126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/* $NetBSD: crt0.c,v 1.33 2005/12/24 22:02:10 perry Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Charles M. Hannum and Paul Kranenburg.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "common.h"
|
|
|
|
extern void start __P((void)) __asm("start");
|
|
void __start __P((int, char *[], char *[]));
|
|
|
|
__asm("
|
|
.text
|
|
.align 2
|
|
.globl start
|
|
start:
|
|
movl %ebx,___ps_strings
|
|
movl (%esp),%eax
|
|
leal 8(%esp,%eax,4),%ecx
|
|
leal 4(%esp),%edx
|
|
pushl %ecx
|
|
pushl %edx
|
|
pushl %eax
|
|
call ___start
|
|
");
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: crt0.c,v 1.33 2005/12/24 22:02:10 perry Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
void
|
|
__start(argc, argv, envp)
|
|
int argc;
|
|
char *argv[];
|
|
char *envp[];
|
|
{
|
|
char *ap;
|
|
|
|
environ = envp;
|
|
|
|
if ((ap = argv[0]))
|
|
if ((__progname = _strrchr(ap, '/')) == NULL)
|
|
__progname = ap;
|
|
else
|
|
++__progname;
|
|
|
|
#ifdef DYNAMIC
|
|
/* ld(1) convention: if DYNAMIC = 0 then statically linked */
|
|
#ifdef stupid_gcc
|
|
if (&_DYNAMIC)
|
|
#else
|
|
if ( ({volatile caddr_t x = (caddr_t)&_DYNAMIC; x; }) )
|
|
#endif
|
|
__load_rtld(&_DYNAMIC);
|
|
#endif /* DYNAMIC */
|
|
|
|
#ifdef MCRT0
|
|
atexit(_mcleanup);
|
|
monstartup((u_long)&eprol, (u_long)&etext);
|
|
#endif /* MCRT0 */
|
|
|
|
__asm("__callmain:"); /* Defined for the benefit of debuggers */
|
|
exit(main(argc, argv, envp));
|
|
}
|
|
|
|
#ifdef DYNAMIC
|
|
__asm("
|
|
.text
|
|
.align 2
|
|
___syscall:
|
|
popl %ecx
|
|
popl %eax
|
|
pushl %ecx
|
|
int $0x80
|
|
jc 1f
|
|
jmp %ecx
|
|
1:
|
|
movl $-1,%eax
|
|
jmp %ecx
|
|
");
|
|
#endif /* DYNAMIC */
|
|
|
|
#include "common.c"
|
|
|
|
#ifdef MCRT0
|
|
__asm("
|
|
.text
|
|
.align 2
|
|
eprol:
|
|
");
|
|
#endif /* MCRT0 */
|