X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gold%2Foutput.h;h=77222376e2e14cfe3e94cb0282c7bcf927a31058;hb=a2d13a0d5bae65f01d59b90fca959bf905fea4f2;hp=72d1dbaf5e0b87bd5e37fbf8679a907cea8e3fbc;hpb=5146f4485680b0029143c2e17bf5393dd4b89792;p=deliverable%2Fbinutils-gdb.git diff --git a/gold/output.h b/gold/output.h index 72d1dbaf5e..77222376e2 100644 --- a/gold/output.h +++ b/gold/output.h @@ -92,7 +92,7 @@ class Output_data bool is_data_size_fixed() const { return this->is_data_size_fixed_; } - + // Return the file offset. This is only valid after // Layout::finalize is finished. For some non-allocated sections, // it may not be valid until near the end of the link. @@ -103,8 +103,8 @@ class Output_data return this->offset_; } - // Reset the address and file offset. This essentially disables the - // sanity testing about duplicate and unknown settings. + // Reset the address, file offset and data size. This essentially + // disables the sanity testing about duplicate and unknown settings. void reset_address_and_file_offset() { @@ -115,6 +115,14 @@ class Output_data this->do_reset_address_and_file_offset(); } + // As above, but just for data size. + void + reset_data_size() + { + if (!this->is_data_size_fixed_) + this->is_data_size_valid_ = false; + } + // Return true if address and file offset already have reset values. In // other words, calling reset_address_and_file_offset will not change them. bool @@ -406,7 +414,7 @@ class Output_data } // Fix the data size. Once it is fixed, it cannot be changed - // and the data size remains always valid. + // and the data size remains always valid. void fix_data_size() { @@ -1021,40 +1029,44 @@ class Output_reloc // A reloc against a global symbol. Output_reloc(Symbol* gsym, unsigned int type, Output_data* od, - Address address, bool is_relative, bool is_symbolless); + Address address, bool is_relative, bool is_symbolless, + bool use_plt_offset); Output_reloc(Symbol* gsym, unsigned int type, - Sized_relobj* relobj, + Sized_relobj* relobj, unsigned int shndx, Address address, bool is_relative, - bool is_symbolless); + bool is_symbolless, bool use_plt_offset); // A reloc against a local symbol or local section symbol. Output_reloc(Sized_relobj* relobj, unsigned int local_sym_index, unsigned int type, Output_data* od, Address address, bool is_relative, - bool is_symbolless, bool is_section_symbol); + bool is_symbolless, bool is_section_symbol, + bool use_plt_offset); Output_reloc(Sized_relobj* relobj, unsigned int local_sym_index, unsigned int type, unsigned int shndx, Address address, bool is_relative, - bool is_symbolless, bool is_section_symbol); + bool is_symbolless, bool is_section_symbol, + bool use_plt_offset); // A reloc against the STT_SECTION symbol of an output section. Output_reloc(Output_section* os, unsigned int type, Output_data* od, - Address address); + Address address, bool is_relative); Output_reloc(Output_section* os, unsigned int type, - Sized_relobj* relobj, - unsigned int shndx, Address address); + Sized_relobj* relobj, unsigned int shndx, + Address address, bool is_relative); - // An absolute relocation with no symbol. + // An absolute or relative relocation with no symbol. - Output_reloc(unsigned int type, Output_data* od, Address address); + Output_reloc(unsigned int type, Output_data* od, Address address, + bool is_relative); Output_reloc(unsigned int type, Sized_relobj* relobj, - unsigned int shndx, Address address); + unsigned int shndx, Address address, bool is_relative); // A target specific relocation. The target will be called to get // the symbol index, passing ARG. The type and offset will be set @@ -1088,10 +1100,10 @@ class Output_reloc is_local_section_symbol() const { return (this->local_sym_index_ != GSYM_CODE - && this->local_sym_index_ != SECTION_CODE - && this->local_sym_index_ != INVALID_CODE + && this->local_sym_index_ != SECTION_CODE + && this->local_sym_index_ != INVALID_CODE && this->local_sym_index_ != TARGET_CODE - && this->is_section_symbol_); + && this->is_section_symbol_); } // Return whether this is a target specific relocation. @@ -1216,7 +1228,7 @@ class Output_reloc // input file. unsigned int local_sym_index_; // The reloc type--a processor specific code. - unsigned int type_ : 29; + unsigned int type_ : 28; // True if the relocation is a RELATIVE relocation. bool is_relative_ : 1; // True if the relocation is one which should not use @@ -1224,6 +1236,9 @@ class Output_reloc bool is_symbolless_ : 1; // True if the relocation is against a section symbol. bool is_section_symbol_ : 1; + // True if the addend should be the PLT offset. + // (Used only for RELA, but stored here for space.) + bool use_plt_offset_ : 1; // If the reloc address is an input section in an object, the // section index. This is INVALID_CODE if the reloc address is // specified in some other way. @@ -1249,17 +1264,18 @@ class Output_reloc Output_reloc(Symbol* gsym, unsigned int type, Output_data* od, Address address, Addend addend, bool is_relative, - bool is_symbolless) - : rel_(gsym, type, od, address, is_relative, is_symbolless), + bool is_symbolless, bool use_plt_offset) + : rel_(gsym, type, od, address, is_relative, is_symbolless, + use_plt_offset), addend_(addend) { } Output_reloc(Symbol* gsym, unsigned int type, - Sized_relobj* relobj, + Sized_relobj* relobj, unsigned int shndx, Address address, Addend addend, - bool is_relative, bool is_symbolless) + bool is_relative, bool is_symbolless, bool use_plt_offset) : rel_(gsym, type, relobj, shndx, address, is_relative, - is_symbolless), addend_(addend) + is_symbolless, use_plt_offset), addend_(addend) { } // A reloc against a local symbol. @@ -1268,9 +1284,10 @@ class Output_reloc unsigned int local_sym_index, unsigned int type, Output_data* od, Address address, Addend addend, bool is_relative, - bool is_symbolless, bool is_section_symbol) + bool is_symbolless, bool is_section_symbol, + bool use_plt_offset) : rel_(relobj, local_sym_index, type, od, address, is_relative, - is_symbolless, is_section_symbol), + is_symbolless, is_section_symbol, use_plt_offset), addend_(addend) { } @@ -1278,35 +1295,38 @@ class Output_reloc unsigned int local_sym_index, unsigned int type, unsigned int shndx, Address address, Addend addend, bool is_relative, - bool is_symbolless, bool is_section_symbol) + bool is_symbolless, bool is_section_symbol, + bool use_plt_offset) : rel_(relobj, local_sym_index, type, shndx, address, is_relative, - is_symbolless, is_section_symbol), + is_symbolless, is_section_symbol, use_plt_offset), addend_(addend) { } // A reloc against the STT_SECTION symbol of an output section. Output_reloc(Output_section* os, unsigned int type, Output_data* od, - Address address, Addend addend) - : rel_(os, type, od, address), addend_(addend) + Address address, Addend addend, bool is_relative) + : rel_(os, type, od, address, is_relative), addend_(addend) { } Output_reloc(Output_section* os, unsigned int type, - Sized_relobj* relobj, - unsigned int shndx, Address address, Addend addend) - : rel_(os, type, relobj, shndx, address), addend_(addend) + Sized_relobj* relobj, + unsigned int shndx, Address address, Addend addend, + bool is_relative) + : rel_(os, type, relobj, shndx, address, is_relative), addend_(addend) { } - // An absolute relocation with no symbol. + // An absolute or relative relocation with no symbol. Output_reloc(unsigned int type, Output_data* od, Address address, - Addend addend) - : rel_(type, od, address), addend_(addend) + Addend addend, bool is_relative) + : rel_(type, od, address, is_relative), addend_(addend) { } Output_reloc(unsigned int type, Sized_relobj* relobj, - unsigned int shndx, Address address, Addend addend) - : rel_(type, relobj, shndx, address), addend_(addend) + unsigned int shndx, Address address, Addend addend, + bool is_relative) + : rel_(type, relobj, shndx, address, is_relative), addend_(addend) { } // A target specific relocation. The target will be called to get @@ -1389,6 +1409,55 @@ class Output_data_reloc_generic : public Output_section_data_build sort_relocs() const { return this->sort_relocs_; } + // Add a reloc of type TYPE against the global symbol GSYM. The + // relocation applies to the data at offset ADDRESS within OD. + virtual void + add_global_generic(Symbol* gsym, unsigned int type, Output_data* od, + uint64_t address, uint64_t addend) = 0; + + // Add a reloc of type TYPE against the global symbol GSYM. The + // relocation applies to data at offset ADDRESS within section SHNDX + // of object file RELOBJ. OD is the associated output section. + virtual void + add_global_generic(Symbol* gsym, unsigned int type, Output_data* od, + Relobj* relobj, unsigned int shndx, uint64_t address, + uint64_t addend) = 0; + + // Add a reloc of type TYPE against the local symbol LOCAL_SYM_INDEX + // in RELOBJ. The relocation applies to the data at offset ADDRESS + // within OD. + virtual void + add_local_generic(Relobj* relobj, unsigned int local_sym_index, + unsigned int type, Output_data* od, uint64_t address, + uint64_t addend) = 0; + + // Add a reloc of type TYPE against the local symbol LOCAL_SYM_INDEX + // in RELOBJ. The relocation applies to the data at offset ADDRESS + // within section SHNDX of RELOBJ. OD is the associated output + // section. + virtual void + add_local_generic(Relobj* relobj, unsigned int local_sym_index, + unsigned int type, Output_data* od, unsigned int shndx, + uint64_t address, uint64_t addend) = 0; + + // Add a reloc of type TYPE against the STT_SECTION symbol of the + // output section OS. The relocation applies to the data at offset + // ADDRESS within OD. + virtual void + add_output_section_generic(Output_section *os, unsigned int type, + Output_data* od, uint64_t address, + uint64_t addend) = 0; + + // Add a reloc of type TYPE against the STT_SECTION symbol of the + // output section OS. The relocation applies to the data at offset + // ADDRESS within section SHNDX of RELOBJ. OD is the associated + // output section. + virtual void + add_output_section_generic(Output_section* os, unsigned int type, + Output_data* od, Relobj* relobj, + unsigned int shndx, uint64_t address, + uint64_t addend) = 0; + protected: // Note that we've added another relative reloc. void @@ -1450,7 +1519,8 @@ class Output_data_reloc_base : public Output_data_reloc_generic { this->relocs_.push_back(reloc); this->set_current_data_size(this->relocs_.size() * reloc_size); - od->add_dynamic_reloc(); + if (dynamic) + od->add_dynamic_reloc(); if (reloc.is_relative()) this->bump_relative_reloc_count(); Sized_relobj* relobj = reloc.get_relobj(); @@ -1500,32 +1570,41 @@ class Output_data_reloc void add_global(Symbol* gsym, unsigned int type, Output_data* od, Address address) - { this->add(od, Output_reloc_type(gsym, type, od, address, false, false)); } + { + this->add(od, Output_reloc_type(gsym, type, od, address, + false, false, false)); + } void add_global(Symbol* gsym, unsigned int type, Output_data* od, - Sized_relobj* relobj, + Sized_relobj* relobj, unsigned int shndx, Address address) - { this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, - false, false)); } - - // These are to simplify the Copy_relocs class. + { + this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, + false, false, false)); + } void - add_global(Symbol* gsym, unsigned int type, Output_data* od, Address address, - Address addend) + add_global_generic(Symbol* gsym, unsigned int type, Output_data* od, + uint64_t address, uint64_t addend) { gold_assert(addend == 0); - this->add_global(gsym, type, od, address); + this->add(od, Output_reloc_type(gsym, type, od, + convert_types(address), + false, false, false)); } void - add_global(Symbol* gsym, unsigned int type, Output_data* od, - Sized_relobj* relobj, - unsigned int shndx, Address address, Address addend) + add_global_generic(Symbol* gsym, unsigned int type, Output_data* od, + Relobj* relobj, unsigned int shndx, uint64_t address, + uint64_t addend) { gold_assert(addend == 0); - this->add_global(gsym, type, od, relobj, shndx, address); + Sized_relobj* sized_relobj = + static_cast*>(relobj); + this->add(od, Output_reloc_type(gsym, type, sized_relobj, shndx, + convert_types(address), + false, false, false)); } // Add a RELATIVE reloc against a global symbol. The final relocation @@ -1533,16 +1612,19 @@ class Output_data_reloc void add_global_relative(Symbol* gsym, unsigned int type, Output_data* od, - Address address) - { this->add(od, Output_reloc_type(gsym, type, od, address, true, true)); } + Address address) + { + this->add(od, Output_reloc_type(gsym, type, od, address, true, true, + false)); + } void add_global_relative(Symbol* gsym, unsigned int type, Output_data* od, - Sized_relobj* relobj, - unsigned int shndx, Address address) + Sized_relobj* relobj, + unsigned int shndx, Address address) { this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, - true, true)); + true, true, false)); } // Add a global relocation which does not use a symbol for the relocation, @@ -1551,7 +1633,10 @@ class Output_data_reloc void add_symbolless_global_addend(Symbol* gsym, unsigned int type, Output_data* od, Address address) - { this->add(od, Output_reloc_type(gsym, type, od, address, false, true)); } + { + this->add(od, Output_reloc_type(gsym, type, od, address, false, true, + false)); + } void add_symbolless_global_addend(Symbol* gsym, unsigned int type, @@ -1560,7 +1645,7 @@ class Output_data_reloc unsigned int shndx, Address address) { this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, - false, true)); + false, true, false)); } // Add a reloc against a local symbol. @@ -1571,7 +1656,7 @@ class Output_data_reloc Output_data* od, Address address) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, - address, false, false, false)); + address, false, false, false, false)); } void @@ -1580,27 +1665,53 @@ class Output_data_reloc Output_data* od, unsigned int shndx, Address address) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, - address, false, false, false)); + address, false, false, false, false)); + } + + void + add_local_generic(Relobj* relobj, unsigned int local_sym_index, + unsigned int type, Output_data* od, uint64_t address, + uint64_t addend) + { + gold_assert(addend == 0); + Sized_relobj* sized_relobj = + static_cast *>(relobj); + this->add(od, Output_reloc_type(sized_relobj, local_sym_index, type, od, + convert_types(address), + false, false, false, false)); + } + + void + add_local_generic(Relobj* relobj, unsigned int local_sym_index, + unsigned int type, Output_data* od, unsigned int shndx, + uint64_t address, uint64_t addend) + { + gold_assert(addend == 0); + Sized_relobj* sized_relobj = + static_cast*>(relobj); + this->add(od, Output_reloc_type(sized_relobj, local_sym_index, type, shndx, + convert_types(address), + false, false, false, false)); } // Add a RELATIVE reloc against a local symbol. void add_local_relative(Sized_relobj* relobj, - unsigned int local_sym_index, unsigned int type, - Output_data* od, Address address) + unsigned int local_sym_index, unsigned int type, + Output_data* od, Address address) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, - address, true, true, false)); + address, true, true, false, false)); } void add_local_relative(Sized_relobj* relobj, - unsigned int local_sym_index, unsigned int type, - Output_data* od, unsigned int shndx, Address address) + unsigned int local_sym_index, unsigned int type, + Output_data* od, unsigned int shndx, Address address) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, - address, true, true, false)); + address, true, true, false, false)); } // Add a local relocation which does not use a symbol for the relocation, @@ -1612,7 +1723,7 @@ class Output_data_reloc Output_data* od, Address address) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, - address, false, true, false)); + address, false, true, false, false)); } void @@ -1622,7 +1733,7 @@ class Output_data_reloc Address address) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, - address, false, true, false)); + address, false, true, false, false)); } // Add a reloc against a local section symbol. This will be @@ -1631,20 +1742,20 @@ class Output_data_reloc void add_local_section(Sized_relobj* relobj, - unsigned int input_shndx, unsigned int type, - Output_data* od, Address address) + unsigned int input_shndx, unsigned int type, + Output_data* od, Address address) { this->add(od, Output_reloc_type(relobj, input_shndx, type, od, - address, false, false, true)); + address, false, false, true, false)); } void add_local_section(Sized_relobj* relobj, - unsigned int input_shndx, unsigned int type, - Output_data* od, unsigned int shndx, Address address) + unsigned int input_shndx, unsigned int type, + Output_data* od, unsigned int shndx, Address address) { this->add(od, Output_reloc_type(relobj, input_shndx, type, shndx, - address, false, false, true)); + address, false, false, true, false)); } // A reloc against the STT_SECTION symbol of an output section. @@ -1654,25 +1765,76 @@ class Output_data_reloc void add_output_section(Output_section* os, unsigned int type, Output_data* od, Address address) - { this->add(od, Output_reloc_type(os, type, od, address)); } + { this->add(od, Output_reloc_type(os, type, od, address, false)); } void add_output_section(Output_section* os, unsigned int type, Output_data* od, Sized_relobj* relobj, - unsigned int shndx, Address address) - { this->add(od, Output_reloc_type(os, type, relobj, shndx, address)); } + unsigned int shndx, Address address) + { this->add(od, Output_reloc_type(os, type, relobj, shndx, address, false)); } + + void + add_output_section_generic(Output_section* os, unsigned int type, + Output_data* od, uint64_t address, + uint64_t addend) + { + gold_assert(addend == 0); + this->add(od, Output_reloc_type(os, type, od, + convert_types(address), + false)); + } + + void + add_output_section_generic(Output_section* os, unsigned int type, + Output_data* od, Relobj* relobj, + unsigned int shndx, uint64_t address, + uint64_t addend) + { + gold_assert(addend == 0); + Sized_relobj* sized_relobj = + static_cast*>(relobj); + this->add(od, Output_reloc_type(os, type, sized_relobj, shndx, + convert_types(address), + false)); + } + + // As above, but the reloc TYPE is relative + + void + add_output_section_relative(Output_section* os, unsigned int type, + Output_data* od, Address address) + { this->add(od, Output_reloc_type(os, type, od, address, true)); } + + void + add_output_section_relative(Output_section* os, unsigned int type, + Output_data* od, + Sized_relobj* relobj, + unsigned int shndx, Address address) + { this->add(od, Output_reloc_type(os, type, relobj, shndx, address, true)); } // Add an absolute relocation. void add_absolute(unsigned int type, Output_data* od, Address address) - { this->add(od, Output_reloc_type(type, od, address)); } + { this->add(od, Output_reloc_type(type, od, address, false)); } void add_absolute(unsigned int type, Output_data* od, Sized_relobj* relobj, unsigned int shndx, Address address) - { this->add(od, Output_reloc_type(type, relobj, shndx, address)); } + { this->add(od, Output_reloc_type(type, relobj, shndx, address, false)); } + + // Add a relative relocation + + void + add_relative(unsigned int type, Output_data* od, Address address) + { this->add(od, Output_reloc_type(type, od, address, true)); } + + void + add_relative(unsigned int type, Output_data* od, + Sized_relobj* relobj, + unsigned int shndx, Address address) + { this->add(od, Output_reloc_type(type, relobj, shndx, address, true)); } // Add a target specific relocation. A target which calls this must // define the reloc_symbol_index and reloc_addend virtual functions. @@ -1713,16 +1875,43 @@ class Output_data_reloc void add_global(Symbol* gsym, unsigned int type, Output_data* od, Address address, Addend addend) - { this->add(od, Output_reloc_type(gsym, type, od, address, addend, - false, false)); } + { + this->add(od, Output_reloc_type(gsym, type, od, address, addend, + false, false, false)); + } void add_global(Symbol* gsym, unsigned int type, Output_data* od, - Sized_relobj* relobj, + Sized_relobj* relobj, unsigned int shndx, Address address, Addend addend) - { this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, - addend, false, false)); } + { + this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, + addend, false, false, false)); + } + + void + add_global_generic(Symbol* gsym, unsigned int type, Output_data* od, + uint64_t address, uint64_t addend) + { + this->add(od, Output_reloc_type(gsym, type, od, + convert_types(address), + convert_types(addend), + false, false, false)); + } + + void + add_global_generic(Symbol* gsym, unsigned int type, Output_data* od, + Relobj* relobj, unsigned int shndx, uint64_t address, + uint64_t addend) + { + Sized_relobj* sized_relobj = + static_cast*>(relobj); + this->add(od, Output_reloc_type(gsym, type, sized_relobj, shndx, + convert_types(address), + convert_types(addend), + false, false, false)); + } // Add a RELATIVE reloc against a global symbol. The final output // relocation will not reference the symbol, but we must keep the symbol @@ -1731,16 +1920,21 @@ class Output_data_reloc void add_global_relative(Symbol* gsym, unsigned int type, Output_data* od, - Address address, Addend addend) - { this->add(od, Output_reloc_type(gsym, type, od, address, addend, true, - true)); } + Address address, Addend addend, bool use_plt_offset) + { + this->add(od, Output_reloc_type(gsym, type, od, address, addend, true, + true, use_plt_offset)); + } void add_global_relative(Symbol* gsym, unsigned int type, Output_data* od, - Sized_relobj* relobj, - unsigned int shndx, Address address, Addend addend) - { this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, - addend, true, true)); } + Sized_relobj* relobj, + unsigned int shndx, Address address, Addend addend, + bool use_plt_offset) + { + this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, + addend, true, true, use_plt_offset)); + } // Add a global relocation which does not use a symbol for the relocation, // but which gets its addend from a symbol. @@ -1748,16 +1942,21 @@ class Output_data_reloc void add_symbolless_global_addend(Symbol* gsym, unsigned int type, Output_data* od, Address address, Addend addend) - { this->add(od, Output_reloc_type(gsym, type, od, address, addend, - false, true)); } + { + this->add(od, Output_reloc_type(gsym, type, od, address, addend, + false, true, false)); + } void add_symbolless_global_addend(Symbol* gsym, unsigned int type, Output_data* od, Sized_relobj* relobj, - unsigned int shndx, Address address, Addend addend) - { this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, - addend, false, true)); } + unsigned int shndx, Address address, + Addend addend) + { + this->add(od, Output_reloc_type(gsym, type, relobj, shndx, address, + addend, false, true, false)); + } // Add a reloc against a local symbol. @@ -1767,7 +1966,7 @@ class Output_data_reloc Output_data* od, Address address, Addend addend) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, address, - addend, false, false, false)); + addend, false, false, false, false)); } void @@ -1777,28 +1976,58 @@ class Output_data_reloc Addend addend) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, - address, addend, false, false, false)); + address, addend, false, false, false, + false)); + } + + void + add_local_generic(Relobj* relobj, unsigned int local_sym_index, + unsigned int type, Output_data* od, uint64_t address, + uint64_t addend) + { + Sized_relobj* sized_relobj = + static_cast *>(relobj); + this->add(od, Output_reloc_type(sized_relobj, local_sym_index, type, od, + convert_types(address), + convert_types(addend), + false, false, false, false)); + } + + void + add_local_generic(Relobj* relobj, unsigned int local_sym_index, + unsigned int type, Output_data* od, unsigned int shndx, + uint64_t address, uint64_t addend) + { + Sized_relobj* sized_relobj = + static_cast*>(relobj); + this->add(od, Output_reloc_type(sized_relobj, local_sym_index, type, shndx, + convert_types(address), + convert_types(addend), + false, false, false, false)); } // Add a RELATIVE reloc against a local symbol. void add_local_relative(Sized_relobj* relobj, - unsigned int local_sym_index, unsigned int type, - Output_data* od, Address address, Addend addend) + unsigned int local_sym_index, unsigned int type, + Output_data* od, Address address, Addend addend, + bool use_plt_offset) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, address, - addend, true, true, false)); + addend, true, true, false, + use_plt_offset)); } void add_local_relative(Sized_relobj* relobj, - unsigned int local_sym_index, unsigned int type, - Output_data* od, unsigned int shndx, Address address, - Addend addend) + unsigned int local_sym_index, unsigned int type, + Output_data* od, unsigned int shndx, Address address, + Addend addend, bool use_plt_offset) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, - address, addend, true, true, false)); + address, addend, true, true, false, + use_plt_offset)); } // Add a local relocation which does not use a symbol for the relocation, @@ -1810,7 +2039,7 @@ class Output_data_reloc Output_data* od, Address address, Addend addend) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, od, address, - addend, false, true, false)); + addend, false, true, false, false)); } void @@ -1820,7 +2049,8 @@ class Output_data_reloc Address address, Addend addend) { this->add(od, Output_reloc_type(relobj, local_sym_index, type, shndx, - address, addend, false, true, false)); + address, addend, false, true, false, + false)); } // Add a reloc against a local section symbol. This will be @@ -1829,11 +2059,11 @@ class Output_data_reloc void add_local_section(Sized_relobj* relobj, - unsigned int input_shndx, unsigned int type, - Output_data* od, Address address, Addend addend) + unsigned int input_shndx, unsigned int type, + Output_data* od, Address address, Addend addend) { this->add(od, Output_reloc_type(relobj, input_shndx, type, od, address, - addend, false, false, true)); + addend, false, false, true, false)); } void @@ -1843,7 +2073,8 @@ class Output_data_reloc Addend addend) { this->add(od, Output_reloc_type(relobj, input_shndx, type, shndx, - address, addend, false, false, true)); + address, addend, false, false, true, + false)); } // A reloc against the STT_SECTION symbol of an output section. @@ -1851,27 +2082,91 @@ class Output_data_reloc void add_output_section(Output_section* os, unsigned int type, Output_data* od, Address address, Addend addend) - { this->add(od, Output_reloc_type(os, type, od, address, addend)); } + { this->add(od, Output_reloc_type(os, type, od, address, addend, false)); } void add_output_section(Output_section* os, unsigned int type, Output_data* od, - Sized_relobj* relobj, + Sized_relobj* relobj, unsigned int shndx, Address address, Addend addend) - { this->add(od, Output_reloc_type(os, type, relobj, shndx, address, - addend)); } + { + this->add(od, Output_reloc_type(os, type, relobj, shndx, address, + addend, false)); + } + + void + add_output_section_generic(Output_section* os, unsigned int type, + Output_data* od, uint64_t address, + uint64_t addend) + { + this->add(od, Output_reloc_type(os, type, od, + convert_types(address), + convert_types(addend), + false)); + } + + void + add_output_section_generic(Output_section* os, unsigned int type, + Output_data* od, Relobj* relobj, + unsigned int shndx, uint64_t address, + uint64_t addend) + { + Sized_relobj* sized_relobj = + static_cast*>(relobj); + this->add(od, Output_reloc_type(os, type, sized_relobj, shndx, + convert_types(address), + convert_types(addend), + false)); + } + + // As above, but the reloc TYPE is relative + + void + add_output_section_relative(Output_section* os, unsigned int type, + Output_data* od, Address address, Addend addend) + { this->add(od, Output_reloc_type(os, type, od, address, addend, true)); } + + void + add_output_section_relative(Output_section* os, unsigned int type, + Output_data* od, + Sized_relobj* relobj, + unsigned int shndx, Address address, + Addend addend) + { + this->add(od, Output_reloc_type(os, type, relobj, shndx, + address, addend, true)); + } // Add an absolute relocation. void add_absolute(unsigned int type, Output_data* od, Address address, Addend addend) - { this->add(od, Output_reloc_type(type, od, address, addend)); } + { this->add(od, Output_reloc_type(type, od, address, addend, false)); } void add_absolute(unsigned int type, Output_data* od, Sized_relobj* relobj, unsigned int shndx, Address address, Addend addend) - { this->add(od, Output_reloc_type(type, relobj, shndx, address, addend)); } + { + this->add(od, Output_reloc_type(type, relobj, shndx, address, addend, + false)); + } + + // Add a relative relocation + + void + add_relative(unsigned int type, Output_data* od, Address address, + Addend addend) + { this->add(od, Output_reloc_type(type, od, address, addend, true)); } + + void + add_relative(unsigned int type, Output_data* od, + Sized_relobj* relobj, + unsigned int shndx, Address address, Addend addend) + { + this->add(od, Output_reloc_type(type, relobj, shndx, address, addend, + true)); + } // Add a target specific relocation. A target which calls this must // define the reloc_symbol_index and reloc_addend virtual functions. @@ -1893,7 +2188,7 @@ class Output_data_reloc // Output_relocatable_relocs represents a relocation section in a // relocatable link. The actual data is written out in the target -// hook relocate_for_relocatable. This just saves space for it. +// hook relocate_relocs. This just saves space for it. template class Output_relocatable_relocs : public Output_section_data @@ -1959,29 +2254,50 @@ class Output_data_group : public Output_section_data // Output_data_got is used to manage a GOT. Each entry in the GOT is // for one symbol--either a global symbol or a local symbol in an // object. The target specific code adds entries to the GOT as -// needed. +// needed. The GOT_SIZE template parameter is the size in bits of a +// GOT entry, typically 32 or 64. -template -class Output_data_got : public Output_section_data_build +class Output_data_got_base : public Output_section_data_build { public: - typedef typename elfcpp::Elf_types::Elf_Addr Valtype; - typedef Output_data_reloc Rel_dyn; - typedef Output_data_reloc Rela_dyn; + Output_data_got_base(uint64_t align) + : Output_section_data_build(align) + { } + + Output_data_got_base(off_t data_size, uint64_t align) + : Output_section_data_build(data_size, align) + { } + + // Reserve the slot at index I in the GOT. + void + reserve_slot(unsigned int i) + { this->do_reserve_slot(i); } + + protected: + // Reserve the slot at index I in the GOT. + virtual void + do_reserve_slot(unsigned int i) = 0; +}; + +template +class Output_data_got : public Output_data_got_base +{ + public: + typedef typename elfcpp::Elf_types::Elf_Addr Valtype; Output_data_got() - : Output_section_data_build(Output_data::default_alignment_for_size(size)), + : Output_data_got_base(Output_data::default_alignment_for_size(got_size)), entries_(), free_list_() { } Output_data_got(off_t data_size) - : Output_section_data_build(data_size, - Output_data::default_alignment_for_size(size)), + : Output_data_got_base(data_size, + Output_data::default_alignment_for_size(got_size)), entries_(), free_list_() { // For an incremental update, we have an existing GOT section. // Initialize the list of entries and the free list. - this->entries_.resize(data_size / (size / 8)); + this->entries_.resize(data_size / (got_size / 8)); this->free_list_.init(data_size, false); } @@ -1995,67 +2311,69 @@ class Output_data_got : public Output_section_data_build bool add_global_plt(Symbol* gsym, unsigned int got_type); + // Like add_global, but for a TLS symbol where the value will be + // offset using Target::tls_offset_for_global. + bool + add_global_tls(Symbol* gsym, unsigned int got_type) + { return add_global_plt(gsym, got_type); } + // Add an entry for a global symbol to the GOT, and add a dynamic // relocation of type R_TYPE for the GOT entry. void add_global_with_rel(Symbol* gsym, unsigned int got_type, - Rel_dyn* rel_dyn, unsigned int r_type); - - void - add_global_with_rela(Symbol* gsym, unsigned int got_type, - Rela_dyn* rela_dyn, unsigned int r_type); + Output_data_reloc_generic* rel_dyn, unsigned int r_type); // Add a pair of entries for a global symbol to the GOT, and add // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively. void add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, - Rel_dyn* rel_dyn, unsigned int r_type_1, - unsigned int r_type_2); - - void - add_global_pair_with_rela(Symbol* gsym, unsigned int got_type, - Rela_dyn* rela_dyn, unsigned int r_type_1, - unsigned int r_type_2); + Output_data_reloc_generic* rel_dyn, + unsigned int r_type_1, unsigned int r_type_2); // Add an entry for a local symbol to the GOT. This returns true if // this is a new GOT entry, false if the symbol already has a GOT // entry. bool - add_local(Sized_relobj_file* object, unsigned int sym_index, - unsigned int got_type); + add_local(Relobj* object, unsigned int sym_index, unsigned int got_type); // Like add_local, but use the PLT offset of the local symbol if it // has one. bool - add_local_plt(Sized_relobj_file* object, - unsigned int sym_index, - unsigned int got_type); + add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type); + + // Like add_local, but for a TLS symbol where the value will be + // offset using Target::tls_offset_for_local. + bool + add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) + { return add_local_plt(object, sym_index, got_type); } // Add an entry for a local symbol to the GOT, and add a dynamic // relocation of type R_TYPE for the GOT entry. void - add_local_with_rel(Sized_relobj_file* object, - unsigned int sym_index, unsigned int got_type, - Rel_dyn* rel_dyn, unsigned int r_type); - - void - add_local_with_rela(Sized_relobj_file* object, - unsigned int sym_index, unsigned int got_type, - Rela_dyn* rela_dyn, unsigned int r_type); + add_local_with_rel(Relobj* object, unsigned int sym_index, + unsigned int got_type, Output_data_reloc_generic* rel_dyn, + unsigned int r_type); // Add a pair of entries for a local symbol to the GOT, and add - // dynamic relocations of type R_TYPE_1 and R_TYPE_2, respectively. + // a dynamic relocation of type R_TYPE using the section symbol of + // the output section to which input section SHNDX maps, on the first. + // The first got entry will have a value of zero, the second the + // value of the local symbol. void - add_local_pair_with_rel(Sized_relobj_file* object, - unsigned int sym_index, unsigned int shndx, - unsigned int got_type, Rel_dyn* rel_dyn, - unsigned int r_type_1, unsigned int r_type_2); + add_local_pair_with_rel(Relobj* object, unsigned int sym_index, + unsigned int shndx, unsigned int got_type, + Output_data_reloc_generic* rel_dyn, + unsigned int r_type); + // Add a pair of entries for a local symbol to the GOT, and add + // a dynamic relocation of type R_TYPE using STN_UNDEF on the first. + // The first got entry will have a value of zero, the second the + // value of the local symbol offset by Target::tls_offset_for_local. void - add_local_pair_with_rela(Sized_relobj_file* object, - unsigned int sym_index, unsigned int shndx, - unsigned int got_type, Rela_dyn* rela_dyn, - unsigned int r_type_1, unsigned int r_type_2); + add_local_tls_pair(Relobj* object, unsigned int sym_index, + unsigned int got_type, + Output_data_reloc_generic* rel_dyn, + unsigned int r_type); // Add a constant to the GOT. This returns the offset of the new // entry from the start of the GOT. @@ -2066,15 +2384,17 @@ class Output_data_got : public Output_section_data_build return got_offset; } - // Reserve a slot in the GOT. + // Replace GOT entry I with a new constant. void - reserve_slot(unsigned int i) - { this->free_list_.remove(i * size / 8, (i + 1) * size / 8); } + replace_constant(unsigned int i, Valtype constant) + { + this->replace_got_entry(i, Got_entry(constant)); + } // Reserve a slot in the GOT for a local symbol. void - reserve_local(unsigned int i, Sized_relobj* object, - unsigned int sym_index, unsigned int got_type); + reserve_local(unsigned int i, Relobj* object, unsigned int sym_index, + unsigned int got_type); // Reserve a slot in the GOT for a global symbol. void @@ -2090,6 +2410,21 @@ class Output_data_got : public Output_section_data_build do_print_to_mapfile(Mapfile* mapfile) const { mapfile->print_output_data(this, _("** GOT")); } + // Reserve the slot at index I in the GOT. + virtual void + do_reserve_slot(unsigned int i) + { this->free_list_.remove(i * got_size / 8, (i + 1) * got_size / 8); } + + // Return the number of words in the GOT. + unsigned int + num_entries () const + { return this->entries_.size(); } + + // Return the offset into the GOT of GOT entry I. + unsigned int + got_offset(unsigned int i) const + { return i * (got_size / 8); } + private: // This POD class holds a single GOT entry. class Got_entry @@ -2097,18 +2432,20 @@ class Output_data_got : public Output_section_data_build public: // Create a zero entry. Got_entry() - : local_sym_index_(RESERVED_CODE), use_plt_offset_(false) + : local_sym_index_(RESERVED_CODE), use_plt_or_tls_offset_(false) { this->u_.constant = 0; } // Create a global symbol entry. - Got_entry(Symbol* gsym, bool use_plt_offset) - : local_sym_index_(GSYM_CODE), use_plt_offset_(use_plt_offset) + Got_entry(Symbol* gsym, bool use_plt_or_tls_offset) + : local_sym_index_(GSYM_CODE), + use_plt_or_tls_offset_(use_plt_or_tls_offset) { this->u_.gsym = gsym; } // Create a local symbol entry. - Got_entry(Sized_relobj_file* object, - unsigned int local_sym_index, bool use_plt_offset) - : local_sym_index_(local_sym_index), use_plt_offset_(use_plt_offset) + Got_entry(Relobj* object, unsigned int local_sym_index, + bool use_plt_or_tls_offset) + : local_sym_index_(local_sym_index), + use_plt_or_tls_offset_(use_plt_or_tls_offset) { gold_assert(local_sym_index != GSYM_CODE && local_sym_index != CONSTANT_CODE @@ -2120,12 +2457,12 @@ class Output_data_got : public Output_section_data_build // Create a constant entry. The constant is a host value--it will // be swapped, if necessary, when it is written out. explicit Got_entry(Valtype constant) - : local_sym_index_(CONSTANT_CODE), use_plt_offset_(false) + : local_sym_index_(CONSTANT_CODE), use_plt_or_tls_offset_(false) { this->u_.constant = constant; } // Write the GOT entry to an output view. void - write(unsigned char* pov) const; + write(unsigned int got_indx, unsigned char* pov) const; private: enum @@ -2138,7 +2475,7 @@ class Output_data_got : public Output_section_data_build union { // For a local symbol, the object. - Sized_relobj_file* object; + Relobj* object; // For a global symbol, the symbol. Symbol* gsym; // For a constant, the constant. @@ -2148,7 +2485,8 @@ class Output_data_got : public Output_section_data_build // for a global symbol, or CONSTANT_CODE for a constant. unsigned int local_sym_index_ : 31; // Whether to use the PLT offset of the symbol if it has one. - bool use_plt_offset_ : 1; + // For TLS symbols, whether to offset the symbol value. + bool use_plt_or_tls_offset_ : 1; }; typedef std::vector Got_entries; @@ -2161,20 +2499,19 @@ class Output_data_got : public Output_section_data_build unsigned int add_got_entry_pair(Got_entry got_entry_1, Got_entry got_entry_2); - // Return the offset into the GOT of GOT entry I. - unsigned int - got_offset(unsigned int i) const - { return i * (size / 8); } + // Replace GOT entry I with a new value. + void + replace_got_entry(unsigned int i, Got_entry got_entry); // Return the offset into the GOT of the last entry added. unsigned int last_got_offset() const - { return this->got_offset(this->entries_.size() - 1); } + { return this->got_offset(this->num_entries() - 1); } // Set the size of the section. void set_got_size() - { this->set_current_data_size(this->got_offset(this->entries_.size())); } + { this->set_current_data_size(this->got_offset(this->num_entries())); } // The list of GOT entries. Got_entries entries_; @@ -2209,7 +2546,7 @@ class Output_data_dynamic : public Output_section_data // plus a constant offset. void add_section_plus_offset(elfcpp::DT tag, const Output_data* od, - unsigned int offset) + unsigned int offset) { this->add_entry(Dynamic_entry(tag, od, offset)); } // Add a new dynamic entry with the size of output data. @@ -2417,17 +2754,26 @@ class Output_relaxed_input_section : public Output_section_data_build uint64_t addralign) : Output_section_data_build(addralign), relobj_(relobj), shndx_(shndx) { } - + // Return the Relobj of this relaxed input section. Relobj* relobj() const { return this->relobj_; } - + // Return the section index of this relaxed input section. unsigned int shndx() const { return this->shndx_; } + protected: + void + set_relobj(Relobj* relobj) + { this->relobj_ = relobj; } + + void + set_shndx(unsigned int shndx) + { this->shndx_ = shndx; } + private: Relobj* relobj_; unsigned int shndx_; @@ -2463,7 +2809,7 @@ class Merge_section_properties h = (h ^ static_cast(this->addralign_)) * prime; return h; } - + // Functors for associative containers. struct equal_to { @@ -2520,7 +2866,7 @@ class Output_section_lookup_maps // A cleared map is valid. this->is_valid_ = true; } - + // Find a merge section by merge section properties. Return NULL if none // is found. Output_merge_base* @@ -2553,7 +2899,7 @@ class Output_section_lookup_maps this->merge_sections_by_properties_.insert(value); gold_assert(result.second); } - + // Add a mapping from a merged input section in OBJECT with index SHNDX // to a merge output section pointed by POMB. void @@ -2615,6 +2961,103 @@ class Output_section_lookup_maps Relaxed_input_sections_by_id relaxed_input_sections_by_id_; }; +// This abstract base class defines the interface for the +// types of methods used to fill free space left in an output +// section during an incremental link. These methods are used +// to insert dummy compilation units into debug info so that +// debug info consumers can scan the debug info serially. + +class Output_fill +{ + public: + Output_fill() + : is_big_endian_(parameters->target().is_big_endian()) + { } + + virtual + ~Output_fill() + { } + + // Return the smallest size chunk of free space that can be + // filled with a dummy compilation unit. + size_t + minimum_hole_size() const + { return this->do_minimum_hole_size(); } + + // Write a fill pattern of length LEN at offset OFF in the file. + void + write(Output_file* of, off_t off, size_t len) const + { this->do_write(of, off, len); } + + protected: + virtual size_t + do_minimum_hole_size() const = 0; + + virtual void + do_write(Output_file* of, off_t off, size_t len) const = 0; + + bool + is_big_endian() const + { return this->is_big_endian_; } + + private: + bool is_big_endian_; +}; + +// Fill method that introduces a dummy compilation unit in +// a .debug_info or .debug_types section. + +class Output_fill_debug_info : public Output_fill +{ + public: + Output_fill_debug_info(bool is_debug_types) + : is_debug_types_(is_debug_types) + { } + + protected: + virtual size_t + do_minimum_hole_size() const; + + virtual void + do_write(Output_file* of, off_t off, size_t len) const; + + private: + // Version of the header. + static const int version = 4; + // True if this is a .debug_types section. + bool is_debug_types_; +}; + +// Fill method that introduces a dummy compilation unit in +// a .debug_line section. + +class Output_fill_debug_line : public Output_fill +{ + public: + Output_fill_debug_line() + { } + + protected: + virtual size_t + do_minimum_hole_size() const; + + virtual void + do_write(Output_file* of, off_t off, size_t len) const; + + private: + // Version of the header. We write a DWARF-3 header because it's smaller + // and many tools have not yet been updated to understand the DWARF-4 header. + static const int version = 3; + // Length of the portion of the header that follows the header_length + // field. This includes the following fields: + // minimum_instruction_length, default_is_stmt, line_base, line_range, + // opcode_base, standard_opcode_lengths[], include_directories, filenames. + // The standard_opcode_lengths array is 12 bytes long, and the + // include_directories and filenames fields each contain only a single + // null byte. + static const size_t header_length = 19; +}; + // An output section. We don't expect to have too many output // sections, so we don't bother to do a template on the size. @@ -2635,7 +3078,7 @@ class Output_section : public Output_data template off_t add_input_section(Layout* layout, Sized_relobj_file* object, - unsigned int shndx, const char* name, + unsigned int shndx, const char* name, const elfcpp::Shdr& shdr, unsigned int reloc_shndx, bool have_sections_script); @@ -2665,6 +3108,11 @@ class Output_section : public Output_data flags() const { return this->flags_; } + typedef std::map Section_layout_order; + + void + update_section_layout(const Section_layout_order* order_map); + // Update the output section flags based on input section flags. void update_flags_for_input_section(elfcpp::Elf_Xword flags); @@ -2788,6 +3236,13 @@ class Output_section : public Output_data set_addralign(uint64_t v) { this->addralign_ = v; } + void + checkpoint_set_addralign(uint64_t val) + { + if (this->checkpoint_ != NULL) + this->checkpoint_->set_addralign(val); + } + // Whether the output section index has been set. bool has_out_shndx() const @@ -2845,6 +3300,10 @@ class Output_section : public Output_data this->dynsym_index_ = index; } + // Sort the attached input sections. + void + sort_attached_input_sections(); + // Return whether the input sections sections attachd to this output // section may require sorting. This is used to handle constructor // priorities compatibly with GNU ld. @@ -2956,6 +3415,28 @@ class Output_section : public Output_data requires_postprocessing() const { return this->requires_postprocessing_; } + bool + is_unique_segment() const + { return this->is_unique_segment_; } + + void + set_is_unique_segment() + { this->is_unique_segment_ = true; } + + uint64_t extra_segment_flags() const + { return this->extra_segment_flags_; } + + void + set_extra_segment_flags(uint64_t flags) + { this->extra_segment_flags_ = flags; } + + uint64_t segment_alignment() const + { return this->segment_alignment_; } + + void + set_segment_alignment(uint64_t align) + { this->segment_alignment_ = align; } + // If a section requires postprocessing, return the buffer to use. unsigned char* postprocessing_buffer() const @@ -3135,7 +3616,7 @@ class Output_section : public Output_data this->p2align_ = ffsll(static_cast(addralign)); } } - + // Return the current required size, without finalization. off_t current_data_size() const; @@ -3158,13 +3639,13 @@ class Output_section : public Output_data // parameters. bool is_merge_section(bool is_string, uint64_t entsize, - uint64_t addralign) const + uint64_t addralign) const { return (this->shndx_ == (is_string ? MERGE_STRING_SECTION_CODE : MERGE_DATA_SECTION_CODE) && this->u1_.entsize == entsize - && this->addralign() == addralign); + && this->addralign() == addralign); } // Return whether this is a merge section for some input section. @@ -3203,7 +3684,7 @@ class Output_section : public Output_data gold_assert(!this->is_input_section()); return this->u2_.posd; } - + // For a merge section, return the Output_merge_base pointer. Output_merge_base* output_merge_base() const @@ -3225,8 +3706,8 @@ class Output_section : public Output_data set_output_section(Output_section* os) { gold_assert(!this->is_input_section()); - Output_section_data* posd = - this->is_relaxed_input_section() ? this->u2_.poris : this->u2_.posd; + Output_section_data* posd = + this->is_relaxed_input_section() ? this->u2_.poris : this->u2_.posd; posd->set_output_section(os); } @@ -3387,7 +3868,7 @@ class Output_section : public Output_data // with index SHNDX. Return NULL if none is found. const Output_relaxed_input_section* find_relaxed_input_section(const Relobj* object, unsigned int shndx) const; - + // Whether section offsets need adjustment due to relaxation. bool section_offsets_need_adjustment() const @@ -3398,6 +3879,11 @@ class Output_section : public Output_data set_section_offsets_need_adjustment() { this->section_offsets_need_adjustment_ = true; } + // Set section_offsets_need_adjustment to be false. + void + clear_section_offsets_need_adjustment() + { this->section_offsets_need_adjustment_ = false; } + // Adjust section offsets of input sections in this. This is // requires if relaxation caused some input sections to change sizes. void @@ -3427,6 +3913,21 @@ class Output_section : public Output_data has_fixed_layout() const { return this->has_fixed_layout_; } + // Set flag to allow patch space for this section. Used for full + // incremental links. + void + set_is_patch_space_allowed() + { this->is_patch_space_allowed_ = true; } + + // Set a fill method to use for free space left in the output section + // during incremental links. + void + set_free_space_fill(Output_fill* free_space_fill) + { + this->free_space_fill_ = free_space_fill; + this->free_list_.set_min_hole_size(free_space_fill->minimum_hole_size()); + } + // Reserve space within the fixed layout for the section. Used for // incremental update links. void @@ -3437,6 +3938,17 @@ class Output_section : public Output_data off_t allocate(off_t len, uint64_t addralign); + typedef std::vector Input_section_list; + + // Allow access to the input sections. + const Input_section_list& + input_sections() const + { return this->input_sections_; } + + Input_section_list& + input_sections() + { return this->input_sections_; } + protected: // Return the output section--i.e., the object itself. Output_section* @@ -3559,13 +4071,6 @@ class Output_section : public Output_data void write_to_postprocessing_buffer(); - typedef std::vector Input_section_list; - - // Allow a child class to access the input sections. - const Input_section_list& - input_sections() const - { return this->input_sections_; } - // Whether this always keeps an input section list bool always_keeps_input_sections() const @@ -3604,6 +4109,10 @@ class Output_section : public Output_data addralign() const { return this->addralign_; } + void + set_addralign(uint64_t val) + { this->addralign_ = val; } + // Return the section flags. elfcpp::Elf_Xword flags() const @@ -3691,6 +4200,15 @@ class Output_section : public Output_data const Input_section_sort_entry&) const; }; + // This is the sort comparison function for .text to sort sections with + // prefixes .text.{unlikely,exit,startup,hot} before other sections. + struct Input_section_sort_section_name_special_ordering_compare + { + bool + operator()(const Input_section_sort_entry&, + const Input_section_sort_entry&) const; + }; + // Fill data. This is used to fill in data between input sections. // It is also used for data statements (BYTE, WORD, etc.) in linker // scripts. When we have to keep track of the input sections, we @@ -3748,10 +4266,6 @@ class Output_section : public Output_data add_output_merge_section(Output_section_data* posd, bool is_string, uint64_t entsize); - // Sort the attached input sections. - void - sort_attached_input_sections(); - // Find the merge section into which an input section with index SHNDX in // OBJECT has been added. Return NULL if none found. Output_section_data* @@ -3890,9 +4404,19 @@ class Output_section : public Output_data bool always_keeps_input_sections_ : 1; // Whether this section has a fixed layout, for incremental update links. bool has_fixed_layout_ : 1; + // True if we can add patch space to this section. + bool is_patch_space_allowed_ : 1; + // True if this output section goes into a unique segment. + bool is_unique_segment_ : 1; // For SHT_TLS sections, the offset of this section relative to the base // of the TLS segment. uint64_t tls_offset_; + // Additional segment flags, specified via linker plugin, when mapping some + // input sections to unique segments. + uint64_t extra_segment_flags_; + // Segment alignment specified via linker plugin, when mapping some + // input sections to unique segments. + uint64_t segment_alignment_; // Saved checkpoint. Checkpoint_output_section* checkpoint_; // Fast lookup maps for merged and relaxed input sections. @@ -3900,6 +4424,10 @@ class Output_section : public Output_data // List of available regions within the section, for incremental // update links. Free_list free_list_; + // Method for filling chunks of free space. + Output_fill* free_space_fill_; + // Amount added as patch space for incremental linking. + off_t patch_space_; }; // An output segment. PT_LOAD segments are built from collections of @@ -3964,6 +4492,16 @@ class Output_segment set_is_large_data_segment() { this->is_large_data_segment_ = true; } + bool + is_unique_segment() const + { return this->is_unique_segment_; } + + // Mark segment as unique, happens when linker plugins request that + // certain input sections be mapped to unique segments. + void + set_is_unique_segment() + { this->is_unique_segment_ = true; } + // Return the maximum alignment of the Output_data. uint64_t maximum_alignment(); @@ -3999,9 +4537,17 @@ class Output_segment bool has_dynamic_reloc() const; + // Return the first section. + Output_section* + first_section() const; + // Return the address of the first section. uint64_t - first_section_load_address() const; + first_section_load_address() const + { + const Output_section* os = this->first_section(); + return os->has_load_address() ? os->load_address() : os->address(); + } // Return whether the addresses have been set already. bool @@ -4103,8 +4649,8 @@ class Output_segment // Set the section addresses in an Output_data_list. uint64_t set_section_list_addresses(Layout*, bool reset, Output_data_list*, - uint64_t addr, off_t* poff, unsigned int* pshndx, - bool* in_tls); + uint64_t addr, off_t* poff, unsigned int* pshndx, + bool* in_tls); // Return the number of Output_sections in an Output_data_list. unsigned int @@ -4140,7 +4686,7 @@ class Output_segment // NOTE: We want to use the copy constructor. Currently, shallow copy // works for us so we do not need to write our own copy constructor. - + // The list of output data attached to this segment. Output_data_list output_lists_[ORDER_MAX]; // The segment virtual address. @@ -4174,6 +4720,8 @@ class Output_segment bool are_addresses_set_ : 1; // Whether this segment holds large data sections. bool is_large_data_segment_ : 1; + // Whether this was marked as a unique segment via a linker plugin. + bool is_unique_segment_ : 1; }; // This class represents the output file. @@ -4235,7 +4783,7 @@ class Output_file get_output_view(off_t start, size_t size) { gold_assert(start >= 0 - && start + static_cast(size) <= this->file_size_); + && start + static_cast(size) <= this->file_size_); return this->base_ + start; }