Diff for /gforth/prims2x.fs between versions 1.41 and 1.60

version 1.41, 1999/04/25 21:06:52 version 1.60, 2000/12/30 15:22:52
Line 1 Line 1
 \ converts primitives to, e.g., C code   \ converts primitives to, e.g., C code 
   
 \ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.  \ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
Line 16 Line 16
   
 \ You should have received a copy of the GNU General Public License  \ You should have received a copy of the GNU General Public License
 \ along with this program; if not, write to the Free Software  \ along with this program; if not, write to the Free Software
 \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   
   
 \ This is not very nice (hard limits, no checking, assumes 1 chars = 1)  \ This is not very nice (hard limits, no checking, assumes 1 chars = 1)
Line 54  include ./extend.fs Line 54  include ./extend.fs
 include ./environ.fs  include ./environ.fs
 [THEN]  [THEN]
   
   : struct% struct ; \ struct is redefined in gray
   
 include ./gray.fs  include ./gray.fs
   
 100 constant max-effect \ number of things on one side of a stack effect  100 constant max-effect \ number of things on one side of a stack effect
Line 74  variable line \ line number of char poin Line 76  variable line \ line number of char poin
 variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?  variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
 skipsynclines on   skipsynclines on 
   
 Variable flush-comment flush-comment off  
   
 : ?flush-comment  
     flush-comment @ 0= ?EXIT  
     f-comment 2@ nip  
     IF  cr f-comment 2@ 2 /string 1-  
         dup IF  
             2dup s" -" compare 0=  
             IF  
                 flush-comment @ 1 =  
                 IF    ." #else"  
                 ELSE  ." [ELSE]"  THEN  
             ELSE  
                 flush-comment @ 1 =  
                 IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP  
                 ELSE  ." has? " type ."  [IF]"  THEN  
             THEN  cr  
         ELSE    flush-comment @ 1 = IF  ." #endif"  ELSE  ." [THEN]"  THEN  
             cr  THEN  
         0 0 f-comment 2! THEN ;  
   
 : start ( -- addr )  : start ( -- addr )
  cookedinput @ ;   cookedinput @ ;
   
Line 106  variable output \ xt ( -- ) of output wo Line 87  variable output \ xt ( -- ) of output wo
 : printprim ( -- )  : printprim ( -- )
  output @ execute ;   output @ execute ;
   
 : field  struct%
  <builds-field ( n1 n2 -- n3 )      cell% 2* field stack-pointer \ stackpointer name
  does>         ( addr1 -- addr2 )      cell% 2* field stack-cast \ cast string for assignments to stack elements
    @ + ;      cell%    field stack-in-index-xt \ ( in-size item -- in-index )
       cell%    field stack-in  \ number of stack items in effect in
 : const-field      cell%    field stack-out \ number of stack items in effect out
  <builds-field ( n1 n2 -- n3 )  end-struct stack%
  does>         ( addr -- w )  
    @ + @ ;  struct%
    cell% 2* field item-name   \ name, excluding stack prefixes
 struct   cell%    field item-stack  \ descriptor for the stack used, 0 is default
  2 cells field item-name   cell%    field item-type   \ descriptor for the item type
  cell field item-d-offset   cell%    field item-offset \ offset in stack items, 0 for the deepest element
  cell field item-f-offset  end-struct item%
  cell field item-type  
 constant item-descr  struct%
       cell% 2* field type-c-name
       cell%    field type-stack \ default stack
       cell%    field type-size  \ size of type in stack items
       cell%    field type-fetch \ xt of fetch code generator ( item -- )
       cell%    field type-store \ xt of store code generator ( item -- )
   end-struct type%
   
   : stack-in-index ( in-size item -- in-index )
       item-offset @ - 1- ;
   
   : inst-in-index ( in-size item -- in-index )
       nip dup item-offset @ swap item-type @ type-size @ + 1- ;
   
   : make-stack ( addr-ptr u1 addr-cast u2 "stack-name" -- )
       create stack% %allot >r
       save-mem r@ stack-cast 2!
       save-mem r@ stack-pointer 2! 
       ['] stack-in-index r> stack-in-index-xt ! ;
   
   s" sp" save-mem s" (Cell)" make-stack data-stack 
   s" fp" save-mem s" "       make-stack fp-stack
   s" rp" save-mem s" (Cell)" make-stack return-stack
   s" ip" save-mem s" error don't use # on results" make-stack inst-stream
   ' inst-in-index inst-stream stack-in-index-xt !
   \ !! initialize stack-in and stack-out
   
   \ stack items
   
   : init-item ( addr u addr1 -- )
       \ initialize item at addr1 with name addr u
       \ !! remove stack prefix
       dup item% %size erase
       item-name 2! ;
   
   \ various variables for storing stuff of one primitive
   
 2variable forth-name  2variable forth-name
 2variable wordset  2variable wordset
Line 130  constant item-descr Line 146  constant item-descr
 2variable c-code  2variable c-code
 2variable forth-code  2variable forth-code
 2variable stack-string  2variable stack-string
 create effect-in  max-effect item-descr * allot  create effect-in  max-effect item% %size * allot
 create effect-out max-effect item-descr * allot  create effect-out max-effect item% %size * allot
 variable effect-in-end ( pointer )  variable effect-in-end ( pointer )
 variable effect-out-end ( pointer )  variable effect-out-end ( pointer )
 2variable effect-in-size  
 2variable effect-out-size  
 variable c-line  variable c-line
 2variable c-filename  2variable c-filename
 variable name-line  variable name-line
Line 235  print-token ! Line 249  print-token !
   
 char a char z ..  char A char Z ..  union char _ singleton union  charclass letter  char a char z ..  char A char Z ..  union char _ singleton union  charclass letter
 char 0 char 9 ..                                        charclass digit  char 0 char 9 ..                                        charclass digit
 bl singleton                                            charclass blank  bl singleton tab-char over add-member                   charclass white
 tab-char singleton                                      charclass tab  
 nl-char singleton eof-char over add-member complement   charclass nonl  nl-char singleton eof-char over add-member complement   charclass nonl
 nl-char singleton eof-char over add-member char : over add-member complement  charclass nocolonnl  nl-char singleton eof-char over add-member
 bl 1+ maxchar ..                                        charclass nowhite      char : over add-member complement                   charclass nocolonnl
   bl 1+ maxchar .. char \ singleton complement intersection
                                                           charclass nowhitebq
   bl 1+ maxchar ..                                        charclass nowhite
 char " singleton eof-char over add-member complement    charclass noquote  char " singleton eof-char over add-member complement    charclass noquote
 nl-char singleton                                       charclass nl  nl-char singleton                                       charclass nl
 eof-char singleton                                      charclass eof  eof-char singleton                                      charclass eof
   
   
 (( letter (( letter || digit )) **  (( letter (( letter || digit )) **
 )) <- c-name ( -- )  )) <- c-ident ( -- )
   
   (( ` # ?? (( letter || digit || ` : )) **
   )) <- stack-ident ( -- )
   
 nowhite ++  (( nowhitebq nowhite ** ))
 <- name ( -- )  <- forth-ident ( -- )
   
 (( {{ ?flush-comment start }} ` \ nonl ** nl {{ end  Variable forth-flag
       2dup 2 min s" \+" compare 0= IF  f-comment 2!  ELSE  2drop  THEN }}  Variable c-flag
 )) <- comment ( -- )  
   (( (( ` e || ` E )) {{ start }} nonl ** 
 (( {{ effect-in }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-in-end ! }}     {{ end evaluate }}
    ` - ` - blank **  )) <- eval-comment ( ... -- ... )
    {{ effect-out }} (( {{ start }} c-name {{ end 2 pick item-name 2! item-descr + }} blank ** )) ** {{ effect-out-end ! }}  
   (( (( ` f || ` F )) {{ start }} nonl ** 
      {{ end forth-flag @ IF type cr ELSE 2drop THEN }}
   )) <- forth-comment ( -- )
   
   (( (( ` c || ` C )) {{ start }} nonl ** 
      {{ end c-flag @ IF type cr ELSE 2drop THEN }}
   )) <- c-comment ( -- )
   
   (( ` - nonl ** {{ 
           forth-flag @ IF ." [ELSE]" cr THEN
           c-flag @ IF ." #else" cr THEN }}
   )) <- else-comment
   
   (( ` + {{ start }} nonl ** {{ end
           dup
           IF      c-flag @
                   IF    ." #ifdef HAS_" bounds ?DO  I c@ toupper emit  LOOP cr
                   THEN
                   forth-flag @
                   IF  ." has? " type ."  [IF]"  cr THEN
           ELSE    2drop
               c-flag @      IF  ." #endif"  cr THEN
               forth-flag @  IF  ." [THEN]"  cr THEN
           THEN }}
   )) <- if-comment
   
   (( (( eval-comment || forth-comment || c-comment || else-comment || if-comment )) ?? nonl ** )) <- comment-body
   
   (( ` \ comment-body nl )) <- comment ( -- )
   
   (( {{ start }} stack-ident {{ end 2 pick init-item item% %size + }} white ** )) **
   <- stack-items
   
   (( {{ effect-in }}  stack-items {{ effect-in-end ! }}
      ` - ` - white **
      {{ effect-out }} stack-items {{ effect-out-end ! }}
 )) <- stack-effect ( -- )  )) <- stack-effect ( -- )
   
 (( {{ s" " doc 2! s" " forth-code 2! }}  (( {{ s" " doc 2! s" " forth-code 2! s" " wordset 2! }}
    (( comment || nl )) **  
    (( {{ line @ name-line ! filename 2@ name-filename 2! }}     (( {{ line @ name-line ! filename 2@ name-filename 2! }}
       {{ start }} name {{ end 2dup forth-name 2! c-name 2! }}  tab ++        {{ start }} forth-ident {{ end 2dup forth-name 2! c-name 2! }}  white ++
       {{ start }} stack-effect {{ end stack-string 2! }} tab ++        ` ( white ** {{ start }} stack-effect {{ end stack-string 2! }} ` ) white **
         {{ start }} name {{ end wordset 2! }} tab **          (( {{ start }} forth-ident {{ end wordset 2! }} white **
         (( {{ start }}  c-name {{ end c-name 2! }} )) ??  nl             (( {{ start }}  c-ident {{ end c-name 2! }} )) ??
           )) ??  nl
    ))     ))
    (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " nl )) ??     (( ` " ` "  {{ start }} (( noquote ++ ` " )) ++ {{ end 1- doc 2! }} ` " white ** nl )) ??
    {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nl )) ** {{ end c-code 2! skipsynclines on }}     {{ skipsynclines off line @ c-line ! filename 2@ c-filename 2! start }} (( nocolonnl nonl **  nl white ** )) ** {{ end c-code 2! skipsynclines on }}
    (( ` :  nl     (( ` :  white ** nl
       {{ start }} (( nonl ++  nl )) ++ {{ end forth-code 2! }}        {{ start }} (( nonl ++  nl white ** )) ++ {{ end forth-code 2! }}
    )) ??     )) ?? {{ printprim }}
    (( nl || eof ))     (( nl || eof ))
 )) <- primitive ( -- )  )) <- primitive ( -- )
   
 (( (( primitive {{ printprim }} )) ** eof ))  (( (( comment || primitive || nl white ** )) ** eof ))
 parser primitives2something  parser primitives2something
 warnings @ [IF]  warnings @ [IF]
 .( parser generated ok ) cr  .( parser generated ok ) cr
Line 298  warnings @ [IF] Line 353  warnings @ [IF]
   
 \ types  \ types
   
 struct  : stack-access ( n stack -- )
  2 cells field type-c-name      \ print a stack access at index n of stack
  cell const-field type-d-size      stack-pointer 2@ type
  cell const-field type-f-size      dup
  cell const-field type-fetch-handler      if
  cell const-field type-store-handler          ." [" 0 .r ." ]"
 constant type-description      else
           drop ." TOS"
 : data-stack-access ( n1 n2 n3 -- )      endif ;
 \ n1 is the offset of the accessed item, n2, n3 are effect-*-size  
  drop swap - 1- dup  
  if  
    ." sp[" 0 .r ." ]"  
  else  
    drop ." TOS"  
  endif ;  
   
 : fp-stack-access ( n1 n2 n3 -- )  : item-in-index { item -- n }
 \ n1 is the offset of the accessed item, n2, n3 are effect-*-size      \ n is the index of item (in the in-effect)
  nip swap - 1- dup      item item-stack @ dup >r stack-in @ ( in-size r:stack )
  if      item r> stack-in-index-xt @ execute ;
    ." fp[" 0 .r ." ]"  
  else  
    drop ." FTOS"  
  endif ;  
   
 : fetch-single ( item -- )  : fetch-single ( item -- )
    \ fetch a single stack item from its stack
  >r   >r
  r@ item-name 2@ type   r@ item-name 2@ type
  ."  = ("    ."  = (" 
  r@ item-type @ type-c-name 2@ type ." ) "   r@ item-type @ type-c-name 2@ type ." ) "
  r@ item-d-offset @ effect-in-size 2@ data-stack-access ." ;" cr   r@ item-in-index r@ item-stack @ stack-access
    ." ;" cr
  rdrop ;    rdrop ; 
   
 : fetch-double ( item -- )  : fetch-double ( item -- )
    \ fetch a double stack item from its stack
  >r   >r
  ." FETCH_DCELL("   ." FETCH_DCELL("
  r@ item-name 2@ type ." , "   r@ item-name 2@ type ." , "
  r@ item-d-offset @ dup    effect-in-size 2@ data-stack-access   r@ item-in-index r@ item-stack @ 2dup stack-access
  ." , "                 1+ effect-in-size 2@ data-stack-access   ." , "                      -1 under+ stack-access
  ." );" cr   ." );" cr
  rdrop ;   rdrop ;
   
 : fetch-float ( item -- )  : same-as-in? ( item -- f )
  >r   \ f is true iff the offset and stack of item is the same as on input
  r@ item-name 2@ type  
  ."  = "  
  \ ." (" r@ item-type @ type-c-name 2@ type ." ) "  
  r@ item-f-offset @ effect-in-size 2@ fp-stack-access ." ;" cr  
  rdrop ;  
   
 : d-same-as-in? ( item -- f )  
 \ f is true iff the offset of item is the same as on input  
  >r   >r
  r@ item-name 2@ items @ search-wordlist 0=   r@ item-name 2@ items @ search-wordlist 0=
  abort" bug"   abort" bug"
Line 359  constant type-description Line 398  constant type-description
  if \ item first appeared in output   if \ item first appeared in output
    drop false     drop false
  else   else
    item-d-offset @ r@ item-d-offset @ =     dup  item-stack  @ r@ item-stack  @ = 
      swap item-offset @ r@ item-offset @ = and
  endif   endif
  rdrop ;   rdrop ;
   
 : is-in-tos? ( item -- f )  : item-out-index ( item -- n )
 \ true if item has the same offset as the input TOS      \ n is the index of item (in the in-effect)
  item-d-offset @ 1+ effect-in-size 2@ drop = ;      >r r@ item-stack @ stack-out @ r> item-offset @ - 1- ;
   
 : is-out-tos? ( item -- f )  
 \ true if item has the same offset as the input TOS  
  item-d-offset @ 1+ effect-out-size 2@ drop = ;  
   
 : really-store-single ( item -- )  : really-store-single ( item -- )
  >r   >r
  r@ item-d-offset @ effect-out-size 2@ data-stack-access ."  = (Cell)"   r@ item-out-index r@ item-stack @ stack-access ."  = "
    r@ item-stack @ stack-cast 2@ type
  r@ item-name 2@ type ." ;"   r@ item-name 2@ type ." ;"
  rdrop ;   rdrop ;
   
 : store-single ( item -- )  : store-single ( item -- )
  >r   >r
  r@ d-same-as-in?   r@ same-as-in?
  if   if
    r@ is-in-tos? r@ is-out-tos? xor     r@ item-in-index 0= r@ item-out-index 0= xor
    if     if
      ." IF_TOS(" r@ really-store-single ." );" cr         ." IF_" r@ item-stack @ stack-pointer 2@ type
          ." TOS(" r@ really-store-single ." );" cr
    endif     endif
  else   else
    r@ really-store-single cr     r@ really-store-single cr
Line 394  constant type-description Line 432  constant type-description
 \ !! store optimization is not performed, because it is not yet needed  \ !! store optimization is not performed, because it is not yet needed
  >r   >r
  ." STORE_DCELL(" r@ item-name 2@ type ." , "   ." STORE_DCELL(" r@ item-name 2@ type ." , "
  r@ item-d-offset @ dup    effect-out-size 2@ data-stack-access   r@ item-out-index r@ item-stack @ 2dup stack-access
  ." , "                 1+ effect-out-size 2@ data-stack-access   ." , "                       -1 under+ stack-access
  ." );" cr   ." );" cr
  rdrop ;   rdrop ;
   
 : f-same-as-in? ( item -- f )  : single ( -- xt1 xt2 n )
 \ f is true iff the offset of item is the same as on input      ['] fetch-single ['] store-single 1 ;
  >r  
  r@ item-name 2@ items @ search-wordlist 0=  
  abort" bug"  
  execute @  
  dup r@ =  
  if \ item first appeared in output  
    drop false  
  else  
    item-f-offset @ r@ item-f-offset @ =  
  endif  
  rdrop ;  
   
 : is-in-ftos? ( item -- f )  
 \ true if item has the same offset as the input TOS  
  item-f-offset @ 1+ effect-in-size 2@ nip = ;  
   
 : really-store-float ( item -- )  
  >r  
  r@ item-f-offset @ effect-out-size 2@ fp-stack-access ."  = "  
  r@ item-name 2@ type ." ;"  
  rdrop ;  
   
 : store-float ( item -- )  
  >r  
  r@ f-same-as-in?  
  if  
    r@ is-in-ftos?  
    if  
      ." IF_FTOS(" r@ really-store-float ." );" cr  
    endif  
  else  
    r@ really-store-float cr  
  endif  
  rdrop ;  
    
 : single-type ( -- xt1 xt2 n1 n2 )  
  ['] fetch-single ['] store-single 1 0 ;  
   
 : double-type ( -- xt1 xt2 n1 n2 )  
  ['] fetch-double ['] store-double 2 0 ;  
   
 : float-type ( -- xt1 xt2 n1 n2 )  : double ( -- xt1 xt2 n )
  ['] fetch-float ['] store-float 0 1 ;      ['] fetch-double ['] store-double 2 ;
   
 : s, ( addr u -- )  : s, ( addr u -- )
 \ allocate a string  \ allocate a string
  here swap dup allot move ;   here swap dup allot move ;
   
 : starts-with ( addr u xt1 xt2 n1 n2 "prefix" -- )  wordlist constant prefixes
 \ describes a type  
 \ addr u specifies the C type name  
 \ n1 is the size of the type on the data stack  
 \ n2 is the size of the type on the FP stack  
 \ stack effect entries of the type start with prefix  
  >r >r >r >r  
  dup >r here >r s,  
  create  
  r> r> 2,  
  r> r> r> , r> , swap , , ;  
   
 wordlist constant types  
 get-current  
 types set-current  
   
 s" Bool"        single-type starts-with f  
 s" Char"        single-type starts-with c  
 s" Cell"        single-type starts-with n  
 s" Cell"        single-type starts-with w  
 s" UCell"       single-type starts-with u  
 s" DCell"       double-type starts-with d  
 s" UDCell"      double-type starts-with ud  
 s" Float"       float-type  starts-with r  
 s" Cell *"      single-type starts-with a_  
 s" Char *"      single-type starts-with c_  
 s" Float *"     single-type starts-with f_  
 s" DFloat *"    single-type starts-with df_  
 s" SFloat *"    single-type starts-with sf_  
 s" Xt"          single-type starts-with xt  
 s" WID"         single-type starts-with wid  
 s" struct F83Name *"    single-type starts-with f83name  
   
 set-current  
   
 : get-type ( addr1 u1 -- type-descr )  
 \ get the type of the name in addr1 u1  
 \ type-descr is a pointer to a type-descriptor  
  0 swap ?do  
    dup i types search-wordlist  
    if \ ok, we have the type ( addr1 xt )  
      execute nip  
      UNLOOP EXIT  
    endif  
  -1 s+loop  
  \ we did not find a type, abort  
  true abort" unknown type prefix" ;  
   
 : declare ( addr "name" -- )  : declare ( addr "name" -- )
 \ remember that there is a stack item at addr called name  \ remember that there is a stack item at addr called name
  create , ;   create , ;
   
   : !default ( w addr -- )
       dup @ if
           2drop \ leave nonzero alone
       else
           !
       endif ;
   
   : create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- )
       \ describes a type
       \ addr u specifies the C type name
       \ stack effect entries of the type start with prefix
       create type% %allot >r
       addr u save-mem r@ type-c-name 2!
       xt1   r@ type-fetch !
       xt2   r@ type-store !
       n     r@ type-size !
       stack r@ type-stack !
       rdrop ;
   
   : type-prefix ( xt1 xt2 n stack "prefix" -- )
       create-type
   does> ( item -- )
       \ initialize item
       { item typ }
       typ item item-type !
       typ type-stack @ item item-stack !default
       item item-name 2@ items @ search-wordlist 0= if \ new name
           item item-name 2@ 2dup nextname item declare
           typ type-c-name 2@ type space type  ." ;" cr
       else
           drop
       endif ;
   
   : execute-prefix ( item addr1 u1 -- )
       \ execute the word ( item -- ) associated with the longest prefix
       \ of addr1 u1
       0 swap ?do
           dup i prefixes search-wordlist
           if \ ok, we have the type ( item addr1 xt )
               nip execute
               UNLOOP EXIT
           endif
           -1 s+loop
       \ we did not find a type, abort
       true abort" unknown prefix" ;
   
 : declaration ( item -- )  : declaration ( item -- )
  dup item-name 2@ items @ search-wordlist      dup item-name 2@ execute-prefix ;
  if \ already declared ( item xt )  
    execute @ item-type @ swap item-type !  
  else ( addr )  
    dup item-name 2@ nextname dup declare ( addr )  
    dup >r item-name 2@ 2dup get-type ( addr1 u type-descr )  
    dup r> item-type ! ( addr1 u type-descr )  
    type-c-name 2@ type space type ." ;" cr  
  endif ;  
   
   : stack-prefix ( stack "prefix" -- )
       name tuck nextname create ( stack length ) 2,
   does> ( item -- )
       2@ { item stack prefix-length }
       item item-name 2@ prefix-length /string item item-name 2!
       stack item item-stack !
       item declaration ;
       
 : declaration-list ( addr1 addr2 -- )  : declaration-list ( addr1 addr2 -- )
  swap ?do   swap ?do
   i declaration    i declaration
  item-descr +loop ;   item% %size +loop ;
   
 : fetch ( addr -- )  
  dup item-type @ type-fetch-handler execute ;  
   
 : declarations ( -- )  : declarations ( -- )
  wordlist dup items ! set-current   wordlist dup items ! set-current
Line 529  set-current Line 524  set-current
 \ the leftmost (i.e. deepest) item has offset 0  \ the leftmost (i.e. deepest) item has offset 0
 \ the rightmost item has the highest offset  \ the rightmost item has the highest offset
   
 : compute-offset ( n1 n2 item -- n3 n4 )  : compute-offset { item xt -- }
 \ n1, n3 are data-stack-offsets      \ xt specifies in/out; update stack-in/out and set item-offset
 \ n2, n4 are the fp-stack-offsets      item item-type @ type-size @
  >r      item item-stack @ xt execute dup @ >r +!
  swap dup r@ item-d-offset !      r> item item-offset ! ;
  r@ item-type @ type-d-size +  
  swap dup r@ item-f-offset !  : compute-list ( addr1 addr2 xt -- )
  r@ item-type @ type-f-size +      { xt }
  rdrop ;      swap u+do
           i xt compute-offset
       item% %size +loop ;
   
 : compute-list ( addr1 addr2 -- n1 n2 )  : clear-stack { -- }
 \ n1, n2 are the final offsets      dup stack-in off stack-out off ;
  0 0 2swap swap ?do  
   i compute-offset  
  item-descr +loop ;  
   
 : compute-offsets ( -- )  : compute-offsets ( -- )
  effect-in effect-in-end @ compute-list effect-in-size 2!      data-stack clear-stack  fp-stack clear-stack return-stack clear-stack
  effect-out effect-out-end @ compute-list effect-out-size 2! ;      inst-stream clear-stack
       effect-in  effect-in-end  @ ['] stack-in  compute-list
       effect-out effect-out-end @ ['] stack-out compute-list
       inst-stream stack-out @ 0<> abort" # can only be on the input side" ;
   
   : flush-a-tos { stack -- }
       stack stack-out @ 0<> stack stack-in @ 0= and
       if
           ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
           2dup type ." [0] = " type ." TOS);" cr
       endif ;
   
 : flush-tos ( -- )  : flush-tos ( -- )
  effect-in-size 2@ effect-out-size 2@      data-stack   flush-a-tos
  0<> rot 0= and      fp-stack     flush-a-tos
  if      return-stack flush-a-tos ;
    ." IF_FTOS(fp[0] = FTOS);" cr  
  endif  : fill-a-tos { stack -- }
  0<> swap 0= and      stack stack-out @ 0= stack stack-in @ 0<> and
  if      if
    ." IF_TOS(sp[0] = TOS);" cr          ." IF_" stack stack-pointer 2@ 2dup type ." TOS("
  endif ;          2dup type ." TOS = " type ." [0]);" cr
       endif ;
   
 : fill-tos ( -- )  : fill-tos ( -- )
  effect-in-size 2@ effect-out-size 2@      \ !! inst-stream for prefetching?
  0= rot 0<> and      fp-stack     fill-a-tos
  if      data-stack   fill-a-tos
    ." IF_FTOS(FTOS = fp[0]);" cr      return-stack fill-a-tos ;
  endif  
  0= swap 0<> and  : fetch ( addr -- )
  if   dup item-type @ type-fetch @ execute ;
    ." IF_TOS(TOS = sp[0]);" cr  
  endif ;  
   
 : fetches ( -- )  : fetches ( -- )
  effect-in-end @ effect-in ?do   effect-in-end @ effect-in ?do
    i fetch     i fetch
  item-descr +loop ;    item% %size +loop ; 
   
   : stack-pointer-update { stack -- }
       \ stack grow downwards
       stack stack-in @ stack stack-out @ -
       ?dup-if \ this check is not necessary, gcc would do this for us
           stack stack-pointer 2@ type ."  += " 0 .r ." ;" cr
       endif ;
   
   : inst-pointer-update ( -- )
       inst-stream stack-in @ ?dup-if
           ." INC_IP(" 0 .r ." );" cr
       endif ;
   
 : stack-pointer-updates ( -- )  : stack-pointer-updates ( -- )
 \ we need not check if an update is a noop; gcc does this for us      inst-pointer-update
  effect-in-size 2@      data-stack   stack-pointer-update
  effect-out-size 2@      fp-stack     stack-pointer-update
  rot swap - ( d-in d-out f-diff )      return-stack stack-pointer-update ;
  rot rot - ( f-diff d-diff )  
  ?dup IF  ." sp += " 0 .r ." ;" cr  THEN  
  ?dup IF  ." fp += " 0 .r ." ;" cr  THEN ;  
   
 : store ( item -- )  : store ( item -- )
 \ f is true if the item should be stored  \ f is true if the item should be stored
 \ f is false if the store is probably not necessary  \ f is false if the store is probably not necessary
  dup item-type @ type-store-handler execute ;   dup item-type @ type-store @ execute ;
   
 : stores ( -- )  : stores ( -- )
  effect-out-end @ effect-out ?do   effect-out-end @ effect-out ?do
    i store     i store
  item-descr +loop ;    item% %size +loop ; 
   
 : .stack-list ( start end -- )  : output-c-tail ( -- )
  swap ?do      \ the final part of the generated C code
    i item-name 2@ type space      ." NEXT_P1;" cr
  item-descr +loop ;       stores
       fill-tos
       ." NEXT_P2;" cr ;
   
 : output-c ( -- ) 1 flush-comment !  : type-c ( c-addr u -- )
     ?flush-comment      \ like TYPE, but replaces "TAIL;" with tail code
  ." I_" c-name 2@ type ." :     /* " forth-name 2@ type ."  ( " stack-string 2@ type ."  ) */" cr      begin ( c-addr1 u1 )
           2dup s" TAIL;" search
       while ( c-addr1 u1 c-addr3 u3 )
           2dup 2>r drop nip over - type
           output-c-tail
           2r> 5 /string
           \ !! resync #line missing
       repeat
       2drop type ;
   
   : output-c ( -- ) 
    ." I_" c-name 2@ type ." :     /* " forth-name 2@ type ."  ( " stack-string 2@ type ." ) */" cr
  ." /* " doc 2@ type ."  */" cr   ." /* " doc 2@ type ."  */" cr
  ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging   ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr \ debugging
  ." {" cr   ." {" cr
Line 615  set-current Line 640  set-current
  stack-pointer-updates   stack-pointer-updates
  ." {" cr   ." {" cr
  ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr   ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
  c-code 2@ type   c-code 2@ type-c
  ." }" cr   ." }" cr
  ." NEXT_P1;" cr   output-c-tail
  stores  
  fill-tos  
  ." NEXT_P2;" cr  
  ." }" cr   ." }" cr
  cr   cr
 ;  ;
   
   : print-type-prefix ( type -- )
       body> >head .name ;
   
   : disasm-arg { item -- }
       item item-stack @ inst-stream = if
           ."   printarg_" item item-type @ print-type-prefix
           ." (ip[" item item-offset @ 1+ 0 .r ." ]);" cr
       endif ;
   
   : disasm-args ( -- )
    effect-in-end @ effect-in ?do
      i disasm-arg
    item% %size +loop ; 
   
   : output-disasm ( -- )
       \ generate code for disassembling VM instructions
       ." if (ip[0] == prim[" function-number @ 0 .r ." ]) {" cr
       ."   fputs(" [char] " emit forth-name 2@ type [char] " emit ." ,stdout);" cr
       ." /* " declarations ." */" cr
       compute-offsets
       disasm-args
       ."   ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
       ." } else "
       1 function-number +! ;
   
   
   
   
   : gen-arg-parm { item -- }
       item item-stack @ inst-stream = if
           ." , " item item-type @ type-c-name 2@ type space
           item item-name 2@ type
       endif ;
   
   : gen-args-parm ( -- )
    effect-in-end @ effect-in ?do
      i gen-arg-parm
    item% %size +loop ; 
   
   : gen-arg-gen { item -- }
       item item-stack @ inst-stream = if
           ."   genarg_" item item-type @ print-type-prefix
           ." (ctp, " item item-name 2@ type ." );" cr
       endif ;
   
   : gen-args-gen ( -- )
    effect-in-end @ effect-in ?do
      i gen-arg-gen
    item% %size +loop ; 
   
   : output-gen ( -- )
       \ generate C code for generating VM instructions
       ." /* " declarations ." */" cr
       compute-offsets
       ." void gen_" c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
       ." {" cr
       ."   gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
       gen-args-gen
       ." }" cr
       1 function-number +! ;
   
   : stack-used? { stack -- f }
       stack stack-in @ stack stack-out @ or 0<> ;
   
 : output-funclabel ( -- )  : output-funclabel ( -- )
   1 function-number +!    1 function-number +!
   ." &I_" c-name 2@ type ." ," cr ;    ." &I_" c-name 2@ type ." ," cr ;
Line 634  set-current Line 720  set-current
   '" emit forth-name 2@ type '" emit ." ," cr ;    '" emit forth-name 2@ type '" emit ." ," cr ;
   
 : output-c-func ( -- )  : output-c-func ( -- )
   \ used for word libraries
     1 function-number +!      1 function-number +!
     ." void I_" c-name 2@ type ." ()      /* " forth-name 2@ type      ." Cell * I_" c-name 2@ type ." (Cell *SP, Cell **FP)      /* " forth-name 2@ type
     ."  ( " stack-string 2@ type ."  ) */" cr      ."  ( " stack-string 2@ type ."  ) */" cr
     ." /* " doc 2@ type ."  */" cr      ." /* " doc 2@ type ."  */" cr
     ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr      ." NAME(" [char] " emit forth-name 2@ type [char] " emit ." )" cr
     \ debugging      \ debugging
     ." {" cr      ." {" cr
     ." DEF_CA" cr  
     declarations      declarations
     compute-offsets \ for everything else      compute-offsets \ for everything else
     ." NEXT_P0;" cr      inst-stream  stack-used? IF ." Cell *ip=IP;" cr THEN
       data-stack   stack-used? IF ." Cell *sp=SP;" cr THEN
       fp-stack     stack-used? IF ." Cell *fp=*FP;" cr THEN
       return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
     flush-tos      flush-tos
     fetches      fetches
     stack-pointer-updates      stack-pointer-updates
       fp-stack   stack-used? IF ." *FP=fp;" cr THEN
     ." {" cr      ." {" cr
     ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr      ." #line " c-line @ . [char] " emit c-filename 2@ type [char] " emit cr
     c-code 2@ type      c-code 2@ type
     ." }" cr      ." }" cr
     ." NEXT_P1;" cr  
     stores      stores
     fill-tos      fill-tos
     ." NEXT_P2;" cr      ." return (sp);" cr
     ." }" cr      ." }" cr
     cr ;      cr ;
   
 : output-label ( -- )  1 flush-comment !  : output-label ( -- )  
     ?flush-comment  
     ." (Label)&&I_" c-name 2@ type ." ," cr      ." (Label)&&I_" c-name 2@ type ." ," cr
     -1 primitive-number +! ;      -1 primitive-number +! ;
   
 : output-alias ( -- )  flush-comment on  : output-alias ( -- ) 
     ?flush-comment  
     ( primitive-number @ . ." alias " ) ." Primitive " forth-name 2@ type cr      ( primitive-number @ . ." alias " ) ." Primitive " forth-name 2@ type cr
     -1 primitive-number +! ;      -1 primitive-number +! ;
   
 : output-forth ( -- )  flush-comment on  : output-forth ( -- )  
     ?flush-comment  
     forth-code @ 0=      forth-code @ 0=
     IF          \ output-alias      IF          \ output-alias
         \ this is bad for ec: an alias is compiled if tho word does not exist!          \ this is bad for ec: an alias is compiled if tho word does not exist!
         \ JAW          \ JAW
     ELSE  ." : " forth-name 2@ type ."   ( "      ELSE  ." : " forth-name 2@ type ."   ( "
         effect-in effect-in-end @ .stack-list ." -- "          stack-string 2@ type ." )" cr
         effect-out effect-out-end @ .stack-list ." )" cr  
         forth-code 2@ type cr          forth-code 2@ type cr
         -1 primitive-number +!          -1 primitive-number +!
     THEN ;      THEN ;

Removed from v.1.41  
changed lines
  Added in v.1.60


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