Set the default DLL chracteristics to 0 for Cygwin based targets.

[binutils-gdb.git] / gold / layout.cc

diff --git a/gold/layout.cc b/gold/layout.cc
index 8acfb960d123fb3643031c901797a470bc6c8d99..38e9bceec7e25d93f1fbf54433cf9e5c0b24fa69 100644 (file)
--- a/gold/layout.cc
+++ b/gold/layout.cc
@@ -1,6 +1,6 @@
 // layout.cc -- lay out output file sections for gold
 
-// Copyright (C) 2006-2020 Free Software Foundation, Inc.
+// Copyright (C) 2006-2021 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -1173,14 +1173,20 @@ Layout::layout(Sized_relobj_file<size, big_endian>* object, unsigned int shndx,
     {
       // Some flags in the input section should not be automatically
       // copied to the output section.
-      elfcpp::Elf_Xword flags = (shdr.get_sh_flags()
-                                & ~ elfcpp::SHF_COMPRESSED);
+      elfcpp::Elf_Xword sh_flags = (shdr.get_sh_flags()
+                                   & ~ elfcpp::SHF_COMPRESSED);
       name = this->namepool_.add(name, true, NULL);
-      os = this->make_output_section(name, sh_type, flags,
-                                    ORDER_INVALID, false);
+      os = this->make_output_section(name, sh_type, sh_flags, ORDER_INVALID,
+                                    false);
     }
   else
     {
+      // Get the section flags and mask out any flags that do not
+      // take part in section matching.
+      elfcpp::Elf_Xword sh_flags
+         = (this->get_output_section_flags(shdr.get_sh_flags())
+            & ~object->osabi().ignored_sh_flags());
+
       // All ".text.unlikely.*" sections can be moved to a unique
       // segment with --text-unlikely-segment option.
       bool text_unlikely_segment
@@ -1189,13 +1195,10 @@ Layout::layout(Sized_relobj_file<size, big_endian>* object, unsigned int shndx,
                             object->section_name(shndx).c_str()));
       if (text_unlikely_segment)
        {
-         elfcpp::Elf_Xword flags
-           = this->get_output_section_flags(shdr.get_sh_flags());
-
          Stringpool::Key name_key;
          const char* os_name = this->namepool_.add(".text.unlikely", true,
                                                    &name_key);
-         os = this->get_output_section(os_name, name_key, sh_type, flags,
+         os = this->get_output_section(os_name, name_key, sh_type, sh_flags,
                                        ORDER_INVALID, false);
          // Map this output section to a unique segment.  This is done to
          // separate "text" that is not likely to be executed from "text"
@@ -1213,22 +1216,18 @@ Layout::layout(Sized_relobj_file<size, big_endian>* object, unsigned int shndx,
          if (it == this->section_segment_map_.end())
            {
              os = this->choose_output_section(object, name, sh_type,
-                                              shdr.get_sh_flags(), true,
-                                              ORDER_INVALID, false, false,
-                                              true);
+                                              sh_flags, true, ORDER_INVALID,
+                                              false, false, true);
            }
          else
            {
              // We know the name of the output section, directly call
              // get_output_section here by-passing choose_output_section.
-             elfcpp::Elf_Xword flags
-               = this->get_output_section_flags(shdr.get_sh_flags());
-
              const char* os_name = it->second->name;
              Stringpool::Key name_key;
              os_name = this->namepool_.add(os_name, true, &name_key);
-             os = this->get_output_section(os_name, name_key, sh_type, flags,
-                                       ORDER_INVALID, false);
+             os = this->get_output_section(os_name, name_key, sh_type,
+                                           sh_flags, ORDER_INVALID, false);
              if (!os->is_unique_segment())
                {
                  os->set_is_unique_segment();
@@ -3246,7 +3245,8 @@ Layout::create_note(const char* name, int note_type,
   if (allocate)
     {
       flags = elfcpp::SHF_ALLOC;
-      order = ORDER_RO_NOTE;
+      order = (note_type == elfcpp::NT_GNU_PROPERTY_TYPE_0
+              ?  ORDER_PROPERTY_NOTE : ORDER_RO_NOTE);
     }
   Output_section* os = this->choose_output_section(NULL, section_name,
                                                   elfcpp::SHT_NOTE,
@@ -5372,6 +5372,12 @@ Layout::finish_dynamic_section(const Input_objects* input_objects,
     flags |= elfcpp::DF_1_PIE;
   if (flags != 0)
     odyn->add_constant(elfcpp::DT_FLAGS_1, flags);
+
+  flags = 0;
+  if (parameters->options().unique())
+    flags |= elfcpp::DF_GNU_1_UNIQUE;
+  if (flags != 0)
+    odyn->add_constant(elfcpp::DT_GNU_FLAGS_1, flags);
 }
 
 // Set the size of the _DYNAMIC symbol table to be the size of the