* layout.cc (Layout::make_output_section): Call

	Target::new_output_section.
	(Layout::attach_allocated_section_to_segment): Put large section
	sections in a separate load segment with the large segment flag
	set.
	(Layout::segment_precedes): Sort large data segments after other
	load segments.
	(align_file_offset): New static function.
	(Layout::set_segment_offsets): Use align_file_offset.
	* output.h (class Output_section): Add is_small_section_ and
	is_large_section_ fields.
	(Output_section::is_small_section): New function.
	(Output_section::set_is_small_section):  New function.
	(Output_section::is_large_section): New function.
	(Output_section::set_is_large_section): New function.
	(Output_section::is_large_data_section): New function.
	(class Output_segment): Add is_large_data_segment_ field.
	(Output_segment::is_large_data_segment): New function.
	(Output_segment::set_is_large_data_segment): New function.
	* output.cc (Output_section::Output_section): Initialize new
	fields.
	(Output_segment::Output_segment): Likewise.
	(Output_segment::add_output_section): Add assertion that large
	data sections always go in large data segments.  Force small data
	sections to the end of the list of data sections.  Force small BSS
	sections to the start of the list of BSS sections.  For large BSS
	sections to the end of the list of BSS sections.
	* symtab.h (class Symbol): Declare is_common_shndx.
	(Symbol::is_defined): Check Symbol::is_common_shndx.
	(Symbol::is_common): Likewise.
	(class Symbol_table): Define enum Commons_section_type.  Update
	declarations.  Add small_commons_ and large_commons_ fields.
	* symtab.cc (Symbol::is_common_shndx): New function.
	(Symbol_table::Symbol_table): Initialize new fields.
	(Symbol_table::add_from_object): Put small and large common
	symbols in the right list.
	(Symbol_table::sized_finalized_symbol): Check
	Symbol::is_common_shndx.
	(Symbol_table::sized_write_globals): Likewise.
	* common.cc (Symbol_table::do_allocate_commons): Allocate new
	common symbol lists.  Don't call do_allocate_commons_list if the
	list is empty.
	(Symbol_table::do_allocate_commons_list): Remove is_tls
	parameter.  Add comons_section_type parameter.  Change all
	callers.  Handle small and large common symbols.
	* object.cc (Sized_relobj::do_finalize_local_symbols): Check
	Symbol::is_common_shndx.
	* resolve.cc (symbol_to_bits): Likewise.
	* target.h (Target::small_common_shndx): New function.
	(Target::small_common_section_flags): New function.
	(Target::large_common_shndx): New function.
	(Target::large_common_section_flags): New function.
	(Target::new_output_section): New function.
	(Target::Target_info): Add small_common_shndx, large_common_shndx,
	small_common_section_flags, and large_common_section_flags
	fields.
	(Target::do_new_output_section): New virtual function.
	* arm.cc (Target_arm::arm_info): Initialize new fields.
	* i386.cc (Target_i386::i386_info): Likewise.
	* powerpc.cc (Target_powerpc::powerpc_info) [all versions]:
	Likewise.
	* sparc.c (Target_sparc::sparc_info) [all versions]: Likewise.
	* x86_64.cc (Target_x86_64::x86_64_info): Likewise.
	(Target_x86_64::do_new_output_section): New function.
	* configure.ac: Define conditional MCMODEL_MEDIUM.
	* testsuite/Makefile.am (check_PROGRAMS): Add large.
	(large_SOURCES, large_CFLAGS, large_DEPENDENCIES): Define.
	(large_LDFLAGS): Define.
	* testsuite/large.c: New file.
	* testsuite/testfile.cc (Target_test::test_target_info):
	Initialize new fields.
	* configure, testsuite/Makefile.in: Rebuild.

1 files changed, 68 insertions, 1 deletions

diff --git a/gold/output.cc b/gold/output.cc
index b532136..911a49a 100644
--- a/gold/output.cc
+++ b/gold/output.cc
@@ -1764,6 +1764,8 @@ Output_section::Output_section(const char* name, elfcpp::Elf_Word type,
     attached_input_sections_are_sorted_(false),
     is_relro_(false),
     is_relro_local_(false),
+    is_small_section_(false),
+    is_large_section_(false),
     tls_offset_(0)
 {
   // An unallocated section has no address.  Forcing this means that
@@ -2613,7 +2615,8 @@ Output_segment::Output_segment(elfcpp::Elf_Word type, elfcpp::Elf_Word flags)
     type_(type),
     flags_(flags),
     is_max_align_known_(false),
-    are_addresses_set_(false)
+    are_addresses_set_(false),
+    is_large_data_segment_(false)
 {
 }
 
@@ -2625,6 +2628,7 @@ Output_segment::add_output_section(Output_section* os,
 {
   gold_assert((os->flags() & elfcpp::SHF_ALLOC) != 0);
   gold_assert(!this->is_max_align_known_);
+  gold_assert(os->is_large_data_section() == this->is_large_data_segment());
 
   // Update the segment flags.
   this->flags_ |= seg_flags;
@@ -2732,6 +2736,69 @@ Output_segment::add_output_section(Output_section* os,
       return;
     }
 
+  // Small data sections go at the end of the list of data sections.
+  // If OS is not small, and there are small sections, we have to
+  // insert it before the first small section.
+  if (os->type() != elfcpp::SHT_NOBITS
+      && !os->is_small_section()
+      && !pdl->empty()
+      && pdl->back()->is_section()
+      && pdl->back()->output_section()->is_small_section())
+    {
+      for (Output_segment::Output_data_list::iterator p = pdl->begin();
+	   p != pdl->end();
+	   ++p)
+	{
+	  if ((*p)->is_section()
+	      && (*p)->output_section()->is_small_section())
+	    {
+	      pdl->insert(p, os);
+	      return;
+	    }
+	}
+      gold_unreachable();
+    }
+
+  // A small BSS section goes at the start of the BSS sections, after
+  // other small BSS sections.
+  if (os->type() == elfcpp::SHT_NOBITS && os->is_small_section())
+    {
+      for (Output_segment::Output_data_list::iterator p = pdl->begin();
+	   p != pdl->end();
+	   ++p)
+	{
+	  if (!(*p)->is_section()
+	      || !(*p)->output_section()->is_small_section())
+	    {
+	      pdl->insert(p, os);
+	      return;
+	    }
+	}
+    }
+
+  // A large BSS section goes at the end of the BSS sections, which
+  // means that one that is not large must come before the first large
+  // one.
+  if (os->type() == elfcpp::SHT_NOBITS
+      && !os->is_large_section()
+      && !pdl->empty()
+      && pdl->back()->is_section()
+      && pdl->back()->output_section()->is_large_section())
+    {
+      for (Output_segment::Output_data_list::iterator p = pdl->begin();
+	   p != pdl->end();
+	   ++p)
+	{
+	  if ((*p)->is_section()
+	      && (*p)->output_section()->is_large_section())
+	    {
+	      pdl->insert(p, os);
+	      return;
+	    }
+	}
+      gold_unreachable();
+    }
+
   pdl->push_back(os);
 }