xref: /freebsd/lib/csu/aarch64/crt1_c.c (revision dd41de95a84d979615a2ef11df6850622bf6184e)
1 /* LINTLIBRARY */
2 /*-
3  * Copyright 1996-1998 John D. Polstra.
4  * Copyright 2014 Andrew Turner.
5  * Copyright 2014-2015 The FreeBSD Foundation.
6  * All rights reserved.
7  *
8  * Portions of this software were developed by Andrew Turner
9  * under sponsorship from the FreeBSD Foundation.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 
35 #include <stdlib.h>
36 
37 #include "libc_private.h"
38 #include "ignore_init.c"
39 
40 #ifdef GCRT
41 extern void _mcleanup(void);
42 extern void monstartup(void *, void *);
43 extern int eprol;
44 extern int etext;
45 #endif
46 
47 extern long * _end;
48 
49 void __start(int, char **, char **, void (*)(void));
50 
51 /* The entry function. */
52 void
53 __start(int argc, char *argv[], char *env[], void (*cleanup)(void))
54 {
55 
56 	handle_argv(argc, argv, env);
57 
58 	if (&_DYNAMIC != NULL)
59 		atexit(cleanup);
60 	else
61 		_init_tls();
62 
63 #ifdef GCRT
64 	atexit(_mcleanup);
65 	monstartup(&eprol, &etext);
66 __asm__("eprol:");
67 #endif
68 
69 	handle_static_init(argc, argv, env);
70 	exit(main(argc, argv, env));
71 }
72