gdb/

[deliverable/binutils-gdb.git] / gold / target.h

diff --git a/gold/target.h b/gold/target.h
index fa18fc7a356a1e49647a2d4d3dba10b81c8469b3..79111ce188228652b9eea70af25a79b80e08621b 100644 (file)
--- a/gold/target.h
+++ b/gold/target.h
@@ -1,6 +1,6 @@
 // target.h -- target support for gold   -*- C++ -*-
 
-// Copyright 2006, 2007 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -34,6 +34,7 @@
 #define GOLD_TARGET_H
 
 #include "elfcpp.h"
+#include "options.h"
 #include "parameters.h"
 
 namespace gold
@@ -105,8 +106,8 @@ class Target
   uint64_t
   abi_pagesize() const
   {
-    if (parameters->max_page_size() > 0)
-      return parameters->max_page_size();
+    if (parameters->options().max_page_size() > 0)
+      return parameters->options().max_page_size();
     else
       return this->pti_->abi_pagesize;
   }
@@ -115,8 +116,8 @@ class Target
   uint64_t
   common_pagesize() const
   {
-    if (parameters->common_page_size() > 0)
-      return std::min(parameters->common_page_size(),
+    if (parameters->options().common_page_size() > 0)
+      return std::min(parameters->options().common_page_size(),
                      this->abi_pagesize());
     else
       return std::min(this->pti_->common_pagesize,
@@ -131,6 +132,15 @@ class Target
   is_default_stack_executable() const
   { return this->pti_->is_default_stack_executable; }
 
+  // Return a character which may appear as a prefix for a wrap
+  // symbol.  If this character appears, we strip it when checking for
+  // wrapping and add it back when forming the final symbol name.
+  // This should be '\0' if not special prefix is required, which is
+  // the normal case.
+  char
+  wrap_char() const
+  { return this->pti_->wrap_char; }
+
   // This is called to tell the target to complete any sections it is
   // handling.  After this all sections must have their final size.
   void
@@ -148,13 +158,13 @@ class Target
   // basically one or more NOPS which must fill out the specified
   // length in bytes.
   std::string
-  code_fill(section_size_type length)
+  code_fill(section_size_type length) const
   { return this->do_code_fill(length); }
 
   // Return whether SYM is known to be defined by the ABI.  This is
   // used to avoid inappropriate warnings about undefined symbols.
   bool
-  is_defined_by_abi(Symbol* sym) const
+  is_defined_by_abi(const Symbol* sym) const
   { return this->do_is_defined_by_abi(sym); }
 
  protected:
@@ -178,6 +188,8 @@ class Target
     // Whether an object file with no .note.GNU-stack sections implies
     // that the stack should be executable.
     bool is_default_stack_executable;
+    // Prefix character to strip when checking for wrapping.
+    char wrap_char;
     // The default dynamic linker name.
     const char* dynamic_linker;
     // The default text segment address.
@@ -205,12 +217,12 @@ class Target
   // Virtual function which must be implemented by the child class if
   // needed.
   virtual std::string
-  do_code_fill(section_size_type)
+  do_code_fill(section_size_type) const
   { gold_unreachable(); }
 
   // Virtual function which may be implemented by the child class.
   virtual bool
-  do_is_defined_by_abi(Symbol*) const
+  do_is_defined_by_abi(const Symbol*) const
   { return false; }
 
  private:
@@ -247,6 +259,24 @@ class Sized_target : public Target
          const char*)
   { gold_unreachable(); }
 
+  // Process the relocs for a section, and record information of the
+  // mapping from source to destination sections. This mapping is later
+  // used to determine unreferenced garbage sections. This procedure is
+  // only called during garbage collection.
+  virtual void
+  gc_process_relocs(const General_options& options,
+             Symbol_table* symtab,
+             Layout* layout,
+             Sized_relobj<size, big_endian>* object,
+             unsigned int data_shndx,
+             unsigned int sh_type,
+             const unsigned char* prelocs,
+             size_t reloc_count,
+             Output_section* output_section,
+             bool needs_special_offset_handling,
+             size_t local_symbol_count,
+             const unsigned char* plocal_symbols) = 0;
+
   // Scan the relocs for a section, and record any information
   // required for the symbol.  OPTIONS is the command line options.
   // SYMTAB is the symbol table.  OBJECT is the object in which the