version 1.12, 2007/04/25 22:11:29
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version 1.65, 2010/12/30 21:46:14
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\ libcc.fs foreign function interface implemented using a C compiler |
\ libcc.fs foreign function interface implemented using a C compiler |
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\ Copyright (C) 2006 Free Software Foundation, Inc. |
\ Copyright (C) 2006,2007,2008,2009 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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\ 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. |
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\ This program is distributed in the hope that it will be useful, |
\ This program is distributed in the hope that it will be useful, |
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\ GNU General Public License for more details. |
\ GNU General Public License for more details. |
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\ 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. |
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\ What this implementation does is this: if it sees a declaration like |
\ What this implementation does is this: if it sees a declaration like |
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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/. |
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\ other things to do: |
\ Todo: conversion between function pointers and xts (both directions) |
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\ c-variable forth-name c-name |
\ taking an xt and turning it into a function pointer: |
\ c-constant forth-name c-name |
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\ e.g., assume we have the xt of + and want to create a C function int |
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\ gforth_callback_plus(int, int), and then pass the pointer to that |
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\ function: |
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\ There should be Forth code like this: |
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\ ] + 0 (bye) |
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\ Assume that the start of this code is START |
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\ Now, there should be a C function: |
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\ int gforth_callback_plus(int p1, int p2) |
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\ { |
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\ Cell *sp = gforth_SP; |
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\ Float *fp = gforth_FP; |
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\ Float *fp = gforth_FP; |
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\ Address lp = gforth_LP; |
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\ sp -= 2; |
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\ sp[0] = p1; |
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\ sp[1] = p2; |
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\ gforth_engine(START, sp, rp, fp, lp); |
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\ sp += 1; |
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\ gforth_RP = rp; |
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\ gforth_SP = sp; |
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\ gforth_FP = fp; |
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\ gforth_LP = lp; |
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\ return sp[0]; |
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\ } |
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\ and the pointer to that function is the C function pointer for the XT of +. |
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\ Future problems: |
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\ how to combine the Forth code generation with inlining |
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\ START is not a constant across executions (when caching the C files) |
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\ Solution: make START a variable, and store into it on startup with dlsym |
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\ Syntax: |
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\ callback <rettype> <params> <paramtypes> -- <rettype> |
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\ data structures |
\ data structures |
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\ first-time word, then to the run-time word; the run-time word calls |
\ first-time word, then to the run-time word; the run-time word calls |
\ the c function. |
\ the c function. |
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[ifundef] parse-name |
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' parse-word alias parse-name |
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[then] |
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[ifundef] defer! |
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: defer! ( xt xt-deferred -- ) \ gforth defer-store |
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\G Changes the @code{defer}red word @var{xt-deferred} to execute @var{xt}. |
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>body [ has? rom [IF] ] @ [ [THEN] ] ! ; |
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[then] |
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\ : delete-file 2drop 0 ; |
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require struct.fs |
require struct.fs |
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require mkdir.fs |
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\ counted-string |
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\ c-function-ft word body: |
\ c-function-ft word body: |
struct |
struct |
cell% field cff-cfr \ xt of c-function-rt word |
cell% field cff-cfr \ xt of c-function-rt word |
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 |
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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 |
\ counted string: c-name |
\ counted string: c-name |
end-struct cff% |
end-struct cff% |
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variable c-source-file-id \ contains the source file id of the current batch |
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0 c-source-file-id ! |
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variable lib-handle-addr \ points to the library handle of the current batch. |
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\ the library handle is 0 if the current |
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\ batch is not yet compiled. |
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here 0 , lib-handle-addr ! \ just make sure LIB-HANDLE always works |
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2variable lib-filename \ filename without extension |
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2variable lib-modulename \ basename of the file without extension |
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2variable libcc-named-dir-v \ directory for named libcc wrapper libraries |
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Variable libcc-path \ pointer to path of library directories |
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defer replace-rpath ( c-addr1 u1 -- c-addr2 u2 ) |
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' noop is replace-rpath |
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: .nb ( n -- ) |
: .nb ( n -- ) |
0 .r ; |
0 .r ; |
Line 120 end-struct cff%
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Line 179 end-struct cff%
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c c-addr1 c! |
c c-addr1 c! |
c-addr1 u1 1 /string ; |
c-addr1 u1 1 /string ; |
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\ linked list stuff (should go elsewhere) |
: s+ { addr1 u1 addr2 u2 -- addr u } |
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u1 u2 + allocate throw { addr } |
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addr1 addr u1 move |
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addr2 addr u1 + u2 move |
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addr u1 u2 + |
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; |
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: append { addr1 u1 addr2 u2 -- addr u } |
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addr1 u1 u2 + dup { u } resize throw { addr } |
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addr2 addr u1 + u2 move |
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addr u ; |
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hex |
\ linked list stuff (should go elsewhere) |
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struct |
struct |
cell% field list-next |
cell% field list-next |
Line 146 end-struct list%
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Line 215 end-struct list%
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node list-next @ |
node list-next @ |
repeat ; |
repeat ; |
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2variable c-libs \ library names in a string (without "lib") |
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: add-lib ( c-addr u -- ) \ gforth |
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\G Add library lib@i{string} to the list of libraries, where |
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\G @i{string} is represented by @i{c-addr u}. |
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c-libs 2@ d0= IF 0 allocate throw 0 c-libs 2! THEN |
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c-libs 2@ s" -l" append 2swap append c-libs 2! ; |
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: add-libpath ( c-addr u -- ) \ gforth |
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\G Add path @i{string} to the list of library search pathes, where |
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\G @i{string} is represented by @i{c-addr u}. |
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c-libs 2@ d0= IF 0 allocate throw 0 c-libs 2! THEN |
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c-libs 2@ s" -L" append 2swap append c-libs 2! ; |
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\ C prefix lines |
\ C prefix lines |
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\ linked list of longcstrings: [ link | count-cell | characters ] |
\ linked list of longcstrings: [ link | count-cell | characters ] |
Line 158 end-struct c-prefix%
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Line 241 end-struct c-prefix%
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variable c-prefix-lines 0 c-prefix-lines ! |
variable c-prefix-lines 0 c-prefix-lines ! |
variable c-prefix-lines-end c-prefix-lines c-prefix-lines-end ! |
variable c-prefix-lines-end c-prefix-lines c-prefix-lines-end ! |
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: save-c-prefix-line ( c-addr u -- ) |
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align here 0 , c-prefix-lines-end list-append ( c-addr u ) |
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longstring, ; |
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: \c ( "rest-of-line" -- ) |
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-1 parse save-c-prefix-line ; |
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: print-c-prefix-line ( node -- ) |
: print-c-prefix-line ( node -- ) |
dup c-prefix-chars swap c-prefix-count @ type cr ; |
dup c-prefix-chars swap c-prefix-count @ type cr ; |
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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 ; |
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\c #include "engine/libcc.h" |
: write-c-prefix-line ( c-addr u -- ) |
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c-source-file-id @ dup if |
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write-line throw |
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else |
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drop 2drop |
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then ; |
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: save-c-prefix-line1 ( c-addr u -- ) |
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2dup write-c-prefix-line |
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align here 0 , c-prefix-lines-end list-append ( c-addr u ) |
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longstring, ; |
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defer save-c-prefix-line ( c-addr u -- ) |
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' save-c-prefix-line1 is save-c-prefix-line |
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: \c ( "rest-of-line" -- ) \ gforth backslash-c |
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\G One line of C declarations for the C interface |
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-1 parse save-c-prefix-line ; |
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s" #include <gforth/" version-string s+ s" /libcc.h>" append ( c-addr u ) |
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2dup save-c-prefix-line drop free throw |
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\ Types (for parsing) |
\ Types (for parsing) |
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Line 192 drop
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Line 288 drop
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set-current |
set-current |
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: parse-libcc-type ( "libcc-type" -- u ) |
\ call types |
parse-name libcc-types search-wordlist 0= -13 and throw execute ; |
0 |
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const+ c-func |
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const+ c-val |
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const+ c-var |
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drop |
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: libcc-type ( c-addr u -- u2 ) |
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libcc-types search-wordlist 0= -13 and throw execute ; |
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: parse-libcc-type ( "libcc-type" -- u ) parse-name libcc-type ; |
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: 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 ; |
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: parse-function-types ( "{libcc-type}" "--" "libcc-type" -- addr ) |
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c-func c, here |
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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! ; |
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: parse-value-type ( "{--}" "libcc-type" -- addr ) |
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c-val c, here |
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parse-libcc-type dup 0< if drop parse-return-type then |
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c, 0 c, ; |
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: parse-variable-type ( -- addr ) |
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c-var c, here |
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s" a" libcc-type c, 0 c, ; |
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: type-letter ( n -- c ) |
: type-letter ( n -- c ) |
chars s" nadrfv" drop + c@ ; |
chars s" nadrfv" drop + c@ ; |
Line 273 create gen-par-types
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Line 391 create gen-par-types
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\ the call itself |
\ the call itself |
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: 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 |
Line 283 create gen-par-types
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Line 401 create gen-par-types
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loop |
loop |
2drop ." )" ; |
2drop ." )" ; |
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: gen-wrapped-const { d: pars d: c-name fp-change1 sp-change1 -- } |
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." (" c-name type ." )" ; |
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: gen-wrapped-var { d: pars d: c-name fp-change1 sp-change1 -- } |
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." &(" c-name type ." )" ; |
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create gen-call-types |
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' gen-wrapped-func , |
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' gen-wrapped-const , |
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' gen-wrapped-var , |
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: gen-wrapped-call ( pars c-name fp-change1 sp-change1 -- ) |
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5 pick 3 chars - c@ cells gen-call-types + @ execute ; |
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\ calls for various kinds of return values |
\ calls for various kinds of return values |
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: 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 ) |
Line 299 create gen-par-types
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Line 431 create gen-par-types
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." ," gen-par-n ." ," gen-par-n ." )" ; |
." ," gen-par-n ." ," gen-par-n ." )" ; |
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: gen-wrapped-r ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) |
: gen-wrapped-r ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) |
2dup gen-par-r 2>r ." =" gen-wrapped-void 2r> ; |
2dup gen-par-r 2>r ." =" gen-wrapped-call 2r> ; |
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: gen-wrapped-func ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) |
: gen-wrapped-func ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) |
gen-wrapped-a ; |
gen-wrapped-a ; |
Line 333 create gen-wrapped-types
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Line 465 create gen-wrapped-types
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: 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 } |
dup { descriptor } |
c@+ { ret } count 2dup { d: pars } chars + count { d: c-name } |
count { ret } count 2dup { d: pars } chars + count { d: c-name } |
." void " 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 |
Line 346 create gen-wrapped-types
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Line 478 create gen-wrapped-types
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endif |
endif |
.\" }\n" ; |
.\" }\n" ; |
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variable c-source-file-id \ contains the source file id of the current batch |
: scan-back { c-addr u1 c -- c-addr u2 } |
0 c-source-file-id ! |
\ the last occurence of c in c-addr u1 is at u2-1; if it does not |
variable lib-handle-addr \ points to the library handle of the current batch. |
\ occur, u2=0. |
\ the library handle is 0 if the current |
c-addr 1- c-addr u1 + 1- u-do |
\ batch is not yet compiled. |
i c@ c = if |
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c-addr i over - 1+ unloop exit endif |
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1 -loop |
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c-addr 0 ; |
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: dirname ( c-addr1 u1 -- c-addr2 u2 ) |
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\ directory name of the file name c-addr1 u1, including the final "/". |
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'/ scan-back ; |
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: basename ( c-addr1 u1 -- c-addr2 u2 ) |
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\ file name without directory component |
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2dup dirname nip /string ; |
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: gen-filename ( x -- c-addr u ) |
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\ generates a file basename for lib-handle-addr X |
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0 <<# ['] #s $10 base-execute #> |
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s" gforth_c_" 2swap s+ #>> ; |
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: libcc-named-dir ( -- c-addr u ) |
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libcc-named-dir-v 2@ ; |
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: libcc-tmp-dir ( -- c-addr u ) |
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s" ~/.gforth/libcc-tmp/" ; |
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: prepend-dirname ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 ) |
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2over s+ 2swap drop free throw ; |
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: open-wrappers ( -- addr|0 ) |
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lib-filename 2@ s" .la" s+ |
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2dup libcc-named-dir string-prefix? if ( c-addr u ) |
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\ see if we can open it in the path |
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libcc-named-dir nip /string |
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libcc-path open-path-file if |
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0 exit endif |
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( wfile-id c-addr2 u2 ) rot close-file throw save-mem ( c-addr2 u2 ) |
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endif |
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\ 2dup cr type |
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2dup open-lib >r |
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drop free throw r> ; |
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: c-library-name-setup ( c-addr u -- ) |
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assert( c-source-file-id @ 0= ) |
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{ d: filename } |
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here 0 , lib-handle-addr ! filename lib-filename 2! |
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filename basename lib-modulename 2! |
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['] write-c-prefix-line is save-c-prefix-line ; |
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: c-library-name-create ( -- ) |
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lib-filename 2@ s" .c" s+ 2dup w/o create-file throw |
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c-source-file-id ! |
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drop free throw ; |
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: c-named-library-name ( c-addr u -- ) |
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\ set up filenames for a (possibly new) library; c-addr u is the |
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\ basename of the library |
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libcc-named-dir prepend-dirname c-library-name-setup |
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open-wrappers dup if |
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lib-handle-addr @ ! |
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else |
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libcc-named-dir $1ff mkdir-parents drop |
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drop c-library-name-create |
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c-prefix-lines @ ['] print-c-prefix-line \ first line only |
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c-source-file-id @ outfile-execute |
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endif ; |
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: c-tmp-library-name ( c-addr u -- ) |
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\ set up filenames for a new library; c-addr u is the basename of |
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\ the library |
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libcc-tmp-dir 2dup $1ff mkdir-parents drop |
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prepend-dirname c-library-name-setup c-library-name-create |
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['] print-c-prefix-lines c-source-file-id @ outfile-execute ; |
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: lib-handle ( -- addr ) |
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lib-handle-addr @ @ ; |
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: init-c-source-file ( -- ) |
: init-c-source-file ( -- ) |
c-source-file-id @ 0= if |
lib-handle 0= if |
s" xxx.c" w/o create-file throw dup c-source-file-id ! |
c-source-file-id @ 0= if |
['] print-c-prefix-lines swap outfile-execute |
here gen-filename c-tmp-library-name |
here 0 , lib-handle-addr ! |
endif |
endif ; |
endif ; |
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: c-source-file ( -- file-id ) |
: c-source-file ( -- file-id ) |
c-source-file-id @ assert( dup ) ; |
c-source-file-id @ assert( dup ) ; |
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: compile-wrapper-function ( -- ) |
: notype-execute ( ... xt -- ... ) |
c-source-file close-file throw |
what's type { oldtype } try |
0 c-source-file-id ! |
['] 2drop is type execute 0 |
s" gcc -fPIC -shared -Wl,-soname,xxx.so.1 -Wl,-export_dynamic -o xxx.so.1 -O xxx.c" system |
restore |
$? abort" compiler generated error" |
oldtype is type |
s" /home/anton/gforth/xxx.so.1" open-lib dup 0= abort" open-lib failed" |
endtry |
( lib-handle ) lib-handle-addr @ ! ; |
throw ; |
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: c-source-file-execute ( ... xt -- ... ) |
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\ direct the output of xt to c-source-file, or nothing |
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lib-handle if |
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notype-execute |
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else |
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c-source-file outfile-execute |
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endif ; |
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: .lib-error ( -- ) |
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[ifdef] lib-error |
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['] cr stderr outfile-execute |
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lib-error ['] type stderr outfile-execute |
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[then] ; |
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DEFER compile-wrapper-function ( -- ) |
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: compile-wrapper-function1 ( -- ) |
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lib-handle 0= if |
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c-source-file close-file throw |
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0 c-source-file-id ! |
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[ libtool-command s" --silent --tag=CC --mode=compile " s+ |
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libtool-cc append s" -I '" append |
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s" includedir" getenv append s" '" append ] sliteral |
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s" -O -c " s+ lib-filename 2@ append s" .c -o " append |
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lib-filename 2@ append s" .lo" append ( c-addr u ) |
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\ 2dup type cr |
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2dup system drop free throw $? abort" libtool compile failed" |
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[ libtool-command s" --silent --tag=CC --mode=link " s+ |
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libtool-cc append libtool-flags append s" -module -rpath " s+ ] sliteral |
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lib-filename 2@ dirname replace-rpath s+ s" " append |
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lib-filename 2@ append s" .lo -o " append |
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lib-filename 2@ append s" .la" append ( c-addr u ) |
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c-libs 2@ append |
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\ 2dup type cr |
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2dup system drop free throw $? abort" libtool link failed" |
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open-wrappers dup 0= if |
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.lib-error true abort" open-lib failed" |
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endif |
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( lib-handle ) lib-handle-addr @ ! |
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endif |
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lib-filename 2@ drop free throw 0 0 lib-filename 2! ; |
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' compile-wrapper-function1 IS compile-wrapper-function |
\ s" ar rcs xxx.a xxx.o" system |
\ s" ar rcs xxx.a xxx.o" system |
\ $? abort" ar generated error" ; |
\ $? abort" ar generated error" ; |
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: link-wrapper-function { cff -- sym } |
: link-wrapper-function { cff -- sym } |
cff cff-rtype wrapper-function-name { d: wrapper-name } |
cff cff-rtype wrapper-function-name { d: wrapper-name } |
wrapper-name cff cff-lha @ @ assert( dup ) lib-sym dup 0= -&32 and throw |
wrapper-name cff cff-lha @ @ assert( dup ) lib-sym dup 0= if |
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.lib-error -&32 throw |
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endif |
wrapper-name drop free throw ; |
wrapper-name drop free throw ; |
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: 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 |
Line 400 variable lib-handle-addr \ points to the
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Line 649 variable lib-handle-addr \ points to the
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does> ( ... -- ... ) |
does> ( ... -- ... ) |
@ call-c ; |
@ call-c ; |
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: c-function ( "forth-name" "c-name" "{libcc-type}" "--" "libcc-type" -- ) |
: (c-function) ( xt-parse "forth-name" "c-name" "{stack effect}" -- ) |
defer lastxt dup c-function-rt lastxt c-function-ft |
{ xt-parse-types } defer lastxt dup c-function-rt |
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lastxt xt-parse-types c-function-ft |
lastxt swap defer! ; |
lastxt swap defer! ; |
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s" Library not found" exception constant err-nolib |
: c-function ( "forth-name" "c-name" "@{type@}" "---" "type" -- ) \ gforth |
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\G Define a Forth word @i{forth-name}. @i{Forth-name} has the |
: library ( "name" "file" -- ) \ gforth |
\G specified stack effect and calls the C function @code{c-name}. |
\G Dynamically links the library specified by @i{file}. Defines a |
['] parse-function-types (c-function) ; |
\G word @i{name} ( -- lib ) that starts the declaration of a |
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\G function from that library. |
: c-value ( "forth-name" "c-name" "[---]" "type" -- ) \ gforth |
create parse-name open-lib dup 0= err-nolib and throw , |
\G Define a Forth word @i{forth-name}. @i{Forth-name} has the |
does> ( -- lib ) |
\G specified stack effect and gives the C value of @code{c-name}. |
@ ; |
['] parse-value-type (c-function) ; |
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\ test |
: c-variable ( "forth-name" "c-name" -- ) \ gforth |
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\G Define a Forth word @i{forth-name}. @i{Forth-name} returns the |
\ test all parameter and return types |
\G address of @code{c-name}. |
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['] parse-variable-type (c-function) ; |
\ cr .( #include "engine/libcc.h") |
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\ cr .( #include <unistd.h>) |
: clear-libs ( -- ) \ gforth |
\ cr ." typedef void (* func)(int); |
\G Clear the list of libs |
\ cr ." int test1(int,char*,long,double,void (*)(int));" |
c-source-file-id @ if |
\ cr ." Cell *test2(void);" |
compile-wrapper-function |
\ cr ." int test3(void);" |
endif |
\ cr ." float test4(void);" |
0. c-libs 2! ; |
\ cr ." func test5(void);" |
clear-libs |
\ cr ." void test6(void);" |
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\ cr |
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\ c-function dlseek lseek n d n -- d |
: c-library-incomplete ( -- ) |
\ c-function n test1 n a d r func -- n |
true abort" Called function of unfinished named C library" ; |
\ c-function a test2 -- a |
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\ c-function d test3 -- d |
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\ c-function r test4 -- r |
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\ c-function func test5 -- func |
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\ c-function void test6 -- void |
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\c #include <string.h> |
: c-library-name ( c-addr u -- ) \ gforth |
\c #include <stdlib.h> |
\G Start a C library interface with name @i{c-addr u}. |
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clear-libs |
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['] c-library-incomplete is compile-wrapper-function |
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c-named-library-name ; |
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: c-library ( "name" -- ) \ gforth |
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\G Parsing version of @code{c-library-name} |
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parse-name save-mem c-library-name ; |
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: end-c-library ( -- ) \ gforth |
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\G Finish and (if necessary) build the latest C library interface. |
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['] save-c-prefix-line1 is save-c-prefix-line |
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['] compile-wrapper-function1 is compile-wrapper-function |
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compile-wrapper-function1 ; |
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: init-libcc ( -- ) |
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s" ~/.gforth/libcc-named/" libcc-named-dir-v 2! |
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[IFDEF] make-path |
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libcc-path make-path |
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libcc-named-dir libcc-path also-path |
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[ s" libccdir" getenv ] sliteral libcc-path also-path |
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[THEN] |
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; |
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c-function strlen strlen a -- n |
init-libcc |
c-function labs labs n -- n |
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cr s\" fooo\0" 2dup dump drop .s strlen cr .s drop cr |
:noname ( -- ) |
-5 labs .s drop cr |
defers 'cold |
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init-libcc ; |
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is 'cold |