File:  [gforth] / gforth / cross.fs
Revision 1.63: download - view: text, annotated - select for diffs
Tue Dec 22 21:17:14 1998 UTC (20 years, 11 months ago) by anton
Branches: MAIN
CVS tags: HEAD
new solution for make dist
fixed a bug in generating magic

    1: \ CROSS.FS     The Cross-Compiler                      06oct92py
    2: \ Idea and implementation: Bernd Paysan (py)
    3: 
    4: \ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
    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.
   21: 
   22: \ Log:
   23: \       changed in ; [ to state off           12may93jaw
   24: \       included place +place                 12may93jaw
   25: \       for a created word (variable, constant...)
   26: \       is now an alias in the target voabulary.
   27: \       this means it is no longer necessary to
   28: \       switch between vocabularies for variable
   29: \       initialization                        12may93jaw
   30: \       discovered error in DOES>
   31: \       replaced !does with (;code)           16may93jaw
   32: \       made complete redesign and
   33: \       introduced two vocs method
   34: \       to be asure that the right words
   35: \       are found                             08jun93jaw
   36: \       btw:  ! works not with 16 bit
   37: \             targets                         09jun93jaw
   38: \       added: 2user and value                11jun93jaw
   39: 
   40: \ 	needed? works better now!!!		01mar97jaw
   41: \	mach file is only loaded into target
   42: \	cell corrected
   43: \ 	romable extansions			27apr97-5jun97jaw
   44: \	environmental query support		01sep97jaw
   45: \	added own [IF] ... [ELSE] ... [THEN]	14sep97jaw
   46: \	extra resolver for doers		20sep97jaw
   47: \	added killref for DOES>			20sep97jaw
   48: 
   49: 
   50: hex     \ the defualt base for the cross-compiler is hex !!
   51: Warnings off
   52: 
   53: \ words that are generaly useful
   54: 
   55: : KB  400 * ;
   56: : >wordlist ( vocabulary-xt -- wordlist-struct )
   57:   also execute get-order swap >r 1- set-order r> ;
   58: 
   59: : umax 2dup u< IF swap THEN drop ;
   60: : umin 2dup u> IF swap THEN drop ;
   61: 
   62: : string, ( c-addr u -- )
   63:     \ puts down string as cstring
   64:     dup c, here swap chars dup allot move ;
   65: 
   66: : SetValue ( n -- <name> )
   67: \G Same behaviour as "Value" if the <name> is not defined
   68: \G Same behaviour as "to" if <name> is defined
   69: \G SetValue searches in the current vocabulary
   70:  save-input bl word >r restore-input throw r> count
   71:  get-current search-wordlist
   72:  IF ['] to execute ELSE Value THEN ;
   73: 
   74: : DefaultValue ( n -- <name> )
   75: \G Same behaviour as "Value" if the <name> is not defined
   76: \G DefaultValue searches in the current vocabulary
   77:  save-input bl word >r restore-input throw r> count
   78:  get-current search-wordlist
   79:  IF bl word drop 2drop ELSE Value THEN ;
   80: 
   81: hex
   82: 
   83: Vocabulary Cross
   84: Vocabulary Target
   85: Vocabulary Ghosts
   86: VOCABULARY Minimal
   87: only Forth also Target also also
   88: definitions Forth
   89: 
   90: : T  previous Cross also Target ; immediate
   91: : G  Ghosts ; immediate
   92: : H  previous Forth also Cross ; immediate
   93: 
   94: forth definitions
   95: 
   96: : T  previous Cross also Target ; immediate
   97: : G  Ghosts ; immediate
   98: 
   99: : >cross  also Cross definitions previous ;
  100: : >target also Target definitions previous ;
  101: : >minimal also Minimal definitions previous ;
  102: 
  103: H
  104: 
  105: >CROSS
  106: 
  107: \ 1 Constant Cross-Flag	\ to check whether assembler compiler plug-ins are
  108: 			\ for cross-compiling
  109: \ No! we use "[IFUNDEF]" there to find out whether we are target compiling!!!
  110: 
  111: : comment? ( c-addr u -- c-addr u )
  112:         2dup s" (" compare 0=
  113:         IF    postpone (
  114:         ELSE  2dup s" \" compare 0= IF postpone \ THEN
  115:         THEN ;
  116: 
  117: \ Begin CROSS COMPILER:
  118: 
  119: 
  120: 
  121: \ \ --------------------        Error Handling                  05aug97jaw
  122: 
  123: \ Flags
  124: 
  125: also forth definitions  \ these values may be predefined before
  126:                         \ the cross-compiler is loaded
  127: 
  128: false DefaultValue stack-warn   	 \ check on empty stack at any definition
  129: false DefaultValue create-forward-warn   \ warn on forward declaration of created words
  130: 
  131: [IFUNDEF] DebugMaskSrouce Variable DebugMaskSource 0 DebugMaskSource ! [THEN]
  132: [IFUNDEF] DebugMaskCross  Variable DebugMaskCross  0 DebugMaskCross  ! [THEN]
  133: 
  134: previous >CROSS
  135: 
  136: : .dec
  137:   base @ decimal swap . base ! ;
  138: 
  139: : .sourcepos
  140:   cr sourcefilename type ." :"
  141:   sourceline# .dec ;
  142: 
  143: : warnhead
  144: \G display error-message head
  145: \G perhaps with linenumber and filename
  146:   .sourcepos ." Warning: " ;
  147: 
  148: : empty? depth IF .sourcepos ." Stack not empty!"  THEN ;
  149: 
  150: stack-warn [IF]
  151: : defempty? empty? ;
  152: [ELSE]
  153: : defempty? ; immediate
  154: [THEN]
  155: 
  156: 
  157: 
  158: \ \ GhostNames Ghosts                                  9may93jaw
  159: 
  160: \ second name source to search trough list
  161: 
  162: VARIABLE GhostNames
  163: 0 GhostNames !
  164: 
  165: : GhostName ( -- addr )
  166:     here GhostNames @ , GhostNames ! here 0 ,
  167:     bl word count
  168:     \ 2dup type space
  169:     string, \ !! cfalign ?
  170:     align ;
  171: 
  172: \ Ghost Builder                                        06oct92py
  173: 
  174: \ <T T> new version with temp variable                 10may93jaw
  175: 
  176: VARIABLE VocTemp
  177: 
  178: : <T  get-current VocTemp ! also Ghosts definitions ;
  179: : T>  previous VocTemp @ set-current ;
  180: 
  181: hex
  182: 4711 Constant <fwd>             4712 Constant <res>
  183: 4713 Constant <imm>             4714 Constant <do:>
  184: 
  185: \ iForth makes only immediate directly after create
  186: \ make atonce trick! ?
  187: 
  188: Variable atonce atonce off
  189: 
  190: : NoExec true ABORT" CROSS: Don't execute ghost" ;
  191: 
  192: : GhostHeader <fwd> , 0 , ['] NoExec , ;
  193: 
  194: : >magic ;		\ type of ghost
  195: : >link cell+ ;		\ pointer where ghost is in target, or if unresolved
  196: 			\ points to the where we have to resolve (linked-list)
  197: : >exec cell+ cell+ ;	\ execution symantics (while target compiling) of ghost
  198: : >end 3 cells + ;	\ room for additional tags
  199: 			\ for builder (create, variable...) words the
  200: 			\ execution symantics of words built are placed here
  201: 
  202: Variable executed-ghost \ last executed ghost, needed in tcreate and gdoes>
  203: Variable last-ghost	\ last ghost that is created
  204: Variable last-header-ghost \ last ghost definitions with header
  205: 
  206: : Make-Ghost ( "name" -- ghost )
  207:   >in @ GhostName swap >in !
  208:   <T Create atonce @ IF immediate atonce off THEN
  209:   here tuck swap ! ghostheader T>
  210:   dup last-ghost !
  211:   DOES> dup executed-ghost ! >exec @ execute ;
  212: 
  213: \ ghost words                                          14oct92py
  214: \                                          changed:    10may93py/jaw
  215: 
  216: : gfind   ( string -- ghost true/1 / string false )
  217: \ searches for string in word-list ghosts
  218:   dup count [ ' ghosts >wordlist ] ALiteral search-wordlist
  219:   dup IF >r >body nip r>  THEN ;
  220: 
  221: : gdiscover ( xt -- ghost true | xt false )
  222:   GhostNames
  223:   BEGIN @ dup
  224:   WHILE 2dup
  225:         cell+ @ dup >magic @ <fwd> <>
  226:         >r >link @ = r> and
  227:         IF cell+ @ nip true EXIT THEN
  228:   REPEAT
  229:   drop false ;
  230: 
  231: VARIABLE Already
  232: 
  233: : ghost   ( "name" -- ghost )
  234:   Already off
  235:   >in @  bl word gfind   IF  Already on nip EXIT  THEN
  236:   drop  >in !  Make-Ghost ;
  237: 
  238: : >ghostname ( ghost -- adr len )
  239:   GhostNames
  240:   BEGIN @ dup
  241:   WHILE 2dup cell+ @ =
  242:   UNTIL nip 2 cells + count
  243:   ELSE  2drop 
  244: 	\ true abort" CROSS: Ghostnames inconsistent"
  245: 	s" ?!?!?!"
  246:   THEN ;
  247: 
  248: ' >ghostname ALIAS @name
  249: 
  250: : forward? ( ghost -- flag )
  251:   >magic @ <fwd> = ;
  252: 
  253: \ Predefined ghosts                                    12dec92py
  254: 
  255: ghost 0=                                        drop
  256: ghost branch    ghost ?branch                   2drop
  257: ghost (do)      ghost (?do)                     2drop
  258: ghost (for)                                     drop
  259: ghost (loop)    ghost (+loop)                   2drop
  260: ghost (next)                                    drop
  261: ghost unloop    ghost ;S                        2drop
  262: ghost lit       ghost (compile) ghost !         2drop drop
  263: ghost (does>)   ghost noop                      2drop
  264: ghost (.")      ghost (S")      ghost (ABORT")  2drop drop
  265: ghost '                                         drop
  266: ghost :docol    ghost :doesjump ghost :dodoes   2drop drop
  267: ghost :dovar					drop
  268: ghost over      ghost =         ghost drop      2drop drop
  269: ghost - drop
  270: ghost 2drop drop
  271: ghost 2dup drop
  272: 
  273: \ \ Parameter for target systems                         06oct92py
  274: 
  275: \ we define it ans like...
  276: wordlist Constant target-environment
  277: 
  278: VARIABLE env-current \ save information of current dictionary to restore with environ>
  279: 
  280: : >ENVIRON get-current env-current ! target-environment set-current ;
  281: : ENVIRON> env-current @ set-current ; 
  282: 
  283: >TARGET
  284: 
  285: : environment?
  286:   target-environment search-wordlist 
  287:   IF execute true ELSE false THEN ;
  288: 
  289: : e? name T environment? H 0= ABORT" environment variable not defined!" ;
  290: 
  291: : has? 	name T environment? H 
  292: 	IF 	\ environment variable is present, return its value
  293: 	ELSE	\ environment variable is not present, return false
  294: 		\ !! JAW abort is just for testing
  295: 		false true ABORT" arg" 
  296: 	THEN ;
  297: 
  298: : $has? T environment? H IF ELSE false THEN ;
  299: 
  300: >ENVIRON get-order get-current swap 1+ set-order
  301: true SetValue compiler
  302: true  SetValue cross
  303: true SetValue standard-threading
  304: >TARGET previous
  305: 
  306: 
  307: mach-file count included hex
  308: 
  309: >ENVIRON
  310: 
  311: T has? ec H
  312: [IF]
  313: false DefaultValue relocate
  314: false DefaultValue file
  315: false DefaultValue OS
  316: false DefaultValue prims
  317: false DefaultValue floating
  318: false DefaultValue glocals
  319: false DefaultValue dcomps
  320: false DefaultValue hash
  321: false DefaultValue xconds
  322: false DefaultValue header
  323: [THEN]
  324: 
  325: true DefaultValue interpreter
  326: true DefaultValue ITC
  327: false DefaultValue rom
  328: 
  329: >TARGET
  330: s" relocate" T environment? H 
  331: [IF]	SetValue NIL
  332: [ELSE]	>ENVIRON T NIL H SetValue relocate
  333: [THEN]
  334: 
  335: >CROSS
  336: 
  337: \ \ Create additional parameters                         19jan95py
  338: 
  339: 1 8 lshift Constant maxbyte
  340: T
  341: NIL		   Constant TNIL
  342: cell               Constant tcell
  343: cell<<             Constant tcell<<
  344: cell>bit           Constant tcell>bit
  345: bits/byte          Constant tbits/byte
  346: bits/byte 8 /      Constant tchar
  347: float              Constant tfloat
  348: 1 bits/byte lshift Constant tmaxbyte
  349: H
  350: 
  351: \ Variables                                            06oct92py
  352: 
  353: Variable image
  354: Variable tlast    TNIL tlast !  \ Last name field
  355: Variable tlastcfa \ Last code field
  356: Variable tdoes    \ Resolve does> calls
  357: Variable bit$
  358: 
  359: \ statistics						10jun97jaw
  360: 
  361: Variable headers-named 0 headers-named !
  362: Variable user-vars 0 user-vars !
  363: 
  364: \ Memory initialisation                                05dec92py
  365: 
  366: [IFDEF] Memory \ Memory is a bigFORTH feature
  367:    also Memory
  368:    : initmem ( var len -- )
  369:      2dup swap handle! >r @ r> erase ;
  370:    toss
  371: [ELSE]
  372:    : initmem ( var len -- )
  373:      tuck allocate abort" CROSS: No memory for target"
  374:      ( len var adr ) dup rot !
  375:      ( len adr ) swap erase ;
  376: [THEN]
  377: 
  378: \ MakeKernal                                           12dec92py
  379: 
  380: : makekernel ( targetsize -- targetsize )
  381:   bit$  over 1- tcell>bit rshift 1+ initmem
  382:   image over initmem ;
  383: 
  384: >MINIMAL
  385: : makekernel makekernel ;
  386: 
  387: 
  388: >CROSS
  389: 
  390: \ \ memregion.fs
  391: 
  392: 
  393: Variable last-defined-region    \ pointer to last defined region
  394: Variable region-link            \ linked list with all regions
  395: Variable mirrored-link          \ linked list for mirrored regions
  396: 0 dup mirrored-link ! region-link !
  397: 
  398: 
  399: : >rdp 2 cells + ;
  400: : >rlen cell+ ;
  401: : >rstart ;
  402: 
  403: 
  404: : region ( addr len -- )                \G create a new region
  405:   \ check whether predefined region exists 
  406:   save-input bl word find >r >r restore-input throw r> r> 0= 
  407:   IF	\ make region
  408: 	drop
  409: 	save-input create restore-input throw
  410: 	here last-defined-region !
  411: 	over ( startaddr ) , ( length ) , ( dp ) ,
  412: 	region-link linked name string,
  413:   ELSE	\ store new parameters in region
  414:         bl word drop
  415: 	>body >r r@ last-defined-region !
  416: 	r@ cell+ ! dup r@ ! r> 2 cells + !
  417:   THEN ;
  418: 
  419: : borders ( region -- startaddr endaddr ) \G returns lower and upper region border
  420:   dup @ swap cell+ @ over + ;
  421: 
  422: : extent  ( region -- startaddr len )   \G returns the really used area
  423:   dup @ swap 2 cells + @ over - ;
  424: 
  425: : area ( region -- startaddr totallen ) \G returns the total area
  426:   dup @ swap cell+ @ ;
  427: 
  428: : mirrored                              \G mark a region as mirrored
  429:   mirrored-link
  430:   linked last-defined-region @ , ;
  431: 
  432: : .addr
  433:   base @ >r hex
  434:   tcell 2 u>
  435:   IF s>d <# # # # # '. hold # # # # #> type
  436:   ELSE s>d <# # # # # # #> type
  437:   THEN r> base ! ;
  438: 
  439: : .regions                      \G display region statistic
  440: 
  441:   \ we want to list the regions in the right order
  442:   \ so first collect all regions on stack
  443:   0 region-link @
  444:   BEGIN dup WHILE dup @ REPEAT drop
  445:   BEGIN dup
  446:   WHILE cr 3 cells - >r
  447: 	r@ 4 cells + count tuck type
  448:         12 swap - 0 max spaces space
  449: 	." Start: " r@ @ dup .addr space
  450: 	." End: " r@ 1 cells + @ + .addr space
  451: 	." DP: " r> 2 cells + @ .addr 
  452:   REPEAT drop
  453:   s" rom" T $has? H 0= ?EXIT
  454:   cr ." Mirrored:"
  455:   mirrored-link @
  456:   BEGIN dup
  457:   WHILE	space dup cell+ @ 4 cells + count type @
  458:   REPEAT drop cr
  459:   ;
  460: 
  461: \ -------- predefined regions
  462: 
  463: 0 0 region address-space
  464: \ total memory addressed and used by the target system
  465: 
  466: 0 0 region dictionary
  467: \ rom area for the compiler
  468: 
  469: T has? rom H
  470: [IF]
  471: 0 0 region ram-dictionary mirrored
  472: \ ram area for the compiler
  473: [ELSE]
  474: ' dictionary ALIAS ram-dictionary
  475: [THEN]
  476: 
  477: 0 0 region return-stack
  478: 
  479: 0 0 region data-stack
  480: 
  481: 0 0 region tib-region
  482: 
  483: ' dictionary ALIAS rom-dictionary
  484: 
  485: 
  486: : setup-target ( -- )   \G initialize targets memory space
  487:   s" rom" T $has? H
  488:   IF  \ check for ram and rom...
  489:       address-space area nip
  490:       ram-dictionary area nip
  491:       rom-dictionary area nip
  492:       and and 0=
  493:       ABORT" CROSS: define address-space, rom- , ram-dictionary, with rom-support!"
  494:   THEN
  495:   address-space area nip
  496:   IF
  497:       address-space area
  498:   ELSE
  499:       dictionary area
  500:   THEN
  501:   dup 0=
  502:   ABORT" CROSS: define at least address-space or dictionary!!"
  503:   + makekernel drop ;
  504: 
  505: \ \ switched tdp for rom support				03jun97jaw
  506: 
  507: \ second value is here to store some maximal value for statistics
  508: \ tempdp is also embedded here but has nothing to do with rom support
  509: \ (needs switched dp)
  510: 
  511: variable tempdp	0 ,	\ temporary dp for resolving
  512: variable tempdp-save
  513: 
  514: 0 [IF]
  515: variable romdp 0 ,      \ Dictionary-Pointer for ramarea
  516: variable ramdp 0 ,      \ Dictionary-Pointer for romarea
  517: 
  518: \
  519: variable sramdp		\ start of ram-area for forth
  520: variable sromdp		\ start of rom-area for forth
  521: 
  522: [THEN]
  523: 
  524: 
  525: 0 value tdp
  526: variable fixed		\ flag: true: no automatic switching
  527: 			\	false: switching is done automatically
  528: 
  529: \ Switch-Policy:
  530: \
  531: \ a header is always compiled into rom
  532: \ after a created word (create and variable) compilation goes to ram
  533: \
  534: \ Be careful: If you want to make the data behind create into rom
  535: \ you have to put >rom before create!
  536: 
  537: variable constflag constflag off
  538: 
  539: : (switchram)
  540:   fixed @ ?EXIT s" rom" T $has? H 0= ?EXIT
  541:   ram-dictionary >rdp to tdp ;
  542: 
  543: : switchram
  544:   constflag @
  545:   IF constflag off ELSE (switchram) THEN ;
  546: 
  547: : switchrom
  548:   fixed @ ?EXIT rom-dictionary >rdp to tdp ;
  549: 
  550: : >tempdp ( addr -- ) 
  551:   tdp tempdp-save ! tempdp to tdp tdp ! ;
  552: : tempdp> ( -- )
  553:   tempdp-save @ to tdp ;
  554: 
  555: : >ram  fixed off (switchram) fixed on ;
  556: : >rom  fixed off switchrom fixed on ;
  557: : >auto fixed off switchrom ;
  558: 
  559: 
  560: 
  561: \ : romstart dup sromdp ! romdp ! ;
  562: \ : ramstart dup sramdp ! ramdp ! ;
  563: 
  564: \ default compilation goed to rom
  565: \ when romable support is off, only the rom switch is used (!!)
  566: >auto
  567: 
  568: : there  tdp @ ;
  569: 
  570: >TARGET
  571: 
  572: \ \ Target Memory Handling
  573: 
  574: \ Byte ordering and cell size                          06oct92py
  575: 
  576: : cell+         tcell + ;
  577: : cells         tcell<< lshift ;
  578: : chars         ;
  579: : char+		1 + ;
  580: : floats	tfloat * ;
  581:     
  582: >CROSS
  583: : cell/         tcell<< rshift ;
  584: >TARGET
  585: 20 CONSTANT bl
  586: \ TNIL Constant NIL
  587: 
  588: >CROSS
  589: 
  590: bigendian
  591: [IF]
  592:    : S!  ( n addr -- )  >r s>d r> tcell bounds swap 1-
  593:      DO  maxbyte ud/mod rot I c!  -1 +LOOP  2drop ;
  594:    : S@  ( addr -- n )  >r 0 0 r> tcell bounds
  595:      DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  LOOP d>s ;
  596:    : Sc!  ( n addr -- )  >r s>d r> tchar bounds swap 1-
  597:      DO  maxbyte ud/mod rot I c!  -1 +LOOP  2drop ;
  598:    : Sc@  ( addr -- n )  >r 0 0 r> tchar bounds
  599:      DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  LOOP d>s ;
  600: [ELSE]
  601:    : S!  ( n addr -- )  >r s>d r> tcell bounds
  602:      DO  maxbyte ud/mod rot I c!  LOOP  2drop ;
  603:    : S@  ( addr -- n )  >r 0 0 r> tcell bounds swap 1-
  604:      DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  -1 +LOOP d>s ;
  605:    : Sc!  ( n addr -- )  >r s>d r> tchar bounds
  606:      DO  maxbyte ud/mod rot I c!  LOOP  2drop ;
  607:    : Sc@  ( addr -- n )  >r 0 0 r> tchar bounds swap 1-
  608:      DO  maxbyte * swap maxbyte um* rot + swap I c@ + swap  -1 +LOOP d>s ;
  609: [THEN]
  610: 
  611: >CROSS
  612: \ Bit string manipulation                               06oct92py
  613: \                                                       9may93jaw
  614: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
  615: : bits ( n -- n ) chars Bittable + c@ ;
  616: 
  617: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
  618: : +bit ( addr n -- )  >bit over c@ or swap c! ;
  619: : -bit ( addr n -- )  >bit invert over c@ and swap c! ;
  620: : relon ( taddr -- )  bit$ @ swap cell/ +bit ;
  621: : reloff ( taddr -- )  bit$ @ swap cell/ -bit ;
  622: 
  623: \ Target memory access                                 06oct92py
  624: 
  625: : align+  ( taddr -- rest )
  626:     tcell tuck 1- and - [ tcell 1- ] Literal and ;
  627: : cfalign+  ( taddr -- rest )
  628:     \ see kernel.fs:cfaligned
  629:     /maxalign tuck 1- and - [ /maxalign 1- ] Literal and ;
  630: 
  631: >TARGET
  632: : aligned ( taddr -- ta-addr )  dup align+ + ;
  633: \ assumes cell alignment granularity (as GNU C)
  634: 
  635: : cfaligned ( taddr1 -- taddr2 )
  636:     \ see kernel.fs
  637:     dup cfalign+ + ;
  638: 
  639: >CROSS
  640: : >image ( taddr -- absaddr )  image @ + ;
  641: >TARGET
  642: : @  ( taddr -- w )     >image S@ ;
  643: : !  ( w taddr -- )     >image S! ;
  644: : c@ ( taddr -- char )  >image Sc@ ;
  645: : c! ( char taddr -- )  >image Sc! ;
  646: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
  647: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
  648: 
  649: \ Target compilation primitives                        06oct92py
  650: \ included A!                                          16may93jaw
  651: 
  652: : here  ( -- there )    there ;
  653: : allot ( n -- )        tdp +! ;
  654: : ,     ( w -- )        T here H tcell T allot  ! H T here drop H ;
  655: : c,    ( char -- )     T here    tchar allot c! H ;
  656: : align ( -- )          T here H align+ 0 ?DO  bl T c, H LOOP ;
  657: : cfalign ( -- )
  658:     T here H cfalign+ 0 ?DO  bl T c, tchar H +LOOP ;
  659: 
  660: : >address		dup 0>= IF tchar / THEN ;
  661: : A!                    swap >address swap dup relon T ! H ;
  662: : A,    ( w -- )        >address T here H relon T , H ;
  663: 
  664: >CROSS
  665: 
  666: : tcmove ( source dest len -- )
  667: \G cmove in target memory
  668:   tchar * bounds
  669:   ?DO  dup T c@ H I T c! H 1+
  670:   tchar +LOOP  drop ;
  671: 
  672: >TARGET
  673: H also Forth definitions \ ." asm: " order
  674: 
  675: : X 	also target bl word find
  676: 	IF	state @ IF compile,
  677: 		ELSE execute THEN
  678: 	ELSE	previous ABORT" Cross: access method not supported!"
  679: 	THEN 
  680: 	previous ; immediate
  681: 
  682: [IFDEF] asm-include asm-include [THEN] hex
  683: 
  684: previous
  685: >CROSS H
  686: 
  687: \ \ --------------------        Compiler Plug Ins               01aug97jaw
  688: 
  689: \  Compiler States
  690: 
  691: Variable comp-state
  692: 0 Constant interpreting
  693: 1 Constant compiling
  694: 2 Constant resolving
  695: 3 Constant assembling
  696: 
  697: Defer lit, ( n -- )
  698: Defer alit, ( n -- )
  699: 
  700: Defer branch, ( target-addr -- )	\ compiles a branch
  701: Defer ?branch, ( target-addr -- )	\ compiles a ?branch
  702: Defer branchmark, ( -- branch-addr )	\ reserves room for a branch
  703: Defer ?branchmark, ( -- branch-addr )	\ reserves room for a ?branch
  704: Defer ?domark, ( -- branch-addr )	\ reserves room for a ?do branch
  705: Defer branchto, ( -- )			\ actual program position is target of a branch (do e.g. alignment)
  706: Defer branchtoresolve, ( branch-addr -- ) \ resolves a forward reference from branchmark
  707: Defer branchfrom, ( -- )		\ ?!
  708: Defer branchtomark, ( -- target-addr )	\ marks a branch destination
  709: 
  710: Defer colon, ( tcfa -- )		\ compiles call to tcfa at current position
  711: Defer colonmark, ( -- addr )		\ marks a colon call
  712: Defer colon-resolve ( tcfa addr -- )
  713: 
  714: Defer addr-resolve ( target-addr addr -- )
  715: Defer doer-resolve ( ghost res-pnt target-addr addr -- ghost res-pnt )
  716: 
  717: Defer do,	( -- do-token )
  718: Defer ?do,	( -- ?do-token )
  719: Defer for,	( -- for-token )
  720: Defer loop,	( do-token / ?do-token -- )
  721: Defer +loop,	( do-token / ?do-token -- )
  722: Defer next,	( for-token )
  723: 
  724: [IFUNDEF] ca>native
  725: defer ca>native	
  726: [THEN]
  727: 
  728: >TARGET
  729: DEFER >body             \ we need the system >body
  730: 			\ and the target >body
  731: >CROSS
  732: T 2 cells H VALUE xt>body
  733: DEFER doprim,	\ compiles start of a primitive
  734: DEFER docol,   	\ compiles start of a colon definition
  735: DEFER doer,		
  736: DEFER fini,      \ compiles end of definition ;s
  737: DEFER doeshandler,
  738: DEFER dodoes,
  739: 
  740: DEFER ]comp     \ starts compilation
  741: DEFER comp[     \ ends compilation
  742: 
  743: : (cc) T a, H ;					' (cc) IS colon,
  744: 
  745: : (cr) >tempdp ]comp colon, comp[ tempdp> ; 	' (cr) IS colon-resolve
  746: : (ar) T ! H ;					' (ar) IS addr-resolve
  747: : (dr)  ( ghost res-pnt target-addr addr )
  748: 	>tempdp drop over 
  749: 	dup >magic @ <do:> =
  750: 	IF 	doer,
  751: 	ELSE	dodoes,
  752: 	THEN 
  753: 	tempdp> ;				' (dr) IS doer-resolve
  754: 
  755: : (cm) ( -- addr )
  756:     T here align H
  757:     -1 colon, ;					' (cm) IS colonmark,
  758: 
  759: >TARGET
  760: : compile, colon, ;
  761: >CROSS
  762: 
  763: \ file loading
  764: 
  765: : >fl-id   1 cells + ;
  766: : >fl-name 2 cells + ;
  767: 
  768: Variable filelist 0 filelist !
  769: 0 Value	 filemem
  770: : loadfile filemem >fl-name ;
  771: 
  772: 1 [IF] \ !! JAW WIP
  773: 
  774: : add-included-file ( adr len -- )
  775: 	dup char+ >fl-name allocate throw >r
  776: 	r@ >fl-name place
  777: 	filelist @ r@ !
  778: 	r> dup filelist ! to FileMem
  779: 	;
  780: 
  781: : included? ( c-addr u -- f )
  782:   	filelist
  783: 	BEGIN	@ dup
  784: 	WHILE	>r r@ 1 cells + count compare 0=
  785: 		IF rdrop 2drop true EXIT THEN
  786: 		r>
  787: 	REPEAT
  788: 	2drop drop false ;	
  789: 
  790: : included 
  791: \	cr ." Including: " 2dup type ." ..."
  792: 	FileMem >r
  793: 	2dup add-included-file included 
  794: 	r> to FileMem ;
  795: 
  796: : include bl word count included ;
  797: 
  798: : require bl word count included ;
  799: 
  800: [THEN]
  801: 
  802: \ resolve structure
  803: 
  804: : >next ;		\ link to next field
  805: : >tag cell+ ;		\ indecates type of reference: 0: call, 1: address, 2: doer
  806: : >taddr cell+ cell+ ;	
  807: : >ghost 3 cells + ;
  808: : >file 4 cells + ;
  809: : >line 5 cells + ;
  810: 
  811: : (refered) ( ghost addr tag -- )
  812: \G creates a reference to ghost at address taddr
  813:     rot >r here r@ >link @ , r> >link ! 
  814:     ( taddr tag ) ,
  815:     ( taddr ) , 
  816:     last-header-ghost @ , 
  817:     loadfile , 
  818:     sourceline# , 
  819:   ;
  820: 
  821: : refered ( ghost tag -- )
  822: \G creates a resolve structure
  823:     T here aligned H swap (refered)
  824:   ;
  825: 
  826: : killref ( addr ghost -- )
  827: \G kills a forward reference to ghost at position addr
  828: \G this is used to eleminate a :dovar refence after making a DOES>
  829:     dup >magic @ <fwd> <> IF 2drop EXIT THEN
  830:     swap >r >link
  831:     BEGIN dup @ dup  ( addr last this )
  832:     WHILE dup >taddr @ r@ =
  833:  	 IF   @ over !
  834: 	 ELSE nip THEN
  835:     REPEAT rdrop 2drop 
  836:   ;
  837: 
  838: Defer resolve-warning
  839: 
  840: : reswarn-test ( ghost res-struct -- ghost res-struct )
  841:   over cr ." Resolving " >ghostname type dup ."  in " >ghost @ >ghostname type ;
  842: 
  843: : reswarn-forward ( ghost res-struct -- ghost res-struct )
  844:   over warnhead >ghostname type dup ."  is referenced in " 
  845:   >ghost @ >ghostname type ;
  846: 
  847: \ ' reswarn-test IS resolve-warning
  848:  
  849: \ resolve                                              14oct92py
  850: 
  851:  : resolve-loop ( ghost resolve-list tcfa -- )
  852:     >r
  853:     BEGIN dup WHILE 
  854: \  	  dup >tag @ 2 = IF reswarn-forward THEN
  855: 	  resolve-warning 
  856: 	  r@ over >taddr @ 
  857: 	  2 pick >tag @
  858: 	  CASE	0 OF colon-resolve ENDOF
  859: 		1 OF addr-resolve ENDOF
  860: 		2 OF doer-resolve ENDOF
  861: 	  ENDCASE
  862: 	  @ \ next list element
  863:     REPEAT 2drop rdrop 
  864:   ;
  865: 
  866: \ : resolve-loop ( ghost tcfa -- ghost tcfa )
  867: \  >r dup >link @
  868: \  BEGIN  dup  WHILE  dup T @ H r@ rot T ! H REPEAT  drop r> ;
  869: 
  870: \ exists                                                9may93jaw
  871: 
  872: Variable TWarnings
  873: TWarnings on
  874: Variable Exists-Warnings
  875: Exists-Warnings on
  876: 
  877: : exists ( ghost tcfa -- )
  878:   over GhostNames
  879:   BEGIN @ dup
  880:   WHILE 2dup cell+ @ =
  881:   UNTIL
  882:         2 cells + count
  883:         TWarnings @ Exists-Warnings @ and
  884:         IF warnhead type ."  exists"
  885:         ELSE 2drop THEN
  886:         drop swap >link !
  887:   ELSE  true abort" CROSS: Ghostnames inconsistent "
  888:   THEN ;
  889: 
  890: : resolve  ( ghost tcfa -- )
  891: \G resolve referencies to ghost with tcfa
  892:     \ is ghost resolved?, second resolve means another definition with the
  893:     \ same name
  894:     over forward? 0= IF  exists EXIT THEN
  895:     \ get linked-list
  896:     swap >r r@ >link @ swap \ ( list tcfa R: ghost )
  897:     \ mark ghost as resolved
  898:     dup r@ >link ! <res> r@ >magic !
  899:     \ loop through forward referencies
  900:     r> -rot 
  901:     comp-state @ >r Resolving comp-state !
  902:     resolve-loop 
  903:     r> comp-state !
  904: 
  905:     ['] noop IS resolve-warning 
  906:   ;
  907: 
  908: \ gexecute ghost,                                      01nov92py
  909: 
  910: : is-forward   ( ghost -- )
  911:   colonmark, 0 (refered) ; \ compile space for call
  912: 
  913: : is-resolved   ( ghost -- )
  914:   >link @ colon, ; \ compile-call
  915: 
  916: : gexecute   ( ghost -- )
  917:   dup @ <fwd> = IF  is-forward  ELSE  is-resolved  THEN ;
  918: 
  919: : addr,  ( ghost -- )
  920:   dup @ <fwd> = IF  1 refered 0 T a, H ELSE >link @ T a, H THEN ;
  921: 
  922: \ !! : ghost,     ghost  gexecute ;
  923: 
  924: \ .unresolved                                          11may93jaw
  925: 
  926: variable ResolveFlag
  927: 
  928: \ ?touched                                             11may93jaw
  929: 
  930: : ?touched ( ghost -- flag ) dup forward? swap >link @
  931:                                0 <> and ;
  932: 
  933: : .forwarddefs ( ghost -- )
  934: 	."  appeared in:"
  935: 	>link
  936: 	BEGIN	@ dup
  937: 	WHILE	cr 5 spaces
  938: 		dup >ghost @ >ghostname type
  939: 		."  file " dup >file @ ?dup IF count type ELSE ." CON" THEN
  940: 		."  line " dup >line @ .dec
  941: 	REPEAT 
  942: 	drop ;
  943: 
  944: : ?resolved  ( ghostname -- )
  945:   dup cell+ @ ?touched
  946:   IF  	dup 
  947: 	cell+ cell+ count cr type ResolveFlag on 
  948: 	cell+ @ .forwarddefs
  949:   ELSE 	drop 
  950:   THEN ;
  951: 
  952: >MINIMAL
  953: : .unresolved  ( -- )
  954:   ResolveFlag off cr ." Unresolved: "
  955:   Ghostnames
  956:   BEGIN @ dup
  957:   WHILE dup ?resolved
  958:   REPEAT drop ResolveFlag @
  959:   IF
  960:       -1 abort" Unresolved words!"
  961:   ELSE
  962:       ." Nothing!"
  963:   THEN
  964:   cr ;
  965: 
  966: : .stats
  967:   base @ >r decimal
  968:   cr ." named Headers: " headers-named @ . 
  969:   r> base ! ;
  970: 
  971: >CROSS
  972: \ Header states                                        12dec92py
  973: 
  974: : flag! ( 8b -- )   tlast @ dup >r T c@ xor r> c! H ;
  975: 
  976: VARIABLE ^imm
  977: 
  978: >TARGET
  979: : immediate     40 flag!
  980:                 ^imm @ @ dup <imm> = IF  drop  EXIT  THEN
  981:                 <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
  982:                 <imm> ^imm @ ! ;
  983: : restrict      20 flag! ;
  984: 
  985: : isdoer	
  986: \G define a forth word as doer, this makes obviously only sence on
  987: \G forth processors such as the PSC1000
  988: 		<do:> last-header-ghost @ >magic ! ;
  989: >CROSS
  990: 
  991: \ ALIAS2 ansforth conform alias                          9may93jaw
  992: 
  993: : ALIAS2 create here 0 , DOES> @ execute ;
  994: \ usage:
  995: \ ' <name> alias2 bla !
  996: 
  997: \ Target Header Creation                               01nov92py
  998: 
  999: >TARGET
 1000: : string,  ( addr count -- )
 1001:   dup T c, H bounds  ?DO  I c@ T c, H  LOOP ; 
 1002: : name,  ( "name" -- )  bl word count T string, cfalign H ;
 1003: : view,   ( -- ) ( dummy ) ;
 1004: >CROSS
 1005: 
 1006: \ Target Document Creation (goes to crossdoc.fd)       05jul95py
 1007: 
 1008: s" ./doc/crossdoc.fd" r/w create-file throw value doc-file-id
 1009: \ contains the file-id of the documentation file
 1010: 
 1011: : T-\G ( -- )
 1012:     source >in @ /string doc-file-id write-line throw
 1013:     postpone \ ;
 1014: 
 1015: Variable to-doc  to-doc on
 1016: 
 1017: : cross-doc-entry  ( -- )
 1018:     to-doc @ tlast @ 0<> and	\ not an anonymous (i.e. noname) header
 1019:     IF
 1020: 	s" " doc-file-id write-line throw
 1021: 	s" make-doc " doc-file-id write-file throw
 1022: 	tlast @ >image count $1F and doc-file-id write-file throw
 1023: 	>in @
 1024: 	[char] ( parse 2drop
 1025: 	[char] ) parse doc-file-id write-file throw
 1026: 	s"  )" doc-file-id write-file throw
 1027: 	[char] \ parse 2drop					
 1028: 	T-\G
 1029: 	>in !
 1030:     THEN ;
 1031: 
 1032: \ Target TAGS creation
 1033: 
 1034: s" kernel.TAGS" r/w create-file throw value tag-file-id
 1035: \ contains the file-id of the tags file
 1036: 
 1037: Create tag-beg 2 c,  7F c, bl c,
 1038: Create tag-end 2 c,  bl c, 01 c,
 1039: Create tag-bof 1 c,  0C c,
 1040: 
 1041: 2variable last-loadfilename 0 0 last-loadfilename 2!
 1042: 	    
 1043: : put-load-file-name ( -- )
 1044:     loadfilename 2@ last-loadfilename 2@ d<>
 1045:     IF
 1046: 	tag-bof count tag-file-id write-line throw
 1047: 	sourcefilename 2dup
 1048: 	tag-file-id write-file throw
 1049: 	last-loadfilename 2!
 1050: 	s" ,0" tag-file-id write-line throw
 1051:     THEN ;
 1052: 
 1053: : cross-tag-entry  ( -- )
 1054:     tlast @ 0<>	\ not an anonymous (i.e. noname) header
 1055:     IF
 1056: 	put-load-file-name
 1057: 	source >in @ min tag-file-id write-file throw
 1058: 	tag-beg count tag-file-id write-file throw
 1059: 	tlast @ >image count $1F and tag-file-id write-file throw
 1060: 	tag-end count tag-file-id write-file throw
 1061: 	base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
 1062: \	>in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
 1063: 	s" ,0" tag-file-id write-line throw
 1064: 	base !
 1065:     THEN ;
 1066: 
 1067: \ Check for words
 1068: 
 1069: Defer skip? ' false IS skip?
 1070: 
 1071: : defined? ( -- flag ) \ name
 1072:     ghost forward? 0= ;
 1073: 
 1074: : needed? ( -- flag ) \ name
 1075: \G returns a false flag when
 1076: \G a word is not defined
 1077: \G a forward reference exists
 1078: \G so the definition is not skipped!
 1079:     bl word gfind
 1080:     IF dup forward?
 1081: 	nip
 1082: 	0=
 1083:     ELSE  drop true  THEN ;
 1084: 
 1085: : doer? ( -- flag ) \ name
 1086:     ghost >magic @ <do:> = ;
 1087: 
 1088: : skip-defs ( -- )
 1089:     BEGIN  refill  WHILE  source -trailing nip 0= UNTIL  THEN ;
 1090: 
 1091: \ Target header creation
 1092: 
 1093: Variable CreateFlag
 1094: CreateFlag off
 1095: 
 1096: Variable NoHeaderFlag
 1097: NoHeaderFlag off
 1098: 
 1099: : 0.r ( n1 n2 -- ) 
 1100:     base @ >r hex 
 1101:     0 swap <# 0 ?DO # LOOP #> type 
 1102:     r> base ! ;
 1103: : .sym
 1104:   bounds 
 1105:   DO I c@ dup
 1106: 	CASE	'/ OF drop ." \/" ENDOF
 1107: 		'\ OF drop ." \\" ENDOF
 1108: 		dup OF emit ENDOF
 1109: 	ENDCASE
 1110:     LOOP ;
 1111: 
 1112: : (Theader ( "name" -- ghost )
 1113:     \  >in @ bl word count type 2 spaces >in !
 1114:     \ wordheaders will always be compiled to rom
 1115:     switchrom
 1116:     \ build header in target
 1117:     NoHeaderFlag @
 1118:     IF  NoHeaderFlag off
 1119:     ELSE
 1120: 	T align H view,
 1121: 	tlast @ dup 0> IF  T 1 cells - H THEN T A, H  there tlast !
 1122: 	1 headers-named +!	\ Statistic
 1123: 	>in @ T name, H >in !
 1124:     THEN
 1125:     T cfalign here H tlastcfa !
 1126:     \ Symbol table
 1127: \    >in @ cr ." sym:s/CFA=" there 4 0.r ." /"  bl word count .sym ." /g" cr >in !
 1128:     CreateFlag @
 1129:     IF
 1130: 	>in @ alias2 swap >in !         \ create alias in target
 1131: 	>in @ ghost swap >in !
 1132: 	swap also ghosts ' previous swap !     \ tick ghost and store in alias
 1133: 	CreateFlag off
 1134:     ELSE ghost
 1135:     THEN
 1136:     dup Last-Header-Ghost !
 1137:     dup >magic ^imm !     \ a pointer for immediate
 1138:     Already @
 1139:     IF  dup >end tdoes !
 1140:     ELSE 0 tdoes !
 1141:     THEN
 1142:     80 flag!
 1143:     cross-doc-entry cross-tag-entry ;
 1144: 
 1145: VARIABLE ;Resolve 1 cells allot
 1146: \ this is the resolver information from ":"
 1147: \ resolving is done by ";"
 1148: 
 1149: : Theader  ( "name" -- ghost )
 1150:   (THeader dup there resolve 0 ;Resolve ! ;
 1151: 
 1152: >TARGET
 1153: : Alias    ( cfa -- ) \ name
 1154:     >in @ skip? IF  2drop  EXIT  THEN  >in !
 1155:     dup 0< s" prims" T $has? H 0= and
 1156:     IF
 1157: 	.sourcepos ." needs prim: " >in @ bl word count type >in ! cr
 1158:     THEN
 1159:     (THeader over resolve T A, H 80 flag! ;
 1160: : Alias:   ( cfa -- ) \ name
 1161:     >in @ skip? IF  2drop  EXIT  THEN  >in !
 1162:     dup 0< s" prims" T $has? H 0= and
 1163:     IF
 1164: 	.sourcepos ." needs doer: " >in @ bl word count type >in ! cr
 1165:     THEN
 1166:     ghost tuck swap resolve <do:> swap >magic ! ;
 1167: >CROSS
 1168: 
 1169: \ Conditionals and Comments                            11may93jaw
 1170: 
 1171: : ;Cond
 1172:   postpone ;
 1173:   swap ! ;  immediate
 1174: 
 1175: : Cond: ( -- ) \ name {code } ;
 1176:   atonce on
 1177:   ghost
 1178:   >exec
 1179:   :NONAME ;
 1180: 
 1181: : restrict? ( -- )
 1182: \ aborts on interprete state - ae
 1183:   state @ 0= ABORT" CROSS: Restricted" ;
 1184: 
 1185: : Comment ( -- )
 1186:   >in @ atonce on ghost swap >in ! ' swap >exec ! ;
 1187: 
 1188: Comment (       Comment \
 1189: 
 1190: \ compile                                              10may93jaw
 1191: 
 1192: : compile  ( -- ) \ name
 1193:   restrict?
 1194:   bl word gfind dup 0= ABORT" CROSS: Can't compile "
 1195:   0> ( immediate? )
 1196:   IF    >exec @ compile,
 1197:   ELSE  postpone literal postpone gexecute  THEN ;
 1198:                                         immediate
 1199: 
 1200: : [G'] 
 1201: \G ticks a ghost and returns its address
 1202:   bl word gfind 0= ABORT" CROSS: Ghost don't exists"
 1203:   state @
 1204:   IF   postpone literal
 1205:   THEN ; immediate
 1206: 
 1207: : ghost>cfa
 1208:   dup forward? ABORT" CROSS: forward " >link @ ;
 1209:                
 1210: >TARGET
 1211: 
 1212: : '  ( -- cfa ) 
 1213: \ returns the target-cfa of a ghost
 1214:   bl word gfind 0= ABORT" CROSS: Ghost don't exists"
 1215:   ghost>cfa ;
 1216: 
 1217: Cond: [']  T ' H alit, ;Cond
 1218: 
 1219: >CROSS
 1220: 
 1221: : [T']
 1222: \ returns the target-cfa of a ghost, or compiles it as literal
 1223:   postpone [G'] state @ IF postpone ghost>cfa ELSE ghost>cfa THEN ; immediate
 1224: 
 1225: \ \ threading modell					13dec92py
 1226: \ modularized						14jun97jaw
 1227: 
 1228: : fillcfa   ( usedcells -- )
 1229:   T cells H xt>body swap - 0 ?DO 0 T c, tchar H +LOOP ;
 1230: 
 1231: : (>body)   ( cfa -- pfa ) xt>body + ;		' (>body) T IS >body H
 1232: 
 1233: : (doer,)   ( ghost -- ) ]comp gexecute comp[ 1 fillcfa ;   ' (doer,) IS doer,
 1234: 
 1235: : (docol,)  ( -- ) [G'] :docol doer, ;		' (docol,) IS docol,
 1236: 
 1237: : (doprim,) ( -- )
 1238:   there xt>body + ca>native T a, H 1 fillcfa ;	' (doprim,) IS doprim,
 1239: 
 1240: : (doeshandler,) ( -- ) 
 1241:   T cfalign H compile :doesjump T 0 , H ; 	' (doeshandler,) IS doeshandler,
 1242: 
 1243: : (dodoes,) ( does-action-ghost -- )
 1244:   ]comp [G'] :dodoes gexecute comp[
 1245:   addr,
 1246:   T here H tcell - reloff 2 fillcfa ;		' (dodoes,) IS dodoes,
 1247: 
 1248: : (lit,) ( n -- )   compile lit T  ,  H ;	' (lit,) IS lit,
 1249: 
 1250: : (alit,) ( n -- )  lit, T here cell - H relon ;	' (alit,) IS alit,
 1251: 
 1252: : (fini,)         compile ;s ;                ' (fini,) IS fini,
 1253: 
 1254: [IFUNDEF] (code) 
 1255: Defer (code)
 1256: Defer (end-code)
 1257: [THEN]
 1258: 
 1259: >TARGET
 1260: : Code
 1261:   defempty?
 1262:   (THeader there resolve
 1263:   [ T e? prims H 0= [IF] T e? ITC H [ELSE] true [THEN] ] [IF]
 1264:   doprim, 
 1265:   [THEN]
 1266:   depth (code) ;
 1267: 
 1268: : Code:
 1269:   defempty?
 1270:     ghost dup there ca>native resolve  <do:> swap >magic !
 1271:     depth (code) ;
 1272: 
 1273: : end-code
 1274:     (end-code)
 1275:     depth ?dup IF   1- <> ABORT" CROSS: Stack changed"
 1276:     ELSE true ABORT" CROSS: Stack empty" THEN
 1277:     ;
 1278: 
 1279: ( Cond ) : chars tchar * ; ( Cond )
 1280: 
 1281: >CROSS
 1282: 
 1283: \ tLiteral                                             12dec92py
 1284: 
 1285: >TARGET
 1286: Cond: \G  T-\G ;Cond
 1287: 
 1288: Cond:  Literal ( n -- )   restrict? lit, ;Cond
 1289: Cond: ALiteral ( n -- )   restrict? alit, ;Cond
 1290: 
 1291: : Char ( "<char>" -- )  bl word char+ c@ ;
 1292: Cond: [Char]   ( "<char>" -- )  restrict? Char  lit, ;Cond
 1293: 
 1294: \ some special literals					27jan97jaw
 1295: 
 1296: \ !! Known Bug: Special Literals and plug-ins work only correct
 1297: \ on 16 and 32 Bit Targets and 32 Bit Hosts!
 1298: 
 1299: Cond: MAXU
 1300:   restrict? 
 1301:   tcell 1 cells u> 
 1302:   IF	compile lit tcell 0 ?DO FF T c, H LOOP 
 1303:   ELSE	$ffffffff lit, THEN
 1304:   ;Cond
 1305: 
 1306: Cond: MINI
 1307:   restrict?
 1308:   tcell 1 cells u>
 1309:   IF	compile lit bigendian 
 1310:   	IF	80 T c, H tcell 1 ?DO 0 T c, H LOOP 
 1311:   	ELSE  	tcell 1 ?DO 0 T c, H LOOP 80 T c, H
 1312:   	THEN
 1313:   ELSE	tcell 2 = IF $8000 ELSE $80000000 THEN lit, THEN
 1314:   ;Cond
 1315:  
 1316: Cond: MAXI
 1317:  restrict?
 1318:  tcell 1 cells u>
 1319:  IF	compile lit bigendian 
 1320: 	IF 	7F T c, H tcell 1 ?DO FF T c, H LOOP
 1321: 	ELSE 	tcell 1 ?DO FF T c, H LOOP 7F T c, H
 1322:  	THEN
 1323:  ELSE	tcell 2 = IF $7fff ELSE $7fffffff THEN lit, THEN
 1324:  ;Cond
 1325: 
 1326: >CROSS
 1327: \ Target compiling loop                                12dec92py
 1328: \ ">tib trick thrown out                               10may93jaw
 1329: \ number? defined at the top                           11may93jaw
 1330: 
 1331: \ compiled word might leave items on stack!
 1332: : tcom ( in name -- )
 1333:   gfind  ?dup  IF    0> IF    nip >exec @ execute
 1334:                         ELSE  nip gexecute  THEN EXIT THEN
 1335:   number? dup  IF    0> IF swap lit,  THEN  lit,  drop
 1336:                ELSE  2drop >in !
 1337:                ghost gexecute THEN  ;
 1338: 
 1339: >TARGET
 1340: \ : ; DOES>                                            13dec92py
 1341: \ ]                                                     9may93py/jaw
 1342: 
 1343: : ] state on
 1344:     Compiling comp-state !
 1345:     BEGIN
 1346:         BEGIN >in @ bl word
 1347:               dup c@ 0= WHILE 2drop refill 0=
 1348:               ABORT" CROSS: End of file while target compiling"
 1349:         REPEAT
 1350:         tcom
 1351:         state @
 1352:         0=
 1353:     UNTIL ;
 1354: 
 1355: \ by the way: defining a second interpreter (a compiler-)loop
 1356: \             is not allowed if a system should be ans conform
 1357: 
 1358: : : ( -- colon-sys ) \ Name
 1359:   defempty?
 1360:   constflag off \ don't let this flag work over colon defs
 1361: 		\ just to go sure nothing unwanted happens
 1362:   >in @ skip? IF  drop skip-defs  EXIT  THEN  >in !
 1363:   (THeader ;Resolve ! there ;Resolve cell+ !
 1364:   docol, ]comp depth T ] H ;
 1365: 
 1366: : :noname ( -- colon-sys )
 1367:   T cfalign H there docol, 0 ;Resolve ! depth T ] H ;
 1368: 
 1369: Cond: EXIT ( -- )  restrict?  compile ;S  ;Cond
 1370: 
 1371: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
 1372: 
 1373: >CROSS
 1374: : LastXT ;Resolve @ 0= abort" CROSS: no definition for LastXT"
 1375:          ;Resolve cell+ @ ;
 1376: 
 1377: >TARGET
 1378: 
 1379: Cond: recurse ( -- ) Last-Ghost @ gexecute ;Cond
 1380: 
 1381: Cond: ; ( -- ) restrict?
 1382:                depth ?dup IF   1- <> ABORT" CROSS: Stack changed"
 1383:                           ELSE true ABORT" CROSS: Stack empty" THEN
 1384:                fini,
 1385:                comp[
 1386:                state off
 1387:                ;Resolve @
 1388:                IF ;Resolve @ ;Resolve cell+ @ resolve THEN
 1389: 		Interpreting comp-state !
 1390:                ;Cond
 1391: Cond: [  restrict? state off Interpreting comp-state ! ;Cond
 1392: 
 1393: >CROSS
 1394: 
 1395: Create GhostDummy ghostheader
 1396: <res> GhostDummy >magic !
 1397: 
 1398: : !does ( does-action -- )
 1399: \ !! zusammenziehen und dodoes, machen!
 1400:     tlastcfa @ [G'] :dovar killref
 1401: \    tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
 1402: \ !! geht so nicht, da dodoes, ghost will!
 1403:     GhostDummy >link ! GhostDummy 
 1404:     tlastcfa @ >tempdp dodoes, tempdp> ;
 1405: 
 1406: >TARGET
 1407: Cond: DOES> restrict?
 1408:         compile (does>) doeshandler, 
 1409: 	\ resolve words made by builders
 1410: 	tdoes @ ?dup IF  @ T here H resolve THEN
 1411:         ;Cond
 1412: : DOES> switchrom doeshandler, T here H !does depth T ] H ;
 1413: 
 1414: >CROSS
 1415: \ Creation                                             01nov92py
 1416: 
 1417: \ Builder                                               11may93jaw
 1418: 
 1419: : Builder    ( Create-xt do:-xt "name" -- )
 1420: \ builds up a builder in current vocabulary
 1421: \ create-xt is executed when word is interpreted
 1422: \ do:-xt is executet when the created word from builder is executed
 1423: \ for do:-xt an additional entry after the normal ghost-enrys is used
 1424: 
 1425:   >in @ alias2 swap dup >in ! >r >r
 1426:   Make-Ghost 
 1427:   rot swap >exec dup @ ['] NoExec <>
 1428:   IF 2drop ELSE ! THEN
 1429:   ,
 1430:   r> r> >in !
 1431:   also ghosts ' previous swap ! ;
 1432: \  DOES>  dup >exec @ execute ;
 1433: 
 1434: : gdoes,  ( ghost -- )
 1435: \ makes the codefield for a word that is built
 1436:   >end @ dup forward? 0=
 1437:   IF
 1438: 	dup >magic @ <do:> =
 1439: 	IF 	 doer, 
 1440: 	ELSE	dodoes,
 1441: 	THEN
 1442: 	EXIT
 1443:   THEN
 1444: \  compile :dodoes gexecute
 1445: \  T here H tcell - reloff 
 1446:   2 refered 
 1447:   0 fillcfa
 1448:   ;
 1449: 
 1450: : TCreate ( <name> -- )
 1451:   executed-ghost @
 1452:   CreateFlag on
 1453:   create-forward-warn
 1454:   IF ['] reswarn-forward IS resolve-warning THEN
 1455:   Theader >r dup gdoes,
 1456: \ stores execution symantic in the built word
 1457:   >end @ >exec @ r> >exec ! ;
 1458: 
 1459: : RTCreate ( <name> -- )
 1460: \ creates a new word with code-field in ram
 1461:   executed-ghost @
 1462:   CreateFlag on
 1463:   create-forward-warn
 1464:   IF ['] reswarn-forward IS resolve-warning THEN
 1465:   \ make Alias
 1466:   (THeader there 0 T a, H 80 flag! ( S executed-ghost new-ghost )
 1467:   \ store  poiter to code-field
 1468:   switchram T cfalign H
 1469:   there swap T ! H
 1470:   there tlastcfa ! 
 1471:   dup there resolve 0 ;Resolve !
 1472:   >r dup gdoes,
 1473:   >end @ >exec @ r> >exec ! ;
 1474: 
 1475: : Build:  ( -- [xt] [colon-sys] )
 1476:   :noname postpone TCreate ;
 1477: 
 1478: : BuildSmart:  ( -- [xt] [colon-sys] )
 1479:   :noname
 1480:   [ T has? rom H [IF] ]
 1481:   postpone RTCreate
 1482:   [ [ELSE] ]
 1483:   postpone TCreate 
 1484:   [ [THEN] ] ;
 1485: 
 1486: : gdoes>  ( ghost -- addr flag )
 1487:   executed-ghost @
 1488:   state @ IF  gexecute true EXIT  THEN
 1489:   >link @ T >body H false ;
 1490: 
 1491: \ DO: ;DO                                               11may93jaw
 1492: \ changed to ?EXIT                                      10may93jaw
 1493: 
 1494: : DO:     ( -- addr [xt] [colon-sys] )
 1495:   here ghostheader
 1496:   :noname postpone gdoes> postpone ?EXIT ;
 1497: 
 1498: : by:     ( -- addr [xt] [colon-sys] ) \ name
 1499:   ghost
 1500:   :noname postpone gdoes> postpone ?EXIT ;
 1501: 
 1502: : ;DO ( addr [xt] [colon-sys] -- addr )
 1503:   postpone ;    ( S addr xt )
 1504:   over >exec ! ; immediate
 1505: 
 1506: : by      ( -- addr ) \ Name
 1507:   ghost >end @ ;
 1508: 
 1509: >TARGET
 1510: \ Variables and Constants                              05dec92py
 1511: 
 1512: Build:  ( n -- ) ;
 1513: by: :docon ( ghost -- n ) T @ H ;DO
 1514: Builder (Constant)
 1515: 
 1516: Build:  ( n -- ) T , H ;
 1517: by (Constant)
 1518: Builder Constant
 1519: 
 1520: Build:  ( n -- ) T A, H ;
 1521: by (Constant)
 1522: Builder AConstant
 1523: 
 1524: Build:  ( d -- ) T , , H ;
 1525: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
 1526: Builder 2Constant
 1527: 
 1528: BuildSmart: ;
 1529: by: :dovar ( ghost -- addr ) ;DO
 1530: Builder Create
 1531: 
 1532: T has? rom H [IF]
 1533: Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
 1534: by (Constant)
 1535: Builder Variable
 1536: [ELSE]
 1537: Build: T 0 , H ;
 1538: by Create
 1539: Builder Variable
 1540: [THEN]
 1541: 
 1542: T has? rom H [IF]
 1543: Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , 0 , H ( switchrom ) ;
 1544: by (Constant)
 1545: Builder 2Variable
 1546: [ELSE]
 1547: Build: T 0 , 0 , H ;
 1548: by Create
 1549: Builder 2Variable
 1550: [THEN]
 1551: 
 1552: T has? rom H [IF]
 1553: Build: ( -- ) T here 0 , H switchram T align here swap ! 0 , H ( switchrom ) ;
 1554: by (Constant)
 1555: Builder AVariable
 1556: [ELSE]
 1557: Build: T 0 A, H ;
 1558: by Create
 1559: Builder AVariable
 1560: [THEN]
 1561: 
 1562: \ User variables                                       04may94py
 1563: 
 1564: >CROSS
 1565: Variable tup  0 tup !
 1566: Variable tudp 0 tudp !
 1567: : u,  ( n -- udp )
 1568:   tup @ tudp @ + T  ! H
 1569:   tudp @ dup T cell+ H tudp ! ;
 1570: : au, ( n -- udp )
 1571:   tup @ tudp @ + T A! H
 1572:   tudp @ dup T cell+ H tudp ! ;
 1573: >TARGET
 1574: 
 1575: Build: T 0 u, , H ;
 1576: by: :douser ( ghost -- up-addr )  T @ H tup @ + ;DO
 1577: Builder User
 1578: 
 1579: Build: T 0 u, , 0 u, drop H ;
 1580: by User
 1581: Builder 2User
 1582: 
 1583: Build: T 0 au, , H ;
 1584: by User
 1585: Builder AUser
 1586: 
 1587: BuildSmart: T , H ;
 1588: by (Constant)
 1589: Builder Value
 1590: 
 1591: BuildSmart: T A, H ;
 1592: by (Constant)
 1593: Builder AValue
 1594: 
 1595: BuildSmart:  ( -- ) [T'] noop T A, H ;
 1596: by: :dodefer ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
 1597: Builder Defer
 1598: 
 1599: BuildSmart:  ( inter comp -- ) swap T immediate A, A, H ;
 1600: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
 1601: Builder interpret/compile:
 1602: 
 1603: \ Sturctures                                           23feb95py
 1604: 
 1605: >CROSS
 1606: : nalign ( addr1 n -- addr2 )
 1607: \ addr2 is the aligned version of addr1 wrt the alignment size n
 1608:  1- tuck +  swap invert and ;
 1609: >TARGET
 1610: 
 1611: Build: ;
 1612: by: :dofield T @ H + ;DO
 1613: Builder (Field)
 1614: 
 1615: Build: ( align1 offset1 align size "name" --  align2 offset2 )
 1616:     rot dup T , H ( align1 align size offset1 )
 1617:     + >r nalign r> ;
 1618: by (Field)
 1619: Builder Field
 1620: 
 1621: : struct  T 1 chars 0 H ;
 1622: : end-struct  T 2Constant H ;
 1623: 
 1624: : cell% ( n -- size align )
 1625:     T 1 cells H dup ;
 1626: 
 1627: \ ' 2Constant Alias2 end-struct
 1628: \ 0 1 T Chars H 2Constant struct
 1629: 
 1630: \ structural conditionals                              17dec92py
 1631: 
 1632: >CROSS
 1633: : ?struc      ( flag -- )       ABORT" CROSS: unstructured " ;
 1634: : sys?        ( sys -- sys )    dup 0= ?struc ;
 1635: : >mark       ( -- sys )        T here  ( dup ." M" hex. ) 0 , H ;
 1636: 
 1637: : branchoffset ( src dest -- ) - tchar / ;
 1638: 
 1639: : >resolve    ( sys -- )        T here ( dup ." >" hex. ) over branchoffset swap ! H ;
 1640: 
 1641: : <resolve    ( sys -- )        T here ( dup ." <" hex. ) branchoffset , H ;
 1642: 
 1643: :noname compile branch T here branchoffset , H ;
 1644:   IS branch, ( target-addr -- )
 1645: :noname compile ?branch T here branchoffset , H ;
 1646:   IS ?branch, ( target-addr -- )
 1647: :noname compile branch T here 0 , H ;
 1648:   IS branchmark, ( -- branchtoken )
 1649: :noname compile ?branch T here 0 , H ;
 1650:   IS ?branchmark, ( -- branchtoken )
 1651: :noname T here 0 , H ;
 1652:   IS ?domark, ( -- branchtoken )
 1653: :noname dup T @ H ?struc T here over branchoffset swap ! H ;
 1654:   IS branchtoresolve, ( branchtoken -- )
 1655: :noname branchto, T here H ;
 1656:   IS branchtomark, ( -- target-addr )
 1657: 
 1658: >TARGET
 1659: 
 1660: \ Structural Conditionals                              12dec92py
 1661: 
 1662: Cond: BUT       restrict? sys? swap ;Cond
 1663: Cond: YET       restrict? sys? dup ;Cond
 1664: 
 1665: 0 [IF]
 1666: >CROSS
 1667: Variable tleavings
 1668: >TARGET
 1669: 
 1670: Cond: DONE   ( addr -- )  restrict? tleavings @
 1671:       BEGIN  2dup u> 0=  WHILE  dup T @ H swap >resolve REPEAT
 1672:       tleavings ! drop ;Cond
 1673: 
 1674: >CROSS
 1675: : (leave)  T here H tleavings @ T , H  tleavings ! ;
 1676: >TARGET
 1677: 
 1678: Cond: LEAVE     restrict? compile branch (leave) ;Cond
 1679: Cond: ?LEAVE    restrict? compile 0=  compile ?branch (leave)  ;Cond
 1680: 
 1681: [ELSE]
 1682:     \ !! This is WIP
 1683:     \ The problem is (?DO)!
 1684:     \ perhaps we need a plug-in for (?DO)
 1685:     
 1686: >CROSS
 1687: Variable tleavings 0 tleavings !
 1688: : (done) ( addr -- )
 1689:     tleavings @
 1690:     BEGIN  dup
 1691:     WHILE
 1692: 	>r dup r@ cell+ @ \ address of branch
 1693: 	u> 0=	   \ lower than DO?	
 1694:     WHILE
 1695: 	r@ 2 cells + @ \ branch token
 1696: 	branchtoresolve,
 1697: 	r@ @ r> free throw
 1698:     REPEAT  r>  THEN
 1699:     tleavings ! drop ;
 1700: 
 1701: >TARGET
 1702: 
 1703: Cond: DONE   ( addr -- )  restrict? (done) ;Cond
 1704: 
 1705: >CROSS
 1706: : (leave) ( branchtoken -- )
 1707:     3 cells allocate throw >r
 1708:     T here H r@ cell+ !
 1709:     r@ 2 cells + !
 1710:     tleavings @ r@ !
 1711:     r> tleavings ! ;
 1712: >TARGET
 1713: 
 1714: Cond: LEAVE     restrict? branchmark, (leave) ;Cond
 1715: Cond: ?LEAVE    restrict? compile 0=  ?branchmark, (leave)  ;Cond
 1716: 
 1717: [THEN]
 1718: 
 1719: >CROSS
 1720: \ !!JW ToDo : Move to general tools section
 1721: 
 1722: : to1 ( x1 x2 xn n -- addr )
 1723: \G packs n stack elements in a allocated memory region
 1724:    dup dup 1+ cells allocate throw dup >r swap 1+
 1725:    0 DO tuck ! cell+ LOOP
 1726:    drop r> ;
 1727: : 1to ( addr -- x1 x2 xn )
 1728: \G unpacks the elements saved by to1
 1729:     dup @ swap over cells + swap
 1730:     0 DO  dup @ swap 1 cells -  LOOP
 1731:     free throw ;
 1732: 
 1733: : loop]     branchto, dup <resolve tcell - (done) ;
 1734: 
 1735: : skiploop] ?dup IF branchto, branchtoresolve, THEN ;
 1736: 
 1737: >TARGET
 1738: 
 1739: \ Structural Conditionals                              12dec92py
 1740: 
 1741: >TARGET
 1742: Cond: AHEAD     restrict? branchmark, ;Cond
 1743: Cond: IF        restrict? ?branchmark, ;Cond
 1744: Cond: THEN      restrict? sys? branchto, branchtoresolve, ;Cond
 1745: Cond: ELSE      restrict? sys? compile AHEAD swap compile THEN ;Cond
 1746: 
 1747: Cond: BEGIN     restrict? branchtomark, ;Cond
 1748: Cond: WHILE     restrict? sys? compile IF swap ;Cond
 1749: Cond: AGAIN     restrict? sys? branch, ;Cond
 1750: Cond: UNTIL     restrict? sys? ?branch, ;Cond
 1751: Cond: REPEAT    restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
 1752: 
 1753: Cond: CASE      restrict? 0 ;Cond
 1754: Cond: OF        restrict? 1+ >r compile over compile =
 1755:                 compile IF compile drop r> ;Cond
 1756: Cond: ENDOF     restrict? >r compile ELSE r> ;Cond
 1757: Cond: ENDCASE   restrict? compile drop 0 ?DO  compile THEN  LOOP ;Cond
 1758: 
 1759: \ Structural Conditionals                              12dec92py
 1760: 
 1761: :noname
 1762:     0 compile (do)
 1763:     branchtomark,  2 to1 ;
 1764:   IS do, ( -- target-addr )
 1765: 
 1766: \ :noname
 1767: \     compile 2dup compile = compile IF
 1768: \     compile 2drop compile ELSE
 1769: \     compile (do) branchtomark, 2 to1 ;
 1770: \   IS ?do,
 1771:     
 1772: :noname
 1773:     0 compile (?do)  ?domark, (leave)
 1774:     branchtomark,  2 to1 ;
 1775:   IS ?do, ( -- target-addr )
 1776: :noname compile (for) branchtomark, ;
 1777:   IS for, ( -- target-addr )
 1778: :noname 1to compile (loop)  loop] compile unloop skiploop] ;
 1779:   IS loop, ( target-addr -- )
 1780: :noname 1to compile (+loop)  loop] compile unloop skiploop] ;
 1781:   IS +loop, ( target-addr -- )
 1782: :noname compile (next)  loop] compile unloop ;
 1783:   IS next, ( target-addr -- )
 1784: 
 1785: Cond: DO      	restrict? do, ;Cond
 1786: Cond: ?DO     	restrict? ?do, ;Cond
 1787: Cond: FOR	restrict? for, ;Cond
 1788: 
 1789: Cond: LOOP	restrict? sys? loop, ;Cond
 1790: Cond: +LOOP	restrict? sys? +loop, ;Cond
 1791: Cond: NEXT	restrict? sys? next, ;Cond
 1792: 
 1793: \ String words                                         23feb93py
 1794: 
 1795: : ,"            [char] " parse T string, align H ;
 1796: 
 1797: Cond: ."        restrict? compile (.")     T ," H ;Cond
 1798: Cond: S"        restrict? compile (S")     T ," H ;Cond
 1799: Cond: ABORT"    restrict? compile (ABORT") T ," H ;Cond
 1800: 
 1801: Cond: IS        T ' >body H compile ALiteral compile ! ;Cond
 1802: : IS            T ' >body ! H ;
 1803: Cond: TO        T ' >body H compile ALiteral compile ! ;Cond
 1804: : TO            T ' >body ! H ;
 1805: 
 1806: Cond: defers	T ' >body @ compile, H ;Cond
 1807: : on		T -1 swap ! H ; 
 1808: : off   	T 0 swap ! H ;
 1809: 
 1810: \ LINKED ERR" ENV" 2ENV"                                18may93jaw
 1811: 
 1812: \ linked list primitive
 1813: : linked        T here over @ A, swap ! H ;
 1814: : chained	T linked A, H ;
 1815: 
 1816: : err"   s" ErrLink linked" evaluate T , H
 1817:          [char] " parse T string, align H ;
 1818: 
 1819: : env"  [char] " parse s" EnvLink linked" evaluate
 1820:         T string, align , H ;
 1821: 
 1822: : 2env" [char] " parse s" EnvLink linked" evaluate
 1823:         here >r T string, align , , H
 1824:         r> dup T c@ H 80 and swap T c! H ;
 1825: 
 1826: \ compile must be last                                 22feb93py
 1827: 
 1828: Cond: compile ( -- ) restrict? \ name
 1829:       bl word gfind dup 0= ABORT" CROSS: Can't compile"
 1830:       0> IF    gexecute
 1831:          ELSE  dup >magic @ <imm> =
 1832:                IF   gexecute
 1833:                ELSE compile (compile) addr, THEN THEN ;Cond
 1834: 
 1835: Cond: postpone ( -- ) restrict? \ name
 1836:       bl word gfind dup 0= ABORT" CROSS: Can't compile"
 1837:       0> IF    gexecute
 1838:          ELSE  dup >magic @ <imm> =
 1839:                IF   gexecute
 1840: 	       ELSE compile (compile) addr, THEN THEN ;Cond
 1841: 	   
 1842: \ \ minimal definitions
 1843: 	   
 1844: >MINIMAL
 1845: also minimal
 1846: \ Usefull words                                        13feb93py
 1847: 
 1848: : KB  400 * ;
 1849: 
 1850: \ \ [IF] [ELSE] [THEN] ...				14sep97jaw
 1851: 
 1852: \ it is useful to define our own structures and not to rely
 1853: \ on the words in the compiler
 1854: \ The words in the compiler might be defined with vocabularies
 1855: \ this doesn't work with our self-made compile-loop
 1856: 
 1857: Create parsed 20 chars allot	\ store word we parsed
 1858: 
 1859: : upcase
 1860:     parsed count bounds
 1861:     ?DO I c@ toupper I c! LOOP ;
 1862: 
 1863: : [ELSE]
 1864:     1 BEGIN
 1865: 	BEGIN bl word count dup WHILE
 1866: 	    comment? parsed place upcase parsed count
 1867: 	    2dup s" [IF]" compare 0= >r 
 1868: 	    2dup s" [IFUNDEF]" compare 0= >r
 1869: 	    2dup s" [IFDEF]" compare 0= r> or r> or
 1870: 	    IF   2drop 1+
 1871: 	    ELSE 2dup s" [ELSE]" compare 0=
 1872: 		IF   2drop 1- dup
 1873: 		    IF 1+
 1874: 		    THEN
 1875: 		ELSE
 1876: 		    2dup s" [ENDIF]" compare 0= >r
 1877: 		    s" [THEN]" compare 0= r> or
 1878: 		    IF 1- THEN
 1879: 		THEN
 1880: 	    THEN
 1881: 	    ?dup 0= ?EXIT
 1882: 	REPEAT
 1883: 	2drop refill 0=
 1884:     UNTIL drop ; immediate
 1885:   
 1886: : [THEN] ( -- ) ; immediate
 1887: 
 1888: : [ENDIF] ( -- ) ; immediate
 1889: 
 1890: : [IF] ( flag -- )
 1891:     0= IF postpone [ELSE] THEN ; immediate 
 1892: 
 1893: Cond: [IF]      postpone [IF] ;Cond
 1894: Cond: [THEN]    postpone [THEN] ;Cond
 1895: Cond: [ELSE]    postpone [ELSE] ;Cond
 1896: 
 1897: \ define new [IFDEF] and [IFUNDEF]                      20may93jaw
 1898: 
 1899: : defined? defined? ;
 1900: : needed? needed? ;
 1901: : doer? doer? ;
 1902: 
 1903: \ we want to use IFDEF on compiler directives (e.g. E?) in the source, too
 1904: 
 1905: : directive? 
 1906:   bl word count [ ' target >wordlist ] aliteral search-wordlist 
 1907:   dup IF nip THEN ;
 1908: 
 1909: : [IFDEF]  >in @ directive? swap >in !
 1910: 	   0= IF defined? ELSE name 2drop true THEN
 1911: 	   postpone [IF] ;
 1912: 
 1913: : [IFUNDEF] defined? 0= postpone [IF] ;
 1914: 
 1915: Cond: [IFDEF]   postpone [IFDEF] ;Cond
 1916: 
 1917: Cond: [IFUNDEF] postpone [IFUNDEF] ;Cond
 1918: 
 1919: \ C: \- \+ Conditional Compiling                         09jun93jaw
 1920: 
 1921: : C: >in @ defined? 0=
 1922:      IF    >in ! T : H
 1923:      ELSE drop
 1924:         BEGIN bl word dup c@
 1925:               IF   count comment? s" ;" compare 0= ?EXIT
 1926:               ELSE refill 0= ABORT" CROSS: Out of Input while C:"
 1927:               THEN
 1928:         AGAIN
 1929:      THEN ;
 1930: 
 1931: also minimal
 1932: 
 1933: \G doesn't skip line when bit is set in debugmask
 1934: : \D name evaluate debugmasksource @ and 0= IF postpone \ THEN ;
 1935: 
 1936: \G interprets the line if word is not defined
 1937: : \- defined? IF postpone \ THEN ;
 1938: 
 1939: \G interprets the line if word is defined
 1940: : \+ defined? 0= IF postpone \ THEN ;
 1941: 
 1942: Cond: \- \- ;Cond
 1943: Cond: \+ \+ ;Cond
 1944: Cond: \D \D ;Cond
 1945: 
 1946: : ?? bl word find IF execute ELSE drop 0 THEN ;
 1947: 
 1948: : needed:
 1949: \G defines ghost for words that we want to be compiled
 1950:   BEGIN >in @ bl word c@ WHILE >in ! ghost drop REPEAT drop ;
 1951: 
 1952: previous
 1953: 
 1954: \ save-cross                                           17mar93py
 1955: 
 1956: >CROSS
 1957: Create magic  s" Gforth2x" here over allot swap move
 1958: 
 1959: bigendian 1+ \ strangely, in magic big=0, little=1
 1960: tcell 1 = 0 and or
 1961: tcell 2 = 2 and or
 1962: tcell 4 = 4 and or
 1963: tcell 8 = 6 and or
 1964: magic 7 + c!
 1965: 
 1966: : save-cross ( "image-name" "binary-name" -- )
 1967:   bl parse ." Saving to " 2dup type cr
 1968:   w/o bin create-file throw >r
 1969:   TNIL IF
 1970:       s" #! "   r@ write-file throw
 1971:       bl parse  r@ write-file throw
 1972:       s"  -i"   r@ write-file throw
 1973:       #lf       r@ emit-file throw
 1974:       r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
 1975:       ?do
 1976: 	  bl over emit-file throw
 1977:       loop
 1978:       drop
 1979:       magic 8       r@ write-file throw \ write magic
 1980:   ELSE
 1981:       bl parse 2drop
 1982:   THEN
 1983:   image @ there 
 1984:   r@ write-file throw \ write image
 1985:   TNIL IF
 1986:       bit$  @ there 1- tcell>bit rshift 1+
 1987:                 r@ write-file throw \ write tags
 1988:   THEN
 1989:   r> close-file throw ;
 1990: 
 1991: : save-region ( addr len -- )
 1992:   bl parse w/o bin create-file throw >r
 1993:   swap image @ + swap r@ write-file throw
 1994:   r> close-file throw ;
 1995: 
 1996: \ words that should be in minimal
 1997: 
 1998: create s-buffer 50 chars allot
 1999: 
 2000: >MINIMAL
 2001: also minimal
 2002: 
 2003: bigendian Constant bigendian
 2004: : here there ;
 2005: 
 2006: \ compiler directives
 2007: : >ram >ram ;
 2008: : >rom >rom ;
 2009: : >auto >auto ;
 2010: : >tempdp >tempdp ;
 2011: : tempdp> tempdp> ;
 2012: : const constflag on ;
 2013: : warnings name 3 = 0= twarnings ! drop ;
 2014: : | ;
 2015: \ : | NoHeaderFlag on ; \ This is broken (damages the last word)
 2016: 
 2017: : save-cross save-cross ;
 2018: : save-region save-region ;
 2019: : tdump swap >image swap dump ;
 2020: 
 2021: also forth 
 2022: [IFDEF] Label           : Label defempty? Label ; [THEN] 
 2023: [IFDEF] start-macros    : start-macros defempty? start-macros ; [THEN]
 2024: [IFDEF] builttag	: builttag builttag ;	[THEN]
 2025: previous
 2026: 
 2027: : s" [char] " parse s-buffer place s-buffer count ; \ for environment?
 2028: : + + ;
 2029: : 1+ 1 + ;
 2030: : 2+ 2 + ;
 2031: : or or ;
 2032: : 1- 1- ;
 2033: : - - ;
 2034: : and and ;
 2035: : or or ;
 2036: : 2* 2* ;
 2037: : * * ;
 2038: : / / ;
 2039: : dup dup ;
 2040: : over over ;
 2041: : swap swap ;
 2042: : rot rot ;
 2043: : drop drop ;
 2044: : =   = ;
 2045: : 0=   0= ;
 2046: : lshift lshift ;
 2047: : 2/ 2/ ;
 2048: : . . ;
 2049: 
 2050: : all-words    ['] false    IS skip? ;
 2051: : needed-words ['] needed?  IS skip? ;
 2052: : undef-words  ['] defined? IS skip? ;
 2053: 
 2054: : \  postpone \ ;  immediate
 2055: : \G T-\G ; immediate
 2056: : (  postpone ( ;  immediate
 2057: : include bl word count included ;
 2058: : require require ;
 2059: : .( [char] ) parse type ;
 2060: : ." [char] " parse type ;
 2061: : cr cr ;
 2062: 
 2063: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
 2064: only forth also minimal definitions
 2065: 
 2066: \ cross-compiler words
 2067: 
 2068: : decimal       decimal ;
 2069: : hex           hex ;
 2070: 
 2071: : tudp          T tudp H ;
 2072: : tup           T tup H ;
 2073: 
 2074: : doc-off       false T to-doc H ! ;
 2075: : doc-on        true  T to-doc H ! ;
 2076: [IFDEF] dbg : dbg dbg ; [THEN]
 2077: 
 2078: minimal
 2079: 
 2080: \ for debugging...
 2081: : order         order ;
 2082: : hwords         words ;
 2083: : words 	also ghosts words previous ;
 2084: : .s            .s ;
 2085: : bye           bye ;
 2086: 
 2087: \ turnkey direction
 2088: : H forth ; immediate
 2089: : T minimal ; immediate
 2090: : G ghosts ; immediate
 2091: 
 2092: : turnkey  0 set-order also Target definitions
 2093:            also Minimal also ;
 2094: 
 2095: \ these ones are pefered:
 2096: 
 2097: : lock   turnkey ;
 2098: : unlock forth also cross ;
 2099: 
 2100: : [[ also unlock ;
 2101: : ]] previous previous ;
 2102: 
 2103: unlock definitions also minimal
 2104: : lock   lock ;
 2105: lock

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