e83f7ba2c9
. file- and functionality-compatible with previous situation
(FreeBSD csu) (with a crt1.o -> crt0.o symlink in /usr/lib)
. harmonizes source with netbsd
. harmonizes linker invocation (e.g. clang) with netbsd
. helpful to get some arm code in there for the arm port project
104 lines
3.4 KiB
C
104 lines
3.4 KiB
C
/* $NetBSD: crt0.c,v 1.12 2004/08/26 21:18:36 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1998 Christos Zoulas
|
|
* Copyright (c) 1995 Christopher G. Demetriou
|
|
* All rights reserved.
|
|
*
|
|
* 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 for the
|
|
* NetBSD Project. See http://www.NetBSD.org/ for
|
|
* information about NetBSD.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
* <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
|
|
*/
|
|
|
|
#include "common.h"
|
|
|
|
void ___start(int, char **, char **, void (*cleanup)(void),
|
|
const Obj_Entry *, struct ps_strings *);
|
|
|
|
__asm(" .text\n\
|
|
.align 4\n\
|
|
.global __start\n\
|
|
.global _start\n\
|
|
__start:\n\
|
|
_start:\n\
|
|
mov 0, %fp\n\
|
|
ld [%sp + 64], %o0 ! get argc\n\
|
|
add %sp, 68, %o1 ! get argv\n\
|
|
sll %o0, 2, %o2 !\n\
|
|
add %o2, 4, %o2 ! envp = argv + (argc << 2) + 4\n\
|
|
add %o1, %o2, %o2 !\n\
|
|
andn %sp, 7, %sp ! align\n\
|
|
sub %sp, 24, %sp ! expand to standard stack frame size\n\
|
|
mov %g3, %o3\n\
|
|
mov %g2, %o4\n\
|
|
call ___start\n\
|
|
mov %g1, %o5\n\
|
|
");
|
|
|
|
void
|
|
___start(int argc, char **argv, char **envp,
|
|
void (*cleanup)(void), /* from shared loader */
|
|
const Obj_Entry *obj, /* from shared loader */
|
|
struct ps_strings *ps_strings)
|
|
{
|
|
environ = envp;
|
|
|
|
if ((__progname = argv[0]) != NULL) { /* NULL ptr if argc = 0 */
|
|
if ((__progname = _strrchr(__progname, '/')) == NULL)
|
|
__progname = argv[0];
|
|
else
|
|
__progname++;
|
|
}
|
|
|
|
if (ps_strings != (struct ps_strings *)0)
|
|
__ps_strings = ps_strings;
|
|
|
|
#ifdef DYNAMIC
|
|
if (&_DYNAMIC != NULL)
|
|
_rtld_setup(cleanup, obj);
|
|
#endif
|
|
|
|
#ifdef MCRT0
|
|
atexit(_mcleanup);
|
|
monstartup((u_long)&_eprol, (u_long)&_etext);
|
|
#endif
|
|
|
|
atexit(_fini);
|
|
_init();
|
|
|
|
exit(main(argc, argv, environ));
|
|
}
|
|
|
|
/*
|
|
* NOTE: Leave the RCS ID _after_ __start(), in case it gets placed in .text.
|
|
*/
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: crt0.c,v 1.12 2004/08/26 21:18:36 thorpej Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include "common.c"
|