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 "crtbrand.c"
39 #include "ignore_init.c"
40
41 #ifdef GCRT
42 extern void _mcleanup(void);
43 extern void monstartup(void *, void *);
44 extern int eprol;
45 extern int etext;
46 #endif
47
48 extern long * _end;
49
50 void __start(int, char **, char **, void (*)(void));
51
52 /* The entry function. */
53 __asm(" .text \n"
54 " .align 0 \n"
55 " .globl _start \n"
56 " _start: \n"
57 " mov x3, x2 \n" /* cleanup */
58 " add x1, x0, #8 \n" /* load argv */
59 " ldr x0, [x0] \n" /* load argc */
60 " add x2, x1, x0, lsl #3 \n" /* env is after argv */
61 " add x2, x2, #8 \n" /* argv is null terminated */
62 " b __start ");
63
64
65 /* The entry function. */
66 void
__start(int argc,char * argv[],char * env[],void (* cleanup)(void))67 __start(int argc, char *argv[], char *env[], void (*cleanup)(void))
68 {
69
70 handle_argv(argc, argv, env);
71
72 if (&_DYNAMIC != NULL)
73 atexit(cleanup);
74 else
75 _init_tls();
76
77 #ifdef GCRT
78 atexit(_mcleanup);
79 monstartup(&eprol, &etext);
80 __asm__("eprol:");
81 #endif
82
83 handle_static_init(argc, argv, env);
84 exit(main(argc, argv, env));
85 }
86