135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
/* $NetBSD: common.c,v 1.4 1999/08/19 20:52:36 kleink Exp $ */
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/*
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* Copyright (c) 1995 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* NOT A STANDALONE FILE!
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*/
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static char *
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_strrchr(p, ch)
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char *p, ch;
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{
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char *save;
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for (save = NULL;; ++p) {
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if (*p == ch)
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save = (char *)p;
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if (!*p)
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return(save);
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}
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/* NOTREACHED */
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}
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#ifdef MCRT0
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asm (" .text");
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asm ("_eprol:");
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#endif
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#ifdef DYNAMIC
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#ifdef __weak_alias
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__weak_alias(dlopen,_dlopen);
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__weak_alias(dlclose,_dlclose);
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__weak_alias(dlsym,_dlsym);
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__weak_alias(dlerror,_dlerror);
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#endif
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void
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_rtld_setup(cleanup, obj)
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void (*cleanup) __P((void));
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const Obj_Entry *obj;
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{
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if ((obj == NULL) || (obj->magic != RTLD_MAGIC))
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_FATAL("Corrupt Obj_Entry pointer in GOT");
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if (obj->version != RTLD_VERSION)
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_FATAL("Dynamic linker version mismatch");
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__mainprog_obj = obj;
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atexit(cleanup);
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}
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void *
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dlopen(name, mode)
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const char *name;
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int mode;
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{
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if (__mainprog_obj == NULL)
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return NULL;
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return (__mainprog_obj->dlopen)(name, mode);
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}
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int
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dlclose(fd)
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void *fd;
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{
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if (__mainprog_obj == NULL)
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return -1;
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return (__mainprog_obj->dlclose)(fd);
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}
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void *
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dlsym(fd, name)
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void *fd;
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const char *name;
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{
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if (__mainprog_obj == NULL)
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return NULL;
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return (__mainprog_obj->dlsym)(fd, name);
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}
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#if 0 /* not supported for ELF shlibs, apparently */
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int
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dlctl(fd, cmd, arg)
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void *fd, *arg;
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int cmd;
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{
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if (__mainprog_obj == NULL)
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return -1;
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return (__mainprog_obj->dlctl)(fd, cmd, arg);
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}
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#endif
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__aconst char *
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dlerror()
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{
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if (__mainprog_obj == NULL)
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return ("Dynamic linker interface not available");
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return (__mainprog_obj->dlerror)();
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}
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#endif /* DYNAMIC */
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