X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gold%2Fpowerpc.cc;h=ad35095ccd585412619ff62b72d05c318c1c639c;hb=1d29ab86cb5145cac5045c1a4113d8b8fbd4d9c6;hp=39bda353a4385bda4bfa60e874b01b68470806d9;hpb=bce5a025d2ed7eda2c5bbb85bd9b33333ca5d556;p=deliverable%2Fbinutils-gdb.git diff --git a/gold/powerpc.cc b/gold/powerpc.cc index 39bda353a4..ad35095ccd 100644 --- a/gold/powerpc.cc +++ b/gold/powerpc.cc @@ -1,6 +1,6 @@ // powerpc.cc -- powerpc target support for gold. -// Copyright (C) 2008-2018 Free Software Foundation, Inc. +// Copyright (C) 2008-2019 Free Software Foundation, Inc. // Written by David S. Miller // and David Edelsohn @@ -41,6 +41,7 @@ #include "tls.h" #include "errors.h" #include "gc.h" +#include "attributes.h" namespace { @@ -78,8 +79,11 @@ struct Stub_table_owner const Output_section::Input_section* owner; }; -inline bool -is_branch_reloc(unsigned int r_type); +template +inline bool is_branch_reloc(unsigned int); + +template +inline bool is_plt16_reloc(unsigned int); // Counter incremented on every Powerpc_relobj constructed. static uint32_t object_id = 0; @@ -98,13 +102,14 @@ public: uniq_(object_id++), special_(0), relatoc_(0), toc_(0), has_small_toc_reloc_(false), opd_valid_(false), e_flags_(ehdr.get_e_flags()), no_toc_opt_(), opd_ent_(), - access_from_map_(), has14_(), stub_table_index_(), st_other_() + access_from_map_(), has14_(), stub_table_index_(), st_other_(), + attributes_section_data_(NULL) { this->set_abiversion(0); } ~Powerpc_relobj() - { } + { delete this->attributes_section_data_; } // Read the symbols then set up st_other vector. void @@ -244,6 +249,12 @@ public: make_toc_relative(Target_powerpc* target, Address* value); + bool + make_got_relative(Target_powerpc* target, + const Symbol_value* psymval, + Address addend, + Address* value); + // Perform the Sized_relobj_file method, then set up opd info from // .opd relocs. void @@ -386,6 +397,19 @@ public: ppc64_local_entry_offset(unsigned int symndx) const { return elfcpp::ppc64_decode_local_entry(this->st_other_[symndx] >> 5); } + bool + ppc64_needs_toc(const Symbol* sym) const + { return sym->nonvis() > 1 << 3; } + + bool + ppc64_needs_toc(unsigned int symndx) const + { return this->st_other_[symndx] > 1 << 5; } + + // The contents of the .gnu.attributes section if there is one. + const Attributes_section_data* + attributes_section_data() const + { return this->attributes_section_data_; } + private: struct Opd_ent { @@ -456,6 +480,9 @@ private: // ELF st_other field for local symbols. std::vector st_other_; + + // Object attributes if there is a .gnu.attributes section. + Attributes_section_data* attributes_section_data_; }; template @@ -467,13 +494,14 @@ public: Powerpc_dynobj(const std::string& name, Input_file* input_file, off_t offset, const typename elfcpp::Ehdr& ehdr) : Sized_dynobj(name, input_file, offset, ehdr), - opd_shndx_(0), e_flags_(ehdr.get_e_flags()), opd_ent_() + opd_shndx_(0), e_flags_(ehdr.get_e_flags()), opd_ent_(), + attributes_section_data_(NULL) { this->set_abiversion(0); } ~Powerpc_dynobj() - { } + { delete this->attributes_section_data_; } // Call Sized_dynobj::do_read_symbols to read the symbols then // read .opd from a dynamic object, filling in opd_ent_ vector, @@ -532,6 +560,11 @@ public: void set_abiversion(int ver); + // The contents of the .gnu.attributes section if there is one. + const Attributes_section_data* + attributes_section_data() const + { return this->attributes_section_data_; } + private: // Used to specify extent of executable sections. struct Sec_info @@ -572,6 +605,9 @@ private: // corresponding to the address. Note that in dynamic objects, // offset is *not* relative to the section. std::vector opd_ent_; + + // Object attributes if there is a .gnu.attributes section. + Attributes_section_data* attributes_section_data_; }; // Powerpc_copy_relocs class. Needed to peek at dynamic relocs the @@ -607,16 +643,18 @@ class Target_powerpc : public Sized_target Target_powerpc() : Sized_target(&powerpc_info), - got_(NULL), plt_(NULL), iplt_(NULL), brlt_section_(NULL), + got_(NULL), plt_(NULL), iplt_(NULL), lplt_(NULL), brlt_section_(NULL), glink_(NULL), rela_dyn_(NULL), copy_relocs_(), tlsld_got_offset_(-1U), stub_tables_(), branch_lookup_table_(), branch_info_(), tocsave_loc_(), - plt_thread_safe_(false), plt_localentry0_(false), + powerxx_stubs_(false), plt_thread_safe_(false), plt_localentry0_(false), plt_localentry0_init_(false), has_localentry0_(false), has_tls_get_addr_opt_(false), relax_failed_(false), relax_fail_count_(0), stub_group_size_(0), savres_section_(0), - tls_get_addr_(NULL), tls_get_addr_opt_(NULL) + tls_get_addr_(NULL), tls_get_addr_opt_(NULL), + attributes_section_data_(NULL), + last_fp_(NULL), last_ld_(NULL), last_vec_(NULL), last_struct_(NULL) { } @@ -860,6 +898,40 @@ class Target_powerpc : public Sized_target return this->iplt_; } + // Get the LPLT section. + const Output_data_plt_powerpc* + lplt_section() const + { + return this->lplt_; + } + + // Return the plt offset and section for the given global sym. + Address + plt_off(const Symbol* gsym, + const Output_data_plt_powerpc** sec) const + { + if (gsym->type() == elfcpp::STT_GNU_IFUNC + && gsym->can_use_relative_reloc(false)) + *sec = this->iplt_section(); + else + *sec = this->plt_section(); + return gsym->plt_offset(); + } + + // Return the plt offset and section for the given local sym. + Address + plt_off(const Sized_relobj_file* relobj, + unsigned int local_sym_index, + const Output_data_plt_powerpc** sec) const + { + const Symbol_value* lsym = relobj->local_symbol(local_sym_index); + if (lsym->is_ifunc_symbol()) + *sec = this->iplt_section(); + else + *sec = this->lplt_section(); + return relobj->local_plt_offset(local_sym_index); + } + // Get the .glink section. const Output_data_glink* glink_section() const @@ -1006,6 +1078,16 @@ class Target_powerpc : public Sized_target sym->set_dynsym_index(-1U); } + bool + powerxx_stubs() const + { return this->powerxx_stubs_; } + + void + set_powerxx_stubs() + { + this->powerxx_stubs_ = true; + } + bool plt_thread_safe() const { return this->plt_thread_safe_; } @@ -1120,6 +1202,10 @@ class Target_powerpc : public Sized_target stk_linker() const { return this->abiversion() < 2 ? 32 : 8; } + // Merge object attributes from input object with those in the output. + void + merge_object_attributes(const char*, const Attributes_section_data*); + private: class Track_tls @@ -1176,11 +1262,20 @@ class Target_powerpc : public Sized_target maybe_skip_tls_get_addr_call(Target_powerpc* target, unsigned int r_type, const Symbol* gsym) { - bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 - || r_type == elfcpp::R_PPC_PLTREL24) - && gsym != NULL - && (gsym == target->tls_get_addr() - || gsym == target->tls_get_addr_opt())); + bool is_tls_call + = ((r_type == elfcpp::R_POWERPC_REL24 + || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) + || r_type == elfcpp::R_PPC_PLTREL24 + || is_plt16_reloc(r_type) + || r_type == elfcpp::R_PPC64_PLT_PCREL34 + || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC + || r_type == elfcpp::R_POWERPC_PLTSEQ + || r_type == elfcpp::R_POWERPC_PLTCALL + || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC + || r_type == elfcpp::R_PPC64_PLTCALL_NOTOC) + && gsym != NULL + && (gsym == target->tls_get_addr() + || gsym == target->tls_get_addr_opt())); Tls_get_addr last_tls = this->tls_get_addr_state_; this->tls_get_addr_state_ = NOT_EXPECTED; if (is_tls_call && last_tls != EXPECTED) @@ -1198,7 +1293,7 @@ class Target_powerpc : public Sized_target // On powerpc, the branch and link insn making a call to // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the - // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call. + // usual R_POWERPC_REL24 or R_PPC_PLTREL24 relocation on a call. // The marker relocation always comes first, and has the same // symbol as the reloc on the insn setting up the __tls_get_addr // argument. This ties the arg setup insn with the call insn, @@ -1264,7 +1359,7 @@ class Target_powerpc : public Sized_target } // For 32-bit and ELFv2, conservatively assume anything but calls to // function code might be taking the address of the function. - return !is_branch_reloc(r_type); + return !is_branch_reloc(r_type); } inline bool @@ -1285,7 +1380,7 @@ class Target_powerpc : public Sized_target if (ppcobj->abiversion() == 1) return false; } - return !is_branch_reloc(r_type); + return !is_branch_reloc(r_type); } static bool @@ -1351,7 +1446,7 @@ class Target_powerpc : public Sized_target { gold::Default_comdat_behavior default_behavior; Comdat_behavior ret = default_behavior.get(name); - if (ret == CB_WARNING) + if (ret == CB_ERROR) { if (size == 32 && (strcmp(name, ".fixup") == 0 @@ -1417,6 +1512,9 @@ class Target_powerpc : public Sized_target void make_iplt_section(Symbol_table*, Layout*); + void + make_lplt_section(Layout*); + void make_brlt_section(Layout*); @@ -1430,6 +1528,12 @@ class Target_powerpc : public Sized_target Sized_relobj_file*, unsigned int); + // Create a PLT entry for a local non-IFUNC symbol. + void + make_local_plt_entry(Layout*, + Sized_relobj_file*, + unsigned int); + // Create a GOT entry for local dynamic __tls_get_addr. unsigned int @@ -1562,6 +1666,8 @@ class Target_powerpc : public Sized_target // section is emitted and marked with __rela_iplt_start and // __rela_iplt_end symbols. Output_data_plt_powerpc* iplt_; + // A PLT style section for local, non-ifunc symbols + Output_data_plt_powerpc* lplt_; // Section holding long branch destinations. Output_data_brlt_powerpc* brlt_section_; // The .glink section. @@ -1581,6 +1687,7 @@ class Target_powerpc : public Sized_target Branches branch_info_; Tocsave_loc tocsave_loc_; + bool powerxx_stubs_; bool plt_thread_safe_; bool plt_localentry0_; bool plt_localentry0_init_; @@ -1597,6 +1704,15 @@ class Target_powerpc : public Sized_target Symbol* tls_get_addr_; // If optimizing __tls_get_addr calls, the "__tls_get_addr_opt" symbol. Symbol* tls_get_addr_opt_; + + // Attributes in output. + Attributes_section_data* attributes_section_data_; + + // Last input file to change various attribute tags + const char* last_fp_; + const char* last_ld_; + const char* last_vec_; + const char* last_struct_; }; template<> @@ -1715,10 +1831,12 @@ Target::Target_info Target_powerpc<64, false>::powerpc_info = elfcpp::SHT_PROGBITS, // unwind_section_type }; +template inline bool is_branch_reloc(unsigned int r_type) { return (r_type == elfcpp::R_POWERPC_REL24 + || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) || r_type == elfcpp::R_PPC_PLTREL24 || r_type == elfcpp::R_PPC_LOCAL24PC || r_type == elfcpp::R_POWERPC_REL14 @@ -1730,6 +1848,17 @@ is_branch_reloc(unsigned int r_type) || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); } +// Reloc resolves to plt entry. +template +inline bool +is_plt16_reloc(unsigned int r_type) +{ + return (r_type == elfcpp::R_POWERPC_PLT16_LO + || r_type == elfcpp::R_POWERPC_PLT16_HI + || r_type == elfcpp::R_POWERPC_PLT16_HA + || (size == 64 && r_type == elfcpp::R_PPC64_PLT16_LO_DS)); +} + // If INSN is an opcode that may be used with an @tls operand, return // the transformed insn for TLS optimisation, otherwise return 0. If // REG is non-zero only match an insn with RB or RA equal to REG. @@ -1867,11 +1996,15 @@ private: typedef typename elfcpp::Swap::Valtype Valtype; Valtype* wv = reinterpret_cast(view); Valtype val = elfcpp::Swap::readval(wv); - Valtype reloc = value >> right_shift; + if (overflow == CHECK_SIGNED) + value = static_cast(value) >> right_shift; + else + value = value >> right_shift; + Valtype reloc = value; val &= ~dst_mask; reloc &= dst_mask; elfcpp::Swap::writeval(wv, val | reloc); - return overflowed(value >> right_shift, overflow); + return overflowed(value, overflow); } // Do a simple RELA relocation, unaligned. @@ -1894,11 +2027,15 @@ private: typedef typename elfcpp::Swap_unaligned::Valtype Valtype; Valtype val = elfcpp::Swap::readval(view); - Valtype reloc = value >> right_shift; + if (overflow == CHECK_SIGNED) + value = static_cast(value) >> right_shift; + else + value = value >> right_shift; + Valtype reloc = value; val &= ~dst_mask; reloc &= dst_mask; elfcpp::Swap_unaligned::writeval(view, val | reloc); - return overflowed(value >> right_shift, overflow); + return overflowed(value, overflow); } public: @@ -2016,6 +2153,56 @@ public: elfcpp::Swap<32, big_endian>::writeval(wv, val); return overflowed<16>(value, overflow); } + + // R_PPC64_D34 + static inline Status + addr34(unsigned char *view, uint64_t value, Overflow_check overflow) + { + Status stat = This::template rela<32,18>(view, 16, 0x3ffff, + value, overflow); + This::rela<32,16>(view + 4, 0, 0xffff, value, CHECK_NONE); + return stat; + } + + // R_PPC64_D34_HI30 + static inline void + addr34_hi(unsigned char *view, uint64_t value) + { This::addr34(view, value >> 34, CHECK_NONE);} + + // R_PPC64_D34_HA30 + static inline void + addr34_ha(unsigned char *view, uint64_t value) + { This::addr34_hi(view, value + (1ULL << 33));} + + // R_PPC64_D28 + static inline Status + addr28(unsigned char *view, uint64_t value, Overflow_check overflow) + { + Status stat = This::template rela<32,12>(view, 16, 0xfff, + value, overflow); + This::rela<32,16>(view + 4, 0, 0xffff, value, CHECK_NONE); + return stat; + } + + // R_PPC64_ADDR16_HIGHER34 + static inline void + addr16_higher34(unsigned char* view, uint64_t value) + { This::addr16(view, value >> 34, CHECK_NONE); } + + // R_PPC64_ADDR16_HIGHERA34 + static inline void + addr16_highera34(unsigned char* view, uint64_t value) + { This::addr16_higher34(view, value + (1ULL << 33)); } + + // R_PPC64_ADDR16_HIGHEST34 + static inline void + addr16_highest34(unsigned char* view, uint64_t value) + { This::addr16(view, value >> 50, CHECK_NONE); } + + // R_PPC64_ADDR16_HIGHESTA34 + static inline void + addr16_highesta34(unsigned char* view, uint64_t value) + { This::addr16_highest34(view, value + (1ULL << 33)); } }; // Set ABI version for input and output. @@ -2214,6 +2401,25 @@ Powerpc_relobj::make_toc_relative( return true; } +template +bool +Powerpc_relobj::make_got_relative( + Target_powerpc* target, + const Symbol_value* psymval, + Address addend, + Address* value) +{ + Address addr = psymval->value(this, addend); + Address got_base = (target->got_section()->output_section()->address() + + this->toc_base_offset()); + addr -= got_base; + if (addr + 0x80008000 > 0xffffffff) + return false; + + *value = addr; + return true; +} + // Perform the Sized_relobj_file method, then set up opd info from // .opd relocs. @@ -2251,6 +2457,8 @@ void Powerpc_relobj::do_read_symbols(Read_symbols_data* sd) { this->base_read_symbols(sd); + if (this->input_file()->format() != Input_file::FORMAT_ELF) + return; if (size == 64) { const int shdr_size = elfcpp::Elf_sizes::shdr_size; @@ -2284,6 +2492,56 @@ Powerpc_relobj::do_read_symbols(Read_symbols_data* sd) } } } + + const size_t shdr_size = elfcpp::Elf_sizes::shdr_size; + const unsigned char* ps = sd->section_headers->data() + shdr_size; + bool merge_attributes = false; + for (unsigned int i = 1; i < this->shnum(); ++i, ps += shdr_size) + { + elfcpp::Shdr shdr(ps); + switch (shdr.get_sh_type()) + { + case elfcpp::SHT_GNU_ATTRIBUTES: + { + gold_assert(this->attributes_section_data_ == NULL); + section_offset_type section_offset = shdr.get_sh_offset(); + section_size_type section_size = + convert_to_section_size_type(shdr.get_sh_size()); + const unsigned char* view = + this->get_view(section_offset, section_size, true, false); + this->attributes_section_data_ = + new Attributes_section_data(view, section_size); + } + break; + + case elfcpp::SHT_SYMTAB: + { + // Sometimes an object has no contents except the section + // name string table and an empty symbol table with the + // undefined symbol. We don't want to merge + // processor-specific flags from such an object. + const typename elfcpp::Elf_types::Elf_WXword sym_size = + elfcpp::Elf_sizes::sym_size; + if (shdr.get_sh_size() > sym_size) + merge_attributes = true; + } + break; + + case elfcpp::SHT_STRTAB: + break; + + default: + merge_attributes = true; + break; + } + } + + if (!merge_attributes) + { + // Should rarely happen. + delete this->attributes_section_data_; + this->attributes_section_data_ = NULL; + } } template @@ -2315,9 +2573,26 @@ void Powerpc_dynobj::do_read_symbols(Read_symbols_data* sd) { this->base_read_symbols(sd); + const size_t shdr_size = elfcpp::Elf_sizes::shdr_size; + const unsigned char* ps = + sd->section_headers->data() + shdr_size * (this->shnum() - 1); + for (unsigned int i = this->shnum(); i > 0; --i, ps -= shdr_size) + { + elfcpp::Shdr shdr(ps); + if (shdr.get_sh_type() == elfcpp::SHT_GNU_ATTRIBUTES) + { + section_offset_type section_offset = shdr.get_sh_offset(); + section_size_type section_size = + convert_to_section_size_type(shdr.get_sh_size()); + const unsigned char* view = + this->get_view(section_offset, section_size, true, false); + this->attributes_section_data_ = + new Attributes_section_data(view, section_size); + break; + } + } if (size == 64) { - const int shdr_size = elfcpp::Elf_sizes::shdr_size; const unsigned char* const pshdrs = sd->section_headers->data(); const unsigned char* namesu = sd->section_names->data(); const char* names = reinterpret_cast(namesu); @@ -2435,6 +2710,35 @@ Powerpc_relobj::do_relocate_sections( } this->relocate_section_range(symtab, layout, pshdrs, of, pviews, start, this->shnum() - 1); + + if (!parameters->options().output_is_position_independent()) + { + Target_powerpc* target + = static_cast*>( + parameters->sized_target()); + if (target->lplt_section() && target->lplt_section()->data_size() != 0) + { + const section_size_type offset = target->lplt_section()->offset(); + const section_size_type oview_size + = convert_to_section_size_type(target->lplt_section()->data_size()); + unsigned char* const oview = of->get_output_view(offset, oview_size); + + bool modified = false; + unsigned int nsyms = this->local_symbol_count(); + for (unsigned int i = 0; i < nsyms; i++) + if (this->local_has_plt_offset(i)) + { + Address value = this->local_symbol_value(i, 0); + if (size == 64) + value += ppc64_local_entry_offset(i); + size_t off = this->local_plt_offset(i); + elfcpp::Swap::writeval(oview + off, value); + modified = true; + } + if (modified) + of->write_output_view(offset, oview_size, oview); + } + } } // Set up some symbols. @@ -3075,6 +3379,7 @@ Target_powerpc::group_sections(Layout* layout, } } +template static unsigned long max_branch_delta (unsigned int r_type) { @@ -3083,6 +3388,7 @@ max_branch_delta (unsigned int r_type) || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) return 1L << 15; if (r_type == elfcpp::R_POWERPC_REL24 + || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) || r_type == elfcpp::R_PPC_PLTREL24 || r_type == elfcpp::R_PPC_LOCAL24PC) return 1L << 25; @@ -3151,7 +3457,7 @@ Target_powerpc::Branch_info::make_stub( && gsym != NULL && target->abiversion() >= 2 && !parameters->options().output_is_position_independent() - && !is_branch_reloc(this->r_type_)) + && !is_branch_reloc(this->r_type_)) target->glink_section()->add_global_entry(gsym); else { @@ -3159,7 +3465,7 @@ Target_powerpc::Branch_info::make_stub( && !(size == 32 && gsym != NULL && !parameters->options().output_is_position_independent() - && !is_branch_reloc(this->r_type_))) + && !is_branch_reloc(this->r_type_))) stub_table = this->object_->stub_table(this->shndx_); if (stub_table == NULL) { @@ -3187,7 +3493,7 @@ Target_powerpc::Branch_info::make_stub( } else { - Address max_branch_offset = max_branch_delta(this->r_type_); + Address max_branch_offset = max_branch_delta(this->r_type_); if (max_branch_offset == 0) return true; Address from = this->object_->get_output_section_offset(this->shndx_); @@ -3255,7 +3561,12 @@ Target_powerpc::Branch_info::make_stub( return true; } Address delta = to - from; - if (delta + max_branch_offset >= 2 * max_branch_offset) + if (delta + max_branch_offset >= 2 * max_branch_offset + || (size == 64 + && this->r_type_ == elfcpp::R_PPC64_REL24_NOTOC + && (gsym != NULL + ? this->object_->ppc64_needs_toc(gsym) + : this->object_->ppc64_needs_toc(this->r_sym_)))) { if (stub_table == NULL) { @@ -3427,6 +3738,40 @@ Target_powerpc::do_relax(int pass, return true; } } + bool do_resize = false; + for (typename Stub_tables::iterator p = this->stub_tables_.begin(); + p != this->stub_tables_.end(); + ++p) + if ((*p)->need_resize()) + { + do_resize = true; + break; + } + if (do_resize) + { + this->branch_lookup_table_.clear(); + for (typename Stub_tables::iterator p = this->stub_tables_.begin(); + p != this->stub_tables_.end(); + ++p) + (*p)->set_resizing(true); + for (typename Branches::const_iterator b = this->branch_info_.begin(); + b != this->branch_info_.end(); + b++) + { + if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) + && !this->relax_failed_) + { + this->relax_failed_ = true; + this->relax_fail_count_++; + if (this->relax_fail_count_ < 3) + return true; + } + } + for (typename Stub_tables::iterator p = this->stub_tables_.begin(); + p != this->stub_tables_.end(); + ++p) + (*p)->set_resizing(false); + } // Did anything change size? unsigned int num_huge_branches = this->branch_lookup_table_.size(); @@ -3633,6 +3978,9 @@ class Output_data_plt_powerpc : public Output_section_data_build void add_ifunc_entry(Symbol*); + void + add_local_entry(Sized_relobj_file*, unsigned int); + void add_local_ifunc_entry(Sized_relobj_file*, unsigned int); @@ -3670,8 +4018,8 @@ class Output_data_plt_powerpc : public Output_section_data_build unsigned int first_plt_entry_offset() const { - // IPLT has no reserved entry. - if (this->name_[3] == 'I') + // IPLT and LPLT have no reserved entry. + if (this->name_[3] == 'I' || this->name_[3] == 'L') return 0; return this->targ_->first_plt_entry_offset(); } @@ -3734,6 +4082,31 @@ Output_data_plt_powerpc::add_ifunc_entry(Symbol* gsym) } } +// Add an entry for a local symbol to the PLT. + +template +void +Output_data_plt_powerpc::add_local_entry( + Sized_relobj_file* relobj, + unsigned int local_sym_index) +{ + if (!relobj->local_has_plt_offset(local_sym_index)) + { + section_size_type off = this->current_data_size(); + relobj->set_local_plt_offset(local_sym_index, off); + if (this->rel_) + { + unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE; + if (size == 64 && this->targ_->abiversion() < 2) + dynrel = elfcpp::R_POWERPC_JMP_SLOT; + this->rel_->add_symbolless_local_addend(relobj, local_sym_index, + dynrel, this, off, 0); + } + off += this->plt_entry_size(); + this->set_current_data_size(off); + } +} + // Add an entry for a local ifunc symbol to the IPLT. template @@ -3766,11 +4139,13 @@ static const uint32_t add_3_12_13 = 0x7c6c6a14; static const uint32_t add_11_0_11 = 0x7d605a14; static const uint32_t add_11_2_11 = 0x7d625a14; static const uint32_t add_11_11_2 = 0x7d6b1214; +static const uint32_t add_12_11_12 = 0x7d8b6214; static const uint32_t addi_0_12 = 0x380c0000; static const uint32_t addi_2_2 = 0x38420000; static const uint32_t addi_3_3 = 0x38630000; static const uint32_t addi_11_11 = 0x396b0000; static const uint32_t addi_12_1 = 0x39810000; +static const uint32_t addi_12_11 = 0x398b0000; static const uint32_t addi_12_12 = 0x398c0000; static const uint32_t addis_0_2 = 0x3c020000; static const uint32_t addis_0_13 = 0x3c0d0000; @@ -3780,6 +4155,7 @@ static const uint32_t addis_11_11 = 0x3d6b0000; static const uint32_t addis_11_30 = 0x3d7e0000; static const uint32_t addis_12_1 = 0x3d810000; static const uint32_t addis_12_2 = 0x3d820000; +static const uint32_t addis_12_11 = 0x3d8b0000; static const uint32_t addis_12_12 = 0x3d8c0000; static const uint32_t b = 0x48000000; static const uint32_t bcl_20_31 = 0x429f0005; @@ -3808,8 +4184,10 @@ static const uint32_t ld_12_2 = 0xe9820000; static const uint32_t ld_12_3 = 0xe9830000; static const uint32_t ld_12_11 = 0xe98b0000; static const uint32_t ld_12_12 = 0xe98c0000; +static const uint32_t ldx_12_11_12 = 0x7d8b602a; static const uint32_t lfd_0_1 = 0xc8010000; static const uint32_t li_0_0 = 0x38000000; +static const uint32_t li_11_0 = 0x39600000; static const uint32_t li_12_0 = 0x39800000; static const uint32_t lis_0 = 0x3c000000; static const uint32_t lis_2 = 0x3c400000; @@ -3836,6 +4214,11 @@ static const uint32_t mtlr_11 = 0x7d6803a6; static const uint32_t mtlr_12 = 0x7d8803a6; static const uint32_t nop = 0x60000000; static const uint32_t ori_0_0_0 = 0x60000000; +static const uint32_t ori_11_11_0 = 0x616b0000; +static const uint32_t ori_12_12_0 = 0x618c0000; +static const uint32_t oris_12_12_0 = 0x658c0000; +static const uint32_t sldi_11_11_34 = 0x796b1746; +static const uint32_t sldi_12_12_32 = 0x799c07c6; static const uint32_t srdi_0_0_2 = 0x7800f082; static const uint32_t std_0_1 = 0xf8010000; static const uint32_t std_0_12 = 0xf80c0000; @@ -3848,13 +4231,17 @@ static const uint32_t sub_12_12_11 = 0x7d8b6050; static const uint32_t xor_2_12_12 = 0x7d826278; static const uint32_t xor_11_12_12 = 0x7d8b6278; +static const uint64_t paddi_12_pc = 0x0610000039800000ULL; +static const uint64_t pld_12_pc = 0x04100000e5800000ULL; +static const uint64_t pnop = 0x0700000000000000ULL; + // Write out the PLT. template void Output_data_plt_powerpc::do_write(Output_file* of) { - if (size == 32 && this->name_[3] != 'I') + if (size == 32 && (this->name_[3] != 'I' && this->name_[3] != 'L')) { const section_size_type offset = this->offset(); const section_size_type oview_size @@ -3932,6 +4319,7 @@ Target_powerpc::make_iplt_section(Symbol_table* symtab, if (this->iplt_ == NULL) { this->make_plt_section(symtab, layout); + this->make_lplt_section(layout); Reloc_section* iplt_rel = new Reloc_section(false); if (this->rela_dyn_->output_section()) @@ -3944,6 +4332,40 @@ Target_powerpc::make_iplt_section(Symbol_table* symtab, } } +// Create the LPLT section. + +template +void +Target_powerpc::make_lplt_section(Layout* layout) +{ + if (this->lplt_ == NULL) + { + Reloc_section* lplt_rel = NULL; + if (parameters->options().output_is_position_independent()) + { + lplt_rel = new Reloc_section(false); + this->rela_dyn_section(layout); + if (this->rela_dyn_->output_section()) + this->rela_dyn_->output_section() + ->add_output_section_data(lplt_rel); + } + this->lplt_ + = new Output_data_plt_powerpc(this, lplt_rel, + "** LPLT"); + this->make_brlt_section(layout); + if (this->brlt_section_ && this->brlt_section_->output_section()) + this->brlt_section_->output_section() + ->add_output_section_data(this->lplt_); + else + layout->add_output_section_data(".branch_lt", + elfcpp::SHT_PROGBITS, + elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, + this->lplt_, + ORDER_RELRO, + true); + } +} + // A section for huge long branch addresses, similar to plt section. template @@ -4034,9 +4456,8 @@ Target_powerpc::make_brlt_section(Layout* layout) bool is_pic = parameters->options().output_is_position_independent(); if (is_pic) { - // When PIC we can't fill in .branch_lt (like .plt it can be - // a bss style section) but must initialise at runtime via - // dynamic relocations. + // When PIC we can't fill in .branch_lt but must initialise at + // runtime via dynamic relocations. this->rela_dyn_section(layout); brlt_rel = new Reloc_section(false); if (this->rela_dyn_->output_section()) @@ -4050,13 +4471,11 @@ Target_powerpc::make_brlt_section(Layout* layout) ->add_output_section_data(this->brlt_section_); else layout->add_output_section_data(".branch_lt", - (is_pic ? elfcpp::SHT_NOBITS - : elfcpp::SHT_PROGBITS), + elfcpp::SHT_PROGBITS, elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, this->brlt_section_, - (is_pic ? ORDER_SMALL_BSS - : ORDER_SMALL_DATA), - false); + ORDER_RELRO, + true); } } @@ -4096,6 +4515,18 @@ ha(uint32_t a) return hi(a + 0x8000); } +static inline uint64_t +d34(uint64_t v) +{ + return ((v & 0x3ffff0000ULL) << 16) | (v & 0xffff); +} + +static inline uint64_t +ha34(uint64_t v) +{ + return (v + (1ULL << 33)) >> 34; +} + template struct Eh_cie { @@ -4190,14 +4621,27 @@ class Stub_table : public Output_relaxed_input_section struct Plt_stub_ent { Plt_stub_ent(unsigned int off, unsigned int indx) - : off_(off), indx_(indx), r2save_(0), localentry0_(0) + : off_(off), indx_(indx), iter_(0), notoc_(0), r2save_(0), localentry0_(0) { } unsigned int off_; - unsigned int indx_ : 30; + unsigned int indx_ : 28; + unsigned int iter_ : 1; + unsigned int notoc_ : 1; unsigned int r2save_ : 1; unsigned int localentry0_ : 1; }; + struct Branch_stub_ent + { + Branch_stub_ent(unsigned int off, bool notoc, bool save_res) + : off_(off), iter_(false), notoc_(notoc), save_res_(save_res) + { } + + unsigned int off_; + bool iter_; + bool notoc_; + bool save_res_; + }; typedef typename elfcpp::Elf_types::Elf_Addr Address; static const Address invalid_address = static_cast
(0) - 1; @@ -4212,8 +4656,8 @@ class Stub_table : public Output_relaxed_input_section orig_data_size_(owner->current_data_size()), plt_size_(0), last_plt_size_(0), branch_size_(0), last_branch_size_(0), min_size_threshold_(0), - need_save_res_(false), uniq_(id), tls_get_addr_opt_bctrl_(-1u), - plt_fde_len_(0) + need_save_res_(false), need_resize_(false), resizing_(false), + uniq_(id) { this->set_output_section(output_section); @@ -4264,14 +4708,14 @@ class Stub_table : public Output_relaxed_input_section add_long_branch_entry(const Powerpc_relobj*, unsigned int, Address, Address, bool); - Address + const Branch_stub_ent* find_long_branch_entry(const Powerpc_relobj*, Address) const; bool can_reach_stub(Address from, unsigned int off, unsigned int r_type) { - Address max_branch_offset = max_branch_delta(r_type); + Address max_branch_offset = max_branch_delta(r_type); if (max_branch_offset == 0) return true; gold_assert(from != invalid_address); @@ -4294,6 +4738,23 @@ class Stub_table : public Output_relaxed_input_section } } + bool + need_resize() const + { return need_resize_; } + + void + set_resizing(bool val) + { + this->resizing_ = val; + if (val) + { + this->need_resize_ = false; + this->plt_size_ = 0; + this->branch_size_ = 0; + this->need_save_res_ = false; + } + } + Address set_address_and_size(const Output_section* os, Address off) { @@ -4336,6 +4797,10 @@ class Stub_table : public Output_relaxed_input_section plt_size() const { return this->plt_size_; } + section_size_type + branch_size() const + { return this->branch_size_; } + void set_min_size_threshold(Address min_size) { this->min_size_threshold_ = min_size; } @@ -4374,10 +4839,6 @@ class Stub_table : public Output_relaxed_input_section return false; } - // Generate a suitable FDE to describe code in this stub group. - void - init_plt_fde(); - // Add .eh_frame info for this stub section. void add_eh_frame(Layout* layout); @@ -4395,10 +4856,10 @@ class Stub_table : public Output_relaxed_input_section class Plt_stub_key_hash; typedef Unordered_map Plt_stub_entries; - class Branch_stub_ent; - class Branch_stub_ent_hash; - typedef Unordered_map Branch_stub_entries; + class Branch_stub_key; + class Branch_stub_key_hash; + typedef Unordered_map Branch_stub_entries; // Alignment of stub section. unsigned int @@ -4411,61 +4872,23 @@ class Stub_table : public Output_relaxed_input_section // Return the plt offset for the given call stub. Address - plt_off(typename Plt_stub_entries::const_iterator p, bool* is_iplt) const + plt_off(typename Plt_stub_entries::const_iterator p, + const Output_data_plt_powerpc** sec) const { const Symbol* gsym = p->first.sym_; if (gsym != NULL) - { - *is_iplt = (gsym->type() == elfcpp::STT_GNU_IFUNC - && gsym->can_use_relative_reloc(false)); - return gsym->plt_offset(); - } + return this->targ_->plt_off(gsym, sec); else { - *is_iplt = true; const Sized_relobj_file* relobj = p->first.object_; unsigned int local_sym_index = p->first.locsym_; - return relobj->local_plt_offset(local_sym_index); + return this->targ_->plt_off(relobj, local_sym_index, sec); } } // Size of a given plt call stub. unsigned int - plt_call_size(typename Plt_stub_entries::const_iterator p) const - { - if (size == 32) - { - const Symbol* gsym = p->first.sym_; - return (4 * 4 - + (this->targ_->is_tls_get_addr_opt(gsym) ? 8 * 4 : 0)); - } - - bool is_iplt; - Address plt_addr = this->plt_off(p, &is_iplt); - if (is_iplt) - plt_addr += this->targ_->iplt_section()->address(); - else - plt_addr += this->targ_->plt_section()->address(); - Address got_addr = this->targ_->got_section()->output_section()->address(); - const Powerpc_relobj* ppcobj = static_cast - *>(p->first.object_); - got_addr += ppcobj->toc_base_offset(); - Address off = plt_addr - got_addr; - unsigned int bytes = 4 * 4 + 4 * (ha(off) != 0); - const Symbol* gsym = p->first.sym_; - if (this->targ_->is_tls_get_addr_opt(gsym)) - bytes += 13 * 4; - if (this->targ_->abiversion() < 2) - { - bool static_chain = parameters->options().plt_static_chain(); - bool thread_safe = this->targ_->plt_thread_safe(); - bytes += (4 - + 4 * static_chain - + 8 * thread_safe - + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); - } - return bytes; - } + plt_call_size(typename Plt_stub_entries::const_iterator p) const; unsigned int plt_call_align(unsigned int bytes) const @@ -4476,16 +4899,19 @@ class Stub_table : public Output_relaxed_input_section // Return long branch stub size. unsigned int - branch_stub_size(typename Branch_stub_entries::const_iterator p) - { - Address loc = this->stub_address() + this->last_plt_size_ + p->second; - if (p->first.dest_ - loc + (1 << 25) < 2 << 25) - return 4; - unsigned int bytes = 16; - if (size == 32 && parameters->options().output_is_position_independent()) - bytes += 16; - return bytes; - } + branch_stub_size(typename Branch_stub_entries::const_iterator p, + bool* need_lt); + + bool + build_tls_opt_head(unsigned char** pp, + typename Plt_stub_entries::const_iterator cs); + + bool + build_tls_opt_tail(unsigned char* p, + typename Plt_stub_entries::const_iterator cs); + + void + plt_error(const Plt_stub_key& p); // Write out stubs. void @@ -4513,7 +4939,8 @@ class Stub_table : public Output_relaxed_input_section if (size != 32) this->addend_ = addend; else if (parameters->options().output_is_position_independent() - && r_type == elfcpp::R_PPC_PLTREL24) + && (r_type == elfcpp::R_PPC_PLTREL24 + || r_type == elfcpp::R_POWERPC_PLTCALL)) { this->addend_ = addend; if (this->addend_ >= 32768) @@ -4530,7 +4957,8 @@ class Stub_table : public Output_relaxed_input_section if (size != 32) this->addend_ = addend; else if (parameters->options().output_is_position_independent() - && r_type == elfcpp::R_PPC_PLTREL24) + && (r_type == elfcpp::R_PPC_PLTREL24 + || r_type == elfcpp::R_POWERPC_PLTCALL)) this->addend_ = addend; } @@ -4561,18 +4989,17 @@ class Stub_table : public Output_relaxed_input_section }; // Long branch stub keys. - class Branch_stub_ent + class Branch_stub_key { public: - Branch_stub_ent(const Powerpc_relobj* obj, - Address to, bool save_res) - : dest_(to), toc_base_off_(0), save_res_(save_res) + Branch_stub_key(const Powerpc_relobj* obj, Address to) + : dest_(to), toc_base_off_(0) { if (size == 64) toc_base_off_ = obj->toc_base_offset(); } - bool operator==(const Branch_stub_ent& that) const + bool operator==(const Branch_stub_key& that) const { return (this->dest_ == that.dest_ && (size == 32 @@ -4581,14 +5008,13 @@ class Stub_table : public Output_relaxed_input_section Address dest_; unsigned int toc_base_off_; - bool save_res_; }; - class Branch_stub_ent_hash + class Branch_stub_key_hash { public: - size_t operator()(const Branch_stub_ent& ent) const - { return ent.dest_ ^ ent.toc_base_off_; } + size_t operator()(const Branch_stub_key& key) const + { return key.dest_ ^ key.toc_base_off_; } }; // In a sane world this would be a global. @@ -4611,13 +5037,12 @@ class Stub_table : public Output_relaxed_input_section // Set if this stub group needs a copy of out-of-line register // save/restore functions. bool need_save_res_; + // Set when notoc_/r2save_ changes after sizing a stub + bool need_resize_; + // Set when resizing stubs + bool resizing_; // Per stub table unique identifier. uint32_t uniq_; - // The bctrl in the __tls_get_addr_opt stub, if present. - unsigned int tls_get_addr_opt_bctrl_; - // FDE unwind info for this stub group. - unsigned int plt_fde_len_; - unsigned char plt_fde_[20]; }; // Add a plt call stub, if we do not already have one for this @@ -4637,27 +5062,41 @@ Stub_table::add_plt_call_entry( Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); std::pair p = this->plt_call_stubs_.insert(std::make_pair(key, ent)); - if (p.second) + if (size == 64) { - this->plt_size_ = ent.off_ + this->plt_call_size(p.first); - if (size == 64 + if (p.second && this->targ_->is_elfv2_localentry0(gsym)) { p.first->second.localentry0_ = 1; this->targ_->set_has_localentry0(); } - if (this->targ_->is_tls_get_addr_opt(gsym)) + if (r_type == elfcpp::R_PPC64_REL24_NOTOC) + { + if (!p.second && !p.first->second.notoc_ + && !this->targ_->powerxx_stubs()) + this->need_resize_ = true; + p.first->second.notoc_ = 1; + } + else if (!tocsave && !p.first->second.localentry0_) + { + if (!p.second && !p.first->second.r2save_) + this->need_resize_ = true; + p.first->second.r2save_ = 1; + } + } + if (p.second || (this->resizing_ && !p.first->second.iter_)) + { + if (this->resizing_) { - this->targ_->set_has_tls_get_addr_opt(); - this->tls_get_addr_opt_bctrl_ = this->plt_size_ - 5 * 4; + p.first->second.iter_ = 1; + p.first->second.off_ = this->plt_size_; } + this->plt_size_ += this->plt_call_size(p.first); + if (this->targ_->is_tls_get_addr_opt(gsym)) + this->targ_->set_has_tls_get_addr_opt(); this->plt_size_ = this->plt_call_align(this->plt_size_); } - if (size == 64 - && !tocsave - && !p.first->second.localentry0_) - p.first->second.r2save_ = 1; - return this->can_reach_stub(from, ent.off_, r_type); + return this->can_reach_stub(from, p.first->second.off_, r_type); } template @@ -4674,24 +5113,41 @@ Stub_table::add_plt_call_entry( Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); std::pair p = this->plt_call_stubs_.insert(std::make_pair(key, ent)); - if (p.second) + if (size == 64) { - this->plt_size_ = ent.off_ + this->plt_call_size(p.first); - this->plt_size_ = this->plt_call_align(this->plt_size_); - if (size == 64 + if (p.second && this->targ_->is_elfv2_localentry0(object, locsym_index)) { p.first->second.localentry0_ = 1; this->targ_->set_has_localentry0(); } + if (r_type == elfcpp::R_PPC64_REL24_NOTOC) + { + if (!p.second && !p.first->second.notoc_ + && !this->targ_->powerxx_stubs()) + this->need_resize_ = true; + p.first->second.notoc_ = 1; + } + else if (!tocsave && !p.first->second.localentry0_) + { + if (!p.second && !p.first->second.r2save_) + this->need_resize_ = true; + p.first->second.r2save_ = 1; + } } - if (size == 64 - && !tocsave - && !p.first->second.localentry0_) - p.first->second.r2save_ = 1; - return this->can_reach_stub(from, ent.off_, r_type); -} - + if (p.second || (this->resizing_ && !p.first->second.iter_)) + { + if (this->resizing_) + { + p.first->second.iter_ = 1; + p.first->second.off_ = this->plt_size_; + } + this->plt_size_ += this->plt_call_size(p.first); + this->plt_size_ = this->plt_call_align(this->plt_size_); + } + return this->can_reach_stub(from, p.first->second.off_, r_type); +} + // Find a plt call stub. template @@ -4760,85 +5216,87 @@ Stub_table::add_long_branch_entry( Address to, bool save_res) { - Branch_stub_ent ent(object, to, save_res); - Address off = this->branch_size_; + Branch_stub_key key(object, to); + bool notoc = (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC); + Branch_stub_ent ent(this->branch_size_, notoc, save_res); std::pair p - = this->long_branch_stubs_.insert(std::make_pair(ent, off)); - if (p.second) + = this->long_branch_stubs_.insert(std::make_pair(key, ent)); + if (notoc && !p.first->second.notoc_) { + this->need_resize_ = true; + p.first->second.notoc_ = true; + } + gold_assert(save_res == p.first->second.save_res_); + if (p.second || (this->resizing_ && !p.first->second.iter_)) + { + if (this->resizing_) + { + p.first->second.iter_ = 1; + p.first->second.off_ = this->branch_size_; + } if (save_res) this->need_save_res_ = true; else { - unsigned int stub_size = this->branch_stub_size(p.first); - this->branch_size_ = off + stub_size; - if (size == 64 && stub_size != 4) + bool need_lt = false; + unsigned int stub_size = this->branch_stub_size(p.first, &need_lt); + this->branch_size_ += stub_size; + if (size == 64 && need_lt) this->targ_->add_branch_lookup_table(to); } } - return this->can_reach_stub(from, off, r_type); + return this->can_reach_stub(from, p.first->second.off_, r_type); } // Find long branch stub offset. template -typename Stub_table::Address +const typename Stub_table::Branch_stub_ent* Stub_table::find_long_branch_entry( const Powerpc_relobj* object, Address to) const { - Branch_stub_ent ent(object, to, false); + Branch_stub_key key(object, to); typename Branch_stub_entries::const_iterator p - = this->long_branch_stubs_.find(ent); + = this->long_branch_stubs_.find(key); if (p == this->long_branch_stubs_.end()) - return invalid_address; - if (p->first.save_res_) - return to - this->targ_->savres_section()->address() + this->branch_size_; - return p->second; + return NULL; + return &p->second; } -// Generate a suitable FDE to describe code in this stub group. -// The __tls_get_addr_opt call stub needs to describe where it saves -// LR, to support exceptions that might be thrown from __tls_get_addr. - -template -void -Stub_table::init_plt_fde() +template +static void +eh_advance (std::vector& fde, unsigned int delta) { - unsigned char* p = this->plt_fde_; - // offset pcrel sdata4, size udata4, and augmentation size byte. - memset (p, 0, 9); - p += 9; - if (this->tls_get_addr_opt_bctrl_ != -1u) + delta /= 4; + if (delta < 64) + fde.push_back(elfcpp::DW_CFA_advance_loc + delta); + else if (delta < 256) { - unsigned int to_bctrl = this->tls_get_addr_opt_bctrl_ / 4; - if (to_bctrl < 64) - *p++ = elfcpp::DW_CFA_advance_loc + to_bctrl; - else if (to_bctrl < 256) - { - *p++ = elfcpp::DW_CFA_advance_loc1; - *p++ = to_bctrl; - } - else if (to_bctrl < 65536) - { - *p++ = elfcpp::DW_CFA_advance_loc2; - elfcpp::Swap<16, big_endian>::writeval(p, to_bctrl); - p += 2; - } - else - { - *p++ = elfcpp::DW_CFA_advance_loc4; - elfcpp::Swap<32, big_endian>::writeval(p, to_bctrl); - p += 4; - } - *p++ = elfcpp::DW_CFA_offset_extended_sf; - *p++ = 65; - *p++ = -(this->targ_->stk_linker() / 8) & 0x7f; - *p++ = elfcpp::DW_CFA_advance_loc + 4; - *p++ = elfcpp::DW_CFA_restore_extended; - *p++ = 65; + fde.push_back(elfcpp::DW_CFA_advance_loc1); + fde.push_back(delta); + } + else if (delta < 65536) + { + fde.resize(fde.size() + 3); + unsigned char *p = &*fde.end() - 3; + *p++ = elfcpp::DW_CFA_advance_loc2; + elfcpp::Swap<16, big_endian>::writeval(p, delta); + } + else + { + fde.resize(fde.size() + 5); + unsigned char *p = &*fde.end() - 5; + *p++ = elfcpp::DW_CFA_advance_loc4; + elfcpp::Swap<32, big_endian>::writeval(p, delta); } - this->plt_fde_len_ = p - this->plt_fde_; +} + +template +static bool +stub_sort(T s1, T s2) +{ + return s1->second.off_ < s2->second.off_; } // Add .eh_frame info for this stub section. Unlike other linker @@ -4850,7 +5308,8 @@ template void Stub_table::add_eh_frame(Layout* layout) { - if (!parameters->options().ld_generated_unwind_info()) + if (size != 64 + || !parameters->options().ld_generated_unwind_info()) return; // Since we add stub .eh_frame info late, it must be placed @@ -4861,28 +5320,117 @@ Stub_table::add_eh_frame(Layout* layout) if (!this->targ_->has_glink()) return; - if (this->plt_size_ + this->branch_size_ + this->need_save_res_ == 0) + typedef typename Plt_stub_entries::const_iterator plt_iter; + std::vector calls; + if (!this->plt_call_stubs_.empty()) + for (plt_iter cs = this->plt_call_stubs_.begin(); + cs != this->plt_call_stubs_.end(); + ++cs) + if ((this->targ_->is_tls_get_addr_opt(cs->first.sym_) + && cs->second.r2save_ + && !cs->second.localentry0_) + || (cs->second.notoc_ + && !this->targ_->powerxx_stubs())) + calls.push_back(cs); + if (calls.size() > 1) + std::stable_sort(calls.begin(), calls.end(), + stub_sort); + + typedef typename Branch_stub_entries::const_iterator branch_iter; + std::vector branches; + if (!this->long_branch_stubs_.empty() + && !this->targ_->powerxx_stubs()) + for (branch_iter bs = this->long_branch_stubs_.begin(); + bs != this->long_branch_stubs_.end(); + ++bs) + if (bs->second.notoc_) + branches.push_back(bs); + if (branches.size() > 1) + std::stable_sort(branches.begin(), branches.end(), + stub_sort); + + if (calls.empty() && branches.empty()) return; - this->init_plt_fde(); + unsigned int last_eh_loc = 0; + // offset pcrel sdata4, size udata4, and augmentation size byte. + std::vector fde(9, 0); + + for (unsigned int i = 0; i < calls.size(); i++) + { + plt_iter cs = calls[i]; + unsigned int off = cs->second.off_; + // The __tls_get_addr_opt call stub needs to describe where + // it saves LR, to support exceptions that might be thrown + // from __tls_get_addr, and to support asynchronous exceptions. + if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) + { + off += 7 * 4; + if (cs->second.r2save_ + && !cs->second.localentry0_) + { + off += 2 * 4; + eh_advance(fde, off - last_eh_loc); + fde.resize(fde.size() + 6); + unsigned char* p = &*fde.end() - 6; + *p++ = elfcpp::DW_CFA_offset_extended_sf; + *p++ = 65; + *p++ = -(this->targ_->stk_linker() / 8) & 0x7f; + unsigned int delta = this->plt_call_size(cs) - 4 - 9 * 4; + *p++ = elfcpp::DW_CFA_advance_loc + delta / 4; + *p++ = elfcpp::DW_CFA_restore_extended; + *p++ = 65; + last_eh_loc = off + delta; + continue; + } + } + // notoc stubs also should describe LR changes, to support + // asynchronous exceptions. + off += (cs->second.r2save_ ? 4 : 0) + 8; + eh_advance(fde, off - last_eh_loc); + fde.resize(fde.size() + 6); + unsigned char* p = &*fde.end() - 6; + *p++ = elfcpp::DW_CFA_register; + *p++ = 65; + *p++ = 12; + *p++ = elfcpp::DW_CFA_advance_loc + 8 / 4; + *p++ = elfcpp::DW_CFA_restore_extended; + *p++ = 65; + last_eh_loc = off + 8; + } + + for (unsigned int i = 0; i < branches.size(); i++) + { + branch_iter bs = branches[i]; + unsigned int off = bs->second.off_ + 8; + eh_advance(fde, off - last_eh_loc); + fde.resize(fde.size() + 6); + unsigned char* p = &*fde.end() - 6; + *p++ = elfcpp::DW_CFA_register; + *p++ = 65; + *p++ = 12; + *p++ = elfcpp::DW_CFA_advance_loc + 8 / 4; + *p++ = elfcpp::DW_CFA_restore_extended; + *p++ = 65; + last_eh_loc = off + 8; + } + layout->add_eh_frame_for_plt(this, Eh_cie::eh_frame_cie, sizeof (Eh_cie::eh_frame_cie), - this->plt_fde_, this->plt_fde_len_); + &*fde.begin(), fde.size()); } template void Stub_table::remove_eh_frame(Layout* layout) { - if (this->plt_fde_len_ != 0) - { - layout->remove_eh_frame_for_plt(this, - Eh_cie::eh_frame_cie, - sizeof (Eh_cie::eh_frame_cie), - this->plt_fde_, this->plt_fde_len_); - this->plt_fde_len_ = 0; - } + if (size == 64 + && parameters->options().ld_generated_unwind_info() + && this->targ_->has_glink()) + layout->remove_eh_frame_for_plt(this, + Eh_cie::eh_frame_cie, + sizeof (Eh_cie::eh_frame_cie)); } // A class to handle .glink. @@ -5123,19 +5671,433 @@ Stub_table::define_stub_syms(Symbol_table* symtab) bs != this->long_branch_stubs_.end(); ++bs) { - if (bs->first.save_res_) + if (bs->second.save_res_) continue; char* name = new char[8 + 13 + 16 + 1]; sprintf(name, "%08x.long_branch.%llx", this->uniq_, static_cast(bs->first.dest_)); Address value = (this->stub_address() - this->address() - + this->plt_size_ + bs->second); - unsigned int stub_size = this->branch_stub_size(bs); + + this->plt_size_ + bs->second.off_); + bool need_lt = false; + unsigned int stub_size = this->branch_stub_size(bs, &need_lt); this->targ_->define_local(symtab, name, this, value, stub_size); } } +// Emit the start of a __tls_get_addr_opt plt call stub. + +template +bool +Stub_table::build_tls_opt_head( + unsigned char** pp, + typename Plt_stub_entries::const_iterator cs) +{ + if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) + { + unsigned char* p = *pp; + if (size == 64) + { + write_insn(p, ld_11_3 + 0); + p += 4; + write_insn(p, ld_12_3 + 8); + p += 4; + write_insn(p, mr_0_3); + p += 4; + write_insn(p, cmpdi_11_0); + p += 4; + write_insn(p, add_3_12_13); + p += 4; + write_insn(p, beqlr); + p += 4; + write_insn(p, mr_3_0); + p += 4; + if (cs->second.r2save_ && !cs->second.localentry0_) + { + write_insn(p, mflr_11); + p += 4; + write_insn(p, (std_11_1 + this->targ_->stk_linker())); + p += 4; + } + } + else + { + write_insn(p, lwz_11_3 + 0); + p += 4; + write_insn(p, lwz_12_3 + 4); + p += 4; + write_insn(p, mr_0_3); + p += 4; + write_insn(p, cmpwi_11_0); + p += 4; + write_insn(p, add_3_12_2); + p += 4; + write_insn(p, beqlr); + p += 4; + write_insn(p, mr_3_0); + p += 4; + write_insn(p, nop); + p += 4; + } + *pp = p; + return true; + } + return false; +} + +// Emit the tail of a __tls_get_addr_opt plt call stub. + +template +bool +Stub_table::build_tls_opt_tail( + unsigned char* p, + typename Plt_stub_entries::const_iterator cs) +{ + if (size == 64 + && cs->second.r2save_ + && !cs->second.localentry0_ + && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) + { + write_insn(p, bctrl); + p += 4; + write_insn(p, ld_2_1 + this->targ_->stk_toc()); + p += 4; + write_insn(p, ld_11_1 + this->targ_->stk_linker()); + p += 4; + write_insn(p, mtlr_11); + p += 4; + write_insn(p, blr); + return true; + } + return false; +} + +// Emit pc-relative plt call stub code. + +template +static unsigned char* +build_powerxx_offset(unsigned char* p, uint64_t off, uint64_t odd, bool load) +{ + uint64_t insn; + if (off - odd + (1ULL << 33) < 1ULL << 34) + { + off -= odd; + if (odd) + { + write_insn(p, nop); + p += 4; + } + if (load) + insn = pld_12_pc; + else + insn = paddi_12_pc; + insn |= d34(off); + write_insn(p, insn >> 32); + p += 4; + write_insn(p, insn & 0xffffffff); + } + else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) + { + off -= 8 - odd; + write_insn(p, li_11_0 | (ha34(off) & 0xffff)); + p += 4; + if (!odd) + { + write_insn(p, sldi_11_11_34); + p += 4; + } + insn = paddi_12_pc | d34(off); + write_insn(p, insn >> 32); + p += 4; + write_insn(p, insn & 0xffffffff); + p += 4; + if (odd) + { + write_insn(p, sldi_11_11_34); + p += 4; + } + if (load) + write_insn(p, ldx_12_11_12); + else + write_insn(p, add_12_11_12); + } + else + { + off -= odd + 8; + write_insn(p, lis_11 | ((ha34(off) >> 16) & 0x3fff)); + p += 4; + write_insn(p, ori_11_11_0 | (ha34(off) & 0xffff)); + p += 4; + if (odd) + { + write_insn(p, sldi_11_11_34); + p += 4; + } + insn = paddi_12_pc | d34(off); + write_insn(p, insn >> 32); + p += 4; + write_insn(p, insn & 0xffffffff); + p += 4; + if (!odd) + { + write_insn(p, sldi_11_11_34); + p += 4; + } + if (load) + write_insn(p, ldx_12_11_12); + else + write_insn(p, add_12_11_12); + } + p += 4; + return p; +} + +// Gets the address of a label (1:) in r11 and builds an offset in r12, +// then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). +// mflr %r12 +// bcl 20,31,1f +// 1: mflr %r11 +// mtlr %r12 +// lis %r12,xxx-1b@highest +// ori %r12,%r12,xxx-1b@higher +// sldi %r12,%r12,32 +// oris %r12,%r12,xxx-1b@high +// ori %r12,%r12,xxx-1b@l +// add/ldx %r12,%r11,%r12 + +template +static unsigned char* +build_notoc_offset(unsigned char* p, uint64_t off, bool load) +{ + write_insn(p, mflr_12); + p += 4; + write_insn(p, bcl_20_31); + p += 4; + write_insn(p, mflr_11); + p += 4; + write_insn(p, mtlr_12); + p += 4; + if (off + 0x8000 < 0x10000) + { + if (load) + write_insn(p, ld_12_11 + l(off)); + else + write_insn(p, addi_12_11 + l(off)); + } + else if (off + 0x80008000ULL < 0x100000000ULL) + { + write_insn(p, addis_12_11 + ha(off)); + p += 4; + if (load) + write_insn(p, ld_12_12 + l(off)); + else + write_insn(p, addi_12_12 + l(off)); + } + else + { + if (off + 0x800000000000ULL < 0x1000000000000ULL) + { + write_insn(p, li_12_0 + ((off >> 32) & 0xffff)); + p += 4; + } + else + { + write_insn(p, lis_12 + ((off >> 48) & 0xffff)); + p += 4; + if (((off >> 32) & 0xffff) != 0) + { + write_insn(p, ori_12_12_0 + ((off >> 32) & 0xffff)); + p += 4; + } + } + if (((off >> 32) & 0xffffffffULL) != 0) + { + write_insn(p, sldi_12_12_32); + p += 4; + } + if (hi(off) != 0) + { + write_insn(p, oris_12_12_0 + hi(off)); + p += 4; + } + if (l(off) != 0) + { + write_insn(p, ori_12_12_0 + l(off)); + p += 4; + } + if (load) + write_insn(p, ldx_12_11_12); + else + write_insn(p, add_12_11_12); + } + p += 4; + return p; +} + +// Size of a given plt call stub. + +template +unsigned int +Stub_table::plt_call_size( + typename Plt_stub_entries::const_iterator p) const +{ + if (size == 32) + { + const Symbol* gsym = p->first.sym_; + return (4 * 4 + + (this->targ_->is_tls_get_addr_opt(gsym) ? 8 * 4 : 0)); + } + + const Output_data_plt_powerpc* plt; + uint64_t plt_addr = this->plt_off(p, &plt); + plt_addr += plt->address(); + unsigned int bytes = 0; + const Symbol* gsym = p->first.sym_; + if (this->targ_->is_tls_get_addr_opt(gsym)) + { + if (p->second.r2save_ && !p->second.localentry0_) + bytes = 13 * 4; + else + bytes = 7 * 4; + } + + if (p->second.r2save_) + bytes += 4; + + if (this->targ_->powerxx_stubs()) + { + uint64_t from = this->stub_address() + p->second.off_ + bytes; + if (bytes > 8 * 4) + from -= 4 * 4; + uint64_t odd = from & 4; + uint64_t off = plt_addr - from; + if (off - odd + (1ULL << 33) < 1ULL << 34) + bytes += odd + 4 * 4; + else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) + bytes += 7 * 4; + else + bytes += 8 * 4; + return bytes; + } + + if (p->second.notoc_) + { + uint64_t from = this->stub_address() + p->second.off_ + bytes + 2 * 4; + if (bytes > 32) + from -= 4 * 4; + uint64_t off = plt_addr - from; + if (off + 0x8000 < 0x10000) + bytes += 7 * 4; + else if (off + 0x80008000ULL < 0x100000000ULL) + bytes += 8 * 4; + else + { + bytes += 8 * 4; + if (off + 0x800000000000ULL >= 0x1000000000000ULL + && ((off >> 32) & 0xffff) != 0) + bytes += 4; + if (((off >> 32) & 0xffffffffULL) != 0) + bytes += 4; + if (hi(off) != 0) + bytes += 4; + if (l(off) != 0) + bytes += 4; + } + return bytes; + } + + uint64_t got_addr = this->targ_->got_section()->output_section()->address(); + const Powerpc_relobj* ppcobj = static_cast + *>(p->first.object_); + got_addr += ppcobj->toc_base_offset(); + uint64_t off = plt_addr - got_addr; + bytes += 3 * 4 + 4 * (ha(off) != 0); + if (this->targ_->abiversion() < 2) + { + bool static_chain = parameters->options().plt_static_chain(); + bool thread_safe = this->targ_->plt_thread_safe(); + bytes += (4 + + 4 * static_chain + + 8 * thread_safe + + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); + } + return bytes; +} + +// Return long branch stub size. + +template +unsigned int +Stub_table::branch_stub_size( + typename Branch_stub_entries::const_iterator p, + bool* need_lt) +{ + Address loc = this->stub_address() + this->last_plt_size_ + p->second.off_; + if (size == 32) + { + if (p->first.dest_ - loc + (1 << 25) < 2 << 25) + return 4; + if (parameters->options().output_is_position_independent()) + return 32; + return 16; + } + + uint64_t off = p->first.dest_ - loc; + if (p->second.notoc_) + { + if (this->targ_->powerxx_stubs()) + { + Address odd = loc & 4; + if (off + (1 << 25) < 2 << 25) + return odd + 12; + if (off - odd + (1ULL << 33) < 1ULL << 34) + return odd + 16; + if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) + return 28; + return 32; + } + off -= 8; + if (off + 0x8000 < 0x10000) + return 24; + if (off + 0x80008000ULL < 0x100000000ULL) + { + if (off + 24 + (1 << 25) < 2 << 25) + return 28; + return 32; + } + unsigned int bytes = 32; + if (off + 0x800000000000ULL >= 0x1000000000000ULL + && ((off >> 32) & 0xffff) != 0) + bytes += 4; + if (((off >> 32) & 0xffffffffULL) != 0) + bytes += 4; + if (hi(off) != 0) + bytes += 4; + if (l(off) != 0) + bytes += 4; + return bytes; + } + + if (off + (1 << 25) < 2 << 25) + return 4; + if (!this->targ_->powerxx_stubs()) + *need_lt = true; + return 16; +} + +template +void +Stub_table::plt_error(const Plt_stub_key& p) +{ + if (p.sym_) + gold_error(_("linkage table error against `%s'"), + p.sym_->demangled_name().c_str()); + else + gold_error(_("linkage table error against `%s:[local %u]'"), + p.object_->name().c_str(), + p.locsym_); +} + // Write out plt and long branch stub code. template @@ -5153,50 +6115,148 @@ Stub_table::do_write(Output_file* of) unsigned char* const oview = of->get_output_view(off, oview_size); unsigned char* p; - if (size == 64) + if (size == 64 + && this->targ_->powerxx_stubs()) + { + if (!this->plt_call_stubs_.empty()) + { + // Write out plt call stubs. + typename Plt_stub_entries::const_iterator cs; + for (cs = this->plt_call_stubs_.begin(); + cs != this->plt_call_stubs_.end(); + ++cs) + { + p = oview + cs->second.off_; + this->build_tls_opt_head(&p, cs); + if (cs->second.r2save_) + { + write_insn(p, std_2_1 + this->targ_->stk_toc()); + p += 4; + } + const Output_data_plt_powerpc* plt; + Address pltoff = this->plt_off(cs, &plt); + Address plt_addr = pltoff + plt->address(); + Address from = this->stub_address() + (p - oview); + Address delta = plt_addr - from; + p = build_powerxx_offset(p, delta, from & 4, true); + write_insn(p, mtctr_12); + p += 4; + if (!this->build_tls_opt_tail(p, cs)) + write_insn(p, bctr); + } + } + + // Write out long branch stubs. + typename Branch_stub_entries::const_iterator bs; + for (bs = this->long_branch_stubs_.begin(); + bs != this->long_branch_stubs_.end(); + ++bs) + { + if (bs->second.save_res_) + continue; + Address off = this->plt_size_ + bs->second.off_; + p = oview + off; + Address loc = this->stub_address() + off; + Address delta = bs->first.dest_ - loc; + if (bs->second.notoc_ || delta + (1 << 25) >= 2 << 25) + { + unsigned char* startp = p; + p = build_powerxx_offset(p, delta, loc & 4, false); + delta -= p - startp; + } + if (delta + (1 << 25) < 2 << 25) + write_insn(p, b | (delta & 0x3fffffc)); + else + { + write_insn(p, mtctr_12); + p += 4; + write_insn(p, bctr); + } + } + } + else if (size == 64) { const Output_data_got_powerpc* got = this->targ_->got_section(); Address got_os_addr = got->output_section()->address(); - if (!this->plt_call_stubs_.empty()) + if (!this->plt_call_stubs_.empty() + && this->targ_->abiversion() >= 2) { - // The base address of the .plt section. - Address plt_base = this->targ_->plt_section()->address(); - Address iplt_base = invalid_address; - - // Write out plt call stubs. + // Write out plt call stubs for ELFv2. typename Plt_stub_entries::const_iterator cs; for (cs = this->plt_call_stubs_.begin(); cs != this->plt_call_stubs_.end(); ++cs) { - bool is_iplt; - Address pltoff = this->plt_off(cs, &is_iplt); - Address plt_addr = pltoff; - if (is_iplt) + const Output_data_plt_powerpc* plt; + Address pltoff = this->plt_off(cs, &plt); + Address plt_addr = pltoff + plt->address(); + + p = oview + cs->second.off_; + this->build_tls_opt_head(&p, cs); + if (cs->second.r2save_) + { + write_insn(p, std_2_1 + this->targ_->stk_toc()); + p += 4; + } + if (cs->second.notoc_) { - if (iplt_base == invalid_address) - iplt_base = this->targ_->iplt_section()->address(); - plt_addr += iplt_base; + Address from = this->stub_address() + (p - oview) + 8; + Address off = plt_addr - from; + p = build_notoc_offset(p, off, true); } else - plt_addr += plt_base; + { + const Powerpc_relobj* ppcobj = static_cast + *>(cs->first.object_); + Address got_addr = got_os_addr + ppcobj->toc_base_offset(); + Address off = plt_addr - got_addr; + + if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) + this->plt_error(cs->first); + + if (ha(off) != 0) + { + write_insn(p, addis_12_2 + ha(off)); + p += 4; + write_insn(p, ld_12_12 + l(off)); + p += 4; + } + else + { + write_insn(p, ld_12_2 + l(off)); + p += 4; + } + } + write_insn(p, mtctr_12); + p += 4; + if (!this->build_tls_opt_tail(p, cs)) + write_insn(p, bctr); + } + } + else if (!this->plt_call_stubs_.empty()) + { + // Write out plt call stubs for ELFv1. + typename Plt_stub_entries::const_iterator cs; + for (cs = this->plt_call_stubs_.begin(); + cs != this->plt_call_stubs_.end(); + ++cs) + { + const Output_data_plt_powerpc* plt; + Address pltoff = this->plt_off(cs, &plt); + Address plt_addr = pltoff + plt->address(); const Powerpc_relobj* ppcobj = static_cast *>(cs->first.object_); Address got_addr = got_os_addr + ppcobj->toc_base_offset(); Address off = plt_addr - got_addr; - if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) - gold_error(_("%s: linkage table error against `%s'"), - cs->first.object_->name().c_str(), - cs->first.sym_->demangled_name().c_str()); + if (off + 0x80008000 > 0xffffffff || (off & 7) != 0 + || cs->second.notoc_) + this->plt_error(cs->first); - bool plt_load_toc = this->targ_->abiversion() < 2; - bool static_chain - = plt_load_toc && parameters->options().plt_static_chain(); - bool thread_safe - = plt_load_toc && this->targ_->plt_thread_safe(); + bool static_chain = parameters->options().plt_static_chain(); + bool thread_safe = this->targ_->plt_thread_safe(); bool use_fake_dep = false; Address cmp_branch_off = 0; if (thread_safe) @@ -5222,94 +6282,47 @@ Stub_table::do_write(Output_file* of) } p = oview + cs->second.off_; - const Symbol* gsym = cs->first.sym_; - if (this->targ_->is_tls_get_addr_opt(gsym)) + if (this->build_tls_opt_head(&p, cs)) + use_fake_dep = thread_safe; + if (cs->second.r2save_) { - write_insn(p, ld_11_3 + 0); - p += 4; - write_insn(p, ld_12_3 + 8); - p += 4; - write_insn(p, mr_0_3); - p += 4; - write_insn(p, cmpdi_11_0); - p += 4; - write_insn(p, add_3_12_13); + write_insn(p, std_2_1 + this->targ_->stk_toc()); p += 4; - write_insn(p, beqlr); - p += 4; - write_insn(p, mr_3_0); - p += 4; - if (!cs->second.localentry0_) - { - write_insn(p, mflr_11); - p += 4; - write_insn(p, (std_11_1 - + this->targ_->stk_linker())); - p += 4; - } - use_fake_dep = thread_safe; } if (ha(off) != 0) { - if (cs->second.r2save_) - { - write_insn(p, - std_2_1 + this->targ_->stk_toc()); - p += 4; - } - if (plt_load_toc) + write_insn(p, addis_11_2 + ha(off)); + p += 4; + write_insn(p, ld_12_11 + l(off)); + p += 4; + if (ha(off + 8 + 8 * static_chain) != ha(off)) { - write_insn(p, addis_11_2 + ha(off)); - p += 4; - write_insn(p, ld_12_11 + l(off)); + write_insn(p, addi_11_11 + l(off)); p += 4; + off = 0; } - else + write_insn(p, mtctr_12); + p += 4; + if (use_fake_dep) { - write_insn(p, addis_12_2 + ha(off)); + write_insn(p, xor_2_12_12); p += 4; - write_insn(p, ld_12_12 + l(off)); + write_insn(p, add_11_11_2); p += 4; } - if (plt_load_toc - && ha(off + 8 + 8 * static_chain) != ha(off)) - { - write_insn(p, addi_11_11 + l(off)); - p += 4; - off = 0; - } - write_insn(p, mtctr_12); + write_insn(p, ld_2_11 + l(off + 8)); p += 4; - if (plt_load_toc) + if (static_chain) { - if (use_fake_dep) - { - write_insn(p, xor_2_12_12); - p += 4; - write_insn(p, add_11_11_2); - p += 4; - } - write_insn(p, ld_2_11 + l(off + 8)); + write_insn(p, ld_11_11 + l(off + 16)); p += 4; - if (static_chain) - { - write_insn(p, ld_11_11 + l(off + 16)); - p += 4; - } } } else { - if (cs->second.r2save_) - { - write_insn(p, - std_2_1 + this->targ_->stk_toc()); - p += 4; - } write_insn(p, ld_12_2 + l(off)); p += 4; - if (plt_load_toc - && ha(off + 8 + 8 * static_chain) != ha(off)) + if (ha(off + 8 + 8 * static_chain) != ha(off)) { write_insn(p, addi_2_2 + l(off)); p += 4; @@ -5317,37 +6330,23 @@ Stub_table::do_write(Output_file* of) } write_insn(p, mtctr_12); p += 4; - if (plt_load_toc) + if (use_fake_dep) { - if (use_fake_dep) - { - write_insn(p, xor_11_12_12); - p += 4; - write_insn(p, add_2_2_11); - p += 4; - } - if (static_chain) - { - write_insn(p, ld_11_2 + l(off + 16)); - p += 4; - } - write_insn(p, ld_2_2 + l(off + 8)); + write_insn(p, xor_11_12_12); p += 4; - } - } - if (!cs->second.localentry0_ - && this->targ_->is_tls_get_addr_opt(gsym)) - { - write_insn(p, bctrl); - p += 4; - write_insn(p, ld_2_1 + this->targ_->stk_toc()); - p += 4; - write_insn(p, ld_11_1 + this->targ_->stk_linker()); - p += 4; - write_insn(p, mtlr_11); + write_insn(p, add_2_2_11); + p += 4; + } + if (static_chain) + { + write_insn(p, ld_11_2 + l(off + 16)); + p += 4; + } + write_insn(p, ld_2_2 + l(off + 8)); p += 4; - write_insn(p, blr); } + if (this->build_tls_opt_tail(p, cs)) + ; else if (thread_safe && !use_fake_dep) { write_insn(p, cmpldi_2_0); @@ -5367,14 +6366,19 @@ Stub_table::do_write(Output_file* of) bs != this->long_branch_stubs_.end(); ++bs) { - if (bs->first.save_res_) + if (bs->second.save_res_) continue; - p = oview + this->plt_size_ + bs->second; - Address loc = this->stub_address() + this->plt_size_ + bs->second; + Address off = this->plt_size_ + bs->second.off_; + p = oview + off; + Address loc = this->stub_address() + off; Address delta = bs->first.dest_ - loc; - if (delta + (1 << 25) < 2 << 25) - write_insn(p, b | (delta & 0x3fffffc)); - else + if (bs->second.notoc_) + { + unsigned char* startp = p; + p = build_notoc_offset(p, off, false); + delta -= p - startp; + } + else if (delta + (1 << 25) >= 2 << 25) { Address brlt_addr = this->targ_->find_branch_lookup_table(bs->first.dest_); @@ -5384,25 +6388,31 @@ Stub_table::do_write(Output_file* of) Address brltoff = brlt_addr - got_addr; if (ha(brltoff) == 0) { - write_insn(p, ld_12_2 + l(brltoff)), p += 4; + write_insn(p, ld_12_2 + l(brltoff)); + p += 4; } else { - write_insn(p, addis_12_2 + ha(brltoff)), p += 4; - write_insn(p, ld_12_12 + l(brltoff)), p += 4; + write_insn(p, addis_12_2 + ha(brltoff)); + p += 4; + write_insn(p, ld_12_12 + l(brltoff)); + p += 4; } - write_insn(p, mtctr_12), p += 4; + } + if (delta + (1 << 25) < 2 << 25) + write_insn(p, b | (delta & 0x3fffffc)); + else + { + write_insn(p, mtctr_12); + p += 4; write_insn(p, bctr); } } } - else + else // size == 32 { if (!this->plt_call_stubs_.empty()) { - // The base address of the .plt section. - Address plt_base = this->targ_->plt_section()->address(); - Address iplt_base = invalid_address; // The address of _GLOBAL_OFFSET_TABLE_. Address g_o_t = invalid_address; @@ -5412,38 +6422,12 @@ Stub_table::do_write(Output_file* of) cs != this->plt_call_stubs_.end(); ++cs) { - bool is_iplt; - Address plt_addr = this->plt_off(cs, &is_iplt); - if (is_iplt) - { - if (iplt_base == invalid_address) - iplt_base = this->targ_->iplt_section()->address(); - plt_addr += iplt_base; - } - else - plt_addr += plt_base; + const Output_data_plt_powerpc* plt; + Address plt_addr = this->plt_off(cs, &plt); + plt_addr += plt->address(); p = oview + cs->second.off_; - const Symbol* gsym = cs->first.sym_; - if (this->targ_->is_tls_get_addr_opt(gsym)) - { - write_insn(p, lwz_11_3 + 0); - p += 4; - write_insn(p, lwz_12_3 + 4); - p += 4; - write_insn(p, mr_0_3); - p += 4; - write_insn(p, cmpwi_11_0); - p += 4; - write_insn(p, add_3_12_2); - p += 4; - write_insn(p, beqlr); - p += 4; - write_insn(p, mr_3_0); - p += 4; - write_insn(p, nop); - p += 4; - } + this->build_tls_opt_head(&p, cs); if (parameters->options().output_is_position_independent()) { Address got_addr; @@ -5498,10 +6482,11 @@ Stub_table::do_write(Output_file* of) bs != this->long_branch_stubs_.end(); ++bs) { - if (bs->first.save_res_) + if (bs->second.save_res_) continue; - p = oview + this->plt_size_ + bs->second; - Address loc = this->stub_address() + this->plt_size_ + bs->second; + Address off = this->plt_size_ + bs->second.off_; + p = oview + off; + Address loc = this->stub_address() + off; Address delta = bs->first.dest_ - loc; if (delta + (1 << 25) < 2 << 25) write_insn(p, b | (delta & 0x3fffffc)); @@ -5645,8 +6630,7 @@ Output_data_glink::do_write(Output_file* of) Address off = plt_addr - my_addr; if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) - gold_error(_("%s: linkage table error against `%s'"), - ge->first->object()->name().c_str(), + gold_error(_("linkage table error against `%s'"), ge->first->demangled_name().c_str()); write_insn(p, addis_12_12 + ha(off)), p += 4; @@ -6130,6 +7114,20 @@ Target_powerpc::make_plt_entry(Symbol_table* symtab, } } +// Make a PLT entry for a local symbol. + +template +void +Target_powerpc::make_local_plt_entry( + Layout* layout, + Sized_relobj_file* relobj, + unsigned int r_sym) +{ + if (this->lplt_ == NULL) + this->make_lplt_section(layout); + this->lplt_->add_local_entry(relobj, r_sym); +} + // Make a PLT entry for a local STT_GNU_IFUNC symbol. template @@ -6207,6 +7205,15 @@ Target_powerpc::Scan::get_reference_flags( case elfcpp::R_POWERPC_ADDR16_LO: case elfcpp::R_POWERPC_ADDR16_HI: case elfcpp::R_POWERPC_ADDR16_HA: + case elfcpp::R_PPC64_ADDR16_HIGHER34: + case elfcpp::R_PPC64_ADDR16_HIGHERA34: + case elfcpp::R_PPC64_ADDR16_HIGHEST34: + case elfcpp::R_PPC64_ADDR16_HIGHESTA34: + case elfcpp::R_PPC64_D34: + case elfcpp::R_PPC64_D34_LO: + case elfcpp::R_PPC64_D34_HI30: + case elfcpp::R_PPC64_D34_HA30: + case elfcpp::R_PPC64_D28: ref = Symbol::ABSOLUTE_REF; break; @@ -6224,9 +7231,25 @@ Target_powerpc::Scan::get_reference_flags( case elfcpp::R_POWERPC_REL16_LO: case elfcpp::R_POWERPC_REL16_HI: case elfcpp::R_POWERPC_REL16_HA: + case elfcpp::R_PPC64_REL16_HIGH: + case elfcpp::R_PPC64_REL16_HIGHA: + case elfcpp::R_PPC64_REL16_HIGHER: + case elfcpp::R_PPC64_REL16_HIGHERA: + case elfcpp::R_PPC64_REL16_HIGHEST: + case elfcpp::R_PPC64_REL16_HIGHESTA: + case elfcpp::R_PPC64_PCREL34: + case elfcpp::R_PPC64_REL16_HIGHER34: + case elfcpp::R_PPC64_REL16_HIGHERA34: + case elfcpp::R_PPC64_REL16_HIGHEST34: + case elfcpp::R_PPC64_REL16_HIGHESTA34: + case elfcpp::R_PPC64_PCREL28: ref = Symbol::RELATIVE_REF; break; + case elfcpp::R_PPC64_REL24_NOTOC: + if (size == 32) + break; + // Fall through. case elfcpp::R_POWERPC_REL24: case elfcpp::R_PPC_PLTREL24: case elfcpp::R_POWERPC_REL14: @@ -6241,17 +7264,32 @@ Target_powerpc::Scan::get_reference_flags( case elfcpp::R_POWERPC_GOT16_HA: case elfcpp::R_PPC64_GOT16_DS: case elfcpp::R_PPC64_GOT16_LO_DS: + case elfcpp::R_PPC64_GOT_PCREL34: 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_POWERPC_PLT16_LO: + case elfcpp::R_POWERPC_PLT16_HI: + case elfcpp::R_POWERPC_PLT16_HA: + case elfcpp::R_PPC64_PLT16_LO_DS: + case elfcpp::R_PPC64_PLT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: ref = Symbol::RELATIVE_REF; break; case elfcpp::R_POWERPC_GOT_TPREL16: case elfcpp::R_POWERPC_TLS: + case elfcpp::R_PPC64_TLSGD: + case elfcpp::R_PPC64_TLSLD: + case elfcpp::R_PPC64_TPREL34: + case elfcpp::R_PPC64_DTPREL34: + case elfcpp::R_PPC64_GOT_TLSGD34: + case elfcpp::R_PPC64_GOT_TLSLD34: + case elfcpp::R_PPC64_GOT_TPREL34: + case elfcpp::R_PPC64_GOT_DTPREL34: ref = Symbol::TLS_REF; break; @@ -6317,7 +7355,6 @@ Target_powerpc::Scan::check_non_pic(Relobj* object, case elfcpp::R_POWERPC_ADDR14_BRTAKEN: case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: case elfcpp::R_POWERPC_REL32: - case elfcpp::R_POWERPC_REL24: case elfcpp::R_POWERPC_TPREL16: case elfcpp::R_POWERPC_TPREL16_LO: case elfcpp::R_POWERPC_TPREL16_HI: @@ -6366,6 +7403,7 @@ Target_powerpc::Scan::check_non_pic(Relobj* object, { // These are the relocation types supported only on 32-bit. // ??? glibc ld.so doesn't need to support these. + case elfcpp::R_POWERPC_REL24: case elfcpp::R_POWERPC_DTPREL16: case elfcpp::R_POWERPC_DTPREL16_LO: case elfcpp::R_POWERPC_DTPREL16_HI: @@ -6428,9 +7466,28 @@ Target_powerpc::Scan::reloc_needs_plt_for_ifunc( case elfcpp::R_POWERPC_GOT16_HA: case elfcpp::R_PPC64_GOT16_DS: case elfcpp::R_PPC64_GOT16_LO_DS: + case elfcpp::R_PPC64_GOT_PCREL34: return false; + // PLT relocs are OK and need a PLT entry. + case elfcpp::R_POWERPC_PLT16_LO: + case elfcpp::R_POWERPC_PLT16_HI: + case elfcpp::R_POWERPC_PLT16_HA: + case elfcpp::R_PPC64_PLT16_LO_DS: + case elfcpp::R_POWERPC_PLTSEQ: + case elfcpp::R_POWERPC_PLTCALL: + case elfcpp::R_PPC64_PLTSEQ_NOTOC: + case elfcpp::R_PPC64_PLTCALL_NOTOC: + case elfcpp::R_PPC64_PLT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: + return true; + break; + // Function calls are good, and these do need a PLT entry. + case elfcpp::R_PPC64_REL24_NOTOC: + if (size == 32) + break; + // Fall through. case elfcpp::R_POWERPC_ADDR24: case elfcpp::R_POWERPC_ADDR14: case elfcpp::R_POWERPC_ADDR14_BRTAKEN: @@ -6564,6 +7621,28 @@ Target_powerpc::Scan::local( case elfcpp::R_POWERPC_GNU_VTENTRY: case elfcpp::R_POWERPC_TLS: case elfcpp::R_PPC64_ENTRY: + case elfcpp::R_POWERPC_PLTSEQ: + case elfcpp::R_POWERPC_PLTCALL: + case elfcpp::R_PPC64_PLTSEQ_NOTOC: + case elfcpp::R_PPC64_PLTCALL_NOTOC: + case elfcpp::R_PPC64_PCREL_OPT: + case elfcpp::R_PPC64_ADDR16_HIGHER34: + case elfcpp::R_PPC64_ADDR16_HIGHERA34: + case elfcpp::R_PPC64_ADDR16_HIGHEST34: + case elfcpp::R_PPC64_ADDR16_HIGHESTA34: + case elfcpp::R_PPC64_REL16_HIGHER34: + case elfcpp::R_PPC64_REL16_HIGHERA34: + case elfcpp::R_PPC64_REL16_HIGHEST34: + case elfcpp::R_PPC64_REL16_HIGHESTA34: + case elfcpp::R_PPC64_D34: + case elfcpp::R_PPC64_D34_LO: + case elfcpp::R_PPC64_D34_HI30: + case elfcpp::R_PPC64_D34_HA30: + case elfcpp::R_PPC64_D28: + case elfcpp::R_PPC64_PCREL34: + case elfcpp::R_PPC64_PCREL28: + case elfcpp::R_PPC64_TPREL34: + case elfcpp::R_PPC64_DTPREL34: break; case elfcpp::R_PPC64_TOC: @@ -6655,6 +7734,23 @@ Target_powerpc::Scan::local( } break; + case elfcpp::R_PPC64_PLT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: + case elfcpp::R_POWERPC_PLT16_LO: + case elfcpp::R_POWERPC_PLT16_HI: + case elfcpp::R_POWERPC_PLT16_HA: + case elfcpp::R_PPC64_PLT16_LO_DS: + if (!is_ifunc) + { + unsigned int r_sym = elfcpp::elf_r_sym(reloc.get_r_info()); + target->make_local_plt_entry(layout, object, r_sym); + } + break; + + case elfcpp::R_PPC64_REL24_NOTOC: + if (size == 32) + break; + // Fall through. case elfcpp::R_POWERPC_REL24: case elfcpp::R_PPC_PLTREL24: case elfcpp::R_PPC_LOCAL24PC: @@ -6697,6 +7793,12 @@ Target_powerpc::Scan::local( case elfcpp::R_POWERPC_REL16_HI: case elfcpp::R_POWERPC_REL16_HA: case elfcpp::R_POWERPC_REL16DX_HA: + case elfcpp::R_PPC64_REL16_HIGH: + case elfcpp::R_PPC64_REL16_HIGHA: + case elfcpp::R_PPC64_REL16_HIGHER: + case elfcpp::R_PPC64_REL16_HIGHERA: + case elfcpp::R_PPC64_REL16_HIGHEST: + case elfcpp::R_PPC64_REL16_HIGHESTA: case elfcpp::R_POWERPC_SECTOFF: case elfcpp::R_POWERPC_SECTOFF_LO: case elfcpp::R_POWERPC_SECTOFF_HI: @@ -6732,6 +7834,7 @@ Target_powerpc::Scan::local( case elfcpp::R_PPC64_ADDR64_LOCAL: break; + case elfcpp::R_PPC64_GOT_PCREL34: case elfcpp::R_POWERPC_GOT16: case elfcpp::R_POWERPC_GOT16_LO: case elfcpp::R_POWERPC_GOT16_HI: @@ -6780,6 +7883,7 @@ Target_powerpc::Scan::local( target->got_section(symtab, layout); break; + case elfcpp::R_PPC64_GOT_TLSGD34: case elfcpp::R_POWERPC_GOT_TLSGD16: case elfcpp::R_POWERPC_GOT_TLSGD16_LO: case elfcpp::R_POWERPC_GOT_TLSGD16_HI: @@ -6804,6 +7908,7 @@ Target_powerpc::Scan::local( } break; + case elfcpp::R_PPC64_GOT_TLSLD34: case elfcpp::R_POWERPC_GOT_TLSLD16: case elfcpp::R_POWERPC_GOT_TLSLD16_LO: case elfcpp::R_POWERPC_GOT_TLSLD16_HI: @@ -6827,6 +7932,7 @@ Target_powerpc::Scan::local( } break; + case elfcpp::R_PPC64_GOT_DTPREL34: case elfcpp::R_POWERPC_GOT_DTPREL16: case elfcpp::R_POWERPC_GOT_DTPREL16_LO: case elfcpp::R_POWERPC_GOT_DTPREL16_HI: @@ -6839,6 +7945,7 @@ Target_powerpc::Scan::local( } break; + case elfcpp::R_PPC64_GOT_TPREL34: case elfcpp::R_POWERPC_GOT_TPREL16: case elfcpp::R_POWERPC_GOT_TPREL16_LO: case elfcpp::R_POWERPC_GOT_TPREL16_HI: @@ -7030,6 +8137,52 @@ Target_powerpc::Scan::local( case elfcpp::R_PPC64_TOC16: case elfcpp::R_PPC64_TOC16_DS: ppc_object->set_has_small_toc_reloc(); + break; + default: + break; + } + + switch (r_type) + { + 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_DS: + case elfcpp::R_PPC64_TPREL16_LO_DS: + case elfcpp::R_PPC64_TPREL16_HIGH: + case elfcpp::R_PPC64_TPREL16_HIGHA: + case elfcpp::R_PPC64_TPREL16_HIGHER: + case elfcpp::R_PPC64_TPREL16_HIGHERA: + case elfcpp::R_PPC64_TPREL16_HIGHEST: + case elfcpp::R_PPC64_TPREL16_HIGHESTA: + case elfcpp::R_PPC64_TPREL34: + layout->set_has_static_tls(); + break; + default: + break; + } + + switch (r_type) + { + case elfcpp::R_PPC64_D34: + case elfcpp::R_PPC64_D34_LO: + case elfcpp::R_PPC64_D34_HI30: + case elfcpp::R_PPC64_D34_HA30: + case elfcpp::R_PPC64_D28: + case elfcpp::R_PPC64_PCREL34: + case elfcpp::R_PPC64_PCREL28: + case elfcpp::R_PPC64_TPREL34: + case elfcpp::R_PPC64_DTPREL34: + case elfcpp::R_PPC64_PLT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: + case elfcpp::R_PPC64_GOT_PCREL34: + case elfcpp::R_PPC64_GOT_TLSGD34: + case elfcpp::R_PPC64_GOT_TLSLD34: + case elfcpp::R_PPC64_GOT_DTPREL34: + case elfcpp::R_PPC64_GOT_TPREL34: + target->set_powerxx_stubs(); + break; default: break; } @@ -7113,6 +8266,28 @@ Target_powerpc::Scan::global( case elfcpp::R_PPC_LOCAL24PC: case elfcpp::R_POWERPC_TLS: case elfcpp::R_PPC64_ENTRY: + case elfcpp::R_POWERPC_PLTSEQ: + case elfcpp::R_POWERPC_PLTCALL: + case elfcpp::R_PPC64_PLTSEQ_NOTOC: + case elfcpp::R_PPC64_PLTCALL_NOTOC: + case elfcpp::R_PPC64_PCREL_OPT: + case elfcpp::R_PPC64_ADDR16_HIGHER34: + case elfcpp::R_PPC64_ADDR16_HIGHERA34: + case elfcpp::R_PPC64_ADDR16_HIGHEST34: + case elfcpp::R_PPC64_ADDR16_HIGHESTA34: + case elfcpp::R_PPC64_REL16_HIGHER34: + case elfcpp::R_PPC64_REL16_HIGHERA34: + case elfcpp::R_PPC64_REL16_HIGHEST34: + case elfcpp::R_PPC64_REL16_HIGHESTA34: + case elfcpp::R_PPC64_D34: + case elfcpp::R_PPC64_D34_LO: + case elfcpp::R_PPC64_D34_HI30: + case elfcpp::R_PPC64_D34_HA30: + case elfcpp::R_PPC64_D28: + case elfcpp::R_PPC64_PCREL34: + case elfcpp::R_PPC64_PCREL28: + case elfcpp::R_PPC64_TPREL34: + case elfcpp::R_PPC64_DTPREL34: break; case elfcpp::R_PPC64_TOC: @@ -7248,6 +8423,20 @@ Target_powerpc::Scan::global( } break; + case elfcpp::R_PPC64_PLT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: + case elfcpp::R_POWERPC_PLT16_LO: + case elfcpp::R_POWERPC_PLT16_HI: + case elfcpp::R_POWERPC_PLT16_HA: + case elfcpp::R_PPC64_PLT16_LO_DS: + if (!pushed_ifunc) + target->make_plt_entry(symtab, layout, gsym); + break; + + case elfcpp::R_PPC64_REL24_NOTOC: + if (size == 32) + break; + // Fall through. case elfcpp::R_PPC_PLTREL24: case elfcpp::R_POWERPC_REL24: if (!is_ifunc) @@ -7327,6 +8516,12 @@ Target_powerpc::Scan::global( case elfcpp::R_POWERPC_REL16_HI: case elfcpp::R_POWERPC_REL16_HA: case elfcpp::R_POWERPC_REL16DX_HA: + case elfcpp::R_PPC64_REL16_HIGH: + case elfcpp::R_PPC64_REL16_HIGHA: + case elfcpp::R_PPC64_REL16_HIGHER: + case elfcpp::R_PPC64_REL16_HIGHERA: + case elfcpp::R_PPC64_REL16_HIGHEST: + case elfcpp::R_PPC64_REL16_HIGHESTA: case elfcpp::R_POWERPC_SECTOFF: case elfcpp::R_POWERPC_SECTOFF_LO: case elfcpp::R_POWERPC_SECTOFF_HI: @@ -7362,6 +8557,7 @@ Target_powerpc::Scan::global( case elfcpp::R_PPC64_ADDR64_LOCAL: break; + case elfcpp::R_PPC64_GOT_PCREL34: case elfcpp::R_POWERPC_GOT16: case elfcpp::R_POWERPC_GOT16_LO: case elfcpp::R_POWERPC_GOT16_HI: @@ -7420,6 +8616,7 @@ Target_powerpc::Scan::global( target->got_section(symtab, layout); break; + case elfcpp::R_PPC64_GOT_TLSGD34: case elfcpp::R_POWERPC_GOT_TLSGD16: case elfcpp::R_POWERPC_GOT_TLSGD16_LO: case elfcpp::R_POWERPC_GOT_TLSGD16_HI: @@ -7468,6 +8665,7 @@ Target_powerpc::Scan::global( } break; + case elfcpp::R_PPC64_GOT_TLSLD34: case elfcpp::R_POWERPC_GOT_TLSLD16: case elfcpp::R_POWERPC_GOT_TLSLD16_LO: case elfcpp::R_POWERPC_GOT_TLSLD16_HI: @@ -7491,6 +8689,7 @@ Target_powerpc::Scan::global( } break; + case elfcpp::R_PPC64_GOT_DTPREL34: case elfcpp::R_POWERPC_GOT_DTPREL16: case elfcpp::R_POWERPC_GOT_DTPREL16_LO: case elfcpp::R_POWERPC_GOT_DTPREL16_HI: @@ -7510,6 +8709,7 @@ Target_powerpc::Scan::global( } break; + case elfcpp::R_PPC64_GOT_TPREL34: case elfcpp::R_POWERPC_GOT_TPREL16: case elfcpp::R_POWERPC_GOT_TPREL16_LO: case elfcpp::R_POWERPC_GOT_TPREL16_HI: @@ -7695,6 +8895,52 @@ Target_powerpc::Scan::global( case elfcpp::R_PPC64_TOC16: case elfcpp::R_PPC64_TOC16_DS: ppc_object->set_has_small_toc_reloc(); + break; + default: + break; + } + + switch (r_type) + { + 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_DS: + case elfcpp::R_PPC64_TPREL16_LO_DS: + case elfcpp::R_PPC64_TPREL16_HIGH: + case elfcpp::R_PPC64_TPREL16_HIGHA: + case elfcpp::R_PPC64_TPREL16_HIGHER: + case elfcpp::R_PPC64_TPREL16_HIGHERA: + case elfcpp::R_PPC64_TPREL16_HIGHEST: + case elfcpp::R_PPC64_TPREL16_HIGHESTA: + case elfcpp::R_PPC64_TPREL34: + layout->set_has_static_tls(); + break; + default: + break; + } + + switch (r_type) + { + case elfcpp::R_PPC64_D34: + case elfcpp::R_PPC64_D34_LO: + case elfcpp::R_PPC64_D34_HI30: + case elfcpp::R_PPC64_D34_HA30: + case elfcpp::R_PPC64_D28: + case elfcpp::R_PPC64_PCREL34: + case elfcpp::R_PPC64_PCREL28: + case elfcpp::R_PPC64_TPREL34: + case elfcpp::R_PPC64_DTPREL34: + case elfcpp::R_PPC64_PLT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: + case elfcpp::R_PPC64_GOT_PCREL34: + case elfcpp::R_PPC64_GOT_TLSGD34: + case elfcpp::R_PPC64_GOT_TLSLD34: + case elfcpp::R_PPC64_GOT_DTPREL34: + case elfcpp::R_PPC64_GOT_TPREL34: + target->set_powerxx_stubs(); + break; default: break; } @@ -8124,7 +9370,7 @@ template void Target_powerpc::do_finalize_sections( Layout* layout, - const Input_objects*, + const Input_objects* input_objects, Symbol_table* symtab) { if (parameters->doing_static_link()) @@ -8227,6 +9473,243 @@ Target_powerpc::do_finalize_sections( // relocs. if (this->copy_relocs_.any_saved_relocs()) this->copy_relocs_.emit(this->rela_dyn_section(layout)); + + for (Input_objects::Relobj_iterator p = input_objects->relobj_begin(); + p != input_objects->relobj_end(); + ++p) + { + Powerpc_relobj* ppc_relobj + = static_cast*>(*p); + if (ppc_relobj->attributes_section_data()) + this->merge_object_attributes(ppc_relobj->name().c_str(), + ppc_relobj->attributes_section_data()); + } + for (Input_objects::Dynobj_iterator p = input_objects->dynobj_begin(); + p != input_objects->dynobj_end(); + ++p) + { + Powerpc_dynobj* ppc_dynobj + = static_cast*>(*p); + if (ppc_dynobj->attributes_section_data()) + this->merge_object_attributes(ppc_dynobj->name().c_str(), + ppc_dynobj->attributes_section_data()); + } + + // Create a .gnu.attributes section if we have merged any attributes + // from inputs. + if (this->attributes_section_data_ != NULL + && this->attributes_section_data_->size() != 0) + { + Output_attributes_section_data* attributes_section + = new Output_attributes_section_data(*this->attributes_section_data_); + layout->add_output_section_data(".gnu.attributes", + elfcpp::SHT_GNU_ATTRIBUTES, 0, + attributes_section, ORDER_INVALID, false); + } +} + +// Merge object attributes from input file called NAME with those of the +// output. The input object attributes are in the object pointed by PASD. + +template +void +Target_powerpc::merge_object_attributes( + const char* name, + const Attributes_section_data* pasd) +{ + // Return if there is no attributes section data. + if (pasd == NULL) + return; + + // Create output object attributes. + if (this->attributes_section_data_ == NULL) + this->attributes_section_data_ = new Attributes_section_data(NULL, 0); + + const int vendor = Object_attribute::OBJ_ATTR_GNU; + const Object_attribute* in_attr = pasd->known_attributes(vendor); + Object_attribute* out_attr + = this->attributes_section_data_->known_attributes(vendor); + + const char* err; + const char* first; + const char* second; + int tag = elfcpp::Tag_GNU_Power_ABI_FP; + int in_fp = in_attr[tag].int_value() & 0xf; + int out_fp = out_attr[tag].int_value() & 0xf; + if (in_fp != out_fp) + { + err = NULL; + if ((in_fp & 3) == 0) + ; + else if ((out_fp & 3) == 0) + { + out_fp |= in_fp & 3; + out_attr[tag].set_int_value(out_fp); + out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); + this->last_fp_ = name; + } + else if ((out_fp & 3) != 2 && (in_fp & 3) == 2) + { + err = N_("%s uses hard float, %s uses soft float"); + first = this->last_fp_; + second = name; + } + else if ((out_fp & 3) == 2 && (in_fp & 3) != 2) + { + err = N_("%s uses hard float, %s uses soft float"); + first = name; + second = this->last_fp_; + } + else if ((out_fp & 3) == 1 && (in_fp & 3) == 3) + { + err = N_("%s uses double-precision hard float, " + "%s uses single-precision hard float"); + first = this->last_fp_; + second = name; + } + else if ((out_fp & 3) == 3 && (in_fp & 3) == 1) + { + err = N_("%s uses double-precision hard float, " + "%s uses single-precision hard float"); + first = name; + second = this->last_fp_; + } + + if (err || (in_fp & 0xc) == 0) + ; + else if ((out_fp & 0xc) == 0) + { + out_fp |= in_fp & 0xc; + out_attr[tag].set_int_value(out_fp); + out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); + this->last_ld_ = name; + } + else if ((out_fp & 0xc) != 2 * 4 && (in_fp & 0xc) == 2 * 4) + { + err = N_("%s uses 64-bit long double, %s uses 128-bit long double"); + first = name; + second = this->last_ld_; + } + else if ((in_fp & 0xc) != 2 * 4 && (out_fp & 0xc) == 2 * 4) + { + err = N_("%s uses 64-bit long double, %s uses 128-bit long double"); + first = this->last_ld_; + second = name; + } + else if ((out_fp & 0xc) == 1 * 4 && (in_fp & 0xc) == 3 * 4) + { + err = N_("%s uses IBM long double, %s uses IEEE long double"); + first = this->last_ld_; + second = name; + } + else if ((out_fp & 0xc) == 3 * 4 && (in_fp & 0xc) == 1 * 4) + { + err = N_("%s uses IBM long double, %s uses IEEE long double"); + first = name; + second = this->last_ld_; + } + + if (err) + { + if (parameters->options().warn_mismatch()) + gold_error(_(err), first, second); + // Arrange for this attribute to be deleted. It's better to + // say "don't know" about a file than to wrongly claim compliance. + out_attr[tag].set_type(0); + } + } + + if (size == 32) + { + tag = elfcpp::Tag_GNU_Power_ABI_Vector; + int in_vec = in_attr[tag].int_value() & 3; + int out_vec = out_attr[tag].int_value() & 3; + if (in_vec != out_vec) + { + err = NULL; + if (in_vec == 0) + ; + else if (out_vec == 0) + { + out_vec = in_vec; + out_attr[tag].set_int_value(out_vec); + out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); + this->last_vec_ = name; + } + // For now, allow generic to transition to AltiVec or SPE + // without a warning. If GCC marked files with their stack + // alignment and used don't-care markings for files which are + // not affected by the vector ABI, we could warn about this + // case too. */ + else if (in_vec == 1) + ; + else if (out_vec == 1) + { + out_vec = in_vec; + out_attr[tag].set_int_value(out_vec); + out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); + this->last_vec_ = name; + } + else if (out_vec < in_vec) + { + err = N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI"); + first = this->last_vec_; + second = name; + } + else if (out_vec > in_vec) + { + err = N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI"); + first = name; + second = this->last_vec_; + } + if (err) + { + if (parameters->options().warn_mismatch()) + gold_error(_(err), first, second); + out_attr[tag].set_type(0); + } + } + + tag = elfcpp::Tag_GNU_Power_ABI_Struct_Return; + int in_struct = in_attr[tag].int_value() & 3; + int out_struct = out_attr[tag].int_value() & 3; + if (in_struct != out_struct) + { + err = NULL; + if (in_struct == 0 || in_struct == 3) + ; + else if (out_struct == 0) + { + out_struct = in_struct; + out_attr[tag].set_int_value(out_struct); + out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); + this->last_struct_ = name; + } + else if (out_struct < in_struct) + { + err = N_("%s uses r3/r4 for small structure returns, " + "%s uses memory"); + first = this->last_struct_; + second = name; + } + else if (out_struct > in_struct) + { + err = N_("%s uses r3/r4 for small structure returns, " + "%s uses memory"); + first = name; + second = this->last_struct_; + } + if (err) + { + if (parameters->options().warn_mismatch()) + gold_error(_(err), first, second); + out_attr[tag].set_type(0); + } + } + } + + // Merge Tag_compatibility attributes and any common GNU ones. + this->attributes_section_data_->merge(name, pasd); } // Emit any saved relocs, and mark toc entries using any of these @@ -8302,18 +9785,157 @@ Target_powerpc::symval_for_branch( *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); if (symtab->is_section_folded(symobj, *dest_shndx)) { - Section_id folded - = symtab->icf()->get_folded_section(symobj, *dest_shndx); - symobj = static_cast*>(folded.first); - *dest_shndx = folded.second; + Section_id folded + = symtab->icf()->get_folded_section(symobj, *dest_shndx); + symobj = static_cast*>(folded.first); + *dest_shndx = folded.second; + } + Address sec_addr = symobj->get_output_section_offset(*dest_shndx); + if (sec_addr == invalid_address) + return false; + + sec_addr += symobj->output_section(*dest_shndx)->address(); + *value = sec_addr + sec_off; + } + return true; +} + +template +static bool +relative_value_is_known(const Sized_symbol* gsym) +{ + if (gsym->type() == elfcpp::STT_GNU_IFUNC) + return false; + + if (gsym->is_from_dynobj() + || gsym->is_undefined() + || gsym->is_preemptible()) + return false; + + if (gsym->is_absolute()) + return !parameters->options().output_is_position_independent(); + + return true; +} + +template +static bool +relative_value_is_known(const Symbol_value* psymval) +{ + if (psymval->is_ifunc_symbol()) + return false; + + bool is_ordinary; + unsigned int shndx = psymval->input_shndx(&is_ordinary); + + return is_ordinary && shndx != elfcpp::SHN_UNDEF; +} + +// PCREL_OPT in one instance flags to the linker that a pair of insns: +// pld ra,symbol@got@pcrel +// load/store rt,0(ra) +// or +// pla ra,symbol@pcrel +// load/store rt,0(ra) +// may be translated to +// pload/pstore rt,symbol@pcrel +// nop. +// This function returns true if the optimization is possible, placing +// the prefix insn in *PINSN1 and a NOP in *PINSN2. +// +// On entry to this function, the linker has already determined that +// the pld can be replaced with pla: *PINSN1 is that pla insn, +// while *PINSN2 is the second instruction. + +inline bool +xlate_pcrel_opt(uint64_t *pinsn1, uint64_t *pinsn2) +{ + uint32_t insn2 = *pinsn2 >> 32; + uint64_t i1new; + + // Check that regs match. + if (((insn2 >> 16) & 31) != ((*pinsn1 >> 21) & 31)) + return false; + + switch ((insn2 >> 26) & 63) + { + default: + return false; + + case 32: // lwz + case 34: // lbz + case 36: // stw + case 38: // stb + case 40: // lhz + case 42: // lha + case 44: // sth + case 48: // lfs + case 50: // lfd + case 52: // stfs + case 54: // stfd + // These are the PMLS cases, where we just need to tack a prefix + // on the insn. Check that the D field is zero. + if ((insn2 & 0xffff) != 0) + return false; + i1new = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) + | (insn2 & ((63ULL << 26) | (31ULL << 21)))); + break; + + case 58: // lwa, ld + if ((insn2 & 0xfffd) != 0) + return false; + i1new = ((1ULL << 58) | (1ULL << 52) + | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) + | (insn2 & (31ULL << 21))); + break; + + case 57: // lxsd, lxssp + if ((insn2 & 0xfffc) != 0 || (insn2 & 3) < 2) + return false; + i1new = ((1ULL << 58) | (1ULL << 52) + | ((40ULL | (insn2 & 3)) << 26) + | (insn2 & (31ULL << 21))); + break; + + case 61: // stxsd, stxssp, lxv, stxv + if ((insn2 & 3) == 0) + return false; + else if ((insn2 & 3) >= 2) + { + if ((insn2 & 0xfffc) != 0) + return false; + i1new = ((1ULL << 58) | (1ULL << 52) + | ((44ULL | (insn2 & 3)) << 26) + | (insn2 & (31ULL << 21))); } - Address sec_addr = symobj->get_output_section_offset(*dest_shndx); - if (sec_addr == invalid_address) + else + { + if ((insn2 & 0xfff0) != 0) + return false; + i1new = ((1ULL << 58) | (1ULL << 52) + | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) + | (insn2 & (31ULL << 21))); + } + break; + + case 56: // lq + if ((insn2 & 0xffff) != 0) return false; + i1new = ((1ULL << 58) | (1ULL << 52) + | (insn2 & ((63ULL << 26) | (31ULL << 21)))); + break; - sec_addr += symobj->output_section(*dest_shndx)->address(); - *value = sec_addr + sec_off; + case 62: // std, stq + if ((insn2 & 0xfffd) != 0) + return false; + i1new = ((1ULL << 58) | (1ULL << 52) + | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) + | (insn2 & (31ULL << 21))); + break; } + + *pinsn1 = i1new; + *pinsn2 = (uint64_t) nop << 32; return true; } @@ -8334,6 +9956,10 @@ Target_powerpc::Relocate::relocate( Address address, section_size_type view_size) { + typedef Powerpc_relocate_functions Reloc; + typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; + typedef typename elfcpp::Rela Reltype; + if (view == NULL) return true; @@ -8352,14 +9978,30 @@ Target_powerpc::Relocate::relocate( // We have already complained. break; case Track_tls::SKIP: + if (is_plt16_reloc(r_type) + || r_type == elfcpp::R_POWERPC_PLTSEQ + || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC) + { + Insn* iview = reinterpret_cast(view); + elfcpp::Swap<32, big_endian>::writeval(iview, nop); + } + else if (size == 64 && r_type == elfcpp::R_POWERPC_PLTCALL) + { + Insn* iview = reinterpret_cast(view); + elfcpp::Swap<32, big_endian>::writeval(iview + 1, nop); + } + else if (size == 64 && (r_type == elfcpp::R_PPC64_PLT_PCREL34 + || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) + { + Insn* iview = reinterpret_cast(view); + elfcpp::Swap<32, big_endian>::writeval(iview, pnop >> 32); + elfcpp::Swap<32, big_endian>::writeval(iview + 1, pnop & 0xffffffff); + } return true; case Track_tls::NORMAL: break; } - typedef Powerpc_relocate_functions Reloc; - typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; - typedef typename elfcpp::Rela Reltype; // Offset from start of insn to d-field reloc. const int d_offset = big_endian ? 2 : 0; @@ -8369,9 +10011,18 @@ Target_powerpc::Relocate::relocate( bool has_stub_value = false; bool localentry0 = false; unsigned int r_sym = elfcpp::elf_r_sym(rela.get_r_info()); - if ((gsym != NULL + bool has_plt_offset + = (gsym != NULL ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) - : object->local_has_plt_offset(r_sym)) + : object->local_has_plt_offset(r_sym)); + if (has_plt_offset + && !is_plt16_reloc(r_type) + && r_type != elfcpp::R_PPC64_PLT_PCREL34 + && r_type != elfcpp::R_PPC64_PLT_PCREL34_NOTOC + && r_type != elfcpp::R_POWERPC_PLTSEQ + && r_type != elfcpp::R_POWERPC_PLTCALL + && r_type != elfcpp::R_PPC64_PLTSEQ_NOTOC + && r_type != elfcpp::R_PPC64_PLTCALL_NOTOC && (!psymval->is_ifunc_symbol() || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) { @@ -8379,7 +10030,7 @@ Target_powerpc::Relocate::relocate( && gsym != NULL && target->abiversion() >= 2 && !parameters->options().output_is_position_independent() - && !is_branch_reloc(r_type)) + && !is_branch_reloc(r_type)) { Address off = target->glink_section()->find_global_entry(gsym); if (off != invalid_address) @@ -8397,7 +10048,7 @@ Target_powerpc::Relocate::relocate( && !(size == 32 && gsym != NULL && !parameters->options().output_is_position_independent() - && !is_branch_reloc(r_type))) + && !is_branch_reloc(r_type))) stub_table = object->stub_table(relinfo->data_shndx); if (stub_table == NULL) { @@ -8424,7 +10075,11 @@ Target_powerpc::Relocate::relocate( size_t reloc_count = shdr.get_sh_size() / reloc_size; if (size == 64 && ent->r2save_ - && relnum + 1 < reloc_count) + && r_type == elfcpp::R_PPC64_REL24_NOTOC) + value += 4; + else if (size == 64 + && ent->r2save_ + && relnum < reloc_count - 1) { Reltype next_rela(preloc + reloc_size); if (elfcpp::elf_r_type(next_rela.get_r_info()) @@ -8443,12 +10098,63 @@ Target_powerpc::Relocate::relocate( gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); } - 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) + if (has_plt_offset && (is_plt16_reloc(r_type) + || r_type == elfcpp::R_PPC64_PLT_PCREL34 + || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) + { + const Output_data_plt_powerpc* plt; + if (gsym) + value = target->plt_off(gsym, &plt); + else + value = target->plt_off(object, r_sym, &plt); + value += plt->address(); + + if (size == 64) + { + if (r_type != elfcpp::R_PPC64_PLT_PCREL34 + && r_type != elfcpp::R_PPC64_PLT_PCREL34_NOTOC) + value -= (target->got_section()->output_section()->address() + + object->toc_base_offset()); + } + else if (parameters->options().output_is_position_independent()) + { + if (rela.get_r_addend() >= 32768) + { + unsigned int got2 = object->got2_shndx(); + value -= (object->get_output_section_offset(got2) + + object->output_section(got2)->address() + + rela.get_r_addend()); + } + else + value -= (target->got_section()->address() + + target->got_section()->g_o_t()); + } + } + else if (!has_plt_offset + && (is_plt16_reloc(r_type) + || r_type == elfcpp::R_POWERPC_PLTSEQ + || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC)) + { + Insn* iview = reinterpret_cast(view); + elfcpp::Swap<32, big_endian>::writeval(iview, nop); + r_type = elfcpp::R_POWERPC_NONE; + } + else if (!has_plt_offset + && (r_type == elfcpp::R_PPC64_PLT_PCREL34 + || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) + { + Insn* iview = reinterpret_cast(view); + elfcpp::Swap<32, big_endian>::writeval(iview, pnop >> 32); + elfcpp::Swap<32, big_endian>::writeval(iview + 1, pnop & 0xffffffff); + r_type = elfcpp::R_POWERPC_NONE; + } + else 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 + || r_type == elfcpp::R_PPC64_GOT_PCREL34) { if (gsym != NULL) { @@ -8460,7 +10166,10 @@ Target_powerpc::Relocate::relocate( 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()->got_base_offset(object); + if (r_type == elfcpp::R_PPC64_GOT_PCREL34) + value += target->got_section()->address(); + else + value -= target->got_section()->got_base_offset(object); } else if (r_type == elfcpp::R_PPC64_TOC) { @@ -8539,7 +10248,8 @@ Target_powerpc::Relocate::relocate( else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI - || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) + || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA + || r_type == elfcpp::R_PPC64_GOT_TLSGD34) { // First instruction of a global dynamic sequence, arg setup insn. const bool final = gsym == NULL || gsym->final_value_is_known(); @@ -8561,67 +10271,121 @@ Target_powerpc::Relocate::relocate( gold_assert(object->local_has_got_offset(r_sym, got_type)); value = object->local_got_offset(r_sym, got_type); } - value -= target->got_section()->got_base_offset(object); + if (r_type == elfcpp::R_PPC64_GOT_TLSGD34) + value += target->got_section()->address(); + else + value -= target->got_section()->got_base_offset(object); } if (tls_type == tls::TLSOPT_TO_IE) { - if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 - || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) + if (r_type == elfcpp::R_PPC64_GOT_TLSGD34) { - Insn* iview = reinterpret_cast(view - d_offset); - Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); - insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi - if (size == 32) - insn |= 32 << 26; // lwz - else - insn |= 58 << 26; // ld - elfcpp::Swap<32, big_endian>::writeval(iview, insn); + Insn* iview = reinterpret_cast(view); + uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); + pinsn <<= 32; + pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); + // pla -> pld + pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); + elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); + elfcpp::Swap<32, big_endian>::writeval(iview + 1, + pinsn & 0xffffffff); + r_type = elfcpp::R_PPC64_GOT_TPREL34; + } + else + { + if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 + || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) + { + Insn* iview = reinterpret_cast(view - d_offset); + Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); + insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi + if (size == 32) + insn |= 32 << 26; // lwz + else + insn |= 58 << 26; // ld + elfcpp::Swap<32, big_endian>::writeval(iview, insn); + } + r_type += (elfcpp::R_POWERPC_GOT_TPREL16 + - elfcpp::R_POWERPC_GOT_TLSGD16); } - r_type += (elfcpp::R_POWERPC_GOT_TPREL16 - - elfcpp::R_POWERPC_GOT_TLSGD16); } else if (tls_type == tls::TLSOPT_TO_LE) { - if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 - || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) + if (r_type == elfcpp::R_PPC64_GOT_TLSGD34) { - Insn* iview = reinterpret_cast(view - d_offset); - Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); - insn &= (1 << 26) - (1 << 21); // extract rt - if (size == 32) - insn |= addis_0_2; - else - insn |= addis_0_13; - elfcpp::Swap<32, big_endian>::writeval(iview, insn); - r_type = elfcpp::R_POWERPC_TPREL16_HA; + Insn* iview = reinterpret_cast(view); + uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); + pinsn <<= 32; + pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); + // pla pcrel -> paddi r13 + pinsn += (-1ULL << 52) + (13ULL << 16); + elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); + elfcpp::Swap<32, big_endian>::writeval(iview + 1, + pinsn & 0xffffffff); + r_type = elfcpp::R_PPC64_TPREL34; value = psymval->value(object, rela.get_r_addend()); } else { - Insn* iview = reinterpret_cast(view - d_offset); - Insn insn = nop; - elfcpp::Swap<32, big_endian>::writeval(iview, insn); - r_type = elfcpp::R_POWERPC_NONE; + if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 + || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) + { + Insn* iview = reinterpret_cast(view - d_offset); + Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); + insn &= (1 << 26) - (1 << 21); // extract rt + if (size == 32) + insn |= addis_0_2; + else + insn |= addis_0_13; + elfcpp::Swap<32, big_endian>::writeval(iview, insn); + r_type = elfcpp::R_POWERPC_TPREL16_HA; + value = psymval->value(object, rela.get_r_addend()); + } + else + { + Insn* iview = reinterpret_cast(view - d_offset); + Insn insn = nop; + elfcpp::Swap<32, big_endian>::writeval(iview, insn); + r_type = elfcpp::R_POWERPC_NONE; + } } } } else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI - || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) + || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA + || r_type == elfcpp::R_PPC64_GOT_TLSLD34) { // First instruction of a local dynamic sequence, arg setup insn. const tls::Tls_optimization tls_type = target->optimize_tls_ld(); if (tls_type == tls::TLSOPT_NONE) { value = target->tlsld_got_offset(); - value -= target->got_section()->got_base_offset(object); + if (r_type == elfcpp::R_PPC64_GOT_TLSLD34) + value += target->got_section()->address(); + else + value -= target->got_section()->got_base_offset(object); } else { gold_assert(tls_type == tls::TLSOPT_TO_LE); - if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 - || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) + if (r_type == elfcpp::R_PPC64_GOT_TLSLD34) + { + Insn* iview = reinterpret_cast(view); + uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); + pinsn <<= 32; + pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); + // pla pcrel -> paddi r13 + pinsn += (-1ULL << 52) + (13ULL << 16); + elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); + elfcpp::Swap<32, big_endian>::writeval(iview + 1, + pinsn & 0xffffffff); + r_type = elfcpp::R_PPC64_TPREL34; + value = dtp_offset; + } + else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 + || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) { Insn* iview = reinterpret_cast(view - d_offset); Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); @@ -8646,7 +10410,8 @@ Target_powerpc::Relocate::relocate( else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI - || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) + || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA + || r_type == elfcpp::R_PPC64_GOT_DTPREL34) { // Accesses relative to a local dynamic sequence address, // no optimisation here. @@ -8660,12 +10425,16 @@ Target_powerpc::Relocate::relocate( gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); } - value -= target->got_section()->got_base_offset(object); + if (r_type == elfcpp::R_PPC64_GOT_DTPREL34) + value += target->got_section()->address(); + else + value -= target->got_section()->got_base_offset(object); } else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI - || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) + || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA + || r_type == elfcpp::R_PPC64_GOT_TPREL34) { // First instruction of initial exec sequence. const bool final = gsym == NULL || gsym->final_value_is_known(); @@ -8682,13 +10451,31 @@ Target_powerpc::Relocate::relocate( gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); } - value -= target->got_section()->got_base_offset(object); + if (r_type == elfcpp::R_PPC64_GOT_TPREL34) + value += target->got_section()->address(); + else + value -= target->got_section()->got_base_offset(object); } else { gold_assert(tls_type == tls::TLSOPT_TO_LE); - if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 - || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) + if (r_type == elfcpp::R_PPC64_GOT_TPREL34) + { + Insn* iview = reinterpret_cast(view); + uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); + pinsn <<= 32; + pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); + // pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel + pinsn += ((2ULL << 56) + (-1ULL << 52) + + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); + elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); + elfcpp::Swap<32, big_endian>::writeval(iview + 1, + pinsn & 0xffffffff); + r_type = elfcpp::R_PPC64_TPREL34; + value = psymval->value(object, rela.get_r_addend()); + } + else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 + || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) { Insn* iview = reinterpret_cast(view - d_offset); Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); @@ -8731,12 +10518,33 @@ Target_powerpc::Relocate::relocate( } else { + bool is_pcrel = false; + const int reloc_size = elfcpp::Elf_sizes::rela_size; + elfcpp::Shdr shdr(relinfo->reloc_shdr); + size_t reloc_count = shdr.get_sh_size() / reloc_size; + if (relnum < reloc_count - 1) + { + Reltype next_rela(preloc + reloc_size); + unsigned int r_type2 + = elfcpp::elf_r_type(next_rela.get_r_info()); + if ((r_type2 == elfcpp::R_PPC64_REL24_NOTOC + || r_type2 == elfcpp::R_PPC64_PLTCALL_NOTOC) + && next_rela.get_r_offset() == rela.get_r_offset()) + is_pcrel = true; + } Insn* iview = reinterpret_cast(view); - Insn insn = addi_3_3; - elfcpp::Swap<32, big_endian>::writeval(iview, insn); - r_type = elfcpp::R_POWERPC_TPREL16_LO; - view += d_offset; - value = psymval->value(object, rela.get_r_addend()); + if (is_pcrel) + { + elfcpp::Swap<32, big_endian>::writeval(iview, nop); + r_type = elfcpp::R_POWERPC_NONE; + } + else + { + elfcpp::Swap<32, big_endian>::writeval(iview, addi_3_3); + r_type = elfcpp::R_POWERPC_TPREL16_LO; + view += d_offset; + value = psymval->value(object, rela.get_r_addend()); + } } this->skip_next_tls_get_addr_call(); } @@ -8750,13 +10558,34 @@ Target_powerpc::Relocate::relocate( const tls::Tls_optimization tls_type = target->optimize_tls_ld(); if (tls_type == tls::TLSOPT_TO_LE) { + bool is_pcrel = false; + const int reloc_size = elfcpp::Elf_sizes::rela_size; + elfcpp::Shdr shdr(relinfo->reloc_shdr); + size_t reloc_count = shdr.get_sh_size() / reloc_size; + if (relnum < reloc_count - 1) + { + Reltype next_rela(preloc + reloc_size); + unsigned int r_type2 + = elfcpp::elf_r_type(next_rela.get_r_info()); + if ((r_type2 == elfcpp::R_PPC64_REL24_NOTOC + || r_type2 == elfcpp::R_PPC64_PLTCALL_NOTOC) + && next_rela.get_r_offset() == rela.get_r_offset()) + is_pcrel = true; + } Insn* iview = reinterpret_cast(view); - Insn insn = addi_3_3; - elfcpp::Swap<32, big_endian>::writeval(iview, insn); + if (is_pcrel) + { + elfcpp::Swap<32, big_endian>::writeval(iview, nop); + r_type = elfcpp::R_POWERPC_NONE; + } + else + { + elfcpp::Swap<32, big_endian>::writeval(iview, addi_3_3); + r_type = elfcpp::R_POWERPC_TPREL16_LO; + view += d_offset; + value = dtp_offset; + } this->skip_next_tls_get_addr_call(); - r_type = elfcpp::R_POWERPC_TPREL16_LO; - view += d_offset; - value = dtp_offset; } } else if (r_type == elfcpp::R_POWERPC_TLS) @@ -8766,24 +10595,68 @@ Target_powerpc::Relocate::relocate( const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); if (tls_type == tls::TLSOPT_TO_LE) { - Insn* iview = reinterpret_cast(view); + Address roff = rela.get_r_offset() & 3; + Insn* iview = reinterpret_cast(view - roff); Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); unsigned int reg = size == 32 ? 2 : 13; insn = at_tls_transform(insn, reg); gold_assert(insn != 0); - elfcpp::Swap<32, big_endian>::writeval(iview, insn); - r_type = elfcpp::R_POWERPC_TPREL16_LO; - view += d_offset; - value = psymval->value(object, rela.get_r_addend()); + if (roff == 0) + { + elfcpp::Swap<32, big_endian>::writeval(iview, insn); + r_type = elfcpp::R_POWERPC_TPREL16_LO; + view += d_offset; + value = psymval->value(object, rela.get_r_addend()); + } + else if (roff == 1) + { + // For pcrel IE to LE we already have the full offset + // and thus don't need an addi here. A nop or mr will do. + if ((insn & (0x3f << 26)) == 14 << 26) + { + // Extract regs from addi rt,ra,si. + unsigned int rt = (insn >> 21) & 0x1f; + unsigned int ra = (insn >> 16) & 0x1f; + if (rt == ra) + insn = nop; + else + { + // Build or ra,rs,rb with rb==rs, ie. mr ra,rs. + insn = (rt << 16) | (ra << 21) | (ra << 11); + insn |= (31u << 26) | (444u << 1); + } + } + elfcpp::Swap<32, big_endian>::writeval(iview, insn); + r_type = elfcpp::R_POWERPC_NONE; + } } } else if (!has_stub_value) { + if (!has_plt_offset && (r_type == elfcpp::R_POWERPC_PLTCALL + || r_type == elfcpp::R_PPC64_PLTCALL_NOTOC)) + { + // PLTCALL without plt entry => convert to direct call + Insn* iview = reinterpret_cast(view); + Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); + insn = (insn & 1) | b; + elfcpp::Swap<32, big_endian>::writeval(iview, insn); + if (size == 32) + r_type = elfcpp::R_PPC_PLTREL24; + else if (r_type == elfcpp::R_PPC64_PLTCALL_NOTOC) + r_type = elfcpp::R_PPC64_REL24_NOTOC; + else + r_type = elfcpp::R_POWERPC_REL24; + } Address addend = 0; - if (!(size == 32 && r_type == elfcpp::R_PPC_PLTREL24)) + if (!(size == 32 + && (r_type == elfcpp::R_PPC_PLTREL24 + || r_type == elfcpp::R_POWERPC_PLT16_LO + || r_type == elfcpp::R_POWERPC_PLT16_HI + || r_type == elfcpp::R_POWERPC_PLT16_HA))) addend = rela.get_r_addend(); value = psymval->value(object, addend); - if (size == 64 && is_branch_reloc(r_type)) + if (size == 64 && is_branch_reloc(r_type)) { if (target->abiversion() >= 2) { @@ -8799,19 +10672,29 @@ Target_powerpc::Relocate::relocate( &value, &dest_shndx); } } - Address max_branch_offset = max_branch_delta(r_type); + Address max_branch_offset = max_branch_delta(r_type); if (max_branch_offset != 0 - && value - address + max_branch_offset >= 2 * max_branch_offset) + && (value - address + max_branch_offset >= 2 * max_branch_offset + || (size == 64 + && r_type == elfcpp::R_PPC64_REL24_NOTOC + && (gsym != NULL + ? object->ppc64_needs_toc(gsym) + : object->ppc64_needs_toc(r_sym))))) { Stub_table* stub_table = object->stub_table(relinfo->data_shndx); if (stub_table != NULL) { - Address off = stub_table->find_long_branch_entry(object, value); - if (off != invalid_address) + const typename Stub_table::Branch_stub_ent* ent + = stub_table->find_long_branch_entry(object, value); + if (ent != NULL) { - value = (stub_table->stub_address() + stub_table->plt_size() - + off); + if (ent->save_res_) + value = (value - target->savres_section()->address() + + stub_table->branch_size()); + else + value = (stub_table->stub_address() + stub_table->plt_size() + + ent->off_); has_stub_value = true; } } @@ -8820,6 +10703,10 @@ Target_powerpc::Relocate::relocate( switch (r_type) { + case elfcpp::R_PPC64_REL24_NOTOC: + if (size == 32) + break; + // Fall through. case elfcpp::R_PPC64_REL64: case elfcpp::R_POWERPC_REL32: case elfcpp::R_POWERPC_REL24: @@ -8830,9 +10717,28 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_POWERPC_REL16_HI: case elfcpp::R_POWERPC_REL16_HA: case elfcpp::R_POWERPC_REL16DX_HA: + case elfcpp::R_PPC64_REL16_HIGH: + case elfcpp::R_PPC64_REL16_HIGHA: + case elfcpp::R_PPC64_REL16_HIGHER: + case elfcpp::R_PPC64_REL16_HIGHERA: + case elfcpp::R_PPC64_REL16_HIGHEST: + case elfcpp::R_PPC64_REL16_HIGHESTA: case elfcpp::R_POWERPC_REL14: case elfcpp::R_POWERPC_REL14_BRTAKEN: case elfcpp::R_POWERPC_REL14_BRNTAKEN: + case elfcpp::R_PPC64_PCREL34: + case elfcpp::R_PPC64_GOT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: + case elfcpp::R_PPC64_PCREL28: + case elfcpp::R_PPC64_GOT_TLSGD34: + case elfcpp::R_PPC64_GOT_TLSLD34: + case elfcpp::R_PPC64_GOT_TPREL34: + case elfcpp::R_PPC64_GOT_DTPREL34: + case elfcpp::R_PPC64_REL16_HIGHER34: + case elfcpp::R_PPC64_REL16_HIGHERA34: + case elfcpp::R_PPC64_REL16_HIGHEST34: + case elfcpp::R_PPC64_REL16_HIGHESTA34: value -= address; break; @@ -8874,6 +10780,7 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_PPC64_TPREL16_HIGHERA: case elfcpp::R_PPC64_TPREL16_HIGHEST: case elfcpp::R_PPC64_TPREL16_HIGHESTA: + case elfcpp::R_PPC64_TPREL34: // tls symbol values are relative to tls_segment()->vaddr() value -= tp_offset; break; @@ -8896,6 +10803,7 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_POWERPC_DTPREL: case elfcpp::R_PPC64_DTPREL16_HIGH: case elfcpp::R_PPC64_DTPREL16_HIGHA: + case elfcpp::R_PPC64_DTPREL34: // tls symbol values are relative to tls_segment()->vaddr() value -= dtp_offset; break; @@ -8947,12 +10855,37 @@ Target_powerpc::Relocate::relocate( } break; + case elfcpp::R_POWERPC_PLT16_HA: + if (size == 32 + && !parameters->options().output_is_position_independent()) + { + Insn* iview = reinterpret_cast(view - d_offset); + Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); + + // Convert addis to lis. + if ((insn & (0x3f << 26)) == 15u << 26 + && (insn & (0x1f << 16)) != 0) + { + insn &= ~(0x1f << 16); + elfcpp::Swap<32, big_endian>::writeval(iview, insn); + } + } + break; + default: break; } - if (size == 64) + if (size == 64 + && (gsym + ? relative_value_is_known(gsym) + : relative_value_is_known(psymval))) { + Insn* iview; + Insn* iview2; + Insn insn; + uint64_t pinsn, pinsn2; + switch (r_type) { default: @@ -8965,12 +10898,6 @@ Target_powerpc::Relocate::relocate( // and // addis ra,r2,0; addi rb,ra,x@toc@l; // to nop; addi rb,r2,x@toc; - // FIXME: the @got sequence shown above is not yet - // optimized. Note that gcc as of 2017-01-07 doesn't use - // the ELF @got relocs except for TLS, instead using the - // PowerOpen variant of a compiler managed GOT (called TOC). - // The PowerOpen TOC sequence equivalent to the first - // example is optimized. case elfcpp::R_POWERPC_GOT_TLSLD16_HA: case elfcpp::R_POWERPC_GOT_TLSGD16_HA: case elfcpp::R_POWERPC_GOT_TPREL16_HA: @@ -8979,10 +10906,14 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_PPC64_TOC16_HA: if (parameters->options().toc_optimize()) { - Insn* iview = reinterpret_cast(view - d_offset); - Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); - if (r_type == elfcpp::R_PPC64_TOC16_HA - && object->make_toc_relative(target, &value)) + iview = reinterpret_cast(view - d_offset); + insn = elfcpp::Swap<32, big_endian>::readval(iview); + if ((r_type == elfcpp::R_PPC64_TOC16_HA + && object->make_toc_relative(target, &value)) + || (r_type == elfcpp::R_POWERPC_GOT16_HA + && object->make_got_relative(target, psymval, + rela.get_r_addend(), + &value))) { gold_assert((insn & ((0x3f << 26) | 0x1f << 16)) == ((15u << 26) | (2 << 16))); @@ -9007,11 +10938,15 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_PPC64_TOC16_LO_DS: if (parameters->options().toc_optimize()) { - Insn* iview = reinterpret_cast(view - d_offset); - Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); + iview = reinterpret_cast(view - d_offset); + insn = elfcpp::Swap<32, big_endian>::readval(iview); bool changed = false; - if (r_type == elfcpp::R_PPC64_TOC16_LO_DS - && object->make_toc_relative(target, &value)) + if ((r_type == elfcpp::R_PPC64_TOC16_LO_DS + && object->make_toc_relative(target, &value)) + || (r_type == elfcpp::R_PPC64_GOT16_LO_DS + && object->make_got_relative(target, psymval, + rela.get_r_addend(), + &value))) { gold_assert ((insn & (0x3f << 26)) == 58u << 26 /* ld */); insn ^= (14u << 26) ^ (58u << 26); @@ -9039,6 +10974,77 @@ Target_powerpc::Relocate::relocate( } break; + case elfcpp::R_PPC64_GOT_PCREL34: + if (parameters->options().toc_optimize()) + { + iview = reinterpret_cast(view); + pinsn = elfcpp::Swap<32, big_endian>::readval(iview); + pinsn <<= 32; + pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); + if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) + != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) + break; + + Address relval = psymval->value(object, rela.get_r_addend()); + relval -= address; + if (relval + (1ULL << 33) < 1ULL << 34) + { + value = relval; + // Replace with paddi + pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); + elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); + elfcpp::Swap<32, big_endian>::writeval(iview + 1, + pinsn & 0xffffffff); + goto pcrelopt; + } + } + break; + + case elfcpp::R_PPC64_PCREL34: + { + iview = reinterpret_cast(view); + pinsn = elfcpp::Swap<32, big_endian>::readval(iview); + pinsn <<= 32; + pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); + if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) + != ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) + | (14ULL << 26) /* paddi */)) + break; + + pcrelopt: + const int reloc_size = elfcpp::Elf_sizes::rela_size; + elfcpp::Shdr shdr(relinfo->reloc_shdr); + size_t reloc_count = shdr.get_sh_size() / reloc_size; + if (relnum >= reloc_count - 1) + break; + + Reltype next_rela(preloc + reloc_size); + if ((elfcpp::elf_r_type(next_rela.get_r_info()) + != elfcpp::R_PPC64_PCREL_OPT) + || next_rela.get_r_offset() != rela.get_r_offset()) + break; + + Address off = next_rela.get_r_addend(); + if (off == 0) + off = 8; // zero means next insn. + if (off + rela.get_r_offset() + 4 > view_size) + break; + + iview2 = reinterpret_cast(view + off); + pinsn2 = elfcpp::Swap<32, big_endian>::readval(iview2); + pinsn2 <<= 32; + if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) + break; + if (xlate_pcrel_opt(&pinsn, &pinsn2)) + { + elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); + elfcpp::Swap<32, big_endian>::writeval(iview + 1, + pinsn & 0xffffffff); + elfcpp::Swap<32, big_endian>::writeval(iview2, pinsn2 >> 32); + } + } + break; + case elfcpp::R_POWERPC_TPREL16_HA: if (parameters->options().tls_optimize() && value + 0x8000 < 0x10000) { @@ -9122,7 +11128,7 @@ Target_powerpc::Relocate::relocate( // addi 2,2,.TOC.@l // if .TOC. is in range. */ if (value + address - 4 + 0x80008000 <= 0xffffffff - && relnum != 0 + && relnum + 1 > 1 && preloc != NULL && target->abiversion() >= 2 && !parameters->options().output_is_position_independent() @@ -9236,6 +11242,10 @@ Target_powerpc::Relocate::relocate( overflow = Reloc::CHECK_LOW_INSN; break; + case elfcpp::R_PPC64_REL24_NOTOC: + if (size == 32) + break; + // Fall through. case elfcpp::R_POWERPC_ADDR24: case elfcpp::R_POWERPC_ADDR14: case elfcpp::R_POWERPC_ADDR14_BRTAKEN: @@ -9252,6 +11262,19 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_POWERPC_REL14: case elfcpp::R_POWERPC_REL14_BRTAKEN: case elfcpp::R_POWERPC_REL14_BRNTAKEN: + case elfcpp::R_PPC64_D34: + case elfcpp::R_PPC64_PCREL34: + case elfcpp::R_PPC64_GOT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: + case elfcpp::R_PPC64_D28: + case elfcpp::R_PPC64_PCREL28: + case elfcpp::R_PPC64_TPREL34: + case elfcpp::R_PPC64_DTPREL34: + case elfcpp::R_PPC64_GOT_TLSGD34: + case elfcpp::R_PPC64_GOT_TLSLD34: + case elfcpp::R_PPC64_GOT_TPREL34: + case elfcpp::R_PPC64_GOT_DTPREL34: overflow = Reloc::CHECK_SIGNED; break; } @@ -9287,6 +11310,11 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_POWERPC_TLS: case elfcpp::R_POWERPC_GNU_VTINHERIT: case elfcpp::R_POWERPC_GNU_VTENTRY: + case elfcpp::R_POWERPC_PLTSEQ: + case elfcpp::R_POWERPC_PLTCALL: + case elfcpp::R_PPC64_PLTSEQ_NOTOC: + case elfcpp::R_PPC64_PLTCALL_NOTOC: + case elfcpp::R_PPC64_PCREL_OPT: break; case elfcpp::R_PPC64_ADDR64: @@ -9317,6 +11345,10 @@ Target_powerpc::Relocate::relocate( status = Reloc::addr32_u(view, value, overflow); break; + case elfcpp::R_PPC64_REL24_NOTOC: + if (size == 32) + goto unsupp; // R_PPC_EMB_RELSDA + // Fall through. case elfcpp::R_POWERPC_ADDR24: case elfcpp::R_POWERPC_REL24: case elfcpp::R_PPC_PLTREL24: @@ -9348,6 +11380,7 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_POWERPC_REL16_LO: case elfcpp::R_PPC64_TOC16_LO: case elfcpp::R_POWERPC_GOT16_LO: + case elfcpp::R_POWERPC_PLT16_LO: case elfcpp::R_POWERPC_SECTOFF_LO: case elfcpp::R_POWERPC_TPREL16_LO: case elfcpp::R_POWERPC_DTPREL16_LO: @@ -9372,8 +11405,10 @@ Target_powerpc::Relocate::relocate( // Fall through. case elfcpp::R_POWERPC_ADDR16_HI: case elfcpp::R_POWERPC_REL16_HI: + case elfcpp::R_PPC64_REL16_HIGH: case elfcpp::R_PPC64_TOC16_HI: case elfcpp::R_POWERPC_GOT16_HI: + case elfcpp::R_POWERPC_PLT16_HI: case elfcpp::R_POWERPC_SECTOFF_HI: case elfcpp::R_POWERPC_TPREL16_HI: case elfcpp::R_POWERPC_DTPREL16_HI: @@ -9393,8 +11428,10 @@ Target_powerpc::Relocate::relocate( // Fall through. case elfcpp::R_POWERPC_ADDR16_HA: case elfcpp::R_POWERPC_REL16_HA: + case elfcpp::R_PPC64_REL16_HIGHA: case elfcpp::R_PPC64_TOC16_HA: case elfcpp::R_POWERPC_GOT16_HA: + case elfcpp::R_POWERPC_PLT16_HA: case elfcpp::R_POWERPC_SECTOFF_HA: case elfcpp::R_POWERPC_TPREL16_HA: case elfcpp::R_POWERPC_DTPREL16_HA: @@ -9415,6 +11452,7 @@ Target_powerpc::Relocate::relocate( goto unsupp; // Fall through. case elfcpp::R_PPC64_ADDR16_HIGHER: + case elfcpp::R_PPC64_REL16_HIGHER: case elfcpp::R_PPC64_TPREL16_HIGHER: Reloc::addr16_hi2(view, value); break; @@ -9425,6 +11463,7 @@ Target_powerpc::Relocate::relocate( goto unsupp; // Fall through. case elfcpp::R_PPC64_ADDR16_HIGHERA: + case elfcpp::R_PPC64_REL16_HIGHERA: case elfcpp::R_PPC64_TPREL16_HIGHERA: Reloc::addr16_ha2(view, value); break; @@ -9435,6 +11474,7 @@ Target_powerpc::Relocate::relocate( goto unsupp; // Fall through. case elfcpp::R_PPC64_ADDR16_HIGHEST: + case elfcpp::R_PPC64_REL16_HIGHEST: case elfcpp::R_PPC64_TPREL16_HIGHEST: Reloc::addr16_hi3(view, value); break; @@ -9445,6 +11485,7 @@ Target_powerpc::Relocate::relocate( goto unsupp; // Fall through. case elfcpp::R_PPC64_ADDR16_HIGHESTA: + case elfcpp::R_PPC64_REL16_HIGHESTA: case elfcpp::R_PPC64_TPREL16_HIGHESTA: Reloc::addr16_ha3(view, value); break; @@ -9467,6 +11508,7 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_PPC64_TOC16_LO_DS: case elfcpp::R_PPC64_GOT16_DS: case elfcpp::R_PPC64_GOT16_LO_DS: + case elfcpp::R_PPC64_PLT16_LO_DS: case elfcpp::R_PPC64_SECTOFF_DS: case elfcpp::R_PPC64_SECTOFF_LO_DS: maybe_dq_reloc = true; @@ -9523,11 +11565,72 @@ Target_powerpc::Relocate::relocate( // R_PPC64_TLSGD, R_PPC64_TLSLD break; + case elfcpp::R_PPC64_D34: + case elfcpp::R_PPC64_D34_LO: + case elfcpp::R_PPC64_PCREL34: + case elfcpp::R_PPC64_GOT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34: + case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: + case elfcpp::R_PPC64_TPREL34: + case elfcpp::R_PPC64_DTPREL34: + case elfcpp::R_PPC64_GOT_TLSGD34: + case elfcpp::R_PPC64_GOT_TLSLD34: + case elfcpp::R_PPC64_GOT_TPREL34: + case elfcpp::R_PPC64_GOT_DTPREL34: + if (size == 32) + goto unsupp; + status = Reloc::addr34(view, value, overflow); + break; + + case elfcpp::R_PPC64_D34_HI30: + if (size == 32) + goto unsupp; + Reloc::addr34_hi(view, value); + break; + + case elfcpp::R_PPC64_D34_HA30: + if (size == 32) + goto unsupp; + Reloc::addr34_ha(view, value); + break; + + case elfcpp::R_PPC64_D28: + case elfcpp::R_PPC64_PCREL28: + if (size == 32) + goto unsupp; + status = Reloc::addr28(view, value, overflow); + break; + + case elfcpp::R_PPC64_ADDR16_HIGHER34: + case elfcpp::R_PPC64_REL16_HIGHER34: + if (size == 32) + goto unsupp; + Reloc::addr16_higher34(view, value); + break; + + case elfcpp::R_PPC64_ADDR16_HIGHERA34: + case elfcpp::R_PPC64_REL16_HIGHERA34: + if (size == 32) + goto unsupp; + Reloc::addr16_highera34(view, value); + break; + + case elfcpp::R_PPC64_ADDR16_HIGHEST34: + case elfcpp::R_PPC64_REL16_HIGHEST34: + if (size == 32) + goto unsupp; + Reloc::addr16_highest34(view, value); + break; + + case elfcpp::R_PPC64_ADDR16_HIGHESTA34: + case elfcpp::R_PPC64_REL16_HIGHESTA34: + if (size == 32) + goto unsupp; + Reloc::addr16_highesta34(view, value); + break; + case elfcpp::R_POWERPC_PLT32: case elfcpp::R_POWERPC_PLTREL32: - case elfcpp::R_POWERPC_PLT16_LO: - case elfcpp::R_POWERPC_PLT16_HI: - case elfcpp::R_POWERPC_PLT16_HA: case elfcpp::R_PPC_SDAREL16: case elfcpp::R_POWERPC_ADDR30: case elfcpp::R_PPC64_PLT64: @@ -9536,10 +11639,8 @@ Target_powerpc::Relocate::relocate( case elfcpp::R_PPC64_PLTGOT16_LO: case elfcpp::R_PPC64_PLTGOT16_HI: case elfcpp::R_PPC64_PLTGOT16_HA: - case elfcpp::R_PPC64_PLT16_LO_DS: case elfcpp::R_PPC64_PLTGOT16_DS: case elfcpp::R_PPC64_PLTGOT16_LO_DS: - case elfcpp::R_PPC_EMB_RELSDA: case elfcpp::R_PPC_TOC16: default: unsupp: @@ -9572,7 +11673,7 @@ Target_powerpc::Relocate::relocate( && (has_stub_value || !(gsym != NULL && gsym->is_undefined() - && is_branch_reloc(r_type)))) + && is_branch_reloc(r_type)))) { gold_error_at_location(relinfo, relnum, rela.get_r_offset(), _("relocation overflow")); @@ -9663,7 +11764,11 @@ public: inline Relocatable_relocs::Reloc_strategy global_strategy(unsigned int r_type, Relobj*, unsigned int) { - if (r_type == elfcpp::R_PPC_PLTREL24) + if (size == 32 + && (r_type == elfcpp::R_PPC_PLTREL24 + || r_type == elfcpp::R_POWERPC_PLT16_LO + || r_type == elfcpp::R_POWERPC_PLT16_HI + || r_type == elfcpp::R_POWERPC_PLT16_HA)) return Relocatable_relocs::RELOC_SPECIAL; return Relocatable_relocs::RELOC_COPY; }