1/* LINTLIBRARY */
2/*-
3 * Copyright 1996-1998 John D. Polstra.
4 * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
5 * All rights reserved.
6 *
7 * Portions of this software were developed by SRI International and the
8 * University of Cambridge Computer Laboratory under DARPA/AFRL contract
9 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
10 *
11 * Portions of this software were developed by the University of Cambridge
12 * Computer Laboratory as part of the CTSRD Project, with support from the
13 * UK Higher Education Innovation Fund (HEIF).
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
17 * are met:
18 * 1. Redistributions of source code must retain the above copyright
19 *    notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 *    notice, this list of conditions and the following disclaimer in the
22 *    documentation and/or other materials provided with the distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD$");
38
39#include <stdlib.h>
40
41#include "libc_private.h"
42#include "crtbrand.c"
43#include "ignore_init.c"
44
45typedef void (*fptr)(void);
46
47#ifdef GCRT
48extern void _mcleanup(void);
49extern void monstartup(void *, void *);
50extern int eprol;
51extern int etext;
52#endif
53
54void __start(int argc, char **argv, char **env, void (*cleanup)(void));
55
56/* The entry function. */
57__asm("	.text			\n"
58"	.align 0		\n"
59"	.globl _start		\n"
60"	_start:			\n"
61"	mv	a3, a2		\n" /* cleanup */
62"	addi	a1, a0, 8	\n" /* get argv */
63"	ld	a0, 0(a0)	\n" /* load argc */
64"	slli	t0, a0, 3	\n" /* mult by arg size */
65"	add	a2, a1, t0	\n" /* env is after argv */
66"	addi	a2, a2, 8	\n" /* argv is null terminated */
67"	lla	gp, _gp		\n" /* load global pointer */
68"	call	__start");
69
70void
71__start(int argc, char **argv, char **env, void (*cleanup)(void))
72{
73
74	handle_argv(argc, argv, env);
75
76	if (&_DYNAMIC != NULL)
77		atexit(cleanup);
78	else
79		_init_tls();
80
81#ifdef GCRT
82	atexit(_mcleanup);
83	monstartup(&eprol, &etext);
84__asm__("eprol:");
85#endif
86
87	handle_static_init(argc, argv, env);
88	exit(main(argc, argv, env));
89}
90