aboutsummaryrefslogtreecommitdiff
path: root/bfd/elflink.c
diff options
context:
space:
mode:
authorAlan Modra <amodra@gmail.com>2017-02-28 08:06:02 +1030
committerAlan Modra <amodra@gmail.com>2017-02-28 11:59:47 +1030
commitafbf7e8e3aa24152ad58e430c8d37d82e5751f1c (patch)
treecf445507abe3c55990aff37ff6aa1770dbddaebb /bfd/elflink.c
parent0e39210161e7c547ab53afb86997303e24a42c0c (diff)
downloadgdb-afbf7e8e3aa24152ad58e430c8d37d82e5751f1c.zip
gdb-afbf7e8e3aa24152ad58e430c8d37d82e5751f1c.tar.gz
gdb-afbf7e8e3aa24152ad58e430c8d37d82e5751f1c.tar.bz2
Don't make dynamic .data.rel.ro SEC_READONLY
I'd made this dynamic section read-only so a flag test distinguished it from .dynbss, but like any other .data.rel.ro section it really should be marked read-write. (It is read-only after relocation, not before.) When using the standard linker scripts this usually doesn't matter since the output section is among other read-write sections and not page aligned. However, it might matter in the extraordinary case of the dynamic section being the only .data.rel.ro section with the output section just happening to be page aligned and a multiple of a page in size. In that case the output section would be read-only, and live it its own read-only PT_LOAD segment, which is incorrect. * elflink.c (_bfd_elf_create_dynamic_sections): Don't make dynamic .data.rel.ro read-only. * elf32-arm.c (elf32_arm_finish_dynamic_symbol): Compare section rather than section flags when deciding where copy reloc goes. * elf32-cris.c (elf_cris_finish_dynamic_symbol): Likewise. * elf32-hppa.c (elf32_hppa_finish_dynamic_symbol): Likewise. * elf32-i386.c (elf_i386_finish_dynamic_symbol): Likewise. * elf32-metag.c (elf_metag_finish_dynamic_symbol): Likewise. * elf32-microblaze.c (microblaze_elf_finish_dynamic_symbol): Likewise. * elf32-nios2.c (nios2_elf32_finish_dynamic_symbol): Likewise. * elf32-or1k.c (or1k_elf_finish_dynamic_symbol): Likewise. * elf32-ppc.c (ppc_elf_finish_dynamic_symbol): Likewise. * elf32-s390.c (elf_s390_finish_dynamic_symbol): Likewise. * elf32-tic6x.c (elf32_tic6x_finish_dynamic_symbol): Likewise. * elf32-tilepro.c (tilepro_elf_finish_dynamic_symbol): Likewise. * elf64-ppc.c (ppc64_elf_finish_dynamic_symbol): Likewise. * elf64-s390.c (elf_s390_finish_dynamic_symbol): Likewise. * elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Likewise. * elfnn-aarch64.c (elfNN_aarch64_finish_dynamic_symbol): Likewise. * elfnn-riscv.c (riscv_elf_finish_dynamic_symbol): Likewise. * elfxx-mips.c (_bfd_mips_vxworks_finish_dynamic_symbol): Likewise. * elfxx-sparc.c (_bfd_sparc_elf_finish_dynamic_symbol): Likewise. * elfxx-tilegx.c (tilegx_elf_finish_dynamic_symbol): Likewise.
Diffstat (limited to 'bfd/elflink.c')
-rw-r--r--bfd/elflink.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 027ce83..776357f 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -424,7 +424,7 @@ _bfd_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
initialize them at run time. The linker script puts the .dynbss
section into the .bss section of the final image. */
s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
- (SEC_ALLOC | SEC_LINKER_CREATED));
+ SEC_ALLOC | SEC_LINKER_CREATED);
if (s == NULL)
return FALSE;
htab->sdynbss = s;
@@ -432,11 +432,10 @@ _bfd_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
if (bed->want_dynrelro)
{
/* Similarly, but for symbols that were originally in read-only
- sections. */
+ sections. This section doesn't really need to have contents,
+ but make it like other .data.rel.ro sections. */
s = bfd_make_section_anyway_with_flags (abfd, ".data.rel.ro",
- (SEC_ALLOC | SEC_READONLY
- | SEC_HAS_CONTENTS
- | SEC_LINKER_CREATED));
+ flags);
if (s == NULL)
return FALSE;
htab->sdynrelro = s;