/* Language-specific hook definitions for C front end.
Copyright (C) 1991, 1995, 1997, 1998,
- 1999, 2000, 2001 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2003, 2004, 2005, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+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 "function.h"
-#include "input.h"
-#include "toplev.h"
-#include "diagnostic.h"
-#include "output.h"
-#include "flags.h"
-#include "ggc.h"
-#include "rtl.h"
-#include "expr.h"
#include "c-tree.h"
-#include "c-lex.h"
-#include "cpplib.h"
+#include "c-family/c-common.h"
+#include "langhooks.h"
+#include "langhooks-def.h"
+#include "tree-inline.h"
+#include "diagnostic-core.h"
+#include "c-objc-common.h"
+#include "c-family/c-pragma.h"
-static int c_tree_printer PARAMS ((output_buffer *));
-static int c_missing_noreturn_ok_p PARAMS ((tree));
-static void c_init PARAMS ((void));
-static void c_init_options PARAMS ((void));
-static void c_post_options PARAMS ((void));
+enum c_language_kind c_language = clk_c;
-/* Each front end provides its own. */
-struct lang_hooks lang_hooks = {c_init,
- NULL, /* c_finish */
- c_init_options,
- c_decode_option,
- c_post_options};
+/* Lang hooks common to C and ObjC are declared in c-objc-common.h;
+ consequently, there should be very few hooks below. */
-/* Post-switch processing. */
-static void
-c_post_options ()
-{
- cpp_post_options (parse_in);
-}
+#undef LANG_HOOKS_NAME
+#define LANG_HOOKS_NAME "GNU C"
+#undef LANG_HOOKS_INIT
+#define LANG_HOOKS_INIT c_objc_common_init
-static void
-c_init_options ()
-{
- /* Make identifier nodes long enough for the language-specific slots. */
- set_identifier_size (sizeof (struct lang_identifier));
+/* Each front end provides its own lang hook initializer. */
+struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
- parse_in = cpp_create_reader (ident_hash, CLK_GNUC89);
-
- /* Mark as "unspecified". */
- flag_bounds_check = -1;
-}
-
-static void
-c_init ()
-{
- c_common_lang_init ();
-
- /* If still unspecified, make it match -std=c99
- (allowing for -pedantic-errors). */
- if (mesg_implicit_function_declaration < 0)
- {
- if (flag_isoc99)
- mesg_implicit_function_declaration = flag_pedantic_errors ? 2 : 1;
- else
- mesg_implicit_function_declaration = 0;
- }
-
- save_lang_status = &push_c_function_context;
- restore_lang_status = &pop_c_function_context;
- mark_lang_status = &mark_c_function_context;
- lang_expand_expr = &c_expand_expr;
- lang_safe_from_p = &c_safe_from_p;
- diagnostic_format_decoder (global_dc) = &c_tree_printer;
- lang_expand_decl_stmt = &c_expand_decl_stmt;
- lang_missing_noreturn_ok_p = &c_missing_noreturn_ok_p;
-
- c_parse_init ();
-}
-
-const char *
-lang_identify ()
-{
- return "c";
-}
-
-void
-print_lang_statistics ()
-{
-}
-
-/* used by print-tree.c */
-
-void
-lang_print_xnode (file, node, indent)
- FILE *file ATTRIBUTE_UNUSED;
- tree node ATTRIBUTE_UNUSED;
- int indent ATTRIBUTE_UNUSED;
-{
-}
-
-/* Used by c-lex.c, but only for objc. */
-
-tree
-lookup_interface (arg)
- tree arg ATTRIBUTE_UNUSED;
-{
- return 0;
-}
-
-tree
-is_class_name (arg)
- tree arg ATTRIBUTE_UNUSED;
-{
- return 0;
-}
-
-void
-maybe_objc_check_decl (decl)
- tree decl ATTRIBUTE_UNUSED;
-{
-}
-
-int
-maybe_objc_comptypes (lhs, rhs, reflexive)
- tree lhs ATTRIBUTE_UNUSED;
- tree rhs ATTRIBUTE_UNUSED;
- int reflexive ATTRIBUTE_UNUSED;
-{
- return -1;
-}
-
-tree
-maybe_building_objc_message_expr ()
-{
- return 0;
-}
-
-int
-recognize_objc_keyword ()
-{
- return 0;
-}
-
-/* Used by c-typeck.c (build_external_ref), but only for objc. */
-
-tree
-lookup_objc_ivar (id)
- tree id ATTRIBUTE_UNUSED;
-{
- return 0;
-}
-
-#if !defined(ASM_OUTPUT_CONSTRUCTOR) || !defined(ASM_OUTPUT_DESTRUCTOR)
-extern tree static_ctors;
-extern tree static_dtors;
-
-static tree start_cdtor PARAMS ((int));
-static void finish_cdtor PARAMS ((tree));
-
-static tree
-start_cdtor (method_type)
- int method_type;
-{
- tree fnname = get_file_function_name (method_type);
- tree void_list_node_1 = build_tree_list (NULL_TREE, void_type_node);
- tree body;
-
- start_function (void_list_node_1,
- build_nt (CALL_EXPR, fnname,
- tree_cons (NULL_TREE, NULL_TREE, void_list_node_1),
- NULL_TREE),
- NULL_TREE);
- store_parm_decls ();
-
- current_function_cannot_inline
- = "static constructors and destructors cannot be inlined";
-
- body = c_begin_compound_stmt ();
-
- pushlevel (0);
- clear_last_expr ();
- add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
-
- return body;
-}
-
-static void
-finish_cdtor (body)
- tree body;
-{
- tree scope;
- tree block;
-
- scope = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
- block = poplevel (0, 0, 0);
- SCOPE_STMT_BLOCK (TREE_PURPOSE (scope)) = block;
- SCOPE_STMT_BLOCK (TREE_VALUE (scope)) = block;
-
- RECHAIN_STMTS (body, COMPOUND_BODY (body));
-
- finish_function (0);
-}
-#endif
-
-/* Called at end of parsing, but before end-of-file processing. */
-
-void
-finish_file ()
-{
-#ifndef ASM_OUTPUT_CONSTRUCTOR
- if (static_ctors)
- {
- tree body = start_cdtor ('I');
-
- for (; static_ctors; static_ctors = TREE_CHAIN (static_ctors))
- c_expand_expr_stmt (build_function_call (TREE_VALUE (static_ctors),
- NULL_TREE));
-
- finish_cdtor (body);
- }
-#endif
-#ifndef ASM_OUTPUT_DESTRUCTOR
- if (static_dtors)
- {
- tree body = start_cdtor ('D');
-
- for (; static_dtors; static_dtors = TREE_CHAIN (static_dtors))
- c_expand_expr_stmt (build_function_call (TREE_VALUE (static_dtors),
- NULL_TREE));
-
- finish_cdtor (body);
- }
-#endif
-
- if (back_end_hook)
- (*back_end_hook) (getdecls ());
-
- {
- int flags;
- FILE *stream = dump_begin (TDI_all, &flags);
-
- if (stream)
- {
- dump_node (getdecls (), flags & ~TDF_SLIM, stream);
- dump_end (TDI_all, stream);
- }
- }
-}
-
-/* Called during diagnostic message formatting process to print a
- source-level entity onto BUFFER. The meaning of the format specifiers
- is as follows:
- %D: a general decl,
- %F: a function declaration,
- %T: a type.
-
- These format specifiers form a subset of the format specifiers set used
- by the C++ front-end.
- Please notice when called, the `%' part was already skipped by the
- diagnostic machinery. */
-static int
-c_tree_printer (buffer)
- output_buffer *buffer;
-{
- tree t = va_arg (output_buffer_format_args (buffer), tree);
-
- switch (*output_buffer_text_cursor (buffer))
- {
- case 'D':
- case 'F':
- case 'T':
- {
- const char *n = DECL_NAME (t)
- ? (*decl_printable_name) (t, 2)
- : "({anonymous})";
- output_add_string (buffer, n);
- }
- return 1;
-
- default:
- return 0;
- }
-}
-
-static int
-c_missing_noreturn_ok_p (decl)
- tree decl;
-{
- /* A missing noreturn is not ok for freestanding implementations and
- ok for the `main' function in hosted implementations. */
- return flag_hosted && MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl));
-}
+#include "gtype-c.h"
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