* objfiles.c (allocate_objfile): Move comment to better place.
[deliverable/binutils-gdb.git] / gdb / f-lang.c
CommitLineData
c906108c 1/* Fortran language support routines for GDB, the GNU debugger.
ce27fb25 2
28e7fd62 3 Copyright (C) 1993-2013 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"
24#include "gdb_string.h"
25#include "symtab.h"
26#include "gdbtypes.h"
27#include "expression.h"
28#include "parser-defs.h"
29#include "language.h"
30#include "f-lang.h"
745b8ca0 31#include "valprint.h"
5f9a71c3 32#include "value.h"
f55ee35c 33#include "cp-support.h"
3b2b8fea 34#include "charset.h"
8e069a98 35#include "c-lang.h"
c906108c 36
c906108c 37
c906108c
SS
38/* Local functions */
39
a14ed312 40extern void _initialize_f_language (void);
c906108c 41
6c7a06a3
TT
42static void f_printchar (int c, struct type *type, struct ui_file * stream);
43static void f_emit_char (int c, struct type *type,
44 struct ui_file * stream, int quoter);
c906108c 45
3b2b8fea
TT
46/* Return the encoding that should be used for the character type
47 TYPE. */
48
49static const char *
50f_get_encoding (struct type *type)
51{
52 const char *encoding;
53
54 switch (TYPE_LENGTH (type))
55 {
56 case 1:
57 encoding = target_charset (get_type_arch (type));
58 break;
59 case 4:
60 if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
61 encoding = "UTF-32BE";
62 else
63 encoding = "UTF-32LE";
64 break;
65
66 default:
67 error (_("unrecognized character type"));
68 }
69
70 return encoding;
71}
72
c906108c
SS
73/* Print the character C on STREAM as part of the contents of a literal
74 string whose delimiter is QUOTER. Note that that format for printing
75 characters and strings is language specific.
76 FIXME: This is a copy of the same function from c-exp.y. It should
77 be replaced with a true F77 version. */
78
79static void
6c7a06a3 80f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
c906108c 81{
3b2b8fea 82 const char *encoding = f_get_encoding (type);
c5aa993b 83
3b2b8fea 84 generic_emit_char (c, type, stream, quoter, encoding);
c906108c
SS
85}
86
3b2b8fea 87/* Implementation of la_printchar. */
c906108c
SS
88
89static void
6c7a06a3 90f_printchar (int c, struct type *type, struct ui_file *stream)
c906108c
SS
91{
92 fputs_filtered ("'", stream);
6c7a06a3 93 LA_EMIT_CHAR (c, type, stream, '\'');
c906108c
SS
94 fputs_filtered ("'", stream);
95}
96
97/* Print the character string STRING, printing at most LENGTH characters.
98 Printing stops early if the number hits print_max; repeat counts
99 are printed as appropriate. Print ellipses at the end if we
100 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
101 FIXME: This is a copy of the same function from c-exp.y. It should
0963b4bd 102 be replaced with a true F77 version. */
c906108c
SS
103
104static void
6c7a06a3 105f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
be759fcf 106 unsigned int length, const char *encoding, int force_ellipses,
79a45b7d 107 const struct value_print_options *options)
c906108c 108{
3b2b8fea 109 const char *type_encoding = f_get_encoding (type);
c5aa993b 110
3b2b8fea
TT
111 if (TYPE_LENGTH (type) == 4)
112 fputs_filtered ("4_", stream);
c5aa993b 113
3b2b8fea
TT
114 if (!encoding || !*encoding)
115 encoding = type_encoding;
c5aa993b 116
3b2b8fea
TT
117 generic_printstr (stream, type, string, length, encoding,
118 force_ellipses, '\'', 0, options);
c906108c 119}
c906108c 120\f
c5aa993b 121
c906108c
SS
122/* Table of operators and their precedences for printing expressions. */
123
c5aa993b
JM
124static const struct op_print f_op_print_tab[] =
125{
126 {"+", BINOP_ADD, PREC_ADD, 0},
127 {"+", UNOP_PLUS, PREC_PREFIX, 0},
128 {"-", BINOP_SUB, PREC_ADD, 0},
129 {"-", UNOP_NEG, PREC_PREFIX, 0},
130 {"*", BINOP_MUL, PREC_MUL, 0},
131 {"/", BINOP_DIV, PREC_MUL, 0},
132 {"DIV", BINOP_INTDIV, PREC_MUL, 0},
133 {"MOD", BINOP_REM, PREC_MUL, 0},
134 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
135 {".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
136 {".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
137 {".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
138 {".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
139 {".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
140 {".LE.", BINOP_LEQ, PREC_ORDER, 0},
141 {".GE.", BINOP_GEQ, PREC_ORDER, 0},
142 {".GT.", BINOP_GTR, PREC_ORDER, 0},
143 {".LT.", BINOP_LESS, PREC_ORDER, 0},
144 {"**", UNOP_IND, PREC_PREFIX, 0},
145 {"@", BINOP_REPEAT, PREC_REPEAT, 0},
146 {NULL, 0, 0, 0}
c906108c
SS
147};
148\f
cad351d1
UW
149enum f_primitive_types {
150 f_primitive_type_character,
151 f_primitive_type_logical,
152 f_primitive_type_logical_s1,
153 f_primitive_type_logical_s2,
ce4b0682 154 f_primitive_type_logical_s8,
cad351d1
UW
155 f_primitive_type_integer,
156 f_primitive_type_integer_s2,
157 f_primitive_type_real,
158 f_primitive_type_real_s8,
159 f_primitive_type_real_s16,
160 f_primitive_type_complex_s8,
161 f_primitive_type_complex_s16,
162 f_primitive_type_void,
163 nr_f_primitive_types
c906108c
SS
164};
165
cad351d1
UW
166static void
167f_language_arch_info (struct gdbarch *gdbarch,
168 struct language_arch_info *lai)
169{
54ef06c7
UW
170 const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
171
172 lai->string_char_type = builtin->builtin_character;
cad351d1
UW
173 lai->primitive_type_vector
174 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
175 struct type *);
176
177 lai->primitive_type_vector [f_primitive_type_character]
54ef06c7 178 = builtin->builtin_character;
cad351d1 179 lai->primitive_type_vector [f_primitive_type_logical]
54ef06c7 180 = builtin->builtin_logical;
cad351d1 181 lai->primitive_type_vector [f_primitive_type_logical_s1]
54ef06c7 182 = builtin->builtin_logical_s1;
cad351d1 183 lai->primitive_type_vector [f_primitive_type_logical_s2]
54ef06c7 184 = builtin->builtin_logical_s2;
ce4b0682
SDJ
185 lai->primitive_type_vector [f_primitive_type_logical_s8]
186 = builtin->builtin_logical_s8;
cad351d1 187 lai->primitive_type_vector [f_primitive_type_real]
54ef06c7 188 = builtin->builtin_real;
cad351d1 189 lai->primitive_type_vector [f_primitive_type_real_s8]
54ef06c7 190 = builtin->builtin_real_s8;
cad351d1 191 lai->primitive_type_vector [f_primitive_type_real_s16]
54ef06c7 192 = builtin->builtin_real_s16;
cad351d1 193 lai->primitive_type_vector [f_primitive_type_complex_s8]
54ef06c7 194 = builtin->builtin_complex_s8;
cad351d1 195 lai->primitive_type_vector [f_primitive_type_complex_s16]
54ef06c7 196 = builtin->builtin_complex_s16;
cad351d1 197 lai->primitive_type_vector [f_primitive_type_void]
54ef06c7 198 = builtin->builtin_void;
fbb06eb1
UW
199
200 lai->bool_type_symbol = "logical";
201 lai->bool_type_default = builtin->builtin_logical_s2;
cad351d1
UW
202}
203
f55ee35c
JK
204/* Remove the modules separator :: from the default break list. */
205
206static char *
207f_word_break_characters (void)
208{
209 static char *retval;
210
211 if (!retval)
212 {
213 char *s;
214
215 retval = xstrdup (default_word_break_characters ());
216 s = strchr (retval, ':');
217 if (s)
218 {
219 char *last_char = &s[strlen (s) - 1];
220
221 *s = *last_char;
222 *last_char = 0;
223 }
224 }
225 return retval;
226}
227
3e43a32a
MS
228/* Consider the modules separator :: as a valid symbol name character
229 class. */
f55ee35c 230
49c4e619 231static VEC (char_ptr) *
6f937416
PA
232f_make_symbol_completion_list (const char *text, const char *word,
233 enum type_code code)
f55ee35c 234{
2f68a895 235 return default_make_symbol_completion_list_break_on (text, word, ":", code);
f55ee35c
JK
236}
237
c5aa993b
JM
238const struct language_defn f_language_defn =
239{
c906108c
SS
240 "fortran",
241 language_fortran,
c906108c 242 range_check_on,
63872f9d 243 case_sensitive_off,
7ca2d3a3 244 array_column_major,
9a044a89 245 macro_expansion_no,
5f9769d1 246 &exp_descriptor_standard,
c906108c
SS
247 f_parse, /* parser */
248 f_error, /* parser error function */
e85c3284 249 null_post_parser,
c906108c
SS
250 f_printchar, /* Print character constant */
251 f_printstr, /* function to print string constant */
252 f_emit_char, /* Function to print a single character */
c5aa993b 253 f_print_type, /* Print a type using appropriate syntax */
5c6ce71d 254 default_print_typedef, /* Print a typedef using appropriate syntax */
c906108c 255 f_val_print, /* Print a value using appropriate syntax */
c5aa993b 256 c_value_print, /* FIXME */
a5ee536b 257 default_read_var_value, /* la_read_var_value */
f636b87d 258 NULL, /* Language specific skip_trampoline */
2b2d9e11 259 NULL, /* name_of_this */
f55ee35c 260 cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
b368761e 261 basic_lookup_transparent_type,/* lookup_transparent_type */
9a3d7dfd 262 NULL, /* Language specific symbol demangler */
3e43a32a
MS
263 NULL, /* Language specific
264 class_name_from_physname */
c906108c
SS
265 f_op_print_tab, /* expression operators for printing */
266 0, /* arrays are first-class (not c-style) */
267 1, /* String lower bound */
f55ee35c
JK
268 f_word_break_characters,
269 f_make_symbol_completion_list,
cad351d1 270 f_language_arch_info,
e79af960 271 default_print_array_index,
41f1b697 272 default_pass_by_reference,
ae6a3a4c 273 default_get_string,
1a119f36 274 NULL, /* la_get_symbol_name_cmp */
f8eba3c6 275 iterate_over_symbols,
c906108c 276 LANG_MAGIC
c5aa993b 277};
c906108c 278
54ef06c7
UW
279static void *
280build_fortran_types (struct gdbarch *gdbarch)
c906108c 281{
54ef06c7
UW
282 struct builtin_f_type *builtin_f_type
283 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
284
e9bb382b
UW
285 builtin_f_type->builtin_void
286 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
287
288 builtin_f_type->builtin_character
289 = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
290
291 builtin_f_type->builtin_logical_s1
292 = arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
293
294 builtin_f_type->builtin_integer_s2
295 = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
296 "integer*2");
297
298 builtin_f_type->builtin_logical_s2
299 = arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
300 "logical*2");
301
ce4b0682
SDJ
302 builtin_f_type->builtin_logical_s8
303 = arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
304 "logical*8");
305
e9bb382b
UW
306 builtin_f_type->builtin_integer
307 = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
308 "integer");
309
310 builtin_f_type->builtin_logical
311 = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
312 "logical*4");
313
314 builtin_f_type->builtin_real
315 = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
316 "real", NULL);
317 builtin_f_type->builtin_real_s8
318 = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
319 "real*8", NULL);
320 builtin_f_type->builtin_real_s16
321 = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
322 "real*16", NULL);
323
324 builtin_f_type->builtin_complex_s8
325 = arch_complex_type (gdbarch, "complex*8",
326 builtin_f_type->builtin_real);
327 builtin_f_type->builtin_complex_s16
328 = arch_complex_type (gdbarch, "complex*16",
329 builtin_f_type->builtin_real_s8);
330 builtin_f_type->builtin_complex_s32
331 = arch_complex_type (gdbarch, "complex*32",
332 builtin_f_type->builtin_real_s16);
54ef06c7
UW
333
334 return builtin_f_type;
335}
336
337static struct gdbarch_data *f_type_data;
338
339const struct builtin_f_type *
340builtin_f_type (struct gdbarch *gdbarch)
341{
342 return gdbarch_data (gdbarch, f_type_data);
4e845cd3
MS
343}
344
345void
346_initialize_f_language (void)
347{
54ef06c7 348 f_type_data = gdbarch_data_register_post_init (build_fortran_types);
c906108c 349
c906108c
SS
350 add_language (&f_language_defn);
351}
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