crt1.c revision 331722 
1/* LINTLIBRARY */
2/*-
3 * Copyright 1996-1998 John D. Polstra.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/lib/csu/amd64/crt1.c 331722 2018-03-29 02:50:57Z eadler $");
29
30#include <stdlib.h>
31
32#include "libc_private.h"
33#include "crtbrand.c"
34#include "ignore_init.c"
35
36typedef void (*fptr)(void);
37
38#ifdef GCRT
39extern void _mcleanup(void);
40extern void monstartup(void *, void *);
41extern int eprol;
42extern int etext;
43#endif
44
45void _start(char **, void (*)(void));
46
47/* The entry function. */
48void
49_start(char **ap, void (*cleanup)(void))
50{
51	int argc;
52	char **argv;
53	char **env;
54
55	argc = *(long *)(void *)ap;
56	argv = ap + 1;
57	env = ap + 2 + argc;
58	handle_argv(argc, argv, env);
59
60	if (&_DYNAMIC != NULL)
61		atexit(cleanup);
62	else
63		_init_tls();
64
65#ifdef GCRT
66	atexit(_mcleanup);
67	monstartup(&eprol, &etext);
68__asm__("eprol:");
69#endif
70
71	handle_static_init(argc, argv, env);
72	exit(main(argc, argv, env));
73}
74