elfcpp/ChangeLog:
[deliverable/binutils-gdb.git] / gold / plugin.cc
index 2ee1301a537a735ddf0eab525210d4435c92c2e7..468006701d9bb7a30ee83f64a61c8dfeb28a03ca 100644 (file)
@@ -75,10 +75,13 @@ static enum ld_plugin_status
 get_symbols(const void *handle, int nsyms, struct ld_plugin_symbol *syms);
 
 static enum ld_plugin_status
-add_input_file(char *pathname);
+add_input_file(const char *pathname);
 
 static enum ld_plugin_status
-add_input_library(char *pathname);
+add_input_library(const char *pathname);
+
+static enum ld_plugin_status
+set_extra_library_path(const char *path);
 
 static enum ld_plugin_status
 message(int level, const char *format, ...);
@@ -103,8 +106,8 @@ Plugin::load()
   this->handle_ = dlopen(this->filename_.c_str(), RTLD_NOW);
   if (this->handle_ == NULL)
     {
-      gold_error(_("%s: could not load plugin library"),
-                 this->filename_.c_str());
+      gold_error(_("%s: could not load plugin library: %s"),
+                 this->filename_.c_str(), dlerror());
       return;
     }
 
@@ -127,7 +130,7 @@ Plugin::load()
   sscanf(ver, "%d.%d", &major, &minor);
 
   // Allocate and populate a transfer vector.
-  const int tv_fixed_size = 14;
+  const int tv_fixed_size = 16;
   int tv_size = this->args_.size() + tv_fixed_size;
   ld_plugin_tv *tv = new ld_plugin_tv[tv_size];
 
@@ -154,6 +157,10 @@ Plugin::load()
   else
     tv[i].tv_u.tv_val = LDPO_EXEC;
 
+  ++i;
+  tv[i].tv_tag = LDPT_OUTPUT_NAME;
+  tv[i].tv_u.tv_string = parameters->options().output();
+
   for (unsigned int j = 0; j < this->args_.size(); ++j)
     {
       ++i;
@@ -197,6 +204,10 @@ Plugin::load()
   tv[i].tv_tag = LDPT_ADD_INPUT_LIBRARY;
   tv[i].tv_u.tv_add_input_library = add_input_library;
 
+  ++i;
+  tv[i].tv_tag = LDPT_SET_EXTRA_LIBRARY_PATH;
+  tv[i].tv_u.tv_set_extra_library_path = set_extra_library_path;
+
   ++i;
   tv[i].tv_tag = LDPT_NULL;
   tv[i].tv_u.tv_val = 0;
@@ -414,20 +425,33 @@ Plugin_manager::release_input_file(unsigned int handle)
   return LDPS_OK;
 }
 
+// Add a new library path.
+
+ld_plugin_status
+Plugin_manager::set_extra_library_path(const char *path)
+{
+  this->extra_search_path_ = std::string(path);
+  return LDPS_OK;
+}
+
 // Add a new input file.
 
 ld_plugin_status
-Plugin_manager::add_input_file(char *pathname, bool is_lib)
+Plugin_manager::add_input_file(const char *pathname, bool is_lib)
 {
   Input_file_argument file(pathname,
                            (is_lib
                             ? Input_file_argument::INPUT_FILE_TYPE_LIBRARY
                             : Input_file_argument::INPUT_FILE_TYPE_FILE),
-                           "", false, this->options_);
+                           (is_lib
+                            ? this->extra_search_path_.c_str()
+                            : ""),
+                           false,
+                           this->options_);
   Input_argument* input_argument = new Input_argument(file);
   Task_token* next_blocker = new Task_token(true);
   next_blocker->add_blocker();
-  if (this->layout_->incremental_inputs())
+  if (parameters->options().incremental())
     gold_error(_("input files added by plug-ins in --incremental mode not "
                 "supported yet"));
   this->workqueue_->queue_soon(new Read_symbols(this->input_objects_,
@@ -647,13 +671,13 @@ Sized_pluginobj<size, big_endian>::do_add_symbols(Symbol_table* symtab,
       switch (isym->visibility)
         {
         case LDPV_PROTECTED:
-          vis = elfcpp::STV_DEFAULT;
+          vis = elfcpp::STV_PROTECTED;
           break;
         case LDPV_INTERNAL:
-          vis = elfcpp::STV_DEFAULT;
+          vis = elfcpp::STV_INTERNAL;
           break;
         case LDPV_HIDDEN:
-          vis = elfcpp::STV_DEFAULT;
+          vis = elfcpp::STV_HIDDEN;
           break;
         case LDPV_DEFAULT:
         default:
@@ -681,26 +705,32 @@ Sized_pluginobj<size, big_endian>::do_add_symbols(Symbol_table* symtab,
 template<int size, bool big_endian>
 Archive::Should_include
 Sized_pluginobj<size, big_endian>::do_should_include_member(
-    Symbol_table* symtab, Read_symbols_data*, std::string* why)
+    Symbol_table* symtab,
+    Layout* layout,
+    Read_symbols_data*,
+    std::string* why)
 {
   char* tmpbuf = NULL;
   size_t tmpbuflen = 0;
 
-  for (int i = 0; i < this->nsyms_; ++i) {
-    const struct ld_plugin_symbol& sym = this->syms_[i];
-    const char* name = sym.name;
-    Symbol* symbol;
-    Archive::Should_include t = Archive::should_include_member(symtab, name,
-                                                               &symbol, why,
-                                                               &tmpbuf,
-                                                               &tmpbuflen);
+  for (int i = 0; i < this->nsyms_; ++i)
+    {
+      const struct ld_plugin_symbol& sym = this->syms_[i];
+      const char* name = sym.name;
+      Symbol* symbol;
+      Archive::Should_include t = Archive::should_include_member(symtab,
+                                                                layout,
+                                                                name,
+                                                                &symbol, why,
+                                                                &tmpbuf,
+                                                                &tmpbuflen);
       if (t == Archive::SHOULD_INCLUDE_YES)
        {
          if (tmpbuf != NULL)
            free(tmpbuf);
          return t;
        }
-  }
+    }
   if (tmpbuf != NULL)
     free(tmpbuf);
   return Archive::SHOULD_INCLUDE_UNKNOWN;
@@ -838,7 +868,10 @@ Sized_pluginobj<size, big_endian>::do_get_global_symbols() const
 }
 
 // Class Plugin_finish.  This task runs after all replacement files have
-// been added.  It calls each plugin's cleanup handler.
+// been added.  For now, it's a placeholder for a possible plugin API
+// to allow the plugin to release most of its resources.  The cleanup
+// handlers must be called later, because they can remove the temporary
+// object files that are needed until the end of the link.
 
 class Plugin_finish : public Task
 {
@@ -868,9 +901,7 @@ class Plugin_finish : public Task
   void
   run(Workqueue*)
   {
-    Plugin_manager* plugins = parameters->options().plugins();
-    gold_assert(plugins != NULL);
-    plugins->cleanup();
+    // We could call early cleanup handlers here.
   }
 
   std::string
@@ -912,6 +943,14 @@ void
 Plugin_hook::run(Workqueue* workqueue)
 {
   gold_assert(this->options_.has_plugins());
+  Symbol* start_sym;
+  if (parameters->options().entry())
+    start_sym = this->symtab_->lookup(parameters->options().entry());
+  else
+    start_sym = this->symtab_->lookup("_start");
+  if (start_sym != NULL)
+    start_sym->set_in_real_elf();
+
   this->options_.plugins()->all_symbols_read(workqueue,
                                              this,
                                              this->input_objects_,
@@ -1011,7 +1050,7 @@ get_symbols(const void * handle, int nsyms, ld_plugin_symbol* syms)
 // Add a new (real) input file generated by a plugin.
 
 static enum ld_plugin_status
-add_input_file(char *pathname)
+add_input_file(const char *pathname)
 {
   gold_assert(parameters->options().has_plugins());
   return parameters->options().plugins()->add_input_file(pathname, false);
@@ -1020,12 +1059,22 @@ add_input_file(char *pathname)
 // Add a new (real) library required by a plugin.
 
 static enum ld_plugin_status
-add_input_library(char *pathname)
+add_input_library(const char *pathname)
 {
   gold_assert(parameters->options().has_plugins());
   return parameters->options().plugins()->add_input_file(pathname, true);
 }
 
+// Set the extra library path to be used by libraries added via
+// add_input_library
+
+static enum ld_plugin_status
+set_extra_library_path(const char *path)
+{
+  gold_assert(parameters->options().has_plugins());
+  return parameters->options().plugins()->set_extra_library_path(path);
+}
+
 // Issue a diagnostic message from a plugin.
 
 static enum ld_plugin_status
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