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/* $NetBSD: crt0.c,v 1.9 2000/06/14 22:52:50 cgd 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 <stdlib.h>
#include <limits.h>
void ___start(int, char **, char **, void (*cleanup)(void), void *);
__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"
);
char **environ;
char *__progname = "";
char __progname_storage[NAME_MAX+1];
#ifdef MCRT0
extern void monstartup(u_long, u_long);
extern void _mcleanup(void);
extern unsigned char _etext, _eprol;
#endif /* MCRT0 */
static char *_strrchr(const char *, char);
void
___start(int argc, char **argv, char **envp, void (*cleanup)(void),
void *obj)
{
char *s;
environ = envp;
if ((__progname = argv[0]) != NULL) { /* NULL ptr if argc = 0 */
if ((__progname = _strrchr(__progname, '/')) == NULL)
__progname = argv[0];
else
__progname++;
for (s = __progname_storage; *__progname &&
s < &__progname_storage[sizeof __progname_storage - 1]; )
*s++ = *__progname++;
*s = '\0';
__progname = __progname_storage;
}
#ifdef MCRT0
atexit(_mcleanup);
monstartup((u_long)&_eprol, (u_long)&_etext);
#endif
__init();
exit(main(argc, argv, environ));
}
static char *
_strrchr(const char *p, char ch)
{
char *save;
for (save = NULL;; ++p) {
if (*p == ch)
save = (char *)p;
if (!*p)
return(save);
}
}
#ifdef MCRT0
asm (" .text");
asm ("_eprol:");
#endif
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