Allow target to decide whether to include a section.

2014-04-15  Sasa Stankovic  <Sasa.Stankovic@imgtec.com>

gold/
	* layout.cc (Layout::include_section): Allow a target to decide
	whether to include a section.
	* target.h (Target::should_include_section): New function.
	(Target::do_should_include_section): New function.

diff --git a/gold/ChangeLog b/gold/ChangeLog
index 4ddef9a..f1fea46 100644 (file)
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,5 +1,12 @@
 2014-04-15  Sasa Stankovic  <Sasa.Stankovic@imgtec.com>
 
+       * layout.cc (Layout::include_section): Allow a target to decide
+       whether to include a section.
+       * target.h (Target::should_include_section): New function.
+       (Target::do_should_include_section): New function.
+
+2014-04-15  Sasa Stankovic  <Sasa.Stankovic@imgtec.com>
+
        * copy-relocs.cc (Copy_relocs::Copy_reloc_entry::emit): Remove and
        inline into ...
        (Copy_relocs::emit): ... here.

diff --git a/gold/layout.cc b/gold/layout.cc
index c96516c..02f691e 100644 (file)
--- a/gold/layout.cc
+++ b/gold/layout.cc
@@ -644,7 +644,13 @@ Layout::include_section(Sized_relobj_file<size, big_endian>*, const char* name,
       && (shdr.get_sh_flags() & elfcpp::SHF_EXCLUDE))
     return false;
 
-  switch (shdr.get_sh_type())
+  elfcpp::Elf_Word sh_type = shdr.get_sh_type();
+
+  if ((sh_type >= elfcpp::SHT_LOOS && sh_type <= elfcpp::SHT_HIOS)
+      || (sh_type >= elfcpp::SHT_LOPROC && sh_type <= elfcpp::SHT_HIPROC))
+    return parameters->target().should_include_section(sh_type);
+
+  switch (sh_type)
     {
     case elfcpp::SHT_NULL:
     case elfcpp::SHT_SYMTAB:

diff --git a/gold/target.h b/gold/target.h
index aaf4b1c..e380591 100644 (file)
--- a/gold/target.h
+++ b/gold/target.h
@@ -480,6 +480,11 @@ class Target
   adjust_dyn_symbol(const Symbol* sym, unsigned char* view) const
   { this->do_adjust_dyn_symbol(sym, view); }
 
+  // Return whether to include the section in the link.
+  bool
+  should_include_section(elfcpp::Elf_Word sh_type) const
+  { return this->do_should_include_section(sh_type); }
+
  protected:
   // This struct holds the constant information for a child class.  We
   // use a struct to avoid the overhead of virtual function calls for
@@ -773,6 +778,11 @@ class Target
   do_adjust_dyn_symbol(const Symbol*, unsigned char*) const
   { }
 
+  // This may be overridden by the child class.
+  virtual bool
+  do_should_include_section(elfcpp::Elf_Word) const
+  { return true; }
+
  private:
   // The implementations of the four do_make_elf_object virtual functions are
   // almost identical except for their sizes and endianness.  We use a template.