2010-03-23 Rafael Ávila de Espíndola <respindola@mozilla.com>

* plugin.cc (get_view): New.
	(Plugin::load): Pass get_view to the plugin.
	(Plugin_manager::get_view): New.

gold/ChangeLog

@@ -1,3 +1,9 @@
+2010-03-23  Rafael Ávila de Espíndola <respindola@mozilla.com>
+
+	* plugin.cc (get_view): New.
+	(Plugin::load): Pass get_view to the plugin.
+	(Plugin_manager::get_view): New.
+
 2011-03-21  Ian Lance Taylor  <iant@google.com>
 
 	* testsuite/final_layout.sh: Rewrite to not use dc.

gold/plugin.cc

@@ -68,6 +68,9 @@ add_symbols(void *handle, int nsyms, const struct ld_plugin_symbol *syms);
 static enum ld_plugin_status
 get_input_file(const void *handle, struct ld_plugin_input_file *file);
 
+static enum ld_plugin_status
+get_view(const void *handle, const void **viewp);
+
 static enum ld_plugin_status
 release_input_file(const void *handle);
 
@@ -130,7 +133,7 @@ Plugin::load()
   sscanf(ver, "%d.%d", &major, &minor);
 
   // Allocate and populate a transfer vector.
-  const int tv_fixed_size = 16;
+  const int tv_fixed_size = 17;
   int tv_size = this->args_.size() + tv_fixed_size;
   ld_plugin_tv* tv = new ld_plugin_tv[tv_size];
 
@@ -188,6 +191,10 @@ Plugin::load()
   tv[i].tv_tag = LDPT_GET_INPUT_FILE;
   tv[i].tv_u.tv_get_input_file = get_input_file;
 
+  ++i;
+  tv[i].tv_tag = LDPT_GET_VIEW;
+  tv[i].tv_u.tv_get_view = get_view;
+
   ++i;
   tv[i].tv_tag = LDPT_RELEASE_INPUT_FILE;
   tv[i].tv_u.tv_release_input_file = release_input_file;
@@ -635,6 +642,35 @@ Plugin_manager::release_input_file(unsigned int handle)
   return LDPS_OK;
 }
 
+ld_plugin_status
+Plugin_manager::get_view(unsigned int handle, const void **viewp)
+{
+  off_t offset;
+  size_t filesize;
+  Input_file *input_file;
+  if (this->objects_.size() == handle)
+    {
+      // We are being called from the claim_file hook.
+      const struct ld_plugin_input_file &f = this->plugin_input_file_;
+      offset = f.offset;
+      filesize = f.filesize;
+      input_file = this->input_file_;
+    }
+  else
+    {
+      // An already claimed file.
+      Pluginobj* obj = this->object(handle);
+      if (obj == NULL)
+        return LDPS_BAD_HANDLE;
+      offset = obj->offset();
+      filesize = obj->filesize();
+      input_file = obj->input_file();
+    }
+  *viewp = (void*) input_file->file().get_view(offset, 0, filesize, false,
+                                               false);
+  return LDPS_OK;
+}
+
 // Add a new library path.
 
 ld_plugin_status
@@ -1247,6 +1283,15 @@ release_input_file(const void* handle)
   return parameters->options().plugins()->release_input_file(obj_index);
 }
 
+static enum ld_plugin_status
+get_view(const void *handle, const void **viewp)
+{
+  gold_assert(parameters->options().has_plugins());
+  unsigned int obj_index =
+      static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle));
+  return parameters->options().plugins()->get_view(obj_index, viewp);
+}
+
 // Get the symbol resolution info for a plugin-claimed input file.
 
 static enum ld_plugin_status

gold/plugin.h

@@ -245,6 +245,9 @@ class Plugin_manager
   ld_plugin_status
   get_input_file(unsigned int handle, struct ld_plugin_input_file* file);
 
+  ld_plugin_status
+  get_view(unsigned int handle, const void **viewp);
+
   // Release an input file.
   ld_plugin_status
   release_input_file(unsigned int handle);