1 files changed, 86 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/init-first.c b/sysdeps/unix/sysv/linux/init-first.c
new file mode 100644
index 0000000000..9d7774a19e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/init-first.c
@@ -0,0 +1,86 @@
+/* Initialization code run first thing by the ELF startup code.  Linux version.
+Copyright (C) 1995, 1996 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 <unistd.h>
+#include <sysdep.h>
+#include "fpu_control.h"
+
+/* This code is mostly the same for all machines.  This version works at
+   least for i386 and m68k, and probably any CISCy machine with a normal
+   stack arrangement.  */
+
+extern void __libc_init (int, char **, char **);
+extern void __libc_global_ctors (void);
+
+
+static void
+init (int *data)
+{
+  int argc = *data;
+  char **argv = (void *) (data + 1);
+  char **envp = &argv[argc + 1];
+
+#ifdef __i386__
+  /* Make sure we are not using the iBSC2 personality.  The `personality'
+     syscall takes one argument; zero means the Linux personality.  The
+     argument arrives in %ebx; we have to save and restore %ebx by hand
+     here, because GCC (as of 2.7.0) cannot handle saving and restoring it
+     for us when it is the dedicated GOT register for PIC.  */
+  asm ("pushl %%ebx\n"
+       "xorl %%ebx, %%ebx\n"
+       "int $0x80 # syscall no %0\n"
+       "popl %%ebx"
+       : : "a" (SYS_ify (personality)));
+#endif
+
+  /* Set the FPU control word to the proper default value.  */
+  __setfpucw (__fpu_control);
+
+  __environ = envp;
+  __libc_init (argc, argv, envp);
+}
+
+#ifdef PIC
+/* This function is called to initialize the shared C library.
+   It is called just before the user _start code from i386/elf/start.S,
+   with the stack set up as that code gets it.  */
+
+/* NOTE!  The linker notices the magical name `_init' and sets the DT_INIT
+   pointer in the dynamic section based solely on that.  It is convention
+   for this function to be in the `.init' section, but the symbol name is
+   the only thing that really matters!!  */
+/*void _init (int argc, ...) __attribute__ ((unused, section (".init")));*/
+
+void
+_init (int argc, ...)
+{
+  init (&argc);
+
+  __libc_global_ctors ();
+}
+#endif
+
+
+void
+__libc_init_first (int argc __attribute__ ((unused)), ...)
+{
+#ifndef PIC
+  init (&argc);
+#endif
+}