[gforth] / gforth / libcc.fs  

gforth: gforth/libcc.fs

Diff for /gforth/libcc.fs between version 1.9 and 1.10

version 1.9, Fri Feb 23 22:33:21 2007 UTC version 1.10, Mon Apr 9 10:26:35 2007 UTC
Line 76 
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 \ data structures  \ data structures
   
 \ c-function word body:  \ For every c-function, we have three words: two anonymous words
 \  cell function pointer  \ created by c-function-ft (first time) and c-function-rt (run-time),
   \ and a named deferred word.  The deferred word first points to the
   \ first-time word, then to the run-time word; the run-time word calls
   \ the c function.
   
   \ c-function-ft word body:
   \  cell xt of c-function-rt word
   \  cell xt of c-function deferred word
 \  char return type index  \  char return type index
 \  char parameter count n  \  char parameter count n
 \  char*n parameters (type indices)  \  char*n parameters (type indices)
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 : const+ ( n1 "name" -- n2 )  : const+ ( n1 "name" -- n2 )
     dup constant 1+ ;      dup constant 1+ ;
   
   : front-string { c-addr1 u1 c-addr2 u2 -- c-addr3 u3 }
       \ insert string c-addr2 u2 in buffer c-addr1 u1; c-addr3 u3 is the
       \ remainder of the buffer.
       assert( u1 u2 u>= )
       c-addr2 c-addr1 u2 move
       c-addr1 u1 u2 /string ;
   
   : front-char { c-addr1 u1 c -- c-addr3 u2 }
       \ insert c in buffer c-addr1 u1; c-addr3 u3 is the remainder of
       \ the buffer.
       assert( u1 0 u> )
       c c-addr1 c!
       c-addr1 u1 1 /string ;
   
 \ linked list stuff (should go elsewhere)  \ linked list stuff (should go elsewhere)
   
 hex  hex
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 : gen-wrapped-stmt ( pars c-name fp-change1 sp-change1 ret -- fp-change sp-change )  : gen-wrapped-stmt ( pars c-name fp-change1 sp-change1 ret -- fp-change sp-change )
     cells gen-wrapped-types + @ execute ;      cells gen-wrapped-types + @ execute ;
   
   : wrapper-function-name ( addr -- c-addr u )
       \ addr points to the return type index of a c-function descriptor
       count { r-type } count { d: pars }
       pars + count { d: c-name }
       s" gforth_c_" { d: prefix }
       prefix nip c-name nip + pars nip + 3 + { u }
       u allocate throw { c-addr }
       c-addr u
       prefix front-string c-name front-string '_ front-char
       pars bounds u+do
           i c@ type-letter front-char
       loop
       '_ front-char r-type type-letter front-char assert( dup 0= )
       2drop c-addr u ;
   
 : gen-wrapper-function ( addr -- )  : gen-wrapper-function ( addr -- )
     \ addr points to the return type index of a c-function descriptor      \ addr points to the return type index of a c-function descriptor
       dup { descriptor }
     c@+ { ret } count 2dup { d: pars } chars + count { d: c-name }      c@+ { ret } count 2dup { d: pars } chars + count { d: c-name }
     print-c-prefix-lines      print-c-prefix-lines
     ." void gforth_c_" c-name type ." _"      ." void " descriptor wrapper-function-name 2dup type drop free throw
     pars bounds u+do      .\" (void)\n"
         i c@ type-letter emit  
     loop  
     ." _" ret type-letter emit .\" (void)\n"  
     .\" {\n  Cell MAYBE_UNUSED *sp = gforth_SP;\n  Float MAYBE_UNUSED *fp = gforth_FP;\n  "      .\" {\n  Cell MAYBE_UNUSED *sp = gforth_SP;\n  Float MAYBE_UNUSED *fp = gforth_FP;\n  "
     pars c-name 2over count-stacks ret gen-wrapped-stmt .\" ;\n"      pars c-name 2over count-stacks ret gen-wrapped-stmt .\" ;\n"
     ?dup-if      ?dup-if
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 \    s" ar rcs xxx.a xxx.o" system  \    s" ar rcs xxx.a xxx.o" system
 \    $? abort" ar generated error" ;  \    $? abort" ar generated error" ;
   
 : link-wrapper-function ( -- sym )  : link-wrapper-function ( addr -- sym )
       wrapper-function-name { d: wrapper-name }
     s" /home/anton/gforth/xxx.so.1" open-lib ( lib-handle )      s" /home/anton/gforth/xxx.so.1" open-lib ( lib-handle )
     s" gforth_c_strlen_a_n" rot lib-sym dup 0= -&32 and throw ;      wrapper-name rot lib-sym dup 0= -&32 and throw
       wrapper-name drop free throw ;
   
 : c-function-ft ( xt-defer xt-cfr "c-name" "{libcc-type}" "--" "libcc-type" -- )  : c-function-ft ( xt-defer xt-cfr "c-name" "{libcc-type}" "--" "libcc-type" -- )
     \ build time/first time action for c-function      \ build time/first time action for c-function
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     ['] gen-wrapper-function r@ outfile-execute      ['] gen-wrapper-function r@ outfile-execute
     r> close-file throw      r> close-file throw
   does> ( ... -- ... )    does> ( ... -- ... )
     2@ { xt-defer xt-cfr }      dup 2@ { xt-defer xt-cfr }
     compile-wrapper-function      compile-wrapper-function
     link-wrapper-function xt-cfr >body !      2 cells + link-wrapper-function xt-cfr >body !
     xt-cfr xt-defer defer!      xt-cfr xt-defer defer!
     xt-cfr execute ;      xt-cfr execute ;
   

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  Added in v.1.10
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