binutils214 stage 2/4.
[dragonfly.git] / lib / csu / amd64 / crt1.c
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1/* LINTLIBRARY */
2/*-
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3 * Copyright 1996-1998 John D. Polstra.
4 * All rights reserved.
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5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
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14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1de703da 25 *
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26 * $FreeBSD: src/lib/csu/amd64/crt1.c,v 1.13 2003/04/30 19:27:07 peter Exp $
27 * $DragonFly: src/lib/csu/amd64/crt1.c,v 1.1 2004/02/02 05:43:13 dillon Exp $
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28 */
29
17030342 30#ifndef lint
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31#ifndef __GNUC__
32#error "GCC is needed to compile this file"
33#endif
17030342 34#endif /* lint */
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35
36#include <stdlib.h>
984263bc 37
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38#include "libc_private.h"
39#include "crtbrand.c"
984263bc 40
984263bc 41extern int _DYNAMIC;
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42#pragma weak _DYNAMIC
43
44typedef void (*fptr)(void);
984263bc 45
984263bc 46extern void _fini(void);
17030342 47extern void _init(void);
984263bc 48extern int main(int, char **, char **);
17030342 49extern void _start(char **, void (*)(void));
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50
51#ifdef GCRT
52extern void _mcleanup(void);
53extern void monstartup(void *, void *);
54extern int eprol;
55extern int etext;
56#endif
57
58char **environ;
17030342 59const char *__progname = "";
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60
61/* The entry function. */
62void
17030342 63_start(char **ap, void (*cleanup)(void))
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64{
65 int argc;
66 char **argv;
67 char **env;
17030342 68 const char *s;
984263bc 69
17030342 70 argc = *(long *)(void *)ap;
984263bc 71 argv = ap + 1;
17030342 72 env = ap + 2 + argc;
984263bc 73 environ = env;
17030342 74 if (argc > 0 && argv[0] != NULL) {
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75 __progname = argv[0];
76 for (s = __progname; *s != '\0'; s++)
77 if (*s == '/')
78 __progname = s + 1;
79 }
80
81 if (&_DYNAMIC != NULL)
82 atexit(cleanup);
83
84#ifdef GCRT
85 atexit(_mcleanup);
86#endif
87 atexit(_fini);
88#ifdef GCRT
89 monstartup(&eprol, &etext);
90#endif
91 _init();
92 exit( main(argc, argv, env) );
93}
94
95#ifdef GCRT
96__asm__(".text");
97__asm__("eprol:");
98__asm__(".previous");
99#endif
100
17030342 101__asm__(".ident\t\"$DragonFly: src/lib/csu/amd64/crt1.c,v 1.1 2004/02/02 05:43:13 dillon Exp $\"");