[gforth] / gforth / libffi.fs  

gforth: gforth/libffi.fs

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

version 1.7, Sun Dec 11 19:31:48 2005 UTC version 1.8, Sun Dec 11 20:08:09 2005 UTC
Line 104 
Line 104 
 \ "forward" when revarg is on  \ "forward" when revarg is on
   
 \ : >c+  ( char buf -- buf' )  tuck   c!    cell+ cell+ ;  \ : >c+  ( char buf -- buf' )  tuck   c!    cell+ cell+ ;
 : >i+  ( n buf -- buf' )     tuck    !    cell+ cell+ ;  : >i+  ( n buf -- buf' )     tuck   l!    cell+ cell+ ;
 : >p+  ( addr buf -- buf' )  tuck    !    cell+ cell+ ;  : >p+  ( addr buf -- buf' )  tuck    !    cell+ cell+ ;
 : >d+  ( d buf -- buf' )     dup >r ffi-2! r> cell+ cell+ ;  : >d+  ( d buf -- buf' )     dup >r ffi-2! r> cell+ cell+ ;
 : >sf+ ( r buf -- buf' )     dup   sf!    cell+ cell+ ;  : >sf+ ( r buf -- buf' )     dup   sf!    cell+ cell+ ;
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     revarg @ IF  drop 0  ELSE  2* cells  THEN  argbuf +      revarg @ IF  drop 0  ELSE  2* cells  THEN  argbuf +
     postpone Literal ;      postpone Literal ;
   
   Variable ind-call  ind-call off
   : ind:  ind-call on  Create  here thisproc !
       0 , 0 , 0 , 0 also c-decl  DOES>  cell+ dup cell+ cell+ >r ! ;
   
 : ffi-call, ( -- lit-cif )  : ffi-call, ( -- lit-cif )
     postpone drop postpone argptr postpone retbuf      postpone drop postpone argptr postpone retbuf
     thisproc @ cell+ postpone literal postpone @      thisproc @ cell+ postpone literal postpone @
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 : rettype ( endxt n "name" -- )  : rettype ( endxt n "name" -- )
     Create 2,      Create 2,
   DOES>  2@ args @ decl, symbol, previous revarg off args off ;    DOES>  2@ args @ decl, ind-call @ 0= IF  symbol,  THEN
       previous revarg off args off ind-call off ;
   
 also c-decl definitions  also c-decl definitions
   
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 Variable rtype  Variable rtype
   
 : alloc-callback ( -- addr )  : alloc-callback ( ip -- addr )
     rtype @ create-cif      rtype @ make-cif here 1 ffi-size allot
     cif@ 1- tuck + c@ ffi-type here dup >r 1 ffi-size allot      dup >r ffi-prep-closure throw r> ;
     ffi-prep-closure throw r> ;  
   
 : callback ( -- )  : callback ( -- )
     Create  0 ] postpone >r also cb-decl cifreset      Create  0 ] postpone >r also cb-decl cifreset
   DOES>    DOES>
     Create here >r 0 , callbacks @ A, r@ callbacks !      0 Value  -1 cells allot
       here >r 0 , callbacks @ A, r@ callbacks !
     swap postpone Literal postpone call , postpone EXIT      swap postpone Literal postpone call , postpone EXIT
     r> dup cell+ cell+ alloc-callback swap !      r@ cell+ cell+ alloc-callback r> ! ;
   DOES> @ ;  
   
 : callback; ( 0 arg1 .. argn -- )  : callback; ( 0 arg1 .. argn -- )
     BEGIN  over  WHILE  compile,  REPEAT      BEGIN  over  WHILE  compile,  REPEAT

Generate output suitable for use with a patch program
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Removed from v.1.7  
changed lines
  Added in v.1.8
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