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 /* Create and return a value object of TYPE containing the value D. The
245 TYPE must be of TYPE_CODE_FLT, and must be large enough to hold D once
246 it is converted to target format. */
248 static struct value
*
249 value_from_host_double (struct type
*type
, double d
)
251 struct value
*value
= allocate_value (type
);
252 gdb_assert (TYPE_CODE (type
) == TYPE_CODE_FLT
);
253 target_float_from_host_double (value_contents_raw (value
),
254 value_type (value
), d
);
258 /* Special expression evaluation cases for Fortran. */
260 evaluate_subexp_f (struct type
*expect_type
, struct expression
*exp
,
261 int *pos
, enum noside noside
)
263 struct value
*arg1
= NULL
;
270 op
= exp
->elts
[pc
].opcode
;
276 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
279 arg1
= evaluate_subexp (NULL_TYPE
, exp
, pos
, noside
);
280 if (noside
== EVAL_SKIP
)
281 return eval_skip_value (exp
);
282 type
= value_type (arg1
);
283 switch (TYPE_CODE (type
))
288 = fabs (target_float_to_host_double (value_contents (arg1
),
290 return value_from_host_double (type
, d
);
294 LONGEST l
= value_as_long (arg1
);
296 return value_from_longest (type
, l
);
299 error (_("ABS of type %s not supported"), TYPE_SAFE_NAME (type
));
302 arg1
= evaluate_subexp (NULL
, exp
, pos
, EVAL_AVOID_SIDE_EFFECTS
);
303 type
= value_type (arg1
);
305 switch (TYPE_CODE (type
))
307 case TYPE_CODE_STRUCT
:
308 case TYPE_CODE_UNION
:
309 case TYPE_CODE_MODULE
:
311 error (_("argument to kind must be an intrinsic type"));
314 if (!TYPE_TARGET_TYPE (type
))
315 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
,
317 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
,
318 TYPE_LENGTH (TYPE_TARGET_TYPE(type
)));
321 /* Should be unreachable. */
325 static const char *f_extensions
[] =
327 ".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP",
328 ".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08",
332 /* Expression processing for Fortran. */
333 static const struct exp_descriptor exp_descriptor_f
=
335 print_subexp_standard
,
336 operator_length_standard
,
337 operator_check_standard
,
339 dump_subexp_body_standard
,
343 extern const struct language_defn f_language_defn
=
354 f_parse
, /* parser */
356 f_printchar
, /* Print character constant */
357 f_printstr
, /* function to print string constant */
358 f_emit_char
, /* Function to print a single character */
359 f_print_type
, /* Print a type using appropriate syntax */
360 default_print_typedef
, /* Print a typedef using appropriate syntax */
361 f_val_print
, /* Print a value using appropriate syntax */
362 c_value_print
, /* FIXME */
363 default_read_var_value
, /* la_read_var_value */
364 NULL
, /* Language specific skip_trampoline */
365 NULL
, /* name_of_this */
366 false, /* la_store_sym_names_in_linkage_form_p */
367 cp_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
368 basic_lookup_transparent_type
,/* lookup_transparent_type */
370 /* We could support demangling here to provide module namespaces
371 also for inferiors with only minimal symbol table (ELF symbols).
372 Just the mangling standard is not standardized across compilers
373 and there is no DW_AT_producer available for inferiors with only
374 the ELF symbols to check the mangling kind. */
375 NULL
, /* Language specific symbol demangler */
377 NULL
, /* Language specific
378 class_name_from_physname */
379 f_op_print_tab
, /* expression operators for printing */
380 0, /* arrays are first-class (not c-style) */
381 1, /* String lower bound */
382 f_word_break_characters
,
383 f_collect_symbol_completion_matches
,
384 f_language_arch_info
,
385 default_print_array_index
,
386 default_pass_by_reference
,
388 c_watch_location_expression
,
389 NULL
, /* la_get_symbol_name_matcher */
390 iterate_over_symbols
,
391 default_search_name_hash
,
399 build_fortran_types (struct gdbarch
*gdbarch
)
401 struct builtin_f_type
*builtin_f_type
402 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_f_type
);
404 builtin_f_type
->builtin_void
405 = arch_type (gdbarch
, TYPE_CODE_VOID
, TARGET_CHAR_BIT
, "VOID");
407 builtin_f_type
->builtin_character
408 = arch_type (gdbarch
, TYPE_CODE_CHAR
, TARGET_CHAR_BIT
, "character");
410 builtin_f_type
->builtin_logical_s1
411 = arch_boolean_type (gdbarch
, TARGET_CHAR_BIT
, 1, "logical*1");
413 builtin_f_type
->builtin_integer_s2
414 = arch_integer_type (gdbarch
, gdbarch_short_bit (gdbarch
), 0,
417 builtin_f_type
->builtin_integer_s8
418 = arch_integer_type (gdbarch
, gdbarch_long_long_bit (gdbarch
), 0,
421 builtin_f_type
->builtin_logical_s2
422 = arch_boolean_type (gdbarch
, gdbarch_short_bit (gdbarch
), 1,
425 builtin_f_type
->builtin_logical_s8
426 = arch_boolean_type (gdbarch
, gdbarch_long_long_bit (gdbarch
), 1,
429 builtin_f_type
->builtin_integer
430 = arch_integer_type (gdbarch
, gdbarch_int_bit (gdbarch
), 0,
433 builtin_f_type
->builtin_logical
434 = arch_boolean_type (gdbarch
, gdbarch_int_bit (gdbarch
), 1,
437 builtin_f_type
->builtin_real
438 = arch_float_type (gdbarch
, gdbarch_float_bit (gdbarch
),
439 "real", gdbarch_float_format (gdbarch
));
440 builtin_f_type
->builtin_real_s8
441 = arch_float_type (gdbarch
, gdbarch_double_bit (gdbarch
),
442 "real*8", gdbarch_double_format (gdbarch
));
443 builtin_f_type
->builtin_real_s16
444 = arch_float_type (gdbarch
, gdbarch_long_double_bit (gdbarch
),
445 "real*16", gdbarch_long_double_format (gdbarch
));
447 builtin_f_type
->builtin_complex_s8
448 = arch_complex_type (gdbarch
, "complex*8",
449 builtin_f_type
->builtin_real
);
450 builtin_f_type
->builtin_complex_s16
451 = arch_complex_type (gdbarch
, "complex*16",
452 builtin_f_type
->builtin_real_s8
);
453 builtin_f_type
->builtin_complex_s32
454 = arch_complex_type (gdbarch
, "complex*32",
455 builtin_f_type
->builtin_real_s16
);
457 return builtin_f_type
;
460 static struct gdbarch_data
*f_type_data
;
462 const struct builtin_f_type
*
463 builtin_f_type (struct gdbarch
*gdbarch
)
465 return (const struct builtin_f_type
*) gdbarch_data (gdbarch
, f_type_data
);
469 _initialize_f_language (void)
471 f_type_data
= gdbarch_data_register_post_init (build_fortran_types
);
477 fortran_argument_convert (struct value
*value
, bool is_artificial
)
481 /* If the value is not in the inferior e.g. registers values,
482 convenience variables and user input. */
483 if (VALUE_LVAL (value
) != lval_memory
)
485 struct type
*type
= value_type (value
);
486 const int length
= TYPE_LENGTH (type
);
488 = value_as_long (value_allocate_space_in_inferior (length
));
489 write_memory (addr
, value_contents (value
), length
);
491 = value_from_contents_and_address (type
, value_contents (value
),
493 return value_addr (val
);
496 return value_addr (value
); /* Program variables, e.g. arrays. */
504 fortran_preserve_arg_pointer (struct value
*arg
, struct type
*type
)
506 if (TYPE_CODE (value_type (arg
)) == TYPE_CODE_PTR
)
507 return value_type (arg
);