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authorAlan Modra <amodra@gmail.com>2013-03-28 13:36:32 +0000
committerAlan Modra <amodra@gmail.com>2013-03-28 13:36:32 +0000
commit19e08130eec4abee547e82c5485603423deea193 (patch)
treeb2ea2b92811daf8bfd72336fae8fbaad98d499eb /bfd/elf64-ppc.c
parent7f7cc26500d04c09295d1229706c4fc35697fc8a (diff)
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* elf64-ppc.c (struct ppc_dyn_relocs): New.
(ppc64_elf_check_relocs): Separate dynrel counts for local syms into ifunc and non-ifunc. (dec_dynrel_count): Pass in sym rather than sym_sec. Handle separate ifunc/non-ifunc dynrel counts. (allocate_got): Always use reliplt for ifunc. (allocate_dynrelocs): Likewise. (ppc64_elf_size_dynamic_sections): Likewise. (ppc64_elf_layout_multitoc): Likewise. (ppc64_elf_relocate_section): Likewise.
Diffstat (limited to 'bfd/elf64-ppc.c')
-rw-r--r--bfd/elf64-ppc.c264
1 files changed, 163 insertions, 101 deletions
diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index 9d7c79e..2826d83 100644
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -3638,6 +3638,21 @@ struct ppc_branch_hash_entry {
unsigned int iter;
};
+/* Used to track dynamic relocations for local symbols. */
+struct ppc_dyn_relocs
+{
+ struct ppc_dyn_relocs *next;
+
+ /* The input section of the reloc. */
+ asection *sec;
+
+ /* Total number of relocs copied for the input section. */
+ unsigned int count : 31;
+
+ /* Whether this entry is for STT_GNU_IFUNC symbols. */
+ unsigned int ifunc : 1;
+};
+
struct ppc_link_hash_entry
{
struct elf_link_hash_entry elf;
@@ -5448,9 +5463,6 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
|| (!info->shared
&& ifunc != NULL))
{
- struct elf_dyn_relocs *p;
- struct elf_dyn_relocs **head;
-
/* We must copy these reloc types into the output file.
Create a reloc section in dynobj and make room for
this reloc. */
@@ -5467,13 +5479,34 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
relocations we need for this symbol. */
if (h != NULL)
{
+ struct elf_dyn_relocs *p;
+ struct elf_dyn_relocs **head;
+
head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
+ p = *head;
+ if (p == NULL || p->sec != sec)
+ {
+ p = bfd_alloc (htab->elf.dynobj, sizeof *p);
+ if (p == NULL)
+ return FALSE;
+ p->next = *head;
+ *head = p;
+ p->sec = sec;
+ p->count = 0;
+ p->pc_count = 0;
+ }
+ p->count += 1;
+ if (!must_be_dyn_reloc (info, r_type))
+ p->pc_count += 1;
}
else
{
/* Track dynamic relocs needed for local syms too.
We really need local syms available to do this
easily. Oh well. */
+ struct ppc_dyn_relocs *p;
+ struct ppc_dyn_relocs **head;
+ bfd_boolean is_ifunc;
asection *s;
void *vpp;
Elf_Internal_Sym *isym;
@@ -5488,25 +5521,24 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
s = sec;
vpp = &elf_section_data (s)->local_dynrel;
- head = (struct elf_dyn_relocs **) vpp;
- }
-
- p = *head;
- if (p == NULL || p->sec != sec)
- {
- p = bfd_alloc (htab->elf.dynobj, sizeof *p);
- if (p == NULL)
- return FALSE;
- p->next = *head;
- *head = p;
- p->sec = sec;
- p->count = 0;
- p->pc_count = 0;
+ head = (struct ppc_dyn_relocs **) vpp;
+ is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
+ p = *head;
+ if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
+ p = p->next;
+ if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
+ {
+ p = bfd_alloc (htab->elf.dynobj, sizeof *p);
+ if (p == NULL)
+ return FALSE;
+ p->next = *head;
+ *head = p;
+ p->sec = sec;
+ p->ifunc = is_ifunc;
+ p->count = 0;
+ }
+ p->count += 1;
}
-
- p->count += 1;
- if (!must_be_dyn_reloc (info, r_type))
- p->pc_count += 1;
}
break;
@@ -6951,7 +6983,7 @@ adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
}
/* Handles decrementing dynamic reloc counts for the reloc specified by
- R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
+ R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
have already been determined. */
static bfd_boolean
@@ -6960,11 +6992,10 @@ dec_dynrel_count (bfd_vma r_info,
struct bfd_link_info *info,
Elf_Internal_Sym **local_syms,
struct elf_link_hash_entry *h,
- asection *sym_sec)
+ Elf_Internal_Sym *sym)
{
enum elf_ppc64_reloc_type r_type;
- struct elf_dyn_relocs *p;
- struct elf_dyn_relocs **pp;
+ asection *sym_sec = NULL;
/* Can this reloc be dynamic? This switch, and later tests here
should be kept in sync with the code in check_relocs. */
@@ -7019,7 +7050,6 @@ dec_dynrel_count (bfd_vma r_info,
if (local_syms != NULL)
{
unsigned long r_symndx;
- Elf_Internal_Sym *sym;
bfd *ibfd = sec->owner;
r_symndx = ELF64_R_SYM (r_info);
@@ -7043,40 +7073,62 @@ dec_dynrel_count (bfd_vma r_info,
return TRUE;
if (h != NULL)
- pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
- else
{
- if (sym_sec != NULL)
- {
- void *vpp = &elf_section_data (sym_sec)->local_dynrel;
- pp = (struct elf_dyn_relocs **) vpp;
- }
- else
+ struct elf_dyn_relocs *p;
+ struct elf_dyn_relocs **pp;
+ pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
+
+ /* elf_gc_sweep may have already removed all dyn relocs associated
+ with local syms for a given section. Also, symbol flags are
+ changed by elf_gc_sweep_symbol, confusing the test above. Don't
+ report a dynreloc miscount. */
+ if (*pp == NULL && info->gc_sections)
+ return TRUE;
+
+ while ((p = *pp) != NULL)
{
- void *vpp = &elf_section_data (sec)->local_dynrel;
- pp = (struct elf_dyn_relocs **) vpp;
+ if (p->sec == sec)
+ {
+ if (!must_be_dyn_reloc (info, r_type))
+ p->pc_count -= 1;
+ p->count -= 1;
+ if (p->count == 0)
+ *pp = p->next;
+ return TRUE;
+ }
+ pp = &p->next;
}
}
+ else
+ {
+ struct ppc_dyn_relocs *p;
+ struct ppc_dyn_relocs **pp;
+ void *vpp;
+ bfd_boolean is_ifunc;
- /* elf_gc_sweep may have already removed all dyn relocs associated
- with local syms for a given section. Also, symbol flags are
- changed by elf_gc_sweep_symbol, confusing the test above. Don't
- report a dynreloc miscount. */
- if (*pp == NULL && info->gc_sections)
- return TRUE;
+ if (local_syms == NULL)
+ sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+ if (sym_sec == NULL)
+ sym_sec = sec;
- while ((p = *pp) != NULL)
- {
- if (p->sec == sec)
+ vpp = &elf_section_data (sym_sec)->local_dynrel;
+ pp = (struct ppc_dyn_relocs **) vpp;
+
+ if (*pp == NULL && info->gc_sections)
+ return TRUE;
+
+ is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
+ while ((p = *pp) != NULL)
{
- if (!must_be_dyn_reloc (info, r_type))
- p->pc_count -= 1;
- p->count -= 1;
- if (p->count == 0)
- *pp = p->next;
- return TRUE;
+ if (p->sec == sec && p->ifunc == is_ifunc)
+ {
+ p->count -= 1;
+ if (p->count == 0)
+ *pp = p->next;
+ return TRUE;
+ }
+ pp = &p->next;
}
- pp = &p->next;
}
info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
@@ -7409,7 +7461,7 @@ ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
if (!NO_OPD_RELOCS
&& !info->relocatable
&& !dec_dynrel_count (rel->r_info, sec, info,
- NULL, h, sym_sec))
+ NULL, h, sym))
goto error_ret;
}
else
@@ -8016,13 +8068,13 @@ ppc64_elf_tls_optimize (struct bfd_link_info *info)
/* If we got rid of a DTPMOD/DTPREL reloc pair then
we'll lose one or two dyn relocs. */
if (!dec_dynrel_count (rel->r_info, sec, info,
- NULL, h, sym_sec))
+ NULL, h, sym))
return FALSE;
if (tls_set == (TLS_EXPLICIT | TLS_GD))
{
if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
- NULL, h, sym_sec))
+ NULL, h, sym))
return FALSE;
}
}
@@ -8814,19 +8866,18 @@ allocate_got (struct elf_link_hash_entry *h,
got->size += entsize;
dyn = htab->elf.dynamic_sections_created;
- if ((info->shared
- || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
- && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak))
+ if (h->type == STT_GNU_IFUNC)
{
- asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
- relgot->size += rentsize;
+ htab->reliplt->size += rentsize;
+ htab->got_reli_size += rentsize;
}
- else if (h->type == STT_GNU_IFUNC)
+ else if ((info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
+ && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
{
- asection *relgot = htab->reliplt;
+ asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
relgot->size += rentsize;
- htab->got_reli_size += rentsize;
}
}
@@ -9090,7 +9141,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
asection *sreloc = elf_section_data (p->sec)->sreloc;
- if (!htab->elf.dynamic_sections_created)
+ if (eh->elf.type == STT_GNU_IFUNC)
sreloc = htab->reliplt;
sreloc->size += p->count * sizeof (Elf64_External_Rela);
}
@@ -9169,14 +9220,13 @@ ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
unsigned char *lgot_masks;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
- asection *srel;
if (!is_ppc64_elf (ibfd))
continue;
for (s = ibfd->sections; s != NULL; s = s->next)
{
- struct elf_dyn_relocs *p;
+ struct ppc_dyn_relocs *p;
for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
{
@@ -9190,8 +9240,8 @@ ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
}
else if (p->count != 0)
{
- srel = elf_section_data (p->sec)->sreloc;
- if (!htab->elf.dynamic_sections_created)
+ asection *srel = elf_section_data (p->sec)->sreloc;
+ if (p->ifunc)
srel = htab->reliplt;
srel->size += p->count * sizeof (Elf64_External_Rela);
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
@@ -9211,7 +9261,6 @@ ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
end_local_plt = local_plt + locsymcount;
lgot_masks = (unsigned char *) end_local_plt;
s = ppc64_elf_tdata (ibfd)->got;
- srel = ppc64_elf_tdata (ibfd)->relgot;
for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
{
struct got_entry **pent, *ent;
@@ -9227,19 +9276,25 @@ ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
}
else
{
- unsigned int num = 1;
+ unsigned int ent_size = 8;
+ unsigned int rel_size = sizeof (Elf64_External_Rela);
+
ent->got.offset = s->size;
if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
- num = 2;
- s->size += num * 8;
- if (info->shared)
- srel->size += num * sizeof (Elf64_External_Rela);
- else if ((*lgot_masks & PLT_IFUNC) != 0)
{
- htab->reliplt->size
- += num * sizeof (Elf64_External_Rela);
- htab->got_reli_size
- += num * sizeof (Elf64_External_Rela);
+ ent_size *= 2;
+ rel_size *= 2;
+ }
+ s->size += ent_size;
+ if ((*lgot_masks & PLT_IFUNC) != 0)
+ {
+ htab->reliplt->size += rel_size;
+ htab->got_reli_size += rel_size;
+ }
+ else if (info->shared)
+ {
+ asection *srel = ppc64_elf_tdata (ibfd)->relgot;
+ srel->size += rel_size;
}
pent = &ent->next;
}
@@ -10738,7 +10793,7 @@ ppc64_elf_layout_multitoc (struct bfd_link_info *info)
unsigned char *lgot_masks;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
- asection *s, *srel;
+ asection *s;
if (!is_ppc64_elf (ibfd))
continue;
@@ -10754,26 +10809,31 @@ ppc64_elf_layout_multitoc (struct bfd_link_info *info)
end_local_plt = local_plt + locsymcount;
lgot_masks = (unsigned char *) end_local_plt;
s = ppc64_elf_tdata (ibfd)->got;
- srel = ppc64_elf_tdata (ibfd)->relgot;
for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
{
struct got_entry *ent;
for (ent = *lgot_ents; ent != NULL; ent = ent->next)
{
- unsigned int num = 1;
+ unsigned int ent_size = 8;
+ unsigned int rel_size = sizeof (Elf64_External_Rela);
+
ent->got.offset = s->size;
if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
- num = 2;
- s->size += num * 8;
- if (info->shared)
- srel->size += num * sizeof (Elf64_External_Rela);
- else if ((*lgot_masks & PLT_IFUNC) != 0)
{
- htab->reliplt->size
- += num * sizeof (Elf64_External_Rela);
- htab->got_reli_size
- += num * sizeof (Elf64_External_Rela);
+ ent_size *= 2;
+ rel_size *= 2;
+ }
+ s->size += ent_size;
+ if ((*lgot_masks & PLT_IFUNC) != 0)
+ {
+ htab->reliplt->size += rel_size;
+ htab->got_reli_size += rel_size;
+ }
+ else if (info->shared)
+ {
+ asection *srel = ppc64_elf_tdata (ibfd)->relgot;
+ srel->size += rel_size;
}
}
}
@@ -13208,15 +13268,15 @@ ppc64_elf_relocate_section (bfd *output_bfd,
ifunc = (h != NULL
? h->elf.type == STT_GNU_IFUNC
: ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
- if ((info->shared || indx != 0)
- && (h == NULL
- || (tls_type == (TLS_TLS | TLS_LD)
- && !h->elf.def_dynamic)
- || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
- || h->elf.root.type != bfd_link_hash_undefweak))
- relgot = ppc64_elf_tdata (ent->owner)->relgot;
- else if (ifunc)
+ if (ifunc)
relgot = htab->reliplt;
+ else if ((info->shared || indx != 0)
+ && (h == NULL
+ || (tls_type == (TLS_TLS | TLS_LD)
+ && !h->elf.def_dynamic)
+ || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
+ || h->elf.root.type != bfd_link_hash_undefweak))
+ relgot = ppc64_elf_tdata (ent->owner)->relgot;
if (relgot != NULL)
{
outrel.r_offset = (got->output_section->vma
@@ -13630,7 +13690,9 @@ ppc64_elf_relocate_section (bfd *output_bfd,
}
sreloc = elf_section_data (input_section)->sreloc;
- if (!htab->elf.dynamic_sections_created)
+ if (h != NULL
+ ? h->elf.type == STT_GNU_IFUNC
+ : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
sreloc = htab->reliplt;
if (sreloc == NULL)
abort ();