Add cast to avoid signed/unsigned warning.
[deliverable/binutils-gdb.git] / gold / archive.cc
index bbd24c8b5256e7d8605540110721f011a72c5b90..2125608e7d95214e88ce418e2cbce775a3e8c7c5 100644 (file)
@@ -73,47 +73,54 @@ const char Archive::arfmag[2] = { '`', '\n' };
 // table.
 
 void
-Archive::setup()
+Archive::setup(Task* task)
 {
+  // We need to ignore empty archives.
+  if (this->input_file_->file().filesize() == sarmag)
+    {
+      this->input_file_->file().unlock(task);
+      return;
+    }
+
   // The first member of the archive should be the symbol table.
   std::string armap_name;
-  off_t armap_size = this->read_header(sarmag, &armap_name);
-  off_t off;
+  section_size_type armap_size =
+    convert_to_section_size_type(this->read_header(sarmag, false,
+                                                  &armap_name));
+  off_t off = sarmag;
   if (armap_name.empty())
     {
       this->read_armap(sarmag + sizeof(Archive_header), armap_size);
       off = sarmag + sizeof(Archive_header) + armap_size;
     }
   else if (!this->input_file_->options().include_whole_archive())
-    {
-      fprintf(stderr, _("%s: %s: no archive symbol table (run ranlib)\n"),
-             program_name, this->name().c_str());
-      gold_exit(false);
-    }
-  else
-    off = sarmag;
+    gold_error(_("%s: no archive symbol table (run ranlib)"),
+              this->name().c_str());
 
-  // See if there is an extended name table.
+  // See if there is an extended name table.  We cache these views
+  // because it is likely that we will want to read the following
+  // header in the add_symbols routine.
   if ((off & 1) != 0)
     ++off;
   std::string xname;
-  off_t extended_size = this->read_header(off, &xname);
+  section_size_type extended_size =
+    convert_to_section_size_type(this->read_header(off, true, &xname));
   if (xname == "/")
     {
       const unsigned char* p = this->get_view(off + sizeof(Archive_header),
-                                              extended_size, false);
+                                              extended_size, true);
       const char* px = reinterpret_cast<const char*>(p);
       this->extended_names_.assign(px, extended_size);
     }
 
   // Opening the file locked it.  Unlock it now.
-  this->input_file_->file().unlock();
+  this->input_file_->file().unlock(task);
 }
 
 // Read the archive symbol map.
 
 void
-Archive::read_armap(off_t start, off_t size)
+Archive::read_armap(off_t start, section_size_type size)
 {
   // Read in the entire armap.
   const unsigned char* p = this->get_view(start, size, false);
@@ -125,12 +132,13 @@ Archive::read_armap(off_t start, off_t size)
 
   // Note that the addition is in units of sizeof(elfcpp::Elf_Word).
   const char* pnames = reinterpret_cast<const char*>(pword + nsyms);
-  off_t names_size = reinterpret_cast<const char*>(p) + size - pnames;
+  section_size_type names_size =
+    reinterpret_cast<const char*>(p) + size - pnames;
   this->armap_names_.assign(pnames, names_size);
 
   this->armap_.resize(nsyms);
 
-  off_t name_offset = 0;
+  section_offset_type name_offset = 0;
   for (unsigned int i = 0; i < nsyms; ++i)
     {
       this->armap_[i].name_offset = name_offset;
@@ -139,12 +147,9 @@ Archive::read_armap(off_t start, off_t size)
       ++pword;
     }
 
-  if (reinterpret_cast<const unsigned char*>(pnames) - p > size)
-    {
-      fprintf(stderr, _("%s: %s: bad archive symbol table names\n"),
-             program_name, this->name().c_str());
-      gold_exit(false);
-    }
+  if (static_cast<section_size_type>(name_offset) > names_size)
+    gold_error(_("%s: bad archive symbol table names"),
+              this->name().c_str());
 
   // This array keeps track of which symbols are for archive elements
   // which we have already included in the link.
@@ -156,9 +161,9 @@ Archive::read_armap(off_t start, off_t size)
 // of the member.
 
 off_t
-Archive::read_header(off_t off, std::string* pname)
+Archive::read_header(off_t off, bool cache, std::string* pname)
 {
-  const unsigned char* p = this->get_view(off, sizeof(Archive_header), false);
+  const unsigned char* p = this->get_view(off, sizeof(Archive_header), cache);
   const Archive_header* hdr = reinterpret_cast<const Archive_header*>(p);
   return this->interpret_header(hdr, off,  pname);
 }
@@ -173,10 +178,9 @@ Archive::interpret_header(const Archive_header* hdr, off_t off,
 {
   if (memcmp(hdr->ar_fmag, arfmag, sizeof arfmag) != 0)
     {
-      fprintf(stderr, _("%s; %s: malformed archive header at %ld\n"),
-             program_name, this->name().c_str(),
-             static_cast<long>(off));
-      gold_exit(false);
+      gold_error(_("%s: malformed archive header at %zu"),
+                this->name().c_str(), static_cast<size_t>(off));
+      return this->input_file_->file().filesize() - off;
     }
 
   const int size_string_size = sizeof hdr->ar_size;
@@ -194,10 +198,9 @@ Archive::interpret_header(const Archive_header* hdr, off_t off,
       || member_size < 0
       || (member_size == LONG_MAX && errno == ERANGE))
     {
-      fprintf(stderr, _("%s: %s: malformed archive header size at %ld\n"),
-             program_name, this->name().c_str(),
-             static_cast<long>(off));
-      gold_exit(false);
+      gold_error(_("%s: malformed archive header size at %zu"),
+                this->name().c_str(), static_cast<size_t>(off));
+      return this->input_file_->file().filesize() - off;
     }
 
   if (hdr->ar_name[0] != '/')
@@ -206,10 +209,9 @@ Archive::interpret_header(const Archive_header* hdr, off_t off,
       if (name_end == NULL
          || name_end - hdr->ar_name >= static_cast<int>(sizeof hdr->ar_name))
        {
-         fprintf(stderr, _("%s: %s: malformed archive header name at %ld\n"),
-                 program_name, this->name().c_str(),
-                 static_cast<long>(off));
-         gold_exit(false);
+         gold_error(_("%s: malformed archive header name at %zu"),
+                    this->name().c_str(), static_cast<size_t>(off));
+         return this->input_file_->file().filesize() - off;
        }
       pname->assign(hdr->ar_name, name_end - hdr->ar_name);
     }
@@ -232,10 +234,9 @@ Archive::interpret_header(const Archive_header* hdr, off_t off,
          || (x == LONG_MAX && errno == ERANGE)
          || static_cast<size_t>(x) >= this->extended_names_.size())
        {
-         fprintf(stderr, _("%s: %s: bad extended name index at %ld\n"),
-                 program_name, this->name().c_str(),
-                 static_cast<long>(off));
-         gold_exit(false);
+         gold_error(_("%s: bad extended name index at %zu"),
+                    this->name().c_str(), static_cast<size_t>(off));
+         return this->input_file_->file().filesize() - off;
        }
 
       const char* name = this->extended_names_.data() + x;
@@ -243,10 +244,9 @@ Archive::interpret_header(const Archive_header* hdr, off_t off,
       if (static_cast<size_t>(name_end - name) > this->extended_names_.size()
          || name_end[1] != '\n')
        {
-         fprintf(stderr, _("%s: %s: bad extended name entry at header %ld\n"),
-                 program_name, this->name().c_str(),
-                 static_cast<long>(off));
-         gold_exit(false);
+         gold_error(_("%s: bad extended name entry at header %zu"),
+                    this->name().c_str(), static_cast<size_t>(off));
+         return this->input_file_->file().filesize() - off;
        }
       pname->assign(name, name_end - name);
     }
@@ -334,16 +334,11 @@ Archive::include_all_members(Symbol_table* symtab, Layout* layout,
   off_t filesize = this->input_file_->file().filesize();
   while (true)
     {
-      if (filesize - off < sizeof(Archive_header))
+      if (filesize - off < static_cast<off_t>(sizeof(Archive_header)))
         {
           if (filesize != off)
-            {
-              fprintf(stderr, _("%s: %s: short archive header at %ld\n"),
-                      program_name, this->name().c_str(),
-                      static_cast<long>(off));
-              gold_exit(false);
-            }
-
+           gold_error(_("%s: short archive header at %zu"),
+                      this->name().c_str(), static_cast<size_t>(off));
           break;
         }
 
@@ -379,9 +374,9 @@ Archive::include_member(Symbol_table* symtab, Layout* layout,
                        Input_objects* input_objects, off_t off)
 {
   std::string n;
-  this->read_header(off, &n);
+  this->read_header(off, false, &n);
 
-  size_t memoff = off + sizeof(Archive_header);
+  const off_t memoff = off + static_cast<off_t>(sizeof(Archive_header));
 
   // Read enough of the file to pick up the entire ELF header.
   unsigned char ehdr_buf[elfcpp::Elf_sizes<64>::ehdr_size];
@@ -393,10 +388,9 @@ Archive::include_member(Symbol_table* symtab, Layout* layout,
 
   if (read_size < 4)
     {
-      fprintf(stderr, _("%s: %s: member at %ld is not an ELF object"),
-             program_name, this->name().c_str(),
-             static_cast<long>(off));
-      gold_exit(false);
+      gold_error(_("%s: member at %zu is not an ELF object"),
+                this->name().c_str(), static_cast<size_t>(off));
+      return;
     }
 
   this->input_file_->file().read(memoff, read_size, ehdr_buf);
@@ -408,10 +402,9 @@ Archive::include_member(Symbol_table* symtab, Layout* layout,
     };
   if (memcmp(ehdr_buf, elfmagic, 4) != 0)
     {
-      fprintf(stderr, _("%s: %s: member at %ld is not an ELF object"),
-             program_name, this->name().c_str(),
-             static_cast<long>(off));
-      gold_exit(false);
+      gold_error(_("%s: member at %zu is not an ELF object"),
+                this->name().c_str(), static_cast<size_t>(off));
+      return;
     }
 
   Object* obj = make_elf_object((std::string(this->input_file_->filename())
@@ -419,12 +412,19 @@ Archive::include_member(Symbol_table* symtab, Layout* layout,
                                this->input_file_, memoff, ehdr_buf,
                                read_size);
 
-  input_objects->add_object(obj);
+  if (input_objects->add_object(obj))
+    {
+      Read_symbols_data sd;
+      obj->read_symbols(&sd);
+      obj->layout(symtab, layout, &sd);
+      obj->add_symbols(symtab, &sd);
+    }
+  else
+    {
+      // FIXME: We need to close the descriptor here.
+      delete obj;
+    }
 
-  Read_symbols_data sd;
-  obj->read_symbols(&sd);
-  obj->layout(symtab, layout, &sd);
-  obj->add_symbols(symtab, &sd);
 }
 
 // Add_archive_symbols methods.
@@ -440,33 +440,19 @@ Add_archive_symbols::~Add_archive_symbols()
 // Return whether we can add the archive symbols.  We are blocked by
 // this_blocker_.  We block next_blocker_.  We also lock the file.
 
-Task::Is_runnable_type
-Add_archive_symbols::is_runnable(Workqueue*)
+Task_token*
+Add_archive_symbols::is_runnable()
 {
   if (this->this_blocker_ != NULL && this->this_blocker_->is_blocked())
-    return IS_BLOCKED;
-  return IS_RUNNABLE;
+    return this->this_blocker_;
+  return NULL;
 }
 
-class Add_archive_symbols::Add_archive_symbols_locker : public Task_locker
-{
- public:
-  Add_archive_symbols_locker(Task_token& token, Workqueue* workqueue,
-                            File_read& file)
-    : blocker_(token, workqueue), filelock_(file)
-  { }
-
- private:
-  Task_locker_block blocker_;
-  Task_locker_obj<File_read> filelock_;
-};
-
-Task_locker*
-Add_archive_symbols::locks(Workqueue* workqueue)
+void
+Add_archive_symbols::locks(Task_locker* tl)
 {
-  return new Add_archive_symbols_locker(*this->next_blocker_,
-                                       workqueue,
-                                       this->archive_->file());
+  tl->add(this, this->next_blocker_);
+  tl->add(this, this->archive_->token());
 }
 
 void
@@ -475,12 +461,15 @@ Add_archive_symbols::run(Workqueue*)
   this->archive_->add_symbols(this->symtab_, this->layout_,
                              this->input_objects_);
 
+  this->archive_->release();
+
   if (this->input_group_ != NULL)
     this->input_group_->add_archive(this->archive_);
   else
     {
       // We no longer need to know about this archive.
       delete this->archive_;
+      this->archive_ = NULL;
     }
 }
 
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