/* Contexts in which symbol is used in the GOT (or TOC).
Linker optimization will result in various transformations. */
#define TLS_TLS 1 /* Any TLS reloc. */
-#define TLS_GD_LD 2 /* GD or LD reloc requiring 2 got slots. */
+#define TLS_GD 2 /* GD reloc. */
#define TLS_LD 4 /* LD reloc. */
#define TLS_TPREL 8 /* TPREL reloc, => IE. */
#define TLS_DTPREL 16 /* DTPREL reloc, => LD. */
#define TLS_EXPLICIT 32 /* Marks TOC section relocs. */
+#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
char tls_type;
};
static bfd_boolean get_sym_h
PARAMS ((struct elf_link_hash_entry **, Elf_Internal_Sym **, asection **,
char **, Elf_Internal_Sym **, unsigned long, bfd *));
-static bfd_boolean get_tls_type
+static int get_tls_type
PARAMS ((char **, Elf_Internal_Sym **, const Elf_Internal_Rela *, bfd *));
static bfd_boolean allocate_dynrelocs
PARAMS ((struct elf_link_hash_entry *, PTR));
htab->have_undefweak = 0;
htab->stub_iteration = 0;
htab->sym_sec.abfd = NULL;
+ /* Initializing two fields of the union is just cosmetic. We really
+ only care about glist, but when compiled on a 32-bit host the
+ bfd_vma fields are larger. Setting the bfd_vma to zero makes
+ debugger inspection of these fields look nicer. */
+ htab->elf.init_refcount.refcount = 0;
htab->elf.init_refcount.glist = NULL;
+ htab->elf.init_offset.offset = 0;
htab->elf.init_offset.glist = NULL;
return &htab->elf.root;
case R_PPC64_GOT_TLSLD16_HI:
case R_PPC64_GOT_TLSLD16_HA:
htab->tlsld_got.refcount += 1;
- tls_type = TLS_TLS | TLS_GD_LD | TLS_LD;
+ tls_type = TLS_TLS | TLS_LD;
goto dogottls;
case R_PPC64_GOT_TLSGD16:
case R_PPC64_GOT_TLSGD16_LO:
case R_PPC64_GOT_TLSGD16_HI:
case R_PPC64_GOT_TLSGD16_HA:
- tls_type = TLS_TLS | TLS_GD_LD;
+ tls_type = TLS_TLS | TLS_GD;
goto dogottls;
case R_PPC64_GOT_TPREL16_DS:
if (rel + 1 < rel_end
&& rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
&& rel[1].r_offset == rel->r_offset + 8)
- tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD_LD;
+ tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
else
- tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD_LD | TLS_LD;
+ tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
goto dotlstoc;
case R_PPC64_DTPREL64:
if (ppc64_elf_section_data (sec)->t_symndx == NULL)
{
- bfd_size_type amt = sec->_raw_size * sizeof (unsigned) / 8;
+ /* One extra to simplify get_tls_type. */
+ bfd_size_type amt = sec->_raw_size * sizeof (unsigned) / 8 + 1;
ppc64_elf_section_data (sec)->t_symndx
= (unsigned *) bfd_zalloc (abfd, amt);
if (ppc64_elf_section_data (sec)->t_symndx == NULL)
}
BFD_ASSERT (rel->r_offset % 8 == 0);
ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
+
+ /* Mark the second slot of a GD or LD entry.
+ -1 to indicate GD and -2 to indicate LD. */
+ if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
+ ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
+ else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
+ ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
goto dodyn;
case R_PPC64_TPREL16:
case R_PPC64_GOT_TLSLD16_HI:
case R_PPC64_GOT_TLSLD16_HA:
htab->tlsld_got.refcount -= 1;
- tls_type = TLS_TLS | TLS_GD_LD | TLS_LD;
+ tls_type = TLS_TLS | TLS_LD;
goto dogot;
case R_PPC64_GOT_TLSGD16:
case R_PPC64_GOT_TLSGD16_LO:
case R_PPC64_GOT_TLSGD16_HI:
case R_PPC64_GOT_TLSGD16_HA:
- tls_type = TLS_TLS | TLS_GD_LD;
+ tls_type = TLS_TLS | TLS_GD;
goto dogot;
case R_PPC64_GOT_TPREL16_DS:
return TRUE;
}
-static bfd_boolean
+/* Returns TLS_TYPE for the given REL symbol. Function return is 0 on
+ error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
+ type suitable for optimization, and 1 otherwise. */
+
+static int
get_tls_type (tls_type, locsymsp, rel, ibfd)
char **tls_type;
Elf_Internal_Sym **locsymsp;
bfd *ibfd;
{
unsigned long r_symndx;
+ unsigned int next_r;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
asection *sec;
r_symndx = ELF64_R_SYM (rel->r_info);
if (!get_sym_h (&h, &sym, &sec, tls_type, locsymsp, r_symndx, ibfd))
- return FALSE;
+ return 0;
if ((*tls_type != NULL && **tls_type != 0)
|| sec == NULL
|| ppc64_elf_section_data (sec)->t_symndx == NULL)
- return TRUE;
+ return 1;
/* Look inside a TOC section too. */
if (h != NULL)
off += rel->r_addend;
BFD_ASSERT (off % 8 == 0);
r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
- return get_sym_h (&h, &sym, NULL, tls_type, locsymsp, r_symndx, ibfd);
+ next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
+ if (!get_sym_h (&h, &sym, &sec, tls_type, locsymsp, r_symndx, ibfd))
+ return 0;
+ if (h == NULL
+ || h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ if (next_r == (unsigned) -1)
+ return 2;
+ if (next_r == (unsigned) -2
+ && (h == NULL
+ || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
+ return 3;
+ }
+ return 1;
}
bfd_boolean
return TRUE;
}
-/* Run through all the TLS relocs looking for optimization
- opportunities. The linker has been hacked (see ppc64elf.em) to do
- a preliminary section layout so that we know the TLS segment
- offsets. We can't optimize earlier because some optimizations need
- to know the tp offset, and we need to optimize before allocating
- dynamic relocations. */
+/* Set htab->tls_sec. */
bfd_boolean
-ppc64_elf_tls_optimize (obfd, info)
+ppc64_elf_tls_setup (obfd, info)
bfd *obfd;
struct bfd_link_info *info;
{
asection *tls;
- bfd *ibfd;
- asection *sec;
struct ppc_link_hash_table *htab;
- if (info->relocateable)
- return TRUE;
-
for (tls = obfd->sections; tls != NULL; tls = tls->next)
if ((tls->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
== (SEC_THREAD_LOCAL | SEC_LOAD))
break;
- if (tls == NULL)
- return TRUE;
htab = ppc_hash_table (info);
htab->tls_sec = tls;
+ return tls != NULL;
+}
- if (info->shared)
+/* Run through all the TLS relocs looking for optimization
+ opportunities. The linker has been hacked (see ppc64elf.em) to do
+ a preliminary section layout so that we know the TLS segment
+ offsets. We can't optimize earlier because some optimizations need
+ to know the tp offset, and we need to optimize before allocating
+ dynamic relocations. */
+
+bfd_boolean
+ppc64_elf_tls_optimize (obfd, info)
+ bfd *obfd ATTRIBUTE_UNUSED;
+ struct bfd_link_info *info;
+{
+ bfd *ibfd;
+ asection *sec;
+ struct ppc_link_hash_table *htab;
+
+ if (info->relocateable || info->shared)
return TRUE;
+ htab = ppc_hash_table (info);
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
{
Elf_Internal_Sym *locsyms = NULL;
char *tls_type;
char tls_set, tls_clear, got_tls_type = 0;
bfd_vma value;
- bfd_boolean ok_tprel;
+ bfd_boolean ok_tprel, is_local;
r_symndx = ELF64_R_SYM (rel->r_info);
if (!get_sym_h (&h, &sym, &sym_sec, &tls_type, &locsyms,
}
else
value = sym->st_value;
+
ok_tprel = FALSE;
- if (sym_sec != NULL && sym_sec->output_section != NULL)
+ is_local = FALSE;
+ if (h == NULL
+ || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
{
+ is_local = TRUE;
value += sym_sec->output_offset;
value += sym_sec->output_section->vma;
value -= htab->tls_sec->vma;
case R_PPC64_GOT_TLSLD16_LO:
case R_PPC64_GOT_TLSLD16_HI:
case R_PPC64_GOT_TLSLD16_HA:
+ /* These relocs should never be against a symbol
+ defined in a shared lib. Leave them alone if
+ that turns out to be the case. */
+ if (!is_local)
+ continue;
+
htab->tlsld_got.refcount -= 1;
- if (ok_tprel)
- /* LD -> LE */
- tls_set = 0;
- else
- /* We still need a GOT entry as the offset is
- too big. ie. LD -> IE. */
- tls_set = TLS_TLS | TLS_TPREL;
- tls_clear = TLS_GD_LD;
- got_tls_type = TLS_TLS | TLS_GD_LD | TLS_LD;
+ /* LD -> LE */
+ tls_set = 0;
+ tls_clear = TLS_LD;
+ got_tls_type = TLS_TLS | TLS_LD;
expecting_tls_get_addr = 1;
break;
case R_PPC64_GOT_TLSGD16_LO:
case R_PPC64_GOT_TLSGD16_HI:
case R_PPC64_GOT_TLSGD16_HA:
- if (ok_tprel
- && (h == NULL
- || ((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) != 0
- && ((h->elf_link_hash_flags
- & ELF_LINK_FORCED_LOCAL) != 0
- || !info->shared
- || info->symbolic))))
+ if (ok_tprel)
/* GD -> LE */
tls_set = 0;
else
/* GD -> IE */
- tls_set = TLS_TLS | TLS_TPREL;
- tls_clear = TLS_GD_LD;
- got_tls_type = TLS_TLS | TLS_GD_LD;
+ tls_set = TLS_TLS | TLS_TPRELGD;
+ tls_clear = TLS_GD;
+ got_tls_type = TLS_TLS | TLS_GD;
expecting_tls_get_addr = 1;
break;
{
/* Check for toc tls entries. */
char *toc_tls;
+ int retval;
- if (!get_tls_type (&toc_tls, &locsyms,
- rel - 1, ibfd))
+ retval = get_tls_type (&toc_tls, &locsyms,
+ rel - 1, ibfd);
+ if (retval == 0)
goto err_free_rel;
if (toc_tls != NULL)
- expecting_tls_get_addr = *toc_tls != 0;
+ expecting_tls_get_addr = retval > 1;
}
if (expecting_tls_get_addr)
case R_PPC64_DTPMOD64:
expecting_tls_get_addr = 0;
- if ((*tls_type & TLS_LD) == 0)
+ if (rel + 1 < relend
+ && (rel[1].r_info
+ == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
+ && rel[1].r_offset == rel->r_offset + 8)
{
- if ((h == NULL
- || ((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) != 0
- && ((h->elf_link_hash_flags
- & ELF_LINK_FORCED_LOCAL) != 0
- || !info->shared
- || info->symbolic)))
- && ok_tprel)
+ if (ok_tprel)
/* GD -> LE */
- tls_set = TLS_EXPLICIT;
+ tls_set = TLS_EXPLICIT | TLS_GD;
else
/* GD -> IE */
- tls_set = TLS_EXPLICIT | TLS_TPREL;
- tls_clear = TLS_GD_LD;
+ tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
+ tls_clear = TLS_GD;
}
else
{
- if (ok_tprel)
- /* LD -> LE */
- tls_set = TLS_EXPLICIT;
- else
- /* LD -> IE */
- tls_set = TLS_EXPLICIT | TLS_TPREL;
- tls_clear = TLS_GD_LD;
+ if (!is_local)
+ continue;
+
+ /* LD -> LE */
+ tls_set = TLS_EXPLICIT;
+ tls_clear = TLS_LD;
}
break;
if (ent->got.refcount > 0)
ent->got.refcount -= 1;
}
- else
- ent->tls_type = tls_set;
}
else if (h != NULL)
{
/* If we got rid of a DTPMOD/DTPREL reloc
pair then we'll lose one or two dyn
relocs. */
- if (tls_clear == TLS_GD_LD
- && rel + 1 < relend
- && (rel[1].r_info
- == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
- && rel[1].r_offset == rel->r_offset + 8)
- p->count -= 1;
- if (tls_set == TLS_EXPLICIT)
+ if (tls_set == (TLS_EXPLICIT | TLS_GD))
p->count -= 1;
+ p->count -= 1;
if (p->count == 0)
*pp = p->next;
break;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
}
+ eh = (struct ppc_link_hash_entry *) h;
+ /* Run through the TLS GD got entries first if we're changing them
+ to TPREL. */
+ if ((eh->tls_type & TLS_TPRELGD) != 0)
+ for (gent = h->got.glist; gent != NULL; gent = gent->next)
+ if (gent->got.refcount > 0
+ && (gent->tls_type & TLS_GD) != 0)
+ {
+ /* This was a GD entry that has been converted to TPREL. If
+ there happens to be a TPREL entry we can use that one. */
+ struct got_entry *ent;
+ for (ent = h->got.glist; ent != NULL; ent = ent->next)
+ if (ent->got.refcount > 0
+ && (ent->tls_type & TLS_TPREL) != 0
+ && ent->addend == gent->addend)
+ {
+ gent->got.refcount = 0;
+ break;
+ }
+
+ /* If not, then we'll be using our own TPREL entry. */
+ if (gent->got.refcount != 0)
+ gent->tls_type = TLS_TLS | TLS_TPREL;
+ }
+
for (gent = h->got.glist; gent != NULL; gent = gent->next)
if (gent->got.refcount > 0)
{
+ bfd_boolean dyn;
+
/* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
+ Undefined weak syms won't yet be marked as dynamic,
+ nor will all TLS symbols. */
if (h->dynindx == -1
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
{
}
if ((gent->tls_type & TLS_LD) != 0)
- gent->got.offset = htab->tlsld_got.offset;
- else
{
- bfd_boolean dyn;
-
- s = htab->sgot;
- gent->got.offset = s->_raw_size;
- s->_raw_size += (gent->tls_type & TLS_GD_LD) != 0 ? 16 : 8;
- dyn = htab->elf.dynamic_sections_created;
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
- htab->srelgot->_raw_size
- += ((gent->tls_type & TLS_GD_LD) != 0
- ? 2 * sizeof (Elf64_External_Rela)
- : sizeof (Elf64_External_Rela));
+ gent->got.offset = htab->tlsld_got.offset;
+ continue;
}
+
+ s = htab->sgot;
+ gent->got.offset = s->_raw_size;
+ s->_raw_size += (gent->tls_type & eh->tls_type & TLS_GD) ? 16 : 8;
+ dyn = htab->elf.dynamic_sections_created;
+ if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
+ htab->srelgot->_raw_size
+ += (gent->tls_type & eh->tls_type & TLS_GD
+ ? 2 * sizeof (Elf64_External_Rela)
+ : sizeof (Elf64_External_Rela));
}
else
gent->got.offset = (bfd_vma) -1;
- eh = (struct ppc_link_hash_entry *) h;
if (eh->dyn_relocs == NULL)
return TRUE;
{
struct got_entry **lgot_ents;
struct got_entry **end_lgot_ents;
+ char *lgot_types;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
asection *srel;
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
locsymcount = symtab_hdr->sh_info;
end_lgot_ents = lgot_ents + locsymcount;
+ lgot_types = (char *) end_lgot_ents;
s = htab->sgot;
srel = htab->srelgot;
- for (; lgot_ents < end_lgot_ents; ++lgot_ents)
+ for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_types)
{
struct got_entry *ent;
for (ent = *lgot_ents; ent != NULL; ent = ent->next)
if (ent->got.refcount > 0)
{
- if ((ent->tls_type & TLS_LD) != 0)
+ if ((ent->tls_type & *lgot_types & TLS_LD) != 0)
{
if (htab->tlsld_got.offset == (bfd_vma) -1)
{
else
{
ent->got.offset = s->_raw_size;
- if ((ent->tls_type & TLS_GD_LD) != 0)
+ if ((ent->tls_type & *lgot_types & TLS_GD) != 0)
{
s->_raw_size += 16;
if (info->shared)
if (!get_tls_type (&tls_type, &local_syms,
irela - 1, input_bfd))
goto error_ret_free_internal;
- if (tls_type != NULL
- && (*tls_type & (TLS_TLS | TLS_GD_LD)) == TLS_TLS)
+ if (*tls_type != 0)
continue;
}
Elf_Internal_Rela *relend;
Elf_Internal_Rela outrel;
bfd_byte *loc;
- unsigned int tls_get_addr_type;
struct got_entry **local_got_ents;
bfd_vma TOCstart;
bfd_boolean ret = TRUE;
sym_hashes = elf_sym_hashes (input_bfd);
is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
- tls_get_addr_type = 0;
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
struct elf_link_hash_entry *fdh;
const char *sym_name;
unsigned long r_symndx;
- char tls_type;
+ char tls_mask, tls_gd, tls_type;
bfd_vma relocation;
bfd_boolean unresolved_reloc;
bfd_boolean warned;
}
}
- /* TLS optimizations. */
- tls_type = 0;
+ /* TLS optimizations. Replace instruction sequences and relocs
+ based on information we collected in tls_optimize. We edit
+ RELOCS so that --emit-relocs will output something sensible
+ for the final instruction stream. */
+ tls_mask = 0;
+ tls_gd = 0;
if (IS_TLS_RELOC (r_type))
{
if (h != NULL)
- tls_type = ((struct ppc_link_hash_entry *) h)->tls_type;
+ tls_mask = ((struct ppc_link_hash_entry *) h)->tls_type;
else if (local_got_ents != NULL)
{
char *lgot_types;
lgot_types = (char *) (local_got_ents + symtab_hdr->sh_info);
- tls_type = lgot_types[r_symndx];
+ tls_mask = lgot_types[r_symndx];
}
}
switch (r_type)
{
default:
- tls_get_addr_type = 0;
break;
case R_PPC64_TOC16:
case R_PPC64_TOC16_LO:
case R_PPC64_TOC16_DS:
case R_PPC64_TOC16_LO_DS:
- tls_get_addr_type = 0;
{
/* Check for toc tls entries. */
char *toc_tls;
+ int retval;
- if (!get_tls_type (&toc_tls, &local_syms, rel, input_bfd))
+ retval = get_tls_type (&toc_tls, &local_syms, rel, input_bfd);
+ if (retval == 0)
return FALSE;
if (toc_tls)
{
- tls_type = *toc_tls;
+ tls_mask = *toc_tls;
if (r_type == R_PPC64_TOC16_DS
|| r_type == R_PPC64_TOC16_LO_DS)
goto toctprel;
else
- tls_get_addr_type = tls_type;
+ {
+ /* If we found a GD reloc pair, then we might be
+ doing a GD->IE transition. */
+ if (retval == 2)
+ {
+ tls_gd = TLS_TPRELGD;
+ if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
+ goto tls_get_addr_check;
+ }
+ else if (retval == 3)
+ {
+ if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
+ goto tls_get_addr_check;
+ }
+ }
}
}
break;
case R_PPC64_GOT_TPREL16_DS:
case R_PPC64_GOT_TPREL16_LO_DS:
- tls_get_addr_type = 0;
toctprel:
- if (tls_type != 0
- && (tls_type & TLS_TPREL) == 0)
+ if (tls_mask != 0
+ && (tls_mask & TLS_TPREL) == 0)
{
bfd_vma insn;
insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
break;
case R_PPC64_TLS:
- tls_get_addr_type = 0;
- if (tls_type == 0)
+ if (tls_mask == 0)
{
/* Check for toc tls entries. */
char *toc_tls;
return FALSE;
if (toc_tls)
- tls_type = *toc_tls;
+ tls_mask = *toc_tls;
}
- if (tls_type != 0
- && (tls_type & TLS_TPREL) == 0)
+ if (tls_mask != 0
+ && (tls_mask & TLS_TPREL) == 0)
{
bfd_vma insn, rtra;
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
}
break;
- case R_PPC64_GOT_TLSGD16:
- case R_PPC64_GOT_TLSGD16_LO:
case R_PPC64_GOT_TLSGD16_HI:
case R_PPC64_GOT_TLSGD16_HA:
- case R_PPC64_GOT_TLSLD16:
- case R_PPC64_GOT_TLSLD16_LO:
+ tls_gd = TLS_TPRELGD;
+ if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
+ goto tls_gdld_hi;
+ break;
+
case R_PPC64_GOT_TLSLD16_HI:
case R_PPC64_GOT_TLSLD16_HA:
- tls_get_addr_type = 0;
- if (tls_type != 0 && (tls_type & TLS_GD_LD) == 0)
+ if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
{
- if (r_type == R_PPC64_GOT_TLSGD16_HI
- || r_type == R_PPC64_GOT_TLSGD16_HA
- || r_type == R_PPC64_GOT_TLSLD16_HI
- || r_type == R_PPC64_GOT_TLSLD16_HA)
+ tls_gdld_hi:
+ if ((tls_mask & tls_gd) != 0)
+ r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
+ + R_PPC64_GOT_TPREL16_DS);
+ else
{
- if ((tls_type & TLS_LD) != 0)
- {
- bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
- r_type = R_PPC64_NONE;
- rel->r_offset -= 2;
- }
- else
- r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
- + R_PPC64_GOT_TPREL16_DS);
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- break;
+ bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
+ rel->r_offset -= 2;
+ r_type = R_PPC64_NONE;
}
-
- /* This reloc and its instruction will be replaced so there's
- not much point in doing anything more here. We know the
- next reloc will be a REL24 to __tls_get_addr, and will
- be handled below. */
- tls_get_addr_type = tls_type;
- continue;
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
}
break;
- case R_PPC64_REL14:
- case R_PPC64_REL14_BRTAKEN:
- case R_PPC64_REL14_BRNTAKEN:
- case R_PPC64_REL24:
- if (h != NULL
- && h == htab->tls_get_addr
- && tls_get_addr_type != 0
- && (tls_get_addr_type & TLS_GD_LD) == 0)
- {
- /* Replace the call. */
- bfd_vma insn1, insn2, insn3;
- bfd_vma offset = rel->r_offset;
+ case R_PPC64_GOT_TLSGD16:
+ case R_PPC64_GOT_TLSGD16_LO:
+ tls_gd = TLS_TPRELGD;
+ if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
+ goto tls_get_addr_check;
+ break;
- insn1 = bfd_get_32 (output_bfd, contents + rel[-1].r_offset - 2);
- insn3 = bfd_get_32 (output_bfd, contents + offset + 4);
- if (tls_get_addr_type & TLS_TPREL)
- {
- /* IE */
- insn1 &= (1 << 26) - (1 << 2);
- insn1 |= 58 << 26; /* ld */
- insn2 = 0x7c636a14; /* add 3,3,13 */
- /* Fix the relocs for --emit-relocs. */
- r_type = ELF64_R_TYPE (rel[-1].r_info);
- if (tls_get_addr_type & TLS_EXPLICIT)
- r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
- else
- r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
- + R_PPC64_GOT_TPREL16_DS);
- rel[-1].r_info
- = ELF64_R_INFO (ELF64_R_SYM (rel[-1].r_info), r_type);
- rel->r_info = 0;
- }
- else
+ case R_PPC64_GOT_TLSLD16:
+ case R_PPC64_GOT_TLSLD16_LO:
+ if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
+ {
+ tls_get_addr_check:
+ if (rel + 1 < relend)
{
- /* LE */
- insn1 = 0x3c6d0000; /* addis 3,13,0 */
- insn2 = 0x38630000; /* addi 3,3,0 */
- if (tls_get_addr_type & TLS_LD)
+ enum elf_ppc64_reloc_type r_type2;
+ unsigned long r_symndx2;
+ struct elf_link_hash_entry *h2;
+ bfd_vma insn1, insn2, insn3;
+ bfd_vma offset;
+
+ /* The next instruction should be a call to
+ __tls_get_addr. Peek at the reloc to be sure. */
+ r_type2
+ = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel[1].r_info);
+ r_symndx2 = ELF64_R_SYM (rel[1].r_info);
+ if (r_symndx2 < symtab_hdr->sh_info
+ || (r_type2 != R_PPC64_REL14
+ && r_type2 != R_PPC64_REL14_BRTAKEN
+ && r_type2 != R_PPC64_REL14_BRNTAKEN
+ && r_type2 != R_PPC64_REL24))
+ break;
+
+ h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
+ while (h2->root.type == bfd_link_hash_indirect
+ || h2->root.type == bfd_link_hash_warning)
+ h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
+ if (h2 == NULL || h2 != htab->tls_get_addr)
+ break;
+
+ /* OK, it checks out. Replace the call. */
+ offset = rel[1].r_offset;
+ insn1 = bfd_get_32 (output_bfd,
+ contents + rel->r_offset - 2);
+ insn3 = bfd_get_32 (output_bfd,
+ contents + offset + 4);
+ if ((tls_mask & tls_gd) != 0)
{
- r_symndx = 0;
- rel[-1].r_addend = htab->tls_sec->vma + DTP_OFFSET;
- rel->r_addend = htab->tls_sec->vma + DTP_OFFSET;
+ /* IE */
+ insn1 &= (1 << 26) - (1 << 2);
+ insn1 |= 58 << 26; /* ld */
+ insn2 = 0x7c636a14; /* add 3,3,13 */
+ rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
+ if ((tls_mask & TLS_EXPLICIT) == 0)
+ r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
+ + R_PPC64_GOT_TPREL16_DS);
+ else
+ r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
}
else
- r_symndx = ELF64_R_SYM (rel[-1].r_info);
- rel[-1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_TPREL16_HA);
- rel->r_info = ELF64_R_INFO (r_symndx, R_PPC64_TPREL16_LO);
- rel->r_offset += 2;
- }
- if (insn3 == NOP
- || insn3 == CROR_151515 || insn3 == CROR_313131)
- {
- insn3 = insn2;
- insn2 = NOP;
- rel->r_offset += 4;
+ {
+ /* LE */
+ insn1 = 0x3c6d0000; /* addis 3,13,0 */
+ insn2 = 0x38630000; /* addi 3,3,0 */
+ if (tls_gd == 0)
+ {
+ /* Was an LD reloc. */
+ r_symndx = 0;
+ rel->r_addend = htab->tls_sec->vma + DTP_OFFSET;
+ rel[1].r_addend = htab->tls_sec->vma + DTP_OFFSET;
+ }
+ r_type = R_PPC64_TPREL16_HA;
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ rel[1].r_info = ELF64_R_INFO (r_symndx,
+ R_PPC64_TPREL16_LO);
+ rel[1].r_offset += 2;
+ }
+ if (insn3 == NOP
+ || insn3 == CROR_151515 || insn3 == CROR_313131)
+ {
+ insn3 = insn2;
+ insn2 = NOP;
+ rel[1].r_offset += 4;
+ }
+ bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
+ bfd_put_32 (output_bfd, insn2, contents + offset);
+ bfd_put_32 (output_bfd, insn3, contents + offset + 4);
+ if (tls_gd == 0)
+ {
+ /* We changed the symbol on an LD reloc. Start over
+ in order to get h, sym, sec etc. right. */
+ rel--;
+ continue;
+ }
}
- bfd_put_32 (output_bfd, insn1, contents + rel[-1].r_offset - 2);
- bfd_put_32 (output_bfd, insn2, contents + offset);
- bfd_put_32 (output_bfd, insn3, contents + offset + 4);
- /* Do the relocs again. */
- rel -= 2;
- tls_get_addr_type = 0;
- continue;
}
- tls_get_addr_type = 0;
break;
case R_PPC64_DTPMOD64:
- if ((tls_type & TLS_GD_LD) == 0)
+ if (rel + 1 < relend
+ && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
+ && rel[1].r_offset == rel->r_offset + 8)
{
- if ((tls_type & TLS_TPREL) != 0)
- r_type = R_PPC64_TPREL64;
- else
+ if ((tls_mask & TLS_GD) == 0)
+ {
+ rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
+ if ((tls_mask & TLS_TPRELGD) != 0)
+ r_type = R_PPC64_TPREL64;
+ else
+ {
+ bfd_put_64 (output_bfd, (bfd_vma) 1,
+ contents + rel->r_offset);
+ r_type = R_PPC64_NONE;
+ }
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
+ }
+ }
+ else
+ {
+ if ((tls_mask & TLS_LD) == 0)
{
bfd_put_64 (output_bfd, (bfd_vma) 1,
contents + rel->r_offset);
r_type = R_PPC64_NONE;
+ rel->r_info = ELF64_R_INFO (r_symndx, r_type);
}
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- if ((tls_type & TLS_LD) == 0)
- rel[1].r_info = 0;
}
break;
case R_PPC64_TPREL64:
- if ((tls_type & TLS_TPREL) == 0)
+ if ((tls_mask & TLS_TPREL) == 0)
{
r_type = R_PPC64_NONE;
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
case R_PPC64_GOT_TLSGD16_LO:
case R_PPC64_GOT_TLSGD16_HI:
case R_PPC64_GOT_TLSGD16_HA:
- tls_type = TLS_TLS | TLS_GD_LD;
+ tls_type = TLS_TLS | TLS_GD;
goto dogot;
case R_PPC64_GOT_TLSLD16:
case R_PPC64_GOT_TLSLD16_LO:
case R_PPC64_GOT_TLSLD16_HI:
case R_PPC64_GOT_TLSLD16_HA:
- tls_type = TLS_TLS | TLS_GD_LD | TLS_LD;
+ tls_type = TLS_TLS | TLS_LD;
goto dogot;
case R_PPC64_GOT_TPREL16_DS:
the case of TLSLD where we'll use one entry per
module. */
if ((info->shared || indx != 0)
- && ent->tls_type != (TLS_TLS | TLS_GD_LD | TLS_LD))
+ && tls_type != (TLS_TLS | TLS_LD))
{
outrel.r_offset = (htab->sgot->output_section->vma
+ htab->sgot->output_offset
+ off);
- if (ent->tls_type == (TLS_TLS | TLS_GD_LD))
+ if (tls_type == (TLS_TLS | TLS_GD))
{
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
outrel.r_addend = 0;
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
outrel.r_offset += 8;
}
- else if (ent->tls_type == (TLS_TLS | TLS_DTPREL))
+ else if (tls_type == (TLS_TLS | TLS_DTPREL))
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
- else if (ent->tls_type == (TLS_TLS | TLS_TPREL))
+ else if (tls_type == (TLS_TLS | TLS_TPREL))
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
else if (indx == 0)
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
else
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
- outrel.r_addend = ent->addend;
+ outrel.r_addend = rel->r_addend;
if (indx == 0)
outrel.r_addend += relocation;
loc = htab->srelgot->contents;
relocation += DTP_OFFSET - TP_OFFSET;
}
- if ((tls_type & TLS_GD_LD) != 0)
+ if ((tls_type & (TLS_GD | TLS_LD)) != 0)
{
if ((tls_type & TLS_LD) != 0)
relocation = - DTP_OFFSET;
OSDN Git Service
