[MIPS] Initial checkin for MIPS changes for GOLD.

gold/symtab.h

Index: gold/symtab.h
===================================================================
--- a/gold/symtab.h
+++ b/gold/symtab.h
@@ -255,6 +255,11 @@
   nonvis() const
   { return this->nonvis_; }
 
+  // Set the non-visibility part of the st_other field.
+  void
+  set_nonvis(unsigned int nonvis)
+  { this->nonvis_ = nonvis; }
+
   // Return whether this symbol is a forwarder.  This will never be
   // true of a symbol found in the hash table, but may be true of
   // symbol pointers attached to object files.
@@ -1565,6 +1570,11 @@
   version_script() const
   { return version_script_; }
 
+  // Return index of the first global symbol with .got entry.
+  unsigned int
+  global_got_index() const
+  { return this->global_got_index_; }
+
  private:
   Symbol_table(const Symbol_table&);
   Symbol_table& operator=(const Symbol_table&);
@@ -1887,6 +1897,12 @@
   const Version_script_info& version_script_;
   Garbage_collection* gc_;
   Icf* icf_;
+  // The dynamic symbol table is divided into local and global parts.
+  // The global part of the dynamic symbol table is further divided into
+  // two parts: symbols that do not have GOT entries associated with them
+  // and symbols that do have GOT entries associated with them. This is
+  // index of the first global symbol that has .got entry.
+  unsigned int global_got_index_;

[robertm, 2012/05/11 21:50:50]

it might be nice to also explain here why this was added, e.g.:  MIPS needs this
because ....

 };
 
 // We inline get_sized_symbol for efficiency.