template<int size, bool big_endian>
class Output_data_plt_powerpc;
+template<int size, bool big_endian>
+class Output_data_got_powerpc;
+
+template<int size, bool big_endian>
+class Output_data_glink;
+
+template<int size, bool big_endian>
+class Powerpc_relobj : public Sized_relobj_file<size, big_endian>
+{
+public:
+ Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset,
+ const typename elfcpp::Ehdr<size, big_endian>& ehdr)
+ : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr),
+ got2_section_(0)
+ { }
+
+ ~Powerpc_relobj()
+ { }
+
+ unsigned int
+ got2_shndx() const
+ {
+ if (size == 32)
+ return this->got2_section_;
+ else
+ return 0;
+ }
+
+ void
+ set_got2_shndx(unsigned int shndx)
+ {
+ if (size == 32)
+ this->got2_section_ = shndx;
+ else
+ gold_unreachable();
+ }
+
+ bool
+ do_find_special_sections(Read_symbols_data* sd);
+
+private:
+ unsigned int got2_section_;
+};
+
template<int size, bool big_endian>
class Target_powerpc : public Sized_target<size, big_endian>
{
Target_powerpc()
: Sized_target<size, big_endian>(&powerpc_info),
- got_(NULL), got2_(NULL), toc_(NULL),
- plt_(NULL), rela_dyn_(NULL),
+ got_(NULL), plt_(NULL), glink_(NULL), rela_dyn_(NULL),
copy_relocs_(elfcpp::R_POWERPC_COPY),
dynbss_(NULL), got_mod_index_offset_(-1U)
{
Output_section* output_section,
off_t offset_in_output_section,
const Relocatable_relocs*,
- unsigned char* view,
- typename elfcpp::Elf_types<size>::Elf_Addr view_address,
- section_size_type view_size,
+ unsigned char*,
+ typename elfcpp::Elf_types<size>::Elf_Addr,
+ section_size_type,
unsigned char* reloc_view,
section_size_type reloc_view_size);
bool
do_is_defined_by_abi(const Symbol* sym) const
{
- return strcmp(sym->name(), "___tls_get_addr") == 0;
+ return strcmp(sym->name(), "__tls_get_addr") == 0;
}
// Return the size of the GOT section.
return this->got_->data_size();
}
+ // Get the PLT section.
+ const Output_data_plt_powerpc<size, big_endian>*
+ plt_section() const
+ {
+ gold_assert(this->plt_ != NULL);
+ return this->plt_;
+ }
+
+ // Get the .glink section.
+ const Output_data_glink<size, big_endian>*
+ glink_section() const
+ {
+ gold_assert(this->glink_ != NULL);
+ return this->glink_;
+ }
+
+ // Get the GOT section.
+ const Output_data_got_powerpc<size, big_endian>*
+ got_section() const
+ {
+ gold_assert(this->got_ != NULL);
+ return this->got_;
+ }
+
+ protected:
+ Object*
+ do_make_elf_object(const std::string&, Input_file*, off_t,
+ const elfcpp::Ehdr<size, big_endian>&);
+
// Return the number of entries in the GOT.
unsigned int
got_entry_count() const
{
public:
unsigned int
- get_size_for_reloc(unsigned int, Relobj*);
+ get_size_for_reloc(unsigned int, Relobj*)
+ {
+ gold_unreachable();
+ return 0;
+ }
};
+ // Adjust TLS relocation type based on the options and whether this
+ // is a local symbol.
+ static tls::Tls_optimization
+ optimize_tls_reloc(bool is_final, int r_type);
+
// Get the GOT section, creating it if necessary.
- Output_data_got<size, big_endian>*
+ Output_data_got_powerpc<size, big_endian>*
got_section(Symbol_table*, Layout*);
- Output_data_space*
- got2_section() const
- {
- gold_assert(this->got2_ != NULL);
- return this->got2_;
- }
+ // Create glink.
+ void
+ make_glink_section(Layout*);
- // Get the TOC section.
- Output_data_space*
- toc_section() const
- {
- gold_assert(this->toc_ != NULL);
- return this->toc_;
- }
+ // Create the PLT section.
+ void
+ make_plt_section(Layout*);
// Create a PLT entry for a global symbol.
void
- make_plt_entry(Symbol_table*, Layout*, Symbol*);
+ make_plt_entry(Layout*, Symbol*,
+ const elfcpp::Rela<size, big_endian>&,
+ const Sized_relobj<size, big_endian>* object);
// Create a GOT entry for the TLS module index.
unsigned int
got_mod_index_entry(Symbol_table* symtab, Layout* layout,
Sized_relobj_file<size, big_endian>* object);
- // Get the PLT section.
- const Output_data_plt_powerpc<size, big_endian>*
- plt_section() const
- {
- gold_assert(this->plt_ != NULL);
- return this->plt_;
- }
-
// Get the dynamic reloc section, creating it if necessary.
Reloc_section*
rela_dyn_section(Layout*);
GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair
};
- // The GOT section.
- Output_data_got<size, big_endian>* got_;
- // The GOT2 section.
- Output_data_space* got2_;
- // The TOC section.
- Output_data_space* toc_;
- // The PLT section.
+ // The GOT output section.
+ Output_data_got_powerpc<size, big_endian>* got_;
+ // The PLT output section.
Output_data_plt_powerpc<size, big_endian>* plt_;
- // The dynamic reloc section.
+ // The .glink output section.
+ Output_data_glink<size, big_endian>* glink_;
+ // The dynamic reloc output section.
Reloc_section* rela_dyn_;
// Relocs saved to avoid a COPY reloc.
Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_;
class Powerpc_relocate_functions
{
private:
- // Do a simple relocation with the addend in the relocation.
+ // Do a simple RELA relocation
template<int valsize>
static inline void
rela(unsigned char* view,
typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
Valtype* wv = reinterpret_cast<Valtype*>(view);
Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
- Valtype reloc = ((value + addend) >> right_shift);
-
- val &= ~dst_mask;
- reloc &= dst_mask;
-
- elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
- }
-
- // Do a simple relocation using a symbol value with the addend in
- // the relocation.
- template<int valsize>
- static inline void
- rela(unsigned char* view,
- unsigned int right_shift,
- elfcpp::Elf_Xword dst_mask,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
- typename elfcpp::Swap<valsize, big_endian>::Valtype addend)
- {
- typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
- Valtype* wv = reinterpret_cast<Valtype*>(view);
- Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
- Valtype reloc = (psymval->value(object, addend) >> right_shift);
+ Valtype reloc = (value + addend) >> right_shift;
val &= ~dst_mask;
reloc &= dst_mask;
elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
}
- // Do a simple relocation using a symbol value with the addend in
- // the relocation, unaligned.
+ // Do a simple RELA relocation, unaligned.
template<int valsize>
static inline void
- rela_ua(unsigned char* view, unsigned int right_shift,
+ rela_ua(unsigned char* view,
+ unsigned int right_shift,
elfcpp::Elf_Xword dst_mask,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
+ typename elfcpp::Swap<size, big_endian>::Valtype value,
typename elfcpp::Swap<size, big_endian>::Valtype addend)
{
typedef typename elfcpp::Swap_unaligned<valsize,
- big_endian>::Valtype Valtype;
- unsigned char* wv = view;
- Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv);
- Valtype reloc = (psymval->value(object, addend) >> right_shift);
-
- val &= ~dst_mask;
- reloc &= dst_mask;
-
- elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
- }
-
- // Do a simple PC relative relocation with a Symbol_value with the
- // addend in the relocation.
- template<int valsize>
- static inline void
- pcrela(unsigned char* view, unsigned int right_shift,
- elfcpp::Elf_Xword dst_mask,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
- typename elfcpp::Swap<size, big_endian>::Valtype addend,
- typename elfcpp::Elf_types<size>::Elf_Addr address)
- {
- typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
+ big_endian>::Valtype Valtype;
Valtype* wv = reinterpret_cast<Valtype*>(view);
Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv);
- Valtype reloc = ((psymval->value(object, addend) - address)
- >> right_shift);
+ Valtype reloc = (value + addend) >> right_shift;
val &= ~dst_mask;
reloc &= dst_mask;
- elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc);
- }
-
- template<int valsize>
- static inline void
- pcrela_unaligned(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
- typename elfcpp::Swap<size, big_endian>::Valtype addend,
- typename elfcpp::Elf_types<size>::Elf_Addr address)
- {
- typedef typename elfcpp::Swap_unaligned<valsize,
- big_endian>::Valtype Valtype;
- unsigned char* wv = view;
- Valtype reloc = (psymval->value(object, addend) - address);
-
- elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc);
+ elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc);
}
typedef Powerpc_relocate_functions<size, big_endian> This;
// R_POWERPC_REL32: (Symbol + Addend - Address)
static inline void
rel32(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr value,
typename elfcpp::Elf_types<size>::Elf_Addr addend,
typename elfcpp::Elf_types<size>::Elf_Addr address)
- { This_reloc::pcrela32(view, object, psymval, addend, address); }
+ { This_reloc::pcrela32(view, value, addend, address); }
// R_POWERPC_REL24: (Symbol + Addend - Address) & 0x3fffffc
static inline void
rel24(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr value,
typename elfcpp::Elf_types<size>::Elf_Addr addend,
typename elfcpp::Elf_types<size>::Elf_Addr address)
{
- This::template pcrela<32>(view, 0, 0x03fffffc, object,
- psymval, addend, address);
+ This::template rela<32>(view, 0, 0x03fffffc, value - address, addend);
}
// R_POWERPC_REL14: (Symbol + Addend - Address) & 0xfffc
static inline void
rel14(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr value,
typename elfcpp::Elf_types<size>::Elf_Addr addend,
typename elfcpp::Elf_types<size>::Elf_Addr address)
{
- This::template pcrela<32>(view, 0, 0x0000fffc, object,
- psymval, addend, address);
+ This::template rela<32>(view, 0, 0xfffc, value - address, addend);
}
// R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff
typename elfcpp::Elf_types<size>::Elf_Addr addend)
{ This_reloc::rela16(view, value, addend); }
- static inline void
- addr16(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
- typename elfcpp::Elf_types<size>::Elf_Addr addend)
- { This_reloc::rela16(view, object, psymval, addend); }
-
// R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc
static inline void
addr16_ds(unsigned char* view,
typename elfcpp::Elf_types<size>::Elf_Addr addend)
{ This_reloc::rela16(view, value, addend); }
- static inline void
- addr16_lo(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
- typename elfcpp::Elf_types<size>::Elf_Addr addend)
- { This_reloc::rela16(view, object, psymval, addend); }
-
// R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff
static inline void
addr16_hi(unsigned char* view,
This::template rela<16>(view, 16, 0xffff, value, addend);
}
- static inline void
- addr16_hi(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
- typename elfcpp::Elf_types<size>::Elf_Addr addend)
- {
- This::template rela<16>(view, 16, 0xffff, object, psymval, addend);
- }
-
// R_POWERPC_ADDR16_HA: Same as R_POWERPC_ADDR16_HI except that if the
// final value of the low 16 bits of the
// relocation is negative, add one.
typename elfcpp::Elf_types<size>::Elf_Addr value,
typename elfcpp::Elf_types<size>::Elf_Addr addend)
{
- typename elfcpp::Elf_types<size>::Elf_Addr reloc;
-
- reloc = value + addend;
-
- if (reloc & 0x8000)
- reloc += 0x10000;
- reloc >>= 16;
-
- elfcpp::Swap<16, big_endian>::writeval(view, reloc);
- }
-
- static inline void
- addr16_ha(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
- typename elfcpp::Elf_types<size>::Elf_Addr addend)
- {
- typename elfcpp::Elf_types<size>::Elf_Addr reloc;
-
- reloc = psymval->value(object, addend);
-
- if (reloc & 0x8000)
- reloc += 0x10000;
- reloc >>= 16;
-
- elfcpp::Swap<16, big_endian>::writeval(view, reloc);
+ This::addr16_hi(view, value + 0x8000, addend);
}
// R_PPC_REL16: (Symbol + Addend - Address) & 0xffff
static inline void
rel16(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr value,
typename elfcpp::Elf_types<size>::Elf_Addr addend,
typename elfcpp::Elf_types<size>::Elf_Addr address)
- { This_reloc::pcrela16(view, object, psymval, addend, address); }
+ { This_reloc::pcrela16(view, value, addend, address); }
// R_PPC_REL16_LO: (Symbol + Addend - Address) & 0xffff
static inline void
rel16_lo(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr value,
typename elfcpp::Elf_types<size>::Elf_Addr addend,
typename elfcpp::Elf_types<size>::Elf_Addr address)
- { This_reloc::pcrela16(view, object, psymval, addend, address); }
+ { This_reloc::pcrela16(view, value, addend, address); }
// R_PPC_REL16_HI: ((Symbol + Addend - Address) >> 16) & 0xffff
static inline void
rel16_hi(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr value,
typename elfcpp::Elf_types<size>::Elf_Addr addend,
typename elfcpp::Elf_types<size>::Elf_Addr address)
- {
- This::template pcrela<16>(view, 16, 0xffff, object,
- psymval, addend, address);
+ {
+ This::template rela<16>(view, 16, 0xffff, value - address, addend);
}
// R_PPC_REL16_HA: Same as R_PPC_REL16_HI except that if the
// relocation is negative, add one.
static inline void
rel16_ha(unsigned char* view,
- const Sized_relobj_file<size, big_endian>* object,
- const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr value,
typename elfcpp::Elf_types<size>::Elf_Addr addend,
typename elfcpp::Elf_types<size>::Elf_Addr address)
+ {
+ This::rel16_hi(view, value + 0x8000, addend, address);
+ }
+};
+
+// Stash away the index of .got2 in a relocatable object, if such
+// a section exists.
+
+template<int size, bool big_endian>
+bool
+Powerpc_relobj<size, big_endian>::do_find_special_sections(
+ Read_symbols_data* sd)
+{
+ if (size == 32)
+ {
+ const unsigned char* const pshdrs = sd->section_headers->data();
+ const unsigned char* namesu = sd->section_names->data();
+ const char* names = reinterpret_cast<const char*>(namesu);
+ section_size_type names_size = sd->section_names_size;
+ const unsigned char* s;
+
+ s = this->find_shdr(pshdrs, ".got2", names, names_size, NULL);
+ if (s != NULL)
+ {
+ unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size;
+ this->set_got2_shndx(ndx);
+ }
+ }
+ return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd);
+}
+
+// Set up PowerPC target specific relobj.
+
+template<int size, bool big_endian>
+Object*
+Target_powerpc<size, big_endian>::do_make_elf_object(
+ const std::string& name,
+ Input_file* input_file,
+ off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr)
+{
+ int et = ehdr.get_e_type();
+ if (et == elfcpp::ET_REL)
+ {
+ Powerpc_relobj<size, big_endian>* obj =
+ new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr);
+ obj->setup();
+ return obj;
+ }
+ else if (et == elfcpp::ET_DYN)
+ {
+ Sized_dynobj<size, big_endian>* obj =
+ new Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr);
+ obj->setup();
+ return obj;
+ }
+ else
+ {
+ gold_error(_("%s: unsupported ELF file type %d"),
+ name.c_str(), et);
+ return NULL;
+ }
+}
+
+template<int size, bool big_endian>
+class Output_data_got_powerpc : public Output_data_got<size, big_endian>
+{
+public:
+ typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype;
+ typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn;
+
+ Output_data_got_powerpc(Symbol_table* symtab, Layout* layout)
+ : Output_data_got<size, big_endian>(),
+ symtab_(symtab), layout_(layout),
+ header_ent_cnt_(size == 32 ? 3 : 1),
+ header_index_(size == 32 ? 0x2000 : 0)
+ {}
+
+ class Got_entry;
+
+ // Create a new GOT entry and return its offset.
+ unsigned int
+ add_got_entry(Got_entry got_entry)
+ {
+ this->reserve_ent();
+ return Output_data_got<size, big_endian>::add_got_entry(got_entry);
+ }
+
+ // Create a pair of new GOT entries and return the offset of the first.
+ unsigned int
+ add_got_entry_pair(Got_entry got_entry_1, Got_entry got_entry_2)
+ {
+ this->reserve_ent(2);
+ return Output_data_got<size, big_endian>::add_got_entry_pair(got_entry_1,
+ got_entry_2);
+ }
+
+ // Value of _GLOBAL_OFFSET_TABLE_
+ unsigned int
+ g_o_t() const
+ {
+ return this->got_offset(this->header_index_);
+ }
+
+ // Ensure our GOT has a header.
+ void
+ set_final_data_size()
{
- typename elfcpp::Elf_types<size>::Elf_Addr reloc;
+ if (this->header_ent_cnt_ != 0)
+ this->make_header();
+ Output_data_got<size, big_endian>::set_final_data_size();
+ }
- reloc = (psymval->value(object, addend) - address);
- if (reloc & 0x8000)
- reloc += 0x10000;
- reloc >>= 16;
+ // First word of GOT header needs some values that are not
+ // handled by Output_data_got so poke them in here.
+ // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase.
+ void
+ do_write(Output_file* of)
+ {
+ replace_constant(this->header_index_,
+ (size == 32
+ ? this->layout_->dynamic_section()->address()
+ : this->address() + 0x8000));
- elfcpp::Swap<16, big_endian>::writeval(view, reloc);
+ Output_data_got<size, big_endian>::do_write(of);
}
+
+private:
+ void
+ reserve_ent(unsigned int cnt = 1)
+ {
+ if (this->header_ent_cnt_ == 0)
+ return;
+ if (this->num_entries() + cnt > this->header_index_)
+ this->make_header();
+ }
+
+ void
+ make_header()
+ {
+ this->header_ent_cnt_ = 0;
+ this->header_index_ = this->num_entries();
+ if (size == 32)
+ {
+ Output_data_got<size, big_endian>::add_constant(0);
+ Output_data_got<size, big_endian>::add_constant(0);
+ Output_data_got<size, big_endian>::add_constant(0);
+
+ // Define _GLOBAL_OFFSET_TABLE_ at the header
+ this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
+ Symbol_table::PREDEFINED,
+ this, this->g_o_t(), 0,
+ elfcpp::STT_OBJECT,
+ elfcpp::STB_LOCAL,
+ elfcpp::STV_HIDDEN,
+ 0, false, false);
+ }
+ else
+ Output_data_got<size, big_endian>::add_constant(0);
+ }
+
+ // Stashed pointers.
+ Symbol_table* symtab_;
+ Layout* layout_;
+
+ // GOT header size.
+ unsigned int header_ent_cnt_;
+ // GOT header index.
+ unsigned int header_index_;
};
// Get the GOT section, creating it if necessary.
template<int size, bool big_endian>
-Output_data_got<size, big_endian>*
+Output_data_got_powerpc<size, big_endian>*
Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab,
Layout* layout)
{
{
gold_assert(symtab != NULL && layout != NULL);
- this->got_ = new Output_data_got<size, big_endian>();
+ this->got_
+ = new Output_data_got_powerpc<size, big_endian>(symtab, layout);
layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE,
this->got_, ORDER_DATA, false);
-
- // Create the GOT2 or TOC in the .got section.
- if (size == 32)
- {
- this->got2_ = new Output_data_space(4, "** GOT2");
- layout->add_output_section_data(".got2", elfcpp::SHT_PROGBITS,
- elfcpp::SHF_ALLOC
- | elfcpp::SHF_WRITE,
- this->got2_, ORDER_DATA, false);
- }
- else
- {
- this->toc_ = new Output_data_space(8, "** TOC");
- layout->add_output_section_data(".toc", elfcpp::SHT_PROGBITS,
- elfcpp::SHF_ALLOC
- | elfcpp::SHF_WRITE,
- this->toc_, ORDER_DATA, false);
- }
-
- // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
- symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
- Symbol_table::PREDEFINED,
- this->got_,
- 0, 0, elfcpp::STT_OBJECT,
- elfcpp::STB_LOCAL,
- elfcpp::STV_HIDDEN, 0,
- false, false);
}
return this->got_;
// A class to handle the PLT data.
template<int size, bool big_endian>
-class Output_data_plt_powerpc : public Output_section_data
+class Output_data_plt_powerpc : public Output_section_data_build
{
public:
typedef Output_data_reloc<elfcpp::SHT_RELA, true,
size, big_endian> Reloc_section;
- Output_data_plt_powerpc(Layout*);
+ Output_data_plt_powerpc(Layout*, Target_powerpc<size, big_endian>*);
// Add an entry to the PLT.
- void add_entry(Symbol* gsym);
+ void
+ add_entry(Symbol*);
// Return the .rela.plt section data.
- const Reloc_section* rel_plt() const
- {
+ const Reloc_section*
+ rel_plt() const
+ {
return this->rel_;
}
// Return the number of PLT entries.
unsigned int
entry_count() const
- { return this->count_; }
+ { return (this->current_data_size() - initial_plt_entry_size) / plt_entry_size; }
// Return the offset of the first non-reserved PLT entry.
static unsigned int
first_plt_entry_offset()
- { return 4 * base_plt_entry_size; }
+ { return initial_plt_entry_size; }
// Return the size of a PLT entry.
static unsigned int
get_plt_entry_size()
- { return base_plt_entry_size; }
+ { return plt_entry_size; }
protected:
- void do_adjust_output_section(Output_section* os);
-
- private:
- // The size of an entry in the PLT.
- static const int base_plt_entry_size = (size == 32 ? 16 : 24);
-
- // Set the final size.
void
- set_final_data_size()
+ do_adjust_output_section(Output_section* os)
{
- unsigned int full_count = this->count_ + 4;
-
- this->set_data_size(full_count * base_plt_entry_size);
+ os->set_entsize(0);
}
+ private:
+ // The size of an entry in the PLT.
+ static const int plt_entry_size = size == 32 ? 4 : 24;
+ // The size of the first reserved entry.
+ static const int initial_plt_entry_size = size == 32 ? 0 : 24;
+
// Write out the PLT data.
void
do_write(Output_file*);
// The reloc section.
Reloc_section* rel_;
- // The number of PLT entries.
- unsigned int count_;
+ // Allows access to .glink for do_write.
+ Target_powerpc<size, big_endian>* targ_;
};
-// Create the PLT section. The ordinary .got section is an argument,
-// since we need to refer to the start.
+// Create the PLT section.
template<int size, bool big_endian>
-Output_data_plt_powerpc<size, big_endian>::Output_data_plt_powerpc(Layout* layout)
- : Output_section_data(size == 32 ? 4 : 8), count_(0)
+Output_data_plt_powerpc<size, big_endian>::Output_data_plt_powerpc(Layout* layout,
+ Target_powerpc<size, big_endian>* targ)
+ : Output_section_data_build(size == 32 ? 4 : 8),
+ targ_(targ)
{
this->rel_ = new Reloc_section(false);
layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA,
ORDER_DYNAMIC_PLT_RELOCS, false);
}
-template<int size, bool big_endian>
-void
-Output_data_plt_powerpc<size, big_endian>::do_adjust_output_section(Output_section* os)
-{
- os->set_entsize(0);
-}
-
// Add an entry to the PLT.
template<int size, bool big_endian>
void
Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym)
{
- gold_assert(!gsym->has_plt_offset());
- unsigned int index = this->count_+ + 4;
- section_offset_type plt_offset;
-
- if (index < 8192)
- plt_offset = index * base_plt_entry_size;
- else
- gold_unreachable();
-
- gsym->set_plt_offset(plt_offset);
-
- ++this->count_;
-
- gsym->set_needs_dynsym_entry();
- this->rel_->add_global(gsym, elfcpp::R_POWERPC_JMP_SLOT, this,
- plt_offset, 0);
+ if (!gsym->has_plt_offset())
+ {
+ off_t off = this->current_data_size();
+
+ if (off == 0)
+ off += initial_plt_entry_size;
+ gsym->set_plt_offset(off);
+ gsym->set_needs_dynsym_entry();
+ this->rel_->add_global(gsym, elfcpp::R_POWERPC_JMP_SLOT, this, off, 0);
+ off += plt_entry_size;
+ this->set_current_data_size(off);
+ }
}
static const unsigned int addis_11_11 = 0x3d6b0000;
static const unsigned int b = 0x48000000;
static const unsigned int bcl_20_31 = 0x429f0005;
static const unsigned int bctr = 0x4e800420;
+static const unsigned int blrl = 0x4e800021;
static const unsigned int lis_11 = 0x3d600000;
static const unsigned int lis_12 = 0x3d800000;
static const unsigned int lwzu_0_12 = 0x840c0000;
static const unsigned int mtlr_0 = 0x7c0803a6;
static const unsigned int nop = 0x60000000;
static const unsigned int sub_11_11_12 = 0x7d6c5850;
-
-static const unsigned int addis_r12_r2 = 0x3d820000; /* addis %r12,%r2,xxx@ha */
-static const unsigned int std_r2_40r1 = 0xf8410028; /* std %r2,40(%r1) */
-static const unsigned int ld_r11_0r12 = 0xe96c0000; /* ld %r11,xxx+0@l(%r12) */
-static const unsigned int ld_r2_0r12 = 0xe84c0000; /* ld %r2,xxx+8@l(%r12) */
- /* ld %r11,xxx+16@l(%r12) */
-
+static const unsigned int addis_12_2 = 0x3d820000;
+static const unsigned int std_2_1 = 0xf8410000;
+static const unsigned int ld_11_12 = 0xe96c0000;
+static const unsigned int ld_2_12 = 0xe84c0000;
+static const unsigned int addi_12_12 = 0x398c0000;
+static const unsigned int ld_11_2 = 0xe9620000;
+static const unsigned int addi_2_2 = 0x38420000;
+static const unsigned int ld_2_2 = 0xe8420000;
+static const unsigned int mflr_11 = 0x7d6802a6;
+static const unsigned int ld_2_11 = 0xe84b0000;
+static const unsigned int mtlr_12 = 0x7d8803a6;
+static const unsigned int add_12_2_11 = 0x7d825a14;
+static const unsigned int li_0_0 = 0x38000000;
+static const unsigned int lis_0_0 = 0x3c000000;
+static const unsigned int ori_0_0_0 = 0x60000000;
// Write out the PLT.
void
Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of)
{
- const off_t offset = this->offset();
+ if (size == 32)
+ {
+ const off_t offset = this->offset();
+ const section_size_type oview_size
+ = convert_to_section_size_type(this->data_size());
+ unsigned char* const oview = of->get_output_view(offset, oview_size);
+ unsigned char* pov = oview;
+ unsigned char* endpov = oview + oview_size;
+
+ // The address the .glink branch table
+ const Output_data_glink<size, big_endian>* glink
+ = this->targ_->glink_section();
+ elfcpp::Elf_types<32>::Elf_Addr branch_tab
+ = glink->address() + glink->pltresolve();
+
+ while (pov < endpov)
+ {
+ elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab);
+ pov += 4;
+ branch_tab += 4;
+ }
+
+ of->write_output_view(offset, oview_size, oview);
+ }
+}
+
+// Create the PLT section.
+
+template<int size, bool big_endian>
+void
+Target_powerpc<size, big_endian>::make_plt_section(Layout* layout)
+{
+ if (this->plt_ == NULL)
+ {
+ if (this->glink_ == NULL)
+ make_glink_section(layout);
+
+ // Ensure that .rela.dyn always appears before .rela.plt This is
+ // necessary due to how, on PowerPC and some other targets, .rela.dyn
+ // needs to include .rela.plt in it's range.
+ this->rela_dyn_section(layout);
+
+ this->plt_ = new Output_data_plt_powerpc<size, big_endian>(layout, this);
+ layout->add_output_section_data(".plt",
+ (size == 32
+ ? elfcpp::SHT_PROGBITS
+ : elfcpp::SHT_NOBITS),
+ elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE,
+ this->plt_,
+ (size == 32
+ ? ORDER_SMALL_DATA
+ : ORDER_SMALL_BSS),
+ false);
+ }
+}
+
+// A class to handle .glink.
+
+template<int size, bool big_endian>
+class Output_data_glink : public Output_section_data
+{
+ public:
+ Output_data_glink(Target_powerpc<size, big_endian>*);
+
+ // Add an entry
+ void
+ add_entry(const Symbol*, const elfcpp::Rela<size, big_endian>&,
+ const Sized_relobj<size, big_endian>*, unsigned int);
+
+ unsigned int
+ find_entry(const Symbol*, const elfcpp::Rela<size, big_endian>&,
+ const Sized_relobj<size, big_endian>*, unsigned int) const;
+
+ unsigned int
+ glink_entry_size() const
+ {
+ if (size == 32)
+ return 4 * 4;
+ else
+ // FIXME: We should be using multiple glink sections for
+ // stubs to support > 33M applications.
+ return 8 * 4;
+ }
+
+ off_t
+ pltresolve() const
+ {
+ return this->pltresolve_;
+ }
+
+ private:
+ static const int pltresolve_size = 16*4;
+
+ void
+ set_final_data_size();
+
+ // Write out .glink
+ void
+ do_write(Output_file*);
+
+ struct Glink_sym_ent
+ {
+ Glink_sym_ent(const Symbol *sym,
+ const elfcpp::Rela<size, big_endian>& reloc,
+ const Sized_relobj<size, big_endian>* object,
+ unsigned int shndx)
+ : sym_(sym), object_(0), shndx_(0), addend_(0)
+ {
+ if (size != 32)
+ this->addend_ = reloc.get_r_addend();
+ else if (parameters->options().output_is_position_independent())
+ {
+ if (object != NULL && shndx != 0)
+ this->addend_ = reloc.get_r_addend();
+ if (this->addend_ != 0)
+ {
+ this->object_ = object;
+ this->shndx_ = shndx;
+ }
+ }
+ }
+
+ const Symbol *sym_;
+ const Sized_relobj<size, big_endian>* object_;
+ unsigned int shndx_;
+ unsigned int addend_;
+
+ bool operator==(const Glink_sym_ent& that) const
+ {
+ return (this->sym_ == that.sym_
+ && this->object_ == that.object_
+ && this->shndx_ == that.shndx_
+ && this->addend_ == that.addend_);
+ }
+ };
+
+ struct Glink_sym_ent_hash
+ {
+ size_t operator()(const Glink_sym_ent& ent) const
+ {
+ return (reinterpret_cast<uintptr_t>(ent.sym_)
+ ^ reinterpret_cast<uintptr_t>(ent.object_)
+ ^ ent.shndx_
+ ^ ent.addend_);
+ }
+ };
+
+ // Set of sym/shndx/addend entries.
+ typedef Unordered_map<Glink_sym_ent, unsigned int,
+ Glink_sym_ent_hash> Glink_entries;
+ Glink_entries glink_entries_;
+
+ // Offset of pltresolve stub (actually, branch table for 32-bit)
+ off_t pltresolve_;
+
+ // Allows access to .got and .plt for do_write.
+ Target_powerpc<size, big_endian>* targ_;
+};
+
+// Create the glink section.
+
+template<int size, bool big_endian>
+Output_data_glink<size, big_endian>::Output_data_glink(Target_powerpc<size, big_endian>* targ)
+ : Output_section_data(16),
+ pltresolve_(0), targ_(targ)
+{
+}
+
+// Add an entry to glink, if we do not already have one for this
+// sym/addend/shndx combo.
+
+template<int size, bool big_endian>
+void
+Output_data_glink<size, big_endian>
+::add_entry(const Symbol* gsym,
+ const elfcpp::Rela<size, big_endian>& reloc,
+ const Sized_relobj<size, big_endian>* object,
+ unsigned int shndx)
+{
+ Glink_sym_ent ent(gsym, reloc, object, shndx);
+ unsigned int indx = this->glink_entries_.size();
+ this->glink_entries_[ent] = indx;
+}
+
+template<int size, bool big_endian>
+unsigned int
+Output_data_glink<size, big_endian>
+::find_entry(const Symbol* gsym,
+ const elfcpp::Rela<size, big_endian>& reloc,
+ const Sized_relobj<size, big_endian>* object,
+ unsigned int shndx) const
+{
+ Glink_sym_ent ent(gsym, reloc, object, shndx);
+ 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>
+void
+Output_data_glink<size, big_endian>::set_final_data_size()
+{
+ unsigned int count = this->glink_entries_.size();
+ off_t total = count;
+
+ if (count != 0)
+ {
+ if (size == 32)
+ {
+ total *= 16;
+ this->pltresolve_ = total;
+
+ // space for branch table
+ total += 4 * (count - 1);
+
+ total += -total & 15;
+ total += this->pltresolve_size;
+ }
+ else
+ {
+ total *= 32;
+ this->pltresolve_ = total;
+ total += this->pltresolve_size;
+
+ // space for branch table
+ total += 8 * count;
+ if (count > 0x8000)
+ total += 4 * (count - 0x8000);
+ }
+ }
+
+ this->set_data_size(total);
+}
+
+static inline uint32_t
+l(uint32_t a)
+{
+ return a & 0xffff;
+}
+
+static inline uint32_t
+hi(uint32_t a)
+{
+ return l(a >> 16);
+}
+
+static inline uint32_t
+ha(uint32_t a)
+{
+ return hi(a + 0x8000);
+}
+
+template<bool big_endian>
+static inline void
+write_insn(unsigned char *p, uint32_t v)
+{
+ elfcpp::Swap<32, big_endian>::writeval(p, v);
+}
+
+// Write out .glink.
+
+template<int size, bool big_endian>
+void
+Output_data_glink<size, big_endian>::do_write(Output_file* of)
+{
+ const off_t off = this->offset();
const section_size_type oview_size =
convert_to_section_size_type(this->data_size());
- unsigned char* const oview = of->get_output_view(offset, oview_size);
- unsigned char* pov = oview;
+ unsigned char* const oview = of->get_output_view(off, oview_size);
+ unsigned char *p;
+
+ // The base address of the .plt section.
+ uint32_t plt_base = this->targ_->plt_section()->address();
+
+ // The address of _GLOBAL_OFFSET_TABLE_.
+ const Output_data_got_powerpc<size, big_endian> *got;
+ typename elfcpp::Elf_types<size>::Elf_Addr g_o_t;
+ got = this->targ_->got_section();
+ g_o_t = got->address() + got->g_o_t();
+
+ if (size == 64)
+ {
+ // Write out call stubs.
+ typename Glink_entries::const_iterator g;
+ for (g = this->glink_entries_.begin();
+ g != this->glink_entries_.end();
+ ++g)
+ {
+ uint64_t plt_addr = plt_base + g->first.sym_->plt_offset();
+ uint64_t got_addr = g_o_t;
+ uint64_t pltoff = plt_addr - got_addr;
+
+ if (pltoff + 0x80008000 > 0xffffffff || (pltoff & 7) != 0)
+ gold_error(_("%s: linkage table error against `%s'"),
+ g->first.object_->name().c_str(),
+ g->first.sym_->demangled_name().c_str());
+
+ p = oview + g->second * this->glink_entry_size();
+ if (ha(pltoff) != 0)
+ {
+ write_insn<big_endian>(p, addis_12_2 + ha(pltoff)), p += 4;
+ write_insn<big_endian>(p, std_2_1 + 40), p += 4;
+ write_insn<big_endian>(p, ld_11_12 + l(pltoff)), p += 4;
+ if (ha(pltoff + 16) != ha(pltoff))
+ {
+ write_insn<big_endian>(p, addi_12_12 + l(pltoff)), p += 4;
+ pltoff = 0;
+ }
+ write_insn<big_endian>(p, mtctr_11), p += 4;
+ write_insn<big_endian>(p, ld_2_12 + l(pltoff + 8)), p += 4;
+ write_insn<big_endian>(p, ld_11_12 + l(pltoff + 16)), p += 4;
+ write_insn<big_endian>(p, bctr), p += 4;
+ }
+ else
+ {
+ write_insn<big_endian>(p, std_2_1 + 40), p += 4;
+ write_insn<big_endian>(p, ld_11_2 + l(pltoff)), p += 4;
+ if (ha(pltoff + 16) != ha(pltoff))
+ {
+ write_insn<big_endian>(p, addi_2_2 + l(pltoff)), p += 4;
+ pltoff = 0;
+ }
+ write_insn<big_endian>(p, mtctr_11), p += 4;
+ write_insn<big_endian>(p, ld_11_2 + l(pltoff + 16)), p += 4;
+ write_insn<big_endian>(p, ld_2_2 + l(pltoff + 8)), p += 4;
+ write_insn<big_endian>(p, bctr), p += 4;
+ }
+ }
- memset(pov, 0, base_plt_entry_size * 4);
- pov += base_plt_entry_size * 4;
+ // Write pltresolve stub.
+ p = oview + this->pltresolve_;
+ uint64_t after_bcl = this->address() + this->pltresolve_ + 16;
+ uint64_t pltoff = plt_base - after_bcl;
+
+ elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8;
+
+ write_insn<big_endian>(p, mflr_12), p += 4;
+ write_insn<big_endian>(p, bcl_20_31), p += 4;
+ write_insn<big_endian>(p, mflr_11), p += 4;
+ write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4;
+ write_insn<big_endian>(p, mtlr_12), p += 4;
+ write_insn<big_endian>(p, add_12_2_11), p += 4;
+ write_insn<big_endian>(p, ld_11_12 + 0), p += 4;
+ write_insn<big_endian>(p, ld_2_12 + 8), p += 4;
+ write_insn<big_endian>(p, mtctr_11), p += 4;
+ write_insn<big_endian>(p, ld_11_12 + 16), p += 4;
+ write_insn<big_endian>(p, bctr), p += 4;
+ while (p < oview + this->pltresolve_ + this->pltresolve_size)
+ write_insn<big_endian>(p, nop), p += 4;
+
+ // Write lazy link call stubs.
+ uint32_t indx = 0;
+ while (p < oview + oview_size)
+ {
+ if (indx < 0x8000)
+ {
+ write_insn<big_endian>(p, li_0_0 + indx), p += 4;
+ }
+ else
+ {
+ write_insn<big_endian>(p, lis_0_0 + hi(indx)), p += 4;
+ write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4;
+ }
+ uint16_t branch_off = this->pltresolve_ + 8 - (p - oview);
+ write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4;
+ indx++;
+ }
+ }
+ else
+ {
+ // Write out call stubs.
+ typename Glink_entries::const_iterator g;
+ for (g = this->glink_entries_.begin();
+ g != this->glink_entries_.end();
+ ++g)
+ {
+ uint32_t plt_addr = plt_base + g->first.sym_->plt_offset();
+ uint32_t got_addr;
+
+ p = oview + g->second * this->glink_entry_size();
+ if (parameters->options().output_is_position_independent())
+ {
+ if (g->first.shndx_)
+ got_addr = (g->first.object_->output_section(g->first.shndx_)->address()
+ + g->first.object_->output_section_offset(g->first.shndx_)
+ + g->first.addend_);
+ else
+ got_addr = g_o_t;
+
+ uint32_t pltoff = plt_addr - got_addr;
+ if (ha(pltoff) == 0)
+ {
+ write_insn<big_endian>(p + 0, lwz_11_30 + l(pltoff));
+ write_insn<big_endian>(p + 4, mtctr_11);
+ write_insn<big_endian>(p + 8, bctr);
+ }
+ else
+ {
+ write_insn<big_endian>(p + 0, addis_11_30 + ha(pltoff));
+ write_insn<big_endian>(p + 4, lwz_11_11 + l(pltoff));
+ write_insn<big_endian>(p + 8, mtctr_11);
+ write_insn<big_endian>(p + 12, bctr);
+ }
+ }
+ else
+ {
+ write_insn<big_endian>(p + 0, lis_11 + ha(plt_addr));
+ write_insn<big_endian>(p + 4, lwz_11_11 + l(plt_addr));
+ write_insn<big_endian>(p + 8, mtctr_11);
+ write_insn<big_endian>(p + 12, bctr);
+ }
+ }
- unsigned int plt_offset = base_plt_entry_size * 4;
- const unsigned int count = this->count_;
+ // Write out pltresolve branch table.
+ p = oview + this->pltresolve_;
+ unsigned int the_end = oview_size - this->pltresolve_size;
+ unsigned char *end_p = oview + the_end;
+ while (p < end_p - 8 * 4)
+ write_insn<big_endian>(p, b + end_p - p), p += 4;
+ while (p < end_p)
+ write_insn<big_endian>(p, nop), p += 4;
- if (size == 64)
- {
- for (unsigned int i = 0; i < count; i++)
+ // Write out pltresolve call stub.
+ if (parameters->options().output_is_position_independent())
{
+ uint32_t res0_off = this->pltresolve_;
+ uint32_t after_bcl_off = the_end + 12;
+ uint32_t bcl_res0 = after_bcl_off - res0_off;
+
+ write_insn<big_endian>(p + 0, addis_11_11 + ha(bcl_res0));
+ write_insn<big_endian>(p + 4, mflr_0);
+ write_insn<big_endian>(p + 8, bcl_20_31);
+ write_insn<big_endian>(p + 12, addi_11_11 + l(bcl_res0));
+ write_insn<big_endian>(p + 16, mflr_12);
+ write_insn<big_endian>(p + 20, mtlr_0);
+ write_insn<big_endian>(p + 24, sub_11_11_12);
+
+ uint32_t got_bcl = g_o_t + 4 - (after_bcl_off + this->address());
+
+ write_insn<big_endian>(p + 28, addis_12_12 + ha(got_bcl));
+ if (ha(got_bcl) == ha(got_bcl + 4))
+ {
+ write_insn<big_endian>(p + 32, lwz_0_12 + l(got_bcl));
+ write_insn<big_endian>(p + 36, lwz_12_12 + l(got_bcl + 4));
+ }
+ else
+ {
+ write_insn<big_endian>(p + 32, lwzu_0_12 + l(got_bcl));
+ write_insn<big_endian>(p + 36, lwz_12_12 + 4);
+ }
+ write_insn<big_endian>(p + 40, mtctr_0);
+ write_insn<big_endian>(p + 44, add_0_11_11);
+ write_insn<big_endian>(p + 48, add_11_0_11);
+ write_insn<big_endian>(p + 52, bctr);
+ write_insn<big_endian>(p + 56, nop);
+ write_insn<big_endian>(p + 60, nop);
}
- }
- else
- {
- for (unsigned int i = 0; i < count; i++)
+ else
{
- elfcpp::Swap<32, true>::writeval(pov + 0x00,
- lwz_11_30 + plt_offset);
- elfcpp::Swap<32, true>::writeval(pov + 0x04, mtctr_11);
- elfcpp::Swap<32, true>::writeval(pov + 0x08, bctr);
- elfcpp::Swap<32, true>::writeval(pov + 0x0c, nop);
- pov += base_plt_entry_size;
- plt_offset += base_plt_entry_size;
+ uint32_t res0 = this->pltresolve_ + this->address();
+
+ write_insn<big_endian>(p + 0, lis_12 + ha(g_o_t + 4));
+ write_insn<big_endian>(p + 4, addis_11_11 + ha(-res0));
+ if (ha(g_o_t + 4) == ha(g_o_t + 8))
+ write_insn<big_endian>(p + 8, lwz_0_12 + l(g_o_t + 4));
+ else
+ write_insn<big_endian>(p + 8, lwzu_0_12 + l(g_o_t + 4));
+ write_insn<big_endian>(p + 12, addi_11_11 + l(-res0));
+ write_insn<big_endian>(p + 16, mtctr_0);
+ write_insn<big_endian>(p + 20, add_0_11_11);
+ if (ha(g_o_t + 4) == ha(g_o_t + 8))
+ write_insn<big_endian>(p + 24, lwz_12_12 + l(g_o_t + 8));
+ else
+ write_insn<big_endian>(p + 24, lwz_12_12 + 4);
+ write_insn<big_endian>(p + 28, add_11_0_11);
+ write_insn<big_endian>(p + 32, bctr);
+ write_insn<big_endian>(p + 36, nop);
+ write_insn<big_endian>(p + 40, nop);
+ write_insn<big_endian>(p + 44, nop);
+ write_insn<big_endian>(p + 48, nop);
+ write_insn<big_endian>(p + 52, nop);
+ write_insn<big_endian>(p + 56, nop);
+ write_insn<big_endian>(p + 60, nop);
}
+ p += 64;
}
- gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
+ of->write_output_view(off, oview_size, oview);
+}
+
+// Create the glink section.
- of->write_output_view(offset, oview_size, oview);
+template<int size, bool big_endian>
+void
+Target_powerpc<size, big_endian>::make_glink_section(Layout* layout)
+{
+ if (this->glink_ == NULL)
+ {
+ this->glink_ = new Output_data_glink<size, big_endian>(this);
+ layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS,
+ elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR,
+ this->glink_, ORDER_TEXT, false);
+ }
}
// Create a PLT entry for a global symbol.
template<int size, bool big_endian>
void
-Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab,
- Layout* layout,
- Symbol* gsym)
+Target_powerpc<size, big_endian>::make_plt_entry(Layout* layout,
+ Symbol* gsym,
+ const elfcpp::Rela<size, big_endian>& reloc,
+ const Sized_relobj<size, big_endian>* object)
{
- if (gsym->has_plt_offset())
- return;
-
if (this->plt_ == NULL)
- {
- // Create the GOT section first.
- this->got_section(symtab, layout);
+ this->make_plt_section(layout);
- // Ensure that .rela.dyn always appears before .rela.plt This is
- // necessary due to how, on PowerPC and some other targets, .rela.dyn
- // needs to include .rela.plt in it's range.
- this->rela_dyn_section(layout);
+ this->plt_->add_entry(gsym);
- this->plt_ = new Output_data_plt_powerpc<size, big_endian>(layout);
- layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
- (elfcpp::SHF_ALLOC
- | elfcpp::SHF_EXECINSTR
- | elfcpp::SHF_WRITE),
- this->plt_, ORDER_PLT, false);
-
- // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
- symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
- Symbol_table::PREDEFINED,
- this->plt_,
- 0, 0, elfcpp::STT_OBJECT,
- elfcpp::STB_LOCAL,
- elfcpp::STV_HIDDEN, 0,
- false, false);
+ unsigned int got2_shndx = 0;
+ if (size == 32 && object != NULL)
+ {
+ const Powerpc_relobj<size, big_endian>* ppc_obj
+ = static_cast<const Powerpc_relobj<size, big_endian>*>(object);
+ got2_shndx = ppc_obj->got2_shndx();
}
-
- this->plt_->add_entry(gsym);
+ this->glink_->add_entry(gsym, reloc, object, got2_shndx);
}
// Return the number of entries in the PLT.
{
gold_assert(symtab != NULL && layout != NULL && object != NULL);
Reloc_section* rela_dyn = this->rela_dyn_section(layout);
- Output_data_got<size, big_endian>* got;
+ Output_data_got_powerpc<size, big_endian>* got;
unsigned int got_offset;
got = this->got_section(symtab, layout);
+ got->reserve_ent(2);
got_offset = got->add_constant(0);
rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got,
got_offset, 0);
// symbol. IS_FINAL is true if the final address of this symbol is
// known at link time.
-static tls::Tls_optimization
-optimize_tls_reloc(bool /* is_final */, int r_type)
+template<int size, bool big_endian>
+tls::Tls_optimization
+Target_powerpc<size, big_endian>::optimize_tls_reloc(bool, int)
{
// If we are generating a shared library, then we can't do anything
// in the linker.
if (parameters->options().shared())
return tls::TLSOPT_NONE;
- switch (r_type)
- {
- // XXX
- default:
- gold_unreachable();
- }
+ // FIXME
+ return tls::TLSOPT_NONE;
}
// Get the Reference_flags for a particular relocation.
case elfcpp::R_POWERPC_GOT16_LO:
case elfcpp::R_POWERPC_GOT16_HI:
case elfcpp::R_POWERPC_GOT16_HA:
- case elfcpp::R_PPC64_TOC16:
- case elfcpp::R_PPC64_TOC16_LO:
- case elfcpp::R_PPC64_TOC16_HI:
- case elfcpp::R_PPC64_TOC16_HA:
- case elfcpp::R_PPC64_TOC16_DS:
- case elfcpp::R_PPC64_TOC16_LO_DS:
{
- // The symbol requires a GOT entry.
- Output_data_got<size, big_endian>* got;
+ // The symbol requires a GOT entry.
+ Output_data_got_powerpc<size, big_endian>* got;
unsigned int r_sym;
got = target->got_section(symtab, layout);
}
break;
+ case elfcpp::R_PPC64_TOC16:
+ case elfcpp::R_PPC64_TOC16_LO:
+ case elfcpp::R_PPC64_TOC16_HI:
+ case elfcpp::R_PPC64_TOC16_HA:
+ case elfcpp::R_PPC64_TOC16_DS:
+ case elfcpp::R_PPC64_TOC16_LO_DS:
case elfcpp::R_PPC64_TOC:
// We need a GOT section.
target->got_section(symtab, layout);
case elfcpp::R_POWERPC_NONE:
case elfcpp::R_POWERPC_GNU_VTINHERIT:
case elfcpp::R_POWERPC_GNU_VTENTRY:
- break;
-
- case elfcpp::R_PPC_PLTREL24:
- // If the symbol is fully resolved, this is just a PC32 reloc.
- // Otherwise we need a PLT entry.
- if (gsym->final_value_is_known())
- break;
- // If building a shared library, we can also skip the PLT entry
- // if the symbol is defined in the output file and is protected
- // or hidden.
- if (gsym->is_defined()
- && !gsym->is_from_dynobj()
- && !gsym->is_preemptible())
- break;
- target->make_plt_entry(symtab, layout, gsym);
+ case elfcpp::R_PPC_LOCAL24PC:
break;
case elfcpp::R_POWERPC_ADDR16:
case elfcpp::R_POWERPC_ADDR32:
case elfcpp::R_PPC64_ADDR64:
{
- // Make a PLT entry if necessary.
- if (gsym->needs_plt_entry())
- {
- target->make_plt_entry(symtab, layout, gsym);
+ // Make a PLT entry if necessary.
+ if (gsym->needs_plt_entry())
+ {
+ 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
// the PLT entry.
- if (gsym->is_from_dynobj() && !parameters->options().shared())
+ if (size == 32
+ && gsym->is_from_dynobj() && !parameters->options().shared())
gsym->set_needs_dynsym_value();
- }
- // Make a dynamic relocation if necessary.
- if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
- {
- if (gsym->may_need_copy_reloc())
- {
- target->copy_reloc(symtab, layout, object,
- data_shndx, output_section, gsym, reloc);
- }
- else if ((r_type == elfcpp::R_POWERPC_ADDR32
+ }
+ // Make a dynamic relocation if necessary.
+ if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
+ {
+ if (gsym->may_need_copy_reloc())
+ {
+ target->copy_reloc(symtab, layout, object,
+ data_shndx, output_section, gsym, reloc);
+ }
+ else if ((r_type == elfcpp::R_POWERPC_ADDR32
|| r_type == elfcpp::R_PPC64_ADDR64)
&& gsym->can_use_relative_reloc(false))
{
}
break;
+ case elfcpp::R_PPC_PLTREL24:
case elfcpp::R_POWERPC_REL24:
- case elfcpp::R_PPC_LOCAL24PC:
- case elfcpp::R_PPC_REL16:
- case elfcpp::R_PPC_REL16_LO:
- case elfcpp::R_PPC_REL16_HI:
- case elfcpp::R_PPC_REL16_HA:
{
- if (gsym->needs_plt_entry())
- target->make_plt_entry(symtab, layout, gsym);
+ if (gsym->needs_plt_entry()
+ || (!gsym->final_value_is_known()
+ && !(gsym->is_defined()
+ && !gsym->is_from_dynobj()
+ && !gsym->is_preemptible())))
+ {
+ if (r_type == elfcpp::R_PPC_PLTREL24)
+ target->make_plt_entry(layout, gsym, reloc, object);
+ else
+ target->make_plt_entry(layout, gsym, reloc, 0);
+ }
// Make a dynamic relocation if necessary.
if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
{
}
break;
+ case elfcpp::R_PPC_REL16:
+ case elfcpp::R_PPC_REL16_LO:
+ case elfcpp::R_PPC_REL16_HI:
+ case elfcpp::R_PPC_REL16_HA:
+ break;
+
case elfcpp::R_POWERPC_GOT16:
case elfcpp::R_POWERPC_GOT16_LO:
case elfcpp::R_POWERPC_GOT16_HI:
case elfcpp::R_POWERPC_GOT16_HA:
- case elfcpp::R_PPC64_TOC16:
- case elfcpp::R_PPC64_TOC16_LO:
- case elfcpp::R_PPC64_TOC16_HI:
- case elfcpp::R_PPC64_TOC16_HA:
- case elfcpp::R_PPC64_TOC16_DS:
- case elfcpp::R_PPC64_TOC16_LO_DS:
{
- // The symbol requires a GOT entry.
- Output_data_got<size, big_endian>* got;
+ // The symbol requires a GOT entry.
+ Output_data_got_powerpc<size, big_endian>* got;
got = target->got_section(symtab, layout);
if (gsym->final_value_is_known())
break;
case elfcpp::R_PPC64_TOC:
+ case elfcpp::R_PPC64_TOC16:
+ case elfcpp::R_PPC64_TOC16_LO:
+ case elfcpp::R_PPC64_TOC16_HI:
+ case elfcpp::R_PPC64_TOC16_HA:
+ case elfcpp::R_PPC64_TOC16_DS:
+ case elfcpp::R_PPC64_TOC16_LO_DS:
// We need a GOT section.
target->got_section(symtab, layout);
break;
{
typedef Target_powerpc<size, big_endian> Powerpc;
typedef typename Target_powerpc<size, big_endian>::Scan Scan;
- static Output_data_space* sdata;
if (sh_type == elfcpp::SHT_REL)
{
return;
}
- // Define _SDA_BASE_ at the start of the .sdata section.
- if (sdata == NULL)
- {
- // layout->find_output_section(".sdata") == NULL
- sdata = new Output_data_space(4, "** sdata");
- Output_section* os = layout->add_output_section_data(".sdata", 0,
- elfcpp::SHF_ALLOC
- | elfcpp::SHF_WRITE,
- sdata,
- ORDER_SMALL_DATA,
- false);
- symtab->define_in_output_data("_SDA_BASE_", NULL,
- Symbol_table::PREDEFINED,
- os,
- 32768, 0,
- elfcpp::STT_OBJECT,
- elfcpp::STB_LOCAL,
- elfcpp::STV_HIDDEN, 0,
- false, false);
- }
+ if (size == 32)
+ {
+ static Output_data_space* sdata;
+
+ // Define _SDA_BASE_ at the start of the .sdata section.
+ if (sdata == NULL)
+ {
+ // layout->find_output_section(".sdata") == NULL
+ sdata = new Output_data_space(4, "** sdata");
+ Output_section* os
+ = layout->add_output_section_data(".sdata", 0,
+ elfcpp::SHF_ALLOC
+ | elfcpp::SHF_WRITE,
+ sdata, ORDER_SMALL_DATA, false);
+ symtab->define_in_output_data("_SDA_BASE_", NULL,
+ Symbol_table::PREDEFINED,
+ os, 32768, 0, elfcpp::STT_OBJECT,
+ elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN,
+ 0, false, false);
+ }
+ }
gold::scan_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan>(
symtab,
layout->add_target_dynamic_tags(false, this->plt_, rel_plt,
this->rela_dyn_, true, size == 32);
+ if (size == 32)
+ {
+ this->got_->finalize_data_size();
+ Output_data_dynamic* odyn = layout->dynamic_data();
+ odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT,
+ this->got_, this->got_->g_o_t());
+ }
+
// Emit any relocs we saved in an attempt to avoid generating COPY
// relocs.
if (this->copy_relocs_.any_saved_relocs())
Target_powerpc<size, big_endian>::Relocate::relocate(
const Relocate_info<size, big_endian>* relinfo,
Target_powerpc* target,
- Output_section*,
+ Output_section* os,
size_t relnum,
const elfcpp::Rela<size, big_endian>& rela,
unsigned int r_type,
{
const unsigned int toc_base_offset = 0x8000;
typedef Powerpc_relocate_functions<size, big_endian> Reloc;
-
- // Pick the value to use for symbols defined in shared objects.
- Symbol_value<size> symval;
- if (gsym != NULL
- && gsym->use_plt_offset(Scan::get_reference_flags(r_type)))
+ const Powerpc_relobj<size, big_endian>* const object
+ = static_cast<const Powerpc_relobj<size, big_endian>*>(relinfo->object);
+ elfcpp::Elf_Xword value;
+
+ if (r_type == elfcpp::R_POWERPC_GOT16
+ || r_type == elfcpp::R_POWERPC_GOT16_LO
+ || r_type == elfcpp::R_POWERPC_GOT16_HI
+ || r_type == elfcpp::R_POWERPC_GOT16_HA
+ || r_type == elfcpp::R_PPC64_GOT16_DS
+ || r_type == elfcpp::R_PPC64_GOT16_LO_DS)
{
- elfcpp::Elf_Xword value;
-
- value = target->plt_section()->address() + gsym->plt_offset();
-
- symval.set_output_value(value);
-
- psymval = &symval;
+ if (gsym != NULL)
+ {
+ gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
+ value = gsym->got_offset(GOT_TYPE_STANDARD);
+ }
+ else
+ {
+ unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
+ gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
+ value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
+ }
+ value -= target->got_section()->g_o_t();
+ }
+ else if (r_type == elfcpp::R_PPC64_TOC)
+ {
+ value = target->got_section()->address() + toc_base_offset;
+ }
+ else if (gsym != NULL
+ && (r_type == elfcpp::R_POWERPC_REL24
+ || r_type == elfcpp::R_PPC_PLTREL24)
+ && gsym->use_plt_offset(Scan::get_reference_flags(r_type)))
+ {
+ const Output_data_glink<size, big_endian>* glink;
+
+ glink = target->glink_section();
+ unsigned int shndx = 0;
+ if (size == 32 && r_type == elfcpp::R_PPC_PLTREL24)
+ shndx = object->got2_shndx();
+ unsigned int glink_index = glink->find_entry(gsym, rela, object, shndx);
+ value = glink->address() + glink_index * glink->glink_entry_size();
+ }
+ else
+ {
+ elfcpp::Elf_Xword addend = 0;
+ if (r_type != elfcpp::R_PPC_PLTREL24)
+ addend = rela.get_r_addend();
+ value = psymval->value(object, addend);
}
- const Sized_relobj_file<size, big_endian>* object = relinfo->object;
- elfcpp::Elf_Xword addend = rela.get_r_addend();
-
- // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT
- // pointer points to the beginning, not the end, of the table.
- // So we just use the plain offset.
- unsigned int got_offset = 0;
- unsigned int got2_offset = 0;
switch (r_type)
{
case elfcpp::R_PPC64_TOC16:
case elfcpp::R_PPC64_TOC16_HA:
case elfcpp::R_PPC64_TOC16_DS:
case elfcpp::R_PPC64_TOC16_LO_DS:
- // Subtract the TOC base address.
- addend -= target->toc_section()->address() + toc_base_offset;
- /* FALLTHRU */
-
- case elfcpp::R_POWERPC_GOT16:
- case elfcpp::R_POWERPC_GOT16_LO:
- case elfcpp::R_POWERPC_GOT16_HI:
- case elfcpp::R_POWERPC_GOT16_HA:
- case elfcpp::R_PPC64_GOT16_DS:
- case elfcpp::R_PPC64_GOT16_LO_DS:
- if (gsym != NULL)
- {
- gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
- got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
- }
- else
- {
- unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info());
- gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD));
- got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD);
- }
+ // Subtract the TOC base address.
+ value -= target->got_section()->address() + toc_base_offset;
break;
- // R_PPC_PLTREL24 is rather special. If non-zero,
- // the addend specifies the GOT pointer offset within .got2.
- case elfcpp::R_PPC_PLTREL24:
- if (addend >= 32768)
- {
- Output_data_space* got2;
- got2 = target->got2_section();
- got2_offset = got2->offset();
- addend += got2_offset;
- }
+ case elfcpp::R_POWERPC_SECTOFF:
+ case elfcpp::R_POWERPC_SECTOFF_LO:
+ case elfcpp::R_POWERPC_SECTOFF_HI:
+ case elfcpp::R_POWERPC_SECTOFF_HA:
+ case elfcpp::R_PPC64_SECTOFF_DS:
+ case elfcpp::R_PPC64_SECTOFF_LO_DS:
+ if (os != NULL)
+ value -= os->address();
break;
default:
break;
case elfcpp::R_POWERPC_REL32:
- Reloc::rel32(view, object, psymval, addend, address);
+ Reloc::rel32(view, value, 0, address);
break;
case elfcpp::R_POWERPC_REL24:
- Reloc::rel24(view, object, psymval, addend, address);
- break;
-
- case elfcpp::R_POWERPC_REL14:
- Reloc::rel14(view, object, psymval, addend, address);
- break;
-
case elfcpp::R_PPC_PLTREL24:
- Reloc::rel24(view, object, psymval, addend, address);
+ case elfcpp::R_PPC_LOCAL24PC:
+ Reloc::rel24(view, value, 0, address);
break;
- case elfcpp::R_PPC_LOCAL24PC:
- Reloc::rel24(view, object, psymval, addend, address);
+ case elfcpp::R_POWERPC_REL14:
+ Reloc::rel14(view, value, 0, address);
break;
case elfcpp::R_PPC64_ADDR64:
- if (!parameters->options().output_is_position_independent())
- Relocate_functions<size, big_endian>::rela64(view, object,
- psymval, addend);
+ case elfcpp::R_PPC64_TOC:
+ Relocate_functions<size, big_endian>::rela64(view, value, 0);
break;
case elfcpp::R_POWERPC_ADDR32:
- if (!parameters->options().output_is_position_independent())
- Relocate_functions<size, big_endian>::rela32(view, object,
- psymval, addend);
- break;
-
- case elfcpp::R_POWERPC_ADDR16_LO:
- Reloc::addr16_lo(view, object, psymval, addend);
- break;
-
- case elfcpp::R_POWERPC_ADDR16_HI:
- Reloc::addr16_hi(view, object, psymval, addend);
- break;
-
- case elfcpp::R_POWERPC_ADDR16_HA:
- Reloc::addr16_ha(view, object, psymval, addend);
- break;
-
- case elfcpp::R_PPC_REL16_LO:
- Reloc::rel16_lo(view, object, psymval, addend, address);
- break;
-
- case elfcpp::R_PPC_REL16_HI:
- Reloc::rel16_lo(view, object, psymval, addend, address);
- break;
-
- case elfcpp::R_PPC_REL16_HA:
- Reloc::rel16_ha(view, object, psymval, addend, address);
+ Relocate_functions<size, big_endian>::rela32(view, value, 0);
break;
+ case elfcpp::R_POWERPC_ADDR16:
+ case elfcpp::R_PPC64_TOC16:
case elfcpp::R_POWERPC_GOT16:
- Reloc::addr16(view, got_offset, addend);
+ case elfcpp::R_POWERPC_SECTOFF:
+ Reloc::addr16(view, value, 0);
break;
+ case elfcpp::R_POWERPC_ADDR16_LO:
+ case elfcpp::R_PPC64_TOC16_LO:
case elfcpp::R_POWERPC_GOT16_LO:
- Reloc::addr16_lo(view, got_offset, addend);
+ case elfcpp::R_POWERPC_SECTOFF_LO:
+ Reloc::addr16_lo(view, value, 0);
break;
+ case elfcpp::R_POWERPC_ADDR16_HI:
+ case elfcpp::R_PPC64_TOC16_HI:
case elfcpp::R_POWERPC_GOT16_HI:
- Reloc::addr16_hi(view, got_offset, addend);
+ case elfcpp::R_POWERPC_SECTOFF_HI:
+ Reloc::addr16_hi(view, value, 0);
break;
+ case elfcpp::R_POWERPC_ADDR16_HA:
+ case elfcpp::R_PPC64_TOC16_HA:
case elfcpp::R_POWERPC_GOT16_HA:
- Reloc::addr16_ha(view, got_offset, addend);
+ case elfcpp::R_POWERPC_SECTOFF_HA:
+ Reloc::addr16_ha(view, value, 0);
break;
- case elfcpp::R_PPC64_TOC16:
- Reloc::addr16(view, got_offset, addend);
- break;
-
- case elfcpp::R_PPC64_TOC16_LO:
- Reloc::addr16_lo(view, got_offset, addend);
+ case elfcpp::R_PPC_REL16_LO:
+ Reloc::rel16_lo(view, value, 0, address);
break;
- case elfcpp::R_PPC64_TOC16_HI:
- Reloc::addr16_hi(view, got_offset, addend);
+ case elfcpp::R_PPC_REL16_HI:
+ Reloc::rel16_hi(view, value, 0, address);
break;
- case elfcpp::R_PPC64_TOC16_HA:
- Reloc::addr16_ha(view, got_offset, addend);
+ case elfcpp::R_PPC_REL16_HA:
+ Reloc::rel16_ha(view, value, 0, address);
break;
+ case elfcpp::R_PPC64_ADDR16_DS:
+ case elfcpp::R_PPC64_ADDR16_LO_DS:
case elfcpp::R_PPC64_TOC16_DS:
case elfcpp::R_PPC64_TOC16_LO_DS:
- Reloc::addr16_ds(view, got_offset, addend);
- break;
-
- case elfcpp::R_PPC64_TOC:
- {
- elfcpp::Elf_types<64>::Elf_Addr value;
- value = target->toc_section()->address() + toc_base_offset;
- Relocate_functions<64, false>::rela64(view, value, addend);
- }
+ case elfcpp::R_PPC64_GOT16_DS:
+ case elfcpp::R_PPC64_GOT16_LO_DS:
+ case elfcpp::R_PPC64_SECTOFF_DS:
+ case elfcpp::R_PPC64_SECTOFF_LO_DS:
+ Reloc::addr16_ds(view, value, 0);
break;
case elfcpp::R_POWERPC_COPY:
(gsym == NULL
? !parameters->options().output_is_position_independent()
: gsym->final_value_is_known());
- const tls::Tls_optimization optimized_type
- = optimize_tls_reloc(is_final, r_type);
switch (r_type)
{
reloc_symbol_changes);
}
-// Return the size of a relocation while scanning during a relocatable
-// link.
-
-template<int size, bool big_endian>
-unsigned int
-Target_powerpc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
- unsigned int,
- Relobj*)
+class Powerpc_scan_relocatable_reloc
{
- // We are always SHT_RELA, so we should never get here.
- gold_unreachable();
- return 0;
-}
+public:
+ // Return the strategy to use for a local symbol which is not a
+ // section symbol, given the relocation type.
+ inline Relocatable_relocs::Reloc_strategy
+ local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym)
+ {
+ if (r_type == 0 && r_sym == 0)
+ return Relocatable_relocs::RELOC_DISCARD;
+ return Relocatable_relocs::RELOC_COPY;
+ }
+
+ // Return the strategy to use for a local symbol which is a section
+ // symbol, given the relocation type.
+ inline Relocatable_relocs::Reloc_strategy
+ local_section_strategy(unsigned int, Relobj*)
+ {
+ return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA;
+ }
+
+ // Return the strategy to use for a global symbol, given the
+ // relocation type, the object, and the symbol index.
+ inline Relocatable_relocs::Reloc_strategy
+ global_strategy(unsigned int r_type, Relobj*, unsigned int)
+ {
+ if (r_type == elfcpp::R_PPC_PLTREL24)
+ return Relocatable_relocs::RELOC_SPECIAL;
+ return Relocatable_relocs::RELOC_COPY;
+ }
+};
// Scan the relocs during a relocatable link.
{
gold_assert(sh_type == elfcpp::SHT_RELA);
- typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA,
- Relocatable_size_for_reloc> Scan_relocatable_relocs;
-
gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA,
- Scan_relocatable_relocs>(
+ Powerpc_scan_relocatable_reloc>(
symtab,
layout,
object,
Output_section* output_section,
off_t offset_in_output_section,
const Relocatable_relocs* rr,
- unsigned char* view,
- typename elfcpp::Elf_types<size>::Elf_Addr view_address,
- section_size_type view_size,
+ unsigned char*,
+ typename elfcpp::Elf_types<size>::Elf_Addr,
+ section_size_type,
unsigned char* reloc_view,
section_size_type reloc_view_size)
{
gold_assert(sh_type == elfcpp::SHT_RELA);
- gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_RELA>(
- relinfo,
- prelocs,
- reloc_count,
- output_section,
- offset_in_output_section,
- rr,
- view,
- view_address,
- view_size,
- reloc_view,
- reloc_view_size);
+ typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
+ typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc
+ Reltype;
+ typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc_write
+ Reltype_write;
+ const int reloc_size
+ = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size;
+ const Address invalid_address = static_cast<Address>(0) - 1;
+
+ Powerpc_relobj<size, big_endian>* const object
+ = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object);
+ const unsigned int local_count = object->local_symbol_count();
+ unsigned int got2_shndx = object->got2_shndx();
+ typename elfcpp::Elf_types<size>::Elf_Swxword got2_addend = 0;
+ if (got2_shndx != 0)
+ got2_addend = object->get_output_section_offset(got2_shndx);
+
+ unsigned char* pwrite = reloc_view;
+
+ for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size)
+ {
+ Relocatable_relocs::Reloc_strategy strategy = rr->strategy(i);
+ if (strategy == Relocatable_relocs::RELOC_DISCARD)
+ continue;
+
+ Reltype reloc(prelocs);
+ Reltype_write reloc_write(pwrite);
+
+ typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info();
+ const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
+ const unsigned int r_type = elfcpp::elf_r_type<size>(r_info);
+
+ // Get the new symbol index.
+
+ unsigned int new_symndx;
+ if (r_sym < local_count)
+ {
+ switch (strategy)
+ {
+ case Relocatable_relocs::RELOC_COPY:
+ case Relocatable_relocs::RELOC_SPECIAL:
+ new_symndx = object->symtab_index(r_sym);
+ gold_assert(new_symndx != -1U);
+ break;
+
+ case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA:
+ {
+ // We are adjusting a section symbol. We need to find
+ // the symbol table index of the section symbol for
+ // the output section corresponding to input section
+ // in which this symbol is defined.
+ gold_assert(r_sym < local_count);
+ bool is_ordinary;
+ unsigned int shndx =
+ object->local_symbol_input_shndx(r_sym, &is_ordinary);
+ gold_assert(is_ordinary);
+ Output_section* os = object->output_section(shndx);
+ gold_assert(os != NULL);
+ gold_assert(os->needs_symtab_index());
+ new_symndx = os->symtab_index();
+ }
+ break;
+
+ default:
+ gold_unreachable();
+ }
+ }
+ else
+ {
+ const Symbol* gsym = object->global_symbol(r_sym);
+ gold_assert(gsym != NULL);
+ if (gsym->is_forwarder())
+ gsym = relinfo->symtab->resolve_forwards(gsym);
+
+ gold_assert(gsym->has_symtab_index());
+ new_symndx = gsym->symtab_index();
+ }
+
+ // Get the new offset--the location in the output section where
+ // this relocation should be applied.
+
+ Address offset = reloc.get_r_offset();
+ Address new_offset;
+ if (static_cast<Address>(offset_in_output_section) != invalid_address)
+ new_offset = offset + offset_in_output_section;
+ else
+ {
+ section_offset_type sot_offset =
+ convert_types<section_offset_type, Address>(offset);
+ section_offset_type new_sot_offset =
+ output_section->output_offset(object, relinfo->data_shndx,
+ sot_offset);
+ gold_assert(new_sot_offset != -1);
+ new_offset = new_sot_offset;
+ }
+
+ reloc_write.put_r_offset(new_offset);
+ reloc_write.put_r_info(elfcpp::elf_r_info<size>(new_symndx, r_type));
+
+ // Handle the reloc addend based on the strategy.
+ typename elfcpp::Elf_types<size>::Elf_Swxword addend;
+ addend = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::
+ get_reloc_addend(&reloc);
+
+ if (strategy == Relocatable_relocs::RELOC_COPY)
+ ;
+ else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA)
+ {
+ const Symbol_value<size>* psymval = object->local_symbol(r_sym);
+
+ addend = psymval->value(object, addend);
+ }
+ else if (strategy == Relocatable_relocs::RELOC_SPECIAL)
+ {
+ if (addend >= 32768)
+ addend += got2_addend;
+ }
+ else
+ gold_unreachable();
+
+ Reloc_types<elfcpp::SHT_RELA, size, big_endian>::
+ set_reloc_addend(&reloc_write, addend);
+
+ pwrite += reloc_size;
+ }
+
+ gold_assert(static_cast<section_size_type>(pwrite - reloc_view)
+ == reloc_view_size);
}
// Return the value to use for a dynamic which requires special
uint64_t
Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
{
- gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
- return this->plt_section()->address() + gsym->plt_offset();
+ if (size == 32)
+ {
+ gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
+ return this->plt_section()->address() + gsym->plt_offset();
+ }
+ else
+ gold_unreachable();
}
// The selector for powerpc object files.
projects / binutils-gdb.git / commitdiff