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- /* Copyright (C) 1992, 1993 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 <ansidecl.h>
- #include <stddef.h>
- #include <stdlib.h>
- #include <errno.h>
- #include <unistd.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 EXFUN(__mach_init, (NOARGS));
- extern void EXFUN(__libc_init, (int argc, char **argv, char **envp));
- extern int EXFUN(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);
-
- void
- _start (void)
- {
- int *entry_sp;
- register int argc;
- register char **argv, **p;
-
- asm ("leal 4(%%ebp), %0" : "=r" (entry_sp));
-
- argc = *entry_sp;
- argv = (char **) (entry_sp + 1);
- p = argv;
- while (*p++ != NULL)
- ;
- if (p >= (char **) argv[0])
- --p;
- __environ = p;
-
- __mach_init ();
-
- if (_cthread_init_routine != NULL)
- asm volatile ("movl %0, %%esp" : /* No outputs. */ :
- "g" ((*_cthread_init_routine) ()));
-
- __libc_init (argc, argv, __environ);
-
- (_cthread_exit_routine != NULL ? *_cthread_exit_routine : exit)
- (main (argc, argv, __environ));
-
- /* Should never get here. */
- _exit (-1);
- }
-