Diff for /gforth/libffi.fs between versions 1.2 and 1.30

version 1.2, 2005/11/20 23:15:42 version 1.30, 2008/09/18 02:42:24
Line 1 Line 1
 \ libffi.fs     shared library support package          14aug05py  \ libffi.fs     shared library support package          14aug05py
   
 \ Copyright (C) 1995,1996,1997,1998,2000,2003,2005 Free Software Foundation, Inc.  \ Copyright (C) 1995,1996,1997,1998,2000,2003,2005,2006,2007,2008 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
 \ Gforth is free software; you can redistribute it and/or  \ Gforth is free software; you can redistribute it and/or
 \ modify it under the terms of the GNU General Public License  \ modify it under the terms of the GNU General Public License
 \ as published by the Free Software Foundation; either version 2  \ as published by the Free Software Foundation, either version 3
 \ of the License, or (at your option) any later version.  \ of the License, or (at your option) any later version.
   
 \ This program is distributed in the hope that it will be useful,  \ This program is distributed in the hope that it will be useful,
Line 15 Line 15
 \ GNU General Public License for more details.  \ GNU General Public License for more details.
   
 \ 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, see http://www.gnu.org/licenses/.
 \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.  
   \ replacements for former primitives
   \ note that the API functions have their arguments reversed and other
   \ deviations.
   
   c-library libffi
   s" ffi" add-lib
   
   \ The ffi.h of XCode needs the following line, and it should not hurt elsewhere
   \c #define MACOSX
   include-ffi.h-string save-c-prefix-line \ #include <ffi.h>
   \c #include <stdio.h>
   \c static void **gforth_clist;
   \c static void *gforth_ritem;
   \c #ifndef HAS_BACKLINK
   \c static void **saved_gforth_pointers;
   \c #endif
   \c typedef void *Label;
   \c typedef Label *Xt;
   \c static void gforth_callback_ffi(ffi_cif * cif, void * resp, void ** args, void * ip)
   \c {
   \c #ifndef HAS_BACKLINK
   \c   void **gforth_pointers = saved_gforth_pointers;
   \c #endif
   \c   {
   \c     Cell *rp1 = gforth_RP;
   \c     Cell *sp = gforth_SP;
   \c     Float *fp = gforth_FP;
   \c     unsigned char *lp = gforth_LP;
   \c     void ** clist = gforth_clist;
   \c     void * ritem = gforth_ritem;
   \c
   \c     gforth_clist = args;
   \c     gforth_ritem = resp;
   \c
   \c     gforth_engine((Xt *)ip, sp, rp1, fp, lp, gforth_UP);
   \c 
   \c     /* restore global variables */
   \c     gforth_RP = rp1;
   \c     gforth_SP = sp;
   \c     gforth_FP = fp;
   \c     gforth_LP = lp;
   \c     gforth_clist = clist;
   \c     gforth_ritem = ritem;
   \c   }
   \c }
   
   \c static void* ffi_types[] =
   \c     { &ffi_type_void,
   \c       &ffi_type_uint8, &ffi_type_sint8,
   \c       &ffi_type_uint16, &ffi_type_sint16,
   \c       &ffi_type_uint32, &ffi_type_sint32,
   \c       &ffi_type_uint64, &ffi_type_sint64,
   \c       &ffi_type_float, &ffi_type_double, &ffi_type_longdouble,
   \c       &ffi_type_pointer };
   \c #define ffi_type(n) (ffi_types[n])
   c-function ffi-type ffi_type n -- a
   
   \c static int ffi_sizes[] = { sizeof(ffi_cif), sizeof(ffi_closure) };
   \c #define ffi_size(n1) (ffi_sizes[n1])
   c-function ffi-size ffi_size n -- n
   
   \c #define ffi_prep_cif1(atypes, n, rtype, cif) \
   \c           ffi_prep_cif((ffi_cif *)cif, FFI_DEFAULT_ABI, n, \
   \c                        (ffi_type *)rtype, (ffi_type **)atypes)
   c-function ffi-prep-cif ffi_prep_cif1 a n a a -- n
   
   \c #ifdef HAS_BACKLINK
   \c #define ffi_call1(a_avalues, a_rvalue ,a_ip ,a_cif) \
   \c             ffi_call((ffi_cif *)a_cif, (void(*)())a_ip, \
   \c                      (void *)a_rvalue, (void **)a_avalues)
   \c #else
   \c #define ffi_call1(a_avalues, a_rvalue ,a_ip ,a_cif) \
   \c             (saved_gforth_pointers = gforth_pointers), \
   \c             ffi_call((ffi_cif *)a_cif, (void(*)())a_ip, \
   \c                      (void *)a_rvalue, (void **)a_avalues)
   \c #endif
   c-function ffi-call ffi_call1 a a a a -- void
   
   \c #define ffi_prep_closure1(a_ip, a_cif, a_closure) \
   \c              ffi_prep_closure((ffi_closure *)a_closure, (ffi_cif *)a_cif, gforth_callback_ffi, (void *)a_ip)
   c-function ffi-prep-closure ffi_prep_closure1 a a a -- n
   
   \ !! use ud?
   \c #define ffi_2fetch(a_addr) (*(long long *)a_addr)
   c-function ffi-2@ ffi_2fetch a -- d
   
   \c #define ffi_2store(d,a_addr) ((*(long long *)a_addr) = (long long)d)
   c-function ffi-2! ffi_2store d a -- void
   
   \c #define ffi_arg_int() (*(int *)(*gforth_clist++))
   c-function ffi-arg-int ffi_arg_int -- n
   
   \c #define ffi_arg_long() (*(long *)(*gforth_clist++))
   c-function ffi-arg-long ffi_arg_long -- n
   
   \c #define ffi_arg_longlong() (*(long long *)(*gforth_clist++))
   c-function ffi-arg-longlong ffi_arg_longlong -- d
   
   \ !! correct?  The primitive is different, but looks funny
   c-function ffi-arg-dlong ffi_arg_long -- d
   
   \c #define ffi_arg_ptr() (*(char **)(*gforth_clist++))
   c-function ffi-arg-ptr ffi_arg_ptr -- a
   
   \c #define ffi_arg_float() (*(float *)(*gforth_clist++))
   c-function ffi-arg-float ffi_arg_float -- r
   
   \c #define ffi_arg_double() (*(double *)(*gforth_clist++))
   c-function ffi-arg-double ffi_arg_double -- r
   
   : ffi-ret-void ( -- )
       0 (bye) ;
   
   \c #define ffi_ret_int1(w) (*(int*)(gforth_ritem) = w)
   c-function ffi-ret-int1 ffi_ret_int1 n -- void
   : ffi-ret-int ( w -- ) ffi-ret-int1 ffi-ret-void ;
   
   \c #define ffi_ret_longlong1(d) (*(long long *)(gforth_ritem) = d)
   c-function ffi-ret-longlong1 ffi_ret_longlong1 d -- void
   : ffi-ret-longlong ( d -- ) ffi-ret-longlong1 ffi-ret-void ;
   
   \c #define ffi_ret_dlong1(d) (*(long *)(gforth_ritem) = d)
   c-function ffi-ret-dlong1 ffi_ret_dlong1 d -- void
   : ffi-ret-dlong ( d -- ) ffi-ret-dlong1 ffi-ret-void ;
   
   c-function ffi-ret-long1 ffi_ret_dlong1 n -- void
   : ffi-ret-long ( n -- ) ffi-ret-long1 ffi-ret-void ;
   
   \c #define ffi_ret_ptr1(w) (*(char **)(gforth_ritem) = w)
   c-function ffi-ret-ptr1 ffi_ret_ptr1 a -- void
   : ffi-ret-ptr ( a -- ) ffi-ret-ptr1 ffi-ret-void ;
   
   \c #define ffi_ret_float1(r) (*(float *)(gforth_ritem) = r)
   c-function ffi-ret-float1 ffi_ret_float1 r -- void
   : ffi-ret-float ( r -- ) ffi-ret-float1 ffi-ret-void ;
   
   \c #define ffi_ret_double1(r) (*(double *)(gforth_ritem) = r)
   c-function ffi-ret-double1 ffi_ret_double1 r -- void
   : ffi-ret-double ( r -- ) ffi-ret-double1 ffi-ret-void ;
   end-c-library
   
 \ common stuff, same as fflib.fs  \ common stuff, same as fflib.fs
   
Line 104  Create argptr maxargs 0 [DO]  argbuf [I] Line 244  Create argptr maxargs 0 [DO]  argbuf [I]
 \ "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+ ;
   : >dl+ ( d buf -- buf' )     nip dup >r  ! r> cell+ cell+ ;
 : >sf+ ( r buf -- buf' )     dup   sf!    cell+ cell+ ;  : >sf+ ( r buf -- buf' )     dup   sf!    cell+ cell+ ;
 : >df+ ( r buf -- buf' )     dup   df!    cell+ cell+ ;  : >df+ ( r buf -- buf' )     dup   df!    cell+ cell+ ;
   
 \ "backward" when revarg is off  \ "backward" when revarg is off
   
 : >i-  ( n buf -- buf' )     2 cells - tuck   ffi-i! ;  : >i-  ( n buf -- buf' )     2 cells - tuck   l! ;
 : >p-  ( addr buf -- buf' )  2 cells - tuck    ! ;  : >p-  ( addr buf -- buf' )  2 cells - tuck    ! ;
 : >d-  ( d buf -- buf' )     2 cells - dup >r ffi-2! r> ;  : >d-  ( d buf -- buf' )     2 cells - dup >r ffi-2! r> ;
   : >dl- ( d buf -- buf' )     2 cells - nip dup >r ! r> ;
 : >sf- ( r buf -- buf' )     2 cells - dup   sf! ;  : >sf- ( r buf -- buf' )     2 cells - dup   sf! ;
 : >df- ( r buf -- buf' )     2 cells - dup   df! ;  : >df- ( r buf -- buf' )     2 cells - dup   df! ;
   
 \ return value  \ return value
   
 : i>x   ( -- n )  retbuf ffi-i@ ;  : i>x   ( -- n )  retbuf l@ ;
   : is>x   ( -- n )  retbuf sl@ ;
 : p>x   ( -- addr ) retbuf @ ;  : p>x   ( -- addr ) retbuf @ ;
   : dl>x   ( -- d ) retbuf @ s>d ;
 : d>x   ( -- d )  retbuf ffi-2@ ;  : d>x   ( -- d )  retbuf ffi-2@ ;
 : sf>x  ( -- r )  retbuf sf@ ;  : sf>x  ( -- r )  retbuf sf@ ;
 : df>x  ( -- r )  retbuf df@ ;  : df>x  ( -- r )  retbuf df@ ;
Line 147  Variable args args off Line 291  Variable args args off
     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
   : fptr  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 @
Line 159  Variable args args off Line 307  Variable args args off
 : cif@ ( -- addr u )  : cif@ ( -- addr u )
     cifbuf cell+ cifbuf @ over - ;      cifbuf cell+ cifbuf @ over - ;
   
 : make-cif ( rtype -- addr ) cif,  : create-cif ( rtype -- addr ) cif,
     cif@ cifs search-wordlist      cif@ cifs search-wordlist
     IF  execute  EXIT  THEN      IF  execute  EXIT  THEN
     get-current >r cifs set-current      get-current >r cifs set-current
     cif@ nextname Create  here >r      cif@ nextname Create  here >r
     cif@ 1- bounds ?DO  I c@ ffi-type ,  LOOP      cif@ 1- bounds ?DO  I c@ ffi-type ,  LOOP  r>
     r> cif@ 1- tuck + c@ ffi-type here dup >r 0 ffi-size allot      r> set-current ;
     ffi-prep-cif throw  
     r> r> set-current ;  : make-cif ( rtype -- addr )  create-cif
       cif@ 1- tuck + c@ ffi-type here 0 ffi-size allot
       dup >r ffi-prep-cif throw r> ;
   
 : decl, ( 0 arg1 .. argn call rtype start -- )  : decl, ( 0 arg1 .. argn call rtype start -- )
     start, { retxt rtype } cifreset      start, { retxt rtype } cifreset
Line 184  Variable args args off Line 334  Variable args args off
   
 : 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 ;
   
   6 1 cells 4 > 2* - Constant _long
   
 also c-decl definitions  also c-decl definitions
   
 : <rev>  revarg on ;  : <rev>  revarg on ;
   
 ' >i+  ' >i-    6 argtype int  ' >i+  ' >i-    6 argtype int
   ' >p+  ' >p-    _long argtype long
 ' >p+  ' >p-  &12 argtype ptr  ' >p+  ' >p-  &12 argtype ptr
 ' >d+  ' >d-    8 argtype llong  ' >d+  ' >d-    8 argtype llong
   ' >dl+ ' >dl-   6 argtype dlong
 ' >sf+ ' >sf-   9 argtype sf  ' >sf+ ' >sf-   9 argtype sf
 ' >df+ ' >df- &10 argtype df  ' >df+ ' >df- &10 argtype df
   : ints 0 ?DO int LOOP ;
   
 ' noop   0 rettype (void)  ' noop   0 rettype (void)
 ' i>x    6 rettype (int)  ' is>x   6 rettype (int)
   ' i>x    5 rettype (uint)
   ' p>x    _long rettype (long)
 ' p>x  &12 rettype (ptr)  ' p>x  &12 rettype (ptr)
 ' d>x    8 rettype (llong)  ' d>x    8 rettype (llong)
   ' dl>x   6 rettype (dlong)
 ' sf>x   9 rettype (sf)  ' sf>x   9 rettype (sf)
 ' df>x &10 rettype (fp)  ' df>x &10 rettype (fp)
   
   : (addr) thisproc @ cell+ postpone Literal postpone @ postpone EXIT
       drop symbol, previous revarg off args off ;
   
 previous definitions  previous definitions
   
 \ legacy support for old library interfaces  \ legacy support for old library interfaces
Line 231  Variable callbacks Line 393  Variable callbacks
   
 Variable rtype  Variable rtype
   
 : alloc-callback ( -- addr )  : alloc-callback ( ip -- addr )
     rtype @ cif,      rtype @ make-cif here 1 ffi-size allot
     here >r      dup >r ffi-prep-closure throw r> ;
     cif@ 1- bounds ?DO  I c@ ffi-type ,  LOOP  
     r> cif@ 1- tuck + c@ ffi-type here dup >r 1 ffi-size allot  
     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> @ ;  
   
   \ !! is the stack effect right?  or is it ( 0 ret arg1 .. argn -- ) ?
 : callback; ( 0 arg1 .. argn -- )  : callback; ( 0 arg1 .. argn -- )
     BEGIN  over  WHILE  compile,  REPEAT      BEGIN  over  WHILE  compile,  REPEAT
     postpone r> postpone execute compile, drop      postpone r> postpone execute compile, drop
       \ !! should we put ]] 0 (bye) [[ here?
       \ !! is the EXIT ever executed?
     postpone EXIT postpone [ previous ; immediate      postpone EXIT postpone [ previous ; immediate
   
 : rettype' ( xt n -- )  : rettype' ( xt n -- )
Line 272  also cb-decl definitions Line 434  also cb-decl definitions
 ' ffi-arg-int        6 argtype' int  ' ffi-arg-int        6 argtype' int
 ' ffi-arg-float      9 argtype' sf  ' ffi-arg-float      9 argtype' sf
 ' ffi-arg-double   &10 argtype' df  ' ffi-arg-double   &10 argtype' df
   ' ffi-arg-long       _long argtype' long
 ' ffi-arg-longlong   8 argtype' llong  ' ffi-arg-longlong   8 argtype' llong
   ' ffi-arg-dlong      6 argtype' dlong
 ' ffi-arg-ptr      &12 argtype' ptr  ' ffi-arg-ptr      &12 argtype' ptr
   : ints ( n -- ) 0 ?DO postpone int LOOP ; immediate
   
 ' ffi-ret-void       0 rettype' (void)  ' ffi-ret-void       0 rettype' (void)
 ' ffi-ret-int        6 rettype' (int)  ' ffi-ret-int        6 rettype' (int)
 ' ffi-ret-float      9 rettype' (sf)  ' ffi-ret-float      9 rettype' (sf)
 ' ffi-ret-double   &10 rettype' (fp)  ' ffi-ret-double   &10 rettype' (fp)
 ' ffi-ret-longlong   8 rettype' (llong)  ' ffi-ret-longlong   8 rettype' (llong)
   ' ffi-ret-long       _long rettype' (long)
   ' ffi-ret-dlong      _long rettype' (dlong)
 ' ffi-ret-ptr      &12 rettype' (ptr)  ' ffi-ret-ptr      &12 rettype' (ptr)
   
 previous definitions  previous definitions

Removed from v.1.2  
changed lines
  Added in v.1.30


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