Update.

2000-03-30  Ulrich Drepper  <drepper@redhat.com>

	Implement dynamic determination of constructor/destructor order in
	the dynamic linker.
	* elf/Versions [ld.so] (GLIBC_2.0): Remove _dl_init_next.
	(GLIBC_2.2): Add _dl_init.
	* elf/dl-close.c: Also call all destructors in FINI_ARRAY.
	r_duplist is not anymore allocated separately.  l_initfini is and
	therefore free it if necessary.
	* elf/dl-deps.c: If a searchlist has to be allocated, put all in one
	malloc block.  Otherwise allocate l_initfini list only.
	Put dependencies for the object in l_initfini list.
	Sort dependencies for the object to be loaded topologically.
	* elf/dl-fini.c: Before running the destructors sort the topologically.
	* elf/dl-init.c (_dl_init): Renamed from _dl_init_next.  Rewrite to
	call constructors instead of iterating over the pointers.  Get list of
	objects for which to run constructors from l_initfini element. Accept
	argc, argv, and env as parameters and pass them to the constructors.
	* elf/ld-load.c (_dl_map_object_from_fd): Initialize l_ldnum member
	with size of dynamic section.
	* elf/dl-open.c (dl_open_worker): Only call _dl_init instead of
	_dl_init_next and calling constructors ourself.
	* elf/dl-preinit.c (_dl_preinit): Renamed from _dl_preinit_next.
	Take argc, argv, and env as parameters and pass them to the
	constructors.  Rewrite to call all constructors and not iterate over
	the pointers.
	* elf/dynamic-link.h: Don't relocate DT_FINI_ARRAY entry.  Don't
	precompute l_initcount and l_preinitcount.
	* elf/link.h (struct link_map): Add l_ldnum member.
	Make l_phdr_allocated part of the bitfield.  Remove l_runcount,
	l_initcount, and l_preinitcount.  Add l_initfini.
	* sysdeps/generic/ldsodefs.h: Replace _dl_init_next prototype with
	one for _dl_init.
	* sysdeps/i386/dl-machine (RTLD_START): Rewrite to match new init
	function interface.
	* sysdeps/unix/sysv/linux/init-first.h: Removed.
	* sysdeps/unix/sysv/linux/Dist: Delete file here as well.
	* sysdeps/unix/sysv/linux/init-first.c [PIC]: Don't use
	SYSDEP_CALL_INIT.  Make _init a strong alias of init.  The calling
	conventions now match.

	* sysdeps/generic/libc-start.c: Calling __libc_init_first has no
	effect for shared objects.  Don't emit message and call only for
	static library.

3 files changed, 2 insertions, 54 deletions

diff --git a/sysdeps/unix/sysv/linux/Dist b/sysdeps/unix/sysv/linux/Dist
index 87d9044015..06754f8a16 100644
--- a/sysdeps/unix/sysv/linux/Dist
+++ b/sysdeps/unix/sysv/linux/Dist
@@ -3,7 +3,6 @@ cmsg_nxthdr.c
 errlist.h
 getdirentries.c
 getdirentries64.c
-init-first.h
 ipc_priv.h
 kernel-features.h
 kernel_sigaction.h
diff --git a/sysdeps/unix/sysv/linux/init-first.c b/sysdeps/unix/sysv/linux/init-first.c
index 9a8f3c5fb2..a04234864d 100644
--- a/sysdeps/unix/sysv/linux/init-first.c
+++ b/sysdeps/unix/sysv/linux/init-first.c
@@ -1,5 +1,5 @@
 /* Initialization code run first thing by the ELF startup code.  Linux version.
-   Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1995-1999, 2000 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
@@ -22,7 +22,6 @@
 #include <unistd.h>
 #include <sysdep.h>
 #include <fpu_control.h>
-#include <init-first.h>
 #include <sys/param.h>
 #include <sys/sysctl.h>
 #include <sys/types.h>
@@ -156,7 +155,7 @@ init (int argc, char **argv, char **envp)
 
 #ifdef PIC
 
-SYSDEP_CALL_INIT(_init, init);
+strong_alias (init, _init);
 
 void
 __libc_init_first (void)
diff --git a/sysdeps/unix/sysv/linux/init-first.h b/sysdeps/unix/sysv/linux/init-first.h
deleted file mode 100644
index aaf8a4f4dc..0000000000
--- a/sysdeps/unix/sysv/linux/init-first.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/* Prepare arguments for library initialization function.
-   Copyright (C) 1997, 1999 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.  */
-
-/* The job of this fragment it to find argc and friends for INIT.
-   This is done in one of two ways: either in the stack context
-   of program start, or having dlopen pass them in.  */
-
-#define SYSDEP_CALL_INIT(NAME, INIT)					      \
-void NAME (void *arg)							      \
-{									      \
-  int argc;								      \
-  char **argv, **envp;							      \
-  /* The next variable is only here to work around a bug in gcc <= 2.7.2.2.   \
-     If the address would be taken inside the expression the optimizer	      \
-     would try to be too smart and throws it away.  Grrr.  */		      \
-  int *dummy_addr = &_dl_starting_up;					      \
-									      \
-  __libc_multiple_libcs = dummy_addr && !_dl_starting_up;		      \
-									      \
-  if (!__libc_multiple_libcs)						      \
-    {									      \
-      argc = (int) (long int) arg;					      \
-      argv = (char **) &arg + 1;					      \
-      envp = &argv[argc+1];						      \
-    }									      \
-  else									      \
-    {									      \
-      argc = (int) (long int) arg;					      \
-      argv = ((char ***) &arg)[1];					      \
-      envp = ((char ***) &arg)[2];					      \
-    }									      \
-									      \
-  INIT (argc, argv, envp);						      \
-}