2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
145 lines
3.5 KiB
C
145 lines
3.5 KiB
C
/* $NetBSD: dlfcn_elf.c,v 1.7 2010/10/16 10:27:07 skrll Exp $ */
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/*
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* Copyright (c) 2000 Takuya SHIOZAKI
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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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*
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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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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: dlfcn_elf.c,v 1.7 2010/10/16 10:27:07 skrll Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#undef dlopen
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#undef dlclose
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#undef dlsym
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#undef dlerror
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#undef dladdr
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#undef dfinfo
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#define dlopen ___dlopen
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#define dlclose ___dlclose
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#define dlsym ___dlsym
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#define dlerror ___dlerror
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#define dladdr ___dladdr
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#define dlinfo ___dlinfo
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#define dl_iterate_phdr ___dl_iterate_phdr
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#define ELFSIZE ARCH_ELFSIZE
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#ifdef __minix
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#include <sys/null.h>
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#include <dlfcn.h>
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#else
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#include "rtld.h"
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#endif
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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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__weak_alias(dladdr,___dladdr)
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__weak_alias(dlinfo,___dlinfo)
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__weak_alias(dl_iterate_phdr,___dl_iterate_phdr)
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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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__weak_alias(__dladdr,___dladdr)
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__weak_alias(__dlinfo,___dlinfo)
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__weak_alias(__dl_iterate_phdr,___dl_iterate_phdr)
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#endif
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/*
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* For ELF, the dynamic linker directly resolves references to its
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* services to functions inside the dynamic linker itself. These
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* weak-symbol stubs are necessary so that "ld" won't complain about
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* undefined symbols. The stubs are executed only when the program is
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* linked statically, or when a given service isn't implemented in the
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* dynamic linker. They must return an error if called, and they must
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* be weak symbols so that the dynamic linker can override them.
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*/
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static char dlfcn_error[] = "Service unavailable";
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/*ARGSUSED*/
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void *
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dlopen(const char *name, int mode)
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{
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return NULL;
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}
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/*ARGSUSED*/
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int
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dlclose(void *fd)
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{
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return -1;
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}
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/*ARGSUSED*/
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void *
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dlsym(void *handle, const char *name)
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{
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return NULL;
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}
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/*ARGSUSED*/
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__aconst char *
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dlerror()
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{
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return dlfcn_error;
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}
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/*ARGSUSED*/
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int
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dladdr(const void *addr, Dl_info *dli)
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{
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return 0;
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}
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/*ARGSUSED*/
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int
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dlinfo(void *handle, int req, void *v)
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{
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return -1;
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}
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#ifndef __minix
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/*ARGSUSED*/
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int
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dl_iterate_phdr(int (*callback)(struct dl_phdr_info *, size_t, void *),
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void *data)
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{
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return 0;
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}
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#endif
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