* 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, 26 insertions, 10 deletions

diff --git a/gold/symtab.cc b/gold/symtab.cc
index 3d179ef..daf9daf 100644
--- a/gold/symtab.cc
+++ b/gold/symtab.cc
@@ -280,6 +280,16 @@ Sized_symbol<size>::init_undefined(const char* name, const char* version,
   this->symsize_ = 0;
 }
 
+// Return true if SHNDX represents a common symbol.
+
+bool
+Symbol::is_common_shndx(unsigned int shndx)
+{
+  return (shndx == elfcpp::SHN_COMMON
+	  || shndx == parameters->target().small_common_shndx()
+	  || shndx == parameters->target().large_common_shndx());
+}
+
 // Allocate a common symbol.
 
 template<int size>
@@ -477,7 +487,8 @@ Symbol::set_output_section(Output_section* os)
 Symbol_table::Symbol_table(unsigned int count,
                            const Version_script_info& version_script)
   : saw_undefined_(0), offset_(0), table_(count), namepool_(),
-    forwarders_(), commons_(), tls_commons_(), forced_locals_(), warnings_(),
+    forwarders_(), commons_(), tls_commons_(), small_commons_(),
+    large_commons_(), forced_locals_(), warnings_(),
     version_script_(version_script), gc_(NULL)
 {
   namepool_.reserve(count);
@@ -975,10 +986,16 @@ Symbol_table::add_from_object(Object* object,
   // allocation.
   if (!was_common && ret->is_common())
     {
-      if (ret->type() != elfcpp::STT_TLS)
-	this->commons_.push_back(ret);
-      else
+      if (ret->type() == elfcpp::STT_TLS)
 	this->tls_commons_.push_back(ret);
+      else if (!is_ordinary
+	       && st_shndx == parameters->target().small_common_shndx())
+	this->small_commons_.push_back(ret);
+      else if (!is_ordinary
+	       && st_shndx == parameters->target().large_common_shndx())
+	this->large_commons_.push_back(ret);
+      else
+	this->commons_.push_back(ret);
     }
 
   // If we're not doing a relocatable link, then any symbol with
@@ -2370,10 +2387,9 @@ Symbol_table::sized_finalize_symbol(Symbol* unsized_sym)
 	bool is_ordinary;
 	unsigned int shndx = sym->shndx(&is_ordinary);
 
-	// FIXME: We need some target specific support here.
 	if (!is_ordinary
 	    && shndx != elfcpp::SHN_ABS
-	    && shndx != elfcpp::SHN_COMMON)
+	    && !Symbol::is_common_shndx(shndx))
 	  {
 	    gold_error(_("%s: unsupported symbol section 0x%x"),
 		       sym->demangled_name().c_str(), shndx);
@@ -2394,7 +2410,8 @@ Symbol_table::sized_finalize_symbol(Symbol* unsized_sym)
 	else if (shndx == elfcpp::SHN_UNDEF)
 	  value = 0;
 	else if (!is_ordinary
-		 && (shndx == elfcpp::SHN_ABS || shndx == elfcpp::SHN_COMMON))
+		 && (shndx == elfcpp::SHN_ABS
+		     || Symbol::is_common_shndx(shndx)))
 	  value = sym->value();
 	else
 	  {
@@ -2597,10 +2614,9 @@ Symbol_table::sized_write_globals(const Stringpool* sympool,
 	    bool is_ordinary;
 	    unsigned int in_shndx = sym->shndx(&is_ordinary);
 
-	    // FIXME: We need some target specific support here.
 	    if (!is_ordinary
 		&& in_shndx != elfcpp::SHN_ABS
-		&& in_shndx != elfcpp::SHN_COMMON)
+		&& !Symbol::is_common_shndx(in_shndx))
 	      {
 		gold_error(_("%s: unsupported symbol section 0x%x"),
 			   sym->demangled_name().c_str(), in_shndx);
@@ -2620,7 +2636,7 @@ Symbol_table::sized_write_globals(const Stringpool* sympool,
 		else if (in_shndx == elfcpp::SHN_UNDEF
 			 || (!is_ordinary
 			     && (in_shndx == elfcpp::SHN_ABS
-				 || in_shndx == elfcpp::SHN_COMMON)))
+				 || Symbol::is_common_shndx(in_shndx))))
 		  shndx = in_shndx;
 		else
 		  {