From 021259621898fa6731d6d44c3313b6af43f727f4 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Mon, 15 Jun 2009 07:46:53 -0700 Subject: [PATCH] libc part of prelink IFUNC support. The dl-lookup.c changes are needed for prelink (support in prelink checked into SVN, tested for both i?86 and x86-64), dl-irel.h just something I discovered by code inspection. --- ChangeLog | 8 ++++++++ elf/dl-lookup.c | 17 +++++++++++------ sysdeps/i386/dl-irel.h | 2 +- 3 files changed, 20 insertions(+), 7 deletions(-) diff --git a/ChangeLog b/ChangeLog index 6734938..95b13e0 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,11 @@ +2009-06-15 Jakub Jelinek + + * elf/dl-lookup.c (_dl_debug_bindings): When resolving to + STT_GNU_IFUNC symbol or in 8 into type_class. + + * sysdeps/i386/dl-irel.h (elf_irel): Use Elf32_Addr type + instead of Elf64_Addr. + 2009-06-14 Ulrich Drepper * po/sv.po: Update from translation team. diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c index 92dc7b2..707d650 100644 --- a/elf/dl-lookup.c +++ b/elf/dl-lookup.c @@ -1,5 +1,5 @@ /* Look up a symbol in the loaded objects. - Copyright (C) 1995-2005, 2006, 2007 Free Software Foundation, Inc. + Copyright (C) 1995-2005, 2006, 2007, 2009 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 @@ -542,15 +542,20 @@ _dl_debug_bindings (const char *undef_name, struct link_map *undef_map, conflict = 1; } - if (value->s - && (__builtin_expect (ELFW(ST_TYPE) (value->s->st_info) - == STT_TLS, 0))) - type_class = 4; + if (value->s) + { + if (__builtin_expect (ELFW(ST_TYPE) (value->s->st_info) + == STT_TLS, 0)) + type_class = 4; + else if (__builtin_expect (ELFW(ST_TYPE) (value->s->st_info) + == STT_GNU_IFUNC, 0)) + type_class |= 8; + } if (conflict || GLRO(dl_trace_prelink_map) == undef_map || GLRO(dl_trace_prelink_map) == NULL - || type_class == 4) + || type_class >= 4) { _dl_printf ("%s 0x%0*Zx 0x%0*Zx -> 0x%0*Zx 0x%0*Zx ", conflict ? "conflict" : "lookup", diff --git a/sysdeps/i386/dl-irel.h b/sysdeps/i386/dl-irel.h index 810a350..30385a1 100644 --- a/sysdeps/i386/dl-irel.h +++ b/sysdeps/i386/dl-irel.h @@ -35,7 +35,7 @@ elf_irel (const Elf32_Rel *reloc) if (__builtin_expect (r_type == R_386_IRELATIVE, 1)) { - Elf64_Addr value = ((Elf32_Addr (*) (void)) (*reloc_addr)) (); + Elf32_Addr value = ((Elf32_Addr (*) (void)) (*reloc_addr)) (); *reloc_addr = value; } else -- 2.7.4