| // powerpc.cc -- powerpc target support for gold. | |
| // Copyright 2008, 2009, 2010 Free Software Foundation, Inc. | |
| // Written by David S. Miller <davem@davemloft.net> | |
| // and David Edelsohn <edelsohn@gnu.org> | |
| // This file is part of gold. | |
| // This program is free software; you can redistribute it and/or modify | |
| // it under the terms of the GNU General Public License as published by | |
| // the Free Software Foundation; either version 3 of the License, or | |
| // (at your option) any later version. | |
| // This program is distributed in the hope that it will be useful, | |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| // GNU General Public License for more details. | |
| // You should have received a copy of the GNU General Public License | |
| // along with this program; if not, write to the Free Software | |
| // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
| // MA 02110-1301, USA. | |
| #include "gold.h" | |
| #include "elfcpp.h" | |
| #include "parameters.h" | |
| #include "reloc.h" | |
| #include "powerpc.h" | |
| #include "object.h" | |
| #include "symtab.h" | |
| #include "layout.h" | |
| #include "output.h" | |
| #include "copy-relocs.h" | |
| #include "target.h" | |
| #include "target-reloc.h" | |
| #include "target-select.h" | |
| #include "tls.h" | |
| #include "errors.h" | |
| #include "gc.h" | |
| namespace | |
| { | |
| using namespace gold; | |
| template<int size, bool big_endian> | |
| class Output_data_plt_powerpc; | |
| template<int size, bool big_endian> | |
| class Target_powerpc : public Sized_target<size, big_endian> | |
| { | |
| public: | |
| typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
| Target_powerpc() | |
| : Sized_target<size, big_endian>(&powerpc_info), | |
| got_(NULL), got2_(NULL), toc_(NULL), | |
| plt_(NULL), rela_dyn_(NULL), | |
| copy_relocs_(elfcpp::R_POWERPC_COPY), | |
| dynbss_(NULL), got_mod_index_offset_(-1U) | |
| { | |
| } | |
| // Process the relocations to determine unreferenced sections for | |
| // garbage collection. | |
| void | |
| gc_process_relocs(Symbol_table* symtab, | |
| Layout* layout, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| unsigned int sh_type, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| Output_section* output_section, | |
| bool needs_special_offset_handling, | |
| size_t local_symbol_count, | |
| const unsigned char* plocal_symbols); | |
| // Scan the relocations to look for symbol adjustments. | |
| void | |
| scan_relocs(Symbol_table* symtab, | |
| Layout* layout, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| unsigned int sh_type, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| Output_section* output_section, | |
| bool needs_special_offset_handling, | |
| size_t local_symbol_count, | |
| const unsigned char* plocal_symbols); | |
| // Finalize the sections. | |
| void | |
| do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); | |
| // Return the value to use for a dynamic which requires special | |
| // treatment. | |
| uint64_t | |
| do_dynsym_value(const Symbol*) const; | |
| // Relocate a section. | |
| void | |
| relocate_section(const Relocate_info<size, big_endian>*, | |
| unsigned int sh_type, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| Output_section* output_section, | |
| bool needs_special_offset_handling, | |
| unsigned char* view, | |
| typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
| section_size_type view_size, | |
| const Reloc_symbol_changes*); | |
| // Scan the relocs during a relocatable link. | |
| void | |
| scan_relocatable_relocs(Symbol_table* symtab, | |
| Layout* layout, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| unsigned int sh_type, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| Output_section* output_section, | |
| bool needs_special_offset_handling, | |
| size_t local_symbol_count, | |
| const unsigned char* plocal_symbols, | |
| Relocatable_relocs*); | |
| // Relocate a section during a relocatable link. | |
| void | |
| relocate_for_relocatable(const Relocate_info<size, big_endian>*, | |
| unsigned int sh_type, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| 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* reloc_view, | |
| section_size_type reloc_view_size); | |
| // Return whether SYM is defined by the ABI. | |
| bool | |
| do_is_defined_by_abi(const Symbol* sym) const | |
| { | |
| return strcmp(sym->name(), "___tls_get_addr") == 0; | |
| } | |
| // Return the size of the GOT section. | |
| section_size_type | |
| got_size() const | |
| { | |
| gold_assert(this->got_ != NULL); | |
| return this->got_->data_size(); | |
| } | |
| // Return the number of entries in the GOT. | |
| unsigned int | |
| got_entry_count() const | |
| { | |
| if (this->got_ == NULL) | |
| return 0; | |
| return this->got_size() / (size / 8); | |
| } | |
| // Return the number of entries in the PLT. | |
| unsigned int | |
| plt_entry_count() const; | |
| // Return the offset of the first non-reserved PLT entry. | |
| unsigned int | |
| first_plt_entry_offset() const; | |
| // Return the size of each PLT entry. | |
| unsigned int | |
| plt_entry_size() const; | |
| private: | |
| // The class which scans relocations. | |
| class Scan | |
| { | |
| public: | |
| Scan() | |
| : issued_non_pic_error_(false) | |
| { } | |
| inline void | |
| local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| Output_section* output_section, | |
| const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
| const elfcpp::Sym<size, big_endian>& lsym); | |
| inline void | |
| global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| Output_section* output_section, | |
| const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
| Symbol* gsym); | |
| inline bool | |
| local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
| Target_powerpc* , | |
| Sized_relobj<size, big_endian>* , | |
| unsigned int , | |
| Output_section* , | |
| const elfcpp::Rela<size, big_endian>& , | |
| unsigned int , | |
| const elfcpp::Sym<size, big_endian>&) | |
| { return false; } | |
| inline bool | |
| global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
| Target_powerpc* , | |
| Sized_relobj<size, big_endian>* , | |
| unsigned int , | |
| Output_section* , | |
| const elfcpp::Rela<size, | |
| big_endian>& , | |
| unsigned int , Symbol*) | |
| { return false; } | |
| private: | |
| static void | |
| unsupported_reloc_local(Sized_relobj<size, big_endian>*, | |
| unsigned int r_type); | |
| static void | |
| unsupported_reloc_global(Sized_relobj<size, big_endian>*, | |
| unsigned int r_type, Symbol*); | |
| static void | |
| generate_tls_call(Symbol_table* symtab, Layout* layout, | |
| Target_powerpc* target); | |
| void | |
| check_non_pic(Relobj*, unsigned int r_type); | |
| // Whether we have issued an error about a non-PIC compilation. | |
| bool issued_non_pic_error_; | |
| }; | |
| // The class which implements relocation. | |
| class Relocate | |
| { | |
| public: | |
| // Do a relocation. Return false if the caller should not issue | |
| // any warnings about this relocation. | |
| inline bool | |
| relocate(const Relocate_info<size, big_endian>*, Target_powerpc*, | |
| Output_section*, size_t relnum, | |
| const elfcpp::Rela<size, big_endian>&, | |
| unsigned int r_type, const Sized_symbol<size>*, | |
| const Symbol_value<size>*, | |
| unsigned char*, | |
| typename elfcpp::Elf_types<size>::Elf_Addr, | |
| section_size_type); | |
| private: | |
| // Do a TLS relocation. | |
| inline void | |
| relocate_tls(const Relocate_info<size, big_endian>*, | |
| Target_powerpc* target, | |
| size_t relnum, const elfcpp::Rela<size, big_endian>&, | |
| unsigned int r_type, const Sized_symbol<size>*, | |
| const Symbol_value<size>*, | |
| unsigned char*, | |
| typename elfcpp::Elf_types<size>::Elf_Addr, | |
| section_size_type); | |
| }; | |
| // A class which returns the size required for a relocation type, | |
| // used while scanning relocs during a relocatable link. | |
| class Relocatable_size_for_reloc | |
| { | |
| public: | |
| unsigned int | |
| get_size_for_reloc(unsigned int, Relobj*); | |
| }; | |
| // Get the GOT section, creating it if necessary. | |
| Output_data_got<size, big_endian>* | |
| got_section(Symbol_table*, Layout*); | |
| Output_data_space* | |
| got2_section() const | |
| { | |
| gold_assert(this->got2_ != NULL); | |
| return this->got2_; | |
| } | |
| // Get the TOC section. | |
| Output_data_space* | |
| toc_section() const | |
| { | |
| gold_assert(this->toc_ != NULL); | |
| return this->toc_; | |
| } | |
| // Create a PLT entry for a global symbol. | |
| void | |
| make_plt_entry(Symbol_table*, Layout*, Symbol*); | |
| // Create a GOT entry for the TLS module index. | |
| unsigned int | |
| got_mod_index_entry(Symbol_table* symtab, Layout* layout, | |
| Sized_relobj<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*); | |
| // Copy a relocation against a global symbol. | |
| void | |
| copy_reloc(Symbol_table* symtab, Layout* layout, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int shndx, Output_section* output_section, | |
| Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
| { | |
| this->copy_relocs_.copy_reloc(symtab, layout, | |
| symtab->get_sized_symbol<size>(sym), | |
| object, shndx, output_section, | |
| reloc, this->rela_dyn_section(layout)); | |
| } | |
| // Information about this specific target which we pass to the | |
| // general Target structure. | |
| static Target::Target_info powerpc_info; | |
| // The types of GOT entries needed for this platform. | |
| // These values are exposed to the ABI in an incremental link. | |
| // Do not renumber existing values without changing the version | |
| // number of the .gnu_incremental_inputs section. | |
| enum Got_type | |
| { | |
| GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol | |
| GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset | |
| 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. | |
| Output_data_plt_powerpc<size, big_endian>* plt_; | |
| // The dynamic reloc section. | |
| Reloc_section* rela_dyn_; | |
| // Relocs saved to avoid a COPY reloc. | |
| Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; | |
| // Space for variables copied with a COPY reloc. | |
| Output_data_space* dynbss_; | |
| // Offset of the GOT entry for the TLS module index; | |
| unsigned int got_mod_index_offset_; | |
| }; | |
| template<> | |
| Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
| { | |
| 32, // size | |
| true, // is_big_endian | |
| elfcpp::EM_PPC, // machine_code | |
| false, // has_make_symbol | |
| false, // has_resolve | |
| false, // has_code_fill | |
| true, // is_default_stack_executable | |
| '\0', // wrap_char | |
| "/usr/lib/ld.so.1", // dynamic_linker | |
| 0x10000000, // default_text_segment_address | |
| 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
| 4 * 1024, // common_pagesize (overridable by -z common-page-size) | |
| elfcpp::SHN_UNDEF, // small_common_shndx | |
| elfcpp::SHN_UNDEF, // large_common_shndx | |
| 0, // small_common_section_flags | |
| 0, // large_common_section_flags | |
| NULL, // attributes_section | |
| NULL // attributes_vendor | |
| }; | |
| template<> | |
| Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
| { | |
| 32, // size | |
| false, // is_big_endian | |
| elfcpp::EM_PPC, // machine_code | |
| false, // has_make_symbol | |
| false, // has_resolve | |
| false, // has_code_fill | |
| true, // is_default_stack_executable | |
| '\0', // wrap_char | |
| "/usr/lib/ld.so.1", // dynamic_linker | |
| 0x10000000, // default_text_segment_address | |
| 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
| 4 * 1024, // common_pagesize (overridable by -z common-page-size) | |
| elfcpp::SHN_UNDEF, // small_common_shndx | |
| elfcpp::SHN_UNDEF, // large_common_shndx | |
| 0, // small_common_section_flags | |
| 0, // large_common_section_flags | |
| NULL, // attributes_section | |
| NULL // attributes_vendor | |
| }; | |
| template<> | |
| Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
| { | |
| 64, // size | |
| true, // is_big_endian | |
| elfcpp::EM_PPC64, // machine_code | |
| false, // has_make_symbol | |
| false, // has_resolve | |
| false, // has_code_fill | |
| true, // is_default_stack_executable | |
| '\0', // wrap_char | |
| "/usr/lib/ld.so.1", // dynamic_linker | |
| 0x10000000, // default_text_segment_address | |
| 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
| 8 * 1024, // common_pagesize (overridable by -z common-page-size) | |
| elfcpp::SHN_UNDEF, // small_common_shndx | |
| elfcpp::SHN_UNDEF, // large_common_shndx | |
| 0, // small_common_section_flags | |
| 0, // large_common_section_flags | |
| NULL, // attributes_section | |
| NULL // attributes_vendor | |
| }; | |
| template<> | |
| Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
| { | |
| 64, // size | |
| false, // is_big_endian | |
| elfcpp::EM_PPC64, // machine_code | |
| false, // has_make_symbol | |
| false, // has_resolve | |
| false, // has_code_fill | |
| true, // is_default_stack_executable | |
| '\0', // wrap_char | |
| "/usr/lib/ld.so.1", // dynamic_linker | |
| 0x10000000, // default_text_segment_address | |
| 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
| 8 * 1024, // common_pagesize (overridable by -z common-page-size) | |
| elfcpp::SHN_UNDEF, // small_common_shndx | |
| elfcpp::SHN_UNDEF, // large_common_shndx | |
| 0, // small_common_section_flags | |
| 0, // large_common_section_flags | |
| NULL, // attributes_section | |
| NULL // attributes_vendor | |
| }; | |
| template<int size, bool big_endian> | |
| class Powerpc_relocate_functions | |
| { | |
| private: | |
| // Do a simple relocation 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, | |
| typename elfcpp::Swap<size, big_endian>::Valtype value, | |
| typename elfcpp::Swap<size, 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 = ((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<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); | |
| 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. | |
| template<int valsize> | |
| static inline void | |
| rela_ua(unsigned char* view, unsigned int right_shift, | |
| elfcpp::Elf_Xword dst_mask, | |
| const Sized_relobj<size, big_endian>* object, | |
| const Symbol_value<size>* psymval, | |
| 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<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; | |
| Valtype* wv = reinterpret_cast<Valtype*>(view); | |
| Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
| Valtype reloc = ((psymval->value(object, addend) - address) | |
| >> 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<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); | |
| } | |
| typedef Powerpc_relocate_functions<size, big_endian> This; | |
| typedef Relocate_functions<size, big_endian> This_reloc; | |
| public: | |
| // R_POWERPC_REL32: (Symbol + Addend - Address) | |
| static inline void | |
| rel32(unsigned char* view, | |
| const Sized_relobj<size, big_endian>* object, | |
| const Symbol_value<size>* psymval, | |
| typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
| typename elfcpp::Elf_types<size>::Elf_Addr address) | |
| { This_reloc::pcrela32(view, object, psymval, addend, address); } | |
| // R_POWERPC_REL24: (Symbol + Addend - Address) & 0x3fffffc | |
| static inline void | |
| rel24(unsigned char* view, | |
| const Sized_relobj<size, big_endian>* object, | |
| const Symbol_value<size>* psymval, | |
| 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); | |
| } | |
| // R_POWERPC_REL14: (Symbol + Addend - Address) & 0xfffc | |
| static inline void | |
| rel14(unsigned char* view, | |
| const Sized_relobj<size, big_endian>* object, | |
| const Symbol_value<size>* psymval, | |
| 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); | |
| } | |
| // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
| static inline void | |
| addr16(unsigned char* view, | |
| typename elfcpp::Elf_types<size>::Elf_Addr value, | |
| typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
| { This_reloc::rela16(view, value, addend); } | |
| static inline void | |
| addr16(unsigned char* view, | |
| const Sized_relobj<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 value, | |
| typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
| { | |
| This::template rela<16>(view, 0, 0xfffc, value, addend); | |
| } | |
| // R_POWERPC_ADDR16_LO: (Symbol + Addend) & 0xffff | |
| static inline void | |
| addr16_lo(unsigned char* view, | |
| typename elfcpp::Elf_types<size>::Elf_Addr value, | |
| 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<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, | |
| typename elfcpp::Elf_types<size>::Elf_Addr value, | |
| typename elfcpp::Elf_types<size>::Elf_Addr addend) | |
| { | |
| This::template rela<16>(view, 16, 0xffff, value, addend); | |
| } | |
| static inline void | |
| addr16_hi(unsigned char* view, | |
| const Sized_relobj<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. | |
| static inline void | |
| addr16_ha(unsigned char* view, | |
| 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<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); | |
| } | |
| // R_PPC_REL16: (Symbol + Addend - Address) & 0xffff | |
| static inline void | |
| rel16(unsigned char* view, | |
| const Sized_relobj<size, big_endian>* object, | |
| const Symbol_value<size>* psymval, | |
| typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
| typename elfcpp::Elf_types<size>::Elf_Addr address) | |
| { This_reloc::pcrela16(view, object, psymval, addend, address); } | |
| // R_PPC_REL16_LO: (Symbol + Addend - Address) & 0xffff | |
| static inline void | |
| rel16_lo(unsigned char* view, | |
| const Sized_relobj<size, big_endian>* object, | |
| const Symbol_value<size>* psymval, | |
| typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
| typename elfcpp::Elf_types<size>::Elf_Addr address) | |
| { This_reloc::pcrela16(view, object, psymval, addend, address); } | |
| // R_PPC_REL16_HI: ((Symbol + Addend - Address) >> 16) & 0xffff | |
| static inline void | |
| rel16_hi(unsigned char* view, | |
| const Sized_relobj<size, big_endian>* object, | |
| const Symbol_value<size>* psymval, | |
| 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); | |
| } | |
| // R_PPC_REL16_HA: Same as R_PPC_REL16_HI except that if the | |
| // final value of the low 16 bits of the | |
| // relocation is negative, add one. | |
| static inline void | |
| rel16_ha(unsigned char* view, | |
| const Sized_relobj<size, big_endian>* object, | |
| const Symbol_value<size>* psymval, | |
| typename elfcpp::Elf_types<size>::Elf_Addr addend, | |
| typename elfcpp::Elf_types<size>::Elf_Addr address) | |
| { | |
| typename elfcpp::Elf_types<size>::Elf_Addr reloc; | |
| reloc = (psymval->value(object, addend) - address); | |
| if (reloc & 0x8000) | |
| reloc += 0x10000; | |
| reloc >>= 16; | |
| elfcpp::Swap<16, big_endian>::writeval(view, reloc); | |
| } | |
| }; | |
| // Get the GOT section, creating it if necessary. | |
| template<int size, bool big_endian> | |
| Output_data_got<size, big_endian>* | |
| Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, | |
| Layout* layout) | |
| { | |
| if (this->got_ == NULL) | |
| { | |
| gold_assert(symtab != NULL && layout != NULL); | |
| this->got_ = new Output_data_got<size, big_endian>(); | |
| 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_; | |
| } | |
| // Get the dynamic reloc section, creating it if necessary. | |
| template<int size, bool big_endian> | |
| typename Target_powerpc<size, big_endian>::Reloc_section* | |
| Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
| { | |
| if (this->rela_dyn_ == NULL) | |
| { | |
| gold_assert(layout != NULL); | |
| this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
| layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
| elfcpp::SHF_ALLOC, this->rela_dyn_, | |
| ORDER_DYNAMIC_RELOCS, false); | |
| } | |
| return this->rela_dyn_; | |
| } | |
| // A class to handle the PLT data. | |
| template<int size, bool big_endian> | |
| class Output_data_plt_powerpc : public Output_section_data | |
| { | |
| public: | |
| typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
| size, big_endian> Reloc_section; | |
| Output_data_plt_powerpc(Layout*); | |
| // Add an entry to the PLT. | |
| void add_entry(Symbol* gsym); | |
| // Return the .rela.plt section data. | |
| const Reloc_section* rel_plt() const | |
| { | |
| return this->rel_; | |
| } | |
| // Return the number of PLT entries. | |
| unsigned int | |
| entry_count() const | |
| { return this->count_; } | |
| // Return the offset of the first non-reserved PLT entry. | |
| static unsigned int | |
| first_plt_entry_offset() | |
| { return 4 * base_plt_entry_size; } | |
| // Return the size of a PLT entry. | |
| static unsigned int | |
| get_plt_entry_size() | |
| { return base_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() | |
| { | |
| unsigned int full_count = this->count_ + 4; | |
| this->set_data_size(full_count * base_plt_entry_size); | |
| } | |
| // Write out the PLT data. | |
| void | |
| do_write(Output_file*); | |
| // The reloc section. | |
| Reloc_section* rel_; | |
| // The number of PLT entries. | |
| unsigned int count_; | |
| }; | |
| // Create the PLT section. The ordinary .got section is an argument, | |
| // since we need to refer to the start. | |
| 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) | |
| { | |
| this->rel_ = new Reloc_section(false); | |
| layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
| elfcpp::SHF_ALLOC, this->rel_, | |
| 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); | |
| } | |
| static const unsigned int addis_11_11 = 0x3d6b0000; | |
| static const unsigned int addis_11_30 = 0x3d7e0000; | |
| static const unsigned int addis_12_12 = 0x3d8c0000; | |
| static const unsigned int addi_11_11 = 0x396b0000; | |
| static const unsigned int add_0_11_11 = 0x7c0b5a14; | |
| static const unsigned int add_11_0_11 = 0x7d605a14; | |
| static const unsigned int b = 0x48000000; | |
| static const unsigned int bcl_20_31 = 0x429f0005; | |
| static const unsigned int bctr = 0x4e800420; | |
| 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 lwz_0_12 = 0x800c0000; | |
| static const unsigned int lwz_11_11 = 0x816b0000; | |
| static const unsigned int lwz_11_30 = 0x817e0000; | |
| static const unsigned int lwz_12_12 = 0x818c0000; | |
| static const unsigned int mflr_0 = 0x7c0802a6; | |
| static const unsigned int mflr_12 = 0x7d8802a6; | |
| static const unsigned int mtctr_0 = 0x7c0903a6; | |
| static const unsigned int mtctr_11 = 0x7d6903a6; | |
| 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) */ | |
| // Write out the PLT. | |
| template<int size, bool big_endian> | |
| void | |
| Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
| { | |
| 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; | |
| memset(pov, 0, base_plt_entry_size * 4); | |
| pov += base_plt_entry_size * 4; | |
| unsigned int plt_offset = base_plt_entry_size * 4; | |
| const unsigned int count = this->count_; | |
| if (size == 64) | |
| { | |
| for (unsigned int i = 0; i < count; i++) | |
| { | |
| } | |
| } | |
| else | |
| { | |
| for (unsigned int i = 0; i < count; i++) | |
| { | |
| 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; | |
| } | |
| } | |
| gold_assert(static_cast<section_size_type>(pov - oview) == oview_size); | |
| of->write_output_view(offset, oview_size, oview); | |
| } | |
| // 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) | |
| { | |
| if (gsym->has_plt_offset()) | |
| return; | |
| if (this->plt_ == NULL) | |
| { | |
| // Create the GOT section first. | |
| this->got_section(symtab, 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); | |
| 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); | |
| } | |
| this->plt_->add_entry(gsym); | |
| } | |
| // Return the number of entries in the PLT. | |
| template<int size, bool big_endian> | |
| unsigned int | |
| Target_powerpc<size, big_endian>::plt_entry_count() const | |
| { | |
| if (this->plt_ == NULL) | |
| return 0; | |
| return this->plt_->entry_count(); | |
| } | |
| // Return the offset of the first non-reserved PLT entry. | |
| template<int size, bool big_endian> | |
| unsigned int | |
| Target_powerpc<size, big_endian>::first_plt_entry_offset() const | |
| { | |
| return Output_data_plt_powerpc<size, big_endian>::first_plt_entry_offset(); | |
| } | |
| // Return the size of each PLT entry. | |
| template<int size, bool big_endian> | |
| unsigned int | |
| Target_powerpc<size, big_endian>::plt_entry_size() const | |
| { | |
| return Output_data_plt_powerpc<size, big_endian>::get_plt_entry_size(); | |
| } | |
| // Create a GOT entry for the TLS module index. | |
| template<int size, bool big_endian> | |
| unsigned int | |
| Target_powerpc<size, big_endian>::got_mod_index_entry(Symbol_table* symtab, | |
| Layout* layout, | |
| Sized_relobj<size, big_endian>* object) | |
| { | |
| if (this->got_mod_index_offset_ == -1U) | |
| { | |
| gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
| Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
| Output_data_got<size, big_endian>* got; | |
| unsigned int got_offset; | |
| got = this->got_section(symtab, layout); | |
| got_offset = got->add_constant(0); | |
| rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, | |
| got_offset, 0); | |
| got->add_constant(0); | |
| this->got_mod_index_offset_ = got_offset; | |
| } | |
| return this->got_mod_index_offset_; | |
| } | |
| // Optimize the TLS relocation type based on what we know about the | |
| // 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) | |
| { | |
| // 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(); | |
| } | |
| } | |
| // Report an unsupported relocation against a local symbol. | |
| template<int size, bool big_endian> | |
| void | |
| Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int r_type) | |
| { | |
| gold_error(_("%s: unsupported reloc %u against local symbol"), | |
| object->name().c_str(), r_type); | |
| } | |
| // We are about to emit a dynamic relocation of type R_TYPE. If the | |
| // dynamic linker does not support it, issue an error. | |
| template<int size, bool big_endian> | |
| void | |
| Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
| unsigned int r_type) | |
| { | |
| gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
| // These are the relocation types supported by glibc for both 32-bit | |
| // and 64-bit powerpc. | |
| switch (r_type) | |
| { | |
| case elfcpp::R_POWERPC_RELATIVE: | |
| case elfcpp::R_POWERPC_GLOB_DAT: | |
| case elfcpp::R_POWERPC_DTPMOD: | |
| case elfcpp::R_POWERPC_DTPREL: | |
| case elfcpp::R_POWERPC_TPREL: | |
| case elfcpp::R_POWERPC_JMP_SLOT: | |
| case elfcpp::R_POWERPC_COPY: | |
| case elfcpp::R_POWERPC_ADDR32: | |
| case elfcpp::R_POWERPC_ADDR24: | |
| case elfcpp::R_POWERPC_REL24: | |
| return; | |
| default: | |
| break; | |
| } | |
| if (size == 64) | |
| { | |
| switch (r_type) | |
| { | |
| // These are the relocation types supported only on 64-bit. | |
| case elfcpp::R_PPC64_ADDR64: | |
| case elfcpp::R_PPC64_TPREL16_LO_DS: | |
| case elfcpp::R_PPC64_TPREL16_DS: | |
| case elfcpp::R_POWERPC_TPREL16: | |
| case elfcpp::R_POWERPC_TPREL16_LO: | |
| case elfcpp::R_POWERPC_TPREL16_HI: | |
| case elfcpp::R_POWERPC_TPREL16_HA: | |
| case elfcpp::R_PPC64_TPREL16_HIGHER: | |
| case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
| case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
| case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
| case elfcpp::R_PPC64_ADDR16_LO_DS: | |
| case elfcpp::R_POWERPC_ADDR16_LO: | |
| case elfcpp::R_POWERPC_ADDR16_HI: | |
| case elfcpp::R_POWERPC_ADDR16_HA: | |
| case elfcpp::R_POWERPC_ADDR30: | |
| case elfcpp::R_PPC64_UADDR64: | |
| case elfcpp::R_POWERPC_UADDR32: | |
| case elfcpp::R_POWERPC_ADDR16: | |
| case elfcpp::R_POWERPC_UADDR16: | |
| case elfcpp::R_PPC64_ADDR16_DS: | |
| case elfcpp::R_PPC64_ADDR16_HIGHER: | |
| case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
| case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
| case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
| case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
| case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
| case elfcpp::R_POWERPC_REL32: | |
| case elfcpp::R_PPC64_REL64: | |
| return; | |
| default: | |
| break; | |
| } | |
| } | |
| else | |
| { | |
| switch (r_type) | |
| { | |
| // These are the relocation types supported only on 32-bit. | |
| default: | |
| break; | |
| } | |
| } | |
| // This prevents us from issuing more than one error per reloc | |
| // section. But we can still wind up issuing more than one | |
| // error per object file. | |
| if (this->issued_non_pic_error_) | |
| return; | |
| gold_assert(parameters->options().output_is_position_independent()); | |
| object->error(_("requires unsupported dynamic reloc; " | |
| "recompile with -fPIC")); | |
| this->issued_non_pic_error_ = true; | |
| return; | |
| } | |
| // Scan a relocation for a local symbol. | |
| template<int size, bool big_endian> | |
| inline void | |
| Target_powerpc<size, big_endian>::Scan::local( | |
| Symbol_table* symtab, | |
| Layout* layout, | |
| Target_powerpc<size, big_endian>* target, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| Output_section* output_section, | |
| const elfcpp::Rela<size, big_endian>& reloc, | |
| unsigned int r_type, | |
| const elfcpp::Sym<size, big_endian>& lsym) | |
| { | |
| switch (r_type) | |
| { | |
| case elfcpp::R_POWERPC_NONE: | |
| case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
| case elfcpp::R_POWERPC_GNU_VTENTRY: | |
| break; | |
| case elfcpp::R_PPC64_ADDR64: | |
| case elfcpp::R_POWERPC_ADDR32: | |
| case elfcpp::R_POWERPC_ADDR16_HA: | |
| case elfcpp::R_POWERPC_ADDR16_LO: | |
| // 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()) | |
| { | |
| Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
| check_non_pic(object, r_type); | |
| if (lsym.get_st_type() != elfcpp::STT_SECTION) | |
| { | |
| unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
| rela_dyn->add_local(object, r_sym, r_type, output_section, | |
| data_shndx, reloc.get_r_offset(), | |
| reloc.get_r_addend()); | |
| } | |
| else | |
| { | |
| unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
| gold_assert(lsym.get_st_value() == 0); | |
| rela_dyn->add_local_relative(object, r_sym, r_type, | |
| output_section, data_shndx, | |
| reloc.get_r_offset(), | |
| reloc.get_r_addend()); | |
| } | |
| } | |
| break; | |
| case elfcpp::R_POWERPC_REL24: | |
| case elfcpp::R_PPC_LOCAL24PC: | |
| case elfcpp::R_POWERPC_REL32: | |
| case elfcpp::R_PPC_REL16_LO: | |
| 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; | |
| unsigned int r_sym; | |
| got = target->got_section(symtab, layout); | |
| r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
| // If we are generating a shared object, we need to add a | |
| // dynamic relocation for this symbol's GOT entry. | |
| if (parameters->options().output_is_position_independent()) | |
| { | |
| if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
| { | |
| Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
| unsigned int off; | |
| off = got->add_constant(0); | |
| object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
| rela_dyn->add_local_relative(object, r_sym, | |
| elfcpp::R_POWERPC_RELATIVE, | |
| got, off, 0); | |
| } | |
| } | |
| else | |
| got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
| } | |
| break; | |
| case elfcpp::R_PPC64_TOC: | |
| // We need a GOT section. | |
| target->got_section(symtab, layout); | |
| break; | |
| // These are relocations which should only be seen by the | |
| // dynamic linker, and should never be seen here. | |
| case elfcpp::R_POWERPC_COPY: | |
| case elfcpp::R_POWERPC_GLOB_DAT: | |
| case elfcpp::R_POWERPC_JMP_SLOT: | |
| case elfcpp::R_POWERPC_RELATIVE: | |
| case elfcpp::R_POWERPC_DTPMOD: | |
| gold_error(_("%s: unexpected reloc %u in object file"), | |
| object->name().c_str(), r_type); | |
| break; | |
| default: | |
| unsupported_reloc_local(object, r_type); | |
| break; | |
| } | |
| } | |
| // Report an unsupported relocation against a global symbol. | |
| template<int size, bool big_endian> | |
| void | |
| Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int r_type, | |
| Symbol* gsym) | |
| { | |
| gold_error(_("%s: unsupported reloc %u against global symbol %s"), | |
| object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
| } | |
| // Scan a relocation for a global symbol. | |
| template<int size, bool big_endian> | |
| inline void | |
| Target_powerpc<size, big_endian>::Scan::global( | |
| Symbol_table* symtab, | |
| Layout* layout, | |
| Target_powerpc<size, big_endian>* target, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| Output_section* output_section, | |
| const elfcpp::Rela<size, big_endian>& reloc, | |
| unsigned int r_type, | |
| Symbol* gsym) | |
| { | |
| switch (r_type) | |
| { | |
| 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); | |
| break; | |
| case elfcpp::R_POWERPC_ADDR16: | |
| case elfcpp::R_POWERPC_ADDR16_LO: | |
| case elfcpp::R_POWERPC_ADDR16_HI: | |
| case elfcpp::R_POWERPC_ADDR16_HA: | |
| 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); | |
| // 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()) | |
| gsym->set_needs_dynsym_value(); | |
| } | |
| // Make a dynamic relocation if necessary. | |
| if (gsym->needs_dynamic_reloc(Symbol::ABSOLUTE_REF)) | |
| { | |
| 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)) | |
| { | |
| Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
| rela_dyn->add_global_relative(gsym, elfcpp::R_POWERPC_RELATIVE, | |
| output_section, object, | |
| data_shndx, reloc.get_r_offset(), | |
| reloc.get_r_addend()); | |
| } | |
| else | |
| { | |
| Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
| check_non_pic(object, r_type); | |
| if (gsym->is_from_dynobj() | |
| || gsym->is_undefined() | |
| || gsym->is_preemptible()) | |
| rela_dyn->add_global(gsym, r_type, output_section, | |
| object, data_shndx, | |
| reloc.get_r_offset(), | |
| reloc.get_r_addend()); | |
| else | |
| rela_dyn->add_global_relative(gsym, r_type, | |
| output_section, object, | |
| data_shndx, | |
| reloc.get_r_offset(), | |
| reloc.get_r_addend()); | |
| } | |
| } | |
| } | |
| break; | |
| 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); | |
| // Make a dynamic relocation if necessary. | |
| int flags = Symbol::NON_PIC_REF; | |
| if (gsym->type() == elfcpp::STT_FUNC) | |
| flags |= Symbol::FUNCTION_CALL; | |
| if (gsym->needs_dynamic_reloc(flags)) | |
| { | |
| if (gsym->may_need_copy_reloc()) | |
| { | |
| target->copy_reloc(symtab, layout, object, | |
| data_shndx, output_section, gsym, | |
| reloc); | |
| } | |
| else | |
| { | |
| Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
| check_non_pic(object, r_type); | |
| rela_dyn->add_global(gsym, r_type, output_section, object, | |
| data_shndx, reloc.get_r_offset(), | |
| reloc.get_r_addend()); | |
| } | |
| } | |
| } | |
| 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; | |
| got = target->got_section(symtab, layout); | |
| if (gsym->final_value_is_known()) | |
| got->add_global(gsym, GOT_TYPE_STANDARD); | |
| else | |
| { | |
| // If this symbol is not fully resolved, we need to add a | |
| // dynamic relocation for it. | |
| Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
| if (gsym->is_from_dynobj() | |
| || gsym->is_undefined() | |
| || gsym->is_preemptible()) | |
| got->add_global_with_rela(gsym, GOT_TYPE_STANDARD, rela_dyn, | |
| elfcpp::R_POWERPC_GLOB_DAT); | |
| else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
| { | |
| unsigned int off = got->add_constant(0); | |
| gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
| rela_dyn->add_global_relative(gsym, elfcpp::R_POWERPC_RELATIVE, | |
| got, off, 0); | |
| } | |
| } | |
| } | |
| break; | |
| case elfcpp::R_PPC64_TOC: | |
| // We need a GOT section. | |
| target->got_section(symtab, layout); | |
| break; | |
| case elfcpp::R_POWERPC_GOT_TPREL16: | |
| case elfcpp::R_POWERPC_TLS: | |
| // XXX TLS | |
| break; | |
| // These are relocations which should only be seen by the | |
| // dynamic linker, and should never be seen here. | |
| case elfcpp::R_POWERPC_COPY: | |
| case elfcpp::R_POWERPC_GLOB_DAT: | |
| case elfcpp::R_POWERPC_JMP_SLOT: | |
| case elfcpp::R_POWERPC_RELATIVE: | |
| case elfcpp::R_POWERPC_DTPMOD: | |
| gold_error(_("%s: unexpected reloc %u in object file"), | |
| object->name().c_str(), r_type); | |
| break; | |
| default: | |
| unsupported_reloc_global(object, r_type, gsym); | |
| break; | |
| } | |
| } | |
| // Process relocations for gc. | |
| template<int size, bool big_endian> | |
| void | |
| Target_powerpc<size, big_endian>::gc_process_relocs( | |
| Symbol_table* symtab, | |
| Layout* layout, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| unsigned int, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| Output_section* output_section, | |
| bool needs_special_offset_handling, | |
| size_t local_symbol_count, | |
| const unsigned char* plocal_symbols) | |
| { | |
| typedef Target_powerpc<size, big_endian> Powerpc; | |
| typedef typename Target_powerpc<size, big_endian>::Scan Scan; | |
| gold::gc_process_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan, | |
| typename Target_powerpc::Relocatable_size_for_reloc>( | |
| symtab, | |
| layout, | |
| this, | |
| object, | |
| data_shndx, | |
| prelocs, | |
| reloc_count, | |
| output_section, | |
| needs_special_offset_handling, | |
| local_symbol_count, | |
| plocal_symbols); | |
| } | |
| // Scan relocations for a section. | |
| template<int size, bool big_endian> | |
| void | |
| Target_powerpc<size, big_endian>::scan_relocs( | |
| Symbol_table* symtab, | |
| Layout* layout, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| unsigned int sh_type, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| Output_section* output_section, | |
| bool needs_special_offset_handling, | |
| size_t local_symbol_count, | |
| const unsigned char* plocal_symbols) | |
| { | |
| 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) | |
| { | |
| gold_error(_("%s: unsupported REL reloc section"), | |
| object->name().c_str()); | |
| 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); | |
| } | |
| gold::scan_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan>( | |
| symtab, | |
| layout, | |
| this, | |
| object, | |
| data_shndx, | |
| prelocs, | |
| reloc_count, | |
| output_section, | |
| needs_special_offset_handling, | |
| local_symbol_count, | |
| plocal_symbols); | |
| } | |
| // Finalize the sections. | |
| template<int size, bool big_endian> | |
| void | |
| Target_powerpc<size, big_endian>::do_finalize_sections( | |
| Layout* layout, | |
| const Input_objects*, | |
| Symbol_table*) | |
| { | |
| // 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); | |
| // Emit any relocs we saved in an attempt to avoid generating COPY | |
| // relocs. | |
| if (this->copy_relocs_.any_saved_relocs()) | |
| this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
| } | |
| // Perform a relocation. | |
| template<int size, bool big_endian> | |
| inline bool | |
| Target_powerpc<size, big_endian>::Relocate::relocate( | |
| const Relocate_info<size, big_endian>* relinfo, | |
| Target_powerpc* target, | |
| Output_section*, | |
| size_t relnum, | |
| const elfcpp::Rela<size, big_endian>& rela, | |
| unsigned int r_type, | |
| const Sized_symbol<size>* gsym, | |
| const Symbol_value<size>* psymval, | |
| unsigned char* view, | |
| typename elfcpp::Elf_types<size>::Elf_Addr address, | |
| section_size_type /* view_size */) | |
| { | |
| 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(r_type == elfcpp::R_POWERPC_REL24 | |
| || r_type == elfcpp::R_PPC_LOCAL24PC | |
| || r_type == elfcpp::R_PPC_REL16 | |
| || r_type == elfcpp::R_PPC_REL16_LO | |
| || r_type == elfcpp::R_PPC_REL16_HI | |
| || r_type == elfcpp::R_PPC_REL16_HA)) | |
| { | |
| elfcpp::Elf_Xword value; | |
| value = target->plt_section()->address() + gsym->plt_offset(); | |
| symval.set_output_value(value); | |
| psymval = &symval; | |
| } | |
| const Sized_relobj<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_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: | |
| // 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); | |
| } | |
| 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; | |
| } | |
| break; | |
| default: | |
| break; | |
| } | |
| switch (r_type) | |
| { | |
| case elfcpp::R_POWERPC_NONE: | |
| case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
| case elfcpp::R_POWERPC_GNU_VTENTRY: | |
| break; | |
| case elfcpp::R_POWERPC_REL32: | |
| Reloc::rel32(view, object, psymval, addend, 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); | |
| break; | |
| case elfcpp::R_PPC_LOCAL24PC: | |
| Reloc::rel24(view, object, psymval, addend, address); | |
| break; | |
| case elfcpp::R_PPC64_ADDR64: | |
| if (!parameters->options().output_is_position_independent()) | |
| Relocate_functions<size, big_endian>::rela64(view, object, | |
| psymval, addend); | |
| 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); | |
| break; | |
| case elfcpp::R_POWERPC_GOT16: | |
| Reloc::addr16(view, got_offset, addend); | |
| break; | |
| case elfcpp::R_POWERPC_GOT16_LO: | |
| Reloc::addr16_lo(view, got_offset, addend); | |
| break; | |
| case elfcpp::R_POWERPC_GOT16_HI: | |
| Reloc::addr16_hi(view, got_offset, addend); | |
| break; | |
| case elfcpp::R_POWERPC_GOT16_HA: | |
| Reloc::addr16_ha(view, got_offset, addend); | |
| 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); | |
| break; | |
| case elfcpp::R_PPC64_TOC16_HI: | |
| Reloc::addr16_hi(view, got_offset, addend); | |
| break; | |
| case elfcpp::R_PPC64_TOC16_HA: | |
| Reloc::addr16_ha(view, got_offset, addend); | |
| break; | |
| 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); | |
| } | |
| break; | |
| case elfcpp::R_POWERPC_COPY: | |
| case elfcpp::R_POWERPC_GLOB_DAT: | |
| case elfcpp::R_POWERPC_JMP_SLOT: | |
| case elfcpp::R_POWERPC_RELATIVE: | |
| // This is an outstanding tls reloc, which is unexpected when | |
| // linking. | |
| case elfcpp::R_POWERPC_DTPMOD: | |
| gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
| _("unexpected reloc %u in object file"), | |
| r_type); | |
| break; | |
| default: | |
| gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
| _("unsupported reloc %u"), | |
| r_type); | |
| break; | |
| } | |
| return true; | |
| } | |
| // Perform a TLS relocation. | |
| template<int size, bool big_endian> | |
| inline void | |
| Target_powerpc<size, big_endian>::Relocate::relocate_tls( | |
| const Relocate_info<size, big_endian>* relinfo, | |
| Target_powerpc<size, big_endian>* target, | |
| size_t relnum, | |
| const elfcpp::Rela<size, big_endian>& rela, | |
| unsigned int r_type, | |
| const Sized_symbol<size>* gsym, | |
| const Symbol_value<size>* psymval, | |
| unsigned char* view, | |
| typename elfcpp::Elf_types<size>::Elf_Addr address, | |
| section_size_type) | |
| { | |
| Output_segment* tls_segment = relinfo->layout->tls_segment(); | |
| typedef Powerpc_relocate_functions<size, big_endian> Reloc; | |
| const Sized_relobj<size, big_endian>* object = relinfo->object; | |
| const elfcpp::Elf_Xword addend = rela.get_r_addend(); | |
| typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0); | |
| const bool is_final = | |
| (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) | |
| { | |
| // XXX | |
| } | |
| } | |
| // Relocate section data. | |
| template<int size, bool big_endian> | |
| void | |
| Target_powerpc<size, big_endian>::relocate_section( | |
| const Relocate_info<size, big_endian>* relinfo, | |
| unsigned int sh_type, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| Output_section* output_section, | |
| bool needs_special_offset_handling, | |
| unsigned char* view, | |
| typename elfcpp::Elf_types<size>::Elf_Addr address, | |
| section_size_type view_size, | |
| const Reloc_symbol_changes* reloc_symbol_changes) | |
| { | |
| typedef Target_powerpc<size, big_endian> Powerpc; | |
| typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
| gold_assert(sh_type == elfcpp::SHT_RELA); | |
| gold::relocate_section<size, big_endian, Powerpc, elfcpp::SHT_RELA, | |
| Powerpc_relocate>( | |
| relinfo, | |
| this, | |
| prelocs, | |
| reloc_count, | |
| output_section, | |
| needs_special_offset_handling, | |
| view, | |
| address, | |
| view_size, | |
| 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*) | |
| { | |
| // We are always SHT_RELA, so we should never get here. | |
| gold_unreachable(); | |
| return 0; | |
| } | |
| // Scan the relocs during a relocatable link. | |
| template<int size, bool big_endian> | |
| void | |
| Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
| Symbol_table* symtab, | |
| Layout* layout, | |
| Sized_relobj<size, big_endian>* object, | |
| unsigned int data_shndx, | |
| unsigned int sh_type, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| Output_section* output_section, | |
| bool needs_special_offset_handling, | |
| size_t local_symbol_count, | |
| const unsigned char* plocal_symbols, | |
| Relocatable_relocs* rr) | |
| { | |
| 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>( | |
| symtab, | |
| layout, | |
| object, | |
| data_shndx, | |
| prelocs, | |
| reloc_count, | |
| output_section, | |
| needs_special_offset_handling, | |
| local_symbol_count, | |
| plocal_symbols, | |
| rr); | |
| } | |
| // Relocate a section during a relocatable link. | |
| template<int size, bool big_endian> | |
| void | |
| Target_powerpc<size, big_endian>::relocate_for_relocatable( | |
| const Relocate_info<size, big_endian>* relinfo, | |
| unsigned int sh_type, | |
| const unsigned char* prelocs, | |
| size_t reloc_count, | |
| 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* 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); | |
| } | |
| // Return the value to use for a dynamic which requires special | |
| // treatment. This is how we support equality comparisons of function | |
| // pointers across shared library boundaries, as described in the | |
| // processor specific ABI supplement. | |
| template<int size, bool big_endian> | |
| 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(); | |
| } | |
| // The selector for powerpc object files. | |
| template<int size, bool big_endian> | |
| class Target_selector_powerpc : public Target_selector | |
| { | |
| public: | |
| Target_selector_powerpc() | |
| : Target_selector(elfcpp::EM_NONE, size, big_endian, | |
| (size == 64 ? | |
| (big_endian ? "elf64-powerpc" : "elf64-powerpcle") : | |
| (big_endian ? "elf32-powerpc" : "elf32-powerpcle"))) | |
| { } | |
| Target* do_recognize(int machine, int, int) | |
| { | |
| switch (size) | |
| { | |
| case 64: | |
| if (machine != elfcpp::EM_PPC64) | |
| return NULL; | |
| break; | |
| case 32: | |
| if (machine != elfcpp::EM_PPC) | |
| return NULL; | |
| break; | |
| default: | |
| return NULL; | |
| } | |
| return this->instantiate_target(); | |
| } | |
| Target* do_instantiate_target() | |
| { return new Target_powerpc<size, big_endian>(); } | |
| }; | |
| Target_selector_powerpc<32, true> target_selector_ppc32; | |
| Target_selector_powerpc<32, false> target_selector_ppc32le; | |
| Target_selector_powerpc<64, true> target_selector_ppc64; | |
| Target_selector_powerpc<64, false> target_selector_ppc64le; | |
| } // End anonymous namespace. |