diff options
Diffstat (limited to 'gold')
| -rw-r--r-- | gold/ChangeLog | 37 | ||||
| -rw-r--r-- | gold/powerpc.cc | 970 |
2 files changed, 746 insertions, 261 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog index b024dfa..e8bfea9 100644 --- a/gold/ChangeLog +++ b/gold/ChangeLog @@ -1,3 +1,40 @@ +2019-07-13 Alan Modra <amodra@gmail.com> + + * powerpc.cc (Target_powerpc::maybe_skip_tls_get_addr_call): Handle + notoc calls. + (is_branch_reloc): Template on size. Return true for REL24_NOTOC. + Update all callers. + (max_branch_delta): Likewise. + (Target_powerpc::Branch_info::make_stub): Add a stub for notoc + calls to functions needing a valid toc pointer. + (Target_powerpc::do_relax): Layout stubs again if any need resize. + (add_12_11_12, addi_12_11, addis_12_11, ldx_12_11_12, ori_12_12_0), + (oris_12_12_0, sldi_12_12_32): Define. + (Stub_table::Plt_stub_ent): Add notoc_ and iter_ fields. + (Stub_table::Branch_stub_key, Branch_stub_key_hash): Rename from + Branch_stub_ent and Branch_stub_ent hash. Remove save_res_ from key. + (Stub_table::Branch_stub_ent): New struct. + (class Stub_table): Add need_resize and resizing vars. + (Stub_table::need_resize, branch_size): New accessors. + (Stub_table::set_resizing): New function. + (Stub_table::add_plt_call_entry): Handle notoc calls and resizing + on seeing such or a tocsave stubs after a normal stub using the + same sym. + (Stub_table::add_long_branch_entry): Similarly. + (Stub_table::find_long_branch_entry): Return a Branch_stub_ent*. + (Stub_table::define_stub_syms): Adjust + (Stub_table::build_tls_opt_head, build_tls_opt_tail): New functions. + (build_notoc_offset): New function. + (Stub_table::plt_call_size): Move out of line. Handle notoc calls. + (Stub_table::branch_stub_size): Similarly. + (Stub_table::do_write): Separate loop for ELFv2 stubs, handling + notoc calls. Simplify ELFv1 loop. Output notoc branch stubs. + Use build_tls_opt_head and build_tls_opt_tail. + (Target_powerpc::Scan::get_reference_flags): Handle REL24_NOTOC. + (Target_powerpc::Scan::reloc_needs_plt_for_ifunc): Likewise, + and PLTSEQ_NOTOC and PLTCALL_NOTOC. + (Target_powerpc::Scan::local, global, relocate): Likewise. + 2019-06-28 Alan Modra <amodra@gmail.com> * powerpc.cc (Target_powerpc::Relocate::relocate): Don't look diff --git a/gold/powerpc.cc b/gold/powerpc.cc index 6f0be09..1b62f55 100644 --- a/gold/powerpc.cc +++ b/gold/powerpc.cc @@ -79,6 +79,7 @@ struct Stub_table_owner const Output_section::Input_section* owner; }; +template<int size> inline bool is_branch_reloc(unsigned int); template<int size> @@ -390,6 +391,14 @@ 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 @@ -1237,14 +1246,18 @@ class Target_powerpc : public Sized_target<size, big_endian> maybe_skip_tls_get_addr_call(Target_powerpc<size, big_endian>* target, unsigned int r_type, const Symbol* gsym) { - bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 - || r_type == elfcpp::R_PPC_PLTREL24 - || is_plt16_reloc<size>(r_type) - || r_type == elfcpp::R_POWERPC_PLTSEQ - || r_type == elfcpp::R_POWERPC_PLTCALL) - && 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<size>(r_type) + || 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) @@ -1262,7 +1275,7 @@ class Target_powerpc : public Sized_target<size, big_endian> // 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, @@ -1328,7 +1341,7 @@ class Target_powerpc : public Sized_target<size, big_endian> } // 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<size>(r_type); } inline bool @@ -1349,7 +1362,7 @@ class Target_powerpc : public Sized_target<size, big_endian> if (ppcobj->abiversion() == 1) return false; } - return !is_branch_reloc(r_type); + return !is_branch_reloc<size>(r_type); } static bool @@ -1799,10 +1812,12 @@ Target::Target_info Target_powerpc<64, false>::powerpc_info = elfcpp::SHT_PROGBITS, // unwind_section_type }; +template<int size> 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 @@ -3268,6 +3283,7 @@ Target_powerpc<size, big_endian>::group_sections(Layout* layout, } } +template<int size> static unsigned long max_branch_delta (unsigned int r_type) { @@ -3276,6 +3292,7 @@ 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; @@ -3344,7 +3361,7 @@ Target_powerpc<size, big_endian>::Branch_info::make_stub( && gsym != NULL && target->abiversion() >= 2 && !parameters->options().output_is_position_independent() - && !is_branch_reloc(this->r_type_)) + && !is_branch_reloc<size>(this->r_type_)) target->glink_section()->add_global_entry(gsym); else { @@ -3352,7 +3369,7 @@ Target_powerpc<size, big_endian>::Branch_info::make_stub( && !(size == 32 && gsym != NULL && !parameters->options().output_is_position_independent() - && !is_branch_reloc(this->r_type_))) + && !is_branch_reloc<size>(this->r_type_))) stub_table = this->object_->stub_table(this->shndx_); if (stub_table == NULL) { @@ -3380,7 +3397,7 @@ Target_powerpc<size, big_endian>::Branch_info::make_stub( } else { - Address max_branch_offset = max_branch_delta(this->r_type_); + Address max_branch_offset = max_branch_delta<size>(this->r_type_); if (max_branch_offset == 0) return true; Address from = this->object_->get_output_section_offset(this->shndx_); @@ -3448,7 +3465,12 @@ Target_powerpc<size, big_endian>::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) { @@ -3620,6 +3642,40 @@ Target_powerpc<size, big_endian>::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(); @@ -3987,11 +4043,13 @@ 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; @@ -4001,6 +4059,7 @@ 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; @@ -4029,6 +4088,7 @@ 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_12_0 = 0x39800000; @@ -4057,6 +4117,9 @@ 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_12_12_0 = 0x618c0000; +static const uint32_t oris_12_12_0 = 0x658c0000; +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; @@ -4443,14 +4506,27 @@ 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<size>::Elf_Addr Address; static const Address invalid_address = static_cast<Address>(0) - 1; @@ -4465,8 +4541,8 @@ 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), tls_get_addr_opt_bctrl_(-1u), plt_fde_len_(0) { this->set_output_section(output_section); @@ -4517,14 +4593,14 @@ class Stub_table : public Output_relaxed_input_section add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, unsigned int, Address, Address, bool); - Address + const Branch_stub_ent* find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, 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<size>(r_type); if (max_branch_offset == 0) return true; gold_assert(from != invalid_address); @@ -4547,6 +4623,23 @@ 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) { @@ -4589,6 +4682,10 @@ 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; } @@ -4648,10 +4745,10 @@ class Stub_table : public Output_relaxed_input_section class Plt_stub_key_hash; typedef Unordered_map<Plt_stub_key, Plt_stub_ent, Plt_stub_key_hash> Plt_stub_entries; - class Branch_stub_ent; - class Branch_stub_ent_hash; - typedef Unordered_map<Branch_stub_ent, unsigned int, - Branch_stub_ent_hash> Branch_stub_entries; + class Branch_stub_key; + class Branch_stub_key_hash; + typedef Unordered_map<Branch_stub_key, Branch_stub_ent, + Branch_stub_key_hash> Branch_stub_entries; // Alignment of stub section. unsigned int @@ -4680,38 +4777,7 @@ class Stub_table : public Output_relaxed_input_section // 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)); - } - - const Output_data_plt_powerpc<size, big_endian>* plt; - Address plt_addr = this->plt_off(p, &plt); - plt_addr += plt->address(); - Address got_addr = this->targ_->got_section()->output_section()->address(); - const Powerpc_relobj<size, big_endian>* ppcobj = static_cast - <const Powerpc_relobj<size, big_endian>*>(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 @@ -4722,16 +4788,16 @@ 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); @@ -4812,18 +4878,17 @@ 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<size, big_endian>* obj, - Address to, bool save_res) - : dest_(to), toc_base_off_(0), save_res_(save_res) + Branch_stub_key(const Powerpc_relobj<size, big_endian>* 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 @@ -4832,14 +4897,13 @@ 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. @@ -4862,6 +4926,10 @@ 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. @@ -4888,15 +4956,35 @@ Stub_table<size, big_endian>::add_plt_call_entry( Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); std::pair<typename Plt_stub_entries::iterator, bool> 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 (r_type == elfcpp::R_PPC64_REL24_NOTOC) + { + if (!p.second && !p.first->second.notoc_) + 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_) + { + 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(); @@ -4904,11 +4992,7 @@ Stub_table<size, big_endian>::add_plt_call_entry( } 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<int size, bool big_endian> @@ -4925,22 +5009,38 @@ Stub_table<size, big_endian>::add_plt_call_entry( Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); std::pair<typename Plt_stub_entries::iterator, bool> 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->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. @@ -5011,41 +5111,52 @@ Stub_table<size, big_endian>::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<typename Branch_stub_entries::iterator, bool> 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<int size, bool big_endian> -typename Stub_table<size, big_endian>::Address +const typename Stub_table<size, big_endian>::Branch_stub_ent* Stub_table<size, big_endian>::find_long_branch_entry( const Powerpc_relobj<size, big_endian>* 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. @@ -5374,19 +5485,312 @@ Stub_table<size, big_endian>::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<unsigned long long>(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<int size, bool big_endian> +bool +Stub_table<size, big_endian>::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<big_endian>(p, ld_11_3 + 0); + p += 4; + write_insn<big_endian>(p, ld_12_3 + 8); + p += 4; + write_insn<big_endian>(p, mr_0_3); + p += 4; + write_insn<big_endian>(p, cmpdi_11_0); + p += 4; + write_insn<big_endian>(p, add_3_12_13); + p += 4; + write_insn<big_endian>(p, beqlr); + p += 4; + write_insn<big_endian>(p, mr_3_0); + p += 4; + if (cs->second.r2save_ && !cs->second.localentry0_) + { + write_insn<big_endian>(p, mflr_11); + p += 4; + write_insn<big_endian>(p, (std_11_1 + this->targ_->stk_linker())); + p += 4; + } + } + else + { + write_insn<big_endian>(p, lwz_11_3 + 0); + p += 4; + write_insn<big_endian>(p, lwz_12_3 + 4); + p += 4; + write_insn<big_endian>(p, mr_0_3); + p += 4; + write_insn<big_endian>(p, cmpwi_11_0); + p += 4; + write_insn<big_endian>(p, add_3_12_2); + p += 4; + write_insn<big_endian>(p, beqlr); + p += 4; + write_insn<big_endian>(p, mr_3_0); + p += 4; + write_insn<big_endian>(p, nop); + p += 4; + } + *pp = p; + return true; + } + return false; +} + +// Emit the tail of a __tls_get_addr_opt plt call stub. + +template<int size, bool big_endian> +bool +Stub_table<size, big_endian>::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<big_endian>(p, bctrl); + p += 4; + write_insn<big_endian>(p, ld_2_1 + this->targ_->stk_toc()); + p += 4; + write_insn<big_endian>(p, ld_11_1 + this->targ_->stk_linker()); + p += 4; + write_insn<big_endian>(p, mtlr_11); + p += 4; + write_insn<big_endian>(p, blr); + return true; + } + return false; +} + +// 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<bool big_endian> +static unsigned char* +build_notoc_offset(unsigned char* p, uint64_t off, bool load) +{ + write_insn<big_endian>(p, mflr_12); + p += 4; + write_insn<big_endian>(p, bcl_20_31); + p += 4; + write_insn<big_endian>(p, mflr_11); + p += 4; + write_insn<big_endian>(p, mtlr_12); + p += 4; + if (off + 0x8000 < 0x10000) + { + if (load) + write_insn<big_endian>(p, ld_12_11 + l(off)); + else + write_insn<big_endian>(p, addi_12_11 + l(off)); + } + else if (off + 0x80008000ULL < 0x100000000ULL) + { + write_insn<big_endian>(p, addis_12_11 + ha(off)); + p += 4; + if (load) + write_insn<big_endian>(p, ld_12_12 + l(off)); + else + write_insn<big_endian>(p, addi_12_12 + l(off)); + } + else + { + if (off + 0x800000000000ULL < 0x1000000000000ULL) + { + write_insn<big_endian>(p, li_12_0 + ((off >> 32) & 0xffff)); + p += 4; + } + else + { + write_insn<big_endian>(p, lis_12 + ((off >> 48) & 0xffff)); + p += 4; + if (((off >> 32) & 0xffff) != 0) + { + write_insn<big_endian>(p, ori_12_12_0 + ((off >> 32) & 0xffff)); + p += 4; + } + } + if (((off >> 32) & 0xffffffffULL) != 0) + { + write_insn<big_endian>(p, sldi_12_12_32); + p += 4; + } + if (hi(off) != 0) + { + write_insn<big_endian>(p, oris_12_12_0 + hi(off)); + p += 4; + } + if (l(off) != 0) + { + write_insn<big_endian>(p, ori_12_12_0 + l(off)); + p += 4; + } + if (load) + write_insn<big_endian>(p, ldx_12_11_12); + else + write_insn<big_endian>(p, add_12_11_12); + } + p += 4; + return p; +} + +// Size of a given plt call stub. + +template<int size, bool big_endian> +unsigned int +Stub_table<size, big_endian>::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<size, big_endian>* 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 (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<size, big_endian>* ppcobj = static_cast + <const Powerpc_relobj<size, big_endian>*>(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<int size, bool big_endian> +unsigned int +Stub_table<size, big_endian>::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_) + { + 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; + *need_lt = true; + return 16; +} + template<int size, bool big_endian> void Stub_table<size, big_endian>::plt_error(const Plt_stub_key& p) @@ -5423,9 +5827,64 @@ Stub_table<size, big_endian>::do_write(Output_file* of) = 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) { - // 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) + { + const Output_data_plt_powerpc<size, big_endian>* 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<big_endian>(p, std_2_1 + this->targ_->stk_toc()); + p += 4; + } + if (cs->second.notoc_) + { + Address from = this->stub_address() + (p - oview) + 8; + Address off = plt_addr - from; + p = build_notoc_offset<big_endian>(p, off, true); + } + else + { + const Powerpc_relobj<size, big_endian>* ppcobj = static_cast + <const Powerpc_relobj<size, big_endian>*>(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<big_endian>(p, addis_12_2 + ha(off)); + p += 4; + write_insn<big_endian>(p, ld_12_12 + l(off)); + p += 4; + } + else + { + write_insn<big_endian>(p, ld_12_2 + l(off)); + p += 4; + } + } + write_insn<big_endian>(p, mtctr_12); + p += 4; + if (!this->build_tls_opt_tail(p, cs)) + write_insn<big_endian>(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(); @@ -5439,14 +5898,12 @@ Stub_table<size, big_endian>::do_write(Output_file* of) Address got_addr = got_os_addr + ppcobj->toc_base_offset(); Address off = plt_addr - got_addr; - if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) + 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) @@ -5472,94 +5929,47 @@ Stub_table<size, big_endian>::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<big_endian>(p, ld_11_3 + 0); + write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); p += 4; - write_insn<big_endian>(p, ld_12_3 + 8); - p += 4; - write_insn<big_endian>(p, mr_0_3); - p += 4; - write_insn<big_endian>(p, cmpdi_11_0); - p += 4; - write_insn<big_endian>(p, add_3_12_13); - p += 4; - write_insn<big_endian>(p, beqlr); - p += 4; - write_insn<big_endian>(p, mr_3_0); - p += 4; - if (!cs->second.localentry0_) - { - write_insn<big_endian>(p, mflr_11); - p += 4; - write_insn<big_endian>(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<big_endian>(p, - std_2_1 + this->targ_->stk_toc()); - p += 4; - } - if (plt_load_toc) + write_insn<big_endian>(p, addis_11_2 + ha(off)); + p += 4; + write_insn<big_endian>(p, ld_12_11 + l(off)); + p += 4; + if (ha(off + 8 + 8 * static_chain) != ha(off)) { - write_insn<big_endian>(p, addis_11_2 + ha(off)); - p += 4; - write_insn<big_endian>(p, ld_12_11 + l(off)); + write_insn<big_endian>(p, addi_11_11 + l(off)); p += 4; + off = 0; } - else + write_insn<big_endian>(p, mtctr_12); + p += 4; + if (use_fake_dep) { - write_insn<big_endian>(p, addis_12_2 + ha(off)); + write_insn<big_endian>(p, xor_2_12_12); p += 4; - write_insn<big_endian>(p, ld_12_12 + l(off)); + write_insn<big_endian>(p, add_11_11_2); p += 4; } - if (plt_load_toc - && ha(off + 8 + 8 * static_chain) != ha(off)) - { - write_insn<big_endian>(p, addi_11_11 + l(off)); - p += 4; - off = 0; - } - write_insn<big_endian>(p, mtctr_12); + write_insn<big_endian>(p, ld_2_11 + l(off + 8)); p += 4; - if (plt_load_toc) + if (static_chain) { - if (use_fake_dep) - { - write_insn<big_endian>(p, xor_2_12_12); - p += 4; - write_insn<big_endian>(p, add_11_11_2); - p += 4; - } - write_insn<big_endian>(p, ld_2_11 + l(off + 8)); + write_insn<big_endian>(p, ld_11_11 + l(off + 16)); p += 4; - if (static_chain) - { - write_insn<big_endian>(p, ld_11_11 + l(off + 16)); - p += 4; - } } } else { - if (cs->second.r2save_) - { - write_insn<big_endian>(p, - std_2_1 + this->targ_->stk_toc()); - p += 4; - } write_insn<big_endian>(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<big_endian>(p, addi_2_2 + l(off)); p += 4; @@ -5567,37 +5977,23 @@ Stub_table<size, big_endian>::do_write(Output_file* of) } write_insn<big_endian>(p, mtctr_12); p += 4; - if (plt_load_toc) + if (use_fake_dep) { - if (use_fake_dep) - { - write_insn<big_endian>(p, xor_11_12_12); - p += 4; - write_insn<big_endian>(p, add_2_2_11); - p += 4; - } - if (static_chain) - { - write_insn<big_endian>(p, ld_11_2 + l(off + 16)); - p += 4; - } - write_insn<big_endian>(p, ld_2_2 + l(off + 8)); + write_insn<big_endian>(p, xor_11_12_12); + p += 4; + write_insn<big_endian>(p, add_2_2_11); p += 4; } - } - if (!cs->second.localentry0_ - && this->targ_->is_tls_get_addr_opt(gsym)) - { - write_insn<big_endian>(p, bctrl); - p += 4; - write_insn<big_endian>(p, ld_2_1 + this->targ_->stk_toc()); - p += 4; - write_insn<big_endian>(p, ld_11_1 + this->targ_->stk_linker()); - p += 4; - write_insn<big_endian>(p, mtlr_11); + if (static_chain) + { + write_insn<big_endian>(p, ld_11_2 + l(off + 16)); + p += 4; + } + write_insn<big_endian>(p, ld_2_2 + l(off + 8)); p += 4; - write_insn<big_endian>(p, blr); } + if (this->build_tls_opt_tail(p, cs)) + ; else if (thread_safe && !use_fake_dep) { write_insn<big_endian>(p, cmpldi_2_0); @@ -5617,14 +6013,19 @@ Stub_table<size, big_endian>::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<big_endian>(p, b | (delta & 0x3fffffc)); - else + if (bs->second.notoc_) + { + unsigned char* startp = p; + p = build_notoc_offset<big_endian>(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_); @@ -5634,19 +6035,28 @@ Stub_table<size, big_endian>::do_write(Output_file* of) Address brltoff = brlt_addr - got_addr; if (ha(brltoff) == 0) { - write_insn<big_endian>(p, ld_12_2 + l(brltoff)), p += 4; + write_insn<big_endian>(p, ld_12_2 + l(brltoff)); + p += 4; } else { - write_insn<big_endian>(p, addis_12_2 + ha(brltoff)), p += 4; - write_insn<big_endian>(p, ld_12_12 + l(brltoff)), p += 4; + write_insn<big_endian>(p, addis_12_2 + ha(brltoff)); + p += 4; + write_insn<big_endian>(p, ld_12_12 + l(brltoff)); + p += 4; } - write_insn<big_endian>(p, mtctr_12), p += 4; + } + if (delta + (1 << 25) < 2 << 25) + write_insn<big_endian>(p, b | (delta & 0x3fffffc)); + else + { + write_insn<big_endian>(p, mtctr_12); + p += 4; write_insn<big_endian>(p, bctr); } } } - else + else // size == 32 { if (!this->plt_call_stubs_.empty()) { @@ -5664,26 +6074,7 @@ Stub_table<size, big_endian>::do_write(Output_file* of) 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<big_endian>(p, lwz_11_3 + 0); - p += 4; - write_insn<big_endian>(p, lwz_12_3 + 4); - p += 4; - write_insn<big_endian>(p, mr_0_3); - p += 4; - write_insn<big_endian>(p, cmpwi_11_0); - p += 4; - write_insn<big_endian>(p, add_3_12_2); - p += 4; - write_insn<big_endian>(p, beqlr); - p += 4; - write_insn<big_endian>(p, mr_3_0); - p += 4; - write_insn<big_endian>(p, nop); - p += 4; - } + this->build_tls_opt_head(&p, cs); if (parameters->options().output_is_position_independent()) { Address got_addr; @@ -5738,10 +6129,11 @@ Stub_table<size, big_endian>::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<big_endian>(p, b | (delta & 0x3fffffc)); @@ -6486,6 +6878,10 @@ Target_powerpc<size, big_endian>::Scan::get_reference_flags( 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: @@ -6700,10 +7096,16 @@ Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( 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: 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: @@ -6839,6 +7241,8 @@ Target_powerpc<size, big_endian>::Scan::local( 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: break; case elfcpp::R_PPC64_TOC: @@ -6941,6 +7345,10 @@ Target_powerpc<size, big_endian>::Scan::local( } 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: @@ -7407,6 +7815,8 @@ Target_powerpc<size, big_endian>::Scan::global( 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: break; case elfcpp::R_PPC64_TOC: @@ -7550,6 +7960,10 @@ Target_powerpc<size, big_endian>::Scan::global( 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) @@ -8902,7 +9316,8 @@ Target_powerpc<size, big_endian>::Relocate::relocate( break; case Track_tls::SKIP: if (is_plt16_reloc<size>(r_type) - || r_type == elfcpp::R_POWERPC_PLTSEQ) + || r_type == elfcpp::R_POWERPC_PLTSEQ + || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC) { Insn* iview = reinterpret_cast<Insn*>(view); elfcpp::Swap<32, big_endian>::writeval(iview, nop); @@ -8934,6 +9349,8 @@ Target_powerpc<size, big_endian>::Relocate::relocate( && !is_plt16_reloc<size>(r_type) && 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))) { @@ -8941,7 +9358,7 @@ Target_powerpc<size, big_endian>::Relocate::relocate( && gsym != NULL && target->abiversion() >= 2 && !parameters->options().output_is_position_independent() - && !is_branch_reloc(r_type)) + && !is_branch_reloc<size>(r_type)) { Address off = target->glink_section()->find_global_entry(gsym); if (off != invalid_address) @@ -8959,7 +9376,7 @@ Target_powerpc<size, big_endian>::Relocate::relocate( && !(size == 32 && gsym != NULL && !parameters->options().output_is_position_independent() - && !is_branch_reloc(r_type))) + && !is_branch_reloc<size>(r_type))) stub_table = object->stub_table(relinfo->data_shndx); if (stub_table == NULL) { @@ -8986,7 +9403,11 @@ Target_powerpc<size, big_endian>::Relocate::relocate( size_t reloc_count = shdr.get_sh_size() / reloc_size; if (size == 64 && ent->r2save_ - && relnum < reloc_count - 1) + && 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<size>(next_rela.get_r_info()) @@ -9033,7 +9454,8 @@ Target_powerpc<size, big_endian>::Relocate::relocate( } else if (!has_plt_offset && (is_plt16_reloc<size>(r_type) - || r_type == elfcpp::R_POWERPC_PLTSEQ)) + || r_type == elfcpp::R_POWERPC_PLTSEQ + || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC)) { Insn* iview = reinterpret_cast<Insn*>(view); elfcpp::Swap<32, big_endian>::writeval(iview, nop); @@ -9375,7 +9797,8 @@ Target_powerpc<size, big_endian>::Relocate::relocate( } else if (!has_stub_value) { - if (!has_plt_offset && r_type == elfcpp::R_POWERPC_PLTCALL) + 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<Insn*>(view); @@ -9384,6 +9807,8 @@ Target_powerpc<size, big_endian>::Relocate::relocate( 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; } @@ -9395,7 +9820,7 @@ Target_powerpc<size, big_endian>::Relocate::relocate( || 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<size>(r_type)) { if (target->abiversion() >= 2) { @@ -9411,19 +9836,29 @@ Target_powerpc<size, big_endian>::Relocate::relocate( &value, &dest_shndx); } } - Address max_branch_offset = max_branch_delta(r_type); + Address max_branch_offset = max_branch_delta<size>(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<size, big_endian>* 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<size, big_endian>::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; } } @@ -9432,6 +9867,10 @@ Target_powerpc<size, big_endian>::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: @@ -9871,6 +10310,10 @@ Target_powerpc<size, big_endian>::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: @@ -9924,6 +10367,8 @@ Target_powerpc<size, big_endian>::Relocate::relocate( 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: break; case elfcpp::R_PPC64_ADDR64: @@ -9954,6 +10399,10 @@ Target_powerpc<size, big_endian>::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: @@ -10182,7 +10631,6 @@ Target_powerpc<size, big_endian>::Relocate::relocate( case elfcpp::R_PPC64_PLTGOT16_HA: 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: @@ -10215,7 +10663,7 @@ Target_powerpc<size, big_endian>::Relocate::relocate( && (has_stub_value || !(gsym != NULL && gsym->is_undefined() - && is_branch_reloc(r_type)))) + && is_branch_reloc<size>(r_type)))) { gold_error_at_location(relinfo, relnum, rela.get_r_offset(), _("relocation overflow")); |