2 * Written 3/1/94, Robert Sanders <Robert.Sanders@linux.org>
4 * based upon the file "dl.c", which is
5 * Copyright (c) 1994, Larry Wall
7 * You may distribute under the terms of either the GNU General Public
8 * License or the Artistic License, as specified in the README file.
10 * $Date: 1994/03/07 00:21:43 $
11 * $Source: /home/rsanders/src/perl5alpha6/RCS/dld_dl.c,v $
16 * Removed implicit link against libc. 1994/09/14 William Setzer.
18 * Integrated other DynaLoader changes. 1994/06/08 Tim Bunce.
20 * rewrote dl_load_file, misc updates. 1994/09/03 William Setzer.
22 * Revision 1.4 1994/03/07 00:21:43 rsanders
23 * added min symbol count for load_libs and switched order so system libs
24 * are loaded after app-specified libs.
26 * Revision 1.3 1994/03/05 01:17:26 rsanders
27 * added path searching.
29 * Revision 1.2 1994/03/05 00:52:39 rsanders
30 * added package-specified libraries.
32 * Revision 1.1 1994/03/05 00:33:40 rsanders
42 #include <dld.h> /* GNU DLD header file */
45 #include "dlutils.c" /* for SaveError() etc */
51 dl_generic_private_init();
53 dlderr = dld_init("/proc/self/exe");
56 dlderr = dld_init(dld_find_executable(origargv[0]));
58 char *msg = dld_strerror(dlderr);
59 SaveError("dld_init(%s) failed: %s", origargv[0], msg);
60 DLDEBUG(1,fprintf(stderr,"%s", LastError));
68 MODULE = DynaLoader PACKAGE = DynaLoader
71 (void)dl_private_init();
75 dl_load_file(filename)
82 DLDEBUG(1,fprintf(stderr,"dl_load_file(%s)\n", filename));
83 gv = gv_fetchpv("DynaLoader::dl_require_symbols", FALSE, SVt_PVAV);
87 for (x = 0; x <= max; x++) {
88 char *sym = SvPVX(*av_fetch(av, x, 0));
89 DLDEBUG(1,fprintf(stderr, "dld_create_ref(%s)\n", sym));
90 if (dlderr = dld_create_reference(sym)) {
91 SaveError("dld_create_reference(%s): %s", sym,
92 dld_strerror(dlderr));
97 DLDEBUG(1,fprintf(stderr, "dld_link(%s)\n", filename));
98 if (dlderr = dld_link(filename)) {
99 SaveError("dld_link(%s): %s", filename, dld_strerror(dlderr));
102 gv = gv_fetchpv("DynaLoader::dl_resolve_using", FALSE, SVt_PVAV);
106 for (x = 0; x <= max; x++) {
107 char *sym = SvPVX(*av_fetch(av, x, 0));
108 DLDEBUG(1,fprintf(stderr, "dld_link(%s)\n", sym));
109 if (dlderr = dld_link(sym)) {
110 SaveError("dld_link(%s): %s", sym, dld_strerror(dlderr));
115 DLDEBUG(2,fprintf(stderr,"libref=%s\n", RETVAL));
117 ST(0) = sv_newmortal() ;
119 sv_setiv(ST(0), (IV)RETVAL);
123 dl_find_symbol(libhandle, symbolname)
127 DLDEBUG(2,fprintf(stderr,"dl_find_symbol(handle=%x, symbol=%s)\n",
128 libhandle, symbolname));
129 RETVAL = (void *)dld_get_func(symbolname);
130 /* if RETVAL==NULL we should try looking for a non-function symbol */
131 DLDEBUG(2,fprintf(stderr," symbolref = %x\n", RETVAL));
132 ST(0) = sv_newmortal() ;
134 SaveError("dl_find_symbol: Unable to find '%s' symbol", symbolname) ;
136 sv_setiv(ST(0), (IV)RETVAL);
142 if (dld_undefined_sym_count) {
144 char **undef_syms = dld_list_undefined_sym();
145 EXTEND(sp, dld_undefined_sym_count);
146 for (x=0; x < dld_undefined_sym_count; x++)
147 PUSHs(sv_2mortal(newSVpv(undef_syms[x]+1, 0)));
153 # These functions should not need changing on any platform:
156 dl_install_xsub(perl_name, symref, filename="$Package")
161 DLDEBUG(2,fprintf(stderr,"dl_install_xsub(name=%s, symref=%x)\n",
163 ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)())symref, filename)));