114 lines
3.6 KiB
C
114 lines
3.6 KiB
C
/* $NetBSD: crt0.c,v 1.4 2003/04/01 10:20:38 scw Exp $ */
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/*
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* Copyright 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Steve C. Woodford for Wasabi Systems, Inc.
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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 NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "common.h"
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/*
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* SH5 needs no assembler trampoline for __start as the kernel sets up
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* all the necessary parameters.
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*/
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void __start(int argc, char **argv, char **envp, void (*cleanup)(void),
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const Obj_Entry *obj, struct ps_strings *ps_strings);
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/*
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* The SuperH SH5 linker has a bug which causes statically linked binaries
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* to SEGV in crt0.o due to bogus SHmedia GOT offsets. (crt0.o is always
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* compiled PIC).
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*
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* The following gross hack works around it for now (at the expense of
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* a few more runtime relocations in dynamically linked binaries).
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*/
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static int (*hack_atexit)(void (*)(void)) = atexit;
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#define atexit hack_atexit
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static void (*hack__init)(void) = _init;
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#define _init hack__init
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static void (*hack__fini)(void) = _fini;
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#define _fini hack__fini
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static void (*hack_exit)(int) = exit;
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#define exit hack_exit
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static int (*hack_main)(int, char **, char **) = main;
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#define main hack_main
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#ifdef MCRT0
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static void (*hack_monstartup)(u_long, u_long) = monstartup;
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#define monstartup hack_monstartup
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#endif
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void
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__start(int argc, char **argv, char **envp, void (*cleanup)(void),
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const Obj_Entry *obj, struct ps_strings *ps_strings)
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{
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char *pn;
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environ = envp;
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if ((pn = argv[0]) != NULL) {
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if ((pn = _strrchr(argv[0], '/')) == NULL)
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pn = argv[0];
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else
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pn++;
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}
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__progname = pn;
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if (ps_strings)
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__ps_strings = ps_strings;
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#ifdef DYNAMIC
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if (&_DYNAMIC != NULL)
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_rtld_setup(cleanup, obj);
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#endif
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#ifdef MCRT0
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atexit(_mcleanup);
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monstartup((u_long)&_eprol, (u_long)&_etext);
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#endif
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atexit(_fini);
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_init();
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exit(main(argc, argv, environ));
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}
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/*
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* NOTE: Leave the RCS ID _after_ _start(), in case it gets placed in .text.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: crt0.c,v 1.4 2003/04/01 10:20:38 scw Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include "common.c"
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