2010-04-07 Doug Kwan <dougkwan@google.com>

	* arm.cc: Replace "endianity" with "endianness" in comments.
	(Arm_exidx_cantunwind): Ditto.
	(Arm_relobj::Arm_relobj): Initialize merge_flags_and_attribures.
	(Arm_relobj::merge_flags_and_attributes): New method.
	(Arm_relobj::merge_flags_and_attributes_): New data member.
	(Arm_exidx_cantunwind::do_fixed_endian_write): Fix formatting.
	(Arm_relobj::scan_sections_for_stubs): Ditto.
	(Arm_relobj::do_read_symbols): Check to see if we really want to
	merge processor-specific flags and attributes.  Exit early if
	an object is empty except for section names and the undefined symbol.
	(Target_arm::do_finalize_sections): Move check for ELF format to
	Arm_relobj::do_read_symbols.  Merge processor specific flags and
	attributes from a regular object only when we have determined that
	it is aapropriate.  Do not create an .ARM.attributes section in
	output if there is no regular input object.
	(Target_arm::merge_processor_specific_flags): Check
	--warn-mismatch before printing any error.
	(Target_arm::merge_object_attributes): Ditto.
	* gold.cc (queue_middle_tasks): Handle the case in which there is
	no regular object in input.
	* options.cc (General_options::parse_EB): New method.
	(General_options::parse_EL): Same.
	(General_options::General_options): Initialize endianness_.
	* options.h (-EB, -EL, -no-pipeline-knowledge, -p, --warn-mismatch):
	New options.
	(General_options::Endianness): New enum.
	(General_options::endianness): New method.
	(General_options::endianness_): New data member.
	* parameters.cc (Parameters::set_options): Check target endianness.
	(Parameters::set_target_once): Ditto.
	(Parameters::check_target_endianness): New method.
	(parameters_force_valid_target): If either -EL or -EB is specified,
	use it to define endianness of default target.
	* parameters.h (Parameters::check_target_endianness): New method
	declaration.
	* target.h (class Target): Change "endianity" to "endianness"
	in comments.

1 files changed, 28 insertions, 0 deletions

diff --git a/gold/options.h b/gold/options.h
index 3a234d0..049a7ee 100644
--- a/gold/options.h
+++ b/gold/options.h
@@ -713,9 +713,15 @@ class General_options
               N_("Export all dynamic symbols"),
 	      N_("Do not export all dynamic symbols (default)"));
 
+  DEFINE_special(EB, options::ONE_DASH, '\0',
+		 N_("Link big-endian objects."), NULL);
+
   DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false,
               N_("Create exception frame header"), NULL);
 
+  DEFINE_special(EL, options::ONE_DASH, '\0',
+		 N_("Link little-endian objects."), NULL);
+
   DEFINE_bool(fatal_warnings, options::TWO_DASHES, '\0', false,
 	      N_("Treat warnings as errors"),
 	      N_("Do not treat warnings as errors"));
@@ -824,12 +830,18 @@ class General_options
   DEFINE_string(oformat, options::EXACTLY_TWO_DASHES, '\0', "elf",
 		N_("Set output format"), N_("[binary]"));
 
+  DEFINE_bool(p, options::ONE_DASH, '\0', false,
+	      N_("(ARM only) Ignore for backward compatibility"), NULL);
+
   DEFINE_bool(pie, options::ONE_DASH, '\0', false,
 	      N_("Create a position independent executable"), NULL);
   DEFINE_bool_alias(pic_executable, pie, options::TWO_DASHES, '\0',
 		    N_("Create a position independent executable"), NULL,
 		    false);
 
+  DEFINE_bool(pipeline_knowledge, options::ONE_DASH, '\0', false,
+	      NULL, N_("(ARM only) Ignore for backward compatibility"));
+
 #ifdef ENABLE_PLUGINS
   DEFINE_special(plugin, options::TWO_DASHES, '\0',
                  N_("Load a plugin library"), N_("PLUGIN"));
@@ -992,6 +1004,9 @@ class General_options
   DEFINE_bool(warn_constructors, options::TWO_DASHES, '\0', false,
 	      N_("Ignored"), N_("Ignored"));
 
+  DEFINE_bool(warn_mismatch, options::TWO_DASHES, '\0', true,
+	      NULL, N_("Don't warn about mismatched input files"));
+
   DEFINE_bool(warn_multiple_gp, options::TWO_DASHES, '\0', false,
 	      N_("Ignored"), NULL);
 
@@ -1256,6 +1271,17 @@ class General_options
   fix_v4bx() const
   { return (this->fix_v4bx_); }
 
+  enum Endianness
+  {
+    ENDIANNESS_NOT_SET,
+    ENDIANNESS_BIG,
+    ENDIANNESS_LITTLE
+  };
+
+  Endianness
+  endianness() const
+  { return this->endianness_; }
+
  private:
   // Don't copy this structure.
   General_options(const General_options&);
@@ -1347,6 +1373,8 @@ class General_options
   std::map<std::string, uint64_t> section_starts_;
   // Whether to process armv4 bx instruction relocation.
   Fix_v4bx fix_v4bx_;
+  // Endianness.
+  Endianness endianness_;
 };
 
 // The position-dependent options.  We use this to store the state of