uint64_t
do_dynsym_value(const Symbol*) const;
+ // Return the PLT address to use for a local symbol.
+ uint64_t
+ do_plt_address_for_local(const Relobj*, unsigned int) const;
+
+ // Return the PLT address to use for a global symbol.
+ uint64_t
+ do_plt_address_for_global(const Symbol*) const;
+
// Return the offset to use for the GOT_INDX'th got entry which is
// for a local tls symbol specified by OBJECT, SYMNDX.
int64_t
make_plt_section(Layout*);
void
- make_iplt_section(Layout*, Symbol_table*);
+ make_iplt_section(Layout*);
// Create a PLT entry for a global symbol.
void
- make_plt_entry(Layout*, Symbol_table*, Symbol*,
+ make_plt_entry(Layout*, Symbol*,
const elfcpp::Rela<size, big_endian>&,
const Sized_relobj_file<size, big_endian>* object);
// Create a PLT entry for a local IFUNC symbol.
void
- make_local_ifunc_plt_entry(Layout*, Symbol_table*,
+ make_local_ifunc_plt_entry(Layout*,
const elfcpp::Rela<size, big_endian>&,
Sized_relobj_file<size, big_endian>*);
void
do_write(Output_file* of)
{
- this->replace_constant(this->header_index_,
- (size == 32
- ? this->layout_->dynamic_section()->address()
- : this->output_section()->address() + 0x8000));
-
+ Valtype val = 0;
+ if (size == 32 && this->layout_->dynamic_data() != NULL)
+ val = this->layout_->dynamic_section()->address();
+ if (size == 64)
+ val = this->output_section()->address() + 0x8000;
+ this->replace_constant(this->header_index_, val);
Output_data_got<size, big_endian>::do_write(of);
}
{ }
// Add an entry to the PLT.
- void
+ bool
add_entry(Symbol*);
- void
+ bool
add_ifunc_entry(Symbol*);
- void
+ bool
add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int);
// Return the .rela.plt section data.
// Add an entry to the PLT.
template<int size, bool big_endian>
-void
+bool
Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym)
{
if (!gsym->has_plt_offset())
this->rel_->add_global(gsym, dynrel, this, off, 0);
off += plt_entry_size;
this->set_current_data_size(off);
+ return true;
}
+ return false;
}
// Add an entry for a global ifunc symbol that resolves locally, to the IPLT.
template<int size, bool big_endian>
-void
+bool
Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym)
{
if (!gsym->has_plt_offset())
this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0);
off += plt_entry_size;
this->set_current_data_size(off);
+ return true;
}
+ return false;
}
// Add an entry for a local ifunc symbol to the IPLT.
template<int size, bool big_endian>
-void
+bool
Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry(
Sized_relobj_file<size, big_endian>* relobj,
unsigned int local_sym_index)
this, off, 0);
off += plt_entry_size;
this->set_current_data_size(off);
+ return true;
}
+ return false;
}
static const uint32_t add_0_11_11 = 0x7c0b5a14;
template<int size, bool big_endian>
void
-Target_powerpc<size, big_endian>::make_iplt_section(Layout* layout,
- Symbol_table* symtab)
+Target_powerpc<size, big_endian>::make_iplt_section(Layout* layout)
{
if (this->iplt_ == NULL)
{
= new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel,
0, "** IPLT");
this->plt_->output_section()->add_output_section_data(this->iplt_);
- if (parameters->doing_static_link())
- {
- symtab->define_in_output_data("__rela_iplt_start", NULL,
- Symbol_table::PREDEFINED,
- iplt_rel, 0, 0,
- elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
- elfcpp::STV_HIDDEN, 0, false, true);
- symtab->define_in_output_data("__rela_iplt_end", NULL,
- Symbol_table::PREDEFINED,
- iplt_rel, 0, 0,
- elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
- elfcpp::STV_HIDDEN, 0, true, true);
- }
}
}
// Add an entry
void
- add_entry(const Symbol*, const elfcpp::Rela<size, big_endian>&,
- const Sized_relobj_file<size, big_endian>*);
+ add_entry(const Sized_relobj_file<size, big_endian>*,
+ const Symbol*,
+ const elfcpp::Rela<size, big_endian>&);
void
- add_entry(unsigned int, const elfcpp::Rela<size, big_endian>&,
- const Sized_relobj_file<size, big_endian>*);
+ add_entry(const Sized_relobj_file<size, big_endian>*,
+ unsigned int,
+ const elfcpp::Rela<size, big_endian>&);
unsigned int
- find_entry(const Symbol*, const elfcpp::Rela<size, big_endian>&,
- const Sized_relobj_file<size, big_endian>*) const;
+ find_entry(const Symbol*) const;
unsigned int
- find_entry(unsigned int, const elfcpp::Rela<size, big_endian>&,
- const Sized_relobj_file<size, big_endian>*) const;
+ find_entry(const Sized_relobj_file<size, big_endian>*, unsigned int) const;
+
+ unsigned int
+ find_entry(const Sized_relobj_file<size, big_endian>*,
+ const Symbol*,
+ const elfcpp::Rela<size, big_endian>&) const;
+
+ unsigned int
+ find_entry(const Sized_relobj_file<size, big_endian>*,
+ unsigned int,
+ const elfcpp::Rela<size, big_endian>&) const;
unsigned int
glink_entry_size() const
class Glink_sym_ent
{
public:
- Glink_sym_ent(const Symbol* sym,
- const elfcpp::Rela<size, big_endian>& reloc,
- const Sized_relobj_file<size, big_endian>* object)
+ Glink_sym_ent(const Symbol* sym)
+ : sym_(sym), object_(0), addend_(0), locsym_(0)
+ { }
+
+ Glink_sym_ent(const Sized_relobj_file<size, big_endian>* object,
+ unsigned int locsym_index)
+ : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index)
+ { }
+
+ Glink_sym_ent(const Sized_relobj_file<size, big_endian>* object,
+ const Symbol* sym,
+ const elfcpp::Rela<size, big_endian>& reloc)
: sym_(sym), object_(0), addend_(0), locsym_(0)
{
if (size != 32)
}
}
- Glink_sym_ent(unsigned int locsym_index,
- const elfcpp::Rela<size, big_endian>& reloc,
- const Sized_relobj_file<size, big_endian>* object)
+ Glink_sym_ent(const Sized_relobj_file<size, big_endian>* object,
+ unsigned int locsym_index,
+ const elfcpp::Rela<size, big_endian>& reloc)
: sym_(NULL), object_(object), addend_(0), locsym_(locsym_index)
{
if (size != 32)
template<int size, bool big_endian>
void
Output_data_glink<size, big_endian>::add_entry(
+ const Sized_relobj_file<size, big_endian>* object,
const Symbol* gsym,
- const elfcpp::Rela<size, big_endian>& reloc,
- const Sized_relobj_file<size, big_endian>* object)
+ const elfcpp::Rela<size, big_endian>& reloc)
{
- Glink_sym_ent ent(gsym, reloc, object);
+ Glink_sym_ent ent(object, gsym, reloc);
unsigned int indx = this->glink_entries_.size();
this->glink_entries_.insert(std::make_pair(ent, indx));
}
template<int size, bool big_endian>
void
Output_data_glink<size, big_endian>::add_entry(
+ const Sized_relobj_file<size, big_endian>* object,
unsigned int locsym_index,
- const elfcpp::Rela<size, big_endian>& reloc,
- const Sized_relobj_file<size, big_endian>* object)
+ const elfcpp::Rela<size, big_endian>& reloc)
{
- Glink_sym_ent ent(locsym_index, reloc, object);
+ Glink_sym_ent ent(object, locsym_index, reloc);
unsigned int indx = this->glink_entries_.size();
this->glink_entries_.insert(std::make_pair(ent, indx));
}
template<int size, bool big_endian>
unsigned int
Output_data_glink<size, big_endian>::find_entry(
+ const Sized_relobj_file<size, big_endian>* object,
const Symbol* gsym,
- const elfcpp::Rela<size, big_endian>& reloc,
- const Sized_relobj_file<size, big_endian>* object) const
+ const elfcpp::Rela<size, big_endian>& reloc) const
+{
+ Glink_sym_ent ent(object, gsym, reloc);
+ typename Glink_entries::const_iterator p = this->glink_entries_.find(ent);
+ gold_assert(p != this->glink_entries_.end());
+ return p->second;
+}
+
+template<int size, bool big_endian>
+unsigned int
+Output_data_glink<size, big_endian>::find_entry(const Symbol* gsym) const
{
- Glink_sym_ent ent(gsym, reloc, object);
+ Glink_sym_ent ent(gsym);
typename Glink_entries::const_iterator p = this->glink_entries_.find(ent);
gold_assert(p != this->glink_entries_.end());
return p->second;
template<int size, bool big_endian>
unsigned int
Output_data_glink<size, big_endian>::find_entry(
+ const Sized_relobj_file<size, big_endian>* object,
unsigned int locsym_index,
- const elfcpp::Rela<size, big_endian>& reloc,
- const Sized_relobj_file<size, big_endian>* object) const
+ const elfcpp::Rela<size, big_endian>& reloc) const
{
- Glink_sym_ent ent(locsym_index, reloc, object);
+ Glink_sym_ent ent(object, locsym_index, reloc);
+ typename Glink_entries::const_iterator p = this->glink_entries_.find(ent);
+ gold_assert(p != this->glink_entries_.end());
+ return p->second;
+}
+
+template<int size, bool big_endian>
+unsigned int
+Output_data_glink<size, big_endian>::find_entry(
+ const Sized_relobj_file<size, big_endian>* object,
+ unsigned int locsym_index) const
+{
+ Glink_sym_ent ent(object, locsym_index);
typename Glink_entries::const_iterator p = this->glink_entries_.find(ent);
gold_assert(p != this->glink_entries_.end());
return p->second;
void
Target_powerpc<size, big_endian>::make_plt_entry(
Layout* layout,
- Symbol_table* symtab,
Symbol* gsym,
const elfcpp::Rela<size, big_endian>& reloc,
const Sized_relobj_file<size, big_endian>* object)
&& gsym->can_use_relative_reloc(false))
{
if (this->iplt_ == NULL)
- this->make_iplt_section(layout, symtab);
- this->iplt_->add_ifunc_entry(gsym);
+ this->make_iplt_section(layout);
+ if (this->iplt_->add_ifunc_entry(gsym))
+ this->glink_->add_entry(object, gsym, reloc);
}
else
{
if (this->plt_ == NULL)
this->make_plt_section(layout);
- this->plt_->add_entry(gsym);
+ if (this->plt_->add_entry(gsym))
+ this->glink_->add_entry(object, gsym, reloc);
}
- this->glink_->add_entry(gsym, reloc, object);
}
// Make a PLT entry for a local STT_GNU_IFUNC symbol.
void
Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry(
Layout* layout,
- Symbol_table* symtab,
const elfcpp::Rela<size, big_endian>& reloc,
Sized_relobj_file<size, big_endian>* relobj)
{
if (this->iplt_ == NULL)
- this->make_iplt_section(layout, symtab);
+ this->make_iplt_section(layout);
unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
- this->iplt_->add_local_ifunc_entry(relobj, r_sym);
- this->glink_->add_entry(r_sym, reloc, relobj);
+ if (this->iplt_->add_local_ifunc_entry(relobj, r_sym))
+ this->glink_->add_entry(relobj, r_sym, reloc);
}
// Return the number of entries in the PLT.
Sized_relobj_file<size, big_endian>* object,
unsigned int r_type)
{
+ // In non-pic code any reference will resolve to the plt call stub
+ // for the ifunc symbol.
+ if (size == 32 && !parameters->options().output_is_position_independent())
+ return true;
+
switch (r_type)
{
// Word size refs from data sections are OK.
// A local STT_GNU_IFUNC symbol may require a PLT entry.
bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC;
if (is_ifunc && this->reloc_needs_plt_for_ifunc(object, r_type))
- target->make_local_ifunc_plt_entry(layout, symtab, reloc, object);
+ target->make_local_ifunc_plt_entry(layout, reloc, object);
switch (r_type)
{
// If building a shared library (or a position-independent
// executable), we need to create a dynamic relocation for
// this location.
- if (parameters->options().output_is_position_independent())
+ if (parameters->options().output_is_position_independent()
+ || (size == 64 && is_ifunc))
{
Reloc_section* rela_dyn = target->rela_dyn_section(layout);
rela_dyn->add_local_relative(object, r_sym, dynrel,
output_section, data_shndx,
reloc.get_r_offset(),
- reloc.get_r_addend(), is_ifunc);
+ reloc.get_r_addend(), false);
}
else
{
case elfcpp::R_PPC64_REL64:
case elfcpp::R_POWERPC_REL32:
case elfcpp::R_POWERPC_REL24:
+ case elfcpp::R_PPC_PLTREL24:
case elfcpp::R_PPC_LOCAL24PC:
case elfcpp::R_POWERPC_REL16:
case elfcpp::R_POWERPC_REL16_LO:
dynrel = elfcpp::R_POWERPC_IRELATIVE;
}
rela_dyn->add_local_relative(object, r_sym, dynrel,
- got, off, 0, is_ifunc);
+ got, off, 0, false);
}
}
break;
// A STT_GNU_IFUNC symbol may require a PLT entry.
if (gsym->type() == elfcpp::STT_GNU_IFUNC
&& this->reloc_needs_plt_for_ifunc(object, r_type))
- target->make_plt_entry(layout, symtab, gsym, reloc, object);
+ target->make_plt_entry(layout, gsym, reloc, object);
switch (r_type)
{
// Make a PLT entry if necessary.
if (gsym->needs_plt_entry())
{
- target->make_plt_entry(layout, symtab, gsym, reloc, 0);
+ target->make_plt_entry(layout, gsym, reloc, 0);
// Since this is not a PC-relative relocation, we may be
// taking the address of a function. In that case we need to
// set the entry in the dynamic symbol table to the address of
gsym->set_needs_dynsym_value();
}
// Make a dynamic relocation if necessary.
- if (needs_dynamic_reloc<size>(gsym, Scan::get_reference_flags(r_type)))
+ if (needs_dynamic_reloc<size>(gsym, Scan::get_reference_flags(r_type))
+ || (size == 64 && gsym->type() == elfcpp::STT_GNU_IFUNC))
{
if (gsym->may_need_copy_reloc())
{
&& (gsym->is_undefined()
|| gsym->is_from_dynobj()
|| gsym->is_preemptible())))
- target->make_plt_entry(layout, symtab, gsym, reloc, object);
+ target->make_plt_entry(layout, gsym, reloc, object);
// Fall thru
case elfcpp::R_PPC64_REL64:
const Input_objects*,
Symbol_table* symtab)
{
+ if (parameters->doing_static_link())
+ {
+ // At least some versions of glibc elf-init.o have a strong
+ // reference to __rela_iplt marker syms. A weak ref would be
+ // better..
+ if (this->iplt_ != NULL)
+ {
+ Reloc_section* rel = this->iplt_->rel_plt();
+ symtab->define_in_output_data("__rela_iplt_start", NULL,
+ Symbol_table::PREDEFINED, rel, 0, 0,
+ elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
+ elfcpp::STV_HIDDEN, 0, false, true);
+ symtab->define_in_output_data("__rela_iplt_end", NULL,
+ Symbol_table::PREDEFINED, rel, 0, 0,
+ elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
+ elfcpp::STV_HIDDEN, 0, true, true);
+ }
+ else
+ {
+ symtab->define_as_constant("__rela_iplt_start", NULL,
+ Symbol_table::PREDEFINED, 0, 0,
+ elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
+ elfcpp::STV_HIDDEN, 0, true, false);
+ symtab->define_as_constant("__rela_iplt_end", NULL,
+ Symbol_table::PREDEFINED, 0, 0,
+ elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
+ elfcpp::STV_HIDDEN, 0, true, false);
+ }
+ }
+
if (size == 64)
{
typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor;
}
// Fill in some more dynamic tags.
- const Reloc_section* rel_plt = (this->plt_ == NULL
- ? NULL
- : this->plt_->rel_plt());
- layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
- this->rela_dyn_, true, size == 32);
-
Output_data_dynamic* odyn = layout->dynamic_data();
- if (size == 32)
+ if (odyn != NULL)
{
- if (this->got_ != NULL)
+ const Reloc_section* rel_plt = (this->plt_ == NULL
+ ? NULL
+ : this->plt_->rel_plt());
+ layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
+ this->rela_dyn_, true, size == 32);
+
+ if (size == 32)
{
- this->got_->finalize_data_size();
- odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT,
- this->got_, this->got_->g_o_t());
+ if (this->got_ != NULL)
+ {
+ this->got_->finalize_data_size();
+ odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT,
+ this->got_, this->got_->g_o_t());
+ }
}
- }
- else
- {
- if (this->glink_ != NULL)
+ else
{
- this->glink_->finalize_data_size();
- odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK,
- this->glink_,
- (this->glink_->pltresolve()
- + this->glink_->pltresolve_size - 32));
+ if (this->glink_ != NULL)
+ {
+ this->glink_->finalize_data_size();
+ odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK,
+ this->glink_,
+ (this->glink_->pltresolve()
+ + this->glink_->pltresolve_size
+ - 32));
+ }
}
}
{
const Output_data_glink<size, big_endian>* glink
= target->glink_section();
- unsigned int glink_index = glink->find_entry(gsym, rela, object);
+ unsigned int glink_index;
+ if (gsym != NULL)
+ glink_index = glink->find_entry(object, gsym, rela);
+ else
+ glink_index = glink->find_entry(object, r_sym, rela);
value = glink->address() + glink_index * glink->glink_entry_size();
has_plt_value = true;
}
// such a call so just check for a call to the same
// section.
bool ok = false;
+ Address code = value;
if (gsym->source() == Symbol::FROM_OBJECT
&& gsym->object() == object)
{
Address addend = rela.get_r_addend();
unsigned int dest_shndx;
- value = psymval->value(object, addend);
- value = target->symval_for_branch(value, gsym, object,
- &dest_shndx);
+ Address opdent = psymval->value(object, addend);
+ code = target->symval_for_branch(opdent, gsym, object,
+ &dest_shndx);
bool is_ordinary;
if (dest_shndx == 0)
dest_shndx = gsym->shndx(&is_ordinary);
ok = dest_shndx == relinfo->data_shndx;
}
if (!ok)
- gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
- _("call lacks nop, can't restore toc; "
- "recompile with -fPIC"));
+ {
+ gold_error_at_location(relinfo, relnum, rela.get_r_offset(),
+ _("call lacks nop, can't restore toc; "
+ "recompile with -fPIC"));
+ value = code;
+ }
}
}
}
value = psymval->value(object, rela.get_r_addend());
}
}
- else
+ else if (!has_plt_value)
{
Address addend = 0;
unsigned int dest_shndx;
if (r_type != elfcpp::R_PPC_PLTREL24)
addend = rela.get_r_addend();
- if (size == 64 || !has_plt_value)
- value = psymval->value(object, addend);
+ value = psymval->value(object, addend);
if (size == 64 && is_branch_reloc(r_type))
value = target->symval_for_branch(value, gsym, object, &dest_shndx);
}
{
gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
const Output_data_glink<size, big_endian>* glink = this->glink_section();
- static const unsigned char zeros[elfcpp::Elf_sizes<32>::rela_size] = {0};
- const elfcpp::Rela<size, big_endian> zero_reloc(zeros);
- unsigned int glink_index = glink->find_entry(gsym, zero_reloc, NULL);
+ unsigned int glink_index = glink->find_entry(gsym);
+ return glink->address() + glink_index * glink->glink_entry_size();
+ }
+ else
+ gold_unreachable();
+}
+
+// Return the PLT address to use for a local symbol.
+template<int size, bool big_endian>
+uint64_t
+Target_powerpc<size, big_endian>::do_plt_address_for_local(
+ const Relobj* object,
+ unsigned int symndx) const
+{
+ if (size == 32)
+ {
+ const Sized_relobj<size, big_endian>* relobj
+ = static_cast<const Sized_relobj<size, big_endian>*>(object);
+ const Output_data_glink<size, big_endian>* glink = this->glink_section();
+ unsigned int glink_index = glink->find_entry(relobj->sized_relobj(),
+ symndx);
+ return glink->address() + glink_index * glink->glink_entry_size();
+ }
+ else
+ gold_unreachable();
+}
+
+// Return the PLT address to use for a global symbol.
+template<int size, bool big_endian>
+uint64_t
+Target_powerpc<size, big_endian>::do_plt_address_for_global(
+ const Symbol* gsym) const
+{
+ if (size == 32)
+ {
+ const Output_data_glink<size, big_endian>* glink = this->glink_section();
+ unsigned int glink_index = glink->find_entry(gsym);
return glink->address() + glink_index * glink->glink_entry_size();
}
else
projects / thirdparty / binutils-gdb.git / commitdiff
