entered into RCS

sysdeps/unix/sysv/irix4/start.c

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+/* Copyright (C) 1991, 1992 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 <errno.h>
+#include <stdlib.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 = 0;
+
+#ifndef	HAVE_GNU_LD
+#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));
+
+/* Use the stack pointer to access the arguments.  This assumes that
+   we can guess how big the frame will be.  */
+register long int sp asm("sp");
+#ifdef __OPTIMIZE__
+#define STACKSIZE 8
+#else
+#define STACKSIZE 10
+#endif
+
+void
+DEFUN_VOID(__start)
+{
+  int argc;
+  char **argv, **envp;
+
+  /* Set up the global pointer.  */
+  asm volatile ("la $28,_gp");
+  argc = ((int *) sp)[STACKSIZE];
+  argv = (char **) &((int *) sp)[STACKSIZE + 1];
+  envp = &argv[argc + 1];
+  __environ = envp;
+
+  __libc_init (argc, argv, envp);
+  errno = 0;
+  exit (main (argc, argv, envp));
+}