crt1_c.c revision 225736 
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 * $FreeBSD: stable/9/lib/csu/i386-elf/crt1_c.c 216338 2010-12-09 21:31:21Z dim $
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/9/lib/csu/i386-elf/crt1_c.c 216338 2010-12-09 21:31:21Z dim $");
31
32#ifndef lint
33#ifndef __GNUC__
34#error "GCC is needed to compile this file"
35#endif
36#endif /* lint */
37
38#include <stdlib.h>
39
40#include "libc_private.h"
41#include "crtbrand.c"
42
43extern int _DYNAMIC;
44#pragma weak _DYNAMIC
45
46typedef void (*fptr)(void);
47
48extern void _fini(void);
49extern void _init(void);
50extern int main(int, char **, char **);
51extern void _start(char *, ...);
52
53#ifdef GCRT
54extern void _mcleanup(void);
55extern void monstartup(void *, void *);
56extern int eprol;
57extern int etext;
58#endif
59
60char **environ;
61const char *__progname = "";
62
63void _start1(fptr, int, char *[]) __dead2;
64
65/* The entry function, C part. */
66void
67_start1(fptr cleanup, int argc, char *argv[])
68{
69	char **env;
70	const char *s;
71
72	env = argv + argc + 1;
73	environ = env;
74	if (argc > 0 && argv[0] != NULL) {
75		__progname = argv[0];
76		for (s = __progname; *s != '\0'; s++)
77			if (*s == '/')
78				__progname = s + 1;
79	}
80
81	if (&_DYNAMIC != NULL)
82		atexit(cleanup);
83	else
84		_init_tls();
85
86#ifdef GCRT
87	atexit(_mcleanup);
88#endif
89	atexit(_fini);
90#ifdef GCRT
91	monstartup(&eprol, &etext);
92__asm__("eprol:");
93#endif
94	_init();
95	exit( main(argc, argv, env) );
96}
97
98__asm(".hidden	_start1");
99