[gforth] / gforth / libcc.fs  

gforth: gforth/libcc.fs

Diff for /gforth/libcc.fs between version 1.36 and 1.67

version 1.36, Tue Jun 17 20:18:11 2008 UTC version 1.67, Fri Dec 31 18:09:02 2010 UTC
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 \ libcc.fs      foreign function interface implemented using a C compiler  \ libcc.fs      foreign function interface implemented using a C compiler
   
 \ Copyright (C) 2006,2007 Free Software Foundation, Inc.  \ Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
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 \ The files are built in .../lib/gforth/$VERSION/libcc/ or  \ The files are built in .../lib/gforth/$VERSION/libcc/ or
 \ ~/.gforth/libcc/$HOST/.  \ ~/.gforth/libcc/$HOST/.
   
 \ other things to do:  
   
 \ c-variable forth-name c-name  
 \ c-constant forth-name c-name  
   
 \ Todo: conversion between function pointers and xts (both directions)  \ Todo: conversion between function pointers and xts (both directions)
   
 \ taking an xt and turning it into a function pointer:  \ taking an xt and turning it into a function pointer:
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 \ : delete-file 2drop 0 ;  \ : delete-file 2drop 0 ;
   
 require struct.fs  require struct.fs
   require mkdir.fs
     \ counted-string  
   
 \ c-function-ft word body:  \ c-function-ft word body:
 struct  struct
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     cell% field cff-deferred \ xt of c-function deferred word      cell% field cff-deferred \ xt of c-function deferred word
     cell% field cff-lha \ address of the lib-handle for the lib that      cell% field cff-lha \ address of the lib-handle for the lib that
                         \ contains the wrapper function of the word                          \ contains the wrapper function of the word
       char% field cff-ctype  \ call type (function=1, value=0)
     char% field cff-rtype  \ return type      char% field cff-rtype  \ return type
     char% field cff-np     \ number of parameters      char% field cff-np     \ number of parameters
     1 0   field cff-ptypes \ #npar parameter types      1 0   field cff-ptypes \ #npar parameter types
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 variable lib-handle-addr \ points to the library handle of the current batch.  variable lib-handle-addr \ points to the library handle of the current batch.
                          \ the library handle is 0 if the current                           \ the library handle is 0 if the current
                          \ batch is not yet compiled.                           \ batch is not yet compiled.
     here 0 , lib-handle-addr ! \ just make sure LIB-HANDLE always works
 2variable lib-filename   \ filename without extension  2variable lib-filename   \ filename without extension
 2variable lib-modulename \ basename of the file without extension  2variable lib-modulename \ basename of the file without extension
   2variable libcc-named-dir-v \ directory for named libcc wrapper libraries
   Variable libcc-path      \ pointer to path of library directories
   
 : delete-file 2drop 0 ;  defer replace-rpath ( c-addr1 u1 -- c-addr2 u2 )
   ' noop is replace-rpath
   
 : .nb ( n -- )  : .nb ( n -- )
     0 .r ;      0 .r ;
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             node list-next @              node list-next @
     repeat ;      repeat ;
   
 \ linked libraries  2variable c-libs \ library names in a string (without "lib")
   
 list%  : add-lib ( c-addr u -- ) \ gforth
     cell% 2* field c-lib-string  
 end-struct c-lib%  
   
 variable c-libs \ linked list of library names (without "lib")  
   
 : add-lib ( c-addr u -- )  
 \G Add library lib@i{string} to the list of libraries, where  \G Add library lib@i{string} to the list of libraries, where
 \G @i{string} is represented by @i{c-addr u}.  \G @i{string} is represented by @i{c-addr u}.
     c-lib% %size allocate throw dup >r      c-libs 2@ d0= IF  0 allocate throw 0 c-libs 2!  THEN
     c-lib-string 2!      c-libs 2@ s"  -l" append 2swap append c-libs 2! ;
     r> c-libs list-insert ;  
   : add-libpath ( c-addr u -- ) \ gforth
 : append-l ( c-addr1 u1 node -- c-addr2 u2 )  \G Add path @i{string} to the list of library search pathes, where
     \ append " -l<nodelib>" to string1      \G @i{string} is represented by @i{c-addr u}.
     >r s"  -l" append r> c-lib-string 2@ append ;      c-libs 2@ d0= IF  0 allocate throw 0 c-libs 2!  THEN
       c-libs 2@ s"  -L" append 2swap append c-libs 2! ;
   
 \ C prefix lines  \ C prefix lines
   
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 : print-c-prefix-lines ( -- )  : print-c-prefix-lines ( -- )
     c-prefix-lines @ ['] print-c-prefix-line list-map ;      c-prefix-lines @ ['] print-c-prefix-line list-map ;
   
 : save-c-prefix-line ( c-addr u -- )  : write-c-prefix-line ( c-addr u -- )
     c-source-file-id @ ?dup-if      c-source-file-id @ dup if
         >r 2dup r> write-line throw          write-line throw
     then      else
           drop 2drop
       then ;
   
   : save-c-prefix-line1 ( c-addr u -- )
       2dup write-c-prefix-line
     align here 0 , c-prefix-lines-end list-append ( c-addr u )      align here 0 , c-prefix-lines-end list-append ( c-addr u )
     longstring, ;      longstring, ;
   
   defer save-c-prefix-line ( c-addr u -- )
   ' save-c-prefix-line1 is save-c-prefix-line
   
 : \c ( "rest-of-line" -- ) \ gforth backslash-c  : \c ( "rest-of-line" -- ) \ gforth backslash-c
     \G One line of C declarations for the C interface      \G One line of C declarations for the C interface
     -1 parse save-c-prefix-line ;      -1 parse save-c-prefix-line ;
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 set-current  set-current
   
 : parse-libcc-type ( "libcc-type" -- u )  \ call types
     parse-name libcc-types search-wordlist 0= -13 and throw execute ;  0
   const+ c-func
   const+ c-val
   const+ c-var
   drop
   
   : libcc-type ( c-addr u -- u2 )
           libcc-types search-wordlist 0= -13 and throw execute ;
   
   : parse-libcc-type ( "libcc-type" -- u )  parse-name libcc-type ;
   
 : parse-function-types ( "{libcc-type}" "--" "libcc-type" -- )  : parse-return-type ( "libcc-type" -- u )
     here 2 chars allot here begin          parse-libcc-type dup 0< -32 and throw ;
   
   : parse-function-types ( "{libcc-type}" "--" "libcc-type" -- addr )
       c-func c, here
       dup 2 chars allot here begin
         parse-libcc-type dup 0>= while          parse-libcc-type dup 0>= while
             c,              c,
     repeat      repeat
     drop here swap - over char+ c!      drop here swap - over char+ c!
     parse-libcc-type dup 0< -32 and throw swap c! ;      parse-return-type swap c! ;
   
   : parse-value-type ( "{--}" "libcc-type" -- addr )
       c-val c, here
       parse-libcc-type  dup 0< if drop parse-return-type then
       c,  0 c, ;
   
   : parse-variable-type ( -- addr )
           c-var c, here
           s" a" libcc-type c,  0 c, ;
   
 : type-letter ( n -- c )  : type-letter ( n -- c )
     chars s" nadrfv" drop + c@ ;      chars s" nadrfv" drop + c@ ;
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 \ the call itself  \ the call itself
   
 : gen-wrapped-call { d: pars d: c-name fp-change1 sp-change1 -- }  : gen-wrapped-func { d: pars d: c-name fp-change1 sp-change1 -- }
     c-name type ." ("      c-name type ." ("
     fp-change1 sp-change1 pars over + swap u+do      fp-change1 sp-change1 pars over + swap u+do
         i c@ gen-par          i c@ gen-par
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     loop      loop
     2drop ." )" ;      2drop ." )" ;
   
   : gen-wrapped-const { d: pars d: c-name fp-change1 sp-change1 -- }
           ." (" c-name type ." )" ;
   
   : gen-wrapped-var { d: pars d: c-name fp-change1 sp-change1 -- }
           ." &(" c-name type ." )" ;
   
   create gen-call-types
   ' gen-wrapped-func ,
   ' gen-wrapped-const ,
   ' gen-wrapped-var ,
   
   : gen-wrapped-call ( pars c-name fp-change1 sp-change1 -- )
           5 pick 3 chars - c@ cells gen-call-types + @ execute ;
   
 \ calls for various kinds of return values  \ calls for various kinds of return values
   
 : gen-wrapped-void ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )  : gen-wrapped-void ( pars c-name fp-change1 sp-change1 -- fp-change sp-change )
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     dup { descriptor }      dup { descriptor }
     count { ret } count 2dup { d: pars } chars + count { d: c-name }      count { ret } count 2dup { d: pars } chars + count { d: c-name }
     ." void " lib-modulename 2@ type ." _LTX_" descriptor wrapper-function-name 2dup type drop free throw      ." void " lib-modulename 2@ type ." _LTX_" descriptor wrapper-function-name 2dup type drop free throw
     .\" (void)\n"      .\" (GFORTH_ARGS)\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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     endif      endif
     .\" }\n" ;      .\" }\n" ;
   
 : open-wrappers ( -- addr )  : scan-back { c-addr u1 c -- c-addr u2 }
     lib-filename 2@ s" .la" s+      \ the last occurence of c in c-addr u1 is at u2-1; if it does not
     2dup open-lib >r      \ occur, u2=0.
     drop free throw r> ;      c-addr 1- c-addr u1 + 1- u-do
           i c@ c = if
 : tempdir ( -- c-addr u )              c-addr i over - 1+ unloop exit endif
     s" TMPDIR" getenv dup 0= if      1 -loop
         2drop s" /tmp"      c-addr 0 ;
     then ;  
   : dirname ( c-addr1 u1 -- c-addr2 u2 )
       \ directory name of the file name c-addr1 u1, including the final "/".
       '/ scan-back ;
   
   : basename ( c-addr1 u1 -- c-addr2 u2 )
       \ file name without directory component
       2dup dirname nip /string ;
   
 : gen-filename ( x -- c-addr u )  : gen-filename ( x -- c-addr u )
     \ generates a file basename for lib-handle-addr X      \ generates a file basename for lib-handle-addr X
     0 <<# ['] #s $10 base-execute #>      0 <<# ['] #s $10 base-execute #>
     s" gforth_c_" 2swap s+ #>> ;      s" gforth_c_" 2swap s+ #>> ;
   
 : prepend-dirname ( c-addr1 u1 -- c-addr2 u2 )  : libcc-named-dir ( -- c-addr u )
     tempdir s" /" s+ 2over append      libcc-named-dir-v 2@ ;
     2swap drop free throw ;  
   
 : c-library-name1 ( c-addr u -- )  : libcc-tmp-dir ( -- c-addr u )
     \ set up filenames for a new library; c-addr u is the basename of      s" ~/.gforth/libcc-tmp/" ;
     \ the library  
   : prepend-dirname ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
       2over s+ 2swap drop free throw ;
   
   : open-wrappers ( -- addr|0 )
       lib-filename 2@ s" .la" s+
       2dup libcc-named-dir string-prefix? if ( c-addr u )
           \ see if we can open it in the path
           libcc-named-dir nip /string
           libcc-path open-path-file if
               0 exit endif
           ( wfile-id c-addr2 u2 ) rot close-file throw save-mem ( c-addr2 u2 )
       endif
       \ 2dup cr type
       2dup open-lib >r
       drop free throw r> ;
   
   : c-library-name-setup ( c-addr u -- )
     assert( c-source-file-id @ 0= )      assert( c-source-file-id @ 0= )
     prepend-dirname { d: filename }      { d: filename }
     here 0 , lib-handle-addr ! filename 2dup lib-filename 2!      here 0 , lib-handle-addr ! filename lib-filename 2!
     2dup tempdir nip 1+ /string lib-modulename 2!      filename basename lib-modulename 2!
     s" .c" s+ 2dup w/o create-file throw dup c-source-file-id !      ['] write-c-prefix-line is save-c-prefix-line ;
     ['] print-c-prefix-lines swap outfile-execute  
   : c-library-name-create ( -- )
       lib-filename 2@ s" .c" s+ 2dup w/o create-file throw
       c-source-file-id !
     drop free throw ;      drop free throw ;
   
   : c-named-library-name ( c-addr u -- )
       \ set up filenames for a (possibly new) library; c-addr u is the
       \ basename of the library
       libcc-named-dir prepend-dirname c-library-name-setup
       open-wrappers dup if
           lib-handle-addr @ !
       else
           libcc-named-dir $1ff mkdir-parents drop
           drop c-library-name-create
           c-prefix-lines @ ['] print-c-prefix-line \ first line only
           c-source-file-id @ outfile-execute
       endif ;
   
   : c-tmp-library-name ( c-addr u -- )
       \ set up filenames for a new library; c-addr u is the basename of
       \ the library
       libcc-tmp-dir 2dup $1ff mkdir-parents drop
       prepend-dirname c-library-name-setup c-library-name-create
       ['] print-c-prefix-lines c-source-file-id @ outfile-execute ;
   
   : lib-handle ( -- addr )
       lib-handle-addr @ @ ;
   
 : init-c-source-file ( -- )  : init-c-source-file ( -- )
       lib-handle 0= if
     c-source-file-id @ 0= if      c-source-file-id @ 0= if
         here gen-filename c-library-name1              here gen-filename c-tmp-library-name
           endif
     endif ;      endif ;
   
 : c-source-file ( -- file-id )  : c-source-file ( -- file-id )
     c-source-file-id @ assert( dup ) ;      c-source-file-id @ assert( dup ) ;
   
   : notype-execute ( ... xt -- ... )
       what's type { oldtype } try
           ['] 2drop is type execute 0
       restore
           oldtype is type
       endtry
       throw ;
   
   : c-source-file-execute ( ... xt -- ... )
       \ direct the output of xt to c-source-file, or nothing
       lib-handle if
           notype-execute
       else
           c-source-file outfile-execute
       endif ;
   
 : .lib-error ( -- )  : .lib-error ( -- )
     [ifdef] lib-error      [ifdef] lib-error
         ['] cr stderr outfile-execute          ['] cr stderr outfile-execute
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 DEFER compile-wrapper-function ( -- )  DEFER compile-wrapper-function ( -- )
 : compile-wrapper-function1 ( -- )  : compile-wrapper-function1 ( -- )
       lib-handle 0= if
     c-source-file close-file throw      c-source-file close-file throw
     0 c-source-file-id !      0 c-source-file-id !
     [ libtool-command s"  --silent --mode=compile gcc -I " s+          [ libtool-command s"  --silent --tag=CC --mode=compile " s+
     s" includedir" getenv append ] sliteral            libtool-cc append s"  -I '" append
             s" includedir" getenv append  s" '" append ] sliteral
     s"  -O -c " s+ lib-filename 2@ append s" .c -o " append      s"  -O -c " s+ lib-filename 2@ append s" .c -o " append
     lib-filename 2@ append s" .lo" append ( c-addr u )      lib-filename 2@ append s" .lo" append ( c-addr u )
 \    cr 2dup type          \    2dup type cr
     2dup system drop free throw $? abort" libtool compile failed"      2dup system drop free throw $? abort" libtool compile failed"
     [ libtool-command s"  --silent --mode=link gcc -module -rpath " s+ ] sliteral          [ libtool-command s"  --silent --tag=CC --mode=link " s+
     tempdir s+ s"  " append            libtool-cc append libtool-flags append s"  -module -rpath " s+ ] sliteral
           lib-filename 2@ dirname replace-rpath s+ s"  " append
     lib-filename 2@ append s" .lo -o " append      lib-filename 2@ append s" .lo -o " append
     lib-filename 2@ append s" .la" append ( c-addr u )      lib-filename 2@ append s" .la" append ( c-addr u )
     c-libs @ ['] append-l list-map          c-libs 2@ append
 \    2dup type cr  \    2dup type cr
     2dup system drop free throw $? abort" libtool link failed"      2dup system drop free throw $? abort" libtool link failed"
     open-wrappers          open-wrappers dup 0= if
     dup 0= if  
         .lib-error true abort" open-lib failed"          .lib-error true abort" open-lib failed"
     endif      endif
     ( lib-handle ) lib-handle-addr @ !      ( lib-handle ) lib-handle-addr @ !
       endif
     lib-filename 2@ drop free throw 0 0 lib-filename 2! ;      lib-filename 2@ drop free throw 0 0 lib-filename 2! ;
 ' compile-wrapper-function1 IS compile-wrapper-function  ' compile-wrapper-function1 IS compile-wrapper-function
 \    s" ar rcs xxx.a xxx.o" system  \    s" ar rcs xxx.a xxx.o" system
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     endif      endif
     wrapper-name drop free throw ;      wrapper-name drop free throw ;
   
 : c-function-ft ( xt-defr xt-cfr "c-name" "{libcc-type}" "--" "libcc-type" -- )  : c-function-ft ( xt-defr xt-cfr xt-parse "c-name" "type signature" -- )
     \ build time/first time action for c-function      \ build time/first time action for c-function
     init-c-source-file      { xt-parse-types } init-c-source-file
     noname create 2, lib-handle-addr @ ,      noname create 2, lib-handle-addr @ ,
     parse-name { d: c-name }      parse-name { d: c-name }
     here parse-function-types c-name string,      xt-parse-types execute c-name string,
     ['] gen-wrapper-function c-source-file outfile-execute      ['] gen-wrapper-function c-source-file-execute
   does> ( ... -- ... )    does> ( ... -- ... )
     dup 2@ { xt-defer xt-cfr }      dup 2@ { xt-defer xt-cfr }
     dup cff-lha @ @ 0= if      dup cff-lha @ @ 0= if
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   does> ( ... -- ... )    does> ( ... -- ... )
     @ call-c ;      @ call-c ;
   
 : c-function ( "forth-name" "c-name" "@{type@}" "--" "type" -- ) \ gforth  : (c-function) ( xt-parse "forth-name" "c-name" "{stack effect}" -- )
       { xt-parse-types } defer lastxt dup c-function-rt
       lastxt xt-parse-types c-function-ft
       lastxt swap defer! ;
   
   : c-function ( "forth-name" "c-name" "@{type@}" "---" "type" -- ) \ gforth
     \G Define a Forth word @i{forth-name}.  @i{Forth-name} has the      \G Define a Forth word @i{forth-name}.  @i{Forth-name} has the
     \G specified stack effect and calls the C function @code{c-name}.      \G specified stack effect and calls the C function @code{c-name}.
     defer lastxt dup c-function-rt lastxt c-function-ft      ['] parse-function-types (c-function) ;
     lastxt swap defer! ;  
   
 : clear-libs ( -- )  : c-value ( "forth-name" "c-name" "[---]" "type" -- ) \ gforth
       \G Define a Forth word @i{forth-name}.  @i{Forth-name} has the
       \G specified stack effect and gives the C value of @code{c-name}.
       ['] parse-value-type (c-function) ;
   
   : c-variable ( "forth-name" "c-name" -- ) \ gforth
       \G Define a Forth word @i{forth-name}.  @i{Forth-name} returns the
       \G address of @code{c-name}.
       ['] parse-variable-type (c-function) ;
   
   : clear-libs ( -- ) \ gforth
 \G Clear the list of libs  \G Clear the list of libs
     c-source-file-id @ if      c-source-file-id @ if
         compile-wrapper-function          compile-wrapper-function
     endif      endif
     0 c-libs ! ;      0. c-libs 2! ;
 clear-libs  clear-libs
   
 : c-library-incomplete ( -- )  : c-library-incomplete ( -- )
     true abort" Called function of unfinished named C library" ;      true abort" Called function of unfinished named C library" ;
   
 : c-library-name ( c-addr u -- ) \ gforth  : c-library-name ( c-addr u -- ) \ gforth
 \G Start a C library with name @i{c-addr u}.  \G Start a C library interface with name @i{c-addr u}.
     clear-libs      clear-libs
     ['] c-library-incomplete is compile-wrapper-function      ['] c-library-incomplete is compile-wrapper-function
     c-library-name1 ;      c-named-library-name ;
   
 : c-library ( "name" -- ) \ gforth  : c-library ( "name" -- ) \ gforth
 \G Parsing version of @code{c-library-name}  \G Parsing version of @code{c-library-name}
     name save-mem c-library-name ;      parse-name save-mem c-library-name ;
   
 : end-c-library ( -- )  : end-c-library ( -- ) \ gforth
   \G Finish and (if necessary) build the latest C library interface.
       ['] save-c-prefix-line1 is save-c-prefix-line
     ['] compile-wrapper-function1 is compile-wrapper-function      ['] compile-wrapper-function1 is compile-wrapper-function
     compile-wrapper-function1 ;      compile-wrapper-function1 ;
   
   : init-libcc ( -- )
       s" ~/.gforth/libcc-named/" libcc-named-dir-v 2!
   [IFDEF] $init
       libcc-path $init
       libcc-named-dir libcc-path also-path
       [ s" libccdir" getenv ] sliteral libcc-path also-path
   [THEN]
   ;
   
   init-libcc
   
   :noname ( -- )
       defers 'cold
       init-libcc ;
   is 'cold

Generate output suitable for use with a patch program
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Removed from v.1.36  
changed lines
  Added in v.1.67
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