| 1 | /* Fortran language support routines for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1993-2018 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 "f-lang.h" |
| 31 | #include "valprint.h" |
| 32 | #include "value.h" |
| 33 | #include "cp-support.h" |
| 34 | #include "charset.h" |
| 35 | #include "c-lang.h" |
| 36 | |
| 37 | |
| 38 | /* Local functions */ |
| 39 | |
| 40 | static void f_printchar (int c, struct type *type, struct ui_file * stream); |
| 41 | static void f_emit_char (int c, struct type *type, |
| 42 | struct ui_file * stream, int quoter); |
| 43 | |
| 44 | /* Return the encoding that should be used for the character type |
| 45 | TYPE. */ |
| 46 | |
| 47 | static const char * |
| 48 | f_get_encoding (struct type *type) |
| 49 | { |
| 50 | const char *encoding; |
| 51 | |
| 52 | switch (TYPE_LENGTH (type)) |
| 53 | { |
| 54 | case 1: |
| 55 | encoding = target_charset (get_type_arch (type)); |
| 56 | break; |
| 57 | case 4: |
| 58 | if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG) |
| 59 | encoding = "UTF-32BE"; |
| 60 | else |
| 61 | encoding = "UTF-32LE"; |
| 62 | break; |
| 63 | |
| 64 | default: |
| 65 | error (_("unrecognized character type")); |
| 66 | } |
| 67 | |
| 68 | return encoding; |
| 69 | } |
| 70 | |
| 71 | /* Print the character C on STREAM as part of the contents of a literal |
| 72 | string whose delimiter is QUOTER. Note that that format for printing |
| 73 | characters and strings is language specific. |
| 74 | FIXME: This is a copy of the same function from c-exp.y. It should |
| 75 | be replaced with a true F77 version. */ |
| 76 | |
| 77 | static void |
| 78 | f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
| 79 | { |
| 80 | const char *encoding = f_get_encoding (type); |
| 81 | |
| 82 | generic_emit_char (c, type, stream, quoter, encoding); |
| 83 | } |
| 84 | |
| 85 | /* Implementation of la_printchar. */ |
| 86 | |
| 87 | static void |
| 88 | f_printchar (int c, struct type *type, struct ui_file *stream) |
| 89 | { |
| 90 | fputs_filtered ("'", stream); |
| 91 | LA_EMIT_CHAR (c, type, stream, '\''); |
| 92 | fputs_filtered ("'", stream); |
| 93 | } |
| 94 | |
| 95 | /* Print the character string STRING, printing at most LENGTH characters. |
| 96 | Printing stops early if the number hits print_max; repeat counts |
| 97 | are printed as appropriate. Print ellipses at the end if we |
| 98 | had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. |
| 99 | FIXME: This is a copy of the same function from c-exp.y. It should |
| 100 | be replaced with a true F77 version. */ |
| 101 | |
| 102 | static void |
| 103 | f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string, |
| 104 | unsigned int length, const char *encoding, int force_ellipses, |
| 105 | const struct value_print_options *options) |
| 106 | { |
| 107 | const char *type_encoding = f_get_encoding (type); |
| 108 | |
| 109 | if (TYPE_LENGTH (type) == 4) |
| 110 | fputs_filtered ("4_", stream); |
| 111 | |
| 112 | if (!encoding || !*encoding) |
| 113 | encoding = type_encoding; |
| 114 | |
| 115 | generic_printstr (stream, type, string, length, encoding, |
| 116 | force_ellipses, '\'', 0, options); |
| 117 | } |
| 118 | \f |
| 119 | |
| 120 | /* Table of operators and their precedences for printing expressions. */ |
| 121 | |
| 122 | static const struct op_print f_op_print_tab[] = |
| 123 | { |
| 124 | {"+", BINOP_ADD, PREC_ADD, 0}, |
| 125 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, |
| 126 | {"-", BINOP_SUB, PREC_ADD, 0}, |
| 127 | {"-", UNOP_NEG, PREC_PREFIX, 0}, |
| 128 | {"*", BINOP_MUL, PREC_MUL, 0}, |
| 129 | {"/", BINOP_DIV, PREC_MUL, 0}, |
| 130 | {"DIV", BINOP_INTDIV, PREC_MUL, 0}, |
| 131 | {"MOD", BINOP_REM, PREC_MUL, 0}, |
| 132 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, |
| 133 | {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, |
| 134 | {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, |
| 135 | {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, |
| 136 | {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0}, |
| 137 | {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0}, |
| 138 | {".LE.", BINOP_LEQ, PREC_ORDER, 0}, |
| 139 | {".GE.", BINOP_GEQ, PREC_ORDER, 0}, |
| 140 | {".GT.", BINOP_GTR, PREC_ORDER, 0}, |
| 141 | {".LT.", BINOP_LESS, PREC_ORDER, 0}, |
| 142 | {"**", UNOP_IND, PREC_PREFIX, 0}, |
| 143 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, |
| 144 | {NULL, OP_NULL, PREC_REPEAT, 0} |
| 145 | }; |
| 146 | \f |
| 147 | enum f_primitive_types { |
| 148 | f_primitive_type_character, |
| 149 | f_primitive_type_logical, |
| 150 | f_primitive_type_logical_s1, |
| 151 | f_primitive_type_logical_s2, |
| 152 | f_primitive_type_logical_s8, |
| 153 | f_primitive_type_integer, |
| 154 | f_primitive_type_integer_s2, |
| 155 | f_primitive_type_real, |
| 156 | f_primitive_type_real_s8, |
| 157 | f_primitive_type_real_s16, |
| 158 | f_primitive_type_complex_s8, |
| 159 | f_primitive_type_complex_s16, |
| 160 | f_primitive_type_void, |
| 161 | nr_f_primitive_types |
| 162 | }; |
| 163 | |
| 164 | static void |
| 165 | f_language_arch_info (struct gdbarch *gdbarch, |
| 166 | struct language_arch_info *lai) |
| 167 | { |
| 168 | const struct builtin_f_type *builtin = builtin_f_type (gdbarch); |
| 169 | |
| 170 | lai->string_char_type = builtin->builtin_character; |
| 171 | lai->primitive_type_vector |
| 172 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1, |
| 173 | struct type *); |
| 174 | |
| 175 | lai->primitive_type_vector [f_primitive_type_character] |
| 176 | = builtin->builtin_character; |
| 177 | lai->primitive_type_vector [f_primitive_type_logical] |
| 178 | = builtin->builtin_logical; |
| 179 | lai->primitive_type_vector [f_primitive_type_logical_s1] |
| 180 | = builtin->builtin_logical_s1; |
| 181 | lai->primitive_type_vector [f_primitive_type_logical_s2] |
| 182 | = builtin->builtin_logical_s2; |
| 183 | lai->primitive_type_vector [f_primitive_type_logical_s8] |
| 184 | = builtin->builtin_logical_s8; |
| 185 | lai->primitive_type_vector [f_primitive_type_real] |
| 186 | = builtin->builtin_real; |
| 187 | lai->primitive_type_vector [f_primitive_type_real_s8] |
| 188 | = builtin->builtin_real_s8; |
| 189 | lai->primitive_type_vector [f_primitive_type_real_s16] |
| 190 | = builtin->builtin_real_s16; |
| 191 | lai->primitive_type_vector [f_primitive_type_complex_s8] |
| 192 | = builtin->builtin_complex_s8; |
| 193 | lai->primitive_type_vector [f_primitive_type_complex_s16] |
| 194 | = builtin->builtin_complex_s16; |
| 195 | lai->primitive_type_vector [f_primitive_type_void] |
| 196 | = builtin->builtin_void; |
| 197 | |
| 198 | lai->bool_type_symbol = "logical"; |
| 199 | lai->bool_type_default = builtin->builtin_logical_s2; |
| 200 | } |
| 201 | |
| 202 | /* Remove the modules separator :: from the default break list. */ |
| 203 | |
| 204 | static const char * |
| 205 | f_word_break_characters (void) |
| 206 | { |
| 207 | static char *retval; |
| 208 | |
| 209 | if (!retval) |
| 210 | { |
| 211 | char *s; |
| 212 | |
| 213 | retval = xstrdup (default_word_break_characters ()); |
| 214 | s = strchr (retval, ':'); |
| 215 | if (s) |
| 216 | { |
| 217 | char *last_char = &s[strlen (s) - 1]; |
| 218 | |
| 219 | *s = *last_char; |
| 220 | *last_char = 0; |
| 221 | } |
| 222 | } |
| 223 | return retval; |
| 224 | } |
| 225 | |
| 226 | /* Consider the modules separator :: as a valid symbol name character |
| 227 | class. */ |
| 228 | |
| 229 | static void |
| 230 | f_collect_symbol_completion_matches (completion_tracker &tracker, |
| 231 | complete_symbol_mode mode, |
| 232 | symbol_name_match_type compare_name, |
| 233 | const char *text, const char *word, |
| 234 | enum type_code code) |
| 235 | { |
| 236 | default_collect_symbol_completion_matches_break_on (tracker, mode, |
| 237 | compare_name, |
| 238 | text, word, ":", code); |
| 239 | } |
| 240 | |
| 241 | static const char *f_extensions[] = |
| 242 | { |
| 243 | ".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP", |
| 244 | ".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08", |
| 245 | NULL |
| 246 | }; |
| 247 | |
| 248 | extern const struct language_defn f_language_defn = |
| 249 | { |
| 250 | "fortran", |
| 251 | "Fortran", |
| 252 | language_fortran, |
| 253 | range_check_on, |
| 254 | case_sensitive_off, |
| 255 | array_column_major, |
| 256 | macro_expansion_no, |
| 257 | f_extensions, |
| 258 | &exp_descriptor_standard, |
| 259 | f_parse, /* parser */ |
| 260 | f_yyerror, /* parser error function */ |
| 261 | null_post_parser, |
| 262 | f_printchar, /* Print character constant */ |
| 263 | f_printstr, /* function to print string constant */ |
| 264 | f_emit_char, /* Function to print a single character */ |
| 265 | f_print_type, /* Print a type using appropriate syntax */ |
| 266 | default_print_typedef, /* Print a typedef using appropriate syntax */ |
| 267 | f_val_print, /* Print a value using appropriate syntax */ |
| 268 | c_value_print, /* FIXME */ |
| 269 | default_read_var_value, /* la_read_var_value */ |
| 270 | NULL, /* Language specific skip_trampoline */ |
| 271 | NULL, /* name_of_this */ |
| 272 | cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 273 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 274 | |
| 275 | /* We could support demangling here to provide module namespaces |
| 276 | also for inferiors with only minimal symbol table (ELF symbols). |
| 277 | Just the mangling standard is not standardized across compilers |
| 278 | and there is no DW_AT_producer available for inferiors with only |
| 279 | the ELF symbols to check the mangling kind. */ |
| 280 | NULL, /* Language specific symbol demangler */ |
| 281 | NULL, |
| 282 | NULL, /* Language specific |
| 283 | class_name_from_physname */ |
| 284 | f_op_print_tab, /* expression operators for printing */ |
| 285 | 0, /* arrays are first-class (not c-style) */ |
| 286 | 1, /* String lower bound */ |
| 287 | f_word_break_characters, |
| 288 | f_collect_symbol_completion_matches, |
| 289 | f_language_arch_info, |
| 290 | default_print_array_index, |
| 291 | default_pass_by_reference, |
| 292 | default_get_string, |
| 293 | c_watch_location_expression, |
| 294 | NULL, /* la_get_symbol_name_matcher */ |
| 295 | iterate_over_symbols, |
| 296 | default_search_name_hash, |
| 297 | &default_varobj_ops, |
| 298 | NULL, |
| 299 | NULL, |
| 300 | LANG_MAGIC |
| 301 | }; |
| 302 | |
| 303 | static void * |
| 304 | build_fortran_types (struct gdbarch *gdbarch) |
| 305 | { |
| 306 | struct builtin_f_type *builtin_f_type |
| 307 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type); |
| 308 | |
| 309 | builtin_f_type->builtin_void |
| 310 | = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "VOID"); |
| 311 | |
| 312 | builtin_f_type->builtin_character |
| 313 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character"); |
| 314 | |
| 315 | builtin_f_type->builtin_logical_s1 |
| 316 | = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1"); |
| 317 | |
| 318 | builtin_f_type->builtin_integer_s2 |
| 319 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0, |
| 320 | "integer*2"); |
| 321 | |
| 322 | builtin_f_type->builtin_logical_s2 |
| 323 | = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1, |
| 324 | "logical*2"); |
| 325 | |
| 326 | builtin_f_type->builtin_logical_s8 |
| 327 | = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1, |
| 328 | "logical*8"); |
| 329 | |
| 330 | builtin_f_type->builtin_integer |
| 331 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0, |
| 332 | "integer"); |
| 333 | |
| 334 | builtin_f_type->builtin_logical |
| 335 | = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1, |
| 336 | "logical*4"); |
| 337 | |
| 338 | builtin_f_type->builtin_real |
| 339 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), |
| 340 | "real", gdbarch_float_format (gdbarch)); |
| 341 | builtin_f_type->builtin_real_s8 |
| 342 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), |
| 343 | "real*8", gdbarch_double_format (gdbarch)); |
| 344 | builtin_f_type->builtin_real_s16 |
| 345 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
| 346 | "real*16", gdbarch_long_double_format (gdbarch)); |
| 347 | |
| 348 | builtin_f_type->builtin_complex_s8 |
| 349 | = arch_complex_type (gdbarch, "complex*8", |
| 350 | builtin_f_type->builtin_real); |
| 351 | builtin_f_type->builtin_complex_s16 |
| 352 | = arch_complex_type (gdbarch, "complex*16", |
| 353 | builtin_f_type->builtin_real_s8); |
| 354 | builtin_f_type->builtin_complex_s32 |
| 355 | = arch_complex_type (gdbarch, "complex*32", |
| 356 | builtin_f_type->builtin_real_s16); |
| 357 | |
| 358 | return builtin_f_type; |
| 359 | } |
| 360 | |
| 361 | static struct gdbarch_data *f_type_data; |
| 362 | |
| 363 | const struct builtin_f_type * |
| 364 | builtin_f_type (struct gdbarch *gdbarch) |
| 365 | { |
| 366 | return (const struct builtin_f_type *) gdbarch_data (gdbarch, f_type_data); |
| 367 | } |
| 368 | |
| 369 | void |
| 370 | _initialize_f_language (void) |
| 371 | { |
| 372 | f_type_data = gdbarch_data_register_post_init (build_fortran_types); |
| 373 | } |