[gforth] / gforth / prims2x.fs  

gforth: gforth/prims2x.fs

Diff for /gforth/prims2x.fs between version 1.7 and 1.8

version 1.7, Thu Sep 8 17:20:12 1994 UTC version 1.8, Mon Sep 12 19:00:36 1994 UTC
Line 15 
Line 15 
 \ 5) Words that call NEXT themselves have to be done very carefully.  \ 5) Words that call NEXT themselves have to be done very carefully.
 \  \
 \ To do:  \ To do:
   \ add the store optimization for doubles
 \ regarding problem 1 above: It would be better (for over) to implement  \ regarding problem 1 above: It would be better (for over) to implement
 \       the alternative  \       the alternative
   
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   begin ( c-addr file-id )    begin ( c-addr file-id )
     2dup batch-size swap read-file      2dup batch-size swap read-file
     if      if
       abort" I/O error"        true abort" I/O error"
     endif      endif
     ( c-addr file-id actual-size ) rot over + -rot      ( c-addr file-id actual-size ) rot over + -rot
     batch-size <>      batch-size <>
Line 240 
Line 241 
   
 : fetch-single ( item -- )  : fetch-single ( item -- )
  >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-d-offset @ effect-in-size 2@ data-stack-access ." ;" cr
  rdrop ;   rdrop ;
   
 : fetch-double ( item -- )  : fetch-double ( item -- )
  >r   >r
  ." {Double_Store _d; _d.cells.low = "   r@ item-name 2@ type
    ." = ({Double_Store _d; _d.cells.low = "
  r@ item-d-offset @ dup    effect-in-size 2@ data-stack-access   r@ item-d-offset @ dup    effect-in-size 2@ data-stack-access
  ." ; _d.cells.high = " 1+ effect-in-size 2@ data-stack-access ." ; "   ." ; _d.cells.high = " 1+ effect-in-size 2@ data-stack-access
  r@ item-name 2@ type ."  = _d.dcell;}" cr   ." ; _d.dcell;});" cr
  rdrop ;   rdrop ;
   
 : fetch-float ( item -- )  : fetch-float ( item -- )
  >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-f-offset @ effect-in-size 2@ fp-stack-access ." ;" cr   r@ item-f-offset @ effect-in-size 2@ fp-stack-access ." ;" cr
  rdrop ;   rdrop ;
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 \ f is true iff the offset of item is the same as on input  \ 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=
  if   abort" bug"
    ." bug" cr abort  
  endif  
  execute @   execute @
  dup r@ =   dup r@ =
  if \ item first appeared in output   if \ item first appeared in output
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 \ f is true iff the offset of item is the same as on input  \ 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=
  if   abort" bug"
    ." bug" cr abort  
  endif  
  execute @   execute @
  dup r@ =   dup r@ =
  if \ item first appeared in output   if \ item first appeared in output
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      execute nip       execute nip
      UNLOOP EXIT       UNLOOP EXIT
    endif     endif
  -1 s+loop   -1 +loop
  \ we did not find a type, abort   \ we did not find a type, abort
  ." unknown type prefix" cr 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
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   i declaration    i declaration
  item-descr +loop ;   item-descr +loop ;
   
   : fetch ( addr -- )
    dup item-type @ type-fetch-handler execute ;
   
 : declarations ( -- )  : declarations ( -- )
  wordlist dup items ! set-current   wordlist dup items ! set-current
  effect-in effect-in-end @ declaration-list   effect-in effect-in-end @ declaration-list
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    ." IF_TOS(TOS = sp[0]);" cr     ." IF_TOS(TOS = sp[0]);" cr
  endif ;   endif ;
   
 : fetch ( addr -- )  
  dup item-type @ type-fetch-handler execute ;  
   
 : fetches ( -- )  : fetches ( -- )
  effect-in-end @ effect-in ?do   effect-in-end @ effect-in ?do
    i fetch     i fetch
  item-descr +loop ;   item-descr +loop ;
   
 : stack-pointer-updates ( -- )  : stack-pointer-updates ( -- )
 \ we do not check if an update is a noop; gcc does this for us  \ we need not check if an update is a noop; gcc does this for us
  effect-in-size 2@   effect-in-size 2@
  effect-out-size 2@   effect-out-size 2@
  rot swap - ( d-in d-out f-diff )   rot swap - ( d-in d-out f-diff )
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    i store     i store
  item-descr +loop ;   item-descr +loop ;
   
   : .stack-list ( start end -- )
    swap ?do
      i item-name 2@ type space
    item-descr +loop ;
   
 : output-c ( -- )  : output-c ( -- )
  ." I_" c-name 2@ type ." :     /* " forth-name 2@ type ."  ( " stack-string 2@ type ."  ) */" cr   ." I_" c-name 2@ type ." :     /* " forth-name 2@ type ."  ( " stack-string 2@ type ."  ) */" cr
  ." /* " doc 2@ type ."  */" cr   ." /* " doc 2@ type ."  */" cr
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  ." NEXT_P1;" cr   ." NEXT_P1;" cr
  stores   stores
  fill-tos   fill-tos
  ." NEXT_P2;" cr   ." NEXT1_P2;" cr
  ." }" cr   ." }" cr
  cr   cr
 ;  ;
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  primitive-number @ . ." alias " forth-name 2@ type cr   primitive-number @ . ." alias " forth-name 2@ type cr
  -1 primitive-number +! ;   -1 primitive-number +! ;
   
   : output-forth ( -- )
    forth-code @ 0=
    IF    output-alias
    ELSE  ." : " forth-name 2@ type ."   ( "
          effect-in effect-in-end @ .stack-list ." -- "
          effect-out effect-out-end @ .stack-list ." )" cr
          forth-code 2@ type cr
          -1 primitive-number +!
    THEN
   ;
   
 : process-file ( addr u xt -- )  : process-file ( addr u xt -- )
  >r r/o open-file   >r r/o open-file abort" cannot open file"
  if  
    ." cannot open file" cr abort  
  endif  
  warnings @ if   warnings @ if
  ." ------------ CUT HERE -------------" cr  endif   ." ------------ CUT HERE -------------" cr  endif
  r> primfilter ;   r> primfilter ;


Generate output suitable for use with a patch program
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  Added in v.1.8

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