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,
19 Boston, MA 02111-1307, USA. */
24 #include "expression.h"
25 #include "parser-defs.h"
30 extern void _initialize_m2_language
PARAMS ((void));
31 static struct type
*m2_create_fundamental_type
PARAMS ((struct objfile
*, int));
32 static void m2_printstr
PARAMS ((GDB_FILE
* stream
, char *string
, unsigned int length
, int width
, int force_ellipses
));
33 static void m2_printchar
PARAMS ((int, GDB_FILE
*));
34 static void m2_emit_char
PARAMS ((int, GDB_FILE
*, int));
36 /* Print the character C on STREAM as part of the contents of a literal
37 string whose delimiter is QUOTER. Note that that format for printing
38 characters and strings is language specific.
39 FIXME: This is a copy of the same function from c-exp.y. It should
40 be replaced with a true Modula version.
44 m2_emit_char (c
, stream
, quoter
)
50 c
&= 0xFF; /* Avoid sign bit follies */
52 if (PRINT_LITERAL_FORM (c
))
54 if (c
== '\\' || c
== quoter
)
56 fputs_filtered ("\\", stream
);
58 fprintf_filtered (stream
, "%c", c
);
65 fputs_filtered ("\\n", stream
);
68 fputs_filtered ("\\b", stream
);
71 fputs_filtered ("\\t", stream
);
74 fputs_filtered ("\\f", stream
);
77 fputs_filtered ("\\r", stream
);
80 fputs_filtered ("\\e", stream
);
83 fputs_filtered ("\\a", stream
);
86 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
92 /* FIXME: This is a copy of the same function from c-exp.y. It should
93 be replaced with a true Modula version. */
96 m2_printchar (c
, stream
)
100 fputs_filtered ("'", stream
);
101 LA_EMIT_CHAR (c
, stream
, '\'');
102 fputs_filtered ("'", stream
);
105 /* Print the character string STRING, printing at most LENGTH characters.
106 Printing stops early if the number hits print_max; repeat counts
107 are printed as appropriate. Print ellipses at the end if we
108 had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
109 FIXME: This is a copy of the same function from c-exp.y. It should
110 be replaced with a true Modula version. */
113 m2_printstr (stream
, string
, length
, width
, force_ellipses
)
120 register unsigned int i
;
121 unsigned int things_printed
= 0;
124 extern int inspect_it
;
125 extern int repeat_count_threshold
;
126 extern int print_max
;
130 fputs_filtered ("\"\"", gdb_stdout
);
134 for (i
= 0; i
< length
&& things_printed
< print_max
; ++i
)
136 /* Position of the character we are examining
137 to see whether it is repeated. */
139 /* Number of repetitions we have detected so far. */
146 fputs_filtered (", ", stream
);
152 while (rep1
< length
&& string
[rep1
] == string
[i
])
158 if (reps
> repeat_count_threshold
)
163 fputs_filtered ("\\\", ", stream
);
165 fputs_filtered ("\", ", stream
);
168 m2_printchar (string
[i
], stream
);
169 fprintf_filtered (stream
, " <repeats %u times>", reps
);
171 things_printed
+= repeat_count_threshold
;
179 fputs_filtered ("\\\"", stream
);
181 fputs_filtered ("\"", stream
);
184 LA_EMIT_CHAR (string
[i
], stream
, '"');
189 /* Terminate the quotes if necessary. */
193 fputs_filtered ("\\\"", stream
);
195 fputs_filtered ("\"", stream
);
198 if (force_ellipses
|| i
< length
)
199 fputs_filtered ("...", stream
);
202 /* FIXME: This is a copy of c_create_fundamental_type(), before
203 all the non-C types were stripped from it. Needs to be fixed
204 by an experienced Modula programmer. */
207 m2_create_fundamental_type (objfile
, typeid)
208 struct objfile
*objfile
;
211 register struct type
*type
= NULL
;
216 /* FIXME: For now, if we are asked to produce a type not in this
217 language, create the equivalent of a C integer type with the
218 name "<?type?>". When all the dust settles from the type
219 reconstruction work, this should probably become an error. */
220 type
= init_type (TYPE_CODE_INT
,
221 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
222 0, "<?type?>", objfile
);
223 warning ("internal error: no Modula fundamental type %d", typeid);
226 type
= init_type (TYPE_CODE_VOID
,
227 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
231 type
= init_type (TYPE_CODE_BOOL
,
232 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
233 TYPE_FLAG_UNSIGNED
, "boolean", objfile
);
236 type
= init_type (TYPE_CODE_STRING
,
237 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
238 0, "string", objfile
);
241 type
= init_type (TYPE_CODE_INT
,
242 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
246 type
= init_type (TYPE_CODE_INT
,
247 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
248 0, "signed char", objfile
);
250 case FT_UNSIGNED_CHAR
:
251 type
= init_type (TYPE_CODE_INT
,
252 TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
253 TYPE_FLAG_UNSIGNED
, "unsigned char", objfile
);
256 type
= init_type (TYPE_CODE_INT
,
257 TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
258 0, "short", objfile
);
260 case FT_SIGNED_SHORT
:
261 type
= init_type (TYPE_CODE_INT
,
262 TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
263 0, "short", objfile
); /* FIXME-fnf */
265 case FT_UNSIGNED_SHORT
:
266 type
= init_type (TYPE_CODE_INT
,
267 TARGET_SHORT_BIT
/ TARGET_CHAR_BIT
,
268 TYPE_FLAG_UNSIGNED
, "unsigned short", objfile
);
271 type
= init_type (TYPE_CODE_INT
,
272 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
275 case FT_SIGNED_INTEGER
:
276 type
= init_type (TYPE_CODE_INT
,
277 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
278 0, "int", objfile
); /* FIXME -fnf */
280 case FT_UNSIGNED_INTEGER
:
281 type
= init_type (TYPE_CODE_INT
,
282 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
283 TYPE_FLAG_UNSIGNED
, "unsigned int", objfile
);
285 case FT_FIXED_DECIMAL
:
286 type
= init_type (TYPE_CODE_INT
,
287 TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
288 0, "fixed decimal", objfile
);
291 type
= init_type (TYPE_CODE_INT
,
292 TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
296 type
= init_type (TYPE_CODE_INT
,
297 TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
298 0, "long", objfile
); /* FIXME -fnf */
300 case FT_UNSIGNED_LONG
:
301 type
= init_type (TYPE_CODE_INT
,
302 TARGET_LONG_BIT
/ TARGET_CHAR_BIT
,
303 TYPE_FLAG_UNSIGNED
, "unsigned long", objfile
);
306 type
= init_type (TYPE_CODE_INT
,
307 TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
308 0, "long long", objfile
);
310 case FT_SIGNED_LONG_LONG
:
311 type
= init_type (TYPE_CODE_INT
,
312 TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
313 0, "signed long long", objfile
);
315 case FT_UNSIGNED_LONG_LONG
:
316 type
= init_type (TYPE_CODE_INT
,
317 TARGET_LONG_LONG_BIT
/ TARGET_CHAR_BIT
,
318 TYPE_FLAG_UNSIGNED
, "unsigned long long", objfile
);
321 type
= init_type (TYPE_CODE_FLT
,
322 TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
323 0, "float", objfile
);
325 case FT_DBL_PREC_FLOAT
:
326 type
= init_type (TYPE_CODE_FLT
,
327 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
328 0, "double", objfile
);
330 case FT_FLOAT_DECIMAL
:
331 type
= init_type (TYPE_CODE_FLT
,
332 TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
333 0, "floating decimal", objfile
);
335 case FT_EXT_PREC_FLOAT
:
336 type
= init_type (TYPE_CODE_FLT
,
337 TARGET_LONG_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
338 0, "long double", objfile
);
341 type
= init_type (TYPE_CODE_COMPLEX
,
342 2 * TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
343 0, "complex", objfile
);
344 TYPE_TARGET_TYPE (type
)
345 = m2_create_fundamental_type (objfile
, FT_FLOAT
);
347 case FT_DBL_PREC_COMPLEX
:
348 type
= init_type (TYPE_CODE_COMPLEX
,
349 2 * TARGET_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
350 0, "double complex", objfile
);
351 TYPE_TARGET_TYPE (type
)
352 = m2_create_fundamental_type (objfile
, FT_DBL_PREC_FLOAT
);
354 case FT_EXT_PREC_COMPLEX
:
355 type
= init_type (TYPE_CODE_COMPLEX
,
356 2 * TARGET_LONG_DOUBLE_BIT
/ TARGET_CHAR_BIT
,
357 0, "long double complex", objfile
);
358 TYPE_TARGET_TYPE (type
)
359 = m2_create_fundamental_type (objfile
, FT_EXT_PREC_FLOAT
);
366 /* Table of operators and their precedences for printing expressions. */
368 static const struct op_print m2_op_print_tab
[] =
370 {"+", BINOP_ADD
, PREC_ADD
, 0},
371 {"+", UNOP_PLUS
, PREC_PREFIX
, 0},
372 {"-", BINOP_SUB
, PREC_ADD
, 0},
373 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
374 {"*", BINOP_MUL
, PREC_MUL
, 0},
375 {"/", BINOP_DIV
, PREC_MUL
, 0},
376 {"DIV", BINOP_INTDIV
, PREC_MUL
, 0},
377 {"MOD", BINOP_REM
, PREC_MUL
, 0},
378 {":=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
379 {"OR", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
380 {"AND", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
381 {"NOT", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
382 {"=", BINOP_EQUAL
, PREC_EQUAL
, 0},
383 {"<>", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
384 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
385 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
386 {">", BINOP_GTR
, PREC_ORDER
, 0},
387 {"<", BINOP_LESS
, PREC_ORDER
, 0},
388 {"^", UNOP_IND
, PREC_PREFIX
, 0},
389 {"@", BINOP_REPEAT
, PREC_REPEAT
, 0},
390 {"CAP", UNOP_CAP
, PREC_BUILTIN_FUNCTION
, 0},
391 {"CHR", UNOP_CHR
, PREC_BUILTIN_FUNCTION
, 0},
392 {"ORD", UNOP_ORD
, PREC_BUILTIN_FUNCTION
, 0},
393 {"FLOAT", UNOP_FLOAT
, PREC_BUILTIN_FUNCTION
, 0},
394 {"HIGH", UNOP_HIGH
, PREC_BUILTIN_FUNCTION
, 0},
395 {"MAX", UNOP_MAX
, PREC_BUILTIN_FUNCTION
, 0},
396 {"MIN", UNOP_MIN
, PREC_BUILTIN_FUNCTION
, 0},
397 {"ODD", UNOP_ODD
, PREC_BUILTIN_FUNCTION
, 0},
398 {"TRUNC", UNOP_TRUNC
, PREC_BUILTIN_FUNCTION
, 0},
402 /* The built-in types of Modula-2. */
404 struct type
*builtin_type_m2_char
;
405 struct type
*builtin_type_m2_int
;
406 struct type
*builtin_type_m2_card
;
407 struct type
*builtin_type_m2_real
;
408 struct type
*builtin_type_m2_bool
;
410 struct type
**CONST_PTR (m2_builtin_types
[]) =
412 &builtin_type_m2_char
,
413 &builtin_type_m2_int
,
414 &builtin_type_m2_card
,
415 &builtin_type_m2_real
,
416 &builtin_type_m2_bool
,
420 const struct language_defn m2_language_defn
=
427 m2_parse
, /* parser */
428 m2_error
, /* parser error function */
429 evaluate_subexp_standard
,
430 m2_printchar
, /* Print character constant */
431 m2_printstr
, /* function to print string constant */
432 m2_emit_char
, /* Function to print a single character */
433 m2_create_fundamental_type
, /* Create fundamental type in this language */
434 m2_print_type
, /* Print a type using appropriate syntax */
435 m2_val_print
, /* Print a value using appropriate syntax */
436 c_value_print
, /* Print a top-level value */
437 {"", "", "", ""}, /* Binary format info */
438 {"%loB", "", "o", "B"}, /* Octal format info */
439 {"%ld", "", "d", ""}, /* Decimal format info */
440 {"0%lXH", "0", "X", "H"}, /* Hex format info */
441 m2_op_print_tab
, /* expression operators for printing */
442 0, /* arrays are first-class (not c-style) */
443 0, /* String lower bound */
444 &builtin_type_m2_char
, /* Type of string elements */
448 /* Initialization for Modula-2 */
451 _initialize_m2_language ()
453 /* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
454 builtin_type_m2_int
=
455 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
457 "INTEGER", (struct objfile
*) NULL
);
458 builtin_type_m2_card
=
459 init_type (TYPE_CODE_INT
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
461 "CARDINAL", (struct objfile
*) NULL
);
462 builtin_type_m2_real
=
463 init_type (TYPE_CODE_FLT
, TARGET_FLOAT_BIT
/ TARGET_CHAR_BIT
,
465 "REAL", (struct objfile
*) NULL
);
466 builtin_type_m2_char
=
467 init_type (TYPE_CODE_CHAR
, TARGET_CHAR_BIT
/ TARGET_CHAR_BIT
,
469 "CHAR", (struct objfile
*) NULL
);
470 builtin_type_m2_bool
=
471 init_type (TYPE_CODE_BOOL
, TARGET_INT_BIT
/ TARGET_CHAR_BIT
,
473 "BOOLEAN", (struct objfile
*) NULL
);
475 add_language (&m2_language_defn
);