File:  [gforth] / gforth / prims2x.fs
Revision 1.61: download - view: text, annotated - select for diffs
Thu Jan 4 15:35:08 2001 UTC (18 years, 8 months ago) by anton
Branches: MAIN
CVS tags: HEAD
minor improvements

    1: \ converts primitives to, e.g., C code 
    2: 
    3: \ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
    4: 
    5: \ This file is part of Gforth.
    6: 
    7: \ Gforth is free software; you can redistribute it and/or
    8: \ modify it under the terms of the GNU General Public License
    9: \ as published by the Free Software Foundation; either version 2
   10: \ of the License, or (at your option) any later version.
   11: 
   12: \ This program is distributed in the hope that it will be useful,
   13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
   14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15: \ GNU General Public License for more details.
   16: 
   17: \ You should have received a copy of the GNU General Public License
   18: \ along with this program; if not, write to the Free Software
   19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   20: 
   21: 
   22: \ This is not very nice (hard limits, no checking, assumes 1 chars = 1)
   23: 
   24: \ Optimizations:
   25: \ superfluous stores are removed. GCC removes the superfluous loads by itself
   26: \ TOS and FTOS can be kept in register( variable)s.
   27: \ 
   28: \ Problems:
   29: \ The TOS optimization is somewhat hairy. The problems by example:
   30: \ 1) dup ( w -- w w ): w=TOS; sp-=1; sp[1]=w; TOS=w;
   31: \    The store is not superfluous although the earlier opt. would think so
   32: \    Alternatively:    sp[0]=TOS; w=TOS; sp-=1; TOS=w;
   33: \ 2) ( -- .. ): sp[0] = TOS; ... /* This additional store is necessary */
   34: \ 3) ( .. -- ): ... TOS = sp[0]; /* as well as this load */
   35: \ 4) ( -- ): /* but here they are unnecessary */
   36: \ 5) Words that call NEXT themselves have to be done very carefully.
   37: \
   38: \ To do:
   39: \ add the store optimization for doubles
   40: \ regarding problem 1 above: It would be better (for over) to implement
   41: \ 	the alternative
   42: 
   43: warnings off
   44: 
   45: [IFUNDEF] vocabulary	\ we are executed just with kernel image
   46: 			\ load the rest that is needed
   47: 			\ (require fails because this file is needed from a
   48: 			\ different directory with the wordlibraries)
   49: include ./search.fs			
   50: include ./extend.fs
   51: [THEN]
   52: 
   53: [IFUNDEF] environment?
   54: include ./environ.fs
   55: [THEN]
   56: 
   57: : struct% struct ; \ struct is redefined in gray
   58: 
   59: include ./gray.fs
   60: 
   61: 100 constant max-effect \ number of things on one side of a stack effect
   62: 255 constant maxchar
   63: maxchar 1+ constant eof-char
   64: #tab constant tab-char
   65: #lf constant nl-char
   66: 
   67: variable rawinput \ pointer to next character to be scanned
   68: variable endrawinput \ pointer to the end of the input (the char after the last)
   69: variable cookedinput \ pointer to the next char to be parsed
   70: variable line \ line number of char pointed to by input
   71: 1 line !
   72: 2variable filename \ filename of original input file
   73: 0 0 filename 2!
   74: 2variable f-comment
   75: 0 0 f-comment 2!
   76: variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
   77: skipsynclines on 
   78: 
   79: : start ( -- addr )
   80:  cookedinput @ ;
   81: 
   82: : end ( addr -- addr u )
   83:  cookedinput @ over - ;
   84: 
   85: variable output \ xt ( -- ) of output word
   86: 
   87: : printprim ( -- )
   88:  output @ execute ;
   89: 
   90: struct%
   91:     cell% 2* field stack-pointer \ stackpointer name
   92:     cell% 2* field stack-cast \ cast string for assignments to stack elements
   93:     cell%    field stack-in-index-xt \ ( in-size item -- in-index )
   94:     cell%    field stack-in  \ number of stack items in effect in
   95:     cell%    field stack-out \ number of stack items in effect out
   96: end-struct stack%
   97: 
   98: struct%
   99:  cell% 2* field item-name   \ name, excluding stack prefixes
  100:  cell%    field item-stack  \ descriptor for the stack used, 0 is default
  101:  cell%    field item-type   \ descriptor for the item type
  102:  cell%    field item-offset \ offset in stack items, 0 for the deepest element
  103: end-struct item%
  104: 
  105: struct%
  106:     cell% 2* field type-c-name
  107:     cell%    field type-stack \ default stack
  108:     cell%    field type-size  \ size of type in stack items
  109:     cell%    field type-fetch \ xt of fetch code generator ( item -- )
  110:     cell%    field type-store \ xt of store code generator ( item -- )
  111: end-struct type%
  112: 
  113: : stack-in-index ( in-size item -- in-index )
  114:     item-offset @ - 1- ;
  115: 
  116: : inst-in-index ( in-size item -- in-index )
  117:     nip dup item-offset @ swap item-type @ type-size @ + 1- ;
  118: 
  119: : make-stack ( addr-ptr u1 addr-cast u2 "stack-name" -- )
  120:     create stack% %allot >r
  121:     save-mem r@ stack-cast 2!
  122:     save-mem r@ stack-pointer 2! 
  123:     ['] stack-in-index r> stack-in-index-xt ! ;
  124: 
  125: s" sp" save-mem s" (Cell)" make-stack data-stack 
  126: s" fp" save-mem s" "       make-stack fp-stack
  127: s" rp" save-mem s" (Cell)" make-stack return-stack
  128: s" ip" save-mem s" error don't use # on results" make-stack inst-stream
  129: ' inst-in-index inst-stream stack-in-index-xt !
  130: \ !! initialize stack-in and stack-out
  131: 
  132: \ stack items
  133: 
  134: : init-item ( addr u addr1 -- )
  135:     \ initialize item at addr1 with name addr u
  136:     \ !! remove stack prefix
  137:     dup item% %size erase
  138:     item-name 2! ;
  139: 
  140: \ various variables for storing stuff of one primitive
  141: 
  142: 2variable forth-name
  143: 2variable wordset
  144: 2variable c-name
  145: 2variable doc
  146: 2variable c-code
  147: 2variable forth-code
  148: 2variable stack-string
  149: create effect-in  max-effect item% %size * allot
  150: create effect-out max-effect item% %size * allot
  151: variable effect-in-end ( pointer )
  152: variable effect-out-end ( pointer )
  153: variable c-line
  154: 2variable c-filename
  155: variable name-line
  156: 2variable name-filename
  157: 2variable last-name-filename
  158: 
  159: variable primitive-number -10 primitive-number !
  160: Variable function-number 0 function-number !
  161: 
  162: \ for several reasons stack items of a word are stored in a wordlist
  163: \ since neither forget nor marker are implemented yet, we make a new
  164: \ wordlist for every word and store it in the variable items
  165: variable items
  166: 
  167: \ a few more set ops
  168: 
  169: : bit-equivalent ( w1 w2 -- w3 )
  170:  xor invert ;
  171: 
  172: : complement ( set1 -- set2 )
  173:  empty ['] bit-equivalent binary-set-operation ;
  174: 
  175: \ the parser
  176: 
  177: eof-char max-member \ the whole character set + EOF
  178: 
  179: : getinput ( -- n )
  180:  rawinput @ endrawinput @ =
  181:  if
  182:    eof-char
  183:  else
  184:    cookedinput @ c@
  185:  endif ;
  186: 
  187: :noname ( n -- )
  188:  dup bl > if
  189:   emit space
  190:  else
  191:   .
  192:  endif ;
  193: print-token !
  194: 
  195: : testchar? ( set -- f )
  196:  getinput member? ;
  197: ' testchar? test-vector !
  198: 
  199: : checksyncline ( -- )
  200:     \ when input points to a newline, check if the next line is a
  201:     \ sync line.  If it is, perform the appropriate actions.
  202:     rawinput @ >r
  203:     s" #line " r@ over compare 0<> if
  204: 	rdrop 1 line +! EXIT
  205:     endif
  206:     0. r> 6 chars + 20 >number drop >r drop line ! r> ( c-addr )
  207:     dup c@ bl = if
  208: 	char+ dup c@ [char] " <> abort" sync line syntax"
  209: 	char+ dup 100 [char] " scan drop swap 2dup - save-mem filename 2!
  210: 	char+
  211:     endif
  212:     dup c@ nl-char <> abort" sync line syntax"
  213:     skipsynclines @ if
  214: 	dup char+ rawinput !
  215: 	rawinput @ c@ cookedinput @ c!
  216:     endif
  217:     drop ;
  218: 
  219: : ?nextchar ( f -- )
  220:     ?not? if
  221: 	filename 2@ type ." :" line @ 0 .r ." : syntax error, wrong char:"
  222: 	getinput . cr
  223: 	rawinput @ endrawinput @ over - 100 min type cr
  224: 	abort
  225:     endif
  226:     rawinput @ endrawinput @ <> if
  227: 	rawinput @ c@
  228: 	1 chars rawinput +!
  229: 	1 chars cookedinput +!
  230: 	nl-char = if
  231: 	    checksyncline
  232: 	endif
  233: 	rawinput @ c@ cookedinput @ c!
  234:     endif ;
  235: 
  236: : charclass ( set "name" -- )
  237:  ['] ?nextchar terminal ;
  238: 
  239: : .. ( c1 c2 -- set )
  240:  ( creates a set that includes the characters c, c1<=c<=c2 )
  241:  empty copy-set
  242:  swap 1+ rot do
  243:   i over add-member
  244:  loop ;
  245: 
  246: : ` ( -- terminal ) ( use: ` c )
  247:  ( creates anonymous terminal for the character c )
  248:  char singleton ['] ?nextchar make-terminal ;
  249: 
  250: char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
  251: char 0 char 9 ..					charclass digit
  252: bl singleton tab-char over add-member			charclass white
  253: nl-char singleton eof-char over add-member complement	charclass nonl
  254: nl-char singleton eof-char over add-member
  255:     char : over add-member complement                   charclass nocolonnl
  256: bl 1+ maxchar .. char \ singleton complement intersection
  257:                                                         charclass nowhitebq
  258: bl 1+ maxchar ..                                        charclass nowhite
  259: char " singleton eof-char over add-member complement	charclass noquote
  260: nl-char singleton					charclass nl
  261: eof-char singleton					charclass eof
  262: 
  263: 
  264: (( letter (( letter || digit )) **
  265: )) <- c-ident ( -- )
  266: 
  267: (( ` # ?? (( letter || digit || ` : )) **
  268: )) <- stack-ident ( -- )
  269: 
  270: (( nowhitebq nowhite ** ))
  271: <- forth-ident ( -- )
  272: 
  273: Variable forth-flag
  274: Variable c-flag
  275: 
  276: (( (( ` e || ` E )) {{ start }} nonl ** 
  277:    {{ end evaluate }}
  278: )) <- eval-comment ( ... -- ... )
  279: 
  280: (( (( ` f || ` F )) {{ start }} nonl ** 
  281:    {{ end forth-flag @ IF type cr ELSE 2drop THEN }}
  282: )) <- forth-comment ( -- )
  283: 
  284: (( (( ` c || ` C )) {{ start }} nonl ** 
  285:    {{ end c-flag @ IF type cr ELSE 2drop THEN }}
  286: )) <- c-comment ( -- )
  287: 
  288: (( ` - nonl ** {{ 
  289: 	forth-flag @ IF ." [ELSE]" cr THEN
  290: 	c-flag @ IF ." #else" cr THEN }}
  291: )) <- else-comment
  292: 
  293: (( ` + {{ start }} nonl ** {{ end
  294: 	dup
  295: 	IF	c-flag @
  296: 		IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP cr
  297: 		THEN
  298: 		forth-flag @
  299: 		IF  ." has? " type ."  [IF]"  cr THEN
  300: 	ELSE	2drop
  301: 	    c-flag @      IF  ." #endif"  cr THEN
  302: 	    forth-flag @  IF  ." [THEN]"  cr THEN
  303: 	THEN }}
  304: )) <- if-comment
  305: 
  306: (( (( eval-comment || forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body
  307: 
  308: (( ` \ comment-body nl )) <- comment ( -- )
  309: 
  310: (( {{ start }} stack-ident {{ end 2 pick init-item item% %size + }} white ** )) **
  311: <- stack-items
  312: 
  313: (( {{ effect-in }}  stack-items {{ effect-in-end ! }}
  314:    ` - ` - white **
  315:    {{ effect-out }} stack-items {{ effect-out-end ! }}
  316: )) <- stack-effect ( -- )
  317: 
  318: (( {{ s" " doc 2! s" " forth-code 2! s" " wordset 2! }}
  319:    (( {{ line @ name-line ! filename 2@ name-filename 2! }}
  320:       {{ start }} forth-ident {{ end 2dup forth-name 2! c-name 2! }}  white ++
  321:       ` ( white ** {{ start }} stack-effect {{ end stack-string 2! }} ` ) white **
  322:         (( {{ start }} forth-ident {{ end wordset 2! }} white **
  323: 	   (( {{ start }}  c-ident {{ end c-name 2! }} )) ??
  324: 	)) ??  nl
  325:    ))
  326:    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " white ** nl )) ??
  327:    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nl white ** )) ** {{ end c-code 2! skipsynclines on }}
  328:    (( ` :  white ** nl
  329:       {{ start }} (( nonl ++  nl white ** )) ++ {{ end forth-code 2! }}
  330:    )) ?? {{ printprim }}
  331:    (( nl || eof ))
  332: )) <- primitive ( -- )
  333: 
  334: (( (( comment || primitive || nl white ** )) ** eof ))
  335: parser primitives2something
  336: warnings @ [IF]
  337: .( parser generated ok ) cr
  338: [THEN]
  339: 
  340: : primfilter ( file-id xt -- )
  341: \ fileid is for the input file, xt ( -- ) is for the output word
  342:  output !
  343:  here dup rawinput ! cookedinput !
  344:  here unused rot read-file throw
  345:  dup here + endrawinput !
  346:  allot
  347:  align
  348:  checksyncline
  349: \ begin
  350: \     getinput dup eof-char = ?EXIT emit true ?nextchar
  351: \ again ;
  352:  primitives2something ;
  353: 
  354: \ types
  355: 
  356: : stack-access ( n stack -- )
  357:     \ print a stack access at index n of stack
  358:     stack-pointer 2@ type
  359:     dup
  360:     if
  361: 	." [" 0 .r ." ]"
  362:     else
  363: 	drop ." TOS"
  364:     endif ;
  365: 
  366: : item-in-index { item -- n }
  367:     \ n is the index of item (in the in-effect)
  368:     item item-stack @ dup >r stack-in @ ( in-size r:stack )
  369:     item r> stack-in-index-xt @ execute ;
  370: 
  371: : fetch-single ( item -- )
  372:  \ fetch a single stack item from its stack
  373:  >r
  374:  r@ item-name 2@ type
  375:  ."  = (" 
  376:  r@ item-type @ type-c-name 2@ type ." ) "
  377:  r@ item-in-index r@ item-stack @ stack-access
  378:  ." ;" cr
  379:  rdrop ; 
  380: 
  381: : fetch-double ( item -- )
  382:  \ fetch a double stack item from its stack
  383:  >r
  384:  ." FETCH_DCELL("
  385:  r@ item-name 2@ type ." , "
  386:  r@ item-in-index r@ item-stack @ 2dup ." (Cell)" stack-access
  387:  ." , "                      -1 under+ ." (Cell)" stack-access
  388:  ." );" cr
  389:  rdrop ;
  390: 
  391: : same-as-in? ( item -- f )
  392:  \ f is true iff the offset and stack of item is the same as on input
  393:  >r
  394:  r@ item-name 2@ items @ search-wordlist 0=
  395:  abort" bug"
  396:  execute @
  397:  dup r@ =
  398:  if \ item first appeared in output
  399:    drop false
  400:  else
  401:    dup  item-stack  @ r@ item-stack  @ = 
  402:    swap item-offset @ r@ item-offset @ = and
  403:  endif
  404:  rdrop ;
  405: 
  406: : item-out-index ( item -- n )
  407:     \ n is the index of item (in the in-effect)
  408:     >r r@ item-stack @ stack-out @ r> item-offset @ - 1- ;
  409: 
  410: : really-store-single ( item -- )
  411:  >r
  412:  r@ item-out-index r@ item-stack @ stack-access ."  = "
  413:  r@ item-stack @ stack-cast 2@ type
  414:  r@ item-name 2@ type ." ;"
  415:  rdrop ;
  416: 
  417: : store-single ( item -- )
  418:  >r
  419:  r@ same-as-in?
  420:  if
  421:    r@ item-in-index 0= r@ item-out-index 0= xor
  422:    if
  423:        ." IF_" r@ item-stack @ stack-pointer 2@ type
  424:        ." TOS(" r@ really-store-single ." );" cr
  425:    endif
  426:  else
  427:    r@ really-store-single cr
  428:  endif
  429:  rdrop ;
  430: 
  431: : store-double ( item -- )
  432: \ !! store optimization is not performed, because it is not yet needed
  433:  >r
  434:  ." STORE_DCELL(" r@ item-name 2@ type ." , "
  435:  r@ item-out-index r@ item-stack @ 2dup stack-access
  436:  ." , "                       -1 under+ stack-access
  437:  ." );" cr
  438:  rdrop ;
  439: 
  440: : single ( -- xt1 xt2 n )
  441:     ['] fetch-single ['] store-single 1 ;
  442: 
  443: : double ( -- xt1 xt2 n )
  444:     ['] fetch-double ['] store-double 2 ;
  445: 
  446: : s, ( addr u -- )
  447: \ allocate a string
  448:  here swap dup allot move ;
  449: 
  450: wordlist constant prefixes
  451: 
  452: : declare ( addr "name" -- )
  453: \ remember that there is a stack item at addr called name
  454:  create , ;
  455: 
  456: : !default ( w addr -- )
  457:     dup @ if
  458: 	2drop \ leave nonzero alone
  459:     else
  460: 	!
  461:     endif ;
  462: 
  463: : create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- )
  464:     \ describes a type
  465:     \ addr u specifies the C type name
  466:     \ stack effect entries of the type start with prefix
  467:     create type% %allot >r
  468:     addr u save-mem r@ type-c-name 2!
  469:     xt1   r@ type-fetch !
  470:     xt2   r@ type-store !
  471:     n     r@ type-size !
  472:     stack r@ type-stack !
  473:     rdrop ;
  474: 
  475: : type-prefix ( xt1 xt2 n stack "prefix" -- )
  476:     create-type
  477: does> ( item -- )
  478:     \ initialize item
  479:     { item typ }
  480:     typ item item-type !
  481:     typ type-stack @ item item-stack !default
  482:     item item-name 2@ items @ search-wordlist 0= if \ new name
  483: 	item item-name 2@ 2dup nextname item declare
  484: 	typ type-c-name 2@ type space type  ." ;" cr
  485:     else
  486: 	drop
  487:     endif ;
  488: 
  489: : execute-prefix ( item addr1 u1 -- )
  490:     \ execute the word ( item -- ) associated with the longest prefix
  491:     \ of addr1 u1
  492:     0 swap ?do
  493: 	dup i prefixes search-wordlist
  494: 	if \ ok, we have the type ( item addr1 xt )
  495: 	    nip execute
  496: 	    UNLOOP EXIT
  497: 	endif
  498: 	-1 s+loop
  499:     \ we did not find a type, abort
  500:     true abort" unknown prefix" ;
  501: 
  502: : declaration ( item -- )
  503:     dup item-name 2@ execute-prefix ;
  504: 
  505: : stack-prefix ( stack "prefix" -- )
  506:     name tuck nextname create ( stack length ) 2,
  507: does> ( item -- )
  508:     2@ { item stack prefix-length }
  509:     item item-name 2@ prefix-length /string item item-name 2!
  510:     stack item item-stack !
  511:     item declaration ;
  512:     
  513: : declaration-list ( addr1 addr2 -- )
  514:  swap ?do
  515:   i declaration
  516:  item% %size +loop ;
  517: 
  518: : declarations ( -- )
  519:  wordlist dup items ! set-current
  520:  effect-in effect-in-end @ declaration-list
  521:  effect-out effect-out-end @ declaration-list ;
  522: 
  523: \ offset computation
  524: \ the leftmost (i.e. deepest) item has offset 0
  525: \ the rightmost item has the highest offset
  526: 
  527: : compute-offset { item xt -- }
  528:     \ xt specifies in/out; update stack-in/out and set item-offset
  529:     item item-type @ type-size @
  530:     item item-stack @ xt execute dup @ >r +!
  531:     r> item item-offset ! ;
  532: 
  533: : compute-list ( addr1 addr2 xt -- )
  534:     { xt }
  535:     swap u+do
  536: 	i xt compute-offset
  537:     item% %size +loop ;
  538: 
  539: : clear-stack { -- }
  540:     dup stack-in off stack-out off ;
  541: 
  542: : compute-offsets ( -- )
  543:     data-stack clear-stack  fp-stack clear-stack return-stack clear-stack
  544:     inst-stream clear-stack
  545:     effect-in  effect-in-end  @ ['] stack-in  compute-list
  546:     effect-out effect-out-end @ ['] stack-out compute-list
  547:     inst-stream stack-out @ 0<> abort" # can only be on the input side" ;
  548: 
  549: : flush-a-tos { stack -- }
  550:     stack stack-out @ 0<> stack stack-in @ 0= and
  551:     if
  552: 	." IF_" stack stack-pointer 2@ 2dup type ." TOS("
  553: 	2dup type ." [0] = " type ." TOS);" cr
  554:     endif ;
  555: 
  556: : flush-tos ( -- )
  557:     data-stack   flush-a-tos
  558:     fp-stack     flush-a-tos
  559:     return-stack flush-a-tos ;
  560: 
  561: : fill-a-tos { stack -- }
  562:     stack stack-out @ 0= stack stack-in @ 0<> and
  563:     if
  564: 	." IF_" stack stack-pointer 2@ 2dup type ." TOS("
  565: 	2dup type ." TOS = " type ." [0]);" cr
  566:     endif ;
  567: 
  568: : fill-tos ( -- )
  569:     \ !! inst-stream for prefetching?
  570:     fp-stack     fill-a-tos
  571:     data-stack   fill-a-tos
  572:     return-stack fill-a-tos ;
  573: 
  574: : fetch ( addr -- )
  575:  dup item-type @ type-fetch @ execute ;
  576: 
  577: : fetches ( -- )
  578:  effect-in-end @ effect-in ?do
  579:    i fetch
  580:  item% %size +loop ; 
  581: 
  582: : stack-pointer-update { stack -- }
  583:     \ stack grow downwards
  584:     stack stack-in @ stack stack-out @ -
  585:     ?dup-if \ this check is not necessary, gcc would do this for us
  586: 	stack stack-pointer 2@ type ."  += " 0 .r ." ;" cr
  587:     endif ;
  588: 
  589: : inst-pointer-update ( -- )
  590:     inst-stream stack-in @ ?dup-if
  591: 	." INC_IP(" 0 .r ." );" cr
  592:     endif ;
  593: 
  594: : stack-pointer-updates ( -- )
  595:     inst-pointer-update
  596:     data-stack   stack-pointer-update
  597:     fp-stack     stack-pointer-update
  598:     return-stack stack-pointer-update ;
  599: 
  600: : store ( item -- )
  601: \ f is true if the item should be stored
  602: \ f is false if the store is probably not necessary
  603:  dup item-type @ type-store @ execute ;
  604: 
  605: : stores ( -- )
  606:  effect-out-end @ effect-out ?do
  607:    i store
  608:  item% %size +loop ; 
  609: 
  610: : output-c-tail ( -- )
  611:     \ the final part of the generated C code
  612:     ." NEXT_P1;" cr
  613:     stores
  614:     fill-tos
  615:     ." NEXT_P2;" cr ;
  616: 
  617: : type-c ( c-addr u -- )
  618:     \ like TYPE, but replaces "TAIL;" with tail code
  619:     begin ( c-addr1 u1 )
  620: 	2dup s" TAIL;" search
  621:     while ( c-addr1 u1 c-addr3 u3 )
  622: 	2dup 2>r drop nip over - type
  623: 	output-c-tail
  624: 	2r> 5 /string
  625: 	\ !! resync #line missing
  626:     repeat
  627:     2drop type ;
  628: 
  629: : output-c ( -- ) 
  630:  ." I_" c-name 2@ type ." :	/* " forth-name 2@ type ."  ( " stack-string 2@ type ." ) */" cr
  631:  ." /* " doc 2@ type ."  */" cr
  632:  ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging
  633:  ." {" cr
  634:  ." DEF_CA" cr
  635:  declarations
  636:  compute-offsets \ for everything else
  637:  ." NEXT_P0;" cr
  638:  flush-tos
  639:  fetches
  640:  stack-pointer-updates
  641:  ." {" cr
  642:  ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
  643:  c-code 2@ type-c
  644:  ." }" cr
  645:  output-c-tail
  646:  ." }" cr
  647:  cr
  648: ;
  649: 
  650: : print-type-prefix ( type -- )
  651:     body> >head .name ;
  652: 
  653: : disasm-arg { item -- }
  654:     item item-stack @ inst-stream = if
  655: 	."   printarg_" item item-type @ print-type-prefix
  656: 	." (ip[" item item-offset @ 1+ 0 .r ." ]);" cr
  657:     endif ;
  658: 
  659: : disasm-args ( -- )
  660:  effect-in-end @ effect-in ?do
  661:    i disasm-arg
  662:  item% %size +loop ; 
  663: 
  664: : output-disasm ( -- )
  665:     \ generate code for disassembling VM instructions
  666:     ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr
  667:     ."   fputs(" [char] " emit forth-name 2@ type [char] " emit ." ,stdout);" cr
  668:     ." /* " declarations ." */" cr
  669:     compute-offsets
  670:     disasm-args
  671:     ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
  672:     ." } else "
  673:     1 function-number +! ;
  674: 
  675: 
  676: 
  677: 
  678: : gen-arg-parm { item -- }
  679:     item item-stack @ inst-stream = if
  680: 	." , " item item-type @ type-c-name 2@ type space
  681: 	item item-name 2@ type
  682:     endif ;
  683: 
  684: : gen-args-parm ( -- )
  685:  effect-in-end @ effect-in ?do
  686:    i gen-arg-parm
  687:  item% %size +loop ; 
  688: 
  689: : gen-arg-gen { item -- }
  690:     item item-stack @ inst-stream = if
  691: 	."   genarg_" item item-type @ print-type-prefix
  692:         ." (ctp, " item item-name 2@ type ." );" cr
  693:     endif ;
  694: 
  695: : gen-args-gen ( -- )
  696:  effect-in-end @ effect-in ?do
  697:    i gen-arg-gen
  698:  item% %size +loop ; 
  699: 
  700: : output-gen ( -- )
  701:     \ generate C code for generating VM instructions
  702:     ." /* " declarations ." */" cr
  703:     compute-offsets
  704:     ." void gen_" c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
  705:     ." {" cr
  706:     ."   gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
  707:     gen-args-gen
  708:     ." }" cr
  709:     1 function-number +! ;
  710: 
  711: : stack-used? { stack -- f }
  712:     stack stack-in @ stack stack-out @ or 0<> ;
  713: 
  714: : output-funclabel ( -- )
  715:   1 function-number +!
  716:   ." &I_" c-name 2@ type ." ," cr ;
  717: 
  718: : output-forthname ( -- )
  719:   1 function-number +!
  720:   '" emit forth-name 2@ type '" emit ." ," cr ;
  721: 
  722: : output-c-func ( -- )
  723: \ used for word libraries
  724:     1 function-number +!
  725:     ." Cell * I_" c-name 2@ type ." (Cell *SP, Cell **FP)      /* " forth-name 2@ type
  726:     ."  ( " stack-string 2@ type ."  ) */" cr
  727:     ." /* " doc 2@ type ."  */" cr
  728:     ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr
  729:     \ debugging
  730:     ." {" cr
  731:     declarations
  732:     compute-offsets \ for everything else
  733:     inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN
  734:     data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN
  735:     fp-stack     stack-used? IF ." Cell *fp=*FP;" cr THEN
  736:     return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
  737:     flush-tos
  738:     fetches
  739:     stack-pointer-updates
  740:     fp-stack   stack-used? IF ." *FP=fp;" cr THEN
  741:     ." {" cr
  742:     ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
  743:     c-code 2@ type
  744:     ." }" cr
  745:     stores
  746:     fill-tos
  747:     ." return (sp);" cr
  748:     ." }" cr
  749:     cr ;
  750: 
  751: : output-label ( -- )  
  752:     ." (Label)&&I_" c-name 2@ type ." ," cr
  753:     -1 primitive-number +! ;
  754: 
  755: : output-alias ( -- ) 
  756:     ( primitive-number @ . ." alias " ) ." Primitive " forth-name 2@ type cr
  757:     -1 primitive-number +! ;
  758: 
  759: : output-forth ( -- )  
  760:     forth-code @ 0=
  761:     IF    	\ output-alias
  762: 	\ this is bad for ec: an alias is compiled if tho word does not exist!
  763: 	\ JAW
  764:     ELSE  ." : " forth-name 2@ type ."   ( "
  765: 	stack-string 2@ type ." )" cr
  766: 	forth-code 2@ type cr
  767: 	-1 primitive-number +!
  768:     THEN ;
  769: 
  770: : output-tag-file ( -- )
  771:     name-filename 2@ last-name-filename 2@ compare if
  772: 	name-filename 2@ last-name-filename 2!
  773: 	#ff emit cr
  774: 	name-filename 2@ type
  775: 	." ,0" cr
  776:     endif ;
  777: 
  778: : output-tag ( -- )
  779:     output-tag-file
  780:     forth-name 2@ 1+ type
  781:     127 emit
  782:     space forth-name 2@ type space
  783:     1 emit
  784:     name-line @ 0 .r
  785:     ." ,0" cr ;
  786: 
  787: [IFDEF] documentation
  788: : register-doc ( -- )
  789:     get-current documentation set-current
  790:     forth-name 2@ nextname create
  791:     forth-name 2@ 2,
  792:     stack-string 2@ condition-stack-effect 2,
  793:     wordset 2@ 2,
  794:     c-name 2@ condition-pronounciation 2,
  795:     doc 2@ 2,
  796:     set-current ;
  797: [THEN]
  798: 
  799: : process-file ( addr u xt -- )
  800:     >r
  801:     save-mem 2dup filename 2!
  802:     0 function-number !
  803:     r/o open-file abort" cannot open file"
  804:     warnings @ if
  805: 	." ------------ CUT HERE -------------" cr  endif
  806:     r> primfilter ;
  807: 
  808: : process      ( xt -- )
  809:     bl word count rot
  810:     process-file ;

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>