diff options
Diffstat (limited to 'libguile/dynl-dld.c')
-rw-r--r-- | libguile/dynl-dld.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/libguile/dynl-dld.c b/libguile/dynl-dld.c new file mode 100644 index 000000000..64fda4d3f --- /dev/null +++ b/libguile/dynl-dld.c @@ -0,0 +1,128 @@ +/* dynl-dld.c - dynamic linking with dld + * + * Copyright (C) 1990-1997 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 + Modified for libguile by Marius Vollmer */ + +#include "dld.h" + +static void listundef SCM_P ((void)); + +static void +listundefs () +{ + int i; + char **undefs = dld_list_undefined_sym(); + puts(" undefs:"); + for(i = dld_undefined_sym_count;i--;) { + putc('"', stdout); + fputs(undefs[i], stdout); + puts("\""); + } + free(undefs); +} + +static void * +sysdep_dynl_link (fname, subr) + char *fname; + char *subr; +{ + int status; + + status = dld_link (fname); + if (status) + scm_misc_error (subr, dld_strerror (status), SCM_EOL); + return fname; +} + +static void +sysdep_dynl_unlink (handle, subr) + void *handle; + char *subr; +{ + int status; + + SCM_DEFER_INTS; + status = dld_unlink_by_file ((char *)fname, 1); + SCM_ALLOW_INTS; + if (status) + scm_misc_error (s_dynamic_unlink, dld_strerror (status), SCM_EOL); +} + +static void * +sysdep_dynl_func (symb, handle, subr) + char *symb; + void *handle; + char *subr; +{ + void *func; + + SCM_DEFER_INTS; + func = (void *) dld_get_func (func); + if (func == 0) + scm_misc_error (subr, dld_strerror (dld_errno), SCM_EOL); + if (!dld_function_executable_p (func)) { + listundefs (); + scm_misc_error (subr, "unresolved symbols remain", SCM_EOL); + } + SCM_ALLOW_INTS; + return func; +} + +static void +sysdep_dynl_init () +{ +#ifndef RTL + if (!execpath) + execpath = dld_find_executable (SCM_CHARS (SCM_CAR (progargs))); + if (dld_init (SCM_CHARS (SCM_CAR (progargs)))) { + dld_perror("DLD"); + return; + } +#endif + +#ifdef DLD_DYNCM /* XXX - what's this? */ + add_feature("dld:dyncm"); +#endif +} |