| 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,
|
| + §ion_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, §ion_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.
|
|
|