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c906108c | 1 | /* Fortran language support routines for GDB, the GNU debugger. |
ce27fb25 | 2 | |
b811d2c2 | 3 | Copyright (C) 1993-2020 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" | |
4de283e4 | 24 | #include "symtab.h" |
d55e5aa6 | 25 | #include "gdbtypes.h" |
4de283e4 | 26 | #include "expression.h" |
d55e5aa6 | 27 | #include "parser-defs.h" |
4de283e4 TT |
28 | #include "language.h" |
29 | #include "varobj.h" | |
30 | #include "gdbcore.h" | |
31 | #include "f-lang.h" | |
745b8ca0 | 32 | #include "valprint.h" |
5f9a71c3 | 33 | #include "value.h" |
4de283e4 TT |
34 | #include "cp-support.h" |
35 | #include "charset.h" | |
36 | #include "c-lang.h" | |
37 | #include "target-float.h" | |
0d12e84c | 38 | #include "gdbarch.h" |
4de283e4 TT |
39 | |
40 | #include <math.h> | |
c906108c | 41 | |
c906108c SS |
42 | /* Local functions */ |
43 | ||
3b2b8fea TT |
44 | /* Return the encoding that should be used for the character type |
45 | TYPE. */ | |
46 | ||
1a0ea399 AB |
47 | const char * |
48 | f_language::get_encoding (struct type *type) | |
3b2b8fea TT |
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: | |
34877895 | 58 | if (type_byte_order (type) == BFD_ENDIAN_BIG) |
3b2b8fea TT |
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 | ||
c906108c | 71 | \f |
c5aa993b | 72 | |
c906108c SS |
73 | /* Table of operators and their precedences for printing expressions. */ |
74 | ||
1a0ea399 | 75 | const struct op_print f_language::op_print_tab[] = |
c5aa993b JM |
76 | { |
77 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
78 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, | |
79 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
80 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
81 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
82 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
83 | {"DIV", BINOP_INTDIV, PREC_MUL, 0}, | |
84 | {"MOD", BINOP_REM, PREC_MUL, 0}, | |
85 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
86 | {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
87 | {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
88 | {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
89 | {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0}, | |
90 | {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
91 | {".LE.", BINOP_LEQ, PREC_ORDER, 0}, | |
92 | {".GE.", BINOP_GEQ, PREC_ORDER, 0}, | |
93 | {".GT.", BINOP_GTR, PREC_ORDER, 0}, | |
94 | {".LT.", BINOP_LESS, PREC_ORDER, 0}, | |
95 | {"**", UNOP_IND, PREC_PREFIX, 0}, | |
96 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
f486487f | 97 | {NULL, OP_NULL, PREC_REPEAT, 0} |
c906108c SS |
98 | }; |
99 | \f | |
c906108c | 100 | |
6d816919 AB |
101 | /* Called from fortran_value_subarray to take a slice of an array or a |
102 | string. ARRAY is the array or string to be accessed. EXP, POS, and | |
103 | NOSIDE are as for evaluate_subexp_standard. Return a value that is a | |
104 | slice of the array. */ | |
105 | ||
106 | static struct value * | |
107 | value_f90_subarray (struct value *array, | |
108 | struct expression *exp, int *pos, enum noside noside) | |
109 | { | |
110 | int pc = (*pos) + 1; | |
6b4c676c | 111 | LONGEST low_bound, high_bound, stride; |
6d816919 | 112 | struct type *range = check_typedef (value_type (array)->index_type ()); |
f2d8e4c5 AB |
113 | enum range_flag range_flag |
114 | = (enum range_flag) longest_to_int (exp->elts[pc].longconst); | |
6d816919 AB |
115 | |
116 | *pos += 3; | |
117 | ||
f2d8e4c5 | 118 | if (range_flag & RANGE_LOW_BOUND_DEFAULT) |
6d816919 AB |
119 | low_bound = range->bounds ()->low.const_val (); |
120 | else | |
121 | low_bound = value_as_long (evaluate_subexp (nullptr, exp, pos, noside)); | |
122 | ||
f2d8e4c5 | 123 | if (range_flag & RANGE_HIGH_BOUND_DEFAULT) |
6d816919 AB |
124 | high_bound = range->bounds ()->high.const_val (); |
125 | else | |
126 | high_bound = value_as_long (evaluate_subexp (nullptr, exp, pos, noside)); | |
127 | ||
6b4c676c AB |
128 | if (range_flag & RANGE_HAS_STRIDE) |
129 | stride = value_as_long (evaluate_subexp (nullptr, exp, pos, noside)); | |
130 | else | |
131 | stride = 1; | |
132 | ||
133 | if (stride != 1) | |
134 | error (_("Fortran array strides are not currently supported")); | |
135 | ||
6d816919 AB |
136 | return value_slice (array, low_bound, high_bound - low_bound + 1); |
137 | } | |
138 | ||
139 | /* Helper for skipping all the arguments in an undetermined argument list. | |
140 | This function was designed for use in the OP_F77_UNDETERMINED_ARGLIST | |
141 | case of evaluate_subexp_standard as multiple, but not all, code paths | |
142 | require a generic skip. */ | |
143 | ||
144 | static void | |
145 | skip_undetermined_arglist (int nargs, struct expression *exp, int *pos, | |
146 | enum noside noside) | |
147 | { | |
148 | for (int i = 0; i < nargs; ++i) | |
149 | evaluate_subexp (nullptr, exp, pos, noside); | |
150 | } | |
151 | ||
152 | /* Return the number of dimensions for a Fortran array or string. */ | |
153 | ||
154 | int | |
155 | calc_f77_array_dims (struct type *array_type) | |
156 | { | |
157 | int ndimen = 1; | |
158 | struct type *tmp_type; | |
159 | ||
160 | if ((array_type->code () == TYPE_CODE_STRING)) | |
161 | return 1; | |
162 | ||
163 | if ((array_type->code () != TYPE_CODE_ARRAY)) | |
164 | error (_("Can't get dimensions for a non-array type")); | |
165 | ||
166 | tmp_type = array_type; | |
167 | ||
168 | while ((tmp_type = TYPE_TARGET_TYPE (tmp_type))) | |
169 | { | |
170 | if (tmp_type->code () == TYPE_CODE_ARRAY) | |
171 | ++ndimen; | |
172 | } | |
173 | return ndimen; | |
174 | } | |
175 | ||
176 | /* Called from evaluate_subexp_standard to perform array indexing, and | |
177 | sub-range extraction, for Fortran. As well as arrays this function | |
178 | also handles strings as they can be treated like arrays of characters. | |
179 | ARRAY is the array or string being accessed. EXP, POS, and NOSIDE are | |
180 | as for evaluate_subexp_standard, and NARGS is the number of arguments | |
181 | in this access (e.g. 'array (1,2,3)' would be NARGS 3). */ | |
182 | ||
183 | static struct value * | |
184 | fortran_value_subarray (struct value *array, struct expression *exp, | |
185 | int *pos, int nargs, enum noside noside) | |
186 | { | |
187 | if (exp->elts[*pos].opcode == OP_RANGE) | |
188 | return value_f90_subarray (array, exp, pos, noside); | |
189 | ||
190 | if (noside == EVAL_SKIP) | |
191 | { | |
192 | skip_undetermined_arglist (nargs, exp, pos, noside); | |
193 | /* Return the dummy value with the correct type. */ | |
194 | return array; | |
195 | } | |
196 | ||
197 | LONGEST subscript_array[MAX_FORTRAN_DIMS]; | |
198 | int ndimensions = 1; | |
199 | struct type *type = check_typedef (value_type (array)); | |
200 | ||
201 | if (nargs > MAX_FORTRAN_DIMS) | |
202 | error (_("Too many subscripts for F77 (%d Max)"), MAX_FORTRAN_DIMS); | |
203 | ||
204 | ndimensions = calc_f77_array_dims (type); | |
205 | ||
206 | if (nargs != ndimensions) | |
207 | error (_("Wrong number of subscripts")); | |
208 | ||
209 | gdb_assert (nargs > 0); | |
210 | ||
211 | /* Now that we know we have a legal array subscript expression let us | |
212 | actually find out where this element exists in the array. */ | |
213 | ||
214 | /* Take array indices left to right. */ | |
215 | for (int i = 0; i < nargs; i++) | |
216 | { | |
217 | /* Evaluate each subscript; it must be a legal integer in F77. */ | |
218 | value *arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
219 | ||
220 | /* Fill in the subscript array. */ | |
221 | subscript_array[i] = value_as_long (arg2); | |
222 | } | |
223 | ||
224 | /* Internal type of array is arranged right to left. */ | |
225 | for (int i = nargs; i > 0; i--) | |
226 | { | |
227 | struct type *array_type = check_typedef (value_type (array)); | |
228 | LONGEST index = subscript_array[i - 1]; | |
229 | ||
230 | array = value_subscripted_rvalue (array, index, | |
231 | f77_get_lowerbound (array_type)); | |
232 | } | |
233 | ||
234 | return array; | |
235 | } | |
236 | ||
9dad4a58 | 237 | /* Special expression evaluation cases for Fortran. */ |
cb8c24b6 SM |
238 | |
239 | static struct value * | |
9dad4a58 AB |
240 | evaluate_subexp_f (struct type *expect_type, struct expression *exp, |
241 | int *pos, enum noside noside) | |
242 | { | |
b6d03bb2 | 243 | struct value *arg1 = NULL, *arg2 = NULL; |
4d00f5d8 AB |
244 | enum exp_opcode op; |
245 | int pc; | |
246 | struct type *type; | |
247 | ||
248 | pc = *pos; | |
249 | *pos += 1; | |
250 | op = exp->elts[pc].opcode; | |
251 | ||
252 | switch (op) | |
253 | { | |
254 | default: | |
255 | *pos -= 1; | |
256 | return evaluate_subexp_standard (expect_type, exp, pos, noside); | |
257 | ||
0841c79a | 258 | case UNOP_ABS: |
fe1fe7ea | 259 | arg1 = evaluate_subexp (nullptr, exp, pos, noside); |
0841c79a AB |
260 | if (noside == EVAL_SKIP) |
261 | return eval_skip_value (exp); | |
262 | type = value_type (arg1); | |
78134374 | 263 | switch (type->code ()) |
0841c79a AB |
264 | { |
265 | case TYPE_CODE_FLT: | |
266 | { | |
267 | double d | |
268 | = fabs (target_float_to_host_double (value_contents (arg1), | |
269 | value_type (arg1))); | |
270 | return value_from_host_double (type, d); | |
271 | } | |
272 | case TYPE_CODE_INT: | |
273 | { | |
274 | LONGEST l = value_as_long (arg1); | |
275 | l = llabs (l); | |
276 | return value_from_longest (type, l); | |
277 | } | |
278 | } | |
279 | error (_("ABS of type %s not supported"), TYPE_SAFE_NAME (type)); | |
280 | ||
b6d03bb2 | 281 | case BINOP_MOD: |
fe1fe7ea | 282 | arg1 = evaluate_subexp (nullptr, exp, pos, noside); |
b6d03bb2 AB |
283 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
284 | if (noside == EVAL_SKIP) | |
285 | return eval_skip_value (exp); | |
286 | type = value_type (arg1); | |
78134374 | 287 | if (type->code () != value_type (arg2)->code ()) |
b6d03bb2 | 288 | error (_("non-matching types for parameters to MOD ()")); |
78134374 | 289 | switch (type->code ()) |
b6d03bb2 AB |
290 | { |
291 | case TYPE_CODE_FLT: | |
292 | { | |
293 | double d1 | |
294 | = target_float_to_host_double (value_contents (arg1), | |
295 | value_type (arg1)); | |
296 | double d2 | |
297 | = target_float_to_host_double (value_contents (arg2), | |
298 | value_type (arg2)); | |
299 | double d3 = fmod (d1, d2); | |
300 | return value_from_host_double (type, d3); | |
301 | } | |
302 | case TYPE_CODE_INT: | |
303 | { | |
304 | LONGEST v1 = value_as_long (arg1); | |
305 | LONGEST v2 = value_as_long (arg2); | |
306 | if (v2 == 0) | |
307 | error (_("calling MOD (N, 0) is undefined")); | |
308 | LONGEST v3 = v1 - (v1 / v2) * v2; | |
309 | return value_from_longest (value_type (arg1), v3); | |
310 | } | |
311 | } | |
312 | error (_("MOD of type %s not supported"), TYPE_SAFE_NAME (type)); | |
313 | ||
314 | case UNOP_FORTRAN_CEILING: | |
315 | { | |
fe1fe7ea | 316 | arg1 = evaluate_subexp (nullptr, exp, pos, noside); |
b6d03bb2 AB |
317 | if (noside == EVAL_SKIP) |
318 | return eval_skip_value (exp); | |
319 | type = value_type (arg1); | |
78134374 | 320 | if (type->code () != TYPE_CODE_FLT) |
b6d03bb2 AB |
321 | error (_("argument to CEILING must be of type float")); |
322 | double val | |
323 | = target_float_to_host_double (value_contents (arg1), | |
324 | value_type (arg1)); | |
325 | val = ceil (val); | |
326 | return value_from_host_double (type, val); | |
327 | } | |
328 | ||
329 | case UNOP_FORTRAN_FLOOR: | |
330 | { | |
fe1fe7ea | 331 | arg1 = evaluate_subexp (nullptr, exp, pos, noside); |
b6d03bb2 AB |
332 | if (noside == EVAL_SKIP) |
333 | return eval_skip_value (exp); | |
334 | type = value_type (arg1); | |
78134374 | 335 | if (type->code () != TYPE_CODE_FLT) |
b6d03bb2 AB |
336 | error (_("argument to FLOOR must be of type float")); |
337 | double val | |
338 | = target_float_to_host_double (value_contents (arg1), | |
339 | value_type (arg1)); | |
340 | val = floor (val); | |
341 | return value_from_host_double (type, val); | |
342 | } | |
343 | ||
344 | case BINOP_FORTRAN_MODULO: | |
345 | { | |
fe1fe7ea | 346 | arg1 = evaluate_subexp (nullptr, exp, pos, noside); |
b6d03bb2 AB |
347 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
348 | if (noside == EVAL_SKIP) | |
349 | return eval_skip_value (exp); | |
350 | type = value_type (arg1); | |
78134374 | 351 | if (type->code () != value_type (arg2)->code ()) |
b6d03bb2 | 352 | error (_("non-matching types for parameters to MODULO ()")); |
dda83cd7 | 353 | /* MODULO(A, P) = A - FLOOR (A / P) * P */ |
78134374 | 354 | switch (type->code ()) |
b6d03bb2 AB |
355 | { |
356 | case TYPE_CODE_INT: | |
357 | { | |
358 | LONGEST a = value_as_long (arg1); | |
359 | LONGEST p = value_as_long (arg2); | |
360 | LONGEST result = a - (a / p) * p; | |
361 | if (result != 0 && (a < 0) != (p < 0)) | |
362 | result += p; | |
363 | return value_from_longest (value_type (arg1), result); | |
364 | } | |
365 | case TYPE_CODE_FLT: | |
366 | { | |
367 | double a | |
368 | = target_float_to_host_double (value_contents (arg1), | |
369 | value_type (arg1)); | |
370 | double p | |
371 | = target_float_to_host_double (value_contents (arg2), | |
372 | value_type (arg2)); | |
373 | double result = fmod (a, p); | |
374 | if (result != 0 && (a < 0.0) != (p < 0.0)) | |
375 | result += p; | |
376 | return value_from_host_double (type, result); | |
377 | } | |
378 | } | |
379 | error (_("MODULO of type %s not supported"), TYPE_SAFE_NAME (type)); | |
380 | } | |
381 | ||
382 | case BINOP_FORTRAN_CMPLX: | |
fe1fe7ea | 383 | arg1 = evaluate_subexp (nullptr, exp, pos, noside); |
b6d03bb2 AB |
384 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
385 | if (noside == EVAL_SKIP) | |
386 | return eval_skip_value (exp); | |
387 | type = builtin_f_type(exp->gdbarch)->builtin_complex_s16; | |
388 | return value_literal_complex (arg1, arg2, type); | |
389 | ||
83228e93 | 390 | case UNOP_FORTRAN_KIND: |
4d00f5d8 AB |
391 | arg1 = evaluate_subexp (NULL, exp, pos, EVAL_AVOID_SIDE_EFFECTS); |
392 | type = value_type (arg1); | |
393 | ||
78134374 | 394 | switch (type->code ()) |
dda83cd7 SM |
395 | { |
396 | case TYPE_CODE_STRUCT: | |
397 | case TYPE_CODE_UNION: | |
398 | case TYPE_CODE_MODULE: | |
399 | case TYPE_CODE_FUNC: | |
400 | error (_("argument to kind must be an intrinsic type")); | |
401 | } | |
4d00f5d8 AB |
402 | |
403 | if (!TYPE_TARGET_TYPE (type)) | |
dda83cd7 | 404 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, |
4d00f5d8 AB |
405 | TYPE_LENGTH (type)); |
406 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, | |
78134374 | 407 | TYPE_LENGTH (TYPE_TARGET_TYPE (type))); |
6d816919 AB |
408 | |
409 | ||
410 | case OP_F77_UNDETERMINED_ARGLIST: | |
411 | /* Remember that in F77, functions, substring ops and array subscript | |
dda83cd7 SM |
412 | operations cannot be disambiguated at parse time. We have made |
413 | all array subscript operations, substring operations as well as | |
414 | function calls come here and we now have to discover what the heck | |
415 | this thing actually was. If it is a function, we process just as | |
416 | if we got an OP_FUNCALL. */ | |
6d816919 AB |
417 | int nargs = longest_to_int (exp->elts[pc + 1].longconst); |
418 | (*pos) += 2; | |
419 | ||
420 | /* First determine the type code we are dealing with. */ | |
421 | arg1 = evaluate_subexp (nullptr, exp, pos, noside); | |
422 | type = check_typedef (value_type (arg1)); | |
423 | enum type_code code = type->code (); | |
424 | ||
425 | if (code == TYPE_CODE_PTR) | |
426 | { | |
427 | /* Fortran always passes variable to subroutines as pointer. | |
428 | So we need to look into its target type to see if it is | |
429 | array, string or function. If it is, we need to switch | |
430 | to the target value the original one points to. */ | |
431 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
432 | ||
433 | if (target_type->code () == TYPE_CODE_ARRAY | |
434 | || target_type->code () == TYPE_CODE_STRING | |
435 | || target_type->code () == TYPE_CODE_FUNC) | |
436 | { | |
437 | arg1 = value_ind (arg1); | |
438 | type = check_typedef (value_type (arg1)); | |
439 | code = type->code (); | |
440 | } | |
441 | } | |
442 | ||
443 | switch (code) | |
444 | { | |
445 | case TYPE_CODE_ARRAY: | |
446 | case TYPE_CODE_STRING: | |
447 | return fortran_value_subarray (arg1, exp, pos, nargs, noside); | |
448 | ||
449 | case TYPE_CODE_PTR: | |
450 | case TYPE_CODE_FUNC: | |
451 | case TYPE_CODE_INTERNAL_FUNCTION: | |
452 | { | |
453 | /* It's a function call. Allocate arg vector, including | |
454 | space for the function to be called in argvec[0] and a | |
455 | termination NULL. */ | |
456 | struct value **argvec = (struct value **) | |
457 | alloca (sizeof (struct value *) * (nargs + 2)); | |
458 | argvec[0] = arg1; | |
459 | int tem = 1; | |
460 | for (; tem <= nargs; tem++) | |
461 | { | |
462 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
463 | /* Arguments in Fortran are passed by address. Coerce the | |
464 | arguments here rather than in value_arg_coerce as | |
465 | otherwise the call to malloc to place the non-lvalue | |
466 | parameters in target memory is hit by this Fortran | |
467 | specific logic. This results in malloc being called | |
468 | with a pointer to an integer followed by an attempt to | |
469 | malloc the arguments to malloc in target memory. | |
470 | Infinite recursion ensues. */ | |
471 | if (code == TYPE_CODE_PTR || code == TYPE_CODE_FUNC) | |
472 | { | |
473 | bool is_artificial | |
474 | = TYPE_FIELD_ARTIFICIAL (value_type (arg1), tem - 1); | |
475 | argvec[tem] = fortran_argument_convert (argvec[tem], | |
476 | is_artificial); | |
477 | } | |
478 | } | |
479 | argvec[tem] = 0; /* signal end of arglist */ | |
480 | if (noside == EVAL_SKIP) | |
481 | return eval_skip_value (exp); | |
482 | return evaluate_subexp_do_call (exp, noside, nargs, argvec, NULL, | |
483 | expect_type); | |
484 | } | |
485 | ||
486 | default: | |
487 | error (_("Cannot perform substring on this type")); | |
488 | } | |
4d00f5d8 AB |
489 | } |
490 | ||
491 | /* Should be unreachable. */ | |
492 | return nullptr; | |
9dad4a58 AB |
493 | } |
494 | ||
83228e93 AB |
495 | /* Special expression lengths for Fortran. */ |
496 | ||
497 | static void | |
498 | operator_length_f (const struct expression *exp, int pc, int *oplenp, | |
499 | int *argsp) | |
500 | { | |
501 | int oplen = 1; | |
502 | int args = 0; | |
503 | ||
504 | switch (exp->elts[pc - 1].opcode) | |
505 | { | |
506 | default: | |
507 | operator_length_standard (exp, pc, oplenp, argsp); | |
508 | return; | |
509 | ||
510 | case UNOP_FORTRAN_KIND: | |
b6d03bb2 AB |
511 | case UNOP_FORTRAN_FLOOR: |
512 | case UNOP_FORTRAN_CEILING: | |
83228e93 AB |
513 | oplen = 1; |
514 | args = 1; | |
515 | break; | |
b6d03bb2 AB |
516 | |
517 | case BINOP_FORTRAN_CMPLX: | |
518 | case BINOP_FORTRAN_MODULO: | |
519 | oplen = 1; | |
520 | args = 2; | |
521 | break; | |
6d816919 AB |
522 | |
523 | case OP_F77_UNDETERMINED_ARGLIST: | |
524 | oplen = 3; | |
525 | args = 1 + longest_to_int (exp->elts[pc - 2].longconst); | |
526 | break; | |
83228e93 AB |
527 | } |
528 | ||
529 | *oplenp = oplen; | |
530 | *argsp = args; | |
531 | } | |
532 | ||
b6d03bb2 AB |
533 | /* Helper for PRINT_SUBEXP_F. Arguments are as for PRINT_SUBEXP_F, except |
534 | the extra argument NAME which is the text that should be printed as the | |
535 | name of this operation. */ | |
536 | ||
537 | static void | |
538 | print_unop_subexp_f (struct expression *exp, int *pos, | |
539 | struct ui_file *stream, enum precedence prec, | |
540 | const char *name) | |
541 | { | |
542 | (*pos)++; | |
543 | fprintf_filtered (stream, "%s(", name); | |
544 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
545 | fputs_filtered (")", stream); | |
546 | } | |
547 | ||
548 | /* Helper for PRINT_SUBEXP_F. Arguments are as for PRINT_SUBEXP_F, except | |
549 | the extra argument NAME which is the text that should be printed as the | |
550 | name of this operation. */ | |
551 | ||
552 | static void | |
553 | print_binop_subexp_f (struct expression *exp, int *pos, | |
554 | struct ui_file *stream, enum precedence prec, | |
555 | const char *name) | |
556 | { | |
557 | (*pos)++; | |
558 | fprintf_filtered (stream, "%s(", name); | |
559 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
560 | fputs_filtered (",", stream); | |
561 | print_subexp (exp, pos, stream, PREC_SUFFIX); | |
562 | fputs_filtered (")", stream); | |
563 | } | |
564 | ||
83228e93 AB |
565 | /* Special expression printing for Fortran. */ |
566 | ||
567 | static void | |
568 | print_subexp_f (struct expression *exp, int *pos, | |
569 | struct ui_file *stream, enum precedence prec) | |
570 | { | |
571 | int pc = *pos; | |
572 | enum exp_opcode op = exp->elts[pc].opcode; | |
573 | ||
574 | switch (op) | |
575 | { | |
576 | default: | |
577 | print_subexp_standard (exp, pos, stream, prec); | |
578 | return; | |
579 | ||
580 | case UNOP_FORTRAN_KIND: | |
b6d03bb2 AB |
581 | print_unop_subexp_f (exp, pos, stream, prec, "KIND"); |
582 | return; | |
583 | ||
584 | case UNOP_FORTRAN_FLOOR: | |
585 | print_unop_subexp_f (exp, pos, stream, prec, "FLOOR"); | |
586 | return; | |
587 | ||
588 | case UNOP_FORTRAN_CEILING: | |
589 | print_unop_subexp_f (exp, pos, stream, prec, "CEILING"); | |
590 | return; | |
591 | ||
592 | case BINOP_FORTRAN_CMPLX: | |
593 | print_binop_subexp_f (exp, pos, stream, prec, "CMPLX"); | |
594 | return; | |
595 | ||
596 | case BINOP_FORTRAN_MODULO: | |
597 | print_binop_subexp_f (exp, pos, stream, prec, "MODULO"); | |
83228e93 | 598 | return; |
6d816919 AB |
599 | |
600 | case OP_F77_UNDETERMINED_ARGLIST: | |
86775fab | 601 | (*pos)++; |
6d816919 AB |
602 | print_subexp_funcall (exp, pos, stream); |
603 | return; | |
83228e93 AB |
604 | } |
605 | } | |
606 | ||
607 | /* Special expression names for Fortran. */ | |
608 | ||
609 | static const char * | |
610 | op_name_f (enum exp_opcode opcode) | |
611 | { | |
612 | switch (opcode) | |
613 | { | |
614 | default: | |
615 | return op_name_standard (opcode); | |
616 | ||
617 | #define OP(name) \ | |
618 | case name: \ | |
619 | return #name ; | |
620 | #include "fortran-operator.def" | |
621 | #undef OP | |
622 | } | |
623 | } | |
624 | ||
625 | /* Special expression dumping for Fortran. */ | |
626 | ||
627 | static int | |
628 | dump_subexp_body_f (struct expression *exp, | |
629 | struct ui_file *stream, int elt) | |
630 | { | |
631 | int opcode = exp->elts[elt].opcode; | |
632 | int oplen, nargs, i; | |
633 | ||
634 | switch (opcode) | |
635 | { | |
636 | default: | |
637 | return dump_subexp_body_standard (exp, stream, elt); | |
638 | ||
639 | case UNOP_FORTRAN_KIND: | |
b6d03bb2 AB |
640 | case UNOP_FORTRAN_FLOOR: |
641 | case UNOP_FORTRAN_CEILING: | |
642 | case BINOP_FORTRAN_CMPLX: | |
643 | case BINOP_FORTRAN_MODULO: | |
83228e93 AB |
644 | operator_length_f (exp, (elt + 1), &oplen, &nargs); |
645 | break; | |
6d816919 AB |
646 | |
647 | case OP_F77_UNDETERMINED_ARGLIST: | |
86775fab | 648 | return dump_subexp_body_funcall (exp, stream, elt + 1); |
83228e93 AB |
649 | } |
650 | ||
651 | elt += oplen; | |
652 | for (i = 0; i < nargs; i += 1) | |
653 | elt = dump_subexp (exp, stream, elt); | |
654 | ||
655 | return elt; | |
656 | } | |
657 | ||
658 | /* Special expression checking for Fortran. */ | |
659 | ||
660 | static int | |
661 | operator_check_f (struct expression *exp, int pos, | |
662 | int (*objfile_func) (struct objfile *objfile, | |
663 | void *data), | |
664 | void *data) | |
665 | { | |
666 | const union exp_element *const elts = exp->elts; | |
667 | ||
668 | switch (elts[pos].opcode) | |
669 | { | |
670 | case UNOP_FORTRAN_KIND: | |
b6d03bb2 AB |
671 | case UNOP_FORTRAN_FLOOR: |
672 | case UNOP_FORTRAN_CEILING: | |
673 | case BINOP_FORTRAN_CMPLX: | |
674 | case BINOP_FORTRAN_MODULO: | |
83228e93 AB |
675 | /* Any references to objfiles are held in the arguments to this |
676 | expression, not within the expression itself, so no additional | |
677 | checking is required here, the outer expression iteration code | |
678 | will take care of checking each argument. */ | |
679 | break; | |
680 | ||
681 | default: | |
682 | return operator_check_standard (exp, pos, objfile_func, data); | |
683 | } | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
9dad4a58 | 688 | /* Expression processing for Fortran. */ |
1a0ea399 | 689 | const struct exp_descriptor f_language::exp_descriptor_tab = |
9dad4a58 | 690 | { |
83228e93 AB |
691 | print_subexp_f, |
692 | operator_length_f, | |
693 | operator_check_f, | |
694 | op_name_f, | |
695 | dump_subexp_body_f, | |
9dad4a58 AB |
696 | evaluate_subexp_f |
697 | }; | |
698 | ||
1a0ea399 | 699 | /* See language.h. */ |
0874fd07 | 700 | |
1a0ea399 AB |
701 | void |
702 | f_language::language_arch_info (struct gdbarch *gdbarch, | |
703 | struct language_arch_info *lai) const | |
0874fd07 | 704 | { |
1a0ea399 AB |
705 | const struct builtin_f_type *builtin = builtin_f_type (gdbarch); |
706 | ||
7bea47f0 AB |
707 | /* Helper function to allow shorter lines below. */ |
708 | auto add = [&] (struct type * t) | |
709 | { | |
710 | lai->add_primitive_type (t); | |
711 | }; | |
712 | ||
713 | add (builtin->builtin_character); | |
714 | add (builtin->builtin_logical); | |
715 | add (builtin->builtin_logical_s1); | |
716 | add (builtin->builtin_logical_s2); | |
717 | add (builtin->builtin_logical_s8); | |
718 | add (builtin->builtin_real); | |
719 | add (builtin->builtin_real_s8); | |
720 | add (builtin->builtin_real_s16); | |
721 | add (builtin->builtin_complex_s8); | |
722 | add (builtin->builtin_complex_s16); | |
723 | add (builtin->builtin_void); | |
724 | ||
725 | lai->set_string_char_type (builtin->builtin_character); | |
726 | lai->set_bool_type (builtin->builtin_logical_s2, "logical"); | |
1a0ea399 | 727 | } |
5aba6ebe | 728 | |
1a0ea399 | 729 | /* See language.h. */ |
5aba6ebe | 730 | |
1a0ea399 AB |
731 | unsigned int |
732 | f_language::search_name_hash (const char *name) const | |
733 | { | |
734 | return cp_search_name_hash (name); | |
735 | } | |
b7c6e27d | 736 | |
1a0ea399 | 737 | /* See language.h. */ |
b7c6e27d | 738 | |
1a0ea399 AB |
739 | struct block_symbol |
740 | f_language::lookup_symbol_nonlocal (const char *name, | |
741 | const struct block *block, | |
742 | const domain_enum domain) const | |
743 | { | |
744 | return cp_lookup_symbol_nonlocal (this, name, block, domain); | |
745 | } | |
c9debfb9 | 746 | |
1a0ea399 | 747 | /* See language.h. */ |
c9debfb9 | 748 | |
1a0ea399 AB |
749 | symbol_name_matcher_ftype * |
750 | f_language::get_symbol_name_matcher_inner | |
751 | (const lookup_name_info &lookup_name) const | |
752 | { | |
753 | return cp_get_symbol_name_matcher (lookup_name); | |
754 | } | |
0874fd07 AB |
755 | |
756 | /* Single instance of the Fortran language class. */ | |
757 | ||
758 | static f_language f_language_defn; | |
759 | ||
54ef06c7 UW |
760 | static void * |
761 | build_fortran_types (struct gdbarch *gdbarch) | |
c906108c | 762 | { |
54ef06c7 UW |
763 | struct builtin_f_type *builtin_f_type |
764 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type); | |
765 | ||
e9bb382b | 766 | builtin_f_type->builtin_void |
bbe75b9d | 767 | = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
e9bb382b UW |
768 | |
769 | builtin_f_type->builtin_character | |
4a270568 | 770 | = arch_type (gdbarch, TYPE_CODE_CHAR, TARGET_CHAR_BIT, "character"); |
e9bb382b UW |
771 | |
772 | builtin_f_type->builtin_logical_s1 | |
773 | = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1"); | |
774 | ||
775 | builtin_f_type->builtin_integer_s2 | |
776 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0, | |
777 | "integer*2"); | |
778 | ||
067630bd AB |
779 | builtin_f_type->builtin_integer_s8 |
780 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), 0, | |
781 | "integer*8"); | |
782 | ||
e9bb382b UW |
783 | builtin_f_type->builtin_logical_s2 |
784 | = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1, | |
785 | "logical*2"); | |
786 | ||
ce4b0682 SDJ |
787 | builtin_f_type->builtin_logical_s8 |
788 | = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1, | |
789 | "logical*8"); | |
790 | ||
e9bb382b UW |
791 | builtin_f_type->builtin_integer |
792 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0, | |
793 | "integer"); | |
794 | ||
795 | builtin_f_type->builtin_logical | |
796 | = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1, | |
797 | "logical*4"); | |
798 | ||
799 | builtin_f_type->builtin_real | |
800 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), | |
49f190bc | 801 | "real", gdbarch_float_format (gdbarch)); |
e9bb382b UW |
802 | builtin_f_type->builtin_real_s8 |
803 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), | |
49f190bc | 804 | "real*8", gdbarch_double_format (gdbarch)); |
34d11c68 | 805 | auto fmt = gdbarch_floatformat_for_type (gdbarch, "real(kind=16)", 128); |
dc42e902 AB |
806 | if (fmt != nullptr) |
807 | builtin_f_type->builtin_real_s16 | |
808 | = arch_float_type (gdbarch, 128, "real*16", fmt); | |
809 | else if (gdbarch_long_double_bit (gdbarch) == 128) | |
810 | builtin_f_type->builtin_real_s16 | |
811 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), | |
812 | "real*16", gdbarch_long_double_format (gdbarch)); | |
813 | else | |
814 | builtin_f_type->builtin_real_s16 | |
815 | = arch_type (gdbarch, TYPE_CODE_ERROR, 128, "real*16"); | |
e9bb382b UW |
816 | |
817 | builtin_f_type->builtin_complex_s8 | |
5b930b45 | 818 | = init_complex_type ("complex*8", builtin_f_type->builtin_real); |
e9bb382b | 819 | builtin_f_type->builtin_complex_s16 |
5b930b45 | 820 | = init_complex_type ("complex*16", builtin_f_type->builtin_real_s8); |
0830d301 | 821 | |
78134374 | 822 | if (builtin_f_type->builtin_real_s16->code () == TYPE_CODE_ERROR) |
0830d301 TT |
823 | builtin_f_type->builtin_complex_s32 |
824 | = arch_type (gdbarch, TYPE_CODE_ERROR, 256, "complex*32"); | |
825 | else | |
826 | builtin_f_type->builtin_complex_s32 | |
827 | = init_complex_type ("complex*32", builtin_f_type->builtin_real_s16); | |
54ef06c7 UW |
828 | |
829 | return builtin_f_type; | |
830 | } | |
831 | ||
832 | static struct gdbarch_data *f_type_data; | |
833 | ||
834 | const struct builtin_f_type * | |
835 | builtin_f_type (struct gdbarch *gdbarch) | |
836 | { | |
9a3c8263 | 837 | return (const struct builtin_f_type *) gdbarch_data (gdbarch, f_type_data); |
4e845cd3 MS |
838 | } |
839 | ||
6c265988 | 840 | void _initialize_f_language (); |
4e845cd3 | 841 | void |
6c265988 | 842 | _initialize_f_language () |
4e845cd3 | 843 | { |
54ef06c7 | 844 | f_type_data = gdbarch_data_register_post_init (build_fortran_types); |
c906108c | 845 | } |
aa3cfbda RB |
846 | |
847 | /* See f-lang.h. */ | |
848 | ||
849 | struct value * | |
850 | fortran_argument_convert (struct value *value, bool is_artificial) | |
851 | { | |
852 | if (!is_artificial) | |
853 | { | |
854 | /* If the value is not in the inferior e.g. registers values, | |
855 | convenience variables and user input. */ | |
856 | if (VALUE_LVAL (value) != lval_memory) | |
857 | { | |
858 | struct type *type = value_type (value); | |
859 | const int length = TYPE_LENGTH (type); | |
860 | const CORE_ADDR addr | |
861 | = value_as_long (value_allocate_space_in_inferior (length)); | |
862 | write_memory (addr, value_contents (value), length); | |
863 | struct value *val | |
864 | = value_from_contents_and_address (type, value_contents (value), | |
865 | addr); | |
866 | return value_addr (val); | |
867 | } | |
868 | else | |
869 | return value_addr (value); /* Program variables, e.g. arrays. */ | |
870 | } | |
871 | return value; | |
872 | } | |
873 | ||
874 | /* See f-lang.h. */ | |
875 | ||
876 | struct type * | |
877 | fortran_preserve_arg_pointer (struct value *arg, struct type *type) | |
878 | { | |
78134374 | 879 | if (value_type (arg)->code () == TYPE_CODE_PTR) |
aa3cfbda RB |
880 | return value_type (arg); |
881 | return type; | |
882 | } |