Fix handling of __ehdr_start when it cannot be defined.

2014-05-02  Cary Coutant  <ccoutant@google.com>

	* defstd.cc (in_segment): Define __ehdr_start here...
	* layout.cc (Layout::finalize): ...Instead of here.  Set the
	output segment when known.
	* resolve.cc (Symbol::override_base_with_special): Remember
	the original binding.
	* symtab.cc (Symbol::set_output_segment): New function.
	(Symbol::set_undefined): New function.
	* symtab.h (Symbol::is_weak_undefined): Check original undef
	binding.
	(Symbol::is_strong_undefined): New function.
	(Symbol::set_output_segment): New function.
	(Symbol::set_undefined): New function.
	* target-reloc.h (is_strong_undefined): Remove.
	(issue_undefined_symbol_error): Call Symbol::is_weak_undefined.
	Check for hidden undefs.
	(relocate_section): Call Symbol::is_strong_undefined.

	* testsuite/Makefile.am (ehdr_start_test_1)
	(ehdr_start_test_2, ehdr_start_test_3)
	(ehdr_start_test_4, ehdr_start_test_5): New test cases.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/ehdr_start_def.cc: New source file.
	* testsuite/ehdr_start_test.cc: New source file.
	* testsuite/ehdr_start_test.t: New linker script.
	* testsuite/ehdr_start_test_4.sh: New shell script.

gold/ChangeLog

@@ -1,3 +1,31 @@
+2014-05-02  Cary Coutant  <ccoutant@google.com>
+
+    	* defstd.cc (in_segment): Define __ehdr_start here...
+    	* layout.cc (Layout::finalize): ...Instead of here.  Set the
+    	output segment when known.
+    	* resolve.cc (Symbol::override_base_with_special): Remember
+    	the original binding.
+    	* symtab.cc (Symbol::set_output_segment): New function.
+    	(Symbol::set_undefined): New function.
+    	* symtab.h (Symbol::is_weak_undefined): Check original undef
+    	binding.
+    	(Symbol::is_strong_undefined): New function.
+    	(Symbol::set_output_segment): New function.
+    	(Symbol::set_undefined): New function.
+    	* target-reloc.h (is_strong_undefined): Remove.
+    	(issue_undefined_symbol_error): Call Symbol::is_weak_undefined.
+    	Check for hidden undefs.
+    	(relocate_section): Call Symbol::is_strong_undefined.
+    
+    	* testsuite/Makefile.am (ehdr_start_test_1)
+    	(ehdr_start_test_2, ehdr_start_test_3)
+    	(ehdr_start_test_4, ehdr_start_test_5): New test cases.
+    	* testsuite/Makefile.in: Regenerate.
+    	* testsuite/ehdr_start_def.cc: New source file.
+    	* testsuite/ehdr_start_test.cc: New source file.
+    	* testsuite/ehdr_start_test.t: New linker script.
+    	* testsuite/ehdr_start_test_4.sh: New shell script.
+
 2014-04-23  Cary Coutant  <ccoutant@google.com>
 
 	PR gold/16870

gold/defstd.cc

@@ -140,6 +140,20 @@ const Define_symbol_in_segment in_segment[] =
     Symbol::SEGMENT_START,	// offset_from_base
     true			// only_if_ref
   },
+  {
+    "__ehdr_start",		// name
+    elfcpp::PT_LOAD,		// segment_type
+    elfcpp::PF(0),		// segment_flags_set
+    elfcpp::PF(0),		// segment_flags_clear
+    0,				// value
+    0,				// size
+    elfcpp::STT_NOTYPE,		// type
+    elfcpp::STB_GLOBAL,		// binding
+    elfcpp::STV_HIDDEN,		// visibility
+    0,				// nonvis
+    Symbol::SEGMENT_START,	// offset_from_base
+    true			// only_if_ref
+  },
   {
     "etext",			// name
     elfcpp::PT_LOAD,		// segment_type

gold/layout.cc

@@ -2749,12 +2749,14 @@ Layout::finalize(const Input_objects* input_objects, Symbol_table* symtab,
   // If there is a load segment that contains the file and program headers,
   // provide a symbol __ehdr_start pointing there.
   // A program can use this to examine itself robustly.
-  if (load_seg != NULL)
-    symtab->define_in_output_segment("__ehdr_start", NULL,
-				     Symbol_table::PREDEFINED, load_seg, 0, 0,
-				     elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL,
-				     elfcpp::STV_HIDDEN, 0,
-				     Symbol::SEGMENT_START, true);
+  Symbol *ehdr_start = symtab->lookup("__ehdr_start");
+  if (ehdr_start != NULL && ehdr_start->is_predefined())
+    {
+      if (load_seg != NULL)
+	ehdr_start->set_output_segment(load_seg, Symbol::SEGMENT_START);
+      else
+        ehdr_start->set_undefined();
+    }
 
   // Set the file offsets of all the non-data sections we've seen so
   // far which don't have to wait for the input sections.  We need

gold/resolve.cc

@@ -915,6 +915,10 @@ Symbol::override_base_with_special(const Symbol* from)
   bool same_name = this->name_ == from->name_;
   gold_assert(same_name || this->has_alias());
 
+  // If we are overriding an undef, remember the original binding.
+  if (this->is_undefined())
+    this->set_undef_binding(this->binding_);
+
   this->source_ = from->source_;
   switch (from->source_)
     {

gold/symtab.cc

@@ -527,6 +527,31 @@ Symbol::set_output_section(Output_section* os)
     }
 }
 
+// Set the symbol's output segment.  This is used for pre-defined
+// symbols whose segments aren't known until after layout is done
+// (e.g., __ehdr_start).
+
+void
+Symbol::set_output_segment(Output_segment* os, Segment_offset_base base)
+{
+  gold_assert(this->is_predefined_);
+  this->source_ = IN_OUTPUT_SEGMENT;
+  this->u_.in_output_segment.output_segment = os;
+  this->u_.in_output_segment.offset_base = base;
+}
+
+// Set the symbol to undefined.  This is used for pre-defined
+// symbols whose segments aren't known until after layout is done
+// (e.g., __ehdr_start).
+
+void
+Symbol::set_undefined()
+{
+  gold_assert(this->is_predefined_);
+  this->source_ = IS_UNDEFINED;
+  this->is_predefined_ = false;
+}
+
 // Class Symbol_table.
 
 Symbol_table::Symbol_table(unsigned int count,

gold/symtab.h

@@ -238,7 +238,7 @@ class Symbol
   override_visibility(elfcpp::STV);
 
   // Set whether the symbol was originally a weak undef or a regular undef
-  // when resolved by a dynamic def.
+  // when resolved by a dynamic def or by a special symbol.
   inline void
   set_undef_binding(elfcpp::STB bind)
   {
@@ -249,7 +249,8 @@ class Symbol
       }
   }
 
-  // Return TRUE if a weak undef was resolved by a dynamic def.
+  // Return TRUE if a weak undef was resolved by a dynamic def or
+  // by a special symbol.
   inline bool
   is_undef_binding_weak() const
   { return this->undef_binding_weak_; }
@@ -517,7 +518,20 @@ class Symbol
   // Return whether this is a weak undefined symbol.
   bool
   is_weak_undefined() const
-  { return this->is_undefined() && this->binding() == elfcpp::STB_WEAK; }
+  {
+    return (this->is_undefined()
+	    && (this->binding() == elfcpp::STB_WEAK
+		|| this->is_undef_binding_weak()));
+  }
+
+  // Return whether this is a strong undefined symbol.
+  bool
+  is_strong_undefined() const
+  {
+    return (this->is_undefined()
+	    && this->binding() != elfcpp::STB_WEAK
+	    && !this->is_undef_binding_weak());
+  }
 
   // Return whether this is an absolute symbol.
   bool
@@ -782,6 +796,18 @@ class Symbol
   void
   set_output_section(Output_section*);
 
+  // Set the symbol's output segment.  This is used for pre-defined
+  // symbols whose segments aren't known until after layout is done
+  // (e.g., __ehdr_start).
+  void
+  set_output_segment(Output_segment*, Segment_offset_base);
+
+  // Set the symbol to undefined.  This is used for pre-defined
+  // symbols whose segments aren't known until after layout is done
+  // (e.g., __ehdr_start).
+  void
+  set_undefined();
+
   // Return whether there should be a warning for references to this
   // symbol.
   bool
@@ -1030,7 +1056,7 @@ class Symbol
   // True if UNDEF_BINDING_WEAK_ has been set (bit 32).
   bool undef_binding_set_ : 1;
   // True if this symbol was a weak undef resolved by a dynamic def
-  // (bit 33).
+  // or by a special symbol (bit 33).
   bool undef_binding_weak_ : 1;
   // True if this symbol is a predefined linker symbol (bit 34).
   bool is_predefined_ : 1;

gold/target-reloc.h

@@ -143,12 +143,6 @@ class Default_comdat_behavior
   }
 };
 
-inline bool
-is_strong_undefined(const Symbol* sym)
-{
-  return sym->is_undefined() && sym->binding() != elfcpp::STB_WEAK;
-}
-
 // Give an error for a symbol with non-default visibility which is not
 // defined locally.
 
@@ -190,7 +184,7 @@ issue_undefined_symbol_error(const Symbol* sym)
     return false;
 
   // We don't report weak symbols.
-  if (sym->binding() == elfcpp::STB_WEAK)
+  if (sym->is_weak_undefined())
     return false;
 
   // We don't report symbols defined in discarded sections.
@@ -216,6 +210,10 @@ issue_undefined_symbol_error(const Symbol* sym)
 	return false;
     }
 
+  // If the symbol is hidden, report it.
+  if (sym->visibility() == elfcpp::STV_HIDDEN)
+    return true;
+
   // When creating a shared library, only report unresolved symbols if
   // -z defs was used.
   if (parameters->options().shared() && !parameters->options().defs())
@@ -419,7 +417,7 @@ relocate_section(
 	gold_undefined_symbol_at_location(sym, relinfo, i, offset);
       else if (sym != NULL
 	       && sym->visibility() != elfcpp::STV_DEFAULT
-	       && (is_strong_undefined(sym) || sym->is_from_dynobj()))
+	       && (sym->is_strong_undefined() || sym->is_from_dynobj()))
 	visibility_error(sym);
 
       if (sym != NULL && sym->has_warning())

gold/testsuite/Makefile.am

@@ -2199,6 +2199,50 @@ gdb_index_test_4.stdout: gdb_index_test_4
 
 endif HAVE_PUBNAMES
 
+# Test that __ehdr_start is defined correctly.
+check_PROGRAMS += ehdr_start_test_1
+ehdr_start_test_1_SOURCES = ehdr_start_test.cc
+ehdr_start_test_1_DEPENDENCIES = gcctestdir/ld
+ehdr_start_test_1_CXXFLAGS =
+ehdr_start_test_1_LDFLAGS = -Bgcctestdir/
+ehdr_start_test_1_LDADD =
+
+# Test that __ehdr_start is defined correctly with a weak reference.
+check_PROGRAMS += ehdr_start_test_2
+ehdr_start_test_2_SOURCES = ehdr_start_test.cc
+ehdr_start_test_2_DEPENDENCIES = gcctestdir/ld
+ehdr_start_test_2_CXXFLAGS = -DEHDR_START_WEAK
+ehdr_start_test_2_LDFLAGS = -Bgcctestdir/
+ehdr_start_test_2_LDADD =
+
+# Test that __ehdr_start is defined correctly when used with a linker script.
+check_PROGRAMS += ehdr_start_test_3
+ehdr_start_test_3_SOURCES = ehdr_start_test.cc
+ehdr_start_test_3_DEPENDENCIES = gcctestdir/ld $(srcdir)/ehdr_start_test.t
+ehdr_start_test_3_CXXFLAGS = -DEHDR_START_WEAK
+ehdr_start_test_3_LDFLAGS = -Bgcctestdir/ -Wl,-T,$(srcdir)/ehdr_start_test.t
+ehdr_start_test_3_LDADD =
+
+# Test that __ehdr_start is left undefined when the text segment is not
+# appropriately aligned.
+check_SCRIPTS += ehdr_start_test_4.sh
+check_DATA += ehdr_start_test_4.syms
+MOSTLYCLEANFILES += ehdr_start_test_4
+ehdr_start_test_4.syms: ehdr_start_test_4
+	$(TEST_NM) ehdr_start_test_4 > $@
+ehdr_start_test_4: ehdr_start_test_4.o gcctestdir/ld
+	$(CXXLINK) -Bgcctestdir/ld/ -Wl,-Ttext=0x100100 $<
+ehdr_start_test_4.o: ehdr_start_test.cc
+	$(CXXCOMPILE) -c -DEHDR_START_WEAK -o $@ $<
+
+# Test that __ehdr_start is not overridden when supplied by the user.
+check_PROGRAMS += ehdr_start_test_5
+ehdr_start_test_5_SOURCES = ehdr_start_test.cc ehdr_start_def.cc
+ehdr_start_test_5_DEPENDENCIES = gcctestdir/ld
+ehdr_start_test_5_CXXFLAGS = -DEHDR_START_USER_DEF
+ehdr_start_test_5_LDFLAGS = -Bgcctestdir/
+ehdr_start_test_5_LDADD =
+
 # End-to-end incremental linking tests.
 # Incremental linking is currently supported only on the x86_64 target.
 

gold/testsuite/Makefile.in

@@ -523,7 +523,19 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @NATIVE_LINKER_FALSE@ifuncmain7_DEPENDENCIES =
 
 # Test that --start-lib and --end-lib function correctly.
-@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_60 = start_lib_test
+
+# Test that __ehdr_start is defined correctly.
+
+# Test that __ehdr_start is defined correctly with a weak reference.
+
+# Test that __ehdr_start is defined correctly when used with a linker script.
+
+# Test that __ehdr_start is not overridden when supplied by the user.
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_60 = start_lib_test \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ehdr_start_test_1 \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ehdr_start_test_2 \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ehdr_start_test_3 \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ehdr_start_test_5
 
 # Test that --gdb-index functions correctly without gcc-generated pubnames.
 @GCC_TRUE@@HAVE_PUBNAMES_TRUE@@NATIVE_LINKER_TRUE@am__append_61 = gdb_index_test_1.sh
@@ -546,10 +558,24 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @GCC_TRUE@@HAVE_PUBNAMES_TRUE@@NATIVE_LINKER_TRUE@	gdb_index_test_3 \
 @GCC_TRUE@@HAVE_PUBNAMES_TRUE@@NATIVE_LINKER_TRUE@	gdb_index_test_4.stdout \
 @GCC_TRUE@@HAVE_PUBNAMES_TRUE@@NATIVE_LINKER_TRUE@	gdb_index_test_4
+@GCC_FALSE@ehdr_start_test_1_DEPENDENCIES =
+@NATIVE_LINKER_FALSE@ehdr_start_test_1_DEPENDENCIES =
+@GCC_FALSE@ehdr_start_test_2_DEPENDENCIES =
+@NATIVE_LINKER_FALSE@ehdr_start_test_2_DEPENDENCIES =
+@GCC_FALSE@ehdr_start_test_3_DEPENDENCIES =
+@NATIVE_LINKER_FALSE@ehdr_start_test_3_DEPENDENCIES =
+
+# Test that __ehdr_start is left undefined when the text segment is not
+# appropriately aligned.
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_70 = ehdr_start_test_4.sh
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_71 = ehdr_start_test_4.syms
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_72 = ehdr_start_test_4
+@GCC_FALSE@ehdr_start_test_5_DEPENDENCIES =
+@NATIVE_LINKER_FALSE@ehdr_start_test_5_DEPENDENCIES =
 
 # Test the --incremental-unchanged flag with an archive library.
 # The second link should not update the library.
-@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_70 = incremental_test_2 \
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_73 = incremental_test_2 \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	incremental_test_3 \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	incremental_test_4 \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	incremental_test_5 \
@@ -558,7 +584,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	incremental_common_test_1 \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	incremental_comdat_test_1 \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	exception_x86_64_bnd_test
-@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_71 = two_file_test_tmp_2.o \
+@DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_74 = two_file_test_tmp_2.o \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	two_file_test_tmp_3.o \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	incremental_test_4.base \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	two_file_test_tmp_4.o \
@@ -568,23 +594,23 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 # These tests work with native and cross linkers.
 
 # Test script section order.
-@NATIVE_OR_CROSS_LINKER_TRUE@am__append_72 = script_test_10.sh
-@NATIVE_OR_CROSS_LINKER_TRUE@am__append_73 = script_test_10.stdout
-@NATIVE_OR_CROSS_LINKER_TRUE@am__append_74 = script_test_10
+@NATIVE_OR_CROSS_LINKER_TRUE@am__append_75 = script_test_10.sh
+@NATIVE_OR_CROSS_LINKER_TRUE@am__append_76 = script_test_10.stdout
+@NATIVE_OR_CROSS_LINKER_TRUE@am__append_77 = script_test_10
 
 # These tests work with cross linkers only.
-@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_75 = split_i386.sh
-@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_76 = split_i386_1.stdout split_i386_2.stdout \
+@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_78 = split_i386.sh
+@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_79 = split_i386_1.stdout split_i386_2.stdout \
 @DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_i386_3.stdout split_i386_4.stdout split_i386_r.stdout
 
-@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_77 = split_i386_1 split_i386_2 split_i386_3 \
+@DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_80 = split_i386_1 split_i386_2 split_i386_3 \
 @DEFAULT_TARGET_I386_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_i386_4 split_i386_r
 
-@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_78 = split_x86_64.sh
-@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_79 = split_x86_64_1.stdout split_x86_64_2.stdout \
+@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_81 = split_x86_64.sh
+@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_82 = split_x86_64_1.stdout split_x86_64_2.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_x86_64_3.stdout split_x86_64_4.stdout split_x86_64_r.stdout
 
-@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_80 = split_x86_64_1 split_x86_64_2 split_x86_64_3 \
+@DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_83 = split_x86_64_1 split_x86_64_2 split_x86_64_3 \
 @DEFAULT_TARGET_X86_64_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	split_x86_64_4 split_x86_64_r
 
 
@@ -599,7 +625,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 # Check Thumb to Thumb farcall veneers
 
 # Check Thumb to ARM farcall veneers
-@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_81 = arm_abs_global.sh \
+@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_84 = arm_abs_global.sh \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_branch_in_range.sh \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_branch_out_of_range.sh \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_fix_v4bx.sh \
@@ -613,7 +639,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_farcall_arm_thumb.sh \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_farcall_thumb_thumb.sh \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_farcall_thumb_arm.sh
-@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_82 = arm_abs_global.stdout \
+@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_85 = arm_abs_global.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_bl_in_range.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_bl_out_of_range.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	thumb_bl_in_range.stdout \
@@ -658,7 +684,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_farcall_thumb_thumb_6m.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_farcall_thumb_arm.stdout \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_farcall_thumb_arm_5t.stdout
-@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_83 = arm_abs_global \
+@DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@am__append_86 = arm_abs_global \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_bl_in_range \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_bl_out_of_range \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	thumb_bl_in_range \
@@ -701,10 +727,10 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_farcall_thumb_thumb_6m \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_farcall_thumb_arm \
 @DEFAULT_TARGET_ARM_TRUE@@NATIVE_OR_CROSS_LINKER_TRUE@	arm_farcall_thumb_arm_5t
-@DEFAULT_TARGET_X86_64_TRUE@am__append_84 = *.dwo *.dwp
-@DEFAULT_TARGET_X86_64_TRUE@am__append_85 = dwp_test_1.sh \
+@DEFAULT_TARGET_X86_64_TRUE@am__append_87 = *.dwo *.dwp
+@DEFAULT_TARGET_X86_64_TRUE@am__append_88 = dwp_test_1.sh \
 @DEFAULT_TARGET_X86_64_TRUE@	dwp_test_2.sh
-@DEFAULT_TARGET_X86_64_TRUE@am__append_86 = dwp_test_1.stdout \
+@DEFAULT_TARGET_X86_64_TRUE@am__append_89 = dwp_test_1.stdout \
 @DEFAULT_TARGET_X86_64_TRUE@	dwp_test_2.stdout
 subdir = testsuite
 DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am
@@ -887,7 +913,11 @@ libgoldtest_a_OBJECTS = $(am_libgoldtest_a_OBJECTS)
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@	ifuncmain7pic$(EXEEXT) \
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@	ifuncmain7pie$(EXEEXT) \
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@	ifuncvar$(EXEEXT)
-@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_38 = start_lib_test$(EXEEXT)
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_38 = start_lib_test$(EXEEXT) \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ehdr_start_test_1$(EXEEXT) \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ehdr_start_test_2$(EXEEXT) \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ehdr_start_test_3$(EXEEXT) \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ehdr_start_test_5$(EXEEXT)
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_39 = incremental_test_2$(EXEEXT) \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	incremental_test_3$(EXEEXT) \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@	incremental_test_4$(EXEEXT) \
@@ -981,6 +1011,23 @@ discard_locals_test_LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 dynamic_list_2_OBJECTS = $(am_dynamic_list_2_OBJECTS)
 dynamic_list_2_LINK = $(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) \
 	$(dynamic_list_2_LDFLAGS) $(LDFLAGS) -o $@
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am_ehdr_start_test_1_OBJECTS = ehdr_start_test_1-ehdr_start_test.$(OBJEXT)
+ehdr_start_test_1_OBJECTS = $(am_ehdr_start_test_1_OBJECTS)
+ehdr_start_test_1_LINK = $(CXXLD) $(ehdr_start_test_1_CXXFLAGS) \
+	$(CXXFLAGS) $(ehdr_start_test_1_LDFLAGS) $(LDFLAGS) -o $@
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am_ehdr_start_test_2_OBJECTS = ehdr_start_test_2-ehdr_start_test.$(OBJEXT)
+ehdr_start_test_2_OBJECTS = $(am_ehdr_start_test_2_OBJECTS)
+ehdr_start_test_2_LINK = $(CXXLD) $(ehdr_start_test_2_CXXFLAGS) \
+	$(CXXFLAGS) $(ehdr_start_test_2_LDFLAGS) $(LDFLAGS) -o $@
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am_ehdr_start_test_3_OBJECTS = ehdr_start_test_3-ehdr_start_test.$(OBJEXT)
+ehdr_start_test_3_OBJECTS = $(am_ehdr_start_test_3_OBJECTS)
+ehdr_start_test_3_LINK = $(CXXLD) $(ehdr_start_test_3_CXXFLAGS) \
+	$(CXXFLAGS) $(ehdr_start_test_3_LDFLAGS) $(LDFLAGS) -o $@
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am_ehdr_start_test_5_OBJECTS = ehdr_start_test_5-ehdr_start_test.$(OBJEXT) \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ehdr_start_test_5-ehdr_start_def.$(OBJEXT)
+ehdr_start_test_5_OBJECTS = $(am_ehdr_start_test_5_OBJECTS)
+ehdr_start_test_5_LINK = $(CXXLD) $(ehdr_start_test_5_CXXFLAGS) \
+	$(CXXFLAGS) $(ehdr_start_test_5_LDFLAGS) $(LDFLAGS) -o $@
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am_exception_same_shared_test_OBJECTS =  \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	exception_test_main.$(OBJEXT)
 exception_same_shared_test_OBJECTS =  \
@@ -1792,7 +1839,9 @@ SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c basic_pie_test.c \
 	$(common_test_1_SOURCES) $(common_test_2_SOURCES) \
 	$(constructor_static_test_SOURCES) $(constructor_test_SOURCES) \
 	$(copy_test_SOURCES) $(discard_locals_test_SOURCES) \
-	$(dynamic_list_2_SOURCES) \
+	$(dynamic_list_2_SOURCES) $(ehdr_start_test_1_SOURCES) \
+	$(ehdr_start_test_2_SOURCES) $(ehdr_start_test_3_SOURCES) \
+	$(ehdr_start_test_5_SOURCES) \
 	$(exception_same_shared_test_SOURCES) \
 	$(exception_separate_shared_12_test_SOURCES) \
 	$(exception_separate_shared_21_test_SOURCES) \
@@ -2149,23 +2198,24 @@ MOSTLYCLEANFILES = *.so *.syms *.stdout $(am__append_4) \
 	$(am__append_17) $(am__append_26) $(am__append_28) \
 	$(am__append_30) $(am__append_36) $(am__append_40) \
 	$(am__append_41) $(am__append_47) $(am__append_63) \
-	$(am__append_66) $(am__append_69) $(am__append_71) \
+	$(am__append_66) $(am__append_69) $(am__append_72) \
 	$(am__append_74) $(am__append_77) $(am__append_80) \
-	$(am__append_83) $(am__append_84)
+	$(am__append_83) $(am__append_86) $(am__append_87)
 
 # We will add to these later, for each individual test.  Note
 # that we add each test under check_SCRIPTS or check_PROGRAMS;
 # the TESTS variable is automatically populated from these.
 check_SCRIPTS = $(am__append_2) $(am__append_34) $(am__append_38) \
 	$(am__append_42) $(am__append_45) $(am__append_61) \
-	$(am__append_64) $(am__append_67) $(am__append_72) \
+	$(am__append_64) $(am__append_67) $(am__append_70) \
 	$(am__append_75) $(am__append_78) $(am__append_81) \
-	$(am__append_85)
+	$(am__append_84) $(am__append_88)
 check_DATA = $(am__append_3) $(am__append_27) $(am__append_29) \
 	$(am__append_35) $(am__append_39) $(am__append_43) \
 	$(am__append_46) $(am__append_62) $(am__append_65) \
-	$(am__append_68) $(am__append_73) $(am__append_76) \
-	$(am__append_79) $(am__append_82) $(am__append_86)
+	$(am__append_68) $(am__append_71) $(am__append_76) \
+	$(am__append_79) $(am__append_82) $(am__append_85) \
+	$(am__append_89)
 BUILT_SOURCES = $(am__append_25)
 TESTS = $(check_SCRIPTS) $(check_PROGRAMS)
 
@@ -2633,6 +2683,26 @@ LDADD = libgoldtest.a ../libgold.a ../../libiberty/libiberty.a $(LIBINTL) \
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncvar_DEPENDENCIES = gcctestdir/ld ifuncvar.so
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncvar_LDFLAGS = -Bgcctestdir/ -Wl,-R,.
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncvar_LDADD = ifuncvar.so
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_1_SOURCES = ehdr_start_test.cc
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_1_DEPENDENCIES = gcctestdir/ld
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_1_CXXFLAGS = 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_1_LDFLAGS = -Bgcctestdir/
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_1_LDADD = 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_2_SOURCES = ehdr_start_test.cc
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_2_DEPENDENCIES = gcctestdir/ld
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_2_CXXFLAGS = -DEHDR_START_WEAK
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_2_LDFLAGS = -Bgcctestdir/
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_2_LDADD = 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_3_SOURCES = ehdr_start_test.cc
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_3_DEPENDENCIES = gcctestdir/ld $(srcdir)/ehdr_start_test.t
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_3_CXXFLAGS = -DEHDR_START_WEAK
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_3_LDFLAGS = -Bgcctestdir/ -Wl,-T,$(srcdir)/ehdr_start_test.t
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_3_LDADD = 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_5_SOURCES = ehdr_start_test.cc ehdr_start_def.cc
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_5_DEPENDENCIES = gcctestdir/ld
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_5_CXXFLAGS = -DEHDR_START_USER_DEF
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_5_LDFLAGS = -Bgcctestdir/
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_5_LDADD = 
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@exception_x86_64_bnd_test_SOURCES = exception_test_main.cc
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@exception_x86_64_bnd_test_DEPENDENCIES = exception_x86_64_bnd_1.o \
 @DEFAULT_TARGET_X86_64_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@					 exception_x86_64_bnd_2.o
@@ -2749,6 +2819,18 @@ discard_locals_test$(EXEEXT): $(discard_locals_test_OBJECTS) $(discard_locals_te
 dynamic_list_2$(EXEEXT): $(dynamic_list_2_OBJECTS) $(dynamic_list_2_DEPENDENCIES) 
 	@rm -f dynamic_list_2$(EXEEXT)
 	$(dynamic_list_2_LINK) $(dynamic_list_2_OBJECTS) $(dynamic_list_2_LDADD) $(LIBS)
+ehdr_start_test_1$(EXEEXT): $(ehdr_start_test_1_OBJECTS) $(ehdr_start_test_1_DEPENDENCIES) 
+	@rm -f ehdr_start_test_1$(EXEEXT)
+	$(ehdr_start_test_1_LINK) $(ehdr_start_test_1_OBJECTS) $(ehdr_start_test_1_LDADD) $(LIBS)
+ehdr_start_test_2$(EXEEXT): $(ehdr_start_test_2_OBJECTS) $(ehdr_start_test_2_DEPENDENCIES) 
+	@rm -f ehdr_start_test_2$(EXEEXT)
+	$(ehdr_start_test_2_LINK) $(ehdr_start_test_2_OBJECTS) $(ehdr_start_test_2_LDADD) $(LIBS)
+ehdr_start_test_3$(EXEEXT): $(ehdr_start_test_3_OBJECTS) $(ehdr_start_test_3_DEPENDENCIES) 
+	@rm -f ehdr_start_test_3$(EXEEXT)
+	$(ehdr_start_test_3_LINK) $(ehdr_start_test_3_OBJECTS) $(ehdr_start_test_3_LDADD) $(LIBS)
+ehdr_start_test_5$(EXEEXT): $(ehdr_start_test_5_OBJECTS) $(ehdr_start_test_5_DEPENDENCIES) 
+	@rm -f ehdr_start_test_5$(EXEEXT)
+	$(ehdr_start_test_5_LINK) $(ehdr_start_test_5_OBJECTS) $(ehdr_start_test_5_LDADD) $(LIBS)
 exception_same_shared_test$(EXEEXT): $(exception_same_shared_test_OBJECTS) $(exception_same_shared_test_DEPENDENCIES) 
 	@rm -f exception_same_shared_test$(EXEEXT)
 	$(exception_same_shared_test_LINK) $(exception_same_shared_test_OBJECTS) $(exception_same_shared_test_LDADD) $(LIBS)
@@ -3491,6 +3573,11 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/copy_test.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/discard_locals_test.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/dynamic_list_2.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ehdr_start_test_1-ehdr_start_test.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ehdr_start_test_2-ehdr_start_test.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ehdr_start_test_3-ehdr_start_test.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ehdr_start_test_5-ehdr_start_def.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ehdr_start_test_5-ehdr_start_test.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/exception_test_1.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/exception_test_2.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/exception_test_main.Po@am__quote@
@@ -3637,6 +3724,76 @@ large-large.obj: large.c
 @AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCXX_FALSE@	$(CXXCOMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
 
+ehdr_start_test_1-ehdr_start_test.o: ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_1_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_1-ehdr_start_test.o -MD -MP -MF $(DEPDIR)/ehdr_start_test_1-ehdr_start_test.Tpo -c -o ehdr_start_test_1-ehdr_start_test.o `test -f 'ehdr_start_test.cc' || echo '$(srcdir)/'`ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_1-ehdr_start_test.Tpo $(DEPDIR)/ehdr_start_test_1-ehdr_start_test.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_test.cc' object='ehdr_start_test_1-ehdr_start_test.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_1_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_1-ehdr_start_test.o `test -f 'ehdr_start_test.cc' || echo '$(srcdir)/'`ehdr_start_test.cc
+
+ehdr_start_test_1-ehdr_start_test.obj: ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_1_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_1-ehdr_start_test.obj -MD -MP -MF $(DEPDIR)/ehdr_start_test_1-ehdr_start_test.Tpo -c -o ehdr_start_test_1-ehdr_start_test.obj `if test -f 'ehdr_start_test.cc'; then $(CYGPATH_W) 'ehdr_start_test.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_test.cc'; fi`
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_1-ehdr_start_test.Tpo $(DEPDIR)/ehdr_start_test_1-ehdr_start_test.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_test.cc' object='ehdr_start_test_1-ehdr_start_test.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_1_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_1-ehdr_start_test.obj `if test -f 'ehdr_start_test.cc'; then $(CYGPATH_W) 'ehdr_start_test.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_test.cc'; fi`
+
+ehdr_start_test_2-ehdr_start_test.o: ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_2_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_2-ehdr_start_test.o -MD -MP -MF $(DEPDIR)/ehdr_start_test_2-ehdr_start_test.Tpo -c -o ehdr_start_test_2-ehdr_start_test.o `test -f 'ehdr_start_test.cc' || echo '$(srcdir)/'`ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_2-ehdr_start_test.Tpo $(DEPDIR)/ehdr_start_test_2-ehdr_start_test.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_test.cc' object='ehdr_start_test_2-ehdr_start_test.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_2_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_2-ehdr_start_test.o `test -f 'ehdr_start_test.cc' || echo '$(srcdir)/'`ehdr_start_test.cc
+
+ehdr_start_test_2-ehdr_start_test.obj: ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_2_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_2-ehdr_start_test.obj -MD -MP -MF $(DEPDIR)/ehdr_start_test_2-ehdr_start_test.Tpo -c -o ehdr_start_test_2-ehdr_start_test.obj `if test -f 'ehdr_start_test.cc'; then $(CYGPATH_W) 'ehdr_start_test.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_test.cc'; fi`
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_2-ehdr_start_test.Tpo $(DEPDIR)/ehdr_start_test_2-ehdr_start_test.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_test.cc' object='ehdr_start_test_2-ehdr_start_test.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_2_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_2-ehdr_start_test.obj `if test -f 'ehdr_start_test.cc'; then $(CYGPATH_W) 'ehdr_start_test.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_test.cc'; fi`
+
+ehdr_start_test_3-ehdr_start_test.o: ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_3_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_3-ehdr_start_test.o -MD -MP -MF $(DEPDIR)/ehdr_start_test_3-ehdr_start_test.Tpo -c -o ehdr_start_test_3-ehdr_start_test.o `test -f 'ehdr_start_test.cc' || echo '$(srcdir)/'`ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_3-ehdr_start_test.Tpo $(DEPDIR)/ehdr_start_test_3-ehdr_start_test.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_test.cc' object='ehdr_start_test_3-ehdr_start_test.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_3_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_3-ehdr_start_test.o `test -f 'ehdr_start_test.cc' || echo '$(srcdir)/'`ehdr_start_test.cc
+
+ehdr_start_test_3-ehdr_start_test.obj: ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_3_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_3-ehdr_start_test.obj -MD -MP -MF $(DEPDIR)/ehdr_start_test_3-ehdr_start_test.Tpo -c -o ehdr_start_test_3-ehdr_start_test.obj `if test -f 'ehdr_start_test.cc'; then $(CYGPATH_W) 'ehdr_start_test.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_test.cc'; fi`
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_3-ehdr_start_test.Tpo $(DEPDIR)/ehdr_start_test_3-ehdr_start_test.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_test.cc' object='ehdr_start_test_3-ehdr_start_test.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_3_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_3-ehdr_start_test.obj `if test -f 'ehdr_start_test.cc'; then $(CYGPATH_W) 'ehdr_start_test.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_test.cc'; fi`
+
+ehdr_start_test_5-ehdr_start_test.o: ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_5_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_5-ehdr_start_test.o -MD -MP -MF $(DEPDIR)/ehdr_start_test_5-ehdr_start_test.Tpo -c -o ehdr_start_test_5-ehdr_start_test.o `test -f 'ehdr_start_test.cc' || echo '$(srcdir)/'`ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_5-ehdr_start_test.Tpo $(DEPDIR)/ehdr_start_test_5-ehdr_start_test.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_test.cc' object='ehdr_start_test_5-ehdr_start_test.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_5_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_5-ehdr_start_test.o `test -f 'ehdr_start_test.cc' || echo '$(srcdir)/'`ehdr_start_test.cc
+
+ehdr_start_test_5-ehdr_start_test.obj: ehdr_start_test.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_5_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_5-ehdr_start_test.obj -MD -MP -MF $(DEPDIR)/ehdr_start_test_5-ehdr_start_test.Tpo -c -o ehdr_start_test_5-ehdr_start_test.obj `if test -f 'ehdr_start_test.cc'; then $(CYGPATH_W) 'ehdr_start_test.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_test.cc'; fi`
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_5-ehdr_start_test.Tpo $(DEPDIR)/ehdr_start_test_5-ehdr_start_test.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_test.cc' object='ehdr_start_test_5-ehdr_start_test.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_5_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_5-ehdr_start_test.obj `if test -f 'ehdr_start_test.cc'; then $(CYGPATH_W) 'ehdr_start_test.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_test.cc'; fi`
+
+ehdr_start_test_5-ehdr_start_def.o: ehdr_start_def.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_5_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_5-ehdr_start_def.o -MD -MP -MF $(DEPDIR)/ehdr_start_test_5-ehdr_start_def.Tpo -c -o ehdr_start_test_5-ehdr_start_def.o `test -f 'ehdr_start_def.cc' || echo '$(srcdir)/'`ehdr_start_def.cc
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_5-ehdr_start_def.Tpo $(DEPDIR)/ehdr_start_test_5-ehdr_start_def.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_def.cc' object='ehdr_start_test_5-ehdr_start_def.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_5_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_5-ehdr_start_def.o `test -f 'ehdr_start_def.cc' || echo '$(srcdir)/'`ehdr_start_def.cc
+
+ehdr_start_test_5-ehdr_start_def.obj: ehdr_start_def.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_5_CXXFLAGS) $(CXXFLAGS) -MT ehdr_start_test_5-ehdr_start_def.obj -MD -MP -MF $(DEPDIR)/ehdr_start_test_5-ehdr_start_def.Tpo -c -o ehdr_start_test_5-ehdr_start_def.obj `if test -f 'ehdr_start_def.cc'; then $(CYGPATH_W) 'ehdr_start_def.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_def.cc'; fi`
+@am__fastdepCXX_TRUE@	$(am__mv) $(DEPDIR)/ehdr_start_test_5-ehdr_start_def.Tpo $(DEPDIR)/ehdr_start_test_5-ehdr_start_def.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='ehdr_start_def.cc' object='ehdr_start_test_5-ehdr_start_def.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ehdr_start_test_5_CXXFLAGS) $(CXXFLAGS) -c -o ehdr_start_test_5-ehdr_start_def.obj `if test -f 'ehdr_start_def.cc'; then $(CYGPATH_W) 'ehdr_start_def.cc'; else $(CYGPATH_W) '$(srcdir)/ehdr_start_def.cc'; fi`
+
 ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
 	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
 	unique=`for i in $$list; do \
@@ -3957,6 +4114,8 @@ gdb_index_test_3.sh.log: gdb_index_test_3.sh
 	@p='gdb_index_test_3.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 gdb_index_test_4.sh.log: gdb_index_test_4.sh
 	@p='gdb_index_test_4.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
+ehdr_start_test_4.sh.log: ehdr_start_test_4.sh
+	@p='ehdr_start_test_4.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 script_test_10.sh.log: script_test_10.sh
 	@p='script_test_10.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 split_i386.sh.log: split_i386.sh
@@ -4281,6 +4440,14 @@ ifuncvar.log: ifuncvar$(EXEEXT)
 	@p='ifuncvar$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 start_lib_test.log: start_lib_test$(EXEEXT)
 	@p='start_lib_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
+ehdr_start_test_1.log: ehdr_start_test_1$(EXEEXT)
+	@p='ehdr_start_test_1$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
+ehdr_start_test_2.log: ehdr_start_test_2$(EXEEXT)
+	@p='ehdr_start_test_2$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
+ehdr_start_test_3.log: ehdr_start_test_3$(EXEEXT)
+	@p='ehdr_start_test_3$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
+ehdr_start_test_5.log: ehdr_start_test_5$(EXEEXT)
+	@p='ehdr_start_test_5$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 incremental_test_2.log: incremental_test_2$(EXEEXT)
 	@p='incremental_test_2$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 incremental_test_3.log: incremental_test_3$(EXEEXT)
@@ -5405,6 +5572,12 @@ uninstall-am:
 @GCC_TRUE@@HAVE_PUBNAMES_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ -Wl,--gdb-index $<
 @GCC_TRUE@@HAVE_PUBNAMES_TRUE@@NATIVE_LINKER_TRUE@gdb_index_test_4.stdout: gdb_index_test_4
 @GCC_TRUE@@HAVE_PUBNAMES_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_READELF) --debug-dump=gdb_index $< > $@
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_4.syms: ehdr_start_test_4
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) ehdr_start_test_4 > $@
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_4: ehdr_start_test_4.o gcctestdir/ld
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ld/ -Wl,-Ttext=0x100100 $<
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ehdr_start_test_4.o: ehdr_start_test.cc
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -c -DEHDR_START_WEAK -o $@ $<
 
 # End-to-end incremental linking tests.
 # Incremental linking is currently supported only on the x86_64 target.

gold/testsuite/ehdr_start_def.cc

@@ -0,0 +1,26 @@
+// ehdr_start_def.cc -- test for __ehdr_start linker-defined symbol.
+
+// Copyright (C) 2014 Free Software Foundation, Inc.
+// Written by Cary Coutant <ccoutant@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+// We provide a user-defined __ehdr_start, to make sure that the
+// linker does not override this with the linker-defined symbol.
+
+char __ehdr_start[] = { 'a', 'b', 'c', 'd' };

gold/testsuite/ehdr_start_test.cc

@@ -0,0 +1,67 @@
+// ehdr_start_test.cc -- test for __ehdr_start linker-defined symbol.
+
+// Copyright (C) 2014 Free Software Foundation, Inc.
+// Written by Cary Coutant <ccoutant@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+// The goal of this program is to produce as many different types of
+// relocations as we can in a stand-alone program that does not use
+// TLS.  This program is compiled without optimization.
+
+#include "config.h"
+
+#include <cassert>
+#include <cstdio>
+
+#include "elfcpp.h"
+
+#ifdef EHDR_START_WEAK
+#define WEAK_ATTR __attribute__ ((weak))
+#else
+#define WEAK_ATTR
+#endif
+
+extern char __ehdr_start[] WEAK_ATTR;
+
+int
+main() {
+  printf("&__ehdr_start = %p\n", &__ehdr_start);
+
+#ifdef EHDR_START_UNDEF
+  assert(&__ehdr_start == 0);
+#else
+  assert(&__ehdr_start != NULL);
+
+  printf("ELF header: \\x%02x%c%c%c\n", __ehdr_start[0], __ehdr_start[1],
+	 __ehdr_start[2], __ehdr_start[3]);
+#ifdef EHDR_START_USER_DEF
+  assert(__ehdr_start[0] == 'a'
+	 && __ehdr_start[1] == 'b'
+	 && __ehdr_start[2] == 'c'
+	 && __ehdr_start[3] == 'd');
+#else
+  assert(__ehdr_start[elfcpp::EI_MAG0] == elfcpp::ELFMAG0
+	 && __ehdr_start[elfcpp::EI_MAG1] == elfcpp::ELFMAG1
+	 && __ehdr_start[elfcpp::EI_MAG2] == elfcpp::ELFMAG2
+	 && __ehdr_start[elfcpp::EI_MAG3] == elfcpp::ELFMAG3);
+#endif
+#endif
+
+  return 0;
+}

gold/testsuite/ehdr_start_test.t

@@ -0,0 +1,42 @@
+/* ehdr_start_test.t -- __ehdr_start test for gold
+
+   Copyright (C) 2008-2014 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor <iant@google.com>.
+
+   This file is part of gold.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+/* With luck this will work on all platforms.  */
+
+SECTIONS
+{
+  /* Set the text segment to start on a non-page boundary.  */
+  . = 0x10000040;
+
+  .text : { *(.text) }
+  . += 0x100000;
+  . = ALIGN(0x100);
+
+  .tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
+  .tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
+  .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*)
+		   *(.data.rel.ro* .gnu.linkonce.d.rel.ro.*) }
+  .dynamic : { *(.dynamic) }
+  .got : { *(.got) }
+  .got.plt : { *(.got.plt) }
+  .data : { *(.data .data.* .gnu.linkonce.d.*) }
+}

gold/testsuite/ehdr_start_test_4.sh

@@ -0,0 +1,40 @@
+#!/bin/sh
+
+# ehdr_start_test_4.sh -- test that __ehdr_start symbol is undefined.
+
+# Copyright (C) 2014 Free Software Foundation, Inc.
+# Written by Cary Coutant <ccoutant@google.com>.
+
+# This file is part of gold.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
+
+check()
+{
+    if ! grep -q "$2" "$1"
+    then
+	echo "Did not find expected symbol in $1:"
+	echo "   $2"
+	echo ""
+	echo "Actual output below:"
+	cat "$1"
+	exit 1
+    fi
+}
+
+check ehdr_start_test_4.syms "w __ehdr_start"
+
+exit 0