NetBSD/lib/csu/ns32k/crt0.c

123 lines
3.8 KiB
C

/*-
* Copyright (c) 1990 The Regents of the University of California.
* 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 by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*/
#if defined(LIBC_SCCS) && !defined(lint)
/*static char sccsid[] = "@(#)crt0.c 5.7 (Berkeley) 7/3/91"; */
static char rcsid[] = "";
#endif /* LIBC_SCCS and not lint */
/*
* $Id: crt0.c,v 1.1.1.1 1993/09/17 18:42:11 phil Exp $
*
* C start up routine.
* Robert Henry, UCB, 20 Oct 81
*
* Modified by Phil Nelson for the PC532, July 18, 1993.
*
* We make the following (true) assumption:
* 1) We can trust fp and sp. Both "start" pointing to the
* first entry in the argc/argv/envp structure... After
* the "enter [???],?", fp points to the word just before
* the argc/argv/envp structure!
*
*/
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
char **environ = (char **)0;
static char empty[1];
char *__progname = empty;
int errno = 0;
/* To make sure "start" is past the a.out header. This should go away soon. */
asm(".text");
asm(".long 0,0,0,0,0,0,0,0");
extern unsigned char etext;
extern unsigned char eprol asm ("eprol");
extern start() asm("start");
extern mcount() asm ("mcount");
start(long param)
{
struct kframe {
int kargc;
char *kargv[1]; /* size depends on kargc */
char kargstr[1]; /* size varies */
char kenvstr[1]; /* size varies */
};
/*
* ALL REGISTER VARIABLES!!!
*/
register struct kframe *kfp;
register char **targv;
register char **argv;
extern void _mcleanup();
kfp = (struct kframe *) (&param-1);
for (argv = targv = &kfp->kargv[0]; *targv++; /* void */)
/* void */ ;
if (targv >= (char **)(*argv))
--targv;
environ = targv;
asm("eprol:");
#ifdef MCRT0
atexit(_mcleanup);
monstartup(&eprol, &etext);
#endif MCRT0
errno = 0;
if (argv[0])
if ((__progname = strrchr(argv[0], '/')) == NULL)
__progname = argv[0];
else
++__progname;
exit(main(kfp->kargc, argv, environ));
}
#ifdef CRT0
/*
* null mcount and moncontrol,
* just in case some routine is compiled for profiling
*/
moncontrol(val)
int val;
{
}
mcount() { }
#endif CRT0