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/* Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <stddef.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <sysdep.h>
#ifndef __GNUC__
#error This file uses GNU C extensions; you must compile with GCC.
#endif
/* The first piece of initialized data. */
int __data_start = 0;
volatile int errno;
#ifndef HAVE_GNU_LD
#define __environ environ
#endif
char **__environ;
extern void __mach_init (void);
extern void __libc_init (int argc, char **argv, char **envp);
extern int main (int argc, char **argv, char **envp);
/* These are uninitialized common definitions so they will be zero
by default. If the user links in C threads, that will provide initialized
definitions that override these. */
void *(*_cthread_init_routine) (void); /* Returns new SP to use. */
void (*_cthread_exit_routine) (int status);
/* These are for communication from _start to start1,
where we cannot use the stack for anything. */
static int start_argc;
static char **start_argv;
/* _start calls this on the new stack. */
static volatile void
start1 (void)
{
__libc_init (start_argc, start_argv, __environ);
(_cthread_exit_routine != NULL ? *_cthread_exit_routine : exit)
(main (start_argc, start_argv, __environ));
/* Should never get here. */
LOSE;
}
#ifndef START_ARGS
#define START_ARGS void
#ifdef START_MACHDEP
START_MACHDEP
#define _start _start0
#endif
void
_start (START_ARGS)
{
SNARF_ARGS (start_argc, start_argv, __environ);
__mach_init ();
if (_cthread_init_routine != NULL)
CALL_WITH_SP (start1, (*_cthread_init_routine) ());
else
start1 ();
/* Should never get here. */
LOSE;
}
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