From 06b31ad3ef500de502d461954466018aec10e437 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Mon, 9 Dec 2002 20:37:37 +0000
Subject: * elf/Makefile (tests): Uncomment tst-array[123].

	* Makeconfig (CPPFLAGS-.oS): Add -DLIBC_NONSHARED=1.
	* csu/elf-init.c: New file.
	* csu/Makefile (routines, static-only-routines): Add elf-init.
	* sysdeps/alpha/elf/start.S: Use __libc_csu_init in place of _init
	and __libc_csu_fini in place of _fini.
	* sysdeps/arm/elf/start.S: Likewise.
	* sysdeps/cris/elf/start.S: Likewise.
	* sysdeps/hppa/elf/start.S: Likewise.
	* sysdeps/i386/elf/start.S: Likewise.
	* sysdeps/ia64/elf/start.S: Likewise.
	* sysdeps/m68k/elf/start.S: Likewise.
	* sysdeps/mach/hurd/powerpc/static-start.S: Likewise.
	* sysdeps/mips/elf/start.S: Likewise.
	* sysdeps/powerpc/powerpc32/elf/start.S: Likewise.
	* sysdeps/powerpc/powerpc64/elf/start.S: Likewise.
	* sysdeps/s390/s390-32/elf/start.S: Likewise.
	* sysdeps/s390/s390-64/elf/start.S: Likewise.
	* sysdeps/sh/elf/start.S: Likewise.
	* sysdeps/sparc/sparc32/elf/start.S: Likewise.
	* sysdeps/sparc/sparc64/elf/start.S: Likewise.
	* sysdeps/x86_64/elf/start.S: Likewise.
---
 csu/Makefile   |  3 ++-
 csu/elf-init.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+), 1 deletion(-)
 create mode 100644 csu/elf-init.c

(limited to 'csu')

diff --git a/csu/Makefile b/csu/Makefile
index 6b6991935a..f3b099ee40 100644
--- a/csu/Makefile
+++ b/csu/Makefile
@@ -27,9 +27,10 @@
 subdir := csu
 
 routines = init-first libc-start $(libc-init) sysdep version check_fds \
-	   libc-tls
+	   libc-tls elf-init
 aux	 = errno
 elide-routines.os = libc-tls
+static-only-routines = elf-init
 csu-dummies = $(filter-out $(start-installed-name),crt1.o Mcrt1.o)
 extra-objs = start.o gmon-start.o \
 	     $(start-installed-name) g$(start-installed-name) $(csu-dummies)
diff --git a/csu/elf-init.c b/csu/elf-init.c
new file mode 100644
index 0000000000..c28b73ca62
--- /dev/null
+++ b/csu/elf-init.c
@@ -0,0 +1,82 @@
+/* Startup support for ELF initializers/finalizers in the main executable.
+   Copyright (C) 2002 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <stddef.h>
+
+#ifdef HAVE_INITFINI_ARRAY
+/* These magic symbols are provided by the linker.  */
+extern void (*__preinit_array_start []) (void);
+extern void (*__preinit_array_end []) (void);
+extern void (*__init_array_start []) (void);
+extern void (*__init_array_end []) (void);
+extern void (*__fini_array_start []) (void);
+extern void (*__fini_array_end []) (void);
+#endif
+
+/* These function symbols are provided for the .init/.fini section entry
+   points automagically by the linker.  */
+extern void _init (void);
+extern void _fini (void);
+
+/* These functions are passed to __libc_start_main by the startup code.
+   These get statically linked into each program.  For dynamically linked
+   programs, this module will come from libc_nonshared.a and differs from
+   the libc.a module in that it doesn't call the preinit array.  */
+
+void
+__libc_csu_init (void)
+{
+#ifdef HAVE_INITFINI_ARRAY
+  /* For dynamically linked executables the preinit array is executed by
+     the dynamic linker (before initializing any shared object.  */
+
+# ifndef LIBC_NONSHARED
+  /* For static executables, preinit happens rights before init.  */
+  {
+    const size_t size = __preinit_array_end - __preinit_array_start;
+    size_t i;
+    for (i = 0; i < size; i++)
+      (*__preinit_array_start [i]) ();
+  }
+# endif
+#endif
+
+  _init ();
+
+#ifdef HAVE_INITFINI_ARRAY
+  {
+    const size_t size = __init_array_end - __init_array_start;
+    size_t i;
+    for (i = 0; i < size; i++)
+      (*__init_array_start [i]) ();
+  }
+#endif
+}
+
+void
+__libc_csu_fini (void)
+{
+#ifdef HAVE_INITFINI_ARRAY
+  size_t i = __fini_array_end - __fini_array_start;
+  while (i-- > 0)
+    (*__fini_array_start [i]) ();
+#endif
+
+  _fini ();
+}
-- 
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