d900731978
Previously dlsym resolved to the version in crt0.o or libc which would mean that the caller's shared object couldn't be determined correctly using __builtin_return_address(0). Mainly from FreeBSD, but adapted by me. Benefits of this solutions are: - backward comptibility maintained - existing broken binaries are fixed with a new ld.elf_so - __mainprog_obj can be removed from crt0.o - we do the same thing as FreeBSD Fixes PR 22067. OKed by Jason and Christos.
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/* $NetBSD: common.c,v 1.13 2003/08/12 09:18:42 skrll 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 for the
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* NetBSD Project. See http://www.NetBSD.org/ for
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* information about NetBSD.
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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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* <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
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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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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\n");
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if (obj->version != RTLD_VERSION)
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_FATAL("Dynamic linker version mismatch\n");
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atexit(cleanup);
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}
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#endif /* DYNAMIC */
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