// archive.h -- archive support for gold -*- C++ -*-
-// Copyright 2006, 2007 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
#include <string>
#include <vector>
+#include "fileread.h"
#include "workqueue.h"
namespace gold
{
+class Task;
class Input_file;
class Input_objects;
class Input_group;
class Archive
{
public:
- Archive(const std::string& name, Input_file* input_file)
- : name_(name), input_file_(input_file), armap_(), extended_names_()
+ Archive(const std::string& name, Input_file* input_file,
+ bool is_thin_archive, Dirsearch* dirpath, Task* task)
+ : name_(name), input_file_(input_file), armap_(), armap_names_(),
+ extended_names_(), armap_checked_(), seen_offsets_(),
+ is_thin_archive_(is_thin_archive), dirpath_(dirpath), task_(task)
{ }
// The length of the magic string at the start of an archive.
// The magic string at the start of an archive.
static const char armag[sarmag];
+ static const char armagt[sarmag];
// The string expected at the end of an archive member header.
static const char arfmag[2];
- // The name of the object.
+ // The name of the object. This is the name used on the command
+ // line; e.g., if "-lgcc" is on the command line, this will be
+ // "gcc".
const std::string&
name() const
{ return this->name_; }
+ // The file name.
+ const std::string&
+ filename() const
+ { return this->input_file_->filename(); }
+
// Set up the archive: read the symbol map.
void
setup();
file()
{ return this->input_file_->file(); }
+ const File_read&
+ file() const
+ { return this->input_file_->file(); }
+
// Lock the underlying file.
void
- lock()
- { this->input_file_->file().lock(); }
+ lock(const Task* t)
+ { this->input_file_->file().lock(t); }
// Unlock the underlying file.
void
- unlock()
- { this->input_file_->file().unlock(); }
+ unlock(const Task* t)
+ { this->input_file_->file().unlock(t); }
// Return whether the underlying file is locked.
bool
is_locked() const
{ return this->input_file_->file().is_locked(); }
+ // Return the token, so that the task can be queued.
+ Task_token*
+ token()
+ { return this->input_file_->file().token(); }
+
+ // Release the underlying file.
+ void
+ release()
+ { this->input_file_->file().release(); }
+
+ // Clear uncached views in the underlying file.
+ void
+ clear_uncached_views()
+ { this->input_file_->file().clear_uncached_views(); }
+
+ // Whether this is a thin archive.
+ bool
+ is_thin_archive() const
+ { return this->is_thin_archive_; }
+
+ // Unlock any nested archives.
+ void
+ unlock_nested_archives();
+
// Select members from the archive as needed and add them to the
// link.
void
- add_symbols(Symbol_table*, Layout*, Input_objects*);
+ add_symbols(Symbol_table*, Layout*, Input_objects*, Mapfile*);
+
+ // Return the number of members in the archive.
+ size_t
+ count_members() const;
private:
Archive(const Archive&);
// Get a view into the underlying file.
const unsigned char*
- get_view(off_t start, off_t size, off_t* pbytes = NULL)
- { return this->input_file_->file().get_view(start, size, pbytes); }
+ get_view(off_t start, section_size_type size, bool aligned, bool cache)
+ { return this->input_file_->file().get_view(0, start, size, aligned, cache); }
// Read the archive symbol map.
void
- read_armap(off_t start, off_t size);
+ read_armap(off_t start, section_size_type size);
- // Read an archive member header at OFF. Return the size of the
- // member, and set *PNAME to the name.
+ // Read an archive member header at OFF. CACHE is whether to cache
+ // the file view. Return the size of the member, and set *PNAME to
+ // the name.
off_t
- read_header(off_t off, std::string* pname);
+ read_header(off_t off, bool cache, std::string* pname, off_t* nested_off);
// Interpret an archive header HDR at OFF. Return the size of the
// member, and set *PNAME to the name.
off_t
- interpret_header(const Archive_header* hdr, off_t off, std::string* pname);
+ interpret_header(const Archive_header* hdr, off_t off, std::string* pname,
+ off_t* nested_off) const;
// Include all the archive members in the link.
void
- include_all_members(Symbol_table*, Layout*, Input_objects*);
+ include_all_members(Symbol_table*, Layout*, Input_objects*, Mapfile*);
// Include an archive member in the link.
void
- include_member(Symbol_table*, Layout*, Input_objects*, off_t off);
+ include_member(Symbol_table*, Layout*, Input_objects*, off_t off,
+ Mapfile*, Symbol*, const char* why);
+
+ // Iterate over archive members.
+ class const_iterator;
+
+ const_iterator
+ begin() const;
+
+ const_iterator
+ end() const;
+
+ friend class const_iterator;
// An entry in the archive map of symbols to object files.
struct Armap_entry
{
- // The symbol name.
- const char* name;
- // The offset to the file.
- off_t offset;
+ // The offset to the symbol name in armap_names_.
+ off_t name_offset;
+ // The file offset to the object in the archive.
+ off_t file_offset;
};
// A simple hash code for off_t values.
{ return static_cast<size_t>(val); }
};
+ // For keeping track of open nested archives in a thin archive file.
+ typedef Unordered_map<std::string, Archive*> Nested_archive_table;
+
// Name of object as printed to user.
std::string name_;
// For reading the file.
Input_file* input_file_;
// The archive map.
std::vector<Armap_entry> armap_;
+ // The names in the archive map.
+ std::string armap_names_;
// The extended name table.
std::string extended_names_;
// Track which symbols in the archive map are for elements which are
std::vector<bool> armap_checked_;
// Track which elements have been included by offset.
Unordered_set<off_t, Seen_hash> seen_offsets_;
+ // True if this is a thin archive.
+ const bool is_thin_archive_;
+ // Table of nested archives, indexed by filename.
+ Nested_archive_table nested_archives_;
+ // The directory search path.
+ Dirsearch* dirpath_;
+ // The task reading this archive.
+ Task *task_;
};
// This class is used to read an archive and pick out the desired
{
public:
Add_archive_symbols(Symbol_table* symtab, Layout* layout,
- Input_objects* input_objects,
+ Input_objects* input_objects, Mapfile* mapfile,
Archive* archive, Input_group* input_group,
Task_token* this_blocker,
Task_token* next_blocker)
: symtab_(symtab), layout_(layout), input_objects_(input_objects),
- archive_(archive), input_group_(input_group),
+ mapfile_(mapfile), archive_(archive), input_group_(input_group),
this_blocker_(this_blocker), next_blocker_(next_blocker)
{ }
// The standard Task methods.
- Is_runnable_type
- is_runnable(Workqueue*);
+ Task_token*
+ is_runnable();
- Task_locker*
- locks(Workqueue*);
+ void
+ locks(Task_locker*);
void
run(Workqueue*);
- private:
- class Add_archive_symbols_locker;
+ std::string
+ get_name() const
+ {
+ if (this->archive_ == NULL)
+ return "Add_archive_symbols";
+ return "Add_archive_symbols " + this->archive_->file().filename();
+ }
+ private:
Symbol_table* symtab_;
Layout* layout_;
Input_objects* input_objects_;
+ Mapfile* mapfile_;
Archive* archive_;
Input_group* input_group_;
Task_token* this_blocker_;
projects / binutils-gdb.git / blobdiff