1/* LINTLIBRARY */
2/*-
3 * Copyright 2001 David E. O'Brien.
4 * All rights reserved.
5 * Copyright (c) 1995, 1998 Berkeley Software Design, Inc.
6 * All rights reserved.
7 * Copyright 1996-1998 John D. Polstra.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. The name of the authors may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD$");
35
36#ifndef lint
37#ifndef __GNUC__
38#error "GCC is needed to compile this file"
39#endif
40#endif /* lint */
41
42#include <stdlib.h>
43
44#include "libc_private.h"
45#include "crtbrand.c"
46#include "ignore_init.c"
47
48struct Struct_Obj_Entry;
49struct ps_strings;
50
51extern void __sparc_utrap_setup(void);
52
53#ifdef GCRT
54extern void _mcleanup(void);
55extern void monstartup(void *, void *);
56extern int eprol;
57extern int etext;
58#endif
59
60void _start(char **, void (*)(void), struct Struct_Obj_Entry *,
61    struct ps_strings *);
62
63/* The entry function. */
64/*
65 * %o0 holds ps_strings pointer.
66 *
67 * Note: kernel may (is not set in stone yet) pass ELF aux vector in %o1,
68 * but for now we do not use it here.
69 *
70 * The SPARC compliance definitions specifies that the kernel pass the
71 * address of a function to be executed on exit in %g1. We do not make
72 * use of it as it is quite broken, because gcc can use this register
73 * as a temporary, so it is not safe from C code. Its even more broken
74 * for dynamic executables since rtld runs first.
75 */
76/* ARGSUSED */
77void
78_start(char **ap, void (*cleanup)(void), struct Struct_Obj_Entry *obj __unused,
79    struct ps_strings *ps_strings __unused)
80{
81	int argc;
82	char **argv;
83	char **env;
84
85	argc = *(long *)(void *)ap;
86	argv = ap + 1;
87	env  = ap + 2 + argc;
88	handle_argv(argc, argv, env);
89
90	if (&_DYNAMIC != NULL)
91		atexit(cleanup);
92	else {
93		__sparc_utrap_setup();
94		_init_tls();
95	}
96#ifdef GCRT
97	atexit(_mcleanup);
98	monstartup(&eprol, &etext);
99#endif
100
101	handle_static_init(argc, argv, env);
102	exit(main(argc, argv, env));
103}
104
105#ifdef GCRT
106__asm__(".text");
107__asm__("eprol:");
108__asm__(".previous");
109#endif
110