1 files changed, 242 insertions, 0 deletions
diff --git a/gcc/cp/cp-lang.c b/gcc/cp/cp-lang.c
new file mode 100644
index 000000000..e5c1c0911
--- /dev/null
+++ b/gcc/cp/cp-lang.c
@@ -0,0 +1,242 @@
+/* Language-dependent hooks for C++.
+   Copyright 2001, 2002, 2004, 2007, 2008, 2009, 2010
+   Free Software Foundation, Inc.
+   Contributed by Alexandre Oliva  <aoliva@redhat.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "tree.h"
+#include "cp-tree.h"
+#include "c-family/c-common.h"
+#include "langhooks.h"
+#include "langhooks-def.h"
+#include "debug.h"
+#include "cp-objcp-common.h"
+#include "hashtab.h"
+#include "target.h"
+
+enum c_language_kind c_language = clk_cxx;
+static void cp_init_ts (void);
+static const char * cxx_dwarf_name (tree t, int verbosity);
+static enum classify_record cp_classify_record (tree type);
+static tree cp_eh_personality (void);
+static tree get_template_innermost_arguments_folded (const_tree);
+static tree get_template_argument_pack_elems_folded (const_tree);
+
+/* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
+   consequently, there should be very few hooks below.  */
+
+#undef LANG_HOOKS_NAME
+#define LANG_HOOKS_NAME "GNU C++"
+#undef LANG_HOOKS_INIT
+#define LANG_HOOKS_INIT cxx_init
+#undef LANG_HOOKS_CLASSIFY_RECORD
+#define LANG_HOOKS_CLASSIFY_RECORD cp_classify_record
+#undef LANG_HOOKS_GENERIC_TYPE_P
+#define LANG_HOOKS_GENERIC_TYPE_P class_tmpl_impl_spec_p
+
+#undef LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS
+#define LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS \
+	get_primary_template_innermost_parameters
+#undef LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS
+#define LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS \
+	get_template_innermost_arguments_folded
+#undef LANG_HOOKS_FUNCTION_PARAMETER_PACK_P
+#define LANG_HOOKS_FUNCTION_PARAMETER_PACK_P \
+	function_parameter_pack_p
+#undef LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS
+#define LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS \
+	get_template_argument_pack_elems_folded
+#undef LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P
+#define LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P \
+	template_template_parameter_p
+#undef LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P
+#define LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P \
+	function_parameter_expanded_from_pack_p
+#undef LANG_HOOKS_GET_GENERIC_FUNCTION_DECL
+#define LANG_HOOKS_GET_GENERIC_FUNCTION_DECL get_function_template_decl
+#undef LANG_HOOKS_DWARF_NAME
+#define LANG_HOOKS_DWARF_NAME cxx_dwarf_name
+#undef LANG_HOOKS_INIT_TS
+#define LANG_HOOKS_INIT_TS cp_init_ts
+#undef LANG_HOOKS_EH_PERSONALITY
+#define LANG_HOOKS_EH_PERSONALITY cp_eh_personality
+#undef LANG_HOOKS_EH_RUNTIME_TYPE
+#define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type
+
+/* Each front end provides its own lang hook initializer.  */
+struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
+
+/* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
+   there should be very few routines below.  */
+
+/* The following function does something real, but only in Objective-C++.  */
+
+tree
+objcp_tsubst_copy_and_build (tree t ATTRIBUTE_UNUSED,
+			     tree args ATTRIBUTE_UNUSED,
+			     tsubst_flags_t complain ATTRIBUTE_UNUSED,
+			     tree in_decl ATTRIBUTE_UNUSED,
+			     bool function_p ATTRIBUTE_UNUSED)
+{
+  return NULL_TREE;
+}
+
+
+static void
+cp_init_ts (void)
+{
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
+
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
+
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
+
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
+
+  tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
+  tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
+  tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
+
+  init_shadowed_var_for_decl ();
+
+}
+
+static const char *
+cxx_dwarf_name (tree t, int verbosity)
+{
+  gcc_assert (DECL_P (t));
+
+  if (DECL_NAME (t)
+      && (ANON_AGGRNAME_P (DECL_NAME (t)) || LAMBDANAME_P (DECL_NAME (t))))
+    return NULL;
+  if (verbosity >= 2)
+    return decl_as_string (t,
+			   TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME
+			   | TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS);
+
+  return cxx_printable_name (t, verbosity);
+}
+
+static enum classify_record
+cp_classify_record (tree type)
+{
+  if (CLASSTYPE_DECLARED_CLASS (type))
+    return RECORD_IS_CLASS;
+
+  return RECORD_IS_STRUCT;
+}
+
+static GTY(()) tree cp_eh_personality_decl;
+
+static tree
+cp_eh_personality (void)
+{
+  if (!cp_eh_personality_decl)
+    {
+      const char *lang = (pragma_java_exceptions ? "gcj" : "gxx");
+      cp_eh_personality_decl = build_personality_function (lang);
+    }
+
+  return cp_eh_personality_decl;
+}
+
+/* This is a subroutine of fold_cplus_constants.  It returns TRUE if T
+   is a C++ specific constant that needs to be folded further before
+   being passed to the debug info emitter.  */
+
+static bool
+template_arg_needs_folding (const_tree t)
+{
+  /* For now only PTRMEM_CST nodes are to be folded further.  */
+  if (TREE_CODE (t) == PTRMEM_CST)
+    return true;
+  return false;
+}
+
+/* Fold the elements of the TREE_VEC C which are C++ specific nodes
+   that would need folding so that they can be processed by the debug
+   info emitter. This is a subroutine of
+   get_template_innermost_arguments_folded and
+   get_template_argument_pack_elems_folded.  */
+
+static tree
+fold_cplus_constants (const_tree c)
+{
+  tree folded_elems, elems = CONST_CAST_TREE (c);
+  int vec_len, i;
+
+  if (elems == NULL_TREE || elems == error_mark_node)
+    return elems;
+
+  vec_len = TREE_VEC_LENGTH (elems);
+
+  /* First check if there is at least one element that needs
+     folding. If there is none, we just return ELEMS. Otherwise create
+     and return a new tree vector that contains the folded versions of
+     ELEMS. This is to avoid allocating memory if we don't need
+     to.  */
+  for (i = 0; i < vec_len; ++i)
+    {
+      if (template_arg_needs_folding (TREE_VEC_ELT (elems, i)))
+	break;
+    }
+  if (i == vec_len)
+    return elems;
+
+  folded_elems = make_tree_vec (vec_len);
+  for (i = 0; i < vec_len; ++i)
+    {
+      tree elem = TREE_VEC_ELT (elems, i);
+      TREE_VEC_ELT (folded_elems, i) =  
+	(elem && !TYPE_P (elem)) ? cplus_expand_constant (elem) : elem;
+
+    }
+  return folded_elems;
+}
+
+/* The C++ implementation of the LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS
+   hook. It returns the innermost template arguments of type T, and
+   makes sure those arguments are folded enough for the debug info
+   emitter.  */
+
+static tree
+get_template_innermost_arguments_folded (const_tree t)
+{
+  return fold_cplus_constants (get_template_innermost_arguments (t));
+}
+
+static tree
+get_template_argument_pack_elems_folded (const_tree t)
+{
+  return fold_cplus_constants (get_template_argument_pack_elems (t));
+}
+
+#include "gt-cp-cp-lang.h"
+#include "gtype-cp.h"