.52      jwilke   1447:   ;
1.1       anton    1448: 
                   1449: \ gexecute ghost,                                      01nov92py
                   1450: 
1.52      jwilke   1451: : is-forward   ( ghost -- )
1.54      pazsan   1452:   colonmark, 0 (refered) ; \ compile space for call
1.52      jwilke   1453: 
                   1454: : is-resolved   ( ghost -- )
                   1455:   >link @ colon, ; \ compile-call
                   1456: 
                   1457: : gexecute   ( ghost -- )
                   1458:   dup @ <fwd> = IF  is-forward  ELSE  is-resolved  THEN ;
                   1459: 
                   1460: : addr,  ( ghost -- )
                   1461:   dup @ <fwd> = IF  1 refered 0 T a, H ELSE >link @ T a, H THEN ;
                   1462: 
                   1463: \ !! : ghost,     ghost  gexecute ;
1.1       anton    1464: 
                   1465: \ .unresolved                                          11may93jaw
                   1466: 
                   1467: variable ResolveFlag
                   1468: 
                   1469: \ ?touched                                             11may93jaw
                   1470: 
1.52      jwilke   1471: : ?touched ( ghost -- flag ) dup forward? swap >link @
1.1       anton    1472:                                0 <> and ;
                   1473: 
1.53      jwilke   1474: : .forwarddefs ( ghost -- )
                   1475:        ."  appeared in:"
                   1476:        >link
                   1477:        BEGIN   @ dup
                   1478:        WHILE   cr 5 spaces
1.78      jwilke   1479:                dup >ghost @ .ghost
1.53      jwilke   1480:                ."  file " dup >file @ ?dup IF count type ELSE ." CON" THEN
                   1481:                ."  line " dup >line @ .dec
                   1482:        REPEAT 
                   1483:        drop ;
                   1484: 
1.1       anton    1485: : ?resolved  ( ghostname -- )
                   1486:   dup cell+ @ ?touched
1.53      jwilke   1487:   IF   dup 
                   1488:        cell+ cell+ count cr type ResolveFlag on 
                   1489:        cell+ @ .forwarddefs
                   1490:   ELSE         drop 
                   1491:   THEN ;
1.1       anton    1492: 
                   1493: : .unresolved  ( -- )
                   1494:   ResolveFlag off cr ." Unresolved: "
                   1495:   Ghostnames
                   1496:   BEGIN @ dup
                   1497:   WHILE dup ?resolved
1.10      anton    1498:   REPEAT drop ResolveFlag @
                   1499:   IF
1.48      anton    1500:       -1 abort" Unresolved words!"
1.10      anton    1501:   ELSE
                   1502:       ." Nothing!"
                   1503:   THEN
                   1504:   cr ;
1.1       anton    1505: 
1.52      jwilke   1506: : .stats
                   1507:   base @ >r decimal
                   1508:   cr ." named Headers: " headers-named @ . 
                   1509:   r> base ! ;
                   1510: 
1.79      jwilke   1511: >MINIMAL
                   1512: 
                   1513: : .unresolved .unresolved ;
                   1514: 
1.1       anton    1515: >CROSS
                   1516: \ Header states                                        12dec92py
                   1517: 
                   1518: : flag! ( 8b -- )   tlast @ dup >r T c@ xor r> c! H ;
                   1519: 
                   1520: VARIABLE ^imm
                   1521: 
                   1522: >TARGET
1.36      anton    1523: : immediate     40 flag!
1.18      pazsan   1524:                 ^imm @ @ dup <imm> = IF  drop  EXIT  THEN
1.1       anton    1525:                 <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
                   1526:                 <imm> ^imm @ ! ;
1.36      anton    1527: : restrict      20 flag! ;
1.52      jwilke   1528: 
1.54      pazsan   1529: : isdoer       
                   1530: \G define a forth word as doer, this makes obviously only sence on
                   1531: \G forth processors such as the PSC1000
                   1532:                <do:> last-header-ghost @ >magic ! ;
1.1       anton    1533: >CROSS
                   1534: 
                   1535: \ Target Header Creation                               01nov92py
                   1536: 
1.52      jwilke   1537: >TARGET
1.1       anton    1538: : string,  ( addr count -- )
1.28      pazsan   1539:   dup T c, H bounds  ?DO  I c@ T c, H  LOOP ; 
1.52      jwilke   1540: : name,  ( "name" -- )  bl word count T string, cfalign H ;
1.1       anton    1541: : view,   ( -- ) ( dummy ) ;
1.52      jwilke   1542: >CROSS
1.1       anton    1543: 
1.25      pazsan   1544: \ Target Document Creation (goes to crossdoc.fd)       05jul95py
                   1545: 
1.55      pazsan   1546: s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id
1.25      pazsan   1547: \ contains the file-id of the documentation file
                   1548: 
1.40      pazsan   1549: : T-\G ( -- )
1.25      pazsan   1550:     source >in @ /string doc-file-id write-line throw
1.40      pazsan   1551:     postpone \ ;
1.25      pazsan   1552: 
1.39      pazsan   1553: Variable to-doc  to-doc on
1.25      pazsan   1554: 
                   1555: : cross-doc-entry  ( -- )
                   1556:     to-doc @ tlast @ 0<> and   \ not an anonymous (i.e. noname) header
                   1557:     IF
                   1558:        s" " doc-file-id write-line throw
                   1559:        s" make-doc " doc-file-id write-file throw
1.77      jwilke   1560: 
                   1561:        tlast @ >image count 1F and doc-file-id write-file throw
1.25      pazsan   1562:        >in @
                   1563:        [char] ( parse 2drop
                   1564:        [char] ) parse doc-file-id write-file throw
                   1565:        s"  )" doc-file-id write-file throw
                   1566:        [char] \ parse 2drop                                    
1.40      pazsan   1567:        T-\G
1.25      pazsan   1568:        >in !
1.39      pazsan   1569:     THEN ;
1.25      pazsan   1570: 
1.28      pazsan   1571: \ Target TAGS creation
                   1572: 
1.39      pazsan   1573: s" kernel.TAGS" r/w create-file throw value tag-file-id
1.28      pazsan   1574: \ contains the file-id of the tags file
                   1575: 
                   1576: Create tag-beg 2 c,  7F c, bl c,
                   1577: Create tag-end 2 c,  bl c, 01 c,
                   1578: Create tag-bof 1 c,  0C c,
                   1579: 
                   1580: 2variable last-loadfilename 0 0 last-loadfilename 2!
                   1581:            
                   1582: : put-load-file-name ( -- )
1.77      jwilke   1583:     sourcefilename last-loadfilename 2@ d<>
1.28      pazsan   1584:     IF
                   1585:        tag-bof count tag-file-id write-line throw
1.31      anton    1586:        sourcefilename 2dup
1.28      pazsan   1587:        tag-file-id write-file throw
                   1588:        last-loadfilename 2!
                   1589:        s" ,0" tag-file-id write-line throw
                   1590:     THEN ;
                   1591: 
                   1592: : cross-tag-entry  ( -- )
                   1593:     tlast @ 0<>        \ not an anonymous (i.e. noname) header
                   1594:     IF
                   1595:        put-load-file-name
                   1596:        source >in @ min tag-file-id write-file throw
                   1597:        tag-beg count tag-file-id write-file throw
1.77      jwilke   1598:        tlast @ >image count 1F and tag-file-id write-file throw
1.28      pazsan   1599:        tag-end count tag-file-id write-file throw
1.31      anton    1600:        base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
1.28      pazsan   1601: \      >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
                   1602:        s" ,0" tag-file-id write-line throw
                   1603:        base !
                   1604:     THEN ;
                   1605: 
1.43      pazsan   1606: \ Check for words
                   1607: 
                   1608: Defer skip? ' false IS skip?
                   1609: 
1.75      jwilke   1610: : skipdef ( <name> -- )
1.79      jwilke   1611: \G skip definition of an undefined word in undef-words and
                   1612: \G all-words mode
1.75      jwilke   1613:     ghost dup forward?
                   1614:     IF  >magic <skip> swap !
                   1615:     ELSE drop THEN ;
                   1616: 
1.77      jwilke   1617: : tdefined? ( -- flag ) \ name
1.75      jwilke   1618:     ghost undefined? 0= ;
                   1619: 
                   1620: : defined2? ( -- flag ) \ name
                   1621: \G return true for anything else than forward, even for <skip>
                   1622: \G that's what we want
1.52      jwilke   1623:     ghost forward? 0= ;
1.43      pazsan   1624: 
1.79      jwilke   1625: : forced? ( -- flag ) \ name
                   1626: \G return ture if it is a foreced skip with defskip
                   1627:     ghost >magic @ <skip> = ;
                   1628: 
1.43      pazsan   1629: : needed? ( -- flag ) \ name
1.48      anton    1630: \G returns a false flag when
                   1631: \G a word is not defined
                   1632: \G a forward reference exists
                   1633: \G so the definition is not skipped!
                   1634:     bl word gfind
1.75      jwilke   1635:     IF dup undefined?
1.48      anton    1636:        nip
                   1637:        0=
                   1638:     ELSE  drop true  THEN ;
1.43      pazsan   1639: 
1.44      pazsan   1640: : doer? ( -- flag ) \ name
                   1641:     ghost >magic @ <do:> = ;
                   1642: 
1.43      pazsan   1643: : skip-defs ( -- )
                   1644:     BEGIN  refill  WHILE  source -trailing nip 0= UNTIL  THEN ;
                   1645: 
1.28      pazsan   1646: \ Target header creation
                   1647: 
1.54      pazsan   1648: Variable NoHeaderFlag
                   1649: NoHeaderFlag off
1.1       anton    1650: 
1.54      pazsan   1651: : 0.r ( n1 n2 -- ) 
                   1652:     base @ >r hex 
                   1653:     0 swap <# 0 ?DO # LOOP #> type 
                   1654:     r> base ! ;
1.84      jwilke   1655: 
                   1656: : .sym ( adr len -- )
                   1657: \G escapes / and \ to produce sed output
1.52      jwilke   1658:   bounds 
                   1659:   DO I c@ dup
1.77      jwilke   1660:        CASE    [char] / OF drop ." \/" ENDOF
                   1661:                [char] \ OF drop ." \\" ENDOF
1.52      jwilke   1662:                dup OF emit ENDOF
                   1663:        ENDCASE
1.54      pazsan   1664:     LOOP ;
1.52      jwilke   1665: 
1.43      pazsan   1666: : (Theader ( "name" -- ghost )
1.54      pazsan   1667:     \  >in @ bl word count type 2 spaces >in !
                   1668:     \ wordheaders will always be compiled to rom
                   1669:     switchrom
                   1670:     \ build header in target
                   1671:     NoHeaderFlag @
                   1672:     IF  NoHeaderFlag off
                   1673:     ELSE
                   1674:        T align H view,
1.78      jwilke   1675:        tlast @ dup 0> IF tcell - THEN T A, H  there tlast !
1.54      pazsan   1676:        1 headers-named +!      \ Statistic
                   1677:        >in @ T name, H >in !
                   1678:     THEN
                   1679:     T cfalign here H tlastcfa !
1.84      jwilke   1680:     \ Old Symbol table sed-script
1.54      pazsan   1681: \    >in @ cr ." sym:s/CFA=" there 4 0.r ." /"  bl word count .sym ." /g" cr >in !
1.78      jwilke   1682:     ghost
1.84      jwilke   1683:     \ output symbol table to extra file
                   1684:     [ [IFDEF] fd-symbol-table ]
                   1685:       base @ hex there s>d <# 8 0 DO # LOOP #> fd-symbol-table write-file throw base !
                   1686:       s" :" fd-symbol-table write-file throw
                   1687:       dup >ghostname fd-symbol-table write-line throw
                   1688:     [ [THEN] ]
1.54      pazsan   1689:     dup Last-Header-Ghost !
                   1690:     dup >magic ^imm !     \ a pointer for immediate
                   1691:     Already @
                   1692:     IF  dup >end tdoes !
                   1693:     ELSE 0 tdoes !
                   1694:     THEN
                   1695:     80 flag!
                   1696:     cross-doc-entry cross-tag-entry ;
1.1       anton    1697: 
                   1698: VARIABLE ;Resolve 1 cells allot
1.52      jwilke   1699: \ this is the resolver information from ":"
                   1700: \ resolving is done by ";"
1.1       anton    1701: 
1.11      pazsan   1702: : Theader  ( "name" -- ghost )
                   1703:   (THeader dup there resolve 0 ;Resolve ! ;
1.1       anton    1704: 
                   1705: >TARGET
                   1706: : Alias    ( cfa -- ) \ name
1.43      pazsan   1707:     >in @ skip? IF  2drop  EXIT  THEN  >in !
1.53      jwilke   1708:     dup 0< s" prims" T $has? H 0= and
1.43      pazsan   1709:     IF
1.53      jwilke   1710:        .sourcepos ." needs prim: " >in @ bl word count type >in ! cr
1.43      pazsan   1711:     THEN
                   1712:     (THeader over resolve T A, H 80 flag! ;
1.42      pazsan   1713: : Alias:   ( cfa -- ) \ name
1.43      pazsan   1714:     >in @ skip? IF  2drop  EXIT  THEN  >in !
1.53      jwilke   1715:     dup 0< s" prims" T $has? H 0= and
1.43      pazsan   1716:     IF
1.53      jwilke   1717:        .sourcepos ." needs doer: " >in @ bl word count type >in ! cr
1.43      pazsan   1718:     THEN
                   1719:     ghost tuck swap resolve <do:> swap >magic ! ;
1.64      pazsan   1720: 
                   1721: Variable prim#
                   1722: : first-primitive ( n -- )  prim# ! ;
                   1723: : Primitive  ( -- ) \ name
                   1724:     prim# @ T Alias H  -1 prim# +! ;
1.1       anton    1725: >CROSS
                   1726: 
                   1727: \ Conditionals and Comments                            11may93jaw
                   1728: 
                   1729: : ;Cond
                   1730:   postpone ;
                   1731:   swap ! ;  immediate
                   1732: 
                   1733: : Cond: ( -- ) \ name {code } ;
                   1734:   atonce on
                   1735:   ghost
                   1736:   >exec
                   1737:   :NONAME ;
                   1738: 
                   1739: : restrict? ( -- )
                   1740: \ aborts on interprete state - ae
                   1741:   state @ 0= ABORT" CROSS: Restricted" ;
                   1742: 
                   1743: : Comment ( -- )
                   1744:   >in @ atonce on ghost swap >in ! ' swap >exec ! ;
                   1745: 
                   1746: Comment (       Comment \
                   1747: 
                   1748: \ compile                                              10may93jaw
                   1749: 
                   1750: : compile  ( -- ) \ name
                   1751:   restrict?
1.13      pazsan   1752:   bl word gfind dup 0= ABORT" CROSS: Can't compile "
1.1       anton    1753:   0> ( immediate? )
                   1754:   IF    >exec @ compile,
                   1755:   ELSE  postpone literal postpone gexecute  THEN ;
                   1756:                                         immediate
                   1757: 
1.52      jwilke   1758: : [G'] 
                   1759: \G ticks a ghost and returns its address
                   1760:   bl word gfind 0= ABORT" CROSS: Ghost don't exists"
                   1761:   state @
                   1762:   IF   postpone literal
                   1763:   THEN ; immediate
                   1764: 
                   1765: : ghost>cfa
1.75      jwilke   1766:   dup undefined? ABORT" CROSS: forward " >link @ ;
1.52      jwilke   1767:                
                   1768: >TARGET
                   1769: 
                   1770: : '  ( -- cfa ) 
                   1771: \ returns the target-cfa of a ghost
                   1772:   bl word gfind 0= ABORT" CROSS: Ghost don't exists"
                   1773:   ghost>cfa ;
                   1774: 
                   1775: Cond: [']  T ' H alit, ;Cond
                   1776: 
                   1777: >CROSS
                   1778: 
                   1779: : [T']
                   1780: \ returns the target-cfa of a ghost, or compiles it as literal
                   1781:   postpone [G'] state @ IF postpone ghost>cfa ELSE ghost>cfa THEN ; immediate
1.42      pazsan   1782: 
1.52      jwilke   1783: \ \ threading modell                                   13dec92py
                   1784: \ modularized                                          14jun97jaw
                   1785: 
                   1786: : fillcfa   ( usedcells -- )
1.78      jwilke   1787:   T cells H xt>body swap - 0 ?DO 0 X c, tchar +LOOP ;
1.52      jwilke   1788: 
                   1789: : (>body)   ( cfa -- pfa ) xt>body + ;         ' (>body) T IS >body H
                   1790: 
                   1791: : (doer,)   ( ghost -- ) ]comp gexecute comp[ 1 fillcfa ;   ' (doer,) IS doer,
                   1792: 
                   1793: : (docol,)  ( -- ) [G'] :docol doer, ;         ' (docol,) IS docol,
                   1794: 
                   1795: : (doprim,) ( -- )
                   1796:   there xt>body + ca>native T a, H 1 fillcfa ; ' (doprim,) IS doprim,
                   1797: 
                   1798: : (doeshandler,) ( -- ) 
                   1799:   T cfalign H compile :doesjump T 0 , H ;      ' (doeshandler,) IS doeshandler,
                   1800: 
                   1801: : (dodoes,) ( does-action-ghost -- )
                   1802:   ]comp [G'] :dodoes gexecute comp[
                   1803:   addr,
                   1804:   T here H tcell - reloff 2 fillcfa ;          ' (dodoes,) IS dodoes,
                   1805: 
                   1806: : (lit,) ( n -- )   compile lit T  ,  H ;      ' (lit,) IS lit,
                   1807: 
1.67      jwilke   1808: \ if we dont produce relocatable code alit, defaults to lit, jaw
1.84      jwilke   1809: \ this is just for convenience, so we don't have to define alit,
                   1810: \ seperately for embedded systems....
                   1811: T has? relocate H
1.67      jwilke   1812: [IF]
1.66      pazsan   1813: : (alit,) ( n -- )  compile lit T  a, H ;      ' (alit,) IS alit,
1.67      jwilke   1814: [ELSE]
                   1815: : (alit,) ( n -- )  lit, ;                     ' (alit,) IS alit,
                   1816: [THEN]
1.52      jwilke   1817: 
                   1818: : (fini,)         compile ;s ;                ' (fini,) IS fini,
1.42      pazsan   1819: 
1.43      pazsan   1820: [IFUNDEF] (code) 
                   1821: Defer (code)
                   1822: Defer (end-code)
                   1823: [THEN]
                   1824: 
1.1       anton    1825: >TARGET
1.43      pazsan   1826: : Code
1.52      jwilke   1827:   defempty?
1.48      anton    1828:   (THeader there resolve
1.53      jwilke   1829:   [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
1.52      jwilke   1830:   doprim, 
1.48      anton    1831:   [THEN]
                   1832:   depth (code) ;
1.43      pazsan   1833: 
                   1834: : Code:
1.52      jwilke   1835:   defempty?
1.48      anton    1836:     ghost dup there ca>native resolve  <do:> swap >magic !
1.43      pazsan   1837:     depth (code) ;
                   1838: 
                   1839: : end-code
1.52      jwilke   1840:     (end-code)
1.43      pazsan   1841:     depth ?dup IF   1- <> ABORT" CROSS: Stack changed"
                   1842:     ELSE true ABORT" CROSS: Stack empty" THEN
1.52      jwilke   1843:     ;
1.14      anton    1844: 
1.1       anton    1845: >CROSS
1.52      jwilke   1846: 
1.1       anton    1847: \ tLiteral                                             12dec92py
                   1848: 
                   1849: >TARGET
1.40      pazsan   1850: Cond: \G  T-\G ;Cond
                   1851: 
1.1       anton    1852: Cond:  Literal ( n -- )   restrict? lit, ;Cond
                   1853: Cond: ALiteral ( n -- )   restrict? alit, ;Cond
                   1854: 
                   1855: : Char ( "<char>" -- )  bl word char+ c@ ;
                   1856: Cond: [Char]   ( "<char>" -- )  restrict? Char  lit, ;Cond
                   1857: 
1.43      pazsan   1858: \ some special literals                                        27jan97jaw
                   1859: 
1.52      jwilke   1860: \ !! Known Bug: Special Literals and plug-ins work only correct
                   1861: \ on 16 and 32 Bit Targets and 32 Bit Hosts!
                   1862: 
1.43      pazsan   1863: Cond: MAXU
1.52      jwilke   1864:   restrict? 
                   1865:   tcell 1 cells u> 
                   1866:   IF   compile lit tcell 0 ?DO FF T c, H LOOP 
1.77      jwilke   1867:   ELSE ffffffff lit, THEN
1.52      jwilke   1868:   ;Cond
1.43      pazsan   1869: 
                   1870: Cond: MINI
1.52      jwilke   1871:   restrict?
                   1872:   tcell 1 cells u>
                   1873:   IF   compile lit bigendian 
                   1874:        IF      80 T c, H tcell 1 ?DO 0 T c, H LOOP 
                   1875:        ELSE    tcell 1 ?DO 0 T c, H LOOP 80 T c, H
                   1876:        THEN
1.77      jwilke   1877:   ELSE tcell 2 = IF 8000 ELSE 80000000 THEN lit, THEN
1.52      jwilke   1878:   ;Cond
1.43      pazsan   1879:  
                   1880: Cond: MAXI
1.52      jwilke   1881:  restrict?
                   1882:  tcell 1 cells u>
                   1883:  IF    compile lit bigendian 
                   1884:        IF      7F T c, H tcell 1 ?DO FF T c, H LOOP
                   1885:        ELSE    tcell 1 ?DO FF T c, H LOOP 7F T c, H
                   1886:        THEN
1.77      jwilke   1887:  ELSE  tcell 2 = IF 7fff ELSE 7fffffff THEN lit, THEN
1.43      pazsan   1888:  ;Cond
                   1889: 
1.1       anton    1890: >CROSS
                   1891: \ Target compiling loop                                12dec92py
                   1892: \ ">tib trick thrown out                               10may93jaw
                   1893: \ number? defined at the top                           11may93jaw
1.77      jwilke   1894: \ replaced >in by save-input                           
                   1895: 
                   1896: : discard 0 ?DO drop LOOP ;
1.1       anton    1897: 
                   1898: \ compiled word might leave items on stack!
1.77      jwilke   1899: : tcom ( x1 .. xn n name -- )
                   1900: \  dup count type space
                   1901:   gfind  ?dup
                   1902:   IF    >r >r discard r> r>
                   1903:        0> IF   >exec @ execute
                   1904:        ELSE    gexecute  THEN 
                   1905:        EXIT 
                   1906:   THEN
                   1907:   number? dup  
                   1908:   IF   0> IF swap lit,  THEN  lit, discard
                   1909:   ELSE 2drop restore-input throw ghost gexecute THEN  ;
1.1       anton    1910: 
                   1911: >TARGET
                   1912: \ : ; DOES>                                            13dec92py
                   1913: \ ]                                                     9may93py/jaw
                   1914: 
                   1915: : ] state on
1.54      pazsan   1916:     Compiling comp-state !
1.1       anton    1917:     BEGIN
1.77      jwilke   1918:         BEGIN save-input bl word
                   1919:               dup c@ 0= WHILE drop discard refill 0=
1.1       anton    1920:               ABORT" CROSS: End of file while target compiling"
                   1921:         REPEAT
                   1922:         tcom
                   1923:         state @
                   1924:         0=
                   1925:     UNTIL ;
                   1926: 
                   1927: \ by the way: defining a second interpreter (a compiler-)loop
                   1928: \             is not allowed if a system should be ans conform
                   1929: 
                   1930: : : ( -- colon-sys ) \ Name
1.52      jwilke   1931:   defempty?
                   1932:   constflag off \ don't let this flag work over colon defs
                   1933:                \ just to go sure nothing unwanted happens
1.43      pazsan   1934:   >in @ skip? IF  drop skip-defs  EXIT  THEN  >in !
1.1       anton    1935:   (THeader ;Resolve ! there ;Resolve cell+ !
1.52      jwilke   1936:   docol, ]comp depth T ] H ;
1.1       anton    1937: 
1.37      pazsan   1938: : :noname ( -- colon-sys )
1.52      jwilke   1939:   T cfalign H there docol, 0 ;Resolve ! depth T ] H ;
1.37      pazsan   1940: 
1.2       pazsan   1941: Cond: EXIT ( -- )  restrict?  compile ;S  ;Cond
1.6       anton    1942: 
                   1943: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1.2       pazsan   1944: 
1.52      jwilke   1945: >CROSS
                   1946: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
                   1947:          ;Resolve cell+ @ ;
                   1948: 
                   1949: >TARGET
                   1950: 
                   1951: Cond: recurse ( -- ) Last-Ghost @ gexecute ;Cond
                   1952: 
1.1       anton    1953: Cond: ; ( -- ) restrict?
                   1954:                depth ?dup IF   1- <> ABORT" CROSS: Stack changed"
                   1955:                           ELSE true ABORT" CROSS: Stack empty" THEN
1.52      jwilke   1956:                fini,
                   1957:                comp[
                   1958:                state off
1.1       anton    1959:                ;Resolve @
                   1960:                IF ;Resolve @ ;Resolve cell+ @ resolve THEN
1.54      pazsan   1961:                Interpreting comp-state !
1.1       anton    1962:                ;Cond
1.54      pazsan   1963: Cond: [  restrict? state off Interpreting comp-state ! ;Cond
1.1       anton    1964: 
                   1965: >CROSS
1.54      pazsan   1966: 
                   1967: Create GhostDummy ghostheader
                   1968: <res> GhostDummy >magic !
                   1969: 
1.52      jwilke   1970: : !does ( does-action -- )
                   1971: \ !! zusammenziehen und dodoes, machen!
1.54      pazsan   1972:     tlastcfa @ [G'] :dovar killref
                   1973: \    tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
1.52      jwilke   1974: \ !! geht so nicht, da dodoes, ghost will!
1.54      pazsan   1975:     GhostDummy >link ! GhostDummy 
                   1976:     tlastcfa @ >tempdp dodoes, tempdp> ;
1.1       anton    1977: 
                   1978: >TARGET
                   1979: Cond: DOES> restrict?
1.52      jwilke   1980:         compile (does>) doeshandler, 
                   1981:        \ resolve words made by builders
                   1982:        tdoes @ ?dup IF  @ T here H resolve THEN
1.1       anton    1983:         ;Cond
1.52      jwilke   1984: : DOES> switchrom doeshandler, T here H !does depth T ] H ;
1.1       anton    1985: 
                   1986: >CROSS
                   1987: \ Creation                                             01nov92py
                   1988: 
                   1989: \ Builder                                               11may93jaw
                   1990: 
1.52      jwilke   1991: : Builder    ( Create-xt do:-xt "name" -- )
                   1992: \ builds up a builder in current vocabulary
                   1993: \ create-xt is executed when word is interpreted
                   1994: \ do:-xt is executet when the created word from builder is executed
                   1995: \ for do:-xt an additional entry after the normal ghost-enrys is used
                   1996: 
1.78      jwilke   1997:   Make-Ghost           ( Create-xt do:-xt ghost )
                   1998:   rot swap             ( do:-xt Create-xt ghost )
                   1999:   >exec ! , ;
                   2000: \  rot swap >exec dup @ ['] NoExec <>
                   2001: \  IF 2drop ELSE ! THEN , ;
1.1       anton    2002: 
1.52      jwilke   2003: : gdoes,  ( ghost -- )
                   2004: \ makes the codefield for a word that is built
1.75      jwilke   2005:   >end @ dup undefined? 0=
1.52      jwilke   2006:   IF
1.42      pazsan   2007:        dup >magic @ <do:> =
1.54      pazsan   2008:        IF       doer, 
                   2009:        ELSE    dodoes,
                   2010:        THEN
                   2011:        EXIT
1.52      jwilke   2012:   THEN
                   2013: \  compile :dodoes gexecute
                   2014: \  T here H tcell - reloff 
1.54      pazsan   2015:   2 refered 
                   2016:   0 fillcfa
                   2017:   ;
1.1       anton    2018: 
1.52      jwilke   2019: : TCreate ( <name> -- )
                   2020:   executed-ghost @
                   2021:   create-forward-warn
                   2022:   IF ['] reswarn-forward IS resolve-warning THEN
1.11      pazsan   2023:   Theader >r dup gdoes,
1.77      jwilke   2024: \ stores execution semantic in the built word
1.78      jwilke   2025: \ if the word already has a semantic (concerns S", IS, .", DOES>)
                   2026: \ then keep it
                   2027:   >end @ >exec @ r> >exec dup @ ['] NoExec =
                   2028:   IF ! ELSE 2drop THEN ;
1.52      jwilke   2029: 
                   2030: : RTCreate ( <name> -- )
                   2031: \ creates a new word with code-field in ram
                   2032:   executed-ghost @
                   2033:   create-forward-warn
                   2034:   IF ['] reswarn-forward IS resolve-warning THEN
                   2035:   \ make Alias
                   2036:   (THeader there 0 T a, H 80 flag! ( S executed-ghost new-ghost )
                   2037:   \ store  poiter to code-field
                   2038:   switchram T cfalign H
                   2039:   there swap T ! H
                   2040:   there tlastcfa ! 
                   2041:   dup there resolve 0 ;Resolve !
                   2042:   >r dup gdoes,
1.78      jwilke   2043: \ stores execution semantic in the built word
                   2044: \ if the word already has a semantic (concerns S", IS, .", DOES>)
                   2045: \ then keep it
                   2046:   >end @ >exec @ r> >exec dup @ ['] NoExec =
                   2047:   IF ! ELSE 2drop THEN ;
1.1       anton    2048: 
                   2049: : Build:  ( -- [xt] [colon-sys] )
1.52      jwilke   2050:   :noname postpone TCreate ;
                   2051: 
                   2052: : BuildSmart:  ( -- [xt] [colon-sys] )
                   2053:   :noname
1.53      jwilke   2054:   [ T has? rom H [IF] ]
1.52      jwilke   2055:   postpone RTCreate
                   2056:   [ [ELSE] ]
                   2057:   postpone TCreate 
                   2058:   [ [THEN] ] ;
1.1       anton    2059: 
                   2060: : gdoes>  ( ghost -- addr flag )
1.52      jwilke   2061:   executed-ghost @
1.1       anton    2062:   state @ IF  gexecute true EXIT  THEN
1.52      jwilke   2063:   >link @ T >body H false ;
1.1       anton    2064: 
                   2065: \ DO: ;DO                                               11may93jaw
                   2066: \ changed to ?EXIT                                      10may93jaw
                   2067: 
                   2068: : DO:     ( -- addr [xt] [colon-sys] )
                   2069:   here ghostheader
1.11      pazsan   2070:   :noname postpone gdoes> postpone ?EXIT ;
1.1       anton    2071: 
1.42      pazsan   2072: : by:     ( -- addr [xt] [colon-sys] ) \ name
                   2073:   ghost
                   2074:   :noname postpone gdoes> postpone ?EXIT ;
                   2075: 
1.52      jwilke   2076: : ;DO ( addr [xt] [colon-sys] -- addr )
1.1       anton    2077:   postpone ;    ( S addr xt )
                   2078:   over >exec ! ; immediate
                   2079: 
                   2080: : by      ( -- addr ) \ Name
                   2081:   ghost >end @ ;
                   2082: 
                   2083: >TARGET
                   2084: \ Variables and Constants                              05dec92py
                   2085: 
1.52      jwilke   2086: Build:  ( n -- ) ;
                   2087: by: :docon ( ghost -- n ) T @ H ;DO
                   2088: Builder (Constant)
                   2089: 
                   2090: Build:  ( n -- ) T , H ;
                   2091: by (Constant)
                   2092: Builder Constant
                   2093: 
                   2094: Build:  ( n -- ) T A, H ;
                   2095: by (Constant)
                   2096: Builder AConstant
                   2097: 
                   2098: Build:  ( d -- ) T , , H ;
                   2099: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
                   2100: Builder 2Constant
                   2101: 
                   2102: BuildSmart: ;
1.42      pazsan   2103: by: :dovar ( ghost -- addr ) ;DO
1.1       anton    2104: Builder Create
                   2105: 
1.53      jwilke   2106: T has? rom H [IF]
1.54      pazsan   2107: Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1.52      jwilke   2108: by (Constant)
                   2109: Builder Variable
                   2110: [ELSE]
1.1       anton    2111: Build: T 0 , H ;
                   2112: by Create
                   2113: Builder Variable
1.52      jwilke   2114: [THEN]
1.1       anton    2115: 
1.53      jwilke   2116: T has? rom H [IF]
1.54      pazsan   2117: Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , 0 , H ( switchrom ) ;
                   2118: by (Constant)
                   2119: Builder 2Variable
                   2120: [ELSE]
                   2121: Build: T 0 , 0 , H ;
                   2122: by Create
                   2123: Builder 2Variable
                   2124: [THEN]
                   2125: 
                   2126: T has? rom H [IF]
                   2127: Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
1.52      jwilke   2128: by (Constant)
                   2129: Builder AVariable
                   2130: [ELSE]
1.1       anton    2131: Build: T 0 A, H ;
                   2132: by Create
                   2133: Builder AVariable
1.52      jwilke   2134: [THEN]
1.1       anton    2135: 
1.3       pazsan   2136: \ User variables                                       04may94py
                   2137: 
                   2138: >CROSS
1.78      jwilke   2139: 
1.3       pazsan   2140: Variable tup  0 tup !
                   2141: Variable tudp 0 tudp !
1.78      jwilke   2142: 
1.3       pazsan   2143: : u,  ( n -- udp )
                   2144:   tup @ tudp @ + T  ! H
1.19      pazsan   2145:   tudp @ dup T cell+ H tudp ! ;
1.78      jwilke   2146: 
1.3       pazsan   2147: : au, ( n -- udp )
                   2148:   tup @ tudp @ + T A! H
1.19      pazsan   2149:   tudp @ dup T cell+ H tudp ! ;
1.78      jwilke   2150: 
1.3       pazsan   2151: >TARGET
                   2152: 
1.78      jwilke   2153: Build: 0 u, X , ;
                   2154: by: :douser ( ghost -- up-addr )  X @ tup @ + ;DO
1.1       anton    2155: Builder User
                   2156: 
1.78      jwilke   2157: Build: 0 u, X , 0 u, drop ;
1.3       pazsan   2158: by User
1.1       anton    2159: Builder 2User
                   2160: 
1.78      jwilke   2161: Build: 0 au, X , ;
1.3       pazsan   2162: by User
1.1       anton    2163: Builder AUser
                   2164: 
1.52      jwilke   2165: BuildSmart: T , H ;
1.44      pazsan   2166: by (Constant)
1.1       anton    2167: Builder Value
                   2168: 
1.52      jwilke   2169: BuildSmart: T A, H ;
1.44      pazsan   2170: by (Constant)
1.32      pazsan   2171: Builder AValue
                   2172: 
1.52      jwilke   2173: BuildSmart:  ( -- ) [T'] noop T A, H ;
1.42      pazsan   2174: by: :dodefer ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1.1       anton    2175: Builder Defer
1.37      pazsan   2176: 
1.78      jwilke   2177: Build: ( inter comp -- ) swap T immediate A, A, H ;
1.37      pazsan   2178: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1.38      anton    2179: Builder interpret/compile:
1.24      pazsan   2180: 
                   2181: \ Sturctures                                           23feb95py
                   2182: 
                   2183: >CROSS
                   2184: : nalign ( addr1 n -- addr2 )
                   2185: \ addr2 is the aligned version of addr1 wrt the alignment size n
                   2186:  1- tuck +  swap invert and ;
                   2187: >TARGET
                   2188: 
1.44      pazsan   2189: Build: ;
                   2190: by: :dofield T @ H + ;DO
                   2191: Builder (Field)
                   2192: 
1.51      anton    2193: Build: ( align1 offset1 align size "name" --  align2 offset2 )
                   2194:     rot dup T , H ( align1 align size offset1 )
                   2195:     + >r nalign r> ;
1.44      pazsan   2196: by (Field)
1.24      pazsan   2197: Builder Field
                   2198: 
1.51      anton    2199: : struct  T 1 chars 0 H ;
1.24      pazsan   2200: : end-struct  T 2Constant H ;
                   2201: 
1.52      jwilke   2202: : cell% ( n -- size align )
1.51      anton    2203:     T 1 cells H dup ;
1.24      pazsan   2204: 
1.52      jwilke   2205: \ structural conditionals                              17dec92py
                   2206: 
                   2207: >CROSS
                   2208: : ?struc      ( flag -- )       ABORT" CROSS: unstructured " ;
                   2209: : sys?        ( sys -- sys )    dup 0= ?struc ;
                   2210: : >mark       ( -- sys )        T here  ( dup ." M" hex. ) 0 , H ;
                   2211: 
1.78      jwilke   2212: : branchoffset ( src dest -- )  - tchar / ; \ ?? jaw
1.52      jwilke   2213: 
1.78      jwilke   2214: : >resolve    ( sys -- )        
                   2215:        X here ( dup ." >" hex. ) over branchoffset swap X ! ;
1.52      jwilke   2216: 
1.78      jwilke   2217: : <resolve    ( sys -- )
                   2218:        X here ( dup ." <" hex. ) branchoffset X , ;
1.52      jwilke   2219: 
1.78      jwilke   2220: :noname compile branch X here branchoffset X , ;
1.54      pazsan   2221:   IS branch, ( target-addr -- )
1.78      jwilke   2222: :noname compile ?branch X here branchoffset X , ;
1.54      pazsan   2223:   IS ?branch, ( target-addr -- )
                   2224: :noname compile branch T here 0 , H ;
                   2225:   IS branchmark, ( -- branchtoken )
                   2226: :noname compile ?branch T here 0 , H ;
                   2227:   IS ?branchmark, ( -- branchtoken )
                   2228: :noname T here 0 , H ;
                   2229:   IS ?domark, ( -- branchtoken )
1.78      jwilke   2230: :noname dup X @ ?struc X here over branchoffset swap X ! ;
1.54      pazsan   2231:   IS branchtoresolve, ( branchtoken -- )
1.78      jwilke   2232: :noname branchto, X here ;
1.54      pazsan   2233:   IS branchtomark, ( -- target-addr )
1.52      jwilke   2234: 
                   2235: >TARGET
                   2236: 
                   2237: \ Structural Conditionals                              12dec92py
                   2238: 
                   2239: Cond: BUT       restrict? sys? swap ;Cond
                   2240: Cond: YET       restrict? sys? dup ;Cond
                   2241: 
                   2242: >CROSS
                   2243: 
1.78      jwilke   2244: Variable tleavings 0 tleavings !
1.52      jwilke   2245: 
1.54      pazsan   2246: : (done) ( addr -- )
                   2247:     tleavings @
                   2248:     BEGIN  dup
                   2249:     WHILE
                   2250:        >r dup r@ cell+ @ \ address of branch
                   2251:        u> 0=      \ lower than DO?     
                   2252:     WHILE
                   2253:        r@ 2 cells + @ \ branch token
                   2254:        branchtoresolve,
                   2255:        r@ @ r> free throw
                   2256:     REPEAT  r>  THEN
                   2257:     tleavings ! drop ;
                   2258: 
1.53      jwilke   2259: >TARGET
                   2260: 
1.54      pazsan   2261: Cond: DONE   ( addr -- )  restrict? (done) ;Cond
1.53      jwilke   2262: 
                   2263: >CROSS
1.54      pazsan   2264: : (leave) ( branchtoken -- )
1.53      jwilke   2265:     3 cells allocate throw >r
                   2266:     T here H r@ cell+ !
                   2267:     r@ 2 cells + !
                   2268:     tleavings @ r@ !
                   2269:     r> tleavings ! ;
                   2270: >TARGET
                   2271: 
1.54      pazsan   2272: Cond: LEAVE     restrict? branchmark, (leave) ;Cond
                   2273: Cond: ?LEAVE    restrict? compile 0=  ?branchmark, (leave)  ;Cond
1.53      jwilke   2274: 
1.54      pazsan   2275: >CROSS
                   2276: \ !!JW ToDo : Move to general tools section
                   2277: 
                   2278: : to1 ( x1 x2 xn n -- addr )
                   2279: \G packs n stack elements in a allocated memory region
                   2280:    dup dup 1+ cells allocate throw dup >r swap 1+
                   2281:    0 DO tuck ! cell+ LOOP
                   2282:    drop r> ;
                   2283: : 1to ( addr -- x1 x2 xn )
                   2284: \G unpacks the elements saved by to1
                   2285:     dup @ swap over cells + swap
                   2286:     0 DO  dup @ swap 1 cells -  LOOP
                   2287:     free throw ;
                   2288: 
                   2289: : loop]     branchto, dup <resolve tcell - (done) ;
                   2290: 
                   2291: : skiploop] ?dup IF branchto, branchtoresolve, THEN ;
                   2292: 
                   2293: >TARGET
                   2294: 
1.52      jwilke   2295: \ Structural Conditionals                              12dec92py
                   2296: 
1.53      jwilke   2297: >TARGET
1.52      jwilke   2298: Cond: AHEAD     restrict? branchmark, ;Cond
                   2299: Cond: IF        restrict? ?branchmark, ;Cond
                   2300: Cond: THEN      restrict? sys? branchto, branchtoresolve, ;Cond
                   2301: Cond: ELSE      restrict? sys? compile AHEAD swap compile THEN ;Cond
                   2302: 
                   2303: Cond: BEGIN     restrict? branchtomark, ;Cond
                   2304: Cond: WHILE     restrict? sys? compile IF swap ;Cond
                   2305: Cond: AGAIN     restrict? sys? branch, ;Cond
                   2306: Cond: UNTIL     restrict? sys? ?branch, ;Cond
                   2307: Cond: REPEAT    restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
                   2308: 
                   2309: Cond: CASE      restrict? 0 ;Cond
                   2310: Cond: OF        restrict? 1+ >r compile over compile =
                   2311:                 compile IF compile drop r> ;Cond
1.45      pazsan   2312: Cond: ENDOF     restrict? >r compile ELSE r> ;Cond
                   2313: Cond: ENDCASE   restrict? compile drop 0 ?DO  compile THEN  LOOP ;Cond
1.1       anton    2314: 
                   2315: \ Structural Conditionals                              12dec92py
                   2316: 
1.67      jwilke   2317: :noname \ ?? i think 0 is too much! jaw
1.54      pazsan   2318:     0 compile (do)
                   2319:     branchtomark,  2 to1 ;
                   2320:   IS do, ( -- target-addr )
                   2321: 
                   2322: \ :noname
                   2323: \     compile 2dup compile = compile IF
                   2324: \     compile 2drop compile ELSE
                   2325: \     compile (do) branchtomark, 2 to1 ;
                   2326: \   IS ?do,
                   2327:     
                   2328: :noname
                   2329:     0 compile (?do)  ?domark, (leave)
                   2330:     branchtomark,  2 to1 ;
                   2331:   IS ?do, ( -- target-addr )
                   2332: :noname compile (for) branchtomark, ;
                   2333:   IS for, ( -- target-addr )
                   2334: :noname 1to compile (loop)  loop] compile unloop skiploop] ;
                   2335:   IS loop, ( target-addr -- )
                   2336: :noname 1to compile (+loop)  loop] compile unloop skiploop] ;
                   2337:   IS +loop, ( target-addr -- )
                   2338: :noname compile (next)  loop] compile unloop ;
                   2339:   IS next, ( target-addr -- )
                   2340: 
                   2341: Cond: DO       restrict? do, ;Cond
                   2342: Cond: ?DO      restrict? ?do, ;Cond
                   2343: Cond: FOR      restrict? for, ;Cond
                   2344: 
                   2345: Cond: LOOP     restrict? sys? loop, ;Cond
                   2346: Cond: +LOOP    restrict? sys? +loop, ;Cond
                   2347: Cond: NEXT     restrict? sys? next, ;Cond
1.52      jwilke   2348: 
1.1       anton    2349: \ String words                                         23feb93py
                   2350: 
1.52      jwilke   2351: : ,"            [char] " parse T string, align H ;
1.1       anton    2352: 
                   2353: Cond: ."        restrict? compile (.")     T ," H ;Cond
                   2354: Cond: S"        restrict? compile (S")     T ," H ;Cond
                   2355: Cond: ABORT"    restrict? compile (ABORT") T ," H ;Cond
                   2356: 
                   2357: Cond: IS        T ' >body H compile ALiteral compile ! ;Cond
1.66      pazsan   2358: : IS            T >address ' >body ! H ;
1.9       pazsan   2359: Cond: TO        T ' >body H compile ALiteral compile ! ;Cond
                   2360: : TO            T ' >body ! H ;
1.1       anton    2361: 
1.52      jwilke   2362: Cond: defers   T ' >body @ compile, H ;Cond
                   2363: : on           T -1 swap ! H ; 
                   2364: : off          T 0 swap ! H ;
                   2365: 
1.1       anton    2366: \ LINKED ERR" ENV" 2ENV"                                18may93jaw
                   2367: 
                   2368: \ linked list primitive
1.79      jwilke   2369: : linked        X here over X @ X A, swap X ! ;
1.52      jwilke   2370: : chained      T linked A, H ;
1.1       anton    2371: 
                   2372: : err"   s" ErrLink linked" evaluate T , H
1.52      jwilke   2373:          [char] " parse T string, align H ;
1.1       anton    2374: 
                   2375: : env"  [char] " parse s" EnvLink linked" evaluate
1.52      jwilke   2376:         T string, align , H ;
1.1       anton    2377: 
                   2378: : 2env" [char] " parse s" EnvLink linked" evaluate
1.52      jwilke   2379:         here >r T string, align , , H
1.1       anton    2380:         r> dup T c@ H 80 and swap T c! H ;
                   2381: 
                   2382: \ compile must be last                                 22feb93py
                   2383: 
                   2384: Cond: compile ( -- ) restrict? \ name
1.13      pazsan   2385:       bl word gfind dup 0= ABORT" CROSS: Can't compile"
1.1       anton    2386:       0> IF    gexecute
                   2387:          ELSE  dup >magic @ <imm> =
                   2388:                IF   gexecute
1.54      pazsan   2389:                ELSE compile (compile) addr, THEN THEN ;Cond
1.1       anton    2390: 
                   2391: Cond: postpone ( -- ) restrict? \ name
1.13      pazsan   2392:       bl word gfind dup 0= ABORT" CROSS: Can't compile"
1.1       anton    2393:       0> IF    gexecute
                   2394:          ELSE  dup >magic @ <imm> =
                   2395:                IF   gexecute
1.54      pazsan   2396:               ELSE compile (compile) addr, THEN THEN ;Cond
                   2397:           
1.77      jwilke   2398: \ save-cross                                           17mar93py
                   2399: 
                   2400: hex
                   2401: 
                   2402: >CROSS
                   2403: Create magic  s" Gforth2x" here over allot swap move
                   2404: 
                   2405: bigendian 1+ \ strangely, in magic big=0, little=1
                   2406: tcell 1 = 0 and or
                   2407: tcell 2 = 2 and or
                   2408: tcell 4 = 4 and or
                   2409: tcell 8 = 6 and or
                   2410: tchar 1 = 00 and or
                   2411: tchar 2 = 28 and or
                   2412: tchar 4 = 50 and or
                   2413: tchar 8 = 78 and or
                   2414: magic 7 + c!
                   2415: 
                   2416: : save-cross ( "image-name" "binary-name" -- )
                   2417:   bl parse ." Saving to " 2dup type cr
                   2418:   w/o bin create-file throw >r
                   2419:   TNIL IF
1.80      anton    2420:       s" #! "           r@ write-file throw
                   2421:       bl parse          r@ write-file throw
                   2422:       s"  --image-file" r@ write-file throw
1.77      jwilke   2423:       #lf       r@ emit-file throw
                   2424:       r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
                   2425:       ?do
                   2426:          bl over emit-file throw
                   2427:       loop
                   2428:       drop
                   2429:       magic 8       r@ write-file throw \ write magic
                   2430:   ELSE
                   2431:       bl parse 2drop
                   2432:   THEN
                   2433:   image @ there 
                   2434:   r@ write-file throw \ write image
                   2435:   TNIL IF
                   2436:       bit$  @ there 1- tcell>bit rshift 1+
                   2437:                 r@ write-file throw \ write tags
                   2438:   THEN
                   2439:   r> close-file throw ;
                   2440: 
                   2441: : save-region ( addr len -- )
                   2442:   bl parse w/o bin create-file throw >r
                   2443:   swap >image swap r@ write-file throw
                   2444:   r> close-file throw ;
                   2445: 
1.54      pazsan   2446: \ \ minimal definitions
                   2447:           
1.77      jwilke   2448: >MINIMAL also minimal
                   2449: 
1.1       anton    2450: \ Usefull words                                        13feb93py
                   2451: 
                   2452: : KB  400 * ;
                   2453: 
1.54      pazsan   2454: \ \ [IF] [ELSE] [THEN] ...                             14sep97jaw
                   2455: 
                   2456: \ it is useful to define our own structures and not to rely
                   2457: \ on the words in the compiler
                   2458: \ The words in the compiler might be defined with vocabularies
                   2459: \ this doesn't work with our self-made compile-loop
                   2460: 
                   2461: Create parsed 20 chars allot   \ store word we parsed
                   2462: 
                   2463: : upcase
                   2464:     parsed count bounds
                   2465:     ?DO I c@ toupper I c! LOOP ;
                   2466: 
                   2467: : [ELSE]
                   2468:     1 BEGIN
                   2469:        BEGIN bl word count dup WHILE
1.77      jwilke   2470:            comment? 20 umin parsed place upcase parsed count
1.54      pazsan   2471:            2dup s" [IF]" compare 0= >r 
                   2472:            2dup s" [IFUNDEF]" compare 0= >r
                   2473:            2dup s" [IFDEF]" compare 0= r> or r> or
                   2474:            IF   2drop 1+
                   2475:            ELSE 2dup s" [ELSE]" compare 0=
                   2476:                IF   2drop 1- dup
                   2477:                    IF 1+
                   2478:                    THEN
                   2479:                ELSE
                   2480:                    2dup s" [ENDIF]" compare 0= >r
                   2481:                    s" [THEN]" compare 0= r> or
                   2482:                    IF 1- THEN
                   2483:                THEN
                   2484:            THEN
                   2485:            ?dup 0= ?EXIT
                   2486:        REPEAT
                   2487:        2drop refill 0=
                   2488:     UNTIL drop ; immediate
                   2489:   
                   2490: : [THEN] ( -- ) ; immediate
                   2491: 
                   2492: : [ENDIF] ( -- ) ; immediate
                   2493: 
                   2494: : [IF] ( flag -- )
                   2495:     0= IF postpone [ELSE] THEN ; immediate 
                   2496: 
                   2497: Cond: [IF]      postpone [IF] ;Cond
                   2498: Cond: [THEN]    postpone [THEN] ;Cond
                   2499: Cond: [ELSE]    postpone [ELSE] ;Cond
                   2500: 
1.1       anton    2501: \ define new [IFDEF] and [IFUNDEF]                      20may93jaw
                   2502: 
1.77      jwilke   2503: : defined? tdefined? ;
1.44      pazsan   2504: : needed? needed? ;
                   2505: : doer? doer? ;
1.1       anton    2506: 
1.52      jwilke   2507: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
                   2508: 
                   2509: : directive? 
1.77      jwilke   2510:   bl word count [ ' target >wordlist ] literal search-wordlist 
1.52      jwilke   2511:   dup IF nip THEN ;
                   2512: 
                   2513: : [IFDEF]  >in @ directive? swap >in !
1.77      jwilke   2514:           0= IF tdefined? ELSE name 2drop true THEN
1.52      jwilke   2515:           postpone [IF] ;
                   2516: 
1.77      jwilke   2517: : [IFUNDEF] tdefined? 0= postpone [IF] ;
1.1       anton    2518: 
1.54      pazsan   2519: Cond: [IFDEF]   postpone [IFDEF] ;Cond
                   2520: 
                   2521: Cond: [IFUNDEF] postpone [IFUNDEF] ;Cond
                   2522: 
1.1       anton    2523: \ C: \- \+ Conditional Compiling                         09jun93jaw
                   2524: 
1.77      jwilke   2525: : C: >in @ tdefined? 0=
                   2526:      IF    >in ! X :
1.1       anton    2527:      ELSE drop
                   2528:         BEGIN bl word dup c@
                   2529:               IF   count comment? s" ;" compare 0= ?EXIT
                   2530:               ELSE refill 0= ABORT" CROSS: Out of Input while C:"
                   2531:               THEN
                   2532:         AGAIN
                   2533:      THEN ;
                   2534: 
1.74      jwilke   2535: : d? d? ;
                   2536: 
                   2537: \G doesn't skip line when debug switch is on
                   2538: : \D D? 0= IF postpone \ THEN ;
1.52      jwilke   2539: 
1.48      anton    2540: \G interprets the line if word is not defined
1.77      jwilke   2541: : \- tdefined? IF postpone \ THEN ;
1.48      anton    2542: 
                   2543: \G interprets the line if word is defined
1.77      jwilke   2544: : \+ tdefined? 0= IF postpone \ THEN ;
1.1       anton    2545: 
1.48      anton    2546: Cond: \- \- ;Cond
                   2547: Cond: \+ \+ ;Cond
1.52      jwilke   2548: Cond: \D \D ;Cond
1.48      anton    2549: 
                   2550: : ?? bl word find IF execute ELSE drop 0 THEN ;
                   2551: 
                   2552: : needed:
                   2553: \G defines ghost for words that we want to be compiled
                   2554:   BEGIN >in @ bl word c@ WHILE >in ! ghost drop REPEAT drop ;
                   2555: 
1.1       anton    2556: \ words that should be in minimal
1.52      jwilke   2557: 
                   2558: create s-buffer 50 chars allot
                   2559: 
1.77      jwilke   2560: bigendian Constant bigendian
1.1       anton    2561: 
1.52      jwilke   2562: : here there ;
1.67      jwilke   2563: : equ constant ;
                   2564: : mark there constant ;
1.54      pazsan   2565: 
                   2566: \ compiler directives
1.52      jwilke   2567: : >ram >ram ;
                   2568: : >rom >rom ;
                   2569: : >auto >auto ;
                   2570: : >tempdp >tempdp ;
                   2571: : tempdp> tempdp> ;
                   2572: : const constflag on ;
                   2573: : warnings name 3 = 0= twarnings ! drop ;
1.60      anton    2574: : | ;
                   2575: \ : | NoHeaderFlag on ; \ This is broken (damages the last word)
1.52      jwilke   2576: 
1.48      anton    2577: : save-cross save-cross ;
1.52      jwilke   2578: : save-region save-region ;
                   2579: : tdump swap >image swap dump ;
                   2580: 
1.48      anton    2581: also forth 
1.52      jwilke   2582: [IFDEF] Label           : Label defempty? Label ; [THEN] 
                   2583: [IFDEF] start-macros    : start-macros defempty? start-macros ; [THEN]
1.77      jwilke   2584: \ [IFDEF] builttag     : builttag builttag ;   [THEN]
1.48      anton    2585: previous
                   2586: 
1.52      jwilke   2587: : s" [char] " parse s-buffer place s-buffer count ; \ for environment?
1.43      pazsan   2588: : + + ;
1.52      jwilke   2589: : 1+ 1 + ;
                   2590: : 2+ 2 + ;
1.43      pazsan   2591: : 1- 1- ;
                   2592: : - - ;
1.52      jwilke   2593: : and and ;
                   2594: : or or ;
1.43      pazsan   2595: : 2* 2* ;
                   2596: : * * ;
                   2597: : / / ;
                   2598: : dup dup ;
                   2599: : over over ;
                   2600: : swap swap ;
                   2601: : rot rot ;
                   2602: : drop drop ;
                   2603: : =   = ;
                   2604: : 0=   0= ;
                   2605: : lshift lshift ;
                   2606: : 2/ 2/ ;
1.19      pazsan   2607: : . . ;
1.1       anton    2608: 
1.79      jwilke   2609: : all-words    ['] forced?    IS skip? ;
1.43      pazsan   2610: : needed-words ['] needed?  IS skip? ;
1.75      jwilke   2611: : undef-words  ['] defined2? IS skip? ;
                   2612: : skipdef skipdef ;
1.1       anton    2613: 
1.40      pazsan   2614: : \  postpone \ ;  immediate
1.47      pazsan   2615: : \G T-\G ; immediate
1.40      pazsan   2616: : (  postpone ( ;  immediate
1.1       anton    2617: : include bl word count included ;
1.52      jwilke   2618: : require require ;
1.1       anton    2619: : .( [char] ) parse type ;
1.52      jwilke   2620: : ." [char] " parse type ;
1.1       anton    2621: : cr cr ;
                   2622: 
1.77      jwilke   2623: : times 0 ?DO dup X c, LOOP drop ; \ used for space table creation
                   2624: 
                   2625: \ only forth also cross also minimal definitions order
1.1       anton    2626: 
                   2627: \ cross-compiler words
                   2628: 
                   2629: : decimal       decimal ;
                   2630: : hex           hex ;
                   2631: 
1.77      jwilke   2632: \ : tudp          X tudp ;
                   2633: \ : tup           X tup ;
                   2634: 
                   2635: : doc-off       false to-doc ! ;
                   2636: : doc-on        true  to-doc ! ;
1.39      pazsan   2637: 
1.52      jwilke   2638: [IFDEF] dbg : dbg dbg ; [THEN]
1.39      pazsan   2639: 
1.1       anton    2640: \ for debugging...
                   2641: : order         order ;
1.52      jwilke   2642: : hwords         words ;
                   2643: : words        also ghosts words previous ;
1.1       anton    2644: : .s            .s ;
                   2645: : bye           bye ;
                   2646: 
                   2647: \ turnkey direction
                   2648: : H forth ; immediate
                   2649: : T minimal ; immediate
                   2650: : G ghosts ; immediate
                   2651: 
1.77      jwilke   2652: : turnkey 
1.78      jwilke   2653:    \GFORTH 0 set-order also ghosts
                   2654:    \ANSI [ ' ghosts >wordlist ] Literal 1 set-order
                   2655:    also target definitions
1.77      jwilke   2656:    also Minimal also ;
1.1       anton    2657: 
                   2658: \ these ones are pefered:
                   2659: 
                   2660: : lock   turnkey ;
1.74      jwilke   2661: : unlock previous forth also cross ;
1.52      jwilke   2662: 
1.77      jwilke   2663: \ also minimal
1.52      jwilke   2664: : [[ also unlock ;
1.78      jwilke   2665: : ]] previous previous also also ;
1.1       anton    2666: 
                   2667: unlock definitions also minimal
                   2668: : lock   lock ;
                   2669: lock
1.77      jwilke   2670: 
                   2671: \ load cross compiler extension defined in mach file
                   2672: 
                   2673: UNLOCK >CROSS
                   2674: 
                   2675: [IFDEF] extend-cross extend-cross [THEN]
                   2676: 
                   2677: LOCK

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