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Gordon Matzigkeit 1997-07-12 21:39:00 +00:00 committed by Gordon Matzigkeit
parent dd64a9807f
commit 4879b21c30
1 changed files with 81 additions and 0 deletions

81
demo/dlmain.c Normal file

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/* dlmain.c -- hello test program that uses simulated dynamic linking
Copyright (C) 1996 Free Software Foundation, Inc.
This file is part of GNU Libtool.
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 of the License, 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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA. */
#include "foo.h"
#include <stdio.h>
#include <string.h>
struct dld_symlist
{
char *name;
void *address;
};
extern struct dld_symlist dld_preloaded_symbols[];
int
main (int argc, char **argv)
{
struct dld_symlist *s;
int (*pfoo)() = 0;
int (*phello)() = 0;
int *pnothing = 0;
printf ("Welcome to dynamic GNU Hell!\n");
s = dld_preloaded_symbols;
while (s->name)
{
/* FIXME: we are simplistic about leading underscores. */
printf ("found symbol: %s\n", s->name);
if (!strcmp ("hello", s->name))
phello = s->address;
else if (!strcmp ("foo", s->name))
pfoo = s->address;
else if (!strcmp ("nothing", s->name))
pnothing = s->address;
s ++;
}
/* Try assigning to the nothing variable. */
if (pnothing)
*pnothing = 1;
else
fprintf (stderr, "did not find the `nothing' variable\n");
/* Just call the functions and check return values. */
if (pfoo)
{
if ((*pfoo) () != FOO_RET)
return 1;
}
else
fprintf (stderr, "did not find the `foo' function\n");
if (phello)
{
if ((*phello) () != HELLO_RET)
return 2;
}
else
fprintf (stderr, "did not find the `hello' function\n");
return 0;
}