2010-02-26 Doug Kwan <dougkwan@google.com>

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

diff --git a/gold/layout.h b/gold/layout.h
index 0437cf14da196df38ce39fbbe1e7c917f8978621..cd15c983e8b46a1c31f6776dbb29dbd8c8dde589 100644 (file)
--- a/gold/layout.h
+++ b/gold/layout.h
@@ -51,6 +51,7 @@ class Output_segment_headers;
 class Output_file_header;
 class Output_segment;
 class Output_data;
+class Output_data_reloc_generic;
 class Output_data_dynamic;
 class Output_symtab_xindex;
 class Output_reduced_debug_abbrev_section;
@@ -362,11 +363,21 @@ class Layout
   // Add an Output_section_data to the layout.  This is used for
   // special sections like the GOT section.  IS_DYNAMIC_LINKER_SECTION
   // is true for sections which are used by the dynamic linker, such
-  // as dynamic reloc sections.
+  // as dynamic reloc sections.  IS_RELRO is true for relro sections.
+  // IS_LAST_RELRO is true for the last relro section.
+  // IS_FIRST_NON_RELRO is true for the first section after the relro
+  // sections.
   Output_section*
   add_output_section_data(const char* name, elfcpp::Elf_Word type,
                          elfcpp::Elf_Xword flags,
-                         Output_section_data*, bool is_dynamic_linker_section);
+                         Output_section_data*, bool is_dynamic_linker_section,
+                         bool is_relro, bool is_last_relro,
+                         bool is_first_non_relro);
+
+  // Increase the size of the relro segment by this much.
+  void
+  increase_relro(unsigned int s)
+  { this->increase_relro_ += s; }
 
   // Create dynamic sections if necessary.
   void
@@ -423,6 +434,11 @@ class Layout
   is_linkonce(const char* name)
   { return strncmp(name, ".gnu.linkonce", sizeof(".gnu.linkonce") - 1) == 0; }
 
+  // Whether we have added an input section.
+  bool
+  have_added_input_section() const
+  { return this->have_added_input_section_; }
+
   // Return true if a section is a debugging section.
   static inline bool
   is_debug_info_section(const char* name)
@@ -541,6 +557,14 @@ class Layout
   incremental_inputs()
   { return this->incremental_inputs_; }
 
+  // For the target-specific code to add dynamic tags which are common
+  // to most targets.
+  void
+  add_target_dynamic_tags(bool use_rel, const Output_data* plt_got,
+                         const Output_data* plt_rel,
+                         const Output_data_reloc_generic* dyn_rel,
+                         bool add_debug, bool dynrel_includes_plt);
+
   // Compute and write out the build ID if needed.
   void
   write_build_id(Output_file*) const;
@@ -752,20 +776,24 @@ class Layout
   Output_section*
   get_output_section(const char* name, Stringpool::Key name_key,
                     elfcpp::Elf_Word type, elfcpp::Elf_Xword flags,
-                    bool is_interp, bool is_dynamic_linker_section);
+                    bool is_interp, bool is_dynamic_linker_section,
+                    bool is_relro, bool is_last_relro,
+                    bool is_first_non_relro);
 
   // Choose the output section for NAME in RELOBJ.
   Output_section*
   choose_output_section(const Relobj* relobj, const char* name,
                        elfcpp::Elf_Word type, elfcpp::Elf_Xword flags,
                        bool is_input_section, bool is_interp,
-                       bool is_dynamic_linker_section);
+                       bool is_dynamic_linker_section, bool is_relro,
+                       bool is_last_relro, bool is_first_non_relro);
 
   // Create a new Output_section.
   Output_section*
   make_output_section(const char* name, elfcpp::Elf_Word type,
                      elfcpp::Elf_Xword flags, bool is_interp,
-                     bool is_dynamic_linker_section);
+                     bool is_dynamic_linker_section, bool is_relro,
+                     bool is_last_relro, bool is_first_non_relro);
 
   // Attach a section to a segment.
   void
@@ -941,6 +969,9 @@ class Layout
   Output_segment* tls_segment_;
   // A pointer to the PT_GNU_RELRO segment if there is one.
   Output_segment* relro_segment_;
+  // A backend may increase the size of the PT_GNU_RELRO segment if
+  // there is one.  This is the amount to increase it by.
+  unsigned int increase_relro_;
   // The SHT_SYMTAB output section.
   Output_section* symtab_section_;
   // The SHT_SYMTAB_SHNDX for the regular symbol table if there is one.
@@ -973,6 +1004,8 @@ class Layout
   Group_signatures group_signatures_;
   // The size of the output file.
   off_t output_file_size_;
+  // Whether we have added an input section to an output section.
+  bool have_added_input_section_;
   // Whether we have attached the sections to the segments.
   bool sections_are_attached_;
   // Whether we have seen an object file marked to require an