Fully implement the SECTIONS clause.

gold/script-sections.h

@@ -37,6 +37,8 @@ struct Input_section_spec;
 class Expression;
 class Sections_element;
 class Output_section_definition;
+class Output_section;
+class Output_segment;
 
 class Script_sections
 {
@@ -79,6 +81,11 @@ class Script_sections
   void
   add_symbol_assignment(const char* name, size_t length, Expression* value,
 			bool provide, bool hidden);
+
+  // Add an assignment to the special dot symbol.
+  void
+  add_dot_assignment(Expression* value);
+
   // Add an assertion.
   void
   add_assertion(Expression* check, const char* message, size_t messagelen);
@@ -91,6 +98,42 @@ class Script_sections
   void
   add_input_section(const Input_section_spec* spec, bool keep);
 
+  // Add any symbols we are defining to the symbol table.
+  void
+  add_symbols_to_table(Symbol_table*);
+
+  // Finalize symbol values and check assertions.
+  void
+  finalize_symbols(Symbol_table* symtab, const Layout* layout);
+
+  // Find the name of the output section to use for an input file name
+  // and section name.  This returns a name, and sets
+  // *OUTPUT_SECTION_SLOT to point to the address where the actual
+  // output section may be stored.
+  // 1) If the input section should be discarded, this returns NULL
+  //    and sets *OUTPUT_SECTION_SLOT to NULL.
+  // 2) If the input section is mapped by the SECTIONS clause, this
+  //    returns the name to use for the output section (in permanent
+  //    storage), and sets *OUTPUT_SECTION_SLOT to point to where the
+  //    output section should be stored.  **OUTPUT_SECTION_SLOT will be
+  //    non-NULL if we have seen this output section already.
+  // 3) If the input section is not mapped by the SECTIONS clause,
+  //    this returns SECTION_NAME, and sets *OUTPUT_SECTION_SLOT to
+  //    NULL.
+  const char*
+  output_section_name(const char* file_name, const char* section_name,
+		      Output_section*** output_section_slot);
+
+  // Place a marker for an orphan output section into the SECTIONS
+  // clause.
+  void
+  place_orphan(Output_section* os);
+
+  // Set the addresses of all the output sections.  Return the segment
+  // which holds the file header and segment headers, if any.
+  Output_segment*
+  set_section_addresses(Symbol_table*, Layout*);
+
   // Print the contents to the FILE.  This is for debugging.
   void
   print(FILE*) const;
@@ -98,6 +141,18 @@ class Script_sections
  private:
   typedef std::vector<Sections_element*> Sections_elements;
 
+  // Create segments.
+  Output_segment*
+  create_segments(Layout*);
+
+  // Create PT_NOTE and PT_TLS segments.
+  void
+  create_note_and_tls_segments(Layout*, const std::vector<Output_section*>*);
+
+  // Return whether the section is a BSS section.
+  static bool
+  is_bss_section(const Output_section*);
+
   // True if we ever saw a SECTIONS clause.
   bool saw_sections_clause_;
   // True if we are currently processing a SECTIONS clause.