120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
/* $OpenBSD: crt0.c,v 1.18 2023/07/27 18:17:14 kettenis 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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#include <sys/syscall.h>
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#include <stdlib.h>
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#include <limits.h>
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#include "md_init.h"
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#ifdef RCRT0
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# include BOOT_H
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#endif
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#include "extern.h"
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#define STR(x) __STRING(x) /* shorter macro name for MD_RCRT0_START */
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/* some defaults */
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#ifndef MD_START_ARGS
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#define MD_START_ARGS \
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int argc, char **argv, char **envp, void (*cleanup)(void)
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#endif
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static void ___start(MD_START_ARGS) __used;
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#ifndef MD_EPROL_LABEL
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#define MD_EPROL_LABEL __asm(" .text\n_eprol:")
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#endif
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#ifndef RCRT0_RELRO
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#define RCRT0_RELRO() do {} while (0)
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#endif
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char ***_csu_finish(char **_argv, char **_envp, void (*_cleanup)(void));
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#ifdef MCRT0
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#include <sys/gmon.h>
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extern __dso_hidden unsigned char _etext, _eprol;
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#endif /* MCRT0 */
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#ifdef RCRT0
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#ifdef MD_RCRT0_START
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MD_RCRT0_START;
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#endif
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#else
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#ifdef MD_CRT0_START
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MD_CRT0_START;
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#endif
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#endif
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extern __dso_hidden initarray_f __preinit_array_start[],
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__preinit_array_end[], __init_array_start[], __init_array_end[];
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extern char __csu_do_fini_array __dso_hidden;
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static void
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___start(MD_START_ARGS)
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{
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size_t size, i;
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char ***environp;
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#ifdef MD_START_SETUP
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MD_START_SETUP
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#endif
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environp = _csu_finish(argv, envp, cleanup);
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#ifndef RCRT0
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if (cleanup == NULL) {
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#endif
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size = __preinit_array_end - __preinit_array_start;
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for (i = 0; i < size; i++)
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__preinit_array_start[i](argc, argv, envp, NULL);
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RCRT0_RELRO();
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size = __init_array_end - __init_array_start;
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for (i = 0; i < size; i++)
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__init_array_start[i](argc, argv, envp, NULL);
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__csu_do_fini_array = 1;
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#ifndef RCRT0
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}
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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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__init();
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exit(main(argc, argv, *environp));
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}
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#ifdef MCRT0
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MD_EPROL_LABEL;
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#endif
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