From 595e0a47f57b414843261303b8aa5036fd1fa1e3 Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Mon, 2 Jan 2017 22:31:27 +1030 Subject: [PATCH] Don't make symbols dynamic other than undef weak Fixes: tmpdir/pr14525: symbol lookup error: tmpdir/pr14525: undefined symbol: __executable_start FAIL: PIE PR ld/14525 * elf32-hppa.c (ensure_undef_weak_dynamic): New function. (allocate_plt_static, allocate_dynrelocs): Use it. --- bfd/ChangeLog | 5 +++++ bfd/elf32-hppa.c | 58 ++++++++++++++++++++++---------------------------------- 2 files changed, 28 insertions(+), 35 deletions(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 0db54c0..420f1fc 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,10 @@ 2017-01-02 Alan Modra + * elf32-hppa.c (ensure_undef_weak_dynamic): New function. + (allocate_plt_static, allocate_dynrelocs): Use it. + +2017-01-02 Alan Modra + * elf-hppa.h (elf_hppa_fake_sections): Set SHF_INFO_LINK for .PARISC.unwind section. diff --git a/bfd/elf32-hppa.c b/bfd/elf32-hppa.c index 8d291db..de14468 100644 --- a/bfd/elf32-hppa.c +++ b/bfd/elf32-hppa.c @@ -1919,6 +1919,21 @@ elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info, return _bfd_elf_adjust_dynamic_copy (info, eh, sec); } +/* Make an undefined weak symbol dynamic. */ + +static bfd_boolean +ensure_undef_weak_dynamic (struct bfd_link_info *info, + struct elf_link_hash_entry *eh) +{ + if (eh->dynindx == -1 + && !eh->forced_local + && eh->type != STT_PARISC_MILLI + && eh->root.type == bfd_link_hash_undefweak + && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT) + return bfd_elf_link_record_dynamic_symbol (info, eh); + return TRUE; +} + /* Allocate space in the .plt for entries that won't have relocations. ie. plabel entries. */ @@ -1942,15 +1957,8 @@ allocate_plt_static (struct elf_link_hash_entry *eh, void *inf) if (htab->etab.dynamic_sections_created && eh->plt.refcount > 0) { - /* Make sure this symbol is output as a dynamic symbol. - Undefined weak syms won't yet be marked as dynamic. */ - if (eh->dynindx == -1 - && !eh->forced_local - && eh->type != STT_PARISC_MILLI) - { - if (! bfd_elf_link_record_dynamic_symbol (info, eh)) - return FALSE; - } + if (!ensure_undef_weak_dynamic (info, eh)) + return FALSE; if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh)) { @@ -2024,15 +2032,8 @@ allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf) if (eh->got.refcount > 0) { - /* Make sure this symbol is output as a dynamic symbol. - Undefined weak syms won't yet be marked as dynamic. */ - if (eh->dynindx == -1 - && !eh->forced_local - && eh->type != STT_PARISC_MILLI) - { - if (! bfd_elf_link_record_dynamic_symbol (info, eh)) - return FALSE; - } + if (!ensure_undef_weak_dynamic (info, eh)) + return FALSE; sec = htab->etab.sgot; eh->got.offset = sec->size; @@ -2092,14 +2093,8 @@ allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf) if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT) hh->dyn_relocs = NULL; - /* Make sure undefined weak symbols are output as a dynamic - symbol in PIEs. */ - else if (eh->dynindx == -1 - && !eh->forced_local) - { - if (! bfd_elf_link_record_dynamic_symbol (info, eh)) - return FALSE; - } + else if (!ensure_undef_weak_dynamic (info, eh)) + return FALSE; } } else @@ -2116,15 +2111,8 @@ allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf) && (eh->root.type == bfd_link_hash_undefweak || eh->root.type == bfd_link_hash_undefined)))) { - /* Make sure this symbol is output as a dynamic symbol. - Undefined weak syms won't yet be marked as dynamic. */ - if (eh->dynindx == -1 - && !eh->forced_local - && eh->type != STT_PARISC_MILLI) - { - if (! bfd_elf_link_record_dynamic_symbol (info, eh)) - return FALSE; - } + if (!ensure_undef_weak_dynamic (info, eh)) + return FALSE; /* If that succeeded, we know we'll be keeping all the relocs. */ -- 2.7.4