xref: /freebsd/lib/csu/i386/crt1_c.c (revision f4b37ed0f8b307b1f3f0f630ca725d68f1dff30d)
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  * $FreeBSD$
27  */
28 
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
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 #include "ignore_init.c"
43 
44 typedef void (*fptr)(void);
45 
46 extern void _start(char *, ...);
47 
48 #ifdef GCRT
49 extern void _mcleanup(void);
50 extern void monstartup(void *, void *);
51 extern int eprol;
52 extern int etext;
53 #endif
54 
55 void _start1(fptr, int, char *[]) __dead2;
56 
57 /* The entry function, C part. */
58 void
59 _start1(fptr cleanup, int argc, char *argv[])
60 {
61 	char **env;
62 
63 	env = argv + argc + 1;
64 	handle_argv(argc, argv, env);
65 	if (&_DYNAMIC != NULL)
66 		atexit(cleanup);
67 	else
68 		_init_tls();
69 
70 #ifdef GCRT
71 	atexit(_mcleanup);
72 	monstartup(&eprol, &etext);
73 __asm__("eprol:");
74 #endif
75 
76 	handle_static_init(argc, argv, env);
77 	exit(main(argc, argv, env));
78 }
79 
80 __asm(".hidden	_start1");
81