* object.cc (Xindex::initialize_symtab_xindex): New function.

	(Xindex::read_symtab_xindex): New function.
	(Xindex::sym_xindex_to_shndx): New function.
	(Sized_relobj::find_symtab): Pick up SHT_SYMTAB_SHNDX section if
	available.
	(Sized_relobj::do_initialize_xindex): New function.
	(Sized_relobj::do_read_symbols): Adjust section links.
	(Sized_relobj::symbol_section_and_value): Add is_ordinary
	parameter.  Change all callers.
	(Sized_relobj::include_section_group): Adjust section links and
	symbol section indexes.
	(Sized_relobj::do_layout): Adjust section links.
	(Sized_relobj::do_count_local_symbols): Adjust section links and
	symbol section indexes.
	(Sized_relobj::do_finalize_local_symbols): Distinguish between
	ordinary and special symbols.
	(Sized_relobj::write_local_symbols): Add symtab_xindex and
	dynsym_xindex parameters.  Change all callers.  Adjust section
	links.  Use SHN_XINDEX when needed.
	(Sized_relobj::get_symbol_location_info): Adjust section links.
	Don't get fooled by special symbols.
	* object.h (class Xindex): Define.
	(class Object): Add xindex_ parameter.  Declare virtual functoin
	do_initialize_xindex.
	(Object::adjust_sym_shndx): New function.
	(Object::set_xindex): New protected function.
	(class Symbol_value): Add is_ordinary_shndx_ field.
	(Symbol_value::Symbol_value): Initialize is_ordinary_shndx_.
	(Symbol_value::value): Assert ordinary section.
	(Symbol_value::initialize_input_to_output_map): Likewise.
	(Symbol_value::set_input_shndx): Add is_ordinary parameter.
	Change all callers.
	(Symbol_value::input_shndx): Add is_ordinary parameter.  Change
	all callers.
	(class Sized_relobj): Update declarations.
	(Sized_relobj::local_symbol_input_shndx): Add is_ordinary
	parameter.  Change all callers.
	(Sized_relobj::adjust_shndx): New function.
	* dynobj.cc (Sized_dynobj::Sized_dynobj): Initialize dynsym_shndx_
	field.
	(Sized_dynobj::find_dynsym_sections): Remove pdynsym_shndx
	parameter.  Change all callers.  Pick up SHT_DYNSYM_SHNDX section
	for SHT_DYNSYM section if available.  Set dynsym_shndx_ field.
	(Sized_dynobj::read_dynsym_section): Adjust section links.
	(Sized_dynobj::read_dynamic): Likewise.
	(Sized_dynobj::do_read_symbols): Use dynsym_shndx_ field.  Adjust
	section links.
	(Sized_dynobj::do_initialize_xindex): New function.
	* dynobj.h (class Sized_dynobj): Add dynsym_shndx_ field.  Declare
	do_initialize_xindex.
	(Sized_dynobj::adjust_shndx): New function.
	* layout.cc (Layout::Layout): Initialize symtab_xindex_ and
	dynsym_xindex_ fields.
	(Layout::finalize): Add a call to set_section_indexes before
	creating the symtab sections.
	(Layout::set_section_indexes): Don't do anything if the section
	already has a section index.
	(Layout::create_symtab_sections): Add shnum parameter.  Change
	caller.  Create .symtab_shndx section if needed.
	(Layout::create_shdrs): Add shstrtab_section parameter.  Change
	caller.
	(Layout::allocated_output_section_count): New function.
	(Layout::create_dynamic_symtab): Create .dynsym_shndx section if
	needed.
	* layout.h (class Layout): Add symtab_xindex_ and dynsym_xindex_
	fields.  Update declarations.
	(Layout::symtab_xindex): New function.
	(Layout::dynsym_xindex): New function.
	(class Write_symbols_task): Add layout_ field.
	(Write_symbols_task::Write_symbols_task): Add layout parameter.
	Change caller.
	* output.cc (Output_section_headers::Output_section_headers): Add
	shstrtab_section parameter.  Change all callers.
	(Output_section_headers::do_sized_write): Store overflow values
	for section count and section string table section index in
	section header zero.
	(Output_file_header::do_sized_write): Check for overflow of
	section count and section string table section index.
	(Output_symtab_xindex::do_write): New function.
	(Output_symtab_xindex::endian_do_write): New function.
	* output.h (class Output_section_headers): Add shstrtab_section_.
	Update declarations.
	(class Output_symtab_xindex): Define.
	(Output_section::has_out_shndx): New function.
	* symtab.cc (Symbol::init_fields): Initialize is_ordinary_shndx_
	field.
	(Symbol::init_base): Add st_shndx and is_ordinary parameters.
	Change all callers.
	(Sized_symbol::init): Likewise.
	(Symbol::output_section): Check for ordinary symbol.
	(Symbol_table::add_from_object): Remove orig_sym parameter.  Add
	st_shndx, is_ordinary, and orig_st_shndx parameters.  Change all
	callers.
	(Symbol_table::add_from_relobj): Add symndx_offset parameter.
	Change all callers.  Simplify handling of symbols from sections
	not included in the link.
	(Symbol_table::add_from_dynobj): Handle ordinary symbol
	distinction.
	(Weak_alias_sorter::operator()): Assert that symbols are
	ordinary.
	(Symbol_table::sized_finalize_symbol): Handle ordinary symbol
	distinction.
	(Symbol_table::write_globals): Add symtab_xindex and dynsym_xindex
	parameters.  Change all callers.
	(Symbol_table::sized_write_globals): Likewise.  Handle ordinary
	symbol distinction.  Use SHN_XINDEX when needed.
	(Symbol_table::write_section_symbol): Add symtab_xindex
	parameter.  Change all callers.
	(Symbol_table::sized_write_section_symbol): Likewise.  Use
	SHN_XINDEX when needed.
	* symtab.h (class Symbol): Add is_ordinary_shndx_ field.  Update
	declarations.
	(Symbol::shndx): Add is_ordinary parameter.  Change all callers.
	(Symbol::is_defined): Check is_ordinary.
	(Symbol::is_undefined, Symbol::is_weak_undefined): Likewise.
	(Symbol::is_absolute, Symbol::is_common): Likewise.
	(class Sized_symbol): Update declarations.
	(class Symbol_table): Update declarations.
	* resolve.cc (Symbol::override_base): Add st_shndx and is_ordinary
	parameters.  Change all callers.
	(Sized_symbol::override): Likewise.
	(Symbol_table::override): Likewise.
	(symbol_to_bits): Add is_ordinary parameter.  Change all callers.
	(Symbol_table::resolve): Remove orig_sym parameter.  Add st_shndx,
	is_ordinary, and orig_st_shndx parameters.  Change all callers.
	* copy-relocs.cc (Copy_relocs::emit_copy_reloc): Require symbol
	to be in an ordinary section.
	* dwarf_reader.cc (Sized_dwarf_line_info::symbol_section): Add
	object and is_ordinary parameters.  Change all callers.
	(Sized_dwarf_line_info::read_relocs): Add object parameter.
	Change all callers.  Don't add undefined or non-ordinary symbols
	to reloc_map_.
	(Sized_dwarf_line_info::read_line_mappings): Add object parameter.
	Change all callers.
	* dwarf_reader.h (class Sized_dwarf_line_info): Update
	declarations.
	* ehframe.cc (Eh_frame::read_fde): Check for ordinary symbol.
	* reloc.cc (Sized_relobj::do_read_relocs): Adjust section links.
	(Sized_relobj::relocate_sections): Likewise.
	* target-reloc.h (scan_relocs): Adjust section symbol index.
	(scan_relocatable_relocs): Likewise.
	* i386.cc (Scan::local): Check for ordinary symbols.
	* sparc.cc (Scan::local): Likewise.
	* x86_64.cc (Scan::local): Likewise.
	* testsuite/binary_unittest.cc (Sized_binary_test): Update calls
	to symbol_section_and_value.
	* testsuite/many_sections_test.cc: New file.
	* testsuite/Makefile.am (BUILT_SOURCES): Define.
	(check_PROGRAMS): Add many_sections_test.
	(many_sections_test_SOURCES): Define.
	(many_sections_test_DEPENDENCIES): Define.
	(many_sections_test_LDFLAGS): Define.
	(BUILT_SOURCES): Add many_sections_define.h.
	(many_sections_define.h): New target.
	(BUILT_SOURCES): Add many_sections_check.h.
	(many_sections_check.h): New target.
	(check_PROGRAMS): Add many_sections_r_test.
	(many_sections_r_test_SOURCES): Define.
	(many_sections_r_test_DEPENDENCIES): Define.
	(many_sections_r_test_LDFLAGS): Define.
	(many_sections_r_test_LDADD): Define.
	(many_sections_r_test.o): New target.
	* testsuite/Makefile.in: Rebuild.

1 files changed, 64 insertions, 7 deletions

diff --git a/gold/output.cc b/gold/output.cc
index 09b7312..ded6d42 100644
--- a/gold/output.cc
+++ b/gold/output.cc
@@ -87,12 +87,14 @@ Output_section_headers::Output_section_headers(
     const Layout::Segment_list* segment_list,
     const Layout::Section_list* section_list,
     const Layout::Section_list* unattached_section_list,
-    const Stringpool* secnamepool)
+    const Stringpool* secnamepool,
+    const Output_section* shstrtab_section)
   : layout_(layout),
     segment_list_(segment_list),
     section_list_(section_list),
     unattached_section_list_(unattached_section_list),
-    secnamepool_(secnamepool)
+    secnamepool_(secnamepool),
+    shstrtab_section_(shstrtab_section)
 {
   // Count all the sections.  Start with 1 for the null section.
   off_t count = 1;
@@ -175,8 +177,20 @@ Output_section_headers::do_sized_write(Output_file* of)
     oshdr.put_sh_flags(0);
     oshdr.put_sh_addr(0);
     oshdr.put_sh_offset(0);
-    oshdr.put_sh_size(0);
-    oshdr.put_sh_link(0);
+
+    size_t section_count = (this->data_size()
+			    / elfcpp::Elf_sizes<size>::shdr_size);
+    if (section_count < elfcpp::SHN_LORESERVE)
+      oshdr.put_sh_size(0);
+    else
+      oshdr.put_sh_size(section_count);
+
+    unsigned int shstrndx = this->shstrtab_section_->out_shndx();
+    if (shstrndx < elfcpp::SHN_LORESERVE)
+      oshdr.put_sh_link(0);
+    else
+      oshdr.put_sh_link(shstrndx);
+
     oshdr.put_sh_info(0);
     oshdr.put_sh_addralign(0);
     oshdr.put_sh_entsize(0);
@@ -447,9 +461,20 @@ Output_file_header::do_sized_write(Output_file* of)
     }
 
   oehdr.put_e_shentsize(elfcpp::Elf_sizes<size>::shdr_size);
-  oehdr.put_e_shnum(this->section_header_->data_size()
-		     / elfcpp::Elf_sizes<size>::shdr_size);
-  oehdr.put_e_shstrndx(this->shstrtab_->out_shndx());
+  size_t section_count = (this->section_header_->data_size()
+			  / elfcpp::Elf_sizes<size>::shdr_size);
+
+  if (section_count < elfcpp::SHN_LORESERVE)
+    oehdr.put_e_shnum(this->section_header_->data_size()
+		      / elfcpp::Elf_sizes<size>::shdr_size);
+  else
+    oehdr.put_e_shnum(0);
+
+  unsigned int shstrndx = this->shstrtab_->out_shndx();
+  if (shstrndx < elfcpp::SHN_LORESERVE)
+    oehdr.put_e_shstrndx(this->shstrtab_->out_shndx());
+  else
+    oehdr.put_e_shstrndx(elfcpp::SHN_XINDEX);
 
   of->write_output_view(0, ehdr_size, view);
 }
@@ -1478,6 +1503,38 @@ Output_data_dynamic::sized_write(Output_file* of)
   this->entries_.clear();
 }
 
+// Class Output_symtab_xindex.
+
+void
+Output_symtab_xindex::do_write(Output_file* of)
+{
+  const off_t offset = this->offset();
+  const off_t oview_size = this->data_size();
+  unsigned char* const oview = of->get_output_view(offset, oview_size);
+
+  memset(oview, 0, oview_size);
+
+  if (parameters->target().is_big_endian())
+    this->endian_do_write<true>(oview);
+  else
+    this->endian_do_write<false>(oview);
+
+  of->write_output_view(offset, oview_size, oview);
+
+  // We no longer need the data.
+  this->entries_.clear();
+}
+
+template<bool big_endian>
+void
+Output_symtab_xindex::endian_do_write(unsigned char* const oview)
+{
+  for (Xindex_entries::const_iterator p = this->entries_.begin();
+       p != this->entries_.end();
+       ++p)
+    elfcpp::Swap<32, big_endian>::writeval(oview + p->first * 4, p->second);
+}
+
 // Output_section::Input_section methods.
 
 // Return the data size.  For an input section we store the size here.