Startup file for ARM.

diff --git a/sysdeps/unix/arm/start.c b/sysdeps/unix/arm/start.c
new file mode 100644 (file)
index 0000000..7723847
--- /dev/null
+++ b/sysdeps/unix/arm/start.c
@@ -0,0 +1,85 @@
+/* Special startup code for ARM a.out binaries.
+   Copyright (C) 1998 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sysdep.h>
+
+/* The first piece of initialized data.  */
+int __data_start = 0;
+#ifdef HAVE_WEAK_SYMBOLS
+weak_alias (__data_start, data_start)
+#endif
+
+#ifndef errno
+volatile int __errno;
+strong_alias (__errno, errno)
+#endif
+
+extern void __libc_init __P ((int argc, char **argv, char **envp));
+extern int main __P ((int argc, char **argv, char **envp));
+
+/* N.B.: It is important that this be the first function.
+   This file is the first thing in the text section.  */
+
+/* If this was in C it might create its own stack frame and
+   screw up the arguments.  */
+#ifdef NO_UNDERSCORES
+asm (".text; .globl _start; _start: B start1");
+#else
+asm (".text; .globl __start; __start: B _start1");
+
+/* Make an alias called `start' (no leading underscore, so it can't
+   conflict with C symbols) for `_start'.  This is the name vendor crt0.o's
+   tend to use, and thus the name most linkers expect.  */
+asm (".set start, __start");
+#endif
+
+/* Fool gcc into thinking that more args are passed.  This makes it look
+   on the stack (correctly) for the real arguments.  It causes somewhat
+   strange register usage in start1(), but we aren't too bothered about
+   that at the moment. */
+#define DUMMIES a1, a2, a3, a4
+
+#ifdef DUMMIES
+#define        ARG_DUMMIES     DUMMIES,
+#define        DECL_DUMMIES    int DUMMIES;
+#else
+#define        ARG_DUMMIES
+#define        DECL_DUMMIES
+#endif
+
+/* ARGSUSED */
+static void
+start1 (ARG_DUMMIES argc, argv, envp)
+     DECL_DUMMIES
+     int argc;
+     char **argv;
+     char **envp;
+{
+  /* Store a pointer to the environment.  */
+  __environ = envp;
+
+  /* Do C library initializations.  */
+  __libc_init (argc, argv, __environ);
+
+  /* Call the user program.  */
+  exit (main (argc, argv, __environ));
+}