[src/trunk]: src Pass down ELF Auxillary Vectors for static NetBSD binaries too.

[joerg <joerg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/60c25afb68f9
branches:  trunk
changeset: 762984:60c25afb68f9
user:      joerg <joerg%NetBSD.org@localhost>
date:      Mon Mar 07 05:09:09 2011 +0000

description:
Pass down ELF Auxillary Vectors for static NetBSD binaries too.
Rename __libc_init to _libc_init and call it explicitly from CSU code.
This enforces the constructor run order for newly linked programs.
Keep it as constructor with run-once semantic for binary compatibility.
Implement dl_iterate_phdr for statically linked programs.

This material is based upon work partially supported by
The NetBSD Foundation under a contract with Joerg Sonnenberger.

diffstat:

 lib/csu/alpha/crt0.c                      |   6 ++-
 lib/csu/arm_elf/crt0.c                    |   6 ++-
 lib/csu/common/crt0-common.c              |   7 ++-
 lib/csu/common_elf/common.h               |   3 +-
 lib/csu/hppa/crt0.c                       |   6 ++-
 lib/csu/ia64/crt0.c                       |   6 ++-
 lib/csu/m68k_elf/crt0.c                   |   6 ++-
 lib/csu/powerpc/crt0.c                    |   6 ++-
 lib/csu/powerpc64/crt0.c                  |   6 ++-
 lib/csu/sh3_elf/crt0.c                    |   6 ++-
 lib/csu/sparc64/crt0.c                    |   6 ++-
 lib/csu/sparc_elf/crt0.c                  |   6 ++-
 lib/csu/vax_elf/crt0.c                    |   6 ++-
 lib/libc/dlfcn/dlfcn_elf.c                |  60 +++++++++++++++++++++++++++++-
 lib/libc/misc/initfini.c                  |  33 ++++++++++++++--
 lib/libc/stdlib/exit.c                    |  11 +----
 sys/compat/netbsd32/netbsd32_exec_elf32.c |   6 +-
 sys/kern/exec_elf.c                       |   5 +-
 18 files changed, 144 insertions(+), 47 deletions(-)

diffs (truncated from 583 to 300 lines):

diff -r 45965571e727 -r 60c25afb68f9 lib/csu/alpha/crt0.c
--- a/lib/csu/alpha/crt0.c      Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/alpha/crt0.c      Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: crt0.c,v 1.25 2011/02/22 05:45:05 joerg Exp $ */
+/* $NetBSD: crt0.c,v 1.26 2011/03/07 05:09:09 joerg Exp $ */
 
 /*
  * Copyright (c) 1995 Christopher G. Demetriou
@@ -69,6 +69,8 @@
                _rtld_setup(cleanup, obj);
 #endif
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&_eprol, (u_long)&_etext);
@@ -84,7 +86,7 @@
  * NOTE: Leave the RCS ID _after_ __start(), in case it gets placed in .text.
  */
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.25 2011/02/22 05:45:05 joerg Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.26 2011/03/07 05:09:09 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "common.c"
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/arm_elf/crt0.c
--- a/lib/csu/arm_elf/crt0.c    Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/arm_elf/crt0.c    Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: crt0.c,v 1.8 2011/02/22 05:45:05 joerg Exp $   */
+/*     $NetBSD: crt0.c,v 1.9 2011/03/07 05:09:09 joerg Exp $   */
 
 /*
  * Copyright (C) 1997 Mark Brinicombe
@@ -68,7 +68,7 @@
 "      b       " ___STRING(_C_LABEL(___start)) " ");
 
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.8 2011/02/22 05:45:05 joerg Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.9 2011/03/07 05:09:09 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 void
@@ -93,6 +93,8 @@
                 _rtld_setup(cleanup, obj);
 #endif /* DYNAMIC */
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&_eprol, (u_long)&_etext);
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/common/crt0-common.c
--- a/lib/csu/common/crt0-common.c      Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/common/crt0-common.c      Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: crt0-common.c,v 1.4 2011/02/22 05:45:06 joerg Exp $ */
+/* $NetBSD: crt0-common.c,v 1.5 2011/03/07 05:09:09 joerg Exp $ */
 
 /*
  * Copyright (c) 1998 Christos Zoulas
@@ -36,7 +36,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: crt0-common.c,v 1.4 2011/02/22 05:45:06 joerg Exp $");
+__RCSID("$NetBSD: crt0-common.c,v 1.5 2011/03/07 05:09:09 joerg Exp $");
 
 #include <sys/types.h>
 #include <sys/syscall.h>
@@ -50,6 +50,7 @@
 
 extern void    _init(void);
 extern void    _fini(void);
+extern void    _libc_init(void);
 
 /*
  * Arrange for _DYNAMIC to be weak and undefined (and therefore to show up
@@ -115,6 +116,8 @@
                atexit(cleanup);
        }
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&__eprol, (u_long)&__etext);
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/common_elf/common.h
--- a/lib/csu/common_elf/common.h       Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/common_elf/common.h       Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: common.h,v 1.14 2011/02/22 05:45:06 joerg Exp $ */
+/* $NetBSD: common.h,v 1.15 2011/03/07 05:09:09 joerg Exp $ */
 
 /*
  * Copyright (c) 1995 Christopher G. Demetriou
@@ -71,6 +71,7 @@
 
 extern void    _init(void);
 extern void    _fini(void);
+extern void    _libc_init(void);
 
 #ifdef DYNAMIC
 void   _rtld_setup(void (*)(void), const Obj_Entry *obj);
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/hppa/crt0.c
--- a/lib/csu/hppa/crt0.c       Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/hppa/crt0.c       Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: crt0.c,v 1.9 2011/02/23 10:26:09 skrll Exp $   */
+/*     $NetBSD: crt0.c,v 1.10 2011/03/07 05:09:10 joerg Exp $  */
 
 /*
  * Copyright (c) 2002 Matt Fredette
@@ -93,6 +93,8 @@
                _rtld_setup(cleanup, obj);
 #endif
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&_eprol, (u_long)&_etext);
@@ -131,7 +133,7 @@
  * NOTE: Leave the RCS ID _after_ __start(), in case it gets placed in .text.
  */
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.9 2011/02/23 10:26:09 skrll Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.10 2011/03/07 05:09:10 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "common.c"
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/ia64/crt0.c
--- a/lib/csu/ia64/crt0.c       Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/ia64/crt0.c       Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: crt0.c,v 1.3 2011/02/22 05:45:06 joerg Exp $ */
+/* $NetBSD: crt0.c,v 1.4 2011/03/07 05:09:10 joerg Exp $ */
 
 /*
  * Copyright (c) 1995 Christopher G. Demetriou
@@ -76,6 +76,8 @@
                _rtld_setup(cleanup, obj);
 #endif
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&_eprol, (u_long)&_etext);
@@ -91,7 +93,7 @@
  * NOTE: Leave the RCS ID _after_ __start(), in case it gets placed in .text.
  */
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.3 2011/02/22 05:45:06 joerg Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.4 2011/03/07 05:09:10 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "common.c"
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/m68k_elf/crt0.c
--- a/lib/csu/m68k_elf/crt0.c   Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/m68k_elf/crt0.c   Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: crt0.c,v 1.12 2011/02/22 05:45:06 joerg Exp $ */
+/* $NetBSD: crt0.c,v 1.13 2011/03/07 05:09:10 joerg Exp $ */
 
 /*
  * Copyright (c) 1999 Klaus Klein
@@ -79,6 +79,8 @@
                _rtld_setup(cleanup, obj);
 #endif
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&_eprol, (u_long)&_etext);
@@ -94,7 +96,7 @@
  * NOTE: Leave the RCS ID _after_ __start(), in case it gets placed in .text.
  */
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.12 2011/02/22 05:45:06 joerg Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.13 2011/03/07 05:09:10 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "common.c"
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/powerpc/crt0.c
--- a/lib/csu/powerpc/crt0.c    Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/powerpc/crt0.c    Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: crt0.c,v 1.28 2011/02/26 17:11:23 matt Exp $ */
+/* $NetBSD: crt0.c,v 1.29 2011/03/07 05:09:10 joerg Exp $ */
 
 /*
  * Copyright (c) 1997 Jason R. Thorpe.
@@ -92,6 +92,8 @@
                _rtld_setup(cleanup, obj);
 #endif
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&_eprol, (u_long)&_etext);
@@ -107,7 +109,7 @@
  * NOTE: Leave the RCS ID _after_ __start(), in case it gets placed in .text.
  */
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.28 2011/02/26 17:11:23 matt Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.29 2011/03/07 05:09:10 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "common.c"
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/powerpc64/crt0.c
--- a/lib/csu/powerpc64/crt0.c  Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/powerpc64/crt0.c  Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: crt0.c,v 1.3 2011/02/22 05:45:07 joerg Exp $ */
+/* $NetBSD: crt0.c,v 1.4 2011/03/07 05:09:10 joerg Exp $ */
 
 /*
  * Copyright (c) 1997 Jason R. Thorpe.
@@ -78,6 +78,8 @@
                _rtld_setup(cleanup, obj);
 #endif
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&_eprol, (u_long)&_etext);
@@ -93,7 +95,7 @@
  * NOTE: Leave the RCS ID _after_ __start(), in case it gets placed in .text.
  */
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.3 2011/02/22 05:45:07 joerg Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.4 2011/03/07 05:09:10 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "common.c"
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/sh3_elf/crt0.c
--- a/lib/csu/sh3_elf/crt0.c    Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/sh3_elf/crt0.c    Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: crt0.c,v 1.11 2011/02/22 05:45:07 joerg Exp $ */
+/* $NetBSD: crt0.c,v 1.12 2011/03/07 05:09:11 joerg Exp $ */
 
 /*
  * Copyright (c) 1998 Christos Zoulas
@@ -73,6 +73,8 @@
                _rtld_setup(cleanup, obj);
 #endif
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&_eprol, (u_long)&_etext);
@@ -88,7 +90,7 @@
  * NOTE: Leave the RCS ID _after_ __start(), in case it gets placed in .text.
  */
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.11 2011/02/22 05:45:07 joerg Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.12 2011/03/07 05:09:11 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "common.c"
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/sparc64/crt0.c
--- a/lib/csu/sparc64/crt0.c    Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/sparc64/crt0.c    Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: crt0.c,v 1.25 2011/02/22 05:45:07 joerg Exp $ */
+/* $NetBSD: crt0.c,v 1.26 2011/03/07 05:09:11 joerg Exp $ */
 
 /*
  * Copyright (c) 1995 Christopher G. Demetriou
@@ -98,6 +98,8 @@
                _rtld_setup(cleanup, obj);
 #endif
 
+       _libc_init();
+
 #ifdef MCRT0
        atexit(_mcleanup);
        monstartup((u_long)&_eprol, (u_long)&_etext);
@@ -113,7 +115,7 @@
  * NOTE: Leave the RCS ID _after_ _start(), in case it gets placed in .text.
  */
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.25 2011/02/22 05:45:07 joerg Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.26 2011/03/07 05:09:11 joerg Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "common.c"
diff -r 45965571e727 -r 60c25afb68f9 lib/csu/sparc_elf/crt0.c
--- a/lib/csu/sparc_elf/crt0.c  Mon Mar 07 03:29:26 2011 +0000
+++ b/lib/csu/sparc_elf/crt0.c  Mon Mar 07 05:09:09 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: crt0.c,v 1.13 2011/02/22 05:45:08 joerg Exp $ */