1 /* Modula 2 language support routines for GDB, the GNU debugger.
2 Copyright 1992 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 #include "expression.h"
24 #include "parser-defs.h"
29 static struct type
*m2_create_fundamental_type
PARAMS ((struct objfile
*, int));
30 static void m2_printstr
PARAMS ((GDB_FILE
*stream
, char *string
, unsigned int length
, int width
, int force_ellipses
));
31 static void m2_printchar
PARAMS ((int, GDB_FILE
*));
32 static void m2_emit_char
PARAMS ((int, GDB_FILE
*, int));
34 /* Print the character C on STREAM as part of the contents of a literal
35 string whose delimiter is QUOTER. Note that that format for printing
36 characters and strings is language specific.
37 FIXME: This is a copy of the same function from c-exp.y. It should
38 be replaced with a true Modula version.
42 m2_emit_char (c
, stream
, quoter
)
48 c
&= 0xFF; /* Avoid sign bit follies */
50 if (PRINT_LITERAL_FORM (c
))
52 if (c
== '\\' || c
== quoter
)
54 fputs_filtered ("\\", stream
);
56 fprintf_filtered (stream
, "%c", c
);
63 fputs_filtered ("\\n", stream
);
66 fputs_filtered ("\\b", stream
);
69 fputs_filtered ("\\t", stream
);
72 fputs_filtered ("\\f", stream
);
75 fputs_filtered ("\\r", stream
);
78 fputs_filtered ("\\e", stream
);
81 fputs_filtered ("\\a", stream
);
84 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
90 /* FIXME: This is a copy of the same function from c-exp.y. It should
91 be replaced with a true Modula version. */
94 m2_printchar (c
, stream
)
98 fputs_filtered ("'", stream
);
99 LA_EMIT_CHAR (c
, stream
, '\'');
100 fputs_filtered ("'", stream
);
103 /* Print the character string STRING, printing at most LENGTH characters.
104 Printing stops early if the number hits print_max; repeat counts
105 are printed as appropriate. Print ellipses at the end if we
106 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
107 FIXME: This is a copy of the same function from c-exp.y. It should
108 be replaced with a true Modula version. */
111 m2_printstr (stream
, string
, length
, width
, force_ellipses
)
118 register unsigned int i
;
119 unsigned int things_printed
= 0;
122 extern int inspect_it
;
123 extern int repeat_count_threshold
;
124 extern int print_max
;
128 fputs_filtered ("\"\"", gdb_stdout
);
132 for (i
= 0; i
< length
&& things_printed
< print_max
; ++i
)
134 /* Position of the character we are examining
135 to see whether it is repeated. */
137 /* Number of repetitions we have detected so far. */
144 fputs_filtered (", ", stream
);
150 while (rep1
< length
&& string
[rep1
] == string
[i
])
156 if (reps
> repeat_count_threshold
)
161 fputs_filtered ("\\\", ", stream
);
163 fputs_filtered ("\", ", stream
);
166 m2_printchar (string
[i
], stream
);
167 fprintf_filtered (stream
, " <repeats %u times>", reps
);
169 things_printed
+= repeat_count_threshold
;
177 fputs_filtered ("\\\"", stream
);
179 fputs_filtered ("\"", stream
);
182 LA_EMIT_CHAR (string
[i
], stream
, '"');
187 /* Terminate the quotes if necessary. */
191 fputs_filtered ("\\\"", stream
);
193 fputs_filtered ("\"", stream
);
196 if (force_ellipses
|| i
< length
)
197 fputs_filtered ("...", stream
);
200 /* FIXME: This is a copy of c_create_fundamental_type(), before
201 all the non-C types were stripped from it. Needs to be fixed
202 by an experienced Modula programmer. */
205 m2_create_fundamental_type (objfile
, typeid)
206 struct objfile
*objfile
;
209 register struct type
*type
= NULL
;
214 /* FIXME: For now, if we are asked to produce a type not in this
215 language, create the equivalent of a C integer type with the
216 name "<?type?>". When all the dust settles from the type
217 reconstruction work, this should probably become an error. */
218 type
= init_type (TYPE_CODE_INT
,
219 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
220 0, "<?type?>", objfile
);
221 warning ("internal error: no Modula fundamental type %d", typeid);
224 type
= init_type (TYPE_CODE_VOID
,
225 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
229 type
= init_type (TYPE_CODE_BOOL
,
230 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
231 TYPE_FLAG_UNSIGNED
, "boolean", objfile
);
234 type
= init_type (TYPE_CODE_STRING
,
235 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
236 0, "string", objfile
);
239 type
= init_type (TYPE_CODE_INT
,
240 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
244 type
= init_type (TYPE_CODE_INT
,
245 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
246 0, "signed char", objfile
);
248 case FT_UNSIGNED_CHAR
:
249 type
= init_type (TYPE_CODE_INT
,
250 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
251 TYPE_FLAG_UNSIGNED
, "unsigned char", objfile
);
254 type
= init_type (TYPE_CODE_INT
,
255 TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
256 0, "short", objfile
);
258 case FT_SIGNED_SHORT
:
259 type
= init_type (TYPE_CODE_INT
,
260 TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
261 0, "short", objfile
); /* FIXME-fnf */
263 case FT_UNSIGNED_SHORT
:
264 type
= init_type (TYPE_CODE_INT
,
265 TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
266 TYPE_FLAG_UNSIGNED
, "unsigned short", objfile
);
269 type
= init_type (TYPE_CODE_INT
,
270 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
273 case FT_SIGNED_INTEGER
:
274 type
= init_type (TYPE_CODE_INT
,
275 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
276 0, "int", objfile
); /* FIXME -fnf */
278 case FT_UNSIGNED_INTEGER
:
279 type
= init_type (TYPE_CODE_INT
,
280 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
281 TYPE_FLAG_UNSIGNED
, "unsigned int", objfile
);
283 case FT_FIXED_DECIMAL
:
284 type
= init_type (TYPE_CODE_INT
,
285 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
286 0, "fixed decimal", objfile
);
289 type
= init_type (TYPE_CODE_INT
,
290 TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
294 type
= init_type (TYPE_CODE_INT
,
295 TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
296 0, "long", objfile
); /* FIXME -fnf */
298 case FT_UNSIGNED_LONG
:
299 type
= init_type (TYPE_CODE_INT
,
300 TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
301 TYPE_FLAG_UNSIGNED
, "unsigned long", objfile
);
304 type
= init_type (TYPE_CODE_INT
,
305 TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
306 0, "long long", objfile
);
308 case FT_SIGNED_LONG_LONG
:
309 type
= init_type (TYPE_CODE_INT
,
310 TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
311 0, "signed long long", objfile
);
313 case FT_UNSIGNED_LONG_LONG
:
314 type
= init_type (TYPE_CODE_INT
,
315 TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
316 TYPE_FLAG_UNSIGNED
, "unsigned long long", objfile
);
319 type
= init_type (TYPE_CODE_FLT
,
320 TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
321 0, "float", objfile
);
323 case FT_DBL_PREC_FLOAT
:
324 type
= init_type (TYPE_CODE_FLT
,
325 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
326 0, "double", objfile
);
328 case FT_FLOAT_DECIMAL
:
329 type
= init_type (TYPE_CODE_FLT
,
330 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
331 0, "floating decimal", objfile
);
333 case FT_EXT_PREC_FLOAT
:
334 type
= init_type (TYPE_CODE_FLT
,
335 TARGET_LONG_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
336 0, "long double", objfile
);
339 type
= init_type (TYPE_CODE_COMPLEX
,
340 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
341 0, "complex", objfile
);
342 TYPE_TARGET_TYPE (type
)
343 = m2_create_fundamental_type (objfile
, FT_FLOAT
);
345 case FT_DBL_PREC_COMPLEX
:
346 type
= init_type (TYPE_CODE_COMPLEX
,
347 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
348 0, "double complex", objfile
);
349 TYPE_TARGET_TYPE (type
)
350 = m2_create_fundamental_type (objfile
, FT_DBL_PREC_FLOAT
);
352 case FT_EXT_PREC_COMPLEX
:
353 type
= init_type (TYPE_CODE_COMPLEX
,
354 2 * TARGET_LONG_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
355 0, "long double complex", objfile
);
356 TYPE_TARGET_TYPE (type
)
357 = m2_create_fundamental_type (objfile
, FT_EXT_PREC_FLOAT
);
364 /* Table of operators and their precedences for printing expressions. */
366 static const struct op_print m2_op_print_tab
[] = {
367 {"+", BINOP_ADD
, PREC_ADD
, 0},
368 {"+", UNOP_PLUS
, PREC_PREFIX
, 0},
369 {"-", BINOP_SUB
, PREC_ADD
, 0},
370 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
371 {"*", BINOP_MUL
, PREC_MUL
, 0},
372 {"/", BINOP_DIV
, PREC_MUL
, 0},
373 {"DIV", BINOP_INTDIV
, PREC_MUL
, 0},
374 {"MOD", BINOP_REM
, PREC_MUL
, 0},
375 {":=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
376 {"OR", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
377 {"AND", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
378 {"NOT", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
379 {"=", BINOP_EQUAL
, PREC_EQUAL
, 0},
380 {"<>", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
381 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
382 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
383 {">", BINOP_GTR
, PREC_ORDER
, 0},
384 {"<", BINOP_LESS
, PREC_ORDER
, 0},
385 {"^", UNOP_IND
, PREC_PREFIX
, 0},
386 {"@", BINOP_REPEAT
, PREC_REPEAT
, 0},
387 {"CAP", UNOP_CAP
, PREC_BUILTIN_FUNCTION
, 0},
388 {"CHR", UNOP_CHR
, PREC_BUILTIN_FUNCTION
, 0},
389 {"ORD", UNOP_ORD
, PREC_BUILTIN_FUNCTION
, 0},
390 {"FLOAT",UNOP_FLOAT
, PREC_BUILTIN_FUNCTION
, 0},
391 {"HIGH", UNOP_HIGH
, PREC_BUILTIN_FUNCTION
, 0},
392 {"MAX", UNOP_MAX
, PREC_BUILTIN_FUNCTION
, 0},
393 {"MIN", UNOP_MIN
, PREC_BUILTIN_FUNCTION
, 0},
394 {"ODD", UNOP_ODD
, PREC_BUILTIN_FUNCTION
, 0},
395 {"TRUNC", UNOP_TRUNC
, PREC_BUILTIN_FUNCTION
, 0},
399 /* The built-in types of Modula-2. */
401 struct type
*builtin_type_m2_char
;
402 struct type
*builtin_type_m2_int
;
403 struct type
*builtin_type_m2_card
;
404 struct type
*builtin_type_m2_real
;
405 struct type
*builtin_type_m2_bool
;
407 struct type
** CONST_PTR (m2_builtin_types
[]) =
409 &builtin_type_m2_char
,
410 &builtin_type_m2_int
,
411 &builtin_type_m2_card
,
412 &builtin_type_m2_real
,
413 &builtin_type_m2_bool
,
417 const struct language_defn m2_language_defn
= {
423 m2_parse
, /* parser */
424 m2_error
, /* parser error function */
425 evaluate_subexp_standard
,
426 m2_printchar
, /* Print character constant */
427 m2_printstr
, /* function to print string constant */
428 m2_emit_char
, /* Function to print a single character */
429 m2_create_fundamental_type
, /* Create fundamental type in this language */
430 m2_print_type
, /* Print a type using appropriate syntax */
431 m2_val_print
, /* Print a value using appropriate syntax */
432 c_value_print
, /* Print a top-level value */
433 {"", "", "", ""}, /* Binary format info */
434 {"%loB", "", "o", "B"}, /* Octal format info */
435 {"%ld", "", "d", ""}, /* Decimal format info */
436 {"0%lXH", "0", "X", "H"}, /* Hex format info */
437 m2_op_print_tab
, /* expression operators for printing */
438 0, /* arrays are first-class (not c-style) */
439 0, /* String lower bound */
440 &builtin_type_m2_char
, /* Type of string elements */
444 /* Initialization for Modula-2 */
447 _initialize_m2_language ()
449 /* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
450 builtin_type_m2_int
=
451 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
453 "INTEGER", (struct objfile
*) NULL
);
454 builtin_type_m2_card
=
455 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
457 "CARDINAL", (struct objfile
*) NULL
);
458 builtin_type_m2_real
=
459 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
461 "REAL", (struct objfile
*) NULL
);
462 builtin_type_m2_char
=
463 init_type (TYPE_CODE_CHAR
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
465 "CHAR", (struct objfile
*) NULL
);
466 builtin_type_m2_bool
=
467 init_type (TYPE_CODE_BOOL
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
469 "BOOLEAN", (struct objfile
*) NULL
);
471 add_language (&m2_language_defn
);