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Diff for /gforth/fflib.fs between versions 1.1 and 1.27

version 1.1, 2003/08/15 21:45:46 version 1.27, 2009/02/24 22:57:48
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 \ lib.fs        shared library support package          11may97py  \ lib.fs        shared library support package          16aug03py
   
 \ Copyright (C) 1995,1996,1997,1998,2000 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
   c-library fflib
   s" avcall" add-lib
   s" callback" add-lib
   
   \c #include <avcall.h>
   \c #include <callback.h>
   \c static av_alist alist;
   \c static va_alist gforth_clist;
   \c #ifndef HAS_BACKLINK
   \c static void **saved_gforth_pointers;
   \c #endif
   \c static float frv;
   \c static int irv;
   \c static double drv;
   \c static long long llrv;
   \c static void * prv;
   \c typedef void *Label;
   \c typedef Label *Xt;
   \c 
   \c void gforth_callback_ffcall(Xt* fcall, void * alist)
   \c {
   \c #ifndef HAS_BACKLINK
   \c   void **gforth_pointers = saved_gforth_pointers;
   \c #endif
   \c   {
   \c     /* save global valiables */
   \c     Cell *rp = gforth_RP;
   \c     Cell *sp = gforth_SP;
   \c     Float *fp = gforth_FP;
   \c     char *lp = gforth_LP;
   \c     va_alist clist = gforth_clist;
   \c 
   \c     gforth_clist = (va_alist)alist;
   \c 
   \c     gforth_engine(fcall, sp, rp, fp, lp, gforth_UP);
   \c 
   \c     /* restore global variables */
   \c     gforth_RP = rp;
   \c     gforth_SP = sp;
   \c     gforth_FP = fp;
   \c     gforth_LP = lp;
   \c     gforth_clist = clist;
   \c   }
   \c }
   
   \c #define av_start_void1(c_addr) av_start_void(alist, c_addr)
   c-function av-start-void av_start_void1 a -- void
   \c #define av_start_int1(c_addr) av_start_int(alist, c_addr, &irv)
   c-function av-start-int av_start_int1 a -- void
   \c #define av_start_float1(c_addr) av_start_float(alist, c_addr, &frv)
   c-function av-start-float av_start_float1 a -- void
   \c #define av_start_double1(c_addr) av_start_double(alist, c_addr, &drv)
   c-function av-start-double av_start_double1 a -- void
   \c #define av_start_longlong1(c_addr) av_start_longlong(alist, c_addr, &llrv)
   c-function av-start-longlong av_start_longlong1 a -- void
   \c #define av_start_ptr1(c_addr) av_start_ptr(alist, c_addr, void *, &prv)
   c-function av-start-ptr av_start_ptr1 a -- void
   \c #define av_int1(w) av_int(alist,w)
   c-function av-int av_int1 n -- void
   \c #define av_float1(r) av_float(alist,r)
   c-function av-float av_float1 r -- void
   \c #define av_double1(r) av_double(alist,r)
   c-function av-double av_double1 r -- void
   \c #define av_longlong1(d) av_longlong(alist,d)
   c-function av-longlong av_longlong1 d -- void
   \c #define av_ptr1(a) av_ptr(alist, void *, a)
   c-function av-ptr av_ptr1 a -- void
   \c #define av_call_void() av_call(alist)
   c-function av-call-void av_call_void -- void
   \c #define av_call_int() (av_call(alist), irv)
   c-function av-call-int av_call_int -- n
   \c #define av_call_float() (av_call(alist), frv)
   c-function av-call-float av_call_float -- r
   \c #define av_call_double() (av_call(alist), drv)
   c-function av-call-double av_call_double -- r
   \c #define av_call_longlong() (av_call(alist), llrv)
   c-function av-call-longlong av_call_longlong -- d
   \c #define av_call_ptr() (av_call(alist), prv)
   c-function av-call-ptr av_call_ptr -- a
   \c #define alloc_callback1(a_ip) alloc_callback(gforth_callback_ffcall, (Xt *)a_ip)
   c-function alloc-callback alloc_callback1 a -- a
   \c #define va_start_void1() va_start_void(gforth_clist)
   c-function va-start-void va_start_void1 -- void
   \c #define va_start_int1() va_start_int(gforth_clist)
   c-function va-start-int va_start_int1 -- void
   \c #define va_start_longlong1() va_start_longlong(gforth_clist)
   c-function va-start-longlong va_start_longlong1 -- void
   \c #define va_start_ptr1() va_start_ptr(gforth_clist, (char *))
   c-function va-start-ptr va_start_ptr1 -- void
   \c #define va_start_float1() va_start_float(gforth_clist)
   c-function va-start-float va_start_float1 -- void
   \c #define va_start_double1() va_start_double(gforth_clist)
   c-function va-start-double va_start_double1 -- void
   \c #define va_arg_int1() va_arg_int(gforth_clist)
   c-function va-arg-int va_arg_int1 -- n
   \c #define va_arg_longlong1() va_arg_longlong(gforth_clist)
   c-function va-arg-longlong va_arg_longlong1 -- d
   \c #define va_arg_ptr1() va_arg_ptr(gforth_clist, char *)
   c-function va-arg-ptr va_arg_ptr1 -- a
   \c #define va_arg_float1() va_arg_float(gforth_clist)
   c-function va-arg-float va_arg_float1 -- r
   \c #define va_arg_double1() va_arg_double(gforth_clist)
   c-function va-arg-double va_arg_double1 -- r
   \c #define va_return_void1() va_return_void(gforth_clist)
   c-function va-return-void1 va_return_void1 -- void
   \c #define va_return_int1(w) va_return_int(gforth_clist,w)
   c-function va-return-int1 va_return_int1 n -- void
   \c #define va_return_ptr1(w) va_return_ptr(gforth_clist, void *, w)
   c-function va-return-ptr1 va_return_ptr1 a -- void
   \c #define va_return_longlong1(d) va_return_longlong(gforth_clist,d)
   c-function va-return-longlong1 va_return_longlong1 d -- void
   \c #define va_return_float1(r) va_return_float(gforth_clist,r)
   c-function va-return-float1 va_return_float1 r -- void
   \c #define va_return_double1(r) va_return_double(gforth_clist,r)
   c-function va-return-double1 va_return_double1 r -- void
   end-c-library
   
   : av-int-r      2r> >r av-int ;
   : av-float-r    f@local0 lp+ av-float ;
   : av-double-r   f@local0 lp+ av-double ;
   : av-longlong-r r> 2r> rot >r av-longlong ;
   : av-ptr-r      2r> >r av-ptr ;
   : va-return-void      va-return-void1     0 (bye) ;
   : va-return-int       va-return-int1      0 (bye) ;
   : va-return-ptr       va-return-ptr1      0 (bye) ;
   : va-return-longlong  va-return-longlong1 0 (bye) ;
   : va-return-float     va-return-float1    0 (bye) ;
   : va-return-double    va-return-double1   0 (bye) ;
   
   \ start of fflib proper
   
 Variable libs 0 libs !  Variable libs 0 libs !
   \ links between libraries
 Variable thisproc  Variable thisproc
 Variable thislib  Variable thislib
 \G links between libraries  
   Variable revdec  revdec off
   \ turn revdec on to compile bigFORTH libraries
   Variable revarg  revarg off
   \ turn revarg on to compile declarations with reverse arguments
   Variable legacy  legacy off
   \ turn legacy on to compile bigFORTH legacy libraries
   
   Vocabulary c-decl
   Vocabulary cb-decl
   
 : @lib ( lib -- )  : @lib ( lib -- )
     \G obtains library handle      \G obtains library handle
Line 44  Variable thislib Line 185  Variable thislib
     swap 2 cells + dup @ A, !      swap 2 cells + dup @ A, !
     0 , 0 A, ;      0 , 0 A, ;
   
   Defer legacy-proc  ' noop IS legacy-proc
   
 : proc:  ( lib "name" -- )  : proc:  ( lib "name" -- )
     \G Creates a named proc stub  \G Creates a named proc stub
     Create proc, 0      Create proc, 0 also c-decl
       legacy @ IF  legacy-proc  THEN
 DOES> ( x1 .. xn -- r )  DOES> ( x1 .. xn -- r )
     dup cell+ @ swap 3 cells + >r ;      dup cell+ @ swap 3 cells + >r ;
   
   Variable ind-call ind-call off
   : fptr ( "name" -- )
       Create here thisproc ! 0 , 0 , 0 ,  0 also c-decl  ind-call on
       DOES>  3 cells + >r ;
   
 : library ( "name" "file" -- )  : library ( "name" "file" -- )
     \G loads library "file" and creates a proc defining word "name"  \G loads library "file" and creates a proc defining word "name"
     \G library format:  \G library format:
     \G    linked list of libraries  \G    linked list of libraries
     \G    library handle  \G    library handle
     \G    linked list of library's procs  \G    linked list of library's procs
     \G    OS name of library as counted string  \G    OS name of library as counted string
     Create  here libs @ A, dup libs !      Create  here libs @ A, dup libs !
     0 , 0 A, bl sword string, @lib      0 , 0 A, parse-name string, @lib
 DOES> ( -- )  dup thislib ! proc: ;  DOES> ( -- )  dup thislib ! proc: ;
   
 : init-shared-libs ( -- )  : init-shared-libs ( -- )
     defers 'cold  libs      defers 'cold
     0  libs  BEGIN  @ dup  WHILE  dup  REPEAT  drop      0  libs  BEGIN
     BEGIN  dup  WHILE  >r          @ dup WHILE
         r@ @lib              dup  REPEAT
         r@ 2 cells +  BEGIN  @ dup  WHILE  r@ over @proc  REPEAT      drop BEGIN
         drop rdrop          dup  WHILE
     REPEAT  drop ;              >r
               r@ @lib
               r@ 2 cells +  BEGIN
                   @ dup  WHILE
                       r@ over @proc  REPEAT
               drop rdrop
       REPEAT
       drop ;
   
 ' init-shared-libs IS 'cold  ' init-shared-libs IS 'cold
   
 ' av-int AConstant int  : argtype ( revxt pushxt fwxt "name" -- )
 ' av-float AConstant sf      Create , , , ;
 ' av-double AConstant df  
 ' av-longlong AConstant llong  
 ' av-ptr AConstant ptr  
   
 Variable revdec  revdec off  : arg@ ( arg -- argxt pushxt )
 \ turn revdec on to compile bigFORTH libraries      revarg @ IF  2 cells + @ ['] noop swap  ELSE  2@  THEN ;
   
 : rettype ( endxt startxt "name" -- )  : arg, ( xt -- )
     create immediate 2,      dup ['] noop = IF  drop  EXIT  THEN  compile, ;
   DOES>  
   : decl, ( 0 arg1 .. argn call start -- )
     2@ compile, >r      2@ compile, >r
     revdec @ IF      revdec @ IF  0 >r
         0 >r  BEGIN  dup  WHILE  >r  REPEAT  drop          BEGIN  dup  WHILE  >r  REPEAT
         BEGIN  r> dup  WHILE  compile,  REPEAT  drop          BEGIN  r> dup  WHILE  arg@ arg,  REPEAT  drop
     ELSE          BEGIN  dup  WHILE  arg,  REPEAT drop
         BEGIN dup  WHILE  compile,  REPEAT  drop      ELSE  0 >r
           BEGIN  dup  WHILE  arg@ arg, >r REPEAT drop
           BEGIN  r> dup  WHILE  arg,  REPEAT  drop
     THEN      THEN
     r> compile,  postpone EXIT      r> compile,  postpone EXIT ;
     here thisproc @ 2 cells + ! bl sword s,  
   : symbol, ( "c-symbol" -- )
       here thisproc @ 2 cells + ! parse-name s,
     thislib @ thisproc @ @proc ;      thislib @ thisproc @ @proc ;
   
 ' av-call-void ' av-start-void rettype (void)  : rettype ( endxt startxt "name" -- )
 ' av-call-int ' av-start-int rettype (int)      Create 2,
 ' av-call-float ' av-start-float rettype (sf)    DOES>  decl, ind-call @ 0= IF  symbol,  THEN
 ' av-call-double ' av-start-double rettype (fp)      previous revarg off ind-call off ;
 ' av-call-longlong ' av-start-longlong rettype (llong)  
 ' av-call-ptr ' av-start-ptr rettype (ptr)  : func@ >body cell+ @ ;
   : func' ' func@ ;
   : [func'] postpone ['] postpone func@ ; immediate restrict
   
   also c-decl definitions
   
   : <rev>  revarg on ;
   
   ' av-int      ' av-int-r      ' >r  argtype int
   ' av-float    ' av-float-r    ' f>l argtype sf
   ' av-double   ' av-double-r   ' f>l argtype df
   ' av-longlong ' av-longlong-r ' 2>r argtype dlong
   ' av-ptr      ' av-ptr-r      ' >r  argtype ptr
   
   ' av-call-void     ' av-start-void     rettype (void)
   ' av-call-int      ' av-start-int      rettype (int)
   ' av-call-float    ' av-start-float    rettype (sf)
   ' av-call-double   ' av-start-double   rettype (fp)
   ' av-call-longlong ' av-start-longlong rettype (dlong)
   ' av-call-ptr      ' av-start-ptr      rettype (ptr)
   
 \ compatibility layer for old library -- use is deprecated  : (addr)  postpone EXIT drop symbol, previous revarg off ;
   
 Variable legacy  previous definitions
   
 \ turn legacy on for old library  \ legacy support for old library interfaces
   \ interface to old vararg stuff not implemented yet
   
 warnings @ warnings off  also c-decl
   
   :noname ( n 0 -- 0 int1 .. intn )
       legacy @ 0< revarg !
       swap 0 ?DO  int  LOOP  (int)
   ; IS legacy-proc
   
 : (int) ( n -- )  : (int) ( n -- )
     legacy @ IF      >r ' execute r> 0 ?DO  int  LOOP  (int) ;
         >r ' execute r> 0 ?DO  int  LOOP  
     THEN  (int) ;  
 : (void) ( n -- )  : (void) ( n -- )
     legacy @ IF      >r ' execute r> 0 ?DO  int  LOOP  (void) ;
         >r ' execute r> 0 ?DO  int  LOOP  
     THEN  (void) ;  
 : (float) ( n -- )  : (float) ( n -- )
     legacy @ IF      >r ' execute r> 0 ?DO  df   LOOP  (fp) ;
         >r ' execute r> 0 ?DO  df  LOOP  
     THEN  (df) ;  previous
   
   \ callback stuff
   
 warnings on  Variable callbacks
   \G link between callbacks
   
   : callback ( -- )
       Create  0 ] postpone >r also cb-decl
     DOES>
       Create here >r 0 , callbacks @ A, r@ callbacks !
       swap postpone Literal postpone call , postpone EXIT
       r> dup cell+ cell+ alloc-callback swap !
     DOES> @ ;
   
   : callback; ( 0 xt1 .. xtn -- )
       BEGIN  over  WHILE  compile,  REPEAT
       postpone r> postpone execute compile, drop
       postpone EXIT postpone [ previous ; immediate
   
   : va-ret ( xt xt -- )
       Create A, A, immediate
     DOES> 2@ compile, ;
   
   : init-callbacks ( -- )
       defers 'cold  callbacks 1 cells -
       BEGIN  cell+ @ dup  WHILE  dup cell+ cell+ alloc-callback over !
       REPEAT  drop ;
   
 [ifdef] testing  ' init-callbacks IS 'cold
   
 library libc /lib/libc.so.6  also cb-decl definitions
                   
 libc sleep int (int) sleep  
 libc open  int int ptr (int) open  
 libc lseek int llong int (llong) lseek  
 libc read  int ptr int (int) read  
 libc close int (int) close  
   
 library libm /lib/libm.so.6  \ arguments
   
 libm fmodf sf sf (sf) fmodf  ' va-arg-int      Alias int
 libm fmod  df df (fp) fmod  ' va-arg-float    Alias sf
   ' va-arg-double   Alias df
   ' va-arg-longlong Alias dlong
   ' va-arg-ptr      Alias ptr
   
   ' va-return-void     ' va-start-void     va-ret (void)
   ' va-return-int      ' va-start-int      va-ret (int)
   ' va-return-float    ' va-start-float    va-ret (sf)
   ' va-return-double   ' va-start-double   va-ret (fp)
   ' va-return-longlong ' va-start-longlong va-ret (dlong)
   ' va-return-ptr      ' va-start-ptr      va-ret (ptr)
   
 [then]      previous definitions
Removed from v.1.1  
changed lines
  Added in v.1.27

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