crt1_c.c revision 200038 
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: head/lib/csu/i386-elf/crt1_c.c 200038 2009-12-02 16:34:20Z kib $
27 */
28
29#ifndef lint
30#ifndef __GNUC__
31#error "GCC is needed to compile this file"
32#endif
33#endif /* lint */
34
35#include <stdlib.h>
36
37#include "libc_private.h"
38#include "crtbrand.c"
39
40extern int _DYNAMIC;
41#pragma weak _DYNAMIC
42
43typedef void (*fptr)(void);
44
45extern void _fini(void);
46extern void _init(void);
47extern int main(int, char **, char **);
48extern void _start(char *, ...);
49
50#ifdef GCRT
51extern void _mcleanup(void);
52extern void monstartup(void *, void *);
53extern int eprol;
54extern int etext;
55#endif
56
57char **environ;
58const char *__progname = "";
59
60void _start1(fptr, int, char *[]) __dead2;
61
62/* The entry function, C part. */
63void
64_start1(fptr cleanup, int argc, char *argv[])
65{
66	char **env;
67	const char *s;
68
69	env = argv + argc + 1;
70	environ = env;
71	if (argc > 0 && argv[0] != NULL) {
72		__progname = argv[0];
73		for (s = __progname; *s != '\0'; s++)
74			if (*s == '/')
75				__progname = s + 1;
76	}
77
78	if (&_DYNAMIC != NULL)
79		atexit(cleanup);
80	else
81		_init_tls();
82
83#ifdef GCRT
84	atexit(_mcleanup);
85#endif
86	atexit(_fini);
87#ifdef GCRT
88	monstartup(&eprol, &etext);
89__asm__("eprol:");
90#endif
91	_init();
92	exit( main(argc, argv, env) );
93}
94
95__asm(".hidden	_start1");
96