| 1 | /* Fortran language support routines for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1993-2020 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Motorola. Adapted from the C parser by Farooq Butt |
| 6 | (fmbutt@engage.sps.mot.com). |
| 7 | |
| 8 | This file is part of GDB. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "symtab.h" |
| 25 | #include "gdbtypes.h" |
| 26 | #include "expression.h" |
| 27 | #include "parser-defs.h" |
| 28 | #include "language.h" |
| 29 | #include "varobj.h" |
| 30 | #include "gdbcore.h" |
| 31 | #include "f-lang.h" |
| 32 | #include "valprint.h" |
| 33 | #include "value.h" |
| 34 | #include "cp-support.h" |
| 35 | #include "charset.h" |
| 36 | #include "c-lang.h" |
| 37 | #include "target-float.h" |
| 38 | #include "gdbarch.h" |
| 39 | |
| 40 | #include <math.h> |
| 41 | |
| 42 | /* Local functions */ |
| 43 | |
| 44 | static void f_printchar (int c, struct type *type, struct ui_file * stream); |
| 45 | static void f_emit_char (int c, struct type *type, |
| 46 | struct ui_file * stream, int quoter); |
| 47 | |
| 48 | /* Return the encoding that should be used for the character type |
| 49 | TYPE. */ |
| 50 | |
| 51 | static const char * |
| 52 | f_get_encoding (struct type *type) |
| 53 | { |
| 54 | const char *encoding; |
| 55 | |
| 56 | switch (TYPE_LENGTH (type)) |
| 57 | { |
| 58 | case 1: |
| 59 | encoding = target_charset (get_type_arch (type)); |
| 60 | break; |
| 61 | case 4: |
| 62 | if (type_byte_order (type) == BFD_ENDIAN_BIG) |
| 63 | encoding = "UTF-32BE"; |
| 64 | else |
| 65 | encoding = "UTF-32LE"; |
| 66 | break; |
| 67 | |
| 68 | default: |
| 69 | error (_("unrecognized character type")); |
| 70 | } |
| 71 | |
| 72 | return encoding; |
| 73 | } |
| 74 | |
| 75 | /* Print the character C on STREAM as part of the contents of a literal |
| 76 | string whose delimiter is QUOTER. Note that that format for printing |
| 77 | characters and strings is language specific. |
| 78 | FIXME: This is a copy of the same function from c-exp.y. It should |
| 79 | be replaced with a true F77 version. */ |
| 80 | |
| 81 | static void |
| 82 | f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
| 83 | { |
| 84 | const char *encoding = f_get_encoding (type); |
| 85 | |
| 86 | generic_emit_char (c, type, stream, quoter, encoding); |
| 87 | } |
| 88 | |
| 89 | /* Implementation of la_printchar. */ |
| 90 | |
| 91 | static void |
| 92 | f_printchar (int c, struct type *type, struct ui_file *stream) |
| 93 | { |
| 94 | fputs_filtered ("'", stream); |
| 95 | LA_EMIT_CHAR (c, type, stream, '\''); |
| 96 | fputs_filtered ("'", stream); |
| 97 | } |
| 98 | |
| 99 | /* Print the character string STRING, printing at most LENGTH characters. |
| 100 | Printing stops early if the number hits print_max; repeat counts |
| 101 | are printed as appropriate. Print ellipses at the end if we |
| 102 | had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. |
| 103 | FIXME: This is a copy of the same function from c-exp.y. It should |
| 104 | be replaced with a true F77 version. */ |
| 105 | |
| 106 | static void |
| 107 | f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string, |
| 108 | unsigned int length, const char *encoding, int force_ellipses, |
| 109 | const struct value_print_options *options) |
| 110 | { |
| 111 | const char *type_encoding = f_get_encoding (type); |
| 112 | |
| 113 | if (TYPE_LENGTH (type) == 4) |
| 114 | fputs_filtered ("4_", stream); |
| 115 | |
| 116 | if (!encoding || !*encoding) |
| 117 | encoding = type_encoding; |
| 118 | |
| 119 | generic_printstr (stream, type, string, length, encoding, |
| 120 | force_ellipses, '\'', 0, options); |
| 121 | } |
| 122 | \f |
| 123 | |
| 124 | /* Table of operators and their precedences for printing expressions. */ |
| 125 | |
| 126 | static const struct op_print f_op_print_tab[] = |
| 127 | { |
| 128 | {"+", BINOP_ADD, PREC_ADD, 0}, |
| 129 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, |
| 130 | {"-", BINOP_SUB, PREC_ADD, 0}, |
| 131 | {"-", UNOP_NEG, PREC_PREFIX, 0}, |
| 132 | {"*", BINOP_MUL, PREC_MUL, 0}, |
| 133 | {"/", BINOP_DIV, PREC_MUL, 0}, |
| 134 | {"DIV", BINOP_INTDIV, PREC_MUL, 0}, |
| 135 | {"MOD", BINOP_REM, PREC_MUL, 0}, |
| 136 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, |
| 137 | {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, |
| 138 | {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, |
| 139 | {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, |
| 140 | {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0}, |
| 141 | {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0}, |
| 142 | {".LE.", BINOP_LEQ, PREC_ORDER, 0}, |
| 143 | {".GE.", BINOP_GEQ, PREC_ORDER, 0}, |
| 144 | {".GT.", BINOP_GTR, PREC_ORDER, 0}, |
| 145 | {".LT.", BINOP_LESS, PREC_ORDER, 0}, |
| 146 | {"**", UNOP_IND, PREC_PREFIX, 0}, |
| 147 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, |
| 148 | {NULL, OP_NULL, PREC_REPEAT, 0} |
| 149 | }; |
| 150 | \f |
| 151 | enum f_primitive_types { |
| 152 | f_primitive_type_character, |
| 153 | f_primitive_type_logical, |
| 154 | f_primitive_type_logical_s1, |
| 155 | f_primitive_type_logical_s2, |
| 156 | f_primitive_type_logical_s8, |
| 157 | f_primitive_type_integer, |
| 158 | f_primitive_type_integer_s2, |
| 159 | f_primitive_type_real, |
| 160 | f_primitive_type_real_s8, |
| 161 | f_primitive_type_real_s16, |
| 162 | f_primitive_type_complex_s8, |
| 163 | f_primitive_type_complex_s16, |
| 164 | f_primitive_type_void, |
| 165 | nr_f_primitive_types |
| 166 | }; |
| 167 | |
| 168 | static void |
| 169 | f_language_arch_info (struct gdbarch *gdbarch, |
| 170 | struct language_arch_info *lai) |
| 171 | { |
| 172 | const struct builtin_f_type *builtin = builtin_f_type (gdbarch); |
| 173 | |
| 174 | lai->string_char_type = builtin->builtin_character; |
| 175 | lai->primitive_type_vector |
| 176 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1, |
| 177 | struct type *); |
| 178 | |
| 179 | lai->primitive_type_vector [f_primitive_type_character] |
| 180 | = builtin->builtin_character; |
| 181 | lai->primitive_type_vector [f_primitive_type_logical] |
| 182 | = builtin->builtin_logical; |
| 183 | lai->primitive_type_vector [f_primitive_type_logical_s1] |
| 184 | = builtin->builtin_logical_s1; |
| 185 | lai->primitive_type_vector [f_primitive_type_logical_s2] |
| 186 | = builtin->builtin_logical_s2; |
| 187 | lai->primitive_type_vector [f_primitive_type_logical_s8] |
| 188 | = builtin->builtin_logical_s8; |
| 189 | lai->primitive_type_vector [f_primitive_type_real] |
| 190 | = builtin->builtin_real; |
| 191 | lai->primitive_type_vector [f_primitive_type_real_s8] |
| 192 | = builtin->builtin_real_s8; |
| 193 | lai->primitive_type_vector [f_primitive_type_real_s16] |
| 194 | = builtin->builtin_real_s16; |
| 195 | lai->primitive_type_vector [f_primitive_type_complex_s8] |
| 196 | = builtin->builtin_complex_s8; |
| 197 | lai->primitive_type_vector [f_primitive_type_complex_s16] |
| 198 | = builtin->builtin_complex_s16; |
| 199 | lai->primitive_type_vector [f_primitive_type_void] |
| 200 | = builtin->builtin_void; |
| 201 | |
| 202 | lai->bool_type_symbol = "logical"; |
| 203 | lai->bool_type_default = builtin->builtin_logical_s2; |
| 204 | } |
| 205 | |
| 206 | /* Remove the modules separator :: from the default break list. */ |
| 207 | |
| 208 | static const char * |
| 209 | f_word_break_characters (void) |
| 210 | { |
| 211 | static char *retval; |
| 212 | |
| 213 | if (!retval) |
| 214 | { |
| 215 | char *s; |
| 216 | |
| 217 | retval = xstrdup (default_word_break_characters ()); |
| 218 | s = strchr (retval, ':'); |
| 219 | if (s) |
| 220 | { |
| 221 | char *last_char = &s[strlen (s) - 1]; |
| 222 | |
| 223 | *s = *last_char; |
| 224 | *last_char = 0; |
| 225 | } |
| 226 | } |
| 227 | return retval; |
| 228 | } |
| 229 | |
| 230 | /* Consider the modules separator :: as a valid symbol name character |
| 231 | class. */ |
| 232 | |
| 233 | static void |
| 234 | f_collect_symbol_completion_matches (completion_tracker &tracker, |
| 235 | complete_symbol_mode mode, |
| 236 | symbol_name_match_type compare_name, |
| 237 | const char *text, const char *word, |
| 238 | enum type_code code) |
| 239 | { |
| 240 | default_collect_symbol_completion_matches_break_on (tracker, mode, |
| 241 | compare_name, |
| 242 | text, word, ":", code); |
| 243 | } |
| 244 | |
| 245 | /* Special expression evaluation cases for Fortran. */ |
| 246 | |
| 247 | static struct value * |
| 248 | evaluate_subexp_f (struct type *expect_type, struct expression *exp, |
| 249 | int *pos, enum noside noside) |
| 250 | { |
| 251 | struct value *arg1 = NULL, *arg2 = NULL; |
| 252 | enum exp_opcode op; |
| 253 | int pc; |
| 254 | struct type *type; |
| 255 | |
| 256 | pc = *pos; |
| 257 | *pos += 1; |
| 258 | op = exp->elts[pc].opcode; |
| 259 | |
| 260 | switch (op) |
| 261 | { |
| 262 | default: |
| 263 | *pos -= 1; |
| 264 | return evaluate_subexp_standard (expect_type, exp, pos, noside); |
| 265 | |
| 266 | case UNOP_ABS: |
| 267 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
| 268 | if (noside == EVAL_SKIP) |
| 269 | return eval_skip_value (exp); |
| 270 | type = value_type (arg1); |
| 271 | switch (type->code ()) |
| 272 | { |
| 273 | case TYPE_CODE_FLT: |
| 274 | { |
| 275 | double d |
| 276 | = fabs (target_float_to_host_double (value_contents (arg1), |
| 277 | value_type (arg1))); |
| 278 | return value_from_host_double (type, d); |
| 279 | } |
| 280 | case TYPE_CODE_INT: |
| 281 | { |
| 282 | LONGEST l = value_as_long (arg1); |
| 283 | l = llabs (l); |
| 284 | return value_from_longest (type, l); |
| 285 | } |
| 286 | } |
| 287 | error (_("ABS of type %s not supported"), TYPE_SAFE_NAME (type)); |
| 288 | |
| 289 | case BINOP_MOD: |
| 290 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
| 291 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
| 292 | if (noside == EVAL_SKIP) |
| 293 | return eval_skip_value (exp); |
| 294 | type = value_type (arg1); |
| 295 | if (type->code () != value_type (arg2)->code ()) |
| 296 | error (_("non-matching types for parameters to MOD ()")); |
| 297 | switch (type->code ()) |
| 298 | { |
| 299 | case TYPE_CODE_FLT: |
| 300 | { |
| 301 | double d1 |
| 302 | = target_float_to_host_double (value_contents (arg1), |
| 303 | value_type (arg1)); |
| 304 | double d2 |
| 305 | = target_float_to_host_double (value_contents (arg2), |
| 306 | value_type (arg2)); |
| 307 | double d3 = fmod (d1, d2); |
| 308 | return value_from_host_double (type, d3); |
| 309 | } |
| 310 | case TYPE_CODE_INT: |
| 311 | { |
| 312 | LONGEST v1 = value_as_long (arg1); |
| 313 | LONGEST v2 = value_as_long (arg2); |
| 314 | if (v2 == 0) |
| 315 | error (_("calling MOD (N, 0) is undefined")); |
| 316 | LONGEST v3 = v1 - (v1 / v2) * v2; |
| 317 | return value_from_longest (value_type (arg1), v3); |
| 318 | } |
| 319 | } |
| 320 | error (_("MOD of type %s not supported"), TYPE_SAFE_NAME (type)); |
| 321 | |
| 322 | case UNOP_FORTRAN_CEILING: |
| 323 | { |
| 324 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
| 325 | if (noside == EVAL_SKIP) |
| 326 | return eval_skip_value (exp); |
| 327 | type = value_type (arg1); |
| 328 | if (type->code () != TYPE_CODE_FLT) |
| 329 | error (_("argument to CEILING must be of type float")); |
| 330 | double val |
| 331 | = target_float_to_host_double (value_contents (arg1), |
| 332 | value_type (arg1)); |
| 333 | val = ceil (val); |
| 334 | return value_from_host_double (type, val); |
| 335 | } |
| 336 | |
| 337 | case UNOP_FORTRAN_FLOOR: |
| 338 | { |
| 339 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
| 340 | if (noside == EVAL_SKIP) |
| 341 | return eval_skip_value (exp); |
| 342 | type = value_type (arg1); |
| 343 | if (type->code () != TYPE_CODE_FLT) |
| 344 | error (_("argument to FLOOR must be of type float")); |
| 345 | double val |
| 346 | = target_float_to_host_double (value_contents (arg1), |
| 347 | value_type (arg1)); |
| 348 | val = floor (val); |
| 349 | return value_from_host_double (type, val); |
| 350 | } |
| 351 | |
| 352 | case BINOP_FORTRAN_MODULO: |
| 353 | { |
| 354 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
| 355 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
| 356 | if (noside == EVAL_SKIP) |
| 357 | return eval_skip_value (exp); |
| 358 | type = value_type (arg1); |
| 359 | if (type->code () != value_type (arg2)->code ()) |
| 360 | error (_("non-matching types for parameters to MODULO ()")); |
| 361 | /* MODULO(A, P) = A - FLOOR (A / P) * P */ |
| 362 | switch (type->code ()) |
| 363 | { |
| 364 | case TYPE_CODE_INT: |
| 365 | { |
| 366 | LONGEST a = value_as_long (arg1); |
| 367 | LONGEST p = value_as_long (arg2); |
| 368 | LONGEST result = a - (a / p) * p; |
| 369 | if (result != 0 && (a < 0) != (p < 0)) |
| 370 | result += p; |
| 371 | return value_from_longest (value_type (arg1), result); |
| 372 | } |
| 373 | case TYPE_CODE_FLT: |
| 374 | { |
| 375 | double a |
| 376 | = target_float_to_host_double (value_contents (arg1), |
| 377 | value_type (arg1)); |
| 378 | double p |
| 379 | = target_float_to_host_double (value_contents (arg2), |
| 380 | value_type (arg2)); |
| 381 | double result = fmod (a, p); |
| 382 | if (result != 0 && (a < 0.0) != (p < 0.0)) |
| 383 | result += p; |
| 384 | return value_from_host_double (type, result); |
| 385 | } |
| 386 | } |
| 387 | error (_("MODULO of type %s not supported"), TYPE_SAFE_NAME (type)); |
| 388 | } |
| 389 | |
| 390 | case BINOP_FORTRAN_CMPLX: |
| 391 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
| 392 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
| 393 | if (noside == EVAL_SKIP) |
| 394 | return eval_skip_value (exp); |
| 395 | type = builtin_f_type(exp->gdbarch)->builtin_complex_s16; |
| 396 | return value_literal_complex (arg1, arg2, type); |
| 397 | |
| 398 | case UNOP_FORTRAN_KIND: |
| 399 | arg1 = evaluate_subexp (NULL, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
| 400 | type = value_type (arg1); |
| 401 | |
| 402 | switch (type->code ()) |
| 403 | { |
| 404 | case TYPE_CODE_STRUCT: |
| 405 | case TYPE_CODE_UNION: |
| 406 | case TYPE_CODE_MODULE: |
| 407 | case TYPE_CODE_FUNC: |
| 408 | error (_("argument to kind must be an intrinsic type")); |
| 409 | } |
| 410 | |
| 411 | if (!TYPE_TARGET_TYPE (type)) |
| 412 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, |
| 413 | TYPE_LENGTH (type)); |
| 414 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, |
| 415 | TYPE_LENGTH (TYPE_TARGET_TYPE (type))); |
| 416 | } |
| 417 | |
| 418 | /* Should be unreachable. */ |
| 419 | return nullptr; |
| 420 | } |
| 421 | |
| 422 | /* Return true if TYPE is a string. */ |
| 423 | |
| 424 | static bool |
| 425 | f_is_string_type_p (struct type *type) |
| 426 | { |
| 427 | type = check_typedef (type); |
| 428 | return (type->code () == TYPE_CODE_STRING |
| 429 | || (type->code () == TYPE_CODE_ARRAY |
| 430 | && TYPE_TARGET_TYPE (type)->code () == TYPE_CODE_CHAR)); |
| 431 | } |
| 432 | |
| 433 | /* Special expression lengths for Fortran. */ |
| 434 | |
| 435 | static void |
| 436 | operator_length_f (const struct expression *exp, int pc, int *oplenp, |
| 437 | int *argsp) |
| 438 | { |
| 439 | int oplen = 1; |
| 440 | int args = 0; |
| 441 | |
| 442 | switch (exp->elts[pc - 1].opcode) |
| 443 | { |
| 444 | default: |
| 445 | operator_length_standard (exp, pc, oplenp, argsp); |
| 446 | return; |
| 447 | |
| 448 | case UNOP_FORTRAN_KIND: |
| 449 | case UNOP_FORTRAN_FLOOR: |
| 450 | case UNOP_FORTRAN_CEILING: |
| 451 | oplen = 1; |
| 452 | args = 1; |
| 453 | break; |
| 454 | |
| 455 | case BINOP_FORTRAN_CMPLX: |
| 456 | case BINOP_FORTRAN_MODULO: |
| 457 | oplen = 1; |
| 458 | args = 2; |
| 459 | break; |
| 460 | } |
| 461 | |
| 462 | *oplenp = oplen; |
| 463 | *argsp = args; |
| 464 | } |
| 465 | |
| 466 | /* Helper for PRINT_SUBEXP_F. Arguments are as for PRINT_SUBEXP_F, except |
| 467 | the extra argument NAME which is the text that should be printed as the |
| 468 | name of this operation. */ |
| 469 | |
| 470 | static void |
| 471 | print_unop_subexp_f (struct expression *exp, int *pos, |
| 472 | struct ui_file *stream, enum precedence prec, |
| 473 | const char *name) |
| 474 | { |
| 475 | (*pos)++; |
| 476 | fprintf_filtered (stream, "%s(", name); |
| 477 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
| 478 | fputs_filtered (")", stream); |
| 479 | } |
| 480 | |
| 481 | /* Helper for PRINT_SUBEXP_F. Arguments are as for PRINT_SUBEXP_F, except |
| 482 | the extra argument NAME which is the text that should be printed as the |
| 483 | name of this operation. */ |
| 484 | |
| 485 | static void |
| 486 | print_binop_subexp_f (struct expression *exp, int *pos, |
| 487 | struct ui_file *stream, enum precedence prec, |
| 488 | const char *name) |
| 489 | { |
| 490 | (*pos)++; |
| 491 | fprintf_filtered (stream, "%s(", name); |
| 492 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
| 493 | fputs_filtered (",", stream); |
| 494 | print_subexp (exp, pos, stream, PREC_SUFFIX); |
| 495 | fputs_filtered (")", stream); |
| 496 | } |
| 497 | |
| 498 | /* Special expression printing for Fortran. */ |
| 499 | |
| 500 | static void |
| 501 | print_subexp_f (struct expression *exp, int *pos, |
| 502 | struct ui_file *stream, enum precedence prec) |
| 503 | { |
| 504 | int pc = *pos; |
| 505 | enum exp_opcode op = exp->elts[pc].opcode; |
| 506 | |
| 507 | switch (op) |
| 508 | { |
| 509 | default: |
| 510 | print_subexp_standard (exp, pos, stream, prec); |
| 511 | return; |
| 512 | |
| 513 | case UNOP_FORTRAN_KIND: |
| 514 | print_unop_subexp_f (exp, pos, stream, prec, "KIND"); |
| 515 | return; |
| 516 | |
| 517 | case UNOP_FORTRAN_FLOOR: |
| 518 | print_unop_subexp_f (exp, pos, stream, prec, "FLOOR"); |
| 519 | return; |
| 520 | |
| 521 | case UNOP_FORTRAN_CEILING: |
| 522 | print_unop_subexp_f (exp, pos, stream, prec, "CEILING"); |
| 523 | return; |
| 524 | |
| 525 | case BINOP_FORTRAN_CMPLX: |
| 526 | print_binop_subexp_f (exp, pos, stream, prec, "CMPLX"); |
| 527 | return; |
| 528 | |
| 529 | case BINOP_FORTRAN_MODULO: |
| 530 | print_binop_subexp_f (exp, pos, stream, prec, "MODULO"); |
| 531 | return; |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | /* Special expression names for Fortran. */ |
| 536 | |
| 537 | static const char * |
| 538 | op_name_f (enum exp_opcode opcode) |
| 539 | { |
| 540 | switch (opcode) |
| 541 | { |
| 542 | default: |
| 543 | return op_name_standard (opcode); |
| 544 | |
| 545 | #define OP(name) \ |
| 546 | case name: \ |
| 547 | return #name ; |
| 548 | #include "fortran-operator.def" |
| 549 | #undef OP |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | /* Special expression dumping for Fortran. */ |
| 554 | |
| 555 | static int |
| 556 | dump_subexp_body_f (struct expression *exp, |
| 557 | struct ui_file *stream, int elt) |
| 558 | { |
| 559 | int opcode = exp->elts[elt].opcode; |
| 560 | int oplen, nargs, i; |
| 561 | |
| 562 | switch (opcode) |
| 563 | { |
| 564 | default: |
| 565 | return dump_subexp_body_standard (exp, stream, elt); |
| 566 | |
| 567 | case UNOP_FORTRAN_KIND: |
| 568 | case UNOP_FORTRAN_FLOOR: |
| 569 | case UNOP_FORTRAN_CEILING: |
| 570 | case BINOP_FORTRAN_CMPLX: |
| 571 | case BINOP_FORTRAN_MODULO: |
| 572 | operator_length_f (exp, (elt + 1), &oplen, &nargs); |
| 573 | break; |
| 574 | } |
| 575 | |
| 576 | elt += oplen; |
| 577 | for (i = 0; i < nargs; i += 1) |
| 578 | elt = dump_subexp (exp, stream, elt); |
| 579 | |
| 580 | return elt; |
| 581 | } |
| 582 | |
| 583 | /* Special expression checking for Fortran. */ |
| 584 | |
| 585 | static int |
| 586 | operator_check_f (struct expression *exp, int pos, |
| 587 | int (*objfile_func) (struct objfile *objfile, |
| 588 | void *data), |
| 589 | void *data) |
| 590 | { |
| 591 | const union exp_element *const elts = exp->elts; |
| 592 | |
| 593 | switch (elts[pos].opcode) |
| 594 | { |
| 595 | case UNOP_FORTRAN_KIND: |
| 596 | case UNOP_FORTRAN_FLOOR: |
| 597 | case UNOP_FORTRAN_CEILING: |
| 598 | case BINOP_FORTRAN_CMPLX: |
| 599 | case BINOP_FORTRAN_MODULO: |
| 600 | /* Any references to objfiles are held in the arguments to this |
| 601 | expression, not within the expression itself, so no additional |
| 602 | checking is required here, the outer expression iteration code |
| 603 | will take care of checking each argument. */ |
| 604 | break; |
| 605 | |
| 606 | default: |
| 607 | return operator_check_standard (exp, pos, objfile_func, data); |
| 608 | } |
| 609 | |
| 610 | return 0; |
| 611 | } |
| 612 | |
| 613 | static const char *f_extensions[] = |
| 614 | { |
| 615 | ".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP", |
| 616 | ".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08", |
| 617 | NULL |
| 618 | }; |
| 619 | |
| 620 | /* Expression processing for Fortran. */ |
| 621 | static const struct exp_descriptor exp_descriptor_f = |
| 622 | { |
| 623 | print_subexp_f, |
| 624 | operator_length_f, |
| 625 | operator_check_f, |
| 626 | op_name_f, |
| 627 | dump_subexp_body_f, |
| 628 | evaluate_subexp_f |
| 629 | }; |
| 630 | |
| 631 | /* Constant data that describes the Fortran language. */ |
| 632 | |
| 633 | extern const struct language_data f_language_data = |
| 634 | { |
| 635 | "fortran", |
| 636 | "Fortran", |
| 637 | language_fortran, |
| 638 | range_check_on, |
| 639 | case_sensitive_off, |
| 640 | array_column_major, |
| 641 | macro_expansion_no, |
| 642 | f_extensions, |
| 643 | &exp_descriptor_f, |
| 644 | f_parse, /* parser */ |
| 645 | null_post_parser, |
| 646 | f_printchar, /* Print character constant */ |
| 647 | f_printstr, /* function to print string constant */ |
| 648 | f_emit_char, /* Function to print a single character */ |
| 649 | f_print_type, /* Print a type using appropriate syntax */ |
| 650 | f_print_typedef, /* Print a typedef using appropriate syntax */ |
| 651 | f_value_print_innner, /* la_value_print_inner */ |
| 652 | c_value_print, /* FIXME */ |
| 653 | NULL, /* Language specific skip_trampoline */ |
| 654 | NULL, /* name_of_this */ |
| 655 | false, /* la_store_sym_names_in_linkage_form_p */ |
| 656 | cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 657 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 658 | |
| 659 | /* We could support demangling here to provide module namespaces |
| 660 | also for inferiors with only minimal symbol table (ELF symbols). |
| 661 | Just the mangling standard is not standardized across compilers |
| 662 | and there is no DW_AT_producer available for inferiors with only |
| 663 | the ELF symbols to check the mangling kind. */ |
| 664 | NULL, /* Language specific symbol demangler */ |
| 665 | NULL, |
| 666 | NULL, /* Language specific |
| 667 | class_name_from_physname */ |
| 668 | f_op_print_tab, /* expression operators for printing */ |
| 669 | 0, /* arrays are first-class (not c-style) */ |
| 670 | 1, /* String lower bound */ |
| 671 | f_word_break_characters, |
| 672 | f_collect_symbol_completion_matches, |
| 673 | f_language_arch_info, |
| 674 | default_pass_by_reference, |
| 675 | c_watch_location_expression, |
| 676 | cp_get_symbol_name_matcher, /* la_get_symbol_name_matcher */ |
| 677 | iterate_over_symbols, |
| 678 | cp_search_name_hash, |
| 679 | &default_varobj_ops, |
| 680 | NULL, |
| 681 | NULL, |
| 682 | f_is_string_type_p, |
| 683 | "(...)" /* la_struct_too_deep_ellipsis */ |
| 684 | }; |
| 685 | |
| 686 | /* Class representing the Fortran language. */ |
| 687 | |
| 688 | class f_language : public language_defn |
| 689 | { |
| 690 | public: |
| 691 | f_language () |
| 692 | : language_defn (language_fortran, f_language_data) |
| 693 | { /* Nothing. */ } |
| 694 | }; |
| 695 | |
| 696 | /* Single instance of the Fortran language class. */ |
| 697 | |
| 698 | static f_language f_language_defn; |
| 699 | |
| 700 | static void * |
| 701 | build_fortran_types (struct gdbarch *gdbarch) |
| 702 | { |
| 703 | struct builtin_f_type *builtin_f_type |
| 704 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type); |
| 705 | |
| 706 | builtin_f_type->builtin_void |
| 707 | = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
| 708 | |
| 709 | builtin_f_type->builtin_character |
| 710 | = arch_type (gdbarch, TYPE_CODE_CHAR, TARGET_CHAR_BIT, "character"); |
| 711 | |
| 712 | builtin_f_type->builtin_logical_s1 |
| 713 | = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1"); |
| 714 | |
| 715 | builtin_f_type->builtin_integer_s2 |
| 716 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0, |
| 717 | "integer*2"); |
| 718 | |
| 719 | builtin_f_type->builtin_integer_s8 |
| 720 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), 0, |
| 721 | "integer*8"); |
| 722 | |
| 723 | builtin_f_type->builtin_logical_s2 |
| 724 | = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1, |
| 725 | "logical*2"); |
| 726 | |
| 727 | builtin_f_type->builtin_logical_s8 |
| 728 | = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1, |
| 729 | "logical*8"); |
| 730 | |
| 731 | builtin_f_type->builtin_integer |
| 732 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0, |
| 733 | "integer"); |
| 734 | |
| 735 | builtin_f_type->builtin_logical |
| 736 | = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1, |
| 737 | "logical*4"); |
| 738 | |
| 739 | builtin_f_type->builtin_real |
| 740 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), |
| 741 | "real", gdbarch_float_format (gdbarch)); |
| 742 | builtin_f_type->builtin_real_s8 |
| 743 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), |
| 744 | "real*8", gdbarch_double_format (gdbarch)); |
| 745 | auto fmt = gdbarch_floatformat_for_type (gdbarch, "real(kind=16)", 128); |
| 746 | if (fmt != nullptr) |
| 747 | builtin_f_type->builtin_real_s16 |
| 748 | = arch_float_type (gdbarch, 128, "real*16", fmt); |
| 749 | else if (gdbarch_long_double_bit (gdbarch) == 128) |
| 750 | builtin_f_type->builtin_real_s16 |
| 751 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
| 752 | "real*16", gdbarch_long_double_format (gdbarch)); |
| 753 | else |
| 754 | builtin_f_type->builtin_real_s16 |
| 755 | = arch_type (gdbarch, TYPE_CODE_ERROR, 128, "real*16"); |
| 756 | |
| 757 | builtin_f_type->builtin_complex_s8 |
| 758 | = init_complex_type ("complex*8", builtin_f_type->builtin_real); |
| 759 | builtin_f_type->builtin_complex_s16 |
| 760 | = init_complex_type ("complex*16", builtin_f_type->builtin_real_s8); |
| 761 | |
| 762 | if (builtin_f_type->builtin_real_s16->code () == TYPE_CODE_ERROR) |
| 763 | builtin_f_type->builtin_complex_s32 |
| 764 | = arch_type (gdbarch, TYPE_CODE_ERROR, 256, "complex*32"); |
| 765 | else |
| 766 | builtin_f_type->builtin_complex_s32 |
| 767 | = init_complex_type ("complex*32", builtin_f_type->builtin_real_s16); |
| 768 | |
| 769 | return builtin_f_type; |
| 770 | } |
| 771 | |
| 772 | static struct gdbarch_data *f_type_data; |
| 773 | |
| 774 | const struct builtin_f_type * |
| 775 | builtin_f_type (struct gdbarch *gdbarch) |
| 776 | { |
| 777 | return (const struct builtin_f_type *) gdbarch_data (gdbarch, f_type_data); |
| 778 | } |
| 779 | |
| 780 | void _initialize_f_language (); |
| 781 | void |
| 782 | _initialize_f_language () |
| 783 | { |
| 784 | f_type_data = gdbarch_data_register_post_init (build_fortran_types); |
| 785 | } |
| 786 | |
| 787 | /* See f-lang.h. */ |
| 788 | |
| 789 | struct value * |
| 790 | fortran_argument_convert (struct value *value, bool is_artificial) |
| 791 | { |
| 792 | if (!is_artificial) |
| 793 | { |
| 794 | /* If the value is not in the inferior e.g. registers values, |
| 795 | convenience variables and user input. */ |
| 796 | if (VALUE_LVAL (value) != lval_memory) |
| 797 | { |
| 798 | struct type *type = value_type (value); |
| 799 | const int length = TYPE_LENGTH (type); |
| 800 | const CORE_ADDR addr |
| 801 | = value_as_long (value_allocate_space_in_inferior (length)); |
| 802 | write_memory (addr, value_contents (value), length); |
| 803 | struct value *val |
| 804 | = value_from_contents_and_address (type, value_contents (value), |
| 805 | addr); |
| 806 | return value_addr (val); |
| 807 | } |
| 808 | else |
| 809 | return value_addr (value); /* Program variables, e.g. arrays. */ |
| 810 | } |
| 811 | return value; |
| 812 | } |
| 813 | |
| 814 | /* See f-lang.h. */ |
| 815 | |
| 816 | struct type * |
| 817 | fortran_preserve_arg_pointer (struct value *arg, struct type *type) |
| 818 | { |
| 819 | if (value_type (arg)->code () == TYPE_CODE_PTR) |
| 820 | return value_type (arg); |
| 821 | return type; |
| 822 | } |