1 /* Fortran language support routines for GDB, the GNU debugger.
3 Copyright (C) 1993-2017 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"
33 #include "cp-support.h"
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);
44 /* Return the encoding that should be used for the character type
48 f_get_encoding (struct type *type)
52 switch (TYPE_LENGTH (type))
55 encoding = target_charset (get_type_arch (type));
58 if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
59 encoding = "UTF-32BE";
61 encoding = "UTF-32LE";
65 error (_("unrecognized character type"));
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. */
78 f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
80 const char *encoding = f_get_encoding (type);
82 generic_emit_char (c, type, stream, quoter, encoding);
85 /* Implementation of la_printchar. */
88 f_printchar (int c, struct type *type, struct ui_file *stream)
90 fputs_filtered ("'", stream);
91 LA_EMIT_CHAR (c, type, stream, '\'');
92 fputs_filtered ("'", stream);
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. */
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)
107 const char *type_encoding = f_get_encoding (type);
109 if (TYPE_LENGTH (type) == 4)
110 fputs_filtered ("4_", stream);
112 if (!encoding || !*encoding)
113 encoding = type_encoding;
115 generic_printstr (stream, type, string, length, encoding,
116 force_ellipses, '\'', 0, options);
120 /* Table of operators and their precedences for printing expressions. */
122 static const struct op_print f_op_print_tab[] =
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}
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,
165 f_language_arch_info (struct gdbarch *gdbarch,
166 struct language_arch_info *lai)
168 const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
170 lai->string_char_type = builtin->builtin_character;
171 lai->primitive_type_vector
172 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
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;
198 lai->bool_type_symbol = "logical";
199 lai->bool_type_default = builtin->builtin_logical_s2;
202 /* Remove the modules separator :: from the default break list. */
205 f_word_break_characters (void)
213 retval = xstrdup (default_word_break_characters ());
214 s = strchr (retval, ':');
217 char *last_char = &s[strlen (s) - 1];
226 /* Consider the modules separator :: as a valid symbol name character
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,
236 default_collect_symbol_completion_matches_break_on (tracker, mode,
238 text, word, ":", code);
241 static const char *f_extensions[] =
243 ".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP",
244 ".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08",
248 extern const struct language_defn f_language_defn =
258 &exp_descriptor_standard,
259 f_parse, /* parser */
260 f_yyerror, /* parser error function */
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 */
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 */
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,
293 c_watch_location_expression,
294 NULL, /* la_get_symbol_name_matcher */
295 iterate_over_symbols,
296 default_search_name_hash,
304 build_fortran_types (struct gdbarch *gdbarch)
306 struct builtin_f_type *builtin_f_type
307 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
309 builtin_f_type->builtin_void
310 = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "VOID");
312 builtin_f_type->builtin_character
313 = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
315 builtin_f_type->builtin_logical_s1
316 = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
318 builtin_f_type->builtin_integer_s2
319 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
322 builtin_f_type->builtin_logical_s2
323 = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
326 builtin_f_type->builtin_logical_s8
327 = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
330 builtin_f_type->builtin_integer
331 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
334 builtin_f_type->builtin_logical
335 = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
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));
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);
358 return builtin_f_type;
361 static struct gdbarch_data *f_type_data;
363 const struct builtin_f_type *
364 builtin_f_type (struct gdbarch *gdbarch)
366 return (const struct builtin_f_type *) gdbarch_data (gdbarch, f_type_data);
370 _initialize_f_language (void)
372 f_type_data = gdbarch_data_register_post_init (build_fortran_types);