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Fix problems emitting MIPS .reginfo section.
gold/ * mips.cc (Mips_relobj::Mips_relobj): Initialize has_reginfo_section_. (Mips_relobj::has_reginfo_section_): New data member. (Mips_relobj::has_reginfo_section): New method. (class Mips_output_section_reginfo): Change base class to Output_section_data, and set masks of the output .reginfo section in constructor. (Mips_output_section_reginfo::as_mips_output_section_reginfo): Remove. (Mips_output_section_reginfo::set_masks): Likewise. (Mips_output_section_reginfo::set_final_data_size): Likewise. (Mips_output_section_reginfo::do_print_to_mapfile): New method. (Target_mips::do_make_output_section): Remove. (Mips_relobj::do_read_symbols): Set has_reginfo_section_ to true if the object contains a .reginfo section. (Target_mips::do_finalize_sections): Create a .reginfo output section if needed.
This commit is contained in:
Vladimir Radosavljevic
Cary Coutant
parent
695bfa52cc
commit
82e498727a
@ -1,3 +1,23 @@
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2016-06-10 Vladimir Radosavljevic <Vladimir.Radosavljevic@imgtec.com>
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* mips.cc (Mips_relobj::Mips_relobj): Initialize
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has_reginfo_section_.
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(Mips_relobj::has_reginfo_section_): New data member.
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(Mips_relobj::has_reginfo_section): New method.
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(class Mips_output_section_reginfo): Change base class to
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Output_section_data, and set masks of the output .reginfo section
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in constructor.
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(Mips_output_section_reginfo::as_mips_output_section_reginfo):
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Remove.
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(Mips_output_section_reginfo::set_masks): Likewise.
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(Mips_output_section_reginfo::set_final_data_size): Likewise.
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(Mips_output_section_reginfo::do_print_to_mapfile): New method.
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(Target_mips::do_make_output_section): Remove.
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(Mips_relobj::do_read_symbols): Set has_reginfo_section_ to true
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if the object contains a .reginfo section.
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(Target_mips::do_finalize_sections): Create a .reginfo output
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section if needed.
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2016-06-09 Artemiy Volkov <artemiyv@acm.org>
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* mips.cc (Mips_output_data_got::do_write): Add missing template
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141
gold/mips.cc
141
gold/mips.cc
@ -1544,10 +1544,11 @@ class Mips_relobj : public Sized_relobj_file<size, big_endian>
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processor_specific_flags_(0), local_symbol_is_mips16_(),
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local_symbol_is_micromips_(), mips16_stub_sections_(),
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local_non_16bit_calls_(), local_16bit_calls_(), local_mips16_fn_stubs_(),
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local_mips16_call_stubs_(), gp_(0), got_info_(NULL),
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section_is_mips16_fn_stub_(), section_is_mips16_call_stub_(),
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section_is_mips16_call_fp_stub_(), pdr_shndx_(-1U), gprmask_(0),
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cprmask1_(0), cprmask2_(0), cprmask3_(0), cprmask4_(0)
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local_mips16_call_stubs_(), gp_(0), has_reginfo_section_(false),
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got_info_(NULL), section_is_mips16_fn_stub_(),
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section_is_mips16_call_stub_(), section_is_mips16_call_fp_stub_(),
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pdr_shndx_(-1U), gprmask_(0), cprmask1_(0), cprmask2_(0), cprmask3_(0),
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cprmask4_(0)
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{
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this->is_pic_ = (ehdr.get_e_flags() & elfcpp::EF_MIPS_PIC) != 0;
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this->is_n32_ = elfcpp::abi_n32(ehdr.get_e_flags());
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@ -1783,6 +1784,11 @@ class Mips_relobj : public Sized_relobj_file<size, big_endian>
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void
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discard_mips16_stub_sections(Symbol_table* symtab);
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// Return whether there is a .reginfo section.
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bool
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has_reginfo_section() const
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{ return this->has_reginfo_section_; }
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// Return gprmask from the .reginfo section of this object.
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Valtype
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gprmask() const
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@ -1861,6 +1867,8 @@ class Mips_relobj : public Sized_relobj_file<size, big_endian>
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bool is_pic_ : 1;
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// Whether the object uses N32 ABI.
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bool is_n32_ : 1;
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// Whether the object contains a .reginfo section.
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bool has_reginfo_section_ : 1;
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// The Mips_got_info for this object.
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Mips_got_info<size, big_endian>* got_info_;
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@ -2713,40 +2721,25 @@ class Mips_output_data_mips_stubs : public Output_section_data
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// This class handles Mips .reginfo output section.
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template<int size, bool big_endian>
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class Mips_output_section_reginfo : public Output_section
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class Mips_output_section_reginfo : public Output_section_data
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{
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typedef typename elfcpp::Swap<size, big_endian>::Valtype Valtype;
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public:
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Mips_output_section_reginfo(const char* name, elfcpp::Elf_Word type,
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elfcpp::Elf_Xword flags,
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Target_mips<size, big_endian>* target)
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: Output_section(name, type, flags), target_(target), gprmask_(0),
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cprmask1_(0), cprmask2_(0), cprmask3_(0), cprmask4_(0)
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Mips_output_section_reginfo(Target_mips<size, big_endian>* target,
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Valtype gprmask, Valtype cprmask1,
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Valtype cprmask2, Valtype cprmask3,
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Valtype cprmask4)
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: Output_section_data(24, 4, true), target_(target),
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gprmask_(gprmask), cprmask1_(cprmask1), cprmask2_(cprmask2),
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cprmask3_(cprmask3), cprmask4_(cprmask4)
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{ }
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// Downcast a base pointer to a Mips_output_section_reginfo pointer.
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static Mips_output_section_reginfo<size, big_endian>*
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as_mips_output_section_reginfo(Output_section* os)
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{ return static_cast<Mips_output_section_reginfo<size, big_endian>*>(os); }
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// Set masks of the output .reginfo section.
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void
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set_masks(Valtype gprmask, Valtype cprmask1, Valtype cprmask2,
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Valtype cprmask3, Valtype cprmask4)
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{
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this->gprmask_ = gprmask;
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this->cprmask1_ = cprmask1;
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this->cprmask2_ = cprmask2;
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this->cprmask3_ = cprmask3;
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this->cprmask4_ = cprmask4;
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}
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protected:
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// Set the final data size.
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// Write to a map file.
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void
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set_final_data_size()
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{ this->set_data_size(24); }
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do_print_to_mapfile(Mapfile* mapfile) const
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{ mapfile->print_output_data(this, _(".reginfo")); }
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// Write out reginfo section.
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void
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@ -3545,18 +3538,6 @@ class Target_mips : public Sized_target<size, big_endian>
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const elfcpp::Ehdr<size, !big_endian>&)
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{ gold_unreachable(); }
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// Make an output section.
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Output_section*
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do_make_output_section(const char* name, elfcpp::Elf_Word type,
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elfcpp::Elf_Xword flags)
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{
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if (type == elfcpp::SHT_MIPS_REGINFO)
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return new Mips_output_section_reginfo<size, big_endian>(name, type,
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flags, this);
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else
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return new Output_section(name, type, flags);
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}
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// Adjust ELF file header.
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void
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do_adjust_elf_header(unsigned char* view, int len);
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@ -6400,6 +6381,7 @@ Mips_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd)
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if (shdr.get_sh_type() == elfcpp::SHT_MIPS_REGINFO)
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{
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this->has_reginfo_section_ = true;
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// Read the gp value that was used to create this object. We need the
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// gp value while processing relocs. The .reginfo section is not used
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// in the 64-bit MIPS ELF ABI.
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@ -8609,6 +8591,13 @@ Target_mips<size, big_endian>::do_finalize_sections(Layout* layout,
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}
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}
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Valtype gprmask = 0;
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Valtype cprmask1 = 0;
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Valtype cprmask2 = 0;
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Valtype cprmask3 = 0;
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Valtype cprmask4 = 0;
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bool has_reginfo_section = false;
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// Merge processor-specific flags.
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for (Input_objects::Relobj_iterator p = input_objects->relobj_begin();
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p != input_objects->relobj_end();
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@ -8617,6 +8606,17 @@ Target_mips<size, big_endian>::do_finalize_sections(Layout* layout,
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Mips_relobj<size, big_endian>* relobj =
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Mips_relobj<size, big_endian>::as_mips_relobj(*p);
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// Merge .reginfo contents of input objects.
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if (relobj->has_reginfo_section())
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{
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has_reginfo_section = true;
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gprmask |= relobj->gprmask();
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cprmask1 |= relobj->cprmask1();
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cprmask2 |= relobj->cprmask2();
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cprmask3 |= relobj->cprmask3();
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cprmask4 |= relobj->cprmask4();
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}
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Input_file::Format format = relobj->input_file()->format();
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if (format == Input_file::FORMAT_ELF)
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{
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@ -8663,24 +8663,26 @@ Target_mips<size, big_endian>::do_finalize_sections(Layout* layout,
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this->merge_processor_specific_flags(dynobj->name(), in_flags, true);
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}
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// Merge .reginfo contents of input objects.
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Valtype gprmask = 0;
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Valtype cprmask1 = 0;
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Valtype cprmask2 = 0;
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Valtype cprmask3 = 0;
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Valtype cprmask4 = 0;
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for (Input_objects::Relobj_iterator p = input_objects->relobj_begin();
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p != input_objects->relobj_end();
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++p)
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if (has_reginfo_section && !parameters->options().gc_sections())
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{
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Mips_relobj<size, big_endian>* relobj =
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Mips_relobj<size, big_endian>::as_mips_relobj(*p);
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// Create .reginfo output section.
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Mips_output_section_reginfo<size, big_endian>* reginfo_section =
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new Mips_output_section_reginfo<size, big_endian>(this, gprmask,
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cprmask1, cprmask2,
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cprmask3, cprmask4);
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gprmask |= relobj->gprmask();
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cprmask1 |= relobj->cprmask1();
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cprmask2 |= relobj->cprmask2();
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cprmask3 |= relobj->cprmask3();
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cprmask4 |= relobj->cprmask4();
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Output_section* os =
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layout->add_output_section_data(".reginfo", elfcpp::SHT_MIPS_REGINFO,
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elfcpp::SHF_ALLOC, reginfo_section,
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ORDER_INVALID, false);
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if (!parameters->options().relocatable() && os != NULL)
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{
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Output_segment* reginfo_segment =
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layout->make_output_segment(elfcpp::PT_MIPS_REGINFO,
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elfcpp::PF_R);
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reginfo_segment->add_output_section_to_nonload(os, elfcpp::PF_R);
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}
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}
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if (this->plt_ != NULL)
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@ -8751,29 +8753,6 @@ Target_mips<size, big_endian>::do_finalize_sections(Layout* layout,
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if (!parameters->options().relocatable())
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layout->make_output_segment(elfcpp::PT_NULL, 0);
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for (Layout::Section_list::const_iterator p = layout->section_list().begin();
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p != layout->section_list().end();
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++p)
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{
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if ((*p)->type() == elfcpp::SHT_MIPS_REGINFO)
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{
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Mips_output_section_reginfo<size, big_endian>* reginfo =
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Mips_output_section_reginfo<size, big_endian>::
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as_mips_output_section_reginfo(*p);
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reginfo->set_masks(gprmask, cprmask1, cprmask2, cprmask3, cprmask4);
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if (!parameters->options().relocatable())
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{
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Output_segment* reginfo_segment =
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layout->make_output_segment(elfcpp::PT_MIPS_REGINFO,
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elfcpp::PF_R);
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reginfo_segment->add_output_section_to_nonload(reginfo,
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elfcpp::PF_R);
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}
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}
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}
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// Fill in some more dynamic tags.
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// TODO(sasa): Add more dynamic tags.
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const Reloc_section* rel_plt = (this->plt_ == NULL
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