gcc/c-lang.c

   1 /* Language-specific hook definitions for C front end.
   2    Copyright (C) 1991, 1995, 1997, 1998,
   3    1999, 2000, 2001, 2003 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "coretypes.h"
  26 #include "tm.h"
  27 #include "tree.h"
  28 #include "c-tree.h"
  29 #include "c-common.h"
  30 #include "ggc.h"
  31 #include "langhooks.h"
  32 #include "langhooks-def.h"
  33 #include "diagnostic.h"
  34 #include "c-pretty-print.h"
  35
  36 static void c_initialize_diagnostics (diagnostic_context *);
  37
  38 enum c_language_kind c_language = clk_c;
  39
  40 /* ### When changing hooks, consider if ObjC needs changing too!! ### */
  41
  42 #undef LANG_HOOKS_NAME
  43 #define LANG_HOOKS_NAME "GNU C"
  44 #undef LANG_HOOKS_INIT
  45 #define LANG_HOOKS_INIT c_objc_common_init
  46 #undef LANG_HOOKS_FINISH
  47 #define LANG_HOOKS_FINISH c_common_finish
  48 #undef LANG_HOOKS_INIT_OPTIONS
  49 #define LANG_HOOKS_INIT_OPTIONS c_common_init_options
  50 #undef LANG_HOOKS_INITIALIZE_DIAGNOSTICS
  51 #define LANG_HOOKS_INITIALIZE_DIAGNOSTICS c_initialize_diagnostics
  52 #undef LANG_HOOKS_HANDLE_OPTION
  53 #define LANG_HOOKS_HANDLE_OPTION c_common_handle_option
  54 #undef LANG_HOOKS_MISSING_ARGUMENT
  55 #define LANG_HOOKS_MISSING_ARGUMENT c_common_missing_argument
  56 #undef LANG_HOOKS_POST_OPTIONS
  57 #define LANG_HOOKS_POST_OPTIONS c_common_post_options
  58 #undef LANG_HOOKS_GET_ALIAS_SET
  59 #define LANG_HOOKS_GET_ALIAS_SET c_common_get_alias_set
  60 #undef LANG_HOOKS_SAFE_FROM_P
  61 #define LANG_HOOKS_SAFE_FROM_P c_safe_from_p
  62 #undef LANG_HOOKS_EXPAND_EXPR
  63 #define LANG_HOOKS_EXPAND_EXPR c_expand_expr
  64 #undef LANG_HOOKS_MARK_ADDRESSABLE
  65 #define LANG_HOOKS_MARK_ADDRESSABLE c_mark_addressable
  66 #undef LANG_HOOKS_PARSE_FILE
  67 #define LANG_HOOKS_PARSE_FILE c_common_parse_file
  68 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
  69 #define LANG_HOOKS_TRUTHVALUE_CONVERSION c_common_truthvalue_conversion
  70 #undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
  71 #define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
  72 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
  73 #define LANG_HOOKS_UNSAFE_FOR_REEVAL c_common_unsafe_for_reeval
  74 #undef LANG_HOOKS_STATICP
  75 #define LANG_HOOKS_STATICP c_staticp
  76 #undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
  77 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME c_static_assembler_name
  78 #undef LANG_HOOKS_NO_BODY_BLOCKS
  79 #define LANG_HOOKS_NO_BODY_BLOCKS true
  80 #undef LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL
  81 #define LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL c_warn_unused_global_decl
  82 #undef LANG_HOOKS_PRINT_IDENTIFIER
  83 #define LANG_HOOKS_PRINT_IDENTIFIER c_print_identifier
  84 #undef LANG_HOOKS_FUNCTION_ENTER_NESTED
  85 #define LANG_HOOKS_FUNCTION_ENTER_NESTED c_push_function_context
  86 #undef LANG_HOOKS_FUNCTION_LEAVE_NESTED
  87 #define LANG_HOOKS_FUNCTION_LEAVE_NESTED c_pop_function_context
  88 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
  89 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL c_dup_lang_specific_decl
  90 #undef LANG_HOOKS_DECL_UNINIT
  91 #define LANG_HOOKS_DECL_UNINIT c_decl_uninit
  92
  93 #undef LANG_HOOKS_RTL_EXPAND_STMT
  94 #define LANG_HOOKS_RTL_EXPAND_STMT expand_stmt
  95
  96 /* Attribute hooks.  */
  97 #undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
  98 #define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE c_common_attribute_table
  99 #undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
 100 #define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE c_common_format_attribute_table
 101
 102 #undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
 103 #define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
 104   c_cannot_inline_tree_fn
 105 #undef LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS
 106 #define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
 107   c_disregard_inline_limits
 108 #undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
 109 #define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
 110   anon_aggr_type_p
 111 #undef LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING
 112 #define LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
 113   c_convert_parm_for_inlining
 114 #undef LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS
 115 #define LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS c_estimate_num_insns
 116 #undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
 117 #define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN c_dump_tree
 118
 119 #undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
 120 #define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION c_expand_body
 121
 122 #undef LANG_HOOKS_TYPE_FOR_MODE
 123 #define LANG_HOOKS_TYPE_FOR_MODE c_common_type_for_mode
 124 #undef LANG_HOOKS_TYPE_FOR_SIZE
 125 #define LANG_HOOKS_TYPE_FOR_SIZE c_common_type_for_size
 126 #undef LANG_HOOKS_SIGNED_TYPE
 127 #define LANG_HOOKS_SIGNED_TYPE c_common_signed_type
 128 #undef LANG_HOOKS_UNSIGNED_TYPE
 129 #define LANG_HOOKS_UNSIGNED_TYPE c_common_unsigned_type
 130 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
 131 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE c_common_signed_or_unsigned_type
 132 #undef LANG_HOOKS_INCOMPLETE_TYPE_ERROR
 133 #define LANG_HOOKS_INCOMPLETE_TYPE_ERROR c_incomplete_type_error
 134 #undef LANG_HOOKS_TYPE_PROMOTES_TO
 135 #define LANG_HOOKS_TYPE_PROMOTES_TO c_type_promotes_to
 136
 137 #undef LANG_HOOKS_WRITE_GLOBALS
 138 #define LANG_HOOKS_WRITE_GLOBALS c_write_global_declarations
 139
 140 /* ### When changing hooks, consider if ObjC needs changing too!! ### */
 141
 142 /* Each front end provides its own.  */
 143 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
 144
 145 /* Tree code classes.  */
 146
 147 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
 148
 149 const char tree_code_type[] = {
 150 #include "tree.def"
 151   'x',
 152 #include "c-common.def"
 153 };
 154 #undef DEFTREECODE
 155
 156 /* Table indexed by tree code giving number of expression
 157    operands beyond the fixed part of the node structure.
 158    Not used for types or decls.  */
 159
 160 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
 161
 162 const unsigned char tree_code_length[] = {
 163 #include "tree.def"
 164   0,
 165 #include "c-common.def"
 166 };
 167 #undef DEFTREECODE
 168
 169 /* Names of tree components.
 170    Used for printing out the tree and error messages.  */
 171 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
 172
 173 const char *const tree_code_name[] = {
 174 #include "tree.def"
 175   "@@dummy",
 176 #include "c-common.def"
 177 };
 178 #undef DEFTREECODE
 179
 180 /* Used by c-lex.c, but only for objc.  */
 181
 182 tree
 183 lookup_interface (tree arg ATTRIBUTE_UNUSED)
 184 {
 185   return 0;
 186 }
 187
 188 tree
 189 is_class_name (tree arg ATTRIBUTE_UNUSED)
 190 {
 191   return 0;
 192 }
 193
 194 tree
 195 objc_is_id (tree arg ATTRIBUTE_UNUSED)
 196 {
 197   return 0;
 198 }
 199
 200 void
 201 objc_check_decl (tree decl ATTRIBUTE_UNUSED)
 202 {
 203 }
 204
 205 int
 206 objc_comptypes (tree lhs ATTRIBUTE_UNUSED, tree rhs ATTRIBUTE_UNUSED,
 207                 int reflexive ATTRIBUTE_UNUSED)
 208 {
 209   return -1;
 210 }
 211
 212 tree
 213 objc_message_selector (void)
 214 {
 215   return 0;
 216 }
 217
 218 /* Used by c-typeck.c (build_external_ref), but only for objc.  */
 219
 220 tree
 221 lookup_objc_ivar (tree id ATTRIBUTE_UNUSED)
 222 {
 223   return 0;
 224 }
 225
 226 void
 227 finish_file (void)
 228 {
 229   c_objc_common_finish_file ();
 230 }
 231
 232 static void
 233 c_initialize_diagnostics (diagnostic_context *context)
 234 {
 235   pretty_printer *base = context->printer;
 236   c_pretty_printer *pp = xmalloc (sizeof (c_pretty_printer));
 237   memcpy (pp_base (pp), base, sizeof (pretty_printer));
 238   pp_c_pretty_printer_init (pp);
 239   context->printer = (pretty_printer *) pp;
 240
 241   /* It is safe to free this object because it was previously malloc()'d.  */
 242   free (base);
 243 }
 244
 245
 246 #include "gtype-c.h"