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author | Marius Vollmer <mvo@zagadka.de> | 1996-12-08 16:52:38 +0000 |
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committer | Marius Vollmer <mvo@zagadka.de> | 1996-12-08 16:52:38 +0000 |
commit | 1edae07624597d3a545e95d2090b2137f0304e81 (patch) | |
tree | e7f8c1f5b75af9224e0bec401213c7c9393d87f6 /libguile/dynl-vms.c | |
parent | 708ac61f7788574a14ff5de253ab0087f8531d81 (diff) | |
download | guile-1edae07624597d3a545e95d2090b2137f0304e81.tar.gz |
Initial revision
Diffstat (limited to 'libguile/dynl-vms.c')
-rw-r--r-- | libguile/dynl-vms.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/libguile/dynl-vms.c b/libguile/dynl-vms.c new file mode 100644 index 000000000..322839cbc --- /dev/null +++ b/libguile/dynl-vms.c @@ -0,0 +1,106 @@ +/* dynl-vms.c - dynamic linking for VMS, not yet ported + * + * Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * As a special exception, the Free Software Foundation gives permission + * for additional uses of the text contained in its release of GUILE. + * + * The exception is that, if you link the GUILE library with other files + * to produce an executable, this does not by itself cause the + * resulting executable to be covered by the GNU General Public License. + * Your use of that executable is in no way restricted on account of + * linking the GUILE library code into it. + * + * This exception does not however invalidate any other reasons why + * the executable file might be covered by the GNU General Public License. + * + * This exception applies only to the code released by the + * Free Software Foundation under the name GUILE. If you copy + * code from other Free Software Foundation releases into a copy of + * GUILE, as the General Public License permits, the exception does + * not apply to the code that you add in this way. To avoid misleading + * anyone as to the status of such modified files, you must delete + * this exception notice from them. + * + * If you write modifications of your own for GUILE, it is your choice + * whether to permit this exception to apply to your modifications. + * If you do not wish that, delete this exception notice. + */ + +/* "dynl.c" dynamically link&load object files. + Author: Aubrey Jaffer + (Not yet) modified for libguile by Marius Vollmer */ + +/* We should try to implement dynamic-link/dynamic-call for VMS, + too. */ + +#include "_scm.h" + +/* This permits dynamic linking. For example, the procedure of 0 arguments + from a file could be the initialization procedure. + (vms:dynamic-link-call "MYDISK:[MYDIR].EXE" "foo" "INIT_FOO") + The first argument specifies the directory where the file specified + by the second argument resides. The current directory would be + "SYS$DISK:[].EXE". + The second argument cannot contain any punctuation. + The third argument probably needs to be uppercased to mimic the VMS linker. + */ + +# include <descrip.h> +# include <ssdef.h> +# include <rmsdef.h> + +struct dsc$descriptor *descriptorize(x, buff) + struct dsc$descriptor *x; + SCM buff; +{(*x).dsc$w_length = LENGTH(buff); + (*x).dsc$a_pointer = CHARS(buff); + (*x).dsc$b_class = DSC$K_CLASS_S; + (*x).dsc$b_dtype = DSC$K_DTYPE_T; + return(x);} + +static char s_dynl[] = "vms:dynamic-link-call"; +SCM dynl(dir, symbol, fname) + SCM dir, symbol, fname; +{ + struct dsc$descriptor fnamed, symbold, dird; + void (*fcn)(); + long retval; + ASSERT(IMP(dir) || STRINGP(dir), dir, ARG1, s_dynl); + ASSERT(NIMP(fname) && STRINGP(fname), fname, ARG2, s_dynl); + ASSERT(NIMP(symbol) && STRINGP(symbol), symbol, ARG3, s_dynl); + descriptorize(&fnamed, fname); + descriptorize(&symbold, symbol); + DEFER_INTS; + retval = lib$find_image_symbol(&fnamed, &symbold, &fcn, + IMP(dir) ? 0 : descriptorize(&dird, dir)); + if (SS$_NORMAL != retval) { + /* wta(MAKINUM(retval), "vms error", s_dynl); */ + ALLOW_INTS; + return BOOL_F; + } + ALLOW_INTS; +/* *loc_loadpath = dir; */ + (*fcn)(); +/* *loc_loadpath = oloadpath; */ + return BOOL_T; +} + +void init_dynl() +{ + make_subr(s_dynl, tc7_subr_3, dynl); +} |