xref: /freebsd/lib/csu/arm/crt1_c.c (revision 3c4ba5f55438f7afd4f4b0b56f88f2bb505fd6a6)
1 /* LINTLIBRARY */
2 /*-
3  * SPDX-License-Identifier: BSD-4-Clause
4  *
5  * Copyright 2001 David E. O'Brien.
6  * All rights reserved.
7  * Copyright 1996-1998 John D. Polstra.
8  * All rights reserved.
9  * Copyright (c) 1997 Jason R. Thorpe.
10  * Copyright (c) 1995 Christopher G. Demetriou
11  * All rights reserved.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  * 3. All advertising materials mentioning features or use of this software
22  *    must display the following acknowledgement:
23  *          This product includes software developed for the
24  *          FreeBSD Project.  See https://www.freebsd.org/ for
25  *          information about FreeBSD.
26  *          This product includes software developed for the
27  *          NetBSD Project.  See http://www.netbsd.org/ for
28  *          information about NetBSD.
29  * 4. The name of the author may not be used to endorse or promote products
30  *    derived from this software without specific prior written permission
31  *
32  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
33  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
34  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
35  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
36  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
37  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
38  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
39  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
40  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
41  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42  */
43 
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
46 
47 #include <sys/param.h>
48 #include <sys/elf_common.h>
49 
50 #include "libc_private.h"
51 #include "csu_common.h"
52 
53 struct Struct_Obj_Entry;
54 struct ps_strings;
55 
56 void _start(int, char **, char **, const struct Struct_Obj_Entry *,
57     void (*)(void), struct ps_strings *) __dead2;
58 
59 struct ps_strings *__ps_strings;
60 
61 void __start(int, char **, char **, struct ps_strings *,
62     const struct Struct_Obj_Entry *, void (*)(void)) __dead2;
63 
64 void
65 __start(int argc, char **argv, char **env, struct ps_strings *ps_strings,
66     const struct Struct_Obj_Entry *obj __unused, void (*cleanup)(void))
67 {
68 	if (ps_strings != (struct ps_strings *)0)
69 		__ps_strings = ps_strings;
70 
71 #ifdef GCRT
72 	__libc_start1_gcrt(argc, argv, env, cleanup, main, &eprol, &etext);
73 #else
74 	__libc_start1(argc, argv, env, cleanup, main);
75 #endif
76 }
77 
78 #ifdef GCRT
79 __asm__(".text");
80 __asm__("eprol:");
81 __asm__(".previous");
82 #endif
83