version 1.5, 2006/12/28 20:53:04
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version 1.77, 2012/08/16 20:26:11
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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) 2006,2007,2008,2009,2010,2011 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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\ \ something that tells it to include <unistd.h> |
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\ \ something that tells it that the current library is libc |
\ \ something that tells it that the current library is libc |
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\ \c #include <unistd.h> |
\ c-function dlseek lseek n d n -- d |
\ c-function dlseek lseek n d n -- d |
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\ it genererates C code similar to the following: |
\ it genererates C code similar to the following: |
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\ the function pointer of gforth_c_lseek_ndn_d on the stack and |
\ the function pointer of gforth_c_lseek_ndn_d on the stack and |
\ calls CALL-C. |
\ calls CALL-C. |
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\ other things to do: |
\ ToDo: |
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\ Batching, caching and lazy evaluation: |
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\ Batching: |
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\ New words are deferred, and the corresponding C functions are |
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\ collected in one file, until the first word is EXECUTEd; then the |
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\ file is compiled and linked into the system, and the word is |
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\ resolved. |
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\ Caching: |
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\ Instead of compiling all this stuff anew for every execution, we |
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\ keep the files around and have an index file containing the function |
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\ names and their corresponding .so files. If the needed wrapper name |
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\ is already present, it is just linked instead of generating the |
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\ wrapper again. This is all done by loading the index file(s?), |
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\ which define words for the wrappers in a separate wordlist. |
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\ The files are built in .../lib/gforth$ARCH/$VERSION/libcc/ or |
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\ ~/.gforth$ARCH/libcc/$HOST/. |
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\ c-variable forth-name c-name |
\ Todo: conversion between function pointers and xts (both directions) |
\ c-constant forth-name c-name |
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\ taking an xt and turning it into a function pointer: |
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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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\ c-function word body: |
\ For every c-function, we have three words: two anonymous words |
\ cell function pointer |
\ created by c-function-ft (first time) and c-function-rt (run-time), |
\ char return type index |
\ and a named deferred word. The deferred word first points to the |
\ char parameter count n |
\ first-time word, then to the run-time word; the run-time word calls |
\ char*n parameters (type indices) |
\ the c function. |
\ counted string: c-name |
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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 |
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require mkdir.fs |
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\ c-function-ft word body: |
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struct |
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cell% field cff-cfr \ xt of c-function-rt word |
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cell% field cff-deferred \ xt of c-function deferred word |
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cell% field cff-lha \ address of the lib-handle for the lib that |
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\ contains the wrapper function of the word |
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char% field cff-ctype \ call type (function=1, value=0) |
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char% field cff-rtype \ return type |
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char% field cff-np \ number of parameters |
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1 0 field cff-ptypes \ #npar parameter types |
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\ counted string: c-name |
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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 ; |
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: const+ ( n1 "name" -- n2 ) |
: const+ ( n1 "name" -- n2 ) |
dup constant 1+ ; |
dup constant 1+ ; |
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\ dlerror |
: front-string { c-addr1 u1 c-addr2 u2 -- c-addr3 u3 } |
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\ insert string c-addr2 u2 in buffer c-addr1 u1; c-addr3 u3 is the |
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\ remainder of the buffer. |
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assert( u1 u2 u>= ) |
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c-addr2 c-addr1 u2 move |
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c-addr1 u1 u2 /string ; |
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: front-char { c-addr1 u1 c -- c-addr3 u2 } |
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\ insert c in buffer c-addr1 u1; c-addr3 u3 is the remainder of |
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\ the buffer. |
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assert( u1 0 u> ) |
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c c-addr1 c! |
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c-addr1 u1 1 /string ; |
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: 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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\ linked list stuff (should go elsewhere) |
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struct |
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cell% field list-next |
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1 0 field list-payload |
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end-struct list% |
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: list-insert { node list -- } |
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list list-next @ node list-next ! |
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node list list-next ! ; |
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: list-append { node endlistp -- } |
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\ insert node at place pointed to by endlistp |
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node endlistp @ list-insert |
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node list-next endlistp ! ; |
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: list-map ( ... list xt -- ... ) |
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\ xt ( ... node -- ... ) |
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{ xt } begin { node } |
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node while |
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node xt execute |
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node list-next @ |
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repeat ; |
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2variable c-libs \ library names in a string (without "lib") |
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: lib-prefix ( -- addr u ) s" libgf" ; |
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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 |
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\ linked list of longcstrings: [ link | count-cell | characters ] |
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list% |
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cell% field c-prefix-count |
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1 0 field c-prefix-chars |
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end-struct c-prefix% |
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variable c-prefix-lines 0 c-prefix-lines ! |
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variable c-prefix-lines-end c-prefix-lines c-prefix-lines-end ! |
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: print-c-prefix-line ( node -- ) |
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dup c-prefix-chars swap c-prefix-count @ type cr ; |
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: print-c-prefix-lines ( -- ) |
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c-prefix-lines @ ['] print-c-prefix-line list-map ; |
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: 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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\ require lib.fs |
s" #include <gforth" arch-modifier s+ s" /" append version-string append s" /libcc.h>" append ( c-addr u ) |
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2dup save-c-prefix-line drop free throw |
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\ library libc libc.so.6 |
\ Types (for parsing) |
\ libc sleep int (int) sleep |
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\ libc dlerror (ptr) dlerror |
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wordlist constant libcc-types |
wordlist constant libcc-types |
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Line 92 drop
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Line 290 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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0 Value is-funptr? |
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: parse-funptr-types ( "{libcc-type}" "--" "libcc-type" -- addr ) |
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true to is-funptr? parse-function-types ; |
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: type-letter ( n -- c ) |
: type-letter ( n -- c ) |
chars s" nadrfv" drop + c@ ; |
chars s" nadrfv" drop + c@ ; |
Line 173 create gen-par-types
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Line 397 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 183 create gen-par-types
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Line 407 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 199 create gen-par-types
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Line 437 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 215 create gen-wrapped-types
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Line 453 create gen-wrapped-types
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: gen-wrapped-stmt ( pars c-name fp-change1 sp-change1 ret -- fp-change sp-change ) |
: gen-wrapped-stmt ( pars c-name fp-change1 sp-change1 ret -- fp-change sp-change ) |
cells gen-wrapped-types + @ execute ; |
cells gen-wrapped-types + @ execute ; |
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: gen-wrapper-function ( addr -- ) |
: sanitize ( addr u -- ) |
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bounds ?DO |
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I c@ |
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dup 'a' 'z' 1+ within |
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over 'A' 'Z' 1+ within or |
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over '0' '9' 1+ within or |
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swap '_' = or 0= IF '_' I c! THEN |
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LOOP ; |
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: wrapper-function-name ( addr -- c-addr u ) |
\ addr points to the return type index of a c-function descriptor |
\ addr points to the return type index of a c-function descriptor |
c@+ { ret } count 2dup { d: pars } chars + count { d: c-name } |
count { r-type } count { d: pars } |
.\" #include \"engine/libcc.h\"\n" |
pars + count { d: c-name } |
." void gforth_c_" c-name type ." _" |
s" gforth_c_" { d: prefix } |
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prefix nip c-name nip + pars nip + 3 + { u } |
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u allocate throw { c-addr } |
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c-addr u |
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prefix front-string c-name front-string '_ front-char |
pars bounds u+do |
pars bounds u+do |
i c@ type-letter emit |
i c@ type-letter front-char |
loop |
loop |
." _" ret type-letter emit .\" (void)\n" |
'_ front-char r-type type-letter front-char assert( dup 0= ) |
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2drop c-addr u 2dup sanitize ; |
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: gen-wrapper-function ( addr -- ) |
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\ addr points to the return type index of a c-function descriptor |
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dup { descriptor } |
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count { ret } count 2dup { d: pars } chars + count { d: c-name } |
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." void " |
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[ lib-suffix s" .la" str= [IF] ] lib-prefix type lib-modulename 2@ type ." _LTX_" [ [THEN] ] |
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descriptor wrapper-function-name 2dup type drop free throw |
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.\" (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 " |
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is-funptr? IF .\" Cell ptr = *sp++;\n " 0 to is-funptr? THEN |
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 |
." gforth_SP = sp+" .nb .\" ;\n" |
." gforth_SP = sp+" .nb .\" ;\n" |
Line 234 create gen-wrapped-types
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Line 496 create gen-wrapped-types
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endif |
endif |
.\" }\n" ; |
.\" }\n" ; |
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: compile-wrapper-function ( -- ) |
: scan-back { c-addr u1 c -- c-addr u2 } |
s" gcc -fPIC -shared -Wl,-soname,xxx.so.1 -Wl,-export_dynamic -o xxx.so.1 -O xxx.c" system |
\ the last occurence of c in c-addr u1 is at u2-1; if it does not |
$? abort" compiler generated error" ; |
\ occur, u2=0. |
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c-addr 1- c-addr u1 + 1- u-do |
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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" arch-modifier s+ s" /libcc-tmp/" s+ ; |
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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@ dirname lib-prefix s+ |
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lib-filename 2@ basename append lib-suffix append |
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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 ) |
|
lib-handle-addr @ @ ; |
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: init-c-source-file ( -- ) |
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lib-handle 0= if |
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c-source-file-id @ 0= if |
|
here gen-filename c-tmp-library-name |
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endif |
|
endif ; |
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|
: c-source-file ( -- file-id ) |
|
c-source-file-id @ assert( dup ) ; |
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: notype-execute ( ... xt -- ... ) |
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what's type { oldtype } try |
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['] 2drop is type execute 0 |
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restore |
|
oldtype is type |
|
endtry |
|
throw ; |
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|
|
: c-source-file-execute ( ... xt -- ... ) |
|
\ direct the output of xt to c-source-file, or nothing |
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lib-handle if |
|
notype-execute |
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else |
|
c-source-file outfile-execute |
|
endif ; |
|
|
|
: .lib-error ( -- ) |
|
[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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|
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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 |
|
0 c-source-file-id ! |
|
[ libtool-command s" --silent --tag=CC --mode=compile " s+ |
|
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 |
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lib-filename 2@ append s" .lo" append ( c-addr u ) |
|
\ 2dup type cr |
|
2dup system drop free throw $? abort" libtool compile failed" |
|
[ libtool-command s" --silent --tag=CC --mode=link " s+ |
|
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@ dirname append lib-prefix append |
|
lib-filename 2@ basename append s" .la" append ( c-addr u ) |
|
c-libs 2@ append |
|
\ 2dup type cr |
|
2dup system drop free throw $? abort" libtool link failed" |
|
open-wrappers dup 0= if |
|
.lib-error true abort" open-lib failed" |
|
endif |
|
( lib-handle ) lib-handle-addr @ ! |
|
endif |
|
lib-filename 2@ drop free throw 0 0 lib-filename 2! ; |
|
' 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" ; |
|
|
: link-wrapper-function ( -- ) |
: link-wrapper-function { cff -- sym } |
s" /home/anton/gforth/xxx.so.1" open-lib ( lib-handle ) |
cff cff-rtype wrapper-function-name { d: wrapper-name } |
s" gforth_c_strlen_a_n" rot lib-sym dup 0= -32 and throw ; |
wrapper-name cff cff-lha @ @ assert( dup ) lib-sym dup 0= if |
|
.lib-error -&32 throw |
|
endif |
|
wrapper-name drop free throw ; |
|
|
: c-function ( "forth-name" "c-name" "{libcc-type}" "--" "libcc-type" -- ) |
: c-function-ft ( xt-defr xt-cfr xt-parse "c-name" "type signature" -- ) |
create here >r 0 , \ place for the wrapper function pointer |
\ build time/first time action for c-function |
|
{ xt-parse-types } init-c-source-file |
|
noname create 2, lib-handle-addr @ , |
parse-name { d: c-name } |
parse-name { d: c-name } |
parse-function-types c-name string, |
xt-parse-types execute c-name string, |
r@ cell+ |
['] gen-wrapper-function c-source-file-execute |
s" xxx.c" w/o create-file throw ( file-id ) |
does> ( ... -- ... ) |
dup >r >outfile gen-wrapper-function outfile< |
dup 2@ { xt-defer xt-cfr } |
r> close-file throw |
dup cff-lha @ @ 0= if |
compile-wrapper-function |
compile-wrapper-function |
link-wrapper-function |
endif |
r> ! |
link-wrapper-function xt-cfr >body ! |
|
xt-cfr xt-defer defer! |
|
xt-cfr execute ; |
|
|
|
: c-function-rt ( -- ) |
|
\ run-time definition for c function; addr is the address where |
|
\ the sym should be stored |
|
noname create 0 , |
does> ( ... -- ... ) |
does> ( ... -- ... ) |
@ call-c ; |
@ call-c ; |
|
|
|
: (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 specified stack effect and calls the C function @code{c-name}. |
|
['] parse-function-types (c-function) ; |
|
|
|
: 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) ; |
|
|
|
: c-funptr ( "forth-name" "c-typecast" "@{type@}" "---" "type" -- ) \ gforth |
|
\G Define a Forth word @i{forth-name}. @i{Forth-name} has the |
|
\G specified stack effect and calls the C function pointer |
|
\G ptr using the typecast or struct access @code{c-typecast}. |
|
['] parse-funptr-types (c-function) ; |
|
|
|
: clear-libs ( -- ) \ gforth |
|
\G Clear the list of libs |
|
c-source-file-id @ if |
|
compile-wrapper-function |
|
endif |
|
0. c-libs 2! ; |
|
clear-libs |
|
|
|
: c-library-incomplete ( -- ) |
|
true abort" Called function of unfinished named C library" ; |
|
|
|
: c-library-name ( c-addr u -- ) \ gforth |
|
\G Start a C library interface with name @i{c-addr u}. |
|
clear-libs |
|
['] c-library-incomplete is compile-wrapper-function |
|
c-named-library-name ; |
|
|
|
: c-library ( "name" -- ) \ gforth |
|
\G Parsing version of @code{c-library-name} |
|
parse-name save-mem c-library-name ; |
|
|
|
: 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 ; |
|
|
|
: init-libcc ( -- ) |
|
s" ~/.gforth" arch-modifier s+ s" /libcc-named/" s+ 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 |
|
|
s" Library not found" exception constant err-nolib |
:noname ( -- ) |
|
defers 'cold |
: library ( "name" "file" -- ) \ gforth |
init-libcc ; |
\G Dynamically links the library specified by @i{file}. Defines a |
is 'cold |
\G word @i{name} ( -- lib ) that starts the declaration of a |
|
\G function from that library. |
|
create parse-name open-lib dup 0= err-nolib and throw , |
|
does> ( -- lib ) |
|
@ ; |
|
|
|
\ test |
|
|
|
\ test all parameter and return types |
|
|
|
\ cr .( #include "engine/libcc.h") |
|
\ cr .( #include <unistd.h>) |
|
\ cr ." typedef void (* func)(int); |
|
\ cr ." int test1(int,char*,long,double,void (*)(int));" |
|
\ cr ." Cell *test2(void);" |
|
\ cr ." int test3(void);" |
|
\ cr ." float test4(void);" |
|
\ cr ." func test5(void);" |
|
\ cr ." void test6(void);" |
|
\ cr |
|
|
|
\ c-function dlseek lseek n d n -- d |
|
\ c-function n test1 n a d r func -- n |
|
\ c-function a test2 -- a |
|
\ c-function d test3 -- d |
|
\ c-function r test4 -- r |
|
\ c-function func test5 -- func |
|
\ c-function void test6 -- void |
|
|
|
c-function strlen strlen a -- n |
|
|
|
cr s\" fooo\0" 2dup dump drop .s strlen cr .s cr |
|