// object.h -- support for an object file for linking in gold -*- C++ -*-
-// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012
+// Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
class Dynobj;
class Object_merge_map;
class Relocatable_relocs;
-class Symbols_data;
+struct Symbols_data;
template<typename Stringpool_char>
class Stringpool_template;
section_size_type* uncompressed_size) const
{ return this->do_section_is_compressed(shndx, uncompressed_size); }
+ // Return a view of the decompressed contents of a section. Set *PLEN
+ // to the size. Set *IS_NEW to true if the contents need to be freed
+ // by the caller.
+ const unsigned char*
+ decompressed_section_contents(unsigned int shndx, section_size_type* plen,
+ bool* is_cached)
+ { return this->do_decompressed_section_contents(shndx, plen, is_cached); }
+
+ // Discard any buffers of decompressed sections. This is done
+ // at the end of the Add_symbols task.
+ void
+ discard_decompressed_sections()
+ { this->do_discard_decompressed_sections(); }
+
// Return the index of the first incremental relocation for symbol SYMNDX.
unsigned int
get_incremental_reloc_base(unsigned int symndx) const
// Return the location of the contents of a section. Implemented by
// child class.
- virtual Location
- do_section_contents(unsigned int shndx) = 0;
+ virtual const unsigned char*
+ do_section_contents(unsigned int shndx, section_size_type* plen,
+ bool cache) = 0;
// Get the size of a section--implemented by child class.
virtual uint64_t
do_section_is_compressed(unsigned int, section_size_type*) const
{ return false; }
+ // Return a view of the decompressed contents of a section. Set *PLEN
+ // to the size. This default implementation simply returns the
+ // raw section contents and sets *IS_NEW to false to indicate
+ // that the contents do not need to be freed by the caller.
+ // This function must be overridden for any types of object files
+ // that might contain compressed sections.
+ virtual const unsigned char*
+ do_decompressed_section_contents(unsigned int shndx,
+ section_size_type* plen,
+ bool* is_new)
+ {
+ *is_new = false;
+ return this->do_section_contents(shndx, plen, false);
+ }
+
+ // Discard any buffers of decompressed sections. This is done
+ // at the end of the Add_symbols task.
+ virtual void
+ do_discard_decompressed_sections()
+ { }
+
// Return the index of the first incremental relocation for symbol SYMNDX--
// implemented by child class.
virtual unsigned int
std::vector<Symbol*> vec_;
};
-// Type for mapping section index to uncompressed size.
+// Type for mapping section index to uncompressed size and contents.
-typedef std::map<unsigned int, section_size_type> Compressed_section_map;
+struct Compressed_section_info
+{
+ section_size_type size;
+ const unsigned char* contents;
+};
+typedef std::map<unsigned int, Compressed_section_info> Compressed_section_map;
// Abstract base class for a regular object file, either a real object file
// or an incremental (unchanged) object. This is size and endian specific.
{ return this->elf_file_.section_name(shndx); }
// Return the location of the contents of a section.
- Object::Location
- do_section_contents(unsigned int shndx)
- { return this->elf_file_.section_contents(shndx); }
+ const unsigned char*
+ do_section_contents(unsigned int shndx, section_size_type* plen,
+ bool cache)
+ {
+ Object::Location loc(this->elf_file_.section_contents(shndx));
+ *plen = convert_to_section_size_type(loc.data_size);
+ if (*plen == 0)
+ {
+ static const unsigned char empty[1] = { '\0' };
+ return empty;
+ }
+ return this->get_view(loc.file_offset, *plen, true, cache);
+ }
// Return section flags.
uint64_t
if (p != this->compressed_sections_->end())
{
if (uncompressed_size != NULL)
- *uncompressed_size = p->second;
+ *uncompressed_size = p->second.size;
return true;
}
return false;
}
+ // Return a view of the uncompressed contents of a section. Set *PLEN
+ // to the size. Set *IS_NEW to true if the contents need to be deleted
+ // by the caller.
+ const unsigned char*
+ do_decompressed_section_contents(unsigned int shndx,
+ section_size_type* plen,
+ bool* is_new);
+
+ // Discard any buffers of decompressed sections. This is done
+ // at the end of the Add_symbols task.
+ void
+ do_discard_decompressed_sections();
+
private:
// For convenience.
typedef Sized_relobj_file<size, big_endian> This;
std::vector<Deferred_layout> deferred_layout_;
// The list of relocation sections whose layout was deferred.
std::vector<Deferred_layout> deferred_layout_relocs_;
- // For compressed debug sections, map section index to uncompressed size.
+ // For compressed debug sections, map section index to uncompressed size
+ // and contents.
Compressed_section_map* compressed_sections_;
};