Annotation of gforth/cross.fs, revision 1.82

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

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