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authorAlexandre Oliva <aoliva@redhat.com>2004-02-24 16:39:01 +0000
committerAlexandre Oliva <aoliva@redhat.com>2004-02-24 16:39:01 +0000
commit072c89031ac1a43428f4984f4895d891ebc95026 (patch)
treefc23192413df6e9587382f595cd6be9fd4565cc3 /bfd/elf32-frv.c
parent74aee4eb9f6cfbe8eee711bf67cd165898de6804 (diff)
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* elf32-frv.c (FRV_SYM_LOCAL): Weak undefined doesn't imply local.
(_frv_emit_got_relocs_plt_entries): Decay relocation to protected function's descriptor to symbol+offset, and map local undefweak symbol to NULL function descriptor. (elf32_frv_relocate_section): Likewise.
Diffstat (limited to 'bfd/elf32-frv.c')
-rw-r--r--bfd/elf32-frv.c252
1 files changed, 140 insertions, 112 deletions
diff --git a/bfd/elf32-frv.c b/bfd/elf32-frv.c
index 488438e..b8c325f 100644
--- a/bfd/elf32-frv.c
+++ b/bfd/elf32-frv.c
@@ -659,7 +659,6 @@ frv_elf_link_hash_table_create (bfd *abfd)
#define FRV_SYM_LOCAL(INFO, H) \
(_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
|| ! elf_hash_table (INFO)->dynamic_sections_created \
- || (H)->root.type == bfd_link_hash_undefweak \
|| (/* The condition below is an ugly hack to get .scommon data to
be regarded as local. For some reason the
ELF_LINK_HASH_DEF_REGULAR bit is not set on such common
@@ -1029,47 +1028,61 @@ _frv_emit_got_relocs_plt_entries (struct frv_pic_relocs_info *entry,
if (entry->fdgot_entry)
{
int reloc, idx;
- bfd_vma ad;
+ bfd_vma ad = 0;
- /* If the symbol is dynamic and there may be dynamic symbol
- resolution because we are or are linked with a shared
- library, emit a FUNCDESC relocation such that the dynamic
- linker will allocate the function descriptor. */
- if (entry->symndx == -1 && ! FRV_FUNCDESC_LOCAL (info, entry->d.h))
+ if (! (entry->symndx == -1
+ && entry->d.h->root.type == bfd_link_hash_undefweak
+ && FRV_SYM_LOCAL (info, entry->d.h)))
{
- reloc = R_FRV_FUNCDESC;
- idx = dynindx;
- ad = addend;
- if (ad)
- return FALSE;
- }
- else
- {
- /* Otherwise, we know we have a private function descriptor,
- so reference it directly. */
- if (elf_hash_table (info)->dynamic_sections_created)
- BFD_ASSERT (entry->privfd);
- reloc = R_FRV_32;
- idx = elf_section_data (frv_got_section (info)->output_section)
- ->dynindx;
- ad = frv_got_section (info)->output_offset +
- frv_got_initial_offset (info) + entry->fd_entry;
- }
-
- /* If there is room for dynamic symbol resolution, emit the
- dynamic relocation. However, if we're linking an executable
- at a fixed location, we won't have emitted a dynamic symbol
- entry for the got section, so idx will be zero, which means
- we can and should compute the address of the private
- descriptor ourselves. */
- if (info->executable && !info->pie
- && (entry->symndx != -1 || FRV_FUNCDESC_LOCAL (info, entry->d.h)))
- {
- if (entry->symndx == -1
- && entry->d.h->root.type == bfd_link_hash_undefweak)
- ad = 0;
+ /* If the symbol is dynamic and there may be dynamic symbol
+ resolution because we are, or are linked with, a shared
+ library, emit a FUNCDESC relocation such that the dynamic
+ linker will allocate the function descriptor. If the
+ symbol needs a non-local function descriptor but binds
+ locally (e.g., its visibility is protected, emit a
+ dynamic relocation decayed to section+offset. */
+ if (entry->symndx == -1 && ! FRV_FUNCDESC_LOCAL (info, entry->d.h)
+ && FRV_SYM_LOCAL (info, entry->d.h)
+ && !(info->executable && !info->pie))
+ {
+ reloc = R_FRV_FUNCDESC;
+ idx = elf_section_data (entry->d.h->root.u.def.section
+ ->output_section)->dynindx;
+ ad = entry->d.h->root.u.def.section->output_offset
+ + entry->d.h->root.u.def.value;
+ }
+ else if (entry->symndx == -1
+ && ! FRV_FUNCDESC_LOCAL (info, entry->d.h))
+ {
+ reloc = R_FRV_FUNCDESC;
+ idx = dynindx;
+ ad = addend;
+ if (ad)
+ return FALSE;
+ }
else
{
+ /* Otherwise, we know we have a private function descriptor,
+ so reference it directly. */
+ if (elf_hash_table (info)->dynamic_sections_created)
+ BFD_ASSERT (entry->privfd);
+ reloc = R_FRV_32;
+ idx = elf_section_data (frv_got_section (info)
+ ->output_section)->dynindx;
+ ad = frv_got_section (info)->output_offset
+ + frv_got_initial_offset (info) + entry->fd_entry;
+ }
+
+ /* If there is room for dynamic symbol resolution, emit the
+ dynamic relocation. However, if we're linking an
+ executable at a fixed location, we won't have emitted a
+ dynamic symbol entry for the got section, so idx will be
+ zero, which means we can and should compute the address
+ of the private descriptor ourselves. */
+ if (info->executable && !info->pie
+ && (entry->symndx != -1
+ || FRV_FUNCDESC_LOCAL (info, entry->d.h)))
+ {
ad += frv_got_section (info)->output_section->vma;
_frv_add_rofixup (output_bfd, frv_gotfixup_section (info),
frv_got_section (info)->output_section->vma
@@ -1077,17 +1090,17 @@ _frv_emit_got_relocs_plt_entries (struct frv_pic_relocs_info *entry,
+ frv_got_initial_offset (info)
+ entry->fdgot_entry);
}
+ else
+ _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info),
+ _bfd_elf_section_offset
+ (output_bfd, info,
+ frv_got_section (info),
+ frv_got_initial_offset (info)
+ + entry->fdgot_entry)
+ + frv_got_section (info)->output_section->vma
+ + frv_got_section (info)->output_offset,
+ reloc, idx, ad);
}
- else
- _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info),
- _bfd_elf_section_offset
- (output_bfd, info,
- frv_got_section (info),
- frv_got_initial_offset (info)
- + entry->fdgot_entry)
- + frv_got_section (info)->output_section->vma
- + frv_got_section (info)->output_offset,
- reloc, idx, ad);
bfd_put_32 (output_bfd, ad,
frv_got_section (info)->contents
@@ -2005,88 +2018,103 @@ elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section,
int dynindx;
bfd_vma addend = rel->r_addend;
- /* If the symbol is dynamic and there may be dynamic
- symbol resolution because we are or are linked with a
- shared library, emit a FUNCDESC relocation such that
- the dynamic linker will allocate the function
- descriptor. */
- if (h && ! FRV_FUNCDESC_LOCAL (info, h))
+ if (! (h && h->root.type == bfd_link_hash_undefweak
+ && FRV_SYM_LOCAL (info, h)))
{
- if (addend)
+ /* If the symbol is dynamic and there may be dynamic
+ symbol resolution because we are or are linked with a
+ shared library, emit a FUNCDESC relocation such that
+ the dynamic linker will allocate the function
+ descriptor. If the symbol needs a non-local function
+ descriptor but binds locally (e.g., its visibility is
+ protected, emit a dynamic relocation decayed to
+ section+offset. */
+ if (h && ! FRV_FUNCDESC_LOCAL (info, h)
+ && FRV_SYM_LOCAL (info, h)
+ && !(info->executable && !info->pie))
{
- info->callbacks->warning
- (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"),
- name, input_bfd, input_section, rel->r_offset);
- return FALSE;
+ dynindx = elf_section_data (h->root.u.def.section
+ ->output_section)->dynindx;
+ addend += h->root.u.def.section->output_offset
+ + h->root.u.def.value;
+ }
+ else if (h && ! FRV_FUNCDESC_LOCAL (info, h))
+ {
+ if (addend)
+ {
+ info->callbacks->warning
+ (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"),
+ name, input_bfd, input_section, rel->r_offset);
+ return FALSE;
+ }
+ dynindx = h->dynindx;
+ }
+ else
+ {
+ /* Otherwise, we know we have a private function
+ descriptor, so reference it directly. */
+ BFD_ASSERT (picrel->privfd);
+ r_type = R_FRV_32;
+ dynindx = elf_section_data (frv_got_section (info)
+ ->output_section)->dynindx;
+ addend = frv_got_section (info)->output_offset
+ + frv_got_initial_offset (info)
+ + picrel->fd_entry;
}
- dynindx = h->dynindx;
- }
- else
- {
- /* Otherwise, we know we have a private function
- descriptor, so reference it directly. */
- BFD_ASSERT (picrel->privfd);
- r_type = R_FRV_32;
- dynindx = elf_section_data (frv_got_section
- (info)->output_section)->dynindx;
- addend = frv_got_section (info)->output_offset
- + frv_got_initial_offset (info)
- + picrel->fd_entry;
- }
- /* If there is room for dynamic symbol resolution, emit
- the dynamic relocation. However, if we're linking an
- executable at a fixed location, we won't have emitted a
- dynamic symbol entry for the got section, so idx will
- be zero, which means we can and should compute the
- address of the private descriptor ourselves. */
- if (info->executable && !info->pie
- && (!h || FRV_FUNCDESC_LOCAL (info, h)))
- {
- addend += frv_got_section (info)->output_section->vma;
- if ((bfd_get_section_flags (output_bfd,
- input_section->output_section)
- & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
+ /* If there is room for dynamic symbol resolution, emit
+ the dynamic relocation. However, if we're linking an
+ executable at a fixed location, we won't have emitted a
+ dynamic symbol entry for the got section, so idx will
+ be zero, which means we can and should compute the
+ address of the private descriptor ourselves. */
+ if (info->executable && !info->pie
+ && (!h || FRV_FUNCDESC_LOCAL (info, h)))
+ {
+ addend += frv_got_section (info)->output_section->vma;
+ if ((bfd_get_section_flags (output_bfd,
+ input_section->output_section)
+ & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
+ {
+ if (_frv_osec_readonly_p (output_bfd,
+ input_section->output_section))
+ {
+ info->callbacks->warning
+ (info,
+ _("cannot emit fixups in read-only section"),
+ name, input_bfd, input_section, rel->r_offset);
+ return FALSE;
+ }
+ _frv_add_rofixup (output_bfd,
+ frv_gotfixup_section (info),
+ _bfd_elf_section_offset
+ (output_bfd, info,
+ input_section, rel->r_offset)
+ + input_section->output_section->vma
+ + input_section->output_offset);
+ }
+ }
+ else if ((bfd_get_section_flags (output_bfd,
+ input_section->output_section)
+ & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
{
if (_frv_osec_readonly_p (output_bfd,
input_section->output_section))
{
info->callbacks->warning
(info,
- _("cannot emit fixups in read-only section"),
+ _("cannot emit dynamic relocations in read-only section"),
name, input_bfd, input_section, rel->r_offset);
return FALSE;
}
- if (! h || h->root.type != bfd_link_hash_undefweak)
- _frv_add_rofixup (output_bfd,
- frv_gotfixup_section (info),
+ _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info),
_bfd_elf_section_offset
(output_bfd, info,
input_section, rel->r_offset)
+ input_section->output_section->vma
- + input_section->output_offset);
- }
- }
- else if ((bfd_get_section_flags (output_bfd,
- input_section->output_section)
- & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
- {
- if (_frv_osec_readonly_p (output_bfd,
- input_section->output_section))
- {
- info->callbacks->warning
- (info,
- _("cannot emit dynamic relocations in read-only section"),
- name, input_bfd, input_section, rel->r_offset);
- return FALSE;
+ + input_section->output_offset,
+ r_type, dynindx, addend);
}
- _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info),
- _bfd_elf_section_offset
- (output_bfd, info,
- input_section, rel->r_offset)
- + input_section->output_section->vma
- + input_section->output_offset,
- r_type, dynindx, addend);
}
/* We want the addend in-place because dynamic