1 /* Fortran language support routines for GDB, the GNU debugger.
3 Copyright (C) 1993-2019 Free Software Foundation, Inc.
5 Contributed by Motorola. Adapted from the C parser by Farooq Butt
6 (fmbutt@engage.sps.mot.com).
8 This file is part of GDB.
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.
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.
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/>. */
26 #include "expression.h"
27 #include "parser-defs.h"
34 #include "cp-support.h"
37 #include "target-float.h"
43 static void f_printchar (int c
, struct type
*type
, struct ui_file
* stream
);
44 static void f_emit_char (int c
, struct type
*type
,
45 struct ui_file
* stream
, int quoter
);
47 /* Return the encoding that should be used for the character type
51 f_get_encoding (struct type
*type
)
55 switch (TYPE_LENGTH (type
))
58 encoding
= target_charset (get_type_arch (type
));
61 if (gdbarch_byte_order (get_type_arch (type
)) == BFD_ENDIAN_BIG
)
62 encoding
= "UTF-32BE";
64 encoding
= "UTF-32LE";
68 error (_("unrecognized character type"));
74 /* Print the character C on STREAM as part of the contents of a literal
75 string whose delimiter is QUOTER. Note that that format for printing
76 characters and strings is language specific.
77 FIXME: This is a copy of the same function from c-exp.y. It should
78 be replaced with a true F77 version. */
81 f_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
83 const char *encoding
= f_get_encoding (type
);
85 generic_emit_char (c
, type
, stream
, quoter
, encoding
);
88 /* Implementation of la_printchar. */
91 f_printchar (int c
, struct type
*type
, struct ui_file
*stream
)
93 fputs_filtered ("'", stream
);
94 LA_EMIT_CHAR (c
, type
, stream
, '\'');
95 fputs_filtered ("'", stream
);
98 /* Print the character string STRING, printing at most LENGTH characters.
99 Printing stops early if the number hits print_max; repeat counts
100 are printed as appropriate. Print ellipses at the end if we
101 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
102 FIXME: This is a copy of the same function from c-exp.y. It should
103 be replaced with a true F77 version. */
106 f_printstr (struct ui_file
*stream
, struct type
*type
, const gdb_byte
*string
,
107 unsigned int length
, const char *encoding
, int force_ellipses
,
108 const struct value_print_options
*options
)
110 const char *type_encoding
= f_get_encoding (type
);
112 if (TYPE_LENGTH (type
) == 4)
113 fputs_filtered ("4_", stream
);
115 if (!encoding
|| !*encoding
)
116 encoding
= type_encoding
;
118 generic_printstr (stream
, type
, string
, length
, encoding
,
119 force_ellipses
, '\'', 0, options
);
123 /* Table of operators and their precedences for printing expressions. */
125 static const struct op_print f_op_print_tab
[] =
127 {"+", BINOP_ADD
, PREC_ADD
, 0},
128 {"+", UNOP_PLUS
, PREC_PREFIX
, 0},
129 {"-", BINOP_SUB
, PREC_ADD
, 0},
130 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
131 {"*", BINOP_MUL
, PREC_MUL
, 0},
132 {"/", BINOP_DIV
, PREC_MUL
, 0},
133 {"DIV", BINOP_INTDIV
, PREC_MUL
, 0},
134 {"MOD", BINOP_REM
, PREC_MUL
, 0},
135 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
136 {".OR.", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
137 {".AND.", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
138 {".NOT.", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
139 {".EQ.", BINOP_EQUAL
, PREC_EQUAL
, 0},
140 {".NE.", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
141 {".LE.", BINOP_LEQ
, PREC_ORDER
, 0},
142 {".GE.", BINOP_GEQ
, PREC_ORDER
, 0},
143 {".GT.", BINOP_GTR
, PREC_ORDER
, 0},
144 {".LT.", BINOP_LESS
, PREC_ORDER
, 0},
145 {"**", UNOP_IND
, PREC_PREFIX
, 0},
146 {"@", BINOP_REPEAT
, PREC_REPEAT
, 0},
147 {NULL
, OP_NULL
, PREC_REPEAT
, 0}
150 enum f_primitive_types
{
151 f_primitive_type_character
,
152 f_primitive_type_logical
,
153 f_primitive_type_logical_s1
,
154 f_primitive_type_logical_s2
,
155 f_primitive_type_logical_s8
,
156 f_primitive_type_integer
,
157 f_primitive_type_integer_s2
,
158 f_primitive_type_real
,
159 f_primitive_type_real_s8
,
160 f_primitive_type_real_s16
,
161 f_primitive_type_complex_s8
,
162 f_primitive_type_complex_s16
,
163 f_primitive_type_void
,
168 f_language_arch_info (struct gdbarch
*gdbarch
,
169 struct language_arch_info
*lai
)
171 const struct builtin_f_type
*builtin
= builtin_f_type (gdbarch
);
173 lai
->string_char_type
= builtin
->builtin_character
;
174 lai
->primitive_type_vector
175 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_f_primitive_types
+ 1,
178 lai
->primitive_type_vector
[f_primitive_type_character
]
179 = builtin
->builtin_character
;
180 lai
->primitive_type_vector
[f_primitive_type_logical
]
181 = builtin
->builtin_logical
;
182 lai
->primitive_type_vector
[f_primitive_type_logical_s1
]
183 = builtin
->builtin_logical_s1
;
184 lai
->primitive_type_vector
[f_primitive_type_logical_s2
]
185 = builtin
->builtin_logical_s2
;
186 lai
->primitive_type_vector
[f_primitive_type_logical_s8
]
187 = builtin
->builtin_logical_s8
;
188 lai
->primitive_type_vector
[f_primitive_type_real
]
189 = builtin
->builtin_real
;
190 lai
->primitive_type_vector
[f_primitive_type_real_s8
]
191 = builtin
->builtin_real_s8
;
192 lai
->primitive_type_vector
[f_primitive_type_real_s16
]
193 = builtin
->builtin_real_s16
;
194 lai
->primitive_type_vector
[f_primitive_type_complex_s8
]
195 = builtin
->builtin_complex_s8
;
196 lai
->primitive_type_vector
[f_primitive_type_complex_s16
]
197 = builtin
->builtin_complex_s16
;
198 lai
->primitive_type_vector
[f_primitive_type_void
]
199 = builtin
->builtin_void
;
201 lai
->bool_type_symbol
= "logical";
202 lai
->bool_type_default
= builtin
->builtin_logical_s2
;
205 /* Remove the modules separator :: from the default break list. */
208 f_word_break_characters (void)
216 retval
= xstrdup (default_word_break_characters ());
217 s
= strchr (retval
, ':');
220 char *last_char
= &s
[strlen (s
) - 1];
229 /* Consider the modules separator :: as a valid symbol name character
233 f_collect_symbol_completion_matches (completion_tracker
&tracker
,
234 complete_symbol_mode mode
,
235 symbol_name_match_type compare_name
,
236 const char *text
, const char *word
,
239 default_collect_symbol_completion_matches_break_on (tracker
, mode
,
241 text
, word
, ":", code
);
244 /* Special expression evaluation cases for Fortran. */
246 evaluate_subexp_f (struct type
*expect_type
, struct expression
*exp
,
247 int *pos
, enum noside noside
)
249 struct value
*arg1
= NULL
;
256 op
= exp
->elts
[pc
].opcode
;
262 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
265 arg1
= evaluate_subexp (NULL_TYPE
, exp
, pos
, noside
);
266 if (noside
== EVAL_SKIP
)
267 return eval_skip_value (exp
);
268 type
= value_type (arg1
);
269 switch (TYPE_CODE (type
))
274 = fabs (target_float_to_host_double (value_contents (arg1
),
276 return value_from_host_double (type
, d
);
280 LONGEST l
= value_as_long (arg1
);
282 return value_from_longest (type
, l
);
285 error (_("ABS of type %s not supported"), TYPE_SAFE_NAME (type
));
288 arg1
= evaluate_subexp (NULL
, exp
, pos
, EVAL_AVOID_SIDE_EFFECTS
);
289 type
= value_type (arg1
);
291 switch (TYPE_CODE (type
))
293 case TYPE_CODE_STRUCT
:
294 case TYPE_CODE_UNION
:
295 case TYPE_CODE_MODULE
:
297 error (_("argument to kind must be an intrinsic type"));
300 if (!TYPE_TARGET_TYPE (type
))
301 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
,
303 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
,
304 TYPE_LENGTH (TYPE_TARGET_TYPE(type
)));
307 /* Should be unreachable. */
311 /* Return true if TYPE is a string. */
314 f_is_string_type_p (struct type
*type
)
316 type
= check_typedef (type
);
317 return (TYPE_CODE (type
) == TYPE_CODE_STRING
318 || (TYPE_CODE (type
) == TYPE_CODE_ARRAY
319 && TYPE_CODE (TYPE_TARGET_TYPE (type
)) == TYPE_CODE_CHAR
));
322 static const char *f_extensions
[] =
324 ".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP",
325 ".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08",
329 /* Expression processing for Fortran. */
330 static const struct exp_descriptor exp_descriptor_f
=
332 print_subexp_standard
,
333 operator_length_standard
,
334 operator_check_standard
,
336 dump_subexp_body_standard
,
340 extern const struct language_defn f_language_defn
=
351 f_parse
, /* parser */
353 f_printchar
, /* Print character constant */
354 f_printstr
, /* function to print string constant */
355 f_emit_char
, /* Function to print a single character */
356 f_print_type
, /* Print a type using appropriate syntax */
357 default_print_typedef
, /* Print a typedef using appropriate syntax */
358 f_val_print
, /* Print a value using appropriate syntax */
359 c_value_print
, /* FIXME */
360 default_read_var_value
, /* la_read_var_value */
361 NULL
, /* Language specific skip_trampoline */
362 NULL
, /* name_of_this */
363 false, /* la_store_sym_names_in_linkage_form_p */
364 cp_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
365 basic_lookup_transparent_type
,/* lookup_transparent_type */
367 /* We could support demangling here to provide module namespaces
368 also for inferiors with only minimal symbol table (ELF symbols).
369 Just the mangling standard is not standardized across compilers
370 and there is no DW_AT_producer available for inferiors with only
371 the ELF symbols to check the mangling kind. */
372 NULL
, /* Language specific symbol demangler */
374 NULL
, /* Language specific
375 class_name_from_physname */
376 f_op_print_tab
, /* expression operators for printing */
377 0, /* arrays are first-class (not c-style) */
378 1, /* String lower bound */
379 f_word_break_characters
,
380 f_collect_symbol_completion_matches
,
381 f_language_arch_info
,
382 default_print_array_index
,
383 default_pass_by_reference
,
385 c_watch_location_expression
,
386 NULL
, /* la_get_symbol_name_matcher */
387 iterate_over_symbols
,
388 default_search_name_hash
,
393 "(...)" /* la_struct_too_deep_ellipsis */
397 build_fortran_types (struct gdbarch
*gdbarch
)
399 struct builtin_f_type
*builtin_f_type
400 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_f_type
);
402 builtin_f_type
->builtin_void
403 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "VOID");
405 builtin_f_type
->builtin_character
406 = arch_type (gdbarch
, TYPE_CODE_CHAR
, TARGET_CHAR_BIT
, "character");
408 builtin_f_type
->builtin_logical_s1
409 = arch_boolean_type (gdbarch
, TARGET_CHAR_BIT
, 1, "logical*1");
411 builtin_f_type
->builtin_integer_s2
412 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
), 0,
415 builtin_f_type
->builtin_integer_s8
416 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
), 0,
419 builtin_f_type
->builtin_logical_s2
420 = arch_boolean_type (gdbarch
, gdbarch_short_bit (gdbarch
), 1,
423 builtin_f_type
->builtin_logical_s8
424 = arch_boolean_type (gdbarch
, gdbarch_long_long_bit (gdbarch
), 1,
427 builtin_f_type
->builtin_integer
428 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
), 0,
431 builtin_f_type
->builtin_logical
432 = arch_boolean_type (gdbarch
, gdbarch_int_bit (gdbarch
), 1,
435 builtin_f_type
->builtin_real
436 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
437 "real", gdbarch_float_format (gdbarch
));
438 builtin_f_type
->builtin_real_s8
439 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
440 "real*8", gdbarch_double_format (gdbarch
));
441 builtin_f_type
->builtin_real_s16
442 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
443 "real*16", gdbarch_long_double_format (gdbarch
));
445 builtin_f_type
->builtin_complex_s8
446 = arch_complex_type (gdbarch
, "complex*8",
447 builtin_f_type
->builtin_real
);
448 builtin_f_type
->builtin_complex_s16
449 = arch_complex_type (gdbarch
, "complex*16",
450 builtin_f_type
->builtin_real_s8
);
451 builtin_f_type
->builtin_complex_s32
452 = arch_complex_type (gdbarch
, "complex*32",
453 builtin_f_type
->builtin_real_s16
);
455 return builtin_f_type
;
458 static struct gdbarch_data
*f_type_data
;
460 const struct builtin_f_type
*
461 builtin_f_type (struct gdbarch
*gdbarch
)
463 return (const struct builtin_f_type
*) gdbarch_data (gdbarch
, f_type_data
);
467 _initialize_f_language (void)
469 f_type_data
= gdbarch_data_register_post_init (build_fortran_types
);
475 fortran_argument_convert (struct value
*value
, bool is_artificial
)
479 /* If the value is not in the inferior e.g. registers values,
480 convenience variables and user input. */
481 if (VALUE_LVAL (value
) != lval_memory
)
483 struct type
*type
= value_type (value
);
484 const int length
= TYPE_LENGTH (type
);
486 = value_as_long (value_allocate_space_in_inferior (length
));
487 write_memory (addr
, value_contents (value
), length
);
489 = value_from_contents_and_address (type
, value_contents (value
),
491 return value_addr (val
);
494 return value_addr (value
); /* Program variables, e.g. arrays. */
502 fortran_preserve_arg_pointer (struct value
*arg
, struct type
*type
)
504 if (TYPE_CODE (value_type (arg
)) == TYPE_CODE_PTR
)
505 return value_type (arg
);