From 91ac591132f0891f30c9f6e6e7d4a3c56707ecdd Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Wed, 16 May 2007 12:52:03 +0000 Subject: [PATCH] 2007-05-16 H.J. Lu Alan Modra * elflink.c (_bfd_elf_adjust_dynamic_copy): Align dynamic bss section to the minimum alignment. --- bfd/ChangeLog | 6 ++++++ bfd/elflink.c | 32 ++++++++++++++++---------------- 2 files changed, 22 insertions(+), 16 deletions(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index a46bc09ef41..ab4a46fd40e 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,9 @@ +2007-05-16 H.J. Lu + Alan Modra + + * elflink.c (_bfd_elf_adjust_dynamic_copy): Align dynamic bss + section to the minimum alignment. + 2007-05-15 H.J. Lu Alan Modra diff --git a/bfd/elflink.c b/bfd/elflink.c index 6cf1ba9f67b..dfdbade6353 100644 --- a/bfd/elflink.c +++ b/bfd/elflink.c @@ -2616,33 +2616,33 @@ bfd_boolean _bfd_elf_adjust_dynamic_copy (struct elf_link_hash_entry *h, asection *dynbss) { - unsigned int power_of_two, orig_power_of_two; + unsigned int power_of_two; bfd_vma mask; asection *sec = h->root.u.def.section; /* The section aligment of definition is the maximum alignment - requirement of symbols defined in the section. */ - power_of_two = bfd_get_section_alignment (dynbss->owner, dynbss); - orig_power_of_two = bfd_get_section_alignment (sec->owner, sec); + requirement of symbols defined in the section. Since we don't + know the symbol alignment requirement, we start with the + maximum alignment and check low bits of the symbol address + for the minimum alignment. */ + power_of_two = bfd_get_section_alignment (sec->owner, sec); + mask = ((bfd_vma) 1 << power_of_two) - 1; + while ((h->root.u.def.value & mask) != 0) + { + mask >>= 1; + --power_of_two; + } - if (orig_power_of_two > power_of_two) + if (power_of_two > bfd_get_section_alignment (dynbss->owner, + dynbss)) { /* Adjust the section alignment if needed. */ if (! bfd_set_section_alignment (dynbss->owner, dynbss, - orig_power_of_two)) + power_of_two)) return FALSE; } - /* We make sure that the symbol will be aligned properly. Since we - don't know its alignment requirement, we start with the maximum - alignment and check low bits of the symbol address for the - minimum alignment. */ - mask = ((bfd_vma) 1 << orig_power_of_two) - 1; - while ((h->root.u.def.value & mask) != 0) - { - mask >>= 1; - --orig_power_of_two; - } + /* We make sure that the symbol will be aligned properly. */ dynbss->size = BFD_ALIGN (dynbss->size, mask + 1); /* Define the symbol as being at this point in DYNBSS. */ -- 2.30.2