Reserve 1GB at the base of the address space of linux nacl_helper for Native Client module.

chrome/common/chrome_paths.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/chrome_paths.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
@@ skipping 34 matching lines @@
 const FilePath::CharType kInternalNaClPluginFileName[] =
 #if defined(OS_WIN)
     FILE_PATH_LITERAL("ppGoogleNaClPluginChrome.dll");
 #elif defined(OS_MACOSX)
     // TODO(noelallen) Please verify this extention name is correct.
     FILE_PATH_LITERAL("ppGoogleNaClPluginChrome.plugin");
 #else  // Linux and Chrome OS
     FILE_PATH_LITERAL("libppGoogleNaClPluginChrome.so");
 #endif
 
+#if defined(OS_POSIX) && !defined(OS_MACOSX)
+// File name of the nacl_helper, Linux only.
+const FilePath::CharType kInternalNaClHelperFileName[] =
+    FILE_PATH_LITERAL("nacl_helper_bootstrap");
+#endif
+
 }  // namespace
 
 namespace chrome {
 
 // Gets the path for internal plugins.
 bool GetInternalPluginsDirectory(FilePath* result) {
 #if defined(OS_MACOSX)
   // If called from Chrome, get internal plugins from a subdirectory of the
   // framework.
   if (base::mac::AmIBundled()) {
@@ skipping 162 matching lines @@
     case chrome::FILE_PDF_PLUGIN:
       if (!GetInternalPluginsDirectory(&cur))
         return false;
       cur = cur.Append(kInternalPDFPluginFileName);
       break;
     case chrome::FILE_NACL_PLUGIN:
       if (!GetInternalPluginsDirectory(&cur))
         return false;
       cur = cur.Append(kInternalNaClPluginFileName);
       break;
+#if defined(OS_POSIX) && !defined(OS_MACOSX)
+    case chrome::FILE_NACL_HELPER:
+      if (!PathService::Get(base::DIR_MODULE, &cur))
+        return false;
+      cur = cur.Append(kInternalNaClHelperFileName);
+      break;
+#endif
     case chrome::FILE_RESOURCES_PACK:
 #if defined(OS_MACOSX)
       if (base::mac::AmIBundled()) {
         cur = base::mac::MainAppBundlePath();
         cur = cur.Append(FILE_PATH_LITERAL("Resources"))
                  .Append(FILE_PATH_LITERAL("resources.pak"));
         break;
       }
       // If we're not bundled on mac, resources.pak should be next to the
       // binary (e.g., for unit tests).
@@ skipping 98 matching lines @@
   return true;
 }
 
 // This cannot be done as a static initializer sadly since Visual Studio will
 // eliminate this object file if there is no direct entry point into it.
 void RegisterPathProvider() {
   PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
 }
 
 }  // namespace chrome