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Unified Diff: gold/mips.cc

Issue 10252012: [MIPS] Initial checkin for MIPS changes for GOLD. (Closed)
Patch Set: Updated MIPS code w/ SH_RELA. Created 8 years, 7 months ago
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Index: gold/mips.cc
===================================================================
new file mode 100644
--- /dev/null
+++ b/gold/mips.cc
@@ -0,0 +1,5220 @@
+// mips.cc -- mips target support for gold.
+
+// Copyright 2011 Free Software Foundation, Inc.
+// Written by Aleksandar Simeonov <aleksandar.simeonov@rt-rk.com>
+// based on the i386 code by Ian Lance Taylor <iant@google.com>.
+// This file also contains borrowed and adapted code from
+// bfd/elf32-mips.c.
+
+// 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 <set>
+#include <sstream>
+
+#include "gold.h"
+
+#include "elfcpp.h"
+#include "parameters.h"
+#include "reloc.h"
+#include "mips.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 Mips_output_data_plt;
+
+template<int size, bool big_endian>
+class Mips_output_data_got;
+
+template<int size, bool big_endian>
+class Target_mips;
+
+template<int size>
+class Mips_output_section_reginfo;
+
+template<int size, bool big_endian>
+class Mips_output_data_stub;
+
+template<int size, bool big_endian>
+class Mips_output_data_mips_stubs;
+
+// Mips_output_data_got class. We derive this from Output_data_got to add
+// extra methods to handle TLS relocations.
+
+template<int size, bool big_endian>
+class Mips_output_data_got : public Output_data_got<size, big_endian>
+{
+ public:
+ typedef Output_data_reloc<elfcpp::SHT_REL, true, size, big_endian>
+ Reloc_section;
+
+ Mips_output_data_got(Symbol_table* symtab, Layout* layout)
+ : Output_data_got<size, big_endian>(), symbol_table_(symtab),
+ layout_(layout), tls_entries_(0), tls_entries_set_(false)
+ {
+ // According to MIPS O32 ABI zero entry of GOT is reserved.
+ this->add_constant(0);
+ // Module pointer (GNU extension)
+ this->add_constant(0x80000000);
+ }
+
+ // Add a static entry for the GOT entry at OFFSET. GSYM is a global
+ // symbol and R_TYPE is the code of a dynamic relocation that needs to be
+ // applied in a static link.
+ void
+ add_static_reloc(unsigned int got_offset, unsigned int r_type, Symbol* gsym)
+ { this->static_relocs_.push_back(Static_reloc(got_offset, r_type, gsym)); }
+
+ // Add a static reloc for the GOT entry at OFFSET. RELOBJ is an object
+ // defining a local symbol with INDEX. R_TYPE is the code of a dynamic
+ // relocation that needs to be applied in a static link.
+ void
+ add_static_reloc(unsigned int got_offset, unsigned int r_type,
+ Sized_relobj_file<size, big_endian>* relobj,
+ unsigned int index)
+ {
+ this->static_relocs_.push_back(Static_reloc(got_offset, r_type, relobj,
+ index));
+ }
+
+ void
+ add_tls_gd_with_static_reloc(unsigned int got_type, Symbol* gsym);
+
+ // Same as the above but for a local symbol in OBJECT with INDEX.
+ void
+ add_tls_gd_local_reloc(unsigned int got_type,
+ Sized_relobj_file<size, big_endian>* object,
+ unsigned int index);
+
+ void
+ add_got16_view(std::string key, Mips_output_data_got<size, big_endian>* got)
+
+ {
+ if (got16_views_.count(key) == 0)
+ got16_views_[key] = got->add_constant(0);
+ }
+
+ unsigned int
+ got16_offset(std::string key)
+ {
+ if (got16_views_.count(key) == 0)
+ gold_error("internal error in GOT16 relocation");
+
+ return got16_views_[key];
+ }
+
+ unsigned char*
+ got_view()
+ { return this->got_view_; }
+
+ Symbol_table*
+ symbol_table()
+ { return this->symbol_table_; }
+
+ Layout*
+ layout()
+ { return this->layout_; }
+
+ void
+ add_global_with_reloc_mips(Symbol* gsym)
+ {
+ this->global_relocs_.push(gsym);
+ }
+
+ void
+ add_global_tls_with_reloc_mips(Symbol* gsym, Reloc_section* rel_dyn,
+ unsigned int r_type)
+ {
+ this->tls_relocs_.push(Tls_reloc(gsym, rel_dyn, r_type));
+ }
+
+ void
+ add_global_relocs()
+ {
+ while (!this->global_relocs_.empty())
+ {
+ Symbol *gsym = this->global_relocs_.front();
+
+ this->add_global(gsym, 0);
+ gsym->set_needs_dynsym_entry();
+ this->global_relocs_.pop();
+ }
+ }
+
+ void
+ add_global_tls_relocs()
+ {
+ while (!this->tls_relocs_.empty())
+ {
+ Tls_reloc tls_rel = this->tls_relocs_.front();
+ Symbol *gsym = tls_rel.symbol();
+
+ if (!gsym->has_got_offset(1))
+ {
+ unsigned int r_type = tls_rel.r_type();
+ Reloc_section* rel_dyn = tls_rel.rel_dyn();
+
+ this->tls_entries_++;
+
+ if (parameters->options().output_is_position_independent())
+ {
+ this->add_global(gsym, 1);
+ rel_dyn->add_absolute(r_type, this, gsym->got_offset(1));
+ }
+ else
+ {
+ this->add_global_with_rel(gsym, 1, rel_dyn, r_type);
+ }
+
+ gsym->set_needs_dynsym_entry();
+ }
+
+ this->tls_relocs_.pop();
+ }
+
+ this->tls_entries_set_ = true;
+ }
+
+ unsigned int
+ tls_entries()
+ {
+ if (this->tls_entries_set_)
+ return this->tls_entries_;
+
+ return 0;
+ }
+ protected:
+ // Write out the GOT table.
+ void
+ do_write(Output_file*);
+
+ private:
+ class Tls_reloc
+ {
+ public:
+ Tls_reloc(Symbol* gsym, Reloc_section* rel_dyn, unsigned int r_type)
+ : symbol_(gsym), rel_dyn_(rel_dyn), r_type_(r_type)
+ { }
+
+ Symbol*
+ symbol()
+ { return this->symbol_; }
+
+ Reloc_section*
+ rel_dyn()
+ { return this->rel_dyn_; }
+
+ unsigned int
+ r_type()
+ { return this->r_type_; }
+
+ private:
+ Symbol* symbol_;
+ Reloc_section* rel_dyn_;
+ unsigned int r_type_;
+ };
+
+ // This class represent dynamic relocations that need to be applied by
+ // gold because we are using TLS relocations in a static link.
+ class Static_reloc
+ {
+ public:
+ Static_reloc(unsigned int got_offset, unsigned int r_type, Symbol* gsym)
+ : got_offset_(got_offset), r_type_(r_type), symbol_is_global_(true)
+ { this->u_.global.symbol = gsym; }
+
+ Static_reloc(unsigned int got_offset, unsigned int r_type,
+ Sized_relobj_file<size, big_endian>* relobj, unsigned int index)
+ : got_offset_(got_offset), r_type_(r_type), symbol_is_global_(false)
+ {
+ this->u_.local.relobj = relobj;
+ this->u_.local.index = index;
+ }
+
+ // Return the GOT offset.
+ unsigned int
+ got_offset() const
+ { return this->got_offset_; }
+
+ // Relocation type.
+ unsigned int
+ r_type() const
+ { return this->r_type_; }
+
+ // Whether the symbol is global or not.
+ bool
+ symbol_is_global() const
+ { return this->symbol_is_global_; }
+
+ // For a relocation against a global symbol, the global symbol.
+ Symbol*
+ symbol() const
+ {
+ gold_assert(this->symbol_is_global_);
+ return this->u_.global.symbol;
+ }
+
+ // For a relocation against a local symbol, the defining object.
+ Sized_relobj_file<size, big_endian>*
+ relobj() const
+ {
+ gold_assert(!this->symbol_is_global_);
+ return this->u_.local.relobj;
+ }
+
+ // For a relocation against a local symbol, the local symbol index.
+ unsigned int
+ index() const
+ {
+ gold_assert(!this->symbol_is_global_);
+ return this->u_.local.index;
+ }
+
+ private:
+ // GOT offset of the entry to which this relocation is applied.
+ unsigned int got_offset_;
+ // Type of relocation.
+ unsigned int r_type_;
+ // Whether this relocation is against a global symbol.
+ bool symbol_is_global_;
+ // A global or local symbol.
+ union
+ {
+ struct
+ {
+ // For a global symbol, the symbol itself.
+ Symbol* symbol;
+ } global;
+ struct
+ {
+ // For a local symbol, the object defining object.
+ Sized_relobj_file<size, big_endian>* relobj;
+ // For a local symbol, the symbol index.
+ unsigned int index;
+ } local;
+ } u_;
+ };
+
+ // Symbol table of the output object.
+ Symbol_table* symbol_table_;
+ // Layout of the output object.
+ Layout* layout_;
+ // Static relocs to be applied to the GOT.
+ std::vector<Static_reloc> static_relocs_;
+ // Got16 relocs that are related to the GOT
+ std::map<std::string, unsigned int> got16_views_;
+ // .got section view
+ unsigned char* got_view_;
+ // List of global relocs that should be at the end of .got section
+ std::queue<Symbol *> global_relocs_;
+ // List of global tls relocs that should be at the end of .got section
+ std::queue<Tls_reloc> tls_relocs_;
+ // Number of TLS entries
+ unsigned int tls_entries_;
+ // Is number of TLS entries set
+ bool tls_entries_set_;
+};
+
+// Mips reginfo output section class
+
+template<int size>
+class Mips_output_section_reginfo : public Output_section
+{
+ public:
+ Mips_output_section_reginfo (const char *name, elfcpp::Elf_Word type,
+ elfcpp::Elf_Xword flags):Output_section (name, type, flags)
+ {
+ this->set_always_keeps_input_sections();
+
+ gp_ = NULL;
+
+ for (size_t i = 0; i < 24; i++)
+ data_[i] = 0;
+ }
+
+ ~Mips_output_section_reginfo()
+ { };
+
+ void
+ set_gp(Sized_symbol<size> *gp)
+ { this->gp_ = gp; }
+
+ // Downcast a base pointer to an Mips_output_section_reginfo pointer.
+ static Mips_output_section_reginfo<size>*
+ as_mips_output_section_reginfo(Output_section* os)
+ { return static_cast<Mips_output_section_reginfo<size>*>(os); }
+
+ protected:
+ // Set the final data size.
+ void set_final_data_size();
+
+ // Write reginfo section into file OF.
+ void do_write (Output_file * of);
+
+ private:
+ // Data.
+ unsigned char data_[24];
+
+ // _gp symbol
+ Sized_symbol<size>* gp_;
+};
+
+// The MIPS target has many relocation types with odd-sizes or noncontiguous
+// bits. The default handling of relocatable relocation cannot process these
+// relocations. So we have to extend the default code.
+
+template<bool big_endian, int sh_type, typename Classify_reloc>
+class Mips_scan_relocatable_relocs :
+ public Default_scan_relocatable_relocs<sh_type, Classify_reloc>
+{
+ public:
+ // Return the strategy to use for a local symbol which is a section
+ // symbol, given the relocation type.
+ inline Relocatable_relocs::Reloc_strategy
+ local_section_strategy(unsigned int r_type, Relobj *object)
+ {
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_26:
+ return Relocatable_relocs::RELOC_SPECIAL;
+
+ default:
+ return Default_scan_relocatable_relocs<sh_type, Classify_reloc>::local_section_strategy(r_type, object);
+ }
+ }
+};
+
+template<int size, bool big_endian>
+class Target_mips : public Sized_target<size, big_endian>
+{
+ public:
+ typedef Output_data_reloc<elfcpp::SHT_REL, true, size, big_endian>
+ Reloc_section;
+ typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian>
+ Reloca_section;
+ typedef Unordered_map<const char*, Symbol*> Stub_symbol_info;
+
+ Target_mips()
+ : Sized_target<size, big_endian>(&mips_info),
+ got_(NULL), plt_(NULL), got_plt_(NULL),
+ rel_dyn_(NULL), rela_dyn_(NULL), copy_relocs_(elfcpp::R_MIPS_COPY),
+ copy_relocsa_(elfcpp::R_MIPS_COPY), got_mod_index_offset_(-1U),
+ gp_(NULL), stub_(NULL), stub_flag_(false),
+ processor_specific_flags_(0), mips_stubs_(NULL), text_section_(NULL),
+ layout_(NULL), symtab_(NULL)
+ {
+ add_extension(elfcpp::E_MIPS_ARCH_64R2, elfcpp::E_MIPS_MACH_OCTEON);
+ add_extension(elfcpp::E_MIPS_ARCH_64, elfcpp::E_MIPS_ARCH_64R2);
+ add_extension(elfcpp::E_MIPS_ARCH_64, elfcpp::E_MIPS_ARCH_64
+ | elfcpp::E_MIPS_MACH_SB1);
+ add_extension(elfcpp::E_MIPS_ARCH_64, elfcpp::E_MIPS_ARCH_64
+ | elfcpp::E_MIPS_MACH_XLR);
+ add_extension(elfcpp::E_MIPS_ARCH_64, elfcpp::E_MIPS_ARCH_64
+ | elfcpp::E_MIPS_MACH_LS3A);
+ add_extension(elfcpp::E_MIPS_ARCH_5, elfcpp::E_MIPS_ARCH_64);
+ add_extension(elfcpp::E_MIPS_ARCH_4 | elfcpp::E_MIPS_MACH_5400,
+ elfcpp::E_MIPS_ARCH_4 | elfcpp::E_MIPS_MACH_5500);
+ add_extension(elfcpp::E_MIPS_ARCH_4, elfcpp::E_MIPS_ARCH_4
+ | elfcpp::E_MIPS_MACH_5400);
+ add_extension(elfcpp::E_MIPS_ARCH_4, elfcpp::E_MIPS_ARCH_5);
+ add_extension(elfcpp::E_MIPS_ARCH_4, elfcpp::E_MIPS_ARCH_4
+ | elfcpp::E_MIPS_MACH_9000);
+ add_extension(elfcpp::E_MIPS_ARCH_3 | elfcpp::E_MIPS_MACH_4100,
+ elfcpp::E_MIPS_ARCH_3 | elfcpp::E_MIPS_MACH_4120);
+ add_extension(elfcpp::E_MIPS_ARCH_3 | elfcpp::E_MIPS_MACH_4100,
+ elfcpp::E_MIPS_ARCH_3 | elfcpp::E_MIPS_MACH_4111);
+ add_extension(elfcpp::E_MIPS_ARCH_3, elfcpp::E_MIPS_ARCH_3
+ | elfcpp::E_MIPS_MACH_LS2F);
+ add_extension(elfcpp::E_MIPS_ARCH_3, elfcpp::E_MIPS_ARCH_3
+ | elfcpp::E_MIPS_MACH_LS2F);
+ add_extension(elfcpp::E_MIPS_ARCH_3, elfcpp::E_MIPS_ARCH_4);
+ add_extension(elfcpp::E_MIPS_ARCH_3, elfcpp::E_MIPS_ARCH_3
+ | elfcpp::E_MIPS_MACH_4650);
+ add_extension(elfcpp::E_MIPS_ARCH_3, elfcpp::E_MIPS_ARCH_3
+ | elfcpp::E_MIPS_MACH_4100);
+ add_extension(elfcpp::E_MIPS_ARCH_3, elfcpp::E_MIPS_ARCH_3
+ | elfcpp::E_MIPS_MACH_4111);
+ add_extension(elfcpp::E_MIPS_ARCH_32, elfcpp::E_MIPS_ARCH_32R2);
+ add_extension(elfcpp::E_MIPS_ARCH_2, elfcpp::E_MIPS_ARCH_3);
+ add_extension(elfcpp::E_MIPS_ARCH_2, elfcpp::E_MIPS_ARCH_32);
+ add_extension(elfcpp::E_MIPS_ARCH_1, elfcpp::E_MIPS_ARCH_2);
+ add_extension(elfcpp::E_MIPS_ARCH_1, elfcpp::E_MIPS_ARCH_1
+ | elfcpp::E_MIPS_MACH_3900);
+ }
+
+ // 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 *);
+
+ // Fix values that are known only after sections are finalized.
+ void
+ do_fix_sections(Layout*, Symbol_table*);
+
+ // 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*);
+
+ // Relocate a section during a relocatable link.
+ void
+ relocate_for_relocatable(const Relocate_info<size, big_endian>*,
+ unsigned int sh_type,
+ const unsigned char* prelocs,
+ size_t reloc_count,
+ Output_section* output_section,
+ off_t offset_in_output_section,
+ const Relocatable_relocs*,
+ unsigned char* view,
+ typename elfcpp::Elf_types<size>::Elf_Addr view_address,
+ section_size_type view_size,
+ unsigned char* reloc_view,
+ section_size_type reloc_view_size);
+
+ // Perform target-specific processing in a relocatable link. This is
+ // only used if we use the relocation strategy RELOC_SPECIAL.
+ void
+ relocate_special_relocatable(const Relocate_info<size, big_endian>* relinfo,
+ unsigned int sh_type,
+ const unsigned char* preloc_in,
+ size_t relnum,
+ Output_section* output_section,
+ off_t offset_in_output_section,
+ unsigned char* view,
+ typename elfcpp::Elf_types<32>::Elf_Addr
+ view_address,
+ section_size_type view_size,
+ unsigned char* preloc_out);
+
+ // Return whether SYM is defined by the ABI.
+ bool
+ do_is_defined_by_abi(const Symbol* sym) const
+ {
+ return ((strcmp(sym->name(), "__gnu_local_gp") == 0)
+ || (strcmp(sym->name(), "_gp_disp") == 0)
+ || (strcmp(sym->name(), "___tls_get_addr") == 0));
+ }
+
+ // Return the number of entries in the GOT.
+ unsigned int
+ got_entry_count() const
+ {
+ if (!this->has_got_section())
+ return 0;
+ return this->got_size() / 4;
+ }
+
+ // Return the number of entries in the PLT.
+ unsigned int
+ 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.
+ unsigned int
+ first_plt_entry_offset() const
+ { return Mips_output_data_plt<size, big_endian>::first_plt_entry_offset(); }
+
+ // Return the size of each PLT entry.
+ unsigned int
+ plt_entry_size() const
+ { return Mips_output_data_plt<size, big_endian>::plt_entry_size(); }
+
+ // Get stub section
+ Mips_output_data_stub<size, big_endian>*
+ stub()
+ { return this->stub_; }
+
+ // Add stub symbol to map
+ void
+ add_stub_symbol(const char* name, Symbol *gsym)
+ { this->stub_symbol_[name] = gsym; }
+
+ // Get stub symbol from map
+ Symbol*
+ stub_symbol(const char* name)
+ { return this->stub_symbol_[name]; }
+
+ // Check if symbol is in .plt section
+ bool
+ is_plt_symbol(Sized_symbol<size> *sym)
+ {
+ if (this->mips_stubs_ == NULL)
+ return true;
+
+ return this->mips_stubs_->is_plt_symbol(sym);
+ }
+
+ // Return .MIPS.stubs output section.
+ Mips_output_data_mips_stubs<size, big_endian> *
+ mips_stubs() const
+ { return this->mips_stubs_; }
+
+ // Retrun address of .text section
+ uint64_t
+ text_section_address() const
+ {
+ if (this->text_section_ == 0)
+ return 0;
+
+ return this->text_section_->address();
+ }
+
+protected:
+ // Return the value to use for a dynamic symbol 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.
+ uint64_t
+ do_dynsym_value(const Symbol* gsym) const;
+
+ // Make an output section.
+ Output_section*
+ do_make_output_section (const char *name, elfcpp::Elf_Word type,
+ elfcpp::Elf_Xword flags)
+ {
+ if (type == elfcpp::SHT_MIPS_REGINFO)
+ return new Mips_output_section_reginfo<size>(name, type, flags);
+ else
+ return new Output_section(name, type, flags);
+ }
+
+ void
+ do_adjust_elf_header(unsigned char* view, int len) const;
+
+ // MIPS specific dynamic tags.
+ unsigned int
+ do_dynamic_tag_value(elfcpp::DT) const;
+
+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_mips* target,
+ Sized_relobj_file<size, big_endian>* object,
+ unsigned int data_shndx,
+ Output_section* output_section,
+ const elfcpp::Rel<size, big_endian>& reloc, unsigned int r_type,
+ const elfcpp::Sym<size, big_endian>& lsym);
+
+ inline void
+ local(Symbol_table* symtab, Layout* layout, Target_mips* 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);
+
+ inline void
+ local(Symbol_table* symtab, Layout* layout, Target_mips* target,
+ Sized_relobj_file<size, big_endian>* object,
+ unsigned int data_shndx,
+ Output_section* output_section,
+ const elfcpp::Rela<size, big_endian>* rela,
+ const elfcpp::Rel<size, big_endian>* rel,
+ unsigned int rel_type,
+ unsigned int r_type,
+ const elfcpp::Sym<size, big_endian>& lsym);
+
+ inline void
+ global(Symbol_table* symtab, Layout* layout, Target_mips* target,
+ Sized_relobj_file<size, big_endian>* object,
+ unsigned int data_shndx,
+ Output_section* output_section,
+ const elfcpp::Rel<size, big_endian>& reloc, unsigned int r_type,
+ Symbol* gsym);
+
+ inline void
+ global(Symbol_table* symtab, Layout* layout, Target_mips* 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 void
+ global(Symbol_table* symtab, Layout* layout, Target_mips* target,
+ Sized_relobj_file<size, big_endian>* object,
+ unsigned int data_shndx,
+ Output_section* output_section,
+ const elfcpp::Rela<size, big_endian>* rela,
+ const elfcpp::Rel<size, big_endian>* rel,
+ unsigned int rel_type,
+ unsigned int r_type,
+ Symbol* gsym);
+
+ inline bool
+ local_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
+ Target_mips* ,
+ Sized_relobj_file<size, big_endian>* ,
+ unsigned int ,
+ Output_section* ,
+ const elfcpp::Rel<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_mips* ,
+ Sized_relobj_file<size, big_endian>* ,
+ unsigned int ,
+ Output_section* ,
+ const elfcpp::Rel<size, big_endian>& ,
+ unsigned int , Symbol*)
+ { return false; }
+
+ inline bool
+ local_reloc_may_be_function_pointer(Symbol_table* , Layout* ,
+ Target_mips* ,
+ 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_mips* ,
+ 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_mips* target);
+
+ void
+ check_non_pic(Relobj*, unsigned int r_type);
+
+ static bool
+ symbol_needs_plt_entry(const Symbol* sym)
+ {
+ // An undefined symbol from an executable does not need a PLT entry.
+ if (sym->is_undefined() && !parameters->options().shared())
+ return false;
+
+ return (!parameters->doing_static_link()
+ && sym->is_func()
+ && (!sym->is_undef_binding_weak())
+ && (sym->is_from_dynobj()
+ || sym->is_undefined()
+ || sym->is_preemptible()));
+ }
+
+ // Whether we have issued an error about a non-PIC compilation.
+ bool issued_non_pic_error_;
+ };
+
+ // The class which implements relocation.
+ class Relocate
+ {
+ public:
+ // Do a relocation. Return false if the caller should not issue
+ // any warnings about this relocation.
+ inline bool
+ relocate(const Relocate_info<size, big_endian>*, Target_mips*,
+ Output_section*, size_t relnum,
+ const elfcpp::Rela<size, big_endian>*,
+ const elfcpp::Rel<size, big_endian>*,
+ unsigned int,
+ unsigned int, const Sized_symbol<size>*,
+ const Symbol_value<size>*,
+ unsigned char*,
+ typename elfcpp::Elf_types<size>::Elf_Addr,
+ section_size_type);
+
+ inline bool
+ relocate(const Relocate_info<size, big_endian>*, Target_mips*,
+ Output_section*, size_t relnum,
+ const elfcpp::Rel<size, big_endian>&,
+ unsigned int, const Sized_symbol<size>*,
+ const Symbol_value<size>*,
+ unsigned char*,
+ typename elfcpp::Elf_types<size>::Elf_Addr,
+ section_size_type);
+
+ inline bool
+ relocate(const Relocate_info<size, big_endian>*, Target_mips*,
+ Output_section*, size_t relnum,
+ const elfcpp::Rela<size, big_endian>&,
+ unsigned int, const Sized_symbol<size>*,
+ const Symbol_value<size>*,
+ unsigned char*,
+ typename elfcpp::Elf_types<size>::Elf_Addr,
+ section_size_type);
+ };
+
+ // A class which returns the size required for a relocation type,
+ // used while scanning relocs during a relocatable link.
+ class Relocatable_size_for_reloc
+ {
+ public:
+ unsigned int
+ get_size_for_reloc(unsigned int, Relobj*);
+ };
+
+ // Adjust TLS relocation type based on the options and whether this
+ // is a local symbol.
+ static tls::Tls_optimization
+ optimize_tls_reloc(bool is_final, int r_type);
+
+ // Return whether there is a GOT section.
+ bool
+ has_got_section() const
+ { return this->got_ != NULL; }
+
+ // Get the GOT section, creating it if necessary.
+ Mips_output_data_got<size, big_endian>*
+ got_section(Symbol_table*, Layout*);
+
+ Mips_output_data_got<size, big_endian>*
+ got_section()
+ { return this->got_; }
+
+ // Return processor specific flags
+ elfcpp::Elf_Word
+ processor_specific_flags() const
+ { return this->processor_specific_flags_; }
+
+ // Set processor specific flags
+ void
+ set_processor_specific_flags(elfcpp::Elf_Word psf)
+ { this->processor_specific_flags_ = psf; }
+
+ // Check if the given ELF header glags describe a 32-bit binary.
+ bool
+ mips_32bit_flags(elfcpp::Elf_Word);
+
+ // Check if new architecture extends previous one.
+ bool
+ mips_mach_extends(elfcpp::Elf_Word, elfcpp::Elf_Word);
+
+ // Merge processor specific flags.
+ void
+ merge_processor_specific_flags(const char*, elfcpp::Elf_Word);
+
+ // Return the size of the GOT section.
+ section_size_type
+ got_size() const
+ {
+ gold_assert(this->got_ != NULL);
+ return this->got_->data_size();
+ }
+
+ // 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);
+
+ // Create a PLT entry for a global symbol.
+ void
+ make_plt_entry(Symbol_table*, Layout*, Symbol*);
+
+ // Create a .MIPS.stubs entry for a global symbol.
+ void
+ make_mips_stubs_entry(Symbol_table*, Layout*, Symbol*);
+
+ // Remove symbol that should not have entry.
+ void
+ remove_stub_entry(Symbol *sym)
+ {
+ if (this->mips_stubs_ != NULL)
+ this->mips_stubs_->remove(sym);
+ }
+
+ // Create a STUB entry for a global symbol.
+ void
+ make_stub_entry(Layout*);
+
+ void
+ set_stub_flag()
+ { this->stub_flag_ = true; }
+
+ bool
+ stub_flag() const
+ { return this->stub_flag_; }
+
+ // Get the PLT section.
+ const Mips_output_data_plt<size, big_endian>*
+ plt_section() const
+ {
+ gold_assert(this->plt_ != NULL);
+ return this->plt_;
+ }
+
+ // Get the GOT PLT section.
+ const Mips_output_data_plt<size, big_endian>*
+ got_plt_section() const
+ {
+ gold_assert(this->got_plt_ != NULL);
+ return this->got_plt_;
+ }
+
+ // Get _gp.
+ Sized_symbol<size>*
+ gp()
+ { return this->gp_; }
+
+ // Get value of _gp.
+ const typename elfcpp::Elf_types<size>::Elf_Addr
+ gp_address() const
+ { return this->gp_->value(); }
+
+ // 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::Rel<size, big_endian>& reloc)
+ {
+ this->copy_relocs_.copy_reloc(symtab, layout,
+ symtab->get_sized_symbol<size>(sym),
+ object, shndx, output_section,
+ reloc, this->rel_dyn_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_relocsa_.copy_reloc(symtab, layout,
+ symtab->get_sized_symbol<size>(sym),
+ object, shndx, output_section,
+ reloc, this->rela_dyn_section(layout));
+ }
+
+ // Calculate value of _gp.
+ void
+ set_gp(Layout*, Symbol_table*);
+
+ // Get the dynamic reloc section, creating it if necessary.
+ Reloc_section*
+ rel_dyn_section(Layout*);
+
+ Reloca_section*
+ rela_dyn_section(Layout*);
+
+ // Add value to MIPS extenstions.
+ void
+ add_extension(unsigned long base, unsigned long extension)
+ {
+ std::pair<unsigned long, unsigned long> ext(base, extension);
+ this->extensions_.push_back(ext);
+ }
+
+ // 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
+ };
+
+ // Information about this specific target which we pass to the
+ // general Target structure.
+ static Target::Target_info mips_info;
+ // The GOT section.
+ Mips_output_data_got<size, big_endian>* got_;
+ // The PLT section.
+ Mips_output_data_plt<size, big_endian>* plt_;
+ // The GOT PLT section.
+ Output_data_space* got_plt_;
+ // The dynamic reloc section.
+ Reloc_section* rel_dyn_;
+ Reloca_section* rela_dyn_;
+ // Relocs saved to avoid a COPY reloc.
+ Copy_relocs<elfcpp::SHT_REL, size, big_endian> copy_relocs_;
+ Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocsa_;
+ // Offset of the GOT entry for the TLS module index.
+ unsigned int got_mod_index_offset_;
+ // Value of the _gp
+ Sized_symbol<size>* gp_;
+ // The stub section.
+ Mips_output_data_stub<size, big_endian>* stub_;
+ // Stub flag
+ bool stub_flag_;
+ // Map of stub symbols
+ Stub_symbol_info stub_symbol_;
+ // processor-specific flags in ELF file header.
+ elfcpp::Elf_Word processor_specific_flags_;
+ // Architecture extensions.
+ std::vector<std::pair<unsigned long, unsigned long> > extensions_;
+ // .MIPS.stubs
+ Mips_output_data_mips_stubs<size, big_endian>* mips_stubs_;
+ // .text section
+ Output_section *text_section_;
+ // Layout
+ Layout* layout_;
+ // Symbol table
+ Symbol_table* symtab_;
+};
+
+// Helper structure for R_MIPS_HI/LO16 and R_MIPS16_HI/LO16 relocations
+
+template<int size, bool big_endian>
+struct hi16
+{
+ unsigned char* view;
+ typename elfcpp::Swap<32, big_endian>::Valtype symval;
+ typename elfcpp::Elf_types<size>::Elf_Addr addend;
+};
+
+template<int size, bool big_endian>
+class Mips_relocate_functions : public Relocate_functions<size, big_endian>
+{
+public:
+ typedef enum
+ {
+ STATUS_OKAY, // No error during relocation.
+ STATUS_OVERFLOW, // Relocation overflow.
+ STATUS_BAD_RELOC // Relocation cannot be applied.
+ } Status;
+
+private:
+ typedef Relocate_functions<size, big_endian> Base;
+ typedef Mips_relocate_functions<size, big_endian> This;
+
+public:
+ // R_MIPS_16
+ static inline typename This::Status
+ rel16(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<16, big_endian>::readval(wv);
+ Reltype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<16>::sign_extend32(addend_o);
+ else
+ addend = Bits<16>::sign_extend32(val);
+
+ Reltype x = psymval->value(object, addend);
+ val = Bits<16>::bit_select32(val, x, 0x0000ffffU);
+ elfcpp::Swap<16, big_endian>::writeval(wv, val);
+ return (Bits<16>::has_signed_unsigned_overflow32(x)
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+
+ // R_MIPS_32
+ static inline typename This::Status
+ rel32(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<32>::sign_extend32(addend_o);
+ else
+ addend = elfcpp::Swap<32, big_endian>::readval(wv);
+
+ Valtype x = psymval->value(object, addend);
+ elfcpp::Swap<32, big_endian>::writeval(wv, x);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_JALR
+ static inline typename This::Status
+ reljalr(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr address)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype instr = elfcpp::Swap<32, big_endian>::readval(wv);
+ Valtype x = psymval->value(object, 0);
+ Valtype offset = x - address - 4;
+
+ if (!Bits<17>::has_signed_unsigned_overflow32(offset))
+ {
+ if (instr == 0x0320f809) // jalr t9
+ {
+ // bal addr
+ Valtype jalr = 0x04110000 | ((offset >> 2) & 0x0000ffffU);
+ elfcpp::Swap<32, big_endian>::writeval(wv, jalr);
+ }
+ else if (instr == 0x03200008) //jr t9
+ {
+ // b addr
+ Valtype jalr = 0x10000000 | ((offset >> 2) & 0x0000ffffU);
+ elfcpp::Swap<32, big_endian>::writeval(wv, jalr);
+ }
+ }
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_REL32, R_MIPS_PC32
+ static inline typename This::Status
+ relrel32(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr address,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<32>::sign_extend32(addend_o);
+ else
+ addend = elfcpp::Swap<32, big_endian>::readval(wv);
+
+ Valtype x = (psymval->value(object, addend)) - address;
+ elfcpp::Swap<32, big_endian>::writeval(wv, x);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_26
+ static inline typename This::Status
+ rel26(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr address,
+ bool local,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<32, big_endian>::readval(wv);
+ Valtype addend;
+
+ if (local)
+ {
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = ((addend_o & 0x03ffffffU) | ((address + 4) & 0xf0000000U));
+ else
+ addend = ((val & 0x03ffffffU) | ((address + 4) & 0xf0000000U));
+ }
+ else
+ {
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<26>::sign_extend32(addend_o);
+ else
+ addend = Bits<26>::sign_extend32(val & 0x03ffffffU);
+ }
+
+ Valtype x = psymval->value(object, addend << 2);
+ val = Bits<32>::bit_select32(val, x >> 2, 0x03ffffffU);
+ elfcpp::Swap<32, big_endian>::writeval(wv, val);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_SHIFT5
+ static inline typename This::Status
+ relsh5(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<16, big_endian>::readval(wv);
+ Reltype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<11>::sign_extend32(addend_o);
+ else
+ addend = Bits<11>::sign_extend32(val & 0x000007c0U);
+
+ Reltype x = psymval->value(object, addend);
+ val = Bits<11>::bit_select32(val, x, 0x000007c0U);
+ elfcpp::Swap<16, big_endian>::writeval(wv, val);
+ return ((Bits<11>::has_signed_unsigned_overflow32(x) || ((x & 0x3fU) != 0))
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+
+ // R_MIPS_SHIFT6
+ static inline typename This::Status
+ relsh6(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<16, big_endian>::readval(wv);
+ Reltype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<11>::sign_extend32(addend_o);
+ else
+ addend = Bits<11>::sign_extend32(val & 0x000007c0U)
+ || ((val & 0x00004U) << 2);
+ Reltype x = psymval->value(object, addend);
+ x = (x & ~0x00000020U) | ((x & 0x00000020U) >> 2);
+ val = Bits<16>::bit_select32(val, x, 0x000007c4U);
+ elfcpp::Swap<16, big_endian>::writeval(wv, val);
+ return ((Bits<11>::has_signed_unsigned_overflow32(x) || ((x & 0x37U) != 0))
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+
+ // R_MIPS_SUB
+ static inline typename This::Status
+ relsub(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = addend_o;
+ else
+ addend = elfcpp::Swap<64, big_endian>::readval(wv);
+
+ Valtype x = (psymval->value(object, -addend));
+ elfcpp::Swap<64, big_endian>::writeval(wv, x);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_HIGHER
+ static inline typename This::Status
+ relhigher(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = addend_o;
+ else
+ addend = elfcpp::Swap<64, big_endian>::readval(wv);
+
+ Valtype x = (((Valtype)(psymval->value(object, addend) + 0x80008000) >> 32)
+ & 0xffffU);
+ elfcpp::Swap<64, big_endian>::writeval(wv, x);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_HIGHEST
+ static inline typename This::Status
+ relhighest(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend = elfcpp::Swap<64, big_endian>::readval(wv);
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = addend_o;
+ else
+ addend = elfcpp::Swap<64, big_endian>::readval(wv);
+
+ Valtype x = (((Valtype)(psymval->value(object, addend) + 0x800080008000)
+ >> 48) & 0xffffU);
+ elfcpp::Swap<64, big_endian>::writeval(wv, x);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_SCN_DISP
+ static inline typename This::Status
+ relscndisp(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Off offset,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = addend_o;
+ else
+ addend = elfcpp::Swap<32, big_endian>::readval(wv);
+
+ Valtype x = (psymval->value(object, addend)) - offset;
+ elfcpp::Swap<32, big_endian>::writeval(wv, x);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_PC16, R_MIPS_GNU_REL16_S2
+ static inline typename This::Status
+ relpc16(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr address,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<32, big_endian>::readval(wv);
+ Reltype addend;
+
+ if (rel_type == elfcpp::SHT_REL)
+ addend = Bits<16>::sign_extend32(val);
+ else
+ addend = Bits<18>::sign_extend32(addend_o);
+
+ Reltype x = psymval->value(object, addend) - address;
+ val = Bits<16>::bit_select32(val, x >> 2, 0x0000ffffU);
+ elfcpp::Swap<32, big_endian>::writeval(wv, val);
+ return (Bits<18>::has_signed_unsigned_overflow32(x)
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+
+ // R_MIPS_HI16, R_MIPS16_HI16, R_MIPS_GOT16, R_MIPS16_GOT16
+ static inline typename This::Status
+ relhi16(unsigned char* view,
+ typename elfcpp::Swap<32, big_endian>::Valtype symval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend)
+ {
+ struct hi16<size, big_endian>* _hi16 = new hi16<size, big_endian>;
+
+ if (!_hi16)
+ return This::STATUS_OVERFLOW;
+
+ _hi16->view = view;
+ _hi16->symval = symval;
+ _hi16->addend = addend;
+
+ This::hi16_list.push_back(_hi16);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_LO16, R_MIPS16_LO16
+ static inline typename This::Status
+ rello16(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wvlo = reinterpret_cast<Valtype*>(view), *wv;
+ Valtype vallo = elfcpp::Swap<16, big_endian>::readval(wvlo), val;
+ Reltype addendlo, addend;
+ Reltype x, xlo;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addendlo = addend_o;
+ else
+ addendlo = Bits<16>::sign_extend32(vallo);
+
+ xlo = psymval->value(object, addendlo);
+ vallo = Bits<16>::bit_select32(vallo, xlo, 0x0000ffffU);
+
+ while (hi16_list.size())
+ {
+ struct hi16<size, big_endian>* _hi16 = hi16_list.back();
+ wv = reinterpret_cast<Valtype*>(_hi16->view);
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = _hi16->addend;
+ else
+ addend = elfcpp::Swap<16, big_endian>::readval(wv);
+
+ x = _hi16->symval + addendlo + (addend << 16);
+ x += 0x00008000U;
+ x >>= 16;
+
+ val = Bits<16>::bit_select32(val, x, 0x0000ffffU);
+ elfcpp::Swap<16, big_endian>::writeval(wv, val);
+
+ free(_hi16);
+ This::hi16_list.pop_back();
+ };
+
+ elfcpp::Swap<16, big_endian>::writeval(wvlo, vallo);
+ return This::STATUS_OKAY;
+ }
+
+ //R_MIPS_64
+ static inline typename This::Status
+ rel64(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = addend_o;
+ else
+ addend = elfcpp::Swap<64, big_endian>::readval(wv);
+
+ Valtype x = psymval->value(object, addend);
+ elfcpp::Swap<64, big_endian>::writeval(wv, x);
+ return This::STATUS_OKAY;
+ }
+ static typename std::vector<struct hi16<size, big_endian> *> hi16_list;
+
+ // R_MIPS_GOT_DISP, R_MIPS_GOT_PAGE,
+ // R_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GD, R_MIPS_TLS_LDM
+ static inline typename This::Status
+ relgotofst(unsigned char* view,
+ typename elfcpp::Swap<32, big_endian>::Valtype got_offset)
+ {
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Reltype x = got_offset;
+ elfcpp::Swap<16, big_endian>::writeval(wv, x);
+ return (Bits<16>::has_signed_unsigned_overflow32(x)
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+
+ // R_MIPS_GOT16, R_MIPS16_GOT16
+ static inline typename This::Status
+ relgot16(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ const typename elfcpp::Swap<size, big_endian>::Valtype _gp,
+ unsigned char* got_view,
+ const typename elfcpp::Swap<size, big_endian>::Valtype got_address,
+ const typename elfcpp::Swap<size, big_endian>::Valtype got_offset,
+ const Sized_symbol<size>* gsym,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<16, big_endian>::readval(wv);
+ Reltype x = got_address - _gp;
+
+ if (gsym != NULL)
+ // TODO AS: Constant GOT_TYPE_STANDARD should be used.
+ x += gsym->got_offset(0);
+ else
+ {
+ Valtype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<16>::sign_extend32(addend_o);
+ else
+ addend = elfcpp::Swap<16, big_endian>::readval(wv);
+
+ // got_view points to beggining of location, data is written
+ // in the second half
+ relhi16(got_view + 2, psymval->value(object, addend << 16), 0);
+ x = got_address + got_offset - _gp;
+ }
+
+ val = Bits<16>::bit_select32(val, x, 0x0000ffffU);
+
+ elfcpp::Swap<16, big_endian>::writeval(wv, val);
+
+ return (Bits<16>::has_signed_unsigned_overflow32(x)
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+
+ // R_MIPS_GPREL16, R_MIPS16_GPREL and R_MIPS_LITERAL
+ static inline typename This::Status
+ relgprel(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ const typename elfcpp::Swap<size, big_endian>::Valtype _gp,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<16, big_endian>::readval(wv);
+ Reltype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<16>::sign_extend32(addend_o);
+ else
+ addend = Bits<16>::sign_extend32(val);
+
+ Reltype x = psymval->value(object, addend) - _gp;
+ val = Bits<16>::bit_select32(val, x, 0x0000ffffU);
+ elfcpp::Swap<16, big_endian>::writeval(wv, val);
+ return (Bits<16>::has_signed_unsigned_overflow32(x)
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+
+ // R_MIPS_GPREL32
+ static inline typename This::Status
+ relgprel32(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ const typename elfcpp::Swap<size, big_endian>::Valtype gp,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ size_t sec_num;
+ for (sec_num = 0; sec_num < object->shnum(); sec_num++)
+ if (((Object*)object)->section_type(sec_num) == elfcpp::SHT_MIPS_REGINFO)
+ break;
+
+ gold::section_size_type section_size = 24;
+ const unsigned char* reginfo = ((Object*)object)->section_contents(sec_num,
+ &section_size, false) + 20;
+ const Valtype* ri = reinterpret_cast<const Valtype*>(reginfo);
+ Valtype gp0 = elfcpp::Swap<32, big_endian>::readval(ri);
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<32>::sign_extend32(addend_o);
+ else
+ addend = elfcpp::Swap<32, big_endian>::readval(wv);
+
+ Valtype x = (psymval->value(object, addend)) + gp0 - gp;
+ elfcpp::Swap<32, big_endian>::writeval(wv, x);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_GLOB_DAT
+ static inline typename This::Status
+ relglob(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ elfcpp::Swap<32, big_endian>::writeval(wv, psymval->value(object, 0));
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_TLS_TPREL32, R_MIPS_TLS_DTPREL32
+ static inline typename This::Status
+ tlsrel32(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ const typename elfcpp::Swap<32, big_endian>::Valtype offset,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<32>::sign_extend32(addend_o);
+ else
+ addend = elfcpp::Swap<32, big_endian>::readval(wv);
+
+ Valtype x = psymval->value(object, addend) - offset;
+ elfcpp::Swap<32, big_endian>::writeval(wv, x);
+ return This::STATUS_OKAY;
+ }
+
+ // R_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_DTPREL_LO16
+ static inline typename This::Status
+ tlsrello16(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ const typename elfcpp::Swap<32, big_endian>::Valtype offset,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<16, big_endian>::readval(wv);
+ Reltype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<16>::sign_extend32(addend_o);
+ else
+ addend = Bits<16>::sign_extend32(val);
+
+ Reltype x = psymval->value(object, addend) - offset;
+ val = Bits<16>::bit_select32(val, x, 0x0000ffffU);
+ elfcpp::Swap<16, big_endian>::writeval(wv, val);
+ return (Bits<16>::has_signed_unsigned_overflow32(x)
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+
+ // R_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_DTPREL_HI16
+ static inline typename This::Status
+ tlsrelhi16(unsigned char* view,
+ const Sized_relobj_file<size, big_endian>* object,
+ const Symbol_value<size>* psymval,
+ const typename elfcpp::Swap<32, big_endian>::Valtype offset,
+ typename elfcpp::Elf_types<size>::Elf_Addr addend_o,
+ unsigned int rel_type)
+ {
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype val = elfcpp::Swap<16, big_endian>::readval(wv);
+ Reltype addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ addend = Bits<16>::sign_extend32(addend_o);
+ else
+ addend = Bits<16>::sign_extend32(val);
+
+ Reltype x = ((psymval->value(object, addend) - offset) + 0x8000U) >> 16;
+ val = Bits<16>::bit_select32(val, x, 0x0000ffffU);
+ elfcpp::Swap<16, big_endian>::writeval(wv, val);
+ return (Bits<16>::has_signed_unsigned_overflow32(x)
+ ? This::STATUS_OVERFLOW
+ : This::STATUS_OKAY);
+ }
+};
+
+template<int size>
+void
+Mips_output_section_reginfo<size>::set_final_data_size()
+{
+ // Set data size.
+ this->set_data_size(24);
+}
+
+template<int size>
+void
+Mips_output_section_reginfo<size>::do_write(Output_file* of)
+{
+ // Set output data
+ for (Input_section_list::const_iterator p = this->input_sections().begin();
+ p != this->input_sections().end();
+ ++p)
+ {
+ unsigned int shndx = p->shndx();
+ Relobj* relobj = p->relobj();
+
+ section_size_type section_size;
+ const unsigned char* section_contents =
+ relobj->section_contents(shndx, &section_size, false);
+
+ for (size_t i = 0; i < 20; i++)
+ this->data_[i] |= section_contents[i];
+ }
+
+ unsigned long gp_val = 0;
+ if (this->gp_ != NULL)
+ gp_val = this->gp_->value();
+
+ this->data_[20]=gp_val & 0xff;
+ this->data_[21]=(gp_val >> 8) & 0xff;
+ this->data_[22]=(gp_val >> 16) & 0xff;
+ this->data_[23]=(gp_val >> 24) & 0xff;
+
+ off_t offset = this->offset();
+ off_t data_size = this->data_size();
+
+ unsigned char* view = of->get_output_view(offset, data_size);
+ memcpy(view, this->data_, data_size);
+ of->write_output_view(offset, data_size, view);
+}
+
+// Return the value to use for a dynamic symbol 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_mips<size, big_endian>::do_dynsym_value(const Symbol* gsym) const
+{
+ gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset());
+
+ if (gsym->plt_offset() == 0)
+ return 0;
+
+ if ((this->mips_stubs() == NULL) ||
+ (this->mips_stubs()->is_plt_symbol((Sized_symbol<size> *)gsym)))
+ return this->plt_section()->address() + gsym->plt_offset();
+ else
+ return this->mips_stubs()->address() +
+ gsym->plt_offset() * (this->mips_stubs()->big_dyn_symtab() ? 20 : 16);
+}
+
+template<int size, bool big_endian>
+typename std::vector<struct hi16<size, big_endian> *>
+ Mips_relocate_functions<size, big_endian>::hi16_list;
+
+// Get the dynamic reloc section, creating it if necessary.
+
+template<int size, bool big_endian>
+typename Target_mips<size, big_endian>::Reloc_section*
+Target_mips<size, big_endian>::rel_dyn_section(Layout* layout)
+{
+ if (this->rel_dyn_ == NULL)
+ {
+ gold_assert(layout != NULL);
+ this->rel_dyn_ = new Reloc_section(parameters->options().combreloc());
+ layout->add_output_section_data(".rel.dyn", elfcpp::SHT_REL,
+ elfcpp::SHF_ALLOC, this->rel_dyn_,
+ ORDER_DYNAMIC_RELOCS, false);
+ }
+ return this->rel_dyn_;
+}
+
+template<int size, bool big_endian>
+typename Target_mips<size, big_endian>::Reloca_section*
+Target_mips<size, big_endian>::rela_dyn_section(Layout* layout)
+{
+ if (this->rela_dyn_ == NULL)
+ {
+ gold_assert(layout != NULL);
+ this->rela_dyn_ = new Reloca_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 GOT section, creating it if necessary.
+
+template<int size, bool big_endian>
+Mips_output_data_got<size, big_endian>*
+Target_mips<size, big_endian>::got_section(Symbol_table* symtab,
+ Layout* layout)
+{
+ if (this->got_ == NULL)
+ {
+ gold_assert(symtab != NULL && layout != NULL);
+
+ this->got_ = new Mips_output_data_got<size, big_endian>(symtab, layout);
+
+ this->got_plt_ = new Output_data_space(4, "** GOT PLT");
+
+ layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS,
+ elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE |
+ elfcpp::SHF_MIPS_GPREL,
+ this->got_, ORDER_DATA, false);
+
+ // Define _GLOBAL_OFFSET_TABLE_ at the start of the .got section.
+ symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL,
+ Symbol_table::PREDEFINED,
+ this->got_,
+ 0, 0, elfcpp::STT_OBJECT,
+ elfcpp::STB_GLOBAL,
+ elfcpp::STV_DEFAULT, 0,
+ false, false);
+ }
+
+ // Set _gp value, too.
+ this->set_gp(layout, symtab);
+
+ return this->got_;
+}
+
+template<int size, bool big_endian>
+void
+Mips_output_data_got<size, big_endian>::add_tls_gd_with_static_reloc(
+ unsigned int got_type,
+ Symbol* gsym)
+{
+ if (gsym->has_got_offset(got_type))
+ return;
+
+ // We are doing a static link. Just mark it as belong to module 1,
+ // the executable.
+ unsigned int got_offset = this->add_constant(1);
+ gsym->set_got_offset(got_type, got_offset);
+ got_offset = this->add_constant(0);
+ this->static_relocs_.push_back(Static_reloc(got_offset,
+ size == 32 ? elfcpp::R_MIPS_TLS_DTPREL32 : elfcpp::R_MIPS_TLS_DTPREL64,
+ gsym));
+}
+
+template<int size, bool big_endian>
+void
+Mips_output_data_got<size, big_endian>::add_tls_gd_local_reloc(
+ unsigned int got_type,
+ Sized_relobj_file<size, big_endian>* object,
+ unsigned int index)
+{
+ if (object->local_has_got_offset(index, got_type))
+ return;
+
+ unsigned int got_offset = this->add_constant(1);
+ object->set_local_got_offset(index, got_type, got_offset);
+ got_offset = this->add_constant(0);
+ this->static_relocs_.push_back(Static_reloc(got_offset,
+ size == 32 ? elfcpp::R_MIPS_TLS_DTPREL32 : elfcpp::R_MIPS_TLS_DTPREL64,
+ object, index));
+}
+
+// Calculate value of gp_.
+
+template<int size, bool big_endian>
+void
+Target_mips<size, big_endian>::set_gp(Layout* layout, Symbol_table* symtab)
+{
+ if (gp_ == NULL)
+ {
+ Sized_symbol<size>* sym =
+ static_cast<Sized_symbol<size>*>(symtab->lookup("_gp"));
+
+ if ((sym == NULL) || (sym->source() != Symbol::IS_CONSTANT))
+ {
+ Output_data *got_section = layout->find_output_section(".got");
+
+ gold_assert(got_section != NULL);
+
+ if (sym == NULL)
+ sym =static_cast<Sized_symbol<size>*>(symtab->define_in_output_data(
+ "_gp", NULL, Symbol_table::PREDEFINED,
+ got_section, 0x7ff0, 0,
+ elfcpp::STT_OBJECT,
+ elfcpp::STB_GLOBAL,
+ elfcpp::STV_DEFAULT,
+ 0, false, false));
+ else
+ {
+ sym->init_output_data("_gp", NULL, got_section, 0x7ff0, 0,
+ elfcpp::STT_OBJECT,
+ elfcpp::STB_GLOBAL,
+ elfcpp::STV_DEFAULT, 0,
+ false, false);
+ }
+ gold_assert(sym != NULL);
+ }
+
+ this->gp_ = sym;
+ }
+}
+
+// A class to handle the STUB data.
+
+template<int size, bool big_endian>
+class Mips_output_data_stub : public Output_section_data
+{
+ public:
+ typedef std::vector<Symbol *> symbol_list;
+ Mips_output_data_stub();
+
+ // Add an entry to the STUB.
+ void add_entry(Symbol_table* symtab,
+ Target_mips<size, big_endian>* target,
+ Symbol* gsym);
+
+ // Return the number of STUB entries.
+ unsigned int
+ entry_count() const
+ { return this->count_; }
+
+ // Add stub symbol
+ void
+ add_symbol(Symbol *sym)
+ { symbols.push_back(sym); }
+
+ // Get symbol on position n
+ Symbol *
+ symbol(unsigned int n)
+ { return symbols[n]; }
+
+ protected:
+ void do_adjust_output_section(Output_section* os);
+
+ private:
+ // Template for subsequent STUB entries.
+ static const uint32_t stub_entry[4];
+
+ // Set the final size.
+ void
+ set_final_data_size()
+ {
+ unsigned int full_count = this->count_ * 4;
+
+ this->set_data_size(full_count * 4);
+ }
+
+ // Write out the STUB data.
+ void
+ do_write(Output_file*);
+
+ // The number of STUB entries.
+ unsigned int count_;
+
+ // List of symbols used in stubs
+ symbol_list symbols;
+};
+
+// A class to handle the PLT data.
+
+template<int size, bool big_endian>
+class Mips_output_data_plt : public Output_section_data
+{
+ public:
+ typedef Output_data_reloc<elfcpp::SHT_REL, true,
+ size, big_endian> Reloc_section;
+
+ Mips_output_data_plt(Layout*, Output_data_space*);
+
+ // Add an entry to the PLT.
+ void add_entry(Symbol* gsym);
+
+ // Return the .rel.plt section data.
+ const Reloc_section* rel_plt() const
+ { return this->rel_; }
+
+ // Return the number of PLT entries.
+ unsigned int
+ entry_count() const
+ { return this->count_; }
+
+ // Return the offset of the first non-reserved PLT entry.
+ static unsigned int
+ first_plt_entry_offset()
+ { return sizeof(first_plt_entry[0]); }
+
+ // Return the size of a PLT entry.
+ static unsigned int
+ plt_entry_size()
+ { return sizeof(plt_entry); }
+
+ 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:
+ // Template for the first PLT entry.
+ static const uint32_t first_plt_entry[3][8];
+
+ // Template for subsequent PLT entries.
+ static const uint32_t plt_entry[4];
+
+ // Set the final size.
+ void
+ set_final_data_size()
+ {
+ unsigned int full_count = this->count_ * 4 + 8;
+
+ this->set_data_size(full_count * 4);
+ }
+
+ // MIPS abi types
+ enum Abi_type
+ {
+ MIPS_ABI_ERROR = -1, // Error when getting ABI type
+ MIPS_O32 = 0, // Mips O32 ABI
+ MIPS_N32 = 1, // Mips N32 ABI
+ MIPS_N64 = 2, // Mips N64 ABI
+ MIPS_O64 = 3, // Mips O64 ABI
+ MIPS_EABI32 = 4, // Mips 32 EABI
+ MIPS_EABI64 = 5, // Mips 64 EABI
+ };
+
+ // Get MIPS abi
+ Abi_type
+ abi(elfcpp::Elf_Word /*flags*/) const
+ {
+#if 0
+ // MIPS ABI2
+ if ((flags & elfcpp::EF_MIPS_ABI2) != 0)
+ {
+ switch (flags & elfcpp::EF_MIPS_ABI)
+ {
+ case elfcpp::E_MIPS_ABI_O32:
+ return MIPS_N32;
+ case elfcpp::E_MIPS_ABI_O64:
+ return MIPS_N64;
+ case elfcpp::E_MIPS_ABI_EABI32:
+ return MIPS_EABI32; // TODO AS: Check if this is correct!!!!
+ case elfcpp::E_MIPS_ABI_EABI64:
+ return MIPS_EABI64; // TODO AS: Check if this is correct!!!!
+ default:
+ return MIPS_ABI_ERROR;
+ }
+ }
+ else
+ {
+ switch (flags & elfcpp::EF_MIPS_ABI)
+ {
+ case elfcpp::E_MIPS_ABI_O32:
+ return MIPS_O32;
+ case elfcpp::E_MIPS_ABI_O64:
+ return MIPS_O64;
+ case elfcpp::E_MIPS_ABI_EABI32:
+ return MIPS_EABI32; // TODO AS: Check if this is correct!!!!
+ case elfcpp:: E_MIPS_ABI_EABI64:
+ return MIPS_EABI64; // TODO AS: Check if this is correct!!!!
+ default:
+ return MIPS_ABI_ERROR;
+ }
+ }
+#endif
+ // TODO AS: For now only support O32 ABI
+ return MIPS_O32;
+ }
+
+ // Write out the PLT data.
+ void
+ do_write(Output_file*);
+
+ // The reloc section.
+ Reloc_section* rel_;
+ // The .got.plt section.
+ Output_data_space* got_plt_;
+ // The number of PLT entries.
+ unsigned int count_;
+};
+
+// A class to handle the .MIPS.stubs data.
+
+template<int size, bool big_endian>
+class Mips_output_data_mips_stubs : public Output_section_data
+{
+ public:
+ Mips_output_data_mips_stubs(Layout* layout,
+ Mips_output_data_got<size, big_endian>* got, Sized_symbol<size>* gp)
+ : Output_section_data(size == 32 ? 4 : 8), count_(1), got_(got), gp_(gp),
+ layout_(layout), big_dyn_symtab_(false)
+ { };
+
+ // Add an entry to the .MIPS.stubs.
+ void add_entry(Symbol* gsym);
+
+ // Return the number of .MIPS.stubs entries.
+ unsigned int
+ entry_count() const
+ { return this->count_; }
+
+ // Return if symbol is in .plt
+ bool
+ is_plt_symbol(Sized_symbol<size> *sym)
+ {
+ if (this->symbols_.size() == 0)
+ return true;
+
+ return (this->symbols_.count(sym) == 0);
+ }
+
+ // Remove symbol that should not have entry.
+ void
+ remove(Symbol *sym)
+ {
+ if (this->symbols_.size() == 0)
+ return;
+
+ if (this->symbols_.count(sym) == 0)
+ return;
+
+ this->symbols_.erase(sym);
+ --this->count_;
+ }
+
+ // Set if dynamic symbole table has more then 0x10000 entries.
+ void
+ set_big_dyn_symtab(bool big_dyn_symtab)
+ { big_dyn_symtab_ = big_dyn_symtab; }
+
+ // If dynamic symbole table has more then 0x10000 entries.
+ bool
+ big_dyn_symtab()
+ { return this->big_dyn_symtab_; }
+
+ // Fix values of used symbols in symbol table.
+ void
+ fix_symbol_values();
+
+ 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, _(".MIPS.stubs")); }
+
+ private:
+ // Template for the .MIPS.stubs instructions.
+ // lw t9, .got offset from _gp
+ unsigned long
+ stub_lw()
+ { return 0x8f990000 | ((this->got_->address() - this->gp_->value()) & 0xffff); }
+
+ // addu t7,ra
+ unsigned long
+ stub_move()
+ { return 0x03e07821; }
+
+ // lui t8,val
+ unsigned long
+ stub_lui(int val)
+ { return (0x3c180000 + (val & 0xffff)); }
+
+ //jalr t9,ra
+ unsigned long
+ stub_jalr()
+ { return 0x0320f809; }
+
+ // ori t8,t8,val
+ unsigned long
+ stub_ori(int val)
+ { return (0x37180000 + (val & 0xffff)); }
+
+ // ori t8,zero,val unsigned
+ unsigned long
+ stub_li16u(int val)
+ { return (0x34180000 + (val & 0xffff)); }
+
+ // addiu t8,zero,val sign extended
+ unsigned long
+ stub_li16s(int val)
+ { return (0x24180000 + (val & 0xffff)); }
+
+ // Set the final size.
+ void
+ set_final_data_size()
+ {
+ unsigned int full_count = this->count_ * (this->big_dyn_symtab_ ? 5 : 4);
+
+ this->set_data_size(full_count * 4);
+ }
+
+ // Write out the .MIPS.stubs data.
+ void
+ do_write(Output_file*);
+
+ // The number of .MIPS.stubs entries.
+ unsigned int count_;
+ // .got section
+ Mips_output_data_got<size, big_endian>* got_;
+ // _gp symbol
+ Sized_symbol<size>* gp_;
+ // Layout
+ Layout* layout_;
+ // Set if dynamic symbol table has more then 0x10000 entries.
+ bool big_dyn_symtab_;
+ // .MIPS.stubs symbols
+ std::set<Symbol *> symbols_;
+};
+
+template<int size, bool big_endian>
+void
+Mips_output_data_mips_stubs<size, big_endian>::do_adjust_output_section(
+ Output_section* os)
+{ os->set_entsize(0); }
+
+// Add an entry to the .MIPS.stubs.
+
+template<int size, bool big_endian>
+void
+Mips_output_data_mips_stubs<size, big_endian>::add_entry(Symbol* sym)
+{
+ gold_assert(!sym->has_plt_offset());
+ sym->set_plt_offset(0*this->count_);
+
+ this->symbols_.insert(sym);
+
+ sym->set_needs_dynsym_entry();
+ ++this->count_;
+}
+
+// Fix values of used symbols in symbol table.
+template<int size, bool big_endian>
+void
+Mips_output_data_mips_stubs<size, big_endian>::fix_symbol_values()
+{
+ int i = 0;
+ for (std::set<Symbol *>::const_iterator p = this->symbols_.begin();
+ p != this->symbols_.end(); ++p, i++)
+ {
+ Sized_symbol<size> *sym = static_cast<Sized_symbol<size>*> (*p);
+ elfcpp::Elf_Xword value = this->address() + i
+ * (this->big_dyn_symtab_ ? 20 : 16);
+ sym->set_value(value);
+ }
+}
+
+// Write out the .MIPS.stubs. This uses the hand-coded instructions and
+// adjusts them as needed.
+
+template<int size, bool big_endian>
+void
+Mips_output_data_mips_stubs<size, big_endian>::do_write(Output_file* of)
+{
+ typedef typename elfcpp::Elf_types<size>::Elf_Addr Mips_address;
+
+ // Read processor-specific flags in ELF file header.
+ const unsigned char* pehdr = of->get_output_view(elfcpp::file_header_offset,
+ elfcpp::Elf_sizes<size>::ehdr_size);
+ elfcpp::Ehdr<size, big_endian> ehdr(pehdr);
+
+ const off_t offset = this->offset();
+ const section_size_type oview_size =
+ convert_to_section_size_type(this->data_size()) +
+ (this->big_dyn_symtab_ * (this->symbols_.size() + 1) * 4);
+ unsigned char* const oview = of->get_output_view(offset, oview_size);
+
+ unsigned char* pov = oview;
+
+ for (std::set<Symbol *>::const_iterator p = this->symbols_.begin();
+ p != this->symbols_.end(); ++p)
+ {
+ // Fill the stub.
+ uint32_t stub_insn0 = stub_lw();
+ elfcpp::Swap<32, big_endian>::writeval(pov, stub_insn0);
+ pov += 4;
+ uint32_t stub_insn1 = stub_move();
+ elfcpp::Swap<32, big_endian>::writeval(pov, stub_insn1);
+ pov += 4;
+ if (this->big_dyn_symtab_)
+ {
+ uint32_t stub_insn2 = stub_lui(((*p)->dynsym_index() >> 16) & 0x7fff);
+ elfcpp::Swap<32, big_endian>::writeval(pov, stub_insn2);
+ pov += 4;
+ }
+ uint32_t stub_insn3 = stub_jalr();
+ elfcpp::Swap<32, big_endian>::writeval(pov, stub_insn3);
+ pov += 4;
+ if (this->big_dyn_symtab_)
+ {
+ uint32_t stub_insn4 = stub_ori((*p)->dynsym_index() & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pov, stub_insn4);
+ }
+ else if ((*p)->dynsym_index() & ~0x7fff)
+ {
+ uint32_t stub_insn5 = stub_li16u((*p)->dynsym_index() & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pov, stub_insn5);
+ }
+ else
+ {
+ uint32_t stub_insn6 = stub_li16s((*p)->dynsym_index());
+ elfcpp::Swap<32, big_endian>::writeval(pov, stub_insn6);
+ }
+ pov += 4;
+ }
+
+ elfcpp::Swap<32, big_endian>::writeval(pov, 0UL);
+ pov += 4;
+ elfcpp::Swap<32, big_endian>::writeval(pov, 0UL);
+ pov += 4;
+ elfcpp::Swap<32, big_endian>::writeval(pov, 0UL);
+ pov += 4;
+ elfcpp::Swap<32, big_endian>::writeval(pov, 0UL);
+ pov += 4;
+
+ if (this->big_dyn_symtab_)
+ {
+ elfcpp::Swap<32, big_endian>::writeval(pov, 0UL);
+ 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. The ordinary .got section is an argument,
+// since we need to refer to the start.
+
+template<int size, bool big_endian>
+Mips_output_data_plt<size, big_endian>::Mips_output_data_plt(Layout* layout,
+ Output_data_space* got_plt)
+ : Output_section_data(size == 32 ? 4 : 8), got_plt_(got_plt), count_(0)
+{
+ this->rel_ = new Reloc_section(false);
+ layout->add_output_section_data(".rel.plt", elfcpp::SHT_REL,
+ elfcpp::SHF_ALLOC, this->rel_,
+ ORDER_DYNAMIC_PLT_RELOCS, false);
+}
+
+template<int size, bool big_endian>
+void
+Mips_output_data_plt<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
+Mips_output_data_plt<size, big_endian>::add_entry(Symbol* gsym)
+{
+ gold_assert(!gsym->has_plt_offset());
+ section_offset_type plt_offset = (this->count_) * sizeof(plt_entry)
+ + sizeof(first_plt_entry[0]);
+ gsym->set_plt_offset(plt_offset);
+
+ ++this->count_;
+
+ section_offset_type got_offset = this->got_plt_->current_data_size();
+
+ // Every PLT entry needs a GOT entry which points back to the PLT
+ // entry (this will be changed by the dynamic linker, normally
+ // lazily when the function is called).
+ this->got_plt_->set_current_data_size(got_offset + 4);
+
+ gsym->set_needs_dynsym_entry();
+ this->rel_->add_global(gsym, elfcpp::R_MIPS_JUMP_SLOT, this->got_plt_,
+ got_offset);
+}
+
+// Mips PLTs.
+
+// The first entry in the PLT.
+
+template<int size, bool big_endian>
+const uint32_t Mips_output_data_plt<size, big_endian>::first_plt_entry[3][8] =
+{
+ // The format of the first PLT entry in an O32 executable.
+ {
+ 0x3c1c0000, // lui $28, %hi(&GOTPLT[0])
+ 0x8f990000, // lw $25, %lo(&GOTPLT[0])($28)
+ 0x279c0000, // addiu $28, $28, %lo(&GOTPLT[0])
+ 0x031cc023, // subu $24, $24, $28
+ 0x03e07821, // move $15, $31
+ 0x0018c082, // srl $24, $24, 2
+ 0x0320f809, // jalr $25
+ 0x2718fffe // subu $24, $24, 2
+ },
+
+ // The format of the first PLT entry in an N32 executable. Different
+ // because gp ($28) is not available; we use t2 ($14) instead.
+ {
+ 0x3c0e0000, // lui $14, %hi(&GOTPLT[0])
+ 0x8dd90000, // lw $25, %lo(&GOTPLT[0])($14)
+ 0x25ce0000, // addiu $14, $14, %lo(&GOTPLT[0])
+ 0x030ec023, // subu $24, $24, $14
+ 0x03e07821, // move $15, $31
+ 0x0018c082, // srl $24, $24, 2
+ 0x0320f809, // jalr $25
+ 0x2718fffe // subu $24, $24, 2
+ },
+
+ // The format of the first PLT entry in an N64 executable. Different
+ // from N32 because of the increased size of GOT entries.
+ {
+ 0x3c0e0000, // lui $14, %hi(&GOTPLT[0])
+ 0xddd90000, // ld $25, %lo(&GOTPLT[0])($14)
+ 0x25ce0000, // addiu $14, $14, %lo(&GOTPLT[0])
+ 0x030ec023, // subu $24, $24, $14
+ 0x03e07821, // move $15, $31
+ 0x0018c0c2, // srl $24, $24, 3
+ 0x0320f809, // jalr $25
+ 0x2718fffe // subu $24, $24, 2
+ }
+};
+
+// Subsequent entries in the PLT.
+
+template<int size, bool big_endian>
+const uint32_t Mips_output_data_plt<size, big_endian>::plt_entry[4] =
+{
+ 0x3c0f0000, // lui $15, %hi(.got.plt entry)
+ 0x8df90000, // l[wd] $25, %lo(.got.plt entry)($15)
+ 0x03200008, // jr $25
+ 0x25f80000 // addiu $24, $15, %lo(.got.plt entry)
+};
+
+// Write out the PLT. This uses the hand-coded instructions above,
+// and adjusts them as needed.
+
+template<int size, bool big_endian>
+void
+Mips_output_data_plt<size, big_endian>::do_write(Output_file* of)
+{
+ typedef typename elfcpp::Elf_types<size>::Elf_Addr Mips_address;
+
+ // Read processor-specific flags in ELF file header.
+ const unsigned char* pehdr = of->get_output_view(elfcpp::file_header_offset,
+ elfcpp::Elf_sizes<size>::ehdr_size);
+ elfcpp::Ehdr<size, big_endian> ehdr(pehdr);
+ const size_t abi = this->abi(ehdr.get_e_flags());
+
+ 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);
+
+ const off_t got_file_offset = this->got_plt_->offset();
+ const section_size_type got_size =
+ convert_to_section_size_type(this->got_plt_->data_size());
+ unsigned char* const got_view = of->get_output_view(got_file_offset,
+ got_size);
+ unsigned char* pov = oview;
+
+ Mips_address plt_address = this->address();
+ Mips_address got_address = this->got_plt_->address();
+
+ uint32_t plt_insn0 = first_plt_entry[abi][0] | (((got_address + 0x8000) >> 16) & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pov, plt_insn0);
+ uint32_t plt_insn1 = first_plt_entry[abi][1] | (got_address & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pov + 4, plt_insn1);
+ uint32_t plt_insn2 = first_plt_entry[abi][2] | (got_address & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pov + 8, plt_insn2);
+
+ for (size_t i = 3; i < 8; i++)
+ elfcpp::Swap<32, big_endian>::writeval(pov + i * 4,
+ first_plt_entry[abi][i]);
+
+ pov += sizeof(first_plt_entry[abi]);
+
+ unsigned char* got_pov = got_view;
+
+ memset(got_pov, 0, 8);
+ got_pov += 8;
+
+ const int rel_size = elfcpp::Elf_sizes<32>::rel_size;
+ unsigned int plt_offset = sizeof(first_plt_entry[abi]);
+ unsigned int plt_rel_offset = 0;
+ unsigned int got_offset = 8;
+ const unsigned int count = this->count_;
+ for (unsigned int i = 0;
+ i < count;
+ ++i,
+ pov += sizeof(plt_entry),
+ got_pov += 4,
+ plt_offset += sizeof(plt_entry),
+ plt_rel_offset += rel_size,
+ got_offset += 4)
+ {
+ // Set and adjust the PLT entry itself.
+ int32_t offset = (got_address + got_offset);
+
+ uint32_t plt_insn0 = plt_entry[0] | (((offset + 0x8000) >> 16) & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pov, plt_insn0);
+ uint32_t plt_insn1 = plt_entry[1] | (offset & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pov + 4, plt_insn1);
+ uint32_t plt_insn2 = plt_entry[2];
+ elfcpp::Swap<32, big_endian>::writeval(pov + 8, plt_insn2);
+ uint32_t plt_insn3 = plt_entry[3] | (offset & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pov + 12, plt_insn3);
+
+ // Set the entry in the GOT.
+ elfcpp::Swap<32, big_endian>::writeval(got_pov, plt_address);
+ }
+
+ gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
+ gold_assert(static_cast<section_size_type>(got_pov - got_view) == got_size);
+
+ of->write_output_view(offset, oview_size, oview);
+ of->write_output_view(got_file_offset, got_size, got_view);
+}
+
+// Create a GOT entry for the TLS module index.
+
+template<int size, bool big_endian>
+unsigned int
+Target_mips<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);
+ Mips_output_data_got<size, big_endian>* got =
+ this->got_section(symtab, layout);
+ unsigned int got_offset;
+ if (!parameters->doing_static_link())
+ {
+ got_offset = got->add_constant(0);
+
+ Reloc_section* rel_dyn = this->rel_dyn_section(layout);
+ rel_dyn->add_local(object, 0,
+ size == 32 ? elfcpp::R_MIPS_TLS_DTPMOD32 :
+ elfcpp::R_MIPS_TLS_DTPMOD64, got,
+ got_offset);
+ }
+ else
+ {
+ // We are doing a static link. Just mark it as belong to module 1,
+ // the executable.
+ got_offset = got->add_constant(1);
+ }
+
+ got->add_constant(0);
+ this->got_mod_index_offset_ = got_offset;
+ }
+
+ return this->got_mod_index_offset_;
+}
+
+// Create a PLT entry for a global symbol.
+
+template<int size, bool big_endian>
+void
+Target_mips<size, big_endian>::make_plt_entry(Symbol_table* symtab,
+ Layout* layout,
+ Symbol* gsym)
+{
+ if (gsym->has_plt_offset())
+ return;
+
+ if (this->plt_ == NULL)
+ {
+ // Create the GOT section first.
+ this->got_section(symtab, layout);
+
+ // Create .rel.dyn section.
+ this->rel_dyn_section(layout);
+
+ layout->add_output_section_data(".got.plt", elfcpp::SHT_PROGBITS,
+ (elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE),
+ this->got_plt_, ORDER_DATA, false);
+
+ // The first two entries are reserved.
+ this->got_plt_->set_current_data_size(2 * 4);
+
+ this->plt_ = new Mips_output_data_plt<size, big_endian>(layout,
+ this->got_plt_);
+ layout->add_output_section_data(".plt", elfcpp::SHT_PROGBITS,
+ (elfcpp::SHF_ALLOC
+ | elfcpp::SHF_EXECINSTR),
+ this->plt_, ORDER_PLT, false);
+
+ // Define _PROCEDURE_LINKAGE_TABLE_ at the start of the .plt section.
+ symtab->define_in_output_data("_PROCEDURE_LINKAGE_TABLE_", NULL,
+ Symbol_table::PREDEFINED,
+ this->plt_,
+ 0, 0, elfcpp::STT_FUNC,
+ elfcpp::STB_LOCAL,
+ elfcpp::STV_DEFAULT, 0,
+ false, false);
+ }
+
+ this->plt_->add_entry(gsym);
+}
+
+
+// Create a .MIPS.stubs entry for a global symbol.
+
+template<int size, bool big_endian>
+void
+Target_mips<size, big_endian>::make_mips_stubs_entry(Symbol_table* symtab,
+ Layout* layout,
+ Symbol* gsym)
+{
+ if (gsym->has_plt_offset())
+ return;
+
+ if (this->mips_stubs_ == NULL)
+ {
+ // Create the .MIPS.stubs section first.
+
+ this->mips_stubs_ = new Mips_output_data_mips_stubs<size, big_endian>
+ (layout, this->got_section(symtab, layout), this->gp_);
+
+ layout->add_output_section_data(".MIPS.stubs", elfcpp::SHT_PROGBITS,
+ (elfcpp::SHF_ALLOC
+ | elfcpp::SHF_EXECINSTR),
+ this->mips_stubs_, ORDER_PLT, false);
+ }
+ this->mips_stubs_->add_entry(gsym);
+}
+
+template<int size, bool big_endian>
+Mips_output_data_stub<size, big_endian>::Mips_output_data_stub()
+ : Output_section_data(size == 32 ? 4 : 8), count_(0)
+{}
+
+template<int size, bool big_endian>
+void
+Mips_output_data_stub<size, big_endian>::do_adjust_output_section(
+ Output_section* os)
+{
+ os->set_entsize(0);
+}
+
+// Add an entry to the STUB.
+
+template<int size, bool big_endian>
+void
+Mips_output_data_stub<size, big_endian>::add_entry(Symbol_table* symtab,
+ Target_mips<size, big_endian>* target,
+ Symbol* gsym)
+{
+ Symbol* sym;
+ char* buffer = new char[strlen(gsym->name()) + 6];
+ gold_assert(buffer != NULL);
+
+ section_offset_type stub_offset = this->count_ * 4 * 4;
+
+ ++this->count_;
+
+ sprintf(buffer, ".pic.%s", gsym->name());
+
+ sym = symtab->define_in_output_data(buffer, NULL,
+ Symbol_table::PREDEFINED,
+ target->stub(),
+ stub_offset, 0x10, elfcpp::STT_FUNC,
+ elfcpp::STB_GLOBAL,
+ elfcpp::STV_DEFAULT, 0,
+ false, false);
+
+ target->add_stub_symbol(gsym->name(), sym);
+ this->add_symbol(gsym);
+
+ delete [] buffer;
+}
+
+
+// Create a STUB entry for a global symbol.
+
+template<int size, bool big_endian>
+void
+Target_mips<size, big_endian>::make_stub_entry(Layout* layout)
+{
+ if (this->stub_ == NULL)
+ {
+ this->stub_ = new Mips_output_data_stub<size, big_endian>();
+ layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS,
+ (elfcpp::SHF_ALLOC
+ | elfcpp::SHF_EXECINSTR
+ | elfcpp::SHF_WRITE),
+ this->stub_, ORDER_TEXT, false);
+ }
+}
+
+template<int size, bool big_endian>
+const uint32_t Mips_output_data_stub<size, big_endian>::stub_entry[4] =
+{
+ 0x3c190000, // lui $25, %hi(func)
+ 0x08000000, // j func
+ 0x27390000, // add $25, $25, %lo(func)
+ 0x00000000 // nop
+};
+
+// Write out the STUB. This uses the hand-coded instructions above,
+// and adjusts them as needed.
+
+template<int size, bool big_endian>
+void
+Mips_output_data_stub<size, big_endian>::do_write(Output_file* of)
+{
+ typedef typename elfcpp::Elf_types<size>::Elf_Addr Mips_address;
+
+ 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;
+
+ const unsigned int count = this->count_;
+ for (unsigned int i = 0;
+ i < count;
+ ++i,
+ pov += 4*4)
+ {
+ Sized_symbol<size> *sym = static_cast<Sized_symbol<size>*>
+ (this->symbol(i));
+
+ unsigned int value = (unsigned int)sym->value();
+ gold_assert(offset >= 0 && offset < 0x0fffffff);
+ uint32_t stub_insn0 = stub_entry[0] | (((value + 0x8000) >> 16) & 0xffff);
+ elfcpp::Swap<32, big_endian>::writeval(pov, stub_insn0);
+ uint32_t stub_insn1 = stub_entry[1] | (((value >> 2) & 0x03ffffff));
+ elfcpp::Swap<32, big_endian>::writeval(pov + 4, stub_insn1);
+ uint32_t stub_insn2 = stub_entry[2] | ((value & 0x0000ffff));
+ elfcpp::Swap<32, big_endian>::writeval(pov + 8, stub_insn2);
+ uint32_t stub_insn3 = stub_entry[3];
+ elfcpp::Swap<32, big_endian>::writeval(pov + 12, stub_insn3);
+ }
+ gold_assert(static_cast<section_size_type>(pov - oview) == oview_size);
+
+ of->write_output_view(offset, oview_size, oview);
+}
+
+// Process the relocations to determine unreferenced sections for
+// garbage collection.
+
+template<int size, bool big_endian>
+void
+Target_mips<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_mips<size, big_endian> Mips;
+ typedef typename Target_mips<size, big_endian>::Scan Scan;
+
+ gold::gc_process_relocs<size, big_endian, Mips, elfcpp::SHT_REL, Scan,
+ typename Target_mips::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 the relocations to look for symbol adjustments.
+
+template<int size, bool big_endian>
+void
+Target_mips<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_mips<size, big_endian> Mips;
+ typedef typename Target_mips<size, big_endian>::Scan Scan;
+
+ if (sh_type == elfcpp::SHT_REL)
+ gold::scan_relocs<size, big_endian, Mips, elfcpp::SHT_REL, Scan>(
+ symtab,
+ layout,
+ this,
+ object,
+ data_shndx,
+ prelocs,
+ reloc_count,
+ output_section,
+ needs_special_offset_handling,
+ local_symbol_count,
+ plocal_symbols);
+ else if (sh_type == elfcpp::SHT_RELA)
+ gold::scan_relocs<size, big_endian, Mips, elfcpp::SHT_RELA, Scan>(
+ symtab,
+ layout,
+ this,
+ object,
+ data_shndx,
+ prelocs,
+ reloc_count,
+ output_section,
+ needs_special_offset_handling,
+ local_symbol_count,
+ plocal_symbols);
+}
+
+template<int size, bool big_endian>
+bool
+Target_mips<size, big_endian>::mips_32bit_flags(elfcpp::Elf_Word flags)
+{
+ return ((flags & elfcpp::EF_MIPS_32BITMODE) != 0
+ || (flags & elfcpp::EF_MIPS_ABI) == elfcpp::E_MIPS_ABI_O32
+ || (flags & elfcpp::EF_MIPS_ABI) == elfcpp::E_MIPS_ABI_EABI32
+ || (flags & elfcpp::EF_MIPS_ARCH) == elfcpp::E_MIPS_ARCH_1
+ || (flags & elfcpp::EF_MIPS_ARCH) == elfcpp::E_MIPS_ARCH_2
+ || (flags & elfcpp::EF_MIPS_ARCH) == elfcpp::E_MIPS_ARCH_32
+ || (flags & elfcpp::EF_MIPS_ARCH) == elfcpp::E_MIPS_ARCH_32R2);
+}
+
+template<int size, bool big_endian>
+bool
+Target_mips<size, big_endian>::mips_mach_extends(elfcpp::Elf_Word base,
+ elfcpp::Elf_Word extension)
+{
+ unsigned int i;
+
+ if (base == extension)
+ return true;
+
+ if ((base == elfcpp::E_MIPS_ARCH_32)
+ && mips_mach_extends(elfcpp::E_MIPS_ARCH_64, extension))
+ return true;
+
+ if ((base == elfcpp::E_MIPS_ARCH_32R2)
+ && mips_mach_extends(elfcpp::E_MIPS_ARCH_64R2, extension))
+ return true;
+
+ for (i = 0; i < this->extensions_.size(); i++)
+ if (extension == this->extensions_[i].second)
+ {
+ extension = this->extensions_[i].first;
+ if (extension == base)
+ return true;
+ }
+
+ return false;
+}
+
+template<int size, bool big_endian>
+void
+Target_mips<size, big_endian>::merge_processor_specific_flags(const char* name,
+ elfcpp::Elf_Word in_flags)
+{
+ elfcpp::Elf_Word out_flags = this->processor_specific_flags();
+
+ // If flags are not set yet, just copy them.
+ if (out_flags == 0)
+ this->set_processor_specific_flags(in_flags);
+ else
+ {
+ elfcpp::Elf_Word new_flags = out_flags;
+ new_flags |= in_flags & elfcpp::EF_MIPS_NOREORDER;
+
+ // Check flag compatibility.
+ in_flags &= ~elfcpp::EF_MIPS_NOREORDER;
+ out_flags &= ~elfcpp::EF_MIPS_NOREORDER;
+
+ // Some IRIX 6 BSD-compatibility objects have this bit set. It
+ // doesn't seem to matter.
+ in_flags &= ~elfcpp::EF_MIPS_XGOT;
+ out_flags &= ~elfcpp::EF_MIPS_XGOT;
+
+ // MIPSpro generates ucode info in n64 objects. Again, we should
+ // just be able to ignore this.
+ in_flags &= ~elfcpp::EF_MIPS_UCODE;
+ out_flags &= ~elfcpp::EF_MIPS_UCODE;
+
+ if ((in_flags & elfcpp::EF_MIPS_DYNAMIC) != 0)
+ in_flags |= elfcpp::EF_MIPS_PIC | elfcpp::EF_MIPS_CPIC;
+
+ // Input flags are same as output, do nothing.
+ if (in_flags == out_flags)
+ return;
+
+ // TODO AS: If input file has no sections, its flags are not important.
+
+ if (((in_flags & (elfcpp::EF_MIPS_PIC | elfcpp::EF_MIPS_CPIC)) != 0)
+ != ((out_flags & (elfcpp::EF_MIPS_PIC | elfcpp::EF_MIPS_CPIC)) != 0))
+ gold_warning(_("Linking abicalls files with non-abicalls files."));
+
+ if (in_flags & (elfcpp::EF_MIPS_PIC | elfcpp::EF_MIPS_CPIC))
+ new_flags |= elfcpp::EF_MIPS_CPIC;
+ if (!(in_flags & elfcpp::EF_MIPS_PIC))
+ new_flags &= ~elfcpp::EF_MIPS_PIC;
+
+ in_flags &= ~(elfcpp::EF_MIPS_PIC | elfcpp::EF_MIPS_CPIC);
+ out_flags &= ~(elfcpp::EF_MIPS_PIC | elfcpp::EF_MIPS_CPIC);
+
+ // Compare the ISAs.
+ if (mips_32bit_flags(out_flags) != mips_32bit_flags(in_flags))
+ {
+ gold_error(_("Source object %s is %d-bit, but output is %d-bit"),
+ name, mips_32bit_flags(in_flags) ? 32 : 64,
+ mips_32bit_flags(out_flags) ? 32 : 64);
+ }
+ else if (!mips_mach_extends(in_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH),
+ out_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH)))
+ {
+ // Input ISA is not set. Just skip it.
+ if ((in_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH)) == 0);
+ // ISA is not set yet, do it now.
+ else if ((out_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH)) == 0)
+ new_flags |= in_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH | elfcpp::EF_MIPS_32BITMODE);
+ // OBFD's ISA isn't the same as, or an extension of, IBFD's.
+ else if (mips_mach_extends(out_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH),
+ in_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH)))
+ {
+ // Copy the architecture info from IBFD to OBFD. Also copy
+ // the 32-bit flag (if set) so that we continue to recognise
+ // OBFD as a 32-bit binary.
+ new_flags &= ~(elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH);
+ new_flags |=
+ in_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH | elfcpp::EF_MIPS_32BITMODE);
+
+ // Copy across the ABI flags if OBFD doesn't use them
+ // and if that was what caused us to treat IBFD as 32-bit.
+ if ((out_flags & elfcpp::EF_MIPS_ABI) == 0
+ && mips_32bit_flags(in_flags)
+ && !mips_32bit_flags(in_flags & ~elfcpp::EF_MIPS_ABI))
+ new_flags |= in_flags & elfcpp::EF_MIPS_ABI;
+ }
+ else
+ {
+ // The ISAs aren't compatible.
+ gold_error(_("%s ISA is 0x%x and it is not compatible with current"
+ " ISA 0x%x"),
+ name, in_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH),
+ out_flags & (elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH));
+ }
+ }
+
+ in_flags &= ~(elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH | elfcpp::EF_MIPS_32BITMODE);
+ out_flags &= ~(elfcpp::EF_MIPS_ARCH | elfcpp::EF_MIPS_MACH | elfcpp::EF_MIPS_32BITMODE);
+
+ // Compare ABIs. TODO AS: The 64-bit ABI does not use EF_MIPS_ABI.
+ // But, it does set EI_CLASS differently from any 32-bit ABI.
+ if ((in_flags & elfcpp::EF_MIPS_ABI) != (out_flags & elfcpp::EF_MIPS_ABI))
+ {
+ // Only error if both are set (to different values).
+ if ((in_flags & elfcpp::EF_MIPS_ABI) && (out_flags & elfcpp::EF_MIPS_ABI))
+ {
+ gold_error(_("%s ABI %d is different then current ABI %d"),
+ name, in_flags & elfcpp::EF_MIPS_ABI,
+ out_flags & elfcpp::EF_MIPS_ABI);
+ }
+
+ in_flags &= ~elfcpp::EF_MIPS_ABI;
+ out_flags &= ~elfcpp::EF_MIPS_ABI;
+ }
+
+ // Compare ABIs.
+ if ((in_flags & elfcpp::EF_MIPS_ABI2) != (out_flags & elfcpp::EF_MIPS_ABI2))
+ {
+ gold_error(_("%s is ABI%s while output is ABI%s"),
+ name, ((in_flags & elfcpp::EF_MIPS_ABI2) ? "2" : ""),
+ ((out_flags & elfcpp::EF_MIPS_ABI2) ? "2" : ""));
+
+ in_flags &= ~elfcpp::EF_MIPS_ABI2;
+ out_flags &= ~elfcpp::EF_MIPS_ABI2;
+ }
+
+ // Compare ASEs. Forbid linking MIPS16 and microMIPS ASE modules together
+ // and allow arbitrary mixing of the remaining ASEs (retain the union).
+ if ((in_flags & elfcpp::EF_MIPS_ARCH_ASE) != (out_flags & elfcpp::EF_MIPS_ARCH_ASE))
+ {
+ int old_micro = out_flags & elfcpp::EF_MIPS_ARCH_ASE_MICROMIPS;
+ int new_micro = in_flags & elfcpp::EF_MIPS_ARCH_ASE_MICROMIPS;
+ int old_m16 = out_flags & elfcpp::EF_MIPS_ARCH_ASE_M16;
+ int new_m16 = in_flags & elfcpp::EF_MIPS_ARCH_ASE_M16;
+ int micro_mis = old_m16 && new_micro;
+ int m16_mis = old_micro && new_m16;
+
+ if (m16_mis || micro_mis)
+ {
+ gold_error(_("%s ASE is %s while output ASE is %s"),
+ name, m16_mis ? "MIPS16" : "microMIPS",
+ m16_mis ? "microMIPS" : "MIPS16");
+ }
+
+ new_flags |= in_flags & elfcpp::EF_MIPS_ARCH_ASE;
+
+ in_flags &= ~ elfcpp::EF_MIPS_ARCH_ASE;
+ out_flags &= ~ elfcpp::EF_MIPS_ARCH_ASE;
+ }
+
+ // Warn about any other mismatches
+ if (in_flags != out_flags)
+ {
+ gold_error(_("%s uses different flags 0x%x then output 0x%x"),
+ name, in_flags, out_flags);
+ }
+
+ this->set_processor_specific_flags(new_flags);
+ }
+}
+
+// Finalize the sections.
+
+template <int size, bool big_endian>
+void
+Target_mips<size, big_endian>::do_finalize_sections(Layout* layout,
+ const Input_objects* input_objects,
+ Symbol_table* symtab)
+{
+ // Add NULL segment.
+ if (!parameters->options().relocatable())
+ layout->make_output_segment(elfcpp::PT_NULL, 0);
+
+ for (Layout::Section_list::const_iterator p = layout->section_list().begin();
+ p != layout->section_list().end(); ++p)
+ if ((*p)->type() == elfcpp::SHT_MIPS_REGINFO)
+ {
+ Mips_output_section_reginfo<size>* reginfo =
+ Mips_output_section_reginfo<size>::as_mips_output_section_reginfo(*p);
+
+ if (this->gp() == NULL)
+ reginfo->set_gp(0);
+ else
+ reginfo->set_gp(this->gp());
+
+ if (!parameters->options().relocatable())
+ {
+ Output_segment *reginfo_segment =
+ layout->make_output_segment(elfcpp::PT_MIPS_REGINFO, elfcpp::PF_R);
+ reginfo_segment->add_output_section_to_nonload(reginfo, elfcpp::PF_R);
+ }
+
+ // There is only one .reginfo section
+ break;
+ }
+
+ if (this->got_section())
+ {
+ this->got_section()->add_global_relocs();
+ this->got_section()->add_global_tls_relocs();
+ }
+
+ // Merge processor-specific flags.
+ for (Input_objects::Relobj_iterator p = input_objects->relobj_begin();
+ p != input_objects->relobj_end();
+ ++p)
+ {
+ Sized_relobj_file<size, big_endian>* relobj =
+ static_cast<const Sized_relobj_file<size, big_endian>*>(*p);
+
+ Input_file::Format format = relobj->input_file()->format();
+ if (format == Input_file::FORMAT_ELF)
+ {
+ // Read processor-specific flags in ELF file header.
+ const unsigned char* pehdr = relobj->
+ get_view(elfcpp::file_header_offset,
+ elfcpp::Elf_sizes<size>::ehdr_size,
+ true, false);
+
+ elfcpp::Ehdr<size, big_endian> ehdr(pehdr);
+ elfcpp::Elf_Word in_flags = ehdr.get_e_flags();
+
+ this->merge_processor_specific_flags(relobj->name().c_str(), in_flags);
+ }
+ }
+
+ for (Input_objects::Dynobj_iterator p = input_objects->dynobj_begin();
+ p != input_objects->dynobj_end();
+ ++p)
+ {
+ Sized_dynobj<size, big_endian>* dynobj =
+ static_cast<const Sized_dynobj<size, big_endian>*>(*p);
+
+ // Read processor-specific flags.
+ const unsigned char* pehdr = dynobj->get_view(elfcpp::file_header_offset,
+ elfcpp::Elf_sizes<size>::ehdr_size,
+ true, false);
+
+ elfcpp::Ehdr<size, big_endian> ehdr(pehdr);
+ elfcpp::Elf_Word in_flags = ehdr.get_e_flags();
+
+ this->merge_processor_specific_flags(dynobj->name().c_str(), in_flags);
+ }
+
+ // Fill in some more dynamic tags.
+ const Reloc_section* rel_plt = (this->plt_ == NULL
+ ? NULL
+ : this->plt_->rel_plt());
+ layout->add_target_dynamic_tags(true, this->got_, rel_plt,
+ this->rel_dyn_, true, false);
+
+ Output_data_dynamic* const odyn = layout->dynamic_data();
+ if ((odyn) &&
+ (!parameters->options().relocatable() && !parameters->doing_static_link()))
+ {
+ // In case there is no .got section, create one.
+ this->got_section(symtab, layout);
+
+ unsigned int d_val;
+ // This element holds a 32-bit version id for the Runtime
+ // Linker Interface. This will start at integer value 1.
+ d_val = 0x01;
+ odyn->add_constant(elfcpp::DT_MIPS_RLD_VERSION, d_val);
+
+ // Dynamic flags
+ d_val = elfcpp::RHF_NOTPOT;
+ odyn->add_constant(elfcpp::DT_MIPS_FLAGS, d_val);
+
+ // This member holds the base address of the segment.
+ odyn->add_target_specific(elfcpp::DT_MIPS_BASE_ADDRESS);
+
+ // This member holds the number of entries in the .dynsym section.
+ odyn->add_target_specific(elfcpp::DT_MIPS_SYMTABNO);
+
+ // This member holds the index of the first dynamic symbol
+ // table entry that corresponds to an entry in the global offset table.
+ odyn->add_target_specific(elfcpp::DT_MIPS_GOTSYM);
+
+ // This member holds the number of local global offset table entries.
+ odyn->add_target_specific(elfcpp::DT_MIPS_LOCAL_GOTNO);
+
+ if (this->plt_ != NULL)
+ // DT_MIPS_PLTGOT dynamic tag
+ odyn->add_section_address(elfcpp::DT_MIPS_PLTGOT, this->got_plt_);
+ }
+
+ // Set the .text section.
+ this->text_section_ = layout->find_output_section(".text");
+ // Set the symbol table
+ this->symtab_ = symtab;
+ // Set the layout
+ this->layout_ = layout;
+
+ // 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->rel_dyn_section(layout));
+
+ if (this->copy_relocsa_.any_saved_relocs())
+ this->copy_relocsa_.emit(this->rela_dyn_section(layout));
+
+ Target::do_finalize_sections (layout, input_objects, symtab);
+ }
+
+// Functor class for processing the global symbol table. Processes the
+// index in dynamic section if the symbol has GOT entry, and finds
+// minimum index value.
+
+template<int size, bool big_endian>
+class Symbol_visitor_gotsym
+{
+ public:
+ Symbol_visitor_gotsym()
+ { }
+
+ void
+ operator()(const Sized_symbol<size>* sym)
+ {
+ if (sym->has_got_offset(0) && sym->needs_dynsym_entry() && sym->dynsym_index() < this->min_index_)
+ this->min_index_ = sym->dynsym_index();
+ }
+
+ unsigned int min_dynsym_index()
+ {
+ return this->min_index_;
+ }
+ private:
+ static unsigned int min_index_;
+};
+
+template<int size, bool big_endian>
+unsigned int Symbol_visitor_gotsym<size, big_endian>::min_index_ = -1U;
+
+template<int size, bool big_endian>
+void
+Target_mips<size, big_endian>::do_fix_sections(Layout*, Symbol_table*)
+{
+ Output_section *dynsym = this->layout_->find_output_section(".dynsym");
+
+ if ((dynsym != NULL) && (this->mips_stubs_ != NULL))
+ {
+ this->mips_stubs_->set_big_dyn_symtab(((unsigned int)dynsym->data_size()/16) > 0x10000);
+
+ this->mips_stubs_->fix_symbol_values();
+ }
+}
+
+// MIPS specific dynamic tags.
+template<int size, bool big_endian>
+unsigned int
+Target_mips<size, big_endian>::do_dynamic_tag_value(elfcpp::DT tag) const
+{
+ Symbol_table *symtab = this->symtab_;
+ Layout *layout = this->layout_;
+
+ Output_section *dynsym = layout->find_output_section(".dynsym");
+ gold_assert(dynsym != NULL);
+
+ switch (tag)
+ {
+ case elfcpp::DT_MIPS_BASE_ADDRESS:
+ {
+ typedef std::vector<Output_segment*> Segment_list;
+ const Segment_list segment_list_ = layout->segment_list();
+ unsigned int vaddr = -1U;
+ for (Segment_list::const_iterator p = segment_list_.begin();
+ p != segment_list_.end();
+ ++p)
+ {
+ if (((*p)->flags() & elfcpp::PF_R) != 0)
+ {
+ if ((*p)->vaddr() < vaddr)
+ vaddr = (*p)->vaddr();
+ }
+ }
+ return vaddr;
+ }
+ case elfcpp::DT_MIPS_SYMTABNO:
+ return (unsigned int)dynsym->data_size()/16;
+ case elfcpp::DT_MIPS_GOTSYM:
+ {
+ unsigned int min_index = symtab->global_got_index();
+
+ if (min_index == -1U)
+ min_index = (unsigned int)dynsym->data_size()/16;
+
+ return min_index;
+ }
+ case elfcpp::DT_MIPS_LOCAL_GOTNO:
+
+ return (unsigned int)this->got_->data_size()/4 -
+ ((unsigned int)dynsym->data_size()/16 - symtab->global_got_index()) -
+ this->got_->tls_entries();
+ default:
+ gold_error(_("Unknown dynamic tag 0x%x"), (unsigned int)tag);
+ }
+
+ return (unsigned int)-1;
+}
+
+// Relocate a section.
+
+template<int size, bool big_endian>
+void
+Target_mips<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_mips<size, big_endian> Mips;
+ typedef typename Target_mips<size, big_endian>::Relocate Mips_relocate;
+
+
+ if (sh_type == elfcpp::SHT_REL)
+ gold::relocate_section<size, big_endian, Mips, elfcpp::SHT_REL,
+ Mips_relocate>(
+ relinfo,
+ this,
+ prelocs,
+ reloc_count,
+ output_section,
+ needs_special_offset_handling,
+ view,
+ address,
+ view_size,
+ reloc_symbol_changes);
+ else if (sh_type == elfcpp::SHT_RELA)
+ gold::relocate_section<size, big_endian, Mips, elfcpp::SHT_RELA,
+ Mips_relocate>(
+ relinfo,
+ this,
+ prelocs,
+ reloc_count,
+ output_section,
+ needs_special_offset_handling,
+ view,
+ address,
+ view_size,
+ reloc_symbol_changes);
+}
+
+// Return the size of a relocation while scanning during a relocatable
+// link.
+
+template<int size, bool big_endian>
+unsigned int
+Target_mips<size, big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
+ unsigned int r_type,
+ Relobj* object)
+{
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_NONE:
+ case elfcpp::R_MIPS_UNUSED1:
+ case elfcpp::R_MIPS_UNUSED2:
+ case elfcpp::R_MIPS_UNUSED3:
+ case elfcpp::R_MIPS_INSERT_A:
+ case elfcpp::R_MIPS_INSERT_B:
+ case elfcpp::R_MIPS_DELETE:
+ case elfcpp::R_MIPS_TLS_DTPMOD64:
+ case elfcpp::R_MIPS_TLS_DTPREL64:
+ case elfcpp::R_MIPS_REL16:
+ case elfcpp::R_MIPS_ADD_IMMEDIATE:
+ case elfcpp::R_MIPS_PJUMP:
+ case elfcpp::R_MIPS_RELGOT:
+ case elfcpp::R_MIPS_TLS_TPREL64:
+ case elfcpp::R_MIPS_GNU_VTINHERIT:
+ case elfcpp::R_MIPS_GNU_VTENTRY:
+ return 0;
+
+ case elfcpp::R_MIPS_64:
+ case elfcpp::R_MIPS_SUB:
+ return 8;
+
+ case elfcpp::R_MIPS_32:
+ case elfcpp::R_MIPS_TLS_DTPMOD32:
+ case elfcpp::R_MIPS_TLS_DTPREL32:
+ case elfcpp::R_MIPS_TLS_TPREL32:
+ case elfcpp::R_MIPS_REL32:
+ case elfcpp::R_MIPS_PC32:
+ case elfcpp::R_MIPS_GPREL32:
+ case elfcpp::R_MIPS_JALR:
+ case elfcpp::R_MIPS_SCN_DISP:
+ return 4;
+
+ case elfcpp::R_MIPS_16:
+ case elfcpp::R_MIPS_HI16:
+ case elfcpp::R_MIPS_LO16:
+ case elfcpp::R_MIPS_HIGHER:
+ case elfcpp::R_MIPS_HIGHEST:
+ case elfcpp::R_MIPS_GPREL16:
+ case elfcpp::R_MIPS16_HI16:
+ case elfcpp::R_MIPS16_LO16:
+ case elfcpp::R_MIPS_PC16:
+ case elfcpp::R_MIPS_GNU_REL16_S2:
+ case elfcpp::R_MIPS_GOT16:
+ case elfcpp::R_MIPS16_GOT16:
+ case elfcpp::R_MIPS_CALL16:
+ case elfcpp::R_MIPS16_CALL16:
+ case elfcpp::R_MIPS_GOT_HI16:
+ case elfcpp::R_MIPS_CALL_HI16:
+ case elfcpp::R_MIPS_GOT_LO16:
+ case elfcpp::R_MIPS_CALL_LO16:
+ case elfcpp::R_MIPS_TLS_DTPREL_HI16:
+ case elfcpp::R_MIPS_TLS_DTPREL_LO16:
+ case elfcpp::R_MIPS_TLS_TPREL_HI16:
+ case elfcpp::R_MIPS_TLS_TPREL_LO16:
+ case elfcpp::R_MIPS16_GPREL:
+ case elfcpp::R_MIPS_GOT_DISP:
+ case elfcpp::R_MIPS_LITERAL:
+ case elfcpp::R_MIPS_GOT_PAGE:
+ case elfcpp::R_MIPS_GOT_OFST:
+ case elfcpp::R_MIPS_TLS_GD:
+ case elfcpp::R_MIPS_TLS_LDM:
+ case elfcpp::R_MIPS_TLS_GOTTPREL:
+ return 2;
+
+ // These relocations are not byte sized
+ case elfcpp::R_MIPS_26:
+ case elfcpp::R_MIPS16_26:
+ return 4;
+
+ // These relocations are not byte sized
+ case elfcpp::R_MIPS_SHIFT5:
+ case elfcpp::R_MIPS_SHIFT6:
+ return 1;
+
+ case elfcpp::R_MIPS_COPY:
+ case elfcpp::R_MIPS_GLOB_DAT:
+ case elfcpp::R_MIPS_JUMP_SLOT:
+ object->error(_("unexpected reloc %u in object file"), r_type);
+ return 0;
+
+ default:
+ object->error(_("unsupported reloc %u in object file"), r_type);
+ return 0;
+ }
+}
+
+// Scan the relocs during a relocatable link.
+
+template<int size, bool big_endian>
+void
+Target_mips<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_REL);
+
+ typedef Mips_scan_relocatable_relocs<big_endian, elfcpp::SHT_REL,
+ Relocatable_size_for_reloc> Scan_relocatable_relocs;
+
+ gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_REL,
+ Scan_relocatable_relocs>(
+ symtab,
+ layout,
+ object,
+ data_shndx,
+ prelocs,
+ reloc_count,
+ output_section,
+ needs_special_offset_handling,
+ local_symbol_count,
+ plocal_symbols,
+ rr);
+}
+
+// Relocate a section during a relocatable link.
+
+template<int size, bool big_endian>
+void
+Target_mips<size, big_endian>::relocate_for_relocatable(
+ const Relocate_info<size, big_endian>* relinfo,
+ unsigned int sh_type,
+ const unsigned char* prelocs,
+ size_t reloc_count,
+ Output_section* output_section,
+ off_t offset_in_output_section,
+ const Relocatable_relocs* rr,
+ unsigned char* view,
+ typename elfcpp::Elf_types<size>::Elf_Addr view_address,
+ section_size_type view_size,
+ unsigned char* reloc_view,
+ section_size_type reloc_view_size)
+{
+ gold_assert(sh_type == elfcpp::SHT_REL);
+
+ gold::relocate_for_relocatable<size, big_endian, elfcpp::SHT_REL>(
+ relinfo,
+ prelocs,
+ reloc_count,
+ output_section,
+ offset_in_output_section,
+ rr,
+ view,
+ view_address,
+ view_size,
+ reloc_view,
+ reloc_view_size);
+}
+
+// Perform target-specific processing in a relocatable link. This is
+// only used if we use the relocation strategy RELOC_SPECIAL.
+
+template<int size, bool big_endian>
+void
+Target_mips<size, big_endian>::relocate_special_relocatable(
+ const Relocate_info<size, big_endian>* relinfo,
+ unsigned int sh_type,
+ const unsigned char* preloc_in,
+ size_t relnum,
+ Output_section* output_section,
+ off_t offset_in_output_section,
+ unsigned char* view,
+ elfcpp::Elf_types<32>::Elf_Addr view_address,
+ section_size_type,
+ unsigned char* preloc_out)
+{
+ typedef typename Reloc_types<elfcpp::SHT_REL, size, big_endian>::Reloc Reltype;
+ typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc Relatype;
+
+ typedef typename Reloc_types<elfcpp::SHT_REL, size, big_endian>::Reloc_write
+ Reltype_write;
+ typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc_write
+ Relatype_write;
+
+ typedef typename elfcpp::Elf_types<32>::Elf_Addr Mips_address;
+ typedef Mips_relocate_functions<size, big_endian> Reloc_funcs;
+
+ const Mips_address invalid_address = static_cast<Mips_address>(0) - 1;
+
+ const Sized_relobj_file<size, big_endian>* object = relinfo->object;
+ const unsigned int local_count = object->local_symbol_count();
+
+ // SHT_REL types
+ Reltype reloc(preloc_in);
+ Reltype_write reloc_write(preloc_out);
+
+ // SHT_RELA types
+ Relatype reloca(preloc_in);
+ Relatype_write reloca_write(preloc_out);
+
+ elfcpp::Elf_types<32>::Elf_WXword r_info;
+
+ if (sh_type == elfcpp::SHT_RELA)
+ r_info = reloca.get_r_info();
+ else
+ r_info = reloc.get_r_info();
+
+ const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
+ const unsigned int r_type = elfcpp::elf_r_type<size>(r_info);
+
+ // Get the new symbol index.
+ // We only use RELOC_SPECIAL strategy in local relocations.
+ gold_assert(r_sym < local_count);
+
+ // We are adjusting a section symbol. We need to find
+ // the symbol table index of the section symbol for
+ // the output section corresponding to input section
+ // in which this symbol is defined.
+ bool is_ordinary;
+ unsigned int shndx = object->local_symbol_input_shndx(r_sym, &is_ordinary);
+ gold_assert(is_ordinary);
+ Output_section* os = object->output_section(shndx);
+ gold_assert(os != NULL);
+ gold_assert(os->needs_symtab_index());
+ unsigned int new_symndx = os->symtab_index();
+
+ // Get the new offset--the location in the output section where
+ // this relocation should be applied.
+
+ Mips_address offset;
+
+ if (sh_type == elfcpp::SHT_RELA)
+ offset = reloca.get_r_offset();
+ else
+ offset = reloc.get_r_offset();
+
+ Mips_address new_offset;
+ if (offset_in_output_section != invalid_address)
+ new_offset = offset + offset_in_output_section;
+ else
+ {
+ section_offset_type sot_offset =
+ convert_types<section_offset_type, Mips_address>(offset);
+ section_offset_type new_sot_offset =
+ output_section->output_offset(object, relinfo->data_shndx,
+ sot_offset);
+ gold_assert(new_sot_offset != -1);
+ new_offset = new_sot_offset;
+ }
+
+ // In an object file, r_offset is an offset within the section.
+ // In an executable or dynamic object, generated by
+ // --emit-relocs, r_offset is an absolute address.
+ if (!parameters->options().relocatable())
+ {
+ new_offset += view_address;
+ if (offset_in_output_section != invalid_address)
+ new_offset -= offset_in_output_section;
+ }
+
+ typename elfcpp::Elf_types<size>::Elf_Swxword r_addend;
+ if (sh_type == elfcpp::SHT_RELA)
+ r_addend = reloca.get_r_addend();
+ else
+ r_addend = 0;
+
+ if (sh_type == elfcpp::SHT_RELA)
+ {
+ reloca_write.put_r_offset(new_offset);
+ reloca_write.put_r_info(elfcpp::elf_r_info<32>(new_symndx, r_type));
+ reloca_write.put_r_addend(r_addend);
+ }
+ else
+ {
+ reloc_write.put_r_offset(new_offset);
+ reloc_write.put_r_info(elfcpp::elf_r_info<32>(new_symndx, r_type));
+ }
+
+ // Handle the reloc addend.
+ // The relocation uses a section symbol in the input file.
+ // We are adjusting it to use a section symbol in the output
+ // file. The input section symbol refers to some address in
+ // the input section. We need the relocation in the output
+ // file to refer to that same address. This adjustment to
+ // the addend is the same calculation we use for a simple
+ // absolute relocation for the input section symbol.
+
+ unsigned char* paddend = view + offset;
+ typename Reloc_funcs::Status reloc_status = Reloc_funcs::STATUS_OKAY;
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_26:
+ reloc_status = Reloc_funcs::rel26(paddend, object, object->local_symbol(r_sym),
+ offset_in_output_section, false,
+ r_addend, sh_type);
+
+ break;
+
+ default:
+ gold_unreachable();
+ }
+
+ // Report any errors.
+ switch (reloc_status)
+ {
+ case Reloc_funcs::STATUS_OKAY:
+ break;
+ case Reloc_funcs::STATUS_OVERFLOW:
+ gold_error_at_location(relinfo, relnum, new_offset,
+ _("relocation overflow"));
+ break;
+ case Reloc_funcs::STATUS_BAD_RELOC:
+ gold_error_at_location(
+ relinfo,
+ relnum,
+ new_offset ,
+ _("unexpected opcode while processing relocation"));
+ break;
+ default:
+ gold_unreachable();
+ }
+}
+
+// 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.
+
+template<int size, bool big_endian>
+tls::Tls_optimization
+Target_mips<size, big_endian>::optimize_tls_reloc(bool, int)
+{
+ // FIXME: Currently we do not do any TLS optimization.
+ return tls::TLSOPT_NONE;
+}
+
+// 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_mips<size, big_endian>::Scan::check_non_pic(Relobj* object,
+ unsigned int r_type)
+{
+ switch (r_type)
+ {
+ // These are the relocation types supported by glibc for MIPS.
+ case elfcpp::R_MIPS_TLS_DTPMOD32:
+ case elfcpp::R_MIPS_TLS_DTPREL32:
+ case elfcpp::R_MIPS_TLS_TPREL32:
+ case elfcpp::R_MIPS_REL32:
+ case elfcpp::R_MIPS_GLOB_DAT:
+ case elfcpp::R_MIPS_64:
+ return;
+
+ default:
+ {
+ // 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;
+ }
+
+ case elfcpp::R_MIPS_NONE:
+ gold_unreachable();
+ }
+}
+
+// Scan a relocation for a local symbol.
+
+template<int size, bool big_endian>
+inline void
+Target_mips<size, big_endian>::Scan::local(
+ Symbol_table* symtab,
+ Layout* layout,
+ Target_mips<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>* rela,
+ const elfcpp::Rel<size, big_endian>* rel,
+ unsigned int rel_type,
+ unsigned int r_type,
+ const elfcpp::Sym<size, big_endian>& lsym)
+{
+ typename elfcpp::Elf_types<size>::Elf_Addr r_offset;
+ typename elfcpp::Elf_types<size>::Elf_WXword r_info;
+ typename elfcpp::Elf_types<size>::Elf_Swxword r_addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ {
+ r_offset = rela->get_r_offset();
+ r_info = rela->get_r_info();
+ r_addend = rela->get_r_addend();
+ }
+ else
+ {
+ r_offset = rel->get_r_offset();
+ r_info = rel->get_r_info();
+ r_addend = 0;
+ }
+
+ switch (r_type)
+ {
+ // Global offset table relocations
+ case elfcpp::R_MIPS_CALL16:
+ case elfcpp::R_MIPS16_CALL16:
+ case elfcpp::R_MIPS_GOT16:
+ case elfcpp::R_MIPS16_GOT16:
+ {
+ Mips_output_data_got<size, big_endian>* got =
+ target->got_section(symtab, layout);
+
+ std::stringstream tmp;
+ tmp << static_cast<unsigned int> (r_info)
+ << static_cast<unsigned int> (reinterpret_cast<unsigned long long> (object))
+ << static_cast<unsigned int> (r_offset);
+ std::string key = tmp.str();
+
+ got->add_got16_view(key, got);
+ }
+ break;
+ case elfcpp::R_MIPS_GOT_DISP:
+ case elfcpp::R_MIPS_GOT_HI16:
+ case elfcpp::R_MIPS_CALL_HI16:
+ case elfcpp::R_MIPS_GOT_LO16:
+ case elfcpp::R_MIPS_CALL_LO16:
+ {
+ // The symbol requires a GOT entry.
+ Mips_output_data_got<size, big_endian>* got =
+ target->got_section(symtab, layout);
+
+ unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
+
+ got->add_local(object, r_sym, GOT_TYPE_STANDARD);
+ }
+ break;
+ case elfcpp::R_MIPS_GPREL32:
+ case elfcpp::R_MIPS_GPREL16:
+ case elfcpp::R_MIPS16_GPREL:
+ case elfcpp::R_MIPS_LITERAL:
+ break;
+ case elfcpp::R_MIPS_NONE:
+ case elfcpp::R_MIPS_16:
+ break;
+ case elfcpp::R_MIPS_32:
+ {
+ if (parameters->options().output_is_position_independent())
+ {
+ Reloc_section* rel_dyn = target->rel_dyn_section(layout);
+ unsigned int r_sym = elfcpp::elf_r_sym<32>(r_info);
+
+ rel_dyn->add_symbolless_local_addend(object, r_sym, elfcpp::R_MIPS_REL32,
+ output_section, data_shndx,
+ r_offset);
+ }
+ }
+ case elfcpp::R_MIPS_REL32:
+ case elfcpp::R_MIPS_26:
+ case elfcpp::R_MIPS_HI16:
+ case elfcpp::R_MIPS_LO16:
+ case elfcpp::R_MIPS_PC16:
+ case elfcpp::R_MIPS_UNUSED1:
+ case elfcpp::R_MIPS_UNUSED2:
+ case elfcpp::R_MIPS_UNUSED3:
+ case elfcpp::R_MIPS_SHIFT5:
+ case elfcpp::R_MIPS_SHIFT6:
+ case elfcpp::R_MIPS_64:
+ case elfcpp::R_MIPS_GOT_PAGE:
+ case elfcpp::R_MIPS_GOT_OFST:
+ case elfcpp::R_MIPS_SUB:
+ case elfcpp::R_MIPS_INSERT_A:
+ case elfcpp::R_MIPS_INSERT_B:
+ case elfcpp::R_MIPS_DELETE:
+ case elfcpp::R_MIPS_HIGHER:
+ case elfcpp::R_MIPS_HIGHEST:
+ case elfcpp::R_MIPS_SCN_DISP:
+ case elfcpp::R_MIPS_REL16:
+ case elfcpp::R_MIPS_ADD_IMMEDIATE:
+ case elfcpp::R_MIPS_PJUMP:
+ case elfcpp::R_MIPS_RELGOT:
+ case elfcpp::R_MIPS_JALR:
+ case elfcpp::R_MIPS_GLOB_DAT:
+ case elfcpp::R_MIPS16_26:
+ case elfcpp::R_MIPS16_HI16:
+ case elfcpp::R_MIPS16_LO16:
+ case elfcpp::R_MIPS_COPY:
+ case elfcpp::R_MIPS_JUMP_SLOT:
+ case elfcpp::R_MIPS_PC32:
+ case elfcpp::R_MIPS_GNU_REL16_S2:
+ case elfcpp::R_MIPS_GNU_VTINHERIT:
+ case elfcpp::R_MIPS_GNU_VTENTRY:
+ break;
+
+ case elfcpp::R_MIPS_TLS_DTPMOD32:
+ case elfcpp::R_MIPS_TLS_DTPREL32:
+ case elfcpp::R_MIPS_TLS_DTPMOD64:
+ case elfcpp::R_MIPS_TLS_DTPREL64:
+ case elfcpp::R_MIPS_TLS_GD:
+ case elfcpp::R_MIPS_TLS_LDM:
+ case elfcpp::R_MIPS_TLS_DTPREL_HI16:
+ case elfcpp::R_MIPS_TLS_DTPREL_LO16:
+ case elfcpp::R_MIPS_TLS_GOTTPREL:
+ case elfcpp::R_MIPS_TLS_TPREL32:
+ case elfcpp::R_MIPS_TLS_TPREL64:
+ case elfcpp::R_MIPS_TLS_TPREL_HI16:
+ case elfcpp::R_MIPS_TLS_TPREL_LO16:
+ {
+ unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
+ if (object->local_has_got_offset(r_sym, GOT_TYPE_TLS_OFFSET))
+ break;
+
+ bool output_is_shared = parameters->options().shared();
+ const tls::Tls_optimization optimized_type
+ = Target_mips<size, big_endian>::optimize_tls_reloc(
+ !output_is_shared, r_type);
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_TLS_GD:
+ if (optimized_type == tls::TLSOPT_NONE)
+ {
+ // Create a pair of GOT entries for the module index and
+ // dtv-relative offset.
+ Mips_output_data_got<size, big_endian>* got
+ = target->got_section(symtab, layout);
+ 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);
+ break;
+ }
+
+ got->add_tls_gd_local_reloc(GOT_TYPE_TLS_PAIR, object, r_sym);
+ }
+ else
+ // FIXME: TLS optimization not supported yet.
+ gold_unreachable();
+ break;
+
+ case elfcpp::R_MIPS_TLS_LDM:
+ if (optimized_type == tls::TLSOPT_NONE)
+ {
+ // Create a GOT entry for the module index.
+ target->got_mod_index_entry(symtab, layout, object);
+ }
+ else
+ // FIXME: TLS optimization not supported yet.
+ gold_unreachable();
+ break;
+ case elfcpp::R_MIPS_TLS_GOTTPREL:
+ layout->set_has_static_tls();
+ if (optimized_type == tls::TLSOPT_NONE)
+ {
+ // Create a GOT entry for the tp-relative offset.
+ Mips_output_data_got<size, big_endian>* got
+ = target->got_section(symtab, layout);
+ if (!parameters->doing_static_link())
+ got->add_local_with_rel(object, r_sym, GOT_TYPE_TLS_OFFSET,
+ target->rel_dyn_section(layout),
+ size == 32 ? elfcpp::R_MIPS_TLS_TPREL32 :
+ elfcpp::R_MIPS_TLS_TPREL64);
+ else if (!object->local_has_got_offset(r_sym,
+ GOT_TYPE_TLS_OFFSET))
+ {
+ got->add_local(object, r_sym, GOT_TYPE_TLS_OFFSET);
+
+ unsigned int got_offset =
+ object->local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET);
+ got->add_static_reloc(got_offset,
+ size == 32 ? elfcpp::R_MIPS_TLS_TPREL32 :
+ elfcpp::R_MIPS_TLS_TPREL64, object,
+ r_sym);
+ }
+ }
+ else
+ // FIXME: TLS optimization not supported yet.
+ gold_unreachable();
+ break;
+
+ default: // TODO AS: Check if this is correct at all
+ 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);
+ Reloc_section* rel_dyn = target->rel_dyn_section(layout);
+ rel_dyn->add_local(object, r_sym, size == 32 ?
+ elfcpp::R_MIPS_TLS_TPREL32 :
+ elfcpp::R_MIPS_TLS_TPREL64,
+ output_section, data_shndx, r_offset);
+ }
+ break;
+ }
+ }
+ break;
+
+ default:
+ unsupported_reloc_local(object, r_type);
+ break;
+ }
+}
+
+template<int size, bool big_endian>
+inline void
+Target_mips<size, big_endian>::Scan::local(
+ Symbol_table* symtab,
+ Layout* layout,
+ Target_mips<size, big_endian>* target,
+ Sized_relobj_file<size, big_endian>* object,
+ unsigned int data_shndx,
+ Output_section* output_section,
+ const elfcpp::Rel<size, big_endian>& reloc,
+ unsigned int r_type,
+ const elfcpp::Sym<size, big_endian>& lsym)
+{
+ local(
+ symtab,
+ layout,
+ target,
+ object,
+ data_shndx,
+ output_section,
+ (const elfcpp::Rela<size, big_endian>*) NULL,
+ &reloc,
+ elfcpp::SHT_REL,
+ r_type,
+ lsym);
+}
+
+
+template<int size, bool big_endian>
+inline void
+Target_mips<size, big_endian>::Scan::local(
+ Symbol_table* symtab,
+ Layout* layout,
+ Target_mips<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)
+{
+ local(
+ symtab,
+ layout,
+ target,
+ object,
+ data_shndx,
+ output_section,
+ &reloc,
+ (const elfcpp::Rel<size, big_endian>*) NULL,
+ elfcpp::SHT_RELA,
+ r_type,
+ lsym);
+}
+
+template<int size, bool big_endian>
+void
+Mips_output_data_got<size, big_endian>::do_write(Output_file* of)
+{
+ typedef typename elfcpp::Elf_types<size>::Elf_Addr Mips_address;
+
+ // Call parent to write out GOT.
+ Output_data_got<size, big_endian>::do_write(of);
+
+ // Collect views for later fixing values of .got section
+ if (!this->got16_views_.empty())
+ {
+ 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);
+
+ this->got_view_ = oview;
+ }
+
+ // We are done if there is no fix up.
+ if (this->static_relocs_.empty())
+ return;
+
+ 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);
+
+ Output_segment* tls_segment = this->layout_->tls_segment();
+ gold_assert(tls_segment != NULL);
+
+ for (size_t i = 0; i < this->static_relocs_.size(); ++i)
+ {
+ Static_reloc& reloc(this->static_relocs_[i]);
+
+ Mips_address value;
+ if (!reloc.symbol_is_global())
+ {
+ Sized_relobj_file<size, big_endian>* object = reloc.relobj();
+ const Symbol_value<size>* psymval =
+ reloc.relobj()->local_symbol(reloc.index());
+
+ // We are doing static linking. Issue an error and skip this
+ // relocation if the symbol is undefined or in a discarded_section.
+ bool is_ordinary;
+ unsigned int shndx = psymval->input_shndx(&is_ordinary);
+ if ((shndx == elfcpp::SHN_UNDEF)
+ || (is_ordinary
+ && shndx != elfcpp::SHN_UNDEF
+ && !object->is_section_included(shndx)
+ && !this->symbol_table_->is_section_folded(object, shndx)))
+ {
+ gold_error(_("undefined or discarded local symbol %u from "
+ " object %s in GOT"),
+ reloc.index(), reloc.relobj()->name().c_str());
+ continue;
+ }
+
+ value = psymval->value(object, 0);
+ }
+ else
+ {
+ const Symbol* gsym = reloc.symbol();
+ gold_assert(gsym != NULL);
+ if (gsym->is_forwarder())
+ gsym = this->symbol_table_->resolve_forwards(gsym);
+
+ // We are doing static linking. Issue an error and skip this
+ // relocation if the symbol is undefined or in a discarded_section
+ // unless it is a weakly_undefined symbol.
+ if ((gsym->is_defined_in_discarded_section()
+ || gsym->is_undefined())
+ && !gsym->is_weak_undefined())
+ {
+ gold_error(_("undefined or discarded symbol %s in GOT"),
+ gsym->name());
+ continue;
+ }
+
+ if (!gsym->is_weak_undefined())
+ {
+ const Sized_symbol<size>* sym =
+ static_cast<const Sized_symbol<size>*>(gsym);
+ value = sym->value();
+ }
+ else
+ value = 0;
+ }
+
+ unsigned got_offset = reloc.got_offset();
+ gold_assert(got_offset < oview_size);
+
+ typedef typename elfcpp::Swap<size, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(oview + got_offset);
+ Valtype x;
+
+ switch (reloc.r_type())
+ {
+ case elfcpp::R_MIPS_TLS_DTPMOD32:
+ x = value;
+ break;
+ case elfcpp::R_MIPS_TLS_TPREL32:
+ x = value - elfcpp::TP_OFFSET;
+ break;
+ case elfcpp::R_MIPS_TLS_DTPREL32:
+ x = value - elfcpp::DTP_OFFSET;
+ break;
+ default:
+ gold_unreachable();
+ break;
+ }
+
+ elfcpp::Swap<size, big_endian>::writeval(wv, x);
+ }
+
+ of->write_output_view(offset, oview_size, oview);
+}
+
+// Scan a relocation for a global symbol.
+
+template<int size, bool big_endian>
+inline void
+Target_mips<size, big_endian>::Scan::global(
+ Symbol_table* symtab,
+ Layout* layout,
+ Target_mips<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>* rela,
+ const elfcpp::Rel<size, big_endian>* rel,
+ unsigned int rel_type,
+ unsigned int r_type,
+ Symbol* gsym)
+{
+ typename elfcpp::Elf_types<size>::Elf_Addr r_offset;
+ typename elfcpp::Elf_types<size>::Elf_WXword r_info;
+ typename elfcpp::Elf_types<size>::Elf_Swxword r_addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ {
+ r_offset = rela->get_r_offset();
+ r_info = rela->get_r_info();
+ r_addend = rela->get_r_addend();
+ }
+ else
+ {
+ r_offset = rel->get_r_offset();
+ r_info = rel->get_r_info();
+ r_addend = 0;
+ }
+
+ // 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);
+
+ // TODO AS: Check where to put this code!!!!!
+ if (!parameters->options().shared())
+ if ((this->symbol_needs_plt_entry(gsym)) && (!gsym->has_plt_offset()))
+ {
+ if (gsym->object() != object)
+ {
+ if (parameters->options().output_is_position_independent())
+ {
+ gold_assert(!gsym->has_dynsym_index());
+ target->make_mips_stubs_entry(symtab, layout, gsym);
+ }
+ else if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
+ {
+ 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()) ||
+ ((this->get_reference_flags(r_type) == Symbol::ABSOLUTE_REF)
+ && !(parameters->options().output_is_position_independent())))
+ && (gsym->has_plt_offset()))
+ {
+ gsym->set_needs_dynsym_value();
+ gsym->set_nonvis(elfcpp::STO_MIPS_PLT>>2);
+ }
+ }
+
+ if ((gsym->has_plt_offset())
+ && (parameters->options().output_is_position_independent()))
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_HI16:
+ case elfcpp::R_MIPS_LO16:
+ case elfcpp::R_MIPS_CALL16:
+ case elfcpp::R_MIPS_JALR:
+ break;
+ default:
+ target->remove_stub_entry(gsym);
+ break;
+ }
+
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_NONE:
+ case elfcpp::R_MIPS_UNUSED1:
+ case elfcpp::R_MIPS_UNUSED2:
+ case elfcpp::R_MIPS_UNUSED3:
+ case elfcpp::R_MIPS_INSERT_A:
+ case elfcpp::R_MIPS_INSERT_B:
+ case elfcpp::R_MIPS_DELETE:
+ case elfcpp::R_MIPS_TLS_DTPMOD64:
+ case elfcpp::R_MIPS_TLS_DTPREL64:
+ case elfcpp::R_MIPS_REL16:
+ case elfcpp::R_MIPS_ADD_IMMEDIATE:
+ case elfcpp::R_MIPS_PJUMP:
+ case elfcpp::R_MIPS_RELGOT:
+ case elfcpp::R_MIPS_TLS_TPREL64:
+ case elfcpp::R_MIPS_GNU_VTINHERIT:
+ case elfcpp::R_MIPS_GNU_VTENTRY:
+ break;
+ case elfcpp::R_MIPS_GOT16:
+ case elfcpp::R_MIPS16_GOT16:
+ case elfcpp::R_MIPS_CALL16:
+ case elfcpp::R_MIPS16_CALL16:
+ case elfcpp::R_MIPS_GOT_DISP:
+ case elfcpp::R_MIPS_GOT_HI16:
+ case elfcpp::R_MIPS_CALL_HI16:
+ case elfcpp::R_MIPS_GOT_LO16:
+ case elfcpp::R_MIPS_CALL_LO16:
+ case elfcpp::R_MIPS_GOT_PAGE:
+ case elfcpp::R_MIPS_GOT_OFST:
+ {
+ // The symbol requires a GOT entry.
+ Mips_output_data_got<size, big_endian>* got =
+ target->got_section(symtab, layout);
+ if (!gsym->final_value_is_known()
+ || (parameters->options().output_is_position_independent()))
+ got->add_global_with_reloc_mips(gsym);
+ else
+ {
+ got->add_global(gsym, GOT_TYPE_STANDARD);
+ gsym->set_needs_dynsym_entry();
+ }
+
+ }
+ break;
+ case elfcpp::R_MIPS_LITERAL:
+ gold_error(_("%s:R_MIPS_LITERAL is defined only for local symbols"),
+ object->name().c_str());
+ break;
+ case elfcpp::R_MIPS_GPREL32:
+ gold_error(_("%s:R_MIPS_GPREL32 not defined for global symbols"),
+ object->name().c_str());
+ case elfcpp::R_MIPS_GPREL16:
+ case elfcpp::R_MIPS16_GPREL:
+ case elfcpp::R_MIPS16_26:
+ break;
+ case elfcpp::R_MIPS_26:
+ case elfcpp::R_MIPS_PC16:
+ {
+ const unsigned char* pehdr = gsym->object()->get_view(
+ elfcpp::file_header_offset,
+ elfcpp::Elf_sizes<size>::ehdr_size,
+ true, false);
+
+ elfcpp::Ehdr<size, big_endian> ehdr(pehdr);
+
+ if (((ehdr.get_e_flags() & elfcpp::EF_MIPS_PIC) != 0)
+ && (gsym->is_defined_in_discarded_section() == false)
+ && (gsym->is_func())
+ && (!gsym->has_plt_offset())
+ && (gsym->object() != object))
+ {
+ bool is_ordinary = false;
+
+ target->make_stub_entry(layout);
+ target->set_stub_flag();
+
+ // If the function is at the beginning of the section and if we
+ // would need no more than 2 nops.
+ // TODO AS: For now we only support stubs of second type
+ if ((((Sized_symbol<size> *)gsym)->value() == 0)
+ &&(gsym->object()->section_addralign(gsym->shndx(&is_ordinary))
+ <= 16))
+ {
+ if (target->stub_symbol(gsym->name()) == NULL)
+ target->stub_->add_entry(symtab, target, gsym);
+ }
+ else
+ {
+ if (target->stub_symbol(gsym->name()) == NULL)
+ target->stub_->add_entry(symtab, target, gsym);
+ }
+ }
+ break;
+ }
+ case elfcpp::R_MIPS_16:
+ case elfcpp::R_MIPS_SHIFT5:
+ case elfcpp::R_MIPS_SHIFT6:
+ case elfcpp::R_MIPS_SUB:
+ case elfcpp::R_MIPS_HIGHER:
+ case elfcpp::R_MIPS_HIGHEST:
+ case elfcpp::R_MIPS_SCN_DISP:
+ case elfcpp::R_MIPS16_HI16:
+ case elfcpp::R_MIPS16_LO16:
+ case elfcpp::R_MIPS_GNU_REL16_S2:
+ case elfcpp::R_MIPS_PC32:
+ break;
+ case elfcpp::R_MIPS_HI16:
+ case elfcpp::R_MIPS_LO16:
+ case elfcpp::R_MIPS_32:
+ case elfcpp::R_MIPS_64:
+ // Absolute addressing relocations.
+ {
+ // Make a dynamic relocation if necessary.
+ if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
+ {
+ if (gsym->may_need_copy_reloc() && gsym->in_dyn()
+ && !((r_type == elfcpp::R_MIPS_32) || (r_type == elfcpp::R_MIPS_64)))
+ {
+ if (rel_type == elfcpp::SHT_RELA)
+ target->copy_reloc(symtab, layout, object,
+ data_shndx, output_section, gsym, *rela);
+ else
+ target->copy_reloc(symtab, layout, object,
+ data_shndx, output_section, gsym, *rel);
+ }
+ else if ((r_type == elfcpp::R_MIPS_32) || (r_type == elfcpp::R_MIPS_64))
+ {
+ Reloc_section* rel_dyn = target->rel_dyn_section(layout);
+ Mips_output_data_got<size, big_endian>*
+ got = target->got_section(symtab, layout);
+
+ if (!gsym->final_value_is_known()
+ || (parameters->options().output_is_position_independent()))
+ got->add_global_with_reloc_mips(gsym);
+
+ rel_dyn->add_global(gsym, elfcpp::R_MIPS_REL32, output_section, object,
+ data_shndx, r_offset);
+ }
+ }
+ }
+ break;
+ case elfcpp::R_MIPS_TLS_DTPREL32:
+ case elfcpp::R_MIPS_TLS_GD:
+ case elfcpp::R_MIPS_TLS_LDM:
+ case elfcpp::R_MIPS_TLS_DTPREL_HI16:
+ case elfcpp::R_MIPS_TLS_DTPREL_LO16:
+ case elfcpp::R_MIPS_TLS_GOTTPREL:
+ case elfcpp::R_MIPS_TLS_TPREL32:
+ case elfcpp::R_MIPS_TLS_TPREL_HI16:
+ case elfcpp::R_MIPS_TLS_TPREL_LO16:
+ {
+ if (gsym->has_got_offset(GOT_TYPE_TLS_OFFSET))
+ break;
+
+ const bool is_final = gsym->final_value_is_known();
+ const tls::Tls_optimization optimized_type =
+ Target_mips<size, big_endian>::optimize_tls_reloc(is_final, r_type);
+ //unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info());
+
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_TLS_GD:
+ if (optimized_type == tls::TLSOPT_NONE)
+ {
+ // Create a pair of GOT entries for the module index and
+ // dtv-relative offset.
+ Mips_output_data_got<size, big_endian>* got
+ = target->got_section(symtab, layout);
+ if (!parameters->doing_static_link())
+ got->add_global_pair_with_rel(gsym, GOT_TYPE_TLS_PAIR,
+ target->rel_dyn_section(layout),
+ size == 32 ? elfcpp::R_MIPS_TLS_DTPMOD32 :
+ elfcpp::R_MIPS_TLS_DTPMOD64,
+ size == 32 ? elfcpp::R_MIPS_TLS_DTPREL32 :
+ elfcpp::R_MIPS_TLS_DTPREL64);
+ else
+ got->add_tls_gd_with_static_reloc(GOT_TYPE_TLS_PAIR, gsym);
+ }
+ else
+ // FIXME: TLS optimization not supported yet.
+ gold_unreachable();
+ break;
+
+ case elfcpp::R_MIPS_TLS_LDM:
+ if (optimized_type == tls::TLSOPT_NONE)
+ // Create a GOT entry for the module index.
+ target->got_mod_index_entry(symtab, layout, object);
+ else
+ // FIXME: TLS optimization not supported yet.
+ gold_unreachable();
+ break;
+ case elfcpp::R_MIPS_TLS_GOTTPREL:
+ layout->set_has_static_tls();
+ if (optimized_type == tls::TLSOPT_NONE)
+ {
+ // Create a GOT entry for the tp-relative offset.
+ Mips_output_data_got<size, big_endian>* got
+ = target->got_section(symtab, layout);
+ if (!parameters->doing_static_link())
+ got->add_global_tls_with_reloc_mips(gsym, target->rel_dyn_section(layout),
+ elfcpp::R_MIPS_TLS_TPREL32);
+ else if (!gsym->has_got_offset(GOT_TYPE_TLS_OFFSET))
+ {
+ got->add_global(gsym, GOT_TYPE_TLS_OFFSET);
+ unsigned int got_offset =
+ gsym->got_offset(GOT_TYPE_TLS_OFFSET);
+ got->add_static_reloc(got_offset,
+ size == 32 ? elfcpp::R_MIPS_TLS_TPREL32 :
+ elfcpp::R_MIPS_TLS_TPREL64, gsym);
+ }
+ }
+ else
+ // FIXME: TLS optimization not supported yet.
+ gold_unreachable();
+ break;
+
+ default:
+ layout->set_has_static_tls();
+ if (parameters->options().shared())
+ {
+ // We need to create a dynamic relocation.
+ Reloc_section* rel_dyn = target->rel_dyn_section(layout);
+ rel_dyn->add_global(gsym,
+ size == 32 ? elfcpp::R_MIPS_TLS_TPREL32 :
+ elfcpp::R_MIPS_TLS_TPREL64,
+ output_section, object,
+ data_shndx, r_offset);
+ }
+ break;
+ }
+ }
+ break;
+ case elfcpp::R_MIPS_REL32:
+ // Relative addressing relocations.
+ {
+ // Make a dynamic relocation if necessary.
+ if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type)))
+ {
+ if (gsym->may_need_copy_reloc())
+ {
+ if (rel_type == elfcpp::SHT_RELA)
+ target->copy_reloc(symtab, layout, object,
+ data_shndx, output_section, gsym, *rela);
+ else
+ target->copy_reloc(symtab, layout, object,
+ data_shndx, output_section, gsym, *rel);
+ }
+ else
+ {
+ check_non_pic(object, r_type);
+ Reloc_section* rel_dyn = target->rel_dyn_section(layout);
+ rel_dyn->add_global(gsym, r_type, output_section, object,
+ data_shndx, r_offset);
+ }
+ }
+ }
+ break;
+ case elfcpp::R_MIPS_JALR:
+ break;
+ case elfcpp::R_MIPS_COPY:
+ case elfcpp::R_MIPS_GLOB_DAT:
+ case elfcpp::R_MIPS_JUMP_SLOT:
+ // These are relocations which should only be seen by the
+ // dynamic linker, and should never be seen here.
+ 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;
+ }
+}
+
+template<int size, bool big_endian>
+inline void
+Target_mips<size, big_endian>::Scan::global(
+ Symbol_table* symtab,
+ Layout* layout,
+ Target_mips<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)
+{
+ global(
+ symtab,
+ layout,
+ target,
+ object,
+ data_shndx,
+ output_section,
+ &reloc,
+ (const elfcpp::Rel<size, big_endian>*) NULL,
+ elfcpp::SHT_RELA,
+ r_type,
+ gsym);
+}
+
+template<int size, bool big_endian>
+inline void
+Target_mips<size, big_endian>::Scan::global(
+ Symbol_table* symtab,
+ Layout* layout,
+ Target_mips<size, big_endian>* target,
+ Sized_relobj_file<size, big_endian>* object,
+ unsigned int data_shndx,
+ Output_section* output_section,
+ const elfcpp::Rel<size, big_endian>& reloc,
+ unsigned int r_type,
+ Symbol* gsym)
+{
+ global(
+ symtab,
+ layout,
+ target,
+ object,
+ data_shndx,
+ output_section,
+ (const elfcpp::Rela<size, big_endian>*) NULL,
+ &reloc,
+ elfcpp::SHT_REL,
+ r_type,
+ gsym);
+}
+
+// Perform a relocation.
+
+template<int size, bool big_endian>
+inline bool
+Target_mips<size, big_endian>::Relocate::relocate(
+ const Relocate_info<size, big_endian>* relinfo,
+ Target_mips* target,
+ Output_section* output_section,
+ size_t relnum,
+ const elfcpp::Rela<size, big_endian>* rela,
+ const elfcpp::Rel<size, big_endian>* rel,
+ unsigned int rel_type,
+ 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)
+{
+ typename elfcpp::Elf_types<size>::Elf_Addr r_offset;
+ typename elfcpp::Elf_types<size>::Elf_WXword r_info;
+ typename elfcpp::Elf_types<size>::Elf_Swxword r_addend;
+
+ if (rel_type == elfcpp::SHT_RELA)
+ {
+ r_offset = rela->get_r_offset();
+ r_info = rela->get_r_info();
+ r_addend = rela->get_r_addend();
+ }
+ else
+ {
+ r_offset = rel->get_r_offset();
+ r_info = rel->get_r_info();
+ r_addend = 0;
+ }
+
+ typedef Mips_relocate_functions<size, big_endian> Reloc_funcs;
+ typename Reloc_funcs::Status reloc_status = Reloc_funcs::STATUS_OKAY;
+
+ unsigned int got_offset = 0;
+ const Sized_relobj_file<size, big_endian>* object = relinfo->object;
+
+ Symbol_value<size> symval;
+
+ // __gnu_local_gp is _gp symbol, just swich it
+ if (gsym && (strcmp(gsym->name(), "__gnu_local_gp") == 0))
+ {
+ gsym = target->gp();
+
+ gold_assert(gsym != NULL);
+
+ symval.set_output_value(target->gp_address());
+
+ psymval = &symval;
+ }
+ else if (gsym && (strcmp(gsym->name(), "_gp_disp") == 0))
+ {
+ if (r_type != elfcpp::R_MIPS_HI16 && r_type != elfcpp::R_MIPS16_HI16 &&
+ r_type != elfcpp::R_MIPS_LO16 && r_type != elfcpp::R_MIPS16_LO16)
+ gold_error_at_location(relinfo, relnum, r_offset,
+ _("relocations against _gp_disp are permitted only"
+ " with R_MIPS_HI16 and R_MIPS_LO16 relocations."));
+
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Valtype addend = (elfcpp::Swap<32, big_endian>::readval(wv)) & 0xffffU;
+ Valtype value;
+
+ if (r_type == elfcpp::R_MIPS16_HI16)
+ value = addend + target->gp_address() - address - 4;
+ else if (r_type == elfcpp::R_MIPS_HI16)
+ value = addend + target->gp_address() - address;
+ else if (r_type == elfcpp::R_MIPS16_LO16)
+ value = addend + target->gp_address() - address;
+ else if (r_type == elfcpp::R_MIPS_LO16)
+ value = addend + target->gp_address() - address + 4;
+ else
+ gold_unreachable();
+
+ symval.set_output_value(value);
+
+ psymval = &symval;
+ }
+
+ // Get the GOT offset.
+ // The GOT pointer points to the end of the GOT section.
+ // We need to subtract the size of the GOT section to get
+ // the actual offset to use in the relocation.
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_GOT_DISP:
+ case elfcpp::R_MIPS_GOT_HI16:
+ case elfcpp::R_MIPS_CALL_HI16:
+ case elfcpp::R_MIPS_GOT_LO16:
+ case elfcpp::R_MIPS_CALL_LO16:
+ if (gsym != NULL)
+ {
+ gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD));
+ got_offset = (gsym->got_offset(GOT_TYPE_STANDARD)
+ - target->got_size());
+ }
+ else
+ {
+ unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
+ gold_assert(relinfo->object->local_has_got_offset
+ (r_sym, GOT_TYPE_STANDARD));
+ got_offset = (relinfo->object->local_got_offset
+ (r_sym, GOT_TYPE_STANDARD) - target->got_size());
+ }
+ break;
+ case elfcpp::R_MIPS_TLS_GD:
+ if (gsym != NULL)
+ {
+ got_offset = target->got_section()->address() +
+ gsym->got_offset(GOT_TYPE_TLS_PAIR) -
+ target->gp_address();
+ }
+ else
+ {
+ unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
+ gold_assert(relinfo->object->local_has_got_offset
+ (r_sym, GOT_TYPE_TLS_PAIR));
+ got_offset = target->got_section()->address() +
+ relinfo->object->local_got_offset(r_sym, GOT_TYPE_TLS_PAIR) -
+ target->gp_address();
+ }
+ break;
+ case elfcpp::R_MIPS_TLS_GOTTPREL:
+ if (gsym != NULL)
+ {
+ got_offset = target->got_section()->address() +
+ gsym->got_offset(GOT_TYPE_TLS_OFFSET) -
+ target->gp_address();
+ }
+ else
+ {
+ unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info);
+ gold_assert(relinfo->object->local_has_got_offset
+ (r_sym, GOT_TYPE_TLS_OFFSET));
+ got_offset = target->got_section()->address() +
+ relinfo->object->local_got_offset(r_sym, GOT_TYPE_TLS_OFFSET) -
+ target->gp_address();
+ }
+ break;
+ case elfcpp::R_MIPS_TLS_LDM:
+ // Relocate the field with the offset of the GOT entry for
+ // the module index.
+ got_offset = target->got_section()->address() +
+ (target->got_mod_index_entry(NULL, NULL, NULL)) -
+ target->gp_address();
+ break;
+ case elfcpp::R_MIPS_GOT_OFST:
+ if ((gsym != NULL) && (!gsym->is_forced_local()))
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Reltype addend = elfcpp::Swap<32, big_endian>::readval(wv);
+ addend &= 0x0000ffffU;
+
+ got_offset = addend;
+ break;
+ }
+ case elfcpp::R_MIPS_GOT_PAGE:
+ {
+ typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<16, big_endian>::Valtype Reltype;
+ Valtype* wv = reinterpret_cast<Valtype*>(view);
+ Reltype addend = elfcpp::Swap<32, big_endian>::readval(wv);
+ addend &= 0x0000ffffU;
+ got_offset = target->got_section()->add_constant(psymval->value(object,
+ addend) + 0x00008000U) & ~0x0000ffffU;
+ }
+ break;
+ default:
+ break;
+ }
+
+ // Pick the value to use for symbols defined in shared objects.
+ if (gsym != NULL
+ && gsym->use_plt_offset(Scan::get_reference_flags(r_type)))
+ {
+ elfcpp::Elf_Xword value;
+
+ // To avoid problems with symbols that are no longer in .MIPS.stubs
+ if (gsym->plt_offset() > 0)
+ {
+ if (target->is_plt_symbol((Sized_symbol<size> *)gsym))
+ value = target->plt_section()->address() + gsym->plt_offset();
+ else
+ value = target->mips_stubs()->address() +
+ gsym->plt_offset() * (target->mips_stubs()->big_dyn_symtab() ? 20 : 16);
+
+ symval.set_output_value(value);
+
+ psymval = &symval;
+ }
+ }
+
+ // Set symbol for use with stub
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_26:
+ case elfcpp::R_MIPS_PC16:
+ case elfcpp::R_MIPS16_26:
+ {
+ if (target->stub_flag())
+ {
+ if (gsym == NULL)
+ break;
+
+ Sized_symbol<size> * sym = static_cast<Sized_symbol<size>*>
+ (target->stub_symbol(gsym->name()));
+ if (sym != NULL)
+ {
+ symval.set_output_value(sym->value());
+ psymval = &symval;
+ }
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_NONE:
+ case elfcpp::R_MIPS_GNU_VTINHERIT:
+ case elfcpp::R_MIPS_GNU_VTENTRY:
+ break;
+ case elfcpp::R_MIPS_16:
+ reloc_status = Reloc_funcs::rel16(view, object, psymval, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_32:
+ if ((gsym != NULL)
+ && ((parameters->options().shared())
+ || (parameters->options().pie())))
+ break;
+
+ reloc_status = Reloc_funcs::rel32(view, object, psymval, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_REL32:
+ if (parameters->options().shared() && (gsym != NULL))
+ break;
+ case elfcpp::R_MIPS_PC32:
+ reloc_status = Reloc_funcs::relrel32(view, object, psymval, address, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_26:
+ // TODO AS: Check if this is correct.
+ if (gsym != NULL)
+ reloc_status = Reloc_funcs::rel26(view, object, psymval, address,
+ gsym->is_forced_local(), r_addend, rel_type);
+ else
+ reloc_status = Reloc_funcs::rel26(view, object, psymval, address,
+ false, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_HI16:
+ case elfcpp::R_MIPS16_HI16:
+ reloc_status = Reloc_funcs::relhi16(view, psymval->value(object, 0), r_addend);
+ break;
+ case elfcpp::R_MIPS_LO16:
+ case elfcpp::R_MIPS16_LO16:
+ reloc_status = Reloc_funcs::rello16(view, object, psymval, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_GPREL16:
+ case elfcpp::R_MIPS16_GPREL:
+ case elfcpp::R_MIPS_LITERAL:
+ reloc_status = Reloc_funcs::relgprel(view, object, psymval,
+ target->gp_address(), r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_GOT16:
+ case elfcpp::R_MIPS_CALL16:
+ case elfcpp::R_MIPS16_GOT16:
+ case elfcpp::R_MIPS16_CALL16:
+ {
+ typedef typename elfcpp::Swap<size, big_endian>::Valtype Valtype;
+ Mips_output_data_got<size, big_endian>* got = target->got_section();
+ Valtype got_offset;
+
+ if (gsym == NULL)
+ {
+ std::stringstream tmp;
+ tmp << static_cast<unsigned int> (r_info)
+ << static_cast<unsigned int> (reinterpret_cast<unsigned long long> (object))
+ << static_cast<unsigned int> (r_offset);
+ std::string key = tmp.str();
+
+ got_offset = got->got16_offset(key);
+ }
+ else
+ got_offset = gsym->got_offset(GOT_TYPE_STANDARD);
+
+ unsigned char* got_view = got_offset +
+ (unsigned char* const)got->got_view();
+
+ reloc_status = Reloc_funcs::relgot16(view, object, psymval,
+ target->gp_address(), got_view,
+ got->address(), got_offset,
+ gsym, r_addend, rel_type);
+ }
+ break;
+ case elfcpp::R_MIPS_PC16:
+ case elfcpp::R_MIPS_GNU_REL16_S2:
+ reloc_status = Reloc_funcs::relpc16(view, object, psymval, address,
+ r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_GPREL32:
+ reloc_status = Reloc_funcs::relgprel32(view, object, psymval,
+ target->gp_address(), r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_UNUSED1:
+ case elfcpp::R_MIPS_UNUSED2:
+ case elfcpp::R_MIPS_UNUSED3:
+ break;
+ case elfcpp::R_MIPS_SHIFT5:
+ reloc_status = Reloc_funcs::relsh5(view, object, psymval, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_SHIFT6:
+ reloc_status = Reloc_funcs::relsh6(view, object, psymval, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_64:
+ if (parameters->options().shared() && (gsym != NULL))
+ break;
+
+ reloc_status = Reloc_funcs::rel64(view, object, psymval, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_GOT_HI16:
+ case elfcpp::R_MIPS_CALL_HI16:
+ got_offset = ((got_offset + 0x8000) >> 16);
+ case elfcpp::R_MIPS_GOT_LO16:
+ case elfcpp::R_MIPS_CALL_LO16:
+ case elfcpp::R_MIPS_GOT_OFST:
+ case elfcpp::R_MIPS_GOT_PAGE:
+ case elfcpp::R_MIPS_GOT_DISP:
+ case elfcpp::R_MIPS_TLS_GOTTPREL:
+ case elfcpp::R_MIPS_TLS_GD:
+ case elfcpp::R_MIPS_TLS_LDM:
+ reloc_status = Reloc_funcs::relgotofst(view, got_offset);
+ break;
+ case elfcpp::R_MIPS_SUB:
+ reloc_status = Reloc_funcs::relsub(view, object, psymval, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_INSERT_A:
+ case elfcpp::R_MIPS_INSERT_B:
+ case elfcpp::R_MIPS_DELETE:
+ break;
+ case elfcpp::R_MIPS_HIGHER:
+ reloc_status = Reloc_funcs::relhigher(view, object, psymval, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_HIGHEST:
+ reloc_status = Reloc_funcs::relhighest(view, object, psymval, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_SCN_DISP:
+ reloc_status = Reloc_funcs::relscndisp(view, object, psymval,
+ output_section->offset(), r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_REL16:
+ case elfcpp::R_MIPS_ADD_IMMEDIATE:
+ case elfcpp::R_MIPS_PJUMP:
+ case elfcpp::R_MIPS_RELGOT:
+ break;
+ case elfcpp::R_MIPS_JALR:
+ if ((gsym != NULL) && !(gsym->final_value_is_known()))
+ break;
+
+ reloc_status = Reloc_funcs::reljalr(view, object, psymval, address);
+ break;
+ case elfcpp::R_MIPS_TLS_DTPREL32:
+ reloc_status = Reloc_funcs::tlsrel32(view, object, psymval,
+ elfcpp::DTP_OFFSET, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_TLS_DTPREL_LO16:
+ reloc_status = Reloc_funcs::tlsrello16(view, object, psymval,
+ elfcpp::DTP_OFFSET, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_TLS_DTPREL_HI16:
+ reloc_status = Reloc_funcs::tlsrelhi16(view, object, psymval,
+ elfcpp::DTP_OFFSET, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_TLS_TPREL32:
+ reloc_status = Reloc_funcs::tlsrel32(view, object, psymval,
+ elfcpp::TP_OFFSET, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_TLS_TPREL_LO16:
+ reloc_status = Reloc_funcs::tlsrello16(view, object, psymval,
+ elfcpp::TP_OFFSET, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_TLS_TPREL_HI16:
+ reloc_status = Reloc_funcs::tlsrelhi16(view, object, psymval,
+ elfcpp::TP_OFFSET, r_addend, rel_type);
+ break;
+ case elfcpp::R_MIPS_TLS_DTPMOD64:
+ case elfcpp::R_MIPS_TLS_DTPREL64:
+ case elfcpp::R_MIPS_TLS_TPREL64:
+ case elfcpp::R_MIPS_TLS_DTPMOD32: // TODO AS! For now this reloc do nothing.
+ break;
+ case elfcpp::R_MIPS_GLOB_DAT:
+ reloc_status = Reloc_funcs::relglob(view, object, psymval);
+ break;
+ default:
+ gold_error_at_location(relinfo, relnum, r_offset,
+ _("unsupported reloc %u"), r_type);
+ break;
+ }
+
+ // Report any errors.
+ switch (reloc_status)
+ {
+ case Reloc_funcs::STATUS_OKAY:
+ break;
+ case Reloc_funcs::STATUS_OVERFLOW:
+ gold_error_at_location(relinfo, relnum, r_offset,
+ _("relocation overflow"));
+ break;
+ case Reloc_funcs::STATUS_BAD_RELOC:
+ gold_error_at_location(
+ relinfo,
+ relnum,
+ r_offset,
+ _("unexpected opcode while processing relocation"));
+ break;
+ default:
+ gold_unreachable();
+ }
+
+ return true;
+}
+
+template<int size, bool big_endian>
+inline bool
+Target_mips<size, big_endian>::Relocate::relocate(
+ const Relocate_info<size, big_endian>* relinfo,
+ Target_mips* target,
+ Output_section* output_section,
+ size_t relnum,
+ const elfcpp::Rela<size, big_endian>& reloc,
+ 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)
+{
+ return relocate(
+ relinfo,
+ target,
+ output_section,
+ relnum,
+ &reloc,
+ (const elfcpp::Rel<size, big_endian>*) NULL,
+ elfcpp::SHT_RELA,
+ r_type,
+ gsym,
+ psymval,
+ view,
+ address,
+ view_size);
+}
+
+template<int size, bool big_endian>
+inline bool
+Target_mips<size, big_endian>::Relocate::relocate(
+ const Relocate_info<size, big_endian>* relinfo,
+ Target_mips* target,
+ Output_section* output_section,
+ size_t relnum,
+ const elfcpp::Rel<size, big_endian>& reloc,
+ 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)
+{
+ return relocate(
+ relinfo,
+ target,
+ output_section,
+ relnum,
+ (const elfcpp::Rela<size, big_endian>*) NULL,
+ &reloc,
+ elfcpp::SHT_REL,
+ r_type,
+ gsym,
+ psymval,
+ view,
+ address,
+ view_size);
+}
+
+// Get the Reference_flags for a particular relocation.
+
+template<int size, bool big_endian>
+int
+Target_mips<size, big_endian>::Scan::get_reference_flags(
+ unsigned int r_type)
+{
+ switch (r_type)
+ {
+ case elfcpp::R_MIPS_NONE:
+ case elfcpp::R_MIPS_GNU_VTINHERIT:
+ case elfcpp::R_MIPS_GNU_VTENTRY:
+ case elfcpp::R_MIPS_INSERT_A:
+ case elfcpp::R_MIPS_INSERT_B:
+ case elfcpp::R_MIPS_DELETE:
+ case elfcpp::R_MIPS_PJUMP:
+ case elfcpp::R_MIPS_RELGOT:
+ case elfcpp::R_MIPS_REL16:
+ case elfcpp::R_MIPS_ADD_IMMEDIATE:
+ // No symbol reference.
+ return 0;
+
+ case elfcpp::R_MIPS_16:
+ case elfcpp::R_MIPS_32:
+ case elfcpp::R_MIPS_64:
+ case elfcpp::R_MIPS_HI16:
+ case elfcpp::R_MIPS_LO16:
+ case elfcpp::R_MIPS_SHIFT5:
+ case elfcpp::R_MIPS_SHIFT6:
+ case elfcpp::R_MIPS_SUB:
+ case elfcpp::R_MIPS_HIGHER:
+ case elfcpp::R_MIPS_HIGHEST:
+ case elfcpp::R_MIPS_SCN_DISP:
+ case elfcpp::R_MIPS16_HI16:
+ case elfcpp::R_MIPS16_LO16:
+ return Symbol::ABSOLUTE_REF;
+
+ case elfcpp::R_MIPS_26:
+ case elfcpp::R_MIPS16_26:
+ case elfcpp::R_MIPS_GPREL32:
+ case elfcpp::R_MIPS_GPREL16:
+ case elfcpp::R_MIPS16_GPREL:
+ case elfcpp::R_MIPS_REL32:
+ return Symbol::RELATIVE_REF;
+
+ case elfcpp::R_MIPS_PC16:
+ case elfcpp::R_MIPS_PC32:
+ case elfcpp::R_MIPS_GNU_REL16_S2:
+ case elfcpp::R_MIPS_JALR:
+ return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF;
+
+ case elfcpp::R_MIPS_GOT16:
+ case elfcpp::R_MIPS16_GOT16:
+ case elfcpp::R_MIPS_CALL16:
+ case elfcpp::R_MIPS16_CALL16:
+ case elfcpp::R_MIPS_GOT_DISP:
+ case elfcpp::R_MIPS_GOT_HI16:
+ case elfcpp::R_MIPS_CALL_HI16:
+ case elfcpp::R_MIPS_GOT_LO16:
+ case elfcpp::R_MIPS_CALL_LO16:
+ case elfcpp::R_MIPS_LITERAL:
+ case elfcpp::R_MIPS_GOT_PAGE:
+ case elfcpp::R_MIPS_GOT_OFST:
+ // Absolute in GOT.
+ return Symbol::RELATIVE_REF;
+
+ case elfcpp::R_MIPS_TLS_DTPMOD32:
+ case elfcpp::R_MIPS_TLS_DTPREL32:
+ case elfcpp::R_MIPS_TLS_DTPMOD64:
+ case elfcpp::R_MIPS_TLS_DTPREL64:
+ case elfcpp::R_MIPS_TLS_GD:
+ case elfcpp::R_MIPS_TLS_LDM:
+ case elfcpp::R_MIPS_TLS_DTPREL_HI16:
+ case elfcpp::R_MIPS_TLS_DTPREL_LO16:
+ case elfcpp::R_MIPS_TLS_GOTTPREL:
+ case elfcpp::R_MIPS_TLS_TPREL32:
+ case elfcpp::R_MIPS_TLS_TPREL64:
+ case elfcpp::R_MIPS_TLS_TPREL_HI16:
+ case elfcpp::R_MIPS_TLS_TPREL_LO16:
+ return Symbol::TLS_REF;
+
+ case elfcpp::R_MIPS_COPY:
+ case elfcpp::R_MIPS_UNUSED1:
+ case elfcpp::R_MIPS_UNUSED2:
+ case elfcpp::R_MIPS_UNUSED3:
+ case elfcpp::R_MIPS_GLOB_DAT:
+ case elfcpp::R_MIPS_JUMP_SLOT:
+ default:
+ // Not expected. We will give an error later.
+ return 0;
+ }
+}
+
+// Report an unsupported relocation against a local symbol.
+
+template<int size, bool big_endian>
+void
+Target_mips<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);
+}
+
+// Report an unsupported relocation against a global symbol.
+
+template<int size, bool big_endian>
+void
+Target_mips<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());
+}
+
+template<int size, bool big_endian>
+Target::Target_info Target_mips<size, big_endian>::mips_info =
+{
+ size, // size
+ big_endian, // is_big_endian
+ elfcpp::EM_MIPS, // 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
+ "/lib/ld.so.1", // dynamic_linker
+ 0x400000, // default_text_segment_address
+ 64 * 1024, // abi_pagesize (overridable by -z max-page-size)
+ 4 * 1024, // common_pagesize (overridable by -z common-page-size)
+ elfcpp::SHN_UNDEF, // small_common_shndx
+ elfcpp::SHN_UNDEF, // large_common_shndx
+ 0, // small_common_section_flags
+ 0, // large_common_section_flags
+ NULL, // attributes_section
+ NULL // attributes_vendor
+};
+
+// Adjust ELF file header.
+
+template<int size, bool big_endian>
+void
+Target_mips<size, big_endian>::do_adjust_elf_header(
+ unsigned char* view,
+ int len) const
+{
+ gold_assert(len == elfcpp::Elf_sizes<size>::ehdr_size);
+
+ elfcpp::Ehdr<size, big_endian> ehdr(view);
+ unsigned char e_ident[elfcpp::EI_NIDENT];
+ memcpy(e_ident, ehdr.get_e_ident(), elfcpp::EI_NIDENT);
+
+ e_ident[elfcpp::EI_VERSION] = elfcpp::EV_CURRENT;
+ e_ident[elfcpp::EI_ABIVERSION] = elfcpp::EV_NONE;
+
+ elfcpp::Ehdr_write<size, big_endian> oehdr(view);
+ oehdr.put_e_ident(e_ident);
+ oehdr.put_e_flags(this->processor_specific_flags_);
+}
+
+// The selector for mips object files.
+
+template<int size, bool big_endian>
+class Target_selector_mips : public Target_selector
+{
+public:
+ Target_selector_mips()
+ : Target_selector(elfcpp::EM_MIPS, size, big_endian,
+ (size == 64 ?
+ (big_endian ? "elf64-tradbigmips" : "elf64-tradlittlemips") :
+ (big_endian ? "elf32-tradbigmips" : "elf32-tradlittlemips")),
+ (size == 64 ?
+ (big_endian ? "elf64-tradbigmips" : "elf64-tradlittlemips") :
+ (big_endian ? "elf32-tradbigmips" : "elf32-tradlittlemips")))
+ { }
+
+ Target* do_instantiate_target()
+ { return new Target_mips<size, big_endian>(); }
+};
+
+Target_selector_mips<32, false> target_selector_mips32;
+
+
+} // End anonymous namespace.
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