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Diffstat (limited to 'binutils-2.25/gold/sparc.cc')
| -rw-r--r-- | binutils-2.25/gold/sparc.cc | 4395 |
1 files changed, 4395 insertions, 0 deletions
diff --git a/binutils-2.25/gold/sparc.cc b/binutils-2.25/gold/sparc.cc new file mode 100644 index 00000000..cbe95b86 --- /dev/null +++ b/binutils-2.25/gold/sparc.cc @@ -0,0 +1,4395 @@ +// sparc.cc -- sparc target support for gold. + +// Copyright 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. +// Written by David S. Miller <davem@davemloft.net>. + +// This file is part of gold. + +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 3 of the License, or +// (at your option) any later version. + +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, +// MA 02110-1301, USA. + +#include "gold.h" + +#include <cstdlib> +#include <cstdio> +#include <cstring> + +#include "elfcpp.h" +#include "parameters.h" +#include "reloc.h" +#include "sparc.h" +#include "object.h" +#include "symtab.h" +#include "layout.h" +#include "output.h" +#include "copy-relocs.h" +#include "target.h" +#include "target-reloc.h" +#include "target-select.h" +#include "tls.h" +#include "errors.h" +#include "gc.h" + +namespace +{ + +using namespace gold; + +template<int size, bool big_endian> +class Output_data_plt_sparc; + +template<int size, bool big_endian> +class Target_sparc : public Sized_target<size, big_endian> +{ + public: + typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; + + Target_sparc() + : Sized_target<size, big_endian>(&sparc_info), + got_(NULL), plt_(NULL), rela_dyn_(NULL), rela_ifunc_(NULL), + copy_relocs_(elfcpp::R_SPARC_COPY), + got_mod_index_offset_(-1U), tls_get_addr_sym_(NULL), + elf_machine_(sparc_info.machine_code), elf_flags_(0), + elf_flags_set_(false) + { + } + + // Process the relocations to determine unreferenced sections for + // garbage collection. + void + gc_process_relocs(Symbol_table* symtab, + Layout* layout, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + bool needs_special_offset_handling, + size_t local_symbol_count, + const unsigned char* plocal_symbols); + + // Scan the relocations to look for symbol adjustments. + void + scan_relocs(Symbol_table* symtab, + Layout* layout, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + bool needs_special_offset_handling, + size_t local_symbol_count, + const unsigned char* plocal_symbols); + // Finalize the sections. + void + do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); + + // Return the value to use for a dynamic which requires special + // treatment. + uint64_t + do_dynsym_value(const Symbol*) const; + + // Relocate a section. + void + relocate_section(const Relocate_info<size, big_endian>*, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + bool needs_special_offset_handling, + unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr view_address, + section_size_type view_size, + const Reloc_symbol_changes*); + + // Scan the relocs during a relocatable link. + void + scan_relocatable_relocs(Symbol_table* symtab, + Layout* layout, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + bool needs_special_offset_handling, + size_t local_symbol_count, + const unsigned char* plocal_symbols, + Relocatable_relocs*); + + // Emit relocations for a section. + void + relocate_relocs(const Relocate_info<size, big_endian>*, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + typename elfcpp::Elf_types<size>::Elf_Off + offset_in_output_section, + const Relocatable_relocs*, + unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr view_address, + section_size_type view_size, + unsigned char* reloc_view, + section_size_type reloc_view_size); + + // Return whether SYM is defined by the ABI. + bool + do_is_defined_by_abi(const Symbol* sym) const + { + // XXX Really need to support this better... + if (sym->type() == elfcpp::STT_SPARC_REGISTER) + return 1; + + return strcmp(sym->name(), "___tls_get_addr") == 0; + } + + // Return the PLT address to use for a global symbol. + uint64_t + do_plt_address_for_global(const Symbol* gsym) const + { return this->plt_section()->address_for_global(gsym); } + + uint64_t + do_plt_address_for_local(const Relobj* relobj, unsigned int symndx) const + { return this->plt_section()->address_for_local(relobj, symndx); } + + // Return whether there is a GOT section. + bool + has_got_section() const + { return this->got_ != NULL; } + + // Return the size of the GOT section. + section_size_type + got_size() const + { + gold_assert(this->got_ != NULL); + return this->got_->data_size(); + } + + // Return the number of entries in the GOT. + unsigned int + got_entry_count() const + { + if (this->got_ == NULL) + return 0; + return this->got_size() / (size / 8); + } + + // Return the address of the GOT. + uint64_t + got_address() const + { + if (this->got_ == NULL) + return 0; + return this->got_->address(); + } + + // Return the number of entries in the PLT. + unsigned int + plt_entry_count() const; + + // Return the offset of the first non-reserved PLT entry. + unsigned int + first_plt_entry_offset() const; + + // Return the size of each PLT entry. + unsigned int + plt_entry_size() const; + + protected: + // Make an ELF object. + Object* + do_make_elf_object(const std::string&, Input_file*, off_t, + const elfcpp::Ehdr<size, big_endian>& ehdr); + + void + do_adjust_elf_header(unsigned char* view, int len); + + private: + + // The class which scans relocations. + class Scan + { + public: + Scan() + : issued_non_pic_error_(false) + { } + + static inline int + get_reference_flags(unsigned int r_type); + + inline void + local(Symbol_table* symtab, Layout* layout, Target_sparc* target, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + Output_section* output_section, + const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, + const elfcpp::Sym<size, big_endian>& lsym, + bool is_discarded); + + inline void + global(Symbol_table* symtab, Layout* layout, Target_sparc* target, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + Output_section* output_section, + const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, + Symbol* gsym); + + inline bool + local_reloc_may_be_function_pointer(Symbol_table* , Layout* , + Target_sparc* , + Sized_relobj_file<size, big_endian>* , + unsigned int , + Output_section* , + const elfcpp::Rela<size, big_endian>& , + unsigned int , + const elfcpp::Sym<size, big_endian>&) + { return false; } + + inline bool + global_reloc_may_be_function_pointer(Symbol_table* , Layout* , + Target_sparc* , + Sized_relobj_file<size, big_endian>* , + unsigned int , + Output_section* , + const elfcpp::Rela<size, + big_endian>& , + unsigned int , Symbol*) + { return false; } + + + private: + static void + unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, + unsigned int r_type); + + static void + unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, + unsigned int r_type, Symbol*); + + static void + generate_tls_call(Symbol_table* symtab, Layout* layout, + Target_sparc* target); + + void + check_non_pic(Relobj*, unsigned int r_type); + + bool + reloc_needs_plt_for_ifunc(Sized_relobj_file<size, big_endian>*, + unsigned int r_type); + + // Whether we have issued an error about a non-PIC compilation. + bool issued_non_pic_error_; + }; + + // The class which implements relocation. + class Relocate + { + public: + Relocate() + : ignore_gd_add_(false), reloc_adjust_addr_(NULL) + { } + + ~Relocate() + { + if (this->ignore_gd_add_) + { + // FIXME: This needs to specify the location somehow. + gold_error(_("missing expected TLS relocation")); + } + } + + // Do a relocation. Return false if the caller should not issue + // any warnings about this relocation. + inline bool + relocate(const Relocate_info<size, big_endian>*, Target_sparc*, + Output_section*, size_t relnum, + const elfcpp::Rela<size, big_endian>&, + unsigned int r_type, const Sized_symbol<size>*, + const Symbol_value<size>*, + unsigned char*, + typename elfcpp::Elf_types<size>::Elf_Addr, + section_size_type); + + private: + // Do a TLS relocation. + inline void + relocate_tls(const Relocate_info<size, big_endian>*, Target_sparc* target, + size_t relnum, const elfcpp::Rela<size, big_endian>&, + unsigned int r_type, const Sized_symbol<size>*, + const Symbol_value<size>*, + unsigned char*, + typename elfcpp::Elf_types<size>::Elf_Addr, + section_size_type); + + inline void + relax_call(Target_sparc<size, big_endian>* target, + unsigned char* view, + const elfcpp::Rela<size, big_endian>& rela, + section_size_type view_size); + + // Ignore the next relocation which should be R_SPARC_TLS_GD_ADD + bool ignore_gd_add_; + + // If we hit a reloc at this view address, adjust it back by 4 bytes. + unsigned char *reloc_adjust_addr_; + }; + + // A class which returns the size required for a relocation type, + // used while scanning relocs during a relocatable link. + class Relocatable_size_for_reloc + { + public: + unsigned int + get_size_for_reloc(unsigned int, Relobj*); + }; + + // Get the GOT section, creating it if necessary. + Output_data_got<size, big_endian>* + got_section(Symbol_table*, Layout*); + + // Create the PLT section. + void + make_plt_section(Symbol_table* symtab, Layout* layout); + + // Create a PLT entry for a global symbol. + void + make_plt_entry(Symbol_table*, Layout*, Symbol*); + + // Create a PLT entry for a local STT_GNU_IFUNC symbol. + void + make_local_ifunc_plt_entry(Symbol_table*, Layout*, + Sized_relobj_file<size, big_endian>* relobj, + unsigned int local_sym_index); + + // Create a GOT entry for the TLS module index. + unsigned int + got_mod_index_entry(Symbol_table* symtab, Layout* layout, + Sized_relobj_file<size, big_endian>* object); + + // Return the gsym for "__tls_get_addr". Cache if not already + // cached. + Symbol* + tls_get_addr_sym(Symbol_table* symtab) + { + if (!this->tls_get_addr_sym_) + this->tls_get_addr_sym_ = symtab->lookup("__tls_get_addr", NULL); + gold_assert(this->tls_get_addr_sym_); + return this->tls_get_addr_sym_; + } + + // Get the PLT section. + Output_data_plt_sparc<size, big_endian>* + plt_section() const + { + gold_assert(this->plt_ != NULL); + return this->plt_; + } + + // Get the dynamic reloc section, creating it if necessary. + Reloc_section* + rela_dyn_section(Layout*); + + // Get the section to use for IFUNC relocations. + Reloc_section* + rela_ifunc_section(Layout*); + + // Copy a relocation against a global symbol. + void + copy_reloc(Symbol_table* symtab, Layout* layout, + Sized_relobj_file<size, big_endian>* object, + unsigned int shndx, Output_section* output_section, + Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) + { + this->copy_relocs_.copy_reloc(symtab, layout, + symtab->get_sized_symbol<size>(sym), + object, shndx, output_section, + reloc, this->rela_dyn_section(layout)); + } + + // Information about this specific target which we pass to the + // general Target structure. + static Target::Target_info sparc_info; + + // The types of GOT entries needed for this platform. + // These values are exposed to the ABI in an incremental link. + // Do not renumber existing values without changing the version + // number of the .gnu_incremental_inputs section. + enum Got_type + { + GOT_TYPE_STANDARD = 0, // GOT entry for a regular symbol + GOT_TYPE_TLS_OFFSET = 1, // GOT entry for TLS offset + GOT_TYPE_TLS_PAIR = 2, // GOT entry for TLS module/offset pair + }; + + // The GOT section. + Output_data_got<size, big_endian>* got_; + // The PLT section. + Output_data_plt_sparc<size, big_endian>* plt_; + // The dynamic reloc section. + Reloc_section* rela_dyn_; + // The section to use for IFUNC relocs. + Reloc_section* rela_ifunc_; + // Relocs saved to avoid a COPY reloc. + Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; + // Offset of the GOT entry for the TLS module index; + unsigned int got_mod_index_offset_; + // Cached pointer to __tls_get_addr symbol + Symbol* tls_get_addr_sym_; + // Accumulated elf machine type + elfcpp::Elf_Half elf_machine_; + // Accumulated elf header flags + elfcpp::Elf_Word elf_flags_; + // Whether elf_flags_ has been set for the first time yet + bool elf_flags_set_; +}; + +template<> +Target::Target_info Target_sparc<32, true>::sparc_info = +{ + 32, // size + true, // is_big_endian + elfcpp::EM_SPARC, // machine_code + false, // has_make_symbol + false, // has_resolve + false, // has_code_fill + true, // is_default_stack_executable + false, // can_icf_inline_merge_sections + '\0', // wrap_char + "/usr/lib/ld.so.1", // dynamic_linker + 0x00010000, // default_text_segment_address + 64 * 1024, // abi_pagesize (overridable by -z max-page-size) + 8 * 1024, // common_pagesize (overridable by -z common-page-size) + false, // isolate_execinstr + 0, // rosegment_gap + elfcpp::SHN_UNDEF, // small_common_shndx + elfcpp::SHN_UNDEF, // large_common_shndx + 0, // small_common_section_flags + 0, // large_common_section_flags + NULL, // attributes_section + NULL, // attributes_vendor + "_start" // entry_symbol_name +}; + +template<> +Target::Target_info Target_sparc<64, true>::sparc_info = +{ + 64, // size + true, // is_big_endian + elfcpp::EM_SPARCV9, // machine_code + false, // has_make_symbol + false, // has_resolve + false, // has_code_fill + true, // is_default_stack_executable + false, // can_icf_inline_merge_sections + '\0', // wrap_char + "/usr/lib/sparcv9/ld.so.1", // dynamic_linker + 0x100000, // default_text_segment_address + 64 * 1024, // abi_pagesize (overridable by -z max-page-size) + 8 * 1024, // common_pagesize (overridable by -z common-page-size) + false, // isolate_execinstr + 0, // rosegment_gap + elfcpp::SHN_UNDEF, // small_common_shndx + elfcpp::SHN_UNDEF, // large_common_shndx + 0, // small_common_section_flags + 0, // large_common_section_flags + NULL, // attributes_section + NULL, // attributes_vendor + "_start" // entry_symbol_name +}; + +// We have to take care here, even when operating in little-endian +// mode, sparc instructions are still big endian. +template<int size, bool big_endian> +class Sparc_relocate_functions +{ +private: + // Do a simple relocation with the addend in the relocation. + template<int valsize> + static inline void + rela(unsigned char* view, + unsigned int right_shift, + typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, + typename elfcpp::Swap<size, big_endian>::Valtype value, + typename elfcpp::Swap<size, big_endian>::Valtype addend) + { + typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); + Valtype reloc = ((value + addend) >> right_shift); + + val &= ~dst_mask; + reloc &= dst_mask; + + elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); + } + + // Do a simple relocation using a symbol value with the addend in + // the relocation. + template<int valsize> + static inline void + rela(unsigned char* view, + unsigned int right_shift, + typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Swap<valsize, big_endian>::Valtype addend) + { + typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); + Valtype reloc = (psymval->value(object, addend) >> right_shift); + + val &= ~dst_mask; + reloc &= dst_mask; + + elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); + } + + // Do a simple relocation using a symbol value with the addend in + // the relocation, unaligned. + template<int valsize> + static inline void + rela_ua(unsigned char* view, + unsigned int right_shift, elfcpp::Elf_Xword dst_mask, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Swap<size, big_endian>::Valtype addend) + { + typedef typename elfcpp::Swap_unaligned<valsize, + big_endian>::Valtype Valtype; + unsigned char* wv = view; + Valtype val = elfcpp::Swap_unaligned<valsize, big_endian>::readval(wv); + Valtype reloc = (psymval->value(object, addend) >> right_shift); + + val &= ~dst_mask; + reloc &= dst_mask; + + elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, val | reloc); + } + + // Do a simple PC relative relocation with a Symbol_value with the + // addend in the relocation. + template<int valsize> + static inline void + pcrela(unsigned char* view, + unsigned int right_shift, + typename elfcpp::Elf_types<valsize>::Elf_Addr dst_mask, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Swap<size, big_endian>::Valtype addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); + Valtype reloc = ((psymval->value(object, addend) - address) + >> right_shift); + + val &= ~dst_mask; + reloc &= dst_mask; + + elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); + } + + template<int valsize> + static inline void + pcrela_unaligned(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Swap<size, big_endian>::Valtype addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + typedef typename elfcpp::Swap_unaligned<valsize, + big_endian>::Valtype Valtype; + unsigned char* wv = view; + Valtype reloc = (psymval->value(object, addend) - address); + + elfcpp::Swap_unaligned<valsize, big_endian>::writeval(wv, reloc); + } + + typedef Sparc_relocate_functions<size, big_endian> This; + typedef Sparc_relocate_functions<size, true> This_insn; + +public: + // R_SPARC_WDISP30: (Symbol + Addend - Address) >> 2 + static inline void + wdisp30(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This_insn::template pcrela<32>(view, 2, 0x3fffffff, object, + psymval, addend, address); + } + + // R_SPARC_WDISP22: (Symbol + Addend - Address) >> 2 + static inline void + wdisp22(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This_insn::template pcrela<32>(view, 2, 0x003fffff, object, + psymval, addend, address); + } + + // R_SPARC_WDISP19: (Symbol + Addend - Address) >> 2 + static inline void + wdisp19(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This_insn::template pcrela<32>(view, 2, 0x0007ffff, object, + psymval, addend, address); + } + + // R_SPARC_WDISP16: (Symbol + Addend - Address) >> 2 + static inline void + wdisp16(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + Valtype reloc = ((psymval->value(object, addend) - address) + >> 2); + + // The relocation value is split between the low 14 bits, + // and bits 20-21. + val &= ~((0x3 << 20) | 0x3fff); + reloc = (((reloc & 0xc000) << (20 - 14)) + | (reloc & 0x3ffff)); + + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } + + // R_SPARC_WDISP10: (Symbol + Addend - Address) >> 2 + static inline void + wdisp10(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + Valtype reloc = ((psymval->value(object, addend) - address) + >> 2); + + // The relocation value is split between the low bits 5-12, + // and high bits 19-20. + val &= ~((0x3 << 19) | (0xff << 5)); + reloc = (((reloc & 0x300) << (19 - 8)) + | ((reloc & 0xff) << (5 - 0))); + + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } + + // R_SPARC_PC22: (Symbol + Addend - Address) >> 10 + static inline void + pc22(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This_insn::template pcrela<32>(view, 10, 0x003fffff, object, + psymval, addend, address); + } + + // R_SPARC_PC10: (Symbol + Addend - Address) & 0x3ff + static inline void + pc10(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This_insn::template pcrela<32>(view, 0, 0x000003ff, object, + psymval, addend, address); + } + + // R_SPARC_HI22: (Symbol + Addend) >> 10 + static inline void + hi22(unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr value, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 10, 0x003fffff, value, addend); + } + + // R_SPARC_HI22: (Symbol + Addend) >> 10 + static inline void + hi22(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 10, 0x003fffff, object, psymval, addend); + } + + // R_SPARC_PCPLT22: (Symbol + Addend - Address) >> 10 + static inline void + pcplt22(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This_insn::template pcrela<32>(view, 10, 0x003fffff, object, + psymval, addend, address); + } + + // R_SPARC_LO10: (Symbol + Addend) & 0x3ff + static inline void + lo10(unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr value, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x000003ff, value, addend); + } + + // R_SPARC_LO10: (Symbol + Addend) & 0x3ff + static inline void + lo10(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); + } + + // R_SPARC_LO10: (Symbol + Addend) & 0x3ff + static inline void + lo10(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This_insn::template pcrela<32>(view, 0, 0x000003ff, object, + psymval, addend, address); + } + + // R_SPARC_OLO10: ((Symbol + Addend) & 0x3ff) + Addend2 + static inline void + olo10(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr addend2) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + Valtype reloc = psymval->value(object, addend); + + val &= ~0x1fff; + reloc &= 0x3ff; + reloc += addend2; + reloc &= 0x1fff; + + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } + + // R_SPARC_22: (Symbol + Addend) + static inline void + rela32_22(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x003fffff, object, psymval, addend); + } + + // R_SPARC_13: (Symbol + Addend) + static inline void + rela32_13(unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr value, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x00001fff, value, addend); + } + + // R_SPARC_13: (Symbol + Addend) + static inline void + rela32_13(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x00001fff, object, psymval, addend); + } + + // R_SPARC_UA16: (Symbol + Addend) + static inline void + ua16(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This::template rela_ua<16>(view, 0, 0xffff, object, psymval, addend); + } + + // R_SPARC_UA32: (Symbol + Addend) + static inline void + ua32(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This::template rela_ua<32>(view, 0, 0xffffffff, object, psymval, addend); + } + + // R_SPARC_UA64: (Symbol + Addend) + static inline void + ua64(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This::template rela_ua<64>(view, 0, ~(elfcpp::Elf_Xword) 0, + object, psymval, addend); + } + + // R_SPARC_DISP8: (Symbol + Addend - Address) + static inline void + disp8(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This::template pcrela_unaligned<8>(view, object, psymval, + addend, address); + } + + // R_SPARC_DISP16: (Symbol + Addend - Address) + static inline void + disp16(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This::template pcrela_unaligned<16>(view, object, psymval, + addend, address); + } + + // R_SPARC_DISP32: (Symbol + Addend - Address) + static inline void + disp32(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This::template pcrela_unaligned<32>(view, object, psymval, + addend, address); + } + + // R_SPARC_DISP64: (Symbol + Addend - Address) + static inline void + disp64(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + elfcpp::Elf_Xword addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This::template pcrela_unaligned<64>(view, object, psymval, + addend, address); + } + + // R_SPARC_H34: (Symbol + Addend) >> 12 + static inline void + h34(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 12, 0x003fffff, object, psymval, addend); + } + + // R_SPARC_H44: (Symbol + Addend) >> 22 + static inline void + h44(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 22, 0x003fffff, object, psymval, addend); + } + + // R_SPARC_M44: ((Symbol + Addend) >> 12) & 0x3ff + static inline void + m44(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 12, 0x000003ff, object, psymval, addend); + } + + // R_SPARC_L44: (Symbol + Addend) & 0xfff + static inline void + l44(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x00000fff, object, psymval, addend); + } + + // R_SPARC_HH22: (Symbol + Addend) >> 42 + static inline void + hh22(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 42, 0x003fffff, object, psymval, addend); + } + + // R_SPARC_PC_HH22: (Symbol + Addend - Address) >> 42 + static inline void + pc_hh22(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This_insn::template pcrela<32>(view, 42, 0x003fffff, object, + psymval, addend, address); + } + + // R_SPARC_HM10: ((Symbol + Addend) >> 32) & 0x3ff + static inline void + hm10(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 32, 0x000003ff, object, psymval, addend); + } + + // R_SPARC_PC_HM10: ((Symbol + Addend - Address) >> 32) & 0x3ff + static inline void + pc_hm10(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend, + typename elfcpp::Elf_types<size>::Elf_Addr address) + { + This_insn::template pcrela<32>(view, 32, 0x000003ff, object, + psymval, addend, address); + } + + // R_SPARC_11: (Symbol + Addend) + static inline void + rela32_11(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x000007ff, object, psymval, addend); + } + + // R_SPARC_10: (Symbol + Addend) + static inline void + rela32_10(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x000003ff, object, psymval, addend); + } + + // R_SPARC_7: (Symbol + Addend) + static inline void + rela32_7(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x0000007f, object, psymval, addend); + } + + // R_SPARC_6: (Symbol + Addend) + static inline void + rela32_6(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x0000003f, object, psymval, addend); + } + + // R_SPARC_5: (Symbol + Addend) + static inline void + rela32_5(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::template rela<32>(view, 0, 0x0000001f, object, psymval, addend); + } + + // R_SPARC_TLS_LDO_HIX22: @dtpoff(Symbol + Addend) >> 10 + static inline void + ldo_hix22(unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr value, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + This_insn::hi22(view, value, addend); + } + + // R_SPARC_TLS_LDO_LOX10: @dtpoff(Symbol + Addend) & 0x3ff + static inline void + ldo_lox10(unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr value, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + Valtype reloc = (value + addend); + + val &= ~0x1fff; + reloc &= 0x3ff; + + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } + + // R_SPARC_TLS_LE_HIX22: (@tpoff(Symbol + Addend) ^ 0xffffffffffffffff) >> 10 + static inline void + hix22(unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr value, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + Valtype reloc = (value + addend); + + val &= ~0x3fffff; + + reloc ^= ~(Valtype)0; + reloc >>= 10; + + reloc &= 0x3fffff; + + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } + + // R_SPARC_GOTDATA_OP_HIX22: @gdopoff(Symbol + Addend) >> 10 + static inline void + gdop_hix22(unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr value, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + int32_t reloc = static_cast<int32_t>(value + addend); + + val &= ~0x3fffff; + + if (reloc < 0) + reloc ^= ~static_cast<int32_t>(0); + reloc >>= 10; + + reloc &= 0x3fffff; + + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } + + // R_SPARC_HIX22: ((Symbol + Addend) ^ 0xffffffffffffffff) >> 10 + static inline void + hix22(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + Valtype reloc = psymval->value(object, addend); + + val &= ~0x3fffff; + + reloc ^= ~(Valtype)0; + reloc >>= 10; + + reloc &= 0x3fffff; + + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } + + + // R_SPARC_TLS_LE_LOX10: (@tpoff(Symbol + Addend) & 0x3ff) | 0x1c00 + static inline void + lox10(unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr value, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + Valtype reloc = (value + addend); + + val &= ~0x1fff; + reloc &= 0x3ff; + reloc |= 0x1c00; + + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } + + // R_SPARC_GOTDATA_OP_LOX10: (@gdopoff(Symbol + Addend) & 0x3ff) | 0x1c00 + static inline void + gdop_lox10(unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr value, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + int32_t reloc = static_cast<int32_t>(value + addend); + + if (reloc < 0) + reloc = (reloc & 0x3ff) | 0x1c00; + else + reloc = (reloc & 0x3ff); + + val &= ~0x1fff; + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } + + // R_SPARC_LOX10: ((Symbol + Addend) & 0x3ff) | 0x1c00 + static inline void + lox10(unsigned char* view, + const Sized_relobj_file<size, big_endian>* object, + const Symbol_value<size>* psymval, + typename elfcpp::Elf_types<size>::Elf_Addr addend) + { + typedef typename elfcpp::Swap<32, true>::Valtype Valtype; + Valtype* wv = reinterpret_cast<Valtype*>(view); + Valtype val = elfcpp::Swap<32, true>::readval(wv); + Valtype reloc = psymval->value(object, addend); + + val &= ~0x1fff; + reloc &= 0x3ff; + reloc |= 0x1c00; + + elfcpp::Swap<32, true>::writeval(wv, val | reloc); + } +}; + +// Get the GOT section, creating it if necessary. + +template<int size, bool big_endian> +Output_data_got<size, big_endian>* +Target_sparc<size, big_endian>::got_section(Symbol_table* symtab, + Layout* layout) +{ + if (this->got_ == NULL) + { + gold_assert(symtab != NULL && layout != NULL); + + this->got_ = new Output_data_got<size, big_endian>(); + + layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, + (elfcpp::SHF_ALLOC + | elfcpp::SHF_WRITE), + this->got_, ORDER_RELRO, true); + + // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section. + symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, + Symbol_table::PREDEFINED, + this->got_, + 0, 0, elfcpp::STT_OBJECT, + elfcpp::STB_LOCAL, + elfcpp::STV_HIDDEN, 0, + false, false); + } + + return this->got_; +} + +// Get the dynamic reloc section, creating it if necessary. + +template<int size, bool big_endian> +typename Target_sparc<size, big_endian>::Reloc_section* +Target_sparc<size, big_endian>::rela_dyn_section(Layout* layout) +{ + if (this->rela_dyn_ == NULL) + { + gold_assert(layout != NULL); + this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); + layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, + elfcpp::SHF_ALLOC, this->rela_dyn_, + ORDER_DYNAMIC_RELOCS, false); + } + return this->rela_dyn_; +} + +// Get the section to use for IFUNC relocs, creating it if +// necessary. These go in .rela.dyn, but only after all other dynamic +// relocations. They need to follow the other dynamic relocations so +// that they can refer to global variables initialized by those +// relocs. + +template<int size, bool big_endian> +typename Target_sparc<size, big_endian>::Reloc_section* +Target_sparc<size, big_endian>::rela_ifunc_section(Layout* layout) +{ + if (this->rela_ifunc_ == NULL) + { + // Make sure we have already created the dynamic reloc section. + this->rela_dyn_section(layout); + this->rela_ifunc_ = new Reloc_section(false); + layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, + elfcpp::SHF_ALLOC, this->rela_ifunc_, + ORDER_DYNAMIC_RELOCS, false); + gold_assert(this->rela_dyn_->output_section() + == this->rela_ifunc_->output_section()); + } + return this->rela_ifunc_; +} + +// A class to handle the PLT data. + +template<int size, bool big_endian> +class Output_data_plt_sparc : public Output_section_data +{ + public: + typedef Output_data_reloc<elfcpp::SHT_RELA, true, + size, big_endian> Reloc_section; + + Output_data_plt_sparc(Layout*); + + // Add an entry to the PLT. + void add_entry(Symbol_table* symtab, Layout* layout, Symbol* gsym); + + // Add an entry to the PLT for a local STT_GNU_IFUNC symbol. + unsigned int + add_local_ifunc_entry(Symbol_table*, Layout*, + Sized_relobj_file<size, big_endian>* relobj, + unsigned int local_sym_index); + + // Return the .rela.plt section data. + const Reloc_section* rel_plt() const + { + return this->rel_; + } + + // Return where the IFUNC relocations should go. + Reloc_section* + rela_ifunc(Symbol_table*, Layout*); + + void + emit_pending_ifunc_relocs(); + + // Return whether we created a section for IFUNC relocations. + bool + has_ifunc_section() const + { return this->ifunc_rel_ != NULL; } + + // Return the number of PLT entries. + unsigned int + entry_count() const + { return this->count_ + this->ifunc_count_; } + + // Return the offset of the first non-reserved PLT entry. + static unsigned int + first_plt_entry_offset() + { return 4 * base_plt_entry_size; } + + // Return the size of a PLT entry. + static unsigned int + get_plt_entry_size() + { return base_plt_entry_size; } + + // Return the PLT address to use for a global symbol. + uint64_t + address_for_global(const Symbol*); + + // Return the PLT address to use for a local symbol. + uint64_t + address_for_local(const Relobj*, unsigned int symndx); + + protected: + void do_adjust_output_section(Output_section* os); + + // Write to a map file. + void + do_print_to_mapfile(Mapfile* mapfile) const + { mapfile->print_output_data(this, _("** PLT")); } + + private: + // The size of an entry in the PLT. + static const int base_plt_entry_size = (size == 32 ? 12 : 32); + + static const unsigned int plt_entries_per_block = 160; + static const unsigned int plt_insn_chunk_size = 24; + static const unsigned int plt_pointer_chunk_size = 8; + static const unsigned int plt_block_size = + (plt_entries_per_block + * (plt_insn_chunk_size + plt_pointer_chunk_size)); + + section_offset_type + plt_index_to_offset(unsigned int index) + { + section_offset_type offset; + + if (size == 32 || index < 32768) + offset = index * base_plt_entry_size; + else + { + unsigned int ext_index = index - 32768; + + offset = (32768 * base_plt_entry_size) + + ((ext_index / plt_entries_per_block) + * plt_block_size) + + ((ext_index % plt_entries_per_block) + * plt_insn_chunk_size); + } + return offset; + } + + // Set the final size. + void + set_final_data_size() + { + unsigned int full_count = this->entry_count() + 4; + unsigned int extra = (size == 32 ? 4 : 0); + section_offset_type sz = plt_index_to_offset(full_count) + extra; + + return this->set_data_size(sz); + } + + // Write out the PLT data. + void + do_write(Output_file*); + + struct Global_ifunc + { + Reloc_section* rel; + Symbol* gsym; + unsigned int plt_index; + }; + + struct Local_ifunc + { + Reloc_section* rel; + Sized_relobj_file<size, big_endian>* object; + unsigned int local_sym_index; + unsigned int plt_index; + }; + + // The reloc section. + Reloc_section* rel_; + // The IFUNC relocations, if necessary. These must follow the + // regular relocations. + Reloc_section* ifunc_rel_; + // The number of PLT entries. + unsigned int count_; + // The number of PLT entries for IFUNC symbols. + unsigned int ifunc_count_; + // Global STT_GNU_IFUNC symbols. + std::vector<Global_ifunc> global_ifuncs_; + // Local STT_GNU_IFUNC symbols. + std::vector<Local_ifunc> local_ifuncs_; +}; + +// Define the constants as required by C++ standard. + +template<int size, bool big_endian> +const int Output_data_plt_sparc<size, big_endian>::base_plt_entry_size; + +template<int size, bool big_endian> +const unsigned int +Output_data_plt_sparc<size, big_endian>::plt_entries_per_block; + +template<int size, bool big_endian> +const unsigned int Output_data_plt_sparc<size, big_endian>::plt_insn_chunk_size; + +template<int size, bool big_endian> +const unsigned int +Output_data_plt_sparc<size, big_endian>::plt_pointer_chunk_size; + +template<int size, bool big_endian> +const unsigned int Output_data_plt_sparc<size, big_endian>::plt_block_size; + +// Create the PLT section. The ordinary .got section is an argument, +// since we need to refer to the start. + +template<int size, bool big_endian> +Output_data_plt_sparc<size, big_endian>::Output_data_plt_sparc(Layout* layout) + : Output_section_data(size == 32 ? 4 : 8), ifunc_rel_(NULL), + count_(0), ifunc_count_(0), global_ifuncs_(), local_ifuncs_() +{ + this->rel_ = new Reloc_section(false); + layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, + elfcpp::SHF_ALLOC, this->rel_, + ORDER_DYNAMIC_PLT_RELOCS, false); +} + +template<int size, bool big_endian> +void +Output_data_plt_sparc<size, big_endian>::do_adjust_output_section(Output_section* os) +{ + os->set_entsize(0); +} + +// Add an entry to the PLT. + +template<int size, bool big_endian> +void +Output_data_plt_sparc<size, big_endian>::add_entry(Symbol_table* symtab, + Layout* layout, + Symbol* gsym) +{ + gold_assert(!gsym->has_plt_offset()); + + section_offset_type plt_offset; + unsigned int index; + + if (gsym->type() == elfcpp::STT_GNU_IFUNC + && gsym->can_use_relative_reloc(false)) + { + index = this->ifunc_count_; + plt_offset = plt_index_to_offset(index); + gsym->set_plt_offset(plt_offset); + ++this->ifunc_count_; + Reloc_section* rel = this->rela_ifunc(symtab, layout); + + struct Global_ifunc gi; + gi.rel = rel; + gi.gsym = gsym; + gi.plt_index = index; + this->global_ifuncs_.push_back(gi); + } + else + { + plt_offset = plt_index_to_offset(this->count_ + 4); + gsym->set_plt_offset(plt_offset); + ++this->count_; + gsym->set_needs_dynsym_entry(); + this->rel_->add_global(gsym, elfcpp::R_SPARC_JMP_SLOT, this, + plt_offset, 0); + } + + // Note that we don't need to save the symbol. The contents of the + // PLT are independent of which symbols are used. The symbols only + // appear in the relocations. +} + +template<int size, bool big_endian> +unsigned int +Output_data_plt_sparc<size, big_endian>::add_local_ifunc_entry( + Symbol_table* symtab, + Layout* layout, + Sized_relobj_file<size, big_endian>* relobj, + unsigned int local_sym_index) +{ + unsigned int index = this->ifunc_count_; + section_offset_type plt_offset; + + plt_offset = plt_index_to_offset(index); + ++this->ifunc_count_; + + Reloc_section* rel = this->rela_ifunc(symtab, layout); + + struct Local_ifunc li; + li.rel = rel; + li.object = relobj; + li.local_sym_index = local_sym_index; + li.plt_index = index; + this->local_ifuncs_.push_back(li); + + return plt_offset; +} + +// Emit any pending IFUNC plt relocations. + +template<int size, bool big_endian> +void +Output_data_plt_sparc<size, big_endian>::emit_pending_ifunc_relocs() +{ + // Emit any pending IFUNC relocs. + for (typename std::vector<Global_ifunc>::const_iterator p = + this->global_ifuncs_.begin(); + p != this->global_ifuncs_.end(); + ++p) + { + section_offset_type plt_offset; + unsigned int index; + + index = this->count_ + p->plt_index + 4; + plt_offset = this->plt_index_to_offset(index); + p->rel->add_symbolless_global_addend(p->gsym, elfcpp::R_SPARC_JMP_IREL, + this, plt_offset, 0); + } + + for (typename std::vector<Local_ifunc>::const_iterator p = + this->local_ifuncs_.begin(); + p != this->local_ifuncs_.end(); + ++p) + { + section_offset_type plt_offset; + unsigned int index; + + index = this->count_ + p->plt_index + 4; + plt_offset = this->plt_index_to_offset(index); + p->rel->add_symbolless_local_addend(p->object, p->local_sym_index, + elfcpp::R_SPARC_JMP_IREL, + this, plt_offset, 0); + } +} + +// Return where the IFUNC relocations should go in the PLT. These +// follow the non-IFUNC relocations. + +template<int size, bool big_endian> +typename Output_data_plt_sparc<size, big_endian>::Reloc_section* +Output_data_plt_sparc<size, big_endian>::rela_ifunc( + Symbol_table* symtab, + Layout* layout) +{ + if (this->ifunc_rel_ == NULL) + { + this->ifunc_rel_ = new Reloc_section(false); + layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, + elfcpp::SHF_ALLOC, this->ifunc_rel_, + ORDER_DYNAMIC_PLT_RELOCS, false); + gold_assert(this->ifunc_rel_->output_section() + == this->rel_->output_section()); + + if (parameters->doing_static_link()) + { + // A statically linked executable will only have a .rel.plt + // section to hold R_SPARC_IRELATIVE and R_SPARC_JMP_IREL + // relocs for STT_GNU_IFUNC symbols. The library will use + // these symbols to locate the IRELATIVE and JMP_IREL relocs + // at program startup time. + symtab->define_in_output_data("__rela_iplt_start", NULL, + Symbol_table::PREDEFINED, + this->ifunc_rel_, 0, 0, + elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, + elfcpp::STV_HIDDEN, 0, false, true); + symtab->define_in_output_data("__rela_iplt_end", NULL, + Symbol_table::PREDEFINED, + this->ifunc_rel_, 0, 0, + elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, + elfcpp::STV_HIDDEN, 0, true, true); + } + } + return this->ifunc_rel_; +} + +// Return the PLT address to use for a global symbol. + +template<int size, bool big_endian> +uint64_t +Output_data_plt_sparc<size, big_endian>::address_for_global(const Symbol* gsym) +{ + uint64_t offset = 0; + if (gsym->type() == elfcpp::STT_GNU_IFUNC + && gsym->can_use_relative_reloc(false)) + offset = plt_index_to_offset(this->count_ + 4); + return this->address() + offset + gsym->plt_offset(); +} + +// Return the PLT address to use for a local symbol. These are always +// IRELATIVE relocs. + +template<int size, bool big_endian> +uint64_t +Output_data_plt_sparc<size, big_endian>::address_for_local( + const Relobj* object, + unsigned int r_sym) +{ + return (this->address() + + plt_index_to_offset(this->count_ + 4) + + object->local_plt_offset(r_sym)); +} + +static const unsigned int sparc_nop = 0x01000000; +static const unsigned int sparc_sethi_g1 = 0x03000000; +static const unsigned int sparc_branch_always = 0x30800000; +static const unsigned int sparc_branch_always_pt = 0x30680000; +static const unsigned int sparc_mov = 0x80100000; +static const unsigned int sparc_mov_g0_o0 = 0x90100000; +static const unsigned int sparc_mov_o7_g5 = 0x8a10000f; +static const unsigned int sparc_call_plus_8 = 0x40000002; +static const unsigned int sparc_ldx_o7_imm_g1 = 0xc25be000; +static const unsigned int sparc_jmpl_o7_g1_g1 = 0x83c3c001; +static const unsigned int sparc_mov_g5_o7 = 0x9e100005; + +// Write out the PLT. + +template<int size, bool big_endian> +void +Output_data_plt_sparc<size, big_endian>::do_write(Output_file* of) +{ + const off_t offset = this->offset(); + const section_size_type oview_size = + convert_to_section_size_type(this->data_size()); + unsigned char* const oview = of->get_output_view(offset, oview_size); + unsigned char* pov = oview; + + memset(pov, 0, base_plt_entry_size * 4); + pov += this->first_plt_entry_offset(); + + unsigned int plt_offset = base_plt_entry_size * 4; + const unsigned int count = this->entry_count(); + + if (size == 64) + { + unsigned int limit; + + limit = (count > 32768 ? 32768 : count); + + for (unsigned int i = 0; i < limit; ++i) + { + elfcpp::Swap<32, true>::writeval(pov + 0x00, + sparc_sethi_g1 + plt_offset); + elfcpp::Swap<32, true>::writeval(pov + 0x04, + sparc_branch_always_pt + + (((base_plt_entry_size - + (plt_offset + 4)) >> 2) & + 0x7ffff)); + elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); + elfcpp::Swap<32, true>::writeval(pov + 0x0c, sparc_nop); + elfcpp::Swap<32, true>::writeval(pov + 0x10, sparc_nop); + elfcpp::Swap<32, true>::writeval(pov + 0x14, sparc_nop); + elfcpp::Swap<32, true>::writeval(pov + 0x18, sparc_nop); + elfcpp::Swap<32, true>::writeval(pov + 0x1c, sparc_nop); + + pov += base_plt_entry_size; + plt_offset += base_plt_entry_size; + } + + if (count > 32768) + { + unsigned int ext_cnt = count - 32768; + unsigned int blks = ext_cnt / plt_entries_per_block; + + for (unsigned int i = 0; i < blks; ++i) + { + unsigned int data_off = (plt_entries_per_block + * plt_insn_chunk_size) - 4; + + for (unsigned int j = 0; j < plt_entries_per_block; ++j) + { + elfcpp::Swap<32, true>::writeval(pov + 0x00, + sparc_mov_o7_g5); + elfcpp::Swap<32, true>::writeval(pov + 0x04, + sparc_call_plus_8); + elfcpp::Swap<32, true>::writeval(pov + 0x08, + sparc_nop); + elfcpp::Swap<32, true>::writeval(pov + 0x0c, + sparc_ldx_o7_imm_g1 + + (data_off & 0x1fff)); + elfcpp::Swap<32, true>::writeval(pov + 0x10, + sparc_jmpl_o7_g1_g1); + elfcpp::Swap<32, true>::writeval(pov + 0x14, + sparc_mov_g5_o7); + + elfcpp::Swap<64, big_endian>::writeval( + pov + 0x4 + data_off, + (elfcpp::Elf_Xword) (oview - (pov + 0x04))); + + pov += plt_insn_chunk_size; + data_off -= 16; + } + } + + unsigned int sub_blk_cnt = ext_cnt % plt_entries_per_block; + for (unsigned int i = 0; i < sub_blk_cnt; ++i) + { + unsigned int data_off = (sub_blk_cnt + * plt_insn_chunk_size) - 4; + + for (unsigned int j = 0; j < plt_entries_per_block; ++j) + { + elfcpp::Swap<32, true>::writeval(pov + 0x00, + sparc_mov_o7_g5); + elfcpp::Swap<32, true>::writeval(pov + 0x04, + sparc_call_plus_8); + elfcpp::Swap<32, true>::writeval(pov + 0x08, + sparc_nop); + elfcpp::Swap<32, true>::writeval(pov + 0x0c, + sparc_ldx_o7_imm_g1 + + (data_off & 0x1fff)); + elfcpp::Swap<32, true>::writeval(pov + 0x10, + sparc_jmpl_o7_g1_g1); + elfcpp::Swap<32, true>::writeval(pov + 0x14, + sparc_mov_g5_o7); + + elfcpp::Swap<64, big_endian>::writeval( + pov + 0x4 + data_off, + (elfcpp::Elf_Xword) (oview - (pov + 0x04))); + + pov += plt_insn_chunk_size; + data_off -= 16; + } + } + } + } + else + { + for (unsigned int i = 0; i < count; ++i) + { + elfcpp::Swap<32, true>::writeval(pov + 0x00, + sparc_sethi_g1 + plt_offset); + elfcpp::Swap<32, true>::writeval(pov + 0x04, + sparc_branch_always + + (((- (plt_offset + 4)) >> 2) & + 0x003fffff)); + elfcpp::Swap<32, true>::writeval(pov + 0x08, sparc_nop); + + pov += base_plt_entry_size; + plt_offset += base_plt_entry_size; + } + + elfcpp::Swap<32, true>::writeval(pov, sparc_nop); + pov += 4; + } + + gold_assert(static_cast<section_size_type>(pov - oview) == oview_size); + + of->write_output_view(offset, oview_size, oview); +} + +// Create the PLT section. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::make_plt_section(Symbol_table* symtab, + Layout* layout) +{ + // Create the GOT sections first. + this->got_section(symtab, layout); + + // Ensure that .rela.dyn always appears before .rela.plt This is + // necessary due to how, on Sparc and some other targets, .rela.dyn + // needs to include .rela.plt in it's range. + this->rela_dyn_section(layout); + + this->plt_ = new Output_data_plt_sparc<size, big_endian>(layout); + layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS, + (elfcpp::SHF_ALLOC + | elfcpp::SHF_EXECINSTR + | elfcpp::SHF_WRITE), + this->plt_, ORDER_NON_RELRO_FIRST, false); + + // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section. + symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL, + Symbol_table::PREDEFINED, + this->plt_, + 0, 0, elfcpp::STT_OBJECT, + elfcpp::STB_LOCAL, + elfcpp::STV_HIDDEN, 0, + false, false); +} + +// Create a PLT entry for a global symbol. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::make_plt_entry(Symbol_table* symtab, + Layout* layout, + Symbol* gsym) +{ + if (gsym->has_plt_offset()) + return; + + if (this->plt_ == NULL) + this->make_plt_section(symtab, layout); + + this->plt_->add_entry(symtab, layout, gsym); +} + +// Make a PLT entry for a local STT_GNU_IFUNC symbol. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::make_local_ifunc_plt_entry( + Symbol_table* symtab, + Layout* layout, + Sized_relobj_file<size, big_endian>* relobj, + unsigned int local_sym_index) +{ + if (relobj->local_has_plt_offset(local_sym_index)) + return; + if (this->plt_ == NULL) + this->make_plt_section(symtab, layout); + unsigned int plt_offset = this->plt_->add_local_ifunc_entry(symtab, layout, + relobj, + local_sym_index); + relobj->set_local_plt_offset(local_sym_index, plt_offset); +} + +// Return the number of entries in the PLT. + +template<int size, bool big_endian> +unsigned int +Target_sparc<size, big_endian>::plt_entry_count() const +{ + if (this->plt_ == NULL) + return 0; + return this->plt_->entry_count(); +} + +// Return the offset of the first non-reserved PLT entry. + +template<int size, bool big_endian> +unsigned int +Target_sparc<size, big_endian>::first_plt_entry_offset() const +{ + return Output_data_plt_sparc<size, big_endian>::first_plt_entry_offset(); +} + +// Return the size of each PLT entry. + +template<int size, bool big_endian> +unsigned int +Target_sparc<size, big_endian>::plt_entry_size() const +{ + return Output_data_plt_sparc<size, big_endian>::get_plt_entry_size(); +} + +// Create a GOT entry for the TLS module index. + +template<int size, bool big_endian> +unsigned int +Target_sparc<size, big_endian>::got_mod_index_entry( + Symbol_table* symtab, + Layout* layout, + Sized_relobj_file<size, big_endian>* object) +{ + if (this->got_mod_index_offset_ == -1U) + { + gold_assert(symtab != NULL && layout != NULL && object != NULL); + Reloc_section* rela_dyn = this->rela_dyn_section(layout); + Output_data_got<size, big_endian>* got; + unsigned int got_offset; + + got = this->got_section(symtab, layout); + got_offset = got->add_constant(0); + rela_dyn->add_local(object, 0, + (size == 64 ? + elfcpp::R_SPARC_TLS_DTPMOD64 : + elfcpp::R_SPARC_TLS_DTPMOD32), got, + got_offset, 0); + got->add_constant(0); + this->got_mod_index_offset_ = got_offset; + } + return this->got_mod_index_offset_; +} + +// Optimize the TLS relocation type based on what we know about the +// symbol. IS_FINAL is true if the final address of this symbol is +// known at link time. + +static tls::Tls_optimization +optimize_tls_reloc(bool is_final, int r_type) +{ + // If we are generating a shared library, then we can't do anything + // in the linker. + if (parameters->options().shared()) + return tls::TLSOPT_NONE; + + switch (r_type) + { + case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic + case elfcpp::R_SPARC_TLS_GD_LO10: + case elfcpp::R_SPARC_TLS_GD_ADD: + case elfcpp::R_SPARC_TLS_GD_CALL: + // These are General-Dynamic which permits fully general TLS + // access. Since we know that we are generating an executable, + // we can convert this to Initial-Exec. If we also know that + // this is a local symbol, we can further switch to Local-Exec. + if (is_final) + return tls::TLSOPT_TO_LE; + return tls::TLSOPT_TO_IE; + + case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic + case elfcpp::R_SPARC_TLS_LDM_LO10: + case elfcpp::R_SPARC_TLS_LDM_ADD: + case elfcpp::R_SPARC_TLS_LDM_CALL: + // This is Local-Dynamic, which refers to a local symbol in the + // dynamic TLS block. Since we know that we generating an + // executable, we can switch to Local-Exec. + return tls::TLSOPT_TO_LE; + + case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic + case elfcpp::R_SPARC_TLS_LDO_LOX10: + case elfcpp::R_SPARC_TLS_LDO_ADD: + // Another type of Local-Dynamic relocation. + return tls::TLSOPT_TO_LE; + + case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec + case elfcpp::R_SPARC_TLS_IE_LO10: + case elfcpp::R_SPARC_TLS_IE_LD: + case elfcpp::R_SPARC_TLS_IE_LDX: + case elfcpp::R_SPARC_TLS_IE_ADD: + // These are Initial-Exec relocs which get the thread offset + // from the GOT. If we know that we are linking against the + // local symbol, we can switch to Local-Exec, which links the + // thread offset into the instruction. + if (is_final) + return tls::TLSOPT_TO_LE; + return tls::TLSOPT_NONE; + + case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec + case elfcpp::R_SPARC_TLS_LE_LOX10: + // When we already have Local-Exec, there is nothing further we + // can do. + return tls::TLSOPT_NONE; + + default: + gold_unreachable(); + } +} + +// Get the Reference_flags for a particular relocation. + +template<int size, bool big_endian> +int +Target_sparc<size, big_endian>::Scan::get_reference_flags(unsigned int r_type) +{ + r_type &= 0xff; + switch (r_type) + { + case elfcpp::R_SPARC_NONE: + case elfcpp::R_SPARC_REGISTER: + case elfcpp::R_SPARC_GNU_VTINHERIT: + case elfcpp::R_SPARC_GNU_VTENTRY: + // No symbol reference. + return 0; + + case elfcpp::R_SPARC_UA64: + case elfcpp::R_SPARC_64: + case elfcpp::R_SPARC_HIX22: + case elfcpp::R_SPARC_LOX10: + case elfcpp::R_SPARC_H34: + case elfcpp::R_SPARC_H44: + case elfcpp::R_SPARC_M44: + case elfcpp::R_SPARC_L44: + case elfcpp::R_SPARC_HH22: + case elfcpp::R_SPARC_HM10: + case elfcpp::R_SPARC_LM22: + case elfcpp::R_SPARC_HI22: + case elfcpp::R_SPARC_LO10: + case elfcpp::R_SPARC_OLO10: + case elfcpp::R_SPARC_UA32: + case elfcpp::R_SPARC_32: + case elfcpp::R_SPARC_UA16: + case elfcpp::R_SPARC_16: + case elfcpp::R_SPARC_11: + case elfcpp::R_SPARC_10: + case elfcpp::R_SPARC_8: + case elfcpp::R_SPARC_7: + case elfcpp::R_SPARC_6: + case elfcpp::R_SPARC_5: + return Symbol::ABSOLUTE_REF; + + case elfcpp::R_SPARC_DISP8: + case elfcpp::R_SPARC_DISP16: + case elfcpp::R_SPARC_DISP32: + case elfcpp::R_SPARC_DISP64: + case elfcpp::R_SPARC_PC_HH22: + case elfcpp::R_SPARC_PC_HM10: + case elfcpp::R_SPARC_PC_LM22: + case elfcpp::R_SPARC_PC10: + case elfcpp::R_SPARC_PC22: + case elfcpp::R_SPARC_WDISP30: + case elfcpp::R_SPARC_WDISP22: + case elfcpp::R_SPARC_WDISP19: + case elfcpp::R_SPARC_WDISP16: + case elfcpp::R_SPARC_WDISP10: + return Symbol::RELATIVE_REF; + + case elfcpp::R_SPARC_PLT64: + case elfcpp::R_SPARC_PLT32: + case elfcpp::R_SPARC_HIPLT22: + case elfcpp::R_SPARC_LOPLT10: + case elfcpp::R_SPARC_PCPLT10: + return Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; + + case elfcpp::R_SPARC_PCPLT32: + case elfcpp::R_SPARC_PCPLT22: + case elfcpp::R_SPARC_WPLT30: + return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; + + case elfcpp::R_SPARC_GOTDATA_OP: + case elfcpp::R_SPARC_GOTDATA_OP_HIX22: + case elfcpp::R_SPARC_GOTDATA_OP_LOX10: + case elfcpp::R_SPARC_GOT10: + case elfcpp::R_SPARC_GOT13: + case elfcpp::R_SPARC_GOT22: + // Absolute in GOT. + return Symbol::ABSOLUTE_REF; + + case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic + case elfcpp::R_SPARC_TLS_GD_LO10: + case elfcpp::R_SPARC_TLS_GD_ADD: + case elfcpp::R_SPARC_TLS_GD_CALL: + case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic + case elfcpp::R_SPARC_TLS_LDM_LO10: + case elfcpp::R_SPARC_TLS_LDM_ADD: + case elfcpp::R_SPARC_TLS_LDM_CALL: + case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic + case elfcpp::R_SPARC_TLS_LDO_LOX10: + case elfcpp::R_SPARC_TLS_LDO_ADD: + case elfcpp::R_SPARC_TLS_LE_HIX22: + case elfcpp::R_SPARC_TLS_LE_LOX10: + case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec + case elfcpp::R_SPARC_TLS_IE_LO10: + case elfcpp::R_SPARC_TLS_IE_LD: + case elfcpp::R_SPARC_TLS_IE_LDX: + case elfcpp::R_SPARC_TLS_IE_ADD: + return Symbol::TLS_REF; + + case elfcpp::R_SPARC_COPY: + case elfcpp::R_SPARC_GLOB_DAT: + case elfcpp::R_SPARC_JMP_SLOT: + case elfcpp::R_SPARC_JMP_IREL: + case elfcpp::R_SPARC_RELATIVE: + case elfcpp::R_SPARC_IRELATIVE: + case elfcpp::R_SPARC_TLS_DTPMOD64: + case elfcpp::R_SPARC_TLS_DTPMOD32: + case elfcpp::R_SPARC_TLS_DTPOFF64: + case elfcpp::R_SPARC_TLS_DTPOFF32: + case elfcpp::R_SPARC_TLS_TPOFF64: + case elfcpp::R_SPARC_TLS_TPOFF32: + default: + // Not expected. We will give an error later. + return 0; + } +} + +// Generate a PLT entry slot for a call to __tls_get_addr +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::Scan::generate_tls_call(Symbol_table* symtab, + Layout* layout, + Target_sparc<size, big_endian>* target) +{ + Symbol* gsym = target->tls_get_addr_sym(symtab); + + target->make_plt_entry(symtab, layout, gsym); +} + +// Report an unsupported relocation against a local symbol. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::Scan::unsupported_reloc_local( + Sized_relobj_file<size, big_endian>* object, + unsigned int r_type) +{ + gold_error(_("%s: unsupported reloc %u against local symbol"), + object->name().c_str(), r_type); +} + +// We are about to emit a dynamic relocation of type R_TYPE. If the +// dynamic linker does not support it, issue an error. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::Scan::check_non_pic(Relobj* object, unsigned int r_type) +{ + gold_assert(r_type != elfcpp::R_SPARC_NONE); + + if (size == 64) + { + switch (r_type) + { + // These are the relocation types supported by glibc for sparc 64-bit. + case elfcpp::R_SPARC_RELATIVE: + case elfcpp::R_SPARC_IRELATIVE: + case elfcpp::R_SPARC_COPY: + case elfcpp::R_SPARC_64: + case elfcpp::R_SPARC_GLOB_DAT: + case elfcpp::R_SPARC_JMP_SLOT: + case elfcpp::R_SPARC_JMP_IREL: + case elfcpp::R_SPARC_TLS_DTPMOD64: + case elfcpp::R_SPARC_TLS_DTPOFF64: + case elfcpp::R_SPARC_TLS_TPOFF64: + case elfcpp::R_SPARC_TLS_LE_HIX22: + case elfcpp::R_SPARC_TLS_LE_LOX10: + case elfcpp::R_SPARC_8: + case elfcpp::R_SPARC_16: + case elfcpp::R_SPARC_DISP8: + case elfcpp::R_SPARC_DISP16: + case elfcpp::R_SPARC_DISP32: + case elfcpp::R_SPARC_WDISP30: + case elfcpp::R_SPARC_LO10: + case elfcpp::R_SPARC_HI22: + case elfcpp::R_SPARC_OLO10: + case elfcpp::R_SPARC_H34: + case elfcpp::R_SPARC_H44: + case elfcpp::R_SPARC_M44: + case elfcpp::R_SPARC_L44: + case elfcpp::R_SPARC_HH22: + case elfcpp::R_SPARC_HM10: + case elfcpp::R_SPARC_LM22: + case elfcpp::R_SPARC_UA16: + case elfcpp::R_SPARC_UA32: + case elfcpp::R_SPARC_UA64: + return; + + default: + break; + } + } + else + { + switch (r_type) + { + // These are the relocation types supported by glibc for sparc 32-bit. + case elfcpp::R_SPARC_RELATIVE: + case elfcpp::R_SPARC_IRELATIVE: + case elfcpp::R_SPARC_COPY: + case elfcpp::R_SPARC_GLOB_DAT: + case elfcpp::R_SPARC_32: + case elfcpp::R_SPARC_JMP_SLOT: + case elfcpp::R_SPARC_JMP_IREL: + case elfcpp::R_SPARC_TLS_DTPMOD32: + case elfcpp::R_SPARC_TLS_DTPOFF32: + case elfcpp::R_SPARC_TLS_TPOFF32: + case elfcpp::R_SPARC_TLS_LE_HIX22: + case elfcpp::R_SPARC_TLS_LE_LOX10: + case elfcpp::R_SPARC_8: + case elfcpp::R_SPARC_16: + case elfcpp::R_SPARC_DISP8: + case elfcpp::R_SPARC_DISP16: + case elfcpp::R_SPARC_DISP32: + case elfcpp::R_SPARC_LO10: + case elfcpp::R_SPARC_WDISP30: + case elfcpp::R_SPARC_HI22: + case elfcpp::R_SPARC_UA16: + case elfcpp::R_SPARC_UA32: + return; + + default: + break; + } + } + + // This prevents us from issuing more than one error per reloc + // section. But we can still wind up issuing more than one + // error per object file. + if (this->issued_non_pic_error_) + return; + gold_assert(parameters->options().output_is_position_independent()); + object->error(_("requires unsupported dynamic reloc; " + "recompile with -fPIC")); + this->issued_non_pic_error_ = true; + return; +} + +// Return whether we need to make a PLT entry for a relocation of the +// given type against a STT_GNU_IFUNC symbol. + +template<int size, bool big_endian> +bool +Target_sparc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( + Sized_relobj_file<size, big_endian>* object, + unsigned int r_type) +{ + int flags = Scan::get_reference_flags(r_type); + if (flags & Symbol::TLS_REF) + gold_error(_("%s: unsupported TLS reloc %u for IFUNC symbol"), + object->name().c_str(), r_type); + return flags != 0; +} + +// Scan a relocation for a local symbol. + +template<int size, bool big_endian> +inline void +Target_sparc<size, big_endian>::Scan::local( + Symbol_table* symtab, + Layout* layout, + Target_sparc<size, big_endian>* target, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + Output_section* output_section, + const elfcpp::Rela<size, big_endian>& reloc, + unsigned int r_type, + const elfcpp::Sym<size, big_endian>& lsym, + bool is_discarded) +{ + if (is_discarded) + return; + + bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; + unsigned int orig_r_type = r_type; + r_type &= 0xff; + + if (is_ifunc + && this->reloc_needs_plt_for_ifunc(object, r_type)) + { + unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); + target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); + } + + switch (r_type) + { + case elfcpp::R_SPARC_NONE: + case elfcpp::R_SPARC_REGISTER: + case elfcpp::R_SPARC_GNU_VTINHERIT: + case elfcpp::R_SPARC_GNU_VTENTRY: + break; + + case elfcpp::R_SPARC_64: + case elfcpp::R_SPARC_32: + // If building a shared library (or a position-independent + // executable), we need to create a dynamic relocation for + // this location. The relocation applied at link time will + // apply the link-time value, so we flag the location with + // an R_SPARC_RELATIVE relocation so the dynamic loader can + // relocate it easily. + if (parameters->options().output_is_position_independent()) + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); + rela_dyn->add_local_relative(object, r_sym, elfcpp::R_SPARC_RELATIVE, + output_section, data_shndx, + reloc.get_r_offset(), + reloc.get_r_addend(), is_ifunc); + } + break; + + case elfcpp::R_SPARC_HIX22: + case elfcpp::R_SPARC_LOX10: + case elfcpp::R_SPARC_H34: + case elfcpp::R_SPARC_H44: + case elfcpp::R_SPARC_M44: + case elfcpp::R_SPARC_L44: + case elfcpp::R_SPARC_HH22: + case elfcpp::R_SPARC_HM10: + case elfcpp::R_SPARC_LM22: + case elfcpp::R_SPARC_UA64: + case elfcpp::R_SPARC_UA32: + case elfcpp::R_SPARC_UA16: + case elfcpp::R_SPARC_HI22: + case elfcpp::R_SPARC_LO10: + case elfcpp::R_SPARC_OLO10: + case elfcpp::R_SPARC_16: + case elfcpp::R_SPARC_11: + case elfcpp::R_SPARC_10: + case elfcpp::R_SPARC_8: + case elfcpp::R_SPARC_7: + case elfcpp::R_SPARC_6: + case elfcpp::R_SPARC_5: + // If building a shared library (or a position-independent + // executable), we need to create a dynamic relocation for + // this location. + if (parameters->options().output_is_position_independent()) + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); + + check_non_pic(object, r_type); + if (lsym.get_st_type() != elfcpp::STT_SECTION) + { + rela_dyn->add_local(object, r_sym, orig_r_type, output_section, + data_shndx, reloc.get_r_offset(), + reloc.get_r_addend()); + } + else + { + gold_assert(lsym.get_st_value() == 0); + rela_dyn->add_symbolless_local_addend(object, r_sym, orig_r_type, + output_section, data_shndx, + reloc.get_r_offset(), + reloc.get_r_addend()); + } + } + break; + + case elfcpp::R_SPARC_WDISP30: + case elfcpp::R_SPARC_WPLT30: + case elfcpp::R_SPARC_WDISP22: + case elfcpp::R_SPARC_WDISP19: + case elfcpp::R_SPARC_WDISP16: + case elfcpp::R_SPARC_WDISP10: + case elfcpp::R_SPARC_DISP8: + case elfcpp::R_SPARC_DISP16: + case elfcpp::R_SPARC_DISP32: + case elfcpp::R_SPARC_DISP64: + case elfcpp::R_SPARC_PC10: + case elfcpp::R_SPARC_PC22: + break; + + case elfcpp::R_SPARC_GOTDATA_OP: + case elfcpp::R_SPARC_GOTDATA_OP_HIX22: + case elfcpp::R_SPARC_GOTDATA_OP_LOX10: + // We will optimize this into a GOT relative relocation + // and code transform the GOT load into an addition. + break; + + case elfcpp::R_SPARC_GOT10: + case elfcpp::R_SPARC_GOT13: + case elfcpp::R_SPARC_GOT22: + { + // The symbol requires a GOT entry. + Output_data_got<size, big_endian>* got; + unsigned int r_sym; + + got = target->got_section(symtab, layout); + r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); + + // If we are generating a shared object, we need to add a + // dynamic relocation for this symbol's GOT entry. + if (parameters->options().output_is_position_independent()) + { + if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + unsigned int off = got->add_constant(0); + object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); + rela_dyn->add_local_relative(object, r_sym, + elfcpp::R_SPARC_RELATIVE, + got, off, 0, is_ifunc); + } + } + else + got->add_local(object, r_sym, GOT_TYPE_STANDARD); + } + break; + + // These are initial TLS relocs, which are expected when + // linking. + case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic + case elfcpp::R_SPARC_TLS_GD_LO10: + case elfcpp::R_SPARC_TLS_GD_ADD: + case elfcpp::R_SPARC_TLS_GD_CALL: + case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic + case elfcpp::R_SPARC_TLS_LDM_LO10: + case elfcpp::R_SPARC_TLS_LDM_ADD: + case elfcpp::R_SPARC_TLS_LDM_CALL: + case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic + case elfcpp::R_SPARC_TLS_LDO_LOX10: + case elfcpp::R_SPARC_TLS_LDO_ADD: + case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec + case elfcpp::R_SPARC_TLS_IE_LO10: + case elfcpp::R_SPARC_TLS_IE_LD: + case elfcpp::R_SPARC_TLS_IE_LDX: + case elfcpp::R_SPARC_TLS_IE_ADD: + case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec + case elfcpp::R_SPARC_TLS_LE_LOX10: + { + bool output_is_shared = parameters->options().shared(); + const tls::Tls_optimization optimized_type + = optimize_tls_reloc(!output_is_shared, r_type); + switch (r_type) + { + case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic + case elfcpp::R_SPARC_TLS_GD_LO10: + case elfcpp::R_SPARC_TLS_GD_ADD: + case elfcpp::R_SPARC_TLS_GD_CALL: + if (optimized_type == tls::TLSOPT_NONE) + { + // Create a pair of GOT entries for the module index and + // dtv-relative offset. + Output_data_got<size, big_endian>* got + = target->got_section(symtab, layout); + unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); + unsigned int shndx = lsym.get_st_shndx(); + bool is_ordinary; + shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); + if (!is_ordinary) + object->error(_("local symbol %u has bad shndx %u"), + r_sym, shndx); + else + got->add_local_pair_with_rel(object, r_sym, + lsym.get_st_shndx(), + GOT_TYPE_TLS_PAIR, + target->rela_dyn_section(layout), + (size == 64 + ? elfcpp::R_SPARC_TLS_DTPMOD64 + : elfcpp::R_SPARC_TLS_DTPMOD32)); + if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) + generate_tls_call(symtab, layout, target); + } + else if (optimized_type != tls::TLSOPT_TO_LE) + unsupported_reloc_local(object, r_type); + break; + + case elfcpp::R_SPARC_TLS_LDM_HI22 : // Local-dynamic + case elfcpp::R_SPARC_TLS_LDM_LO10: + case elfcpp::R_SPARC_TLS_LDM_ADD: + case elfcpp::R_SPARC_TLS_LDM_CALL: + if (optimized_type == tls::TLSOPT_NONE) + { + // Create a GOT entry for the module index. + target->got_mod_index_entry(symtab, layout, object); + + if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) + generate_tls_call(symtab, layout, target); + } + else if (optimized_type != tls::TLSOPT_TO_LE) + unsupported_reloc_local(object, r_type); + break; + + case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic + case elfcpp::R_SPARC_TLS_LDO_LOX10: + case elfcpp::R_SPARC_TLS_LDO_ADD: + break; + + case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec + case elfcpp::R_SPARC_TLS_IE_LO10: + case elfcpp::R_SPARC_TLS_IE_LD: + case elfcpp::R_SPARC_TLS_IE_LDX: + case elfcpp::R_SPARC_TLS_IE_ADD: + layout->set_has_static_tls(); + if (optimized_type == tls::TLSOPT_NONE) + { + // Create a GOT entry for the tp-relative offset. + Output_data_got<size, big_endian>* got + = target->got_section(symtab, layout); + unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); + + if (!object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET)) + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + unsigned int off = got->add_constant(0); + + object->set_local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET, off); + + rela_dyn->add_symbolless_local_addend(object, r_sym, + (size == 64 ? + elfcpp::R_SPARC_TLS_TPOFF64 : + elfcpp::R_SPARC_TLS_TPOFF32), + got, off, 0); + } + } + else if (optimized_type != tls::TLSOPT_TO_LE) + unsupported_reloc_local(object, r_type); + break; + + case elfcpp::R_SPARC_TLS_LE_HIX22: // Local-exec + case elfcpp::R_SPARC_TLS_LE_LOX10: + layout->set_has_static_tls(); + if (output_is_shared) + { + // We need to create a dynamic relocation. + gold_assert(lsym.get_st_type() != elfcpp::STT_SECTION); + unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + rela_dyn->add_symbolless_local_addend(object, r_sym, r_type, + output_section, data_shndx, + reloc.get_r_offset(), 0); + } + break; + } + } + break; + + // These are relocations which should only be seen by the + // dynamic linker, and should never be seen here. + case elfcpp::R_SPARC_COPY: + case elfcpp::R_SPARC_GLOB_DAT: + case elfcpp::R_SPARC_JMP_SLOT: + case elfcpp::R_SPARC_JMP_IREL: + case elfcpp::R_SPARC_RELATIVE: + case elfcpp::R_SPARC_IRELATIVE: + case elfcpp::R_SPARC_TLS_DTPMOD64: + case elfcpp::R_SPARC_TLS_DTPMOD32: + case elfcpp::R_SPARC_TLS_DTPOFF64: + case elfcpp::R_SPARC_TLS_DTPOFF32: + case elfcpp::R_SPARC_TLS_TPOFF64: + case elfcpp::R_SPARC_TLS_TPOFF32: + gold_error(_("%s: unexpected reloc %u in object file"), + object->name().c_str(), r_type); + break; + + default: + unsupported_reloc_local(object, r_type); + break; + } +} + +// Report an unsupported relocation against a global symbol. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::Scan::unsupported_reloc_global( + Sized_relobj_file<size, big_endian>* object, + unsigned int r_type, + Symbol* gsym) +{ + gold_error(_("%s: unsupported reloc %u against global symbol %s"), + object->name().c_str(), r_type, gsym->demangled_name().c_str()); +} + +// Scan a relocation for a global symbol. + +template<int size, bool big_endian> +inline void +Target_sparc<size, big_endian>::Scan::global( + Symbol_table* symtab, + Layout* layout, + Target_sparc<size, big_endian>* target, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + Output_section* output_section, + const elfcpp::Rela<size, big_endian>& reloc, + unsigned int r_type, + Symbol* gsym) +{ + unsigned int orig_r_type = r_type; + bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; + + // A reference to _GLOBAL_OFFSET_TABLE_ implies that we need a got + // section. We check here to avoid creating a dynamic reloc against + // _GLOBAL_OFFSET_TABLE_. + if (!target->has_got_section() + && strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) + target->got_section(symtab, layout); + + r_type &= 0xff; + + // A STT_GNU_IFUNC symbol may require a PLT entry. + if (is_ifunc + && this->reloc_needs_plt_for_ifunc(object, r_type)) + target->make_plt_entry(symtab, layout, gsym); + + switch (r_type) + { + case elfcpp::R_SPARC_NONE: + case elfcpp::R_SPARC_REGISTER: + case elfcpp::R_SPARC_GNU_VTINHERIT: + case elfcpp::R_SPARC_GNU_VTENTRY: + break; + + case elfcpp::R_SPARC_PLT64: + case elfcpp::R_SPARC_PLT32: + case elfcpp::R_SPARC_HIPLT22: + case elfcpp::R_SPARC_LOPLT10: + case elfcpp::R_SPARC_PCPLT32: + case elfcpp::R_SPARC_PCPLT22: + case elfcpp::R_SPARC_PCPLT10: + case elfcpp::R_SPARC_WPLT30: + // If the symbol is fully resolved, this is just a PC32 reloc. + // Otherwise we need a PLT entry. + if (gsym->final_value_is_known()) + break; + // If building a shared library, we can also skip the PLT entry + // if the symbol is defined in the output file and is protected + // or hidden. + if (gsym->is_defined() + && !gsym->is_from_dynobj() + && !gsym->is_preemptible()) + break; + target->make_plt_entry(symtab, layout, gsym); + break; + + case elfcpp::R_SPARC_DISP8: + case elfcpp::R_SPARC_DISP16: + case elfcpp::R_SPARC_DISP32: + case elfcpp::R_SPARC_DISP64: + case elfcpp::R_SPARC_PC_HH22: + case elfcpp::R_SPARC_PC_HM10: + case elfcpp::R_SPARC_PC_LM22: + case elfcpp::R_SPARC_PC10: + case elfcpp::R_SPARC_PC22: + case elfcpp::R_SPARC_WDISP30: + case elfcpp::R_SPARC_WDISP22: + case elfcpp::R_SPARC_WDISP19: + case elfcpp::R_SPARC_WDISP16: + case elfcpp::R_SPARC_WDISP10: + { + if (gsym->needs_plt_entry()) + target->make_plt_entry(symtab, layout, gsym); + // Make a dynamic relocation if necessary. + if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type))) + { + if (gsym->may_need_copy_reloc()) + { + target->copy_reloc(symtab, layout, object, + data_shndx, output_section, gsym, + reloc); + } + else + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + check_non_pic(object, r_type); + rela_dyn->add_global(gsym, orig_r_type, output_section, object, + data_shndx, reloc.get_r_offset(), + reloc.get_r_addend()); + } + } + } + break; + + case elfcpp::R_SPARC_UA64: + case elfcpp::R_SPARC_64: + case elfcpp::R_SPARC_HIX22: + case elfcpp::R_SPARC_LOX10: + case elfcpp::R_SPARC_H34: + case elfcpp::R_SPARC_H44: + case elfcpp::R_SPARC_M44: + case elfcpp::R_SPARC_L44: + case elfcpp::R_SPARC_HH22: + case elfcpp::R_SPARC_HM10: + case elfcpp::R_SPARC_LM22: + case elfcpp::R_SPARC_HI22: + case elfcpp::R_SPARC_LO10: + case elfcpp::R_SPARC_OLO10: + case elfcpp::R_SPARC_UA32: + case elfcpp::R_SPARC_32: + case elfcpp::R_SPARC_UA16: + case elfcpp::R_SPARC_16: + case elfcpp::R_SPARC_11: + case elfcpp::R_SPARC_10: + case elfcpp::R_SPARC_8: + case elfcpp::R_SPARC_7: + case elfcpp::R_SPARC_6: + case elfcpp::R_SPARC_5: + { + // Make a PLT entry if necessary. + if (gsym->needs_plt_entry()) + { + target->make_plt_entry(symtab, layout, gsym); + // Since this is not a PC-relative relocation, we may be + // taking the address of a function. In that case we need to + // set the entry in the dynamic symbol table to the address of + // the PLT entry. + if (gsym->is_from_dynobj() && !parameters->options().shared()) + gsym->set_needs_dynsym_value(); + } + // Make a dynamic relocation if necessary. + if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type))) + { + unsigned int r_off = reloc.get_r_offset(); + + // The assembler can sometimes emit unaligned relocations + // for dwarf2 cfi directives. + switch (r_type) + { + case elfcpp::R_SPARC_16: + if (r_off & 0x1) + orig_r_type = r_type = elfcpp::R_SPARC_UA16; + break; + case elfcpp::R_SPARC_32: + if (r_off & 0x3) + orig_r_type = r_type = elfcpp::R_SPARC_UA32; + break; + case elfcpp::R_SPARC_64: + if (r_off & 0x7) + orig_r_type = r_type = elfcpp::R_SPARC_UA64; + break; + case elfcpp::R_SPARC_UA16: + if (!(r_off & 0x1)) + orig_r_type = r_type = elfcpp::R_SPARC_16; + break; + case elfcpp::R_SPARC_UA32: + if (!(r_off & 0x3)) + orig_r_type = r_type = elfcpp::R_SPARC_32; + break; + case elfcpp::R_SPARC_UA64: + if (!(r_off & 0x7)) + orig_r_type = r_type = elfcpp::R_SPARC_64; + break; + } + + if (gsym->may_need_copy_reloc()) + { + target->copy_reloc(symtab, layout, object, + data_shndx, output_section, gsym, reloc); + } + else if (((size == 64 && r_type == elfcpp::R_SPARC_64) + || (size == 32 && r_type == elfcpp::R_SPARC_32)) + && gsym->type() == elfcpp::STT_GNU_IFUNC + && gsym->can_use_relative_reloc(false) + && !gsym->is_from_dynobj() + && !gsym->is_undefined() + && !gsym->is_preemptible()) + { + // Use an IRELATIVE reloc for a locally defined + // STT_GNU_IFUNC symbol. This makes a function + // address in a PIE executable match the address in a + // shared library that it links against. + Reloc_section* rela_dyn = + target->rela_ifunc_section(layout); + unsigned int r_type = elfcpp::R_SPARC_IRELATIVE; + rela_dyn->add_symbolless_global_addend(gsym, r_type, + output_section, object, + data_shndx, + reloc.get_r_offset(), + reloc.get_r_addend()); + } + else if ((r_type == elfcpp::R_SPARC_32 + || r_type == elfcpp::R_SPARC_64) + && gsym->can_use_relative_reloc(false)) + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, + output_section, object, + data_shndx, reloc.get_r_offset(), + reloc.get_r_addend(), is_ifunc); + } + else + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + + check_non_pic(object, r_type); + if (gsym->is_from_dynobj() + || gsym->is_undefined() + || gsym->is_preemptible()) + rela_dyn->add_global(gsym, orig_r_type, output_section, + object, data_shndx, + reloc.get_r_offset(), + reloc.get_r_addend()); + else + rela_dyn->add_symbolless_global_addend(gsym, orig_r_type, + output_section, + object, data_shndx, + reloc.get_r_offset(), + reloc.get_r_addend()); + } + } + } + break; + + case elfcpp::R_SPARC_GOTDATA_OP: + case elfcpp::R_SPARC_GOTDATA_OP_HIX22: + case elfcpp::R_SPARC_GOTDATA_OP_LOX10: + if (gsym->is_defined() + && !gsym->is_from_dynobj() + && !gsym->is_preemptible() + && !is_ifunc) + { + // We will optimize this into a GOT relative relocation + // and code transform the GOT load into an addition. + break; + } + case elfcpp::R_SPARC_GOT10: + case elfcpp::R_SPARC_GOT13: + case elfcpp::R_SPARC_GOT22: + { + // The symbol requires a GOT entry. + Output_data_got<size, big_endian>* got; + + got = target->got_section(symtab, layout); + if (gsym->final_value_is_known()) + { + // For a STT_GNU_IFUNC symbol we want the PLT address. + if (gsym->type() == elfcpp::STT_GNU_IFUNC) + got->add_global_plt(gsym, GOT_TYPE_STANDARD); + else + got->add_global(gsym, GOT_TYPE_STANDARD); + } + else + { + // If this symbol is not fully resolved, we need to add a + // GOT entry with a dynamic relocation. + bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; + + // Use a GLOB_DAT rather than a RELATIVE reloc if: + // + // 1) The symbol may be defined in some other module. + // + // 2) We are building a shared library and this is a + // protected symbol; using GLOB_DAT means that the dynamic + // linker can use the address of the PLT in the main + // executable when appropriate so that function address + // comparisons work. + // + // 3) This is a STT_GNU_IFUNC symbol in position dependent + // code, again so that function address comparisons work. + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + if (gsym->is_from_dynobj() + || gsym->is_undefined() + || gsym->is_preemptible() + || (gsym->visibility() == elfcpp::STV_PROTECTED + && parameters->options().shared()) + || (gsym->type() == elfcpp::STT_GNU_IFUNC + && parameters->options().output_is_position_independent() + && !gsym->is_forced_local())) + { + unsigned int r_type = elfcpp::R_SPARC_GLOB_DAT; + + // If this symbol is forced local, this relocation will + // not work properly. That's because ld.so on sparc + // (and 32-bit powerpc) expects st_value in the r_addend + // of relocations for STB_LOCAL symbols. Curiously the + // BFD linker does not promote global hidden symbols to be + // STB_LOCAL in the dynamic symbol table like Gold does. + gold_assert(!gsym->is_forced_local()); + got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, rela_dyn, + r_type); + } + else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) + { + unsigned int off = got->add_constant(0); + + gsym->set_got_offset(GOT_TYPE_STANDARD, off); + if (is_ifunc) + { + // Tell the dynamic linker to use the PLT address + // when resolving relocations. + if (gsym->is_from_dynobj() + && !parameters->options().shared()) + gsym->set_needs_dynsym_value(); + } + rela_dyn->add_global_relative(gsym, elfcpp::R_SPARC_RELATIVE, + got, off, 0, is_ifunc); + } + } + } + break; + + // These are initial tls relocs, which are expected when + // linking. + case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic + case elfcpp::R_SPARC_TLS_GD_LO10: + case elfcpp::R_SPARC_TLS_GD_ADD: + case elfcpp::R_SPARC_TLS_GD_CALL: + case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic + case elfcpp::R_SPARC_TLS_LDM_LO10: + case elfcpp::R_SPARC_TLS_LDM_ADD: + case elfcpp::R_SPARC_TLS_LDM_CALL: + case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic + case elfcpp::R_SPARC_TLS_LDO_LOX10: + case elfcpp::R_SPARC_TLS_LDO_ADD: + case elfcpp::R_SPARC_TLS_LE_HIX22: + case elfcpp::R_SPARC_TLS_LE_LOX10: + case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec + case elfcpp::R_SPARC_TLS_IE_LO10: + case elfcpp::R_SPARC_TLS_IE_LD: + case elfcpp::R_SPARC_TLS_IE_LDX: + case elfcpp::R_SPARC_TLS_IE_ADD: + { + const bool is_final = gsym->final_value_is_known(); + const tls::Tls_optimization optimized_type + = optimize_tls_reloc(is_final, r_type); + switch (r_type) + { + case elfcpp::R_SPARC_TLS_GD_HI22: // Global-dynamic + case elfcpp::R_SPARC_TLS_GD_LO10: + case elfcpp::R_SPARC_TLS_GD_ADD: + case elfcpp::R_SPARC_TLS_GD_CALL: + if (optimized_type == tls::TLSOPT_NONE) + { + // Create a pair of GOT entries for the module index and + // dtv-relative offset. + Output_data_got<size, big_endian>* got + = target->got_section(symtab, layout); + got->add_global_pair_with_rel(gsym, GOT_TYPE_TLS_PAIR, + target->rela_dyn_section(layout), + (size == 64 + ? elfcpp::R_SPARC_TLS_DTPMOD64 + : elfcpp::R_SPARC_TLS_DTPMOD32), + (size == 64 + ? elfcpp::R_SPARC_TLS_DTPOFF64 + : elfcpp::R_SPARC_TLS_DTPOFF32)); + + // Emit R_SPARC_WPLT30 against "__tls_get_addr" + if (r_type == elfcpp::R_SPARC_TLS_GD_CALL) + generate_tls_call(symtab, layout, target); + } + else if (optimized_type == tls::TLSOPT_TO_IE) + { + // Create a GOT entry for the tp-relative offset. + Output_data_got<size, big_endian>* got + = target->got_section(symtab, layout); + got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET, + target->rela_dyn_section(layout), + (size == 64 ? + elfcpp::R_SPARC_TLS_TPOFF64 : + elfcpp::R_SPARC_TLS_TPOFF32)); + } + else if (optimized_type != tls::TLSOPT_TO_LE) + unsupported_reloc_global(object, r_type, gsym); + break; + + case elfcpp::R_SPARC_TLS_LDM_HI22: // Local-dynamic + case elfcpp::R_SPARC_TLS_LDM_LO10: + case elfcpp::R_SPARC_TLS_LDM_ADD: + case elfcpp::R_SPARC_TLS_LDM_CALL: + if (optimized_type == tls::TLSOPT_NONE) + { + // Create a GOT entry for the module index. + target->got_mod_index_entry(symtab, layout, object); + + if (r_type == elfcpp::R_SPARC_TLS_LDM_CALL) + generate_tls_call(symtab, layout, target); + } + else if (optimized_type != tls::TLSOPT_TO_LE) + unsupported_reloc_global(object, r_type, gsym); + break; + + case elfcpp::R_SPARC_TLS_LDO_HIX22: // Alternate local-dynamic + case elfcpp::R_SPARC_TLS_LDO_LOX10: + case elfcpp::R_SPARC_TLS_LDO_ADD: + break; + + case elfcpp::R_SPARC_TLS_LE_HIX22: + case elfcpp::R_SPARC_TLS_LE_LOX10: + layout->set_has_static_tls(); + if (parameters->options().shared()) + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + rela_dyn->add_symbolless_global_addend(gsym, orig_r_type, + output_section, object, + data_shndx, reloc.get_r_offset(), + 0); + } + break; + + case elfcpp::R_SPARC_TLS_IE_HI22: // Initial-exec + case elfcpp::R_SPARC_TLS_IE_LO10: + case elfcpp::R_SPARC_TLS_IE_LD: + case elfcpp::R_SPARC_TLS_IE_LDX: + case elfcpp::R_SPARC_TLS_IE_ADD: + layout->set_has_static_tls(); + if (optimized_type == tls::TLSOPT_NONE) + { + // Create a GOT entry for the tp-relative offset. + Output_data_got<size, big_endian>* got + = target->got_section(symtab, layout); + got->add_global_with_rel(gsym, GOT_TYPE_TLS_OFFSET, + target->rela_dyn_section(layout), + (size == 64 + ? elfcpp::R_SPARC_TLS_TPOFF64 + : elfcpp::R_SPARC_TLS_TPOFF32)); + } + else if (optimized_type != tls::TLSOPT_TO_LE) + unsupported_reloc_global(object, r_type, gsym); + break; + } + } + break; + + // These are relocations which should only be seen by the + // dynamic linker, and should never be seen here. + case elfcpp::R_SPARC_COPY: + case elfcpp::R_SPARC_GLOB_DAT: + case elfcpp::R_SPARC_JMP_SLOT: + case elfcpp::R_SPARC_JMP_IREL: + case elfcpp::R_SPARC_RELATIVE: + case elfcpp::R_SPARC_IRELATIVE: + case elfcpp::R_SPARC_TLS_DTPMOD64: + case elfcpp::R_SPARC_TLS_DTPMOD32: + case elfcpp::R_SPARC_TLS_DTPOFF64: + case elfcpp::R_SPARC_TLS_DTPOFF32: + case elfcpp::R_SPARC_TLS_TPOFF64: + case elfcpp::R_SPARC_TLS_TPOFF32: + gold_error(_("%s: unexpected reloc %u in object file"), + object->name().c_str(), r_type); + break; + + default: + unsupported_reloc_global(object, r_type, gsym); + break; + } +} + +// Process relocations for gc. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::gc_process_relocs( + Symbol_table* symtab, + Layout* layout, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + unsigned int, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + bool needs_special_offset_handling, + size_t local_symbol_count, + const unsigned char* plocal_symbols) +{ + typedef Target_sparc<size, big_endian> Sparc; + typedef typename Target_sparc<size, big_endian>::Scan Scan; + + gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan, + typename Target_sparc::Relocatable_size_for_reloc>( + symtab, + layout, + this, + object, + data_shndx, + prelocs, + reloc_count, + output_section, + needs_special_offset_handling, + local_symbol_count, + plocal_symbols); +} + +// Scan relocations for a section. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::scan_relocs( + Symbol_table* symtab, + Layout* layout, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + bool needs_special_offset_handling, + size_t local_symbol_count, + const unsigned char* plocal_symbols) +{ + typedef Target_sparc<size, big_endian> Sparc; + typedef typename Target_sparc<size, big_endian>::Scan Scan; + + if (sh_type == elfcpp::SHT_REL) + { + gold_error(_("%s: unsupported REL reloc section"), + object->name().c_str()); + return; + } + + gold::scan_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>( + symtab, + layout, + this, + object, + data_shndx, + prelocs, + reloc_count, + output_section, + needs_special_offset_handling, + local_symbol_count, + plocal_symbols); +} + +// Finalize the sections. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::do_finalize_sections( + Layout* layout, + const Input_objects*, + Symbol_table* symtab) +{ + if (this->plt_) + this->plt_->emit_pending_ifunc_relocs(); + + // Fill in some more dynamic tags. + const Reloc_section* rel_plt = (this->plt_ == NULL + ? NULL + : this->plt_->rel_plt()); + layout->add_target_dynamic_tags(false, this->plt_, rel_plt, + this->rela_dyn_, true, true); + + // Emit any relocs we saved in an attempt to avoid generating COPY + // relocs. + if (this->copy_relocs_.any_saved_relocs()) + this->copy_relocs_.emit(this->rela_dyn_section(layout)); + + if (parameters->doing_static_link() + && (this->plt_ == NULL || !this->plt_->has_ifunc_section())) + { + // If linking statically, make sure that the __rela_iplt symbols + // were defined if necessary, even if we didn't create a PLT. + static const Define_symbol_in_segment syms[] = + { + { + "__rela_iplt_start", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_W, // segment_flags_set + elfcpp::PF(0), // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_HIDDEN, // visibility + 0, // nonvis + Symbol::SEGMENT_START, // offset_from_base + true // only_if_ref + }, + { + "__rela_iplt_end", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_W, // segment_flags_set + elfcpp::PF(0), // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_HIDDEN, // visibility + 0, // nonvis + Symbol::SEGMENT_START, // offset_from_base + true // only_if_ref + } + }; + + symtab->define_symbols(layout, 2, syms, + layout->script_options()->saw_sections_clause()); + } +} + +// Perform a relocation. + +template<int size, bool big_endian> +inline bool +Target_sparc<size, big_endian>::Relocate::relocate( + const Relocate_info<size, big_endian>* relinfo, + Target_sparc* target, + Output_section*, + size_t relnum, + const elfcpp::Rela<size, big_endian>& rela, + unsigned int r_type, + const Sized_symbol<size>* gsym, + const Symbol_value<size>* psymval, + unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr address, + section_size_type view_size) +{ + bool orig_is_ifunc = psymval->is_ifunc_symbol(); + r_type &= 0xff; + + if (this->ignore_gd_add_) + { + if (r_type != elfcpp::R_SPARC_TLS_GD_ADD) + gold_error_at_location(relinfo, relnum, rela.get_r_offset(), + _("missing expected TLS relocation")); + else + { + this->ignore_gd_add_ = false; + return false; + } + } + + if (view == NULL) + return true; + + if (this->reloc_adjust_addr_ == view) + view -= 4; + + typedef Sparc_relocate_functions<size, big_endian> Reloc; + const Sized_relobj_file<size, big_endian>* object = relinfo->object; + + // Pick the value to use for symbols defined in shared objects. + Symbol_value<size> symval; + if (gsym != NULL + && gsym->use_plt_offset(Scan::get_reference_flags(r_type))) + { + elfcpp::Elf_Xword value; + + value = target->plt_address_for_global(gsym); + + symval.set_output_value(value); + + psymval = &symval; + } + else if (gsym == NULL && orig_is_ifunc) + { + unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); + if (object->local_has_plt_offset(r_sym)) + { + symval.set_output_value(target->plt_address_for_local(object, r_sym)); + psymval = &symval; + } + } + + const elfcpp::Elf_Xword addend = rela.get_r_addend(); + + // Get the GOT offset if needed. Unlike i386 and x86_64, our GOT + // pointer points to the beginning, not the end, of the table. + // So we just use the plain offset. + unsigned int got_offset = 0; + bool gdop_valid = false; + switch (r_type) + { + case elfcpp::R_SPARC_GOTDATA_OP: + case elfcpp::R_SPARC_GOTDATA_OP_HIX22: + case elfcpp::R_SPARC_GOTDATA_OP_LOX10: + // If this is local, we did not create a GOT entry because we + // intend to transform this into a GOT relative relocation. + if (gsym == NULL + || (gsym->is_defined() + && !gsym->is_from_dynobj() + && !gsym->is_preemptible() + && !orig_is_ifunc)) + { + got_offset = psymval->value(object, 0) - target->got_address(); + gdop_valid = true; + break; + } + case elfcpp::R_SPARC_GOT10: + case elfcpp::R_SPARC_GOT13: + case elfcpp::R_SPARC_GOT22: + if (gsym != NULL) + { + gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); + got_offset = gsym->got_offset(GOT_TYPE_STANDARD); + } + else + { + unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); + gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); + got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); + } + break; + + default: + break; + } + + switch (r_type) + { + case elfcpp::R_SPARC_NONE: + case elfcpp::R_SPARC_REGISTER: + case elfcpp::R_SPARC_GNU_VTINHERIT: + case elfcpp::R_SPARC_GNU_VTENTRY: + break; + + case elfcpp::R_SPARC_8: + Relocate_functions<size, big_endian>::rela8(view, object, + psymval, addend); + break; + + case elfcpp::R_SPARC_16: + if (rela.get_r_offset() & 0x1) + { + // The assembler can sometimes emit unaligned relocations + // for dwarf2 cfi directives. + Reloc::ua16(view, object, psymval, addend); + } + else + Relocate_functions<size, big_endian>::rela16(view, object, + psymval, addend); + break; + + case elfcpp::R_SPARC_32: + if (!parameters->options().output_is_position_independent()) + { + if (rela.get_r_offset() & 0x3) + { + // The assembler can sometimes emit unaligned relocations + // for dwarf2 cfi directives. + Reloc::ua32(view, object, psymval, addend); + } + else + Relocate_functions<size, big_endian>::rela32(view, object, + psymval, addend); + } + break; + + case elfcpp::R_SPARC_DISP8: + Reloc::disp8(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_DISP16: + Reloc::disp16(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_DISP32: + Reloc::disp32(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_DISP64: + Reloc::disp64(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_WDISP30: + case elfcpp::R_SPARC_WPLT30: + Reloc::wdisp30(view, object, psymval, addend, address); + if (target->may_relax()) + relax_call(target, view, rela, view_size); + break; + + case elfcpp::R_SPARC_WDISP22: + Reloc::wdisp22(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_WDISP19: + Reloc::wdisp19(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_WDISP16: + Reloc::wdisp16(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_WDISP10: + Reloc::wdisp10(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_HI22: + Reloc::hi22(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_22: + Reloc::rela32_22(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_13: + Reloc::rela32_13(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_LO10: + Reloc::lo10(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_GOT10: + Reloc::lo10(view, got_offset, addend); + break; + + case elfcpp::R_SPARC_GOTDATA_OP: + if (gdop_valid) + { + typedef typename elfcpp::Swap<32, true>::Valtype Insntype; + Insntype* wv = reinterpret_cast<Insntype*>(view); + Insntype val; + + // {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd + val = elfcpp::Swap<32, true>::readval(wv); + val = 0x80000000 | (val & 0x3e07c01f); + elfcpp::Swap<32, true>::writeval(wv, val); + } + break; + + case elfcpp::R_SPARC_GOTDATA_OP_LOX10: + if (gdop_valid) + { + Reloc::gdop_lox10(view, got_offset, addend); + break; + } + /* Fall through. */ + case elfcpp::R_SPARC_GOT13: + Reloc::rela32_13(view, got_offset, addend); + break; + + case elfcpp::R_SPARC_GOTDATA_OP_HIX22: + if (gdop_valid) + { + Reloc::gdop_hix22(view, got_offset, addend); + break; + } + /* Fall through. */ + case elfcpp::R_SPARC_GOT22: + Reloc::hi22(view, got_offset, addend); + break; + + case elfcpp::R_SPARC_PC10: + Reloc::pc10(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_PC22: + Reloc::pc22(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_TLS_DTPOFF32: + case elfcpp::R_SPARC_UA32: + Reloc::ua32(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_PLT64: + Relocate_functions<size, big_endian>::rela64(view, object, + psymval, addend); + break; + + case elfcpp::R_SPARC_PLT32: + Relocate_functions<size, big_endian>::rela32(view, object, + psymval, addend); + break; + + case elfcpp::R_SPARC_HIPLT22: + Reloc::hi22(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_LOPLT10: + Reloc::lo10(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_PCPLT32: + Reloc::disp32(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_PCPLT22: + Reloc::pcplt22(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_PCPLT10: + Reloc::lo10(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_64: + if (!parameters->options().output_is_position_independent()) + { + if (rela.get_r_offset() & 0x7) + { + // The assembler can sometimes emit unaligned relocations + // for dwarf2 cfi directives. + Reloc::ua64(view, object, psymval, addend); + } + else + Relocate_functions<size, big_endian>::rela64(view, object, + psymval, addend); + } + break; + + case elfcpp::R_SPARC_OLO10: + { + unsigned int addend2 = rela.get_r_info() & 0xffffffff; + addend2 = ((addend2 >> 8) ^ 0x800000) - 0x800000; + Reloc::olo10(view, object, psymval, addend, addend2); + } + break; + + case elfcpp::R_SPARC_HH22: + Reloc::hh22(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_PC_HH22: + Reloc::pc_hh22(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_HM10: + Reloc::hm10(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_PC_HM10: + Reloc::pc_hm10(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_LM22: + Reloc::hi22(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_PC_LM22: + Reloc::pcplt22(view, object, psymval, addend, address); + break; + + case elfcpp::R_SPARC_11: + Reloc::rela32_11(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_10: + Reloc::rela32_10(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_7: + Reloc::rela32_7(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_6: + Reloc::rela32_6(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_5: + Reloc::rela32_5(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_HIX22: + Reloc::hix22(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_LOX10: + Reloc::lox10(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_H34: + Reloc::h34(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_H44: + Reloc::h44(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_M44: + Reloc::m44(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_L44: + Reloc::l44(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_TLS_DTPOFF64: + case elfcpp::R_SPARC_UA64: + Reloc::ua64(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_UA16: + Reloc::ua16(view, object, psymval, addend); + break; + + case elfcpp::R_SPARC_TLS_GD_HI22: + case elfcpp::R_SPARC_TLS_GD_LO10: + case elfcpp::R_SPARC_TLS_GD_ADD: + case elfcpp::R_SPARC_TLS_GD_CALL: + case elfcpp::R_SPARC_TLS_LDM_HI22: + case elfcpp::R_SPARC_TLS_LDM_LO10: + case elfcpp::R_SPARC_TLS_LDM_ADD: + case elfcpp::R_SPARC_TLS_LDM_CALL: + case elfcpp::R_SPARC_TLS_LDO_HIX22: + case elfcpp::R_SPARC_TLS_LDO_LOX10: + case elfcpp::R_SPARC_TLS_LDO_ADD: + case elfcpp::R_SPARC_TLS_IE_HI22: + case elfcpp::R_SPARC_TLS_IE_LO10: + case elfcpp::R_SPARC_TLS_IE_LD: + case elfcpp::R_SPARC_TLS_IE_LDX: + case elfcpp::R_SPARC_TLS_IE_ADD: + case elfcpp::R_SPARC_TLS_LE_HIX22: + case elfcpp::R_SPARC_TLS_LE_LOX10: + this->relocate_tls(relinfo, target, relnum, rela, + r_type, gsym, psymval, view, + address, view_size); + break; + + case elfcpp::R_SPARC_COPY: + case elfcpp::R_SPARC_GLOB_DAT: + case elfcpp::R_SPARC_JMP_SLOT: + case elfcpp::R_SPARC_JMP_IREL: + case elfcpp::R_SPARC_RELATIVE: + case elfcpp::R_SPARC_IRELATIVE: + // These are outstanding tls relocs, which are unexpected when + // linking. + case elfcpp::R_SPARC_TLS_DTPMOD64: + case elfcpp::R_SPARC_TLS_DTPMOD32: + case elfcpp::R_SPARC_TLS_TPOFF64: + case elfcpp::R_SPARC_TLS_TPOFF32: + gold_error_at_location(relinfo, relnum, rela.get_r_offset(), + _("unexpected reloc %u in object file"), + r_type); + break; + + default: + gold_error_at_location(relinfo, relnum, rela.get_r_offset(), + _("unsupported reloc %u"), + r_type); + break; + } + + return true; +} + +// Perform a TLS relocation. + +template<int size, bool big_endian> +inline void +Target_sparc<size, big_endian>::Relocate::relocate_tls( + const Relocate_info<size, big_endian>* relinfo, + Target_sparc<size, big_endian>* target, + size_t relnum, + const elfcpp::Rela<size, big_endian>& rela, + unsigned int r_type, + const Sized_symbol<size>* gsym, + const Symbol_value<size>* psymval, + unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr address, + section_size_type) +{ + Output_segment* tls_segment = relinfo->layout->tls_segment(); + typedef Sparc_relocate_functions<size, big_endian> Reloc; + const Sized_relobj_file<size, big_endian>* object = relinfo->object; + typedef typename elfcpp::Swap<32, true>::Valtype Insntype; + + const elfcpp::Elf_Xword addend = rela.get_r_addend(); + typename elfcpp::Elf_types<size>::Elf_Addr value = psymval->value(object, 0); + + const bool is_final = + (gsym == NULL + ? !parameters->options().output_is_position_independent() + : gsym->final_value_is_known()); + const tls::Tls_optimization optimized_type + = optimize_tls_reloc(is_final, r_type); + + switch (r_type) + { + case elfcpp::R_SPARC_TLS_GD_HI22: + case elfcpp::R_SPARC_TLS_GD_LO10: + case elfcpp::R_SPARC_TLS_GD_ADD: + case elfcpp::R_SPARC_TLS_GD_CALL: + if (optimized_type == tls::TLSOPT_TO_LE) + { + Insntype* wv = reinterpret_cast<Insntype*>(view); + Insntype val; + + value -= tls_segment->memsz(); + + switch (r_type) + { + case elfcpp::R_SPARC_TLS_GD_HI22: + // TLS_GD_HI22 --> TLS_LE_HIX22 + Reloc::hix22(view, value, addend); + break; + + case elfcpp::R_SPARC_TLS_GD_LO10: + // TLS_GD_LO10 --> TLS_LE_LOX10 + Reloc::lox10(view, value, addend); + break; + + case elfcpp::R_SPARC_TLS_GD_ADD: + // add %reg1, %reg2, %reg3 --> mov %g7, %reg2, %reg3 + val = elfcpp::Swap<32, true>::readval(wv); + val = (val & ~0x7c000) | 0x1c000; + elfcpp::Swap<32, true>::writeval(wv, val); + break; + case elfcpp::R_SPARC_TLS_GD_CALL: + // call __tls_get_addr --> nop + elfcpp::Swap<32, true>::writeval(wv, sparc_nop); + break; + } + break; + } + else + { + unsigned int got_type = (optimized_type == tls::TLSOPT_TO_IE + ? GOT_TYPE_TLS_OFFSET + : GOT_TYPE_TLS_PAIR); + if (gsym != NULL) + { + gold_assert(gsym->has_got_offset(got_type)); + value = gsym->got_offset(got_type); + } + else + { + unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); + gold_assert(object->local_has_got_offset(r_sym, got_type)); + value = object->local_got_offset(r_sym, got_type); + } + if (optimized_type == tls::TLSOPT_TO_IE) + { + Insntype* wv = reinterpret_cast<Insntype*>(view); + Insntype val; + + switch (r_type) + { + case elfcpp::R_SPARC_TLS_GD_HI22: + // TLS_GD_HI22 --> TLS_IE_HI22 + Reloc::hi22(view, value, addend); + break; + + case elfcpp::R_SPARC_TLS_GD_LO10: + // TLS_GD_LO10 --> TLS_IE_LO10 + Reloc::lo10(view, value, addend); + break; + + case elfcpp::R_SPARC_TLS_GD_ADD: + // add %reg1, %reg2, %reg3 --> ld [%reg1 + %reg2], %reg3 + val = elfcpp::Swap<32, true>::readval(wv); + + if (size == 64) + val |= 0xc0580000; + else + val |= 0xc0000000; + + elfcpp::Swap<32, true>::writeval(wv, val); + break; + + case elfcpp::R_SPARC_TLS_GD_CALL: + // The compiler can put the TLS_GD_ADD instruction + // into the delay slot of the call. If so, we need + // to transpose the two instructions so that the + // new sequence works properly. + // + // The test we use is if the instruction in the + // delay slot is an add with destination register + // equal to %o0 + val = elfcpp::Swap<32, true>::readval(wv + 1); + if ((val & 0x81f80000) == 0x80000000 + && ((val >> 25) & 0x1f) == 0x8) + { + if (size == 64) + val |= 0xc0580000; + else + val |= 0xc0000000; + + elfcpp::Swap<32, true>::writeval(wv, val); + + wv += 1; + this->ignore_gd_add_ = true; + } + else + { + // Even if the delay slot isn't the TLS_GD_ADD + // instruction, we still have to handle the case + // where it sets up %o0 in some other way. + elfcpp::Swap<32, true>::writeval(wv, val); + wv += 1; + this->reloc_adjust_addr_ = view + 4; + } + // call __tls_get_addr --> add %g7, %o0, %o0 + elfcpp::Swap<32, true>::writeval(wv, 0x9001c008); + break; + } + break; + } + else if (optimized_type == tls::TLSOPT_NONE) + { + switch (r_type) + { + case elfcpp::R_SPARC_TLS_GD_HI22: + Reloc::hi22(view, value, addend); + break; + case elfcpp::R_SPARC_TLS_GD_LO10: + Reloc::lo10(view, value, addend); + break; + case elfcpp::R_SPARC_TLS_GD_ADD: + break; + case elfcpp::R_SPARC_TLS_GD_CALL: + { + Symbol_value<size> symval; + elfcpp::Elf_Xword value; + Symbol* tsym; + + tsym = target->tls_get_addr_sym_; + gold_assert(tsym); + value = (target->plt_section()->address() + + tsym->plt_offset()); + symval.set_output_value(value); + Reloc::wdisp30(view, object, &symval, addend, address); + } + break; + } + break; + } + } + gold_error_at_location(relinfo, relnum, rela.get_r_offset(), + _("unsupported reloc %u"), + r_type); + break; + + case elfcpp::R_SPARC_TLS_LDM_HI22: + case elfcpp::R_SPARC_TLS_LDM_LO10: + case elfcpp::R_SPARC_TLS_LDM_ADD: + case elfcpp::R_SPARC_TLS_LDM_CALL: + if (optimized_type == tls::TLSOPT_TO_LE) + { + Insntype* wv = reinterpret_cast<Insntype*>(view); + + switch (r_type) + { + case elfcpp::R_SPARC_TLS_LDM_HI22: + case elfcpp::R_SPARC_TLS_LDM_LO10: + case elfcpp::R_SPARC_TLS_LDM_ADD: + elfcpp::Swap<32, true>::writeval(wv, sparc_nop); + break; + + case elfcpp::R_SPARC_TLS_LDM_CALL: + elfcpp::Swap<32, true>::writeval(wv, sparc_mov_g0_o0); + break; + } + break; + } + else if (optimized_type == tls::TLSOPT_NONE) + { + // Relocate the field with the offset of the GOT entry for + // the module index. + unsigned int got_offset; + + got_offset = target->got_mod_index_entry(NULL, NULL, NULL); + switch (r_type) + { + case elfcpp::R_SPARC_TLS_LDM_HI22: + Reloc::hi22(view, got_offset, addend); + break; + case elfcpp::R_SPARC_TLS_LDM_LO10: + Reloc::lo10(view, got_offset, addend); + break; + case elfcpp::R_SPARC_TLS_LDM_ADD: + break; + case elfcpp::R_SPARC_TLS_LDM_CALL: + { + Symbol_value<size> symval; + elfcpp::Elf_Xword value; + Symbol* tsym; + + tsym = target->tls_get_addr_sym_; + gold_assert(tsym); + value = (target->plt_section()->address() + + tsym->plt_offset()); + symval.set_output_value(value); + Reloc::wdisp30(view, object, &symval, addend, address); + } + break; + } + break; + } + gold_error_at_location(relinfo, relnum, rela.get_r_offset(), + _("unsupported reloc %u"), + r_type); + break; + + // These relocs can appear in debugging sections, in which case + // we won't see the TLS_LDM relocs. The local_dynamic_type + // field tells us this. + case elfcpp::R_SPARC_TLS_LDO_HIX22: + if (optimized_type == tls::TLSOPT_TO_LE) + { + value -= tls_segment->memsz(); + Reloc::hix22(view, value, addend); + } + else + Reloc::ldo_hix22(view, value, addend); + break; + case elfcpp::R_SPARC_TLS_LDO_LOX10: + if (optimized_type == tls::TLSOPT_TO_LE) + { + value -= tls_segment->memsz(); + Reloc::lox10(view, value, addend); + } + else + Reloc::ldo_lox10(view, value, addend); + break; + case elfcpp::R_SPARC_TLS_LDO_ADD: + if (optimized_type == tls::TLSOPT_TO_LE) + { + Insntype* wv = reinterpret_cast<Insntype*>(view); + Insntype val; + + // add %reg1, %reg2, %reg3 --> add %g7, %reg2, %reg3 + val = elfcpp::Swap<32, true>::readval(wv); + val = (val & ~0x7c000) | 0x1c000; + elfcpp::Swap<32, true>::writeval(wv, val); + } + break; + + // When optimizing IE --> LE, the only relocation that is handled + // differently is R_SPARC_TLS_IE_LD, it is rewritten from + // 'ld{,x} [rs1 + rs2], rd' into 'mov rs2, rd' or simply a NOP is + // rs2 and rd are the same. + case elfcpp::R_SPARC_TLS_IE_LD: + case elfcpp::R_SPARC_TLS_IE_LDX: + if (optimized_type == tls::TLSOPT_TO_LE) + { + Insntype* wv = reinterpret_cast<Insntype*>(view); + Insntype val = elfcpp::Swap<32, true>::readval(wv); + Insntype rs2 = val & 0x1f; + Insntype rd = (val >> 25) & 0x1f; + + if (rs2 == rd) + val = sparc_nop; + else + val = sparc_mov | (val & 0x3e00001f); + + elfcpp::Swap<32, true>::writeval(wv, val); + } + break; + + case elfcpp::R_SPARC_TLS_IE_HI22: + case elfcpp::R_SPARC_TLS_IE_LO10: + if (optimized_type == tls::TLSOPT_TO_LE) + { + value -= tls_segment->memsz(); + switch (r_type) + { + case elfcpp::R_SPARC_TLS_IE_HI22: + // IE_HI22 --> LE_HIX22 + Reloc::hix22(view, value, addend); + break; + case elfcpp::R_SPARC_TLS_IE_LO10: + // IE_LO10 --> LE_LOX10 + Reloc::lox10(view, value, addend); + break; + } + break; + } + else if (optimized_type == tls::TLSOPT_NONE) + { + // Relocate the field with the offset of the GOT entry for + // the tp-relative offset of the symbol. + if (gsym != NULL) + { + gold_assert(gsym->has_got_offset(GOT_TYPE_TLS_OFFSET)); + value = gsym->got_offset(GOT_TYPE_TLS_OFFSET); + } + else + { + unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); + gold_assert(object->local_has_got_offset(r_sym, + GOT_TYPE_TLS_OFFSET)); + value = object->local_got_offset(r_sym, + GOT_TYPE_TLS_OFFSET); + } + switch (r_type) + { + case elfcpp::R_SPARC_TLS_IE_HI22: + Reloc::hi22(view, value, addend); + break; + case elfcpp::R_SPARC_TLS_IE_LO10: + Reloc::lo10(view, value, addend); + break; + } + break; + } + gold_error_at_location(relinfo, relnum, rela.get_r_offset(), + _("unsupported reloc %u"), + r_type); + break; + + case elfcpp::R_SPARC_TLS_IE_ADD: + // This seems to be mainly so that we can find the addition + // instruction if there is one. There doesn't seem to be any + // actual relocation to apply. + break; + + case elfcpp::R_SPARC_TLS_LE_HIX22: + // If we're creating a shared library, a dynamic relocation will + // have been created for this location, so do not apply it now. + if (!parameters->options().shared()) + { + value -= tls_segment->memsz(); + Reloc::hix22(view, value, addend); + } + break; + + case elfcpp::R_SPARC_TLS_LE_LOX10: + // If we're creating a shared library, a dynamic relocation will + // have been created for this location, so do not apply it now. + if (!parameters->options().shared()) + { + value -= tls_segment->memsz(); + Reloc::lox10(view, value, addend); + } + break; + } +} + +// Relax a call instruction. + +template<int size, bool big_endian> +inline void +Target_sparc<size, big_endian>::Relocate::relax_call( + Target_sparc<size, big_endian>* target, + unsigned char* view, + const elfcpp::Rela<size, big_endian>& rela, + section_size_type view_size) +{ + typedef typename elfcpp::Swap<32, true>::Valtype Insntype; + Insntype *wv = reinterpret_cast<Insntype*>(view); + Insntype call_insn, delay_insn, set_insn; + uint32_t op3, reg, off; + + // This code tries to relax call instructions that meet + // certain criteria. + // + // The first criteria is that the call must be such that the return + // address which the call writes into %o7 is unused. Two sequences + // meet this criteria, and are used to implement tail calls. + // + // Leaf function tail call: + // + // or %o7, %g0, %ANY_REG + // call FUNC + // or %ANY_REG, %g0, %o7 + // + // Non-leaf function tail call: + // + // call FUNC + // restore + // + // The second criteria is that the call destination is close. If + // the displacement can fit in a signed 22-bit immediate field of a + // pre-V9 branch, we can do it. If we are generating a 64-bit + // object or a 32-bit object with ELF machine type EF_SPARC32PLUS, + // and the displacement fits in a signed 19-bit immediate field, + // then we can use a V9 branch. + + // Make sure the delay instruction can be safely accessed. + if (rela.get_r_offset() + 8 > view_size) + return; + + call_insn = elfcpp::Swap<32, true>::readval(wv); + delay_insn = elfcpp::Swap<32, true>::readval(wv + 1); + + // Make sure it is really a call instruction. + if (((call_insn >> 30) & 0x3) != 1) + return; + + if (((delay_insn >> 30) & 0x3) != 2) + return; + + // Accept only a restore or an integer arithmetic operation whose + // sole side effect is to write the %o7 register (and perhaps set + // the condition codes, which are considered clobbered across + // function calls). + // + // For example, we don't want to match a tagged addition or + // subtraction. We also don't want to match something like a + // divide. + // + // Specifically we accept add{,cc}, and{,cc}, or{,cc}, + // xor{,cc}, sub{,cc}, andn{,cc}, orn{,cc}, and xnor{,cc}. + + op3 = (delay_insn >> 19) & 0x3f; + reg = (delay_insn >> 25) & 0x1f; + if (op3 != 0x3d + && ((op3 & 0x28) != 0 || reg != 15)) + return; + + // For non-restore instructions, make sure %o7 isn't + // an input. + if (op3 != 0x3d) + { + // First check RS1 + reg = (delay_insn >> 14) & 0x15; + if (reg == 15) + return; + + // And if non-immediate, check RS2 + if (((delay_insn >> 13) & 1) == 0) + { + reg = (delay_insn & 0x1f); + if (reg == 15) + return; + } + } + + // Now check the branch distance. We are called after the + // call has been relocated, so we just have to peek at the + // offset contained in the instruction. + off = call_insn & 0x3fffffff; + if ((off & 0x3fe00000) != 0 + && (off & 0x3fe00000) != 0x3fe00000) + return; + + if ((size == 64 || target->elf_machine_ == elfcpp::EM_SPARC32PLUS) + && ((off & 0x3c0000) == 0 + || (off & 0x3c0000) == 0x3c0000)) + { + // ba,pt %xcc, FUNC + call_insn = 0x10680000 | (off & 0x07ffff); + } + else + { + // ba FUNC + call_insn = 0x10800000 | (off & 0x3fffff); + } + elfcpp::Swap<32, true>::writeval(wv, call_insn); + + // See if we can NOP out the delay slot instruction. We peek + // at the instruction before the call to make sure we're dealing + // with exactly the: + // + // or %o7, %g0, %ANY_REG + // call + // or %ANY_REG, %g0, %o7 + // + // case. Otherwise this might be a tricky piece of hand written + // assembler calculating %o7 in some non-trivial way, and therefore + // we can't be sure that NOP'ing out the delay slot is safe. + if (op3 == 0x02 + && rela.get_r_offset() >= 4) + { + if ((delay_insn & ~(0x1f << 14)) != 0x9e100000) + return; + + set_insn = elfcpp::Swap<32, true>::readval(wv - 1); + if ((set_insn & ~(0x1f << 25)) != 0x8013c000) + return; + + reg = (set_insn >> 25) & 0x1f; + if (reg == 0 || reg == 15) + return; + if (reg != ((delay_insn >> 14) & 0x1f)) + return; + + // All tests pass, nop it out. + elfcpp::Swap<32, true>::writeval(wv + 1, sparc_nop); + } +} + +// Relocate section data. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::relocate_section( + const Relocate_info<size, big_endian>* relinfo, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + bool needs_special_offset_handling, + unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr address, + section_size_type view_size, + const Reloc_symbol_changes* reloc_symbol_changes) +{ + typedef Target_sparc<size, big_endian> Sparc; + typedef typename Target_sparc<size, big_endian>::Relocate Sparc_relocate; + + gold_assert(sh_type == elfcpp::SHT_RELA); + + gold::relocate_section<size, big_endian, Sparc, elfcpp::SHT_RELA, + Sparc_relocate, gold::Default_comdat_behavior>( + relinfo, + this, + prelocs, + reloc_count, + output_section, + needs_special_offset_handling, + view, + address, + view_size, + reloc_symbol_changes); +} + +// Return the size of a relocation while scanning during a relocatable +// link. + +template<int size, bool big_endian> +unsigned int +Target_sparc<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc( + unsigned int, + Relobj*) +{ + // We are always SHT_RELA, so we should never get here. + gold_unreachable(); + return 0; +} + +// Scan the relocs during a relocatable link. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::scan_relocatable_relocs( + Symbol_table* symtab, + Layout* layout, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + bool needs_special_offset_handling, + size_t local_symbol_count, + const unsigned char* plocal_symbols, + Relocatable_relocs* rr) +{ + gold_assert(sh_type == elfcpp::SHT_RELA); + + typedef gold::Default_scan_relocatable_relocs<elfcpp::SHT_RELA, + Relocatable_size_for_reloc> Scan_relocatable_relocs; + + gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA, + Scan_relocatable_relocs>( + symtab, + layout, + object, + data_shndx, + prelocs, + reloc_count, + output_section, + needs_special_offset_handling, + local_symbol_count, + plocal_symbols, + rr); +} + +// Emit relocations for a section. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::relocate_relocs( + const Relocate_info<size, big_endian>* relinfo, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, + const Relocatable_relocs* rr, + unsigned char* view, + typename elfcpp::Elf_types<size>::Elf_Addr view_address, + section_size_type view_size, + unsigned char* reloc_view, + section_size_type reloc_view_size) +{ + gold_assert(sh_type == elfcpp::SHT_RELA); + + gold::relocate_relocs<size, big_endian, elfcpp::SHT_RELA>( + relinfo, + prelocs, + reloc_count, + output_section, + offset_in_output_section, + rr, + view, + view_address, + view_size, + reloc_view, + reloc_view_size); +} + +// Return the value to use for a dynamic which requires special +// treatment. This is how we support equality comparisons of function +// pointers across shared library boundaries, as described in the +// processor specific ABI supplement. + +template<int size, bool big_endian> +uint64_t +Target_sparc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const +{ + gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); + return this->plt_section()->address() + gsym->plt_offset(); +} + +// do_make_elf_object to override the same function in the base class. +// We need to use a target-specific sub-class of +// Sized_relobj_file<size, big_endian> to process SPARC specific bits +// of the ELF headers. Hence we need to have our own ELF object creation. + +template<int size, bool big_endian> +Object* +Target_sparc<size, big_endian>::do_make_elf_object( + const std::string& name, + Input_file* input_file, + off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) +{ + elfcpp::Elf_Half machine = ehdr.get_e_machine(); + elfcpp::Elf_Word flags = ehdr.get_e_flags(); + elfcpp::Elf_Word omm, mm; + + switch (machine) + { + case elfcpp::EM_SPARC32PLUS: + this->elf_machine_ = elfcpp::EM_SPARC32PLUS; + break; + + case elfcpp::EM_SPARC: + case elfcpp::EM_SPARCV9: + break; + + default: + break; + } + + if (!this->elf_flags_set_) + { + this->elf_flags_ = flags; + this->elf_flags_set_ = true; + } + else + { + // Accumulate cpu feature bits. + this->elf_flags_ |= (flags & (elfcpp::EF_SPARC_32PLUS + | elfcpp::EF_SPARC_SUN_US1 + | elfcpp::EF_SPARC_HAL_R1 + | elfcpp::EF_SPARC_SUN_US3)); + + // Bump the memory model setting to the most restrictive + // one we encounter. + omm = (this->elf_flags_ & elfcpp::EF_SPARCV9_MM); + mm = (flags & elfcpp::EF_SPARCV9_MM); + if (omm != mm) + { + if (mm == elfcpp::EF_SPARCV9_TSO) + { + this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM; + this->elf_flags_ |= elfcpp::EF_SPARCV9_TSO; + } + else if (mm == elfcpp::EF_SPARCV9_PSO + && omm == elfcpp::EF_SPARCV9_RMO) + { + this->elf_flags_ &= ~elfcpp::EF_SPARCV9_MM; + this->elf_flags_ |= elfcpp::EF_SPARCV9_PSO; + } + } + } + + // Validate that the little-endian flag matches how we've + // been instantiated. + if (!(flags & elfcpp::EF_SPARC_LEDATA) != big_endian) + { + if (big_endian) + gold_error(_("%s: little endian elf flag set on BE object"), + name.c_str()); + else + gold_error(_("%s: little endian elf flag clear on LE object"), + name.c_str()); + } + + return Target::do_make_elf_object(name, input_file, offset, ehdr); +} + +// Adjust ELF file header. + +template<int size, bool big_endian> +void +Target_sparc<size, big_endian>::do_adjust_elf_header( + unsigned char* view, + int len) +{ + elfcpp::Ehdr_write<size, big_endian> oehdr(view); + + oehdr.put_e_machine(this->elf_machine_); + oehdr.put_e_flags(this->elf_flags_); + + Sized_target<size, big_endian>::do_adjust_elf_header(view, len); +} + +// The selector for sparc object files. + +template<int size, bool big_endian> +class Target_selector_sparc : public Target_selector +{ +public: + Target_selector_sparc() + : Target_selector(elfcpp::EM_NONE, size, big_endian, + (size == 64 ? "elf64-sparc" : "elf32-sparc"), + (size == 64 ? "elf64_sparc" : "elf32_sparc")) + { } + + virtual Target* + do_recognize(Input_file*, off_t, int machine, int, int) + { + switch (size) + { + case 64: + if (machine != elfcpp::EM_SPARCV9) + return NULL; + break; + + case 32: + if (machine != elfcpp::EM_SPARC + && machine != elfcpp::EM_SPARC32PLUS) + return NULL; + break; + + default: + return NULL; + } + + return this->instantiate_target(); + } + + virtual Target* + do_instantiate_target() + { return new Target_sparc<size, big_endian>(); } +}; + +Target_selector_sparc<32, true> target_selector_sparc32; +Target_selector_sparc<64, true> target_selector_sparc64; + +} // End anonymous namespace. |