glibc/sysdeps/mach/start.c

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Sun Feb 19 17:46:13 1995 Roland McGrath <roland@duality.gnu.ai.mit.edu> * posix/Makefile (aux): Add environ. * posix/environ.c: New file. * sysdeps/unix/sparc/start.c: Remove __environ definition. * sysdeps/unix/start.c: Likewise. * sysdeps/unix/sysv/irix4/start.c: Likewise. * sysdeps/mach/hurd/start.c: Likewise. * sysdeps/mach/start.c: Likewise. * sysdeps/stub/start.c: Likewise. * sysdeps/unix/make_errlist.c: In produced program, test HAVE_WEAK_SYMBOLS instead of HAVE_GNU_LD. * sysdeps/unix/sysv/sysv4/dup2.c: Fix #include of renamed file. Remove extra weak alias. * sysdeps/unix/sysv/sysv4/sigaltstack.S: Fix unsquashed file name in #include. * libc-symbols.h: Put comment around ^L to pacify Solaris as. * sysdeps/posix/Makefile (cded-objdir-includes): New variable replaced cded-objdir-CPPFLAGS; transform $(+includes) instead of $(CPPFLAGS). (mk-stdiolim): Use it instead. * mach/mach_init.c (__vm_page_size): Make it initialized. It does not work to make a weak alias to a bss symbol. * stdio/Makefile (distribute): Remove mpn-copy.mk; add gen-mpn-copy. (tests): Add test-fwrite. * stdio/test-fwrite.c: New file. * stdlib/stdlib.h [__USE_GNU]: Declare strtof, strtold, __strtof, __strtold. * Makefile (autoconf-it): New canned sequence. Do cvs commit if there is a CVS directory. (configure, %/configure): Use $(autoconf-it) for cmds. * Make-dist: Likewise. * Makerules ($(gpl2lgpl)): Likewise. inlines cause trouble for files defining global register variables. * stdio/vfprintf.c: Set PREC to zero for %. without following digit.
1995-02-20 01:08:14 +00:00
/* Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
1995-02-18 01:27:10 +00:00
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;
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;
}