| 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 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 | |
| 184 | /* Create a fundamental C type using default reasonable for the current |
| 185 | target machine. |
| 186 | |
| 187 | Some object/debugging file formats (DWARF version 1, COFF, etc) do not |
| 188 | define fundamental types such as "int" or "double". Others (stabs or |
| 189 | DWARF version 2, etc) do define fundamental types. For the formats which |
| 190 | don't provide fundamental types, gdb can create such types using this |
| 191 | function. |
| 192 | |
| 193 | FIXME: Some compilers distinguish explicitly signed integral types |
| 194 | (signed short, signed int, signed long) from "regular" integral types |
| 195 | (short, int, long) in the debugging information. There is some dis- |
| 196 | agreement as to how useful this feature is. In particular, gcc does |
| 197 | not support this. Also, only some debugging formats allow the |
| 198 | distinction to be passed on to a debugger. For now, we always just |
| 199 | use "short", "int", or "long" as the type name, for both the implicit |
| 200 | and explicitly signed types. This also makes life easier for the |
| 201 | gdb test suite since we don't have to account for the differences |
| 202 | in output depending upon what the compiler and debugging format |
| 203 | support. We will probably have to re-examine the issue when gdb |
| 204 | starts taking its fundamental type information directly from the |
| 205 | debugging information supplied by the compiler. fnf@cygnus.com */ |
| 206 | |
| 207 | struct type * |
| 208 | c_create_fundamental_type (struct objfile *objfile, int typeid) |
| 209 | { |
| 210 | struct type *type = NULL; |
| 211 | |
| 212 | switch (typeid) |
| 213 | { |
| 214 | default: |
| 215 | /* FIXME: For now, if we are asked to produce a type not in this |
| 216 | language, create the equivalent of a C integer type with the |
| 217 | name "<?type?>". When all the dust settles from the type |
| 218 | reconstruction work, this should probably become an error. */ |
| 219 | type = init_type (TYPE_CODE_INT, |
| 220 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 221 | 0, "<?type?>", objfile); |
| 222 | warning (_("internal error: no C/C++ fundamental type %d"), typeid); |
| 223 | break; |
| 224 | case FT_VOID: |
| 225 | type = init_type (TYPE_CODE_VOID, |
| 226 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 227 | 0, "void", objfile); |
| 228 | break; |
| 229 | case FT_BOOLEAN: |
| 230 | type = init_type (TYPE_CODE_BOOL, |
| 231 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 232 | 0, "bool", objfile); |
| 233 | break; |
| 234 | case FT_CHAR: |
| 235 | type = init_type (TYPE_CODE_INT, |
| 236 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 237 | TYPE_FLAG_NOSIGN, "char", objfile); |
| 238 | break; |
| 239 | case FT_SIGNED_CHAR: |
| 240 | type = init_type (TYPE_CODE_INT, |
| 241 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 242 | 0, "signed char", objfile); |
| 243 | break; |
| 244 | case FT_UNSIGNED_CHAR: |
| 245 | type = init_type (TYPE_CODE_INT, |
| 246 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 247 | TYPE_FLAG_UNSIGNED, "unsigned char", objfile); |
| 248 | break; |
| 249 | case FT_SHORT: |
| 250 | type = init_type (TYPE_CODE_INT, |
| 251 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 252 | 0, "short", objfile); |
| 253 | break; |
| 254 | case FT_SIGNED_SHORT: |
| 255 | type = init_type (TYPE_CODE_INT, |
| 256 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 257 | 0, "short", objfile); /* FIXME-fnf */ |
| 258 | break; |
| 259 | case FT_UNSIGNED_SHORT: |
| 260 | type = init_type (TYPE_CODE_INT, |
| 261 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 262 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); |
| 263 | break; |
| 264 | case FT_INTEGER: |
| 265 | type = init_type (TYPE_CODE_INT, |
| 266 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 267 | 0, "int", objfile); |
| 268 | break; |
| 269 | case FT_SIGNED_INTEGER: |
| 270 | type = init_type (TYPE_CODE_INT, |
| 271 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 272 | 0, "int", objfile); /* FIXME -fnf */ |
| 273 | break; |
| 274 | case FT_UNSIGNED_INTEGER: |
| 275 | type = init_type (TYPE_CODE_INT, |
| 276 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 277 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); |
| 278 | break; |
| 279 | case FT_LONG: |
| 280 | type = init_type (TYPE_CODE_INT, |
| 281 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 282 | 0, "long", objfile); |
| 283 | break; |
| 284 | case FT_SIGNED_LONG: |
| 285 | type = init_type (TYPE_CODE_INT, |
| 286 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 287 | 0, "long", objfile); /* FIXME -fnf */ |
| 288 | break; |
| 289 | case FT_UNSIGNED_LONG: |
| 290 | type = init_type (TYPE_CODE_INT, |
| 291 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 292 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); |
| 293 | break; |
| 294 | case FT_LONG_LONG: |
| 295 | type = init_type (TYPE_CODE_INT, |
| 296 | gdbarch_long_long_bit (current_gdbarch) |
| 297 | / TARGET_CHAR_BIT, |
| 298 | 0, "long long", objfile); |
| 299 | break; |
| 300 | case FT_SIGNED_LONG_LONG: |
| 301 | type = init_type (TYPE_CODE_INT, |
| 302 | gdbarch_long_long_bit (current_gdbarch) |
| 303 | / TARGET_CHAR_BIT, |
| 304 | 0, "signed long long", objfile); |
| 305 | break; |
| 306 | case FT_UNSIGNED_LONG_LONG: |
| 307 | type = init_type (TYPE_CODE_INT, |
| 308 | gdbarch_long_long_bit (current_gdbarch) |
| 309 | / TARGET_CHAR_BIT, |
| 310 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); |
| 311 | break; |
| 312 | case FT_FLOAT: |
| 313 | type = init_type (TYPE_CODE_FLT, |
| 314 | gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 315 | 0, "float", objfile); |
| 316 | break; |
| 317 | case FT_DBL_PREC_FLOAT: |
| 318 | type = init_type (TYPE_CODE_FLT, |
| 319 | gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 320 | 0, "double", objfile); |
| 321 | break; |
| 322 | case FT_EXT_PREC_FLOAT: |
| 323 | type = init_type (TYPE_CODE_FLT, |
| 324 | gdbarch_long_double_bit (current_gdbarch) |
| 325 | / TARGET_CHAR_BIT, |
| 326 | 0, "long double", objfile); |
| 327 | break; |
| 328 | case FT_COMPLEX: |
| 329 | type = init_type (TYPE_CODE_FLT, |
| 330 | 2 * gdbarch_float_bit (current_gdbarch) |
| 331 | / TARGET_CHAR_BIT, |
| 332 | 0, "complex float", objfile); |
| 333 | TYPE_TARGET_TYPE (type) |
| 334 | = init_type (TYPE_CODE_FLT, |
| 335 | gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 336 | 0, "float", objfile); |
| 337 | break; |
| 338 | case FT_DBL_PREC_COMPLEX: |
| 339 | type = init_type (TYPE_CODE_FLT, |
| 340 | 2 * gdbarch_double_bit (current_gdbarch) |
| 341 | / TARGET_CHAR_BIT, |
| 342 | 0, "complex double", objfile); |
| 343 | TYPE_TARGET_TYPE (type) |
| 344 | = init_type (TYPE_CODE_FLT, |
| 345 | gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT, |
| 346 | 0, "double", objfile); |
| 347 | break; |
| 348 | case FT_EXT_PREC_COMPLEX: |
| 349 | type = init_type (TYPE_CODE_FLT, |
| 350 | 2 * gdbarch_long_double_bit (current_gdbarch) |
| 351 | / TARGET_CHAR_BIT, |
| 352 | 0, "complex long double", objfile); |
| 353 | TYPE_TARGET_TYPE (type) |
| 354 | = init_type (TYPE_CODE_FLT, |
| 355 | gdbarch_long_double_bit (current_gdbarch) |
| 356 | / TARGET_CHAR_BIT, |
| 357 | 0, "long double", objfile); |
| 358 | break; |
| 359 | case FT_TEMPLATE_ARG: |
| 360 | type = init_type (TYPE_CODE_TEMPLATE_ARG, |
| 361 | 0, |
| 362 | 0, "<template arg>", objfile); |
| 363 | break; |
| 364 | } |
| 365 | return (type); |
| 366 | } |
| 367 | \f |
| 368 | /* Preprocessing and parsing C and C++ expressions. */ |
| 369 | |
| 370 | |
| 371 | /* When we find that lexptr (the global var defined in parse.c) is |
| 372 | pointing at a macro invocation, we expand the invocation, and call |
| 373 | scan_macro_expansion to save the old lexptr here and point lexptr |
| 374 | into the expanded text. When we reach the end of that, we call |
| 375 | end_macro_expansion to pop back to the value we saved here. The |
| 376 | macro expansion code promises to return only fully-expanded text, |
| 377 | so we don't need to "push" more than one level. |
| 378 | |
| 379 | This is disgusting, of course. It would be cleaner to do all macro |
| 380 | expansion beforehand, and then hand that to lexptr. But we don't |
| 381 | really know where the expression ends. Remember, in a command like |
| 382 | |
| 383 | (gdb) break *ADDRESS if CONDITION |
| 384 | |
| 385 | we evaluate ADDRESS in the scope of the current frame, but we |
| 386 | evaluate CONDITION in the scope of the breakpoint's location. So |
| 387 | it's simply wrong to try to macro-expand the whole thing at once. */ |
| 388 | static char *macro_original_text; |
| 389 | static char *macro_expanded_text; |
| 390 | |
| 391 | |
| 392 | void |
| 393 | scan_macro_expansion (char *expansion) |
| 394 | { |
| 395 | /* We'd better not be trying to push the stack twice. */ |
| 396 | gdb_assert (! macro_original_text); |
| 397 | gdb_assert (! macro_expanded_text); |
| 398 | |
| 399 | /* Save the old lexptr value, so we can return to it when we're done |
| 400 | parsing the expanded text. */ |
| 401 | macro_original_text = lexptr; |
| 402 | lexptr = expansion; |
| 403 | |
| 404 | /* Save the expanded text, so we can free it when we're finished. */ |
| 405 | macro_expanded_text = expansion; |
| 406 | } |
| 407 | |
| 408 | |
| 409 | int |
| 410 | scanning_macro_expansion (void) |
| 411 | { |
| 412 | return macro_original_text != 0; |
| 413 | } |
| 414 | |
| 415 | |
| 416 | void |
| 417 | finished_macro_expansion (void) |
| 418 | { |
| 419 | /* There'd better be something to pop back to, and we better have |
| 420 | saved a pointer to the start of the expanded text. */ |
| 421 | gdb_assert (macro_original_text); |
| 422 | gdb_assert (macro_expanded_text); |
| 423 | |
| 424 | /* Pop back to the original text. */ |
| 425 | lexptr = macro_original_text; |
| 426 | macro_original_text = 0; |
| 427 | |
| 428 | /* Free the expanded text. */ |
| 429 | xfree (macro_expanded_text); |
| 430 | macro_expanded_text = 0; |
| 431 | } |
| 432 | |
| 433 | |
| 434 | static void |
| 435 | scan_macro_cleanup (void *dummy) |
| 436 | { |
| 437 | if (macro_original_text) |
| 438 | finished_macro_expansion (); |
| 439 | } |
| 440 | |
| 441 | |
| 442 | /* We set these global variables before calling c_parse, to tell it |
| 443 | how it to find macro definitions for the expression at hand. */ |
| 444 | macro_lookup_ftype *expression_macro_lookup_func; |
| 445 | void *expression_macro_lookup_baton; |
| 446 | |
| 447 | |
| 448 | static struct macro_definition * |
| 449 | null_macro_lookup (const char *name, void *baton) |
| 450 | { |
| 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | |
| 455 | static int |
| 456 | c_preprocess_and_parse (void) |
| 457 | { |
| 458 | /* Set up a lookup function for the macro expander. */ |
| 459 | struct macro_scope *scope = 0; |
| 460 | struct cleanup *back_to = make_cleanup (free_current_contents, &scope); |
| 461 | |
| 462 | if (expression_context_block) |
| 463 | scope = sal_macro_scope (find_pc_line (expression_context_pc, 0)); |
| 464 | else |
| 465 | scope = default_macro_scope (); |
| 466 | |
| 467 | if (scope) |
| 468 | { |
| 469 | expression_macro_lookup_func = standard_macro_lookup; |
| 470 | expression_macro_lookup_baton = (void *) scope; |
| 471 | } |
| 472 | else |
| 473 | { |
| 474 | expression_macro_lookup_func = null_macro_lookup; |
| 475 | expression_macro_lookup_baton = 0; |
| 476 | } |
| 477 | |
| 478 | gdb_assert (! macro_original_text); |
| 479 | make_cleanup (scan_macro_cleanup, 0); |
| 480 | |
| 481 | { |
| 482 | int result = c_parse (); |
| 483 | do_cleanups (back_to); |
| 484 | return result; |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | |
| 489 | \f |
| 490 | /* Table mapping opcodes into strings for printing operators |
| 491 | and precedences of the operators. */ |
| 492 | |
| 493 | const struct op_print c_op_print_tab[] = |
| 494 | { |
| 495 | {",", BINOP_COMMA, PREC_COMMA, 0}, |
| 496 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, |
| 497 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, |
| 498 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, |
| 499 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, |
| 500 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, |
| 501 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, |
| 502 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, |
| 503 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, |
| 504 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, |
| 505 | {">=", BINOP_GEQ, PREC_ORDER, 0}, |
| 506 | {">", BINOP_GTR, PREC_ORDER, 0}, |
| 507 | {"<", BINOP_LESS, PREC_ORDER, 0}, |
| 508 | {">>", BINOP_RSH, PREC_SHIFT, 0}, |
| 509 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, |
| 510 | {"+", BINOP_ADD, PREC_ADD, 0}, |
| 511 | {"-", BINOP_SUB, PREC_ADD, 0}, |
| 512 | {"*", BINOP_MUL, PREC_MUL, 0}, |
| 513 | {"/", BINOP_DIV, PREC_MUL, 0}, |
| 514 | {"%", BINOP_REM, PREC_MUL, 0}, |
| 515 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, |
| 516 | {"-", UNOP_NEG, PREC_PREFIX, 0}, |
| 517 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, |
| 518 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, |
| 519 | {"*", UNOP_IND, PREC_PREFIX, 0}, |
| 520 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, |
| 521 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, |
| 522 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, |
| 523 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, |
| 524 | {NULL, 0, 0, 0} |
| 525 | }; |
| 526 | \f |
| 527 | enum c_primitive_types { |
| 528 | c_primitive_type_int, |
| 529 | c_primitive_type_long, |
| 530 | c_primitive_type_short, |
| 531 | c_primitive_type_char, |
| 532 | c_primitive_type_float, |
| 533 | c_primitive_type_double, |
| 534 | c_primitive_type_void, |
| 535 | c_primitive_type_long_long, |
| 536 | c_primitive_type_signed_char, |
| 537 | c_primitive_type_unsigned_char, |
| 538 | c_primitive_type_unsigned_short, |
| 539 | c_primitive_type_unsigned_int, |
| 540 | c_primitive_type_unsigned_long, |
| 541 | c_primitive_type_unsigned_long_long, |
| 542 | c_primitive_type_long_double, |
| 543 | c_primitive_type_complex, |
| 544 | c_primitive_type_double_complex, |
| 545 | nr_c_primitive_types |
| 546 | }; |
| 547 | |
| 548 | void |
| 549 | c_language_arch_info (struct gdbarch *gdbarch, |
| 550 | struct language_arch_info *lai) |
| 551 | { |
| 552 | const struct builtin_type *builtin = builtin_type (gdbarch); |
| 553 | lai->string_char_type = builtin->builtin_char; |
| 554 | lai->primitive_type_vector |
| 555 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1, |
| 556 | struct type *); |
| 557 | lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int; |
| 558 | lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long; |
| 559 | lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short; |
| 560 | lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char; |
| 561 | lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float; |
| 562 | lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double; |
| 563 | lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void; |
| 564 | lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long; |
| 565 | lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char; |
| 566 | lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char; |
| 567 | lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short; |
| 568 | lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int; |
| 569 | lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long; |
| 570 | lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long; |
| 571 | lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double; |
| 572 | lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex; |
| 573 | lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex; |
| 574 | } |
| 575 | |
| 576 | const struct language_defn c_language_defn = |
| 577 | { |
| 578 | "c", /* Language name */ |
| 579 | language_c, |
| 580 | NULL, |
| 581 | range_check_off, |
| 582 | type_check_off, |
| 583 | case_sensitive_on, |
| 584 | array_row_major, |
| 585 | &exp_descriptor_standard, |
| 586 | c_preprocess_and_parse, |
| 587 | c_error, |
| 588 | null_post_parser, |
| 589 | c_printchar, /* Print a character constant */ |
| 590 | c_printstr, /* Function to print string constant */ |
| 591 | c_emit_char, /* Print a single char */ |
| 592 | c_create_fundamental_type, /* Create fundamental type in this language */ |
| 593 | c_print_type, /* Print a type using appropriate syntax */ |
| 594 | c_val_print, /* Print a value using appropriate syntax */ |
| 595 | c_value_print, /* Print a top-level value */ |
| 596 | NULL, /* Language specific skip_trampoline */ |
| 597 | NULL, /* value_of_this */ |
| 598 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 599 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 600 | NULL, /* Language specific symbol demangler */ |
| 601 | NULL, /* Language specific class_name_from_physname */ |
| 602 | c_op_print_tab, /* expression operators for printing */ |
| 603 | 1, /* c-style arrays */ |
| 604 | 0, /* String lower bound */ |
| 605 | NULL, |
| 606 | default_word_break_characters, |
| 607 | c_language_arch_info, |
| 608 | default_print_array_index, |
| 609 | LANG_MAGIC |
| 610 | }; |
| 611 | |
| 612 | enum cplus_primitive_types { |
| 613 | cplus_primitive_type_int, |
| 614 | cplus_primitive_type_long, |
| 615 | cplus_primitive_type_short, |
| 616 | cplus_primitive_type_char, |
| 617 | cplus_primitive_type_float, |
| 618 | cplus_primitive_type_double, |
| 619 | cplus_primitive_type_void, |
| 620 | cplus_primitive_type_long_long, |
| 621 | cplus_primitive_type_signed_char, |
| 622 | cplus_primitive_type_unsigned_char, |
| 623 | cplus_primitive_type_unsigned_short, |
| 624 | cplus_primitive_type_unsigned_int, |
| 625 | cplus_primitive_type_unsigned_long, |
| 626 | cplus_primitive_type_unsigned_long_long, |
| 627 | cplus_primitive_type_long_double, |
| 628 | cplus_primitive_type_complex, |
| 629 | cplus_primitive_type_double_complex, |
| 630 | cplus_primitive_type_bool, |
| 631 | nr_cplus_primitive_types |
| 632 | }; |
| 633 | |
| 634 | static void |
| 635 | cplus_language_arch_info (struct gdbarch *gdbarch, |
| 636 | struct language_arch_info *lai) |
| 637 | { |
| 638 | const struct builtin_type *builtin = builtin_type (gdbarch); |
| 639 | lai->string_char_type = builtin->builtin_char; |
| 640 | lai->primitive_type_vector |
| 641 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1, |
| 642 | struct type *); |
| 643 | lai->primitive_type_vector [cplus_primitive_type_int] |
| 644 | = builtin->builtin_int; |
| 645 | lai->primitive_type_vector [cplus_primitive_type_long] |
| 646 | = builtin->builtin_long; |
| 647 | lai->primitive_type_vector [cplus_primitive_type_short] |
| 648 | = builtin->builtin_short; |
| 649 | lai->primitive_type_vector [cplus_primitive_type_char] |
| 650 | = builtin->builtin_char; |
| 651 | lai->primitive_type_vector [cplus_primitive_type_float] |
| 652 | = builtin->builtin_float; |
| 653 | lai->primitive_type_vector [cplus_primitive_type_double] |
| 654 | = builtin->builtin_double; |
| 655 | lai->primitive_type_vector [cplus_primitive_type_void] |
| 656 | = builtin->builtin_void; |
| 657 | lai->primitive_type_vector [cplus_primitive_type_long_long] |
| 658 | = builtin->builtin_long_long; |
| 659 | lai->primitive_type_vector [cplus_primitive_type_signed_char] |
| 660 | = builtin->builtin_signed_char; |
| 661 | lai->primitive_type_vector [cplus_primitive_type_unsigned_char] |
| 662 | = builtin->builtin_unsigned_char; |
| 663 | lai->primitive_type_vector [cplus_primitive_type_unsigned_short] |
| 664 | = builtin->builtin_unsigned_short; |
| 665 | lai->primitive_type_vector [cplus_primitive_type_unsigned_int] |
| 666 | = builtin->builtin_unsigned_int; |
| 667 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long] |
| 668 | = builtin->builtin_unsigned_long; |
| 669 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long] |
| 670 | = builtin->builtin_unsigned_long_long; |
| 671 | lai->primitive_type_vector [cplus_primitive_type_long_double] |
| 672 | = builtin->builtin_long_double; |
| 673 | lai->primitive_type_vector [cplus_primitive_type_complex] |
| 674 | = builtin->builtin_complex; |
| 675 | lai->primitive_type_vector [cplus_primitive_type_double_complex] |
| 676 | = builtin->builtin_double_complex; |
| 677 | lai->primitive_type_vector [cplus_primitive_type_bool] |
| 678 | = builtin->builtin_bool; |
| 679 | } |
| 680 | |
| 681 | const struct language_defn cplus_language_defn = |
| 682 | { |
| 683 | "c++", /* Language name */ |
| 684 | language_cplus, |
| 685 | NULL, |
| 686 | range_check_off, |
| 687 | type_check_off, |
| 688 | case_sensitive_on, |
| 689 | array_row_major, |
| 690 | &exp_descriptor_standard, |
| 691 | c_preprocess_and_parse, |
| 692 | c_error, |
| 693 | null_post_parser, |
| 694 | c_printchar, /* Print a character constant */ |
| 695 | c_printstr, /* Function to print string constant */ |
| 696 | c_emit_char, /* Print a single char */ |
| 697 | c_create_fundamental_type, /* Create fundamental type in this language */ |
| 698 | c_print_type, /* Print a type using appropriate syntax */ |
| 699 | c_val_print, /* Print a value using appropriate syntax */ |
| 700 | c_value_print, /* Print a top-level value */ |
| 701 | cplus_skip_trampoline, /* Language specific skip_trampoline */ |
| 702 | value_of_this, /* value_of_this */ |
| 703 | cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 704 | cp_lookup_transparent_type, /* lookup_transparent_type */ |
| 705 | cplus_demangle, /* Language specific symbol demangler */ |
| 706 | cp_class_name_from_physname, /* Language specific class_name_from_physname */ |
| 707 | c_op_print_tab, /* expression operators for printing */ |
| 708 | 1, /* c-style arrays */ |
| 709 | 0, /* String lower bound */ |
| 710 | NULL, |
| 711 | default_word_break_characters, |
| 712 | cplus_language_arch_info, |
| 713 | default_print_array_index, |
| 714 | LANG_MAGIC |
| 715 | }; |
| 716 | |
| 717 | const struct language_defn asm_language_defn = |
| 718 | { |
| 719 | "asm", /* Language name */ |
| 720 | language_asm, |
| 721 | NULL, |
| 722 | range_check_off, |
| 723 | type_check_off, |
| 724 | case_sensitive_on, |
| 725 | array_row_major, |
| 726 | &exp_descriptor_standard, |
| 727 | c_preprocess_and_parse, |
| 728 | c_error, |
| 729 | null_post_parser, |
| 730 | c_printchar, /* Print a character constant */ |
| 731 | c_printstr, /* Function to print string constant */ |
| 732 | c_emit_char, /* Print a single char */ |
| 733 | c_create_fundamental_type, /* Create fundamental type in this language */ |
| 734 | c_print_type, /* Print a type using appropriate syntax */ |
| 735 | c_val_print, /* Print a value using appropriate syntax */ |
| 736 | c_value_print, /* Print a top-level value */ |
| 737 | NULL, /* Language specific skip_trampoline */ |
| 738 | NULL, /* value_of_this */ |
| 739 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 740 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 741 | NULL, /* Language specific symbol demangler */ |
| 742 | NULL, /* Language specific class_name_from_physname */ |
| 743 | c_op_print_tab, /* expression operators for printing */ |
| 744 | 1, /* c-style arrays */ |
| 745 | 0, /* String lower bound */ |
| 746 | NULL, |
| 747 | default_word_break_characters, |
| 748 | c_language_arch_info, /* FIXME: la_language_arch_info. */ |
| 749 | default_print_array_index, |
| 750 | LANG_MAGIC |
| 751 | }; |
| 752 | |
| 753 | /* The following language_defn does not represent a real language. |
| 754 | It just provides a minimal support a-la-C that should allow users |
| 755 | to do some simple operations when debugging applications that use |
| 756 | a language currently not supported by GDB. */ |
| 757 | |
| 758 | const struct language_defn minimal_language_defn = |
| 759 | { |
| 760 | "minimal", /* Language name */ |
| 761 | language_minimal, |
| 762 | NULL, |
| 763 | range_check_off, |
| 764 | type_check_off, |
| 765 | case_sensitive_on, |
| 766 | array_row_major, |
| 767 | &exp_descriptor_standard, |
| 768 | c_preprocess_and_parse, |
| 769 | c_error, |
| 770 | null_post_parser, |
| 771 | c_printchar, /* Print a character constant */ |
| 772 | c_printstr, /* Function to print string constant */ |
| 773 | c_emit_char, /* Print a single char */ |
| 774 | c_create_fundamental_type, /* Create fundamental type in this language */ |
| 775 | c_print_type, /* Print a type using appropriate syntax */ |
| 776 | c_val_print, /* Print a value using appropriate syntax */ |
| 777 | c_value_print, /* Print a top-level value */ |
| 778 | NULL, /* Language specific skip_trampoline */ |
| 779 | NULL, /* value_of_this */ |
| 780 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 781 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 782 | NULL, /* Language specific symbol demangler */ |
| 783 | NULL, /* Language specific class_name_from_physname */ |
| 784 | c_op_print_tab, /* expression operators for printing */ |
| 785 | 1, /* c-style arrays */ |
| 786 | 0, /* String lower bound */ |
| 787 | NULL, |
| 788 | default_word_break_characters, |
| 789 | c_language_arch_info, |
| 790 | default_print_array_index, |
| 791 | LANG_MAGIC |
| 792 | }; |
| 793 | |
| 794 | void |
| 795 | _initialize_c_language (void) |
| 796 | { |
| 797 | add_language (&c_language_defn); |
| 798 | add_language (&cplus_language_defn); |
| 799 | add_language (&asm_language_defn); |
| 800 | add_language (&minimal_language_defn); |
| 801 | } |