xref: /freebsd/lib/csu/i386/crt1_s.S (revision 193d9e768ba63fcfb187cfd17f461f7d41345048)
1/*-
2 * Copyright 2009 Konstantin Belousov.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27
28#include <machine/asm.h>
29__FBSDID("$FreeBSD$");
30
31	.text
32	.align	4
33	.globl	_start
34	.type	_start, @function
35_start:
36	.cfi_startproc
37	xorl	%ebp,%ebp
38	pushl	%ebp
39	.cfi_def_cfa_offset 4
40	movl	%esp,%ebp
41	.cfi_offset %ebp,-8
42	.cfi_def_cfa_register %ebp
43	andl	$0xfffffff0,%esp # align stack
44	leal	8(%ebp),%eax
45	subl	$4,%esp
46	pushl	%eax		# argv
47	pushl	4(%ebp)		# argc
48	pushl	%edx		# rtld cleanup
49	call	_start1
50	int3
51	.cfi_endproc
52	.size	_start, . - _start
53
54	.section .note.GNU-stack,"",%progbits
55