Commit | Line | Data |
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c906108c | 1 | /* Fortran language support routines for GDB, the GNU debugger. |
ce27fb25 | 2 | |
42a4f53d | 3 | Copyright (C) 1993-2019 Free Software Foundation, Inc. |
ce27fb25 | 4 | |
c906108c SS |
5 | Contributed by Motorola. Adapted from the C parser by Farooq Butt |
6 | (fmbutt@engage.sps.mot.com). | |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
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 | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 13 | (at your option) any later version. |
c906108c | 14 | |
c5aa993b JM |
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. | |
c906108c | 19 | |
c5aa993b | 20 | You should have received a copy of the GNU General Public License |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
22 | |
23 | #include "defs.h" | |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "gdbtypes.h" | |
26 | #include "expression.h" | |
27 | #include "parser-defs.h" | |
28 | #include "language.h" | |
a53b64ea | 29 | #include "varobj.h" |
aa3cfbda | 30 | #include "gdbcore.h" |
c906108c | 31 | #include "f-lang.h" |
745b8ca0 | 32 | #include "valprint.h" |
5f9a71c3 | 33 | #include "value.h" |
f55ee35c | 34 | #include "cp-support.h" |
3b2b8fea | 35 | #include "charset.h" |
8e069a98 | 36 | #include "c-lang.h" |
c906108c | 37 | |
c906108c | 38 | |
c906108c SS |
39 | /* Local functions */ |
40 | ||
6c7a06a3 TT |
41 | static void f_printchar (int c, struct type *type, struct ui_file * stream); |
42 | static void f_emit_char (int c, struct type *type, | |
43 | struct ui_file * stream, int quoter); | |
c906108c | 44 | |
3b2b8fea TT |
45 | /* Return the encoding that should be used for the character type |
46 | TYPE. */ | |
47 | ||
48 | static const char * | |
49 | f_get_encoding (struct type *type) | |
50 | { | |
51 | const char *encoding; | |
52 | ||
53 | switch (TYPE_LENGTH (type)) | |
54 | { | |
55 | case 1: | |
56 | encoding = target_charset (get_type_arch (type)); | |
57 | break; | |
58 | case 4: | |
59 | if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG) | |
60 | encoding = "UTF-32BE"; | |
61 | else | |
62 | encoding = "UTF-32LE"; | |
63 | break; | |
64 | ||
65 | default: | |
66 | error (_("unrecognized character type")); | |
67 | } | |
68 | ||
69 | return encoding; | |
70 | } | |
71 | ||
c906108c SS |
72 | /* Print the character C on STREAM as part of the contents of a literal |
73 | string whose delimiter is QUOTER. Note that that format for printing | |
74 | characters and strings is language specific. | |
75 | FIXME: This is a copy of the same function from c-exp.y. It should | |
76 | be replaced with a true F77 version. */ | |
77 | ||
78 | static void | |
6c7a06a3 | 79 | f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
c906108c | 80 | { |
3b2b8fea | 81 | const char *encoding = f_get_encoding (type); |
c5aa993b | 82 | |
3b2b8fea | 83 | generic_emit_char (c, type, stream, quoter, encoding); |
c906108c SS |
84 | } |
85 | ||
3b2b8fea | 86 | /* Implementation of la_printchar. */ |
c906108c SS |
87 | |
88 | static void | |
6c7a06a3 | 89 | f_printchar (int c, struct type *type, struct ui_file *stream) |
c906108c SS |
90 | { |
91 | fputs_filtered ("'", stream); | |
6c7a06a3 | 92 | LA_EMIT_CHAR (c, type, stream, '\''); |
c906108c SS |
93 | fputs_filtered ("'", stream); |
94 | } | |
95 | ||
96 | /* Print the character string STRING, printing at most LENGTH characters. | |
97 | Printing stops early if the number hits print_max; repeat counts | |
98 | are printed as appropriate. Print ellipses at the end if we | |
99 | had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. | |
100 | FIXME: This is a copy of the same function from c-exp.y. It should | |
0963b4bd | 101 | be replaced with a true F77 version. */ |
c906108c SS |
102 | |
103 | static void | |
6c7a06a3 | 104 | f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string, |
be759fcf | 105 | unsigned int length, const char *encoding, int force_ellipses, |
79a45b7d | 106 | const struct value_print_options *options) |
c906108c | 107 | { |
3b2b8fea | 108 | const char *type_encoding = f_get_encoding (type); |
c5aa993b | 109 | |
3b2b8fea TT |
110 | if (TYPE_LENGTH (type) == 4) |
111 | fputs_filtered ("4_", stream); | |
c5aa993b | 112 | |
3b2b8fea TT |
113 | if (!encoding || !*encoding) |
114 | encoding = type_encoding; | |
c5aa993b | 115 | |
3b2b8fea TT |
116 | generic_printstr (stream, type, string, length, encoding, |
117 | force_ellipses, '\'', 0, options); | |
c906108c | 118 | } |
c906108c | 119 | \f |
c5aa993b | 120 | |
c906108c SS |
121 | /* Table of operators and their precedences for printing expressions. */ |
122 | ||
c5aa993b JM |
123 | static const struct op_print f_op_print_tab[] = |
124 | { | |
125 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
126 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
127 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
128 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
129 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
130 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
131 | {"DIV", BINOP_INTDIV, PREC_MUL, 0}, | |
132 | {"MOD", BINOP_REM, PREC_MUL, 0}, | |
133 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
134 | {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
135 | {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
136 | {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
137 | {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0}, | |
138 | {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
139 | {".LE.", BINOP_LEQ, PREC_ORDER, 0}, | |
140 | {".GE.", BINOP_GEQ, PREC_ORDER, 0}, | |
141 | {".GT.", BINOP_GTR, PREC_ORDER, 0}, | |
142 | {".LT.", BINOP_LESS, PREC_ORDER, 0}, | |
143 | {"**", UNOP_IND, PREC_PREFIX, 0}, | |
144 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
f486487f | 145 | {NULL, OP_NULL, PREC_REPEAT, 0} |
c906108c SS |
146 | }; |
147 | \f | |
cad351d1 UW |
148 | enum f_primitive_types { |
149 | f_primitive_type_character, | |
150 | f_primitive_type_logical, | |
151 | f_primitive_type_logical_s1, | |
152 | f_primitive_type_logical_s2, | |
ce4b0682 | 153 | f_primitive_type_logical_s8, |
cad351d1 UW |
154 | f_primitive_type_integer, |
155 | f_primitive_type_integer_s2, | |
156 | f_primitive_type_real, | |
157 | f_primitive_type_real_s8, | |
158 | f_primitive_type_real_s16, | |
159 | f_primitive_type_complex_s8, | |
160 | f_primitive_type_complex_s16, | |
161 | f_primitive_type_void, | |
162 | nr_f_primitive_types | |
c906108c SS |
163 | }; |
164 | ||
cad351d1 UW |
165 | static void |
166 | f_language_arch_info (struct gdbarch *gdbarch, | |
167 | struct language_arch_info *lai) | |
168 | { | |
54ef06c7 UW |
169 | const struct builtin_f_type *builtin = builtin_f_type (gdbarch); |
170 | ||
171 | lai->string_char_type = builtin->builtin_character; | |
cad351d1 UW |
172 | lai->primitive_type_vector |
173 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1, | |
174 | struct type *); | |
175 | ||
176 | lai->primitive_type_vector [f_primitive_type_character] | |
54ef06c7 | 177 | = builtin->builtin_character; |
cad351d1 | 178 | lai->primitive_type_vector [f_primitive_type_logical] |
54ef06c7 | 179 | = builtin->builtin_logical; |
cad351d1 | 180 | lai->primitive_type_vector [f_primitive_type_logical_s1] |
54ef06c7 | 181 | = builtin->builtin_logical_s1; |
cad351d1 | 182 | lai->primitive_type_vector [f_primitive_type_logical_s2] |
54ef06c7 | 183 | = builtin->builtin_logical_s2; |
ce4b0682 SDJ |
184 | lai->primitive_type_vector [f_primitive_type_logical_s8] |
185 | = builtin->builtin_logical_s8; | |
cad351d1 | 186 | lai->primitive_type_vector [f_primitive_type_real] |
54ef06c7 | 187 | = builtin->builtin_real; |
cad351d1 | 188 | lai->primitive_type_vector [f_primitive_type_real_s8] |
54ef06c7 | 189 | = builtin->builtin_real_s8; |
cad351d1 | 190 | lai->primitive_type_vector [f_primitive_type_real_s16] |
54ef06c7 | 191 | = builtin->builtin_real_s16; |
cad351d1 | 192 | lai->primitive_type_vector [f_primitive_type_complex_s8] |
54ef06c7 | 193 | = builtin->builtin_complex_s8; |
cad351d1 | 194 | lai->primitive_type_vector [f_primitive_type_complex_s16] |
54ef06c7 | 195 | = builtin->builtin_complex_s16; |
cad351d1 | 196 | lai->primitive_type_vector [f_primitive_type_void] |
54ef06c7 | 197 | = builtin->builtin_void; |
fbb06eb1 UW |
198 | |
199 | lai->bool_type_symbol = "logical"; | |
200 | lai->bool_type_default = builtin->builtin_logical_s2; | |
cad351d1 UW |
201 | } |
202 | ||
f55ee35c JK |
203 | /* Remove the modules separator :: from the default break list. */ |
204 | ||
67cb5b2d | 205 | static const char * |
f55ee35c JK |
206 | f_word_break_characters (void) |
207 | { | |
208 | static char *retval; | |
209 | ||
210 | if (!retval) | |
211 | { | |
212 | char *s; | |
213 | ||
214 | retval = xstrdup (default_word_break_characters ()); | |
215 | s = strchr (retval, ':'); | |
216 | if (s) | |
217 | { | |
218 | char *last_char = &s[strlen (s) - 1]; | |
219 | ||
220 | *s = *last_char; | |
221 | *last_char = 0; | |
222 | } | |
223 | } | |
224 | return retval; | |
225 | } | |
226 | ||
3e43a32a MS |
227 | /* Consider the modules separator :: as a valid symbol name character |
228 | class. */ | |
f55ee35c | 229 | |
eb3ff9a5 PA |
230 | static void |
231 | f_collect_symbol_completion_matches (completion_tracker &tracker, | |
c6756f62 | 232 | complete_symbol_mode mode, |
b5ec771e | 233 | symbol_name_match_type compare_name, |
eb3ff9a5 PA |
234 | const char *text, const char *word, |
235 | enum type_code code) | |
f55ee35c | 236 | { |
c6756f62 | 237 | default_collect_symbol_completion_matches_break_on (tracker, mode, |
b5ec771e | 238 | compare_name, |
eb3ff9a5 | 239 | text, word, ":", code); |
f55ee35c JK |
240 | } |
241 | ||
9dad4a58 AB |
242 | /* Special expression evaluation cases for Fortran. */ |
243 | struct value * | |
244 | evaluate_subexp_f (struct type *expect_type, struct expression *exp, | |
245 | int *pos, enum noside noside) | |
246 | { | |
247 | /* Currently no special handling is required. */ | |
248 | return evaluate_subexp_standard (expect_type, exp, pos, noside); | |
249 | } | |
250 | ||
56618e20 TT |
251 | static const char *f_extensions[] = |
252 | { | |
253 | ".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP", | |
254 | ".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08", | |
255 | NULL | |
256 | }; | |
257 | ||
9dad4a58 AB |
258 | /* Expression processing for Fortran. */ |
259 | static const struct exp_descriptor exp_descriptor_f = | |
260 | { | |
261 | print_subexp_standard, | |
262 | operator_length_standard, | |
263 | operator_check_standard, | |
264 | op_name_standard, | |
265 | dump_subexp_body_standard, | |
266 | evaluate_subexp_f | |
267 | }; | |
268 | ||
47e77640 | 269 | extern const struct language_defn f_language_defn = |
c5aa993b | 270 | { |
c906108c | 271 | "fortran", |
6abde28f | 272 | "Fortran", |
c906108c | 273 | language_fortran, |
c906108c | 274 | range_check_on, |
63872f9d | 275 | case_sensitive_off, |
7ca2d3a3 | 276 | array_column_major, |
9a044a89 | 277 | macro_expansion_no, |
56618e20 | 278 | f_extensions, |
9dad4a58 | 279 | &exp_descriptor_f, |
c906108c | 280 | f_parse, /* parser */ |
e85c3284 | 281 | null_post_parser, |
c906108c SS |
282 | f_printchar, /* Print character constant */ |
283 | f_printstr, /* function to print string constant */ | |
284 | f_emit_char, /* Function to print a single character */ | |
c5aa993b | 285 | f_print_type, /* Print a type using appropriate syntax */ |
5c6ce71d | 286 | default_print_typedef, /* Print a typedef using appropriate syntax */ |
c906108c | 287 | f_val_print, /* Print a value using appropriate syntax */ |
c5aa993b | 288 | c_value_print, /* FIXME */ |
a5ee536b | 289 | default_read_var_value, /* la_read_var_value */ |
f636b87d | 290 | NULL, /* Language specific skip_trampoline */ |
2b2d9e11 | 291 | NULL, /* name_of_this */ |
59cc4834 | 292 | false, /* la_store_sym_names_in_linkage_form_p */ |
f55ee35c | 293 | cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
b368761e | 294 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
8b302db8 TT |
295 | |
296 | /* We could support demangling here to provide module namespaces | |
297 | also for inferiors with only minimal symbol table (ELF symbols). | |
298 | Just the mangling standard is not standardized across compilers | |
299 | and there is no DW_AT_producer available for inferiors with only | |
300 | the ELF symbols to check the mangling kind. */ | |
9a3d7dfd | 301 | NULL, /* Language specific symbol demangler */ |
8b302db8 | 302 | NULL, |
3e43a32a MS |
303 | NULL, /* Language specific |
304 | class_name_from_physname */ | |
c906108c SS |
305 | f_op_print_tab, /* expression operators for printing */ |
306 | 0, /* arrays are first-class (not c-style) */ | |
307 | 1, /* String lower bound */ | |
f55ee35c | 308 | f_word_break_characters, |
eb3ff9a5 | 309 | f_collect_symbol_completion_matches, |
cad351d1 | 310 | f_language_arch_info, |
e79af960 | 311 | default_print_array_index, |
41f1b697 | 312 | default_pass_by_reference, |
ae6a3a4c | 313 | default_get_string, |
43cc5389 | 314 | c_watch_location_expression, |
b5ec771e | 315 | NULL, /* la_get_symbol_name_matcher */ |
f8eba3c6 | 316 | iterate_over_symbols, |
5ffa0793 | 317 | default_search_name_hash, |
a53b64ea | 318 | &default_varobj_ops, |
bb2ec1b3 TT |
319 | NULL, |
320 | NULL, | |
c906108c | 321 | LANG_MAGIC |
c5aa993b | 322 | }; |
c906108c | 323 | |
54ef06c7 UW |
324 | static void * |
325 | build_fortran_types (struct gdbarch *gdbarch) | |
c906108c | 326 | { |
54ef06c7 UW |
327 | struct builtin_f_type *builtin_f_type |
328 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type); | |
329 | ||
e9bb382b | 330 | builtin_f_type->builtin_void |
77b7c781 | 331 | = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "VOID"); |
e9bb382b UW |
332 | |
333 | builtin_f_type->builtin_character | |
334 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character"); | |
335 | ||
336 | builtin_f_type->builtin_logical_s1 | |
337 | = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1"); | |
338 | ||
339 | builtin_f_type->builtin_integer_s2 | |
340 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0, | |
341 | "integer*2"); | |
342 | ||
343 | builtin_f_type->builtin_logical_s2 | |
344 | = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1, | |
345 | "logical*2"); | |
346 | ||
ce4b0682 SDJ |
347 | builtin_f_type->builtin_logical_s8 |
348 | = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1, | |
349 | "logical*8"); | |
350 | ||
e9bb382b UW |
351 | builtin_f_type->builtin_integer |
352 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0, | |
353 | "integer"); | |
354 | ||
355 | builtin_f_type->builtin_logical | |
356 | = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1, | |
357 | "logical*4"); | |
358 | ||
359 | builtin_f_type->builtin_real | |
360 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), | |
49f190bc | 361 | "real", gdbarch_float_format (gdbarch)); |
e9bb382b UW |
362 | builtin_f_type->builtin_real_s8 |
363 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
49f190bc | 364 | "real*8", gdbarch_double_format (gdbarch)); |
e9bb382b UW |
365 | builtin_f_type->builtin_real_s16 |
366 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), | |
49f190bc | 367 | "real*16", gdbarch_long_double_format (gdbarch)); |
e9bb382b UW |
368 | |
369 | builtin_f_type->builtin_complex_s8 | |
370 | = arch_complex_type (gdbarch, "complex*8", | |
371 | builtin_f_type->builtin_real); | |
372 | builtin_f_type->builtin_complex_s16 | |
373 | = arch_complex_type (gdbarch, "complex*16", | |
374 | builtin_f_type->builtin_real_s8); | |
375 | builtin_f_type->builtin_complex_s32 | |
376 | = arch_complex_type (gdbarch, "complex*32", | |
377 | builtin_f_type->builtin_real_s16); | |
54ef06c7 UW |
378 | |
379 | return builtin_f_type; | |
380 | } | |
381 | ||
382 | static struct gdbarch_data *f_type_data; | |
383 | ||
384 | const struct builtin_f_type * | |
385 | builtin_f_type (struct gdbarch *gdbarch) | |
386 | { | |
9a3c8263 | 387 | return (const struct builtin_f_type *) gdbarch_data (gdbarch, f_type_data); |
4e845cd3 MS |
388 | } |
389 | ||
390 | void | |
391 | _initialize_f_language (void) | |
392 | { | |
54ef06c7 | 393 | f_type_data = gdbarch_data_register_post_init (build_fortran_types); |
c906108c | 394 | } |
aa3cfbda RB |
395 | |
396 | /* See f-lang.h. */ | |
397 | ||
398 | struct value * | |
399 | fortran_argument_convert (struct value *value, bool is_artificial) | |
400 | { | |
401 | if (!is_artificial) | |
402 | { | |
403 | /* If the value is not in the inferior e.g. registers values, | |
404 | convenience variables and user input. */ | |
405 | if (VALUE_LVAL (value) != lval_memory) | |
406 | { | |
407 | struct type *type = value_type (value); | |
408 | const int length = TYPE_LENGTH (type); | |
409 | const CORE_ADDR addr | |
410 | = value_as_long (value_allocate_space_in_inferior (length)); | |
411 | write_memory (addr, value_contents (value), length); | |
412 | struct value *val | |
413 | = value_from_contents_and_address (type, value_contents (value), | |
414 | addr); | |
415 | return value_addr (val); | |
416 | } | |
417 | else | |
418 | return value_addr (value); /* Program variables, e.g. arrays. */ | |
419 | } | |
420 | return value; | |
421 | } | |
422 | ||
423 | /* See f-lang.h. */ | |
424 | ||
425 | struct type * | |
426 | fortran_preserve_arg_pointer (struct value *arg, struct type *type) | |
427 | { | |
428 | if (TYPE_CODE (value_type (arg)) == TYPE_CODE_PTR) | |
429 | return value_type (arg); | |
430 | return type; | |
431 | } |