1 /* Language-specific hook definitions for C front end.
2 Copyright (C) 1991, 1995, 1997, 1998,
3 1999, 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
29 #include "diagnostic.h"
39 static int c_tree_printer PARAMS ((output_buffer *));
40 static int c_missing_noreturn_ok_p PARAMS ((tree));
41 static void c_init PARAMS ((void));
42 static void c_init_options PARAMS ((void));
43 static void c_post_options PARAMS ((void));
45 /* Each front end provides its own. */
46 struct lang_hooks lang_hooks = {c_init,
52 /* Post-switch processing. */
56 cpp_post_options (parse_in);
62 parse_in = cpp_create_reader (CLK_GNUC89);
64 /* Mark as "unspecified". */
65 flag_bounds_check = -1;
71 c_common_lang_init ();
73 /* If still unspecified, make it match pedantic && -std=c99. */
74 if (mesg_implicit_function_declaration < 0)
76 if (pedantic && flag_isoc99)
77 mesg_implicit_function_declaration = flag_pedantic_errors ? 2 : 1;
79 mesg_implicit_function_declaration = 0;
82 save_lang_status = &push_c_function_context;
83 restore_lang_status = &pop_c_function_context;
84 mark_lang_status = &mark_c_function_context;
85 lang_expand_expr = &c_expand_expr;
86 lang_safe_from_p = &c_safe_from_p;
87 lang_printer = &c_tree_printer;
88 lang_expand_decl_stmt = &c_expand_decl_stmt;
89 lang_missing_noreturn_ok_p = &c_missing_noreturn_ok_p;
101 print_lang_statistics ()
105 /* used by print-tree.c */
108 lang_print_xnode (file, node, indent)
109 FILE *file ATTRIBUTE_UNUSED;
110 tree node ATTRIBUTE_UNUSED;
111 int indent ATTRIBUTE_UNUSED;
115 /* Used by c-lex.c, but only for objc. */
118 lookup_interface (arg)
119 tree arg ATTRIBUTE_UNUSED;
126 tree arg ATTRIBUTE_UNUSED;
132 maybe_objc_check_decl (decl)
133 tree decl ATTRIBUTE_UNUSED;
138 maybe_objc_comptypes (lhs, rhs, reflexive)
139 tree lhs ATTRIBUTE_UNUSED;
140 tree rhs ATTRIBUTE_UNUSED;
141 int reflexive ATTRIBUTE_UNUSED;
147 maybe_objc_method_name (decl)
148 tree decl ATTRIBUTE_UNUSED;
154 maybe_building_objc_message_expr ()
160 recognize_objc_keyword ()
165 /* Used by c-typeck.c (build_external_ref), but only for objc. */
168 lookup_objc_ivar (id)
169 tree id ATTRIBUTE_UNUSED;
174 #if !defined(ASM_OUTPUT_CONSTRUCTOR) || !defined(ASM_OUTPUT_DESTRUCTOR)
175 extern tree static_ctors;
176 extern tree static_dtors;
178 static tree start_cdtor PARAMS ((int));
179 static void finish_cdtor PARAMS ((tree));
182 start_cdtor (method_type)
185 tree fnname = get_file_function_name (method_type);
186 tree void_list_node_1 = build_tree_list (NULL_TREE, void_type_node);
189 start_function (void_list_node_1,
190 build_nt (CALL_EXPR, fnname,
191 tree_cons (NULL_TREE, NULL_TREE, void_list_node_1),
193 NULL_TREE, NULL_TREE);
196 current_function_cannot_inline
197 = "static constructors and destructors cannot be inlined";
199 body = c_begin_compound_stmt ();
203 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
215 scope = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
216 block = poplevel (0, 0, 0);
217 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope)) = block;
218 SCOPE_STMT_BLOCK (TREE_VALUE (scope)) = block;
220 RECHAIN_STMTS (body, COMPOUND_BODY (body));
226 /* Called at end of parsing, but before end-of-file processing. */
231 #ifndef ASM_OUTPUT_CONSTRUCTOR
234 tree body = start_cdtor ('I');
236 for (; static_ctors; static_ctors = TREE_CHAIN (static_ctors))
237 c_expand_expr_stmt (build_function_call (TREE_VALUE (static_ctors),
243 #ifndef ASM_OUTPUT_DESTRUCTOR
246 tree body = start_cdtor ('D');
248 for (; static_dtors; static_dtors = TREE_CHAIN (static_dtors))
249 c_expand_expr_stmt (build_function_call (TREE_VALUE (static_dtors),
257 (*back_end_hook) (getdecls ());
259 if (flag_dump_translation_unit)
260 dump_node_to_file (getdecls (), flag_dump_translation_unit);
263 /* Called during diagnostic message formatting process to print a
264 source-level entity onto BUFFER. The meaning of the format specifiers
267 %F: a function declaration,
270 These format specifiers form a subset of the format specifiers set used
271 by the C++ front-end.
272 Please notice when called, the `%' part was already skipped by the
273 diagnostic machinery. */
275 c_tree_printer (buffer)
276 output_buffer *buffer;
278 tree t = va_arg (output_buffer_format_args (buffer), tree);
280 switch (*output_buffer_text_cursor (buffer))
286 const char *n = DECL_NAME (t)
287 ? (*decl_printable_name) (t, 2)
289 output_add_string (buffer, n);
299 c_missing_noreturn_ok_p (decl)
302 /* A missing noreturn is not ok for freestanding implementations and
303 ok for the `main' function in hosted implementations. */
304 return flag_hosted && MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl));