initial import

1 files changed, 106 insertions, 0 deletions

diff --git a/sysdeps/unix/start.c b/sysdeps/unix/start.c
new file mode 100644
index 0000000000..da7ec71ffb
--- /dev/null
+++ b/sysdeps/unix/start.c
@@ -0,0 +1,106 @@
+/* Copyright (C) 1991, 1993, 1995 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 General Public License as published by
+the Free Software Foundation; either version 2, 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the GNU C Library; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sysdep.h>		/* In case it wants to define anything.  */
+
+/* The first piece of initialized data.  */
+int __data_start = 0;
+#ifdef HAVE_WEAK_SYMBOLS
+weak_alias (__data_start, data_start)
+#endif
+
+#ifdef	DUMMIES
+#define	ARG_DUMMIES	DUMMIES,
+#define	DECL_DUMMIES	int DUMMIES;
+#else
+#define	ARG_DUMMIES
+#define	DECL_DUMMIES
+#endif
+
+VOLATILE int errno;
+
+#ifdef	HAVE_WEAK_SYMBOLS
+weak_alias (__environ, environ)
+#else
+#undef	environ
+#define	__environ	environ
+#endif
+
+char **__environ;
+
+extern void EXFUN(__libc_init, (int argc, char **argv, char **envp));
+extern int EXFUN(main, (int argc, char **argv, char **envp));
+
+
+/* Not a prototype because it gets called strangely.  */
+static void start1();
+
+#ifndef	HAVE__start
+
+#if !defined (NO_UNDERSCORES) && defined (__GNUC__)
+/* Declare _start with an explicit assembly symbol name of `start'
+   (note no leading underscore).  This is the name vendor crt0.o's
+   tend to use, and thus the name most linkers expect.  */
+void _start (void) asm ("start");
+#endif
+
+/* N.B.: It is important that this be the first function.
+   This file is the first thing in the text section.  */
+void
+DEFUN_VOID(_start)
+{
+  start1();
+}
+
+#if !defined (NO_UNDERSCORES) && defined (HAVE_GNU_LD) && !defined (__GNUC__)
+/* Make an alias called `start' (no leading underscore,
+   so it can't conflict with C symbols) for `_start'.  */
+asm(".stabs \"start\",11,0,0,0");
+asm(".stabs \"__start\",1,0,0,0");
+#endif
+
+#endif
+
+/* ARGSUSED */
+static void
+start1(ARG_DUMMIES argc, argp)
+     DECL_DUMMIES
+     int argc;
+     char *argp;
+{
+  char **argv = &argp;
+
+  /* The environment starts just after ARGV.  */
+  __environ = &argv[argc + 1];
+
+  /* If the first thing after ARGV is the arguments
+     themselves, there is no environment.  */
+  if ((char *) __environ == *argv)
+    /* The environment is empty.  Make __environ
+       point at ARGV[ARGC], which is NULL.  */
+    --__environ;
+
+  /* Do C library initializations.  */
+  __libc_init (argc, argv, __environ);
+
+  /* Call the user program.  */
+  exit(main(argc, argv, __environ));
+}