gdb/c-lang.c

   1 /* C language support routines for GDB, the GNU debugger.
   2
   3    Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003,
   4    2004, 2005, 2007, 2008 Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include "defs.h"
  22 #include "symtab.h"
  23 #include "gdbtypes.h"
  24 #include "expression.h"
  25 #include "parser-defs.h"
  26 #include "language.h"
  27 #include "c-lang.h"
  28 #include "valprint.h"
  29 #include "macroscope.h"
  30 #include "gdb_assert.h"
  31 #include "charset.h"
  32 #include "gdb_string.h"
  33 #include "demangle.h"
  34 #include "cp-abi.h"
  35 #include "cp-support.h"
  36
  37 extern void _initialize_c_language (void);
  38 static void c_emit_char (int c, struct ui_file * stream, int quoter);
  39
  40 /* Print the character C on STREAM as part of the contents of a literal
  41    string whose delimiter is QUOTER.  Note that that format for printing
  42    characters and strings is language specific. */
  43
  44 static void
  45 c_emit_char (int c, struct ui_file *stream, int quoter)
  46 {
  47   const char *escape;
  48   int host_char;
  49
  50   c &= 0xFF;                    /* Avoid sign bit follies */
  51
  52   escape = c_target_char_has_backslash_escape (c);
  53   if (escape)
  54     {
  55       if (quoter == '"' && strcmp (escape, "0") == 0)
  56         /* Print nulls embedded in double quoted strings as \000 to
  57            prevent ambiguity.  */
  58         fprintf_filtered (stream, "\\000");
  59       else
  60         fprintf_filtered (stream, "\\%s", escape);
  61     }
  62   else if (target_char_to_host (c, &host_char)
  63            && host_char_print_literally (host_char))
  64     {
  65       if (host_char == '\\' || host_char == quoter)
  66         fputs_filtered ("\\", stream);
  67       fprintf_filtered (stream, "%c", host_char);
  68     }
  69   else
  70     fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
  71 }
  72
  73 void
  74 c_printchar (int c, struct ui_file *stream)
  75 {
  76   fputc_filtered ('\'', stream);
  77   LA_EMIT_CHAR (c, stream, '\'');
  78   fputc_filtered ('\'', stream);
  79 }
  80
  81 /* Print the character string STRING, printing at most LENGTH characters.
  82    LENGTH is -1 if the string is nul terminated.  Each character is WIDTH bytes
  83    long.  Printing stops early if the number hits print_max; repeat counts are
  84    printed as appropriate.  Print ellipses at the end if we had to stop before
  85    printing LENGTH characters, or if FORCE_ELLIPSES.  */
  86
  87 void
  88 c_printstr (struct ui_file *stream, const gdb_byte *string,
  89             unsigned int length, int width, int force_ellipses)
  90 {
  91   unsigned int i;
  92   unsigned int things_printed = 0;
  93   int in_quotes = 0;
  94   int need_comma = 0;
  95
  96   /* If the string was not truncated due to `set print elements', and
  97      the last byte of it is a null, we don't print that, in traditional C
  98      style.  */
  99   if (!force_ellipses
 100       && length > 0
 101       && (extract_unsigned_integer (string + (length - 1) * width, width)
 102           == '\0'))
 103     length--;
 104
 105   if (length == 0)
 106     {
 107       fputs_filtered ("\"\"", stream);
 108       return;
 109     }
 110
 111   for (i = 0; i < length && things_printed < print_max; ++i)
 112     {
 113       /* Position of the character we are examining
 114          to see whether it is repeated.  */
 115       unsigned int rep1;
 116       /* Number of repetitions we have detected so far.  */
 117       unsigned int reps;
 118       unsigned long current_char;
 119
 120       QUIT;
 121
 122       if (need_comma)
 123         {
 124           fputs_filtered (", ", stream);
 125           need_comma = 0;
 126         }
 127
 128       current_char = extract_unsigned_integer (string + i * width, width);
 129
 130       rep1 = i + 1;
 131       reps = 1;
 132       while (rep1 < length
 133              && extract_unsigned_integer (string + rep1 * width, width)
 134              == current_char)
 135         {
 136           ++rep1;
 137           ++reps;
 138         }
 139
 140       if (reps > repeat_count_threshold)
 141         {
 142           if (in_quotes)
 143             {
 144               if (inspect_it)
 145                 fputs_filtered ("\\\", ", stream);
 146               else
 147                 fputs_filtered ("\", ", stream);
 148               in_quotes = 0;
 149             }
 150           LA_PRINT_CHAR (current_char, stream);
 151           fprintf_filtered (stream, _(" <repeats %u times>"), reps);
 152           i = rep1 - 1;
 153           things_printed += repeat_count_threshold;
 154           need_comma = 1;
 155         }
 156       else
 157         {
 158           if (!in_quotes)
 159             {
 160               if (inspect_it)
 161                 fputs_filtered ("\\\"", stream);
 162               else
 163                 fputs_filtered ("\"", stream);
 164               in_quotes = 1;
 165             }
 166           LA_EMIT_CHAR (current_char, stream, '"');
 167           ++things_printed;
 168         }
 169     }
 170
 171   /* Terminate the quotes if necessary.  */
 172   if (in_quotes)
 173     {
 174       if (inspect_it)
 175         fputs_filtered ("\\\"", stream);
 176       else
 177         fputs_filtered ("\"", stream);
 178     }
 179
 180   if (force_ellipses || i < length)
 181     fputs_filtered ("...", stream);
 182 }
 183 \f
 184 /* Preprocessing and parsing C and C++ expressions.  */
 185
 186
 187 /* When we find that lexptr (the global var defined in parse.c) is
 188    pointing at a macro invocation, we expand the invocation, and call
 189    scan_macro_expansion to save the old lexptr here and point lexptr
 190    into the expanded text.  When we reach the end of that, we call
 191    end_macro_expansion to pop back to the value we saved here.  The
 192    macro expansion code promises to return only fully-expanded text,
 193    so we don't need to "push" more than one level.
 194
 195    This is disgusting, of course.  It would be cleaner to do all macro
 196    expansion beforehand, and then hand that to lexptr.  But we don't
 197    really know where the expression ends.  Remember, in a command like
 198
 199      (gdb) break *ADDRESS if CONDITION
 200
 201    we evaluate ADDRESS in the scope of the current frame, but we
 202    evaluate CONDITION in the scope of the breakpoint's location.  So
 203    it's simply wrong to try to macro-expand the whole thing at once.  */
 204 static char *macro_original_text;
 205 static char *macro_expanded_text;
 206
 207
 208 void
 209 scan_macro_expansion (char *expansion)
 210 {
 211   /* We'd better not be trying to push the stack twice.  */
 212   gdb_assert (! macro_original_text);
 213   gdb_assert (! macro_expanded_text);
 214
 215   /* Save the old lexptr value, so we can return to it when we're done
 216      parsing the expanded text.  */
 217   macro_original_text = lexptr;
 218   lexptr = expansion;
 219
 220   /* Save the expanded text, so we can free it when we're finished.  */
 221   macro_expanded_text = expansion;
 222 }
 223
 224
 225 int
 226 scanning_macro_expansion (void)
 227 {
 228   return macro_original_text != 0;
 229 }
 230
 231
 232 void
 233 finished_macro_expansion (void)
 234 {
 235   /* There'd better be something to pop back to, and we better have
 236      saved a pointer to the start of the expanded text.  */
 237   gdb_assert (macro_original_text);
 238   gdb_assert (macro_expanded_text);
 239
 240   /* Pop back to the original text.  */
 241   lexptr = macro_original_text;
 242   macro_original_text = 0;
 243
 244   /* Free the expanded text.  */
 245   xfree (macro_expanded_text);
 246   macro_expanded_text = 0;
 247 }
 248
 249
 250 static void
 251 scan_macro_cleanup (void *dummy)
 252 {
 253   if (macro_original_text)
 254     finished_macro_expansion ();
 255 }
 256
 257
 258 /* We set these global variables before calling c_parse, to tell it
 259    how it to find macro definitions for the expression at hand.  */
 260 macro_lookup_ftype *expression_macro_lookup_func;
 261 void *expression_macro_lookup_baton;
 262
 263
 264 static struct macro_definition *
 265 null_macro_lookup (const char *name, void *baton)
 266 {
 267   return 0;
 268 }
 269
 270
 271 static int
 272 c_preprocess_and_parse (void)
 273 {
 274   /* Set up a lookup function for the macro expander.  */
 275   struct macro_scope *scope = 0;
 276   struct cleanup *back_to = make_cleanup (free_current_contents, &scope);
 277
 278   if (expression_context_block)
 279     scope = sal_macro_scope (find_pc_line (expression_context_pc, 0));
 280   else
 281     scope = default_macro_scope ();
 282
 283   if (scope)
 284     {
 285       expression_macro_lookup_func = standard_macro_lookup;
 286       expression_macro_lookup_baton = (void *) scope;
 287     }
 288   else
 289     {
 290       expression_macro_lookup_func = null_macro_lookup;
 291       expression_macro_lookup_baton = 0;
 292     }
 293
 294   gdb_assert (! macro_original_text);
 295   make_cleanup (scan_macro_cleanup, 0);
 296
 297   {
 298     int result = c_parse ();
 299     do_cleanups (back_to);
 300     return result;
 301   }
 302 }
 303
 304
 305 \f
 306 /* Table mapping opcodes into strings for printing operators
 307    and precedences of the operators.  */
 308
 309 const struct op_print c_op_print_tab[] =
 310 {
 311   {",", BINOP_COMMA, PREC_COMMA, 0},
 312   {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
 313   {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
 314   {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
 315   {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
 316   {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
 317   {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
 318   {"==", BINOP_EQUAL, PREC_EQUAL, 0},
 319   {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
 320   {"<=", BINOP_LEQ, PREC_ORDER, 0},
 321   {">=", BINOP_GEQ, PREC_ORDER, 0},
 322   {">", BINOP_GTR, PREC_ORDER, 0},
 323   {"<", BINOP_LESS, PREC_ORDER, 0},
 324   {">>", BINOP_RSH, PREC_SHIFT, 0},
 325   {"<<", BINOP_LSH, PREC_SHIFT, 0},
 326   {"+", BINOP_ADD, PREC_ADD, 0},
 327   {"-", BINOP_SUB, PREC_ADD, 0},
 328   {"*", BINOP_MUL, PREC_MUL, 0},
 329   {"/", BINOP_DIV, PREC_MUL, 0},
 330   {"%", BINOP_REM, PREC_MUL, 0},
 331   {"@", BINOP_REPEAT, PREC_REPEAT, 0},
 332   {"-", UNOP_NEG, PREC_PREFIX, 0},
 333   {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
 334   {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
 335   {"*", UNOP_IND, PREC_PREFIX, 0},
 336   {"&", UNOP_ADDR, PREC_PREFIX, 0},
 337   {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
 338   {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
 339   {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
 340   {NULL, 0, 0, 0}
 341 };
 342 \f
 343 enum c_primitive_types {
 344   c_primitive_type_int,
 345   c_primitive_type_long,
 346   c_primitive_type_short,
 347   c_primitive_type_char,
 348   c_primitive_type_float,
 349   c_primitive_type_double,
 350   c_primitive_type_void,
 351   c_primitive_type_long_long,
 352   c_primitive_type_signed_char,
 353   c_primitive_type_unsigned_char,
 354   c_primitive_type_unsigned_short,
 355   c_primitive_type_unsigned_int,
 356   c_primitive_type_unsigned_long,
 357   c_primitive_type_unsigned_long_long,
 358   c_primitive_type_long_double,
 359   c_primitive_type_complex,
 360   c_primitive_type_double_complex,
 361   c_primitive_type_decfloat,
 362   c_primitive_type_decdouble,
 363   c_primitive_type_declong,
 364   nr_c_primitive_types
 365 };
 366
 367 void
 368 c_language_arch_info (struct gdbarch *gdbarch,
 369                       struct language_arch_info *lai)
 370 {
 371   const struct builtin_type *builtin = builtin_type (gdbarch);
 372   lai->string_char_type = builtin->builtin_char;
 373   lai->primitive_type_vector
 374     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1,
 375                               struct type *);
 376   lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int;
 377   lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long;
 378   lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short;
 379   lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char;
 380   lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float;
 381   lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double;
 382   lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void;
 383   lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long;
 384   lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char;
 385   lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char;
 386   lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short;
 387   lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int;
 388   lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long;
 389   lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long;
 390   lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double;
 391   lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex;
 392   lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex;
 393   lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat;
 394   lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble;
 395   lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong;
 396 }
 397
 398 const struct language_defn c_language_defn =
 399 {
 400   "c",                          /* Language name */
 401   language_c,
 402   range_check_off,
 403   type_check_off,
 404   case_sensitive_on,
 405   array_row_major,
 406   &exp_descriptor_standard,
 407   c_preprocess_and_parse,
 408   c_error,
 409   null_post_parser,
 410   c_printchar,                  /* Print a character constant */
 411   c_printstr,                   /* Function to print string constant */
 412   c_emit_char,                  /* Print a single char */
 413   c_print_type,                 /* Print a type using appropriate syntax */
 414   c_val_print,                  /* Print a value using appropriate syntax */
 415   c_value_print,                /* Print a top-level value */
 416   NULL,                         /* Language specific skip_trampoline */
 417   NULL,                         /* value_of_this */
 418   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
 419   basic_lookup_transparent_type,/* lookup_transparent_type */
 420   NULL,                         /* Language specific symbol demangler */
 421   NULL,                         /* Language specific class_name_from_physname */
 422   c_op_print_tab,               /* expression operators for printing */
 423   1,                            /* c-style arrays */
 424   0,                            /* String lower bound */
 425   default_word_break_characters,
 426   default_make_symbol_completion_list,
 427   c_language_arch_info,
 428   default_print_array_index,
 429   default_pass_by_reference,
 430   LANG_MAGIC
 431 };
 432
 433 enum cplus_primitive_types {
 434   cplus_primitive_type_int,
 435   cplus_primitive_type_long,
 436   cplus_primitive_type_short,
 437   cplus_primitive_type_char,
 438   cplus_primitive_type_float,
 439   cplus_primitive_type_double,
 440   cplus_primitive_type_void,
 441   cplus_primitive_type_long_long,
 442   cplus_primitive_type_signed_char,
 443   cplus_primitive_type_unsigned_char,
 444   cplus_primitive_type_unsigned_short,
 445   cplus_primitive_type_unsigned_int,
 446   cplus_primitive_type_unsigned_long,
 447   cplus_primitive_type_unsigned_long_long,
 448   cplus_primitive_type_long_double,
 449   cplus_primitive_type_complex,
 450   cplus_primitive_type_double_complex,
 451   cplus_primitive_type_bool,
 452   cplus_primitive_type_decfloat,
 453   cplus_primitive_type_decdouble,
 454   cplus_primitive_type_declong,
 455   nr_cplus_primitive_types
 456 };
 457
 458 static void
 459 cplus_language_arch_info (struct gdbarch *gdbarch,
 460                           struct language_arch_info *lai)
 461 {
 462   const struct builtin_type *builtin = builtin_type (gdbarch);
 463   lai->string_char_type = builtin->builtin_char;
 464   lai->primitive_type_vector
 465     = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1,
 466                               struct type *);
 467   lai->primitive_type_vector [cplus_primitive_type_int]
 468     = builtin->builtin_int;
 469   lai->primitive_type_vector [cplus_primitive_type_long]
 470     = builtin->builtin_long;
 471   lai->primitive_type_vector [cplus_primitive_type_short]
 472     = builtin->builtin_short;
 473   lai->primitive_type_vector [cplus_primitive_type_char]
 474     = builtin->builtin_char;
 475   lai->primitive_type_vector [cplus_primitive_type_float]
 476     = builtin->builtin_float;
 477   lai->primitive_type_vector [cplus_primitive_type_double]
 478     = builtin->builtin_double;
 479   lai->primitive_type_vector [cplus_primitive_type_void]
 480     = builtin->builtin_void;
 481   lai->primitive_type_vector [cplus_primitive_type_long_long]
 482     = builtin->builtin_long_long;
 483   lai->primitive_type_vector [cplus_primitive_type_signed_char]
 484     = builtin->builtin_signed_char;
 485   lai->primitive_type_vector [cplus_primitive_type_unsigned_char]
 486     = builtin->builtin_unsigned_char;
 487   lai->primitive_type_vector [cplus_primitive_type_unsigned_short]
 488     = builtin->builtin_unsigned_short;
 489   lai->primitive_type_vector [cplus_primitive_type_unsigned_int]
 490     = builtin->builtin_unsigned_int;
 491   lai->primitive_type_vector [cplus_primitive_type_unsigned_long]
 492     = builtin->builtin_unsigned_long;
 493   lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long]
 494     = builtin->builtin_unsigned_long_long;
 495   lai->primitive_type_vector [cplus_primitive_type_long_double]
 496     = builtin->builtin_long_double;
 497   lai->primitive_type_vector [cplus_primitive_type_complex]
 498     = builtin->builtin_complex;
 499   lai->primitive_type_vector [cplus_primitive_type_double_complex]
 500     = builtin->builtin_double_complex;
 501   lai->primitive_type_vector [cplus_primitive_type_bool]
 502     = builtin->builtin_bool;
 503   lai->primitive_type_vector [cplus_primitive_type_decfloat]
 504     = builtin->builtin_decfloat;
 505   lai->primitive_type_vector [cplus_primitive_type_decdouble]
 506     = builtin->builtin_decdouble;
 507   lai->primitive_type_vector [cplus_primitive_type_declong]
 508     = builtin->builtin_declong;
 509 }
 510
 511 const struct language_defn cplus_language_defn =
 512 {
 513   "c++",                        /* Language name */
 514   language_cplus,
 515   range_check_off,
 516   type_check_off,
 517   case_sensitive_on,
 518   array_row_major,
 519   &exp_descriptor_standard,
 520   c_preprocess_and_parse,
 521   c_error,
 522   null_post_parser,
 523   c_printchar,                  /* Print a character constant */
 524   c_printstr,                   /* Function to print string constant */
 525   c_emit_char,                  /* Print a single char */
 526   c_print_type,                 /* Print a type using appropriate syntax */
 527   c_val_print,                  /* Print a value using appropriate syntax */
 528   c_value_print,                /* Print a top-level value */
 529   cplus_skip_trampoline,        /* Language specific skip_trampoline */
 530   value_of_this,                /* value_of_this */
 531   cp_lookup_symbol_nonlocal,    /* lookup_symbol_nonlocal */
 532   cp_lookup_transparent_type,   /* lookup_transparent_type */
 533   cplus_demangle,               /* Language specific symbol demangler */
 534   cp_class_name_from_physname,  /* Language specific class_name_from_physname */
 535   c_op_print_tab,               /* expression operators for printing */
 536   1,                            /* c-style arrays */
 537   0,                            /* String lower bound */
 538   default_word_break_characters,
 539   default_make_symbol_completion_list,
 540   cplus_language_arch_info,
 541   default_print_array_index,
 542   cp_pass_by_reference,
 543   LANG_MAGIC
 544 };
 545
 546 const struct language_defn asm_language_defn =
 547 {
 548   "asm",                        /* Language name */
 549   language_asm,
 550   range_check_off,
 551   type_check_off,
 552   case_sensitive_on,
 553   array_row_major,
 554   &exp_descriptor_standard,
 555   c_preprocess_and_parse,
 556   c_error,
 557   null_post_parser,
 558   c_printchar,                  /* Print a character constant */
 559   c_printstr,                   /* Function to print string constant */
 560   c_emit_char,                  /* Print a single char */
 561   c_print_type,                 /* Print a type using appropriate syntax */
 562   c_val_print,                  /* Print a value using appropriate syntax */
 563   c_value_print,                /* Print a top-level value */
 564   NULL,                         /* Language specific skip_trampoline */
 565   NULL,                         /* value_of_this */
 566   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
 567   basic_lookup_transparent_type,/* lookup_transparent_type */
 568   NULL,                         /* Language specific symbol demangler */
 569   NULL,                         /* Language specific class_name_from_physname */
 570   c_op_print_tab,               /* expression operators for printing */
 571   1,                            /* c-style arrays */
 572   0,                            /* String lower bound */
 573   default_word_break_characters,
 574   default_make_symbol_completion_list,
 575   c_language_arch_info, /* FIXME: la_language_arch_info.  */
 576   default_print_array_index,
 577   default_pass_by_reference,
 578   LANG_MAGIC
 579 };
 580
 581 /* The following language_defn does not represent a real language.
 582    It just provides a minimal support a-la-C that should allow users
 583    to do some simple operations when debugging applications that use
 584    a language currently not supported by GDB.  */
 585
 586 const struct language_defn minimal_language_defn =
 587 {
 588   "minimal",                    /* Language name */
 589   language_minimal,
 590   range_check_off,
 591   type_check_off,
 592   case_sensitive_on,
 593   array_row_major,
 594   &exp_descriptor_standard,
 595   c_preprocess_and_parse,
 596   c_error,
 597   null_post_parser,
 598   c_printchar,                  /* Print a character constant */
 599   c_printstr,                   /* Function to print string constant */
 600   c_emit_char,                  /* Print a single char */
 601   c_print_type,                 /* Print a type using appropriate syntax */
 602   c_val_print,                  /* Print a value using appropriate syntax */
 603   c_value_print,                /* Print a top-level value */
 604   NULL,                         /* Language specific skip_trampoline */
 605   NULL,                         /* value_of_this */
 606   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
 607   basic_lookup_transparent_type,/* lookup_transparent_type */
 608   NULL,                         /* Language specific symbol demangler */
 609   NULL,                         /* Language specific class_name_from_physname */
 610   c_op_print_tab,               /* expression operators for printing */
 611   1,                            /* c-style arrays */
 612   0,                            /* String lower bound */
 613   default_word_break_characters,
 614   default_make_symbol_completion_list,
 615   c_language_arch_info,
 616   default_print_array_index,
 617   default_pass_by_reference,
 618   LANG_MAGIC
 619 };
 620
 621 void
 622 _initialize_c_language (void)
 623 {
 624   add_language (&c_language_defn);
 625   add_language (&cplus_language_defn);
 626   add_language (&asm_language_defn);
 627   add_language (&minimal_language_defn);
 628 }